diff options
Diffstat (limited to 'include/asm-alpha/dma-mapping.h')
| -rw-r--r-- | include/asm-alpha/dma-mapping.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/asm-alpha/dma-mapping.h b/include/asm-alpha/dma-mapping.h new file mode 100644 index 000000000000..c675f282d6ad --- /dev/null +++ b/include/asm-alpha/dma-mapping.h @@ -0,0 +1,67 @@ +#ifndef _ALPHA_DMA_MAPPING_H +#define _ALPHA_DMA_MAPPING_H + +#include <linux/config.h> + +#ifdef CONFIG_PCI + +#include <linux/pci.h> + +#define dma_map_single(dev, va, size, dir) \ + pci_map_single(alpha_gendev_to_pci(dev), va, size, dir) +#define dma_unmap_single(dev, addr, size, dir) \ + pci_unmap_single(alpha_gendev_to_pci(dev), addr, size, dir) +#define dma_alloc_coherent(dev, size, addr, gfp) \ + pci_alloc_consistent(alpha_gendev_to_pci(dev), size, addr) +#define dma_free_coherent(dev, size, va, addr) \ + pci_free_consistent(alpha_gendev_to_pci(dev), size, va, addr) +#define dma_map_page(dev, page, off, size, dir) \ + pci_map_single(alpha_gendev_to_pci(dev), page, off, size, dir) +#define dma_unmap_page(dev, addr, size, dir) \ + pci_unmap_page(alpha_gendev_to_pci(dev), addr, size, dir) +#define dma_map_sg(dev, sg, nents, dir) \ + pci_map_sg(alpha_gendev_to_pci(dev), sg, nents, dir) +#define dma_unmap_sg(dev, sg, nents, dir) \ + pci_unmap_sg(alpha_gendev_to_pci(dev), sg, nents, dir) +#define dma_supported(dev, mask) \ + pci_dma_supported(alpha_gendev_to_pci(dev), mask) +#define dma_mapping_error(addr) \ + pci_dma_mapping_error(addr) + +#else /* no PCI - no IOMMU. */ + +void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, int gfp); +int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction direction); + +#define dma_free_coherent(dev, size, va, addr) \ + free_pages((unsigned long)va, get_order(size)) +#define dma_supported(dev, mask) (mask < 0x00ffffffUL ? 0 : 1) +#define dma_map_single(dev, va, size, dir) virt_to_phys(va) +#define dma_map_page(dev, page, off, size, dir) (page_to_pa(page) + off) + +#define dma_unmap_single(dev, addr, size, dir) do { } while (0) +#define dma_unmap_page(dev, addr, size, dir) do { } while (0) +#define dma_unmap_sg(dev, sg, nents, dir) do { } while (0) + +#define dma_mapping_error(addr) (0) + +#endif /* !CONFIG_PCI */ + +#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) +#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) +#define dma_is_consistent(dev) (1) + +int dma_set_mask(struct device *dev, u64 mask); + +#define dma_sync_single_for_cpu(dev, addr, size, dir) do { } while (0) +#define dma_sync_single_for_device(dev, addr, size, dir) do { } while (0) +#define dma_sync_single_range(dev, addr, off, size, dir) do { } while (0) +#define dma_sync_sg_for_cpu(dev, sg, nents, dir) do { } while (0) +#define dma_sync_sg_for_device(dev, sg, nents, dir) do { } while (0) +#define dma_cache_sync(va, size, dir) do { } while (0) + +#define dma_get_cache_alignment() L1_CACHE_BYTES + +#endif /* _ALPHA_DMA_MAPPING_H */ |