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_mapping_error(struct device *dev, dma_addr_t dma_addr);
  43
  44extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  45                                 size_t size, int direction, bool map_single);
  46
  47extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
  48                             int nents, int mapped_ents, int direction);
  49
  50extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
  51                               int nelems, int dir);
  52
  53extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
  54                                     dma_addr_t dma_addr, void *virt);
  55
  56extern void debug_dma_free_coherent(struct device *dev, size_t size,
  57                                    void *virt, dma_addr_t addr);
  58
  59extern void debug_dma_sync_single_for_cpu(struct device *dev,
  60                                          dma_addr_t dma_handle, size_t size,
  61                                          int direction);
  62
  63extern void debug_dma_sync_single_for_device(struct device *dev,
  64                                             dma_addr_t dma_handle,
  65                                             size_t size, int direction);
  66
  67extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
  68                                                dma_addr_t dma_handle,
  69                                                unsigned long offset,
  70                                                size_t size,
  71                                                int direction);
  72
  73extern void debug_dma_sync_single_range_for_device(struct device *dev,
  74                                                   dma_addr_t dma_handle,
  75                                                   unsigned long offset,
  76                                                   size_t size, int direction);
  77
  78extern void debug_dma_sync_sg_for_cpu(struct device *dev,
  79                                      struct scatterlist *sg,
  80                                      int nelems, int direction);
  81
  82extern void debug_dma_sync_sg_for_device(struct device *dev,
  83                                         struct scatterlist *sg,
  84                                         int nelems, int direction);
  85
  86extern void debug_dma_dump_mappings(struct device *dev);
  87
  88#else /* CONFIG_DMA_API_DEBUG */
  89
  90static inline void dma_debug_add_bus(struct bus_type *bus)
  91{
  92}
  93
  94static inline void dma_debug_init(u32 num_entries)
  95{
  96}
  97
  98static inline int dma_debug_resize_entries(u32 num_entries)
  99{
 100        return 0;
 101}
 102
 103static inline void debug_dma_map_page(struct device *dev, struct page *page,
 104                                      size_t offset, size_t size,
 105                                      int direction, dma_addr_t dma_addr,
 106                                      bool map_single)
 107{
 108}
 109
 110static inline void debug_dma_mapping_error(struct device *dev,
 111                                          dma_addr_t dma_addr)
 112{
 113}
 114
 115static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
 116                                        size_t size, int direction,
 117                                        bool map_single)
 118{
 119}
 120
 121static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
 122                                    int nents, int mapped_ents, int direction)
 123{
 124}
 125
 126static inline void debug_dma_unmap_sg(struct device *dev,
 127                                      struct scatterlist *sglist,
 128                                      int nelems, int dir)
 129{
 130}
 131
 132static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 133                                            dma_addr_t dma_addr, void *virt)
 134{
 135}
 136
 137static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 138                                           void *virt, dma_addr_t addr)
 139{
 140}
 141
 142static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 143                                                 dma_addr_t dma_handle,
 144                                                 size_t size, int direction)
 145{
 146}
 147
 148static inline void debug_dma_sync_single_for_device(struct device *dev,
 149                                                    dma_addr_t dma_handle,
 150                                                    size_t size, int direction)
 151{
 152}
 153
 154static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
 155                                                       dma_addr_t dma_handle,
 156                                                       unsigned long offset,
 157                                                       size_t size,
 158                                                       int direction)
 159{
 160}
 161
 162static inline void debug_dma_sync_single_range_for_device(struct device *dev,
 163                                                          dma_addr_t dma_handle,
 164                                                          unsigned long offset,
 165                                                          size_t size,
 166                                                          int direction)
 167{
 168}
 169
 170static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 171                                             struct scatterlist *sg,
 172                                             int nelems, int direction)
 173{
 174}
 175
 176static inline void debug_dma_sync_sg_for_device(struct device *dev,
 177                                                struct scatterlist *sg,
 178                                                int nelems, int direction)
 179{
 180}
 181
 182static inline void debug_dma_dump_mappings(struct device *dev)
 183{
 184}
 185
 186#endif /* CONFIG_DMA_API_DEBUG */
 187
 188#endif /* __DMA_DEBUG_H */
 189
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