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> | |
27 | #include <linux/seq_file.h> | |
5a0e3ad6 | 28 | #include <linux/slab.h> |
2d1a8a48 | 29 | #include <linux/export.h> |
4834442d DV |
30 | |
31 | #include <drm/drm_debugfs.h> | |
4cf2b281 | 32 | #include <drm/drm_edid.h> |
6559c901 | 33 | #include <drm/drm_atomic.h> |
4834442d DV |
34 | #include <drm/drmP.h> |
35 | ||
67d0ec4e | 36 | #include "drm_internal.h" |
5bc9cb4d | 37 | #include "drm_crtc_internal.h" |
28a62277 BG |
38 | |
39 | #if defined(CONFIG_DEBUG_FS) | |
40 | ||
41 | /*************************************************** | |
42 | * Initialization, etc. | |
43 | **************************************************/ | |
44 | ||
36f73b2f | 45 | static const struct drm_info_list drm_debugfs_list[] = { |
28a62277 | 46 | {"name", drm_name_info, 0}, |
28a62277 | 47 | {"clients", drm_clients_info, 0}, |
28a62277 | 48 | {"gem_names", drm_gem_name_info, DRIVER_GEM}, |
28a62277 BG |
49 | }; |
50 | #define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list) | |
51 | ||
52 | ||
53 | static int drm_debugfs_open(struct inode *inode, struct file *file) | |
54 | { | |
55 | struct drm_info_node *node = inode->i_private; | |
56 | ||
57 | return single_open(file, node->info_ent->show, node); | |
58 | } | |
59 | ||
60 | ||
61 | static const struct file_operations drm_debugfs_fops = { | |
62 | .owner = THIS_MODULE, | |
63 | .open = drm_debugfs_open, | |
64 | .read = seq_read, | |
65 | .llseek = seq_lseek, | |
66 | .release = single_release, | |
67 | }; | |
68 | ||
69 | ||
70 | /** | |
0cad7f71 DV |
71 | * drm_debugfs_create_files - Initialize a given set of debugfs files for DRM |
72 | * minor | |
73 | * @files: The array of files to create | |
74 | * @count: The number of files given | |
75 | * @root: DRI debugfs dir entry. | |
76 | * @minor: device minor number | |
28a62277 BG |
77 | * |
78 | * Create a given set of debugfs files represented by an array of | |
0cad7f71 | 79 | * &struct drm_info_list in the given root directory. These files will be removed |
086f2e5c | 80 | * automatically on drm_debugfs_cleanup(). |
28a62277 | 81 | */ |
7d74795b | 82 | int drm_debugfs_create_files(const struct drm_info_list *files, int count, |
28a62277 BG |
83 | struct dentry *root, struct drm_minor *minor) |
84 | { | |
85 | struct drm_device *dev = minor->dev; | |
86 | struct dentry *ent; | |
87 | struct drm_info_node *tmp; | |
28a62277 BG |
88 | int i, ret; |
89 | ||
90 | for (i = 0; i < count; i++) { | |
91 | u32 features = files[i].driver_features; | |
92 | ||
93 | if (features != 0 && | |
94 | (dev->driver->driver_features & features) != features) | |
95 | continue; | |
96 | ||
9a298b2a | 97 | tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL); |
d25e3a6f JS |
98 | if (tmp == NULL) { |
99 | ret = -1; | |
100 | goto fail; | |
101 | } | |
28a62277 BG |
102 | ent = debugfs_create_file(files[i].name, S_IFREG | S_IRUGO, |
103 | root, tmp, &drm_debugfs_fops); | |
104 | if (!ent) { | |
bcd599e7 AV |
105 | DRM_ERROR("Cannot create /sys/kernel/debug/dri/%pd/%s\n", |
106 | root, files[i].name); | |
9a298b2a | 107 | kfree(tmp); |
28a62277 BG |
108 | ret = -1; |
109 | goto fail; | |
110 | } | |
111 | ||
112 | tmp->minor = minor; | |
113 | tmp->dent = ent; | |
114 | tmp->info_ent = &files[i]; | |
b3e067c0 MS |
115 | |
116 | mutex_lock(&minor->debugfs_lock); | |
117 | list_add(&tmp->list, &minor->debugfs_list); | |
118 | mutex_unlock(&minor->debugfs_lock); | |
28a62277 BG |
119 | } |
120 | return 0; | |
121 | ||
122 | fail: | |
123 | drm_debugfs_remove_files(files, count, minor); | |
124 | return ret; | |
125 | } | |
126 | EXPORT_SYMBOL(drm_debugfs_create_files); | |
127 | ||
28a62277 BG |
128 | int drm_debugfs_init(struct drm_minor *minor, int minor_id, |
129 | struct dentry *root) | |
130 | { | |
131 | struct drm_device *dev = minor->dev; | |
132 | char name[64]; | |
133 | int ret; | |
134 | ||
b3e067c0 MS |
135 | INIT_LIST_HEAD(&minor->debugfs_list); |
136 | mutex_init(&minor->debugfs_lock); | |
28a62277 BG |
137 | sprintf(name, "%d", minor_id); |
138 | minor->debugfs_root = debugfs_create_dir(name, root); | |
139 | if (!minor->debugfs_root) { | |
156f5a78 | 140 | DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s\n", name); |
28a62277 BG |
141 | return -1; |
142 | } | |
143 | ||
144 | ret = drm_debugfs_create_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES, | |
145 | minor->debugfs_root, minor); | |
146 | if (ret) { | |
147 | debugfs_remove(minor->debugfs_root); | |
148 | minor->debugfs_root = NULL; | |
149 | DRM_ERROR("Failed to create core drm debugfs files\n"); | |
150 | return ret; | |
151 | } | |
152 | ||
6559c901 RC |
153 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
154 | ret = drm_atomic_debugfs_init(minor); | |
155 | if (ret) { | |
156 | DRM_ERROR("Failed to create atomic debugfs files\n"); | |
157 | return ret; | |
158 | } | |
159 | } | |
160 | ||
0c51ef86 NT |
161 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
162 | ret = drm_framebuffer_debugfs_init(minor); | |
163 | if (ret) { | |
164 | DRM_ERROR("Failed to create framebuffer debugfs file\n"); | |
165 | return ret; | |
166 | } | |
45d58b40 NT |
167 | } |
168 | ||
28a62277 BG |
169 | if (dev->driver->debugfs_init) { |
170 | ret = dev->driver->debugfs_init(minor); | |
171 | if (ret) { | |
172 | DRM_ERROR("DRM: Driver failed to initialize " | |
156f5a78 | 173 | "/sys/kernel/debug/dri.\n"); |
28a62277 BG |
174 | return ret; |
175 | } | |
176 | } | |
177 | return 0; | |
178 | } | |
179 | ||
180 | ||
7d74795b | 181 | int drm_debugfs_remove_files(const struct drm_info_list *files, int count, |
28a62277 BG |
182 | struct drm_minor *minor) |
183 | { | |
184 | struct list_head *pos, *q; | |
185 | struct drm_info_node *tmp; | |
186 | int i; | |
187 | ||
b3e067c0 | 188 | mutex_lock(&minor->debugfs_lock); |
28a62277 | 189 | for (i = 0; i < count; i++) { |
b3e067c0 | 190 | list_for_each_safe(pos, q, &minor->debugfs_list) { |
28a62277 BG |
191 | tmp = list_entry(pos, struct drm_info_node, list); |
192 | if (tmp->info_ent == &files[i]) { | |
193 | debugfs_remove(tmp->dent); | |
194 | list_del(pos); | |
9a298b2a | 195 | kfree(tmp); |
28a62277 BG |
196 | } |
197 | } | |
198 | } | |
b3e067c0 | 199 | mutex_unlock(&minor->debugfs_lock); |
28a62277 BG |
200 | return 0; |
201 | } | |
202 | EXPORT_SYMBOL(drm_debugfs_remove_files); | |
203 | ||
086f2e5c NT |
204 | static void drm_debugfs_remove_all_files(struct drm_minor *minor) |
205 | { | |
206 | struct drm_info_node *node, *tmp; | |
207 | ||
208 | mutex_lock(&minor->debugfs_lock); | |
209 | list_for_each_entry_safe(node, tmp, &minor->debugfs_list, list) { | |
210 | debugfs_remove(node->dent); | |
211 | list_del(&node->list); | |
212 | kfree(node); | |
213 | } | |
214 | mutex_unlock(&minor->debugfs_lock); | |
215 | } | |
216 | ||
28a62277 BG |
217 | int drm_debugfs_cleanup(struct drm_minor *minor) |
218 | { | |
28a62277 BG |
219 | if (!minor->debugfs_root) |
220 | return 0; | |
221 | ||
086f2e5c | 222 | drm_debugfs_remove_all_files(minor); |
28a62277 | 223 | |
086f2e5c | 224 | debugfs_remove_recursive(minor->debugfs_root); |
28a62277 BG |
225 | minor->debugfs_root = NULL; |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
30f65707 TW |
230 | static int connector_show(struct seq_file *m, void *data) |
231 | { | |
232 | struct drm_connector *connector = m->private; | |
30f65707 | 233 | |
6140cf20 | 234 | seq_printf(m, "%s\n", drm_get_connector_force_name(connector->force)); |
30f65707 TW |
235 | |
236 | return 0; | |
237 | } | |
238 | ||
239 | static int connector_open(struct inode *inode, struct file *file) | |
240 | { | |
241 | struct drm_connector *dev = inode->i_private; | |
242 | ||
243 | return single_open(file, connector_show, dev); | |
244 | } | |
245 | ||
246 | static ssize_t connector_write(struct file *file, const char __user *ubuf, | |
247 | size_t len, loff_t *offp) | |
248 | { | |
249 | struct seq_file *m = file->private_data; | |
250 | struct drm_connector *connector = m->private; | |
251 | char buf[12]; | |
252 | ||
253 | if (len > sizeof(buf) - 1) | |
254 | return -EINVAL; | |
255 | ||
256 | if (copy_from_user(buf, ubuf, len)) | |
257 | return -EFAULT; | |
258 | ||
259 | buf[len] = '\0'; | |
260 | ||
261 | if (!strcmp(buf, "on")) | |
262 | connector->force = DRM_FORCE_ON; | |
263 | else if (!strcmp(buf, "digital")) | |
264 | connector->force = DRM_FORCE_ON_DIGITAL; | |
265 | else if (!strcmp(buf, "off")) | |
266 | connector->force = DRM_FORCE_OFF; | |
267 | else if (!strcmp(buf, "unspecified")) | |
268 | connector->force = DRM_FORCE_UNSPECIFIED; | |
269 | else | |
270 | return -EINVAL; | |
271 | ||
272 | return len; | |
273 | } | |
274 | ||
4cf2b281 TW |
275 | static int edid_show(struct seq_file *m, void *data) |
276 | { | |
277 | struct drm_connector *connector = m->private; | |
278 | struct drm_property_blob *edid = connector->edid_blob_ptr; | |
279 | ||
280 | if (connector->override_edid && edid) | |
281 | seq_write(m, edid->data, edid->length); | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | static int edid_open(struct inode *inode, struct file *file) | |
287 | { | |
288 | struct drm_connector *dev = inode->i_private; | |
289 | ||
290 | return single_open(file, edid_show, dev); | |
291 | } | |
292 | ||
293 | static ssize_t edid_write(struct file *file, const char __user *ubuf, | |
294 | size_t len, loff_t *offp) | |
295 | { | |
296 | struct seq_file *m = file->private_data; | |
297 | struct drm_connector *connector = m->private; | |
298 | char *buf; | |
299 | struct edid *edid; | |
300 | int ret; | |
301 | ||
302 | buf = memdup_user(ubuf, len); | |
303 | if (IS_ERR(buf)) | |
304 | return PTR_ERR(buf); | |
305 | ||
306 | edid = (struct edid *) buf; | |
307 | ||
308 | if (len == 5 && !strncmp(buf, "reset", 5)) { | |
309 | connector->override_edid = false; | |
310 | ret = drm_mode_connector_update_edid_property(connector, NULL); | |
311 | } else if (len < EDID_LENGTH || | |
312 | EDID_LENGTH * (1 + edid->extensions) > len) | |
313 | ret = -EINVAL; | |
314 | else { | |
315 | connector->override_edid = false; | |
316 | ret = drm_mode_connector_update_edid_property(connector, edid); | |
317 | if (!ret) | |
318 | connector->override_edid = true; | |
319 | } | |
320 | ||
321 | kfree(buf); | |
322 | ||
323 | return (ret) ? ret : len; | |
324 | } | |
325 | ||
326 | static const struct file_operations drm_edid_fops = { | |
327 | .owner = THIS_MODULE, | |
328 | .open = edid_open, | |
329 | .read = seq_read, | |
330 | .llseek = seq_lseek, | |
331 | .release = single_release, | |
332 | .write = edid_write | |
333 | }; | |
334 | ||
335 | ||
30f65707 TW |
336 | static const struct file_operations drm_connector_fops = { |
337 | .owner = THIS_MODULE, | |
338 | .open = connector_open, | |
339 | .read = seq_read, | |
340 | .llseek = seq_lseek, | |
341 | .release = single_release, | |
342 | .write = connector_write | |
343 | }; | |
344 | ||
345 | int drm_debugfs_connector_add(struct drm_connector *connector) | |
346 | { | |
347 | struct drm_minor *minor = connector->dev->primary; | |
348 | struct dentry *root, *ent; | |
349 | ||
350 | if (!minor->debugfs_root) | |
351 | return -1; | |
352 | ||
353 | root = debugfs_create_dir(connector->name, minor->debugfs_root); | |
354 | if (!root) | |
355 | return -ENOMEM; | |
356 | ||
357 | connector->debugfs_entry = root; | |
358 | ||
359 | /* force */ | |
360 | ent = debugfs_create_file("force", S_IRUGO | S_IWUSR, root, connector, | |
361 | &drm_connector_fops); | |
362 | if (!ent) | |
363 | goto error; | |
364 | ||
4cf2b281 TW |
365 | /* edid */ |
366 | ent = debugfs_create_file("edid_override", S_IRUGO | S_IWUSR, root, | |
367 | connector, &drm_edid_fops); | |
368 | if (!ent) | |
369 | goto error; | |
370 | ||
30f65707 TW |
371 | return 0; |
372 | ||
373 | error: | |
374 | debugfs_remove_recursive(connector->debugfs_entry); | |
375 | connector->debugfs_entry = NULL; | |
376 | return -ENOMEM; | |
377 | } | |
378 | ||
379 | void drm_debugfs_connector_remove(struct drm_connector *connector) | |
380 | { | |
381 | if (!connector->debugfs_entry) | |
382 | return; | |
383 | ||
384 | debugfs_remove_recursive(connector->debugfs_entry); | |
385 | ||
386 | connector->debugfs_entry = NULL; | |
387 | } | |
388 | ||
9edbf1fa TV |
389 | int drm_debugfs_crtc_add(struct drm_crtc *crtc) |
390 | { | |
391 | struct drm_minor *minor = crtc->dev->primary; | |
392 | struct dentry *root; | |
393 | char *name; | |
394 | ||
395 | name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index); | |
396 | if (!name) | |
397 | return -ENOMEM; | |
398 | ||
399 | root = debugfs_create_dir(name, minor->debugfs_root); | |
400 | kfree(name); | |
401 | if (!root) | |
402 | return -ENOMEM; | |
403 | ||
404 | crtc->debugfs_entry = root; | |
405 | ||
406 | if (drm_debugfs_crtc_crc_add(crtc)) | |
407 | goto error; | |
28a62277 | 408 | |
9edbf1fa TV |
409 | return 0; |
410 | ||
411 | error: | |
412 | drm_debugfs_crtc_remove(crtc); | |
413 | return -ENOMEM; | |
414 | } | |
415 | ||
416 | void drm_debugfs_crtc_remove(struct drm_crtc *crtc) | |
417 | { | |
418 | debugfs_remove_recursive(crtc->debugfs_entry); | |
419 | crtc->debugfs_entry = NULL; | |
420 | } | |
421 | ||
422 | #endif /* CONFIG_DEBUG_FS */ |