diff options
Diffstat (limited to 'drivers/scsi/eata.c')
| -rw-r--r-- | drivers/scsi/eata.c | 2571 |
1 files changed, 0 insertions, 2571 deletions
diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c deleted file mode 100644 index 6501c330d8c8..000000000000 --- a/drivers/scsi/eata.c +++ /dev/null @@ -1,2571 +0,0 @@ -/* - * eata.c - Low-level driver for EATA/DMA SCSI host adapters. - * - * 03 Jun 2003 Rev. 8.10 for linux-2.5.70 - * + Update for new IRQ API. - * + Use "goto" when appropriate. - * + Drop eata.h. - * + Update for new module_param API. - * + Module parameters can now be specified only in the - * same format as the kernel boot options. - * - * boot option old module param - * ----------- ------------------ - * addr,... io_port=addr,... - * lc:[y|n] linked_comm=[1|0] - * mq:xx max_queue_depth=xx - * tm:[0|1|2] tag_mode=[0|1|2] - * et:[y|n] ext_tran=[1|0] - * rs:[y|n] rev_scan=[1|0] - * ip:[y|n] isa_probe=[1|0] - * ep:[y|n] eisa_probe=[1|0] - * pp:[y|n] pci_probe=[1|0] - * - * A valid example using the new parameter format is: - * modprobe eata "eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n" - * - * which is equivalent to the old format: - * modprobe eata io_port=0x7410,0x230 linked_comm=1 tag_mode=0 \ - * max_queue_depth=4 eisa_probe=0 - * - * 12 Feb 2003 Rev. 8.04 for linux 2.5.60 - * + Release irq before calling scsi_register. - * - * 12 Nov 2002 Rev. 8.02 for linux 2.5.47 - * + Release driver_lock before calling scsi_register. - * - * 11 Nov 2002 Rev. 8.01 for linux 2.5.47 - * + Fixed bios_param and scsicam_bios_param calling parameters. - * - * 28 Oct 2002 Rev. 8.00 for linux 2.5.44-ac4 - * + Use new tcq and adjust_queue_depth api. - * + New command line option (tm:[0-2]) to choose the type of tags: - * 0 -> disable tagging ; 1 -> simple tags ; 2 -> ordered tags. - * Default is tm:0 (tagged commands disabled). - * For compatibility the "tc:" option is an alias of the "tm:" - * option; tc:n is equivalent to tm:0 and tc:y is equivalent to - * tm:1. - * + The tagged_comm module parameter has been removed, use tag_mode - * instead, equivalent to the "tm:" boot option. - * - * 10 Oct 2002 Rev. 7.70 for linux 2.5.42 - * + Foreport from revision 6.70. - * - * 25 Jun 2002 Rev. 6.70 for linux 2.4.19 - * + This release is the first one tested on a Big Endian platform: - * fixed endian-ness problem due to bitfields; - * fixed endian-ness problem in read_pio. - * + Added new options for selectively probing ISA, EISA and PCI bus: - * - * Boot option Parameter name Default according to - * - * ip:[y|n] isa_probe=[1|0] CONFIG_ISA defined - * ep:[y|n] eisa_probe=[1|0] CONFIG_EISA defined - * pp:[y|n] pci_probe=[1|0] CONFIG_PCI defined - * - * The default action is to perform probing if the corresponding - * bus is configured and to skip probing otherwise. - * - * + If pci_probe is in effect and a list of I/O ports is specified - * as parameter or boot option, pci_enable_device() is performed - * on all pci devices matching PCI_CLASS_STORAGE_SCSI. - * - * 21 Feb 2002 Rev. 6.52 for linux 2.4.18 - * + Backport from rev. 7.22 (use io_request_lock). - * - * 20 Feb 2002 Rev. 7.22 for linux 2.5.5 - * + Remove any reference to virt_to_bus(). - * + Fix pio hang while detecting multiple HBAs. - * + Fixed a board detection bug: in a system with - * multiple ISA/EISA boards, all but the first one - * were erroneously detected as PCI. - * - * 01 Jan 2002 Rev. 7.20 for linux 2.5.1 - * + Use the dynamic DMA mapping API. - * - * 19 Dec 2001 Rev. 7.02 for linux 2.5.1 - * + Use SCpnt->sc_data_direction if set. - * + Use sglist.page instead of sglist.address. - * - * 11 Dec 2001 Rev. 7.00 for linux 2.5.1 - * + Use host->host_lock instead of io_request_lock. - * - * 1 May 2001 Rev. 6.05 for linux 2.4.4 - * + Clean up all pci related routines. - * + Fix data transfer direction for opcode SEND_CUE_SHEET (0x5d) - * - * 30 Jan 2001 Rev. 6.04 for linux 2.4.1 - * + Call pci_resource_start after pci_enable_device. - * - * 25 Jan 2001 Rev. 6.03 for linux 2.4.0 - * + "check_region" call replaced by "request_region". - * - * 22 Nov 2000 Rev. 6.02 for linux 2.4.0-test11 - * + Return code checked when calling pci_enable_device. - * + Removed old scsi error handling support. - * + The obsolete boot option flag eh:n is silently ignored. - * + Removed error messages while a disk drive is powered up at - * boot time. - * + Improved boot messages: all tagged capable device are - * indicated as "tagged" or "soft-tagged" : - * - "soft-tagged" means that the driver is trying to do its - * own tagging (i.e. the tc:y option is in effect); - * - "tagged" means that the device supports tagged commands, - * but the driver lets the HBA be responsible for tagging - * support. - * - * 16 Sep 1999 Rev. 5.11 for linux 2.2.12 and 2.3.18 - * + Updated to the new __setup interface for boot command line options. - * + When loaded as a module, accepts the new parameter boot_options - * which value is a string with the same format of the kernel boot - * command line options. A valid example is: - * modprobe eata 'boot_options="0x7410,0x230,lc:y,tc:n,mq:4"' - * - * 9 Sep 1999 Rev. 5.10 for linux 2.2.12 and 2.3.17 - * + 64bit cleanup for Linux/Alpha platform support - * (contribution from H.J. Lu). - * - * 22 Jul 1999 Rev. 5.00 for linux 2.2.10 and 2.3.11 - * + Removed pre-2.2 source code compatibility. - * + Added call to pci_set_master. - * - * 26 Jul 1998 Rev. 4.33 for linux 2.0.35 and 2.1.111 - * + Added command line option (rs:[y|n]) to reverse the scan order - * of PCI boards. The default is rs:y, which reverses the BIOS order - * while registering PCI boards. The default value rs:y generates - * the same order of all previous revisions of this driver. - * Pls. note that "BIOS order" might have been reversed itself - * after the 2.1.9x PCI modifications in the linux kernel. - * The rs value is ignored when the explicit list of addresses - * is used by the "eata=port0,port1,..." command line option. - * + Added command line option (et:[y|n]) to force use of extended - * translation (255 heads, 63 sectors) as disk geometry. - * The default is et:n, which uses the disk geometry returned - * by scsicam_bios_param. The default value et:n is compatible with - * all previous revisions of this driver. - * - * 28 May 1998 Rev. 4.32 for linux 2.0.33 and 2.1.104 - * Increased busy timeout from 10 msec. to 200 msec. while - * processing interrupts. - * - * 16 May 1998 Rev. 4.31 for linux 2.0.33 and 2.1.102 - * Improved abort handling during the eh recovery process. - * - * 13 May 1998 Rev. 4.30 for linux 2.0.33 and 2.1.101 - * The driver is now fully SMP safe, including the - * abort and reset routines. - * Added command line options (eh:[y|n]) to choose between - * new_eh_code and the old scsi code. - * If linux version >= 2.1.101 the default is eh:y, while the eh - * option is ignored for previous releases and the old scsi code - * is used. - * - * 18 Apr 1998 Rev. 4.20 for linux 2.0.33 and 2.1.97 - * Reworked interrupt handler. - * - * 11 Apr 1998 rev. 4.05 for linux 2.0.33 and 2.1.95 - * Major reliability improvement: when a batch with overlapping - * requests is detected, requests are queued one at a time - * eliminating any possible board or drive reordering. - * - * 10 Apr 1998 rev. 4.04 for linux 2.0.33 and 2.1.95 - * Improved SMP support (if linux version >= 2.1.95). - * - * 9 Apr 1998 rev. 4.03 for linux 2.0.33 and 2.1.94 - * Added support for new PCI code and IO-APIC remapping of irqs. - * Performance improvement: when sequential i/o is detected, - * always use direct sort instead of reverse sort. - * - * 4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92 - * io_port is now unsigned long. - * - * 17 Mar 1998 rev. 4.01 for linux 2.0.33 and 2.1.88 - * Use new scsi error handling code (if linux version >= 2.1.88). - * Use new interrupt code. - * - * 12 Sep 1997 rev. 3.11 for linux 2.0.30 and 2.1.55 - * Use of udelay inside the wait loops to avoid timeout - * problems with fast cpus. - * Removed check about useless calls to the interrupt service - * routine (reported on SMP systems only). - * At initialization time "sorted/unsorted" is displayed instead - * of "linked/unlinked" to reinforce the fact that "linking" is - * nothing but "elevator sorting" in the actual implementation. - * - * 17 May 1997 rev. 3.10 for linux 2.0.30 and 2.1.38 - * Use of serial_number_at_timeout in abort and reset processing. - * Use of the __initfunc and __initdata macro in setup code. - * Minor cleanups in the list_statistics code. - * Increased controller busy timeout in order to better support - * slow SCSI devices. - * - * 24 Feb 1997 rev. 3.00 for linux 2.0.29 and 2.1.26 - * When loading as a module, parameter passing is now supported - * both in 2.0 and in 2.1 style. - * Fixed data transfer direction for some SCSI opcodes. - * Immediate acknowledge to request sense commands. - * Linked commands to each disk device are now reordered by elevator - * sorting. Rare cases in which reordering of write requests could - * cause wrong results are managed. - * Fixed spurious timeouts caused by long simple queue tag sequences. - * New command line option (tm:[0-3]) to choose the type of tags: - * 0 -> mixed (default); 1 -> simple; 2 -> head; 3 -> ordered. - * - * 18 Jan 1997 rev. 2.60 for linux 2.1.21 and 2.0.28 - * Added command line options to enable/disable linked commands - * (lc:[y|n]), tagged commands (tc:[y|n]) and to set the max queue - * depth (mq:xx). Default is "eata=lc:n,tc:n,mq:16". - * Improved command linking. - * Documented how to setup RAID-0 with DPT SmartRAID boards. - * - * 8 Jan 1997 rev. 2.50 for linux 2.1.20 and 2.0.27 - * Added linked command support. - * Improved detection of PCI boards using ISA base addresses. - * - * 3 Dec 1996 rev. 2.40 for linux 2.1.14 and 2.0.27 - * Added support for tagged commands and queue depth adjustment. - * - * 22 Nov 1996 rev. 2.30 for linux 2.1.12 and 2.0.26 - * When CONFIG_PCI is defined, BIOS32 is used to include in the - * list of i/o ports to be probed all the PCI SCSI controllers. - * The list of i/o ports to be probed can be overwritten by the - * "eata=port0,port1,...." boot command line option. - * Scatter/gather lists are now allocated by a number of kmalloc - * calls, in order to avoid the previous size limit of 64Kb. - * - * 16 Nov 1996 rev. 2.20 for linux 2.1.10 and 2.0.25 - * Added support for EATA 2.0C, PCI, multichannel and wide SCSI. - * - * 27 Sep 1996 rev. 2.12 for linux 2.1.0 - * Portability cleanups (virtual/bus addressing, little/big endian - * support). - * - * 09 Jul 1996 rev. 2.11 for linux 2.0.4 - * Number of internal retries is now limited. - * - * 16 Apr 1996 rev. 2.10 for linux 1.3.90 - * New argument "reset_flags" to the reset routine. - * - * 6 Jul 1995 rev. 2.01 for linux 1.3.7 - * Update required by the new /proc/scsi support. - * - * 11 Mar 1995 rev. 2.00 for linux 1.2.0 - * Fixed a bug which prevented media change detection for removable - * disk drives. - * - * 23 Feb 1995 rev. 1.18 for linux 1.1.94 - * Added a check for scsi_register returning NULL. - * - * 11 Feb 1995 rev. 1.17 for linux 1.1.91 - * Now DEBUG_RESET is disabled by default. - * Register a board even if it does not assert DMA protocol support - * (DPT SK2011B does not report correctly the dmasup bit). - * - * 9 Feb 1995 rev. 1.16 for linux 1.1.90 - * Use host->wish_block instead of host->block. - * New list of Data Out SCSI commands. - * - * 8 Feb 1995 rev. 1.15 for linux 1.1.89 - * Cleared target_time_out counter while performing a reset. - * All external symbols renamed to avoid possible name conflicts. - * - * 28 Jan 1995 rev. 1.14 for linux 1.1.86 - * Added module support. - * Log and do a retry when a disk drive returns a target status - * different from zero on a recovered error. - * - * 24 Jan 1995 rev. 1.13 for linux 1.1.85 - * Use optimized board configuration, with a measured performance - * increase in the range 10%-20% on i/o throughput. - * - * 16 Jan 1995 rev. 1.12 for linux 1.1.81 - * Fix mscp structure comments (no functional change). - * Display a message if check_region detects a port address - * already in use. - * - * 17 Dec 1994 rev. 1.11 for linux 1.1.74 - * Use the scsicam_bios_param routine. This allows an easy - * migration path from disk partition tables created using - * different SCSI drivers and non optimal disk geometry. - * - * 15 Dec 1994 rev. 1.10 for linux 1.1.74 - * Added support for ISA EATA boards (DPT PM2011, DPT PM2021). - * The host->block flag is set for all the detected ISA boards. - * The detect routine no longer enforces LEVEL triggering - * for EISA boards, it just prints a warning message. - * - * 30 Nov 1994 rev. 1.09 for linux 1.1.68 - * Redo i/o on target status CHECK_CONDITION for TYPE_DISK only. - * Added optional support for using a single board at a time. - * - * 18 Nov 1994 rev. 1.08 for linux 1.1.64 - * Forces sg_tablesize = 64 and can_queue = 64 if these - * values are not correctly detected (DPT PM2012). - * - * 14 Nov 1994 rev. 1.07 for linux 1.1.63 Final BETA release. - * 04 Aug 1994 rev. 1.00 for linux 1.1.39 First BETA release. - * - * - * This driver is based on the CAM (Common Access Method Committee) - * EATA (Enhanced AT Bus Attachment) rev. 2.0A, using DMA protocol. - * - * Copyright (C) 1994-2003 Dario Ballabio (ballabio_dario@emc.com) - * - * Alternate email: dario.ballabio@inwind.it, dario.ballabio@tiscalinet.it - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that redistributions of source - * code retain the above copyright notice and this comment without - * modification. - * - */ - -/* - * - * Here is a brief description of the DPT SCSI host adapters. - * All these boards provide an EATA/DMA compatible programming interface - * and are fully supported by this driver in any configuration, including - * multiple SCSI channels: - * - * PM2011B/9X - Entry Level ISA - * PM2021A/9X - High Performance ISA - * PM2012A Old EISA - * PM2012B Old EISA - * PM2022A/9X - Entry Level EISA - * PM2122A/9X - High Performance EISA - * PM2322A/9X - Extra High Performance EISA - * PM3021 - SmartRAID Adapter for ISA - * PM3222 - SmartRAID Adapter for EISA (PM3222W is 16-bit wide SCSI) - * PM3224 - SmartRAID Adapter for PCI (PM3224W is 16-bit wide SCSI) - * PM33340UW - SmartRAID Adapter for PCI ultra wide multichannel - * - * The above list is just an indication: as a matter of fact all DPT - * boards using the EATA/DMA protocol are supported by this driver, - * since they use exactely the same programming interface. - * - * The DPT PM2001 provides only the EATA/PIO interface and hence is not - * supported by this driver. - * - * This code has been tested with up to 3 Distributed Processing Technology - * PM2122A/9X (DPT SCSI BIOS v002.D1, firmware v05E.0) EISA controllers, - * in any combination of private and shared IRQ. - * PCI support has been tested using up to 2 DPT PM3224W (DPT SCSI BIOS - * v003.D0, firmware v07G.0). - * - * DPT SmartRAID boards support "Hardware Array" - a group of disk drives - * which are all members of the same RAID-0, RAID-1 or RAID-5 array implemented - * in host adapter hardware. Hardware Arrays are fully compatible with this - * driver, since they look to it as a single disk drive. - * - * WARNING: to create a RAID-0 "Hardware Array" you must select "Other Unix" - * as the current OS in the DPTMGR "Initial System Installation" menu. - * Otherwise RAID-0 is generated as an "Array Group" (i.e. software RAID-0), - * which is not supported by the actual SCSI subsystem. - * To get the "Array Group" functionality, the Linux MD driver must be used - * instead of the DPT "Array Group" feature. - * - * Multiple ISA, EISA and PCI boards can be configured in the same system. - * It is suggested to put all the EISA boards on the same IRQ level, all - * the PCI boards on another IRQ level, while ISA boards cannot share - * interrupts. - * - * If you configure multiple boards on the same IRQ, the interrupt must - * be _level_ triggered (not _edge_ triggered). - * - * This driver detects EATA boards by probes at fixed port addresses, - * so no BIOS32 or PCI BIOS support is required. - * The suggested way to detect a generic EATA PCI board is to force on it - * any unused EISA address, even if there are other controllers on the EISA - * bus, or even if you system has no EISA bus at all. - * Do not force any ISA address on EATA PCI boards. - * - * If PCI bios support is configured into the kernel, BIOS32 is used to - * include in the list of i/o ports to be probed all the PCI SCSI controllers. - * - * Due to a DPT BIOS "feature", it might not be possible to force an EISA - * address on more than a single DPT PCI board, so in this case you have to - * let the PCI BIOS assign the addresses. - * - * The sequence of detection probes is: - * - * - ISA 0x1F0; - * - PCI SCSI controllers (only if BIOS32 is available); - * - EISA/PCI 0x1C88 through 0xFC88 (corresponding to EISA slots 1 to 15); - * - ISA 0x170, 0x230, 0x330. - * - * The above list of detection probes can be totally replaced by the - * boot command line option: "eata=port0,port1,port2,...", where the - * port0, port1... arguments are ISA/EISA/PCI addresses to be probed. - * For example using "eata=0x7410,0x7450,0x230", the driver probes - * only the two PCI addresses 0x7410 and 0x7450 and the ISA address 0x230, - * in this order; "eata=0" totally disables this driver. - * - * After the optional list of detection probes, other possible command line - * options are: - * - * et:y force use of extended translation (255 heads, 63 sectors); - * et:n use disk geometry detected by scsicam_bios_param; - * rs:y reverse scan order while detecting PCI boards; - * rs:n use BIOS order while detecting PCI boards; - * lc:y enables linked commands; - * lc:n disables linked commands; - * tm:0 disables tagged commands (same as tc:n); - * tm:1 use simple queue tags (same as tc:y); - * tm:2 use ordered queue tags (same as tc:2); - * mq:xx set the max queue depth to the value xx (2 <= xx <= 32). - * - * The default value is: "eata=lc:n,mq:16,tm:0,et:n,rs:n". - * An example using the list of detection probes could be: - * "eata=0x7410,0x230,lc:y,tm:2,mq:4,et:n". - * - * When loading as a module, parameters can be specified as well. - * The above example would be (use 1 in place of y and 0 in place of n): - * - * modprobe eata io_port=0x7410,0x230 linked_comm=1 \ - * max_queue_depth=4 ext_tran=0 tag_mode=2 \ - * rev_scan=1 - * - * ---------------------------------------------------------------------------- - * In this implementation, linked commands are designed to work with any DISK - * or CD-ROM, since this linking has only the intent of clustering (time-wise) - * and reordering by elevator sorting commands directed to each device, - * without any relation with the actual SCSI protocol between the controller - * and the device. - * If Q is the queue depth reported at boot time for each device (also named - * cmds/lun) and Q > 2, whenever there is already an active command to the - * device all other commands to the same device (up to Q-1) are kept waiting - * in the elevator sorting queue. When the active command completes, the - * commands in this queue are sorted by sector address. The sort is chosen - * between increasing or decreasing by minimizing the seek distance between - * the sector of the commands just completed and the sector of the first - * command in the list to be sorted. - * Trivial math assures that the unsorted average seek distance when doing - * random seeks over S sectors is S/3. - * When (Q-1) requests are uniformly distributed over S sectors, the average - * distance between two adjacent requests is S/((Q-1) + 1), so the sorted - * average seek distance for (Q-1) random requests over S sectors is S/Q. - * The elevator sorting hence divides the seek distance by a factor Q/3. - * The above pure geometric remarks are valid in all cases and the - * driver effectively reduces the seek distance by the predicted factor - * when there are Q concurrent read i/o operations on the device, but this - * does not necessarily results in a noticeable performance improvement: - * your mileage may vary.... - * - * Note: command reordering inside a batch of queued commands could cause - * wrong results only if there is at least one write request and the - * intersection (sector-wise) of all requests is not empty. - * When the driver detects a batch including overlapping requests - * (a really rare event) strict serial (pid) order is enforced. - * ---------------------------------------------------------------------------- - * The extended translation option (et:y) is useful when using large physical - * disks/arrays. It could also be useful when switching between Adaptec boards - * and DPT boards without reformatting the disk. - * When a boot disk is partitioned with extended translation, in order to - * be able to boot it with a DPT board is could be necessary to add to - * lilo.conf additional commands as in the following example: - * - * fix-table - * disk=/dev/sda bios=0x80 sectors=63 heads=128 cylindres=546 - * - * where the above geometry should be replaced with the one reported at - * power up by the DPT controller. - * ---------------------------------------------------------------------------- - * - * The boards are named EATA0, EATA1,... according to the detection order. - * - * In order to support multiple ISA boards in a reliable way, - * the driver sets host->wish_block = 1 for all ISA boards. - */ - -#include <linux/string.h> -#include <linux/kernel.h> -#include <linux/ioport.h> -#include <linux/delay.h> -#include <linux/proc_fs.h> -#include <linux/blkdev.h> -#include <linux/interrupt.h> -#include <linux/stat.h> -#include <linux/pci.h> -#include <linux/init.h> -#include <linux/ctype.h> -#include <linux/spinlock.h> -#include <linux/dma-mapping.h> -#include <linux/slab.h> -#include <asm/byteorder.h> -#include <asm/dma.h> -#include <asm/io.h> -#include <asm/irq.h> - -#include <scsi/scsi.h> -#include <scsi/scsi_cmnd.h> -#include <scsi/scsi_device.h> -#include <scsi/scsi_host.h> -#include <scsi/scsi_tcq.h> -#include <scsi/scsicam.h> - -static int eata2x_detect(struct scsi_host_template *); -static int eata2x_release(struct Scsi_Host *); -static int eata2x_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); -static int eata2x_eh_abort(struct scsi_cmnd *); -static int eata2x_eh_host_reset(struct scsi_cmnd *); -static int eata2x_bios_param(struct scsi_device *, struct block_device *, - sector_t, int *); -static int eata2x_slave_configure(struct scsi_device *); - -static struct scsi_host_template driver_template = { - .name = "EATA/DMA 2.0x rev. 8.10.00 ", - .detect = eata2x_detect, - .release = eata2x_release, - .queuecommand = eata2x_queuecommand, - .eh_abort_handler = eata2x_eh_abort, - .eh_host_reset_handler = eata2x_eh_host_reset, - .bios_param = eata2x_bios_param, - .slave_configure = eata2x_slave_configure, - .this_id = 7, - .unchecked_isa_dma = 1, - .use_clustering = ENABLE_CLUSTERING, -}; - -#if !defined(__BIG_ENDIAN_BITFIELD) && !defined(__LITTLE_ENDIAN_BITFIELD) -#error "Adjust your <asm/byteorder.h> defines" -#endif - -/* Subversion values */ -#define ISA 0 -#define ESA 1 - -#undef FORCE_CONFIG - -#undef DEBUG_LINKED_COMMANDS -#undef DEBUG_DETECT -#undef DEBUG_PCI_DETECT -#undef DEBUG_INTERRUPT -#undef DEBUG_RESET -#undef DEBUG_GENERATE_ERRORS -#undef DEBUG_GENERATE_ABORTS -#undef DEBUG_GEOMETRY - -#define MAX_ISA 4 -#define MAX_VESA 0 -#define MAX_EISA 15 -#define MAX_PCI 16 -#define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI) -#define MAX_CHANNEL 4 -#define MAX_LUN 32 -#define MAX_TARGET 32 -#define MAX_MAILBOXES 64 -#define MAX_SGLIST 64 -#define MAX_LARGE_SGLIST 122 -#define MAX_INTERNAL_RETRIES 64 -#define MAX_CMD_PER_LUN 2 -#define MAX_TAGGED_CMD_PER_LUN (MAX_MAILBOXES - MAX_CMD_PER_LUN) - -#define SKIP ULONG_MAX -#define FREE 0 -#define IN_USE 1 -#define LOCKED 2 -#define IN_RESET 3 -#define IGNORE 4 -#define READY 5 -#define ABORTING 6 -#define NO_DMA 0xff -#define MAXLOOP 10000 -#define TAG_DISABLED 0 -#define TAG_SIMPLE 1 -#define TAG_ORDERED 2 - -#define REG_CMD 7 -#define REG_STATUS 7 -#define REG_AUX_STATUS 8 -#define REG_DATA 0 -#define REG_DATA2 1 -#define REG_SEE 6 -#define REG_LOW 2 -#define REG_LM 3 -#define REG_MID 4 -#define REG_MSB 5 -#define REGION_SIZE 9UL -#define MAX_ISA_ADDR 0x03ff -#define MIN_EISA_ADDR 0x1c88 -#define MAX_EISA_ADDR 0xfc88 -#define BSY_ASSERTED 0x80 -#define DRQ_ASSERTED 0x08 -#define ABSY_ASSERTED 0x01 -#define IRQ_ASSERTED 0x02 -#define READ_CONFIG_PIO 0xf0 -#define SET_CONFIG_PIO 0xf1 -#define SEND_CP_PIO 0xf2 -#define RECEIVE_SP_PIO 0xf3 -#define TRUNCATE_XFR_PIO 0xf4 -#define RESET_PIO 0xf9 -#define READ_CONFIG_DMA 0xfd -#define SET_CONFIG_DMA 0xfe -#define SEND_CP_DMA 0xff -#define ASOK 0x00 -#define ASST 0x01 - -#define YESNO(a) ((a) ? 'y' : 'n') -#define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM) - -/* "EATA", in Big Endian format */ -#define EATA_SIG_BE 0x45415441 - -/* Number of valid bytes in the board config structure for EATA 2.0x */ -#define EATA_2_0A_SIZE 28 -#define EATA_2_0B_SIZE 30 -#define EATA_2_0C_SIZE 34 - -/* Board info structure */ -struct eata_info { - u_int32_t data_len; /* Number of valid bytes after this field */ - u_int32_t sign; /* ASCII "EATA" signature */ - -#if defined(__BIG_ENDIAN_BITFIELD) - unchar version : 4, - : 4; - unchar haaval : 1, - ata : 1, - drqvld : 1, - dmasup : 1, - morsup : 1, - trnxfr : 1, - tarsup : 1, - ocsena : 1; -#else - unchar : 4, /* unused low nibble */ - version : 4; /* EATA version, should be 0x1 */ - unchar ocsena : 1, /* Overlap Command Support Enabled */ - tarsup : 1, /* Target Mode Supported */ - trnxfr : 1, /* Truncate Transfer Cmd NOT Necessary */ - morsup : 1, /* More Supported */ - dmasup : 1, /* DMA Supported */ - drqvld : 1, /* DRQ Index (DRQX) is valid */ - ata : 1, /* This is an ATA device */ - haaval : 1; /* Host Adapter Address Valid */ -#endif - - ushort cp_pad_len; /* Number of pad bytes after cp_len */ - unchar host_addr[4]; /* Host Adapter SCSI ID for channels 3, 2, 1, 0 */ - u_int32_t cp_len; /* Number of valid bytes in cp */ - u_int32_t sp_len; /* Number of valid bytes in sp */ - ushort queue_size; /* Max number of cp that can be queued */ - ushort unused; - ushort scatt_size; /* Max number of entries in scatter/gather table */ - -#if defined(__BIG_ENDIAN_BITFIELD) - unchar drqx : 2, - second : 1, - irq_tr : 1, - irq : 4; - unchar sync; - unchar : 4, - res1 : 1, - large_sg : 1, - forcaddr : 1, - isaena : 1; - unchar max_chan : 3, - max_id : 5; - unchar max_lun; - unchar eisa : 1, - pci : 1, - idquest : 1, - m1 : 1, - : 4; -#else - unchar irq : 4, /* Interrupt Request assigned to this controller */ - irq_tr : 1, /* 0 for edge triggered, 1 for level triggered */ - second : 1, /* 1 if this is a secondary (not primary) controller */ - drqx : 2; /* DRQ Index (0=DMA0, 1=DMA7, 2=DMA6, 3=DMA5) */ - unchar sync; /* 1 if scsi target id 7...0 is running sync scsi */ - - /* Structure extension defined in EATA 2.0B */ - unchar isaena : 1, /* ISA i/o addressing is disabled/enabled */ - forcaddr : 1, /* Port address has been forced */ - large_sg : 1, /* 1 if large SG lists are supported */ - res1 : 1, - : 4; - unchar max_id : 5, /* Max SCSI target ID number */ - max_chan : 3; /* Max SCSI channel number on this board */ - - /* Structure extension defined in EATA 2.0C */ - unchar max_lun; /* Max SCSI LUN number */ - unchar - : 4, - m1 : 1, /* This is a PCI with an M1 chip installed */ - idquest : 1, /* RAIDNUM returned is questionable */ - pci : 1, /* This board is PCI */ - eisa : 1; /* This board is EISA */ -#endif - - unchar raidnum; /* Uniquely identifies this HBA in a system */ - unchar notused; - - ushort ipad[247]; -}; - -/* Board config structure */ -struct eata_config { - ushort len; /* Number of bytes following this field */ - -#if defined(__BIG_ENDIAN_BITFIELD) - unchar : 4, - tarena : 1, - mdpena : 1, - ocena : 1, - edis : 1; -#else - unchar edis : 1, /* Disable EATA interface after config command */ - ocena : 1, /* Overlapped Commands Enabled */ - mdpena : 1, /* Transfer all Modified Data Pointer Messages */ - tarena : 1, /* Target Mode Enabled for this controller */ - : 4; -#endif - unchar cpad[511]; -}; - -/* Returned status packet structure */ -struct mssp { -#if defined(__BIG_ENDIAN_BITFIELD) - unchar eoc : 1, - adapter_status : 7; -#else - unchar adapter_status : 7, /* State related to current command */ - eoc : 1; /* End Of Command (1 = command completed) */ -#endif - unchar target_status; /* SCSI status received after data transfer */ - unchar unused[2]; - u_int32_t inv_res_len; /* Number of bytes not transferred */ - u_int32_t cpp_index; /* Index of address set in cp */ - char mess[12]; -}; - -struct sg_list { - unsigned int address; /* Segment Address */ - unsigned int num_bytes; /* Segment Length */ -}; - -/* MailBox SCSI Command Packet */ -struct mscp { -#if defined(__BIG_ENDIAN_BITFIELD) - unchar din : 1, - dout : 1, - interp : 1, - : 1, - sg : 1, - reqsen :1, - init : 1, - sreset : 1; - unchar sense_len; - unchar unused[3]; - unchar : 7, - fwnest : 1; - unchar : 5, - hbaci : 1, - iat : 1, - phsunit : 1; - unchar channel : 3, - target : 5; - unchar one : 1, - dispri : 1, - luntar : 1, - lun : 5; -#else - unchar sreset :1, /* SCSI Bus Reset Signal should be asserted */ - init :1, /* Re-initialize controller and self test */ - reqsen :1, /* Transfer Request Sense Data to addr using DMA */ - sg :1, /* Use Scatter/Gather */ - :1, - interp :1, /* The controller interprets cp, not the target */ - dout :1, /* Direction of Transfer is Out (Host to Target) */ - din :1; /* Direction of Transfer is In (Target to Host) */ - unchar sense_len; /* Request Sense Length */ - unchar unused[3]; - unchar fwnest : 1, /* Send command to a component of an Array Group */ - : 7; - unchar phsunit : 1, /* Send to Target Physical Unit (bypass RAID) */ - iat : 1, /* Inhibit Address Translation */ - hbaci : 1, /* Inhibit HBA Caching for this command */ - : 5; - unchar target : 5, /* SCSI target ID */ - channel : 3; /* SCSI channel number */ - unchar lun : 5, /* SCSI logical unit number */ - luntar : 1, /* This cp is for Target (not LUN) */ - dispri : 1, /* Disconnect Privilege granted */ - one : 1; /* 1 */ -#endif - - unchar mess[3]; /* Massage to/from Target */ - unchar cdb[12]; /* Command Descriptor Block */ - u_int32_t data_len; /* If sg=0 Data Length, if sg=1 sglist length */ - u_int32_t cpp_index; /* Index of address to be returned in sp */ - u_int32_t data_address; /* If sg=0 Data Address, if sg=1 sglist address */ - u_int32_t sp_dma_addr; /* Address where sp is DMA'ed when cp completes */ - u_int32_t sense_addr; /* Address where Sense Data is DMA'ed on error */ - - /* Additional fields begin here. */ - struct scsi_cmnd *SCpnt; - - /* All the cp structure is zero filled by queuecommand except the - following CP_TAIL_SIZE bytes, initialized by detect */ - dma_addr_t cp_dma_addr; /* dma handle for this cp structure */ - struct sg_list *sglist; /* pointer to the allocated SG list */ -}; - -#define CP_TAIL_SIZE (sizeof(struct sglist *) + sizeof(dma_addr_t)) - -struct hostdata { - struct mscp cp[MAX_MAILBOXES]; /* Mailboxes for this board */ - unsigned int cp_stat[MAX_MAILBOXES]; /* FREE, IN_USE, LOCKED, IN_RESET */ - unsigned int last_cp_used; /* Index of last mailbox used */ - unsigned int iocount; /* Total i/o done for this board */ - int board_number; /* Number of this board */ - char board_name[16]; /* Name of this board */ - int in_reset; /* True if board is doing a reset */ - int target_to[MAX_TARGET][MAX_CHANNEL]; /* N. of timeout errors on target */ - int target_redo[MAX_TARGET][MAX_CHANNEL]; /* If 1 redo i/o on target */ - unsigned int retries; /* Number of internal retries */ - unsigned long last_retried_pid; /* Pid of last retried command */ - unsigned char subversion; /* Bus type, either ISA or EISA/PCI */ - unsigned char protocol_rev; /* EATA 2.0 rev., 'A' or 'B' or 'C' */ - unsigned char is_pci; /* 1 is bus type is PCI */ - struct pci_dev *pdev; /* pdev for PCI bus, NULL otherwise */ - struct mssp *sp_cpu_addr; /* cpu addr for DMA buffer sp */ - dma_addr_t sp_dma_addr; /* dma handle for DMA buffer sp */ - struct mssp sp; /* Local copy of sp buffer */ -}; - -static struct Scsi_Host *sh[MAX_BOARDS]; -static const char *driver_name = "EATA"; -static char sha[MAX_BOARDS]; - -/* Initialize num_boards so that ihdlr can work while detect is in progress */ -static unsigned int num_boards = MAX_BOARDS; - -static unsigned long io_port[] = { - - /* Space for MAX_INT_PARAM ports usable while loading as a module */ - SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, - SKIP, SKIP, - - /* First ISA */ - 0x1f0, - - /* Space for MAX_PCI ports possibly reported by PCI_BIOS */ - SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, - SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, - - /* MAX_EISA ports */ - 0x1c88, 0x2c88, 0x3c88, 0x4c88, 0x5c88, 0x6c88, 0x7c88, 0x8c88, - 0x9c88, 0xac88, 0xbc88, 0xcc88, 0xdc88, 0xec88, 0xfc88, - - /* Other (MAX_ISA - 1) ports */ - 0x170, 0x230, 0x330, - - /* End of list */ - 0x0 -}; - -/* Device is Big Endian */ -#define H2DEV(x) cpu_to_be32(x) -#define DEV2H(x) be32_to_cpu(x) -#define H2DEV16(x) cpu_to_be16(x) -#define DEV2H16(x) be16_to_cpu(x) - -/* But transfer orientation from the 16 bit data register is Little Endian */ -#define REG2H(x) le16_to_cpu(x) - -static irqreturn_t do_interrupt_handler(int, void *); -static void flush_dev(struct scsi_device *, unsigned long, struct hostdata *, - unsigned int); -static int do_trace = 0; -static int setup_done = 0; -static int link_statistics; -static int ext_tran = 0; -static int rev_scan = 1; - -#if defined(CONFIG_SCSI_EATA_TAGGED_QUEUE) -static int tag_mode = TAG_SIMPLE; -#else -static int tag_mode = TAG_DISABLED; -#endif - -#if defined(CONFIG_SCSI_EATA_LINKED_COMMANDS) -static int linked_comm = 1; -#else -static int linked_comm = 0; -#endif - -#if defined(CONFIG_SCSI_EATA_MAX_TAGS) -static int max_queue_depth = CONFIG_SCSI_EATA_MAX_TAGS; -#else -static int max_queue_depth = MAX_CMD_PER_LUN; -#endif - -#if defined(CONFIG_ISA) -static int isa_probe = 1; -#else -static int isa_probe = 0; -#endif - -#if defined(CONFIG_EISA) -static int eisa_probe = 1; -#else -static int eisa_probe = 0; -#endif - -#if defined(CONFIG_PCI) -static int pci_probe = 1; -#else -static int pci_probe = 0; -#endif - -#define MAX_INT_PARAM 10 -#define MAX_BOOT_OPTIONS_SIZE 256 -static char boot_options[MAX_BOOT_OPTIONS_SIZE]; - -#if defined(MODULE) -#include <linux/module.h> -#include <linux/moduleparam.h> - -module_param_string(eata, boot_options, MAX_BOOT_OPTIONS_SIZE, 0); -MODULE_PARM_DESC(eata, " equivalent to the \"eata=...\" kernel boot option." - " Example: modprobe eata \"eata=0x7410,0x230,lc:y,tm:0,mq:4,ep:n\""); -MODULE_AUTHOR("Dario Ballabio"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("EATA/DMA SCSI Driver"); - -#endif - -static int eata2x_slave_configure(struct scsi_device *dev) -{ - int tqd, utqd; - char *tag_suffix, *link_suffix; - - utqd = MAX_CMD_PER_LUN; - tqd = max_queue_depth; - - if (TLDEV(dev->type) && dev->tagged_supported) { - if (tag_mode == TAG_SIMPLE) { - tag_suffix = ", simple tags"; - } else if (tag_mode == TAG_ORDERED) { - tag_suffix = ", ordered tags"; - } else { - tag_suffix = ", no tags"; - } - scsi_change_queue_depth(dev, tqd); - } else if (TLDEV(dev->type) && linked_comm) { - scsi_change_queue_depth(dev, tqd); - tag_suffix = ", untagged"; - } else { - scsi_change_queue_depth(dev, utqd); - tag_suffix = ""; - } - - if (TLDEV(dev->type) && linked_comm && dev->queue_depth > 2) - link_suffix = ", sorted"; - else if (TLDEV(dev->type)) - link_suffix = ", unsorted"; - else - link_suffix = ""; - - sdev_printk(KERN_INFO, dev, - "cmds/lun %d%s%s.\n", - dev->queue_depth, link_suffix, tag_suffix); - - return 0; -} - -static int wait_on_busy(unsigned long iobase, unsigned int loop) -{ - while (inb(iobase + REG_AUX_STATUS) & ABSY_ASSERTED) { - udelay(1L); - if (--loop == 0) - return 1; - } - return 0; -} - -static int do_dma(unsigned long iobase, unsigned long addr, unchar cmd) -{ - unsigned char *byaddr; - unsigned long devaddr; - - if (wait_on_busy(iobase, (addr ? MAXLOOP * 100 : MAXLOOP))) - return 1; - - if (addr) { - devaddr = H2DEV(addr); - byaddr = (unsigned char *)&devaddr; - outb(byaddr[3], iobase + REG_LOW); - outb(byaddr[2], iobase + REG_LM); - outb(byaddr[1], iobase + REG_MID); - outb(byaddr[0], iobase + REG_MSB); - } - - outb(cmd, iobase + REG_CMD); - return 0; -} - -static int read_pio(unsigned long iobase, ushort * start, ushort * end) -{ - unsigned int loop = MAXLOOP; - ushort *p; - - for (p = start; p <= end; p++) { - while (!(inb(iobase + REG_STATUS) & DRQ_ASSERTED)) { - udelay(1L); - if (--loop == 0) - return 1; - } - loop = MAXLOOP; - *p = REG2H(inw(iobase)); - } - - return 0; -} - -static struct pci_dev *get_pci_dev(unsigned long port_base) -{ -#if defined(CONFIG_PCI) - unsigned int addr; - struct pci_dev *dev = NULL; - - while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) { - addr = pci_resource_start(dev, 0); - -#if defined(DEBUG_PCI_DETECT) - printk("%s: get_pci_dev, bus %d, devfn 0x%x, addr 0x%x.\n", - driver_name, dev->bus->number, dev->devfn, addr); -#endif - - /* we are in so much trouble for a pci hotplug system with this driver - * anyway, so doing this at least lets people unload the driver and not - * cause memory problems, but in general this is a bad thing to do (this - * driver needs to be converted to the proper PCI api someday... */ - pci_dev_put(dev); - if (addr + PCI_BASE_ADDRESS_0 == port_base) - return dev; - } -#endif /* end CONFIG_PCI */ - return NULL; -} - -static void enable_pci_ports(void) -{ -#if defined(CONFIG_PCI) - struct pci_dev *dev = NULL; - - while ((dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) { -#if defined(DEBUG_PCI_DETECT) - printk("%s: enable_pci_ports, bus %d, devfn 0x%x.\n", - driver_name, dev->bus->number, dev->devfn); -#endif - - if (pci_enable_device(dev)) - printk - ("%s: warning, pci_enable_device failed, bus %d devfn 0x%x.\n", - driver_name, dev->bus->number, dev->devfn); - } - -#endif /* end CONFIG_PCI */ -} - -static int port_detect(unsigned long port_base, unsigned int j, - struct scsi_host_template *tpnt) -{ - unsigned char irq, dma_channel, subversion, i, is_pci = 0; - unsigned char protocol_rev; - struct eata_info info; - char *bus_type, dma_name[16]; - struct pci_dev *pdev; - /* Allowed DMA channels for ISA (0 indicates reserved) */ - unsigned char dma_channel_table[4] = { 5, 6, 7, 0 }; - struct Scsi_Host *shost; - struct hostdata *ha; - char name[16]; - - sprintf(name, "%s%d", driver_name, j); - - if (!request_region(port_base, REGION_SIZE, driver_name)) { -#if defined(DEBUG_DETECT) - printk("%s: address 0x%03lx in use, skipping probe.\n", name, - port_base); -#endif - goto fail; - } - - if (do_dma(port_base, 0, READ_CONFIG_PIO)) { -#if defined(DEBUG_DETECT) - printk("%s: detect, do_dma failed at 0x%03lx.\n", name, - port_base); -#endif - goto freelock; - } - - /* Read the info structure */ - if (read_pio(port_base, (ushort *) & info, (ushort *) & info.ipad[0])) { -#if defined(DEBUG_DETECT) - printk("%s: detect, read_pio failed at 0x%03lx.\n", name, - port_base); -#endif - goto freelock; - } - - info.data_len = DEV2H(info.data_len); - info.sign = DEV2H(info.sign); - info.cp_pad_len = DEV2H16(info.cp_pad_len); - info.cp_len = DEV2H(info.cp_len); - info.sp_len = DEV2H(info.sp_len); - info.scatt_size = DEV2H16(info.scatt_size); - info.queue_size = DEV2H16(info.queue_size); - - /* Check the controller "EATA" signature */ - if (info.sign != EATA_SIG_BE) { -#if defined(DEBUG_DETECT) - printk("%s: signature 0x%04x discarded.\n", name, info.sign); -#endif - goto freelock; - } - - if (info.data_len < EATA_2_0A_SIZE) { - printk - ("%s: config structure size (%d bytes) too short, detaching.\n", - name, info.data_len); - goto freelock; - } else if (info.data_len == EATA_2_0A_SIZE) - protocol_rev = 'A'; - else if (info.data_len == EATA_2_0B_SIZE) - protocol_rev = 'B'; - else - protocol_rev = 'C'; - - if (protocol_rev != 'A' && info.forcaddr) { - printk("%s: warning, port address has been forced.\n", name); - bus_type = "PCI"; - is_pci = 1; - subversion = ESA; - } else if (port_base > MAX_EISA_ADDR - || (protocol_rev == 'C' && info.pci)) { - bus_type = "PCI"; - is_pci = 1; - subversion = ESA; - } else if (port_base >= MIN_EISA_ADDR - || (protocol_rev == 'C' && info.eisa)) { - bus_type = "EISA"; - subversion = ESA; - } else if (protocol_rev == 'C' && !info.eisa && !info.pci) { - bus_type = "ISA"; - subversion = ISA; - } else if (port_base > MAX_ISA_ADDR) { - bus_type = "PCI"; - is_pci = 1; - subversion = ESA; - } else { - bus_type = "ISA"; - subversion = ISA; - } - - if (!info.haaval || info.ata) { - printk - ("%s: address 0x%03lx, unusable %s board (%d%d), detaching.\n", - name, port_base, bus_type, info.haaval, info.ata); - goto freelock; - } - - if (info.drqvld) { - if (subversion == ESA) - printk("%s: warning, weird %s board using DMA.\n", name, - bus_type); - - subversion = ISA; - dma_channel = dma_channel_table[3 - info.drqx]; - } else { - if (subversion == ISA) - printk("%s: warning, weird %s board not using DMA.\n", - name, bus_type); - - subversion = ESA; - dma_channel = NO_DMA; - } - - if (!info.dmasup) - printk("%s: warning, DMA protocol support not asserted.\n", - name); - - irq = info.irq; - - if (subversion == ESA && !info.irq_tr) - printk - ("%s: warning, LEVEL triggering is suggested for IRQ %u.\n", - name, irq); - - if (is_pci) { - pdev = get_pci_dev(port_base); - if (!pdev) - printk - ("%s: warning, failed to get pci_dev structure.\n", - name); - } else - pdev = NULL; - - if (pdev && (irq != pdev->irq)) { - printk("%s: IRQ %u mapped to IO-APIC IRQ %u.\n", name, irq, - pdev->irq); - irq = pdev->irq; - } - - /* Board detected, allocate its IRQ */ - if (request_irq(irq, do_interrupt_handler, - (subversion == ESA) ? IRQF_SHARED : 0, - driver_name, (void *)&sha[j])) { - printk("%s: unable to allocate IRQ %u, detaching.\n", name, - irq); - goto freelock; - } - - if (subversion == ISA && request_dma(dma_channel, driver_name)) { - printk("%s: unable to allocate DMA channel %u, detaching.\n", - name, dma_channel); - goto freeirq; - } -#if defined(FORCE_CONFIG) - { - struct eata_config *cf; - dma_addr_t cf_dma_addr; - - cf = pci_zalloc_consistent(pdev, sizeof(struct eata_config), - &cf_dma_addr); - - if (!cf) { - printk - ("%s: config, pci_alloc_consistent failed, detaching.\n", - name); - goto freedma; - } - - /* Set board configuration */ - cf->len = (ushort) H2DEV16((ushort) 510); - cf->ocena = 1; - - if (do_dma(port_base, cf_dma_addr, SET_CONFIG_DMA)) { - printk - ("%s: busy timeout sending configuration, detaching.\n", - name); - pci_free_consistent(pdev, sizeof(struct eata_config), - cf, cf_dma_addr); - goto freedma; - } - - } -#endif - - sh[j] = shost = scsi_register(tpnt, sizeof(struct hostdata)); - if (shost == NULL) { - printk("%s: unable to register host, detaching.\n", name); - goto freedma; - } - - shost->io_port = port_base; - shost->unique_id = port_base; - shost->n_io_port = REGION_SIZE; - shost->dma_channel = dma_channel; - shost->irq = irq; - shost->sg_tablesize = (ushort) info.scatt_size; - shost->this_id = (ushort) info.host_addr[3]; - shost->can_queue = (ushort) info.queue_size; - shost->cmd_per_lun = MAX_CMD_PER_LUN; - - ha = (struct hostdata *)shost->hostdata; - - memset(ha, 0, sizeof(struct hostdata)); - ha->subversion = subversion; - ha->protocol_rev = protocol_rev; - ha->is_pci = is_pci; - ha->pdev = pdev; - ha->board_number = j; - - if (ha->subversion == ESA) - shost->unchecked_isa_dma = 0; - else { - unsigned long flags; - shost->unchecked_isa_dma = 1; - - flags = claim_dma_lock(); - disable_dma(dma_channel); - clear_dma_ff(dma_channel); - set_dma_mode(dma_channel, DMA_MODE_CASCADE); - enable_dma(dma_channel); - release_dma_lock(flags); - - } - - strcpy(ha->board_name, name); - - /* DPT PM2012 does not allow to detect sg_tablesize correctly */ - if (shost->sg_tablesize > MAX_SGLIST || shost->sg_tablesize < 2) { - printk("%s: detect, wrong n. of SG lists %d, fixed.\n", - ha->board_name, shost->sg_tablesize); - shost->sg_tablesize = MAX_SGLIST; - } - - /* DPT PM2012 does not allow to detect can_queue correctly */ - if (shost->can_queue > MAX_MAILBOXES || shost->can_queue < 2) { - printk("%s: detect, wrong n. of mbox %d, fixed.\n", - ha->board_name, shost->can_queue); - shost->can_queue = MAX_MAILBOXES; - } - - if (protocol_rev != 'A') { - if (info.max_chan > 0 && info.max_chan < MAX_CHANNEL) - shost->max_channel = info.max_chan; - - if (info.max_id > 7 && info.max_id < MAX_TARGET) - shost->max_id = info.max_id + 1; - - if (info.large_sg && shost->sg_tablesize == MAX_SGLIST) - shost->sg_tablesize = MAX_LARGE_SGLIST; - } - - if (protocol_rev == 'C') { - if (info.max_lun > 7 && info.max_lun < MAX_LUN) - shost->max_lun = info.max_lun + 1; - } - - if (dma_channel == NO_DMA) - sprintf(dma_name, "%s", "BMST"); - else - sprintf(dma_name, "DMA %u", dma_channel); - - for (i = 0; i < shost->can_queue; i++) - ha->cp[i].cp_dma_addr = pci_map_single(ha->pdev, - &ha->cp[i], - sizeof(struct mscp), - PCI_DMA_BIDIRECTIONAL); - - for (i = 0; i < shost->can_queue; i++) { - size_t sz = shost->sg_tablesize *sizeof(struct sg_list); - gfp_t gfp_mask = (shost->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC; - ha->cp[i].sglist = kmalloc(sz, gfp_mask); - if (!ha->cp[i].sglist) { - printk - ("%s: kmalloc SGlist failed, mbox %d, detaching.\n", - ha->board_name, i); - goto release; - } - } - - if (!(ha->sp_cpu_addr = pci_alloc_consistent(ha->pdev, - sizeof(struct mssp), - &ha->sp_dma_addr))) { - printk("%s: pci_alloc_consistent failed, detaching.\n", ha->board_name); - goto release; - } - - if (max_queue_depth > MAX_TAGGED_CMD_PER_LUN) - max_queue_depth = MAX_TAGGED_CMD_PER_LUN; - - if (max_queue_depth < MAX_CMD_PER_LUN) - max_queue_depth = MAX_CMD_PER_LUN; - - if (tag_mode != TAG_DISABLED && tag_mode != TAG_SIMPLE) - tag_mode = TAG_ORDERED; - - if (j == 0) { - printk - ("EATA/DMA 2.0x: Copyright (C) 1994-2003 Dario Ballabio.\n"); - printk - ("%s config options -> tm:%d, lc:%c, mq:%d, rs:%c, et:%c, " - "ip:%c, ep:%c, pp:%c.\n", driver_name, tag_mode, - YESNO(linked_comm), max_queue_depth, YESNO(rev_scan), - YESNO(ext_tran), YESNO(isa_probe), YESNO(eisa_probe), - YESNO(pci_probe)); - } - - printk("%s: 2.0%c, %s 0x%03lx, IRQ %u, %s, SG %d, MB %d.\n", - ha->board_name, ha->protocol_rev, bus_type, - (unsigned long)shost->io_port, shost->irq, dma_name, - shost->sg_tablesize, shost->can_queue); - - if (shost->max_id > 8 || shost->max_lun > 8) - printk - ("%s: wide SCSI support enabled, max_id %u, max_lun %llu.\n", - ha->board_name, shost->max_id, shost->max_lun); - - for (i = 0; i <= shost->max_channel; i++) - printk("%s: SCSI channel %u enabled, host target ID %d.\n", - ha->board_name, i, info.host_addr[3 - i]); - -#if defined(DEBUG_DETECT) - printk("%s: Vers. 0x%x, ocs %u, tar %u, trnxfr %u, more %u, SYNC 0x%x, " - "sec. %u, infol %d, cpl %d spl %d.\n", name, info.version, - info.ocsena, info.tarsup, info.trnxfr, info.morsup, info.sync, - info.second, info.data_len, info.cp_len, info.sp_len); - - if (protocol_rev == 'B' || protocol_rev == 'C') - printk("%s: isaena %u, forcaddr %u, max_id %u, max_chan %u, " - "large_sg %u, res1 %u.\n", name, info.isaena, - info.forcaddr, info.max_id, info.max_chan, info.large_sg, - info.res1); - - if (protocol_rev == 'C') - printk("%s: max_lun %u, m1 %u, idquest %u, pci %u, eisa %u, " - "raidnum %u.\n", name, info.max_lun, info.m1, - info.idquest, info.pci, info.eisa, info.raidnum); -#endif - - if (ha->pdev) { - pci_set_master(ha->pdev); - if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32))) - printk("%s: warning, pci_set_dma_mask failed.\n", - ha->board_name); - } - - return 1; - - freedma: - if (subversion == ISA) - free_dma(dma_channel); - freeirq: - free_irq(irq, &sha[j]); - freelock: - release_region(port_base, REGION_SIZE); - fail: - return 0; - - release: - eata2x_release(shost); - return 0; -} - -static void internal_setup(char *str, int *ints) -{ - int i, argc = ints[0]; - char *cur = str, *pc; - - if (argc > 0) { - if (argc > MAX_INT_PARAM) - argc = MAX_INT_PARAM; - - for (i = 0; i < argc; i++) - io_port[i] = ints[i + 1]; - - io_port[i] = 0; - setup_done = 1; - } - - while (cur && (pc = strchr(cur, ':'))) { - int val = 0, c = *++pc; - - if (c == 'n' || c == 'N') - val = 0; - else if (c == 'y' || c == 'Y') - val = 1; - else - val = (int)simple_strtoul(pc, NULL, 0); - - if (!strncmp(cur, "lc:", 3)) - linked_comm = val; - else if (!strncmp(cur, "tm:", 3)) - tag_mode = val; - else if (!strncmp(cur, "tc:", 3)) - tag_mode = val; - else if (!strncmp(cur, "mq:", 3)) - max_queue_depth = val; - else if (!strncmp(cur, "ls:", 3)) - link_statistics = val; - else if (!strncmp(cur, "et:", 3)) - ext_tran = val; - else if (!strncmp(cur, "rs:", 3)) - rev_scan = val; - else if (!strncmp(cur, "ip:", 3)) - isa_probe = val; - else if (!strncmp(cur, "ep:", 3)) - eisa_probe = val; - else if (!strncmp(cur, "pp:", 3)) - pci_probe = val; - - if ((cur = strchr(cur, ','))) - ++cur; - } - - return; -} - -static int option_setup(char *str) -{ - int ints[MAX_INT_PARAM]; - char *cur = str; - int i = 1; - - while (cur && isdigit(*cur) && i < MAX_INT_PARAM) { - ints[i++] = simple_strtoul(cur, NULL, 0); - - if ((cur = strchr(cur, ',')) != NULL) - cur++; - } - - ints[0] = i - 1; - internal_setup(cur, ints); - return 1; -} - -static void add_pci_ports(void) -{ -#if defined(CONFIG_PCI) - unsigned int addr, k; - struct pci_dev *dev = NULL; - - for (k = 0; k < MAX_PCI; k++) { - - if (!(dev = pci_get_class(PCI_CLASS_STORAGE_SCSI << 8, dev))) - break; - - if (pci_enable_device(dev)) { -#if defined(DEBUG_PCI_DETECT) - printk - ("%s: detect, bus %d, devfn 0x%x, pci_enable_device failed.\n", - driver_name, dev->bus->number, dev->devfn); -#endif - - continue; - } - - addr = pci_resource_start(dev, 0); - -#if defined(DEBUG_PCI_DETECT) - printk("%s: detect, seq. %d, bus %d, devfn 0x%x, addr 0x%x.\n", - driver_name, k, dev->bus->number, dev->devfn, addr); -#endif - - /* Order addresses according to rev_scan value */ - io_port[MAX_INT_PARAM + (rev_scan ? (MAX_PCI - k) : (1 + k))] = - addr + PCI_BASE_ADDRESS_0; - } - - pci_dev_put(dev); -#endif /* end CONFIG_PCI */ -} - -static int eata2x_detect(struct scsi_host_template *tpnt) -{ - unsigned int j = 0, k; - - tpnt->proc_name = "eata2x"; - - if (strlen(boot_options)) - option_setup(boot_options); - -#if defined(MODULE) - /* io_port could have been modified when loading as a module */ - if (io_port[0] != SKIP) { - setup_done = 1; - io_port[MAX_INT_PARAM] = 0; - } -#endif - - for (k = MAX_INT_PARAM; io_port[k]; k++) - if (io_port[k] == SKIP) - continue; - else if (io_port[k] <= MAX_ISA_ADDR) { - if (!isa_probe) - io_port[k] = SKIP; - } else if (io_port[k] >= MIN_EISA_ADDR - && io_port[k] <= MAX_EISA_ADDR) { - if (!eisa_probe) - io_port[k] = SKIP; - } - - if (pci_probe) { - if (!setup_done) - add_pci_ports(); - else - enable_pci_ports(); - } - - for (k = 0; io_port[k]; k++) { - - if (io_port[k] == SKIP) - continue; - - if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt)) - j++; - } - - num_boards = j; - return j; -} - -static void map_dma(unsigned int i, struct hostdata *ha) -{ - unsigned int k, pci_dir; - int count; - struct scatterlist *sg; - struct mscp *cpp; - struct scsi_cmnd *SCpnt; - - cpp = &ha->cp[i]; - SCpnt = cpp->SCpnt; - pci_dir = SCpnt->sc_data_direction; - - if (SCpnt->sense_buffer) - cpp->sense_addr = - H2DEV(pci_map_single(ha->pdev, SCpnt->sense_buffer, - SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE)); - - cpp->sense_len = SCSI_SENSE_BUFFERSIZE; - - if (!scsi_sg_count(SCpnt)) { - cpp->data_len = 0; - return; - } - - count = pci_map_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), - pci_dir); - BUG_ON(!count); - - scsi_for_each_sg(SCpnt, sg, count, k) { - cpp->sglist[k].address = H2DEV(sg_dma_address(sg)); - cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(sg)); - } - - cpp->sg = 1; - cpp->data_address = H2DEV(pci_map_single(ha->pdev, cpp->sglist, - scsi_sg_count(SCpnt) * - sizeof(struct sg_list), - pci_dir)); - cpp->data_len = H2DEV((scsi_sg_count(SCpnt) * sizeof(struct sg_list))); -} - -static void unmap_dma(unsigned int i, struct hostdata *ha) -{ - unsigned int pci_dir; - struct mscp *cpp; - struct scsi_cmnd *SCpnt; - - cpp = &ha->cp[i]; - SCpnt = cpp->SCpnt; - pci_dir = SCpnt->sc_data_direction; - - if (DEV2H(cpp->sense_addr)) - pci_unmap_single(ha->pdev, DEV2H(cpp->sense_addr), - DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE); - - if (scsi_sg_count(SCpnt)) - pci_unmap_sg(ha->pdev, scsi_sglist(SCpnt), scsi_sg_count(SCpnt), - pci_dir); - - if (!DEV2H(cpp->data_len)) - pci_dir = PCI_DMA_BIDIRECTIONAL; - - if (DEV2H(cpp->data_address)) - pci_unmap_single(ha->pdev, DEV2H(cpp->data_address), - DEV2H(cpp->data_len), pci_dir); -} - -static void sync_dma(unsigned int i, struct hostdata *ha) -{ - unsigned int pci_dir; - struct mscp *cpp; - struct scsi_cmnd *SCpnt; - - cpp = &ha->cp[i]; - SCpnt = cpp->SCpnt; - pci_dir = SCpnt->sc_data_direction; - - if (DEV2H(cpp->sense_addr)) - pci_dma_sync_single_for_cpu(ha->pdev, DEV2H(cpp->sense_addr), - DEV2H(cpp->sense_len), - PCI_DMA_FROMDEVICE); - - if (scsi_sg_count(SCpnt)) - pci_dma_sync_sg_for_cpu(ha->pdev, scsi_sglist(SCpnt), - scsi_sg_count(SCpnt), pci_dir); - - if (!DEV2H(cpp->data_len)) - pci_dir = PCI_DMA_BIDIRECTIONAL; - - if (DEV2H(cpp->data_address)) - pci_dma_sync_single_for_cpu(ha->pdev, - DEV2H(cpp->data_address), - DEV2H(cpp->data_len), pci_dir); -} - -static void scsi_to_dev_dir(unsigned int i, struct hostdata *ha) -{ - unsigned int k; - - static const unsigned char data_out_cmds[] = { - 0x0a, 0x2a, 0x15, 0x55, 0x04, 0x07, 0x18, 0x1d, 0x24, 0x2e, - 0x30, 0x31, 0x32, 0x38, 0x39, 0x3a, 0x3b, 0x3d, 0x3f, 0x40, - 0x41, 0x4c, 0xaa, 0xae, 0xb0, 0xb1, 0xb2, 0xb6, 0xea, 0x1b, 0x5d - }; - - static const unsigned char data_none_cmds[] = { - 0x01, 0x0b, 0x10, 0x11, 0x13, 0x16, 0x17, 0x19, 0x2b, 0x1e, - 0x2c, 0xac, 0x2f, 0xaf, 0x33, 0xb3, 0x35, 0x36, 0x45, 0x47, - 0x48, 0x49, 0xa9, 0x4b, 0xa5, 0xa6, 0xb5, 0x00 - }; - - struct mscp *cpp; - struct scsi_cmnd *SCpnt; - - cpp = &ha->cp[i]; - SCpnt = cpp->SCpnt; - - if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) { - cpp->din = 1; - cpp->dout = 0; - return; - } else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) { - cpp->din = 0; - cpp->dout = 1; - return; - } else if (SCpnt->sc_data_direction == DMA_NONE) { - cpp->din = 0; - cpp->dout = 0; - return; - } - - if (SCpnt->sc_data_direction != DMA_BIDIRECTIONAL) - panic("%s: qcomm, invalid SCpnt->sc_data_direction.\n", - ha->board_name); - - for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++) - if (SCpnt->cmnd[0] == data_out_cmds[k]) { - cpp->dout = 1; - break; - } - - if ((cpp->din = !cpp->dout)) - for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++) - if (SCpnt->cmnd[0] == data_none_cmds[k]) { - cpp->din = 0; - break; - } - -} - -static int eata2x_queuecommand_lck(struct scsi_cmnd *SCpnt, - void (*done) (struct scsi_cmnd *)) -{ - struct Scsi_Host *shost = SCpnt->device->host; - struct hostdata *ha = (struct hostdata *)shost->hostdata; - unsigned int i, k; - struct mscp *cpp; - - if (SCpnt->host_scribble) - panic("%s: qcomm, SCpnt %p already active.\n", - ha->board_name, SCpnt); - - /* i is the mailbox number, look for the first free mailbox - starting from last_cp_used */ - i = ha->last_cp_used + 1; - - for (k = 0; k < shost->can_queue; k++, i++) { - if (i >= shost->can_queue) - i = 0; - if (ha->cp_stat[i] == FREE) { - ha->last_cp_used = i; - break; - } - } - - if (k == shost->can_queue) { - printk("%s: qcomm, no free mailbox.\n", ha->board_name); - return 1; - } - - /* Set pointer to control packet structure */ - cpp = &ha->cp[i]; - - memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE); - - /* Set pointer to status packet structure, Big Endian format */ - cpp->sp_dma_addr = H2DEV(ha->sp_dma_addr); - - SCpnt->scsi_done = done; - cpp->cpp_index = i; - SCpnt->host_scribble = (unsigned char *)&cpp->cpp_index; - - if (do_trace) - scmd_printk(KERN_INFO, SCpnt, - "qcomm, mbox %d.\n", i); - - cpp->reqsen = 1; - cpp->dispri = 1; -#if 0 - if (SCpnt->device->type == TYPE_TAPE) - cpp->hbaci = 1; -#endif - cpp->one = 1; - cpp->channel = SCpnt->device->channel; - cpp->target = SCpnt->device->id; - cpp->lun = SCpnt->device->lun; - cpp->SCpnt = SCpnt; - memcpy(cpp->cdb, SCpnt->cmnd, SCpnt->cmd_len); - - /* Use data transfer direction SCpnt->sc_data_direction */ - scsi_to_dev_dir(i, ha); - - /* Map DMA buffers and SG list */ - map_dma(i, ha); - - if (linked_comm && SCpnt->device->queue_depth > 2 - && TLDEV(SCpnt->device->type)) { - ha->cp_stat[i] = READY; - flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), ha, 0); - return 0; - } - - /* Send control packet to the board */ - if (do_dma(shost->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) { - unmap_dma(i, ha); - SCpnt->host_scribble = NULL; - scmd_printk(KERN_INFO, SCpnt, "qcomm, adapter busy.\n"); - return 1; - } - - ha->cp_stat[i] = IN_USE; - return 0; -} - -static DEF_SCSI_QCMD(eata2x_queuecommand) - -static int eata2x_eh_abort(struct scsi_cmnd *SCarg) -{ - struct Scsi_Host *shost = SCarg->device->host; - struct hostdata *ha = (struct hostdata *)shost->hostdata; - unsigned int i; - - if (SCarg->host_scribble == NULL) { - scmd_printk(KERN_INFO, SCarg, "abort, cmd inactive.\n"); - return SUCCESS; - } - - i = *(unsigned int *)SCarg->host_scribble; - scmd_printk(KERN_WARNING, SCarg, "abort, mbox %d.\n", i); - - if (i >= shost->can_queue) - panic("%s: abort, invalid SCarg->host_scribble.\n", ha->board_name); - - if (wait_on_busy(shost->io_port, MAXLOOP)) { - printk("%s: abort, timeout error.\n", ha->board_name); - return FAILED; - } - - if (ha->cp_stat[i] == FREE) { - printk("%s: abort, mbox %d is free.\n", ha->board_name, i); - return SUCCESS; - } - - if (ha->cp_stat[i] == IN_USE) { - printk("%s: abort, mbox %d is in use.\n", ha->board_name, i); - - if (SCarg != ha->cp[i].SCpnt) - panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n", - ha->board_name, i, SCarg, ha->cp[i].SCpnt); - - if (inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED) - printk("%s: abort, mbox %d, interrupt pending.\n", - ha->board_name, i); - - return FAILED; - } - - if (ha->cp_stat[i] == IN_RESET) { - printk("%s: abort, mbox %d is in reset.\n", ha->board_name, i); - return FAILED; - } - - if (ha->cp_stat[i] == LOCKED) { - printk("%s: abort, mbox %d is locked.\n", ha->board_name, i); - return SUCCESS; - } - - if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) { - unmap_dma(i, ha); - SCarg->result = DID_ABORT << 16; - SCarg->host_scribble = NULL; - ha->cp_stat[i] = FREE; - printk("%s, abort, mbox %d ready, DID_ABORT, done.\n", - ha->board_name, i); - SCarg->scsi_done(SCarg); - return SUCCESS; - } - - panic("%s: abort, mbox %d, invalid cp_stat.\n", ha->board_name, i); -} - -static int eata2x_eh_host_reset(struct scsi_cmnd *SCarg) -{ - unsigned int i, time, k, c, limit = 0; - struct scsi_cmnd *SCpnt; - struct Scsi_Host *shost = SCarg->device->host; - struct hostdata *ha = (struct hostdata *)shost->hostdata; - - scmd_printk(KERN_INFO, SCarg, "reset, enter.\n"); - - spin_lock_irq(shost->host_lock); - - if (SCarg->host_scribble == NULL) - printk("%s: reset, inactive.\n", ha->board_name); - - if (ha->in_reset) { - printk("%s: reset, exit, already in reset.\n", ha->board_name); - spin_unlock_irq(shost->host_lock); - return FAILED; - } - - if (wait_on_busy(shost->io_port, MAXLOOP)) { - printk("%s: reset, exit, timeout error.\n", ha->board_name); - spin_unlock_irq(shost->host_lock); - return FAILED; - } - - ha->retries = 0; - - for (c = 0; c <= shost->max_channel; c++) - for (k = 0; k < shost->max_id; k++) { - ha->target_redo[k][c] = 1; - ha->target_to[k][c] = 0; - } - - for (i = 0; i < shost->can_queue; i++) { - - if (ha->cp_stat[i] == FREE) - continue; - - if (ha->cp_stat[i] == LOCKED) { - ha->cp_stat[i] = FREE; - printk("%s: reset, locked mbox %d forced free.\n", - ha->board_name, i); - continue; - } - - if (!(SCpnt = ha->cp[i].SCpnt)) - panic("%s: reset, mbox %d, SCpnt == NULL.\n", ha->board_name, i); - - if (ha->cp_stat[i] == READY || ha->cp_stat[i] == ABORTING) { - ha->cp_stat[i] = ABORTING; - printk("%s: reset, mbox %d aborting.\n", - ha->board_name, i); - } - - else { - ha->cp_stat[i] = IN_RESET; - printk("%s: reset, mbox %d in reset.\n", - ha->board_name, i); - } - - if (SCpnt->host_scribble == NULL) - panic("%s: reset, mbox %d, garbled SCpnt.\n", ha->board_name, i); - - if (*(unsigned int *)SCpnt->host_scribble != i) - panic("%s: reset, mbox %d, index mismatch.\n", ha->board_name, i); - - if (SCpnt->scsi_done == NULL) - panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", - ha->board_name, i); - } - - if (do_dma(shost->io_port, 0, RESET_PIO)) { - printk("%s: reset, cannot reset, timeout error.\n", ha->board_name); - spin_unlock_irq(shost->host_lock); - return FAILED; - } - - printk("%s: reset, board reset done, enabling interrupts.\n", ha->board_name); - -#if defined(DEBUG_RESET) - do_trace = 1; -#endif - - ha->in_reset = 1; - - spin_unlock_irq(shost->host_lock); - - /* FIXME: use a sleep instead */ - time = jiffies; - while ((jiffies - time) < (10 * HZ) && limit++ < 200000) - udelay(100L); - - spin_lock_irq(shost->host_lock); - - printk("%s: reset, interrupts disabled, loops %d.\n", ha->board_name, limit); - - for (i = 0; i < shost->can_queue; i++) { - - if (ha->cp_stat[i] == IN_RESET) { - SCpnt = ha->cp[i].SCpnt; - unmap_dma(i, ha); - SCpnt->result = DID_RESET << 16; - SCpnt->host_scribble = NULL; - - /* This mailbox is still waiting for its interrupt */ - ha->cp_stat[i] = LOCKED; - - printk - ("%s, reset, mbox %d locked, DID_RESET, done.\n", - ha->board_name, i); - } - - else if (ha->cp_stat[i] == ABORTING) { - SCpnt = ha->cp[i].SCpnt; - unmap_dma(i, ha); - SCpnt->result = DID_RESET << 16; - SCpnt->host_scribble = NULL; - - /* This mailbox was never queued to the adapter */ - ha->cp_stat[i] = FREE; - - printk - ("%s, reset, mbox %d aborting, DID_RESET, done.\n", - ha->board_name, i); - } - - else - /* Any other mailbox has already been set free by interrupt */ - continue; - - SCpnt->scsi_done(SCpnt); - } - - ha->in_reset = 0; - do_trace = 0; - - printk("%s: reset, exit.\n", ha->board_name); - - spin_unlock_irq(shost->host_lock); - return SUCCESS; -} - -int eata2x_bios_param(struct scsi_device *sdev, struct block_device *bdev, - sector_t capacity, int *dkinfo) -{ - unsigned int size = capacity; - - if (ext_tran || (scsicam_bios_param(bdev, capacity, dkinfo) < 0)) { - dkinfo[0] = 255; - dkinfo[1] = 63; - dkinfo[2] = size / (dkinfo[0] * dkinfo[1]); - } -#if defined (DEBUG_GEOMETRY) - printk("%s: bios_param, head=%d, sec=%d, cyl=%d.\n", driver_name, - dkinfo[0], dkinfo[1], dkinfo[2]); -#endif - - return 0; -} - -static void sort(unsigned long sk[], unsigned int da[], unsigned int n, - unsigned int rev) -{ - unsigned int i, j, k, y; - unsigned long x; - - for (i = 0; i < n - 1; i++) { - k = i; - - for (j = k + 1; j < n; j++) - if (rev) { - if (sk[j] > sk[k]) - k = j; - } else { - if (sk[j] < sk[k]) - k = j; - } - - if (k != i) { - x = sk[k]; - sk[k] = sk[i]; - sk[i] = x; - y = da[k]; - da[k] = da[i]; - da[i] = y; - } - } - - return; -} - -static int reorder(struct hostdata *ha, unsigned long cursec, - unsigned int ihdlr, unsigned int il[], unsigned int n_ready) -{ - struct scsi_cmnd *SCpnt; - struct mscp *cpp; - unsigned int k, n; - unsigned int rev = 0, s = 1, r = 1; - unsigned int input_only = 1, overlap = 0; - unsigned long sl[n_ready], pl[n_ready], ll[n_ready]; - unsigned long maxsec = 0, minsec = ULONG_MAX, seek = 0, iseek = 0; - unsigned long ioseek = 0; - - static unsigned int flushcount = 0, batchcount = 0, sortcount = 0; - static unsigned int readycount = 0, ovlcount = 0, inputcount = 0; - static unsigned int readysorted = 0, revcount = 0; - static unsigned long seeksorted = 0, seeknosort = 0; - - if (link_statistics && !(++flushcount % link_statistics)) - printk("fc %d bc %d ic %d oc %d rc %d rs %d sc %d re %d" - " av %ldK as %ldK.\n", flushcount, batchcount, - inputcount, ovlcount, readycount, readysorted, sortcount, - revcount, seeknosort / (readycount + 1), - seeksorted / (readycount + 1)); - - if (n_ready <= 1) - return 0; - - for (n = 0; n < n_ready; n++) { - k = il[n]; - cpp = &ha->cp[k]; - SCpnt = cpp->SCpnt; - - if (!cpp->din) - input_only = 0; - - if (blk_rq_pos(SCpnt->request) < minsec) - minsec = blk_rq_pos(SCpnt->request); - if (blk_rq_pos(SCpnt->request) > maxsec) - maxsec = blk_rq_pos(SCpnt->request); - - sl[n] = blk_rq_pos(SCpnt->request); - ioseek += blk_rq_sectors(SCpnt->request); - - if (!n) - continue; - - if (sl[n] < sl[n - 1]) - s = 0; - if (sl[n] > sl[n - 1]) - r = 0; - - if (link_statistics) { - if (sl[n] > sl[n - 1]) - seek += sl[n] - sl[n - 1]; - else - seek += sl[n - 1] - sl[n]; - } - - } - - if (link_statistics) { - if (cursec > sl[0]) - seek += cursec - sl[0]; - else - seek += sl[0] - cursec; - } - - if (cursec > ((maxsec + minsec) / 2)) - rev = 1; - - if (ioseek > ((maxsec - minsec) / 2)) - rev = 0; - - if (!((rev && r) || (!rev && s))) - sort(sl, il, n_ready, rev); - - if (!input_only) - for (n = 0; n < n_ready; n++) { - k = il[n]; - cpp = &ha->cp[k]; - SCpnt = cpp->SCpnt; - ll[n] = blk_rq_sectors(SCpnt->request); - pl[n] = SCpnt->serial_number; - - if (!n) - continue; - - if ((sl[n] == sl[n - 1]) - || (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n])) - || (rev && ((sl[n] + ll[n]) > sl[n - 1]))) - overlap = 1; - } - - if (overlap) - sort(pl, il, n_ready, 0); - - if (link_statistics) { - if (cursec > sl[0]) - iseek = cursec - sl[0]; - else - iseek = sl[0] - cursec; - batchcount++; - readycount += n_ready; - seeknosort += seek / 1024; - if (input_only) - inputcount++; - if (overlap) { - ovlcount++; - seeksorted += iseek / 1024; - } else - seeksorted += (iseek + maxsec - minsec) / 1024; - if (rev && !r) { - revcount++; - readysorted += n_ready; - } - if (!rev && !s) { - sortcount++; - readysorted += n_ready; - } - } -#if defined(DEBUG_LINKED_COMMANDS) - if (link_statistics && (overlap || !(flushcount % link_statistics))) - for (n = 0; n < n_ready; n++) { - k = il[n]; - cpp = &ha->cp[k]; - SCpnt = cpp->SCpnt; - scmd_printk(KERN_INFO, SCpnt, - "%s mb %d fc %d nr %d sec %ld ns %u" - " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n", - (ihdlr ? "ihdlr" : "qcomm"), - k, flushcount, - n_ready, blk_rq_pos(SCpnt->request), - blk_rq_sectors(SCpnt->request), cursec, YESNO(s), - YESNO(r), YESNO(rev), YESNO(input_only), - YESNO(overlap), cpp->din); - } -#endif - return overlap; -} - -static void flush_dev(struct scsi_device *dev, unsigned long cursec, - struct hostdata *ha, unsigned int ihdlr) -{ - struct scsi_cmnd *SCpnt; - struct mscp *cpp; - unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES]; - - for (k = 0; k < dev->host->can_queue; k++) { - - if (ha->cp_stat[k] != READY && ha->cp_stat[k] != IN_USE) - continue; - - cpp = &ha->cp[k]; - SCpnt = cpp->SCpnt; - - if (SCpnt->device != dev) - continue; - - if (ha->cp_stat[k] == IN_USE) - return; - - il[n_ready++] = k; - } - - if (reorder(ha, cursec, ihdlr, il, n_ready)) - n_ready = 1; - - for (n = 0; n < n_ready; n++) { - k = il[n]; - cpp = &ha->cp[k]; - SCpnt = cpp->SCpnt; - - if (do_dma(dev->host->io_port, cpp->cp_dma_addr, SEND_CP_DMA)) { - scmd_printk(KERN_INFO, SCpnt, - "%s, mbox %d, adapter" - " busy, will abort.\n", - (ihdlr ? "ihdlr" : "qcomm"), - k); - ha->cp_stat[k] = ABORTING; - continue; - } - - ha->cp_stat[k] = IN_USE; - } -} - -static irqreturn_t ihdlr(struct Scsi_Host *shost) -{ - struct scsi_cmnd *SCpnt; - unsigned int i, k, c, status, tstatus, reg; - struct mssp *spp; - struct mscp *cpp; - struct hostdata *ha = (struct hostdata *)shost->hostdata; - int irq = shost->irq; - - /* Check if this board need to be serviced */ - if (!(inb(shost->io_port + REG_AUX_STATUS) & IRQ_ASSERTED)) - goto none; - - ha->iocount++; - - if (do_trace) - printk("%s: ihdlr, enter, irq %d, count %d.\n", ha->board_name, irq, - ha->iocount); - - /* Check if this board is still busy */ - if (wait_on_busy(shost->io_port, 20 * MAXLOOP)) { - reg = inb(shost->io_port + REG_STATUS); - printk - ("%s: ihdlr, busy timeout error, irq %d, reg 0x%x, count %d.\n", - ha->board_name, irq, reg, ha->iocount); - goto none; - } - - spp = &ha->sp; - - /* Make a local copy just before clearing the interrupt indication */ - memcpy(spp, ha->sp_cpu_addr, sizeof(struct mssp)); - - /* Clear the completion flag and cp pointer on the dynamic copy of sp */ - memset(ha->sp_cpu_addr, 0, sizeof(struct mssp)); - - /* Read the status register to clear the interrupt indication */ - reg = inb(shost->io_port + REG_STATUS); - -#if defined (DEBUG_INTERRUPT) - { - unsigned char *bytesp; - int cnt; - bytesp = (unsigned char *)spp; - if (ha->iocount < 200) { - printk("sp[] ="); - for (cnt = 0; cnt < 15; cnt++) - printk(" 0x%x", bytesp[cnt]); - printk("\n"); - } - } -#endif - - /* Reject any sp with supspect data */ - if (spp->eoc == 0 && ha->iocount > 1) - printk - ("%s: ihdlr, spp->eoc == 0, irq %d, reg 0x%x, count %d.\n", - ha->board_name, irq, reg, ha->iocount); - if (spp->cpp_index < 0 || spp->cpp_index >= shost->can_queue) - printk - ("%s: ihdlr, bad spp->cpp_index %d, irq %d, reg 0x%x, count %d.\n", - ha->board_name, spp->cpp_index, irq, reg, ha->iocount); - if (spp->eoc == 0 || spp->cpp_index < 0 - || spp->cpp_index >= shost->can_queue) - goto handled; - - /* Find the mailbox to be serviced on this board */ - i = spp->cpp_index; - - cpp = &(ha->cp[i]); - -#if defined(DEBUG_GENERATE_ABORTS) - if ((ha->iocount > 500) && ((ha->iocount % 500) < 3)) - goto handled; -#endif - - if (ha->cp_stat[i] == IGNORE) { - ha->cp_stat[i] = FREE; - goto handled; - } else if (ha->cp_stat[i] == LOCKED) { - ha->cp_stat[i] = FREE; - printk("%s: ihdlr, mbox %d unlocked, count %d.\n", ha->board_name, i, - ha->iocount); - goto handled; - } else if (ha->cp_stat[i] == FREE) { - printk("%s: ihdlr, mbox %d is free, count %d.\n", ha->board_name, i, - ha->iocount); - goto handled; - } else if (ha->cp_stat[i] == IN_RESET) - printk("%s: ihdlr, mbox %d is in reset.\n", ha->board_name, i); - else if (ha->cp_stat[i] != IN_USE) - panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n", - ha->board_name, i, ha->cp_stat[i]); - - ha->cp_stat[i] = FREE; - SCpnt = cpp->SCpnt; - - if (SCpnt == NULL) - panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", ha->board_name, i); - - if (SCpnt->host_scribble == NULL) - panic("%s: ihdlr, mbox %d, SCpnt %p garbled.\n", ha->board_name, - i, SCpnt); - - if (*(unsigned int *)SCpnt->host_scribble != i) - panic("%s: ihdlr, mbox %d, index mismatch %d.\n", - ha->board_name, i, - *(unsigned int *)SCpnt->host_scribble); - - sync_dma(i, ha); - - if (linked_comm && SCpnt->device->queue_depth > 2 - && TLDEV(SCpnt->device->type)) - flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), ha, 1); - - tstatus = status_byte(spp->target_status); - -#if defined(DEBUG_GENERATE_ERRORS) - if ((ha->iocount > 500) && ((ha->iocount % 200) < 2)) - spp->adapter_status = 0x01; -#endif - - switch (spp->adapter_status) { - case ASOK: /* status OK */ - - /* Forces a reset if a disk drive keeps returning BUSY */ - if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE) - status = DID_ERROR << 16; - - /* If there was a bus reset, redo operation on each target */ - else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK - && ha->target_redo[SCpnt->device->id][SCpnt-> - device-> - channel]) - status = DID_BUS_BUSY << 16; - - /* Works around a flaw in scsi.c */ - else if (tstatus == CHECK_CONDITION - && SCpnt->device->type == TYPE_DISK - && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR) - status = DID_BUS_BUSY << 16; - - else - status = DID_OK << 16; - - if (tstatus == GOOD) - ha->target_redo[SCpnt->device->id][SCpnt->device-> - channel] = 0; - - if (spp->target_status && SCpnt->device->type == TYPE_DISK && - (!(tstatus == CHECK_CONDITION && ha->iocount <= 1000 && - (SCpnt->sense_buffer[2] & 0xf) == NOT_READY))) - printk("%s: ihdlr, target %d.%d:%d, " - "target_status 0x%x, sense key 0x%x.\n", - ha->board_name, - SCpnt->device->channel, SCpnt->device->id, - (u8)SCpnt->device->lun, - spp->target_status, SCpnt->sense_buffer[2]); - - ha->target_to[SCpnt->device->id][SCpnt->device->channel] = 0; - - if (ha->last_retried_pid == SCpnt->serial_number) - ha->retries = 0; - - break; - case ASST: /* Selection Time Out */ - case 0x02: /* Command Time Out */ - - if (ha->target_to[SCpnt->device->id][SCpnt->device->channel] > 1) - status = DID_ERROR << 16; - else { - status = DID_TIME_OUT << 16; - ha->target_to[SCpnt->device->id][SCpnt->device-> - channel]++; - } - - break; - - /* Perform a limited number of internal retries */ - case 0x03: /* SCSI Bus Reset Received */ - case 0x04: /* Initial Controller Power-up */ - - for (c = 0; c <= shost->max_channel; c++) - for (k = 0; k < shost->max_id; k++) - ha->target_redo[k][c] = 1; - - if (SCpnt->device->type != TYPE_TAPE - && ha->retries < MAX_INTERNAL_RETRIES) { - -#if defined(DID_SOFT_ERROR) - status = DID_SOFT_ERROR << 16; -#else - status = DID_BUS_BUSY << 16; -#endif - - ha->retries++; - ha->last_retried_pid = SCpnt->serial_number; - } else - status = DID_ERROR << 16; - - break; - case 0x05: /* Unexpected Bus Phase */ - case 0x06: /* Unexpected Bus Free */ - case 0x07: /* Bus Parity Error */ - case 0x08: /* SCSI Hung */ - case 0x09: /* Unexpected Message Reject */ - case 0x0a: /* SCSI Bus Reset Stuck */ - case 0x0b: /* Auto Request-Sense Failed */ - case 0x0c: /* Controller Ram Parity Error */ - default: - status = DID_ERROR << 16; - break; - } - - SCpnt->result = status | spp->target_status; - -#if defined(DEBUG_INTERRUPT) - if (SCpnt->result || do_trace) -#else - if ((spp->adapter_status != ASOK && ha->iocount > 1000) || - (spp->adapter_status != ASOK && - spp->adapter_status != ASST && ha->iocount <= 1000) || - do_trace || msg_byte(spp->target_status)) -#endif - scmd_printk(KERN_INFO, SCpnt, "ihdlr, mbox %2d, err 0x%x:%x," - " reg 0x%x, count %d.\n", - i, spp->adapter_status, spp->target_status, - reg, ha->iocount); - - unmap_dma(i, ha); - - /* Set the command state to inactive */ - SCpnt->host_scribble = NULL; - - SCpnt->scsi_done(SCpnt); - - if (do_trace) - printk("%s: ihdlr, exit, irq %d, count %d.\n", ha->board_name, - irq, ha->iocount); - - handled: - return IRQ_HANDLED; - none: - return IRQ_NONE; -} - -static irqreturn_t do_interrupt_handler(int dummy, void *shap) -{ - struct Scsi_Host *shost; - unsigned int j; - unsigned long spin_flags; - irqreturn_t ret; - - /* Check if the interrupt must be processed by this handler */ - if ((j = (unsigned int)((char *)shap - sha)) >= num_boards) - return IRQ_NONE; - shost = sh[j]; - - spin_lock_irqsave(shost->host_lock, spin_flags); - ret = ihdlr(shost); - spin_unlock_irqrestore(shost->host_lock, spin_flags); - return ret; -} - -static int eata2x_release(struct Scsi_Host *shost) -{ - struct hostdata *ha = (struct hostdata *)shost->hostdata; - unsigned int i; - - for (i = 0; i < shost->can_queue; i++) - kfree((&ha->cp[i])->sglist); - - for (i = 0; i < shost->can_queue; i++) - pci_unmap_single(ha->pdev, ha->cp[i].cp_dma_addr, - sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL); - - if (ha->sp_cpu_addr) - pci_free_consistent(ha->pdev, sizeof(struct mssp), - ha->sp_cpu_addr, ha->sp_dma_addr); - - free_irq(shost->irq, &sha[ha->board_number]); - - if (shost->dma_channel != NO_DMA) - free_dma(shost->dma_channel); - - release_region(shost->io_port, shost->n_io_port); - scsi_unregister(shost); - return 0; -} - -#include "scsi_module.c" - -#ifndef MODULE -__setup("eata=", option_setup); -#endif /* end MODULE */ |