sata_sil24: replace sil24_update_tf() with sil24_read_tf()

Replace sil24_update_tf() to sil24_read_tf() which reads TF into
passed int result TF argument and can read TFs of PMP links.  This
will be used by PMP support.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 14 insertions, 9 deletions

diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index a11007b5071e..5f8afa950043 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -464,15 +464,15 @@ static void sil24_dev_config(struct ata_device *dev)
                 writel(PORT_CS_CDB16, port + PORT_CTRL_CLR);
 }
 
-static inline void sil24_update_tf(struct ata_port *ap)
+static void sil24_read_tf(struct ata_port *ap, int tag, struct ata_taskfile *tf)
 {
-        struct sil24_port_priv *pp = ap->private_data;
         void __iomem *port = ap->ioaddr.cmd_addr;
-        struct sil24_prb __iomem *prb = port;
+        struct sil24_prb __iomem *prb;
         u8 fis[6 * 4];
 
-        memcpy_fromio(fis, prb->fis, 6 * 4);
-        ata_tf_from_fis(fis, &pp->tf);
+        prb = port + PORT_LRAM + sil24_tag(tag) * PORT_LRAM_SLOT_SZ;
+        memcpy_fromio(fis, prb->fis, sizeof(fis));
+        ata_tf_from_fis(fis, tf);
 }
 
 static u8 sil24_check_status(struct ata_port *ap)
@@ -538,6 +538,7 @@ static int sil24_softreset(struct ata_port *ap, unsigned int *class,
         struct sil24_port_priv *pp = ap->private_data;
         struct sil24_prb *prb = &pp->cmd_block[0].ata.prb;
         dma_addr_t paddr = pp->cmd_block_dma;
+        struct ata_taskfile tf;
         u32 mask, irq_stat;
         const char *reason;
 
@@ -577,8 +578,8 @@ static int sil24_softreset(struct ata_port *ap, unsigned int *class,
                 goto err;
         }
 
-        sil24_update_tf(ap);
-        *class = ata_dev_classify(&pp->tf);
+        sil24_read_tf(ap, 0, &tf);
+        *class = ata_dev_classify(&tf);
 
         if (*class == ATA_DEV_UNKNOWN)
                 *class = ATA_DEV_NONE;
@@ -754,6 +755,7 @@ static void sil24_thaw(struct ata_port *ap)
 static void sil24_error_intr(struct ata_port *ap)
 {
         void __iomem *port = ap->ioaddr.cmd_addr;
+        struct sil24_port_priv *pp = ap->private_data;
         struct ata_eh_info *ehi = &ap->eh_info;
         int freeze = 0;
         u32 irq_stat;
@@ -808,7 +810,7 @@ static void sil24_error_intr(struct ata_port *ap)
                 /* record error info */
                 qc = ata_qc_from_tag(ap, ap->active_tag);
                 if (qc) {
-                        sil24_update_tf(ap);
+                        sil24_read_tf(ap, qc->tag, &pp->tf);
                         qc->err_mask |= err_mask;
                 } else
                         ehi->err_mask |= err_mask;
@@ -825,8 +827,11 @@ static void sil24_error_intr(struct ata_port *ap)
 
 static void sil24_finish_qc(struct ata_queued_cmd *qc)
 {
+        struct ata_port *ap = qc->ap;
+        struct sil24_port_priv *pp = ap->private_data;
+
         if (qc->flags & ATA_QCFLAG_RESULT_TF)
-                sil24_update_tf(qc->ap);
+                sil24_read_tf(ap, qc->tag, &pp->tf);
 }
 
 static inline void sil24_host_intr(struct ata_port *ap)