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authorTejun Heo <htejun@gmail.com>2008-04-07 22:47:20 +0900
committerJeff Garzik <jgarzik@redhat.com>2008-04-17 15:44:23 -0400
commit4c9bf4e799ce06a7378f1196587084802a414c03 (patch)
tree70a7d3741e756b975468850537f222349143a0be /drivers/ata/ahci.c
parent79f97dadfe9b4b561634d202225ba2fa910dc225 (diff)
downloadop-kernel-dev-4c9bf4e799ce06a7378f1196587084802a414c03.zip
op-kernel-dev-4c9bf4e799ce06a7378f1196587084802a414c03.tar.gz
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.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 1389c64..ad5b6f3 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);
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