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_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; }