Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
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 int dma_debug_resize_entries(u32 num_entries);
34
35extern void debug_dma_map_single(struct device *dev, const void *addr,
36 unsigned long len);
37
38extern void debug_dma_map_page(struct device *dev, struct page *page,
39 size_t offset, size_t size,
40 int direction, dma_addr_t dma_addr,
41 bool map_single);
42
43extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
44
45extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
46 size_t size, int direction, bool map_single);
47
48extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
49 int nents, int mapped_ents, int direction);
50
51extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
52 int nelems, int dir);
53
54extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
55 dma_addr_t dma_addr, void *virt);
56
57extern void debug_dma_free_coherent(struct device *dev, size_t size,
58 void *virt, dma_addr_t addr);
59
60extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
61 size_t size, int direction,
62 dma_addr_t dma_addr);
63
64extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
65 size_t size, int direction);
66
67extern void debug_dma_sync_single_for_cpu(struct device *dev,
68 dma_addr_t dma_handle, size_t size,
69 int direction);
70
71extern void debug_dma_sync_single_for_device(struct device *dev,
72 dma_addr_t dma_handle,
73 size_t size, int direction);
74
75extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
76 dma_addr_t dma_handle,
77 unsigned long offset,
78 size_t size,
79 int direction);
80
81extern void debug_dma_sync_single_range_for_device(struct device *dev,
82 dma_addr_t dma_handle,
83 unsigned long offset,
84 size_t size, int direction);
85
86extern void debug_dma_sync_sg_for_cpu(struct device *dev,
87 struct scatterlist *sg,
88 int nelems, int direction);
89
90extern void debug_dma_sync_sg_for_device(struct device *dev,
91 struct scatterlist *sg,
92 int nelems, int direction);
93
94extern void debug_dma_dump_mappings(struct device *dev);
95
96extern void debug_dma_assert_idle(struct page *page);
97
98#else /* CONFIG_DMA_API_DEBUG */
99
100static inline void dma_debug_add_bus(struct bus_type *bus)
101{
102}
103
104static inline int dma_debug_resize_entries(u32 num_entries)
105{
106 return 0;
107}
108
109static inline void debug_dma_map_single(struct device *dev, const void *addr,
110 unsigned long len)
111{
112}
113
114static inline void debug_dma_map_page(struct device *dev, struct page *page,
115 size_t offset, size_t size,
116 int direction, dma_addr_t dma_addr,
117 bool map_single)
118{
119}
120
121static inline void debug_dma_mapping_error(struct device *dev,
122 dma_addr_t dma_addr)
123{
124}
125
126static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
127 size_t size, int direction,
128 bool map_single)
129{
130}
131
132static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
133 int nents, int mapped_ents, int direction)
134{
135}
136
137static inline void debug_dma_unmap_sg(struct device *dev,
138 struct scatterlist *sglist,
139 int nelems, int dir)
140{
141}
142
143static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
144 dma_addr_t dma_addr, void *virt)
145{
146}
147
148static inline void debug_dma_free_coherent(struct device *dev, size_t size,
149 void *virt, dma_addr_t addr)
150{
151}
152
153static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
154 size_t size, int direction,
155 dma_addr_t dma_addr)
156{
157}
158
159static inline void debug_dma_unmap_resource(struct device *dev,
160 dma_addr_t dma_addr, size_t size,
161 int direction)
162{
163}
164
165static inline void debug_dma_sync_single_for_cpu(struct device *dev,
166 dma_addr_t dma_handle,
167 size_t size, int direction)
168{
169}
170
171static inline void debug_dma_sync_single_for_device(struct device *dev,
172 dma_addr_t dma_handle,
173 size_t size, int direction)
174{
175}
176
177static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
178 dma_addr_t dma_handle,
179 unsigned long offset,
180 size_t size,
181 int direction)
182{
183}
184
185static inline void debug_dma_sync_single_range_for_device(struct device *dev,
186 dma_addr_t dma_handle,
187 unsigned long offset,
188 size_t size,
189 int direction)
190{
191}
192
193static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
194 struct scatterlist *sg,
195 int nelems, int direction)
196{
197}
198
199static inline void debug_dma_sync_sg_for_device(struct device *dev,
200 struct scatterlist *sg,
201 int nelems, int direction)
202{
203}
204
205static inline void debug_dma_dump_mappings(struct device *dev)
206{
207}
208
209static inline void debug_dma_assert_idle(struct page *page)
210{
211}
212
213#endif /* CONFIG_DMA_API_DEBUG */
214
215#endif /* __DMA_DEBUG_H */