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| 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/sata_fsl.c | |
| parent | 79f97dadfe9b4b561634d202225ba2fa910dc225 (diff) | |
| download | lwn-4c9bf4e799ce06a7378f1196587084802a414c03.tar.gz lwn-4c9bf4e799ce06a7378f1196587084802a414c03.zip | |
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/sata_fsl.c')
| -rw-r--r-- | drivers/ata/sata_fsl.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index 37482d4e883f..e880b7ec060f 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -464,6 +464,20 @@ static unsigned int sata_fsl_qc_issue(struct ata_queued_cmd *qc) return 0; } +static bool sata_fsl_qc_fill_rtf(struct ata_queued_cmd *qc) +{ + struct sata_fsl_port_priv *pp = qc->ap->private_data; + struct sata_fsl_host_priv *host_priv = qc->ap->host->private_data; + void __iomem *hcr_base = host_priv->hcr_base; + unsigned int tag = sata_fsl_tag(qc->tag, hcr_base); + struct command_desc *cd; + + cd = pp->cmdentry + tag; + + ata_tf_from_fis(cd->sfis, &qc->result_tf); + return true; +} + static int sata_fsl_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val) { @@ -580,13 +594,6 @@ static u8 sata_fsl_check_status(struct ata_port *ap) return pp->tf.command; } -static void sata_fsl_tf_read(struct ata_port *ap, struct ata_taskfile *tf) -{ - struct sata_fsl_port_priv *pp = ap->private_data; - - *tf = pp->tf; -} - static int sata_fsl_port_start(struct ata_port *ap) { struct device *dev = ap->host->dev; @@ -1193,10 +1200,9 @@ static const struct ata_port_operations sata_fsl_ops = { .sff_check_status = sata_fsl_check_status, .sff_check_altstatus = sata_fsl_check_status, - .sff_tf_read = sata_fsl_tf_read, - .qc_prep = sata_fsl_qc_prep, .qc_issue = sata_fsl_qc_issue, + .qc_fill_rtf = sata_fsl_qc_fill_rtf, .scr_read = sata_fsl_scr_read, .scr_write = sata_fsl_scr_write, |