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libata-sff: prd is BMDMA specific

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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>
This commit is contained in:
Tejun Heo 2010-05-10 21:41:41 +02:00 • committed by Jeff Garzik
parent f47451c45f
commit f60d70113f
9 changed files with 38 additions and 35 deletions
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27
drivers/ata/libata-sff.c
View file

@ -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;
}