smallsolar/u-boot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

scsi: Move drivers into new drivers/scsi directory

Browse Source 
At present we have the SCSI drivers in the drivers/block and common/
directories. It is better to split them out into their own place. Use
drivers/scsi which is what Linux does.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2017-06-14 21:28:27 -06:00
parent f2105c6182
commit 0fcd48fe00
10 changed files with 42 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/scsi/Kconfig Normal file
View File

@@ -0,0 +1,17 @@
config SCSI
bool "Support SCSI controllers"
help
This enables support for SCSI (Small Computer System Interface),
a parallel interface widely used with storage peripherals such as
hard drives and optical drives. The SCSI standards define physical
interfaces as well as protocols for controlling devices and
tranferring data.
config DM_SCSI
bool "Support SCSI controllers with driver model"
depends on BLK
help
This option enables the SCSI (Small Computer System Interface) uclass
which supports SCSI and SATA HDDs. For every device configuration
(IDs/LUNs) a block device is created with RAW read/write and
filesystem support.

20
drivers/scsi/Makefile Normal file
View File

@@ -0,0 +1,20 @@
#
# (C) Copyright 2000-2007
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# SPDX-License-Identifier: GPL-2.0+
#
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_DM_SCSI) += scsi-uclass.o
obj-$(CONFIG_SCSI) += scsi.o
endif
ifdef CONFIG_SPL_BUILD
ifdef CONFIG_SPL_SATA_SUPPORT
obj-$(CONFIG_DM_SCSI) += scsi-uclass.o
obj-$(CONFIG_SCSI) += scsi.o
endif
endif
obj-$(CONFIG_SANDBOX) += sandbox_scsi.o

25
drivers/scsi/sandbox_scsi.c Normal file
View File

@@ -0,0 +1,25 @@
/*
* Copyright (C) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*
* This file contains dummy implementations of SCSI functions requried so
* that CONFIG_SCSI can be enabled for sandbox.
*/
#include <common.h>
#include <scsi.h>
void scsi_bus_reset(void)
{
}
void scsi_init(void)
{
}
int scsi_exec(ccb *pccb)
{
return 0;
}

27
drivers/scsi/scsi-uclass.c Normal file
View File

@@ -0,0 +1,27 @@
/*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
* Copyright (c) 2016 Xilinx, Inc
* Written by Michal Simek
*
* Based on ahci-uclass.c
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <scsi.h>
static int scsi_post_probe(struct udevice *dev)
{
debug("%s: device %p\n", __func__, dev);
scsi_low_level_init(0, dev);
return 0;
}
UCLASS_DRIVER(scsi) = {
.id = UCLASS_SCSI,
.name = "scsi",
.post_probe = scsi_post_probe,
};

688
drivers/scsi/scsi.c Normal file
View File

@@ -0,0 +1,688 @@
/*
* (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_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
static void scsi_print_error(ccb *pccb)
{
/* Dummy function that could print an error for debugging */
}
#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
* @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(int target, int lun, struct blk_desc *dev_desc)
{
unsigned char perq, modi;
lbaint_t capacity;
unsigned long blksz;
ccb *pccb = (ccb *)&tempccb;
pccb->target = target;
pccb->lun = 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;
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, int mode)
{
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(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.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 (mode == 1) {
printf(" Device %d: ", 0);
dev_print(bdesc);
}
return 0;
}
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++)
do_scsi_scan_one(dev, i, lun, mode);
}
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++) {
ret = scsi_detect_dev(i, lun,
&scsi_dev_desc[scsi_max_devs]);
if (ret)
continue;
part_init(&scsi_dev_desc[scsi_max_devs]);
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