#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(addr) \ pci_dma_mapping_error(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(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 */