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-rw-r--r--include/linux/dma-debug.h174
1 files changed, 174 insertions, 0 deletions
diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h
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1/*
2 * Copyright (C) 2008 Advanced Micro Devices, Inc.
3 *
4 * Author: Joerg Roedel <joerg.roedel@amd.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20#ifndef __DMA_DEBUG_H
21#define __DMA_DEBUG_H
22
23#include <linux/types.h>
24
25struct device;
26struct scatterlist;
27struct bus_type;
28
29#ifdef CONFIG_DMA_API_DEBUG
30
31extern void dma_debug_add_bus(struct bus_type *bus);
32
33extern void dma_debug_init(u32 num_entries);
34
35extern void debug_dma_map_page(struct device *dev, struct page *page,
36 size_t offset, size_t size,
37 int direction, dma_addr_t dma_addr,
38 bool map_single);
39
40extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
41 size_t size, int direction, bool map_single);
42
43extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
44 int nents, int mapped_ents, int direction);
45
46extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
47 int nelems, int dir);
48
49extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
50 dma_addr_t dma_addr, void *virt);
51
52extern void debug_dma_free_coherent(struct device *dev, size_t size,
53 void *virt, dma_addr_t addr);
54
55extern void debug_dma_sync_single_for_cpu(struct device *dev,
56 dma_addr_t dma_handle, size_t size,
57 int direction);
58
59extern void debug_dma_sync_single_for_device(struct device *dev,
60 dma_addr_t dma_handle,
61 size_t size, int direction);
62
63extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
64 dma_addr_t dma_handle,
65 unsigned long offset,
66 size_t size,
67 int direction);
68
69extern void debug_dma_sync_single_range_for_device(struct device *dev,
70 dma_addr_t dma_handle,
71 unsigned long offset,
72 size_t size, int direction);
73
74extern void debug_dma_sync_sg_for_cpu(struct device *dev,
75 struct scatterlist *sg,
76 int nelems, int direction);
77
78extern void debug_dma_sync_sg_for_device(struct device *dev,
79 struct scatterlist *sg,
80 int nelems, int direction);
81
82extern void debug_dma_dump_mappings(struct device *dev);
83
84#else /* CONFIG_DMA_API_DEBUG */
85
86void dma_debug_add_bus(struct bus_type *bus)
87{
88}
89
90static inline void dma_debug_init(u32 num_entries)
91{
92}
93
94static inline void debug_dma_map_page(struct device *dev, struct page *page,
95 size_t offset, size_t size,
96 int direction, dma_addr_t dma_addr,
97 bool map_single)
98{
99}
100
101static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
102 size_t size, int direction,
103 bool map_single)
104{
105}
106
107static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
108 int nents, int mapped_ents, int direction)
109{
110}
111
112static inline void debug_dma_unmap_sg(struct device *dev,
113 struct scatterlist *sglist,
114 int nelems, int dir)
115{
116}
117
118static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
119 dma_addr_t dma_addr, void *virt)
120{
121}
122
123static inline void debug_dma_free_coherent(struct device *dev, size_t size,
124 void *virt, dma_addr_t addr)
125{
126}
127
128static inline void debug_dma_sync_single_for_cpu(struct device *dev,
129 dma_addr_t dma_handle,
130 size_t size, int direction)
131{
132}
133
134static inline void debug_dma_sync_single_for_device(struct device *dev,
135 dma_addr_t dma_handle,
136 size_t size, int direction)
137{
138}
139
140static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
141 dma_addr_t dma_handle,
142 unsigned long offset,
143 size_t size,
144 int direction)
145{
146}
147
148static inline void debug_dma_sync_single_range_for_device(struct device *dev,
149 dma_addr_t dma_handle,
150 unsigned long offset,
151 size_t size,
152 int direction)
153{
154}
155
156static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
157 struct scatterlist *sg,
158 int nelems, int direction)
159{
160}
161
162static inline void debug_dma_sync_sg_for_device(struct device *dev,
163 struct scatterlist *sg,
164 int nelems, int direction)
165{
166}
167
168static inline void debug_dma_dump_mappings(struct device *dev)
169{
170}
171
172#endif /* CONFIG_DMA_API_DEBUG */
173
174#endif /* __DMA_DEBUG_H */
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