LXR linux/include/linux/dma-debug.h

   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 int dma_debug_resize_entries(u32 num_entries);
  34
  35extern 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
  40extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
  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_map_resource(struct device *dev, phys_addr_t addr,
  58                                   size_t size, int direction,
  59                                   dma_addr_t dma_addr);
  60
  61extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
  62                                     size_t size, int direction);
  63
  64extern void debug_dma_sync_single_for_cpu(struct device *dev,
  65                                          dma_addr_t dma_handle, size_t size,
  66                                          int direction);
  67
  68extern void debug_dma_sync_single_for_device(struct device *dev,
  69                                             dma_addr_t dma_handle,
  70                                             size_t size, int direction);
  71
  72extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
  73                                                dma_addr_t dma_handle,
  74                                                unsigned long offset,
  75                                                size_t size,
  76                                                int direction);
  77
  78extern void debug_dma_sync_single_range_for_device(struct device *dev,
  79                                                   dma_addr_t dma_handle,
  80                                                   unsigned long offset,
  81                                                   size_t size, int direction);
  82
  83extern void debug_dma_sync_sg_for_cpu(struct device *dev,
  84                                      struct scatterlist *sg,
  85                                      int nelems, int direction);
  86
  87extern void debug_dma_sync_sg_for_device(struct device *dev,
  88                                         struct scatterlist *sg,
  89                                         int nelems, int direction);
  90
  91extern void debug_dma_dump_mappings(struct device *dev);
  92
  93extern void debug_dma_assert_idle(struct page *page);
  94
  95#else /* CONFIG_DMA_API_DEBUG */
  96
  97static inline void dma_debug_add_bus(struct bus_type *bus)
  98{
  99}
 100
 101static inline int dma_debug_resize_entries(u32 num_entries)
 102{
 103        return 0;
 104}
 105
 106static inline void debug_dma_map_page(struct device *dev, struct page *page,
 107                                      size_t offset, size_t size,
 108                                      int direction, dma_addr_t dma_addr,
 109                                      bool map_single)
 110{
 111}
 112
 113static inline void debug_dma_mapping_error(struct device *dev,
 114                                          dma_addr_t dma_addr)
 115{
 116}
 117
 118static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
 119                                        size_t size, int direction,
 120                                        bool map_single)
 121{
 122}
 123
 124static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
 125                                    int nents, int mapped_ents, int direction)
 126{
 127}
 128
 129static inline void debug_dma_unmap_sg(struct device *dev,
 130                                      struct scatterlist *sglist,
 131                                      int nelems, int dir)
 132{
 133}
 134
 135static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 136                                            dma_addr_t dma_addr, void *virt)
 137{
 138}
 139
 140static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 141                                           void *virt, dma_addr_t addr)
 142{
 143}
 144
 145static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
 146                                          size_t size, int direction,
 147                                          dma_addr_t dma_addr)
 148{
 149}
 150
 151static inline void debug_dma_unmap_resource(struct device *dev,
 152                                            dma_addr_t dma_addr, size_t size,
 153                                            int direction)
 154{
 155}
 156
 157static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 158                                                 dma_addr_t dma_handle,
 159                                                 size_t size, int direction)
 160{
 161}
 162
 163static inline void debug_dma_sync_single_for_device(struct device *dev,
 164                                                    dma_addr_t dma_handle,
 165                                                    size_t size, int direction)
 166{
 167}
 168
 169static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
 170                                                       dma_addr_t dma_handle,
 171                                                       unsigned long offset,
 172                                                       size_t size,
 173                                                       int direction)
 174{
 175}
 176
 177static inline void debug_dma_sync_single_range_for_device(struct device *dev,
 178                                                          dma_addr_t dma_handle,
 179                                                          unsigned long offset,
 180                                                          size_t size,
 181                                                          int direction)
 182{
 183}
 184
 185static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 186                                             struct scatterlist *sg,
 187                                             int nelems, int direction)
 188{
 189}
 190
 191static inline void debug_dma_sync_sg_for_device(struct device *dev,
 192                                                struct scatterlist *sg,
 193                                                int nelems, int direction)
 194{
 195}
 196
 197static inline void debug_dma_dump_mappings(struct device *dev)
 198{
 199}
 200
 201static inline void debug_dma_assert_idle(struct page *page)
 202{
 203}
 204
 205#endif /* CONFIG_DMA_API_DEBUG */
 206
 207#endif /* __DMA_DEBUG_H */
 208