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Linux/include/linux/dma-debug.h

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

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