Merge tag 'for-4.20/block-20181021' of git://git.kernel.dk/linux-block

Pull block layer updates from Jens Axboe:
 "This is the main pull request for block changes for 4.20. This
  contains:

   - Series enabling runtime PM for blk-mq (Bart).

   - Two pull requests from Christoph for NVMe, with items such as;
      - Better AEN tracking
      - Multipath improvements
      - RDMA fixes
      - Rework of FC for target removal
      - Fixes for issues identified by static checkers
      - Fabric cleanups, as prep for TCP transport
      - Various cleanups and bug fixes

   - Block merging cleanups (Christoph)

   - Conversion of drivers to generic DMA mapping API (Christoph)

   - Series fixing ref count issues with blkcg (Dennis)

   - Series improving BFQ heuristics (Paolo, et al)

   - Series improving heuristics for the Kyber IO scheduler (Omar)

   - Removal of dangerous bio_rewind_iter() API (Ming)

   - Apply single queue IPI redirection logic to blk-mq (Ming)

   - Set of fixes and improvements for bcache (Coly et al)

   - Series closing a hotplug race with sysfs group attributes (Hannes)

   - Set of patches for lightnvm:
      - pblk trace support (Hans)
      - SPDX license header update (Javier)
      - Tons of refactoring patches to cleanly abstract the 1.2 and 2.0
        specs behind a common core interface. (Javier, Matias)
      - Enable pblk to use a common interface to retrieve chunk metadata
        (Matias)
      - Bug fixes (Various)

   - Set of fixes and updates to the blk IO latency target (Josef)

   - blk-mq queue number updates fixes (Jianchao)

   - Convert a bunch of drivers from the old legacy IO interface to
     blk-mq. This will conclude with the removal of the legacy IO
     interface itself in 4.21, with the rest of the drivers (me, Omar)

   - Removal of the DAC960 driver. The SCSI tree will introduce two
     replacement drivers for this (Hannes)"

* tag 'for-4.20/block-20181021' of git://git.kernel.dk/linux-block: (204 commits)
  block: setup bounce bio_sets properly
  blkcg: reassociate bios when make_request() is called recursively
  blkcg: fix edge case for blk_get_rl() under memory pressure
  nvme-fabrics: move controller options matching to fabrics
  nvme-rdma: always have a valid trsvcid
  mtip32xx: fully switch to the generic DMA API
  rsxx: switch to the generic DMA API
  umem: switch to the generic DMA API
  sx8: switch to the generic DMA API
  sx8: remove dead IF_64BIT_DMA_IS_POSSIBLE code
  skd: switch to the generic DMA API
  ubd: remove use of blk_rq_map_sg
  nvme-pci: remove duplicate check
  drivers/block: Remove DAC960 driver
  nvme-pci: fix hot removal during error handling
  nvmet-fcloop: suppress a compiler warning
  nvme-core: make implicit seed truncation explicit
  nvmet-fc: fix kernel-doc headers
  nvme-fc: rework the request initialization code
  nvme-fc: introduce struct nvme_fcp_op_w_sgl
  ...

110 files changed, 3328 insertions, 14383 deletions

diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
deleted file mode 100644
index 581312ac375f..000000000000
--- a/drivers/block/DAC960.c
+++ /dev/null
@@ -1,7229 +0,0 @@
-/*
-
-  Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers
-
-  Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com>
-  Portions Copyright 2002 by Mylex (An IBM Business Unit)
-
-  This program is free software; you may redistribute and/or modify it under
-  the terms of the GNU General Public License Version 2 as published by the
-  Free Software Foundation.
-
-  This program is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
-  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-  for complete details.
-
-*/
-
-
-#define DAC960_DriverVersion			"2.5.49"
-#define DAC960_DriverDate			"21 Aug 2007"
-
-
-#include <linux/compiler.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/miscdevice.h>
-#include <linux/blkdev.h>
-#include <linux/bio.h>
-#include <linux/completion.h>
-#include <linux/delay.h>
-#include <linux/genhd.h>
-#include <linux/hdreg.h>
-#include <linux/blkpg.h>
-#include <linux/dma-mapping.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/reboot.h>
-#include <linux/spinlock.h>
-#include <linux/timer.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/jiffies.h>
-#include <linux/random.h>
-#include <linux/scatterlist.h>
-#include <asm/io.h>
-#include <linux/uaccess.h>
-#include "DAC960.h"
-
-#define DAC960_GAM_MINOR	252
-
-
-static DEFINE_MUTEX(DAC960_mutex);
-static DAC960_Controller_T *DAC960_Controllers[DAC960_MaxControllers];
-static int DAC960_ControllerCount;
-static struct proc_dir_entry *DAC960_ProcDirectoryEntry;
-
-static long disk_size(DAC960_Controller_T *p, int drive_nr)
-{
-	if (p->FirmwareType == DAC960_V1_Controller) {
-		if (drive_nr >= p->LogicalDriveCount)
-			return 0;
-		return p->V1.LogicalDriveInformation[drive_nr].
-			LogicalDriveSize;
-	} else {
-		DAC960_V2_LogicalDeviceInfo_T *i =
-			p->V2.LogicalDeviceInformation[drive_nr];
-		if (i == NULL)
-			return 0;
-		return i->ConfigurableDeviceSize;
-	}
-}
-
-static int DAC960_open(struct block_device *bdev, fmode_t mode)
-{
-	struct gendisk *disk = bdev->bd_disk;
-	DAC960_Controller_T *p = disk->queue->queuedata;
-	int drive_nr = (long)disk->private_data;
-	int ret = -ENXIO;
-
-	mutex_lock(&DAC960_mutex);
-	if (p->FirmwareType == DAC960_V1_Controller) {
-		if (p->V1.LogicalDriveInformation[drive_nr].
-		    LogicalDriveState == DAC960_V1_LogicalDrive_Offline)
-			goto out;
-	} else {
-		DAC960_V2_LogicalDeviceInfo_T *i =
-			p->V2.LogicalDeviceInformation[drive_nr];
-		if (!i || i->LogicalDeviceState == DAC960_V2_LogicalDevice_Offline)
-			goto out;
-	}
-
-	check_disk_change(bdev);
-
-	if (!get_capacity(p->disks[drive_nr]))
-		goto out;
-	ret = 0;
-out:
-	mutex_unlock(&DAC960_mutex);
-	return ret;
-}
-
-static int DAC960_getgeo(struct block_device *bdev, struct hd_geometry *geo)
-{
-	struct gendisk *disk = bdev->bd_disk;
-	DAC960_Controller_T *p = disk->queue->queuedata;
-	int drive_nr = (long)disk->private_data;
-
-	if (p->FirmwareType == DAC960_V1_Controller) {
-		geo->heads = p->V1.GeometryTranslationHeads;
-		geo->sectors = p->V1.GeometryTranslationSectors;
-		geo->cylinders = p->V1.LogicalDriveInformation[drive_nr].
-			LogicalDriveSize / (geo->heads * geo->sectors);
-	} else {
-		DAC960_V2_LogicalDeviceInfo_T *i =
-			p->V2.LogicalDeviceInformation[drive_nr];
-		switch (i->DriveGeometry) {
-		case DAC960_V2_Geometry_128_32:
-			geo->heads = 128;
-			geo->sectors = 32;
-			break;
-		case DAC960_V2_Geometry_255_63:
-			geo->heads = 255;
-			geo->sectors = 63;
-			break;
-		default:
-			DAC960_Error("Illegal Logical Device Geometry %d\n",
-					p, i->DriveGeometry);
-			return -EINVAL;
-		}
-
-		geo->cylinders = i->ConfigurableDeviceSize /
-			(geo->heads * geo->sectors);
-	}
-	
-	return 0;
-}
-
-static unsigned int DAC960_check_events(struct gendisk *disk,
-					unsigned int clearing)
-{
-	DAC960_Controller_T *p = disk->queue->queuedata;
-	int drive_nr = (long)disk->private_data;
-
-	if (!p->LogicalDriveInitiallyAccessible[drive_nr])
-		return DISK_EVENT_MEDIA_CHANGE;
-	return 0;
-}
-
-static int DAC960_revalidate_disk(struct gendisk *disk)
-{
-	DAC960_Controller_T *p = disk->queue->queuedata;
-	int unit = (long)disk->private_data;
-
-	set_capacity(disk, disk_size(p, unit));
-	return 0;
-}
-
-static const struct block_device_operations DAC960_BlockDeviceOperations = {
-	.owner			= THIS_MODULE,
-	.open			= DAC960_open,
-	.getgeo			= DAC960_getgeo,
-	.check_events		= DAC960_check_events,
-	.revalidate_disk	= DAC960_revalidate_disk,
-};
-
-
-/*
-  DAC960_AnnounceDriver announces the Driver Version and Date, Author's Name,
-  Copyright Notice, and Electronic Mail Address.
-*/
-
-static void DAC960_AnnounceDriver(DAC960_Controller_T *Controller)
-{
-  DAC960_Announce("***** DAC960 RAID Driver Version "
-		  DAC960_DriverVersion " of "
-		  DAC960_DriverDate " *****\n", Controller);
-  DAC960_Announce("Copyright 1998-2001 by Leonard N. Zubkoff "
-		  "<lnz@dandelion.com>\n", Controller);
-}
-
-
-/*
-  DAC960_Failure prints a standardized error message, and then returns false.
-*/
-
-static bool DAC960_Failure(DAC960_Controller_T *Controller,
-			      unsigned char *ErrorMessage)
-{
-  DAC960_Error("While configuring DAC960 PCI RAID Controller at\n",
-	       Controller);
-  if (Controller->IO_Address == 0)
-    DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
-		 "PCI Address 0x%X\n", Controller,
-		 Controller->Bus, Controller->Device,
-		 Controller->Function, Controller->PCI_Address);
-  else DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
-		    "0x%X PCI Address 0x%X\n", Controller,
-		    Controller->Bus, Controller->Device,
-		    Controller->Function, Controller->IO_Address,
-		    Controller->PCI_Address);
-  DAC960_Error("%s FAILED - DETACHING\n", Controller, ErrorMessage);
-  return false;
-}
-
-/*
-  init_dma_loaf() and slice_dma_loaf() are helper functions for
-  aggregating the dma-mapped memory for a well-known collection of
-  data structures that are of different lengths.
-
-  These routines don't guarantee any alignment.  The caller must
-  include any space needed for alignment in the sizes of the structures
-  that are passed in.
- */
-
-static bool init_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf,
-								 size_t len)
-{
-	void *cpu_addr;
-	dma_addr_t dma_handle;
-
-	cpu_addr = pci_alloc_consistent(dev, len, &dma_handle);
-	if (cpu_addr == NULL)
-		return false;
-	
-	loaf->cpu_free = loaf->cpu_base = cpu_addr;
-	loaf->dma_free =loaf->dma_base = dma_handle;
-	loaf->length = len;
-	memset(cpu_addr, 0, len);
-	return true;
-}
-
-static void *slice_dma_loaf(struct dma_loaf *loaf, size_t len,
-					dma_addr_t *dma_handle)
-{
-	void *cpu_end = loaf->cpu_free + len;
-	void *cpu_addr = loaf->cpu_free;
-
-	BUG_ON(cpu_end > loaf->cpu_base + loaf->length);
-	*dma_handle = loaf->dma_free;
-	loaf->cpu_free = cpu_end;
-	loaf->dma_free += len;
-	return cpu_addr;
-}
-
-static void free_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf_handle)
-{
-	if (loaf_handle->cpu_base != NULL)
-		pci_free_consistent(dev, loaf_handle->length,
-			loaf_handle->cpu_base, loaf_handle->dma_base);
-}
-
-
-/*
-  DAC960_CreateAuxiliaryStructures allocates and initializes the auxiliary
-  data structures for Controller.  It returns true on success and false on
-  failure.
-*/
-
-static bool DAC960_CreateAuxiliaryStructures(DAC960_Controller_T *Controller)
-{
-  int CommandAllocationLength, CommandAllocationGroupSize;
-  int CommandsRemaining = 0, CommandIdentifier, CommandGroupByteCount;
-  void *AllocationPointer = NULL;
-  void *ScatterGatherCPU = NULL;
-  dma_addr_t ScatterGatherDMA;
-  struct dma_pool *ScatterGatherPool;
-  void *RequestSenseCPU = NULL;
-  dma_addr_t RequestSenseDMA;
-  struct dma_pool *RequestSensePool = NULL;
-
-  if (Controller->FirmwareType == DAC960_V1_Controller)
-    {
-      CommandAllocationLength = offsetof(DAC960_Command_T, V1.EndMarker);
-      CommandAllocationGroupSize = DAC960_V1_CommandAllocationGroupSize;
-      ScatterGatherPool = dma_pool_create("DAC960_V1_ScatterGather",
-		&Controller->PCIDevice->dev,
-	DAC960_V1_ScatterGatherLimit * sizeof(DAC960_V1_ScatterGatherSegment_T),
-	sizeof(DAC960_V1_ScatterGatherSegment_T), 0);
-      if (ScatterGatherPool == NULL)
-	    return DAC960_Failure(Controller,
-			"AUXILIARY STRUCTURE CREATION (SG)");
-      Controller->ScatterGatherPool = ScatterGatherPool;
-    }
-  else
-    {
-      CommandAllocationLength = offsetof(DAC960_Command_T, V2.EndMarker);
-      CommandAllocationGroupSize = DAC960_V2_CommandAllocationGroupSize;
-      ScatterGatherPool = dma_pool_create("DAC960_V2_ScatterGather",
-		&Controller->PCIDevice->dev,
-	DAC960_V2_ScatterGatherLimit * sizeof(DAC960_V2_ScatterGatherSegment_T),
-	sizeof(DAC960_V2_ScatterGatherSegment_T), 0);
-      if (ScatterGatherPool == NULL)
-	    return DAC960_Failure(Controller,
-			"AUXILIARY STRUCTURE CREATION (SG)");
-      RequestSensePool = dma_pool_create("DAC960_V2_RequestSense",
-		&Controller->PCIDevice->dev, sizeof(DAC960_SCSI_RequestSense_T),
-		sizeof(int), 0);
-      if (RequestSensePool == NULL) {
-	    dma_pool_destroy(ScatterGatherPool);
-	    return DAC960_Failure(Controller,
-			"AUXILIARY STRUCTURE CREATION (SG)");
-      }
-      Controller->ScatterGatherPool = ScatterGatherPool;
-      Controller->V2.RequestSensePool = RequestSensePool;
-    }
-  Controller->CommandAllocationGroupSize = CommandAllocationGroupSize;
-  Controller->FreeCommands = NULL;
-  for (CommandIdentifier = 1;
-       CommandIdentifier <= Controller->DriverQueueDepth;
-       CommandIdentifier++)
-    {
-      DAC960_Command_T *Command;
-      if (--CommandsRemaining <= 0)
-	{
-	  CommandsRemaining =
-		Controller->DriverQueueDepth - CommandIdentifier + 1;
-	  if (CommandsRemaining > CommandAllocationGroupSize)
-		CommandsRemaining = CommandAllocationGroupSize;
-	  CommandGroupByteCount =
-		CommandsRemaining * CommandAllocationLength;
-	  AllocationPointer = kzalloc(CommandGroupByteCount, GFP_ATOMIC);
-	  if (AllocationPointer == NULL)
-		return DAC960_Failure(Controller,
-					"AUXILIARY STRUCTURE CREATION");
-	 }
-      Command = (DAC960_Command_T *) AllocationPointer;
-      AllocationPointer += CommandAllocationLength;
-      Command->CommandIdentifier = CommandIdentifier;
-      Command->Controller = Controller;
-      Command->Next = Controller->FreeCommands;
-      Controller->FreeCommands = Command;
-      Controller->Commands[CommandIdentifier-1] = Command;
-      ScatterGatherCPU = dma_pool_alloc(ScatterGatherPool, GFP_ATOMIC,
-							&ScatterGatherDMA);
-      if (ScatterGatherCPU == NULL)
-	  return DAC960_Failure(Controller, "AUXILIARY STRUCTURE CREATION");
-
-      if (RequestSensePool != NULL) {
-	  RequestSenseCPU = dma_pool_alloc(RequestSensePool, GFP_ATOMIC,
-						&RequestSenseDMA);
-  	  if (RequestSenseCPU == NULL) {
-                dma_pool_free(ScatterGatherPool, ScatterGatherCPU,
-                                ScatterGatherDMA);
-    		return DAC960_Failure(Controller,
-					"AUXILIARY STRUCTURE CREATION");
-	  }
-        }
-     if (Controller->FirmwareType == DAC960_V1_Controller) {
-        Command->cmd_sglist = Command->V1.ScatterList;
-	Command->V1.ScatterGatherList =
-		(DAC960_V1_ScatterGatherSegment_T *)ScatterGatherCPU;
-	Command->V1.ScatterGatherListDMA = ScatterGatherDMA;
-	sg_init_table(Command->cmd_sglist, DAC960_V1_ScatterGatherLimit);
-      } else {
-        Command->cmd_sglist = Command->V2.ScatterList;
-	Command->V2.ScatterGatherList =
-		(DAC960_V2_ScatterGatherSegment_T *)ScatterGatherCPU;
-	Command->V2.ScatterGatherListDMA = ScatterGatherDMA;
-	Command->V2.RequestSense =
-				(DAC960_SCSI_RequestSense_T *)RequestSenseCPU;
-	Command->V2.RequestSenseDMA = RequestSenseDMA;
-	sg_init_table(Command->cmd_sglist, DAC960_V2_ScatterGatherLimit);
-      }
-    }
-  return true;
-}
-
-
-/*
-  DAC960_DestroyAuxiliaryStructures deallocates the auxiliary data
-  structures for Controller.
-*/
-
-static void DAC960_DestroyAuxiliaryStructures(DAC960_Controller_T *Controller)
-{
-  int i;
-  struct dma_pool *ScatterGatherPool = Controller->ScatterGatherPool;
-  struct dma_pool *RequestSensePool = NULL;
-  void *ScatterGatherCPU;
-  dma_addr_t ScatterGatherDMA;
-  void *RequestSenseCPU;
-  dma_addr_t RequestSenseDMA;
-  DAC960_Command_T *CommandGroup = NULL;
-  
-
-  if (Controller->FirmwareType == DAC960_V2_Controller)
-        RequestSensePool = Controller->V2.RequestSensePool;
-
-  Controller->FreeCommands = NULL;
-  for (i = 0; i < Controller->DriverQueueDepth; i++)
-    {
-      DAC960_Command_T *Command = Controller->Commands[i];
-
-      if (Command == NULL)
-	  continue;
-
-      if (Controller->FirmwareType == DAC960_V1_Controller) {
-	  ScatterGatherCPU = (void *)Command->V1.ScatterGatherList;
-	  ScatterGatherDMA = Command->V1.ScatterGatherListDMA;
-	  RequestSenseCPU = NULL;
-	  RequestSenseDMA = (dma_addr_t)0;
-      } else {
-          ScatterGatherCPU = (void *)Command->V2.ScatterGatherList;
-	  ScatterGatherDMA = Command->V2.ScatterGatherListDMA;
-	  RequestSenseCPU = (void *)Command->V2.RequestSense;
-	  RequestSenseDMA = Command->V2.RequestSenseDMA;
-      }
-      if (ScatterGatherCPU != NULL)
-          dma_pool_free(ScatterGatherPool, ScatterGatherCPU, ScatterGatherDMA);
-      if (RequestSenseCPU != NULL)
-          dma_pool_free(RequestSensePool, RequestSenseCPU, RequestSenseDMA);
-
-      if ((Command->CommandIdentifier
-	   % Controller->CommandAllocationGroupSize) == 1) {
-	   /*
-	    * We can't free the group of commands until all of the
-	    * request sense and scatter gather dma structures are free.
-            * Remember the beginning of the group, but don't free it
-	    * until we've reached the beginning of the next group.
-	    */
-	   kfree(CommandGroup);
-	   CommandGroup = Command;
-      }
-      Controller->Commands[i] = NULL;
-    }
-  kfree(CommandGroup);
-
-  if (Controller->CombinedStatusBuffer != NULL)
-    {
-      kfree(Controller->CombinedStatusBuffer);
-      Controller->CombinedStatusBuffer = NULL;
-      Controller->CurrentStatusBuffer = NULL;
-    }
-
-  dma_pool_destroy(ScatterGatherPool);
-  if (Controller->FirmwareType == DAC960_V1_Controller)
-  	return;
-
-  dma_pool_destroy(RequestSensePool);
-
-  for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
-	kfree(Controller->V2.LogicalDeviceInformation[i]);
-	Controller->V2.LogicalDeviceInformation[i] = NULL;
-  }
-
-  for (i = 0; i < DAC960_V2_MaxPhysicalDevices; i++)
-    {
-      kfree(Controller->V2.PhysicalDeviceInformation[i]);
-      Controller->V2.PhysicalDeviceInformation[i] = NULL;
-      kfree(Controller->V2.InquiryUnitSerialNumber[i]);
-      Controller->V2.InquiryUnitSerialNumber[i] = NULL;
-    }
-}
-
-
-/*
-  DAC960_V1_ClearCommand clears critical fields of Command for DAC960 V1
-  Firmware Controllers.
-*/
-
-static inline void DAC960_V1_ClearCommand(DAC960_Command_T *Command)
-{
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  memset(CommandMailbox, 0, sizeof(DAC960_V1_CommandMailbox_T));
-  Command->V1.CommandStatus = 0;
-}
-
-
-/*
-  DAC960_V2_ClearCommand clears critical fields of Command for DAC960 V2
-  Firmware Controllers.
-*/
-
-static inline void DAC960_V2_ClearCommand(DAC960_Command_T *Command)
-{
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
-  Command->V2.CommandStatus = 0;
-}
-
-
-/*
-  DAC960_AllocateCommand allocates a Command structure from Controller's
-  free list.  During driver initialization, a special initialization command
-  has been placed on the free list to guarantee that command allocation can
-  never fail.
-*/
-
-static inline DAC960_Command_T *DAC960_AllocateCommand(DAC960_Controller_T
-						       *Controller)
-{
-  DAC960_Command_T *Command = Controller->FreeCommands;
-  if (Command == NULL) return NULL;
-  Controller->FreeCommands = Command->Next;
-  Command->Next = NULL;
-  return Command;
-}
-
-
-/*
-  DAC960_DeallocateCommand deallocates Command, returning it to Controller's
-  free list.
-*/
-
-static inline void DAC960_DeallocateCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-
-  Command->Request = NULL;
-  Command->Next = Controller->FreeCommands;
-  Controller->FreeCommands = Command;
-}
-
-
-/*
-  DAC960_WaitForCommand waits for a wake_up on Controller's Command Wait Queue.
-*/
-
-static void DAC960_WaitForCommand(DAC960_Controller_T *Controller)
-{
-  spin_unlock_irq(&Controller->queue_lock);
-  __wait_event(Controller->CommandWaitQueue, Controller->FreeCommands);
-  spin_lock_irq(&Controller->queue_lock);
-}
-
-/*
-  DAC960_GEM_QueueCommand queues Command for DAC960 GEM Series Controllers.
-*/
-
-static void DAC960_GEM_QueueCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  DAC960_V2_CommandMailbox_T *NextCommandMailbox =
-      Controller->V2.NextCommandMailbox;
-
-  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
-  DAC960_GEM_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
-
-  if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
-      Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
-      DAC960_GEM_MemoryMailboxNewCommand(ControllerBaseAddress);
-
-  Controller->V2.PreviousCommandMailbox2 =
-      Controller->V2.PreviousCommandMailbox1;
-  Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
-
-  if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
-      NextCommandMailbox = Controller->V2.FirstCommandMailbox;
-
-  Controller->V2.NextCommandMailbox = NextCommandMailbox;
-}
-
-/*
-  DAC960_BA_QueueCommand queues Command for DAC960 BA Series Controllers.
-*/
-
-static void DAC960_BA_QueueCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  DAC960_V2_CommandMailbox_T *NextCommandMailbox =
-    Controller->V2.NextCommandMailbox;
-  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
-  DAC960_BA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
-  if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
-      Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
-    DAC960_BA_MemoryMailboxNewCommand(ControllerBaseAddress);
-  Controller->V2.PreviousCommandMailbox2 =
-    Controller->V2.PreviousCommandMailbox1;
-  Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
-  if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
-    NextCommandMailbox = Controller->V2.FirstCommandMailbox;
-  Controller->V2.NextCommandMailbox = NextCommandMailbox;
-}
-
-
-/*
-  DAC960_LP_QueueCommand queues Command for DAC960 LP Series Controllers.
-*/
-
-static void DAC960_LP_QueueCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  DAC960_V2_CommandMailbox_T *NextCommandMailbox =
-    Controller->V2.NextCommandMailbox;
-  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
-  DAC960_LP_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
-  if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
-      Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
-    DAC960_LP_MemoryMailboxNewCommand(ControllerBaseAddress);
-  Controller->V2.PreviousCommandMailbox2 =
-    Controller->V2.PreviousCommandMailbox1;
-  Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
-  if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
-    NextCommandMailbox = Controller->V2.FirstCommandMailbox;
-  Controller->V2.NextCommandMailbox = NextCommandMailbox;
-}
-
-
-/*
-  DAC960_LA_QueueCommandDualMode queues Command for DAC960 LA Series
-  Controllers with Dual Mode Firmware.
-*/
-
-static void DAC960_LA_QueueCommandDualMode(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
-    Controller->V1.NextCommandMailbox;
-  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
-  DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
-  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
-      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
-    DAC960_LA_MemoryMailboxNewCommand(ControllerBaseAddress);
-  Controller->V1.PreviousCommandMailbox2 =
-    Controller->V1.PreviousCommandMailbox1;
-  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
-  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
-    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
-  Controller->V1.NextCommandMailbox = NextCommandMailbox;
-}
-
-
-/*
-  DAC960_LA_QueueCommandSingleMode queues Command for DAC960 LA Series
-  Controllers with Single Mode Firmware.
-*/
-
-static void DAC960_LA_QueueCommandSingleMode(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
-    Controller->V1.NextCommandMailbox;
-  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
-  DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
-  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
-      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
-    DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
-  Controller->V1.PreviousCommandMailbox2 =
-    Controller->V1.PreviousCommandMailbox1;
-  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
-  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
-    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
-  Controller->V1.NextCommandMailbox = NextCommandMailbox;
-}
-
-
-/*
-  DAC960_PG_QueueCommandDualMode queues Command for DAC960 PG Series
-  Controllers with Dual Mode Firmware.
-*/
-
-static void DAC960_PG_QueueCommandDualMode(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
-    Controller->V1.NextCommandMailbox;
-  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
-  DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
-  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
-      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
-    DAC960_PG_MemoryMailboxNewCommand(ControllerBaseAddress);
-  Controller->V1.PreviousCommandMailbox2 =
-    Controller->V1.PreviousCommandMailbox1;
-  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
-  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
-    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
-  Controller->V1.NextCommandMailbox = NextCommandMailbox;
-}
-
-
-/*
-  DAC960_PG_QueueCommandSingleMode queues Command for DAC960 PG Series
-  Controllers with Single Mode Firmware.
-*/
-
-static void DAC960_PG_QueueCommandSingleMode(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
-    Controller->V1.NextCommandMailbox;
-  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
-  DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
-  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
-      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
-    DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
-  Controller->V1.PreviousCommandMailbox2 =
-    Controller->V1.PreviousCommandMailbox1;
-  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
-  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
-    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
-  Controller->V1.NextCommandMailbox = NextCommandMailbox;
-}
-
-
-/*
-  DAC960_PD_QueueCommand queues Command for DAC960 PD Series Controllers.
-*/
-
-static void DAC960_PD_QueueCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
-  while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
-    udelay(1);
-  DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
-  DAC960_PD_NewCommand(ControllerBaseAddress);
-}
-
-
-/*
-  DAC960_P_QueueCommand queues Command for DAC960 P Series Controllers.
-*/
-
-static void DAC960_P_QueueCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
-  switch (CommandMailbox->Common.CommandOpcode)
-    {
-    case DAC960_V1_Enquiry:
-      CommandMailbox->Common.CommandOpcode = DAC960_V1_Enquiry_Old;
-      break;
-    case DAC960_V1_GetDeviceState:
-      CommandMailbox->Common.CommandOpcode = DAC960_V1_GetDeviceState_Old;
-      break;
-    case DAC960_V1_Read:
-      CommandMailbox->Common.CommandOpcode = DAC960_V1_Read_Old;
-      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
-      break;
-    case DAC960_V1_Write:
-      CommandMailbox->Common.CommandOpcode = DAC960_V1_Write_Old;
-      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
-      break;
-    case DAC960_V1_ReadWithScatterGather:
-      CommandMailbox->Common.CommandOpcode =
-	DAC960_V1_ReadWithScatterGather_Old;
-      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
-      break;
-    case DAC960_V1_WriteWithScatterGather:
-      CommandMailbox->Common.CommandOpcode =
-	DAC960_V1_WriteWithScatterGather_Old;
-      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
-      break;
-    default:
-      break;
-    }
-  while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
-    udelay(1);
-  DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
-  DAC960_PD_NewCommand(ControllerBaseAddress);
-}
-
-
-/*
-  DAC960_ExecuteCommand executes Command and waits for completion.
-*/
-
-static void DAC960_ExecuteCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  DECLARE_COMPLETION_ONSTACK(Completion);
-  unsigned long flags;
-  Command->Completion = &Completion;
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  DAC960_QueueCommand(Command);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
- 
-  if (in_interrupt())
-	  return;
-  wait_for_completion(&Completion);
-}
-
-
-/*
-  DAC960_V1_ExecuteType3 executes a DAC960 V1 Firmware Controller Type 3
-  Command and waits for completion.  It returns true on success and false
-  on failure.
-*/
-
-static bool DAC960_V1_ExecuteType3(DAC960_Controller_T *Controller,
-				      DAC960_V1_CommandOpcode_T CommandOpcode,
-				      dma_addr_t DataDMA)
-{
-  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  DAC960_V1_CommandStatus_T CommandStatus;
-  DAC960_V1_ClearCommand(Command);
-  Command->CommandType = DAC960_ImmediateCommand;
-  CommandMailbox->Type3.CommandOpcode = CommandOpcode;
-  CommandMailbox->Type3.BusAddress = DataDMA;
-  DAC960_ExecuteCommand(Command);
-  CommandStatus = Command->V1.CommandStatus;
-  DAC960_DeallocateCommand(Command);
-  return (CommandStatus == DAC960_V1_NormalCompletion);
-}
-
-
-/*
-  DAC960_V1_ExecuteTypeB executes a DAC960 V1 Firmware Controller Type 3B
-  Command and waits for completion.  It returns true on success and false
-  on failure.
-*/
-
-static bool DAC960_V1_ExecuteType3B(DAC960_Controller_T *Controller,
-				       DAC960_V1_CommandOpcode_T CommandOpcode,
-				       unsigned char CommandOpcode2,
-				       dma_addr_t DataDMA)
-{
-  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  DAC960_V1_CommandStatus_T CommandStatus;
-  DAC960_V1_ClearCommand(Command);
-  Command->CommandType = DAC960_ImmediateCommand;
-  CommandMailbox->Type3B.CommandOpcode = CommandOpcode;
-  CommandMailbox->Type3B.CommandOpcode2 = CommandOpcode2;
-  CommandMailbox->Type3B.BusAddress = DataDMA;
-  DAC960_ExecuteCommand(Command);
-  CommandStatus = Command->V1.CommandStatus;
-  DAC960_DeallocateCommand(Command);
-  return (CommandStatus == DAC960_V1_NormalCompletion);
-}
-
-
-/*
-  DAC960_V1_ExecuteType3D executes a DAC960 V1 Firmware Controller Type 3D
-  Command and waits for completion.  It returns true on success and false
-  on failure.
-*/
-
-static bool DAC960_V1_ExecuteType3D(DAC960_Controller_T *Controller,
-				       DAC960_V1_CommandOpcode_T CommandOpcode,
-				       unsigned char Channel,
-				       unsigned char TargetID,
-				       dma_addr_t DataDMA)
-{
-  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  DAC960_V1_CommandStatus_T CommandStatus;
-  DAC960_V1_ClearCommand(Command);
-  Command->CommandType = DAC960_ImmediateCommand;
-  CommandMailbox->Type3D.CommandOpcode = CommandOpcode;
-  CommandMailbox->Type3D.Channel = Channel;
-  CommandMailbox->Type3D.TargetID = TargetID;
-  CommandMailbox->Type3D.BusAddress = DataDMA;
-  DAC960_ExecuteCommand(Command);
-  CommandStatus = Command->V1.CommandStatus;
-  DAC960_DeallocateCommand(Command);
-  return (CommandStatus == DAC960_V1_NormalCompletion);
-}
-
-
-/*
-  DAC960_V2_GeneralInfo executes a DAC960 V2 Firmware General Information
-  Reading IOCTL Command and waits for completion.  It returns true on success
-  and false on failure.
-
-  Return data in The controller's HealthStatusBuffer, which is dma-able memory
-*/
-
-static bool DAC960_V2_GeneralInfo(DAC960_Controller_T *Controller)
-{
-  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  DAC960_V2_CommandStatus_T CommandStatus;
-  DAC960_V2_ClearCommand(Command);
-  Command->CommandType = DAC960_ImmediateCommand;
-  CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
-  CommandMailbox->Common.CommandControlBits
-			.DataTransferControllerToHost = true;
-  CommandMailbox->Common.CommandControlBits
-			.NoAutoRequestSense = true;
-  CommandMailbox->Common.DataTransferSize = sizeof(DAC960_V2_HealthStatusBuffer_T);
-  CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_GetHealthStatus;
-  CommandMailbox->Common.DataTransferMemoryAddress
-			.ScatterGatherSegments[0]
-			.SegmentDataPointer =
-    Controller->V2.HealthStatusBufferDMA;
-  CommandMailbox->Common.DataTransferMemoryAddress
-			.ScatterGatherSegments[0]
-			.SegmentByteCount =
-    CommandMailbox->Common.DataTransferSize;
-  DAC960_ExecuteCommand(Command);
-  CommandStatus = Command->V2.CommandStatus;
-  DAC960_DeallocateCommand(Command);
-  return (CommandStatus == DAC960_V2_NormalCompletion);
-}
-
-
-/*
-  DAC960_V2_ControllerInfo executes a DAC960 V2 Firmware Controller
-  Information Reading IOCTL Command and waits for completion.  It returns
-  true on success and false on failure.
-
-  Data is returned in the controller's V2.NewControllerInformation dma-able
-  memory buffer.
-*/
-
-static bool DAC960_V2_NewControllerInfo(DAC960_Controller_T *Controller)
-{
-  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  DAC960_V2_CommandStatus_T CommandStatus;
-  DAC960_V2_ClearCommand(Command);
-  Command->CommandType = DAC960_ImmediateCommand;
-  CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
-  CommandMailbox->ControllerInfo.CommandControlBits
-				.DataTransferControllerToHost = true;
-  CommandMailbox->ControllerInfo.CommandControlBits
-				.NoAutoRequestSense = true;
-  CommandMailbox->ControllerInfo.DataTransferSize = sizeof(DAC960_V2_ControllerInfo_T);
-  CommandMailbox->ControllerInfo.ControllerNumber = 0;
-  CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
-  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
-				.ScatterGatherSegments[0]
-				.SegmentDataPointer =
-    	Controller->V2.NewControllerInformationDMA;
-  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
-				.ScatterGatherSegments[0]
-				.SegmentByteCount =
-    CommandMailbox->ControllerInfo.DataTransferSize;
-  DAC960_ExecuteCommand(Command);
-  CommandStatus = Command->V2.CommandStatus;
-  DAC960_DeallocateCommand(Command);
-  return (CommandStatus == DAC960_V2_NormalCompletion);
-}
-
-
-/*
-  DAC960_V2_LogicalDeviceInfo executes a DAC960 V2 Firmware Controller Logical
-  Device Information Reading IOCTL Command and waits for completion.  It
-  returns true on success and false on failure.
-
-  Data is returned in the controller's V2.NewLogicalDeviceInformation
-*/
-
-static bool DAC960_V2_NewLogicalDeviceInfo(DAC960_Controller_T *Controller,
-					   unsigned short LogicalDeviceNumber)
-{
-  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  DAC960_V2_CommandStatus_T CommandStatus;
-
-  DAC960_V2_ClearCommand(Command);
-  Command->CommandType = DAC960_ImmediateCommand;
-  CommandMailbox->LogicalDeviceInfo.CommandOpcode =
-				DAC960_V2_IOCTL;
-  CommandMailbox->LogicalDeviceInfo.CommandControlBits
-				   .DataTransferControllerToHost = true;
-  CommandMailbox->LogicalDeviceInfo.CommandControlBits
-				   .NoAutoRequestSense = true;
-  CommandMailbox->LogicalDeviceInfo.DataTransferSize = 
-				sizeof(DAC960_V2_LogicalDeviceInfo_T);
-  CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
-    LogicalDeviceNumber;
-  CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode = DAC960_V2_GetLogicalDeviceInfoValid;
-  CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
-				   .ScatterGatherSegments[0]
-				   .SegmentDataPointer =
-    	Controller->V2.NewLogicalDeviceInformationDMA;
-  CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
-				   .ScatterGatherSegments[0]
-				   .SegmentByteCount =
-    CommandMailbox->LogicalDeviceInfo.DataTransferSize;
-  DAC960_ExecuteCommand(Command);
-  CommandStatus = Command->V2.CommandStatus;
-  DAC960_DeallocateCommand(Command);
-  return (CommandStatus == DAC960_V2_NormalCompletion);
-}
-
-
-/*
-  DAC960_V2_PhysicalDeviceInfo executes a DAC960 V2 Firmware Controller "Read
-  Physical Device Information" IOCTL Command and waits for completion.  It
-  returns true on success and false on failure.
-
-  The Channel, TargetID, LogicalUnit arguments should be 0 the first time
-  this function is called for a given controller.  This will return data
-  for the "first" device on that controller.  The returned data includes a
-  Channel, TargetID, LogicalUnit that can be passed in to this routine to
-  get data for the NEXT device on that controller.
-
-  Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
-  memory buffer.
-
-*/
-
-static bool DAC960_V2_NewPhysicalDeviceInfo(DAC960_Controller_T *Controller,
-					    unsigned char Channel,
-					    unsigned char TargetID,
-					    unsigned char LogicalUnit)
-{
-  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  DAC960_V2_CommandStatus_T CommandStatus;
-
-  DAC960_V2_ClearCommand(Command);
-  Command->CommandType = DAC960_ImmediateCommand;
-  CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
-  CommandMailbox->PhysicalDeviceInfo.CommandControlBits
-				    .DataTransferControllerToHost = true;
-  CommandMailbox->PhysicalDeviceInfo.CommandControlBits
-				    .NoAutoRequestSense = true;
-  CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
-				sizeof(DAC960_V2_PhysicalDeviceInfo_T);
-  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit = LogicalUnit;
-  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
-  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
-  CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
-					DAC960_V2_GetPhysicalDeviceInfoValid;
-  CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
-				    .ScatterGatherSegments[0]
-				    .SegmentDataPointer =
-    					Controller->V2.NewPhysicalDeviceInformationDMA;
-  CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
-				    .ScatterGatherSegments[0]
-				    .SegmentByteCount =
-    CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
-  DAC960_ExecuteCommand(Command);
-  CommandStatus = Command->V2.CommandStatus;
-  DAC960_DeallocateCommand(Command);
-  return (CommandStatus == DAC960_V2_NormalCompletion);
-}
-
-
-static void DAC960_V2_ConstructNewUnitSerialNumber(
-	DAC960_Controller_T *Controller,
-	DAC960_V2_CommandMailbox_T *CommandMailbox, int Channel, int TargetID,
-	int LogicalUnit)
-{
-      CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10_Passthru;
-      CommandMailbox->SCSI_10.CommandControlBits
-			     .DataTransferControllerToHost = true;
-      CommandMailbox->SCSI_10.CommandControlBits
-			     .NoAutoRequestSense = true;
-      CommandMailbox->SCSI_10.DataTransferSize =
-	sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
-      CommandMailbox->SCSI_10.PhysicalDevice.LogicalUnit = LogicalUnit;
-      CommandMailbox->SCSI_10.PhysicalDevice.TargetID = TargetID;
-      CommandMailbox->SCSI_10.PhysicalDevice.Channel = Channel;
-      CommandMailbox->SCSI_10.CDBLength = 6;
-      CommandMailbox->SCSI_10.SCSI_CDB[0] = 0x12; /* INQUIRY */
-      CommandMailbox->SCSI_10.SCSI_CDB[1] = 1; /* EVPD = 1 */
-      CommandMailbox->SCSI_10.SCSI_CDB[2] = 0x80; /* Page Code */
-      CommandMailbox->SCSI_10.SCSI_CDB[3] = 0; /* Reserved */
-      CommandMailbox->SCSI_10.SCSI_CDB[4] =
-	sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
-      CommandMailbox->SCSI_10.SCSI_CDB[5] = 0; /* Control */
-      CommandMailbox->SCSI_10.DataTransferMemoryAddress
-			     .ScatterGatherSegments[0]
-			     .SegmentDataPointer =
-		Controller->V2.NewInquiryUnitSerialNumberDMA;
-      CommandMailbox->SCSI_10.DataTransferMemoryAddress
-			     .ScatterGatherSegments[0]
-			     .SegmentByteCount =
-		CommandMailbox->SCSI_10.DataTransferSize;
-}
-
-
-/*
-  DAC960_V2_NewUnitSerialNumber executes an SCSI pass-through
-  Inquiry command to a SCSI device identified by Channel number,
-  Target id, Logical Unit Number.  This function Waits for completion
-  of the command.
-
-  The return data includes Unit Serial Number information for the
-  specified device.
-
-  Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
-  memory buffer.
-*/
-
-static bool DAC960_V2_NewInquiryUnitSerialNumber(DAC960_Controller_T *Controller,
-			int Channel, int TargetID, int LogicalUnit)
-{
-      DAC960_Command_T *Command;
-      DAC960_V2_CommandMailbox_T *CommandMailbox;
-      DAC960_V2_CommandStatus_T CommandStatus;
-
-      Command = DAC960_AllocateCommand(Controller);
-      CommandMailbox = &Command->V2.CommandMailbox;
-      DAC960_V2_ClearCommand(Command);
-      Command->CommandType = DAC960_ImmediateCommand;
-
-      DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
-			Channel, TargetID, LogicalUnit);
-
-      DAC960_ExecuteCommand(Command);
-      CommandStatus = Command->V2.CommandStatus;
-      DAC960_DeallocateCommand(Command);
-      return (CommandStatus == DAC960_V2_NormalCompletion);
-}
-
-
-/*
-  DAC960_V2_DeviceOperation executes a DAC960 V2 Firmware Controller Device
-  Operation IOCTL Command and waits for completion.  It returns true on
-  success and false on failure.
-*/
-
-static bool DAC960_V2_DeviceOperation(DAC960_Controller_T *Controller,
-					 DAC960_V2_IOCTL_Opcode_T IOCTL_Opcode,
-					 DAC960_V2_OperationDevice_T
-					   OperationDevice)
-{
-  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  DAC960_V2_CommandStatus_T CommandStatus;
-  DAC960_V2_ClearCommand(Command);
-  Command->CommandType = DAC960_ImmediateCommand;
-  CommandMailbox->DeviceOperation.CommandOpcode = DAC960_V2_IOCTL;
-  CommandMailbox->DeviceOperation.CommandControlBits
-				 .DataTransferControllerToHost = true;
-  CommandMailbox->DeviceOperation.CommandControlBits
-    				 .NoAutoRequestSense = true;
-  CommandMailbox->DeviceOperation.IOCTL_Opcode = IOCTL_Opcode;
-  CommandMailbox->DeviceOperation.OperationDevice = OperationDevice;
-  DAC960_ExecuteCommand(Command);
-  CommandStatus = Command->V2.CommandStatus;
-  DAC960_DeallocateCommand(Command);
-  return (CommandStatus == DAC960_V2_NormalCompletion);
-}
-
-
-/*
-  DAC960_V1_EnableMemoryMailboxInterface enables the Memory Mailbox Interface
-  for DAC960 V1 Firmware Controllers.
-
-  PD and P controller types have no memory mailbox, but still need the
-  other dma mapped memory.
-*/
-
-static bool DAC960_V1_EnableMemoryMailboxInterface(DAC960_Controller_T
-						      *Controller)
-{
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_HardwareType_T hw_type = Controller->HardwareType;
-  struct pci_dev *PCI_Device = Controller->PCIDevice;
-  struct dma_loaf *DmaPages = &Controller->DmaPages;
-  size_t DmaPagesSize;
-  size_t CommandMailboxesSize;
-  size_t StatusMailboxesSize;
-
-  DAC960_V1_CommandMailbox_T *CommandMailboxesMemory;
-  dma_addr_t CommandMailboxesMemoryDMA;
-
-  DAC960_V1_StatusMailbox_T *StatusMailboxesMemory;
-  dma_addr_t StatusMailboxesMemoryDMA;
-
-  DAC960_V1_CommandMailbox_T CommandMailbox;
-  DAC960_V1_CommandStatus_T CommandStatus;
-  int TimeoutCounter;
-  int i;
-
-  memset(&CommandMailbox, 0, sizeof(DAC960_V1_CommandMailbox_T));
-
-  if (pci_set_dma_mask(Controller->PCIDevice, DMA_BIT_MASK(32)))
-	return DAC960_Failure(Controller, "DMA mask out of range");
-
-  if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller)) {
-    CommandMailboxesSize =  0;
-    StatusMailboxesSize = 0;
-  } else {
-    CommandMailboxesSize =  DAC960_V1_CommandMailboxCount * sizeof(DAC960_V1_CommandMailbox_T);
-    StatusMailboxesSize = DAC960_V1_StatusMailboxCount * sizeof(DAC960_V1_StatusMailbox_T);
-  }
-  DmaPagesSize = CommandMailboxesSize + StatusMailboxesSize + 
-	sizeof(DAC960_V1_DCDB_T) + sizeof(DAC960_V1_Enquiry_T) +
-	sizeof(DAC960_V1_ErrorTable_T) + sizeof(DAC960_V1_EventLogEntry_T) +
-	sizeof(DAC960_V1_RebuildProgress_T) +
-	sizeof(DAC960_V1_LogicalDriveInformationArray_T) +
-	sizeof(DAC960_V1_BackgroundInitializationStatus_T) +
-	sizeof(DAC960_V1_DeviceState_T) + sizeof(DAC960_SCSI_Inquiry_T) +
-	sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
-
-  if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize))
-	return false;
-
-
-  if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller)) 
-	goto skip_mailboxes;
-
-  CommandMailboxesMemory = slice_dma_loaf(DmaPages,
-                CommandMailboxesSize, &CommandMailboxesMemoryDMA);
-  
-  /* These are the base addresses for the command memory mailbox array */
-  Controller->V1.FirstCommandMailbox = CommandMailboxesMemory;
-  Controller->V1.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
-
-  CommandMailboxesMemory += DAC960_V1_CommandMailboxCount - 1;
-  Controller->V1.LastCommandMailbox = CommandMailboxesMemory;
-  Controller->V1.NextCommandMailbox = Controller->V1.FirstCommandMailbox;
-  Controller->V1.PreviousCommandMailbox1 = Controller->V1.LastCommandMailbox;
-  Controller->V1.PreviousCommandMailbox2 =
-	  				Controller->V1.LastCommandMailbox - 1;
-
-  /* These are the base addresses for the status memory mailbox array */
-  StatusMailboxesMemory = slice_dma_loaf(DmaPages,
-                StatusMailboxesSize, &StatusMailboxesMemoryDMA);
-
-  Controller->V1.FirstStatusMailbox = StatusMailboxesMemory;
-  Controller->V1.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
-  StatusMailboxesMemory += DAC960_V1_StatusMailboxCount - 1;
-  Controller->V1.LastStatusMailbox = StatusMailboxesMemory;
-  Controller->V1.NextStatusMailbox = Controller->V1.FirstStatusMailbox;
-
-skip_mailboxes:
-  Controller->V1.MonitoringDCDB = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V1_DCDB_T),
-                &Controller->V1.MonitoringDCDB_DMA);
-
-  Controller->V1.NewEnquiry = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V1_Enquiry_T),
-                &Controller->V1.NewEnquiryDMA);
-
-  Controller->V1.NewErrorTable = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V1_ErrorTable_T),
-                &Controller->V1.NewErrorTableDMA);
-
-  Controller->V1.EventLogEntry = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V1_EventLogEntry_T),
-                &Controller->V1.EventLogEntryDMA);
-
-  Controller->V1.RebuildProgress = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V1_RebuildProgress_T),
-                &Controller->V1.RebuildProgressDMA);
-
-  Controller->V1.NewLogicalDriveInformation = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V1_LogicalDriveInformationArray_T),
-                &Controller->V1.NewLogicalDriveInformationDMA);
-
-  Controller->V1.BackgroundInitializationStatus = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V1_BackgroundInitializationStatus_T),
-                &Controller->V1.BackgroundInitializationStatusDMA);
-
-  Controller->V1.NewDeviceState = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V1_DeviceState_T),
-                &Controller->V1.NewDeviceStateDMA);
-
-  Controller->V1.NewInquiryStandardData = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_SCSI_Inquiry_T),
-                &Controller->V1.NewInquiryStandardDataDMA);
-
-  Controller->V1.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
-                &Controller->V1.NewInquiryUnitSerialNumberDMA);
-
-  if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller))
-	return true;
- 
-  /* Enable the Memory Mailbox Interface. */
-  Controller->V1.DualModeMemoryMailboxInterface = true;
-  CommandMailbox.TypeX.CommandOpcode = 0x2B;
-  CommandMailbox.TypeX.CommandIdentifier = 0;
-  CommandMailbox.TypeX.CommandOpcode2 = 0x14;
-  CommandMailbox.TypeX.CommandMailboxesBusAddress =
-    				Controller->V1.FirstCommandMailboxDMA;
-  CommandMailbox.TypeX.StatusMailboxesBusAddress =
-    				Controller->V1.FirstStatusMailboxDMA;
-#define TIMEOUT_COUNT 1000000
-
-  for (i = 0; i < 2; i++)
-    switch (Controller->HardwareType)
-      {
-      case DAC960_LA_Controller:
-	TimeoutCounter = TIMEOUT_COUNT;
-	while (--TimeoutCounter >= 0)
-	  {
-	    if (!DAC960_LA_HardwareMailboxFullP(ControllerBaseAddress))
-	      break;
-	    udelay(10);
-	  }
-	if (TimeoutCounter < 0) return false;
-	DAC960_LA_WriteHardwareMailbox(ControllerBaseAddress, &CommandMailbox);
-	DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
-	TimeoutCounter = TIMEOUT_COUNT;
-	while (--TimeoutCounter >= 0)
-	  {
-	    if (DAC960_LA_HardwareMailboxStatusAvailableP(
-		  ControllerBaseAddress))
-	      break;
-	    udelay(10);
-	  }
-	if (TimeoutCounter < 0) return false;
-	CommandStatus = DAC960_LA_ReadStatusRegister(ControllerBaseAddress);
-	DAC960_LA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
-	DAC960_LA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
-	if (CommandStatus == DAC960_V1_NormalCompletion) return true;
-	Controller->V1.DualModeMemoryMailboxInterface = false;
-	CommandMailbox.TypeX.CommandOpcode2 = 0x10;
-	break;
-      case DAC960_PG_Controller:
-	TimeoutCounter = TIMEOUT_COUNT;
-	while (--TimeoutCounter >= 0)
-	  {
-	    if (!DAC960_PG_HardwareMailboxFullP(ControllerBaseAddress))
-	      break;
-	    udelay(10);
-	  }
-	if (TimeoutCounter < 0) return false;
-	DAC960_PG_WriteHardwareMailbox(ControllerBaseAddress, &CommandMailbox);
-	DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
-
-	TimeoutCounter = TIMEOUT_COUNT;
-	while (--TimeoutCounter >= 0)
-	  {
-	    if (DAC960_PG_HardwareMailboxStatusAvailableP(
-		  ControllerBaseAddress))
-	      break;
-	    udelay(10);
-	  }
-	if (TimeoutCounter < 0) return false;
-	CommandStatus = DAC960_PG_ReadStatusRegister(ControllerBaseAddress);
-	DAC960_PG_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
-	DAC960_PG_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
-	if (CommandStatus == DAC960_V1_NormalCompletion) return true;
-	Controller->V1.DualModeMemoryMailboxInterface = false;
-	CommandMailbox.TypeX.CommandOpcode2 = 0x10;
-	break;
-      default:
-        DAC960_Failure(Controller, "Unknown Controller Type\n");
-	break;
-      }
-  return false;
-}
-
-
-/*
-  DAC960_V2_EnableMemoryMailboxInterface enables the Memory Mailbox Interface
-  for DAC960 V2 Firmware Controllers.
-
-  Aggregate the space needed for the controller's memory mailbox and
-  the other data structures that will be targets of dma transfers with
-  the controller.  Allocate a dma-mapped region of memory to hold these
-  structures.  Then, save CPU pointers and dma_addr_t values to reference
-  the structures that are contained in that region.
-*/
-
-static bool DAC960_V2_EnableMemoryMailboxInterface(DAC960_Controller_T
-						      *Controller)
-{
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  struct pci_dev *PCI_Device = Controller->PCIDevice;
-  struct dma_loaf *DmaPages = &Controller->DmaPages;
-  size_t DmaPagesSize;
-  size_t CommandMailboxesSize;
-  size_t StatusMailboxesSize;
-
-  DAC960_V2_CommandMailbox_T *CommandMailboxesMemory;
-  dma_addr_t CommandMailboxesMemoryDMA;
-
-  DAC960_V2_StatusMailbox_T *StatusMailboxesMemory;
-  dma_addr_t StatusMailboxesMemoryDMA;
-
-  DAC960_V2_CommandMailbox_T *CommandMailbox;
-  dma_addr_t	CommandMailboxDMA;
-  DAC960_V2_CommandStatus_T CommandStatus;
-
-	if (pci_set_dma_mask(Controller->PCIDevice, DMA_BIT_MASK(64)) &&
-	    pci_set_dma_mask(Controller->PCIDevice, DMA_BIT_MASK(32)))
-		return DAC960_Failure(Controller, "DMA mask out of range");
-
-  /* This is a temporary dma mapping, used only in the scope of this function */
-  CommandMailbox = pci_alloc_consistent(PCI_Device,
-		sizeof(DAC960_V2_CommandMailbox_T), &CommandMailboxDMA);
-  if (CommandMailbox == NULL)
-	  return false;
-
-  CommandMailboxesSize = DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T);
-  StatusMailboxesSize = DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T);
-  DmaPagesSize =
-    CommandMailboxesSize + StatusMailboxesSize +
-    sizeof(DAC960_V2_HealthStatusBuffer_T) +
-    sizeof(DAC960_V2_ControllerInfo_T) +
-    sizeof(DAC960_V2_LogicalDeviceInfo_T) +
-    sizeof(DAC960_V2_PhysicalDeviceInfo_T) +
-    sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T) +
-    sizeof(DAC960_V2_Event_T) +
-    sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
-
-  if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize)) {
-  	pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
-					CommandMailbox, CommandMailboxDMA);
-	return false;
-  }
-
-  CommandMailboxesMemory = slice_dma_loaf(DmaPages,
-		CommandMailboxesSize, &CommandMailboxesMemoryDMA);
-
-  /* These are the base addresses for the command memory mailbox array */
-  Controller->V2.FirstCommandMailbox = CommandMailboxesMemory;
-  Controller->V2.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
-
-  CommandMailboxesMemory += DAC960_V2_CommandMailboxCount - 1;
-  Controller->V2.LastCommandMailbox = CommandMailboxesMemory;
-  Controller->V2.NextCommandMailbox = Controller->V2.FirstCommandMailbox;
-  Controller->V2.PreviousCommandMailbox1 = Controller->V2.LastCommandMailbox;
-  Controller->V2.PreviousCommandMailbox2 =
-    					Controller->V2.LastCommandMailbox - 1;
-
-  /* These are the base addresses for the status memory mailbox array */
-  StatusMailboxesMemory = slice_dma_loaf(DmaPages,
-		StatusMailboxesSize, &StatusMailboxesMemoryDMA);
-
-  Controller->V2.FirstStatusMailbox = StatusMailboxesMemory;
-  Controller->V2.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
-  StatusMailboxesMemory += DAC960_V2_StatusMailboxCount - 1;
-  Controller->V2.LastStatusMailbox = StatusMailboxesMemory;
-  Controller->V2.NextStatusMailbox = Controller->V2.FirstStatusMailbox;
-
-  Controller->V2.HealthStatusBuffer = slice_dma_loaf(DmaPages,
-		sizeof(DAC960_V2_HealthStatusBuffer_T),
-		&Controller->V2.HealthStatusBufferDMA);
-
-  Controller->V2.NewControllerInformation = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V2_ControllerInfo_T), 
-                &Controller->V2.NewControllerInformationDMA);
-
-  Controller->V2.NewLogicalDeviceInformation =  slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V2_LogicalDeviceInfo_T),
-                &Controller->V2.NewLogicalDeviceInformationDMA);
-
-  Controller->V2.NewPhysicalDeviceInformation = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V2_PhysicalDeviceInfo_T),
-                &Controller->V2.NewPhysicalDeviceInformationDMA);
-
-  Controller->V2.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
-                &Controller->V2.NewInquiryUnitSerialNumberDMA);
-
-  Controller->V2.Event = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V2_Event_T),
-                &Controller->V2.EventDMA);
-
-  Controller->V2.PhysicalToLogicalDevice = slice_dma_loaf(DmaPages,
-                sizeof(DAC960_V2_PhysicalToLogicalDevice_T),
-                &Controller->V2.PhysicalToLogicalDeviceDMA);
-
-  /*
-    Enable the Memory Mailbox Interface.
-    
-    I don't know why we can't just use one of the memory mailboxes
-    we just allocated to do this, instead of using this temporary one.
-    Try this change later.
-  */
-  memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
-  CommandMailbox->SetMemoryMailbox.CommandIdentifier = 1;
-  CommandMailbox->SetMemoryMailbox.CommandOpcode = DAC960_V2_IOCTL;
-  CommandMailbox->SetMemoryMailbox.CommandControlBits.NoAutoRequestSense = true;
-  CommandMailbox->SetMemoryMailbox.FirstCommandMailboxSizeKB =
-    (DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T)) >> 10;
-  CommandMailbox->SetMemoryMailbox.FirstStatusMailboxSizeKB =
-    (DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T)) >> 10;
-  CommandMailbox->SetMemoryMailbox.SecondCommandMailboxSizeKB = 0;
-  CommandMailbox->SetMemoryMailbox.SecondStatusMailboxSizeKB = 0;
-  CommandMailbox->SetMemoryMailbox.RequestSenseSize = 0;
-  CommandMailbox->SetMemoryMailbox.IOCTL_Opcode = DAC960_V2_SetMemoryMailbox;
-  CommandMailbox->SetMemoryMailbox.HealthStatusBufferSizeKB = 1;
-  CommandMailbox->SetMemoryMailbox.HealthStatusBufferBusAddress =
-    					Controller->V2.HealthStatusBufferDMA;
-  CommandMailbox->SetMemoryMailbox.FirstCommandMailboxBusAddress =
-    					Controller->V2.FirstCommandMailboxDMA;
-  CommandMailbox->SetMemoryMailbox.FirstStatusMailboxBusAddress =
-    					Controller->V2.FirstStatusMailboxDMA;
-  switch (Controller->HardwareType)
-    {
-    case DAC960_GEM_Controller:
-      while (DAC960_GEM_HardwareMailboxFullP(ControllerBaseAddress))
-	udelay(1);
-      DAC960_GEM_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
-      DAC960_GEM_HardwareMailboxNewCommand(ControllerBaseAddress);
-      while (!DAC960_GEM_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
-	udelay(1);
-      CommandStatus = DAC960_GEM_ReadCommandStatus(ControllerBaseAddress);
-      DAC960_GEM_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
-      DAC960_GEM_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
-      break;
-    case DAC960_BA_Controller:
-      while (DAC960_BA_HardwareMailboxFullP(ControllerBaseAddress))
-	udelay(1);
-      DAC960_BA_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
-      DAC960_BA_HardwareMailboxNewCommand(ControllerBaseAddress);
-      while (!DAC960_BA_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
-	udelay(1);
-      CommandStatus = DAC960_BA_ReadCommandStatus(ControllerBaseAddress);
-      DAC960_BA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
-      DAC960_BA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
-      break;
-    case DAC960_LP_Controller:
-      while (DAC960_LP_HardwareMailboxFullP(ControllerBaseAddress))
-	udelay(1);
-      DAC960_LP_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
-      DAC960_LP_HardwareMailboxNewCommand(ControllerBaseAddress);
-      while (!DAC960_LP_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
-	udelay(1);
-      CommandStatus = DAC960_LP_ReadCommandStatus(ControllerBaseAddress);
-      DAC960_LP_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
-      DAC960_LP_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
-      break;
-    default:
-      DAC960_Failure(Controller, "Unknown Controller Type\n");
-      CommandStatus = DAC960_V2_AbormalCompletion;
-      break;
-    }
-  pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
-					CommandMailbox, CommandMailboxDMA);
-  return (CommandStatus == DAC960_V2_NormalCompletion);
-}
-
-
-/*
-  DAC960_V1_ReadControllerConfiguration reads the Configuration Information
-  from DAC960 V1 Firmware Controllers and initializes the Controller structure.
-*/
-
-static bool DAC960_V1_ReadControllerConfiguration(DAC960_Controller_T
-						     *Controller)
-{
-  DAC960_V1_Enquiry2_T *Enquiry2;
-  dma_addr_t Enquiry2DMA;
-  DAC960_V1_Config2_T *Config2;
-  dma_addr_t Config2DMA;
-  int LogicalDriveNumber, Channel, TargetID;
-  struct dma_loaf local_dma;
-
-  if (!init_dma_loaf(Controller->PCIDevice, &local_dma,
-		sizeof(DAC960_V1_Enquiry2_T) + sizeof(DAC960_V1_Config2_T)))
-	return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
-
-  Enquiry2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Enquiry2_T), &Enquiry2DMA);
-  Config2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Config2_T), &Config2DMA);
-
-  if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry,
-			      Controller->V1.NewEnquiryDMA)) {
-    free_dma_loaf(Controller->PCIDevice, &local_dma);
-    return DAC960_Failure(Controller, "ENQUIRY");
-  }
-  memcpy(&Controller->V1.Enquiry, Controller->V1.NewEnquiry,
-						sizeof(DAC960_V1_Enquiry_T));
-
-  if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry2, Enquiry2DMA)) {
-    free_dma_loaf(Controller->PCIDevice, &local_dma);
-    return DAC960_Failure(Controller, "ENQUIRY2");
-  }
-
-  if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_ReadConfig2, Config2DMA)) {
-    free_dma_loaf(Controller->PCIDevice, &local_dma);
-    return DAC960_Failure(Controller, "READ CONFIG2");
-  }
-
-  if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_GetLogicalDriveInformation,
-			      Controller->V1.NewLogicalDriveInformationDMA)) {
-    free_dma_loaf(Controller->PCIDevice, &local_dma);
-    return DAC960_Failure(Controller, "GET LOGICAL DRIVE INFORMATION");
-  }
-  memcpy(&Controller->V1.LogicalDriveInformation,
-		Controller->V1.NewLogicalDriveInformation,
-		sizeof(DAC960_V1_LogicalDriveInformationArray_T));
-
-  for (Channel = 0; Channel < Enquiry2->ActualChannels; Channel++)
-    for (TargetID = 0; TargetID < Enquiry2->MaxTargets; TargetID++) {
-      if (!DAC960_V1_ExecuteType3D(Controller, DAC960_V1_GetDeviceState,
-				   Channel, TargetID,
-				   Controller->V1.NewDeviceStateDMA)) {
-    		free_dma_loaf(Controller->PCIDevice, &local_dma);
-		return DAC960_Failure(Controller, "GET DEVICE STATE");
-	}
-	memcpy(&Controller->V1.DeviceState[Channel][TargetID],
-		Controller->V1.NewDeviceState, sizeof(DAC960_V1_DeviceState_T));
-     }
-  /*
-    Initialize the Controller Model Name and Full Model Name fields.
-  */
-  switch (Enquiry2->HardwareID.SubModel)
-    {
-    case DAC960_V1_P_PD_PU:
-      if (Enquiry2->SCSICapability.BusSpeed == DAC960_V1_Ultra)
-	strcpy(Controller->ModelName, "DAC960PU");
-      else strcpy(Controller->ModelName, "DAC960PD");
-      break;
-    case DAC960_V1_PL:
-      strcpy(Controller->ModelName, "DAC960PL");
-      break;
-    case DAC960_V1_PG:
-      strcpy(Controller->ModelName, "DAC960PG");
-      break;
-    case DAC960_V1_PJ:
-      strcpy(Controller->ModelName, "DAC960PJ");
-      break;
-    case DAC960_V1_PR:
-      strcpy(Controller->ModelName, "DAC960PR");
-      break;
-    case DAC960_V1_PT:
-      strcpy(Controller->ModelName, "DAC960PT");
-      break;
-    case DAC960_V1_PTL0:
-      strcpy(Controller->ModelName, "DAC960PTL0");
-      break;
-    case DAC960_V1_PRL:
-      strcpy(Controller->ModelName, "DAC960PRL");
-      break;
-    case DAC960_V1_PTL1:
-      strcpy(Controller->ModelName, "DAC960PTL1");
-      break;
-    case DAC960_V1_1164P:
-      strcpy(Controller->ModelName, "DAC1164P");
-      break;
-    default:
-      free_dma_loaf(Controller->PCIDevice, &local_dma);
-      return DAC960_Failure(Controller, "MODEL VERIFICATION");
-    }
-  strcpy(Controller->FullModelName, "Mylex ");
-  strcat(Controller->FullModelName, Controller->ModelName);
-  /*
-    Initialize the Controller Firmware Version field and verify that it
-    is a supported firmware version.  The supported firmware versions are:
-
-    DAC1164P		    5.06 and above
-    DAC960PTL/PRL/PJ/PG	    4.06 and above
-    DAC960PU/PD/PL	    3.51 and above
-    DAC960PU/PD/PL/P	    2.73 and above
-  */
-#if defined(CONFIG_ALPHA)
-  /*
-    DEC Alpha machines were often equipped with DAC960 cards that were
-    OEMed from Mylex, and had their own custom firmware. Version 2.70,
-    the last custom FW revision to be released by DEC for these older
-    controllers, appears to work quite well with this driver.
-
-    Cards tested successfully were several versions each of the PD and
-    PU, called by DEC the KZPSC and KZPAC, respectively, and having
-    the Manufacturer Numbers (from Mylex), usually on a sticker on the
-    back of the board, of:
-
-    KZPSC:  D040347 (1-channel) or D040348 (2-channel) or D040349 (3-channel)
-    KZPAC:  D040395 (1-channel) or D040396 (2-channel) or D040397 (3-channel)
-  */
-# define FIRMWARE_27X	"2.70"
-#else
-# define FIRMWARE_27X	"2.73"
-#endif
-
-  if (Enquiry2->FirmwareID.MajorVersion == 0)
-    {
-      Enquiry2->FirmwareID.MajorVersion =
-	Controller->V1.Enquiry.MajorFirmwareVersion;
-      Enquiry2->FirmwareID.MinorVersion =
-	Controller->V1.Enquiry.MinorFirmwareVersion;
-      Enquiry2->FirmwareID.FirmwareType = '0';
-      Enquiry2->FirmwareID.TurnID = 0;
-    }
-  snprintf(Controller->FirmwareVersion, sizeof(Controller->FirmwareVersion),
-	   "%d.%02d-%c-%02d",
-	   Enquiry2->FirmwareID.MajorVersion,
-	   Enquiry2->FirmwareID.MinorVersion,
-	   Enquiry2->FirmwareID.FirmwareType,
-	   Enquiry2->FirmwareID.TurnID);
-  if (!((Controller->FirmwareVersion[0] == '5' &&
-	 strcmp(Controller->FirmwareVersion, "5.06") >= 0) ||
-	(Controller->FirmwareVersion[0] == '4' &&
-	 strcmp(Controller->FirmwareVersion, "4.06") >= 0) ||
-	(Controller->FirmwareVersion[0] == '3' &&
-	 strcmp(Controller->FirmwareVersion, "3.51") >= 0) ||
-	(Controller->FirmwareVersion[0] == '2' &&
-	 strcmp(Controller->FirmwareVersion, FIRMWARE_27X) >= 0)))
-    {
-      DAC960_Failure(Controller, "FIRMWARE VERSION VERIFICATION");
-      DAC960_Error("Firmware Version = '%s'\n", Controller,
-		   Controller->FirmwareVersion);
-      free_dma_loaf(Controller->PCIDevice, &local_dma);
-      return false;
-    }
-  /*
-    Initialize the Controller Channels, Targets, Memory Size, and SAF-TE
-    Enclosure Management Enabled fields.
-  */
-  Controller->Channels = Enquiry2->ActualChannels;
-  Controller->Targets = Enquiry2->MaxTargets;
-  Controller->MemorySize = Enquiry2->MemorySize >> 20;
-  Controller->V1.SAFTE_EnclosureManagementEnabled =
-    (Enquiry2->FaultManagementType == DAC960_V1_SAFTE);
-  /*
-    Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
-    Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
-    Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
-    less than the Controller Queue Depth to allow for an automatic drive
-    rebuild operation.
-  */
-  Controller->ControllerQueueDepth = Controller->V1.Enquiry.MaxCommands;
-  Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
-  if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
-    Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
-  Controller->LogicalDriveCount =
-    Controller->V1.Enquiry.NumberOfLogicalDrives;
-  Controller->MaxBlocksPerCommand = Enquiry2->MaxBlocksPerCommand;
-  Controller->ControllerScatterGatherLimit = Enquiry2->MaxScatterGatherEntries;
-  Controller->DriverScatterGatherLimit =
-    Controller->ControllerScatterGatherLimit;
-  if (Controller->DriverScatterGatherLimit > DAC960_V1_ScatterGatherLimit)
-    Controller->DriverScatterGatherLimit = DAC960_V1_ScatterGatherLimit;
-  /*
-    Initialize the Stripe Size, Segment Size, and Geometry Translation.
-  */
-  Controller->V1.StripeSize = Config2->BlocksPerStripe * Config2->BlockFactor
-			      >> (10 - DAC960_BlockSizeBits);
-  Controller->V1.SegmentSize = Config2->BlocksPerCacheLine * Config2->BlockFactor
-			       >> (10 - DAC960_BlockSizeBits);
-  switch (Config2->DriveGeometry)
-    {
-    case DAC960_V1_Geometry_128_32:
-      Controller->V1.GeometryTranslationHeads = 128;
-      Controller->V1.GeometryTranslationSectors = 32;
-      break;
-    case DAC960_V1_Geometry_255_63:
-      Controller->V1.GeometryTranslationHeads = 255;
-      Controller->V1.GeometryTranslationSectors = 63;
-      break;
-    default:
-      free_dma_loaf(Controller->PCIDevice, &local_dma);
-      return DAC960_Failure(Controller, "CONFIG2 DRIVE GEOMETRY");
-    }
-  /*
-    Initialize the Background Initialization Status.
-  */
-  if ((Controller->FirmwareVersion[0] == '4' &&
-      strcmp(Controller->FirmwareVersion, "4.08") >= 0) ||
-      (Controller->FirmwareVersion[0] == '5' &&
-       strcmp(Controller->FirmwareVersion, "5.08") >= 0))
-    {
-      Controller->V1.BackgroundInitializationStatusSupported = true;
-      DAC960_V1_ExecuteType3B(Controller,
-			      DAC960_V1_BackgroundInitializationControl, 0x20,
-			      Controller->
-			       V1.BackgroundInitializationStatusDMA);
-      memcpy(&Controller->V1.LastBackgroundInitializationStatus,
-		Controller->V1.BackgroundInitializationStatus,
-		sizeof(DAC960_V1_BackgroundInitializationStatus_T));
-    }
-  /*
-    Initialize the Logical Drive Initially Accessible flag.
-  */
-  for (LogicalDriveNumber = 0;
-       LogicalDriveNumber < Controller->LogicalDriveCount;
-       LogicalDriveNumber++)
-    if (Controller->V1.LogicalDriveInformation
-		       [LogicalDriveNumber].LogicalDriveState !=
-	DAC960_V1_LogicalDrive_Offline)
-      Controller->LogicalDriveInitiallyAccessible[LogicalDriveNumber] = true;
-  Controller->V1.LastRebuildStatus = DAC960_V1_NoRebuildOrCheckInProgress;
-  free_dma_loaf(Controller->PCIDevice, &local_dma);
-  return true;
-}
-
-
-/*
-  DAC960_V2_ReadControllerConfiguration reads the Configuration Information
-  from DAC960 V2 Firmware Controllers and initializes the Controller structure.
-*/
-
-static bool DAC960_V2_ReadControllerConfiguration(DAC960_Controller_T
-						     *Controller)
-{
-  DAC960_V2_ControllerInfo_T *ControllerInfo =
-    		&Controller->V2.ControllerInformation;
-  unsigned short LogicalDeviceNumber = 0;
-  int ModelNameLength;
-
-  /* Get data into dma-able area, then copy into permanent location */
-  if (!DAC960_V2_NewControllerInfo(Controller))
-    return DAC960_Failure(Controller, "GET CONTROLLER INFO");
-  memcpy(ControllerInfo, Controller->V2.NewControllerInformation,
-			sizeof(DAC960_V2_ControllerInfo_T));
-	 
-  
-  if (!DAC960_V2_GeneralInfo(Controller))
-    return DAC960_Failure(Controller, "GET HEALTH STATUS");
-
-  /*
-    Initialize the Controller Model Name and Full Model Name fields.
-  */
-  ModelNameLength = sizeof(ControllerInfo->ControllerName);
-  if (ModelNameLength > sizeof(Controller->ModelName)-1)
-    ModelNameLength = sizeof(Controller->ModelName)-1;
-  memcpy(Controller->ModelName, ControllerInfo->ControllerName,
-	 ModelNameLength);
-  ModelNameLength--;
-  while (Controller->ModelName[ModelNameLength] == ' ' ||
-	 Controller->ModelName[ModelNameLength] == '\0')
-    ModelNameLength--;
-  Controller->ModelName[++ModelNameLength] = '\0';
-  strcpy(Controller->FullModelName, "Mylex ");
-  strcat(Controller->FullModelName, Controller->ModelName);
-  /*
-    Initialize the Controller Firmware Version field.
-  */
-  sprintf(Controller->FirmwareVersion, "%d.%02d-%02d",
-	  ControllerInfo->FirmwareMajorVersion,
-	  ControllerInfo->FirmwareMinorVersion,
-	  ControllerInfo->FirmwareTurnNumber);
-  if (ControllerInfo->FirmwareMajorVersion == 6 &&
-      ControllerInfo->FirmwareMinorVersion == 0 &&
-      ControllerInfo->FirmwareTurnNumber < 1)
-    {
-      DAC960_Info("FIRMWARE VERSION %s DOES NOT PROVIDE THE CONTROLLER\n",
-		  Controller, Controller->FirmwareVersion);
-      DAC960_Info("STATUS MONITORING FUNCTIONALITY NEEDED BY THIS DRIVER.\n",
-		  Controller);
-      DAC960_Info("PLEASE UPGRADE TO VERSION 6.00-01 OR ABOVE.\n",
-		  Controller);
-    }
-  /*
-    Initialize the Controller Channels, Targets, and Memory Size.
-  */
-  Controller->Channels = ControllerInfo->NumberOfPhysicalChannelsPresent;
-  Controller->Targets =
-    ControllerInfo->MaximumTargetsPerChannel
-		    [ControllerInfo->NumberOfPhysicalChannelsPresent-1];
-  Controller->MemorySize = ControllerInfo->MemorySizeMB;
-  /*
-    Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
-    Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
-    Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
-    less than the Controller Queue Depth to allow for an automatic drive
-    rebuild operation.
-  */
-  Controller->ControllerQueueDepth = ControllerInfo->MaximumParallelCommands;
-  Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
-  if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
-    Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
-  Controller->LogicalDriveCount = ControllerInfo->LogicalDevicesPresent;
-  Controller->MaxBlocksPerCommand =
-    ControllerInfo->MaximumDataTransferSizeInBlocks;
-  Controller->ControllerScatterGatherLimit =
-    ControllerInfo->MaximumScatterGatherEntries;
-  Controller->DriverScatterGatherLimit =
-    Controller->ControllerScatterGatherLimit;
-  if (Controller->DriverScatterGatherLimit > DAC960_V2_ScatterGatherLimit)
-    Controller->DriverScatterGatherLimit = DAC960_V2_ScatterGatherLimit;
-  /*
-    Initialize the Logical Device Information.
-  */
-  while (true)
-    {
-      DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
-	Controller->V2.NewLogicalDeviceInformation;
-      DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo;
-      DAC960_V2_PhysicalDevice_T PhysicalDevice;
-
-      if (!DAC960_V2_NewLogicalDeviceInfo(Controller, LogicalDeviceNumber))
-	break;
-      LogicalDeviceNumber = NewLogicalDeviceInfo->LogicalDeviceNumber;
-      if (LogicalDeviceNumber >= DAC960_MaxLogicalDrives) {
-	DAC960_Error("DAC960: Logical Drive Number %d not supported\n",
-		       Controller, LogicalDeviceNumber);
-		break;
-      }
-      if (NewLogicalDeviceInfo->DeviceBlockSizeInBytes != DAC960_BlockSize) {
-	DAC960_Error("DAC960: Logical Drive Block Size %d not supported\n",
-	      Controller, NewLogicalDeviceInfo->DeviceBlockSizeInBytes);
-        LogicalDeviceNumber++;
-        continue;
-      }
-      PhysicalDevice.Controller = 0;
-      PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
-      PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
-      PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
-      Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
-	PhysicalDevice;
-      if (NewLogicalDeviceInfo->LogicalDeviceState !=
-	  DAC960_V2_LogicalDevice_Offline)
-	Controller->LogicalDriveInitiallyAccessible[LogicalDeviceNumber] = true;
-      LogicalDeviceInfo = kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T),
-				   GFP_ATOMIC);
-      if (LogicalDeviceInfo == NULL)
-	return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
-      Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
-	LogicalDeviceInfo;
-      memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
-	     sizeof(DAC960_V2_LogicalDeviceInfo_T));
-      LogicalDeviceNumber++;
-    }
-  return true;
-}
-
-
-/*
-  DAC960_ReportControllerConfiguration reports the Configuration Information
-  for Controller.
-*/
-
-static bool DAC960_ReportControllerConfiguration(DAC960_Controller_T
-						    *Controller)
-{
-  DAC960_Info("Configuring Mylex %s PCI RAID Controller\n",
-	      Controller, Controller->ModelName);
-  DAC960_Info("  Firmware Version: %s, Channels: %d, Memory Size: %dMB\n",
-	      Controller, Controller->FirmwareVersion,
-	      Controller->Channels, Controller->MemorySize);
-  DAC960_Info("  PCI Bus: %d, Device: %d, Function: %d, I/O Address: ",
-	      Controller, Controller->Bus,
-	      Controller->Device, Controller->Function);
-  if (Controller->IO_Address == 0)
-    DAC960_Info("Unassigned\n", Controller);
-  else DAC960_Info("0x%X\n", Controller, Controller->IO_Address);
-  DAC960_Info("  PCI Address: 0x%X mapped at 0x%lX, IRQ Channel: %d\n",
-	      Controller, Controller->PCI_Address,
-	      (unsigned long) Controller->BaseAddress,
-	      Controller->IRQ_Channel);
-  DAC960_Info("  Controller Queue Depth: %d, "
-	      "Maximum Blocks per Command: %d\n",
-	      Controller, Controller->ControllerQueueDepth,
-	      Controller->MaxBlocksPerCommand);
-  DAC960_Info("  Driver Queue Depth: %d, "
-	      "Scatter/Gather Limit: %d of %d Segments\n",
-	      Controller, Controller->DriverQueueDepth,
-	      Controller->DriverScatterGatherLimit,
-	      Controller->ControllerScatterGatherLimit);
-  if (Controller->FirmwareType == DAC960_V1_Controller)
-    {
-      DAC960_Info("  Stripe Size: %dKB, Segment Size: %dKB, "
-		  "BIOS Geometry: %d/%d\n", Controller,
-		  Controller->V1.StripeSize,
-		  Controller->V1.SegmentSize,
-		  Controller->V1.GeometryTranslationHeads,
-		  Controller->V1.GeometryTranslationSectors);
-      if (Controller->V1.SAFTE_EnclosureManagementEnabled)
-	DAC960_Info("  SAF-TE Enclosure Management Enabled\n", Controller);
-    }
-  return true;
-}
-
-
-/*
-  DAC960_V1_ReadDeviceConfiguration reads the Device Configuration Information
-  for DAC960 V1 Firmware Controllers by requesting the SCSI Inquiry and SCSI
-  Inquiry Unit Serial Number information for each device connected to
-  Controller.
-*/
-
-static bool DAC960_V1_ReadDeviceConfiguration(DAC960_Controller_T
-						 *Controller)
-{
-  struct dma_loaf local_dma;
-
-  dma_addr_t DCDBs_dma[DAC960_V1_MaxChannels];
-  DAC960_V1_DCDB_T *DCDBs_cpu[DAC960_V1_MaxChannels];
-
-  dma_addr_t SCSI_Inquiry_dma[DAC960_V1_MaxChannels];
-  DAC960_SCSI_Inquiry_T *SCSI_Inquiry_cpu[DAC960_V1_MaxChannels];
-
-  dma_addr_t SCSI_NewInquiryUnitSerialNumberDMA[DAC960_V1_MaxChannels];
-  DAC960_SCSI_Inquiry_UnitSerialNumber_T *SCSI_NewInquiryUnitSerialNumberCPU[DAC960_V1_MaxChannels];
-
-  struct completion Completions[DAC960_V1_MaxChannels];
-  unsigned long flags;
-  int Channel, TargetID;
-
-  if (!init_dma_loaf(Controller->PCIDevice, &local_dma, 
-		DAC960_V1_MaxChannels*(sizeof(DAC960_V1_DCDB_T) +
-			sizeof(DAC960_SCSI_Inquiry_T) +
-			sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T))))
-     return DAC960_Failure(Controller,
-                        "DMA ALLOCATION FAILED IN ReadDeviceConfiguration"); 
-   
-  for (Channel = 0; Channel < Controller->Channels; Channel++) {
-	DCDBs_cpu[Channel] = slice_dma_loaf(&local_dma,
-			sizeof(DAC960_V1_DCDB_T), DCDBs_dma + Channel);
-	SCSI_Inquiry_cpu[Channel] = slice_dma_loaf(&local_dma,
-			sizeof(DAC960_SCSI_Inquiry_T),
-			SCSI_Inquiry_dma + Channel);
-	SCSI_NewInquiryUnitSerialNumberCPU[Channel] = slice_dma_loaf(&local_dma,
-			sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
-			SCSI_NewInquiryUnitSerialNumberDMA + Channel);
-  }
-		
-  for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
-    {
-      /*
-       * For each channel, submit a probe for a device on that channel.
-       * The timeout interval for a device that is present is 10 seconds.
-       * With this approach, the timeout periods can elapse in parallel
-       * on each channel.
-       */
-      for (Channel = 0; Channel < Controller->Channels; Channel++)
-	{
-	  dma_addr_t NewInquiryStandardDataDMA = SCSI_Inquiry_dma[Channel];
-  	  DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
-  	  dma_addr_t DCDB_dma = DCDBs_dma[Channel];
-	  DAC960_Command_T *Command = Controller->Commands[Channel];
-          struct completion *Completion = &Completions[Channel];
-
-	  init_completion(Completion);
-	  DAC960_V1_ClearCommand(Command);
-	  Command->CommandType = DAC960_ImmediateCommand;
-	  Command->Completion = Completion;
-	  Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
-	  Command->V1.CommandMailbox.Type3.BusAddress = DCDB_dma;
-	  DCDB->Channel = Channel;
-	  DCDB->TargetID = TargetID;
-	  DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
-	  DCDB->EarlyStatus = false;
-	  DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
-	  DCDB->NoAutomaticRequestSense = false;
-	  DCDB->DisconnectPermitted = true;
-	  DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
-	  DCDB->BusAddress = NewInquiryStandardDataDMA;
-	  DCDB->CDBLength = 6;
-	  DCDB->TransferLengthHigh4 = 0;
-	  DCDB->SenseLength = sizeof(DCDB->SenseData);
-	  DCDB->CDB[0] = 0x12; /* INQUIRY */
-	  DCDB->CDB[1] = 0; /* EVPD = 0 */
-	  DCDB->CDB[2] = 0; /* Page Code */
-	  DCDB->CDB[3] = 0; /* Reserved */
-	  DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
-	  DCDB->CDB[5] = 0; /* Control */
-
-	  spin_lock_irqsave(&Controller->queue_lock, flags);
-	  DAC960_QueueCommand(Command);
-	  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-	}
-      /*
-       * Wait for the problems submitted in the previous loop
-       * to complete.  On the probes that are successful, 
-       * get the serial number of the device that was found.
-       */
-      for (Channel = 0; Channel < Controller->Channels; Channel++)
-	{
-	  DAC960_SCSI_Inquiry_T *InquiryStandardData =
-	    &Controller->V1.InquiryStandardData[Channel][TargetID];
-	  DAC960_SCSI_Inquiry_T *NewInquiryStandardData = SCSI_Inquiry_cpu[Channel];
-	  dma_addr_t NewInquiryUnitSerialNumberDMA =
-			SCSI_NewInquiryUnitSerialNumberDMA[Channel];
-	  DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
-	    		SCSI_NewInquiryUnitSerialNumberCPU[Channel];
-	  DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
-	    &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
-	  DAC960_Command_T *Command = Controller->Commands[Channel];
-  	  DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
-          struct completion *Completion = &Completions[Channel];
-
-	  wait_for_completion(Completion);
-
-	  if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
-	    memset(InquiryStandardData, 0, sizeof(DAC960_SCSI_Inquiry_T));
-	    InquiryStandardData->PeripheralDeviceType = 0x1F;
-	    continue;
-	  } else
-	    memcpy(InquiryStandardData, NewInquiryStandardData, sizeof(DAC960_SCSI_Inquiry_T));
-	
-	  /* Preserve Channel and TargetID values from the previous loop */
-	  Command->Completion = Completion;
-	  DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
-	  DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
-	  DCDB->SenseLength = sizeof(DCDB->SenseData);
-	  DCDB->CDB[0] = 0x12; /* INQUIRY */
-	  DCDB->CDB[1] = 1; /* EVPD = 1 */
-	  DCDB->CDB[2] = 0x80; /* Page Code */
-	  DCDB->CDB[3] = 0; /* Reserved */
-	  DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
-	  DCDB->CDB[5] = 0; /* Control */
-
-	  spin_lock_irqsave(&Controller->queue_lock, flags);
-	  DAC960_QueueCommand(Command);
-	  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-	  wait_for_completion(Completion);
-
-	  if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
-	  	memset(InquiryUnitSerialNumber, 0,
-			sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
-	  	InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
-	  } else
-	  	memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
-			sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
-	}
-    }
-    free_dma_loaf(Controller->PCIDevice, &local_dma);
-  return true;
-}
-
-
-/*
-  DAC960_V2_ReadDeviceConfiguration reads the Device Configuration Information
-  for DAC960 V2 Firmware Controllers by requesting the Physical Device
-  Information and SCSI Inquiry Unit Serial Number information for each
-  device connected to Controller.
-*/
-
-static bool DAC960_V2_ReadDeviceConfiguration(DAC960_Controller_T
-						 *Controller)
-{
-  unsigned char Channel = 0, TargetID = 0, LogicalUnit = 0;
-  unsigned short PhysicalDeviceIndex = 0;
-
-  while (true)
-    {
-      DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
-		Controller->V2.NewPhysicalDeviceInformation;
-      DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo;
-      DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
-		Controller->V2.NewInquiryUnitSerialNumber;
-      DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber;
-
-      if (!DAC960_V2_NewPhysicalDeviceInfo(Controller, Channel, TargetID, LogicalUnit))
-	  break;
-
-      PhysicalDeviceInfo = kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T),
-				    GFP_ATOMIC);
-      if (PhysicalDeviceInfo == NULL)
-		return DAC960_Failure(Controller, "PHYSICAL DEVICE ALLOCATION");
-      Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex] =
-		PhysicalDeviceInfo;
-      memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
-		sizeof(DAC960_V2_PhysicalDeviceInfo_T));
-
-      InquiryUnitSerialNumber = kmalloc(
-	      sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T), GFP_ATOMIC);
-      if (InquiryUnitSerialNumber == NULL) {
-	kfree(PhysicalDeviceInfo);
-	return DAC960_Failure(Controller, "SERIAL NUMBER ALLOCATION");
-      }
-      Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex] =
-		InquiryUnitSerialNumber;
-
-      Channel = NewPhysicalDeviceInfo->Channel;
-      TargetID = NewPhysicalDeviceInfo->TargetID;
-      LogicalUnit = NewPhysicalDeviceInfo->LogicalUnit;
-
-      /*
-	 Some devices do NOT have Unit Serial Numbers.
-	 This command fails for them.  But, we still want to
-	 remember those devices are there.  Construct a
-	 UnitSerialNumber structure for the failure case.
-      */
-      if (!DAC960_V2_NewInquiryUnitSerialNumber(Controller, Channel, TargetID, LogicalUnit)) {
-      	memset(InquiryUnitSerialNumber, 0,
-             sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
-     	InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
-      } else
-      	memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
-		sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
-
-      PhysicalDeviceIndex++;
-      LogicalUnit++;
-    }
-  return true;
-}
-
-
-/*
-  DAC960_SanitizeInquiryData sanitizes the Vendor, Model, Revision, and
-  Product Serial Number fields of the Inquiry Standard Data and Inquiry
-  Unit Serial Number structures.
-*/
-
-static void DAC960_SanitizeInquiryData(DAC960_SCSI_Inquiry_T
-					 *InquiryStandardData,
-				       DAC960_SCSI_Inquiry_UnitSerialNumber_T
-					 *InquiryUnitSerialNumber,
-				       unsigned char *Vendor,
-				       unsigned char *Model,
-				       unsigned char *Revision,
-				       unsigned char *SerialNumber)
-{
-  int SerialNumberLength, i;
-  if (InquiryStandardData->PeripheralDeviceType == 0x1F) return;
-  for (i = 0; i < sizeof(InquiryStandardData->VendorIdentification); i++)
-    {
-      unsigned char VendorCharacter =
-	InquiryStandardData->VendorIdentification[i];
-      Vendor[i] = (VendorCharacter >= ' ' && VendorCharacter <= '~'
-		   ? VendorCharacter : ' ');
-    }
-  Vendor[sizeof(InquiryStandardData->VendorIdentification)] = '\0';
-  for (i = 0; i < sizeof(InquiryStandardData->ProductIdentification); i++)
-    {
-      unsigned char ModelCharacter =
-	InquiryStandardData->ProductIdentification[i];
-      Model[i] = (ModelCharacter >= ' ' && ModelCharacter <= '~'
-		  ? ModelCharacter : ' ');
-    }
-  Model[sizeof(InquiryStandardData->ProductIdentification)] = '\0';
-  for (i = 0; i < sizeof(InquiryStandardData->ProductRevisionLevel); i++)
-    {
-      unsigned char RevisionCharacter =
-	InquiryStandardData->ProductRevisionLevel[i];
-      Revision[i] = (RevisionCharacter >= ' ' && RevisionCharacter <= '~'
-		     ? RevisionCharacter : ' ');
-    }
-  Revision[sizeof(InquiryStandardData->ProductRevisionLevel)] = '\0';
-  if (InquiryUnitSerialNumber->PeripheralDeviceType == 0x1F) return;
-  SerialNumberLength = InquiryUnitSerialNumber->PageLength;
-  if (SerialNumberLength >
-      sizeof(InquiryUnitSerialNumber->ProductSerialNumber))
-    SerialNumberLength = sizeof(InquiryUnitSerialNumber->ProductSerialNumber);
-  for (i = 0; i < SerialNumberLength; i++)
-    {
-      unsigned char SerialNumberCharacter =
-	InquiryUnitSerialNumber->ProductSerialNumber[i];
-      SerialNumber[i] =
-	(SerialNumberCharacter >= ' ' && SerialNumberCharacter <= '~'
-	 ? SerialNumberCharacter : ' ');
-    }
-  SerialNumber[SerialNumberLength] = '\0';
-}
-
-
-/*
-  DAC960_V1_ReportDeviceConfiguration reports the Device Configuration
-  Information for DAC960 V1 Firmware Controllers.
-*/
-
-static bool DAC960_V1_ReportDeviceConfiguration(DAC960_Controller_T
-						   *Controller)
-{
-  int LogicalDriveNumber, Channel, TargetID;
-  DAC960_Info("  Physical Devices:\n", Controller);
-  for (Channel = 0; Channel < Controller->Channels; Channel++)
-    for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
-      {
-	DAC960_SCSI_Inquiry_T *InquiryStandardData =
-	  &Controller->V1.InquiryStandardData[Channel][TargetID];
-	DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
-	  &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
-	DAC960_V1_DeviceState_T *DeviceState =
-	  &Controller->V1.DeviceState[Channel][TargetID];
-	DAC960_V1_ErrorTableEntry_T *ErrorEntry =
-	  &Controller->V1.ErrorTable.ErrorTableEntries[Channel][TargetID];
-	char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
-	char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
-	char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
-	char SerialNumber[1+sizeof(InquiryUnitSerialNumber
-				   ->ProductSerialNumber)];
-	if (InquiryStandardData->PeripheralDeviceType == 0x1F) continue;
-	DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
-				   Vendor, Model, Revision, SerialNumber);
-	DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
-		    Controller, Channel, TargetID, (TargetID < 10 ? " " : ""),
-		    Vendor, Model, Revision);
-	if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
-	  DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
-	if (DeviceState->Present &&
-	    DeviceState->DeviceType == DAC960_V1_DiskType)
-	  {
-	    if (Controller->V1.DeviceResetCount[Channel][TargetID] > 0)
-	      DAC960_Info("         Disk Status: %s, %u blocks, %d resets\n",
-			  Controller,
-			  (DeviceState->DeviceState == DAC960_V1_Device_Dead
-			   ? "Dead"
-			   : DeviceState->DeviceState
-			     == DAC960_V1_Device_WriteOnly
-			     ? "Write-Only"
-			     : DeviceState->DeviceState
-			       == DAC960_V1_Device_Online
-			       ? "Online" : "Standby"),
-			  DeviceState->DiskSize,
-			  Controller->V1.DeviceResetCount[Channel][TargetID]);
-	    else
-	      DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
-			  (DeviceState->DeviceState == DAC960_V1_Device_Dead
-			   ? "Dead"
-			   : DeviceState->DeviceState
-			     == DAC960_V1_Device_WriteOnly
-			     ? "Write-Only"
-			     : DeviceState->DeviceState
-			       == DAC960_V1_Device_Online
-			       ? "Online" : "Standby"),
-			  DeviceState->DiskSize);
-	  }
-	if (ErrorEntry->ParityErrorCount > 0 ||
-	    ErrorEntry->SoftErrorCount > 0 ||
-	    ErrorEntry->HardErrorCount > 0 ||
-	    ErrorEntry->MiscErrorCount > 0)
-	  DAC960_Info("         Errors - Parity: %d, Soft: %d, "
-		      "Hard: %d, Misc: %d\n", Controller,
-		      ErrorEntry->ParityErrorCount,
-		      ErrorEntry->SoftErrorCount,
-		      ErrorEntry->HardErrorCount,
-		      ErrorEntry->MiscErrorCount);
-      }
-  DAC960_Info("  Logical Drives:\n", Controller);
-  for (LogicalDriveNumber = 0;
-       LogicalDriveNumber < Controller->LogicalDriveCount;
-       LogicalDriveNumber++)
-    {
-      DAC960_V1_LogicalDriveInformation_T *LogicalDriveInformation =
-	&Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
-      DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks, %s\n",
-		  Controller, Controller->ControllerNumber, LogicalDriveNumber,
-		  LogicalDriveInformation->RAIDLevel,
-		  (LogicalDriveInformation->LogicalDriveState
-		   == DAC960_V1_LogicalDrive_Online
-		   ? "Online"
-		   : LogicalDriveInformation->LogicalDriveState
-		     == DAC960_V1_LogicalDrive_Critical
-		     ? "Critical" : "Offline"),
-		  LogicalDriveInformation->LogicalDriveSize,
-		  (LogicalDriveInformation->WriteBack
-		   ? "Write Back" : "Write Thru"));
-    }
-  return true;
-}
-
-
-/*
-  DAC960_V2_ReportDeviceConfiguration reports the Device Configuration
-  Information for DAC960 V2 Firmware Controllers.
-*/
-
-static bool DAC960_V2_ReportDeviceConfiguration(DAC960_Controller_T
-						   *Controller)
-{
-  int PhysicalDeviceIndex, LogicalDriveNumber;
-  DAC960_Info("  Physical Devices:\n", Controller);
-  for (PhysicalDeviceIndex = 0;
-       PhysicalDeviceIndex < DAC960_V2_MaxPhysicalDevices;
-       PhysicalDeviceIndex++)
-    {
-      DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
-	Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
-      DAC960_SCSI_Inquiry_T *InquiryStandardData =
-	(DAC960_SCSI_Inquiry_T *) &PhysicalDeviceInfo->SCSI_InquiryData;
-      DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
-	Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
-      char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
-      char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
-      char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
-      char SerialNumber[1+sizeof(InquiryUnitSerialNumber->ProductSerialNumber)];
-      if (PhysicalDeviceInfo == NULL) break;
-      DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
-				 Vendor, Model, Revision, SerialNumber);
-      DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
-		  Controller,
-		  PhysicalDeviceInfo->Channel,
-		  PhysicalDeviceInfo->TargetID,
-		  (PhysicalDeviceInfo->TargetID < 10 ? " " : ""),
-		  Vendor, Model, Revision);
-      if (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers == 0)
-	DAC960_Info("         %sAsynchronous\n", Controller,
-		    (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
-		     ? "Wide " :""));
-      else
-	DAC960_Info("         %sSynchronous at %d MB/sec\n", Controller,
-		    (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
-		     ? "Wide " :""),
-		    (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers
-		     * PhysicalDeviceInfo->NegotiatedDataWidthBits/8));
-      if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
-	DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
-      if (PhysicalDeviceInfo->PhysicalDeviceState ==
-	  DAC960_V2_Device_Unconfigured)
-	continue;
-      DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
-		  (PhysicalDeviceInfo->PhysicalDeviceState
-		   == DAC960_V2_Device_Online
-		   ? "Online"
-		   : PhysicalDeviceInfo->PhysicalDeviceState
-		     == DAC960_V2_Device_Rebuild
-		     ? "Rebuild"
-		     : PhysicalDeviceInfo->PhysicalDeviceState
-		       == DAC960_V2_Device_Missing
-		       ? "Missing"
-		       : PhysicalDeviceInfo->PhysicalDeviceState
-			 == DAC960_V2_Device_Critical
-			 ? "Critical"
-			 : PhysicalDeviceInfo->PhysicalDeviceState
-			   == DAC960_V2_Device_Dead
-			   ? "Dead"
-			   : PhysicalDeviceInfo->PhysicalDeviceState
-			     == DAC960_V2_Device_SuspectedDead
-			     ? "Suspected-Dead"
-			     : PhysicalDeviceInfo->PhysicalDeviceState
-			       == DAC960_V2_Device_CommandedOffline
-			       ? "Commanded-Offline"
-			       : PhysicalDeviceInfo->PhysicalDeviceState
-				 == DAC960_V2_Device_Standby
-				 ? "Standby" : "Unknown"),
-		  PhysicalDeviceInfo->ConfigurableDeviceSize);
-      if (PhysicalDeviceInfo->ParityErrors == 0 &&
-	  PhysicalDeviceInfo->SoftErrors == 0 &&
-	  PhysicalDeviceInfo->HardErrors == 0 &&
-	  PhysicalDeviceInfo->MiscellaneousErrors == 0 &&
-	  PhysicalDeviceInfo->CommandTimeouts == 0 &&
-	  PhysicalDeviceInfo->Retries == 0 &&
-	  PhysicalDeviceInfo->Aborts == 0 &&
-	  PhysicalDeviceInfo->PredictedFailuresDetected == 0)
-	continue;
-      DAC960_Info("         Errors - Parity: %d, Soft: %d, "
-		  "Hard: %d, Misc: %d\n", Controller,
-		  PhysicalDeviceInfo->ParityErrors,
-		  PhysicalDeviceInfo->SoftErrors,
-		  PhysicalDeviceInfo->HardErrors,
-		  PhysicalDeviceInfo->MiscellaneousErrors);
-      DAC960_Info("                  Timeouts: %d, Retries: %d, "
-		  "Aborts: %d, Predicted: %d\n", Controller,
-		  PhysicalDeviceInfo->CommandTimeouts,
-		  PhysicalDeviceInfo->Retries,
-		  PhysicalDeviceInfo->Aborts,
-		  PhysicalDeviceInfo->PredictedFailuresDetected);
-    }
-  DAC960_Info("  Logical Drives:\n", Controller);
-  for (LogicalDriveNumber = 0;
-       LogicalDriveNumber < DAC960_MaxLogicalDrives;
-       LogicalDriveNumber++)
-    {
-      DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
-	Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
-      static const unsigned char *ReadCacheStatus[] = {
-        "Read Cache Disabled",
-        "Read Cache Enabled",
-        "Read Ahead Enabled",
-        "Intelligent Read Ahead Enabled",
-        "-", "-", "-", "-"
-      };
-      static const unsigned char *WriteCacheStatus[] = {
-        "Write Cache Disabled",
-        "Logical Device Read Only",
-        "Write Cache Enabled",
-        "Intelligent Write Cache Enabled",
-        "-", "-", "-", "-"
-      };
-      unsigned char *GeometryTranslation;
-      if (LogicalDeviceInfo == NULL) continue;
-      switch (LogicalDeviceInfo->DriveGeometry)
-	{
-	case DAC960_V2_Geometry_128_32:
-	  GeometryTranslation = "128/32";
-	  break;
-	case DAC960_V2_Geometry_255_63:
-	  GeometryTranslation = "255/63";
-	  break;
-	default:
-	  GeometryTranslation = "Invalid";
-	  DAC960_Error("Illegal Logical Device Geometry %d\n",
-		       Controller, LogicalDeviceInfo->DriveGeometry);
-	  break;
-	}
-      DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks\n",
-		  Controller, Controller->ControllerNumber, LogicalDriveNumber,
-		  LogicalDeviceInfo->RAIDLevel,
-		  (LogicalDeviceInfo->LogicalDeviceState
-		   == DAC960_V2_LogicalDevice_Online
-		   ? "Online"
-		   : LogicalDeviceInfo->LogicalDeviceState
-		     == DAC960_V2_LogicalDevice_Critical
-		     ? "Critical" : "Offline"),
-		  LogicalDeviceInfo->ConfigurableDeviceSize);
-      DAC960_Info("                  Logical Device %s, BIOS Geometry: %s\n",
-		  Controller,
-		  (LogicalDeviceInfo->LogicalDeviceControl
-				     .LogicalDeviceInitialized
-		   ? "Initialized" : "Uninitialized"),
-		  GeometryTranslation);
-      if (LogicalDeviceInfo->StripeSize == 0)
-	{
-	  if (LogicalDeviceInfo->CacheLineSize == 0)
-	    DAC960_Info("                  Stripe Size: N/A, "
-			"Segment Size: N/A\n", Controller);
-	  else
-	    DAC960_Info("                  Stripe Size: N/A, "
-			"Segment Size: %dKB\n", Controller,
-			1 << (LogicalDeviceInfo->CacheLineSize - 2));
-	}
-      else
-	{
-	  if (LogicalDeviceInfo->CacheLineSize == 0)
-	    DAC960_Info("                  Stripe Size: %dKB, "
-			"Segment Size: N/A\n", Controller,
-			1 << (LogicalDeviceInfo->StripeSize - 2));
-	  else
-	    DAC960_Info("                  Stripe Size: %dKB, "
-			"Segment Size: %dKB\n", Controller,
-			1 << (LogicalDeviceInfo->StripeSize - 2),
-			1 << (LogicalDeviceInfo->CacheLineSize - 2));
-	}
-      DAC960_Info("                  %s, %s\n", Controller,
-		  ReadCacheStatus[
-		    LogicalDeviceInfo->LogicalDeviceControl.ReadCache],
-		  WriteCacheStatus[
-		    LogicalDeviceInfo->LogicalDeviceControl.WriteCache]);
-      if (LogicalDeviceInfo->SoftErrors > 0 ||
-	  LogicalDeviceInfo->CommandsFailed > 0 ||
-	  LogicalDeviceInfo->DeferredWriteErrors)
-	DAC960_Info("                  Errors - Soft: %d, Failed: %d, "
-		    "Deferred Write: %d\n", Controller,
-		    LogicalDeviceInfo->SoftErrors,
-		    LogicalDeviceInfo->CommandsFailed,
-		    LogicalDeviceInfo->DeferredWriteErrors);
-
-    }
-  return true;
-}
-
-/*
-  DAC960_RegisterBlockDevice registers the Block Device structures
-  associated with Controller.
-*/
-
-static bool DAC960_RegisterBlockDevice(DAC960_Controller_T *Controller)
-{
-  int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
-  int n;
-
-  /*
-    Register the Block Device Major Number for this DAC960 Controller.
-  */
-  if (register_blkdev(MajorNumber, "dac960") < 0)
-      return false;
-
-  for (n = 0; n < DAC960_MaxLogicalDrives; n++) {
-	struct gendisk *disk = Controller->disks[n];
-  	struct request_queue *RequestQueue;
-
-	/* for now, let all request queues share controller's lock */
-  	RequestQueue = blk_init_queue(DAC960_RequestFunction,&Controller->queue_lock);
-  	if (!RequestQueue) {
-		printk("DAC960: failure to allocate request queue\n");
-		continue;
-  	}
-  	Controller->RequestQueue[n] = RequestQueue;
-  	RequestQueue->queuedata = Controller;
-	blk_queue_max_segments(RequestQueue, Controller->DriverScatterGatherLimit);
-	blk_queue_max_hw_sectors(RequestQueue, Controller->MaxBlocksPerCommand);
-	disk->queue = RequestQueue;
-	sprintf(disk->disk_name, "rd/c%dd%d", Controller->ControllerNumber, n);
-	disk->major = MajorNumber;
-	disk->first_minor = n << DAC960_MaxPartitionsBits;
-	disk->fops = &DAC960_BlockDeviceOperations;
-   }
-  /*
-    Indicate the Block Device Registration completed successfully,
-  */
-  return true;
-}
-
-
-/*
-  DAC960_UnregisterBlockDevice unregisters the Block Device structures
-  associated with Controller.
-*/
-
-static void DAC960_UnregisterBlockDevice(DAC960_Controller_T *Controller)
-{
-  int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
-  int disk;
-
-  /* does order matter when deleting gendisk and cleanup in request queue? */
-  for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
-	del_gendisk(Controller->disks[disk]);
-	blk_cleanup_queue(Controller->RequestQueue[disk]);
-	Controller->RequestQueue[disk] = NULL;
-  }
-
-  /*
-    Unregister the Block Device Major Number for this DAC960 Controller.
-  */
-  unregister_blkdev(MajorNumber, "dac960");
-}
-
-/*
-  DAC960_ComputeGenericDiskInfo computes the values for the Generic Disk
-  Information Partition Sector Counts and Block Sizes.
-*/
-
-static void DAC960_ComputeGenericDiskInfo(DAC960_Controller_T *Controller)
-{
-	int disk;
-	for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++)
-		set_capacity(Controller->disks[disk], disk_size(Controller, disk));
-}
-
-/*
-  DAC960_ReportErrorStatus reports Controller BIOS Messages passed through
-  the Error Status Register when the driver performs the BIOS handshaking.
-  It returns true for fatal errors and false otherwise.
-*/
-
-static bool DAC960_ReportErrorStatus(DAC960_Controller_T *Controller,
-					unsigned char ErrorStatus,
-					unsigned char Parameter0,
-					unsigned char Parameter1)
-{
-  switch (ErrorStatus)
-    {
-    case 0x00:
-      DAC960_Notice("Physical Device %d:%d Not Responding\n",
-		    Controller, Parameter1, Parameter0);
-      break;
-    case 0x08:
-      if (Controller->DriveSpinUpMessageDisplayed) break;
-      DAC960_Notice("Spinning Up Drives\n", Controller);
-      Controller->DriveSpinUpMessageDisplayed = true;
-      break;
-    case 0x30:
-      DAC960_Notice("Configuration Checksum Error\n", Controller);
-      break;
-    case 0x60:
-      DAC960_Notice("Mirror Race Recovery Failed\n", Controller);
-      break;
-    case 0x70:
-      DAC960_Notice("Mirror Race Recovery In Progress\n", Controller);
-      break;
-    case 0x90:
-      DAC960_Notice("Physical Device %d:%d COD Mismatch\n",
-		    Controller, Parameter1, Parameter0);
-      break;
-    case 0xA0:
-      DAC960_Notice("Logical Drive Installation Aborted\n", Controller);
-      break;
-    case 0xB0:
-      DAC960_Notice("Mirror Race On A Critical Logical Drive\n", Controller);
-      break;
-    case 0xD0:
-      DAC960_Notice("New Controller Configuration Found\n", Controller);
-      break;
-    case 0xF0:
-      DAC960_Error("Fatal Memory Parity Error for Controller at\n", Controller);
-      return true;
-    default:
-      DAC960_Error("Unknown Initialization Error %02X for Controller at\n",
-		   Controller, ErrorStatus);
-      return true;
-    }
-  return false;
-}
-
-
-/*
- * DAC960_DetectCleanup releases the resources that were allocated
- * during DAC960_DetectController().  DAC960_DetectController can
- * has several internal failure points, so not ALL resources may 
- * have been allocated.  It's important to free only
- * resources that HAVE been allocated.  The code below always
- * tests that the resource has been allocated before attempting to
- * free it.
- */
-static void DAC960_DetectCleanup(DAC960_Controller_T *Controller)
-{
-  int i;
-
-  /* Free the memory mailbox, status, and related structures */
-  free_dma_loaf(Controller->PCIDevice, &Controller->DmaPages);
-  if (Controller->MemoryMappedAddress) {
-  	switch(Controller->HardwareType)
-  	{
-		case DAC960_GEM_Controller:
-			DAC960_GEM_DisableInterrupts(Controller->BaseAddress);
-			break;
-		case DAC960_BA_Controller:
-			DAC960_BA_DisableInterrupts(Controller->BaseAddress);
-			break;
-		case DAC960_LP_Controller:
-			DAC960_LP_DisableInterrupts(Controller->BaseAddress);
-			break;
-		case DAC960_LA_Controller:
-			DAC960_LA_DisableInterrupts(Controller->BaseAddress);
-			break;
-		case DAC960_PG_Controller:
-			DAC960_PG_DisableInterrupts(Controller->BaseAddress);
-			break;
-		case DAC960_PD_Controller:
-			DAC960_PD_DisableInterrupts(Controller->BaseAddress);
-			break;
-		case DAC960_P_Controller:
-			DAC960_PD_DisableInterrupts(Controller->BaseAddress);
-			break;
-  	}
-  	iounmap(Controller->MemoryMappedAddress);
-  }
-  if (Controller->IRQ_Channel)
-  	free_irq(Controller->IRQ_Channel, Controller);
-  if (Controller->IO_Address)
-	release_region(Controller->IO_Address, 0x80);
-  pci_disable_device(Controller->PCIDevice);
-  for (i = 0; (i < DAC960_MaxLogicalDrives) && Controller->disks[i]; i++)
-       put_disk(Controller->disks[i]);
-  DAC960_Controllers[Controller->ControllerNumber] = NULL;
-  kfree(Controller);
-}
-
-
-/*
-  DAC960_DetectController detects Mylex DAC960/AcceleRAID/eXtremeRAID
-  PCI RAID Controllers by interrogating the PCI Configuration Space for
-  Controller Type.
-*/
-
-static DAC960_Controller_T * 
-DAC960_DetectController(struct pci_dev *PCI_Device,
-			const struct pci_device_id *entry)
-{
-  struct DAC960_privdata *privdata =
-	  	(struct DAC960_privdata *)entry->driver_data;
-  irq_handler_t InterruptHandler = privdata->InterruptHandler;
-  unsigned int MemoryWindowSize = privdata->MemoryWindowSize;
-  DAC960_Controller_T *Controller = NULL;
-  unsigned char DeviceFunction = PCI_Device->devfn;
-  unsigned char ErrorStatus, Parameter0, Parameter1;
-  unsigned int IRQ_Channel;
-  void __iomem *BaseAddress;
-  int i;
-
-  Controller = kzalloc(sizeof(DAC960_Controller_T), GFP_ATOMIC);
-  if (Controller == NULL) {
-	DAC960_Error("Unable to allocate Controller structure for "
-                       "Controller at\n", NULL);
-	return NULL;
-  }
-  Controller->ControllerNumber = DAC960_ControllerCount;
-  DAC960_Controllers[DAC960_ControllerCount++] = Controller;
-  Controller->Bus = PCI_Device->bus->number;
-  Controller->FirmwareType = privdata->FirmwareType;
-  Controller->HardwareType = privdata->HardwareType;
-  Controller->Device = DeviceFunction >> 3;
-  Controller->Function = DeviceFunction & 0x7;
-  Controller->PCIDevice = PCI_Device;
-  strcpy(Controller->FullModelName, "DAC960");
-
-  if (pci_enable_device(PCI_Device))
-	goto Failure;
-
-  switch (Controller->HardwareType)
-  {
-	case DAC960_GEM_Controller:
-	  Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
-	  break;
-	case DAC960_BA_Controller:
-	  Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
-	  break;
-	case DAC960_LP_Controller:
-	  Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
-	  break;
-	case DAC960_LA_Controller:
-	  Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
-	  break;
-	case DAC960_PG_Controller:
-	  Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
-	  break;
-	case DAC960_PD_Controller:
-	  Controller->IO_Address = pci_resource_start(PCI_Device, 0);
-	  Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
-	  break;
-	case DAC960_P_Controller:
-	  Controller->IO_Address = pci_resource_start(PCI_Device, 0);
-	  Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
-	  break;
-  }
-
-  pci_set_drvdata(PCI_Device, (void *)((long)Controller->ControllerNumber));
-  for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
-	Controller->disks[i] = alloc_disk(1<<DAC960_MaxPartitionsBits);
-	if (!Controller->disks[i])
-		goto Failure;
-	Controller->disks[i]->private_data = (void *)((long)i);
-  }
-  init_waitqueue_head(&Controller->CommandWaitQueue);
-  init_waitqueue_head(&Controller->HealthStatusWaitQueue);
-  spin_lock_init(&Controller->queue_lock);
-  DAC960_AnnounceDriver(Controller);
-  /*
-    Map the Controller Register Window.
-  */
- if (MemoryWindowSize < PAGE_SIZE)
-	MemoryWindowSize = PAGE_SIZE;
-  Controller->MemoryMappedAddress =
-	ioremap_nocache(Controller->PCI_Address & PAGE_MASK, MemoryWindowSize);
-  Controller->BaseAddress =
-	Controller->MemoryMappedAddress + (Controller->PCI_Address & ~PAGE_MASK);
-  if (Controller->MemoryMappedAddress == NULL)
-  {
-	  DAC960_Error("Unable to map Controller Register Window for "
-		       "Controller at\n", Controller);
-	  goto Failure;
-  }
-  BaseAddress = Controller->BaseAddress;
-  switch (Controller->HardwareType)
-  {
-	case DAC960_GEM_Controller:
-	  DAC960_GEM_DisableInterrupts(BaseAddress);
-	  DAC960_GEM_AcknowledgeHardwareMailboxStatus(BaseAddress);
-	  udelay(1000);
-	  while (DAC960_GEM_InitializationInProgressP(BaseAddress))
-	    {
-	      if (DAC960_GEM_ReadErrorStatus(BaseAddress, &ErrorStatus,
-					    &Parameter0, &Parameter1) &&
-		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
-					   Parameter0, Parameter1))
-		goto Failure;
-	      udelay(10);
-	    }
-	  if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
-	    {
-	      DAC960_Error("Unable to Enable Memory Mailbox Interface "
-			   "for Controller at\n", Controller);
-	      goto Failure;
-	    }
-	  DAC960_GEM_EnableInterrupts(BaseAddress);
-	  Controller->QueueCommand = DAC960_GEM_QueueCommand;
-	  Controller->ReadControllerConfiguration =
-	    DAC960_V2_ReadControllerConfiguration;
-	  Controller->ReadDeviceConfiguration =
-	    DAC960_V2_ReadDeviceConfiguration;
-	  Controller->ReportDeviceConfiguration =
-	    DAC960_V2_ReportDeviceConfiguration;
-	  Controller->QueueReadWriteCommand =
-	    DAC960_V2_QueueReadWriteCommand;
-	  break;
-	case DAC960_BA_Controller:
-	  DAC960_BA_DisableInterrupts(BaseAddress);
-	  DAC960_BA_AcknowledgeHardwareMailboxStatus(BaseAddress);
-	  udelay(1000);
-	  while (DAC960_BA_InitializationInProgressP(BaseAddress))
-	    {
-	      if (DAC960_BA_ReadErrorStatus(BaseAddress, &ErrorStatus,
-					    &Parameter0, &Parameter1) &&
-		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
-					   Parameter0, Parameter1))
-		goto Failure;
-	      udelay(10);
-	    }
-	  if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
-	    {
-	      DAC960_Error("Unable to Enable Memory Mailbox Interface "
-			   "for Controller at\n", Controller);
-	      goto Failure;
-	    }
-	  DAC960_BA_EnableInterrupts(BaseAddress);
-	  Controller->QueueCommand = DAC960_BA_QueueCommand;
-	  Controller->ReadControllerConfiguration =
-	    DAC960_V2_ReadControllerConfiguration;
-	  Controller->ReadDeviceConfiguration =
-	    DAC960_V2_ReadDeviceConfiguration;
-	  Controller->ReportDeviceConfiguration =
-	    DAC960_V2_ReportDeviceConfiguration;
-	  Controller->QueueReadWriteCommand =
-	    DAC960_V2_QueueReadWriteCommand;
-	  break;
-	case DAC960_LP_Controller:
-	  DAC960_LP_DisableInterrupts(BaseAddress);
-	  DAC960_LP_AcknowledgeHardwareMailboxStatus(BaseAddress);
-	  udelay(1000);
-	  while (DAC960_LP_InitializationInProgressP(BaseAddress))
-	    {
-	      if (DAC960_LP_ReadErrorStatus(BaseAddress, &ErrorStatus,
-					    &Parameter0, &Parameter1) &&
-		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
-					   Parameter0, Parameter1))
-		goto Failure;
-	      udelay(10);
-	    }
-	  if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
-	    {
-	      DAC960_Error("Unable to Enable Memory Mailbox Interface "
-			   "for Controller at\n", Controller);
-	      goto Failure;
-	    }
-	  DAC960_LP_EnableInterrupts(BaseAddress);
-	  Controller->QueueCommand = DAC960_LP_QueueCommand;
-	  Controller->ReadControllerConfiguration =
-	    DAC960_V2_ReadControllerConfiguration;
-	  Controller->ReadDeviceConfiguration =
-	    DAC960_V2_ReadDeviceConfiguration;
-	  Controller->ReportDeviceConfiguration =
-	    DAC960_V2_ReportDeviceConfiguration;
-	  Controller->QueueReadWriteCommand =
-	    DAC960_V2_QueueReadWriteCommand;
-	  break;
-	case DAC960_LA_Controller:
-	  DAC960_LA_DisableInterrupts(BaseAddress);
-	  DAC960_LA_AcknowledgeHardwareMailboxStatus(BaseAddress);
-	  udelay(1000);
-	  while (DAC960_LA_InitializationInProgressP(BaseAddress))
-	    {
-	      if (DAC960_LA_ReadErrorStatus(BaseAddress, &ErrorStatus,
-					    &Parameter0, &Parameter1) &&
-		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
-					   Parameter0, Parameter1))
-		goto Failure;
-	      udelay(10);
-	    }
-	  if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
-	    {
-	      DAC960_Error("Unable to Enable Memory Mailbox Interface "
-			   "for Controller at\n", Controller);
-	      goto Failure;
-	    }
-	  DAC960_LA_EnableInterrupts(BaseAddress);
-	  if (Controller->V1.DualModeMemoryMailboxInterface)
-	    Controller->QueueCommand = DAC960_LA_QueueCommandDualMode;
-	  else Controller->QueueCommand = DAC960_LA_QueueCommandSingleMode;
-	  Controller->ReadControllerConfiguration =
-	    DAC960_V1_ReadControllerConfiguration;
-	  Controller->ReadDeviceConfiguration =
-	    DAC960_V1_ReadDeviceConfiguration;
-	  Controller->ReportDeviceConfiguration =
-	    DAC960_V1_ReportDeviceConfiguration;
-	  Controller->QueueReadWriteCommand =
-	    DAC960_V1_QueueReadWriteCommand;
-	  break;
-	case DAC960_PG_Controller:
-	  DAC960_PG_DisableInterrupts(BaseAddress);
-	  DAC960_PG_AcknowledgeHardwareMailboxStatus(BaseAddress);
-	  udelay(1000);
-	  while (DAC960_PG_InitializationInProgressP(BaseAddress))
-	    {
-	      if (DAC960_PG_ReadErrorStatus(BaseAddress, &ErrorStatus,
-					    &Parameter0, &Parameter1) &&
-		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
-					   Parameter0, Parameter1))
-		goto Failure;
-	      udelay(10);
-	    }
-	  if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
-	    {
-	      DAC960_Error("Unable to Enable Memory Mailbox Interface "
-			   "for Controller at\n", Controller);
-	      goto Failure;
-	    }
-	  DAC960_PG_EnableInterrupts(BaseAddress);
-	  if (Controller->V1.DualModeMemoryMailboxInterface)
-	    Controller->QueueCommand = DAC960_PG_QueueCommandDualMode;
-	  else Controller->QueueCommand = DAC960_PG_QueueCommandSingleMode;
-	  Controller->ReadControllerConfiguration =
-	    DAC960_V1_ReadControllerConfiguration;
-	  Controller->ReadDeviceConfiguration =
-	    DAC960_V1_ReadDeviceConfiguration;
-	  Controller->ReportDeviceConfiguration =
-	    DAC960_V1_ReportDeviceConfiguration;
-	  Controller->QueueReadWriteCommand =
-	    DAC960_V1_QueueReadWriteCommand;
-	  break;
-	case DAC960_PD_Controller:
-	  if (!request_region(Controller->IO_Address, 0x80,
-			      Controller->FullModelName)) {
-		DAC960_Error("IO port 0x%lx busy for Controller at\n",
-			     Controller, Controller->IO_Address);
-		goto Failure;
-	  }
-	  DAC960_PD_DisableInterrupts(BaseAddress);
-	  DAC960_PD_AcknowledgeStatus(BaseAddress);
-	  udelay(1000);
-	  while (DAC960_PD_InitializationInProgressP(BaseAddress))
-	    {
-	      if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
-					    &Parameter0, &Parameter1) &&
-		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
-					   Parameter0, Parameter1))
-		goto Failure;
-	      udelay(10);
-	    }
-	  if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
-	    {
-	      DAC960_Error("Unable to allocate DMA mapped memory "
-			   "for Controller at\n", Controller);
-	      goto Failure;
-	    }
-	  DAC960_PD_EnableInterrupts(BaseAddress);
-	  Controller->QueueCommand = DAC960_PD_QueueCommand;
-	  Controller->ReadControllerConfiguration =
-	    DAC960_V1_ReadControllerConfiguration;
-	  Controller->ReadDeviceConfiguration =
-	    DAC960_V1_ReadDeviceConfiguration;
-	  Controller->ReportDeviceConfiguration =
-	    DAC960_V1_ReportDeviceConfiguration;
-	  Controller->QueueReadWriteCommand =
-	    DAC960_V1_QueueReadWriteCommand;
-	  break;
-	case DAC960_P_Controller:
-	  if (!request_region(Controller->IO_Address, 0x80,
-			      Controller->FullModelName)){
-		DAC960_Error("IO port 0x%lx busy for Controller at\n",
-		   	     Controller, Controller->IO_Address);
-		goto Failure;
-	  }
-	  DAC960_PD_DisableInterrupts(BaseAddress);
-	  DAC960_PD_AcknowledgeStatus(BaseAddress);
-	  udelay(1000);
-	  while (DAC960_PD_InitializationInProgressP(BaseAddress))
-	    {
-	      if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
-					    &Parameter0, &Parameter1) &&
-		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
-					   Parameter0, Parameter1))
-		goto Failure;
-	      udelay(10);
-	    }
-	  if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
-	    {
-	      DAC960_Error("Unable to allocate DMA mapped memory"
-			   "for Controller at\n", Controller);
-	      goto Failure;
-	    }
-	  DAC960_PD_EnableInterrupts(BaseAddress);
-	  Controller->QueueCommand = DAC960_P_QueueCommand;
-	  Controller->ReadControllerConfiguration =
-	    DAC960_V1_ReadControllerConfiguration;
-	  Controller->ReadDeviceConfiguration =
-	    DAC960_V1_ReadDeviceConfiguration;
-	  Controller->ReportDeviceConfiguration =
-	    DAC960_V1_ReportDeviceConfiguration;
-	  Controller->QueueReadWriteCommand =
-	    DAC960_V1_QueueReadWriteCommand;
-	  break;
-  }
-  /*
-     Acquire shared access to the IRQ Channel.
-  */
-  IRQ_Channel = PCI_Device->irq;
-  if (request_irq(IRQ_Channel, InterruptHandler, IRQF_SHARED,
-		      Controller->FullModelName, Controller) < 0)
-  {
-	DAC960_Error("Unable to acquire IRQ Channel %d for Controller at\n",
-		       Controller, Controller->IRQ_Channel);
-	goto Failure;
-  }
-  Controller->IRQ_Channel = IRQ_Channel;
-  Controller->InitialCommand.CommandIdentifier = 1;
-  Controller->InitialCommand.Controller = Controller;
-  Controller->Commands[0] = &Controller->InitialCommand;
-  Controller->FreeCommands = &Controller->InitialCommand;
-  return Controller;
-      
-Failure:
-  if (Controller->IO_Address == 0)
-	DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
-		     "PCI Address 0x%X\n", Controller,
-		     Controller->Bus, Controller->Device,
-		     Controller->Function, Controller->PCI_Address);
-  else
-	DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
-			"0x%X PCI Address 0x%X\n", Controller,
-			Controller->Bus, Controller->Device,
-			Controller->Function, Controller->IO_Address,
-			Controller->PCI_Address);
-  DAC960_DetectCleanup(Controller);
-  DAC960_ControllerCount--;
-  return NULL;
-}
-
-/*
-  DAC960_InitializeController initializes Controller.
-*/
-
-static bool 
-DAC960_InitializeController(DAC960_Controller_T *Controller)
-{
-  if (DAC960_ReadControllerConfiguration(Controller) &&
-      DAC960_ReportControllerConfiguration(Controller) &&
-      DAC960_CreateAuxiliaryStructures(Controller) &&
-      DAC960_ReadDeviceConfiguration(Controller) &&
-      DAC960_ReportDeviceConfiguration(Controller) &&
-      DAC960_RegisterBlockDevice(Controller))
-    {
-      /*
-	Initialize the Monitoring Timer.
-      */
-      timer_setup(&Controller->MonitoringTimer,
-                  DAC960_MonitoringTimerFunction, 0);
-      Controller->MonitoringTimer.expires =
-	jiffies + DAC960_MonitoringTimerInterval;
-      add_timer(&Controller->MonitoringTimer);
-      Controller->ControllerInitialized = true;
-      return true;
-    }
-  return false;
-}
-
-
-/*
-  DAC960_FinalizeController finalizes Controller.
-*/
-
-static void DAC960_FinalizeController(DAC960_Controller_T *Controller)
-{
-  if (Controller->ControllerInitialized)
-    {
-      unsigned long flags;
-
-      /*
-       * Acquiring and releasing lock here eliminates
-       * a very low probability race.
-       *
-       * The code below allocates controller command structures
-       * from the free list without holding the controller lock.
-       * This is safe assuming there is no other activity on
-       * the controller at the time.
-       * 
-       * But, there might be a monitoring command still
-       * in progress.  Setting the Shutdown flag while holding
-       * the lock ensures that there is no monitoring command
-       * in the interrupt handler currently, and any monitoring
-       * commands that complete from this time on will NOT return
-       * their command structure to the free list.
-       */
-
-      spin_lock_irqsave(&Controller->queue_lock, flags);
-      Controller->ShutdownMonitoringTimer = 1;
-      spin_unlock_irqrestore(&Controller->queue_lock, flags);
-
-      del_timer_sync(&Controller->MonitoringTimer);
-      if (Controller->FirmwareType == DAC960_V1_Controller)
-	{
-	  DAC960_Notice("Flushing Cache...", Controller);
-	  DAC960_V1_ExecuteType3(Controller, DAC960_V1_Flush, 0);
-	  DAC960_Notice("done\n", Controller);
-
-	  if (Controller->HardwareType == DAC960_PD_Controller)
-	      release_region(Controller->IO_Address, 0x80);
-	}
-      else
-	{
-	  DAC960_Notice("Flushing Cache...", Controller);
-	  DAC960_V2_DeviceOperation(Controller, DAC960_V2_PauseDevice,
-				    DAC960_V2_RAID_Controller);
-	  DAC960_Notice("done\n", Controller);
-	}
-    }
-  DAC960_UnregisterBlockDevice(Controller);
-  DAC960_DestroyAuxiliaryStructures(Controller);
-  DAC960_DestroyProcEntries(Controller);
-  DAC960_DetectCleanup(Controller);
-}
-
-
-/*
-  DAC960_Probe verifies controller's existence and
-  initializes the DAC960 Driver for that controller.
-*/
-
-static int 
-DAC960_Probe(struct pci_dev *dev, const struct pci_device_id *entry)
-{
-  int disk;
-  DAC960_Controller_T *Controller;
-
-  if (DAC960_ControllerCount == DAC960_MaxControllers)
-  {
-	DAC960_Error("More than %d DAC960 Controllers detected - "
-                       "ignoring from Controller at\n",
-                       NULL, DAC960_MaxControllers);
-	return -ENODEV;
-  }
-
-  Controller = DAC960_DetectController(dev, entry);
-  if (!Controller)
-	return -ENODEV;
-
-  if (!DAC960_InitializeController(Controller)) {
-  	DAC960_FinalizeController(Controller);
-	return -ENODEV;
-  }
-
-  for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
-        set_capacity(Controller->disks[disk], disk_size(Controller, disk));
-        add_disk(Controller->disks[disk]);
-  }
-  DAC960_CreateProcEntries(Controller);
-  return 0;
-}
-
-
-/*
-  DAC960_Finalize finalizes the DAC960 Driver.
-*/
-
-static void DAC960_Remove(struct pci_dev *PCI_Device)
-{
-  int Controller_Number = (long)pci_get_drvdata(PCI_Device);
-  DAC960_Controller_T *Controller = DAC960_Controllers[Controller_Number];
-  if (Controller != NULL)
-      DAC960_FinalizeController(Controller);
-}
-
-
-/*
-  DAC960_V1_QueueReadWriteCommand prepares and queues a Read/Write Command for
-  DAC960 V1 Firmware Controllers.
-*/
-
-static void DAC960_V1_QueueReadWriteCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  DAC960_V1_ScatterGatherSegment_T *ScatterGatherList =
-					Command->V1.ScatterGatherList;
-  struct scatterlist *ScatterList = Command->V1.ScatterList;
-
-  DAC960_V1_ClearCommand(Command);
-
-  if (Command->SegmentCount == 1)
-    {
-      if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
-	CommandMailbox->Type5.CommandOpcode = DAC960_V1_Read;
-      else 
-        CommandMailbox->Type5.CommandOpcode = DAC960_V1_Write;
-
-      CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
-      CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
-      CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
-      CommandMailbox->Type5.BusAddress =
-			(DAC960_BusAddress32_T)sg_dma_address(ScatterList);	
-    }
-  else
-    {
-      int i;
-
-      if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
-	CommandMailbox->Type5.CommandOpcode = DAC960_V1_ReadWithScatterGather;
-      else
-	CommandMailbox->Type5.CommandOpcode = DAC960_V1_WriteWithScatterGather;
-
-      CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
-      CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
-      CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
-      CommandMailbox->Type5.BusAddress = Command->V1.ScatterGatherListDMA;
-
-      CommandMailbox->Type5.ScatterGatherCount = Command->SegmentCount;
-
-      for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
-		ScatterGatherList->SegmentDataPointer =
-			(DAC960_BusAddress32_T)sg_dma_address(ScatterList);
-		ScatterGatherList->SegmentByteCount =
-			(DAC960_ByteCount32_T)sg_dma_len(ScatterList);
-      }
-    }
-  DAC960_QueueCommand(Command);
-}
-
-
-/*
-  DAC960_V2_QueueReadWriteCommand prepares and queues a Read/Write Command for
-  DAC960 V2 Firmware Controllers.
-*/
-
-static void DAC960_V2_QueueReadWriteCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  struct scatterlist *ScatterList = Command->V2.ScatterList;
-
-  DAC960_V2_ClearCommand(Command);
-
-  CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10;
-  CommandMailbox->SCSI_10.CommandControlBits.DataTransferControllerToHost =
-    (Command->DmaDirection == PCI_DMA_FROMDEVICE);
-  CommandMailbox->SCSI_10.DataTransferSize =
-    Command->BlockCount << DAC960_BlockSizeBits;
-  CommandMailbox->SCSI_10.RequestSenseBusAddress = Command->V2.RequestSenseDMA;
-  CommandMailbox->SCSI_10.PhysicalDevice =
-    Controller->V2.LogicalDriveToVirtualDevice[Command->LogicalDriveNumber];
-  CommandMailbox->SCSI_10.RequestSenseSize = sizeof(DAC960_SCSI_RequestSense_T);
-  CommandMailbox->SCSI_10.CDBLength = 10;
-  CommandMailbox->SCSI_10.SCSI_CDB[0] =
-    (Command->DmaDirection == PCI_DMA_FROMDEVICE ? 0x28 : 0x2A);
-  CommandMailbox->SCSI_10.SCSI_CDB[2] = Command->BlockNumber >> 24;
-  CommandMailbox->SCSI_10.SCSI_CDB[3] = Command->BlockNumber >> 16;
-  CommandMailbox->SCSI_10.SCSI_CDB[4] = Command->BlockNumber >> 8;
-  CommandMailbox->SCSI_10.SCSI_CDB[5] = Command->BlockNumber;
-  CommandMailbox->SCSI_10.SCSI_CDB[7] = Command->BlockCount >> 8;
-  CommandMailbox->SCSI_10.SCSI_CDB[8] = Command->BlockCount;
-
-  if (Command->SegmentCount == 1)
-    {
-      CommandMailbox->SCSI_10.DataTransferMemoryAddress
-			     .ScatterGatherSegments[0]
-			     .SegmentDataPointer =
-	(DAC960_BusAddress64_T)sg_dma_address(ScatterList);
-      CommandMailbox->SCSI_10.DataTransferMemoryAddress
-			     .ScatterGatherSegments[0]
-			     .SegmentByteCount =
-	CommandMailbox->SCSI_10.DataTransferSize;
-    }
-  else
-    {
-      DAC960_V2_ScatterGatherSegment_T *ScatterGatherList;
-      int i;
-
-      if (Command->SegmentCount > 2)
-	{
-          ScatterGatherList = Command->V2.ScatterGatherList;
-	  CommandMailbox->SCSI_10.CommandControlBits
-			 .AdditionalScatterGatherListMemory = true;
-	  CommandMailbox->SCSI_10.DataTransferMemoryAddress
-		.ExtendedScatterGather.ScatterGatherList0Length = Command->SegmentCount;
-	  CommandMailbox->SCSI_10.DataTransferMemoryAddress
-			 .ExtendedScatterGather.ScatterGatherList0Address =
-	    Command->V2.ScatterGatherListDMA;
-	}
-      else
-	ScatterGatherList = CommandMailbox->SCSI_10.DataTransferMemoryAddress
-				 .ScatterGatherSegments;
-
-      for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
-		ScatterGatherList->SegmentDataPointer =
-			(DAC960_BusAddress64_T)sg_dma_address(ScatterList);
-		ScatterGatherList->SegmentByteCount =
-			(DAC960_ByteCount64_T)sg_dma_len(ScatterList);
-      }
-    }
-  DAC960_QueueCommand(Command);
-}
-
-
-static int DAC960_process_queue(DAC960_Controller_T *Controller, struct request_queue *req_q)
-{
-	struct request *Request;
-	DAC960_Command_T *Command;
-
-   while(1) {
-	Request = blk_peek_request(req_q);
-	if (!Request)
-		return 1;
-
-	Command = DAC960_AllocateCommand(Controller);
-	if (Command == NULL)
-		return 0;
-
-	if (rq_data_dir(Request) == READ) {
-		Command->DmaDirection = PCI_DMA_FROMDEVICE;
-		Command->CommandType = DAC960_ReadCommand;
-	} else {
-		Command->DmaDirection = PCI_DMA_TODEVICE;
-		Command->CommandType = DAC960_WriteCommand;
-	}
-	Command->Completion = Request->end_io_data;
-	Command->LogicalDriveNumber = (long)Request->rq_disk->private_data;
-	Command->BlockNumber = blk_rq_pos(Request);
-	Command->BlockCount = blk_rq_sectors(Request);
-	Command->Request = Request;
-	blk_start_request(Request);
-	Command->SegmentCount = blk_rq_map_sg(req_q,
-		  Command->Request, Command->cmd_sglist);
-	/* pci_map_sg MAY change the value of SegCount */
-	Command->SegmentCount = pci_map_sg(Controller->PCIDevice, Command->cmd_sglist,
-		 Command->SegmentCount, Command->DmaDirection);
-
-	DAC960_QueueReadWriteCommand(Command);
-  }
-}
-
-/*
-  DAC960_ProcessRequest attempts to remove one I/O Request from Controller's
-  I/O Request Queue and queues it to the Controller.  WaitForCommand is true if
-  this function should wait for a Command to become available if necessary.
-  This function returns true if an I/O Request was queued and false otherwise.
-*/
-static void DAC960_ProcessRequest(DAC960_Controller_T *controller)
-{
-	int i;
-
-	if (!controller->ControllerInitialized)
-		return;
-
-	/* Do this better later! */
-	for (i = controller->req_q_index; i < DAC960_MaxLogicalDrives; i++) {
-		struct request_queue *req_q = controller->RequestQueue[i];
-
-		if (req_q == NULL)
-			continue;
-
-		if (!DAC960_process_queue(controller, req_q)) {
-			controller->req_q_index = i;
-			return;
-		}
-	}
-
-	if (controller->req_q_index == 0)
-		return;
-
-	for (i = 0; i < controller->req_q_index; i++) {
-		struct request_queue *req_q = controller->RequestQueue[i];
-
-		if (req_q == NULL)
-			continue;
-
-		if (!DAC960_process_queue(controller, req_q)) {
-			controller->req_q_index = i;
-			return;
-		}
-	}
-}
-
-
-/*
-  DAC960_queue_partial_rw extracts one bio from the request already
-  associated with argument command, and construct a new command block to retry I/O
-  only on that bio.  Queue that command to the controller.
-
-  This function re-uses a previously-allocated Command,
-  	there is no failure mode from trying to allocate a command.
-*/
-
-static void DAC960_queue_partial_rw(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  struct request *Request = Command->Request;
-  struct request_queue *req_q = Controller->RequestQueue[Command->LogicalDriveNumber];
-
-  if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
-    Command->CommandType = DAC960_ReadRetryCommand;
-  else
-    Command->CommandType = DAC960_WriteRetryCommand;
-
-  /*
-   * We could be more efficient with these mapping requests
-   * and map only the portions that we need.  But since this
-   * code should almost never be called, just go with a
-   * simple coding.
-   */
-  (void)blk_rq_map_sg(req_q, Command->Request, Command->cmd_sglist);
-
-  (void)pci_map_sg(Controller->PCIDevice, Command->cmd_sglist, 1, Command->DmaDirection);
-  /*
-   * Resubmitting the request sector at a time is really tedious.
-   * But, this should almost never happen.  So, we're willing to pay
-   * this price so that in the end, as much of the transfer is completed
-   * successfully as possible.
-   */
-  Command->SegmentCount = 1;
-  Command->BlockNumber = blk_rq_pos(Request);
-  Command->BlockCount = 1;
-  DAC960_QueueReadWriteCommand(Command);
-  return;
-}
-
-/*
-  DAC960_RequestFunction is the I/O Request Function for DAC960 Controllers.
-*/
-
-static void DAC960_RequestFunction(struct request_queue *RequestQueue)
-{
-	DAC960_ProcessRequest(RequestQueue->queuedata);
-}
-
-/*
-  DAC960_ProcessCompletedBuffer performs completion processing for an
-  individual Buffer.
-*/
-
-static inline bool DAC960_ProcessCompletedRequest(DAC960_Command_T *Command,
-						 bool SuccessfulIO)
-{
-	struct request *Request = Command->Request;
-	blk_status_t Error = SuccessfulIO ? BLK_STS_OK : BLK_STS_IOERR;
-
-	pci_unmap_sg(Command->Controller->PCIDevice, Command->cmd_sglist,
-		Command->SegmentCount, Command->DmaDirection);
-
-	 if (!__blk_end_request(Request, Error, Command->BlockCount << 9)) {
-		if (Command->Completion) {
-			complete(Command->Completion);
-			Command->Completion = NULL;
-		}
-		return true;
-	}
-	return false;
-}
-
-/*
-  DAC960_V1_ReadWriteError prints an appropriate error message for Command
-  when an error occurs on a Read or Write operation.
-*/
-
-static void DAC960_V1_ReadWriteError(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  unsigned char *CommandName = "UNKNOWN";
-  switch (Command->CommandType)
-    {
-    case DAC960_ReadCommand:
-    case DAC960_ReadRetryCommand:
-      CommandName = "READ";
-      break;
-    case DAC960_WriteCommand:
-    case DAC960_WriteRetryCommand:
-      CommandName = "WRITE";
-      break;
-    case DAC960_MonitoringCommand:
-    case DAC960_ImmediateCommand:
-    case DAC960_QueuedCommand:
-      break;
-    }
-  switch (Command->V1.CommandStatus)
-    {
-    case DAC960_V1_IrrecoverableDataError:
-      DAC960_Error("Irrecoverable Data Error on %s:\n",
-		   Controller, CommandName);
-      break;
-    case DAC960_V1_LogicalDriveNonexistentOrOffline:
-      DAC960_Error("Logical Drive Nonexistent or Offline on %s:\n",
-		   Controller, CommandName);
-      break;
-    case DAC960_V1_AccessBeyondEndOfLogicalDrive:
-      DAC960_Error("Attempt to Access Beyond End of Logical Drive "
-		   "on %s:\n", Controller, CommandName);
-      break;
-    case DAC960_V1_BadDataEncountered:
-      DAC960_Error("Bad Data Encountered on %s:\n", Controller, CommandName);
-      break;
-    default:
-      DAC960_Error("Unexpected Error Status %04X on %s:\n",
-		   Controller, Command->V1.CommandStatus, CommandName);
-      break;
-    }
-  DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
-	       Controller, Controller->ControllerNumber,
-	       Command->LogicalDriveNumber, Command->BlockNumber,
-	       Command->BlockNumber + Command->BlockCount - 1);
-}
-
-
-/*
-  DAC960_V1_ProcessCompletedCommand performs completion processing for Command
-  for DAC960 V1 Firmware Controllers.
-*/
-
-static void DAC960_V1_ProcessCompletedCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  DAC960_CommandType_T CommandType = Command->CommandType;
-  DAC960_V1_CommandOpcode_T CommandOpcode =
-    Command->V1.CommandMailbox.Common.CommandOpcode;
-  DAC960_V1_CommandStatus_T CommandStatus = Command->V1.CommandStatus;
-
-  if (CommandType == DAC960_ReadCommand ||
-      CommandType == DAC960_WriteCommand)
-    {
-
-#ifdef FORCE_RETRY_DEBUG
-      CommandStatus = DAC960_V1_IrrecoverableDataError;
-#endif
-
-      if (CommandStatus == DAC960_V1_NormalCompletion) {
-
-		if (!DAC960_ProcessCompletedRequest(Command, true))
-			BUG();
-
-      } else if (CommandStatus == DAC960_V1_IrrecoverableDataError ||
-		CommandStatus == DAC960_V1_BadDataEncountered)
-	{
-	  /*
-	   * break the command down into pieces and resubmit each
-	   * piece, hoping that some of them will succeed.
-	   */
-	   DAC960_queue_partial_rw(Command);
-	   return;
-	}
-      else
-	{
-	  if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
-	    DAC960_V1_ReadWriteError(Command);
-
-	 if (!DAC960_ProcessCompletedRequest(Command, false))
-		BUG();
-	}
-    }
-  else if (CommandType == DAC960_ReadRetryCommand ||
-	   CommandType == DAC960_WriteRetryCommand)
-    {
-      bool normal_completion;
-#ifdef FORCE_RETRY_FAILURE_DEBUG
-      static int retry_count = 1;
-#endif
-      /*
-        Perform completion processing for the portion that was
-        retried, and submit the next portion, if any.
-      */
-      normal_completion = true;
-      if (CommandStatus != DAC960_V1_NormalCompletion) {
-        normal_completion = false;
-        if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
-            DAC960_V1_ReadWriteError(Command);
-      }
-
-#ifdef FORCE_RETRY_FAILURE_DEBUG
-      if (!(++retry_count % 10000)) {
-	      printk("V1 error retry failure test\n");
-	      normal_completion = false;
-              DAC960_V1_ReadWriteError(Command);
-      }
-#endif
-
-      if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
-        DAC960_queue_partial_rw(Command);
-        return;
-      }
-    }
-
-  else if (CommandType == DAC960_MonitoringCommand)
-    {
-      if (Controller->ShutdownMonitoringTimer)
-	      return;
-      if (CommandOpcode == DAC960_V1_Enquiry)
-	{
-	  DAC960_V1_Enquiry_T *OldEnquiry = &Controller->V1.Enquiry;
-	  DAC960_V1_Enquiry_T *NewEnquiry = Controller->V1.NewEnquiry;
-	  unsigned int OldCriticalLogicalDriveCount =
-	    OldEnquiry->CriticalLogicalDriveCount;
-	  unsigned int NewCriticalLogicalDriveCount =
-	    NewEnquiry->CriticalLogicalDriveCount;
-	  if (NewEnquiry->NumberOfLogicalDrives > Controller->LogicalDriveCount)
-	    {
-	      int LogicalDriveNumber = Controller->LogicalDriveCount - 1;
-	      while (++LogicalDriveNumber < NewEnquiry->NumberOfLogicalDrives)
-		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
-				"Now Exists\n", Controller,
-				LogicalDriveNumber,
-				Controller->ControllerNumber,
-				LogicalDriveNumber);
-	      Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
-	      DAC960_ComputeGenericDiskInfo(Controller);
-	    }
-	  if (NewEnquiry->NumberOfLogicalDrives < Controller->LogicalDriveCount)
-	    {
-	      int LogicalDriveNumber = NewEnquiry->NumberOfLogicalDrives - 1;
-	      while (++LogicalDriveNumber < Controller->LogicalDriveCount)
-		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
-				"No Longer Exists\n", Controller,
-				LogicalDriveNumber,
-				Controller->ControllerNumber,
-				LogicalDriveNumber);
-	      Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
-	      DAC960_ComputeGenericDiskInfo(Controller);
-	    }
-	  if (NewEnquiry->StatusFlags.DeferredWriteError !=
-	      OldEnquiry->StatusFlags.DeferredWriteError)
-	    DAC960_Critical("Deferred Write Error Flag is now %s\n", Controller,
-			    (NewEnquiry->StatusFlags.DeferredWriteError
-			     ? "TRUE" : "FALSE"));
-	  if ((NewCriticalLogicalDriveCount > 0 ||
-	       NewCriticalLogicalDriveCount != OldCriticalLogicalDriveCount) ||
-	      (NewEnquiry->OfflineLogicalDriveCount > 0 ||
-	       NewEnquiry->OfflineLogicalDriveCount !=
-	       OldEnquiry->OfflineLogicalDriveCount) ||
-	      (NewEnquiry->DeadDriveCount > 0 ||
-	       NewEnquiry->DeadDriveCount !=
-	       OldEnquiry->DeadDriveCount) ||
-	      (NewEnquiry->EventLogSequenceNumber !=
-	       OldEnquiry->EventLogSequenceNumber) ||
-	      Controller->MonitoringTimerCount == 0 ||
-	      time_after_eq(jiffies, Controller->SecondaryMonitoringTime
-	       + DAC960_SecondaryMonitoringInterval))
-	    {
-	      Controller->V1.NeedLogicalDriveInformation = true;
-	      Controller->V1.NewEventLogSequenceNumber =
-		NewEnquiry->EventLogSequenceNumber;
-	      Controller->V1.NeedErrorTableInformation = true;
-	      Controller->V1.NeedDeviceStateInformation = true;
-	      Controller->V1.StartDeviceStateScan = true;
-	      Controller->V1.NeedBackgroundInitializationStatus =
-		Controller->V1.BackgroundInitializationStatusSupported;
-	      Controller->SecondaryMonitoringTime = jiffies;
-	    }
-	  if (NewEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
-	      NewEnquiry->RebuildFlag
-	      == DAC960_V1_BackgroundRebuildInProgress ||
-	      OldEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
-	      OldEnquiry->RebuildFlag == DAC960_V1_BackgroundRebuildInProgress)
-	    {
-	      Controller->V1.NeedRebuildProgress = true;
-	      Controller->V1.RebuildProgressFirst =
-		(NewEnquiry->CriticalLogicalDriveCount <
-		 OldEnquiry->CriticalLogicalDriveCount);
-	    }
-	  if (OldEnquiry->RebuildFlag == DAC960_V1_BackgroundCheckInProgress)
-	    switch (NewEnquiry->RebuildFlag)
-	      {
-	      case DAC960_V1_NoStandbyRebuildOrCheckInProgress:
-		DAC960_Progress("Consistency Check Completed Successfully\n",
-				Controller);
-		break;
-	      case DAC960_V1_StandbyRebuildInProgress:
-	      case DAC960_V1_BackgroundRebuildInProgress:
-		break;
-	      case DAC960_V1_BackgroundCheckInProgress:
-		Controller->V1.NeedConsistencyCheckProgress = true;
-		break;
-	      case DAC960_V1_StandbyRebuildCompletedWithError:
-		DAC960_Progress("Consistency Check Completed with Error\n",
-				Controller);
-		break;
-	      case DAC960_V1_BackgroundRebuildOrCheckFailed_DriveFailed:
-		DAC960_Progress("Consistency Check Failed - "
-				"Physical Device Failed\n", Controller);
-		break;
-	      case DAC960_V1_BackgroundRebuildOrCheckFailed_LogicalDriveFailed:
-		DAC960_Progress("Consistency Check Failed - "
-				"Logical Drive Failed\n", Controller);
-		break;
-	      case DAC960_V1_BackgroundRebuildOrCheckFailed_OtherCauses:
-		DAC960_Progress("Consistency Check Failed - Other Causes\n",
-				Controller);
-		break;
-	      case DAC960_V1_BackgroundRebuildOrCheckSuccessfullyTerminated:
-		DAC960_Progress("Consistency Check Successfully Terminated\n",
-				Controller);
-		break;
-	      }
-	  else if (NewEnquiry->RebuildFlag
-		   == DAC960_V1_BackgroundCheckInProgress)
-	    Controller->V1.NeedConsistencyCheckProgress = true;
-	  Controller->MonitoringAlertMode =
-	    (NewEnquiry->CriticalLogicalDriveCount > 0 ||
-	     NewEnquiry->OfflineLogicalDriveCount > 0 ||
-	     NewEnquiry->DeadDriveCount > 0);
-	  if (NewEnquiry->RebuildFlag > DAC960_V1_BackgroundCheckInProgress)
-	    {
-	      Controller->V1.PendingRebuildFlag = NewEnquiry->RebuildFlag;
-	      Controller->V1.RebuildFlagPending = true;
-	    }
-	  memcpy(&Controller->V1.Enquiry, &Controller->V1.NewEnquiry,
-		 sizeof(DAC960_V1_Enquiry_T));
-	}
-      else if (CommandOpcode == DAC960_V1_PerformEventLogOperation)
-	{
-	  static char
-	    *DAC960_EventMessages[] =
-	       { "killed because write recovery failed",
-		 "killed because of SCSI bus reset failure",
-		 "killed because of double check condition",
-		 "killed because it was removed",
-		 "killed because of gross error on SCSI chip",
-		 "killed because of bad tag returned from drive",
-		 "killed because of timeout on SCSI command",
-		 "killed because of reset SCSI command issued from system",
-		 "killed because busy or parity error count exceeded limit",
-		 "killed because of 'kill drive' command from system",
-		 "killed because of selection timeout",
-		 "killed due to SCSI phase sequence error",
-		 "killed due to unknown status" };
-	  DAC960_V1_EventLogEntry_T *EventLogEntry =
-	    	Controller->V1.EventLogEntry;
-	  if (EventLogEntry->SequenceNumber ==
-	      Controller->V1.OldEventLogSequenceNumber)
-	    {
-	      unsigned char SenseKey = EventLogEntry->SenseKey;
-	      unsigned char AdditionalSenseCode =
-		EventLogEntry->AdditionalSenseCode;
-	      unsigned char AdditionalSenseCodeQualifier =
-		EventLogEntry->AdditionalSenseCodeQualifier;
-	      if (SenseKey == DAC960_SenseKey_VendorSpecific &&
-		  AdditionalSenseCode == 0x80 &&
-		  AdditionalSenseCodeQualifier <
-		  ARRAY_SIZE(DAC960_EventMessages))
-		DAC960_Critical("Physical Device %d:%d %s\n", Controller,
-				EventLogEntry->Channel,
-				EventLogEntry->TargetID,
-				DAC960_EventMessages[
-				  AdditionalSenseCodeQualifier]);
-	      else if (SenseKey == DAC960_SenseKey_UnitAttention &&
-		       AdditionalSenseCode == 0x29)
-		{
-		  if (Controller->MonitoringTimerCount > 0)
-		    Controller->V1.DeviceResetCount[EventLogEntry->Channel]
-						   [EventLogEntry->TargetID]++;
-		}
-	      else if (!(SenseKey == DAC960_SenseKey_NoSense ||
-			 (SenseKey == DAC960_SenseKey_NotReady &&
-			  AdditionalSenseCode == 0x04 &&
-			  (AdditionalSenseCodeQualifier == 0x01 ||
-			   AdditionalSenseCodeQualifier == 0x02))))
-		{
-		  DAC960_Critical("Physical Device %d:%d Error Log: "
-				  "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
-				  Controller,
-				  EventLogEntry->Channel,
-				  EventLogEntry->TargetID,
-				  SenseKey,
-				  AdditionalSenseCode,
-				  AdditionalSenseCodeQualifier);
-		  DAC960_Critical("Physical Device %d:%d Error Log: "
-				  "Information = %02X%02X%02X%02X "
-				  "%02X%02X%02X%02X\n",
-				  Controller,
-				  EventLogEntry->Channel,
-				  EventLogEntry->TargetID,
-				  EventLogEntry->Information[0],
-				  EventLogEntry->Information[1],
-				  EventLogEntry->Information[2],
-				  EventLogEntry->Information[3],
-				  EventLogEntry->CommandSpecificInformation[0],
-				  EventLogEntry->CommandSpecificInformation[1],
-				  EventLogEntry->CommandSpecificInformation[2],
-				  EventLogEntry->CommandSpecificInformation[3]);
-		}
-	    }
-	  Controller->V1.OldEventLogSequenceNumber++;
-	}
-      else if (CommandOpcode == DAC960_V1_GetErrorTable)
-	{
-	  DAC960_V1_ErrorTable_T *OldErrorTable = &Controller->V1.ErrorTable;
-	  DAC960_V1_ErrorTable_T *NewErrorTable = Controller->V1.NewErrorTable;
-	  int Channel, TargetID;
-	  for (Channel = 0; Channel < Controller->Channels; Channel++)
-	    for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
-	      {
-		DAC960_V1_ErrorTableEntry_T *NewErrorEntry =
-		  &NewErrorTable->ErrorTableEntries[Channel][TargetID];
-		DAC960_V1_ErrorTableEntry_T *OldErrorEntry =
-		  &OldErrorTable->ErrorTableEntries[Channel][TargetID];
-		if ((NewErrorEntry->ParityErrorCount !=
-		     OldErrorEntry->ParityErrorCount) ||
-		    (NewErrorEntry->SoftErrorCount !=
-		     OldErrorEntry->SoftErrorCount) ||
-		    (NewErrorEntry->HardErrorCount !=
-		     OldErrorEntry->HardErrorCount) ||
-		    (NewErrorEntry->MiscErrorCount !=
-		     OldErrorEntry->MiscErrorCount))
-		  DAC960_Critical("Physical Device %d:%d Errors: "
-				  "Parity = %d, Soft = %d, "
-				  "Hard = %d, Misc = %d\n",
-				  Controller, Channel, TargetID,
-				  NewErrorEntry->ParityErrorCount,
-				  NewErrorEntry->SoftErrorCount,
-				  NewErrorEntry->HardErrorCount,
-				  NewErrorEntry->MiscErrorCount);
-	      }
-	  memcpy(&Controller->V1.ErrorTable, Controller->V1.NewErrorTable,
-		 sizeof(DAC960_V1_ErrorTable_T));
-	}
-      else if (CommandOpcode == DAC960_V1_GetDeviceState)
-	{
-	  DAC960_V1_DeviceState_T *OldDeviceState =
-	    &Controller->V1.DeviceState[Controller->V1.DeviceStateChannel]
-				       [Controller->V1.DeviceStateTargetID];
-	  DAC960_V1_DeviceState_T *NewDeviceState =
-	    Controller->V1.NewDeviceState;
-	  if (NewDeviceState->DeviceState != OldDeviceState->DeviceState)
-	    DAC960_Critical("Physical Device %d:%d is now %s\n", Controller,
-			    Controller->V1.DeviceStateChannel,
-			    Controller->V1.DeviceStateTargetID,
-			    (NewDeviceState->DeviceState
-			     == DAC960_V1_Device_Dead
-			     ? "DEAD"
-			     : NewDeviceState->DeviceState
-			       == DAC960_V1_Device_WriteOnly
-			       ? "WRITE-ONLY"
-			       : NewDeviceState->DeviceState
-				 == DAC960_V1_Device_Online
-				 ? "ONLINE" : "STANDBY"));
-	  if (OldDeviceState->DeviceState == DAC960_V1_Device_Dead &&
-	      NewDeviceState->DeviceState != DAC960_V1_Device_Dead)
-	    {
-	      Controller->V1.NeedDeviceInquiryInformation = true;
-	      Controller->V1.NeedDeviceSerialNumberInformation = true;
-	      Controller->V1.DeviceResetCount
-			     [Controller->V1.DeviceStateChannel]
-			     [Controller->V1.DeviceStateTargetID] = 0;
-	    }
-	  memcpy(OldDeviceState, NewDeviceState,
-		 sizeof(DAC960_V1_DeviceState_T));
-	}
-      else if (CommandOpcode == DAC960_V1_GetLogicalDriveInformation)
-	{
-	  int LogicalDriveNumber;
-	  for (LogicalDriveNumber = 0;
-	       LogicalDriveNumber < Controller->LogicalDriveCount;
-	       LogicalDriveNumber++)
-	    {
-	      DAC960_V1_LogicalDriveInformation_T *OldLogicalDriveInformation =
-		&Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
-	      DAC960_V1_LogicalDriveInformation_T *NewLogicalDriveInformation =
-		&(*Controller->V1.NewLogicalDriveInformation)[LogicalDriveNumber];
-	      if (NewLogicalDriveInformation->LogicalDriveState !=
-		  OldLogicalDriveInformation->LogicalDriveState)
-		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
-				"is now %s\n", Controller,
-				LogicalDriveNumber,
-				Controller->ControllerNumber,
-				LogicalDriveNumber,
-				(NewLogicalDriveInformation->LogicalDriveState
-				 == DAC960_V1_LogicalDrive_Online
-				 ? "ONLINE"
-				 : NewLogicalDriveInformation->LogicalDriveState
-				   == DAC960_V1_LogicalDrive_Critical
-				   ? "CRITICAL" : "OFFLINE"));
-	      if (NewLogicalDriveInformation->WriteBack !=
-		  OldLogicalDriveInformation->WriteBack)
-		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
-				"is now %s\n", Controller,
-				LogicalDriveNumber,
-				Controller->ControllerNumber,
-				LogicalDriveNumber,
-				(NewLogicalDriveInformation->WriteBack
-				 ? "WRITE BACK" : "WRITE THRU"));
-	    }
-	  memcpy(&Controller->V1.LogicalDriveInformation,
-		 Controller->V1.NewLogicalDriveInformation,
-		 sizeof(DAC960_V1_LogicalDriveInformationArray_T));
-	}
-      else if (CommandOpcode == DAC960_V1_GetRebuildProgress)
-	{
-	  unsigned int LogicalDriveNumber =
-	    Controller->V1.RebuildProgress->LogicalDriveNumber;
-	  unsigned int LogicalDriveSize =
-	    Controller->V1.RebuildProgress->LogicalDriveSize;
-	  unsigned int BlocksCompleted =
-	    LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
-	  if (CommandStatus == DAC960_V1_NoRebuildOrCheckInProgress &&
-	      Controller->V1.LastRebuildStatus == DAC960_V1_NormalCompletion)
-	    CommandStatus = DAC960_V1_RebuildSuccessful;
-	  switch (CommandStatus)
-	    {
-	    case DAC960_V1_NormalCompletion:
-	      Controller->EphemeralProgressMessage = true;
-	      DAC960_Progress("Rebuild in Progress: "
-			      "Logical Drive %d (/dev/rd/c%dd%d) "
-			      "%d%% completed\n",
-			      Controller, LogicalDriveNumber,
-			      Controller->ControllerNumber,
-			      LogicalDriveNumber,
-			      (100 * (BlocksCompleted >> 7))
-			      / (LogicalDriveSize >> 7));
-	      Controller->EphemeralProgressMessage = false;
-	      break;
-	    case DAC960_V1_RebuildFailed_LogicalDriveFailure:
-	      DAC960_Progress("Rebuild Failed due to "
-			      "Logical Drive Failure\n", Controller);
-	      break;
-	    case DAC960_V1_RebuildFailed_BadBlocksOnOther:
-	      DAC960_Progress("Rebuild Failed due to "
-			      "Bad Blocks on Other Drives\n", Controller);
-	      break;
-	    case DAC960_V1_RebuildFailed_NewDriveFailed:
-	      DAC960_Progress("Rebuild Failed due to "
-			      "Failure of Drive Being Rebuilt\n", Controller);
-	      break;
-	    case DAC960_V1_NoRebuildOrCheckInProgress:
-	      break;
-	    case DAC960_V1_RebuildSuccessful:
-	      DAC960_Progress("Rebuild Completed Successfully\n", Controller);
-	      break;
-	    case DAC960_V1_RebuildSuccessfullyTerminated:
-	      DAC960_Progress("Rebuild Successfully Terminated\n", Controller);
-	      break;
-	    }
-	  Controller->V1.LastRebuildStatus = CommandStatus;
-	  if (CommandType != DAC960_MonitoringCommand &&
-	      Controller->V1.RebuildStatusPending)
-	    {
-	      Command->V1.CommandStatus = Controller->V1.PendingRebuildStatus;
-	      Controller->V1.RebuildStatusPending = false;
-	    }
-	  else if (CommandType == DAC960_MonitoringCommand &&
-		   CommandStatus != DAC960_V1_NormalCompletion &&
-		   CommandStatus != DAC960_V1_NoRebuildOrCheckInProgress)
-	    {
-	      Controller->V1.PendingRebuildStatus = CommandStatus;
-	      Controller->V1.RebuildStatusPending = true;
-	    }
-	}
-      else if (CommandOpcode == DAC960_V1_RebuildStat)
-	{
-	  unsigned int LogicalDriveNumber =
-	    Controller->V1.RebuildProgress->LogicalDriveNumber;
-	  unsigned int LogicalDriveSize =
-	    Controller->V1.RebuildProgress->LogicalDriveSize;
-	  unsigned int BlocksCompleted =
-	    LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
-	  if (CommandStatus == DAC960_V1_NormalCompletion)
-	    {
-	      Controller->EphemeralProgressMessage = true;
-	      DAC960_Progress("Consistency Check in Progress: "
-			      "Logical Drive %d (/dev/rd/c%dd%d) "
-			      "%d%% completed\n",
-			      Controller, LogicalDriveNumber,
-			      Controller->ControllerNumber,
-			      LogicalDriveNumber,
-			      (100 * (BlocksCompleted >> 7))
-			      / (LogicalDriveSize >> 7));
-	      Controller->EphemeralProgressMessage = false;
-	    }
-	}
-      else if (CommandOpcode == DAC960_V1_BackgroundInitializationControl)
-	{
-	  unsigned int LogicalDriveNumber =
-	    Controller->V1.BackgroundInitializationStatus->LogicalDriveNumber;
-	  unsigned int LogicalDriveSize =
-	    Controller->V1.BackgroundInitializationStatus->LogicalDriveSize;
-	  unsigned int BlocksCompleted =
-	    Controller->V1.BackgroundInitializationStatus->BlocksCompleted;
-	  switch (CommandStatus)
-	    {
-	    case DAC960_V1_NormalCompletion:
-	      switch (Controller->V1.BackgroundInitializationStatus->Status)
-		{
-		case DAC960_V1_BackgroundInitializationInvalid:
-		  break;
-		case DAC960_V1_BackgroundInitializationStarted:
-		  DAC960_Progress("Background Initialization Started\n",
-				  Controller);
-		  break;
-		case DAC960_V1_BackgroundInitializationInProgress:
-		  if (BlocksCompleted ==
-		      Controller->V1.LastBackgroundInitializationStatus.
-				BlocksCompleted &&
-		      LogicalDriveNumber ==
-		      Controller->V1.LastBackgroundInitializationStatus.
-				LogicalDriveNumber)
-		    break;
-		  Controller->EphemeralProgressMessage = true;
-		  DAC960_Progress("Background Initialization in Progress: "
-				  "Logical Drive %d (/dev/rd/c%dd%d) "
-				  "%d%% completed\n",
-				  Controller, LogicalDriveNumber,
-				  Controller->ControllerNumber,
-				  LogicalDriveNumber,
-				  (100 * (BlocksCompleted >> 7))
-				  / (LogicalDriveSize >> 7));
-		  Controller->EphemeralProgressMessage = false;
-		  break;
-		case DAC960_V1_BackgroundInitializationSuspended:
-		  DAC960_Progress("Background Initialization Suspended\n",
-				  Controller);
-		  break;
-		case DAC960_V1_BackgroundInitializationCancelled:
-		  DAC960_Progress("Background Initialization Cancelled\n",
-				  Controller);
-		  break;
-		}
-	      memcpy(&Controller->V1.LastBackgroundInitializationStatus,
-		     Controller->V1.BackgroundInitializationStatus,
-		     sizeof(DAC960_V1_BackgroundInitializationStatus_T));
-	      break;
-	    case DAC960_V1_BackgroundInitSuccessful:
-	      if (Controller->V1.BackgroundInitializationStatus->Status ==
-		  DAC960_V1_BackgroundInitializationInProgress)
-		DAC960_Progress("Background Initialization "
-				"Completed Successfully\n", Controller);
-	      Controller->V1.BackgroundInitializationStatus->Status =
-		DAC960_V1_BackgroundInitializationInvalid;
-	      break;
-	    case DAC960_V1_BackgroundInitAborted:
-	      if (Controller->V1.BackgroundInitializationStatus->Status ==
-		  DAC960_V1_BackgroundInitializationInProgress)
-		DAC960_Progress("Background Initialization Aborted\n",
-				Controller);
-	      Controller->V1.BackgroundInitializationStatus->Status =
-		DAC960_V1_BackgroundInitializationInvalid;
-	      break;
-	    case DAC960_V1_NoBackgroundInitInProgress:
-	      break;
-	    }
-	} 
-      else if (CommandOpcode == DAC960_V1_DCDB)
-	{
-	   /*
-	     This is a bit ugly.
-
-	     The InquiryStandardData and 
-	     the InquiryUntitSerialNumber information
-	     retrieval operations BOTH use the DAC960_V1_DCDB
-	     commands.  the test above can't distinguish between
-	     these two cases.
-
-	     Instead, we rely on the order of code later in this
-             function to ensure that DeviceInquiryInformation commands
-             are submitted before DeviceSerialNumber commands.
-	   */
-	   if (Controller->V1.NeedDeviceInquiryInformation)
-	     {
-	        DAC960_SCSI_Inquiry_T *InquiryStandardData =
-			&Controller->V1.InquiryStandardData
-				[Controller->V1.DeviceStateChannel]
-				[Controller->V1.DeviceStateTargetID];
-	        if (CommandStatus != DAC960_V1_NormalCompletion)
-		   {
-			memset(InquiryStandardData, 0,
-				sizeof(DAC960_SCSI_Inquiry_T));
-	      		InquiryStandardData->PeripheralDeviceType = 0x1F;
-		    }
-	         else
-			memcpy(InquiryStandardData, 
-				Controller->V1.NewInquiryStandardData,
-				sizeof(DAC960_SCSI_Inquiry_T));
-	         Controller->V1.NeedDeviceInquiryInformation = false;
-              }
-	   else if (Controller->V1.NeedDeviceSerialNumberInformation) 
-              {
-	        DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
-		  &Controller->V1.InquiryUnitSerialNumber
-				[Controller->V1.DeviceStateChannel]
-				[Controller->V1.DeviceStateTargetID];
-	         if (CommandStatus != DAC960_V1_NormalCompletion)
-		   {
-			memset(InquiryUnitSerialNumber, 0,
-				sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
-	      		InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
-		    }
-	          else
-			memcpy(InquiryUnitSerialNumber, 
-				Controller->V1.NewInquiryUnitSerialNumber,
-				sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
-	      Controller->V1.NeedDeviceSerialNumberInformation = false;
-	     }
-	}
-      /*
-        Begin submitting new monitoring commands.
-       */
-      if (Controller->V1.NewEventLogSequenceNumber
-	  - Controller->V1.OldEventLogSequenceNumber > 0)
-	{
-	  Command->V1.CommandMailbox.Type3E.CommandOpcode =
-	    DAC960_V1_PerformEventLogOperation;
-	  Command->V1.CommandMailbox.Type3E.OperationType =
-	    DAC960_V1_GetEventLogEntry;
-	  Command->V1.CommandMailbox.Type3E.OperationQualifier = 1;
-	  Command->V1.CommandMailbox.Type3E.SequenceNumber =
-	    Controller->V1.OldEventLogSequenceNumber;
-	  Command->V1.CommandMailbox.Type3E.BusAddress =
-	    	Controller->V1.EventLogEntryDMA;
-	  DAC960_QueueCommand(Command);
-	  return;
-	}
-      if (Controller->V1.NeedErrorTableInformation)
-	{
-	  Controller->V1.NeedErrorTableInformation = false;
-	  Command->V1.CommandMailbox.Type3.CommandOpcode =
-	    DAC960_V1_GetErrorTable;
-	  Command->V1.CommandMailbox.Type3.BusAddress =
-	    	Controller->V1.NewErrorTableDMA;
-	  DAC960_QueueCommand(Command);
-	  return;
-	}
-      if (Controller->V1.NeedRebuildProgress &&
-	  Controller->V1.RebuildProgressFirst)
-	{
-	  Controller->V1.NeedRebuildProgress = false;
-	  Command->V1.CommandMailbox.Type3.CommandOpcode =
-	    DAC960_V1_GetRebuildProgress;
-	  Command->V1.CommandMailbox.Type3.BusAddress =
-	    Controller->V1.RebuildProgressDMA;
-	  DAC960_QueueCommand(Command);
-	  return;
-	}
-      if (Controller->V1.NeedDeviceStateInformation)
-	{
-	  if (Controller->V1.NeedDeviceInquiryInformation)
-	    {
-	      DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
-	      dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
-
-	      dma_addr_t NewInquiryStandardDataDMA =
-		Controller->V1.NewInquiryStandardDataDMA;
-
-	      Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
-	      Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
-	      DCDB->Channel = Controller->V1.DeviceStateChannel;
-	      DCDB->TargetID = Controller->V1.DeviceStateTargetID;
-	      DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
-	      DCDB->EarlyStatus = false;
-	      DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
-	      DCDB->NoAutomaticRequestSense = false;
-	      DCDB->DisconnectPermitted = true;
-	      DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
-	      DCDB->BusAddress = NewInquiryStandardDataDMA;
-	      DCDB->CDBLength = 6;
-	      DCDB->TransferLengthHigh4 = 0;
-	      DCDB->SenseLength = sizeof(DCDB->SenseData);
-	      DCDB->CDB[0] = 0x12; /* INQUIRY */
-	      DCDB->CDB[1] = 0; /* EVPD = 0 */
-	      DCDB->CDB[2] = 0; /* Page Code */
-	      DCDB->CDB[3] = 0; /* Reserved */
-	      DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
-	      DCDB->CDB[5] = 0; /* Control */
-	      DAC960_QueueCommand(Command);
-	      return;
-	    }
-	  if (Controller->V1.NeedDeviceSerialNumberInformation)
-	    {
-	      DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
-	      dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
-	      dma_addr_t NewInquiryUnitSerialNumberDMA = 
-			Controller->V1.NewInquiryUnitSerialNumberDMA;
-
-	      Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
-	      Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
-	      DCDB->Channel = Controller->V1.DeviceStateChannel;
-	      DCDB->TargetID = Controller->V1.DeviceStateTargetID;
-	      DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
-	      DCDB->EarlyStatus = false;
-	      DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
-	      DCDB->NoAutomaticRequestSense = false;
-	      DCDB->DisconnectPermitted = true;
-	      DCDB->TransferLength =
-		sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
-	      DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
-	      DCDB->CDBLength = 6;
-	      DCDB->TransferLengthHigh4 = 0;
-	      DCDB->SenseLength = sizeof(DCDB->SenseData);
-	      DCDB->CDB[0] = 0x12; /* INQUIRY */
-	      DCDB->CDB[1] = 1; /* EVPD = 1 */
-	      DCDB->CDB[2] = 0x80; /* Page Code */
-	      DCDB->CDB[3] = 0; /* Reserved */
-	      DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
-	      DCDB->CDB[5] = 0; /* Control */
-	      DAC960_QueueCommand(Command);
-	      return;
-	    }
-	  if (Controller->V1.StartDeviceStateScan)
-	    {
-	      Controller->V1.DeviceStateChannel = 0;
-	      Controller->V1.DeviceStateTargetID = 0;
-	      Controller->V1.StartDeviceStateScan = false;
-	    }
-	  else if (++Controller->V1.DeviceStateTargetID == Controller->Targets)
-	    {
-	      Controller->V1.DeviceStateChannel++;
-	      Controller->V1.DeviceStateTargetID = 0;
-	    }
-	  if (Controller->V1.DeviceStateChannel < Controller->Channels)
-	    {
-	      Controller->V1.NewDeviceState->DeviceState =
-		DAC960_V1_Device_Dead;
-	      Command->V1.CommandMailbox.Type3D.CommandOpcode =
-		DAC960_V1_GetDeviceState;
-	      Command->V1.CommandMailbox.Type3D.Channel =
-		Controller->V1.DeviceStateChannel;
-	      Command->V1.CommandMailbox.Type3D.TargetID =
-		Controller->V1.DeviceStateTargetID;
-	      Command->V1.CommandMailbox.Type3D.BusAddress =
-		Controller->V1.NewDeviceStateDMA;
-	      DAC960_QueueCommand(Command);
-	      return;
-	    }
-	  Controller->V1.NeedDeviceStateInformation = false;
-	}
-      if (Controller->V1.NeedLogicalDriveInformation)
-	{
-	  Controller->V1.NeedLogicalDriveInformation = false;
-	  Command->V1.CommandMailbox.Type3.CommandOpcode =
-	    DAC960_V1_GetLogicalDriveInformation;
-	  Command->V1.CommandMailbox.Type3.BusAddress =
-	    Controller->V1.NewLogicalDriveInformationDMA;
-	  DAC960_QueueCommand(Command);
-	  return;
-	}
-      if (Controller->V1.NeedRebuildProgress)
-	{
-	  Controller->V1.NeedRebuildProgress = false;
-	  Command->V1.CommandMailbox.Type3.CommandOpcode =
-	    DAC960_V1_GetRebuildProgress;
-	  Command->V1.CommandMailbox.Type3.BusAddress =
-	    	Controller->V1.RebuildProgressDMA;
-	  DAC960_QueueCommand(Command);
-	  return;
-	}
-      if (Controller->V1.NeedConsistencyCheckProgress)
-	{
-	  Controller->V1.NeedConsistencyCheckProgress = false;
-	  Command->V1.CommandMailbox.Type3.CommandOpcode =
-	    DAC960_V1_RebuildStat;
-	  Command->V1.CommandMailbox.Type3.BusAddress =
-	    Controller->V1.RebuildProgressDMA;
-	  DAC960_QueueCommand(Command);
-	  return;
-	}
-      if (Controller->V1.NeedBackgroundInitializationStatus)
-	{
-	  Controller->V1.NeedBackgroundInitializationStatus = false;
-	  Command->V1.CommandMailbox.Type3B.CommandOpcode =
-	    DAC960_V1_BackgroundInitializationControl;
-	  Command->V1.CommandMailbox.Type3B.CommandOpcode2 = 0x20;
-	  Command->V1.CommandMailbox.Type3B.BusAddress =
-	    Controller->V1.BackgroundInitializationStatusDMA;
-	  DAC960_QueueCommand(Command);
-	  return;
-	}
-      Controller->MonitoringTimerCount++;
-      Controller->MonitoringTimer.expires =
-	jiffies + DAC960_MonitoringTimerInterval;
-      	add_timer(&Controller->MonitoringTimer);
-    }
-  if (CommandType == DAC960_ImmediateCommand)
-    {
-      complete(Command->Completion);
-      Command->Completion = NULL;
-      return;
-    }
-  if (CommandType == DAC960_QueuedCommand)
-    {
-      DAC960_V1_KernelCommand_T *KernelCommand = Command->V1.KernelCommand;
-      KernelCommand->CommandStatus = Command->V1.CommandStatus;
-      Command->V1.KernelCommand = NULL;
-      if (CommandOpcode == DAC960_V1_DCDB)
-	Controller->V1.DirectCommandActive[KernelCommand->DCDB->Channel]
-					  [KernelCommand->DCDB->TargetID] =
-	  false;
-      DAC960_DeallocateCommand(Command);
-      KernelCommand->CompletionFunction(KernelCommand);
-      return;
-    }
-  /*
-    Queue a Status Monitoring Command to the Controller using the just
-    completed Command if one was deferred previously due to lack of a
-    free Command when the Monitoring Timer Function was called.
-  */
-  if (Controller->MonitoringCommandDeferred)
-    {
-      Controller->MonitoringCommandDeferred = false;
-      DAC960_V1_QueueMonitoringCommand(Command);
-      return;
-    }
-  /*
-    Deallocate the Command.
-  */
-  DAC960_DeallocateCommand(Command);
-  /*
-    Wake up any processes waiting on a free Command.
-  */
-  wake_up(&Controller->CommandWaitQueue);
-}
-
-
-/*
-  DAC960_V2_ReadWriteError prints an appropriate error message for Command
-  when an error occurs on a Read or Write operation.
-*/
-
-static void DAC960_V2_ReadWriteError(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  static const unsigned char *SenseErrors[] = {
-    "NO SENSE", "RECOVERED ERROR",
-    "NOT READY", "MEDIUM ERROR",
-    "HARDWARE ERROR", "ILLEGAL REQUEST",
-    "UNIT ATTENTION", "DATA PROTECT",
-    "BLANK CHECK", "VENDOR-SPECIFIC",
-    "COPY ABORTED", "ABORTED COMMAND",
-    "EQUAL", "VOLUME OVERFLOW",
-    "MISCOMPARE", "RESERVED"
-  };
-  unsigned char *CommandName = "UNKNOWN";
-  switch (Command->CommandType)
-    {
-    case DAC960_ReadCommand:
-    case DAC960_ReadRetryCommand:
-      CommandName = "READ";
-      break;
-    case DAC960_WriteCommand:
-    case DAC960_WriteRetryCommand:
-      CommandName = "WRITE";
-      break;
-    case DAC960_MonitoringCommand:
-    case DAC960_ImmediateCommand:
-    case DAC960_QueuedCommand:
-      break;
-    }
-  DAC960_Error("Error Condition %s on %s:\n", Controller,
-	       SenseErrors[Command->V2.RequestSense->SenseKey], CommandName);
-  DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
-	       Controller, Controller->ControllerNumber,
-	       Command->LogicalDriveNumber, Command->BlockNumber,
-	       Command->BlockNumber + Command->BlockCount - 1);
-}
-
-
-/*
-  DAC960_V2_ReportEvent prints an appropriate message when a Controller Event
-  occurs.
-*/
-
-static void DAC960_V2_ReportEvent(DAC960_Controller_T *Controller,
-				  DAC960_V2_Event_T *Event)
-{
-  DAC960_SCSI_RequestSense_T *RequestSense =
-    (DAC960_SCSI_RequestSense_T *) &Event->RequestSenseData;
-  unsigned char MessageBuffer[DAC960_LineBufferSize];
-  static struct { int EventCode; unsigned char *EventMessage; } EventList[] =
-    { /* Physical Device Events (0x0000 - 0x007F) */
-      { 0x0001, "P Online" },
-      { 0x0002, "P Standby" },
-      { 0x0005, "P Automatic Rebuild Started" },
-      { 0x0006, "P Manual Rebuild Started" },
-      { 0x0007, "P Rebuild Completed" },
-      { 0x0008, "P Rebuild Cancelled" },
-      { 0x0009, "P Rebuild Failed for Unknown Reasons" },
-      { 0x000A, "P Rebuild Failed due to New Physical Device" },
-      { 0x000B, "P Rebuild Failed due to Logical Drive Failure" },
-      { 0x000C, "S Offline" },
-      { 0x000D, "P Found" },
-      { 0x000E, "P Removed" },
-      { 0x000F, "P Unconfigured" },
-      { 0x0010, "P Expand Capacity Started" },
-      { 0x0011, "P Expand Capacity Completed" },
-      { 0x0012, "P Expand Capacity Failed" },
-      { 0x0013, "P Command Timed Out" },
-      { 0x0014, "P Command Aborted" },
-      { 0x0015, "P Command Retried" },
-      { 0x0016, "P Parity Error" },
-      { 0x0017, "P Soft Error" },
-      { 0x0018, "P Miscellaneous Error" },
-      { 0x0019, "P Reset" },
-      { 0x001A, "P Active Spare Found" },
-      { 0x001B, "P Warm Spare Found" },
-      { 0x001C, "S Sense Data Received" },
-      { 0x001D, "P Initialization Started" },
-      { 0x001E, "P Initialization Completed" },
-      { 0x001F, "P Initialization Failed" },
-      { 0x0020, "P Initialization Cancelled" },
-      { 0x0021, "P Failed because Write Recovery Failed" },
-      { 0x0022, "P Failed because SCSI Bus Reset Failed" },
-      { 0x0023, "P Failed because of Double Check Condition" },
-      { 0x0024, "P Failed because Device Cannot Be Accessed" },
-      { 0x0025, "P Failed because of Gross Error on SCSI Processor" },
-      { 0x0026, "P Failed because of Bad Tag from Device" },
-      { 0x0027, "P Failed because of Command Timeout" },
-      { 0x0028, "P Failed because of System Reset" },
-      { 0x0029, "P Failed because of Busy Status or Parity Error" },
-      { 0x002A, "P Failed because Host Set Device to Failed State" },
-      { 0x002B, "P Failed because of Selection Timeout" },
-      { 0x002C, "P Failed because of SCSI Bus Phase Error" },
-      { 0x002D, "P Failed because Device Returned Unknown Status" },
-      { 0x002E, "P Failed because Device Not Ready" },
-      { 0x002F, "P Failed because Device Not Found at Startup" },
-      { 0x0030, "P Failed because COD Write Operation Failed" },
-      { 0x0031, "P Failed because BDT Write Operation Failed" },
-      { 0x0039, "P Missing at Startup" },
-      { 0x003A, "P Start Rebuild Failed due to Physical Drive Too Small" },
-      { 0x003C, "P Temporarily Offline Device Automatically Made Online" },
-      { 0x003D, "P Standby Rebuild Started" },
-      /* Logical Device Events (0x0080 - 0x00FF) */
-      { 0x0080, "M Consistency Check Started" },
-      { 0x0081, "M Consistency Check Completed" },
-      { 0x0082, "M Consistency Check Cancelled" },
-      { 0x0083, "M Consistency Check Completed With Errors" },
-      { 0x0084, "M Consistency Check Failed due to Logical Drive Failure" },
-      { 0x0085, "M Consistency Check Failed due to Physical Device Failure" },
-      { 0x0086, "L Offline" },
-      { 0x0087, "L Critical" },
-      { 0x0088, "L Online" },
-      { 0x0089, "M Automatic Rebuild Started" },
-      { 0x008A, "M Manual Rebuild Started" },
-      { 0x008B, "M Rebuild Completed" },
-      { 0x008C, "M Rebuild Cancelled" },
-      { 0x008D, "M Rebuild Failed for Unknown Reasons" },
-      { 0x008E, "M Rebuild Failed due to New Physical Device" },
-      { 0x008F, "M Rebuild Failed due to Logical Drive Failure" },
-      { 0x0090, "M Initialization Started" },
-      { 0x0091, "M Initialization Completed" },
-      { 0x0092, "M Initialization Cancelled" },
-      { 0x0093, "M Initialization Failed" },
-      { 0x0094, "L Found" },
-      { 0x0095, "L Deleted" },
-      { 0x0096, "M Expand Capacity Started" },
-      { 0x0097, "M Expand Capacity Completed" },
-      { 0x0098, "M Expand Capacity Failed" },
-      { 0x0099, "L Bad Block Found" },
-      { 0x009A, "L Size Changed" },
-      { 0x009B, "L Type Changed" },
-      { 0x009C, "L Bad Data Block Found" },
-      { 0x009E, "L Read of Data Block in BDT" },
-      { 0x009F, "L Write Back Data for Disk Block Lost" },
-      { 0x00A0, "L Temporarily Offline RAID-5/3 Drive Made Online" },
-      { 0x00A1, "L Temporarily Offline RAID-6/1/0/7 Drive Made Online" },
-      { 0x00A2, "L Standby Rebuild Started" },
-      /* Fault Management Events (0x0100 - 0x017F) */
-      { 0x0140, "E Fan %d Failed" },
-      { 0x0141, "E Fan %d OK" },
-      { 0x0142, "E Fan %d Not Present" },
-      { 0x0143, "E Power Supply %d Failed" },
-      { 0x0144, "E Power Supply %d OK" },
-      { 0x0145, "E Power Supply %d Not Present" },
-      { 0x0146, "E Temperature Sensor %d Temperature Exceeds Safe Limit" },
-      { 0x0147, "E Temperature Sensor %d Temperature Exceeds Working Limit" },
-      { 0x0148, "E Temperature Sensor %d Temperature Normal" },
-      { 0x0149, "E Temperature Sensor %d Not Present" },
-      { 0x014A, "E Enclosure Management Unit %d Access Critical" },
-      { 0x014B, "E Enclosure Management Unit %d Access OK" },
-      { 0x014C, "E Enclosure Management Unit %d Access Offline" },
-      /* Controller Events (0x0180 - 0x01FF) */
-      { 0x0181, "C Cache Write Back Error" },
-      { 0x0188, "C Battery Backup Unit Found" },
-      { 0x0189, "C Battery Backup Unit Charge Level Low" },
-      { 0x018A, "C Battery Backup Unit Charge Level OK" },
-      { 0x0193, "C Installation Aborted" },
-      { 0x0195, "C Battery Backup Unit Physically Removed" },
-      { 0x0196, "C Memory Error During Warm Boot" },
-      { 0x019E, "C Memory Soft ECC Error Corrected" },
-      { 0x019F, "C Memory Hard ECC Error Corrected" },
-      { 0x01A2, "C Battery Backup Unit Failed" },
-      { 0x01AB, "C Mirror Race Recovery Failed" },
-      { 0x01AC, "C Mirror Race on Critical Drive" },
-      /* Controller Internal Processor Events */
-      { 0x0380, "C Internal Controller Hung" },
-      { 0x0381, "C Internal Controller Firmware Breakpoint" },
-      { 0x0390, "C Internal Controller i960 Processor Specific Error" },
-      { 0x03A0, "C Internal Controller StrongARM Processor Specific Error" },
-      { 0, "" } };
-  int EventListIndex = 0, EventCode;
-  unsigned char EventType, *EventMessage;
-  if (Event->EventCode == 0x1C &&
-      RequestSense->SenseKey == DAC960_SenseKey_VendorSpecific &&
-      (RequestSense->AdditionalSenseCode == 0x80 ||
-       RequestSense->AdditionalSenseCode == 0x81))
-    Event->EventCode = ((RequestSense->AdditionalSenseCode - 0x80) << 8) |
-		       RequestSense->AdditionalSenseCodeQualifier;
-  while (true)
-    {
-      EventCode = EventList[EventListIndex].EventCode;
-      if (EventCode == Event->EventCode || EventCode == 0) break;
-      EventListIndex++;
-    }
-  EventType = EventList[EventListIndex].EventMessage[0];
-  EventMessage = &EventList[EventListIndex].EventMessage[2];
-  if (EventCode == 0)
-    {
-      DAC960_Critical("Unknown Controller Event Code %04X\n",
-		      Controller, Event->EventCode);
-      return;
-    }
-  switch (EventType)
-    {
-    case 'P':
-      DAC960_Critical("Physical Device %d:%d %s\n", Controller,
-		      Event->Channel, Event->TargetID, EventMessage);
-      break;
-    case 'L':
-      DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
-		      Event->LogicalUnit, Controller->ControllerNumber,
-		      Event->LogicalUnit, EventMessage);
-      break;
-    case 'M':
-      DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
-		      Event->LogicalUnit, Controller->ControllerNumber,
-		      Event->LogicalUnit, EventMessage);
-      break;
-    case 'S':
-      if (RequestSense->SenseKey == DAC960_SenseKey_NoSense ||
-	  (RequestSense->SenseKey == DAC960_SenseKey_NotReady &&
-	   RequestSense->AdditionalSenseCode == 0x04 &&
-	   (RequestSense->AdditionalSenseCodeQualifier == 0x01 ||
-	    RequestSense->AdditionalSenseCodeQualifier == 0x02)))
-	break;
-      DAC960_Critical("Physical Device %d:%d %s\n", Controller,
-		      Event->Channel, Event->TargetID, EventMessage);
-      DAC960_Critical("Physical Device %d:%d Request Sense: "
-		      "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
-		      Controller,
-		      Event->Channel,
-		      Event->TargetID,
-		      RequestSense->SenseKey,
-		      RequestSense->AdditionalSenseCode,
-		      RequestSense->AdditionalSenseCodeQualifier);
-      DAC960_Critical("Physical Device %d:%d Request Sense: "
-		      "Information = %02X%02X%02X%02X "
-		      "%02X%02X%02X%02X\n",
-		      Controller,
-		      Event->Channel,
-		      Event->TargetID,
-		      RequestSense->Information[0],
-		      RequestSense->Information[1],
-		      RequestSense->Information[2],
-		      RequestSense->Information[3],
-		      RequestSense->CommandSpecificInformation[0],
-		      RequestSense->CommandSpecificInformation[1],
-		      RequestSense->CommandSpecificInformation[2],
-		      RequestSense->CommandSpecificInformation[3]);
-      break;
-    case 'E':
-      if (Controller->SuppressEnclosureMessages) break;
-      sprintf(MessageBuffer, EventMessage, Event->LogicalUnit);
-      DAC960_Critical("Enclosure %d %s\n", Controller,
-		      Event->TargetID, MessageBuffer);
-      break;
-    case 'C':
-      DAC960_Critical("Controller %s\n", Controller, EventMessage);
-      break;
-    default:
-      DAC960_Critical("Unknown Controller Event Code %04X\n",
-		      Controller, Event->EventCode);
-      break;
-    }
-}
-
-
-/*
-  DAC960_V2_ReportProgress prints an appropriate progress message for
-  Logical Device Long Operations.
-*/
-
-static void DAC960_V2_ReportProgress(DAC960_Controller_T *Controller,
-				     unsigned char *MessageString,
-				     unsigned int LogicalDeviceNumber,
-				     unsigned long BlocksCompleted,
-				     unsigned long LogicalDeviceSize)
-{
-  Controller->EphemeralProgressMessage = true;
-  DAC960_Progress("%s in Progress: Logical Drive %d (/dev/rd/c%dd%d) "
-		  "%d%% completed\n", Controller,
-		  MessageString,
-		  LogicalDeviceNumber,
-		  Controller->ControllerNumber,
-		  LogicalDeviceNumber,
-		  (100 * (BlocksCompleted >> 7)) / (LogicalDeviceSize >> 7));
-  Controller->EphemeralProgressMessage = false;
-}
-
-
-/*
-  DAC960_V2_ProcessCompletedCommand performs completion processing for Command
-  for DAC960 V2 Firmware Controllers.
-*/
-
-static void DAC960_V2_ProcessCompletedCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  DAC960_CommandType_T CommandType = Command->CommandType;
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  DAC960_V2_IOCTL_Opcode_T IOCTLOpcode = CommandMailbox->Common.IOCTL_Opcode;
-  DAC960_V2_CommandOpcode_T CommandOpcode = CommandMailbox->SCSI_10.CommandOpcode;
-  DAC960_V2_CommandStatus_T CommandStatus = Command->V2.CommandStatus;
-
-  if (CommandType == DAC960_ReadCommand ||
-      CommandType == DAC960_WriteCommand)
-    {
-
-#ifdef FORCE_RETRY_DEBUG
-      CommandStatus = DAC960_V2_AbormalCompletion;
-#endif
-      Command->V2.RequestSense->SenseKey = DAC960_SenseKey_MediumError;
-
-      if (CommandStatus == DAC960_V2_NormalCompletion) {
-
-		if (!DAC960_ProcessCompletedRequest(Command, true))
-			BUG();
-
-      } else if (Command->V2.RequestSense->SenseKey == DAC960_SenseKey_MediumError)
-	{
-	  /*
-	   * break the command down into pieces and resubmit each
-	   * piece, hoping that some of them will succeed.
-	   */
-	   DAC960_queue_partial_rw(Command);
-	   return;
-	}
-      else
-	{
-	  if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
-	    DAC960_V2_ReadWriteError(Command);
-	  /*
-	    Perform completion processing for all buffers in this I/O Request.
-	  */
-          (void)DAC960_ProcessCompletedRequest(Command, false);
-	}
-    }
-  else if (CommandType == DAC960_ReadRetryCommand ||
-	   CommandType == DAC960_WriteRetryCommand)
-    {
-      bool normal_completion;
-
-#ifdef FORCE_RETRY_FAILURE_DEBUG
-      static int retry_count = 1;
-#endif
-      /*
-        Perform completion processing for the portion that was
-	retried, and submit the next portion, if any.
-      */
-      normal_completion = true;
-      if (CommandStatus != DAC960_V2_NormalCompletion) {
-	normal_completion = false;
-	if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
-	    DAC960_V2_ReadWriteError(Command);
-      }
-
-#ifdef FORCE_RETRY_FAILURE_DEBUG
-      if (!(++retry_count % 10000)) {
-	      printk("V2 error retry failure test\n");
-	      normal_completion = false;
-	      DAC960_V2_ReadWriteError(Command);
-      }
-#endif
-
-      if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
-		DAC960_queue_partial_rw(Command);
-        	return;
-      }
-    }
-  else if (CommandType == DAC960_MonitoringCommand)
-    {
-      if (Controller->ShutdownMonitoringTimer)
-	      return;
-      if (IOCTLOpcode == DAC960_V2_GetControllerInfo)
-	{
-	  DAC960_V2_ControllerInfo_T *NewControllerInfo =
-	    Controller->V2.NewControllerInformation;
-	  DAC960_V2_ControllerInfo_T *ControllerInfo =
-	    &Controller->V2.ControllerInformation;
-	  Controller->LogicalDriveCount =
-	    NewControllerInfo->LogicalDevicesPresent;
-	  Controller->V2.NeedLogicalDeviceInformation = true;
-	  Controller->V2.NeedPhysicalDeviceInformation = true;
-	  Controller->V2.StartLogicalDeviceInformationScan = true;
-	  Controller->V2.StartPhysicalDeviceInformationScan = true;
-	  Controller->MonitoringAlertMode =
-	    (NewControllerInfo->LogicalDevicesCritical > 0 ||
-	     NewControllerInfo->LogicalDevicesOffline > 0 ||
-	     NewControllerInfo->PhysicalDisksCritical > 0 ||
-	     NewControllerInfo->PhysicalDisksOffline > 0);
-	  memcpy(ControllerInfo, NewControllerInfo,
-		 sizeof(DAC960_V2_ControllerInfo_T));
-	}
-      else if (IOCTLOpcode == DAC960_V2_GetEvent)
-	{
-	  if (CommandStatus == DAC960_V2_NormalCompletion) {
-	    DAC960_V2_ReportEvent(Controller, Controller->V2.Event);
-	  }
-	  Controller->V2.NextEventSequenceNumber++;
-	}
-      else if (IOCTLOpcode == DAC960_V2_GetPhysicalDeviceInfoValid &&
-	       CommandStatus == DAC960_V2_NormalCompletion)
-	{
-	  DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
-	    Controller->V2.NewPhysicalDeviceInformation;
-	  unsigned int PhysicalDeviceIndex = Controller->V2.PhysicalDeviceIndex;
-	  DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
-	    Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
-	  DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
-	    Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
-	  unsigned int DeviceIndex;
-	  while (PhysicalDeviceInfo != NULL &&
-		 (NewPhysicalDeviceInfo->Channel >
-		  PhysicalDeviceInfo->Channel ||
-		  (NewPhysicalDeviceInfo->Channel ==
-		   PhysicalDeviceInfo->Channel &&
-		   (NewPhysicalDeviceInfo->TargetID >
-		    PhysicalDeviceInfo->TargetID ||
-		   (NewPhysicalDeviceInfo->TargetID ==
-		    PhysicalDeviceInfo->TargetID &&
-		    NewPhysicalDeviceInfo->LogicalUnit >
-		    PhysicalDeviceInfo->LogicalUnit)))))
-	    {
-	      DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
-			      Controller,
-			      PhysicalDeviceInfo->Channel,
-			      PhysicalDeviceInfo->TargetID);
-	      Controller->V2.PhysicalDeviceInformation
-			     [PhysicalDeviceIndex] = NULL;
-	      Controller->V2.InquiryUnitSerialNumber
-			     [PhysicalDeviceIndex] = NULL;
-	      kfree(PhysicalDeviceInfo);
-	      kfree(InquiryUnitSerialNumber);
-	      for (DeviceIndex = PhysicalDeviceIndex;
-		   DeviceIndex < DAC960_V2_MaxPhysicalDevices - 1;
-		   DeviceIndex++)
-		{
-		  Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
-		    Controller->V2.PhysicalDeviceInformation[DeviceIndex+1];
-		  Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
-		    Controller->V2.InquiryUnitSerialNumber[DeviceIndex+1];
-		}
-	      Controller->V2.PhysicalDeviceInformation
-			     [DAC960_V2_MaxPhysicalDevices-1] = NULL;
-	      Controller->V2.InquiryUnitSerialNumber
-			     [DAC960_V2_MaxPhysicalDevices-1] = NULL;
-	      PhysicalDeviceInfo =
-		Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
-	      InquiryUnitSerialNumber =
-		Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
-	    }
-	  if (PhysicalDeviceInfo == NULL ||
-	      (NewPhysicalDeviceInfo->Channel !=
-	       PhysicalDeviceInfo->Channel) ||
-	      (NewPhysicalDeviceInfo->TargetID !=
-	       PhysicalDeviceInfo->TargetID) ||
-	      (NewPhysicalDeviceInfo->LogicalUnit !=
-	       PhysicalDeviceInfo->LogicalUnit))
-	    {
-	      PhysicalDeviceInfo =
-		kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T), GFP_ATOMIC);
-	      InquiryUnitSerialNumber =
-		  kmalloc(sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
-			  GFP_ATOMIC);
-	      if (InquiryUnitSerialNumber == NULL ||
-		  PhysicalDeviceInfo == NULL)
-		{
-		  kfree(InquiryUnitSerialNumber);
-		  InquiryUnitSerialNumber = NULL;
-		  kfree(PhysicalDeviceInfo);
-		  PhysicalDeviceInfo = NULL;
-		}
-	      DAC960_Critical("Physical Device %d:%d Now Exists%s\n",
-			      Controller,
-			      NewPhysicalDeviceInfo->Channel,
-			      NewPhysicalDeviceInfo->TargetID,
-			      (PhysicalDeviceInfo != NULL
-			       ? "" : " - Allocation Failed"));
-	      if (PhysicalDeviceInfo != NULL)
-		{
-		  memset(PhysicalDeviceInfo, 0,
-			 sizeof(DAC960_V2_PhysicalDeviceInfo_T));
-		  PhysicalDeviceInfo->PhysicalDeviceState =
-		    DAC960_V2_Device_InvalidState;
-		  memset(InquiryUnitSerialNumber, 0,
-			 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
-		  InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
-		  for (DeviceIndex = DAC960_V2_MaxPhysicalDevices - 1;
-		       DeviceIndex > PhysicalDeviceIndex;
-		       DeviceIndex--)
-		    {
-		      Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
-			Controller->V2.PhysicalDeviceInformation[DeviceIndex-1];
-		      Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
-			Controller->V2.InquiryUnitSerialNumber[DeviceIndex-1];
-		    }
-		  Controller->V2.PhysicalDeviceInformation
-				 [PhysicalDeviceIndex] =
-		    PhysicalDeviceInfo;
-		  Controller->V2.InquiryUnitSerialNumber
-				 [PhysicalDeviceIndex] =
-		    InquiryUnitSerialNumber;
-		  Controller->V2.NeedDeviceSerialNumberInformation = true;
-		}
-	    }
-	  if (PhysicalDeviceInfo != NULL)
-	    {
-	      if (NewPhysicalDeviceInfo->PhysicalDeviceState !=
-		  PhysicalDeviceInfo->PhysicalDeviceState)
-		DAC960_Critical(
-		  "Physical Device %d:%d is now %s\n", Controller,
-		  NewPhysicalDeviceInfo->Channel,
-		  NewPhysicalDeviceInfo->TargetID,
-		  (NewPhysicalDeviceInfo->PhysicalDeviceState
-		   == DAC960_V2_Device_Online
-		   ? "ONLINE"
-		   : NewPhysicalDeviceInfo->PhysicalDeviceState
-		     == DAC960_V2_Device_Rebuild
-		     ? "REBUILD"
-		     : NewPhysicalDeviceInfo->PhysicalDeviceState
-		       == DAC960_V2_Device_Missing
-		       ? "MISSING"
-		       : NewPhysicalDeviceInfo->PhysicalDeviceState
-			 == DAC960_V2_Device_Critical
-			 ? "CRITICAL"
-			 : NewPhysicalDeviceInfo->PhysicalDeviceState
-			   == DAC960_V2_Device_Dead
-			   ? "DEAD"
-			   : NewPhysicalDeviceInfo->PhysicalDeviceState
-			     == DAC960_V2_Device_SuspectedDead
-			     ? "SUSPECTED-DEAD"
-			     : NewPhysicalDeviceInfo->PhysicalDeviceState
-			       == DAC960_V2_Device_CommandedOffline
-			       ? "COMMANDED-OFFLINE"
-			       : NewPhysicalDeviceInfo->PhysicalDeviceState
-				 == DAC960_V2_Device_Standby
-				 ? "STANDBY" : "UNKNOWN"));
-	      if ((NewPhysicalDeviceInfo->ParityErrors !=
-		   PhysicalDeviceInfo->ParityErrors) ||
-		  (NewPhysicalDeviceInfo->SoftErrors !=
-		   PhysicalDeviceInfo->SoftErrors) ||
-		  (NewPhysicalDeviceInfo->HardErrors !=
-		   PhysicalDeviceInfo->HardErrors) ||
-		  (NewPhysicalDeviceInfo->MiscellaneousErrors !=
-		   PhysicalDeviceInfo->MiscellaneousErrors) ||
-		  (NewPhysicalDeviceInfo->CommandTimeouts !=
-		   PhysicalDeviceInfo->CommandTimeouts) ||
-		  (NewPhysicalDeviceInfo->Retries !=
-		   PhysicalDeviceInfo->Retries) ||
-		  (NewPhysicalDeviceInfo->Aborts !=
-		   PhysicalDeviceInfo->Aborts) ||
-		  (NewPhysicalDeviceInfo->PredictedFailuresDetected !=
-		   PhysicalDeviceInfo->PredictedFailuresDetected))
-		{
-		  DAC960_Critical("Physical Device %d:%d Errors: "
-				  "Parity = %d, Soft = %d, "
-				  "Hard = %d, Misc = %d\n",
-				  Controller,
-				  NewPhysicalDeviceInfo->Channel,
-				  NewPhysicalDeviceInfo->TargetID,
-				  NewPhysicalDeviceInfo->ParityErrors,
-				  NewPhysicalDeviceInfo->SoftErrors,
-				  NewPhysicalDeviceInfo->HardErrors,
-				  NewPhysicalDeviceInfo->MiscellaneousErrors);
-		  DAC960_Critical("Physical Device %d:%d Errors: "
-				  "Timeouts = %d, Retries = %d, "
-				  "Aborts = %d, Predicted = %d\n",
-				  Controller,
-				  NewPhysicalDeviceInfo->Channel,
-				  NewPhysicalDeviceInfo->TargetID,
-				  NewPhysicalDeviceInfo->CommandTimeouts,
-				  NewPhysicalDeviceInfo->Retries,
-				  NewPhysicalDeviceInfo->Aborts,
-				  NewPhysicalDeviceInfo
-				  ->PredictedFailuresDetected);
-		}
-	      if ((PhysicalDeviceInfo->PhysicalDeviceState
-		   == DAC960_V2_Device_Dead ||
-		   PhysicalDeviceInfo->PhysicalDeviceState
-		   == DAC960_V2_Device_InvalidState) &&
-		  NewPhysicalDeviceInfo->PhysicalDeviceState
-		  != DAC960_V2_Device_Dead)
-		Controller->V2.NeedDeviceSerialNumberInformation = true;
-	      memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
-		     sizeof(DAC960_V2_PhysicalDeviceInfo_T));
-	    }
-	  NewPhysicalDeviceInfo->LogicalUnit++;
-	  Controller->V2.PhysicalDeviceIndex++;
-	}
-      else if (IOCTLOpcode == DAC960_V2_GetPhysicalDeviceInfoValid)
-	{
-	  unsigned int DeviceIndex;
-	  for (DeviceIndex = Controller->V2.PhysicalDeviceIndex;
-	       DeviceIndex < DAC960_V2_MaxPhysicalDevices;
-	       DeviceIndex++)
-	    {
-	      DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
-		Controller->V2.PhysicalDeviceInformation[DeviceIndex];
-	      DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
-		Controller->V2.InquiryUnitSerialNumber[DeviceIndex];
-	      if (PhysicalDeviceInfo == NULL) break;
-	      DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
-			      Controller,
-			      PhysicalDeviceInfo->Channel,
-			      PhysicalDeviceInfo->TargetID);
-	      Controller->V2.PhysicalDeviceInformation[DeviceIndex] = NULL;
-	      Controller->V2.InquiryUnitSerialNumber[DeviceIndex] = NULL;
-	      kfree(PhysicalDeviceInfo);
-	      kfree(InquiryUnitSerialNumber);
-	    }
-	  Controller->V2.NeedPhysicalDeviceInformation = false;
-	}
-      else if (IOCTLOpcode == DAC960_V2_GetLogicalDeviceInfoValid &&
-	       CommandStatus == DAC960_V2_NormalCompletion)
-	{
-	  DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
-	    Controller->V2.NewLogicalDeviceInformation;
-	  unsigned short LogicalDeviceNumber =
-	    NewLogicalDeviceInfo->LogicalDeviceNumber;
-	  DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
-	    Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber];
-	  if (LogicalDeviceInfo == NULL)
-	    {
-	      DAC960_V2_PhysicalDevice_T PhysicalDevice;
-	      PhysicalDevice.Controller = 0;
-	      PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
-	      PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
-	      PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
-	      Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
-		PhysicalDevice;
-	      LogicalDeviceInfo = kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T),
-					  GFP_ATOMIC);
-	      Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
-		LogicalDeviceInfo;
-	      DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
-			      "Now Exists%s\n", Controller,
-			      LogicalDeviceNumber,
-			      Controller->ControllerNumber,
-			      LogicalDeviceNumber,
-			      (LogicalDeviceInfo != NULL
-			       ? "" : " - Allocation Failed"));
-	      if (LogicalDeviceInfo != NULL)
-		{
-		  memset(LogicalDeviceInfo, 0,
-			 sizeof(DAC960_V2_LogicalDeviceInfo_T));
-		  DAC960_ComputeGenericDiskInfo(Controller);
-		}
-	    }
-	  if (LogicalDeviceInfo != NULL)
-	    {
-	      unsigned long LogicalDeviceSize =
-		NewLogicalDeviceInfo->ConfigurableDeviceSize;
-	      if (NewLogicalDeviceInfo->LogicalDeviceState !=
-		  LogicalDeviceInfo->LogicalDeviceState)
-		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
-				"is now %s\n", Controller,
-				LogicalDeviceNumber,
-				Controller->ControllerNumber,
-				LogicalDeviceNumber,
-				(NewLogicalDeviceInfo->LogicalDeviceState
-				 == DAC960_V2_LogicalDevice_Online
-				 ? "ONLINE"
-				 : NewLogicalDeviceInfo->LogicalDeviceState
-				   == DAC960_V2_LogicalDevice_Critical
-				   ? "CRITICAL" : "OFFLINE"));
-	      if ((NewLogicalDeviceInfo->SoftErrors !=
-		   LogicalDeviceInfo->SoftErrors) ||
-		  (NewLogicalDeviceInfo->CommandsFailed !=
-		   LogicalDeviceInfo->CommandsFailed) ||
-		  (NewLogicalDeviceInfo->DeferredWriteErrors !=
-		   LogicalDeviceInfo->DeferredWriteErrors))
-		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) Errors: "
-				"Soft = %d, Failed = %d, Deferred Write = %d\n",
-				Controller, LogicalDeviceNumber,
-				Controller->ControllerNumber,
-				LogicalDeviceNumber,
-				NewLogicalDeviceInfo->SoftErrors,
-				NewLogicalDeviceInfo->CommandsFailed,
-				NewLogicalDeviceInfo->DeferredWriteErrors);
-	      if (NewLogicalDeviceInfo->ConsistencyCheckInProgress)
-		DAC960_V2_ReportProgress(Controller,
-					 "Consistency Check",
-					 LogicalDeviceNumber,
-					 NewLogicalDeviceInfo
-					 ->ConsistencyCheckBlockNumber,
-					 LogicalDeviceSize);
-	      else if (NewLogicalDeviceInfo->RebuildInProgress)
-		DAC960_V2_ReportProgress(Controller,
-					 "Rebuild",
-					 LogicalDeviceNumber,
-					 NewLogicalDeviceInfo
-					 ->RebuildBlockNumber,
-					 LogicalDeviceSize);
-	      else if (NewLogicalDeviceInfo->BackgroundInitializationInProgress)
-		DAC960_V2_ReportProgress(Controller,
-					 "Background Initialization",
-					 LogicalDeviceNumber,
-					 NewLogicalDeviceInfo
-					 ->BackgroundInitializationBlockNumber,
-					 LogicalDeviceSize);
-	      else if (NewLogicalDeviceInfo->ForegroundInitializationInProgress)
-		DAC960_V2_ReportProgress(Controller,
-					 "Foreground Initialization",
-					 LogicalDeviceNumber,
-					 NewLogicalDeviceInfo
-					 ->ForegroundInitializationBlockNumber,
-					 LogicalDeviceSize);
-	      else if (NewLogicalDeviceInfo->DataMigrationInProgress)
-		DAC960_V2_ReportProgress(Controller,
-					 "Data Migration",
-					 LogicalDeviceNumber,
-					 NewLogicalDeviceInfo
-					 ->DataMigrationBlockNumber,
-					 LogicalDeviceSize);
-	      else if (NewLogicalDeviceInfo->PatrolOperationInProgress)
-		DAC960_V2_ReportProgress(Controller,
-					 "Patrol Operation",
-					 LogicalDeviceNumber,
-					 NewLogicalDeviceInfo
-					 ->PatrolOperationBlockNumber,
-					 LogicalDeviceSize);
-	      if (LogicalDeviceInfo->BackgroundInitializationInProgress &&
-		  !NewLogicalDeviceInfo->BackgroundInitializationInProgress)
-		DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) "
-				"Background Initialization %s\n",
-				Controller,
-				LogicalDeviceNumber,
-				Controller->ControllerNumber,
-				LogicalDeviceNumber,
-				(NewLogicalDeviceInfo->LogicalDeviceControl
-						      .LogicalDeviceInitialized
-				 ? "Completed" : "Failed"));
-	      memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
-		     sizeof(DAC960_V2_LogicalDeviceInfo_T));
-	    }
-	  Controller->V2.LogicalDriveFoundDuringScan
-			 [LogicalDeviceNumber] = true;
-	  NewLogicalDeviceInfo->LogicalDeviceNumber++;
-	}
-      else if (IOCTLOpcode == DAC960_V2_GetLogicalDeviceInfoValid)
-	{
-	  int LogicalDriveNumber;
-	  for (LogicalDriveNumber = 0;
-	       LogicalDriveNumber < DAC960_MaxLogicalDrives;
-	       LogicalDriveNumber++)
-	    {
-	      DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
-		Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
-	      if (LogicalDeviceInfo == NULL ||
-		  Controller->V2.LogicalDriveFoundDuringScan
-				 [LogicalDriveNumber])
-		continue;
-	      DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
-			      "No Longer Exists\n", Controller,
-			      LogicalDriveNumber,
-			      Controller->ControllerNumber,
-			      LogicalDriveNumber);
-	      Controller->V2.LogicalDeviceInformation
-			     [LogicalDriveNumber] = NULL;
-	      kfree(LogicalDeviceInfo);
-	      Controller->LogicalDriveInitiallyAccessible
-			  [LogicalDriveNumber] = false;
-	      DAC960_ComputeGenericDiskInfo(Controller);
-	    }
-	  Controller->V2.NeedLogicalDeviceInformation = false;
-	}
-      else if (CommandOpcode == DAC960_V2_SCSI_10_Passthru)
-        {
-	    DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
-		Controller->V2.InquiryUnitSerialNumber[Controller->V2.PhysicalDeviceIndex - 1];
-
-	    if (CommandStatus != DAC960_V2_NormalCompletion) {
-		memset(InquiryUnitSerialNumber,
-			0, sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
-		InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
-	    } else
-	  	memcpy(InquiryUnitSerialNumber,
-			Controller->V2.NewInquiryUnitSerialNumber,
-			sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
-
-	     Controller->V2.NeedDeviceSerialNumberInformation = false;
-        }
-
-      if (Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
-	  - Controller->V2.NextEventSequenceNumber > 0)
-	{
-	  CommandMailbox->GetEvent.CommandOpcode = DAC960_V2_IOCTL;
-	  CommandMailbox->GetEvent.DataTransferSize = sizeof(DAC960_V2_Event_T);
-	  CommandMailbox->GetEvent.EventSequenceNumberHigh16 =
-	    Controller->V2.NextEventSequenceNumber >> 16;
-	  CommandMailbox->GetEvent.ControllerNumber = 0;
-	  CommandMailbox->GetEvent.IOCTL_Opcode =
-	    DAC960_V2_GetEvent;
-	  CommandMailbox->GetEvent.EventSequenceNumberLow16 =
-	    Controller->V2.NextEventSequenceNumber & 0xFFFF;
-	  CommandMailbox->GetEvent.DataTransferMemoryAddress
-				  .ScatterGatherSegments[0]
-				  .SegmentDataPointer =
-	    Controller->V2.EventDMA;
-	  CommandMailbox->GetEvent.DataTransferMemoryAddress
-				  .ScatterGatherSegments[0]
-				  .SegmentByteCount =
-	    CommandMailbox->GetEvent.DataTransferSize;
-	  DAC960_QueueCommand(Command);
-	  return;
-	}
-      if (Controller->V2.NeedPhysicalDeviceInformation)
-	{
-	  if (Controller->V2.NeedDeviceSerialNumberInformation)
-	    {
-	      DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
-                Controller->V2.NewInquiryUnitSerialNumber;
-	      InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
-
-	      DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
-			Controller->V2.NewPhysicalDeviceInformation->Channel,
-			Controller->V2.NewPhysicalDeviceInformation->TargetID,
-		Controller->V2.NewPhysicalDeviceInformation->LogicalUnit - 1);
-
-
-	      DAC960_QueueCommand(Command);
-	      return;
-	    }
-	  if (Controller->V2.StartPhysicalDeviceInformationScan)
-	    {
-	      Controller->V2.PhysicalDeviceIndex = 0;
-	      Controller->V2.NewPhysicalDeviceInformation->Channel = 0;
-	      Controller->V2.NewPhysicalDeviceInformation->TargetID = 0;
-	      Controller->V2.NewPhysicalDeviceInformation->LogicalUnit = 0;
-	      Controller->V2.StartPhysicalDeviceInformationScan = false;
-	    }
-	  CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
-	  CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
-	    sizeof(DAC960_V2_PhysicalDeviceInfo_T);
-	  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit =
-	    Controller->V2.NewPhysicalDeviceInformation->LogicalUnit;
-	  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID =
-	    Controller->V2.NewPhysicalDeviceInformation->TargetID;
-	  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel =
-	    Controller->V2.NewPhysicalDeviceInformation->Channel;
-	  CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
-	    DAC960_V2_GetPhysicalDeviceInfoValid;
-	  CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
-					    .ScatterGatherSegments[0]
-					    .SegmentDataPointer =
-	    Controller->V2.NewPhysicalDeviceInformationDMA;
-	  CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
-					    .ScatterGatherSegments[0]
-					    .SegmentByteCount =
-	    CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
-	  DAC960_QueueCommand(Command);
-	  return;
-	}
-      if (Controller->V2.NeedLogicalDeviceInformation)
-	{
-	  if (Controller->V2.StartLogicalDeviceInformationScan)
-	    {
-	      int LogicalDriveNumber;
-	      for (LogicalDriveNumber = 0;
-		   LogicalDriveNumber < DAC960_MaxLogicalDrives;
-		   LogicalDriveNumber++)
-		Controller->V2.LogicalDriveFoundDuringScan
-			       [LogicalDriveNumber] = false;
-	      Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber = 0;
-	      Controller->V2.StartLogicalDeviceInformationScan = false;
-	    }
-	  CommandMailbox->LogicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
-	  CommandMailbox->LogicalDeviceInfo.DataTransferSize =
-	    sizeof(DAC960_V2_LogicalDeviceInfo_T);
-	  CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
-	    Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber;
-	  CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
-	    DAC960_V2_GetLogicalDeviceInfoValid;
-	  CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
-					   .ScatterGatherSegments[0]
-					   .SegmentDataPointer =
-	    Controller->V2.NewLogicalDeviceInformationDMA;
-	  CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
-					   .ScatterGatherSegments[0]
-					   .SegmentByteCount =
-	    CommandMailbox->LogicalDeviceInfo.DataTransferSize;
-	  DAC960_QueueCommand(Command);
-	  return;
-	}
-      Controller->MonitoringTimerCount++;
-      Controller->MonitoringTimer.expires =
-	jiffies + DAC960_HealthStatusMonitoringInterval;
-      	add_timer(&Controller->MonitoringTimer);
-    }
-  if (CommandType == DAC960_ImmediateCommand)
-    {
-      complete(Command->Completion);
-      Command->Completion = NULL;
-      return;
-    }
-  if (CommandType == DAC960_QueuedCommand)
-    {
-      DAC960_V2_KernelCommand_T *KernelCommand = Command->V2.KernelCommand;
-      KernelCommand->CommandStatus = CommandStatus;
-      KernelCommand->RequestSenseLength = Command->V2.RequestSenseLength;
-      KernelCommand->DataTransferLength = Command->V2.DataTransferResidue;
-      Command->V2.KernelCommand = NULL;
-      DAC960_DeallocateCommand(Command);
-      KernelCommand->CompletionFunction(KernelCommand);
-      return;
-    }
-  /*
-    Queue a Status Monitoring Command to the Controller using the just
-    completed Command if one was deferred previously due to lack of a
-    free Command when the Monitoring Timer Function was called.
-  */
-  if (Controller->MonitoringCommandDeferred)
-    {
-      Controller->MonitoringCommandDeferred = false;
-      DAC960_V2_QueueMonitoringCommand(Command);
-      return;
-    }
-  /*
-    Deallocate the Command.
-  */
-  DAC960_DeallocateCommand(Command);
-  /*
-    Wake up any processes waiting on a free Command.
-  */
-  wake_up(&Controller->CommandWaitQueue);
-}
-
-/*
-  DAC960_GEM_InterruptHandler handles hardware interrupts from DAC960 GEM Series
-  Controllers.
-*/
-
-static irqreturn_t DAC960_GEM_InterruptHandler(int IRQ_Channel,
-				       void *DeviceIdentifier)
-{
-  DAC960_Controller_T *Controller = DeviceIdentifier;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V2_StatusMailbox_T *NextStatusMailbox;
-  unsigned long flags;
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  DAC960_GEM_AcknowledgeInterrupt(ControllerBaseAddress);
-  NextStatusMailbox = Controller->V2.NextStatusMailbox;
-  while (NextStatusMailbox->Fields.CommandIdentifier > 0)
-    {
-       DAC960_V2_CommandIdentifier_T CommandIdentifier =
-           NextStatusMailbox->Fields.CommandIdentifier;
-       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
-       Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
-       Command->V2.RequestSenseLength =
-           NextStatusMailbox->Fields.RequestSenseLength;
-       Command->V2.DataTransferResidue =
-           NextStatusMailbox->Fields.DataTransferResidue;
-       NextStatusMailbox->Words[0] = 0;
-       if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
-           NextStatusMailbox = Controller->V2.FirstStatusMailbox;
-       DAC960_V2_ProcessCompletedCommand(Command);
-    }
-  Controller->V2.NextStatusMailbox = NextStatusMailbox;
-  /*
-    Attempt to remove additional I/O Requests from the Controller's
-    I/O Request Queue and queue them to the Controller.
-  */
-  DAC960_ProcessRequest(Controller);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  return IRQ_HANDLED;
-}
-
-/*
-  DAC960_BA_InterruptHandler handles hardware interrupts from DAC960 BA Series
-  Controllers.
-*/
-
-static irqreturn_t DAC960_BA_InterruptHandler(int IRQ_Channel,
-				       void *DeviceIdentifier)
-{
-  DAC960_Controller_T *Controller = DeviceIdentifier;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V2_StatusMailbox_T *NextStatusMailbox;
-  unsigned long flags;
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  DAC960_BA_AcknowledgeInterrupt(ControllerBaseAddress);
-  NextStatusMailbox = Controller->V2.NextStatusMailbox;
-  while (NextStatusMailbox->Fields.CommandIdentifier > 0)
-    {
-      DAC960_V2_CommandIdentifier_T CommandIdentifier =
-	NextStatusMailbox->Fields.CommandIdentifier;
-      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
-      Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
-      Command->V2.RequestSenseLength =
-	NextStatusMailbox->Fields.RequestSenseLength;
-      Command->V2.DataTransferResidue =
-	NextStatusMailbox->Fields.DataTransferResidue;
-      NextStatusMailbox->Words[0] = 0;
-      if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
-	NextStatusMailbox = Controller->V2.FirstStatusMailbox;
-      DAC960_V2_ProcessCompletedCommand(Command);
-    }
-  Controller->V2.NextStatusMailbox = NextStatusMailbox;
-  /*
-    Attempt to remove additional I/O Requests from the Controller's
-    I/O Request Queue and queue them to the Controller.
-  */
-  DAC960_ProcessRequest(Controller);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  return IRQ_HANDLED;
-}
-
-
-/*
-  DAC960_LP_InterruptHandler handles hardware interrupts from DAC960 LP Series
-  Controllers.
-*/
-
-static irqreturn_t DAC960_LP_InterruptHandler(int IRQ_Channel,
-				       void *DeviceIdentifier)
-{
-  DAC960_Controller_T *Controller = DeviceIdentifier;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V2_StatusMailbox_T *NextStatusMailbox;
-  unsigned long flags;
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  DAC960_LP_AcknowledgeInterrupt(ControllerBaseAddress);
-  NextStatusMailbox = Controller->V2.NextStatusMailbox;
-  while (NextStatusMailbox->Fields.CommandIdentifier > 0)
-    {
-      DAC960_V2_CommandIdentifier_T CommandIdentifier =
-	NextStatusMailbox->Fields.CommandIdentifier;
-      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
-      Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
-      Command->V2.RequestSenseLength =
-	NextStatusMailbox->Fields.RequestSenseLength;
-      Command->V2.DataTransferResidue =
-	NextStatusMailbox->Fields.DataTransferResidue;
-      NextStatusMailbox->Words[0] = 0;
-      if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
-	NextStatusMailbox = Controller->V2.FirstStatusMailbox;
-      DAC960_V2_ProcessCompletedCommand(Command);
-    }
-  Controller->V2.NextStatusMailbox = NextStatusMailbox;
-  /*
-    Attempt to remove additional I/O Requests from the Controller's
-    I/O Request Queue and queue them to the Controller.
-  */
-  DAC960_ProcessRequest(Controller);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  return IRQ_HANDLED;
-}
-
-
-/*
-  DAC960_LA_InterruptHandler handles hardware interrupts from DAC960 LA Series
-  Controllers.
-*/
-
-static irqreturn_t DAC960_LA_InterruptHandler(int IRQ_Channel,
-				       void *DeviceIdentifier)
-{
-  DAC960_Controller_T *Controller = DeviceIdentifier;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V1_StatusMailbox_T *NextStatusMailbox;
-  unsigned long flags;
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  DAC960_LA_AcknowledgeInterrupt(ControllerBaseAddress);
-  NextStatusMailbox = Controller->V1.NextStatusMailbox;
-  while (NextStatusMailbox->Fields.Valid)
-    {
-      DAC960_V1_CommandIdentifier_T CommandIdentifier =
-	NextStatusMailbox->Fields.CommandIdentifier;
-      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
-      Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
-      NextStatusMailbox->Word = 0;
-      if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
-	NextStatusMailbox = Controller->V1.FirstStatusMailbox;
-      DAC960_V1_ProcessCompletedCommand(Command);
-    }
-  Controller->V1.NextStatusMailbox = NextStatusMailbox;
-  /*
-    Attempt to remove additional I/O Requests from the Controller's
-    I/O Request Queue and queue them to the Controller.
-  */
-  DAC960_ProcessRequest(Controller);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  return IRQ_HANDLED;
-}
-
-
-/*
-  DAC960_PG_InterruptHandler handles hardware interrupts from DAC960 PG Series
-  Controllers.
-*/
-
-static irqreturn_t DAC960_PG_InterruptHandler(int IRQ_Channel,
-				       void *DeviceIdentifier)
-{
-  DAC960_Controller_T *Controller = DeviceIdentifier;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  DAC960_V1_StatusMailbox_T *NextStatusMailbox;
-  unsigned long flags;
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  DAC960_PG_AcknowledgeInterrupt(ControllerBaseAddress);
-  NextStatusMailbox = Controller->V1.NextStatusMailbox;
-  while (NextStatusMailbox->Fields.Valid)
-    {
-      DAC960_V1_CommandIdentifier_T CommandIdentifier =
-	NextStatusMailbox->Fields.CommandIdentifier;
-      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
-      Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
-      NextStatusMailbox->Word = 0;
-      if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
-	NextStatusMailbox = Controller->V1.FirstStatusMailbox;
-      DAC960_V1_ProcessCompletedCommand(Command);
-    }
-  Controller->V1.NextStatusMailbox = NextStatusMailbox;
-  /*
-    Attempt to remove additional I/O Requests from the Controller's
-    I/O Request Queue and queue them to the Controller.
-  */
-  DAC960_ProcessRequest(Controller);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  return IRQ_HANDLED;
-}
-
-
-/*
-  DAC960_PD_InterruptHandler handles hardware interrupts from DAC960 PD Series
-  Controllers.
-*/
-
-static irqreturn_t DAC960_PD_InterruptHandler(int IRQ_Channel,
-				       void *DeviceIdentifier)
-{
-  DAC960_Controller_T *Controller = DeviceIdentifier;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  unsigned long flags;
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
-    {
-      DAC960_V1_CommandIdentifier_T CommandIdentifier =
-	DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
-      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
-      Command->V1.CommandStatus =
-	DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
-      DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
-      DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
-      DAC960_V1_ProcessCompletedCommand(Command);
-    }
-  /*
-    Attempt to remove additional I/O Requests from the Controller's
-    I/O Request Queue and queue them to the Controller.
-  */
-  DAC960_ProcessRequest(Controller);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  return IRQ_HANDLED;
-}
-
-
-/*
-  DAC960_P_InterruptHandler handles hardware interrupts from DAC960 P Series
-  Controllers.
-
-  Translations of DAC960_V1_Enquiry and DAC960_V1_GetDeviceState rely
-  on the data having been placed into DAC960_Controller_T, rather than
-  an arbitrary buffer.
-*/
-
-static irqreturn_t DAC960_P_InterruptHandler(int IRQ_Channel,
-				      void *DeviceIdentifier)
-{
-  DAC960_Controller_T *Controller = DeviceIdentifier;
-  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
-  unsigned long flags;
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
-    {
-      DAC960_V1_CommandIdentifier_T CommandIdentifier =
-	DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
-      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
-      DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-      DAC960_V1_CommandOpcode_T CommandOpcode =
-	CommandMailbox->Common.CommandOpcode;
-      Command->V1.CommandStatus =
-	DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
-      DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
-      DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
-      switch (CommandOpcode)
-	{
-	case DAC960_V1_Enquiry_Old:
-	  Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Enquiry;
-	  DAC960_P_To_PD_TranslateEnquiry(Controller->V1.NewEnquiry);
-	  break;
-	case DAC960_V1_GetDeviceState_Old:
-	  Command->V1.CommandMailbox.Common.CommandOpcode =
-	    					DAC960_V1_GetDeviceState;
-	  DAC960_P_To_PD_TranslateDeviceState(Controller->V1.NewDeviceState);
-	  break;
-	case DAC960_V1_Read_Old:
-	  Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Read;
-	  DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
-	  break;
-	case DAC960_V1_Write_Old:
-	  Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Write;
-	  DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
-	  break;
-	case DAC960_V1_ReadWithScatterGather_Old:
-	  Command->V1.CommandMailbox.Common.CommandOpcode =
-	    DAC960_V1_ReadWithScatterGather;
-	  DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
-	  break;
-	case DAC960_V1_WriteWithScatterGather_Old:
-	  Command->V1.CommandMailbox.Common.CommandOpcode =
-	    DAC960_V1_WriteWithScatterGather;
-	  DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
-	  break;
-	default:
-	  break;
-	}
-      DAC960_V1_ProcessCompletedCommand(Command);
-    }
-  /*
-    Attempt to remove additional I/O Requests from the Controller's
-    I/O Request Queue and queue them to the Controller.
-  */
-  DAC960_ProcessRequest(Controller);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  return IRQ_HANDLED;
-}
-
-
-/*
-  DAC960_V1_QueueMonitoringCommand queues a Monitoring Command to DAC960 V1
-  Firmware Controllers.
-*/
-
-static void DAC960_V1_QueueMonitoringCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  DAC960_V1_ClearCommand(Command);
-  Command->CommandType = DAC960_MonitoringCommand;
-  CommandMailbox->Type3.CommandOpcode = DAC960_V1_Enquiry;
-  CommandMailbox->Type3.BusAddress = Controller->V1.NewEnquiryDMA;
-  DAC960_QueueCommand(Command);
-}
-
-
-/*
-  DAC960_V2_QueueMonitoringCommand queues a Monitoring Command to DAC960 V2
-  Firmware Controllers.
-*/
-
-static void DAC960_V2_QueueMonitoringCommand(DAC960_Command_T *Command)
-{
-  DAC960_Controller_T *Controller = Command->Controller;
-  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
-  DAC960_V2_ClearCommand(Command);
-  Command->CommandType = DAC960_MonitoringCommand;
-  CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
-  CommandMailbox->ControllerInfo.CommandControlBits
-				.DataTransferControllerToHost = true;
-  CommandMailbox->ControllerInfo.CommandControlBits
-				.NoAutoRequestSense = true;
-  CommandMailbox->ControllerInfo.DataTransferSize =
-    sizeof(DAC960_V2_ControllerInfo_T);
-  CommandMailbox->ControllerInfo.ControllerNumber = 0;
-  CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
-  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
-				.ScatterGatherSegments[0]
-				.SegmentDataPointer =
-    Controller->V2.NewControllerInformationDMA;
-  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
-				.ScatterGatherSegments[0]
-				.SegmentByteCount =
-    CommandMailbox->ControllerInfo.DataTransferSize;
-  DAC960_QueueCommand(Command);
-}
-
-
-/*
-  DAC960_MonitoringTimerFunction is the timer function for monitoring
-  the status of DAC960 Controllers.
-*/
-
-static void DAC960_MonitoringTimerFunction(struct timer_list *t)
-{
-  DAC960_Controller_T *Controller = from_timer(Controller, t, MonitoringTimer);
-  DAC960_Command_T *Command;
-  unsigned long flags;
-
-  if (Controller->FirmwareType == DAC960_V1_Controller)
-    {
-      spin_lock_irqsave(&Controller->queue_lock, flags);
-      /*
-	Queue a Status Monitoring Command to Controller.
-      */
-      Command = DAC960_AllocateCommand(Controller);
-      if (Command != NULL)
-	DAC960_V1_QueueMonitoringCommand(Command);
-      else Controller->MonitoringCommandDeferred = true;
-      spin_unlock_irqrestore(&Controller->queue_lock, flags);
-    }
-  else
-    {
-      DAC960_V2_ControllerInfo_T *ControllerInfo =
-	&Controller->V2.ControllerInformation;
-      unsigned int StatusChangeCounter =
-	Controller->V2.HealthStatusBuffer->StatusChangeCounter;
-      bool ForceMonitoringCommand = false;
-      if (time_after(jiffies, Controller->SecondaryMonitoringTime
-	  + DAC960_SecondaryMonitoringInterval))
-	{
-	  int LogicalDriveNumber;
-	  for (LogicalDriveNumber = 0;
-	       LogicalDriveNumber < DAC960_MaxLogicalDrives;
-	       LogicalDriveNumber++)
-	    {
-	      DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
-		Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
-	      if (LogicalDeviceInfo == NULL) continue;
-	      if (!LogicalDeviceInfo->LogicalDeviceControl
-				     .LogicalDeviceInitialized)
-		{
-		  ForceMonitoringCommand = true;
-		  break;
-		}
-	    }
-	  Controller->SecondaryMonitoringTime = jiffies;
-	}
-      if (StatusChangeCounter == Controller->V2.StatusChangeCounter &&
-	  Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
-	  == Controller->V2.NextEventSequenceNumber &&
-	  (ControllerInfo->BackgroundInitializationsActive +
-	   ControllerInfo->LogicalDeviceInitializationsActive +
-	   ControllerInfo->PhysicalDeviceInitializationsActive +
-	   ControllerInfo->ConsistencyChecksActive +
-	   ControllerInfo->RebuildsActive +
-	   ControllerInfo->OnlineExpansionsActive == 0 ||
-	   time_before(jiffies, Controller->PrimaryMonitoringTime
-	   + DAC960_MonitoringTimerInterval)) &&
-	  !ForceMonitoringCommand)
-	{
-	  Controller->MonitoringTimer.expires =
-	    jiffies + DAC960_HealthStatusMonitoringInterval;
-	    add_timer(&Controller->MonitoringTimer);
-	  return;
-	}
-      Controller->V2.StatusChangeCounter = StatusChangeCounter;
-      Controller->PrimaryMonitoringTime = jiffies;
-
-      spin_lock_irqsave(&Controller->queue_lock, flags);
-      /*
-	Queue a Status Monitoring Command to Controller.
-      */
-      Command = DAC960_AllocateCommand(Controller);
-      if (Command != NULL)
-	DAC960_V2_QueueMonitoringCommand(Command);
-      else Controller->MonitoringCommandDeferred = true;
-      spin_unlock_irqrestore(&Controller->queue_lock, flags);
-      /*
-	Wake up any processes waiting on a Health Status Buffer change.
-      */
-      wake_up(&Controller->HealthStatusWaitQueue);
-    }
-}
-
-/*
-  DAC960_CheckStatusBuffer verifies that there is room to hold ByteCount
-  additional bytes in the Combined Status Buffer and grows the buffer if
-  necessary.  It returns true if there is enough room and false otherwise.
-*/
-
-static bool DAC960_CheckStatusBuffer(DAC960_Controller_T *Controller,
-					unsigned int ByteCount)
-{
-  unsigned char *NewStatusBuffer;
-  if (Controller->InitialStatusLength + 1 +
-      Controller->CurrentStatusLength + ByteCount + 1 <=
-      Controller->CombinedStatusBufferLength)
-    return true;
-  if (Controller->CombinedStatusBufferLength == 0)
-    {
-      unsigned int NewStatusBufferLength = DAC960_InitialStatusBufferSize;
-      while (NewStatusBufferLength < ByteCount)
-	NewStatusBufferLength *= 2;
-      Controller->CombinedStatusBuffer = kmalloc(NewStatusBufferLength,
-						  GFP_ATOMIC);
-      if (Controller->CombinedStatusBuffer == NULL) return false;
-      Controller->CombinedStatusBufferLength = NewStatusBufferLength;
-      return true;
-    }
-  NewStatusBuffer = kmalloc_array(2, Controller->CombinedStatusBufferLength,
-                                  GFP_ATOMIC);
-  if (NewStatusBuffer == NULL)
-    {
-      DAC960_Warning("Unable to expand Combined Status Buffer - Truncating\n",
-		     Controller);
-      return false;
-    }
-  memcpy(NewStatusBuffer, Controller->CombinedStatusBuffer,
-	 Controller->CombinedStatusBufferLength);
-  kfree(Controller->CombinedStatusBuffer);
-  Controller->CombinedStatusBuffer = NewStatusBuffer;
-  Controller->CombinedStatusBufferLength *= 2;
-  Controller->CurrentStatusBuffer =
-    &NewStatusBuffer[Controller->InitialStatusLength + 1];
-  return true;
-}
-
-
-/*
-  DAC960_Message prints Driver Messages.
-*/
-
-static void DAC960_Message(DAC960_MessageLevel_T MessageLevel,
-			   unsigned char *Format,
-			   DAC960_Controller_T *Controller,
-			   ...)
-{
-  static unsigned char Buffer[DAC960_LineBufferSize];
-  static bool BeginningOfLine = true;
-  va_list Arguments;
-  int Length = 0;
-  va_start(Arguments, Controller);
-  Length = vsprintf(Buffer, Format, Arguments);
-  va_end(Arguments);
-  if (Controller == NULL)
-    printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
-	   DAC960_ControllerCount, Buffer);
-  else if (MessageLevel == DAC960_AnnounceLevel ||
-	   MessageLevel == DAC960_InfoLevel)
-    {
-      if (!Controller->ControllerInitialized)
-	{
-	  if (DAC960_CheckStatusBuffer(Controller, Length))
-	    {
-	      strcpy(&Controller->CombinedStatusBuffer
-				  [Controller->InitialStatusLength],
-		     Buffer);
-	      Controller->InitialStatusLength += Length;
-	      Controller->CurrentStatusBuffer =
-		&Controller->CombinedStatusBuffer
-			     [Controller->InitialStatusLength + 1];
-	    }
-	  if (MessageLevel == DAC960_AnnounceLevel)
-	    {
-	      static int AnnouncementLines = 0;
-	      if (++AnnouncementLines <= 2)
-		printk("%sDAC960: %s", DAC960_MessageLevelMap[MessageLevel],
-		       Buffer);
-	    }
-	  else
-	    {
-	      if (BeginningOfLine)
-		{
-		  if (Buffer[0] != '\n' || Length > 1)
-		    printk("%sDAC960#%d: %s",
-			   DAC960_MessageLevelMap[MessageLevel],
-			   Controller->ControllerNumber, Buffer);
-		}
-	      else printk("%s", Buffer);
-	    }
-	}
-      else if (DAC960_CheckStatusBuffer(Controller, Length))
-	{
-	  strcpy(&Controller->CurrentStatusBuffer[
-		    Controller->CurrentStatusLength], Buffer);
-	  Controller->CurrentStatusLength += Length;
-	}
-    }
-  else if (MessageLevel == DAC960_ProgressLevel)
-    {
-      strcpy(Controller->ProgressBuffer, Buffer);
-      Controller->ProgressBufferLength = Length;
-      if (Controller->EphemeralProgressMessage)
-	{
-	  if (time_after_eq(jiffies, Controller->LastProgressReportTime
-	      + DAC960_ProgressReportingInterval))
-	    {
-	      printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
-		     Controller->ControllerNumber, Buffer);
-	      Controller->LastProgressReportTime = jiffies;
-	    }
-	}
-      else printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
-		  Controller->ControllerNumber, Buffer);
-    }
-  else if (MessageLevel == DAC960_UserCriticalLevel)
-    {
-      strcpy(&Controller->UserStatusBuffer[Controller->UserStatusLength],
-	     Buffer);
-      Controller->UserStatusLength += Length;
-      if (Buffer[0] != '\n' || Length > 1)
-	printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
-	       Controller->ControllerNumber, Buffer);
-    }
-  else
-    {
-      if (BeginningOfLine)
-	printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
-	       Controller->ControllerNumber, Buffer);
-      else printk("%s", Buffer);
-    }
-  BeginningOfLine = (Buffer[Length-1] == '\n');
-}
-
-
-/*
-  DAC960_ParsePhysicalDevice parses spaces followed by a Physical Device
-  Channel:TargetID specification from a User Command string.  It updates
-  Channel and TargetID and returns true on success and false on failure.
-*/
-
-static bool DAC960_ParsePhysicalDevice(DAC960_Controller_T *Controller,
-					  char *UserCommandString,
-					  unsigned char *Channel,
-					  unsigned char *TargetID)
-{
-  char *NewUserCommandString = UserCommandString;
-  unsigned long XChannel, XTargetID;
-  while (*UserCommandString == ' ') UserCommandString++;
-  if (UserCommandString == NewUserCommandString)
-    return false;
-  XChannel = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
-  if (NewUserCommandString == UserCommandString ||
-      *NewUserCommandString != ':' ||
-      XChannel >= Controller->Channels)
-    return false;
-  UserCommandString = ++NewUserCommandString;
-  XTargetID = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
-  if (NewUserCommandString == UserCommandString ||
-      *NewUserCommandString != '\0' ||
-      XTargetID >= Controller->Targets)
-    return false;
-  *Channel = XChannel;
-  *TargetID = XTargetID;
-  return true;
-}
-
-
-/*
-  DAC960_ParseLogicalDrive parses spaces followed by a Logical Drive Number
-  specification from a User Command string.  It updates LogicalDriveNumber and
-  returns true on success and false on failure.
-*/
-
-static bool DAC960_ParseLogicalDrive(DAC960_Controller_T *Controller,
-					char *UserCommandString,
-					unsigned char *LogicalDriveNumber)
-{
-  char *NewUserCommandString = UserCommandString;
-  unsigned long XLogicalDriveNumber;
-  while (*UserCommandString == ' ') UserCommandString++;
-  if (UserCommandString == NewUserCommandString)
-    return false;
-  XLogicalDriveNumber =
-    simple_strtoul(UserCommandString, &NewUserCommandString, 10);
-  if (NewUserCommandString == UserCommandString ||
-      *NewUserCommandString != '\0' ||
-      XLogicalDriveNumber > DAC960_MaxLogicalDrives - 1)
-    return false;
-  *LogicalDriveNumber = XLogicalDriveNumber;
-  return true;
-}
-
-
-/*
-  DAC960_V1_SetDeviceState sets the Device State for a Physical Device for
-  DAC960 V1 Firmware Controllers.
-*/
-
-static void DAC960_V1_SetDeviceState(DAC960_Controller_T *Controller,
-				     DAC960_Command_T *Command,
-				     unsigned char Channel,
-				     unsigned char TargetID,
-				     DAC960_V1_PhysicalDeviceState_T
-				       DeviceState,
-				     const unsigned char *DeviceStateString)
-{
-  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
-  CommandMailbox->Type3D.CommandOpcode = DAC960_V1_StartDevice;
-  CommandMailbox->Type3D.Channel = Channel;
-  CommandMailbox->Type3D.TargetID = TargetID;
-  CommandMailbox->Type3D.DeviceState = DeviceState;
-  CommandMailbox->Type3D.Modifier = 0;
-  DAC960_ExecuteCommand(Command);
-  switch (Command->V1.CommandStatus)
-    {
-    case DAC960_V1_NormalCompletion:
-      DAC960_UserCritical("%s of Physical Device %d:%d Succeeded\n", Controller,
-			  DeviceStateString, Channel, TargetID);
-      break;
-    case DAC960_V1_UnableToStartDevice:
-      DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
-			  "Unable to Start Device\n", Controller,
-			  DeviceStateString, Channel, TargetID);
-      break;
-    case DAC960_V1_NoDeviceAtAddress:
-      DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
-			  "No Device at Address\n", Controller,
-			  DeviceStateString, Channel, TargetID);
-      break;
-    case DAC960_V1_InvalidChannelOrTargetOrModifier:
-      DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
-			  "Invalid Channel or Target or Modifier\n",
-			  Controller, DeviceStateString, Channel, TargetID);
-      break;
-    case DAC960_V1_ChannelBusy:
-      DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
-			  "Channel Busy\n", Controller,
-			  DeviceStateString, Channel, TargetID);
-      break;
-    default:
-      DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
-			  "Unexpected Status %04X\n", Controller,
-			  DeviceStateString, Channel, TargetID,
-			  Command->V1.CommandStatus);
-      break;
-    }
-}
-
-
-/*
-  DAC960_V1_ExecuteUserCommand executes a User Command for DAC960 V1 Firmware
-  Controllers.
-*/
-
-static bool DAC960_V1_ExecuteUserCommand(DAC960_Controller_T *Controller,
-					    unsigned char *UserCommand)
-{
-  DAC960_Command_T *Command;
-  DAC960_V1_CommandMailbox_T *CommandMailbox;
-  unsigned long flags;
-  unsigned char Channel, TargetID, LogicalDriveNumber;
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
-    DAC960_WaitForCommand(Controller);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  Controller->UserStatusLength = 0;
-  DAC960_V1_ClearCommand(Command);
-  Command->CommandType = DAC960_ImmediateCommand;
-  CommandMailbox = &Command->V1.CommandMailbox;
-  if (strcmp(UserCommand, "flush-cache") == 0)
-    {
-      CommandMailbox->Type3.CommandOpcode = DAC960_V1_Flush;
-      DAC960_ExecuteCommand(Command);
-      DAC960_UserCritical("Cache Flush Completed\n", Controller);
-    }
-  else if (strncmp(UserCommand, "kill", 4) == 0 &&
-	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
-				      &Channel, &TargetID))
-    {
-      DAC960_V1_DeviceState_T *DeviceState =
-	&Controller->V1.DeviceState[Channel][TargetID];
-      if (DeviceState->Present &&
-	  DeviceState->DeviceType == DAC960_V1_DiskType &&
-	  DeviceState->DeviceState != DAC960_V1_Device_Dead)
-	DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
-				 DAC960_V1_Device_Dead, "Kill");
-      else DAC960_UserCritical("Kill of Physical Device %d:%d Illegal\n",
-			       Controller, Channel, TargetID);
-    }
-  else if (strncmp(UserCommand, "make-online", 11) == 0 &&
-	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
-				      &Channel, &TargetID))
-    {
-      DAC960_V1_DeviceState_T *DeviceState =
-	&Controller->V1.DeviceState[Channel][TargetID];
-      if (DeviceState->Present &&
-	  DeviceState->DeviceType == DAC960_V1_DiskType &&
-	  DeviceState->DeviceState == DAC960_V1_Device_Dead)
-	DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
-				 DAC960_V1_Device_Online, "Make Online");
-      else DAC960_UserCritical("Make Online of Physical Device %d:%d Illegal\n",
-			       Controller, Channel, TargetID);
-
-    }
-  else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
-	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
-				      &Channel, &TargetID))
-    {
-      DAC960_V1_DeviceState_T *DeviceState =
-	&Controller->V1.DeviceState[Channel][TargetID];
-      if (DeviceState->Present &&
-	  DeviceState->DeviceType == DAC960_V1_DiskType &&
-	  DeviceState->DeviceState == DAC960_V1_Device_Dead)
-	DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
-				 DAC960_V1_Device_Standby, "Make Standby");
-      else DAC960_UserCritical("Make Standby of Physical "
-			       "Device %d:%d Illegal\n",
-			       Controller, Channel, TargetID);
-    }
-  else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
-	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
-				      &Channel, &TargetID))
-    {
-      CommandMailbox->Type3D.CommandOpcode = DAC960_V1_RebuildAsync;
-      CommandMailbox->Type3D.Channel = Channel;
-      CommandMailbox->Type3D.TargetID = TargetID;
-      DAC960_ExecuteCommand(Command);
-      switch (Command->V1.CommandStatus)
-	{
-	case DAC960_V1_NormalCompletion:
-	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Initiated\n",
-			      Controller, Channel, TargetID);
-	  break;
-	case DAC960_V1_AttemptToRebuildOnlineDrive:
-	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
-			      "Attempt to Rebuild Online or "
-			      "Unresponsive Drive\n",
-			      Controller, Channel, TargetID);
-	  break;
-	case DAC960_V1_NewDiskFailedDuringRebuild:
-	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
-			      "New Disk Failed During Rebuild\n",
-			      Controller, Channel, TargetID);
-	  break;
-	case DAC960_V1_InvalidDeviceAddress:
-	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
-			      "Invalid Device Address\n",
-			      Controller, Channel, TargetID);
-	  break;
-	case DAC960_V1_RebuildOrCheckAlreadyInProgress:
-	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
-			      "Rebuild or Consistency Check Already "
-			      "in Progress\n", Controller, Channel, TargetID);
-	  break;
-	default:
-	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
-			      "Unexpected Status %04X\n", Controller,
-			      Channel, TargetID, Command->V1.CommandStatus);
-	  break;
-	}
-    }
-  else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
-	   DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
-				    &LogicalDriveNumber))
-    {
-      CommandMailbox->Type3C.CommandOpcode = DAC960_V1_CheckConsistencyAsync;
-      CommandMailbox->Type3C.LogicalDriveNumber = LogicalDriveNumber;
-      CommandMailbox->Type3C.AutoRestore = true;
-      DAC960_ExecuteCommand(Command);
-      switch (Command->V1.CommandStatus)
-	{
-	case DAC960_V1_NormalCompletion:
-	  DAC960_UserCritical("Consistency Check of Logical Drive %d "
-			      "(/dev/rd/c%dd%d) Initiated\n",
-			      Controller, LogicalDriveNumber,
-			      Controller->ControllerNumber,
-			      LogicalDriveNumber);
-	  break;
-	case DAC960_V1_DependentDiskIsDead:
-	  DAC960_UserCritical("Consistency Check of Logical Drive %d "
-			      "(/dev/rd/c%dd%d) Failed - "
-			      "Dependent Physical Device is DEAD\n",
-			      Controller, LogicalDriveNumber,
-			      Controller->ControllerNumber,
-			      LogicalDriveNumber);
-	  break;
-	case DAC960_V1_InvalidOrNonredundantLogicalDrive:
-	  DAC960_UserCritical("Consistency Check of Logical Drive %d "
-			      "(/dev/rd/c%dd%d) Failed - "
-			      "Invalid or Nonredundant Logical Drive\n",
-			      Controller, LogicalDriveNumber,
-			      Controller->ControllerNumber,
-			      LogicalDriveNumber);
-	  break;
-	case DAC960_V1_RebuildOrCheckAlreadyInProgress:
-	  DAC960_UserCritical("Consistency Check of Logical Drive %d "
-			      "(/dev/rd/c%dd%d) Failed - Rebuild or "
-			      "Consistency Check Already in Progress\n",
-			      Controller, LogicalDriveNumber,
-			      Controller->ControllerNumber,
-			      LogicalDriveNumber);
-	  break;
-	default:
-	  DAC960_UserCritical("Consistency Check of Logical Drive %d "
-			      "(/dev/rd/c%dd%d) Failed - "
-			      "Unexpected Status %04X\n",
-			      Controller, LogicalDriveNumber,
-			      Controller->ControllerNumber,
-			      LogicalDriveNumber, Command->V1.CommandStatus);
-	  break;
-	}
-    }
-  else if (strcmp(UserCommand, "cancel-rebuild") == 0 ||
-	   strcmp(UserCommand, "cancel-consistency-check") == 0)
-    {
-      /*
-        the OldRebuildRateConstant is never actually used
-        once its value is retrieved from the controller.
-       */
-      unsigned char *OldRebuildRateConstant;
-      dma_addr_t OldRebuildRateConstantDMA;
-
-      OldRebuildRateConstant = pci_alloc_consistent( Controller->PCIDevice,
-		sizeof(char), &OldRebuildRateConstantDMA);
-      if (OldRebuildRateConstant == NULL) {
-         DAC960_UserCritical("Cancellation of Rebuild or "
-			     "Consistency Check Failed - "
-			     "Out of Memory",
-                             Controller);
-	 goto failure;
-      }
-      CommandMailbox->Type3R.CommandOpcode = DAC960_V1_RebuildControl;
-      CommandMailbox->Type3R.RebuildRateConstant = 0xFF;
-      CommandMailbox->Type3R.BusAddress = OldRebuildRateConstantDMA;
-      DAC960_ExecuteCommand(Command);
-      switch (Command->V1.CommandStatus)
-	{
-	case DAC960_V1_NormalCompletion:
-	  DAC960_UserCritical("Rebuild or Consistency Check Cancelled\n",
-			      Controller);
-	  break;
-	default:
-	  DAC960_UserCritical("Cancellation of Rebuild or "
-			      "Consistency Check Failed - "
-			      "Unexpected Status %04X\n",
-			      Controller, Command->V1.CommandStatus);
-	  break;
-	}
-failure:
-  	pci_free_consistent(Controller->PCIDevice, sizeof(char),
-		OldRebuildRateConstant, OldRebuildRateConstantDMA);
-    }
-  else DAC960_UserCritical("Illegal User Command: '%s'\n",
-			   Controller, UserCommand);
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  DAC960_DeallocateCommand(Command);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  return true;
-}
-
-
-/*
-  DAC960_V2_TranslatePhysicalDevice translates a Physical Device Channel and
-  TargetID into a Logical Device.  It returns true on success and false
-  on failure.
-*/
-
-static bool DAC960_V2_TranslatePhysicalDevice(DAC960_Command_T *Command,
-						 unsigned char Channel,
-						 unsigned char TargetID,
-						 unsigned short
-						   *LogicalDeviceNumber)
-{
-  DAC960_V2_CommandMailbox_T SavedCommandMailbox, *CommandMailbox;
-  DAC960_Controller_T *Controller =  Command->Controller;
-
-  CommandMailbox = &Command->V2.CommandMailbox;
-  memcpy(&SavedCommandMailbox, CommandMailbox,
-	 sizeof(DAC960_V2_CommandMailbox_T));
-
-  CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
-  CommandMailbox->PhysicalDeviceInfo.CommandControlBits
-				    .DataTransferControllerToHost = true;
-  CommandMailbox->PhysicalDeviceInfo.CommandControlBits
-				    .NoAutoRequestSense = true;
-  CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
-    sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
-  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
-  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
-  CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
-    DAC960_V2_TranslatePhysicalToLogicalDevice;
-  CommandMailbox->Common.DataTransferMemoryAddress
-			.ScatterGatherSegments[0]
-			.SegmentDataPointer =
-    		Controller->V2.PhysicalToLogicalDeviceDMA;
-  CommandMailbox->Common.DataTransferMemoryAddress
-			.ScatterGatherSegments[0]
-			.SegmentByteCount =
-    		CommandMailbox->Common.DataTransferSize;
-
-  DAC960_ExecuteCommand(Command);
-  *LogicalDeviceNumber = Controller->V2.PhysicalToLogicalDevice->LogicalDeviceNumber;
-
-  memcpy(CommandMailbox, &SavedCommandMailbox,
-	 sizeof(DAC960_V2_CommandMailbox_T));
-  return (Command->V2.CommandStatus == DAC960_V2_NormalCompletion);
-}
-
-
-/*
-  DAC960_V2_ExecuteUserCommand executes a User Command for DAC960 V2 Firmware
-  Controllers.
-*/
-
-static bool DAC960_V2_ExecuteUserCommand(DAC960_Controller_T *Controller,
-					    unsigned char *UserCommand)
-{
-  DAC960_Command_T *Command;
-  DAC960_V2_CommandMailbox_T *CommandMailbox;
-  unsigned long flags;
-  unsigned char Channel, TargetID, LogicalDriveNumber;
-  unsigned short LogicalDeviceNumber;
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
-    DAC960_WaitForCommand(Controller);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  Controller->UserStatusLength = 0;
-  DAC960_V2_ClearCommand(Command);
-  Command->CommandType = DAC960_ImmediateCommand;
-  CommandMailbox = &Command->V2.CommandMailbox;
-  CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
-  CommandMailbox->Common.CommandControlBits.DataTransferControllerToHost = true;
-  CommandMailbox->Common.CommandControlBits.NoAutoRequestSense = true;
-  if (strcmp(UserCommand, "flush-cache") == 0)
-    {
-      CommandMailbox->DeviceOperation.IOCTL_Opcode = DAC960_V2_PauseDevice;
-      CommandMailbox->DeviceOperation.OperationDevice =
-	DAC960_V2_RAID_Controller;
-      DAC960_ExecuteCommand(Command);
-      DAC960_UserCritical("Cache Flush Completed\n", Controller);
-    }
-  else if (strncmp(UserCommand, "kill", 4) == 0 &&
-	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
-				      &Channel, &TargetID) &&
-	   DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
-					     &LogicalDeviceNumber))
-    {
-      CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
-	LogicalDeviceNumber;
-      CommandMailbox->SetDeviceState.IOCTL_Opcode =
-	DAC960_V2_SetDeviceState;
-      CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
-	DAC960_V2_Device_Dead;
-      DAC960_ExecuteCommand(Command);
-      DAC960_UserCritical("Kill of Physical Device %d:%d %s\n",
-			  Controller, Channel, TargetID,
-			  (Command->V2.CommandStatus
-			   == DAC960_V2_NormalCompletion
-			   ? "Succeeded" : "Failed"));
-    }
-  else if (strncmp(UserCommand, "make-online", 11) == 0 &&
-	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
-				      &Channel, &TargetID) &&
-	   DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
-					     &LogicalDeviceNumber))
-    {
-      CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
-	LogicalDeviceNumber;
-      CommandMailbox->SetDeviceState.IOCTL_Opcode =
-	DAC960_V2_SetDeviceState;
-      CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
-	DAC960_V2_Device_Online;
-      DAC960_ExecuteCommand(Command);
-      DAC960_UserCritical("Make Online of Physical Device %d:%d %s\n",
-			  Controller, Channel, TargetID,
-			  (Command->V2.CommandStatus
-			   == DAC960_V2_NormalCompletion
-			   ? "Succeeded" : "Failed"));
-    }
-  else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
-	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
-				      &Channel, &TargetID) &&
-	   DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
-					     &LogicalDeviceNumber))
-    {
-      CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
-	LogicalDeviceNumber;
-      CommandMailbox->SetDeviceState.IOCTL_Opcode =
-	DAC960_V2_SetDeviceState;
-      CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
-	DAC960_V2_Device_Standby;
-      DAC960_ExecuteCommand(Command);
-      DAC960_UserCritical("Make Standby of Physical Device %d:%d %s\n",
-			  Controller, Channel, TargetID,
-			  (Command->V2.CommandStatus
-			   == DAC960_V2_NormalCompletion
-			   ? "Succeeded" : "Failed"));
-    }
-  else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
-	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
-				      &Channel, &TargetID) &&
-	   DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
-					     &LogicalDeviceNumber))
-    {
-      CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
-	LogicalDeviceNumber;
-      CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
-	DAC960_V2_RebuildDeviceStart;
-      DAC960_ExecuteCommand(Command);
-      DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
-			  Controller, Channel, TargetID,
-			  (Command->V2.CommandStatus
-			   == DAC960_V2_NormalCompletion
-			   ? "Initiated" : "Not Initiated"));
-    }
-  else if (strncmp(UserCommand, "cancel-rebuild", 14) == 0 &&
-	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[14],
-				      &Channel, &TargetID) &&
-	   DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
-					     &LogicalDeviceNumber))
-    {
-      CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
-	LogicalDeviceNumber;
-      CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
-	DAC960_V2_RebuildDeviceStop;
-      DAC960_ExecuteCommand(Command);
-      DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
-			  Controller, Channel, TargetID,
-			  (Command->V2.CommandStatus
-			   == DAC960_V2_NormalCompletion
-			   ? "Cancelled" : "Not Cancelled"));
-    }
-  else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
-	   DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
-				    &LogicalDriveNumber))
-    {
-      CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
-	LogicalDriveNumber;
-      CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
-	DAC960_V2_ConsistencyCheckStart;
-      CommandMailbox->ConsistencyCheck.RestoreConsistency = true;
-      CommandMailbox->ConsistencyCheck.InitializedAreaOnly = false;
-      DAC960_ExecuteCommand(Command);
-      DAC960_UserCritical("Consistency Check of Logical Drive %d "
-			  "(/dev/rd/c%dd%d) %s\n",
-			  Controller, LogicalDriveNumber,
-			  Controller->ControllerNumber,
-			  LogicalDriveNumber,
-			  (Command->V2.CommandStatus
-			   == DAC960_V2_NormalCompletion
-			   ? "Initiated" : "Not Initiated"));
-    }
-  else if (strncmp(UserCommand, "cancel-consistency-check", 24) == 0 &&
-	   DAC960_ParseLogicalDrive(Controller, &UserCommand[24],
-				    &LogicalDriveNumber))
-    {
-      CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
-	LogicalDriveNumber;
-      CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
-	DAC960_V2_ConsistencyCheckStop;
-      DAC960_ExecuteCommand(Command);
-      DAC960_UserCritical("Consistency Check of Logical Drive %d "
-			  "(/dev/rd/c%dd%d) %s\n",
-			  Controller, LogicalDriveNumber,
-			  Controller->ControllerNumber,
-			  LogicalDriveNumber,
-			  (Command->V2.CommandStatus
-			   == DAC960_V2_NormalCompletion
-			   ? "Cancelled" : "Not Cancelled"));
-    }
-  else if (strcmp(UserCommand, "perform-discovery") == 0)
-    {
-      CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_StartDiscovery;
-      DAC960_ExecuteCommand(Command);
-      DAC960_UserCritical("Discovery %s\n", Controller,
-			  (Command->V2.CommandStatus
-			   == DAC960_V2_NormalCompletion
-			   ? "Initiated" : "Not Initiated"));
-      if (Command->V2.CommandStatus == DAC960_V2_NormalCompletion)
-	{
-	  CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
-	  CommandMailbox->ControllerInfo.CommandControlBits
-					.DataTransferControllerToHost = true;
-	  CommandMailbox->ControllerInfo.CommandControlBits
-					.NoAutoRequestSense = true;
-	  CommandMailbox->ControllerInfo.DataTransferSize =
-	    sizeof(DAC960_V2_ControllerInfo_T);
-	  CommandMailbox->ControllerInfo.ControllerNumber = 0;
-	  CommandMailbox->ControllerInfo.IOCTL_Opcode =
-	    DAC960_V2_GetControllerInfo;
-	  /*
-	   * How does this NOT race with the queued Monitoring
-	   * usage of this structure?
-	   */
-	  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
-					.ScatterGatherSegments[0]
-					.SegmentDataPointer =
-	    Controller->V2.NewControllerInformationDMA;
-	  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
-					.ScatterGatherSegments[0]
-					.SegmentByteCount =
-	    CommandMailbox->ControllerInfo.DataTransferSize;
-	  while (1) {
-	    DAC960_ExecuteCommand(Command);
-	    if (!Controller->V2.NewControllerInformation->PhysicalScanActive)
-		break;
-	    msleep(1000);
-	  }
-	  DAC960_UserCritical("Discovery Completed\n", Controller);
- 	}
-    }
-  else if (strcmp(UserCommand, "suppress-enclosure-messages") == 0)
-    Controller->SuppressEnclosureMessages = true;
-  else DAC960_UserCritical("Illegal User Command: '%s'\n",
-			   Controller, UserCommand);
-
-  spin_lock_irqsave(&Controller->queue_lock, flags);
-  DAC960_DeallocateCommand(Command);
-  spin_unlock_irqrestore(&Controller->queue_lock, flags);
-  return true;
-}
-
-static int __maybe_unused dac960_proc_show(struct seq_file *m, void *v)
-{
-  unsigned char *StatusMessage = "OK\n";
-  int ControllerNumber;
-  for (ControllerNumber = 0;
-       ControllerNumber < DAC960_ControllerCount;
-       ControllerNumber++)
-    {
-      DAC960_Controller_T *Controller = DAC960_Controllers[ControllerNumber];
-      if (Controller == NULL) continue;
-      if (Controller->MonitoringAlertMode)
-	{
-	  StatusMessage = "ALERT\n";
-	  break;
-	}
-    }
-  seq_puts(m, StatusMessage);
-  return 0;
-}
-
-static int __maybe_unused dac960_initial_status_proc_show(struct seq_file *m,
-							  void *v)
-{
-	DAC960_Controller_T *Controller = (DAC960_Controller_T *)m->private;
-	seq_printf(m, "%.*s", Controller->InitialStatusLength, Controller->CombinedStatusBuffer);
-	return 0;
-}
-
-static int __maybe_unused dac960_current_status_proc_show(struct seq_file *m,
-							  void *v)
-{
-  DAC960_Controller_T *Controller = (DAC960_Controller_T *) m->private;
-  unsigned char *StatusMessage =
-    "No Rebuild or Consistency Check in Progress\n";
-  int ProgressMessageLength = strlen(StatusMessage);
-  if (jiffies != Controller->LastCurrentStatusTime)
-    {
-      Controller->CurrentStatusLength = 0;
-      DAC960_AnnounceDriver(Controller);
-      DAC960_ReportControllerConfiguration(Controller);
-      DAC960_ReportDeviceConfiguration(Controller);
-      if (Controller->ProgressBufferLength > 0)
-	ProgressMessageLength = Controller->ProgressBufferLength;
-      if (DAC960_CheckStatusBuffer(Controller, 2 + ProgressMessageLength))
-	{
-	  unsigned char *CurrentStatusBuffer = Controller->CurrentStatusBuffer;
-	  CurrentStatusBuffer[Controller->CurrentStatusLength++] = ' ';
-	  CurrentStatusBuffer[Controller->CurrentStatusLength++] = ' ';
-	  if (Controller->ProgressBufferLength > 0)
-	    strcpy(&CurrentStatusBuffer[Controller->CurrentStatusLength],
-		   Controller->ProgressBuffer);
-	  else
-	    strcpy(&CurrentStatusBuffer[Controller->CurrentStatusLength],
-		   StatusMessage);
-	  Controller->CurrentStatusLength += ProgressMessageLength;
-	}
-      Controller->LastCurrentStatusTime = jiffies;
-    }
-	seq_printf(m, "%.*s", Controller->CurrentStatusLength, Controller->CurrentStatusBuffer);
-	return 0;
-}
-
-static int dac960_user_command_proc_show(struct seq_file *m, void *v)
-{
-	DAC960_Controller_T *Controller = (DAC960_Controller_T *)m->private;
-
-	seq_printf(m, "%.*s", Controller->UserStatusLength, Controller->UserStatusBuffer);
-	return 0;
-}
-
-static int dac960_user_command_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, dac960_user_command_proc_show, PDE_DATA(inode));
-}
-
-static ssize_t dac960_user_command_proc_write(struct file *file,
-				       const char __user *Buffer,
-				       size_t Count, loff_t *pos)
-{
-  DAC960_Controller_T *Controller = PDE_DATA(file_inode(file));
-  unsigned char CommandBuffer[80];
-  int Length;
-  if (Count > sizeof(CommandBuffer)-1) return -EINVAL;
-  if (copy_from_user(CommandBuffer, Buffer, Count)) return -EFAULT;
-  CommandBuffer[Count] = '\0';
-  Length = strlen(CommandBuffer);
-  if (Length > 0 && CommandBuffer[Length-1] == '\n')
-    CommandBuffer[--Length] = '\0';
-  if (Controller->FirmwareType == DAC960_V1_Controller)
-    return (DAC960_V1_ExecuteUserCommand(Controller, CommandBuffer)
-	    ? Count : -EBUSY);
-  else
-    return (DAC960_V2_ExecuteUserCommand(Controller, CommandBuffer)
-	    ? Count : -EBUSY);
-}
-
-static const struct file_operations dac960_user_command_proc_fops = {
-	.owner		= THIS_MODULE,
-	.open		= dac960_user_command_proc_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-	.write		= dac960_user_command_proc_write,
-};
-
-/*
-  DAC960_CreateProcEntries creates the /proc/rd/... entries for the
-  DAC960 Driver.
-*/
-
-static void DAC960_CreateProcEntries(DAC960_Controller_T *Controller)
-{
-	struct proc_dir_entry *ControllerProcEntry;
-
-	if (DAC960_ProcDirectoryEntry == NULL) {
-		DAC960_ProcDirectoryEntry = proc_mkdir("rd", NULL);
-		proc_create_single("status", 0, DAC960_ProcDirectoryEntry,
-				dac960_proc_show);
-	}
-
-	snprintf(Controller->ControllerName, sizeof(Controller->ControllerName),
-		 "c%d", Controller->ControllerNumber);
-	ControllerProcEntry = proc_mkdir(Controller->ControllerName,
-					 DAC960_ProcDirectoryEntry);
-	proc_create_single_data("initial_status", 0, ControllerProcEntry,
-			dac960_initial_status_proc_show, Controller);
-	proc_create_single_data("current_status", 0, ControllerProcEntry,
-			dac960_current_status_proc_show, Controller);
-	proc_create_data("user_command", 0600, ControllerProcEntry, &dac960_user_command_proc_fops, Controller);
-	Controller->ControllerProcEntry = ControllerProcEntry;
-}
-
-
-/*
-  DAC960_DestroyProcEntries destroys the /proc/rd/... entries for the
-  DAC960 Driver.
-*/
-
-static void DAC960_DestroyProcEntries(DAC960_Controller_T *Controller)
-{
-      if (Controller->ControllerProcEntry == NULL)
-	      return;
-      remove_proc_entry("initial_status", Controller->ControllerProcEntry);
-      remove_proc_entry("current_status", Controller->ControllerProcEntry);
-      remove_proc_entry("user_command", Controller->ControllerProcEntry);
-      remove_proc_entry(Controller->ControllerName, DAC960_ProcDirectoryEntry);
-      Controller->ControllerProcEntry = NULL;
-}
-
-#ifdef DAC960_GAM_MINOR
-
-static long DAC960_gam_get_controller_info(DAC960_ControllerInfo_T __user *UserSpaceControllerInfo)
-{
-	DAC960_ControllerInfo_T ControllerInfo;
-	DAC960_Controller_T *Controller;
-	int ControllerNumber;
-	long ErrorCode;
-
-	if (UserSpaceControllerInfo == NULL)
-		ErrorCode = -EINVAL;
-	else ErrorCode = get_user(ControllerNumber,
-			     &UserSpaceControllerInfo->ControllerNumber);
-	if (ErrorCode != 0)
-		goto out;
-	ErrorCode = -ENXIO;
-	if (ControllerNumber < 0 ||
-	    ControllerNumber > DAC960_ControllerCount - 1) {
-		goto out;
-	}
-	Controller = DAC960_Controllers[ControllerNumber];
-	if (Controller == NULL)
-		goto out;
-	memset(&ControllerInfo, 0, sizeof(DAC960_ControllerInfo_T));
-	ControllerInfo.ControllerNumber = ControllerNumber;
-	ControllerInfo.FirmwareType = Controller->FirmwareType;
-	ControllerInfo.Channels = Controller->Channels;
-	ControllerInfo.Targets = Controller->Targets;
-	ControllerInfo.PCI_Bus = Controller->Bus;
-	ControllerInfo.PCI_Device = Controller->Device;
-	ControllerInfo.PCI_Function = Controller->Function;
-	ControllerInfo.IRQ_Channel = Controller->IRQ_Channel;
-	ControllerInfo.PCI_Address = Controller->PCI_Address;
-	strcpy(ControllerInfo.ModelName, Controller->ModelName);
-	strcpy(ControllerInfo.FirmwareVersion, Controller->FirmwareVersion);
-	ErrorCode = (copy_to_user(UserSpaceControllerInfo, &ControllerInfo,
-			     sizeof(DAC960_ControllerInfo_T)) ? -EFAULT : 0);
-out:
-	return ErrorCode;
-}
-
-static long DAC960_gam_v1_execute_command(DAC960_V1_UserCommand_T __user *UserSpaceUserCommand)
-{
-	DAC960_V1_UserCommand_T UserCommand;
-	DAC960_Controller_T *Controller;
-	DAC960_Command_T *Command = NULL;
-	DAC960_V1_CommandOpcode_T CommandOpcode;
-	DAC960_V1_CommandStatus_T CommandStatus;
-	DAC960_V1_DCDB_T DCDB;
-	DAC960_V1_DCDB_T *DCDB_IOBUF = NULL;
-	dma_addr_t	DCDB_IOBUFDMA;
-	unsigned long flags;
-	int ControllerNumber, DataTransferLength;
-	unsigned char *DataTransferBuffer = NULL;
-	dma_addr_t DataTransferBufferDMA;
-        long ErrorCode;
-
-	if (UserSpaceUserCommand == NULL) {
-		ErrorCode = -EINVAL;
-		goto out;
-	}
-	if (copy_from_user(&UserCommand, UserSpaceUserCommand,
-				   sizeof(DAC960_V1_UserCommand_T))) {
-		ErrorCode = -EFAULT;
-		goto out;
-	}
-	ControllerNumber = UserCommand.ControllerNumber;
-    	ErrorCode = -ENXIO;
-	if (ControllerNumber < 0 ||
-	    ControllerNumber > DAC960_ControllerCount - 1)
-		goto out;
-	Controller = DAC960_Controllers[ControllerNumber];
-	if (Controller == NULL)
-		goto out;
-	ErrorCode = -EINVAL;
-	if (Controller->FirmwareType != DAC960_V1_Controller)
-		goto out;
-	CommandOpcode = UserCommand.CommandMailbox.Common.CommandOpcode;
-	DataTransferLength = UserCommand.DataTransferLength;
-	if (CommandOpcode & 0x80)
-		goto out;
-	if (CommandOpcode == DAC960_V1_DCDB)
-	  {
-	    if (copy_from_user(&DCDB, UserCommand.DCDB,
-			       sizeof(DAC960_V1_DCDB_T))) {
-		ErrorCode = -EFAULT;
-		goto out;
-	    }
-	    if (DCDB.Channel >= DAC960_V1_MaxChannels)
-		goto out;
-	    if (!((DataTransferLength == 0 &&
-		   DCDB.Direction
-		   == DAC960_V1_DCDB_NoDataTransfer) ||
-		  (DataTransferLength > 0 &&
-		   DCDB.Direction
-		   == DAC960_V1_DCDB_DataTransferDeviceToSystem) ||
-		  (DataTransferLength < 0 &&
-		   DCDB.Direction
-		   == DAC960_V1_DCDB_DataTransferSystemToDevice)))
-			goto out;
-	    if (((DCDB.TransferLengthHigh4 << 16) | DCDB.TransferLength)
-		!= abs(DataTransferLength))
-			goto out;
-	    DCDB_IOBUF = pci_alloc_consistent(Controller->PCIDevice,
-			sizeof(DAC960_V1_DCDB_T), &DCDB_IOBUFDMA);
-	    if (DCDB_IOBUF == NULL) {
-	    		ErrorCode = -ENOMEM;
-			goto out;
-		}
-	  }
-	ErrorCode = -ENOMEM;
-	if (DataTransferLength > 0)
-	  {
-	    DataTransferBuffer = pci_zalloc_consistent(Controller->PCIDevice,
-                                                       DataTransferLength,
-                                                       &DataTransferBufferDMA);
-	    if (DataTransferBuffer == NULL)
-		goto out;
-	  }
-	else if (DataTransferLength < 0)
-	  {
-	    DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
-				-DataTransferLength, &DataTransferBufferDMA);
-	    if (DataTransferBuffer == NULL)
-		goto out;
-	    if (copy_from_user(DataTransferBuffer,
-			       UserCommand.DataTransferBuffer,
-			       -DataTransferLength)) {
-		ErrorCode = -EFAULT;
-		goto out;
-	    }
-	  }
-	if (CommandOpcode == DAC960_V1_DCDB)
-	  {
-	    spin_lock_irqsave(&Controller->queue_lock, flags);
-	    while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
-	      DAC960_WaitForCommand(Controller);
-	    while (Controller->V1.DirectCommandActive[DCDB.Channel]
-						     [DCDB.TargetID])
-	      {
-		spin_unlock_irq(&Controller->queue_lock);
-		__wait_event(Controller->CommandWaitQueue,
-			     !Controller->V1.DirectCommandActive
-					     [DCDB.Channel][DCDB.TargetID]);
-		spin_lock_irq(&Controller->queue_lock);
-	      }
-	    Controller->V1.DirectCommandActive[DCDB.Channel]
-					      [DCDB.TargetID] = true;
-	    spin_unlock_irqrestore(&Controller->queue_lock, flags);
-	    DAC960_V1_ClearCommand(Command);
-	    Command->CommandType = DAC960_ImmediateCommand;
-	    memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
-		   sizeof(DAC960_V1_CommandMailbox_T));
-	    Command->V1.CommandMailbox.Type3.BusAddress = DCDB_IOBUFDMA;
-	    DCDB.BusAddress = DataTransferBufferDMA;
-	    memcpy(DCDB_IOBUF, &DCDB, sizeof(DAC960_V1_DCDB_T));
-	  }
-	else
-	  {
-	    spin_lock_irqsave(&Controller->queue_lock, flags);
-	    while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
-	      DAC960_WaitForCommand(Controller);
-	    spin_unlock_irqrestore(&Controller->queue_lock, flags);
-	    DAC960_V1_ClearCommand(Command);
-	    Command->CommandType = DAC960_ImmediateCommand;
-	    memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
-		   sizeof(DAC960_V1_CommandMailbox_T));
-	    if (DataTransferBuffer != NULL)
-	      Command->V1.CommandMailbox.Type3.BusAddress =
-		DataTransferBufferDMA;
-	  }
-	DAC960_ExecuteCommand(Command);
-	CommandStatus = Command->V1.CommandStatus;
-	spin_lock_irqsave(&Controller->queue_lock, flags);
-	DAC960_DeallocateCommand(Command);
-	spin_unlock_irqrestore(&Controller->queue_lock, flags);
-	if (DataTransferLength > 0)
-	  {
-	    if (copy_to_user(UserCommand.DataTransferBuffer,
-			     DataTransferBuffer, DataTransferLength)) {
-		ErrorCode = -EFAULT;
-		goto Failure1;
-            }
-	  }
-	if (CommandOpcode == DAC960_V1_DCDB)
-	  {
-	    /*
-	      I don't believe Target or Channel in the DCDB_IOBUF
-	      should be any different from the contents of DCDB.
-	     */
-	    Controller->V1.DirectCommandActive[DCDB.Channel]
-					      [DCDB.TargetID] = false;
-	    if (copy_to_user(UserCommand.DCDB, DCDB_IOBUF,
-			     sizeof(DAC960_V1_DCDB_T))) {
-		ErrorCode = -EFAULT;
-		goto Failure1;
-	    }
-	  }
-	ErrorCode = CommandStatus;
-      Failure1:
-	if (DataTransferBuffer != NULL)
-	  pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
-			DataTransferBuffer, DataTransferBufferDMA);
-	if (DCDB_IOBUF != NULL)
-	  pci_free_consistent(Controller->PCIDevice, sizeof(DAC960_V1_DCDB_T),
-			DCDB_IOBUF, DCDB_IOBUFDMA);
-	out:
-	return ErrorCode;
-}
-
-static long DAC960_gam_v2_execute_command(DAC960_V2_UserCommand_T __user *UserSpaceUserCommand)
-{
-	DAC960_V2_UserCommand_T UserCommand;
-	DAC960_Controller_T *Controller;
-	DAC960_Command_T *Command = NULL;
-	DAC960_V2_CommandMailbox_T *CommandMailbox;
-	DAC960_V2_CommandStatus_T CommandStatus;
-	unsigned long flags;
-	int ControllerNumber, DataTransferLength;
-	int DataTransferResidue, RequestSenseLength;
-	unsigned char *DataTransferBuffer = NULL;
-	dma_addr_t DataTransferBufferDMA;
-	unsigned char *RequestSenseBuffer = NULL;
-	dma_addr_t RequestSenseBufferDMA;
-	long ErrorCode = -EINVAL;
-
-	if (UserSpaceUserCommand == NULL)
-		goto out;
-	if (copy_from_user(&UserCommand, UserSpaceUserCommand,
-			   sizeof(DAC960_V2_UserCommand_T))) {
-		ErrorCode = -EFAULT;
-		goto out;
-	}
-	ErrorCode = -ENXIO;
-	ControllerNumber = UserCommand.ControllerNumber;
-	if (ControllerNumber < 0 ||
-	    ControllerNumber > DAC960_ControllerCount - 1)
-		goto out;
-	Controller = DAC960_Controllers[ControllerNumber];
-	if (Controller == NULL)
-		goto out;
-	if (Controller->FirmwareType != DAC960_V2_Controller){
-		ErrorCode = -EINVAL;
-		goto out;
-	}
-	DataTransferLength = UserCommand.DataTransferLength;
-    	ErrorCode = -ENOMEM;
-	if (DataTransferLength > 0)
-	  {
-	    DataTransferBuffer = pci_zalloc_consistent(Controller->PCIDevice,
-                                                       DataTransferLength,
-                                                       &DataTransferBufferDMA);
-	    if (DataTransferBuffer == NULL)
-		goto out;
-	  }
-	else if (DataTransferLength < 0)
-	  {
-	    DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
-				-DataTransferLength, &DataTransferBufferDMA);
-	    if (DataTransferBuffer == NULL)
-		goto out;
-	    if (copy_from_user(DataTransferBuffer,
-			       UserCommand.DataTransferBuffer,
-			       -DataTransferLength)) {
-		ErrorCode = -EFAULT;
-		goto Failure2;
-	    }
-	  }
-	RequestSenseLength = UserCommand.RequestSenseLength;
-	if (RequestSenseLength > 0)
-	  {
-	    RequestSenseBuffer = pci_zalloc_consistent(Controller->PCIDevice,
-                                                       RequestSenseLength,
-                                                       &RequestSenseBufferDMA);
-	    if (RequestSenseBuffer == NULL)
-	      {
-		ErrorCode = -ENOMEM;
-		goto Failure2;
-	      }
-	  }
-	spin_lock_irqsave(&Controller->queue_lock, flags);
-	while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
-	  DAC960_WaitForCommand(Controller);
-	spin_unlock_irqrestore(&Controller->queue_lock, flags);
-	DAC960_V2_ClearCommand(Command);
-	Command->CommandType = DAC960_ImmediateCommand;
-	CommandMailbox = &Command->V2.CommandMailbox;
-	memcpy(CommandMailbox, &UserCommand.CommandMailbox,
-	       sizeof(DAC960_V2_CommandMailbox_T));
-	CommandMailbox->Common.CommandControlBits
-			      .AdditionalScatterGatherListMemory = false;
-	CommandMailbox->Common.CommandControlBits
-			      .NoAutoRequestSense = true;
-	CommandMailbox->Common.DataTransferSize = 0;
-	CommandMailbox->Common.DataTransferPageNumber = 0;
-	memset(&CommandMailbox->Common.DataTransferMemoryAddress, 0,
-	       sizeof(DAC960_V2_DataTransferMemoryAddress_T));
-	if (DataTransferLength != 0)
-	  {
-	    if (DataTransferLength > 0)
-	      {
-		CommandMailbox->Common.CommandControlBits
-				      .DataTransferControllerToHost = true;
-		CommandMailbox->Common.DataTransferSize = DataTransferLength;
-	      }
-	    else
-	      {
-		CommandMailbox->Common.CommandControlBits
-				      .DataTransferControllerToHost = false;
-		CommandMailbox->Common.DataTransferSize = -DataTransferLength;
-	      }
-	    CommandMailbox->Common.DataTransferMemoryAddress
-				  .ScatterGatherSegments[0]
-				  .SegmentDataPointer = DataTransferBufferDMA;
-	    CommandMailbox->Common.DataTransferMemoryAddress
-				  .ScatterGatherSegments[0]
-				  .SegmentByteCount =
-	      CommandMailbox->Common.DataTransferSize;
-	  }
-	if (RequestSenseLength > 0)
-	  {
-	    CommandMailbox->Common.CommandControlBits
-				  .NoAutoRequestSense = false;
-	    CommandMailbox->Common.RequestSenseSize = RequestSenseLength;
-	    CommandMailbox->Common.RequestSenseBusAddress =
-	      						RequestSenseBufferDMA;
-	  }
-	DAC960_ExecuteCommand(Command);
-	CommandStatus = Command->V2.CommandStatus;
-	RequestSenseLength = Command->V2.RequestSenseLength;
-	DataTransferResidue = Command->V2.DataTransferResidue;
-	spin_lock_irqsave(&Controller->queue_lock, flags);
-	DAC960_DeallocateCommand(Command);
-	spin_unlock_irqrestore(&Controller->queue_lock, flags);
-	if (RequestSenseLength > UserCommand.RequestSenseLength)
-	  RequestSenseLength = UserCommand.RequestSenseLength;
-	if (copy_to_user(&UserSpaceUserCommand->DataTransferLength,
-				 &DataTransferResidue,
-				 sizeof(DataTransferResidue))) {
-		ErrorCode = -EFAULT;
-		goto Failure2;
-	}
-	if (copy_to_user(&UserSpaceUserCommand->RequestSenseLength,
-			 &RequestSenseLength, sizeof(RequestSenseLength))) {
-		ErrorCode = -EFAULT;
-		goto Failure2;
-	}
-	if (DataTransferLength > 0)
-	  {
-	    if (copy_to_user(UserCommand.DataTransferBuffer,
-			     DataTransferBuffer, DataTransferLength)) {
-		ErrorCode = -EFAULT;
-		goto Failure2;
-	    }
-	  }
-	if (RequestSenseLength > 0)
-	  {
-	    if (copy_to_user(UserCommand.RequestSenseBuffer,
-			     RequestSenseBuffer, RequestSenseLength)) {
-		ErrorCode = -EFAULT;
-		goto Failure2;
-	    }
-	  }
-	ErrorCode = CommandStatus;
-      Failure2:
-	  pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
-		DataTransferBuffer, DataTransferBufferDMA);
-	if (RequestSenseBuffer != NULL)
-	  pci_free_consistent(Controller->PCIDevice, RequestSenseLength,
-		RequestSenseBuffer, RequestSenseBufferDMA);
-out:
-        return ErrorCode;
-}
-
-static long DAC960_gam_v2_get_health_status(DAC960_V2_GetHealthStatus_T __user *UserSpaceGetHealthStatus)
-{
-	DAC960_V2_GetHealthStatus_T GetHealthStatus;
-	DAC960_V2_HealthStatusBuffer_T HealthStatusBuffer;
-	DAC960_Controller_T *Controller;
-	int ControllerNumber;
-	long ErrorCode;
-
-	if (UserSpaceGetHealthStatus == NULL) {
-		ErrorCode = -EINVAL;
-		goto out;
-	}
-	if (copy_from_user(&GetHealthStatus, UserSpaceGetHealthStatus,
-			   sizeof(DAC960_V2_GetHealthStatus_T))) {
-		ErrorCode = -EFAULT;
-		goto out;
-	}
-	ErrorCode = -ENXIO;
-	ControllerNumber = GetHealthStatus.ControllerNumber;
-	if (ControllerNumber < 0 ||
-	    ControllerNumber > DAC960_ControllerCount - 1)
-		goto out;
-	Controller = DAC960_Controllers[ControllerNumber];
-	if (Controller == NULL)
-		goto out;
-	if (Controller->FirmwareType != DAC960_V2_Controller) {
-		ErrorCode = -EINVAL;
-		goto out;
-	}
-	if (copy_from_user(&HealthStatusBuffer,
-			   GetHealthStatus.HealthStatusBuffer,
-			   sizeof(DAC960_V2_HealthStatusBuffer_T))) {
-		ErrorCode = -EFAULT;
-		goto out;
-	}
-	ErrorCode = wait_event_interruptible_timeout(Controller->HealthStatusWaitQueue,
-			!(Controller->V2.HealthStatusBuffer->StatusChangeCounter
-			    == HealthStatusBuffer.StatusChangeCounter &&
-			  Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
-			    == HealthStatusBuffer.NextEventSequenceNumber),
-			DAC960_MonitoringTimerInterval);
-	if (ErrorCode == -ERESTARTSYS) {
-		ErrorCode = -EINTR;
-		goto out;
-	}
-	if (copy_to_user(GetHealthStatus.HealthStatusBuffer,
-			 Controller->V2.HealthStatusBuffer,
-			 sizeof(DAC960_V2_HealthStatusBuffer_T)))
-		ErrorCode = -EFAULT;
-	else
-		ErrorCode =  0;
-
-out:
-	return ErrorCode;
-}
-
-/*
- * DAC960_gam_ioctl is the ioctl function for performing RAID operations.
-*/
-
-static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
-						unsigned long Argument)
-{
-  long ErrorCode = 0;
-  void __user *argp = (void __user *)Argument;
-  if (!capable(CAP_SYS_ADMIN)) return -EACCES;
-
-  mutex_lock(&DAC960_mutex);
-  switch (Request)
-    {
-    case DAC960_IOCTL_GET_CONTROLLER_COUNT:
-      ErrorCode = DAC960_ControllerCount;
-      break;
-    case DAC960_IOCTL_GET_CONTROLLER_INFO:
-      ErrorCode = DAC960_gam_get_controller_info(argp);
-      break;
-    case DAC960_IOCTL_V1_EXECUTE_COMMAND:
-      ErrorCode = DAC960_gam_v1_execute_command(argp);
-      break;
-    case DAC960_IOCTL_V2_EXECUTE_COMMAND:
-      ErrorCode = DAC960_gam_v2_execute_command(argp);
-      break;
-    case DAC960_IOCTL_V2_GET_HEALTH_STATUS:
-      ErrorCode = DAC960_gam_v2_get_health_status(argp);
-      break;
-      default:
-	ErrorCode = -ENOTTY;
-    }
-  mutex_unlock(&DAC960_mutex);
-  return ErrorCode;
-}
-
-static const struct file_operations DAC960_gam_fops = {
-	.owner		= THIS_MODULE,
-	.unlocked_ioctl	= DAC960_gam_ioctl,
-	.llseek		= noop_llseek,
-};
-
-static struct miscdevice DAC960_gam_dev = {
-	DAC960_GAM_MINOR,
-	"dac960_gam",
-	&DAC960_gam_fops
-};
-
-static int DAC960_gam_init(void)
-{
-	int ret;
-
-	ret = misc_register(&DAC960_gam_dev);
-	if (ret)
-		printk(KERN_ERR "DAC960_gam: can't misc_register on minor %d\n", DAC960_GAM_MINOR);
-	return ret;
-}
-
-static void DAC960_gam_cleanup(void)
-{
-	misc_deregister(&DAC960_gam_dev);
-}
-
-#endif /* DAC960_GAM_MINOR */
-
-static struct DAC960_privdata DAC960_GEM_privdata = {
-	.HardwareType =		DAC960_GEM_Controller,
-	.FirmwareType 	=	DAC960_V2_Controller,
-	.InterruptHandler =	DAC960_GEM_InterruptHandler,
-	.MemoryWindowSize =	DAC960_GEM_RegisterWindowSize,
-};
-
-
-static struct DAC960_privdata DAC960_BA_privdata = {
-	.HardwareType =		DAC960_BA_Controller,
-	.FirmwareType 	=	DAC960_V2_Controller,
-	.InterruptHandler =	DAC960_BA_InterruptHandler,
-	.MemoryWindowSize =	DAC960_BA_RegisterWindowSize,
-};
-
-static struct DAC960_privdata DAC960_LP_privdata = {
-	.HardwareType =		DAC960_LP_Controller,
-	.FirmwareType 	=	DAC960_V2_Controller,
-	.InterruptHandler =	DAC960_LP_InterruptHandler,
-	.MemoryWindowSize =	DAC960_LP_RegisterWindowSize,
-};
-
-static struct DAC960_privdata DAC960_LA_privdata = {
-	.HardwareType =		DAC960_LA_Controller,
-	.FirmwareType 	=	DAC960_V1_Controller,
-	.InterruptHandler =	DAC960_LA_InterruptHandler,
-	.MemoryWindowSize =	DAC960_LA_RegisterWindowSize,
-};
-
-static struct DAC960_privdata DAC960_PG_privdata = {
-	.HardwareType =		DAC960_PG_Controller,
-	.FirmwareType 	=	DAC960_V1_Controller,
-	.InterruptHandler =	DAC960_PG_InterruptHandler,
-	.MemoryWindowSize =	DAC960_PG_RegisterWindowSize,
-};
-
-static struct DAC960_privdata DAC960_PD_privdata = {
-	.HardwareType =		DAC960_PD_Controller,
-	.FirmwareType 	=	DAC960_V1_Controller,
-	.InterruptHandler =	DAC960_PD_InterruptHandler,
-	.MemoryWindowSize =	DAC960_PD_RegisterWindowSize,
-};
-
-static struct DAC960_privdata DAC960_P_privdata = {
-	.HardwareType =		DAC960_P_Controller,
-	.FirmwareType 	=	DAC960_V1_Controller,
-	.InterruptHandler =	DAC960_P_InterruptHandler,
-	.MemoryWindowSize =	DAC960_PD_RegisterWindowSize,
-};
-
-static const struct pci_device_id DAC960_id_table[] = {
-	{
-		.vendor 	= PCI_VENDOR_ID_MYLEX,
-		.device		= PCI_DEVICE_ID_MYLEX_DAC960_GEM,
-		.subvendor	= PCI_VENDOR_ID_MYLEX,
-		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (unsigned long) &DAC960_GEM_privdata,
-	},
-	{
-		.vendor 	= PCI_VENDOR_ID_MYLEX,
-		.device		= PCI_DEVICE_ID_MYLEX_DAC960_BA,
-		.subvendor	= PCI_ANY_ID,
-		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (unsigned long) &DAC960_BA_privdata,
-	},
-	{
-		.vendor 	= PCI_VENDOR_ID_MYLEX,
-		.device		= PCI_DEVICE_ID_MYLEX_DAC960_LP,
-		.subvendor	= PCI_ANY_ID,
-		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (unsigned long) &DAC960_LP_privdata,
-	},
-	{
-		.vendor 	= PCI_VENDOR_ID_DEC,
-		.device		= PCI_DEVICE_ID_DEC_21285,
-		.subvendor	= PCI_VENDOR_ID_MYLEX,
-		.subdevice	= PCI_DEVICE_ID_MYLEX_DAC960_LA,
-		.driver_data	= (unsigned long) &DAC960_LA_privdata,
-	},
-	{
-		.vendor 	= PCI_VENDOR_ID_MYLEX,
-		.device		= PCI_DEVICE_ID_MYLEX_DAC960_PG,
-		.subvendor	= PCI_ANY_ID,
-		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (unsigned long) &DAC960_PG_privdata,
-	},
-	{
-		.vendor 	= PCI_VENDOR_ID_MYLEX,
-		.device		= PCI_DEVICE_ID_MYLEX_DAC960_PD,
-		.subvendor	= PCI_ANY_ID,
-		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (unsigned long) &DAC960_PD_privdata,
-	},
-	{
-		.vendor 	= PCI_VENDOR_ID_MYLEX,
-		.device		= PCI_DEVICE_ID_MYLEX_DAC960_P,
-		.subvendor	= PCI_ANY_ID,
-		.subdevice	= PCI_ANY_ID,
-		.driver_data	= (unsigned long) &DAC960_P_privdata,
-	},
-	{0, },
-};
-
-MODULE_DEVICE_TABLE(pci, DAC960_id_table);
-
-static struct pci_driver DAC960_pci_driver = {
-	.name		= "DAC960",
-	.id_table	= DAC960_id_table,
-	.probe		= DAC960_Probe,
-	.remove		= DAC960_Remove,
-};
-
-static int __init DAC960_init_module(void)
-{
-	int ret;
-
-	ret =  pci_register_driver(&DAC960_pci_driver);
-#ifdef DAC960_GAM_MINOR
-	if (!ret)
-		DAC960_gam_init();
-#endif
-	return ret;
-}
-
-static void __exit DAC960_cleanup_module(void)
-{
-	int i;
-
-#ifdef DAC960_GAM_MINOR
-	DAC960_gam_cleanup();
-#endif
-
-	for (i = 0; i < DAC960_ControllerCount; i++) {
-		DAC960_Controller_T *Controller = DAC960_Controllers[i];
-		if (Controller == NULL)
-			continue;
-		DAC960_FinalizeController(Controller);
-	}
-	if (DAC960_ProcDirectoryEntry != NULL) {
-  		remove_proc_entry("rd/status", NULL);
-  		remove_proc_entry("rd", NULL);
-	}
-	DAC960_ControllerCount = 0;
-	pci_unregister_driver(&DAC960_pci_driver);
-}
-
-module_init(DAC960_init_module);
-module_exit(DAC960_cleanup_module);
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/block/DAC960.h b/drivers/block/DAC960.h
deleted file mode 100644
index 1439e651928b..000000000000
--- a/drivers/block/DAC960.h
+++ /dev/null
@@ -1,4414 +0,0 @@
-/*
-
-  Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers
-
-  Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com>
-
-  This program is free software; you may redistribute and/or modify it under
-  the terms of the GNU General Public License Version 2 as published by the
-  Free Software Foundation.
-
-  This program is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
-  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-  for complete details.
-
-  The author respectfully requests that any modifications to this software be
-  sent directly to him for evaluation and testing.
-
-*/
-
-
-/*
-  Define the maximum number of DAC960 Controllers supported by this driver.
-*/
-
-#define DAC960_MaxControllers			8
-
-
-/*
-  Define the maximum number of Controller Channels supported by DAC960
-  V1 and V2 Firmware Controllers.
-*/
-
-#define DAC960_V1_MaxChannels			3
-#define DAC960_V2_MaxChannels			4
-
-
-/*
-  Define the maximum number of Targets per Channel supported by DAC960
-  V1 and V2 Firmware Controllers.
-*/
-
-#define DAC960_V1_MaxTargets			16
-#define DAC960_V2_MaxTargets			128
-
-
-/*
-  Define the maximum number of Logical Drives supported by DAC960
-  V1 and V2 Firmware Controllers.
-*/
-
-#define DAC960_MaxLogicalDrives			32
-
-
-/*
-  Define the maximum number of Physical Devices supported by DAC960
-  V1 and V2 Firmware Controllers.
-*/
-
-#define DAC960_V1_MaxPhysicalDevices		45
-#define DAC960_V2_MaxPhysicalDevices		272
-
-/*
-  Define a 32/64 bit I/O Address data type.
-*/
-
-typedef unsigned long DAC960_IO_Address_T;
-
-
-/*
-  Define a 32/64 bit PCI Bus Address data type.
-*/
-
-typedef unsigned long DAC960_PCI_Address_T;
-
-
-/*
-  Define a 32 bit Bus Address data type.
-*/
-
-typedef unsigned int DAC960_BusAddress32_T;
-
-
-/*
-  Define a 64 bit Bus Address data type.
-*/
-
-typedef unsigned long long DAC960_BusAddress64_T;
-
-
-/*
-  Define a 32 bit Byte Count data type.
-*/
-
-typedef unsigned int DAC960_ByteCount32_T;
-
-
-/*
-  Define a 64 bit Byte Count data type.
-*/
-
-typedef unsigned long long DAC960_ByteCount64_T;
-
-
-/*
-  dma_loaf is used by helper routines to divide a region of
-  dma mapped memory into smaller pieces, where those pieces
-  are not of uniform size.
- */
-
-struct dma_loaf {
-	void	*cpu_base;
-	dma_addr_t dma_base;
-	size_t  length;
-	void	*cpu_free;
-	dma_addr_t dma_free;
-};
-
-/*
-  Define the SCSI INQUIRY Standard Data structure.
-*/
-
-typedef struct DAC960_SCSI_Inquiry
-{
-  unsigned char PeripheralDeviceType:5;			/* Byte 0 Bits 0-4 */
-  unsigned char PeripheralQualifier:3;			/* Byte 0 Bits 5-7 */
-  unsigned char DeviceTypeModifier:7;			/* Byte 1 Bits 0-6 */
-  bool RMB:1;						/* Byte 1 Bit 7 */
-  unsigned char ANSI_ApprovedVersion:3;			/* Byte 2 Bits 0-2 */
-  unsigned char ECMA_Version:3;				/* Byte 2 Bits 3-5 */
-  unsigned char ISO_Version:2;				/* Byte 2 Bits 6-7 */
-  unsigned char ResponseDataFormat:4;			/* Byte 3 Bits 0-3 */
-  unsigned char :2;					/* Byte 3 Bits 4-5 */
-  bool TrmIOP:1;					/* Byte 3 Bit 6 */
-  bool AENC:1;						/* Byte 3 Bit 7 */
-  unsigned char AdditionalLength;			/* Byte 4 */
-  unsigned char :8;					/* Byte 5 */
-  unsigned char :8;					/* Byte 6 */
-  bool SftRe:1;						/* Byte 7 Bit 0 */
-  bool CmdQue:1;					/* Byte 7 Bit 1 */
-  bool :1;						/* Byte 7 Bit 2 */
-  bool Linked:1;					/* Byte 7 Bit 3 */
-  bool Sync:1;						/* Byte 7 Bit 4 */
-  bool WBus16:1;					/* Byte 7 Bit 5 */
-  bool WBus32:1;					/* Byte 7 Bit 6 */
-  bool RelAdr:1;					/* Byte 7 Bit 7 */
-  unsigned char VendorIdentification[8];		/* Bytes 8-15 */
-  unsigned char ProductIdentification[16];		/* Bytes 16-31 */
-  unsigned char ProductRevisionLevel[4];		/* Bytes 32-35 */
-}
-DAC960_SCSI_Inquiry_T;
-
-
-/*
-  Define the SCSI INQUIRY Unit Serial Number structure.
-*/
-
-typedef struct DAC960_SCSI_Inquiry_UnitSerialNumber
-{
-  unsigned char PeripheralDeviceType:5;			/* Byte 0 Bits 0-4 */
-  unsigned char PeripheralQualifier:3;			/* Byte 0 Bits 5-7 */
-  unsigned char PageCode;				/* Byte 1 */
-  unsigned char :8;					/* Byte 2 */
-  unsigned char PageLength;				/* Byte 3 */
-  unsigned char ProductSerialNumber[28];		/* Bytes 4-31 */
-}
-DAC960_SCSI_Inquiry_UnitSerialNumber_T;
-
-
-/*
-  Define the SCSI REQUEST SENSE Sense Key type.
-*/
-
-typedef enum
-{
-  DAC960_SenseKey_NoSense =			0x0,
-  DAC960_SenseKey_RecoveredError =		0x1,
-  DAC960_SenseKey_NotReady =			0x2,
-  DAC960_SenseKey_MediumError =			0x3,
-  DAC960_SenseKey_HardwareError =		0x4,
-  DAC960_SenseKey_IllegalRequest =		0x5,
-  DAC960_SenseKey_UnitAttention =		0x6,
-  DAC960_SenseKey_DataProtect =			0x7,
-  DAC960_SenseKey_BlankCheck =			0x8,
-  DAC960_SenseKey_VendorSpecific =		0x9,
-  DAC960_SenseKey_CopyAborted =			0xA,
-  DAC960_SenseKey_AbortedCommand =		0xB,
-  DAC960_SenseKey_Equal =			0xC,
-  DAC960_SenseKey_VolumeOverflow =		0xD,
-  DAC960_SenseKey_Miscompare =			0xE,
-  DAC960_SenseKey_Reserved =			0xF
-}
-__attribute__ ((packed))
-DAC960_SCSI_RequestSenseKey_T;
-
-
-/*
-  Define the SCSI REQUEST SENSE structure.
-*/
-
-typedef struct DAC960_SCSI_RequestSense
-{
-  unsigned char ErrorCode:7;				/* Byte 0 Bits 0-6 */
-  bool Valid:1;						/* Byte 0 Bit 7 */
-  unsigned char SegmentNumber;				/* Byte 1 */
-  DAC960_SCSI_RequestSenseKey_T SenseKey:4;		/* Byte 2 Bits 0-3 */
-  unsigned char :1;					/* Byte 2 Bit 4 */
-  bool ILI:1;						/* Byte 2 Bit 5 */
-  bool EOM:1;						/* Byte 2 Bit 6 */
-  bool Filemark:1;					/* Byte 2 Bit 7 */
-  unsigned char Information[4];				/* Bytes 3-6 */
-  unsigned char AdditionalSenseLength;			/* Byte 7 */
-  unsigned char CommandSpecificInformation[4];		/* Bytes 8-11 */
-  unsigned char AdditionalSenseCode;			/* Byte 12 */
-  unsigned char AdditionalSenseCodeQualifier;		/* Byte 13 */
-}
-DAC960_SCSI_RequestSense_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Command Opcodes.
-*/
-
-typedef enum
-{
-  /* I/O Commands */
-  DAC960_V1_ReadExtended =			0x33,
-  DAC960_V1_WriteExtended =			0x34,
-  DAC960_V1_ReadAheadExtended =			0x35,
-  DAC960_V1_ReadExtendedWithScatterGather =	0xB3,
-  DAC960_V1_WriteExtendedWithScatterGather =	0xB4,
-  DAC960_V1_Read =				0x36,
-  DAC960_V1_ReadWithScatterGather =		0xB6,
-  DAC960_V1_Write =				0x37,
-  DAC960_V1_WriteWithScatterGather =		0xB7,
-  DAC960_V1_DCDB =				0x04,
-  DAC960_V1_DCDBWithScatterGather =		0x84,
-  DAC960_V1_Flush =				0x0A,
-  /* Controller Status Related Commands */
-  DAC960_V1_Enquiry =				0x53,
-  DAC960_V1_Enquiry2 =				0x1C,
-  DAC960_V1_GetLogicalDriveElement =		0x55,
-  DAC960_V1_GetLogicalDriveInformation =	0x19,
-  DAC960_V1_IOPortRead =			0x39,
-  DAC960_V1_IOPortWrite =			0x3A,
-  DAC960_V1_GetSDStats =			0x3E,
-  DAC960_V1_GetPDStats =			0x3F,
-  DAC960_V1_PerformEventLogOperation =		0x72,
-  /* Device Related Commands */
-  DAC960_V1_StartDevice =			0x10,
-  DAC960_V1_GetDeviceState =			0x50,
-  DAC960_V1_StopChannel =			0x13,
-  DAC960_V1_StartChannel =			0x12,
-  DAC960_V1_ResetChannel =			0x1A,
-  /* Commands Associated with Data Consistency and Errors */
-  DAC960_V1_Rebuild =				0x09,
-  DAC960_V1_RebuildAsync =			0x16,
-  DAC960_V1_CheckConsistency =			0x0F,
-  DAC960_V1_CheckConsistencyAsync =		0x1E,
-  DAC960_V1_RebuildStat =			0x0C,
-  DAC960_V1_GetRebuildProgress =		0x27,
-  DAC960_V1_RebuildControl =			0x1F,
-  DAC960_V1_ReadBadBlockTable =			0x0B,
-  DAC960_V1_ReadBadDataTable =			0x25,
-  DAC960_V1_ClearBadDataTable =			0x26,
-  DAC960_V1_GetErrorTable =			0x17,
-  DAC960_V1_AddCapacityAsync =			0x2A,
-  DAC960_V1_BackgroundInitializationControl =	0x2B,
-  /* Configuration Related Commands */
-  DAC960_V1_ReadConfig2 =			0x3D,
-  DAC960_V1_WriteConfig2 =			0x3C,
-  DAC960_V1_ReadConfigurationOnDisk =		0x4A,
-  DAC960_V1_WriteConfigurationOnDisk =		0x4B,
-  DAC960_V1_ReadConfiguration =			0x4E,
-  DAC960_V1_ReadBackupConfiguration =		0x4D,
-  DAC960_V1_WriteConfiguration =		0x4F,
-  DAC960_V1_AddConfiguration =			0x4C,
-  DAC960_V1_ReadConfigurationLabel =		0x48,
-  DAC960_V1_WriteConfigurationLabel =		0x49,
-  /* Firmware Upgrade Related Commands */
-  DAC960_V1_LoadImage =				0x20,
-  DAC960_V1_StoreImage =			0x21,
-  DAC960_V1_ProgramImage =			0x22,
-  /* Diagnostic Commands */
-  DAC960_V1_SetDiagnosticMode =			0x31,
-  DAC960_V1_RunDiagnostic =			0x32,
-  /* Subsystem Service Commands */
-  DAC960_V1_GetSubsystemData =			0x70,
-  DAC960_V1_SetSubsystemParameters =		0x71,
-  /* Version 2.xx Firmware Commands */
-  DAC960_V1_Enquiry_Old =			0x05,
-  DAC960_V1_GetDeviceState_Old =		0x14,
-  DAC960_V1_Read_Old =				0x02,
-  DAC960_V1_Write_Old =				0x03,
-  DAC960_V1_ReadWithScatterGather_Old =		0x82,
-  DAC960_V1_WriteWithScatterGather_Old =	0x83
-}
-__attribute__ ((packed))
-DAC960_V1_CommandOpcode_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Command Identifier type.
-*/
-
-typedef unsigned char DAC960_V1_CommandIdentifier_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Command Status Codes.
-*/
-
-#define DAC960_V1_NormalCompletion		0x0000	/* Common */
-#define DAC960_V1_CheckConditionReceived	0x0002	/* Common */
-#define DAC960_V1_NoDeviceAtAddress		0x0102	/* Common */
-#define DAC960_V1_InvalidDeviceAddress		0x0105	/* Common */
-#define DAC960_V1_InvalidParameter		0x0105	/* Common */
-#define DAC960_V1_IrrecoverableDataError	0x0001	/* I/O */
-#define DAC960_V1_LogicalDriveNonexistentOrOffline 0x0002 /* I/O */
-#define DAC960_V1_AccessBeyondEndOfLogicalDrive	0x0105	/* I/O */
-#define DAC960_V1_BadDataEncountered		0x010C	/* I/O */
-#define DAC960_V1_DeviceBusy			0x0008	/* DCDB */
-#define DAC960_V1_DeviceNonresponsive		0x000E	/* DCDB */
-#define DAC960_V1_CommandTerminatedAbnormally	0x000F	/* DCDB */
-#define DAC960_V1_UnableToStartDevice		0x0002	/* Device */
-#define DAC960_V1_InvalidChannelOrTargetOrModifier 0x0105 /* Device */
-#define DAC960_V1_ChannelBusy			0x0106	/* Device */
-#define DAC960_V1_ChannelNotStopped		0x0002	/* Device */
-#define DAC960_V1_AttemptToRebuildOnlineDrive	0x0002	/* Consistency */
-#define DAC960_V1_RebuildBadBlocksEncountered	0x0003	/* Consistency */
-#define DAC960_V1_NewDiskFailedDuringRebuild	0x0004	/* Consistency */
-#define DAC960_V1_RebuildOrCheckAlreadyInProgress 0x0106 /* Consistency */
-#define DAC960_V1_DependentDiskIsDead		0x0002	/* Consistency */
-#define DAC960_V1_InconsistentBlocksFound	0x0003	/* Consistency */
-#define DAC960_V1_InvalidOrNonredundantLogicalDrive 0x0105 /* Consistency */
-#define DAC960_V1_NoRebuildOrCheckInProgress	0x0105	/* Consistency */
-#define DAC960_V1_RebuildInProgress_DataValid	0x0000	/* Consistency */
-#define DAC960_V1_RebuildFailed_LogicalDriveFailure 0x0002 /* Consistency */
-#define DAC960_V1_RebuildFailed_BadBlocksOnOther 0x0003	/* Consistency */
-#define DAC960_V1_RebuildFailed_NewDriveFailed	0x0004	/* Consistency */
-#define DAC960_V1_RebuildSuccessful		0x0100	/* Consistency */
-#define DAC960_V1_RebuildSuccessfullyTerminated	0x0107	/* Consistency */
-#define DAC960_V1_BackgroundInitSuccessful	0x0100	/* Consistency */
-#define DAC960_V1_BackgroundInitAborted		0x0005	/* Consistency */
-#define DAC960_V1_NoBackgroundInitInProgress	0x0105	/* Consistency */
-#define DAC960_V1_AddCapacityInProgress		0x0004	/* Consistency */
-#define DAC960_V1_AddCapacityFailedOrSuspended	0x00F4	/* Consistency */
-#define DAC960_V1_Config2ChecksumError		0x0002	/* Configuration */
-#define DAC960_V1_ConfigurationSuspended	0x0106	/* Configuration */
-#define DAC960_V1_FailedToConfigureNVRAM	0x0105	/* Configuration */
-#define DAC960_V1_ConfigurationNotSavedStateChange 0x0106 /* Configuration */
-#define DAC960_V1_SubsystemNotInstalled		0x0001	/* Subsystem */
-#define DAC960_V1_SubsystemFailed		0x0002	/* Subsystem */
-#define DAC960_V1_SubsystemBusy			0x0106	/* Subsystem */
-
-typedef unsigned short DAC960_V1_CommandStatus_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Enquiry Command reply structure.
-*/
-
-typedef struct DAC960_V1_Enquiry
-{
-  unsigned char NumberOfLogicalDrives;			/* Byte 0 */
-  unsigned int :24;					/* Bytes 1-3 */
-  unsigned int LogicalDriveSizes[32];			/* Bytes 4-131 */
-  unsigned short FlashAge;				/* Bytes 132-133 */
-  struct {
-    bool DeferredWriteError:1;				/* Byte 134 Bit 0 */
-    bool BatteryLow:1;					/* Byte 134 Bit 1 */
-    unsigned char :6;					/* Byte 134 Bits 2-7 */
-  } StatusFlags;
-  unsigned char :8;					/* Byte 135 */
-  unsigned char MinorFirmwareVersion;			/* Byte 136 */
-  unsigned char MajorFirmwareVersion;			/* Byte 137 */
-  enum {
-    DAC960_V1_NoStandbyRebuildOrCheckInProgress =		    0x00,
-    DAC960_V1_StandbyRebuildInProgress =			    0x01,
-    DAC960_V1_BackgroundRebuildInProgress =			    0x02,
-    DAC960_V1_BackgroundCheckInProgress =			    0x03,
-    DAC960_V1_StandbyRebuildCompletedWithError =		    0xFF,
-    DAC960_V1_BackgroundRebuildOrCheckFailed_DriveFailed =	    0xF0,
-    DAC960_V1_BackgroundRebuildOrCheckFailed_LogicalDriveFailed =   0xF1,
-    DAC960_V1_BackgroundRebuildOrCheckFailed_OtherCauses =	    0xF2,
-    DAC960_V1_BackgroundRebuildOrCheckSuccessfullyTerminated =	    0xF3
-  } __attribute__ ((packed)) RebuildFlag;		/* Byte 138 */
-  unsigned char MaxCommands;				/* Byte 139 */
-  unsigned char OfflineLogicalDriveCount;		/* Byte 140 */
-  unsigned char :8;					/* Byte 141 */
-  unsigned short EventLogSequenceNumber;		/* Bytes 142-143 */
-  unsigned char CriticalLogicalDriveCount;		/* Byte 144 */
-  unsigned int :24;					/* Bytes 145-147 */
-  unsigned char DeadDriveCount;				/* Byte 148 */
-  unsigned char :8;					/* Byte 149 */
-  unsigned char RebuildCount;				/* Byte 150 */
-  struct {
-    unsigned char :3;					/* Byte 151 Bits 0-2 */
-    bool BatteryBackupUnitPresent:1;			/* Byte 151 Bit 3 */
-    unsigned char :3;					/* Byte 151 Bits 4-6 */
-    unsigned char :1;					/* Byte 151 Bit 7 */
-  } MiscFlags;
-  struct {
-    unsigned char TargetID;
-    unsigned char Channel;
-  } DeadDrives[21];					/* Bytes 152-194 */
-  unsigned char Reserved[62];				/* Bytes 195-255 */
-}
-__attribute__ ((packed))
-DAC960_V1_Enquiry_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Enquiry2 Command reply structure.
-*/
-
-typedef struct DAC960_V1_Enquiry2
-{
-  struct {
-    enum {
-      DAC960_V1_P_PD_PU =			0x01,
-      DAC960_V1_PL =				0x02,
-      DAC960_V1_PG =				0x10,
-      DAC960_V1_PJ =				0x11,
-      DAC960_V1_PR =				0x12,
-      DAC960_V1_PT =				0x13,
-      DAC960_V1_PTL0 =				0x14,
-      DAC960_V1_PRL =				0x15,
-      DAC960_V1_PTL1 =				0x16,
-      DAC960_V1_1164P =				0x20
-    } __attribute__ ((packed)) SubModel;		/* Byte 0 */
-    unsigned char ActualChannels;			/* Byte 1 */
-    enum {
-      DAC960_V1_FiveChannelBoard =		0x01,
-      DAC960_V1_ThreeChannelBoard =		0x02,
-      DAC960_V1_TwoChannelBoard =		0x03,
-      DAC960_V1_ThreeChannelASIC_DAC =		0x04
-    } __attribute__ ((packed)) Model;			/* Byte 2 */
-    enum {
-      DAC960_V1_EISA_Controller =		0x01,
-      DAC960_V1_MicroChannel_Controller =	0x02,
-      DAC960_V1_PCI_Controller =		0x03,
-      DAC960_V1_SCSItoSCSI_Controller =		0x08
-    } __attribute__ ((packed)) ProductFamily;		/* Byte 3 */
-  } HardwareID;						/* Bytes 0-3 */
-  /* MajorVersion.MinorVersion-FirmwareType-TurnID */
-  struct {
-    unsigned char MajorVersion;				/* Byte 4 */
-    unsigned char MinorVersion;				/* Byte 5 */
-    unsigned char TurnID;				/* Byte 6 */
-    char FirmwareType;					/* Byte 7 */
-  } FirmwareID;						/* Bytes 4-7 */
-  unsigned char :8;					/* Byte 8 */
-  unsigned int :24;					/* Bytes 9-11 */
-  unsigned char ConfiguredChannels;			/* Byte 12 */
-  unsigned char ActualChannels;				/* Byte 13 */
-  unsigned char MaxTargets;				/* Byte 14 */
-  unsigned char MaxTags;				/* Byte 15 */
-  unsigned char MaxLogicalDrives;			/* Byte 16 */
-  unsigned char MaxArms;				/* Byte 17 */
-  unsigned char MaxSpans;				/* Byte 18 */
-  unsigned char :8;					/* Byte 19 */
-  unsigned int :32;					/* Bytes 20-23 */
-  unsigned int MemorySize;				/* Bytes 24-27 */
-  unsigned int CacheSize;				/* Bytes 28-31 */
-  unsigned int FlashMemorySize;				/* Bytes 32-35 */
-  unsigned int NonVolatileMemorySize;			/* Bytes 36-39 */
-  struct {
-    enum {
-      DAC960_V1_RamType_DRAM =			0x0,
-      DAC960_V1_RamType_EDO =			0x1,
-      DAC960_V1_RamType_SDRAM =			0x2,
-      DAC960_V1_RamType_Last =			0x7
-    } __attribute__ ((packed)) RamType:3;		/* Byte 40 Bits 0-2 */
-    enum {
-      DAC960_V1_ErrorCorrection_None =		0x0,
-      DAC960_V1_ErrorCorrection_Parity =	0x1,
-      DAC960_V1_ErrorCorrection_ECC =		0x2,
-      DAC960_V1_ErrorCorrection_Last =		0x7
-    } __attribute__ ((packed)) ErrorCorrection:3;	/* Byte 40 Bits 3-5 */
-    bool FastPageMode:1;				/* Byte 40 Bit 6 */
-    bool LowPowerMemory:1;				/* Byte 40 Bit 7 */
-    unsigned char :8;					/* Bytes 41 */
-  } MemoryType;
-  unsigned short ClockSpeed;				/* Bytes 42-43 */
-  unsigned short MemorySpeed;				/* Bytes 44-45 */
-  unsigned short HardwareSpeed;				/* Bytes 46-47 */
-  unsigned int :32;					/* Bytes 48-51 */
-  unsigned int :32;					/* Bytes 52-55 */
-  unsigned char :8;					/* Byte 56 */
-  unsigned char :8;					/* Byte 57 */
-  unsigned short :16;					/* Bytes 58-59 */
-  unsigned short MaxCommands;				/* Bytes 60-61 */
-  unsigned short MaxScatterGatherEntries;		/* Bytes 62-63 */
-  unsigned short MaxDriveCommands;			/* Bytes 64-65 */
-  unsigned short MaxIODescriptors;			/* Bytes 66-67 */
-  unsigned short MaxCombinedSectors;			/* Bytes 68-69 */
-  unsigned char Latency;				/* Byte 70 */
-  unsigned char :8;					/* Byte 71 */
-  unsigned char SCSITimeout;				/* Byte 72 */
-  unsigned char :8;					/* Byte 73 */
-  unsigned short MinFreeLines;				/* Bytes 74-75 */
-  unsigned int :32;					/* Bytes 76-79 */
-  unsigned int :32;					/* Bytes 80-83 */
-  unsigned char RebuildRateConstant;			/* Byte 84 */
-  unsigned char :8;					/* Byte 85 */
-  unsigned char :8;					/* Byte 86 */
-  unsigned char :8;					/* Byte 87 */
-  unsigned int :32;					/* Bytes 88-91 */
-  unsigned int :32;					/* Bytes 92-95 */
-  unsigned short PhysicalDriveBlockSize;		/* Bytes 96-97 */
-  unsigned short LogicalDriveBlockSize;			/* Bytes 98-99 */
-  unsigned short MaxBlocksPerCommand;			/* Bytes 100-101 */
-  unsigned short BlockFactor;				/* Bytes 102-103 */
-  unsigned short CacheLineSize;				/* Bytes 104-105 */
-  struct {
-    enum {
-      DAC960_V1_Narrow_8bit =			0x0,
-      DAC960_V1_Wide_16bit =			0x1,
-      DAC960_V1_Wide_32bit =			0x2
-    } __attribute__ ((packed)) BusWidth:2;		/* Byte 106 Bits 0-1 */
-    enum {
-      DAC960_V1_Fast =				0x0,
-      DAC960_V1_Ultra =				0x1,
-      DAC960_V1_Ultra2 =			0x2
-    } __attribute__ ((packed)) BusSpeed:2;		/* Byte 106 Bits 2-3 */
-    bool Differential:1;				/* Byte 106 Bit 4 */
-    unsigned char :3;					/* Byte 106 Bits 5-7 */
-  } SCSICapability;
-  unsigned char :8;					/* Byte 107 */
-  unsigned int :32;					/* Bytes 108-111 */
-  unsigned short FirmwareBuildNumber;			/* Bytes 112-113 */
-  enum {
-    DAC960_V1_AEMI =				0x01,
-    DAC960_V1_OEM1 =				0x02,
-    DAC960_V1_OEM2 =				0x04,
-    DAC960_V1_OEM3 =				0x08,
-    DAC960_V1_Conner =				0x10,
-    DAC960_V1_SAFTE =				0x20
-  } __attribute__ ((packed)) FaultManagementType;	/* Byte 114 */
-  unsigned char :8;					/* Byte 115 */
-  struct {
-    bool Clustering:1;					/* Byte 116 Bit 0 */
-    bool MylexOnlineRAIDExpansion:1;			/* Byte 116 Bit 1 */
-    bool ReadAhead:1;					/* Byte 116 Bit 2 */
-    bool BackgroundInitialization:1;			/* Byte 116 Bit 3 */
-    unsigned int :28;					/* Bytes 116-119 */
-  } FirmwareFeatures;
-  unsigned int :32;					/* Bytes 120-123 */
-  unsigned int :32;					/* Bytes 124-127 */
-}
-DAC960_V1_Enquiry2_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Logical Drive State type.
-*/
-
-typedef enum
-{
-  DAC960_V1_LogicalDrive_Online =		0x03,
-  DAC960_V1_LogicalDrive_Critical =		0x04,
-  DAC960_V1_LogicalDrive_Offline =		0xFF
-}
-__attribute__ ((packed))
-DAC960_V1_LogicalDriveState_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Logical Drive Information structure.
-*/
-
-typedef struct DAC960_V1_LogicalDriveInformation
-{
-  unsigned int LogicalDriveSize;			/* Bytes 0-3 */
-  DAC960_V1_LogicalDriveState_T LogicalDriveState;	/* Byte 4 */
-  unsigned char RAIDLevel:7;				/* Byte 5 Bits 0-6 */
-  bool WriteBack:1;					/* Byte 5 Bit 7 */
-  unsigned short :16;					/* Bytes 6-7 */
-}
-DAC960_V1_LogicalDriveInformation_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Get Logical Drive Information Command
-  reply structure.
-*/
-
-typedef DAC960_V1_LogicalDriveInformation_T
-	DAC960_V1_LogicalDriveInformationArray_T[DAC960_MaxLogicalDrives];
-
-
-/*
-  Define the DAC960 V1 Firmware Perform Event Log Operation Types.
-*/
-
-typedef enum
-{
-  DAC960_V1_GetEventLogEntry =			0x00
-}
-__attribute__ ((packed))
-DAC960_V1_PerformEventLogOpType_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Get Event Log Entry Command reply structure.
-*/
-
-typedef struct DAC960_V1_EventLogEntry
-{
-  unsigned char MessageType;				/* Byte 0 */
-  unsigned char MessageLength;				/* Byte 1 */
-  unsigned char TargetID:5;				/* Byte 2 Bits 0-4 */
-  unsigned char Channel:3;				/* Byte 2 Bits 5-7 */
-  unsigned char LogicalUnit:6;				/* Byte 3 Bits 0-5 */
-  unsigned char :2;					/* Byte 3 Bits 6-7 */
-  unsigned short SequenceNumber;			/* Bytes 4-5 */
-  unsigned char ErrorCode:7;				/* Byte 6 Bits 0-6 */
-  bool Valid:1;						/* Byte 6 Bit 7 */
-  unsigned char SegmentNumber;				/* Byte 7 */
-  DAC960_SCSI_RequestSenseKey_T SenseKey:4;		/* Byte 8 Bits 0-3 */
-  unsigned char :1;					/* Byte 8 Bit 4 */
-  bool ILI:1;						/* Byte 8 Bit 5 */
-  bool EOM:1;						/* Byte 8 Bit 6 */
-  bool Filemark:1;					/* Byte 8 Bit 7 */
-  unsigned char Information[4];				/* Bytes 9-12 */
-  unsigned char AdditionalSenseLength;			/* Byte 13 */
-  unsigned char CommandSpecificInformation[4];		/* Bytes 14-17 */
-  unsigned char AdditionalSenseCode;			/* Byte 18 */
-  unsigned char AdditionalSenseCodeQualifier;		/* Byte 19 */
-  unsigned char Dummy[12];				/* Bytes 20-31 */
-}
-DAC960_V1_EventLogEntry_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Physical Device State type.
-*/
-
-typedef enum
-{
-    DAC960_V1_Device_Dead =			0x00,
-    DAC960_V1_Device_WriteOnly =		0x02,
-    DAC960_V1_Device_Online =			0x03,
-    DAC960_V1_Device_Standby =			0x10
-}
-__attribute__ ((packed))
-DAC960_V1_PhysicalDeviceState_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Get Device State Command reply structure.
-  The structure is padded by 2 bytes for compatibility with Version 2.xx
-  Firmware.
-*/
-
-typedef struct DAC960_V1_DeviceState
-{
-  bool Present:1;					/* Byte 0 Bit 0 */
-  unsigned char :7;					/* Byte 0 Bits 1-7 */
-  enum {
-    DAC960_V1_OtherType =			0x0,
-    DAC960_V1_DiskType =			0x1,
-    DAC960_V1_SequentialType =			0x2,
-    DAC960_V1_CDROM_or_WORM_Type =		0x3
-    } __attribute__ ((packed)) DeviceType:2;		/* Byte 1 Bits 0-1 */
-  bool :1;						/* Byte 1 Bit 2 */
-  bool Fast20:1;					/* Byte 1 Bit 3 */
-  bool Sync:1;						/* Byte 1 Bit 4 */
-  bool Fast:1;						/* Byte 1 Bit 5 */
-  bool Wide:1;						/* Byte 1 Bit 6 */
-  bool TaggedQueuingSupported:1;			/* Byte 1 Bit 7 */
-  DAC960_V1_PhysicalDeviceState_T DeviceState;		/* Byte 2 */
-  unsigned char :8;					/* Byte 3 */
-  unsigned char SynchronousMultiplier;			/* Byte 4 */
-  unsigned char SynchronousOffset:5;			/* Byte 5 Bits 0-4 */
-  unsigned char :3;					/* Byte 5 Bits 5-7 */
-  unsigned int DiskSize __attribute__ ((packed));	/* Bytes 6-9 */
-  unsigned short :16;					/* Bytes 10-11 */
-}
-DAC960_V1_DeviceState_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Get Rebuild Progress Command reply structure.
-*/
-
-typedef struct DAC960_V1_RebuildProgress
-{
-  unsigned int LogicalDriveNumber;			/* Bytes 0-3 */
-  unsigned int LogicalDriveSize;			/* Bytes 4-7 */
-  unsigned int RemainingBlocks;				/* Bytes 8-11 */
-}
-DAC960_V1_RebuildProgress_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Background Initialization Status Command
-  reply structure.
-*/
-
-typedef struct DAC960_V1_BackgroundInitializationStatus
-{
-  unsigned int LogicalDriveSize;			/* Bytes 0-3 */
-  unsigned int BlocksCompleted;				/* Bytes 4-7 */
-  unsigned char Reserved1[12];				/* Bytes 8-19 */
-  unsigned int LogicalDriveNumber;			/* Bytes 20-23 */
-  unsigned char RAIDLevel;				/* Byte 24 */
-  enum {
-    DAC960_V1_BackgroundInitializationInvalid =	    0x00,
-    DAC960_V1_BackgroundInitializationStarted =	    0x02,
-    DAC960_V1_BackgroundInitializationInProgress =  0x04,
-    DAC960_V1_BackgroundInitializationSuspended =   0x05,
-    DAC960_V1_BackgroundInitializationCancelled =   0x06
-  } __attribute__ ((packed)) Status;			/* Byte 25 */
-  unsigned char Reserved2[6];				/* Bytes 26-31 */
-}
-DAC960_V1_BackgroundInitializationStatus_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Error Table Entry structure.
-*/
-
-typedef struct DAC960_V1_ErrorTableEntry
-{
-  unsigned char ParityErrorCount;			/* Byte 0 */
-  unsigned char SoftErrorCount;				/* Byte 1 */
-  unsigned char HardErrorCount;				/* Byte 2 */
-  unsigned char MiscErrorCount;				/* Byte 3 */
-}
-DAC960_V1_ErrorTableEntry_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Get Error Table Command reply structure.
-*/
-
-typedef struct DAC960_V1_ErrorTable
-{
-  DAC960_V1_ErrorTableEntry_T
-    ErrorTableEntries[DAC960_V1_MaxChannels][DAC960_V1_MaxTargets];
-}
-DAC960_V1_ErrorTable_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Read Config2 Command reply structure.
-*/
-
-typedef struct DAC960_V1_Config2
-{
-  unsigned char :1;					/* Byte 0 Bit 0 */
-  bool ActiveNegationEnabled:1;				/* Byte 0 Bit 1 */
-  unsigned char :5;					/* Byte 0 Bits 2-6 */
-  bool NoRescanIfResetReceivedDuringScan:1;		/* Byte 0 Bit 7 */
-  bool StorageWorksSupportEnabled:1;			/* Byte 1 Bit 0 */
-  bool HewlettPackardSupportEnabled:1;			/* Byte 1 Bit 1 */
-  bool NoDisconnectOnFirstCommand:1;			/* Byte 1 Bit 2 */
-  unsigned char :2;					/* Byte 1 Bits 3-4 */
-  bool AEMI_ARM:1;					/* Byte 1 Bit 5 */
-  bool AEMI_OFM:1;					/* Byte 1 Bit 6 */
-  unsigned char :1;					/* Byte 1 Bit 7 */
-  enum {
-    DAC960_V1_OEMID_Mylex =			0x00,
-    DAC960_V1_OEMID_IBM =			0x08,
-    DAC960_V1_OEMID_HP =			0x0A,
-    DAC960_V1_OEMID_DEC =			0x0C,
-    DAC960_V1_OEMID_Siemens =			0x10,
-    DAC960_V1_OEMID_Intel =			0x12
-  } __attribute__ ((packed)) OEMID;			/* Byte 2 */
-  unsigned char OEMModelNumber;				/* Byte 3 */
-  unsigned char PhysicalSector;				/* Byte 4 */
-  unsigned char LogicalSector;				/* Byte 5 */
-  unsigned char BlockFactor;				/* Byte 6 */
-  bool ReadAheadEnabled:1;				/* Byte 7 Bit 0 */
-  bool LowBIOSDelay:1;					/* Byte 7 Bit 1 */
-  unsigned char :2;					/* Byte 7 Bits 2-3 */
-  bool ReassignRestrictedToOneSector:1;			/* Byte 7 Bit 4 */
-  unsigned char :1;					/* Byte 7 Bit 5 */
-  bool ForceUnitAccessDuringWriteRecovery:1;		/* Byte 7 Bit 6 */
-  bool EnableLeftSymmetricRAID5Algorithm:1;		/* Byte 7 Bit 7 */
-  unsigned char DefaultRebuildRate;			/* Byte 8 */
-  unsigned char :8;					/* Byte 9 */
-  unsigned char BlocksPerCacheLine;			/* Byte 10 */
-  unsigned char BlocksPerStripe;			/* Byte 11 */
-  struct {
-    enum {
-      DAC960_V1_Async =				0x0,
-      DAC960_V1_Sync_8MHz =			0x1,
-      DAC960_V1_Sync_5MHz =			0x2,
-      DAC960_V1_Sync_10or20MHz =		0x3	/* Byte 11 Bits 0-1 */
-    } __attribute__ ((packed)) Speed:2;
-    bool Force8Bit:1;					/* Byte 11 Bit 2 */
-    bool DisableFast20:1;				/* Byte 11 Bit 3 */
-    unsigned char :3;					/* Byte 11 Bits 4-6 */
-    bool EnableTaggedQueuing:1;				/* Byte 11 Bit 7 */
-  } __attribute__ ((packed)) ChannelParameters[6];	/* Bytes 12-17 */
-  unsigned char SCSIInitiatorID;			/* Byte 18 */
-  unsigned char :8;					/* Byte 19 */
-  enum {
-    DAC960_V1_StartupMode_ControllerSpinUp =	0x00,
-    DAC960_V1_StartupMode_PowerOnSpinUp =	0x01
-  } __attribute__ ((packed)) StartupMode;		/* Byte 20 */
-  unsigned char SimultaneousDeviceSpinUpCount;		/* Byte 21 */
-  unsigned char SecondsDelayBetweenSpinUps;		/* Byte 22 */
-  unsigned char Reserved1[29];				/* Bytes 23-51 */
-  bool BIOSDisabled:1;					/* Byte 52 Bit 0 */
-  bool CDROMBootEnabled:1;				/* Byte 52 Bit 1 */
-  unsigned char :3;					/* Byte 52 Bits 2-4 */
-  enum {
-    DAC960_V1_Geometry_128_32 =			0x0,
-    DAC960_V1_Geometry_255_63 =			0x1,
-    DAC960_V1_Geometry_Reserved1 =		0x2,
-    DAC960_V1_Geometry_Reserved2 =		0x3
-  } __attribute__ ((packed)) DriveGeometry:2;		/* Byte 52 Bits 5-6 */
-  unsigned char :1;					/* Byte 52 Bit 7 */
-  unsigned char Reserved2[9];				/* Bytes 53-61 */
-  unsigned short Checksum;				/* Bytes 62-63 */
-}
-DAC960_V1_Config2_T;
-
-
-/*
-  Define the DAC960 V1 Firmware DCDB request structure.
-*/
-
-typedef struct DAC960_V1_DCDB
-{
-  unsigned char TargetID:4;				 /* Byte 0 Bits 0-3 */
-  unsigned char Channel:4;				 /* Byte 0 Bits 4-7 */
-  enum {
-    DAC960_V1_DCDB_NoDataTransfer =		0,
-    DAC960_V1_DCDB_DataTransferDeviceToSystem = 1,
-    DAC960_V1_DCDB_DataTransferSystemToDevice = 2,
-    DAC960_V1_DCDB_IllegalDataTransfer =	3
-  } __attribute__ ((packed)) Direction:2;		 /* Byte 1 Bits 0-1 */
-  bool EarlyStatus:1;					 /* Byte 1 Bit 2 */
-  unsigned char :1;					 /* Byte 1 Bit 3 */
-  enum {
-    DAC960_V1_DCDB_Timeout_24_hours =		0,
-    DAC960_V1_DCDB_Timeout_10_seconds =		1,
-    DAC960_V1_DCDB_Timeout_60_seconds =		2,
-    DAC960_V1_DCDB_Timeout_10_minutes =		3
-  } __attribute__ ((packed)) Timeout:2;			 /* Byte 1 Bits 4-5 */
-  bool NoAutomaticRequestSense:1;			 /* Byte 1 Bit 6 */
-  bool DisconnectPermitted:1;				 /* Byte 1 Bit 7 */
-  unsigned short TransferLength;			 /* Bytes 2-3 */
-  DAC960_BusAddress32_T BusAddress;			 /* Bytes 4-7 */
-  unsigned char CDBLength:4;				 /* Byte 8 Bits 0-3 */
-  unsigned char TransferLengthHigh4:4;			 /* Byte 8 Bits 4-7 */
-  unsigned char SenseLength;				 /* Byte 9 */
-  unsigned char CDB[12];				 /* Bytes 10-21 */
-  unsigned char SenseData[64];				 /* Bytes 22-85 */
-  unsigned char Status;					 /* Byte 86 */
-  unsigned char :8;					 /* Byte 87 */
-}
-DAC960_V1_DCDB_T;
-
-
-/*
-  Define the DAC960 V1 Firmware Scatter/Gather List Type 1 32 Bit Address
-  32 Bit Byte Count structure.
-*/
-
-typedef struct DAC960_V1_ScatterGatherSegment
-{
-  DAC960_BusAddress32_T SegmentDataPointer;		/* Bytes 0-3 */
-  DAC960_ByteCount32_T SegmentByteCount;		/* Bytes 4-7 */
-}
-DAC960_V1_ScatterGatherSegment_T;
-
-
-/*
-  Define the 13 Byte DAC960 V1 Firmware Command Mailbox structure.  Bytes 13-15
-  are not used.  The Command Mailbox structure is padded to 16 bytes for
-  efficient access.
-*/
-
-typedef union DAC960_V1_CommandMailbox
-{
-  unsigned int Words[4];				/* Words 0-3 */
-  unsigned char Bytes[16];				/* Bytes 0-15 */
-  struct {
-    DAC960_V1_CommandOpcode_T CommandOpcode;		/* Byte 0 */
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 1 */
-    unsigned char Dummy[14];				/* Bytes 2-15 */
-  } __attribute__ ((packed)) Common;
-  struct {
-    DAC960_V1_CommandOpcode_T CommandOpcode;		/* Byte 0 */
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 1 */
-    unsigned char Dummy1[6];				/* Bytes 2-7 */
-    DAC960_BusAddress32_T BusAddress;			/* Bytes 8-11 */
-    unsigned char Dummy2[4];				/* Bytes 12-15 */
-  } __attribute__ ((packed)) Type3;
-  struct {
-    DAC960_V1_CommandOpcode_T CommandOpcode;		/* Byte 0 */
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 1 */
-    unsigned char CommandOpcode2;			/* Byte 2 */
-    unsigned char Dummy1[5];				/* Bytes 3-7 */
-    DAC960_BusAddress32_T BusAddress;			/* Bytes 8-11 */
-    unsigned char Dummy2[4];				/* Bytes 12-15 */
-  } __attribute__ ((packed)) Type3B;
-  struct {
-    DAC960_V1_CommandOpcode_T CommandOpcode;		/* Byte 0 */
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 1 */
-    unsigned char Dummy1[5];				/* Bytes 2-6 */
-    unsigned char LogicalDriveNumber:6;			/* Byte 7 Bits 0-6 */
-    bool AutoRestore:1;					/* Byte 7 Bit 7 */
-    unsigned char Dummy2[8];				/* Bytes 8-15 */
-  } __attribute__ ((packed)) Type3C;
-  struct {
-    DAC960_V1_CommandOpcode_T CommandOpcode;		/* Byte 0 */
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 1 */
-    unsigned char Channel;				/* Byte 2 */
-    unsigned char TargetID;				/* Byte 3 */
-    DAC960_V1_PhysicalDeviceState_T DeviceState:5;	/* Byte 4 Bits 0-4 */
-    unsigned char Modifier:3;				/* Byte 4 Bits 5-7 */
-    unsigned char Dummy1[3];				/* Bytes 5-7 */
-    DAC960_BusAddress32_T BusAddress;			/* Bytes 8-11 */
-    unsigned char Dummy2[4];				/* Bytes 12-15 */
-  } __attribute__ ((packed)) Type3D;
-  struct {
-    DAC960_V1_CommandOpcode_T CommandOpcode;		/* Byte 0 */
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 1 */
-    DAC960_V1_PerformEventLogOpType_T OperationType;	/* Byte 2 */
-    unsigned char OperationQualifier;			/* Byte 3 */
-    unsigned short SequenceNumber;			/* Bytes 4-5 */
-    unsigned char Dummy1[2];				/* Bytes 6-7 */
-    DAC960_BusAddress32_T BusAddress;			/* Bytes 8-11 */
-    unsigned char Dummy2[4];				/* Bytes 12-15 */
-  } __attribute__ ((packed)) Type3E;
-  struct {
-    DAC960_V1_CommandOpcode_T CommandOpcode;		/* Byte 0 */
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 1 */
-    unsigned char Dummy1[2];				/* Bytes 2-3 */
-    unsigned char RebuildRateConstant;			/* Byte 4 */
-    unsigned char Dummy2[3];				/* Bytes 5-7 */
-    DAC960_BusAddress32_T BusAddress;			/* Bytes 8-11 */
-    unsigned char Dummy3[4];				/* Bytes 12-15 */
-  } __attribute__ ((packed)) Type3R;
-  struct {
-    DAC960_V1_CommandOpcode_T CommandOpcode;		/* Byte 0 */
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 1 */
-    unsigned short TransferLength;			/* Bytes 2-3 */
-    unsigned int LogicalBlockAddress;			/* Bytes 4-7 */
-    DAC960_BusAddress32_T BusAddress;			/* Bytes 8-11 */
-    unsigned char LogicalDriveNumber;			/* Byte 12 */
-    unsigned char Dummy[3];				/* Bytes 13-15 */
-  } __attribute__ ((packed)) Type4;
-  struct {
-    DAC960_V1_CommandOpcode_T CommandOpcode;		/* Byte 0 */
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 1 */
-    struct {
-      unsigned short TransferLength:11;			/* Bytes 2-3 */
-      unsigned char LogicalDriveNumber:5;		/* Byte 3 Bits 3-7 */
-    } __attribute__ ((packed)) LD;
-    unsigned int LogicalBlockAddress;			/* Bytes 4-7 */
-    DAC960_BusAddress32_T BusAddress;			/* Bytes 8-11 */
-    unsigned char ScatterGatherCount:6;			/* Byte 12 Bits 0-5 */
-    enum {
-      DAC960_V1_ScatterGather_32BitAddress_32BitByteCount = 0x0,
-      DAC960_V1_ScatterGather_32BitAddress_16BitByteCount = 0x1,
-      DAC960_V1_ScatterGather_32BitByteCount_32BitAddress = 0x2,
-      DAC960_V1_ScatterGather_16BitByteCount_32BitAddress = 0x3
-    } __attribute__ ((packed)) ScatterGatherType:2;	/* Byte 12 Bits 6-7 */
-    unsigned char Dummy[3];				/* Bytes 13-15 */
-  } __attribute__ ((packed)) Type5;
-  struct {
-    DAC960_V1_CommandOpcode_T CommandOpcode;		/* Byte 0 */
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 1 */
-    unsigned char CommandOpcode2;			/* Byte 2 */
-    unsigned char :8;					/* Byte 3 */
-    DAC960_BusAddress32_T CommandMailboxesBusAddress;	/* Bytes 4-7 */
-    DAC960_BusAddress32_T StatusMailboxesBusAddress;	/* Bytes 8-11 */
-    unsigned char Dummy[4];				/* Bytes 12-15 */
-  } __attribute__ ((packed)) TypeX;
-}
-DAC960_V1_CommandMailbox_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Command Opcodes.
-*/
-
-typedef enum
-{
-  DAC960_V2_MemCopy =				0x01,
-  DAC960_V2_SCSI_10_Passthru =			0x02,
-  DAC960_V2_SCSI_255_Passthru =			0x03,
-  DAC960_V2_SCSI_10 =				0x04,
-  DAC960_V2_SCSI_256 =				0x05,
-  DAC960_V2_IOCTL =				0x20
-}
-__attribute__ ((packed))
-DAC960_V2_CommandOpcode_T;
-
-
-/*
-  Define the DAC960 V2 Firmware IOCTL Opcodes.
-*/
-
-typedef enum
-{
-  DAC960_V2_GetControllerInfo =			0x01,
-  DAC960_V2_GetLogicalDeviceInfoValid =		0x03,
-  DAC960_V2_GetPhysicalDeviceInfoValid =	0x05,
-  DAC960_V2_GetHealthStatus =			0x11,
-  DAC960_V2_GetEvent =				0x15,
-  DAC960_V2_StartDiscovery =			0x81,
-  DAC960_V2_SetDeviceState =			0x82,
-  DAC960_V2_RebuildDeviceStart =		0x88,
-  DAC960_V2_RebuildDeviceStop =			0x89,
-  DAC960_V2_ConsistencyCheckStart =		0x8C,
-  DAC960_V2_ConsistencyCheckStop =		0x8D,
-  DAC960_V2_SetMemoryMailbox =			0x8E,
-  DAC960_V2_PauseDevice =			0x92,
-  DAC960_V2_TranslatePhysicalToLogicalDevice =	0xC5
-}
-__attribute__ ((packed))
-DAC960_V2_IOCTL_Opcode_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Command Identifier type.
-*/
-
-typedef unsigned short DAC960_V2_CommandIdentifier_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Command Status Codes.
-*/
-
-#define DAC960_V2_NormalCompletion		0x00
-#define DAC960_V2_AbormalCompletion		0x02
-#define DAC960_V2_DeviceBusy			0x08
-#define DAC960_V2_DeviceNonresponsive		0x0E
-#define DAC960_V2_DeviceNonresponsive2		0x0F
-#define DAC960_V2_DeviceRevervationConflict	0x18
-
-typedef unsigned char DAC960_V2_CommandStatus_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Memory Type structure.
-*/
-
-typedef struct DAC960_V2_MemoryType
-{
-  enum {
-    DAC960_V2_MemoryType_Reserved =		0x00,
-    DAC960_V2_MemoryType_DRAM =			0x01,
-    DAC960_V2_MemoryType_EDRAM =		0x02,
-    DAC960_V2_MemoryType_EDO =			0x03,
-    DAC960_V2_MemoryType_SDRAM =		0x04,
-    DAC960_V2_MemoryType_Last =			0x1F
-  } __attribute__ ((packed)) MemoryType:5;		/* Byte 0 Bits 0-4 */
-  bool :1;						/* Byte 0 Bit 5 */
-  bool MemoryParity:1;					/* Byte 0 Bit 6 */
-  bool MemoryECC:1;					/* Byte 0 Bit 7 */
-}
-DAC960_V2_MemoryType_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Processor Type structure.
-*/
-
-typedef enum
-{
-  DAC960_V2_ProcessorType_i960CA =		0x01,
-  DAC960_V2_ProcessorType_i960RD =		0x02,
-  DAC960_V2_ProcessorType_i960RN =		0x03,
-  DAC960_V2_ProcessorType_i960RP =		0x04,
-  DAC960_V2_ProcessorType_NorthBay =		0x05,
-  DAC960_V2_ProcessorType_StrongArm =		0x06,
-  DAC960_V2_ProcessorType_i960RM =		0x07
-}
-__attribute__ ((packed))
-DAC960_V2_ProcessorType_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Get Controller Info reply structure.
-*/
-
-typedef struct DAC960_V2_ControllerInfo
-{
-  unsigned char :8;					/* Byte 0 */
-  enum {
-    DAC960_V2_SCSI_Bus =			0x00,
-    DAC960_V2_Fibre_Bus =			0x01,
-    DAC960_V2_PCI_Bus =				0x03
-  } __attribute__ ((packed)) BusInterfaceType;		/* Byte 1 */
-  enum {
-    DAC960_V2_DAC960E =				0x01,
-    DAC960_V2_DAC960M =				0x08,
-    DAC960_V2_DAC960PD =			0x10,
-    DAC960_V2_DAC960PL =			0x11,
-    DAC960_V2_DAC960PU =			0x12,
-    DAC960_V2_DAC960PE =			0x13,
-    DAC960_V2_DAC960PG =			0x14,
-    DAC960_V2_DAC960PJ =			0x15,
-    DAC960_V2_DAC960PTL0 =			0x16,
-    DAC960_V2_DAC960PR =			0x17,
-    DAC960_V2_DAC960PRL =			0x18,
-    DAC960_V2_DAC960PT =			0x19,
-    DAC960_V2_DAC1164P =			0x1A,
-    DAC960_V2_DAC960PTL1 =			0x1B,
-    DAC960_V2_EXR2000P =			0x1C,
-    DAC960_V2_EXR3000P =			0x1D,
-    DAC960_V2_AcceleRAID352 =			0x1E,
-    DAC960_V2_AcceleRAID170 =			0x1F,
-    DAC960_V2_AcceleRAID160 =			0x20,
-    DAC960_V2_DAC960S =				0x60,
-    DAC960_V2_DAC960SU =			0x61,
-    DAC960_V2_DAC960SX =			0x62,
-    DAC960_V2_DAC960SF =			0x63,
-    DAC960_V2_DAC960SS =			0x64,
-    DAC960_V2_DAC960FL =			0x65,
-    DAC960_V2_DAC960LL =			0x66,
-    DAC960_V2_DAC960FF =			0x67,
-    DAC960_V2_DAC960HP =			0x68,
-    DAC960_V2_RAIDBRICK =			0x69,
-    DAC960_V2_METEOR_FL =			0x6A,
-    DAC960_V2_METEOR_FF =			0x6B
-  } __attribute__ ((packed)) ControllerType;		/* Byte 2 */
-  unsigned char :8;					/* Byte 3 */
-  unsigned short BusInterfaceSpeedMHz;			/* Bytes 4-5 */
-  unsigned char BusWidthBits;				/* Byte 6 */
-  unsigned char FlashCodeTypeOrProductID;		/* Byte 7 */
-  unsigned char NumberOfHostPortsPresent;		/* Byte 8 */
-  unsigned char Reserved1[7];				/* Bytes 9-15 */
-  unsigned char BusInterfaceName[16];			/* Bytes 16-31 */
-  unsigned char ControllerName[16];			/* Bytes 32-47 */
-  unsigned char Reserved2[16];				/* Bytes 48-63 */
-  /* Firmware Release Information */
-  unsigned char FirmwareMajorVersion;			/* Byte 64 */
-  unsigned char FirmwareMinorVersion;			/* Byte 65 */
-  unsigned char FirmwareTurnNumber;			/* Byte 66 */
-  unsigned char FirmwareBuildNumber;			/* Byte 67 */
-  unsigned char FirmwareReleaseDay;			/* Byte 68 */
-  unsigned char FirmwareReleaseMonth;			/* Byte 69 */
-  unsigned char FirmwareReleaseYearHigh2Digits;		/* Byte 70 */
-  unsigned char FirmwareReleaseYearLow2Digits;		/* Byte 71 */
-  /* Hardware Release Information */
-  unsigned char HardwareRevision;			/* Byte 72 */
-  unsigned int :24;					/* Bytes 73-75 */
-  unsigned char HardwareReleaseDay;			/* Byte 76 */
-  unsigned char HardwareReleaseMonth;			/* Byte 77 */
-  unsigned char HardwareReleaseYearHigh2Digits;		/* Byte 78 */
-  unsigned char HardwareReleaseYearLow2Digits;		/* Byte 79 */
-  /* Hardware Manufacturing Information */
-  unsigned char ManufacturingBatchNumber;		/* Byte 80 */
-  unsigned char :8;					/* Byte 81 */
-  unsigned char ManufacturingPlantNumber;		/* Byte 82 */
-  unsigned char :8;					/* Byte 83 */
-  unsigned char HardwareManufacturingDay;		/* Byte 84 */
-  unsigned char HardwareManufacturingMonth;		/* Byte 85 */
-  unsigned char HardwareManufacturingYearHigh2Digits;	/* Byte 86 */
-  unsigned char HardwareManufacturingYearLow2Digits;	/* Byte 87 */
-  unsigned char MaximumNumberOfPDDperXLD;		/* Byte 88 */
-  unsigned char MaximumNumberOfILDperXLD;		/* Byte 89 */
-  unsigned short NonvolatileMemorySizeKB;		/* Bytes 90-91 */
-  unsigned char MaximumNumberOfXLD;			/* Byte 92 */
-  unsigned int :24;					/* Bytes 93-95 */
-  /* Unique Information per Controller */
-  unsigned char ControllerSerialNumber[16];		/* Bytes 96-111 */
-  unsigned char Reserved3[16];				/* Bytes 112-127 */
-  /* Vendor Information */
-  unsigned int :24;					/* Bytes 128-130 */
-  unsigned char OEM_Code;				/* Byte 131 */
-  unsigned char VendorName[16];				/* Bytes 132-147 */
-  /* Other Physical/Controller/Operation Information */
-  bool BBU_Present:1;					/* Byte 148 Bit 0 */
-  bool ActiveActiveClusteringMode:1;			/* Byte 148 Bit 1 */
-  unsigned char :6;					/* Byte 148 Bits 2-7 */
-  unsigned char :8;					/* Byte 149 */
-  unsigned short :16;					/* Bytes 150-151 */
-  /* Physical Device Scan Information */
-  bool PhysicalScanActive:1;				/* Byte 152 Bit 0 */
-  unsigned char :7;					/* Byte 152 Bits 1-7 */
-  unsigned char PhysicalDeviceChannelNumber;		/* Byte 153 */
-  unsigned char PhysicalDeviceTargetID;			/* Byte 154 */
-  unsigned char PhysicalDeviceLogicalUnit;		/* Byte 155 */
-  /* Maximum Command Data Transfer Sizes */
-  unsigned short MaximumDataTransferSizeInBlocks;	/* Bytes 156-157 */
-  unsigned short MaximumScatterGatherEntries;		/* Bytes 158-159 */
-  /* Logical/Physical Device Counts */
-  unsigned short LogicalDevicesPresent;			/* Bytes 160-161 */
-  unsigned short LogicalDevicesCritical;		/* Bytes 162-163 */
-  unsigned short LogicalDevicesOffline;			/* Bytes 164-165 */
-  unsigned short PhysicalDevicesPresent;		/* Bytes 166-167 */
-  unsigned short PhysicalDisksPresent;			/* Bytes 168-169 */
-  unsigned short PhysicalDisksCritical;			/* Bytes 170-171 */
-  unsigned short PhysicalDisksOffline;			/* Bytes 172-173 */
-  unsigned short MaximumParallelCommands;		/* Bytes 174-175 */
-  /* Channel and Target ID Information */
-  unsigned char NumberOfPhysicalChannelsPresent;	/* Byte 176 */
-  unsigned char NumberOfVirtualChannelsPresent;		/* Byte 177 */
-  unsigned char NumberOfPhysicalChannelsPossible;	/* Byte 178 */
-  unsigned char NumberOfVirtualChannelsPossible;	/* Byte 179 */
-  unsigned char MaximumTargetsPerChannel[16];		/* Bytes 180-195 */
-  unsigned char Reserved4[12];				/* Bytes 196-207 */
-  /* Memory/Cache Information */
-  unsigned short MemorySizeMB;				/* Bytes 208-209 */
-  unsigned short CacheSizeMB;				/* Bytes 210-211 */
-  unsigned int ValidCacheSizeInBytes;			/* Bytes 212-215 */
-  unsigned int DirtyCacheSizeInBytes;			/* Bytes 216-219 */
-  unsigned short MemorySpeedMHz;			/* Bytes 220-221 */
-  unsigned char MemoryDataWidthBits;			/* Byte 222 */
-  DAC960_V2_MemoryType_T MemoryType;			/* Byte 223 */
-  unsigned char CacheMemoryTypeName[16];		/* Bytes 224-239 */
-  /* Execution Memory Information */
-  unsigned short ExecutionMemorySizeMB;			/* Bytes 240-241 */
-  unsigned short ExecutionL2CacheSizeMB;		/* Bytes 242-243 */
-  unsigned char Reserved5[8];				/* Bytes 244-251 */
-  unsigned short ExecutionMemorySpeedMHz;		/* Bytes 252-253 */
-  unsigned char ExecutionMemoryDataWidthBits;		/* Byte 254 */
-  DAC960_V2_MemoryType_T ExecutionMemoryType;		/* Byte 255 */
-  unsigned char ExecutionMemoryTypeName[16];		/* Bytes 256-271 */
-  /* First CPU Type Information */
-  unsigned short FirstProcessorSpeedMHz;		/* Bytes 272-273 */
-  DAC960_V2_ProcessorType_T FirstProcessorType;		/* Byte 274 */
-  unsigned char FirstProcessorCount;			/* Byte 275 */
-  unsigned char Reserved6[12];				/* Bytes 276-287 */
-  unsigned char FirstProcessorName[16];			/* Bytes 288-303 */
-  /* Second CPU Type Information */
-  unsigned short SecondProcessorSpeedMHz;		/* Bytes 304-305 */
-  DAC960_V2_ProcessorType_T SecondProcessorType;	/* Byte 306 */
-  unsigned char SecondProcessorCount;			/* Byte 307 */
-  unsigned char Reserved7[12];				/* Bytes 308-319 */
-  unsigned char SecondProcessorName[16];		/* Bytes 320-335 */
-  /* Debugging/Profiling/Command Time Tracing Information */
-  unsigned short CurrentProfilingDataPageNumber;	/* Bytes 336-337 */
-  unsigned short ProgramsAwaitingProfilingData;		/* Bytes 338-339 */
-  unsigned short CurrentCommandTimeTraceDataPageNumber;	/* Bytes 340-341 */
-  unsigned short ProgramsAwaitingCommandTimeTraceData;	/* Bytes 342-343 */
-  unsigned char Reserved8[8];				/* Bytes 344-351 */
-  /* Error Counters on Physical Devices */
-  unsigned short PhysicalDeviceBusResets;		/* Bytes 352-353 */
-  unsigned short PhysicalDeviceParityErrors;		/* Bytes 355-355 */
-  unsigned short PhysicalDeviceSoftErrors;		/* Bytes 356-357 */
-  unsigned short PhysicalDeviceCommandsFailed;		/* Bytes 358-359 */
-  unsigned short PhysicalDeviceMiscellaneousErrors;	/* Bytes 360-361 */
-  unsigned short PhysicalDeviceCommandTimeouts;		/* Bytes 362-363 */
-  unsigned short PhysicalDeviceSelectionTimeouts;	/* Bytes 364-365 */
-  unsigned short PhysicalDeviceRetriesDone;		/* Bytes 366-367 */
-  unsigned short PhysicalDeviceAbortsDone;		/* Bytes 368-369 */
-  unsigned short PhysicalDeviceHostCommandAbortsDone;	/* Bytes 370-371 */
-  unsigned short PhysicalDevicePredictedFailuresDetected; /* Bytes 372-373 */
-  unsigned short PhysicalDeviceHostCommandsFailed;	/* Bytes 374-375 */
-  unsigned short PhysicalDeviceHardErrors;		/* Bytes 376-377 */
-  unsigned char Reserved9[6];				/* Bytes 378-383 */
-  /* Error Counters on Logical Devices */
-  unsigned short LogicalDeviceSoftErrors;		/* Bytes 384-385 */
-  unsigned short LogicalDeviceCommandsFailed;		/* Bytes 386-387 */
-  unsigned short LogicalDeviceHostCommandAbortsDone;	/* Bytes 388-389 */
-  unsigned short :16;					/* Bytes 390-391 */
-  /* Error Counters on Controller */
-  unsigned short ControllerMemoryErrors;		/* Bytes 392-393 */
-  unsigned short ControllerHostCommandAbortsDone;	/* Bytes 394-395 */
-  unsigned int :32;					/* Bytes 396-399 */
-  /* Long Duration Activity Information */
-  unsigned short BackgroundInitializationsActive;	/* Bytes 400-401 */
-  unsigned short LogicalDeviceInitializationsActive;	/* Bytes 402-403 */
-  unsigned short PhysicalDeviceInitializationsActive;	/* Bytes 404-405 */
-  unsigned short ConsistencyChecksActive;		/* Bytes 406-407 */
-  unsigned short RebuildsActive;			/* Bytes 408-409 */
-  unsigned short OnlineExpansionsActive;		/* Bytes 410-411 */
-  unsigned short PatrolActivitiesActive;		/* Bytes 412-413 */
-  unsigned short :16;					/* Bytes 414-415 */
-  /* Flash ROM Information */
-  unsigned char FlashType;				/* Byte 416 */
-  unsigned char :8;					/* Byte 417 */
-  unsigned short FlashSizeMB;				/* Bytes 418-419 */
-  unsigned int FlashLimit;				/* Bytes 420-423 */
-  unsigned int FlashCount;				/* Bytes 424-427 */
-  unsigned int :32;					/* Bytes 428-431 */
-  unsigned char FlashTypeName[16];			/* Bytes 432-447 */
-  /* Firmware Run Time Information */
-  unsigned char RebuildRate;				/* Byte 448 */
-  unsigned char BackgroundInitializationRate;		/* Byte 449 */
-  unsigned char ForegroundInitializationRate;		/* Byte 450 */
-  unsigned char ConsistencyCheckRate;			/* Byte 451 */
-  unsigned int :32;					/* Bytes 452-455 */
-  unsigned int MaximumDP;				/* Bytes 456-459 */
-  unsigned int FreeDP;					/* Bytes 460-463 */
-  unsigned int MaximumIOP;				/* Bytes 464-467 */
-  unsigned int FreeIOP;					/* Bytes 468-471 */
-  unsigned short MaximumCombLengthInBlocks;		/* Bytes 472-473 */
-  unsigned short NumberOfConfigurationGroups;		/* Bytes 474-475 */
-  bool InstallationAbortStatus:1;			/* Byte 476 Bit 0 */
-  bool MaintenanceModeStatus:1;				/* Byte 476 Bit 1 */
-  unsigned int :24;					/* Bytes 476-479 */
-  unsigned char Reserved10[32];				/* Bytes 480-511 */
-  unsigned char Reserved11[512];			/* Bytes 512-1023 */
-}
-DAC960_V2_ControllerInfo_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Logical Device State type.
-*/
-
-typedef enum
-{
-  DAC960_V2_LogicalDevice_Online =		0x01,
-  DAC960_V2_LogicalDevice_Offline =		0x08,
-  DAC960_V2_LogicalDevice_Critical =		0x09
-}
-__attribute__ ((packed))
-DAC960_V2_LogicalDeviceState_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Get Logical Device Info reply structure.
-*/
-
-typedef struct DAC960_V2_LogicalDeviceInfo
-{
-  unsigned char :8;					/* Byte 0 */
-  unsigned char Channel;				/* Byte 1 */
-  unsigned char TargetID;				/* Byte 2 */
-  unsigned char LogicalUnit;				/* Byte 3 */
-  DAC960_V2_LogicalDeviceState_T LogicalDeviceState;	/* Byte 4 */
-  unsigned char RAIDLevel;				/* Byte 5 */
-  unsigned char StripeSize;				/* Byte 6 */
-  unsigned char CacheLineSize;				/* Byte 7 */
-  struct {
-    enum {
-      DAC960_V2_ReadCacheDisabled =		0x0,
-      DAC960_V2_ReadCacheEnabled =		0x1,
-      DAC960_V2_ReadAheadEnabled =		0x2,
-      DAC960_V2_IntelligentReadAheadEnabled =	0x3,
-      DAC960_V2_ReadCache_Last =		0x7
-    } __attribute__ ((packed)) ReadCache:3;		/* Byte 8 Bits 0-2 */
-    enum {
-      DAC960_V2_WriteCacheDisabled =		0x0,
-      DAC960_V2_LogicalDeviceReadOnly =		0x1,
-      DAC960_V2_WriteCacheEnabled =		0x2,
-      DAC960_V2_IntelligentWriteCacheEnabled =	0x3,
-      DAC960_V2_WriteCache_Last =		0x7
-    } __attribute__ ((packed)) WriteCache:3;		/* Byte 8 Bits 3-5 */
-    bool :1;						/* Byte 8 Bit 6 */
-    bool LogicalDeviceInitialized:1;			/* Byte 8 Bit 7 */
-  } LogicalDeviceControl;				/* Byte 8 */
-  /* Logical Device Operations Status */
-  bool ConsistencyCheckInProgress:1;			/* Byte 9 Bit 0 */
-  bool RebuildInProgress:1;				/* Byte 9 Bit 1 */
-  bool BackgroundInitializationInProgress:1;		/* Byte 9 Bit 2 */
-  bool ForegroundInitializationInProgress:1;		/* Byte 9 Bit 3 */
-  bool DataMigrationInProgress:1;			/* Byte 9 Bit 4 */
-  bool PatrolOperationInProgress:1;			/* Byte 9 Bit 5 */
-  unsigned char :2;					/* Byte 9 Bits 6-7 */
-  unsigned char RAID5WriteUpdate;			/* Byte 10 */
-  unsigned char RAID5Algorithm;				/* Byte 11 */
-  unsigned short LogicalDeviceNumber;			/* Bytes 12-13 */
-  /* BIOS Info */
-  bool BIOSDisabled:1;					/* Byte 14 Bit 0 */
-  bool CDROMBootEnabled:1;				/* Byte 14 Bit 1 */
-  bool DriveCoercionEnabled:1;				/* Byte 14 Bit 2 */
-  bool WriteSameDisabled:1;				/* Byte 14 Bit 3 */
-  bool HBA_ModeEnabled:1;				/* Byte 14 Bit 4 */
-  enum {
-    DAC960_V2_Geometry_128_32 =			0x0,
-    DAC960_V2_Geometry_255_63 =			0x1,
-    DAC960_V2_Geometry_Reserved1 =		0x2,
-    DAC960_V2_Geometry_Reserved2 =		0x3
-  } __attribute__ ((packed)) DriveGeometry:2;		/* Byte 14 Bits 5-6 */
-  bool SuperReadAheadEnabled:1;				/* Byte 14 Bit 7 */
-  unsigned char :8;					/* Byte 15 */
-  /* Error Counters */
-  unsigned short SoftErrors;				/* Bytes 16-17 */
-  unsigned short CommandsFailed;			/* Bytes 18-19 */
-  unsigned short HostCommandAbortsDone;			/* Bytes 20-21 */
-  unsigned short DeferredWriteErrors;			/* Bytes 22-23 */
-  unsigned int :32;					/* Bytes 24-27 */
-  unsigned int :32;					/* Bytes 28-31 */
-  /* Device Size Information */
-  unsigned short :16;					/* Bytes 32-33 */
-  unsigned short DeviceBlockSizeInBytes;		/* Bytes 34-35 */
-  unsigned int OriginalDeviceSize;			/* Bytes 36-39 */
-  unsigned int ConfigurableDeviceSize;			/* Bytes 40-43 */
-  unsigned int :32;					/* Bytes 44-47 */
-  unsigned char LogicalDeviceName[32];			/* Bytes 48-79 */
-  unsigned char SCSI_InquiryData[36];			/* Bytes 80-115 */
-  unsigned char Reserved1[12];				/* Bytes 116-127 */
-  DAC960_ByteCount64_T LastReadBlockNumber;		/* Bytes 128-135 */
-  DAC960_ByteCount64_T LastWrittenBlockNumber;		/* Bytes 136-143 */
-  DAC960_ByteCount64_T ConsistencyCheckBlockNumber;	/* Bytes 144-151 */
-  DAC960_ByteCount64_T RebuildBlockNumber;		/* Bytes 152-159 */
-  DAC960_ByteCount64_T BackgroundInitializationBlockNumber; /* Bytes 160-167 */
-  DAC960_ByteCount64_T ForegroundInitializationBlockNumber; /* Bytes 168-175 */
-  DAC960_ByteCount64_T DataMigrationBlockNumber;	/* Bytes 176-183 */
-  DAC960_ByteCount64_T PatrolOperationBlockNumber;	/* Bytes 184-191 */
-  unsigned char Reserved2[64];				/* Bytes 192-255 */
-}
-DAC960_V2_LogicalDeviceInfo_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Physical Device State type.
-*/
-
-typedef enum
-{
-    DAC960_V2_Device_Unconfigured =		0x00,
-    DAC960_V2_Device_Online =			0x01,
-    DAC960_V2_Device_Rebuild =			0x03,
-    DAC960_V2_Device_Missing =			0x04,
-    DAC960_V2_Device_Critical =			0x05,
-    DAC960_V2_Device_Dead =			0x08,
-    DAC960_V2_Device_SuspectedDead =		0x0C,
-    DAC960_V2_Device_CommandedOffline =		0x10,
-    DAC960_V2_Device_Standby =			0x21,
-    DAC960_V2_Device_InvalidState =		0xFF
-}
-__attribute__ ((packed))
-DAC960_V2_PhysicalDeviceState_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Get Physical Device Info reply structure.
-*/
-
-typedef struct DAC960_V2_PhysicalDeviceInfo
-{
-  unsigned char :8;					/* Byte 0 */
-  unsigned char Channel;				/* Byte 1 */
-  unsigned char TargetID;				/* Byte 2 */
-  unsigned char LogicalUnit;				/* Byte 3 */
-  /* Configuration Status Bits */
-  bool PhysicalDeviceFaultTolerant:1;			/* Byte 4 Bit 0 */
-  bool PhysicalDeviceConnected:1;			/* Byte 4 Bit 1 */
-  bool PhysicalDeviceLocalToController:1;		/* Byte 4 Bit 2 */
-  unsigned char :5;					/* Byte 4 Bits 3-7 */
-  /* Multiple Host/Controller Status Bits */
-  bool RemoteHostSystemDead:1;				/* Byte 5 Bit 0 */
-  bool RemoteControllerDead:1;				/* Byte 5 Bit 1 */
-  unsigned char :6;					/* Byte 5 Bits 2-7 */
-  DAC960_V2_PhysicalDeviceState_T PhysicalDeviceState;	/* Byte 6 */
-  unsigned char NegotiatedDataWidthBits;		/* Byte 7 */
-  unsigned short NegotiatedSynchronousMegaTransfers;	/* Bytes 8-9 */
-  /* Multiported Physical Device Information */
-  unsigned char NumberOfPortConnections;		/* Byte 10 */
-  unsigned char DriveAccessibilityBitmap;		/* Byte 11 */
-  unsigned int :32;					/* Bytes 12-15 */
-  unsigned char NetworkAddress[16];			/* Bytes 16-31 */
-  unsigned short MaximumTags;				/* Bytes 32-33 */
-  /* Physical Device Operations Status */
-  bool ConsistencyCheckInProgress:1;			/* Byte 34 Bit 0 */
-  bool RebuildInProgress:1;				/* Byte 34 Bit 1 */
-  bool MakingDataConsistentInProgress:1;		/* Byte 34 Bit 2 */
-  bool PhysicalDeviceInitializationInProgress:1;	/* Byte 34 Bit 3 */
-  bool DataMigrationInProgress:1;			/* Byte 34 Bit 4 */
-  bool PatrolOperationInProgress:1;			/* Byte 34 Bit 5 */
-  unsigned char :2;					/* Byte 34 Bits 6-7 */
-  unsigned char LongOperationStatus;			/* Byte 35 */
-  unsigned char ParityErrors;				/* Byte 36 */
-  unsigned char SoftErrors;				/* Byte 37 */
-  unsigned char HardErrors;				/* Byte 38 */
-  unsigned char MiscellaneousErrors;			/* Byte 39 */
-  unsigned char CommandTimeouts;			/* Byte 40 */
-  unsigned char Retries;				/* Byte 41 */
-  unsigned char Aborts;					/* Byte 42 */
-  unsigned char PredictedFailuresDetected;		/* Byte 43 */
-  unsigned int :32;					/* Bytes 44-47 */
-  unsigned short :16;					/* Bytes 48-49 */
-  unsigned short DeviceBlockSizeInBytes;		/* Bytes 50-51 */
-  unsigned int OriginalDeviceSize;			/* Bytes 52-55 */
-  unsigned int ConfigurableDeviceSize;			/* Bytes 56-59 */
-  unsigned int :32;					/* Bytes 60-63 */
-  unsigned char PhysicalDeviceName[16];			/* Bytes 64-79 */
-  unsigned char Reserved1[16];				/* Bytes 80-95 */
-  unsigned char Reserved2[32];				/* Bytes 96-127 */
-  unsigned char SCSI_InquiryData[36];			/* Bytes 128-163 */
-  unsigned char Reserved3[20];				/* Bytes 164-183 */
-  unsigned char Reserved4[8];				/* Bytes 184-191 */
-  DAC960_ByteCount64_T LastReadBlockNumber;		/* Bytes 192-199 */
-  DAC960_ByteCount64_T LastWrittenBlockNumber;		/* Bytes 200-207 */
-  DAC960_ByteCount64_T ConsistencyCheckBlockNumber;	/* Bytes 208-215 */
-  DAC960_ByteCount64_T RebuildBlockNumber;		/* Bytes 216-223 */
-  DAC960_ByteCount64_T MakingDataConsistentBlockNumber;	/* Bytes 224-231 */
-  DAC960_ByteCount64_T DeviceInitializationBlockNumber; /* Bytes 232-239 */
-  DAC960_ByteCount64_T DataMigrationBlockNumber;	/* Bytes 240-247 */
-  DAC960_ByteCount64_T PatrolOperationBlockNumber;	/* Bytes 248-255 */
-  unsigned char Reserved5[256];				/* Bytes 256-511 */
-}
-DAC960_V2_PhysicalDeviceInfo_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Health Status Buffer structure.
-*/
-
-typedef struct DAC960_V2_HealthStatusBuffer
-{
-  unsigned int MicrosecondsFromControllerStartTime;	/* Bytes 0-3 */
-  unsigned int MillisecondsFromControllerStartTime;	/* Bytes 4-7 */
-  unsigned int SecondsFrom1January1970;			/* Bytes 8-11 */
-  unsigned int :32;					/* Bytes 12-15 */
-  unsigned int StatusChangeCounter;			/* Bytes 16-19 */
-  unsigned int :32;					/* Bytes 20-23 */
-  unsigned int DebugOutputMessageBufferIndex;		/* Bytes 24-27 */
-  unsigned int CodedMessageBufferIndex;			/* Bytes 28-31 */
-  unsigned int CurrentTimeTracePageNumber;		/* Bytes 32-35 */
-  unsigned int CurrentProfilerPageNumber;		/* Bytes 36-39 */
-  unsigned int NextEventSequenceNumber;			/* Bytes 40-43 */
-  unsigned int :32;					/* Bytes 44-47 */
-  unsigned char Reserved1[16];				/* Bytes 48-63 */
-  unsigned char Reserved2[64];				/* Bytes 64-127 */
-}
-DAC960_V2_HealthStatusBuffer_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Get Event reply structure.
-*/
-
-typedef struct DAC960_V2_Event
-{
-  unsigned int EventSequenceNumber;			/* Bytes 0-3 */
-  unsigned int EventTime;				/* Bytes 4-7 */
-  unsigned int EventCode;				/* Bytes 8-11 */
-  unsigned char :8;					/* Byte 12 */
-  unsigned char Channel;				/* Byte 13 */
-  unsigned char TargetID;				/* Byte 14 */
-  unsigned char LogicalUnit;				/* Byte 15 */
-  unsigned int :32;					/* Bytes 16-19 */
-  unsigned int EventSpecificParameter;			/* Bytes 20-23 */
-  unsigned char RequestSenseData[40];			/* Bytes 24-63 */
-}
-DAC960_V2_Event_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Command Control Bits structure.
-*/
-
-typedef struct DAC960_V2_CommandControlBits
-{
-  bool ForceUnitAccess:1;				/* Byte 0 Bit 0 */
-  bool DisablePageOut:1;				/* Byte 0 Bit 1 */
-  bool :1;						/* Byte 0 Bit 2 */
-  bool AdditionalScatterGatherListMemory:1;		/* Byte 0 Bit 3 */
-  bool DataTransferControllerToHost:1;			/* Byte 0 Bit 4 */
-  bool :1;						/* Byte 0 Bit 5 */
-  bool NoAutoRequestSense:1;				/* Byte 0 Bit 6 */
-  bool DisconnectProhibited:1;				/* Byte 0 Bit 7 */
-}
-DAC960_V2_CommandControlBits_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Command Timeout structure.
-*/
-
-typedef struct DAC960_V2_CommandTimeout
-{
-  unsigned char TimeoutValue:6;				/* Byte 0 Bits 0-5 */
-  enum {
-    DAC960_V2_TimeoutScale_Seconds =		0,
-    DAC960_V2_TimeoutScale_Minutes =		1,
-    DAC960_V2_TimeoutScale_Hours =		2,
-    DAC960_V2_TimeoutScale_Reserved =		3
-  } __attribute__ ((packed)) TimeoutScale:2;		/* Byte 0 Bits 6-7 */
-}
-DAC960_V2_CommandTimeout_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Physical Device structure.
-*/
-
-typedef struct DAC960_V2_PhysicalDevice
-{
-  unsigned char LogicalUnit;				/* Byte 0 */
-  unsigned char TargetID;				/* Byte 1 */
-  unsigned char Channel:3;				/* Byte 2 Bits 0-2 */
-  unsigned char Controller:5;				/* Byte 2 Bits 3-7 */
-}
-__attribute__ ((packed))
-DAC960_V2_PhysicalDevice_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Logical Device structure.
-*/
-
-typedef struct DAC960_V2_LogicalDevice
-{
-  unsigned short LogicalDeviceNumber;			/* Bytes 0-1 */
-  unsigned char :3;					/* Byte 2 Bits 0-2 */
-  unsigned char Controller:5;				/* Byte 2 Bits 3-7 */
-}
-__attribute__ ((packed))
-DAC960_V2_LogicalDevice_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Operation Device type.
-*/
-
-typedef enum
-{
-  DAC960_V2_Physical_Device =			0x00,
-  DAC960_V2_RAID_Device =			0x01,
-  DAC960_V2_Physical_Channel =			0x02,
-  DAC960_V2_RAID_Channel =			0x03,
-  DAC960_V2_Physical_Controller =		0x04,
-  DAC960_V2_RAID_Controller =			0x05,
-  DAC960_V2_Configuration_Group =		0x10,
-  DAC960_V2_Enclosure =				0x11
-}
-__attribute__ ((packed))
-DAC960_V2_OperationDevice_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Translate Physical To Logical Device structure.
-*/
-
-typedef struct DAC960_V2_PhysicalToLogicalDevice
-{
-  unsigned short LogicalDeviceNumber;			/* Bytes 0-1 */
-  unsigned short :16;					/* Bytes 2-3 */
-  unsigned char PreviousBootController;			/* Byte 4 */
-  unsigned char PreviousBootChannel;			/* Byte 5 */
-  unsigned char PreviousBootTargetID;			/* Byte 6 */
-  unsigned char PreviousBootLogicalUnit;		/* Byte 7 */
-}
-DAC960_V2_PhysicalToLogicalDevice_T;
-
-
-
-/*
-  Define the DAC960 V2 Firmware Scatter/Gather List Entry structure.
-*/
-
-typedef struct DAC960_V2_ScatterGatherSegment
-{
-  DAC960_BusAddress64_T SegmentDataPointer;		/* Bytes 0-7 */
-  DAC960_ByteCount64_T SegmentByteCount;		/* Bytes 8-15 */
-}
-DAC960_V2_ScatterGatherSegment_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Data Transfer Memory Address structure.
-*/
-
-typedef union DAC960_V2_DataTransferMemoryAddress
-{
-  DAC960_V2_ScatterGatherSegment_T ScatterGatherSegments[2]; /* Bytes 0-31 */
-  struct {
-    unsigned short ScatterGatherList0Length;		/* Bytes 0-1 */
-    unsigned short ScatterGatherList1Length;		/* Bytes 2-3 */
-    unsigned short ScatterGatherList2Length;		/* Bytes 4-5 */
-    unsigned short :16;					/* Bytes 6-7 */
-    DAC960_BusAddress64_T ScatterGatherList0Address;	/* Bytes 8-15 */
-    DAC960_BusAddress64_T ScatterGatherList1Address;	/* Bytes 16-23 */
-    DAC960_BusAddress64_T ScatterGatherList2Address;	/* Bytes 24-31 */
-  } ExtendedScatterGather;
-}
-DAC960_V2_DataTransferMemoryAddress_T;
-
-
-/*
-  Define the 64 Byte DAC960 V2 Firmware Command Mailbox structure.
-*/
-
-typedef union DAC960_V2_CommandMailbox
-{
-  unsigned int Words[16];				/* Words 0-15 */
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    DAC960_ByteCount32_T DataTransferSize:24;		/* Bytes 4-6 */
-    unsigned char DataTransferPageNumber;		/* Byte 7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    unsigned int :24;					/* Bytes 16-18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char IOCTL_Opcode;				/* Byte 21 */
-    unsigned char Reserved[10];				/* Bytes 22-31 */
-    DAC960_V2_DataTransferMemoryAddress_T
-      DataTransferMemoryAddress;			/* Bytes 32-63 */
-  } Common;
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    DAC960_ByteCount32_T DataTransferSize;		/* Bytes 4-7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    DAC960_V2_PhysicalDevice_T PhysicalDevice;		/* Bytes 16-18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char CDBLength;				/* Byte 21 */
-    unsigned char SCSI_CDB[10];				/* Bytes 22-31 */
-    DAC960_V2_DataTransferMemoryAddress_T
-      DataTransferMemoryAddress;			/* Bytes 32-63 */
-  } SCSI_10;
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    DAC960_ByteCount32_T DataTransferSize;		/* Bytes 4-7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    DAC960_V2_PhysicalDevice_T PhysicalDevice;		/* Bytes 16-18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char CDBLength;				/* Byte 21 */
-    unsigned short :16;					/* Bytes 22-23 */
-    DAC960_BusAddress64_T SCSI_CDB_BusAddress;		/* Bytes 24-31 */
-    DAC960_V2_DataTransferMemoryAddress_T
-      DataTransferMemoryAddress;			/* Bytes 32-63 */
-  } SCSI_255;
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    DAC960_ByteCount32_T DataTransferSize:24;		/* Bytes 4-6 */
-    unsigned char DataTransferPageNumber;		/* Byte 7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    unsigned short :16;					/* Bytes 16-17 */
-    unsigned char ControllerNumber;			/* Byte 18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char IOCTL_Opcode;				/* Byte 21 */
-    unsigned char Reserved[10];				/* Bytes 22-31 */
-    DAC960_V2_DataTransferMemoryAddress_T
-      DataTransferMemoryAddress;			/* Bytes 32-63 */
-  } ControllerInfo;
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    DAC960_ByteCount32_T DataTransferSize:24;		/* Bytes 4-6 */
-    unsigned char DataTransferPageNumber;		/* Byte 7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    DAC960_V2_LogicalDevice_T LogicalDevice;		/* Bytes 16-18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char IOCTL_Opcode;				/* Byte 21 */
-    unsigned char Reserved[10];				/* Bytes 22-31 */
-    DAC960_V2_DataTransferMemoryAddress_T
-      DataTransferMemoryAddress;			/* Bytes 32-63 */
-  } LogicalDeviceInfo;
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    DAC960_ByteCount32_T DataTransferSize:24;		/* Bytes 4-6 */
-    unsigned char DataTransferPageNumber;		/* Byte 7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    DAC960_V2_PhysicalDevice_T PhysicalDevice;		/* Bytes 16-18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char IOCTL_Opcode;				/* Byte 21 */
-    unsigned char Reserved[10];				/* Bytes 22-31 */
-    DAC960_V2_DataTransferMemoryAddress_T
-      DataTransferMemoryAddress;			/* Bytes 32-63 */
-  } PhysicalDeviceInfo;
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    DAC960_ByteCount32_T DataTransferSize:24;		/* Bytes 4-6 */
-    unsigned char DataTransferPageNumber;		/* Byte 7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    unsigned short EventSequenceNumberHigh16;		/* Bytes 16-17 */
-    unsigned char ControllerNumber;			/* Byte 18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char IOCTL_Opcode;				/* Byte 21 */
-    unsigned short EventSequenceNumberLow16;		/* Bytes 22-23 */
-    unsigned char Reserved[8];				/* Bytes 24-31 */
-    DAC960_V2_DataTransferMemoryAddress_T
-      DataTransferMemoryAddress;			/* Bytes 32-63 */
-  } GetEvent;
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    DAC960_ByteCount32_T DataTransferSize:24;		/* Bytes 4-6 */
-    unsigned char DataTransferPageNumber;		/* Byte 7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    DAC960_V2_LogicalDevice_T LogicalDevice;		/* Bytes 16-18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char IOCTL_Opcode;				/* Byte 21 */
-    union {
-      DAC960_V2_LogicalDeviceState_T LogicalDeviceState;
-      DAC960_V2_PhysicalDeviceState_T PhysicalDeviceState;
-    } DeviceState;					/* Byte 22 */
-    unsigned char Reserved[9];				/* Bytes 23-31 */
-    DAC960_V2_DataTransferMemoryAddress_T
-      DataTransferMemoryAddress;			/* Bytes 32-63 */
-  } SetDeviceState;
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    DAC960_ByteCount32_T DataTransferSize:24;		/* Bytes 4-6 */
-    unsigned char DataTransferPageNumber;		/* Byte 7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    DAC960_V2_LogicalDevice_T LogicalDevice;		/* Bytes 16-18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char IOCTL_Opcode;				/* Byte 21 */
-    bool RestoreConsistency:1;				/* Byte 22 Bit 0 */
-    bool InitializedAreaOnly:1;				/* Byte 22 Bit 1 */
-    unsigned char :6;					/* Byte 22 Bits 2-7 */
-    unsigned char Reserved[9];				/* Bytes 23-31 */
-    DAC960_V2_DataTransferMemoryAddress_T
-      DataTransferMemoryAddress;			/* Bytes 32-63 */
-  } ConsistencyCheck;
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    unsigned char FirstCommandMailboxSizeKB;		/* Byte 4 */
-    unsigned char FirstStatusMailboxSizeKB;		/* Byte 5 */
-    unsigned char SecondCommandMailboxSizeKB;		/* Byte 6 */
-    unsigned char SecondStatusMailboxSizeKB;		/* Byte 7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    unsigned int :24;					/* Bytes 16-18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char IOCTL_Opcode;				/* Byte 21 */
-    unsigned char HealthStatusBufferSizeKB;		/* Byte 22 */
-    unsigned char :8;					/* Byte 23 */
-    DAC960_BusAddress64_T HealthStatusBufferBusAddress; /* Bytes 24-31 */
-    DAC960_BusAddress64_T FirstCommandMailboxBusAddress; /* Bytes 32-39 */
-    DAC960_BusAddress64_T FirstStatusMailboxBusAddress; /* Bytes 40-47 */
-    DAC960_BusAddress64_T SecondCommandMailboxBusAddress; /* Bytes 48-55 */
-    DAC960_BusAddress64_T SecondStatusMailboxBusAddress; /* Bytes 56-63 */
-  } SetMemoryMailbox;
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandOpcode_T CommandOpcode;		/* Byte 2 */
-    DAC960_V2_CommandControlBits_T CommandControlBits;	/* Byte 3 */
-    DAC960_ByteCount32_T DataTransferSize:24;		/* Bytes 4-6 */
-    unsigned char DataTransferPageNumber;		/* Byte 7 */
-    DAC960_BusAddress64_T RequestSenseBusAddress;	/* Bytes 8-15 */
-    DAC960_V2_PhysicalDevice_T PhysicalDevice;		/* Bytes 16-18 */
-    DAC960_V2_CommandTimeout_T CommandTimeout;		/* Byte 19 */
-    unsigned char RequestSenseSize;			/* Byte 20 */
-    unsigned char IOCTL_Opcode;				/* Byte 21 */
-    DAC960_V2_OperationDevice_T OperationDevice;	/* Byte 22 */
-    unsigned char Reserved[9];				/* Bytes 23-31 */
-    DAC960_V2_DataTransferMemoryAddress_T
-      DataTransferMemoryAddress;			/* Bytes 32-63 */
-  } DeviceOperation;
-}
-DAC960_V2_CommandMailbox_T;
-
-
-/*
-  Define the DAC960 Driver IOCTL requests.
-*/
-
-#define DAC960_IOCTL_GET_CONTROLLER_COUNT	0xDAC001
-#define DAC960_IOCTL_GET_CONTROLLER_INFO	0xDAC002
-#define DAC960_IOCTL_V1_EXECUTE_COMMAND		0xDAC003
-#define DAC960_IOCTL_V2_EXECUTE_COMMAND		0xDAC004
-#define DAC960_IOCTL_V2_GET_HEALTH_STATUS	0xDAC005
-
-
-/*
-  Define the DAC960_IOCTL_GET_CONTROLLER_INFO reply structure.
-*/
-
-typedef struct DAC960_ControllerInfo
-{
-  unsigned char ControllerNumber;
-  unsigned char FirmwareType;
-  unsigned char Channels;
-  unsigned char Targets;
-  unsigned char PCI_Bus;
-  unsigned char PCI_Device;
-  unsigned char PCI_Function;
-  unsigned char IRQ_Channel;
-  DAC960_PCI_Address_T PCI_Address;
-  unsigned char ModelName[20];
-  unsigned char FirmwareVersion[12];
-}
-DAC960_ControllerInfo_T;
-
-
-/*
-  Define the User Mode DAC960_IOCTL_V1_EXECUTE_COMMAND request structure.
-*/
-
-typedef struct DAC960_V1_UserCommand
-{
-  unsigned char ControllerNumber;
-  DAC960_V1_CommandMailbox_T CommandMailbox;
-  int DataTransferLength;
-  void __user *DataTransferBuffer;
-  DAC960_V1_DCDB_T __user *DCDB;
-}
-DAC960_V1_UserCommand_T;
-
-
-/*
-  Define the Kernel Mode DAC960_IOCTL_V1_EXECUTE_COMMAND request structure.
-*/
-
-typedef struct DAC960_V1_KernelCommand
-{
-  unsigned char ControllerNumber;
-  DAC960_V1_CommandMailbox_T CommandMailbox;
-  int DataTransferLength;
-  void *DataTransferBuffer;
-  DAC960_V1_DCDB_T *DCDB;
-  DAC960_V1_CommandStatus_T CommandStatus;
-  void (*CompletionFunction)(struct DAC960_V1_KernelCommand *);
-  void *CompletionData;
-}
-DAC960_V1_KernelCommand_T;
-
-
-/*
-  Define the User Mode DAC960_IOCTL_V2_EXECUTE_COMMAND request structure.
-*/
-
-typedef struct DAC960_V2_UserCommand
-{
-  unsigned char ControllerNumber;
-  DAC960_V2_CommandMailbox_T CommandMailbox;
-  int DataTransferLength;
-  int RequestSenseLength;
-  void __user *DataTransferBuffer;
-  void __user *RequestSenseBuffer;
-}
-DAC960_V2_UserCommand_T;
-
-
-/*
-  Define the Kernel Mode DAC960_IOCTL_V2_EXECUTE_COMMAND request structure.
-*/
-
-typedef struct DAC960_V2_KernelCommand
-{
-  unsigned char ControllerNumber;
-  DAC960_V2_CommandMailbox_T CommandMailbox;
-  int DataTransferLength;
-  int RequestSenseLength;
-  void *DataTransferBuffer;
-  void *RequestSenseBuffer;
-  DAC960_V2_CommandStatus_T CommandStatus;
-  void (*CompletionFunction)(struct DAC960_V2_KernelCommand *);
-  void *CompletionData;
-}
-DAC960_V2_KernelCommand_T;
-
-
-/*
-  Define the User Mode DAC960_IOCTL_V2_GET_HEALTH_STATUS request structure.
-*/
-
-typedef struct DAC960_V2_GetHealthStatus
-{
-  unsigned char ControllerNumber;
-  DAC960_V2_HealthStatusBuffer_T __user *HealthStatusBuffer;
-}
-DAC960_V2_GetHealthStatus_T;
-
-
-/*
-  Import the Kernel Mode IOCTL interface.
-*/
-
-extern int DAC960_KernelIOCTL(unsigned int Request, void *Argument);
-
-
-/*
-  DAC960_DriverVersion protects the private portion of this file.
-*/
-
-#ifdef DAC960_DriverVersion
-
-
-/*
-  Define the maximum Driver Queue Depth and Controller Queue Depth supported
-  by DAC960 V1 and V2 Firmware Controllers.
-*/
-
-#define DAC960_MaxDriverQueueDepth		511
-#define DAC960_MaxControllerQueueDepth		512
-
-
-/*
-  Define the maximum number of Scatter/Gather Segments supported for any
-  DAC960 V1 and V2 Firmware controller.
-*/
-
-#define DAC960_V1_ScatterGatherLimit		33
-#define DAC960_V2_ScatterGatherLimit		128
-
-
-/*
-  Define the number of Command Mailboxes and Status Mailboxes used by the
-  DAC960 V1 and V2 Firmware Memory Mailbox Interface.
-*/
-
-#define DAC960_V1_CommandMailboxCount		256
-#define DAC960_V1_StatusMailboxCount		1024
-#define DAC960_V2_CommandMailboxCount		512
-#define DAC960_V2_StatusMailboxCount		512
-
-
-/*
-  Define the DAC960 Controller Monitoring Timer Interval.
-*/
-
-#define DAC960_MonitoringTimerInterval		(10 * HZ)
-
-
-/*
-  Define the DAC960 Controller Secondary Monitoring Interval.
-*/
-
-#define DAC960_SecondaryMonitoringInterval	(60 * HZ)
-
-
-/*
-  Define the DAC960 Controller Health Status Monitoring Interval.
-*/
-
-#define DAC960_HealthStatusMonitoringInterval	(1 * HZ)
-
-
-/*
-  Define the DAC960 Controller Progress Reporting Interval.
-*/
-
-#define DAC960_ProgressReportingInterval	(60 * HZ)
-
-
-/*
-  Define the maximum number of Partitions allowed for each Logical Drive.
-*/
-
-#define DAC960_MaxPartitions			8
-#define DAC960_MaxPartitionsBits		3
-
-/*
-  Define the DAC960 Controller fixed Block Size and Block Size Bits.
-*/
-
-#define DAC960_BlockSize			512
-#define DAC960_BlockSizeBits			9
-
-
-/*
-  Define the number of Command structures that should be allocated as a
-  group to optimize kernel memory allocation.
-*/
-
-#define DAC960_V1_CommandAllocationGroupSize	11
-#define DAC960_V2_CommandAllocationGroupSize	29
-
-
-/*
-  Define the Controller Line Buffer, Progress Buffer, User Message, and
-  Initial Status Buffer sizes.
-*/
-
-#define DAC960_LineBufferSize			100
-#define DAC960_ProgressBufferSize		200
-#define DAC960_UserMessageSize			200
-#define DAC960_InitialStatusBufferSize		(8192-32)
-
-
-/*
-  Define the DAC960 Controller Firmware Types.
-*/
-
-typedef enum
-{
-  DAC960_V1_Controller =			1,
-  DAC960_V2_Controller =			2
-}
-DAC960_FirmwareType_T;
-
-
-/*
-  Define the DAC960 Controller Hardware Types.
-*/
-
-typedef enum
-{
-  DAC960_BA_Controller =			1,	/* eXtremeRAID 2000 */
-  DAC960_LP_Controller =			2,	/* AcceleRAID 352 */
-  DAC960_LA_Controller =			3,	/* DAC1164P */
-  DAC960_PG_Controller =			4,	/* DAC960PTL/PJ/PG */
-  DAC960_PD_Controller =			5,	/* DAC960PU/PD/PL/P */
-  DAC960_P_Controller =				6,	/* DAC960PU/PD/PL/P */
-  DAC960_GEM_Controller =			7,	/* AcceleRAID 4/5/600 */
-}
-DAC960_HardwareType_T;
-
-
-/*
-  Define the Driver Message Levels.
-*/
-
-typedef enum DAC960_MessageLevel
-{
-  DAC960_AnnounceLevel =			0,
-  DAC960_InfoLevel =				1,
-  DAC960_NoticeLevel =				2,
-  DAC960_WarningLevel =				3,
-  DAC960_ErrorLevel =				4,
-  DAC960_ProgressLevel =			5,
-  DAC960_CriticalLevel =			6,
-  DAC960_UserCriticalLevel =			7
-}
-DAC960_MessageLevel_T;
-
-static char
-  *DAC960_MessageLevelMap[] =
-    { KERN_NOTICE, KERN_NOTICE, KERN_NOTICE, KERN_WARNING,
-      KERN_ERR, KERN_CRIT, KERN_CRIT, KERN_CRIT };
-
-
-/*
-  Define Driver Message macros.
-*/
-
-#define DAC960_Announce(Format, Arguments...) \
-  DAC960_Message(DAC960_AnnounceLevel, Format, ##Arguments)
-
-#define DAC960_Info(Format, Arguments...) \
-  DAC960_Message(DAC960_InfoLevel, Format, ##Arguments)
-
-#define DAC960_Notice(Format, Arguments...) \
-  DAC960_Message(DAC960_NoticeLevel, Format, ##Arguments)
-
-#define DAC960_Warning(Format, Arguments...) \
-  DAC960_Message(DAC960_WarningLevel, Format, ##Arguments)
-
-#define DAC960_Error(Format, Arguments...) \
-  DAC960_Message(DAC960_ErrorLevel, Format, ##Arguments)
-
-#define DAC960_Progress(Format, Arguments...) \
-  DAC960_Message(DAC960_ProgressLevel, Format, ##Arguments)
-
-#define DAC960_Critical(Format, Arguments...) \
-  DAC960_Message(DAC960_CriticalLevel, Format, ##Arguments)
-
-#define DAC960_UserCritical(Format, Arguments...) \
-  DAC960_Message(DAC960_UserCriticalLevel, Format, ##Arguments)
-
-
-struct DAC960_privdata {
-	DAC960_HardwareType_T	HardwareType;
-	DAC960_FirmwareType_T	FirmwareType;
-	irq_handler_t		InterruptHandler;
-	unsigned int		MemoryWindowSize;
-};
-
-
-/*
-  Define the DAC960 V1 Firmware Controller Status Mailbox structure.
-*/
-
-typedef union DAC960_V1_StatusMailbox
-{
-  unsigned int Word;					/* Word 0 */
-  struct {
-    DAC960_V1_CommandIdentifier_T CommandIdentifier;	/* Byte 0 */
-    unsigned char :7;					/* Byte 1 Bits 0-6 */
-    bool Valid:1;					/* Byte 1 Bit 7 */
-    DAC960_V1_CommandStatus_T CommandStatus;		/* Bytes 2-3 */
-  } Fields;
-}
-DAC960_V1_StatusMailbox_T;
-
-
-/*
-  Define the DAC960 V2 Firmware Controller Status Mailbox structure.
-*/
-
-typedef union DAC960_V2_StatusMailbox
-{
-  unsigned int Words[2];				/* Words 0-1 */
-  struct {
-    DAC960_V2_CommandIdentifier_T CommandIdentifier;	/* Bytes 0-1 */
-    DAC960_V2_CommandStatus_T CommandStatus;		/* Byte 2 */
-    unsigned char RequestSenseLength;			/* Byte 3 */
-    int DataTransferResidue;				/* Bytes 4-7 */
-  } Fields;
-}
-DAC960_V2_StatusMailbox_T;
-
-
-/*
-  Define the DAC960 Driver Command Types.
-*/
-
-typedef enum
-{
-  DAC960_ReadCommand =				1,
-  DAC960_WriteCommand =				2,
-  DAC960_ReadRetryCommand =			3,
-  DAC960_WriteRetryCommand =			4,
-  DAC960_MonitoringCommand =			5,
-  DAC960_ImmediateCommand =			6,
-  DAC960_QueuedCommand =			7
-}
-DAC960_CommandType_T;
-
-
-/*
-  Define the DAC960 Driver Command structure.
-*/
-
-typedef struct DAC960_Command
-{
-  int CommandIdentifier;
-  DAC960_CommandType_T CommandType;
-  struct DAC960_Controller *Controller;
-  struct DAC960_Command *Next;
-  struct completion *Completion;
-  unsigned int LogicalDriveNumber;
-  unsigned int BlockNumber;
-  unsigned int BlockCount;
-  unsigned int SegmentCount;
-  int	DmaDirection;
-  struct scatterlist *cmd_sglist;
-  struct request *Request;
-  union {
-    struct {
-      DAC960_V1_CommandMailbox_T CommandMailbox;
-      DAC960_V1_KernelCommand_T *KernelCommand;
-      DAC960_V1_CommandStatus_T CommandStatus;
-      DAC960_V1_ScatterGatherSegment_T *ScatterGatherList;
-      dma_addr_t ScatterGatherListDMA;
-      struct scatterlist ScatterList[DAC960_V1_ScatterGatherLimit];
-      unsigned int EndMarker[0];
-    } V1;
-    struct {
-      DAC960_V2_CommandMailbox_T CommandMailbox;
-      DAC960_V2_KernelCommand_T *KernelCommand;
-      DAC960_V2_CommandStatus_T CommandStatus;
-      unsigned char RequestSenseLength;
-      int DataTransferResidue;
-      DAC960_V2_ScatterGatherSegment_T *ScatterGatherList;
-      dma_addr_t ScatterGatherListDMA;
-      DAC960_SCSI_RequestSense_T *RequestSense;
-      dma_addr_t RequestSenseDMA;
-      struct scatterlist ScatterList[DAC960_V2_ScatterGatherLimit];
-      unsigned int EndMarker[0];
-    } V2;
-  } FW;
-}
-DAC960_Command_T;
-
-
-/*
-  Define the DAC960 Driver Controller structure.
-*/
-
-typedef struct DAC960_Controller
-{
-  void __iomem *BaseAddress;
-  void __iomem *MemoryMappedAddress;
-  DAC960_FirmwareType_T FirmwareType;
-  DAC960_HardwareType_T HardwareType;
-  DAC960_IO_Address_T IO_Address;
-  DAC960_PCI_Address_T PCI_Address;
-  struct pci_dev *PCIDevice;
-  unsigned char ControllerNumber;
-  unsigned char ControllerName[4];
-  unsigned char ModelName[20];
-  unsigned char FullModelName[28];
-  unsigned char FirmwareVersion[12];
-  unsigned char Bus;
-  unsigned char Device;
-  unsigned char Function;
-  unsigned char IRQ_Channel;
-  unsigned char Channels;
-  unsigned char Targets;
-  unsigned char MemorySize;
-  unsigned char LogicalDriveCount;
-  unsigned short CommandAllocationGroupSize;
-  unsigned short ControllerQueueDepth;
-  unsigned short DriverQueueDepth;
-  unsigned short MaxBlocksPerCommand;
-  unsigned short ControllerScatterGatherLimit;
-  unsigned short DriverScatterGatherLimit;
-  unsigned int CombinedStatusBufferLength;
-  unsigned int InitialStatusLength;
-  unsigned int CurrentStatusLength;
-  unsigned int ProgressBufferLength;
-  unsigned int UserStatusLength;
-  struct dma_loaf DmaPages;
-  unsigned long MonitoringTimerCount;
-  unsigned long PrimaryMonitoringTime;
-  unsigned long SecondaryMonitoringTime;
-  unsigned long ShutdownMonitoringTimer;
-  unsigned long LastProgressReportTime;
-  unsigned long LastCurrentStatusTime;
-  bool ControllerInitialized;
-  bool MonitoringCommandDeferred;
-  bool EphemeralProgressMessage;
-  bool DriveSpinUpMessageDisplayed;
-  bool MonitoringAlertMode;
-  bool SuppressEnclosureMessages;
-  struct timer_list MonitoringTimer;
-  struct gendisk *disks[DAC960_MaxLogicalDrives];
-  struct dma_pool *ScatterGatherPool;
-  DAC960_Command_T *FreeCommands;
-  unsigned char *CombinedStatusBuffer;
-  unsigned char *CurrentStatusBuffer;
-  struct request_queue *RequestQueue[DAC960_MaxLogicalDrives];
-  int req_q_index;
-  spinlock_t queue_lock;
-  wait_queue_head_t CommandWaitQueue;
-  wait_queue_head_t HealthStatusWaitQueue;
-  DAC960_Command_T InitialCommand;
-  DAC960_Command_T *Commands[DAC960_MaxDriverQueueDepth];
-  struct proc_dir_entry *ControllerProcEntry;
-  bool LogicalDriveInitiallyAccessible[DAC960_MaxLogicalDrives];
-  void (*QueueCommand)(DAC960_Command_T *Command);
-  bool (*ReadControllerConfiguration)(struct DAC960_Controller *);
-  bool (*ReadDeviceConfiguration)(struct DAC960_Controller *);
-  bool (*ReportDeviceConfiguration)(struct DAC960_Controller *);
-  void (*QueueReadWriteCommand)(DAC960_Command_T *Command);
-  union {
-    struct {
-      unsigned char GeometryTranslationHeads;
-      unsigned char GeometryTranslationSectors;
-      unsigned char PendingRebuildFlag;
-      unsigned short StripeSize;
-      unsigned short SegmentSize;
-      unsigned short NewEventLogSequenceNumber;
-      unsigned short OldEventLogSequenceNumber;
-      unsigned short DeviceStateChannel;
-      unsigned short DeviceStateTargetID;
-      bool DualModeMemoryMailboxInterface;
-      bool BackgroundInitializationStatusSupported;
-      bool SAFTE_EnclosureManagementEnabled;
-      bool NeedLogicalDriveInformation;
-      bool NeedErrorTableInformation;
-      bool NeedDeviceStateInformation;
-      bool NeedDeviceInquiryInformation;
-      bool NeedDeviceSerialNumberInformation;
-      bool NeedRebuildProgress;
-      bool NeedConsistencyCheckProgress;
-      bool NeedBackgroundInitializationStatus;
-      bool StartDeviceStateScan;
-      bool RebuildProgressFirst;
-      bool RebuildFlagPending;
-      bool RebuildStatusPending;
-
-      dma_addr_t	FirstCommandMailboxDMA;
-      DAC960_V1_CommandMailbox_T *FirstCommandMailbox;
-      DAC960_V1_CommandMailbox_T *LastCommandMailbox;
-      DAC960_V1_CommandMailbox_T *NextCommandMailbox;
-      DAC960_V1_CommandMailbox_T *PreviousCommandMailbox1;
-      DAC960_V1_CommandMailbox_T *PreviousCommandMailbox2;
-
-      dma_addr_t	FirstStatusMailboxDMA;
-      DAC960_V1_StatusMailbox_T *FirstStatusMailbox;
-      DAC960_V1_StatusMailbox_T *LastStatusMailbox;
-      DAC960_V1_StatusMailbox_T *NextStatusMailbox;
-
-      DAC960_V1_DCDB_T *MonitoringDCDB;
-      dma_addr_t MonitoringDCDB_DMA;
-
-      DAC960_V1_Enquiry_T Enquiry;
-      DAC960_V1_Enquiry_T *NewEnquiry;
-      dma_addr_t NewEnquiryDMA;
-
-      DAC960_V1_ErrorTable_T ErrorTable;
-      DAC960_V1_ErrorTable_T *NewErrorTable;
-      dma_addr_t NewErrorTableDMA;
-
-      DAC960_V1_EventLogEntry_T *EventLogEntry;
-      dma_addr_t EventLogEntryDMA;
-
-      DAC960_V1_RebuildProgress_T *RebuildProgress;
-      dma_addr_t RebuildProgressDMA;
-      DAC960_V1_CommandStatus_T LastRebuildStatus;
-      DAC960_V1_CommandStatus_T PendingRebuildStatus;
-
-      DAC960_V1_LogicalDriveInformationArray_T LogicalDriveInformation;
-      DAC960_V1_LogicalDriveInformationArray_T *NewLogicalDriveInformation;
-      dma_addr_t NewLogicalDriveInformationDMA;
-
-      DAC960_V1_BackgroundInitializationStatus_T
-        	*BackgroundInitializationStatus;
-      dma_addr_t BackgroundInitializationStatusDMA;
-      DAC960_V1_BackgroundInitializationStatus_T
-        	LastBackgroundInitializationStatus;
-
-      DAC960_V1_DeviceState_T
-	DeviceState[DAC960_V1_MaxChannels][DAC960_V1_MaxTargets];
-      DAC960_V1_DeviceState_T *NewDeviceState;
-      dma_addr_t	NewDeviceStateDMA;
-
-      DAC960_SCSI_Inquiry_T
-	InquiryStandardData[DAC960_V1_MaxChannels][DAC960_V1_MaxTargets];
-      DAC960_SCSI_Inquiry_T *NewInquiryStandardData;
-      dma_addr_t NewInquiryStandardDataDMA;
-
-      DAC960_SCSI_Inquiry_UnitSerialNumber_T
-	InquiryUnitSerialNumber[DAC960_V1_MaxChannels][DAC960_V1_MaxTargets];
-      DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber;
-      dma_addr_t NewInquiryUnitSerialNumberDMA;
-
-      int DeviceResetCount[DAC960_V1_MaxChannels][DAC960_V1_MaxTargets];
-      bool DirectCommandActive[DAC960_V1_MaxChannels][DAC960_V1_MaxTargets];
-    } V1;
-    struct {
-      unsigned int StatusChangeCounter;
-      unsigned int NextEventSequenceNumber;
-      unsigned int PhysicalDeviceIndex;
-      bool NeedLogicalDeviceInformation;
-      bool NeedPhysicalDeviceInformation;
-      bool NeedDeviceSerialNumberInformation;
-      bool StartLogicalDeviceInformationScan;
-      bool StartPhysicalDeviceInformationScan;
-      struct dma_pool *RequestSensePool;
-
-      dma_addr_t	FirstCommandMailboxDMA;
-      DAC960_V2_CommandMailbox_T *FirstCommandMailbox;
-      DAC960_V2_CommandMailbox_T *LastCommandMailbox;
-      DAC960_V2_CommandMailbox_T *NextCommandMailbox;
-      DAC960_V2_CommandMailbox_T *PreviousCommandMailbox1;
-      DAC960_V2_CommandMailbox_T *PreviousCommandMailbox2;
-
-      dma_addr_t	FirstStatusMailboxDMA;
-      DAC960_V2_StatusMailbox_T *FirstStatusMailbox;
-      DAC960_V2_StatusMailbox_T *LastStatusMailbox;
-      DAC960_V2_StatusMailbox_T *NextStatusMailbox;
-
-      dma_addr_t	HealthStatusBufferDMA;
-      DAC960_V2_HealthStatusBuffer_T *HealthStatusBuffer;
-
-      DAC960_V2_ControllerInfo_T ControllerInformation;
-      DAC960_V2_ControllerInfo_T *NewControllerInformation;
-      dma_addr_t	NewControllerInformationDMA;
-
-      DAC960_V2_LogicalDeviceInfo_T
-	*LogicalDeviceInformation[DAC960_MaxLogicalDrives];
-      DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInformation;
-      dma_addr_t	 NewLogicalDeviceInformationDMA;
-
-      DAC960_V2_PhysicalDeviceInfo_T
-	*PhysicalDeviceInformation[DAC960_V2_MaxPhysicalDevices];
-      DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInformation;
-      dma_addr_t	NewPhysicalDeviceInformationDMA;
-
-      DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber;
-      dma_addr_t	NewInquiryUnitSerialNumberDMA;
-      DAC960_SCSI_Inquiry_UnitSerialNumber_T
-	*InquiryUnitSerialNumber[DAC960_V2_MaxPhysicalDevices];
-
-      DAC960_V2_Event_T *Event;
-      dma_addr_t EventDMA;
-
-      DAC960_V2_PhysicalToLogicalDevice_T *PhysicalToLogicalDevice;
-      dma_addr_t PhysicalToLogicalDeviceDMA;
-
-      DAC960_V2_PhysicalDevice_T
-	LogicalDriveToVirtualDevice[DAC960_MaxLogicalDrives];
-      bool LogicalDriveFoundDuringScan[DAC960_MaxLogicalDrives];
-    } V2;
-  } FW;
-  unsigned char ProgressBuffer[DAC960_ProgressBufferSize];
-  unsigned char UserStatusBuffer[DAC960_UserMessageSize];
-}
-DAC960_Controller_T;
-
-
-/*
-  Simplify access to Firmware Version Dependent Data Structure Components
-  and Functions.
-*/
-
-#define V1				FW.V1
-#define V2				FW.V2
-#define DAC960_QueueCommand(Command) \
-  (Controller->QueueCommand)(Command)
-#define DAC960_ReadControllerConfiguration(Controller) \
-  (Controller->ReadControllerConfiguration)(Controller)
-#define DAC960_ReadDeviceConfiguration(Controller) \
-  (Controller->ReadDeviceConfiguration)(Controller)
-#define DAC960_ReportDeviceConfiguration(Controller) \
-  (Controller->ReportDeviceConfiguration)(Controller)
-#define DAC960_QueueReadWriteCommand(Command) \
-  (Controller->QueueReadWriteCommand)(Command)
-
-/*
- * dma_addr_writeql is provided to write dma_addr_t types
- * to a 64-bit pci address space register.  The controller
- * will accept having the register written as two 32-bit
- * values.
- *
- * In HIGHMEM kernels, dma_addr_t is a 64-bit value.
- * without HIGHMEM,  dma_addr_t is a 32-bit value.
- *
- * The compiler should always fix up the assignment
- * to u.wq appropriately, depending upon the size of
- * dma_addr_t.
- */
-static inline
-void dma_addr_writeql(dma_addr_t addr, void __iomem *write_address)
-{
-	union {
-		u64 wq;
-		uint wl[2];
-	} u;
-
-	u.wq = addr;
-
-	writel(u.wl[0], write_address);
-	writel(u.wl[1], write_address + 4);
-}
-
-/*
-  Define the DAC960 GEM Series Controller Interface Register Offsets.
- */
-
-#define DAC960_GEM_RegisterWindowSize	0x600
-
-typedef enum
-{
-  DAC960_GEM_InboundDoorBellRegisterReadSetOffset   =   0x214,
-  DAC960_GEM_InboundDoorBellRegisterClearOffset     =   0x218,
-  DAC960_GEM_OutboundDoorBellRegisterReadSetOffset  =   0x224,
-  DAC960_GEM_OutboundDoorBellRegisterClearOffset    =   0x228,
-  DAC960_GEM_InterruptStatusRegisterOffset          =   0x208,
-  DAC960_GEM_InterruptMaskRegisterReadSetOffset     =   0x22C,
-  DAC960_GEM_InterruptMaskRegisterClearOffset       =   0x230,
-  DAC960_GEM_CommandMailboxBusAddressOffset         =   0x510,
-  DAC960_GEM_CommandStatusOffset                    =   0x518,
-  DAC960_GEM_ErrorStatusRegisterReadSetOffset       =   0x224,
-  DAC960_GEM_ErrorStatusRegisterClearOffset         =   0x228,
-}
-DAC960_GEM_RegisterOffsets_T;
-
-/*
-  Define the structure of the DAC960 GEM Series Inbound Door Bell
- */
-
-typedef union DAC960_GEM_InboundDoorBellRegister
-{
-  unsigned int All;
-  struct {
-    unsigned int :24;
-    bool HardwareMailboxNewCommand:1;
-    bool AcknowledgeHardwareMailboxStatus:1;
-    bool GenerateInterrupt:1;
-    bool ControllerReset:1;
-    bool MemoryMailboxNewCommand:1;
-    unsigned int :3;
-  } Write;
-  struct {
-    unsigned int :24;
-    bool HardwareMailboxFull:1;
-    bool InitializationInProgress:1;
-    unsigned int :6;
-  } Read;
-}
-DAC960_GEM_InboundDoorBellRegister_T;
-
-/*
-  Define the structure of the DAC960 GEM Series Outbound Door Bell Register.
- */
-typedef union DAC960_GEM_OutboundDoorBellRegister
-{
-  unsigned int All;
-  struct {
-    unsigned int :24;
-    bool AcknowledgeHardwareMailboxInterrupt:1;
-    bool AcknowledgeMemoryMailboxInterrupt:1;
-    unsigned int :6;
-  } Write;
-  struct {
-    unsigned int :24;
-    bool HardwareMailboxStatusAvailable:1;
-    bool MemoryMailboxStatusAvailable:1;
-    unsigned int :6;
-  } Read;
-}
-DAC960_GEM_OutboundDoorBellRegister_T;
-
-/*
-  Define the structure of the DAC960 GEM Series Interrupt Mask Register.
- */
-typedef union DAC960_GEM_InterruptMaskRegister
-{
-  unsigned int All;
-  struct {
-    unsigned int :16;
-    unsigned int :8;
-    unsigned int HardwareMailboxInterrupt:1;
-    unsigned int MemoryMailboxInterrupt:1;
-    unsigned int :6;
-  } Bits;
-}
-DAC960_GEM_InterruptMaskRegister_T;
-
-/*
-  Define the structure of the DAC960 GEM Series Error Status Register.
- */
-
-typedef union DAC960_GEM_ErrorStatusRegister
-{
-  unsigned int All;
-  struct {
-    unsigned int :24;
-    unsigned int :5;
-    bool ErrorStatusPending:1;
-    unsigned int :2;
-  } Bits;
-}
-DAC960_GEM_ErrorStatusRegister_T;
-
-/*
-  Define inline functions to provide an abstraction for reading and writing the
-  DAC960 GEM Series Controller Interface Registers.
-*/
-
-static inline
-void DAC960_GEM_HardwareMailboxNewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.HardwareMailboxNewCommand = true;
-  writel(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_GEM_InboundDoorBellRegisterReadSetOffset);
-}
-
-static inline
-void DAC960_GEM_AcknowledgeHardwareMailboxStatus(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.AcknowledgeHardwareMailboxStatus = true;
-  writel(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_GEM_InboundDoorBellRegisterClearOffset);
-}
-
-static inline
-void DAC960_GEM_GenerateInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.GenerateInterrupt = true;
-  writel(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_GEM_InboundDoorBellRegisterReadSetOffset);
-}
-
-static inline
-void DAC960_GEM_ControllerReset(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.ControllerReset = true;
-  writel(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_GEM_InboundDoorBellRegisterReadSetOffset);
-}
-
-static inline
-void DAC960_GEM_MemoryMailboxNewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.MemoryMailboxNewCommand = true;
-  writel(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_GEM_InboundDoorBellRegisterReadSetOffset);
-}
-
-static inline
-bool DAC960_GEM_HardwareMailboxFullP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readl(ControllerBaseAddress +
-          DAC960_GEM_InboundDoorBellRegisterReadSetOffset);
-  return InboundDoorBellRegister.Read.HardwareMailboxFull;
-}
-
-static inline
-bool DAC960_GEM_InitializationInProgressP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readl(ControllerBaseAddress +
-          DAC960_GEM_InboundDoorBellRegisterReadSetOffset);
-  return InboundDoorBellRegister.Read.InitializationInProgress;
-}
-
-static inline
-void DAC960_GEM_AcknowledgeHardwareMailboxInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeHardwareMailboxInterrupt = true;
-  writel(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_GEM_OutboundDoorBellRegisterClearOffset);
-}
-
-static inline
-void DAC960_GEM_AcknowledgeMemoryMailboxInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeMemoryMailboxInterrupt = true;
-  writel(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_GEM_OutboundDoorBellRegisterClearOffset);
-}
-
-static inline
-void DAC960_GEM_AcknowledgeInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeHardwareMailboxInterrupt = true;
-  OutboundDoorBellRegister.Write.AcknowledgeMemoryMailboxInterrupt = true;
-  writel(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_GEM_OutboundDoorBellRegisterClearOffset);
-}
-
-static inline
-bool DAC960_GEM_HardwareMailboxStatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readl(ControllerBaseAddress +
-          DAC960_GEM_OutboundDoorBellRegisterReadSetOffset);
-  return OutboundDoorBellRegister.Read.HardwareMailboxStatusAvailable;
-}
-
-static inline
-bool DAC960_GEM_MemoryMailboxStatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readl(ControllerBaseAddress +
-          DAC960_GEM_OutboundDoorBellRegisterReadSetOffset);
-  return OutboundDoorBellRegister.Read.MemoryMailboxStatusAvailable;
-}
-
-static inline
-void DAC960_GEM_EnableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All = 0;
-  InterruptMaskRegister.Bits.HardwareMailboxInterrupt = true;
-  InterruptMaskRegister.Bits.MemoryMailboxInterrupt = true;
-  writel(InterruptMaskRegister.All,
-	 ControllerBaseAddress + DAC960_GEM_InterruptMaskRegisterClearOffset);
-}
-
-static inline
-void DAC960_GEM_DisableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All = 0;
-  InterruptMaskRegister.Bits.HardwareMailboxInterrupt = true;
-  InterruptMaskRegister.Bits.MemoryMailboxInterrupt = true;
-  writel(InterruptMaskRegister.All,
-	 ControllerBaseAddress + DAC960_GEM_InterruptMaskRegisterReadSetOffset);
-}
-
-static inline
-bool DAC960_GEM_InterruptsEnabledP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_GEM_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All =
-    readl(ControllerBaseAddress +
-          DAC960_GEM_InterruptMaskRegisterReadSetOffset);
-  return !(InterruptMaskRegister.Bits.HardwareMailboxInterrupt ||
-           InterruptMaskRegister.Bits.MemoryMailboxInterrupt);
-}
-
-static inline
-void DAC960_GEM_WriteCommandMailbox(DAC960_V2_CommandMailbox_T
-				     *MemoryCommandMailbox,
-				   DAC960_V2_CommandMailbox_T
-				     *CommandMailbox)
-{
-  memcpy(&MemoryCommandMailbox->Words[1], &CommandMailbox->Words[1],
-	 sizeof(DAC960_V2_CommandMailbox_T) - sizeof(unsigned int));
-  wmb();
-  MemoryCommandMailbox->Words[0] = CommandMailbox->Words[0];
-  mb();
-}
-
-static inline
-void DAC960_GEM_WriteHardwareMailbox(void __iomem *ControllerBaseAddress,
-				    dma_addr_t CommandMailboxDMA)
-{
-	dma_addr_writeql(CommandMailboxDMA,
-		ControllerBaseAddress +
-		DAC960_GEM_CommandMailboxBusAddressOffset);
-}
-
-static inline DAC960_V2_CommandIdentifier_T
-DAC960_GEM_ReadCommandIdentifier(void __iomem *ControllerBaseAddress)
-{
-  return readw(ControllerBaseAddress + DAC960_GEM_CommandStatusOffset);
-}
-
-static inline DAC960_V2_CommandStatus_T
-DAC960_GEM_ReadCommandStatus(void __iomem *ControllerBaseAddress)
-{
-  return readw(ControllerBaseAddress + DAC960_GEM_CommandStatusOffset + 2);
-}
-
-static inline bool
-DAC960_GEM_ReadErrorStatus(void __iomem *ControllerBaseAddress,
-			  unsigned char *ErrorStatus,
-			  unsigned char *Parameter0,
-			  unsigned char *Parameter1)
-{
-  DAC960_GEM_ErrorStatusRegister_T ErrorStatusRegister;
-  ErrorStatusRegister.All =
-    readl(ControllerBaseAddress + DAC960_GEM_ErrorStatusRegisterReadSetOffset);
-  if (!ErrorStatusRegister.Bits.ErrorStatusPending) return false;
-  ErrorStatusRegister.Bits.ErrorStatusPending = false;
-  *ErrorStatus = ErrorStatusRegister.All;
-  *Parameter0 =
-    readb(ControllerBaseAddress + DAC960_GEM_CommandMailboxBusAddressOffset + 0);
-  *Parameter1 =
-    readb(ControllerBaseAddress + DAC960_GEM_CommandMailboxBusAddressOffset + 1);
-  writel(0x03000000, ControllerBaseAddress +
-         DAC960_GEM_ErrorStatusRegisterClearOffset);
-  return true;
-}
-
-/*
-  Define the DAC960 BA Series Controller Interface Register Offsets.
-*/
-
-#define DAC960_BA_RegisterWindowSize		0x80
-
-typedef enum
-{
-  DAC960_BA_InboundDoorBellRegisterOffset =	0x60,
-  DAC960_BA_OutboundDoorBellRegisterOffset =	0x61,
-  DAC960_BA_InterruptStatusRegisterOffset =	0x30,
-  DAC960_BA_InterruptMaskRegisterOffset =	0x34,
-  DAC960_BA_CommandMailboxBusAddressOffset =	0x50,
-  DAC960_BA_CommandStatusOffset =		0x58,
-  DAC960_BA_ErrorStatusRegisterOffset =		0x63
-}
-DAC960_BA_RegisterOffsets_T;
-
-
-/*
-  Define the structure of the DAC960 BA Series Inbound Door Bell Register.
-*/
-
-typedef union DAC960_BA_InboundDoorBellRegister
-{
-  unsigned char All;
-  struct {
-    bool HardwareMailboxNewCommand:1;			/* Bit 0 */
-    bool AcknowledgeHardwareMailboxStatus:1;		/* Bit 1 */
-    bool GenerateInterrupt:1;				/* Bit 2 */
-    bool ControllerReset:1;				/* Bit 3 */
-    bool MemoryMailboxNewCommand:1;			/* Bit 4 */
-    unsigned char :3;					/* Bits 5-7 */
-  } Write;
-  struct {
-    bool HardwareMailboxEmpty:1;			/* Bit 0 */
-    bool InitializationNotInProgress:1;			/* Bit 1 */
-    unsigned char :6;					/* Bits 2-7 */
-  } Read;
-}
-DAC960_BA_InboundDoorBellRegister_T;
-
-
-/*
-  Define the structure of the DAC960 BA Series Outbound Door Bell Register.
-*/
-
-typedef union DAC960_BA_OutboundDoorBellRegister
-{
-  unsigned char All;
-  struct {
-    bool AcknowledgeHardwareMailboxInterrupt:1;		/* Bit 0 */
-    bool AcknowledgeMemoryMailboxInterrupt:1;		/* Bit 1 */
-    unsigned char :6;					/* Bits 2-7 */
-  } Write;
-  struct {
-    bool HardwareMailboxStatusAvailable:1;		/* Bit 0 */
-    bool MemoryMailboxStatusAvailable:1;		/* Bit 1 */
-    unsigned char :6;					/* Bits 2-7 */
-  } Read;
-}
-DAC960_BA_OutboundDoorBellRegister_T;
-
-
-/*
-  Define the structure of the DAC960 BA Series Interrupt Mask Register.
-*/
-
-typedef union DAC960_BA_InterruptMaskRegister
-{
-  unsigned char All;
-  struct {
-    unsigned int :2;					/* Bits 0-1 */
-    bool DisableInterrupts:1;				/* Bit 2 */
-    bool DisableInterruptsI2O:1;			/* Bit 3 */
-    unsigned int :4;					/* Bits 4-7 */
-  } Bits;
-}
-DAC960_BA_InterruptMaskRegister_T;
-
-
-/*
-  Define the structure of the DAC960 BA Series Error Status Register.
-*/
-
-typedef union DAC960_BA_ErrorStatusRegister
-{
-  unsigned char All;
-  struct {
-    unsigned int :2;					/* Bits 0-1 */
-    bool ErrorStatusPending:1;				/* Bit 2 */
-    unsigned int :5;					/* Bits 3-7 */
-  } Bits;
-}
-DAC960_BA_ErrorStatusRegister_T;
-
-
-/*
-  Define inline functions to provide an abstraction for reading and writing the
-  DAC960 BA Series Controller Interface Registers.
-*/
-
-static inline
-void DAC960_BA_HardwareMailboxNewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.HardwareMailboxNewCommand = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_BA_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_BA_AcknowledgeHardwareMailboxStatus(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.AcknowledgeHardwareMailboxStatus = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_BA_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_BA_GenerateInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.GenerateInterrupt = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_BA_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_BA_ControllerReset(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.ControllerReset = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_BA_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_BA_MemoryMailboxNewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.MemoryMailboxNewCommand = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_BA_InboundDoorBellRegisterOffset);
-}
-
-static inline
-bool DAC960_BA_HardwareMailboxFullP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_BA_InboundDoorBellRegisterOffset);
-  return !InboundDoorBellRegister.Read.HardwareMailboxEmpty;
-}
-
-static inline
-bool DAC960_BA_InitializationInProgressP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_BA_InboundDoorBellRegisterOffset);
-  return !InboundDoorBellRegister.Read.InitializationNotInProgress;
-}
-
-static inline
-void DAC960_BA_AcknowledgeHardwareMailboxInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeHardwareMailboxInterrupt = true;
-  writeb(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_BA_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_BA_AcknowledgeMemoryMailboxInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeMemoryMailboxInterrupt = true;
-  writeb(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_BA_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_BA_AcknowledgeInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeHardwareMailboxInterrupt = true;
-  OutboundDoorBellRegister.Write.AcknowledgeMemoryMailboxInterrupt = true;
-  writeb(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_BA_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-bool DAC960_BA_HardwareMailboxStatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_BA_OutboundDoorBellRegisterOffset);
-  return OutboundDoorBellRegister.Read.HardwareMailboxStatusAvailable;
-}
-
-static inline
-bool DAC960_BA_MemoryMailboxStatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_BA_OutboundDoorBellRegisterOffset);
-  return OutboundDoorBellRegister.Read.MemoryMailboxStatusAvailable;
-}
-
-static inline
-void DAC960_BA_EnableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All = 0xFF;
-  InterruptMaskRegister.Bits.DisableInterrupts = false;
-  InterruptMaskRegister.Bits.DisableInterruptsI2O = true;
-  writeb(InterruptMaskRegister.All,
-	 ControllerBaseAddress + DAC960_BA_InterruptMaskRegisterOffset);
-}
-
-static inline
-void DAC960_BA_DisableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All = 0xFF;
-  InterruptMaskRegister.Bits.DisableInterrupts = true;
-  InterruptMaskRegister.Bits.DisableInterruptsI2O = true;
-  writeb(InterruptMaskRegister.All,
-	 ControllerBaseAddress + DAC960_BA_InterruptMaskRegisterOffset);
-}
-
-static inline
-bool DAC960_BA_InterruptsEnabledP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_BA_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All =
-    readb(ControllerBaseAddress + DAC960_BA_InterruptMaskRegisterOffset);
-  return !InterruptMaskRegister.Bits.DisableInterrupts;
-}
-
-static inline
-void DAC960_BA_WriteCommandMailbox(DAC960_V2_CommandMailbox_T
-				     *MemoryCommandMailbox,
-				   DAC960_V2_CommandMailbox_T
-				     *CommandMailbox)
-{
-  memcpy(&MemoryCommandMailbox->Words[1], &CommandMailbox->Words[1],
-	 sizeof(DAC960_V2_CommandMailbox_T) - sizeof(unsigned int));
-  wmb();
-  MemoryCommandMailbox->Words[0] = CommandMailbox->Words[0];
-  mb();
-}
-
-
-static inline
-void DAC960_BA_WriteHardwareMailbox(void __iomem *ControllerBaseAddress,
-				    dma_addr_t CommandMailboxDMA)
-{
-	dma_addr_writeql(CommandMailboxDMA,
-		ControllerBaseAddress +
-		DAC960_BA_CommandMailboxBusAddressOffset);
-}
-
-static inline DAC960_V2_CommandIdentifier_T
-DAC960_BA_ReadCommandIdentifier(void __iomem *ControllerBaseAddress)
-{
-  return readw(ControllerBaseAddress + DAC960_BA_CommandStatusOffset);
-}
-
-static inline DAC960_V2_CommandStatus_T
-DAC960_BA_ReadCommandStatus(void __iomem *ControllerBaseAddress)
-{
-  return readw(ControllerBaseAddress + DAC960_BA_CommandStatusOffset + 2);
-}
-
-static inline bool
-DAC960_BA_ReadErrorStatus(void __iomem *ControllerBaseAddress,
-			  unsigned char *ErrorStatus,
-			  unsigned char *Parameter0,
-			  unsigned char *Parameter1)
-{
-  DAC960_BA_ErrorStatusRegister_T ErrorStatusRegister;
-  ErrorStatusRegister.All =
-    readb(ControllerBaseAddress + DAC960_BA_ErrorStatusRegisterOffset);
-  if (!ErrorStatusRegister.Bits.ErrorStatusPending) return false;
-  ErrorStatusRegister.Bits.ErrorStatusPending = false;
-  *ErrorStatus = ErrorStatusRegister.All;
-  *Parameter0 =
-    readb(ControllerBaseAddress + DAC960_BA_CommandMailboxBusAddressOffset + 0);
-  *Parameter1 =
-    readb(ControllerBaseAddress + DAC960_BA_CommandMailboxBusAddressOffset + 1);
-  writeb(0xFF, ControllerBaseAddress + DAC960_BA_ErrorStatusRegisterOffset);
-  return true;
-}
-
-
-/*
-  Define the DAC960 LP Series Controller Interface Register Offsets.
-*/
-
-#define DAC960_LP_RegisterWindowSize		0x80
-
-typedef enum
-{
-  DAC960_LP_InboundDoorBellRegisterOffset =	0x20,
-  DAC960_LP_OutboundDoorBellRegisterOffset =	0x2C,
-  DAC960_LP_InterruptStatusRegisterOffset =	0x30,
-  DAC960_LP_InterruptMaskRegisterOffset =	0x34,
-  DAC960_LP_CommandMailboxBusAddressOffset =	0x10,
-  DAC960_LP_CommandStatusOffset =		0x18,
-  DAC960_LP_ErrorStatusRegisterOffset =		0x2E
-}
-DAC960_LP_RegisterOffsets_T;
-
-
-/*
-  Define the structure of the DAC960 LP Series Inbound Door Bell Register.
-*/
-
-typedef union DAC960_LP_InboundDoorBellRegister
-{
-  unsigned char All;
-  struct {
-    bool HardwareMailboxNewCommand:1;			/* Bit 0 */
-    bool AcknowledgeHardwareMailboxStatus:1;		/* Bit 1 */
-    bool GenerateInterrupt:1;				/* Bit 2 */
-    bool ControllerReset:1;				/* Bit 3 */
-    bool MemoryMailboxNewCommand:1;			/* Bit 4 */
-    unsigned char :3;					/* Bits 5-7 */
-  } Write;
-  struct {
-    bool HardwareMailboxFull:1;				/* Bit 0 */
-    bool InitializationInProgress:1;			/* Bit 1 */
-    unsigned char :6;					/* Bits 2-7 */
-  } Read;
-}
-DAC960_LP_InboundDoorBellRegister_T;
-
-
-/*
-  Define the structure of the DAC960 LP Series Outbound Door Bell Register.
-*/
-
-typedef union DAC960_LP_OutboundDoorBellRegister
-{
-  unsigned char All;
-  struct {
-    bool AcknowledgeHardwareMailboxInterrupt:1;		/* Bit 0 */
-    bool AcknowledgeMemoryMailboxInterrupt:1;		/* Bit 1 */
-    unsigned char :6;					/* Bits 2-7 */
-  } Write;
-  struct {
-    bool HardwareMailboxStatusAvailable:1;		/* Bit 0 */
-    bool MemoryMailboxStatusAvailable:1;		/* Bit 1 */
-    unsigned char :6;					/* Bits 2-7 */
-  } Read;
-}
-DAC960_LP_OutboundDoorBellRegister_T;
-
-
-/*
-  Define the structure of the DAC960 LP Series Interrupt Mask Register.
-*/
-
-typedef union DAC960_LP_InterruptMaskRegister
-{
-  unsigned char All;
-  struct {
-    unsigned int :2;					/* Bits 0-1 */
-    bool DisableInterrupts:1;				/* Bit 2 */
-    unsigned int :5;					/* Bits 3-7 */
-  } Bits;
-}
-DAC960_LP_InterruptMaskRegister_T;
-
-
-/*
-  Define the structure of the DAC960 LP Series Error Status Register.
-*/
-
-typedef union DAC960_LP_ErrorStatusRegister
-{
-  unsigned char All;
-  struct {
-    unsigned int :2;					/* Bits 0-1 */
-    bool ErrorStatusPending:1;				/* Bit 2 */
-    unsigned int :5;					/* Bits 3-7 */
-  } Bits;
-}
-DAC960_LP_ErrorStatusRegister_T;
-
-
-/*
-  Define inline functions to provide an abstraction for reading and writing the
-  DAC960 LP Series Controller Interface Registers.
-*/
-
-static inline
-void DAC960_LP_HardwareMailboxNewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.HardwareMailboxNewCommand = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LP_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LP_AcknowledgeHardwareMailboxStatus(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.AcknowledgeHardwareMailboxStatus = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LP_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LP_GenerateInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.GenerateInterrupt = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LP_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LP_ControllerReset(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.ControllerReset = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LP_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LP_MemoryMailboxNewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.MemoryMailboxNewCommand = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LP_InboundDoorBellRegisterOffset);
-}
-
-static inline
-bool DAC960_LP_HardwareMailboxFullP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_LP_InboundDoorBellRegisterOffset);
-  return InboundDoorBellRegister.Read.HardwareMailboxFull;
-}
-
-static inline
-bool DAC960_LP_InitializationInProgressP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_LP_InboundDoorBellRegisterOffset);
-  return InboundDoorBellRegister.Read.InitializationInProgress;
-}
-
-static inline
-void DAC960_LP_AcknowledgeHardwareMailboxInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeHardwareMailboxInterrupt = true;
-  writeb(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LP_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LP_AcknowledgeMemoryMailboxInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeMemoryMailboxInterrupt = true;
-  writeb(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LP_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LP_AcknowledgeInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeHardwareMailboxInterrupt = true;
-  OutboundDoorBellRegister.Write.AcknowledgeMemoryMailboxInterrupt = true;
-  writeb(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LP_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-bool DAC960_LP_HardwareMailboxStatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_LP_OutboundDoorBellRegisterOffset);
-  return OutboundDoorBellRegister.Read.HardwareMailboxStatusAvailable;
-}
-
-static inline
-bool DAC960_LP_MemoryMailboxStatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_LP_OutboundDoorBellRegisterOffset);
-  return OutboundDoorBellRegister.Read.MemoryMailboxStatusAvailable;
-}
-
-static inline
-void DAC960_LP_EnableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All = 0xFF;
-  InterruptMaskRegister.Bits.DisableInterrupts = false;
-  writeb(InterruptMaskRegister.All,
-	 ControllerBaseAddress + DAC960_LP_InterruptMaskRegisterOffset);
-}
-
-static inline
-void DAC960_LP_DisableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All = 0xFF;
-  InterruptMaskRegister.Bits.DisableInterrupts = true;
-  writeb(InterruptMaskRegister.All,
-	 ControllerBaseAddress + DAC960_LP_InterruptMaskRegisterOffset);
-}
-
-static inline
-bool DAC960_LP_InterruptsEnabledP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LP_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All =
-    readb(ControllerBaseAddress + DAC960_LP_InterruptMaskRegisterOffset);
-  return !InterruptMaskRegister.Bits.DisableInterrupts;
-}
-
-static inline
-void DAC960_LP_WriteCommandMailbox(DAC960_V2_CommandMailbox_T
-				     *MemoryCommandMailbox,
-				   DAC960_V2_CommandMailbox_T
-				     *CommandMailbox)
-{
-  memcpy(&MemoryCommandMailbox->Words[1], &CommandMailbox->Words[1],
-	 sizeof(DAC960_V2_CommandMailbox_T) - sizeof(unsigned int));
-  wmb();
-  MemoryCommandMailbox->Words[0] = CommandMailbox->Words[0];
-  mb();
-}
-
-static inline
-void DAC960_LP_WriteHardwareMailbox(void __iomem *ControllerBaseAddress,
-				    dma_addr_t CommandMailboxDMA)
-{
-	dma_addr_writeql(CommandMailboxDMA,
-		ControllerBaseAddress +
-		DAC960_LP_CommandMailboxBusAddressOffset);
-}
-
-static inline DAC960_V2_CommandIdentifier_T
-DAC960_LP_ReadCommandIdentifier(void __iomem *ControllerBaseAddress)
-{
-  return readw(ControllerBaseAddress + DAC960_LP_CommandStatusOffset);
-}
-
-static inline DAC960_V2_CommandStatus_T
-DAC960_LP_ReadCommandStatus(void __iomem *ControllerBaseAddress)
-{
-  return readw(ControllerBaseAddress + DAC960_LP_CommandStatusOffset + 2);
-}
-
-static inline bool
-DAC960_LP_ReadErrorStatus(void __iomem *ControllerBaseAddress,
-			  unsigned char *ErrorStatus,
-			  unsigned char *Parameter0,
-			  unsigned char *Parameter1)
-{
-  DAC960_LP_ErrorStatusRegister_T ErrorStatusRegister;
-  ErrorStatusRegister.All =
-    readb(ControllerBaseAddress + DAC960_LP_ErrorStatusRegisterOffset);
-  if (!ErrorStatusRegister.Bits.ErrorStatusPending) return false;
-  ErrorStatusRegister.Bits.ErrorStatusPending = false;
-  *ErrorStatus = ErrorStatusRegister.All;
-  *Parameter0 =
-    readb(ControllerBaseAddress + DAC960_LP_CommandMailboxBusAddressOffset + 0);
-  *Parameter1 =
-    readb(ControllerBaseAddress + DAC960_LP_CommandMailboxBusAddressOffset + 1);
-  writeb(0xFF, ControllerBaseAddress + DAC960_LP_ErrorStatusRegisterOffset);
-  return true;
-}
-
-
-/*
-  Define the DAC960 LA Series Controller Interface Register Offsets.
-*/
-
-#define DAC960_LA_RegisterWindowSize		0x80
-
-typedef enum
-{
-  DAC960_LA_InboundDoorBellRegisterOffset =	0x60,
-  DAC960_LA_OutboundDoorBellRegisterOffset =	0x61,
-  DAC960_LA_InterruptMaskRegisterOffset =	0x34,
-  DAC960_LA_CommandOpcodeRegisterOffset =	0x50,
-  DAC960_LA_CommandIdentifierRegisterOffset =	0x51,
-  DAC960_LA_MailboxRegister2Offset =		0x52,
-  DAC960_LA_MailboxRegister3Offset =		0x53,
-  DAC960_LA_MailboxRegister4Offset =		0x54,
-  DAC960_LA_MailboxRegister5Offset =		0x55,
-  DAC960_LA_MailboxRegister6Offset =		0x56,
-  DAC960_LA_MailboxRegister7Offset =		0x57,
-  DAC960_LA_MailboxRegister8Offset =		0x58,
-  DAC960_LA_MailboxRegister9Offset =		0x59,
-  DAC960_LA_MailboxRegister10Offset =		0x5A,
-  DAC960_LA_MailboxRegister11Offset =		0x5B,
-  DAC960_LA_MailboxRegister12Offset =		0x5C,
-  DAC960_LA_StatusCommandIdentifierRegOffset =	0x5D,
-  DAC960_LA_StatusRegisterOffset =		0x5E,
-  DAC960_LA_ErrorStatusRegisterOffset =		0x63
-}
-DAC960_LA_RegisterOffsets_T;
-
-
-/*
-  Define the structure of the DAC960 LA Series Inbound Door Bell Register.
-*/
-
-typedef union DAC960_LA_InboundDoorBellRegister
-{
-  unsigned char All;
-  struct {
-    bool HardwareMailboxNewCommand:1;			/* Bit 0 */
-    bool AcknowledgeHardwareMailboxStatus:1;		/* Bit 1 */
-    bool GenerateInterrupt:1;				/* Bit 2 */
-    bool ControllerReset:1;				/* Bit 3 */
-    bool MemoryMailboxNewCommand:1;			/* Bit 4 */
-    unsigned char :3;					/* Bits 5-7 */
-  } Write;
-  struct {
-    bool HardwareMailboxEmpty:1;			/* Bit 0 */
-    bool InitializationNotInProgress:1;		/* Bit 1 */
-    unsigned char :6;					/* Bits 2-7 */
-  } Read;
-}
-DAC960_LA_InboundDoorBellRegister_T;
-
-
-/*
-  Define the structure of the DAC960 LA Series Outbound Door Bell Register.
-*/
-
-typedef union DAC960_LA_OutboundDoorBellRegister
-{
-  unsigned char All;
-  struct {
-    bool AcknowledgeHardwareMailboxInterrupt:1;		/* Bit 0 */
-    bool AcknowledgeMemoryMailboxInterrupt:1;		/* Bit 1 */
-    unsigned char :6;					/* Bits 2-7 */
-  } Write;
-  struct {
-    bool HardwareMailboxStatusAvailable:1;		/* Bit 0 */
-    bool MemoryMailboxStatusAvailable:1;		/* Bit 1 */
-    unsigned char :6;					/* Bits 2-7 */
-  } Read;
-}
-DAC960_LA_OutboundDoorBellRegister_T;
-
-
-/*
-  Define the structure of the DAC960 LA Series Interrupt Mask Register.
-*/
-
-typedef union DAC960_LA_InterruptMaskRegister
-{
-  unsigned char All;
-  struct {
-    unsigned char :2;					/* Bits 0-1 */
-    bool DisableInterrupts:1;				/* Bit 2 */
-    unsigned char :5;					/* Bits 3-7 */
-  } Bits;
-}
-DAC960_LA_InterruptMaskRegister_T;
-
-
-/*
-  Define the structure of the DAC960 LA Series Error Status Register.
-*/
-
-typedef union DAC960_LA_ErrorStatusRegister
-{
-  unsigned char All;
-  struct {
-    unsigned int :2;					/* Bits 0-1 */
-    bool ErrorStatusPending:1;				/* Bit 2 */
-    unsigned int :5;					/* Bits 3-7 */
-  } Bits;
-}
-DAC960_LA_ErrorStatusRegister_T;
-
-
-/*
-  Define inline functions to provide an abstraction for reading and writing the
-  DAC960 LA Series Controller Interface Registers.
-*/
-
-static inline
-void DAC960_LA_HardwareMailboxNewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.HardwareMailboxNewCommand = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LA_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LA_AcknowledgeHardwareMailboxStatus(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.AcknowledgeHardwareMailboxStatus = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LA_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LA_GenerateInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.GenerateInterrupt = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LA_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LA_ControllerReset(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.ControllerReset = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LA_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LA_MemoryMailboxNewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.MemoryMailboxNewCommand = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LA_InboundDoorBellRegisterOffset);
-}
-
-static inline
-bool DAC960_LA_HardwareMailboxFullP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_LA_InboundDoorBellRegisterOffset);
-  return !InboundDoorBellRegister.Read.HardwareMailboxEmpty;
-}
-
-static inline
-bool DAC960_LA_InitializationInProgressP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_LA_InboundDoorBellRegisterOffset);
-  return !InboundDoorBellRegister.Read.InitializationNotInProgress;
-}
-
-static inline
-void DAC960_LA_AcknowledgeHardwareMailboxInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeHardwareMailboxInterrupt = true;
-  writeb(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LA_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LA_AcknowledgeMemoryMailboxInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeMemoryMailboxInterrupt = true;
-  writeb(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LA_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_LA_AcknowledgeInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeHardwareMailboxInterrupt = true;
-  OutboundDoorBellRegister.Write.AcknowledgeMemoryMailboxInterrupt = true;
-  writeb(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_LA_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-bool DAC960_LA_HardwareMailboxStatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_LA_OutboundDoorBellRegisterOffset);
-  return OutboundDoorBellRegister.Read.HardwareMailboxStatusAvailable;
-}
-
-static inline
-bool DAC960_LA_MemoryMailboxStatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_LA_OutboundDoorBellRegisterOffset);
-  return OutboundDoorBellRegister.Read.MemoryMailboxStatusAvailable;
-}
-
-static inline
-void DAC960_LA_EnableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All = 0xFF;
-  InterruptMaskRegister.Bits.DisableInterrupts = false;
-  writeb(InterruptMaskRegister.All,
-	 ControllerBaseAddress + DAC960_LA_InterruptMaskRegisterOffset);
-}
-
-static inline
-void DAC960_LA_DisableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All = 0xFF;
-  InterruptMaskRegister.Bits.DisableInterrupts = true;
-  writeb(InterruptMaskRegister.All,
-	 ControllerBaseAddress + DAC960_LA_InterruptMaskRegisterOffset);
-}
-
-static inline
-bool DAC960_LA_InterruptsEnabledP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_LA_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All =
-    readb(ControllerBaseAddress + DAC960_LA_InterruptMaskRegisterOffset);
-  return !InterruptMaskRegister.Bits.DisableInterrupts;
-}
-
-static inline
-void DAC960_LA_WriteCommandMailbox(DAC960_V1_CommandMailbox_T
-				     *MemoryCommandMailbox,
-				   DAC960_V1_CommandMailbox_T
-				     *CommandMailbox)
-{
-  MemoryCommandMailbox->Words[1] = CommandMailbox->Words[1];
-  MemoryCommandMailbox->Words[2] = CommandMailbox->Words[2];
-  MemoryCommandMailbox->Words[3] = CommandMailbox->Words[3];
-  wmb();
-  MemoryCommandMailbox->Words[0] = CommandMailbox->Words[0];
-  mb();
-}
-
-static inline
-void DAC960_LA_WriteHardwareMailbox(void __iomem *ControllerBaseAddress,
-				    DAC960_V1_CommandMailbox_T *CommandMailbox)
-{
-  writel(CommandMailbox->Words[0],
-	 ControllerBaseAddress + DAC960_LA_CommandOpcodeRegisterOffset);
-  writel(CommandMailbox->Words[1],
-	 ControllerBaseAddress + DAC960_LA_MailboxRegister4Offset);
-  writel(CommandMailbox->Words[2],
-	 ControllerBaseAddress + DAC960_LA_MailboxRegister8Offset);
-  writeb(CommandMailbox->Bytes[12],
-	 ControllerBaseAddress + DAC960_LA_MailboxRegister12Offset);
-}
-
-static inline DAC960_V1_CommandIdentifier_T
-DAC960_LA_ReadStatusCommandIdentifier(void __iomem *ControllerBaseAddress)
-{
-  return readb(ControllerBaseAddress
-	       + DAC960_LA_StatusCommandIdentifierRegOffset);
-}
-
-static inline DAC960_V1_CommandStatus_T
-DAC960_LA_ReadStatusRegister(void __iomem *ControllerBaseAddress)
-{
-  return readw(ControllerBaseAddress + DAC960_LA_StatusRegisterOffset);
-}
-
-static inline bool
-DAC960_LA_ReadErrorStatus(void __iomem *ControllerBaseAddress,
-			  unsigned char *ErrorStatus,
-			  unsigned char *Parameter0,
-			  unsigned char *Parameter1)
-{
-  DAC960_LA_ErrorStatusRegister_T ErrorStatusRegister;
-  ErrorStatusRegister.All =
-    readb(ControllerBaseAddress + DAC960_LA_ErrorStatusRegisterOffset);
-  if (!ErrorStatusRegister.Bits.ErrorStatusPending) return false;
-  ErrorStatusRegister.Bits.ErrorStatusPending = false;
-  *ErrorStatus = ErrorStatusRegister.All;
-  *Parameter0 =
-    readb(ControllerBaseAddress + DAC960_LA_CommandOpcodeRegisterOffset);
-  *Parameter1 =
-    readb(ControllerBaseAddress + DAC960_LA_CommandIdentifierRegisterOffset);
-  writeb(0xFF, ControllerBaseAddress + DAC960_LA_ErrorStatusRegisterOffset);
-  return true;
-}
-
-/*
-  Define the DAC960 PG Series Controller Interface Register Offsets.
-*/
-
-#define DAC960_PG_RegisterWindowSize		0x2000
-
-typedef enum
-{
-  DAC960_PG_InboundDoorBellRegisterOffset =	0x0020,
-  DAC960_PG_OutboundDoorBellRegisterOffset =	0x002C,
-  DAC960_PG_InterruptMaskRegisterOffset =	0x0034,
-  DAC960_PG_CommandOpcodeRegisterOffset =	0x1000,
-  DAC960_PG_CommandIdentifierRegisterOffset =	0x1001,
-  DAC960_PG_MailboxRegister2Offset =		0x1002,
-  DAC960_PG_MailboxRegister3Offset =		0x1003,
-  DAC960_PG_MailboxRegister4Offset =		0x1004,
-  DAC960_PG_MailboxRegister5Offset =		0x1005,
-  DAC960_PG_MailboxRegister6Offset =		0x1006,
-  DAC960_PG_MailboxRegister7Offset =		0x1007,
-  DAC960_PG_MailboxRegister8Offset =		0x1008,
-  DAC960_PG_MailboxRegister9Offset =		0x1009,
-  DAC960_PG_MailboxRegister10Offset =		0x100A,
-  DAC960_PG_MailboxRegister11Offset =		0x100B,
-  DAC960_PG_MailboxRegister12Offset =		0x100C,
-  DAC960_PG_StatusCommandIdentifierRegOffset =	0x1018,
-  DAC960_PG_StatusRegisterOffset =		0x101A,
-  DAC960_PG_ErrorStatusRegisterOffset =		0x103F
-}
-DAC960_PG_RegisterOffsets_T;
-
-
-/*
-  Define the structure of the DAC960 PG Series Inbound Door Bell Register.
-*/
-
-typedef union DAC960_PG_InboundDoorBellRegister
-{
-  unsigned int All;
-  struct {
-    bool HardwareMailboxNewCommand:1;			/* Bit 0 */
-    bool AcknowledgeHardwareMailboxStatus:1;		/* Bit 1 */
-    bool GenerateInterrupt:1;				/* Bit 2 */
-    bool ControllerReset:1;				/* Bit 3 */
-    bool MemoryMailboxNewCommand:1;			/* Bit 4 */
-    unsigned int :27;					/* Bits 5-31 */
-  } Write;
-  struct {
-    bool HardwareMailboxFull:1;				/* Bit 0 */
-    bool InitializationInProgress:1;			/* Bit 1 */
-    unsigned int :30;					/* Bits 2-31 */
-  } Read;
-}
-DAC960_PG_InboundDoorBellRegister_T;
-
-
-/*
-  Define the structure of the DAC960 PG Series Outbound Door Bell Register.
-*/
-
-typedef union DAC960_PG_OutboundDoorBellRegister
-{
-  unsigned int All;
-  struct {
-    bool AcknowledgeHardwareMailboxInterrupt:1;		/* Bit 0 */
-    bool AcknowledgeMemoryMailboxInterrupt:1;		/* Bit 1 */
-    unsigned int :30;					/* Bits 2-31 */
-  } Write;
-  struct {
-    bool HardwareMailboxStatusAvailable:1;		/* Bit 0 */
-    bool MemoryMailboxStatusAvailable:1;		/* Bit 1 */
-    unsigned int :30;					/* Bits 2-31 */
-  } Read;
-}
-DAC960_PG_OutboundDoorBellRegister_T;
-
-
-/*
-  Define the structure of the DAC960 PG Series Interrupt Mask Register.
-*/
-
-typedef union DAC960_PG_InterruptMaskRegister
-{
-  unsigned int All;
-  struct {
-    unsigned int MessageUnitInterruptMask1:2;		/* Bits 0-1 */
-    bool DisableInterrupts:1;				/* Bit 2 */
-    unsigned int MessageUnitInterruptMask2:5;		/* Bits 3-7 */
-    unsigned int Reserved0:24;				/* Bits 8-31 */
-  } Bits;
-}
-DAC960_PG_InterruptMaskRegister_T;
-
-
-/*
-  Define the structure of the DAC960 PG Series Error Status Register.
-*/
-
-typedef union DAC960_PG_ErrorStatusRegister
-{
-  unsigned char All;
-  struct {
-    unsigned int :2;					/* Bits 0-1 */
-    bool ErrorStatusPending:1;				/* Bit 2 */
-    unsigned int :5;					/* Bits 3-7 */
-  } Bits;
-}
-DAC960_PG_ErrorStatusRegister_T;
-
-
-/*
-  Define inline functions to provide an abstraction for reading and writing the
-  DAC960 PG Series Controller Interface Registers.
-*/
-
-static inline
-void DAC960_PG_HardwareMailboxNewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.HardwareMailboxNewCommand = true;
-  writel(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PG_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_PG_AcknowledgeHardwareMailboxStatus(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.AcknowledgeHardwareMailboxStatus = true;
-  writel(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PG_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_PG_GenerateInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.GenerateInterrupt = true;
-  writel(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PG_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_PG_ControllerReset(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.ControllerReset = true;
-  writel(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PG_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_PG_MemoryMailboxNewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.MemoryMailboxNewCommand = true;
-  writel(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PG_InboundDoorBellRegisterOffset);
-}
-
-static inline
-bool DAC960_PG_HardwareMailboxFullP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readl(ControllerBaseAddress + DAC960_PG_InboundDoorBellRegisterOffset);
-  return InboundDoorBellRegister.Read.HardwareMailboxFull;
-}
-
-static inline
-bool DAC960_PG_InitializationInProgressP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readl(ControllerBaseAddress + DAC960_PG_InboundDoorBellRegisterOffset);
-  return InboundDoorBellRegister.Read.InitializationInProgress;
-}
-
-static inline
-void DAC960_PG_AcknowledgeHardwareMailboxInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeHardwareMailboxInterrupt = true;
-  writel(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PG_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_PG_AcknowledgeMemoryMailboxInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeMemoryMailboxInterrupt = true;
-  writel(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PG_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_PG_AcknowledgeInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeHardwareMailboxInterrupt = true;
-  OutboundDoorBellRegister.Write.AcknowledgeMemoryMailboxInterrupt = true;
-  writel(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PG_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-bool DAC960_PG_HardwareMailboxStatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readl(ControllerBaseAddress + DAC960_PG_OutboundDoorBellRegisterOffset);
-  return OutboundDoorBellRegister.Read.HardwareMailboxStatusAvailable;
-}
-
-static inline
-bool DAC960_PG_MemoryMailboxStatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readl(ControllerBaseAddress + DAC960_PG_OutboundDoorBellRegisterOffset);
-  return OutboundDoorBellRegister.Read.MemoryMailboxStatusAvailable;
-}
-
-static inline
-void DAC960_PG_EnableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All = 0;
-  InterruptMaskRegister.Bits.MessageUnitInterruptMask1 = 0x3;
-  InterruptMaskRegister.Bits.DisableInterrupts = false;
-  InterruptMaskRegister.Bits.MessageUnitInterruptMask2 = 0x1F;
-  writel(InterruptMaskRegister.All,
-	 ControllerBaseAddress + DAC960_PG_InterruptMaskRegisterOffset);
-}
-
-static inline
-void DAC960_PG_DisableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All = 0;
-  InterruptMaskRegister.Bits.MessageUnitInterruptMask1 = 0x3;
-  InterruptMaskRegister.Bits.DisableInterrupts = true;
-  InterruptMaskRegister.Bits.MessageUnitInterruptMask2 = 0x1F;
-  writel(InterruptMaskRegister.All,
-	 ControllerBaseAddress + DAC960_PG_InterruptMaskRegisterOffset);
-}
-
-static inline
-bool DAC960_PG_InterruptsEnabledP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PG_InterruptMaskRegister_T InterruptMaskRegister;
-  InterruptMaskRegister.All =
-    readl(ControllerBaseAddress + DAC960_PG_InterruptMaskRegisterOffset);
-  return !InterruptMaskRegister.Bits.DisableInterrupts;
-}
-
-static inline
-void DAC960_PG_WriteCommandMailbox(DAC960_V1_CommandMailbox_T
-				     *MemoryCommandMailbox,
-				   DAC960_V1_CommandMailbox_T
-				     *CommandMailbox)
-{
-  MemoryCommandMailbox->Words[1] = CommandMailbox->Words[1];
-  MemoryCommandMailbox->Words[2] = CommandMailbox->Words[2];
-  MemoryCommandMailbox->Words[3] = CommandMailbox->Words[3];
-  wmb();
-  MemoryCommandMailbox->Words[0] = CommandMailbox->Words[0];
-  mb();
-}
-
-static inline
-void DAC960_PG_WriteHardwareMailbox(void __iomem *ControllerBaseAddress,
-				    DAC960_V1_CommandMailbox_T *CommandMailbox)
-{
-  writel(CommandMailbox->Words[0],
-	 ControllerBaseAddress + DAC960_PG_CommandOpcodeRegisterOffset);
-  writel(CommandMailbox->Words[1],
-	 ControllerBaseAddress + DAC960_PG_MailboxRegister4Offset);
-  writel(CommandMailbox->Words[2],
-	 ControllerBaseAddress + DAC960_PG_MailboxRegister8Offset);
-  writeb(CommandMailbox->Bytes[12],
-	 ControllerBaseAddress + DAC960_PG_MailboxRegister12Offset);
-}
-
-static inline DAC960_V1_CommandIdentifier_T
-DAC960_PG_ReadStatusCommandIdentifier(void __iomem *ControllerBaseAddress)
-{
-  return readb(ControllerBaseAddress
-	       + DAC960_PG_StatusCommandIdentifierRegOffset);
-}
-
-static inline DAC960_V1_CommandStatus_T
-DAC960_PG_ReadStatusRegister(void __iomem *ControllerBaseAddress)
-{
-  return readw(ControllerBaseAddress + DAC960_PG_StatusRegisterOffset);
-}
-
-static inline bool
-DAC960_PG_ReadErrorStatus(void __iomem *ControllerBaseAddress,
-			  unsigned char *ErrorStatus,
-			  unsigned char *Parameter0,
-			  unsigned char *Parameter1)
-{
-  DAC960_PG_ErrorStatusRegister_T ErrorStatusRegister;
-  ErrorStatusRegister.All =
-    readb(ControllerBaseAddress + DAC960_PG_ErrorStatusRegisterOffset);
-  if (!ErrorStatusRegister.Bits.ErrorStatusPending) return false;
-  ErrorStatusRegister.Bits.ErrorStatusPending = false;
-  *ErrorStatus = ErrorStatusRegister.All;
-  *Parameter0 =
-    readb(ControllerBaseAddress + DAC960_PG_CommandOpcodeRegisterOffset);
-  *Parameter1 =
-    readb(ControllerBaseAddress + DAC960_PG_CommandIdentifierRegisterOffset);
-  writeb(0, ControllerBaseAddress + DAC960_PG_ErrorStatusRegisterOffset);
-  return true;
-}
-
-/*
-  Define the DAC960 PD Series Controller Interface Register Offsets.
-*/
-
-#define DAC960_PD_RegisterWindowSize		0x80
-
-typedef enum
-{
-  DAC960_PD_CommandOpcodeRegisterOffset =	0x00,
-  DAC960_PD_CommandIdentifierRegisterOffset =	0x01,
-  DAC960_PD_MailboxRegister2Offset =		0x02,
-  DAC960_PD_MailboxRegister3Offset =		0x03,
-  DAC960_PD_MailboxRegister4Offset =		0x04,
-  DAC960_PD_MailboxRegister5Offset =		0x05,
-  DAC960_PD_MailboxRegister6Offset =		0x06,
-  DAC960_PD_MailboxRegister7Offset =		0x07,
-  DAC960_PD_MailboxRegister8Offset =		0x08,
-  DAC960_PD_MailboxRegister9Offset =		0x09,
-  DAC960_PD_MailboxRegister10Offset =		0x0A,
-  DAC960_PD_MailboxRegister11Offset =		0x0B,
-  DAC960_PD_MailboxRegister12Offset =		0x0C,
-  DAC960_PD_StatusCommandIdentifierRegOffset =	0x0D,
-  DAC960_PD_StatusRegisterOffset =		0x0E,
-  DAC960_PD_ErrorStatusRegisterOffset =		0x3F,
-  DAC960_PD_InboundDoorBellRegisterOffset =	0x40,
-  DAC960_PD_OutboundDoorBellRegisterOffset =	0x41,
-  DAC960_PD_InterruptEnableRegisterOffset =	0x43
-}
-DAC960_PD_RegisterOffsets_T;
-
-
-/*
-  Define the structure of the DAC960 PD Series Inbound Door Bell Register.
-*/
-
-typedef union DAC960_PD_InboundDoorBellRegister
-{
-  unsigned char All;
-  struct {
-    bool NewCommand:1;					/* Bit 0 */
-    bool AcknowledgeStatus:1;				/* Bit 1 */
-    bool GenerateInterrupt:1;				/* Bit 2 */
-    bool ControllerReset:1;				/* Bit 3 */
-    unsigned char :4;					/* Bits 4-7 */
-  } Write;
-  struct {
-    bool MailboxFull:1;					/* Bit 0 */
-    bool InitializationInProgress:1;			/* Bit 1 */
-    unsigned char :6;					/* Bits 2-7 */
-  } Read;
-}
-DAC960_PD_InboundDoorBellRegister_T;
-
-
-/*
-  Define the structure of the DAC960 PD Series Outbound Door Bell Register.
-*/
-
-typedef union DAC960_PD_OutboundDoorBellRegister
-{
-  unsigned char All;
-  struct {
-    bool AcknowledgeInterrupt:1;			/* Bit 0 */
-    unsigned char :7;					/* Bits 1-7 */
-  } Write;
-  struct {
-    bool StatusAvailable:1;				/* Bit 0 */
-    unsigned char :7;					/* Bits 1-7 */
-  } Read;
-}
-DAC960_PD_OutboundDoorBellRegister_T;
-
-
-/*
-  Define the structure of the DAC960 PD Series Interrupt Enable Register.
-*/
-
-typedef union DAC960_PD_InterruptEnableRegister
-{
-  unsigned char All;
-  struct {
-    bool EnableInterrupts:1;				/* Bit 0 */
-    unsigned char :7;					/* Bits 1-7 */
-  } Bits;
-}
-DAC960_PD_InterruptEnableRegister_T;
-
-
-/*
-  Define the structure of the DAC960 PD Series Error Status Register.
-*/
-
-typedef union DAC960_PD_ErrorStatusRegister
-{
-  unsigned char All;
-  struct {
-    unsigned int :2;					/* Bits 0-1 */
-    bool ErrorStatusPending:1;				/* Bit 2 */
-    unsigned int :5;					/* Bits 3-7 */
-  } Bits;
-}
-DAC960_PD_ErrorStatusRegister_T;
-
-
-/*
-  Define inline functions to provide an abstraction for reading and writing the
-  DAC960 PD Series Controller Interface Registers.
-*/
-
-static inline
-void DAC960_PD_NewCommand(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.NewCommand = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PD_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_PD_AcknowledgeStatus(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.AcknowledgeStatus = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PD_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_PD_GenerateInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.GenerateInterrupt = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PD_InboundDoorBellRegisterOffset);
-}
-
-static inline
-void DAC960_PD_ControllerReset(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All = 0;
-  InboundDoorBellRegister.Write.ControllerReset = true;
-  writeb(InboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PD_InboundDoorBellRegisterOffset);
-}
-
-static inline
-bool DAC960_PD_MailboxFullP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_PD_InboundDoorBellRegisterOffset);
-  return InboundDoorBellRegister.Read.MailboxFull;
-}
-
-static inline
-bool DAC960_PD_InitializationInProgressP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_InboundDoorBellRegister_T InboundDoorBellRegister;
-  InboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_PD_InboundDoorBellRegisterOffset);
-  return InboundDoorBellRegister.Read.InitializationInProgress;
-}
-
-static inline
-void DAC960_PD_AcknowledgeInterrupt(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All = 0;
-  OutboundDoorBellRegister.Write.AcknowledgeInterrupt = true;
-  writeb(OutboundDoorBellRegister.All,
-	 ControllerBaseAddress + DAC960_PD_OutboundDoorBellRegisterOffset);
-}
-
-static inline
-bool DAC960_PD_StatusAvailableP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_OutboundDoorBellRegister_T OutboundDoorBellRegister;
-  OutboundDoorBellRegister.All =
-    readb(ControllerBaseAddress + DAC960_PD_OutboundDoorBellRegisterOffset);
-  return OutboundDoorBellRegister.Read.StatusAvailable;
-}
-
-static inline
-void DAC960_PD_EnableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_InterruptEnableRegister_T InterruptEnableRegister;
-  InterruptEnableRegister.All = 0;
-  InterruptEnableRegister.Bits.EnableInterrupts = true;
-  writeb(InterruptEnableRegister.All,
-	 ControllerBaseAddress + DAC960_PD_InterruptEnableRegisterOffset);
-}
-
-static inline
-void DAC960_PD_DisableInterrupts(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_InterruptEnableRegister_T InterruptEnableRegister;
-  InterruptEnableRegister.All = 0;
-  InterruptEnableRegister.Bits.EnableInterrupts = false;
-  writeb(InterruptEnableRegister.All,
-	 ControllerBaseAddress + DAC960_PD_InterruptEnableRegisterOffset);
-}
-
-static inline
-bool DAC960_PD_InterruptsEnabledP(void __iomem *ControllerBaseAddress)
-{
-  DAC960_PD_InterruptEnableRegister_T InterruptEnableRegister;
-  InterruptEnableRegister.All =
-    readb(ControllerBaseAddress + DAC960_PD_InterruptEnableRegisterOffset);
-  return InterruptEnableRegister.Bits.EnableInterrupts;
-}
-
-static inline
-void DAC960_PD_WriteCommandMailbox(void __iomem *ControllerBaseAddress,
-				   DAC960_V1_CommandMailbox_T *CommandMailbox)
-{
-  writel(CommandMailbox->Words[0],
-	 ControllerBaseAddress + DAC960_PD_CommandOpcodeRegisterOffset);
-  writel(CommandMailbox->Words[1],
-	 ControllerBaseAddress + DAC960_PD_MailboxRegister4Offset);
-  writel(CommandMailbox->Words[2],
-	 ControllerBaseAddress + DAC960_PD_MailboxRegister8Offset);
-  writeb(CommandMailbox->Bytes[12],
-	 ControllerBaseAddress + DAC960_PD_MailboxRegister12Offset);
-}
-
-static inline DAC960_V1_CommandIdentifier_T
-DAC960_PD_ReadStatusCommandIdentifier(void __iomem *ControllerBaseAddress)
-{
-  return readb(ControllerBaseAddress
-	       + DAC960_PD_StatusCommandIdentifierRegOffset);
-}
-
-static inline DAC960_V1_CommandStatus_T
-DAC960_PD_ReadStatusRegister(void __iomem *ControllerBaseAddress)
-{
-  return readw(ControllerBaseAddress + DAC960_PD_StatusRegisterOffset);
-}
-
-static inline bool
-DAC960_PD_ReadErrorStatus(void __iomem *ControllerBaseAddress,
-			  unsigned char *ErrorStatus,
-			  unsigned char *Parameter0,
-			  unsigned char *Parameter1)
-{
-  DAC960_PD_ErrorStatusRegister_T ErrorStatusRegister;
-  ErrorStatusRegister.All =
-    readb(ControllerBaseAddress + DAC960_PD_ErrorStatusRegisterOffset);
-  if (!ErrorStatusRegister.Bits.ErrorStatusPending) return false;
-  ErrorStatusRegister.Bits.ErrorStatusPending = false;
-  *ErrorStatus = ErrorStatusRegister.All;
-  *Parameter0 =
-    readb(ControllerBaseAddress + DAC960_PD_CommandOpcodeRegisterOffset);
-  *Parameter1 =
-    readb(ControllerBaseAddress + DAC960_PD_CommandIdentifierRegisterOffset);
-  writeb(0, ControllerBaseAddress + DAC960_PD_ErrorStatusRegisterOffset);
-  return true;
-}
-
-static inline void DAC960_P_To_PD_TranslateEnquiry(void *Enquiry)
-{
-  memcpy(Enquiry + 132, Enquiry + 36, 64);
-  memset(Enquiry + 36, 0, 96);
-}
-
-static inline void DAC960_P_To_PD_TranslateDeviceState(void *DeviceState)
-{
-  memcpy(DeviceState + 2, DeviceState + 3, 1);
-  memmove(DeviceState + 4, DeviceState + 5, 2);
-  memmove(DeviceState + 6, DeviceState + 8, 4);
-}
-
-static inline
-void DAC960_PD_To_P_TranslateReadWriteCommand(DAC960_V1_CommandMailbox_T
-					      *CommandMailbox)
-{
-  int LogicalDriveNumber = CommandMailbox->Type5.LD.LogicalDriveNumber;
-  CommandMailbox->Bytes[3] &= 0x7;
-  CommandMailbox->Bytes[3] |= CommandMailbox->Bytes[7] << 6;
-  CommandMailbox->Bytes[7] = LogicalDriveNumber;
-}
-
-static inline
-void DAC960_P_To_PD_TranslateReadWriteCommand(DAC960_V1_CommandMailbox_T
-					      *CommandMailbox)
-{
-  int LogicalDriveNumber = CommandMailbox->Bytes[7];
-  CommandMailbox->Bytes[7] = CommandMailbox->Bytes[3] >> 6;
-  CommandMailbox->Bytes[3] &= 0x7;
-  CommandMailbox->Bytes[3] |= LogicalDriveNumber << 3;
-}
-
-
-/*
-  Define prototypes for the forward referenced DAC960 Driver Internal Functions.
-*/
-
-static void DAC960_FinalizeController(DAC960_Controller_T *);
-static void DAC960_V1_QueueReadWriteCommand(DAC960_Command_T *);
-static void DAC960_V2_QueueReadWriteCommand(DAC960_Command_T *); 
-static void DAC960_RequestFunction(struct request_queue *);
-static irqreturn_t DAC960_BA_InterruptHandler(int, void *);
-static irqreturn_t DAC960_LP_InterruptHandler(int, void *);
-static irqreturn_t DAC960_LA_InterruptHandler(int, void *);
-static irqreturn_t DAC960_PG_InterruptHandler(int, void *);
-static irqreturn_t DAC960_PD_InterruptHandler(int, void *);
-static irqreturn_t DAC960_P_InterruptHandler(int, void *);
-static void DAC960_V1_QueueMonitoringCommand(DAC960_Command_T *);
-static void DAC960_V2_QueueMonitoringCommand(DAC960_Command_T *);
-static void DAC960_MonitoringTimerFunction(struct timer_list *);
-static void DAC960_Message(DAC960_MessageLevel_T, unsigned char *,
-			   DAC960_Controller_T *, ...);
-static void DAC960_CreateProcEntries(DAC960_Controller_T *);
-static void DAC960_DestroyProcEntries(DAC960_Controller_T *);
-
-#endif /* DAC960_DriverVersion */
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index d4913516823f..20bb4bfa4be6 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -121,18 +121,6 @@ source "drivers/block/mtip32xx/Kconfig"
 
 source "drivers/block/zram/Kconfig"
 
-config BLK_DEV_DAC960
-	tristate "Mylex DAC960/DAC1100 PCI RAID Controller support"
-	depends on PCI
-	help
-	  This driver adds support for the Mylex DAC960, AcceleRAID, and
-	  eXtremeRAID PCI RAID controllers.  See the file
-	  <file:Documentation/blockdev/README.DAC960> for further information
-	  about this driver.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called DAC960.
-
 config BLK_DEV_UMEM
 	tristate "Micro Memory MM5415 Battery Backed RAM support"
 	depends on PCI
@@ -461,7 +449,6 @@ config BLK_DEV_RBD
 	select LIBCRC32C
 	select CRYPTO_AES
 	select CRYPTO
-	default n
 	help
 	  Say Y here if you want include the Rados block device, which stripes
 	  a block device over objects stored in the Ceph distributed object
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index 8566b188368b..a53cc1e3a2d3 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -16,7 +16,6 @@ obj-$(CONFIG_ATARI_FLOPPY)	+= ataflop.o
 obj-$(CONFIG_AMIGA_Z2RAM)	+= z2ram.o
 obj-$(CONFIG_BLK_DEV_RAM)	+= brd.o
 obj-$(CONFIG_BLK_DEV_LOOP)	+= loop.o
-obj-$(CONFIG_BLK_DEV_DAC960)	+= DAC960.o
 obj-$(CONFIG_XILINX_SYSACE)	+= xsysace.o
 obj-$(CONFIG_CDROM_PKTCDVD)	+= pktcdvd.o
 obj-$(CONFIG_SUNVDC)		+= sunvdc.o
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 3aaf6af3ec23..bf996bd44cfc 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -61,10 +61,8 @@
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
-#include <linux/amifdreg.h>
-#include <linux/amifd.h>
 #include <linux/fs.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/elevator.h>
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
@@ -87,6 +85,126 @@
  */
 
 /*
+ * CIAAPRA bits (read only)
+ */
+
+#define DSKRDY      (0x1<<5)        /* disk ready when low */
+#define DSKTRACK0   (0x1<<4)        /* head at track zero when low */
+#define DSKPROT     (0x1<<3)        /* disk protected when low */
+#define DSKCHANGE   (0x1<<2)        /* low when disk removed */
+
+/*
+ * CIAAPRB bits (read/write)
+ */
+
+#define DSKMOTOR    (0x1<<7)        /* motor on when low */
+#define DSKSEL3     (0x1<<6)        /* select drive 3 when low */
+#define DSKSEL2     (0x1<<5)        /* select drive 2 when low */
+#define DSKSEL1     (0x1<<4)        /* select drive 1 when low */
+#define DSKSEL0     (0x1<<3)        /* select drive 0 when low */
+#define DSKSIDE     (0x1<<2)        /* side selection: 0 = upper, 1 = lower */
+#define DSKDIREC    (0x1<<1)        /* step direction: 0=in, 1=out (to trk 0) */
+#define DSKSTEP     (0x1)           /* pulse low to step head 1 track */
+
+/*
+ * DSKBYTR bits (read only)
+ */
+
+#define DSKBYT      (1<<15)         /* register contains valid byte when set */
+#define DMAON       (1<<14)         /* disk DMA enabled */
+#define DISKWRITE   (1<<13)         /* disk write bit in DSKLEN enabled */
+#define WORDEQUAL   (1<<12)         /* DSKSYNC register match when true */
+/* bits 7-0 are data */
+
+/*
+ * ADKCON/ADKCONR bits
+ */
+
+#ifndef SETCLR
+#define ADK_SETCLR      (1<<15)     /* control bit */
+#endif
+#define ADK_PRECOMP1    (1<<14)     /* precompensation selection */
+#define ADK_PRECOMP0    (1<<13)     /* 00=none, 01=140ns, 10=280ns, 11=500ns */
+#define ADK_MFMPREC     (1<<12)     /* 0=GCR precomp., 1=MFM precomp. */
+#define ADK_WORDSYNC    (1<<10)     /* enable DSKSYNC auto DMA */
+#define ADK_MSBSYNC     (1<<9)      /* when 1, enable sync on MSbit (for GCR) */
+#define ADK_FAST        (1<<8)      /* bit cell: 0=2us (GCR), 1=1us (MFM) */
+
+/*
+ * DSKLEN bits
+ */
+
+#define DSKLEN_DMAEN    (1<<15)
+#define DSKLEN_WRITE    (1<<14)
+
+/*
+ * INTENA/INTREQ bits
+ */
+
+#define DSKINDEX    (0x1<<4)        /* DSKINDEX bit */
+
+/*
+ * Misc
+ */
+
+#define MFM_SYNC    0x4489          /* standard MFM sync value */
+
+/* Values for FD_COMMAND */
+#define FD_RECALIBRATE		0x07	/* move to track 0 */
+#define FD_SEEK			0x0F	/* seek track */
+#define FD_READ			0xE6	/* read with MT, MFM, SKip deleted */
+#define FD_WRITE		0xC5	/* write with MT, MFM */
+#define FD_SENSEI		0x08	/* Sense Interrupt Status */
+#define FD_SPECIFY		0x03	/* specify HUT etc */
+#define FD_FORMAT		0x4D	/* format one track */
+#define FD_VERSION		0x10	/* get version code */
+#define FD_CONFIGURE		0x13	/* configure FIFO operation */
+#define FD_PERPENDICULAR	0x12	/* perpendicular r/w mode */
+
+#define FD_MAX_UNITS    4	/* Max. Number of drives */
+#define FLOPPY_MAX_SECTORS	22	/* Max. Number of sectors per track */
+
+struct fd_data_type {
+	char *name;		/* description of data type */
+	int sects;		/* sectors per track */
+	int (*read_fkt)(int);	/* read whole track */
+	void (*write_fkt)(int);	/* write whole track */
+};
+
+struct fd_drive_type {
+	unsigned long code;		/* code returned from drive */
+	char *name;			/* description of drive */
+	unsigned int tracks;	/* number of tracks */
+	unsigned int heads;		/* number of heads */
+	unsigned int read_size;	/* raw read size for one track */
+	unsigned int write_size;	/* raw write size for one track */
+	unsigned int sect_mult;	/* sectors and gap multiplier (HD = 2) */
+	unsigned int precomp1;	/* start track for precomp 1 */
+	unsigned int precomp2;	/* start track for precomp 2 */
+	unsigned int step_delay;	/* time (in ms) for delay after step */
+	unsigned int settle_time;	/* time to settle after dir change */
+	unsigned int side_time;	/* time needed to change sides */
+};
+
+struct amiga_floppy_struct {
+	struct fd_drive_type *type;	/* type of floppy for this unit */
+	struct fd_data_type *dtype;	/* type of floppy for this unit */
+	int track;			/* current track (-1 == unknown) */
+	unsigned char *trackbuf;	/* current track (kmaloc()'d */
+
+	int blocks;			/* total # blocks on disk */
+
+	int changed;			/* true when not known */
+	int disk;			/* disk in drive (-1 == unknown) */
+	int motor;			/* true when motor is at speed */
+	int busy;			/* true when drive is active */
+	int dirty;			/* true when trackbuf is not on disk */
+	int status;			/* current error code for unit */
+	struct gendisk *gendisk;
+	struct blk_mq_tag_set tag_set;
+};
+
+/*
  *  Error codes
  */
 #define FD_OK		0	/* operation succeeded */
@@ -164,7 +282,6 @@ static volatile int selected = -1;	/* currently selected drive */
 static int writepending;
 static int writefromint;
 static char *raw_buf;
-static int fdc_queue;
 
 static DEFINE_SPINLOCK(amiflop_lock);
 
@@ -1337,76 +1454,20 @@ static int get_track(int drive, int track)
 	return -1;
 }
 
-/*
- * Round-robin between our available drives, doing one request from each
- */
-static struct request *set_next_request(void)
-{
-	struct request_queue *q;
-	int cnt = FD_MAX_UNITS;
-	struct request *rq = NULL;
-
-	/* Find next queue we can dispatch from */
-	fdc_queue = fdc_queue + 1;
-	if (fdc_queue == FD_MAX_UNITS)
-		fdc_queue = 0;
-
-	for(cnt = FD_MAX_UNITS; cnt > 0; cnt--) {
-
-		if (unit[fdc_queue].type->code == FD_NODRIVE) {
-			if (++fdc_queue == FD_MAX_UNITS)
-				fdc_queue = 0;
-			continue;
-		}
-
-		q = unit[fdc_queue].gendisk->queue;
-		if (q) {
-			rq = blk_fetch_request(q);
-			if (rq)
-				break;
-		}
-
-		if (++fdc_queue == FD_MAX_UNITS)
-			fdc_queue = 0;
-	}
-
-	return rq;
-}
-
-static void redo_fd_request(void)
+static blk_status_t amiflop_rw_cur_segment(struct amiga_floppy_struct *floppy,
+					   struct request *rq)
 {
-	struct request *rq;
+	int drive = floppy - unit;
 	unsigned int cnt, block, track, sector;
-	int drive;
-	struct amiga_floppy_struct *floppy;
 	char *data;
-	unsigned long flags;
-	blk_status_t err;
-
-next_req:
-	rq = set_next_request();
-	if (!rq) {
-		/* Nothing left to do */
-		return;
-	}
-
-	floppy = rq->rq_disk->private_data;
-	drive = floppy - unit;
 
-next_segment:
-	/* Here someone could investigate to be more efficient */
-	for (cnt = 0, err = BLK_STS_OK; cnt < blk_rq_cur_sectors(rq); cnt++) {
+	for (cnt = 0; cnt < blk_rq_cur_sectors(rq); cnt++) {
 #ifdef DEBUG
 		printk("fd: sector %ld + %d requested for %s\n",
 		       blk_rq_pos(rq), cnt,
 		       (rq_data_dir(rq) == READ) ? "read" : "write");
 #endif
 		block = blk_rq_pos(rq) + cnt;
-		if ((int)block > floppy->blocks) {
-			err = BLK_STS_IOERR;
-			break;
-		}
-
 		track = block / (floppy->dtype->sects * floppy->type->sect_mult);
 		sector = block % (floppy->dtype->sects * floppy->type->sect_mult);
 		data = bio_data(rq->bio) + 512 * cnt;
@@ -1415,10 +1476,8 @@ next_segment:
 		       "0x%08lx\n", track, sector, data);
 #endif
 
-		if (get_track(drive, track) == -1) {
-			err = BLK_STS_IOERR;
-			break;
-		}
+		if (get_track(drive, track) == -1)
+			return BLK_STS_IOERR;
 
 		if (rq_data_dir(rq) == READ) {
 			memcpy(data, floppy->trackbuf + sector * 512, 512);
@@ -1426,31 +1485,40 @@ next_segment:
 			memcpy(floppy->trackbuf + sector * 512, data, 512);
 
 			/* keep the drive spinning while writes are scheduled */
-			if (!fd_motor_on(drive)) {
-				err = BLK_STS_IOERR;
-				break;
-			}
+			if (!fd_motor_on(drive))
+				return BLK_STS_IOERR;
 			/*
 			 * setup a callback to write the track buffer
 			 * after a short (1 tick) delay.
 			 */
-			local_irq_save(flags);
-
 			floppy->dirty = 1;
 		        /* reset the timer */
 			mod_timer (flush_track_timer + drive, jiffies + 1);
-			local_irq_restore(flags);
 		}
 	}
 
-	if (__blk_end_request_cur(rq, err))
-		goto next_segment;
-	goto next_req;
+	return BLK_STS_OK;
 }
 
-static void do_fd_request(struct request_queue * q)
+static blk_status_t amiflop_queue_rq(struct blk_mq_hw_ctx *hctx,
+				     const struct blk_mq_queue_data *bd)
 {
-	redo_fd_request();
+	struct request *rq = bd->rq;
+	struct amiga_floppy_struct *floppy = rq->rq_disk->private_data;
+	blk_status_t err;
+
+	if (!spin_trylock_irq(&amiflop_lock))
+		return BLK_STS_DEV_RESOURCE;
+
+	blk_mq_start_request(rq);
+
+	do {
+		err = amiflop_rw_cur_segment(floppy, rq);
+	} while (blk_update_request(rq, err, blk_rq_cur_bytes(rq)));
+	blk_mq_end_request(rq, err);
+
+	spin_unlock_irq(&amiflop_lock);
+	return BLK_STS_OK;
 }
 
 static int fd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
@@ -1701,11 +1769,47 @@ static const struct block_device_operations floppy_fops = {
 	.check_events	= amiga_check_events,
 };
 
+static const struct blk_mq_ops amiflop_mq_ops = {
+	.queue_rq = amiflop_queue_rq,
+};
+
+static struct gendisk *fd_alloc_disk(int drive)
+{
+	struct gendisk *disk;
+
+	disk = alloc_disk(1);
+	if (!disk)
+		goto out;
+
+	disk->queue = blk_mq_init_sq_queue(&unit[drive].tag_set, &amiflop_mq_ops,
+						2, BLK_MQ_F_SHOULD_MERGE);
+	if (IS_ERR(disk->queue)) {
+		disk->queue = NULL;
+		goto out_put_disk;
+	}
+
+	unit[drive].trackbuf = kmalloc(FLOPPY_MAX_SECTORS * 512, GFP_KERNEL);
+	if (!unit[drive].trackbuf)
+		goto out_cleanup_queue;
+
+	return disk;
+
+out_cleanup_queue:
+	blk_cleanup_queue(disk->queue);
+	disk->queue = NULL;
+	blk_mq_free_tag_set(&unit[drive].tag_set);
+out_put_disk:
+	put_disk(disk);
+out:
+	unit[drive].type->code = FD_NODRIVE;
+	return NULL;
+}
+
 static int __init fd_probe_drives(void)
 {
 	int drive,drives,nomem;
 
-	printk(KERN_INFO "FD: probing units\nfound ");
+	pr_info("FD: probing units\nfound");
 	drives=0;
 	nomem=0;
 	for(drive=0;drive<FD_MAX_UNITS;drive++) {
@@ -1713,27 +1817,17 @@ static int __init fd_probe_drives(void)
 		fd_probe(drive);
 		if (unit[drive].type->code == FD_NODRIVE)
 			continue;
-		disk = alloc_disk(1);
+
+		disk = fd_alloc_disk(drive);
 		if (!disk) {
-			unit[drive].type->code = FD_NODRIVE;
+			pr_cont(" no mem for fd%d", drive);
+			nomem = 1;
 			continue;
 		}
 		unit[drive].gendisk = disk;
-
-		disk->queue = blk_init_queue(do_fd_request, &amiflop_lock);
-		if (!disk->queue) {
-			unit[drive].type->code = FD_NODRIVE;
-			continue;
-		}
-
 		drives++;
-		if ((unit[drive].trackbuf = kmalloc(FLOPPY_MAX_SECTORS * 512, GFP_KERNEL)) == NULL) {
-			printk("no mem for ");
-			unit[drive].type = &drive_types[num_dr_types - 1]; /* FD_NODRIVE */
-			drives--;
-			nomem = 1;
-		}
-		printk("fd%d ",drive);
+
+		pr_cont(" fd%d",drive);
 		disk->major = FLOPPY_MAJOR;
 		disk->first_minor = drive;
 		disk->fops = &floppy_fops;
@@ -1744,11 +1838,11 @@ static int __init fd_probe_drives(void)
 	}
 	if ((drives > 0) || (nomem == 0)) {
 		if (drives == 0)
-			printk("no drives");
-		printk("\n");
+			pr_cont(" no drives");
+		pr_cont("\n");
 		return drives;
 	}
-	printk("\n");
+	pr_cont("\n");
 	return -ENOMEM;
 }
  
@@ -1831,30 +1925,6 @@ out_blkdev:
 	return ret;
 }
 
-#if 0 /* not safe to unload */
-static int __exit amiga_floppy_remove(struct platform_device *pdev)
-{
-	int i;
-
-	for( i = 0; i < FD_MAX_UNITS; i++) {
-		if (unit[i].type->code != FD_NODRIVE) {
-			struct request_queue *q = unit[i].gendisk->queue;
-			del_gendisk(unit[i].gendisk);
-			put_disk(unit[i].gendisk);
-			kfree(unit[i].trackbuf);
-			if (q)
-				blk_cleanup_queue(q);
-		}
-	}
-	blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
-	free_irq(IRQ_AMIGA_CIAA_TB, NULL);
-	free_irq(IRQ_AMIGA_DSKBLK, NULL);
-	custom.dmacon = DMAF_DISK; /* disable DMA */
-	amiga_chip_free(raw_buf);
-	unregister_blkdev(FLOPPY_MAJOR, "fd");
-}
-#endif
-
 static struct platform_driver amiga_floppy_driver = {
 	.driver   = {
 		.name	= "amiga-floppy",
diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h
index c0ebda1283cc..7ca76ed2e71a 100644
--- a/drivers/block/aoe/aoe.h
+++ b/drivers/block/aoe/aoe.h
@@ -1,4 +1,6 @@
 /* Copyright (c) 2013 Coraid, Inc.  See COPYING for GPL terms. */
+#include <linux/blk-mq.h>
+
 #define VERSION "85"
 #define AOE_MAJOR 152
 #define DEVICE_NAME "aoe"
@@ -164,6 +166,8 @@ struct aoedev {
 	struct gendisk *gd;
 	struct dentry *debugfs;
 	struct request_queue *blkq;
+	struct list_head rq_list;
+	struct blk_mq_tag_set tag_set;
 	struct hd_geometry geo;
 	sector_t ssize;
 	struct timer_list timer;
@@ -201,7 +205,6 @@ int aoeblk_init(void);
 void aoeblk_exit(void);
 void aoeblk_gdalloc(void *);
 void aoedisk_rm_debugfs(struct aoedev *d);
-void aoedisk_rm_sysfs(struct aoedev *d);
 
 int aoechr_init(void);
 void aoechr_exit(void);
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 429ebb84b592..ed26b7287256 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -6,7 +6,7 @@
 
 #include <linux/kernel.h>
 #include <linux/hdreg.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/backing-dev.h>
 #include <linux/fs.h>
 #include <linux/ioctl.h>
@@ -177,10 +177,15 @@ static struct attribute *aoe_attrs[] = {
 	NULL,
 };
 
-static const struct attribute_group attr_group = {
+static const struct attribute_group aoe_attr_group = {
 	.attrs = aoe_attrs,
 };
 
+static const struct attribute_group *aoe_attr_groups[] = {
+	&aoe_attr_group,
+	NULL,
+};
+
 static const struct file_operations aoe_debugfs_fops = {
 	.open = aoe_debugfs_open,
 	.read = seq_read,
@@ -220,17 +225,6 @@ aoedisk_rm_debugfs(struct aoedev *d)
 }
 
 static int
-aoedisk_add_sysfs(struct aoedev *d)
-{
-	return sysfs_create_group(&disk_to_dev(d->gd)->kobj, &attr_group);
-}
-void
-aoedisk_rm_sysfs(struct aoedev *d)
-{
-	sysfs_remove_group(&disk_to_dev(d->gd)->kobj, &attr_group);
-}
-
-static int
 aoeblk_open(struct block_device *bdev, fmode_t mode)
 {
 	struct aoedev *d = bdev->bd_disk->private_data;
@@ -274,23 +268,25 @@ aoeblk_release(struct gendisk *disk, fmode_t mode)
 	spin_unlock_irqrestore(&d->lock, flags);
 }
 
-static void
-aoeblk_request(struct request_queue *q)
+static blk_status_t aoeblk_queue_rq(struct blk_mq_hw_ctx *hctx,
+				    const struct blk_mq_queue_data *bd)
 {
-	struct aoedev *d;
-	struct request *rq;
+	struct aoedev *d = hctx->queue->queuedata;
+
+	spin_lock_irq(&d->lock);
 
-	d = q->queuedata;
 	if ((d->flags & DEVFL_UP) == 0) {
 		pr_info_ratelimited("aoe: device %ld.%d is not up\n",
 			d->aoemajor, d->aoeminor);
-		while ((rq = blk_peek_request(q))) {
-			blk_start_request(rq);
-			aoe_end_request(d, rq, 1);
-		}
-		return;
+		spin_unlock_irq(&d->lock);
+		blk_mq_start_request(bd->rq);
+		return BLK_STS_IOERR;
 	}
+
+	list_add_tail(&bd->rq->queuelist, &d->rq_list);
 	aoecmd_work(d);
+	spin_unlock_irq(&d->lock);
+	return BLK_STS_OK;
 }
 
 static int
@@ -345,6 +341,10 @@ static const struct block_device_operations aoe_bdops = {
 	.owner = THIS_MODULE,
 };
 
+static const struct blk_mq_ops aoeblk_mq_ops = {
+	.queue_rq	= aoeblk_queue_rq,
+};
+
 /* alloc_disk and add_disk can sleep */
 void
 aoeblk_gdalloc(void *vp)
@@ -353,9 +353,11 @@ aoeblk_gdalloc(void *vp)
 	struct gendisk *gd;
 	mempool_t *mp;
 	struct request_queue *q;
+	struct blk_mq_tag_set *set;
 	enum { KB = 1024, MB = KB * KB, READ_AHEAD = 2 * MB, };
 	ulong flags;
 	int late = 0;
+	int err;
 
 	spin_lock_irqsave(&d->lock, flags);
 	if (d->flags & DEVFL_GDALLOC
@@ -382,10 +384,25 @@ aoeblk_gdalloc(void *vp)
 			d->aoemajor, d->aoeminor);
 		goto err_disk;
 	}
-	q = blk_init_queue(aoeblk_request, &d->lock);
-	if (q == NULL) {
+
+	set = &d->tag_set;
+	set->ops = &aoeblk_mq_ops;
+	set->nr_hw_queues = 1;
+	set->queue_depth = 128;
+	set->numa_node = NUMA_NO_NODE;
+	set->flags = BLK_MQ_F_SHOULD_MERGE;
+	err = blk_mq_alloc_tag_set(set);
+	if (err) {
+		pr_err("aoe: cannot allocate tag set for %ld.%d\n",
+			d->aoemajor, d->aoeminor);
+		goto err_mempool;
+	}
+
+	q = blk_mq_init_queue(set);
+	if (IS_ERR(q)) {
 		pr_err("aoe: cannot allocate block queue for %ld.%d\n",
 			d->aoemajor, d->aoeminor);
+		blk_mq_free_tag_set(set);
 		goto err_mempool;
 	}
 
@@ -417,8 +434,7 @@ aoeblk_gdalloc(void *vp)
 
 	spin_unlock_irqrestore(&d->lock, flags);
 
-	add_disk(gd);
-	aoedisk_add_sysfs(d);
+	device_add_disk(NULL, gd, aoe_attr_groups);
 	aoedisk_add_debugfs(d);
 
 	spin_lock_irqsave(&d->lock, flags);
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 136dc507d020..bb2fba651bd2 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -7,7 +7,7 @@
 #include <linux/ata.h>
 #include <linux/slab.h>
 #include <linux/hdreg.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
 #include <linux/genhd.h>
@@ -813,7 +813,7 @@ rexmit_timer(struct timer_list *timer)
 out:
 	if ((d->flags & DEVFL_KICKME) && d->blkq) {
 		d->flags &= ~DEVFL_KICKME;
-		d->blkq->request_fn(d->blkq);
+		blk_mq_run_hw_queues(d->blkq, true);
 	}
 
 	d->timer.expires = jiffies + TIMERTICK;
@@ -857,10 +857,12 @@ nextbuf(struct aoedev *d)
 		return d->ip.buf;
 	rq = d->ip.rq;
 	if (rq == NULL) {
-		rq = blk_peek_request(q);
+		rq = list_first_entry_or_null(&d->rq_list, struct request,
+						queuelist);
 		if (rq == NULL)
 			return NULL;
-		blk_start_request(rq);
+		list_del_init(&rq->queuelist);
+		blk_mq_start_request(rq);
 		d->ip.rq = rq;
 		d->ip.nxbio = rq->bio;
 		rq->special = (void *) rqbiocnt(rq);
@@ -1045,6 +1047,7 @@ aoe_end_request(struct aoedev *d, struct request *rq, int fastfail)
 	struct bio *bio;
 	int bok;
 	struct request_queue *q;
+	blk_status_t err = BLK_STS_OK;
 
 	q = d->blkq;
 	if (rq == d->ip.rq)
@@ -1052,11 +1055,15 @@ aoe_end_request(struct aoedev *d, struct request *rq, int fastfail)
 	do {
 		bio = rq->bio;
 		bok = !fastfail && !bio->bi_status;
-	} while (__blk_end_request(rq, bok ? BLK_STS_OK : BLK_STS_IOERR, bio->bi_iter.bi_size));
+		if (!bok)
+			err = BLK_STS_IOERR;
+	} while (blk_update_request(rq, bok ? BLK_STS_OK : BLK_STS_IOERR, bio->bi_iter.bi_size));
+
+	__blk_mq_end_request(rq, err);
 
 	/* cf. http://lkml.org/lkml/2006/10/31/28 */
 	if (!fastfail)
-		__blk_run_queue(q);
+		blk_mq_run_hw_queues(q, true);
 }
 
 static void
diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c
index 41060e9cedf2..9063f8efbd3b 100644
--- a/drivers/block/aoe/aoedev.c
+++ b/drivers/block/aoe/aoedev.c
@@ -5,7 +5,7 @@
  */
 
 #include <linux/hdreg.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/netdevice.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
@@ -197,7 +197,6 @@ aoedev_downdev(struct aoedev *d)
 {
 	struct aoetgt *t, **tt, **te;
 	struct list_head *head, *pos, *nx;
-	struct request *rq;
 	int i;
 
 	d->flags &= ~DEVFL_UP;
@@ -225,10 +224,11 @@ aoedev_downdev(struct aoedev *d)
 
 	/* fast fail all pending I/O */
 	if (d->blkq) {
-		while ((rq = blk_peek_request(d->blkq))) {
-			blk_start_request(rq);
-			aoe_end_request(d, rq, 1);
-		}
+		/* UP is cleared, freeze+quiesce to insure all are errored */
+		blk_mq_freeze_queue(d->blkq);
+		blk_mq_quiesce_queue(d->blkq);
+		blk_mq_unquiesce_queue(d->blkq);
+		blk_mq_unfreeze_queue(d->blkq);
 	}
 
 	if (d->gd)
@@ -275,9 +275,9 @@ freedev(struct aoedev *d)
 	del_timer_sync(&d->timer);
 	if (d->gd) {
 		aoedisk_rm_debugfs(d);
-		aoedisk_rm_sysfs(d);
 		del_gendisk(d->gd);
 		put_disk(d->gd);
+		blk_mq_free_tag_set(&d->tag_set);
 		blk_cleanup_queue(d->blkq);
 	}
 	t = d->targets;
@@ -464,6 +464,7 @@ aoedev_by_aoeaddr(ulong maj, int min, int do_alloc)
 	d->ntargets = NTARGETS;
 	INIT_WORK(&d->work, aoecmd_sleepwork);
 	spin_lock_init(&d->lock);
+	INIT_LIST_HEAD(&d->rq_list);
 	skb_queue_head_init(&d->skbpool);
 	timer_setup(&d->timer, dummy_timer, 0);
 	d->timer.expires = jiffies + HZ;
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index dfb2c2622e5a..f88b4c26d422 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -66,13 +66,11 @@
 #include <linux/fd.h>
 #include <linux/delay.h>
 #include <linux/init.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/mutex.h>
 #include <linux/completion.h>
 #include <linux/wait.h>
 
-#include <asm/atafd.h>
-#include <asm/atafdreg.h>
 #include <asm/atariints.h>
 #include <asm/atari_stdma.h>
 #include <asm/atari_stram.h>
@@ -83,7 +81,87 @@
 
 static DEFINE_MUTEX(ataflop_mutex);
 static struct request *fd_request;
-static int fdc_queue;
+
+/*
+ * WD1772 stuff
+ */
+
+/* register codes */
+
+#define FDCSELREG_STP   (0x80)   /* command/status register */
+#define FDCSELREG_TRA   (0x82)   /* track register */
+#define FDCSELREG_SEC   (0x84)   /* sector register */
+#define FDCSELREG_DTA   (0x86)   /* data register */
+
+/* register names for FDC_READ/WRITE macros */
+
+#define FDCREG_CMD		0
+#define FDCREG_STATUS	0
+#define FDCREG_TRACK	2
+#define FDCREG_SECTOR	4
+#define FDCREG_DATA		6
+
+/* command opcodes */
+
+#define FDCCMD_RESTORE  (0x00)   /*  -                   */
+#define FDCCMD_SEEK     (0x10)   /*   |                  */
+#define FDCCMD_STEP     (0x20)   /*   |  TYP 1 Commands  */
+#define FDCCMD_STIN     (0x40)   /*   |                  */
+#define FDCCMD_STOT     (0x60)   /*  -                   */
+#define FDCCMD_RDSEC    (0x80)   /*  -   TYP 2 Commands  */
+#define FDCCMD_WRSEC    (0xa0)   /*  -          "        */
+#define FDCCMD_RDADR    (0xc0)   /*  -                   */
+#define FDCCMD_RDTRA    (0xe0)   /*   |  TYP 3 Commands  */
+#define FDCCMD_WRTRA    (0xf0)   /*  -                   */
+#define FDCCMD_FORCI    (0xd0)   /*  -   TYP 4 Command   */
+
+/* command modifier bits */
+
+#define FDCCMDADD_SR6   (0x00)   /* step rate settings */
+#define FDCCMDADD_SR12  (0x01)
+#define FDCCMDADD_SR2   (0x02)
+#define FDCCMDADD_SR3   (0x03)
+#define FDCCMDADD_V     (0x04)   /* verify */
+#define FDCCMDADD_H     (0x08)   /* wait for spin-up */
+#define FDCCMDADD_U     (0x10)   /* update track register */
+#define FDCCMDADD_M     (0x10)   /* multiple sector access */
+#define FDCCMDADD_E     (0x04)   /* head settling flag */
+#define FDCCMDADD_P     (0x02)   /* precompensation off */
+#define FDCCMDADD_A0    (0x01)   /* DAM flag */
+
+/* status register bits */
+
+#define	FDCSTAT_MOTORON	(0x80)   /* motor on */
+#define	FDCSTAT_WPROT	(0x40)   /* write protected (FDCCMD_WR*) */
+#define	FDCSTAT_SPINUP	(0x20)   /* motor speed stable (Type I) */
+#define	FDCSTAT_DELDAM	(0x20)   /* sector has deleted DAM (Type II+III) */
+#define	FDCSTAT_RECNF	(0x10)   /* record not found */
+#define	FDCSTAT_CRC		(0x08)   /* CRC error */
+#define	FDCSTAT_TR00	(0x04)   /* Track 00 flag (Type I) */
+#define	FDCSTAT_LOST	(0x04)   /* Lost Data (Type II+III) */
+#define	FDCSTAT_IDX		(0x02)   /* Index status (Type I) */
+#define	FDCSTAT_DRQ		(0x02)   /* DRQ status (Type II+III) */
+#define	FDCSTAT_BUSY	(0x01)   /* FDC is busy */
+
+
+/* PSG Port A Bit Nr 0 .. Side Sel .. 0 -> Side 1  1 -> Side 2 */
+#define DSKSIDE     (0x01)
+
+#define DSKDRVNONE  (0x06)
+#define DSKDRV0     (0x02)
+#define DSKDRV1     (0x04)
+
+/* step rates */
+#define	FDCSTEP_6	0x00
+#define	FDCSTEP_12	0x01
+#define	FDCSTEP_2	0x02
+#define	FDCSTEP_3	0x03
+
+struct atari_format_descr {
+	int track;		/* to be formatted */
+	int head;		/*   ""     ""     */
+	int sect_offset;	/* offset of first sector */
+};
 
 /* Disk types: DD, HD, ED */
 static struct atari_disk_type {
@@ -221,6 +299,7 @@ static struct atari_floppy_struct {
 	struct gendisk *disk;
 	int ref;
 	int type;
+	struct blk_mq_tag_set tag_set;
 } unit[FD_MAX_UNITS];
 
 #define	UD	unit[drive]
@@ -300,9 +379,6 @@ static int IsFormatting = 0, FormatError;
 static int UserSteprate[FD_MAX_UNITS] = { -1, -1 };
 module_param_array(UserSteprate, int, NULL, 0);
 
-/* Synchronization of FDC access. */
-static volatile int fdc_busy = 0;
-static DECLARE_WAIT_QUEUE_HEAD(fdc_wait);
 static DECLARE_COMPLETION(format_wait);
 
 static unsigned long changed_floppies = 0xff, fake_change = 0;
@@ -362,7 +438,6 @@ static void fd_times_out(struct timer_list *unused);
 static void finish_fdc( void );
 static void finish_fdc_done( int dummy );
 static void setup_req_params( int drive );
-static void redo_fd_request( void);
 static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
                      cmd, unsigned long param);
 static void fd_probe( int drive );
@@ -380,8 +455,11 @@ static DEFINE_TIMER(fd_timer, check_change);
 	
 static void fd_end_request_cur(blk_status_t err)
 {
-	if (!__blk_end_request_cur(fd_request, err))
+	if (!blk_update_request(fd_request, err,
+				blk_rq_cur_bytes(fd_request))) {
+		__blk_mq_end_request(fd_request, err);
 		fd_request = NULL;
+	}
 }
 
 static inline void start_motor_off_timer(void)
@@ -627,7 +705,6 @@ static void fd_error( void )
 		if (SelectedDrive != -1)
 			SUD.track = -1;
 	}
-	redo_fd_request();
 }
 
 
@@ -645,14 +722,15 @@ static void fd_error( void )
 
 static int do_format(int drive, int type, struct atari_format_descr *desc)
 {
+	struct request_queue *q = unit[drive].disk->queue;
 	unsigned char	*p;
 	int sect, nsect;
 	unsigned long	flags;
+	int ret;
 
-	DPRINT(("do_format( dr=%d tr=%d he=%d offs=%d )\n",
-		drive, desc->track, desc->head, desc->sect_offset ));
+	blk_mq_freeze_queue(q);
+	blk_mq_quiesce_queue(q);
 
-	wait_event(fdc_wait, cmpxchg(&fdc_busy, 0, 1) == 0);
 	local_irq_save(flags);
 	stdma_lock(floppy_irq, NULL);
 	atari_turnon_irq( IRQ_MFP_FDC ); /* should be already, just to be sure */
@@ -661,16 +739,16 @@ static int do_format(int drive, int type, struct atari_format_descr *desc)
 	if (type) {
 		if (--type >= NUM_DISK_MINORS ||
 		    minor2disktype[type].drive_types > DriveType) {
-			redo_fd_request();
-			return -EINVAL;
+			ret = -EINVAL;
+			goto out;
 		}
 		type = minor2disktype[type].index;
 		UDT = &atari_disk_type[type];
 	}
 
 	if (!UDT || desc->track >= UDT->blocks/UDT->spt/2 || desc->head >= 2) {
-		redo_fd_request();
-		return -EINVAL;
+		ret = -EINVAL;
+		goto out;
 	}
 
 	nsect = UDT->spt;
@@ -709,8 +787,11 @@ static int do_format(int drive, int type, struct atari_format_descr *desc)
 
 	wait_for_completion(&format_wait);
 
-	redo_fd_request();
-	return( FormatError ? -EIO : 0 );	
+	ret = FormatError ? -EIO : 0;
+out:
+	blk_mq_unquiesce_queue(q);
+	blk_mq_unfreeze_queue(q);
+	return ret;
 }
 
 
@@ -740,7 +821,6 @@ static void do_fd_action( int drive )
 		    else {
 			/* all sectors finished */
 			fd_end_request_cur(BLK_STS_OK);
-			redo_fd_request();
 			return;
 		    }
 		}
@@ -1145,7 +1225,6 @@ static void fd_rwsec_done1(int status)
 	else {
 		/* all sectors finished */
 		fd_end_request_cur(BLK_STS_OK);
-		redo_fd_request();
 	}
 	return;
   
@@ -1303,8 +1382,6 @@ static void finish_fdc_done( int dummy )
 
 	local_irq_save(flags);
 	stdma_release();
-	fdc_busy = 0;
-	wake_up( &fdc_wait );
 	local_irq_restore(flags);
 
 	DPRINT(("finish_fdc() finished\n"));
@@ -1394,59 +1471,34 @@ static void setup_req_params( int drive )
 			ReqTrack, ReqSector, (unsigned long)ReqData ));
 }
 
-/*
- * Round-robin between our available drives, doing one request from each
- */
-static struct request *set_next_request(void)
+static blk_status_t ataflop_queue_rq(struct blk_mq_hw_ctx *hctx,
+				     const struct blk_mq_queue_data *bd)
 {
-	struct request_queue *q;
-	int old_pos = fdc_queue;
-	struct request *rq = NULL;
-
-	do {
-		q = unit[fdc_queue].disk->queue;
-		if (++fdc_queue == FD_MAX_UNITS)
-			fdc_queue = 0;
-		if (q) {
-			rq = blk_fetch_request(q);
-			if (rq) {
-				rq->error_count = 0;
-				break;
-			}
-		}
-	} while (fdc_queue != old_pos);
-
-	return rq;
-}
-
+	struct atari_floppy_struct *floppy = bd->rq->rq_disk->private_data;
+	int drive = floppy - unit;
+	int type = floppy->type;
 
-static void redo_fd_request(void)
-{
-	int drive, type;
-	struct atari_floppy_struct *floppy;
+	spin_lock_irq(&ataflop_lock);
+	if (fd_request) {
+		spin_unlock_irq(&ataflop_lock);
+		return BLK_STS_DEV_RESOURCE;
+	}
+	if (!stdma_try_lock(floppy_irq, NULL))  {
+		spin_unlock_irq(&ataflop_lock);
+		return BLK_STS_RESOURCE;
+	}
+	fd_request = bd->rq;
+	blk_mq_start_request(fd_request);
 
-	DPRINT(("redo_fd_request: fd_request=%p dev=%s fd_request->sector=%ld\n",
-		fd_request, fd_request ? fd_request->rq_disk->disk_name : "",
-		fd_request ? blk_rq_pos(fd_request) : 0 ));
+	atari_disable_irq( IRQ_MFP_FDC );
 
 	IsFormatting = 0;
 
-repeat:
-	if (!fd_request) {
-		fd_request = set_next_request();
-		if (!fd_request)
-			goto the_end;
-	}
-
-	floppy = fd_request->rq_disk->private_data;
-	drive = floppy - unit;
-	type = floppy->type;
-	
 	if (!UD.connected) {
 		/* drive not connected */
 		printk(KERN_ERR "Unknown Device: fd%d\n", drive );
 		fd_end_request_cur(BLK_STS_IOERR);
-		goto repeat;
+		goto out;
 	}
 		
 	if (type == 0) {
@@ -1462,23 +1514,18 @@ repeat:
 		if (--type >= NUM_DISK_MINORS) {
 			printk(KERN_WARNING "fd%d: invalid disk format", drive );
 			fd_end_request_cur(BLK_STS_IOERR);
-			goto repeat;
+			goto out;
 		}
 		if (minor2disktype[type].drive_types > DriveType)  {
 			printk(KERN_WARNING "fd%d: unsupported disk format", drive );
 			fd_end_request_cur(BLK_STS_IOERR);
-			goto repeat;
+			goto out;
 		}
 		type = minor2disktype[type].index;
 		UDT = &atari_disk_type[type];
 		set_capacity(floppy->disk, UDT->blocks);
 		UD.autoprobe = 0;
 	}
-	
-	if (blk_rq_pos(fd_request) + 1 > UDT->blocks) {
-		fd_end_request_cur(BLK_STS_IOERR);
-		goto repeat;
-	}
 
 	/* stop deselect timer */
 	del_timer( &motor_off_timer );
@@ -1490,22 +1537,13 @@ repeat:
 	setup_req_params( drive );
 	do_fd_action( drive );
 
-	return;
-
-  the_end:
-	finish_fdc();
-}
-
-
-void do_fd_request(struct request_queue * q)
-{
-	DPRINT(("do_fd_request for pid %d\n",current->pid));
-	wait_event(fdc_wait, cmpxchg(&fdc_busy, 0, 1) == 0);
-	stdma_lock(floppy_irq, NULL);
-
-	atari_disable_irq( IRQ_MFP_FDC );
-	redo_fd_request();
+	if (bd->last)
+		finish_fdc();
 	atari_enable_irq( IRQ_MFP_FDC );
+
+out:
+	spin_unlock_irq(&ataflop_lock);
+	return BLK_STS_OK;
 }
 
 static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode,
@@ -1583,7 +1621,6 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode,
 		/* what if type > 0 here? Overwrite specified entry ? */
 		if (type) {
 		        /* refuse to re-set a predefined type for now */
-			redo_fd_request();
 			return -EINVAL;
 		}
 
@@ -1651,10 +1688,8 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode,
 
 		/* sanity check */
 		if (setprm.track != dtp->blocks/dtp->spt/2 ||
-		    setprm.head != 2) {
-			redo_fd_request();
+		    setprm.head != 2)
 			return -EINVAL;
-		}
 
 		UDT = dtp;
 		set_capacity(floppy->disk, UDT->blocks);
@@ -1910,6 +1945,10 @@ static const struct block_device_operations floppy_fops = {
 	.revalidate_disk= floppy_revalidate,
 };
 
+static const struct blk_mq_ops ataflop_mq_ops = {
+	.queue_rq = ataflop_queue_rq,
+};
+
 static struct kobject *floppy_find(dev_t dev, int *part, void *data)
 {
 	int drive = *part & 3;
@@ -1923,6 +1962,7 @@ static struct kobject *floppy_find(dev_t dev, int *part, void *data)
 static int __init atari_floppy_init (void)
 {
 	int i;
+	int ret;
 
 	if (!MACH_IS_ATARI)
 		/* Amiga, Mac, ... don't have Atari-compatible floppy :-) */
@@ -1933,8 +1973,19 @@ static int __init atari_floppy_init (void)
 
 	for (i = 0; i < FD_MAX_UNITS; i++) {
 		unit[i].disk = alloc_disk(1);
-		if (!unit[i].disk)
-			goto Enomem;
+		if (!unit[i].disk) {
+			ret = -ENOMEM;
+			goto err;
+		}
+
+		unit[i].disk->queue = blk_mq_init_sq_queue(&unit[i].tag_set,
+							   &ataflop_mq_ops, 2,
+							   BLK_MQ_F_SHOULD_MERGE);
+		if (IS_ERR(unit[i].disk->queue)) {
+			ret = PTR_ERR(unit[i].disk->queue);
+			unit[i].disk->queue = NULL;
+			goto err;
+		}
 	}
 
 	if (UseTrackbuffer < 0)
@@ -1951,7 +2002,8 @@ static int __init atari_floppy_init (void)
 	DMABuffer = atari_stram_alloc(BUFFER_SIZE+512, "ataflop");
 	if (!DMABuffer) {
 		printk(KERN_ERR "atari_floppy_init: cannot get dma buffer\n");
-		goto Enomem;
+		ret = -ENOMEM;
+		goto err;
 	}
 	TrackBuffer = DMABuffer + 512;
 	PhysDMABuffer = atari_stram_to_phys(DMABuffer);
@@ -1966,10 +2018,6 @@ static int __init atari_floppy_init (void)
 		sprintf(unit[i].disk->disk_name, "fd%d", i);
 		unit[i].disk->fops = &floppy_fops;
 		unit[i].disk->private_data = &unit[i];
-		unit[i].disk->queue = blk_init_queue(do_fd_request,
-					&ataflop_lock);
-		if (!unit[i].disk->queue)
-			goto Enomem;
 		set_capacity(unit[i].disk, MAX_DISK_SIZE * 2);
 		add_disk(unit[i].disk);
 	}
@@ -1983,17 +2031,23 @@ static int __init atari_floppy_init (void)
 	config_types();
 
 	return 0;
-Enomem:
-	while (i--) {
-		struct request_queue *q = unit[i].disk->queue;
 
-		put_disk(unit[i].disk);
-		if (q)
-			blk_cleanup_queue(q);
-	}
+err:
+	do {
+		struct gendisk *disk = unit[i].disk;
+
+		if (disk) {
+			if (disk->queue) {
+				blk_cleanup_queue(disk->queue);
+				disk->queue = NULL;
+			}
+			blk_mq_free_tag_set(&unit[i].tag_set);
+			put_disk(unit[i].disk);
+		}
+	} while (i--);
 
 	unregister_blkdev(FLOPPY_MAJOR, "fd");
-	return -ENOMEM;
+	return ret;
 }
 
 #ifndef MODULE
@@ -2040,11 +2094,10 @@ static void __exit atari_floppy_exit(void)
 	int i;
 	blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
 	for (i = 0; i < FD_MAX_UNITS; i++) {
-		struct request_queue *q = unit[i].disk->queue;
-
 		del_gendisk(unit[i].disk);
+		blk_cleanup_queue(unit[i].disk->queue);
+		blk_mq_free_tag_set(&unit[i].tag_set);
 		put_disk(unit[i].disk);
-		blk_cleanup_queue(q);
 	}
 	unregister_blkdev(FLOPPY_MAJOR, "fd");
 
diff --git a/drivers/block/drbd/Kconfig b/drivers/block/drbd/Kconfig
index 87aab6910d2d..52d885cdccb5 100644
--- a/drivers/block/drbd/Kconfig
+++ b/drivers/block/drbd/Kconfig
@@ -11,7 +11,6 @@ config BLK_DEV_DRBD
 	depends on PROC_FS && INET
 	select LRU_CACHE
 	select LIBCRC32C
-	default n
 	help
 
 	  NOTE: In order to authenticate connections you have to select
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index e35a234b0a8f..1e47db57b9d2 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -429,7 +429,7 @@ enum {
 	__EE_CALL_AL_COMPLETE_IO,
 	__EE_MAY_SET_IN_SYNC,
 
-	/* is this a TRIM aka REQ_DISCARD? */
+	/* is this a TRIM aka REQ_OP_DISCARD? */
 	__EE_IS_TRIM,
 
 	/* In case a barrier failed,
@@ -724,10 +724,10 @@ struct drbd_connection {
 	struct list_head transfer_log;	/* all requests not yet fully processed */
 
 	struct crypto_shash *cram_hmac_tfm;
-	struct crypto_ahash *integrity_tfm;  /* checksums we compute, updates protected by connection->data->mutex */
-	struct crypto_ahash *peer_integrity_tfm;  /* checksums we verify, only accessed from receiver thread  */
-	struct crypto_ahash *csums_tfm;
-	struct crypto_ahash *verify_tfm;
+	struct crypto_shash *integrity_tfm;  /* checksums we compute, updates protected by connection->data->mutex */
+	struct crypto_shash *peer_integrity_tfm;  /* checksums we verify, only accessed from receiver thread  */
+	struct crypto_shash *csums_tfm;
+	struct crypto_shash *verify_tfm;
 	void *int_dig_in;
 	void *int_dig_vv;
 
@@ -1531,8 +1531,9 @@ static inline void ov_out_of_sync_print(struct drbd_device *device)
 }
 
 
-extern void drbd_csum_bio(struct crypto_ahash *, struct bio *, void *);
-extern void drbd_csum_ee(struct crypto_ahash *, struct drbd_peer_request *, void *);
+extern void drbd_csum_bio(struct crypto_shash *, struct bio *, void *);
+extern void drbd_csum_ee(struct crypto_shash *, struct drbd_peer_request *,
+			 void *);
 /* worker callbacks */
 extern int w_e_end_data_req(struct drbd_work *, int);
 extern int w_e_end_rsdata_req(struct drbd_work *, int);
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index ef8212a4b73e..55fd104f1ed4 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1377,7 +1377,7 @@ void drbd_send_ack_dp(struct drbd_peer_device *peer_device, enum drbd_packet cmd
 		      struct p_data *dp, int data_size)
 {
 	if (peer_device->connection->peer_integrity_tfm)
-		data_size -= crypto_ahash_digestsize(peer_device->connection->peer_integrity_tfm);
+		data_size -= crypto_shash_digestsize(peer_device->connection->peer_integrity_tfm);
 	_drbd_send_ack(peer_device, cmd, dp->sector, cpu_to_be32(data_size),
 		       dp->block_id);
 }
@@ -1673,7 +1673,7 @@ static u32 bio_flags_to_wire(struct drbd_connection *connection,
 		return bio->bi_opf & REQ_SYNC ? DP_RW_SYNC : 0;
 }
 
-/* Used to send write or TRIM aka REQ_DISCARD requests
+/* Used to send write or TRIM aka REQ_OP_DISCARD requests
  * R_PRIMARY -> Peer	(P_DATA, P_TRIM)
  */
 int drbd_send_dblock(struct drbd_peer_device *peer_device, struct drbd_request *req)
@@ -1690,7 +1690,7 @@ int drbd_send_dblock(struct drbd_peer_device *peer_device, struct drbd_request *
 	sock = &peer_device->connection->data;
 	p = drbd_prepare_command(peer_device, sock);
 	digest_size = peer_device->connection->integrity_tfm ?
-		      crypto_ahash_digestsize(peer_device->connection->integrity_tfm) : 0;
+		      crypto_shash_digestsize(peer_device->connection->integrity_tfm) : 0;
 
 	if (!p)
 		return -EIO;
@@ -1796,7 +1796,7 @@ int drbd_send_block(struct drbd_peer_device *peer_device, enum drbd_packet cmd,
 	p = drbd_prepare_command(peer_device, sock);
 
 	digest_size = peer_device->connection->integrity_tfm ?
-		      crypto_ahash_digestsize(peer_device->connection->integrity_tfm) : 0;
+		      crypto_shash_digestsize(peer_device->connection->integrity_tfm) : 0;
 
 	if (!p)
 		return -EIO;
@@ -2557,11 +2557,11 @@ void conn_free_crypto(struct drbd_connection *connection)
 {
 	drbd_free_sock(connection);
 
-	crypto_free_ahash(connection->csums_tfm);
-	crypto_free_ahash(connection->verify_tfm);
+	crypto_free_shash(connection->csums_tfm);
+	crypto_free_shash(connection->verify_tfm);
 	crypto_free_shash(connection->cram_hmac_tfm);
-	crypto_free_ahash(connection->integrity_tfm);
-	crypto_free_ahash(connection->peer_integrity_tfm);
+	crypto_free_shash(connection->integrity_tfm);
+	crypto_free_shash(connection->peer_integrity_tfm);
 	kfree(connection->int_dig_in);
 	kfree(connection->int_dig_vv);
 
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index b4f02768ba47..d15703b1ffe8 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -2303,10 +2303,10 @@ check_net_options(struct drbd_connection *connection, struct net_conf *new_net_c
 }
 
 struct crypto {
-	struct crypto_ahash *verify_tfm;
-	struct crypto_ahash *csums_tfm;
+	struct crypto_shash *verify_tfm;
+	struct crypto_shash *csums_tfm;
 	struct crypto_shash *cram_hmac_tfm;
-	struct crypto_ahash *integrity_tfm;
+	struct crypto_shash *integrity_tfm;
 };
 
 static int
@@ -2324,36 +2324,21 @@ alloc_shash(struct crypto_shash **tfm, char *tfm_name, int err_alg)
 	return NO_ERROR;
 }
 
-static int
-alloc_ahash(struct crypto_ahash **tfm, char *tfm_name, int err_alg)
-{
-	if (!tfm_name[0])
-		return NO_ERROR;
-
-	*tfm = crypto_alloc_ahash(tfm_name, 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(*tfm)) {
-		*tfm = NULL;
-		return err_alg;
-	}
-
-	return NO_ERROR;
-}
-
 static enum drbd_ret_code
 alloc_crypto(struct crypto *crypto, struct net_conf *new_net_conf)
 {
 	char hmac_name[CRYPTO_MAX_ALG_NAME];
 	enum drbd_ret_code rv;
 
-	rv = alloc_ahash(&crypto->csums_tfm, new_net_conf->csums_alg,
+	rv = alloc_shash(&crypto->csums_tfm, new_net_conf->csums_alg,
 			 ERR_CSUMS_ALG);
 	if (rv != NO_ERROR)
 		return rv;
-	rv = alloc_ahash(&crypto->verify_tfm, new_net_conf->verify_alg,
+	rv = alloc_shash(&crypto->verify_tfm, new_net_conf->verify_alg,
 			 ERR_VERIFY_ALG);
 	if (rv != NO_ERROR)
 		return rv;
-	rv = alloc_ahash(&crypto->integrity_tfm, new_net_conf->integrity_alg,
+	rv = alloc_shash(&crypto->integrity_tfm, new_net_conf->integrity_alg,
 			 ERR_INTEGRITY_ALG);
 	if (rv != NO_ERROR)
 		return rv;
@@ -2371,9 +2356,9 @@ alloc_crypto(struct crypto *crypto, struct net_conf *new_net_conf)
 static void free_crypto(struct crypto *crypto)
 {
 	crypto_free_shash(crypto->cram_hmac_tfm);
-	crypto_free_ahash(crypto->integrity_tfm);
-	crypto_free_ahash(crypto->csums_tfm);
-	crypto_free_ahash(crypto->verify_tfm);
+	crypto_free_shash(crypto->integrity_tfm);
+	crypto_free_shash(crypto->csums_tfm);
+	crypto_free_shash(crypto->verify_tfm);
 }
 
 int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
@@ -2450,17 +2435,17 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
 	rcu_assign_pointer(connection->net_conf, new_net_conf);
 
 	if (!rsr) {
-		crypto_free_ahash(connection->csums_tfm);
+		crypto_free_shash(connection->csums_tfm);
 		connection->csums_tfm = crypto.csums_tfm;
 		crypto.csums_tfm = NULL;
 	}
 	if (!ovr) {
-		crypto_free_ahash(connection->verify_tfm);
+		crypto_free_shash(connection->verify_tfm);
 		connection->verify_tfm = crypto.verify_tfm;
 		crypto.verify_tfm = NULL;
 	}
 
-	crypto_free_ahash(connection->integrity_tfm);
+	crypto_free_shash(connection->integrity_tfm);
 	connection->integrity_tfm = crypto.integrity_tfm;
 	if (connection->cstate >= C_WF_REPORT_PARAMS && connection->agreed_pro_version >= 100)
 		/* Do this without trying to take connection->data.mutex again.  */
diff --git a/drivers/block/drbd/drbd_protocol.h b/drivers/block/drbd/drbd_protocol.h
index c3081f93051c..48dabbb21e11 100644
--- a/drivers/block/drbd/drbd_protocol.h
+++ b/drivers/block/drbd/drbd_protocol.h
@@ -57,7 +57,7 @@ enum drbd_packet {
 	P_PROTOCOL_UPDATE     = 0x2d, /* data sock: is used in established connections */
         /* 0x2e to 0x30 reserved, used in drbd 9 */
 
-	/* REQ_DISCARD. We used "discard" in different contexts before,
+	/* REQ_OP_DISCARD. We used "discard" in different contexts before,
 	 * which is why I chose TRIM here, to disambiguate. */
 	P_TRIM                = 0x31,
 
@@ -126,7 +126,7 @@ struct p_header100 {
 #define DP_UNPLUG             8 /* not used anymore   */
 #define DP_FUA               16 /* equals REQ_FUA     */
 #define DP_FLUSH             32 /* equals REQ_PREFLUSH   */
-#define DP_DISCARD           64 /* equals REQ_DISCARD */
+#define DP_DISCARD           64 /* equals REQ_OP_DISCARD */
 #define DP_SEND_RECEIVE_ACK 128 /* This is a proto B write request */
 #define DP_SEND_WRITE_ACK   256 /* This is a proto C write request */
 #define DP_WSAME            512 /* equiv. REQ_WRITE_SAME */
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 75f6b47169e6..fc67fd853375 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1732,7 +1732,7 @@ static int receive_Barrier(struct drbd_connection *connection, struct packet_inf
 }
 
 /* quick wrapper in case payload size != request_size (write same) */
-static void drbd_csum_ee_size(struct crypto_ahash *h,
+static void drbd_csum_ee_size(struct crypto_shash *h,
 			      struct drbd_peer_request *r, void *d,
 			      unsigned int payload_size)
 {
@@ -1769,7 +1769,7 @@ read_in_block(struct drbd_peer_device *peer_device, u64 id, sector_t sector,
 
 	digest_size = 0;
 	if (!trim && peer_device->connection->peer_integrity_tfm) {
-		digest_size = crypto_ahash_digestsize(peer_device->connection->peer_integrity_tfm);
+		digest_size = crypto_shash_digestsize(peer_device->connection->peer_integrity_tfm);
 		/*
 		 * FIXME: Receive the incoming digest into the receive buffer
 		 *	  here, together with its struct p_data?
@@ -1905,7 +1905,7 @@ static int recv_dless_read(struct drbd_peer_device *peer_device, struct drbd_req
 
 	digest_size = 0;
 	if (peer_device->connection->peer_integrity_tfm) {
-		digest_size = crypto_ahash_digestsize(peer_device->connection->peer_integrity_tfm);
+		digest_size = crypto_shash_digestsize(peer_device->connection->peer_integrity_tfm);
 		err = drbd_recv_all_warn(peer_device->connection, dig_in, digest_size);
 		if (err)
 			return err;
@@ -3542,7 +3542,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
 	int p_proto, p_discard_my_data, p_two_primaries, cf;
 	struct net_conf *nc, *old_net_conf, *new_net_conf = NULL;
 	char integrity_alg[SHARED_SECRET_MAX] = "";
-	struct crypto_ahash *peer_integrity_tfm = NULL;
+	struct crypto_shash *peer_integrity_tfm = NULL;
 	void *int_dig_in = NULL, *int_dig_vv = NULL;
 
 	p_proto		= be32_to_cpu(p->protocol);
@@ -3623,7 +3623,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
 		 * change.
 		 */
 
-		peer_integrity_tfm = crypto_alloc_ahash(integrity_alg, 0, CRYPTO_ALG_ASYNC);
+		peer_integrity_tfm = crypto_alloc_shash(integrity_alg, 0, CRYPTO_ALG_ASYNC);
 		if (IS_ERR(peer_integrity_tfm)) {
 			peer_integrity_tfm = NULL;
 			drbd_err(connection, "peer data-integrity-alg %s not supported\n",
@@ -3631,7 +3631,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
 			goto disconnect;
 		}
 
-		hash_size = crypto_ahash_digestsize(peer_integrity_tfm);
+		hash_size = crypto_shash_digestsize(peer_integrity_tfm);
 		int_dig_in = kmalloc(hash_size, GFP_KERNEL);
 		int_dig_vv = kmalloc(hash_size, GFP_KERNEL);
 		if (!(int_dig_in && int_dig_vv)) {
@@ -3661,7 +3661,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
 	mutex_unlock(&connection->resource->conf_update);
 	mutex_unlock(&connection->data.mutex);
 
-	crypto_free_ahash(connection->peer_integrity_tfm);
+	crypto_free_shash(connection->peer_integrity_tfm);
 	kfree(connection->int_dig_in);
 	kfree(connection->int_dig_vv);
 	connection->peer_integrity_tfm = peer_integrity_tfm;
@@ -3679,7 +3679,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
 disconnect_rcu_unlock:
 	rcu_read_unlock();
 disconnect:
-	crypto_free_ahash(peer_integrity_tfm);
+	crypto_free_shash(peer_integrity_tfm);
 	kfree(int_dig_in);
 	kfree(int_dig_vv);
 	conn_request_state(connection, NS(conn, C_DISCONNECTING), CS_HARD);
@@ -3691,15 +3691,16 @@ disconnect:
  * return: NULL (alg name was "")
  *         ERR_PTR(error) if something goes wrong
  *         or the crypto hash ptr, if it worked out ok. */
-static struct crypto_ahash *drbd_crypto_alloc_digest_safe(const struct drbd_device *device,
+static struct crypto_shash *drbd_crypto_alloc_digest_safe(
+		const struct drbd_device *device,
 		const char *alg, const char *name)
 {
-	struct crypto_ahash *tfm;
+	struct crypto_shash *tfm;
 
 	if (!alg[0])
 		return NULL;
 
-	tfm = crypto_alloc_ahash(alg, 0, CRYPTO_ALG_ASYNC);
+	tfm = crypto_alloc_shash(alg, 0, 0);
 	if (IS_ERR(tfm)) {
 		drbd_err(device, "Can not allocate \"%s\" as %s (reason: %ld)\n",
 			alg, name, PTR_ERR(tfm));
@@ -3752,8 +3753,8 @@ static int receive_SyncParam(struct drbd_connection *connection, struct packet_i
 	struct drbd_device *device;
 	struct p_rs_param_95 *p;
 	unsigned int header_size, data_size, exp_max_sz;
-	struct crypto_ahash *verify_tfm = NULL;
-	struct crypto_ahash *csums_tfm = NULL;
+	struct crypto_shash *verify_tfm = NULL;
+	struct crypto_shash *csums_tfm = NULL;
 	struct net_conf *old_net_conf, *new_net_conf = NULL;
 	struct disk_conf *old_disk_conf = NULL, *new_disk_conf = NULL;
 	const int apv = connection->agreed_pro_version;
@@ -3900,14 +3901,14 @@ static int receive_SyncParam(struct drbd_connection *connection, struct packet_i
 			if (verify_tfm) {
 				strcpy(new_net_conf->verify_alg, p->verify_alg);
 				new_net_conf->verify_alg_len = strlen(p->verify_alg) + 1;
-				crypto_free_ahash(peer_device->connection->verify_tfm);
+				crypto_free_shash(peer_device->connection->verify_tfm);
 				peer_device->connection->verify_tfm = verify_tfm;
 				drbd_info(device, "using verify-alg: \"%s\"\n", p->verify_alg);
 			}
 			if (csums_tfm) {
 				strcpy(new_net_conf->csums_alg, p->csums_alg);
 				new_net_conf->csums_alg_len = strlen(p->csums_alg) + 1;
-				crypto_free_ahash(peer_device->connection->csums_tfm);
+				crypto_free_shash(peer_device->connection->csums_tfm);
 				peer_device->connection->csums_tfm = csums_tfm;
 				drbd_info(device, "using csums-alg: \"%s\"\n", p->csums_alg);
 			}
@@ -3951,9 +3952,9 @@ disconnect:
 	mutex_unlock(&connection->resource->conf_update);
 	/* just for completeness: actually not needed,
 	 * as this is not reached if csums_tfm was ok. */
-	crypto_free_ahash(csums_tfm);
+	crypto_free_shash(csums_tfm);
 	/* but free the verify_tfm again, if csums_tfm did not work out */
-	crypto_free_ahash(verify_tfm);
+	crypto_free_shash(verify_tfm);
 	conn_request_state(peer_device->connection, NS(conn, C_DISCONNECTING), CS_HARD);
 	return -EIO;
 }
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 19cac36e9737..1c4da17e902e 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -650,7 +650,7 @@ int __req_mod(struct drbd_request *req, enum drbd_req_event what,
 	case DISCARD_COMPLETED_NOTSUPP:
 	case DISCARD_COMPLETED_WITH_ERROR:
 		/* I'd rather not detach from local disk just because it
-		 * failed a REQ_DISCARD. */
+		 * failed a REQ_OP_DISCARD. */
 		mod_rq_state(req, m, RQ_LOCAL_PENDING, RQ_LOCAL_COMPLETED);
 		break;
 
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index b8f77e83d456..99255d0c9e2f 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -152,7 +152,7 @@ void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __releases(l
 
 	do_wake = list_empty(block_id == ID_SYNCER ? &device->sync_ee : &device->active_ee);
 
-	/* FIXME do we want to detach for failed REQ_DISCARD?
+	/* FIXME do we want to detach for failed REQ_OP_DISCARD?
 	 * ((peer_req->flags & (EE_WAS_ERROR|EE_IS_TRIM)) == EE_WAS_ERROR) */
 	if (peer_req->flags & EE_WAS_ERROR)
 		__drbd_chk_io_error(device, DRBD_WRITE_ERROR);
@@ -295,60 +295,61 @@ void drbd_request_endio(struct bio *bio)
 		complete_master_bio(device, &m);
 }
 
-void drbd_csum_ee(struct crypto_ahash *tfm, struct drbd_peer_request *peer_req, void *digest)
+void drbd_csum_ee(struct crypto_shash *tfm, struct drbd_peer_request *peer_req, void *digest)
 {
-	AHASH_REQUEST_ON_STACK(req, tfm);
-	struct scatterlist sg;
+	SHASH_DESC_ON_STACK(desc, tfm);
 	struct page *page = peer_req->pages;
 	struct page *tmp;
 	unsigned len;
+	void *src;
 
-	ahash_request_set_tfm(req, tfm);
-	ahash_request_set_callback(req, 0, NULL, NULL);
+	desc->tfm = tfm;
+	desc->flags = 0;
 
-	sg_init_table(&sg, 1);
-	crypto_ahash_init(req);
+	crypto_shash_init(desc);
 
+	src = kmap_atomic(page);
 	while ((tmp = page_chain_next(page))) {
 		/* all but the last page will be fully used */
-		sg_set_page(&sg, page, PAGE_SIZE, 0);
-		ahash_request_set_crypt(req, &sg, NULL, sg.length);
-		crypto_ahash_update(req);
+		crypto_shash_update(desc, src, PAGE_SIZE);
+		kunmap_atomic(src);
 		page = tmp;
+		src = kmap_atomic(page);
 	}
 	/* and now the last, possibly only partially used page */
 	len = peer_req->i.size & (PAGE_SIZE - 1);
-	sg_set_page(&sg, page, len ?: PAGE_SIZE, 0);
-	ahash_request_set_crypt(req, &sg, digest, sg.length);
-	crypto_ahash_finup(req);
-	ahash_request_zero(req);
+	crypto_shash_update(desc, src, len ?: PAGE_SIZE);
+	kunmap_atomic(src);
+
+	crypto_shash_final(desc, digest);
+	shash_desc_zero(desc);
 }
 
-void drbd_csum_bio(struct crypto_ahash *tfm, struct bio *bio, void *digest)
+void drbd_csum_bio(struct crypto_shash *tfm, struct bio *bio, void *digest)
 {
-	AHASH_REQUEST_ON_STACK(req, tfm);
-	struct scatterlist sg;
+	SHASH_DESC_ON_STACK(desc, tfm);
 	struct bio_vec bvec;
 	struct bvec_iter iter;
 
-	ahash_request_set_tfm(req, tfm);
-	ahash_request_set_callback(req, 0, NULL, NULL);
+	desc->tfm = tfm;
+	desc->flags = 0;
 
-	sg_init_table(&sg, 1);
-	crypto_ahash_init(req);
+	crypto_shash_init(desc);
 
 	bio_for_each_segment(bvec, bio, iter) {
-		sg_set_page(&sg, bvec.bv_page, bvec.bv_len, bvec.bv_offset);
-		ahash_request_set_crypt(req, &sg, NULL, sg.length);
-		crypto_ahash_update(req);
+		u8 *src;
+
+		src = kmap_atomic(bvec.bv_page);
+		crypto_shash_update(desc, src + bvec.bv_offset, bvec.bv_len);
+		kunmap_atomic(src);
+
 		/* REQ_OP_WRITE_SAME has only one segment,
 		 * checksum the payload only once. */
 		if (bio_op(bio) == REQ_OP_WRITE_SAME)
 			break;
 	}
-	ahash_request_set_crypt(req, NULL, digest, 0);
-	crypto_ahash_final(req);
-	ahash_request_zero(req);
+	crypto_shash_final(desc, digest);
+	shash_desc_zero(desc);
 }
 
 /* MAYBE merge common code with w_e_end_ov_req */
@@ -367,7 +368,7 @@ static int w_e_send_csum(struct drbd_work *w, int cancel)
 	if (unlikely((peer_req->flags & EE_WAS_ERROR) != 0))
 		goto out;
 
-	digest_size = crypto_ahash_digestsize(peer_device->connection->csums_tfm);
+	digest_size = crypto_shash_digestsize(peer_device->connection->csums_tfm);
 	digest = kmalloc(digest_size, GFP_NOIO);
 	if (digest) {
 		sector_t sector = peer_req->i.sector;
@@ -1205,7 +1206,7 @@ int w_e_end_csum_rs_req(struct drbd_work *w, int cancel)
 		 * a real fix would be much more involved,
 		 * introducing more locking mechanisms */
 		if (peer_device->connection->csums_tfm) {
-			digest_size = crypto_ahash_digestsize(peer_device->connection->csums_tfm);
+			digest_size = crypto_shash_digestsize(peer_device->connection->csums_tfm);
 			D_ASSERT(device, digest_size == di->digest_size);
 			digest = kmalloc(digest_size, GFP_NOIO);
 		}
@@ -1255,7 +1256,7 @@ int w_e_end_ov_req(struct drbd_work *w, int cancel)
 	if (unlikely(cancel))
 		goto out;
 
-	digest_size = crypto_ahash_digestsize(peer_device->connection->verify_tfm);
+	digest_size = crypto_shash_digestsize(peer_device->connection->verify_tfm);
 	digest = kmalloc(digest_size, GFP_NOIO);
 	if (!digest) {
 		err = 1;	/* terminate the connection in case the allocation failed */
@@ -1327,7 +1328,7 @@ int w_e_end_ov_reply(struct drbd_work *w, int cancel)
 	di = peer_req->digest;
 
 	if (likely((peer_req->flags & EE_WAS_ERROR) == 0)) {
-		digest_size = crypto_ahash_digestsize(peer_device->connection->verify_tfm);
+		digest_size = crypto_shash_digestsize(peer_device->connection->verify_tfm);
 		digest = kmalloc(digest_size, GFP_NOIO);
 		if (digest) {
 			drbd_csum_ee(peer_device->connection->verify_tfm, peer_req, digest);
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index f2b6f4da1034..a8cfa011c284 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -252,13 +252,13 @@ static int allowed_drive_mask = 0x33;
 
 static int irqdma_allocated;
 
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/blkpg.h>
 #include <linux/cdrom.h>	/* for the compatibility eject ioctl */
 #include <linux/completion.h>
 
+static LIST_HEAD(floppy_reqs);
 static struct request *current_req;
-static void do_fd_request(struct request_queue *q);
 static int set_next_request(void);
 
 #ifndef fd_get_dma_residue
@@ -414,10 +414,10 @@ static struct floppy_drive_struct drive_state[N_DRIVE];
 static struct floppy_write_errors write_errors[N_DRIVE];
 static struct timer_list motor_off_timer[N_DRIVE];
 static struct gendisk *disks[N_DRIVE];
+static struct blk_mq_tag_set tag_sets[N_DRIVE];
 static struct block_device *opened_bdev[N_DRIVE];
 static DEFINE_MUTEX(open_lock);
 static struct floppy_raw_cmd *raw_cmd, default_raw_cmd;
-static int fdc_queue;
 
 /*
  * This struct defines the different floppy types.
@@ -2216,8 +2216,9 @@ static void floppy_end_request(struct request *req, blk_status_t error)
 	/* current_count_sectors can be zero if transfer failed */
 	if (error)
 		nr_sectors = blk_rq_cur_sectors(req);
-	if (__blk_end_request(req, error, nr_sectors << 9))
+	if (blk_update_request(req, error, nr_sectors << 9))
 		return;
+	__blk_mq_end_request(req, error);
 
 	/* We're done with the request */
 	floppy_off(drive);
@@ -2797,27 +2798,14 @@ static int make_raw_rw_request(void)
 	return 2;
 }
 
-/*
- * Round-robin between our available drives, doing one request from each
- */
 static int set_next_request(void)
 {
-	struct request_queue *q;
-	int old_pos = fdc_queue;
-
-	do {
-		q = disks[fdc_queue]->queue;
-		if (++fdc_queue == N_DRIVE)
-			fdc_queue = 0;
-		if (q) {
-			current_req = blk_fetch_request(q);
-			if (current_req) {
-				current_req->error_count = 0;
-				break;
-			}
-		}
-	} while (fdc_queue != old_pos);
-
+	current_req = list_first_entry_or_null(&floppy_reqs, struct request,
+					       queuelist);
+	if (current_req) {
+		current_req->error_count = 0;
+		list_del_init(&current_req->queuelist);
+	}
 	return current_req != NULL;
 }
 
@@ -2901,29 +2889,38 @@ static void process_fd_request(void)
 	schedule_bh(redo_fd_request);
 }
 
-static void do_fd_request(struct request_queue *q)
+static blk_status_t floppy_queue_rq(struct blk_mq_hw_ctx *hctx,
+				    const struct blk_mq_queue_data *bd)
 {
+	blk_mq_start_request(bd->rq);
+
 	if (WARN(max_buffer_sectors == 0,
 		 "VFS: %s called on non-open device\n", __func__))
-		return;
+		return BLK_STS_IOERR;
 
 	if (WARN(atomic_read(&usage_count) == 0,
 		 "warning: usage count=0, current_req=%p sect=%ld flags=%llx\n",
 		 current_req, (long)blk_rq_pos(current_req),
 		 (unsigned long long) current_req->cmd_flags))
-		return;
+		return BLK_STS_IOERR;
+
+	spin_lock_irq(&floppy_lock);
+	list_add_tail(&bd->rq->queuelist, &floppy_reqs);
+	spin_unlock_irq(&floppy_lock);
 
 	if (test_and_set_bit(0, &fdc_busy)) {
 		/* fdc busy, this new request will be treated when the
 		   current one is done */
 		is_alive(__func__, "old request running");
-		return;
+		return BLK_STS_OK;
 	}
+
 	command_status = FD_COMMAND_NONE;
 	__reschedule_timeout(MAXTIMEOUT, "fd_request");
 	set_fdc(0);
 	process_fd_request();
 	is_alive(__func__, "");
+	return BLK_STS_OK;
 }
 
 static const struct cont_t poll_cont = {
@@ -4486,6 +4483,10 @@ static struct platform_driver floppy_driver = {
 	},
 };
 
+static const struct blk_mq_ops floppy_mq_ops = {
+	.queue_rq = floppy_queue_rq,
+};
+
 static struct platform_device floppy_device[N_DRIVE];
 
 static bool floppy_available(int drive)
@@ -4533,9 +4534,12 @@ static int __init do_floppy_init(void)
 			goto out_put_disk;
 		}
 
-		disks[drive]->queue = blk_init_queue(do_fd_request, &floppy_lock);
-		if (!disks[drive]->queue) {
-			err = -ENOMEM;
+		disks[drive]->queue = blk_mq_init_sq_queue(&tag_sets[drive],
+							   &floppy_mq_ops, 2,
+							   BLK_MQ_F_SHOULD_MERGE);
+		if (IS_ERR(disks[drive]->queue)) {
+			err = PTR_ERR(disks[drive]->queue);
+			disks[drive]->queue = NULL;
 			goto out_put_disk;
 		}
 
@@ -4679,7 +4683,7 @@ static int __init do_floppy_init(void)
 		/* to be cleaned up... */
 		disks[drive]->private_data = (void *)(long)drive;
 		disks[drive]->flags |= GENHD_FL_REMOVABLE;
-		device_add_disk(&floppy_device[drive].dev, disks[drive]);
+		device_add_disk(&floppy_device[drive].dev, disks[drive], NULL);
 	}
 
 	return 0;
@@ -4708,6 +4712,7 @@ out_put_disk:
 			del_timer_sync(&motor_off_timer[drive]);
 			blk_cleanup_queue(disks[drive]->queue);
 			disks[drive]->queue = NULL;
+			blk_mq_free_tag_set(&tag_sets[drive]);
 		}
 		put_disk(disks[drive]);
 	}
@@ -4935,6 +4940,7 @@ static void __exit floppy_module_exit(void)
 			platform_device_unregister(&floppy_device[drive]);
 		}
 		blk_cleanup_queue(disks[drive]->queue);
+		blk_mq_free_tag_set(&tag_sets[drive]);
 
 		/*
 		 * These disks have not called add_disk().  Don't put down
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index ea9debf59b22..abad6d15f956 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -77,6 +77,7 @@
 #include <linux/falloc.h>
 #include <linux/uio.h>
 #include <linux/ioprio.h>
+#include <linux/blk-cgroup.h>
 
 #include "loop.h"
 
@@ -1760,8 +1761,8 @@ static blk_status_t loop_queue_rq(struct blk_mq_hw_ctx *hctx,
 
 	/* always use the first bio's css */
 #ifdef CONFIG_BLK_CGROUP
-	if (cmd->use_aio && rq->bio && rq->bio->bi_css) {
-		cmd->css = rq->bio->bi_css;
+	if (cmd->use_aio && rq->bio && rq->bio->bi_blkg) {
+		cmd->css = &bio_blkcg(rq->bio)->css;
 		css_get(cmd->css);
 	} else
 #endif
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index d0666f5ce003..dfc8de6ce525 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -1862,11 +1862,9 @@ static int exec_drive_taskfile(struct driver_data *dd,
 		if (IS_ERR(outbuf))
 			return PTR_ERR(outbuf);
 
-		outbuf_dma = pci_map_single(dd->pdev,
-					 outbuf,
-					 taskout,
-					 DMA_TO_DEVICE);
-		if (pci_dma_mapping_error(dd->pdev, outbuf_dma)) {
+		outbuf_dma = dma_map_single(&dd->pdev->dev, outbuf,
+					    taskout, DMA_TO_DEVICE);
+		if (dma_mapping_error(&dd->pdev->dev, outbuf_dma)) {
 			err = -ENOMEM;
 			goto abort;
 		}
@@ -1880,10 +1878,9 @@ static int exec_drive_taskfile(struct driver_data *dd,
 			inbuf = NULL;
 			goto abort;
 		}
-		inbuf_dma = pci_map_single(dd->pdev,
-					 inbuf,
-					 taskin, DMA_FROM_DEVICE);
-		if (pci_dma_mapping_error(dd->pdev, inbuf_dma)) {
+		inbuf_dma = dma_map_single(&dd->pdev->dev, inbuf,
+					   taskin, DMA_FROM_DEVICE);
+		if (dma_mapping_error(&dd->pdev->dev, inbuf_dma)) {
 			err = -ENOMEM;
 			goto abort;
 		}
@@ -2002,11 +1999,11 @@ static int exec_drive_taskfile(struct driver_data *dd,
 
 	/* reclaim the DMA buffers.*/
 	if (inbuf_dma)
-		pci_unmap_single(dd->pdev, inbuf_dma,
-			taskin, DMA_FROM_DEVICE);
+		dma_unmap_single(&dd->pdev->dev, inbuf_dma, taskin,
+				 DMA_FROM_DEVICE);
 	if (outbuf_dma)
-		pci_unmap_single(dd->pdev, outbuf_dma,
-			taskout, DMA_TO_DEVICE);
+		dma_unmap_single(&dd->pdev->dev, outbuf_dma, taskout,
+				 DMA_TO_DEVICE);
 	inbuf_dma  = 0;
 	outbuf_dma = 0;
 
@@ -2053,11 +2050,11 @@ static int exec_drive_taskfile(struct driver_data *dd,
 	}
 abort:
 	if (inbuf_dma)
-		pci_unmap_single(dd->pdev, inbuf_dma,
-					taskin, DMA_FROM_DEVICE);
+		dma_unmap_single(&dd->pdev->dev, inbuf_dma, taskin,
+				 DMA_FROM_DEVICE);
 	if (outbuf_dma)
-		pci_unmap_single(dd->pdev, outbuf_dma,
-					taskout, DMA_TO_DEVICE);
+		dma_unmap_single(&dd->pdev->dev, outbuf_dma, taskout,
+				 DMA_TO_DEVICE);
 	kfree(outbuf);
 	kfree(inbuf);
 
@@ -3861,7 +3858,7 @@ skip_create_disk:
 	set_capacity(dd->disk, capacity);
 
 	/* Enable the block device and add it to /dev */
-	device_add_disk(&dd->pdev->dev, dd->disk);
+	device_add_disk(&dd->pdev->dev, dd->disk, NULL);
 
 	dd->bdev = bdget_disk(dd->disk, 0);
 	/*
@@ -4216,18 +4213,10 @@ static int mtip_pci_probe(struct pci_dev *pdev,
 		goto iomap_err;
 	}
 
-	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
-		rv = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
-
-		if (rv) {
-			rv = pci_set_consistent_dma_mask(pdev,
-						DMA_BIT_MASK(32));
-			if (rv) {
-				dev_warn(&pdev->dev,
-					"64-bit DMA enable failed\n");
-				goto setmask_err;
-			}
-		}
+	rv = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (rv) {
+		dev_warn(&pdev->dev, "64-bit DMA enable failed\n");
+		goto setmask_err;
 	}
 
 	/* Copy the info we may need later into the private data structure. */
diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c
index 093b614d6524..e94591021682 100644
--- a/drivers/block/null_blk_main.c
+++ b/drivers/block/null_blk_main.c
@@ -606,20 +606,12 @@ static struct nullb_cmd *alloc_cmd(struct nullb_queue *nq, int can_wait)
 
 static void end_cmd(struct nullb_cmd *cmd)
 {
-	struct request_queue *q = NULL;
 	int queue_mode = cmd->nq->dev->queue_mode;
 
-	if (cmd->rq)
-		q = cmd->rq->q;
-
 	switch (queue_mode)  {
 	case NULL_Q_MQ:
 		blk_mq_end_request(cmd->rq, cmd->error);
 		return;
-	case NULL_Q_RQ:
-		INIT_LIST_HEAD(&cmd->rq->queuelist);
-		blk_end_request_all(cmd->rq, cmd->error);
-		break;
 	case NULL_Q_BIO:
 		cmd->bio->bi_status = cmd->error;
 		bio_endio(cmd->bio);
@@ -627,15 +619,6 @@ static void end_cmd(struct nullb_cmd *cmd)
 	}
 
 	free_cmd(cmd);
-
-	/* Restart queue if needed, as we are freeing a tag */
-	if (queue_mode == NULL_Q_RQ && blk_queue_stopped(q)) {
-		unsigned long flags;
-
-		spin_lock_irqsave(q->queue_lock, flags);
-		blk_start_queue_async(q);
-		spin_unlock_irqrestore(q->queue_lock, flags);
-	}
 }
 
 static enum hrtimer_restart null_cmd_timer_expired(struct hrtimer *timer)
@@ -1136,25 +1119,14 @@ static void null_stop_queue(struct nullb *nullb)
 
 	if (nullb->dev->queue_mode == NULL_Q_MQ)
 		blk_mq_stop_hw_queues(q);
-	else {
-		spin_lock_irq(q->queue_lock);
-		blk_stop_queue(q);
-		spin_unlock_irq(q->queue_lock);
-	}
 }
 
 static void null_restart_queue_async(struct nullb *nullb)
 {
 	struct request_queue *q = nullb->q;
-	unsigned long flags;
 
 	if (nullb->dev->queue_mode == NULL_Q_MQ)
 		blk_mq_start_stopped_hw_queues(q, true);
-	else {
-		spin_lock_irqsave(q->queue_lock, flags);
-		blk_start_queue_async(q);
-		spin_unlock_irqrestore(q->queue_lock, flags);
-	}
 }
 
 static bool cmd_report_zone(struct nullb *nullb, struct nullb_cmd *cmd)
@@ -1197,17 +1169,8 @@ static blk_status_t null_handle_cmd(struct nullb_cmd *cmd)
 			/* race with timer */
 			if (atomic_long_read(&nullb->cur_bytes) > 0)
 				null_restart_queue_async(nullb);
-			if (dev->queue_mode == NULL_Q_RQ) {
-				struct request_queue *q = nullb->q;
-
-				spin_lock_irq(q->queue_lock);
-				rq->rq_flags |= RQF_DONTPREP;
-				blk_requeue_request(q, rq);
-				spin_unlock_irq(q->queue_lock);
-				return BLK_STS_OK;
-			} else
-				/* requeue request */
-				return BLK_STS_DEV_RESOURCE;
+			/* requeue request */
+			return BLK_STS_DEV_RESOURCE;
 		}
 	}
 
@@ -1278,9 +1241,6 @@ out:
 		case NULL_Q_MQ:
 			blk_mq_complete_request(cmd->rq);
 			break;
-		case NULL_Q_RQ:
-			blk_complete_request(cmd->rq);
-			break;
 		case NULL_Q_BIO:
 			/*
 			 * XXX: no proper submitting cpu information available.
@@ -1349,30 +1309,6 @@ static blk_qc_t null_queue_bio(struct request_queue *q, struct bio *bio)
 	return BLK_QC_T_NONE;
 }
 
-static enum blk_eh_timer_return null_rq_timed_out_fn(struct request *rq)
-{
-	pr_info("null: rq %p timed out\n", rq);
-	__blk_complete_request(rq);
-	return BLK_EH_DONE;
-}
-
-static int null_rq_prep_fn(struct request_queue *q, struct request *req)
-{
-	struct nullb *nullb = q->queuedata;
-	struct nullb_queue *nq = nullb_to_queue(nullb);
-	struct nullb_cmd *cmd;
-
-	cmd = alloc_cmd(nq, 0);
-	if (cmd) {
-		cmd->rq = req;
-		req->special = cmd;
-		return BLKPREP_OK;
-	}
-	blk_stop_queue(q);
-
-	return BLKPREP_DEFER;
-}
-
 static bool should_timeout_request(struct request *rq)
 {
 #ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
@@ -1391,27 +1327,6 @@ static bool should_requeue_request(struct request *rq)
 	return false;
 }
 
-static void null_request_fn(struct request_queue *q)
-{
-	struct request *rq;
-
-	while ((rq = blk_fetch_request(q)) != NULL) {
-		struct nullb_cmd *cmd = rq->special;
-
-		/* just ignore the request */
-		if (should_timeout_request(rq))
-			continue;
-		if (should_requeue_request(rq)) {
-			blk_requeue_request(q, rq);
-			continue;
-		}
-
-		spin_unlock_irq(q->queue_lock);
-		null_handle_cmd(cmd);
-		spin_lock_irq(q->queue_lock);
-	}
-}
-
 static enum blk_eh_timer_return null_timeout_rq(struct request *rq, bool res)
 {
 	pr_info("null: rq %p timed out\n", rq);
@@ -1766,24 +1681,6 @@ static int null_add_dev(struct nullb_device *dev)
 		rv = init_driver_queues(nullb);
 		if (rv)
 			goto out_cleanup_blk_queue;
-	} else {
-		nullb->q = blk_init_queue_node(null_request_fn, &nullb->lock,
-						dev->home_node);
-		if (!nullb->q) {
-			rv = -ENOMEM;
-			goto out_cleanup_queues;
-		}
-
-		if (!null_setup_fault())
-			goto out_cleanup_blk_queue;
-
-		blk_queue_prep_rq(nullb->q, null_rq_prep_fn);
-		blk_queue_softirq_done(nullb->q, null_softirq_done_fn);
-		blk_queue_rq_timed_out(nullb->q, null_rq_timed_out_fn);
-		nullb->q->rq_timeout = 5 * HZ;
-		rv = init_driver_queues(nullb);
-		if (rv)
-			goto out_cleanup_blk_queue;
 	}
 
 	if (dev->mbps) {
@@ -1865,6 +1762,10 @@ static int __init null_init(void)
 		return -EINVAL;
 	}
 
+	if (g_queue_mode == NULL_Q_RQ) {
+		pr_err("null_blk: legacy IO path no longer available\n");
+		return -EINVAL;
+	}
 	if (g_queue_mode == NULL_Q_MQ && g_use_per_node_hctx) {
 		if (g_submit_queues != nr_online_nodes) {
 			pr_warn("null_blk: submit_queues param is set to %u.\n",
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c
index a026211afb51..96670eefaeb2 100644
--- a/drivers/block/paride/pcd.c
+++ b/drivers/block/paride/pcd.c
@@ -137,7 +137,7 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_DLY};
 #include <linux/delay.h>
 #include <linux/cdrom.h>
 #include <linux/spinlock.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/mutex.h>
 #include <linux/uaccess.h>
 
@@ -186,7 +186,8 @@ static int pcd_packet(struct cdrom_device_info *cdi,
 static int pcd_detect(void);
 static void pcd_probe_capabilities(void);
 static void do_pcd_read_drq(void);
-static void do_pcd_request(struct request_queue * q);
+static blk_status_t pcd_queue_rq(struct blk_mq_hw_ctx *hctx,
+				 const struct blk_mq_queue_data *bd);
 static void do_pcd_read(void);
 
 struct pcd_unit {
@@ -199,6 +200,8 @@ struct pcd_unit {
 	char *name;		/* pcd0, pcd1, etc */
 	struct cdrom_device_info info;	/* uniform cdrom interface */
 	struct gendisk *disk;
+	struct blk_mq_tag_set tag_set;
+	struct list_head rq_list;
 };
 
 static struct pcd_unit pcd[PCD_UNITS];
@@ -292,6 +295,10 @@ static const struct cdrom_device_ops pcd_dops = {
 			  CDC_CD_RW,
 };
 
+static const struct blk_mq_ops pcd_mq_ops = {
+	.queue_rq	= pcd_queue_rq,
+};
+
 static void pcd_init_units(void)
 {
 	struct pcd_unit *cd;
@@ -300,13 +307,19 @@ static void pcd_init_units(void)
 	pcd_drive_count = 0;
 	for (unit = 0, cd = pcd; unit < PCD_UNITS; unit++, cd++) {
 		struct gendisk *disk = alloc_disk(1);
+
 		if (!disk)
 			continue;
-		disk->queue = blk_init_queue(do_pcd_request, &pcd_lock);
-		if (!disk->queue) {
-			put_disk(disk);
+
+		disk->queue = blk_mq_init_sq_queue(&cd->tag_set, &pcd_mq_ops,
+						   1, BLK_MQ_F_SHOULD_MERGE);
+		if (IS_ERR(disk->queue)) {
+			disk->queue = NULL;
 			continue;
 		}
+
+		INIT_LIST_HEAD(&cd->rq_list);
+		disk->queue->queuedata = cd;
 		blk_queue_bounce_limit(disk->queue, BLK_BOUNCE_HIGH);
 		cd->disk = disk;
 		cd->pi = &cd->pia;
@@ -748,18 +761,18 @@ static int pcd_queue;
 static int set_next_request(void)
 {
 	struct pcd_unit *cd;
-	struct request_queue *q;
 	int old_pos = pcd_queue;
 
 	do {
 		cd = &pcd[pcd_queue];
-		q = cd->present ? cd->disk->queue : NULL;
 		if (++pcd_queue == PCD_UNITS)
 			pcd_queue = 0;
-		if (q) {
-			pcd_req = blk_fetch_request(q);
-			if (pcd_req)
-				break;
+		if (cd->present && !list_empty(&cd->rq_list)) {
+			pcd_req = list_first_entry(&cd->rq_list, struct request,
+							queuelist);
+			list_del_init(&pcd_req->queuelist);
+			blk_mq_start_request(pcd_req);
+			break;
 		}
 	} while (pcd_queue != old_pos);
 
@@ -768,33 +781,41 @@ static int set_next_request(void)
 
 static void pcd_request(void)
 {
+	struct pcd_unit *cd;
+
 	if (pcd_busy)
 		return;
-	while (1) {
-		if (!pcd_req && !set_next_request())
-			return;
 
-		if (rq_data_dir(pcd_req) == READ) {
-			struct pcd_unit *cd = pcd_req->rq_disk->private_data;
-			if (cd != pcd_current)
-				pcd_bufblk = -1;
-			pcd_current = cd;
-			pcd_sector = blk_rq_pos(pcd_req);
-			pcd_count = blk_rq_cur_sectors(pcd_req);
-			pcd_buf = bio_data(pcd_req->bio);
-			pcd_busy = 1;
-			ps_set_intr(do_pcd_read, NULL, 0, nice);
-			return;
-		} else {
-			__blk_end_request_all(pcd_req, BLK_STS_IOERR);
-			pcd_req = NULL;
-		}
-	}
+	if (!pcd_req && !set_next_request())
+		return;
+
+	cd = pcd_req->rq_disk->private_data;
+	if (cd != pcd_current)
+		pcd_bufblk = -1;
+	pcd_current = cd;
+	pcd_sector = blk_rq_pos(pcd_req);
+	pcd_count = blk_rq_cur_sectors(pcd_req);
+	pcd_buf = bio_data(pcd_req->bio);
+	pcd_busy = 1;
+	ps_set_intr(do_pcd_read, NULL, 0, nice);
 }
 
-static void do_pcd_request(struct request_queue *q)
+static blk_status_t pcd_queue_rq(struct blk_mq_hw_ctx *hctx,
+				 const struct blk_mq_queue_data *bd)
 {
+	struct pcd_unit *cd = hctx->queue->queuedata;
+
+	if (rq_data_dir(bd->rq) != READ) {
+		blk_mq_start_request(bd->rq);
+		return BLK_STS_IOERR;
+	}
+
+	spin_lock_irq(&pcd_lock);
+	list_add_tail(&bd->rq->queuelist, &cd->rq_list);
 	pcd_request();
+	spin_unlock_irq(&pcd_lock);
+
+	return BLK_STS_OK;
 }
 
 static inline void next_request(blk_status_t err)
@@ -802,8 +823,10 @@ static inline void next_request(blk_status_t err)
 	unsigned long saved_flags;
 
 	spin_lock_irqsave(&pcd_lock, saved_flags);
-	if (!__blk_end_request_cur(pcd_req, err))
+	if (!blk_update_request(pcd_req, err, blk_rq_cur_bytes(pcd_req))) {
+		__blk_mq_end_request(pcd_req, err);
 		pcd_req = NULL;
+	}
 	pcd_busy = 0;
 	pcd_request();
 	spin_unlock_irqrestore(&pcd_lock, saved_flags);
@@ -1011,6 +1034,7 @@ static void __exit pcd_exit(void)
 			unregister_cdrom(&cd->info);
 		}
 		blk_cleanup_queue(cd->disk->queue);
+		blk_mq_free_tag_set(&cd->tag_set);
 		put_disk(cd->disk);
 	}
 	unregister_blkdev(major, name);
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index 7cf947586fe4..ae4971e5d9a8 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -151,7 +151,7 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_GEO, D_SBY, D_DLY, D_SLV};
 #include <linux/delay.h>
 #include <linux/hdreg.h>
 #include <linux/cdrom.h>	/* for the eject ioctl */
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/blkpg.h>
 #include <linux/kernel.h>
 #include <linux/mutex.h>
@@ -236,6 +236,8 @@ struct pd_unit {
 	int alt_geom;
 	char name[PD_NAMELEN];	/* pda, pdb, etc ... */
 	struct gendisk *gd;
+	struct blk_mq_tag_set tag_set;
+	struct list_head rq_list;
 };
 
 static struct pd_unit pd[PD_UNITS];
@@ -399,9 +401,17 @@ static int set_next_request(void)
 		if (++pd_queue == PD_UNITS)
 			pd_queue = 0;
 		if (q) {
-			pd_req = blk_fetch_request(q);
-			if (pd_req)
-				break;
+			struct pd_unit *disk = q->queuedata;
+
+			if (list_empty(&disk->rq_list))
+				continue;
+
+			pd_req = list_first_entry(&disk->rq_list,
+							struct request,
+							queuelist);
+			list_del_init(&pd_req->queuelist);
+			blk_mq_start_request(pd_req);
+			break;
 		}
 	} while (pd_queue != old_pos);
 
@@ -412,7 +422,6 @@ static void run_fsm(void)
 {
 	while (1) {
 		enum action res;
-		unsigned long saved_flags;
 		int stop = 0;
 
 		if (!phase) {
@@ -433,19 +442,24 @@ static void run_fsm(void)
 		}
 
 		switch(res = phase()) {
-			case Ok: case Fail:
+			case Ok: case Fail: {
+				blk_status_t err;
+
+				err = res == Ok ? 0 : BLK_STS_IOERR;
 				pi_disconnect(pi_current);
 				pd_claimed = 0;
 				phase = NULL;
-				spin_lock_irqsave(&pd_lock, saved_flags);
-				if (!__blk_end_request_cur(pd_req,
-						res == Ok ? 0 : BLK_STS_IOERR)) {
-					if (!set_next_request())
-						stop = 1;
+				spin_lock_irq(&pd_lock);
+				if (!blk_update_request(pd_req, err,
+						blk_rq_cur_bytes(pd_req))) {
+					__blk_mq_end_request(pd_req, err);
+					pd_req = NULL;
+					stop = !set_next_request();
 				}
-				spin_unlock_irqrestore(&pd_lock, saved_flags);
+				spin_unlock_irq(&pd_lock);
 				if (stop)
 					return;
+				}
 				/* fall through */
 			case Hold:
 				schedule_fsm();
@@ -505,11 +519,17 @@ static int pd_next_buf(void)
 	if (pd_count)
 		return 0;
 	spin_lock_irqsave(&pd_lock, saved_flags);
-	__blk_end_request_cur(pd_req, 0);
-	pd_count = blk_rq_cur_sectors(pd_req);
-	pd_buf = bio_data(pd_req->bio);
+	if (!blk_update_request(pd_req, 0, blk_rq_cur_bytes(pd_req))) {
+		__blk_mq_end_request(pd_req, 0);
+		pd_req = NULL;
+		pd_count = 0;
+		pd_buf = NULL;
+	} else {
+		pd_count = blk_rq_cur_sectors(pd_req);
+		pd_buf = bio_data(pd_req->bio);
+	}
 	spin_unlock_irqrestore(&pd_lock, saved_flags);
-	return 0;
+	return !pd_count;
 }
 
 static unsigned long pd_timeout;
@@ -726,15 +746,21 @@ static enum action pd_identify(struct pd_unit *disk)
 
 /* end of io request engine */
 
-static void do_pd_request(struct request_queue * q)
+static blk_status_t pd_queue_rq(struct blk_mq_hw_ctx *hctx,
+				const struct blk_mq_queue_data *bd)
 {
-	if (pd_req)
-		return;
-	pd_req = blk_fetch_request(q);
-	if (!pd_req)
-		return;
+	struct pd_unit *disk = hctx->queue->queuedata;
+
+	spin_lock_irq(&pd_lock);
+	if (!pd_req) {
+		pd_req = bd->rq;
+		blk_mq_start_request(pd_req);
+	} else
+		list_add_tail(&bd->rq->queuelist, &disk->rq_list);
+	spin_unlock_irq(&pd_lock);
 
-	schedule_fsm();
+	run_fsm();
+	return BLK_STS_OK;
 }
 
 static int pd_special_command(struct pd_unit *disk,
@@ -847,23 +873,33 @@ static const struct block_device_operations pd_fops = {
 
 /* probing */
 
+static const struct blk_mq_ops pd_mq_ops = {
+	.queue_rq	= pd_queue_rq,
+};
+
 static void pd_probe_drive(struct pd_unit *disk)
 {
-	struct gendisk *p = alloc_disk(1 << PD_BITS);
+	struct gendisk *p;
+
+	p = alloc_disk(1 << PD_BITS);
 	if (!p)
 		return;
+
 	strcpy(p->disk_name, disk->name);
 	p->fops = &pd_fops;
 	p->major = major;
 	p->first_minor = (disk - pd) << PD_BITS;
 	disk->gd = p;
 	p->private_data = disk;
-	p->queue = blk_init_queue(do_pd_request, &pd_lock);
-	if (!p->queue) {
-		disk->gd = NULL;
-		put_disk(p);
+
+	p->queue = blk_mq_init_sq_queue(&disk->tag_set, &pd_mq_ops, 2,
+				BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING);
+	if (IS_ERR(p->queue)) {
+		p->queue = NULL;
 		return;
 	}
+
+	p->queue->queuedata = disk;
 	blk_queue_max_hw_sectors(p->queue, cluster);
 	blk_queue_bounce_limit(p->queue, BLK_BOUNCE_HIGH);
 
@@ -895,6 +931,7 @@ static int pd_detect(void)
 		disk->standby = parm[D_SBY];
 		if (parm[D_PRT])
 			pd_drive_count++;
+		INIT_LIST_HEAD(&disk->rq_list);
 	}
 
 	par_drv = pi_register_driver(name);
@@ -972,6 +1009,7 @@ static void __exit pd_exit(void)
 			disk->gd = NULL;
 			del_gendisk(p);
 			blk_cleanup_queue(p->queue);
+			blk_mq_free_tag_set(&disk->tag_set);
 			put_disk(p);
 			pi_release(disk->pi);
 		}
diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c
index eef7a91f667d..e92e7a8eeeb2 100644
--- a/drivers/block/paride/pf.c
+++ b/drivers/block/paride/pf.c
@@ -152,7 +152,7 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_LUN, D_DLY};
 #include <linux/hdreg.h>
 #include <linux/cdrom.h>
 #include <linux/spinlock.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/blkpg.h>
 #include <linux/mutex.h>
 #include <linux/uaccess.h>
@@ -206,7 +206,8 @@ module_param_array(drive3, int, NULL, 0);
 #define ATAPI_WRITE_10		0x2a
 
 static int pf_open(struct block_device *bdev, fmode_t mode);
-static void do_pf_request(struct request_queue * q);
+static blk_status_t pf_queue_rq(struct blk_mq_hw_ctx *hctx,
+				const struct blk_mq_queue_data *bd);
 static int pf_ioctl(struct block_device *bdev, fmode_t mode,
 		    unsigned int cmd, unsigned long arg);
 static int pf_getgeo(struct block_device *bdev, struct hd_geometry *geo);
@@ -238,6 +239,8 @@ struct pf_unit {
 	int present;		/* device present ? */
 	char name[PF_NAMELEN];	/* pf0, pf1, ... */
 	struct gendisk *disk;
+	struct blk_mq_tag_set tag_set;
+	struct list_head rq_list;
 };
 
 static struct pf_unit units[PF_UNITS];
@@ -277,6 +280,10 @@ static const struct block_device_operations pf_fops = {
 	.check_events	= pf_check_events,
 };
 
+static const struct blk_mq_ops pf_mq_ops = {
+	.queue_rq	= pf_queue_rq,
+};
+
 static void __init pf_init_units(void)
 {
 	struct pf_unit *pf;
@@ -284,14 +291,22 @@ static void __init pf_init_units(void)
 
 	pf_drive_count = 0;
 	for (unit = 0, pf = units; unit < PF_UNITS; unit++, pf++) {
-		struct gendisk *disk = alloc_disk(1);
+		struct gendisk *disk;
+
+		disk = alloc_disk(1);
 		if (!disk)
 			continue;
-		disk->queue = blk_init_queue(do_pf_request, &pf_spin_lock);
-		if (!disk->queue) {
+
+		disk->queue = blk_mq_init_sq_queue(&pf->tag_set, &pf_mq_ops,
+							1, BLK_MQ_F_SHOULD_MERGE);
+		if (IS_ERR(disk->queue)) {
 			put_disk(disk);
-			return;
+			disk->queue = NULL;
+			continue;
 		}
+
+		INIT_LIST_HEAD(&pf->rq_list);
+		disk->queue->queuedata = pf;
 		blk_queue_max_segments(disk->queue, cluster);
 		blk_queue_bounce_limit(disk->queue, BLK_BOUNCE_HIGH);
 		pf->disk = disk;
@@ -784,18 +799,18 @@ static int pf_queue;
 static int set_next_request(void)
 {
 	struct pf_unit *pf;
-	struct request_queue *q;
 	int old_pos = pf_queue;
 
 	do {
 		pf = &units[pf_queue];
-		q = pf->present ? pf->disk->queue : NULL;
 		if (++pf_queue == PF_UNITS)
 			pf_queue = 0;
-		if (q) {
-			pf_req = blk_fetch_request(q);
-			if (pf_req)
-				break;
+		if (pf->present && !list_empty(&pf->rq_list)) {
+			pf_req = list_first_entry(&pf->rq_list, struct request,
+							queuelist);
+			list_del_init(&pf_req->queuelist);
+			blk_mq_start_request(pf_req);
+			break;
 		}
 	} while (pf_queue != old_pos);
 
@@ -804,8 +819,12 @@ static int set_next_request(void)
 
 static void pf_end_request(blk_status_t err)
 {
-	if (pf_req && !__blk_end_request_cur(pf_req, err))
+	if (!pf_req)
+		return;
+	if (!blk_update_request(pf_req, err, blk_rq_cur_bytes(pf_req))) {
+		__blk_mq_end_request(pf_req, err);
 		pf_req = NULL;
+	}
 }
 
 static void pf_request(void)
@@ -842,9 +861,17 @@ repeat:
 	}
 }
 
-static void do_pf_request(struct request_queue *q)
+static blk_status_t pf_queue_rq(struct blk_mq_hw_ctx *hctx,
+				const struct blk_mq_queue_data *bd)
 {
+	struct pf_unit *pf = hctx->queue->queuedata;
+
+	spin_lock_irq(&pf_spin_lock);
+	list_add_tail(&bd->rq->queuelist, &pf->rq_list);
 	pf_request();
+	spin_unlock_irq(&pf_spin_lock);
+
+	return BLK_STS_OK;
 }
 
 static int pf_next_buf(void)
@@ -1024,6 +1051,7 @@ static void __exit pf_exit(void)
 			continue;
 		del_gendisk(pf->disk);
 		blk_cleanup_queue(pf->disk->queue);
+		blk_mq_free_tag_set(&pf->tag_set);
 		put_disk(pf->disk);
 		pi_release(pf->pi);
 	}
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 6f1d25c1eb64..9381f4e3b221 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2645,7 +2645,7 @@ static int pkt_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
 		 */
 		if (pd->refcnt == 1)
 			pkt_lock_door(pd, 0);
-		/* fallthru */
+		/* fall through */
 	/*
 	 * forward selected CDROM ioctls to CD-ROM, for UDF
 	 */
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index afe1508d82c6..4e1d9b31f60c 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -19,7 +19,7 @@
  */
 
 #include <linux/ata.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 
@@ -42,6 +42,7 @@
 struct ps3disk_private {
 	spinlock_t lock;		/* Request queue spinlock */
 	struct request_queue *queue;
+	struct blk_mq_tag_set tag_set;
 	struct gendisk *gendisk;
 	unsigned int blocking_factor;
 	struct request *req;
@@ -118,8 +119,8 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev,
 	}
 }
 
-static int ps3disk_submit_request_sg(struct ps3_storage_device *dev,
-				     struct request *req)
+static blk_status_t ps3disk_submit_request_sg(struct ps3_storage_device *dev,
+					      struct request *req)
 {
 	struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
 	int write = rq_data_dir(req), res;
@@ -158,16 +159,15 @@ static int ps3disk_submit_request_sg(struct ps3_storage_device *dev,
 	if (res) {
 		dev_err(&dev->sbd.core, "%s:%u: %s failed %d\n", __func__,
 			__LINE__, op, res);
-		__blk_end_request_all(req, BLK_STS_IOERR);
-		return 0;
+		return BLK_STS_IOERR;
 	}
 
 	priv->req = req;
-	return 1;
+	return BLK_STS_OK;
 }
 
-static int ps3disk_submit_flush_request(struct ps3_storage_device *dev,
-					struct request *req)
+static blk_status_t ps3disk_submit_flush_request(struct ps3_storage_device *dev,
+						 struct request *req)
 {
 	struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
 	u64 res;
@@ -180,50 +180,45 @@ static int ps3disk_submit_flush_request(struct ps3_storage_device *dev,
 	if (res) {
 		dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%llx\n",
 			__func__, __LINE__, res);
-		__blk_end_request_all(req, BLK_STS_IOERR);
-		return 0;
+		return BLK_STS_IOERR;
 	}
 
 	priv->req = req;
-	return 1;
+	return BLK_STS_OK;
 }
 
-static void ps3disk_do_request(struct ps3_storage_device *dev,
-			       struct request_queue *q)
+static blk_status_t ps3disk_do_request(struct ps3_storage_device *dev,
+				       struct request *req)
 {
-	struct request *req;
-
 	dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
 
-	while ((req = blk_fetch_request(q))) {
-		switch (req_op(req)) {
-		case REQ_OP_FLUSH:
-			if (ps3disk_submit_flush_request(dev, req))
-				return;
-			break;
-		case REQ_OP_READ:
-		case REQ_OP_WRITE:
-			if (ps3disk_submit_request_sg(dev, req))
-				return;
-			break;
-		default:
-			blk_dump_rq_flags(req, DEVICE_NAME " bad request");
-			__blk_end_request_all(req, BLK_STS_IOERR);
-		}
+	switch (req_op(req)) {
+	case REQ_OP_FLUSH:
+		return ps3disk_submit_flush_request(dev, req);
+	case REQ_OP_READ:
+	case REQ_OP_WRITE:
+		return ps3disk_submit_request_sg(dev, req);
+	default:
+		blk_dump_rq_flags(req, DEVICE_NAME " bad request");
+		return BLK_STS_IOERR;
 	}
 }
 
-static void ps3disk_request(struct request_queue *q)
+static blk_status_t ps3disk_queue_rq(struct blk_mq_hw_ctx *hctx,
+				     const struct blk_mq_queue_data *bd)
 {
+	struct request_queue *q = hctx->queue;
 	struct ps3_storage_device *dev = q->queuedata;
 	struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
+	blk_status_t ret;
 
-	if (priv->req) {
-		dev_dbg(&dev->sbd.core, "%s:%u busy\n", __func__, __LINE__);
-		return;
-	}
+	blk_mq_start_request(bd->rq);
+
+	spin_lock_irq(&priv->lock);
+	ret = ps3disk_do_request(dev, bd->rq);
+	spin_unlock_irq(&priv->lock);
 
-	ps3disk_do_request(dev, q);
+	return ret;
 }
 
 static irqreturn_t ps3disk_interrupt(int irq, void *data)
@@ -280,11 +275,11 @@ static irqreturn_t ps3disk_interrupt(int irq, void *data)
 	}
 
 	spin_lock(&priv->lock);
-	__blk_end_request_all(req, error);
 	priv->req = NULL;
-	ps3disk_do_request(dev, priv->queue);
+	blk_mq_end_request(req, error);
 	spin_unlock(&priv->lock);
 
+	blk_mq_run_hw_queues(priv->queue, true);
 	return IRQ_HANDLED;
 }
 
@@ -404,6 +399,10 @@ static unsigned long ps3disk_mask;
 
 static DEFINE_MUTEX(ps3disk_mask_mutex);
 
+static const struct blk_mq_ops ps3disk_mq_ops = {
+	.queue_rq	= ps3disk_queue_rq,
+};
+
 static int ps3disk_probe(struct ps3_system_bus_device *_dev)
 {
 	struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core);
@@ -454,11 +453,12 @@ static int ps3disk_probe(struct ps3_system_bus_device *_dev)
 
 	ps3disk_identify(dev);
 
-	queue = blk_init_queue(ps3disk_request, &priv->lock);
-	if (!queue) {
-		dev_err(&dev->sbd.core, "%s:%u: blk_init_queue failed\n",
+	queue = blk_mq_init_sq_queue(&priv->tag_set, &ps3disk_mq_ops, 1,
+					BLK_MQ_F_SHOULD_MERGE);
+	if (IS_ERR(queue)) {
+		dev_err(&dev->sbd.core, "%s:%u: blk_mq_init_queue failed\n",
 			__func__, __LINE__);
-		error = -ENOMEM;
+		error = PTR_ERR(queue);
 		goto fail_teardown;
 	}
 
@@ -500,11 +500,12 @@ static int ps3disk_probe(struct ps3_system_bus_device *_dev)
 		 gendisk->disk_name, priv->model, priv->raw_capacity >> 11,
 		 get_capacity(gendisk) >> 11);
 
-	device_add_disk(&dev->sbd.core, gendisk);
+	device_add_disk(&dev->sbd.core, gendisk, NULL);
 	return 0;
 
 fail_cleanup_queue:
 	blk_cleanup_queue(queue);
+	blk_mq_free_tag_set(&priv->tag_set);
 fail_teardown:
 	ps3stor_teardown(dev);
 fail_free_bounce:
@@ -530,6 +531,7 @@ static int ps3disk_remove(struct ps3_system_bus_device *_dev)
 	mutex_unlock(&ps3disk_mask_mutex);
 	del_gendisk(priv->gendisk);
 	blk_cleanup_queue(priv->queue);
+	blk_mq_free_tag_set(&priv->tag_set);
 	put_disk(priv->gendisk);
 	dev_notice(&dev->sbd.core, "Synchronizing disk cache\n");
 	ps3disk_sync_cache(dev);
diff --git a/drivers/block/ps3vram.c b/drivers/block/ps3vram.c
index 1e3d5de9d838..c0c50816a10b 100644
--- a/drivers/block/ps3vram.c
+++ b/drivers/block/ps3vram.c
@@ -769,7 +769,7 @@ static int ps3vram_probe(struct ps3_system_bus_device *dev)
 	dev_info(&dev->core, "%s: Using %lu MiB of GPU memory\n",
 		 gendisk->disk_name, get_capacity(gendisk) >> 11);
 
-	device_add_disk(&dev->core, gendisk);
+	device_add_disk(&dev->core, gendisk, NULL);
 	return 0;
 
 fail_cleanup_queue:
diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c
index f2c631ce793c..639051502181 100644
--- a/drivers/block/rsxx/core.c
+++ b/drivers/block/rsxx/core.c
@@ -782,7 +782,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
 	pci_set_master(dev);
 	pci_set_dma_max_seg_size(dev, RSXX_HW_BLK_SIZE);
 
-	st = pci_set_dma_mask(dev, DMA_BIT_MASK(64));
+	st = dma_set_mask(&dev->dev, DMA_BIT_MASK(64));
 	if (st) {
 		dev_err(CARD_TO_DEV(card),
 			"No usable DMA configuration,aborting\n");
diff --git a/drivers/block/rsxx/cregs.c b/drivers/block/rsxx/cregs.c
index c148e83e4ed7..d9a8758682c9 100644
--- a/drivers/block/rsxx/cregs.c
+++ b/drivers/block/rsxx/cregs.c
@@ -276,7 +276,7 @@ static void creg_cmd_done(struct work_struct *work)
 		st = -EIO;
 	}
 
-	if ((cmd->op == CREG_OP_READ)) {
+	if (cmd->op == CREG_OP_READ) {
 		unsigned int cnt8 = ioread32(card->regmap + CREG_CNT);
 
 		/* Paranoid Sanity Checks */
diff --git a/drivers/block/rsxx/dev.c b/drivers/block/rsxx/dev.c
index 1a92f9e65937..3894aa0f350b 100644
--- a/drivers/block/rsxx/dev.c
+++ b/drivers/block/rsxx/dev.c
@@ -226,7 +226,7 @@ int rsxx_attach_dev(struct rsxx_cardinfo *card)
 			set_capacity(card->gendisk, card->size8 >> 9);
 		else
 			set_capacity(card->gendisk, 0);
-		device_add_disk(CARD_TO_DEV(card), card->gendisk);
+		device_add_disk(CARD_TO_DEV(card), card->gendisk, NULL);
 		card->bdev_attached = 1;
 	}
 
diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c
index 8fbc1bf6db3d..af9cf0215164 100644
--- a/drivers/block/rsxx/dma.c
+++ b/drivers/block/rsxx/dma.c
@@ -224,12 +224,12 @@ static void dma_intr_coal_auto_tune(struct rsxx_cardinfo *card)
 static void rsxx_free_dma(struct rsxx_dma_ctrl *ctrl, struct rsxx_dma *dma)
 {
 	if (dma->cmd != HW_CMD_BLK_DISCARD) {
-		if (!pci_dma_mapping_error(ctrl->card->dev, dma->dma_addr)) {
-			pci_unmap_page(ctrl->card->dev, dma->dma_addr,
+		if (!dma_mapping_error(&ctrl->card->dev->dev, dma->dma_addr)) {
+			dma_unmap_page(&ctrl->card->dev->dev, dma->dma_addr,
 				       get_dma_size(dma),
 				       dma->cmd == HW_CMD_BLK_WRITE ?
-						   PCI_DMA_TODEVICE :
-						   PCI_DMA_FROMDEVICE);
+						   DMA_TO_DEVICE :
+						   DMA_FROM_DEVICE);
 		}
 	}
 
@@ -438,23 +438,23 @@ static void rsxx_issue_dmas(struct rsxx_dma_ctrl *ctrl)
 
 		if (dma->cmd != HW_CMD_BLK_DISCARD) {
 			if (dma->cmd == HW_CMD_BLK_WRITE)
-				dir = PCI_DMA_TODEVICE;
+				dir = DMA_TO_DEVICE;
 			else
-				dir = PCI_DMA_FROMDEVICE;
+				dir = DMA_FROM_DEVICE;
 
 			/*
-			 * The function pci_map_page is placed here because we
+			 * The function dma_map_page is placed here because we
 			 * can only, by design, issue up to 255 commands to the
 			 * hardware at one time per DMA channel. So the maximum
 			 * amount of mapped memory would be 255 * 4 channels *
 			 * 4096 Bytes which is less than 2GB, the limit of a x8
-			 * Non-HWWD PCIe slot. This way the pci_map_page
+			 * Non-HWWD PCIe slot. This way the dma_map_page
 			 * function should never fail because of a lack of
 			 * mappable memory.
 			 */
-			dma->dma_addr = pci_map_page(ctrl->card->dev, dma->page,
+			dma->dma_addr = dma_map_page(&ctrl->card->dev->dev, dma->page,
 					dma->pg_off, dma->sub_page.cnt << 9, dir);
-			if (pci_dma_mapping_error(ctrl->card->dev, dma->dma_addr)) {
+			if (dma_mapping_error(&ctrl->card->dev->dev, dma->dma_addr)) {
 				push_tracker(ctrl->trackers, tag);
 				rsxx_complete_dma(ctrl, dma, DMA_CANCELLED);
 				continue;
@@ -776,10 +776,10 @@ bvec_err:
 /*----------------- DMA Engine Initialization & Setup -------------------*/
 int rsxx_hw_buffers_init(struct pci_dev *dev, struct rsxx_dma_ctrl *ctrl)
 {
-	ctrl->status.buf = pci_alloc_consistent(dev, STATUS_BUFFER_SIZE8,
-				&ctrl->status.dma_addr);
-	ctrl->cmd.buf = pci_alloc_consistent(dev, COMMAND_BUFFER_SIZE8,
-				&ctrl->cmd.dma_addr);
+	ctrl->status.buf = dma_alloc_coherent(&dev->dev, STATUS_BUFFER_SIZE8,
+				&ctrl->status.dma_addr, GFP_KERNEL);
+	ctrl->cmd.buf = dma_alloc_coherent(&dev->dev, COMMAND_BUFFER_SIZE8,
+				&ctrl->cmd.dma_addr, GFP_KERNEL);
 	if (ctrl->status.buf == NULL || ctrl->cmd.buf == NULL)
 		return -ENOMEM;
 
@@ -962,12 +962,12 @@ failed_dma_setup:
 			vfree(ctrl->trackers);
 
 		if (ctrl->status.buf)
-			pci_free_consistent(card->dev, STATUS_BUFFER_SIZE8,
-					    ctrl->status.buf,
-					    ctrl->status.dma_addr);
+			dma_free_coherent(&card->dev->dev, STATUS_BUFFER_SIZE8,
+					  ctrl->status.buf,
+					  ctrl->status.dma_addr);
 		if (ctrl->cmd.buf)
-			pci_free_consistent(card->dev, COMMAND_BUFFER_SIZE8,
-					    ctrl->cmd.buf, ctrl->cmd.dma_addr);
+			dma_free_coherent(&card->dev->dev, COMMAND_BUFFER_SIZE8,
+					  ctrl->cmd.buf, ctrl->cmd.dma_addr);
 	}
 
 	return st;
@@ -1023,10 +1023,10 @@ void rsxx_dma_destroy(struct rsxx_cardinfo *card)
 
 		vfree(ctrl->trackers);
 
-		pci_free_consistent(card->dev, STATUS_BUFFER_SIZE8,
-				    ctrl->status.buf, ctrl->status.dma_addr);
-		pci_free_consistent(card->dev, COMMAND_BUFFER_SIZE8,
-				    ctrl->cmd.buf, ctrl->cmd.dma_addr);
+		dma_free_coherent(&card->dev->dev, STATUS_BUFFER_SIZE8,
+				  ctrl->status.buf, ctrl->status.dma_addr);
+		dma_free_coherent(&card->dev->dev, COMMAND_BUFFER_SIZE8,
+				  ctrl->cmd.buf, ctrl->cmd.dma_addr);
 	}
 }
 
@@ -1059,11 +1059,11 @@ int rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card)
 				card->ctrl[i].stats.reads_issued--;
 
 			if (dma->cmd != HW_CMD_BLK_DISCARD) {
-				pci_unmap_page(card->dev, dma->dma_addr,
+				dma_unmap_page(&card->dev->dev, dma->dma_addr,
 					       get_dma_size(dma),
 					       dma->cmd == HW_CMD_BLK_WRITE ?
-					       PCI_DMA_TODEVICE :
-					       PCI_DMA_FROMDEVICE);
+					       DMA_TO_DEVICE :
+					       DMA_FROM_DEVICE);
 			}
 
 			list_add_tail(&dma->list, &issued_dmas[i]);
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index 87b9e7fbf062..7c5fc6942f32 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -632,7 +632,7 @@ static bool skd_preop_sg_list(struct skd_device *skdev,
 	 * Map scatterlist to PCI bus addresses.
 	 * Note PCI might change the number of entries.
 	 */
-	n_sg = pci_map_sg(skdev->pdev, sgl, n_sg, skreq->data_dir);
+	n_sg = dma_map_sg(&skdev->pdev->dev, sgl, n_sg, skreq->data_dir);
 	if (n_sg <= 0)
 		return false;
 
@@ -682,7 +682,8 @@ static void skd_postop_sg_list(struct skd_device *skdev,
 	skreq->sksg_list[skreq->n_sg - 1].next_desc_ptr =
 		skreq->sksg_dma_address +
 		((skreq->n_sg) * sizeof(struct fit_sg_descriptor));
-	pci_unmap_sg(skdev->pdev, &skreq->sg[0], skreq->n_sg, skreq->data_dir);
+	dma_unmap_sg(&skdev->pdev->dev, &skreq->sg[0], skreq->n_sg,
+		     skreq->data_dir);
 }
 
 /*
@@ -1416,7 +1417,7 @@ static void skd_resolve_req_exception(struct skd_device *skdev,
 
 	case SKD_CHECK_STATUS_BUSY_IMMINENT:
 		skd_log_skreq(skdev, skreq, "retry(busy)");
-		blk_requeue_request(skdev->queue, req);
+		blk_mq_requeue_request(req, true);
 		dev_info(&skdev->pdev->dev, "drive BUSY imminent\n");
 		skdev->state = SKD_DRVR_STATE_BUSY_IMMINENT;
 		skdev->timer_countdown = SKD_TIMER_MINUTES(20);
@@ -1426,7 +1427,7 @@ static void skd_resolve_req_exception(struct skd_device *skdev,
 	case SKD_CHECK_STATUS_REQUEUE_REQUEST:
 		if ((unsigned long) ++req->special < SKD_MAX_RETRIES) {
 			skd_log_skreq(skdev, skreq, "retry");
-			blk_requeue_request(skdev->queue, req);
+			blk_mq_requeue_request(req, true);
 			break;
 		}
 		/* fall through */
@@ -2632,8 +2633,8 @@ static int skd_cons_skcomp(struct skd_device *skdev)
 		"comp pci_alloc, total bytes %zd entries %d\n",
 		SKD_SKCOMP_SIZE, SKD_N_COMPLETION_ENTRY);
 
-	skcomp = pci_zalloc_consistent(skdev->pdev, SKD_SKCOMP_SIZE,
-				       &skdev->cq_dma_address);
+	skcomp = dma_zalloc_coherent(&skdev->pdev->dev, SKD_SKCOMP_SIZE,
+				     &skdev->cq_dma_address, GFP_KERNEL);
 
 	if (skcomp == NULL) {
 		rc = -ENOMEM;
@@ -2674,10 +2675,10 @@ static int skd_cons_skmsg(struct skd_device *skdev)
 
 		skmsg->id = i + SKD_ID_FIT_MSG;
 
-		skmsg->msg_buf = pci_alloc_consistent(skdev->pdev,
-						      SKD_N_FITMSG_BYTES,
-						      &skmsg->mb_dma_address);
-
+		skmsg->msg_buf = dma_alloc_coherent(&skdev->pdev->dev,
+						    SKD_N_FITMSG_BYTES,
+						    &skmsg->mb_dma_address,
+						    GFP_KERNEL);
 		if (skmsg->msg_buf == NULL) {
 			rc = -ENOMEM;
 			goto err_out;
@@ -2971,8 +2972,8 @@ err_out:
 static void skd_free_skcomp(struct skd_device *skdev)
 {
 	if (skdev->skcomp_table)
-		pci_free_consistent(skdev->pdev, SKD_SKCOMP_SIZE,
-				    skdev->skcomp_table, skdev->cq_dma_address);
+		dma_free_coherent(&skdev->pdev->dev, SKD_SKCOMP_SIZE,
+				  skdev->skcomp_table, skdev->cq_dma_address);
 
 	skdev->skcomp_table = NULL;
 	skdev->cq_dma_address = 0;
@@ -2991,8 +2992,8 @@ static void skd_free_skmsg(struct skd_device *skdev)
 		skmsg = &skdev->skmsg_table[i];
 
 		if (skmsg->msg_buf != NULL) {
-			pci_free_consistent(skdev->pdev, SKD_N_FITMSG_BYTES,
-					    skmsg->msg_buf,
+			dma_free_coherent(&skdev->pdev->dev, SKD_N_FITMSG_BYTES,
+					  skmsg->msg_buf,
 					    skmsg->mb_dma_address);
 		}
 		skmsg->msg_buf = NULL;
@@ -3104,7 +3105,7 @@ static int skd_bdev_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 static int skd_bdev_attach(struct device *parent, struct skd_device *skdev)
 {
 	dev_dbg(&skdev->pdev->dev, "add_disk\n");
-	device_add_disk(parent, skdev->disk);
+	device_add_disk(parent, skdev->disk, NULL);
 	return 0;
 }
 
@@ -3172,18 +3173,12 @@ static int skd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	rc = pci_request_regions(pdev, DRV_NAME);
 	if (rc)
 		goto err_out;
-	rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
-	if (!rc) {
-		if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
-			dev_err(&pdev->dev, "consistent DMA mask error %d\n",
-				rc);
-		}
-	} else {
-		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (rc) {
-			dev_err(&pdev->dev, "DMA mask error %d\n", rc);
-			goto err_out_regions;
-		}
+	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (rc)
+		dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (rc) {
+		dev_err(&pdev->dev, "DMA mask error %d\n", rc);
+		goto err_out_regions;
 	}
 
 	if (!skd_major) {
@@ -3367,20 +3362,12 @@ static int skd_pci_resume(struct pci_dev *pdev)
 	rc = pci_request_regions(pdev, DRV_NAME);
 	if (rc)
 		goto err_out;
-	rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
-	if (!rc) {
-		if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
-
-			dev_err(&pdev->dev, "consistent DMA mask error %d\n",
-				rc);
-		}
-	} else {
-		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (rc) {
-
-			dev_err(&pdev->dev, "DMA mask error %d\n", rc);
-			goto err_out_regions;
-		}
+	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (rc)
+		dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (rc) {
+		dev_err(&pdev->dev, "DMA mask error %d\n", rc);
+		goto err_out_regions;
 	}
 
 	pci_set_master(pdev);
diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c
index f68e9baffad7..b54fa6726303 100644
--- a/drivers/block/sunvdc.c
+++ b/drivers/block/sunvdc.c
@@ -857,7 +857,7 @@ static int probe_disk(struct vdc_port *port)
 	       port->vdisk_size, (port->vdisk_size >> (20 - 9)),
 	       port->vio.ver.major, port->vio.ver.minor);
 
-	device_add_disk(&port->vio.vdev->dev, g);
+	device_add_disk(&port->vio.vdev->dev, g, NULL);
 
 	return 0;
 }
diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index 0e31884a9519..3fa6fcc34790 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -19,7 +19,7 @@
 #include <linux/module.h>
 #include <linux/fd.h>
 #include <linux/slab.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/mutex.h>
 #include <linux/hdreg.h>
 #include <linux/kernel.h>
@@ -190,6 +190,7 @@ struct floppy_state {
 	int		ref_count;
 
 	struct gendisk *disk;
+	struct blk_mq_tag_set tag_set;
 
 	/* parent controller */
 
@@ -211,7 +212,6 @@ enum head {
 struct swim_priv {
 	struct swim __iomem *base;
 	spinlock_t lock;
-	int fdc_queue;
 	int floppy_count;
 	struct floppy_state unit[FD_MAX_UNIT];
 };
@@ -525,58 +525,36 @@ static blk_status_t floppy_read_sectors(struct floppy_state *fs,
 	return 0;
 }
 
-static struct request *swim_next_request(struct swim_priv *swd)
+static blk_status_t swim_queue_rq(struct blk_mq_hw_ctx *hctx,
+				  const struct blk_mq_queue_data *bd)
 {
-	struct request_queue *q;
-	struct request *rq;
-	int old_pos = swd->fdc_queue;
+	struct floppy_state *fs = hctx->queue->queuedata;
+	struct swim_priv *swd = fs->swd;
+	struct request *req = bd->rq;
+	blk_status_t err;
 
-	do {
-		q = swd->unit[swd->fdc_queue].disk->queue;
-		if (++swd->fdc_queue == swd->floppy_count)
-			swd->fdc_queue = 0;
-		if (q) {
-			rq = blk_fetch_request(q);
-			if (rq)
-				return rq;
-		}
-	} while (swd->fdc_queue != old_pos);
+	if (!spin_trylock_irq(&swd->lock))
+		return BLK_STS_DEV_RESOURCE;
 
-	return NULL;
-}
+	blk_mq_start_request(req);
 
-static void do_fd_request(struct request_queue *q)
-{
-	struct swim_priv *swd = q->queuedata;
-	struct request *req;
-	struct floppy_state *fs;
+	if (!fs->disk_in || rq_data_dir(req) == WRITE) {
+		err = BLK_STS_IOERR;
+		goto out;
+	}
 
-	req = swim_next_request(swd);
-	while (req) {
-		blk_status_t err = BLK_STS_IOERR;
+	do {
+		err = floppy_read_sectors(fs, blk_rq_pos(req),
+					  blk_rq_cur_sectors(req),
+					  bio_data(req->bio));
+	} while (blk_update_request(req, err, blk_rq_cur_bytes(req)));
+	__blk_mq_end_request(req, err);
 
-		fs = req->rq_disk->private_data;
-		if (blk_rq_pos(req) >= fs->total_secs)
-			goto done;
-		if (!fs->disk_in)
-			goto done;
-		if (rq_data_dir(req) == WRITE && fs->write_protected)
-			goto done;
+	err = BLK_STS_OK;
+out:
+	spin_unlock_irq(&swd->lock);
+	return err;
 
-		switch (rq_data_dir(req)) {
-		case WRITE:
-			/* NOT IMPLEMENTED */
-			break;
-		case READ:
-			err = floppy_read_sectors(fs, blk_rq_pos(req),
-						  blk_rq_cur_sectors(req),
-						  bio_data(req->bio));
-			break;
-		}
-	done:
-		if (!__blk_end_request_cur(req, err))
-			req = swim_next_request(swd);
-	}
 }
 
 static struct floppy_struct floppy_type[4] = {
@@ -823,6 +801,10 @@ static int swim_add_floppy(struct swim_priv *swd, enum drive_location location)
 	return 0;
 }
 
+static const struct blk_mq_ops swim_mq_ops = {
+	.queue_rq = swim_queue_rq,
+};
+
 static int swim_floppy_init(struct swim_priv *swd)
 {
 	int err;
@@ -852,20 +834,25 @@ static int swim_floppy_init(struct swim_priv *swd)
 	spin_lock_init(&swd->lock);
 
 	for (drive = 0; drive < swd->floppy_count; drive++) {
+		struct request_queue *q;
+
 		swd->unit[drive].disk = alloc_disk(1);
 		if (swd->unit[drive].disk == NULL) {
 			err = -ENOMEM;
 			goto exit_put_disks;
 		}
-		swd->unit[drive].disk->queue = blk_init_queue(do_fd_request,
-							      &swd->lock);
-		if (!swd->unit[drive].disk->queue) {
-			err = -ENOMEM;
+
+		q = blk_mq_init_sq_queue(&swd->unit[drive].tag_set, &swim_mq_ops,
+						2, BLK_MQ_F_SHOULD_MERGE);
+		if (IS_ERR(q)) {
+			err = PTR_ERR(q);
 			goto exit_put_disks;
 		}
+
+		swd->unit[drive].disk->queue = q;
 		blk_queue_bounce_limit(swd->unit[drive].disk->queue,
 				BLK_BOUNCE_HIGH);
-		swd->unit[drive].disk->queue->queuedata = swd;
+		swd->unit[drive].disk->queue->queuedata = &swd->unit[drive];
 		swd->unit[drive].swd = swd;
 	}
 
@@ -887,8 +874,18 @@ static int swim_floppy_init(struct swim_priv *swd)
 
 exit_put_disks:
 	unregister_blkdev(FLOPPY_MAJOR, "fd");
-	while (drive--)
-		put_disk(swd->unit[drive].disk);
+	do {
+		struct gendisk *disk = swd->unit[drive].disk;
+
+		if (disk) {
+			if (disk->queue) {
+				blk_cleanup_queue(disk->queue);
+				disk->queue = NULL;
+			}
+			blk_mq_free_tag_set(&swd->unit[drive].tag_set);
+			put_disk(disk);
+		}
+	} while (drive--);
 	return err;
 }
 
@@ -961,6 +958,7 @@ static int swim_remove(struct platform_device *dev)
 	for (drive = 0; drive < swd->floppy_count; drive++) {
 		del_gendisk(swd->unit[drive].disk);
 		blk_cleanup_queue(swd->unit[drive].disk->queue);
+		blk_mq_free_tag_set(&swd->unit[drive].tag_set);
 		put_disk(swd->unit[drive].disk);
 	}
 
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index 469541c1e51e..c1c676a33e4a 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -25,7 +25,7 @@
 #include <linux/delay.h>
 #include <linux/fd.h>
 #include <linux/ioctl.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/interrupt.h>
 #include <linux/mutex.h>
 #include <linux/module.h>
@@ -206,6 +206,7 @@ struct floppy_state {
 	char	dbdma_cmd_space[5 * sizeof(struct dbdma_cmd)];
 	int	index;
 	struct request *cur_req;
+	struct blk_mq_tag_set tag_set;
 };
 
 #define swim3_err(fmt, arg...)	dev_err(&fs->mdev->ofdev.dev, "[fd%d] " fmt, fs->index, arg)
@@ -260,16 +261,15 @@ static int floppy_revalidate(struct gendisk *disk);
 static bool swim3_end_request(struct floppy_state *fs, blk_status_t err, unsigned int nr_bytes)
 {
 	struct request *req = fs->cur_req;
-	int rc;
 
 	swim3_dbg("  end request, err=%d nr_bytes=%d, cur_req=%p\n",
 		  err, nr_bytes, req);
 
 	if (err)
 		nr_bytes = blk_rq_cur_bytes(req);
-	rc = __blk_end_request(req, err, nr_bytes);
-	if (rc)
+	if (blk_update_request(req, err, nr_bytes))
 		return true;
+	__blk_mq_end_request(req, err);
 	fs->cur_req = NULL;
 	return false;
 }
@@ -309,86 +309,58 @@ static int swim3_readbit(struct floppy_state *fs, int bit)
 	return (stat & DATA) == 0;
 }
 
-static void start_request(struct floppy_state *fs)
+static blk_status_t swim3_queue_rq(struct blk_mq_hw_ctx *hctx,
+				   const struct blk_mq_queue_data *bd)
 {
-	struct request *req;
+	struct floppy_state *fs = hctx->queue->queuedata;
+	struct request *req = bd->rq;
 	unsigned long x;
 
-	swim3_dbg("start request, initial state=%d\n", fs->state);
-
-	if (fs->state == idle && fs->wanted) {
-		fs->state = available;
-		wake_up(&fs->wait);
-		return;
+	spin_lock_irq(&swim3_lock);
+	if (fs->cur_req || fs->state != idle) {
+		spin_unlock_irq(&swim3_lock);
+		return BLK_STS_DEV_RESOURCE;
 	}
-	while (fs->state == idle) {
-		swim3_dbg("start request, idle loop, cur_req=%p\n", fs->cur_req);
-		if (!fs->cur_req) {
-			fs->cur_req = blk_fetch_request(disks[fs->index]->queue);
-			swim3_dbg("  fetched request %p\n", fs->cur_req);
-			if (!fs->cur_req)
-				break;
-		}
-		req = fs->cur_req;
-
-		if (fs->mdev->media_bay &&
-		    check_media_bay(fs->mdev->media_bay) != MB_FD) {
-			swim3_dbg("%s", "  media bay absent, dropping req\n");
-			swim3_end_request(fs, BLK_STS_IOERR, 0);
-			continue;
-		}
-
-#if 0 /* This is really too verbose */
-		swim3_dbg("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%u buf=%p\n",
-			  req->rq_disk->disk_name, req->cmd,
-			  (long)blk_rq_pos(req), blk_rq_sectors(req),
-			  bio_data(req->bio));
-		swim3_dbg("           current_nr_sectors=%u\n",
-			  blk_rq_cur_sectors(req));
-#endif
-
-		if (blk_rq_pos(req) >= fs->total_secs) {
-			swim3_dbg("  pos out of bounds (%ld, max is %ld)\n",
-				  (long)blk_rq_pos(req), (long)fs->total_secs);
-			swim3_end_request(fs, BLK_STS_IOERR, 0);
-			continue;
-		}
-		if (fs->ejected) {
-			swim3_dbg("%s", "  disk ejected\n");
+	blk_mq_start_request(req);
+	fs->cur_req = req;
+	if (fs->mdev->media_bay &&
+	    check_media_bay(fs->mdev->media_bay) != MB_FD) {
+		swim3_dbg("%s", "  media bay absent, dropping req\n");
+		swim3_end_request(fs, BLK_STS_IOERR, 0);
+		goto out;
+	}
+	if (fs->ejected) {
+		swim3_dbg("%s", "  disk ejected\n");
+		swim3_end_request(fs, BLK_STS_IOERR, 0);
+		goto out;
+	}
+	if (rq_data_dir(req) == WRITE) {
+		if (fs->write_prot < 0)
+			fs->write_prot = swim3_readbit(fs, WRITE_PROT);
+		if (fs->write_prot) {
+			swim3_dbg("%s", "  try to write, disk write protected\n");
 			swim3_end_request(fs, BLK_STS_IOERR, 0);
-			continue;
+			goto out;
 		}
-
-		if (rq_data_dir(req) == WRITE) {
-			if (fs->write_prot < 0)
-				fs->write_prot = swim3_readbit(fs, WRITE_PROT);
-			if (fs->write_prot) {
-				swim3_dbg("%s", "  try to write, disk write protected\n");
-				swim3_end_request(fs, BLK_STS_IOERR, 0);
-				continue;
-			}
-		}
-
-		/* Do not remove the cast. blk_rq_pos(req) is now a
-		 * sector_t and can be 64 bits, but it will never go
-		 * past 32 bits for this driver anyway, so we can
-		 * safely cast it down and not have to do a 64/32
-		 * division
-		 */
-		fs->req_cyl = ((long)blk_rq_pos(req)) / fs->secpercyl;
-		x = ((long)blk_rq_pos(req)) % fs->secpercyl;
-		fs->head = x / fs->secpertrack;
-		fs->req_sector = x % fs->secpertrack + 1;
-		fs->state = do_transfer;
-		fs->retries = 0;
-
-		act(fs);
 	}
-}
 
-static void do_fd_request(struct request_queue * q)
-{
-	start_request(q->queuedata);
+	/*
+	 * Do not remove the cast. blk_rq_pos(req) is now a sector_t and can be
+	 * 64 bits, but it will never go past 32 bits for this driver anyway, so
+	 * we can safely cast it down and not have to do a 64/32 division
+	 */
+	fs->req_cyl = ((long)blk_rq_pos(req)) / fs->secpercyl;
+	x = ((long)blk_rq_pos(req)) % fs->secpercyl;
+	fs->head = x / fs->secpertrack;
+	fs->req_sector = x % fs->secpertrack + 1;
+	fs->state = do_transfer;
+	fs->retries = 0;
+
+	act(fs);
+
+out:
+	spin_unlock_irq(&swim3_lock);
+	return BLK_STS_OK;
 }
 
 static void set_timeout(struct floppy_state *fs, int nticks,
@@ -585,7 +557,6 @@ static void scan_timeout(struct timer_list *t)
 	if (fs->retries > 5) {
 		swim3_end_request(fs, BLK_STS_IOERR, 0);
 		fs->state = idle;
-		start_request(fs);
 	} else {
 		fs->state = jogging;
 		act(fs);
@@ -609,7 +580,6 @@ static void seek_timeout(struct timer_list *t)
 	swim3_err("%s", "Seek timeout\n");
 	swim3_end_request(fs, BLK_STS_IOERR, 0);
 	fs->state = idle;
-	start_request(fs);
 	spin_unlock_irqrestore(&swim3_lock, flags);
 }
 
@@ -638,7 +608,6 @@ static void settle_timeout(struct timer_list *t)
 	swim3_err("%s", "Seek settle timeout\n");
 	swim3_end_request(fs, BLK_STS_IOERR, 0);
 	fs->state = idle;
-	start_request(fs);
  unlock:
 	spin_unlock_irqrestore(&swim3_lock, flags);
 }
@@ -667,7 +636,6 @@ static void xfer_timeout(struct timer_list *t)
 	       (long)blk_rq_pos(fs->cur_req));
 	swim3_end_request(fs, BLK_STS_IOERR, 0);
 	fs->state = idle;
-	start_request(fs);
 	spin_unlock_irqrestore(&swim3_lock, flags);
 }
 
@@ -704,7 +672,6 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id)
 				if (fs->retries > 5) {
 					swim3_end_request(fs, BLK_STS_IOERR, 0);
 					fs->state = idle;
-					start_request(fs);
 				} else {
 					fs->state = jogging;
 					act(fs);
@@ -796,7 +763,6 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id)
 					  fs->state, rq_data_dir(req), intr, err);
 				swim3_end_request(fs, BLK_STS_IOERR, 0);
 				fs->state = idle;
-				start_request(fs);
 				break;
 			}
 			fs->retries = 0;
@@ -813,8 +779,6 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id)
 			} else
 				fs->state = idle;
 		}
-		if (fs->state == idle)
-			start_request(fs);
 		break;
 	default:
 		swim3_err("Don't know what to do in state %d\n", fs->state);
@@ -862,14 +826,19 @@ static int grab_drive(struct floppy_state *fs, enum swim_state state,
 
 static void release_drive(struct floppy_state *fs)
 {
+	struct request_queue *q = disks[fs->index]->queue;
 	unsigned long flags;
 
 	swim3_dbg("%s", "-> release drive\n");
 
 	spin_lock_irqsave(&swim3_lock, flags);
 	fs->state = idle;
-	start_request(fs);
 	spin_unlock_irqrestore(&swim3_lock, flags);
+
+	blk_mq_freeze_queue(q);
+	blk_mq_quiesce_queue(q);
+	blk_mq_unquiesce_queue(q);
+	blk_mq_unfreeze_queue(q);
 }
 
 static int fd_eject(struct floppy_state *fs)
@@ -1089,6 +1058,10 @@ static const struct block_device_operations floppy_fops = {
 	.revalidate_disk= floppy_revalidate,
 };
 
+static const struct blk_mq_ops swim3_mq_ops = {
+	.queue_rq = swim3_queue_rq,
+};
+
 static void swim3_mb_event(struct macio_dev* mdev, int mb_state)
 {
 	struct floppy_state *fs = macio_get_drvdata(mdev);
@@ -1202,47 +1175,63 @@ static int swim3_add_device(struct macio_dev *mdev, int index)
 static int swim3_attach(struct macio_dev *mdev,
 			const struct of_device_id *match)
 {
+	struct floppy_state *fs;
 	struct gendisk *disk;
-	int index, rc;
+	int rc;
 
-	index = floppy_count++;
-	if (index >= MAX_FLOPPIES)
+	if (floppy_count >= MAX_FLOPPIES)
 		return -ENXIO;
 
-	/* Add the drive */
-	rc = swim3_add_device(mdev, index);
-	if (rc)
-		return rc;
-	/* Now register that disk. Same comment about failure handling */
-	disk = disks[index] = alloc_disk(1);
-	if (disk == NULL)
-		return -ENOMEM;
-	disk->queue = blk_init_queue(do_fd_request, &swim3_lock);
-	if (disk->queue == NULL) {
-		put_disk(disk);
-		return -ENOMEM;
+	if (floppy_count == 0) {
+		rc = register_blkdev(FLOPPY_MAJOR, "fd");
+		if (rc)
+			return rc;
 	}
-	blk_queue_bounce_limit(disk->queue, BLK_BOUNCE_HIGH);
-	disk->queue->queuedata = &floppy_states[index];
 
-	if (index == 0) {
-		/* If we failed, there isn't much we can do as the driver is still
-		 * too dumb to remove the device, just bail out
-		 */
-		if (register_blkdev(FLOPPY_MAJOR, "fd"))
-			return 0;
+	fs = &floppy_states[floppy_count];
+
+	disk = alloc_disk(1);
+	if (disk == NULL) {
+		rc = -ENOMEM;
+		goto out_unregister;
+	}
+
+	disk->queue = blk_mq_init_sq_queue(&fs->tag_set, &swim3_mq_ops, 2,
+						BLK_MQ_F_SHOULD_MERGE);
+	if (IS_ERR(disk->queue)) {
+		rc = PTR_ERR(disk->queue);
+		disk->queue = NULL;
+		goto out_put_disk;
 	}
+	blk_queue_bounce_limit(disk->queue, BLK_BOUNCE_HIGH);
+	disk->queue->queuedata = fs;
+
+	rc = swim3_add_device(mdev, floppy_count);
+	if (rc)
+		goto out_cleanup_queue;
 
 	disk->major = FLOPPY_MAJOR;
-	disk->first_minor = index;
+	disk->first_minor = floppy_count;
 	disk->fops = &floppy_fops;
-	disk->private_data = &floppy_states[index];
+	disk->private_data = fs;
 	disk->flags |= GENHD_FL_REMOVABLE;
-	sprintf(disk->disk_name, "fd%d", index);
+	sprintf(disk->disk_name, "fd%d", floppy_count);
 	set_capacity(disk, 2880);
 	add_disk(disk);
 
+	disks[floppy_count++] = disk;
 	return 0;
+
+out_cleanup_queue:
+	blk_cleanup_queue(disk->queue);
+	disk->queue = NULL;
+	blk_mq_free_tag_set(&fs->tag_set);
+out_put_disk:
+	put_disk(disk);
+out_unregister:
+	if (floppy_count == 0)
+		unregister_blkdev(FLOPPY_MAJOR, "fd");
+	return rc;
 }
 
 static const struct of_device_id swim3_match[] =
diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c
index 4d90e5eba2f5..064b8c5c7a32 100644
--- a/drivers/block/sx8.c
+++ b/drivers/block/sx8.c
@@ -16,7 +16,7 @@
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/compiler.h>
@@ -197,7 +197,6 @@ enum {
 	FL_NON_RAID		= FW_VER_NON_RAID,
 	FL_4PORT		= FW_VER_4PORT,
 	FL_FW_VER_MASK		= (FW_VER_NON_RAID | FW_VER_4PORT),
-	FL_DAC			= (1 << 16),
 	FL_DYN_MAJOR		= (1 << 17),
 };
 
@@ -244,6 +243,7 @@ struct carm_port {
 	unsigned int			port_no;
 	struct gendisk			*disk;
 	struct carm_host		*host;
+	struct blk_mq_tag_set		tag_set;
 
 	/* attached device characteristics */
 	u64				capacity;
@@ -279,6 +279,7 @@ struct carm_host {
 	unsigned int			state;
 	u32				fw_ver;
 
+	struct blk_mq_tag_set		tag_set;
 	struct request_queue		*oob_q;
 	unsigned int			n_oob;
 
@@ -750,7 +751,7 @@ static inline void carm_end_request_queued(struct carm_host *host,
 	struct request *req = crq->rq;
 	int rc;
 
-	__blk_end_request_all(req, error);
+	blk_mq_end_request(req, error);
 
 	rc = carm_put_request(host, crq);
 	assert(rc == 0);
@@ -760,7 +761,7 @@ static inline void carm_push_q (struct carm_host *host, struct request_queue *q)
 {
 	unsigned int idx = host->wait_q_prod % CARM_MAX_WAIT_Q;
 
-	blk_stop_queue(q);
+	blk_mq_stop_hw_queues(q);
 	VPRINTK("STOPPED QUEUE %p\n", q);
 
 	host->wait_q[idx] = q;
@@ -785,7 +786,7 @@ static inline void carm_round_robin(struct carm_host *host)
 {
 	struct request_queue *q = carm_pop_q(host);
 	if (q) {
-		blk_start_queue(q);
+		blk_mq_start_hw_queues(q);
 		VPRINTK("STARTED QUEUE %p\n", q);
 	}
 }
@@ -802,82 +803,86 @@ static inline void carm_end_rq(struct carm_host *host, struct carm_request *crq,
 	}
 }
 
-static void carm_oob_rq_fn(struct request_queue *q)
+static blk_status_t carm_oob_queue_rq(struct blk_mq_hw_ctx *hctx,
+				      const struct blk_mq_queue_data *bd)
 {
+	struct request_queue *q = hctx->queue;
 	struct carm_host *host = q->queuedata;
 	struct carm_request *crq;
-	struct request *rq;
 	int rc;
 
-	while (1) {
-		DPRINTK("get req\n");
-		rq = blk_fetch_request(q);
-		if (!rq)
-			break;
+	blk_mq_start_request(bd->rq);
 
-		crq = rq->special;
-		assert(crq != NULL);
-		assert(crq->rq == rq);
+	spin_lock_irq(&host->lock);
 
-		crq->n_elem = 0;
+	crq = bd->rq->special;
+	assert(crq != NULL);
+	assert(crq->rq == bd->rq);
 
-		DPRINTK("send req\n");
-		rc = carm_send_msg(host, crq);
-		if (rc) {
-			blk_requeue_request(q, rq);
-			carm_push_q(host, q);
-			return;		/* call us again later, eventually */
-		}
+	crq->n_elem = 0;
+
+	DPRINTK("send req\n");
+	rc = carm_send_msg(host, crq);
+	if (rc) {
+		carm_push_q(host, q);
+		spin_unlock_irq(&host->lock);
+		return BLK_STS_DEV_RESOURCE;
 	}
+
+	spin_unlock_irq(&host->lock);
+	return BLK_STS_OK;
 }
 
-static void carm_rq_fn(struct request_queue *q)
+static blk_status_t carm_queue_rq(struct blk_mq_hw_ctx *hctx,
+				  const struct blk_mq_queue_data *bd)
 {
+	struct request_queue *q = hctx->queue;
 	struct carm_port *port = q->queuedata;
 	struct carm_host *host = port->host;
 	struct carm_msg_rw *msg;
 	struct carm_request *crq;
-	struct request *rq;
+	struct request *rq = bd->rq;
 	struct scatterlist *sg;
 	int writing = 0, pci_dir, i, n_elem, rc;
 	u32 tmp;
 	unsigned int msg_size;
 
-queue_one_request:
-	VPRINTK("get req\n");
-	rq = blk_peek_request(q);
-	if (!rq)
-		return;
+	blk_mq_start_request(rq);
+
+	spin_lock_irq(&host->lock);
 
 	crq = carm_get_request(host);
 	if (!crq) {
 		carm_push_q(host, q);
-		return;		/* call us again later, eventually */
+		spin_unlock_irq(&host->lock);
+		return BLK_STS_DEV_RESOURCE;
 	}
 	crq->rq = rq;
 
-	blk_start_request(rq);
-
 	if (rq_data_dir(rq) == WRITE) {
 		writing = 1;
-		pci_dir = PCI_DMA_TODEVICE;
+		pci_dir = DMA_TO_DEVICE;
 	} else {
-		pci_dir = PCI_DMA_FROMDEVICE;
+		pci_dir = DMA_FROM_DEVICE;
 	}
 
 	/* get scatterlist from block layer */
 	sg = &crq->sg[0];
 	n_elem = blk_rq_map_sg(q, rq, sg);
 	if (n_elem <= 0) {
+		/* request with no s/g entries? */
 		carm_end_rq(host, crq, BLK_STS_IOERR);
-		return;		/* request with no s/g entries? */
+		spin_unlock_irq(&host->lock);
+		return BLK_STS_IOERR;
 	}
 
 	/* map scatterlist to PCI bus addresses */
-	n_elem = pci_map_sg(host->pdev, sg, n_elem, pci_dir);
+	n_elem = dma_map_sg(&host->pdev->dev, sg, n_elem, pci_dir);
 	if (n_elem <= 0) {
+		/* request with no s/g entries? */
 		carm_end_rq(host, crq, BLK_STS_IOERR);
-		return;		/* request with no s/g entries? */
+		spin_unlock_irq(&host->lock);
+		return BLK_STS_IOERR;
 	}
 	crq->n_elem = n_elem;
 	crq->port = port;
@@ -927,12 +932,13 @@ queue_one_request:
 	rc = carm_send_msg(host, crq);
 	if (rc) {
 		carm_put_request(host, crq);
-		blk_requeue_request(q, rq);
 		carm_push_q(host, q);
-		return;		/* call us again later, eventually */
+		spin_unlock_irq(&host->lock);
+		return BLK_STS_DEV_RESOURCE;
 	}
 
-	goto queue_one_request;
+	spin_unlock_irq(&host->lock);
+	return BLK_STS_OK;
 }
 
 static void carm_handle_array_info(struct carm_host *host,
@@ -1052,11 +1058,11 @@ static inline void carm_handle_rw(struct carm_host *host,
 	VPRINTK("ENTER\n");
 
 	if (rq_data_dir(crq->rq) == WRITE)
-		pci_dir = PCI_DMA_TODEVICE;
+		pci_dir = DMA_TO_DEVICE;
 	else
-		pci_dir = PCI_DMA_FROMDEVICE;
+		pci_dir = DMA_FROM_DEVICE;
 
-	pci_unmap_sg(host->pdev, &crq->sg[0], crq->n_elem, pci_dir);
+	dma_unmap_sg(&host->pdev->dev, &crq->sg[0], crq->n_elem, pci_dir);
 
 	carm_end_rq(host, crq, error);
 }
@@ -1485,6 +1491,14 @@ static int carm_init_host(struct carm_host *host)
 	return 0;
 }
 
+static const struct blk_mq_ops carm_oob_mq_ops = {
+	.queue_rq	= carm_oob_queue_rq,
+};
+
+static const struct blk_mq_ops carm_mq_ops = {
+	.queue_rq	= carm_queue_rq,
+};
+
 static int carm_init_disks(struct carm_host *host)
 {
 	unsigned int i;
@@ -1513,9 +1527,10 @@ static int carm_init_disks(struct carm_host *host)
 		disk->fops = &carm_bd_ops;
 		disk->private_data = port;
 
-		q = blk_init_queue(carm_rq_fn, &host->lock);
-		if (!q) {
-			rc = -ENOMEM;
+		q = blk_mq_init_sq_queue(&port->tag_set, &carm_mq_ops,
+					 max_queue, BLK_MQ_F_SHOULD_MERGE);
+		if (IS_ERR(q)) {
+			rc = PTR_ERR(q);
 			break;
 		}
 		disk->queue = q;
@@ -1533,14 +1548,18 @@ static void carm_free_disks(struct carm_host *host)
 	unsigned int i;
 
 	for (i = 0; i < CARM_MAX_PORTS; i++) {
-		struct gendisk *disk = host->port[i].disk;
+		struct carm_port *port = &host->port[i];
+		struct gendisk *disk = port->disk;
+
 		if (disk) {
 			struct request_queue *q = disk->queue;
 
 			if (disk->flags & GENHD_FL_UP)
 				del_gendisk(disk);
-			if (q)
+			if (q) {
+				blk_mq_free_tag_set(&port->tag_set);
 				blk_cleanup_queue(q);
+			}
 			put_disk(disk);
 		}
 	}
@@ -1548,8 +1567,8 @@ static void carm_free_disks(struct carm_host *host)
 
 static int carm_init_shm(struct carm_host *host)
 {
-	host->shm = pci_alloc_consistent(host->pdev, CARM_SHM_SIZE,
-					 &host->shm_dma);
+	host->shm = dma_alloc_coherent(&host->pdev->dev, CARM_SHM_SIZE,
+				       &host->shm_dma, GFP_KERNEL);
 	if (!host->shm)
 		return -ENOMEM;
 
@@ -1565,7 +1584,6 @@ static int carm_init_shm(struct carm_host *host)
 static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	struct carm_host *host;
-	unsigned int pci_dac;
 	int rc;
 	struct request_queue *q;
 	unsigned int i;
@@ -1580,28 +1598,12 @@ static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (rc)
 		goto err_out;
 
-#ifdef IF_64BIT_DMA_IS_POSSIBLE /* grrrr... */
-	rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
-	if (!rc) {
-		rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
-		if (rc) {
-			printk(KERN_ERR DRV_NAME "(%s): consistent DMA mask failure\n",
-				pci_name(pdev));
-			goto err_out_regions;
-		}
-		pci_dac = 1;
-	} else {
-#endif
-		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
-		if (rc) {
-			printk(KERN_ERR DRV_NAME "(%s): DMA mask failure\n",
-				pci_name(pdev));
-			goto err_out_regions;
-		}
-		pci_dac = 0;
-#ifdef IF_64BIT_DMA_IS_POSSIBLE /* grrrr... */
+	rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+	if (rc) {
+		printk(KERN_ERR DRV_NAME "(%s): DMA mask failure\n",
+			pci_name(pdev));
+		goto err_out_regions;
 	}
-#endif
 
 	host = kzalloc(sizeof(*host), GFP_KERNEL);
 	if (!host) {
@@ -1612,7 +1614,6 @@ static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	}
 
 	host->pdev = pdev;
-	host->flags = pci_dac ? FL_DAC : 0;
 	spin_lock_init(&host->lock);
 	INIT_WORK(&host->fsm_task, carm_fsm_task);
 	init_completion(&host->probe_comp);
@@ -1636,12 +1637,13 @@ static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 		goto err_out_iounmap;
 	}
 
-	q = blk_init_queue(carm_oob_rq_fn, &host->lock);
-	if (!q) {
+	q = blk_mq_init_sq_queue(&host->tag_set, &carm_oob_mq_ops, 1,
+					BLK_MQ_F_NO_SCHED);
+	if (IS_ERR(q)) {
 		printk(KERN_ERR DRV_NAME "(%s): OOB queue alloc failure\n",
 		       pci_name(pdev));
-		rc = -ENOMEM;
-		goto err_out_pci_free;
+		rc = PTR_ERR(q);
+		goto err_out_dma_free;
 	}
 	host->oob_q = q;
 	q->queuedata = host;
@@ -1705,8 +1707,9 @@ err_out_free_majors:
 	else if (host->major == 161)
 		clear_bit(1, &carm_major_alloc);
 	blk_cleanup_queue(host->oob_q);
-err_out_pci_free:
-	pci_free_consistent(pdev, CARM_SHM_SIZE, host->shm, host->shm_dma);
+	blk_mq_free_tag_set(&host->tag_set);
+err_out_dma_free:
+	dma_free_coherent(&pdev->dev, CARM_SHM_SIZE, host->shm, host->shm_dma);
 err_out_iounmap:
 	iounmap(host->mmio);
 err_out_kfree:
@@ -1736,7 +1739,8 @@ static void carm_remove_one (struct pci_dev *pdev)
 	else if (host->major == 161)
 		clear_bit(1, &carm_major_alloc);
 	blk_cleanup_queue(host->oob_q);
-	pci_free_consistent(pdev, CARM_SHM_SIZE, host->shm, host->shm_dma);
+	blk_mq_free_tag_set(&host->tag_set);
+	dma_free_coherent(&pdev->dev, CARM_SHM_SIZE, host->shm, host->shm_dma);
 	iounmap(host->mmio);
 	kfree(host);
 	pci_release_regions(pdev);
diff --git a/drivers/block/umem.c b/drivers/block/umem.c
index 5c7fb8cc4149..be3e3ab79950 100644
--- a/drivers/block/umem.c
+++ b/drivers/block/umem.c
@@ -363,12 +363,12 @@ static int add_bio(struct cardinfo *card)
 
 	vec = bio_iter_iovec(bio, card->current_iter);
 
-	dma_handle = pci_map_page(card->dev,
+	dma_handle = dma_map_page(&card->dev->dev,
 				  vec.bv_page,
 				  vec.bv_offset,
 				  vec.bv_len,
 				  bio_op(bio) == REQ_OP_READ ?
-				  PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
+				  DMA_FROM_DEVICE : DMA_TO_DEVICE);
 
 	p = &card->mm_pages[card->Ready];
 	desc = &p->desc[p->cnt];
@@ -421,7 +421,7 @@ static void process_page(unsigned long data)
 	struct cardinfo *card = (struct cardinfo *)data;
 	unsigned int dma_status = card->dma_status;
 
-	spin_lock_bh(&card->lock);
+	spin_lock(&card->lock);
 	if (card->Active < 0)
 		goto out_unlock;
 	page = &card->mm_pages[card->Active];
@@ -448,10 +448,10 @@ static void process_page(unsigned long data)
 				page->iter = page->bio->bi_iter;
 		}
 
-		pci_unmap_page(card->dev, desc->data_dma_handle,
+		dma_unmap_page(&card->dev->dev, desc->data_dma_handle,
 			       vec.bv_len,
 				 (control & DMASCR_TRANSFER_READ) ?
-				PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
+				DMA_TO_DEVICE : DMA_FROM_DEVICE);
 		if (control & DMASCR_HARD_ERROR) {
 			/* error */
 			bio->bi_status = BLK_STS_IOERR;
@@ -496,7 +496,7 @@ static void process_page(unsigned long data)
 		mm_start_io(card);
 	}
  out_unlock:
-	spin_unlock_bh(&card->lock);
+	spin_unlock(&card->lock);
 
 	while (return_bio) {
 		struct bio *bio = return_bio;
@@ -817,8 +817,8 @@ static int mm_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	dev_printk(KERN_INFO, &dev->dev,
 	  "Micro Memory(tm) controller found (PCI Mem Module (Battery Backup))\n");
 
-	if (pci_set_dma_mask(dev, DMA_BIT_MASK(64)) &&
-	    pci_set_dma_mask(dev, DMA_BIT_MASK(32))) {
+	if (dma_set_mask(&dev->dev, DMA_BIT_MASK(64)) &&
+	    dma_set_mask(&dev->dev, DMA_BIT_MASK(32))) {
 		dev_printk(KERN_WARNING, &dev->dev, "NO suitable DMA found\n");
 		return  -ENOMEM;
 	}
@@ -871,12 +871,10 @@ static int mm_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 		goto failed_magic;
 	}
 
-	card->mm_pages[0].desc = pci_alloc_consistent(card->dev,
-						PAGE_SIZE * 2,
-						&card->mm_pages[0].page_dma);
-	card->mm_pages[1].desc = pci_alloc_consistent(card->dev,
-						PAGE_SIZE * 2,
-						&card->mm_pages[1].page_dma);
+	card->mm_pages[0].desc = dma_alloc_coherent(&card->dev->dev,
+			PAGE_SIZE * 2, &card->mm_pages[0].page_dma, GFP_KERNEL);
+	card->mm_pages[1].desc = dma_alloc_coherent(&card->dev->dev,
+			PAGE_SIZE * 2, &card->mm_pages[1].page_dma, GFP_KERNEL);
 	if (card->mm_pages[0].desc == NULL ||
 	    card->mm_pages[1].desc == NULL) {
 		dev_printk(KERN_ERR, &card->dev->dev, "alloc failed\n");
@@ -1002,13 +1000,13 @@ static int mm_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
  failed_req_irq:
  failed_alloc:
 	if (card->mm_pages[0].desc)
-		pci_free_consistent(card->dev, PAGE_SIZE*2,
-				    card->mm_pages[0].desc,
-				    card->mm_pages[0].page_dma);
+		dma_free_coherent(&card->dev->dev, PAGE_SIZE * 2,
+				  card->mm_pages[0].desc,
+				  card->mm_pages[0].page_dma);
 	if (card->mm_pages[1].desc)
-		pci_free_consistent(card->dev, PAGE_SIZE*2,
-				    card->mm_pages[1].desc,
-				    card->mm_pages[1].page_dma);
+		dma_free_coherent(&card->dev->dev, PAGE_SIZE * 2,
+				  card->mm_pages[1].desc,
+				  card->mm_pages[1].page_dma);
  failed_magic:
 	iounmap(card->csr_remap);
  failed_remap_csr:
@@ -1027,11 +1025,11 @@ static void mm_pci_remove(struct pci_dev *dev)
 	iounmap(card->csr_remap);
 
 	if (card->mm_pages[0].desc)
-		pci_free_consistent(card->dev, PAGE_SIZE*2,
+		dma_free_coherent(&card->dev->dev, PAGE_SIZE * 2,
 				    card->mm_pages[0].desc,
 				    card->mm_pages[0].page_dma);
 	if (card->mm_pages[1].desc)
-		pci_free_consistent(card->dev, PAGE_SIZE*2,
+		dma_free_coherent(&card->dev->dev, PAGE_SIZE * 2,
 				    card->mm_pages[1].desc,
 				    card->mm_pages[1].page_dma);
 	blk_cleanup_queue(card->queue);
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 23752dc99b00..086c6bb12baa 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -351,8 +351,8 @@ static int minor_to_index(int minor)
 	return minor >> PART_BITS;
 }
 
-static ssize_t virtblk_serial_show(struct device *dev,
-				struct device_attribute *attr, char *buf)
+static ssize_t serial_show(struct device *dev,
+			   struct device_attribute *attr, char *buf)
 {
 	struct gendisk *disk = dev_to_disk(dev);
 	int err;
@@ -371,7 +371,7 @@ static ssize_t virtblk_serial_show(struct device *dev,
 	return err;
 }
 
-static DEVICE_ATTR(serial, 0444, virtblk_serial_show, NULL);
+static DEVICE_ATTR_RO(serial);
 
 /* The queue's logical block size must be set before calling this */
 static void virtblk_update_capacity(struct virtio_blk *vblk, bool resize)
@@ -545,8 +545,8 @@ static const char *const virtblk_cache_types[] = {
 };
 
 static ssize_t
-virtblk_cache_type_store(struct device *dev, struct device_attribute *attr,
-			 const char *buf, size_t count)
+cache_type_store(struct device *dev, struct device_attribute *attr,
+		 const char *buf, size_t count)
 {
 	struct gendisk *disk = dev_to_disk(dev);
 	struct virtio_blk *vblk = disk->private_data;
@@ -564,8 +564,7 @@ virtblk_cache_type_store(struct device *dev, struct device_attribute *attr,
 }
 
 static ssize_t
-virtblk_cache_type_show(struct device *dev, struct device_attribute *attr,
-			 char *buf)
+cache_type_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct gendisk *disk = dev_to_disk(dev);
 	struct virtio_blk *vblk = disk->private_data;
@@ -575,12 +574,38 @@ virtblk_cache_type_show(struct device *dev, struct device_attribute *attr,
 	return snprintf(buf, 40, "%s\n", virtblk_cache_types[writeback]);
 }
 
-static const struct device_attribute dev_attr_cache_type_ro =
-	__ATTR(cache_type, 0444,
-	       virtblk_cache_type_show, NULL);
-static const struct device_attribute dev_attr_cache_type_rw =
-	__ATTR(cache_type, 0644,
-	       virtblk_cache_type_show, virtblk_cache_type_store);
+static DEVICE_ATTR_RW(cache_type);
+
+static struct attribute *virtblk_attrs[] = {
+	&dev_attr_serial.attr,
+	&dev_attr_cache_type.attr,
+	NULL,
+};
+
+static umode_t virtblk_attrs_are_visible(struct kobject *kobj,
+		struct attribute *a, int n)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct gendisk *disk = dev_to_disk(dev);
+	struct virtio_blk *vblk = disk->private_data;
+	struct virtio_device *vdev = vblk->vdev;
+
+	if (a == &dev_attr_cache_type.attr &&
+	    !virtio_has_feature(vdev, VIRTIO_BLK_F_CONFIG_WCE))
+		return S_IRUGO;
+
+	return a->mode;
+}
+
+static const struct attribute_group virtblk_attr_group = {
+	.attrs = virtblk_attrs,
+	.is_visible = virtblk_attrs_are_visible,
+};
+
+static const struct attribute_group *virtblk_attr_groups[] = {
+	&virtblk_attr_group,
+	NULL,
+};
 
 static int virtblk_init_request(struct blk_mq_tag_set *set, struct request *rq,
 		unsigned int hctx_idx, unsigned int numa_node)
@@ -780,24 +805,9 @@ static int virtblk_probe(struct virtio_device *vdev)
 	virtblk_update_capacity(vblk, false);
 	virtio_device_ready(vdev);
 
-	device_add_disk(&vdev->dev, vblk->disk);
-	err = device_create_file(disk_to_dev(vblk->disk), &dev_attr_serial);
-	if (err)
-		goto out_del_disk;
-
-	if (virtio_has_feature(vdev, VIRTIO_BLK_F_CONFIG_WCE))
-		err = device_create_file(disk_to_dev(vblk->disk),
-					 &dev_attr_cache_type_rw);
-	else
-		err = device_create_file(disk_to_dev(vblk->disk),
-					 &dev_attr_cache_type_ro);
-	if (err)
-		goto out_del_disk;
+	device_add_disk(&vdev->dev, vblk->disk, virtblk_attr_groups);
 	return 0;
 
-out_del_disk:
-	del_gendisk(vblk->disk);
-	blk_cleanup_queue(vblk->disk->queue);
 out_free_tags:
 	blk_mq_free_tag_set(&vblk->tag_set);
 out_put_disk:
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 429d20131c7e..9eea83ae01c6 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -2420,7 +2420,7 @@ static void blkfront_connect(struct blkfront_info *info)
 	for (i = 0; i < info->nr_rings; i++)
 		kick_pending_request_queues(&info->rinfo[i]);
 
-	device_add_disk(&info->xbdev->dev, info->gd);
+	device_add_disk(&info->xbdev->dev, info->gd, NULL);
 
 	info->is_ready = 1;
 	return;
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index c24589414c75..87ccef4bd69e 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -88,7 +88,7 @@
 #include <linux/kernel.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/mutex.h>
 #include <linux/ata.h>
 #include <linux/hdreg.h>
@@ -209,6 +209,8 @@ struct ace_device {
 	struct device *dev;
 	struct request_queue *queue;
 	struct gendisk *gd;
+	struct blk_mq_tag_set tag_set;
+	struct list_head rq_list;
 
 	/* Inserted CF card parameters */
 	u16 cf_id[ATA_ID_WORDS];
@@ -462,18 +464,26 @@ static inline void ace_fsm_yieldirq(struct ace_device *ace)
 	ace->fsm_continue_flag = 0;
 }
 
+static bool ace_has_next_request(struct request_queue *q)
+{
+	struct ace_device *ace = q->queuedata;
+
+	return !list_empty(&ace->rq_list);
+}
+
 /* Get the next read/write request; ending requests that we don't handle */
 static struct request *ace_get_next_request(struct request_queue *q)
 {
-	struct request *req;
+	struct ace_device *ace = q->queuedata;
+	struct request *rq;
 
-	while ((req = blk_peek_request(q)) != NULL) {
-		if (!blk_rq_is_passthrough(req))
-			break;
-		blk_start_request(req);
-		__blk_end_request_all(req, BLK_STS_IOERR);
+	rq = list_first_entry_or_null(&ace->rq_list, struct request, queuelist);
+	if (rq) {
+		list_del_init(&rq->queuelist);
+		blk_mq_start_request(rq);
 	}
-	return req;
+
+	return NULL;
 }
 
 static void ace_fsm_dostate(struct ace_device *ace)
@@ -499,11 +509,11 @@ static void ace_fsm_dostate(struct ace_device *ace)
 
 		/* Drop all in-flight and pending requests */
 		if (ace->req) {
-			__blk_end_request_all(ace->req, BLK_STS_IOERR);
+			blk_mq_end_request(ace->req, BLK_STS_IOERR);
 			ace->req = NULL;
 		}
-		while ((req = blk_fetch_request(ace->queue)) != NULL)
-			__blk_end_request_all(req, BLK_STS_IOERR);
+		while ((req = ace_get_next_request(ace->queue)) != NULL)
+			blk_mq_end_request(req, BLK_STS_IOERR);
 
 		/* Drop back to IDLE state and notify waiters */
 		ace->fsm_state = ACE_FSM_STATE_IDLE;
@@ -517,7 +527,7 @@ static void ace_fsm_dostate(struct ace_device *ace)
 	switch (ace->fsm_state) {
 	case ACE_FSM_STATE_IDLE:
 		/* See if there is anything to do */
-		if (ace->id_req_count || ace_get_next_request(ace->queue)) {
+		if (ace->id_req_count || ace_has_next_request(ace->queue)) {
 			ace->fsm_iter_num++;
 			ace->fsm_state = ACE_FSM_STATE_REQ_LOCK;
 			mod_timer(&ace->stall_timer, jiffies + HZ);
@@ -651,7 +661,6 @@ static void ace_fsm_dostate(struct ace_device *ace)
 			ace->fsm_state = ACE_FSM_STATE_IDLE;
 			break;
 		}
-		blk_start_request(req);
 
 		/* Okay, it's a data request, set it up for transfer */
 		dev_dbg(ace->dev,
@@ -728,7 +737,8 @@ static void ace_fsm_dostate(struct ace_device *ace)
 		}
 
 		/* bio finished; is there another one? */
-		if (__blk_end_request_cur(ace->req, BLK_STS_OK)) {
+		if (blk_update_request(ace->req, BLK_STS_OK,
+		    blk_rq_cur_bytes(ace->req))) {
 			/* dev_dbg(ace->dev, "next block; h=%u c=%u\n",
 			 *      blk_rq_sectors(ace->req),
 			 *      blk_rq_cur_sectors(ace->req));
@@ -854,17 +864,23 @@ static irqreturn_t ace_interrupt(int irq, void *dev_id)
 /* ---------------------------------------------------------------------
  * Block ops
  */
-static void ace_request(struct request_queue * q)
+static blk_status_t ace_queue_rq(struct blk_mq_hw_ctx *hctx,
+				 const struct blk_mq_queue_data *bd)
 {
-	struct request *req;
-	struct ace_device *ace;
-
-	req = ace_get_next_request(q);
+	struct ace_device *ace = hctx->queue->queuedata;
+	struct request *req = bd->rq;
 
-	if (req) {
-		ace = req->rq_disk->private_data;
-		tasklet_schedule(&ace->fsm_tasklet);
+	if (blk_rq_is_passthrough(req)) {
+		blk_mq_start_request(req);
+		return BLK_STS_IOERR;
 	}
+
+	spin_lock_irq(&ace->lock);
+	list_add_tail(&req->queuelist, &ace->rq_list);
+	spin_unlock_irq(&ace->lock);
+
+	tasklet_schedule(&ace->fsm_tasklet);
+	return BLK_STS_OK;
 }
 
 static unsigned int ace_check_events(struct gendisk *gd, unsigned int clearing)
@@ -957,6 +973,10 @@ static const struct block_device_operations ace_fops = {
 	.getgeo = ace_getgeo,
 };
 
+static const struct blk_mq_ops ace_mq_ops = {
+	.queue_rq	= ace_queue_rq,
+};
+
 /* --------------------------------------------------------------------
  * SystemACE device setup/teardown code
  */
@@ -972,6 +992,7 @@ static int ace_setup(struct ace_device *ace)
 
 	spin_lock_init(&ace->lock);
 	init_completion(&ace->id_completion);
+	INIT_LIST_HEAD(&ace->rq_list);
 
 	/*
 	 * Map the device
@@ -989,9 +1010,15 @@ static int ace_setup(struct ace_device *ace)
 	/*
 	 * Initialize the request queue
 	 */
-	ace->queue = blk_init_queue(ace_request, &ace->lock);
-	if (ace->queue == NULL)
+	ace->queue = blk_mq_init_sq_queue(&ace->tag_set, &ace_mq_ops, 2,
+						BLK_MQ_F_SHOULD_MERGE);
+	if (IS_ERR(ace->queue)) {
+		rc = PTR_ERR(ace->queue);
+		ace->queue = NULL;
 		goto err_blk_initq;
+	}
+	ace->queue->queuedata = ace;
+
 	blk_queue_logical_block_size(ace->queue, 512);
 	blk_queue_bounce_limit(ace->queue, BLK_BOUNCE_HIGH);
 
@@ -1066,6 +1093,7 @@ err_read:
 	put_disk(ace->gd);
 err_alloc_disk:
 	blk_cleanup_queue(ace->queue);
+	blk_mq_free_tag_set(&ace->tag_set);
 err_blk_initq:
 	iounmap(ace->baseaddr);
 err_ioremap:
@@ -1081,8 +1109,10 @@ static void ace_teardown(struct ace_device *ace)
 		put_disk(ace->gd);
 	}
 
-	if (ace->queue)
+	if (ace->queue) {
 		blk_cleanup_queue(ace->queue);
+		blk_mq_free_tag_set(&ace->tag_set);
+	}
 
 	tasklet_kill(&ace->fsm_tasklet);
 
diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c
index d0c5bc4e0703..1106c076fa4b 100644
--- a/drivers/block/z2ram.c
+++ b/drivers/block/z2ram.c
@@ -31,7 +31,7 @@
 #include <linux/vmalloc.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/bitops.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
@@ -66,43 +66,44 @@ static DEFINE_SPINLOCK(z2ram_lock);
 
 static struct gendisk *z2ram_gendisk;
 
-static void do_z2_request(struct request_queue *q)
+static blk_status_t z2_queue_rq(struct blk_mq_hw_ctx *hctx,
+				const struct blk_mq_queue_data *bd)
 {
-	struct request *req;
-
-	req = blk_fetch_request(q);
-	while (req) {
-		unsigned long start = blk_rq_pos(req) << 9;
-		unsigned long len  = blk_rq_cur_bytes(req);
-		blk_status_t err = BLK_STS_OK;
-
-		if (start + len > z2ram_size) {
-			pr_err(DEVICE_NAME ": bad access: block=%llu, "
-			       "count=%u\n",
-			       (unsigned long long)blk_rq_pos(req),
-			       blk_rq_cur_sectors(req));
-			err = BLK_STS_IOERR;
-			goto done;
-		}
-		while (len) {
-			unsigned long addr = start & Z2RAM_CHUNKMASK;
-			unsigned long size = Z2RAM_CHUNKSIZE - addr;
-			void *buffer = bio_data(req->bio);
-
-			if (len < size)
-				size = len;
-			addr += z2ram_map[ start >> Z2RAM_CHUNKSHIFT ];
-			if (rq_data_dir(req) == READ)
-				memcpy(buffer, (char *)addr, size);
-			else
-				memcpy((char *)addr, buffer, size);
-			start += size;
-			len -= size;
-		}
-	done:
-		if (!__blk_end_request_cur(req, err))
-			req = blk_fetch_request(q);
+	struct request *req = bd->rq;
+	unsigned long start = blk_rq_pos(req) << 9;
+	unsigned long len  = blk_rq_cur_bytes(req);
+
+	blk_mq_start_request(req);
+
+	if (start + len > z2ram_size) {
+		pr_err(DEVICE_NAME ": bad access: block=%llu, "
+		       "count=%u\n",
+		       (unsigned long long)blk_rq_pos(req),
+		       blk_rq_cur_sectors(req));
+		return BLK_STS_IOERR;
+	}
+
+	spin_lock_irq(&z2ram_lock);
+
+	while (len) {
+		unsigned long addr = start & Z2RAM_CHUNKMASK;
+		unsigned long size = Z2RAM_CHUNKSIZE - addr;
+		void *buffer = bio_data(req->bio);
+
+		if (len < size)
+			size = len;
+		addr += z2ram_map[ start >> Z2RAM_CHUNKSHIFT ];
+		if (rq_data_dir(req) == READ)
+			memcpy(buffer, (char *)addr, size);
+		else
+			memcpy((char *)addr, buffer, size);
+		start += size;
+		len -= size;
 	}
+
+	spin_unlock_irq(&z2ram_lock);
+	blk_mq_end_request(req, BLK_STS_OK);
+	return BLK_STS_OK;
 }
 
 static void
@@ -337,6 +338,11 @@ static struct kobject *z2_find(dev_t dev, int *part, void *data)
 }
 
 static struct request_queue *z2_queue;
+static struct blk_mq_tag_set tag_set;
+
+static const struct blk_mq_ops z2_mq_ops = {
+	.queue_rq	= z2_queue_rq,
+};
 
 static int __init 
 z2_init(void)
@@ -355,9 +361,13 @@ z2_init(void)
     if (!z2ram_gendisk)
 	goto out_disk;
 
-    z2_queue = blk_init_queue(do_z2_request, &z2ram_lock);
-    if (!z2_queue)
+    z2_queue = blk_mq_init_sq_queue(&tag_set, &z2_mq_ops, 16,
+					BLK_MQ_F_SHOULD_MERGE);
+    if (IS_ERR(z2_queue)) {
+	ret = PTR_ERR(z2_queue);
+	z2_queue = NULL;
 	goto out_queue;
+    }
 
     z2ram_gendisk->major = Z2RAM_MAJOR;
     z2ram_gendisk->first_minor = 0;
@@ -387,6 +397,7 @@ static void __exit z2_exit(void)
     del_gendisk(z2ram_gendisk);
     put_disk(z2ram_gendisk);
     blk_cleanup_queue(z2_queue);
+    blk_mq_free_tag_set(&tag_set);
 
     if ( current_device != -1 )
     {
diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig
index 635235759a0a..fcd055457364 100644
--- a/drivers/block/zram/Kconfig
+++ b/drivers/block/zram/Kconfig
@@ -3,7 +3,6 @@ config ZRAM
 	tristate "Compressed RAM block device support"
 	depends on BLOCK && SYSFS && ZSMALLOC && CRYPTO
 	select CRYPTO_LZO
-	default n
 	help
 	  Creates virtual block devices called /dev/zramX (X = 0, 1, ...).
 	  Pages written to these disks are compressed and stored in memory
@@ -18,7 +17,6 @@ config ZRAM
 config ZRAM_WRITEBACK
        bool "Write back incompressible page to backing device"
        depends on ZRAM
-       default n
        help
 	 With incompressible page, there is no memory saving to keep it
 	 in memory. Instead, write it out to backing device.
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index a1d6b5597c17..4879595200e1 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1636,6 +1636,11 @@ static const struct attribute_group zram_disk_attr_group = {
 	.attrs = zram_disk_attrs,
 };
 
+static const struct attribute_group *zram_disk_attr_groups[] = {
+	&zram_disk_attr_group,
+	NULL,
+};
+
 /*
  * Allocate and initialize new zram device. the function returns
  * '>= 0' device_id upon success, and negative value otherwise.
@@ -1716,24 +1721,14 @@ static int zram_add(void)
 
 	zram->disk->queue->backing_dev_info->capabilities |=
 			(BDI_CAP_STABLE_WRITES | BDI_CAP_SYNCHRONOUS_IO);
-	add_disk(zram->disk);
-
-	ret = sysfs_create_group(&disk_to_dev(zram->disk)->kobj,
-				&zram_disk_attr_group);
-	if (ret < 0) {
-		pr_err("Error creating sysfs group for device %d\n",
-				device_id);
-		goto out_free_disk;
-	}
+	device_add_disk(NULL, zram->disk, zram_disk_attr_groups);
+
 	strlcpy(zram->compressor, default_compressor, sizeof(zram->compressor));
 
 	zram_debugfs_register(zram);
 	pr_info("Added device: %s\n", zram->disk->disk_name);
 	return device_id;
 
-out_free_disk:
-	del_gendisk(zram->disk);
-	put_disk(zram->disk);
 out_free_queue:
 	blk_cleanup_queue(queue);
 out_free_idr:
@@ -1762,15 +1757,6 @@ static int zram_remove(struct zram *zram)
 	mutex_unlock(&bdev->bd_mutex);
 
 	zram_debugfs_unregister(zram);
-	/*
-	 * Remove sysfs first, so no one will perform a disksize
-	 * store while we destroy the devices. This also helps during
-	 * hot_remove -- zram_reset_device() is the last holder of
-	 * ->init_lock, no later/concurrent disksize_store() or any
-	 * other sysfs handlers are possible.
-	 */
-	sysfs_remove_group(&disk_to_dev(zram->disk)->kobj,
-			&zram_disk_attr_group);
 
 	/* Make sure all the pending I/O are finished */
 	fsync_bdev(bdev);
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index a5d5a96479bf..614ecdbb4ab7 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -410,10 +410,10 @@ static int cdrom_get_disc_info(struct cdrom_device_info *cdi,
  * hack to have the capability flags defined const, while we can still
  * change it here without gcc complaining at every line.
  */
-#define ENSURE(call, bits)			\
-do {						\
-	if (cdo->call == NULL)			\
-		*change_capability &= ~(bits);	\
+#define ENSURE(cdo, call, bits)					\
+do {								\
+	if (cdo->call == NULL)					\
+		WARN_ON_ONCE((cdo)->capability & (bits));	\
 } while (0)
 
 /*
@@ -589,7 +589,6 @@ int register_cdrom(struct cdrom_device_info *cdi)
 {
 	static char banner_printed;
 	const struct cdrom_device_ops *cdo = cdi->ops;
-	int *change_capability = (int *)&cdo->capability; /* hack */
 
 	cd_dbg(CD_OPEN, "entering register_cdrom\n");
 
@@ -601,16 +600,16 @@ int register_cdrom(struct cdrom_device_info *cdi)
 		cdrom_sysctl_register();
 	}
 
-	ENSURE(drive_status, CDC_DRIVE_STATUS);
+	ENSURE(cdo, drive_status, CDC_DRIVE_STATUS);
 	if (cdo->check_events == NULL && cdo->media_changed == NULL)
-		*change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC);
-	ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
-	ENSURE(lock_door, CDC_LOCK);
-	ENSURE(select_speed, CDC_SELECT_SPEED);
-	ENSURE(get_last_session, CDC_MULTI_SESSION);
-	ENSURE(get_mcn, CDC_MCN);
-	ENSURE(reset, CDC_RESET);
-	ENSURE(generic_packet, CDC_GENERIC_PACKET);
+		WARN_ON_ONCE(cdo->capability & (CDC_MEDIA_CHANGED | CDC_SELECT_DISC));
+	ENSURE(cdo, tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
+	ENSURE(cdo, lock_door, CDC_LOCK);
+	ENSURE(cdo, select_speed, CDC_SELECT_SPEED);
+	ENSURE(cdo, get_last_session, CDC_MULTI_SESSION);
+	ENSURE(cdo, get_mcn, CDC_MCN);
+	ENSURE(cdo, reset, CDC_RESET);
+	ENSURE(cdo, generic_packet, CDC_GENERIC_PACKET);
 	cdi->mc_flags = 0;
 	cdi->options = CDO_USE_FFLAGS;
 
@@ -2445,7 +2444,7 @@ static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
 		return -ENOSYS;
 
 	if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
-		if ((int)arg >= cdi->capacity)
+		if (arg >= cdi->capacity)
 			return -EINVAL;
 	}
 
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index ae3a7537cf0f..757e85b81879 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -31,12 +31,11 @@
 #include <linux/cdrom.h>
 #include <linux/genhd.h>
 #include <linux/bio.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/interrupt.h>
 #include <linux/device.h>
 #include <linux/mutex.h>
 #include <linux/wait.h>
-#include <linux/workqueue.h>
 #include <linux/platform_device.h>
 #include <scsi/scsi.h>
 #include <asm/io.h>
@@ -102,11 +101,6 @@ static int gdrom_major;
 static DECLARE_WAIT_QUEUE_HEAD(command_queue);
 static DECLARE_WAIT_QUEUE_HEAD(request_queue);
 
-static DEFINE_SPINLOCK(gdrom_lock);
-static void gdrom_readdisk_dma(struct work_struct *work);
-static DECLARE_WORK(work, gdrom_readdisk_dma);
-static LIST_HEAD(gdrom_deferred);
-
 struct gdromtoc {
 	unsigned int entry[99];
 	unsigned int first, last;
@@ -122,6 +116,7 @@ static struct gdrom_unit {
 	char disk_type;
 	struct gdromtoc *toc;
 	struct request_queue *gdrom_rq;
+	struct blk_mq_tag_set tag_set;
 } gd;
 
 struct gdrom_id {
@@ -584,103 +579,83 @@ static int gdrom_set_interrupt_handlers(void)
  * 9 -> sectors >> 8
  * 10 -> sectors
  */
-static void gdrom_readdisk_dma(struct work_struct *work)
+static blk_status_t gdrom_readdisk_dma(struct request *req)
 {
 	int block, block_cnt;
 	blk_status_t err;
 	struct packet_command *read_command;
-	struct list_head *elem, *next;
-	struct request *req;
 	unsigned long timeout;
 
-	if (list_empty(&gdrom_deferred))
-		return;
 	read_command = kzalloc(sizeof(struct packet_command), GFP_KERNEL);
 	if (!read_command)
-		return; /* get more memory later? */
+		return BLK_STS_RESOURCE;
+
 	read_command->cmd[0] = 0x30;
 	read_command->cmd[1] = 0x20;
-	spin_lock(&gdrom_lock);
-	list_for_each_safe(elem, next, &gdrom_deferred) {
-		req = list_entry(elem, struct request, queuelist);
-		spin_unlock(&gdrom_lock);
-		block = blk_rq_pos(req)/GD_TO_BLK + GD_SESSION_OFFSET;
-		block_cnt = blk_rq_sectors(req)/GD_TO_BLK;
-		__raw_writel(virt_to_phys(bio_data(req->bio)), GDROM_DMA_STARTADDR_REG);
-		__raw_writel(block_cnt * GDROM_HARD_SECTOR, GDROM_DMA_LENGTH_REG);
-		__raw_writel(1, GDROM_DMA_DIRECTION_REG);
-		__raw_writel(1, GDROM_DMA_ENABLE_REG);
-		read_command->cmd[2] = (block >> 16) & 0xFF;
-		read_command->cmd[3] = (block >> 8) & 0xFF;
-		read_command->cmd[4] = block & 0xFF;
-		read_command->cmd[8] = (block_cnt >> 16) & 0xFF;
-		read_command->cmd[9] = (block_cnt >> 8) & 0xFF;
-		read_command->cmd[10] = block_cnt & 0xFF;
-		/* set for DMA */
-		__raw_writeb(1, GDROM_ERROR_REG);
-		/* other registers */
-		__raw_writeb(0, GDROM_SECNUM_REG);
-		__raw_writeb(0, GDROM_BCL_REG);
-		__raw_writeb(0, GDROM_BCH_REG);
-		__raw_writeb(0, GDROM_DSEL_REG);
-		__raw_writeb(0, GDROM_INTSEC_REG);
-		/* Wait for registers to reset after any previous activity */
-		timeout = jiffies + HZ / 2;
-		while (gdrom_is_busy() && time_before(jiffies, timeout))
-			cpu_relax();
-		__raw_writeb(GDROM_COM_PACKET, GDROM_STATUSCOMMAND_REG);
-		timeout = jiffies + HZ / 2;
-		/* Wait for packet command to finish */
-		while (gdrom_is_busy() && time_before(jiffies, timeout))
-			cpu_relax();
-		gd.pending = 1;
-		gd.transfer = 1;
-		outsw(GDROM_DATA_REG, &read_command->cmd, 6);
-		timeout = jiffies + HZ / 2;
-		/* Wait for any pending DMA to finish */
-		while (__raw_readb(GDROM_DMA_STATUS_REG) &&
-			time_before(jiffies, timeout))
-			cpu_relax();
-		/* start transfer */
-		__raw_writeb(1, GDROM_DMA_STATUS_REG);
-		wait_event_interruptible_timeout(request_queue,
-			gd.transfer == 0, GDROM_DEFAULT_TIMEOUT);
-		err = gd.transfer ? BLK_STS_IOERR : BLK_STS_OK;
-		gd.transfer = 0;
-		gd.pending = 0;
-		/* now seek to take the request spinlock
-		* before handling ending the request */
-		spin_lock(&gdrom_lock);
-		list_del_init(&req->queuelist);
-		__blk_end_request_all(req, err);
-	}
-	spin_unlock(&gdrom_lock);
+	block = blk_rq_pos(req)/GD_TO_BLK + GD_SESSION_OFFSET;
+	block_cnt = blk_rq_sectors(req)/GD_TO_BLK;
+	__raw_writel(virt_to_phys(bio_data(req->bio)), GDROM_DMA_STARTADDR_REG);
+	__raw_writel(block_cnt * GDROM_HARD_SECTOR, GDROM_DMA_LENGTH_REG);
+	__raw_writel(1, GDROM_DMA_DIRECTION_REG);
+	__raw_writel(1, GDROM_DMA_ENABLE_REG);
+	read_command->cmd[2] = (block >> 16) & 0xFF;
+	read_command->cmd[3] = (block >> 8) & 0xFF;
+	read_command->cmd[4] = block & 0xFF;
+	read_command->cmd[8] = (block_cnt >> 16) & 0xFF;
+	read_command->cmd[9] = (block_cnt >> 8) & 0xFF;
+	read_command->cmd[10] = block_cnt & 0xFF;
+	/* set for DMA */
+	__raw_writeb(1, GDROM_ERROR_REG);
+	/* other registers */
+	__raw_writeb(0, GDROM_SECNUM_REG);
+	__raw_writeb(0, GDROM_BCL_REG);
+	__raw_writeb(0, GDROM_BCH_REG);
+	__raw_writeb(0, GDROM_DSEL_REG);
+	__raw_writeb(0, GDROM_INTSEC_REG);
+	/* Wait for registers to reset after any previous activity */
+	timeout = jiffies + HZ / 2;
+	while (gdrom_is_busy() && time_before(jiffies, timeout))
+		cpu_relax();
+	__raw_writeb(GDROM_COM_PACKET, GDROM_STATUSCOMMAND_REG);
+	timeout = jiffies + HZ / 2;
+	/* Wait for packet command to finish */
+	while (gdrom_is_busy() && time_before(jiffies, timeout))
+		cpu_relax();
+	gd.pending = 1;
+	gd.transfer = 1;
+	outsw(GDROM_DATA_REG, &read_command->cmd, 6);
+	timeout = jiffies + HZ / 2;
+	/* Wait for any pending DMA to finish */
+	while (__raw_readb(GDROM_DMA_STATUS_REG) &&
+		time_before(jiffies, timeout))
+		cpu_relax();
+	/* start transfer */
+	__raw_writeb(1, GDROM_DMA_STATUS_REG);
+	wait_event_interruptible_timeout(request_queue,
+		gd.transfer == 0, GDROM_DEFAULT_TIMEOUT);
+	err = gd.transfer ? BLK_STS_IOERR : BLK_STS_OK;
+	gd.transfer = 0;
+	gd.pending = 0;
+
+	blk_mq_end_request(req, err);
 	kfree(read_command);
+	return BLK_STS_OK;
 }
 
-static void gdrom_request(struct request_queue *rq)
-{
-	struct request *req;
-
-	while ((req = blk_fetch_request(rq)) != NULL) {
-		switch (req_op(req)) {
-		case REQ_OP_READ:
-			/*
-			 * Add to list of deferred work and then schedule
-			 * workqueue.
-			 */
-			list_add_tail(&req->queuelist, &gdrom_deferred);
-			schedule_work(&work);
-			break;
-		case REQ_OP_WRITE:
-			pr_notice("Read only device - write request ignored\n");
-			__blk_end_request_all(req, BLK_STS_IOERR);
-			break;
-		default:
-			printk(KERN_DEBUG "gdrom: Non-fs request ignored\n");
-			__blk_end_request_all(req, BLK_STS_IOERR);
-			break;
-		}
+static blk_status_t gdrom_queue_rq(struct blk_mq_hw_ctx *hctx,
+				   const struct blk_mq_queue_data *bd)
+{
+	blk_mq_start_request(bd->rq);
+
+	switch (req_op(bd->rq)) {
+	case REQ_OP_READ:
+		return gdrom_readdisk_dma(bd->rq);
+	case REQ_OP_WRITE:
+		pr_notice("Read only device - write request ignored\n");
+		return BLK_STS_IOERR;
+	default:
+		printk(KERN_DEBUG "gdrom: Non-fs request ignored\n");
+		return BLK_STS_IOERR;
 	}
 }
 
@@ -768,6 +743,10 @@ static int probe_gdrom_setupqueue(void)
 	return gdrom_init_dma_mode();
 }
 
+static const struct blk_mq_ops gdrom_mq_ops = {
+	.queue_rq	= gdrom_queue_rq,
+};
+
 /*
  * register this as a block device and as compliant with the
  * universal CD Rom driver interface
@@ -811,11 +790,15 @@ static int probe_gdrom(struct platform_device *devptr)
 	err = gdrom_set_interrupt_handlers();
 	if (err)
 		goto probe_fail_cmdirq_register;
-	gd.gdrom_rq = blk_init_queue(gdrom_request, &gdrom_lock);
-	if (!gd.gdrom_rq) {
-		err = -ENOMEM;
+
+	gd.gdrom_rq = blk_mq_init_sq_queue(&gd.tag_set, &gdrom_mq_ops, 1,
+				BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING);
+	if (IS_ERR(gd.gdrom_rq)) {
+		rc = PTR_ERR(gd.gdrom_rq);
+		gd.gdrom_rq = NULL;
 		goto probe_fail_requestq;
 	}
+
 	blk_queue_bounce_limit(gd.gdrom_rq, BLK_BOUNCE_HIGH);
 
 	err = probe_gdrom_setupqueue();
@@ -832,6 +815,7 @@ static int probe_gdrom(struct platform_device *devptr)
 
 probe_fail_toc:
 	blk_cleanup_queue(gd.gdrom_rq);
+	blk_mq_free_tag_set(&gd.tag_set);
 probe_fail_requestq:
 	free_irq(HW_EVENT_GDROM_DMA, &gd);
 	free_irq(HW_EVENT_GDROM_CMD, &gd);
@@ -849,8 +833,8 @@ probe_fail_no_mem:
 
 static int remove_gdrom(struct platform_device *devptr)
 {
-	flush_work(&work);
 	blk_cleanup_queue(gd.gdrom_rq);
+	blk_mq_free_tag_set(&gd.tag_set);
 	free_irq(HW_EVENT_GDROM_CMD, &gd);
 	free_irq(HW_EVENT_GDROM_DMA, &gd);
 	del_gendisk(gd.disk);
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 44a7a255ef74..f9b59d41813f 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1784,7 +1784,7 @@ static int ide_cd_probe(ide_drive_t *drive)
 	ide_cd_read_toc(drive);
 	g->fops = &idecd_ops;
 	g->flags |= GENHD_FL_REMOVABLE | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE;
-	device_add_disk(&drive->gendev, g);
+	device_add_disk(&drive->gendev, g, NULL);
 	return 0;
 
 out_free_disk:
diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c
index e823394ed543..04e008e8f6f9 100644
--- a/drivers/ide/ide-gd.c
+++ b/drivers/ide/ide-gd.c
@@ -416,7 +416,7 @@ static int ide_gd_probe(ide_drive_t *drive)
 	if (drive->dev_flags & IDE_DFLAG_REMOVABLE)
 		g->flags = GENHD_FL_REMOVABLE;
 	g->fops = &ide_gd_ops;
-	device_add_disk(&drive->gendev, g);
+	device_add_disk(&drive->gendev, g, NULL);
 	return 0;
 
 out_free_disk:
diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig
index 439bf90d084d..a872cd720967 100644
--- a/drivers/lightnvm/Kconfig
+++ b/drivers/lightnvm/Kconfig
@@ -4,8 +4,7 @@
 
 menuconfig NVM
 	bool "Open-Channel SSD target support"
-	depends on BLOCK && PCI
-	select BLK_DEV_NVME
+	depends on BLOCK
 	help
 	  Say Y here to get to enable Open-channel SSDs.
 
diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index 60aa7bc5a630..efb976a863d2 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -355,6 +355,11 @@ static int nvm_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create)
 		return -EINVAL;
 	}
 
+	if ((tt->flags & NVM_TGT_F_HOST_L2P) != (dev->geo.dom & NVM_RSP_L2P)) {
+		pr_err("nvm: device is incompatible with target L2P type.\n");
+		return -EINVAL;
+	}
+
 	if (nvm_target_exists(create->tgtname)) {
 		pr_err("nvm: target name already exists (%s)\n",
 							create->tgtname);
@@ -598,22 +603,16 @@ static void nvm_ppa_dev_to_tgt(struct nvm_tgt_dev *tgt_dev,
 
 static void nvm_rq_tgt_to_dev(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
 {
-	if (rqd->nr_ppas == 1) {
-		nvm_ppa_tgt_to_dev(tgt_dev, &rqd->ppa_addr, 1);
-		return;
-	}
+	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
 
-	nvm_ppa_tgt_to_dev(tgt_dev, rqd->ppa_list, rqd->nr_ppas);
+	nvm_ppa_tgt_to_dev(tgt_dev, ppa_list, rqd->nr_ppas);
 }
 
 static void nvm_rq_dev_to_tgt(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
 {
-	if (rqd->nr_ppas == 1) {
-		nvm_ppa_dev_to_tgt(tgt_dev, &rqd->ppa_addr, 1);
-		return;
-	}
+	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
 
-	nvm_ppa_dev_to_tgt(tgt_dev, rqd->ppa_list, rqd->nr_ppas);
+	nvm_ppa_dev_to_tgt(tgt_dev, ppa_list, rqd->nr_ppas);
 }
 
 int nvm_register_tgt_type(struct nvm_tgt_type *tt)
@@ -712,45 +711,23 @@ static void nvm_free_rqd_ppalist(struct nvm_tgt_dev *tgt_dev,
 	nvm_dev_dma_free(tgt_dev->parent, rqd->ppa_list, rqd->dma_ppa_list);
 }
 
-int nvm_get_chunk_meta(struct nvm_tgt_dev *tgt_dev, struct nvm_chk_meta *meta,
-		struct ppa_addr ppa, int nchks)
+static int nvm_set_flags(struct nvm_geo *geo, struct nvm_rq *rqd)
 {
-	struct nvm_dev *dev = tgt_dev->parent;
-
-	nvm_ppa_tgt_to_dev(tgt_dev, &ppa, 1);
-
-	return dev->ops->get_chk_meta(tgt_dev->parent, meta,
-						(sector_t)ppa.ppa, nchks);
-}
-EXPORT_SYMBOL(nvm_get_chunk_meta);
-
-int nvm_set_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
-		       int nr_ppas, int type)
-{
-	struct nvm_dev *dev = tgt_dev->parent;
-	struct nvm_rq rqd;
-	int ret;
+	int flags = 0;
 
-	if (nr_ppas > NVM_MAX_VLBA) {
-		pr_err("nvm: unable to update all blocks atomically\n");
-		return -EINVAL;
-	}
+	if (geo->version == NVM_OCSSD_SPEC_20)
+		return 0;
 
-	memset(&rqd, 0, sizeof(struct nvm_rq));
+	if (rqd->is_seq)
+		flags |= geo->pln_mode >> 1;
 
-	nvm_set_rqd_ppalist(tgt_dev, &rqd, ppas, nr_ppas);
-	nvm_rq_tgt_to_dev(tgt_dev, &rqd);
+	if (rqd->opcode == NVM_OP_PREAD)
+		flags |= (NVM_IO_SCRAMBLE_ENABLE | NVM_IO_SUSPEND);
+	else if (rqd->opcode == NVM_OP_PWRITE)
+		flags |= NVM_IO_SCRAMBLE_ENABLE;
 
-	ret = dev->ops->set_bb_tbl(dev, &rqd.ppa_addr, rqd.nr_ppas, type);
-	nvm_free_rqd_ppalist(tgt_dev, &rqd);
-	if (ret) {
-		pr_err("nvm: failed bb mark\n");
-		return -EINVAL;
-	}
-
-	return 0;
+	return flags;
 }
-EXPORT_SYMBOL(nvm_set_tgt_bb_tbl);
 
 int nvm_submit_io(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
 {
@@ -763,6 +740,7 @@ int nvm_submit_io(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
 	nvm_rq_tgt_to_dev(tgt_dev, rqd);
 
 	rqd->dev = tgt_dev;
+	rqd->flags = nvm_set_flags(&tgt_dev->geo, rqd);
 
 	/* In case of error, fail with right address format */
 	ret = dev->ops->submit_io(dev, rqd);
@@ -783,6 +761,7 @@ int nvm_submit_io_sync(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
 	nvm_rq_tgt_to_dev(tgt_dev, rqd);
 
 	rqd->dev = tgt_dev;
+	rqd->flags = nvm_set_flags(&tgt_dev->geo, rqd);
 
 	/* In case of error, fail with right address format */
 	ret = dev->ops->submit_io_sync(dev, rqd);
@@ -805,27 +784,159 @@ void nvm_end_io(struct nvm_rq *rqd)
 }
 EXPORT_SYMBOL(nvm_end_io);
 
+static int nvm_submit_io_sync_raw(struct nvm_dev *dev, struct nvm_rq *rqd)
+{
+	if (!dev->ops->submit_io_sync)
+		return -ENODEV;
+
+	rqd->flags = nvm_set_flags(&dev->geo, rqd);
+
+	return dev->ops->submit_io_sync(dev, rqd);
+}
+
+static int nvm_bb_chunk_sense(struct nvm_dev *dev, struct ppa_addr ppa)
+{
+	struct nvm_rq rqd = { NULL };
+	struct bio bio;
+	struct bio_vec bio_vec;
+	struct page *page;
+	int ret;
+
+	page = alloc_page(GFP_KERNEL);
+	if (!page)
+		return -ENOMEM;
+
+	bio_init(&bio, &bio_vec, 1);
+	bio_add_page(&bio, page, PAGE_SIZE, 0);
+	bio_set_op_attrs(&bio, REQ_OP_READ, 0);
+
+	rqd.bio = &bio;
+	rqd.opcode = NVM_OP_PREAD;
+	rqd.is_seq = 1;
+	rqd.nr_ppas = 1;
+	rqd.ppa_addr = generic_to_dev_addr(dev, ppa);
+
+	ret = nvm_submit_io_sync_raw(dev, &rqd);
+	if (ret)
+		return ret;
+
+	__free_page(page);
+
+	return rqd.error;
+}
+
 /*
- * folds a bad block list from its plane representation to its virtual
- * block representation. The fold is done in place and reduced size is
- * returned.
- *
- * If any of the planes status are bad or grown bad block, the virtual block
- * is marked bad. If not bad, the first plane state acts as the block state.
+ * Scans a 1.2 chunk first and last page to determine if its state.
+ * If the chunk is found to be open, also scan it to update the write
+ * pointer.
  */
-int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
+static int nvm_bb_chunk_scan(struct nvm_dev *dev, struct ppa_addr ppa,
+			     struct nvm_chk_meta *meta)
 {
 	struct nvm_geo *geo = &dev->geo;
-	int blk, offset, pl, blktype;
+	int ret, pg, pl;
 
-	if (nr_blks != geo->num_chk * geo->pln_mode)
-		return -EINVAL;
+	/* sense first page */
+	ret = nvm_bb_chunk_sense(dev, ppa);
+	if (ret < 0) /* io error */
+		return ret;
+	else if (ret == 0) /* valid data */
+		meta->state = NVM_CHK_ST_OPEN;
+	else if (ret > 0) {
+		/*
+		 * If empty page, the chunk is free, else it is an
+		 * actual io error. In that case, mark it offline.
+		 */
+		switch (ret) {
+		case NVM_RSP_ERR_EMPTYPAGE:
+			meta->state = NVM_CHK_ST_FREE;
+			return 0;
+		case NVM_RSP_ERR_FAILCRC:
+		case NVM_RSP_ERR_FAILECC:
+		case NVM_RSP_WARN_HIGHECC:
+			meta->state = NVM_CHK_ST_OPEN;
+			goto scan;
+		default:
+			return -ret; /* other io error */
+		}
+	}
+
+	/* sense last page */
+	ppa.g.pg = geo->num_pg - 1;
+	ppa.g.pl = geo->num_pln - 1;
+
+	ret = nvm_bb_chunk_sense(dev, ppa);
+	if (ret < 0) /* io error */
+		return ret;
+	else if (ret == 0) { /* Chunk fully written */
+		meta->state = NVM_CHK_ST_CLOSED;
+		meta->wp = geo->clba;
+		return 0;
+	} else if (ret > 0) {
+		switch (ret) {
+		case NVM_RSP_ERR_EMPTYPAGE:
+		case NVM_RSP_ERR_FAILCRC:
+		case NVM_RSP_ERR_FAILECC:
+		case NVM_RSP_WARN_HIGHECC:
+			meta->state = NVM_CHK_ST_OPEN;
+			break;
+		default:
+			return -ret; /* other io error */
+		}
+	}
+
+scan:
+	/*
+	 * chunk is open, we scan sequentially to update the write pointer.
+	 * We make the assumption that targets write data across all planes
+	 * before moving to the next page.
+	 */
+	for (pg = 0; pg < geo->num_pg; pg++) {
+		for (pl = 0; pl < geo->num_pln; pl++) {
+			ppa.g.pg = pg;
+			ppa.g.pl = pl;
+
+			ret = nvm_bb_chunk_sense(dev, ppa);
+			if (ret < 0) /* io error */
+				return ret;
+			else if (ret == 0) {
+				meta->wp += geo->ws_min;
+			} else if (ret > 0) {
+				switch (ret) {
+				case NVM_RSP_ERR_EMPTYPAGE:
+					return 0;
+				case NVM_RSP_ERR_FAILCRC:
+				case NVM_RSP_ERR_FAILECC:
+				case NVM_RSP_WARN_HIGHECC:
+					meta->wp += geo->ws_min;
+					break;
+				default:
+					return -ret; /* other io error */
+				}
+			}
+		}
+	}
+
+	return 0;
+}
+
+/*
+ * folds a bad block list from its plane representation to its
+ * chunk representation.
+ *
+ * If any of the planes status are bad or grown bad, the chunk is marked
+ * offline. If not bad, the first plane state acts as the chunk state.
+ */
+static int nvm_bb_to_chunk(struct nvm_dev *dev, struct ppa_addr ppa,
+			   u8 *blks, int nr_blks, struct nvm_chk_meta *meta)
+{
+	struct nvm_geo *geo = &dev->geo;
+	int ret, blk, pl, offset, blktype;
 
 	for (blk = 0; blk < geo->num_chk; blk++) {
 		offset = blk * geo->pln_mode;
 		blktype = blks[offset];
 
-		/* Bad blocks on any planes take precedence over other types */
 		for (pl = 0; pl < geo->pln_mode; pl++) {
 			if (blks[offset + pl] &
 					(NVM_BLK_T_BAD|NVM_BLK_T_GRWN_BAD)) {
@@ -834,23 +945,124 @@ int nvm_bb_tbl_fold(struct nvm_dev *dev, u8 *blks, int nr_blks)
 			}
 		}
 
-		blks[blk] = blktype;
+		ppa.g.blk = blk;
+
+		meta->wp = 0;
+		meta->type = NVM_CHK_TP_W_SEQ;
+		meta->wi = 0;
+		meta->slba = generic_to_dev_addr(dev, ppa).ppa;
+		meta->cnlb = dev->geo.clba;
+
+		if (blktype == NVM_BLK_T_FREE) {
+			ret = nvm_bb_chunk_scan(dev, ppa, meta);
+			if (ret)
+				return ret;
+		} else {
+			meta->state = NVM_CHK_ST_OFFLINE;
+		}
+
+		meta++;
 	}
 
-	return geo->num_chk;
+	return 0;
+}
+
+static int nvm_get_bb_meta(struct nvm_dev *dev, sector_t slba,
+			   int nchks, struct nvm_chk_meta *meta)
+{
+	struct nvm_geo *geo = &dev->geo;
+	struct ppa_addr ppa;
+	u8 *blks;
+	int ch, lun, nr_blks;
+	int ret;
+
+	ppa.ppa = slba;
+	ppa = dev_to_generic_addr(dev, ppa);
+
+	if (ppa.g.blk != 0)
+		return -EINVAL;
+
+	if ((nchks % geo->num_chk) != 0)
+		return -EINVAL;
+
+	nr_blks = geo->num_chk * geo->pln_mode;
+
+	blks = kmalloc(nr_blks, GFP_KERNEL);
+	if (!blks)
+		return -ENOMEM;
+
+	for (ch = ppa.g.ch; ch < geo->num_ch; ch++) {
+		for (lun = ppa.g.lun; lun < geo->num_lun; lun++) {
+			struct ppa_addr ppa_gen, ppa_dev;
+
+			if (!nchks)
+				goto done;
+
+			ppa_gen.ppa = 0;
+			ppa_gen.g.ch = ch;
+			ppa_gen.g.lun = lun;
+			ppa_dev = generic_to_dev_addr(dev, ppa_gen);
+
+			ret = dev->ops->get_bb_tbl(dev, ppa_dev, blks);
+			if (ret)
+				goto done;
+
+			ret = nvm_bb_to_chunk(dev, ppa_gen, blks, nr_blks,
+									meta);
+			if (ret)
+				goto done;
+
+			meta += geo->num_chk;
+			nchks -= geo->num_chk;
+		}
+	}
+done:
+	kfree(blks);
+	return ret;
 }
-EXPORT_SYMBOL(nvm_bb_tbl_fold);
 
-int nvm_get_tgt_bb_tbl(struct nvm_tgt_dev *tgt_dev, struct ppa_addr ppa,
-		       u8 *blks)
+int nvm_get_chunk_meta(struct nvm_tgt_dev *tgt_dev, struct ppa_addr ppa,
+		       int nchks, struct nvm_chk_meta *meta)
 {
 	struct nvm_dev *dev = tgt_dev->parent;
 
 	nvm_ppa_tgt_to_dev(tgt_dev, &ppa, 1);
 
-	return dev->ops->get_bb_tbl(dev, ppa, blks);
+	if (dev->geo.version == NVM_OCSSD_SPEC_12)
+		return nvm_get_bb_meta(dev, (sector_t)ppa.ppa, nchks, meta);
+
+	return dev->ops->get_chk_meta(dev, (sector_t)ppa.ppa, nchks, meta);
+}
+EXPORT_SYMBOL_GPL(nvm_get_chunk_meta);
+
+int nvm_set_chunk_meta(struct nvm_tgt_dev *tgt_dev, struct ppa_addr *ppas,
+		       int nr_ppas, int type)
+{
+	struct nvm_dev *dev = tgt_dev->parent;
+	struct nvm_rq rqd;
+	int ret;
+
+	if (dev->geo.version == NVM_OCSSD_SPEC_20)
+		return 0;
+
+	if (nr_ppas > NVM_MAX_VLBA) {
+		pr_err("nvm: unable to update all blocks atomically\n");
+		return -EINVAL;
+	}
+
+	memset(&rqd, 0, sizeof(struct nvm_rq));
+
+	nvm_set_rqd_ppalist(tgt_dev, &rqd, ppas, nr_ppas);
+	nvm_rq_tgt_to_dev(tgt_dev, &rqd);
+
+	ret = dev->ops->set_bb_tbl(dev, &rqd.ppa_addr, rqd.nr_ppas, type);
+	nvm_free_rqd_ppalist(tgt_dev, &rqd);
+	if (ret)
+		return -EINVAL;
+
+	return 0;
 }
-EXPORT_SYMBOL(nvm_get_tgt_bb_tbl);
+EXPORT_SYMBOL_GPL(nvm_set_chunk_meta);
 
 static int nvm_core_init(struct nvm_dev *dev)
 {
diff --git a/drivers/lightnvm/pblk-cache.c b/drivers/lightnvm/pblk-cache.c
index f565a56b898a..c9fa26f95659 100644
--- a/drivers/lightnvm/pblk-cache.c
+++ b/drivers/lightnvm/pblk-cache.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2016 CNEX Labs
  * Initial release: Javier Gonzalez <javier@cnexlabs.com>
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 00984b486fea..6944aac43b01 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2016 CNEX Labs
  * Initial release: Javier Gonzalez <javier@cnexlabs.com>
@@ -16,7 +17,10 @@
  *
  */
 
+#define CREATE_TRACE_POINTS
+
 #include "pblk.h"
+#include "pblk-trace.h"
 
 static void pblk_line_mark_bb(struct work_struct *work)
 {
@@ -27,12 +31,12 @@ static void pblk_line_mark_bb(struct work_struct *work)
 	struct ppa_addr *ppa = line_ws->priv;
 	int ret;
 
-	ret = nvm_set_tgt_bb_tbl(dev, ppa, 1, NVM_BLK_T_GRWN_BAD);
+	ret = nvm_set_chunk_meta(dev, ppa, 1, NVM_BLK_T_GRWN_BAD);
 	if (ret) {
 		struct pblk_line *line;
 		int pos;
 
-		line = &pblk->lines[pblk_ppa_to_line(*ppa)];
+		line = pblk_ppa_to_line(pblk, *ppa);
 		pos = pblk_ppa_to_pos(&dev->geo, *ppa);
 
 		pblk_err(pblk, "failed to mark bb, line:%d, pos:%d\n",
@@ -80,19 +84,28 @@ static void __pblk_end_io_erase(struct pblk *pblk, struct nvm_rq *rqd)
 	struct pblk_line *line;
 	int pos;
 
-	line = &pblk->lines[pblk_ppa_to_line(rqd->ppa_addr)];
+	line = pblk_ppa_to_line(pblk, rqd->ppa_addr);
 	pos = pblk_ppa_to_pos(geo, rqd->ppa_addr);
 	chunk = &line->chks[pos];
 
 	atomic_dec(&line->left_seblks);
 
 	if (rqd->error) {
+		trace_pblk_chunk_reset(pblk_disk_name(pblk),
+				&rqd->ppa_addr, PBLK_CHUNK_RESET_FAILED);
+
 		chunk->state = NVM_CHK_ST_OFFLINE;
 		pblk_mark_bb(pblk, line, rqd->ppa_addr);
 	} else {
+		trace_pblk_chunk_reset(pblk_disk_name(pblk),
+				&rqd->ppa_addr, PBLK_CHUNK_RESET_DONE);
+
 		chunk->state = NVM_CHK_ST_FREE;
 	}
 
+	trace_pblk_chunk_state(pblk_disk_name(pblk), &rqd->ppa_addr,
+				chunk->state);
+
 	atomic_dec(&pblk->inflight_io);
 }
 
@@ -108,9 +121,9 @@ static void pblk_end_io_erase(struct nvm_rq *rqd)
 /*
  * Get information for all chunks from the device.
  *
- * The caller is responsible for freeing the returned structure
+ * The caller is responsible for freeing (vmalloc) the returned structure
  */
-struct nvm_chk_meta *pblk_chunk_get_info(struct pblk *pblk)
+struct nvm_chk_meta *pblk_get_chunk_meta(struct pblk *pblk)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
@@ -122,11 +135,11 @@ struct nvm_chk_meta *pblk_chunk_get_info(struct pblk *pblk)
 	ppa.ppa = 0;
 
 	len = geo->all_chunks * sizeof(*meta);
-	meta = kzalloc(len, GFP_KERNEL);
+	meta = vzalloc(len);
 	if (!meta)
 		return ERR_PTR(-ENOMEM);
 
-	ret = nvm_get_chunk_meta(dev, meta, ppa, geo->all_chunks);
+	ret = nvm_get_chunk_meta(dev, ppa, geo->all_chunks, meta);
 	if (ret) {
 		kfree(meta);
 		return ERR_PTR(-EIO);
@@ -192,7 +205,6 @@ void pblk_map_invalidate(struct pblk *pblk, struct ppa_addr ppa)
 {
 	struct pblk_line *line;
 	u64 paddr;
-	int line_id;
 
 #ifdef CONFIG_NVM_PBLK_DEBUG
 	/* Callers must ensure that the ppa points to a device address */
@@ -200,8 +212,7 @@ void pblk_map_invalidate(struct pblk *pblk, struct ppa_addr ppa)
 	BUG_ON(pblk_ppa_empty(ppa));
 #endif
 
-	line_id = pblk_ppa_to_line(ppa);
-	line = &pblk->lines[line_id];
+	line = pblk_ppa_to_line(pblk, ppa);
 	paddr = pblk_dev_ppa_to_line_addr(pblk, ppa);
 
 	__pblk_map_invalidate(pblk, line, paddr);
@@ -227,6 +238,33 @@ static void pblk_invalidate_range(struct pblk *pblk, sector_t slba,
 	spin_unlock(&pblk->trans_lock);
 }
 
+int pblk_alloc_rqd_meta(struct pblk *pblk, struct nvm_rq *rqd)
+{
+	struct nvm_tgt_dev *dev = pblk->dev;
+
+	rqd->meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
+							&rqd->dma_meta_list);
+	if (!rqd->meta_list)
+		return -ENOMEM;
+
+	if (rqd->nr_ppas == 1)
+		return 0;
+
+	rqd->ppa_list = rqd->meta_list + pblk_dma_meta_size;
+	rqd->dma_ppa_list = rqd->dma_meta_list + pblk_dma_meta_size;
+
+	return 0;
+}
+
+void pblk_free_rqd_meta(struct pblk *pblk, struct nvm_rq *rqd)
+{
+	struct nvm_tgt_dev *dev = pblk->dev;
+
+	if (rqd->meta_list)
+		nvm_dev_dma_free(dev->parent, rqd->meta_list,
+				rqd->dma_meta_list);
+}
+
 /* Caller must guarantee that the request is a valid type */
 struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int type)
 {
@@ -258,7 +296,6 @@ struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int type)
 /* Typically used on completion path. Cannot guarantee request consistency */
 void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int type)
 {
-	struct nvm_tgt_dev *dev = pblk->dev;
 	mempool_t *pool;
 
 	switch (type) {
@@ -279,9 +316,7 @@ void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int type)
 		return;
 	}
 
-	if (rqd->meta_list)
-		nvm_dev_dma_free(dev->parent, rqd->meta_list,
-				rqd->dma_meta_list);
+	pblk_free_rqd_meta(pblk, rqd);
 	mempool_free(rqd, pool);
 }
 
@@ -409,6 +444,9 @@ struct list_head *pblk_line_gc_list(struct pblk *pblk, struct pblk_line *line)
 		}
 	} else {
 		line->state = PBLK_LINESTATE_CORRUPT;
+		trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
+
 		line->gc_group = PBLK_LINEGC_NONE;
 		move_list =  &l_mg->corrupt_list;
 		pblk_err(pblk, "corrupted vsc for line %d, vsc:%d (%d/%d/%d)\n",
@@ -479,9 +517,30 @@ int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd)
 	return nvm_submit_io(dev, rqd);
 }
 
+void pblk_check_chunk_state_update(struct pblk *pblk, struct nvm_rq *rqd)
+{
+	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
+
+	int i;
+
+	for (i = 0; i < rqd->nr_ppas; i++) {
+		struct ppa_addr *ppa = &ppa_list[i];
+		struct nvm_chk_meta *chunk = pblk_dev_ppa_to_chunk(pblk, *ppa);
+		u64 caddr = pblk_dev_ppa_to_chunk_addr(pblk, *ppa);
+
+		if (caddr == 0)
+			trace_pblk_chunk_state(pblk_disk_name(pblk),
+							ppa, NVM_CHK_ST_OPEN);
+		else if (caddr == chunk->cnlb)
+			trace_pblk_chunk_state(pblk_disk_name(pblk),
+							ppa, NVM_CHK_ST_CLOSED);
+	}
+}
+
 int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
+	int ret;
 
 	atomic_inc(&pblk->inflight_io);
 
@@ -490,7 +549,27 @@ int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd)
 		return NVM_IO_ERR;
 #endif
 
-	return nvm_submit_io_sync(dev, rqd);
+	ret = nvm_submit_io_sync(dev, rqd);
+
+	if (trace_pblk_chunk_state_enabled() && !ret &&
+	    rqd->opcode == NVM_OP_PWRITE)
+		pblk_check_chunk_state_update(pblk, rqd);
+
+	return ret;
+}
+
+int pblk_submit_io_sync_sem(struct pblk *pblk, struct nvm_rq *rqd)
+{
+	struct ppa_addr *ppa_list;
+	int ret;
+
+	ppa_list = (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr;
+
+	pblk_down_chunk(pblk, ppa_list[0]);
+	ret = pblk_submit_io_sync(pblk, rqd);
+	pblk_up_chunk(pblk, ppa_list[0]);
+
+	return ret;
 }
 
 static void pblk_bio_map_addr_endio(struct bio *bio)
@@ -621,262 +700,227 @@ u64 pblk_lookup_page(struct pblk *pblk, struct pblk_line *line)
 	return paddr;
 }
 
-/*
- * Submit emeta to one LUN in the raid line at the time to avoid a deadlock when
- * taking the per LUN semaphore.
- */
-static int pblk_line_submit_emeta_io(struct pblk *pblk, struct pblk_line *line,
-				     void *emeta_buf, u64 paddr, int dir)
+u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
-	struct pblk_line_mgmt *l_mg = &pblk->l_mg;
 	struct pblk_line_meta *lm = &pblk->lm;
-	void *ppa_list, *meta_list;
-	struct bio *bio;
-	struct nvm_rq rqd;
-	dma_addr_t dma_ppa_list, dma_meta_list;
-	int min = pblk->min_write_pgs;
-	int left_ppas = lm->emeta_sec[0];
-	int id = line->id;
-	int rq_ppas, rq_len;
-	int cmd_op, bio_op;
-	int i, j;
-	int ret;
+	int bit;
 
-	if (dir == PBLK_WRITE) {
-		bio_op = REQ_OP_WRITE;
-		cmd_op = NVM_OP_PWRITE;
-	} else if (dir == PBLK_READ) {
-		bio_op = REQ_OP_READ;
-		cmd_op = NVM_OP_PREAD;
-	} else
-		return -EINVAL;
+	/* This usually only happens on bad lines */
+	bit = find_first_zero_bit(line->blk_bitmap, lm->blk_per_line);
+	if (bit >= lm->blk_per_line)
+		return -1;
 
-	meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
-							&dma_meta_list);
-	if (!meta_list)
-		return -ENOMEM;
+	return bit * geo->ws_opt;
+}
 
-	ppa_list = meta_list + pblk_dma_meta_size;
-	dma_ppa_list = dma_meta_list + pblk_dma_meta_size;
+int pblk_line_smeta_read(struct pblk *pblk, struct pblk_line *line)
+{
+	struct nvm_tgt_dev *dev = pblk->dev;
+	struct pblk_line_meta *lm = &pblk->lm;
+	struct bio *bio;
+	struct nvm_rq rqd;
+	u64 paddr = pblk_line_smeta_start(pblk, line);
+	int i, ret;
 
-next_rq:
 	memset(&rqd, 0, sizeof(struct nvm_rq));
 
-	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
-	rq_len = rq_ppas * geo->csecs;
+	ret = pblk_alloc_rqd_meta(pblk, &rqd);
+	if (ret)
+		return ret;
 
-	bio = pblk_bio_map_addr(pblk, emeta_buf, rq_ppas, rq_len,
-					l_mg->emeta_alloc_type, GFP_KERNEL);
+	bio = bio_map_kern(dev->q, line->smeta, lm->smeta_len, GFP_KERNEL);
 	if (IS_ERR(bio)) {
 		ret = PTR_ERR(bio);
-		goto free_rqd_dma;
+		goto clear_rqd;
 	}
 
 	bio->bi_iter.bi_sector = 0; /* internal bio */
-	bio_set_op_attrs(bio, bio_op, 0);
+	bio_set_op_attrs(bio, REQ_OP_READ, 0);
 
 	rqd.bio = bio;
-	rqd.meta_list = meta_list;
-	rqd.ppa_list = ppa_list;
-	rqd.dma_meta_list = dma_meta_list;
-	rqd.dma_ppa_list = dma_ppa_list;
-	rqd.opcode = cmd_op;
-	rqd.nr_ppas = rq_ppas;
-
-	if (dir == PBLK_WRITE) {
-		struct pblk_sec_meta *meta_list = rqd.meta_list;
-
-		rqd.flags = pblk_set_progr_mode(pblk, PBLK_WRITE);
-		for (i = 0; i < rqd.nr_ppas; ) {
-			spin_lock(&line->lock);
-			paddr = __pblk_alloc_page(pblk, line, min);
-			spin_unlock(&line->lock);
-			for (j = 0; j < min; j++, i++, paddr++) {
-				meta_list[i].lba = cpu_to_le64(ADDR_EMPTY);
-				rqd.ppa_list[i] =
-					addr_to_gen_ppa(pblk, paddr, id);
-			}
-		}
-	} else {
-		for (i = 0; i < rqd.nr_ppas; ) {
-			struct ppa_addr ppa = addr_to_gen_ppa(pblk, paddr, id);
-			int pos = pblk_ppa_to_pos(geo, ppa);
-			int read_type = PBLK_READ_RANDOM;
-
-			if (pblk_io_aligned(pblk, rq_ppas))
-				read_type = PBLK_READ_SEQUENTIAL;
-			rqd.flags = pblk_set_read_mode(pblk, read_type);
-
-			while (test_bit(pos, line->blk_bitmap)) {
-				paddr += min;
-				if (pblk_boundary_paddr_checks(pblk, paddr)) {
-					pblk_err(pblk, "corrupt emeta line:%d\n",
-								line->id);
-					bio_put(bio);
-					ret = -EINTR;
-					goto free_rqd_dma;
-				}
-
-				ppa = addr_to_gen_ppa(pblk, paddr, id);
-				pos = pblk_ppa_to_pos(geo, ppa);
-			}
-
-			if (pblk_boundary_paddr_checks(pblk, paddr + min)) {
-				pblk_err(pblk, "corrupt emeta line:%d\n",
-								line->id);
-				bio_put(bio);
-				ret = -EINTR;
-				goto free_rqd_dma;
-			}
+	rqd.opcode = NVM_OP_PREAD;
+	rqd.nr_ppas = lm->smeta_sec;
+	rqd.is_seq = 1;
 
-			for (j = 0; j < min; j++, i++, paddr++)
-				rqd.ppa_list[i] =
-					addr_to_gen_ppa(pblk, paddr, line->id);
-		}
-	}
+	for (i = 0; i < lm->smeta_sec; i++, paddr++)
+		rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id);
 
 	ret = pblk_submit_io_sync(pblk, &rqd);
 	if (ret) {
-		pblk_err(pblk, "emeta I/O submission failed: %d\n", ret);
+		pblk_err(pblk, "smeta I/O submission failed: %d\n", ret);
 		bio_put(bio);
-		goto free_rqd_dma;
+		goto clear_rqd;
 	}
 
 	atomic_dec(&pblk->inflight_io);
 
-	if (rqd.error) {
-		if (dir == PBLK_WRITE)
-			pblk_log_write_err(pblk, &rqd);
-		else
-			pblk_log_read_err(pblk, &rqd);
-	}
+	if (rqd.error)
+		pblk_log_read_err(pblk, &rqd);
 
-	emeta_buf += rq_len;
-	left_ppas -= rq_ppas;
-	if (left_ppas)
-		goto next_rq;
-free_rqd_dma:
-	nvm_dev_dma_free(dev->parent, rqd.meta_list, rqd.dma_meta_list);
+clear_rqd:
+	pblk_free_rqd_meta(pblk, &rqd);
 	return ret;
 }
 
-u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line)
-{
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-	struct pblk_line_meta *lm = &pblk->lm;
-	int bit;
-
-	/* This usually only happens on bad lines */
-	bit = find_first_zero_bit(line->blk_bitmap, lm->blk_per_line);
-	if (bit >= lm->blk_per_line)
-		return -1;
-
-	return bit * geo->ws_opt;
-}
-
-static int pblk_line_submit_smeta_io(struct pblk *pblk, struct pblk_line *line,
-				     u64 paddr, int dir)
+static int pblk_line_smeta_write(struct pblk *pblk, struct pblk_line *line,
+				 u64 paddr)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct pblk_line_meta *lm = &pblk->lm;
 	struct bio *bio;
 	struct nvm_rq rqd;
-	__le64 *lba_list = NULL;
+	__le64 *lba_list = emeta_to_lbas(pblk, line->emeta->buf);
+	__le64 addr_empty = cpu_to_le64(ADDR_EMPTY);
 	int i, ret;
-	int cmd_op, bio_op;
-	int flags;
-
-	if (dir == PBLK_WRITE) {
-		bio_op = REQ_OP_WRITE;
-		cmd_op = NVM_OP_PWRITE;
-		flags = pblk_set_progr_mode(pblk, PBLK_WRITE);
-		lba_list = emeta_to_lbas(pblk, line->emeta->buf);
-	} else if (dir == PBLK_READ_RECOV || dir == PBLK_READ) {
-		bio_op = REQ_OP_READ;
-		cmd_op = NVM_OP_PREAD;
-		flags = pblk_set_read_mode(pblk, PBLK_READ_SEQUENTIAL);
-	} else
-		return -EINVAL;
 
 	memset(&rqd, 0, sizeof(struct nvm_rq));
 
-	rqd.meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
-							&rqd.dma_meta_list);
-	if (!rqd.meta_list)
-		return -ENOMEM;
-
-	rqd.ppa_list = rqd.meta_list + pblk_dma_meta_size;
-	rqd.dma_ppa_list = rqd.dma_meta_list + pblk_dma_meta_size;
+	ret = pblk_alloc_rqd_meta(pblk, &rqd);
+	if (ret)
+		return ret;
 
 	bio = bio_map_kern(dev->q, line->smeta, lm->smeta_len, GFP_KERNEL);
 	if (IS_ERR(bio)) {
 		ret = PTR_ERR(bio);
-		goto free_ppa_list;
+		goto clear_rqd;
 	}
 
 	bio->bi_iter.bi_sector = 0; /* internal bio */
-	bio_set_op_attrs(bio, bio_op, 0);
+	bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
 
 	rqd.bio = bio;
-	rqd.opcode = cmd_op;
-	rqd.flags = flags;
+	rqd.opcode = NVM_OP_PWRITE;
 	rqd.nr_ppas = lm->smeta_sec;
+	rqd.is_seq = 1;
 
 	for (i = 0; i < lm->smeta_sec; i++, paddr++) {
 		struct pblk_sec_meta *meta_list = rqd.meta_list;
 
 		rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id);
-
-		if (dir == PBLK_WRITE) {
-			__le64 addr_empty = cpu_to_le64(ADDR_EMPTY);
-
-			meta_list[i].lba = lba_list[paddr] = addr_empty;
-		}
+		meta_list[i].lba = lba_list[paddr] = addr_empty;
 	}
 
-	/*
-	 * This I/O is sent by the write thread when a line is replace. Since
-	 * the write thread is the only one sending write and erase commands,
-	 * there is no need to take the LUN semaphore.
-	 */
-	ret = pblk_submit_io_sync(pblk, &rqd);
+	ret = pblk_submit_io_sync_sem(pblk, &rqd);
 	if (ret) {
 		pblk_err(pblk, "smeta I/O submission failed: %d\n", ret);
 		bio_put(bio);
-		goto free_ppa_list;
+		goto clear_rqd;
 	}
 
 	atomic_dec(&pblk->inflight_io);
 
 	if (rqd.error) {
-		if (dir == PBLK_WRITE) {
-			pblk_log_write_err(pblk, &rqd);
-			ret = 1;
-		} else if (dir == PBLK_READ)
-			pblk_log_read_err(pblk, &rqd);
+		pblk_log_write_err(pblk, &rqd);
+		ret = -EIO;
 	}
 
-free_ppa_list:
-	nvm_dev_dma_free(dev->parent, rqd.meta_list, rqd.dma_meta_list);
-
+clear_rqd:
+	pblk_free_rqd_meta(pblk, &rqd);
 	return ret;
 }
 
-int pblk_line_read_smeta(struct pblk *pblk, struct pblk_line *line)
+int pblk_line_emeta_read(struct pblk *pblk, struct pblk_line *line,
+			 void *emeta_buf)
 {
-	u64 bpaddr = pblk_line_smeta_start(pblk, line);
+	struct nvm_tgt_dev *dev = pblk->dev;
+	struct nvm_geo *geo = &dev->geo;
+	struct pblk_line_mgmt *l_mg = &pblk->l_mg;
+	struct pblk_line_meta *lm = &pblk->lm;
+	void *ppa_list, *meta_list;
+	struct bio *bio;
+	struct nvm_rq rqd;
+	u64 paddr = line->emeta_ssec;
+	dma_addr_t dma_ppa_list, dma_meta_list;
+	int min = pblk->min_write_pgs;
+	int left_ppas = lm->emeta_sec[0];
+	int line_id = line->id;
+	int rq_ppas, rq_len;
+	int i, j;
+	int ret;
 
-	return pblk_line_submit_smeta_io(pblk, line, bpaddr, PBLK_READ_RECOV);
-}
+	meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
+							&dma_meta_list);
+	if (!meta_list)
+		return -ENOMEM;
 
-int pblk_line_read_emeta(struct pblk *pblk, struct pblk_line *line,
-			 void *emeta_buf)
-{
-	return pblk_line_submit_emeta_io(pblk, line, emeta_buf,
-						line->emeta_ssec, PBLK_READ);
+	ppa_list = meta_list + pblk_dma_meta_size;
+	dma_ppa_list = dma_meta_list + pblk_dma_meta_size;
+
+next_rq:
+	memset(&rqd, 0, sizeof(struct nvm_rq));
+
+	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
+	rq_len = rq_ppas * geo->csecs;
+
+	bio = pblk_bio_map_addr(pblk, emeta_buf, rq_ppas, rq_len,
+					l_mg->emeta_alloc_type, GFP_KERNEL);
+	if (IS_ERR(bio)) {
+		ret = PTR_ERR(bio);
+		goto free_rqd_dma;
+	}
+
+	bio->bi_iter.bi_sector = 0; /* internal bio */
+	bio_set_op_attrs(bio, REQ_OP_READ, 0);
+
+	rqd.bio = bio;
+	rqd.meta_list = meta_list;
+	rqd.ppa_list = ppa_list;
+	rqd.dma_meta_list = dma_meta_list;
+	rqd.dma_ppa_list = dma_ppa_list;
+	rqd.opcode = NVM_OP_PREAD;
+	rqd.nr_ppas = rq_ppas;
+
+	for (i = 0; i < rqd.nr_ppas; ) {
+		struct ppa_addr ppa = addr_to_gen_ppa(pblk, paddr, line_id);
+		int pos = pblk_ppa_to_pos(geo, ppa);
+
+		if (pblk_io_aligned(pblk, rq_ppas))
+			rqd.is_seq = 1;
+
+		while (test_bit(pos, line->blk_bitmap)) {
+			paddr += min;
+			if (pblk_boundary_paddr_checks(pblk, paddr)) {
+				bio_put(bio);
+				ret = -EINTR;
+				goto free_rqd_dma;
+			}
+
+			ppa = addr_to_gen_ppa(pblk, paddr, line_id);
+			pos = pblk_ppa_to_pos(geo, ppa);
+		}
+
+		if (pblk_boundary_paddr_checks(pblk, paddr + min)) {
+			bio_put(bio);
+			ret = -EINTR;
+			goto free_rqd_dma;
+		}
+
+		for (j = 0; j < min; j++, i++, paddr++)
+			rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line_id);
+	}
+
+	ret = pblk_submit_io_sync(pblk, &rqd);
+	if (ret) {
+		pblk_err(pblk, "emeta I/O submission failed: %d\n", ret);
+		bio_put(bio);
+		goto free_rqd_dma;
+	}
+
+	atomic_dec(&pblk->inflight_io);
+
+	if (rqd.error)
+		pblk_log_read_err(pblk, &rqd);
+
+	emeta_buf += rq_len;
+	left_ppas -= rq_ppas;
+	if (left_ppas)
+		goto next_rq;
+
+free_rqd_dma:
+	nvm_dev_dma_free(dev->parent, rqd.meta_list, rqd.dma_meta_list);
+	return ret;
 }
 
 static void pblk_setup_e_rq(struct pblk *pblk, struct nvm_rq *rqd,
@@ -885,16 +929,17 @@ static void pblk_setup_e_rq(struct pblk *pblk, struct nvm_rq *rqd,
 	rqd->opcode = NVM_OP_ERASE;
 	rqd->ppa_addr = ppa;
 	rqd->nr_ppas = 1;
-	rqd->flags = pblk_set_progr_mode(pblk, PBLK_ERASE);
+	rqd->is_seq = 1;
 	rqd->bio = NULL;
 }
 
 static int pblk_blk_erase_sync(struct pblk *pblk, struct ppa_addr ppa)
 {
-	struct nvm_rq rqd;
-	int ret = 0;
+	struct nvm_rq rqd = {NULL};
+	int ret;
 
-	memset(&rqd, 0, sizeof(struct nvm_rq));
+	trace_pblk_chunk_reset(pblk_disk_name(pblk), &ppa,
+				PBLK_CHUNK_RESET_START);
 
 	pblk_setup_e_rq(pblk, &rqd, ppa);
 
@@ -902,19 +947,6 @@ static int pblk_blk_erase_sync(struct pblk *pblk, struct ppa_addr ppa)
 	 * with writes. Thus, there is no need to take the LUN semaphore.
 	 */
 	ret = pblk_submit_io_sync(pblk, &rqd);
-	if (ret) {
-		struct nvm_tgt_dev *dev = pblk->dev;
-		struct nvm_geo *geo = &dev->geo;
-
-		pblk_err(pblk, "could not sync erase line:%d,blk:%d\n",
-					pblk_ppa_to_line(ppa),
-					pblk_ppa_to_pos(geo, ppa));
-
-		rqd.error = ret;
-		goto out;
-	}
-
-out:
 	rqd.private = pblk;
 	__pblk_end_io_erase(pblk, &rqd);
 
@@ -1008,6 +1040,8 @@ static int pblk_line_init_metadata(struct pblk *pblk, struct pblk_line *line,
 		spin_lock(&l_mg->free_lock);
 		spin_lock(&line->lock);
 		line->state = PBLK_LINESTATE_BAD;
+		trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 		spin_unlock(&line->lock);
 
 		list_add_tail(&line->list, &l_mg->bad_list);
@@ -1071,15 +1105,18 @@ static int pblk_line_init_metadata(struct pblk *pblk, struct pblk_line *line,
 static int pblk_line_alloc_bitmaps(struct pblk *pblk, struct pblk_line *line)
 {
 	struct pblk_line_meta *lm = &pblk->lm;
+	struct pblk_line_mgmt *l_mg = &pblk->l_mg;
 
-	line->map_bitmap = kzalloc(lm->sec_bitmap_len, GFP_KERNEL);
+	line->map_bitmap = mempool_alloc(l_mg->bitmap_pool, GFP_KERNEL);
 	if (!line->map_bitmap)
 		return -ENOMEM;
 
+	memset(line->map_bitmap, 0, lm->sec_bitmap_len);
+
 	/* will be initialized using bb info from map_bitmap */
-	line->invalid_bitmap = kmalloc(lm->sec_bitmap_len, GFP_KERNEL);
+	line->invalid_bitmap = mempool_alloc(l_mg->bitmap_pool, GFP_KERNEL);
 	if (!line->invalid_bitmap) {
-		kfree(line->map_bitmap);
+		mempool_free(line->map_bitmap, l_mg->bitmap_pool);
 		line->map_bitmap = NULL;
 		return -ENOMEM;
 	}
@@ -1122,7 +1159,7 @@ static int pblk_line_init_bb(struct pblk *pblk, struct pblk_line *line,
 	line->smeta_ssec = off;
 	line->cur_sec = off + lm->smeta_sec;
 
-	if (init && pblk_line_submit_smeta_io(pblk, line, off, PBLK_WRITE)) {
+	if (init && pblk_line_smeta_write(pblk, line, off)) {
 		pblk_debug(pblk, "line smeta I/O failed. Retry\n");
 		return 0;
 	}
@@ -1152,6 +1189,8 @@ static int pblk_line_init_bb(struct pblk *pblk, struct pblk_line *line,
 		bitmap_weight(line->invalid_bitmap, lm->sec_per_line)) {
 		spin_lock(&line->lock);
 		line->state = PBLK_LINESTATE_BAD;
+		trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 		spin_unlock(&line->lock);
 
 		list_add_tail(&line->list, &l_mg->bad_list);
@@ -1204,6 +1243,8 @@ static int pblk_line_prepare(struct pblk *pblk, struct pblk_line *line)
 	if (line->state == PBLK_LINESTATE_NEW) {
 		blk_to_erase = pblk_prepare_new_line(pblk, line);
 		line->state = PBLK_LINESTATE_FREE;
+		trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 	} else {
 		blk_to_erase = blk_in_line;
 	}
@@ -1221,6 +1262,8 @@ static int pblk_line_prepare(struct pblk *pblk, struct pblk_line *line)
 	}
 
 	line->state = PBLK_LINESTATE_OPEN;
+	trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+				line->state);
 
 	atomic_set(&line->left_eblks, blk_to_erase);
 	atomic_set(&line->left_seblks, blk_to_erase);
@@ -1265,7 +1308,9 @@ int pblk_line_recov_alloc(struct pblk *pblk, struct pblk_line *line)
 
 void pblk_line_recov_close(struct pblk *pblk, struct pblk_line *line)
 {
-	kfree(line->map_bitmap);
+	struct pblk_line_mgmt *l_mg = &pblk->l_mg;
+
+	mempool_free(line->map_bitmap, l_mg->bitmap_pool);
 	line->map_bitmap = NULL;
 	line->smeta = NULL;
 	line->emeta = NULL;
@@ -1283,8 +1328,11 @@ static void pblk_line_reinit(struct pblk_line *line)
 
 void pblk_line_free(struct pblk_line *line)
 {
-	kfree(line->map_bitmap);
-	kfree(line->invalid_bitmap);
+	struct pblk *pblk = line->pblk;
+	struct pblk_line_mgmt *l_mg = &pblk->l_mg;
+
+	mempool_free(line->map_bitmap, l_mg->bitmap_pool);
+	mempool_free(line->invalid_bitmap, l_mg->bitmap_pool);
 
 	pblk_line_reinit(line);
 }
@@ -1312,6 +1360,8 @@ retry:
 	if (unlikely(bit >= lm->blk_per_line)) {
 		spin_lock(&line->lock);
 		line->state = PBLK_LINESTATE_BAD;
+		trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 		spin_unlock(&line->lock);
 
 		list_add_tail(&line->list, &l_mg->bad_list);
@@ -1446,12 +1496,32 @@ retry_setup:
 	return line;
 }
 
+void pblk_ppa_to_line_put(struct pblk *pblk, struct ppa_addr ppa)
+{
+	struct pblk_line *line;
+
+	line = pblk_ppa_to_line(pblk, ppa);
+	kref_put(&line->ref, pblk_line_put_wq);
+}
+
+void pblk_rq_to_line_put(struct pblk *pblk, struct nvm_rq *rqd)
+{
+	struct ppa_addr *ppa_list;
+	int i;
+
+	ppa_list = (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr;
+
+	for (i = 0; i < rqd->nr_ppas; i++)
+		pblk_ppa_to_line_put(pblk, ppa_list[i]);
+}
+
 static void pblk_stop_writes(struct pblk *pblk, struct pblk_line *line)
 {
 	lockdep_assert_held(&pblk->l_mg.free_lock);
 
 	pblk_set_space_limit(pblk);
 	pblk->state = PBLK_STATE_STOPPING;
+	trace_pblk_state(pblk_disk_name(pblk), pblk->state);
 }
 
 static void pblk_line_close_meta_sync(struct pblk *pblk)
@@ -1501,6 +1571,7 @@ void __pblk_pipeline_flush(struct pblk *pblk)
 		return;
 	}
 	pblk->state = PBLK_STATE_RECOVERING;
+	trace_pblk_state(pblk_disk_name(pblk), pblk->state);
 	spin_unlock(&l_mg->free_lock);
 
 	pblk_flush_writer(pblk);
@@ -1522,6 +1593,7 @@ void __pblk_pipeline_stop(struct pblk *pblk)
 
 	spin_lock(&l_mg->free_lock);
 	pblk->state = PBLK_STATE_STOPPED;
+	trace_pblk_state(pblk_disk_name(pblk), pblk->state);
 	l_mg->data_line = NULL;
 	l_mg->data_next = NULL;
 	spin_unlock(&l_mg->free_lock);
@@ -1539,13 +1611,14 @@ struct pblk_line *pblk_line_replace_data(struct pblk *pblk)
 	struct pblk_line *cur, *new = NULL;
 	unsigned int left_seblks;
 
-	cur = l_mg->data_line;
 	new = l_mg->data_next;
 	if (!new)
 		goto out;
-	l_mg->data_line = new;
 
 	spin_lock(&l_mg->free_lock);
+	cur = l_mg->data_line;
+	l_mg->data_line = new;
+
 	pblk_line_setup_metadata(new, l_mg, &pblk->lm);
 	spin_unlock(&l_mg->free_lock);
 
@@ -1612,6 +1685,8 @@ static void __pblk_line_put(struct pblk *pblk, struct pblk_line *line)
 	spin_lock(&line->lock);
 	WARN_ON(line->state != PBLK_LINESTATE_GC);
 	line->state = PBLK_LINESTATE_FREE;
+	trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 	line->gc_group = PBLK_LINEGC_NONE;
 	pblk_line_free(line);
 
@@ -1680,6 +1755,9 @@ int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr ppa)
 	rqd->end_io = pblk_end_io_erase;
 	rqd->private = pblk;
 
+	trace_pblk_chunk_reset(pblk_disk_name(pblk),
+				&ppa, PBLK_CHUNK_RESET_START);
+
 	/* The write thread schedules erases so that it minimizes disturbances
 	 * with writes. Thus, there is no need to take the LUN semaphore.
 	 */
@@ -1689,7 +1767,7 @@ int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr ppa)
 		struct nvm_geo *geo = &dev->geo;
 
 		pblk_err(pblk, "could not async erase line:%d,blk:%d\n",
-					pblk_ppa_to_line(ppa),
+					pblk_ppa_to_line_id(ppa),
 					pblk_ppa_to_pos(geo, ppa));
 	}
 
@@ -1741,10 +1819,9 @@ void pblk_line_close(struct pblk *pblk, struct pblk_line *line)
 	WARN_ON(line->state != PBLK_LINESTATE_OPEN);
 	line->state = PBLK_LINESTATE_CLOSED;
 	move_list = pblk_line_gc_list(pblk, line);
-
 	list_add_tail(&line->list, move_list);
 
-	kfree(line->map_bitmap);
+	mempool_free(line->map_bitmap, l_mg->bitmap_pool);
 	line->map_bitmap = NULL;
 	line->smeta = NULL;
 	line->emeta = NULL;
@@ -1760,6 +1837,9 @@ void pblk_line_close(struct pblk *pblk, struct pblk_line *line)
 
 	spin_unlock(&line->lock);
 	spin_unlock(&l_mg->gc_lock);
+
+	trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 }
 
 void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line)
@@ -1778,6 +1858,17 @@ void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line)
 	wa->pad = cpu_to_le64(atomic64_read(&pblk->pad_wa));
 	wa->gc = cpu_to_le64(atomic64_read(&pblk->gc_wa));
 
+	if (le32_to_cpu(emeta_buf->header.identifier) != PBLK_MAGIC) {
+		emeta_buf->header.identifier = cpu_to_le32(PBLK_MAGIC);
+		memcpy(emeta_buf->header.uuid, pblk->instance_uuid, 16);
+		emeta_buf->header.id = cpu_to_le32(line->id);
+		emeta_buf->header.type = cpu_to_le16(line->type);
+		emeta_buf->header.version_major = EMETA_VERSION_MAJOR;
+		emeta_buf->header.version_minor = EMETA_VERSION_MINOR;
+		emeta_buf->header.crc = cpu_to_le32(
+			pblk_calc_meta_header_crc(pblk, &emeta_buf->header));
+	}
+
 	emeta_buf->nr_valid_lbas = cpu_to_le64(line->nr_valid_lbas);
 	emeta_buf->crc = cpu_to_le32(pblk_calc_emeta_crc(pblk, emeta_buf));
 
@@ -1795,8 +1886,6 @@ void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line)
 	spin_unlock(&l_mg->close_lock);
 
 	pblk_line_should_sync_meta(pblk);
-
-
 }
 
 static void pblk_save_lba_list(struct pblk *pblk, struct pblk_line *line)
@@ -1847,8 +1936,7 @@ void pblk_gen_run_ws(struct pblk *pblk, struct pblk_line *line, void *priv,
 	queue_work(wq, &line_ws->ws);
 }
 
-static void __pblk_down_page(struct pblk *pblk, struct ppa_addr *ppa_list,
-			     int nr_ppas, int pos)
+static void __pblk_down_chunk(struct pblk *pblk, int pos)
 {
 	struct pblk_lun *rlun = &pblk->luns[pos];
 	int ret;
@@ -1857,13 +1945,6 @@ static void __pblk_down_page(struct pblk *pblk, struct ppa_addr *ppa_list,
 	 * Only send one inflight I/O per LUN. Since we map at a page
 	 * granurality, all ppas in the I/O will map to the same LUN
 	 */
-#ifdef CONFIG_NVM_PBLK_DEBUG
-	int i;
-
-	for (i = 1; i < nr_ppas; i++)
-		WARN_ON(ppa_list[0].a.lun != ppa_list[i].a.lun ||
-				ppa_list[0].a.ch != ppa_list[i].a.ch);
-#endif
 
 	ret = down_timeout(&rlun->wr_sem, msecs_to_jiffies(30000));
 	if (ret == -ETIME || ret == -EINTR)
@@ -1871,21 +1952,21 @@ static void __pblk_down_page(struct pblk *pblk, struct ppa_addr *ppa_list,
 				-ret);
 }
 
-void pblk_down_page(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas)
+void pblk_down_chunk(struct pblk *pblk, struct ppa_addr ppa)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
-	int pos = pblk_ppa_to_pos(geo, ppa_list[0]);
+	int pos = pblk_ppa_to_pos(geo, ppa);
 
-	__pblk_down_page(pblk, ppa_list, nr_ppas, pos);
+	__pblk_down_chunk(pblk, pos);
 }
 
-void pblk_down_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
+void pblk_down_rq(struct pblk *pblk, struct ppa_addr ppa,
 		  unsigned long *lun_bitmap)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
-	int pos = pblk_ppa_to_pos(geo, ppa_list[0]);
+	int pos = pblk_ppa_to_pos(geo, ppa);
 
 	/* If the LUN has been locked for this same request, do no attempt to
 	 * lock it again
@@ -1893,30 +1974,21 @@ void pblk_down_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
 	if (test_and_set_bit(pos, lun_bitmap))
 		return;
 
-	__pblk_down_page(pblk, ppa_list, nr_ppas, pos);
+	__pblk_down_chunk(pblk, pos);
 }
 
-void pblk_up_page(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas)
+void pblk_up_chunk(struct pblk *pblk, struct ppa_addr ppa)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
 	struct pblk_lun *rlun;
-	int pos = pblk_ppa_to_pos(geo, ppa_list[0]);
-
-#ifdef CONFIG_NVM_PBLK_DEBUG
-	int i;
-
-	for (i = 1; i < nr_ppas; i++)
-		WARN_ON(ppa_list[0].a.lun != ppa_list[i].a.lun ||
-				ppa_list[0].a.ch != ppa_list[i].a.ch);
-#endif
+	int pos = pblk_ppa_to_pos(geo, ppa);
 
 	rlun = &pblk->luns[pos];
 	up(&rlun->wr_sem);
 }
 
-void pblk_up_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
-		unsigned long *lun_bitmap)
+void pblk_up_rq(struct pblk *pblk, unsigned long *lun_bitmap)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
@@ -2060,8 +2132,7 @@ void pblk_lookup_l2p_seq(struct pblk *pblk, struct ppa_addr *ppas,
 
 		/* If the L2P entry maps to a line, the reference is valid */
 		if (!pblk_ppa_empty(ppa) && !pblk_addr_in_cache(ppa)) {
-			int line_id = pblk_ppa_to_line(ppa);
-			struct pblk_line *line = &pblk->lines[line_id];
+			struct pblk_line *line = pblk_ppa_to_line(pblk, ppa);
 
 			kref_get(&line->ref);
 		}
diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c
index 157c2567c9e8..2fa118c8eb71 100644
--- a/drivers/lightnvm/pblk-gc.c
+++ b/drivers/lightnvm/pblk-gc.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2016 CNEX Labs
  * Initial release: Javier Gonzalez <javier@cnexlabs.com>
@@ -16,8 +17,10 @@
  */
 
 #include "pblk.h"
+#include "pblk-trace.h"
 #include <linux/delay.h>
 
+
 static void pblk_gc_free_gc_rq(struct pblk_gc_rq *gc_rq)
 {
 	if (gc_rq->data)
@@ -64,6 +67,8 @@ static void pblk_put_line_back(struct pblk *pblk, struct pblk_line *line)
 	spin_lock(&line->lock);
 	WARN_ON(line->state != PBLK_LINESTATE_GC);
 	line->state = PBLK_LINESTATE_CLOSED;
+	trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 	move_list = pblk_line_gc_list(pblk, line);
 	spin_unlock(&line->lock);
 
@@ -144,7 +149,7 @@ static __le64 *get_lba_list_from_emeta(struct pblk *pblk,
 	if (!emeta_buf)
 		return NULL;
 
-	ret = pblk_line_read_emeta(pblk, line, emeta_buf);
+	ret = pblk_line_emeta_read(pblk, line, emeta_buf);
 	if (ret) {
 		pblk_err(pblk, "line %d read emeta failed (%d)\n",
 				line->id, ret);
@@ -405,6 +410,8 @@ void pblk_gc_free_full_lines(struct pblk *pblk)
 		spin_lock(&line->lock);
 		WARN_ON(line->state != PBLK_LINESTATE_CLOSED);
 		line->state = PBLK_LINESTATE_GC;
+		trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 		spin_unlock(&line->lock);
 
 		list_del(&line->list);
@@ -451,6 +458,8 @@ next_gc_group:
 		spin_lock(&line->lock);
 		WARN_ON(line->state != PBLK_LINESTATE_CLOSED);
 		line->state = PBLK_LINESTATE_GC;
+		trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 		spin_unlock(&line->lock);
 
 		list_del(&line->list);
diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index 537e98f2b24a..13822594647c 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2015 IT University of Copenhagen (rrpc.c)
  * Copyright (C) 2016 CNEX Labs
@@ -19,15 +20,31 @@
  */
 
 #include "pblk.h"
+#include "pblk-trace.h"
 
 static unsigned int write_buffer_size;
 
 module_param(write_buffer_size, uint, 0644);
 MODULE_PARM_DESC(write_buffer_size, "number of entries in a write buffer");
 
-static struct kmem_cache *pblk_ws_cache, *pblk_rec_cache, *pblk_g_rq_cache,
-				*pblk_w_rq_cache;
-static DECLARE_RWSEM(pblk_lock);
+struct pblk_global_caches {
+	struct kmem_cache	*ws;
+	struct kmem_cache	*rec;
+	struct kmem_cache	*g_rq;
+	struct kmem_cache	*w_rq;
+
+	struct kref		kref;
+
+	struct mutex		mutex; /* Ensures consistency between
+					* caches and kref
+					*/
+};
+
+static struct pblk_global_caches pblk_caches = {
+	.mutex = __MUTEX_INITIALIZER(pblk_caches.mutex),
+	.kref = KREF_INIT(0),
+};
+
 struct bio_set pblk_bio_set;
 
 static int pblk_rw_io(struct request_queue *q, struct pblk *pblk,
@@ -168,36 +185,26 @@ static void pblk_rwb_free(struct pblk *pblk)
 	if (pblk_rb_tear_down_check(&pblk->rwb))
 		pblk_err(pblk, "write buffer error on tear down\n");
 
-	pblk_rb_data_free(&pblk->rwb);
-	vfree(pblk_rb_entries_ref(&pblk->rwb));
+	pblk_rb_free(&pblk->rwb);
 }
 
 static int pblk_rwb_init(struct pblk *pblk)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
-	struct pblk_rb_entry *entries;
-	unsigned long nr_entries, buffer_size;
-	unsigned int power_size, power_seg_sz;
-	int pgs_in_buffer;
+	unsigned long buffer_size;
+	int pgs_in_buffer, threshold;
 
-	pgs_in_buffer = max(geo->mw_cunits, geo->ws_opt) * geo->all_luns;
+	threshold = geo->mw_cunits * geo->all_luns;
+	pgs_in_buffer = (max(geo->mw_cunits, geo->ws_opt) + geo->ws_opt)
+								* geo->all_luns;
 
 	if (write_buffer_size && (write_buffer_size > pgs_in_buffer))
 		buffer_size = write_buffer_size;
 	else
 		buffer_size = pgs_in_buffer;
 
-	nr_entries = pblk_rb_calculate_size(buffer_size);
-
-	entries = vzalloc(array_size(nr_entries, sizeof(struct pblk_rb_entry)));
-	if (!entries)
-		return -ENOMEM;
-
-	power_size = get_count_order(nr_entries);
-	power_seg_sz = get_count_order(geo->csecs);
-
-	return pblk_rb_init(&pblk->rwb, entries, power_size, power_seg_sz);
+	return pblk_rb_init(&pblk->rwb, buffer_size, threshold, geo->csecs);
 }
 
 /* Minimum pages needed within a lun */
@@ -306,53 +313,80 @@ static int pblk_set_addrf(struct pblk *pblk)
 	return 0;
 }
 
-static int pblk_init_global_caches(struct pblk *pblk)
+static int pblk_create_global_caches(void)
 {
-	down_write(&pblk_lock);
-	pblk_ws_cache = kmem_cache_create("pblk_blk_ws",
+
+	pblk_caches.ws = kmem_cache_create("pblk_blk_ws",
 				sizeof(struct pblk_line_ws), 0, 0, NULL);
-	if (!pblk_ws_cache) {
-		up_write(&pblk_lock);
+	if (!pblk_caches.ws)
 		return -ENOMEM;
-	}
 
-	pblk_rec_cache = kmem_cache_create("pblk_rec",
+	pblk_caches.rec = kmem_cache_create("pblk_rec",
 				sizeof(struct pblk_rec_ctx), 0, 0, NULL);
-	if (!pblk_rec_cache) {
-		kmem_cache_destroy(pblk_ws_cache);
-		up_write(&pblk_lock);
-		return -ENOMEM;
-	}
+	if (!pblk_caches.rec)
+		goto fail_destroy_ws;
 
-	pblk_g_rq_cache = kmem_cache_create("pblk_g_rq", pblk_g_rq_size,
+	pblk_caches.g_rq = kmem_cache_create("pblk_g_rq", pblk_g_rq_size,
 				0, 0, NULL);
-	if (!pblk_g_rq_cache) {
-		kmem_cache_destroy(pblk_ws_cache);
-		kmem_cache_destroy(pblk_rec_cache);
-		up_write(&pblk_lock);
-		return -ENOMEM;
-	}
+	if (!pblk_caches.g_rq)
+		goto fail_destroy_rec;
 
-	pblk_w_rq_cache = kmem_cache_create("pblk_w_rq", pblk_w_rq_size,
+	pblk_caches.w_rq = kmem_cache_create("pblk_w_rq", pblk_w_rq_size,
 				0, 0, NULL);
-	if (!pblk_w_rq_cache) {
-		kmem_cache_destroy(pblk_ws_cache);
-		kmem_cache_destroy(pblk_rec_cache);
-		kmem_cache_destroy(pblk_g_rq_cache);
-		up_write(&pblk_lock);
-		return -ENOMEM;
-	}
-	up_write(&pblk_lock);
+	if (!pblk_caches.w_rq)
+		goto fail_destroy_g_rq;
 
 	return 0;
+
+fail_destroy_g_rq:
+	kmem_cache_destroy(pblk_caches.g_rq);
+fail_destroy_rec:
+	kmem_cache_destroy(pblk_caches.rec);
+fail_destroy_ws:
+	kmem_cache_destroy(pblk_caches.ws);
+
+	return -ENOMEM;
 }
 
-static void pblk_free_global_caches(struct pblk *pblk)
+static int pblk_get_global_caches(void)
 {
-	kmem_cache_destroy(pblk_ws_cache);
-	kmem_cache_destroy(pblk_rec_cache);
-	kmem_cache_destroy(pblk_g_rq_cache);
-	kmem_cache_destroy(pblk_w_rq_cache);
+	int ret;
+
+	mutex_lock(&pblk_caches.mutex);
+
+	if (kref_read(&pblk_caches.kref) > 0) {
+		kref_get(&pblk_caches.kref);
+		mutex_unlock(&pblk_caches.mutex);
+		return 0;
+	}
+
+	ret = pblk_create_global_caches();
+
+	if (!ret)
+		kref_get(&pblk_caches.kref);
+
+	mutex_unlock(&pblk_caches.mutex);
+
+	return ret;
+}
+
+static void pblk_destroy_global_caches(struct kref *ref)
+{
+	struct pblk_global_caches *c;
+
+	c = container_of(ref, struct pblk_global_caches, kref);
+
+	kmem_cache_destroy(c->ws);
+	kmem_cache_destroy(c->rec);
+	kmem_cache_destroy(c->g_rq);
+	kmem_cache_destroy(c->w_rq);
+}
+
+static void pblk_put_global_caches(void)
+{
+	mutex_lock(&pblk_caches.mutex);
+	kref_put(&pblk_caches.kref, pblk_destroy_global_caches);
+	mutex_unlock(&pblk_caches.mutex);
 }
 
 static int pblk_core_init(struct pblk *pblk)
@@ -371,23 +405,19 @@ static int pblk_core_init(struct pblk *pblk)
 	atomic64_set(&pblk->nr_flush, 0);
 	pblk->nr_flush_rst = 0;
 
-	pblk->min_write_pgs = geo->ws_opt * (geo->csecs / PAGE_SIZE);
+	pblk->min_write_pgs = geo->ws_opt;
 	max_write_ppas = pblk->min_write_pgs * geo->all_luns;
 	pblk->max_write_pgs = min_t(int, max_write_ppas, NVM_MAX_VLBA);
+	pblk->max_write_pgs = min_t(int, pblk->max_write_pgs,
+		queue_max_hw_sectors(dev->q) / (geo->csecs >> SECTOR_SHIFT));
 	pblk_set_sec_per_write(pblk, pblk->min_write_pgs);
 
-	if (pblk->max_write_pgs > PBLK_MAX_REQ_ADDRS) {
-		pblk_err(pblk, "vector list too big(%u > %u)\n",
-				pblk->max_write_pgs, PBLK_MAX_REQ_ADDRS);
-		return -EINVAL;
-	}
-
 	pblk->pad_dist = kcalloc(pblk->min_write_pgs - 1, sizeof(atomic64_t),
 								GFP_KERNEL);
 	if (!pblk->pad_dist)
 		return -ENOMEM;
 
-	if (pblk_init_global_caches(pblk))
+	if (pblk_get_global_caches())
 		goto fail_free_pad_dist;
 
 	/* Internal bios can be at most the sectors signaled by the device. */
@@ -396,27 +426,27 @@ static int pblk_core_init(struct pblk *pblk)
 		goto free_global_caches;
 
 	ret = mempool_init_slab_pool(&pblk->gen_ws_pool, PBLK_GEN_WS_POOL_SIZE,
-				     pblk_ws_cache);
+				     pblk_caches.ws);
 	if (ret)
 		goto free_page_bio_pool;
 
 	ret = mempool_init_slab_pool(&pblk->rec_pool, geo->all_luns,
-				     pblk_rec_cache);
+				     pblk_caches.rec);
 	if (ret)
 		goto free_gen_ws_pool;
 
 	ret = mempool_init_slab_pool(&pblk->r_rq_pool, geo->all_luns,
-				     pblk_g_rq_cache);
+				     pblk_caches.g_rq);
 	if (ret)
 		goto free_rec_pool;
 
 	ret = mempool_init_slab_pool(&pblk->e_rq_pool, geo->all_luns,
-				     pblk_g_rq_cache);
+				     pblk_caches.g_rq);
 	if (ret)
 		goto free_r_rq_pool;
 
 	ret = mempool_init_slab_pool(&pblk->w_rq_pool, geo->all_luns,
-				     pblk_w_rq_cache);
+				     pblk_caches.w_rq);
 	if (ret)
 		goto free_e_rq_pool;
 
@@ -462,7 +492,7 @@ free_gen_ws_pool:
 free_page_bio_pool:
 	mempool_exit(&pblk->page_bio_pool);
 free_global_caches:
-	pblk_free_global_caches(pblk);
+	pblk_put_global_caches();
 fail_free_pad_dist:
 	kfree(pblk->pad_dist);
 	return -ENOMEM;
@@ -486,7 +516,7 @@ static void pblk_core_free(struct pblk *pblk)
 	mempool_exit(&pblk->e_rq_pool);
 	mempool_exit(&pblk->w_rq_pool);
 
-	pblk_free_global_caches(pblk);
+	pblk_put_global_caches();
 	kfree(pblk->pad_dist);
 }
 
@@ -504,6 +534,9 @@ static void pblk_line_mg_free(struct pblk *pblk)
 		pblk_mfree(l_mg->eline_meta[i]->buf, l_mg->emeta_alloc_type);
 		kfree(l_mg->eline_meta[i]);
 	}
+
+	mempool_destroy(l_mg->bitmap_pool);
+	kmem_cache_destroy(l_mg->bitmap_cache);
 }
 
 static void pblk_line_meta_free(struct pblk_line_mgmt *l_mg,
@@ -540,67 +573,6 @@ static void pblk_lines_free(struct pblk *pblk)
 	kfree(pblk->lines);
 }
 
-static int pblk_bb_get_tbl(struct nvm_tgt_dev *dev, struct pblk_lun *rlun,
-			   u8 *blks, int nr_blks)
-{
-	struct ppa_addr ppa;
-	int ret;
-
-	ppa.ppa = 0;
-	ppa.g.ch = rlun->bppa.g.ch;
-	ppa.g.lun = rlun->bppa.g.lun;
-
-	ret = nvm_get_tgt_bb_tbl(dev, ppa, blks);
-	if (ret)
-		return ret;
-
-	nr_blks = nvm_bb_tbl_fold(dev->parent, blks, nr_blks);
-	if (nr_blks < 0)
-		return -EIO;
-
-	return 0;
-}
-
-static void *pblk_bb_get_meta(struct pblk *pblk)
-{
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-	u8 *meta;
-	int i, nr_blks, blk_per_lun;
-	int ret;
-
-	blk_per_lun = geo->num_chk * geo->pln_mode;
-	nr_blks = blk_per_lun * geo->all_luns;
-
-	meta = kmalloc(nr_blks, GFP_KERNEL);
-	if (!meta)
-		return ERR_PTR(-ENOMEM);
-
-	for (i = 0; i < geo->all_luns; i++) {
-		struct pblk_lun *rlun = &pblk->luns[i];
-		u8 *meta_pos = meta + i * blk_per_lun;
-
-		ret = pblk_bb_get_tbl(dev, rlun, meta_pos, blk_per_lun);
-		if (ret) {
-			kfree(meta);
-			return ERR_PTR(-EIO);
-		}
-	}
-
-	return meta;
-}
-
-static void *pblk_chunk_get_meta(struct pblk *pblk)
-{
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-
-	if (geo->version == NVM_OCSSD_SPEC_12)
-		return pblk_bb_get_meta(pblk);
-	else
-		return pblk_chunk_get_info(pblk);
-}
-
 static int pblk_luns_init(struct pblk *pblk)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
@@ -699,51 +671,7 @@ static void pblk_set_provision(struct pblk *pblk, long nr_free_blks)
 	atomic_set(&pblk->rl.free_user_blocks, nr_free_blks);
 }
 
-static int pblk_setup_line_meta_12(struct pblk *pblk, struct pblk_line *line,
-				   void *chunk_meta)
-{
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-	struct pblk_line_meta *lm = &pblk->lm;
-	int i, chk_per_lun, nr_bad_chks = 0;
-
-	chk_per_lun = geo->num_chk * geo->pln_mode;
-
-	for (i = 0; i < lm->blk_per_line; i++) {
-		struct pblk_lun *rlun = &pblk->luns[i];
-		struct nvm_chk_meta *chunk;
-		int pos = pblk_ppa_to_pos(geo, rlun->bppa);
-		u8 *lun_bb_meta = chunk_meta + pos * chk_per_lun;
-
-		chunk = &line->chks[pos];
-
-		/*
-		 * In 1.2 spec. chunk state is not persisted by the device. Thus
-		 * some of the values are reset each time pblk is instantiated,
-		 * so we have to assume that the block is closed.
-		 */
-		if (lun_bb_meta[line->id] == NVM_BLK_T_FREE)
-			chunk->state =  NVM_CHK_ST_CLOSED;
-		else
-			chunk->state = NVM_CHK_ST_OFFLINE;
-
-		chunk->type = NVM_CHK_TP_W_SEQ;
-		chunk->wi = 0;
-		chunk->slba = -1;
-		chunk->cnlb = geo->clba;
-		chunk->wp = 0;
-
-		if (!(chunk->state & NVM_CHK_ST_OFFLINE))
-			continue;
-
-		set_bit(pos, line->blk_bitmap);
-		nr_bad_chks++;
-	}
-
-	return nr_bad_chks;
-}
-
-static int pblk_setup_line_meta_20(struct pblk *pblk, struct pblk_line *line,
+static int pblk_setup_line_meta_chk(struct pblk *pblk, struct pblk_line *line,
 				   struct nvm_chk_meta *meta)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
@@ -772,6 +700,9 @@ static int pblk_setup_line_meta_20(struct pblk *pblk, struct pblk_line *line,
 		chunk->cnlb = chunk_meta->cnlb;
 		chunk->wp = chunk_meta->wp;
 
+		trace_pblk_chunk_state(pblk_disk_name(pblk), &ppa,
+					chunk->state);
+
 		if (chunk->type & NVM_CHK_TP_SZ_SPEC) {
 			WARN_ONCE(1, "pblk: custom-sized chunks unsupported\n");
 			continue;
@@ -790,8 +721,6 @@ static int pblk_setup_line_meta_20(struct pblk *pblk, struct pblk_line *line,
 static long pblk_setup_line_meta(struct pblk *pblk, struct pblk_line *line,
 				 void *chunk_meta, int line_id)
 {
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
 	struct pblk_line_mgmt *l_mg = &pblk->l_mg;
 	struct pblk_line_meta *lm = &pblk->lm;
 	long nr_bad_chks, chk_in_line;
@@ -804,10 +733,7 @@ static long pblk_setup_line_meta(struct pblk *pblk, struct pblk_line *line,
 	line->vsc = &l_mg->vsc_list[line_id];
 	spin_lock_init(&line->lock);
 
-	if (geo->version == NVM_OCSSD_SPEC_12)
-		nr_bad_chks = pblk_setup_line_meta_12(pblk, line, chunk_meta);
-	else
-		nr_bad_chks = pblk_setup_line_meta_20(pblk, line, chunk_meta);
+	nr_bad_chks = pblk_setup_line_meta_chk(pblk, line, chunk_meta);
 
 	chk_in_line = lm->blk_per_line - nr_bad_chks;
 	if (nr_bad_chks < 0 || nr_bad_chks > lm->blk_per_line ||
@@ -913,6 +839,17 @@ static int pblk_line_mg_init(struct pblk *pblk)
 			goto fail_free_smeta;
 	}
 
+	l_mg->bitmap_cache = kmem_cache_create("pblk_lm_bitmap",
+			lm->sec_bitmap_len, 0, 0, NULL);
+	if (!l_mg->bitmap_cache)
+		goto fail_free_smeta;
+
+	/* the bitmap pool is used for both valid and map bitmaps */
+	l_mg->bitmap_pool = mempool_create_slab_pool(PBLK_DATA_LINES * 2,
+				l_mg->bitmap_cache);
+	if (!l_mg->bitmap_pool)
+		goto fail_destroy_bitmap_cache;
+
 	/* emeta allocates three different buffers for managing metadata with
 	 * in-memory and in-media layouts
 	 */
@@ -965,6 +902,10 @@ fail_free_emeta:
 			kfree(l_mg->eline_meta[i]->buf);
 		kfree(l_mg->eline_meta[i]);
 	}
+
+	mempool_destroy(l_mg->bitmap_pool);
+fail_destroy_bitmap_cache:
+	kmem_cache_destroy(l_mg->bitmap_cache);
 fail_free_smeta:
 	for (i = 0; i < PBLK_DATA_LINES; i++)
 		kfree(l_mg->sline_meta[i]);
@@ -1058,7 +999,7 @@ static int pblk_lines_init(struct pblk *pblk)
 	if (ret)
 		goto fail_free_meta;
 
-	chunk_meta = pblk_chunk_get_meta(pblk);
+	chunk_meta = pblk_get_chunk_meta(pblk);
 	if (IS_ERR(chunk_meta)) {
 		ret = PTR_ERR(chunk_meta);
 		goto fail_free_luns;
@@ -1079,16 +1020,20 @@ static int pblk_lines_init(struct pblk *pblk)
 			goto fail_free_lines;
 
 		nr_free_chks += pblk_setup_line_meta(pblk, line, chunk_meta, i);
+
+		trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+								line->state);
 	}
 
 	if (!nr_free_chks) {
 		pblk_err(pblk, "too many bad blocks prevent for sane instance\n");
-		return -EINTR;
+		ret = -EINTR;
+		goto fail_free_lines;
 	}
 
 	pblk_set_provision(pblk, nr_free_chks);
 
-	kfree(chunk_meta);
+	vfree(chunk_meta);
 	return 0;
 
 fail_free_lines:
@@ -1165,7 +1110,6 @@ static void pblk_exit(void *private, bool graceful)
 {
 	struct pblk *pblk = private;
 
-	down_write(&pblk_lock);
 	pblk_gc_exit(pblk, graceful);
 	pblk_tear_down(pblk, graceful);
 
@@ -1174,7 +1118,6 @@ static void pblk_exit(void *private, bool graceful)
 #endif
 
 	pblk_free(pblk);
-	up_write(&pblk_lock);
 }
 
 static sector_t pblk_capacity(void *private)
@@ -1200,6 +1143,7 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk,
 	pblk->dev = dev;
 	pblk->disk = tdisk;
 	pblk->state = PBLK_STATE_RUNNING;
+	trace_pblk_state(pblk_disk_name(pblk), pblk->state);
 	pblk->gc.gc_enabled = 0;
 
 	if (!(geo->version == NVM_OCSSD_SPEC_12 ||
@@ -1210,13 +1154,6 @@ static void *pblk_init(struct nvm_tgt_dev *dev, struct gendisk *tdisk,
 		return ERR_PTR(-EINVAL);
 	}
 
-	if (geo->version == NVM_OCSSD_SPEC_12 && geo->dom & NVM_RSP_L2P) {
-		pblk_err(pblk, "host-side L2P table not supported. (%x)\n",
-							geo->dom);
-		kfree(pblk);
-		return ERR_PTR(-EINVAL);
-	}
-
 	spin_lock_init(&pblk->resubmit_lock);
 	spin_lock_init(&pblk->trans_lock);
 	spin_lock_init(&pblk->lock);
diff --git a/drivers/lightnvm/pblk-map.c b/drivers/lightnvm/pblk-map.c
index 953ca31dda68..6dcbd44e3acb 100644
--- a/drivers/lightnvm/pblk-map.c
+++ b/drivers/lightnvm/pblk-map.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2016 CNEX Labs
  * Initial release: Javier Gonzalez <javier@cnexlabs.com>
@@ -79,7 +80,7 @@ static int pblk_map_page_data(struct pblk *pblk, unsigned int sentry,
 		}
 	}
 
-	pblk_down_rq(pblk, ppa_list, nr_secs, lun_bitmap);
+	pblk_down_rq(pblk, ppa_list[0], lun_bitmap);
 	return 0;
 }
 
@@ -88,13 +89,14 @@ void pblk_map_rq(struct pblk *pblk, struct nvm_rq *rqd, unsigned int sentry,
 		 unsigned int off)
 {
 	struct pblk_sec_meta *meta_list = rqd->meta_list;
+	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
 	unsigned int map_secs;
 	int min = pblk->min_write_pgs;
 	int i;
 
 	for (i = off; i < rqd->nr_ppas; i += min) {
 		map_secs = (i + min > valid_secs) ? (valid_secs % min) : min;
-		if (pblk_map_page_data(pblk, sentry + i, &rqd->ppa_list[i],
+		if (pblk_map_page_data(pblk, sentry + i, &ppa_list[i],
 					lun_bitmap, &meta_list[i], map_secs)) {
 			bio_put(rqd->bio);
 			pblk_free_rqd(pblk, rqd, PBLK_WRITE);
@@ -112,6 +114,7 @@ void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd,
 	struct nvm_geo *geo = &dev->geo;
 	struct pblk_line_meta *lm = &pblk->lm;
 	struct pblk_sec_meta *meta_list = rqd->meta_list;
+	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
 	struct pblk_line *e_line, *d_line;
 	unsigned int map_secs;
 	int min = pblk->min_write_pgs;
@@ -119,14 +122,14 @@ void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd,
 
 	for (i = 0; i < rqd->nr_ppas; i += min) {
 		map_secs = (i + min > valid_secs) ? (valid_secs % min) : min;
-		if (pblk_map_page_data(pblk, sentry + i, &rqd->ppa_list[i],
+		if (pblk_map_page_data(pblk, sentry + i, &ppa_list[i],
 					lun_bitmap, &meta_list[i], map_secs)) {
 			bio_put(rqd->bio);
 			pblk_free_rqd(pblk, rqd, PBLK_WRITE);
 			pblk_pipeline_stop(pblk);
 		}
 
-		erase_lun = pblk_ppa_to_pos(geo, rqd->ppa_list[i]);
+		erase_lun = pblk_ppa_to_pos(geo, ppa_list[i]);
 
 		/* line can change after page map. We might also be writing the
 		 * last line.
@@ -141,7 +144,7 @@ void pblk_map_erase_rq(struct pblk *pblk, struct nvm_rq *rqd,
 			set_bit(erase_lun, e_line->erase_bitmap);
 			atomic_dec(&e_line->left_eblks);
 
-			*erase_ppa = rqd->ppa_list[i];
+			*erase_ppa = ppa_list[i];
 			erase_ppa->a.blk = e_line->id;
 
 			spin_unlock(&e_line->lock);
diff --git a/drivers/lightnvm/pblk-rb.c b/drivers/lightnvm/pblk-rb.c
index f6eec0212dfc..b1f4b51783f4 100644
--- a/drivers/lightnvm/pblk-rb.c
+++ b/drivers/lightnvm/pblk-rb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2016 CNEX Labs
  * Initial release: Javier Gonzalez <javier@cnexlabs.com>
@@ -22,7 +23,7 @@
 
 static DECLARE_RWSEM(pblk_rb_lock);
 
-void pblk_rb_data_free(struct pblk_rb *rb)
+static void pblk_rb_data_free(struct pblk_rb *rb)
 {
 	struct pblk_rb_pages *p, *t;
 
@@ -35,25 +36,51 @@ void pblk_rb_data_free(struct pblk_rb *rb)
 	up_write(&pblk_rb_lock);
 }
 
+void pblk_rb_free(struct pblk_rb *rb)
+{
+	pblk_rb_data_free(rb);
+	vfree(rb->entries);
+}
+
+/*
+ * pblk_rb_calculate_size -- calculate the size of the write buffer
+ */
+static unsigned int pblk_rb_calculate_size(unsigned int nr_entries)
+{
+	/* Alloc a write buffer that can at least fit 128 entries */
+	return (1 << max(get_count_order(nr_entries), 7));
+}
+
 /*
  * Initialize ring buffer. The data and metadata buffers must be previously
  * allocated and their size must be a power of two
  * (Documentation/core-api/circular-buffers.rst)
  */
-int pblk_rb_init(struct pblk_rb *rb, struct pblk_rb_entry *rb_entry_base,
-		 unsigned int power_size, unsigned int power_seg_sz)
+int pblk_rb_init(struct pblk_rb *rb, unsigned int size, unsigned int threshold,
+		 unsigned int seg_size)
 {
 	struct pblk *pblk = container_of(rb, struct pblk, rwb);
+	struct pblk_rb_entry *entries;
 	unsigned int init_entry = 0;
-	unsigned int alloc_order = power_size;
 	unsigned int max_order = MAX_ORDER - 1;
-	unsigned int order, iter;
+	unsigned int power_size, power_seg_sz;
+	unsigned int alloc_order, order, iter;
+	unsigned int nr_entries;
+
+	nr_entries = pblk_rb_calculate_size(size);
+	entries = vzalloc(array_size(nr_entries, sizeof(struct pblk_rb_entry)));
+	if (!entries)
+		return -ENOMEM;
+
+	power_size = get_count_order(size);
+	power_seg_sz = get_count_order(seg_size);
 
 	down_write(&pblk_rb_lock);
-	rb->entries = rb_entry_base;
+	rb->entries = entries;
 	rb->seg_size = (1 << power_seg_sz);
 	rb->nr_entries = (1 << power_size);
 	rb->mem = rb->subm = rb->sync = rb->l2p_update = 0;
+	rb->back_thres = threshold;
 	rb->flush_point = EMPTY_ENTRY;
 
 	spin_lock_init(&rb->w_lock);
@@ -61,6 +88,7 @@ int pblk_rb_init(struct pblk_rb *rb, struct pblk_rb_entry *rb_entry_base,
 
 	INIT_LIST_HEAD(&rb->pages);
 
+	alloc_order = power_size;
 	if (alloc_order >= max_order) {
 		order = max_order;
 		iter = (1 << (alloc_order - max_order));
@@ -79,6 +107,7 @@ int pblk_rb_init(struct pblk_rb *rb, struct pblk_rb_entry *rb_entry_base,
 		page_set = kmalloc(sizeof(struct pblk_rb_pages), GFP_KERNEL);
 		if (!page_set) {
 			up_write(&pblk_rb_lock);
+			vfree(entries);
 			return -ENOMEM;
 		}
 
@@ -88,6 +117,7 @@ int pblk_rb_init(struct pblk_rb *rb, struct pblk_rb_entry *rb_entry_base,
 			kfree(page_set);
 			pblk_rb_data_free(rb);
 			up_write(&pblk_rb_lock);
+			vfree(entries);
 			return -ENOMEM;
 		}
 		kaddr = page_address(page_set->pages);
@@ -124,20 +154,6 @@ int pblk_rb_init(struct pblk_rb *rb, struct pblk_rb_entry *rb_entry_base,
 	return 0;
 }
 
-/*
- * pblk_rb_calculate_size -- calculate the size of the write buffer
- */
-unsigned int pblk_rb_calculate_size(unsigned int nr_entries)
-{
-	/* Alloc a write buffer that can at least fit 128 entries */
-	return (1 << max(get_count_order(nr_entries), 7));
-}
-
-void *pblk_rb_entries_ref(struct pblk_rb *rb)
-{
-	return rb->entries;
-}
-
 static void clean_wctx(struct pblk_w_ctx *w_ctx)
 {
 	int flags;
@@ -168,6 +184,12 @@ static unsigned int pblk_rb_space(struct pblk_rb *rb)
 	return pblk_rb_ring_space(rb, mem, sync, rb->nr_entries);
 }
 
+unsigned int pblk_rb_ptr_wrap(struct pblk_rb *rb, unsigned int p,
+			      unsigned int nr_entries)
+{
+	return (p + nr_entries) & (rb->nr_entries - 1);
+}
+
 /*
  * Buffer count is calculated with respect to the submission entry signaling the
  * entries that are available to send to the media
@@ -194,8 +216,7 @@ unsigned int pblk_rb_read_commit(struct pblk_rb *rb, unsigned int nr_entries)
 
 	subm = READ_ONCE(rb->subm);
 	/* Commit read means updating submission pointer */
-	smp_store_release(&rb->subm,
-				(subm + nr_entries) & (rb->nr_entries - 1));
+	smp_store_release(&rb->subm, pblk_rb_ptr_wrap(rb, subm, nr_entries));
 
 	return subm;
 }
@@ -225,10 +246,10 @@ static int __pblk_rb_update_l2p(struct pblk_rb *rb, unsigned int to_update)
 		pblk_update_map_dev(pblk, w_ctx->lba, w_ctx->ppa,
 							entry->cacheline);
 
-		line = &pblk->lines[pblk_ppa_to_line(w_ctx->ppa)];
+		line = pblk_ppa_to_line(pblk, w_ctx->ppa);
 		kref_put(&line->ref, pblk_line_put);
 		clean_wctx(w_ctx);
-		rb->l2p_update = (rb->l2p_update + 1) & (rb->nr_entries - 1);
+		rb->l2p_update = pblk_rb_ptr_wrap(rb, rb->l2p_update, 1);
 	}
 
 	pblk_rl_out(&pblk->rl, user_io, gc_io);
@@ -385,11 +406,14 @@ static int __pblk_rb_may_write(struct pblk_rb *rb, unsigned int nr_entries,
 {
 	unsigned int mem;
 	unsigned int sync;
+	unsigned int threshold;
 
 	sync = READ_ONCE(rb->sync);
 	mem = READ_ONCE(rb->mem);
 
-	if (pblk_rb_ring_space(rb, mem, sync, rb->nr_entries) < nr_entries)
+	threshold = nr_entries + rb->back_thres;
+
+	if (pblk_rb_ring_space(rb, mem, sync, rb->nr_entries) < threshold)
 		return 0;
 
 	if (pblk_rb_update_l2p(rb, nr_entries, mem, sync))
@@ -407,7 +431,7 @@ static int pblk_rb_may_write(struct pblk_rb *rb, unsigned int nr_entries,
 		return 0;
 
 	/* Protect from read count */
-	smp_store_release(&rb->mem, (*pos + nr_entries) & (rb->nr_entries - 1));
+	smp_store_release(&rb->mem, pblk_rb_ptr_wrap(rb, *pos, nr_entries));
 	return 1;
 }
 
@@ -431,7 +455,7 @@ static int pblk_rb_may_write_flush(struct pblk_rb *rb, unsigned int nr_entries,
 	if (!__pblk_rb_may_write(rb, nr_entries, pos))
 		return 0;
 
-	mem = (*pos + nr_entries) & (rb->nr_entries - 1);
+	mem = pblk_rb_ptr_wrap(rb, *pos, nr_entries);
 	*io_ret = NVM_IO_DONE;
 
 	if (bio->bi_opf & REQ_PREFLUSH) {
@@ -571,7 +595,7 @@ try:
 		/* Release flags on context. Protect from writes */
 		smp_store_release(&entry->w_ctx.flags, flags);
 
-		pos = (pos + 1) & (rb->nr_entries - 1);
+		pos = pblk_rb_ptr_wrap(rb, pos, 1);
 	}
 
 	if (pad) {
@@ -651,7 +675,7 @@ out:
 
 struct pblk_w_ctx *pblk_rb_w_ctx(struct pblk_rb *rb, unsigned int pos)
 {
-	unsigned int entry = pos & (rb->nr_entries - 1);
+	unsigned int entry = pblk_rb_ptr_wrap(rb, pos, 0);
 
 	return &rb->entries[entry].w_ctx;
 }
@@ -697,7 +721,7 @@ unsigned int pblk_rb_sync_advance(struct pblk_rb *rb, unsigned int nr_entries)
 		}
 	}
 
-	sync = (sync + nr_entries) & (rb->nr_entries - 1);
+	sync = pblk_rb_ptr_wrap(rb, sync, nr_entries);
 
 	/* Protect from counts */
 	smp_store_release(&rb->sync, sync);
@@ -728,32 +752,6 @@ unsigned int pblk_rb_flush_point_count(struct pblk_rb *rb)
 	return (submitted < to_flush) ? (to_flush - submitted) : 0;
 }
 
-/*
- * Scan from the current position of the sync pointer to find the entry that
- * corresponds to the given ppa. This is necessary since write requests can be
- * completed out of order. The assumption is that the ppa is close to the sync
- * pointer thus the search will not take long.
- *
- * The caller of this function must guarantee that the sync pointer will no
- * reach the entry while it is using the metadata associated with it. With this
- * assumption in mind, there is no need to take the sync lock.
- */
-struct pblk_rb_entry *pblk_rb_sync_scan_entry(struct pblk_rb *rb,
-					      struct ppa_addr *ppa)
-{
-	unsigned int sync, subm, count;
-	unsigned int i;
-
-	sync = READ_ONCE(rb->sync);
-	subm = READ_ONCE(rb->subm);
-	count = pblk_rb_ring_count(subm, sync, rb->nr_entries);
-
-	for (i = 0; i < count; i++)
-		sync = (sync + 1) & (rb->nr_entries - 1);
-
-	return NULL;
-}
-
 int pblk_rb_tear_down_check(struct pblk_rb *rb)
 {
 	struct pblk_rb_entry *entry;
diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
index 5a46d7f9302f..9fba614adeeb 100644
--- a/drivers/lightnvm/pblk-read.c
+++ b/drivers/lightnvm/pblk-read.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2016 CNEX Labs
  * Initial release: Javier Gonzalez <javier@cnexlabs.com>
@@ -43,7 +44,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
 				 unsigned long *read_bitmap)
 {
 	struct pblk_sec_meta *meta_list = rqd->meta_list;
-	struct ppa_addr ppas[PBLK_MAX_REQ_ADDRS];
+	struct ppa_addr ppas[NVM_MAX_VLBA];
 	int nr_secs = rqd->nr_ppas;
 	bool advanced_bio = false;
 	int i, j = 0;
@@ -93,9 +94,7 @@ next:
 	}
 
 	if (pblk_io_aligned(pblk, nr_secs))
-		rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_SEQUENTIAL);
-	else
-		rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM);
+		rqd->is_seq = 1;
 
 #ifdef CONFIG_NVM_PBLK_DEBUG
 	atomic_long_add(nr_secs, &pblk->inflight_reads);
@@ -118,10 +117,9 @@ static void pblk_read_check_seq(struct pblk *pblk, struct nvm_rq *rqd,
 
 		if (lba != blba + i) {
 #ifdef CONFIG_NVM_PBLK_DEBUG
-			struct ppa_addr *p;
+			struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
 
-			p = (nr_lbas == 1) ? &rqd->ppa_list[i] : &rqd->ppa_addr;
-			print_ppa(pblk, p, "seq", i);
+			print_ppa(pblk, &ppa_list[i], "seq", i);
 #endif
 			pblk_err(pblk, "corrupted read LBA (%llu/%llu)\n",
 							lba, (u64)blba + i);
@@ -150,14 +148,12 @@ static void pblk_read_check_rand(struct pblk *pblk, struct nvm_rq *rqd,
 
 		if (lba != meta_lba) {
 #ifdef CONFIG_NVM_PBLK_DEBUG
-			struct ppa_addr *p;
-			int nr_ppas = rqd->nr_ppas;
+			struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
 
-			p = (nr_ppas == 1) ? &rqd->ppa_list[j] : &rqd->ppa_addr;
-			print_ppa(pblk, p, "seq", j);
+			print_ppa(pblk, &ppa_list[j], "rnd", j);
 #endif
 			pblk_err(pblk, "corrupted read LBA (%llu/%llu)\n",
-								lba, meta_lba);
+							meta_lba, lba);
 			WARN_ON(1);
 		}
 
@@ -167,22 +163,6 @@ static void pblk_read_check_rand(struct pblk *pblk, struct nvm_rq *rqd,
 	WARN_ONCE(j != rqd->nr_ppas, "pblk: corrupted random request\n");
 }
 
-static void pblk_read_put_rqd_kref(struct pblk *pblk, struct nvm_rq *rqd)
-{
-	struct ppa_addr *ppa_list;
-	int i;
-
-	ppa_list = (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr;
-
-	for (i = 0; i < rqd->nr_ppas; i++) {
-		struct ppa_addr ppa = ppa_list[i];
-		struct pblk_line *line;
-
-		line = &pblk->lines[pblk_ppa_to_line(ppa)];
-		kref_put(&line->ref, pblk_line_put_wq);
-	}
-}
-
 static void pblk_end_user_read(struct bio *bio)
 {
 #ifdef CONFIG_NVM_PBLK_DEBUG
@@ -210,7 +190,7 @@ static void __pblk_end_io_read(struct pblk *pblk, struct nvm_rq *rqd,
 		bio_put(int_bio);
 
 	if (put_line)
-		pblk_read_put_rqd_kref(pblk, rqd);
+		pblk_rq_to_line_put(pblk, rqd);
 
 #ifdef CONFIG_NVM_PBLK_DEBUG
 	atomic_long_add(rqd->nr_ppas, &pblk->sync_reads);
@@ -270,9 +250,9 @@ static void pblk_end_partial_read(struct nvm_rq *rqd)
 	i = 0;
 	hole = find_first_zero_bit(read_bitmap, nr_secs);
 	do {
-		int line_id = pblk_ppa_to_line(rqd->ppa_list[i]);
-		struct pblk_line *line = &pblk->lines[line_id];
+		struct pblk_line *line;
 
+		line = pblk_ppa_to_line(pblk, rqd->ppa_list[i]);
 		kref_put(&line->ref, pblk_line_put);
 
 		meta_list[hole].lba = lba_list_media[i];
@@ -344,7 +324,6 @@ static int pblk_setup_partial_read(struct pblk *pblk, struct nvm_rq *rqd,
 
 	rqd->bio = new_bio;
 	rqd->nr_ppas = nr_holes;
-	rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM);
 
 	pr_ctx->ppa_ptr = NULL;
 	pr_ctx->orig_bio = bio;
@@ -438,8 +417,6 @@ retry:
 	} else {
 		rqd->ppa_addr = ppa;
 	}
-
-	rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM);
 }
 
 int pblk_submit_read(struct pblk *pblk, struct bio *bio)
@@ -454,13 +431,6 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio)
 	DECLARE_BITMAP(read_bitmap, NVM_MAX_VLBA);
 	int ret = NVM_IO_ERR;
 
-	/* logic error: lba out-of-bounds. Ignore read request */
-	if (blba >= pblk->rl.nr_secs || nr_secs > PBLK_MAX_REQ_ADDRS) {
-		WARN(1, "pblk: read lba out of bounds (lba:%llu, nr:%d)\n",
-					(unsigned long long)blba, nr_secs);
-		return NVM_IO_ERR;
-	}
-
 	generic_start_io_acct(q, REQ_OP_READ, bio_sectors(bio),
 			      &pblk->disk->part0);
 
@@ -484,21 +454,13 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio)
 	 */
 	bio_init_idx = pblk_get_bi_idx(bio);
 
-	rqd->meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
-							&rqd->dma_meta_list);
-	if (!rqd->meta_list) {
-		pblk_err(pblk, "not able to allocate ppa list\n");
+	if (pblk_alloc_rqd_meta(pblk, rqd))
 		goto fail_rqd_free;
-	}
-
-	if (nr_secs > 1) {
-		rqd->ppa_list = rqd->meta_list + pblk_dma_meta_size;
-		rqd->dma_ppa_list = rqd->dma_meta_list + pblk_dma_meta_size;
 
+	if (nr_secs > 1)
 		pblk_read_ppalist_rq(pblk, rqd, bio, blba, read_bitmap);
-	} else {
+	else
 		pblk_read_rq(pblk, rqd, bio, blba, read_bitmap);
-	}
 
 	if (bitmap_full(read_bitmap, nr_secs)) {
 		atomic_inc(&pblk->inflight_io);
@@ -552,7 +514,7 @@ static int read_ppalist_rq_gc(struct pblk *pblk, struct nvm_rq *rqd,
 			      struct pblk_line *line, u64 *lba_list,
 			      u64 *paddr_list_gc, unsigned int nr_secs)
 {
-	struct ppa_addr ppa_list_l2p[PBLK_MAX_REQ_ADDRS];
+	struct ppa_addr ppa_list_l2p[NVM_MAX_VLBA];
 	struct ppa_addr ppa_gc;
 	int valid_secs = 0;
 	int i;
@@ -625,15 +587,11 @@ int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
 
 	memset(&rqd, 0, sizeof(struct nvm_rq));
 
-	rqd.meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
-							&rqd.dma_meta_list);
-	if (!rqd.meta_list)
-		return -ENOMEM;
+	ret = pblk_alloc_rqd_meta(pblk, &rqd);
+	if (ret)
+		return ret;
 
 	if (gc_rq->nr_secs > 1) {
-		rqd.ppa_list = rqd.meta_list + pblk_dma_meta_size;
-		rqd.dma_ppa_list = rqd.dma_meta_list + pblk_dma_meta_size;
-
 		gc_rq->secs_to_gc = read_ppalist_rq_gc(pblk, &rqd, gc_rq->line,
 							gc_rq->lba_list,
 							gc_rq->paddr_list,
@@ -654,7 +612,8 @@ int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
 						PBLK_VMALLOC_META, GFP_KERNEL);
 	if (IS_ERR(bio)) {
 		pblk_err(pblk, "could not allocate GC bio (%lu)\n",
-				PTR_ERR(bio));
+								PTR_ERR(bio));
+		ret = PTR_ERR(bio);
 		goto err_free_dma;
 	}
 
@@ -663,7 +622,6 @@ int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
 
 	rqd.opcode = NVM_OP_PREAD;
 	rqd.nr_ppas = gc_rq->secs_to_gc;
-	rqd.flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM);
 	rqd.bio = bio;
 
 	if (pblk_submit_io_sync(pblk, &rqd)) {
@@ -690,12 +648,12 @@ int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
 #endif
 
 out:
-	nvm_dev_dma_free(dev->parent, rqd.meta_list, rqd.dma_meta_list);
+	pblk_free_rqd_meta(pblk, &rqd);
 	return ret;
 
 err_free_bio:
 	bio_put(bio);
 err_free_dma:
-	nvm_dev_dma_free(dev->parent, rqd.meta_list, rqd.dma_meta_list);
+	pblk_free_rqd_meta(pblk, &rqd);
 	return ret;
 }
diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index e232e47e1353..5740b7509bd8 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2016 CNEX Labs
  * Initial: Javier Gonzalez <javier@cnexlabs.com>
@@ -15,6 +16,7 @@
  */
 
 #include "pblk.h"
+#include "pblk-trace.h"
 
 int pblk_recov_check_emeta(struct pblk *pblk, struct line_emeta *emeta_buf)
 {
@@ -85,15 +87,39 @@ static int pblk_recov_l2p_from_emeta(struct pblk *pblk, struct pblk_line *line)
 	return 0;
 }
 
-static int pblk_calc_sec_in_line(struct pblk *pblk, struct pblk_line *line)
+static void pblk_update_line_wp(struct pblk *pblk, struct pblk_line *line,
+				u64 written_secs)
+{
+	int i;
+
+	for (i = 0; i < written_secs; i += pblk->min_write_pgs)
+		pblk_alloc_page(pblk, line, pblk->min_write_pgs);
+}
+
+static u64 pblk_sec_in_open_line(struct pblk *pblk, struct pblk_line *line)
 {
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
 	struct pblk_line_meta *lm = &pblk->lm;
 	int nr_bb = bitmap_weight(line->blk_bitmap, lm->blk_per_line);
+	u64 written_secs = 0;
+	int valid_chunks = 0;
+	int i;
+
+	for (i = 0; i < lm->blk_per_line; i++) {
+		struct nvm_chk_meta *chunk = &line->chks[i];
+
+		if (chunk->state & NVM_CHK_ST_OFFLINE)
+			continue;
+
+		written_secs += chunk->wp;
+		valid_chunks++;
+	}
+
+	if (lm->blk_per_line - nr_bb != valid_chunks)
+		pblk_err(pblk, "recovery line %d is bad\n", line->id);
 
-	return lm->sec_per_line - lm->smeta_sec - lm->emeta_sec[0] -
-				nr_bb * geo->clba;
+	pblk_update_line_wp(pblk, line, written_secs - lm->smeta_sec);
+
+	return written_secs;
 }
 
 struct pblk_recov_alloc {
@@ -105,115 +131,6 @@ struct pblk_recov_alloc {
 	dma_addr_t dma_meta_list;
 };
 
-static int pblk_recov_read_oob(struct pblk *pblk, struct pblk_line *line,
-			       struct pblk_recov_alloc p, u64 r_ptr)
-{
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-	struct ppa_addr *ppa_list;
-	struct pblk_sec_meta *meta_list;
-	struct nvm_rq *rqd;
-	struct bio *bio;
-	void *data;
-	dma_addr_t dma_ppa_list, dma_meta_list;
-	u64 r_ptr_int;
-	int left_ppas;
-	int rq_ppas, rq_len;
-	int i, j;
-	int ret = 0;
-
-	ppa_list = p.ppa_list;
-	meta_list = p.meta_list;
-	rqd = p.rqd;
-	data = p.data;
-	dma_ppa_list = p.dma_ppa_list;
-	dma_meta_list = p.dma_meta_list;
-
-	left_ppas = line->cur_sec - r_ptr;
-	if (!left_ppas)
-		return 0;
-
-	r_ptr_int = r_ptr;
-
-next_read_rq:
-	memset(rqd, 0, pblk_g_rq_size);
-
-	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
-	if (!rq_ppas)
-		rq_ppas = pblk->min_write_pgs;
-	rq_len = rq_ppas * geo->csecs;
-
-	bio = bio_map_kern(dev->q, data, rq_len, GFP_KERNEL);
-	if (IS_ERR(bio))
-		return PTR_ERR(bio);
-
-	bio->bi_iter.bi_sector = 0; /* internal bio */
-	bio_set_op_attrs(bio, REQ_OP_READ, 0);
-
-	rqd->bio = bio;
-	rqd->opcode = NVM_OP_PREAD;
-	rqd->meta_list = meta_list;
-	rqd->nr_ppas = rq_ppas;
-	rqd->ppa_list = ppa_list;
-	rqd->dma_ppa_list = dma_ppa_list;
-	rqd->dma_meta_list = dma_meta_list;
-
-	if (pblk_io_aligned(pblk, rq_ppas))
-		rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_SEQUENTIAL);
-	else
-		rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM);
-
-	for (i = 0; i < rqd->nr_ppas; ) {
-		struct ppa_addr ppa;
-		int pos;
-
-		ppa = addr_to_gen_ppa(pblk, r_ptr_int, line->id);
-		pos = pblk_ppa_to_pos(geo, ppa);
-
-		while (test_bit(pos, line->blk_bitmap)) {
-			r_ptr_int += pblk->min_write_pgs;
-			ppa = addr_to_gen_ppa(pblk, r_ptr_int, line->id);
-			pos = pblk_ppa_to_pos(geo, ppa);
-		}
-
-		for (j = 0; j < pblk->min_write_pgs; j++, i++, r_ptr_int++)
-			rqd->ppa_list[i] =
-				addr_to_gen_ppa(pblk, r_ptr_int, line->id);
-	}
-
-	/* If read fails, more padding is needed */
-	ret = pblk_submit_io_sync(pblk, rqd);
-	if (ret) {
-		pblk_err(pblk, "I/O submission failed: %d\n", ret);
-		return ret;
-	}
-
-	atomic_dec(&pblk->inflight_io);
-
-	/* At this point, the read should not fail. If it does, it is a problem
-	 * we cannot recover from here. Need FTL log.
-	 */
-	if (rqd->error && rqd->error != NVM_RSP_WARN_HIGHECC) {
-		pblk_err(pblk, "L2P recovery failed (%d)\n", rqd->error);
-		return -EINTR;
-	}
-
-	for (i = 0; i < rqd->nr_ppas; i++) {
-		u64 lba = le64_to_cpu(meta_list[i].lba);
-
-		if (lba == ADDR_EMPTY || lba > pblk->rl.nr_secs)
-			continue;
-
-		pblk_update_map(pblk, lba, rqd->ppa_list[i]);
-	}
-
-	left_ppas -= rq_ppas;
-	if (left_ppas > 0)
-		goto next_read_rq;
-
-	return 0;
-}
-
 static void pblk_recov_complete(struct kref *ref)
 {
 	struct pblk_pad_rq *pad_rq = container_of(ref, struct pblk_pad_rq, ref);
@@ -223,10 +140,11 @@ static void pblk_recov_complete(struct kref *ref)
 
 static void pblk_end_io_recov(struct nvm_rq *rqd)
 {
+	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
 	struct pblk_pad_rq *pad_rq = rqd->private;
 	struct pblk *pblk = pad_rq->pblk;
 
-	pblk_up_page(pblk, rqd->ppa_list, rqd->nr_ppas);
+	pblk_up_chunk(pblk, ppa_list[0]);
 
 	pblk_free_rqd(pblk, rqd, PBLK_WRITE_INT);
 
@@ -234,18 +152,17 @@ static void pblk_end_io_recov(struct nvm_rq *rqd)
 	kref_put(&pad_rq->ref, pblk_recov_complete);
 }
 
-static int pblk_recov_pad_oob(struct pblk *pblk, struct pblk_line *line,
-			      int left_ppas)
+/* pad line using line bitmap.  */
+static int pblk_recov_pad_line(struct pblk *pblk, struct pblk_line *line,
+			       int left_ppas)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
-	struct ppa_addr *ppa_list;
 	struct pblk_sec_meta *meta_list;
 	struct pblk_pad_rq *pad_rq;
 	struct nvm_rq *rqd;
 	struct bio *bio;
 	void *data;
-	dma_addr_t dma_ppa_list, dma_meta_list;
 	__le64 *lba_list = emeta_to_lbas(pblk, line->emeta->buf);
 	u64 w_ptr = line->cur_sec;
 	int left_line_ppas, rq_ppas, rq_len;
@@ -279,20 +196,11 @@ next_pad_rq:
 
 	rq_len = rq_ppas * geo->csecs;
 
-	meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL, &dma_meta_list);
-	if (!meta_list) {
-		ret = -ENOMEM;
-		goto fail_free_pad;
-	}
-
-	ppa_list = (void *)(meta_list) + pblk_dma_meta_size;
-	dma_ppa_list = dma_meta_list + pblk_dma_meta_size;
-
 	bio = pblk_bio_map_addr(pblk, data, rq_ppas, rq_len,
 						PBLK_VMALLOC_META, GFP_KERNEL);
 	if (IS_ERR(bio)) {
 		ret = PTR_ERR(bio);
-		goto fail_free_meta;
+		goto fail_free_pad;
 	}
 
 	bio->bi_iter.bi_sector = 0; /* internal bio */
@@ -300,17 +208,19 @@ next_pad_rq:
 
 	rqd = pblk_alloc_rqd(pblk, PBLK_WRITE_INT);
 
+	ret = pblk_alloc_rqd_meta(pblk, rqd);
+	if (ret)
+		goto fail_free_rqd;
+
 	rqd->bio = bio;
 	rqd->opcode = NVM_OP_PWRITE;
-	rqd->flags = pblk_set_progr_mode(pblk, PBLK_WRITE);
-	rqd->meta_list = meta_list;
+	rqd->is_seq = 1;
 	rqd->nr_ppas = rq_ppas;
-	rqd->ppa_list = ppa_list;
-	rqd->dma_ppa_list = dma_ppa_list;
-	rqd->dma_meta_list = dma_meta_list;
 	rqd->end_io = pblk_end_io_recov;
 	rqd->private = pad_rq;
 
+	meta_list = rqd->meta_list;
+
 	for (i = 0; i < rqd->nr_ppas; ) {
 		struct ppa_addr ppa;
 		int pos;
@@ -338,13 +248,13 @@ next_pad_rq:
 	}
 
 	kref_get(&pad_rq->ref);
-	pblk_down_page(pblk, rqd->ppa_list, rqd->nr_ppas);
+	pblk_down_chunk(pblk, rqd->ppa_list[0]);
 
 	ret = pblk_submit_io(pblk, rqd);
 	if (ret) {
 		pblk_err(pblk, "I/O submission failed: %d\n", ret);
-		pblk_up_page(pblk, rqd->ppa_list, rqd->nr_ppas);
-		goto fail_free_bio;
+		pblk_up_chunk(pblk, rqd->ppa_list[0]);
+		goto fail_free_rqd;
 	}
 
 	left_line_ppas -= rq_ppas;
@@ -368,157 +278,60 @@ free_rq:
 	kfree(pad_rq);
 	return ret;
 
-fail_free_bio:
+fail_free_rqd:
+	pblk_free_rqd(pblk, rqd, PBLK_WRITE_INT);
 	bio_put(bio);
-fail_free_meta:
-	nvm_dev_dma_free(dev->parent, meta_list, dma_meta_list);
 fail_free_pad:
 	kfree(pad_rq);
 	vfree(data);
 	return ret;
 }
 
-/* When this function is called, it means that not all upper pages have been
- * written in a page that contains valid data. In order to recover this data, we
- * first find the write pointer on the device, then we pad all necessary
- * sectors, and finally attempt to read the valid data
- */
-static int pblk_recov_scan_all_oob(struct pblk *pblk, struct pblk_line *line,
-				   struct pblk_recov_alloc p)
+static int pblk_pad_distance(struct pblk *pblk, struct pblk_line *line)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
-	struct ppa_addr *ppa_list;
-	struct pblk_sec_meta *meta_list;
-	struct nvm_rq *rqd;
-	struct bio *bio;
-	void *data;
-	dma_addr_t dma_ppa_list, dma_meta_list;
-	u64 w_ptr = 0, r_ptr;
-	int rq_ppas, rq_len;
-	int i, j;
-	int ret = 0;
-	int rec_round;
-	int left_ppas = pblk_calc_sec_in_line(pblk, line) - line->cur_sec;
-
-	ppa_list = p.ppa_list;
-	meta_list = p.meta_list;
-	rqd = p.rqd;
-	data = p.data;
-	dma_ppa_list = p.dma_ppa_list;
-	dma_meta_list = p.dma_meta_list;
-
-	/* we could recover up until the line write pointer */
-	r_ptr = line->cur_sec;
-	rec_round = 0;
-
-next_rq:
-	memset(rqd, 0, pblk_g_rq_size);
+	int distance = geo->mw_cunits * geo->all_luns * geo->ws_opt;
 
-	rq_ppas = pblk_calc_secs(pblk, left_ppas, 0);
-	if (!rq_ppas)
-		rq_ppas = pblk->min_write_pgs;
-	rq_len = rq_ppas * geo->csecs;
-
-	bio = bio_map_kern(dev->q, data, rq_len, GFP_KERNEL);
-	if (IS_ERR(bio))
-		return PTR_ERR(bio);
-
-	bio->bi_iter.bi_sector = 0; /* internal bio */
-	bio_set_op_attrs(bio, REQ_OP_READ, 0);
+	return (distance > line->left_msecs) ? line->left_msecs : distance;
+}
 
-	rqd->bio = bio;
-	rqd->opcode = NVM_OP_PREAD;
-	rqd->meta_list = meta_list;
-	rqd->nr_ppas = rq_ppas;
-	rqd->ppa_list = ppa_list;
-	rqd->dma_ppa_list = dma_ppa_list;
-	rqd->dma_meta_list = dma_meta_list;
+static int pblk_line_wp_is_unbalanced(struct pblk *pblk,
+				      struct pblk_line *line)
+{
+	struct nvm_tgt_dev *dev = pblk->dev;
+	struct nvm_geo *geo = &dev->geo;
+	struct pblk_line_meta *lm = &pblk->lm;
+	struct pblk_lun *rlun;
+	struct nvm_chk_meta *chunk;
+	struct ppa_addr ppa;
+	u64 line_wp;
+	int pos, i;
 
-	if (pblk_io_aligned(pblk, rq_ppas))
-		rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_SEQUENTIAL);
-	else
-		rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM);
+	rlun = &pblk->luns[0];
+	ppa = rlun->bppa;
+	pos = pblk_ppa_to_pos(geo, ppa);
+	chunk = &line->chks[pos];
 
-	for (i = 0; i < rqd->nr_ppas; ) {
-		struct ppa_addr ppa;
-		int pos;
+	line_wp = chunk->wp;
 
-		w_ptr = pblk_alloc_page(pblk, line, pblk->min_write_pgs);
-		ppa = addr_to_gen_ppa(pblk, w_ptr, line->id);
+	for (i = 1; i < lm->blk_per_line; i++) {
+		rlun = &pblk->luns[i];
+		ppa = rlun->bppa;
 		pos = pblk_ppa_to_pos(geo, ppa);
+		chunk = &line->chks[pos];
 
-		while (test_bit(pos, line->blk_bitmap)) {
-			w_ptr += pblk->min_write_pgs;
-			ppa = addr_to_gen_ppa(pblk, w_ptr, line->id);
-			pos = pblk_ppa_to_pos(geo, ppa);
-		}
-
-		for (j = 0; j < pblk->min_write_pgs; j++, i++, w_ptr++)
-			rqd->ppa_list[i] =
-				addr_to_gen_ppa(pblk, w_ptr, line->id);
-	}
-
-	ret = pblk_submit_io_sync(pblk, rqd);
-	if (ret) {
-		pblk_err(pblk, "I/O submission failed: %d\n", ret);
-		return ret;
-	}
-
-	atomic_dec(&pblk->inflight_io);
-
-	/* This should not happen since the read failed during normal recovery,
-	 * but the media works funny sometimes...
-	 */
-	if (!rec_round++ && !rqd->error) {
-		rec_round = 0;
-		for (i = 0; i < rqd->nr_ppas; i++, r_ptr++) {
-			u64 lba = le64_to_cpu(meta_list[i].lba);
-
-			if (lba == ADDR_EMPTY || lba > pblk->rl.nr_secs)
-				continue;
-
-			pblk_update_map(pblk, lba, rqd->ppa_list[i]);
-		}
-	}
-
-	/* Reached the end of the written line */
-	if (rqd->error == NVM_RSP_ERR_EMPTYPAGE) {
-		int pad_secs, nr_error_bits, bit;
-		int ret;
-
-		bit = find_first_bit((void *)&rqd->ppa_status, rqd->nr_ppas);
-		nr_error_bits = rqd->nr_ppas - bit;
-
-		/* Roll back failed sectors */
-		line->cur_sec -= nr_error_bits;
-		line->left_msecs += nr_error_bits;
-		bitmap_clear(line->map_bitmap, line->cur_sec, nr_error_bits);
-
-		pad_secs = pblk_pad_distance(pblk);
-		if (pad_secs > line->left_msecs)
-			pad_secs = line->left_msecs;
-
-		ret = pblk_recov_pad_oob(pblk, line, pad_secs);
-		if (ret)
-			pblk_err(pblk, "OOB padding failed (err:%d)\n", ret);
-
-		ret = pblk_recov_read_oob(pblk, line, p, r_ptr);
-		if (ret)
-			pblk_err(pblk, "OOB read failed (err:%d)\n", ret);
-
-		left_ppas = 0;
+		if (chunk->wp > line_wp)
+			return 1;
+		else if (chunk->wp < line_wp)
+			line_wp = chunk->wp;
 	}
 
-	left_ppas -= rq_ppas;
-	if (left_ppas > 0)
-		goto next_rq;
-
-	return ret;
+	return 0;
 }
 
 static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
-			       struct pblk_recov_alloc p, int *done)
+			       struct pblk_recov_alloc p)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
 	struct nvm_geo *geo = &dev->geo;
@@ -528,11 +341,16 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
 	struct bio *bio;
 	void *data;
 	dma_addr_t dma_ppa_list, dma_meta_list;
-	u64 paddr;
+	__le64 *lba_list;
+	u64 paddr = 0;
+	bool padded = false;
 	int rq_ppas, rq_len;
 	int i, j;
-	int ret = 0;
-	int left_ppas = pblk_calc_sec_in_line(pblk, line);
+	int ret;
+	u64 left_ppas = pblk_sec_in_open_line(pblk, line);
+
+	if (pblk_line_wp_is_unbalanced(pblk, line))
+		pblk_warn(pblk, "recovering unbalanced line (%d)\n", line->id);
 
 	ppa_list = p.ppa_list;
 	meta_list = p.meta_list;
@@ -541,7 +359,7 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
 	dma_ppa_list = p.dma_ppa_list;
 	dma_meta_list = p.dma_meta_list;
 
-	*done = 1;
+	lba_list = emeta_to_lbas(pblk, line->emeta->buf);
 
 next_rq:
 	memset(rqd, 0, pblk_g_rq_size);
@@ -567,15 +385,13 @@ next_rq:
 	rqd->dma_meta_list = dma_meta_list;
 
 	if (pblk_io_aligned(pblk, rq_ppas))
-		rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_SEQUENTIAL);
-	else
-		rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM);
+		rqd->is_seq = 1;
 
+retry_rq:
 	for (i = 0; i < rqd->nr_ppas; ) {
 		struct ppa_addr ppa;
 		int pos;
 
-		paddr = pblk_alloc_page(pblk, line, pblk->min_write_pgs);
 		ppa = addr_to_gen_ppa(pblk, paddr, line->id);
 		pos = pblk_ppa_to_pos(geo, ppa);
 
@@ -585,9 +401,9 @@ next_rq:
 			pos = pblk_ppa_to_pos(geo, ppa);
 		}
 
-		for (j = 0; j < pblk->min_write_pgs; j++, i++, paddr++)
+		for (j = 0; j < pblk->min_write_pgs; j++, i++)
 			rqd->ppa_list[i] =
-				addr_to_gen_ppa(pblk, paddr, line->id);
+				addr_to_gen_ppa(pblk, paddr + j, line->id);
 	}
 
 	ret = pblk_submit_io_sync(pblk, rqd);
@@ -599,31 +415,33 @@ next_rq:
 
 	atomic_dec(&pblk->inflight_io);
 
-	/* Reached the end of the written line */
+	/* If a read fails, do a best effort by padding the line and retrying */
 	if (rqd->error) {
-		int nr_error_bits, bit;
+		int pad_distance, ret;
 
-		bit = find_first_bit((void *)&rqd->ppa_status, rqd->nr_ppas);
-		nr_error_bits = rqd->nr_ppas - bit;
-
-		/* Roll back failed sectors */
-		line->cur_sec -= nr_error_bits;
-		line->left_msecs += nr_error_bits;
-		bitmap_clear(line->map_bitmap, line->cur_sec, nr_error_bits);
+		if (padded) {
+			pblk_log_read_err(pblk, rqd);
+			return -EINTR;
+		}
 
-		left_ppas = 0;
-		rqd->nr_ppas = bit;
+		pad_distance = pblk_pad_distance(pblk, line);
+		ret = pblk_recov_pad_line(pblk, line, pad_distance);
+		if (ret)
+			return ret;
 
-		if (rqd->error != NVM_RSP_ERR_EMPTYPAGE)
-			*done = 0;
+		padded = true;
+		goto retry_rq;
 	}
 
 	for (i = 0; i < rqd->nr_ppas; i++) {
 		u64 lba = le64_to_cpu(meta_list[i].lba);
 
+		lba_list[paddr++] = cpu_to_le64(lba);
+
 		if (lba == ADDR_EMPTY || lba > pblk->rl.nr_secs)
 			continue;
 
+		line->nr_valid_lbas++;
 		pblk_update_map(pblk, lba, rqd->ppa_list[i]);
 	}
 
@@ -631,7 +449,11 @@ next_rq:
 	if (left_ppas > 0)
 		goto next_rq;
 
-	return ret;
+#ifdef CONFIG_NVM_PBLK_DEBUG
+	WARN_ON(padded && !pblk_line_is_full(line));
+#endif
+
+	return 0;
 }
 
 /* Scan line for lbas on out of bound area */
@@ -645,7 +467,7 @@ static int pblk_recov_l2p_from_oob(struct pblk *pblk, struct pblk_line *line)
 	struct pblk_recov_alloc p;
 	void *data;
 	dma_addr_t dma_ppa_list, dma_meta_list;
-	int done, ret = 0;
+	int ret = 0;
 
 	meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL, &dma_meta_list);
 	if (!meta_list)
@@ -660,7 +482,8 @@ static int pblk_recov_l2p_from_oob(struct pblk *pblk, struct pblk_line *line)
 		goto free_meta_list;
 	}
 
-	rqd = pblk_alloc_rqd(pblk, PBLK_READ);
+	rqd = mempool_alloc(&pblk->r_rq_pool, GFP_KERNEL);
+	memset(rqd, 0, pblk_g_rq_size);
 
 	p.ppa_list = ppa_list;
 	p.meta_list = meta_list;
@@ -669,24 +492,17 @@ static int pblk_recov_l2p_from_oob(struct pblk *pblk, struct pblk_line *line)
 	p.dma_ppa_list = dma_ppa_list;
 	p.dma_meta_list = dma_meta_list;
 
-	ret = pblk_recov_scan_oob(pblk, line, p, &done);
+	ret = pblk_recov_scan_oob(pblk, line, p);
 	if (ret) {
-		pblk_err(pblk, "could not recover L2P from OOB\n");
+		pblk_err(pblk, "could not recover L2P form OOB\n");
 		goto out;
 	}
 
-	if (!done) {
-		ret = pblk_recov_scan_all_oob(pblk, line, p);
-		if (ret) {
-			pblk_err(pblk, "could not recover L2P from OOB\n");
-			goto out;
-		}
-	}
-
 	if (pblk_line_is_full(line))
 		pblk_line_recov_close(pblk, line);
 
 out:
+	mempool_free(rqd, &pblk->r_rq_pool);
 	kfree(data);
 free_meta_list:
 	nvm_dev_dma_free(dev->parent, meta_list, dma_meta_list);
@@ -775,7 +591,7 @@ static void pblk_recov_wa_counters(struct pblk *pblk,
 }
 
 static int pblk_line_was_written(struct pblk_line *line,
-			    struct pblk *pblk)
+				 struct pblk *pblk)
 {
 
 	struct pblk_line_meta *lm = &pblk->lm;
@@ -801,6 +617,18 @@ static int pblk_line_was_written(struct pblk_line *line,
 	return 1;
 }
 
+static bool pblk_line_is_open(struct pblk *pblk, struct pblk_line *line)
+{
+	struct pblk_line_meta *lm = &pblk->lm;
+	int i;
+
+	for (i = 0; i < lm->blk_per_line; i++)
+		if (line->chks[i].state & NVM_CHK_ST_OPEN)
+			return true;
+
+	return false;
+}
+
 struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
 {
 	struct pblk_line_meta *lm = &pblk->lm;
@@ -841,7 +669,7 @@ struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
 			continue;
 
 		/* Lines that cannot be read are assumed as not written here */
-		if (pblk_line_read_smeta(pblk, line))
+		if (pblk_line_smeta_read(pblk, line))
 			continue;
 
 		crc = pblk_calc_smeta_crc(pblk, smeta_buf);
@@ -911,7 +739,12 @@ struct pblk_line *pblk_recov_l2p(struct pblk *pblk)
 		line->emeta = emeta;
 		memset(line->emeta->buf, 0, lm->emeta_len[0]);
 
-		if (pblk_line_read_emeta(pblk, line, line->emeta->buf)) {
+		if (pblk_line_is_open(pblk, line)) {
+			pblk_recov_l2p_from_oob(pblk, line);
+			goto next;
+		}
+
+		if (pblk_line_emeta_read(pblk, line, line->emeta->buf)) {
 			pblk_recov_l2p_from_oob(pblk, line);
 			goto next;
 		}
@@ -935,6 +768,8 @@ next:
 
 			spin_lock(&line->lock);
 			line->state = PBLK_LINESTATE_CLOSED;
+			trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 			move_list = pblk_line_gc_list(pblk, line);
 			spin_unlock(&line->lock);
 
@@ -942,26 +777,36 @@ next:
 			list_move_tail(&line->list, move_list);
 			spin_unlock(&l_mg->gc_lock);
 
-			kfree(line->map_bitmap);
+			mempool_free(line->map_bitmap, l_mg->bitmap_pool);
 			line->map_bitmap = NULL;
 			line->smeta = NULL;
 			line->emeta = NULL;
 		} else {
-			if (open_lines > 1)
-				pblk_err(pblk, "failed to recover L2P\n");
+			spin_lock(&line->lock);
+			line->state = PBLK_LINESTATE_OPEN;
+			spin_unlock(&line->lock);
+
+			line->emeta->mem = 0;
+			atomic_set(&line->emeta->sync, 0);
+
+			trace_pblk_line_state(pblk_disk_name(pblk), line->id,
+					line->state);
 
-			open_lines++;
-			line->meta_line = meta_line;
 			data_line = line;
+			line->meta_line = meta_line;
+
+			open_lines++;
 		}
 	}
 
-	spin_lock(&l_mg->free_lock);
 	if (!open_lines) {
+		spin_lock(&l_mg->free_lock);
 		WARN_ON_ONCE(!test_and_clear_bit(meta_line,
 							&l_mg->meta_bitmap));
+		spin_unlock(&l_mg->free_lock);
 		pblk_line_replace_data(pblk);
 	} else {
+		spin_lock(&l_mg->free_lock);
 		/* Allocate next line for preparation */
 		l_mg->data_next = pblk_line_get(pblk);
 		if (l_mg->data_next) {
@@ -969,8 +814,8 @@ next:
 			l_mg->data_next->type = PBLK_LINETYPE_DATA;
 			is_next = 1;
 		}
+		spin_unlock(&l_mg->free_lock);
 	}
-	spin_unlock(&l_mg->free_lock);
 
 	if (is_next)
 		pblk_line_erase(pblk, l_mg->data_next);
@@ -998,7 +843,7 @@ int pblk_recov_pad(struct pblk *pblk)
 	left_msecs = line->left_msecs;
 	spin_unlock(&l_mg->free_lock);
 
-	ret = pblk_recov_pad_oob(pblk, line, left_msecs);
+	ret = pblk_recov_pad_line(pblk, line, left_msecs);
 	if (ret) {
 		pblk_err(pblk, "tear down padding failed (%d)\n", ret);
 		return ret;
diff --git a/drivers/lightnvm/pblk-rl.c b/drivers/lightnvm/pblk-rl.c
index 6a0616a6fcaf..db55a1c89997 100644
--- a/drivers/lightnvm/pblk-rl.c
+++ b/drivers/lightnvm/pblk-rl.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2016 CNEX Labs
  * Initial release: Javier Gonzalez <javier@cnexlabs.com>
@@ -127,7 +128,7 @@ static void __pblk_rl_update_rates(struct pblk_rl *rl,
 	} else if (free_blocks < rl->high) {
 		int shift = rl->high_pw - rl->rb_windows_pw;
 		int user_windows = free_blocks >> shift;
-		int user_max = user_windows << PBLK_MAX_REQ_ADDRS_PW;
+		int user_max = user_windows << ilog2(NVM_MAX_VLBA);
 
 		rl->rb_user_max = user_max;
 		rl->rb_gc_max = max - user_max;
@@ -228,7 +229,7 @@ void pblk_rl_init(struct pblk_rl *rl, int budget)
 	rl->rsv_blocks = min_blocks;
 
 	/* This will always be a power-of-2 */
-	rb_windows = budget / PBLK_MAX_REQ_ADDRS;
+	rb_windows = budget / NVM_MAX_VLBA;
 	rl->rb_windows_pw = get_count_order(rb_windows);
 
 	/* To start with, all buffer is available to user I/O writers */
diff --git a/drivers/lightnvm/pblk-sysfs.c b/drivers/lightnvm/pblk-sysfs.c
index 9fc3dfa168b4..2d2818155aa8 100644
--- a/drivers/lightnvm/pblk-sysfs.c
+++ b/drivers/lightnvm/pblk-sysfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2016 CNEX Labs
  * Initial release: Javier Gonzalez <javier@cnexlabs.com>
@@ -262,8 +263,14 @@ static ssize_t pblk_sysfs_lines(struct pblk *pblk, char *page)
 		sec_in_line = l_mg->data_line->sec_in_line;
 		meta_weight = bitmap_weight(&l_mg->meta_bitmap,
 							PBLK_DATA_LINES);
-		map_weight = bitmap_weight(l_mg->data_line->map_bitmap,
+
+		spin_lock(&l_mg->data_line->lock);
+		if (l_mg->data_line->map_bitmap)
+			map_weight = bitmap_weight(l_mg->data_line->map_bitmap,
 							lm->sec_per_line);
+		else
+			map_weight = 0;
+		spin_unlock(&l_mg->data_line->lock);
 	}
 	spin_unlock(&l_mg->free_lock);
 
@@ -337,7 +344,6 @@ static ssize_t pblk_get_write_amp(u64 user, u64 gc, u64 pad,
 {
 	int sz;
 
-
 	sz = snprintf(page, PAGE_SIZE,
 			"user:%lld gc:%lld pad:%lld WA:",
 			user, gc, pad);
@@ -349,7 +355,7 @@ static ssize_t pblk_get_write_amp(u64 user, u64 gc, u64 pad,
 		u32 wa_frac;
 
 		wa_int = (user + gc + pad) * 100000;
-		wa_int = div_u64(wa_int, user);
+		wa_int = div64_u64(wa_int, user);
 		wa_int = div_u64_rem(wa_int, 100000, &wa_frac);
 
 		sz += snprintf(page + sz, PAGE_SIZE - sz, "%llu.%05u\n",
diff --git a/drivers/lightnvm/pblk-trace.h b/drivers/lightnvm/pblk-trace.h
new file mode 100644
index 000000000000..679e5c458ca6
--- /dev/null
+++ b/drivers/lightnvm/pblk-trace.h
@@ -0,0 +1,145 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM pblk
+
+#if !defined(_TRACE_PBLK_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_PBLK_H
+
+#include <linux/tracepoint.h>
+
+struct ppa_addr;
+
+#define show_chunk_flags(state) __print_flags(state, "",	\
+	{ NVM_CHK_ST_FREE,		"FREE",		},	\
+	{ NVM_CHK_ST_CLOSED,		"CLOSED",	},	\
+	{ NVM_CHK_ST_OPEN,		"OPEN",		},	\
+	{ NVM_CHK_ST_OFFLINE,		"OFFLINE",	})
+
+#define show_line_state(state) __print_symbolic(state,		\
+	{ PBLK_LINESTATE_NEW,		"NEW",		},	\
+	{ PBLK_LINESTATE_FREE,		"FREE",		},	\
+	{ PBLK_LINESTATE_OPEN,		"OPEN",		},	\
+	{ PBLK_LINESTATE_CLOSED,	"CLOSED",	},	\
+	{ PBLK_LINESTATE_GC,		"GC",		},	\
+	{ PBLK_LINESTATE_BAD,		"BAD",		},	\
+	{ PBLK_LINESTATE_CORRUPT,	"CORRUPT"	})
+
+
+#define show_pblk_state(state) __print_symbolic(state,		\
+	{ PBLK_STATE_RUNNING,		"RUNNING",	},	\
+	{ PBLK_STATE_STOPPING,		"STOPPING",	},	\
+	{ PBLK_STATE_RECOVERING,	"RECOVERING",	},	\
+	{ PBLK_STATE_STOPPED,		"STOPPED"	})
+
+#define show_chunk_erase_state(state) __print_symbolic(state,	\
+	{ PBLK_CHUNK_RESET_START,	"START",	},	\
+	{ PBLK_CHUNK_RESET_DONE,	"OK",		},	\
+	{ PBLK_CHUNK_RESET_FAILED,	"FAILED"	})
+
+
+TRACE_EVENT(pblk_chunk_reset,
+
+	TP_PROTO(const char *name, struct ppa_addr *ppa, int state),
+
+	TP_ARGS(name, ppa, state),
+
+	TP_STRUCT__entry(
+		__string(name, name)
+		__field(u64, ppa)
+		__field(int, state);
+	),
+
+	TP_fast_assign(
+		__assign_str(name, name);
+		__entry->ppa = ppa->ppa;
+		__entry->state = state;
+	),
+
+	TP_printk("dev=%s grp=%llu pu=%llu chk=%llu state=%s", __get_str(name),
+			(u64)(((struct ppa_addr *)(&__entry->ppa))->m.grp),
+			(u64)(((struct ppa_addr *)(&__entry->ppa))->m.pu),
+			(u64)(((struct ppa_addr *)(&__entry->ppa))->m.chk),
+			show_chunk_erase_state((int)__entry->state))
+
+);
+
+TRACE_EVENT(pblk_chunk_state,
+
+	TP_PROTO(const char *name, struct ppa_addr *ppa, int state),
+
+	TP_ARGS(name, ppa, state),
+
+	TP_STRUCT__entry(
+		__string(name, name)
+		__field(u64, ppa)
+		__field(int, state);
+	),
+
+	TP_fast_assign(
+		__assign_str(name, name);
+		__entry->ppa = ppa->ppa;
+		__entry->state = state;
+	),
+
+	TP_printk("dev=%s grp=%llu pu=%llu chk=%llu state=%s", __get_str(name),
+			(u64)(((struct ppa_addr *)(&__entry->ppa))->m.grp),
+			(u64)(((struct ppa_addr *)(&__entry->ppa))->m.pu),
+			(u64)(((struct ppa_addr *)(&__entry->ppa))->m.chk),
+			show_chunk_flags((int)__entry->state))
+
+);
+
+TRACE_EVENT(pblk_line_state,
+
+	TP_PROTO(const char *name, int line, int state),
+
+	TP_ARGS(name, line, state),
+
+	TP_STRUCT__entry(
+		__string(name, name)
+		__field(int, line)
+		__field(int, state);
+	),
+
+	TP_fast_assign(
+		__assign_str(name, name);
+		__entry->line = line;
+		__entry->state = state;
+	),
+
+	TP_printk("dev=%s line=%d state=%s", __get_str(name),
+			(int)__entry->line,
+			show_line_state((int)__entry->state))
+
+);
+
+TRACE_EVENT(pblk_state,
+
+	TP_PROTO(const char *name, int state),
+
+	TP_ARGS(name, state),
+
+	TP_STRUCT__entry(
+		__string(name, name)
+		__field(int, state);
+	),
+
+	TP_fast_assign(
+		__assign_str(name, name);
+		__entry->state = state;
+	),
+
+	TP_printk("dev=%s state=%s", __get_str(name),
+			show_pblk_state((int)__entry->state))
+
+);
+
+#endif /* !defined(_TRACE_PBLK_H) || defined(TRACE_HEADER_MULTI_READ) */
+
+/* This part must be outside protection */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH ../../../drivers/lightnvm
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE pblk-trace
+#include <trace/define_trace.h>
diff --git a/drivers/lightnvm/pblk-write.c b/drivers/lightnvm/pblk-write.c
index ee774a86cf1e..fa8726493b39 100644
--- a/drivers/lightnvm/pblk-write.c
+++ b/drivers/lightnvm/pblk-write.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2016 CNEX Labs
  * Initial release: Javier Gonzalez <javier@cnexlabs.com>
@@ -16,6 +17,7 @@
  */
 
 #include "pblk.h"
+#include "pblk-trace.h"
 
 static unsigned long pblk_end_w_bio(struct pblk *pblk, struct nvm_rq *rqd,
 				    struct pblk_c_ctx *c_ctx)
@@ -81,8 +83,7 @@ static void pblk_complete_write(struct pblk *pblk, struct nvm_rq *rqd,
 #ifdef CONFIG_NVM_PBLK_DEBUG
 	atomic_long_sub(c_ctx->nr_valid, &pblk->inflight_writes);
 #endif
-
-	pblk_up_rq(pblk, rqd->ppa_list, rqd->nr_ppas, c_ctx->lun_bitmap);
+	pblk_up_rq(pblk, c_ctx->lun_bitmap);
 
 	pos = pblk_rb_sync_init(&pblk->rwb, &flags);
 	if (pos == c_ctx->sentry) {
@@ -106,14 +107,12 @@ retry:
 /* Map remaining sectors in chunk, starting from ppa */
 static void pblk_map_remaining(struct pblk *pblk, struct ppa_addr *ppa)
 {
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
 	struct pblk_line *line;
 	struct ppa_addr map_ppa = *ppa;
 	u64 paddr;
 	int done = 0;
 
-	line = &pblk->lines[pblk_ppa_to_line(*ppa)];
+	line = pblk_ppa_to_line(pblk, *ppa);
 	spin_lock(&line->lock);
 
 	while (!done)  {
@@ -125,15 +124,7 @@ static void pblk_map_remaining(struct pblk *pblk, struct ppa_addr *ppa)
 		if (!test_and_set_bit(paddr, line->invalid_bitmap))
 			le32_add_cpu(line->vsc, -1);
 
-		if (geo->version == NVM_OCSSD_SPEC_12) {
-			map_ppa.ppa++;
-			if (map_ppa.g.pg == geo->num_pg)
-				done = 1;
-		} else {
-			map_ppa.m.sec++;
-			if (map_ppa.m.sec == geo->clba)
-				done = 1;
-		}
+		done = nvm_next_ppa_in_chk(pblk->dev, &map_ppa);
 	}
 
 	line->w_err_gc->has_write_err = 1;
@@ -149,12 +140,11 @@ static void pblk_prepare_resubmit(struct pblk *pblk, unsigned int sentry,
 	struct pblk_w_ctx *w_ctx;
 	struct ppa_addr ppa_l2p;
 	int flags;
-	unsigned int pos, i;
+	unsigned int i;
 
 	spin_lock(&pblk->trans_lock);
-	pos = sentry;
 	for (i = 0; i < nr_entries; i++) {
-		entry = &rb->entries[pos];
+		entry = &rb->entries[pblk_rb_ptr_wrap(rb, sentry, i)];
 		w_ctx = &entry->w_ctx;
 
 		/* Check if the lba has been overwritten */
@@ -168,13 +158,11 @@ static void pblk_prepare_resubmit(struct pblk *pblk, unsigned int sentry,
 		/* Release flags on write context. Protect from writes */
 		smp_store_release(&w_ctx->flags, flags);
 
-		/* Decrese the reference count to the line as we will
+		/* Decrease the reference count to the line as we will
 		 * re-map these entries
 		 */
-		line = &pblk->lines[pblk_ppa_to_line(w_ctx->ppa)];
+		line = pblk_ppa_to_line(pblk, w_ctx->ppa);
 		kref_put(&line->ref, pblk_line_put);
-
-		pos = (pos + 1) & (rb->nr_entries - 1);
 	}
 	spin_unlock(&pblk->trans_lock);
 }
@@ -208,19 +196,14 @@ static void pblk_submit_rec(struct work_struct *work)
 	struct pblk *pblk = recovery->pblk;
 	struct nvm_rq *rqd = recovery->rqd;
 	struct pblk_c_ctx *c_ctx = nvm_rq_to_pdu(rqd);
-	struct ppa_addr *ppa_list;
+	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
 
 	pblk_log_write_err(pblk, rqd);
 
-	if (rqd->nr_ppas == 1)
-		ppa_list = &rqd->ppa_addr;
-	else
-		ppa_list = rqd->ppa_list;
-
 	pblk_map_remaining(pblk, ppa_list);
 	pblk_queue_resubmit(pblk, c_ctx);
 
-	pblk_up_rq(pblk, rqd->ppa_list, rqd->nr_ppas, c_ctx->lun_bitmap);
+	pblk_up_rq(pblk, c_ctx->lun_bitmap);
 	if (c_ctx->nr_padded)
 		pblk_bio_free_pages(pblk, rqd->bio, c_ctx->nr_valid,
 							c_ctx->nr_padded);
@@ -257,11 +240,13 @@ static void pblk_end_io_write(struct nvm_rq *rqd)
 	if (rqd->error) {
 		pblk_end_w_fail(pblk, rqd);
 		return;
-	}
+	} else {
+		if (trace_pblk_chunk_state_enabled())
+			pblk_check_chunk_state_update(pblk, rqd);
 #ifdef CONFIG_NVM_PBLK_DEBUG
-	else
 		WARN_ONCE(rqd->bio->bi_status, "pblk: corrupted write error\n");
 #endif
+	}
 
 	pblk_complete_write(pblk, rqd, c_ctx);
 	atomic_dec(&pblk->inflight_io);
@@ -273,14 +258,18 @@ static void pblk_end_io_write_meta(struct nvm_rq *rqd)
 	struct pblk_g_ctx *m_ctx = nvm_rq_to_pdu(rqd);
 	struct pblk_line *line = m_ctx->private;
 	struct pblk_emeta *emeta = line->emeta;
+	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
 	int sync;
 
-	pblk_up_page(pblk, rqd->ppa_list, rqd->nr_ppas);
+	pblk_up_chunk(pblk, ppa_list[0]);
 
 	if (rqd->error) {
 		pblk_log_write_err(pblk, rqd);
 		pblk_err(pblk, "metadata I/O failed. Line %d\n", line->id);
 		line->w_err_gc->has_write_err = 1;
+	} else {
+		if (trace_pblk_chunk_state_enabled())
+			pblk_check_chunk_state_update(pblk, rqd);
 	}
 
 	sync = atomic_add_return(rqd->nr_ppas, &emeta->sync);
@@ -294,27 +283,16 @@ static void pblk_end_io_write_meta(struct nvm_rq *rqd)
 }
 
 static int pblk_alloc_w_rq(struct pblk *pblk, struct nvm_rq *rqd,
-			   unsigned int nr_secs,
-			   nvm_end_io_fn(*end_io))
+			   unsigned int nr_secs, nvm_end_io_fn(*end_io))
 {
-	struct nvm_tgt_dev *dev = pblk->dev;
-
 	/* Setup write request */
 	rqd->opcode = NVM_OP_PWRITE;
 	rqd->nr_ppas = nr_secs;
-	rqd->flags = pblk_set_progr_mode(pblk, PBLK_WRITE);
+	rqd->is_seq = 1;
 	rqd->private = pblk;
 	rqd->end_io = end_io;
 
-	rqd->meta_list = nvm_dev_dma_alloc(dev->parent, GFP_KERNEL,
-							&rqd->dma_meta_list);
-	if (!rqd->meta_list)
-		return -ENOMEM;
-
-	rqd->ppa_list = rqd->meta_list + pblk_dma_meta_size;
-	rqd->dma_ppa_list = rqd->dma_meta_list + pblk_dma_meta_size;
-
-	return 0;
+	return pblk_alloc_rqd_meta(pblk, rqd);
 }
 
 static int pblk_setup_w_rq(struct pblk *pblk, struct nvm_rq *rqd,
@@ -375,6 +353,7 @@ int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line)
 	struct pblk_line_mgmt *l_mg = &pblk->l_mg;
 	struct pblk_line_meta *lm = &pblk->lm;
 	struct pblk_emeta *emeta = meta_line->emeta;
+	struct ppa_addr *ppa_list;
 	struct pblk_g_ctx *m_ctx;
 	struct bio *bio;
 	struct nvm_rq *rqd;
@@ -409,22 +388,22 @@ int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line)
 	if (ret)
 		goto fail_free_bio;
 
+	ppa_list = nvm_rq_to_ppa_list(rqd);
 	for (i = 0; i < rqd->nr_ppas; ) {
 		spin_lock(&meta_line->lock);
 		paddr = __pblk_alloc_page(pblk, meta_line, rq_ppas);
 		spin_unlock(&meta_line->lock);
 		for (j = 0; j < rq_ppas; j++, i++, paddr++)
-			rqd->ppa_list[i] = addr_to_gen_ppa(pblk, paddr, id);
+			ppa_list[i] = addr_to_gen_ppa(pblk, paddr, id);
 	}
 
+	spin_lock(&l_mg->close_lock);
 	emeta->mem += rq_len;
-	if (emeta->mem >= lm->emeta_len[0]) {
-		spin_lock(&l_mg->close_lock);
+	if (emeta->mem >= lm->emeta_len[0])
 		list_del(&meta_line->list);
-		spin_unlock(&l_mg->close_lock);
-	}
+	spin_unlock(&l_mg->close_lock);
 
-	pblk_down_page(pblk, rqd->ppa_list, rqd->nr_ppas);
+	pblk_down_chunk(pblk, ppa_list[0]);
 
 	ret = pblk_submit_io(pblk, rqd);
 	if (ret) {
@@ -435,7 +414,7 @@ int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line)
 	return NVM_IO_OK;
 
 fail_rollback:
-	pblk_up_page(pblk, rqd->ppa_list, rqd->nr_ppas);
+	pblk_up_chunk(pblk, ppa_list[0]);
 	spin_lock(&l_mg->close_lock);
 	pblk_dealloc_page(pblk, meta_line, rq_ppas);
 	list_add(&meta_line->list, &meta_line->list);
@@ -491,14 +470,15 @@ static struct pblk_line *pblk_should_submit_meta_io(struct pblk *pblk,
 	struct pblk_line *meta_line;
 
 	spin_lock(&l_mg->close_lock);
-retry:
 	if (list_empty(&l_mg->emeta_list)) {
 		spin_unlock(&l_mg->close_lock);
 		return NULL;
 	}
 	meta_line = list_first_entry(&l_mg->emeta_list, struct pblk_line, list);
-	if (meta_line->emeta->mem >= lm->emeta_len[0])
-		goto retry;
+	if (meta_line->emeta->mem >= lm->emeta_len[0]) {
+		spin_unlock(&l_mg->close_lock);
+		return NULL;
+	}
 	spin_unlock(&l_mg->close_lock);
 
 	if (!pblk_valid_meta_ppa(pblk, meta_line, data_rqd))
diff --git a/drivers/lightnvm/pblk.h b/drivers/lightnvm/pblk.h
index 4760af7b6499..02bb2e98f8a9 100644
--- a/drivers/lightnvm/pblk.h
+++ b/drivers/lightnvm/pblk.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (C) 2015 IT University of Copenhagen (rrpc.h)
  * Copyright (C) 2016 CNEX Labs
@@ -37,8 +38,6 @@
 
 #define PBLK_SECTOR (512)
 #define PBLK_EXPOSED_PAGE_SIZE (4096)
-#define PBLK_MAX_REQ_ADDRS (64)
-#define PBLK_MAX_REQ_ADDRS_PW (6)
 
 #define PBLK_NR_CLOSE_JOBS (4)
 
@@ -81,6 +80,12 @@ enum {
 	PBLK_BLK_ST_CLOSED =	0x2,
 };
 
+enum {
+	PBLK_CHUNK_RESET_START,
+	PBLK_CHUNK_RESET_DONE,
+	PBLK_CHUNK_RESET_FAILED,
+};
+
 struct pblk_sec_meta {
 	u64 reserved;
 	__le64 lba;
@@ -99,8 +104,8 @@ enum {
 	PBLK_RL_LOW = 4
 };
 
-#define pblk_dma_meta_size (sizeof(struct pblk_sec_meta) * PBLK_MAX_REQ_ADDRS)
-#define pblk_dma_ppa_size (sizeof(u64) * PBLK_MAX_REQ_ADDRS)
+#define pblk_dma_meta_size (sizeof(struct pblk_sec_meta) * NVM_MAX_VLBA)
+#define pblk_dma_ppa_size (sizeof(u64) * NVM_MAX_VLBA)
 
 /* write buffer completion context */
 struct pblk_c_ctx {
@@ -198,6 +203,11 @@ struct pblk_rb {
 					 * will be 4KB
 					 */
 
+	unsigned int back_thres;	/* Threshold that shall be maintained by
+					 * the backpointer in order to respect
+					 * geo->mw_cunits on a per chunk basis
+					 */
+
 	struct list_head pages;		/* List of data pages */
 
 	spinlock_t w_lock;		/* Write lock */
@@ -218,8 +228,8 @@ struct pblk_lun {
 struct pblk_gc_rq {
 	struct pblk_line *line;
 	void *data;
-	u64 paddr_list[PBLK_MAX_REQ_ADDRS];
-	u64 lba_list[PBLK_MAX_REQ_ADDRS];
+	u64 paddr_list[NVM_MAX_VLBA];
+	u64 lba_list[NVM_MAX_VLBA];
 	int nr_secs;
 	int secs_to_gc;
 	struct list_head list;
@@ -532,6 +542,10 @@ struct pblk_line_mgmt {
 	struct pblk_emeta *eline_meta[PBLK_DATA_LINES];
 	unsigned long meta_bitmap;
 
+	/* Cache and mempool for map/invalid bitmaps */
+	struct kmem_cache *bitmap_cache;
+	mempool_t *bitmap_pool;
+
 	/* Helpers for fast bitmap calculations */
 	unsigned long *bb_template;
 	unsigned long *bb_aux;
@@ -725,10 +739,8 @@ struct pblk_line_ws {
 /*
  * pblk ring buffer operations
  */
-int pblk_rb_init(struct pblk_rb *rb, struct pblk_rb_entry *rb_entry_base,
-		 unsigned int power_size, unsigned int power_seg_sz);
-unsigned int pblk_rb_calculate_size(unsigned int nr_entries);
-void *pblk_rb_entries_ref(struct pblk_rb *rb);
+int pblk_rb_init(struct pblk_rb *rb, unsigned int size, unsigned int threshold,
+		 unsigned int seg_sz);
 int pblk_rb_may_write_user(struct pblk_rb *rb, struct bio *bio,
 			   unsigned int nr_entries, unsigned int *pos);
 int pblk_rb_may_write_gc(struct pblk_rb *rb, unsigned int nr_entries,
@@ -751,8 +763,8 @@ unsigned int pblk_rb_read_commit(struct pblk_rb *rb, unsigned int entries);
 
 unsigned int pblk_rb_sync_init(struct pblk_rb *rb, unsigned long *flags);
 unsigned int pblk_rb_sync_advance(struct pblk_rb *rb, unsigned int nr_entries);
-struct pblk_rb_entry *pblk_rb_sync_scan_entry(struct pblk_rb *rb,
-					      struct ppa_addr *ppa);
+unsigned int pblk_rb_ptr_wrap(struct pblk_rb *rb, unsigned int p,
+			      unsigned int nr_entries);
 void pblk_rb_sync_end(struct pblk_rb *rb, unsigned long *flags);
 unsigned int pblk_rb_flush_point_count(struct pblk_rb *rb);
 
@@ -762,7 +774,7 @@ unsigned int pblk_rb_wrap_pos(struct pblk_rb *rb, unsigned int pos);
 
 int pblk_rb_tear_down_check(struct pblk_rb *rb);
 int pblk_rb_pos_oob(struct pblk_rb *rb, u64 pos);
-void pblk_rb_data_free(struct pblk_rb *rb);
+void pblk_rb_free(struct pblk_rb *rb);
 ssize_t pblk_rb_sysfs(struct pblk_rb *rb, char *buf);
 
 /*
@@ -770,11 +782,13 @@ ssize_t pblk_rb_sysfs(struct pblk_rb *rb, char *buf);
  */
 struct nvm_rq *pblk_alloc_rqd(struct pblk *pblk, int type);
 void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int type);
+int pblk_alloc_rqd_meta(struct pblk *pblk, struct nvm_rq *rqd);
+void pblk_free_rqd_meta(struct pblk *pblk, struct nvm_rq *rqd);
 void pblk_set_sec_per_write(struct pblk *pblk, int sec_per_write);
 int pblk_setup_w_rec_rq(struct pblk *pblk, struct nvm_rq *rqd,
 			struct pblk_c_ctx *c_ctx);
 void pblk_discard(struct pblk *pblk, struct bio *bio);
-struct nvm_chk_meta *pblk_chunk_get_info(struct pblk *pblk);
+struct nvm_chk_meta *pblk_get_chunk_meta(struct pblk *pblk);
 struct nvm_chk_meta *pblk_chunk_get_off(struct pblk *pblk,
 					      struct nvm_chk_meta *lp,
 					      struct ppa_addr ppa);
@@ -782,13 +796,17 @@ void pblk_log_write_err(struct pblk *pblk, struct nvm_rq *rqd);
 void pblk_log_read_err(struct pblk *pblk, struct nvm_rq *rqd);
 int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd);
 int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd);
+int pblk_submit_io_sync_sem(struct pblk *pblk, struct nvm_rq *rqd);
 int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line);
+void pblk_check_chunk_state_update(struct pblk *pblk, struct nvm_rq *rqd);
 struct bio *pblk_bio_map_addr(struct pblk *pblk, void *data,
 			      unsigned int nr_secs, unsigned int len,
 			      int alloc_type, gfp_t gfp_mask);
 struct pblk_line *pblk_line_get(struct pblk *pblk);
 struct pblk_line *pblk_line_get_first_data(struct pblk *pblk);
 struct pblk_line *pblk_line_replace_data(struct pblk *pblk);
+void pblk_ppa_to_line_put(struct pblk *pblk, struct ppa_addr ppa);
+void pblk_rq_to_line_put(struct pblk *pblk, struct nvm_rq *rqd);
 int pblk_line_recov_alloc(struct pblk *pblk, struct pblk_line *line);
 void pblk_line_recov_close(struct pblk *pblk, struct pblk_line *line);
 struct pblk_line *pblk_line_get_data(struct pblk *pblk);
@@ -806,8 +824,8 @@ void pblk_gen_run_ws(struct pblk *pblk, struct pblk_line *line, void *priv,
 		     void (*work)(struct work_struct *), gfp_t gfp_mask,
 		     struct workqueue_struct *wq);
 u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line);
-int pblk_line_read_smeta(struct pblk *pblk, struct pblk_line *line);
-int pblk_line_read_emeta(struct pblk *pblk, struct pblk_line *line,
+int pblk_line_smeta_read(struct pblk *pblk, struct pblk_line *line);
+int pblk_line_emeta_read(struct pblk *pblk, struct pblk_line *line,
 			 void *emeta_buf);
 int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr erase_ppa);
 void pblk_line_put(struct kref *ref);
@@ -819,12 +837,11 @@ u64 pblk_alloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs);
 u64 __pblk_alloc_page(struct pblk *pblk, struct pblk_line *line, int nr_secs);
 int pblk_calc_secs(struct pblk *pblk, unsigned long secs_avail,
 		   unsigned long secs_to_flush);
-void pblk_up_page(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas);
-void pblk_down_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
+void pblk_down_rq(struct pblk *pblk, struct ppa_addr ppa,
 		  unsigned long *lun_bitmap);
-void pblk_down_page(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas);
-void pblk_up_rq(struct pblk *pblk, struct ppa_addr *ppa_list, int nr_ppas,
-		unsigned long *lun_bitmap);
+void pblk_down_chunk(struct pblk *pblk, struct ppa_addr ppa);
+void pblk_up_chunk(struct pblk *pblk, struct ppa_addr ppa);
+void pblk_up_rq(struct pblk *pblk, unsigned long *lun_bitmap);
 int pblk_bio_add_pages(struct pblk *pblk, struct bio *bio, gfp_t flags,
 		       int nr_pages);
 void pblk_bio_free_pages(struct pblk *pblk, struct bio *bio, int off,
@@ -976,17 +993,15 @@ static inline int pblk_line_vsc(struct pblk_line *line)
 	return le32_to_cpu(*line->vsc);
 }
 
-static inline int pblk_pad_distance(struct pblk *pblk)
+static inline int pblk_ppa_to_line_id(struct ppa_addr p)
 {
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-
-	return geo->mw_cunits * geo->all_luns * geo->ws_opt;
+	return p.a.blk;
 }
 
-static inline int pblk_ppa_to_line(struct ppa_addr p)
+static inline struct pblk_line *pblk_ppa_to_line(struct pblk *pblk,
+						 struct ppa_addr p)
 {
-	return p.a.blk;
+	return &pblk->lines[pblk_ppa_to_line_id(p)];
 }
 
 static inline int pblk_ppa_to_pos(struct nvm_geo *geo, struct ppa_addr p)
@@ -1034,6 +1049,25 @@ static inline struct ppa_addr addr_to_gen_ppa(struct pblk *pblk, u64 paddr,
 	return ppa;
 }
 
+static inline struct nvm_chk_meta *pblk_dev_ppa_to_chunk(struct pblk *pblk,
+							struct ppa_addr p)
+{
+	struct nvm_tgt_dev *dev = pblk->dev;
+	struct nvm_geo *geo = &dev->geo;
+	struct pblk_line *line = pblk_ppa_to_line(pblk, p);
+	int pos = pblk_ppa_to_pos(geo, p);
+
+	return &line->chks[pos];
+}
+
+static inline u64 pblk_dev_ppa_to_chunk_addr(struct pblk *pblk,
+							struct ppa_addr p)
+{
+	struct nvm_tgt_dev *dev = pblk->dev;
+
+	return dev_to_chunk_addr(dev->parent, &pblk->addrf, p);
+}
+
 static inline u64 pblk_dev_ppa_to_line_addr(struct pblk *pblk,
 							struct ppa_addr p)
 {
@@ -1067,86 +1101,16 @@ static inline u64 pblk_dev_ppa_to_line_addr(struct pblk *pblk,
 
 static inline struct ppa_addr pblk_ppa32_to_ppa64(struct pblk *pblk, u32 ppa32)
 {
-	struct ppa_addr ppa64;
-
-	ppa64.ppa = 0;
-
-	if (ppa32 == -1) {
-		ppa64.ppa = ADDR_EMPTY;
-	} else if (ppa32 & (1U << 31)) {
-		ppa64.c.line = ppa32 & ((~0U) >> 1);
-		ppa64.c.is_cached = 1;
-	} else {
-		struct nvm_tgt_dev *dev = pblk->dev;
-		struct nvm_geo *geo = &dev->geo;
-
-		if (geo->version == NVM_OCSSD_SPEC_12) {
-			struct nvm_addrf_12 *ppaf =
-					(struct nvm_addrf_12 *)&pblk->addrf;
-
-			ppa64.g.ch = (ppa32 & ppaf->ch_mask) >>
-							ppaf->ch_offset;
-			ppa64.g.lun = (ppa32 & ppaf->lun_mask) >>
-							ppaf->lun_offset;
-			ppa64.g.blk = (ppa32 & ppaf->blk_mask) >>
-							ppaf->blk_offset;
-			ppa64.g.pg = (ppa32 & ppaf->pg_mask) >>
-							ppaf->pg_offset;
-			ppa64.g.pl = (ppa32 & ppaf->pln_mask) >>
-							ppaf->pln_offset;
-			ppa64.g.sec = (ppa32 & ppaf->sec_mask) >>
-							ppaf->sec_offset;
-		} else {
-			struct nvm_addrf *lbaf = &pblk->addrf;
-
-			ppa64.m.grp = (ppa32 & lbaf->ch_mask) >>
-							lbaf->ch_offset;
-			ppa64.m.pu = (ppa32 & lbaf->lun_mask) >>
-							lbaf->lun_offset;
-			ppa64.m.chk = (ppa32 & lbaf->chk_mask) >>
-							lbaf->chk_offset;
-			ppa64.m.sec = (ppa32 & lbaf->sec_mask) >>
-							lbaf->sec_offset;
-		}
-	}
+	struct nvm_tgt_dev *dev = pblk->dev;
 
-	return ppa64;
+	return nvm_ppa32_to_ppa64(dev->parent, &pblk->addrf, ppa32);
 }
 
 static inline u32 pblk_ppa64_to_ppa32(struct pblk *pblk, struct ppa_addr ppa64)
 {
-	u32 ppa32 = 0;
-
-	if (ppa64.ppa == ADDR_EMPTY) {
-		ppa32 = ~0U;
-	} else if (ppa64.c.is_cached) {
-		ppa32 |= ppa64.c.line;
-		ppa32 |= 1U << 31;
-	} else {
-		struct nvm_tgt_dev *dev = pblk->dev;
-		struct nvm_geo *geo = &dev->geo;
-
-		if (geo->version == NVM_OCSSD_SPEC_12) {
-			struct nvm_addrf_12 *ppaf =
-					(struct nvm_addrf_12 *)&pblk->addrf;
-
-			ppa32 |= ppa64.g.ch << ppaf->ch_offset;
-			ppa32 |= ppa64.g.lun << ppaf->lun_offset;
-			ppa32 |= ppa64.g.blk << ppaf->blk_offset;
-			ppa32 |= ppa64.g.pg << ppaf->pg_offset;
-			ppa32 |= ppa64.g.pl << ppaf->pln_offset;
-			ppa32 |= ppa64.g.sec << ppaf->sec_offset;
-		} else {
-			struct nvm_addrf *lbaf = &pblk->addrf;
-
-			ppa32 |= ppa64.m.grp << lbaf->ch_offset;
-			ppa32 |= ppa64.m.pu << lbaf->lun_offset;
-			ppa32 |= ppa64.m.chk << lbaf->chk_offset;
-			ppa32 |= ppa64.m.sec << lbaf->sec_offset;
-		}
-	}
+	struct nvm_tgt_dev *dev = pblk->dev;
 
-	return ppa32;
+	return nvm_ppa64_to_ppa32(dev->parent, &pblk->addrf, ppa64);
 }
 
 static inline struct ppa_addr pblk_trans_map_get(struct pblk *pblk,
@@ -1255,44 +1219,6 @@ static inline u32 pblk_calc_emeta_crc(struct pblk *pblk,
 	return crc;
 }
 
-static inline int pblk_set_progr_mode(struct pblk *pblk, int type)
-{
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-	int flags;
-
-	if (geo->version == NVM_OCSSD_SPEC_20)
-		return 0;
-
-	flags = geo->pln_mode >> 1;
-
-	if (type == PBLK_WRITE)
-		flags |= NVM_IO_SCRAMBLE_ENABLE;
-
-	return flags;
-}
-
-enum {
-	PBLK_READ_RANDOM	= 0,
-	PBLK_READ_SEQUENTIAL	= 1,
-};
-
-static inline int pblk_set_read_mode(struct pblk *pblk, int type)
-{
-	struct nvm_tgt_dev *dev = pblk->dev;
-	struct nvm_geo *geo = &dev->geo;
-	int flags;
-
-	if (geo->version == NVM_OCSSD_SPEC_20)
-		return 0;
-
-	flags = NVM_IO_SUSPEND | NVM_IO_SCRAMBLE_ENABLE;
-	if (type == PBLK_READ_SEQUENTIAL)
-		flags |= geo->pln_mode >> 1;
-
-	return flags;
-}
-
 static inline int pblk_io_aligned(struct pblk *pblk, int nr_secs)
 {
 	return !(nr_secs % pblk->min_write_pgs);
@@ -1375,9 +1301,7 @@ static inline int pblk_boundary_ppa_checks(struct nvm_tgt_dev *tgt_dev,
 static inline int pblk_check_io(struct pblk *pblk, struct nvm_rq *rqd)
 {
 	struct nvm_tgt_dev *dev = pblk->dev;
-	struct ppa_addr *ppa_list;
-
-	ppa_list = (rqd->nr_ppas > 1) ? rqd->ppa_list : &rqd->ppa_addr;
+	struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
 
 	if (pblk_boundary_ppa_checks(dev, ppa_list, rqd->nr_ppas)) {
 		WARN_ON(1);
@@ -1386,12 +1310,10 @@ static inline int pblk_check_io(struct pblk *pblk, struct nvm_rq *rqd)
 
 	if (rqd->opcode == NVM_OP_PWRITE) {
 		struct pblk_line *line;
-		struct ppa_addr ppa;
 		int i;
 
 		for (i = 0; i < rqd->nr_ppas; i++) {
-			ppa = ppa_list[i];
-			line = &pblk->lines[pblk_ppa_to_line(ppa)];
+			line = pblk_ppa_to_line(pblk, ppa_list[i]);
 
 			spin_lock(&line->lock);
 			if (line->state != PBLK_LINESTATE_OPEN) {
@@ -1441,4 +1363,11 @@ static inline void pblk_setup_uuid(struct pblk *pblk)
 	uuid_le_gen(&uuid);
 	memcpy(pblk->instance_uuid, uuid.b, 16);
 }
+
+static inline char *pblk_disk_name(struct pblk *pblk)
+{
+	struct gendisk *disk = pblk->disk;
+
+	return disk->disk_name;
+}
 #endif /* PBLK_H_ */
diff --git a/drivers/md/bcache/alloc.c b/drivers/md/bcache/alloc.c
index 7a28232d868b..5002838ea476 100644
--- a/drivers/md/bcache/alloc.c
+++ b/drivers/md/bcache/alloc.c
@@ -484,7 +484,7 @@ int __bch_bucket_alloc_set(struct cache_set *c, unsigned int reserve,
 	int i;
 
 	lockdep_assert_held(&c->bucket_lock);
-	BUG_ON(!n || n > c->caches_loaded || n > 8);
+	BUG_ON(!n || n > c->caches_loaded || n > MAX_CACHES_PER_SET);
 
 	bkey_init(k);
 
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index 954dad29e6e8..b61b83bbcfff 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -1004,7 +1004,7 @@ void bch_open_buckets_free(struct cache_set *c);
 int bch_cache_allocator_start(struct cache *ca);
 
 void bch_debug_exit(void);
-void bch_debug_init(struct kobject *kobj);
+void bch_debug_init(void);
 void bch_request_exit(void);
 int bch_request_init(void);
 
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index e7d4817681f2..3f4211b5cd33 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -2434,7 +2434,7 @@ static int refill_keybuf_fn(struct btree_op *op, struct btree *b,
 	struct keybuf *buf = refill->buf;
 	int ret = MAP_CONTINUE;
 
-	if (bkey_cmp(k, refill->end) >= 0) {
+	if (bkey_cmp(k, refill->end) > 0) {
 		ret = MAP_DONE;
 		goto out;
 	}
diff --git a/drivers/md/bcache/closure.h b/drivers/md/bcache/closure.h
index eca0d496b686..c88cdc4ae4ec 100644
--- a/drivers/md/bcache/closure.h
+++ b/drivers/md/bcache/closure.h
@@ -345,7 +345,8 @@ do {									\
 } while (0)
 
 /**
- * closure_return - finish execution of a closure, with destructor
+ * closure_return_with_destructor - finish execution of a closure,
+ *				    with destructor
  *
  * Works like closure_return(), except @destructor will be called when all
  * outstanding refs on @cl have been dropped; @destructor may be used to safely
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c
index 06da66b2488a..8f448b9c96a1 100644
--- a/drivers/md/bcache/debug.c
+++ b/drivers/md/bcache/debug.c
@@ -253,7 +253,7 @@ void bch_debug_exit(void)
 		debugfs_remove_recursive(bcache_debug);
 }
 
-void __init bch_debug_init(struct kobject *kobj)
+void __init bch_debug_init(void)
 {
 	/*
 	 * it is unnecessary to check return value of
diff --git a/drivers/md/bcache/extents.c b/drivers/md/bcache/extents.c
index c809724e6571..956004366699 100644
--- a/drivers/md/bcache/extents.c
+++ b/drivers/md/bcache/extents.c
@@ -553,7 +553,7 @@ static bool bch_extent_bad(struct btree_keys *bk, const struct bkey *k)
 	for (i = 0; i < KEY_PTRS(k); i++) {
 		stale = ptr_stale(b->c, k, i);
 
-		btree_bug_on(stale > 96, b,
+		btree_bug_on(stale > BUCKET_GC_GEN_MAX, b,
 			     "key too stale: %i, need_gc %u",
 			     stale, b->c->need_gc);
 
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 51be355a3309..3bf35914bb57 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -395,7 +395,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
 	 * unless the read-ahead request is for metadata (eg, for gfs2).
 	 */
 	if (bio->bi_opf & (REQ_RAHEAD|REQ_BACKGROUND) &&
-	    !(bio->bi_opf & REQ_META))
+	    !(bio->bi_opf & REQ_PRIO))
 		goto skip;
 
 	if (bio->bi_iter.bi_sector & (c->sb.block_size - 1) ||
@@ -850,7 +850,7 @@ static void cached_dev_read_done_bh(struct closure *cl)
 
 	bch_mark_cache_accounting(s->iop.c, s->d,
 				  !s->cache_missed, s->iop.bypass);
-	trace_bcache_read(s->orig_bio, !s->cache_miss, s->iop.bypass);
+	trace_bcache_read(s->orig_bio, !s->cache_missed, s->iop.bypass);
 
 	if (s->iop.status)
 		continue_at_nobarrier(cl, cached_dev_read_error, bcache_wq);
@@ -877,7 +877,7 @@ static int cached_dev_cache_miss(struct btree *b, struct search *s,
 	}
 
 	if (!(bio->bi_opf & REQ_RAHEAD) &&
-	    !(bio->bi_opf & REQ_META) &&
+	    !(bio->bi_opf & REQ_PRIO) &&
 	    s->iop.c->gc_stats.in_use < CUTOFF_CACHE_READA)
 		reada = min_t(sector_t, dc->readahead >> 9,
 			      get_capacity(bio->bi_disk) - bio_end_sector(bio));
@@ -1218,6 +1218,9 @@ static int cached_dev_ioctl(struct bcache_device *d, fmode_t mode,
 {
 	struct cached_dev *dc = container_of(d, struct cached_dev, disk);
 
+	if (dc->io_disable)
+		return -EIO;
+
 	return __blkdev_driver_ioctl(dc->bdev, mode, cmd, arg);
 }
 
diff --git a/drivers/md/bcache/request.h b/drivers/md/bcache/request.h
index aa055cfeb099..721bf336ed1a 100644
--- a/drivers/md/bcache/request.h
+++ b/drivers/md/bcache/request.h
@@ -39,6 +39,6 @@ void bch_data_insert(struct closure *cl);
 void bch_cached_dev_request_init(struct cached_dev *dc);
 void bch_flash_dev_request_init(struct bcache_device *d);
 
-extern struct kmem_cache *bch_search_cache, *bch_passthrough_cache;
+extern struct kmem_cache *bch_search_cache;
 
 #endif /* _BCACHE_REQUEST_H_ */
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 30ba9aeb5ee8..7bbd670a5a84 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -418,6 +418,7 @@ static int __uuid_write(struct cache_set *c)
 {
 	BKEY_PADDED(key) k;
 	struct closure cl;
+	struct cache *ca;
 
 	closure_init_stack(&cl);
 	lockdep_assert_held(&bch_register_lock);
@@ -429,6 +430,10 @@ static int __uuid_write(struct cache_set *c)
 	uuid_io(c, REQ_OP_WRITE, 0, &k.key, &cl);
 	closure_sync(&cl);
 
+	/* Only one bucket used for uuid write */
+	ca = PTR_CACHE(c, &k.key, 0);
+	atomic_long_add(ca->sb.bucket_size, &ca->meta_sectors_written);
+
 	bkey_copy(&c->uuid_bucket, &k.key);
 	bkey_put(c, &k.key);
 	return 0;
@@ -643,10 +648,6 @@ static int ioctl_dev(struct block_device *b, fmode_t mode,
 		     unsigned int cmd, unsigned long arg)
 {
 	struct bcache_device *d = b->bd_disk->private_data;
-	struct cached_dev *dc = container_of(d, struct cached_dev, disk);
-
-	if (dc->io_disable)
-		return -EIO;
 
 	return d->ioctl(d, mode, cmd, arg);
 }
@@ -1008,6 +1009,7 @@ static void cached_dev_detach_finish(struct work_struct *w)
 	bch_write_bdev_super(dc, &cl);
 	closure_sync(&cl);
 
+	calc_cached_dev_sectors(dc->disk.c);
 	bcache_device_detach(&dc->disk);
 	list_move(&dc->list, &uncached_devices);
 
@@ -1152,11 +1154,12 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c,
 	}
 
 	if (BDEV_STATE(&dc->sb) == BDEV_STATE_DIRTY) {
-		bch_sectors_dirty_init(&dc->disk);
 		atomic_set(&dc->has_dirty, 1);
 		bch_writeback_queue(dc);
 	}
 
+	bch_sectors_dirty_init(&dc->disk);
+
 	bch_cached_dev_run(dc);
 	bcache_device_link(&dc->disk, c, "bdev");
 	atomic_inc(&c->attached_dev_nr);
@@ -2049,6 +2052,8 @@ static int cache_alloc(struct cache *ca)
 	size_t free;
 	size_t btree_buckets;
 	struct bucket *b;
+	int ret = -ENOMEM;
+	const char *err = NULL;
 
 	__module_get(THIS_MODULE);
 	kobject_init(&ca->kobj, &bch_cache_ktype);
@@ -2066,27 +2071,93 @@ static int cache_alloc(struct cache *ca)
 	 */
 	btree_buckets = ca->sb.njournal_buckets ?: 8;
 	free = roundup_pow_of_two(ca->sb.nbuckets) >> 10;
+	if (!free) {
+		ret = -EPERM;
+		err = "ca->sb.nbuckets is too small";
+		goto err_free;
+	}
 
-	if (!init_fifo(&ca->free[RESERVE_BTREE], btree_buckets, GFP_KERNEL) ||
-	    !init_fifo_exact(&ca->free[RESERVE_PRIO], prio_buckets(ca), GFP_KERNEL) ||
-	    !init_fifo(&ca->free[RESERVE_MOVINGGC], free, GFP_KERNEL) ||
-	    !init_fifo(&ca->free[RESERVE_NONE], free, GFP_KERNEL) ||
-	    !init_fifo(&ca->free_inc,	free << 2, GFP_KERNEL) ||
-	    !init_heap(&ca->heap,	free << 3, GFP_KERNEL) ||
-	    !(ca->buckets	= vzalloc(array_size(sizeof(struct bucket),
-						     ca->sb.nbuckets))) ||
-	    !(ca->prio_buckets	= kzalloc(array3_size(sizeof(uint64_t),
-						      prio_buckets(ca), 2),
-					  GFP_KERNEL)) ||
-	    !(ca->disk_buckets	= alloc_bucket_pages(GFP_KERNEL, ca)))
-		return -ENOMEM;
+	if (!init_fifo(&ca->free[RESERVE_BTREE], btree_buckets,
+						GFP_KERNEL)) {
+		err = "ca->free[RESERVE_BTREE] alloc failed";
+		goto err_btree_alloc;
+	}
+
+	if (!init_fifo_exact(&ca->free[RESERVE_PRIO], prio_buckets(ca),
+							GFP_KERNEL)) {
+		err = "ca->free[RESERVE_PRIO] alloc failed";
+		goto err_prio_alloc;
+	}
+
+	if (!init_fifo(&ca->free[RESERVE_MOVINGGC], free, GFP_KERNEL)) {
+		err = "ca->free[RESERVE_MOVINGGC] alloc failed";
+		goto err_movinggc_alloc;
+	}
+
+	if (!init_fifo(&ca->free[RESERVE_NONE], free, GFP_KERNEL)) {
+		err = "ca->free[RESERVE_NONE] alloc failed";
+		goto err_none_alloc;
+	}
+
+	if (!init_fifo(&ca->free_inc, free << 2, GFP_KERNEL)) {
+		err = "ca->free_inc alloc failed";
+		goto err_free_inc_alloc;
+	}
+
+	if (!init_heap(&ca->heap, free << 3, GFP_KERNEL)) {
+		err = "ca->heap alloc failed";
+		goto err_heap_alloc;
+	}
+
+	ca->buckets = vzalloc(array_size(sizeof(struct bucket),
+			      ca->sb.nbuckets));
+	if (!ca->buckets) {
+		err = "ca->buckets alloc failed";
+		goto err_buckets_alloc;
+	}
+
+	ca->prio_buckets = kzalloc(array3_size(sizeof(uint64_t),
+				   prio_buckets(ca), 2),
+				   GFP_KERNEL);
+	if (!ca->prio_buckets) {
+		err = "ca->prio_buckets alloc failed";
+		goto err_prio_buckets_alloc;
+	}
+
+	ca->disk_buckets = alloc_bucket_pages(GFP_KERNEL, ca);
+	if (!ca->disk_buckets) {
+		err = "ca->disk_buckets alloc failed";
+		goto err_disk_buckets_alloc;
+	}
 
 	ca->prio_last_buckets = ca->prio_buckets + prio_buckets(ca);
 
 	for_each_bucket(b, ca)
 		atomic_set(&b->pin, 0);
-
 	return 0;
+
+err_disk_buckets_alloc:
+	kfree(ca->prio_buckets);
+err_prio_buckets_alloc:
+	vfree(ca->buckets);
+err_buckets_alloc:
+	free_heap(&ca->heap);
+err_heap_alloc:
+	free_fifo(&ca->free_inc);
+err_free_inc_alloc:
+	free_fifo(&ca->free[RESERVE_NONE]);
+err_none_alloc:
+	free_fifo(&ca->free[RESERVE_MOVINGGC]);
+err_movinggc_alloc:
+	free_fifo(&ca->free[RESERVE_PRIO]);
+err_prio_alloc:
+	free_fifo(&ca->free[RESERVE_BTREE]);
+err_btree_alloc:
+err_free:
+	module_put(THIS_MODULE);
+	if (err)
+		pr_notice("error %s: %s", ca->cache_dev_name, err);
+	return ret;
 }
 
 static int register_cache(struct cache_sb *sb, struct page *sb_page,
@@ -2112,6 +2183,8 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
 		blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
 		if (ret == -ENOMEM)
 			err = "cache_alloc(): -ENOMEM";
+		else if (ret == -EPERM)
+			err = "cache_alloc(): cache device is too small";
 		else
 			err = "cache_alloc(): unknown error";
 		goto err;
@@ -2386,7 +2459,7 @@ static int __init bcache_init(void)
 	    sysfs_create_files(bcache_kobj, files))
 		goto err;
 
-	bch_debug_init(bcache_kobj);
+	bch_debug_init();
 	closure_debug_init();
 
 	return 0;
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index 150cf4f4cf74..26f035a0c5b9 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -285,6 +285,7 @@ STORE(__cached_dev)
 			    1, WRITEBACK_RATE_UPDATE_SECS_MAX);
 	d_strtoul(writeback_rate_i_term_inverse);
 	d_strtoul_nonzero(writeback_rate_p_term_inverse);
+	d_strtoul_nonzero(writeback_rate_minimum);
 
 	sysfs_strtoul_clamp(io_error_limit, dc->error_limit, 0, INT_MAX);
 
@@ -412,6 +413,7 @@ static struct attribute *bch_cached_dev_files[] = {
 	&sysfs_writeback_rate_update_seconds,
 	&sysfs_writeback_rate_i_term_inverse,
 	&sysfs_writeback_rate_p_term_inverse,
+	&sysfs_writeback_rate_minimum,
 	&sysfs_writeback_rate_debug,
 	&sysfs_errors,
 	&sysfs_io_error_limit,
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index ac1cffd2a09b..f3fb5bb8c82a 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -542,7 +542,7 @@ static void raid0_handle_discard(struct mddev *mddev, struct bio *bio)
 		    !discard_bio)
 			continue;
 		bio_chain(discard_bio, bio);
-		bio_clone_blkcg_association(discard_bio, bio);
+		bio_clone_blkg_association(discard_bio, bio);
 		if (mddev->gendisk)
 			trace_block_bio_remap(bdev_get_queue(rdev->bdev),
 				discard_bio, disk_devt(mddev->gendisk),
diff --git a/drivers/memstick/core/ms_block.c b/drivers/memstick/core/ms_block.c
index 716fc8ed31d3..8a02f11076f9 100644
--- a/drivers/memstick/core/ms_block.c
+++ b/drivers/memstick/core/ms_block.c
@@ -2146,7 +2146,7 @@ static int msb_init_disk(struct memstick_dev *card)
 		set_disk_ro(msb->disk, 1);
 
 	msb_start(card);
-	device_add_disk(&card->dev, msb->disk);
+	device_add_disk(&card->dev, msb->disk, NULL);
 	dbg("Disk added");
 	return 0;
 
diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index 5ee932631fae..0cd30dcb6801 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -1236,7 +1236,7 @@ static int mspro_block_init_disk(struct memstick_dev *card)
 	set_capacity(msb->disk, capacity);
 	dev_dbg(&card->dev, "capacity set %ld\n", capacity);
 
-	device_add_disk(&card->dev, msb->disk);
+	device_add_disk(&card->dev, msb->disk, NULL);
 	msb->active = 1;
 	return 0;
 
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index e201ccb3fda4..c35b5b08bb33 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -2708,7 +2708,7 @@ static int mmc_add_disk(struct mmc_blk_data *md)
 	int ret;
 	struct mmc_card *card = md->queue.card;
 
-	device_add_disk(md->parent, md->disk);
+	device_add_disk(md->parent, md->disk, NULL);
 	md->force_ro.show = force_ro_show;
 	md->force_ro.store = force_ro_store;
 	sysfs_attr_init(&md->force_ro.attr);
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 29c0bfd74e8a..b0d44f9214b0 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -27,6 +27,7 @@
 #include <linux/mtd/blktrans.h>
 #include <linux/mtd/mtd.h>
 #include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/blkpg.h>
 #include <linux/spinlock.h>
 #include <linux/hdreg.h>
@@ -45,6 +46,8 @@ static void blktrans_dev_release(struct kref *kref)
 
 	dev->disk->private_data = NULL;
 	blk_cleanup_queue(dev->rq);
+	blk_mq_free_tag_set(dev->tag_set);
+	kfree(dev->tag_set);
 	put_disk(dev->disk);
 	list_del(&dev->list);
 	kfree(dev);
@@ -134,28 +137,39 @@ int mtd_blktrans_cease_background(struct mtd_blktrans_dev *dev)
 }
 EXPORT_SYMBOL_GPL(mtd_blktrans_cease_background);
 
-static void mtd_blktrans_work(struct work_struct *work)
+static struct request *mtd_next_request(struct mtd_blktrans_dev *dev)
+{
+	struct request *rq;
+
+	rq = list_first_entry_or_null(&dev->rq_list, struct request, queuelist);
+	if (rq) {
+		list_del_init(&rq->queuelist);
+		blk_mq_start_request(rq);
+		return rq;
+	}
+
+	return NULL;
+}
+
+static void mtd_blktrans_work(struct mtd_blktrans_dev *dev)
+	__releases(&dev->queue_lock)
+	__acquires(&dev->queue_lock)
 {
-	struct mtd_blktrans_dev *dev =
-		container_of(work, struct mtd_blktrans_dev, work);
 	struct mtd_blktrans_ops *tr = dev->tr;
-	struct request_queue *rq = dev->rq;
 	struct request *req = NULL;
 	int background_done = 0;
 
-	spin_lock_irq(rq->queue_lock);
-
 	while (1) {
 		blk_status_t res;
 
 		dev->bg_stop = false;
-		if (!req && !(req = blk_fetch_request(rq))) {
+		if (!req && !(req = mtd_next_request(dev))) {
 			if (tr->background && !background_done) {
-				spin_unlock_irq(rq->queue_lock);
+				spin_unlock_irq(&dev->queue_lock);
 				mutex_lock(&dev->lock);
 				tr->background(dev);
 				mutex_unlock(&dev->lock);
-				spin_lock_irq(rq->queue_lock);
+				spin_lock_irq(&dev->queue_lock);
 				/*
 				 * Do background processing just once per idle
 				 * period.
@@ -166,35 +180,39 @@ static void mtd_blktrans_work(struct work_struct *work)
 			break;
 		}
 
-		spin_unlock_irq(rq->queue_lock);
+		spin_unlock_irq(&dev->queue_lock);
 
 		mutex_lock(&dev->lock);
 		res = do_blktrans_request(dev->tr, dev, req);
 		mutex_unlock(&dev->lock);
 
-		spin_lock_irq(rq->queue_lock);
-
-		if (!__blk_end_request_cur(req, res))
+		if (!blk_update_request(req, res, blk_rq_cur_bytes(req))) {
+			__blk_mq_end_request(req, res);
 			req = NULL;
+		}
 
 		background_done = 0;
+		spin_lock_irq(&dev->queue_lock);
 	}
-
-	spin_unlock_irq(rq->queue_lock);
 }
 
-static void mtd_blktrans_request(struct request_queue *rq)
+static blk_status_t mtd_queue_rq(struct blk_mq_hw_ctx *hctx,
+				 const struct blk_mq_queue_data *bd)
 {
 	struct mtd_blktrans_dev *dev;
-	struct request *req = NULL;
 
-	dev = rq->queuedata;
+	dev = hctx->queue->queuedata;
+	if (!dev) {
+		blk_mq_start_request(bd->rq);
+		return BLK_STS_IOERR;
+	}
+
+	spin_lock_irq(&dev->queue_lock);
+	list_add_tail(&bd->rq->queuelist, &dev->rq_list);
+	mtd_blktrans_work(dev);
+	spin_unlock_irq(&dev->queue_lock);
 
-	if (!dev)
-		while ((req = blk_fetch_request(rq)) != NULL)
-			__blk_end_request_all(req, BLK_STS_IOERR);
-	else
-		queue_work(dev->wq, &dev->work);
+	return BLK_STS_OK;
 }
 
 static int blktrans_open(struct block_device *bdev, fmode_t mode)
@@ -329,6 +347,10 @@ static const struct block_device_operations mtd_block_ops = {
 	.getgeo		= blktrans_getgeo,
 };
 
+static const struct blk_mq_ops mtd_mq_ops = {
+	.queue_rq	= mtd_queue_rq,
+};
+
 int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
 {
 	struct mtd_blktrans_ops *tr = new->tr;
@@ -416,11 +438,20 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
 
 	/* Create the request queue */
 	spin_lock_init(&new->queue_lock);
-	new->rq = blk_init_queue(mtd_blktrans_request, &new->queue_lock);
+	INIT_LIST_HEAD(&new->rq_list);
 
-	if (!new->rq)
+	new->tag_set = kzalloc(sizeof(*new->tag_set), GFP_KERNEL);
+	if (!new->tag_set)
 		goto error3;
 
+	new->rq = blk_mq_init_sq_queue(new->tag_set, &mtd_mq_ops, 2,
+				BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING);
+	if (IS_ERR(new->rq)) {
+		ret = PTR_ERR(new->rq);
+		new->rq = NULL;
+		goto error4;
+	}
+
 	if (tr->flush)
 		blk_queue_write_cache(new->rq, true, false);
 
@@ -437,17 +468,10 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
 
 	gd->queue = new->rq;
 
-	/* Create processing workqueue */
-	new->wq = alloc_workqueue("%s%d", 0, 0,
-				  tr->name, new->mtd->index);
-	if (!new->wq)
-		goto error4;
-	INIT_WORK(&new->work, mtd_blktrans_work);
-
 	if (new->readonly)
 		set_disk_ro(gd, 1);
 
-	device_add_disk(&new->mtd->dev, gd);
+	device_add_disk(&new->mtd->dev, gd, NULL);
 
 	if (new->disk_attributes) {
 		ret = sysfs_create_group(&disk_to_dev(gd)->kobj,
@@ -456,7 +480,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
 	}
 	return 0;
 error4:
-	blk_cleanup_queue(new->rq);
+	kfree(new->tag_set);
 error3:
 	put_disk(new->disk);
 error2:
@@ -481,15 +505,17 @@ int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old)
 	/* Stop new requests to arrive */
 	del_gendisk(old->disk);
 
-	/* Stop workqueue. This will perform any pending request. */
-	destroy_workqueue(old->wq);
-
 	/* Kill current requests */
 	spin_lock_irqsave(&old->queue_lock, flags);
 	old->rq->queuedata = NULL;
-	blk_start_queue(old->rq);
 	spin_unlock_irqrestore(&old->queue_lock, flags);
 
+	/* freeze+quiesce queue to ensure all requests are flushed */
+	blk_mq_freeze_queue(old->rq);
+	blk_mq_quiesce_queue(old->rq);
+	blk_mq_unquiesce_queue(old->rq);
+	blk_mq_unfreeze_queue(old->rq);
+
 	/* If the device is currently open, tell trans driver to close it,
 		then put mtd device, and don't touch it again */
 	mutex_lock(&old->lock);
diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c
index 62e9cb167aad..db45c6bbb7bb 100644
--- a/drivers/nvdimm/blk.c
+++ b/drivers/nvdimm/blk.c
@@ -290,7 +290,7 @@ static int nsblk_attach_disk(struct nd_namespace_blk *nsblk)
 	}
 
 	set_capacity(disk, available_disk_size >> SECTOR_SHIFT);
-	device_add_disk(dev, disk);
+	device_add_disk(dev, disk, NULL);
 	revalidate_disk(disk);
 	return 0;
 }
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 0360c015f658..b123b0dcf274 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1556,7 +1556,7 @@ static int btt_blk_init(struct btt *btt)
 		}
 	}
 	set_capacity(btt->btt_disk, btt->nlba * btt->sector_size >> 9);
-	device_add_disk(&btt->nd_btt->dev, btt->btt_disk);
+	device_add_disk(&btt->nd_btt->dev, btt->btt_disk, NULL);
 	btt->nd_btt->size = btt->nlba * (u64)btt->sector_size;
 	revalidate_disk(btt->btt_disk);
 
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 6071e2942053..a75d10c23d80 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -474,7 +474,7 @@ static int pmem_attach_disk(struct device *dev,
 	gendev = disk_to_dev(disk);
 	gendev->groups = pmem_attribute_groups;
 
-	device_add_disk(dev, disk);
+	device_add_disk(dev, disk, NULL);
 	if (devm_add_action_or_reset(dev, pmem_release_disk, pmem))
 		return -ENOMEM;
 
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 6bb9908bf46f..9e4a30b05bd2 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -971,7 +971,7 @@ static int nvme_identify_ns_descs(struct nvme_ctrl *ctrl, unsigned nsid,
 			uuid_copy(&ids->uuid, data + pos + sizeof(*cur));
 			break;
 		default:
-			/* Skip unnkown types */
+			/* Skip unknown types */
 			len = cur->nidl;
 			break;
 		}
@@ -1132,7 +1132,7 @@ static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
 
 	return nvme_submit_user_cmd(ns->queue, &c,
 			(void __user *)(uintptr_t)io.addr, length,
-			metadata, meta_len, io.slba, NULL, 0);
+			metadata, meta_len, lower_32_bits(io.slba), NULL, 0);
 }
 
 static u32 nvme_known_admin_effects(u8 opcode)
@@ -2076,7 +2076,7 @@ static void nvme_init_subnqn(struct nvme_subsystem *subsys, struct nvme_ctrl *ct
 
 	nqnlen = strnlen(id->subnqn, NVMF_NQN_SIZE);
 	if (nqnlen > 0 && nqnlen < NVMF_NQN_SIZE) {
-		strncpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);
+		strlcpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);
 		return;
 	}
 
@@ -2729,11 +2729,19 @@ static umode_t nvme_ns_id_attrs_are_visible(struct kobject *kobj,
 	return a->mode;
 }
 
-const struct attribute_group nvme_ns_id_attr_group = {
+static const struct attribute_group nvme_ns_id_attr_group = {
 	.attrs		= nvme_ns_id_attrs,
 	.is_visible	= nvme_ns_id_attrs_are_visible,
 };
 
+const struct attribute_group *nvme_ns_id_attr_groups[] = {
+	&nvme_ns_id_attr_group,
+#ifdef CONFIG_NVM
+	&nvme_nvm_attr_group,
+#endif
+	NULL,
+};
+
 #define nvme_show_str_function(field)						\
 static ssize_t  field##_show(struct device *dev,				\
 			    struct device_attribute *attr, char *buf)		\
@@ -2900,9 +2908,14 @@ static struct nvme_ns_head *nvme_alloc_ns_head(struct nvme_ctrl *ctrl,
 		unsigned nsid, struct nvme_id_ns *id)
 {
 	struct nvme_ns_head *head;
+	size_t size = sizeof(*head);
 	int ret = -ENOMEM;
 
-	head = kzalloc(sizeof(*head), GFP_KERNEL);
+#ifdef CONFIG_NVME_MULTIPATH
+	size += num_possible_nodes() * sizeof(struct nvme_ns *);
+#endif
+
+	head = kzalloc(size, GFP_KERNEL);
 	if (!head)
 		goto out;
 	ret = ida_simple_get(&ctrl->subsys->ns_ida, 1, 0, GFP_KERNEL);
@@ -3099,14 +3112,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 
 	nvme_get_ctrl(ctrl);
 
-	device_add_disk(ctrl->device, ns->disk);
-	if (sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
-					&nvme_ns_id_attr_group))
-		pr_warn("%s: failed to create sysfs group for identification\n",
-			ns->disk->disk_name);
-	if (ns->ndev && nvme_nvm_register_sysfs(ns))
-		pr_warn("%s: failed to register lightnvm sysfs group for identification\n",
-			ns->disk->disk_name);
+	device_add_disk(ctrl->device, ns->disk, nvme_ns_id_attr_groups);
 
 	nvme_mpath_add_disk(ns, id);
 	nvme_fault_inject_init(ns);
@@ -3132,10 +3138,6 @@ static void nvme_ns_remove(struct nvme_ns *ns)
 
 	nvme_fault_inject_fini(ns);
 	if (ns->disk && ns->disk->flags & GENHD_FL_UP) {
-		sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
-					&nvme_ns_id_attr_group);
-		if (ns->ndev)
-			nvme_nvm_unregister_sysfs(ns);
 		del_gendisk(ns->disk);
 		blk_cleanup_queue(ns->queue);
 		if (blk_get_integrity(ns->disk))
@@ -3411,16 +3413,21 @@ static void nvme_fw_act_work(struct work_struct *work)
 
 static void nvme_handle_aen_notice(struct nvme_ctrl *ctrl, u32 result)
 {
-	switch ((result & 0xff00) >> 8) {
+	u32 aer_notice_type = (result & 0xff00) >> 8;
+
+	switch (aer_notice_type) {
 	case NVME_AER_NOTICE_NS_CHANGED:
+		trace_nvme_async_event(ctrl, aer_notice_type);
 		set_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events);
 		nvme_queue_scan(ctrl);
 		break;
 	case NVME_AER_NOTICE_FW_ACT_STARTING:
+		trace_nvme_async_event(ctrl, aer_notice_type);
 		queue_work(nvme_wq, &ctrl->fw_act_work);
 		break;
 #ifdef CONFIG_NVME_MULTIPATH
 	case NVME_AER_NOTICE_ANA:
+		trace_nvme_async_event(ctrl, aer_notice_type);
 		if (!ctrl->ana_log_buf)
 			break;
 		queue_work(nvme_wq, &ctrl->ana_work);
@@ -3435,11 +3442,12 @@ void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
 		volatile union nvme_result *res)
 {
 	u32 result = le32_to_cpu(res->u32);
+	u32 aer_type = result & 0x07;
 
 	if (le16_to_cpu(status) >> 1 != NVME_SC_SUCCESS)
 		return;
 
-	switch (result & 0x7) {
+	switch (aer_type) {
 	case NVME_AER_NOTICE:
 		nvme_handle_aen_notice(ctrl, result);
 		break;
@@ -3447,6 +3455,7 @@ void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
 	case NVME_AER_SMART:
 	case NVME_AER_CSS:
 	case NVME_AER_VS:
+		trace_nvme_async_event(ctrl, aer_type);
 		ctrl->aen_result = result;
 		break;
 	default:
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 206d63cb1afc..bd0969db6225 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -552,8 +552,11 @@ blk_status_t nvmf_fail_nonready_command(struct nvme_ctrl *ctrl,
 	    ctrl->state != NVME_CTRL_DEAD &&
 	    !blk_noretry_request(rq) && !(rq->cmd_flags & REQ_NVME_MPATH))
 		return BLK_STS_RESOURCE;
-	nvme_req(rq)->status = NVME_SC_ABORT_REQ;
-	return BLK_STS_IOERR;
+
+	nvme_req(rq)->status = NVME_SC_HOST_PATH_ERROR;
+	blk_mq_start_request(rq);
+	nvme_complete_rq(rq);
+	return BLK_STS_OK;
 }
 EXPORT_SYMBOL_GPL(nvmf_fail_nonready_command);
 
@@ -865,6 +868,36 @@ static int nvmf_check_required_opts(struct nvmf_ctrl_options *opts,
 	return 0;
 }
 
+bool nvmf_ip_options_match(struct nvme_ctrl *ctrl,
+		struct nvmf_ctrl_options *opts)
+{
+	if (!nvmf_ctlr_matches_baseopts(ctrl, opts) ||
+	    strcmp(opts->traddr, ctrl->opts->traddr) ||
+	    strcmp(opts->trsvcid, ctrl->opts->trsvcid))
+		return false;
+
+	/*
+	 * Checking the local address is rough. In most cases, none is specified
+	 * and the host port is selected by the stack.
+	 *
+	 * Assume no match if:
+	 * -  local address is specified and address is not the same
+	 * -  local address is not specified but remote is, or vice versa
+	 *    (admin using specific host_traddr when it matters).
+	 */
+	if ((opts->mask & NVMF_OPT_HOST_TRADDR) &&
+	    (ctrl->opts->mask & NVMF_OPT_HOST_TRADDR)) {
+		if (strcmp(opts->host_traddr, ctrl->opts->host_traddr))
+			return false;
+	} else if ((opts->mask & NVMF_OPT_HOST_TRADDR) ||
+		   (ctrl->opts->mask & NVMF_OPT_HOST_TRADDR)) {
+		return false;
+	}
+
+	return true;
+}
+EXPORT_SYMBOL_GPL(nvmf_ip_options_match);
+
 static int nvmf_check_allowed_opts(struct nvmf_ctrl_options *opts,
 		unsigned int allowed_opts)
 {
diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index aa2fdb2a2e8f..6ea6275f332a 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -166,6 +166,8 @@ blk_status_t nvmf_fail_nonready_command(struct nvme_ctrl *ctrl,
 		struct request *rq);
 bool __nvmf_check_ready(struct nvme_ctrl *ctrl, struct request *rq,
 		bool queue_live);
+bool nvmf_ip_options_match(struct nvme_ctrl *ctrl,
+		struct nvmf_ctrl_options *opts);
 
 static inline bool nvmf_check_ready(struct nvme_ctrl *ctrl, struct request *rq,
 		bool queue_live)
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 611e70cae754..e52b9d3c0bd6 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -20,6 +20,7 @@
 #include <uapi/scsi/fc/fc_fs.h>
 #include <uapi/scsi/fc/fc_els.h>
 #include <linux/delay.h>
+#include <linux/overflow.h>
 
 #include "nvme.h"
 #include "fabrics.h"
@@ -104,6 +105,12 @@ struct nvme_fc_fcp_op {
 	struct nvme_fc_ersp_iu	rsp_iu;
 };
 
+struct nvme_fcp_op_w_sgl {
+	struct nvme_fc_fcp_op	op;
+	struct scatterlist	sgl[SG_CHUNK_SIZE];
+	uint8_t			priv[0];
+};
+
 struct nvme_fc_lport {
 	struct nvme_fc_local_port	localport;
 
@@ -122,6 +129,7 @@ struct nvme_fc_rport {
 	struct list_head		endp_list; /* for lport->endp_list */
 	struct list_head		ctrl_list;
 	struct list_head		ls_req_list;
+	struct list_head		disc_list;
 	struct device			*dev;	/* physical device for dma */
 	struct nvme_fc_lport		*lport;
 	spinlock_t			lock;
@@ -210,7 +218,6 @@ static DEFINE_IDA(nvme_fc_ctrl_cnt);
  * These items are short-term. They will eventually be moved into
  * a generic FC class. See comments in module init.
  */
-static struct class *fc_class;
 static struct device *fc_udev_device;
 
 
@@ -317,7 +324,7 @@ out_done:
  * @template:  LLDD entrypoints and operational parameters for the port
  * @dev:       physical hardware device node port corresponds to. Will be
  *             used for DMA mappings
- * @lport_p:   pointer to a local port pointer. Upon success, the routine
+ * @portptr:   pointer to a local port pointer. Upon success, the routine
  *             will allocate a nvme_fc_local_port structure and place its
  *             address in the local port pointer. Upon failure, local port
  *             pointer will be set to 0.
@@ -425,8 +432,7 @@ EXPORT_SYMBOL_GPL(nvme_fc_register_localport);
  * nvme_fc_unregister_localport - transport entry point called by an
  *                              LLDD to deregister/remove a previously
  *                              registered a NVME host FC port.
- * @localport: pointer to the (registered) local port that is to be
- *             deregistered.
+ * @portptr: pointer to the (registered) local port that is to be deregistered.
  *
  * Returns:
  * a completion status. Must be 0 upon success; a negative errno
@@ -507,6 +513,7 @@ nvme_fc_free_rport(struct kref *ref)
 	list_del(&rport->endp_list);
 	spin_unlock_irqrestore(&nvme_fc_lock, flags);
 
+	WARN_ON(!list_empty(&rport->disc_list));
 	ida_simple_remove(&lport->endp_cnt, rport->remoteport.port_num);
 
 	kfree(rport);
@@ -631,7 +638,7 @@ __nvme_fc_set_dev_loss_tmo(struct nvme_fc_rport *rport,
  * @localport: pointer to the (registered) local port that the remote
  *             subsystem port is connected to.
  * @pinfo:     pointer to information about the port to be registered
- * @rport_p:   pointer to a remote port pointer. Upon success, the routine
+ * @portptr:   pointer to a remote port pointer. Upon success, the routine
  *             will allocate a nvme_fc_remote_port structure and place its
  *             address in the remote port pointer. Upon failure, remote port
  *             pointer will be set to 0.
@@ -694,6 +701,7 @@ nvme_fc_register_remoteport(struct nvme_fc_local_port *localport,
 	INIT_LIST_HEAD(&newrec->endp_list);
 	INIT_LIST_HEAD(&newrec->ctrl_list);
 	INIT_LIST_HEAD(&newrec->ls_req_list);
+	INIT_LIST_HEAD(&newrec->disc_list);
 	kref_init(&newrec->ref);
 	atomic_set(&newrec->act_ctrl_cnt, 0);
 	spin_lock_init(&newrec->lock);
@@ -807,8 +815,8 @@ nvme_fc_ctrl_connectivity_loss(struct nvme_fc_ctrl *ctrl)
  * nvme_fc_unregister_remoteport - transport entry point called by an
  *                              LLDD to deregister/remove a previously
  *                              registered a NVME subsystem FC port.
- * @remoteport: pointer to the (registered) remote port that is to be
- *              deregistered.
+ * @portptr: pointer to the (registered) remote port that is to be
+ *           deregistered.
  *
  * Returns:
  * a completion status. Must be 0 upon success; a negative errno
@@ -1385,7 +1393,7 @@ nvme_fc_disconnect_assoc_done(struct nvmefc_ls_req *lsreq, int status)
 
 	__nvme_fc_finish_ls_req(lsop);
 
-	/* fc-nvme iniator doesn't care about success or failure of cmd */
+	/* fc-nvme initiator doesn't care about success or failure of cmd */
 
 	kfree(lsop);
 }
@@ -1685,6 +1693,8 @@ __nvme_fc_init_request(struct nvme_fc_ctrl *ctrl,
 		struct nvme_fc_queue *queue, struct nvme_fc_fcp_op *op,
 		struct request *rq, u32 rqno)
 {
+	struct nvme_fcp_op_w_sgl *op_w_sgl =
+		container_of(op, typeof(*op_w_sgl), op);
 	struct nvme_fc_cmd_iu *cmdiu = &op->cmd_iu;
 	int ret = 0;
 
@@ -1694,7 +1704,6 @@ __nvme_fc_init_request(struct nvme_fc_ctrl *ctrl,
 	op->fcp_req.rspaddr = &op->rsp_iu;
 	op->fcp_req.rsplen = sizeof(op->rsp_iu);
 	op->fcp_req.done = nvme_fc_fcpio_done;
-	op->fcp_req.first_sgl = (struct scatterlist *)&op[1];
 	op->fcp_req.private = &op->fcp_req.first_sgl[SG_CHUNK_SIZE];
 	op->ctrl = ctrl;
 	op->queue = queue;
@@ -1733,12 +1742,17 @@ nvme_fc_init_request(struct blk_mq_tag_set *set, struct request *rq,
 		unsigned int hctx_idx, unsigned int numa_node)
 {
 	struct nvme_fc_ctrl *ctrl = set->driver_data;
-	struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
+	struct nvme_fcp_op_w_sgl *op = blk_mq_rq_to_pdu(rq);
 	int queue_idx = (set == &ctrl->tag_set) ? hctx_idx + 1 : 0;
 	struct nvme_fc_queue *queue = &ctrl->queues[queue_idx];
+	int res;
 
 	nvme_req(rq)->ctrl = &ctrl->ctrl;
-	return __nvme_fc_init_request(ctrl, queue, op, rq, queue->rqcnt++);
+	res = __nvme_fc_init_request(ctrl, queue, &op->op, rq, queue->rqcnt++);
+	if (res)
+		return res;
+	op->op.fcp_req.first_sgl = &op->sgl[0];
+	return res;
 }
 
 static int
@@ -1768,7 +1782,6 @@ nvme_fc_init_aen_ops(struct nvme_fc_ctrl *ctrl)
 		}
 
 		aen_op->flags = FCOP_FLAGS_AEN;
-		aen_op->fcp_req.first_sgl = NULL; /* no sg list */
 		aen_op->fcp_req.private = private;
 
 		memset(sqe, 0, sizeof(*sqe));
@@ -2422,10 +2435,9 @@ nvme_fc_create_io_queues(struct nvme_fc_ctrl *ctrl)
 	ctrl->tag_set.reserved_tags = 1; /* fabric connect */
 	ctrl->tag_set.numa_node = NUMA_NO_NODE;
 	ctrl->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
-	ctrl->tag_set.cmd_size = sizeof(struct nvme_fc_fcp_op) +
-					(SG_CHUNK_SIZE *
-						sizeof(struct scatterlist)) +
-					ctrl->lport->ops->fcprqst_priv_sz;
+	ctrl->tag_set.cmd_size =
+		struct_size((struct nvme_fcp_op_w_sgl *)NULL, priv,
+			    ctrl->lport->ops->fcprqst_priv_sz);
 	ctrl->tag_set.driver_data = ctrl;
 	ctrl->tag_set.nr_hw_queues = ctrl->ctrl.queue_count - 1;
 	ctrl->tag_set.timeout = NVME_IO_TIMEOUT;
@@ -3027,10 +3039,9 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
 	ctrl->admin_tag_set.queue_depth = NVME_AQ_MQ_TAG_DEPTH;
 	ctrl->admin_tag_set.reserved_tags = 2; /* fabric connect + Keep-Alive */
 	ctrl->admin_tag_set.numa_node = NUMA_NO_NODE;
-	ctrl->admin_tag_set.cmd_size = sizeof(struct nvme_fc_fcp_op) +
-					(SG_CHUNK_SIZE *
-						sizeof(struct scatterlist)) +
-					ctrl->lport->ops->fcprqst_priv_sz;
+	ctrl->admin_tag_set.cmd_size =
+		struct_size((struct nvme_fcp_op_w_sgl *)NULL, priv,
+			    ctrl->lport->ops->fcprqst_priv_sz);
 	ctrl->admin_tag_set.driver_data = ctrl;
 	ctrl->admin_tag_set.nr_hw_queues = 1;
 	ctrl->admin_tag_set.timeout = ADMIN_TIMEOUT;
@@ -3159,7 +3170,7 @@ nvme_fc_parse_traddr(struct nvmet_fc_traddr *traddr, char *buf, size_t blen)
 	substring_t wwn = { name, &name[sizeof(name)-1] };
 	int nnoffset, pnoffset;
 
-	/* validate it string one of the 2 allowed formats */
+	/* validate if string is one of the 2 allowed formats */
 	if (strnlen(buf, blen) == NVME_FC_TRADDR_MAXLENGTH &&
 			!strncmp(buf, "nn-0x", NVME_FC_TRADDR_OXNNLEN) &&
 			!strncmp(&buf[NVME_FC_TRADDR_MAX_PN_OFFSET],
@@ -3254,6 +3265,90 @@ static struct nvmf_transport_ops nvme_fc_transport = {
 	.create_ctrl	= nvme_fc_create_ctrl,
 };
 
+/* Arbitrary successive failures max. With lots of subsystems could be high */
+#define DISCOVERY_MAX_FAIL	20
+
+static ssize_t nvme_fc_nvme_discovery_store(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	unsigned long flags;
+	LIST_HEAD(local_disc_list);
+	struct nvme_fc_lport *lport;
+	struct nvme_fc_rport *rport;
+	int failcnt = 0;
+
+	spin_lock_irqsave(&nvme_fc_lock, flags);
+restart:
+	list_for_each_entry(lport, &nvme_fc_lport_list, port_list) {
+		list_for_each_entry(rport, &lport->endp_list, endp_list) {
+			if (!nvme_fc_lport_get(lport))
+				continue;
+			if (!nvme_fc_rport_get(rport)) {
+				/*
+				 * This is a temporary condition. Upon restart
+				 * this rport will be gone from the list.
+				 *
+				 * Revert the lport put and retry.  Anything
+				 * added to the list already will be skipped (as
+				 * they are no longer list_empty).  Loops should
+				 * resume at rports that were not yet seen.
+				 */
+				nvme_fc_lport_put(lport);
+
+				if (failcnt++ < DISCOVERY_MAX_FAIL)
+					goto restart;
+
+				pr_err("nvme_discovery: too many reference "
+				       "failures\n");
+				goto process_local_list;
+			}
+			if (list_empty(&rport->disc_list))
+				list_add_tail(&rport->disc_list,
+					      &local_disc_list);
+		}
+	}
+
+process_local_list:
+	while (!list_empty(&local_disc_list)) {
+		rport = list_first_entry(&local_disc_list,
+					 struct nvme_fc_rport, disc_list);
+		list_del_init(&rport->disc_list);
+		spin_unlock_irqrestore(&nvme_fc_lock, flags);
+
+		lport = rport->lport;
+		/* signal discovery. Won't hurt if it repeats */
+		nvme_fc_signal_discovery_scan(lport, rport);
+		nvme_fc_rport_put(rport);
+		nvme_fc_lport_put(lport);
+
+		spin_lock_irqsave(&nvme_fc_lock, flags);
+	}
+	spin_unlock_irqrestore(&nvme_fc_lock, flags);
+
+	return count;
+}
+static DEVICE_ATTR(nvme_discovery, 0200, NULL, nvme_fc_nvme_discovery_store);
+
+static struct attribute *nvme_fc_attrs[] = {
+	&dev_attr_nvme_discovery.attr,
+	NULL
+};
+
+static struct attribute_group nvme_fc_attr_group = {
+	.attrs = nvme_fc_attrs,
+};
+
+static const struct attribute_group *nvme_fc_attr_groups[] = {
+	&nvme_fc_attr_group,
+	NULL
+};
+
+static struct class fc_class = {
+	.name = "fc",
+	.dev_groups = nvme_fc_attr_groups,
+	.owner = THIS_MODULE,
+};
+
 static int __init nvme_fc_init_module(void)
 {
 	int ret;
@@ -3272,16 +3367,16 @@ static int __init nvme_fc_init_module(void)
 	 * put in place, this code will move to a more generic
 	 * location for the class.
 	 */
-	fc_class = class_create(THIS_MODULE, "fc");
-	if (IS_ERR(fc_class)) {
+	ret = class_register(&fc_class);
+	if (ret) {
 		pr_err("couldn't register class fc\n");
-		return PTR_ERR(fc_class);
+		return ret;
 	}
 
 	/*
 	 * Create a device for the FC-centric udev events
 	 */
-	fc_udev_device = device_create(fc_class, NULL, MKDEV(0, 0), NULL,
+	fc_udev_device = device_create(&fc_class, NULL, MKDEV(0, 0), NULL,
 				"fc_udev_device");
 	if (IS_ERR(fc_udev_device)) {
 		pr_err("couldn't create fc_udev device!\n");
@@ -3296,9 +3391,9 @@ static int __init nvme_fc_init_module(void)
 	return 0;
 
 out_destroy_device:
-	device_destroy(fc_class, MKDEV(0, 0));
+	device_destroy(&fc_class, MKDEV(0, 0));
 out_destroy_class:
-	class_destroy(fc_class);
+	class_unregister(&fc_class);
 	return ret;
 }
 
@@ -3313,8 +3408,8 @@ static void __exit nvme_fc_exit_module(void)
 	ida_destroy(&nvme_fc_local_port_cnt);
 	ida_destroy(&nvme_fc_ctrl_cnt);
 
-	device_destroy(fc_class, MKDEV(0, 0));
-	class_destroy(fc_class);
+	device_destroy(&fc_class, MKDEV(0, 0));
+	class_unregister(&fc_class);
 }
 
 module_init(nvme_fc_init_module);
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 6fe5923c95d4..a4f3b263cd6c 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -567,13 +567,13 @@ static int nvme_nvm_set_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr *ppas,
  * Expect the lba in device format
  */
 static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev,
-				 struct nvm_chk_meta *meta,
-				 sector_t slba, int nchks)
+				 sector_t slba, int nchks,
+				 struct nvm_chk_meta *meta)
 {
 	struct nvm_geo *geo = &ndev->geo;
 	struct nvme_ns *ns = ndev->q->queuedata;
 	struct nvme_ctrl *ctrl = ns->ctrl;
-	struct nvme_nvm_chk_meta *dev_meta = (struct nvme_nvm_chk_meta *)meta;
+	struct nvme_nvm_chk_meta *dev_meta, *dev_meta_off;
 	struct ppa_addr ppa;
 	size_t left = nchks * sizeof(struct nvme_nvm_chk_meta);
 	size_t log_pos, offset, len;
@@ -585,6 +585,10 @@ static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev,
 	 */
 	max_len = min_t(unsigned int, ctrl->max_hw_sectors << 9, 256 * 1024);
 
+	dev_meta = kmalloc(max_len, GFP_KERNEL);
+	if (!dev_meta)
+		return -ENOMEM;
+
 	/* Normalize lba address space to obtain log offset */
 	ppa.ppa = slba;
 	ppa = dev_to_generic_addr(ndev, ppa);
@@ -598,6 +602,9 @@ static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev,
 	while (left) {
 		len = min_t(unsigned int, left, max_len);
 
+		memset(dev_meta, 0, max_len);
+		dev_meta_off = dev_meta;
+
 		ret = nvme_get_log(ctrl, ns->head->ns_id,
 				NVME_NVM_LOG_REPORT_CHUNK, 0, dev_meta, len,
 				offset);
@@ -607,21 +614,23 @@ static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev,
 		}
 
 		for (i = 0; i < len; i += sizeof(struct nvme_nvm_chk_meta)) {
-			meta->state = dev_meta->state;
-			meta->type = dev_meta->type;
-			meta->wi = dev_meta->wi;
-			meta->slba = le64_to_cpu(dev_meta->slba);
-			meta->cnlb = le64_to_cpu(dev_meta->cnlb);
-			meta->wp = le64_to_cpu(dev_meta->wp);
+			meta->state = dev_meta_off->state;
+			meta->type = dev_meta_off->type;
+			meta->wi = dev_meta_off->wi;
+			meta->slba = le64_to_cpu(dev_meta_off->slba);
+			meta->cnlb = le64_to_cpu(dev_meta_off->cnlb);
+			meta->wp = le64_to_cpu(dev_meta_off->wp);
 
 			meta++;
-			dev_meta++;
+			dev_meta_off++;
 		}
 
 		offset += len;
 		left -= len;
 	}
 
+	kfree(dev_meta);
+
 	return ret;
 }
 
@@ -968,6 +977,9 @@ void nvme_nvm_update_nvm_info(struct nvme_ns *ns)
 	struct nvm_dev *ndev = ns->ndev;
 	struct nvm_geo *geo = &ndev->geo;
 
+	if (geo->version == NVM_OCSSD_SPEC_12)
+		return;
+
 	geo->csecs = 1 << ns->lba_shift;
 	geo->sos = ns->ms;
 }
@@ -1190,10 +1202,29 @@ static NVM_DEV_ATTR_12_RO(multiplane_modes);
 static NVM_DEV_ATTR_12_RO(media_capabilities);
 static NVM_DEV_ATTR_12_RO(max_phys_secs);
 
-static struct attribute *nvm_dev_attrs_12[] = {
+/* 2.0 values */
+static NVM_DEV_ATTR_20_RO(groups);
+static NVM_DEV_ATTR_20_RO(punits);
+static NVM_DEV_ATTR_20_RO(chunks);
+static NVM_DEV_ATTR_20_RO(clba);
+static NVM_DEV_ATTR_20_RO(ws_min);
+static NVM_DEV_ATTR_20_RO(ws_opt);
+static NVM_DEV_ATTR_20_RO(maxoc);
+static NVM_DEV_ATTR_20_RO(maxocpu);
+static NVM_DEV_ATTR_20_RO(mw_cunits);
+static NVM_DEV_ATTR_20_RO(write_typ);
+static NVM_DEV_ATTR_20_RO(write_max);
+static NVM_DEV_ATTR_20_RO(reset_typ);
+static NVM_DEV_ATTR_20_RO(reset_max);
+
+static struct attribute *nvm_dev_attrs[] = {
+	/* version agnostic attrs */
 	&dev_attr_version.attr,
 	&dev_attr_capabilities.attr,
+	&dev_attr_read_typ.attr,
+	&dev_attr_read_max.attr,
 
+	/* 1.2 attrs */
 	&dev_attr_vendor_opcode.attr,
 	&dev_attr_device_mode.attr,
 	&dev_attr_media_manager.attr,
@@ -1208,8 +1239,6 @@ static struct attribute *nvm_dev_attrs_12[] = {
 	&dev_attr_page_size.attr,
 	&dev_attr_hw_sector_size.attr,
 	&dev_attr_oob_sector_size.attr,
-	&dev_attr_read_typ.attr,
-	&dev_attr_read_max.attr,
 	&dev_attr_prog_typ.attr,
 	&dev_attr_prog_max.attr,
 	&dev_attr_erase_typ.attr,
@@ -1218,33 +1247,7 @@ static struct attribute *nvm_dev_attrs_12[] = {
 	&dev_attr_media_capabilities.attr,
 	&dev_attr_max_phys_secs.attr,
 
-	NULL,
-};
-
-static const struct attribute_group nvm_dev_attr_group_12 = {
-	.name		= "lightnvm",
-	.attrs		= nvm_dev_attrs_12,
-};
-
-/* 2.0 values */
-static NVM_DEV_ATTR_20_RO(groups);
-static NVM_DEV_ATTR_20_RO(punits);
-static NVM_DEV_ATTR_20_RO(chunks);
-static NVM_DEV_ATTR_20_RO(clba);
-static NVM_DEV_ATTR_20_RO(ws_min);
-static NVM_DEV_ATTR_20_RO(ws_opt);
-static NVM_DEV_ATTR_20_RO(maxoc);
-static NVM_DEV_ATTR_20_RO(maxocpu);
-static NVM_DEV_ATTR_20_RO(mw_cunits);
-static NVM_DEV_ATTR_20_RO(write_typ);
-static NVM_DEV_ATTR_20_RO(write_max);
-static NVM_DEV_ATTR_20_RO(reset_typ);
-static NVM_DEV_ATTR_20_RO(reset_max);
-
-static struct attribute *nvm_dev_attrs_20[] = {
-	&dev_attr_version.attr,
-	&dev_attr_capabilities.attr,
-
+	/* 2.0 attrs */
 	&dev_attr_groups.attr,
 	&dev_attr_punits.attr,
 	&dev_attr_chunks.attr,
@@ -1255,8 +1258,6 @@ static struct attribute *nvm_dev_attrs_20[] = {
 	&dev_attr_maxocpu.attr,
 	&dev_attr_mw_cunits.attr,
 
-	&dev_attr_read_typ.attr,
-	&dev_attr_read_max.attr,
 	&dev_attr_write_typ.attr,
 	&dev_attr_write_max.attr,
 	&dev_attr_reset_typ.attr,
@@ -1265,44 +1266,38 @@ static struct attribute *nvm_dev_attrs_20[] = {
 	NULL,
 };
 
-static const struct attribute_group nvm_dev_attr_group_20 = {
-	.name		= "lightnvm",
-	.attrs		= nvm_dev_attrs_20,
-};
-
-int nvme_nvm_register_sysfs(struct nvme_ns *ns)
+static umode_t nvm_dev_attrs_visible(struct kobject *kobj,
+				     struct attribute *attr, int index)
 {
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct gendisk *disk = dev_to_disk(dev);
+	struct nvme_ns *ns = disk->private_data;
 	struct nvm_dev *ndev = ns->ndev;
-	struct nvm_geo *geo = &ndev->geo;
+	struct device_attribute *dev_attr =
+		container_of(attr, typeof(*dev_attr), attr);
 
 	if (!ndev)
-		return -EINVAL;
-
-	switch (geo->major_ver_id) {
-	case 1:
-		return sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
-					&nvm_dev_attr_group_12);
-	case 2:
-		return sysfs_create_group(&disk_to_dev(ns->disk)->kobj,
-					&nvm_dev_attr_group_20);
-	}
+		return 0;
 
-	return -EINVAL;
-}
+	if (dev_attr->show == nvm_dev_attr_show)
+		return attr->mode;
 
-void nvme_nvm_unregister_sysfs(struct nvme_ns *ns)
-{
-	struct nvm_dev *ndev = ns->ndev;
-	struct nvm_geo *geo = &ndev->geo;
-
-	switch (geo->major_ver_id) {
+	switch (ndev->geo.major_ver_id) {
 	case 1:
-		sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
-					&nvm_dev_attr_group_12);
+		if (dev_attr->show == nvm_dev_attr_show_12)
+			return attr->mode;
 		break;
 	case 2:
-		sysfs_remove_group(&disk_to_dev(ns->disk)->kobj,
-					&nvm_dev_attr_group_20);
+		if (dev_attr->show == nvm_dev_attr_show_20)
+			return attr->mode;
 		break;
 	}
+
+	return 0;
 }
+
+const struct attribute_group nvme_nvm_attr_group = {
+	.name		= "lightnvm",
+	.attrs		= nvm_dev_attrs,
+	.is_visible	= nvm_dev_attrs_visible,
+};
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 9fe3fff818b8..5e3cc8c59a39 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -77,6 +77,13 @@ void nvme_failover_req(struct request *req)
 			queue_work(nvme_wq, &ns->ctrl->ana_work);
 		}
 		break;
+	case NVME_SC_HOST_PATH_ERROR:
+		/*
+		 * Temporary transport disruption in talking to the controller.
+		 * Try to send on a new path.
+		 */
+		nvme_mpath_clear_current_path(ns);
+		break;
 	default:
 		/*
 		 * Reset the controller for any non-ANA error as we don't know
@@ -110,29 +117,55 @@ static const char *nvme_ana_state_names[] = {
 	[NVME_ANA_CHANGE]		= "change",
 };
 
-static struct nvme_ns *__nvme_find_path(struct nvme_ns_head *head)
+void nvme_mpath_clear_current_path(struct nvme_ns *ns)
+{
+	struct nvme_ns_head *head = ns->head;
+	int node;
+
+	if (!head)
+		return;
+
+	for_each_node(node) {
+		if (ns == rcu_access_pointer(head->current_path[node]))
+			rcu_assign_pointer(head->current_path[node], NULL);
+	}
+}
+
+static struct nvme_ns *__nvme_find_path(struct nvme_ns_head *head, int node)
 {
-	struct nvme_ns *ns, *fallback = NULL;
+	int found_distance = INT_MAX, fallback_distance = INT_MAX, distance;
+	struct nvme_ns *found = NULL, *fallback = NULL, *ns;
 
 	list_for_each_entry_rcu(ns, &head->list, siblings) {
 		if (ns->ctrl->state != NVME_CTRL_LIVE ||
 		    test_bit(NVME_NS_ANA_PENDING, &ns->flags))
 			continue;
+
+		distance = node_distance(node, dev_to_node(ns->ctrl->dev));
+
 		switch (ns->ana_state) {
 		case NVME_ANA_OPTIMIZED:
-			rcu_assign_pointer(head->current_path, ns);
-			return ns;
+			if (distance < found_distance) {
+				found_distance = distance;
+				found = ns;
+			}
+			break;
 		case NVME_ANA_NONOPTIMIZED:
-			fallback = ns;
+			if (distance < fallback_distance) {
+				fallback_distance = distance;
+				fallback = ns;
+			}
 			break;
 		default:
 			break;
 		}
 	}
 
-	if (fallback)
-		rcu_assign_pointer(head->current_path, fallback);
-	return fallback;
+	if (!found)
+		found = fallback;
+	if (found)
+		rcu_assign_pointer(head->current_path[node], found);
+	return found;
 }
 
 static inline bool nvme_path_is_optimized(struct nvme_ns *ns)
@@ -143,10 +176,12 @@ static inline bool nvme_path_is_optimized(struct nvme_ns *ns)
 
 inline struct nvme_ns *nvme_find_path(struct nvme_ns_head *head)
 {
-	struct nvme_ns *ns = srcu_dereference(head->current_path, &head->srcu);
+	int node = numa_node_id();
+	struct nvme_ns *ns;
 
+	ns = srcu_dereference(head->current_path[node], &head->srcu);
 	if (unlikely(!ns || !nvme_path_is_optimized(ns)))
-		ns = __nvme_find_path(head);
+		ns = __nvme_find_path(head, node);
 	return ns;
 }
 
@@ -193,7 +228,7 @@ static bool nvme_ns_head_poll(struct request_queue *q, blk_qc_t qc)
 	int srcu_idx;
 
 	srcu_idx = srcu_read_lock(&head->srcu);
-	ns = srcu_dereference(head->current_path, &head->srcu);
+	ns = srcu_dereference(head->current_path[numa_node_id()], &head->srcu);
 	if (likely(ns && nvme_path_is_optimized(ns)))
 		found = ns->queue->poll_fn(q, qc);
 	srcu_read_unlock(&head->srcu, srcu_idx);
@@ -282,12 +317,17 @@ static void nvme_mpath_set_live(struct nvme_ns *ns)
 	if (!head->disk)
 		return;
 
-	if (!(head->disk->flags & GENHD_FL_UP)) {
-		device_add_disk(&head->subsys->dev, head->disk);
-		if (sysfs_create_group(&disk_to_dev(head->disk)->kobj,
-				&nvme_ns_id_attr_group))
-			dev_warn(&head->subsys->dev,
-				 "failed to create id group.\n");
+	if (!(head->disk->flags & GENHD_FL_UP))
+		device_add_disk(&head->subsys->dev, head->disk,
+				nvme_ns_id_attr_groups);
+
+	if (nvme_path_is_optimized(ns)) {
+		int node, srcu_idx;
+
+		srcu_idx = srcu_read_lock(&head->srcu);
+		for_each_node(node)
+			__nvme_find_path(head, node);
+		srcu_read_unlock(&head->srcu, srcu_idx);
 	}
 
 	kblockd_schedule_work(&ns->head->requeue_work);
@@ -494,11 +534,8 @@ void nvme_mpath_remove_disk(struct nvme_ns_head *head)
 {
 	if (!head->disk)
 		return;
-	if (head->disk->flags & GENHD_FL_UP) {
-		sysfs_remove_group(&disk_to_dev(head->disk)->kobj,
-				   &nvme_ns_id_attr_group);
+	if (head->disk->flags & GENHD_FL_UP)
 		del_gendisk(head->disk);
-	}
 	blk_set_queue_dying(head->disk->queue);
 	/* make sure all pending bios are cleaned up */
 	kblockd_schedule_work(&head->requeue_work);
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index bb4a2003c097..9fefba039d1e 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -277,14 +277,6 @@ struct nvme_ns_ids {
  * only ever has a single entry for private namespaces.
  */
 struct nvme_ns_head {
-#ifdef CONFIG_NVME_MULTIPATH
-	struct gendisk		*disk;
-	struct nvme_ns __rcu	*current_path;
-	struct bio_list		requeue_list;
-	spinlock_t		requeue_lock;
-	struct work_struct	requeue_work;
-	struct mutex		lock;
-#endif
 	struct list_head	list;
 	struct srcu_struct      srcu;
 	struct nvme_subsystem	*subsys;
@@ -293,6 +285,14 @@ struct nvme_ns_head {
 	struct list_head	entry;
 	struct kref		ref;
 	int			instance;
+#ifdef CONFIG_NVME_MULTIPATH
+	struct gendisk		*disk;
+	struct bio_list		requeue_list;
+	spinlock_t		requeue_lock;
+	struct work_struct	requeue_work;
+	struct mutex		lock;
+	struct nvme_ns __rcu	*current_path[];
+#endif
 };
 
 #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
@@ -459,7 +459,7 @@ int nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl);
 int nvme_get_log(struct nvme_ctrl *ctrl, u32 nsid, u8 log_page, u8 lsp,
 		void *log, size_t size, u64 offset);
 
-extern const struct attribute_group nvme_ns_id_attr_group;
+extern const struct attribute_group *nvme_ns_id_attr_groups[];
 extern const struct block_device_operations nvme_ns_head_ops;
 
 #ifdef CONFIG_NVME_MULTIPATH
@@ -474,14 +474,7 @@ void nvme_mpath_remove_disk(struct nvme_ns_head *head);
 int nvme_mpath_init(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id);
 void nvme_mpath_uninit(struct nvme_ctrl *ctrl);
 void nvme_mpath_stop(struct nvme_ctrl *ctrl);
-
-static inline void nvme_mpath_clear_current_path(struct nvme_ns *ns)
-{
-	struct nvme_ns_head *head = ns->head;
-
-	if (head && ns == rcu_access_pointer(head->current_path))
-		rcu_assign_pointer(head->current_path, NULL);
-}
+void nvme_mpath_clear_current_path(struct nvme_ns *ns);
 struct nvme_ns *nvme_find_path(struct nvme_ns_head *head);
 
 static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
@@ -551,8 +544,7 @@ static inline void nvme_mpath_stop(struct nvme_ctrl *ctrl)
 void nvme_nvm_update_nvm_info(struct nvme_ns *ns);
 int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node);
 void nvme_nvm_unregister(struct nvme_ns *ns);
-int nvme_nvm_register_sysfs(struct nvme_ns *ns);
-void nvme_nvm_unregister_sysfs(struct nvme_ns *ns);
+extern const struct attribute_group nvme_nvm_attr_group;
 int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, unsigned long arg);
 #else
 static inline void nvme_nvm_update_nvm_info(struct nvme_ns *ns) {};
@@ -563,11 +555,6 @@ static inline int nvme_nvm_register(struct nvme_ns *ns, char *disk_name,
 }
 
 static inline void nvme_nvm_unregister(struct nvme_ns *ns) {};
-static inline int nvme_nvm_register_sysfs(struct nvme_ns *ns)
-{
-	return 0;
-}
-static inline void nvme_nvm_unregister_sysfs(struct nvme_ns *ns) {};
 static inline int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd,
 							unsigned long arg)
 {
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index d668682f91df..4e023cd007e1 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -772,10 +772,10 @@ static blk_status_t nvme_map_data(struct nvme_dev *dev, struct request *req,
 
 		if (!dma_map_sg(dev->dev, &iod->meta_sg, 1, dma_dir))
 			goto out_unmap;
-	}
 
-	if (blk_integrity_rq(req))
 		cmnd->rw.metadata = cpu_to_le64(sg_dma_address(&iod->meta_sg));
+	}
+
 	return BLK_STS_OK;
 
 out_unmap:
@@ -1249,7 +1249,7 @@ static void nvme_free_queues(struct nvme_dev *dev, int lowest)
 
 /**
  * nvme_suspend_queue - put queue into suspended state
- * @nvmeq - queue to suspend
+ * @nvmeq: queue to suspend
  */
 static int nvme_suspend_queue(struct nvme_queue *nvmeq)
 {
@@ -2564,13 +2564,12 @@ static void nvme_remove(struct pci_dev *pdev)
 	struct nvme_dev *dev = pci_get_drvdata(pdev);
 
 	nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_DELETING);
-
-	cancel_work_sync(&dev->ctrl.reset_work);
 	pci_set_drvdata(pdev, NULL);
 
 	if (!pci_device_is_present(pdev)) {
 		nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_DEAD);
 		nvme_dev_disable(dev, true);
+		nvme_dev_remove_admin(dev);
 	}
 
 	flush_work(&dev->ctrl.reset_work);
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index dc042017c293..d181cafedc58 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -233,8 +233,15 @@ static void nvme_rdma_qp_event(struct ib_event *event, void *context)
 
 static int nvme_rdma_wait_for_cm(struct nvme_rdma_queue *queue)
 {
-	wait_for_completion_interruptible_timeout(&queue->cm_done,
+	int ret;
+
+	ret = wait_for_completion_interruptible_timeout(&queue->cm_done,
 			msecs_to_jiffies(NVME_RDMA_CONNECT_TIMEOUT_MS) + 1);
+	if (ret < 0)
+		return ret;
+	if (ret == 0)
+		return -ETIMEDOUT;
+	WARN_ON_ONCE(queue->cm_error > 0);
 	return queue->cm_error;
 }
 
@@ -1849,54 +1856,6 @@ static const struct nvme_ctrl_ops nvme_rdma_ctrl_ops = {
 	.stop_ctrl		= nvme_rdma_stop_ctrl,
 };
 
-static inline bool
-__nvme_rdma_options_match(struct nvme_rdma_ctrl *ctrl,
-	struct nvmf_ctrl_options *opts)
-{
-	char *stdport = __stringify(NVME_RDMA_IP_PORT);
-
-
-	if (!nvmf_ctlr_matches_baseopts(&ctrl->ctrl, opts) ||
-	    strcmp(opts->traddr, ctrl->ctrl.opts->traddr))
-		return false;
-
-	if (opts->mask & NVMF_OPT_TRSVCID &&
-	    ctrl->ctrl.opts->mask & NVMF_OPT_TRSVCID) {
-		if (strcmp(opts->trsvcid, ctrl->ctrl.opts->trsvcid))
-			return false;
-	} else if (opts->mask & NVMF_OPT_TRSVCID) {
-		if (strcmp(opts->trsvcid, stdport))
-			return false;
-	} else if (ctrl->ctrl.opts->mask & NVMF_OPT_TRSVCID) {
-		if (strcmp(stdport, ctrl->ctrl.opts->trsvcid))
-			return false;
-	}
-	/* else, it's a match as both have stdport. Fall to next checks */
-
-	/*
-	 * checking the local address is rough. In most cases, one
-	 * is not specified and the host port is selected by the stack.
-	 *
-	 * Assume no match if:
-	 *  local address is specified and address is not the same
-	 *  local address is not specified but remote is, or vice versa
-	 *    (admin using specific host_traddr when it matters).
-	 */
-	if (opts->mask & NVMF_OPT_HOST_TRADDR &&
-	    ctrl->ctrl.opts->mask & NVMF_OPT_HOST_TRADDR) {
-		if (strcmp(opts->host_traddr, ctrl->ctrl.opts->host_traddr))
-			return false;
-	} else if (opts->mask & NVMF_OPT_HOST_TRADDR ||
-		   ctrl->ctrl.opts->mask & NVMF_OPT_HOST_TRADDR)
-		return false;
-	/*
-	 * if neither controller had an host port specified, assume it's
-	 * a match as everything else matched.
-	 */
-
-	return true;
-}
-
 /*
  * Fails a connection request if it matches an existing controller
  * (association) with the same tuple:
@@ -1917,7 +1876,7 @@ nvme_rdma_existing_controller(struct nvmf_ctrl_options *opts)
 
 	mutex_lock(&nvme_rdma_ctrl_mutex);
 	list_for_each_entry(ctrl, &nvme_rdma_ctrl_list, list) {
-		found = __nvme_rdma_options_match(ctrl, opts);
+		found = nvmf_ip_options_match(&ctrl->ctrl, opts);
 		if (found)
 			break;
 	}
@@ -1932,7 +1891,6 @@ static struct nvme_ctrl *nvme_rdma_create_ctrl(struct device *dev,
 	struct nvme_rdma_ctrl *ctrl;
 	int ret;
 	bool changed;
-	char *port;
 
 	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
 	if (!ctrl)
@@ -1940,15 +1898,21 @@ static struct nvme_ctrl *nvme_rdma_create_ctrl(struct device *dev,
 	ctrl->ctrl.opts = opts;
 	INIT_LIST_HEAD(&ctrl->list);
 
-	if (opts->mask & NVMF_OPT_TRSVCID)
-		port = opts->trsvcid;
-	else
-		port = __stringify(NVME_RDMA_IP_PORT);
+	if (!(opts->mask & NVMF_OPT_TRSVCID)) {
+		opts->trsvcid =
+			kstrdup(__stringify(NVME_RDMA_IP_PORT), GFP_KERNEL);
+		if (!opts->trsvcid) {
+			ret = -ENOMEM;
+			goto out_free_ctrl;
+		}
+		opts->mask |= NVMF_OPT_TRSVCID;
+	}
 
 	ret = inet_pton_with_scope(&init_net, AF_UNSPEC,
-			opts->traddr, port, &ctrl->addr);
+			opts->traddr, opts->trsvcid, &ctrl->addr);
 	if (ret) {
-		pr_err("malformed address passed: %s:%s\n", opts->traddr, port);
+		pr_err("malformed address passed: %s:%s\n",
+			opts->traddr, opts->trsvcid);
 		goto out_free_ctrl;
 	}
 
diff --git a/drivers/nvme/host/trace.h b/drivers/nvme/host/trace.h
index a490790d6691..196d5bd56718 100644
--- a/drivers/nvme/host/trace.h
+++ b/drivers/nvme/host/trace.h
@@ -156,6 +156,34 @@ TRACE_EVENT(nvme_complete_rq,
 
 );
 
+#define aer_name(aer) { aer, #aer }
+
+TRACE_EVENT(nvme_async_event,
+	TP_PROTO(struct nvme_ctrl *ctrl, u32 result),
+	TP_ARGS(ctrl, result),
+	TP_STRUCT__entry(
+		__field(int, ctrl_id)
+		__field(u32, result)
+	),
+	TP_fast_assign(
+		__entry->ctrl_id = ctrl->instance;
+		__entry->result = result;
+	),
+	TP_printk("nvme%d: NVME_AEN=%#08x [%s]",
+		__entry->ctrl_id, __entry->result,
+		__print_symbolic(__entry->result,
+		aer_name(NVME_AER_NOTICE_NS_CHANGED),
+		aer_name(NVME_AER_NOTICE_ANA),
+		aer_name(NVME_AER_NOTICE_FW_ACT_STARTING),
+		aer_name(NVME_AER_ERROR),
+		aer_name(NVME_AER_SMART),
+		aer_name(NVME_AER_CSS),
+		aer_name(NVME_AER_VS))
+	)
+);
+
+#undef aer_name
+
 #endif /* _TRACE_NVME_H */
 
 #undef TRACE_INCLUDE_PATH
diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c
index 2008fa62a373..1179f6314323 100644
--- a/drivers/nvme/target/admin-cmd.c
+++ b/drivers/nvme/target/admin-cmd.c
@@ -58,7 +58,7 @@ static u16 nvmet_get_smart_log_nsid(struct nvmet_req *req,
 
 	ns = nvmet_find_namespace(req->sq->ctrl, req->cmd->get_log_page.nsid);
 	if (!ns) {
-		pr_err("nvmet : Could not find namespace id : %d\n",
+		pr_err("Could not find namespace id : %d\n",
 				le32_to_cpu(req->cmd->get_log_page.nsid));
 		return NVME_SC_INVALID_NS;
 	}
@@ -353,7 +353,7 @@ static void nvmet_execute_identify_ctrl(struct nvmet_req *req)
 	if (req->port->inline_data_size)
 		id->sgls |= cpu_to_le32(1 << 20);
 
-	strcpy(id->subnqn, ctrl->subsys->subsysnqn);
+	strlcpy(id->subnqn, ctrl->subsys->subsysnqn, sizeof(id->subnqn));
 
 	/* Max command capsule size is sqe + single page of in-capsule data */
 	id->ioccsz = cpu_to_le32((sizeof(struct nvme_command) +
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index b5ec96abd048..0acdff9e6842 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -1105,8 +1105,7 @@ static struct nvmet_subsys *nvmet_find_get_subsys(struct nvmet_port *port,
 	if (!port)
 		return NULL;
 
-	if (!strncmp(NVME_DISC_SUBSYS_NAME, subsysnqn,
-			NVMF_NQN_SIZE)) {
+	if (!strcmp(NVME_DISC_SUBSYS_NAME, subsysnqn)) {
 		if (!kref_get_unless_zero(&nvmet_disc_subsys->ref))
 			return NULL;
 		return nvmet_disc_subsys;
diff --git a/drivers/nvme/target/discovery.c b/drivers/nvme/target/discovery.c
index eae29f493a07..bc0aa0bf1543 100644
--- a/drivers/nvme/target/discovery.c
+++ b/drivers/nvme/target/discovery.c
@@ -174,7 +174,7 @@ static void nvmet_execute_identify_disc_ctrl(struct nvmet_req *req)
 	if (req->port->inline_data_size)
 		id->sgls |= cpu_to_le32(1 << 20);
 
-	strcpy(id->subnqn, ctrl->subsys->subsysnqn);
+	strlcpy(id->subnqn, ctrl->subsys->subsysnqn, sizeof(id->subnqn));
 
 	status = nvmet_copy_to_sgl(req, 0, id, sizeof(*id));
 
@@ -219,12 +219,10 @@ u16 nvmet_parse_discovery_cmd(struct nvmet_req *req)
 			return NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
 		}
 	default:
-		pr_err("unsupported cmd %d\n", cmd->common.opcode);
+		pr_err("unhandled cmd %d\n", cmd->common.opcode);
 		return NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
 	}
 
-	pr_err("unhandled cmd %d\n", cmd->common.opcode);
-	return NVME_SC_INVALID_OPCODE | NVME_SC_DNR;
 }
 
 int __init nvmet_init_discovery(void)
diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c
index 29b4b236afd8..409081a03b24 100644
--- a/drivers/nvme/target/fc.c
+++ b/drivers/nvme/target/fc.c
@@ -110,11 +110,19 @@ struct nvmet_fc_tgtport {
 	struct list_head		ls_busylist;
 	struct list_head		assoc_list;
 	struct ida			assoc_cnt;
-	struct nvmet_port		*port;
+	struct nvmet_fc_port_entry	*pe;
 	struct kref			ref;
 	u32				max_sg_cnt;
 };
 
+struct nvmet_fc_port_entry {
+	struct nvmet_fc_tgtport		*tgtport;
+	struct nvmet_port		*port;
+	u64				node_name;
+	u64				port_name;
+	struct list_head		pe_list;
+};
+
 struct nvmet_fc_defer_fcp_req {
 	struct list_head		req_list;
 	struct nvmefc_tgt_fcp_req	*fcp_req;
@@ -132,7 +140,6 @@ struct nvmet_fc_tgt_queue {
 	atomic_t			zrspcnt;
 	atomic_t			rsn;
 	spinlock_t			qlock;
-	struct nvmet_port		*port;
 	struct nvmet_cq			nvme_cq;
 	struct nvmet_sq			nvme_sq;
 	struct nvmet_fc_tgt_assoc	*assoc;
@@ -221,6 +228,7 @@ static DEFINE_SPINLOCK(nvmet_fc_tgtlock);
 
 static LIST_HEAD(nvmet_fc_target_list);
 static DEFINE_IDA(nvmet_fc_tgtport_cnt);
+static LIST_HEAD(nvmet_fc_portentry_list);
 
 
 static void nvmet_fc_handle_ls_rqst_work(struct work_struct *work);
@@ -645,7 +653,6 @@ nvmet_fc_alloc_target_queue(struct nvmet_fc_tgt_assoc *assoc,
 	queue->qid = qid;
 	queue->sqsize = sqsize;
 	queue->assoc = assoc;
-	queue->port = assoc->tgtport->port;
 	queue->cpu = nvmet_fc_queue_to_cpu(assoc->tgtport, qid);
 	INIT_LIST_HEAD(&queue->fod_list);
 	INIT_LIST_HEAD(&queue->avail_defer_list);
@@ -957,6 +964,83 @@ nvmet_fc_find_target_assoc(struct nvmet_fc_tgtport *tgtport,
 	return ret;
 }
 
+static void
+nvmet_fc_portentry_bind(struct nvmet_fc_tgtport *tgtport,
+			struct nvmet_fc_port_entry *pe,
+			struct nvmet_port *port)
+{
+	lockdep_assert_held(&nvmet_fc_tgtlock);
+
+	pe->tgtport = tgtport;
+	tgtport->pe = pe;
+
+	pe->port = port;
+	port->priv = pe;
+
+	pe->node_name = tgtport->fc_target_port.node_name;
+	pe->port_name = tgtport->fc_target_port.port_name;
+	INIT_LIST_HEAD(&pe->pe_list);
+
+	list_add_tail(&pe->pe_list, &nvmet_fc_portentry_list);
+}
+
+static void
+nvmet_fc_portentry_unbind(struct nvmet_fc_port_entry *pe)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&nvmet_fc_tgtlock, flags);
+	if (pe->tgtport)
+		pe->tgtport->pe = NULL;
+	list_del(&pe->pe_list);
+	spin_unlock_irqrestore(&nvmet_fc_tgtlock, flags);
+}
+
+/*
+ * called when a targetport deregisters. Breaks the relationship
+ * with the nvmet port, but leaves the port_entry in place so that
+ * re-registration can resume operation.
+ */
+static void
+nvmet_fc_portentry_unbind_tgt(struct nvmet_fc_tgtport *tgtport)
+{
+	struct nvmet_fc_port_entry *pe;
+	unsigned long flags;
+
+	spin_lock_irqsave(&nvmet_fc_tgtlock, flags);
+	pe = tgtport->pe;
+	if (pe)
+		pe->tgtport = NULL;
+	tgtport->pe = NULL;
+	spin_unlock_irqrestore(&nvmet_fc_tgtlock, flags);
+}
+
+/*
+ * called when a new targetport is registered. Looks in the
+ * existing nvmet port_entries to see if the nvmet layer is
+ * configured for the targetport's wwn's. (the targetport existed,
+ * nvmet configured, the lldd unregistered the tgtport, and is now
+ * reregistering the same targetport).  If so, set the nvmet port
+ * port entry on the targetport.
+ */
+static void
+nvmet_fc_portentry_rebind_tgt(struct nvmet_fc_tgtport *tgtport)
+{
+	struct nvmet_fc_port_entry *pe;
+	unsigned long flags;
+
+	spin_lock_irqsave(&nvmet_fc_tgtlock, flags);
+	list_for_each_entry(pe, &nvmet_fc_portentry_list, pe_list) {
+		if (tgtport->fc_target_port.node_name == pe->node_name &&
+		    tgtport->fc_target_port.port_name == pe->port_name) {
+			WARN_ON(pe->tgtport);
+			tgtport->pe = pe;
+			pe->tgtport = tgtport;
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&nvmet_fc_tgtlock, flags);
+}
 
 /**
  * nvme_fc_register_targetport - transport entry point called by an
@@ -1034,6 +1118,8 @@ nvmet_fc_register_targetport(struct nvmet_fc_port_info *pinfo,
 		goto out_free_newrec;
 	}
 
+	nvmet_fc_portentry_rebind_tgt(newrec);
+
 	spin_lock_irqsave(&nvmet_fc_tgtlock, flags);
 	list_add_tail(&newrec->tgt_list, &nvmet_fc_target_list);
 	spin_unlock_irqrestore(&nvmet_fc_tgtlock, flags);
@@ -1159,8 +1245,8 @@ nvmet_fc_delete_ctrl(struct nvmet_ctrl *ctrl)
  * nvme_fc_unregister_targetport - transport entry point called by an
  *                              LLDD to deregister/remove a previously
  *                              registered a local NVME subsystem FC port.
- * @tgtport: pointer to the (registered) target port that is to be
- *           deregistered.
+ * @target_port: pointer to the (registered) target port that is to be
+ *               deregistered.
  *
  * Returns:
  * a completion status. Must be 0 upon success; a negative errno
@@ -1171,6 +1257,8 @@ nvmet_fc_unregister_targetport(struct nvmet_fc_target_port *target_port)
 {
 	struct nvmet_fc_tgtport *tgtport = targetport_to_tgtport(target_port);
 
+	nvmet_fc_portentry_unbind_tgt(tgtport);
+
 	/* terminate any outstanding associations */
 	__nvmet_fc_free_assocs(tgtport);
 
@@ -1661,7 +1749,7 @@ nvmet_fc_handle_ls_rqst_work(struct work_struct *work)
  *
  * If this routine returns error, the LLDD should abort the exchange.
  *
- * @tgtport:    pointer to the (registered) target port the LS was
+ * @target_port: pointer to the (registered) target port the LS was
  *              received on.
  * @lsreq:      pointer to a lsreq request structure to be used to reference
  *              the exchange corresponding to the LS.
@@ -2147,7 +2235,7 @@ nvmet_fc_fcp_nvme_cmd_done(struct nvmet_req *nvme_req)
 
 
 /*
- * Actual processing routine for received FC-NVME LS Requests from the LLD
+ * Actual processing routine for received FC-NVME I/O Requests from the LLD
  */
 static void
 nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport,
@@ -2158,6 +2246,13 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport,
 	int ret;
 
 	/*
+	 * if there is no nvmet mapping to the targetport there
+	 * shouldn't be requests. just terminate them.
+	 */
+	if (!tgtport->pe)
+		goto transport_error;
+
+	/*
 	 * Fused commands are currently not supported in the linux
 	 * implementation.
 	 *
@@ -2184,7 +2279,7 @@ nvmet_fc_handle_fcp_rqst(struct nvmet_fc_tgtport *tgtport,
 
 	fod->req.cmd = &fod->cmdiubuf.sqe;
 	fod->req.rsp = &fod->rspiubuf.cqe;
-	fod->req.port = fod->queue->port;
+	fod->req.port = tgtport->pe->port;
 
 	/* clear any response payload */
 	memset(&fod->rspiubuf, 0, sizeof(fod->rspiubuf));
@@ -2468,7 +2563,7 @@ nvme_fc_parse_traddr(struct nvmet_fc_traddr *traddr, char *buf, size_t blen)
 	substring_t wwn = { name, &name[sizeof(name)-1] };
 	int nnoffset, pnoffset;
 
-	/* validate it string one of the 2 allowed formats */
+	/* validate if string is one of the 2 allowed formats */
 	if (strnlen(buf, blen) == NVME_FC_TRADDR_MAXLENGTH &&
 			!strncmp(buf, "nn-0x", NVME_FC_TRADDR_OXNNLEN) &&
 			!strncmp(&buf[NVME_FC_TRADDR_MAX_PN_OFFSET],
@@ -2508,6 +2603,7 @@ static int
 nvmet_fc_add_port(struct nvmet_port *port)
 {
 	struct nvmet_fc_tgtport *tgtport;
+	struct nvmet_fc_port_entry *pe;
 	struct nvmet_fc_traddr traddr = { 0L, 0L };
 	unsigned long flags;
 	int ret;
@@ -2524,24 +2620,40 @@ nvmet_fc_add_port(struct nvmet_port *port)
 	if (ret)
 		return ret;
 
+	pe = kzalloc(sizeof(*pe), GFP_KERNEL);
+	if (!pe)
+		return -ENOMEM;
+
 	ret = -ENXIO;
 	spin_lock_irqsave(&nvmet_fc_tgtlock, flags);
 	list_for_each_entry(tgtport, &nvmet_fc_target_list, tgt_list) {
 		if ((tgtport->fc_target_port.node_name == traddr.nn) &&
 		    (tgtport->fc_target_port.port_name == traddr.pn)) {
-			tgtport->port = port;
-			ret = 0;
+			/* a FC port can only be 1 nvmet port id */
+			if (!tgtport->pe) {
+				nvmet_fc_portentry_bind(tgtport, pe, port);
+				ret = 0;
+			} else
+				ret = -EALREADY;
 			break;
 		}
 	}
 	spin_unlock_irqrestore(&nvmet_fc_tgtlock, flags);
+
+	if (ret)
+		kfree(pe);
+
 	return ret;
 }
 
 static void
 nvmet_fc_remove_port(struct nvmet_port *port)
 {
-	/* nothing to do */
+	struct nvmet_fc_port_entry *pe = port->priv;
+
+	nvmet_fc_portentry_unbind(pe);
+
+	kfree(pe);
 }
 
 static const struct nvmet_fabrics_ops nvmet_fc_tgt_fcp_ops = {
diff --git a/drivers/nvme/target/fcloop.c b/drivers/nvme/target/fcloop.c
index 5251689a1d9a..291f4121f516 100644
--- a/drivers/nvme/target/fcloop.c
+++ b/drivers/nvme/target/fcloop.c
@@ -648,6 +648,7 @@ fcloop_fcp_op(struct nvmet_fc_target_port *tgtport,
 			break;
 
 		/* Fall-Thru to RSP handling */
+		/* FALLTHRU */
 
 	case NVMET_FCOP_RSP:
 		if (fcpreq) {
diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c
index 7bc9f6240432..f93fb5711142 100644
--- a/drivers/nvme/target/io-cmd-bdev.c
+++ b/drivers/nvme/target/io-cmd-bdev.c
@@ -58,7 +58,7 @@ static void nvmet_bio_done(struct bio *bio)
 static void nvmet_bdev_execute_rw(struct nvmet_req *req)
 {
 	int sg_cnt = req->sg_cnt;
-	struct bio *bio = &req->b.inline_bio;
+	struct bio *bio;
 	struct scatterlist *sg;
 	sector_t sector;
 	blk_qc_t cookie;
@@ -81,7 +81,12 @@ static void nvmet_bdev_execute_rw(struct nvmet_req *req)
 	sector = le64_to_cpu(req->cmd->rw.slba);
 	sector <<= (req->ns->blksize_shift - 9);
 
-	bio_init(bio, req->inline_bvec, ARRAY_SIZE(req->inline_bvec));
+	if (req->data_len <= NVMET_MAX_INLINE_DATA_LEN) {
+		bio = &req->b.inline_bio;
+		bio_init(bio, req->inline_bvec, ARRAY_SIZE(req->inline_bvec));
+	} else {
+		bio = bio_alloc(GFP_KERNEL, min(sg_cnt, BIO_MAX_PAGES));
+	}
 	bio_set_dev(bio, req->ns->bdev);
 	bio->bi_iter.bi_sector = sector;
 	bio->bi_private = req;
diff --git a/drivers/nvme/target/io-cmd-file.c b/drivers/nvme/target/io-cmd-file.c
index 81a9dc5290a8..39d972e2595f 100644
--- a/drivers/nvme/target/io-cmd-file.c
+++ b/drivers/nvme/target/io-cmd-file.c
@@ -246,7 +246,8 @@ static void nvmet_file_execute_discard(struct nvmet_req *req)
 			break;
 
 		offset = le64_to_cpu(range.slba) << req->ns->blksize_shift;
-		len = le32_to_cpu(range.nlb) << req->ns->blksize_shift;
+		len = le32_to_cpu(range.nlb);
+		len <<= req->ns->blksize_shift;
 		if (offset + len > req->ns->size) {
 			ret = NVME_SC_LBA_RANGE | NVME_SC_DNR;
 			break;
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index ec9af4ee03b6..08f7b57a1203 100644
--- a/drivers/nvme/target/nvmet.h
+++ b/drivers/nvme/target/nvmet.h
@@ -264,6 +264,7 @@ struct nvmet_fabrics_ops {
 };
 
 #define NVMET_MAX_INLINE_BIOVEC	8
+#define NVMET_MAX_INLINE_DATA_LEN NVMET_MAX_INLINE_BIOVEC * PAGE_SIZE
 
 struct nvmet_req {
 	struct nvme_command	*cmd;
diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c
index bfc4da660bb4..bd265aceb90c 100644
--- a/drivers/nvme/target/rdma.c
+++ b/drivers/nvme/target/rdma.c
@@ -122,6 +122,7 @@ struct nvmet_rdma_device {
 	int			inline_page_count;
 };
 
+static struct workqueue_struct *nvmet_rdma_delete_wq;
 static bool nvmet_rdma_use_srq;
 module_param_named(use_srq, nvmet_rdma_use_srq, bool, 0444);
 MODULE_PARM_DESC(use_srq, "Use shared receive queue.");
@@ -1267,12 +1268,12 @@ static int nvmet_rdma_queue_connect(struct rdma_cm_id *cm_id,
 
 	if (queue->host_qid == 0) {
 		/* Let inflight controller teardown complete */
-		flush_scheduled_work();
+		flush_workqueue(nvmet_rdma_delete_wq);
 	}
 
 	ret = nvmet_rdma_cm_accept(cm_id, queue, &event->param.conn);
 	if (ret) {
-		schedule_work(&queue->release_work);
+		queue_work(nvmet_rdma_delete_wq, &queue->release_work);
 		/* Destroying rdma_cm id is not needed here */
 		return 0;
 	}
@@ -1337,7 +1338,7 @@ static void __nvmet_rdma_queue_disconnect(struct nvmet_rdma_queue *queue)
 
 	if (disconnect) {
 		rdma_disconnect(queue->cm_id);
-		schedule_work(&queue->release_work);
+		queue_work(nvmet_rdma_delete_wq, &queue->release_work);
 	}
 }
 
@@ -1367,7 +1368,7 @@ static void nvmet_rdma_queue_connect_fail(struct rdma_cm_id *cm_id,
 	mutex_unlock(&nvmet_rdma_queue_mutex);
 
 	pr_err("failed to connect queue %d\n", queue->idx);
-	schedule_work(&queue->release_work);
+	queue_work(nvmet_rdma_delete_wq, &queue->release_work);
 }
 
 /**
@@ -1649,8 +1650,17 @@ static int __init nvmet_rdma_init(void)
 	if (ret)
 		goto err_ib_client;
 
+	nvmet_rdma_delete_wq = alloc_workqueue("nvmet-rdma-delete-wq",
+			WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_SYSFS, 0);
+	if (!nvmet_rdma_delete_wq) {
+		ret = -ENOMEM;
+		goto err_unreg_transport;
+	}
+
 	return 0;
 
+err_unreg_transport:
+	nvmet_unregister_transport(&nvmet_rdma_ops);
 err_ib_client:
 	ib_unregister_client(&nvmet_rdma_ib_client);
 	return ret;
@@ -1658,6 +1668,7 @@ err_ib_client:
 
 static void __exit nvmet_rdma_exit(void)
 {
+	destroy_workqueue(nvmet_rdma_delete_wq);
 	nvmet_unregister_transport(&nvmet_rdma_ops);
 	ib_unregister_client(&nvmet_rdma_ib_client);
 	WARN_ON_ONCE(!list_empty(&nvmet_rdma_queue_list));
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index 7036a6c6f86f..5542d9eadfe0 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -76,7 +76,7 @@ int dasd_gendisk_alloc(struct dasd_block *block)
 	gdp->queue = block->request_queue;
 	block->gdp = gdp;
 	set_capacity(block->gdp, 0);
-	device_add_disk(&base->cdev->dev, block->gdp);
+	device_add_disk(&base->cdev->dev, block->gdp, NULL);
 	return 0;
 }
 
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 23e526cda5c1..4e8aedd50cb0 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -685,7 +685,7 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
 	}
 
 	get_device(&dev_info->dev);
-	device_add_disk(&dev_info->dev, dev_info->gd);
+	device_add_disk(&dev_info->dev, dev_info->gd, NULL);
 
 	switch (dev_info->segment_type) {
 		case SEG_TYPE_SR:
diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c
index 98f66b7b6794..e01889394c84 100644
--- a/drivers/s390/block/scm_blk.c
+++ b/drivers/s390/block/scm_blk.c
@@ -500,7 +500,7 @@ int scm_blk_dev_setup(struct scm_blk_dev *bdev, struct scm_device *scmdev)
 
 	/* 512 byte sectors */
 	set_capacity(bdev->gendisk, scmdev->size >> 9);
-	device_add_disk(&scmdev->dev, bdev->gendisk);
+	device_add_disk(&scmdev->dev, bdev->gendisk, NULL);
 	return 0;
 
 out_queue:
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index eb97d2dd3651..62348412ed1b 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -3046,11 +3046,14 @@ scsi_device_quiesce(struct scsi_device *sdev)
 	 */
 	WARN_ON_ONCE(sdev->quiesced_by && sdev->quiesced_by != current);
 
-	blk_set_preempt_only(q);
+	if (sdev->quiesced_by == current)
+		return 0;
+
+	blk_set_pm_only(q);
 
 	blk_mq_freeze_queue(q);
 	/*
-	 * Ensure that the effect of blk_set_preempt_only() will be visible
+	 * Ensure that the effect of blk_set_pm_only() will be visible
 	 * for percpu_ref_tryget() callers that occur after the queue
 	 * unfreeze even if the queue was already frozen before this function
 	 * was called. See also https://lwn.net/Articles/573497/.
@@ -3063,7 +3066,7 @@ scsi_device_quiesce(struct scsi_device *sdev)
 	if (err == 0)
 		sdev->quiesced_by = current;
 	else
-		blk_clear_preempt_only(q);
+		blk_clear_pm_only(q);
 	mutex_unlock(&sdev->state_mutex);
 
 	return err;
@@ -3088,7 +3091,7 @@ void scsi_device_resume(struct scsi_device *sdev)
 	mutex_lock(&sdev->state_mutex);
 	WARN_ON_ONCE(!sdev->quiesced_by);
 	sdev->quiesced_by = NULL;
-	blk_clear_preempt_only(sdev->request_queue);
+	blk_clear_pm_only(sdev->request_queue);
 	if (sdev->sdev_state == SDEV_QUIESCE)
 		scsi_device_set_state(sdev, SDEV_RUNNING);
 	mutex_unlock(&sdev->state_mutex);
diff --git a/drivers/scsi/scsi_pm.c b/drivers/scsi/scsi_pm.c
index b44c1bb687a2..a2b4179bfdf7 100644
--- a/drivers/scsi/scsi_pm.c
+++ b/drivers/scsi/scsi_pm.c
@@ -8,6 +8,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/export.h>
 #include <linux/async.h>
+#include <linux/blk-pm.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_device.h>
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 4a57ffecc7e6..b762d0fd773c 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -45,6 +45,7 @@
 #include <linux/init.h>
 #include <linux/blkdev.h>
 #include <linux/blkpg.h>
+#include <linux/blk-pm.h>
 #include <linux/delay.h>
 #include <linux/mutex.h>
 #include <linux/string_helpers.h>
@@ -3275,7 +3276,7 @@ static void sd_probe_async(void *data, async_cookie_t cookie)
 	}
 
 	blk_pm_runtime_init(sdp->request_queue, dev);
-	device_add_disk(dev, gd);
+	device_add_disk(dev, gd, NULL);
 	if (sdkp->capacity)
 		sd_dif_config_host(sdkp);
 
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index d0389b20574d..54dd70ae9731 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -43,6 +43,7 @@
 #include <linux/interrupt.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>
+#include <linux/blk-pm.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/pm_runtime.h>
@@ -758,7 +759,7 @@ static int sr_probe(struct device *dev)
 
 	dev_set_drvdata(dev, cd);
 	disk->flags |= GENHD_FL_REMOVABLE;
-	device_add_disk(&sdev->sdev_gendev, disk);
+	device_add_disk(&sdev->sdev_gendev, disk, NULL);
 
 	sdev_printk(KERN_DEBUG, sdev,
 		    "Attached scsi CD-ROM %s\n", cd->cdi.name);
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index cb0461a10808..f459118bc11b 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -636,9 +636,9 @@ spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf)
 
 	/*
 	 * The unmap_zeroes_data set means that the underlying device supports
-	 * REQ_DISCARD and has the discard_zeroes_data bit set. This satisfies
-	 * the SBC requirements for LBPRZ, meaning that a subsequent read
-	 * will return zeroes after an UNMAP or WRITE SAME (16) to an LBA
+	 * REQ_OP_DISCARD and has the discard_zeroes_data bit set. This
+	 * satisfies the SBC requirements for LBPRZ, meaning that a subsequent
+	 * read will return zeroes after an UNMAP or WRITE SAME (16) to an LBA
 	 * See sbc4r36 6.6.4.
 	 */
 	if (((dev->dev_attrib.emulate_tpu != 0) ||
diff --git a/drivers/xen/biomerge.c b/drivers/xen/biomerge.c
index 55ed80c3a17c..f3fbb700f569 100644
--- a/drivers/xen/biomerge.c
+++ b/drivers/xen/biomerge.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/bio.h>
-#include <linux/io.h>
 #include <linux/export.h>
+#include <xen/xen.h>
 #include <xen/page.h>
 
 bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
@@ -20,4 +20,3 @@ bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
 	return false;
 #endif
 }
-EXPORT_SYMBOL(xen_biovec_phys_mergeable);
diff --git a/drivers/xen/xen-acpi-pad.c b/drivers/xen/xen-acpi-pad.c
index 23d1808fe027..e25ab76b9c99 100644
--- a/drivers/xen/xen-acpi-pad.c
+++ b/drivers/xen/xen-acpi-pad.c
@@ -19,6 +19,7 @@
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/acpi.h>
+#include <xen/xen.h>
 #include <xen/interface/version.h>
 #include <xen/xen-ops.h>
 #include <asm/xen/hypercall.h>