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_sync_single_for_cpu(struct device *dev,
60 dma_addr_t dma_handle, size_t size,
61 int direction);
62
63 extern void debug_dma_sync_single_for_device(struct device *dev,
64 dma_addr_t dma_handle,
65 size_t size, int direction);
66
67 extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
68 dma_addr_t dma_handle,
69 unsigned long offset,
70 size_t size,
71 int direction);
72
73 extern void debug_dma_sync_single_range_for_device(struct device *dev,
74 dma_addr_t dma_handle,
75 unsigned long offset,
76 size_t size, int direction);
77
78 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
79 struct scatterlist *sg,
80 int nelems, int direction);
81
82 extern void debug_dma_sync_sg_for_device(struct device *dev,
83 struct scatterlist *sg,
84 int nelems, int direction);
85
86 extern void debug_dma_dump_mappings(struct device *dev);
87
88 extern void debug_dma_assert_idle(struct page *page);
89
90 #else /* CONFIG_DMA_API_DEBUG */
91
dma_debug_add_bus(struct bus_type * bus)92 static inline void dma_debug_add_bus(struct bus_type *bus)
93 {
94 }
95
dma_debug_init(u32 num_entries)96 static inline void dma_debug_init(u32 num_entries)
97 {
98 }
99
dma_debug_resize_entries(u32 num_entries)100 static inline int dma_debug_resize_entries(u32 num_entries)
101 {
102 return 0;
103 }
104
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)105 static inline void debug_dma_map_page(struct device *dev, struct page *page,
106 size_t offset, size_t size,
107 int direction, dma_addr_t dma_addr,
108 bool map_single)
109 {
110 }
111
debug_dma_mapping_error(struct device * dev,dma_addr_t dma_addr)112 static inline void debug_dma_mapping_error(struct device *dev,
113 dma_addr_t dma_addr)
114 {
115 }
116
debug_dma_unmap_page(struct device * dev,dma_addr_t addr,size_t size,int direction,bool map_single)117 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
118 size_t size, int direction,
119 bool map_single)
120 {
121 }
122
debug_dma_map_sg(struct device * dev,struct scatterlist * sg,int nents,int mapped_ents,int direction)123 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
124 int nents, int mapped_ents, int direction)
125 {
126 }
127
debug_dma_unmap_sg(struct device * dev,struct scatterlist * sglist,int nelems,int dir)128 static inline void debug_dma_unmap_sg(struct device *dev,
129 struct scatterlist *sglist,
130 int nelems, int dir)
131 {
132 }
133
debug_dma_alloc_coherent(struct device * dev,size_t size,dma_addr_t dma_addr,void * virt)134 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
135 dma_addr_t dma_addr, void *virt)
136 {
137 }
138
debug_dma_free_coherent(struct device * dev,size_t size,void * virt,dma_addr_t addr)139 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
140 void *virt, dma_addr_t addr)
141 {
142 }
143
debug_dma_sync_single_for_cpu(struct device * dev,dma_addr_t dma_handle,size_t size,int direction)144 static 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
debug_dma_sync_single_for_device(struct device * dev,dma_addr_t dma_handle,size_t size,int direction)150 static 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
debug_dma_sync_single_range_for_cpu(struct device * dev,dma_addr_t dma_handle,unsigned long offset,size_t size,int direction)156 static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
157 dma_addr_t dma_handle,
158 unsigned long offset,
159 size_t size,
160 int direction)
161 {
162 }
163
debug_dma_sync_single_range_for_device(struct device * dev,dma_addr_t dma_handle,unsigned long offset,size_t size,int direction)164 static inline void debug_dma_sync_single_range_for_device(struct device *dev,
165 dma_addr_t dma_handle,
166 unsigned long offset,
167 size_t size,
168 int direction)
169 {
170 }
171
debug_dma_sync_sg_for_cpu(struct device * dev,struct scatterlist * sg,int nelems,int direction)172 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
173 struct scatterlist *sg,
174 int nelems, int direction)
175 {
176 }
177
debug_dma_sync_sg_for_device(struct device * dev,struct scatterlist * sg,int nelems,int direction)178 static inline void debug_dma_sync_sg_for_device(struct device *dev,
179 struct scatterlist *sg,
180 int nelems, int direction)
181 {
182 }
183
debug_dma_dump_mappings(struct device * dev)184 static inline void debug_dma_dump_mappings(struct device *dev)
185 {
186 }
187
debug_dma_assert_idle(struct page * page)188 static inline void debug_dma_assert_idle(struct page *page)
189 {
190 }
191
192 #endif /* CONFIG_DMA_API_DEBUG */
193
194 #endif /* __DMA_DEBUG_H */
195