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