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;
}
static ulong scsi_read(block_dev_desc_t *block_dev, lbaint_t blknr,
lbaint_t blkcnt, void *buffer)
{
int device = block_dev->dev;
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);
}
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;
}
static ulong scsi_read(int device, ulong blknr, lbaint_t blkcnt, void *buffer)
{
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("\nscsi_read: dev %d startblk " LBAF
", blccnt " LBAF " buffer %lx\n",
device, start, blks, (unsigned long)buffer);
do {
pccb->pdata=(unsigned char *)buf_addr;
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 %x\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 %x\n", start, smallblks, buf_addr);
return(blkcnt);
}
static ulong scsi_write(block_dev_desc_t *block_dev, lbaint_t blknr,
lbaint_t blkcnt, const void *buffer)
{
int device = block_dev->dev;
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;
}
/**
* 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;
}
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;
}
/*********************************************************************************
* (re)-scan the scsi bus and reports scsi device info
* to the user if mode = 1
*/
void scsi_scan(int mode)
{
unsigned char i,perq,modi,lun;
lbaint_t capacity;
unsigned long blksz;
ccb* pccb=(ccb *)&tempccb;
if(mode==1) {
printf("scanning bus for devices...\n");
}
for(i=0;i<CONFIG_SYS_SCSI_MAX_DEVICE;i++) {
scsi_dev_desc[i].target=0xff;
scsi_dev_desc[i].lun=0xff;
scsi_dev_desc[i].lba=0;
scsi_dev_desc[i].blksz=0;
scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
scsi_dev_desc[i].vendor[0]=0;
scsi_dev_desc[i].product[0]=0;
scsi_dev_desc[i].revision[0]=0;
scsi_dev_desc[i].removable=FALSE;
scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
scsi_dev_desc[i].dev=i;
scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
scsi_dev_desc[i].block_read=scsi_read;
scsi_dev_desc[i].block_write = scsi_write;
}
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++) {
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) {
debug ("Selection timeout ID %d\n",pccb->target);
continue; /* selection timeout => assuming no device present */
}
/* Device present at this target/lun
* but may not be ready yet.
*/
scsi_print_error(pccb);
continue;
}
perq=tempbuff[0];
modi=tempbuff[1];
if((perq & 0x1f)==0x1f) {
continue; /* skip unknown devices */
}
if((modi&0x80)==0x80) /* drive is removable */
scsi_dev_desc[scsi_max_devs].removable=TRUE;
/* get info for this device */
scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
&tempbuff[8], 8);
scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
&tempbuff[16], 16);
scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
&tempbuff[32], 4);
scsi_dev_desc[scsi_max_devs].target=pccb->target;
scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
pccb->datalen=0;
scsi_setup_test_unit_ready(pccb);
if(scsi_exec(pccb)!=TRUE) {
if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
scsi_dev_desc[scsi_max_devs].type=perq;
goto removable;
}
scsi_print_error(pccb);
continue;
}
if (scsi_read_capacity(pccb, &capacity, &blksz)) {
scsi_print_error(pccb);
continue;
}
scsi_dev_desc[scsi_max_devs].lba=capacity;
scsi_dev_desc[scsi_max_devs].blksz=blksz;
scsi_dev_desc[scsi_max_devs].type=perq;
init_part(&scsi_dev_desc[scsi_max_devs]);
removable:
if(mode==1) {
printf (" Device %d: ", scsi_max_devs);
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);
}
/*********************************************************************************
* (re)-scan the scsi bus and reports scsi device info
* to the user if mode = 1
*/
void scsi_scan(int mode)
{
unsigned char i,perq,modi,lun;
lbaint_t capacity;
unsigned long blksz;
ccb* pccb=(ccb *)&tempccb;
static int scsi_detected = 0;
if (scsi_detected) {
printf("** scsi detection can run only once - please");
printf(" reset board before running detection again **\n");
return;
}
scsi_detected = 1;
if(mode==1) {
printf("scanning bus for devices...\n");
}
if (tempbuff == NULL) {
tempbuff = memalign(ARCH_DMA_MINALIGN, 512);
if (tempbuff == NULL) {
if (mode == 1)
printf("error: cannot allocate buffer\n");
return;
}
}
for(i = 0; i < CONFIG_SYS_SCSI_MAX_DEVICE; i++) {
scsi_dev_desc[i].target=0xff;
scsi_dev_desc[i].lun=0xff;
scsi_dev_desc[i].lba=0;
scsi_dev_desc[i].blksz=0;
scsi_dev_desc[i].log2blksz =
LOG2_INVALID(typeof(scsi_dev_desc[i].log2blksz));
scsi_dev_desc[i].type=DEV_TYPE_UNKNOWN;
scsi_dev_desc[i].vendor[0]=0;
scsi_dev_desc[i].product[0]=0;
scsi_dev_desc[i].revision[0]=0;
scsi_dev_desc[i].removable=FALSE;
scsi_dev_desc[i].if_type=IF_TYPE_SCSI;
scsi_dev_desc[i].dev=i;
scsi_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
scsi_dev_desc[i].block_read=scsi_read;
scsi_dev_desc[i].block_write = scsi_write;
}
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++) {
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) {
debug ("Selection timeout ID %d\n",pccb->target);
continue; /* selection timeout => assuming no device present */
}
scsi_print_error(pccb);
continue;
}
perq=tempbuff[0];
modi=tempbuff[1];
if((perq & 0x1f)==0x1f) {
continue; /* skip unknown devices */
}
if((modi&0x80)==0x80) /* drive is removable */
scsi_dev_desc[scsi_max_devs].removable=TRUE;
/* get info for this device */
scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].vendor[0],
&tempbuff[8], 8);
scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].product[0],
&tempbuff[16], 16);
scsi_ident_cpy((unsigned char *)&scsi_dev_desc[scsi_max_devs].revision[0],
&tempbuff[32], 4);
scsi_dev_desc[scsi_max_devs].target=pccb->target;
scsi_dev_desc[scsi_max_devs].lun=pccb->lun;
pccb->datalen=0;
scsi_setup_test_unit_ready(pccb);
if(scsi_exec(pccb)!=TRUE) {
if(scsi_dev_desc[scsi_max_devs].removable==TRUE) {
scsi_dev_desc[scsi_max_devs].type=perq;
goto removable;
}
scsi_print_error(pccb);
continue;
}
if (scsi_read_capacity(pccb, &capacity, &blksz)) {
scsi_print_error(pccb);
continue;
}
scsi_dev_desc[scsi_max_devs].lba=capacity;
scsi_dev_desc[scsi_max_devs].blksz=blksz;
scsi_dev_desc[scsi_max_devs].log2blksz =
LOG2(scsi_dev_desc[scsi_max_devs].blksz);
scsi_dev_desc[scsi_max_devs].type=perq;
init_part(&scsi_dev_desc[scsi_max_devs]);
removable:
if(mode==1) {
printf (" Device %d: ", scsi_max_devs);
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);
setenv_ulong("scsidevs", scsi_max_devs);
}
