summaryrefslogtreecommitdiff
path: root/include/drm/drm_debugfs.h
blob: cf06cee4343f2bc50c942cf114dfe367b4915840 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
/*
 * Internal Header for the Direct Rendering Manager
 *
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * Copyright (c) 2009-2010, Code Aurora Forum.
 * All rights reserved.
 *
 * Author: Rickard E. (Rik) Faith <faith@valinux.com>
 * Author: Gareth Hughes <gareth@valinux.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef _DRM_DEBUGFS_H_
#define _DRM_DEBUGFS_H_

#include <linux/types.h>
#include <linux/seq_file.h>

#include <drm/drm_gpuvm.h>

/**
 * DRM_DEBUGFS_GPUVA_INFO - &drm_info_list entry to dump a GPU VA space
 * @show: the &drm_info_list's show callback
 * @data: driver private data
 *
 * Drivers should use this macro to define a &drm_info_list entry to provide a
 * debugfs file for dumping the GPU VA space regions and mappings.
 *
 * For each DRM GPU VA space drivers should call drm_debugfs_gpuva_info() from
 * their @show callback.
 */
#define DRM_DEBUGFS_GPUVA_INFO(show, data) {"gpuvas", show, DRIVER_GEM_GPUVA, data}

/**
 * struct drm_info_list - debugfs info list entry
 *
 * This structure represents a debugfs file to be created by the drm
 * core.
 */
struct drm_info_list {
	/** @name: file name */
	const char *name;
	/**
	 * @show:
	 *
	 * Show callback. &seq_file->private will be set to the &struct
	 * drm_info_node corresponding to the instance of this info on a given
	 * &struct drm_minor.
	 */
	int (*show)(struct seq_file*, void*);
	/** @driver_features: Required driver features for this entry */
	u32 driver_features;
	/** @data: Driver-private data, should not be device-specific. */
	void *data;
};

/**
 * struct drm_info_node - Per-minor debugfs node structure
 *
 * This structure represents a debugfs file, as an instantiation of a &struct
 * drm_info_list on a &struct drm_minor.
 *
 * FIXME:
 *
 * No it doesn't make a hole lot of sense that we duplicate debugfs entries for
 * both the render and the primary nodes, but that's how this has organically
 * grown. It should probably be fixed, with a compatibility link, if needed.
 */
struct drm_info_node {
	/** @minor: &struct drm_minor for this node. */
	struct drm_minor *minor;
	/** @info_ent: template for this node. */
	const struct drm_info_list *info_ent;
	/* private: */
	struct list_head list;
	struct dentry *dent;
};

/**
 * struct drm_debugfs_info - debugfs info list entry
 *
 * This structure represents a debugfs file to be created by the drm
 * core.
 */
struct drm_debugfs_info {
	/** @name: File name */
	const char *name;

	/**
	 * @show:
	 *
	 * Show callback. &seq_file->private will be set to the &struct
	 * drm_debugfs_entry corresponding to the instance of this info
	 * on a given &struct drm_device.
	 */
	int (*show)(struct seq_file*, void*);

	/** @driver_features: Required driver features for this entry. */
	u32 driver_features;

	/** @data: Driver-private data, should not be device-specific. */
	void *data;
};

/**
 * struct drm_debugfs_entry - Per-device debugfs node structure
 *
 * This structure represents a debugfs file, as an instantiation of a &struct
 * drm_debugfs_info on a &struct drm_device.
 */
struct drm_debugfs_entry {
	/** @dev: &struct drm_device for this node. */
	struct drm_device *dev;

	/** @file: Template for this node. */
	struct drm_debugfs_info file;

	/** @list: Linked list of all device nodes. */
	struct list_head list;
};

#if defined(CONFIG_DEBUG_FS)
void drm_debugfs_create_files(const struct drm_info_list *files,
			      int count, struct dentry *root,
			      struct drm_minor *minor);
int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
			     struct dentry *root, struct drm_minor *minor);

void drm_debugfs_add_file(struct drm_device *dev, const char *name,
			  int (*show)(struct seq_file*, void*), void *data);

void drm_debugfs_add_files(struct drm_device *dev,
			   const struct drm_debugfs_info *files, int count);

int drm_debugfs_gpuva_info(struct seq_file *m,
			   struct drm_gpuvm *gpuvm);
#else
static inline void drm_debugfs_create_files(const struct drm_info_list *files,
					    int count, struct dentry *root,
					    struct drm_minor *minor)
{}

static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
					   int count, struct dentry *root,
					   struct drm_minor *minor)
{
	return 0;
}

static inline void drm_debugfs_add_file(struct drm_device *dev, const char *name,
					int (*show)(struct seq_file*, void*),
					void *data)
{}

static inline void drm_debugfs_add_files(struct drm_device *dev,
					 const struct drm_debugfs_info *files,
					 int count)
{}

static inline int drm_debugfs_gpuva_info(struct seq_file *m,
					 struct drm_gpuvm *gpuvm)
{
	return 0;
}
#endif

#endif /* _DRM_DEBUGFS_H_ */