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 void dma_debug_init(u32 num_entries);
34
35 extern int dma_debug_resize_entries(u32 num_entries);
36
37 extern void debug_dma_map_page(struct device *dev, struct page *page,
38 size_t offset, size_t size,
39 int direction, dma_addr_t dma_addr,
40 bool map_single);
41
42 extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
43
44 extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
45 size_t size, int direction, bool map_single);
46
47 extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
48 int nents, int mapped_ents, int direction);
49
50 extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
51 int nelems, int dir);
52
53 extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
54 dma_addr_t dma_addr, void *virt);
55
56 extern void debug_dma_free_coherent(struct device *dev, size_t size,
57 void *virt, dma_addr_t addr);
58
59 extern void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
60 size_t size, int direction,
61 dma_addr_t dma_addr);
62
63 extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
64 size_t size, int direction);
65
66 extern void debug_dma_sync_single_for_cpu(struct device *dev,
67 dma_addr_t dma_handle, size_t size,
68 int direction);
69
70 extern void debug_dma_sync_single_for_device(struct device *dev,
71 dma_addr_t dma_handle,
72 size_t size, int direction);
73
74 extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
75 dma_addr_t dma_handle,
76 unsigned long offset,
77 size_t size,
78 int direction);
79
80 extern void debug_dma_sync_single_range_for_device(struct device *dev,
81 dma_addr_t dma_handle,
82 unsigned long offset,
83 size_t size, int direction);
84
85 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
86 struct scatterlist *sg,
87 int nelems, int direction);
88
89 extern void debug_dma_sync_sg_for_device(struct device *dev,
90 struct scatterlist *sg,
91 int nelems, int direction);
92
93 extern void debug_dma_dump_mappings(struct device *dev);
94
95 extern void debug_dma_assert_idle(struct page *page);
96
97 #else /* CONFIG_DMA_API_DEBUG */
98
dma_debug_add_bus(struct bus_type * bus)99 static inline void dma_debug_add_bus(struct bus_type *bus)
100 {
101 }
102
dma_debug_init(u32 num_entries)103 static inline void dma_debug_init(u32 num_entries)
104 {
105 }
106
dma_debug_resize_entries(u32 num_entries)107 static inline int dma_debug_resize_entries(u32 num_entries)
108 {
109 return 0;
110 }
111
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)112 static inline void debug_dma_map_page(struct device *dev, struct page *page,
113 size_t offset, size_t size,
114 int direction, dma_addr_t dma_addr,
115 bool map_single)
116 {
117 }
118
debug_dma_mapping_error(struct device * dev,dma_addr_t dma_addr)119 static inline void debug_dma_mapping_error(struct device *dev,
120 dma_addr_t dma_addr)
121 {
122 }
123
debug_dma_unmap_page(struct device * dev,dma_addr_t addr,size_t size,int direction,bool map_single)124 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
125 size_t size, int direction,
126 bool map_single)
127 {
128 }
129
debug_dma_map_sg(struct device * dev,struct scatterlist * sg,int nents,int mapped_ents,int direction)130 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
131 int nents, int mapped_ents, int direction)
132 {
133 }
134
debug_dma_unmap_sg(struct device * dev,struct scatterlist * sglist,int nelems,int dir)135 static inline void debug_dma_unmap_sg(struct device *dev,
136 struct scatterlist *sglist,
137 int nelems, int dir)
138 {
139 }
140
debug_dma_alloc_coherent(struct device * dev,size_t size,dma_addr_t dma_addr,void * virt)141 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
142 dma_addr_t dma_addr, void *virt)
143 {
144 }
145
debug_dma_free_coherent(struct device * dev,size_t size,void * virt,dma_addr_t addr)146 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
147 void *virt, dma_addr_t addr)
148 {
149 }
150
debug_dma_map_resource(struct device * dev,phys_addr_t addr,size_t size,int direction,dma_addr_t dma_addr)151 static inline void debug_dma_map_resource(struct device *dev, phys_addr_t addr,
152 size_t size, int direction,
153 dma_addr_t dma_addr)
154 {
155 }
156
debug_dma_unmap_resource(struct device * dev,dma_addr_t dma_addr,size_t size,int direction)157 static inline void debug_dma_unmap_resource(struct device *dev,
158 dma_addr_t dma_addr, size_t size,
159 int direction)
160 {
161 }
162
debug_dma_sync_single_for_cpu(struct device * dev,dma_addr_t dma_handle,size_t size,int direction)163 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
164 dma_addr_t dma_handle,
165 size_t size, int direction)
166 {
167 }
168
debug_dma_sync_single_for_device(struct device * dev,dma_addr_t dma_handle,size_t size,int direction)169 static inline void debug_dma_sync_single_for_device(struct device *dev,
170 dma_addr_t dma_handle,
171 size_t size, int direction)
172 {
173 }
174
debug_dma_sync_single_range_for_cpu(struct device * dev,dma_addr_t dma_handle,unsigned long offset,size_t size,int direction)175 static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
176 dma_addr_t dma_handle,
177 unsigned long offset,
178 size_t size,
179 int direction)
180 {
181 }
182
debug_dma_sync_single_range_for_device(struct device * dev,dma_addr_t dma_handle,unsigned long offset,size_t size,int direction)183 static inline void debug_dma_sync_single_range_for_device(struct device *dev,
184 dma_addr_t dma_handle,
185 unsigned long offset,
186 size_t size,
187 int direction)
188 {
189 }
190
debug_dma_sync_sg_for_cpu(struct device * dev,struct scatterlist * sg,int nelems,int direction)191 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
192 struct scatterlist *sg,
193 int nelems, int direction)
194 {
195 }
196
debug_dma_sync_sg_for_device(struct device * dev,struct scatterlist * sg,int nelems,int direction)197 static inline void debug_dma_sync_sg_for_device(struct device *dev,
198 struct scatterlist *sg,
199 int nelems, int direction)
200 {
201 }
202
debug_dma_dump_mappings(struct device * dev)203 static inline void debug_dma_dump_mappings(struct device *dev)
204 {
205 }
206
debug_dma_assert_idle(struct page * page)207 static inline void debug_dma_assert_idle(struct page *page)
208 {
209 }
210
211 #endif /* CONFIG_DMA_API_DEBUG */
212
213 #endif /* __DMA_DEBUG_H */
214