From e93176d55f1eb4be1a366b51afeaf4f4c8c31d75 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Wed, 5 Sep 2012 18:00:57 +0200 Subject: scsi-disk: use scsi_data_cdb_length This simplifies and unifies the parsing of READ, WRITE and WRITE SAME commands. Signed-off-by: Paolo Bonzini --- hw/scsi-disk.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) (limited to 'hw/scsi-disk.c') diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c index d621852857..4ffca7aae5 100644 --- a/hw/scsi-disk.c +++ b/hw/scsi-disk.c @@ -1808,11 +1808,8 @@ static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf) DPRINTF("Unmap (len %lu)\n", (long)r->req.cmd.xfer); break; case WRITE_SAME_10: - nb_sectors = lduw_be_p(&req->cmd.buf[7]); - goto write_same; case WRITE_SAME_16: - nb_sectors = ldl_be_p(&req->cmd.buf[10]) & 0xffffffffULL; - write_same: + nb_sectors = scsi_data_cdb_length(r->req.cmd.buf); if (bdrv_is_read_only(s->qdev.conf.bs)) { scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED)); return 0; @@ -1872,7 +1869,7 @@ static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf) { SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); - int32_t len; + uint32_t len; uint8_t command; command = buf[0]; @@ -1882,13 +1879,13 @@ static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf) return 0; } + len = scsi_data_cdb_length(r->req.cmd.buf); switch (command) { case READ_6: case READ_10: case READ_12: case READ_16: - len = r->req.cmd.xfer / s->qdev.blocksize; - DPRINTF("Read (sector %" PRId64 ", count %d)\n", r->req.cmd.lba, len); + DPRINTF("Read (sector %" PRId64 ", count %u)\n", r->req.cmd.lba, len); if (r->req.cmd.buf[1] & 0xe0) { goto illegal_request; } @@ -1913,8 +1910,7 @@ static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf) case VERIFY_10: case VERIFY_12: case VERIFY_16: - len = r->req.cmd.xfer / s->qdev.blocksize; - DPRINTF("Write %s(sector %" PRId64 ", count %d)\n", + DPRINTF("Write %s(sector %" PRId64 ", count %u)\n", (command & 0xe) == 0xe ? "And Verify " : "", r->req.cmd.lba, len); if (r->req.cmd.buf[1] & 0xe0) { -- cgit v1.2.3