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| author |   Christoph Hellwig <hch@lst.de> | 2019-02-13 08:01:05 +0100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-02-18 22:41:02 +1100 |
| commit | 8617a5c5bc001e52c40d6b2ece78e8f332039217 (patch) | |
| tree | 79af57e1b85923c38b42c490fcc7b9c21cb32728 /arch/powerpc/include/asm/dma-mapping.h | |
| parent | powerpc/dma: untangle vio_dma_mapping_ops from dma_iommu_ops (diff) | |
| download | linux-dev-8617a5c5bc001e52c40d6b2ece78e8f332039217.tar.xz linux-dev-8617a5c5bc001e52c40d6b2ece78e8f332039217.zip | |
powerpc/dma: handle iommu bypass in dma_iommu_ops
Add a new iommu_bypass flag to struct dev_archdata so that the dma_iommu
implementation can handle the direct mapping transparently instead of
switiching ops around. Setting of this flag is controlled by new
pci_controller_ops method.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
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 | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index ebf66809f2d3..ff86b863eceb 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -29,6 +29,14 @@ extern int dma_nommu_mmap_coherent(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t handle, size_t size, unsigned long attrs); +int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl, + int nents, enum dma_data_direction direction, + unsigned long attrs); +dma_addr_t dma_nommu_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir, unsigned long attrs); +int dma_nommu_dma_supported(struct device *dev, u64 mask); +u64 dma_nommu_get_required_mask(struct device *dev); #ifdef CONFIG_NOT_COHERENT_CACHE /* |