Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 dma_debug_init(u32 num_entries);
34
35extern int dma_debug_resize_entries(u32 num_entries);
36
37extern 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
42extern void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
43
44extern void debug_dma_unmap_page(struct device *dev, dma_addr_t addr,
45 size_t size, int direction, bool map_single);
46
47extern void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
48 int nents, int mapped_ents, int direction);
49
50extern void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
51 int nelems, int dir);
52
53extern void debug_dma_alloc_coherent(struct device *dev, size_t size,
54 dma_addr_t dma_addr, void *virt);
55
56extern void debug_dma_free_coherent(struct device *dev, size_t size,
57 void *virt, dma_addr_t addr);
58
59extern 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
63extern void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
64 size_t size, int direction);
65
66extern void debug_dma_sync_single_for_cpu(struct device *dev,
67 dma_addr_t dma_handle, size_t size,
68 int direction);
69
70extern void debug_dma_sync_single_for_device(struct device *dev,
71 dma_addr_t dma_handle,
72 size_t size, int direction);
73
74extern 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
80extern 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
85extern void debug_dma_sync_sg_for_cpu(struct device *dev,
86 struct scatterlist *sg,
87 int nelems, int direction);
88
89extern void debug_dma_sync_sg_for_device(struct device *dev,
90 struct scatterlist *sg,
91 int nelems, int direction);
92
93extern void debug_dma_dump_mappings(struct device *dev);
94
95extern void debug_dma_assert_idle(struct page *page);
96
97#else /* CONFIG_DMA_API_DEBUG */
98
99static inline void dma_debug_add_bus(struct bus_type *bus)
100{
101}
102
103static inline void dma_debug_init(u32 num_entries)
104{
105}
106
107static inline int dma_debug_resize_entries(u32 num_entries)
108{
109 return 0;
110}
111
112static 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
119static inline void debug_dma_mapping_error(struct device *dev,
120 dma_addr_t dma_addr)
121{
122}
123
124static 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
130static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
131 int nents, int mapped_ents, int direction)
132{
133}
134
135static inline void debug_dma_unmap_sg(struct device *dev,
136 struct scatterlist *sglist,
137 int nelems, int dir)
138{
139}
140
141static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
142 dma_addr_t dma_addr, void *virt)
143{
144}
145
146static inline void debug_dma_free_coherent(struct device *dev, size_t size,
147 void *virt, dma_addr_t addr)
148{
149}
150
151static 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
157static inline void debug_dma_unmap_resource(struct device *dev,
158 dma_addr_t dma_addr, size_t size,
159 int direction)
160{
161}
162
163static 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
169static 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
175static 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
183static 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
191static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
192 struct scatterlist *sg,
193 int nelems, int direction)
194{
195}
196
197static inline void debug_dma_sync_sg_for_device(struct device *dev,
198 struct scatterlist *sg,
199 int nelems, int direction)
200{
201}
202
203static inline void debug_dma_dump_mappings(struct device *dev)
204{
205}
206
207static inline void debug_dma_assert_idle(struct page *page)
208{
209}
210
211#endif /* CONFIG_DMA_API_DEBUG */
212
213#endif /* __DMA_DEBUG_H */