diff options
Diffstat (limited to 'arch/powerpc/kernel/dma-iommu.c')
| -rw-r--r-- | arch/powerpc/kernel/dma-iommu.c | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c index 49248f89ce23..14183af1b3fb 100644 --- a/arch/powerpc/kernel/dma-iommu.c +++ b/arch/powerpc/kernel/dma-iommu.c @@ -30,28 +30,26 @@ static void dma_iommu_free_coherent(struct device *dev, size_t size, } /* Creates TCEs for a user provided buffer. The user buffer must be - * contiguous real kernel storage (not vmalloc). The address of the buffer - * passed here is the kernel (virtual) address of the buffer. The buffer - * need not be page aligned, the dma_addr_t returned will point to the same - * byte within the page as vaddr. + * contiguous real kernel storage (not vmalloc). The address passed here + * comprises a page address and offset into that page. The dma_addr_t + * returned will point to the same byte within the page as was passed in. */ -static dma_addr_t dma_iommu_map_single(struct device *dev, void *vaddr, - size_t size, - enum dma_data_direction direction, - struct dma_attrs *attrs) +static dma_addr_t dma_iommu_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) { - return iommu_map_single(dev, dev->archdata.dma_data, vaddr, size, - device_to_mask(dev), direction, attrs); + return iommu_map_page(dev, dev->archdata.dma_data, page, offset, size, + device_to_mask(dev), direction, attrs); } -static void dma_iommu_unmap_single(struct device *dev, dma_addr_t dma_handle, - size_t size, - enum dma_data_direction direction, - struct dma_attrs *attrs) +static void dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle, + size_t size, enum dma_data_direction direction, + struct dma_attrs *attrs) { - iommu_unmap_single(dev->archdata.dma_data, dma_handle, size, direction, - attrs); + iommu_unmap_page(dev->archdata.dma_data, dma_handle, size, direction, + attrs); } @@ -94,10 +92,10 @@ static int dma_iommu_dma_supported(struct device *dev, u64 mask) struct dma_mapping_ops dma_iommu_ops = { .alloc_coherent = dma_iommu_alloc_coherent, .free_coherent = dma_iommu_free_coherent, - .map_single = dma_iommu_map_single, - .unmap_single = dma_iommu_unmap_single, .map_sg = dma_iommu_map_sg, .unmap_sg = dma_iommu_unmap_sg, .dma_supported = dma_iommu_dma_supported, + .map_page = dma_iommu_map_page, + .unmap_page = dma_iommu_unmap_page, }; EXPORT_SYMBOL(dma_iommu_ops); |