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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2015-06-24 15:25:31 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-07-13 10:10:55 +1000 |
| commit | 817820b0226a1376f0fc68827ab8e42d86431117 (patch) | |
| tree | 89abc8109d548572af812a13de798fe0d4b32349 /arch/powerpc/include/asm/dma-mapping.h | |
| parent | e91c25111aa373af7439d97ab0e606bcffd599ef (diff) | |
| download | linux-817820b0226a1376f0fc68827ab8e42d86431117.tar.gz linux-817820b0226a1376f0fc68827ab8e42d86431117.tar.xz | |
powerpc/iommu: Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask
This patch adds the ability to the DMA direct ops to fallback to the IOMMU
ops for coherent alloc/free if the coherent mask of the device isn't
suitable for accessing the direct DMA space and the device also happens
to have an active IOMMU table.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/dma-mapping.h')
| -rw-r--r-- | arch/powerpc/include/asm/dma-mapping.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index 9cbbc9e415fe..710f60e380e0 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -21,12 +21,12 @@ #define DMA_ERROR_CODE (~(dma_addr_t)0x0) /* Some dma direct funcs must be visible for use in other dma_ops */ -extern void *dma_direct_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag, +extern void *__dma_direct_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, + struct dma_attrs *attrs); +extern void __dma_direct_free_coherent(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_handle, struct dma_attrs *attrs); -extern void dma_direct_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle, - struct dma_attrs *attrs); extern int dma_direct_mmap_coherent(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t handle, |