[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

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
}

/**
 * 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);
}

/**
 * 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
 */
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;
}

#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
545a2847 MS	81	static void scsi_setup_read_ext(ccb *pccb, lbaint_t start,
545a2847 MS	82	unsigned short blocks)
11f610ed SG	83	{
	84	pccb->cmd[0] = SCSI_READ10;
	85	pccb->cmd[1] = pccb->lun << 5;
	86	pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
	87	pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
	88	pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
	89	pccb->cmd[5] = (unsigned char)start & 0xff;
	90	pccb->cmd[6] = 0;
	91	pccb->cmd[7] = (unsigned char)(blocks >> 8) & 0xff;
	92	pccb->cmd[8] = (unsigned char)blocks & 0xff;
	93	pccb->cmd[6] = 0;
	94	pccb->cmdlen = 10;
	95	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
	96	debug("scsi_setup_read_ext: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
	97	pccb->cmd[0], pccb->cmd[1],
	98	pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
	99	pccb->cmd[7], pccb->cmd[8]);
	100	}
	101
545a2847 MS	102	static void scsi_setup_write_ext(ccb *pccb, lbaint_t start,
545a2847 MS	103	unsigned short blocks)
11f610ed SG	104	{
	105	pccb->cmd[0] = SCSI_WRITE10;
	106	pccb->cmd[1] = pccb->lun << 5;
	107	pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff;
	108	pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff;
	109	pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff;
	110	pccb->cmd[5] = (unsigned char)start & 0xff;
	111	pccb->cmd[6] = 0;
	112	pccb->cmd[7] = ((unsigned char)(blocks >> 8)) & 0xff;
	113	pccb->cmd[8] = (unsigned char)blocks & 0xff;
	114	pccb->cmd[9] = 0;
	115	pccb->cmdlen = 10;
	116	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
	117	debug("%s: cmd: %02X %02X startblk %02X%02X%02X%02X blccnt %02X%02X\n",
	118	__func__,
	119	pccb->cmd[0], pccb->cmd[1],
	120	pccb->cmd[2], pccb->cmd[3], pccb->cmd[4], pccb->cmd[5],
	121	pccb->cmd[7], pccb->cmd[8]);
	122	}
	123
545a2847	124	static void scsi_setup_inquiry(ccb *pccb)
11f610ed SG	125	{
	126	pccb->cmd[0] = SCSI_INQUIRY;
	127	pccb->cmd[1] = pccb->lun << 5;
	128	pccb->cmd[2] = 0;
	129	pccb->cmd[3] = 0;
	130	if (pccb->datalen > 255)
	131	pccb->cmd[4] = 255;
	132	else
	133	pccb->cmd[4] = (unsigned char)pccb->datalen;
	134	pccb->cmd[5] = 0;
	135	pccb->cmdlen = 6;
	136	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
	137	}
	138
535556b2 SG	139	#ifdef CONFIG_BLK
	140	static ulong scsi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
	141	void *buffer)
	142	#else
11f610ed SG	143	static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
11f610ed SG	144	lbaint_t blkcnt, void *buffer)
535556b2	145	#endif
11f610ed	146	{
535556b2 SG	147	#ifdef CONFIG_BLK
	148	struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
	149	#endif
11f610ed SG	150	lbaint_t start, blks;
	151	uintptr_t buf_addr;
	152	unsigned short smallblks = 0;
	153	ccb pccb = (ccb )&tempccb;
11f610ed SG	154
11f610ed SG	155	/* Setup device */
cdb93b27 MS	156	pccb->target = block_dev->target;
cdb93b27 MS	157	pccb->lun = block_dev->lun;
11f610ed SG	158	buf_addr = (unsigned long)buffer;
	159	start = blknr;
	160	blks = blkcnt;
	161	debug("\nscsi_read: dev %d startblk " LBAF
	162	", blccnt " LBAF " buffer %lx\n",
cdb93b27	163	block_dev->devnum, start, blks, (unsigned long)buffer);
11f610ed SG	164	do {
	165	pccb->pdata = (unsigned char *)buf_addr;
	166	#ifdef CONFIG_SYS_64BIT_LBA
	167	if (start > SCSI_LBA48_READ) {
	168	unsigned long blocks;
	169	blocks = min_t(lbaint_t, blks, SCSI_MAX_READ_BLK);
cdb93b27	170	pccb->datalen = block_dev->blksz * blocks;
11f610ed SG	171	scsi_setup_read16(pccb, start, blocks);
	172	start += blocks;
	173	blks -= blocks;
	174	} else
	175	#endif
	176	if (blks > SCSI_MAX_READ_BLK) {
cdb93b27	177	pccb->datalen = block_dev->blksz *
11f610ed SG	178	SCSI_MAX_READ_BLK;
	179	smallblks = SCSI_MAX_READ_BLK;
	180	scsi_setup_read_ext(pccb, start, smallblks);
	181	start += SCSI_MAX_READ_BLK;
	182	blks -= SCSI_MAX_READ_BLK;
	183	} else {
cdb93b27	184	pccb->datalen = block_dev->blksz * blks;
11f610ed SG	185	smallblks = (unsigned short)blks;
	186	scsi_setup_read_ext(pccb, start, smallblks);
	187	start += blks;
	188	blks = 0;
	189	}
	190	debug("scsi_read_ext: startblk " LBAF
	191	", blccnt %x buffer %" PRIXPTR "\n",
	192	start, smallblks, buf_addr);
	193	if (scsi_exec(pccb) != true) {
	194	scsi_print_error(pccb);
	195	blkcnt -= blks;
	196	break;
	197	}
	198	buf_addr += pccb->datalen;
	199	} while (blks != 0);
	200	debug("scsi_read_ext: end startblk " LBAF
	201	", blccnt %x buffer %" PRIXPTR "\n", start, smallblks, buf_addr);
	202	return blkcnt;
	203	}
	204
	205	/*******************************************************************************
	206	* scsi_write
	207	*/
	208
	209	/* Almost the maximum amount of the scsi_ext command.. */
	210	#define SCSI_MAX_WRITE_BLK 0xFFFF
	211
535556b2 SG	212	#ifdef CONFIG_BLK
	213	static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
	214	const void *buffer)
	215	#else
11f610ed SG	216	static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
11f610ed SG	217	lbaint_t blkcnt, const void *buffer)
535556b2	218	#endif
11f610ed	219	{
535556b2 SG	220	#ifdef CONFIG_BLK
	221	struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
	222	#endif
11f610ed SG	223	lbaint_t start, blks;
	224	uintptr_t buf_addr;
	225	unsigned short smallblks;
	226	ccb pccb = (ccb )&tempccb;
	227
11f610ed	228	/* Setup device */
cdb93b27 MS	229	pccb->target = block_dev->target;
cdb93b27 MS	230	pccb->lun = block_dev->lun;
11f610ed SG	231	buf_addr = (unsigned long)buffer;
	232	start = blknr;
	233	blks = blkcnt;
	234	debug("\n%s: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n",
cdb93b27	235	__func__, block_dev->devnum, start, blks, (unsigned long)buffer);
11f610ed SG	236	do {
	237	pccb->pdata = (unsigned char *)buf_addr;
	238	if (blks > SCSI_MAX_WRITE_BLK) {
cdb93b27	239	pccb->datalen = (block_dev->blksz *
11f610ed SG	240	SCSI_MAX_WRITE_BLK);
	241	smallblks = SCSI_MAX_WRITE_BLK;
	242	scsi_setup_write_ext(pccb, start, smallblks);
	243	start += SCSI_MAX_WRITE_BLK;
	244	blks -= SCSI_MAX_WRITE_BLK;
	245	} else {
cdb93b27	246	pccb->datalen = block_dev->blksz * blks;
11f610ed SG	247	smallblks = (unsigned short)blks;
	248	scsi_setup_write_ext(pccb, start, smallblks);
	249	start += blks;
	250	blks = 0;
	251	}
	252	debug("%s: startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
	253	__func__, start, smallblks, buf_addr);
	254	if (scsi_exec(pccb) != true) {
	255	scsi_print_error(pccb);
	256	blkcnt -= blks;
	257	break;
	258	}
	259	buf_addr += pccb->datalen;
	260	} while (blks != 0);
	261	debug("%s: end startblk " LBAF ", blccnt %x buffer %" PRIXPTR "\n",
	262	__func__, start, smallblks, buf_addr);
	263	return blkcnt;
	264	}
	265
11f610ed SG	266	#if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT)
	267	void scsi_init(void)
	268	{
	269	int busdevfunc = -1;
	270	int i;
	271	/*
	272	* Find a device from the list, this driver will support a single
	273	* controller.
	274	*/
	275	for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
	276	/* get PCI Device ID */
	277	#ifdef CONFIG_DM_PCI
	278	struct udevice *dev;
	279	int ret;
	280
	281	ret = dm_pci_find_device(scsi_device_list[i].vendor,
	282	scsi_device_list[i].device, 0, &dev);
	283	if (!ret) {
	284	busdevfunc = dm_pci_get_bdf(dev);
	285	break;
	286	}
	287	#else
	288	busdevfunc = pci_find_device(scsi_device_list[i].vendor,
	289	scsi_device_list[i].device,
	290	0);
	291	#endif
	292	if (busdevfunc != -1)
	293	break;
	294	}
	295
	296	if (busdevfunc == -1) {
	297	printf("Error: SCSI Controller(s) ");
	298	for (i = 0; i < ARRAY_SIZE(scsi_device_list); i++) {
	299	printf("%04X:%04X ",
	300	scsi_device_list[i].vendor,
	301	scsi_device_list[i].device);
	302	}
	303	printf("not found\n");
	304	return;
	305	}
	306	#ifdef DEBUG
	307	else {
	308	printf("SCSI Controller (%04X,%04X) found (%d:%d:%d)\n",
	309	scsi_device_list[i].vendor,
	310	scsi_device_list[i].device,
	311	(busdevfunc >> 16) & 0xFF,
	312	(busdevfunc >> 11) & 0x1F,
	313	(busdevfunc >> 8) & 0x7);
	314	}
	315	#endif
	316	bootstage_start(BOOTSTAGE_ID_ACCUM_SCSI, "ahci");
	317	scsi_low_level_init(busdevfunc);
	318	scsi_scan(1);
	319	bootstage_accum(BOOTSTAGE_ID_ACCUM_SCSI);
	320	}
	321	#endif
	322
11f610ed SG	323	/* copy src to dest, skipping leading and trailing blanks
	324	* and null terminate the string
	325	*/
545a2847 MS	326	static void scsi_ident_cpy(unsigned char dest, unsigned char src,
545a2847 MS	327	unsigned int len)
11f610ed SG	328	{
	329	int start, end;
	330
	331	start = 0;
	332	while (start < len) {
	333	if (src[start] != ' ')
	334	break;
	335	start++;
	336	}
	337	end = len-1;
	338	while (end > start) {
	339	if (src[end] != ' ')
	340	break;
	341	end--;
	342	}
	343	for (; start <= end; start++)
	344	*dest ++= src[start];
	345	*dest = '\0';
	346	}
	347
545a2847 MS	348	static int scsi_read_capacity(ccb pccb, lbaint_t capacity,
545a2847 MS	349	unsigned long *blksz)
11f610ed SG	350	{
	351	*capacity = 0;
	352
	353	memset(pccb->cmd, '\0', sizeof(pccb->cmd));
	354	pccb->cmd[0] = SCSI_RD_CAPAC10;
	355	pccb->cmd[1] = pccb->lun << 5;
	356	pccb->cmdlen = 10;
	357	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
	358
	359	pccb->datalen = 8;
	360	if (scsi_exec(pccb) != true)
	361	return 1;
	362
	363	*capacity = ((lbaint_t)pccb->pdata[0] << 24) \|
	364	((lbaint_t)pccb->pdata[1] << 16) \|
	365	((lbaint_t)pccb->pdata[2] << 8) \|
	366	((lbaint_t)pccb->pdata[3]);
	367
	368	if (*capacity != 0xffffffff) {
	369	/* Read capacity (10) was sufficient for this drive. */
	370	*blksz = ((unsigned long)pccb->pdata[4] << 24) \|
	371	((unsigned long)pccb->pdata[5] << 16) \|
	372	((unsigned long)pccb->pdata[6] << 8) \|
	373	((unsigned long)pccb->pdata[7]);
	374	return 0;
	375	}
	376
	377	/* Read capacity (10) was insufficient. Use read capacity (16). */
	378	memset(pccb->cmd, '\0', sizeof(pccb->cmd));
	379	pccb->cmd[0] = SCSI_RD_CAPAC16;
	380	pccb->cmd[1] = 0x10;
	381	pccb->cmdlen = 16;
	382	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
	383
	384	pccb->datalen = 16;
	385	if (scsi_exec(pccb) != true)
	386	return 1;
	387
	388	*capacity = ((uint64_t)pccb->pdata[0] << 56) \|
	389	((uint64_t)pccb->pdata[1] << 48) \|
	390	((uint64_t)pccb->pdata[2] << 40) \|
	391	((uint64_t)pccb->pdata[3] << 32) \|
	392	((uint64_t)pccb->pdata[4] << 24) \|
	393	((uint64_t)pccb->pdata[5] << 16) \|
	394	((uint64_t)pccb->pdata[6] << 8) \|
	395	((uint64_t)pccb->pdata[7]);
	396
	397	*blksz = ((uint64_t)pccb->pdata[8] << 56) \|
	398	((uint64_t)pccb->pdata[9] << 48) \|
	399	((uint64_t)pccb->pdata[10] << 40) \|
	400	((uint64_t)pccb->pdata[11] << 32) \|
	401	((uint64_t)pccb->pdata[12] << 24) \|
	402	((uint64_t)pccb->pdata[13] << 16) \|
	403	((uint64_t)pccb->pdata[14] << 8) \|
	404	((uint64_t)pccb->pdata[15]);
	405
	406	return 0;
	407	}
	408
	409
	410	/*
	411	* Some setup (fill-in) routines
	412	*/
545a2847	413	static void scsi_setup_test_unit_ready(ccb *pccb)
11f610ed SG	414	{
	415	pccb->cmd[0] = SCSI_TST_U_RDY;
	416	pccb->cmd[1] = pccb->lun << 5;
	417	pccb->cmd[2] = 0;
	418	pccb->cmd[3] = 0;
	419	pccb->cmd[4] = 0;
	420	pccb->cmd[5] = 0;
	421	pccb->cmdlen = 6;
	422	pccb->msgout[0] = SCSI_IDENTIFY; /* NOT USED */
	423	}
	424
0b3a58ee MS	425	/**
	426	* scsi_init_dev_desc_priv - initialize only SCSI specific blk_desc properties
	427	*
	428	* @dev_desc: Block device description pointer
	429	*/
	430	static void scsi_init_dev_desc_priv(struct blk_desc *dev_desc)
92ca476c MS	431	{
	432	dev_desc->target = 0xff;
	433	dev_desc->lun = 0xff;
92ca476c MS	434	dev_desc->log2blksz =
	435	LOG2_INVALID(typeof(dev_desc->log2blksz));
	436	dev_desc->type = DEV_TYPE_UNKNOWN;
	437	dev_desc->vendor[0] = 0;
	438	dev_desc->product[0] = 0;
	439	dev_desc->revision[0] = 0;
	440	dev_desc->removable = false;
92ca476c MS	441	#ifndef CONFIG_BLK
	442	dev_desc->block_read = scsi_read;
	443	dev_desc->block_write = scsi_write;
	444	#endif
	445	}
	446
0b3a58ee MS	447	/**
	448	* scsi_init_dev_desc - initialize all SCSI specific blk_desc properties
	449	*
	450	* @dev_desc: Block device description pointer
	451	* @devnum: Device number
	452	*/
	453	static void scsi_init_dev_desc(struct blk_desc *dev_desc, int devnum)
	454	{
	455	dev_desc->lba = 0;
	456	dev_desc->blksz = 0;
	457	dev_desc->if_type = IF_TYPE_SCSI;
	458	dev_desc->devnum = devnum;
	459	dev_desc->part_type = PART_TYPE_UNKNOWN;
	460
	461	scsi_init_dev_desc_priv(dev_desc);
	462	}
bccfd9e9	463
570712f4 MS	464	/**
	465	* scsi_detect_dev - Detect scsi device
	466	*
bccfd9e9	467	* @target: target id
570712f4	468	* @dev_desc: block device description
570712f4 MS	469	*
570712f4 MS	470	* The scsi_detect_dev detects and fills a dev_desc structure when the device is
4dbee176	471	* detected. The LUN number is taken from the struct blk_desc *dev_desc.
570712f4 MS	472	*
	473	* Return: 0 on success, error value otherwise
	474	*/
bccfd9e9	475	static int scsi_detect_dev(int target, struct blk_desc *dev_desc)
570712f4 MS	476	{
	477	unsigned char perq, modi;
	478	lbaint_t capacity;
	479	unsigned long blksz;
bccfd9e9	480	ccb pccb = (ccb )&tempccb;
570712f4	481
bccfd9e9	482	pccb->target = target;
4dbee176	483	pccb->lun = dev_desc->lun;
570712f4 MS	484	pccb->pdata = (unsigned char *)&tempbuff;
	485	pccb->datalen = 512;
	486	scsi_setup_inquiry(pccb);
	487	if (scsi_exec(pccb) != true) {
	488	if (pccb->contr_stat == SCSI_SEL_TIME_OUT) {
	489	/*
	490	* selection timeout => assuming no
	491	* device present
	492	*/
	493	debug("Selection timeout ID %d\n",
	494	pccb->target);
	495	return -ETIMEDOUT;
	496	}
	497	scsi_print_error(pccb);
	498	return -ENODEV;
	499	}
	500	perq = tempbuff[0];
	501	modi = tempbuff[1];
	502	if ((perq & 0x1f) == 0x1f)
	503	return -ENODEV; /* skip unknown devices */
	504	if ((modi & 0x80) == 0x80) /* drive is removable */
	505	dev_desc->removable = true;
	506	/* get info for this device */
	507	scsi_ident_cpy((unsigned char *)dev_desc->vendor,
	508	&tempbuff[8], 8);
	509	scsi_ident_cpy((unsigned char *)dev_desc->product,
	510	&tempbuff[16], 16);
	511	scsi_ident_cpy((unsigned char *)dev_desc->revision,
	512	&tempbuff[32], 4);
	513	dev_desc->target = pccb->target;
	514	dev_desc->lun = pccb->lun;
	515
	516	pccb->datalen = 0;
	517	scsi_setup_test_unit_ready(pccb);
	518	if (scsi_exec(pccb) != true) {
	519	if (dev_desc->removable) {
	520	dev_desc->type = perq;
	521	goto removable;
	522	}
	523	scsi_print_error(pccb);
	524	return -EINVAL;
	525	}
	526	if (scsi_read_capacity(pccb, &capacity, &blksz)) {
	527	scsi_print_error(pccb);
	528	return -EINVAL;
	529	}
	530	dev_desc->lba = capacity;
	531	dev_desc->blksz = blksz;
	532	dev_desc->log2blksz = LOG2(dev_desc->blksz);
	533	dev_desc->type = perq;
	534	part_init(&dev_desc[0]);
	535	removable:
	536	return 0;
	537	}
	538
11f610ed SG	539	/*
	540	* (re)-scan the scsi bus and reports scsi device info
	541	* to the user if mode = 1
	542	*/
c002e39a	543	int scsi_scan(int mode)
11f610ed	544	{
570712f4 MS	545	unsigned char i, lun;
570712f4 MS	546	int ret;
11f610ed SG	547
	548	if (mode == 1)
	549	printf("scanning bus for devices...\n");
92ca476c MS	550	for (i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++)
	551	scsi_init_dev_desc(&scsi_dev_desc[i], i);
	552
11f610ed SG	553	scsi_max_devs = 0;
11f610ed SG	554	for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
11f610ed	555	for (lun = 0; lun < CONFIG_SYS_SCSI_MAX_LUN; lun++) {
4dbee176	556	scsi_dev_desc[scsi_max_devs].lun = lun;
bccfd9e9	557	ret = scsi_detect_dev(i, &scsi_dev_desc[scsi_max_devs]);
570712f4	558	if (ret)
11f610ed	559	continue;
570712f4	560
11f610ed	561	if (mode == 1) {
570712f4	562	printf(" Device %d: ", 0);
11f610ed SG	563	dev_print(&scsi_dev_desc[scsi_max_devs]);
	564	} /* if mode */
	565	scsi_max_devs++;
	566	} /* next LUN */
	567	}
	568	if (scsi_max_devs > 0)
	569	scsi_curr_dev = 0;
	570	else
	571	scsi_curr_dev = -1;
	572
	573	printf("Found %d device(s).\n", scsi_max_devs);
	574	#ifndef CONFIG_SPL_BUILD
	575	setenv_ulong("scsidevs", scsi_max_devs);
	576	#endif
c002e39a	577	return 0;
11f610ed SG	578	}
11f610ed SG	579
535556b2 SG	580	#ifdef CONFIG_BLK
	581	static const struct blk_ops scsi_blk_ops = {
	582	.read = scsi_read,
	583	.write = scsi_write,
	584	};
	585
	586	U_BOOT_DRIVER(scsi_blk) = {
	587	.name = "scsi_blk",
	588	.id = UCLASS_BLK,
	589	.ops = &scsi_blk_ops,
	590	};
	591	#else
11f610ed	592	U_BOOT_LEGACY_BLK(scsi) = {
69c125fe	593	.if_typename = "scsi",
11f610ed SG	594	.if_type = IF_TYPE_SCSI,
	595	.max_devs = CONFIG_SYS_SCSI_MAX_DEVICE,
	596	.desc = scsi_dev_desc,
	597	};
535556b2	598	#endif