[SCSI] mvsas: Add Marvell 6440 SAS/SATA driver

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

3 files changed, 1836 insertions, 0 deletions

diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index a7a0813b24cb..c46666a24809 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -992,6 +992,16 @@ config SCSI_IZIP_SLOW_CTR
 
 	  Generally, saying N is fine.
 
+config SCSI_MVSAS
+	tristate "Marvell 88SE6440 SAS/SATA support"
+	depends on PCI && SCSI
+	select SCSI_SAS_LIBSAS
+	help
+	  This driver supports Marvell SAS/SATA PCI devices.
+
+	  To compiler this driver as a module, choose M here: the module
+	  will be called mvsas.
+
 config SCSI_NCR53C406A
 	tristate "NCR53c406a SCSI support"
 	depends on ISA && SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 925c26b4fff9..23e6ecbd4778 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -119,6 +119,7 @@ obj-$(CONFIG_SCSI_IBMVSCSI)	+= ibmvscsi/
 obj-$(CONFIG_SCSI_IBMVSCSIS)	+= ibmvscsi/
 obj-$(CONFIG_SCSI_HPTIOP)	+= hptiop.o
 obj-$(CONFIG_SCSI_STEX)		+= stex.o
+obj-$(CONFIG_SCSI_MVSAS)	+= mvsas.o
 obj-$(CONFIG_PS3_ROM)		+= ps3rom.o
 
 obj-$(CONFIG_ARM)		+= arm/
diff --git a/drivers/scsi/mvsas.c b/drivers/scsi/mvsas.c
new file mode 100644
index 000000000000..03638b9bb283
--- /dev/null
+++ b/drivers/scsi/mvsas.c
@@ -0,0 +1,1825 @@
+/*
+	mvsas.c - Marvell 88SE6440 SAS/SATA support
+
+	Copyright 2007 Red Hat, Inc.
+
+	This program is free software; you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation; either version 2,
+	or (at your option) any later version.
+
+	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 more details.
+
+	You should have received a copy of the GNU General Public
+	License along with this program; see the file COPYING.	If not,
+	write to the Free Software Foundation, 675 Mass Ave, Cambridge,
+	MA 02139, USA.
+
+	---------------------------------------------------------------
+
+	Random notes:
+	* hardware supports controlling the endian-ness of data
+	  structures.  this permits elimination of all the le32_to_cpu()
+	  and cpu_to_le32() conversions.
+
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <scsi/libsas.h>
+#include <asm/io.h>
+
+#define DRV_NAME "mvsas"
+#define DRV_VERSION "0.1"
+
+#define mr32(reg)	readl(regs + MVS_##reg)
+#define mw32(reg,val)	writel((val), regs + MVS_##reg)
+#define mw32_f(reg,val)	do {		\
+	writel((val), regs + MVS_##reg);	\
+	readl(regs + MVS_##reg);		\
+	} while (0)
+
+/* driver compile-time configuration */
+enum driver_configuration {
+	MVS_TX_RING_SZ		= 1024,	/* TX ring size (12-bit) */
+	MVS_RX_RING_SZ		= 1024, /* RX ring size (12-bit) */
+					/* software requires power-of-2
+					   ring size */
+
+	MVS_SLOTS		= 512,	/* command slots */
+	MVS_SLOT_BUF_SZ		= 8192, /* cmd tbl + IU + status + PRD */
+	MVS_SSP_CMD_SZ		= 64,	/* SSP command table buffer size */
+	MVS_ATA_CMD_SZ		= 128,	/* SATA command table buffer size */
+	MVS_OAF_SZ		= 64,	/* Open address frame buffer size */
+
+	MVS_RX_FIS_COUNT	= 17,	/* Optional rx'd FISs (max 17) */
+};
+
+/* unchangeable hardware details */
+enum hardware_details {
+	MVS_MAX_PHYS		= 8,	/* max. possible phys */
+	MVS_MAX_PORTS		= 8,	/* max. possible ports */
+	MVS_RX_FISL_SZ		= 0x400 + (MVS_RX_FIS_COUNT * 0x100),
+};
+
+/* peripheral registers (BAR2) */
+enum peripheral_registers {
+	SPI_CTL			= 0x10,	/* EEPROM control */
+	SPI_CMD			= 0x14,	/* EEPROM command */
+	SPI_DATA		= 0x18, /* EEPROM data */
+};
+
+enum peripheral_register_bits {
+	TWSI_RDY		= (1U << 7),	/* EEPROM interface ready */
+	TWSI_RD			= (1U << 4),	/* EEPROM read access */
+
+	SPI_ADDR_MASK		= 0x3ffff,	/* bits 17:0 */
+};
+
+/* enhanced mode registers (BAR4) */
+enum hw_registers {
+	MVS_GBL_CTL		= 0x04,  /* global control */
+	MVS_GBL_INT_STAT	= 0x08,  /* global irq status */
+	MVS_GBL_PI		= 0x0C,  /* ports implemented bitmask */
+	MVS_GBL_PORT_TYPE	= 0x00,  /* port type */
+
+	MVS_CTL			= 0x100, /* SAS/SATA port configuration */
+	MVS_PCS			= 0x104, /* SAS/SATA port control/status */
+	MVS_CMD_LIST_LO		= 0x108, /* cmd list addr */
+	MVS_CMD_LIST_HI		= 0x10C,
+	MVS_RX_FIS_LO		= 0x110, /* RX FIS list addr */
+	MVS_RX_FIS_HI		= 0x114,
+
+	MVS_TX_CFG		= 0x120, /* TX configuration */
+	MVS_TX_LO		= 0x124, /* TX (delivery) ring addr */
+	MVS_TX_HI		= 0x128,
+
+	MVS_RX_PROD_IDX		= 0x12C, /* RX producer pointer */
+	MVS_RX_CONS_IDX		= 0x130, /* RX consumer pointer (RO) */
+	MVS_RX_CFG		= 0x134, /* RX configuration */
+	MVS_RX_LO		= 0x138, /* RX (completion) ring addr */
+	MVS_RX_HI		= 0x13C,
+
+	MVS_INT_COAL		= 0x148, /* Int coalescing config */
+	MVS_INT_COAL_TMOUT	= 0x14C, /* Int coalescing timeout */
+	MVS_INT_STAT		= 0x150, /* Central int status */
+	MVS_INT_MASK		= 0x154, /* Central int enable */
+	MVS_INT_STAT_SRS	= 0x158, /* SATA register set status */
+
+					 /* ports 1-3 follow after this */
+	MVS_P0_INT_STAT		= 0x160, /* port0 interrupt status */
+	MVS_P0_INT_MASK		= 0x164, /* port0 interrupt mask */
+
+					 /* ports 1-3 follow after this */
+	MVS_P0_SER_CTLSTAT	= 0x180, /* port0 serial control/status */
+
+	MVS_CMD_ADDR		= 0x1B8, /* Command register port (addr) */
+	MVS_CMD_DATA		= 0x1BC, /* Command register port (data) */
+
+					 /* ports 1-3 follow after this */
+	MVS_P0_CFG_ADDR		= 0x1C0, /* port0 phy register address */
+	MVS_P0_CFG_DATA		= 0x1C4, /* port0 phy register data */
+};
+
+enum hw_register_bits {
+	/* MVS_GBL_CTL */
+	INT_EN			= (1U << 1),	/* Global int enable */
+	HBA_RST			= (1U << 0),	/* HBA reset */
+
+	/* MVS_GBL_INT_STAT */
+	INT_XOR			= (1U << 4),	/* XOR engine event */
+	INT_SAS_SATA		= (1U << 0),	/* SAS/SATA event */
+
+	/* MVS_GBL_PORT_TYPE */			/* shl for ports 1-3 */
+	SATA_TARGET		= (1U << 16),	/* port0 SATA target enable */
+	AUTO_DET		= (1U << 8),	/* port0 SAS/SATA autodetect */
+	SAS_MODE		= (1U << 0),	/* port0 SAS(1), SATA(0) mode */
+						/* SAS_MODE value may be
+						 * dictated (in hw) by values
+						 * of SATA_TARGET & AUTO_DET
+						 */
+
+	/* MVS_TX_CFG */
+	TX_EN			= (1U << 16),	/* Enable TX */
+	TX_RING_SZ_MASK		= 0xfff,	/* TX ring size, bits 11:0 */
+
+	/* MVS_RX_CFG */
+	RX_EN			= (1U << 16),	/* Enable RX */
+	RX_RING_SZ_MASK		= 0xfff,	/* RX ring size, bits 11:0 */
+
+	/* MVS_INT_COAL */
+	COAL_EN			= (1U << 16),	/* Enable int coalescing */
+
+	/* MVS_INT_STAT, MVS_INT_MASK */
+	CINT_I2C		= (1U << 31),	/* I2C event */
+	CINT_SW0		= (1U << 30),	/* software event 0 */
+	CINT_SW1		= (1U << 29),	/* software event 1 */
+	CINT_PRD_BC		= (1U << 28),	/* PRD BC err for read cmd */
+	CINT_DMA_PCIE		= (1U << 27),	/* DMA to PCIE timeout */
+	CINT_MEM		= (1U << 26),	/* int mem parity err */
+	CINT_I2C_SLAVE		= (1U << 25),	/* slave I2C event */
+	CINT_SRS		= (1U << 3),	/* SRS event */
+	CINT_CI_STOP		= (1U << 10),	/* cmd issue stopped */
+	CINT_DONE		= (1U << 0),	/* cmd completion */
+
+						/* shl for ports 1-3 */
+	CINT_PORT_STOPPED	= (1U << 16),	/* port0 stopped */
+	CINT_PORT		= (1U << 8),	/* port0 event */
+
+	/* TX (delivery) ring bits */
+	TXQ_CMD_SHIFT		= 29,
+	TXQ_CMD_SSP		= 1,		/* SSP protocol */
+	TXQ_CMD_SMP		= 2,		/* SMP protocol */
+	TXQ_CMD_STP		= 3,		/* STP/SATA protocol */
+	TXQ_CMD_SSP_FREE_LIST	= 4,		/* add to SSP targ free list */
+	TXQ_CMD_SLOT_RESET	= 7,		/* reset command slot */
+	TXQ_MODE_I		= (1U << 28),	/* mode: 0=target,1=initiator */
+	TXQ_PRIO_HI		= (1U << 27),	/* priority: 0=normal, 1=high */
+	TXQ_SRS_SHIFT		= 20,		/* SATA register set */
+	TXQ_SRS_MASK		= 0x7f,
+	TXQ_PHY_SHIFT		= 12,		/* PHY bitmap */
+	TXQ_PHY_MASK		= 0xff,
+	TXQ_SLOT_MASK		= 0xfff,	/* slot number */
+
+	/* RX (completion) ring bits */
+	RXQ_GOOD		= (1U << 23),	/* Response good */
+	RXQ_SLOT_RESET		= (1U << 21),	/* Slot reset complete */
+	RXQ_CMD_RX		= (1U << 20),	/* target cmd received */
+	RXQ_ATTN		= (1U << 19),	/* attention */
+	RXQ_RSP			= (1U << 18),	/* response frame xfer'd */
+	RXQ_ERR			= (1U << 17),	/* err info rec xfer'd */
+	RXQ_DONE		= (1U << 16),	/* cmd complete */
+	RXQ_SLOT_MASK		= 0xfff,	/* slot number */
+
+	/* mvs_cmd_hdr bits */
+	MCH_PRD_LEN_SHIFT	= 16,		/* 16-bit PRD table len */
+	MCH_SSP_FR_TYPE_SHIFT	= 13,		/* SSP frame type */
+
+						/* SSP initiator only */
+	MCH_SSP_FR_CMD		= 0x0,		/* COMMAND frame */
+
+						/* SSP initiator or target */
+	MCH_SSP_FR_TASK		= 0x1,		/* TASK frame */
+
+						/* SSP target only */
+	MCH_SSP_FR_XFER_RDY	= 0x4,		/* XFER_RDY frame */
+	MCH_SSP_FR_RESP		= 0x5,		/* RESPONSE frame */
+	MCH_SSP_FR_READ		= 0x6,		/* Read DATA frame(s) */
+	MCH_SSP_FR_READ_RESP	= 0x7,		/* ditto, plus RESPONSE */
+
+	MCH_PASSTHRU		= (1U << 12),	/* pass-through (SSP) */
+	MCH_FBURST		= (1U << 11),	/* first burst (SSP) */
+	MCH_CHK_LEN		= (1U << 10),	/* chk xfer len (SSP) */
+	MCH_RETRY		= (1U << 9),	/* tport layer retry (SSP) */
+	MCH_PROTECTION		= (1U << 8),	/* protection info rec (SSP) */
+	MCH_RESET		= (1U << 7),	/* Reset (STP/SATA) */
+	MCH_FPDMA		= (1U << 6),	/* First party DMA (STP/SATA) */
+	MCH_ATAPI		= (1U << 5),	/* ATAPI (STP/SATA) */
+	MCH_BIST		= (1U << 4),	/* BIST activate (STP/SATA) */
+	MCH_PMP_MASK		= 0xf,		/* PMP from cmd FIS (STP/SATA)*/
+
+	CCTL_RST		= (1U << 5),	/* port logic reset */
+
+						/* 0(LSB first), 1(MSB first) */
+	CCTL_ENDIAN_DATA	= (1U << 3),	/* PRD data */
+	CCTL_ENDIAN_RSP		= (1U << 2),	/* response frame */
+	CCTL_ENDIAN_OPEN	= (1U << 1),	/* open address frame */
+	CCTL_ENDIAN_CMD		= (1U << 0),	/* command table */
+
+	/* MVS_Px_SER_CTLSTAT (per-phy control) */
+	PHY_SSP_RST		= (1U << 3),	/* reset SSP link layer */
+	PHY_BCAST_CHG		= (1U << 2),	/* broadcast(change) notif */
+	PHY_RST_HARD		= (1U << 1),	/* hard reset + phy reset */
+	PHY_RST			= (1U << 0),	/* phy reset */
+
+	/* MVS_Px_INT_STAT, MVS_Px_INT_MASK (per-phy events) */
+	PHYEV_UNASSOC_FIS	= (1U << 19),	/* unassociated FIS rx'd */
+	PHYEV_AN		= (1U << 18),	/* SATA async notification */
+	PHYEV_BIST_ACT		= (1U << 17),	/* BIST activate FIS */
+	PHYEV_SIG_FIS		= (1U << 16),	/* signature FIS */
+	PHYEV_POOF		= (1U << 12),	/* phy ready from 1 -> 0 */
+	PHYEV_IU_BIG		= (1U << 11),	/* IU too long err */
+	PHYEV_IU_SMALL		= (1U << 10),	/* IU too short err */
+	PHYEV_UNK_TAG		= (1U << 9),	/* unknown tag */
+	PHYEV_BROAD_CH		= (1U << 8),	/* broadcast(CHANGE) */
+	PHYEV_COMWAKE		= (1U << 7),	/* COMWAKE rx'd */
+	PHYEV_PORT_SEL		= (1U << 6),	/* port selector present */
+	PHYEV_HARD_RST		= (1U << 5),	/* hard reset rx'd */
+	PHYEV_ID_TMOUT		= (1U << 4),	/* identify timeout */
+	PHYEV_ID_FAIL		= (1U << 3),	/* identify failed */
+	PHYEV_ID_DONE		= (1U << 2),	/* identify done */
+	PHYEV_HARD_RST_DONE	= (1U << 1),	/* hard reset done */
+	PHYEV_RDY_CH		= (1U << 0),	/* phy ready changed state */
+
+	/* MVS_PCS */
+	PCS_SATA_RETRY		= (1U << 8),	/* retry ctl FIS on R_ERR */
+	PCS_RSP_RX_EN		= (1U << 7),	/* raw response rx */
+	PCS_SELF_CLEAR		= (1U << 5),	/* self-clearing int mode */
+	PCS_FIS_RX_EN		= (1U << 4),	/* FIS rx enable */
+	PCS_CMD_STOP_ERR	= (1U << 3),	/* cmd stop-on-err enable */
+	PCS_CMD_RST		= (1U << 2),	/* reset cmd issue */
+	PCS_CMD_EN		= (1U << 0),	/* enable cmd issue */
+};
+
+enum mvs_info_flags {
+	MVF_MSI			= (1U << 0),	/* MSI is enabled */
+	MVF_PHY_PWR_FIX		= (1U << 1),	/* bug workaround */
+};
+
+enum sas_cmd_port_registers {
+	CMD_CMRST_OOB_DET	= 0x100, /* COMRESET OOB detect register */
+	CMD_CMWK_OOB_DET	= 0x104, /* COMWAKE OOB detect register */
+	CMD_CMSAS_OOB_DET	= 0x108, /* COMSAS OOB detect register */
+	CMD_BRST_OOB_DET	= 0x10c, /* burst OOB detect register */
+	CMD_OOB_SPACE		= 0x110, /* OOB space control register */
+	CMD_OOB_BURST		= 0x114, /* OOB burst control register */
+	CMD_PHY_TIMER		= 0x118, /* PHY timer control register */
+	CMD_PHY_CONFIG0		= 0x11c, /* PHY config register 0 */
+	CMD_PHY_CONFIG1		= 0x120, /* PHY config register 1 */
+	CMD_SAS_CTL0		= 0x124, /* SAS control register 0 */
+	CMD_SAS_CTL1		= 0x128, /* SAS control register 1 */
+	CMD_SAS_CTL2		= 0x12c, /* SAS control register 2 */
+	CMD_SAS_CTL3		= 0x130, /* SAS control register 3 */
+	CMD_ID_TEST		= 0x134, /* ID test register */
+	CMD_PL_TIMER		= 0x138, /* PL timer register */
+	CMD_WD_TIMER		= 0x13c, /* WD timer register */
+	CMD_PORT_SEL_COUNT	= 0x140, /* port selector count register */
+	CMD_APP_MEM_CTL		= 0x144, /* Application Memory Control */
+	CMD_XOR_MEM_CTL		= 0x148, /* XOR Block Memory Control */
+	CMD_DMA_MEM_CTL		= 0x14c, /* DMA Block Memory Control */
+	CMD_PORT_MEM_CTL0	= 0x150, /* Port Memory Control 0 */
+	CMD_PORT_MEM_CTL1	= 0x154, /* Port Memory Control 1 */
+	CMD_SATA_PORT_MEM_CTL0	= 0x158, /* SATA Port Memory Control 0 */
+	CMD_SATA_PORT_MEM_CTL1	= 0x15c, /* SATA Port Memory Control 1 */
+	CMD_XOR_MEM_BIST_CTL	= 0x160, /* XOR Memory BIST Control */
+	CMD_XOR_MEM_BIST_STAT	= 0x164, /* XOR Memroy BIST Status */
+	CMD_DMA_MEM_BIST_CTL	= 0x168, /* DMA Memory BIST Control */
+	CMD_DMA_MEM_BIST_STAT	= 0x16c, /* DMA Memory BIST Status */
+	CMD_PORT_MEM_BIST_CTL	= 0x170, /* Port Memory BIST Control */
+	CMD_PORT_MEM_BIST_STAT0 = 0x174, /* Port Memory BIST Status 0 */
+	CMD_PORT_MEM_BIST_STAT1 = 0x178, /* Port Memory BIST Status 1 */
+	CMD_STP_MEM_BIST_CTL	= 0x17c, /* STP Memory BIST Control */
+	CMD_STP_MEM_BIST_STAT0	= 0x180, /* STP Memory BIST Status 0 */
+	CMD_STP_MEM_BIST_STAT1	= 0x184, /* STP Memory BIST Status 1 */
+	CMD_RESET_COUNT		= 0x188, /* Reset Count */
+	CMD_MONTR_DATA_SEL	= 0x18C, /* Monitor Data/Select */
+	CMD_PLL_PHY_CONFIG	= 0x190, /* PLL/PHY Configuration */
+	CMD_PHY_CTL		= 0x194, /* PHY Control and Status */
+	CMD_PHY_TEST_COUNT0	= 0x198, /* Phy Test Count 0 */
+	CMD_PHY_TEST_COUNT1	= 0x19C, /* Phy Test Count 1 */
+	CMD_PHY_TEST_COUNT2	= 0x1A0, /* Phy Test Count 2 */
+	CMD_APP_ERR_CONFIG	= 0x1A4, /* Application Error Configuration */
+	CMD_PND_FIFO_CTL0	= 0x1A8, /* Pending FIFO Control 0 */
+	CMD_HOST_CTL		= 0x1AC, /* Host Control Status */
+	CMD_HOST_WR_DATA	= 0x1B0, /* Host Write Data */
+	CMD_HOST_RD_DATA	= 0x1B4, /* Host Read Data */
+	CMD_PHY_MODE_21		= 0x1B8, /* Phy Mode 21 */
+	CMD_SL_MODE0		= 0x1BC, /* SL Mode 0 */
+	CMD_SL_MODE1		= 0x1C0, /* SL Mode 1 */
+	CMD_PND_FIFO_CTL1	= 0x1C4, /* Pending FIFO Control 1 */
+};
+
+/* SAS/SATA configuration port registers, aka phy registers */
+enum sas_sata_config_port_regs {
+	PHYR_IDENTIFY		= 0x0,	/* info for IDENTIFY frame */
+	PHYR_ADDR_LO		= 0x4,	/* my SAS address (low) */
+	PHYR_ADDR_HI		= 0x8,	/* my SAS address (high) */
+	PHYR_ATT_DEV_INFO	= 0xC,	/* attached device info */
+	PHYR_ATT_ADDR_LO	= 0x10,	/* attached dev SAS addr (low) */
+	PHYR_ATT_ADDR_HI	= 0x14,	/* attached dev SAS addr (high) */
+	PHYR_SATA_CTL		= 0x18,	/* SATA control */
+	PHYR_PHY_STAT		= 0x1C,	/* PHY status */
+	PHYR_WIDE_PORT		= 0x38,	/* wide port participating */
+	PHYR_CURRENT0		= 0x80,	/* current connection info 0 */
+	PHYR_CURRENT1		= 0x84,	/* current connection info 1 */
+	PHYR_CURRENT2		= 0x88,	/* current connection info 2 */
+};
+
+enum pci_cfg_registers {
+	PCR_PHY_CTL		= 0x40,
+	PCR_PHY_CTL2		= 0x90,
+};
+
+enum pci_cfg_register_bits {
+	PCTL_PWR_ON		= (0xFU << 24),
+	PCTL_OFF		= (0xFU << 12),
+};
+
+enum nvram_layout_offsets {
+	NVR_SIG			= 0x00,		/* 0xAA, 0x55 */
+	NVR_SAS_ADDR		= 0x02,		/* 8-byte SAS address */
+};
+
+enum chip_flavors {
+	chip_6320,
+	chip_6440,
+	chip_6480,
+};
+
+struct mvs_chip_info {
+	unsigned int		n_phy;
+	unsigned int		srs_sz;
+	unsigned int		slot_width;
+};
+
+struct mvs_err_info {
+	__le32			flags;
+	__le32			flags2;
+};
+
+struct mvs_prd {
+	__le64			addr;		/* 64-bit buffer address */
+	__le32			reserved;
+	__le32			len;		/* 16-bit length */
+};
+
+struct mvs_cmd_hdr {
+	__le32			flags;		/* PRD tbl len; SAS, SATA ctl */
+	__le32			lens;		/* cmd, max resp frame len */
+	__le32			tags;		/* targ port xfer tag; tag */
+	__le32			data_len;	/* data xfer len */
+	__le64			cmd_tbl;	/* command table address */
+	__le64			open_frame;	/* open addr frame address */
+	__le64			status_buf;	/* status buffer address */
+	__le64			prd_tbl;	/* PRD tbl address */
+	__le32			reserved[4];
+};
+
+struct mvs_slot_info {
+	struct sas_task		*task;
+	unsigned int		n_elem;
+
+	/* DMA buffer for storing cmd tbl, open addr frame, status buffer,
+	 * and PRD table
+	 */
+	void			*buf;
+	dma_addr_t		buf_dma;
+
+	void			*response;
+};
+
+struct mvs_port {
+	struct asd_sas_port	sas_port;
+};
+
+struct mvs_phy {
+	struct mvs_port		*port;
+	struct asd_sas_phy	sas_phy;
+
+	u8			frame_rcvd[24 + 1024];
+};
+
+struct mvs_info {
+	unsigned long		flags;
+
+	spinlock_t		lock;		/* host-wide lock */
+	struct pci_dev		*pdev;		/* our device */
+	void __iomem		*regs;		/* enhanced mode registers */
+	void __iomem		*peri_regs;	/* peripheral registers */
+
+	u8			sas_addr[SAS_ADDR_SIZE];
+	struct sas_ha_struct	sas;		/* SCSI/SAS glue */
+	struct Scsi_Host	*shost;
+
+	__le32			*tx;		/* TX (delivery) DMA ring */
+	dma_addr_t		tx_dma;
+	u32			tx_prod;	/* cached next-producer idx */
+
+	__le32			*rx;		/* RX (completion) DMA ring */
+	dma_addr_t		rx_dma;
+	u32			rx_cons;	/* RX consumer idx */
+
+	__le32			*rx_fis;	/* RX'd FIS area */
+	dma_addr_t		rx_fis_dma;
+
+	struct mvs_cmd_hdr	*slot;		/* DMA command header slots */
+	dma_addr_t		slot_dma;
+
+	const struct mvs_chip_info *chip;
+
+					/* further per-slot information */
+	struct mvs_slot_info	slot_info[MVS_SLOTS];
+	unsigned long		tags[(MVS_SLOTS / sizeof(unsigned long)) + 1];
+
+	struct mvs_phy		phy[MVS_MAX_PHYS];
+	struct mvs_port		port[MVS_MAX_PHYS];
+};
+
+static struct scsi_transport_template *mvs_stt;
+
+static const struct mvs_chip_info mvs_chips[] = {
+	[chip_6320] =		{ 2, 16, 9 },
+	[chip_6440] =		{ 4, 16, 9 },
+	[chip_6480] =		{ 8, 32, 10 },
+};
+
+static struct scsi_host_template mvs_sht = {
+	.module			= THIS_MODULE,
+	.name			= DRV_NAME,
+	.queuecommand		= sas_queuecommand,
+	.target_alloc		= sas_target_alloc,
+	.slave_configure	= sas_slave_configure,
+	.slave_destroy		= sas_slave_destroy,
+	.change_queue_depth	= sas_change_queue_depth,
+	.change_queue_type	= sas_change_queue_type,
+	.bios_param		= sas_bios_param,
+	.can_queue		= 1,
+	.cmd_per_lun		= 1,
+	.this_id		= -1,
+	.sg_tablesize		= SG_ALL,
+	.max_sectors		= SCSI_DEFAULT_MAX_SECTORS,
+	.use_clustering		= ENABLE_CLUSTERING,
+	.eh_device_reset_handler= sas_eh_device_reset_handler,
+	.eh_bus_reset_handler	= sas_eh_bus_reset_handler,
+	.slave_alloc		= sas_slave_alloc,
+	.target_destroy		= sas_target_destroy,
+	.ioctl			= sas_ioctl,
+};
+
+static void mvs_int_rx(struct mvs_info *mvi, bool self_clear);
+
+/* move to PCI layer or libata core? */
+static int pci_go_64(struct pci_dev *pdev)
+{
+	int rc;
+
+	if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
+		rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
+		if (rc) {
+			rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+			if (rc) {
+				dev_printk(KERN_ERR, &pdev->dev,
+					   "64-bit DMA enable failed\n");
+				return rc;
+			}
+		}
+	} else {
+		rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+		if (rc) {
+			dev_printk(KERN_ERR, &pdev->dev,
+				   "32-bit DMA enable failed\n");
+			return rc;
+		}
+		rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+		if (rc) {
+			dev_printk(KERN_ERR, &pdev->dev,
+				   "32-bit consistent DMA enable failed\n");
+			return rc;
+		}
+	}
+
+	return rc;
+}
+
+static void mvs_tag_clear(struct mvs_info *mvi, unsigned int tag)
+{
+	mvi->tags[tag / sizeof(unsigned long)] &=
+		~(1UL << (tag % sizeof(unsigned long)));
+}
+
+static void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
+{
+	mvi->tags[tag / sizeof(unsigned long)] |=
+		(1UL << (tag % sizeof(unsigned long)));
+}
+
+static bool mvs_tag_test(struct mvs_info *mvi, unsigned int tag)
+{
+	return mvi->tags[tag / sizeof(unsigned long)] &
+		(1UL << (tag % sizeof(unsigned long)));
+}
+
+static int mvs_tag_alloc(struct mvs_info *mvi, unsigned int *tag_out)
+{
+	unsigned int i;
+
+	for (i = 0; i < MVS_SLOTS; i++)
+		if (!mvs_tag_test(mvi, i)) {
+			mvs_tag_set(mvi, i);
+			*tag_out = i;
+			return 0;
+		}
+
+	return -EBUSY;
+}
+
+static int mvs_eep_read(void __iomem *regs, unsigned int addr, u32 *data)
+{
+	int timeout = 1000;
+
+	if (addr & ~SPI_ADDR_MASK)
+		return -EINVAL;
+
+	writel(addr, regs + SPI_CMD);
+	writel(TWSI_RD, regs + SPI_CTL);
+
+	while (timeout-- > 0) {
+		if (readl(regs + SPI_CTL) & TWSI_RDY) {
+			*data = readl(regs + SPI_DATA);
+			return 0;
+		}
+
+		udelay(10);
+	}
+
+	return -EBUSY;
+}
+
+static int mvs_eep_read_buf(void __iomem *regs, unsigned int addr,
+			    void *buf, unsigned int buflen)
+{
+	unsigned int addr_end, tmp_addr, i, j;
+	u32 tmp = 0;
+	int rc;
+	u8 *tmp8, *buf8 = buf;
+
+	addr_end = addr + buflen;
+	tmp_addr = ALIGN(addr, 4);
+	if (addr > 0xff)
+		return -EINVAL;
+
+	j = addr & 0x3;
+	if (j) {
+		rc = mvs_eep_read(regs, tmp_addr, &tmp);
+		if (rc)
+			return rc;
+
+		tmp8 = (u8 *) &tmp;
+		for (i = j; i < 4; i++)
+			*buf8++ = tmp8[i];
+
+		tmp_addr += 4;
+	}
+
+	for (j = ALIGN(addr_end, 4); tmp_addr < j; tmp_addr += 4) {
+		rc = mvs_eep_read(regs, tmp_addr, &tmp);
+		if (rc)
+			return rc;
+
+		memcpy(buf8, &tmp, 4);
+		buf8 += 4;
+	}
+
+	if (tmp_addr < addr_end) {
+		rc = mvs_eep_read(regs, tmp_addr, &tmp);
+		if (rc)
+			return rc;
+
+		tmp8 = (u8 *) &tmp;
+		j = addr_end - tmp_addr;
+		for (i = 0; i < j; i++)
+			*buf8++ = tmp8[i];
+
+		tmp_addr += 4;
+	}
+
+	return 0;
+}
+
+static int mvs_nvram_read(struct mvs_info *mvi, unsigned int addr,
+			  void *buf, unsigned int buflen)
+{
+	void __iomem *regs = mvi->regs;
+	int rc, i;
+	unsigned int sum;
+	u8 hdr[2], *tmp;
+	const char *msg;
+
+	rc = mvs_eep_read_buf(regs, addr, &hdr, 2);
+	if (rc) {
+		msg = "nvram hdr read failed";
+		goto err_out;
+	}
+	rc = mvs_eep_read_buf(regs, addr + 2, buf, buflen);
+	if (rc) {
+		msg = "nvram read failed";
+		goto err_out;
+	}
+
+	if (hdr[0] != 0x5A) {		/* entry id */
+		msg = "invalid nvram entry id";
+		rc = -ENOENT;
+		goto err_out;
+	}
+
+	tmp = buf;
+	sum = ((unsigned int)hdr[0]) + ((unsigned int)hdr[1]);
+	for (i = 0; i < buflen; i++)
+		sum += ((unsigned int)tmp[i]);
+
+	if (sum) {
+		msg = "nvram checksum failure";
+		rc = -EILSEQ;
+		goto err_out;
+	}
+
+	return 0;
+
+err_out:
+	dev_printk(KERN_ERR, &mvi->pdev->dev, "%s", msg);
+	return rc;
+}
+
+static void mvs_int_port(struct mvs_info *mvi, int port_no, u32 events)
+{
+	/* FIXME */
+}
+
+static void mvs_int_sata(struct mvs_info *mvi)
+{
+	/* FIXME */
+}
+
+static void mvs_slot_free(struct mvs_info *mvi, struct sas_task *task,
+			  struct mvs_slot_info *slot, unsigned int slot_idx)
+{
+	if (slot->n_elem)
+		pci_unmap_sg(mvi->pdev, task->scatter,
+			     slot->n_elem, task->data_dir);
+
+	switch (task->task_proto) {
+	case SAS_PROTOCOL_SMP:
+		pci_unmap_sg(mvi->pdev, &task->smp_task.smp_resp, 1,
+			     PCI_DMA_FROMDEVICE);
+		pci_unmap_sg(mvi->pdev, &task->smp_task.smp_req, 1,
+			     PCI_DMA_TODEVICE);
+		break;
+
+	case SAS_PROTOCOL_SATA:
+	case SAS_PROTOCOL_STP:
+	case SAS_PROTOCOL_SSP:
+	default:
+		/* do nothing */
+		break;
+	}
+
+	mvs_tag_clear(mvi, slot_idx);
+}
+
+static void mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
+			 unsigned int slot_idx)
+{
+	/* FIXME */
+}
+
+static void mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc)
+{
+	unsigned int slot_idx = rx_desc & RXQ_SLOT_MASK;
+	struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
+	struct sas_task *task = slot->task;
+	struct task_status_struct *tstat = &task->task_status;
+	bool aborted;
+
+	spin_lock(&task->task_state_lock);
+	aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
+	if (!aborted) {
+		task->task_state_flags &=
+			~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
+		task->task_state_flags |= SAS_TASK_STATE_DONE;
+	}
+	spin_unlock(&task->task_state_lock);
+
+	if (aborted)
+		return;
+
+	memset(tstat, 0, sizeof(*tstat));
+	tstat->resp = SAS_TASK_COMPLETE;
+
+	/* error info record present */
+	if (rx_desc & RXQ_ERR) {
+		tstat->stat = SAM_CHECK_COND;
+		mvs_slot_err(mvi, task, slot_idx);
+		goto out;
+	}
+
+	switch (task->task_proto) {
+	case SAS_PROTOCOL_SSP:
+		/* hw says status == 0, datapres == 0 */
+		if (rx_desc & RXQ_GOOD)
+			tstat->stat = SAM_GOOD;
+
+		/* response frame present */
+		else if (rx_desc & RXQ_RSP) {
+			struct ssp_response_iu *iu =
+				slot->response + sizeof(struct mvs_err_info);
+			sas_ssp_task_response(&mvi->pdev->dev, task, iu);
+		}
+
+		/* should never happen? */
+		else
+			tstat->stat = SAM_CHECK_COND;
+		break;
+
+	case SAS_PROTOCOL_SMP:
+		tstat->stat = SAM_GOOD;
+		break;
+
+	case SAS_PROTOCOL_SATA:
+	case SAS_PROTOCOL_STP:
+		if ((rx_desc & (RXQ_DONE | RXQ_ERR | RXQ_ATTN)) == RXQ_DONE)
+			tstat->stat = SAM_GOOD;
+		else
+			tstat->stat = SAM_CHECK_COND;
+		/* FIXME: read taskfile data from SATA register set
+		 * associated with SATA target
+		 */
+		break;
+
+	default:
+		tstat->stat = SAM_CHECK_COND;
+		break;
+	}
+
+out:
+	mvs_slot_free(mvi, task, slot, slot_idx);
+	task->task_done(task);
+}
+
+static void mvs_int_full(struct mvs_info *mvi)
+{
+	void __iomem *regs = mvi->regs;
+	u32 tmp, stat;
+	int i;
+
+	stat = mr32(INT_STAT);
+
+	for (i = 0; i < MVS_MAX_PORTS; i++) {
+		tmp = (stat >> i) & (CINT_PORT | CINT_PORT_STOPPED);
+		if (tmp)
+			mvs_int_port(mvi, i, tmp);
+	}
+
+	if (stat & CINT_SRS)
+		mvs_int_sata(mvi);
+
+	if (stat & (CINT_CI_STOP | CINT_DONE))
+		mvs_int_rx(mvi, false);
+
+	mw32(INT_STAT, stat);
+}
+
+static void mvs_int_rx(struct mvs_info *mvi, bool self_clear)
+{
+	u32 rx_prod_idx, rx_desc;
+	bool attn = false;
+
+	/* the first dword in the RX ring is special: it contains
+	 * a mirror of the hardware's RX producer index, so that
+	 * we don't have to stall the CPU reading that register.
+	 * The actual RX ring is offset by one dword, due to this.
+	 */
+	rx_prod_idx = le32_to_cpu(mvi->rx[0]) & 0xfff;
+	if (rx_prod_idx == 0xfff) {	/* h/w hasn't touched RX ring yet */
+		mvi->rx_cons = 0xfff;
+		return;
+	}
+	if (mvi->rx_cons == 0xfff)
+		mvi->rx_cons = MVS_RX_RING_SZ - 1;
+
+	while (mvi->rx_cons != rx_prod_idx) {
+		/* increment our internal RX consumer pointer */
+		mvi->rx_cons = (mvi->rx_cons + 1) & (MVS_RX_RING_SZ - 1);
+
+		/* Read RX descriptor at offset+1, due to above */
+		rx_desc = le32_to_cpu(mvi->rx[mvi->rx_cons + 1]);
+
+		if (rx_desc & RXQ_DONE)
+			/* we had a completion, error or no */
+			mvs_slot_complete(mvi, rx_desc);
+
+		if (rx_desc & RXQ_ATTN)
+			attn = true;
+	}
+
+	if (attn && self_clear)
+		mvs_int_full(mvi);
+
+}
+
+static irqreturn_t mvs_interrupt(int irq, void *opaque)
+{
+	struct mvs_info *mvi = opaque;
+	void __iomem *regs = mvi->regs;
+	u32 stat;
+
+	stat = mr32(GBL_INT_STAT);
+	if (stat == 0 || stat == 0xffffffff)
+		return IRQ_NONE;
+
+	spin_lock(&mvi->lock);
+
+	mvs_int_full(mvi);
+
+	spin_unlock(&mvi->lock);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t mvs_msi_interrupt(int irq, void *opaque)
+{
+	struct mvs_info *mvi = opaque;
+
+	spin_lock(&mvi->lock);
+
+	mvs_int_rx(mvi, true);
+
+	spin_unlock(&mvi->lock);
+
+	return IRQ_HANDLED;
+}
+
+struct mvs_task_exec_info {
+	struct sas_task		*task;
+	struct mvs_cmd_hdr	*hdr;
+	unsigned int		tag;
+	int			n_elem;
+};
+
+static int mvs_task_prep_smp(struct mvs_info *mvi, struct mvs_task_exec_info *tei)
+{
+	int elem, rc;
+	struct mvs_cmd_hdr *hdr = tei->hdr;
+	struct scatterlist *sg_req, *sg_resp;
+	unsigned int req_len, resp_len, tag = tei->tag;
+
+	/*
+	 * DMA-map SMP request, response buffers
+	 */
+
+	sg_req = &tei->task->smp_task.smp_req;
+	elem = pci_map_sg(mvi->pdev, sg_req, 1, PCI_DMA_TODEVICE);
+	if (!elem)
+		return -ENOMEM;
+	req_len = sg_dma_len(sg_req);
+
+	sg_resp = &tei->task->smp_task.smp_resp;
+	elem = pci_map_sg(mvi->pdev, sg_resp, 1, PCI_DMA_FROMDEVICE);
+	if (!elem) {
+		rc = -ENOMEM;
+		goto err_out;
+	}
+	resp_len = sg_dma_len(sg_resp);
+
+	/* must be in dwords */
+	if ((req_len & 0x3) || (resp_len & 0x3)) {
+		rc = -EINVAL;
+		goto err_out_2;
+	}
+
+	/*
+	 * Fill in TX ring and command slot header
+	 */
+
+	mvi->tx[tag] = cpu_to_le32(
+		(TXQ_CMD_SMP << TXQ_CMD_SHIFT) | TXQ_MODE_I | tag);
+
+	hdr->flags = 0;
+	hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
+	hdr->tags = cpu_to_le32(tag);
+	hdr->data_len = 0;
+	hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
+	hdr->open_frame = 0;
+	hdr->status_buf = cpu_to_le64(sg_dma_address(sg_resp));
+	hdr->prd_tbl = 0;
+
+	return 0;
+
+err_out_2:
+	pci_unmap_sg(mvi->pdev, &tei->task->smp_task.smp_resp, 1,
+		     PCI_DMA_FROMDEVICE);
+err_out:
+	pci_unmap_sg(mvi->pdev, &tei->task->smp_task.smp_req, 1,
+		     PCI_DMA_TODEVICE);
+	return rc;
+}
+
+static int mvs_task_prep_ata(struct mvs_info *mvi,
+			     struct mvs_task_exec_info *tei)
+{
+	struct sas_task *task = tei->task;
+	struct domain_device *dev = task->dev;
+	struct mvs_cmd_hdr *hdr = tei->hdr;
+	struct asd_sas_port *sas_port = dev->port;
+	unsigned int tag = tei->tag;
+	struct mvs_slot_info *slot = &mvi->slot_info[tag];
+	u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
+	struct scatterlist *sg;
+	struct mvs_prd *buf_prd;
+	void *buf_tmp;
+	u8 *buf_cmd, *buf_oaf;
+	dma_addr_t buf_tmp_dma;
+	unsigned int i, req_len, resp_len;
+
+	/* FIXME: fill in SATA register set */
+	mvi->tx[tag] = cpu_to_le32(TXQ_MODE_I | tag |
+		(TXQ_CMD_STP << TXQ_CMD_SHIFT) |
+		(sas_port->phy_mask << TXQ_PHY_SHIFT));
+
+	if (task->ata_task.use_ncq)
+		flags |= MCH_FPDMA;
+	if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
+		flags |= MCH_ATAPI;
+	/* FIXME: fill in port multiplier number */
+
+	hdr->flags = cpu_to_le32(flags);
+	hdr->tags = cpu_to_le32(tag);
+	hdr->data_len = cpu_to_le32(task->total_xfer_len);
+
+	/*
+	 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
+	 */
+	memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
+
+	/* region 1: command table area (MVS_ATA_CMD_SZ bytes) ***************/
+	buf_cmd =
+	buf_tmp = slot->buf;
+	buf_tmp_dma = slot->buf_dma;
+
+	hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
+
+	buf_tmp += MVS_ATA_CMD_SZ;
+	buf_tmp_dma += MVS_ATA_CMD_SZ;
+
+	/* region 2: open address frame area (MVS_OAF_SZ bytes) **********/
+	/* used for STP.  unused for SATA? */
+	buf_oaf = buf_tmp;
+	hdr->open_frame = cpu_to_le64(buf_tmp_dma);
+
+	buf_tmp += MVS_OAF_SZ;
+	buf_tmp_dma += MVS_OAF_SZ;
+
+	/* region 3: PRD table ***********************************************/
+	buf_prd = buf_tmp;
+	hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
+
+	i = sizeof(struct mvs_prd) * tei->n_elem;
+	buf_tmp += i;
+	buf_tmp_dma += i;
+
+	/* region 4: status buffer (larger the PRD, smaller this buf) ********/
+	/* FIXME: probably unused, for SATA.  kept here just in case
+	 * we get a STP/SATA error information record
+	 */
+	slot->response = buf_tmp;
+	hdr->status_buf = cpu_to_le64(buf_tmp_dma);
+
+	req_len = sizeof(struct ssp_frame_hdr) + 28;
+	resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
+		   sizeof(struct mvs_err_info) - i;
+
+	/* request, response lengths */
+	hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
+
+	/* fill in command FIS and ATAPI CDB */
+	memcpy(buf_cmd, &task->ata_task.fis,
+	       sizeof(struct host_to_dev_fis));
+	memcpy(buf_cmd + 0x40, task->ata_task.atapi_packet, 16);
+
+	/* fill in PRD (scatter/gather) table, if any */
+	sg = task->scatter;
+	for (i = 0; i < tei->n_elem; i++) {
+		buf_prd->addr = cpu_to_le64(sg_dma_address(sg));
+		buf_prd->len = cpu_to_le32(sg_dma_len(sg));
+
+		sg++;
+		buf_prd++;
+	}
+
+	return 0;
+}
+
+static int mvs_task_prep_ssp(struct mvs_info *mvi,
+			     struct mvs_task_exec_info *tei)
+{
+	struct sas_task *task = tei->task;
+	struct asd_sas_port *sas_port = task->dev->port;
+	struct mvs_cmd_hdr *hdr = tei->hdr;
+	struct mvs_slot_info *slot;
+	struct scatterlist *sg;
+	unsigned int resp_len, req_len, i, tag = tei->tag;
+	struct mvs_prd *buf_prd;
+	struct ssp_frame_hdr *ssp_hdr;
+	void *buf_tmp;
+	u8 *buf_cmd, *buf_oaf, fburst = 0;
+	dma_addr_t buf_tmp_dma;
+	u32 flags;
+
+	slot = &mvi->slot_info[tag];
+
+	mvi->tx[tag] = cpu_to_le32(TXQ_MODE_I | tag |
+		(TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
+		(sas_port->phy_mask << TXQ_PHY_SHIFT));
+
+	flags = MCH_RETRY;
+	if (task->ssp_task.enable_first_burst) {
+		flags |= MCH_FBURST;
+		fburst = (1 << 7);
+	}
+	hdr->flags = cpu_to_le32(flags |
+		(tei->n_elem << MCH_PRD_LEN_SHIFT) |
+		(MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT));
+
+	hdr->tags = cpu_to_le32(tag);
+	hdr->data_len = cpu_to_le32(task->total_xfer_len);
+
+	/*
+	 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
+	 */
+	memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
+
+	/* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***************/
+	buf_cmd =
+	buf_tmp = slot->buf;
+	buf_tmp_dma = slot->buf_dma;
+
+	hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
+
+	buf_tmp += MVS_SSP_CMD_SZ;
+	buf_tmp_dma += MVS_SSP_CMD_SZ;
+
+	/* region 2: open address frame area (MVS_OAF_SZ bytes) **********/
+	buf_oaf = buf_tmp;
+	hdr->open_frame = cpu_to_le64(buf_tmp_dma);
+
+	buf_tmp += MVS_OAF_SZ;
+	buf_tmp_dma += MVS_OAF_SZ;
+
+	/* region 3: PRD table ***********************************************/
+	buf_prd = buf_tmp;
+	hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
+
+	i = sizeof(struct mvs_prd) * tei->n_elem;
+	buf_tmp += i;
+	buf_tmp_dma += i;
+
+	/* region 4: status buffer (larger the PRD, smaller this buf) ********/
+	slot->response = buf_tmp;
+	hdr->status_buf = cpu_to_le64(buf_tmp_dma);
+
+	req_len = sizeof(struct ssp_frame_hdr) + 28;
+	resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
+		   sizeof(struct mvs_err_info) - i;
+
+	/* request, response lengths */
+	hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
+
+	/* generate open address frame hdr (first 12 bytes) */
+	buf_oaf[0] = (1 << 7) | (1 << 4) | 0x1;	/* initiator, SSP, ftype 1h */
+	buf_oaf[1] = task->dev->linkrate & 0xf;
+	buf_oaf[2] = tag >> 8;
+	buf_oaf[3] = tag;
+	memcpy(buf_oaf + 4, task->dev->sas_addr, SAS_ADDR_SIZE);
+
+	/* fill in SSP frame header */
+	ssp_hdr = (struct ssp_frame_hdr *) buf_cmd;
+	ssp_hdr->frame_type = SSP_COMMAND;
+	memcpy(ssp_hdr->hashed_dest_addr, task->dev->hashed_sas_addr,
+	       HASHED_SAS_ADDR_SIZE);
+	memcpy(ssp_hdr->hashed_src_addr,
+	       task->dev->port->ha->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
+	ssp_hdr->tag = cpu_to_be16(tag);
+
+	/* fill in command frame IU */
+	buf_cmd += sizeof(*ssp_hdr);
+	memcpy(buf_cmd, &task->ssp_task.LUN, 8);
+	buf_cmd[9] = fburst |
+		task->ssp_task.task_attr |
+		(task->ssp_task.task_prio << 3);
+	memcpy(buf_cmd + 12, &task->ssp_task.cdb, 16);
+
+	/* fill in PRD (scatter/gather) table, if any */
+	sg = task->scatter;
+	for (i = 0; i < tei->n_elem; i++) {
+		buf_prd->addr = cpu_to_le64(sg_dma_address(sg));
+		buf_prd->len = cpu_to_le32(sg_dma_len(sg));
+
+		sg++;
+		buf_prd++;
+	}
+
+	return 0;
+}
+
+static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags)
+{
+	struct mvs_info *mvi = task->dev->port->ha->lldd_ha;
+	unsigned int tag = 0xdeadbeef, rc, n_elem = 0;
+	void __iomem *regs = mvi->regs;
+	unsigned long flags;
+	struct mvs_task_exec_info tei;
+
+	/* FIXME: STP/SATA support not complete yet */
+	if (task->task_proto == SAS_PROTOCOL_SATA || task->task_proto == SAS_PROTOCOL_STP)
+		return -SAS_DEV_NO_RESPONSE;
+
+	if (task->num_scatter) {
+		n_elem = pci_map_sg(mvi->pdev, task->scatter,
+				    task->num_scatter, task->data_dir);
+		if (!n_elem)
+			return -ENOMEM;
+	}
+
+	spin_lock_irqsave(&mvi->lock, flags);
+
+	rc = mvs_tag_alloc(mvi, &tag);
+	if (rc)
+		goto err_out;
+
+	mvi->slot_info[tag].task = task;
+	mvi->slot_info[tag].n_elem = n_elem;
+	tei.task = task;
+	tei.hdr = &mvi->slot[tag];
+	tei.tag = tag;
+	tei.n_elem = n_elem;
+
+	switch (task->task_proto) {
+	case SAS_PROTOCOL_SMP:
+		rc = mvs_task_prep_smp(mvi, &tei);
+		break;
+	case SAS_PROTOCOL_SSP:
+		rc = mvs_task_prep_ssp(mvi, &tei);
+		break;
+	case SAS_PROTOCOL_SATA:
+	case SAS_PROTOCOL_STP:
+		rc = mvs_task_prep_ata(mvi, &tei);
+		break;
+	default:
+		rc = -EINVAL;
+		break;
+	}
+
+	if (rc)
+		goto err_out_tag;
+
+	/* TODO: select normal or high priority */
+
+	mw32(RX_PROD_IDX, mvi->tx_prod);
+
+	mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_TX_RING_SZ - 1);
+
+	spin_lock(&task->task_state_lock);
+	task->task_state_flags |= SAS_TASK_AT_INITIATOR;
+	spin_unlock(&task->task_state_lock);
+
+	spin_unlock_irqrestore(&mvi->lock, flags);
+	return 0;
+
+err_out_tag:
+	mvs_tag_clear(mvi, tag);
+err_out:
+	if (n_elem)
+		pci_unmap_sg(mvi->pdev, task->scatter, n_elem, task->data_dir);
+	spin_unlock_irqrestore(&mvi->lock, flags);
+	return rc;
+}
+
+static void mvs_free(struct mvs_info *mvi)
+{
+	int i;
+
+	if (!mvi)
+		return;
+
+	for (i = 0; i < MVS_SLOTS; i++) {
+		struct mvs_slot_info *slot = &mvi->slot_info[i];
+
+		if (slot->buf)
+			dma_free_coherent(&mvi->pdev->dev, MVS_SLOT_BUF_SZ,
+					  slot->buf, slot->buf_dma);
+	}
+
+	if (mvi->tx)
+		dma_free_coherent(&mvi->pdev->dev,
+				  sizeof(*mvi->tx) * MVS_TX_RING_SZ,
+				  mvi->tx, mvi->tx_dma);
+	if (mvi->rx_fis)
+		dma_free_coherent(&mvi->pdev->dev, MVS_RX_FISL_SZ,
+				  mvi->rx_fis, mvi->rx_fis_dma);
+	if (mvi->rx)
+		dma_free_coherent(&mvi->pdev->dev,
+				  sizeof(*mvi->rx) * MVS_RX_RING_SZ,
+				  mvi->rx, mvi->rx_dma);
+	if (mvi->slot)
+		dma_free_coherent(&mvi->pdev->dev,
+				  sizeof(*mvi->slot) * MVS_RX_RING_SZ,
+				  mvi->slot, mvi->slot_dma);
+	if (mvi->peri_regs)
+		iounmap(mvi->peri_regs);
+	if (mvi->regs)
+		iounmap(mvi->regs);
+	if (mvi->shost)
+		scsi_host_put(mvi->shost);
+	kfree(mvi->sas.sas_port);
+	kfree(mvi->sas.sas_phy);
+	kfree(mvi);
+}
+
+/* FIXME: locking? */
+static int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
+			   void *funcdata)
+{
+	struct mvs_info *mvi = sas_phy->ha->lldd_ha;
+	void __iomem *reg;
+	int rc = 0, phy_id = sas_phy->id;
+	u32 tmp;
+
+	reg = mvi->regs + MVS_P0_SER_CTLSTAT + (phy_id * 4);
+
+	switch (func) {
+	case PHY_FUNC_SET_LINK_RATE: {
+		struct sas_phy_linkrates *rates = funcdata;
+		u32 lrmin = 0, lrmax = 0;
+
+		lrmin = (rates->minimum_linkrate << 8);
+		lrmax = (rates->maximum_linkrate << 12);
+
+		tmp = readl(reg);
+		if (lrmin) {
+			tmp &= ~(0xf << 8);
+			tmp |= lrmin;
+		}
+		if (lrmax) {
+			tmp &= ~(0xf << 12);
+			tmp |= lrmax;
+		}
+		writel(tmp, reg);
+		break;
+	}
+
+	case PHY_FUNC_HARD_RESET:
+		tmp = readl(reg);
+		if (tmp & PHY_RST_HARD)
+			break;
+		writel(tmp | PHY_RST_HARD, reg);
+		break;
+
+	case PHY_FUNC_LINK_RESET:
+		writel(readl(reg) | PHY_RST, reg);
+		break;
+
+	case PHY_FUNC_DISABLE:
+	case PHY_FUNC_RELEASE_SPINUP_HOLD:
+	default:
+		rc = -EOPNOTSUPP;
+	}
+
+	return rc;
+}
+
+static void __devinit mvs_phy_init(struct mvs_info *mvi, int phy_id)
+{
+	struct mvs_phy *phy = &mvi->phy[phy_id];
+	struct asd_sas_phy *sas_phy = &phy->sas_phy;
+
+	sas_phy->enabled = (phy_id < mvi->chip->n_phy) ? 1 : 0;
+	sas_phy->class = SAS;
+	sas_phy->iproto = SAS_PROTOCOL_ALL;
+	sas_phy->tproto = 0;
+	sas_phy->type = PHY_TYPE_PHYSICAL;
+	sas_phy->role = PHY_ROLE_INITIATOR;
+	sas_phy->oob_mode = OOB_NOT_CONNECTED;
+	sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
+
+	sas_phy->id = phy_id;
+	sas_phy->sas_addr = &mvi->sas_addr[0];
+	sas_phy->frame_rcvd = &phy->frame_rcvd[0];
+	sas_phy->ha = &mvi->sas;
+	sas_phy->lldd_phy = phy;
+}
+
+static struct mvs_info * __devinit mvs_alloc(struct pci_dev *pdev,
+				const struct pci_device_id *ent)
+{
+	struct mvs_info *mvi;
+	unsigned long res_start, res_len;
+	struct asd_sas_phy **arr_phy;
+	struct asd_sas_port **arr_port;
+	const struct mvs_chip_info *chip = &mvs_chips[ent->driver_data];
+	int i;
+
+	/*
+	 * alloc and init our per-HBA mvs_info struct
+	 */
+
+	mvi = kzalloc(sizeof(*mvi), GFP_KERNEL);
+	if (!mvi)
+		return NULL;
+
+	spin_lock_init(&mvi->lock);
+	mvi->pdev = pdev;
+	mvi->chip = chip;
+
+	if (pdev->device == 0x6440 && pdev->revision == 0)
+		mvi->flags |= MVF_PHY_PWR_FIX;
+
+	/*
+	 * alloc and init SCSI, SAS glue
+	 */
+
+	mvi->shost = scsi_host_alloc(&mvs_sht, sizeof(void *));
+	if (!mvi->shost)
+		goto err_out;
+
+	arr_phy = kcalloc(MVS_MAX_PHYS, sizeof(void *), GFP_KERNEL);
+	arr_port = kcalloc(MVS_MAX_PHYS, sizeof(void *), GFP_KERNEL);
+	if (!arr_phy || !arr_port)
+		goto err_out;
+
+	for (i = 0; i < MVS_MAX_PHYS; i++) {
+		mvs_phy_init(mvi, i);
+		arr_phy[i] = &mvi->phy[i].sas_phy;
+		arr_port[i] = &mvi->port[i].sas_port;
+	}
+
+	SHOST_TO_SAS_HA(mvi->shost) = &mvi->sas;
+	mvi->shost->transportt = mvs_stt;
+	mvi->shost->max_id = ~0;
+	mvi->shost->max_lun = ~0;
+	mvi->shost->max_cmd_len = ~0;
+
+	mvi->sas.sas_ha_name = DRV_NAME;
+	mvi->sas.dev = &pdev->dev;
+	mvi->sas.lldd_module = THIS_MODULE;
+	mvi->sas.sas_addr = &mvi->sas_addr[0];
+	mvi->sas.sas_phy = arr_phy;
+	mvi->sas.sas_port = arr_port;
+	mvi->sas.num_phys = chip->n_phy;
+	mvi->sas.lldd_max_execute_num = MVS_TX_RING_SZ - 1;/* FIXME: correct? */
+	mvi->sas.lldd_queue_size = MVS_TX_RING_SZ - 1;	   /* FIXME: correct? */
+	mvi->sas.lldd_ha = mvi;
+	mvi->sas.core.shost = mvi->shost;
+
+	mvs_tag_set(mvi, MVS_TX_RING_SZ - 1);
+
+	/*
+	 * ioremap main and peripheral registers
+	 */
+
+	res_start = pci_resource_start(pdev, 2);
+	res_len = pci_resource_len(pdev, 2);
+	if (!res_start || !res_len)
+		goto err_out;
+
+	mvi->peri_regs = ioremap_nocache(res_start, res_len);
+	if (!mvi->regs)
+		goto err_out;
+
+	res_start = pci_resource_start(pdev, 4);
+	res_len = pci_resource_len(pdev, 4);
+	if (!res_start || !res_len)
+		goto err_out;
+
+	mvi->regs = ioremap_nocache(res_start, res_len);
+	if (!mvi->regs)
+		goto err_out;
+
+	/*
+	 * alloc and init our DMA areas
+	 */
+
+	mvi->tx = dma_alloc_coherent(&pdev->dev,
+				     sizeof(*mvi->tx) * MVS_TX_RING_SZ,
+				     &mvi->tx_dma, GFP_KERNEL);
+	if (!mvi->tx)
+		goto err_out;
+	memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_TX_RING_SZ);
+
+	mvi->rx_fis = dma_alloc_coherent(&pdev->dev, MVS_RX_FISL_SZ,
+				     &mvi->rx_fis_dma, GFP_KERNEL);
+	if (!mvi->rx_fis)
+		goto err_out;
+	memset(mvi->rx_fis, 0, MVS_RX_FISL_SZ);
+
+	mvi->rx = dma_alloc_coherent(&pdev->dev,
+				     sizeof(*mvi->rx) * MVS_RX_RING_SZ,
+				     &mvi->rx_dma, GFP_KERNEL);
+	if (!mvi->rx)
+		goto err_out;
+	memset(mvi->rx, 0, sizeof(*mvi->rx) * MVS_RX_RING_SZ);
+
+	mvi->rx[0] = cpu_to_le32(0xfff);
+	mvi->rx_cons = 0xfff;
+
+	mvi->slot = dma_alloc_coherent(&pdev->dev,
+				       sizeof(*mvi->slot) * MVS_SLOTS,
+				       &mvi->slot_dma, GFP_KERNEL);
+	if (!mvi->slot)
+		goto err_out;
+	memset(mvi->slot, 0, sizeof(*mvi->slot) * MVS_SLOTS);
+
+	for (i = 0; i < MVS_SLOTS; i++) {
+		struct mvs_slot_info *slot = &mvi->slot_info[i];
+
+		slot->buf = dma_alloc_coherent(&pdev->dev, MVS_SLOT_BUF_SZ,
+				       &slot->buf_dma, GFP_KERNEL);
+		if (!slot->buf)
+			goto err_out;
+		memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
+	}
+
+	/* finally, read NVRAM to get our SAS address */
+	if (mvs_nvram_read(mvi, NVR_SAS_ADDR, &mvi->sas_addr, 8))
+		goto err_out;
+
+	return mvi;
+
+err_out:
+	mvs_free(mvi);
+	return NULL;
+}
+
+static u32 mvs_cr32(void __iomem *regs, u32 addr)
+{
+	mw32(CMD_ADDR, addr);
+	return mr32(CMD_DATA);
+}
+
+static void mvs_cw32(void __iomem *regs, u32 addr, u32 val)
+{
+	mw32(CMD_ADDR, addr);
+	mw32(CMD_DATA, val);
+}
+
+#if 0
+static u32 mvs_phy_read(struct mvs_info *mvi, unsigned int phy_id, u32 addr)
+{
+	void __iomem *regs = mvi->regs;
+	void __iomem *phy_regs = regs + MVS_P0_CFG_ADDR + (phy_id * 8);
+
+	writel(addr, phy_regs);
+	return readl(phy_regs + 4);
+}
+#endif
+
+static void mvs_phy_write(struct mvs_info *mvi, unsigned int phy_id,
+			  u32 addr, u32 val)
+{
+	void __iomem *regs = mvi->regs;
+	void __iomem *phy_regs = regs + MVS_P0_CFG_ADDR + (phy_id * 8);
+
+	writel(addr, phy_regs);
+	writel(val, phy_regs + 4);
+	readl(phy_regs);	/* flush */
+}
+
+static void __devinit mvs_phy_hacks(struct mvs_info *mvi)
+{
+	void __iomem *regs = mvi->regs;
+	u32 tmp;
+
+	/* workaround for SATA R-ERR, to ignore phy glitch */
+	tmp = mvs_cr32(regs, CMD_PHY_TIMER);
+	tmp &= ~(1 << 9);
+	tmp |= (1 << 10);
+	mvs_cw32(regs, CMD_PHY_TIMER, tmp);
+
+	/* enable retry 127 times */
+	mvs_cw32(regs, CMD_SAS_CTL1, 0x7f7f);
+
+	/* extend open frame timeout to max */
+	tmp = mvs_cr32(regs, CMD_SAS_CTL0);
+	tmp &= ~0xffff;
+	tmp |= 0x3fff;
+	mvs_cw32(regs, CMD_SAS_CTL0, tmp);
+
+	/* workaround for WDTIMEOUT , set to 550 ms */
+	mvs_cw32(regs, CMD_WD_TIMER, 0xffffff);
+
+	/* not to halt for different port op during wideport link change */
+	mvs_cw32(regs, CMD_APP_ERR_CONFIG, 0xffefbf7d);
+
+	/* workaround for Seagate disk not-found OOB sequence, recv
+	 * COMINIT before sending out COMWAKE */
+	tmp = mvs_cr32(regs, CMD_PHY_MODE_21);
+	tmp &= 0x0000ffff;
+	tmp |= 0x00fa0000;
+	mvs_cw32(regs, CMD_PHY_MODE_21, tmp);
+
+	tmp = mvs_cr32(regs, CMD_PHY_TIMER);
+	tmp &= 0x1fffffff;
+	tmp |= (2U << 29);	/* 8 ms retry */
+	mvs_cw32(regs, CMD_PHY_TIMER, tmp);
+}
+
+static int __devinit mvs_hw_init(struct mvs_info *mvi)
+{
+	void __iomem *regs = mvi->regs;
+	int i;
+	u32 tmp, cctl;
+
+	/* make sure interrupts are masked immediately (paranoia) */
+	mw32(GBL_CTL, 0);
+	tmp = mr32(GBL_CTL);
+
+	if (!(tmp & HBA_RST)) {
+		if (mvi->flags & MVF_PHY_PWR_FIX) {
+			pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
+			tmp &= ~PCTL_PWR_ON;
+			tmp |= PCTL_OFF;
+			pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);
+
+			pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &tmp);
+			tmp &= ~PCTL_PWR_ON;
+			tmp |= PCTL_OFF;
+			pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
+		}
+
+		/* global reset, incl. COMRESET/H_RESET_N (self-clearing) */
+		mw32_f(GBL_CTL, HBA_RST);
+	}
+
+
+	/* wait for reset to finish; timeout is just a guess */
+	i = 1000;
+	while (i-- > 0) {
+		msleep(10);
+
+		if (!(mr32(GBL_CTL) & HBA_RST))
+			break;
+	}
+	if (mr32(GBL_CTL) & HBA_RST) {
+		dev_printk(KERN_ERR, &mvi->pdev->dev, "HBA reset failed\n");
+		return -EBUSY;
+	}
+
+	/* make sure RST is set; HBA_RST /should/ have done that for us */
+	cctl = mr32(CTL);
+	if (cctl & CCTL_RST)
+		cctl &= ~CCTL_RST;
+	else
+		mw32_f(CTL, cctl | CCTL_RST);
+
+	pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
+	tmp |= PCTL_PWR_ON;
+	tmp &= ~PCTL_OFF;
+	pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);
+
+	pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &tmp);
+	tmp |= PCTL_PWR_ON;
+	tmp &= ~PCTL_OFF;
+	pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
+
+	mw32_f(CTL, cctl);
+
+	mvs_phy_hacks(mvi);
+
+	mw32(CMD_LIST_LO, mvi->slot_dma);
+	mw32(CMD_LIST_HI, (mvi->slot_dma >> 16) >> 16);
+
+	mw32(RX_FIS_LO, mvi->rx_fis_dma);
+	mw32(RX_FIS_HI, (mvi->rx_fis_dma >> 16) >> 16);
+
+	mw32(TX_CFG, MVS_TX_RING_SZ);
+	mw32(TX_LO, mvi->tx_dma);
+	mw32(TX_HI, (mvi->tx_dma >> 16) >> 16);
+
+	mw32(RX_CFG, MVS_RX_RING_SZ);
+	mw32(RX_LO, mvi->rx_dma);
+	mw32(RX_HI, (mvi->rx_dma >> 16) >> 16);
+
+	/* init and reset phys */
+	for (i = 0; i < mvi->chip->n_phy; i++) {
+		/* FIXME: is this the correct dword order? */
+		u32 lo = *((u32 *) &mvi->sas_addr[0]);
+		u32 hi = *((u32 *) &mvi->sas_addr[4]);
+
+		/* set phy local SAS address */
+		mvs_phy_write(mvi, i, PHYR_ADDR_LO, lo);
+		mvs_phy_write(mvi, i, PHYR_ADDR_HI, hi);
+
+		/* reset phy */
+		tmp = readl(regs + MVS_P0_SER_CTLSTAT + (i * 4));
+		tmp |= PHY_RST;
+		writel(tmp, regs + MVS_P0_SER_CTLSTAT + (i * 4));
+	}
+
+	msleep(100);
+
+	for (i = 0; i < mvi->chip->n_phy; i++) {
+		/* set phy int mask */
+		writel(PHYEV_BROAD_CH | PHYEV_RDY_CH,
+		       regs + MVS_P0_INT_MASK + (i * 8));
+
+		/* clear phy int status */
+		tmp = readl(regs + MVS_P0_INT_STAT + (i * 8));
+		writel(tmp, regs + MVS_P0_INT_STAT + (i * 8));
+	}
+
+	/* FIXME: update wide port bitmaps */
+
+	/* ladies and gentlemen, start your engines */
+	mw32(TX_CFG, MVS_TX_RING_SZ | TX_EN);
+	mw32(RX_CFG, MVS_RX_RING_SZ | RX_EN);
+	mw32(PCS, PCS_SATA_RETRY | PCS_FIS_RX_EN | PCS_CMD_EN |
+	     ((mvi->flags & MVF_MSI) ? PCS_SELF_CLEAR : 0));
+
+	/* re-enable interrupts globally */
+	mw32(GBL_CTL, INT_EN);
+
+	return 0;
+}
+
+static void __devinit mvs_print_info(struct mvs_info *mvi)
+{
+	struct pci_dev *pdev = mvi->pdev;
+	static int printed_version;
+
+	if (!printed_version++)
+		dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
+
+	dev_printk(KERN_INFO, &pdev->dev, "%u phys, addr %llx\n",
+		   mvi->chip->n_phy, SAS_ADDR(mvi->sas_addr));
+}
+
+static int __devinit mvs_pci_init(struct pci_dev *pdev,
+				 const struct pci_device_id *ent)
+{
+	int rc;
+	struct mvs_info *mvi;
+	irq_handler_t irq_handler = mvs_interrupt;
+
+	rc = pci_enable_device(pdev);
+	if (rc)
+		return rc;
+
+	pci_set_master(pdev);
+
+	rc = pci_request_regions(pdev, DRV_NAME);
+	if (rc)
+		goto err_out_disable;
+
+	rc = pci_go_64(pdev);
+	if (rc)
+		goto err_out_regions;
+
+	mvi = mvs_alloc(pdev, ent);
+	if (!mvi) {
+		rc = -ENOMEM;
+		goto err_out_regions;
+	}
+
+	rc = mvs_hw_init(mvi);
+	if (rc)
+		goto err_out_mvi;
+
+	if (!pci_enable_msi(pdev)) {
+		mvi->flags |= MVF_MSI;
+		irq_handler = mvs_msi_interrupt;
+	}
+
+	rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED, DRV_NAME, mvi);
+	if (rc)
+		goto err_out_msi;
+
+	rc = scsi_add_host(mvi->shost, &pdev->dev);
+	if (rc)
+		goto err_out_irq;
+
+	rc = sas_register_ha(&mvi->sas);
+	if (rc)
+		goto err_out_shost;
+
+	pci_set_drvdata(pdev, mvi);
+
+	mvs_print_info(mvi);
+
+	scsi_scan_host(mvi->shost);
+	return 0;
+
+err_out_shost:
+	scsi_remove_host(mvi->shost);
+err_out_irq:
+	free_irq(pdev->irq, mvi);
+err_out_msi:
+	if (mvi->flags |= MVF_MSI)
+		pci_disable_msi(pdev);
+err_out_mvi:
+	mvs_free(mvi);
+err_out_regions:
+	pci_release_regions(pdev);
+err_out_disable:
+	pci_disable_device(pdev);
+	return rc;
+}
+
+static void __devexit mvs_pci_remove(struct pci_dev *pdev)
+{
+	struct mvs_info *mvi = pci_get_drvdata(pdev);
+
+	pci_set_drvdata(pdev, NULL);
+
+	sas_unregister_ha(&mvi->sas);
+	sas_remove_host(mvi->shost);
+	scsi_remove_host(mvi->shost);
+
+	free_irq(pdev->irq, mvi);
+	if (mvi->flags & MVF_MSI)
+		pci_disable_msi(pdev);
+	mvs_free(mvi);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+}
+
+static struct sas_domain_function_template mvs_transport_ops = {
+	.lldd_execute_task	= mvs_task_exec,
+	.lldd_control_phy	= mvs_phy_control,
+};
+
+static struct pci_device_id __devinitdata mvs_pci_table[] = {
+	{ PCI_VDEVICE(MARVELL, 0x6320), chip_6320 },
+	{ PCI_VDEVICE(MARVELL, 0x6340), chip_6440 },
+	{ PCI_VDEVICE(MARVELL, 0x6440), chip_6440 },
+	{ PCI_VDEVICE(MARVELL, 0x6480), chip_6480 },
+
+	{ }	/* terminate list */
+};
+
+static struct pci_driver mvs_pci_driver = {
+	.name		= DRV_NAME,
+	.id_table	= mvs_pci_table,
+	.probe		= mvs_pci_init,
+	.remove		= __devexit_p(mvs_pci_remove),
+};
+
+static int __init mvs_init(void)
+{
+	int rc;
+
+	mvs_stt = sas_domain_attach_transport(&mvs_transport_ops);
+	if (!mvs_stt)
+		return -ENOMEM;
+
+	rc = pci_register_driver(&mvs_pci_driver);
+	if (rc)
+		goto err_out;
+
+	return 0;
+
+err_out:
+	sas_release_transport(mvs_stt);
+	return rc;
+}
+
+static void __exit mvs_exit(void)
+{
+	pci_unregister_driver(&mvs_pci_driver);
+	sas_release_transport(mvs_stt);
+}
+
+module_init(mvs_init);
+module_exit(mvs_exit);
+
+MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
+MODULE_DESCRIPTION("Marvell 88SE6440 SAS/SATA controller driver");
+MODULE_VERSION(DRV_VERSION);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, mvs_pci_table);
+