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
bus_dmamap_create(bus_dma_tag_t dmat,int flags,bus_dmamap_t * mapp)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
bus_dmamap_destroy(bus_dma_tag_t dmat,bus_dmamap_t map)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
bus_dmamem_alloc(bus_dma_tag_t dmat,void ** vaddr,int flags,bus_dmamap_t * mapp)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.
54 */
55 static inline void
bus_dmamem_free(bus_dma_tag_t dmat,void * vaddr,bus_dmamap_t map)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
bus_dmamap_unload(bus_dma_tag_t dmat,bus_dmamap_t map)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
bus_dmamap_sync(bus_dma_tag_t dmat,bus_dmamap_t map,bus_dmasync_op_t op)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
_bus_dmamap_load_phys(bus_dma_tag_t dmat,bus_dmamap_t map,vm_paddr_t buf,bus_size_t buflen,int flags,bus_dma_segment_t * segs,int * segp)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
_bus_dmamap_load_ma(bus_dma_tag_t dmat,bus_dmamap_t map,struct vm_page ** ma,bus_size_t tlen,int ma_offs,int flags,bus_dma_segment_t * segs,int * segp)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
_bus_dmamap_load_buffer(bus_dma_tag_t dmat,bus_dmamap_t map,void * buf,bus_size_t buflen,struct pmap * pmap,int flags,bus_dma_segment_t * segs,int * segp)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
_bus_dmamap_waitok(bus_dma_tag_t dmat,bus_dmamap_t map,struct memdesc * mem,bus_dmamap_callback_t * callback,void * callback_arg)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 *
_bus_dmamap_complete(bus_dma_tag_t dmat,bus_dmamap_t map,bus_dma_segment_t * segs,int nsegs,int error)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