Linux kernel mirror (for testing)
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linux
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
13struct device;
14struct scatterlist;
15struct bus_type;
16
17#ifdef CONFIG_DMA_API_DEBUG
18
19extern void dma_debug_add_bus(struct bus_type *bus);
20
21extern void debug_dma_map_single(struct device *dev, const void *addr,
22 unsigned long len);
23
24extern 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
28extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
29
30extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
31 size_t size, int direction);
32
33extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
34 int nents, int mapped_ents, int direction);
35
36extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
37 int nelems, int dir);
38
39extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
40 dma_addr_t dma_addr, void *virt);
41
42extern void debug_dma_free_coherent(struct device *dev, size_t size,
43 void *virt, dma_addr_t addr);
44
45extern 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
49extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
50 size_t size, int direction);
51
52extern void debug_dma_sync_single_for_cpu(struct device *dev,
53 dma_addr_t dma_handle, size_t size,
54 int direction);
55
56extern void debug_dma_sync_single_for_device(struct device *dev,
57 dma_addr_t dma_handle,
58 size_t size, int direction);
59
60extern void debug_dma_sync_sg_for_cpu(struct device *dev,
61 struct scatterlist *sg,
62 int nelems, int direction);
63
64extern void debug_dma_sync_sg_for_device(struct device *dev,
65 struct scatterlist *sg,
66 int nelems, int direction);
67
68extern void debug_dma_dump_mappings(struct device *dev);
69
70#else /* CONFIG_DMA_API_DEBUG */
71
72static inline void dma_debug_add_bus(struct bus_type *bus)
73{
74}
75
76static inline void debug_dma_map_single(struct device *dev, const void *addr,
77 unsigned long len)
78{
79}
80
81static 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
87static inline void debug_dma_mapping_error(struct device *dev,
88 dma_addr_t dma_addr)
89{
90}
91
92static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
93 size_t size, int direction)
94{
95}
96
97static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
98 int nents, int mapped_ents, int direction)
99{
100}
101
102static inline void debug_dma_unmap_sg(struct device *dev,
103 struct scatterlist *sglist,
104 int nelems, int dir)
105{
106}
107
108static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
109 dma_addr_t dma_addr, void *virt)
110{
111}
112
113static inline void debug_dma_free_coherent(struct device *dev, size_t size,
114 void *virt, dma_addr_t addr)
115{
116}
117
118static 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
124static inline void debug_dma_unmap_resource(struct device *dev,
125 dma_addr_t dma_addr, size_t size,
126 int direction)
127{
128}
129
130static 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
136static 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
142static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
143 struct scatterlist *sg,
144 int nelems, int direction)
145{
146}
147
148static inline void debug_dma_sync_sg_for_device(struct device *dev,
149 struct scatterlist *sg,
150 int nelems, int direction)
151{
152}
153
154static inline void debug_dma_dump_mappings(struct device *dev)
155{
156}
157
158#endif /* CONFIG_DMA_API_DEBUG */
159
160#endif /* __DMA_DEBUG_H */