diff options
| -rw-r--r-- | arch/x86/kernel/pci-gart_64.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c index 00c2bcd..e49c6dd 100644 --- a/arch/x86/kernel/pci-gart_64.c +++ b/arch/x86/kernel/pci-gart_64.c @@ -255,10 +255,13 @@ static dma_addr_t dma_map_area(struct device *dev, dma_addr_t phys_mem, } /* Map a single area into the IOMMU */ -static dma_addr_t -gart_map_single(struct device *dev, phys_addr_t paddr, size_t size, int dir) +static dma_addr_t gart_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir, + struct dma_attrs *attrs) { unsigned long bus; + phys_addr_t paddr = page_to_phys(page) + offset; if (!dev) dev = &x86_dma_fallback_dev; @@ -272,11 +275,19 @@ gart_map_single(struct device *dev, phys_addr_t paddr, size_t size, int dir) return bus; } +static dma_addr_t gart_map_single(struct device *dev, phys_addr_t paddr, + size_t size, int dir) +{ + return gart_map_page(dev, pfn_to_page(paddr >> PAGE_SHIFT), + paddr & ~PAGE_MASK, size, dir, NULL); +} + /* * Free a DMA mapping. */ -static void gart_unmap_single(struct device *dev, dma_addr_t dma_addr, - size_t size, int direction) +static void gart_unmap_page(struct device *dev, dma_addr_t dma_addr, + size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs) { unsigned long iommu_page; int npages; @@ -295,6 +306,12 @@ static void gart_unmap_single(struct device *dev, dma_addr_t dma_addr, free_iommu(iommu_page, npages); } +static void gart_unmap_single(struct device *dev, dma_addr_t dma_addr, + size_t size, int direction) +{ + gart_unmap_page(dev, dma_addr, size, direction, NULL); +} + /* * Wrapper for pci_unmap_single working with scatterlists. */ @@ -712,6 +729,8 @@ static struct dma_mapping_ops gart_dma_ops = { .unmap_single = gart_unmap_single, .map_sg = gart_map_sg, .unmap_sg = gart_unmap_sg, + .map_page = gart_map_page, + .unmap_page = gart_unmap_page, .alloc_coherent = gart_alloc_coherent, .free_coherent = gart_free_coherent, }; |
