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   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_unmap_page(struct device *dev, dma_addr_t addr,
  43                                  size_t size, int direction, bool map_single);
  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_sync_single_for_cpu(struct device *dev,
  58                                           dma_addr_t dma_handle, size_t size,
  59                                           int direction);
  60
  61 extern void debug_dma_sync_single_for_device(struct device *dev,
  62                                              dma_addr_t dma_handle,
  63                                              size_t size, int direction);
  64
  65 extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
  66                                                 dma_addr_t dma_handle,
  67                                                 unsigned long offset,
  68                                                 size_t size,
  69                                                 int direction);
  70
  71 extern void debug_dma_sync_single_range_for_device(struct device *dev,
  72                                                    dma_addr_t dma_handle,
  73                                                    unsigned long offset,
  74                                                    size_t size, int direction);
  75
  76 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
  77                                       struct scatterlist *sg,
  78                                       int nelems, int direction);
  79
  80 extern void debug_dma_sync_sg_for_device(struct device *dev,
  81                                          struct scatterlist *sg,
  82                                          int nelems, int direction);
  83
  84 extern void debug_dma_dump_mappings(struct device *dev);
  85
  86 #else /* CONFIG_DMA_API_DEBUG */
  87
  88 static inline void dma_debug_add_bus(struct bus_type *bus)
  89 {
  90 }
  91
  92 static inline void dma_debug_init(u32 num_entries)
  93 {
  94 }
  95
  96 static inline int dma_debug_resize_entries(u32 num_entries)
  97 {
  98         return 0;
  99 }
 100
 101 static inline void debug_dma_map_page(struct device *dev, struct page *page,
 102                                       size_t offset, size_t size,
 103                                       int direction, dma_addr_t dma_addr,
 104                                       bool map_single)
 105 {
 106 }
 107
 108 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
 109                                         size_t size, int direction,
 110                                         bool map_single)
 111 {
 112 }
 113
 114 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
 115                                     int nents, int mapped_ents, int direction)
 116 {
 117 }
 118
 119 static inline void debug_dma_unmap_sg(struct device *dev,
 120                                       struct scatterlist *sglist,
 121                                       int nelems, int dir)
 122 {
 123 }
 124
 125 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 126                                             dma_addr_t dma_addr, void *virt)
 127 {
 128 }
 129
 130 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 131                                            void *virt, dma_addr_t addr)
 132 {
 133 }
 134
 135 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 136                                                  dma_addr_t dma_handle,
 137                                                  size_t size, int direction)
 138 {
 139 }
 140
 141 static inline void debug_dma_sync_single_for_device(struct device *dev,
 142                                                     dma_addr_t dma_handle,
 143                                                     size_t size, int direction)
 144 {
 145 }
 146
 147 static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
 148                                                        dma_addr_t dma_handle,
 149                                                        unsigned long offset,
 150                                                        size_t size,
 151                                                        int direction)
 152 {
 153 }
 154
 155 static inline void debug_dma_sync_single_range_for_device(struct device *dev,
 156                                                           dma_addr_t dma_handle,
 157                                                           unsigned long offset,
 158                                                           size_t size,
 159                                                           int direction)
 160 {
 161 }
 162
 163 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 164                                              struct scatterlist *sg,
 165                                              int nelems, int direction)
 166 {
 167 }
 168
 169 static inline void debug_dma_sync_sg_for_device(struct device *dev,
 170                                                 struct scatterlist *sg,
 171                                                 int nelems, int direction)
 172 {
 173 }
 174
 175 static inline void debug_dma_dump_mappings(struct device *dev)
 176 {
 177 }
 178
 179 #endif /* CONFIG_DMA_API_DEBUG */
 180
 181 #endif /* __DMA_DEBUG_H */