linux/include/linux/dma-debug.h
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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
  25struct device;
  26struct scatterlist;
  27struct bus_type;
  28
  29#ifdef CONFIG_DMA_API_DEBUG
  30
  31extern void dma_debug_add_bus(struct bus_type *bus);
  32
  33extern void dma_debug_init(u32 num_entries);
  34
  35extern int dma_debug_resize_entries(u32 num_entries);
  36
  37extern 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
  42extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  43                                 size_t size, int direction, bool map_single);
  44
  45extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
  46                             int nents, int mapped_ents, int direction);
  47
  48extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
  49                               int nelems, int dir);
  50
  51extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
  52                                     dma_addr_t dma_addr, void *virt);
  53
  54extern void debug_dma_free_coherent(struct device *dev, size_t size,
  55                                    void *virt, dma_addr_t addr);
  56
  57extern void debug_dma_sync_single_for_cpu(struct device *dev,
  58                                          dma_addr_t dma_handle, size_t size,
  59                                          int direction);
  60
  61extern void debug_dma_sync_single_for_device(struct device *dev,
  62                                             dma_addr_t dma_handle,
  63                                             size_t size, int direction);
  64
  65extern 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
  71extern 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
  76extern void debug_dma_sync_sg_for_cpu(struct device *dev,
  77                                      struct scatterlist *sg,
  78                                      int nelems, int direction);
  79
  80extern void debug_dma_sync_sg_for_device(struct device *dev,
  81                                         struct scatterlist *sg,
  82                                         int nelems, int direction);
  83
  84extern void debug_dma_dump_mappings(struct device *dev);
  85
  86#else /* CONFIG_DMA_API_DEBUG */
  87
  88static inline void dma_debug_add_bus(struct bus_type *bus)
  89{
  90}
  91
  92static inline void dma_debug_init(u32 num_entries)
  93{
  94}
  95
  96static inline int dma_debug_resize_entries(u32 num_entries)
  97{
  98        return 0;
  99}
 100
 101static 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
 108static 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
 114static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
 115                                    int nents, int mapped_ents, int direction)
 116{
 117}
 118
 119static inline void debug_dma_unmap_sg(struct device *dev,
 120                                      struct scatterlist *sglist,
 121                                      int nelems, int dir)
 122{
 123}
 124
 125static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 126                                            dma_addr_t dma_addr, void *virt)
 127{
 128}
 129
 130static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 131                                           void *virt, dma_addr_t addr)
 132{
 133}
 134
 135static 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
 141static 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
 147static 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
 155static 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
 163static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 164                                             struct scatterlist *sg,
 165                                             int nelems, int direction)
 166{
 167}
 168
 169static inline void debug_dma_sync_sg_for_device(struct device *dev,
 170                                                struct scatterlist *sg,
 171                                                int nelems, int direction)
 172{
 173}
 174
 175static inline void debug_dma_dump_mappings(struct device *dev)
 176{
 177}
 178
 179#endif /* CONFIG_DMA_API_DEBUG */
 180
 181#endif /* __DMA_DEBUG_H */
 182
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