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Diffstat (limited to 'arch/alpha/include/asm/dma-mapping.h')
| -rw-r--r-- | arch/alpha/include/asm/dma-mapping.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/dma-mapping.h b/arch/alpha/include/asm/dma-mapping.h new file mode 100644 index 00000000000..a5801ae02e4 --- /dev/null +++ b/arch/alpha/include/asm/dma-mapping.h @@ -0,0 +1,69 @@ +#ifndef _ALPHA_DMA_MAPPING_H +#define _ALPHA_DMA_MAPPING_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, gfp) +#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_page(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(dev, addr) \ + pci_dma_mapping_error(alpha_gendev_to_pci(dev), addr) + +#else /* no PCI - no IOMMU. */ + +struct scatterlist; +void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t 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) ((void)0) +#define dma_unmap_page(dev, addr, size, dir) ((void)0) +#define dma_unmap_sg(dev, sg, nents, dir) ((void)0) + +#define dma_mapping_error(dev, 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(d, h) (1) + +int dma_set_mask(struct device *dev, u64 mask); + +#define dma_sync_single_for_cpu(dev, addr, size, dir) ((void)0) +#define dma_sync_single_for_device(dev, addr, size, dir) ((void)0) +#define dma_sync_single_range(dev, addr, off, size, dir) ((void)0) +#define dma_sync_sg_for_cpu(dev, sg, nents, dir) ((void)0) +#define dma_sync_sg_for_device(dev, sg, nents, dir) ((void)0) +#define dma_cache_sync(dev, va, size, dir) ((void)0) +#define dma_sync_single_range_for_cpu(dev, addr, offset, size, dir) ((void)0) +#define dma_sync_single_range_for_device(dev, addr, offset, size, dir) ((void)0) + +#define dma_get_cache_alignment() L1_CACHE_BYTES + +#endif /* _ALPHA_DMA_MAPPING_H */ |