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net: davinci_emac:Fix translation logic for buffer descriptor

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With recent changes to the driver(switch to new cpdma layer),
the support for buffer descriptor address translation logic
is broken. This affects platforms where the physical address of
the descriptors as seen by the DMA engine is different from the
physical address.

Original Patch adding translation logic support:
Commit: ad021ae886

Signed-off-by: Sriramakrishnan A G <srk@ti.com>
Tested-By: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sriram
2011-03-22 02:31:03 +00:00
committed by David S. Miller
parent 9c7a4f9ce6
commit 6a1fef6d00
4 changed files with 14 additions and 4 deletions
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drivers/net/davinci_emac.c
+4 -1
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@@ -1854,10 +1854,13 @@ static int __devinit davinci_emac_probe(struct platform_device *pdev)
dma_params.rxcp = priv->emac_base + 0x660;
dma_params.num_chan = EMAC_MAX_TXRX_CHANNELS;
dma_params.min_packet_size = EMAC_DEF_MIN_ETHPKTSIZE;
dma_params.desc_mem_phys = hw_ram_addr;
dma_params.desc_hw_addr = hw_ram_addr;
dma_params.desc_mem_size = pdata->ctrl_ram_size;
dma_params.desc_align = 16;
dma_params.desc_mem_phys = pdata->no_bd_ram ? 0 :
(u32 __force)res->start + pdata->ctrl_ram_offset;
priv->dma = cpdma_ctlr_create(&dma_params);
if (!priv->dma) {
dev_err(emac_dev, "DaVinci EMAC: Error initializing DMA\n");