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mvsas.c
2969 lines (2485 loc) · 77.9 KB
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mvsas.c
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/*
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
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 <linux/ctype.h>
#include <scsi/libsas.h>
#include <asm/io.h>
#define DRV_NAME "mvsas"
#define DRV_VERSION "0.5.1"
#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 { \
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) */
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 = 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 */
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 = 0xa0, /* 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_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) */
/* 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 {
/* 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 */
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 */
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 << 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,
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 */
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 */
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_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 << 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 {
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 = 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_DEV_CTRL = 0xE8,
};
enum pci_cfg_register_bits {
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 */
};
enum chip_flavors {
chip_6320,
chip_6440,
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 {
u32 n_phy;
u32 srs_sz;
u32 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;
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;
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 {
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;
unsigned long tags[MVS_SLOTS];
struct mvs_slot_info slot_info[MVS_SLOTS];
/* 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_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 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_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,
.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,
.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 = mvs_sas_slave_alloc,
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
};
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)
{
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, u32 tag)
{
mvi->tag_in = (mvi->tag_in + 1) & (MVS_SLOTS - 1);
mvi->tags[mvi->tag_in] = tag;
}
static void mvs_tag_free(struct mvs_info *mvi, u32 tag)
{
mvi->tag_out = (mvi->tag_out - 1) & (MVS_SLOTS - 1);
}
static int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
{
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 void mvs_tag_init(struct mvs_info *mvi)
{
int i;
for (i = 0; i < MVS_SLOTS; ++i)
mvi->tags[i] = i;
mvi->tag_out = 0;
mvi->tag_in = MVS_SLOTS - 1;
}
#ifndef MVS_DISABLE_NVRAM
static int mvs_eep_read(void __iomem *regs, u32 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, u32 addr,
void *buf, u32 buflen)
{
u32 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;
}
#endif
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;
u32 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 = ((u32)hdr[0]) + ((u32)hdr[1]);
for (i = 0; i < buflen; i++)
sum += ((u32)tmp[i]);
if (sum) {
msg = "nvram checksum failure";
rc = -EILSEQ;
goto err_out;
}