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 debug_dma_map_single(struct device *dev, const void *addr,
34 unsigned long len);
35
36extern void debug_dma_map_page(struct device *dev, struct page *page,
37 size_t offset, size_t size,
38 int direction, dma_addr_t dma_addr);
39
40extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
41
42extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
43 size_t size, int direction);
44
45extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
46 int nents, int mapped_ents, int direction);
47
48extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
49 int nelems, int dir);
50
51extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
52 dma_addr_t dma_addr, void *virt);
53
54extern void debug_dma_free_coherent(struct device *dev, size_t size,
55 void *virt, dma_addr_t addr);
56
57extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
58 size_t size, int direction,
59 dma_addr_t dma_addr);
60
61extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
62 size_t size, int direction);
63
64extern void debug_dma_sync_single_for_cpu(struct device *dev,
65 dma_addr_t dma_handle, size_t size,
66 int direction);
67
68extern void debug_dma_sync_single_for_device(struct device *dev,
69 dma_addr_t dma_handle,
70 size_t size, int direction);
71
72extern void debug_dma_sync_sg_for_cpu(struct device *dev,
73 struct scatterlist *sg,
74 int nelems, int direction);
75
76extern void debug_dma_sync_sg_for_device(struct device *dev,
77 struct scatterlist *sg,
78 int nelems, int direction);
79
80extern void debug_dma_dump_mappings(struct device *dev);
81
82extern void debug_dma_assert_idle(struct page *page);
83
84#else /* CONFIG_DMA_API_DEBUG */
85
86static inline void dma_debug_add_bus(struct bus_type *bus)
87{
88}
89
90static inline void debug_dma_map_single(struct device *dev, const void *addr,
91 unsigned long len)
92{
93}
94
95static inline void debug_dma_map_page(struct device *dev, struct page *page,
96 size_t offset, size_t size,
97 int direction, dma_addr_t dma_addr)
98{
99}
100
101static inline void debug_dma_mapping_error(struct device *dev,
102 dma_addr_t dma_addr)
103{
104}
105
106static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
107 size_t size, int direction)
108{
109}
110
111static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
112 int nents, int mapped_ents, int direction)
113{
114}
115
116static inline void debug_dma_unmap_sg(struct device *dev,
117 struct scatterlist *sglist,
118 int nelems, int dir)
119{
120}
121
122static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
123 dma_addr_t dma_addr, void *virt)
124{
125}
126
127static inline void debug_dma_free_coherent(struct device *dev, size_t size,
128 void *virt, dma_addr_t addr)
129{
130}
131
132static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
133 size_t size, int direction,
134 dma_addr_t dma_addr)
135{
136}
137
138static inline void debug_dma_unmap_resource(struct device *dev,
139 dma_addr_t dma_addr, size_t size,
140 int direction)
141{
142}
143
144static inline void debug_dma_sync_single_for_cpu(struct device *dev,
145 dma_addr_t dma_handle,
146 size_t size, int direction)
147{
148}
149
150static inline void debug_dma_sync_single_for_device(struct device *dev,
151 dma_addr_t dma_handle,
152 size_t size, int direction)
153{
154}
155
156static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
157 struct scatterlist *sg,
158 int nelems, int direction)
159{
160}
161
162static inline void debug_dma_sync_sg_for_device(struct device *dev,
163 struct scatterlist *sg,
164 int nelems, int direction)
165{
166}
167
168static inline void debug_dma_dump_mappings(struct device *dev)
169{
170}
171
172static inline void debug_dma_assert_idle(struct page *page)
173{
174}
175
176#endif /* CONFIG_DMA_API_DEBUG */
177
178#endif /* __DMA_DEBUG_H */
179