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 extern void debug_dma_assert_idle(struct page *page);
  71
  72 #else /* CONFIG_DMA_API_DEBUG */
  73
  74 static inline void dma_debug_add_bus(struct bus_type *bus)
  75 {
  76 }
  77
  78 static inline void debug_dma_map_single(struct device *dev, const void *addr,
  79                                         unsigned long len)
  80 {
  81 }
  82
  83 static inline void debug_dma_map_page(struct device *dev, struct page *page,
  84                                       size_t offset, size_t size,
  85                                       int direction, dma_addr_t dma_addr)
  86 {
  87 }
  88
  89 static inline void debug_dma_mapping_error(struct device *dev,
  90                                           dma_addr_t dma_addr)
  91 {
  92 }
  93
  94 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
  95                                         size_t size, int direction)
  96 {
  97 }
  98
  99 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
 100                                     int nents, int mapped_ents, int direction)
 101 {
 102 }
 103
 104 static inline void debug_dma_unmap_sg(struct device *dev,
 105                                       struct scatterlist *sglist,
 106                                       int nelems, int dir)
 107 {
 108 }
 109
 110 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
 111                                             dma_addr_t dma_addr, void *virt)
 112 {
 113 }
 114
 115 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
 116                                            void *virt, dma_addr_t addr)
 117 {
 118 }
 119
 120 static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
 121                                           size_t size, int direction,
 122                                           dma_addr_t dma_addr)
 123 {
 124 }
 125
 126 static inline void debug_dma_unmap_resource(struct device *dev,
 127                                             dma_addr_t dma_addr, size_t size,
 128                                             int direction)
 129 {
 130 }
 131
 132 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
 133                                                  dma_addr_t dma_handle,
 134                                                  size_t size, int direction)
 135 {
 136 }
 137
 138 static inline void debug_dma_sync_single_for_device(struct device *dev,
 139                                                     dma_addr_t dma_handle,
 140                                                     size_t size, int direction)
 141 {
 142 }
 143
 144 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
 145                                              struct scatterlist *sg,
 146                                              int nelems, int direction)
 147 {
 148 }
 149
 150 static inline void debug_dma_sync_sg_for_device(struct device *dev,
 151                                                 struct scatterlist *sg,
 152                                                 int nelems, int direction)
 153 {
 154 }
 155
 156 static inline void debug_dma_dump_mappings(struct device *dev)
 157 {
 158 }
 159
 160 static inline void debug_dma_assert_idle(struct page *page)
 161 {
 162 }
 163
 164 #endif /* CONFIG_DMA_API_DEBUG */
 165
 166 #endif /* __DMA_DEBUG_H */