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 debug_dma_map_single(struct device *dev, const void *addr,
  34                                  unsigned long len);
  35
  36 extern void debug_dma_map_page(struct device *dev, struct page *page,
  37                                size_t offset, size_t size,
  38                                int direction, dma_addr_t dma_addr);
  39
  40 extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
  41
  42 extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  43                                  size_t size, int direction);
  44
  45 extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
  46                              int nents, int mapped_ents, int direction);
  47
  48 extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
  49                                int nelems, int dir);
  50
  51 extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
  52                                      dma_addr_t dma_addr, void *virt);
  53
  54 extern void debug_dma_free_coherent(struct device *dev, size_t size,
  55                                     void *virt, dma_addr_t addr);
  56
  57 extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
  58                                    size_t size, int direction,
  59                                    dma_addr_t dma_addr);
  60
  61 extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
  62                                      size_t size, int direction);
  63
  64 extern void debug_dma_sync_single_for_cpu(struct device *dev,
  65                                           dma_addr_t dma_handle, size_t size,
  66                                           int direction);
  67
  68 extern void debug_dma_sync_single_for_device(struct device *dev,
  69                                              dma_addr_t dma_handle,
  70                                              size_t size, int direction);
  71
  72 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
  73                                       struct scatterlist *sg,
  74                                       int nelems, int direction);
  75
  76 extern void debug_dma_sync_sg_for_device(struct device *dev,
  77                                          struct scatterlist *sg,
  78                                          int nelems, int direction);
  79
  80 extern void debug_dma_dump_mappings(struct device *dev);
  81
  82 extern void debug_dma_assert_idle(struct page *page);
  83
  84 #else /* CONFIG_DMA_API_DEBUG */
  85
  86 static inline void dma_debug_add_bus(struct bus_type *bus)
  87 {
  88 }
  89
  90 static inline void debug_dma_map_single(struct device *dev, const void *addr,
  91                                         unsigned long len)
  92 {
  93 }
  94
  95 static inline void debug_dma_map_page(struct device *dev, struct page *page,
  96                                       size_t offset, size_t size,
  97                                       int direction, dma_addr_t dma_addr)
  98 {
  99 }
 100
 101 static inline void debug_dma_mapping_error(struct device *dev,
 102                                           dma_addr_t dma_addr)
 103 {
 104 }
 105
 106 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
 107                                         size_t size, int direction)
 108 {
 109 }
 110
 111 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
 112                                     int nents, int mapped_ents, int direction)
 113 {
 114 }
 115
 116 static inline void debug_dma_unmap_sg(struct device *dev,
 117                                       struct scatterlist *sglist,
 118                                       int nelems, int dir)
 119 {
 120 }
 121
 122 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 123                                             dma_addr_t dma_addr, void *virt)
 124 {
 125 }
 126
 127 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 128                                            void *virt, dma_addr_t addr)
 129 {
 130 }
 131
 132 static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
 133                                           size_t size, int direction,
 134                                           dma_addr_t dma_addr)
 135 {
 136 }
 137
 138 static inline void debug_dma_unmap_resource(struct device *dev,
 139                                             dma_addr_t dma_addr, size_t size,
 140                                             int direction)
 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_sg_for_cpu(struct device *dev,
 157                                              struct scatterlist *sg,
 158                                              int nelems, int direction)
 159 {
 160 }
 161
 162 static inline void debug_dma_sync_sg_for_device(struct device *dev,
 163                                                 struct scatterlist *sg,
 164                                                 int nelems, int direction)
 165 {
 166 }
 167
 168 static inline void debug_dma_dump_mappings(struct device *dev)
 169 {
 170 }
 171
 172 static inline void debug_dma_assert_idle(struct page *page)
 173 {
 174 }
 175
 176 #endif /* CONFIG_DMA_API_DEBUG */
 177
 178 #endif /* __DMA_DEBUG_H */