]>
Commit | Line | Data |
---|---|---|
f453ba04 DA |
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 | */ | |
6ba6d03e | 32 | #include <linux/ctype.h> |
f453ba04 | 33 | #include <linux/list.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
2d1a8a48 | 35 | #include <linux/export.h> |
760285e7 DH |
36 | #include <drm/drmP.h> |
37 | #include <drm/drm_crtc.h> | |
38 | #include <drm/drm_edid.h> | |
39 | #include <drm/drm_fourcc.h> | |
51fd371b | 40 | #include <drm/drm_modeset_lock.h> |
88a48e29 | 41 | #include <drm/drm_atomic.h> |
3b96a0b1 | 42 | #include <drm/drm_auth.h> |
9edbf1fa | 43 | #include <drm/drm_debugfs_crc.h> |
f453ba04 | 44 | |
8bd441b2 | 45 | #include "drm_crtc_internal.h" |
67d0ec4e | 46 | #include "drm_internal.h" |
8bd441b2 | 47 | |
f453ba04 DA |
48 | /* |
49 | * Global properties | |
50 | */ | |
4dfd909f | 51 | static const struct drm_prop_enum_list drm_plane_type_enum_list[] = { |
9922ab5a RC |
52 | { DRM_PLANE_TYPE_OVERLAY, "Overlay" }, |
53 | { DRM_PLANE_TYPE_PRIMARY, "Primary" }, | |
54 | { DRM_PLANE_TYPE_CURSOR, "Cursor" }, | |
55 | }; | |
56 | ||
52217195 DV |
57 | /* |
58 | * Optional properties | |
ac1bb36c | 59 | */ |
6a0d9528 LW |
60 | /** |
61 | * drm_crtc_force_disable - Forcibly turn off a CRTC | |
62 | * @crtc: CRTC to turn off | |
63 | * | |
64 | * Returns: | |
65 | * Zero on success, error code on failure. | |
66 | */ | |
67 | int drm_crtc_force_disable(struct drm_crtc *crtc) | |
68 | { | |
69 | struct drm_mode_set set = { | |
70 | .crtc = crtc, | |
71 | }; | |
72 | ||
73 | return drm_mode_set_config_internal(&set); | |
74 | } | |
75 | EXPORT_SYMBOL(drm_crtc_force_disable); | |
76 | ||
77 | /** | |
78 | * drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs | |
79 | * @dev: DRM device whose CRTCs to turn off | |
80 | * | |
81 | * Drivers may want to call this on unload to ensure that all displays are | |
82 | * unlit and the GPU is in a consistent, low power state. Takes modeset locks. | |
83 | * | |
84 | * Returns: | |
85 | * Zero on success, error code on failure. | |
86 | */ | |
87 | int drm_crtc_force_disable_all(struct drm_device *dev) | |
88 | { | |
89 | struct drm_crtc *crtc; | |
90 | int ret = 0; | |
91 | ||
92 | drm_modeset_lock_all(dev); | |
93 | drm_for_each_crtc(crtc, dev) | |
94 | if (crtc->enabled) { | |
95 | ret = drm_crtc_force_disable(crtc); | |
96 | if (ret) | |
97 | goto out; | |
98 | } | |
99 | out: | |
100 | drm_modeset_unlock_all(dev); | |
101 | return ret; | |
102 | } | |
103 | EXPORT_SYMBOL(drm_crtc_force_disable_all); | |
104 | ||
51fd371b RC |
105 | DEFINE_WW_CLASS(crtc_ww_class); |
106 | ||
fa3ab4c2 VS |
107 | static unsigned int drm_num_crtcs(struct drm_device *dev) |
108 | { | |
109 | unsigned int num = 0; | |
110 | struct drm_crtc *tmp; | |
111 | ||
112 | drm_for_each_crtc(tmp, dev) { | |
113 | num++; | |
114 | } | |
115 | ||
116 | return num; | |
117 | } | |
118 | ||
79190ea2 BG |
119 | static int drm_crtc_register_all(struct drm_device *dev) |
120 | { | |
121 | struct drm_crtc *crtc; | |
122 | int ret = 0; | |
123 | ||
124 | drm_for_each_crtc(crtc, dev) { | |
9edbf1fa TV |
125 | if (drm_debugfs_crtc_add(crtc)) |
126 | DRM_ERROR("Failed to initialize debugfs entry for CRTC '%s'.\n", | |
127 | crtc->name); | |
128 | ||
79190ea2 BG |
129 | if (crtc->funcs->late_register) |
130 | ret = crtc->funcs->late_register(crtc); | |
131 | if (ret) | |
132 | return ret; | |
133 | } | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | static void drm_crtc_unregister_all(struct drm_device *dev) | |
139 | { | |
140 | struct drm_crtc *crtc; | |
141 | ||
142 | drm_for_each_crtc(crtc, dev) { | |
143 | if (crtc->funcs->early_unregister) | |
144 | crtc->funcs->early_unregister(crtc); | |
9edbf1fa | 145 | drm_debugfs_crtc_remove(crtc); |
79190ea2 BG |
146 | } |
147 | } | |
148 | ||
9edbf1fa TV |
149 | static int drm_crtc_crc_init(struct drm_crtc *crtc) |
150 | { | |
151 | #ifdef CONFIG_DEBUG_FS | |
152 | spin_lock_init(&crtc->crc.lock); | |
153 | init_waitqueue_head(&crtc->crc.wq); | |
154 | crtc->crc.source = kstrdup("auto", GFP_KERNEL); | |
155 | if (!crtc->crc.source) | |
156 | return -ENOMEM; | |
157 | #endif | |
158 | return 0; | |
159 | } | |
160 | ||
161 | static void drm_crtc_crc_fini(struct drm_crtc *crtc) | |
162 | { | |
163 | #ifdef CONFIG_DEBUG_FS | |
164 | kfree(crtc->crc.source); | |
165 | #endif | |
166 | } | |
167 | ||
f453ba04 | 168 | /** |
e13161af MR |
169 | * drm_crtc_init_with_planes - Initialise a new CRTC object with |
170 | * specified primary and cursor planes. | |
f453ba04 DA |
171 | * @dev: DRM device |
172 | * @crtc: CRTC object to init | |
e13161af MR |
173 | * @primary: Primary plane for CRTC |
174 | * @cursor: Cursor plane for CRTC | |
f453ba04 | 175 | * @funcs: callbacks for the new CRTC |
f9882876 | 176 | * @name: printf style format string for the CRTC name, or NULL for default name |
f453ba04 | 177 | * |
532b3671 DV |
178 | * Inits a new object created as base part of a driver crtc object. Drivers |
179 | * should use this function instead of drm_crtc_init(), which is only provided | |
180 | * for backwards compatibility with drivers which do not yet support universal | |
181 | * planes). For really simple hardware which has only 1 plane look at | |
182 | * drm_simple_display_pipe_init() instead. | |
6bfc56aa | 183 | * |
c8e32cc1 | 184 | * Returns: |
6bfc56aa | 185 | * Zero on success, error code on failure. |
f453ba04 | 186 | */ |
e13161af MR |
187 | int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, |
188 | struct drm_plane *primary, | |
fc1d3e44 | 189 | struct drm_plane *cursor, |
f9882876 VS |
190 | const struct drm_crtc_funcs *funcs, |
191 | const char *name, ...) | |
f453ba04 | 192 | { |
51fd371b | 193 | struct drm_mode_config *config = &dev->mode_config; |
6bfc56aa VS |
194 | int ret; |
195 | ||
522cf91f BG |
196 | WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY); |
197 | WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR); | |
198 | ||
f453ba04 DA |
199 | crtc->dev = dev; |
200 | crtc->funcs = funcs; | |
201 | ||
3b24f7d6 DV |
202 | INIT_LIST_HEAD(&crtc->commit_list); |
203 | spin_lock_init(&crtc->commit_lock); | |
204 | ||
51fd371b | 205 | drm_modeset_lock_init(&crtc->mutex); |
6bfc56aa VS |
206 | ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); |
207 | if (ret) | |
baf698b0 | 208 | return ret; |
f453ba04 | 209 | |
fa3ab4c2 VS |
210 | if (name) { |
211 | va_list ap; | |
212 | ||
213 | va_start(ap, name); | |
214 | crtc->name = kvasprintf(GFP_KERNEL, name, ap); | |
215 | va_end(ap); | |
216 | } else { | |
217 | crtc->name = kasprintf(GFP_KERNEL, "crtc-%d", | |
218 | drm_num_crtcs(dev)); | |
219 | } | |
220 | if (!crtc->name) { | |
7c8f6d25 | 221 | drm_mode_object_unregister(dev, &crtc->base); |
fa3ab4c2 VS |
222 | return -ENOMEM; |
223 | } | |
224 | ||
bffd9de0 PZ |
225 | crtc->base.properties = &crtc->properties; |
226 | ||
51fd371b | 227 | list_add_tail(&crtc->head, &config->crtc_list); |
490d3d1b | 228 | crtc->index = config->num_crtc++; |
6bfc56aa | 229 | |
e13161af | 230 | crtc->primary = primary; |
fc1d3e44 | 231 | crtc->cursor = cursor; |
e13161af MR |
232 | if (primary) |
233 | primary->possible_crtcs = 1 << drm_crtc_index(crtc); | |
fc1d3e44 MR |
234 | if (cursor) |
235 | cursor->possible_crtcs = 1 << drm_crtc_index(crtc); | |
e13161af | 236 | |
9edbf1fa TV |
237 | ret = drm_crtc_crc_init(crtc); |
238 | if (ret) { | |
239 | drm_mode_object_unregister(dev, &crtc->base); | |
240 | return ret; | |
241 | } | |
242 | ||
eab3bbef DV |
243 | if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { |
244 | drm_object_attach_property(&crtc->base, config->prop_active, 0); | |
955f3c33 | 245 | drm_object_attach_property(&crtc->base, config->prop_mode_id, 0); |
eab3bbef DV |
246 | } |
247 | ||
baf698b0 | 248 | return 0; |
f453ba04 | 249 | } |
e13161af | 250 | EXPORT_SYMBOL(drm_crtc_init_with_planes); |
f453ba04 DA |
251 | |
252 | /** | |
ad6f5c34 | 253 | * drm_crtc_cleanup - Clean up the core crtc usage |
f453ba04 DA |
254 | * @crtc: CRTC to cleanup |
255 | * | |
ad6f5c34 VS |
256 | * This function cleans up @crtc and removes it from the DRM mode setting |
257 | * core. Note that the function does *not* free the crtc structure itself, | |
258 | * this is the responsibility of the caller. | |
f453ba04 DA |
259 | */ |
260 | void drm_crtc_cleanup(struct drm_crtc *crtc) | |
261 | { | |
262 | struct drm_device *dev = crtc->dev; | |
263 | ||
490d3d1b CW |
264 | /* Note that the crtc_list is considered to be static; should we |
265 | * remove the drm_crtc at runtime we would have to decrement all | |
266 | * the indices on the drm_crtc after us in the crtc_list. | |
267 | */ | |
268 | ||
9edbf1fa TV |
269 | drm_crtc_crc_fini(crtc); |
270 | ||
9e1c156f SK |
271 | kfree(crtc->gamma_store); |
272 | crtc->gamma_store = NULL; | |
f453ba04 | 273 | |
51fd371b RC |
274 | drm_modeset_lock_fini(&crtc->mutex); |
275 | ||
7c8f6d25 | 276 | drm_mode_object_unregister(dev, &crtc->base); |
f453ba04 DA |
277 | list_del(&crtc->head); |
278 | dev->mode_config.num_crtc--; | |
3009c037 TR |
279 | |
280 | WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state); | |
281 | if (crtc->state && crtc->funcs->atomic_destroy_state) | |
282 | crtc->funcs->atomic_destroy_state(crtc, crtc->state); | |
a18c0af1 | 283 | |
fa3ab4c2 VS |
284 | kfree(crtc->name); |
285 | ||
a18c0af1 | 286 | memset(crtc, 0, sizeof(*crtc)); |
f453ba04 DA |
287 | } |
288 | EXPORT_SYMBOL(drm_crtc_cleanup); | |
289 | ||
79190ea2 BG |
290 | int drm_modeset_register_all(struct drm_device *dev) |
291 | { | |
292 | int ret; | |
293 | ||
294 | ret = drm_plane_register_all(dev); | |
295 | if (ret) | |
296 | goto err_plane; | |
297 | ||
298 | ret = drm_crtc_register_all(dev); | |
299 | if (ret) | |
300 | goto err_crtc; | |
301 | ||
302 | ret = drm_encoder_register_all(dev); | |
303 | if (ret) | |
304 | goto err_encoder; | |
305 | ||
306 | ret = drm_connector_register_all(dev); | |
307 | if (ret) | |
308 | goto err_connector; | |
309 | ||
310 | return 0; | |
311 | ||
312 | err_connector: | |
313 | drm_encoder_unregister_all(dev); | |
314 | err_encoder: | |
315 | drm_crtc_unregister_all(dev); | |
316 | err_crtc: | |
317 | drm_plane_unregister_all(dev); | |
318 | err_plane: | |
319 | return ret; | |
320 | } | |
321 | ||
322 | void drm_modeset_unregister_all(struct drm_device *dev) | |
323 | { | |
324 | drm_connector_unregister_all(dev); | |
325 | drm_encoder_unregister_all(dev); | |
326 | drm_crtc_unregister_all(dev); | |
327 | drm_plane_unregister_all(dev); | |
328 | } | |
329 | ||
6b4959f4 | 330 | static int drm_mode_create_standard_properties(struct drm_device *dev) |
f453ba04 | 331 | { |
356af0e1 | 332 | struct drm_property *prop; |
52217195 | 333 | int ret; |
f453ba04 | 334 | |
52217195 DV |
335 | ret = drm_connector_create_standard_properties(dev); |
336 | if (ret) | |
337 | return ret; | |
9922ab5a | 338 | |
6b4959f4 | 339 | prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, |
9922ab5a RC |
340 | "type", drm_plane_type_enum_list, |
341 | ARRAY_SIZE(drm_plane_type_enum_list)); | |
6b4959f4 RC |
342 | if (!prop) |
343 | return -ENOMEM; | |
344 | dev->mode_config.plane_type_property = prop; | |
345 | ||
346 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
347 | "SRC_X", 0, UINT_MAX); | |
348 | if (!prop) | |
349 | return -ENOMEM; | |
350 | dev->mode_config.prop_src_x = prop; | |
351 | ||
352 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
353 | "SRC_Y", 0, UINT_MAX); | |
354 | if (!prop) | |
355 | return -ENOMEM; | |
356 | dev->mode_config.prop_src_y = prop; | |
357 | ||
358 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
359 | "SRC_W", 0, UINT_MAX); | |
360 | if (!prop) | |
361 | return -ENOMEM; | |
362 | dev->mode_config.prop_src_w = prop; | |
363 | ||
364 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
365 | "SRC_H", 0, UINT_MAX); | |
366 | if (!prop) | |
367 | return -ENOMEM; | |
368 | dev->mode_config.prop_src_h = prop; | |
369 | ||
370 | prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, | |
371 | "CRTC_X", INT_MIN, INT_MAX); | |
372 | if (!prop) | |
373 | return -ENOMEM; | |
374 | dev->mode_config.prop_crtc_x = prop; | |
375 | ||
376 | prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, | |
377 | "CRTC_Y", INT_MIN, INT_MAX); | |
378 | if (!prop) | |
379 | return -ENOMEM; | |
380 | dev->mode_config.prop_crtc_y = prop; | |
381 | ||
382 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
383 | "CRTC_W", 0, INT_MAX); | |
384 | if (!prop) | |
385 | return -ENOMEM; | |
386 | dev->mode_config.prop_crtc_w = prop; | |
387 | ||
388 | prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, | |
389 | "CRTC_H", 0, INT_MAX); | |
390 | if (!prop) | |
391 | return -ENOMEM; | |
392 | dev->mode_config.prop_crtc_h = prop; | |
393 | ||
394 | prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC, | |
395 | "FB_ID", DRM_MODE_OBJECT_FB); | |
396 | if (!prop) | |
397 | return -ENOMEM; | |
398 | dev->mode_config.prop_fb_id = prop; | |
399 | ||
400 | prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC, | |
401 | "CRTC_ID", DRM_MODE_OBJECT_CRTC); | |
402 | if (!prop) | |
403 | return -ENOMEM; | |
404 | dev->mode_config.prop_crtc_id = prop; | |
9922ab5a | 405 | |
eab3bbef DV |
406 | prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC, |
407 | "ACTIVE"); | |
408 | if (!prop) | |
409 | return -ENOMEM; | |
410 | dev->mode_config.prop_active = prop; | |
411 | ||
955f3c33 DS |
412 | prop = drm_property_create(dev, |
413 | DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB, | |
414 | "MODE_ID", 0); | |
415 | if (!prop) | |
416 | return -ENOMEM; | |
417 | dev->mode_config.prop_mode_id = prop; | |
418 | ||
5488dc16 LL |
419 | prop = drm_property_create(dev, |
420 | DRM_MODE_PROP_BLOB, | |
421 | "DEGAMMA_LUT", 0); | |
422 | if (!prop) | |
423 | return -ENOMEM; | |
424 | dev->mode_config.degamma_lut_property = prop; | |
425 | ||
426 | prop = drm_property_create_range(dev, | |
427 | DRM_MODE_PROP_IMMUTABLE, | |
428 | "DEGAMMA_LUT_SIZE", 0, UINT_MAX); | |
429 | if (!prop) | |
430 | return -ENOMEM; | |
431 | dev->mode_config.degamma_lut_size_property = prop; | |
432 | ||
433 | prop = drm_property_create(dev, | |
434 | DRM_MODE_PROP_BLOB, | |
435 | "CTM", 0); | |
436 | if (!prop) | |
437 | return -ENOMEM; | |
438 | dev->mode_config.ctm_property = prop; | |
439 | ||
440 | prop = drm_property_create(dev, | |
441 | DRM_MODE_PROP_BLOB, | |
442 | "GAMMA_LUT", 0); | |
443 | if (!prop) | |
444 | return -ENOMEM; | |
445 | dev->mode_config.gamma_lut_property = prop; | |
446 | ||
447 | prop = drm_property_create_range(dev, | |
448 | DRM_MODE_PROP_IMMUTABLE, | |
449 | "GAMMA_LUT_SIZE", 0, UINT_MAX); | |
450 | if (!prop) | |
451 | return -ENOMEM; | |
452 | dev->mode_config.gamma_lut_size_property = prop; | |
453 | ||
9922ab5a RC |
454 | return 0; |
455 | } | |
456 | ||
f453ba04 DA |
457 | /** |
458 | * drm_mode_getresources - get graphics configuration | |
065a50ed DV |
459 | * @dev: drm device for the ioctl |
460 | * @data: data pointer for the ioctl | |
461 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 462 | * |
f453ba04 DA |
463 | * Construct a set of configuration description structures and return |
464 | * them to the user, including CRTC, connector and framebuffer configuration. | |
465 | * | |
466 | * Called by the user via ioctl. | |
467 | * | |
c8e32cc1 | 468 | * Returns: |
1a498633 | 469 | * Zero on success, negative errno on failure. |
f453ba04 DA |
470 | */ |
471 | int drm_mode_getresources(struct drm_device *dev, void *data, | |
472 | struct drm_file *file_priv) | |
473 | { | |
474 | struct drm_mode_card_res *card_res = data; | |
475 | struct list_head *lh; | |
476 | struct drm_framebuffer *fb; | |
477 | struct drm_connector *connector; | |
478 | struct drm_crtc *crtc; | |
479 | struct drm_encoder *encoder; | |
480 | int ret = 0; | |
481 | int connector_count = 0; | |
482 | int crtc_count = 0; | |
483 | int fb_count = 0; | |
484 | int encoder_count = 0; | |
9c7060f7 | 485 | int copied = 0; |
f453ba04 DA |
486 | uint32_t __user *fb_id; |
487 | uint32_t __user *crtc_id; | |
488 | uint32_t __user *connector_id; | |
489 | uint32_t __user *encoder_id; | |
f453ba04 | 490 | |
fb3b06c8 DA |
491 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
492 | return -EINVAL; | |
493 | ||
f453ba04 | 494 | |
4b096ac1 | 495 | mutex_lock(&file_priv->fbs_lock); |
f453ba04 DA |
496 | /* |
497 | * For the non-control nodes we need to limit the list of resources | |
498 | * by IDs in the group list for this node | |
499 | */ | |
500 | list_for_each(lh, &file_priv->fbs) | |
501 | fb_count++; | |
502 | ||
4b096ac1 DV |
503 | /* handle this in 4 parts */ |
504 | /* FBs */ | |
505 | if (card_res->count_fbs >= fb_count) { | |
506 | copied = 0; | |
507 | fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; | |
508 | list_for_each_entry(fb, &file_priv->fbs, filp_head) { | |
509 | if (put_user(fb->base.id, fb_id + copied)) { | |
510 | mutex_unlock(&file_priv->fbs_lock); | |
511 | return -EFAULT; | |
512 | } | |
513 | copied++; | |
514 | } | |
515 | } | |
516 | card_res->count_fbs = fb_count; | |
517 | mutex_unlock(&file_priv->fbs_lock); | |
518 | ||
fcf93f69 DV |
519 | /* mode_config.mutex protects the connector list against e.g. DP MST |
520 | * connector hot-adding. CRTC/Plane lists are invariant. */ | |
521 | mutex_lock(&dev->mode_config.mutex); | |
9c7060f7 DV |
522 | drm_for_each_crtc(crtc, dev) |
523 | crtc_count++; | |
f453ba04 | 524 | |
9c7060f7 DV |
525 | drm_for_each_connector(connector, dev) |
526 | connector_count++; | |
f453ba04 | 527 | |
9c7060f7 DV |
528 | drm_for_each_encoder(encoder, dev) |
529 | encoder_count++; | |
f453ba04 DA |
530 | |
531 | card_res->max_height = dev->mode_config.max_height; | |
532 | card_res->min_height = dev->mode_config.min_height; | |
533 | card_res->max_width = dev->mode_config.max_width; | |
534 | card_res->min_width = dev->mode_config.min_width; | |
535 | ||
f453ba04 DA |
536 | /* CRTCs */ |
537 | if (card_res->count_crtcs >= crtc_count) { | |
538 | copied = 0; | |
539 | crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; | |
9c7060f7 | 540 | drm_for_each_crtc(crtc, dev) { |
9c7060f7 DV |
541 | if (put_user(crtc->base.id, crtc_id + copied)) { |
542 | ret = -EFAULT; | |
543 | goto out; | |
f453ba04 | 544 | } |
9c7060f7 | 545 | copied++; |
f453ba04 DA |
546 | } |
547 | } | |
548 | card_res->count_crtcs = crtc_count; | |
549 | ||
550 | /* Encoders */ | |
551 | if (card_res->count_encoders >= encoder_count) { | |
552 | copied = 0; | |
553 | encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; | |
9c7060f7 | 554 | drm_for_each_encoder(encoder, dev) { |
9c7060f7 DV |
555 | if (put_user(encoder->base.id, encoder_id + |
556 | copied)) { | |
557 | ret = -EFAULT; | |
558 | goto out; | |
f453ba04 | 559 | } |
9c7060f7 | 560 | copied++; |
f453ba04 DA |
561 | } |
562 | } | |
563 | card_res->count_encoders = encoder_count; | |
564 | ||
565 | /* Connectors */ | |
566 | if (card_res->count_connectors >= connector_count) { | |
567 | copied = 0; | |
568 | connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; | |
9c7060f7 | 569 | drm_for_each_connector(connector, dev) { |
9c7060f7 DV |
570 | if (put_user(connector->base.id, |
571 | connector_id + copied)) { | |
572 | ret = -EFAULT; | |
573 | goto out; | |
f453ba04 | 574 | } |
9c7060f7 | 575 | copied++; |
f453ba04 DA |
576 | } |
577 | } | |
578 | card_res->count_connectors = connector_count; | |
579 | ||
f453ba04 | 580 | out: |
fcf93f69 | 581 | mutex_unlock(&dev->mode_config.mutex); |
f453ba04 DA |
582 | return ret; |
583 | } | |
584 | ||
585 | /** | |
586 | * drm_mode_getcrtc - get CRTC configuration | |
065a50ed DV |
587 | * @dev: drm device for the ioctl |
588 | * @data: data pointer for the ioctl | |
589 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 590 | * |
f453ba04 DA |
591 | * Construct a CRTC configuration structure to return to the user. |
592 | * | |
593 | * Called by the user via ioctl. | |
594 | * | |
c8e32cc1 | 595 | * Returns: |
1a498633 | 596 | * Zero on success, negative errno on failure. |
f453ba04 DA |
597 | */ |
598 | int drm_mode_getcrtc(struct drm_device *dev, | |
599 | void *data, struct drm_file *file_priv) | |
600 | { | |
601 | struct drm_mode_crtc *crtc_resp = data; | |
602 | struct drm_crtc *crtc; | |
f453ba04 | 603 | |
fb3b06c8 DA |
604 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
605 | return -EINVAL; | |
606 | ||
a2b34e22 | 607 | crtc = drm_crtc_find(dev, crtc_resp->crtc_id); |
fcf93f69 DV |
608 | if (!crtc) |
609 | return -ENOENT; | |
f453ba04 | 610 | |
fcf93f69 | 611 | drm_modeset_lock_crtc(crtc, crtc->primary); |
f453ba04 | 612 | crtc_resp->gamma_size = crtc->gamma_size; |
f4510a27 MR |
613 | if (crtc->primary->fb) |
614 | crtc_resp->fb_id = crtc->primary->fb->base.id; | |
f453ba04 DA |
615 | else |
616 | crtc_resp->fb_id = 0; | |
617 | ||
31c946e8 DV |
618 | if (crtc->state) { |
619 | crtc_resp->x = crtc->primary->state->src_x >> 16; | |
620 | crtc_resp->y = crtc->primary->state->src_y >> 16; | |
621 | if (crtc->state->enable) { | |
934a8a89 | 622 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode); |
31c946e8 | 623 | crtc_resp->mode_valid = 1; |
f453ba04 | 624 | |
31c946e8 DV |
625 | } else { |
626 | crtc_resp->mode_valid = 0; | |
627 | } | |
f453ba04 | 628 | } else { |
31c946e8 DV |
629 | crtc_resp->x = crtc->x; |
630 | crtc_resp->y = crtc->y; | |
631 | if (crtc->enabled) { | |
934a8a89 | 632 | drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode); |
31c946e8 DV |
633 | crtc_resp->mode_valid = 1; |
634 | ||
635 | } else { | |
636 | crtc_resp->mode_valid = 0; | |
637 | } | |
f453ba04 | 638 | } |
fcf93f69 | 639 | drm_modeset_unlock_crtc(crtc); |
f453ba04 | 640 | |
baf698b0 | 641 | return 0; |
f453ba04 DA |
642 | } |
643 | ||
2d13b679 DV |
644 | /** |
645 | * drm_mode_set_config_internal - helper to call ->set_config | |
646 | * @set: modeset config to set | |
647 | * | |
648 | * This is a little helper to wrap internal calls to the ->set_config driver | |
649 | * interface. The only thing it adds is correct refcounting dance. | |
4dfd909f | 650 | * |
c8e32cc1 | 651 | * Returns: |
1a498633 | 652 | * Zero on success, negative errno on failure. |
2d13b679 DV |
653 | */ |
654 | int drm_mode_set_config_internal(struct drm_mode_set *set) | |
655 | { | |
656 | struct drm_crtc *crtc = set->crtc; | |
5cef29aa DV |
657 | struct drm_framebuffer *fb; |
658 | struct drm_crtc *tmp; | |
b0d12325 DV |
659 | int ret; |
660 | ||
5cef29aa DV |
661 | /* |
662 | * NOTE: ->set_config can also disable other crtcs (if we steal all | |
663 | * connectors from it), hence we need to refcount the fbs across all | |
664 | * crtcs. Atomic modeset will have saner semantics ... | |
665 | */ | |
e4f62546 | 666 | drm_for_each_crtc(tmp, crtc->dev) |
3d30a59b | 667 | tmp->primary->old_fb = tmp->primary->fb; |
5cef29aa | 668 | |
b0d12325 | 669 | fb = set->fb; |
2d13b679 | 670 | |
b0d12325 DV |
671 | ret = crtc->funcs->set_config(set); |
672 | if (ret == 0) { | |
e13161af | 673 | crtc->primary->crtc = crtc; |
0fe27f06 | 674 | crtc->primary->fb = fb; |
5cef29aa | 675 | } |
cc85e121 | 676 | |
e4f62546 | 677 | drm_for_each_crtc(tmp, crtc->dev) { |
f4510a27 MR |
678 | if (tmp->primary->fb) |
679 | drm_framebuffer_reference(tmp->primary->fb); | |
3d30a59b DV |
680 | if (tmp->primary->old_fb) |
681 | drm_framebuffer_unreference(tmp->primary->old_fb); | |
682 | tmp->primary->old_fb = NULL; | |
b0d12325 DV |
683 | } |
684 | ||
685 | return ret; | |
2d13b679 DV |
686 | } |
687 | EXPORT_SYMBOL(drm_mode_set_config_internal); | |
688 | ||
ecb7e16b GP |
689 | /** |
690 | * drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode | |
691 | * @mode: mode to query | |
692 | * @hdisplay: hdisplay value to fill in | |
693 | * @vdisplay: vdisplay value to fill in | |
694 | * | |
695 | * The vdisplay value will be doubled if the specified mode is a stereo mode of | |
696 | * the appropriate layout. | |
697 | */ | |
698 | void drm_crtc_get_hv_timing(const struct drm_display_mode *mode, | |
699 | int *hdisplay, int *vdisplay) | |
700 | { | |
701 | struct drm_display_mode adjusted; | |
702 | ||
703 | drm_mode_copy(&adjusted, mode); | |
704 | drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY); | |
705 | *hdisplay = adjusted.crtc_hdisplay; | |
706 | *vdisplay = adjusted.crtc_vdisplay; | |
707 | } | |
708 | EXPORT_SYMBOL(drm_crtc_get_hv_timing); | |
709 | ||
af93629d MR |
710 | /** |
711 | * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the | |
712 | * CRTC viewport | |
713 | * @crtc: CRTC that framebuffer will be displayed on | |
714 | * @x: x panning | |
715 | * @y: y panning | |
716 | * @mode: mode that framebuffer will be displayed under | |
717 | * @fb: framebuffer to check size of | |
c11e9283 | 718 | */ |
af93629d MR |
719 | int drm_crtc_check_viewport(const struct drm_crtc *crtc, |
720 | int x, int y, | |
721 | const struct drm_display_mode *mode, | |
722 | const struct drm_framebuffer *fb) | |
c11e9283 DL |
723 | |
724 | { | |
725 | int hdisplay, vdisplay; | |
726 | ||
ecb7e16b | 727 | drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay); |
a0c1bbb0 | 728 | |
33e0be63 | 729 | if (crtc->state && |
31ad61e4 JL |
730 | crtc->primary->state->rotation & (DRM_ROTATE_90 | |
731 | DRM_ROTATE_270)) | |
c11e9283 DL |
732 | swap(hdisplay, vdisplay); |
733 | ||
43968d7b DV |
734 | return drm_framebuffer_check_src_coords(x << 16, y << 16, |
735 | hdisplay << 16, vdisplay << 16, | |
736 | fb); | |
c11e9283 | 737 | } |
af93629d | 738 | EXPORT_SYMBOL(drm_crtc_check_viewport); |
c11e9283 | 739 | |
f453ba04 DA |
740 | /** |
741 | * drm_mode_setcrtc - set CRTC configuration | |
065a50ed DV |
742 | * @dev: drm device for the ioctl |
743 | * @data: data pointer for the ioctl | |
744 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 745 | * |
f453ba04 DA |
746 | * Build a new CRTC configuration based on user request. |
747 | * | |
748 | * Called by the user via ioctl. | |
749 | * | |
c8e32cc1 | 750 | * Returns: |
1a498633 | 751 | * Zero on success, negative errno on failure. |
f453ba04 DA |
752 | */ |
753 | int drm_mode_setcrtc(struct drm_device *dev, void *data, | |
754 | struct drm_file *file_priv) | |
755 | { | |
756 | struct drm_mode_config *config = &dev->mode_config; | |
757 | struct drm_mode_crtc *crtc_req = data; | |
6653cc8d | 758 | struct drm_crtc *crtc; |
f453ba04 DA |
759 | struct drm_connector **connector_set = NULL, *connector; |
760 | struct drm_framebuffer *fb = NULL; | |
761 | struct drm_display_mode *mode = NULL; | |
762 | struct drm_mode_set set; | |
763 | uint32_t __user *set_connectors_ptr; | |
4a1b0714 | 764 | int ret; |
f453ba04 DA |
765 | int i; |
766 | ||
fb3b06c8 DA |
767 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
768 | return -EINVAL; | |
769 | ||
01447e9f ZJ |
770 | /* |
771 | * Universal plane src offsets are only 16.16, prevent havoc for | |
772 | * drivers using universal plane code internally. | |
773 | */ | |
774 | if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000) | |
1d97e915 VS |
775 | return -ERANGE; |
776 | ||
84849903 | 777 | drm_modeset_lock_all(dev); |
a2b34e22 RC |
778 | crtc = drm_crtc_find(dev, crtc_req->crtc_id); |
779 | if (!crtc) { | |
58367ed6 | 780 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); |
f27657f2 | 781 | ret = -ENOENT; |
f453ba04 DA |
782 | goto out; |
783 | } | |
fa3ab4c2 | 784 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); |
f453ba04 DA |
785 | |
786 | if (crtc_req->mode_valid) { | |
787 | /* If we have a mode we need a framebuffer. */ | |
788 | /* If we pass -1, set the mode with the currently bound fb */ | |
789 | if (crtc_req->fb_id == -1) { | |
f4510a27 | 790 | if (!crtc->primary->fb) { |
6653cc8d VS |
791 | DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); |
792 | ret = -EINVAL; | |
793 | goto out; | |
f453ba04 | 794 | } |
f4510a27 | 795 | fb = crtc->primary->fb; |
b0d12325 DV |
796 | /* Make refcounting symmetric with the lookup path. */ |
797 | drm_framebuffer_reference(fb); | |
f453ba04 | 798 | } else { |
786b99ed DV |
799 | fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); |
800 | if (!fb) { | |
58367ed6 ZY |
801 | DRM_DEBUG_KMS("Unknown FB ID%d\n", |
802 | crtc_req->fb_id); | |
37c4e705 | 803 | ret = -ENOENT; |
f453ba04 DA |
804 | goto out; |
805 | } | |
f453ba04 DA |
806 | } |
807 | ||
808 | mode = drm_mode_create(dev); | |
ee34ab5b VS |
809 | if (!mode) { |
810 | ret = -ENOMEM; | |
811 | goto out; | |
812 | } | |
813 | ||
934a8a89 | 814 | ret = drm_mode_convert_umode(mode, &crtc_req->mode); |
90367bf6 VS |
815 | if (ret) { |
816 | DRM_DEBUG_KMS("Invalid mode\n"); | |
817 | goto out; | |
818 | } | |
819 | ||
7eb5f302 LP |
820 | /* |
821 | * Check whether the primary plane supports the fb pixel format. | |
822 | * Drivers not implementing the universal planes API use a | |
823 | * default formats list provided by the DRM core which doesn't | |
824 | * match real hardware capabilities. Skip the check in that | |
825 | * case. | |
826 | */ | |
827 | if (!crtc->primary->format_default) { | |
828 | ret = drm_plane_check_pixel_format(crtc->primary, | |
829 | fb->pixel_format); | |
830 | if (ret) { | |
d3828147 | 831 | char *format_name = drm_get_format_name(fb->pixel_format); |
90844f00 EE |
832 | DRM_DEBUG_KMS("Invalid pixel format %s\n", format_name); |
833 | kfree(format_name); | |
7eb5f302 LP |
834 | goto out; |
835 | } | |
836 | } | |
837 | ||
c11e9283 DL |
838 | ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, |
839 | mode, fb); | |
840 | if (ret) | |
5f61bb42 | 841 | goto out; |
c11e9283 | 842 | |
f453ba04 DA |
843 | } |
844 | ||
845 | if (crtc_req->count_connectors == 0 && mode) { | |
58367ed6 | 846 | DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); |
f453ba04 DA |
847 | ret = -EINVAL; |
848 | goto out; | |
849 | } | |
850 | ||
7781de74 | 851 | if (crtc_req->count_connectors > 0 && (!mode || !fb)) { |
58367ed6 | 852 | DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", |
f453ba04 DA |
853 | crtc_req->count_connectors); |
854 | ret = -EINVAL; | |
855 | goto out; | |
856 | } | |
857 | ||
858 | if (crtc_req->count_connectors > 0) { | |
859 | u32 out_id; | |
860 | ||
861 | /* Avoid unbounded kernel memory allocation */ | |
862 | if (crtc_req->count_connectors > config->num_connector) { | |
863 | ret = -EINVAL; | |
864 | goto out; | |
865 | } | |
866 | ||
2f6c5389 TR |
867 | connector_set = kmalloc_array(crtc_req->count_connectors, |
868 | sizeof(struct drm_connector *), | |
869 | GFP_KERNEL); | |
f453ba04 DA |
870 | if (!connector_set) { |
871 | ret = -ENOMEM; | |
872 | goto out; | |
873 | } | |
874 | ||
875 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
b164d31f | 876 | connector_set[i] = NULL; |
81f6c7f8 | 877 | set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; |
f453ba04 DA |
878 | if (get_user(out_id, &set_connectors_ptr[i])) { |
879 | ret = -EFAULT; | |
880 | goto out; | |
881 | } | |
882 | ||
b164d31f | 883 | connector = drm_connector_lookup(dev, out_id); |
a2b34e22 | 884 | if (!connector) { |
58367ed6 ZY |
885 | DRM_DEBUG_KMS("Connector id %d unknown\n", |
886 | out_id); | |
f27657f2 | 887 | ret = -ENOENT; |
f453ba04 DA |
888 | goto out; |
889 | } | |
9440106b JG |
890 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
891 | connector->base.id, | |
25933820 | 892 | connector->name); |
f453ba04 DA |
893 | |
894 | connector_set[i] = connector; | |
895 | } | |
896 | } | |
897 | ||
898 | set.crtc = crtc; | |
899 | set.x = crtc_req->x; | |
900 | set.y = crtc_req->y; | |
901 | set.mode = mode; | |
902 | set.connectors = connector_set; | |
903 | set.num_connectors = crtc_req->count_connectors; | |
5ef5f72f | 904 | set.fb = fb; |
2d13b679 | 905 | ret = drm_mode_set_config_internal(&set); |
f453ba04 DA |
906 | |
907 | out: | |
b0d12325 DV |
908 | if (fb) |
909 | drm_framebuffer_unreference(fb); | |
910 | ||
b164d31f DA |
911 | if (connector_set) { |
912 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
913 | if (connector_set[i]) | |
914 | drm_connector_unreference(connector_set[i]); | |
915 | } | |
916 | } | |
f453ba04 | 917 | kfree(connector_set); |
ee34ab5b | 918 | drm_mode_destroy(dev, mode); |
84849903 | 919 | drm_modeset_unlock_all(dev); |
f453ba04 DA |
920 | return ret; |
921 | } | |
922 | ||
949619f3 DV |
923 | int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, |
924 | struct drm_property *property, | |
925 | uint64_t value) | |
4a67d391 | 926 | { |
bffd9de0 PZ |
927 | int ret = -EINVAL; |
928 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
4a67d391 | 929 | |
bffd9de0 PZ |
930 | if (crtc->funcs->set_property) |
931 | ret = crtc->funcs->set_property(crtc, property, value); | |
932 | if (!ret) | |
933 | drm_object_property_set_value(obj, property, value); | |
4a67d391 | 934 | |
bffd9de0 | 935 | return ret; |
4a67d391 | 936 | } |
4a67d391 | 937 | |
c8e32cc1 DV |
938 | /** |
939 | * drm_mode_config_reset - call ->reset callbacks | |
940 | * @dev: drm device | |
941 | * | |
942 | * This functions calls all the crtc's, encoder's and connector's ->reset | |
943 | * callback. Drivers can use this in e.g. their driver load or resume code to | |
944 | * reset hardware and software state. | |
945 | */ | |
eb033556 CW |
946 | void drm_mode_config_reset(struct drm_device *dev) |
947 | { | |
948 | struct drm_crtc *crtc; | |
2a0d7cfd | 949 | struct drm_plane *plane; |
eb033556 CW |
950 | struct drm_encoder *encoder; |
951 | struct drm_connector *connector; | |
952 | ||
e4f62546 | 953 | drm_for_each_plane(plane, dev) |
2a0d7cfd DV |
954 | if (plane->funcs->reset) |
955 | plane->funcs->reset(plane); | |
956 | ||
e4f62546 | 957 | drm_for_each_crtc(crtc, dev) |
eb033556 CW |
958 | if (crtc->funcs->reset) |
959 | crtc->funcs->reset(crtc); | |
960 | ||
e4f62546 | 961 | drm_for_each_encoder(encoder, dev) |
eb033556 CW |
962 | if (encoder->funcs->reset) |
963 | encoder->funcs->reset(encoder); | |
964 | ||
f8c2ba31 | 965 | mutex_lock(&dev->mode_config.mutex); |
4eebf60b | 966 | drm_for_each_connector(connector, dev) |
eb033556 CW |
967 | if (connector->funcs->reset) |
968 | connector->funcs->reset(connector); | |
f8c2ba31 | 969 | mutex_unlock(&dev->mode_config.mutex); |
eb033556 CW |
970 | } |
971 | EXPORT_SYMBOL(drm_mode_config_reset); | |
ff72145b | 972 | |
c8e32cc1 DV |
973 | /** |
974 | * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer | |
975 | * @dev: DRM device | |
976 | * @data: ioctl data | |
977 | * @file_priv: DRM file info | |
978 | * | |
979 | * This creates a new dumb buffer in the driver's backing storage manager (GEM, | |
980 | * TTM or something else entirely) and returns the resulting buffer handle. This | |
981 | * handle can then be wrapped up into a framebuffer modeset object. | |
982 | * | |
983 | * Note that userspace is not allowed to use such objects for render | |
984 | * acceleration - drivers must create their own private ioctls for such a use | |
985 | * case. | |
986 | * | |
987 | * Called by the user via ioctl. | |
988 | * | |
989 | * Returns: | |
1a498633 | 990 | * Zero on success, negative errno on failure. |
c8e32cc1 | 991 | */ |
ff72145b DA |
992 | int drm_mode_create_dumb_ioctl(struct drm_device *dev, |
993 | void *data, struct drm_file *file_priv) | |
994 | { | |
995 | struct drm_mode_create_dumb *args = data; | |
b28cd41f | 996 | u32 cpp, stride, size; |
ff72145b DA |
997 | |
998 | if (!dev->driver->dumb_create) | |
999 | return -ENOSYS; | |
b28cd41f DH |
1000 | if (!args->width || !args->height || !args->bpp) |
1001 | return -EINVAL; | |
1002 | ||
1003 | /* overflow checks for 32bit size calculations */ | |
00e72089 | 1004 | /* NOTE: DIV_ROUND_UP() can overflow */ |
b28cd41f | 1005 | cpp = DIV_ROUND_UP(args->bpp, 8); |
00e72089 | 1006 | if (!cpp || cpp > 0xffffffffU / args->width) |
b28cd41f DH |
1007 | return -EINVAL; |
1008 | stride = cpp * args->width; | |
1009 | if (args->height > 0xffffffffU / stride) | |
1010 | return -EINVAL; | |
1011 | ||
1012 | /* test for wrap-around */ | |
1013 | size = args->height * stride; | |
1014 | if (PAGE_ALIGN(size) == 0) | |
1015 | return -EINVAL; | |
1016 | ||
f6085952 TR |
1017 | /* |
1018 | * handle, pitch and size are output parameters. Zero them out to | |
1019 | * prevent drivers from accidentally using uninitialized data. Since | |
1020 | * not all existing userspace is clearing these fields properly we | |
1021 | * cannot reject IOCTL with garbage in them. | |
1022 | */ | |
1023 | args->handle = 0; | |
1024 | args->pitch = 0; | |
1025 | args->size = 0; | |
1026 | ||
ff72145b DA |
1027 | return dev->driver->dumb_create(file_priv, dev, args); |
1028 | } | |
1029 | ||
c8e32cc1 DV |
1030 | /** |
1031 | * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer | |
1032 | * @dev: DRM device | |
1033 | * @data: ioctl data | |
1034 | * @file_priv: DRM file info | |
1035 | * | |
1036 | * Allocate an offset in the drm device node's address space to be able to | |
1037 | * memory map a dumb buffer. | |
1038 | * | |
1039 | * Called by the user via ioctl. | |
1040 | * | |
1041 | * Returns: | |
1a498633 | 1042 | * Zero on success, negative errno on failure. |
c8e32cc1 | 1043 | */ |
ff72145b DA |
1044 | int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, |
1045 | void *data, struct drm_file *file_priv) | |
1046 | { | |
1047 | struct drm_mode_map_dumb *args = data; | |
1048 | ||
1049 | /* call driver ioctl to get mmap offset */ | |
1050 | if (!dev->driver->dumb_map_offset) | |
1051 | return -ENOSYS; | |
1052 | ||
1053 | return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); | |
1054 | } | |
1055 | ||
c8e32cc1 DV |
1056 | /** |
1057 | * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer | |
1058 | * @dev: DRM device | |
1059 | * @data: ioctl data | |
1060 | * @file_priv: DRM file info | |
1061 | * | |
1062 | * This destroys the userspace handle for the given dumb backing storage buffer. | |
1063 | * Since buffer objects must be reference counted in the kernel a buffer object | |
1064 | * won't be immediately freed if a framebuffer modeset object still uses it. | |
1065 | * | |
1066 | * Called by the user via ioctl. | |
1067 | * | |
1068 | * Returns: | |
1a498633 | 1069 | * Zero on success, negative errno on failure. |
c8e32cc1 | 1070 | */ |
ff72145b DA |
1071 | int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, |
1072 | void *data, struct drm_file *file_priv) | |
1073 | { | |
1074 | struct drm_mode_destroy_dumb *args = data; | |
1075 | ||
1076 | if (!dev->driver->dumb_destroy) | |
1077 | return -ENOSYS; | |
1078 | ||
1079 | return dev->driver->dumb_destroy(file_priv, dev, args->handle); | |
1080 | } | |
248dbc23 | 1081 | |
87d24fc3 LP |
1082 | /** |
1083 | * drm_mode_config_init - initialize DRM mode_configuration structure | |
1084 | * @dev: DRM device | |
1085 | * | |
1086 | * Initialize @dev's mode_config structure, used for tracking the graphics | |
1087 | * configuration of @dev. | |
1088 | * | |
1089 | * Since this initializes the modeset locks, no locking is possible. Which is no | |
1090 | * problem, since this should happen single threaded at init time. It is the | |
1091 | * driver's problem to ensure this guarantee. | |
1092 | * | |
1093 | */ | |
1094 | void drm_mode_config_init(struct drm_device *dev) | |
1095 | { | |
1096 | mutex_init(&dev->mode_config.mutex); | |
51fd371b | 1097 | drm_modeset_lock_init(&dev->mode_config.connection_mutex); |
87d24fc3 LP |
1098 | mutex_init(&dev->mode_config.idr_mutex); |
1099 | mutex_init(&dev->mode_config.fb_lock); | |
8fb6e7a5 | 1100 | mutex_init(&dev->mode_config.blob_lock); |
87d24fc3 LP |
1101 | INIT_LIST_HEAD(&dev->mode_config.fb_list); |
1102 | INIT_LIST_HEAD(&dev->mode_config.crtc_list); | |
1103 | INIT_LIST_HEAD(&dev->mode_config.connector_list); | |
1104 | INIT_LIST_HEAD(&dev->mode_config.encoder_list); | |
1105 | INIT_LIST_HEAD(&dev->mode_config.property_list); | |
1106 | INIT_LIST_HEAD(&dev->mode_config.property_blob_list); | |
1107 | INIT_LIST_HEAD(&dev->mode_config.plane_list); | |
1108 | idr_init(&dev->mode_config.crtc_idr); | |
138f9ebb | 1109 | idr_init(&dev->mode_config.tile_idr); |
5fff80bb | 1110 | ida_init(&dev->mode_config.connector_ida); |
87d24fc3 LP |
1111 | |
1112 | drm_modeset_lock_all(dev); | |
6b4959f4 | 1113 | drm_mode_create_standard_properties(dev); |
87d24fc3 LP |
1114 | drm_modeset_unlock_all(dev); |
1115 | ||
1116 | /* Just to be sure */ | |
1117 | dev->mode_config.num_fb = 0; | |
1118 | dev->mode_config.num_connector = 0; | |
1119 | dev->mode_config.num_crtc = 0; | |
1120 | dev->mode_config.num_encoder = 0; | |
e27dde3e MR |
1121 | dev->mode_config.num_overlay_plane = 0; |
1122 | dev->mode_config.num_total_plane = 0; | |
87d24fc3 LP |
1123 | } |
1124 | EXPORT_SYMBOL(drm_mode_config_init); | |
1125 | ||
1126 | /** | |
1127 | * drm_mode_config_cleanup - free up DRM mode_config info | |
1128 | * @dev: DRM device | |
1129 | * | |
1130 | * Free up all the connectors and CRTCs associated with this DRM device, then | |
1131 | * free up the framebuffers and associated buffer objects. | |
1132 | * | |
1133 | * Note that since this /should/ happen single-threaded at driver/device | |
1134 | * teardown time, no locking is required. It's the driver's job to ensure that | |
1135 | * this guarantee actually holds true. | |
1136 | * | |
1137 | * FIXME: cleanup any dangling user buffer objects too | |
1138 | */ | |
1139 | void drm_mode_config_cleanup(struct drm_device *dev) | |
1140 | { | |
1141 | struct drm_connector *connector, *ot; | |
1142 | struct drm_crtc *crtc, *ct; | |
1143 | struct drm_encoder *encoder, *enct; | |
1144 | struct drm_framebuffer *fb, *fbt; | |
1145 | struct drm_property *property, *pt; | |
1146 | struct drm_property_blob *blob, *bt; | |
1147 | struct drm_plane *plane, *plt; | |
1148 | ||
1149 | list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, | |
1150 | head) { | |
1151 | encoder->funcs->destroy(encoder); | |
1152 | } | |
1153 | ||
1154 | list_for_each_entry_safe(connector, ot, | |
1155 | &dev->mode_config.connector_list, head) { | |
1156 | connector->funcs->destroy(connector); | |
1157 | } | |
1158 | ||
1159 | list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, | |
1160 | head) { | |
1161 | drm_property_destroy(dev, property); | |
1162 | } | |
1163 | ||
f35034f8 ML |
1164 | list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, |
1165 | head) { | |
1166 | plane->funcs->destroy(plane); | |
1167 | } | |
1168 | ||
1169 | list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { | |
1170 | crtc->funcs->destroy(crtc); | |
1171 | } | |
1172 | ||
87d24fc3 | 1173 | list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, |
e2f5d2ea | 1174 | head_global) { |
6bcacf51 | 1175 | drm_property_unreference_blob(blob); |
87d24fc3 LP |
1176 | } |
1177 | ||
1178 | /* | |
1179 | * Single-threaded teardown context, so it's not required to grab the | |
1180 | * fb_lock to protect against concurrent fb_list access. Contrary, it | |
1181 | * would actually deadlock with the drm_framebuffer_cleanup function. | |
1182 | * | |
1183 | * Also, if there are any framebuffers left, that's a driver leak now, | |
1184 | * so politely WARN about this. | |
1185 | */ | |
1186 | WARN_ON(!list_empty(&dev->mode_config.fb_list)); | |
1187 | list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { | |
d0f37cf6 | 1188 | drm_framebuffer_free(&fb->base.refcount); |
87d24fc3 LP |
1189 | } |
1190 | ||
5fff80bb | 1191 | ida_destroy(&dev->mode_config.connector_ida); |
138f9ebb | 1192 | idr_destroy(&dev->mode_config.tile_idr); |
87d24fc3 | 1193 | idr_destroy(&dev->mode_config.crtc_idr); |
51fd371b | 1194 | drm_modeset_lock_fini(&dev->mode_config.connection_mutex); |
87d24fc3 LP |
1195 | } |
1196 | EXPORT_SYMBOL(drm_mode_config_cleanup); | |
c1df5f3c | 1197 | |
138f9ebb DA |
1198 | /** |
1199 | * DOC: Tile group | |
1200 | * | |
1201 | * Tile groups are used to represent tiled monitors with a unique | |
1202 | * integer identifier. Tiled monitors using DisplayID v1.3 have | |
1203 | * a unique 8-byte handle, we store this in a tile group, so we | |
1204 | * have a common identifier for all tiles in a monitor group. | |
1205 | */ | |
1206 | static void drm_tile_group_free(struct kref *kref) | |
1207 | { | |
1208 | struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount); | |
1209 | struct drm_device *dev = tg->dev; | |
1210 | mutex_lock(&dev->mode_config.idr_mutex); | |
1211 | idr_remove(&dev->mode_config.tile_idr, tg->id); | |
1212 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1213 | kfree(tg); | |
1214 | } | |
1215 | ||
1216 | /** | |
1217 | * drm_mode_put_tile_group - drop a reference to a tile group. | |
1218 | * @dev: DRM device | |
1219 | * @tg: tile group to drop reference to. | |
1220 | * | |
1221 | * drop reference to tile group and free if 0. | |
1222 | */ | |
1223 | void drm_mode_put_tile_group(struct drm_device *dev, | |
1224 | struct drm_tile_group *tg) | |
1225 | { | |
1226 | kref_put(&tg->refcount, drm_tile_group_free); | |
1227 | } | |
1228 | ||
1229 | /** | |
1230 | * drm_mode_get_tile_group - get a reference to an existing tile group | |
1231 | * @dev: DRM device | |
1232 | * @topology: 8-bytes unique per monitor. | |
1233 | * | |
1234 | * Use the unique bytes to get a reference to an existing tile group. | |
1235 | * | |
1236 | * RETURNS: | |
1237 | * tile group or NULL if not found. | |
1238 | */ | |
1239 | struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, | |
1240 | char topology[8]) | |
1241 | { | |
1242 | struct drm_tile_group *tg; | |
1243 | int id; | |
1244 | mutex_lock(&dev->mode_config.idr_mutex); | |
1245 | idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) { | |
1246 | if (!memcmp(tg->group_data, topology, 8)) { | |
1247 | if (!kref_get_unless_zero(&tg->refcount)) | |
1248 | tg = NULL; | |
1249 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1250 | return tg; | |
1251 | } | |
1252 | } | |
1253 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1254 | return NULL; | |
1255 | } | |
81ddd1bc | 1256 | EXPORT_SYMBOL(drm_mode_get_tile_group); |
138f9ebb DA |
1257 | |
1258 | /** | |
1259 | * drm_mode_create_tile_group - create a tile group from a displayid description | |
1260 | * @dev: DRM device | |
1261 | * @topology: 8-bytes unique per monitor. | |
1262 | * | |
1263 | * Create a tile group for the unique monitor, and get a unique | |
1264 | * identifier for the tile group. | |
1265 | * | |
1266 | * RETURNS: | |
1267 | * new tile group or error. | |
1268 | */ | |
1269 | struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, | |
1270 | char topology[8]) | |
1271 | { | |
1272 | struct drm_tile_group *tg; | |
1273 | int ret; | |
1274 | ||
1275 | tg = kzalloc(sizeof(*tg), GFP_KERNEL); | |
1276 | if (!tg) | |
1277 | return ERR_PTR(-ENOMEM); | |
1278 | ||
1279 | kref_init(&tg->refcount); | |
1280 | memcpy(tg->group_data, topology, 8); | |
1281 | tg->dev = dev; | |
1282 | ||
1283 | mutex_lock(&dev->mode_config.idr_mutex); | |
1284 | ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL); | |
1285 | if (ret >= 0) { | |
1286 | tg->id = ret; | |
1287 | } else { | |
1288 | kfree(tg); | |
1289 | tg = ERR_PTR(ret); | |
1290 | } | |
1291 | ||
1292 | mutex_unlock(&dev->mode_config.idr_mutex); | |
1293 | return tg; | |
1294 | } | |
81ddd1bc | 1295 | EXPORT_SYMBOL(drm_mode_create_tile_group); |