summaryrefslogtreecommitdiffstats
path: root/drivers/ata
diff options
context:
space:
mode:
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2016-04-26 12:03:18 +0300
committerTejun Heo <tj@kernel.org>2016-05-12 10:53:51 -0400
commitd6ecf0c27d71666a4be46e13a1b234d17c63eb98 (patch)
tree5ff54c23fa8920be516b604b5c6f141da378424a /drivers/ata
parent73ec1b5ab3a713141318ee845d8b0cc822db65b1 (diff)
downloadlinux-d6ecf0c27d71666a4be46e13a1b234d17c63eb98.tar.bz2
ata: sata_dwc_460ex: supply physical address of FIFO to DMA
DMA operates with physical addresses which is not exactly the same as ioremap() returns. Introduce variable to keep physical address of the SATA FIFO register and supply it when prepare DMA channel. Tested-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/sata_dwc_460ex.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
index aaff5e85c35c..6f145f8ae312 100644
--- a/drivers/ata/sata_dwc_460ex.c
+++ b/drivers/ata/sata_dwc_460ex.c
@@ -95,7 +95,7 @@ struct sata_dwc_regs {
u32 versionr; /* Version Register */
u32 idr; /* ID Register */
u32 unimpl[192]; /* Unimplemented */
- u32 dmadr[256]; /* FIFO Locations in DMA Mode */
+ u32 dmadr[256]; /* FIFO Locations in DMA Mode */
};
enum {
@@ -143,6 +143,7 @@ struct sata_dwc_device {
u32 sactive_issued;
u32 sactive_queued;
struct phy *phy;
+ phys_addr_t dmadr;
#ifdef CONFIG_SATA_DWC_OLD_DMA
struct dw_dma_chip *dma;
#endif
@@ -368,15 +369,14 @@ static struct dma_async_tx_descriptor *dma_dwc_xfer_setup(struct ata_queued_cmd
struct ata_port *ap = qc->ap;
struct sata_dwc_device_port *hsdevp = HSDEVP_FROM_AP(ap);
struct sata_dwc_device *hsdev = HSDEV_FROM_AP(ap);
- dma_addr_t addr = (dma_addr_t)&hsdev->sata_dwc_regs->dmadr;
struct dma_slave_config sconf;
struct dma_async_tx_descriptor *desc;
if (qc->dma_dir == DMA_DEV_TO_MEM) {
- sconf.src_addr = addr;
+ sconf.src_addr = hsdev->dmadr;
sconf.device_fc = false;
} else { /* DMA_MEM_TO_DEV */
- sconf.dst_addr = addr;
+ sconf.dst_addr = hsdev->dmadr;
sconf.device_fc = false;
}
@@ -399,8 +399,8 @@ static struct dma_async_tx_descriptor *dma_dwc_xfer_setup(struct ata_queued_cmd
desc->callback = dma_dwc_xfer_done;
desc->callback_param = hsdev;
- dev_dbg(hsdev->dev, "%s sg: 0x%p, count: %d addr: %pad\n",
- __func__, qc->sg, qc->n_elem, &addr);
+ dev_dbg(hsdev->dev, "%s sg: 0x%p, count: %d addr: %pa\n", __func__,
+ qc->sg, qc->n_elem, &hsdev->dmadr);
return desc;
}
@@ -1234,6 +1234,7 @@ static int sata_dwc_probe(struct platform_device *ofdev)
/* Synopsys DWC SATA specific Registers */
hsdev->sata_dwc_regs = base + SATA_DWC_REG_OFFSET;
+ hsdev->dmadr = res->start + SATA_DWC_REG_OFFSET + offsetof(struct sata_dwc_regs, dmadr);
/* Setup port */
host->ports[0]->ioaddr.cmd_addr = base;