Commit | Line | Data |
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28575f16 DV |
1 | /* |
2 | * Copyright (c) 2016 Intel Corporation | |
3 | * | |
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
5 | * documentation for any purpose is hereby granted without fee, provided that | |
6 | * the above copyright notice appear in all copies and that both that copyright | |
7 | * notice and this permission notice appear in supporting documentation, and | |
8 | * that the name of the copyright holders not be used in advertising or | |
9 | * publicity pertaining to distribution of the software without specific, | |
10 | * written prior permission. The copyright holders make no representations | |
11 | * about the suitability of this software for any purpose. It is provided "as | |
12 | * is" without express or implied warranty. | |
13 | * | |
14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | * OF THIS SOFTWARE. | |
21 | */ | |
22 | ||
23 | #include <drm/drm_mode_config.h> | |
24 | #include <drm/drmP.h> | |
25 | ||
26 | #include "drm_crtc_internal.h" | |
27 | #include "drm_internal.h" | |
28 | ||
29 | int drm_modeset_register_all(struct drm_device *dev) | |
30 | { | |
31 | int ret; | |
32 | ||
33 | ret = drm_plane_register_all(dev); | |
34 | if (ret) | |
35 | goto err_plane; | |
36 | ||
37 | ret = drm_crtc_register_all(dev); | |
38 | if (ret) | |
39 | goto err_crtc; | |
40 | ||
41 | ret = drm_encoder_register_all(dev); | |
42 | if (ret) | |
43 | goto err_encoder; | |
44 | ||
45 | ret = drm_connector_register_all(dev); | |
46 | if (ret) | |
47 | goto err_connector; | |
48 | ||
49 | return 0; | |
50 | ||
51 | err_connector: | |
52 | drm_encoder_unregister_all(dev); | |
53 | err_encoder: | |
54 | drm_crtc_unregister_all(dev); | |
55 | err_crtc: | |
56 | drm_plane_unregister_all(dev); | |
57 | err_plane: | |
58 | return ret; | |
59 | } | |
60 | ||
61 | void drm_modeset_unregister_all(struct drm_device *dev) | |
62 | { | |
63 | drm_connector_unregister_all(dev); | |
64 | drm_encoder_unregister_all(dev); | |
65 | drm_crtc_unregister_all(dev); | |
66 | drm_plane_unregister_all(dev); | |
67 | } | |
68 | ||
69 | /** | |
70 | * drm_mode_getresources - get graphics configuration | |
71 | * @dev: drm device for the ioctl | |
72 | * @data: data pointer for the ioctl | |
73 | * @file_priv: drm file for the ioctl call | |
74 | * | |
75 | * Construct a set of configuration description structures and return | |
76 | * them to the user, including CRTC, connector and framebuffer configuration. | |
77 | * | |
78 | * Called by the user via ioctl. | |
79 | * | |
80 | * Returns: | |
81 | * Zero on success, negative errno on failure. | |
82 | */ | |
83 | int drm_mode_getresources(struct drm_device *dev, void *data, | |
84 | struct drm_file *file_priv) | |
85 | { | |
86 | struct drm_mode_card_res *card_res = data; | |
28575f16 DV |
87 | struct drm_framebuffer *fb; |
88 | struct drm_connector *connector; | |
89 | struct drm_crtc *crtc; | |
90 | struct drm_encoder *encoder; | |
697cc9c8 | 91 | int count, ret = 0; |
28575f16 DV |
92 | uint32_t __user *fb_id; |
93 | uint32_t __user *crtc_id; | |
94 | uint32_t __user *connector_id; | |
95 | uint32_t __user *encoder_id; | |
96 | ||
97 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
98 | return -EINVAL; | |
99 | ||
100 | ||
101 | mutex_lock(&file_priv->fbs_lock); | |
697cc9c8 DV |
102 | count = 0; |
103 | fb_id = u64_to_user_ptr(card_res->fb_id_ptr); | |
104 | list_for_each_entry(fb, &file_priv->fbs, filp_head) { | |
105 | if (count < card_res->count_fbs && | |
106 | put_user(fb->base.id, fb_id + count)) { | |
107 | mutex_unlock(&file_priv->fbs_lock); | |
108 | return -EFAULT; | |
28575f16 | 109 | } |
697cc9c8 | 110 | count++; |
28575f16 | 111 | } |
697cc9c8 | 112 | card_res->count_fbs = count; |
28575f16 DV |
113 | mutex_unlock(&file_priv->fbs_lock); |
114 | ||
115 | /* mode_config.mutex protects the connector list against e.g. DP MST | |
116 | * connector hot-adding. CRTC/Plane lists are invariant. */ | |
117 | mutex_lock(&dev->mode_config.mutex); | |
28575f16 DV |
118 | card_res->max_height = dev->mode_config.max_height; |
119 | card_res->min_height = dev->mode_config.min_height; | |
120 | card_res->max_width = dev->mode_config.max_width; | |
121 | card_res->min_width = dev->mode_config.min_width; | |
122 | ||
697cc9c8 DV |
123 | count = 0; |
124 | crtc_id = u64_to_user_ptr(card_res->crtc_id_ptr); | |
125 | drm_for_each_crtc(crtc, dev) { | |
126 | if (count < card_res->count_crtcs && | |
127 | put_user(crtc->base.id, crtc_id + count)) { | |
128 | ret = -EFAULT; | |
129 | goto out; | |
28575f16 | 130 | } |
697cc9c8 | 131 | count++; |
28575f16 | 132 | } |
697cc9c8 DV |
133 | card_res->count_crtcs = count; |
134 | ||
135 | count = 0; | |
136 | encoder_id = u64_to_user_ptr(card_res->encoder_id_ptr); | |
137 | drm_for_each_encoder(encoder, dev) { | |
138 | if (count < card_res->count_encoders && | |
139 | put_user(encoder->base.id, encoder_id + count)) { | |
140 | ret = -EFAULT; | |
141 | goto out; | |
28575f16 | 142 | } |
697cc9c8 | 143 | count++; |
28575f16 | 144 | } |
697cc9c8 DV |
145 | card_res->count_encoders = count; |
146 | ||
147 | count = 0; | |
148 | connector_id = u64_to_user_ptr(card_res->connector_id_ptr); | |
149 | drm_for_each_connector(connector, dev) { | |
150 | if (count < card_res->count_connectors && | |
151 | put_user(connector->base.id, connector_id + count)) { | |
152 | ret = -EFAULT; | |
153 | goto out; | |
28575f16 | 154 | } |
697cc9c8 | 155 | count++; |
28575f16 | 156 | } |
697cc9c8 | 157 | card_res->count_connectors = count; |
28575f16 DV |
158 | |
159 | out: | |
160 | mutex_unlock(&dev->mode_config.mutex); | |
161 | return ret; | |
162 | } | |
163 | ||
164 | /** | |
165 | * drm_mode_config_reset - call ->reset callbacks | |
166 | * @dev: drm device | |
167 | * | |
168 | * This functions calls all the crtc's, encoder's and connector's ->reset | |
169 | * callback. Drivers can use this in e.g. their driver load or resume code to | |
170 | * reset hardware and software state. | |
171 | */ | |
172 | void drm_mode_config_reset(struct drm_device *dev) | |
173 | { | |
174 | struct drm_crtc *crtc; | |
175 | struct drm_plane *plane; | |
176 | struct drm_encoder *encoder; | |
177 | struct drm_connector *connector; | |
178 | ||
179 | drm_for_each_plane(plane, dev) | |
180 | if (plane->funcs->reset) | |
181 | plane->funcs->reset(plane); | |
182 | ||
183 | drm_for_each_crtc(crtc, dev) | |
184 | if (crtc->funcs->reset) | |
185 | crtc->funcs->reset(crtc); | |
186 | ||
187 | drm_for_each_encoder(encoder, dev) | |
188 | if (encoder->funcs->reset) | |
189 | encoder->funcs->reset(encoder); | |
190 | ||
191 | mutex_lock(&dev->mode_config.mutex); | |
192 | drm_for_each_connector(connector, dev) | |
193 | if (connector->funcs->reset) | |
194 | connector->funcs->reset(connector); | |
195 | mutex_unlock(&dev->mode_config.mutex); | |
196 | } | |
197 | EXPORT_SYMBOL(drm_mode_config_reset); | |
198 | ||
199 | /* | |
200 | * Global properties | |
201 | */ | |
202 | static const struct drm_prop_enum_list drm_plane_type_enum_list[] = { | |
203 | { DRM_PLANE_TYPE_OVERLAY, "Overlay" }, | |
204 | { DRM_PLANE_TYPE_PRIMARY, "Primary" }, | |
205 | { DRM_PLANE_TYPE_CURSOR, "Cursor" }, | |
206 | }; | |
207 | ||
208 | static int drm_mode_create_standard_properties(struct drm_device *dev) | |
209 | { | |
210 | struct drm_property *prop; | |
211 | int ret; | |
212 | ||
213 | ret = drm_connector_create_standard_properties(dev); | |
214 | if (ret) | |
215 | return ret; | |
216 | ||
217 | prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
218 | "type", drm_plane_type_enum_list, | |
219 | ARRAY_SIZE(drm_plane_type_enum_list)); | |
220 | if (!prop) | |
221 | return -ENOMEM; | |
222 | dev->mode_config.plane_type_property = prop; | |
223 | ||
224 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
225 | "SRC_X", 0, UINT_MAX); | |
226 | if (!prop) | |
227 | return -ENOMEM; | |
228 | dev->mode_config.prop_src_x = prop; | |
229 | ||
230 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
231 | "SRC_Y", 0, UINT_MAX); | |
232 | if (!prop) | |
233 | return -ENOMEM; | |
234 | dev->mode_config.prop_src_y = prop; | |
235 | ||
236 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
237 | "SRC_W", 0, UINT_MAX); | |
238 | if (!prop) | |
239 | return -ENOMEM; | |
240 | dev->mode_config.prop_src_w = prop; | |
241 | ||
242 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
243 | "SRC_H", 0, UINT_MAX); | |
244 | if (!prop) | |
245 | return -ENOMEM; | |
246 | dev->mode_config.prop_src_h = prop; | |
247 | ||
248 | prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, | |
249 | "CRTC_X", INT_MIN, INT_MAX); | |
250 | if (!prop) | |
251 | return -ENOMEM; | |
252 | dev->mode_config.prop_crtc_x = prop; | |
253 | ||
254 | prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, | |
255 | "CRTC_Y", INT_MIN, INT_MAX); | |
256 | if (!prop) | |
257 | return -ENOMEM; | |
258 | dev->mode_config.prop_crtc_y = prop; | |
259 | ||
260 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
261 | "CRTC_W", 0, INT_MAX); | |
262 | if (!prop) | |
263 | return -ENOMEM; | |
264 | dev->mode_config.prop_crtc_w = prop; | |
265 | ||
266 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
267 | "CRTC_H", 0, INT_MAX); | |
268 | if (!prop) | |
269 | return -ENOMEM; | |
270 | dev->mode_config.prop_crtc_h = prop; | |
271 | ||
272 | prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC, | |
273 | "FB_ID", DRM_MODE_OBJECT_FB); | |
274 | if (!prop) | |
275 | return -ENOMEM; | |
276 | dev->mode_config.prop_fb_id = prop; | |
277 | ||
96260142 GP |
278 | prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, |
279 | "IN_FENCE_FD", -1, INT_MAX); | |
280 | if (!prop) | |
281 | return -ENOMEM; | |
282 | dev->mode_config.prop_in_fence_fd = prop; | |
283 | ||
beaf5af4 GP |
284 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, |
285 | "OUT_FENCE_PTR", 0, U64_MAX); | |
286 | if (!prop) | |
287 | return -ENOMEM; | |
288 | dev->mode_config.prop_out_fence_ptr = prop; | |
289 | ||
28575f16 DV |
290 | prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC, |
291 | "CRTC_ID", DRM_MODE_OBJECT_CRTC); | |
292 | if (!prop) | |
293 | return -ENOMEM; | |
294 | dev->mode_config.prop_crtc_id = prop; | |
295 | ||
296 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC, | |
297 | "ACTIVE"); | |
298 | if (!prop) | |
299 | return -ENOMEM; | |
300 | dev->mode_config.prop_active = prop; | |
301 | ||
302 | prop = drm_property_create(dev, | |
303 | DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB, | |
304 | "MODE_ID", 0); | |
305 | if (!prop) | |
306 | return -ENOMEM; | |
307 | dev->mode_config.prop_mode_id = prop; | |
308 | ||
309 | prop = drm_property_create(dev, | |
310 | DRM_MODE_PROP_BLOB, | |
311 | "DEGAMMA_LUT", 0); | |
312 | if (!prop) | |
313 | return -ENOMEM; | |
314 | dev->mode_config.degamma_lut_property = prop; | |
315 | ||
316 | prop = drm_property_create_range(dev, | |
317 | DRM_MODE_PROP_IMMUTABLE, | |
318 | "DEGAMMA_LUT_SIZE", 0, UINT_MAX); | |
319 | if (!prop) | |
320 | return -ENOMEM; | |
321 | dev->mode_config.degamma_lut_size_property = prop; | |
322 | ||
323 | prop = drm_property_create(dev, | |
324 | DRM_MODE_PROP_BLOB, | |
325 | "CTM", 0); | |
326 | if (!prop) | |
327 | return -ENOMEM; | |
328 | dev->mode_config.ctm_property = prop; | |
329 | ||
330 | prop = drm_property_create(dev, | |
331 | DRM_MODE_PROP_BLOB, | |
332 | "GAMMA_LUT", 0); | |
333 | if (!prop) | |
334 | return -ENOMEM; | |
335 | dev->mode_config.gamma_lut_property = prop; | |
336 | ||
337 | prop = drm_property_create_range(dev, | |
338 | DRM_MODE_PROP_IMMUTABLE, | |
339 | "GAMMA_LUT_SIZE", 0, UINT_MAX); | |
340 | if (!prop) | |
341 | return -ENOMEM; | |
342 | dev->mode_config.gamma_lut_size_property = prop; | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
347 | /** | |
348 | * drm_mode_config_init - initialize DRM mode_configuration structure | |
349 | * @dev: DRM device | |
350 | * | |
351 | * Initialize @dev's mode_config structure, used for tracking the graphics | |
352 | * configuration of @dev. | |
353 | * | |
354 | * Since this initializes the modeset locks, no locking is possible. Which is no | |
355 | * problem, since this should happen single threaded at init time. It is the | |
356 | * driver's problem to ensure this guarantee. | |
357 | * | |
358 | */ | |
359 | void drm_mode_config_init(struct drm_device *dev) | |
360 | { | |
361 | mutex_init(&dev->mode_config.mutex); | |
362 | drm_modeset_lock_init(&dev->mode_config.connection_mutex); | |
363 | mutex_init(&dev->mode_config.idr_mutex); | |
364 | mutex_init(&dev->mode_config.fb_lock); | |
365 | mutex_init(&dev->mode_config.blob_lock); | |
366 | INIT_LIST_HEAD(&dev->mode_config.fb_list); | |
367 | INIT_LIST_HEAD(&dev->mode_config.crtc_list); | |
368 | INIT_LIST_HEAD(&dev->mode_config.connector_list); | |
369 | INIT_LIST_HEAD(&dev->mode_config.encoder_list); | |
370 | INIT_LIST_HEAD(&dev->mode_config.property_list); | |
371 | INIT_LIST_HEAD(&dev->mode_config.property_blob_list); | |
372 | INIT_LIST_HEAD(&dev->mode_config.plane_list); | |
373 | idr_init(&dev->mode_config.crtc_idr); | |
374 | idr_init(&dev->mode_config.tile_idr); | |
375 | ida_init(&dev->mode_config.connector_ida); | |
376 | ||
377 | drm_modeset_lock_all(dev); | |
378 | drm_mode_create_standard_properties(dev); | |
379 | drm_modeset_unlock_all(dev); | |
380 | ||
381 | /* Just to be sure */ | |
382 | dev->mode_config.num_fb = 0; | |
383 | dev->mode_config.num_connector = 0; | |
384 | dev->mode_config.num_crtc = 0; | |
385 | dev->mode_config.num_encoder = 0; | |
386 | dev->mode_config.num_overlay_plane = 0; | |
387 | dev->mode_config.num_total_plane = 0; | |
388 | } | |
389 | EXPORT_SYMBOL(drm_mode_config_init); | |
390 | ||
391 | /** | |
392 | * drm_mode_config_cleanup - free up DRM mode_config info | |
393 | * @dev: DRM device | |
394 | * | |
395 | * Free up all the connectors and CRTCs associated with this DRM device, then | |
396 | * free up the framebuffers and associated buffer objects. | |
397 | * | |
398 | * Note that since this /should/ happen single-threaded at driver/device | |
399 | * teardown time, no locking is required. It's the driver's job to ensure that | |
400 | * this guarantee actually holds true. | |
401 | * | |
402 | * FIXME: cleanup any dangling user buffer objects too | |
403 | */ | |
404 | void drm_mode_config_cleanup(struct drm_device *dev) | |
405 | { | |
406 | struct drm_connector *connector, *ot; | |
407 | struct drm_crtc *crtc, *ct; | |
408 | struct drm_encoder *encoder, *enct; | |
409 | struct drm_framebuffer *fb, *fbt; | |
410 | struct drm_property *property, *pt; | |
411 | struct drm_property_blob *blob, *bt; | |
412 | struct drm_plane *plane, *plt; | |
413 | ||
414 | list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, | |
415 | head) { | |
416 | encoder->funcs->destroy(encoder); | |
417 | } | |
418 | ||
419 | list_for_each_entry_safe(connector, ot, | |
420 | &dev->mode_config.connector_list, head) { | |
421 | connector->funcs->destroy(connector); | |
422 | } | |
423 | ||
424 | list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, | |
425 | head) { | |
426 | drm_property_destroy(dev, property); | |
427 | } | |
428 | ||
429 | list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, | |
430 | head) { | |
431 | plane->funcs->destroy(plane); | |
432 | } | |
433 | ||
434 | list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { | |
435 | crtc->funcs->destroy(crtc); | |
436 | } | |
437 | ||
438 | list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, | |
439 | head_global) { | |
440 | drm_property_unreference_blob(blob); | |
441 | } | |
442 | ||
443 | /* | |
444 | * Single-threaded teardown context, so it's not required to grab the | |
445 | * fb_lock to protect against concurrent fb_list access. Contrary, it | |
446 | * would actually deadlock with the drm_framebuffer_cleanup function. | |
447 | * | |
448 | * Also, if there are any framebuffers left, that's a driver leak now, | |
449 | * so politely WARN about this. | |
450 | */ | |
451 | WARN_ON(!list_empty(&dev->mode_config.fb_list)); | |
452 | list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { | |
453 | drm_framebuffer_free(&fb->base.refcount); | |
454 | } | |
455 | ||
456 | ida_destroy(&dev->mode_config.connector_ida); | |
457 | idr_destroy(&dev->mode_config.tile_idr); | |
458 | idr_destroy(&dev->mode_config.crtc_idr); | |
459 | drm_modeset_lock_fini(&dev->mode_config.connection_mutex); | |
460 | } | |
461 | EXPORT_SYMBOL(drm_mode_config_cleanup); |