diff options
| author | Lendacky, Thomas <Thomas.Lendacky@amd.com> | 2014-07-02 13:04:57 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-07 21:38:06 -0700 |
| commit | cfa50c7811fe3857fd882be96b2b2f130fa5da6d (patch) | |
| tree | 261df2646726e81ebec132809f7afbbbbdaef01c /drivers/net/ethernet/amd/xgbe/xgbe-main.c | |
| parent | 9867e8fb2c45888cc594457914dcbba599f086c8 (diff) | |
amd-xgbe: Base AXI DMA cache settings on device tree
The default cache operations for ARM64 were changed during 3.15.
To use coherent operations a "dma-coherent" device tree property
is required. If that property is not present in the device tree
node then the non-coherent operations are assigned for the device.
Add support to the amd-xgbe driver to assign the AXI DMA cache settings
based on whether the "dma-coherent" property is present in the device
node. If present, use settings that work with the caches. If not
present, use settings that do not look at the caches.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/amd/xgbe/xgbe-main.c')
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-main.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-main.c b/drivers/net/ethernet/amd/xgbe/xgbe-main.c index b411ac557c47..d5a4f76e9474 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-main.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-main.c @@ -297,6 +297,16 @@ static int xgbe_probe(struct platform_device *pdev) *(dev->dma_mask) = DMA_BIT_MASK(40); dev->coherent_dma_mask = DMA_BIT_MASK(40); + if (of_property_read_bool(dev->of_node, "dma-coherent")) { + pdata->axdomain = XGBE_DMA_OS_AXDOMAIN; + pdata->arcache = XGBE_DMA_OS_ARCACHE; + pdata->awcache = XGBE_DMA_OS_AWCACHE; + } else { + pdata->axdomain = XGBE_DMA_SYS_AXDOMAIN; + pdata->arcache = XGBE_DMA_SYS_ARCACHE; + pdata->awcache = XGBE_DMA_SYS_AWCACHE; + } + ret = platform_get_irq(pdev, 0); if (ret < 0) { dev_err(dev, "platform_get_irq failed\n"); |