Whitebox
/
u-boot
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

scsi: Simplify scsi_read/scsi_write()

Browse Source 
There is no reason to directly point to static allocated array
when we have proper block_dev pointer available via parameter
in !CONFIG_BLK. For CONFIG_BLK this is read directly from uclass
platdata.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
master
Michal Simek 8 years ago
parent bccfd9e967
commit cdb93b276b
1 changed files with 11 additions and 16 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 27
      common/scsi.c

27
common/scsi.c
Unescape View File

@ -161,43 +161,41 @@ static ulong scsi_read(struct blk_desc *block_dev, lbaint_t blknr,
#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;
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",
device, start, blks, (unsigned long)buffer);
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 = scsi_dev_desc[device].blksz * blocks;
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 = scsi_dev_desc[device].blksz *
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 = scsi_dev_desc[device].blksz * blks;
pccb->datalen = block_dev->blksz * blks;
smallblks = (unsigned short)blks;
scsi_setup_read_ext(pccb, start, smallblks);
start += blks;
@ -236,33 +234,30 @@ static ulong scsi_write(struct blk_desc *block_dev, lbaint_t blknr,
#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;
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__, device, start, blks, (unsigned long)buffer);
__func__, block_dev->devnum, 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 *
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 = scsi_dev_desc[device].blksz * blks;
pccb->datalen = block_dev->blksz * blks;
smallblks = (unsigned short)blks;
scsi_setup_write_ext(pccb, start, smallblks);
start += blks;

Write Preview
Loading…
Cancel
Save