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
dma_debug_add_bus(struct bus_type * bus)74 static inline void dma_debug_add_bus(struct bus_type *bus)
75 {
76 }
77
debug_dma_map_single(struct device * dev,const void * addr,unsigned long len)78 static inline void debug_dma_map_single(struct device *dev, const void *addr,
79 unsigned long len)
80 {
81 }
82
debug_dma_map_page(struct device * dev,struct page * page,size_t offset,size_t size,int direction,dma_addr_t dma_addr)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
debug_dma_mapping_error(struct device * dev,dma_addr_t dma_addr)89 static inline void debug_dma_mapping_error(struct device *dev,
90 dma_addr_t dma_addr)
91 {
92 }
93
debug_dma_unmap_page(struct device * dev,dma_addr_t addr,size_t size,int direction)94 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
95 size_t size, int direction)
96 {
97 }
98
debug_dma_map_sg(struct device * dev,struct scatterlist * sg,int nents,int mapped_ents,int direction)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
debug_dma_unmap_sg(struct device * dev,struct scatterlist * sglist,int nelems,int dir)104 static inline void debug_dma_unmap_sg(struct device *dev,
105 struct scatterlist *sglist,
106 int nelems, int dir)
107 {
108 }
109
debug_dma_alloc_coherent(struct device * dev,size_t size,dma_addr_t dma_addr,void * virt)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
debug_dma_free_coherent(struct device * dev,size_t size,void * virt,dma_addr_t addr)115 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
116 void *virt, dma_addr_t addr)
117 {
118 }
119
debug_dma_map_resource(struct device * dev,phys_addr_t addr,size_t size,int direction,dma_addr_t dma_addr)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
debug_dma_unmap_resource(struct device * dev,dma_addr_t dma_addr,size_t size,int direction)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
debug_dma_sync_single_for_cpu(struct device * dev,dma_addr_t dma_handle,size_t size,int direction)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
debug_dma_sync_single_for_device(struct device * dev,dma_addr_t dma_handle,size_t size,int direction)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
debug_dma_sync_sg_for_cpu(struct device * dev,struct scatterlist * sg,int nelems,int direction)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
debug_dma_sync_sg_for_device(struct device * dev,struct scatterlist * sg,int nelems,int direction)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
debug_dma_dump_mappings(struct device * dev)156 static inline void debug_dma_dump_mappings(struct device *dev)
157 {
158 }
159
debug_dma_assert_idle(struct page * page)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 */
167