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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 void debug_dma_map_page(struct device *dev, struct page *page,
  36                                size_t offset, size_t size,
  37                                int direction, dma_addr_t dma_addr,
  38                                bool map_single);
  39
  40 extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  41                                  size_t size, int direction, bool map_single);
  42
  43 extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
  44                              int nents, int mapped_ents, int direction);
  45
  46 extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
  47                                int nelems, int dir);
  48
  49 extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
  50                                      dma_addr_t dma_addr, void *virt);
  51
  52 extern void debug_dma_free_coherent(struct device *dev, size_t size,
  53                                     void *virt, dma_addr_t addr);
  54
  55 extern void debug_dma_sync_single_for_cpu(struct device *dev,
  56                                           dma_addr_t dma_handle, size_t size,
  57                                           int direction);
  58
  59 extern void debug_dma_sync_single_for_device(struct device *dev,
  60                                              dma_addr_t dma_handle,
  61                                              size_t size, int direction);
  62
  63 extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
  64                                                 dma_addr_t dma_handle,
  65                                                 unsigned long offset,
  66                                                 size_t size,
  67                                                 int direction);
  68
  69 extern void debug_dma_sync_single_range_for_device(struct device *dev,
  70                                                    dma_addr_t dma_handle,
  71                                                    unsigned long offset,
  72                                                    size_t size, int direction);
  73
  74 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
  75                                       struct scatterlist *sg,
  76                                       int nelems, int direction);
  77
  78 extern void debug_dma_sync_sg_for_device(struct device *dev,
  79                                          struct scatterlist *sg,
  80                                          int nelems, int direction);
  81
  82 extern void debug_dma_dump_mappings(struct device *dev);
  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 dma_debug_init(u32 num_entries)
  91 {
  92 }
  93
  94 static inline void debug_dma_map_page(struct device *dev, struct page *page,
  95                                       size_t offset, size_t size,
  96                                       int direction, dma_addr_t dma_addr,
  97                                       bool map_single)
  98 {
  99 }
 100
 101 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
 102                                         size_t size, int direction,
 103                                         bool map_single)
 104 {
 105 }
 106
 107 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
 108                                     int nents, int mapped_ents, int direction)
 109 {
 110 }
 111
 112 static inline void debug_dma_unmap_sg(struct device *dev,
 113                                       struct scatterlist *sglist,
 114                                       int nelems, int dir)
 115 {
 116 }
 117
 118 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 119                                             dma_addr_t dma_addr, void *virt)
 120 {
 121 }
 122
 123 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 124                                            void *virt, dma_addr_t addr)
 125 {
 126 }
 127
 128 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 129                                                  dma_addr_t dma_handle,
 130                                                  size_t size, int direction)
 131 {
 132 }
 133
 134 static inline void debug_dma_sync_single_for_device(struct device *dev,
 135                                                     dma_addr_t dma_handle,
 136                                                     size_t size, int direction)
 137 {
 138 }
 139
 140 static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
 141                                                        dma_addr_t dma_handle,
 142                                                        unsigned long offset,
 143                                                        size_t size,
 144                                                        int direction)
 145 {
 146 }
 147
 148 static inline void debug_dma_sync_single_range_for_device(struct device *dev,
 149                                                           dma_addr_t dma_handle,
 150                                                           unsigned long offset,
 151                                                           size_t size,
 152                                                           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 #endif /* CONFIG_DMA_API_DEBUG */
 173
 174 #endif /* __DMA_DEBUG_H */