diff options
Diffstat (limited to 'linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/dma-mapping.h')
-rw-r--r-- | linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/dma-mapping.h | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/dma-mapping.h b/linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/dma-mapping.h deleted file mode 100644 index 39a9ce0ad0..0000000000 --- a/linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/dma-mapping.h +++ /dev/null @@ -1,157 +0,0 @@ -#ifndef _ASM_I386_DMA_MAPPING_H -#define _ASM_I386_DMA_MAPPING_H - -/* - * IOMMU interface. See Documentation/DMA-mapping.txt and DMA-API.txt for - * documentation. - */ - -#include <linux/mm.h> -#include <asm/cache.h> -#include <asm/io.h> -#include <asm/scatterlist.h> -#include <asm/swiotlb.h> - -static inline int -address_needs_mapping(struct device *hwdev, dma_addr_t addr) -{ - dma_addr_t mask = 0xffffffff; - /* If the device has a mask, use it, otherwise default to 32 bits */ - if (hwdev && hwdev->dma_mask) - mask = *hwdev->dma_mask; - return (addr & ~mask) != 0; -} - -static inline int -range_straddles_page_boundary(void *p, size_t size) -{ - extern unsigned long *contiguous_bitmap; - return (((((unsigned long)p & ~PAGE_MASK) + size) > PAGE_SIZE) && - !test_bit(__pa(p) >> PAGE_SHIFT, contiguous_bitmap)); -} - -#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) - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag); - -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle); - -extern dma_addr_t -dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction); - -extern void -dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction); - -extern int dma_map_sg(struct device *hwdev, struct scatterlist *sg, - int nents, enum dma_data_direction direction); -extern void dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, - int nents, enum dma_data_direction direction); - -#ifdef CONFIG_HIGHMEM -extern dma_addr_t -dma_map_page(struct device *dev, struct page *page, unsigned long offset, - size_t size, enum dma_data_direction direction); - -extern void -dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction); -#else -#define dma_map_page(dev, page, offset, size, dir) \ - dma_map_single(dev, page_address(page) + (offset), (size), (dir)) -#define dma_unmap_page dma_unmap_single -#endif - -extern void -dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction); - -extern void -dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction); - -static inline void -dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - dma_sync_single_for_cpu(dev, dma_handle+offset, size, direction); -} - -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - dma_sync_single_for_device(dev, dma_handle+offset, size, direction); -} - -static inline void -dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ - if (swiotlb) - swiotlb_sync_sg_for_cpu(dev,sg,nelems,direction); - flush_write_buffers(); -} - -static inline void -dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ - if (swiotlb) - swiotlb_sync_sg_for_device(dev,sg,nelems,direction); - flush_write_buffers(); -} - -extern int -dma_mapping_error(dma_addr_t dma_addr); - -extern int -dma_supported(struct device *dev, u64 mask); - -static inline int -dma_set_mask(struct device *dev, u64 mask) -{ - if(!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - - return 0; -} - -static inline int -dma_get_cache_alignment(void) -{ - /* no easy way to get cache size on all x86, so return the - * maximum possible, to be safe */ - return (1 << INTERNODE_CACHE_SHIFT); -} - -#define dma_is_consistent(d) (1) - -static inline void -dma_cache_sync(void *vaddr, size_t size, - enum dma_data_direction direction) -{ - flush_write_buffers(); -} - -#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY -extern int -dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, - dma_addr_t device_addr, size_t size, int flags); - -extern void -dma_release_declared_memory(struct device *dev); - -extern void * -dma_mark_declared_memory_occupied(struct device *dev, - dma_addr_t device_addr, size_t size); - -#endif |