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955b12de BG |
1 | /** |
2 | * \file drm_info.c | |
3 | * DRM info file implementations | |
4 | * | |
5 | * \author Ben Gamari <bgamari@gmail.com> | |
6 | */ | |
7 | ||
8 | /* | |
9 | * Created: Sun Dec 21 13:09:50 2008 by bgamari@gmail.com | |
10 | * | |
11 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. | |
12 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. | |
13 | * Copyright 2008 Ben Gamari <bgamari@gmail.com> | |
14 | * All Rights Reserved. | |
15 | * | |
16 | * Permission is hereby granted, free of charge, to any person obtaining a | |
17 | * copy of this software and associated documentation files (the "Software"), | |
18 | * to deal in the Software without restriction, including without limitation | |
19 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
20 | * and/or sell copies of the Software, and to permit persons to whom the | |
21 | * Software is furnished to do so, subject to the following conditions: | |
22 | * | |
23 | * The above copyright notice and this permission notice (including the next | |
24 | * paragraph) shall be included in all copies or substantial portions of the | |
25 | * Software. | |
26 | * | |
27 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
28 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
29 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
30 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
31 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
32 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
33 | * OTHER DEALINGS IN THE SOFTWARE. | |
34 | */ | |
35 | ||
36 | #include <linux/seq_file.h> | |
760285e7 | 37 | #include <drm/drmP.h> |
d9fc9413 DV |
38 | #include <drm/drm_gem.h> |
39 | ||
ba8286fa | 40 | #include "drm_legacy.h" |
955b12de BG |
41 | |
42 | /** | |
43 | * Called when "/proc/dri/.../name" is read. | |
44 | * | |
45 | * Prints the device name together with the bus id if available. | |
46 | */ | |
47 | int drm_name_info(struct seq_file *m, void *data) | |
48 | { | |
49 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
50 | struct drm_minor *minor = node->minor; | |
51 | struct drm_device *dev = minor->dev; | |
52 | struct drm_master *master = minor->master; | |
955b12de BG |
53 | if (!master) |
54 | return 0; | |
55 | ||
8410ea3b DA |
56 | if (master->unique) { |
57 | seq_printf(m, "%s %s %s\n", | |
9de1b51f | 58 | dev->driver->name, |
8410ea3b | 59 | dev_name(dev->dev), master->unique); |
955b12de | 60 | } else { |
8410ea3b | 61 | seq_printf(m, "%s %s\n", |
9de1b51f | 62 | dev->driver->name, dev_name(dev->dev)); |
955b12de | 63 | } |
955b12de BG |
64 | return 0; |
65 | } | |
66 | ||
67 | /** | |
68 | * Called when "/proc/dri/.../vm" is read. | |
69 | * | |
70 | * Prints information about all mappings in drm_device::maplist. | |
71 | */ | |
72 | int drm_vm_info(struct seq_file *m, void *data) | |
73 | { | |
74 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
75 | struct drm_device *dev = node->minor->dev; | |
1847a549 | 76 | struct drm_local_map *map; |
955b12de BG |
77 | struct drm_map_list *r_list; |
78 | ||
79 | /* Hardcoded from _DRM_FRAME_BUFFER, | |
80 | _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and | |
81 | _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ | |
82 | const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; | |
83 | const char *type; | |
84 | int i; | |
85 | ||
86 | mutex_lock(&dev->struct_mutex); | |
87 | seq_printf(m, "slot offset size type flags address mtrr\n\n"); | |
88 | i = 0; | |
89 | list_for_each_entry(r_list, &dev->maplist, head) { | |
90 | map = r_list->map; | |
91 | if (!map) | |
92 | continue; | |
93 | if (map->type < 0 || map->type > 5) | |
94 | type = "??"; | |
95 | else | |
96 | type = types[map->type]; | |
97 | ||
1847a549 | 98 | seq_printf(m, "%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%08lx ", |
955b12de | 99 | i, |
1847a549 | 100 | (unsigned long long)map->offset, |
955b12de BG |
101 | map->size, type, map->flags, |
102 | (unsigned long) r_list->user_token); | |
103 | if (map->mtrr < 0) | |
104 | seq_printf(m, "none\n"); | |
105 | else | |
106 | seq_printf(m, "%4d\n", map->mtrr); | |
107 | i++; | |
108 | } | |
109 | mutex_unlock(&dev->struct_mutex); | |
110 | return 0; | |
111 | } | |
112 | ||
955b12de BG |
113 | /** |
114 | * Called when "/proc/dri/.../bufs" is read. | |
115 | */ | |
116 | int drm_bufs_info(struct seq_file *m, void *data) | |
117 | { | |
118 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
119 | struct drm_device *dev = node->minor->dev; | |
120 | struct drm_device_dma *dma; | |
121 | int i, seg_pages; | |
122 | ||
123 | mutex_lock(&dev->struct_mutex); | |
124 | dma = dev->dma; | |
125 | if (!dma) { | |
126 | mutex_unlock(&dev->struct_mutex); | |
127 | return 0; | |
128 | } | |
129 | ||
130 | seq_printf(m, " o size count free segs pages kB\n\n"); | |
131 | for (i = 0; i <= DRM_MAX_ORDER; i++) { | |
132 | if (dma->bufs[i].buf_count) { | |
133 | seg_pages = dma->bufs[i].seg_count * (1 << dma->bufs[i].page_order); | |
134 | seq_printf(m, "%2d %8d %5d %5d %5d %5d %5ld\n", | |
135 | i, | |
136 | dma->bufs[i].buf_size, | |
137 | dma->bufs[i].buf_count, | |
b008c0fc | 138 | 0, |
955b12de BG |
139 | dma->bufs[i].seg_count, |
140 | seg_pages, | |
141 | seg_pages * PAGE_SIZE / 1024); | |
142 | } | |
143 | } | |
144 | seq_printf(m, "\n"); | |
145 | for (i = 0; i < dma->buf_count; i++) { | |
146 | if (i && !(i % 32)) | |
147 | seq_printf(m, "\n"); | |
148 | seq_printf(m, " %d", dma->buflist[i]->list); | |
149 | } | |
150 | seq_printf(m, "\n"); | |
151 | mutex_unlock(&dev->struct_mutex); | |
152 | return 0; | |
153 | } | |
154 | ||
955b12de BG |
155 | /** |
156 | * Called when "/proc/dri/.../clients" is read. | |
157 | * | |
158 | */ | |
159 | int drm_clients_info(struct seq_file *m, void *data) | |
160 | { | |
161 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
162 | struct drm_device *dev = node->minor->dev; | |
163 | struct drm_file *priv; | |
164 | ||
50d47cb3 CW |
165 | seq_printf(m, |
166 | "%20s %5s %3s master a %5s %10s\n", | |
167 | "command", | |
168 | "pid", | |
169 | "dev", | |
170 | "uid", | |
171 | "magic"); | |
172 | ||
173 | /* dev->filelist is sorted youngest first, but we want to present | |
174 | * oldest first (i.e. kernel, servers, clients), so walk backwardss. | |
175 | */ | |
955b12de | 176 | mutex_lock(&dev->struct_mutex); |
50d47cb3 CW |
177 | list_for_each_entry_reverse(priv, &dev->filelist, lhead) { |
178 | struct task_struct *task; | |
179 | ||
180 | rcu_read_lock(); /* locks pid_task()->comm */ | |
181 | task = pid_task(priv->pid, PIDTYPE_PID); | |
182 | seq_printf(m, "%20s %5d %3d %c %c %5d %10u\n", | |
183 | task ? task->comm : "<unknown>", | |
5fce5e0b | 184 | pid_vnr(priv->pid), |
50d47cb3 CW |
185 | priv->minor->index, |
186 | priv->is_master ? 'y' : 'n', | |
187 | priv->authenticated ? 'y' : 'n', | |
5fce5e0b | 188 | from_kuid_munged(seq_user_ns(m), priv->uid), |
5952fba5 | 189 | priv->magic); |
50d47cb3 | 190 | rcu_read_unlock(); |
955b12de BG |
191 | } |
192 | mutex_unlock(&dev->struct_mutex); | |
193 | return 0; | |
194 | } | |
195 | ||
196 | ||
b375de0b | 197 | static int drm_gem_one_name_info(int id, void *ptr, void *data) |
955b12de BG |
198 | { |
199 | struct drm_gem_object *obj = ptr; | |
200 | struct seq_file *m = data; | |
201 | ||
955b12de BG |
202 | seq_printf(m, "%6d %8zd %7d %8d\n", |
203 | obj->name, obj->size, | |
a8e11d1c | 204 | obj->handle_count, |
955b12de BG |
205 | atomic_read(&obj->refcount.refcount)); |
206 | return 0; | |
207 | } | |
208 | ||
209 | int drm_gem_name_info(struct seq_file *m, void *data) | |
210 | { | |
211 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
212 | struct drm_device *dev = node->minor->dev; | |
213 | ||
214 | seq_printf(m, " name size handles refcount\n"); | |
90254ac0 | 215 | |
cd4f013f | 216 | mutex_lock(&dev->object_name_lock); |
955b12de | 217 | idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m); |
cd4f013f | 218 | mutex_unlock(&dev->object_name_lock); |
90254ac0 | 219 | |
955b12de BG |
220 | return 0; |
221 | } |