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_sync_single_for_cpu(struct device *dev,
60					  dma_addr_t dma_handle, size_t size,
61					  int direction);
62
63extern void debug_dma_sync_single_for_device(struct device *dev,
64					     dma_addr_t dma_handle,
65					     size_t size, int direction);
66
67extern 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
73extern 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
78extern void debug_dma_sync_sg_for_cpu(struct device *dev,
79				      struct scatterlist *sg,
80				      int nelems, int direction);
81
82extern void debug_dma_sync_sg_for_device(struct device *dev,
83					 struct scatterlist *sg,
84					 int nelems, int direction);
85
86extern void debug_dma_dump_mappings(struct device *dev);
87
88extern void debug_dma_assert_idle(struct page *page);
89
90#else /* CONFIG_DMA_API_DEBUG */
91
92static inline void dma_debug_add_bus(struct bus_type *bus)
93{
94}
95
96static inline void dma_debug_init(u32 num_entries)
97{
98}
99
100static inline int dma_debug_resize_entries(u32 num_entries)
101{
102	return 0;
103}
104
105static 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
112static inline void debug_dma_mapping_error(struct device *dev,
113					  dma_addr_t dma_addr)
114{
115}
116
117static 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
123static inline void debug_dma_map_sg(struct device *dev, struct scatterlist *sg,
124				    int nents, int mapped_ents, int direction)
125{
126}
127
128static inline void debug_dma_unmap_sg(struct device *dev,
129				      struct scatterlist *sglist,
130				      int nelems, int dir)
131{
132}
133
134static inline void debug_dma_alloc_coherent(struct device *dev, size_t size,
135					    dma_addr_t dma_addr, void *virt)
136{
137}
138
139static inline void debug_dma_free_coherent(struct device *dev, size_t size,
140					   void *virt, dma_addr_t addr)
141{
142}
143
144static 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
150static 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
156static 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
164static 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
172static inline void debug_dma_sync_sg_for_cpu(struct device *dev,
173					     struct scatterlist *sg,
174					     int nelems, int direction)
175{
176}
177
178static inline void debug_dma_sync_sg_for_device(struct device *dev,
179						struct scatterlist *sg,
180						int nelems, int direction)
181{
182}
183
184static inline void debug_dma_dump_mappings(struct device *dev)
185{
186}
187
188static 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