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u-boot/drivers/scsi/scsi.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

708 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2001
* Denis Peter, MPL AG Switzerland
*/
#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_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) && \
!defined(CONFIG_DM_SCSI)
const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
#endif
static struct scsi_cmd 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
static void scsi_print_error(struct scsi_cmd *pccb)
{
/* Dummy function that could print an error for debugging */
}
#ifdef CONFIG_SYS_64BIT_LBA
void scsi_setup_read16(struct scsi_cmd *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(struct scsi_cmd *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(struct scsi_cmd *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(struct scsi_cmd *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);
struct udevice *bdev = dev->parent;
#else
struct udevice *bdev = NULL;
#endif
lbaint_t start, blks;
uintptr_t buf_addr;
unsigned short smallblks = 0;
struct scsi_cmd *pccb = (struct scsi_cmd *)&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(bdev, pccb)) {
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);
struct udevice *bdev = dev->parent;
#else
struct udevice *bdev = NULL;
#endif
lbaint_t start, blks;
uintptr_t buf_addr;
unsigned short smallblks;
struct scsi_cmd *pccb = (struct scsi_cmd *)&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(bdev, pccb)) {
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) && \
!defined(CONFIG_DM_SCSI)
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(true);
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(struct udevice *dev, struct scsi_cmd *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(dev, pccb))
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(dev, pccb))
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(struct scsi_cmd *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;
#if !CONFIG_IS_ENABLED(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
* @lun: target lun
* @dev_desc: block device description
*
* The scsi_detect_dev detects and fills a dev_desc structure when the device is
* detected.
*
* Return: 0 on success, error value otherwise
*/
static int scsi_detect_dev(struct udevice *dev, int target, int lun,
struct blk_desc *dev_desc)
{
unsigned char perq, modi;
lbaint_t capacity;
unsigned long blksz;
struct scsi_cmd *pccb = (struct scsi_cmd *)&tempccb;
pccb->target = target;
pccb->lun = lun;
pccb->pdata = (unsigned char *)&tempbuff;
pccb->datalen = 512;
scsi_setup_inquiry(pccb);
if (scsi_exec(dev, pccb)) {
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(dev, pccb)) {
if (dev_desc->removable) {
dev_desc->type = perq;
goto removable;
}
scsi_print_error(pccb);
return -EINVAL;
}
if (scsi_read_capacity(dev, 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;
removable:
return 0;
}
/*
* (re)-scan the scsi bus and reports scsi device info
* to the user if mode = 1
*/
#if defined(CONFIG_DM_SCSI)
static int do_scsi_scan_one(struct udevice *dev, int id, int lun, bool verbose)
{
int ret;
struct udevice *bdev;
struct blk_desc bd;
struct blk_desc *bdesc;
char str[10];
/*
* detect the scsi driver to get information about its geometry (block
* size, number of blocks) and other parameters (ids, type, ...)
*/
scsi_init_dev_desc_priv(&bd);
if (scsi_detect_dev(dev, id, lun, &bd))
return -ENODEV;
/*
* 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", id, lun);
ret = blk_create_devicef(dev, "scsi_blk", str, IF_TYPE_SCSI, -1,
bd.blksz, bd.lba, &bdev);
if (ret) {
debug("Can't create device\n");
return ret;
}
bdesc = dev_get_uclass_platdata(bdev);
bdesc->target = id;
bdesc->lun = lun;
bdesc->removable = bd.removable;
bdesc->type = bd.type;
memcpy(&bdesc->vendor, &bd.vendor, sizeof(bd.vendor));
memcpy(&bdesc->product, &bd.product, sizeof(bd.product));
memcpy(&bdesc->revision, &bd.revision, sizeof(bd.revision));
part_init(bdesc);
if (verbose) {
printf(" Device %d: ", 0);
dev_print(bdesc);
}
return 0;
}
int scsi_scan_dev(struct udevice *dev, bool verbose)
{
struct scsi_platdata *uc_plat; /* scsi controller platdata */
int ret;
int i;
int lun;
/* probe SCSI controller driver */
ret = device_probe(dev);
if (ret)
return ret;
/* Get controller platdata */
uc_plat = dev_get_uclass_platdata(dev);
for (i = 0; i < uc_plat->max_id; i++)
for (lun = 0; lun < uc_plat->max_lun; lun++)
do_scsi_scan_one(dev, i, lun, verbose);
return 0;
}
int scsi_scan(bool verbose)
{
struct uclass *uc;
struct udevice *dev; /* SCSI controller */
int ret;
if (verbose)
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) {
ret = scsi_scan_dev(dev, verbose);
if (ret)
return ret;
}
return 0;
}
#else
int scsi_scan(bool verbose)
{
unsigned char i, lun;
int ret;
if (verbose)
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++) {
ret = scsi_detect_dev(NULL, i, lun,
&scsi_dev_desc[scsi_max_devs]);
if (ret)
continue;
part_init(&scsi_dev_desc[scsi_max_devs]);
if (verbose) {
printf(" Device %d: ", 0);
dev_print(&scsi_dev_desc[scsi_max_devs]);
}
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
env_set_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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