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