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 */
14static inline bool
15bus_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 */
27static inline int
28bus_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 */
40static inline int
41bus_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 */
54static inline int
55bus_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 */
68static inline void
69bus_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 */
80static inline void
81bus_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
89static inline void
90bus_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
98static 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
109static 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
121static 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
133static 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
143static 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