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_single(struct device *dev, const void *addr,
  36                                  unsigned long len);
  37
  38 extern void debug_dma_map_page(struct device *dev, struct page *page,
  39                                size_t offset, size_t size,
  40                                int direction, dma_addr_t dma_addr,
  41                                bool map_single);
  42
  43 extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
  44
  45 extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  46                                  size_t size, int direction, bool map_single);
  47
  48 extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
  49                              int nents, int mapped_ents, int direction);
  50
  51 extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
  52                                int nelems, int dir);
  53
  54 extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
  55                                      dma_addr_t dma_addr, void *virt);
  56
  57 extern void debug_dma_free_coherent(struct device *dev, size_t size,
  58                                     void *virt, dma_addr_t addr);
  59
  60 extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
  61                                    size_t size, int direction,
  62                                    dma_addr_t dma_addr);
  63
  64 extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
  65                                      size_t size, int direction);
  66
  67 extern void debug_dma_sync_single_for_cpu(struct device *dev,
  68                                           dma_addr_t dma_handle, size_t size,
  69                                           int direction);
  70
  71 extern void debug_dma_sync_single_for_device(struct device *dev,
  72                                              dma_addr_t dma_handle,
  73                                              size_t size, int direction);
  74
  75 extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
  76                                                 dma_addr_t dma_handle,
  77                                                 unsigned long offset,
  78                                                 size_t size,
  79                                                 int direction);
  80
  81 extern void debug_dma_sync_single_range_for_device(struct device *dev,
  82                                                    dma_addr_t dma_handle,
  83                                                    unsigned long offset,
  84                                                    size_t size, int direction);
  85
  86 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
  87                                       struct scatterlist *sg,
  88                                       int nelems, int direction);
  89
  90 extern void debug_dma_sync_sg_for_device(struct device *dev,
  91                                          struct scatterlist *sg,
  92                                          int nelems, int direction);
  93
  94 extern void debug_dma_dump_mappings(struct device *dev);
  95
  96 extern void debug_dma_assert_idle(struct page *page);
  97
  98 #else /* CONFIG_DMA_API_DEBUG */
  99
 100 static inline void dma_debug_add_bus(struct bus_type *bus)
 101 {
 102 }
 103
 104 static inline int dma_debug_resize_entries(u32 num_entries)
 105 {
 106         return 0;
 107 }
 108
 109 static inline void debug_dma_map_single(struct device *dev, const void *addr,
 110                                         unsigned long len)
 111 {
 112 }
 113
 114 static inline void debug_dma_map_page(struct device *dev, struct page *page,
 115                                       size_t offset, size_t size,
 116                                       int direction, dma_addr_t dma_addr,
 117                                       bool map_single)
 118 {
 119 }
 120
 121 static inline void debug_dma_mapping_error(struct device *dev,
 122                                           dma_addr_t dma_addr)
 123 {
 124 }
 125
 126 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
 127                                         size_t size, int direction,
 128                                         bool map_single)
 129 {
 130 }
 131
 132 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
 133                                     int nents, int mapped_ents, int direction)
 134 {
 135 }
 136
 137 static inline void debug_dma_unmap_sg(struct device *dev,
 138                                       struct scatterlist *sglist,
 139                                       int nelems, int dir)
 140 {
 141 }
 142
 143 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 144                                             dma_addr_t dma_addr, void *virt)
 145 {
 146 }
 147
 148 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 149                                            void *virt, dma_addr_t addr)
 150 {
 151 }
 152
 153 static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
 154                                           size_t size, int direction,
 155                                           dma_addr_t dma_addr)
 156 {
 157 }
 158
 159 static inline void debug_dma_unmap_resource(struct device *dev,
 160                                             dma_addr_t dma_addr, size_t size,
 161                                             int direction)
 162 {
 163 }
 164
 165 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 166                                                  dma_addr_t dma_handle,
 167                                                  size_t size, int direction)
 168 {
 169 }
 170
 171 static inline void debug_dma_sync_single_for_device(struct device *dev,
 172                                                     dma_addr_t dma_handle,
 173                                                     size_t size, int direction)
 174 {
 175 }
 176
 177 static inline void debug_dma_sync_single_range_for_cpu(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_single_range_for_device(struct device *dev,
 186                                                           dma_addr_t dma_handle,
 187                                                           unsigned long offset,
 188                                                           size_t size,
 189                                                           int direction)
 190 {
 191 }
 192
 193 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 194                                              struct scatterlist *sg,
 195                                              int nelems, int direction)
 196 {
 197 }
 198
 199 static inline void debug_dma_sync_sg_for_device(struct device *dev,
 200                                                 struct scatterlist *sg,
 201                                                 int nelems, int direction)
 202 {
 203 }
 204
 205 static inline void debug_dma_dump_mappings(struct device *dev)
 206 {
 207 }
 208
 209 static inline void debug_dma_assert_idle(struct page *page)
 210 {
 211 }
 212
 213 #endif /* CONFIG_DMA_API_DEBUG */
 214
 215 #endif /* __DMA_DEBUG_H */