3 #ifndef _MACHINE_BUS_DMA_H_
4 #define _MACHINE_BUS_DMA_H_
6 #define WANT_INLINE_DMAMAP
7 #include <sys/bus_dma.h>
9 #include <machine/bus_dma_impl.h>
12 * Allocate a handle for mapping from kva/uva/physical
13 * address space into bus device space.
16 bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp)
18 struct bus_dma_tag_common *tc;
20 tc = (struct bus_dma_tag_common *)dmat;
21 return (tc->impl->map_create(dmat, flags, mapp));
25 * Destroy a handle for mapping from kva/uva/physical
26 * address space into bus device space.
29 bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map)
31 struct bus_dma_tag_common *tc;
33 tc = (struct bus_dma_tag_common *)dmat;
34 return (tc->impl->map_destroy(dmat, map));
38 * Allocate a piece of memory that can be efficiently mapped into
39 * bus device space based on the constraints listed in the dma tag.
40 * A dmamap to for use with dmamap_load is also allocated.
43 bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
46 struct bus_dma_tag_common *tc;
48 tc = (struct bus_dma_tag_common *)dmat;
49 return (tc->impl->mem_alloc(dmat, vaddr, flags, mapp));
53 * Free a piece of memory and it's allociated dmamap, that was allocated
54 * via bus_dmamem_alloc. Make the same choice for free/contigfree.
57 bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
59 struct bus_dma_tag_common *tc;
61 tc = (struct bus_dma_tag_common *)dmat;
62 tc->impl->mem_free(dmat, vaddr, map);
66 * Release the mapping held by map.
69 bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map)
71 struct bus_dma_tag_common *tc;
73 tc = (struct bus_dma_tag_common *)dmat;
74 tc->impl->map_unload(dmat, map);
78 bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op)
80 struct bus_dma_tag_common *tc;
82 tc = (struct bus_dma_tag_common *)dmat;
83 tc->impl->map_sync(dmat, map, op);
87 _bus_dmamap_load_phys(bus_dma_tag_t dmat, bus_dmamap_t map, vm_paddr_t buf,
88 bus_size_t buflen, int flags, bus_dma_segment_t *segs, int *segp)
90 struct bus_dma_tag_common *tc;
92 tc = (struct bus_dma_tag_common *)dmat;
93 return (tc->impl->load_phys(dmat, map, buf, buflen, flags, segs,
98 _bus_dmamap_load_ma(bus_dma_tag_t dmat, bus_dmamap_t map, struct vm_page **ma,
99 bus_size_t tlen, int ma_offs, int flags, bus_dma_segment_t *segs,
102 struct bus_dma_tag_common *tc;
104 tc = (struct bus_dma_tag_common *)dmat;
105 return (tc->impl->load_ma(dmat, map, ma, tlen, ma_offs, flags,
110 _bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
111 bus_size_t buflen, struct pmap *pmap, int flags, bus_dma_segment_t *segs,
114 struct bus_dma_tag_common *tc;
116 tc = (struct bus_dma_tag_common *)dmat;
117 return (tc->impl->load_buffer(dmat, map, buf, buflen, pmap, flags, segs,
122 _bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map,
123 struct memdesc *mem, bus_dmamap_callback_t *callback, void *callback_arg)
125 struct bus_dma_tag_common *tc;
127 tc = (struct bus_dma_tag_common *)dmat;
128 tc->impl->map_waitok(dmat, map, mem, callback, callback_arg);
131 static inline bus_dma_segment_t *
132 _bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map,
133 bus_dma_segment_t *segs, int nsegs, int error)
135 struct bus_dma_tag_common *tc;
137 tc = (struct bus_dma_tag_common *)dmat;
138 return (tc->impl->map_complete(dmat, map, segs, nsegs, error));
141 #endif /* !_MACHINE_BUS_DMA_H_ */