diff options
Diffstat (limited to 'arch/x86/kernel/pci-swiotlb_64.c')
| -rw-r--r-- | arch/x86/kernel/pci-swiotlb_64.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/kernel/pci-swiotlb_64.c b/arch/x86/kernel/pci-swiotlb_64.c index d59c9174766..d1c0366886d 100644 --- a/arch/x86/kernel/pci-swiotlb_64.c +++ b/arch/x86/kernel/pci-swiotlb_64.c @@ -45,6 +45,23 @@ swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size, return swiotlb_map_single(hwdev, phys_to_virt(paddr), size, direction); } +/* these will be moved to lib/swiotlb.c later on */ + +static dma_addr_t swiotlb_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir, + struct dma_attrs *attrs) +{ + return swiotlb_map_single(dev, page_address(page) + offset, size, dir); +} + +static void swiotlb_unmap_page(struct device *dev, dma_addr_t dma_handle, + size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs) +{ + swiotlb_unmap_single(dev, dma_handle, size, dir); +} + static void *x86_swiotlb_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t flags) { @@ -71,6 +88,8 @@ struct dma_mapping_ops swiotlb_dma_ops = { .sync_sg_for_device = swiotlb_sync_sg_for_device, .map_sg = swiotlb_map_sg, .unmap_sg = swiotlb_unmap_sg, + .map_page = swiotlb_map_page, + .unmap_page = swiotlb_unmap_page, .dma_supported = NULL, }; |