1 #ifndef _ALPHA_DMA_MAPPING_H 2 #define _ALPHA_DMA_MAPPING_H 3 4 5 #ifdef CONFIG_PCI 6 7 #include <linux/pci.h> 8 9 #define dma_map_single(dev, va, size, dir) \ 10 pci_map_single(alpha_gendev_to_pci(dev), va, size, dir) 11 #define dma_unmap_single(dev, addr, size, dir) \ 12 pci_unmap_single(alpha_gendev_to_pci(dev), addr, size, dir) 13 #define dma_alloc_coherent(dev, size, addr, gfp) \ 14 __pci_alloc_consistent(alpha_gendev_to_pci(dev), size, addr, gfp) 15 #define dma_free_coherent(dev, size, va, addr) \ 16 pci_free_consistent(alpha_gendev_to_pci(dev), size, va, addr) 17 #define dma_map_page(dev, page, off, size, dir) \ 18 pci_map_page(alpha_gendev_to_pci(dev), page, off, size, dir) 19 #define dma_unmap_page(dev, addr, size, dir) \ 20 pci_unmap_page(alpha_gendev_to_pci(dev), addr, size, dir) 21 #define dma_map_sg(dev, sg, nents, dir) \ 22 pci_map_sg(alpha_gendev_to_pci(dev), sg, nents, dir) 23 #define dma_unmap_sg(dev, sg, nents, dir) \ 24 pci_unmap_sg(alpha_gendev_to_pci(dev), sg, nents, dir) 25 #define dma_supported(dev, mask) \ 26 pci_dma_supported(alpha_gendev_to_pci(dev), mask) 27 #define dma_mapping_error(dev, addr) \ 28 pci_dma_mapping_error(alpha_gendev_to_pci(dev), addr) 29 30 #else /* no PCI - no IOMMU. */ 31 32 struct scatterlist; 33 void *dma_alloc_coherent(struct device *dev, size_t size, 34 dma_addr_t *dma_handle, gfp_t gfp); 35 int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, 36 enum dma_data_direction direction); 37 38 #define dma_free_coherent(dev, size, va, addr) \ 39 free_pages((unsigned long)va, get_order(size)) 40 #define dma_supported(dev, mask) (mask < 0x00ffffffUL ? 0 : 1) 41 #define dma_map_single(dev, va, size, dir) virt_to_phys(va) 42 #define dma_map_page(dev, page, off, size, dir) (page_to_pa(page) + off) 43 44 #define dma_unmap_single(dev, addr, size, dir) ((void)0) 45 #define dma_unmap_page(dev, addr, size, dir) ((void)0) 46 #define dma_unmap_sg(dev, sg, nents, dir) ((void)0) 47 48 #define dma_mapping_error(dev, addr) (0) 49 50 #endif /* !CONFIG_PCI */ 51 52 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) 53 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) 54 #define dma_is_consistent(d, h) (1) 55 56 int dma_set_mask(struct device *dev, u64 mask); 57 58 #define dma_sync_single_for_cpu(dev, addr, size, dir) ((void)0) 59 #define dma_sync_single_for_device(dev, addr, size, dir) ((void)0) 60 #define dma_sync_single_range(dev, addr, off, size, dir) ((void)0) 61 #define dma_sync_sg_for_cpu(dev, sg, nents, dir) ((void)0) 62 #define dma_sync_sg_for_device(dev, sg, nents, dir) ((void)0) 63 #define dma_cache_sync(dev, va, size, dir) ((void)0) 64 #define dma_sync_single_range_for_cpu(dev, addr, offset, size, dir) ((void)0) 65 #define dma_sync_single_range_for_device(dev, addr, offset, size, dir) ((void)0) 66 67 #define dma_get_cache_alignment() L1_CACHE_BYTES 68 69 #endif /* _ALPHA_DMA_MAPPING_H */ 70