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linux/drivers/scsi/stex.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h 
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

1422 lines
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/*
* SuperTrak EX Series Storage Controller driver for Linux
*
* Copyright (C) 2005, 2006 Promise Technology Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Written By:
* Ed Lin <promise_linux@promise.com>
*
*/
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/time.h>
#include <linux/pci.h>
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/byteorder.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#define DRV_NAME "stex"
#define ST_DRIVER_VERSION "3.1.0.1"
#define ST_VER_MAJOR 3
#define ST_VER_MINOR 1
#define ST_OEM 0
#define ST_BUILD_VER 1
enum {
/* MU register offset */
IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */
IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */
OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
IDBL = 0x20, /* MU_INBOUND_DOORBELL */
IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */
ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */
OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
/* MU register value */
MU_INBOUND_DOORBELL_HANDSHAKE = 1,
MU_INBOUND_DOORBELL_REQHEADCHANGED = 2,
MU_INBOUND_DOORBELL_STATUSTAILCHANGED = 4,
MU_INBOUND_DOORBELL_HMUSTOPPED = 8,
MU_INBOUND_DOORBELL_RESET = 16,
MU_OUTBOUND_DOORBELL_HANDSHAKE = 1,
MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = 2,
MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = 4,
MU_OUTBOUND_DOORBELL_BUSCHANGE = 8,
MU_OUTBOUND_DOORBELL_HASEVENT = 16,
/* MU status code */
MU_STATE_STARTING = 1,
MU_STATE_FMU_READY_FOR_HANDSHAKE = 2,
MU_STATE_SEND_HANDSHAKE_FRAME = 3,
MU_STATE_STARTED = 4,
MU_STATE_RESETTING = 5,
MU_MAX_DELAY = 120,
MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000,
MU_HARD_RESET_WAIT = 30000,
HMU_PARTNER_TYPE = 2,
/* firmware returned values */
SRB_STATUS_SUCCESS = 0x01,
SRB_STATUS_ERROR = 0x04,
SRB_STATUS_BUSY = 0x05,
SRB_STATUS_INVALID_REQUEST = 0x06,
SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
SRB_SEE_SENSE = 0x80,
/* task attribute */
TASK_ATTRIBUTE_SIMPLE = 0x0,
TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
TASK_ATTRIBUTE_ORDERED = 0x2,
TASK_ATTRIBUTE_ACA = 0x4,
/* request count, etc. */
MU_MAX_REQUEST = 32,
/* one message wasted, use MU_MAX_REQUEST+1
to handle MU_MAX_REQUEST messages */
MU_REQ_COUNT = (MU_MAX_REQUEST + 1),
MU_STATUS_COUNT = (MU_MAX_REQUEST + 1),
STEX_CDB_LENGTH = MAX_COMMAND_SIZE,
REQ_VARIABLE_LEN = 1024,
STATUS_VAR_LEN = 128,
ST_CAN_QUEUE = MU_MAX_REQUEST,
ST_CMD_PER_LUN = MU_MAX_REQUEST,
ST_MAX_SG = 32,
/* sg flags */
SG_CF_EOT = 0x80, /* end of table */
SG_CF_64B = 0x40, /* 64 bit item */
SG_CF_HOST = 0x20, /* sg in host memory */
ST_MAX_ARRAY_SUPPORTED = 16,
ST_MAX_TARGET_NUM = (ST_MAX_ARRAY_SUPPORTED+1),
ST_MAX_LUN_PER_TARGET = 16,
st_shasta = 0,
st_vsc = 1,
st_vsc1 = 2,
st_yosemite = 3,
PASSTHRU_REQ_TYPE = 0x00000001,
PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
ST_INTERNAL_TIMEOUT = 30,
ST_TO_CMD = 0,
ST_FROM_CMD = 1,
/* vendor specific commands of Promise */
MGT_CMD = 0xd8,
SINBAND_MGT_CMD = 0xd9,
ARRAY_CMD = 0xe0,
CONTROLLER_CMD = 0xe1,
DEBUGGING_CMD = 0xe2,
PASSTHRU_CMD = 0xe3,
PASSTHRU_GET_ADAPTER = 0x05,
PASSTHRU_GET_DRVVER = 0x10,
CTLR_CONFIG_CMD = 0x03,
CTLR_SHUTDOWN = 0x0d,
CTLR_POWER_STATE_CHANGE = 0x0e,
CTLR_POWER_SAVING = 0x01,
PASSTHRU_SIGNATURE = 0x4e415041,
MGT_CMD_SIGNATURE = 0xba,
INQUIRY_EVPD = 0x01,
ST_ADDITIONAL_MEM = 0x200000,
};
/* SCSI inquiry data */
typedef struct st_inq {
u8 DeviceType :5;
u8 DeviceTypeQualifier :3;
u8 DeviceTypeModifier :7;
u8 RemovableMedia :1;
u8 Versions;
u8 ResponseDataFormat :4;
u8 HiSupport :1;
u8 NormACA :1;
u8 ReservedBit :1;
u8 AERC :1;
u8 AdditionalLength;
u8 Reserved[2];
u8 SoftReset :1;
u8 CommandQueue :1;
u8 Reserved2 :1;
u8 LinkedCommands :1;
u8 Synchronous :1;
u8 Wide16Bit :1;
u8 Wide32Bit :1;
u8 RelativeAddressing :1;
u8 VendorId[8];
u8 ProductId[16];
u8 ProductRevisionLevel[4];
u8 VendorSpecific[20];
u8 Reserved3[40];
} ST_INQ;
struct st_sgitem {
u8 ctrl; /* SG_CF_xxx */
u8 reserved[3];
__le32 count;
__le32 addr;
__le32 addr_hi;
};
struct st_sgtable {
__le16 sg_count;
__le16 max_sg_count;
__le32 sz_in_byte;
struct st_sgitem table[ST_MAX_SG];
};
struct handshake_frame {
__le32 rb_phy; /* request payload queue physical address */
__le32 rb_phy_hi;
__le16 req_sz; /* size of each request payload */
__le16 req_cnt; /* count of reqs the buffer can hold */
__le16 status_sz; /* size of each status payload */
__le16 status_cnt; /* count of status the buffer can hold */
__le32 hosttime; /* seconds from Jan 1, 1970 (GMT) */
__le32 hosttime_hi;
u8 partner_type; /* who sends this frame */
u8 reserved0[7];
__le32 partner_ver_major;
__le32 partner_ver_minor;
__le32 partner_ver_oem;
__le32 partner_ver_build;
__le32 extra_offset; /* NEW */
__le32 extra_size; /* NEW */
u32 reserved1[2];
};
struct req_msg {
__le16 tag;
u8 lun;
u8 target;
u8 task_attr;
u8 task_manage;
u8 prd_entry;
u8 payload_sz; /* payload size in 4-byte, not used */
u8 cdb[STEX_CDB_LENGTH];
u8 variable[REQ_VARIABLE_LEN];
};
struct status_msg {
__le16 tag;
u8 lun;
u8 target;
u8 srb_status;
u8 scsi_status;
u8 reserved;
u8 payload_sz; /* payload size in 4-byte */
u8 variable[STATUS_VAR_LEN];
};
struct ver_info {
u32 major;
u32 minor;
u32 oem;
u32 build;
u32 reserved[2];
};
struct st_frame {
u32 base[6];
u32 rom_addr;
struct ver_info drv_ver;
struct ver_info bios_ver;
u32 bus;
u32 slot;
u32 irq_level;
u32 irq_vec;
u32 id;
u32 subid;
u32 dimm_size;
u8 dimm_type;
u8 reserved[3];
u32 channel;
u32 reserved1;
};
struct st_drvver {
u32 major;
u32 minor;
u32 oem;
u32 build;
u32 signature[2];
u8 console_id;
u8 host_no;
u8 reserved0[2];
u32 reserved[3];
};
#define MU_REQ_BUFFER_SIZE (MU_REQ_COUNT * sizeof(struct req_msg))
#define MU_STATUS_BUFFER_SIZE (MU_STATUS_COUNT * sizeof(struct status_msg))
#define MU_BUFFER_SIZE (MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE)
#define STEX_EXTRA_SIZE max(sizeof(struct st_frame), sizeof(ST_INQ))
#define STEX_BUFFER_SIZE (MU_BUFFER_SIZE + STEX_EXTRA_SIZE)
struct st_ccb {
struct req_msg *req;
struct scsi_cmnd *cmd;
void *sense_buffer;
unsigned int sense_bufflen;
int sg_count;
u32 req_type;
u8 srb_status;
u8 scsi_status;
};
struct st_hba {
void __iomem *mmio_base; /* iomapped PCI memory space */
void *dma_mem;
dma_addr_t dma_handle;
size_t dma_size;
struct Scsi_Host *host;
struct pci_dev *pdev;
u32 req_head;
u32 req_tail;
u32 status_head;
u32 status_tail;
struct status_msg *status_buffer;
void *copy_buffer; /* temp buffer for driver-handled commands */
struct st_ccb ccb[MU_MAX_REQUEST];
struct st_ccb *wait_ccb;
wait_queue_head_t waitq;
unsigned int mu_status;
int out_req_cnt;
unsigned int cardtype;
};
static const char console_inq_page[] =
{
0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
};
MODULE_AUTHOR("Ed Lin");
MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
MODULE_LICENSE("GPL");
MODULE_VERSION(ST_DRIVER_VERSION);
static void stex_gettime(__le32 *time)
{
struct timeval tv;
do_gettimeofday(&tv);
*time = cpu_to_le32(tv.tv_sec & 0xffffffff);
*(time + 1) = cpu_to_le32((tv.tv_sec >> 16) >> 16);
}
static struct status_msg *stex_get_status(struct st_hba *hba)
{
struct status_msg *status =
hba->status_buffer + hba->status_tail;
++hba->status_tail;
hba->status_tail %= MU_STATUS_COUNT;
return status;
}
static void stex_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
{
cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
cmd->sense_buffer[0] = 0x70; /* fixed format, current */
cmd->sense_buffer[2] = sk;
cmd->sense_buffer[7] = 18 - 8; /* additional sense length */
cmd->sense_buffer[12] = asc;
cmd->sense_buffer[13] = ascq;
}
static void stex_invalid_field(struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *))
{
/* "Invalid field in cbd" */
stex_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
done(cmd);
}
static struct req_msg *stex_alloc_req(struct st_hba *hba)
{
struct req_msg *req = ((struct req_msg *)hba->dma_mem) +
hba->req_head;
++hba->req_head;
hba->req_head %= MU_REQ_COUNT;
return req;
}
static int stex_map_sg(struct st_hba *hba,
struct req_msg *req, struct st_ccb *ccb)
{
struct pci_dev *pdev = hba->pdev;
struct scsi_cmnd *cmd;
dma_addr_t dma_handle;
struct scatterlist *src;
struct st_sgtable *dst;
int i;
cmd = ccb->cmd;
dst = (struct st_sgtable *)req->variable;
dst->max_sg_count = cpu_to_le16(ST_MAX_SG);
dst->sz_in_byte = cpu_to_le32(cmd->request_bufflen);
if (cmd->use_sg) {
int n_elem;
src = (struct scatterlist *) cmd->request_buffer;
n_elem = pci_map_sg(pdev, src,
cmd->use_sg, cmd->sc_data_direction);
if (n_elem <= 0)
return -EIO;
ccb->sg_count = n_elem;
dst->sg_count = cpu_to_le16((u16)n_elem);
for (i = 0; i < n_elem; i++, src++) {
dst->table[i].count = cpu_to_le32((u32)sg_dma_len(src));
dst->table[i].addr =
cpu_to_le32(sg_dma_address(src) & 0xffffffff);
dst->table[i].addr_hi =
cpu_to_le32((sg_dma_address(src) >> 16) >> 16);
dst->table[i].ctrl = SG_CF_64B | SG_CF_HOST;
}
dst->table[--i].ctrl |= SG_CF_EOT;
return 0;
}
dma_handle = pci_map_single(pdev, cmd->request_buffer,
cmd->request_bufflen, cmd->sc_data_direction);
cmd->SCp.dma_handle = dma_handle;
ccb->sg_count = 1;
dst->sg_count = cpu_to_le16(1);
dst->table[0].addr = cpu_to_le32(dma_handle & 0xffffffff);
dst->table[0].addr_hi = cpu_to_le32((dma_handle >> 16) >> 16);
dst->table[0].count = cpu_to_le32((u32)cmd->request_bufflen);
dst->table[0].ctrl = SG_CF_EOT | SG_CF_64B | SG_CF_HOST;
return 0;
}
static void stex_internal_copy(struct scsi_cmnd *cmd,
const void *src, size_t *count, int sg_count, int direction)
{
size_t lcount;
size_t len;
void *s, *d, *base = NULL;
if (*count > cmd->request_bufflen)
*count = cmd->request_bufflen;
lcount = *count;
while (lcount) {
len = lcount;
s = (void *)src;
if (cmd->use_sg) {
size_t offset = *count - lcount;
s += offset;
base = scsi_kmap_atomic_sg(cmd->request_buffer,
sg_count, &offset, &len);
if (base == NULL) {
*count -= lcount;
return;
}
d = base + offset;
} else
d = cmd->request_buffer;
if (direction == ST_TO_CMD)
memcpy(d, s, len);
else
memcpy(s, d, len);
lcount -= len;
if (cmd->use_sg)
scsi_kunmap_atomic_sg(base);
}
}
static int stex_direct_copy(struct scsi_cmnd *cmd,
const void *src, size_t count)
{
struct st_hba *hba = (struct st_hba *) &cmd->device->host->hostdata[0];
size_t cp_len = count;
int n_elem = 0;
if (cmd->use_sg) {
n_elem = pci_map_sg(hba->pdev, cmd->request_buffer,
cmd->use_sg, cmd->sc_data_direction);
if (n_elem <= 0)
return 0;
}
stex_internal_copy(cmd, src, &cp_len, n_elem, ST_TO_CMD);
if (cmd->use_sg)
pci_unmap_sg(hba->pdev, cmd->request_buffer,
cmd->use_sg, cmd->sc_data_direction);
return cp_len == count;
}
static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
{
struct st_frame *p;
size_t count = sizeof(struct st_frame);
p = hba->copy_buffer;
stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count, ST_FROM_CMD);
memset(p->base, 0, sizeof(u32)*6);
*(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
p->rom_addr = 0;
p->drv_ver.major = ST_VER_MAJOR;
p->drv_ver.minor = ST_VER_MINOR;
p->drv_ver.oem = ST_OEM;
p->drv_ver.build = ST_BUILD_VER;
p->bus = hba->pdev->bus->number;
p->slot = hba->pdev->devfn;
p->irq_level = 0;
p->irq_vec = hba->pdev->irq;
p->id = hba->pdev->vendor << 16 | hba->pdev->device;
p->subid =
hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count, ST_TO_CMD);
}
static void
stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
{
req->tag = cpu_to_le16(tag);
req->task_attr = TASK_ATTRIBUTE_SIMPLE;
req->task_manage = 0; /* not supported yet */
hba->ccb[tag].req = req;
hba->out_req_cnt++;
writel(hba->req_head, hba->mmio_base + IMR0);
writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
readl(hba->mmio_base + IDBL); /* flush */
}
static int
stex_slave_alloc(struct scsi_device *sdev)
{
/* Cheat: usually extracted from Inquiry data */
sdev->tagged_supported = 1;
scsi_activate_tcq(sdev, sdev->host->can_queue);
return 0;
}
static int
stex_slave_config(struct scsi_device *sdev)
{
sdev->use_10_for_rw = 1;
sdev->use_10_for_ms = 1;
sdev->timeout = 60 * HZ;
sdev->tagged_supported = 1;
return 0;
}
static void
stex_slave_destroy(struct scsi_device *sdev)
{
scsi_deactivate_tcq(sdev, 1);
}
static int
stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
{
struct st_hba *hba;
struct Scsi_Host *host;
unsigned int id,lun;
struct req_msg *req;
u16 tag;
host = cmd->device->host;
id = cmd->device->id;
lun = cmd->device->channel; /* firmware lun issue work around */
hba = (struct st_hba *) &host->hostdata[0];
switch (cmd->cmnd[0]) {
case MODE_SENSE_10:
{
static char ms10_caching_page[12] =
{ 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
unsigned char page;
page = cmd->cmnd[2] & 0x3f;
if (page == 0x8 || page == 0x3f) {
stex_direct_copy(cmd, ms10_caching_page,
sizeof(ms10_caching_page));
cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
done(cmd);
} else
stex_invalid_field(cmd, done);
return 0;
}
case INQUIRY:
if (id != ST_MAX_ARRAY_SUPPORTED)
break;
if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
stex_direct_copy(cmd, console_inq_page,
sizeof(console_inq_page));
cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
done(cmd);
} else
stex_invalid_field(cmd, done);
return 0;
case PASSTHRU_CMD:
if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
struct st_drvver ver;
ver.major = ST_VER_MAJOR;
ver.minor = ST_VER_MINOR;
ver.oem = ST_OEM;
ver.build = ST_BUILD_VER;
ver.signature[0] = PASSTHRU_SIGNATURE;
ver.console_id = ST_MAX_ARRAY_SUPPORTED;
ver.host_no = hba->host->host_no;
cmd->result = stex_direct_copy(cmd, &ver, sizeof(ver)) ?
DID_OK << 16 | COMMAND_COMPLETE << 8 :
DID_ERROR << 16 | COMMAND_COMPLETE << 8;
done(cmd);
return 0;
}
default:
break;
}
cmd->scsi_done = done;
tag = cmd->request->tag;
if (unlikely(tag >= host->can_queue))
return SCSI_MLQUEUE_HOST_BUSY;
req = stex_alloc_req(hba);
if (hba->cardtype == st_yosemite) {
req->lun = lun * (ST_MAX_TARGET_NUM - 1) + id;
req->target = 0;
} else {
req->lun = lun;
req->target = id;
}
/* cdb */
memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
hba->ccb[tag].cmd = cmd;
hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
hba->ccb[tag].sense_buffer = cmd->sense_buffer;
hba->ccb[tag].req_type = 0;
if (cmd->sc_data_direction != DMA_NONE)
stex_map_sg(hba, req, &hba->ccb[tag]);
stex_send_cmd(hba, req, tag);
return 0;
}
static void stex_unmap_sg(struct st_hba *hba, struct scsi_cmnd *cmd)
{
if (cmd->sc_data_direction != DMA_NONE) {
if (cmd->use_sg)
pci_unmap_sg(hba->pdev, cmd->request_buffer,
cmd->use_sg, cmd->sc_data_direction);
else
pci_unmap_single(hba->pdev, cmd->SCp.dma_handle,
cmd->request_bufflen, cmd->sc_data_direction);
}
}
static void stex_scsi_done(struct st_ccb *ccb)
{
struct scsi_cmnd *cmd = ccb->cmd;
int result;
if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
result = ccb->scsi_status;
switch (ccb->scsi_status) {
case SAM_STAT_GOOD:
result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
break;
case SAM_STAT_CHECK_CONDITION:
result |= DRIVER_SENSE << 24;
break;
case SAM_STAT_BUSY:
result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
break;
default:
result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
break;
}
}
else if (ccb->srb_status & SRB_SEE_SENSE)
result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
else switch (ccb->srb_status) {
case SRB_STATUS_SELECTION_TIMEOUT:
result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
break;
case SRB_STATUS_BUSY:
result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
break;
case SRB_STATUS_INVALID_REQUEST:
case SRB_STATUS_ERROR:
default:
result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
break;
}
cmd->result = result;
cmd->scsi_done(cmd);
}
static void stex_copy_data(struct st_ccb *ccb,
struct status_msg *resp, unsigned int variable)
{
size_t count = variable;
if (resp->scsi_status != SAM_STAT_GOOD) {
if (ccb->sense_buffer != NULL)
memcpy(ccb->sense_buffer, resp->variable,
min(variable, ccb->sense_bufflen));
return;
}
if (ccb->cmd == NULL)
return;
stex_internal_copy(ccb->cmd,
resp->variable, &count, ccb->sg_count, ST_TO_CMD);
}
static void stex_ys_commands(struct st_hba *hba,
struct st_ccb *ccb, struct status_msg *resp)
{
size_t count;
if (ccb->cmd->cmnd[0] == MGT_CMD &&
resp->scsi_status != SAM_STAT_CHECK_CONDITION) {
ccb->cmd->request_bufflen =
le32_to_cpu(*(__le32 *)&resp->variable[0]);
return;
}
if (resp->srb_status != 0)
return;
/* determine inquiry command status by DeviceTypeQualifier */
if (ccb->cmd->cmnd[0] == INQUIRY &&
resp->scsi_status == SAM_STAT_GOOD) {
ST_INQ *inq_data;
count = STEX_EXTRA_SIZE;
stex_internal_copy(ccb->cmd, hba->copy_buffer,
&count, ccb->sg_count, ST_FROM_CMD);
inq_data = (ST_INQ *)hba->copy_buffer;
if (inq_data->DeviceTypeQualifier != 0)
ccb->srb_status = SRB_STATUS_SELECTION_TIMEOUT;
else
ccb->srb_status = SRB_STATUS_SUCCESS;
} else if (ccb->cmd->cmnd[0] == REPORT_LUNS) {
u8 *report_lun_data = (u8 *)hba->copy_buffer;
count = STEX_EXTRA_SIZE;
stex_internal_copy(ccb->cmd, report_lun_data,
&count, ccb->sg_count, ST_FROM_CMD);
if (report_lun_data[2] || report_lun_data[3]) {
report_lun_data[2] = 0x00;
report_lun_data[3] = 0x08;
stex_internal_copy(ccb->cmd, report_lun_data,
&count, ccb->sg_count, ST_TO_CMD);
}
}
}
static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
{
void __iomem *base = hba->mmio_base;
struct status_msg *resp;
struct st_ccb *ccb;
unsigned int size;
u16 tag;
if (!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED))
return;
/* status payloads */
hba->status_head = readl(base + OMR1);
if (unlikely(hba->status_head >= MU_STATUS_COUNT)) {
printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n",
pci_name(hba->pdev));
return;
}
/*
* it's not a valid status payload if:
* 1. there are no pending requests(e.g. during init stage)
* 2. there are some pending requests, but the controller is in
* reset status, and its type is not st_yosemite
* firmware of st_yosemite in reset status will return pending requests
* to driver, so we allow it to pass
*/
if (unlikely(hba->out_req_cnt <= 0 ||
(hba->mu_status == MU_STATE_RESETTING &&
hba->cardtype != st_yosemite))) {
hba->status_tail = hba->status_head;
goto update_status;
}
while (hba->status_tail != hba->status_head) {
resp = stex_get_status(hba);
tag = le16_to_cpu(resp->tag);
if (unlikely(tag >= hba->host->can_queue)) {
printk(KERN_WARNING DRV_NAME
"(%s): invalid tag\n", pci_name(hba->pdev));
continue;
}
ccb = &hba->ccb[tag];
if (hba->wait_ccb == ccb)
hba->wait_ccb = NULL;
if (unlikely(ccb->req == NULL)) {
printk(KERN_WARNING DRV_NAME
"(%s): lagging req\n", pci_name(hba->pdev));
hba->out_req_cnt--;
continue;
}
size = resp->payload_sz * sizeof(u32); /* payload size */
if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
size > sizeof(*resp))) {
printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
pci_name(hba->pdev));
} else {
size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
if (size)
stex_copy_data(ccb, resp, size);
}
ccb->srb_status = resp->srb_status;
ccb->scsi_status = resp->scsi_status;
if (likely(ccb->cmd != NULL)) {
if (hba->cardtype == st_yosemite)
stex_ys_commands(hba, ccb, resp);
if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
stex_controller_info(hba, ccb);
stex_unmap_sg(hba, ccb->cmd);
stex_scsi_done(ccb);
hba->out_req_cnt--;
} else if (ccb->req_type & PASSTHRU_REQ_TYPE) {
hba->out_req_cnt--;
if (ccb->req_type & PASSTHRU_REQ_NO_WAKEUP) {
ccb->req_type = 0;
continue;
}
ccb->req_type = 0;
if (waitqueue_active(&hba->waitq))
wake_up(&hba->waitq);
}
}
update_status:
writel(hba->status_head, base + IMR1);
readl(base + IMR1); /* flush */
}
static irqreturn_t stex_intr(int irq, void *__hba)
{
struct st_hba *hba = __hba;
void __iomem *base = hba->mmio_base;
u32 data;
unsigned long flags;
int handled = 0;
spin_lock_irqsave(hba->host->host_lock, flags);
data = readl(base + ODBL);
if (data && data != 0xffffffff) {
/* clear the interrupt */
writel(data, base + ODBL);
readl(base + ODBL); /* flush */
stex_mu_intr(hba, data);
handled = 1;
}
spin_unlock_irqrestore(hba->host->host_lock, flags);
return IRQ_RETVAL(handled);
}
static int stex_handshake(struct st_hba *hba)
{
void __iomem *base = hba->mmio_base;
struct handshake_frame *h;
dma_addr_t status_phys;
u32 data;
unsigned long before;
if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
readl(base + IDBL);
before = jiffies;
while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
printk(KERN_ERR DRV_NAME
"(%s): no handshake signature\n",
pci_name(hba->pdev));
return -1;
}
rmb();
msleep(1);
}
}
udelay(10);
data = readl(base + OMR1);
if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) {
data &= 0x0000ffff;
if (hba->host->can_queue > data)
hba->host->can_queue = data;
}
h = (struct handshake_frame *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
h->rb_phy = cpu_to_le32(hba->dma_handle);
h->rb_phy_hi = cpu_to_le32((hba->dma_handle >> 16) >> 16);
h->req_sz = cpu_to_le16(sizeof(struct req_msg));
h->req_cnt = cpu_to_le16(MU_REQ_COUNT);
h->status_sz = cpu_to_le16(sizeof(struct status_msg));
h->status_cnt = cpu_to_le16(MU_STATUS_COUNT);
stex_gettime(&h->hosttime);
h->partner_type = HMU_PARTNER_TYPE;
if (hba->dma_size > STEX_BUFFER_SIZE) {
h->extra_offset = cpu_to_le32(STEX_BUFFER_SIZE);
h->extra_size = cpu_to_le32(ST_ADDITIONAL_MEM);
} else
h->extra_offset = h->extra_size = 0;
status_phys = hba->dma_handle + MU_REQ_BUFFER_SIZE;
writel(status_phys, base + IMR0);
readl(base + IMR0);
writel((status_phys >> 16) >> 16, base + IMR1);
readl(base + IMR1);
writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
readl(base + OMR0);
writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
readl(base + IDBL); /* flush */
udelay(10);
before = jiffies;
while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {
printk(KERN_ERR DRV_NAME
"(%s): no signature after handshake frame\n",
pci_name(hba->pdev));
return -1;
}
rmb();
msleep(1);
}
writel(0, base + IMR0);
readl(base + IMR0);
writel(0, base + OMR0);
readl(base + OMR0);
writel(0, base + IMR1);
readl(base + IMR1);
writel(0, base + OMR1);
readl(base + OMR1); /* flush */
hba->mu_status = MU_STATE_STARTED;
return 0;
}
static int stex_abort(struct scsi_cmnd *cmd)
{
struct Scsi_Host *host = cmd->device->host;
struct st_hba *hba = (struct st_hba *)host->hostdata;
u16 tag = cmd->request->tag;
void __iomem *base;
u32 data;
int result = SUCCESS;
unsigned long flags;
base = hba->mmio_base;
spin_lock_irqsave(host->host_lock, flags);
if (tag < host->can_queue && hba->ccb[tag].cmd == cmd)
hba->wait_ccb = &hba->ccb[tag];
else {
for (tag = 0; tag < host->can_queue; tag++)
if (hba->ccb[tag].cmd == cmd) {
hba->wait_ccb = &hba->ccb[tag];
break;
}
if (tag >= host->can_queue)
goto out;
}
data = readl(base + ODBL);
if (data == 0 || data == 0xffffffff)
goto fail_out;
writel(data, base + ODBL);
readl(base + ODBL); /* flush */
stex_mu_intr(hba, data);
if (hba->wait_ccb == NULL) {
printk(KERN_WARNING DRV_NAME
"(%s): lost interrupt\n", pci_name(hba->pdev));
goto out;
}
fail_out:
stex_unmap_sg(hba, cmd);
hba->wait_ccb->req = NULL; /* nullify the req's future return */
hba->wait_ccb = NULL;
result = FAILED;
out:
spin_unlock_irqrestore(host->host_lock, flags);
return result;
}
static void stex_hard_reset(struct st_hba *hba)
{
struct pci_bus *bus;
int i;
u16 pci_cmd;
u8 pci_bctl;
for (i = 0; i < 16; i++)
pci_read_config_dword(hba->pdev, i * 4,
&hba->pdev->saved_config_space[i]);
/* Reset secondary bus. Our controller(MU/ATU) is the only device on
secondary bus. Consult Intel 80331/3 developer's manual for detail */
bus = hba->pdev->bus;
pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
msleep(1);
pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
for (i = 0; i < MU_HARD_RESET_WAIT; i++) {
pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
if (pci_cmd != 0xffff && (pci_cmd & PCI_COMMAND_MASTER))
break;
msleep(1);
}
ssleep(5);
for (i = 0; i < 16; i++)
pci_write_config_dword(hba->pdev, i * 4,
hba->pdev->saved_config_space[i]);
}
static int stex_reset(struct scsi_cmnd *cmd)
{
struct st_hba *hba;
unsigned long flags;
unsigned long before;
hba = (struct st_hba *) &cmd->device->host->hostdata[0];
hba->mu_status = MU_STATE_RESETTING;
if (hba->cardtype == st_shasta)
stex_hard_reset(hba);
if (hba->cardtype != st_yosemite) {
if (stex_handshake(hba)) {
printk(KERN_WARNING DRV_NAME
"(%s): resetting: handshake failed\n",
pci_name(hba->pdev));
return FAILED;
}
spin_lock_irqsave(hba->host->host_lock, flags);
hba->req_head = 0;
hba->req_tail = 0;
hba->status_head = 0;
hba->status_tail = 0;
hba->out_req_cnt = 0;
spin_unlock_irqrestore(hba->host->host_lock, flags);
return SUCCESS;
}
/* st_yosemite */
writel(MU_INBOUND_DOORBELL_RESET, hba->mmio_base + IDBL);
readl(hba->mmio_base + IDBL); /* flush */
before = jiffies;
while (hba->out_req_cnt > 0) {
if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
printk(KERN_WARNING DRV_NAME
"(%s): reset timeout\n", pci_name(hba->pdev));
return FAILED;
}
msleep(1);
}
hba->mu_status = MU_STATE_STARTED;
return SUCCESS;
}
static int stex_biosparam(struct scsi_device *sdev,
struct block_device *bdev, sector_t capacity, int geom[])
{
int heads = 255, sectors = 63;
if (capacity < 0x200000) {
heads = 64;
sectors = 32;
}
sector_div(capacity, heads * sectors);
geom[0] = heads;
geom[1] = sectors;
geom[2] = capacity;
return 0;
}
static struct scsi_host_template driver_template = {
.module = THIS_MODULE,
.name = DRV_NAME,
.proc_name = DRV_NAME,
.bios_param = stex_biosparam,
.queuecommand = stex_queuecommand,
.slave_alloc = stex_slave_alloc,
.slave_configure = stex_slave_config,
.slave_destroy = stex_slave_destroy,
.eh_abort_handler = stex_abort,
.eh_host_reset_handler = stex_reset,
.can_queue = ST_CAN_QUEUE,
.this_id = -1,
.sg_tablesize = ST_MAX_SG,
.cmd_per_lun = ST_CMD_PER_LUN,
};
static int stex_set_dma_mask(struct pci_dev * pdev)
{
int ret;
if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)
&& !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
return 0;
ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
if (!ret)
ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
return ret;
}
static int __devinit
stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct st_hba *hba;
struct Scsi_Host *host;
int err;
err = pci_enable_device(pdev);
if (err)
return err;
pci_set_master(pdev);
host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
if (!host) {
printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
pci_name(pdev));
err = -ENOMEM;
goto out_disable;
}
hba = (struct st_hba *)host->hostdata;
memset(hba, 0, sizeof(struct st_hba));
err = pci_request_regions(pdev, DRV_NAME);
if (err < 0) {
printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
pci_name(pdev));
goto out_scsi_host_put;
}
hba->mmio_base = ioremap(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
if ( !hba->mmio_base) {
printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
pci_name(pdev));
err = -ENOMEM;
goto out_release_regions;
}
err = stex_set_dma_mask(pdev);
if (err) {
printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
pci_name(pdev));
goto out_iounmap;
}
hba->cardtype = (unsigned int) id->driver_data;
if (hba->cardtype == st_vsc && (pdev->subsystem_device & 0xf) == 0x1)
hba->cardtype = st_vsc1;
hba->dma_size = (hba->cardtype == st_vsc1) ?
(STEX_BUFFER_SIZE + ST_ADDITIONAL_MEM) : (STEX_BUFFER_SIZE);
hba->dma_mem = dma_alloc_coherent(&pdev->dev,
hba->dma_size, &hba->dma_handle, GFP_KERNEL);
if (!hba->dma_mem) {
err = -ENOMEM;
printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
pci_name(pdev));
goto out_iounmap;
}
hba->status_buffer =
(struct status_msg *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
hba->copy_buffer = hba->dma_mem + MU_BUFFER_SIZE;
hba->mu_status = MU_STATE_STARTING;
/* firmware uses id/lun pair for a logical drive, but lun would be
always 0 if CONFIG_SCSI_MULTI_LUN not configured, so we use
channel to map lun here */
host->max_channel = ST_MAX_LUN_PER_TARGET - 1;
host->max_id = ST_MAX_TARGET_NUM;
host->max_lun = 1;
host->unique_id = host->host_no;
host->max_cmd_len = STEX_CDB_LENGTH;
hba->host = host;
hba->pdev = pdev;
init_waitqueue_head(&hba->waitq);
err = request_irq(pdev->irq, stex_intr, IRQF_SHARED, DRV_NAME, hba);
if (err) {
printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
pci_name(pdev));
goto out_pci_free;
}
err = stex_handshake(hba);
if (err)
goto out_free_irq;
err = scsi_init_shared_tag_map(host, host->can_queue);
if (err) {
printk(KERN_ERR DRV_NAME "(%s): init shared queue failed\n",
pci_name(pdev));
goto out_free_irq;
}
pci_set_drvdata(pdev, hba);
err = scsi_add_host(host, &pdev->dev);
if (err) {
printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
pci_name(pdev));
goto out_free_irq;
}
scsi_scan_host(host);
return 0;
out_free_irq:
free_irq(pdev->irq, hba);
out_pci_free:
dma_free_coherent(&pdev->dev, hba->dma_size,
hba->dma_mem, hba->dma_handle);
out_iounmap:
iounmap(hba->mmio_base);
out_release_regions:
pci_release_regions(pdev);
out_scsi_host_put:
scsi_host_put(host);
out_disable:
pci_disable_device(pdev);
return err;
}
static void stex_hba_stop(struct st_hba *hba)
{
struct req_msg *req;
unsigned long flags;
unsigned long before;
u16 tag = 0;
spin_lock_irqsave(hba->host->host_lock, flags);
req = stex_alloc_req(hba);
memset(req->cdb, 0, STEX_CDB_LENGTH);
if (hba->cardtype == st_yosemite) {
req->cdb[0] = MGT_CMD;
req->cdb[1] = MGT_CMD_SIGNATURE;
req->cdb[2] = CTLR_CONFIG_CMD;
req->cdb[3] = CTLR_SHUTDOWN;
} else {
req->cdb[0] = CONTROLLER_CMD;
req->cdb[1] = CTLR_POWER_STATE_CHANGE;
req->cdb[2] = CTLR_POWER_SAVING;
}
hba->ccb[tag].cmd = NULL;
hba->ccb[tag].sg_count = 0;
hba->ccb[tag].sense_bufflen = 0;
hba->ccb[tag].sense_buffer = NULL;
hba->ccb[tag].req_type |= PASSTHRU_REQ_TYPE;
stex_send_cmd(hba, req, tag);
spin_unlock_irqrestore(hba->host->host_lock, flags);
before = jiffies;
while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ))
return;
msleep(10);
}
}
static void stex_hba_free(struct st_hba *hba)
{
free_irq(hba->pdev->irq, hba);
iounmap(hba->mmio_base);
pci_release_regions(hba->pdev);
dma_free_coherent(&hba->pdev->dev, hba->dma_size,
hba->dma_mem, hba->dma_handle);
}
static void stex_remove(struct pci_dev *pdev)
{
struct st_hba *hba = pci_get_drvdata(pdev);
scsi_remove_host(hba->host);
pci_set_drvdata(pdev, NULL);
stex_hba_stop(hba);
stex_hba_free(hba);
scsi_host_put(hba->host);
pci_disable_device(pdev);
}
static void stex_shutdown(struct pci_dev *pdev)
{
struct st_hba *hba = pci_get_drvdata(pdev);
stex_hba_stop(hba);
}
static struct pci_device_id stex_pci_tbl[] = {
/* st_shasta */
{ 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */
{ 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
st_shasta }, /* SuperTrak EX12350 */
{ 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
st_shasta }, /* SuperTrak EX4350 */
{ 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
st_shasta }, /* SuperTrak EX24350 */
/* st_vsc */
{ 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
/* st_yosemite */
{ 0x105a, 0x8650, PCI_ANY_ID, 0x4600, 0, 0,
st_yosemite }, /* SuperTrak EX4650 */
{ 0x105a, 0x8650, PCI_ANY_ID, 0x4610, 0, 0,
st_yosemite }, /* SuperTrak EX4650o */
{ 0x105a, 0x8650, PCI_ANY_ID, 0x8600, 0, 0,
st_yosemite }, /* SuperTrak EX8650EL */
{ 0x105a, 0x8650, PCI_ANY_ID, 0x8601, 0, 0,
st_yosemite }, /* SuperTrak EX8650 */
{ 0x105a, 0x8650, PCI_ANY_ID, 0x8602, 0, 0,
st_yosemite }, /* SuperTrak EX8654 */
{ 0x105a, 0x8650, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
st_yosemite }, /* generic st_yosemite */
{ } /* terminate list */
};
MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
static struct pci_driver stex_pci_driver = {
.name = DRV_NAME,
.id_table = stex_pci_tbl,
.probe = stex_probe,
.remove = __devexit_p(stex_remove),
.shutdown = stex_shutdown,
};
static int __init stex_init(void)
{
printk(KERN_INFO DRV_NAME
": Promise SuperTrak EX Driver version: %s\n",
ST_DRIVER_VERSION);
return pci_register_driver(&stex_pci_driver);
}
static void __exit stex_exit(void)
{
pci_unregister_driver(&stex_pci_driver);
}
module_init(stex_init);
module_exit(stex_exit);
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