[people/ms/u-boot.git] / common / scsi.c

/*
 * (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>

#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

#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 */

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];

/* 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

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]);
}

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]);
}

void scsi_setup_read6(ccb *pccb, lbaint_t start, unsigned short blocks)
{
	pccb->cmd[0] = SCSI_READ6;
	pccb->cmd[1] = pccb->lun << 5 | ((unsigned char)(start >> 16) & 0x1f);
	pccb->cmd[2] = (unsigned char)(start >> 8) & 0xff;
	pccb->cmd[3] = (unsigned char)start & 0xff;
	pccb->cmd[4] = (unsigned char)blocks & 0xff;
	pccb->cmd[5] = 0;
	pccb->cmdlen = 6;
	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
	debug("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
	      pccb->cmd[0], pccb->cmd[1],
	      pccb->cmd[2], pccb->cmd[3], pccb->cmd[4]);
}


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
	int device = block_dev->devnum;
	lbaint_t start, blks;
	uintptr_t buf_addr;
	unsigned short smallblks = 0;
	ccb *pccb = (ccb *)&tempccb;
	device &= 0xff;

	/* Setup device */
	pccb->target = scsi_dev_desc[device].target;
	pccb->lun = scsi_dev_desc[device].lun;
	buf_addr = (unsigned long)buffer;
	start = blknr;
	blks = blkcnt;
	debug("\nscsi_read: dev %d startblk " LBAF
	      ", blccnt " LBAF " buffer %lx\n",
	      device, 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 = scsi_dev_desc[device].blksz * blocks;
			scsi_setup_read16(pccb, start, blocks);
			start += blocks;
			blks -= blocks;
		} else
#endif
		if (blks > SCSI_MAX_READ_BLK) {
			pccb->datalen = scsi_dev_desc[device].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 = scsi_dev_desc[device].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
	int device = block_dev->devnum;
	lbaint_t start, blks;
	uintptr_t buf_addr;
	unsigned short smallblks;
	ccb *pccb = (ccb *)&tempccb;

	device &= 0xff;

	/* Setup device */
	pccb->target = scsi_dev_desc[device].target;
	pccb->lun = scsi_dev_desc[device].lun;
	buf_addr = (unsigned long)buffer;
	start = blknr;
	blks = blkcnt;
	debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
	      __func__, device, start, blks, (unsigned long)buffer);
	do {
		pccb->pdata = (unsigned char *)buf_addr;
		if (blks > SCSI_MAX_WRITE_BLK) {
			pccb->datalen = (scsi_dev_desc[device].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 = scsi_dev_desc[device].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;
}

int scsi_get_disk_count(void)
{
	return scsi_max_devs;
}

#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
 */
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';
}


/* Trim trailing blanks, and NUL-terminate string
 */
void scsi_trim_trail(unsigned char *str, unsigned int len)
{
	unsigned char *p = str + len - 1;

	while (len-- > 0) {
		*p-- = '\0';
		if (*p != ' ')
			return;
	}
}

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
 */
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 */
}

static void scsi_init_dev_desc(struct blk_desc *dev_desc, int devnum)
{
	dev_desc->target = 0xff;
	dev_desc->lun = 0xff;
	dev_desc->lba = 0;
	dev_desc->blksz = 0;
	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;
	dev_desc->if_type = IF_TYPE_SCSI;
	dev_desc->devnum = devnum;
	dev_desc->part_type = PART_TYPE_UNKNOWN;
#ifndef CONFIG_BLK
	dev_desc->block_read = scsi_read;
	dev_desc->block_write = scsi_write;
#endif
}

/**
 * scsi_detect_dev - Detect scsi device
 *
 * @pccb: pointer to temporary SCSI command block
 * @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(ccb *pccb, struct blk_desc *dev_desc)
{
	unsigned char perq, modi;
	lbaint_t capacity;
	unsigned long blksz;

	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
 */
void scsi_scan(int mode)
{
	unsigned char i, lun;
	int ret;
	ccb *pccb = (ccb *)&tempccb;

	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++) {
		pccb->target = i;
		for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) {
			scsi_dev_desc[scsi_max_devs].lun = lun;
			ret = scsi_detect_dev(pccb,
					      &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
}

#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
Commit	Line	Data
11f610ed SG	1	/*
	2	* (C) Copyright 2001
	3	* Denis Peter, MPL AG Switzerland
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#include <common.h>
535556b2	9	#include <dm.h>
11f610ed SG	10	#include <inttypes.h>
	11	#include <pci.h>
	12	#include <scsi.h>
	13
	14	#ifdef CONFIG_SCSI_DEV_LIST
	15	#define SCSI_DEV_LIST CONFIG_SCSI_DEV_LIST
	16	#else
	17	#ifdef CONFIG_SCSI_SYM53C8XX
	18	#define SCSI_VEND_ID 0x1000
	19	#ifndef CONFIG_SCSI_DEV_ID
	20	#define SCSI_DEV_ID 0x0001
	21	#else
	22	#define SCSI_DEV_ID CONFIG_SCSI_DEV_ID
	23	#endif
	24	#elif defined CONFIG_SATA_ULI5288
	25
	26	#define SCSI_VEND_ID 0x10b9
	27	#define SCSI_DEV_ID 0x5288
	28
	29	#elif !defined(CONFIG_SCSI_AHCI_PLAT)
	30	#error no scsi device defined
	31	#endif
	32	#define SCSI_DEV_LIST {SCSI_VEND_ID, SCSI_DEV_ID}
	33	#endif
	34
	35	#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
	36	const struct pci_device_id scsi_device_list[] = { SCSI_DEV_LIST };
	37	#endif
	38	static ccb tempccb; /* temporary scsi command buffer */
	39
	40	static unsigned char tempbuff[512]; /* temporary data buffer */
	41
	42	static int scsi_max_devs; /* number of highest available scsi device */
	43
	44	static int scsi_curr_dev; /* current device */
	45
	46	static struct blk_desc scsi_dev_desc[CONFIG_SYS_SCSI_MAX_DEVICE];
	47
	48	/* almost the maximum amount of the scsi_ext command.. */
	49	#define SCSI_MAX_READ_BLK 0xFFFF
	50	#define SCSI_LBA48_READ 0xFFFFFFF
	51
	52	#ifdef CONFIG_SYS_64BIT_LBA
	53	void scsi_setup_read16(ccb *pccb, lbaint_t start, unsigned long blocks)
	54	{
	55	pccb->cmd[0] = SCSI_READ16;
	56	pccb->cmd[1] = pccb->lun << 5;
	57	pccb->cmd[2] = (unsigned char)(start >> 56) & 0xff;
	58	pccb->cmd[3] = (unsigned char)(start >> 48) & 0xff;
	59	pccb->cmd[4] = (unsigned char)(start >> 40) & 0xff;
	60	pccb->cmd[5] = (unsigned char)(start >> 32) & 0xff;
	61	pccb->cmd[6] = (unsigned char)(start >> 24) & 0xff;
	62	pccb->cmd[7] = (unsigned char)(start >> 16) & 0xff;
	63	pccb->cmd[8] = (unsigned char)(start >> 8) & 0xff;
	64	pccb->cmd[9] = (unsigned char)start & 0xff;
	65	pccb->cmd[10] = 0;
	66	pccb->cmd[11] = (unsigned char)(blocks >> 24) & 0xff;
	67	pccb->cmd[12] = (unsigned char)(blocks >> 16) & 0xff;
	68	pccb->cmd[13] = (unsigned char)(blocks >> 8) & 0xff;
	69	pccb->cmd[14] = (unsigned char)blocks & 0xff;
	70	pccb->cmd[15] = 0;
	71	pccb->cmdlen = 16;
	72	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
	73	debug("scsi_setup_read16: cmd: %02X %02X startblk %02X%02X%02X%02X%02X%02X%02X%02X blccnt %02X%02X%02X%02X\n",
74	pccb->cmd[0], pccb->cmd[1],
75	pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
76	pccb->cmd[6], pccb->cmd[7], pccb->cmd[8], pccb->cmd[9],
77	pccb->cmd[11], pccb->cmd[12], pccb->cmd[13], pccb->cmd[14]);
78	}
79	#endif
80
81	void scsi_setup_read_ext(ccb *pccb, lbaint_t start, unsigned short blocks)
82	{
83	pccb->cmd[0] = SCSI_READ10;
84	pccb->cmd[1] = pccb->lun << 5;
85	pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
86	pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
87	pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
88	pccb->cmd[5] = (unsigned char)start & 0xff;
89	pccb->cmd[6] = 0;
90	pccb->cmd[7] = (unsigned char)(blocks >> 8) & 0xff;
91	pccb->cmd[8] = (unsigned char)blocks & 0xff;
92	pccb->cmd[6] = 0;
93	pccb->cmdlen = 10;
94	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
95	debug("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
96	pccb->cmd[0], pccb->cmd[1],
97	pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
98	pccb->cmd[7], pccb->cmd[8]);
99	}
100
101	void scsi_setup_write_ext(ccb *pccb, lbaint_t start, unsigned short blocks)
102	{
103	pccb->cmd[0] = SCSI_WRITE10;
104	pccb->cmd[1] = pccb->lun << 5;
105	pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
106	pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
107	pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
108	pccb->cmd[5] = (unsigned char)start & 0xff;
109	pccb->cmd[6] = 0;
110	pccb->cmd[7] = ((unsigned char)(blocks >> 8)) & 0xff;
111	pccb->cmd[8] = (unsigned char)blocks & 0xff;
112	pccb->cmd[9] = 0;
113	pccb->cmdlen = 10;
114	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
115	debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
116	__func__,
117	pccb->cmd[0], pccb->cmd[1],
118	pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
119	pccb->cmd[7], pccb->cmd[8]);
120	}
121
122	void scsi_setup_read6(ccb *pccb, lbaint_t start, unsigned short blocks)
123	{
124	pccb->cmd[0] = SCSI_READ6;
125	pccb->cmd[1] = pccb->lun << 5 \| ((unsigned char)(start >> 16) & 0x1f);
126	pccb->cmd[2] = (unsigned char)(start >> 8) & 0xff;
127	pccb->cmd[3] = (unsigned char)start & 0xff;
128	pccb->cmd[4] = (unsigned char)blocks & 0xff;
129	pccb->cmd[5] = 0;
130	pccb->cmdlen = 6;
131	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
132	debug("scsi_setup_read6: cmd: %02X %02X startblk %02X%02X blccnt %02X\n",
133	pccb->cmd[0], pccb->cmd[1],
134	pccb->cmd[2], pccb->cmd[3], pccb->cmd[4]);
135	}
136
137
138	void scsi_setup_inquiry(ccb *pccb)
139	{
140	pccb->cmd[0] = SCSI_INQUIRY;
141	pccb->cmd[1] = pccb->lun << 5;
142	pccb->cmd[2] = 0;
143	pccb->cmd[3] = 0;
144	if (pccb->datalen > 255)
145	pccb->cmd[4] = 255;
146	else
147	pccb->cmd[4] = (unsigned char)pccb->datalen;
148	pccb->cmd[5] = 0;
149	pccb->cmdlen = 6;
150	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
151	}
152
535556b2 SG	153	#ifdef CONFIG_BLK
	154	static ulong scsi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
	155	void *buffer)
	156	#else
11f610ed SG	157	static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
11f610ed SG	158	lbaint_t blkcnt, void *buffer)
535556b2	159	#endif
11f610ed	160	{
535556b2 SG	161	#ifdef CONFIG_BLK
	162	struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
	163	#endif
11f610ed SG	164	int device = block_dev->devnum;
	165	lbaint_t start, blks;
	166	uintptr_t buf_addr;
	167	unsigned short smallblks = 0;
	168	ccb pccb = (ccb )&tempccb;
	169	device &= 0xff;
	170
	171	/* Setup device */
	172	pccb->target = scsi_dev_desc[device].target;
	173	pccb->lun = scsi_dev_desc[device].lun;
	174	buf_addr = (unsigned long)buffer;
	175	start = blknr;
	176	blks = blkcnt;
	177	debug("\nscsi_read: dev %d startblk " LBAF
	178	", blccnt " LBAF " buffer %lx\n",
	179	device, start, blks, (unsigned long)buffer);
	180	do {
	181	pccb->pdata = (unsigned char *)buf_addr;
	182	#ifdef CONFIG_SYS_64BIT_LBA
	183	if (start > SCSI_LBA48_READ) {
	184	unsigned long blocks;
	185	blocks = min_t(lbaint_t, blks, SCSI_MAX_READ_BLK);
	186	pccb->datalen = scsi_dev_desc[device].blksz * blocks;
	187	scsi_setup_read16(pccb, start, blocks);
	188	start += blocks;
	189	blks -= blocks;
	190	} else
	191	#endif
	192	if (blks > SCSI_MAX_READ_BLK) {
	193	pccb->datalen = scsi_dev_desc[device].blksz *
	194	SCSI_MAX_READ_BLK;
	195	smallblks = SCSI_MAX_READ_BLK;
	196	scsi_setup_read_ext(pccb, start, smallblks);
	197	start += SCSI_MAX_READ_BLK;
	198	blks -= SCSI_MAX_READ_BLK;
	199	} else {
	200	pccb->datalen = scsi_dev_desc[device].blksz * blks;
	201	smallblks = (unsigned short)blks;
	202	scsi_setup_read_ext(pccb, start, smallblks);
	203	start += blks;
	204	blks = 0;
	205	}
	206	debug("scsi_read_ext: startblk " LBAF
	207	", blccnt %x buffer %" PRIXPTR "\n",
	208	start, smallblks, buf_addr);
	209	if (scsi_exec(pccb) != true) {
	210	scsi_print_error(pccb);
	211	blkcnt -= blks;
	212	break;
	213	}
	214	buf_addr += pccb->datalen;
	215	} while (blks != 0);
	216	debug("scsi_read_ext: end startblk " LBAF
	217	", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr);
	218	return blkcnt;
	219	}
	220
	221	/*******************************************************************************
	222	* scsi_write
	223	*/
	224
	225	/* Almost the maximum amount of the scsi_ext command.. */
	226	#define SCSI_MAX_WRITE_BLK 0xFFFF
	227
535556b2 SG	228	#ifdef CONFIG_BLK
	229	static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
	230	const void *buffer)
	231	#else
11f610ed SG	232	static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
11f610ed SG	233	lbaint_t blkcnt, const void *buffer)
535556b2	234	#endif
11f610ed	235	{
535556b2 SG	236	#ifdef CONFIG_BLK
	237	struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
	238	#endif
11f610ed SG	239	int device = block_dev->devnum;
	240	lbaint_t start, blks;
	241	uintptr_t buf_addr;
	242	unsigned short smallblks;
	243	ccb pccb = (ccb )&tempccb;
	244
	245	device &= 0xff;
	246
	247	/* Setup device */
	248	pccb->target = scsi_dev_desc[device].target;
	249	pccb->lun = scsi_dev_desc[device].lun;
	250	buf_addr = (unsigned long)buffer;
	251	start = blknr;
	252	blks = blkcnt;
	253	debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
	254	__func__, device, start, blks, (unsigned long)buffer);
	255	do {
	256	pccb->pdata = (unsigned char *)buf_addr;
	257	if (blks > SCSI_MAX_WRITE_BLK) {
	258	pccb->datalen = (scsi_dev_desc[device].blksz *
	259	SCSI_MAX_WRITE_BLK);
	260	smallblks = SCSI_MAX_WRITE_BLK;
	261	scsi_setup_write_ext(pccb, start, smallblks);
	262	start += SCSI_MAX_WRITE_BLK;
	263	blks -= SCSI_MAX_WRITE_BLK;
	264	} else {
	265	pccb->datalen = scsi_dev_desc[device].blksz * blks;
	266	smallblks = (unsigned short)blks;
	267	scsi_setup_write_ext(pccb, start, smallblks);
	268	start += blks;
	269	blks = 0;
	270	}
	271	debug("%s: startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
	272	__func__, start, smallblks, buf_addr);
	273	if (scsi_exec(pccb) != true) {
	274	scsi_print_error(pccb);
	275	blkcnt -= blks;
	276	break;
	277	}
	278	buf_addr += pccb->datalen;
	279	} while (blks != 0);
	280	debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
	281	__func__, start, smallblks, buf_addr);
	282	return blkcnt;
	283	}
	284
	285	int scsi_get_disk_count(void)
	286	{
	287	return scsi_max_devs;
	288	}
	289
	290	#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
	291	void scsi_init(void)
	292	{
	293	int busdevfunc = -1;
	294	int i;
	295	/*
	296	* Find a device from the list, this driver will support a single
	297	* controller.
	298	*/
	299	for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
	300	/* get PCI Device ID */
	301	#ifdef CONFIG_DM_PCI
	302	struct udevice *dev;
303	int ret;
304
305	ret = dm_pci_find_device(scsi_device_list[i].vendor,
306	scsi_device_list[i].device, 0, &dev);
307	if (!ret) {
308	busdevfunc = dm_pci_get_bdf(dev);
309	break;
310	}
311	#else
312	busdevfunc = pci_find_device(scsi_device_list[i].vendor,
313	scsi_device_list[i].device,
314	0);
315	#endif
316	if (busdevfunc != -1)
317	break;
318	}
319
320	if (busdevfunc == -1) {
321	printf("Error: SCSI Controller(s) ");
322	for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
323	printf("%04X:%04X ",
324	scsi_device_list[i].vendor,
325	scsi_device_list[i].device);
326	}
327	printf("not found\n");
328	return;
329	}
330	#ifdef DEBUG
331	else {
332	printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
333	scsi_device_list[i].vendor,
334	scsi_device_list[i].device,
335	(busdevfunc >> 16) & 0xFF,
336	(busdevfunc >> 11) & 0x1F,
337	(busdevfunc >> 8) & 0x7);
338	}
339	#endif
340	bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
341	scsi_low_level_init(busdevfunc);
342	scsi_scan(1);
343	bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
344	}
345	#endif
346
11f610ed SG	347	/* copy src to dest, skipping leading and trailing blanks
	348	* and null terminate the string
	349	*/
	350	void scsi_ident_cpy(unsigned char dest, unsigned char src, unsigned int len)
	351	{
	352	int start, end;
	353
	354	start = 0;
	355	while (start < len) {
	356	if (src[start] != ' ')
	357	break;
	358	start++;
	359	}
	360	end = len-1;
	361	while (end > start) {
	362	if (src[end] != ' ')
	363	break;
	364	end--;
	365	}
	366	for (; start <= end; start++)
	367	*dest ++= src[start];
	368	*dest = '\0';
	369	}
	370
	371
	372	/* Trim trailing blanks, and NUL-terminate string
	373	*/
	374	void scsi_trim_trail(unsigned char *str, unsigned int len)
	375	{
	376	unsigned char *p = str + len - 1;
	377
	378	while (len-- > 0) {
	379	*p-- = '\0';
	380	if (*p != ' ')
	381	return;
	382	}
	383	}
	384
	385	int scsi_read_capacity(ccb pccb, lbaint_t capacity, unsigned long *blksz)
	386	{
	387	*capacity = 0;
	388
	389	memset(pccb->cmd, '\0', sizeof(pccb->cmd));
	390	pccb->cmd[0] = SCSI_RD_CAPAC10;
	391	pccb->cmd[1] = pccb->lun << 5;
	392	pccb->cmdlen = 10;
	393	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
	394
	395	pccb->datalen = 8;
	396	if (scsi_exec(pccb) != true)
	397	return 1;
	398
	399	*capacity = ((lbaint_t)pccb->pdata[0] << 24) \|
	400	((lbaint_t)pccb->pdata[1] << 16) \|
	401	((lbaint_t)pccb->pdata[2] << 8) \|
	402	((lbaint_t)pccb->pdata[3]);
	403
	404	if (*capacity != 0xffffffff) {
	405	/* Read capacity (10) was sufficient for this drive. */
	406	*blksz = ((unsigned long)pccb->pdata[4] << 24) \|
	407	((unsigned long)pccb->pdata[5] << 16) \|
	408	((unsigned long)pccb->pdata[6] << 8) \|
	409	((unsigned long)pccb->pdata[7]);
	410	return 0;
411	}
412
413	/* Read capacity (10) was insufficient. Use read capacity (16). */
414	memset(pccb->cmd, '\0', sizeof(pccb->cmd));
415	pccb->cmd[0] = SCSI_RD_CAPAC16;
416	pccb->cmd[1] = 0x10;
417	pccb->cmdlen = 16;
418	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
419
420	pccb->datalen = 16;
421	if (scsi_exec(pccb) != true)
422	return 1;
423
424	*capacity = ((uint64_t)pccb->pdata[0] << 56) \|
425	((uint64_t)pccb->pdata[1] << 48) \|
426	((uint64_t)pccb->pdata[2] << 40) \|
427	((uint64_t)pccb->pdata[3] << 32) \|
428	((uint64_t)pccb->pdata[4] << 24) \|
429	((uint64_t)pccb->pdata[5] << 16) \|
430	((uint64_t)pccb->pdata[6] << 8) \|
431	((uint64_t)pccb->pdata[7]);
432
433	*blksz = ((uint64_t)pccb->pdata[8] << 56) \|
434	((uint64_t)pccb->pdata[9] << 48) \|
435	((uint64_t)pccb->pdata[10] << 40) \|
436	((uint64_t)pccb->pdata[11] << 32) \|
437	((uint64_t)pccb->pdata[12] << 24) \|
438	((uint64_t)pccb->pdata[13] << 16) \|
439	((uint64_t)pccb->pdata[14] << 8) \|
440	((uint64_t)pccb->pdata[15]);
441
442	return 0;
443	}
444
445
446	/*
447	* Some setup (fill-in) routines
448	*/
449	void scsi_setup_test_unit_ready(ccb *pccb)
450	{
451	pccb->cmd[0] = SCSI_TST_U_RDY;
452	pccb->cmd[1] = pccb->lun << 5;
453	pccb->cmd[2] = 0;
454	pccb->cmd[3] = 0;
455	pccb->cmd[4] = 0;
456	pccb->cmd[5] = 0;
457	pccb->cmdlen = 6;
458	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
459	}
460
92ca476c MS	461	static void scsi_init_dev_desc(struct blk_desc *dev_desc, int devnum)
	462	{
	463	dev_desc->target = 0xff;
	464	dev_desc->lun = 0xff;
	465	dev_desc->lba = 0;
	466	dev_desc->blksz = 0;
	467	dev_desc->log2blksz =
	468	LOG2_INVALID(typeof(dev_desc->log2blksz));
	469	dev_desc->type = DEV_TYPE_UNKNOWN;
	470	dev_desc->vendor[0] = 0;
	471	dev_desc->product[0] = 0;
	472	dev_desc->revision[0] = 0;
	473	dev_desc->removable = false;
	474	dev_desc->if_type = IF_TYPE_SCSI;
	475	dev_desc->devnum = devnum;
	476	dev_desc->part_type = PART_TYPE_UNKNOWN;
	477	#ifndef CONFIG_BLK
	478	dev_desc->block_read = scsi_read;
	479	dev_desc->block_write = scsi_write;
	480	#endif
	481	}
	482
570712f4 MS	483	/**
	484	* scsi_detect_dev - Detect scsi device
	485	*
	486	* @pccb: pointer to temporary SCSI command block
	487	* @dev_desc: block device description
570712f4 MS	488	*
570712f4 MS	489	* The scsi_detect_dev detects and fills a dev_desc structure when the device is
4dbee176	490	* detected. The LUN number is taken from the struct blk_desc *dev_desc.
570712f4 MS	491	*
	492	* Return: 0 on success, error value otherwise
	493	*/
4dbee176	494	static int scsi_detect_dev(ccb pccb, struct blk_desc dev_desc)
570712f4 MS	495	{
	496	unsigned char perq, modi;
	497	lbaint_t capacity;
	498	unsigned long blksz;
	499
4dbee176	500	pccb->lun = dev_desc->lun;
570712f4 MS	501	pccb->pdata = (unsigned char *)&tempbuff;
	502	pccb->datalen = 512;
	503	scsi_setup_inquiry(pccb);
	504	if (scsi_exec(pccb) != true) {
	505	if (pccb->contr_stat == SCSI_SEL_TIME_OUT) {
	506	/*
	507	* selection timeout => assuming no
	508	* device present
	509	*/
	510	debug("Selection timeout ID %d\n",
	511	pccb->target);
	512	return -ETIMEDOUT;
	513	}
	514	scsi_print_error(pccb);
	515	return -ENODEV;
	516	}
	517	perq = tempbuff[0];
	518	modi = tempbuff[1];
	519	if ((perq & 0x1f) == 0x1f)
	520	return -ENODEV; /* skip unknown devices */
	521	if ((modi & 0x80) == 0x80) /* drive is removable */
	522	dev_desc->removable = true;
	523	/* get info for this device */
	524	scsi_ident_cpy((unsigned char *)dev_desc->vendor,
	525	&tempbuff[8], 8);
	526	scsi_ident_cpy((unsigned char *)dev_desc->product,
	527	&tempbuff[16], 16);
	528	scsi_ident_cpy((unsigned char *)dev_desc->revision,
	529	&tempbuff[32], 4);
	530	dev_desc->target = pccb->target;
	531	dev_desc->lun = pccb->lun;
	532
	533	pccb->datalen = 0;
	534	scsi_setup_test_unit_ready(pccb);
	535	if (scsi_exec(pccb) != true) {
	536	if (dev_desc->removable) {
	537	dev_desc->type = perq;
	538	goto removable;
	539	}
	540	scsi_print_error(pccb);
	541	return -EINVAL;
	542	}
	543	if (scsi_read_capacity(pccb, &capacity, &blksz)) {
	544	scsi_print_error(pccb);
	545	return -EINVAL;
	546	}
	547	dev_desc->lba = capacity;
	548	dev_desc->blksz = blksz;
	549	dev_desc->log2blksz = LOG2(dev_desc->blksz);
	550	dev_desc->type = perq;
	551	part_init(&dev_desc[0]);
	552	removable:
	553	return 0;
	554	}
	555
11f610ed SG	556	/*
	557	* (re)-scan the scsi bus and reports scsi device info
	558	* to the user if mode = 1
	559	*/
	560	void scsi_scan(int mode)
	561	{
570712f4 MS	562	unsigned char i, lun;
570712f4 MS	563	int ret;
11f610ed SG	564	ccb pccb = (ccb )&tempccb;
	565
	566	if (mode == 1)
	567	printf("scanning bus for devices...\n");
92ca476c MS	568	for (i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++)
	569	scsi_init_dev_desc(&scsi_dev_desc[i], i);
	570
11f610ed SG	571	scsi_max_devs = 0;
	572	for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
	573	pccb->target = i;
	574	for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) {
4dbee176	575	scsi_dev_desc[scsi_max_devs].lun = lun;
570712f4	576	ret = scsi_detect_dev(pccb,
4dbee176	577	&scsi_dev_desc[scsi_max_devs]);
570712f4	578	if (ret)
11f610ed	579	continue;
570712f4	580
11f610ed	581	if (mode == 1) {
570712f4	582	printf(" Device %d: ", 0);
11f610ed SG	583	dev_print(&scsi_dev_desc[scsi_max_devs]);
	584	} /* if mode */
	585	scsi_max_devs++;
	586	} /* next LUN */
	587	}
	588	if (scsi_max_devs > 0)
	589	scsi_curr_dev = 0;
	590	else
	591	scsi_curr_dev = -1;
	592
	593	printf("Found %d device(s).\n", scsi_max_devs);
	594	#ifndef CONFIG_SPL_BUILD
	595	setenv_ulong("scsidevs", scsi_max_devs);
	596	#endif
	597	}
	598
535556b2 SG	599	#ifdef CONFIG_BLK
	600	static const struct blk_ops scsi_blk_ops = {
	601	.read = scsi_read,
	602	.write = scsi_write,
	603	};
	604
	605	U_BOOT_DRIVER(scsi_blk) = {
	606	.name = "scsi_blk",
	607	.id = UCLASS_BLK,
	608	.ops = &scsi_blk_ops,
	609	};
	610	#else
11f610ed	611	U_BOOT_LEGACY_BLK(scsi) = {
69c125fe	612	.if_typename = "scsi",
11f610ed SG	613	.if_type = IF_TYPE_SCSI,
	614	.max_devs = CONFIG_SYS_SCSI_MAX_DEVICE,
	615	.desc = scsi_dev_desc,
	616	};
535556b2	617	#endif