diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2016-04-26 11:03:18 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2016-05-12 16:53:51 +0200 |
| commit | d6ecf0c27d71666a4be46e13a1b234d17c63eb98 (patch) | |
| tree | 5ff54c23fa8920be516b604b5c6f141da378424a /drivers/ata | |
| parent | ata: sata_dwc_460ex: use devm_ioremap (diff) | |
| download | linux-d6ecf0c27d71666a4be46e13a1b234d17c63eb98.tar.xz linux-d6ecf0c27d71666a4be46e13a1b234d17c63eb98.zip | |
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.c | 13 |
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; |