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                                      gfp_t flags);
  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_sync_single_for_cpu(struct device *dev,
  61                                           dma_addr_t dma_handle, size_t size,
  62                                           int direction);
  63
  64 extern void debug_dma_sync_single_for_device(struct device *dev,
  65                                              dma_addr_t dma_handle,
  66                                              size_t size, int direction);
  67
  68 extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
  69                                                 dma_addr_t dma_handle,
  70                                                 unsigned long offset,
  71                                                 size_t size,
  72                                                 int direction);
  73
  74 extern void debug_dma_sync_single_range_for_device(struct device *dev,
  75                                                    dma_addr_t dma_handle,
  76                                                    unsigned long offset,
  77                                                    size_t size, int direction);
  78
  79 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
  80                                       struct scatterlist *sg,
  81                                       int nelems, int direction);
  82
  83 extern void debug_dma_sync_sg_for_device(struct device *dev,
  84                                          struct scatterlist *sg,
  85                                          int nelems, int direction);
  86
  87 extern void debug_dma_dump_mappings(struct device *dev);
  88
  89 extern void debug_dma_assert_idle(struct page *page);
  90
  91 #else /* CONFIG_DMA_API_DEBUG */
  92
  93 static inline void dma_debug_add_bus(struct bus_type *bus)
  94 {
  95 }
  96
  97 static inline void dma_debug_init(u32 num_entries)
  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                                             gfp_t flags)
 138 {
 139 }
 140
 141 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 142                                            void *virt, dma_addr_t addr)
 143 {
 144 }
 145
 146 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 147                                                  dma_addr_t dma_handle,
 148                                                  size_t size, int direction)
 149 {
 150 }
 151
 152 static inline void debug_dma_sync_single_for_device(struct device *dev,
 153                                                     dma_addr_t dma_handle,
 154                                                     size_t size, int direction)
 155 {
 156 }
 157
 158 static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
 159                                                        dma_addr_t dma_handle,
 160                                                        unsigned long offset,
 161                                                        size_t size,
 162                                                        int direction)
 163 {
 164 }
 165
 166 static inline void debug_dma_sync_single_range_for_device(struct device *dev,
 167                                                           dma_addr_t dma_handle,
 168                                                           unsigned long offset,
 169                                                           size_t size,
 170                                                           int direction)
 171 {
 172 }
 173
 174 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 175                                              struct scatterlist *sg,
 176                                              int nelems, int direction)
 177 {
 178 }
 179
 180 static inline void debug_dma_sync_sg_for_device(struct device *dev,
 181                                                 struct scatterlist *sg,
 182                                                 int nelems, int direction)
 183 {
 184 }
 185
 186 static inline void debug_dma_dump_mappings(struct device *dev)
 187 {
 188 }
 189
 190 static inline void debug_dma_assert_idle(struct page *page)
 191 {
 192 }
 193
 194 #endif /* CONFIG_DMA_API_DEBUG */
 195
 196 #endif /* __DMA_DEBUG_H */