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libata: implement protocol tests

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Implement protocol tests - ata_is_atapi(), ata_is_nodata(),
ata_is_pio(), ata_is_dma(), ata_is_ncq() and ata_is_data() and use
them to replace is_atapi_taskfile() and hard coded protocol tests.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
2007-11-27 19:28:53 +09:00
committed by Jeff Garzik
parent f20ded38aa
commit 405e66b387
7 changed files with 82 additions and 65 deletions
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drivers/ata/libata-core.c
+7 -29
View File
@@ -5358,7 +5358,7 @@ static inline int ata_hsm_ok_in_wq(struct ata_port *ap, struct ata_queued_cmd *q
(qc->tf.flags & ATA_TFLAG_WRITE))
return 1;
if (is_atapi_taskfile(&qc->tf) &&
if (ata_is_atapi(qc->tf.protocol) &&
!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
return 1;
}
@@ -5955,30 +5955,6 @@ int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active,
return nr_done;
}
static inline int ata_should_dma_map(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
switch (qc->tf.protocol) {
case ATA_PROT_NCQ:
case ATA_PROT_DMA:
case ATA_PROT_ATAPI_DMA:
return 1;
case ATA_PROT_ATAPI:
case ATA_PROT_PIO:
if (ap->flags & ATA_FLAG_PIO_DMA)
return 1;
/* fall through */
default:
return 0;
}
/* never reached */
}
/**
* ata_qc_issue - issue taskfile to device
* @qc: command to issue to device
@@ -5995,6 +5971,7 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct ata_link *link = qc->dev->link;
u8 prot = qc->tf.protocol;
/* Make sure only one non-NCQ command is outstanding. The
* check is skipped for old EH because it reuses active qc to
@@ -6002,7 +5979,7 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
*/
WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag));
if (qc->tf.protocol == ATA_PROT_NCQ) {
if (prot == ATA_PROT_NCQ) {
WARN_ON(link->sactive & (1 << qc->tag));
if (!link->sactive)
@@ -6018,7 +5995,8 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
qc->flags |= ATA_QCFLAG_ACTIVE;
ap->qc_active |= 1 << qc->tag;
if (ata_should_dma_map(qc)) {
if (ata_is_dma(prot) || (ata_is_pio(prot) &&
(ap->flags & ATA_FLAG_PIO_DMA))) {
if (qc->flags & ATA_QCFLAG_SG) {
if (ata_sg_setup(qc))
goto sg_err;
@@ -6217,8 +6195,8 @@ inline unsigned int ata_host_intr(struct ata_port *ap,
*/
/* Check the ATA_DFLAG_CDB_INTR flag is enough here.
* The flag was turned on only for atapi devices.
* No need to check is_atapi_taskfile(&qc->tf) again.
* The flag was turned on only for atapi devices. No
* need to check ata_is_atapi(qc->tf.protocol) again.
*/
if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
goto idle_irq;