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authorVinod Koul <vinod.koul@intel.com>2016-02-15 19:57:02 +0300
committerVinod Koul <vinod.koul@intel.com>2016-02-22 18:52:40 +0300
commit9575632052bacc2fda38d845eb17b0fb808e13eb (patch)
tree413a361ba3fb07d1245b2406a9d2ac358ea1823a /include/linux/dmaengine.h
parent92e963f50fc74041b5e9e744c330dca48e04f08d (diff)
downloadlinux-9575632052bacc2fda38d845eb17b0fb808e13eb.tar.xz
dmaengine: make slave address physical
The slave dmaengine semantics required the client to map dma addresses and pass DMA address to dmaengine drivers. This was a convenient notion coming from generic dma offload cases where dmaengines are interchangeable and client is not aware of which engine to map to. But in case of slave, we know the dmaengine and always use a specific one. Further the IOMMU cases can lead to failure of this notion, so make this as physical address and now dmaengine driver will do the required mapping. Original-patch-by: Linus Walleij <linus.walleij@linaro.org> Original-patch-Acked-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include/linux/dmaengine.h')
-rw-r--r--include/linux/dmaengine.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 16a1cad30c33..d85ecd20af50 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -357,8 +357,8 @@ enum dma_slave_buswidth {
*/
struct dma_slave_config {
enum dma_transfer_direction direction;
- dma_addr_t src_addr;
- dma_addr_t dst_addr;
+ phys_addr_t src_addr;
+ phys_addr_t dst_addr;
enum dma_slave_buswidth src_addr_width;
enum dma_slave_buswidth dst_addr_width;
u32 src_maxburst;