libata-sff: prd is BMDMA specific

struct ata_prd and ap->prd are BMDMA specific.  Add bmdma_ prefix to
them and move them inside CONFIG_ATA_SFF.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

9 files changed, 38 insertions, 35 deletions

diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index a58693bdde9d..6f52b598b8d2 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -2650,6 +2650,7 @@ EXPORT_SYMBOL_GPL(ata_bmdma32_port_ops);
 static void ata_bmdma_fill_sg(struct ata_queued_cmd *qc)
 {
         struct ata_port *ap = qc->ap;
+        struct ata_bmdma_prd *prd = ap->bmdma_prd;
         struct scatterlist *sg;
         unsigned int si, pi;
 
@@ -2671,8 +2672,8 @@ static void ata_bmdma_fill_sg(struct ata_queued_cmd *qc)
                         if ((offset + sg_len) > 0x10000)
                                 len = 0x10000 - offset;
 
-                        ap->prd[pi].addr = cpu_to_le32(addr);
-                        ap->prd[pi].flags_len = cpu_to_le32(len & 0xffff);
+                        prd[pi].addr = cpu_to_le32(addr);
+                        prd[pi].flags_len = cpu_to_le32(len & 0xffff);
                         VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", pi, addr, len);
 
                         pi++;
@@ -2681,7 +2682,7 @@ static void ata_bmdma_fill_sg(struct ata_queued_cmd *qc)
                 }
         }
 
-        ap->prd[pi - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
+        prd[pi - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
 }
 
 /**
@@ -2700,6 +2701,7 @@ static void ata_bmdma_fill_sg(struct ata_queued_cmd *qc)
 static void ata_bmdma_fill_sg_dumb(struct ata_queued_cmd *qc)
 {
         struct ata_port *ap = qc->ap;
+        struct ata_bmdma_prd *prd = ap->bmdma_prd;
         struct scatterlist *sg;
         unsigned int si, pi;
 
@@ -2722,16 +2724,16 @@ static void ata_bmdma_fill_sg_dumb(struct ata_queued_cmd *qc)
                                 len = 0x10000 - offset;
 
                         blen = len & 0xffff;
-                        ap->prd[pi].addr = cpu_to_le32(addr);
+                        prd[pi].addr = cpu_to_le32(addr);
                         if (blen == 0) {
                                 /* Some PATA chipsets like the CS5530 can't
                                    cope with 0x0000 meaning 64K as the spec
                                    says */
-                                ap->prd[pi].flags_len = cpu_to_le32(0x8000);
+                                prd[pi].flags_len = cpu_to_le32(0x8000);
                                 blen = 0x8000;
-                                ap->prd[++pi].addr = cpu_to_le32(addr + 0x8000);
+                                prd[++pi].addr = cpu_to_le32(addr + 0x8000);
                         }
-                        ap->prd[pi].flags_len = cpu_to_le32(blen);
+                        prd[pi].flags_len = cpu_to_le32(blen);
                         VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", pi, addr, len);
 
                         pi++;
@@ -2740,7 +2742,7 @@ static void ata_bmdma_fill_sg_dumb(struct ata_queued_cmd *qc)
                 }
         }
 
-        ap->prd[pi - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
+        prd[pi - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
 }
 
 /**
@@ -2872,7 +2874,7 @@ void ata_bmdma_setup(struct ata_queued_cmd *qc)
 
         /* load PRD table addr. */
         mb();   /* make sure PRD table writes are visible to controller */
-        iowrite32(ap->prd_dma, ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
+        iowrite32(ap->bmdma_prd_dma, ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
 
         /* specify data direction, triple-check start bit is clear */
         dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
@@ -2977,9 +2979,10 @@ EXPORT_SYMBOL_GPL(ata_bmdma_status);
 int ata_bmdma_port_start(struct ata_port *ap)
 {
         if (ap->mwdma_mask || ap->udma_mask) {
-                ap->prd = dmam_alloc_coherent(ap->host->dev, ATA_PRD_TBL_SZ,
-                                              &ap->prd_dma, GFP_KERNEL);
-                if (!ap->prd)
+                ap->bmdma_prd =
+                        dmam_alloc_coherent(ap->host->dev, ATA_PRD_TBL_SZ,
+                                            &ap->bmdma_prd_dma, GFP_KERNEL);
+                if (!ap->bmdma_prd)
                         return -ENOMEM;
         }
 
diff --git a/drivers/ata/pata_ns87415.c b/drivers/ata/pata_ns87415.c
index 830431f036a1..fdbba2d76d3e 100644
--- a/drivers/ata/pata_ns87415.c
+++ b/drivers/ata/pata_ns87415.c
@@ -126,7 +126,7 @@ static void ns87415_bmdma_setup(struct ata_queued_cmd *qc)
 
         /* load PRD table addr. */
         mb();   /* make sure PRD table writes are visible to controller */
-        iowrite32(ap->prd_dma, ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
+        iowrite32(ap->bmdma_prd_dma, ap->ioaddr.bmdma_addr + ATA_DMA_TABLE_OFS);
 
         /* specify data direction, triple-check start bit is clear */
         dmactl = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
diff --git a/drivers/ata/pata_scc.c b/drivers/ata/pata_scc.c
index 93f690e51a79..6f6193b707cb 100644
--- a/drivers/ata/pata_scc.c
+++ b/drivers/ata/pata_scc.c
@@ -441,7 +441,7 @@ static void scc_bmdma_setup (struct ata_queued_cmd *qc)
         void __iomem *mmio = ap->ioaddr.bmdma_addr;
 
         /* load PRD table addr */
-        out_be32(mmio + SCC_DMA_TABLE_OFS, ap->prd_dma);
+        out_be32(mmio + SCC_DMA_TABLE_OFS, ap->bmdma_prd_dma);
 
         /* specify data direction, triple-check start bit is clear */
         dmactl = in_be32(mmio + SCC_DMA_CMD);
@@ -905,7 +905,7 @@ static int scc_port_start (struct ata_port *ap)
         if (rc)
                 return rc;
 
-        out_be32(mmio + SCC_DMA_PTERADD, ap->prd_dma);
+        out_be32(mmio + SCC_DMA_PTERADD, ap->bmdma_prd_dma);
         return 0;
 }
 
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 7a283d5d68f3..4863a62c3d8c 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -272,7 +272,7 @@ enum ncq_saw_flag_list {
 };
 
 struct nv_swncq_port_priv {
-        struct ata_prd  *prd;    /* our SG list */
+        struct ata_bmdma_prd *prd;       /* our SG list */
         dma_addr_t      prd_dma; /* and its DMA mapping */
         void __iomem    *sactive_block;
         void __iomem    *irq_block;
@@ -2027,7 +2027,7 @@ static void nv_swncq_fill_sg(struct ata_queued_cmd *qc)
         struct ata_port *ap = qc->ap;
         struct scatterlist *sg;
         struct nv_swncq_port_priv *pp = ap->private_data;
-        struct ata_prd *prd;
+        struct ata_bmdma_prd *prd;
         unsigned int si, idx;
 
         prd = pp->prd + ATA_MAX_PRD * qc->tag;
diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c
index 09a6179f5de3..f03ad48273ff 100644
--- a/drivers/ata/sata_promise.c
+++ b/drivers/ata/sata_promise.c
@@ -500,7 +500,7 @@ static int pdc_sata_scr_write(struct ata_link *link,
 static void pdc_atapi_pkt(struct ata_queued_cmd *qc)
 {
         struct ata_port *ap = qc->ap;
-        dma_addr_t sg_table = ap->prd_dma;
+        dma_addr_t sg_table = ap->bmdma_prd_dma;
         unsigned int cdb_len = qc->dev->cdb_len;
         u8 *cdb = qc->cdb;
         struct pdc_port_priv *pp = ap->private_data;
@@ -588,6 +588,7 @@ static void pdc_atapi_pkt(struct ata_queued_cmd *qc)
 static void pdc_fill_sg(struct ata_queued_cmd *qc)
 {
         struct ata_port *ap = qc->ap;
+        struct ata_bmdma_prd *prd = ap->bmdma_prd;
         struct scatterlist *sg;
         const u32 SG_COUNT_ASIC_BUG = 41*4;
         unsigned int si, idx;
@@ -614,8 +615,8 @@ static void pdc_fill_sg(struct ata_queued_cmd *qc)
                         if ((offset + sg_len) > 0x10000)
                                 len = 0x10000 - offset;
 
-                        ap->prd[idx].addr = cpu_to_le32(addr);
-                        ap->prd[idx].flags_len = cpu_to_le32(len & 0xffff);
+                        prd[idx].addr = cpu_to_le32(addr);
+                        prd[idx].flags_len = cpu_to_le32(len & 0xffff);
                         VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len);
 
                         idx++;
@@ -624,27 +625,27 @@ static void pdc_fill_sg(struct ata_queued_cmd *qc)
                 }
         }
 
-        len = le32_to_cpu(ap->prd[idx - 1].flags_len);
+        len = le32_to_cpu(prd[idx - 1].flags_len);
 
         if (len > SG_COUNT_ASIC_BUG) {
                 u32 addr;
 
                 VPRINTK("Splitting last PRD.\n");
 
-                addr = le32_to_cpu(ap->prd[idx - 1].addr);
-                ap->prd[idx - 1].flags_len = cpu_to_le32(len - SG_COUNT_ASIC_BUG);
+                addr = le32_to_cpu(prd[idx - 1].addr);
+                prd[idx - 1].flags_len = cpu_to_le32(len - SG_COUNT_ASIC_BUG);
                 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx - 1, addr, SG_COUNT_ASIC_BUG);
 
                 addr = addr + len - SG_COUNT_ASIC_BUG;
                 len = SG_COUNT_ASIC_BUG;
-                ap->prd[idx].addr = cpu_to_le32(addr);
-                ap->prd[idx].flags_len = cpu_to_le32(len);
+                prd[idx].addr = cpu_to_le32(addr);
+                prd[idx].flags_len = cpu_to_le32(len);
                 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len);
 
                 idx++;
         }
 
-        ap->prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
+        prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
 }
 
 static void pdc_qc_prep(struct ata_queued_cmd *qc)
@@ -659,7 +660,7 @@ static void pdc_qc_prep(struct ata_queued_cmd *qc)
                 pdc_fill_sg(qc);
                 /*FALLTHROUGH*/
         case ATA_PROT_NODATA:
-                i = pdc_pkt_header(&qc->tf, qc->ap->prd_dma,
+                i = pdc_pkt_header(&qc->tf, qc->ap->bmdma_prd_dma,
                                    qc->dev->devno, pp->pkt);
                 if (qc->tf.flags & ATA_TFLAG_LBA48)
                         i = pdc_prep_lba48(&qc->tf, pp->pkt, i);
diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c
index 9c367f71c627..2dda312b6b9a 100644
--- a/drivers/ata/sata_sil.c
+++ b/drivers/ata/sata_sil.c
@@ -284,7 +284,7 @@ static void sil_bmdma_setup(struct ata_queued_cmd *qc)
         void __iomem *bmdma = ap->ioaddr.bmdma_addr;
 
         /* load PRD table addr. */
-        iowrite32(ap->prd_dma, bmdma + ATA_DMA_TABLE_OFS);
+        iowrite32(ap->bmdma_prd_dma, bmdma + ATA_DMA_TABLE_OFS);
 
         /* issue r/w command */
         ap->ops->sff_exec_command(ap, &qc->tf);
@@ -311,10 +311,10 @@ static void sil_fill_sg(struct ata_queued_cmd *qc)
 {
         struct scatterlist *sg;
         struct ata_port *ap = qc->ap;
-        struct ata_prd *prd, *last_prd = NULL;
+        struct ata_bmdma_prd *prd, *last_prd = NULL;
         unsigned int si;
 
-        prd = &ap->prd[0];
+        prd = &ap->bmdma_prd[0];
         for_each_sg(qc->sg, sg, qc->n_elem, si) {
                 /* Note h/w doesn't support 64-bit, so we unconditionally
                  * truncate dma_addr_t to u32.
diff --git a/drivers/ata/sata_svw.c b/drivers/ata/sata_svw.c
index 7257f2d5c52c..101fd6a19829 100644
--- a/drivers/ata/sata_svw.c
+++ b/drivers/ata/sata_svw.c
@@ -224,7 +224,7 @@ static void k2_bmdma_setup_mmio(struct ata_queued_cmd *qc)
 
         /* load PRD table addr. */
         mb();   /* make sure PRD table writes are visible to controller */
-        writel(ap->prd_dma, mmio + ATA_DMA_TABLE_OFS);
+        writel(ap->bmdma_prd_dma, mmio + ATA_DMA_TABLE_OFS);
 
         /* specify data direction, triple-check start bit is clear */
         dmactl = readb(mmio + ATA_DMA_CMD);
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 700c5b9b3583..fe6e681a9d74 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -467,7 +467,7 @@ enum ata_ioctls {
 
 /* core structures */
 
-struct ata_prd {
+struct ata_bmdma_prd {
         __le32                  addr;
         __le32                  flags_len;
 };
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 3675fd29b2e5..d973972f0db2 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -716,14 +716,13 @@ struct ata_port {
         unsigned int            print_id; /* user visible unique port ID */
         unsigned int            port_no; /* 0 based port no. inside the host */
 
-        struct ata_prd          *prd;    /* our SG list */
-        dma_addr_t              prd_dma; /* and its DMA mapping */
-
 #ifdef CONFIG_ATA_SFF
         struct ata_ioports      ioaddr; /* ATA cmd/ctl/dma register blocks */
         u8                      ctl;    /* cache of ATA control register */
         u8                      last_ctl;       /* Cache last written value */
         struct delayed_work     sff_pio_task;
+        struct ata_bmdma_prd    *bmdma_prd;     /* BMDMA SG list */
+        dma_addr_t              bmdma_prd_dma;  /* and its DMA mapping */
 #endif /* CONFIG_ATA_SFF */
 
         unsigned int            pio_mask;