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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
  28 #ifdef CONFIG_DMA_API_DEBUG
  29
  30 extern void dma_debug_init(u32 num_entries);
  31
  32 extern void debug_dma_map_page(struct device *dev, struct page *page,
  33                                size_t offset, size_t size,
  34                                int direction, dma_addr_t dma_addr,
  35                                bool map_single);
  36
  37 extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  38                                  size_t size, int direction, bool map_single);
  39
  40 extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
  41                              int nents, int mapped_ents, int direction);
  42
  43 extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
  44                                int nelems, int dir);
  45
  46 extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
  47                                      dma_addr_t dma_addr, void *virt);
  48
  49 extern void debug_dma_free_coherent(struct device *dev, size_t size,
  50                                     void *virt, dma_addr_t addr);
  51
  52 extern void debug_dma_sync_single_for_cpu(struct device *dev,
  53                                           dma_addr_t dma_handle, size_t size,
  54                                           int direction);
  55
  56 extern void debug_dma_sync_single_for_device(struct device *dev,
  57                                              dma_addr_t dma_handle,
  58                                              size_t size, int direction);
  59
  60 extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
  61                                                 dma_addr_t dma_handle,
  62                                                 unsigned long offset,
  63                                                 size_t size,
  64                                                 int direction);
  65
  66 extern void debug_dma_sync_single_range_for_device(struct device *dev,
  67                                                    dma_addr_t dma_handle,
  68                                                    unsigned long offset,
  69                                                    size_t size, int direction);
  70
  71 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
  72                                       struct scatterlist *sg,
  73                                       int nelems, int direction);
  74
  75 extern void debug_dma_sync_sg_for_device(struct device *dev,
  76                                          struct scatterlist *sg,
  77                                          int nelems, int direction);
  78
  79 extern void debug_dma_dump_mappings(struct device *dev);
  80
  81 #else /* CONFIG_DMA_API_DEBUG */
  82
  83 static inline void dma_debug_init(u32 num_entries)
  84 {
  85 }
  86
  87 static inline void debug_dma_map_page(struct device *dev, struct page *page,
  88                                       size_t offset, size_t size,
  89                                       int direction, dma_addr_t dma_addr,
  90                                       bool map_single)
  91 {
  92 }
  93
  94 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  95                                         size_t size, int direction,
  96                                         bool map_single)
  97 {
  98 }
  99
 100 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
 101                                     int nents, int mapped_ents, int direction)
 102 {
 103 }
 104
 105 static inline void debug_dma_unmap_sg(struct device *dev,
 106                                       struct scatterlist *sglist,
 107                                       int nelems, int dir)
 108 {
 109 }
 110
 111 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 112                                             dma_addr_t dma_addr, void *virt)
 113 {
 114 }
 115
 116 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 117                                            void *virt, dma_addr_t addr)
 118 {
 119 }
 120
 121 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 122                                                  dma_addr_t dma_handle,
 123                                                  size_t size, int direction)
 124 {
 125 }
 126
 127 static inline void debug_dma_sync_single_for_device(struct device *dev,
 128                                                     dma_addr_t dma_handle,
 129                                                     size_t size, int direction)
 130 {
 131 }
 132
 133 static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
 134                                                        dma_addr_t dma_handle,
 135                                                        unsigned long offset,
 136                                                        size_t size,
 137                                                        int direction)
 138 {
 139 }
 140
 141 static inline void debug_dma_sync_single_range_for_device(struct device *dev,
 142                                                           dma_addr_t dma_handle,
 143                                                           unsigned long offset,
 144                                                           size_t size,
 145                                                           int direction)
 146 {
 147 }
 148
 149 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 150                                              struct scatterlist *sg,
 151                                              int nelems, int direction)
 152 {
 153 }
 154
 155 static inline void debug_dma_sync_sg_for_device(struct device *dev,
 156                                                 struct scatterlist *sg,
 157                                                 int nelems, int direction)
 158 {
 159 }
 160
 161 static inline void debug_dma_dump_mappings(struct device *dev)
 162 {
 163 }
 164
 165 #endif /* CONFIG_DMA_API_DEBUG */
 166
 167 #endif /* __DMA_DEBUG_H */