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

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