| Joerg Roedel | 1648993 | 2008-10-15 22:01:03 -0700 | [diff] [blame] | 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 | |
| Ian Campbell | 0016fde | 2008-12-16 12:17:27 -0800 | [diff] [blame^] | 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 | |
| Joerg Roedel | 1648993 | 2008-10-15 22:01:03 -0700 | [diff] [blame] | 24 | extern void |
| 25 | swiotlb_init(void); |
| 26 | |
| Jeremy Fitzhardinge | 8c5df16 | 2008-12-16 12:17:26 -0800 | [diff] [blame] | 27 | extern void *swiotlb_alloc_boot(size_t bytes, unsigned long nslabs); |
| 28 | extern void *swiotlb_alloc(unsigned order, unsigned long nslabs); |
| 29 | |
| Joerg Roedel | 1648993 | 2008-10-15 22:01:03 -0700 | [diff] [blame] | 30 | extern void |
| 31 | *swiotlb_alloc_coherent(struct device *hwdev, size_t size, |
| 32 | dma_addr_t *dma_handle, gfp_t flags); |
| 33 | |
| 34 | extern void |
| 35 | swiotlb_free_coherent(struct device *hwdev, size_t size, |
| 36 | void *vaddr, dma_addr_t dma_handle); |
| 37 | |
| 38 | extern dma_addr_t |
| 39 | swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir); |
| 40 | |
| 41 | extern void |
| 42 | swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, |
| 43 | size_t size, int dir); |
| 44 | |
| 45 | extern dma_addr_t |
| 46 | swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size, |
| 47 | int dir, struct dma_attrs *attrs); |
| 48 | |
| 49 | extern void |
| 50 | swiotlb_unmap_single_attrs(struct device *hwdev, dma_addr_t dev_addr, |
| 51 | size_t size, int dir, struct dma_attrs *attrs); |
| 52 | |
| 53 | extern int |
| 54 | swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents, |
| 55 | int direction); |
| 56 | |
| 57 | extern void |
| 58 | swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents, |
| 59 | int direction); |
| 60 | |
| 61 | extern int |
| 62 | swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems, |
| 63 | int dir, struct dma_attrs *attrs); |
| 64 | |
| 65 | extern void |
| 66 | swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl, |
| 67 | int nelems, int dir, struct dma_attrs *attrs); |
| 68 | |
| 69 | extern void |
| 70 | swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr, |
| 71 | size_t size, int dir); |
| 72 | |
| 73 | extern void |
| 74 | swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, |
| 75 | int nelems, int dir); |
| 76 | |
| 77 | extern void |
| 78 | swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr, |
| 79 | size_t size, int dir); |
| 80 | |
| 81 | extern void |
| 82 | swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, |
| 83 | int nelems, int dir); |
| 84 | |
| 85 | extern void |
| 86 | swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr, |
| 87 | unsigned long offset, size_t size, int dir); |
| 88 | |
| 89 | extern void |
| 90 | swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr, |
| 91 | unsigned long offset, size_t size, |
| 92 | int dir); |
| 93 | |
| 94 | extern int |
| 95 | swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr); |
| 96 | |
| 97 | extern int |
| 98 | swiotlb_dma_supported(struct device *hwdev, u64 mask); |
| 99 | |
| 100 | #endif /* __LINUX_SWIOTLB_H */ |