1 2 #ifndef _MACHINE_BUS_DMA_H_ 3 #define _MACHINE_BUS_DMA_H_ 4 5 #define WANT_INLINE_DMAMAP 6 #include <sys/bus_dma.h> 7 8 #include <machine/bus_dma_impl.h> 9 10 /* 11 * Allocate a handle for mapping from kva/uva/physical 12 * address space into bus device space. 13 */ 14 static inline int 15 bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp) 16 { 17 struct bus_dma_tag_common *tc; 18 19 tc = (struct bus_dma_tag_common *)dmat; 20 return (tc->impl->map_create(dmat, flags, mapp)); 21 } 22 23 /* 24 * Destroy a handle for mapping from kva/uva/physical 25 * address space into bus device space. 26 */ 27 static inline int 28 bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map) 29 { 30 struct bus_dma_tag_common *tc; 31 32 tc = (struct bus_dma_tag_common *)dmat; 33 return (tc->impl->map_destroy(dmat, map)); 34 } 35 36 /* 37 * Allocate a piece of memory that can be efficiently mapped into 38 * bus device space based on the constraints listed in the dma tag. 39 * A dmamap to for use with dmamap_load is also allocated. 40 */ 41 static inline int 42 bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags, 43 bus_dmamap_t *mapp) 44 { 45 struct bus_dma_tag_common *tc; 46 47 tc = (struct bus_dma_tag_common *)dmat; 48 return (tc->impl->mem_alloc(dmat, vaddr, flags, mapp)); 49 } 50 51 /* 52 * Free a piece of memory and it's allociated dmamap, that was allocated 53 * via bus_dmamem_alloc. Make the same choice for free/contigfree. 54 */ 55 static inline void 56 bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map) 57 { 58 struct bus_dma_tag_common *tc; 59 60 tc = (struct bus_dma_tag_common *)dmat; 61 tc->impl->mem_free(dmat, vaddr, map); 62 } 63 64 /* 65 * Release the mapping held by map. 66 */ 67 static inline void 68 bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map) 69 { 70 struct bus_dma_tag_common *tc; 71 72 tc = (struct bus_dma_tag_common *)dmat; 73 tc->impl->map_unload(dmat, map); 74 } 75 76 static inline void 77 bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op) 78 { 79 struct bus_dma_tag_common *tc; 80 81 tc = (struct bus_dma_tag_common *)dmat; 82 tc->impl->map_sync(dmat, map, op); 83 } 84 85 static inline int 86 _bus_dmamap_load_phys(bus_dma_tag_t dmat, bus_dmamap_t map, vm_paddr_t buf, 87 bus_size_t buflen, int flags, bus_dma_segment_t *segs, int *segp) 88 { 89 struct bus_dma_tag_common *tc; 90 91 tc = (struct bus_dma_tag_common *)dmat; 92 return (tc->impl->load_phys(dmat, map, buf, buflen, flags, segs, 93 segp)); 94 } 95 96 static inline int 97 _bus_dmamap_load_ma(bus_dma_tag_t dmat, bus_dmamap_t map, struct vm_page **ma, 98 bus_size_t tlen, int ma_offs, int flags, bus_dma_segment_t *segs, 99 int *segp) 100 { 101 struct bus_dma_tag_common *tc; 102 103 tc = (struct bus_dma_tag_common *)dmat; 104 return (tc->impl->load_ma(dmat, map, ma, tlen, ma_offs, flags, 105 segs, segp)); 106 } 107 108 static inline int 109 _bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf, 110 bus_size_t buflen, struct pmap *pmap, int flags, bus_dma_segment_t *segs, 111 int *segp) 112 { 113 struct bus_dma_tag_common *tc; 114 115 tc = (struct bus_dma_tag_common *)dmat; 116 return (tc->impl->load_buffer(dmat, map, buf, buflen, pmap, flags, segs, 117 segp)); 118 } 119 120 static inline void 121 _bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map, 122 struct memdesc *mem, bus_dmamap_callback_t *callback, void *callback_arg) 123 { 124 struct bus_dma_tag_common *tc; 125 126 tc = (struct bus_dma_tag_common *)dmat; 127 tc->impl->map_waitok(dmat, map, mem, callback, callback_arg); 128 } 129 130 static inline bus_dma_segment_t * 131 _bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map, 132 bus_dma_segment_t *segs, int nsegs, int error) 133 { 134 struct bus_dma_tag_common *tc; 135 136 tc = (struct bus_dma_tag_common *)dmat; 137 return (tc->impl->map_complete(dmat, map, segs, nsegs, error)); 138 } 139 140 #endif /* !_MACHINE_BUS_DMA_H_ */ 141