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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 #else /* CONFIG_DMA_API_DEBUG */
  72
  73 static inline void dma_debug_init(u32 num_entries)
  74 {
  75 }
  76
  77 static inline void debug_dma_map_page(struct device *dev, struct page *page,
  78                                       size_t offset, size_t size,
  79                                       int direction, dma_addr_t dma_addr,
  80                                       bool map_single)
  81 {
  82 }
  83
  84 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  85                                         size_t size, int direction,
  86                                         bool map_single)
  87 {
  88 }
  89
  90 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
  91                                     int nents, int mapped_ents, int direction)
  92 {
  93 }
  94
  95 static inline void debug_dma_unmap_sg(struct device *dev,
  96                                       struct scatterlist *sglist,
  97                                       int nelems, int dir)
  98 {
  99 }
 100
 101 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 102                                             dma_addr_t dma_addr, void *virt)
 103 {
 104 }
 105
 106 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 107                                            void *virt, dma_addr_t addr)
 108 {
 109 }
 110
 111 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 112                                                  dma_addr_t dma_handle,
 113                                                  size_t size, int direction)
 114 {
 115 }
 116
 117 static inline void debug_dma_sync_single_for_device(struct device *dev,
 118                                                     dma_addr_t dma_handle,
 119                                                     size_t size, int direction)
 120 {
 121 }
 122
 123 static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
 124                                                        dma_addr_t dma_handle,
 125                                                        unsigned long offset,
 126                                                        size_t size,
 127                                                        int direction)
 128 {
 129 }
 130
 131 static inline void debug_dma_sync_single_range_for_device(struct device *dev,
 132                                                           dma_addr_t dma_handle,
 133                                                           unsigned long offset,
 134                                                           size_t size,
 135                                                           int direction)
 136 {
 137 }
 138
 139 #endif /* CONFIG_DMA_API_DEBUG */
 140
 141 #endif /* __DMA_DEBUG_H */