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 | 4c9bf4e799ce06a7378f1196587084802a414c03 (patch) | |
| tree | 70a7d3741e756b975468850537f222349143a0be /drivers/ata/ahci.c | |
| parent | 79f97dadfe9b4b561634d202225ba2fa910dc225 (diff) | |
libata: replace tf_read with qc_fill_rtf for non-SFF drivers
Now that all SFF stuff is separated out of core layer, core layer
doesn't call ops->tf_read directly. It gets called only via
ops->qc_fill_rtf() for non-SFF drivers. This patch directly
implements private ops->qc_fill_rtf() for non-SFF controllers and kill
ops->tf_read().
This is much cleaner for non-SFF controllers as some of them have to
cache SFF register values in private data structure and report the
cached values via ops->tf_read(). Also, ops->tf_read() gets nasty for
controllers which don't have clear notion of TF registers when
operation is not in progress.
As this change makes default ops->qc_fill_rtf unnecessary, move
ata_sff_qc_fill_rtf() form ata_base_port_ops to ata_sff_port_ops where
it belongs.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 1389c64e0027..ad5b6f384ba1 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -243,9 +243,9 @@ static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val); static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val); static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc); +static bool ahci_qc_fill_rtf(struct ata_queued_cmd *qc); static int ahci_port_start(struct ata_port *ap); static void ahci_port_stop(struct ata_port *ap); -static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf); static void ahci_qc_prep(struct ata_queued_cmd *qc); static u8 ahci_check_status(struct ata_port *ap); static void ahci_freeze(struct ata_port *ap); @@ -295,10 +295,10 @@ static struct ata_port_operations ahci_ops = { .sff_check_status = ahci_check_status, .sff_check_altstatus = ahci_check_status, - .sff_tf_read = ahci_tf_read, .qc_defer = sata_pmp_qc_defer_cmd_switch, .qc_prep = ahci_qc_prep, .qc_issue = ahci_qc_issue, + .qc_fill_rtf = ahci_qc_fill_rtf, .freeze = ahci_freeze, .thaw = ahci_thaw, @@ -1473,14 +1473,6 @@ static u8 ahci_check_status(struct ata_port *ap) return readl(mmio + PORT_TFDATA) & 0xFF; } -static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf) -{ - struct ahci_port_priv *pp = ap->private_data; - u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; - - ata_tf_from_fis(d2h_fis, tf); -} - static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl) { struct scatterlist *sg; @@ -1779,6 +1771,15 @@ static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc) return 0; } +static bool ahci_qc_fill_rtf(struct ata_queued_cmd *qc) +{ + struct ahci_port_priv *pp = qc->ap->private_data; + u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; + + ata_tf_from_fis(d2h_fis, &qc->result_tf); + return true; +} + static void ahci_freeze(struct ata_port *ap) { void __iomem *port_mmio = ahci_port_base(ap); |