projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1648993f JR |
1 | #ifndef __LINUX_SWIOTLB_H |
| 2 | #define __LINUX_SWIOTLB_H | |
| 3 | ||
| 4 | #include <linux/types.h> | |
| 5 | ||
| 6 | struct device; | |
| 7 | struct dma_attrs; | |
| 8 | struct scatterlist; | |
| 9 | ||
| 0016fdee IC |
10 | /* |
| 11 | * Maximum allowable number of contiguous slabs to map, | |
| 12 | * must be a power of 2. What is the appropriate value ? | |
| 13 | * The complexity of {map,unmap}_single is linearly dependent on this value. | |
| 14 | */ | |
| 15 | #define IO_TLB_SEGSIZE 128 | |
| 16 | ||
| 17 | ||
| 18 | /* | |
| 19 | * log of the size of each IO TLB slab. The number of slabs is command line | |
| 20 | * controllable. | |
| 21 | */ | |
| 22 | #define IO_TLB_SHIFT 11 | |
| 23 | ||
| 1648993f JR |
24 | extern void |
| 25 | swiotlb_init(void); | |
| 26 | ||
| 8c5df16b JF |
27 | extern void *swiotlb_alloc_boot(size_t bytes, unsigned long nslabs); |
| 28 | extern void *swiotlb_alloc(unsigned order, unsigned long nslabs); | |
| 29 | ||
| 70a7d3cc JF |
30 | extern dma_addr_t swiotlb_phys_to_bus(struct device *hwdev, |
| 31 | phys_addr_t address); | |
| e08e1f7a IC |
32 | extern phys_addr_t swiotlb_bus_to_phys(dma_addr_t address); |
| 33 | ||
| b81ea27b IC |
34 | extern int swiotlb_arch_range_needs_mapping(void *ptr, size_t size); |
| 35 | ||
| 1648993f JR |
36 | extern void |
| 37 | *swiotlb_alloc_coherent(struct device *hwdev, size_t size, | |
| 38 | dma_addr_t *dma_handle, gfp_t flags); | |
| 39 | ||
| 40 | extern void | |
| 41 | swiotlb_free_coherent(struct device *hwdev, size_t size, | |
| 42 | void *vaddr, dma_addr_t dma_handle); | |
| 43 | ||
| 44 | extern dma_addr_t | |
| 45 | swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir); | |
| 46 | ||
| 47 | extern void | |
| 48 | swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, | |
| 49 | size_t size, int dir); | |
| 50 | ||
| 51 | extern dma_addr_t | |
| 52 | swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size, | |
| 53 | int dir, struct dma_attrs *attrs); | |
| 54 | ||
| 55 | extern void | |
| 56 | swiotlb_unmap_single_attrs(struct device *hwdev, dma_addr_t dev_addr, | |
| 57 | size_t size, int dir, struct dma_attrs *attrs); | |
| 58 | ||
| 59 | extern int | |
| 60 | swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents, | |
| 61 | int direction); | |
| 62 | ||
| 63 | extern void | |
| 64 | swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents, | |
| 65 | int direction); | |
| 66 | ||
| 67 | extern int | |
| 68 | swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems, | |
| 69 | int dir, struct dma_attrs *attrs); | |
| 70 | ||
| 71 | extern void | |
| 72 | swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl, | |
| 73 | int nelems, int dir, struct dma_attrs *attrs); | |
| 74 | ||
| 75 | extern void | |
| 76 | swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr, | |
| 77 | size_t size, int dir); | |
| 78 | ||
| 79 | extern void | |
| 80 | swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, | |
| 81 | int nelems, int dir); | |
| 82 | ||
| 83 | extern void | |
| 84 | swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr, | |
| 85 | size_t size, int dir); | |
| 86 | ||
| 87 | extern void | |
| 88 | swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, | |
| 89 | int nelems, int dir); | |
| 90 | ||
| 91 | extern void | |
| 92 | swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr, | |
| 93 | unsigned long offset, size_t size, int dir); | |
| 94 | ||
| 95 | extern void | |
| 96 | swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr, | |
| 97 | unsigned long offset, size_t size, | |
| 98 | int dir); | |
| 99 | ||
| 100 | extern int | |
| 101 | swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr); | |
| 102 | ||
| 103 | extern int | |
| 104 | swiotlb_dma_supported(struct device *hwdev, u64 mask); | |
| 105 | ||
| 106 | #endif /* __LINUX_SWIOTLB_H */ |