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 #else /* CONFIG_DMA_API_DEBUG */
  89
  90 static inline void dma_debug_add_bus(struct bus_type *bus)
  91 {
  92 }
  93
  94 static inline void dma_debug_init(u32 num_entries)
  95 {
  96 }
  97
  98 static inline int dma_debug_resize_entries(u32 num_entries)
  99 {
 100         return 0;
 101 }
 102
 103 static inline void debug_dma_map_page(struct device *dev, struct page *page,
 104                                       size_t offset, size_t size,
 105                                       int direction, dma_addr_t dma_addr,
 106                                       bool map_single)
 107 {
 108 }
 109
 110 static inline void debug_dma_mapping_error(struct device *dev,
 111                                           dma_addr_t dma_addr)
 112 {
 113 }
 114
 115 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
 116                                         size_t size, int direction,
 117                                         bool map_single)
 118 {
 119 }
 120
 121 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
 122                                     int nents, int mapped_ents, int direction)
 123 {
 124 }
 125
 126 static inline void debug_dma_unmap_sg(struct device *dev,
 127                                       struct scatterlist *sglist,
 128                                       int nelems, int dir)
 129 {
 130 }
 131
 132 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 133                                             dma_addr_t dma_addr, void *virt)
 134 {
 135 }
 136
 137 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 138                                            void *virt, dma_addr_t addr)
 139 {
 140 }
 141
 142 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 143                                                  dma_addr_t dma_handle,
 144                                                  size_t size, int direction)
 145 {
 146 }
 147
 148 static inline void debug_dma_sync_single_for_device(struct device *dev,
 149                                                     dma_addr_t dma_handle,
 150                                                     size_t size, int direction)
 151 {
 152 }
 153
 154 static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
 155                                                        dma_addr_t dma_handle,
 156                                                        unsigned long offset,
 157                                                        size_t size,
 158                                                        int direction)
 159 {
 160 }
 161
 162 static inline void debug_dma_sync_single_range_for_device(struct device *dev,
 163                                                           dma_addr_t dma_handle,
 164                                                           unsigned long offset,
 165                                                           size_t size,
 166                                                           int direction)
 167 {
 168 }
 169
 170 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 171                                              struct scatterlist *sg,
 172                                              int nelems, int direction)
 173 {
 174 }
 175
 176 static inline void debug_dma_sync_sg_for_device(struct device *dev,
 177                                                 struct scatterlist *sg,
 178                                                 int nelems, int direction)
 179 {
 180 }
 181
 182 static inline void debug_dma_dump_mappings(struct device *dev)
 183 {
 184 }
 185
 186 #endif /* CONFIG_DMA_API_DEBUG */
 187
 188 #endif /* __DMA_DEBUG_H */