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u-boot/common/scsi.c
Michal Simek f8f41ae668 scsi: dm: Unbind all scsi based block devices before new scan 
New scan should unbind all block devices not to be listed again.
Without this patch if scsi reset or scan is called new block devices are
created which point to the same id and lun.

For example:
ZynqMP> scsi scan
scsi_scan: if_type=2, devnum=0: sdhci@ff170000.blk, 6, 0
scsi_scan: if_type=2, devnum=0: ahci@fd0c0000.id1lun0, 2, 0
scsi_scan: if_type=2, devnum=0: ahci@fd0c0000.id1lun0, 2, 1
scsi_scan: if_type=2, devnum=0: ahci@fd0c0000.id1lun0, 2, 2
scsi_scan: if_type=2, devnum=0: ahci@fd0c0000.id1lun0, 2, 3
scsi_scan: if_type=2, devnum=0: ahci@fd0c0000.id1lun0, 2, 4
scanning bus for devices...
  Device 0: (1:0) Vendor: ATA Prod.: KINGSTON SVP200S Rev: 501A
            Type: Hard Disk
            Capacity: 57241.8 MB = 55.9 GB (117231408 x 512)

Reported-by: Ken Ma <make@marvell.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Simon Glass <sjg@chromium.org>
2017-01-09 11:25:20 -07:00

676 lines
17 KiB
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/*
* (C) Copyright 2001
* Denis Peter, MPL AG Switzerland
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <inttypes.h>
#include <pci.h>
#include <scsi.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
#if !defined(CONFIG_DM_SCSI)
#ifdef CONFIG_SCSI_DEV_LIST
#define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
#else
#ifdef CONFIG_SCSI_SYM53C8XX
#define SCSI_VEND_ID 0x1000
#ifndef CONFIG_SCSI_DEV_ID
#define SCSI_DEV_ID 0x0001
#else
#define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
#endif
#elif defined CONFIG_SATA_ULI5288
#define SCSI_VEND_ID 0x10b9
#define SCSI_DEV_ID 0x5288
#elif !defined(CONFIG_SCSI_AHCI_PLAT)
#error no scsi device defined
#endif
#define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
#endif
#endif
#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
#endif
static ccb tempccb; /* temporary scsi command buffer */
static unsigned char tempbuff[512]; /* temporary data buffer */
#if !defined(CONFIG_DM_SCSI)
static int scsi_max_devs; /* number of highest available scsi device */
static int scsi_curr_dev; /* current device */
static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
#endif
/* almost the maximum amount of the scsi_ext command.. */
#define SCSI_MAX_READ_BLK 0xFFFF
#define SCSI_LBA48_READ 0xFFFFFFF
#ifdef CONFIG_SYS_64BIT_LBA
void scsi_setup_read16(ccb *pccb, lbaint_t start, unsigned long blocks)
{
pccb->cmd[0] = SCSI_READ16;
pccb->cmd[1] = pccb->lun << 5;
pccb->cmd[2] = (unsigned char)(start >> 56) & 0xff;
pccb->cmd[3] = (unsigned char)(start >> 48) & 0xff;
pccb->cmd[4] = (unsigned char)(start >> 40) & 0xff;
pccb->cmd[5] = (unsigned char)(start >> 32) & 0xff;
pccb->cmd[6] = (unsigned char)(start >> 24) & 0xff;
pccb->cmd[7] = (unsigned char)(start >> 16) & 0xff;
pccb->cmd[8] = (unsigned char)(start >> 8) & 0xff;
pccb->cmd[9] = (unsigned char)start & 0xff;
pccb->cmd[10] = 0;
pccb->cmd[11] = (unsigned char)(blocks >> 24) & 0xff;
pccb->cmd[12] = (unsigned char)(blocks >> 16) & 0xff;
pccb->cmd[13] = (unsigned char)(blocks >> 8) & 0xff;
pccb->cmd[14] = (unsigned char)blocks & 0xff;
pccb->cmd[15] = 0;
pccb->cmdlen = 16;
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
debug("scsi_setup_read16: cmd: %02X %02X startblk %02X%02X%02X%02X%02X%02X%02X%02X blccnt %02X%02X%02X%02X\n",
pccb->cmd[0], pccb->cmd[1],
pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
pccb->cmd[6], pccb->cmd[7], pccb->cmd[8], pccb->cmd[9],
pccb->cmd[11], pccb->cmd[12], pccb->cmd[13], pccb->cmd[14]);
}
#endif
static void scsi_setup_read_ext(ccb *pccb, lbaint_t start,
unsigned short blocks)
{
pccb->cmd[0] = SCSI_READ10;
pccb->cmd[1] = pccb->lun << 5;
pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
pccb->cmd[5] = (unsigned char)start & 0xff;
pccb->cmd[6] = 0;
pccb->cmd[7] = (unsigned char)(blocks >> 8) & 0xff;
pccb->cmd[8] = (unsigned char)blocks & 0xff;
pccb->cmd[6] = 0;
pccb->cmdlen = 10;
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
debug("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
pccb->cmd[0], pccb->cmd[1],
pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
pccb->cmd[7], pccb->cmd[8]);
}
static void scsi_setup_write_ext(ccb *pccb, lbaint_t start,
unsigned short blocks)
{
pccb->cmd[0] = SCSI_WRITE10;
pccb->cmd[1] = pccb->lun << 5;
pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
pccb->cmd[5] = (unsigned char)start & 0xff;
pccb->cmd[6] = 0;
pccb->cmd[7] = ((unsigned char)(blocks >> 8)) & 0xff;
pccb->cmd[8] = (unsigned char)blocks & 0xff;
pccb->cmd[9] = 0;
pccb->cmdlen = 10;
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
__func__,
pccb->cmd[0], pccb->cmd[1],
pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
pccb->cmd[7], pccb->cmd[8]);
}
static void scsi_setup_inquiry(ccb *pccb)
{
pccb->cmd[0] = SCSI_INQUIRY;
pccb->cmd[1] = pccb->lun << 5;
pccb->cmd[2] = 0;
pccb->cmd[3] = 0;
if (pccb->datalen > 255)
pccb->cmd[4] = 255;
else
pccb->cmd[4] = (unsigned char)pccb->datalen;
pccb->cmd[5] = 0;
pccb->cmdlen = 6;
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
}
#ifdef CONFIG_BLK
static ulong scsi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
void *buffer)
#else
static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
lbaint_t blkcnt, void *buffer)
#endif
{
#ifdef CONFIG_BLK
struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
#endif
lbaint_t start, blks;
uintptr_t buf_addr;
unsigned short smallblks = 0;
ccb *pccb = (ccb *)&tempccb;
/* Setup device */
pccb->target = block_dev->target;
pccb->lun = block_dev->lun;
buf_addr = (unsigned long)buffer;
start = blknr;
blks = blkcnt;
debug("\nscsi_read: dev %d startblk " LBAF
", blccnt " LBAF " buffer %lx\n",
block_dev->devnum, start, blks, (unsigned long)buffer);
do {
pccb->pdata = (unsigned char *)buf_addr;
#ifdef CONFIG_SYS_64BIT_LBA
if (start > SCSI_LBA48_READ) {
unsigned long blocks;
blocks = min_t(lbaint_t, blks, SCSI_MAX_READ_BLK);
pccb->datalen = block_dev->blksz * blocks;
scsi_setup_read16(pccb, start, blocks);
start += blocks;
blks -= blocks;
} else
#endif
if (blks > SCSI_MAX_READ_BLK) {
pccb->datalen = block_dev->blksz *
SCSI_MAX_READ_BLK;
smallblks = SCSI_MAX_READ_BLK;
scsi_setup_read_ext(pccb, start, smallblks);
start += SCSI_MAX_READ_BLK;
blks -= SCSI_MAX_READ_BLK;
} else {
pccb->datalen = block_dev->blksz * blks;
smallblks = (unsigned short)blks;
scsi_setup_read_ext(pccb, start, smallblks);
start += blks;
blks = 0;
}
debug("scsi_read_ext: startblk " LBAF
", blccnt %x buffer %" PRIXPTR "\n",
start, smallblks, buf_addr);
if (scsi_exec(pccb) != true) {
scsi_print_error(pccb);
blkcnt -= blks;
break;
}
buf_addr += pccb->datalen;
} while (blks != 0);
debug("scsi_read_ext: end startblk " LBAF
", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr);
return blkcnt;
}
/*******************************************************************************
* scsi_write
*/
/* Almost the maximum amount of the scsi_ext command.. */
#define SCSI_MAX_WRITE_BLK 0xFFFF
#ifdef CONFIG_BLK
static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
const void *buffer)
#else
static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
lbaint_t blkcnt, const void *buffer)
#endif
{
#ifdef CONFIG_BLK
struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
#endif
lbaint_t start, blks;
uintptr_t buf_addr;
unsigned short smallblks;
ccb *pccb = (ccb *)&tempccb;
/* Setup device */
pccb->target = block_dev->target;
pccb->lun = block_dev->lun;
buf_addr = (unsigned long)buffer;
start = blknr;
blks = blkcnt;
debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
__func__, block_dev->devnum, start, blks, (unsigned long)buffer);
do {
pccb->pdata = (unsigned char *)buf_addr;
if (blks > SCSI_MAX_WRITE_BLK) {
pccb->datalen = (block_dev->blksz *
SCSI_MAX_WRITE_BLK);
smallblks = SCSI_MAX_WRITE_BLK;
scsi_setup_write_ext(pccb, start, smallblks);
start += SCSI_MAX_WRITE_BLK;
blks -= SCSI_MAX_WRITE_BLK;
} else {
pccb->datalen = block_dev->blksz * blks;
smallblks = (unsigned short)blks;
scsi_setup_write_ext(pccb, start, smallblks);
start += blks;
blks = 0;
}
debug("%s: startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
__func__, start, smallblks, buf_addr);
if (scsi_exec(pccb) != true) {
scsi_print_error(pccb);
blkcnt -= blks;
break;
}
buf_addr += pccb->datalen;
} while (blks != 0);
debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
__func__, start, smallblks, buf_addr);
return blkcnt;
}
#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
void scsi_init(void)
{
int busdevfunc = -1;
int i;
/*
* Find a device from the list, this driver will support a single
* controller.
*/
for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
/* get PCI Device ID */
#ifdef CONFIG_DM_PCI
struct udevice *dev;
int ret;
ret = dm_pci_find_device(scsi_device_list[i].vendor,
scsi_device_list[i].device, 0, &dev);
if (!ret) {
busdevfunc = dm_pci_get_bdf(dev);
break;
}
#else
busdevfunc = pci_find_device(scsi_device_list[i].vendor,
scsi_device_list[i].device,
0);
#endif
if (busdevfunc != -1)
break;
}
if (busdevfunc == -1) {
printf("Error: SCSI Controller(s) ");
for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
printf("%04X:%04X ",
scsi_device_list[i].vendor,
scsi_device_list[i].device);
}
printf("not found\n");
return;
}
#ifdef DEBUG
else {
printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
scsi_device_list[i].vendor,
scsi_device_list[i].device,
(busdevfunc >> 16) & 0xFF,
(busdevfunc >> 11) & 0x1F,
(busdevfunc >> 8) & 0x7);
}
#endif
bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
scsi_low_level_init(busdevfunc);
scsi_scan(1);
bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
}
#endif
/* copy src to dest, skipping leading and trailing blanks
* and null terminate the string
*/
static void scsi_ident_cpy(unsigned char *dest, unsigned char *src,
unsigned int len)
{
int start, end;
start = 0;
while (start < len) {
if (src[start] != ' ')
break;
start++;
}
end = len-1;
while (end > start) {
if (src[end] != ' ')
break;
end--;
}
for (; start <= end; start++)
*dest ++= src[start];
*dest = '\0';
}
static int scsi_read_capacity(ccb *pccb, lbaint_t *capacity,
unsigned long *blksz)
{
*capacity = 0;
memset(pccb->cmd, '\0', sizeof(pccb->cmd));
pccb->cmd[0] = SCSI_RD_CAPAC10;
pccb->cmd[1] = pccb->lun << 5;
pccb->cmdlen = 10;
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
pccb->datalen = 8;
if (scsi_exec(pccb) != true)
return 1;
*capacity = ((lbaint_t)pccb->pdata[0] << 24) |
((lbaint_t)pccb->pdata[1] << 16) |
((lbaint_t)pccb->pdata[2] << 8) |
((lbaint_t)pccb->pdata[3]);
if (*capacity != 0xffffffff) {
/* Read capacity (10) was sufficient for this drive. */
*blksz = ((unsigned long)pccb->pdata[4] << 24) |
((unsigned long)pccb->pdata[5] << 16) |
((unsigned long)pccb->pdata[6] << 8) |
((unsigned long)pccb->pdata[7]);
return 0;
}
/* Read capacity (10) was insufficient. Use read capacity (16). */
memset(pccb->cmd, '\0', sizeof(pccb->cmd));
pccb->cmd[0] = SCSI_RD_CAPAC16;
pccb->cmd[1] = 0x10;
pccb->cmdlen = 16;
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
pccb->datalen = 16;
if (scsi_exec(pccb) != true)
return 1;
*capacity = ((uint64_t)pccb->pdata[0] << 56) |
((uint64_t)pccb->pdata[1] << 48) |
((uint64_t)pccb->pdata[2] << 40) |
((uint64_t)pccb->pdata[3] << 32) |
((uint64_t)pccb->pdata[4] << 24) |
((uint64_t)pccb->pdata[5] << 16) |
((uint64_t)pccb->pdata[6] << 8) |
((uint64_t)pccb->pdata[7]);
*blksz = ((uint64_t)pccb->pdata[8] << 56) |
((uint64_t)pccb->pdata[9] << 48) |
((uint64_t)pccb->pdata[10] << 40) |
((uint64_t)pccb->pdata[11] << 32) |
((uint64_t)pccb->pdata[12] << 24) |
((uint64_t)pccb->pdata[13] << 16) |
((uint64_t)pccb->pdata[14] << 8) |
((uint64_t)pccb->pdata[15]);
return 0;
}
/*
* Some setup (fill-in) routines
*/
static void scsi_setup_test_unit_ready(ccb *pccb)
{
pccb->cmd[0] = SCSI_TST_U_RDY;
pccb->cmd[1] = pccb->lun << 5;
pccb->cmd[2] = 0;
pccb->cmd[3] = 0;
pccb->cmd[4] = 0;
pccb->cmd[5] = 0;
pccb->cmdlen = 6;
pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
}
/**
* scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties
*
* @dev_desc: Block device description pointer
*/
static void scsi_init_dev_desc_priv(struct blk_desc *dev_desc)
{
dev_desc->target = 0xff;
dev_desc->lun = 0xff;
dev_desc->log2blksz =
LOG2_INVALID(typeof(dev_desc->log2blksz));
dev_desc->type = DEV_TYPE_UNKNOWN;
dev_desc->vendor[0] = 0;
dev_desc->product[0] = 0;
dev_desc->revision[0] = 0;
dev_desc->removable = false;
#ifndef CONFIG_BLK
dev_desc->block_read = scsi_read;
dev_desc->block_write = scsi_write;
#endif
}
#if !defined(CONFIG_DM_SCSI)
/**
* scsi_init_dev_desc - initialize all SCSI specific blk_desc properties
*
* @dev_desc: Block device description pointer
* @devnum: Device number
*/
static void scsi_init_dev_desc(struct blk_desc *dev_desc, int devnum)
{
dev_desc->lba = 0;
dev_desc->blksz = 0;
dev_desc->if_type = IF_TYPE_SCSI;
dev_desc->devnum = devnum;
dev_desc->part_type = PART_TYPE_UNKNOWN;
scsi_init_dev_desc_priv(dev_desc);
}
#endif
/**
* scsi_detect_dev - Detect scsi device
*
* @target: target id
* @dev_desc: block device description
*
* The scsi_detect_dev detects and fills a dev_desc structure when the device is
* detected. The LUN number is taken from the struct blk_desc *dev_desc.
*
* Return: 0 on success, error value otherwise
*/
static int scsi_detect_dev(int target, struct blk_desc *dev_desc)
{
unsigned char perq, modi;
lbaint_t capacity;
unsigned long blksz;
ccb *pccb = (ccb *)&tempccb;
pccb->target = target;
pccb->lun = dev_desc->lun;
pccb->pdata = (unsigned char *)&tempbuff;
pccb->datalen = 512;
scsi_setup_inquiry(pccb);
if (scsi_exec(pccb) != true) {
if (pccb->contr_stat == SCSI_SEL_TIME_OUT) {
/*
* selection timeout => assuming no
* device present
*/
debug("Selection timeout ID %d\n",
pccb->target);
return -ETIMEDOUT;
}
scsi_print_error(pccb);
return -ENODEV;
}
perq = tempbuff[0];
modi = tempbuff[1];
if ((perq & 0x1f) == 0x1f)
return -ENODEV; /* skip unknown devices */
if ((modi & 0x80) == 0x80) /* drive is removable */
dev_desc->removable = true;
/* get info for this device */
scsi_ident_cpy((unsigned char *)dev_desc->vendor,
&tempbuff[8], 8);
scsi_ident_cpy((unsigned char *)dev_desc->product,
&tempbuff[16], 16);
scsi_ident_cpy((unsigned char *)dev_desc->revision,
&tempbuff[32], 4);
dev_desc->target = pccb->target;
dev_desc->lun = pccb->lun;
pccb->datalen = 0;
scsi_setup_test_unit_ready(pccb);
if (scsi_exec(pccb) != true) {
if (dev_desc->removable) {
dev_desc->type = perq;
goto removable;
}
scsi_print_error(pccb);
return -EINVAL;
}
if (scsi_read_capacity(pccb, &capacity, &blksz)) {
scsi_print_error(pccb);
return -EINVAL;
}
dev_desc->lba = capacity;
dev_desc->blksz = blksz;
dev_desc->log2blksz = LOG2(dev_desc->blksz);
dev_desc->type = perq;
part_init(&dev_desc[0]);
removable:
return 0;
}
/*
* (re)-scan the scsi bus and reports scsi device info
* to the user if mode = 1
*/
#if defined(CONFIG_DM_SCSI)
int scsi_scan(int mode)
{
unsigned char i, lun;
struct uclass *uc;
struct udevice *dev; /* SCSI controller */
int ret;
if (mode == 1)
printf("scanning bus for devices...\n");
blk_unbind_all(IF_TYPE_SCSI);
ret = uclass_get(UCLASS_SCSI, &uc);
if (ret)
return ret;
uclass_foreach_dev(dev, uc) {
struct scsi_platdata *plat; /* scsi controller platdata */
/* probe SCSI controller driver */
ret = device_probe(dev);
if (ret)
return ret;
/* Get controller platdata */
plat = dev_get_platdata(dev);
for (i = 0; i < plat->max_id; i++) {
for (lun = 0; lun < plat->max_lun; lun++) {
struct udevice *bdev; /* block device */
/* block device description */
struct blk_desc *bdesc;
char str[10];
/*
* Create only one block device and do detection
* to make sure that there won't be a lot of
* block devices created
*/
snprintf(str, sizeof(str), "id%dlun%d", i, lun);
ret = blk_create_devicef(dev, "scsi_blk",
str, IF_TYPE_SCSI,
-1, 0, 0, &bdev);
if (ret) {
debug("Can't create device\n");
return ret;
}
bdesc = dev_get_uclass_platdata(bdev);
scsi_init_dev_desc_priv(bdesc);
bdesc->lun = lun;
ret = scsi_detect_dev(i, bdesc);
if (ret) {
device_unbind(bdev);
continue;
}
if (mode == 1) {
printf(" Device %d: ", 0);
dev_print(bdesc);
} /* if mode */
} /* next LUN */
}
}
return 0;
}
#else
int scsi_scan(int mode)
{
unsigned char i, lun;
int ret;
if (mode == 1)
printf("scanning bus for devices...\n");
for (i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++)
scsi_init_dev_desc(&scsi_dev_desc[i], i);
scsi_max_devs = 0;
for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) {
scsi_dev_desc[scsi_max_devs].lun = lun;
ret = scsi_detect_dev(i, &scsi_dev_desc[scsi_max_devs]);
if (ret)
continue;
if (mode == 1) {
printf(" Device %d: ", 0);
dev_print(&scsi_dev_desc[scsi_max_devs]);
} /* if mode */
scsi_max_devs++;
} /* next LUN */
}
if (scsi_max_devs > 0)
scsi_curr_dev = 0;
else
scsi_curr_dev = -1;
printf("Found %d device(s).\n", scsi_max_devs);
#ifndef CONFIG_SPL_BUILD
setenv_ulong("scsidevs", scsi_max_devs);
#endif
return 0;
}
#endif
#ifdef CONFIG_BLK
static const struct blk_ops scsi_blk_ops = {
.read = scsi_read,
.write = scsi_write,
};
U_BOOT_DRIVER(scsi_blk) = {
.name = "scsi_blk",
.id = UCLASS_BLK,
.ops = &scsi_blk_ops,
};
#else
U_BOOT_LEGACY_BLK(scsi) = {
.if_typename = "scsi",
.if_type = IF_TYPE_SCSI,
.max_devs = CONFIG_SYS_SCSI_MAX_DEVICE,
.desc = scsi_dev_desc,
};
#endif
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