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-rw-r--r--drivers/gpu/drm/drm_proc.c209
1 files changed, 0 insertions, 209 deletions
diff --git a/drivers/gpu/drm/drm_proc.c b/drivers/gpu/drm/drm_proc.c
deleted file mode 100644
index d7f2324b4fb1..000000000000
--- a/drivers/gpu/drm/drm_proc.c
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1/**
2 * \file drm_proc.c
3 * /proc support for DRM
4 *
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
7 *
8 * \par Acknowledgements:
9 * Matthew J Sottek <matthew.j.sottek@intel.com> sent in a patch to fix
10 * the problem with the proc files not outputting all their information.
11 */
12
13/*
14 * Created: Mon Jan 11 09:48:47 1999 by faith@valinux.com
15 *
16 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
17 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
18 * All Rights Reserved.
19 *
20 * Permission is hereby granted, free of charge, to any person obtaining a
21 * copy of this software and associated documentation files (the "Software"),
22 * to deal in the Software without restriction, including without limitation
23 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
24 * and/or sell copies of the Software, and to permit persons to whom the
25 * Software is furnished to do so, subject to the following conditions:
26 *
27 * The above copyright notice and this permission notice (including the next
28 * paragraph) shall be included in all copies or substantial portions of the
29 * Software.
30 *
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
32 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
33 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
34 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
35 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
36 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
37 * OTHER DEALINGS IN THE SOFTWARE.
38 */
39
40#include <linux/seq_file.h>
41#include <linux/slab.h>
42#include <linux/export.h>
43#include <drm/drmP.h>
44
45/***************************************************
46 * Initialization, etc.
47 **************************************************/
48
49/**
50 * Proc file list.
51 */
52static const struct drm_info_list drm_proc_list[] = {
53 {"name", drm_name_info, 0},
54 {"vm", drm_vm_info, 0},
55 {"clients", drm_clients_info, 0},
56 {"bufs", drm_bufs_info, 0},
57 {"gem_names", drm_gem_name_info, DRIVER_GEM},
58#if DRM_DEBUG_CODE
59 {"vma", drm_vma_info, 0},
60#endif
61};
62#define DRM_PROC_ENTRIES ARRAY_SIZE(drm_proc_list)
63
64static int drm_proc_open(struct inode *inode, struct file *file)
65{
66 struct drm_info_node* node = PDE_DATA(inode);
67
68 return single_open(file, node->info_ent->show, node);
69}
70
71static const struct file_operations drm_proc_fops = {
72 .owner = THIS_MODULE,
73 .open = drm_proc_open,
74 .read = seq_read,
75 .llseek = seq_lseek,
76 .release = single_release,
77};
78
79
80/**
81 * Initialize a given set of proc files for a device
82 *
83 * \param files The array of files to create
84 * \param count The number of files given
85 * \param root DRI proc dir entry.
86 * \param minor device minor number
87 * \return Zero on success, non-zero on failure
88 *
89 * Create a given set of proc files represented by an array of
90 * gdm_proc_lists in the given root directory.
91 */
92static int drm_proc_create_files(const struct drm_info_list *files, int count,
93 struct proc_dir_entry *root, struct drm_minor *minor)
94{
95 struct drm_device *dev = minor->dev;
96 struct proc_dir_entry *ent;
97 struct drm_info_node *tmp;
98 int i;
99
100 for (i = 0; i < count; i++) {
101 u32 features = files[i].driver_features;
102
103 if (features != 0 &&
104 (dev->driver->driver_features & features) != features)
105 continue;
106
107 tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
108 if (!tmp)
109 return -1;
110
111 tmp->minor = minor;
112 tmp->info_ent = &files[i];
113 list_add(&tmp->list, &minor->proc_nodes.list);
114
115 ent = proc_create_data(files[i].name, S_IRUGO, root,
116 &drm_proc_fops, tmp);
117 if (!ent) {
118 DRM_ERROR("Cannot create /proc/dri/%u/%s\n",
119 minor->index, files[i].name);
120 list_del(&tmp->list);
121 kfree(tmp);
122 return -1;
123 }
124 }
125 return 0;
126}
127
128/**
129 * Initialize the DRI proc filesystem for a device
130 *
131 * \param dev DRM device
132 * \param root DRI proc dir entry.
133 * \param dev_root resulting DRI device proc dir entry.
134 * \return root entry pointer on success, or NULL on failure.
135 *
136 * Create the DRI proc root entry "/proc/dri", the device proc root entry
137 * "/proc/dri/%minor%/", and each entry in proc_list as
138 * "/proc/dri/%minor%/%name%".
139 */
140int drm_proc_init(struct drm_minor *minor, struct proc_dir_entry *root)
141{
142 char name[12];
143 int ret;
144
145 INIT_LIST_HEAD(&minor->proc_nodes.list);
146 sprintf(name, "%u", minor->index);
147 minor->proc_root = proc_mkdir(name, root);
148 if (!minor->proc_root) {
149 DRM_ERROR("Cannot create /proc/dri/%s\n", name);
150 return -1;
151 }
152
153 ret = drm_proc_create_files(drm_proc_list, DRM_PROC_ENTRIES,
154 minor->proc_root, minor);
155 if (ret) {
156 remove_proc_subtree(name, root);
157 minor->proc_root = NULL;
158 DRM_ERROR("Failed to create core drm proc files\n");
159 return ret;
160 }
161
162 return 0;
163}
164
165static int drm_proc_remove_files(const struct drm_info_list *files, int count,
166 struct drm_minor *minor)
167{
168 struct list_head *pos, *q;
169 struct drm_info_node *tmp;
170 int i;
171
172 for (i = 0; i < count; i++) {
173 list_for_each_safe(pos, q, &minor->proc_nodes.list) {
174 tmp = list_entry(pos, struct drm_info_node, list);
175 if (tmp->info_ent == &files[i]) {
176 remove_proc_entry(files[i].name,
177 minor->proc_root);
178 list_del(pos);
179 kfree(tmp);
180 }
181 }
182 }
183 return 0;
184}
185
186/**
187 * Cleanup the proc filesystem resources.
188 *
189 * \param minor device minor number.
190 * \param root DRI proc dir entry.
191 * \param dev_root DRI device proc dir entry.
192 * \return always zero.
193 *
194 * Remove all proc entries created by proc_init().
195 */
196int drm_proc_cleanup(struct drm_minor *minor, struct proc_dir_entry *root)
197{
198 char name[64];
199
200 if (!root || !minor->proc_root)
201 return 0;
202
203 drm_proc_remove_files(drm_proc_list, DRM_PROC_ENTRIES, minor);
204
205 sprintf(name, "%d", minor->index);
206 remove_proc_subtree(name, root);
207 return 0;
208}
209
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