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