amd-xgbe: Base AXI DMA cache settings on device tree
authorLendacky, Thomas <Thomas.Lendacky@amd.com>
Wed, 2 Jul 2014 18:04:57 +0000 (13:04 -0500)
committerDavid S. Miller <davem@davemloft.net>
Tue, 8 Jul 2014 04:38:06 +0000 (21:38 -0700)
commitcfa50c7811fe3857fd882be96b2b2f130fa5da6d
tree261df2646726e81ebec132809f7afbbbbdaef01c
parent9867e8fb2c45888cc594457914dcbba599f086c8
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>
drivers/net/ethernet/amd/xgbe/xgbe-dev.c
drivers/net/ethernet/amd/xgbe/xgbe-main.c
drivers/net/ethernet/amd/xgbe/xgbe.h