1 /* $FreeBSD$ */ 2 3 #ifndef _MACHINE_BUS_DMA_H_ 4 #define _MACHINE_BUS_DMA_H_ 5 6 #define WANT_INLINE_DMAMAP 7 #include <sys/bus_dma.h> 8 9 #include <machine/bus_dma_impl.h> 10 11 /* 12 * Is DMA address 1:1 mapping of physical address 13 */ 14 static inline bool 15 bus_dma_id_mapped(bus_dma_tag_t dmat, vm_paddr_t buf, bus_size_t buflen) 16 { 17 struct bus_dma_tag_common *tc; 18 19 tc = (struct bus_dma_tag_common *)dmat; 20 return (tc->impl->id_mapped(dmat, buf, buflen)); 21 } 22 23 /* 24 * Allocate a handle for mapping from kva/uva/physical 25 * address space into bus device space. 26 */ 27 static inline int 28 bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp) 29 { 30 struct bus_dma_tag_common *tc; 31 32 tc = (struct bus_dma_tag_common *)dmat; 33 return (tc->impl->map_create(dmat, flags, mapp)); 34 } 35 36 /* 37 * Destroy a handle for mapping from kva/uva/physical 38 * address space into bus device space. 39 */ 40 static inline int 41 bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map) 42 { 43 struct bus_dma_tag_common *tc; 44 45 tc = (struct bus_dma_tag_common *)dmat; 46 return (tc->impl->map_destroy(dmat, map)); 47 } 48 49 /* 50 * Allocate a piece of memory that can be efficiently mapped into 51 * bus device space based on the constraints listed in the dma tag. 52 * A dmamap to for use with dmamap_load is also allocated. 53 */ 54 static inline int 55 bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags, 56 bus_dmamap_t *mapp) 57 { 58 struct bus_dma_tag_common *tc; 59 60 tc = (struct bus_dma_tag_common *)dmat; 61 return (tc->impl->mem_alloc(dmat, vaddr, flags, mapp)); 62 } 63 64 /* 65 * Free a piece of memory and it's allociated dmamap, that was allocated 66 * via bus_dmamem_alloc. Make the same choice for free/contigfree. 67 */ 68 static inline void 69 bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map) 70 { 71 struct bus_dma_tag_common *tc; 72 73 tc = (struct bus_dma_tag_common *)dmat; 74 tc->impl->mem_free(dmat, vaddr, map); 75 } 76 77 /* 78 * Release the mapping held by map. 79 */ 80 static inline void 81 bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map) 82 { 83 struct bus_dma_tag_common *tc; 84 85 tc = (struct bus_dma_tag_common *)dmat; 86 tc->impl->map_unload(dmat, map); 87 } 88 89 static inline void 90 bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op) 91 { 92 struct bus_dma_tag_common *tc; 93 94 tc = (struct bus_dma_tag_common *)dmat; 95 tc->impl->map_sync(dmat, map, op); 96 } 97 98 static inline int 99 _bus_dmamap_load_phys(bus_dma_tag_t dmat, bus_dmamap_t map, vm_paddr_t buf, 100 bus_size_t buflen, int flags, bus_dma_segment_t *segs, int *segp) 101 { 102 struct bus_dma_tag_common *tc; 103 104 tc = (struct bus_dma_tag_common *)dmat; 105 return (tc->impl->load_phys(dmat, map, buf, buflen, flags, segs, 106 segp)); 107 } 108 109 static inline int 110 _bus_dmamap_load_ma(bus_dma_tag_t dmat, bus_dmamap_t map, struct vm_page **ma, 111 bus_size_t tlen, int ma_offs, int flags, bus_dma_segment_t *segs, 112 int *segp) 113 { 114 struct bus_dma_tag_common *tc; 115 116 tc = (struct bus_dma_tag_common *)dmat; 117 return (tc->impl->load_ma(dmat, map, ma, tlen, ma_offs, flags, 118 segs, segp)); 119 } 120 121 static inline int 122 _bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf, 123 bus_size_t buflen, struct pmap *pmap, int flags, bus_dma_segment_t *segs, 124 int *segp) 125 { 126 struct bus_dma_tag_common *tc; 127 128 tc = (struct bus_dma_tag_common *)dmat; 129 return (tc->impl->load_buffer(dmat, map, buf, buflen, pmap, flags, segs, 130 segp)); 131 } 132 133 static inline void 134 _bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map, 135 struct memdesc *mem, bus_dmamap_callback_t *callback, void *callback_arg) 136 { 137 struct bus_dma_tag_common *tc; 138 139 tc = (struct bus_dma_tag_common *)dmat; 140 tc->impl->map_waitok(dmat, map, mem, callback, callback_arg); 141 } 142 143 static inline bus_dma_segment_t * 144 _bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map, 145 bus_dma_segment_t *segs, int nsegs, int error) 146 { 147 struct bus_dma_tag_common *tc; 148 149 tc = (struct bus_dma_tag_common *)dmat; 150 return (tc->impl->map_complete(dmat, map, segs, nsegs, error)); 151 } 152 153 #endif /* !_MACHINE_BUS_DMA_H_ */ 154