1 /* 2 * Copyright (c) 2016 Intel Corporation 3 * 4 * Permission to use, copy, modify, distribute, and sell this software and its 5 * documentation for any purpose is hereby granted without fee, provided that 6 * the above copyright notice appear in all copies and that both that copyright 7 * notice and this permission notice appear in supporting documentation, and 8 * that the name of the copyright holders not be used in advertising or 9 * publicity pertaining to distribution of the software without specific, 10 * written prior permission. The copyright holders make no representations 11 * about the suitability of this software for any purpose. It is provided "as 12 * is" without express or implied warranty. 13 * 14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 20 * OF THIS SOFTWARE. 21 */ 22 23 #include <linux/uaccess.h> 24 25 #include <drm/drm_drv.h> 26 #include <drm/drm_encoder.h> 27 #include <drm/drm_file.h> 28 #include <drm/drm_framebuffer.h> 29 #include <drm/drm_managed.h> 30 #include <drm/drm_mode_config.h> 31 #include <drm/drm_print.h> 32 #include <linux/dma-resv.h> 33 34 #include "drm_crtc_internal.h" 35 #include "drm_internal.h" 36 37 int drm_modeset_register_all(struct drm_device *dev) 38 { 39 int ret; 40 41 ret = drm_plane_register_all(dev); 42 if (ret) 43 goto err_plane; 44 45 ret = drm_crtc_register_all(dev); 46 if (ret) 47 goto err_crtc; 48 49 ret = drm_encoder_register_all(dev); 50 if (ret) 51 goto err_encoder; 52 53 ret = drm_connector_register_all(dev); 54 if (ret) 55 goto err_connector; 56 57 return 0; 58 59 err_connector: 60 drm_encoder_unregister_all(dev); 61 err_encoder: 62 drm_crtc_unregister_all(dev); 63 err_crtc: 64 drm_plane_unregister_all(dev); 65 err_plane: 66 return ret; 67 } 68 69 void drm_modeset_unregister_all(struct drm_device *dev) 70 { 71 drm_connector_unregister_all(dev); 72 drm_encoder_unregister_all(dev); 73 drm_crtc_unregister_all(dev); 74 drm_plane_unregister_all(dev); 75 } 76 77 /** 78 * drm_mode_getresources - get graphics configuration 79 * @dev: drm device for the ioctl 80 * @data: data pointer for the ioctl 81 * @file_priv: drm file for the ioctl call 82 * 83 * Construct a set of configuration description structures and return 84 * them to the user, including CRTC, connector and framebuffer configuration. 85 * 86 * Called by the user via ioctl. 87 * 88 * Returns: 89 * Zero on success, negative errno on failure. 90 */ 91 int drm_mode_getresources(struct drm_device *dev, void *data, 92 struct drm_file *file_priv) 93 { 94 struct drm_mode_card_res *card_res = data; 95 struct drm_framebuffer *fb; 96 struct drm_connector *connector; 97 struct drm_crtc *crtc; 98 struct drm_encoder *encoder; 99 int count, ret = 0; 100 uint32_t __user *fb_id; 101 uint32_t __user *crtc_id; 102 uint32_t __user *connector_id; 103 uint32_t __user *encoder_id; 104 struct drm_connector_list_iter conn_iter; 105 106 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 107 return -EOPNOTSUPP; 108 109 mutex_lock(&file_priv->fbs_lock); 110 count = 0; 111 fb_id = u64_to_user_ptr(card_res->fb_id_ptr); 112 list_for_each_entry(fb, &file_priv->fbs, filp_head) { 113 if (count < card_res->count_fbs && 114 put_user(fb->base.id, fb_id + count)) { 115 mutex_unlock(&file_priv->fbs_lock); 116 return -EFAULT; 117 } 118 count++; 119 } 120 card_res->count_fbs = count; 121 mutex_unlock(&file_priv->fbs_lock); 122 123 card_res->max_height = dev->mode_config.max_height; 124 card_res->min_height = dev->mode_config.min_height; 125 card_res->max_width = dev->mode_config.max_width; 126 card_res->min_width = dev->mode_config.min_width; 127 128 count = 0; 129 crtc_id = u64_to_user_ptr(card_res->crtc_id_ptr); 130 drm_for_each_crtc(crtc, dev) { 131 if (drm_lease_held(file_priv, crtc->base.id)) { 132 if (count < card_res->count_crtcs && 133 put_user(crtc->base.id, crtc_id + count)) 134 return -EFAULT; 135 count++; 136 } 137 } 138 card_res->count_crtcs = count; 139 140 count = 0; 141 encoder_id = u64_to_user_ptr(card_res->encoder_id_ptr); 142 drm_for_each_encoder(encoder, dev) { 143 if (count < card_res->count_encoders && 144 put_user(encoder->base.id, encoder_id + count)) 145 return -EFAULT; 146 count++; 147 } 148 card_res->count_encoders = count; 149 150 drm_connector_list_iter_begin(dev, &conn_iter); 151 count = 0; 152 connector_id = u64_to_user_ptr(card_res->connector_id_ptr); 153 drm_for_each_connector_iter(connector, &conn_iter) { 154 if (connector->registration_state != DRM_CONNECTOR_REGISTERED) 155 continue; 156 157 /* only expose writeback connectors if userspace understands them */ 158 if (!file_priv->writeback_connectors && 159 (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)) 160 continue; 161 162 if (drm_lease_held(file_priv, connector->base.id)) { 163 if (count < card_res->count_connectors && 164 put_user(connector->base.id, connector_id + count)) { 165 drm_connector_list_iter_end(&conn_iter); 166 return -EFAULT; 167 } 168 count++; 169 } 170 } 171 card_res->count_connectors = count; 172 drm_connector_list_iter_end(&conn_iter); 173 174 return ret; 175 } 176 177 /** 178 * drm_mode_config_reset - call ->reset callbacks 179 * @dev: drm device 180 * 181 * This functions calls all the crtc's, encoder's and connector's ->reset 182 * callback. Drivers can use this in e.g. their driver load or resume code to 183 * reset hardware and software state. 184 */ 185 void drm_mode_config_reset(struct drm_device *dev) 186 { 187 struct drm_crtc *crtc; 188 struct drm_plane *plane; 189 struct drm_encoder *encoder; 190 struct drm_connector *connector; 191 struct drm_connector_list_iter conn_iter; 192 193 drm_for_each_plane(plane, dev) 194 if (plane->funcs->reset) 195 plane->funcs->reset(plane); 196 197 drm_for_each_crtc(crtc, dev) 198 if (crtc->funcs->reset) 199 crtc->funcs->reset(crtc); 200 201 drm_for_each_encoder(encoder, dev) 202 if (encoder->funcs && encoder->funcs->reset) 203 encoder->funcs->reset(encoder); 204 205 drm_connector_list_iter_begin(dev, &conn_iter); 206 drm_for_each_connector_iter(connector, &conn_iter) 207 if (connector->funcs->reset) 208 connector->funcs->reset(connector); 209 drm_connector_list_iter_end(&conn_iter); 210 } 211 EXPORT_SYMBOL(drm_mode_config_reset); 212 213 /* 214 * Global properties 215 */ 216 static const struct drm_prop_enum_list drm_plane_type_enum_list[] = { 217 { DRM_PLANE_TYPE_OVERLAY, "Overlay" }, 218 { DRM_PLANE_TYPE_PRIMARY, "Primary" }, 219 { DRM_PLANE_TYPE_CURSOR, "Cursor" }, 220 }; 221 222 static int drm_mode_create_standard_properties(struct drm_device *dev) 223 { 224 struct drm_property *prop; 225 int ret; 226 227 ret = drm_connector_create_standard_properties(dev); 228 if (ret) 229 return ret; 230 231 prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 232 "type", drm_plane_type_enum_list, 233 ARRAY_SIZE(drm_plane_type_enum_list)); 234 if (!prop) 235 return -ENOMEM; 236 dev->mode_config.plane_type_property = prop; 237 238 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, 239 "SRC_X", 0, UINT_MAX); 240 if (!prop) 241 return -ENOMEM; 242 dev->mode_config.prop_src_x = prop; 243 244 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, 245 "SRC_Y", 0, UINT_MAX); 246 if (!prop) 247 return -ENOMEM; 248 dev->mode_config.prop_src_y = prop; 249 250 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, 251 "SRC_W", 0, UINT_MAX); 252 if (!prop) 253 return -ENOMEM; 254 dev->mode_config.prop_src_w = prop; 255 256 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, 257 "SRC_H", 0, UINT_MAX); 258 if (!prop) 259 return -ENOMEM; 260 dev->mode_config.prop_src_h = prop; 261 262 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, 263 "CRTC_X", INT_MIN, INT_MAX); 264 if (!prop) 265 return -ENOMEM; 266 dev->mode_config.prop_crtc_x = prop; 267 268 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, 269 "CRTC_Y", INT_MIN, INT_MAX); 270 if (!prop) 271 return -ENOMEM; 272 dev->mode_config.prop_crtc_y = prop; 273 274 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, 275 "CRTC_W", 0, INT_MAX); 276 if (!prop) 277 return -ENOMEM; 278 dev->mode_config.prop_crtc_w = prop; 279 280 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, 281 "CRTC_H", 0, INT_MAX); 282 if (!prop) 283 return -ENOMEM; 284 dev->mode_config.prop_crtc_h = prop; 285 286 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC, 287 "FB_ID", DRM_MODE_OBJECT_FB); 288 if (!prop) 289 return -ENOMEM; 290 dev->mode_config.prop_fb_id = prop; 291 292 prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC, 293 "IN_FENCE_FD", -1, INT_MAX); 294 if (!prop) 295 return -ENOMEM; 296 dev->mode_config.prop_in_fence_fd = prop; 297 298 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, 299 "OUT_FENCE_PTR", 0, U64_MAX); 300 if (!prop) 301 return -ENOMEM; 302 dev->mode_config.prop_out_fence_ptr = prop; 303 304 prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC, 305 "CRTC_ID", DRM_MODE_OBJECT_CRTC); 306 if (!prop) 307 return -ENOMEM; 308 dev->mode_config.prop_crtc_id = prop; 309 310 prop = drm_property_create(dev, 311 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB, 312 "FB_DAMAGE_CLIPS", 0); 313 if (!prop) 314 return -ENOMEM; 315 dev->mode_config.prop_fb_damage_clips = prop; 316 317 prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC, 318 "ACTIVE"); 319 if (!prop) 320 return -ENOMEM; 321 dev->mode_config.prop_active = prop; 322 323 prop = drm_property_create(dev, 324 DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB, 325 "MODE_ID", 0); 326 if (!prop) 327 return -ENOMEM; 328 dev->mode_config.prop_mode_id = prop; 329 330 prop = drm_property_create_bool(dev, 0, 331 "VRR_ENABLED"); 332 if (!prop) 333 return -ENOMEM; 334 dev->mode_config.prop_vrr_enabled = prop; 335 336 prop = drm_property_create(dev, 337 DRM_MODE_PROP_BLOB, 338 "DEGAMMA_LUT", 0); 339 if (!prop) 340 return -ENOMEM; 341 dev->mode_config.degamma_lut_property = prop; 342 343 prop = drm_property_create_range(dev, 344 DRM_MODE_PROP_IMMUTABLE, 345 "DEGAMMA_LUT_SIZE", 0, UINT_MAX); 346 if (!prop) 347 return -ENOMEM; 348 dev->mode_config.degamma_lut_size_property = prop; 349 350 prop = drm_property_create(dev, 351 DRM_MODE_PROP_BLOB, 352 "CTM", 0); 353 if (!prop) 354 return -ENOMEM; 355 dev->mode_config.ctm_property = prop; 356 357 prop = drm_property_create(dev, 358 DRM_MODE_PROP_BLOB, 359 "GAMMA_LUT", 0); 360 if (!prop) 361 return -ENOMEM; 362 dev->mode_config.gamma_lut_property = prop; 363 364 prop = drm_property_create_range(dev, 365 DRM_MODE_PROP_IMMUTABLE, 366 "GAMMA_LUT_SIZE", 0, UINT_MAX); 367 if (!prop) 368 return -ENOMEM; 369 dev->mode_config.gamma_lut_size_property = prop; 370 371 prop = drm_property_create(dev, 372 DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_BLOB, 373 "IN_FORMATS", 0); 374 if (!prop) 375 return -ENOMEM; 376 dev->mode_config.modifiers_property = prop; 377 378 return 0; 379 } 380 381 static void drm_mode_config_init_release(struct drm_device *dev, void *ptr) 382 { 383 drm_mode_config_cleanup(dev); 384 } 385 386 /** 387 * drmm_mode_config_init - managed DRM mode_configuration structure 388 * initialization 389 * @dev: DRM device 390 * 391 * Initialize @dev's mode_config structure, used for tracking the graphics 392 * configuration of @dev. 393 * 394 * Since this initializes the modeset locks, no locking is possible. Which is no 395 * problem, since this should happen single threaded at init time. It is the 396 * driver's problem to ensure this guarantee. 397 * 398 * Cleanup is automatically handled through registering drm_mode_config_cleanup 399 * with drmm_add_action(). 400 * 401 * Returns: 0 on success, negative error value on failure. 402 */ 403 int drmm_mode_config_init(struct drm_device *dev) 404 { 405 mutex_init(&dev->mode_config.mutex); 406 drm_modeset_lock_init(&dev->mode_config.connection_mutex); 407 mutex_init(&dev->mode_config.idr_mutex); 408 mutex_init(&dev->mode_config.fb_lock); 409 mutex_init(&dev->mode_config.blob_lock); 410 INIT_LIST_HEAD(&dev->mode_config.fb_list); 411 INIT_LIST_HEAD(&dev->mode_config.crtc_list); 412 INIT_LIST_HEAD(&dev->mode_config.connector_list); 413 INIT_LIST_HEAD(&dev->mode_config.encoder_list); 414 INIT_LIST_HEAD(&dev->mode_config.property_list); 415 INIT_LIST_HEAD(&dev->mode_config.property_blob_list); 416 INIT_LIST_HEAD(&dev->mode_config.plane_list); 417 INIT_LIST_HEAD(&dev->mode_config.privobj_list); 418 idr_init_base(&dev->mode_config.object_idr, 1); 419 idr_init_base(&dev->mode_config.tile_idr, 1); 420 ida_init(&dev->mode_config.connector_ida); 421 spin_lock_init(&dev->mode_config.connector_list_lock); 422 423 init_llist_head(&dev->mode_config.connector_free_list); 424 INIT_WORK(&dev->mode_config.connector_free_work, drm_connector_free_work_fn); 425 426 drm_mode_create_standard_properties(dev); 427 428 /* Just to be sure */ 429 dev->mode_config.num_fb = 0; 430 dev->mode_config.num_connector = 0; 431 dev->mode_config.num_crtc = 0; 432 dev->mode_config.num_encoder = 0; 433 dev->mode_config.num_total_plane = 0; 434 435 if (IS_ENABLED(CONFIG_LOCKDEP)) { 436 struct drm_modeset_acquire_ctx modeset_ctx; 437 struct ww_acquire_ctx resv_ctx; 438 struct dma_resv resv; 439 int ret; 440 441 dma_resv_init(&resv); 442 443 drm_modeset_acquire_init(&modeset_ctx, 0); 444 ret = drm_modeset_lock(&dev->mode_config.connection_mutex, 445 &modeset_ctx); 446 if (ret == -EDEADLK) 447 ret = drm_modeset_backoff(&modeset_ctx); 448 449 ww_acquire_init(&resv_ctx, &reservation_ww_class); 450 ret = dma_resv_lock(&resv, &resv_ctx); 451 if (ret == -EDEADLK) 452 dma_resv_lock_slow(&resv, &resv_ctx); 453 454 dma_resv_unlock(&resv); 455 ww_acquire_fini(&resv_ctx); 456 457 drm_modeset_drop_locks(&modeset_ctx); 458 drm_modeset_acquire_fini(&modeset_ctx); 459 dma_resv_fini(&resv); 460 } 461 462 return drmm_add_action_or_reset(dev, drm_mode_config_init_release, 463 NULL); 464 } 465 EXPORT_SYMBOL(drmm_mode_config_init); 466 467 /** 468 * drm_mode_config_cleanup - free up DRM mode_config info 469 * @dev: DRM device 470 * 471 * Free up all the connectors and CRTCs associated with this DRM device, then 472 * free up the framebuffers and associated buffer objects. 473 * 474 * Note that since this /should/ happen single-threaded at driver/device 475 * teardown time, no locking is required. It's the driver's job to ensure that 476 * this guarantee actually holds true. 477 * 478 * FIXME: With the managed drmm_mode_config_init() it is no longer necessary for 479 * drivers to explicitly call this function. 480 */ 481 void drm_mode_config_cleanup(struct drm_device *dev) 482 { 483 struct drm_connector *connector; 484 struct drm_connector_list_iter conn_iter; 485 struct drm_crtc *crtc, *ct; 486 struct drm_encoder *encoder, *enct; 487 struct drm_framebuffer *fb, *fbt; 488 struct drm_property *property, *pt; 489 struct drm_property_blob *blob, *bt; 490 struct drm_plane *plane, *plt; 491 492 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, 493 head) { 494 encoder->funcs->destroy(encoder); 495 } 496 497 drm_connector_list_iter_begin(dev, &conn_iter); 498 drm_for_each_connector_iter(connector, &conn_iter) { 499 /* drm_connector_list_iter holds an full reference to the 500 * current connector itself, which means it is inherently safe 501 * against unreferencing the current connector - but not against 502 * deleting it right away. */ 503 drm_connector_put(connector); 504 } 505 drm_connector_list_iter_end(&conn_iter); 506 /* connector_iter drops references in a work item. */ 507 flush_work(&dev->mode_config.connector_free_work); 508 if (WARN_ON(!list_empty(&dev->mode_config.connector_list))) { 509 drm_connector_list_iter_begin(dev, &conn_iter); 510 drm_for_each_connector_iter(connector, &conn_iter) 511 DRM_ERROR("connector %s leaked!\n", connector->name); 512 drm_connector_list_iter_end(&conn_iter); 513 } 514 515 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, 516 head) { 517 drm_property_destroy(dev, property); 518 } 519 520 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, 521 head) { 522 plane->funcs->destroy(plane); 523 } 524 525 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { 526 crtc->funcs->destroy(crtc); 527 } 528 529 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, 530 head_global) { 531 drm_property_blob_put(blob); 532 } 533 534 /* 535 * Single-threaded teardown context, so it's not required to grab the 536 * fb_lock to protect against concurrent fb_list access. Contrary, it 537 * would actually deadlock with the drm_framebuffer_cleanup function. 538 * 539 * Also, if there are any framebuffers left, that's a driver leak now, 540 * so politely WARN about this. 541 */ 542 WARN_ON(!list_empty(&dev->mode_config.fb_list)); 543 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { 544 struct drm_printer p = drm_debug_printer("[leaked fb]"); 545 546 drm_printf(&p, "framebuffer[%u]:\n", fb->base.id); 547 drm_framebuffer_print_info(&p, 1, fb); 548 drm_framebuffer_free(&fb->base.refcount); 549 } 550 551 ida_destroy(&dev->mode_config.connector_ida); 552 idr_destroy(&dev->mode_config.tile_idr); 553 idr_destroy(&dev->mode_config.object_idr); 554 drm_modeset_lock_fini(&dev->mode_config.connection_mutex); 555 } 556 EXPORT_SYMBOL(drm_mode_config_cleanup); 557 558 static u32 full_encoder_mask(struct drm_device *dev) 559 { 560 struct drm_encoder *encoder; 561 u32 encoder_mask = 0; 562 563 drm_for_each_encoder(encoder, dev) 564 encoder_mask |= drm_encoder_mask(encoder); 565 566 return encoder_mask; 567 } 568 569 /* 570 * For some reason we want the encoder itself included in 571 * possible_clones. Make life easy for drivers by allowing them 572 * to leave possible_clones unset if no cloning is possible. 573 */ 574 static void fixup_encoder_possible_clones(struct drm_encoder *encoder) 575 { 576 if (encoder->possible_clones == 0) 577 encoder->possible_clones = drm_encoder_mask(encoder); 578 } 579 580 static void validate_encoder_possible_clones(struct drm_encoder *encoder) 581 { 582 struct drm_device *dev = encoder->dev; 583 u32 encoder_mask = full_encoder_mask(dev); 584 struct drm_encoder *other; 585 586 drm_for_each_encoder(other, dev) { 587 WARN(!!(encoder->possible_clones & drm_encoder_mask(other)) != 588 !!(other->possible_clones & drm_encoder_mask(encoder)), 589 "possible_clones mismatch: " 590 "[ENCODER:%d:%s] mask=0x%x possible_clones=0x%x vs. " 591 "[ENCODER:%d:%s] mask=0x%x possible_clones=0x%x\n", 592 encoder->base.id, encoder->name, 593 drm_encoder_mask(encoder), encoder->possible_clones, 594 other->base.id, other->name, 595 drm_encoder_mask(other), other->possible_clones); 596 } 597 598 WARN((encoder->possible_clones & drm_encoder_mask(encoder)) == 0 || 599 (encoder->possible_clones & ~encoder_mask) != 0, 600 "Bogus possible_clones: " 601 "[ENCODER:%d:%s] possible_clones=0x%x (full encoder mask=0x%x)\n", 602 encoder->base.id, encoder->name, 603 encoder->possible_clones, encoder_mask); 604 } 605 606 static u32 full_crtc_mask(struct drm_device *dev) 607 { 608 struct drm_crtc *crtc; 609 u32 crtc_mask = 0; 610 611 drm_for_each_crtc(crtc, dev) 612 crtc_mask |= drm_crtc_mask(crtc); 613 614 return crtc_mask; 615 } 616 617 static void validate_encoder_possible_crtcs(struct drm_encoder *encoder) 618 { 619 u32 crtc_mask = full_crtc_mask(encoder->dev); 620 621 WARN((encoder->possible_crtcs & crtc_mask) == 0 || 622 (encoder->possible_crtcs & ~crtc_mask) != 0, 623 "Bogus possible_crtcs: " 624 "[ENCODER:%d:%s] possible_crtcs=0x%x (full crtc mask=0x%x)\n", 625 encoder->base.id, encoder->name, 626 encoder->possible_crtcs, crtc_mask); 627 } 628 629 void drm_mode_config_validate(struct drm_device *dev) 630 { 631 struct drm_encoder *encoder; 632 struct drm_crtc *crtc; 633 struct drm_plane *plane; 634 u32 primary_with_crtc = 0, cursor_with_crtc = 0; 635 unsigned int num_primary = 0; 636 637 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 638 return; 639 640 drm_for_each_encoder(encoder, dev) 641 fixup_encoder_possible_clones(encoder); 642 643 drm_for_each_encoder(encoder, dev) { 644 validate_encoder_possible_clones(encoder); 645 validate_encoder_possible_crtcs(encoder); 646 } 647 648 drm_for_each_crtc(crtc, dev) { 649 WARN(!crtc->primary, "Missing primary plane on [CRTC:%d:%s]\n", 650 crtc->base.id, crtc->name); 651 652 WARN(crtc->cursor && crtc->funcs->cursor_set, 653 "[CRTC:%d:%s] must not have both a cursor plane and a cursor_set func", 654 crtc->base.id, crtc->name); 655 WARN(crtc->cursor && crtc->funcs->cursor_set2, 656 "[CRTC:%d:%s] must not have both a cursor plane and a cursor_set2 func", 657 crtc->base.id, crtc->name); 658 WARN(crtc->cursor && crtc->funcs->cursor_move, 659 "[CRTC:%d:%s] must not have both a cursor plane and a cursor_move func", 660 crtc->base.id, crtc->name); 661 662 if (crtc->primary) { 663 WARN(!(crtc->primary->possible_crtcs & drm_crtc_mask(crtc)), 664 "Bogus primary plane possible_crtcs: [PLANE:%d:%s] must be compatible with [CRTC:%d:%s]\n", 665 crtc->primary->base.id, crtc->primary->name, 666 crtc->base.id, crtc->name); 667 WARN(primary_with_crtc & drm_plane_mask(crtc->primary), 668 "Primary plane [PLANE:%d:%s] used for multiple CRTCs", 669 crtc->primary->base.id, crtc->primary->name); 670 primary_with_crtc |= drm_plane_mask(crtc->primary); 671 } 672 if (crtc->cursor) { 673 WARN(!(crtc->cursor->possible_crtcs & drm_crtc_mask(crtc)), 674 "Bogus cursor plane possible_crtcs: [PLANE:%d:%s] must be compatible with [CRTC:%d:%s]\n", 675 crtc->cursor->base.id, crtc->cursor->name, 676 crtc->base.id, crtc->name); 677 WARN(cursor_with_crtc & drm_plane_mask(crtc->cursor), 678 "Cursor plane [PLANE:%d:%s] used for multiple CRTCs", 679 crtc->cursor->base.id, crtc->cursor->name); 680 cursor_with_crtc |= drm_plane_mask(crtc->cursor); 681 } 682 } 683 684 drm_for_each_plane(plane, dev) { 685 if (plane->type == DRM_PLANE_TYPE_PRIMARY) 686 num_primary++; 687 } 688 689 WARN(num_primary != dev->mode_config.num_crtc, 690 "Must have as many primary planes as there are CRTCs, but have %u primary planes and %u CRTCs", 691 num_primary, dev->mode_config.num_crtc); 692 } 693