[SCSI] mvsas: convert from rough draft to working driver

Convert rough draft Marvell 6440 driver to a working driver.
Added support for SAS and SATA devices, hotplug, wide port, and expanders.

Signed-off-by: Ke Wei <kewei@marvell.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 1469 insertions, 313 deletions

diff --git a/drivers/scsi/mvsas.c b/drivers/scsi/mvsas.c
index 03638b9bb283..30e20e69715a 100644..100755
--- a/drivers/scsi/mvsas.c
+++ b/drivers/scsi/mvsas.c
@@ -2,6 +2,7 @@
 	mvsas.c - Marvell 88SE6440 SAS/SATA support
 
 	Copyright 2007 Red Hat, Inc.
+	Copyright 2008 Marvell. <kewei@marvell.com>
 
 	This program is free software; you can redistribute it and/or
 	modify it under the terms of the GNU General Public License as
@@ -37,16 +38,35 @@
 #include <scsi/libsas.h>
 #include <asm/io.h>
 
-#define DRV_NAME "mvsas"
-#define DRV_VERSION "0.1"
+#define DRV_NAME	"mvsas"
+#define DRV_VERSION	"0.5"
+#define _MV_DUMP 0
+#define MVS_DISABLE_NVRAM
+#define MVS_DISABLE_MSI
 
 #define mr32(reg)	readl(regs + MVS_##reg)
 #define mw32(reg,val)	writel((val), regs + MVS_##reg)
-#define mw32_f(reg,val)	do {		\
+#define mw32_f(reg,val)	do {			\
 	writel((val), regs + MVS_##reg);	\
 	readl(regs + MVS_##reg);		\
 	} while (0)
 
+#define MVS_ID_NOT_MAPPED	0xff
+#define MVS_CHIP_SLOT_SZ	(1U << mvi->chip->slot_width)
+
+/* offset for D2H FIS in the Received FIS List Structure */
+#define SATA_RECEIVED_D2H_FIS(reg_set)	\
+	((void *) mvi->rx_fis + 0x400 + 0x100 * reg_set + 0x40)
+#define SATA_RECEIVED_PIO_FIS(reg_set)	\
+	((void *) mvi->rx_fis + 0x400 + 0x100 * reg_set + 0x20)
+#define UNASSOC_D2H_FIS(id)		\
+	((void *) mvi->rx_fis + 0x100 * id)
+
+#define for_each_phy(__lseq_mask, __mc, __lseq, __rest)			\
+	for ((__mc) = (__lseq_mask), (__lseq) = 0;			\
+					(__mc) != 0 && __rest;		\
+					(++__lseq), (__mc) >>= 1)
+
 /* driver compile-time configuration */
 enum driver_configuration {
 	MVS_TX_RING_SZ		= 1024,	/* TX ring size (12-bit) */
@@ -57,10 +77,12 @@ enum driver_configuration {
 	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_ATA_CMD_SZ		= 96,	/* 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) */
+
+	MVS_QUEUE_SIZE		= 30,	/* Support Queue depth */
 };
 
 /* unchangeable hardware details */
@@ -89,7 +111,7 @@ 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_GBL_PORT_TYPE	= 0xa0,  /* port type */
 
 	MVS_CTL			= 0x100, /* SAS/SATA port configuration */
 	MVS_PCS			= 0x104, /* SAS/SATA port control/status */
@@ -102,24 +124,29 @@ enum hw_registers {
 	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_TX_PROD_IDX		= 0x12C, /* TX producer pointer */
+	MVS_TX_CONS_IDX		= 0x130, /* TX consumer pointer (RO) */
 	MVS_RX_CFG		= 0x134, /* RX configuration */
 	MVS_RX_LO		= 0x138, /* RX (completion) ring addr */
 	MVS_RX_HI		= 0x13C,
+	MVS_RX_CONS_IDX		= 0x140, /* RX consumer pointer (RO) */
 
 	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 */
+	MVS_INT_MASK_SRS	= 0x15C,
 
 					 /* ports 1-3 follow after this */
 	MVS_P0_INT_STAT		= 0x160, /* port0 interrupt status */
 	MVS_P0_INT_MASK		= 0x164, /* port0 interrupt mask */
+	MVS_P4_INT_STAT		= 0x200, /* Port 4 interrupt status */
+	MVS_P4_INT_MASK		= 0x204, /* Port 4 interrupt enable mask */
 
 					 /* ports 1-3 follow after this */
 	MVS_P0_SER_CTLSTAT	= 0x180, /* port0 serial control/status */
+	MVS_P4_SER_CTLSTAT	= 0x220, /* port4 serial control/status */
 
 	MVS_CMD_ADDR		= 0x1B8, /* Command register port (addr) */
 	MVS_CMD_DATA		= 0x1BC, /* Command register port (data) */
@@ -127,6 +154,14 @@ enum hw_registers {
 					 /* ports 1-3 follow after this */
 	MVS_P0_CFG_ADDR		= 0x1C0, /* port0 phy register address */
 	MVS_P0_CFG_DATA		= 0x1C4, /* port0 phy register data */
+	MVS_P4_CFG_ADDR		= 0x230, /* Port 4 config address */
+	MVS_P4_CFG_DATA		= 0x234, /* Port 4 config data */
+
+					 /* ports 1-3 follow after this */
+	MVS_P0_VSR_ADDR		= 0x1E0, /* port0 VSR address */
+	MVS_P0_VSR_DATA		= 0x1E4, /* port0 VSR data */
+	MVS_P4_VSR_ADDR		= 0x250, /* port 4 VSR addr */
+	MVS_P4_VSR_DATA		= 0x254, /* port 4 VSR data */
 };
 
 enum hw_register_bits {
@@ -140,12 +175,35 @@ enum hw_register_bits {
 
 	/* 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
-						 */
+	MODE_AUTO_DET_PORT7 = (1U << 15),	/* port0 SAS/SATA autodetect */
+	MODE_AUTO_DET_PORT6 = (1U << 14),
+	MODE_AUTO_DET_PORT5 = (1U << 13),
+	MODE_AUTO_DET_PORT4 = (1U << 12),
+	MODE_AUTO_DET_PORT3 = (1U << 11),
+	MODE_AUTO_DET_PORT2 = (1U << 10),
+	MODE_AUTO_DET_PORT1 = (1U << 9),
+	MODE_AUTO_DET_PORT0 = (1U << 8),
+	MODE_AUTO_DET_EN    =	MODE_AUTO_DET_PORT0 | MODE_AUTO_DET_PORT1 |
+				MODE_AUTO_DET_PORT2 | MODE_AUTO_DET_PORT3 |
+				MODE_AUTO_DET_PORT4 | MODE_AUTO_DET_PORT5 |
+				MODE_AUTO_DET_PORT6 | MODE_AUTO_DET_PORT7,
+	MODE_SAS_PORT7_MASK = (1U << 7),  /* port0 SAS(1), SATA(0) mode */
+	MODE_SAS_PORT6_MASK = (1U << 6),
+	MODE_SAS_PORT5_MASK = (1U << 5),
+	MODE_SAS_PORT4_MASK = (1U << 4),
+	MODE_SAS_PORT3_MASK = (1U << 3),
+	MODE_SAS_PORT2_MASK = (1U << 2),
+	MODE_SAS_PORT1_MASK = (1U << 1),
+	MODE_SAS_PORT0_MASK = (1U << 0),
+	MODE_SAS_SATA	=	MODE_SAS_PORT0_MASK | MODE_SAS_PORT1_MASK |
+				MODE_SAS_PORT2_MASK | MODE_SAS_PORT3_MASK |
+				MODE_SAS_PORT4_MASK | MODE_SAS_PORT5_MASK |
+				MODE_SAS_PORT6_MASK | MODE_SAS_PORT7_MASK,
+
+				/* SAS_MODE value may be
+				 * dictated (in hw) by values
+				 * of SATA_TARGET & AUTO_DET
+				 */
 
 	/* MVS_TX_CFG */
 	TX_EN			= (1U << 16),	/* Enable TX */
@@ -167,12 +225,14 @@ enum hw_register_bits {
 	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_CI_STOP		= (1U << 1),	/* 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 */
+	CINT_PORT_MASK_OFFSET	= 8,
+	CINT_PORT_MASK		= (0xFF << CINT_PORT_MASK_OFFSET),
 
 	/* TX (delivery) ring bits */
 	TXQ_CMD_SHIFT		= 29,
@@ -239,8 +299,15 @@ enum hw_register_bits {
 	PHY_BCAST_CHG		= (1U << 2),	/* broadcast(change) notif */
 	PHY_RST_HARD		= (1U << 1),	/* hard reset + phy reset */
 	PHY_RST			= (1U << 0),	/* phy reset */
+	PHY_MIN_SPP_PHYS_LINK_RATE_MASK = (0xF << 8),
+	PHY_MAX_SPP_PHYS_LINK_RATE_MASK = (0xF << 12),
+	PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET = (16),
+	PHY_NEG_SPP_PHYS_LINK_RATE_MASK =
+			(0xF << PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET),
+	PHY_READY_MASK		= (1U << 20),
 
 	/* MVS_Px_INT_STAT, MVS_Px_INT_MASK (per-phy events) */
+	PHYEV_DEC_ERR		= (1U << 24),	/* Phy Decoding Error */
 	PHYEV_UNASSOC_FIS	= (1U << 19),	/* unassociated FIS rx'd */
 	PHYEV_AN		= (1U << 18),	/* SATA async notification */
 	PHYEV_BIST_ACT		= (1U << 17),	/* BIST activate FIS */
@@ -260,13 +327,37 @@ enum hw_register_bits {
 	PHYEV_RDY_CH		= (1U << 0),	/* phy ready changed state */
 
 	/* MVS_PCS */
+	PCS_EN_SATA_REG_SHIFT	= (16),		/* Enable SATA Register Set */
+	PCS_EN_PORT_XMT_SHIFT	= (12),		/* Enable Port Transmit */
+	PCS_EN_PORT_XMT_SHIFT2	= (8),		/* For 6480 */
 	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_RST		= (1U << 1),	/* reset cmd issue */
 	PCS_CMD_EN		= (1U << 0),	/* enable cmd issue */
+
+	/* Port n Attached Device Info */
+	PORT_DEV_SSP_TRGT	= (1U << 19),
+	PORT_DEV_SMP_TRGT	= (1U << 18),
+	PORT_DEV_STP_TRGT	= (1U << 17),
+	PORT_DEV_SSP_INIT	= (1U << 11),
+	PORT_DEV_SMP_INIT	= (1U << 10),
+	PORT_DEV_STP_INIT	= (1U << 9),
+	PORT_PHY_ID_MASK	= (0xFFU << 24),
+	PORT_DEV_TRGT_MASK	= (0x7U << 17),
+	PORT_DEV_INIT_MASK	= (0x7U << 9),
+	PORT_DEV_TYPE_MASK	= (0x7U << 0),
+
+	/* Port n PHY Status */
+	PHY_RDY			= (1U << 2),
+	PHY_DW_SYNC		= (1U << 1),
+	PHY_OOB_DTCTD		= (1U << 0),
+
+	/* VSR */
+	/* PHYMODE 6 (CDB) */
+	PHY_MODE6_DTL_SPEED	= (1U << 27),
 };
 
 enum mvs_info_flags {
@@ -329,33 +420,60 @@ enum sas_cmd_port_registers {
 
 /* 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_IDENTIFY		= 0x00,	/* info for IDENTIFY frame */
+	PHYR_ADDR_LO		= 0x04,	/* my SAS address (low) */
+	PHYR_ADDR_HI		= 0x08,	/* my SAS address (high) */
+	PHYR_ATT_DEV_INFO	= 0x0C,	/* 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_SATA_SIG0		= 0x20,	/*port SATA signature FIS(Byte 0-3) */
+	PHYR_SATA_SIG1		= 0x24,	/*port SATA signature FIS(Byte 4-7) */
+	PHYR_SATA_SIG2		= 0x28,	/*port SATA signature FIS(Byte 8-11) */
+	PHYR_SATA_SIG3		= 0x2c,	/*port SATA signature FIS(Byte 12-15) */
+	PHYR_R_ERR_COUNT	= 0x30, /* port R_ERR count register */
+	PHYR_CRC_ERR_COUNT	= 0x34, /* port CRC error count register */
 	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 */
 };
 
+/*  SAS/SATA Vendor Specific Port Registers */
+enum sas_sata_vsp_regs {
+	VSR_PHY_STAT		= 0x00, /* Phy Status */
+	VSR_PHY_MODE1		= 0x01, /* phy tx */
+	VSR_PHY_MODE2		= 0x02, /* tx scc */
+	VSR_PHY_MODE3		= 0x03, /* pll */
+	VSR_PHY_MODE4		= 0x04, /* VCO */
+	VSR_PHY_MODE5		= 0x05, /* Rx */
+	VSR_PHY_MODE6		= 0x06, /* CDR */
+	VSR_PHY_MODE7		= 0x07, /* Impedance */
+	VSR_PHY_MODE8		= 0x08, /* Voltage */
+	VSR_PHY_MODE9		= 0x09, /* Test */
+	VSR_PHY_MODE10		= 0x0A, /* Power */
+	VSR_PHY_MODE11		= 0x0B, /* Phy Mode */
+	VSR_PHY_VS0		= 0x0C, /* Vednor Specific 0 */
+	VSR_PHY_VS1		= 0x0D, /* Vednor Specific 1 */
+};
+
 enum pci_cfg_registers {
-	PCR_PHY_CTL		= 0x40,
-	PCR_PHY_CTL2		= 0x90,
+	PCR_PHY_CTL	= 0x40,
+	PCR_PHY_CTL2	= 0x90,
+	PCR_DEV_CTRL	= 0xE8,
 };
 
 enum pci_cfg_register_bits {
-	PCTL_PWR_ON		= (0xFU << 24),
-	PCTL_OFF		= (0xFU << 12),
+	PCTL_PWR_ON	= (0xFU << 24),
+	PCTL_OFF	= (0xFU << 12),
+	PRD_REQ_SIZE	= (0x4000),
+	PRD_REQ_MASK	= (0x00007000),
 };
 
 enum nvram_layout_offsets {
-	NVR_SIG			= 0x00,		/* 0xAA, 0x55 */
-	NVR_SAS_ADDR		= 0x02,		/* 8-byte SAS address */
+	NVR_SIG		= 0x00,		/* 0xAA, 0x55 */
+	NVR_SAS_ADDR	= 0x02,		/* 8-byte SAS address */
 };
 
 enum chip_flavors {
@@ -364,10 +482,41 @@ enum chip_flavors {
 	chip_6480,
 };
 
+enum port_type {
+	PORT_TYPE_SAS	=  (1L << 1),
+	PORT_TYPE_SATA	=  (1L << 0),
+};
+
+/* Command Table Format */
+enum ct_format {
+	/* SSP */
+	SSP_F_H		=  0x00,
+	SSP_F_IU	=  0x18,
+	SSP_F_MAX	=  0x4D,
+	/* STP */
+	STP_CMD_FIS	=  0x00,
+	STP_ATAPI_CMD	=  0x40,
+	STP_F_MAX	=  0x10,
+	/* SMP */
+	SMP_F_T		=  0x00,
+	SMP_F_DEP	=  0x01,
+	SMP_F_MAX	=  0x101,
+};
+
+enum status_buffer {
+	SB_EIR_OFF	=  0x00,	/* Error Information Record */
+	SB_RFB_OFF	=  0x08,	/* Response Frame Buffer */
+	SB_RFB_MAX	=  0x400,	/* RFB size*/
+};
+
+enum error_info_rec {
+	CMD_ISS_STPD	=  (1U << 31),	/* Cmd Issue Stopped */
+};
+
 struct mvs_chip_info {
-	unsigned int		n_phy;
-	unsigned int		srs_sz;
-	unsigned int		slot_width;
+	u32		n_phy;
+	u32		srs_sz;
+	u32		slot_width;
 };
 
 struct mvs_err_info {
@@ -395,26 +544,43 @@ struct mvs_cmd_hdr {
 
 struct mvs_slot_info {
 	struct sas_task		*task;
-	unsigned int		n_elem;
+	u32			n_elem;
+	u32			tx;
 
 	/* DMA buffer for storing cmd tbl, open addr frame, status buffer,
 	 * and PRD table
 	 */
 	void			*buf;
 	dma_addr_t		buf_dma;
+#if _MV_DUMP
+	u32			cmd_size;
+#endif
 
 	void			*response;
 };
 
 struct mvs_port {
 	struct asd_sas_port	sas_port;
+	u8			port_attached;
+	u8			taskfileset;
+	u8			wide_port_phymap;
 };
 
 struct mvs_phy {
 	struct mvs_port		*port;
 	struct asd_sas_phy	sas_phy;
-
-	u8			frame_rcvd[24 + 1024];
+	struct sas_identify	identify;
+	struct scsi_device	*sdev;
+	u64		dev_sas_addr;
+	u64		att_dev_sas_addr;
+	u32		att_dev_info;
+	u32		dev_info;
+	u32		phy_type;
+	u32		phy_status;
+	u32		irq_status;
+	u32		frame_rcvd_size;
+	u8		frame_rcvd[32];
+	u8		phy_attached;
 };
 
 struct mvs_info {
@@ -440,24 +606,62 @@ struct mvs_info {
 	__le32			*rx_fis;	/* RX'd FIS area */
 	dma_addr_t		rx_fis_dma;
 
-	struct mvs_cmd_hdr	*slot;		/* DMA command header slots */
+	struct mvs_cmd_hdr	*slot;	/* DMA command header slots */
 	dma_addr_t		slot_dma;
 
 	const struct mvs_chip_info *chip;
 
-					/* further per-slot information */
+	unsigned long		tags[MVS_SLOTS];
 	struct mvs_slot_info	slot_info[MVS_SLOTS];
-	unsigned long		tags[(MVS_SLOTS / sizeof(unsigned long)) + 1];
-
+				/* further per-slot information */
 	struct mvs_phy		phy[MVS_MAX_PHYS];
 	struct mvs_port		port[MVS_MAX_PHYS];
+
+	u32			can_queue;	/* per adapter */
+	u32			tag_out;	/*Get*/
+	u32			tag_in;		/*Give*/
 };
 
+struct mvs_queue_task {
+	struct list_head list;
+
+	void   *uldd_task;
+};
+
+static int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
+			   void *funcdata);
+static u32 mvs_read_phy_ctl(struct mvs_info *mvi, u32 port);
+static void mvs_write_phy_ctl(struct mvs_info *mvi, u32 port, u32 val);
+static u32 mvs_read_port(struct mvs_info *mvi, u32 off, u32 off2, u32 port);
+static void mvs_write_port(struct mvs_info *mvi, u32 off, u32 off2,
+				u32 port, u32 val);
+static u32 mvs_read_port_cfg_data(struct mvs_info *mvi, u32 port);
+static void mvs_write_port_cfg_data(struct mvs_info *mvi, u32 port, u32 val);
+static void mvs_write_port_cfg_addr(struct mvs_info *mvi, u32 port, u32 addr);
+static u32 mvs_read_port_vsr_data(struct mvs_info *mvi, u32 port);
+static void mvs_write_port_vsr_data(struct mvs_info *mvi, u32 port, u32 val);
+static void mvs_write_port_vsr_addr(struct mvs_info *mvi, u32 port, u32 addr);
+static u32 mvs_read_port_irq_stat(struct mvs_info *mvi, u32 port);
+static void mvs_write_port_irq_stat(struct mvs_info *mvi, u32 port, u32 val);
+static void mvs_write_port_irq_mask(struct mvs_info *mvi, u32 port, u32 val);
+static u32 mvs_read_port_irq_mask(struct mvs_info *mvi, u32 port);
+
+static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i);
+static void mvs_detect_porttype(struct mvs_info *mvi, int i);
+static void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st);
+static void mvs_free_reg_set(struct mvs_info *mvi, struct mvs_port *port);
+static u8 mvs_assign_reg_set(struct mvs_info *mvi, struct mvs_port *port);
+static u32 mvs_is_sig_fis_received(u32 irq_status);
+
+static int mvs_scan_finished(struct Scsi_Host *, unsigned long);
+static void mvs_scan_start(struct Scsi_Host *);
+static int mvs_sas_slave_alloc(struct scsi_device *scsi_dev);
+
 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_6320] =		{ 2, 16, 9  },
+	[chip_6440] =		{ 4, 16, 9  },
 	[chip_6480] =		{ 8, 32, 10 },
 };
 
@@ -468,6 +672,8 @@ static struct scsi_host_template mvs_sht = {
 	.target_alloc		= sas_target_alloc,
 	.slave_configure	= sas_slave_configure,
 	.slave_destroy		= sas_slave_destroy,
+	.scan_finished		= mvs_scan_finished,
+	.scan_start		= mvs_scan_start,
 	.change_queue_depth	= sas_change_queue_depth,
 	.change_queue_type	= sas_change_queue_type,
 	.bios_param		= sas_bios_param,
@@ -477,14 +683,154 @@ static struct scsi_host_template mvs_sht = {
 	.sg_tablesize		= SG_ALL,
 	.max_sectors		= SCSI_DEFAULT_MAX_SECTORS,
 	.use_clustering		= ENABLE_CLUSTERING,
-	.eh_device_reset_handler= sas_eh_device_reset_handler,
+	.eh_device_reset_handler	= sas_eh_device_reset_handler,
 	.eh_bus_reset_handler	= sas_eh_bus_reset_handler,
-	.slave_alloc		= sas_slave_alloc,
+	.slave_alloc		= mvs_sas_slave_alloc,
 	.target_destroy		= sas_target_destroy,
 	.ioctl			= sas_ioctl,
 };
 
-static void mvs_int_rx(struct mvs_info *mvi, bool self_clear);
+static void mvs_hexdump(u32 size, u8 *data, u32 baseaddr)
+{
+	u32 i;
+	u32 run;
+	u32 offset;
+
+	offset = 0;
+	while (size) {
+		printk("%08X : ", baseaddr + offset);
+		if (size >= 16)
+			run = 16;
+		else
+			run = size;
+		size -= run;
+		for (i = 0; i < 16; i++) {
+			if (i < run)
+				printk("%02X ", (u32)data[i]);
+			else
+				printk("   ");
+		}
+		printk(": ");
+		for (i = 0; i < run; i++)
+			printk("%c", isalnum(data[i]) ? data[i] : '.');
+		printk("\n");
+		data = &data[16];
+		offset += run;
+	}
+	printk("\n");
+}
+
+static void mvs_hba_sb_dump(struct mvs_info *mvi, u32 tag,
+				   enum sas_protocol proto)
+{
+#if _MV_DUMP
+	u32 offset;
+	struct pci_dev *pdev = mvi->pdev;
+	struct mvs_slot_info *slot = &mvi->slot_info[tag];
+
+	offset = slot->cmd_size + MVS_OAF_SZ +
+	    sizeof(struct mvs_prd) * slot->n_elem;
+	dev_printk(KERN_DEBUG, &pdev->dev, "+---->Status buffer[%d] :\n",
+			tag);
+	mvs_hexdump(32, (u8 *) slot->response,
+		    (u32) slot->buf_dma + offset);
+#endif
+}
+
+static void mvs_hba_memory_dump(struct mvs_info *mvi, u32 tag,
+				enum sas_protocol proto)
+{
+#if _MV_DUMP
+	u32 sz, w_ptr, r_ptr;
+	u64 addr;
+	void __iomem *regs = mvi->regs;
+	struct pci_dev *pdev = mvi->pdev;
+	struct mvs_slot_info *slot = &mvi->slot_info[tag];
+
+	/*Delivery Queue */
+	sz = mr32(TX_CFG) & TX_RING_SZ_MASK;
+	w_ptr = mr32(TX_PROD_IDX) & TX_RING_SZ_MASK;
+	r_ptr = mr32(TX_CONS_IDX) & TX_RING_SZ_MASK;
+	addr = mr32(TX_HI) << 16 << 16 | mr32(TX_LO);
+	dev_printk(KERN_DEBUG, &pdev->dev,
+		"Delivery Queue Size=%04d , WRT_PTR=%04X , RD_PTR=%04X\n",
+		sz, w_ptr, r_ptr);
+	dev_printk(KERN_DEBUG, &pdev->dev,
+		"Delivery Queue Base Address=0x%llX (PA)"
+		"(tx_dma=0x%llX), Entry=%04d\n",
+		addr, mvi->tx_dma, w_ptr);
+	mvs_hexdump(sizeof(u32), (u8 *)(&mvi->tx[mvi->tx_prod]),
+			(u32) mvi->tx_dma + sizeof(u32) * w_ptr);
+	/*Command List */
+	addr = mr32(CMD_LIST_HI) << 16 << 16 | mr32(CMD_LIST_LO);
+	dev_printk(KERN_DEBUG, &pdev->dev,
+		"Command List Base Address=0x%llX (PA)"
+		"(slot_dma=0x%llX), Header=%03d\n",
+		addr, mvi->slot_dma, tag);
+	dev_printk(KERN_DEBUG, &pdev->dev, "Command Header[%03d]:\n", tag);
+	/*mvs_cmd_hdr */
+	mvs_hexdump(sizeof(struct mvs_cmd_hdr), (u8 *)(&mvi->slot[tag]),
+		(u32) mvi->slot_dma + tag * sizeof(struct mvs_cmd_hdr));
+	/*1.command table area */
+	dev_printk(KERN_DEBUG, &pdev->dev, "+---->Command Table :\n");
+	mvs_hexdump(slot->cmd_size, (u8 *) slot->buf, (u32) slot->buf_dma);
+	/*2.open address frame area */
+	dev_printk(KERN_DEBUG, &pdev->dev, "+---->Open Address Frame :\n");
+	mvs_hexdump(MVS_OAF_SZ, (u8 *) slot->buf + slot->cmd_size,
+				(u32) slot->buf_dma + slot->cmd_size);
+	/*3.status buffer */
+	mvs_hba_sb_dump(mvi, tag, proto);
+	/*4.PRD table */
+	dev_printk(KERN_DEBUG, &pdev->dev, "+---->PRD table :\n");
+	mvs_hexdump(sizeof(struct mvs_prd) * slot->n_elem,
+		(u8 *) slot->buf + slot->cmd_size + MVS_OAF_SZ,
+		(u32) slot->buf_dma + slot->cmd_size + MVS_OAF_SZ);
+#endif
+}
+
+static void mvs_hba_cq_dump(struct mvs_info *mvi)
+{
+#if _MV_DUMP
+	u64 addr;
+	void __iomem *regs = mvi->regs;
+	struct pci_dev *pdev = mvi->pdev;
+	u32 entry = mvi->rx_cons + 1;
+	u32 rx_desc = le32_to_cpu(mvi->rx[entry]);
+
+	/*Completion Queue */
+	addr = mr32(RX_HI) << 16 << 16 | mr32(RX_LO);
+	dev_printk(KERN_DEBUG, &pdev->dev, "Completion Task = 0x%08X\n",
+		   (u32) mvi->slot_info[rx_desc & RXQ_SLOT_MASK].task);
+	dev_printk(KERN_DEBUG, &pdev->dev,
+		"Completion List Base Address=0x%llX (PA), "
+		"CQ_Entry=%04d, CQ_WP=0x%08X\n",
+		addr, entry - 1, mvi->rx[0]);
+	mvs_hexdump(sizeof(u32), (u8 *)(&rx_desc),
+		    mvi->rx_dma + sizeof(u32) * entry);
+#endif
+}
+
+static void mvs_hba_interrupt_enable(struct mvs_info *mvi)
+{
+	void __iomem *regs = mvi->regs;
+	u32 tmp;
+
+	tmp = mr32(GBL_CTL);
+
+	mw32(GBL_CTL, tmp | INT_EN);
+}
+
+static void mvs_hba_interrupt_disable(struct mvs_info *mvi)
+{
+	void __iomem *regs = mvi->regs;
+	u32 tmp;
+
+	tmp = mr32(GBL_CTL);
+
+	mw32(GBL_CTL, tmp & ~INT_EN);
+}
+
+static int 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)
@@ -519,39 +865,38 @@ static int pci_go_64(struct pci_dev *pdev)
 	return rc;
 }
 
-static void mvs_tag_clear(struct mvs_info *mvi, unsigned int tag)
+static void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
 {
-	mvi->tags[tag / sizeof(unsigned long)] &=
-		~(1UL << (tag % sizeof(unsigned long)));
+	mvi->tag_in = (mvi->tag_in + 1) & (MVS_SLOTS - 1);
+	mvi->tags[mvi->tag_in] = tag;
 }
 
-static void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
+static void mvs_tag_free(struct mvs_info *mvi, u32 tag)
 {
-	mvi->tags[tag / sizeof(unsigned long)] |=
-		(1UL << (tag % sizeof(unsigned long)));
+	mvi->tag_out = (mvi->tag_out - 1) & (MVS_SLOTS - 1);
 }
 
-static bool mvs_tag_test(struct mvs_info *mvi, unsigned int tag)
+static int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
 {
-	return mvi->tags[tag / sizeof(unsigned long)] &
-		(1UL << (tag % sizeof(unsigned long)));
+	if (mvi->tag_out != mvi->tag_in) {
+		*tag_out = mvi->tags[mvi->tag_out];
+		mvi->tag_out = (mvi->tag_out + 1) & (MVS_SLOTS - 1);
+		return 0;
+	}
+	return -EBUSY;
 }
 
-static int mvs_tag_alloc(struct mvs_info *mvi, unsigned int *tag_out)
+static void mvs_tag_init(struct mvs_info *mvi)
 {
-	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;
+	int i;
+	for (i = 0; i < MVS_SLOTS; ++i)
+		mvi->tags[i] = i;
+	mvi->tag_out = 0;
+	mvi->tag_in = MVS_SLOTS - 1;
 }
 
-static int mvs_eep_read(void __iomem *regs, unsigned int addr, u32 *data)
+#ifndef MVS_DISABLE_NVRAM
+static int mvs_eep_read(void __iomem *regs, u32 addr, u32 *data)
 {
 	int timeout = 1000;
 
@@ -573,10 +918,10 @@ static int mvs_eep_read(void __iomem *regs, unsigned int addr, u32 *data)
 	return -EBUSY;
 }
 
-static int mvs_eep_read_buf(void __iomem *regs, unsigned int addr,
-			    void *buf, unsigned int buflen)
+static int mvs_eep_read_buf(void __iomem *regs, u32 addr,
+			    void *buf, u32 buflen)
 {
-	unsigned int addr_end, tmp_addr, i, j;
+	u32 addr_end, tmp_addr, i, j;
 	u32 tmp = 0;
 	int rc;
 	u8 *tmp8, *buf8 = buf;
@@ -592,7 +937,7 @@ static int mvs_eep_read_buf(void __iomem *regs, unsigned int addr,
 		if (rc)
 			return rc;
 
-		tmp8 = (u8 *) &tmp;
+		tmp8 = (u8 *)&tmp;
 		for (i = j; i < 4; i++)
 			*buf8++ = tmp8[i];
 
@@ -613,7 +958,7 @@ static int mvs_eep_read_buf(void __iomem *regs, unsigned int addr,
 		if (rc)
 			return rc;
 
-		tmp8 = (u8 *) &tmp;
+		tmp8 = (u8 *)&tmp;
 		j = addr_end - tmp_addr;
 		for (i = 0; i < j; i++)
 			*buf8++ = tmp8[i];
@@ -623,13 +968,15 @@ static int mvs_eep_read_buf(void __iomem *regs, unsigned int addr,
 
 	return 0;
 }
+#endif
 
-static int mvs_nvram_read(struct mvs_info *mvi, unsigned int addr,
-			  void *buf, unsigned int buflen)
+static int mvs_nvram_read(struct mvs_info *mvi, u32 addr,
+			  void *buf, u32 buflen)
 {
+#ifndef MVS_DISABLE_NVRAM
 	void __iomem *regs = mvi->regs;
 	int rc, i;
-	unsigned int sum;
+	u32 sum;
 	u8 hdr[2], *tmp;
 	const char *msg;
 
@@ -644,16 +991,17 @@ static int mvs_nvram_read(struct mvs_info *mvi, unsigned int addr,
 		goto err_out;
 	}
 
-	if (hdr[0] != 0x5A) {		/* entry id */
+	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]);
+	sum = ((u32)hdr[0]) + ((u32)hdr[1]);
 	for (i = 0; i < buflen; i++)
-		sum += ((unsigned int)tmp[i]);
+		sum += ((u32)tmp[i]);
 
 	if (sum) {
 		msg = "nvram checksum failure";
@@ -666,11 +1014,122 @@ static int mvs_nvram_read(struct mvs_info *mvi, unsigned int addr,
 err_out:
 	dev_printk(KERN_ERR, &mvi->pdev->dev, "%s", msg);
 	return rc;
+#else
+	/* FIXME , For SAS target mode */
+	memcpy(buf, "\x00\x00\xab\x11\x30\x04\x05\x50", 8);
+	return 0;
+#endif
+}
+
+static void mvs_bytes_dmaed(struct mvs_info *mvi, int i)
+{
+	struct mvs_phy *phy = &mvi->phy[i];
+
+	if (!phy->phy_attached)
+		return;
+
+	if (phy->phy_type & PORT_TYPE_SAS) {
+		struct sas_identify_frame *id;
+
+		id = (struct sas_identify_frame *)phy->frame_rcvd;
+		id->dev_type = phy->identify.device_type;
+		id->initiator_bits = SAS_PROTOCOL_ALL;
+		id->target_bits = phy->identify.target_port_protocols;
+	} else if (phy->phy_type & PORT_TYPE_SATA) {
+		/* TODO */
+	}
+	mvi->sas.sas_phy[i]->frame_rcvd_size = phy->frame_rcvd_size;
+	mvi->sas.notify_port_event(mvi->sas.sas_phy[i],
+				   PORTE_BYTES_DMAED);
+}
+
+static int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
+{
+	/* give the phy enabling interrupt event time to come in (1s
+	 * is empirically about all it takes) */
+	if (time < HZ)
+		return 0;
+	/* Wait for discovery to finish */
+	scsi_flush_work(shost);
+	return 1;
+}
+
+static void mvs_scan_start(struct Scsi_Host *shost)
+{
+	int i;
+	struct mvs_info *mvi = SHOST_TO_SAS_HA(shost)->lldd_ha;
+
+	for (i = 0; i < mvi->chip->n_phy; ++i) {
+		mvs_bytes_dmaed(mvi, i);
+	}
+}
+
+static int mvs_sas_slave_alloc(struct scsi_device *scsi_dev)
+{
+	int rc;
+
+	rc = sas_slave_alloc(scsi_dev);
+
+	return rc;
 }
 
 static void mvs_int_port(struct mvs_info *mvi, int port_no, u32 events)
 {
-	/* FIXME */
+	struct pci_dev *pdev = mvi->pdev;
+	struct sas_ha_struct *sas_ha = &mvi->sas;
+	struct mvs_phy *phy = &mvi->phy[port_no];
+	struct asd_sas_phy *sas_phy = &phy->sas_phy;
+
+	phy->irq_status = mvs_read_port_irq_stat(mvi, port_no);
+	/*
+	* events is port event now ,
+	* we need check the interrupt status which belongs to per port.
+	*/
+	dev_printk(KERN_DEBUG, &pdev->dev,
+		"Port %d Event = %X\n",
+		port_no, phy->irq_status);
+
+	if (phy->irq_status & (PHYEV_POOF | PHYEV_DEC_ERR)) {
+		if (!mvs_is_phy_ready(mvi, port_no)) {
+			sas_phy_disconnected(sas_phy);
+			sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
+		} else
+			mvs_phy_control(sas_phy, PHY_FUNC_LINK_RESET, NULL);
+	}
+	if (!(phy->irq_status & PHYEV_DEC_ERR)) {
+		if (phy->irq_status & PHYEV_COMWAKE) {
+			u32 tmp = mvs_read_port_irq_mask(mvi, port_no);
+			mvs_write_port_irq_mask(mvi, port_no,
+						tmp | PHYEV_SIG_FIS);
+		}
+		if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
+			phy->phy_status = mvs_is_phy_ready(mvi, port_no);
+			if (phy->phy_status) {
+				mvs_detect_porttype(mvi, port_no);
+
+				if (phy->phy_type & PORT_TYPE_SATA) {
+					u32 tmp = mvs_read_port_irq_mask(mvi,
+								port_no);
+					tmp &= ~PHYEV_SIG_FIS;
+					mvs_write_port_irq_mask(mvi,
+								port_no, tmp);
+				}
+
+				mvs_update_phyinfo(mvi, port_no, 0);
+				sas_ha->notify_phy_event(sas_phy,
+							PHYE_OOB_DONE);
+				mvs_bytes_dmaed(mvi, port_no);
+			} else {
+				dev_printk(KERN_DEBUG, &pdev->dev,
+					"plugin interrupt but phy is gone\n");
+				mvs_phy_control(sas_phy, PHY_FUNC_LINK_RESET,
+							NULL);
+			}
+		} else if (phy->irq_status & PHYEV_BROAD_CH)
+			sas_ha->notify_port_event(sas_phy,
+						PORTE_BROADCAST_RCVD);
+	}
+	mvs_write_port_irq_stat(mvi, port_no, phy->irq_status);
 }
 
 static void mvs_int_sata(struct mvs_info *mvi)
@@ -679,11 +1138,12 @@ static void mvs_int_sata(struct mvs_info *mvi)
 }
 
 static void mvs_slot_free(struct mvs_info *mvi, struct sas_task *task,
-			  struct mvs_slot_info *slot, unsigned int slot_idx)
+			  struct mvs_slot_info *slot, u32 slot_idx)
 {
-	if (slot->n_elem)
-		pci_unmap_sg(mvi->pdev, task->scatter,
-			     slot->n_elem, task->data_dir);
+	if (!sas_protocol_ata(task->task_proto))
+		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:
@@ -701,40 +1161,60 @@ static void mvs_slot_free(struct mvs_info *mvi, struct sas_task *task,
 		break;
 	}
 
+	slot->task = NULL;
 	mvs_tag_clear(mvi, slot_idx);
 }
 
 static void mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
-			 unsigned int slot_idx)
+			 u32 slot_idx)
 {
-	/* FIXME */
+	struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
+	u64 err_dw0 = *(u32 *) slot->response;
+	void __iomem *regs = mvi->regs;
+	u32 tmp;
+
+	if (err_dw0 & CMD_ISS_STPD)
+		if (sas_protocol_ata(task->task_proto)) {
+			tmp = mr32(INT_STAT_SRS);
+			mw32(INT_STAT_SRS, tmp & 0xFFFF);
+		}
+
+	mvs_hba_sb_dump(mvi, slot_idx, task->task_proto);
 }
 
-static void mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc)
+static int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc)
 {
-	unsigned int slot_idx = rx_desc & RXQ_SLOT_MASK;
+	u32 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;
+	struct mvs_port *port = &mvi->port[task->dev->port->id];
 	bool aborted;
+	void *to;
 
 	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);
+		    ~(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;
+		return -1;
 
 	memset(tstat, 0, sizeof(*tstat));
 	tstat->resp = SAS_TASK_COMPLETE;
 
+
+	if (unlikely(!port->port_attached)) {
+		tstat->stat = SAS_PHY_DOWN;
+		goto out;
+	}
+
 	/* error info record present */
-	if (rx_desc & RXQ_ERR) {
+	if ((rx_desc & RXQ_ERR) && (*(u64 *) slot->response)) {
 		tstat->stat = SAM_CHECK_COND;
 		mvs_slot_err(mvi, task, slot_idx);
 		goto out;
@@ -743,13 +1223,14 @@ static void mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc)
 	switch (task->task_proto) {
 	case SAS_PROTOCOL_SSP:
 		/* hw says status == 0, datapres == 0 */
-		if (rx_desc & RXQ_GOOD)
+		if (rx_desc & RXQ_GOOD) {
 			tstat->stat = SAM_GOOD;
-
+			tstat->resp = SAS_TASK_COMPLETE;
+		}
 		/* response frame present */
 		else if (rx_desc & RXQ_RSP) {
 			struct ssp_response_iu *iu =
-				slot->response + sizeof(struct mvs_err_info);
+			    slot->response + sizeof(struct mvs_err_info);
 			sas_ssp_task_response(&mvi->pdev->dev, task, iu);
 		}
 
@@ -758,20 +1239,37 @@ static void mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc)
 			tstat->stat = SAM_CHECK_COND;
 		break;
 
-	case SAS_PROTOCOL_SMP:
-		tstat->stat = SAM_GOOD;
-		break;
+	case SAS_PROTOCOL_SMP: {
+			struct scatterlist *sg_resp = &task->smp_task.smp_resp;
+			tstat->stat = SAM_GOOD;
+			to = kmap_atomic(sg_page(sg_resp), KM_IRQ0);
+			memcpy(to + sg_resp->offset,
+				slot->response + sizeof(struct mvs_err_info),
+				sg_dma_len(sg_resp));
+			kunmap_atomic(to, KM_IRQ0);
+			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;
+	case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
+			struct ata_task_resp *resp =
+			    (struct ata_task_resp *)tstat->buf;
+
+			if ((rx_desc & (RXQ_DONE | RXQ_ERR | RXQ_ATTN)) ==
+			    RXQ_DONE)
+				tstat->stat = SAM_GOOD;
+			else
+				tstat->stat = SAM_CHECK_COND;
+
+			resp->frame_len = sizeof(struct dev_to_host_fis);
+			memcpy(&resp->ending_fis[0],
+			       SATA_RECEIVED_D2H_FIS(port->taskfileset),
+			       sizeof(struct dev_to_host_fis));
+			if (resp->ending_fis[2] & ATA_ERR)
+				mvs_hexdump(16, resp->ending_fis, 0);
+			break;
+		}
 
 	default:
 		tstat->stat = SAM_CHECK_COND;
@@ -781,6 +1279,7 @@ static void mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc)
 out:
 	mvs_slot_free(mvi, task, slot, slot_idx);
 	task->task_done(task);
+	return tstat->stat;
 }
 
 static void mvs_int_full(struct mvs_info *mvi)
@@ -791,6 +1290,8 @@ static void mvs_int_full(struct mvs_info *mvi)
 
 	stat = mr32(INT_STAT);
 
+	mvs_int_rx(mvi, false);
+
 	for (i = 0; i < MVS_MAX_PORTS; i++) {
 		tmp = (stat >> i) & (CINT_PORT | CINT_PORT_STOPPED);
 		if (tmp)
@@ -800,48 +1301,62 @@ static void mvs_int_full(struct mvs_info *mvi)
 	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)
+static int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
 {
+	void __iomem *regs = mvi->regs;
 	u32 rx_prod_idx, rx_desc;
 	bool attn = false;
+	struct pci_dev *pdev = mvi->pdev;
 
 	/* 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;
+	rx_prod_idx = mr32(RX_CONS_IDX) & RX_RING_SZ_MASK;
 	if (rx_prod_idx == 0xfff) {	/* h/w hasn't touched RX ring yet */
 		mvi->rx_cons = 0xfff;
-		return;
+		return 0;
 	}
+
+	/* The CMPL_Q may come late, read from register and try again
+	* note: if coalescing is enabled,
+	* it will need to read from register every time for sure
+	*/
+	if (mvi->rx_cons == rx_prod_idx)
+		return 0;
+
 	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);
+		mvs_hba_cq_dump(mvi);
 
-		if (rx_desc & RXQ_ATTN)
+		if (unlikely(rx_desc & RXQ_DONE))
+			mvs_slot_complete(mvi, rx_desc);
+		if (rx_desc & RXQ_ATTN) {
 			attn = true;
+			dev_printk(KERN_DEBUG, &pdev->dev, "ATTN %X\n",
+				rx_desc);
+		} else if (rx_desc & RXQ_ERR) {
+			dev_printk(KERN_DEBUG, &pdev->dev, "RXQ_ERR %X\n",
+				rx_desc);
+		}
 	}
 
 	if (attn && self_clear)
 		mvs_int_full(mvi);
 
+	return 0;
 }
 
 static irqreturn_t mvs_interrupt(int irq, void *opaque)
@@ -851,6 +1366,10 @@ static irqreturn_t mvs_interrupt(int irq, void *opaque)
 	u32 stat;
 
 	stat = mr32(GBL_INT_STAT);
+
+	/* clear CMD_CMPLT ASAP */
+	mw32_f(INT_STAT, CINT_DONE);
+
 	if (stat == 0 || stat == 0xffffffff)
 		return IRQ_NONE;
 
@@ -863,6 +1382,7 @@ static irqreturn_t mvs_interrupt(int irq, void *opaque)
 	return IRQ_HANDLED;
 }
 
+#ifndef MVS_DISABLE_MSI
 static irqreturn_t mvs_msi_interrupt(int irq, void *opaque)
 {
 	struct mvs_info *mvi = opaque;
@@ -875,32 +1395,46 @@ static irqreturn_t mvs_msi_interrupt(int irq, void *opaque)
 
 	return IRQ_HANDLED;
 }
+#endif
 
 struct mvs_task_exec_info {
-	struct sas_task		*task;
-	struct mvs_cmd_hdr	*hdr;
-	unsigned int		tag;
-	int			n_elem;
+	struct sas_task *task;
+	struct mvs_cmd_hdr *hdr;
+	struct mvs_port *port;
+	u32 tag;
+	int n_elem;
 };
 
-static int mvs_task_prep_smp(struct mvs_info *mvi, struct mvs_task_exec_info *tei)
+static int mvs_task_prep_smp(struct mvs_info *mvi,
+			     struct mvs_task_exec_info *tei)
 {
-	int elem, rc;
+	int elem, rc, i;
+	struct sas_task *task = tei->task;
 	struct mvs_cmd_hdr *hdr = tei->hdr;
 	struct scatterlist *sg_req, *sg_resp;
-	unsigned int req_len, resp_len, tag = tei->tag;
-
+	u32 req_len, resp_len, tag = tei->tag;
+	void *buf_tmp;
+	u8 *buf_oaf;
+	dma_addr_t buf_tmp_dma;
+	struct mvs_prd *buf_prd;
+	struct scatterlist *sg;
+	struct mvs_slot_info *slot = &mvi->slot_info[tag];
+	struct asd_sas_port *sas_port = task->dev->port;
+	u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
+#if _MV_DUMP
+	u8 *buf_cmd;
+	void *from;
+#endif
 	/*
 	 * DMA-map SMP request, response buffers
 	 */
-
-	sg_req = &tei->task->smp_task.smp_req;
+	sg_req = &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;
+	sg_resp = &task->smp_task.smp_resp;
 	elem = pci_map_sg(mvi->pdev, sg_resp, 1, PCI_DMA_FROMDEVICE);
 	if (!elem) {
 		rc = -ENOMEM;
@@ -915,21 +1449,77 @@ static int mvs_task_prep_smp(struct mvs_info *mvi, struct mvs_task_exec_info *te
 	}
 
 	/*
-	 * Fill in TX ring and command slot header
+	 * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 	 */
 
-	mvi->tx[tag] = cpu_to_le32(
-		(TXQ_CMD_SMP << TXQ_CMD_SHIFT) | TXQ_MODE_I | tag);
+	/* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
+	buf_tmp = slot->buf;
+	buf_tmp_dma = slot->buf_dma;
 
-	hdr->flags = 0;
-	hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
+#if _MV_DUMP
+	buf_cmd = buf_tmp;
+	hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
+	buf_tmp += req_len;
+	buf_tmp_dma += req_len;
+	slot->cmd_size = req_len;
+#else
+	hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
+#endif
+
+	/* 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;
+	if (tei->n_elem)
+		hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
+	else
+		hdr->prd_tbl = 0;
+
+	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);
+
+	/*
+	 * Fill in TX ring and command slot header
+	 */
+	slot->tx = mvi->tx_prod;
+	mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
+					TXQ_MODE_I | tag |
+					(sas_port->phy_mask << TXQ_PHY_SHIFT));
+
+	hdr->flags |= flags;
+	hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 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;
 
+	/* generate open address frame hdr (first 12 bytes) */
+	buf_oaf[0] = (1 << 7) | (0 << 4) | 0x01; /* initiator, SMP, ftype 1h */
+	buf_oaf[1] = task->dev->linkrate & 0xf;
+	*(u16 *)(buf_oaf + 2) = 0xFFFF;		/* SAS SPEC */
+	memcpy(buf_oaf + 4, task->dev->sas_addr, SAS_ADDR_SIZE);
+
+	/* fill in PRD (scatter/gather) table, if any */
+	for_each_sg(task->scatter, sg, tei->n_elem, i) {
+		buf_prd->addr = cpu_to_le64(sg_dma_address(sg));
+		buf_prd->len = cpu_to_le32(sg_dma_len(sg));
+		buf_prd++;
+	}
+
+#if _MV_DUMP
+	/* copy cmd table */
+	from = kmap_atomic(sg_page(sg_req), KM_IRQ0);
+	memcpy(buf_cmd, from + sg_req->offset, req_len);
+	kunmap_atomic(from, KM_IRQ0);
+#endif
 	return 0;
 
 err_out_2:
@@ -941,6 +1531,73 @@ err_out:
 	return rc;
 }
 
+static void mvs_free_reg_set(struct mvs_info *mvi, struct mvs_port *port)
+{
+	void __iomem *regs = mvi->regs;
+	u32 tmp, offs;
+	u8 *tfs = &port->taskfileset;
+
+	if (*tfs == MVS_ID_NOT_MAPPED)
+		return;
+
+	offs = 1U << ((*tfs & 0x0f) + PCS_EN_SATA_REG_SHIFT);
+	if (*tfs < 16) {
+		tmp = mr32(PCS);
+		mw32(PCS, tmp & ~offs);
+	} else {
+		tmp = mr32(CTL);
+		mw32(CTL, tmp & ~offs);
+	}
+
+	tmp = mr32(INT_STAT_SRS) & (1U << *tfs);
+	if (tmp)
+		mw32(INT_STAT_SRS, tmp);
+
+	*tfs = MVS_ID_NOT_MAPPED;
+}
+
+static u8 mvs_assign_reg_set(struct mvs_info *mvi, struct mvs_port *port)
+{
+	int i;
+	u32 tmp, offs;
+	void __iomem *regs = mvi->regs;
+
+	if (port->taskfileset != MVS_ID_NOT_MAPPED)
+		return 0;
+
+	tmp = mr32(PCS);
+
+	for (i = 0; i < mvi->chip->srs_sz; i++) {
+		if (i == 16)
+			tmp = mr32(CTL);
+		offs = 1U << ((i & 0x0f) + PCS_EN_SATA_REG_SHIFT);
+		if (!(tmp & offs)) {
+			port->taskfileset = i;
+
+			if (i < 16)
+				mw32(PCS, tmp | offs);
+			else
+				mw32(CTL, tmp | offs);
+			tmp = mr32(INT_STAT_SRS) & (1U << i);
+			if (tmp)
+				mw32(INT_STAT_SRS, tmp);
+			return 0;
+		}
+	}
+	return MVS_ID_NOT_MAPPED;
+}
+
+static u32 mvs_get_ncq_tag(struct sas_task *task)
+{
+	u32 tag = 0;
+	struct ata_queued_cmd *qc = task->uldd_task;
+
+	if (qc)
+		tag = qc->tag;
+
+	return tag;
+}
+
 static int mvs_task_prep_ata(struct mvs_info *mvi,
 			     struct mvs_task_exec_info *tei)
 {
@@ -948,47 +1605,65 @@ static int mvs_task_prep_ata(struct mvs_info *mvi,
 	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 mvs_slot_info *slot;
 	struct scatterlist *sg;
 	struct mvs_prd *buf_prd;
+	struct mvs_port *port = tei->port;
+	u32 tag = tei->tag;
+	u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
 	void *buf_tmp;
 	u8 *buf_cmd, *buf_oaf;
 	dma_addr_t buf_tmp_dma;
-	unsigned int i, req_len, resp_len;
+	u32 i, req_len, resp_len;
+	const u32 max_resp_len = SB_RFB_MAX;
+
+	if (mvs_assign_reg_set(mvi, port) == MVS_ID_NOT_MAPPED)
+		return -EBUSY;
 
-	/* 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));
+	slot = &mvi->slot_info[tag];
+	slot->tx = mvi->tx_prod;
+	mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
+					(TXQ_CMD_STP << TXQ_CMD_SHIFT) |
+					(sas_port->phy_mask << TXQ_PHY_SHIFT) |
+					(port->taskfileset << TXQ_SRS_SHIFT));
 
 	if (task->ata_task.use_ncq)
 		flags |= MCH_FPDMA;
-	if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
-		flags |= MCH_ATAPI;
+	if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) {
+		if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
+			flags |= MCH_ATAPI;
+	}
+
 	/* FIXME: fill in port multiplier number */
 
 	hdr->flags = cpu_to_le32(flags);
-	hdr->tags = cpu_to_le32(tag);
+
+	/* FIXME: the low order order 5 bits for the TAG if enable NCQ */
+	if (task->ata_task.use_ncq) {
+		hdr->tags = cpu_to_le32(mvs_get_ncq_tag(task));
+		/*Fill in task file */
+		task->ata_task.fis.sector_count = hdr->tags << 3;
+	} else
+		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;
+	/* 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;
+#if _MV_DUMP
+	slot->cmd_size = MVS_ATA_CMD_SZ;
+#endif
 
-	/* region 2: open address frame area (MVS_OAF_SZ bytes) **********/
+	/* 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);
@@ -996,40 +1671,49 @@ static int mvs_task_prep_ata(struct mvs_info *mvi,
 	buf_tmp += MVS_OAF_SZ;
 	buf_tmp_dma += MVS_OAF_SZ;
 
-	/* region 3: PRD table ***********************************************/
+	/* region 3: PRD table ********************************************* */
 	buf_prd = buf_tmp;
-	hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
+	if (tei->n_elem)
+		hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
+	else
+		hdr->prd_tbl = 0;
 
 	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) ********/
+	/* 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;
+	req_len = sizeof(struct host_to_dev_fis);
 	resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
-		   sizeof(struct mvs_err_info) - i;
+	    sizeof(struct mvs_err_info) - i;
 
 	/* request, response lengths */
+	resp_len = min(resp_len, max_resp_len);
 	hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
 
+	task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
 	/* 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);
+	memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
+	if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
+		memcpy(buf_cmd + STP_ATAPI_CMD,
+			task->ata_task.atapi_packet, 16);
+
+	/* generate open address frame hdr (first 12 bytes) */
+	buf_oaf[0] = (1 << 7) | (2 << 4) | 0x1;	/* initiator, STP, ftype 1h */
+	buf_oaf[1] = task->dev->linkrate & 0xf;
+	*(u16 *)(buf_oaf + 2) = cpu_to_be16(tag);
+	memcpy(buf_oaf + 4, task->dev->sas_addr, SAS_ADDR_SIZE);
 
 	/* fill in PRD (scatter/gather) table, if any */
-	sg = task->scatter;
-	for (i = 0; i < tei->n_elem; i++) {
+	for_each_sg(task->scatter, sg, 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++;
 	}
 
@@ -1040,23 +1724,25 @@ 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_port *port = tei->port;
 	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;
+	u32 resp_len, req_len, i, tag = tei->tag;
+	const u32 max_resp_len = SB_RFB_MAX;
 
 	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));
+	slot->tx = mvi->tx_prod;
+	mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
+				(TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
+				(port->wide_port_phymap << TXQ_PHY_SHIFT));
 
 	flags = MCH_RETRY;
 	if (task->ssp_task.enable_first_burst) {
@@ -1064,8 +1750,8 @@ static int mvs_task_prep_ssp(struct mvs_info *mvi,
 		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));
+				 (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);
@@ -1073,40 +1759,46 @@ static int mvs_task_prep_ssp(struct mvs_info *mvi,
 	/*
 	 * 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;
+	/* 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;
+#if _MV_DUMP
+	slot->cmd_size = MVS_SSP_CMD_SZ;
+#endif
 
-	/* region 2: open address frame area (MVS_OAF_SZ bytes) **********/
+	/* 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 ***********************************************/
+	/* region 3: PRD table ********************************************* */
 	buf_prd = buf_tmp;
-	hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
+	if (tei->n_elem)
+		hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
+	else
+		hdr->prd_tbl = 0;
 
 	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) ********/
+	/* 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;
+	    sizeof(struct mvs_err_info) - i;
+	resp_len = min(resp_len, max_resp_len);
+
+	req_len = sizeof(struct ssp_frame_hdr) + 28;
 
 	/* request, response lengths */
 	hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
@@ -1114,12 +1806,11 @@ static int mvs_task_prep_ssp(struct mvs_info *mvi,
 	/* 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;
+	*(u16 *)(buf_oaf + 2) = cpu_to_be16(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;
+	/* fill in SSP frame header (Command Table.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);
@@ -1130,18 +1821,14 @@ static int mvs_task_prep_ssp(struct mvs_info *mvi,
 	/* 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);
+	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++) {
+	for_each_sg(task->scatter, sg, 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++;
 	}
 
@@ -1150,77 +1837,157 @@ static int mvs_task_prep_ssp(struct mvs_info *mvi,
 
 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;
+	struct domain_device *dev = task->dev;
+	struct mvs_info *mvi = dev->port->ha->lldd_ha;
+	struct pci_dev *pdev = mvi->pdev;
 	void __iomem *regs = mvi->regs;
-	unsigned long flags;
 	struct mvs_task_exec_info tei;
+	struct sas_task *t = task;
+	u32 tag = 0xdeadbeef, rc, n_elem = 0;
+	unsigned long flags;
+	u32 n = num, pass = 0;
 
-	/* 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;
+	spin_lock_irqsave(&mvi->lock, flags);
 
-	if (task->num_scatter) {
-		n_elem = pci_map_sg(mvi->pdev, task->scatter,
-				    task->num_scatter, task->data_dir);
-		if (!n_elem)
-			return -ENOMEM;
-	}
+	do {
+		tei.port = &mvi->port[dev->port->id];
 
-	spin_lock_irqsave(&mvi->lock, flags);
+		if (!tei.port->port_attached) {
+			struct task_status_struct *ts = &t->task_status;
+			ts->stat = SAS_PHY_DOWN;
+			t->task_done(t);
+			rc = 0;
+			goto exec_exit;
+		}
+		if (!sas_protocol_ata(t->task_proto)) {
+			if (t->num_scatter) {
+				n_elem = pci_map_sg(mvi->pdev, t->scatter,
+						    t->num_scatter,
+						    t->data_dir);
+				if (!n_elem) {
+					rc = -ENOMEM;
+					goto err_out;
+				}
+			}
+		} else {
+			n_elem = t->num_scatter;
+		}
 
-	rc = mvs_tag_alloc(mvi, &tag);
-	if (rc)
-		goto err_out;
+		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;
+		mvi->slot_info[tag].task = t;
+		mvi->slot_info[tag].n_elem = n_elem;
+		memset(mvi->slot_info[tag].buf, 0, MVS_SLOT_BUF_SZ);
+		tei.task = t;
+		tei.hdr = &mvi->slot[tag];
+		tei.tag = tag;
+		tei.n_elem = n_elem;
+
+		switch (t->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:
+		case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
+			rc = mvs_task_prep_ata(mvi, &tei);
+			break;
+		default:
+			dev_printk(KERN_ERR, &pdev->dev,
+				"unknown sas_task proto: 0x%x\n",
+				t->task_proto);
+			rc = -EINVAL;
+			break;
+		}
 
-	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;
 
-	if (rc)
-		goto err_out_tag;
+		/* TODO: select normal or high priority */
 
-	/* TODO: select normal or high priority */
+		spin_lock(&t->task_state_lock);
+		t->task_state_flags |= SAS_TASK_AT_INITIATOR;
+		spin_unlock(&t->task_state_lock);
 
-	mw32(RX_PROD_IDX, mvi->tx_prod);
+		if (n == 1) {
+			spin_unlock_irqrestore(&mvi->lock, flags);
+			mw32(TX_PROD_IDX, mvi->tx_prod);
+		}
+		mvs_hba_memory_dump(mvi, tag, t->task_proto);
 
-	mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_TX_RING_SZ - 1);
+		++pass;
+		mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
 
-	spin_lock(&task->task_state_lock);
-	task->task_state_flags |= SAS_TASK_AT_INITIATOR;
-	spin_unlock(&task->task_state_lock);
+		if (n == 1)
+			break;
+
+		t = list_entry(t->list.next, struct sas_task, list);
+	} while (--n);
 
-	spin_unlock_irqrestore(&mvi->lock, flags);
 	return 0;
 
 err_out_tag:
-	mvs_tag_clear(mvi, tag);
+	mvs_tag_free(mvi, tag);
 err_out:
-	if (n_elem)
-		pci_unmap_sg(mvi->pdev, task->scatter, n_elem, task->data_dir);
+	dev_printk(KERN_ERR, &pdev->dev, "mvsas exec failed[%d]!\n", rc);
+	if (!sas_protocol_ata(t->task_proto))
+		if (n_elem)
+			pci_unmap_sg(mvi->pdev, t->scatter, n_elem,
+				     t->data_dir);
+exec_exit:
+	if (pass)
+		mw32(TX_PROD_IDX, (mvi->tx_prod - 1) & (MVS_CHIP_SLOT_SZ - 1));
 	spin_unlock_irqrestore(&mvi->lock, flags);
 	return rc;
 }
 
+static int mvs_task_abort(struct sas_task *task)
+{
+	int rc = 1;
+	unsigned long flags;
+	struct mvs_info *mvi = task->dev->port->ha->lldd_ha;
+	struct pci_dev *pdev = mvi->pdev;
+
+	spin_lock_irqsave(&task->task_state_lock, flags);
+	if (task->task_state_flags & SAS_TASK_STATE_DONE) {
+		rc = TMF_RESP_FUNC_COMPLETE;
+		goto out_done;
+	}
+	spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+	/*FIXME*/
+	rc = TMF_RESP_FUNC_COMPLETE;
+
+	switch (task->task_proto) {
+	case SAS_PROTOCOL_SMP:
+		dev_printk(KERN_DEBUG, &pdev->dev, "SMP Abort! ");
+		break;
+	case SAS_PROTOCOL_SSP:
+		dev_printk(KERN_DEBUG, &pdev->dev, "SSP Abort! ");
+		break;
+	case SAS_PROTOCOL_SATA:
+	case SAS_PROTOCOL_STP:
+	case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:{
+		dev_printk(KERN_DEBUG, &pdev->dev, "STP Abort! "
+			"Dump D2H FIS: \n");
+		mvs_hexdump(sizeof(struct host_to_dev_fis),
+				(void *)&task->ata_task.fis, 0);
+		dev_printk(KERN_DEBUG, &pdev->dev, "Dump ATAPI Cmd : \n");
+		mvs_hexdump(16, task->ata_task.atapi_packet, 0);
+		break;
+	}
+	default:
+		break;
+	}
+out_done:
+	return rc;
+}
+
 static void mvs_free(struct mvs_info *mvi)
 {
 	int i;
@@ -1238,7 +2005,7 @@ static void mvs_free(struct mvs_info *mvi)
 
 	if (mvi->tx)
 		dma_free_coherent(&mvi->pdev->dev,
-				  sizeof(*mvi->tx) * MVS_TX_RING_SZ,
+				  sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
 				  mvi->tx, mvi->tx_dma);
 	if (mvi->rx_fis)
 		dma_free_coherent(&mvi->pdev->dev, MVS_RX_FISL_SZ,
@@ -1249,10 +2016,12 @@ static void mvs_free(struct mvs_info *mvi)
 				  mvi->rx, mvi->rx_dma);
 	if (mvi->slot)
 		dma_free_coherent(&mvi->pdev->dev,
-				  sizeof(*mvi->slot) * MVS_RX_RING_SZ,
+				  sizeof(*mvi->slot) * MVS_SLOTS,
 				  mvi->slot, mvi->slot_dma);
+#ifdef MVS_ENABLE_PERI
 	if (mvi->peri_regs)
 		iounmap(mvi->peri_regs);
+#endif
 	if (mvi->regs)
 		iounmap(mvi->regs);
 	if (mvi->shost)
@@ -1267,42 +2036,39 @@ 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);
+	tmp = mvs_read_phy_ctl(mvi, phy_id);
 
 	switch (func) {
-	case PHY_FUNC_SET_LINK_RATE: {
-		struct sas_phy_linkrates *rates = funcdata;
-		u32 lrmin = 0, lrmax = 0;
+	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);
+			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;
+			if (lrmin) {
+				tmp &= ~(0xf << 8);
+				tmp |= lrmin;
+			}
+			if (lrmax) {
+				tmp &= ~(0xf << 12);
+				tmp |= lrmax;
+			}
+			mvs_write_phy_ctl(mvi, phy_id, tmp);
+			break;
 		}
-		writel(tmp, reg);
-		break;
-	}
 
 	case PHY_FUNC_HARD_RESET:
-		tmp = readl(reg);
 		if (tmp & PHY_RST_HARD)
 			break;
-		writel(tmp | PHY_RST_HARD, reg);
+		mvs_write_phy_ctl(mvi, phy_id, tmp | PHY_RST_HARD);
 		break;
 
 	case PHY_FUNC_LINK_RESET:
-		writel(readl(reg) | PHY_RST, reg);
+		mvs_write_phy_ctl(mvi, phy_id, tmp | PHY_RST);
 		break;
 
 	case PHY_FUNC_DISABLE:
@@ -1335,11 +2101,11 @@ static void __devinit mvs_phy_init(struct mvs_info *mvi, int phy_id)
 	sas_phy->lldd_phy = phy;
 }
 
-static struct mvs_info * __devinit mvs_alloc(struct pci_dev *pdev,
-				const struct pci_device_id *ent)
+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;
+	unsigned long res_start, res_len, res_flag;
 	struct asd_sas_phy **arr_phy;
 	struct asd_sas_port **arr_port;
 	const struct mvs_chip_info *chip = &mvs_chips[ent->driver_data];
@@ -1381,9 +2147,10 @@ static struct mvs_info * __devinit mvs_alloc(struct pci_dev *pdev,
 
 	SHOST_TO_SAS_HA(mvi->shost) = &mvi->sas;
 	mvi->shost->transportt = mvs_stt;
-	mvi->shost->max_id = ~0;
+	mvi->shost->max_id = 21;
 	mvi->shost->max_lun = ~0;
-	mvi->shost->max_cmd_len = ~0;
+	mvi->shost->max_channel = 0;
+	mvi->shost->max_cmd_len = 16;
 
 	mvi->sas.sas_ha_name = DRV_NAME;
 	mvi->sas.dev = &pdev->dev;
@@ -1392,32 +2159,40 @@ static struct mvs_info * __devinit mvs_alloc(struct pci_dev *pdev,
 	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_max_execute_num = MVS_CHIP_SLOT_SZ - 1;
+	mvi->sas.lldd_queue_size = MVS_QUEUE_SIZE;
+	mvi->can_queue = (MVS_CHIP_SLOT_SZ >> 1) - 1;
 	mvi->sas.lldd_ha = mvi;
 	mvi->sas.core.shost = mvi->shost;
 
-	mvs_tag_set(mvi, MVS_TX_RING_SZ - 1);
+	mvs_tag_init(mvi);
 
 	/*
 	 * ioremap main and peripheral registers
 	 */
 
+#ifdef MVS_ENABLE_PERI
 	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)
+	if (!mvi->peri_regs)
 		goto err_out;
+#endif
 
 	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);
+	res_flag = pci_resource_flags(pdev, 4);
+	if (res_flag & IORESOURCE_CACHEABLE)
+		mvi->regs = ioremap(res_start, res_len);
+	else
+		mvi->regs = ioremap_nocache(res_start, res_len);
+
 	if (!mvi->regs)
 		goto err_out;
 
@@ -1426,14 +2201,14 @@ static struct mvs_info * __devinit mvs_alloc(struct pci_dev *pdev,
 	 */
 
 	mvi->tx = dma_alloc_coherent(&pdev->dev,
-				     sizeof(*mvi->tx) * MVS_TX_RING_SZ,
+				     sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
 				     &mvi->tx_dma, GFP_KERNEL);
 	if (!mvi->tx)
 		goto err_out;
-	memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_TX_RING_SZ);
+	memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ);
 
 	mvi->rx_fis = dma_alloc_coherent(&pdev->dev, MVS_RX_FISL_SZ,
-				     &mvi->rx_fis_dma, GFP_KERNEL);
+					 &mvi->rx_fis_dma, GFP_KERNEL);
 	if (!mvi->rx_fis)
 		goto err_out;
 	memset(mvi->rx_fis, 0, MVS_RX_FISL_SZ);
@@ -1459,7 +2234,7 @@ static struct mvs_info * __devinit mvs_alloc(struct pci_dev *pdev,
 		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);
+					       &slot->buf_dma, GFP_KERNEL);
 		if (!slot->buf)
 			goto err_out;
 		memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
@@ -1468,7 +2243,6 @@ static struct mvs_info * __devinit mvs_alloc(struct pci_dev *pdev,
 	/* 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:
@@ -1488,26 +2262,89 @@ static void mvs_cw32(void __iomem *regs, u32 addr, u32 val)
 	mw32(CMD_DATA, val);
 }
 
-#if 0
-static u32 mvs_phy_read(struct mvs_info *mvi, unsigned int phy_id, u32 addr)
+static u32 mvs_read_phy_ctl(struct mvs_info *mvi, u32 port)
 {
 	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);
+	return (port < 4)?mr32(P0_SER_CTLSTAT + port * 4):
+		mr32(P4_SER_CTLSTAT + (port - 4) * 4);
 }
-#endif
 
-static void mvs_phy_write(struct mvs_info *mvi, unsigned int phy_id,
-			  u32 addr, u32 val)
+static void mvs_write_phy_ctl(struct mvs_info *mvi, u32 port, u32 val)
 {
 	void __iomem *regs = mvi->regs;
-	void __iomem *phy_regs = regs + MVS_P0_CFG_ADDR + (phy_id * 8);
+	if (port < 4)
+		mw32(P0_SER_CTLSTAT + port * 4, val);
+	else
+		mw32(P4_SER_CTLSTAT + (port - 4) * 4, val);
+}
+
+static u32 mvs_read_port(struct mvs_info *mvi, u32 off, u32 off2, u32 port)
+{
+	void __iomem *regs = mvi->regs + off;
+	void __iomem *regs2 = mvi->regs + off2;
+	return (port < 4)?readl(regs + port * 8):
+		readl(regs2 + (port - 4) * 8);
+}
+
+static void mvs_write_port(struct mvs_info *mvi, u32 off, u32 off2,
+				u32 port, u32 val)
+{
+	void __iomem *regs = mvi->regs + off;
+	void __iomem *regs2 = mvi->regs + off2;
+	if (port < 4)
+		writel(val, regs + port * 8);
+	else
+		writel(val, regs2 + (port - 4) * 8);
+}
+
+static u32 mvs_read_port_cfg_data(struct mvs_info *mvi, u32 port)
+{
+	return mvs_read_port(mvi, MVS_P0_CFG_DATA, MVS_P4_CFG_DATA, port);
+}
+
+static void mvs_write_port_cfg_data(struct mvs_info *mvi, u32 port, u32 val)
+{
+	mvs_write_port(mvi, MVS_P0_CFG_DATA, MVS_P4_CFG_DATA, port, val);
+}
+
+static void mvs_write_port_cfg_addr(struct mvs_info *mvi, u32 port, u32 addr)
+{
+	mvs_write_port(mvi, MVS_P0_CFG_ADDR, MVS_P4_CFG_ADDR, port, addr);
+}
+
+static u32 mvs_read_port_vsr_data(struct mvs_info *mvi, u32 port)
+{
+	return mvs_read_port(mvi, MVS_P0_VSR_DATA, MVS_P4_VSR_DATA, port);
+}
+
+static void mvs_write_port_vsr_data(struct mvs_info *mvi, u32 port, u32 val)
+{
+	mvs_write_port(mvi, MVS_P0_VSR_DATA, MVS_P4_VSR_DATA, port, val);
+}
+
+static void mvs_write_port_vsr_addr(struct mvs_info *mvi, u32 port, u32 addr)
+{
+	mvs_write_port(mvi, MVS_P0_VSR_ADDR, MVS_P4_VSR_ADDR, port, addr);
+}
+
+static u32 mvs_read_port_irq_stat(struct mvs_info *mvi, u32 port)
+{
+	return mvs_read_port(mvi, MVS_P0_INT_STAT, MVS_P4_INT_STAT, port);
+}
+
+static void mvs_write_port_irq_stat(struct mvs_info *mvi, u32 port, u32 val)
+{
+	mvs_write_port(mvi, MVS_P0_INT_STAT, MVS_P4_INT_STAT, port, val);
+}
+
+static u32 mvs_read_port_irq_mask(struct mvs_info *mvi, u32 port)
+{
+	return mvs_read_port(mvi, MVS_P0_INT_MASK, MVS_P4_INT_MASK, port);
+}
 
-	writel(addr, phy_regs);
-	writel(val, phy_regs + 4);
-	readl(phy_regs);	/* flush */
+static void mvs_write_port_irq_mask(struct mvs_info *mvi, u32 port, u32 val)
+{
+	mvs_write_port(mvi, MVS_P0_INT_MASK, MVS_P4_INT_MASK, port, val);
 }
 
 static void __devinit mvs_phy_hacks(struct mvs_info *mvi)
@@ -1547,6 +2384,260 @@ static void __devinit mvs_phy_hacks(struct mvs_info *mvi)
 	tmp &= 0x1fffffff;
 	tmp |= (2U << 29);	/* 8 ms retry */
 	mvs_cw32(regs, CMD_PHY_TIMER, tmp);
+
+	/* TEST - for phy decoding error, adjust voltage levels */
+	mw32(P0_VSR_ADDR + 0, 0x8);
+	mw32(P0_VSR_DATA + 0, 0x2F0);
+
+	mw32(P0_VSR_ADDR + 8, 0x8);
+	mw32(P0_VSR_DATA + 8, 0x2F0);
+
+	mw32(P0_VSR_ADDR + 16, 0x8);
+	mw32(P0_VSR_DATA + 16, 0x2F0);
+
+	mw32(P0_VSR_ADDR + 24, 0x8);
+	mw32(P0_VSR_DATA + 24, 0x2F0);
+
+}
+
+static void mvs_enable_xmt(struct mvs_info *mvi, int PhyId)
+{
+	void __iomem *regs = mvi->regs;
+	u32 tmp;
+
+	tmp = mr32(PCS);
+	if (mvi->chip->n_phy <= 4)
+		tmp |= 1 << (PhyId + PCS_EN_PORT_XMT_SHIFT);
+	else
+		tmp |= 1 << (PhyId + PCS_EN_PORT_XMT_SHIFT2);
+	mw32(PCS, tmp);
+}
+
+static void mvs_detect_porttype(struct mvs_info *mvi, int i)
+{
+	void __iomem *regs = mvi->regs;
+	u32 reg;
+	struct mvs_phy *phy = &mvi->phy[i];
+
+	/* TODO check & save device type */
+	reg = mr32(GBL_PORT_TYPE);
+
+	if (reg & MODE_SAS_SATA & (1 << i))
+		phy->phy_type |= PORT_TYPE_SAS;
+	else
+		phy->phy_type |= PORT_TYPE_SATA;
+}
+
+static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
+{
+	u32 *s = (u32 *) buf;
+
+	if (!s)
+		return NULL;
+
+	mvs_write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
+	s[3] = mvs_read_port_cfg_data(mvi, i);
+
+	mvs_write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
+	s[2] = mvs_read_port_cfg_data(mvi, i);
+
+	mvs_write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
+	s[1] = mvs_read_port_cfg_data(mvi, i);
+
+	mvs_write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
+	s[0] = mvs_read_port_cfg_data(mvi, i);
+
+	return (void *)s;
+}
+
+static u32 mvs_is_sig_fis_received(u32 irq_status)
+{
+	return irq_status & PHYEV_SIG_FIS;
+}
+
+static void mvs_update_wideport(struct mvs_info *mvi, int i)
+{
+	struct mvs_phy *phy = &mvi->phy[i];
+	struct mvs_port *port = phy->port;
+	int j, no;
+
+	for_each_phy(port->wide_port_phymap, no, j, mvi->chip->n_phy)
+		if (no & 1) {
+			mvs_write_port_cfg_addr(mvi, no, PHYR_WIDE_PORT);
+			mvs_write_port_cfg_data(mvi, no,
+						port->wide_port_phymap);
+		} else {
+			mvs_write_port_cfg_addr(mvi, no, PHYR_WIDE_PORT);
+			mvs_write_port_cfg_data(mvi, no, 0);
+		}
+}
+
+static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
+{
+	u32 tmp;
+	struct mvs_phy *phy = &mvi->phy[i];
+	struct mvs_port *port;
+
+	tmp = mvs_read_phy_ctl(mvi, i);
+
+	if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
+		if (!phy->port)
+			phy->phy_attached = 1;
+		return tmp;
+	}
+
+	port = phy->port;
+	if (port) {
+		if (phy->phy_type & PORT_TYPE_SAS) {
+			port->wide_port_phymap &= ~(1U << i);
+			if (!port->wide_port_phymap)
+				port->port_attached = 0;
+			mvs_update_wideport(mvi, i);
+		} else if (phy->phy_type & PORT_TYPE_SATA)
+			port->port_attached = 0;
+		mvs_free_reg_set(mvi, phy->port);
+		phy->port = NULL;
+		phy->phy_attached = 0;
+		phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
+	}
+	return 0;
+}
+
+static void mvs_update_phyinfo(struct mvs_info *mvi, int i,
+					int get_st)
+{
+	struct mvs_phy *phy = &mvi->phy[i];
+	struct pci_dev *pdev = mvi->pdev;
+	u32 tmp, j;
+	u64 tmp64;
+
+	mvs_write_port_cfg_addr(mvi, i, PHYR_IDENTIFY);
+	phy->dev_info = mvs_read_port_cfg_data(mvi, i);
+
+	mvs_write_port_cfg_addr(mvi, i, PHYR_ADDR_HI);
+	phy->dev_sas_addr = (u64) mvs_read_port_cfg_data(mvi, i) << 32;
+
+	mvs_write_port_cfg_addr(mvi, i, PHYR_ADDR_LO);
+	phy->dev_sas_addr |= mvs_read_port_cfg_data(mvi, i);
+
+	if (get_st) {
+		phy->irq_status = mvs_read_port_irq_stat(mvi, i);
+		phy->phy_status = mvs_is_phy_ready(mvi, i);
+	}
+
+	if (phy->phy_status) {
+		u32 phy_st;
+		struct asd_sas_phy *sas_phy = mvi->sas.sas_phy[i];
+
+		mvs_write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
+		phy_st = mvs_read_port_cfg_data(mvi, i);
+
+		sas_phy->linkrate =
+			(phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
+				PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET;
+
+		/* Updated attached_sas_addr */
+		mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_ADDR_HI);
+		phy->att_dev_sas_addr =
+				(u64) mvs_read_port_cfg_data(mvi, i) << 32;
+
+		mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_ADDR_LO);
+		phy->att_dev_sas_addr |= mvs_read_port_cfg_data(mvi, i);
+
+		dev_printk(KERN_DEBUG, &pdev->dev,
+			"phy[%d] Get Attached Address 0x%llX ,"
+			" SAS Address 0x%llX\n",
+			i, phy->att_dev_sas_addr, phy->dev_sas_addr);
+		dev_printk(KERN_DEBUG, &pdev->dev,
+			"Rate = %x , type = %d\n",
+			sas_phy->linkrate, phy->phy_type);
+
+#if 1
+		/*
+		* If the device is capable of supporting a wide port
+		* on its phys, it may configure the phys as a wide port.
+		*/
+		if (phy->phy_type & PORT_TYPE_SAS)
+			for (j = 0; j < mvi->chip->n_phy && j != i; ++j) {
+				if ((mvi->phy[j].phy_attached) &&
+					(mvi->phy[j].phy_type & PORT_TYPE_SAS))
+					if (phy->att_dev_sas_addr ==
+					mvi->phy[j].att_dev_sas_addr - 1) {
+						phy->att_dev_sas_addr =
+						mvi->phy[j].att_dev_sas_addr;
+						break;
+					}
+			}
+
+#endif
+
+		tmp64 = cpu_to_be64(phy->att_dev_sas_addr);
+		memcpy(sas_phy->attached_sas_addr, &tmp64, SAS_ADDR_SIZE);
+
+		if (phy->phy_type & PORT_TYPE_SAS) {
+			mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_DEV_INFO);
+			phy->att_dev_info = mvs_read_port_cfg_data(mvi, i);
+			phy->identify.device_type =
+			    phy->att_dev_info & PORT_DEV_TYPE_MASK;
+
+			if (phy->identify.device_type == SAS_END_DEV)
+				phy->identify.target_port_protocols =
+							SAS_PROTOCOL_SSP;
+			else if (phy->identify.device_type != NO_DEVICE)
+				phy->identify.target_port_protocols =
+							SAS_PROTOCOL_SMP;
+			if (phy_st & PHY_OOB_DTCTD)
+				sas_phy->oob_mode = SAS_OOB_MODE;
+			phy->frame_rcvd_size =
+			    sizeof(struct sas_identify_frame);
+		} else if (phy->phy_type & PORT_TYPE_SATA) {
+			phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
+			if (mvs_is_sig_fis_received(phy->irq_status)) {
+				if (phy_st & PHY_OOB_DTCTD)
+					sas_phy->oob_mode = SATA_OOB_MODE;
+				phy->frame_rcvd_size =
+				    sizeof(struct dev_to_host_fis);
+				mvs_get_d2h_reg(mvi, i,
+						(void *)sas_phy->frame_rcvd);
+			} else {
+				dev_printk(KERN_DEBUG, &pdev->dev,
+					"No sig fis\n");
+			}
+		}
+		/* workaround for HW phy decoding error on 1.5g disk drive */
+		mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE6);
+		tmp = mvs_read_port_vsr_data(mvi, i);
+		if (((phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
+		     PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET) ==
+			SAS_LINK_RATE_1_5_GBPS)
+			tmp &= ~PHY_MODE6_DTL_SPEED;
+		else
+			tmp |= PHY_MODE6_DTL_SPEED;
+		mvs_write_port_vsr_data(mvi, i, tmp);
+
+	}
+	if (get_st)
+		mvs_write_port_irq_stat(mvi, i, phy->irq_status);
+}
+
+static void mvs_port_formed(struct asd_sas_phy *sas_phy)
+{
+	struct sas_ha_struct *sas_ha = sas_phy->ha;
+	struct mvs_info *mvi = sas_ha->lldd_ha;
+	struct asd_sas_port *sas_port = sas_phy->port;
+	struct mvs_phy *phy = sas_phy->lldd_phy;
+	struct mvs_port *port = &mvi->port[sas_port->id];
+	unsigned long flags;
+
+	spin_lock_irqsave(&mvi->lock, flags);
+	port->port_attached = 1;
+	phy->port = port;
+	port->taskfileset = MVS_ID_NOT_MAPPED;
+	if (phy->phy_type & PORT_TYPE_SAS) {
+		port->wide_port_phymap = sas_port->phy_mask;
+		mvs_update_wideport(mvi, sas_phy->id);
+	}
+	spin_unlock_irqrestore(&mvi->lock, flags);
 }
 
 static int __devinit mvs_hw_init(struct mvs_info *mvi)
@@ -1559,6 +2650,7 @@ static int __devinit mvs_hw_init(struct mvs_info *mvi)
 	mw32(GBL_CTL, 0);
 	tmp = mr32(GBL_CTL);
 
+	/* Reset Controller */
 	if (!(tmp & HBA_RST)) {
 		if (mvi->flags & MVF_PHY_PWR_FIX) {
 			pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
@@ -1576,7 +2668,6 @@ static int __devinit mvs_hw_init(struct mvs_info *mvi)
 		mw32_f(GBL_CTL, HBA_RST);
 	}
 
-
 	/* wait for reset to finish; timeout is just a guess */
 	i = 1000;
 	while (i-- > 0) {
@@ -1590,6 +2681,7 @@ static int __devinit mvs_hw_init(struct mvs_info *mvi)
 		return -EBUSY;
 	}
 
+	/* Init Chip */
 	/* make sure RST is set; HBA_RST /should/ have done that for us */
 	cctl = mr32(CTL);
 	if (cctl & CCTL_RST)
@@ -1597,6 +2689,12 @@ static int __devinit mvs_hw_init(struct mvs_info *mvi)
 	else
 		mw32_f(CTL, cctl | CCTL_RST);
 
+	/* write to device control _AND_ device status register? - A.C. */
+	pci_read_config_dword(mvi->pdev, PCR_DEV_CTRL, &tmp);
+	tmp &= ~PRD_REQ_MASK;
+	tmp |= PRD_REQ_SIZE;
+	pci_write_config_dword(mvi->pdev, PCR_DEV_CTRL, tmp);
+
 	pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
 	tmp |= PCTL_PWR_ON;
 	tmp &= ~PCTL_OFF;
@@ -1609,6 +2707,9 @@ static int __devinit mvs_hw_init(struct mvs_info *mvi)
 
 	mw32_f(CTL, cctl);
 
+	/* reset control */
+	mw32(PCS, 0);		/*MVS_PCS */
+
 	mvs_phy_hacks(mvi);
 
 	mw32(CMD_LIST_LO, mvi->slot_dma);
@@ -1617,7 +2718,7 @@ static int __devinit mvs_hw_init(struct mvs_info *mvi)
 	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_CFG, MVS_CHIP_SLOT_SZ);
 	mw32(TX_LO, mvi->tx_dma);
 	mw32(TX_HI, (mvi->tx_dma >> 16) >> 16);
 
@@ -1625,44 +2726,88 @@ static int __devinit mvs_hw_init(struct mvs_info *mvi)
 	mw32(RX_LO, mvi->rx_dma);
 	mw32(RX_HI, (mvi->rx_dma >> 16) >> 16);
 
+	/* enable auto port detection */
+	mw32(GBL_PORT_TYPE, MODE_AUTO_DET_EN);
+	msleep(100);
 	/* 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]);
+		u32 lo = *((u32 *)&mvi->sas_addr[0]);
+		u32 hi = *((u32 *)&mvi->sas_addr[4]);
+
+		mvs_detect_porttype(mvi, i);
 
 		/* set phy local SAS address */
-		mvs_phy_write(mvi, i, PHYR_ADDR_LO, lo);
-		mvs_phy_write(mvi, i, PHYR_ADDR_HI, hi);
+		mvs_write_port_cfg_addr(mvi, i, PHYR_ADDR_LO);
+		mvs_write_port_cfg_data(mvi, i, lo);
+		mvs_write_port_cfg_addr(mvi, i, PHYR_ADDR_HI);
+		mvs_write_port_cfg_data(mvi, i, hi);
 
 		/* reset phy */
-		tmp = readl(regs + MVS_P0_SER_CTLSTAT + (i * 4));
+		tmp = mvs_read_phy_ctl(mvi, i);
 		tmp |= PHY_RST;
-		writel(tmp, regs + MVS_P0_SER_CTLSTAT + (i * 4));
+		mvs_write_phy_ctl(mvi, i, tmp);
 	}
 
 	msleep(100);
 
 	for (i = 0; i < mvi->chip->n_phy; i++) {
+		/* clear phy int status */
+		tmp = mvs_read_port_irq_stat(mvi, i);
+		tmp &= ~PHYEV_SIG_FIS;
+		mvs_write_port_irq_stat(mvi, i, tmp);
+
 		/* set phy int mask */
-		writel(PHYEV_BROAD_CH | PHYEV_RDY_CH,
-		       regs + MVS_P0_INT_MASK + (i * 8));
+		tmp = PHYEV_RDY_CH | PHYEV_BROAD_CH | PHYEV_UNASSOC_FIS |
+			PHYEV_ID_DONE | PHYEV_DEC_ERR;
+		mvs_write_port_irq_mask(mvi, i, tmp);
 
-		/* clear phy int status */
-		tmp = readl(regs + MVS_P0_INT_STAT + (i * 8));
-		writel(tmp, regs + MVS_P0_INT_STAT + (i * 8));
+		msleep(100);
+		mvs_update_phyinfo(mvi, i, 1);
+		mvs_enable_xmt(mvi, i);
 	}
 
 	/* FIXME: update wide port bitmaps */
 
+	/* little endian for open address and command table, etc. */
+	/* A.C.
+	 * it seems that ( from the spec ) turning on big-endian won't
+	 * do us any good on big-endian machines, need further confirmation
+	 */
+	cctl = mr32(CTL);
+	cctl |= CCTL_ENDIAN_CMD;
+	cctl |= CCTL_ENDIAN_DATA;
+	cctl &= ~CCTL_ENDIAN_OPEN;
+	cctl |= CCTL_ENDIAN_RSP;
+	mw32_f(CTL, cctl);
+
+	/* reset CMD queue */
+	tmp = mr32(PCS);
+	tmp |= PCS_CMD_RST;
+	mw32(PCS, tmp);
+	/* interrupt coalescing may cause missing HW interrput in some case,
+	 * and the max count is 0x1ff, while our max slot is 0x200,
+	 * it will make count 0.
+	 */
+	tmp = 0;
+	mw32(INT_COAL, tmp);
+
+	tmp = 0x100;
+	mw32(INT_COAL_TMOUT, tmp);
+
 	/* ladies and gentlemen, start your engines */
-	mw32(TX_CFG, MVS_TX_RING_SZ | TX_EN);
+	mw32(TX_CFG, 0);
+	mw32(TX_CFG, MVS_CHIP_SLOT_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));
+	/* enable CMD/CMPL_Q/RESP mode */
+	mw32(PCS, PCS_SATA_RETRY | PCS_FIS_RX_EN | PCS_CMD_EN);
 
 	/* re-enable interrupts globally */
-	mw32(GBL_CTL, INT_EN);
+	mvs_hba_interrupt_enable(mvi);
+
+	/* enable completion queue interrupt */
+	tmp = (CINT_PORT_MASK | CINT_DONE | CINT_MEM);
+	mw32(INT_MASK, tmp);
 
 	return 0;
 }
@@ -1680,7 +2825,7 @@ static void __devinit mvs_print_info(struct mvs_info *mvi)
 }
 
 static int __devinit mvs_pci_init(struct pci_dev *pdev,
-				 const struct pci_device_id *ent)
+				  const struct pci_device_id *ent)
 {
 	int rc;
 	struct mvs_info *mvi;
@@ -1710,10 +2855,16 @@ static int __devinit mvs_pci_init(struct pci_dev *pdev,
 	if (rc)
 		goto err_out_mvi;
 
+#ifndef MVS_DISABLE_MSI
 	if (!pci_enable_msi(pdev)) {
+		u32 tmp;
+		void __iomem *regs = mvi->regs;
 		mvi->flags |= MVF_MSI;
 		irq_handler = mvs_msi_interrupt;
+		tmp = mr32(PCS);
+		mw32(PCS, tmp | PCS_SELF_CLEAR);
 	}
+#endif
 
 	rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED, DRV_NAME, mvi);
 	if (rc)
@@ -1732,6 +2883,7 @@ static int __devinit mvs_pci_init(struct pci_dev *pdev,
 	mvs_print_info(mvi);
 
 	scsi_scan_host(mvi->shost);
+
 	return 0;
 
 err_out_shost:
@@ -1756,21 +2908,26 @@ static void __devexit mvs_pci_remove(struct pci_dev *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);
+	if (mvi) {
+		sas_unregister_ha(&mvi->sas);
+		mvs_hba_interrupt_disable(mvi);
+		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,
+	.lldd_abort_task	= mvs_task_abort,
+	.lldd_port_formed	= mvs_port_formed
 };
 
 static struct pci_device_id __devinitdata mvs_pci_table[] = {
@@ -1822,4 +2979,3 @@ MODULE_DESCRIPTION("Marvell 88SE6440 SAS/SATA controller driver");
 MODULE_VERSION(DRV_VERSION);
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, mvs_pci_table);
-