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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-08-20 11:19:25 +0200 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-08-28 21:01:02 +0200 |
| commit | 6e5267aa543817015edb4a65c66e15f9809f92bd (patch) | |
| tree | 9ec9d3d3003a0fc341856b81f0f2b30476daa51e /arch/arm/include | |
| parent | e092705bcd53de3bafc3053b0b55bf83e5d6711f (diff) | |
| download | linux-6e5267aa543817015edb4a65c66e15f9809f92bd.tar.gz linux-6e5267aa543817015edb4a65c66e15f9809f92bd.tar.bz2 linux-6e5267aa543817015edb4a65c66e15f9809f92bd.zip | |
ARM: DMA-Mapping: add function for setting coherent pool size from platform code
Some platforms might require to increase atomic coherent pool to make
sure that their device will be able to allocate all their buffers from
atomic context. This function can be also used to decrease atomic
coherent pool size if coherent allocations are not used for the given
sub-platform.
Suggested-by: Josh Coombs <josh.coombs@gmail.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/dma-mapping.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 2ae842df4551..5c44dcb0987b 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -203,6 +203,13 @@ static inline void dma_free_writecombine(struct device *dev, size_t size, } /* + * This can be called during early boot to increase the size of the atomic + * coherent DMA pool above the default value of 256KiB. It must be called + * before postcore_initcall. + */ +extern void __init init_dma_coherent_pool_size(unsigned long size); + +/* * This can be called during boot to increase the size of the consistent * DMA region above it's default value of 2MB. It must be called before the * memory allocator is initialised, i.e. before any core_initcall. |