Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
dma-debug.h
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2008 Advanced Micro Devices, Inc.
3  *
4  * Author: Joerg Roedel <[email protected]>
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 
25 struct device;
26 struct scatterlist;
27 struct bus_type;
28 
29 #ifdef CONFIG_DMA_API_DEBUG
30 
31 extern void dma_debug_add_bus(struct bus_type *bus);
32 
33 extern void dma_debug_init(u32 num_entries);
34 
35 extern int dma_debug_resize_entries(u32 num_entries);
36 
37 extern 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 
42 extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
43  size_t size, int direction, bool map_single);
44 
45 extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
46  int nents, int mapped_ents, int direction);
47 
48 extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
49  int nelems, int dir);
50 
51 extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
52  dma_addr_t dma_addr, void *virt);
53 
54 extern void debug_dma_free_coherent(struct device *dev, size_t size,
55  void *virt, dma_addr_t addr);
56 
57 extern void debug_dma_sync_single_for_cpu(struct device *dev,
58  dma_addr_t dma_handle, size_t size,
59  int direction);
60 
61 extern void debug_dma_sync_single_for_device(struct device *dev,
62  dma_addr_t dma_handle,
63  size_t size, int direction);
64 
65 extern 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 
71 extern 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 
76 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
77  struct scatterlist *sg,
78  int nelems, int direction);
79 
80 extern void debug_dma_sync_sg_for_device(struct device *dev,
81  struct scatterlist *sg,
82  int nelems, int direction);
83 
84 extern void debug_dma_dump_mappings(struct device *dev);
85 
86 #else /* CONFIG_DMA_API_DEBUG */
87 
88 static inline void dma_debug_add_bus(struct bus_type *bus)
89 {
90 }
91 
92 static inline void dma_debug_init(u32 num_entries)
93 {
94 }
95 
96 static inline int dma_debug_resize_entries(u32 num_entries)
97 {
98  return 0;
99 }
100 
101 static 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 
108 static 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 
114 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
115  int nents, int mapped_ents, int direction)
116 {
117 }
118 
119 static inline void debug_dma_unmap_sg(struct device *dev,
120  struct scatterlist *sglist,
121  int nelems, int dir)
122 {
123 }
124 
125 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
126  dma_addr_t dma_addr, void *virt)
127 {
128 }
129 
130 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
131  void *virt, dma_addr_t addr)
132 {
133 }
134 
135 static 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 
141 static 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 
147 static 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 
155 static 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 
163 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
164  struct scatterlist *sg,
165  int nelems, int direction)
166 {
167 }
168 
169 static inline void debug_dma_sync_sg_for_device(struct device *dev,
170  struct scatterlist *sg,
171  int nelems, int direction)
172 {
173 }
174 
175 static inline void debug_dma_dump_mappings(struct device *dev)
176 {
177 }
178 
179 #endif /* CONFIG_DMA_API_DEBUG */
180 
181 #endif /* __DMA_DEBUG_H */
Generated on Thu Jan 10 2013 14:51:19 for Linux Kernel by   doxygen 1.8.2