1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation |
3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> |
4 | * Copyright (c) 2008 Red Hat Inc. |
5 | * |
6 | * DRM core CRTC related functions |
7 | * |
8 | * Permission to use, copy, modify, distribute, and sell this software and its |
9 | * documentation for any purpose is hereby granted without fee, provided that |
10 | * the above copyright notice appear in all copies and that both that copyright |
11 | * notice and this permission notice appear in supporting documentation, and |
12 | * that the name of the copyright holders not be used in advertising or |
13 | * publicity pertaining to distribution of the software without specific, |
14 | * written prior permission. The copyright holders make no representations |
15 | * about the suitability of this software for any purpose. It is provided "as |
16 | * is" without express or implied warranty. |
17 | * |
18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
24 | * OF THIS SOFTWARE. |
25 | * |
26 | * Authors: |
27 | * Keith Packard |
28 | * Eric Anholt <eric@anholt.net> |
29 | * Dave Airlie <airlied@linux.ie> |
30 | * Jesse Barnes <jesse.barnes@intel.com> |
31 | */ |
32 | #include <linux/err.h> |
33 | #include <linux/spinlock.h> |
34 | #include <linux/ctype.h> |
35 | #include <linux/list.h> |
36 | #include <linux/slab.h> |
37 | #include <linux/export.h> |
38 | #include <linux/errno.h> |
39 | #include <asm/bug.h> |
40 | #include <drm/drmP.h> |
41 | #include <drm/drm_crtc.h> |
42 | #include <drm/drm_edid.h> |
43 | #include <drm/drm_fourcc.h> |
44 | |
45 | #include "drm_crtc_internal.h" |
46 | |
47 | /** |
48 | * drm_modeset_lock_all - take all modeset locks |
49 | * @dev: drm device |
50 | * |
51 | * This function takes all modeset locks, suitable where a more fine-grained |
52 | * scheme isn't (yet) implemented. Locks must be dropped with |
53 | * drm_modeset_unlock_all. |
54 | */ |
55 | void drm_modeset_lock_all(struct drm_device *dev) |
56 | { |
57 | struct drm_crtc *crtc; |
58 | |
59 | mutex_lock(&dev->mode_config.mutex); |
60 | |
61 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
62 | mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); |
63 | } |
64 | EXPORT_SYMBOL(drm_modeset_lock_all); |
65 | |
66 | /** |
67 | * drm_modeset_unlock_all - drop all modeset locks |
68 | * @dev: device |
69 | * |
70 | * This function drop all modeset locks taken by drm_modeset_lock_all. |
71 | */ |
72 | void drm_modeset_unlock_all(struct drm_device *dev) |
73 | { |
74 | struct drm_crtc *crtc; |
75 | |
76 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
77 | mutex_unlock(&crtc->mutex); |
78 | |
79 | mutex_unlock(&dev->mode_config.mutex); |
80 | } |
81 | EXPORT_SYMBOL(drm_modeset_unlock_all); |
82 | |
83 | /** |
84 | * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked |
85 | * @dev: device |
86 | * |
87 | * Useful as a debug assert. |
88 | */ |
89 | void drm_warn_on_modeset_not_all_locked(struct drm_device *dev) |
90 | { |
91 | struct drm_crtc *crtc; |
92 | |
93 | /* Locking is currently fubar in the panic handler. */ |
94 | if (oops_in_progress) |
95 | return; |
96 | |
97 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
98 | WARN_ON(!mutex_is_locked(&crtc->mutex)); |
99 | |
100 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
101 | } |
102 | EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked); |
103 | |
104 | /* Avoid boilerplate. I'm tired of typing. */ |
105 | #define DRM_ENUM_NAME_FN(fnname, list) \ |
106 | const char *fnname(int val) \ |
107 | { \ |
108 | int i; \ |
109 | for (i = 0; i < ARRAY_SIZE(list); i++) { \ |
110 | if (list[i].type == val) \ |
111 | return list[i].name; \ |
112 | } \ |
113 | return "(unknown)"; \ |
114 | } |
115 | |
116 | /* |
117 | * Global properties |
118 | */ |
119 | static const struct drm_prop_enum_list drm_dpms_enum_list[] = |
120 | { { DRM_MODE_DPMS_ON, "On" }, |
121 | { DRM_MODE_DPMS_STANDBY, "Standby" }, |
122 | { DRM_MODE_DPMS_SUSPEND, "Suspend" }, |
123 | { DRM_MODE_DPMS_OFF, "Off" } |
124 | }; |
125 | |
126 | DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) |
127 | |
128 | static const struct drm_prop_enum_list drm_plane_type_enum_list[] = |
129 | { |
130 | { DRM_PLANE_TYPE_OVERLAY, "Overlay" }, |
131 | { DRM_PLANE_TYPE_PRIMARY, "Primary" }, |
132 | { DRM_PLANE_TYPE_CURSOR, "Cursor" }, |
133 | }; |
134 | |
135 | /* |
136 | * Optional properties |
137 | */ |
138 | static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = |
139 | { |
140 | { DRM_MODE_SCALE_NONE, "None" }, |
141 | { DRM_MODE_SCALE_FULLSCREEN, "Full" }, |
142 | { DRM_MODE_SCALE_CENTER, "Center" }, |
143 | { DRM_MODE_SCALE_ASPECT, "Full aspect" }, |
144 | }; |
145 | |
146 | /* |
147 | * Non-global properties, but "required" for certain connectors. |
148 | */ |
149 | static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = |
150 | { |
151 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ |
152 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ |
153 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ |
154 | }; |
155 | |
156 | DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) |
157 | |
158 | static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = |
159 | { |
160 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ |
161 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ |
162 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ |
163 | }; |
164 | |
165 | DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, |
166 | drm_dvi_i_subconnector_enum_list) |
167 | |
168 | static const struct drm_prop_enum_list drm_tv_select_enum_list[] = |
169 | { |
170 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ |
171 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ |
172 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ |
173 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ |
174 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ |
175 | }; |
176 | |
177 | DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) |
178 | |
179 | static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = |
180 | { |
181 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ |
182 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ |
183 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ |
184 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ |
185 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ |
186 | }; |
187 | |
188 | DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, |
189 | drm_tv_subconnector_enum_list) |
190 | |
191 | static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = { |
192 | { DRM_MODE_DIRTY_OFF, "Off" }, |
193 | { DRM_MODE_DIRTY_ON, "On" }, |
194 | { DRM_MODE_DIRTY_ANNOTATE, "Annotate" }, |
195 | }; |
196 | |
197 | struct drm_conn_prop_enum_list { |
198 | int type; |
199 | const char *name; |
200 | struct ida ida; |
201 | }; |
202 | |
203 | /* |
204 | * Connector and encoder types. |
205 | */ |
206 | static struct drm_conn_prop_enum_list drm_connector_enum_list[] = |
207 | { { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, |
208 | { DRM_MODE_CONNECTOR_VGA, "VGA" }, |
209 | { DRM_MODE_CONNECTOR_DVII, "DVI-I" }, |
210 | { DRM_MODE_CONNECTOR_DVID, "DVI-D" }, |
211 | { DRM_MODE_CONNECTOR_DVIA, "DVI-A" }, |
212 | { DRM_MODE_CONNECTOR_Composite, "Composite" }, |
213 | { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" }, |
214 | { DRM_MODE_CONNECTOR_LVDS, "LVDS" }, |
215 | { DRM_MODE_CONNECTOR_Component, "Component" }, |
216 | { DRM_MODE_CONNECTOR_9PinDIN, "DIN" }, |
217 | { DRM_MODE_CONNECTOR_DisplayPort, "DP" }, |
218 | { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" }, |
219 | { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" }, |
220 | { DRM_MODE_CONNECTOR_TV, "TV" }, |
221 | { DRM_MODE_CONNECTOR_eDP, "eDP" }, |
222 | { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" }, |
223 | { DRM_MODE_CONNECTOR_DSI, "DSI" }, |
224 | }; |
225 | |
226 | static const struct drm_prop_enum_list drm_encoder_enum_list[] = |
227 | { { DRM_MODE_ENCODER_NONE, "None" }, |
228 | { DRM_MODE_ENCODER_DAC, "DAC" }, |
229 | { DRM_MODE_ENCODER_TMDS, "TMDS" }, |
230 | { DRM_MODE_ENCODER_LVDS, "LVDS" }, |
231 | { DRM_MODE_ENCODER_TVDAC, "TV" }, |
232 | { DRM_MODE_ENCODER_VIRTUAL, "Virtual" }, |
233 | { DRM_MODE_ENCODER_DSI, "DSI" }, |
234 | }; |
235 | |
236 | static const struct drm_prop_enum_list drm_subpixel_enum_list[] = |
237 | { |
238 | { SubPixelUnknown, "Unknown" }, |
239 | { SubPixelHorizontalRGB, "Horizontal RGB" }, |
240 | { SubPixelHorizontalBGR, "Horizontal BGR" }, |
241 | { SubPixelVerticalRGB, "Vertical RGB" }, |
242 | { SubPixelVerticalBGR, "Vertical BGR" }, |
243 | { SubPixelNone, "None" }, |
244 | }; |
245 | |
246 | void drm_connector_ida_init(void) |
247 | { |
248 | int i; |
249 | |
250 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) |
251 | ida_init(&drm_connector_enum_list[i].ida); |
252 | } |
253 | |
254 | void drm_connector_ida_destroy(void) |
255 | { |
256 | int i; |
257 | |
258 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) |
259 | ida_destroy(&drm_connector_enum_list[i].ida); |
260 | } |
261 | |
262 | /** |
263 | * drm_get_encoder_name - return a string for encoder |
264 | * @encoder: encoder to compute name of |
265 | * |
266 | * Note that the buffer used by this function is globally shared and owned by |
267 | * the function itself. |
268 | * |
269 | * FIXME: This isn't really multithreading safe. |
270 | */ |
271 | const char *drm_get_encoder_name(const struct drm_encoder *encoder) |
272 | { |
273 | static char buf[32]; |
274 | |
275 | snprintf(buf, 32, "%s-%d" , |
276 | drm_encoder_enum_list[encoder->encoder_type].name, |
277 | encoder->base.id); |
278 | return buf; |
279 | } |
280 | EXPORT_SYMBOL(drm_get_encoder_name); |
281 | |
282 | /** |
283 | * drm_get_connector_name - return a string for connector |
284 | * @connector: connector to compute name of |
285 | * |
286 | * Note that the buffer used by this function is globally shared and owned by |
287 | * the function itself. |
288 | * |
289 | * FIXME: This isn't really multithreading safe. |
290 | */ |
291 | const char *drm_get_connector_name(const struct drm_connector *connector) |
292 | { |
293 | static char buf[32]; |
294 | |
295 | snprintf(buf, 32, "%s-%d" , |
296 | drm_connector_enum_list[connector->connector_type].name, |
297 | connector->connector_type_id); |
298 | return buf; |
299 | } |
300 | EXPORT_SYMBOL(drm_get_connector_name); |
301 | |
302 | /** |
303 | * drm_get_connector_status_name - return a string for connector status |
304 | * @status: connector status to compute name of |
305 | * |
306 | * In contrast to the other drm_get_*_name functions this one here returns a |
307 | * const pointer and hence is threadsafe. |
308 | */ |
309 | const char *drm_get_connector_status_name(enum drm_connector_status status) |
310 | { |
311 | if (status == connector_status_connected) |
312 | return "connected" ; |
313 | else if (status == connector_status_disconnected) |
314 | return "disconnected" ; |
315 | else |
316 | return "unknown" ; |
317 | } |
318 | EXPORT_SYMBOL(drm_get_connector_status_name); |
319 | |
320 | /** |
321 | * drm_get_subpixel_order_name - return a string for a given subpixel enum |
322 | * @order: enum of subpixel_order |
323 | * |
324 | * Note you could abuse this and return something out of bounds, but that |
325 | * would be a caller error. No unscrubbed user data should make it here. |
326 | */ |
327 | const char *drm_get_subpixel_order_name(enum subpixel_order order) |
328 | { |
329 | return drm_subpixel_enum_list[order].name; |
330 | } |
331 | EXPORT_SYMBOL(drm_get_subpixel_order_name); |
332 | |
333 | static char printable_char(int c) |
334 | { |
335 | return isascii(c) && isprint(c) ? c : '?'; |
336 | } |
337 | |
338 | /** |
339 | * drm_get_format_name - return a string for drm fourcc format |
340 | * @format: format to compute name of |
341 | * |
342 | * Note that the buffer used by this function is globally shared and owned by |
343 | * the function itself. |
344 | * |
345 | * FIXME: This isn't really multithreading safe. |
346 | */ |
347 | const char *drm_get_format_name(uint32_t format) |
348 | { |
349 | static char buf[32]; |
350 | |
351 | snprintf(buf, sizeof(buf), |
352 | "%c%c%c%c %s-endian (0x%08x)" , |
353 | printable_char(format & 0xff), |
354 | printable_char((format >> 8) & 0xff), |
355 | printable_char((format >> 16) & 0xff), |
356 | printable_char((format >> 24) & 0x7f), |
357 | format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little" , |
358 | format); |
359 | |
360 | return buf; |
361 | } |
362 | EXPORT_SYMBOL(drm_get_format_name); |
363 | |
364 | /** |
365 | * drm_mode_object_get - allocate a new modeset identifier |
366 | * @dev: DRM device |
367 | * @obj: object pointer, used to generate unique ID |
368 | * @obj_type: object type |
369 | * |
370 | * Create a unique identifier based on @ptr in @dev's identifier space. Used |
371 | * for tracking modes, CRTCs and connectors. Note that despite the _get postfix |
372 | * modeset identifiers are _not_ reference counted. Hence don't use this for |
373 | * reference counted modeset objects like framebuffers. |
374 | * |
375 | * Returns: |
376 | * New unique (relative to other objects in @dev) integer identifier for the |
377 | * object. |
378 | */ |
379 | int drm_mode_object_get(struct drm_device *dev, |
380 | struct drm_mode_object *obj, uint32_t obj_type) |
381 | { |
382 | int ret; |
383 | |
384 | idr_preload(GFP_KERNEL); |
385 | mutex_lock(&dev->mode_config.idr_mutex); |
386 | ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL); |
387 | if (ret >= 0) { |
388 | /* |
389 | * Set up the object linking under the protection of the idr |
390 | * lock so that other users can't see inconsistent state. |
391 | */ |
392 | obj->id = ret; |
393 | obj->type = obj_type; |
394 | } |
395 | mutex_unlock(&dev->mode_config.idr_mutex); |
396 | idr_preload_end(); |
397 | |
398 | return ret < 0 ? ret : 0; |
399 | } |
400 | |
401 | /** |
402 | * drm_mode_object_put - free a modeset identifer |
403 | * @dev: DRM device |
404 | * @object: object to free |
405 | * |
406 | * Free @id from @dev's unique identifier pool. Note that despite the _get |
407 | * postfix modeset identifiers are _not_ reference counted. Hence don't use this |
408 | * for reference counted modeset objects like framebuffers. |
409 | */ |
410 | void drm_mode_object_put(struct drm_device *dev, |
411 | struct drm_mode_object *object) |
412 | { |
413 | mutex_lock(&dev->mode_config.idr_mutex); |
414 | idr_remove(&dev->mode_config.crtc_idr, object->id); |
415 | mutex_unlock(&dev->mode_config.idr_mutex); |
416 | } |
417 | |
418 | /** |
419 | * drm_mode_object_find - look up a drm object with static lifetime |
420 | * @dev: drm device |
421 | * @id: id of the mode object |
422 | * @type: type of the mode object |
423 | * |
424 | * Note that framebuffers cannot be looked up with this functions - since those |
425 | * are reference counted, they need special treatment. |
426 | */ |
427 | struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, |
428 | uint32_t id, uint32_t type) |
429 | { |
430 | struct drm_mode_object *obj = NULL; |
431 | |
432 | /* Framebuffers are reference counted and need their own lookup |
433 | * function.*/ |
434 | WARN_ON(type == DRM_MODE_OBJECT_FB); |
435 | |
436 | mutex_lock(&dev->mode_config.idr_mutex); |
437 | obj = idr_find(&dev->mode_config.crtc_idr, id); |
438 | if (!obj || (obj->type != type) || (obj->id != id)) |
439 | obj = NULL; |
440 | mutex_unlock(&dev->mode_config.idr_mutex); |
441 | |
442 | return obj; |
443 | } |
444 | EXPORT_SYMBOL(drm_mode_object_find); |
445 | |
446 | /** |
447 | * drm_framebuffer_init - initialize a framebuffer |
448 | * @dev: DRM device |
449 | * @fb: framebuffer to be initialized |
450 | * @funcs: ... with these functions |
451 | * |
452 | * Allocates an ID for the framebuffer's parent mode object, sets its mode |
453 | * functions & device file and adds it to the master fd list. |
454 | * |
455 | * IMPORTANT: |
456 | * This functions publishes the fb and makes it available for concurrent access |
457 | * by other users. Which means by this point the fb _must_ be fully set up - |
458 | * since all the fb attributes are invariant over its lifetime, no further |
459 | * locking but only correct reference counting is required. |
460 | * |
461 | * Returns: |
462 | * Zero on success, error code on failure. |
463 | */ |
464 | int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, |
465 | const struct drm_framebuffer_funcs *funcs) |
466 | { |
467 | int ret; |
468 | |
469 | mutex_lock(&dev->mode_config.fb_lock); |
470 | kref_init(&fb->refcount); |
471 | INIT_LIST_HEAD(&fb->filp_head); |
472 | fb->dev = dev; |
473 | fb->funcs = funcs; |
474 | |
475 | ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB); |
476 | if (ret) |
477 | goto out; |
478 | |
479 | /* Grab the idr reference. */ |
480 | drm_framebuffer_reference(fb); |
481 | |
482 | dev->mode_config.num_fb++; |
483 | list_add(&fb->head, &dev->mode_config.fb_list); |
484 | out: |
485 | mutex_unlock(&dev->mode_config.fb_lock); |
486 | |
487 | return 0; |
488 | } |
489 | EXPORT_SYMBOL(drm_framebuffer_init); |
490 | |
491 | static void drm_framebuffer_free(struct kref *kref) |
492 | { |
493 | struct drm_framebuffer *fb = |
494 | container_of(kref, struct drm_framebuffer, refcount); |
495 | fb->funcs->destroy(fb); |
496 | } |
497 | |
498 | static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev, |
499 | uint32_t id) |
500 | { |
501 | struct drm_mode_object *obj = NULL; |
502 | struct drm_framebuffer *fb; |
503 | |
504 | mutex_lock(&dev->mode_config.idr_mutex); |
505 | obj = idr_find(&dev->mode_config.crtc_idr, id); |
506 | if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id)) |
507 | fb = NULL; |
508 | else |
509 | fb = obj_to_fb(obj); |
510 | mutex_unlock(&dev->mode_config.idr_mutex); |
511 | |
512 | return fb; |
513 | } |
514 | |
515 | /** |
516 | * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference |
517 | * @dev: drm device |
518 | * @id: id of the fb object |
519 | * |
520 | * If successful, this grabs an additional reference to the framebuffer - |
521 | * callers need to make sure to eventually unreference the returned framebuffer |
522 | * again, using @drm_framebuffer_unreference. |
523 | */ |
524 | struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, |
525 | uint32_t id) |
526 | { |
527 | struct drm_framebuffer *fb; |
528 | |
529 | mutex_lock(&dev->mode_config.fb_lock); |
530 | fb = __drm_framebuffer_lookup(dev, id); |
531 | if (fb) |
532 | drm_framebuffer_reference(fb); |
533 | mutex_unlock(&dev->mode_config.fb_lock); |
534 | |
535 | return fb; |
536 | } |
537 | EXPORT_SYMBOL(drm_framebuffer_lookup); |
538 | |
539 | /** |
540 | * drm_framebuffer_unreference - unref a framebuffer |
541 | * @fb: framebuffer to unref |
542 | * |
543 | * This functions decrements the fb's refcount and frees it if it drops to zero. |
544 | */ |
545 | void drm_framebuffer_unreference(struct drm_framebuffer *fb) |
546 | { |
547 | DRM_DEBUG("FB ID: %d\n" , fb->base.id); |
548 | kref_put(&fb->refcount, drm_framebuffer_free); |
549 | } |
550 | EXPORT_SYMBOL(drm_framebuffer_unreference); |
551 | |
552 | /** |
553 | * drm_framebuffer_reference - incr the fb refcnt |
554 | * @fb: framebuffer |
555 | * |
556 | * This functions increments the fb's refcount. |
557 | */ |
558 | void drm_framebuffer_reference(struct drm_framebuffer *fb) |
559 | { |
560 | DRM_DEBUG("FB ID: %d\n" , fb->base.id); |
561 | kref_get(&fb->refcount); |
562 | } |
563 | EXPORT_SYMBOL(drm_framebuffer_reference); |
564 | |
565 | static void drm_framebuffer_free_bug(struct kref *kref) |
566 | { |
567 | BUG(); |
568 | } |
569 | |
570 | static void __drm_framebuffer_unreference(struct drm_framebuffer *fb) |
571 | { |
572 | DRM_DEBUG("FB ID: %d\n" , fb->base.id); |
573 | kref_put(&fb->refcount, drm_framebuffer_free_bug); |
574 | } |
575 | |
576 | /* dev->mode_config.fb_lock must be held! */ |
577 | static void __drm_framebuffer_unregister(struct drm_device *dev, |
578 | struct drm_framebuffer *fb) |
579 | { |
580 | mutex_lock(&dev->mode_config.idr_mutex); |
581 | idr_remove(&dev->mode_config.crtc_idr, fb->base.id); |
582 | mutex_unlock(&dev->mode_config.idr_mutex); |
583 | |
584 | fb->base.id = 0; |
585 | |
586 | __drm_framebuffer_unreference(fb); |
587 | } |
588 | |
589 | /** |
590 | * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr |
591 | * @fb: fb to unregister |
592 | * |
593 | * Drivers need to call this when cleaning up driver-private framebuffers, e.g. |
594 | * those used for fbdev. Note that the caller must hold a reference of it's own, |
595 | * i.e. the object may not be destroyed through this call (since it'll lead to a |
596 | * locking inversion). |
597 | */ |
598 | void drm_framebuffer_unregister_private(struct drm_framebuffer *fb) |
599 | { |
600 | struct drm_device *dev = fb->dev; |
601 | |
602 | mutex_lock(&dev->mode_config.fb_lock); |
603 | /* Mark fb as reaped and drop idr ref. */ |
604 | __drm_framebuffer_unregister(dev, fb); |
605 | mutex_unlock(&dev->mode_config.fb_lock); |
606 | } |
607 | EXPORT_SYMBOL(drm_framebuffer_unregister_private); |
608 | |
609 | /** |
610 | * drm_framebuffer_cleanup - remove a framebuffer object |
611 | * @fb: framebuffer to remove |
612 | * |
613 | * Cleanup framebuffer. This function is intended to be used from the drivers |
614 | * ->destroy callback. It can also be used to clean up driver private |
615 | * framebuffers embedded into a larger structure. |
616 | * |
617 | * Note that this function does not remove the fb from active usuage - if it is |
618 | * still used anywhere, hilarity can ensue since userspace could call getfb on |
619 | * the id and get back -EINVAL. Obviously no concern at driver unload time. |
620 | * |
621 | * Also, the framebuffer will not be removed from the lookup idr - for |
622 | * user-created framebuffers this will happen in in the rmfb ioctl. For |
623 | * driver-private objects (e.g. for fbdev) drivers need to explicitly call |
624 | * drm_framebuffer_unregister_private. |
625 | */ |
626 | void drm_framebuffer_cleanup(struct drm_framebuffer *fb) |
627 | { |
628 | struct drm_device *dev = fb->dev; |
629 | |
630 | mutex_lock(&dev->mode_config.fb_lock); |
631 | list_del(&fb->head); |
632 | dev->mode_config.num_fb--; |
633 | mutex_unlock(&dev->mode_config.fb_lock); |
634 | } |
635 | EXPORT_SYMBOL(drm_framebuffer_cleanup); |
636 | |
637 | /** |
638 | * drm_framebuffer_remove - remove and unreference a framebuffer object |
639 | * @fb: framebuffer to remove |
640 | * |
641 | * Scans all the CRTCs and planes in @dev's mode_config. If they're |
642 | * using @fb, removes it, setting it to NULL. Then drops the reference to the |
643 | * passed-in framebuffer. Might take the modeset locks. |
644 | * |
645 | * Note that this function optimizes the cleanup away if the caller holds the |
646 | * last reference to the framebuffer. It is also guaranteed to not take the |
647 | * modeset locks in this case. |
648 | */ |
649 | void drm_framebuffer_remove(struct drm_framebuffer *fb) |
650 | { |
651 | struct drm_device *dev = fb->dev; |
652 | struct drm_crtc *crtc; |
653 | struct drm_plane *plane; |
654 | struct drm_mode_set set; |
655 | int ret; |
656 | |
657 | WARN_ON(!list_empty(&fb->filp_head)); |
658 | |
659 | /* |
660 | * drm ABI mandates that we remove any deleted framebuffers from active |
661 | * useage. But since most sane clients only remove framebuffers they no |
662 | * longer need, try to optimize this away. |
663 | * |
664 | * Since we're holding a reference ourselves, observing a refcount of 1 |
665 | * means that we're the last holder and can skip it. Also, the refcount |
666 | * can never increase from 1 again, so we don't need any barriers or |
667 | * locks. |
668 | * |
669 | * Note that userspace could try to race with use and instate a new |
670 | * usage _after_ we've cleared all current ones. End result will be an |
671 | * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot |
672 | * in this manner. |
673 | */ |
674 | if (!kref_exclusive_p(&fb->refcount)) { |
675 | drm_modeset_lock_all(dev); |
676 | /* remove from any CRTC */ |
677 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
678 | if (crtc->primary->fb == fb) { |
679 | /* should turn off the crtc */ |
680 | memset(&set, 0, sizeof(struct drm_mode_set)); |
681 | set.crtc = crtc; |
682 | set.fb = NULL; |
683 | ret = drm_mode_set_config_internal(&set); |
684 | if (ret) |
685 | DRM_ERROR("failed to reset crtc %p when fb was deleted\n" , crtc); |
686 | } |
687 | } |
688 | |
689 | list_for_each_entry(plane, &dev->mode_config.plane_list, head) { |
690 | if (plane->fb == fb) |
691 | drm_plane_force_disable(plane); |
692 | } |
693 | drm_modeset_unlock_all(dev); |
694 | } |
695 | |
696 | drm_framebuffer_unreference(fb); |
697 | } |
698 | EXPORT_SYMBOL(drm_framebuffer_remove); |
699 | |
700 | /** |
701 | * drm_crtc_init_with_planes - Initialise a new CRTC object with |
702 | * specified primary and cursor planes. |
703 | * @dev: DRM device |
704 | * @crtc: CRTC object to init |
705 | * @primary: Primary plane for CRTC |
706 | * @cursor: Cursor plane for CRTC |
707 | * @funcs: callbacks for the new CRTC |
708 | * |
709 | * Inits a new object created as base part of a driver crtc object. |
710 | * |
711 | * Returns: |
712 | * Zero on success, error code on failure. |
713 | */ |
714 | int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, |
715 | struct drm_plane *primary, |
716 | void *cursor, |
717 | const struct drm_crtc_funcs *funcs) |
718 | { |
719 | int ret; |
720 | |
721 | crtc->dev = dev; |
722 | crtc->funcs = funcs; |
723 | crtc->invert_dimensions = false; |
724 | |
725 | drm_modeset_lock_all(dev); |
726 | #ifdef __NetBSD__ |
727 | linux_mutex_init(&crtc->mutex); |
728 | #else |
729 | mutex_init(&crtc->mutex); |
730 | #endif |
731 | mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); |
732 | |
733 | ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); |
734 | if (ret) |
735 | goto out; |
736 | |
737 | crtc->base.properties = &crtc->properties; |
738 | |
739 | list_add_tail(&crtc->head, &dev->mode_config.crtc_list); |
740 | dev->mode_config.num_crtc++; |
741 | |
742 | crtc->primary = primary; |
743 | if (primary) |
744 | primary->possible_crtcs = 1 << drm_crtc_index(crtc); |
745 | |
746 | out: |
747 | drm_modeset_unlock_all(dev); |
748 | |
749 | return ret; |
750 | } |
751 | EXPORT_SYMBOL(drm_crtc_init_with_planes); |
752 | |
753 | /** |
754 | * drm_crtc_cleanup - Clean up the core crtc usage |
755 | * @crtc: CRTC to cleanup |
756 | * |
757 | * This function cleans up @crtc and removes it from the DRM mode setting |
758 | * core. Note that the function does *not* free the crtc structure itself, |
759 | * this is the responsibility of the caller. |
760 | */ |
761 | void drm_crtc_cleanup(struct drm_crtc *crtc) |
762 | { |
763 | struct drm_device *dev = crtc->dev; |
764 | |
765 | kfree(crtc->gamma_store); |
766 | crtc->gamma_store = NULL; |
767 | |
768 | drm_mode_object_put(dev, &crtc->base); |
769 | list_del(&crtc->head); |
770 | dev->mode_config.num_crtc--; |
771 | |
772 | #ifdef __NetBSD__ |
773 | linux_mutex_destroy(&crtc->mutex); |
774 | #endif |
775 | } |
776 | EXPORT_SYMBOL(drm_crtc_cleanup); |
777 | |
778 | /** |
779 | * drm_crtc_index - find the index of a registered CRTC |
780 | * @crtc: CRTC to find index for |
781 | * |
782 | * Given a registered CRTC, return the index of that CRTC within a DRM |
783 | * device's list of CRTCs. |
784 | */ |
785 | unsigned int drm_crtc_index(struct drm_crtc *crtc) |
786 | { |
787 | unsigned int index = 0; |
788 | struct drm_crtc *tmp; |
789 | |
790 | list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) { |
791 | if (tmp == crtc) |
792 | return index; |
793 | |
794 | index++; |
795 | } |
796 | |
797 | BUG(); |
798 | } |
799 | EXPORT_SYMBOL(drm_crtc_index); |
800 | |
801 | /* |
802 | * drm_mode_remove - remove and free a mode |
803 | * @connector: connector list to modify |
804 | * @mode: mode to remove |
805 | * |
806 | * Remove @mode from @connector's mode list, then free it. |
807 | */ |
808 | static void drm_mode_remove(struct drm_connector *connector, |
809 | struct drm_display_mode *mode) |
810 | { |
811 | list_del(&mode->head); |
812 | drm_mode_destroy(connector->dev, mode); |
813 | } |
814 | |
815 | /** |
816 | * drm_connector_init - Init a preallocated connector |
817 | * @dev: DRM device |
818 | * @connector: the connector to init |
819 | * @funcs: callbacks for this connector |
820 | * @connector_type: user visible type of the connector |
821 | * |
822 | * Initialises a preallocated connector. Connectors should be |
823 | * subclassed as part of driver connector objects. |
824 | * |
825 | * Returns: |
826 | * Zero on success, error code on failure. |
827 | */ |
828 | int drm_connector_init(struct drm_device *dev, |
829 | struct drm_connector *connector, |
830 | const struct drm_connector_funcs *funcs, |
831 | int connector_type) |
832 | { |
833 | int ret; |
834 | struct ida *connector_ida = |
835 | &drm_connector_enum_list[connector_type].ida; |
836 | |
837 | drm_modeset_lock_all(dev); |
838 | |
839 | ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR); |
840 | if (ret) |
841 | goto out; |
842 | |
843 | connector->base.properties = &connector->properties; |
844 | connector->dev = dev; |
845 | connector->funcs = funcs; |
846 | connector->connector_type = connector_type; |
847 | connector->connector_type_id = |
848 | ida_simple_get(connector_ida, 1, 0, GFP_KERNEL); |
849 | if (connector->connector_type_id < 0) { |
850 | ret = connector->connector_type_id; |
851 | drm_mode_object_put(dev, &connector->base); |
852 | goto out; |
853 | } |
854 | INIT_LIST_HEAD(&connector->probed_modes); |
855 | INIT_LIST_HEAD(&connector->modes); |
856 | connector->edid_blob_ptr = NULL; |
857 | connector->status = connector_status_unknown; |
858 | |
859 | list_add_tail(&connector->head, &dev->mode_config.connector_list); |
860 | dev->mode_config.num_connector++; |
861 | |
862 | if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) |
863 | drm_object_attach_property(&connector->base, |
864 | dev->mode_config.edid_property, |
865 | 0); |
866 | |
867 | drm_object_attach_property(&connector->base, |
868 | dev->mode_config.dpms_property, 0); |
869 | |
870 | out: |
871 | drm_modeset_unlock_all(dev); |
872 | |
873 | return ret; |
874 | } |
875 | EXPORT_SYMBOL(drm_connector_init); |
876 | |
877 | /** |
878 | * drm_connector_cleanup - cleans up an initialised connector |
879 | * @connector: connector to cleanup |
880 | * |
881 | * Cleans up the connector but doesn't free the object. |
882 | */ |
883 | void drm_connector_cleanup(struct drm_connector *connector) |
884 | { |
885 | struct drm_device *dev = connector->dev; |
886 | struct drm_display_mode *mode, *t; |
887 | |
888 | list_for_each_entry_safe(mode, t, &connector->probed_modes, head) |
889 | drm_mode_remove(connector, mode); |
890 | |
891 | list_for_each_entry_safe(mode, t, &connector->modes, head) |
892 | drm_mode_remove(connector, mode); |
893 | |
894 | ida_remove(&drm_connector_enum_list[connector->connector_type].ida, |
895 | connector->connector_type_id); |
896 | |
897 | drm_mode_object_put(dev, &connector->base); |
898 | list_del(&connector->head); |
899 | dev->mode_config.num_connector--; |
900 | } |
901 | EXPORT_SYMBOL(drm_connector_cleanup); |
902 | |
903 | /** |
904 | * drm_connector_unplug_all - unregister connector userspace interfaces |
905 | * @dev: drm device |
906 | * |
907 | * This function unregisters all connector userspace interfaces in sysfs. Should |
908 | * be call when the device is disconnected, e.g. from an usb driver's |
909 | * ->disconnect callback. |
910 | */ |
911 | void drm_connector_unplug_all(struct drm_device *dev) |
912 | { |
913 | #ifndef __NetBSD__ |
914 | struct drm_connector *connector; |
915 | |
916 | /* taking the mode config mutex ends up in a clash with sysfs */ |
917 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
918 | drm_sysfs_connector_remove(connector); |
919 | #endif |
920 | |
921 | } |
922 | EXPORT_SYMBOL(drm_connector_unplug_all); |
923 | |
924 | /** |
925 | * drm_bridge_init - initialize a drm transcoder/bridge |
926 | * @dev: drm device |
927 | * @bridge: transcoder/bridge to set up |
928 | * @funcs: bridge function table |
929 | * |
930 | * Initialises a preallocated bridge. Bridges should be |
931 | * subclassed as part of driver connector objects. |
932 | * |
933 | * Returns: |
934 | * Zero on success, error code on failure. |
935 | */ |
936 | int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge, |
937 | const struct drm_bridge_funcs *funcs) |
938 | { |
939 | int ret; |
940 | |
941 | drm_modeset_lock_all(dev); |
942 | |
943 | ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE); |
944 | if (ret) |
945 | goto out; |
946 | |
947 | bridge->dev = dev; |
948 | bridge->funcs = funcs; |
949 | |
950 | list_add_tail(&bridge->head, &dev->mode_config.bridge_list); |
951 | dev->mode_config.num_bridge++; |
952 | |
953 | out: |
954 | drm_modeset_unlock_all(dev); |
955 | return ret; |
956 | } |
957 | EXPORT_SYMBOL(drm_bridge_init); |
958 | |
959 | /** |
960 | * drm_bridge_cleanup - cleans up an initialised bridge |
961 | * @bridge: bridge to cleanup |
962 | * |
963 | * Cleans up the bridge but doesn't free the object. |
964 | */ |
965 | void drm_bridge_cleanup(struct drm_bridge *bridge) |
966 | { |
967 | struct drm_device *dev = bridge->dev; |
968 | |
969 | drm_modeset_lock_all(dev); |
970 | drm_mode_object_put(dev, &bridge->base); |
971 | list_del(&bridge->head); |
972 | dev->mode_config.num_bridge--; |
973 | drm_modeset_unlock_all(dev); |
974 | } |
975 | EXPORT_SYMBOL(drm_bridge_cleanup); |
976 | |
977 | /** |
978 | * drm_encoder_init - Init a preallocated encoder |
979 | * @dev: drm device |
980 | * @encoder: the encoder to init |
981 | * @funcs: callbacks for this encoder |
982 | * @encoder_type: user visible type of the encoder |
983 | * |
984 | * Initialises a preallocated encoder. Encoder should be |
985 | * subclassed as part of driver encoder objects. |
986 | * |
987 | * Returns: |
988 | * Zero on success, error code on failure. |
989 | */ |
990 | int drm_encoder_init(struct drm_device *dev, |
991 | struct drm_encoder *encoder, |
992 | const struct drm_encoder_funcs *funcs, |
993 | int encoder_type) |
994 | { |
995 | int ret; |
996 | |
997 | drm_modeset_lock_all(dev); |
998 | |
999 | ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); |
1000 | if (ret) |
1001 | goto out; |
1002 | |
1003 | encoder->dev = dev; |
1004 | encoder->encoder_type = encoder_type; |
1005 | encoder->funcs = funcs; |
1006 | |
1007 | list_add_tail(&encoder->head, &dev->mode_config.encoder_list); |
1008 | dev->mode_config.num_encoder++; |
1009 | |
1010 | out: |
1011 | drm_modeset_unlock_all(dev); |
1012 | |
1013 | return ret; |
1014 | } |
1015 | EXPORT_SYMBOL(drm_encoder_init); |
1016 | |
1017 | /** |
1018 | * drm_encoder_cleanup - cleans up an initialised encoder |
1019 | * @encoder: encoder to cleanup |
1020 | * |
1021 | * Cleans up the encoder but doesn't free the object. |
1022 | */ |
1023 | void drm_encoder_cleanup(struct drm_encoder *encoder) |
1024 | { |
1025 | struct drm_device *dev = encoder->dev; |
1026 | drm_modeset_lock_all(dev); |
1027 | drm_mode_object_put(dev, &encoder->base); |
1028 | list_del(&encoder->head); |
1029 | dev->mode_config.num_encoder--; |
1030 | drm_modeset_unlock_all(dev); |
1031 | } |
1032 | EXPORT_SYMBOL(drm_encoder_cleanup); |
1033 | |
1034 | /** |
1035 | * drm_universal_plane_init - Initialize a new universal plane object |
1036 | * @dev: DRM device |
1037 | * @plane: plane object to init |
1038 | * @possible_crtcs: bitmask of possible CRTCs |
1039 | * @funcs: callbacks for the new plane |
1040 | * @formats: array of supported formats (%DRM_FORMAT_*) |
1041 | * @format_count: number of elements in @formats |
1042 | * @type: type of plane (overlay, primary, cursor) |
1043 | * |
1044 | * Initializes a plane object of type @type. |
1045 | * |
1046 | * Returns: |
1047 | * Zero on success, error code on failure. |
1048 | */ |
1049 | int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, |
1050 | unsigned long possible_crtcs, |
1051 | const struct drm_plane_funcs *funcs, |
1052 | const uint32_t *formats, uint32_t format_count, |
1053 | enum drm_plane_type type) |
1054 | { |
1055 | int ret; |
1056 | |
1057 | drm_modeset_lock_all(dev); |
1058 | |
1059 | ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); |
1060 | if (ret) |
1061 | goto out; |
1062 | |
1063 | plane->base.properties = &plane->properties; |
1064 | plane->dev = dev; |
1065 | plane->funcs = funcs; |
1066 | plane->format_types = kmalloc(sizeof(uint32_t) * format_count, |
1067 | GFP_KERNEL); |
1068 | if (!plane->format_types) { |
1069 | DRM_DEBUG_KMS("out of memory when allocating plane\n" ); |
1070 | drm_mode_object_put(dev, &plane->base); |
1071 | ret = -ENOMEM; |
1072 | goto out; |
1073 | } |
1074 | |
1075 | memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); |
1076 | plane->format_count = format_count; |
1077 | plane->possible_crtcs = possible_crtcs; |
1078 | plane->type = type; |
1079 | |
1080 | list_add_tail(&plane->head, &dev->mode_config.plane_list); |
1081 | dev->mode_config.num_total_plane++; |
1082 | if (plane->type == DRM_PLANE_TYPE_OVERLAY) |
1083 | dev->mode_config.num_overlay_plane++; |
1084 | |
1085 | drm_object_attach_property(&plane->base, |
1086 | dev->mode_config.plane_type_property, |
1087 | plane->type); |
1088 | |
1089 | out: |
1090 | drm_modeset_unlock_all(dev); |
1091 | |
1092 | return ret; |
1093 | } |
1094 | EXPORT_SYMBOL(drm_universal_plane_init); |
1095 | |
1096 | /** |
1097 | * drm_plane_init - Initialize a legacy plane |
1098 | * @dev: DRM device |
1099 | * @plane: plane object to init |
1100 | * @possible_crtcs: bitmask of possible CRTCs |
1101 | * @funcs: callbacks for the new plane |
1102 | * @formats: array of supported formats (%DRM_FORMAT_*) |
1103 | * @format_count: number of elements in @formats |
1104 | * @is_primary: plane type (primary vs overlay) |
1105 | * |
1106 | * Legacy API to initialize a DRM plane. |
1107 | * |
1108 | * New drivers should call drm_universal_plane_init() instead. |
1109 | * |
1110 | * Returns: |
1111 | * Zero on success, error code on failure. |
1112 | */ |
1113 | int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, |
1114 | unsigned long possible_crtcs, |
1115 | const struct drm_plane_funcs *funcs, |
1116 | const uint32_t *formats, uint32_t format_count, |
1117 | bool is_primary) |
1118 | { |
1119 | enum drm_plane_type type; |
1120 | |
1121 | type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; |
1122 | return drm_universal_plane_init(dev, plane, possible_crtcs, funcs, |
1123 | formats, format_count, type); |
1124 | } |
1125 | EXPORT_SYMBOL(drm_plane_init); |
1126 | |
1127 | /** |
1128 | * drm_plane_cleanup - Clean up the core plane usage |
1129 | * @plane: plane to cleanup |
1130 | * |
1131 | * This function cleans up @plane and removes it from the DRM mode setting |
1132 | * core. Note that the function does *not* free the plane structure itself, |
1133 | * this is the responsibility of the caller. |
1134 | */ |
1135 | void drm_plane_cleanup(struct drm_plane *plane) |
1136 | { |
1137 | struct drm_device *dev = plane->dev; |
1138 | |
1139 | drm_modeset_lock_all(dev); |
1140 | kfree(plane->format_types); |
1141 | drm_mode_object_put(dev, &plane->base); |
1142 | |
1143 | BUG_ON(list_empty(&plane->head)); |
1144 | |
1145 | list_del(&plane->head); |
1146 | dev->mode_config.num_total_plane--; |
1147 | if (plane->type == DRM_PLANE_TYPE_OVERLAY) |
1148 | dev->mode_config.num_overlay_plane--; |
1149 | drm_modeset_unlock_all(dev); |
1150 | } |
1151 | EXPORT_SYMBOL(drm_plane_cleanup); |
1152 | |
1153 | /** |
1154 | * drm_plane_force_disable - Forcibly disable a plane |
1155 | * @plane: plane to disable |
1156 | * |
1157 | * Forces the plane to be disabled. |
1158 | * |
1159 | * Used when the plane's current framebuffer is destroyed, |
1160 | * and when restoring fbdev mode. |
1161 | */ |
1162 | void drm_plane_force_disable(struct drm_plane *plane) |
1163 | { |
1164 | int ret; |
1165 | |
1166 | if (!plane->fb) |
1167 | return; |
1168 | |
1169 | ret = plane->funcs->disable_plane(plane); |
1170 | if (ret) |
1171 | DRM_ERROR("failed to disable plane with busy fb\n" ); |
1172 | /* disconnect the plane from the fb and crtc: */ |
1173 | __drm_framebuffer_unreference(plane->fb); |
1174 | plane->fb = NULL; |
1175 | plane->crtc = NULL; |
1176 | } |
1177 | EXPORT_SYMBOL(drm_plane_force_disable); |
1178 | |
1179 | static int drm_mode_create_standard_connector_properties(struct drm_device *dev) |
1180 | { |
1181 | struct drm_property *edid; |
1182 | struct drm_property *dpms; |
1183 | |
1184 | /* |
1185 | * Standard properties (apply to all connectors) |
1186 | */ |
1187 | edid = drm_property_create(dev, DRM_MODE_PROP_BLOB | |
1188 | DRM_MODE_PROP_IMMUTABLE, |
1189 | "EDID" , 0); |
1190 | dev->mode_config.edid_property = edid; |
1191 | |
1192 | dpms = drm_property_create_enum(dev, 0, |
1193 | "DPMS" , drm_dpms_enum_list, |
1194 | ARRAY_SIZE(drm_dpms_enum_list)); |
1195 | dev->mode_config.dpms_property = dpms; |
1196 | |
1197 | return 0; |
1198 | } |
1199 | |
1200 | static int drm_mode_create_standard_plane_properties(struct drm_device *dev) |
1201 | { |
1202 | struct drm_property *type; |
1203 | |
1204 | /* |
1205 | * Standard properties (apply to all planes) |
1206 | */ |
1207 | type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, |
1208 | "type" , drm_plane_type_enum_list, |
1209 | ARRAY_SIZE(drm_plane_type_enum_list)); |
1210 | dev->mode_config.plane_type_property = type; |
1211 | |
1212 | return 0; |
1213 | } |
1214 | |
1215 | /** |
1216 | * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties |
1217 | * @dev: DRM device |
1218 | * |
1219 | * Called by a driver the first time a DVI-I connector is made. |
1220 | */ |
1221 | int drm_mode_create_dvi_i_properties(struct drm_device *dev) |
1222 | { |
1223 | struct drm_property *dvi_i_selector; |
1224 | struct drm_property *dvi_i_subconnector; |
1225 | |
1226 | if (dev->mode_config.dvi_i_select_subconnector_property) |
1227 | return 0; |
1228 | |
1229 | dvi_i_selector = |
1230 | drm_property_create_enum(dev, 0, |
1231 | "select subconnector" , |
1232 | drm_dvi_i_select_enum_list, |
1233 | ARRAY_SIZE(drm_dvi_i_select_enum_list)); |
1234 | dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; |
1235 | |
1236 | dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, |
1237 | "subconnector" , |
1238 | drm_dvi_i_subconnector_enum_list, |
1239 | ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); |
1240 | dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; |
1241 | |
1242 | return 0; |
1243 | } |
1244 | EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); |
1245 | |
1246 | /** |
1247 | * drm_create_tv_properties - create TV specific connector properties |
1248 | * @dev: DRM device |
1249 | * @num_modes: number of different TV formats (modes) supported |
1250 | * @modes: array of pointers to strings containing name of each format |
1251 | * |
1252 | * Called by a driver's TV initialization routine, this function creates |
1253 | * the TV specific connector properties for a given device. Caller is |
1254 | * responsible for allocating a list of format names and passing them to |
1255 | * this routine. |
1256 | */ |
1257 | int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes, |
1258 | const char *modes[]) |
1259 | { |
1260 | struct drm_property *tv_selector; |
1261 | struct drm_property *tv_subconnector; |
1262 | int i; |
1263 | |
1264 | if (dev->mode_config.tv_select_subconnector_property) |
1265 | return 0; |
1266 | |
1267 | /* |
1268 | * Basic connector properties |
1269 | */ |
1270 | tv_selector = drm_property_create_enum(dev, 0, |
1271 | "select subconnector" , |
1272 | drm_tv_select_enum_list, |
1273 | ARRAY_SIZE(drm_tv_select_enum_list)); |
1274 | dev->mode_config.tv_select_subconnector_property = tv_selector; |
1275 | |
1276 | tv_subconnector = |
1277 | drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, |
1278 | "subconnector" , |
1279 | drm_tv_subconnector_enum_list, |
1280 | ARRAY_SIZE(drm_tv_subconnector_enum_list)); |
1281 | dev->mode_config.tv_subconnector_property = tv_subconnector; |
1282 | |
1283 | /* |
1284 | * Other, TV specific properties: margins & TV modes. |
1285 | */ |
1286 | dev->mode_config.tv_left_margin_property = |
1287 | drm_property_create_range(dev, 0, "left margin" , 0, 100); |
1288 | |
1289 | dev->mode_config.tv_right_margin_property = |
1290 | drm_property_create_range(dev, 0, "right margin" , 0, 100); |
1291 | |
1292 | dev->mode_config.tv_top_margin_property = |
1293 | drm_property_create_range(dev, 0, "top margin" , 0, 100); |
1294 | |
1295 | dev->mode_config.tv_bottom_margin_property = |
1296 | drm_property_create_range(dev, 0, "bottom margin" , 0, 100); |
1297 | |
1298 | dev->mode_config.tv_mode_property = |
1299 | drm_property_create(dev, DRM_MODE_PROP_ENUM, |
1300 | "mode" , num_modes); |
1301 | for (i = 0; i < num_modes; i++) |
1302 | drm_property_add_enum(dev->mode_config.tv_mode_property, i, |
1303 | i, modes[i]); |
1304 | |
1305 | dev->mode_config.tv_brightness_property = |
1306 | drm_property_create_range(dev, 0, "brightness" , 0, 100); |
1307 | |
1308 | dev->mode_config.tv_contrast_property = |
1309 | drm_property_create_range(dev, 0, "contrast" , 0, 100); |
1310 | |
1311 | dev->mode_config.tv_flicker_reduction_property = |
1312 | drm_property_create_range(dev, 0, "flicker reduction" , 0, 100); |
1313 | |
1314 | dev->mode_config.tv_overscan_property = |
1315 | drm_property_create_range(dev, 0, "overscan" , 0, 100); |
1316 | |
1317 | dev->mode_config.tv_saturation_property = |
1318 | drm_property_create_range(dev, 0, "saturation" , 0, 100); |
1319 | |
1320 | dev->mode_config.tv_hue_property = |
1321 | drm_property_create_range(dev, 0, "hue" , 0, 100); |
1322 | |
1323 | return 0; |
1324 | } |
1325 | EXPORT_SYMBOL(drm_mode_create_tv_properties); |
1326 | |
1327 | /** |
1328 | * drm_mode_create_scaling_mode_property - create scaling mode property |
1329 | * @dev: DRM device |
1330 | * |
1331 | * Called by a driver the first time it's needed, must be attached to desired |
1332 | * connectors. |
1333 | */ |
1334 | int drm_mode_create_scaling_mode_property(struct drm_device *dev) |
1335 | { |
1336 | struct drm_property *scaling_mode; |
1337 | |
1338 | if (dev->mode_config.scaling_mode_property) |
1339 | return 0; |
1340 | |
1341 | scaling_mode = |
1342 | drm_property_create_enum(dev, 0, "scaling mode" , |
1343 | drm_scaling_mode_enum_list, |
1344 | ARRAY_SIZE(drm_scaling_mode_enum_list)); |
1345 | |
1346 | dev->mode_config.scaling_mode_property = scaling_mode; |
1347 | |
1348 | return 0; |
1349 | } |
1350 | EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); |
1351 | |
1352 | /** |
1353 | * drm_mode_create_dirty_property - create dirty property |
1354 | * @dev: DRM device |
1355 | * |
1356 | * Called by a driver the first time it's needed, must be attached to desired |
1357 | * connectors. |
1358 | */ |
1359 | int drm_mode_create_dirty_info_property(struct drm_device *dev) |
1360 | { |
1361 | struct drm_property *dirty_info; |
1362 | |
1363 | if (dev->mode_config.dirty_info_property) |
1364 | return 0; |
1365 | |
1366 | dirty_info = |
1367 | drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, |
1368 | "dirty" , |
1369 | drm_dirty_info_enum_list, |
1370 | ARRAY_SIZE(drm_dirty_info_enum_list)); |
1371 | dev->mode_config.dirty_info_property = dirty_info; |
1372 | |
1373 | return 0; |
1374 | } |
1375 | EXPORT_SYMBOL(drm_mode_create_dirty_info_property); |
1376 | |
1377 | static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) |
1378 | { |
1379 | uint32_t total_objects = 0; |
1380 | |
1381 | total_objects += dev->mode_config.num_crtc; |
1382 | total_objects += dev->mode_config.num_connector; |
1383 | total_objects += dev->mode_config.num_encoder; |
1384 | total_objects += dev->mode_config.num_bridge; |
1385 | |
1386 | group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); |
1387 | if (!group->id_list) |
1388 | return -ENOMEM; |
1389 | |
1390 | group->num_crtcs = 0; |
1391 | group->num_connectors = 0; |
1392 | group->num_encoders = 0; |
1393 | group->num_bridges = 0; |
1394 | return 0; |
1395 | } |
1396 | |
1397 | /* |
1398 | * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is |
1399 | * the drm core's responsibility to set up mode control groups. |
1400 | */ |
1401 | int drm_mode_group_init_legacy_group(struct drm_device *dev, |
1402 | struct drm_mode_group *group) |
1403 | { |
1404 | struct drm_crtc *crtc; |
1405 | struct drm_encoder *encoder; |
1406 | struct drm_connector *connector; |
1407 | struct drm_bridge *bridge; |
1408 | int ret; |
1409 | |
1410 | if ((ret = drm_mode_group_init(dev, group))) |
1411 | return ret; |
1412 | |
1413 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
1414 | group->id_list[group->num_crtcs++] = crtc->base.id; |
1415 | |
1416 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
1417 | group->id_list[group->num_crtcs + group->num_encoders++] = |
1418 | encoder->base.id; |
1419 | |
1420 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
1421 | group->id_list[group->num_crtcs + group->num_encoders + |
1422 | group->num_connectors++] = connector->base.id; |
1423 | |
1424 | list_for_each_entry(bridge, &dev->mode_config.bridge_list, head) |
1425 | group->id_list[group->num_crtcs + group->num_encoders + |
1426 | group->num_connectors + group->num_bridges++] = |
1427 | bridge->base.id; |
1428 | |
1429 | return 0; |
1430 | } |
1431 | EXPORT_SYMBOL(drm_mode_group_init_legacy_group); |
1432 | |
1433 | /** |
1434 | * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo |
1435 | * @out: drm_mode_modeinfo struct to return to the user |
1436 | * @in: drm_display_mode to use |
1437 | * |
1438 | * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to |
1439 | * the user. |
1440 | */ |
1441 | static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, |
1442 | const struct drm_display_mode *in) |
1443 | { |
1444 | WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || |
1445 | in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || |
1446 | in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || |
1447 | in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || |
1448 | in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, |
1449 | "timing values too large for mode info\n" ); |
1450 | |
1451 | out->clock = in->clock; |
1452 | out->hdisplay = in->hdisplay; |
1453 | out->hsync_start = in->hsync_start; |
1454 | out->hsync_end = in->hsync_end; |
1455 | out->htotal = in->htotal; |
1456 | out->hskew = in->hskew; |
1457 | out->vdisplay = in->vdisplay; |
1458 | out->vsync_start = in->vsync_start; |
1459 | out->vsync_end = in->vsync_end; |
1460 | out->vtotal = in->vtotal; |
1461 | out->vscan = in->vscan; |
1462 | out->vrefresh = in->vrefresh; |
1463 | out->flags = in->flags; |
1464 | out->type = in->type; |
1465 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); |
1466 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; |
1467 | } |
1468 | |
1469 | /** |
1470 | * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode |
1471 | * @out: drm_display_mode to return to the user |
1472 | * @in: drm_mode_modeinfo to use |
1473 | * |
1474 | * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to |
1475 | * the caller. |
1476 | * |
1477 | * Returns: |
1478 | * Zero on success, errno on failure. |
1479 | */ |
1480 | static int drm_crtc_convert_umode(struct drm_display_mode *out, |
1481 | const struct drm_mode_modeinfo *in) |
1482 | { |
1483 | if (in->clock > INT_MAX || in->vrefresh > INT_MAX) |
1484 | return -ERANGE; |
1485 | |
1486 | if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX) |
1487 | return -EINVAL; |
1488 | |
1489 | out->clock = in->clock; |
1490 | out->hdisplay = in->hdisplay; |
1491 | out->hsync_start = in->hsync_start; |
1492 | out->hsync_end = in->hsync_end; |
1493 | out->htotal = in->htotal; |
1494 | out->hskew = in->hskew; |
1495 | out->vdisplay = in->vdisplay; |
1496 | out->vsync_start = in->vsync_start; |
1497 | out->vsync_end = in->vsync_end; |
1498 | out->vtotal = in->vtotal; |
1499 | out->vscan = in->vscan; |
1500 | out->vrefresh = in->vrefresh; |
1501 | out->flags = in->flags; |
1502 | out->type = in->type; |
1503 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); |
1504 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; |
1505 | |
1506 | return 0; |
1507 | } |
1508 | |
1509 | /** |
1510 | * drm_mode_getresources - get graphics configuration |
1511 | * @dev: drm device for the ioctl |
1512 | * @data: data pointer for the ioctl |
1513 | * @file_priv: drm file for the ioctl call |
1514 | * |
1515 | * Construct a set of configuration description structures and return |
1516 | * them to the user, including CRTC, connector and framebuffer configuration. |
1517 | * |
1518 | * Called by the user via ioctl. |
1519 | * |
1520 | * Returns: |
1521 | * Zero on success, errno on failure. |
1522 | */ |
1523 | int drm_mode_getresources(struct drm_device *dev, void *data, |
1524 | struct drm_file *file_priv) |
1525 | { |
1526 | struct drm_mode_card_res *card_res = data; |
1527 | struct list_head *lh; |
1528 | struct drm_framebuffer *fb; |
1529 | struct drm_connector *connector; |
1530 | struct drm_crtc *crtc; |
1531 | struct drm_encoder *encoder; |
1532 | int ret = 0; |
1533 | int connector_count = 0; |
1534 | int crtc_count = 0; |
1535 | int fb_count = 0; |
1536 | int encoder_count = 0; |
1537 | int copied = 0, i; |
1538 | uint32_t __user *fb_id; |
1539 | uint32_t __user *crtc_id; |
1540 | uint32_t __user *connector_id; |
1541 | uint32_t __user *encoder_id; |
1542 | struct drm_mode_group *mode_group; |
1543 | |
1544 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
1545 | return -EINVAL; |
1546 | |
1547 | |
1548 | mutex_lock(&file_priv->fbs_lock); |
1549 | /* |
1550 | * For the non-control nodes we need to limit the list of resources |
1551 | * by IDs in the group list for this node |
1552 | */ |
1553 | list_for_each(lh, &file_priv->fbs) |
1554 | fb_count++; |
1555 | |
1556 | /* handle this in 4 parts */ |
1557 | /* FBs */ |
1558 | if (card_res->count_fbs >= fb_count) { |
1559 | copied = 0; |
1560 | fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; |
1561 | list_for_each_entry(fb, &file_priv->fbs, filp_head) { |
1562 | if (put_user(fb->base.id, fb_id + copied)) { |
1563 | mutex_unlock(&file_priv->fbs_lock); |
1564 | return -EFAULT; |
1565 | } |
1566 | copied++; |
1567 | } |
1568 | } |
1569 | card_res->count_fbs = fb_count; |
1570 | mutex_unlock(&file_priv->fbs_lock); |
1571 | |
1572 | drm_modeset_lock_all(dev); |
1573 | if (!drm_is_primary_client(file_priv)) { |
1574 | |
1575 | mode_group = NULL; |
1576 | list_for_each(lh, &dev->mode_config.crtc_list) |
1577 | crtc_count++; |
1578 | |
1579 | list_for_each(lh, &dev->mode_config.connector_list) |
1580 | connector_count++; |
1581 | |
1582 | list_for_each(lh, &dev->mode_config.encoder_list) |
1583 | encoder_count++; |
1584 | } else { |
1585 | |
1586 | mode_group = &file_priv->master->minor->mode_group; |
1587 | crtc_count = mode_group->num_crtcs; |
1588 | connector_count = mode_group->num_connectors; |
1589 | encoder_count = mode_group->num_encoders; |
1590 | } |
1591 | |
1592 | card_res->max_height = dev->mode_config.max_height; |
1593 | card_res->min_height = dev->mode_config.min_height; |
1594 | card_res->max_width = dev->mode_config.max_width; |
1595 | card_res->min_width = dev->mode_config.min_width; |
1596 | |
1597 | /* CRTCs */ |
1598 | if (card_res->count_crtcs >= crtc_count) { |
1599 | copied = 0; |
1600 | crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; |
1601 | if (!mode_group) { |
1602 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, |
1603 | head) { |
1604 | DRM_DEBUG_KMS("[CRTC:%d]\n" , crtc->base.id); |
1605 | if (put_user(crtc->base.id, crtc_id + copied)) { |
1606 | ret = -EFAULT; |
1607 | goto out; |
1608 | } |
1609 | copied++; |
1610 | } |
1611 | } else { |
1612 | for (i = 0; i < mode_group->num_crtcs; i++) { |
1613 | if (put_user(mode_group->id_list[i], |
1614 | crtc_id + copied)) { |
1615 | ret = -EFAULT; |
1616 | goto out; |
1617 | } |
1618 | copied++; |
1619 | } |
1620 | } |
1621 | } |
1622 | card_res->count_crtcs = crtc_count; |
1623 | |
1624 | /* Encoders */ |
1625 | if (card_res->count_encoders >= encoder_count) { |
1626 | copied = 0; |
1627 | encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; |
1628 | if (!mode_group) { |
1629 | list_for_each_entry(encoder, |
1630 | &dev->mode_config.encoder_list, |
1631 | head) { |
1632 | DRM_DEBUG_KMS("[ENCODER:%d:%s]\n" , encoder->base.id, |
1633 | drm_get_encoder_name(encoder)); |
1634 | if (put_user(encoder->base.id, encoder_id + |
1635 | copied)) { |
1636 | ret = -EFAULT; |
1637 | goto out; |
1638 | } |
1639 | copied++; |
1640 | } |
1641 | } else { |
1642 | for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { |
1643 | if (put_user(mode_group->id_list[i], |
1644 | encoder_id + copied)) { |
1645 | ret = -EFAULT; |
1646 | goto out; |
1647 | } |
1648 | copied++; |
1649 | } |
1650 | |
1651 | } |
1652 | } |
1653 | card_res->count_encoders = encoder_count; |
1654 | |
1655 | /* Connectors */ |
1656 | if (card_res->count_connectors >= connector_count) { |
1657 | copied = 0; |
1658 | connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; |
1659 | if (!mode_group) { |
1660 | list_for_each_entry(connector, |
1661 | &dev->mode_config.connector_list, |
1662 | head) { |
1663 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n" , |
1664 | connector->base.id, |
1665 | drm_get_connector_name(connector)); |
1666 | if (put_user(connector->base.id, |
1667 | connector_id + copied)) { |
1668 | ret = -EFAULT; |
1669 | goto out; |
1670 | } |
1671 | copied++; |
1672 | } |
1673 | } else { |
1674 | int start = mode_group->num_crtcs + |
1675 | mode_group->num_encoders; |
1676 | for (i = start; i < start + mode_group->num_connectors; i++) { |
1677 | if (put_user(mode_group->id_list[i], |
1678 | connector_id + copied)) { |
1679 | ret = -EFAULT; |
1680 | goto out; |
1681 | } |
1682 | copied++; |
1683 | } |
1684 | } |
1685 | } |
1686 | card_res->count_connectors = connector_count; |
1687 | |
1688 | DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n" , card_res->count_crtcs, |
1689 | card_res->count_connectors, card_res->count_encoders); |
1690 | |
1691 | out: |
1692 | drm_modeset_unlock_all(dev); |
1693 | return ret; |
1694 | } |
1695 | |
1696 | /** |
1697 | * drm_mode_getcrtc - get CRTC configuration |
1698 | * @dev: drm device for the ioctl |
1699 | * @data: data pointer for the ioctl |
1700 | * @file_priv: drm file for the ioctl call |
1701 | * |
1702 | * Construct a CRTC configuration structure to return to the user. |
1703 | * |
1704 | * Called by the user via ioctl. |
1705 | * |
1706 | * Returns: |
1707 | * Zero on success, errno on failure. |
1708 | */ |
1709 | int drm_mode_getcrtc(struct drm_device *dev, |
1710 | void *data, struct drm_file *file_priv) |
1711 | { |
1712 | struct drm_mode_crtc *crtc_resp = data; |
1713 | struct drm_crtc *crtc; |
1714 | struct drm_mode_object *obj; |
1715 | int ret = 0; |
1716 | |
1717 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
1718 | return -EINVAL; |
1719 | |
1720 | drm_modeset_lock_all(dev); |
1721 | |
1722 | obj = drm_mode_object_find(dev, crtc_resp->crtc_id, |
1723 | DRM_MODE_OBJECT_CRTC); |
1724 | if (!obj) { |
1725 | ret = -ENOENT; |
1726 | goto out; |
1727 | } |
1728 | crtc = obj_to_crtc(obj); |
1729 | |
1730 | crtc_resp->x = crtc->x; |
1731 | crtc_resp->y = crtc->y; |
1732 | crtc_resp->gamma_size = crtc->gamma_size; |
1733 | if (crtc->primary->fb) |
1734 | crtc_resp->fb_id = crtc->primary->fb->base.id; |
1735 | else |
1736 | crtc_resp->fb_id = 0; |
1737 | |
1738 | if (crtc->enabled) { |
1739 | |
1740 | drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); |
1741 | crtc_resp->mode_valid = 1; |
1742 | |
1743 | } else { |
1744 | crtc_resp->mode_valid = 0; |
1745 | } |
1746 | |
1747 | out: |
1748 | drm_modeset_unlock_all(dev); |
1749 | return ret; |
1750 | } |
1751 | |
1752 | static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode, |
1753 | const struct drm_file *file_priv) |
1754 | { |
1755 | /* |
1756 | * If user-space hasn't configured the driver to expose the stereo 3D |
1757 | * modes, don't expose them. |
1758 | */ |
1759 | if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode)) |
1760 | return false; |
1761 | |
1762 | return true; |
1763 | } |
1764 | |
1765 | /** |
1766 | * drm_mode_getconnector - get connector configuration |
1767 | * @dev: drm device for the ioctl |
1768 | * @data: data pointer for the ioctl |
1769 | * @file_priv: drm file for the ioctl call |
1770 | * |
1771 | * Construct a connector configuration structure to return to the user. |
1772 | * |
1773 | * Called by the user via ioctl. |
1774 | * |
1775 | * Returns: |
1776 | * Zero on success, errno on failure. |
1777 | */ |
1778 | int drm_mode_getconnector(struct drm_device *dev, void *data, |
1779 | struct drm_file *file_priv) |
1780 | { |
1781 | struct drm_mode_get_connector *out_resp = data; |
1782 | struct drm_mode_object *obj; |
1783 | struct drm_connector *connector; |
1784 | struct drm_display_mode *mode; |
1785 | int mode_count = 0; |
1786 | int props_count = 0; |
1787 | int encoders_count = 0; |
1788 | int ret = 0; |
1789 | int copied = 0; |
1790 | int i; |
1791 | struct drm_mode_modeinfo u_mode; |
1792 | struct drm_mode_modeinfo __user *mode_ptr; |
1793 | uint32_t __user *prop_ptr; |
1794 | uint64_t __user *prop_values; |
1795 | uint32_t __user *encoder_ptr; |
1796 | |
1797 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
1798 | return -EINVAL; |
1799 | |
1800 | memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); |
1801 | |
1802 | DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n" , out_resp->connector_id); |
1803 | |
1804 | mutex_lock(&dev->mode_config.mutex); |
1805 | |
1806 | obj = drm_mode_object_find(dev, out_resp->connector_id, |
1807 | DRM_MODE_OBJECT_CONNECTOR); |
1808 | if (!obj) { |
1809 | ret = -ENOENT; |
1810 | goto out; |
1811 | } |
1812 | connector = obj_to_connector(obj); |
1813 | |
1814 | props_count = connector->properties.count; |
1815 | |
1816 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { |
1817 | if (connector->encoder_ids[i] != 0) { |
1818 | encoders_count++; |
1819 | } |
1820 | } |
1821 | |
1822 | if (out_resp->count_modes == 0) { |
1823 | connector->funcs->fill_modes(connector, |
1824 | dev->mode_config.max_width, |
1825 | dev->mode_config.max_height); |
1826 | } |
1827 | |
1828 | /* delayed so we get modes regardless of pre-fill_modes state */ |
1829 | list_for_each_entry(mode, &connector->modes, head) |
1830 | if (drm_mode_expose_to_userspace(mode, file_priv)) |
1831 | mode_count++; |
1832 | |
1833 | out_resp->connector_id = connector->base.id; |
1834 | out_resp->connector_type = connector->connector_type; |
1835 | out_resp->connector_type_id = connector->connector_type_id; |
1836 | out_resp->mm_width = connector->display_info.width_mm; |
1837 | out_resp->mm_height = connector->display_info.height_mm; |
1838 | out_resp->subpixel = connector->display_info.subpixel_order; |
1839 | out_resp->connection = connector->status; |
1840 | if (connector->encoder) |
1841 | out_resp->encoder_id = connector->encoder->base.id; |
1842 | else |
1843 | out_resp->encoder_id = 0; |
1844 | |
1845 | /* |
1846 | * This ioctl is called twice, once to determine how much space is |
1847 | * needed, and the 2nd time to fill it. |
1848 | */ |
1849 | if ((out_resp->count_modes >= mode_count) && mode_count) { |
1850 | copied = 0; |
1851 | mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; |
1852 | list_for_each_entry(mode, &connector->modes, head) { |
1853 | if (!drm_mode_expose_to_userspace(mode, file_priv)) |
1854 | continue; |
1855 | |
1856 | drm_crtc_convert_to_umode(&u_mode, mode); |
1857 | if (copy_to_user(mode_ptr + copied, |
1858 | &u_mode, sizeof(u_mode))) { |
1859 | ret = -EFAULT; |
1860 | goto out; |
1861 | } |
1862 | copied++; |
1863 | } |
1864 | } |
1865 | out_resp->count_modes = mode_count; |
1866 | |
1867 | if ((out_resp->count_props >= props_count) && props_count) { |
1868 | copied = 0; |
1869 | prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr); |
1870 | prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr); |
1871 | for (i = 0; i < connector->properties.count; i++) { |
1872 | if (put_user(connector->properties.ids[i], |
1873 | prop_ptr + copied)) { |
1874 | ret = -EFAULT; |
1875 | goto out; |
1876 | } |
1877 | |
1878 | if (put_user(connector->properties.values[i], |
1879 | prop_values + copied)) { |
1880 | ret = -EFAULT; |
1881 | goto out; |
1882 | } |
1883 | copied++; |
1884 | } |
1885 | } |
1886 | out_resp->count_props = props_count; |
1887 | |
1888 | if ((out_resp->count_encoders >= encoders_count) && encoders_count) { |
1889 | copied = 0; |
1890 | encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); |
1891 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { |
1892 | if (connector->encoder_ids[i] != 0) { |
1893 | if (put_user(connector->encoder_ids[i], |
1894 | encoder_ptr + copied)) { |
1895 | ret = -EFAULT; |
1896 | goto out; |
1897 | } |
1898 | copied++; |
1899 | } |
1900 | } |
1901 | } |
1902 | out_resp->count_encoders = encoders_count; |
1903 | |
1904 | out: |
1905 | mutex_unlock(&dev->mode_config.mutex); |
1906 | |
1907 | return ret; |
1908 | } |
1909 | |
1910 | /** |
1911 | * drm_mode_getencoder - get encoder configuration |
1912 | * @dev: drm device for the ioctl |
1913 | * @data: data pointer for the ioctl |
1914 | * @file_priv: drm file for the ioctl call |
1915 | * |
1916 | * Construct a encoder configuration structure to return to the user. |
1917 | * |
1918 | * Called by the user via ioctl. |
1919 | * |
1920 | * Returns: |
1921 | * Zero on success, errno on failure. |
1922 | */ |
1923 | int drm_mode_getencoder(struct drm_device *dev, void *data, |
1924 | struct drm_file *file_priv) |
1925 | { |
1926 | struct drm_mode_get_encoder *enc_resp = data; |
1927 | struct drm_mode_object *obj; |
1928 | struct drm_encoder *encoder; |
1929 | int ret = 0; |
1930 | |
1931 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
1932 | return -EINVAL; |
1933 | |
1934 | drm_modeset_lock_all(dev); |
1935 | obj = drm_mode_object_find(dev, enc_resp->encoder_id, |
1936 | DRM_MODE_OBJECT_ENCODER); |
1937 | if (!obj) { |
1938 | ret = -ENOENT; |
1939 | goto out; |
1940 | } |
1941 | encoder = obj_to_encoder(obj); |
1942 | |
1943 | if (encoder->crtc) |
1944 | enc_resp->crtc_id = encoder->crtc->base.id; |
1945 | else |
1946 | enc_resp->crtc_id = 0; |
1947 | enc_resp->encoder_type = encoder->encoder_type; |
1948 | enc_resp->encoder_id = encoder->base.id; |
1949 | enc_resp->possible_crtcs = encoder->possible_crtcs; |
1950 | enc_resp->possible_clones = encoder->possible_clones; |
1951 | |
1952 | out: |
1953 | drm_modeset_unlock_all(dev); |
1954 | return ret; |
1955 | } |
1956 | |
1957 | /** |
1958 | * drm_mode_getplane_res - enumerate all plane resources |
1959 | * @dev: DRM device |
1960 | * @data: ioctl data |
1961 | * @file_priv: DRM file info |
1962 | * |
1963 | * Construct a list of plane ids to return to the user. |
1964 | * |
1965 | * Called by the user via ioctl. |
1966 | * |
1967 | * Returns: |
1968 | * Zero on success, errno on failure. |
1969 | */ |
1970 | int drm_mode_getplane_res(struct drm_device *dev, void *data, |
1971 | struct drm_file *file_priv) |
1972 | { |
1973 | struct drm_mode_get_plane_res *plane_resp = data; |
1974 | struct drm_mode_config *config; |
1975 | struct drm_plane *plane; |
1976 | uint32_t __user *plane_ptr; |
1977 | int copied = 0, ret = 0; |
1978 | unsigned num_planes; |
1979 | |
1980 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
1981 | return -EINVAL; |
1982 | |
1983 | drm_modeset_lock_all(dev); |
1984 | config = &dev->mode_config; |
1985 | |
1986 | if (file_priv->universal_planes) |
1987 | num_planes = config->num_total_plane; |
1988 | else |
1989 | num_planes = config->num_overlay_plane; |
1990 | |
1991 | /* |
1992 | * This ioctl is called twice, once to determine how much space is |
1993 | * needed, and the 2nd time to fill it. |
1994 | */ |
1995 | if (num_planes && |
1996 | (plane_resp->count_planes >= num_planes)) { |
1997 | plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; |
1998 | |
1999 | list_for_each_entry(plane, &config->plane_list, head) { |
2000 | /* |
2001 | * Unless userspace set the 'universal planes' |
2002 | * capability bit, only advertise overlays. |
2003 | */ |
2004 | if (plane->type != DRM_PLANE_TYPE_OVERLAY && |
2005 | !file_priv->universal_planes) |
2006 | continue; |
2007 | |
2008 | if (put_user(plane->base.id, plane_ptr + copied)) { |
2009 | ret = -EFAULT; |
2010 | goto out; |
2011 | } |
2012 | copied++; |
2013 | } |
2014 | } |
2015 | plane_resp->count_planes = num_planes; |
2016 | |
2017 | out: |
2018 | drm_modeset_unlock_all(dev); |
2019 | return ret; |
2020 | } |
2021 | |
2022 | /** |
2023 | * drm_mode_getplane - get plane configuration |
2024 | * @dev: DRM device |
2025 | * @data: ioctl data |
2026 | * @file_priv: DRM file info |
2027 | * |
2028 | * Construct a plane configuration structure to return to the user. |
2029 | * |
2030 | * Called by the user via ioctl. |
2031 | * |
2032 | * Returns: |
2033 | * Zero on success, errno on failure. |
2034 | */ |
2035 | int drm_mode_getplane(struct drm_device *dev, void *data, |
2036 | struct drm_file *file_priv) |
2037 | { |
2038 | struct drm_mode_get_plane *plane_resp = data; |
2039 | struct drm_mode_object *obj; |
2040 | struct drm_plane *plane; |
2041 | uint32_t __user *format_ptr; |
2042 | int ret = 0; |
2043 | |
2044 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2045 | return -EINVAL; |
2046 | |
2047 | drm_modeset_lock_all(dev); |
2048 | obj = drm_mode_object_find(dev, plane_resp->plane_id, |
2049 | DRM_MODE_OBJECT_PLANE); |
2050 | if (!obj) { |
2051 | ret = -ENOENT; |
2052 | goto out; |
2053 | } |
2054 | plane = obj_to_plane(obj); |
2055 | |
2056 | if (plane->crtc) |
2057 | plane_resp->crtc_id = plane->crtc->base.id; |
2058 | else |
2059 | plane_resp->crtc_id = 0; |
2060 | |
2061 | if (plane->fb) |
2062 | plane_resp->fb_id = plane->fb->base.id; |
2063 | else |
2064 | plane_resp->fb_id = 0; |
2065 | |
2066 | plane_resp->plane_id = plane->base.id; |
2067 | plane_resp->possible_crtcs = plane->possible_crtcs; |
2068 | plane_resp->gamma_size = 0; |
2069 | |
2070 | /* |
2071 | * This ioctl is called twice, once to determine how much space is |
2072 | * needed, and the 2nd time to fill it. |
2073 | */ |
2074 | if (plane->format_count && |
2075 | (plane_resp->count_format_types >= plane->format_count)) { |
2076 | format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; |
2077 | if (copy_to_user(format_ptr, |
2078 | plane->format_types, |
2079 | sizeof(uint32_t) * plane->format_count)) { |
2080 | ret = -EFAULT; |
2081 | goto out; |
2082 | } |
2083 | } |
2084 | plane_resp->count_format_types = plane->format_count; |
2085 | |
2086 | out: |
2087 | drm_modeset_unlock_all(dev); |
2088 | return ret; |
2089 | } |
2090 | |
2091 | /** |
2092 | * drm_mode_setplane - configure a plane's configuration |
2093 | * @dev: DRM device |
2094 | * @data: ioctl data* |
2095 | * @file_priv: DRM file info |
2096 | * |
2097 | * Set plane configuration, including placement, fb, scaling, and other factors. |
2098 | * Or pass a NULL fb to disable. |
2099 | * |
2100 | * Returns: |
2101 | * Zero on success, errno on failure. |
2102 | */ |
2103 | int drm_mode_setplane(struct drm_device *dev, void *data, |
2104 | struct drm_file *file_priv) |
2105 | { |
2106 | struct drm_mode_set_plane *plane_req = data; |
2107 | struct drm_mode_object *obj; |
2108 | struct drm_plane *plane; |
2109 | struct drm_crtc *crtc; |
2110 | struct drm_framebuffer *fb = NULL, *old_fb = NULL; |
2111 | int ret = 0; |
2112 | unsigned int fb_width, fb_height; |
2113 | int i; |
2114 | |
2115 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2116 | return -EINVAL; |
2117 | |
2118 | /* |
2119 | * First, find the plane, crtc, and fb objects. If not available, |
2120 | * we don't bother to call the driver. |
2121 | */ |
2122 | obj = drm_mode_object_find(dev, plane_req->plane_id, |
2123 | DRM_MODE_OBJECT_PLANE); |
2124 | if (!obj) { |
2125 | DRM_DEBUG_KMS("Unknown plane ID %d\n" , |
2126 | plane_req->plane_id); |
2127 | return -ENOENT; |
2128 | } |
2129 | plane = obj_to_plane(obj); |
2130 | |
2131 | /* No fb means shut it down */ |
2132 | if (!plane_req->fb_id) { |
2133 | drm_modeset_lock_all(dev); |
2134 | old_fb = plane->fb; |
2135 | plane->funcs->disable_plane(plane); |
2136 | plane->crtc = NULL; |
2137 | plane->fb = NULL; |
2138 | drm_modeset_unlock_all(dev); |
2139 | goto out; |
2140 | } |
2141 | |
2142 | obj = drm_mode_object_find(dev, plane_req->crtc_id, |
2143 | DRM_MODE_OBJECT_CRTC); |
2144 | if (!obj) { |
2145 | DRM_DEBUG_KMS("Unknown crtc ID %d\n" , |
2146 | plane_req->crtc_id); |
2147 | ret = -ENOENT; |
2148 | goto out; |
2149 | } |
2150 | crtc = obj_to_crtc(obj); |
2151 | |
2152 | fb = drm_framebuffer_lookup(dev, plane_req->fb_id); |
2153 | if (!fb) { |
2154 | DRM_DEBUG_KMS("Unknown framebuffer ID %d\n" , |
2155 | plane_req->fb_id); |
2156 | ret = -ENOENT; |
2157 | goto out; |
2158 | } |
2159 | |
2160 | /* Check whether this plane supports the fb pixel format. */ |
2161 | for (i = 0; i < plane->format_count; i++) |
2162 | if (fb->pixel_format == plane->format_types[i]) |
2163 | break; |
2164 | if (i == plane->format_count) { |
2165 | DRM_DEBUG_KMS("Invalid pixel format %s\n" , |
2166 | drm_get_format_name(fb->pixel_format)); |
2167 | ret = -EINVAL; |
2168 | goto out; |
2169 | } |
2170 | |
2171 | fb_width = fb->width << 16; |
2172 | fb_height = fb->height << 16; |
2173 | |
2174 | /* Make sure source coordinates are inside the fb. */ |
2175 | if (plane_req->src_w > fb_width || |
2176 | plane_req->src_x > fb_width - plane_req->src_w || |
2177 | plane_req->src_h > fb_height || |
2178 | plane_req->src_y > fb_height - plane_req->src_h) { |
2179 | DRM_DEBUG_KMS("Invalid source coordinates " |
2180 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n" , |
2181 | plane_req->src_w >> 16, |
2182 | ((plane_req->src_w & 0xffff) * 15625) >> 10, |
2183 | plane_req->src_h >> 16, |
2184 | ((plane_req->src_h & 0xffff) * 15625) >> 10, |
2185 | plane_req->src_x >> 16, |
2186 | ((plane_req->src_x & 0xffff) * 15625) >> 10, |
2187 | plane_req->src_y >> 16, |
2188 | ((plane_req->src_y & 0xffff) * 15625) >> 10); |
2189 | ret = -ENOSPC; |
2190 | goto out; |
2191 | } |
2192 | |
2193 | /* Give drivers some help against integer overflows */ |
2194 | if (plane_req->crtc_w > INT_MAX || |
2195 | plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w || |
2196 | plane_req->crtc_h > INT_MAX || |
2197 | plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) { |
2198 | DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n" , |
2199 | plane_req->crtc_w, plane_req->crtc_h, |
2200 | plane_req->crtc_x, plane_req->crtc_y); |
2201 | ret = -ERANGE; |
2202 | goto out; |
2203 | } |
2204 | |
2205 | drm_modeset_lock_all(dev); |
2206 | ret = plane->funcs->update_plane(plane, crtc, fb, |
2207 | plane_req->crtc_x, plane_req->crtc_y, |
2208 | plane_req->crtc_w, plane_req->crtc_h, |
2209 | plane_req->src_x, plane_req->src_y, |
2210 | plane_req->src_w, plane_req->src_h); |
2211 | if (!ret) { |
2212 | old_fb = plane->fb; |
2213 | plane->crtc = crtc; |
2214 | plane->fb = fb; |
2215 | fb = NULL; |
2216 | } |
2217 | drm_modeset_unlock_all(dev); |
2218 | |
2219 | out: |
2220 | if (fb) |
2221 | drm_framebuffer_unreference(fb); |
2222 | if (old_fb) |
2223 | drm_framebuffer_unreference(old_fb); |
2224 | |
2225 | return ret; |
2226 | } |
2227 | |
2228 | /** |
2229 | * drm_mode_set_config_internal - helper to call ->set_config |
2230 | * @set: modeset config to set |
2231 | * |
2232 | * This is a little helper to wrap internal calls to the ->set_config driver |
2233 | * interface. The only thing it adds is correct refcounting dance. |
2234 | * |
2235 | * Returns: |
2236 | * Zero on success, errno on failure. |
2237 | */ |
2238 | int drm_mode_set_config_internal(struct drm_mode_set *set) |
2239 | { |
2240 | struct drm_crtc *crtc = set->crtc; |
2241 | struct drm_framebuffer *fb; |
2242 | struct drm_crtc *tmp; |
2243 | int ret; |
2244 | |
2245 | /* |
2246 | * NOTE: ->set_config can also disable other crtcs (if we steal all |
2247 | * connectors from it), hence we need to refcount the fbs across all |
2248 | * crtcs. Atomic modeset will have saner semantics ... |
2249 | */ |
2250 | list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) |
2251 | tmp->old_fb = tmp->primary->fb; |
2252 | |
2253 | fb = set->fb; |
2254 | |
2255 | ret = crtc->funcs->set_config(set); |
2256 | if (ret == 0) { |
2257 | crtc->primary->crtc = crtc; |
2258 | |
2259 | /* crtc->fb must be updated by ->set_config, enforces this. */ |
2260 | WARN_ON(fb != crtc->primary->fb); |
2261 | } |
2262 | |
2263 | list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) { |
2264 | if (tmp->primary->fb) |
2265 | drm_framebuffer_reference(tmp->primary->fb); |
2266 | if (tmp->old_fb) |
2267 | drm_framebuffer_unreference(tmp->old_fb); |
2268 | } |
2269 | |
2270 | return ret; |
2271 | } |
2272 | EXPORT_SYMBOL(drm_mode_set_config_internal); |
2273 | |
2274 | /** |
2275 | * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the |
2276 | * CRTC viewport |
2277 | * @crtc: CRTC that framebuffer will be displayed on |
2278 | * @x: x panning |
2279 | * @y: y panning |
2280 | * @mode: mode that framebuffer will be displayed under |
2281 | * @fb: framebuffer to check size of |
2282 | */ |
2283 | int drm_crtc_check_viewport(const struct drm_crtc *crtc, |
2284 | int x, int y, |
2285 | const struct drm_display_mode *mode, |
2286 | const struct drm_framebuffer *fb) |
2287 | |
2288 | { |
2289 | int hdisplay, vdisplay; |
2290 | |
2291 | hdisplay = mode->hdisplay; |
2292 | vdisplay = mode->vdisplay; |
2293 | |
2294 | if (drm_mode_is_stereo(mode)) { |
2295 | struct drm_display_mode adjusted = *mode; |
2296 | |
2297 | drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE); |
2298 | hdisplay = adjusted.crtc_hdisplay; |
2299 | vdisplay = adjusted.crtc_vdisplay; |
2300 | } |
2301 | |
2302 | if (crtc->invert_dimensions) |
2303 | swap(hdisplay, vdisplay); |
2304 | |
2305 | if (hdisplay > fb->width || |
2306 | vdisplay > fb->height || |
2307 | x > fb->width - hdisplay || |
2308 | y > fb->height - vdisplay) { |
2309 | DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n" , |
2310 | fb->width, fb->height, hdisplay, vdisplay, x, y, |
2311 | crtc->invert_dimensions ? " (inverted)" : "" ); |
2312 | return -ENOSPC; |
2313 | } |
2314 | |
2315 | return 0; |
2316 | } |
2317 | EXPORT_SYMBOL(drm_crtc_check_viewport); |
2318 | |
2319 | /** |
2320 | * drm_mode_setcrtc - set CRTC configuration |
2321 | * @dev: drm device for the ioctl |
2322 | * @data: data pointer for the ioctl |
2323 | * @file_priv: drm file for the ioctl call |
2324 | * |
2325 | * Build a new CRTC configuration based on user request. |
2326 | * |
2327 | * Called by the user via ioctl. |
2328 | * |
2329 | * Returns: |
2330 | * Zero on success, errno on failure. |
2331 | */ |
2332 | int drm_mode_setcrtc(struct drm_device *dev, void *data, |
2333 | struct drm_file *file_priv) |
2334 | { |
2335 | struct drm_mode_config *config = &dev->mode_config; |
2336 | struct drm_mode_crtc *crtc_req = data; |
2337 | struct drm_mode_object *obj; |
2338 | struct drm_crtc *crtc; |
2339 | struct drm_connector **connector_set = NULL, *connector; |
2340 | struct drm_framebuffer *fb = NULL; |
2341 | struct drm_display_mode *mode = NULL; |
2342 | struct drm_mode_set set; |
2343 | uint32_t __user *set_connectors_ptr; |
2344 | int ret; |
2345 | int i; |
2346 | |
2347 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2348 | return -EINVAL; |
2349 | |
2350 | /* For some reason crtc x/y offsets are signed internally. */ |
2351 | if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX) |
2352 | return -ERANGE; |
2353 | |
2354 | drm_modeset_lock_all(dev); |
2355 | obj = drm_mode_object_find(dev, crtc_req->crtc_id, |
2356 | DRM_MODE_OBJECT_CRTC); |
2357 | if (!obj) { |
2358 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n" , crtc_req->crtc_id); |
2359 | ret = -ENOENT; |
2360 | goto out; |
2361 | } |
2362 | crtc = obj_to_crtc(obj); |
2363 | DRM_DEBUG_KMS("[CRTC:%d]\n" , crtc->base.id); |
2364 | |
2365 | if (crtc_req->mode_valid) { |
2366 | /* If we have a mode we need a framebuffer. */ |
2367 | /* If we pass -1, set the mode with the currently bound fb */ |
2368 | if (crtc_req->fb_id == -1) { |
2369 | if (!crtc->primary->fb) { |
2370 | DRM_DEBUG_KMS("CRTC doesn't have current FB\n" ); |
2371 | ret = -EINVAL; |
2372 | goto out; |
2373 | } |
2374 | fb = crtc->primary->fb; |
2375 | /* Make refcounting symmetric with the lookup path. */ |
2376 | drm_framebuffer_reference(fb); |
2377 | } else { |
2378 | fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); |
2379 | if (!fb) { |
2380 | DRM_DEBUG_KMS("Unknown FB ID%d\n" , |
2381 | crtc_req->fb_id); |
2382 | ret = -ENOENT; |
2383 | goto out; |
2384 | } |
2385 | } |
2386 | |
2387 | mode = drm_mode_create(dev); |
2388 | if (!mode) { |
2389 | ret = -ENOMEM; |
2390 | goto out; |
2391 | } |
2392 | |
2393 | ret = drm_crtc_convert_umode(mode, &crtc_req->mode); |
2394 | if (ret) { |
2395 | DRM_DEBUG_KMS("Invalid mode\n" ); |
2396 | goto out; |
2397 | } |
2398 | |
2399 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
2400 | |
2401 | ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, |
2402 | mode, fb); |
2403 | if (ret) |
2404 | goto out; |
2405 | |
2406 | } |
2407 | |
2408 | if (crtc_req->count_connectors == 0 && mode) { |
2409 | DRM_DEBUG_KMS("Count connectors is 0 but mode set\n" ); |
2410 | ret = -EINVAL; |
2411 | goto out; |
2412 | } |
2413 | |
2414 | if (crtc_req->count_connectors > 0 && (!mode || !fb)) { |
2415 | DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n" , |
2416 | crtc_req->count_connectors); |
2417 | ret = -EINVAL; |
2418 | goto out; |
2419 | } |
2420 | |
2421 | if (crtc_req->count_connectors > 0) { |
2422 | u32 out_id; |
2423 | |
2424 | /* Avoid unbounded kernel memory allocation */ |
2425 | if (crtc_req->count_connectors > config->num_connector) { |
2426 | ret = -EINVAL; |
2427 | goto out; |
2428 | } |
2429 | |
2430 | connector_set = kmalloc(crtc_req->count_connectors * |
2431 | sizeof(struct drm_connector *), |
2432 | GFP_KERNEL); |
2433 | if (!connector_set) { |
2434 | ret = -ENOMEM; |
2435 | goto out; |
2436 | } |
2437 | |
2438 | for (i = 0; i < crtc_req->count_connectors; i++) { |
2439 | set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; |
2440 | if (get_user(out_id, &set_connectors_ptr[i])) { |
2441 | ret = -EFAULT; |
2442 | goto out; |
2443 | } |
2444 | |
2445 | obj = drm_mode_object_find(dev, out_id, |
2446 | DRM_MODE_OBJECT_CONNECTOR); |
2447 | if (!obj) { |
2448 | DRM_DEBUG_KMS("Connector id %d unknown\n" , |
2449 | out_id); |
2450 | ret = -ENOENT; |
2451 | goto out; |
2452 | } |
2453 | connector = obj_to_connector(obj); |
2454 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n" , |
2455 | connector->base.id, |
2456 | drm_get_connector_name(connector)); |
2457 | |
2458 | connector_set[i] = connector; |
2459 | } |
2460 | } |
2461 | |
2462 | set.crtc = crtc; |
2463 | set.x = crtc_req->x; |
2464 | set.y = crtc_req->y; |
2465 | set.mode = mode; |
2466 | set.connectors = connector_set; |
2467 | set.num_connectors = crtc_req->count_connectors; |
2468 | set.fb = fb; |
2469 | ret = drm_mode_set_config_internal(&set); |
2470 | |
2471 | out: |
2472 | if (fb) |
2473 | drm_framebuffer_unreference(fb); |
2474 | |
2475 | kfree(connector_set); |
2476 | drm_mode_destroy(dev, mode); |
2477 | drm_modeset_unlock_all(dev); |
2478 | return ret; |
2479 | } |
2480 | |
2481 | static int drm_mode_cursor_common(struct drm_device *dev, |
2482 | struct drm_mode_cursor2 *req, |
2483 | struct drm_file *file_priv) |
2484 | { |
2485 | struct drm_mode_object *obj; |
2486 | struct drm_crtc *crtc; |
2487 | int ret = 0; |
2488 | |
2489 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2490 | return -EINVAL; |
2491 | |
2492 | if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) |
2493 | return -EINVAL; |
2494 | |
2495 | obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC); |
2496 | if (!obj) { |
2497 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n" , req->crtc_id); |
2498 | return -ENOENT; |
2499 | } |
2500 | crtc = obj_to_crtc(obj); |
2501 | |
2502 | mutex_lock(&crtc->mutex); |
2503 | if (req->flags & DRM_MODE_CURSOR_BO) { |
2504 | if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { |
2505 | ret = -ENXIO; |
2506 | goto out; |
2507 | } |
2508 | /* Turns off the cursor if handle is 0 */ |
2509 | if (crtc->funcs->cursor_set2) |
2510 | ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle, |
2511 | req->width, req->height, req->hot_x, req->hot_y); |
2512 | else |
2513 | ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, |
2514 | req->width, req->height); |
2515 | } |
2516 | |
2517 | if (req->flags & DRM_MODE_CURSOR_MOVE) { |
2518 | if (crtc->funcs->cursor_move) { |
2519 | ret = crtc->funcs->cursor_move(crtc, req->x, req->y); |
2520 | } else { |
2521 | ret = -EFAULT; |
2522 | goto out; |
2523 | } |
2524 | } |
2525 | out: |
2526 | mutex_unlock(&crtc->mutex); |
2527 | |
2528 | return ret; |
2529 | |
2530 | } |
2531 | |
2532 | |
2533 | /** |
2534 | * drm_mode_cursor_ioctl - set CRTC's cursor configuration |
2535 | * @dev: drm device for the ioctl |
2536 | * @data: data pointer for the ioctl |
2537 | * @file_priv: drm file for the ioctl call |
2538 | * |
2539 | * Set the cursor configuration based on user request. |
2540 | * |
2541 | * Called by the user via ioctl. |
2542 | * |
2543 | * Returns: |
2544 | * Zero on success, errno on failure. |
2545 | */ |
2546 | int drm_mode_cursor_ioctl(struct drm_device *dev, |
2547 | void *data, struct drm_file *file_priv) |
2548 | { |
2549 | struct drm_mode_cursor *req = data; |
2550 | struct drm_mode_cursor2 new_req; |
2551 | |
2552 | memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); |
2553 | new_req.hot_x = new_req.hot_y = 0; |
2554 | |
2555 | return drm_mode_cursor_common(dev, &new_req, file_priv); |
2556 | } |
2557 | |
2558 | /** |
2559 | * drm_mode_cursor2_ioctl - set CRTC's cursor configuration |
2560 | * @dev: drm device for the ioctl |
2561 | * @data: data pointer for the ioctl |
2562 | * @file_priv: drm file for the ioctl call |
2563 | * |
2564 | * Set the cursor configuration based on user request. This implements the 2nd |
2565 | * version of the cursor ioctl, which allows userspace to additionally specify |
2566 | * the hotspot of the pointer. |
2567 | * |
2568 | * Called by the user via ioctl. |
2569 | * |
2570 | * Returns: |
2571 | * Zero on success, errno on failure. |
2572 | */ |
2573 | int drm_mode_cursor2_ioctl(struct drm_device *dev, |
2574 | void *data, struct drm_file *file_priv) |
2575 | { |
2576 | struct drm_mode_cursor2 *req = data; |
2577 | return drm_mode_cursor_common(dev, req, file_priv); |
2578 | } |
2579 | |
2580 | /** |
2581 | * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description |
2582 | * @bpp: bits per pixels |
2583 | * @depth: bit depth per pixel |
2584 | * |
2585 | * Computes a drm fourcc pixel format code for the given @bpp/@depth values. |
2586 | * Useful in fbdev emulation code, since that deals in those values. |
2587 | */ |
2588 | uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) |
2589 | { |
2590 | uint32_t fmt; |
2591 | |
2592 | switch (bpp) { |
2593 | case 8: |
2594 | fmt = DRM_FORMAT_C8; |
2595 | break; |
2596 | case 16: |
2597 | if (depth == 15) |
2598 | fmt = DRM_FORMAT_XRGB1555; |
2599 | else |
2600 | fmt = DRM_FORMAT_RGB565; |
2601 | break; |
2602 | case 24: |
2603 | fmt = DRM_FORMAT_RGB888; |
2604 | break; |
2605 | case 32: |
2606 | if (depth == 24) |
2607 | fmt = DRM_FORMAT_XRGB8888; |
2608 | else if (depth == 30) |
2609 | fmt = DRM_FORMAT_XRGB2101010; |
2610 | else |
2611 | fmt = DRM_FORMAT_ARGB8888; |
2612 | break; |
2613 | default: |
2614 | DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n" ); |
2615 | fmt = DRM_FORMAT_XRGB8888; |
2616 | break; |
2617 | } |
2618 | |
2619 | return fmt; |
2620 | } |
2621 | EXPORT_SYMBOL(drm_mode_legacy_fb_format); |
2622 | |
2623 | /** |
2624 | * drm_mode_addfb - add an FB to the graphics configuration |
2625 | * @dev: drm device for the ioctl |
2626 | * @data: data pointer for the ioctl |
2627 | * @file_priv: drm file for the ioctl call |
2628 | * |
2629 | * Add a new FB to the specified CRTC, given a user request. This is the |
2630 | * original addfb ioclt which only supported RGB formats. |
2631 | * |
2632 | * Called by the user via ioctl. |
2633 | * |
2634 | * Returns: |
2635 | * Zero on success, errno on failure. |
2636 | */ |
2637 | int drm_mode_addfb(struct drm_device *dev, |
2638 | void *data, struct drm_file *file_priv) |
2639 | { |
2640 | struct drm_mode_fb_cmd *or = data; |
2641 | static const struct drm_mode_fb_cmd2 zero_fbcmd; |
2642 | struct drm_mode_fb_cmd2 r = zero_fbcmd; |
2643 | struct drm_mode_config *config = &dev->mode_config; |
2644 | struct drm_framebuffer *fb; |
2645 | int ret = 0; |
2646 | |
2647 | /* Use new struct with format internally */ |
2648 | r.fb_id = or->fb_id; |
2649 | r.width = or->width; |
2650 | r.height = or->height; |
2651 | r.pitches[0] = or->pitch; |
2652 | r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); |
2653 | r.handles[0] = or->handle; |
2654 | |
2655 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2656 | return -EINVAL; |
2657 | |
2658 | if ((config->min_width > r.width) || (r.width > config->max_width)) |
2659 | return -EINVAL; |
2660 | |
2661 | if ((config->min_height > r.height) || (r.height > config->max_height)) |
2662 | return -EINVAL; |
2663 | |
2664 | fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r); |
2665 | if (IS_ERR(fb)) { |
2666 | DRM_DEBUG_KMS("could not create framebuffer\n" ); |
2667 | return PTR_ERR(fb); |
2668 | } |
2669 | |
2670 | mutex_lock(&file_priv->fbs_lock); |
2671 | or->fb_id = fb->base.id; |
2672 | list_add(&fb->filp_head, &file_priv->fbs); |
2673 | DRM_DEBUG_KMS("[FB:%d]\n" , fb->base.id); |
2674 | mutex_unlock(&file_priv->fbs_lock); |
2675 | |
2676 | return ret; |
2677 | } |
2678 | |
2679 | static int format_check(const struct drm_mode_fb_cmd2 *r) |
2680 | { |
2681 | uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN; |
2682 | |
2683 | switch (format) { |
2684 | case DRM_FORMAT_C8: |
2685 | case DRM_FORMAT_RGB332: |
2686 | case DRM_FORMAT_BGR233: |
2687 | case DRM_FORMAT_XRGB4444: |
2688 | case DRM_FORMAT_XBGR4444: |
2689 | case DRM_FORMAT_RGBX4444: |
2690 | case DRM_FORMAT_BGRX4444: |
2691 | case DRM_FORMAT_ARGB4444: |
2692 | case DRM_FORMAT_ABGR4444: |
2693 | case DRM_FORMAT_RGBA4444: |
2694 | case DRM_FORMAT_BGRA4444: |
2695 | case DRM_FORMAT_XRGB1555: |
2696 | case DRM_FORMAT_XBGR1555: |
2697 | case DRM_FORMAT_RGBX5551: |
2698 | case DRM_FORMAT_BGRX5551: |
2699 | case DRM_FORMAT_ARGB1555: |
2700 | case DRM_FORMAT_ABGR1555: |
2701 | case DRM_FORMAT_RGBA5551: |
2702 | case DRM_FORMAT_BGRA5551: |
2703 | case DRM_FORMAT_RGB565: |
2704 | case DRM_FORMAT_BGR565: |
2705 | case DRM_FORMAT_RGB888: |
2706 | case DRM_FORMAT_BGR888: |
2707 | case DRM_FORMAT_XRGB8888: |
2708 | case DRM_FORMAT_XBGR8888: |
2709 | case DRM_FORMAT_RGBX8888: |
2710 | case DRM_FORMAT_BGRX8888: |
2711 | case DRM_FORMAT_ARGB8888: |
2712 | case DRM_FORMAT_ABGR8888: |
2713 | case DRM_FORMAT_RGBA8888: |
2714 | case DRM_FORMAT_BGRA8888: |
2715 | case DRM_FORMAT_XRGB2101010: |
2716 | case DRM_FORMAT_XBGR2101010: |
2717 | case DRM_FORMAT_RGBX1010102: |
2718 | case DRM_FORMAT_BGRX1010102: |
2719 | case DRM_FORMAT_ARGB2101010: |
2720 | case DRM_FORMAT_ABGR2101010: |
2721 | case DRM_FORMAT_RGBA1010102: |
2722 | case DRM_FORMAT_BGRA1010102: |
2723 | case DRM_FORMAT_YUYV: |
2724 | case DRM_FORMAT_YVYU: |
2725 | case DRM_FORMAT_UYVY: |
2726 | case DRM_FORMAT_VYUY: |
2727 | case DRM_FORMAT_AYUV: |
2728 | case DRM_FORMAT_NV12: |
2729 | case DRM_FORMAT_NV21: |
2730 | case DRM_FORMAT_NV16: |
2731 | case DRM_FORMAT_NV61: |
2732 | case DRM_FORMAT_NV24: |
2733 | case DRM_FORMAT_NV42: |
2734 | case DRM_FORMAT_YUV410: |
2735 | case DRM_FORMAT_YVU410: |
2736 | case DRM_FORMAT_YUV411: |
2737 | case DRM_FORMAT_YVU411: |
2738 | case DRM_FORMAT_YUV420: |
2739 | case DRM_FORMAT_YVU420: |
2740 | case DRM_FORMAT_YUV422: |
2741 | case DRM_FORMAT_YVU422: |
2742 | case DRM_FORMAT_YUV444: |
2743 | case DRM_FORMAT_YVU444: |
2744 | return 0; |
2745 | default: |
2746 | DRM_DEBUG_KMS("invalid pixel format %s\n" , |
2747 | drm_get_format_name(r->pixel_format)); |
2748 | return -EINVAL; |
2749 | } |
2750 | } |
2751 | |
2752 | static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) |
2753 | { |
2754 | int ret, hsub, vsub, num_planes, i; |
2755 | |
2756 | ret = format_check(r); |
2757 | if (ret) { |
2758 | DRM_DEBUG_KMS("bad framebuffer format %s\n" , |
2759 | drm_get_format_name(r->pixel_format)); |
2760 | return ret; |
2761 | } |
2762 | |
2763 | hsub = drm_format_horz_chroma_subsampling(r->pixel_format); |
2764 | vsub = drm_format_vert_chroma_subsampling(r->pixel_format); |
2765 | num_planes = drm_format_num_planes(r->pixel_format); |
2766 | |
2767 | if (r->width == 0 || r->width % hsub) { |
2768 | DRM_DEBUG_KMS("bad framebuffer width %u\n" , r->height); |
2769 | return -EINVAL; |
2770 | } |
2771 | |
2772 | if (r->height == 0 || r->height % vsub) { |
2773 | DRM_DEBUG_KMS("bad framebuffer height %u\n" , r->height); |
2774 | return -EINVAL; |
2775 | } |
2776 | |
2777 | for (i = 0; i < num_planes; i++) { |
2778 | unsigned int width = r->width / (i != 0 ? hsub : 1); |
2779 | unsigned int height = r->height / (i != 0 ? vsub : 1); |
2780 | unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i); |
2781 | |
2782 | if (!r->handles[i]) { |
2783 | DRM_DEBUG_KMS("no buffer object handle for plane %d\n" , i); |
2784 | return -EINVAL; |
2785 | } |
2786 | |
2787 | if ((uint64_t) width * cpp > UINT_MAX) |
2788 | return -ERANGE; |
2789 | |
2790 | if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) |
2791 | return -ERANGE; |
2792 | |
2793 | if (r->pitches[i] < width * cpp) { |
2794 | DRM_DEBUG_KMS("bad pitch %u for plane %d\n" , r->pitches[i], i); |
2795 | return -EINVAL; |
2796 | } |
2797 | } |
2798 | |
2799 | return 0; |
2800 | } |
2801 | |
2802 | /** |
2803 | * drm_mode_addfb2 - add an FB to the graphics configuration |
2804 | * @dev: drm device for the ioctl |
2805 | * @data: data pointer for the ioctl |
2806 | * @file_priv: drm file for the ioctl call |
2807 | * |
2808 | * Add a new FB to the specified CRTC, given a user request with format. This is |
2809 | * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers |
2810 | * and uses fourcc codes as pixel format specifiers. |
2811 | * |
2812 | * Called by the user via ioctl. |
2813 | * |
2814 | * Returns: |
2815 | * Zero on success, errno on failure. |
2816 | */ |
2817 | int drm_mode_addfb2(struct drm_device *dev, |
2818 | void *data, struct drm_file *file_priv) |
2819 | { |
2820 | struct drm_mode_fb_cmd2 *r = data; |
2821 | struct drm_mode_config *config = &dev->mode_config; |
2822 | struct drm_framebuffer *fb; |
2823 | int ret; |
2824 | |
2825 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2826 | return -EINVAL; |
2827 | |
2828 | if (r->flags & ~DRM_MODE_FB_INTERLACED) { |
2829 | DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n" , r->flags); |
2830 | return -EINVAL; |
2831 | } |
2832 | |
2833 | if ((config->min_width > r->width) || (r->width > config->max_width)) { |
2834 | DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n" , |
2835 | r->width, config->min_width, config->max_width); |
2836 | return -EINVAL; |
2837 | } |
2838 | if ((config->min_height > r->height) || (r->height > config->max_height)) { |
2839 | DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n" , |
2840 | r->height, config->min_height, config->max_height); |
2841 | return -EINVAL; |
2842 | } |
2843 | |
2844 | ret = framebuffer_check(r); |
2845 | if (ret) |
2846 | return ret; |
2847 | |
2848 | fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); |
2849 | if (IS_ERR(fb)) { |
2850 | DRM_DEBUG_KMS("could not create framebuffer\n" ); |
2851 | return PTR_ERR(fb); |
2852 | } |
2853 | |
2854 | mutex_lock(&file_priv->fbs_lock); |
2855 | r->fb_id = fb->base.id; |
2856 | list_add(&fb->filp_head, &file_priv->fbs); |
2857 | DRM_DEBUG_KMS("[FB:%d]\n" , fb->base.id); |
2858 | mutex_unlock(&file_priv->fbs_lock); |
2859 | |
2860 | |
2861 | return ret; |
2862 | } |
2863 | |
2864 | /** |
2865 | * drm_mode_rmfb - remove an FB from the configuration |
2866 | * @dev: drm device for the ioctl |
2867 | * @data: data pointer for the ioctl |
2868 | * @file_priv: drm file for the ioctl call |
2869 | * |
2870 | * Remove the FB specified by the user. |
2871 | * |
2872 | * Called by the user via ioctl. |
2873 | * |
2874 | * Returns: |
2875 | * Zero on success, errno on failure. |
2876 | */ |
2877 | int drm_mode_rmfb(struct drm_device *dev, |
2878 | void *data, struct drm_file *file_priv) |
2879 | { |
2880 | struct drm_framebuffer *fb = NULL; |
2881 | struct drm_framebuffer *fbl = NULL; |
2882 | uint32_t *id = data; |
2883 | int found = 0; |
2884 | |
2885 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2886 | return -EINVAL; |
2887 | |
2888 | mutex_lock(&file_priv->fbs_lock); |
2889 | mutex_lock(&dev->mode_config.fb_lock); |
2890 | fb = __drm_framebuffer_lookup(dev, *id); |
2891 | if (!fb) |
2892 | goto fail_lookup; |
2893 | |
2894 | list_for_each_entry(fbl, &file_priv->fbs, filp_head) |
2895 | if (fb == fbl) |
2896 | found = 1; |
2897 | if (!found) |
2898 | goto fail_lookup; |
2899 | |
2900 | /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ |
2901 | __drm_framebuffer_unregister(dev, fb); |
2902 | |
2903 | list_del_init(&fb->filp_head); |
2904 | mutex_unlock(&dev->mode_config.fb_lock); |
2905 | mutex_unlock(&file_priv->fbs_lock); |
2906 | |
2907 | drm_framebuffer_remove(fb); |
2908 | |
2909 | return 0; |
2910 | |
2911 | fail_lookup: |
2912 | mutex_unlock(&dev->mode_config.fb_lock); |
2913 | mutex_unlock(&file_priv->fbs_lock); |
2914 | |
2915 | return -ENOENT; |
2916 | } |
2917 | |
2918 | /** |
2919 | * drm_mode_getfb - get FB info |
2920 | * @dev: drm device for the ioctl |
2921 | * @data: data pointer for the ioctl |
2922 | * @file_priv: drm file for the ioctl call |
2923 | * |
2924 | * Lookup the FB given its ID and return info about it. |
2925 | * |
2926 | * Called by the user via ioctl. |
2927 | * |
2928 | * Returns: |
2929 | * Zero on success, errno on failure. |
2930 | */ |
2931 | int drm_mode_getfb(struct drm_device *dev, |
2932 | void *data, struct drm_file *file_priv) |
2933 | { |
2934 | struct drm_mode_fb_cmd *r = data; |
2935 | struct drm_framebuffer *fb; |
2936 | int ret; |
2937 | |
2938 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2939 | return -EINVAL; |
2940 | |
2941 | fb = drm_framebuffer_lookup(dev, r->fb_id); |
2942 | if (!fb) |
2943 | return -ENOENT; |
2944 | |
2945 | r->height = fb->height; |
2946 | r->width = fb->width; |
2947 | r->depth = fb->depth; |
2948 | r->bpp = fb->bits_per_pixel; |
2949 | r->pitch = fb->pitches[0]; |
2950 | if (fb->funcs->create_handle) { |
2951 | if (file_priv->is_master || |
2952 | #ifdef __NetBSD__ |
2953 | DRM_SUSER() || |
2954 | #else |
2955 | capable(CAP_SYS_ADMIN) || |
2956 | #endif |
2957 | drm_is_control_client(file_priv)) { |
2958 | ret = fb->funcs->create_handle(fb, file_priv, |
2959 | &r->handle); |
2960 | } else { |
2961 | /* GET_FB() is an unprivileged ioctl so we must not |
2962 | * return a buffer-handle to non-master processes! For |
2963 | * backwards-compatibility reasons, we cannot make |
2964 | * GET_FB() privileged, so just return an invalid handle |
2965 | * for non-masters. */ |
2966 | r->handle = 0; |
2967 | ret = 0; |
2968 | } |
2969 | } else { |
2970 | ret = -ENODEV; |
2971 | } |
2972 | |
2973 | drm_framebuffer_unreference(fb); |
2974 | |
2975 | return ret; |
2976 | } |
2977 | |
2978 | /** |
2979 | * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB |
2980 | * @dev: drm device for the ioctl |
2981 | * @data: data pointer for the ioctl |
2982 | * @file_priv: drm file for the ioctl call |
2983 | * |
2984 | * Lookup the FB and flush out the damaged area supplied by userspace as a clip |
2985 | * rectangle list. Generic userspace which does frontbuffer rendering must call |
2986 | * this ioctl to flush out the changes on manual-update display outputs, e.g. |
2987 | * usb display-link, mipi manual update panels or edp panel self refresh modes. |
2988 | * |
2989 | * Modesetting drivers which always update the frontbuffer do not need to |
2990 | * implement the corresponding ->dirty framebuffer callback. |
2991 | * |
2992 | * Called by the user via ioctl. |
2993 | * |
2994 | * Returns: |
2995 | * Zero on success, errno on failure. |
2996 | */ |
2997 | int drm_mode_dirtyfb_ioctl(struct drm_device *dev, |
2998 | void *data, struct drm_file *file_priv) |
2999 | { |
3000 | struct drm_clip_rect __user *clips_ptr; |
3001 | struct drm_clip_rect *clips = NULL; |
3002 | struct drm_mode_fb_dirty_cmd *r = data; |
3003 | struct drm_framebuffer *fb; |
3004 | unsigned flags; |
3005 | int num_clips; |
3006 | int ret; |
3007 | |
3008 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
3009 | return -EINVAL; |
3010 | |
3011 | fb = drm_framebuffer_lookup(dev, r->fb_id); |
3012 | if (!fb) |
3013 | return -ENOENT; |
3014 | |
3015 | num_clips = r->num_clips; |
3016 | clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; |
3017 | |
3018 | if (!num_clips != !clips_ptr) { |
3019 | ret = -EINVAL; |
3020 | goto out_err1; |
3021 | } |
3022 | |
3023 | flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; |
3024 | |
3025 | /* If userspace annotates copy, clips must come in pairs */ |
3026 | if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { |
3027 | ret = -EINVAL; |
3028 | goto out_err1; |
3029 | } |
3030 | |
3031 | if (num_clips && clips_ptr) { |
3032 | if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { |
3033 | ret = -EINVAL; |
3034 | goto out_err1; |
3035 | } |
3036 | clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); |
3037 | if (!clips) { |
3038 | ret = -ENOMEM; |
3039 | goto out_err1; |
3040 | } |
3041 | |
3042 | ret = copy_from_user(clips, clips_ptr, |
3043 | num_clips * sizeof(*clips)); |
3044 | if (ret) { |
3045 | ret = -EFAULT; |
3046 | goto out_err2; |
3047 | } |
3048 | } |
3049 | |
3050 | if (fb->funcs->dirty) { |
3051 | ret = fb->funcs->dirty(fb, file_priv, flags, r->color, |
3052 | clips, num_clips); |
3053 | } else { |
3054 | ret = -ENOSYS; |
3055 | } |
3056 | |
3057 | out_err2: |
3058 | kfree(clips); |
3059 | out_err1: |
3060 | drm_framebuffer_unreference(fb); |
3061 | |
3062 | return ret; |
3063 | } |
3064 | |
3065 | |
3066 | /** |
3067 | * drm_fb_release - remove and free the FBs on this file |
3068 | * @priv: drm file for the ioctl |
3069 | * |
3070 | * Destroy all the FBs associated with @filp. |
3071 | * |
3072 | * Called by the user via ioctl. |
3073 | * |
3074 | * Returns: |
3075 | * Zero on success, errno on failure. |
3076 | */ |
3077 | void drm_fb_release(struct drm_file *priv) |
3078 | { |
3079 | struct drm_device *dev = priv->minor->dev; |
3080 | struct drm_framebuffer *fb, *tfb; |
3081 | |
3082 | mutex_lock(&priv->fbs_lock); |
3083 | list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { |
3084 | |
3085 | mutex_lock(&dev->mode_config.fb_lock); |
3086 | /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ |
3087 | __drm_framebuffer_unregister(dev, fb); |
3088 | mutex_unlock(&dev->mode_config.fb_lock); |
3089 | |
3090 | list_del_init(&fb->filp_head); |
3091 | |
3092 | /* This will also drop the fpriv->fbs reference. */ |
3093 | drm_framebuffer_remove(fb); |
3094 | } |
3095 | mutex_unlock(&priv->fbs_lock); |
3096 | } |
3097 | |
3098 | /** |
3099 | * drm_property_create - create a new property type |
3100 | * @dev: drm device |
3101 | * @flags: flags specifying the property type |
3102 | * @name: name of the property |
3103 | * @num_values: number of pre-defined values |
3104 | * |
3105 | * This creates a new generic drm property which can then be attached to a drm |
3106 | * object with drm_object_attach_property. The returned property object must be |
3107 | * freed with drm_property_destroy. |
3108 | * |
3109 | * Returns: |
3110 | * A pointer to the newly created property on success, NULL on failure. |
3111 | */ |
3112 | struct drm_property *drm_property_create(struct drm_device *dev, int flags, |
3113 | const char *name, int num_values) |
3114 | { |
3115 | struct drm_property *property = NULL; |
3116 | int ret; |
3117 | |
3118 | property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); |
3119 | if (!property) |
3120 | return NULL; |
3121 | |
3122 | if (num_values) { |
3123 | property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); |
3124 | if (!property->values) |
3125 | goto fail; |
3126 | } |
3127 | |
3128 | ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); |
3129 | if (ret) |
3130 | goto fail; |
3131 | |
3132 | property->flags = flags; |
3133 | property->num_values = num_values; |
3134 | INIT_LIST_HEAD(&property->enum_blob_list); |
3135 | |
3136 | if (name) { |
3137 | strncpy(property->name, name, DRM_PROP_NAME_LEN); |
3138 | property->name[DRM_PROP_NAME_LEN-1] = '\0'; |
3139 | } |
3140 | |
3141 | list_add_tail(&property->head, &dev->mode_config.property_list); |
3142 | return property; |
3143 | fail: |
3144 | kfree(property->values); |
3145 | kfree(property); |
3146 | return NULL; |
3147 | } |
3148 | EXPORT_SYMBOL(drm_property_create); |
3149 | |
3150 | /** |
3151 | * drm_property_create - create a new enumeration property type |
3152 | * @dev: drm device |
3153 | * @flags: flags specifying the property type |
3154 | * @name: name of the property |
3155 | * @props: enumeration lists with property values |
3156 | * @num_values: number of pre-defined values |
3157 | * |
3158 | * This creates a new generic drm property which can then be attached to a drm |
3159 | * object with drm_object_attach_property. The returned property object must be |
3160 | * freed with drm_property_destroy. |
3161 | * |
3162 | * Userspace is only allowed to set one of the predefined values for enumeration |
3163 | * properties. |
3164 | * |
3165 | * Returns: |
3166 | * A pointer to the newly created property on success, NULL on failure. |
3167 | */ |
3168 | struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, |
3169 | const char *name, |
3170 | const struct drm_prop_enum_list *props, |
3171 | int num_values) |
3172 | { |
3173 | struct drm_property *property; |
3174 | int i, ret; |
3175 | |
3176 | flags |= DRM_MODE_PROP_ENUM; |
3177 | |
3178 | property = drm_property_create(dev, flags, name, num_values); |
3179 | if (!property) |
3180 | return NULL; |
3181 | |
3182 | for (i = 0; i < num_values; i++) { |
3183 | ret = drm_property_add_enum(property, i, |
3184 | props[i].type, |
3185 | props[i].name); |
3186 | if (ret) { |
3187 | drm_property_destroy(dev, property); |
3188 | return NULL; |
3189 | } |
3190 | } |
3191 | |
3192 | return property; |
3193 | } |
3194 | EXPORT_SYMBOL(drm_property_create_enum); |
3195 | |
3196 | /** |
3197 | * drm_property_create - create a new bitmask property type |
3198 | * @dev: drm device |
3199 | * @flags: flags specifying the property type |
3200 | * @name: name of the property |
3201 | * @props: enumeration lists with property bitflags |
3202 | * @num_values: number of pre-defined values |
3203 | * |
3204 | * This creates a new generic drm property which can then be attached to a drm |
3205 | * object with drm_object_attach_property. The returned property object must be |
3206 | * freed with drm_property_destroy. |
3207 | * |
3208 | * Compared to plain enumeration properties userspace is allowed to set any |
3209 | * or'ed together combination of the predefined property bitflag values |
3210 | * |
3211 | * Returns: |
3212 | * A pointer to the newly created property on success, NULL on failure. |
3213 | */ |
3214 | struct drm_property *drm_property_create_bitmask(struct drm_device *dev, |
3215 | int flags, const char *name, |
3216 | const struct drm_prop_enum_list *props, |
3217 | int num_values) |
3218 | { |
3219 | struct drm_property *property; |
3220 | int i, ret; |
3221 | |
3222 | flags |= DRM_MODE_PROP_BITMASK; |
3223 | |
3224 | property = drm_property_create(dev, flags, name, num_values); |
3225 | if (!property) |
3226 | return NULL; |
3227 | |
3228 | for (i = 0; i < num_values; i++) { |
3229 | ret = drm_property_add_enum(property, i, |
3230 | props[i].type, |
3231 | props[i].name); |
3232 | if (ret) { |
3233 | drm_property_destroy(dev, property); |
3234 | return NULL; |
3235 | } |
3236 | } |
3237 | |
3238 | return property; |
3239 | } |
3240 | EXPORT_SYMBOL(drm_property_create_bitmask); |
3241 | |
3242 | /** |
3243 | * drm_property_create - create a new ranged property type |
3244 | * @dev: drm device |
3245 | * @flags: flags specifying the property type |
3246 | * @name: name of the property |
3247 | * @min: minimum value of the property |
3248 | * @max: maximum value of the property |
3249 | * |
3250 | * This creates a new generic drm property which can then be attached to a drm |
3251 | * object with drm_object_attach_property. The returned property object must be |
3252 | * freed with drm_property_destroy. |
3253 | * |
3254 | * Userspace is allowed to set any interger value in the (min, max) range |
3255 | * inclusive. |
3256 | * |
3257 | * Returns: |
3258 | * A pointer to the newly created property on success, NULL on failure. |
3259 | */ |
3260 | struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, |
3261 | const char *name, |
3262 | uint64_t min, uint64_t max) |
3263 | { |
3264 | struct drm_property *property; |
3265 | |
3266 | flags |= DRM_MODE_PROP_RANGE; |
3267 | |
3268 | property = drm_property_create(dev, flags, name, 2); |
3269 | if (!property) |
3270 | return NULL; |
3271 | |
3272 | property->values[0] = min; |
3273 | property->values[1] = max; |
3274 | |
3275 | return property; |
3276 | } |
3277 | EXPORT_SYMBOL(drm_property_create_range); |
3278 | |
3279 | /** |
3280 | * drm_property_add_enum - add a possible value to an enumeration property |
3281 | * @property: enumeration property to change |
3282 | * @index: index of the new enumeration |
3283 | * @value: value of the new enumeration |
3284 | * @name: symbolic name of the new enumeration |
3285 | * |
3286 | * This functions adds enumerations to a property. |
3287 | * |
3288 | * It's use is deprecated, drivers should use one of the more specific helpers |
3289 | * to directly create the property with all enumerations already attached. |
3290 | * |
3291 | * Returns: |
3292 | * Zero on success, error code on failure. |
3293 | */ |
3294 | int drm_property_add_enum(struct drm_property *property, int index, |
3295 | uint64_t value, const char *name) |
3296 | { |
3297 | struct drm_property_enum *prop_enum; |
3298 | |
3299 | if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK))) |
3300 | return -EINVAL; |
3301 | |
3302 | /* |
3303 | * Bitmask enum properties have the additional constraint of values |
3304 | * from 0 to 63 |
3305 | */ |
3306 | if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63)) |
3307 | return -EINVAL; |
3308 | |
3309 | if (!list_empty(&property->enum_blob_list)) { |
3310 | list_for_each_entry(prop_enum, &property->enum_blob_list, head) { |
3311 | if (prop_enum->value == value) { |
3312 | strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); |
3313 | prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; |
3314 | return 0; |
3315 | } |
3316 | } |
3317 | } |
3318 | |
3319 | prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); |
3320 | if (!prop_enum) |
3321 | return -ENOMEM; |
3322 | |
3323 | strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); |
3324 | prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; |
3325 | prop_enum->value = value; |
3326 | |
3327 | property->values[index] = value; |
3328 | list_add_tail(&prop_enum->head, &property->enum_blob_list); |
3329 | return 0; |
3330 | } |
3331 | EXPORT_SYMBOL(drm_property_add_enum); |
3332 | |
3333 | /** |
3334 | * drm_property_destroy - destroy a drm property |
3335 | * @dev: drm device |
3336 | * @property: property to destry |
3337 | * |
3338 | * This function frees a property including any attached resources like |
3339 | * enumeration values. |
3340 | */ |
3341 | void drm_property_destroy(struct drm_device *dev, struct drm_property *property) |
3342 | { |
3343 | struct drm_property_enum *prop_enum, *pt; |
3344 | |
3345 | list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { |
3346 | list_del(&prop_enum->head); |
3347 | kfree(prop_enum); |
3348 | } |
3349 | |
3350 | if (property->num_values) |
3351 | kfree(property->values); |
3352 | drm_mode_object_put(dev, &property->base); |
3353 | list_del(&property->head); |
3354 | kfree(property); |
3355 | } |
3356 | EXPORT_SYMBOL(drm_property_destroy); |
3357 | |
3358 | /** |
3359 | * drm_object_attach_property - attach a property to a modeset object |
3360 | * @obj: drm modeset object |
3361 | * @property: property to attach |
3362 | * @init_val: initial value of the property |
3363 | * |
3364 | * This attaches the given property to the modeset object with the given initial |
3365 | * value. Currently this function cannot fail since the properties are stored in |
3366 | * a statically sized array. |
3367 | */ |
3368 | void drm_object_attach_property(struct drm_mode_object *obj, |
3369 | struct drm_property *property, |
3370 | uint64_t init_val) |
3371 | { |
3372 | int count = obj->properties->count; |
3373 | |
3374 | if (count == DRM_OBJECT_MAX_PROPERTY) { |
3375 | WARN(1, "Failed to attach object property (type: 0x%x). Please " |
3376 | "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time " |
3377 | "you see this message on the same object type.\n" , |
3378 | obj->type); |
3379 | return; |
3380 | } |
3381 | |
3382 | obj->properties->ids[count] = property->base.id; |
3383 | obj->properties->values[count] = init_val; |
3384 | obj->properties->count++; |
3385 | } |
3386 | EXPORT_SYMBOL(drm_object_attach_property); |
3387 | |
3388 | /** |
3389 | * drm_object_property_set_value - set the value of a property |
3390 | * @obj: drm mode object to set property value for |
3391 | * @property: property to set |
3392 | * @val: value the property should be set to |
3393 | * |
3394 | * This functions sets a given property on a given object. This function only |
3395 | * changes the software state of the property, it does not call into the |
3396 | * driver's ->set_property callback. |
3397 | * |
3398 | * Returns: |
3399 | * Zero on success, error code on failure. |
3400 | */ |
3401 | int drm_object_property_set_value(struct drm_mode_object *obj, |
3402 | struct drm_property *property, uint64_t val) |
3403 | { |
3404 | int i; |
3405 | |
3406 | for (i = 0; i < obj->properties->count; i++) { |
3407 | if (obj->properties->ids[i] == property->base.id) { |
3408 | obj->properties->values[i] = val; |
3409 | return 0; |
3410 | } |
3411 | } |
3412 | |
3413 | return -EINVAL; |
3414 | } |
3415 | EXPORT_SYMBOL(drm_object_property_set_value); |
3416 | |
3417 | /** |
3418 | * drm_object_property_get_value - retrieve the value of a property |
3419 | * @obj: drm mode object to get property value from |
3420 | * @property: property to retrieve |
3421 | * @val: storage for the property value |
3422 | * |
3423 | * This function retrieves the softare state of the given property for the given |
3424 | * property. Since there is no driver callback to retrieve the current property |
3425 | * value this might be out of sync with the hardware, depending upon the driver |
3426 | * and property. |
3427 | * |
3428 | * Returns: |
3429 | * Zero on success, error code on failure. |
3430 | */ |
3431 | int drm_object_property_get_value(struct drm_mode_object *obj, |
3432 | struct drm_property *property, uint64_t *val) |
3433 | { |
3434 | int i; |
3435 | |
3436 | for (i = 0; i < obj->properties->count; i++) { |
3437 | if (obj->properties->ids[i] == property->base.id) { |
3438 | *val = obj->properties->values[i]; |
3439 | return 0; |
3440 | } |
3441 | } |
3442 | |
3443 | return -EINVAL; |
3444 | } |
3445 | EXPORT_SYMBOL(drm_object_property_get_value); |
3446 | |
3447 | /** |
3448 | * drm_mode_getproperty_ioctl - get the current value of a connector's property |
3449 | * @dev: DRM device |
3450 | * @data: ioctl data |
3451 | * @file_priv: DRM file info |
3452 | * |
3453 | * This function retrieves the current value for an connectors's property. |
3454 | * |
3455 | * Called by the user via ioctl. |
3456 | * |
3457 | * Returns: |
3458 | * Zero on success, errno on failure. |
3459 | */ |
3460 | int drm_mode_getproperty_ioctl(struct drm_device *dev, |
3461 | void *data, struct drm_file *file_priv) |
3462 | { |
3463 | struct drm_mode_object *obj; |
3464 | struct drm_mode_get_property *out_resp = data; |
3465 | struct drm_property *property; |
3466 | int enum_count = 0; |
3467 | int blob_count = 0; |
3468 | int value_count = 0; |
3469 | int ret = 0, i; |
3470 | int copied; |
3471 | struct drm_property_enum *prop_enum; |
3472 | struct drm_mode_property_enum __user *enum_ptr; |
3473 | struct drm_property_blob *prop_blob; |
3474 | uint32_t __user *blob_id_ptr; |
3475 | uint64_t __user *values_ptr; |
3476 | uint32_t __user *blob_length_ptr; |
3477 | |
3478 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
3479 | return -EINVAL; |
3480 | |
3481 | drm_modeset_lock_all(dev); |
3482 | obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); |
3483 | if (!obj) { |
3484 | ret = -ENOENT; |
3485 | goto done; |
3486 | } |
3487 | property = obj_to_property(obj); |
3488 | |
3489 | if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { |
3490 | list_for_each_entry(prop_enum, &property->enum_blob_list, head) |
3491 | enum_count++; |
3492 | } else if (property->flags & DRM_MODE_PROP_BLOB) { |
3493 | list_for_each_entry(prop_blob, &property->enum_blob_list, head) |
3494 | blob_count++; |
3495 | } |
3496 | |
3497 | value_count = property->num_values; |
3498 | |
3499 | strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); |
3500 | out_resp->name[DRM_PROP_NAME_LEN-1] = 0; |
3501 | out_resp->flags = property->flags; |
3502 | |
3503 | if ((out_resp->count_values >= value_count) && value_count) { |
3504 | values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; |
3505 | for (i = 0; i < value_count; i++) { |
3506 | if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { |
3507 | ret = -EFAULT; |
3508 | goto done; |
3509 | } |
3510 | } |
3511 | } |
3512 | out_resp->count_values = value_count; |
3513 | |
3514 | if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { |
3515 | if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { |
3516 | copied = 0; |
3517 | enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; |
3518 | list_for_each_entry(prop_enum, &property->enum_blob_list, head) { |
3519 | |
3520 | if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { |
3521 | ret = -EFAULT; |
3522 | goto done; |
3523 | } |
3524 | |
3525 | if (copy_to_user(&enum_ptr[copied].name, |
3526 | &prop_enum->name, DRM_PROP_NAME_LEN)) { |
3527 | ret = -EFAULT; |
3528 | goto done; |
3529 | } |
3530 | copied++; |
3531 | } |
3532 | } |
3533 | out_resp->count_enum_blobs = enum_count; |
3534 | } |
3535 | |
3536 | if (property->flags & DRM_MODE_PROP_BLOB) { |
3537 | if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { |
3538 | copied = 0; |
3539 | blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr; |
3540 | blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr; |
3541 | |
3542 | list_for_each_entry(prop_blob, &property->enum_blob_list, head) { |
3543 | if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { |
3544 | ret = -EFAULT; |
3545 | goto done; |
3546 | } |
3547 | |
3548 | if (put_user(prop_blob->length, blob_length_ptr + copied)) { |
3549 | ret = -EFAULT; |
3550 | goto done; |
3551 | } |
3552 | |
3553 | copied++; |
3554 | } |
3555 | } |
3556 | out_resp->count_enum_blobs = blob_count; |
3557 | } |
3558 | done: |
3559 | drm_modeset_unlock_all(dev); |
3560 | return ret; |
3561 | } |
3562 | |
3563 | static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, |
3564 | void *data) |
3565 | { |
3566 | struct drm_property_blob *blob; |
3567 | int ret; |
3568 | |
3569 | if (!length || !data) |
3570 | return NULL; |
3571 | |
3572 | blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); |
3573 | if (!blob) |
3574 | return NULL; |
3575 | |
3576 | ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); |
3577 | if (ret) { |
3578 | kfree(blob); |
3579 | return NULL; |
3580 | } |
3581 | |
3582 | blob->length = length; |
3583 | |
3584 | memcpy(blob->data, data, length); |
3585 | |
3586 | list_add_tail(&blob->head, &dev->mode_config.property_blob_list); |
3587 | return blob; |
3588 | } |
3589 | |
3590 | static void drm_property_destroy_blob(struct drm_device *dev, |
3591 | struct drm_property_blob *blob) |
3592 | { |
3593 | drm_mode_object_put(dev, &blob->base); |
3594 | list_del(&blob->head); |
3595 | kfree(blob); |
3596 | } |
3597 | |
3598 | /** |
3599 | * drm_mode_getblob_ioctl - get the contents of a blob property value |
3600 | * @dev: DRM device |
3601 | * @data: ioctl data |
3602 | * @file_priv: DRM file info |
3603 | * |
3604 | * This function retrieves the contents of a blob property. The value stored in |
3605 | * an object's blob property is just a normal modeset object id. |
3606 | * |
3607 | * Called by the user via ioctl. |
3608 | * |
3609 | * Returns: |
3610 | * Zero on success, errno on failure. |
3611 | */ |
3612 | int drm_mode_getblob_ioctl(struct drm_device *dev, |
3613 | void *data, struct drm_file *file_priv) |
3614 | { |
3615 | struct drm_mode_object *obj; |
3616 | struct drm_mode_get_blob *out_resp = data; |
3617 | struct drm_property_blob *blob; |
3618 | int ret = 0; |
3619 | void __user *blob_ptr; |
3620 | |
3621 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
3622 | return -EINVAL; |
3623 | |
3624 | drm_modeset_lock_all(dev); |
3625 | obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); |
3626 | if (!obj) { |
3627 | ret = -ENOENT; |
3628 | goto done; |
3629 | } |
3630 | blob = obj_to_blob(obj); |
3631 | |
3632 | if (out_resp->length == blob->length) { |
3633 | blob_ptr = (void __user *)(unsigned long)out_resp->data; |
3634 | if (copy_to_user(blob_ptr, blob->data, blob->length)){ |
3635 | ret = -EFAULT; |
3636 | goto done; |
3637 | } |
3638 | } |
3639 | out_resp->length = blob->length; |
3640 | |
3641 | done: |
3642 | drm_modeset_unlock_all(dev); |
3643 | return ret; |
3644 | } |
3645 | |
3646 | /** |
3647 | * drm_mode_connector_update_edid_property - update the edid property of a connector |
3648 | * @connector: drm connector |
3649 | * @edid: new value of the edid property |
3650 | * |
3651 | * This function creates a new blob modeset object and assigns its id to the |
3652 | * connector's edid property. |
3653 | * |
3654 | * Returns: |
3655 | * Zero on success, errno on failure. |
3656 | */ |
3657 | int drm_mode_connector_update_edid_property(struct drm_connector *connector, |
3658 | struct edid *edid) |
3659 | { |
3660 | struct drm_device *dev = connector->dev; |
3661 | int ret, size; |
3662 | |
3663 | if (connector->edid_blob_ptr) |
3664 | drm_property_destroy_blob(dev, connector->edid_blob_ptr); |
3665 | |
3666 | /* Delete edid, when there is none. */ |
3667 | if (!edid) { |
3668 | connector->edid_blob_ptr = NULL; |
3669 | ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0); |
3670 | return ret; |
3671 | } |
3672 | |
3673 | size = EDID_LENGTH * (1 + edid->extensions); |
3674 | connector->edid_blob_ptr = drm_property_create_blob(connector->dev, |
3675 | size, edid); |
3676 | if (!connector->edid_blob_ptr) |
3677 | return -EINVAL; |
3678 | |
3679 | ret = drm_object_property_set_value(&connector->base, |
3680 | dev->mode_config.edid_property, |
3681 | connector->edid_blob_ptr->base.id); |
3682 | |
3683 | return ret; |
3684 | } |
3685 | EXPORT_SYMBOL(drm_mode_connector_update_edid_property); |
3686 | |
3687 | static bool drm_property_change_is_valid(struct drm_property *property, |
3688 | uint64_t value) |
3689 | { |
3690 | if (property->flags & DRM_MODE_PROP_IMMUTABLE) |
3691 | return false; |
3692 | if (property->flags & DRM_MODE_PROP_RANGE) { |
3693 | if (value < property->values[0] || value > property->values[1]) |
3694 | return false; |
3695 | return true; |
3696 | } else if (property->flags & DRM_MODE_PROP_BITMASK) { |
3697 | int i; |
3698 | uint64_t valid_mask = 0; |
3699 | for (i = 0; i < property->num_values; i++) |
3700 | valid_mask |= (1ULL << property->values[i]); |
3701 | return !(value & ~valid_mask); |
3702 | } else if (property->flags & DRM_MODE_PROP_BLOB) { |
3703 | /* Only the driver knows */ |
3704 | return true; |
3705 | } else { |
3706 | int i; |
3707 | for (i = 0; i < property->num_values; i++) |
3708 | if (property->values[i] == value) |
3709 | return true; |
3710 | return false; |
3711 | } |
3712 | } |
3713 | |
3714 | /** |
3715 | * drm_mode_connector_property_set_ioctl - set the current value of a connector property |
3716 | * @dev: DRM device |
3717 | * @data: ioctl data |
3718 | * @file_priv: DRM file info |
3719 | * |
3720 | * This function sets the current value for a connectors's property. It also |
3721 | * calls into a driver's ->set_property callback to update the hardware state |
3722 | * |
3723 | * Called by the user via ioctl. |
3724 | * |
3725 | * Returns: |
3726 | * Zero on success, errno on failure. |
3727 | */ |
3728 | int drm_mode_connector_property_set_ioctl(struct drm_device *dev, |
3729 | void *data, struct drm_file *file_priv) |
3730 | { |
3731 | struct drm_mode_connector_set_property *conn_set_prop = data; |
3732 | struct drm_mode_obj_set_property obj_set_prop = { |
3733 | .value = conn_set_prop->value, |
3734 | .prop_id = conn_set_prop->prop_id, |
3735 | .obj_id = conn_set_prop->connector_id, |
3736 | .obj_type = DRM_MODE_OBJECT_CONNECTOR |
3737 | }; |
3738 | |
3739 | /* It does all the locking and checking we need */ |
3740 | return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); |
3741 | } |
3742 | |
3743 | static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, |
3744 | struct drm_property *property, |
3745 | uint64_t value) |
3746 | { |
3747 | int ret = -EINVAL; |
3748 | struct drm_connector *connector = obj_to_connector(obj); |
3749 | |
3750 | /* Do DPMS ourselves */ |
3751 | if (property == connector->dev->mode_config.dpms_property) { |
3752 | if (connector->funcs->dpms) |
3753 | (*connector->funcs->dpms)(connector, (int)value); |
3754 | ret = 0; |
3755 | } else if (connector->funcs->set_property) |
3756 | ret = connector->funcs->set_property(connector, property, value); |
3757 | |
3758 | /* store the property value if successful */ |
3759 | if (!ret) |
3760 | drm_object_property_set_value(&connector->base, property, value); |
3761 | return ret; |
3762 | } |
3763 | |
3764 | static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, |
3765 | struct drm_property *property, |
3766 | uint64_t value) |
3767 | { |
3768 | int ret = -EINVAL; |
3769 | struct drm_crtc *crtc = obj_to_crtc(obj); |
3770 | |
3771 | if (crtc->funcs->set_property) |
3772 | ret = crtc->funcs->set_property(crtc, property, value); |
3773 | if (!ret) |
3774 | drm_object_property_set_value(obj, property, value); |
3775 | |
3776 | return ret; |
3777 | } |
3778 | |
3779 | static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj, |
3780 | struct drm_property *property, |
3781 | uint64_t value) |
3782 | { |
3783 | int ret = -EINVAL; |
3784 | struct drm_plane *plane = obj_to_plane(obj); |
3785 | |
3786 | if (plane->funcs->set_property) |
3787 | ret = plane->funcs->set_property(plane, property, value); |
3788 | if (!ret) |
3789 | drm_object_property_set_value(obj, property, value); |
3790 | |
3791 | return ret; |
3792 | } |
3793 | |
3794 | /** |
3795 | * drm_mode_getproperty_ioctl - get the current value of a object's property |
3796 | * @dev: DRM device |
3797 | * @data: ioctl data |
3798 | * @file_priv: DRM file info |
3799 | * |
3800 | * This function retrieves the current value for an object's property. Compared |
3801 | * to the connector specific ioctl this one is extended to also work on crtc and |
3802 | * plane objects. |
3803 | * |
3804 | * Called by the user via ioctl. |
3805 | * |
3806 | * Returns: |
3807 | * Zero on success, errno on failure. |
3808 | */ |
3809 | int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, |
3810 | struct drm_file *file_priv) |
3811 | { |
3812 | struct drm_mode_obj_get_properties *arg = data; |
3813 | struct drm_mode_object *obj; |
3814 | int ret = 0; |
3815 | int i; |
3816 | int copied = 0; |
3817 | int props_count = 0; |
3818 | uint32_t __user *props_ptr; |
3819 | uint64_t __user *prop_values_ptr; |
3820 | |
3821 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
3822 | return -EINVAL; |
3823 | |
3824 | drm_modeset_lock_all(dev); |
3825 | |
3826 | obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); |
3827 | if (!obj) { |
3828 | ret = -ENOENT; |
3829 | goto out; |
3830 | } |
3831 | if (!obj->properties) { |
3832 | ret = -EINVAL; |
3833 | goto out; |
3834 | } |
3835 | |
3836 | props_count = obj->properties->count; |
3837 | |
3838 | /* This ioctl is called twice, once to determine how much space is |
3839 | * needed, and the 2nd time to fill it. */ |
3840 | if ((arg->count_props >= props_count) && props_count) { |
3841 | copied = 0; |
3842 | props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); |
3843 | prop_values_ptr = (uint64_t __user *)(unsigned long) |
3844 | (arg->prop_values_ptr); |
3845 | for (i = 0; i < props_count; i++) { |
3846 | if (put_user(obj->properties->ids[i], |
3847 | props_ptr + copied)) { |
3848 | ret = -EFAULT; |
3849 | goto out; |
3850 | } |
3851 | if (put_user(obj->properties->values[i], |
3852 | prop_values_ptr + copied)) { |
3853 | ret = -EFAULT; |
3854 | goto out; |
3855 | } |
3856 | copied++; |
3857 | } |
3858 | } |
3859 | arg->count_props = props_count; |
3860 | out: |
3861 | drm_modeset_unlock_all(dev); |
3862 | return ret; |
3863 | } |
3864 | |
3865 | /** |
3866 | * drm_mode_obj_set_property_ioctl - set the current value of an object's property |
3867 | * @dev: DRM device |
3868 | * @data: ioctl data |
3869 | * @file_priv: DRM file info |
3870 | * |
3871 | * This function sets the current value for an object's property. It also calls |
3872 | * into a driver's ->set_property callback to update the hardware state. |
3873 | * Compared to the connector specific ioctl this one is extended to also work on |
3874 | * crtc and plane objects. |
3875 | * |
3876 | * Called by the user via ioctl. |
3877 | * |
3878 | * Returns: |
3879 | * Zero on success, errno on failure. |
3880 | */ |
3881 | int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, |
3882 | struct drm_file *file_priv) |
3883 | { |
3884 | struct drm_mode_obj_set_property *arg = data; |
3885 | struct drm_mode_object *arg_obj; |
3886 | struct drm_mode_object *prop_obj; |
3887 | struct drm_property *property; |
3888 | int ret = -EINVAL; |
3889 | int i; |
3890 | |
3891 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
3892 | return -EINVAL; |
3893 | |
3894 | drm_modeset_lock_all(dev); |
3895 | |
3896 | arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); |
3897 | if (!arg_obj) { |
3898 | ret = -ENOENT; |
3899 | goto out; |
3900 | } |
3901 | if (!arg_obj->properties) |
3902 | goto out; |
3903 | |
3904 | for (i = 0; i < arg_obj->properties->count; i++) |
3905 | if (arg_obj->properties->ids[i] == arg->prop_id) |
3906 | break; |
3907 | |
3908 | if (i == arg_obj->properties->count) |
3909 | goto out; |
3910 | |
3911 | prop_obj = drm_mode_object_find(dev, arg->prop_id, |
3912 | DRM_MODE_OBJECT_PROPERTY); |
3913 | if (!prop_obj) { |
3914 | ret = -ENOENT; |
3915 | goto out; |
3916 | } |
3917 | property = obj_to_property(prop_obj); |
3918 | |
3919 | if (!drm_property_change_is_valid(property, arg->value)) |
3920 | goto out; |
3921 | |
3922 | switch (arg_obj->type) { |
3923 | case DRM_MODE_OBJECT_CONNECTOR: |
3924 | ret = drm_mode_connector_set_obj_prop(arg_obj, property, |
3925 | arg->value); |
3926 | break; |
3927 | case DRM_MODE_OBJECT_CRTC: |
3928 | ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value); |
3929 | break; |
3930 | case DRM_MODE_OBJECT_PLANE: |
3931 | ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value); |
3932 | break; |
3933 | } |
3934 | |
3935 | out: |
3936 | drm_modeset_unlock_all(dev); |
3937 | return ret; |
3938 | } |
3939 | |
3940 | /** |
3941 | * drm_mode_connector_attach_encoder - attach a connector to an encoder |
3942 | * @connector: connector to attach |
3943 | * @encoder: encoder to attach @connector to |
3944 | * |
3945 | * This function links up a connector to an encoder. Note that the routing |
3946 | * restrictions between encoders and crtcs are exposed to userspace through the |
3947 | * possible_clones and possible_crtcs bitmasks. |
3948 | * |
3949 | * Returns: |
3950 | * Zero on success, errno on failure. |
3951 | */ |
3952 | int drm_mode_connector_attach_encoder(struct drm_connector *connector, |
3953 | struct drm_encoder *encoder) |
3954 | { |
3955 | int i; |
3956 | |
3957 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { |
3958 | if (connector->encoder_ids[i] == 0) { |
3959 | connector->encoder_ids[i] = encoder->base.id; |
3960 | return 0; |
3961 | } |
3962 | } |
3963 | return -ENOMEM; |
3964 | } |
3965 | EXPORT_SYMBOL(drm_mode_connector_attach_encoder); |
3966 | |
3967 | /** |
3968 | * drm_mode_crtc_set_gamma_size - set the gamma table size |
3969 | * @crtc: CRTC to set the gamma table size for |
3970 | * @gamma_size: size of the gamma table |
3971 | * |
3972 | * Drivers which support gamma tables should set this to the supported gamma |
3973 | * table size when initializing the CRTC. Currently the drm core only supports a |
3974 | * fixed gamma table size. |
3975 | * |
3976 | * Returns: |
3977 | * Zero on success, errno on failure. |
3978 | */ |
3979 | int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, |
3980 | int gamma_size) |
3981 | { |
3982 | crtc->gamma_size = gamma_size; |
3983 | |
3984 | crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); |
3985 | if (!crtc->gamma_store) { |
3986 | crtc->gamma_size = 0; |
3987 | return -ENOMEM; |
3988 | } |
3989 | |
3990 | return 0; |
3991 | } |
3992 | EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); |
3993 | |
3994 | /** |
3995 | * drm_mode_gamma_set_ioctl - set the gamma table |
3996 | * @dev: DRM device |
3997 | * @data: ioctl data |
3998 | * @file_priv: DRM file info |
3999 | * |
4000 | * Set the gamma table of a CRTC to the one passed in by the user. Userspace can |
4001 | * inquire the required gamma table size through drm_mode_gamma_get_ioctl. |
4002 | * |
4003 | * Called by the user via ioctl. |
4004 | * |
4005 | * Returns: |
4006 | * Zero on success, errno on failure. |
4007 | */ |
4008 | int drm_mode_gamma_set_ioctl(struct drm_device *dev, |
4009 | void *data, struct drm_file *file_priv) |
4010 | { |
4011 | struct drm_mode_crtc_lut *crtc_lut = data; |
4012 | struct drm_mode_object *obj; |
4013 | struct drm_crtc *crtc; |
4014 | void *r_base, *g_base, *b_base; |
4015 | int size; |
4016 | int ret = 0; |
4017 | |
4018 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4019 | return -EINVAL; |
4020 | |
4021 | drm_modeset_lock_all(dev); |
4022 | obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); |
4023 | if (!obj) { |
4024 | ret = -ENOENT; |
4025 | goto out; |
4026 | } |
4027 | crtc = obj_to_crtc(obj); |
4028 | |
4029 | if (crtc->funcs->gamma_set == NULL) { |
4030 | ret = -ENOSYS; |
4031 | goto out; |
4032 | } |
4033 | |
4034 | /* memcpy into gamma store */ |
4035 | if (crtc_lut->gamma_size != crtc->gamma_size) { |
4036 | ret = -EINVAL; |
4037 | goto out; |
4038 | } |
4039 | |
4040 | size = crtc_lut->gamma_size * (sizeof(uint16_t)); |
4041 | r_base = crtc->gamma_store; |
4042 | if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { |
4043 | ret = -EFAULT; |
4044 | goto out; |
4045 | } |
4046 | |
4047 | g_base = (char *)r_base + size; |
4048 | if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { |
4049 | ret = -EFAULT; |
4050 | goto out; |
4051 | } |
4052 | |
4053 | b_base = (char *)g_base + size; |
4054 | if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { |
4055 | ret = -EFAULT; |
4056 | goto out; |
4057 | } |
4058 | |
4059 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); |
4060 | |
4061 | out: |
4062 | drm_modeset_unlock_all(dev); |
4063 | return ret; |
4064 | |
4065 | } |
4066 | |
4067 | /** |
4068 | * drm_mode_gamma_get_ioctl - get the gamma table |
4069 | * @dev: DRM device |
4070 | * @data: ioctl data |
4071 | * @file_priv: DRM file info |
4072 | * |
4073 | * Copy the current gamma table into the storage provided. This also provides |
4074 | * the gamma table size the driver expects, which can be used to size the |
4075 | * allocated storage. |
4076 | * |
4077 | * Called by the user via ioctl. |
4078 | * |
4079 | * Returns: |
4080 | * Zero on success, errno on failure. |
4081 | */ |
4082 | int drm_mode_gamma_get_ioctl(struct drm_device *dev, |
4083 | void *data, struct drm_file *file_priv) |
4084 | { |
4085 | struct drm_mode_crtc_lut *crtc_lut = data; |
4086 | struct drm_mode_object *obj; |
4087 | struct drm_crtc *crtc; |
4088 | void *r_base, *g_base, *b_base; |
4089 | int size; |
4090 | int ret = 0; |
4091 | |
4092 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4093 | return -EINVAL; |
4094 | |
4095 | drm_modeset_lock_all(dev); |
4096 | obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); |
4097 | if (!obj) { |
4098 | ret = -ENOENT; |
4099 | goto out; |
4100 | } |
4101 | crtc = obj_to_crtc(obj); |
4102 | |
4103 | /* memcpy into gamma store */ |
4104 | if (crtc_lut->gamma_size != crtc->gamma_size) { |
4105 | ret = -EINVAL; |
4106 | goto out; |
4107 | } |
4108 | |
4109 | size = crtc_lut->gamma_size * (sizeof(uint16_t)); |
4110 | r_base = crtc->gamma_store; |
4111 | if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { |
4112 | ret = -EFAULT; |
4113 | goto out; |
4114 | } |
4115 | |
4116 | g_base = (char *)r_base + size; |
4117 | if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { |
4118 | ret = -EFAULT; |
4119 | goto out; |
4120 | } |
4121 | |
4122 | b_base = (char *)g_base + size; |
4123 | if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { |
4124 | ret = -EFAULT; |
4125 | goto out; |
4126 | } |
4127 | out: |
4128 | drm_modeset_unlock_all(dev); |
4129 | return ret; |
4130 | } |
4131 | |
4132 | /** |
4133 | * drm_mode_page_flip_ioctl - schedule an asynchronous fb update |
4134 | * @dev: DRM device |
4135 | * @data: ioctl data |
4136 | * @file_priv: DRM file info |
4137 | * |
4138 | * This schedules an asynchronous update on a given CRTC, called page flip. |
4139 | * Optionally a drm event is generated to signal the completion of the event. |
4140 | * Generic drivers cannot assume that a pageflip with changed framebuffer |
4141 | * properties (including driver specific metadata like tiling layout) will work, |
4142 | * but some drivers support e.g. pixel format changes through the pageflip |
4143 | * ioctl. |
4144 | * |
4145 | * Called by the user via ioctl. |
4146 | * |
4147 | * Returns: |
4148 | * Zero on success, errno on failure. |
4149 | */ |
4150 | int drm_mode_page_flip_ioctl(struct drm_device *dev, |
4151 | void *data, struct drm_file *file_priv) |
4152 | { |
4153 | struct drm_mode_crtc_page_flip *page_flip = data; |
4154 | struct drm_mode_object *obj; |
4155 | struct drm_crtc *crtc; |
4156 | struct drm_framebuffer *fb = NULL, *old_fb = NULL; |
4157 | struct drm_pending_vblank_event *e = NULL; |
4158 | unsigned long flags; |
4159 | int ret = -EINVAL; |
4160 | |
4161 | if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || |
4162 | page_flip->reserved != 0) |
4163 | return -EINVAL; |
4164 | |
4165 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) |
4166 | return -EINVAL; |
4167 | |
4168 | obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC); |
4169 | if (!obj) |
4170 | return -ENOENT; |
4171 | crtc = obj_to_crtc(obj); |
4172 | |
4173 | mutex_lock(&crtc->mutex); |
4174 | if (crtc->primary->fb == NULL) { |
4175 | /* The framebuffer is currently unbound, presumably |
4176 | * due to a hotplug event, that userspace has not |
4177 | * yet discovered. |
4178 | */ |
4179 | ret = -EBUSY; |
4180 | goto out; |
4181 | } |
4182 | |
4183 | if (crtc->funcs->page_flip == NULL) |
4184 | goto out; |
4185 | |
4186 | fb = drm_framebuffer_lookup(dev, page_flip->fb_id); |
4187 | if (!fb) { |
4188 | ret = -ENOENT; |
4189 | goto out; |
4190 | } |
4191 | |
4192 | ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb); |
4193 | if (ret) |
4194 | goto out; |
4195 | |
4196 | if (crtc->primary->fb->pixel_format != fb->pixel_format) { |
4197 | DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n" ); |
4198 | ret = -EINVAL; |
4199 | goto out; |
4200 | } |
4201 | |
4202 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
4203 | ret = -ENOMEM; |
4204 | spin_lock_irqsave(&dev->event_lock, flags); |
4205 | if (file_priv->event_space < sizeof e->event) { |
4206 | spin_unlock_irqrestore(&dev->event_lock, flags); |
4207 | goto out; |
4208 | } |
4209 | file_priv->event_space -= sizeof e->event; |
4210 | spin_unlock_irqrestore(&dev->event_lock, flags); |
4211 | |
4212 | e = kzalloc(sizeof *e, GFP_KERNEL); |
4213 | if (e == NULL) { |
4214 | spin_lock_irqsave(&dev->event_lock, flags); |
4215 | file_priv->event_space += sizeof e->event; |
4216 | spin_unlock_irqrestore(&dev->event_lock, flags); |
4217 | goto out; |
4218 | } |
4219 | |
4220 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; |
4221 | e->event.base.length = sizeof e->event; |
4222 | e->event.user_data = page_flip->user_data; |
4223 | e->base.event = &e->event.base; |
4224 | e->base.file_priv = file_priv; |
4225 | e->base.destroy = |
4226 | (void (*) (struct drm_pending_event *)) kfree; |
4227 | } |
4228 | |
4229 | old_fb = crtc->primary->fb; |
4230 | ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); |
4231 | if (ret) { |
4232 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
4233 | spin_lock_irqsave(&dev->event_lock, flags); |
4234 | file_priv->event_space += sizeof e->event; |
4235 | spin_unlock_irqrestore(&dev->event_lock, flags); |
4236 | kfree(e); |
4237 | } |
4238 | /* Keep the old fb, don't unref it. */ |
4239 | old_fb = NULL; |
4240 | } else { |
4241 | /* |
4242 | * Warn if the driver hasn't properly updated the crtc->fb |
4243 | * field to reflect that the new framebuffer is now used. |
4244 | * Failing to do so will screw with the reference counting |
4245 | * on framebuffers. |
4246 | */ |
4247 | WARN_ON(crtc->primary->fb != fb); |
4248 | /* Unref only the old framebuffer. */ |
4249 | fb = NULL; |
4250 | } |
4251 | |
4252 | out: |
4253 | if (fb) |
4254 | drm_framebuffer_unreference(fb); |
4255 | if (old_fb) |
4256 | drm_framebuffer_unreference(old_fb); |
4257 | mutex_unlock(&crtc->mutex); |
4258 | |
4259 | return ret; |
4260 | } |
4261 | |
4262 | /** |
4263 | * drm_mode_config_reset - call ->reset callbacks |
4264 | * @dev: drm device |
4265 | * |
4266 | * This functions calls all the crtc's, encoder's and connector's ->reset |
4267 | * callback. Drivers can use this in e.g. their driver load or resume code to |
4268 | * reset hardware and software state. |
4269 | */ |
4270 | void drm_mode_config_reset(struct drm_device *dev) |
4271 | { |
4272 | struct drm_crtc *crtc; |
4273 | struct drm_encoder *encoder; |
4274 | struct drm_connector *connector; |
4275 | |
4276 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
4277 | if (crtc->funcs->reset) |
4278 | crtc->funcs->reset(crtc); |
4279 | |
4280 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
4281 | if (encoder->funcs->reset) |
4282 | encoder->funcs->reset(encoder); |
4283 | |
4284 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
4285 | connector->status = connector_status_unknown; |
4286 | |
4287 | if (connector->funcs->reset) |
4288 | connector->funcs->reset(connector); |
4289 | } |
4290 | } |
4291 | EXPORT_SYMBOL(drm_mode_config_reset); |
4292 | |
4293 | /** |
4294 | * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer |
4295 | * @dev: DRM device |
4296 | * @data: ioctl data |
4297 | * @file_priv: DRM file info |
4298 | * |
4299 | * This creates a new dumb buffer in the driver's backing storage manager (GEM, |
4300 | * TTM or something else entirely) and returns the resulting buffer handle. This |
4301 | * handle can then be wrapped up into a framebuffer modeset object. |
4302 | * |
4303 | * Note that userspace is not allowed to use such objects for render |
4304 | * acceleration - drivers must create their own private ioctls for such a use |
4305 | * case. |
4306 | * |
4307 | * Called by the user via ioctl. |
4308 | * |
4309 | * Returns: |
4310 | * Zero on success, errno on failure. |
4311 | */ |
4312 | int drm_mode_create_dumb_ioctl(struct drm_device *dev, |
4313 | void *data, struct drm_file *file_priv) |
4314 | { |
4315 | struct drm_mode_create_dumb *args = data; |
4316 | u32 cpp, stride, size; |
4317 | |
4318 | if (!dev->driver->dumb_create) |
4319 | return -ENOSYS; |
4320 | if (!args->width || !args->height || !args->bpp) |
4321 | return -EINVAL; |
4322 | |
4323 | /* overflow checks for 32bit size calculations */ |
4324 | cpp = DIV_ROUND_UP(args->bpp, 8); |
4325 | if (cpp > 0xffffffffU / args->width) |
4326 | return -EINVAL; |
4327 | stride = cpp * args->width; |
4328 | if (args->height > 0xffffffffU / stride) |
4329 | return -EINVAL; |
4330 | |
4331 | /* test for wrap-around */ |
4332 | size = args->height * stride; |
4333 | if (PAGE_ALIGN(size) == 0) |
4334 | return -EINVAL; |
4335 | |
4336 | return dev->driver->dumb_create(file_priv, dev, args); |
4337 | } |
4338 | |
4339 | /** |
4340 | * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer |
4341 | * @dev: DRM device |
4342 | * @data: ioctl data |
4343 | * @file_priv: DRM file info |
4344 | * |
4345 | * Allocate an offset in the drm device node's address space to be able to |
4346 | * memory map a dumb buffer. |
4347 | * |
4348 | * Called by the user via ioctl. |
4349 | * |
4350 | * Returns: |
4351 | * Zero on success, errno on failure. |
4352 | */ |
4353 | int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, |
4354 | void *data, struct drm_file *file_priv) |
4355 | { |
4356 | struct drm_mode_map_dumb *args = data; |
4357 | |
4358 | /* call driver ioctl to get mmap offset */ |
4359 | if (!dev->driver->dumb_map_offset) |
4360 | return -ENOSYS; |
4361 | |
4362 | return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); |
4363 | } |
4364 | |
4365 | /** |
4366 | * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer |
4367 | * @dev: DRM device |
4368 | * @data: ioctl data |
4369 | * @file_priv: DRM file info |
4370 | * |
4371 | * This destroys the userspace handle for the given dumb backing storage buffer. |
4372 | * Since buffer objects must be reference counted in the kernel a buffer object |
4373 | * won't be immediately freed if a framebuffer modeset object still uses it. |
4374 | * |
4375 | * Called by the user via ioctl. |
4376 | * |
4377 | * Returns: |
4378 | * Zero on success, errno on failure. |
4379 | */ |
4380 | int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, |
4381 | void *data, struct drm_file *file_priv) |
4382 | { |
4383 | struct drm_mode_destroy_dumb *args = data; |
4384 | |
4385 | if (!dev->driver->dumb_destroy) |
4386 | return -ENOSYS; |
4387 | |
4388 | return dev->driver->dumb_destroy(file_priv, dev, args->handle); |
4389 | } |
4390 | |
4391 | /** |
4392 | * drm_fb_get_bpp_depth - get the bpp/depth values for format |
4393 | * @format: pixel format (DRM_FORMAT_*) |
4394 | * @depth: storage for the depth value |
4395 | * @bpp: storage for the bpp value |
4396 | * |
4397 | * This only supports RGB formats here for compat with code that doesn't use |
4398 | * pixel formats directly yet. |
4399 | */ |
4400 | void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, |
4401 | int *bpp) |
4402 | { |
4403 | switch (format) { |
4404 | case DRM_FORMAT_C8: |
4405 | case DRM_FORMAT_RGB332: |
4406 | case DRM_FORMAT_BGR233: |
4407 | *depth = 8; |
4408 | *bpp = 8; |
4409 | break; |
4410 | case DRM_FORMAT_XRGB1555: |
4411 | case DRM_FORMAT_XBGR1555: |
4412 | case DRM_FORMAT_RGBX5551: |
4413 | case DRM_FORMAT_BGRX5551: |
4414 | case DRM_FORMAT_ARGB1555: |
4415 | case DRM_FORMAT_ABGR1555: |
4416 | case DRM_FORMAT_RGBA5551: |
4417 | case DRM_FORMAT_BGRA5551: |
4418 | *depth = 15; |
4419 | *bpp = 16; |
4420 | break; |
4421 | case DRM_FORMAT_RGB565: |
4422 | case DRM_FORMAT_BGR565: |
4423 | *depth = 16; |
4424 | *bpp = 16; |
4425 | break; |
4426 | case DRM_FORMAT_RGB888: |
4427 | case DRM_FORMAT_BGR888: |
4428 | *depth = 24; |
4429 | *bpp = 24; |
4430 | break; |
4431 | case DRM_FORMAT_XRGB8888: |
4432 | case DRM_FORMAT_XBGR8888: |
4433 | case DRM_FORMAT_RGBX8888: |
4434 | case DRM_FORMAT_BGRX8888: |
4435 | *depth = 24; |
4436 | *bpp = 32; |
4437 | break; |
4438 | case DRM_FORMAT_XRGB2101010: |
4439 | case DRM_FORMAT_XBGR2101010: |
4440 | case DRM_FORMAT_RGBX1010102: |
4441 | case DRM_FORMAT_BGRX1010102: |
4442 | case DRM_FORMAT_ARGB2101010: |
4443 | case DRM_FORMAT_ABGR2101010: |
4444 | case DRM_FORMAT_RGBA1010102: |
4445 | case DRM_FORMAT_BGRA1010102: |
4446 | *depth = 30; |
4447 | *bpp = 32; |
4448 | break; |
4449 | case DRM_FORMAT_ARGB8888: |
4450 | case DRM_FORMAT_ABGR8888: |
4451 | case DRM_FORMAT_RGBA8888: |
4452 | case DRM_FORMAT_BGRA8888: |
4453 | *depth = 32; |
4454 | *bpp = 32; |
4455 | break; |
4456 | default: |
4457 | DRM_DEBUG_KMS("unsupported pixel format %s\n" , |
4458 | drm_get_format_name(format)); |
4459 | *depth = 0; |
4460 | *bpp = 0; |
4461 | break; |
4462 | } |
4463 | } |
4464 | EXPORT_SYMBOL(drm_fb_get_bpp_depth); |
4465 | |
4466 | /** |
4467 | * drm_format_num_planes - get the number of planes for format |
4468 | * @format: pixel format (DRM_FORMAT_*) |
4469 | * |
4470 | * Returns: |
4471 | * The number of planes used by the specified pixel format. |
4472 | */ |
4473 | int drm_format_num_planes(uint32_t format) |
4474 | { |
4475 | switch (format) { |
4476 | case DRM_FORMAT_YUV410: |
4477 | case DRM_FORMAT_YVU410: |
4478 | case DRM_FORMAT_YUV411: |
4479 | case DRM_FORMAT_YVU411: |
4480 | case DRM_FORMAT_YUV420: |
4481 | case DRM_FORMAT_YVU420: |
4482 | case DRM_FORMAT_YUV422: |
4483 | case DRM_FORMAT_YVU422: |
4484 | case DRM_FORMAT_YUV444: |
4485 | case DRM_FORMAT_YVU444: |
4486 | return 3; |
4487 | case DRM_FORMAT_NV12: |
4488 | case DRM_FORMAT_NV21: |
4489 | case DRM_FORMAT_NV16: |
4490 | case DRM_FORMAT_NV61: |
4491 | case DRM_FORMAT_NV24: |
4492 | case DRM_FORMAT_NV42: |
4493 | return 2; |
4494 | default: |
4495 | return 1; |
4496 | } |
4497 | } |
4498 | EXPORT_SYMBOL(drm_format_num_planes); |
4499 | |
4500 | /** |
4501 | * drm_format_plane_cpp - determine the bytes per pixel value |
4502 | * @format: pixel format (DRM_FORMAT_*) |
4503 | * @plane: plane index |
4504 | * |
4505 | * Returns: |
4506 | * The bytes per pixel value for the specified plane. |
4507 | */ |
4508 | int drm_format_plane_cpp(uint32_t format, int plane) |
4509 | { |
4510 | unsigned int depth; |
4511 | int bpp; |
4512 | |
4513 | if (plane >= drm_format_num_planes(format)) |
4514 | return 0; |
4515 | |
4516 | switch (format) { |
4517 | case DRM_FORMAT_YUYV: |
4518 | case DRM_FORMAT_YVYU: |
4519 | case DRM_FORMAT_UYVY: |
4520 | case DRM_FORMAT_VYUY: |
4521 | return 2; |
4522 | case DRM_FORMAT_NV12: |
4523 | case DRM_FORMAT_NV21: |
4524 | case DRM_FORMAT_NV16: |
4525 | case DRM_FORMAT_NV61: |
4526 | case DRM_FORMAT_NV24: |
4527 | case DRM_FORMAT_NV42: |
4528 | return plane ? 2 : 1; |
4529 | case DRM_FORMAT_YUV410: |
4530 | case DRM_FORMAT_YVU410: |
4531 | case DRM_FORMAT_YUV411: |
4532 | case DRM_FORMAT_YVU411: |
4533 | case DRM_FORMAT_YUV420: |
4534 | case DRM_FORMAT_YVU420: |
4535 | case DRM_FORMAT_YUV422: |
4536 | case DRM_FORMAT_YVU422: |
4537 | case DRM_FORMAT_YUV444: |
4538 | case DRM_FORMAT_YVU444: |
4539 | return 1; |
4540 | default: |
4541 | drm_fb_get_bpp_depth(format, &depth, &bpp); |
4542 | return bpp >> 3; |
4543 | } |
4544 | } |
4545 | EXPORT_SYMBOL(drm_format_plane_cpp); |
4546 | |
4547 | /** |
4548 | * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor |
4549 | * @format: pixel format (DRM_FORMAT_*) |
4550 | * |
4551 | * Returns: |
4552 | * The horizontal chroma subsampling factor for the |
4553 | * specified pixel format. |
4554 | */ |
4555 | int drm_format_horz_chroma_subsampling(uint32_t format) |
4556 | { |
4557 | switch (format) { |
4558 | case DRM_FORMAT_YUV411: |
4559 | case DRM_FORMAT_YVU411: |
4560 | case DRM_FORMAT_YUV410: |
4561 | case DRM_FORMAT_YVU410: |
4562 | return 4; |
4563 | case DRM_FORMAT_YUYV: |
4564 | case DRM_FORMAT_YVYU: |
4565 | case DRM_FORMAT_UYVY: |
4566 | case DRM_FORMAT_VYUY: |
4567 | case DRM_FORMAT_NV12: |
4568 | case DRM_FORMAT_NV21: |
4569 | case DRM_FORMAT_NV16: |
4570 | case DRM_FORMAT_NV61: |
4571 | case DRM_FORMAT_YUV422: |
4572 | case DRM_FORMAT_YVU422: |
4573 | case DRM_FORMAT_YUV420: |
4574 | case DRM_FORMAT_YVU420: |
4575 | return 2; |
4576 | default: |
4577 | return 1; |
4578 | } |
4579 | } |
4580 | EXPORT_SYMBOL(drm_format_horz_chroma_subsampling); |
4581 | |
4582 | /** |
4583 | * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor |
4584 | * @format: pixel format (DRM_FORMAT_*) |
4585 | * |
4586 | * Returns: |
4587 | * The vertical chroma subsampling factor for the |
4588 | * specified pixel format. |
4589 | */ |
4590 | int drm_format_vert_chroma_subsampling(uint32_t format) |
4591 | { |
4592 | switch (format) { |
4593 | case DRM_FORMAT_YUV410: |
4594 | case DRM_FORMAT_YVU410: |
4595 | return 4; |
4596 | case DRM_FORMAT_YUV420: |
4597 | case DRM_FORMAT_YVU420: |
4598 | case DRM_FORMAT_NV12: |
4599 | case DRM_FORMAT_NV21: |
4600 | return 2; |
4601 | default: |
4602 | return 1; |
4603 | } |
4604 | } |
4605 | EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); |
4606 | |
4607 | /** |
4608 | * drm_mode_config_init - initialize DRM mode_configuration structure |
4609 | * @dev: DRM device |
4610 | * |
4611 | * Initialize @dev's mode_config structure, used for tracking the graphics |
4612 | * configuration of @dev. |
4613 | * |
4614 | * Since this initializes the modeset locks, no locking is possible. Which is no |
4615 | * problem, since this should happen single threaded at init time. It is the |
4616 | * driver's problem to ensure this guarantee. |
4617 | * |
4618 | */ |
4619 | void drm_mode_config_init(struct drm_device *dev) |
4620 | { |
4621 | #ifdef __NetBSD__ |
4622 | linux_mutex_init(&dev->mode_config.mutex); |
4623 | linux_mutex_init(&dev->mode_config.idr_mutex); |
4624 | linux_mutex_init(&dev->mode_config.fb_lock); |
4625 | #else |
4626 | mutex_init(&dev->mode_config.mutex); |
4627 | mutex_init(&dev->mode_config.idr_mutex); |
4628 | mutex_init(&dev->mode_config.fb_lock); |
4629 | #endif |
4630 | INIT_LIST_HEAD(&dev->mode_config.fb_list); |
4631 | INIT_LIST_HEAD(&dev->mode_config.crtc_list); |
4632 | INIT_LIST_HEAD(&dev->mode_config.connector_list); |
4633 | INIT_LIST_HEAD(&dev->mode_config.bridge_list); |
4634 | INIT_LIST_HEAD(&dev->mode_config.encoder_list); |
4635 | INIT_LIST_HEAD(&dev->mode_config.property_list); |
4636 | INIT_LIST_HEAD(&dev->mode_config.property_blob_list); |
4637 | INIT_LIST_HEAD(&dev->mode_config.plane_list); |
4638 | idr_init(&dev->mode_config.crtc_idr); |
4639 | |
4640 | drm_modeset_lock_all(dev); |
4641 | drm_mode_create_standard_connector_properties(dev); |
4642 | drm_mode_create_standard_plane_properties(dev); |
4643 | drm_modeset_unlock_all(dev); |
4644 | |
4645 | /* Just to be sure */ |
4646 | dev->mode_config.num_fb = 0; |
4647 | dev->mode_config.num_connector = 0; |
4648 | dev->mode_config.num_crtc = 0; |
4649 | dev->mode_config.num_encoder = 0; |
4650 | dev->mode_config.num_overlay_plane = 0; |
4651 | dev->mode_config.num_total_plane = 0; |
4652 | } |
4653 | EXPORT_SYMBOL(drm_mode_config_init); |
4654 | |
4655 | /** |
4656 | * drm_mode_config_cleanup - free up DRM mode_config info |
4657 | * @dev: DRM device |
4658 | * |
4659 | * Free up all the connectors and CRTCs associated with this DRM device, then |
4660 | * free up the framebuffers and associated buffer objects. |
4661 | * |
4662 | * Note that since this /should/ happen single-threaded at driver/device |
4663 | * teardown time, no locking is required. It's the driver's job to ensure that |
4664 | * this guarantee actually holds true. |
4665 | * |
4666 | * FIXME: cleanup any dangling user buffer objects too |
4667 | */ |
4668 | void drm_mode_config_cleanup(struct drm_device *dev) |
4669 | { |
4670 | struct drm_connector *connector, *ot; |
4671 | struct drm_crtc *crtc, *ct; |
4672 | struct drm_encoder *encoder, *enct; |
4673 | struct drm_bridge *bridge, *brt; |
4674 | struct drm_framebuffer *fb, *fbt; |
4675 | struct drm_property *property, *pt; |
4676 | struct drm_property_blob *blob, *bt; |
4677 | struct drm_plane *plane, *plt; |
4678 | |
4679 | list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, |
4680 | head) { |
4681 | encoder->funcs->destroy(encoder); |
4682 | } |
4683 | |
4684 | list_for_each_entry_safe(bridge, brt, |
4685 | &dev->mode_config.bridge_list, head) { |
4686 | bridge->funcs->destroy(bridge); |
4687 | } |
4688 | |
4689 | list_for_each_entry_safe(connector, ot, |
4690 | &dev->mode_config.connector_list, head) { |
4691 | connector->funcs->destroy(connector); |
4692 | } |
4693 | |
4694 | list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, |
4695 | head) { |
4696 | drm_property_destroy(dev, property); |
4697 | } |
4698 | |
4699 | list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, |
4700 | head) { |
4701 | drm_property_destroy_blob(dev, blob); |
4702 | } |
4703 | |
4704 | /* |
4705 | * Single-threaded teardown context, so it's not required to grab the |
4706 | * fb_lock to protect against concurrent fb_list access. Contrary, it |
4707 | * would actually deadlock with the drm_framebuffer_cleanup function. |
4708 | * |
4709 | * Also, if there are any framebuffers left, that's a driver leak now, |
4710 | * so politely WARN about this. |
4711 | */ |
4712 | WARN_ON(!list_empty(&dev->mode_config.fb_list)); |
4713 | list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { |
4714 | drm_framebuffer_remove(fb); |
4715 | } |
4716 | |
4717 | list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, |
4718 | head) { |
4719 | plane->funcs->destroy(plane); |
4720 | } |
4721 | |
4722 | list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { |
4723 | crtc->funcs->destroy(crtc); |
4724 | } |
4725 | |
4726 | idr_destroy(&dev->mode_config.crtc_idr); |
4727 | |
4728 | #ifdef __NetBSD__ |
4729 | linux_mutex_init(&dev->mode_config.fb_lock); |
4730 | linux_mutex_init(&dev->mode_config.idr_mutex); |
4731 | linux_mutex_init(&dev->mode_config.mutex); |
4732 | #endif |
4733 | } |
4734 | EXPORT_SYMBOL(drm_mode_config_cleanup); |
4735 | |