include/linux/dma-debug.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2008 Advanced Micro Devices, Inc.
   4  *
   5  * Author: Joerg Roedel <joerg.roedel@amd.com>
   6  */
   7
   8 #ifndef __DMA_DEBUG_H
   9 #define __DMA_DEBUG_H
  10
  11 #include <linux/types.h>
  12
  13 struct device;
  14 struct scatterlist;
  15 struct bus_type;
  16
  17 #ifdef CONFIG_DMA_API_DEBUG
  18
  19 extern void dma_debug_add_bus(struct bus_type *bus);
  20
  21 extern void debug_dma_map_single(struct device *dev, const void *addr,
  22                                  unsigned long len);
  23
  24 extern void debug_dma_map_page(struct device *dev, struct page *page,
  25                                size_t offset, size_t size,
  26                                int direction, dma_addr_t dma_addr);
  27
  28 extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
  29
  30 extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  31                                  size_t size, int direction);
  32
  33 extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
  34                              int nents, int mapped_ents, int direction);
  35
  36 extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
  37                                int nelems, int dir);
  38
  39 extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
  40                                      dma_addr_t dma_addr, void *virt);
  41
  42 extern void debug_dma_free_coherent(struct device *dev, size_t size,
  43                                     void *virt, dma_addr_t addr);
  44
  45 extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
  46                                    size_t size, int direction,
  47                                    dma_addr_t dma_addr);
  48
  49 extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
  50                                      size_t size, int direction);
  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_sg_for_cpu(struct device *dev,
  61                                       struct scatterlist *sg,
  62                                       int nelems, int direction);
  63
  64 extern void debug_dma_sync_sg_for_device(struct device *dev,
  65                                          struct scatterlist *sg,
  66                                          int nelems, int direction);
  67
  68 extern void debug_dma_dump_mappings(struct device *dev);
  69
  70 #else /* CONFIG_DMA_API_DEBUG */
  71
  72 static inline void dma_debug_add_bus(struct bus_type *bus)
  73 {
  74 }
  75
  76 static inline void debug_dma_map_single(struct device *dev, const void *addr,
  77                                         unsigned long len)
  78 {
  79 }
  80
  81 static inline void debug_dma_map_page(struct device *dev, struct page *page,
  82                                       size_t offset, size_t size,
  83                                       int direction, dma_addr_t dma_addr)
  84 {
  85 }
  86
  87 static inline void debug_dma_mapping_error(struct device *dev,
  88                                           dma_addr_t dma_addr)
  89 {
  90 }
  91
  92 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  93                                         size_t size, int direction)
  94 {
  95 }
  96
  97 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
  98                                     int nents, int mapped_ents, int direction)
  99 {
 100 }
 101
 102 static inline void debug_dma_unmap_sg(struct device *dev,
 103                                       struct scatterlist *sglist,
 104                                       int nelems, int dir)
 105 {
 106 }
 107
 108 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 109                                             dma_addr_t dma_addr, void *virt)
 110 {
 111 }
 112
 113 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 114                                            void *virt, dma_addr_t addr)
 115 {
 116 }
 117
 118 static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
 119                                           size_t size, int direction,
 120                                           dma_addr_t dma_addr)
 121 {
 122 }
 123
 124 static inline void debug_dma_unmap_resource(struct device *dev,
 125                                             dma_addr_t dma_addr, size_t size,
 126                                             int direction)
 127 {
 128 }
 129
 130 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 131                                                  dma_addr_t dma_handle,
 132                                                  size_t size, int direction)
 133 {
 134 }
 135
 136 static inline void debug_dma_sync_single_for_device(struct device *dev,
 137                                                     dma_addr_t dma_handle,
 138                                                     size_t size, int direction)
 139 {
 140 }
 141
 142 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 143                                              struct scatterlist *sg,
 144                                              int nelems, int direction)
 145 {
 146 }
 147
 148 static inline void debug_dma_sync_sg_for_device(struct device *dev,
 149                                                 struct scatterlist *sg,
 150                                                 int nelems, int direction)
 151 {
 152 }
 153
 154 static inline void debug_dma_dump_mappings(struct device *dev)
 155 {
 156 }
 157
 158 #endif /* CONFIG_DMA_API_DEBUG */
 159
 160 #endif /* __DMA_DEBUG_H */