Commit | Line | Data |
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28a62277 BG |
1 | /* |
2 | * Created: Sun Dec 21 13:08:50 2008 by bgamari@gmail.com | |
3 | * | |
4 | * Copyright 2008 Ben Gamari <bgamari@gmail.com> | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the "Software"), | |
8 | * to deal in the Software without restriction, including without limitation | |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
10 | * and/or sell copies of the Software, and to permit persons to whom the | |
11 | * Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice (including the next | |
14 | * paragraph) shall be included in all copies or substantial portions of the | |
15 | * Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
21 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
22 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
23 | * OTHER DEALINGS IN THE SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include <linux/debugfs.h> | |
0500c04e | 27 | #include <linux/export.h> |
28a62277 | 28 | #include <linux/seq_file.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
0500c04e | 30 | #include <linux/uaccess.h> |
4834442d | 31 | |
0500c04e SR |
32 | #include <drm/drm_atomic.h> |
33 | #include <drm/drm_auth.h> | |
e896c132 | 34 | #include <drm/drm_client.h> |
4834442d | 35 | #include <drm/drm_debugfs.h> |
0500c04e SR |
36 | #include <drm/drm_device.h> |
37 | #include <drm/drm_drv.h> | |
4cf2b281 | 38 | #include <drm/drm_edid.h> |
0500c04e | 39 | #include <drm/drm_file.h> |
c6fdea6e | 40 | #include <drm/drm_gem.h> |
4834442d | 41 | |
5bc9cb4d | 42 | #include "drm_crtc_internal.h" |
0500c04e | 43 | #include "drm_internal.h" |
28a62277 BG |
44 | |
45 | #if defined(CONFIG_DEBUG_FS) | |
46 | ||
47 | /*************************************************** | |
48 | * Initialization, etc. | |
49 | **************************************************/ | |
50 | ||
c6fdea6e DV |
51 | static int drm_name_info(struct seq_file *m, void *data) |
52 | { | |
53 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
54 | struct drm_minor *minor = node->minor; | |
55 | struct drm_device *dev = minor->dev; | |
56 | struct drm_master *master; | |
57 | ||
58 | mutex_lock(&dev->master_mutex); | |
59 | master = dev->master; | |
60 | seq_printf(m, "%s", dev->driver->name); | |
61 | if (dev->dev) | |
62 | seq_printf(m, " dev=%s", dev_name(dev->dev)); | |
63 | if (master && master->unique) | |
64 | seq_printf(m, " master=%s", master->unique); | |
65 | if (dev->unique) | |
66 | seq_printf(m, " unique=%s", dev->unique); | |
67 | seq_printf(m, "\n"); | |
68 | mutex_unlock(&dev->master_mutex); | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
73 | static int drm_clients_info(struct seq_file *m, void *data) | |
74 | { | |
75 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
76 | struct drm_device *dev = node->minor->dev; | |
77 | struct drm_file *priv; | |
78 | kuid_t uid; | |
79 | ||
80 | seq_printf(m, | |
81 | "%20s %5s %3s master a %5s %10s\n", | |
82 | "command", | |
83 | "pid", | |
84 | "dev", | |
85 | "uid", | |
86 | "magic"); | |
87 | ||
88 | /* dev->filelist is sorted youngest first, but we want to present | |
89 | * oldest first (i.e. kernel, servers, clients), so walk backwardss. | |
90 | */ | |
91 | mutex_lock(&dev->filelist_mutex); | |
92 | list_for_each_entry_reverse(priv, &dev->filelist, lhead) { | |
93 | struct task_struct *task; | |
94 | ||
95 | rcu_read_lock(); /* locks pid_task()->comm */ | |
96 | task = pid_task(priv->pid, PIDTYPE_PID); | |
97 | uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID; | |
98 | seq_printf(m, "%20s %5d %3d %c %c %5d %10u\n", | |
99 | task ? task->comm : "<unknown>", | |
100 | pid_vnr(priv->pid), | |
101 | priv->minor->index, | |
102 | drm_is_current_master(priv) ? 'y' : 'n', | |
103 | priv->authenticated ? 'y' : 'n', | |
104 | from_kuid_munged(seq_user_ns(m), uid), | |
105 | priv->magic); | |
106 | rcu_read_unlock(); | |
107 | } | |
108 | mutex_unlock(&dev->filelist_mutex); | |
109 | return 0; | |
110 | } | |
111 | ||
112 | static int drm_gem_one_name_info(int id, void *ptr, void *data) | |
113 | { | |
114 | struct drm_gem_object *obj = ptr; | |
115 | struct seq_file *m = data; | |
116 | ||
117 | seq_printf(m, "%6d %8zd %7d %8d\n", | |
118 | obj->name, obj->size, | |
119 | obj->handle_count, | |
120 | kref_read(&obj->refcount)); | |
121 | return 0; | |
122 | } | |
123 | ||
124 | static int drm_gem_name_info(struct seq_file *m, void *data) | |
125 | { | |
126 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
127 | struct drm_device *dev = node->minor->dev; | |
128 | ||
129 | seq_printf(m, " name size handles refcount\n"); | |
130 | ||
131 | mutex_lock(&dev->object_name_lock); | |
132 | idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m); | |
133 | mutex_unlock(&dev->object_name_lock); | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
36f73b2f | 138 | static const struct drm_info_list drm_debugfs_list[] = { |
28a62277 | 139 | {"name", drm_name_info, 0}, |
28a62277 | 140 | {"clients", drm_clients_info, 0}, |
28a62277 | 141 | {"gem_names", drm_gem_name_info, DRIVER_GEM}, |
28a62277 BG |
142 | }; |
143 | #define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list) | |
144 | ||
145 | ||
146 | static int drm_debugfs_open(struct inode *inode, struct file *file) | |
147 | { | |
148 | struct drm_info_node *node = inode->i_private; | |
149 | ||
150 | return single_open(file, node->info_ent->show, node); | |
151 | } | |
152 | ||
153 | ||
154 | static const struct file_operations drm_debugfs_fops = { | |
155 | .owner = THIS_MODULE, | |
156 | .open = drm_debugfs_open, | |
157 | .read = seq_read, | |
158 | .llseek = seq_lseek, | |
159 | .release = single_release, | |
160 | }; | |
161 | ||
162 | ||
163 | /** | |
0cad7f71 DV |
164 | * drm_debugfs_create_files - Initialize a given set of debugfs files for DRM |
165 | * minor | |
166 | * @files: The array of files to create | |
167 | * @count: The number of files given | |
168 | * @root: DRI debugfs dir entry. | |
169 | * @minor: device minor number | |
28a62277 BG |
170 | * |
171 | * Create a given set of debugfs files represented by an array of | |
0cad7f71 | 172 | * &struct drm_info_list in the given root directory. These files will be removed |
086f2e5c | 173 | * automatically on drm_debugfs_cleanup(). |
28a62277 | 174 | */ |
7d74795b | 175 | int drm_debugfs_create_files(const struct drm_info_list *files, int count, |
28a62277 BG |
176 | struct dentry *root, struct drm_minor *minor) |
177 | { | |
178 | struct drm_device *dev = minor->dev; | |
28a62277 | 179 | struct drm_info_node *tmp; |
987d65d0 | 180 | int i; |
28a62277 BG |
181 | |
182 | for (i = 0; i < count; i++) { | |
183 | u32 features = files[i].driver_features; | |
184 | ||
185 | if (features != 0 && | |
186 | (dev->driver->driver_features & features) != features) | |
187 | continue; | |
188 | ||
9a298b2a | 189 | tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL); |
987d65d0 GKH |
190 | if (tmp == NULL) |
191 | continue; | |
28a62277 BG |
192 | |
193 | tmp->minor = minor; | |
987d65d0 GKH |
194 | tmp->dent = debugfs_create_file(files[i].name, |
195 | S_IFREG | S_IRUGO, root, tmp, | |
196 | &drm_debugfs_fops); | |
28a62277 | 197 | tmp->info_ent = &files[i]; |
b3e067c0 MS |
198 | |
199 | mutex_lock(&minor->debugfs_lock); | |
200 | list_add(&tmp->list, &minor->debugfs_list); | |
201 | mutex_unlock(&minor->debugfs_lock); | |
28a62277 BG |
202 | } |
203 | return 0; | |
28a62277 BG |
204 | } |
205 | EXPORT_SYMBOL(drm_debugfs_create_files); | |
206 | ||
28a62277 BG |
207 | int drm_debugfs_init(struct drm_minor *minor, int minor_id, |
208 | struct dentry *root) | |
209 | { | |
210 | struct drm_device *dev = minor->dev; | |
211 | char name[64]; | |
212 | int ret; | |
213 | ||
b3e067c0 MS |
214 | INIT_LIST_HEAD(&minor->debugfs_list); |
215 | mutex_init(&minor->debugfs_lock); | |
28a62277 BG |
216 | sprintf(name, "%d", minor_id); |
217 | minor->debugfs_root = debugfs_create_dir(name, root); | |
28a62277 BG |
218 | |
219 | ret = drm_debugfs_create_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES, | |
220 | minor->debugfs_root, minor); | |
221 | if (ret) { | |
222 | debugfs_remove(minor->debugfs_root); | |
223 | minor->debugfs_root = NULL; | |
224 | DRM_ERROR("Failed to create core drm debugfs files\n"); | |
225 | return ret; | |
226 | } | |
227 | ||
3c499ea0 | 228 | if (drm_drv_uses_atomic_modeset(dev)) { |
6559c901 RC |
229 | ret = drm_atomic_debugfs_init(minor); |
230 | if (ret) { | |
231 | DRM_ERROR("Failed to create atomic debugfs files\n"); | |
232 | return ret; | |
233 | } | |
234 | } | |
235 | ||
0c51ef86 NT |
236 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
237 | ret = drm_framebuffer_debugfs_init(minor); | |
238 | if (ret) { | |
239 | DRM_ERROR("Failed to create framebuffer debugfs file\n"); | |
240 | return ret; | |
241 | } | |
e896c132 NT |
242 | |
243 | ret = drm_client_debugfs_init(minor); | |
244 | if (ret) { | |
245 | DRM_ERROR("Failed to create client debugfs file\n"); | |
246 | return ret; | |
247 | } | |
45d58b40 NT |
248 | } |
249 | ||
28a62277 BG |
250 | if (dev->driver->debugfs_init) { |
251 | ret = dev->driver->debugfs_init(minor); | |
252 | if (ret) { | |
253 | DRM_ERROR("DRM: Driver failed to initialize " | |
156f5a78 | 254 | "/sys/kernel/debug/dri.\n"); |
28a62277 BG |
255 | return ret; |
256 | } | |
257 | } | |
258 | return 0; | |
259 | } | |
260 | ||
261 | ||
7d74795b | 262 | int drm_debugfs_remove_files(const struct drm_info_list *files, int count, |
28a62277 BG |
263 | struct drm_minor *minor) |
264 | { | |
265 | struct list_head *pos, *q; | |
266 | struct drm_info_node *tmp; | |
267 | int i; | |
268 | ||
b3e067c0 | 269 | mutex_lock(&minor->debugfs_lock); |
28a62277 | 270 | for (i = 0; i < count; i++) { |
b3e067c0 | 271 | list_for_each_safe(pos, q, &minor->debugfs_list) { |
28a62277 BG |
272 | tmp = list_entry(pos, struct drm_info_node, list); |
273 | if (tmp->info_ent == &files[i]) { | |
274 | debugfs_remove(tmp->dent); | |
275 | list_del(pos); | |
9a298b2a | 276 | kfree(tmp); |
28a62277 BG |
277 | } |
278 | } | |
279 | } | |
b3e067c0 | 280 | mutex_unlock(&minor->debugfs_lock); |
28a62277 BG |
281 | return 0; |
282 | } | |
283 | EXPORT_SYMBOL(drm_debugfs_remove_files); | |
284 | ||
086f2e5c NT |
285 | static void drm_debugfs_remove_all_files(struct drm_minor *minor) |
286 | { | |
287 | struct drm_info_node *node, *tmp; | |
288 | ||
289 | mutex_lock(&minor->debugfs_lock); | |
290 | list_for_each_entry_safe(node, tmp, &minor->debugfs_list, list) { | |
291 | debugfs_remove(node->dent); | |
292 | list_del(&node->list); | |
293 | kfree(node); | |
294 | } | |
295 | mutex_unlock(&minor->debugfs_lock); | |
296 | } | |
297 | ||
b792e640 | 298 | void drm_debugfs_cleanup(struct drm_minor *minor) |
28a62277 | 299 | { |
28a62277 | 300 | if (!minor->debugfs_root) |
b792e640 | 301 | return; |
28a62277 | 302 | |
086f2e5c | 303 | drm_debugfs_remove_all_files(minor); |
28a62277 | 304 | |
086f2e5c | 305 | debugfs_remove_recursive(minor->debugfs_root); |
28a62277 | 306 | minor->debugfs_root = NULL; |
28a62277 BG |
307 | } |
308 | ||
30f65707 TW |
309 | static int connector_show(struct seq_file *m, void *data) |
310 | { | |
311 | struct drm_connector *connector = m->private; | |
30f65707 | 312 | |
6140cf20 | 313 | seq_printf(m, "%s\n", drm_get_connector_force_name(connector->force)); |
30f65707 TW |
314 | |
315 | return 0; | |
316 | } | |
317 | ||
318 | static int connector_open(struct inode *inode, struct file *file) | |
319 | { | |
320 | struct drm_connector *dev = inode->i_private; | |
321 | ||
322 | return single_open(file, connector_show, dev); | |
323 | } | |
324 | ||
325 | static ssize_t connector_write(struct file *file, const char __user *ubuf, | |
326 | size_t len, loff_t *offp) | |
327 | { | |
328 | struct seq_file *m = file->private_data; | |
329 | struct drm_connector *connector = m->private; | |
330 | char buf[12]; | |
331 | ||
332 | if (len > sizeof(buf) - 1) | |
333 | return -EINVAL; | |
334 | ||
335 | if (copy_from_user(buf, ubuf, len)) | |
336 | return -EFAULT; | |
337 | ||
338 | buf[len] = '\0'; | |
339 | ||
340 | if (!strcmp(buf, "on")) | |
341 | connector->force = DRM_FORCE_ON; | |
342 | else if (!strcmp(buf, "digital")) | |
343 | connector->force = DRM_FORCE_ON_DIGITAL; | |
344 | else if (!strcmp(buf, "off")) | |
345 | connector->force = DRM_FORCE_OFF; | |
346 | else if (!strcmp(buf, "unspecified")) | |
347 | connector->force = DRM_FORCE_UNSPECIFIED; | |
348 | else | |
349 | return -EINVAL; | |
350 | ||
351 | return len; | |
352 | } | |
353 | ||
4cf2b281 TW |
354 | static int edid_show(struct seq_file *m, void *data) |
355 | { | |
356 | struct drm_connector *connector = m->private; | |
357 | struct drm_property_blob *edid = connector->edid_blob_ptr; | |
358 | ||
359 | if (connector->override_edid && edid) | |
360 | seq_write(m, edid->data, edid->length); | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | static int edid_open(struct inode *inode, struct file *file) | |
366 | { | |
367 | struct drm_connector *dev = inode->i_private; | |
368 | ||
369 | return single_open(file, edid_show, dev); | |
370 | } | |
371 | ||
372 | static ssize_t edid_write(struct file *file, const char __user *ubuf, | |
373 | size_t len, loff_t *offp) | |
374 | { | |
375 | struct seq_file *m = file->private_data; | |
376 | struct drm_connector *connector = m->private; | |
377 | char *buf; | |
378 | struct edid *edid; | |
379 | int ret; | |
380 | ||
381 | buf = memdup_user(ubuf, len); | |
382 | if (IS_ERR(buf)) | |
383 | return PTR_ERR(buf); | |
384 | ||
385 | edid = (struct edid *) buf; | |
386 | ||
387 | if (len == 5 && !strncmp(buf, "reset", 5)) { | |
388 | connector->override_edid = false; | |
c555f023 | 389 | ret = drm_connector_update_edid_property(connector, NULL); |
4cf2b281 TW |
390 | } else if (len < EDID_LENGTH || |
391 | EDID_LENGTH * (1 + edid->extensions) > len) | |
392 | ret = -EINVAL; | |
393 | else { | |
394 | connector->override_edid = false; | |
c555f023 | 395 | ret = drm_connector_update_edid_property(connector, edid); |
4cf2b281 TW |
396 | if (!ret) |
397 | connector->override_edid = true; | |
398 | } | |
399 | ||
400 | kfree(buf); | |
401 | ||
402 | return (ret) ? ret : len; | |
403 | } | |
404 | ||
405 | static const struct file_operations drm_edid_fops = { | |
406 | .owner = THIS_MODULE, | |
407 | .open = edid_open, | |
408 | .read = seq_read, | |
409 | .llseek = seq_lseek, | |
410 | .release = single_release, | |
411 | .write = edid_write | |
412 | }; | |
413 | ||
414 | ||
30f65707 TW |
415 | static const struct file_operations drm_connector_fops = { |
416 | .owner = THIS_MODULE, | |
417 | .open = connector_open, | |
418 | .read = seq_read, | |
419 | .llseek = seq_lseek, | |
420 | .release = single_release, | |
421 | .write = connector_write | |
422 | }; | |
423 | ||
b792e640 | 424 | void drm_debugfs_connector_add(struct drm_connector *connector) |
30f65707 TW |
425 | { |
426 | struct drm_minor *minor = connector->dev->primary; | |
b792e640 | 427 | struct dentry *root; |
30f65707 TW |
428 | |
429 | if (!minor->debugfs_root) | |
b792e640 | 430 | return; |
30f65707 TW |
431 | |
432 | root = debugfs_create_dir(connector->name, minor->debugfs_root); | |
30f65707 TW |
433 | connector->debugfs_entry = root; |
434 | ||
435 | /* force */ | |
b792e640 GKH |
436 | debugfs_create_file("force", S_IRUGO | S_IWUSR, root, connector, |
437 | &drm_connector_fops); | |
30f65707 | 438 | |
4cf2b281 | 439 | /* edid */ |
b792e640 GKH |
440 | debugfs_create_file("edid_override", S_IRUGO | S_IWUSR, root, connector, |
441 | &drm_edid_fops); | |
30f65707 TW |
442 | } |
443 | ||
444 | void drm_debugfs_connector_remove(struct drm_connector *connector) | |
445 | { | |
446 | if (!connector->debugfs_entry) | |
447 | return; | |
448 | ||
449 | debugfs_remove_recursive(connector->debugfs_entry); | |
450 | ||
451 | connector->debugfs_entry = NULL; | |
452 | } | |
453 | ||
b792e640 | 454 | void drm_debugfs_crtc_add(struct drm_crtc *crtc) |
9edbf1fa TV |
455 | { |
456 | struct drm_minor *minor = crtc->dev->primary; | |
457 | struct dentry *root; | |
458 | char *name; | |
459 | ||
460 | name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index); | |
461 | if (!name) | |
b792e640 | 462 | return; |
9edbf1fa TV |
463 | |
464 | root = debugfs_create_dir(name, minor->debugfs_root); | |
465 | kfree(name); | |
9edbf1fa TV |
466 | |
467 | crtc->debugfs_entry = root; | |
468 | ||
b792e640 | 469 | drm_debugfs_crtc_crc_add(crtc); |
9edbf1fa TV |
470 | } |
471 | ||
472 | void drm_debugfs_crtc_remove(struct drm_crtc *crtc) | |
473 | { | |
474 | debugfs_remove_recursive(crtc->debugfs_entry); | |
475 | crtc->debugfs_entry = NULL; | |
476 | } | |
477 | ||
478 | #endif /* CONFIG_DEBUG_FS */ |