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 */