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_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 */