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[libata] ahci: finish ATAPI support (hopefully)

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This commit is contained in:
Jeff Garzik 2005-06-04 01:13:15 -04:00
parent 70c8523381
commit a0ea7328e3
1 changed files with 8 additions and 12 deletions
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20
drivers/scsi/ahci.c
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@ -50,6 +50,7 @@ enum {
AHCI_CMD_SLOT_SZ = 32 * 32,
AHCI_RX_FIS_SZ = 256,
AHCI_CMD_TBL_HDR = 0x80,
AHCI_CMD_TBL_CDB = 0x40,
AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR + (AHCI_MAX_SG * 16),
AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_SZ +
AHCI_RX_FIS_SZ,
@ -510,7 +511,8 @@ static void ahci_fill_sg(struct ata_queued_cmd *qc)
static void ahci_qc_prep(struct ata_queued_cmd *qc)
{
struct ahci_port_priv *pp = qc->ap->private_data;
struct ata_port *ap = qc->ap;
struct ahci_port_priv *pp = ap->private_data;
u32 opts;
const u32 cmd_fis_len = 5; /* five dwords */
@ -522,18 +524,8 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc)
opts = (qc->n_elem << 16) | cmd_fis_len;
if (qc->tf.flags & ATA_TFLAG_WRITE)
opts |= AHCI_CMD_WRITE;
switch (qc->tf.protocol) {
case ATA_PROT_ATAPI:
case ATA_PROT_ATAPI_NODATA:
case ATA_PROT_ATAPI_DMA:
if (is_atapi_taskfile(&qc->tf))
opts |= AHCI_CMD_ATAPI;
break;
default:
/* do nothing */
break;
}
pp->cmd_slot[0].opts = cpu_to_le32(opts);
pp->cmd_slot[0].status = 0;
@ -545,6 +537,10 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc)
* a SATA Register - Host to Device command FIS.
*/
ata_tf_to_fis(&qc->tf, pp->cmd_tbl, 0);
if (opts & AHCI_CMD_ATAPI) {
memset(pp->cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
memcpy(pp->cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, ap->cdb_len);
}
if (!(qc->flags & ATA_QCFLAG_DMAMAP))
return;