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
25 struct device;
26 struct scatterlist;
27 struct bus_type;
28
29 #ifdef CONFIG_DMA_API_DEBUG
30
31 extern void dma_debug_add_bus(struct bus_type *bus);
32
33 extern int dma_debug_resize_entries(u32 num_entries);
34
35 extern void debug_dma_map_page(struct device *dev, struct page *page,
36 size_t offset, size_t size,
37 int direction, dma_addr_t dma_addr,
38 bool map_single);
39
40 extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
41
42 extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
43 size_t size, int direction, bool map_single);
44
45 extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
46 int nents, int mapped_ents, int direction);
47
48 extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
49 int nelems, int dir);
50
51 extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
52 dma_addr_t dma_addr, void *virt);
53
54 extern void debug_dma_free_coherent(struct device *dev, size_t size,
55 void *virt, dma_addr_t addr);
56
57 extern 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
61 extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
62 size_t size, int direction);
63
64 extern void debug_dma_sync_single_for_cpu(struct device *dev,
65 dma_addr_t dma_handle, size_t size,
66 int direction);
67
68 extern void debug_dma_sync_single_for_device(struct device *dev,
69 dma_addr_t dma_handle,
70 size_t size, int direction);
71
72 extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
73 dma_addr_t dma_handle,
74 unsigned long offset,
75 size_t size,
76 int direction);
77
78 extern void debug_dma_sync_single_range_for_device(struct device *dev,
79 dma_addr_t dma_handle,
80 unsigned long offset,
81 size_t size, int direction);
82
83 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
84 struct scatterlist *sg,
85 int nelems, int direction);
86
87 extern void debug_dma_sync_sg_for_device(struct device *dev,
88 struct scatterlist *sg,
89 int nelems, int direction);
90
91 extern void debug_dma_dump_mappings(struct device *dev);
92
93 extern void debug_dma_assert_idle(struct page *page);
94
95 #else /* CONFIG_DMA_API_DEBUG */
96
dma_debug_add_bus(struct bus_type * bus)97 static inline void dma_debug_add_bus(struct bus_type *bus)
98 {
99 }
100
dma_debug_resize_entries(u32 num_entries)101 static inline int dma_debug_resize_entries(u32 num_entries)
102 {
103 return 0;
104 }
105
debug_dma_map_page(struct device * dev,struct page * page,size_t offset,size_t size,int direction,dma_addr_t dma_addr,bool map_single)106 static inline void debug_dma_map_page(struct device *dev, struct page *page,
107 size_t offset, size_t size,
108 int direction, dma_addr_t dma_addr,
109 bool map_single)
110 {
111 }
112
debug_dma_mapping_error(struct device * dev,dma_addr_t dma_addr)113 static inline void debug_dma_mapping_error(struct device *dev,
114 dma_addr_t dma_addr)
115 {
116 }
117
debug_dma_unmap_page(struct device * dev,dma_addr_t addr,size_t size,int direction,bool map_single)118 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
119 size_t size, int direction,
120 bool map_single)
121 {
122 }
123
debug_dma_map_sg(struct device * dev,struct scatterlist * sg,int nents,int mapped_ents,int direction)124 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
125 int nents, int mapped_ents, int direction)
126 {
127 }
128
debug_dma_unmap_sg(struct device * dev,struct scatterlist * sglist,int nelems,int dir)129 static inline void debug_dma_unmap_sg(struct device *dev,
130 struct scatterlist *sglist,
131 int nelems, int dir)
132 {
133 }
134
debug_dma_alloc_coherent(struct device * dev,size_t size,dma_addr_t dma_addr,void * virt)135 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
136 dma_addr_t dma_addr, void *virt)
137 {
138 }
139
debug_dma_free_coherent(struct device * dev,size_t size,void * virt,dma_addr_t addr)140 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
141 void *virt, dma_addr_t addr)
142 {
143 }
144
debug_dma_map_resource(struct device * dev,phys_addr_t addr,size_t size,int direction,dma_addr_t dma_addr)145 static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
146 size_t size, int direction,
147 dma_addr_t dma_addr)
148 {
149 }
150
debug_dma_unmap_resource(struct device * dev,dma_addr_t dma_addr,size_t size,int direction)151 static inline void debug_dma_unmap_resource(struct device *dev,
152 dma_addr_t dma_addr, size_t size,
153 int direction)
154 {
155 }
156
debug_dma_sync_single_for_cpu(struct device * dev,dma_addr_t dma_handle,size_t size,int direction)157 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
158 dma_addr_t dma_handle,
159 size_t size, int direction)
160 {
161 }
162
debug_dma_sync_single_for_device(struct device * dev,dma_addr_t dma_handle,size_t size,int direction)163 static inline void debug_dma_sync_single_for_device(struct device *dev,
164 dma_addr_t dma_handle,
165 size_t size, int direction)
166 {
167 }
168
debug_dma_sync_single_range_for_cpu(struct device * dev,dma_addr_t dma_handle,unsigned long offset,size_t size,int direction)169 static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
170 dma_addr_t dma_handle,
171 unsigned long offset,
172 size_t size,
173 int direction)
174 {
175 }
176
debug_dma_sync_single_range_for_device(struct device * dev,dma_addr_t dma_handle,unsigned long offset,size_t size,int direction)177 static inline void debug_dma_sync_single_range_for_device(struct device *dev,
178 dma_addr_t dma_handle,
179 unsigned long offset,
180 size_t size,
181 int direction)
182 {
183 }
184
debug_dma_sync_sg_for_cpu(struct device * dev,struct scatterlist * sg,int nelems,int direction)185 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
186 struct scatterlist *sg,
187 int nelems, int direction)
188 {
189 }
190
debug_dma_sync_sg_for_device(struct device * dev,struct scatterlist * sg,int nelems,int direction)191 static inline void debug_dma_sync_sg_for_device(struct device *dev,
192 struct scatterlist *sg,
193 int nelems, int direction)
194 {
195 }
196
debug_dma_dump_mappings(struct device * dev)197 static inline void debug_dma_dump_mappings(struct device *dev)
198 {
199 }
200
debug_dma_assert_idle(struct page * page)201 static inline void debug_dma_assert_idle(struct page *page)
202 {
203 }
204
205 #endif /* CONFIG_DMA_API_DEBUG */
206
207 #endif /* __DMA_DEBUG_H */
208