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