diff options
| author | Tejun Heo <htejun@gmail.com> | 2008-04-07 22:47:20 +0900 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-04-17 15:44:23 -0400 |
| commit | 22183bf569c8600ff414ac25f23134044e0ef453 (patch) | |
| tree | 1dea79cdbe439637477e1c4214b600b6823cb866 /include | |
| parent | 305d2a1ab137d11d573319c315748a87060fe82d (diff) | |
libata: add qc_fill_rtf port operation
On command completion, ata_qc_complete() directly called ops->tf_read
to fill qc->result_tf. This patch adds ops->qc_fill_rtf to replace
hardcoded ops->tf_read usage.
ata_sff_qc_fill_rtf() which uses ops->tf_read to fill result_tf is
implemented and set in ata_base_port_ops and other ops tables which
don't inherit from ata_base_port_ops, so this patch doesn't introduce
any behavior change.
ops->qc_fill_rtf() is similar to ops->sff_tf_read() but can only be
called when a command finishes. As some non-SFF controllers don't
have TF registers defined unless they're associated with in-flight
commands, this limited operation makes life easier for those drivers
and help lifting SFF assumptions from libata core layer.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/libata.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index 2b5a0b77e17..bb4200d42f0 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -715,6 +715,7 @@ struct ata_port_operations { int (*check_atapi_dma)(struct ata_queued_cmd *qc); void (*qc_prep)(struct ata_queued_cmd *qc); unsigned int (*qc_issue)(struct ata_queued_cmd *qc); + bool (*qc_fill_rtf)(struct ata_queued_cmd *qc); /* * Configuration and exception handling @@ -1385,6 +1386,7 @@ extern void ata_sff_irq_clear(struct ata_port *ap); extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc, u8 status, int in_wq); extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc); +extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc); extern unsigned int ata_sff_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance); |