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 * Is DMA address 1:1 mapping of physical address
15 bus_dma_id_mapped(bus_dma_tag_t dmat, vm_paddr_t buf, bus_size_t buflen)
17 struct bus_dma_tag_common *tc;
19 tc = (struct bus_dma_tag_common *)dmat;
20 return (tc->impl->id_mapped(dmat, buf, buflen));
24 * Allocate a handle for mapping from kva/uva/physical
25 * address space into bus device space.
28 bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp)
30 struct bus_dma_tag_common *tc;
32 tc = (struct bus_dma_tag_common *)dmat;
33 return (tc->impl->map_create(dmat, flags, mapp));
37 * Destroy a handle for mapping from kva/uva/physical
38 * address space into bus device space.
41 bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map)
43 struct bus_dma_tag_common *tc;
45 tc = (struct bus_dma_tag_common *)dmat;
46 return (tc->impl->map_destroy(dmat, map));
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.
55 bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
58 struct bus_dma_tag_common *tc;
60 tc = (struct bus_dma_tag_common *)dmat;
61 return (tc->impl->mem_alloc(dmat, vaddr, flags, mapp));
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.
69 bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
71 struct bus_dma_tag_common *tc;
73 tc = (struct bus_dma_tag_common *)dmat;
74 tc->impl->mem_free(dmat, vaddr, map);
78 * Release the mapping held by map.
81 bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map)
83 struct bus_dma_tag_common *tc;
85 tc = (struct bus_dma_tag_common *)dmat;
86 tc->impl->map_unload(dmat, map);
90 bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op)
92 struct bus_dma_tag_common *tc;
94 tc = (struct bus_dma_tag_common *)dmat;
95 tc->impl->map_sync(dmat, map, op);
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)
102 struct bus_dma_tag_common *tc;
104 tc = (struct bus_dma_tag_common *)dmat;
105 return (tc->impl->load_phys(dmat, map, buf, buflen, flags, segs,
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,
114 struct bus_dma_tag_common *tc;
116 tc = (struct bus_dma_tag_common *)dmat;
117 return (tc->impl->load_ma(dmat, map, ma, tlen, ma_offs, flags,
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,
126 struct bus_dma_tag_common *tc;
128 tc = (struct bus_dma_tag_common *)dmat;
129 return (tc->impl->load_buffer(dmat, map, buf, buflen, pmap, flags, segs,
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)
137 struct bus_dma_tag_common *tc;
139 tc = (struct bus_dma_tag_common *)dmat;
140 tc->impl->map_waitok(dmat, map, mem, callback, callback_arg);
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)
147 struct bus_dma_tag_common *tc;
149 tc = (struct bus_dma_tag_common *)dmat;
150 return (tc->impl->map_complete(dmat, map, segs, nsegs, error));
153 #endif /* !_MACHINE_BUS_DMA_H_ */