2 #ifndef _MACHINE_BUS_DMA_H_
3 #define _MACHINE_BUS_DMA_H_
5 #define WANT_INLINE_DMAMAP
6 #include <sys/bus_dma.h>
8 #include <machine/bus_dma_impl.h>
11 * Is DMA address 1:1 mapping of physical address
14 bus_dma_id_mapped(bus_dma_tag_t dmat, vm_paddr_t buf, bus_size_t buflen)
16 struct bus_dma_tag_common *tc;
18 tc = (struct bus_dma_tag_common *)dmat;
19 return (tc->impl->id_mapped(dmat, buf, buflen));
23 * Allocate a handle for mapping from kva/uva/physical
24 * address space into bus device space.
27 bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp)
29 struct bus_dma_tag_common *tc;
31 tc = (struct bus_dma_tag_common *)dmat;
32 return (tc->impl->map_create(dmat, flags, mapp));
36 * Destroy a handle for mapping from kva/uva/physical
37 * address space into bus device space.
40 bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map)
42 struct bus_dma_tag_common *tc;
44 tc = (struct bus_dma_tag_common *)dmat;
45 return (tc->impl->map_destroy(dmat, map));
49 * Allocate a piece of memory that can be efficiently mapped into
50 * bus device space based on the constraints listed in the dma tag.
51 * A dmamap to for use with dmamap_load is also allocated.
54 bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
57 struct bus_dma_tag_common *tc;
59 tc = (struct bus_dma_tag_common *)dmat;
60 return (tc->impl->mem_alloc(dmat, vaddr, flags, mapp));
64 * Free a piece of memory and it's allociated dmamap, that was allocated
65 * via bus_dmamem_alloc. Make the same choice for free/contigfree.
68 bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
70 struct bus_dma_tag_common *tc;
72 tc = (struct bus_dma_tag_common *)dmat;
73 tc->impl->mem_free(dmat, vaddr, map);
77 * Release the mapping held by map.
80 bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map)
82 struct bus_dma_tag_common *tc;
84 tc = (struct bus_dma_tag_common *)dmat;
85 tc->impl->map_unload(dmat, map);
89 bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op)
91 struct bus_dma_tag_common *tc;
93 tc = (struct bus_dma_tag_common *)dmat;
94 tc->impl->map_sync(dmat, map, op);
98 _bus_dmamap_load_phys(bus_dma_tag_t dmat, bus_dmamap_t map, vm_paddr_t buf,
99 bus_size_t buflen, int flags, bus_dma_segment_t *segs, int *segp)
101 struct bus_dma_tag_common *tc;
103 tc = (struct bus_dma_tag_common *)dmat;
104 return (tc->impl->load_phys(dmat, map, buf, buflen, flags, segs,
109 _bus_dmamap_load_ma(bus_dma_tag_t dmat, bus_dmamap_t map, struct vm_page **ma,
110 bus_size_t tlen, int ma_offs, int flags, bus_dma_segment_t *segs,
113 struct bus_dma_tag_common *tc;
115 tc = (struct bus_dma_tag_common *)dmat;
116 return (tc->impl->load_ma(dmat, map, ma, tlen, ma_offs, flags,
121 _bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
122 bus_size_t buflen, struct pmap *pmap, int flags, bus_dma_segment_t *segs,
125 struct bus_dma_tag_common *tc;
127 tc = (struct bus_dma_tag_common *)dmat;
128 return (tc->impl->load_buffer(dmat, map, buf, buflen, pmap, flags, segs,
133 _bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map,
134 struct memdesc *mem, bus_dmamap_callback_t *callback, void *callback_arg)
136 struct bus_dma_tag_common *tc;
138 tc = (struct bus_dma_tag_common *)dmat;
139 tc->impl->map_waitok(dmat, map, mem, callback, callback_arg);
142 static inline bus_dma_segment_t *
143 _bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map,
144 bus_dma_segment_t *segs, int nsegs, int error)
146 struct bus_dma_tag_common *tc;
148 tc = (struct bus_dma_tag_common *)dmat;
149 return (tc->impl->map_complete(dmat, map, segs, nsegs, error));
154 _bus_dmamap_load_kmsan(bus_dma_tag_t dmat, bus_dmamap_t map,
157 struct bus_dma_tag_common *tc;
159 tc = (struct bus_dma_tag_common *)dmat;
160 return (tc->impl->load_kmsan(map, mem));
164 #endif /* !_MACHINE_BUS_DMA_H_ */