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| author |   Marek Szyprowski <m.szyprowski@samsung.com> | 2012-06-13 10:01:15 +0200 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2012-07-30 12:25:47 +0200 |
| commit | dc2832e1e7db3f9ad465d2fe894bd69ef05d1e4b (patch) | |
| tree | 67b74751c0d7ee64c6ab9702a56041ab0f3df092 /arch/arm/include/asm | |
| parent | common: dma-mapping: introduce dma_get_sgtable() function (diff) | |
| download | linux-dev-dc2832e1e7db3f9ad465d2fe894bd69ef05d1e4b.tar.xz linux-dev-dc2832e1e7db3f9ad465d2fe894bd69ef05d1e4b.zip | |
ARM: dma-mapping: add support for dma_get_sgtable()
This patch adds support for dma_get_sgtable() function which is required
to let drivers to share the buffers allocated by DMA-mapping subsystem.
Generic implementation based on virt_to_page() is not suitable for ARM
dma-mapping subsystem.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Diffstat (limited to 'arch/arm/include/asm')
| -rw-r--r-- | arch/arm/include/asm/dma-mapping.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index a04803331144..2ae842df4551 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -261,6 +261,9 @@ extern void arm_dma_sync_sg_for_cpu(struct device *, struct scatterlist *, int, enum dma_data_direction); extern void arm_dma_sync_sg_for_device(struct device *, struct scatterlist *, int, enum dma_data_direction); +extern int arm_dma_get_sgtable(struct device *dev, struct sg_table *sgt, + void *cpu_addr, dma_addr_t dma_addr, size_t size, + struct dma_attrs *attrs); #endif /* __KERNEL__ */ #endif |