u-boot.git/include/linux/dma-mapping.h, branch master Unnamed repository; edit this file 'description' to name the repository. dma-mapping: Add header file for ARCH_DMA_MINALIGN 2020-06-02T17:06:11+00:00 Simon Glass sjg@chromium.org 2020-05-30T16:29:04+00:00 6d39fccc176051bd970f97df9bb7e578f9854677 This is defined in the asm/cache.h header file. Update this header file to include it. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com> Tested-by: Adam Ford <aford173@gmail.com> #da850-evm 
This is defined in the asm/cache.h header file. Update this header file to
include it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tested-by: Adam Ford <aford173@gmail.com> #da850-evm
dma-mapping: move dma_map_(un)single() to <linux/dma-mapping.h> 2020-02-19T13:27:30+00:00 Masahiro Yamada yamada.masahiro@socionext.com 2020-02-14T07:40:19+00:00 9d86b89c590832c9bcb1c69d5ccdecdf731f97ae The implementation of dma_map_single() and dma_unmap_single() is exactly the same for all the architectures that support them. Factor them out to <linux/dma-mapping.h>, and make all drivers to include <linux/dma-mapping.h> instead of <asm/dma-mapping.h>. If we need to differentiate them for some architectures, we can move the generic definitions to <asm-generic/dma-mapping.h>. Add some comments to the helpers. The concept is quite similar to the DMA-API of Linux kernel. Drivers are agnostic about what is going on behind the scene. Just call dma_map_single() before the DMA, and dma_unmap_single() after it. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> 
The implementation of dma_map_single() and dma_unmap_single() is
exactly the same for all the architectures that support them.

Factor them out to <linux/dma-mapping.h>, and make all drivers to
include <linux/dma-mapping.h> instead of <asm/dma-mapping.h>.

If we need to differentiate them for some architectures, we can
move the generic definitions to <asm-generic/dma-mapping.h>.

Add some comments to the helpers. The concept is quite similar to
the DMA-API of Linux kernel. Drivers are agnostic about what is
going on behind the scene. Just call dma_map_single() before the
DMA, and dma_unmap_single() after it.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>