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drm: integer overflow in drm_mode_dirtyfb_ioctl()
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / gpu / drm / drm_crtc.c
blob2410c4078f3a56727c3e6cbb58dbaea9e5dd3e4b
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/list.h>
33 #include <linux/slab.h>
34 #include "drm.h"
35 #include "drmP.h"
36 #include "drm_crtc.h"
37 #include "drm_edid.h"
38
39 struct drm_prop_enum_list {
40 int type;
41 char *name;
42 };
43
44 /* Avoid boilerplate. I'm tired of typing. */
45 #define DRM_ENUM_NAME_FN(fnname, list) \
46 char *fnname(int val) \
47 { \
48 int i; \
49 for (i = 0; i < ARRAY_SIZE(list); i++) { \
50 if (list[i].type == val) \
51 return list[i].name; \
52 } \
53 return "(unknown)"; \
54 }
55
56 /*
57 * Global properties
58 */
59 static struct drm_prop_enum_list drm_dpms_enum_list[] =
60 { { DRM_MODE_DPMS_ON, "On" },
61 { DRM_MODE_DPMS_STANDBY, "Standby" },
62 { DRM_MODE_DPMS_SUSPEND, "Suspend" },
63 { DRM_MODE_DPMS_OFF, "Off" }
64 };
65
66 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
67
68 /*
69 * Optional properties
70 */
71 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
72 {
73 { DRM_MODE_SCALE_NONE, "None" },
74 { DRM_MODE_SCALE_FULLSCREEN, "Full" },
75 { DRM_MODE_SCALE_CENTER, "Center" },
76 { DRM_MODE_SCALE_ASPECT, "Full aspect" },
77 };
78
79 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
80 {
81 { DRM_MODE_DITHERING_OFF, "Off" },
82 { DRM_MODE_DITHERING_ON, "On" },
83 { DRM_MODE_DITHERING_AUTO, "Automatic" },
84 };
85
86 /*
87 * Non-global properties, but "required" for certain connectors.
88 */
89 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
90 {
91 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
92 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
93 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
94 };
95
96 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
97
98 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
99 {
100 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
101 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
102 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
103 };
104
105 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
106 drm_dvi_i_subconnector_enum_list)
107
108 static struct drm_prop_enum_list drm_tv_select_enum_list[] =
109 {
110 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
111 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
112 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
113 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
114 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
115 };
116
117 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
118
119 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
120 {
121 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
122 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
123 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
124 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
125 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
126 };
127
128 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
129 drm_tv_subconnector_enum_list)
130
131 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = {
132 { DRM_MODE_DIRTY_OFF, "Off" },
133 { DRM_MODE_DIRTY_ON, "On" },
134 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" },
135 };
136
137 DRM_ENUM_NAME_FN(drm_get_dirty_info_name,
138 drm_dirty_info_enum_list)
139
140 struct drm_conn_prop_enum_list {
141 int type;
142 char *name;
143 int count;
144 };
145
146 /*
147 * Connector and encoder types.
148 */
149 static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
150 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
151 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
152 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
153 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
154 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
155 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
156 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
157 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
158 { DRM_MODE_CONNECTOR_Component, "Component", 0 },
159 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 },
160 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 },
161 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 },
162 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 },
163 { DRM_MODE_CONNECTOR_TV, "TV", 0 },
164 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 },
165 };
166
167 static struct drm_prop_enum_list drm_encoder_enum_list[] =
168 { { DRM_MODE_ENCODER_NONE, "None" },
169 { DRM_MODE_ENCODER_DAC, "DAC" },
170 { DRM_MODE_ENCODER_TMDS, "TMDS" },
171 { DRM_MODE_ENCODER_LVDS, "LVDS" },
172 { DRM_MODE_ENCODER_TVDAC, "TV" },
173 };
174
175 char *drm_get_encoder_name(struct drm_encoder *encoder)
176 {
177 static char buf[32];
178
179 snprintf(buf, 32, "%s-%d",
180 drm_encoder_enum_list[encoder->encoder_type].name,
181 encoder->base.id);
182 return buf;
183 }
184 EXPORT_SYMBOL(drm_get_encoder_name);
185
186 char *drm_get_connector_name(struct drm_connector *connector)
187 {
188 static char buf[32];
189
190 snprintf(buf, 32, "%s-%d",
191 drm_connector_enum_list[connector->connector_type].name,
192 connector->connector_type_id);
193 return buf;
194 }
195 EXPORT_SYMBOL(drm_get_connector_name);
196
197 char *drm_get_connector_status_name(enum drm_connector_status status)
198 {
199 if (status == connector_status_connected)
200 return "connected";
201 else if (status == connector_status_disconnected)
202 return "disconnected";
203 else
204 return "unknown";
205 }
206
207 /**
208 * drm_mode_object_get - allocate a new identifier
209 * @dev: DRM device
210 * @ptr: object pointer, used to generate unique ID
211 * @type: object type
212 *
213 * LOCKING:
214 *
215 * Create a unique identifier based on @ptr in @dev's identifier space. Used
216 * for tracking modes, CRTCs and connectors.
217 *
218 * RETURNS:
219 * New unique (relative to other objects in @dev) integer identifier for the
220 * object.
221 */
222 static int drm_mode_object_get(struct drm_device *dev,
223 struct drm_mode_object *obj, uint32_t obj_type)
224 {
225 int new_id = 0;
226 int ret;
227
228 again:
229 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
230 DRM_ERROR("Ran out memory getting a mode number\n");
231 return -EINVAL;
232 }
233
234 mutex_lock(&dev->mode_config.idr_mutex);
235 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
236 mutex_unlock(&dev->mode_config.idr_mutex);
237 if (ret == -EAGAIN)
238 goto again;
239
240 obj->id = new_id;
241 obj->type = obj_type;
242 return 0;
243 }
244
245 /**
246 * drm_mode_object_put - free an identifer
247 * @dev: DRM device
248 * @id: ID to free
249 *
250 * LOCKING:
251 * Caller must hold DRM mode_config lock.
252 *
253 * Free @id from @dev's unique identifier pool.
254 */
255 static void drm_mode_object_put(struct drm_device *dev,
256 struct drm_mode_object *object)
257 {
258 mutex_lock(&dev->mode_config.idr_mutex);
259 idr_remove(&dev->mode_config.crtc_idr, object->id);
260 mutex_unlock(&dev->mode_config.idr_mutex);
261 }
262
263 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
264 uint32_t id, uint32_t type)
265 {
266 struct drm_mode_object *obj = NULL;
267
268 mutex_lock(&dev->mode_config.idr_mutex);
269 obj = idr_find(&dev->mode_config.crtc_idr, id);
270 if (!obj || (obj->type != type) || (obj->id != id))
271 obj = NULL;
272 mutex_unlock(&dev->mode_config.idr_mutex);
273
274 return obj;
275 }
276 EXPORT_SYMBOL(drm_mode_object_find);
277
278 /**
279 * drm_framebuffer_init - initialize a framebuffer
280 * @dev: DRM device
281 *
282 * LOCKING:
283 * Caller must hold mode config lock.
284 *
285 * Allocates an ID for the framebuffer's parent mode object, sets its mode
286 * functions & device file and adds it to the master fd list.
287 *
288 * RETURNS:
289 * Zero on success, error code on failure.
290 */
291 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
292 const struct drm_framebuffer_funcs *funcs)
293 {
294 int ret;
295
296 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
297 if (ret) {
298 return ret;
299 }
300
301 fb->dev = dev;
302 fb->funcs = funcs;
303 dev->mode_config.num_fb++;
304 list_add(&fb->head, &dev->mode_config.fb_list);
305
306 return 0;
307 }
308 EXPORT_SYMBOL(drm_framebuffer_init);
309
310 /**
311 * drm_framebuffer_cleanup - remove a framebuffer object
312 * @fb: framebuffer to remove
313 *
314 * LOCKING:
315 * Caller must hold mode config lock.
316 *
317 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
318 * it, setting it to NULL.
319 */
320 void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
321 {
322 struct drm_device *dev = fb->dev;
323 struct drm_crtc *crtc;
324 struct drm_mode_set set;
325 int ret;
326
327 /* remove from any CRTC */
328 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
329 if (crtc->fb == fb) {
330 /* should turn off the crtc */
331 memset(&set, 0, sizeof(struct drm_mode_set));
332 set.crtc = crtc;
333 set.fb = NULL;
334 ret = crtc->funcs->set_config(&set);
335 if (ret)
336 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc);
337 }
338 }
339
340 drm_mode_object_put(dev, &fb->base);
341 list_del(&fb->head);
342 dev->mode_config.num_fb--;
343 }
344 EXPORT_SYMBOL(drm_framebuffer_cleanup);
345
346 /**
347 * drm_crtc_init - Initialise a new CRTC object
348 * @dev: DRM device
349 * @crtc: CRTC object to init
350 * @funcs: callbacks for the new CRTC
351 *
352 * LOCKING:
353 * Caller must hold mode config lock.
354 *
355 * Inits a new object created as base part of an driver crtc object.
356 */
357 void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
358 const struct drm_crtc_funcs *funcs)
359 {
360 crtc->dev = dev;
361 crtc->funcs = funcs;
362
363 mutex_lock(&dev->mode_config.mutex);
364 drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
365
366 list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
367 dev->mode_config.num_crtc++;
368 mutex_unlock(&dev->mode_config.mutex);
369 }
370 EXPORT_SYMBOL(drm_crtc_init);
371
372 /**
373 * drm_crtc_cleanup - Cleans up the core crtc usage.
374 * @crtc: CRTC to cleanup
375 *
376 * LOCKING:
377 * Caller must hold mode config lock.
378 *
379 * Cleanup @crtc. Removes from drm modesetting space
380 * does NOT free object, caller does that.
381 */
382 void drm_crtc_cleanup(struct drm_crtc *crtc)
383 {
384 struct drm_device *dev = crtc->dev;
385
386 if (crtc->gamma_store) {
387 kfree(crtc->gamma_store);
388 crtc->gamma_store = NULL;
389 }
390
391 drm_mode_object_put(dev, &crtc->base);
392 list_del(&crtc->head);
393 dev->mode_config.num_crtc--;
394 }
395 EXPORT_SYMBOL(drm_crtc_cleanup);
396
397 /**
398 * drm_mode_probed_add - add a mode to a connector's probed mode list
399 * @connector: connector the new mode
400 * @mode: mode data
401 *
402 * LOCKING:
403 * Caller must hold mode config lock.
404 *
405 * Add @mode to @connector's mode list for later use.
406 */
407 void drm_mode_probed_add(struct drm_connector *connector,
408 struct drm_display_mode *mode)
409 {
410 list_add(&mode->head, &connector->probed_modes);
411 }
412 EXPORT_SYMBOL(drm_mode_probed_add);
413
414 /**
415 * drm_mode_remove - remove and free a mode
416 * @connector: connector list to modify
417 * @mode: mode to remove
418 *
419 * LOCKING:
420 * Caller must hold mode config lock.
421 *
422 * Remove @mode from @connector's mode list, then free it.
423 */
424 void drm_mode_remove(struct drm_connector *connector,
425 struct drm_display_mode *mode)
426 {
427 list_del(&mode->head);
428 kfree(mode);
429 }
430 EXPORT_SYMBOL(drm_mode_remove);
431
432 /**
433 * drm_connector_init - Init a preallocated connector
434 * @dev: DRM device
435 * @connector: the connector to init
436 * @funcs: callbacks for this connector
437 * @name: user visible name of the connector
438 *
439 * LOCKING:
440 * Caller must hold @dev's mode_config lock.
441 *
442 * Initialises a preallocated connector. Connectors should be
443 * subclassed as part of driver connector objects.
444 */
445 void drm_connector_init(struct drm_device *dev,
446 struct drm_connector *connector,
447 const struct drm_connector_funcs *funcs,
448 int connector_type)
449 {
450 mutex_lock(&dev->mode_config.mutex);
451
452 connector->dev = dev;
453 connector->funcs = funcs;
454 drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
455 connector->connector_type = connector_type;
456 connector->connector_type_id =
457 ++drm_connector_enum_list[connector_type].count; /* TODO */
458 INIT_LIST_HEAD(&connector->user_modes);
459 INIT_LIST_HEAD(&connector->probed_modes);
460 INIT_LIST_HEAD(&connector->modes);
461 connector->edid_blob_ptr = NULL;
462
463 list_add_tail(&connector->head, &dev->mode_config.connector_list);
464 dev->mode_config.num_connector++;
465
466 drm_connector_attach_property(connector,
467 dev->mode_config.edid_property, 0);
468
469 drm_connector_attach_property(connector,
470 dev->mode_config.dpms_property, 0);
471
472 mutex_unlock(&dev->mode_config.mutex);
473 }
474 EXPORT_SYMBOL(drm_connector_init);
475
476 /**
477 * drm_connector_cleanup - cleans up an initialised connector
478 * @connector: connector to cleanup
479 *
480 * LOCKING:
481 * Caller must hold @dev's mode_config lock.
482 *
483 * Cleans up the connector but doesn't free the object.
484 */
485 void drm_connector_cleanup(struct drm_connector *connector)
486 {
487 struct drm_device *dev = connector->dev;
488 struct drm_display_mode *mode, *t;
489
490 list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
491 drm_mode_remove(connector, mode);
492
493 list_for_each_entry_safe(mode, t, &connector->modes, head)
494 drm_mode_remove(connector, mode);
495
496 list_for_each_entry_safe(mode, t, &connector->user_modes, head)
497 drm_mode_remove(connector, mode);
498
499 mutex_lock(&dev->mode_config.mutex);
500 drm_mode_object_put(dev, &connector->base);
501 list_del(&connector->head);
502 dev->mode_config.num_connector--;
503 mutex_unlock(&dev->mode_config.mutex);
504 }
505 EXPORT_SYMBOL(drm_connector_cleanup);
506
507 void drm_encoder_init(struct drm_device *dev,
508 struct drm_encoder *encoder,
509 const struct drm_encoder_funcs *funcs,
510 int encoder_type)
511 {
512 mutex_lock(&dev->mode_config.mutex);
513
514 encoder->dev = dev;
515
516 drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
517 encoder->encoder_type = encoder_type;
518 encoder->funcs = funcs;
519
520 list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
521 dev->mode_config.num_encoder++;
522
523 mutex_unlock(&dev->mode_config.mutex);
524 }
525 EXPORT_SYMBOL(drm_encoder_init);
526
527 void drm_encoder_cleanup(struct drm_encoder *encoder)
528 {
529 struct drm_device *dev = encoder->dev;
530 mutex_lock(&dev->mode_config.mutex);
531 drm_mode_object_put(dev, &encoder->base);
532 list_del(&encoder->head);
533 dev->mode_config.num_encoder--;
534 mutex_unlock(&dev->mode_config.mutex);
535 }
536 EXPORT_SYMBOL(drm_encoder_cleanup);
537
538 /**
539 * drm_mode_create - create a new display mode
540 * @dev: DRM device
541 *
542 * LOCKING:
543 * Caller must hold DRM mode_config lock.
544 *
545 * Create a new drm_display_mode, give it an ID, and return it.
546 *
547 * RETURNS:
548 * Pointer to new mode on success, NULL on error.
549 */
550 struct drm_display_mode *drm_mode_create(struct drm_device *dev)
551 {
552 struct drm_display_mode *nmode;
553
554 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
555 if (!nmode)
556 return NULL;
557
558 drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
559 return nmode;
560 }
561 EXPORT_SYMBOL(drm_mode_create);
562
563 /**
564 * drm_mode_destroy - remove a mode
565 * @dev: DRM device
566 * @mode: mode to remove
567 *
568 * LOCKING:
569 * Caller must hold mode config lock.
570 *
571 * Free @mode's unique identifier, then free it.
572 */
573 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
574 {
575 drm_mode_object_put(dev, &mode->base);
576
577 kfree(mode);
578 }
579 EXPORT_SYMBOL(drm_mode_destroy);
580
581 static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
582 {
583 struct drm_property *edid;
584 struct drm_property *dpms;
585 int i;
586
587 /*
588 * Standard properties (apply to all connectors)
589 */
590 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
591 DRM_MODE_PROP_IMMUTABLE,
592 "EDID", 0);
593 dev->mode_config.edid_property = edid;
594
595 dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
596 "DPMS", ARRAY_SIZE(drm_dpms_enum_list));
597 for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
598 drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
599 drm_dpms_enum_list[i].name);
600 dev->mode_config.dpms_property = dpms;
601
602 return 0;
603 }
604
605 /**
606 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
607 * @dev: DRM device
608 *
609 * Called by a driver the first time a DVI-I connector is made.
610 */
611 int drm_mode_create_dvi_i_properties(struct drm_device *dev)
612 {
613 struct drm_property *dvi_i_selector;
614 struct drm_property *dvi_i_subconnector;
615 int i;
616
617 if (dev->mode_config.dvi_i_select_subconnector_property)
618 return 0;
619
620 dvi_i_selector =
621 drm_property_create(dev, DRM_MODE_PROP_ENUM,
622 "select subconnector",
623 ARRAY_SIZE(drm_dvi_i_select_enum_list));
624 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
625 drm_property_add_enum(dvi_i_selector, i,
626 drm_dvi_i_select_enum_list[i].type,
627 drm_dvi_i_select_enum_list[i].name);
628 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
629
630 dvi_i_subconnector =
631 drm_property_create(dev, DRM_MODE_PROP_ENUM |
632 DRM_MODE_PROP_IMMUTABLE,
633 "subconnector",
634 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
635 for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
636 drm_property_add_enum(dvi_i_subconnector, i,
637 drm_dvi_i_subconnector_enum_list[i].type,
638 drm_dvi_i_subconnector_enum_list[i].name);
639 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
640
641 return 0;
642 }
643 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
644
645 /**
646 * drm_create_tv_properties - create TV specific connector properties
647 * @dev: DRM device
648 * @num_modes: number of different TV formats (modes) supported
649 * @modes: array of pointers to strings containing name of each format
650 *
651 * Called by a driver's TV initialization routine, this function creates
652 * the TV specific connector properties for a given device. Caller is
653 * responsible for allocating a list of format names and passing them to
654 * this routine.
655 */
656 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
657 char *modes[])
658 {
659 struct drm_property *tv_selector;
660 struct drm_property *tv_subconnector;
661 int i;
662
663 if (dev->mode_config.tv_select_subconnector_property)
664 return 0;
665
666 /*
667 * Basic connector properties
668 */
669 tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
670 "select subconnector",
671 ARRAY_SIZE(drm_tv_select_enum_list));
672 for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
673 drm_property_add_enum(tv_selector, i,
674 drm_tv_select_enum_list[i].type,
675 drm_tv_select_enum_list[i].name);
676 dev->mode_config.tv_select_subconnector_property = tv_selector;
677
678 tv_subconnector =
679 drm_property_create(dev, DRM_MODE_PROP_ENUM |
680 DRM_MODE_PROP_IMMUTABLE, "subconnector",
681 ARRAY_SIZE(drm_tv_subconnector_enum_list));
682 for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
683 drm_property_add_enum(tv_subconnector, i,
684 drm_tv_subconnector_enum_list[i].type,
685 drm_tv_subconnector_enum_list[i].name);
686 dev->mode_config.tv_subconnector_property = tv_subconnector;
687
688 /*
689 * Other, TV specific properties: margins & TV modes.
690 */
691 dev->mode_config.tv_left_margin_property =
692 drm_property_create(dev, DRM_MODE_PROP_RANGE,
693 "left margin", 2);
694 dev->mode_config.tv_left_margin_property->values[0] = 0;
695 dev->mode_config.tv_left_margin_property->values[1] = 100;
696
697 dev->mode_config.tv_right_margin_property =
698 drm_property_create(dev, DRM_MODE_PROP_RANGE,
699 "right margin", 2);
700 dev->mode_config.tv_right_margin_property->values[0] = 0;
701 dev->mode_config.tv_right_margin_property->values[1] = 100;
702
703 dev->mode_config.tv_top_margin_property =
704 drm_property_create(dev, DRM_MODE_PROP_RANGE,
705 "top margin", 2);
706 dev->mode_config.tv_top_margin_property->values[0] = 0;
707 dev->mode_config.tv_top_margin_property->values[1] = 100;
708
709 dev->mode_config.tv_bottom_margin_property =
710 drm_property_create(dev, DRM_MODE_PROP_RANGE,
711 "bottom margin", 2);
712 dev->mode_config.tv_bottom_margin_property->values[0] = 0;
713 dev->mode_config.tv_bottom_margin_property->values[1] = 100;
714
715 dev->mode_config.tv_mode_property =
716 drm_property_create(dev, DRM_MODE_PROP_ENUM,
717 "mode", num_modes);
718 for (i = 0; i < num_modes; i++)
719 drm_property_add_enum(dev->mode_config.tv_mode_property, i,
720 i, modes[i]);
721
722 dev->mode_config.tv_brightness_property =
723 drm_property_create(dev, DRM_MODE_PROP_RANGE,
724 "brightness", 2);
725 dev->mode_config.tv_brightness_property->values[0] = 0;
726 dev->mode_config.tv_brightness_property->values[1] = 100;
727
728 dev->mode_config.tv_contrast_property =
729 drm_property_create(dev, DRM_MODE_PROP_RANGE,
730 "contrast", 2);
731 dev->mode_config.tv_contrast_property->values[0] = 0;
732 dev->mode_config.tv_contrast_property->values[1] = 100;
733
734 dev->mode_config.tv_flicker_reduction_property =
735 drm_property_create(dev, DRM_MODE_PROP_RANGE,
736 "flicker reduction", 2);
737 dev->mode_config.tv_flicker_reduction_property->values[0] = 0;
738 dev->mode_config.tv_flicker_reduction_property->values[1] = 100;
739
740 dev->mode_config.tv_overscan_property =
741 drm_property_create(dev, DRM_MODE_PROP_RANGE,
742 "overscan", 2);
743 dev->mode_config.tv_overscan_property->values[0] = 0;
744 dev->mode_config.tv_overscan_property->values[1] = 100;
745
746 dev->mode_config.tv_saturation_property =
747 drm_property_create(dev, DRM_MODE_PROP_RANGE,
748 "saturation", 2);
749 dev->mode_config.tv_saturation_property->values[0] = 0;
750 dev->mode_config.tv_saturation_property->values[1] = 100;
751
752 dev->mode_config.tv_hue_property =
753 drm_property_create(dev, DRM_MODE_PROP_RANGE,
754 "hue", 2);
755 dev->mode_config.tv_hue_property->values[0] = 0;
756 dev->mode_config.tv_hue_property->values[1] = 100;
757
758 return 0;
759 }
760 EXPORT_SYMBOL(drm_mode_create_tv_properties);
761
762 /**
763 * drm_mode_create_scaling_mode_property - create scaling mode property
764 * @dev: DRM device
765 *
766 * Called by a driver the first time it's needed, must be attached to desired
767 * connectors.
768 */
769 int drm_mode_create_scaling_mode_property(struct drm_device *dev)
770 {
771 struct drm_property *scaling_mode;
772 int i;
773
774 if (dev->mode_config.scaling_mode_property)
775 return 0;
776
777 scaling_mode =
778 drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
779 ARRAY_SIZE(drm_scaling_mode_enum_list));
780 for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
781 drm_property_add_enum(scaling_mode, i,
782 drm_scaling_mode_enum_list[i].type,
783 drm_scaling_mode_enum_list[i].name);
784
785 dev->mode_config.scaling_mode_property = scaling_mode;
786
787 return 0;
788 }
789 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
790
791 /**
792 * drm_mode_create_dithering_property - create dithering property
793 * @dev: DRM device
794 *
795 * Called by a driver the first time it's needed, must be attached to desired
796 * connectors.
797 */
798 int drm_mode_create_dithering_property(struct drm_device *dev)
799 {
800 struct drm_property *dithering_mode;
801 int i;
802
803 if (dev->mode_config.dithering_mode_property)
804 return 0;
805
806 dithering_mode =
807 drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
808 ARRAY_SIZE(drm_dithering_mode_enum_list));
809 for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
810 drm_property_add_enum(dithering_mode, i,
811 drm_dithering_mode_enum_list[i].type,
812 drm_dithering_mode_enum_list[i].name);
813 dev->mode_config.dithering_mode_property = dithering_mode;
814
815 return 0;
816 }
817 EXPORT_SYMBOL(drm_mode_create_dithering_property);
818
819 /**
820 * drm_mode_create_dirty_property - create dirty property
821 * @dev: DRM device
822 *
823 * Called by a driver the first time it's needed, must be attached to desired
824 * connectors.
825 */
826 int drm_mode_create_dirty_info_property(struct drm_device *dev)
827 {
828 struct drm_property *dirty_info;
829 int i;
830
831 if (dev->mode_config.dirty_info_property)
832 return 0;
833
834 dirty_info =
835 drm_property_create(dev, DRM_MODE_PROP_ENUM |
836 DRM_MODE_PROP_IMMUTABLE,
837 "dirty",
838 ARRAY_SIZE(drm_dirty_info_enum_list));
839 for (i = 0; i < ARRAY_SIZE(drm_dirty_info_enum_list); i++)
840 drm_property_add_enum(dirty_info, i,
841 drm_dirty_info_enum_list[i].type,
842 drm_dirty_info_enum_list[i].name);
843 dev->mode_config.dirty_info_property = dirty_info;
844
845 return 0;
846 }
847 EXPORT_SYMBOL(drm_mode_create_dirty_info_property);
848
849 /**
850 * drm_mode_config_init - initialize DRM mode_configuration structure
851 * @dev: DRM device
852 *
853 * LOCKING:
854 * None, should happen single threaded at init time.
855 *
856 * Initialize @dev's mode_config structure, used for tracking the graphics
857 * configuration of @dev.
858 */
859 void drm_mode_config_init(struct drm_device *dev)
860 {
861 mutex_init(&dev->mode_config.mutex);
862 mutex_init(&dev->mode_config.idr_mutex);
863 INIT_LIST_HEAD(&dev->mode_config.fb_list);
864 INIT_LIST_HEAD(&dev->mode_config.crtc_list);
865 INIT_LIST_HEAD(&dev->mode_config.connector_list);
866 INIT_LIST_HEAD(&dev->mode_config.encoder_list);
867 INIT_LIST_HEAD(&dev->mode_config.property_list);
868 INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
869 idr_init(&dev->mode_config.crtc_idr);
870
871 mutex_lock(&dev->mode_config.mutex);
872 drm_mode_create_standard_connector_properties(dev);
873 mutex_unlock(&dev->mode_config.mutex);
874
875 /* Just to be sure */
876 dev->mode_config.num_fb = 0;
877 dev->mode_config.num_connector = 0;
878 dev->mode_config.num_crtc = 0;
879 dev->mode_config.num_encoder = 0;
880 }
881 EXPORT_SYMBOL(drm_mode_config_init);
882
883 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
884 {
885 uint32_t total_objects = 0;
886
887 total_objects += dev->mode_config.num_crtc;
888 total_objects += dev->mode_config.num_connector;
889 total_objects += dev->mode_config.num_encoder;
890
891 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
892 if (!group->id_list)
893 return -ENOMEM;
894
895 group->num_crtcs = 0;
896 group->num_connectors = 0;
897 group->num_encoders = 0;
898 return 0;
899 }
900
901 int drm_mode_group_init_legacy_group(struct drm_device *dev,
902 struct drm_mode_group *group)
903 {
904 struct drm_crtc *crtc;
905 struct drm_encoder *encoder;
906 struct drm_connector *connector;
907 int ret;
908
909 if ((ret = drm_mode_group_init(dev, group)))
910 return ret;
911
912 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
913 group->id_list[group->num_crtcs++] = crtc->base.id;
914
915 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
916 group->id_list[group->num_crtcs + group->num_encoders++] =
917 encoder->base.id;
918
919 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
920 group->id_list[group->num_crtcs + group->num_encoders +
921 group->num_connectors++] = connector->base.id;
922
923 return 0;
924 }
925
926 /**
927 * drm_mode_config_cleanup - free up DRM mode_config info
928 * @dev: DRM device
929 *
930 * LOCKING:
931 * Caller must hold mode config lock.
932 *
933 * Free up all the connectors and CRTCs associated with this DRM device, then
934 * free up the framebuffers and associated buffer objects.
935 *
936 * FIXME: cleanup any dangling user buffer objects too
937 */
938 void drm_mode_config_cleanup(struct drm_device *dev)
939 {
940 struct drm_connector *connector, *ot;
941 struct drm_crtc *crtc, *ct;
942 struct drm_encoder *encoder, *enct;
943 struct drm_framebuffer *fb, *fbt;
944 struct drm_property *property, *pt;
945
946 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
947 head) {
948 encoder->funcs->destroy(encoder);
949 }
950
951 list_for_each_entry_safe(connector, ot,
952 &dev->mode_config.connector_list, head) {
953 connector->funcs->destroy(connector);
954 }
955
956 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
957 head) {
958 drm_property_destroy(dev, property);
959 }
960
961 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
962 fb->funcs->destroy(fb);
963 }
964
965 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
966 crtc->funcs->destroy(crtc);
967 }
968
969 }
970 EXPORT_SYMBOL(drm_mode_config_cleanup);
971
972 /**
973 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
974 * @out: drm_mode_modeinfo struct to return to the user
975 * @in: drm_display_mode to use
976 *
977 * LOCKING:
978 * None.
979 *
980 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
981 * the user.
982 */
983 void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
984 struct drm_display_mode *in)
985 {
986 out->clock = in->clock;
987 out->hdisplay = in->hdisplay;
988 out->hsync_start = in->hsync_start;
989 out->hsync_end = in->hsync_end;
990 out->htotal = in->htotal;
991 out->hskew = in->hskew;
992 out->vdisplay = in->vdisplay;
993 out->vsync_start = in->vsync_start;
994 out->vsync_end = in->vsync_end;
995 out->vtotal = in->vtotal;
996 out->vscan = in->vscan;
997 out->vrefresh = in->vrefresh;
998 out->flags = in->flags;
999 out->type = in->type;
1000 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1001 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1002 }
1003
1004 /**
1005 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
1006 * @out: drm_display_mode to return to the user
1007 * @in: drm_mode_modeinfo to use
1008 *
1009 * LOCKING:
1010 * None.
1011 *
1012 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
1013 * the caller.
1014 */
1015 void drm_crtc_convert_umode(struct drm_display_mode *out,
1016 struct drm_mode_modeinfo *in)
1017 {
1018 out->clock = in->clock;
1019 out->hdisplay = in->hdisplay;
1020 out->hsync_start = in->hsync_start;
1021 out->hsync_end = in->hsync_end;
1022 out->htotal = in->htotal;
1023 out->hskew = in->hskew;
1024 out->vdisplay = in->vdisplay;
1025 out->vsync_start = in->vsync_start;
1026 out->vsync_end = in->vsync_end;
1027 out->vtotal = in->vtotal;
1028 out->vscan = in->vscan;
1029 out->vrefresh = in->vrefresh;
1030 out->flags = in->flags;
1031 out->type = in->type;
1032 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
1033 out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
1034 }
1035
1036 /**
1037 * drm_mode_getresources - get graphics configuration
1038 * @inode: inode from the ioctl
1039 * @filp: file * from the ioctl
1040 * @cmd: cmd from ioctl
1041 * @arg: arg from ioctl
1042 *
1043 * LOCKING:
1044 * Takes mode config lock.
1045 *
1046 * Construct a set of configuration description structures and return
1047 * them to the user, including CRTC, connector and framebuffer configuration.
1048 *
1049 * Called by the user via ioctl.
1050 *
1051 * RETURNS:
1052 * Zero on success, errno on failure.
1053 */
1054 int drm_mode_getresources(struct drm_device *dev, void *data,
1055 struct drm_file *file_priv)
1056 {
1057 struct drm_mode_card_res *card_res = data;
1058 struct list_head *lh;
1059 struct drm_framebuffer *fb;
1060 struct drm_connector *connector;
1061 struct drm_crtc *crtc;
1062 struct drm_encoder *encoder;
1063 int ret = 0;
1064 int connector_count = 0;
1065 int crtc_count = 0;
1066 int fb_count = 0;
1067 int encoder_count = 0;
1068 int copied = 0, i;
1069 uint32_t __user *fb_id;
1070 uint32_t __user *crtc_id;
1071 uint32_t __user *connector_id;
1072 uint32_t __user *encoder_id;
1073 struct drm_mode_group *mode_group;
1074
1075 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1076 return -EINVAL;
1077
1078 mutex_lock(&dev->mode_config.mutex);
1079
1080 /*
1081 * For the non-control nodes we need to limit the list of resources
1082 * by IDs in the group list for this node
1083 */
1084 list_for_each(lh, &file_priv->fbs)
1085 fb_count++;
1086
1087 mode_group = &file_priv->master->minor->mode_group;
1088 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1089
1090 list_for_each(lh, &dev->mode_config.crtc_list)
1091 crtc_count++;
1092
1093 list_for_each(lh, &dev->mode_config.connector_list)
1094 connector_count++;
1095
1096 list_for_each(lh, &dev->mode_config.encoder_list)
1097 encoder_count++;
1098 } else {
1099
1100 crtc_count = mode_group->num_crtcs;
1101 connector_count = mode_group->num_connectors;
1102 encoder_count = mode_group->num_encoders;
1103 }
1104
1105 card_res->max_height = dev->mode_config.max_height;
1106 card_res->min_height = dev->mode_config.min_height;
1107 card_res->max_width = dev->mode_config.max_width;
1108 card_res->min_width = dev->mode_config.min_width;
1109
1110 /* handle this in 4 parts */
1111 /* FBs */
1112 if (card_res->count_fbs >= fb_count) {
1113 copied = 0;
1114 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
1115 list_for_each_entry(fb, &file_priv->fbs, filp_head) {
1116 if (put_user(fb->base.id, fb_id + copied)) {
1117 ret = -EFAULT;
1118 goto out;
1119 }
1120 copied++;
1121 }
1122 }
1123 card_res->count_fbs = fb_count;
1124
1125 /* CRTCs */
1126 if (card_res->count_crtcs >= crtc_count) {
1127 copied = 0;
1128 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
1129 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1130 list_for_each_entry(crtc, &dev->mode_config.crtc_list,
1131 head) {
1132 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1133 if (put_user(crtc->base.id, crtc_id + copied)) {
1134 ret = -EFAULT;
1135 goto out;
1136 }
1137 copied++;
1138 }
1139 } else {
1140 for (i = 0; i < mode_group->num_crtcs; i++) {
1141 if (put_user(mode_group->id_list[i],
1142 crtc_id + copied)) {
1143 ret = -EFAULT;
1144 goto out;
1145 }
1146 copied++;
1147 }
1148 }
1149 }
1150 card_res->count_crtcs = crtc_count;
1151
1152 /* Encoders */
1153 if (card_res->count_encoders >= encoder_count) {
1154 copied = 0;
1155 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
1156 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1157 list_for_each_entry(encoder,
1158 &dev->mode_config.encoder_list,
1159 head) {
1160 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id,
1161 drm_get_encoder_name(encoder));
1162 if (put_user(encoder->base.id, encoder_id +
1163 copied)) {
1164 ret = -EFAULT;
1165 goto out;
1166 }
1167 copied++;
1168 }
1169 } else {
1170 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
1171 if (put_user(mode_group->id_list[i],
1172 encoder_id + copied)) {
1173 ret = -EFAULT;
1174 goto out;
1175 }
1176 copied++;
1177 }
1178
1179 }
1180 }
1181 card_res->count_encoders = encoder_count;
1182
1183 /* Connectors */
1184 if (card_res->count_connectors >= connector_count) {
1185 copied = 0;
1186 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
1187 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
1188 list_for_each_entry(connector,
1189 &dev->mode_config.connector_list,
1190 head) {
1191 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1192 connector->base.id,
1193 drm_get_connector_name(connector));
1194 if (put_user(connector->base.id,
1195 connector_id + copied)) {
1196 ret = -EFAULT;
1197 goto out;
1198 }
1199 copied++;
1200 }
1201 } else {
1202 int start = mode_group->num_crtcs +
1203 mode_group->num_encoders;
1204 for (i = start; i < start + mode_group->num_connectors; i++) {
1205 if (put_user(mode_group->id_list[i],
1206 connector_id + copied)) {
1207 ret = -EFAULT;
1208 goto out;
1209 }
1210 copied++;
1211 }
1212 }
1213 }
1214 card_res->count_connectors = connector_count;
1215
1216 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs,
1217 card_res->count_connectors, card_res->count_encoders);
1218
1219 out:
1220 mutex_unlock(&dev->mode_config.mutex);
1221 return ret;
1222 }
1223
1224 /**
1225 * drm_mode_getcrtc - get CRTC configuration
1226 * @inode: inode from the ioctl
1227 * @filp: file * from the ioctl
1228 * @cmd: cmd from ioctl
1229 * @arg: arg from ioctl
1230 *
1231 * LOCKING:
1232 * Caller? (FIXME)
1233 *
1234 * Construct a CRTC configuration structure to return to the user.
1235 *
1236 * Called by the user via ioctl.
1237 *
1238 * RETURNS:
1239 * Zero on success, errno on failure.
1240 */
1241 int drm_mode_getcrtc(struct drm_device *dev,
1242 void *data, struct drm_file *file_priv)
1243 {
1244 struct drm_mode_crtc *crtc_resp = data;
1245 struct drm_crtc *crtc;
1246 struct drm_mode_object *obj;
1247 int ret = 0;
1248
1249 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1250 return -EINVAL;
1251
1252 mutex_lock(&dev->mode_config.mutex);
1253
1254 obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
1255 DRM_MODE_OBJECT_CRTC);
1256 if (!obj) {
1257 ret = -EINVAL;
1258 goto out;
1259 }
1260 crtc = obj_to_crtc(obj);
1261
1262 crtc_resp->x = crtc->x;
1263 crtc_resp->y = crtc->y;
1264 crtc_resp->gamma_size = crtc->gamma_size;
1265 if (crtc->fb)
1266 crtc_resp->fb_id = crtc->fb->base.id;
1267 else
1268 crtc_resp->fb_id = 0;
1269
1270 if (crtc->enabled) {
1271
1272 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
1273 crtc_resp->mode_valid = 1;
1274
1275 } else {
1276 crtc_resp->mode_valid = 0;
1277 }
1278
1279 out:
1280 mutex_unlock(&dev->mode_config.mutex);
1281 return ret;
1282 }
1283
1284 /**
1285 * drm_mode_getconnector - get connector configuration
1286 * @inode: inode from the ioctl
1287 * @filp: file * from the ioctl
1288 * @cmd: cmd from ioctl
1289 * @arg: arg from ioctl
1290 *
1291 * LOCKING:
1292 * Caller? (FIXME)
1293 *
1294 * Construct a connector configuration structure to return to the user.
1295 *
1296 * Called by the user via ioctl.
1297 *
1298 * RETURNS:
1299 * Zero on success, errno on failure.
1300 */
1301 int drm_mode_getconnector(struct drm_device *dev, void *data,
1302 struct drm_file *file_priv)
1303 {
1304 struct drm_mode_get_connector *out_resp = data;
1305 struct drm_mode_object *obj;
1306 struct drm_connector *connector;
1307 struct drm_display_mode *mode;
1308 int mode_count = 0;
1309 int props_count = 0;
1310 int encoders_count = 0;
1311 int ret = 0;
1312 int copied = 0;
1313 int i;
1314 struct drm_mode_modeinfo u_mode;
1315 struct drm_mode_modeinfo __user *mode_ptr;
1316 uint32_t __user *prop_ptr;
1317 uint64_t __user *prop_values;
1318 uint32_t __user *encoder_ptr;
1319
1320 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1321 return -EINVAL;
1322
1323 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
1324
1325 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id);
1326
1327 mutex_lock(&dev->mode_config.mutex);
1328
1329 obj = drm_mode_object_find(dev, out_resp->connector_id,
1330 DRM_MODE_OBJECT_CONNECTOR);
1331 if (!obj) {
1332 ret = -EINVAL;
1333 goto out;
1334 }
1335 connector = obj_to_connector(obj);
1336
1337 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1338 if (connector->property_ids[i] != 0) {
1339 props_count++;
1340 }
1341 }
1342
1343 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1344 if (connector->encoder_ids[i] != 0) {
1345 encoders_count++;
1346 }
1347 }
1348
1349 if (out_resp->count_modes == 0) {
1350 connector->funcs->fill_modes(connector,
1351 dev->mode_config.max_width,
1352 dev->mode_config.max_height);
1353 }
1354
1355 /* delayed so we get modes regardless of pre-fill_modes state */
1356 list_for_each_entry(mode, &connector->modes, head)
1357 mode_count++;
1358
1359 out_resp->connector_id = connector->base.id;
1360 out_resp->connector_type = connector->connector_type;
1361 out_resp->connector_type_id = connector->connector_type_id;
1362 out_resp->mm_width = connector->display_info.width_mm;
1363 out_resp->mm_height = connector->display_info.height_mm;
1364 out_resp->subpixel = connector->display_info.subpixel_order;
1365 out_resp->connection = connector->status;
1366 if (connector->encoder)
1367 out_resp->encoder_id = connector->encoder->base.id;
1368 else
1369 out_resp->encoder_id = 0;
1370
1371 /*
1372 * This ioctl is called twice, once to determine how much space is
1373 * needed, and the 2nd time to fill it.
1374 */
1375 if ((out_resp->count_modes >= mode_count) && mode_count) {
1376 copied = 0;
1377 mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
1378 list_for_each_entry(mode, &connector->modes, head) {
1379 drm_crtc_convert_to_umode(&u_mode, mode);
1380 if (copy_to_user(mode_ptr + copied,
1381 &u_mode, sizeof(u_mode))) {
1382 ret = -EFAULT;
1383 goto out;
1384 }
1385 copied++;
1386 }
1387 }
1388 out_resp->count_modes = mode_count;
1389
1390 if ((out_resp->count_props >= props_count) && props_count) {
1391 copied = 0;
1392 prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
1393 prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
1394 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
1395 if (connector->property_ids[i] != 0) {
1396 if (put_user(connector->property_ids[i],
1397 prop_ptr + copied)) {
1398 ret = -EFAULT;
1399 goto out;
1400 }
1401
1402 if (put_user(connector->property_values[i],
1403 prop_values + copied)) {
1404 ret = -EFAULT;
1405 goto out;
1406 }
1407 copied++;
1408 }
1409 }
1410 }
1411 out_resp->count_props = props_count;
1412
1413 if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
1414 copied = 0;
1415 encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
1416 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
1417 if (connector->encoder_ids[i] != 0) {
1418 if (put_user(connector->encoder_ids[i],
1419 encoder_ptr + copied)) {
1420 ret = -EFAULT;
1421 goto out;
1422 }
1423 copied++;
1424 }
1425 }
1426 }
1427 out_resp->count_encoders = encoders_count;
1428
1429 out:
1430 mutex_unlock(&dev->mode_config.mutex);
1431 return ret;
1432 }
1433
1434 int drm_mode_getencoder(struct drm_device *dev, void *data,
1435 struct drm_file *file_priv)
1436 {
1437 struct drm_mode_get_encoder *enc_resp = data;
1438 struct drm_mode_object *obj;
1439 struct drm_encoder *encoder;
1440 int ret = 0;
1441
1442 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1443 return -EINVAL;
1444
1445 mutex_lock(&dev->mode_config.mutex);
1446 obj = drm_mode_object_find(dev, enc_resp->encoder_id,
1447 DRM_MODE_OBJECT_ENCODER);
1448 if (!obj) {
1449 ret = -EINVAL;
1450 goto out;
1451 }
1452 encoder = obj_to_encoder(obj);
1453
1454 if (encoder->crtc)
1455 enc_resp->crtc_id = encoder->crtc->base.id;
1456 else
1457 enc_resp->crtc_id = 0;
1458 enc_resp->encoder_type = encoder->encoder_type;
1459 enc_resp->encoder_id = encoder->base.id;
1460 enc_resp->possible_crtcs = encoder->possible_crtcs;
1461 enc_resp->possible_clones = encoder->possible_clones;
1462
1463 out:
1464 mutex_unlock(&dev->mode_config.mutex);
1465 return ret;
1466 }
1467
1468 /**
1469 * drm_mode_setcrtc - set CRTC configuration
1470 * @inode: inode from the ioctl
1471 * @filp: file * from the ioctl
1472 * @cmd: cmd from ioctl
1473 * @arg: arg from ioctl
1474 *
1475 * LOCKING:
1476 * Caller? (FIXME)
1477 *
1478 * Build a new CRTC configuration based on user request.
1479 *
1480 * Called by the user via ioctl.
1481 *
1482 * RETURNS:
1483 * Zero on success, errno on failure.
1484 */
1485 int drm_mode_setcrtc(struct drm_device *dev, void *data,
1486 struct drm_file *file_priv)
1487 {
1488 struct drm_mode_config *config = &dev->mode_config;
1489 struct drm_mode_crtc *crtc_req = data;
1490 struct drm_mode_object *obj;
1491 struct drm_crtc *crtc, *crtcfb;
1492 struct drm_connector **connector_set = NULL, *connector;
1493 struct drm_framebuffer *fb = NULL;
1494 struct drm_display_mode *mode = NULL;
1495 struct drm_mode_set set;
1496 uint32_t __user *set_connectors_ptr;
1497 int ret = 0;
1498 int i;
1499
1500 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1501 return -EINVAL;
1502
1503 mutex_lock(&dev->mode_config.mutex);
1504 obj = drm_mode_object_find(dev, crtc_req->crtc_id,
1505 DRM_MODE_OBJECT_CRTC);
1506 if (!obj) {
1507 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
1508 ret = -EINVAL;
1509 goto out;
1510 }
1511 crtc = obj_to_crtc(obj);
1512 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
1513
1514 if (crtc_req->mode_valid) {
1515 /* If we have a mode we need a framebuffer. */
1516 /* If we pass -1, set the mode with the currently bound fb */
1517 if (crtc_req->fb_id == -1) {
1518 list_for_each_entry(crtcfb,
1519 &dev->mode_config.crtc_list, head) {
1520 if (crtcfb == crtc) {
1521 DRM_DEBUG_KMS("Using current fb for "
1522 "setmode\n");
1523 fb = crtc->fb;
1524 }
1525 }
1526 } else {
1527 obj = drm_mode_object_find(dev, crtc_req->fb_id,
1528 DRM_MODE_OBJECT_FB);
1529 if (!obj) {
1530 DRM_DEBUG_KMS("Unknown FB ID%d\n",
1531 crtc_req->fb_id);
1532 ret = -EINVAL;
1533 goto out;
1534 }
1535 fb = obj_to_fb(obj);
1536 }
1537
1538 mode = drm_mode_create(dev);
1539 drm_crtc_convert_umode(mode, &crtc_req->mode);
1540 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1541 }
1542
1543 if (crtc_req->count_connectors == 0 && mode) {
1544 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
1545 ret = -EINVAL;
1546 goto out;
1547 }
1548
1549 if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
1550 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
1551 crtc_req->count_connectors);
1552 ret = -EINVAL;
1553 goto out;
1554 }
1555
1556 if (crtc_req->count_connectors > 0) {
1557 u32 out_id;
1558
1559 /* Avoid unbounded kernel memory allocation */
1560 if (crtc_req->count_connectors > config->num_connector) {
1561 ret = -EINVAL;
1562 goto out;
1563 }
1564
1565 connector_set = kmalloc(crtc_req->count_connectors *
1566 sizeof(struct drm_connector *),
1567 GFP_KERNEL);
1568 if (!connector_set) {
1569 ret = -ENOMEM;
1570 goto out;
1571 }
1572
1573 for (i = 0; i < crtc_req->count_connectors; i++) {
1574 set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
1575 if (get_user(out_id, &set_connectors_ptr[i])) {
1576 ret = -EFAULT;
1577 goto out;
1578 }
1579
1580 obj = drm_mode_object_find(dev, out_id,
1581 DRM_MODE_OBJECT_CONNECTOR);
1582 if (!obj) {
1583 DRM_DEBUG_KMS("Connector id %d unknown\n",
1584 out_id);
1585 ret = -EINVAL;
1586 goto out;
1587 }
1588 connector = obj_to_connector(obj);
1589 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
1590 connector->base.id,
1591 drm_get_connector_name(connector));
1592
1593 connector_set[i] = connector;
1594 }
1595 }
1596
1597 set.crtc = crtc;
1598 set.x = crtc_req->x;
1599 set.y = crtc_req->y;
1600 set.mode = mode;
1601 set.connectors = connector_set;
1602 set.num_connectors = crtc_req->count_connectors;
1603 set.fb = fb;
1604 ret = crtc->funcs->set_config(&set);
1605
1606 out:
1607 kfree(connector_set);
1608 mutex_unlock(&dev->mode_config.mutex);
1609 return ret;
1610 }
1611
1612 int drm_mode_cursor_ioctl(struct drm_device *dev,
1613 void *data, struct drm_file *file_priv)
1614 {
1615 struct drm_mode_cursor *req = data;
1616 struct drm_mode_object *obj;
1617 struct drm_crtc *crtc;
1618 int ret = 0;
1619
1620 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1621 return -EINVAL;
1622
1623 if (!req->flags) {
1624 DRM_ERROR("no operation set\n");
1625 return -EINVAL;
1626 }
1627
1628 mutex_lock(&dev->mode_config.mutex);
1629 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
1630 if (!obj) {
1631 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1632 ret = -EINVAL;
1633 goto out;
1634 }
1635 crtc = obj_to_crtc(obj);
1636
1637 if (req->flags & DRM_MODE_CURSOR_BO) {
1638 if (!crtc->funcs->cursor_set) {
1639 DRM_ERROR("crtc does not support cursor\n");
1640 ret = -ENXIO;
1641 goto out;
1642 }
1643 /* Turns off the cursor if handle is 0 */
1644 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1645 req->width, req->height);
1646 }
1647
1648 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1649 if (crtc->funcs->cursor_move) {
1650 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1651 } else {
1652 DRM_ERROR("crtc does not support cursor\n");
1653 ret = -EFAULT;
1654 goto out;
1655 }
1656 }
1657 out:
1658 mutex_unlock(&dev->mode_config.mutex);
1659 return ret;
1660 }
1661
1662 /**
1663 * drm_mode_addfb - add an FB to the graphics configuration
1664 * @inode: inode from the ioctl
1665 * @filp: file * from the ioctl
1666 * @cmd: cmd from ioctl
1667 * @arg: arg from ioctl
1668 *
1669 * LOCKING:
1670 * Takes mode config lock.
1671 *
1672 * Add a new FB to the specified CRTC, given a user request.
1673 *
1674 * Called by the user via ioctl.
1675 *
1676 * RETURNS:
1677 * Zero on success, errno on failure.
1678 */
1679 int drm_mode_addfb(struct drm_device *dev,
1680 void *data, struct drm_file *file_priv)
1681 {
1682 struct drm_mode_fb_cmd *r = data;
1683 struct drm_mode_config *config = &dev->mode_config;
1684 struct drm_framebuffer *fb;
1685 int ret = 0;
1686
1687 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1688 return -EINVAL;
1689
1690 if ((config->min_width > r->width) || (r->width > config->max_width)) {
1691 DRM_ERROR("mode new framebuffer width not within limits\n");
1692 return -EINVAL;
1693 }
1694 if ((config->min_height > r->height) || (r->height > config->max_height)) {
1695 DRM_ERROR("mode new framebuffer height not within limits\n");
1696 return -EINVAL;
1697 }
1698
1699 mutex_lock(&dev->mode_config.mutex);
1700
1701 /* TODO check buffer is sufficiently large */
1702 /* TODO setup destructor callback */
1703
1704 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
1705 if (IS_ERR(fb)) {
1706 DRM_ERROR("could not create framebuffer\n");
1707 ret = PTR_ERR(fb);
1708 goto out;
1709 }
1710
1711 r->fb_id = fb->base.id;
1712 list_add(&fb->filp_head, &file_priv->fbs);
1713 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
1714
1715 out:
1716 mutex_unlock(&dev->mode_config.mutex);
1717 return ret;
1718 }
1719
1720 /**
1721 * drm_mode_rmfb - remove an FB from the configuration
1722 * @inode: inode from the ioctl
1723 * @filp: file * from the ioctl
1724 * @cmd: cmd from ioctl
1725 * @arg: arg from ioctl
1726 *
1727 * LOCKING:
1728 * Takes mode config lock.
1729 *
1730 * Remove the FB specified by the user.
1731 *
1732 * Called by the user via ioctl.
1733 *
1734 * RETURNS:
1735 * Zero on success, errno on failure.
1736 */
1737 int drm_mode_rmfb(struct drm_device *dev,
1738 void *data, struct drm_file *file_priv)
1739 {
1740 struct drm_mode_object *obj;
1741 struct drm_framebuffer *fb = NULL;
1742 struct drm_framebuffer *fbl = NULL;
1743 uint32_t *id = data;
1744 int ret = 0;
1745 int found = 0;
1746
1747 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1748 return -EINVAL;
1749
1750 mutex_lock(&dev->mode_config.mutex);
1751 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
1752 /* TODO check that we really get a framebuffer back. */
1753 if (!obj) {
1754 DRM_ERROR("mode invalid framebuffer id\n");
1755 ret = -EINVAL;
1756 goto out;
1757 }
1758 fb = obj_to_fb(obj);
1759
1760 list_for_each_entry(fbl, &file_priv->fbs, filp_head)
1761 if (fb == fbl)
1762 found = 1;
1763
1764 if (!found) {
1765 DRM_ERROR("tried to remove a fb that we didn't own\n");
1766 ret = -EINVAL;
1767 goto out;
1768 }
1769
1770 /* TODO release all crtc connected to the framebuffer */
1771 /* TODO unhock the destructor from the buffer object */
1772
1773 list_del(&fb->filp_head);
1774 fb->funcs->destroy(fb);
1775
1776 out:
1777 mutex_unlock(&dev->mode_config.mutex);
1778 return ret;
1779 }
1780
1781 /**
1782 * drm_mode_getfb - get FB info
1783 * @inode: inode from the ioctl
1784 * @filp: file * from the ioctl
1785 * @cmd: cmd from ioctl
1786 * @arg: arg from ioctl
1787 *
1788 * LOCKING:
1789 * Caller? (FIXME)
1790 *
1791 * Lookup the FB given its ID and return info about it.
1792 *
1793 * Called by the user via ioctl.
1794 *
1795 * RETURNS:
1796 * Zero on success, errno on failure.
1797 */
1798 int drm_mode_getfb(struct drm_device *dev,
1799 void *data, struct drm_file *file_priv)
1800 {
1801 struct drm_mode_fb_cmd *r = data;
1802 struct drm_mode_object *obj;
1803 struct drm_framebuffer *fb;
1804 int ret = 0;
1805
1806 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1807 return -EINVAL;
1808
1809 mutex_lock(&dev->mode_config.mutex);
1810 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1811 if (!obj) {
1812 DRM_ERROR("invalid framebuffer id\n");
1813 ret = -EINVAL;
1814 goto out;
1815 }
1816 fb = obj_to_fb(obj);
1817
1818 r->height = fb->height;
1819 r->width = fb->width;
1820 r->depth = fb->depth;
1821 r->bpp = fb->bits_per_pixel;
1822 r->pitch = fb->pitch;
1823 fb->funcs->create_handle(fb, file_priv, &r->handle);
1824
1825 out:
1826 mutex_unlock(&dev->mode_config.mutex);
1827 return ret;
1828 }
1829
1830 int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1831 void *data, struct drm_file *file_priv)
1832 {
1833 struct drm_clip_rect __user *clips_ptr;
1834 struct drm_clip_rect *clips = NULL;
1835 struct drm_mode_fb_dirty_cmd *r = data;
1836 struct drm_mode_object *obj;
1837 struct drm_framebuffer *fb;
1838 unsigned flags;
1839 int num_clips;
1840 int ret = 0;
1841
1842 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1843 return -EINVAL;
1844
1845 mutex_lock(&dev->mode_config.mutex);
1846 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
1847 if (!obj) {
1848 DRM_ERROR("invalid framebuffer id\n");
1849 ret = -EINVAL;
1850 goto out_err1;
1851 }
1852 fb = obj_to_fb(obj);
1853
1854 num_clips = r->num_clips;
1855 clips_ptr = (struct drm_clip_rect *)(unsigned long)r->clips_ptr;
1856
1857 if (!num_clips != !clips_ptr) {
1858 ret = -EINVAL;
1859 goto out_err1;
1860 }
1861
1862 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags;
1863
1864 /* If userspace annotates copy, clips must come in pairs */
1865 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) {
1866 ret = -EINVAL;
1867 goto out_err1;
1868 }
1869
1870 if (num_clips && clips_ptr) {
1871 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) {
1872 ret = -EINVAL;
1873 goto out_err1;
1874 }
1875 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
1876 if (!clips) {
1877 ret = -ENOMEM;
1878 goto out_err1;
1879 }
1880
1881 ret = copy_from_user(clips, clips_ptr,
1882 num_clips * sizeof(*clips));
1883 if (ret) {
1884 ret = -EFAULT;
1885 goto out_err2;
1886 }
1887 }
1888
1889 if (fb->funcs->dirty) {
1890 ret = fb->funcs->dirty(fb, file_priv, flags, r->color,
1891 clips, num_clips);
1892 } else {
1893 ret = -ENOSYS;
1894 goto out_err2;
1895 }
1896
1897 out_err2:
1898 kfree(clips);
1899 out_err1:
1900 mutex_unlock(&dev->mode_config.mutex);
1901 return ret;
1902 }
1903
1904
1905 /**
1906 * drm_fb_release - remove and free the FBs on this file
1907 * @filp: file * from the ioctl
1908 *
1909 * LOCKING:
1910 * Takes mode config lock.
1911 *
1912 * Destroy all the FBs associated with @filp.
1913 *
1914 * Called by the user via ioctl.
1915 *
1916 * RETURNS:
1917 * Zero on success, errno on failure.
1918 */
1919 void drm_fb_release(struct drm_file *priv)
1920 {
1921 struct drm_device *dev = priv->minor->dev;
1922 struct drm_framebuffer *fb, *tfb;
1923
1924 mutex_lock(&dev->mode_config.mutex);
1925 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
1926 list_del(&fb->filp_head);
1927 fb->funcs->destroy(fb);
1928 }
1929 mutex_unlock(&dev->mode_config.mutex);
1930 }
1931
1932 /**
1933 * drm_mode_attachmode - add a mode to the user mode list
1934 * @dev: DRM device
1935 * @connector: connector to add the mode to
1936 * @mode: mode to add
1937 *
1938 * Add @mode to @connector's user mode list.
1939 */
1940 static int drm_mode_attachmode(struct drm_device *dev,
1941 struct drm_connector *connector,
1942 struct drm_display_mode *mode)
1943 {
1944 int ret = 0;
1945
1946 list_add_tail(&mode->head, &connector->user_modes);
1947 return ret;
1948 }
1949
1950 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
1951 struct drm_display_mode *mode)
1952 {
1953 struct drm_connector *connector;
1954 int ret = 0;
1955 struct drm_display_mode *dup_mode;
1956 int need_dup = 0;
1957 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1958 if (!connector->encoder)
1959 break;
1960 if (connector->encoder->crtc == crtc) {
1961 if (need_dup)
1962 dup_mode = drm_mode_duplicate(dev, mode);
1963 else
1964 dup_mode = mode;
1965 ret = drm_mode_attachmode(dev, connector, dup_mode);
1966 if (ret)
1967 return ret;
1968 need_dup = 1;
1969 }
1970 }
1971 return 0;
1972 }
1973 EXPORT_SYMBOL(drm_mode_attachmode_crtc);
1974
1975 static int drm_mode_detachmode(struct drm_device *dev,
1976 struct drm_connector *connector,
1977 struct drm_display_mode *mode)
1978 {
1979 int found = 0;
1980 int ret = 0;
1981 struct drm_display_mode *match_mode, *t;
1982
1983 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
1984 if (drm_mode_equal(match_mode, mode)) {
1985 list_del(&match_mode->head);
1986 drm_mode_destroy(dev, match_mode);
1987 found = 1;
1988 break;
1989 }
1990 }
1991
1992 if (!found)
1993 ret = -EINVAL;
1994
1995 return ret;
1996 }
1997
1998 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
1999 {
2000 struct drm_connector *connector;
2001
2002 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
2003 drm_mode_detachmode(dev, connector, mode);
2004 }
2005 return 0;
2006 }
2007 EXPORT_SYMBOL(drm_mode_detachmode_crtc);
2008
2009 /**
2010 * drm_fb_attachmode - Attach a user mode to an connector
2011 * @inode: inode from the ioctl
2012 * @filp: file * from the ioctl
2013 * @cmd: cmd from ioctl
2014 * @arg: arg from ioctl
2015 *
2016 * This attaches a user specified mode to an connector.
2017 * Called by the user via ioctl.
2018 *
2019 * RETURNS:
2020 * Zero on success, errno on failure.
2021 */
2022 int drm_mode_attachmode_ioctl(struct drm_device *dev,
2023 void *data, struct drm_file *file_priv)
2024 {
2025 struct drm_mode_mode_cmd *mode_cmd = data;
2026 struct drm_connector *connector;
2027 struct drm_display_mode *mode;
2028 struct drm_mode_object *obj;
2029 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2030 int ret = 0;
2031
2032 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2033 return -EINVAL;
2034
2035 mutex_lock(&dev->mode_config.mutex);
2036
2037 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2038 if (!obj) {
2039 ret = -EINVAL;
2040 goto out;
2041 }
2042 connector = obj_to_connector(obj);
2043
2044 mode = drm_mode_create(dev);
2045 if (!mode) {
2046 ret = -ENOMEM;
2047 goto out;
2048 }
2049
2050 drm_crtc_convert_umode(mode, umode);
2051
2052 ret = drm_mode_attachmode(dev, connector, mode);
2053 out:
2054 mutex_unlock(&dev->mode_config.mutex);
2055 return ret;
2056 }
2057
2058
2059 /**
2060 * drm_fb_detachmode - Detach a user specified mode from an connector
2061 * @inode: inode from the ioctl
2062 * @filp: file * from the ioctl
2063 * @cmd: cmd from ioctl
2064 * @arg: arg from ioctl
2065 *
2066 * Called by the user via ioctl.
2067 *
2068 * RETURNS:
2069 * Zero on success, errno on failure.
2070 */
2071 int drm_mode_detachmode_ioctl(struct drm_device *dev,
2072 void *data, struct drm_file *file_priv)
2073 {
2074 struct drm_mode_object *obj;
2075 struct drm_mode_mode_cmd *mode_cmd = data;
2076 struct drm_connector *connector;
2077 struct drm_display_mode mode;
2078 struct drm_mode_modeinfo *umode = &mode_cmd->mode;
2079 int ret = 0;
2080
2081 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2082 return -EINVAL;
2083
2084 mutex_lock(&dev->mode_config.mutex);
2085
2086 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2087 if (!obj) {
2088 ret = -EINVAL;
2089 goto out;
2090 }
2091 connector = obj_to_connector(obj);
2092
2093 drm_crtc_convert_umode(&mode, umode);
2094 ret = drm_mode_detachmode(dev, connector, &mode);
2095 out:
2096 mutex_unlock(&dev->mode_config.mutex);
2097 return ret;
2098 }
2099
2100 struct drm_property *drm_property_create(struct drm_device *dev, int flags,
2101 const char *name, int num_values)
2102 {
2103 struct drm_property *property = NULL;
2104
2105 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
2106 if (!property)
2107 return NULL;
2108
2109 if (num_values) {
2110 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
2111 if (!property->values)
2112 goto fail;
2113 }
2114
2115 drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
2116 property->flags = flags;
2117 property->num_values = num_values;
2118 INIT_LIST_HEAD(&property->enum_blob_list);
2119
2120 if (name)
2121 strncpy(property->name, name, DRM_PROP_NAME_LEN);
2122
2123 list_add_tail(&property->head, &dev->mode_config.property_list);
2124 return property;
2125 fail:
2126 kfree(property);
2127 return NULL;
2128 }
2129 EXPORT_SYMBOL(drm_property_create);
2130
2131 int drm_property_add_enum(struct drm_property *property, int index,
2132 uint64_t value, const char *name)
2133 {
2134 struct drm_property_enum *prop_enum;
2135
2136 if (!(property->flags & DRM_MODE_PROP_ENUM))
2137 return -EINVAL;
2138
2139 if (!list_empty(&property->enum_blob_list)) {
2140 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2141 if (prop_enum->value == value) {
2142 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2143 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2144 return 0;
2145 }
2146 }
2147 }
2148
2149 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
2150 if (!prop_enum)
2151 return -ENOMEM;
2152
2153 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
2154 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
2155 prop_enum->value = value;
2156
2157 property->values[index] = value;
2158 list_add_tail(&prop_enum->head, &property->enum_blob_list);
2159 return 0;
2160 }
2161 EXPORT_SYMBOL(drm_property_add_enum);
2162
2163 void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
2164 {
2165 struct drm_property_enum *prop_enum, *pt;
2166
2167 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
2168 list_del(&prop_enum->head);
2169 kfree(prop_enum);
2170 }
2171
2172 if (property->num_values)
2173 kfree(property->values);
2174 drm_mode_object_put(dev, &property->base);
2175 list_del(&property->head);
2176 kfree(property);
2177 }
2178 EXPORT_SYMBOL(drm_property_destroy);
2179
2180 int drm_connector_attach_property(struct drm_connector *connector,
2181 struct drm_property *property, uint64_t init_val)
2182 {
2183 int i;
2184
2185 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2186 if (connector->property_ids[i] == 0) {
2187 connector->property_ids[i] = property->base.id;
2188 connector->property_values[i] = init_val;
2189 break;
2190 }
2191 }
2192
2193 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2194 return -EINVAL;
2195 return 0;
2196 }
2197 EXPORT_SYMBOL(drm_connector_attach_property);
2198
2199 int drm_connector_property_set_value(struct drm_connector *connector,
2200 struct drm_property *property, uint64_t value)
2201 {
2202 int i;
2203
2204 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2205 if (connector->property_ids[i] == property->base.id) {
2206 connector->property_values[i] = value;
2207 break;
2208 }
2209 }
2210
2211 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2212 return -EINVAL;
2213 return 0;
2214 }
2215 EXPORT_SYMBOL(drm_connector_property_set_value);
2216
2217 int drm_connector_property_get_value(struct drm_connector *connector,
2218 struct drm_property *property, uint64_t *val)
2219 {
2220 int i;
2221
2222 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2223 if (connector->property_ids[i] == property->base.id) {
2224 *val = connector->property_values[i];
2225 break;
2226 }
2227 }
2228
2229 if (i == DRM_CONNECTOR_MAX_PROPERTY)
2230 return -EINVAL;
2231 return 0;
2232 }
2233 EXPORT_SYMBOL(drm_connector_property_get_value);
2234
2235 int drm_mode_getproperty_ioctl(struct drm_device *dev,
2236 void *data, struct drm_file *file_priv)
2237 {
2238 struct drm_mode_object *obj;
2239 struct drm_mode_get_property *out_resp = data;
2240 struct drm_property *property;
2241 int enum_count = 0;
2242 int blob_count = 0;
2243 int value_count = 0;
2244 int ret = 0, i;
2245 int copied;
2246 struct drm_property_enum *prop_enum;
2247 struct drm_mode_property_enum __user *enum_ptr;
2248 struct drm_property_blob *prop_blob;
2249 uint32_t *blob_id_ptr;
2250 uint64_t __user *values_ptr;
2251 uint32_t __user *blob_length_ptr;
2252
2253 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2254 return -EINVAL;
2255
2256 mutex_lock(&dev->mode_config.mutex);
2257 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2258 if (!obj) {
2259 ret = -EINVAL;
2260 goto done;
2261 }
2262 property = obj_to_property(obj);
2263
2264 if (property->flags & DRM_MODE_PROP_ENUM) {
2265 list_for_each_entry(prop_enum, &property->enum_blob_list, head)
2266 enum_count++;
2267 } else if (property->flags & DRM_MODE_PROP_BLOB) {
2268 list_for_each_entry(prop_blob, &property->enum_blob_list, head)
2269 blob_count++;
2270 }
2271
2272 value_count = property->num_values;
2273
2274 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
2275 out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
2276 out_resp->flags = property->flags;
2277
2278 if ((out_resp->count_values >= value_count) && value_count) {
2279 values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
2280 for (i = 0; i < value_count; i++) {
2281 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
2282 ret = -EFAULT;
2283 goto done;
2284 }
2285 }
2286 }
2287 out_resp->count_values = value_count;
2288
2289 if (property->flags & DRM_MODE_PROP_ENUM) {
2290 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
2291 copied = 0;
2292 enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
2293 list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
2294
2295 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
2296 ret = -EFAULT;
2297 goto done;
2298 }
2299
2300 if (copy_to_user(&enum_ptr[copied].name,
2301 &prop_enum->name, DRM_PROP_NAME_LEN)) {
2302 ret = -EFAULT;
2303 goto done;
2304 }
2305 copied++;
2306 }
2307 }
2308 out_resp->count_enum_blobs = enum_count;
2309 }
2310
2311 if (property->flags & DRM_MODE_PROP_BLOB) {
2312 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
2313 copied = 0;
2314 blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
2315 blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
2316
2317 list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
2318 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
2319 ret = -EFAULT;
2320 goto done;
2321 }
2322
2323 if (put_user(prop_blob->length, blob_length_ptr + copied)) {
2324 ret = -EFAULT;
2325 goto done;
2326 }
2327
2328 copied++;
2329 }
2330 }
2331 out_resp->count_enum_blobs = blob_count;
2332 }
2333 done:
2334 mutex_unlock(&dev->mode_config.mutex);
2335 return ret;
2336 }
2337
2338 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
2339 void *data)
2340 {
2341 struct drm_property_blob *blob;
2342
2343 if (!length || !data)
2344 return NULL;
2345
2346 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
2347 if (!blob)
2348 return NULL;
2349
2350 blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
2351 blob->length = length;
2352
2353 memcpy(blob->data, data, length);
2354
2355 drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
2356
2357 list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
2358 return blob;
2359 }
2360
2361 static void drm_property_destroy_blob(struct drm_device *dev,
2362 struct drm_property_blob *blob)
2363 {
2364 drm_mode_object_put(dev, &blob->base);
2365 list_del(&blob->head);
2366 kfree(blob);
2367 }
2368
2369 int drm_mode_getblob_ioctl(struct drm_device *dev,
2370 void *data, struct drm_file *file_priv)
2371 {
2372 struct drm_mode_object *obj;
2373 struct drm_mode_get_blob *out_resp = data;
2374 struct drm_property_blob *blob;
2375 int ret = 0;
2376 void *blob_ptr;
2377
2378 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2379 return -EINVAL;
2380
2381 mutex_lock(&dev->mode_config.mutex);
2382 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
2383 if (!obj) {
2384 ret = -EINVAL;
2385 goto done;
2386 }
2387 blob = obj_to_blob(obj);
2388
2389 if (out_resp->length == blob->length) {
2390 blob_ptr = (void *)(unsigned long)out_resp->data;
2391 if (copy_to_user(blob_ptr, blob->data, blob->length)){
2392 ret = -EFAULT;
2393 goto done;
2394 }
2395 }
2396 out_resp->length = blob->length;
2397
2398 done:
2399 mutex_unlock(&dev->mode_config.mutex);
2400 return ret;
2401 }
2402
2403 int drm_mode_connector_update_edid_property(struct drm_connector *connector,
2404 struct edid *edid)
2405 {
2406 struct drm_device *dev = connector->dev;
2407 int ret = 0, size;
2408
2409 if (connector->edid_blob_ptr)
2410 drm_property_destroy_blob(dev, connector->edid_blob_ptr);
2411
2412 /* Delete edid, when there is none. */
2413 if (!edid) {
2414 connector->edid_blob_ptr = NULL;
2415 ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
2416 return ret;
2417 }
2418
2419 size = EDID_LENGTH * (1 + edid->extensions);
2420 connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
2421 size, edid);
2422
2423 ret = drm_connector_property_set_value(connector,
2424 dev->mode_config.edid_property,
2425 connector->edid_blob_ptr->base.id);
2426
2427 return ret;
2428 }
2429 EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
2430
2431 int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
2432 void *data, struct drm_file *file_priv)
2433 {
2434 struct drm_mode_connector_set_property *out_resp = data;
2435 struct drm_mode_object *obj;
2436 struct drm_property *property;
2437 struct drm_connector *connector;
2438 int ret = -EINVAL;
2439 int i;
2440
2441 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2442 return -EINVAL;
2443
2444 mutex_lock(&dev->mode_config.mutex);
2445
2446 obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
2447 if (!obj) {
2448 goto out;
2449 }
2450 connector = obj_to_connector(obj);
2451
2452 for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
2453 if (connector->property_ids[i] == out_resp->prop_id)
2454 break;
2455 }
2456
2457 if (i == DRM_CONNECTOR_MAX_PROPERTY) {
2458 goto out;
2459 }
2460
2461 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
2462 if (!obj) {
2463 goto out;
2464 }
2465 property = obj_to_property(obj);
2466
2467 if (property->flags & DRM_MODE_PROP_IMMUTABLE)
2468 goto out;
2469
2470 if (property->flags & DRM_MODE_PROP_RANGE) {
2471 if (out_resp->value < property->values[0])
2472 goto out;
2473
2474 if (out_resp->value > property->values[1])
2475 goto out;
2476 } else {
2477 int found = 0;
2478 for (i = 0; i < property->num_values; i++) {
2479 if (property->values[i] == out_resp->value) {
2480 found = 1;
2481 break;
2482 }
2483 }
2484 if (!found) {
2485 goto out;
2486 }
2487 }
2488
2489 /* Do DPMS ourselves */
2490 if (property == connector->dev->mode_config.dpms_property) {
2491 if (connector->funcs->dpms)
2492 (*connector->funcs->dpms)(connector, (int) out_resp->value);
2493 ret = 0;
2494 } else if (connector->funcs->set_property)
2495 ret = connector->funcs->set_property(connector, property, out_resp->value);
2496
2497 /* store the property value if successful */
2498 if (!ret)
2499 drm_connector_property_set_value(connector, property, out_resp->value);
2500 out:
2501 mutex_unlock(&dev->mode_config.mutex);
2502 return ret;
2503 }
2504
2505 int drm_mode_connector_attach_encoder(struct drm_connector *connector,
2506 struct drm_encoder *encoder)
2507 {
2508 int i;
2509
2510 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2511 if (connector->encoder_ids[i] == 0) {
2512 connector->encoder_ids[i] = encoder->base.id;
2513 return 0;
2514 }
2515 }
2516 return -ENOMEM;
2517 }
2518 EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
2519
2520 void drm_mode_connector_detach_encoder(struct drm_connector *connector,
2521 struct drm_encoder *encoder)
2522 {
2523 int i;
2524 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
2525 if (connector->encoder_ids[i] == encoder->base.id) {
2526 connector->encoder_ids[i] = 0;
2527 if (connector->encoder == encoder)
2528 connector->encoder = NULL;
2529 break;
2530 }
2531 }
2532 }
2533 EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
2534
2535 bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
2536 int gamma_size)
2537 {
2538 crtc->gamma_size = gamma_size;
2539
2540 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
2541 if (!crtc->gamma_store) {
2542 crtc->gamma_size = 0;
2543 return false;
2544 }
2545
2546 return true;
2547 }
2548 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
2549
2550 int drm_mode_gamma_set_ioctl(struct drm_device *dev,
2551 void *data, struct drm_file *file_priv)
2552 {
2553 struct drm_mode_crtc_lut *crtc_lut = data;
2554 struct drm_mode_object *obj;
2555 struct drm_crtc *crtc;
2556 void *r_base, *g_base, *b_base;
2557 int size;
2558 int ret = 0;
2559
2560 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2561 return -EINVAL;
2562
2563 mutex_lock(&dev->mode_config.mutex);
2564 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2565 if (!obj) {
2566 ret = -EINVAL;
2567 goto out;
2568 }
2569 crtc = obj_to_crtc(obj);
2570
2571 /* memcpy into gamma store */
2572 if (crtc_lut->gamma_size != crtc->gamma_size) {
2573 ret = -EINVAL;
2574 goto out;
2575 }
2576
2577 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2578 r_base = crtc->gamma_store;
2579 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
2580 ret = -EFAULT;
2581 goto out;
2582 }
2583
2584 g_base = r_base + size;
2585 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
2586 ret = -EFAULT;
2587 goto out;
2588 }
2589
2590 b_base = g_base + size;
2591 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
2592 ret = -EFAULT;
2593 goto out;
2594 }
2595
2596 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
2597
2598 out:
2599 mutex_unlock(&dev->mode_config.mutex);
2600 return ret;
2601
2602 }
2603
2604 int drm_mode_gamma_get_ioctl(struct drm_device *dev,
2605 void *data, struct drm_file *file_priv)
2606 {
2607 struct drm_mode_crtc_lut *crtc_lut = data;
2608 struct drm_mode_object *obj;
2609 struct drm_crtc *crtc;
2610 void *r_base, *g_base, *b_base;
2611 int size;
2612 int ret = 0;
2613
2614 if (!drm_core_check_feature(dev, DRIVER_MODESET))
2615 return -EINVAL;
2616
2617 mutex_lock(&dev->mode_config.mutex);
2618 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
2619 if (!obj) {
2620 ret = -EINVAL;
2621 goto out;
2622 }
2623 crtc = obj_to_crtc(obj);
2624
2625 /* memcpy into gamma store */
2626 if (crtc_lut->gamma_size != crtc->gamma_size) {
2627 ret = -EINVAL;
2628 goto out;
2629 }
2630
2631 size = crtc_lut->gamma_size * (sizeof(uint16_t));
2632 r_base = crtc->gamma_store;
2633 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
2634 ret = -EFAULT;
2635 goto out;
2636 }
2637
2638 g_base = r_base + size;
2639 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
2640 ret = -EFAULT;
2641 goto out;
2642 }
2643
2644 b_base = g_base + size;
2645 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
2646 ret = -EFAULT;
2647 goto out;
2648 }
2649 out:
2650 mutex_unlock(&dev->mode_config.mutex);
2651 return ret;
2652 }
2653
2654 int drm_mode_page_flip_ioctl(struct drm_device *dev,
2655 void *data, struct drm_file *file_priv)
2656 {
2657 struct drm_mode_crtc_page_flip *page_flip = data;
2658 struct drm_mode_object *obj;
2659 struct drm_crtc *crtc;
2660 struct drm_framebuffer *fb;
2661 struct drm_pending_vblank_event *e = NULL;
2662 unsigned long flags;
2663 int ret = -EINVAL;
2664
2665 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
2666 page_flip->reserved != 0)
2667 return -EINVAL;
2668
2669 mutex_lock(&dev->mode_config.mutex);
2670 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
2671 if (!obj)
2672 goto out;
2673 crtc = obj_to_crtc(obj);
2674
2675 if (crtc->fb == NULL) {
2676 /* The framebuffer is currently unbound, presumably
2677 * due to a hotplug event, that userspace has not
2678 * yet discovered.
2679 */
2680 ret = -EBUSY;
2681 goto out;
2682 }
2683
2684 if (crtc->funcs->page_flip == NULL)
2685 goto out;
2686
2687 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
2688 if (!obj)
2689 goto out;
2690 fb = obj_to_fb(obj);
2691
2692 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
2693 ret = -ENOMEM;
2694 spin_lock_irqsave(&dev->event_lock, flags);
2695 if (file_priv->event_space < sizeof e->event) {
2696 spin_unlock_irqrestore(&dev->event_lock, flags);
2697 goto out;
2698 }
2699 file_priv->event_space -= sizeof e->event;
2700 spin_unlock_irqrestore(&dev->event_lock, flags);
2701
2702 e = kzalloc(sizeof *e, GFP_KERNEL);
2703 if (e == NULL) {
2704 spin_lock_irqsave(&dev->event_lock, flags);
2705 file_priv->event_space += sizeof e->event;
2706 spin_unlock_irqrestore(&dev->event_lock, flags);
2707 goto out;
2708 }
2709
2710 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
2711 e->event.base.length = sizeof e->event;
2712 e->event.user_data = page_flip->user_data;
2713 e->base.event = &e->event.base;
2714 e->base.file_priv = file_priv;
2715 e->base.destroy =
2716 (void (*) (struct drm_pending_event *)) kfree;
2717 }
2718
2719 ret = crtc->funcs->page_flip(crtc, fb, e);
2720 if (ret) {
2721 spin_lock_irqsave(&dev->event_lock, flags);
2722 file_priv->event_space += sizeof e->event;
2723 spin_unlock_irqrestore(&dev->event_lock, flags);
2724 kfree(e);
2725 }
2726
2727 out:
2728 mutex_unlock(&dev->mode_config.mutex);
2729 return ret;
2730 }
2731
2732 void drm_mode_config_reset(struct drm_device *dev)
2733 {
2734 struct drm_crtc *crtc;
2735 struct drm_encoder *encoder;
2736 struct drm_connector *connector;
2737
2738 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
2739 if (crtc->funcs->reset)
2740 crtc->funcs->reset(crtc);
2741
2742 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
2743 if (encoder->funcs->reset)
2744 encoder->funcs->reset(encoder);
2745
2746 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
2747 if (connector->funcs->reset)
2748 connector->funcs->reset(connector);
2749 }
2750 EXPORT_SYMBOL(drm_mode_config_reset);
2751
2752 int drm_mode_create_dumb_ioctl(struct drm_device *dev,
2753 void *data, struct drm_file *file_priv)
2754 {
2755 struct drm_mode_create_dumb *args = data;
2756
2757 if (!dev->driver->dumb_create)
2758 return -ENOSYS;
2759 return dev->driver->dumb_create(file_priv, dev, args);
2760 }
2761
2762 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
2763 void *data, struct drm_file *file_priv)
2764 {
2765 struct drm_mode_map_dumb *args = data;
2766
2767 /* call driver ioctl to get mmap offset */
2768 if (!dev->driver->dumb_map_offset)
2769 return -ENOSYS;
2770
2771 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
2772 }
2773
2774 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
2775 void *data, struct drm_file *file_priv)
2776 {
2777 struct drm_mode_destroy_dumb *args = data;
2778
2779 if (!dev->driver->dumb_destroy)
2780 return -ENOSYS;
2781
2782 return dev->driver->dumb_destroy(file_priv, dev, args->handle);
2783 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree