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_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_sync_single_for_cpu(struct device *dev,
58 dma_addr_t dma_handle, size_t size,
59 int direction);
60
61 extern void debug_dma_sync_single_for_device(struct device *dev,
62 dma_addr_t dma_handle,
63 size_t size, int direction);
64
65 extern void debug_dma_sync_single_range_for_cpu(struct device *dev,
66 dma_addr_t dma_handle,
67 unsigned long offset,
68 size_t size,
69 int direction);
70
71 extern void debug_dma_sync_single_range_for_device(struct device *dev,
72 dma_addr_t dma_handle,
73 unsigned long offset,
74 size_t size, int direction);
75
76 extern void debug_dma_sync_sg_for_cpu(struct device *dev,
77 struct scatterlist *sg,
78 int nelems, int direction);
79
80 extern void debug_dma_sync_sg_for_device(struct device *dev,
81 struct scatterlist *sg,
82 int nelems, int direction);
83
84 extern void debug_dma_dump_mappings(struct device *dev);
85
86 #else /* CONFIG_DMA_API_DEBUG */
87
dma_debug_add_bus(struct bus_type * bus)88 static inline void dma_debug_add_bus(struct bus_type *bus)
89 {
90 }
91
dma_debug_init(u32 num_entries)92 static inline void dma_debug_init(u32 num_entries)
93 {
94 }
95
dma_debug_resize_entries(u32 num_entries)96 static inline int dma_debug_resize_entries(u32 num_entries)
97 {
98 return 0;
99 }
100
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)101 static inline void debug_dma_map_page(struct device *dev, struct page *page,
102 size_t offset, size_t size,
103 int direction, dma_addr_t dma_addr,
104 bool map_single)
105 {
106 }
107
debug_dma_unmap_page(struct device * dev,dma_addr_t addr,size_t size,int direction,bool map_single)108 static inline void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
109 size_t size, int direction,
110 bool map_single)
111 {
112 }
113
debug_dma_map_sg(struct device * dev,struct scatterlist * sg,int nents,int mapped_ents,int direction)114 static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
115 int nents, int mapped_ents, int direction)
116 {
117 }
118
debug_dma_unmap_sg(struct device * dev,struct scatterlist * sglist,int nelems,int dir)119 static inline void debug_dma_unmap_sg(struct device *dev,
120 struct scatterlist *sglist,
121 int nelems, int dir)
122 {
123 }
124
debug_dma_alloc_coherent(struct device * dev,size_t size,dma_addr_t dma_addr,void * virt)125 static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
126 dma_addr_t dma_addr, void *virt)
127 {
128 }
129
debug_dma_free_coherent(struct device * dev,size_t size,void * virt,dma_addr_t addr)130 static inline void debug_dma_free_coherent(struct device *dev, size_t size,
131 void *virt, dma_addr_t addr)
132 {
133 }
134
debug_dma_sync_single_for_cpu(struct device * dev,dma_addr_t dma_handle,size_t size,int direction)135 static inline void debug_dma_sync_single_for_cpu(struct device *dev,
136 dma_addr_t dma_handle,
137 size_t size, int direction)
138 {
139 }
140
debug_dma_sync_single_for_device(struct device * dev,dma_addr_t dma_handle,size_t size,int direction)141 static inline void debug_dma_sync_single_for_device(struct device *dev,
142 dma_addr_t dma_handle,
143 size_t size, int direction)
144 {
145 }
146
debug_dma_sync_single_range_for_cpu(struct device * dev,dma_addr_t dma_handle,unsigned long offset,size_t size,int direction)147 static inline void debug_dma_sync_single_range_for_cpu(struct device *dev,
148 dma_addr_t dma_handle,
149 unsigned long offset,
150 size_t size,
151 int direction)
152 {
153 }
154
debug_dma_sync_single_range_for_device(struct device * dev,dma_addr_t dma_handle,unsigned long offset,size_t size,int direction)155 static inline void debug_dma_sync_single_range_for_device(struct device *dev,
156 dma_addr_t dma_handle,
157 unsigned long offset,
158 size_t size,
159 int direction)
160 {
161 }
162
debug_dma_sync_sg_for_cpu(struct device * dev,struct scatterlist * sg,int nelems,int direction)163 static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
164 struct scatterlist *sg,
165 int nelems, int direction)
166 {
167 }
168
debug_dma_sync_sg_for_device(struct device * dev,struct scatterlist * sg,int nelems,int direction)169 static inline void debug_dma_sync_sg_for_device(struct device *dev,
170 struct scatterlist *sg,
171 int nelems, int direction)
172 {
173 }
174
debug_dma_dump_mappings(struct device * dev)175 static inline void debug_dma_dump_mappings(struct device *dev)
176 {
177 }
178
179 #endif /* CONFIG_DMA_API_DEBUG */
180
181 #endif /* __DMA_DEBUG_H */
182