1 /* 2 * Copyright (c) 2006-2008 Intel Corporation 3 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> 4 * Copyright (c) 2008 Red Hat Inc. 5 * 6 * DRM core CRTC related functions 7 * 8 * Permission to use, copy, modify, distribute, and sell this software and its 9 * documentation for any purpose is hereby granted without fee, provided that 10 * the above copyright notice appear in all copies and that both that copyright 11 * notice and this permission notice appear in supporting documentation, and 12 * that the name of the copyright holders not be used in advertising or 13 * publicity pertaining to distribution of the software without specific, 14 * written prior permission. The copyright holders make no representations 15 * about the suitability of this software for any purpose. It is provided "as 16 * is" without express or implied warranty. 17 * 18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 24 * OF THIS SOFTWARE. 25 * 26 * Authors: 27 * Keith Packard 28 * Eric Anholt <eric@anholt.net> 29 * Dave Airlie <airlied@linux.ie> 30 * Jesse Barnes <jesse.barnes@intel.com> 31 */ 32 #include <linux/ctype.h> 33 #include <linux/list.h> 34 #include <linux/slab.h> 35 #include <linux/export.h> 36 #include <drm/drmP.h> 37 #include <drm/drm_crtc.h> 38 #include <drm/drm_edid.h> 39 #include <drm/drm_fourcc.h> 40 41 /** 42 * drm_modeset_lock_all - take all modeset locks 43 * @dev: drm device 44 * 45 * This function takes all modeset locks, suitable where a more fine-grained 46 * scheme isn't (yet) implemented. 47 */ 48 void drm_modeset_lock_all(struct drm_device *dev) 49 { 50 struct drm_crtc *crtc; 51 52 mutex_lock(&dev->mode_config.mutex); 53 54 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 55 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); 56 } 57 EXPORT_SYMBOL(drm_modeset_lock_all); 58 59 /** 60 * drm_modeset_unlock_all - drop all modeset locks 61 * @dev: device 62 */ 63 void drm_modeset_unlock_all(struct drm_device *dev) 64 { 65 struct drm_crtc *crtc; 66 67 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 68 mutex_unlock(&crtc->mutex); 69 70 mutex_unlock(&dev->mode_config.mutex); 71 } 72 EXPORT_SYMBOL(drm_modeset_unlock_all); 73 74 /** 75 * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked 76 * @dev: device 77 */ 78 void drm_warn_on_modeset_not_all_locked(struct drm_device *dev) 79 { 80 struct drm_crtc *crtc; 81 82 /* Locking is currently fubar in the panic handler. */ 83 if (oops_in_progress) 84 return; 85 86 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 87 WARN_ON(!mutex_is_locked(&crtc->mutex)); 88 89 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); 90 } 91 EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked); 92 93 /* Avoid boilerplate. I'm tired of typing. */ 94 #define DRM_ENUM_NAME_FN(fnname, list) \ 95 const char *fnname(int val) \ 96 { \ 97 int i; \ 98 for (i = 0; i < ARRAY_SIZE(list); i++) { \ 99 if (list[i].type == val) \ 100 return list[i].name; \ 101 } \ 102 return "(unknown)"; \ 103 } 104 105 /* 106 * Global properties 107 */ 108 static const struct drm_prop_enum_list drm_dpms_enum_list[] = 109 { { DRM_MODE_DPMS_ON, "On" }, 110 { DRM_MODE_DPMS_STANDBY, "Standby" }, 111 { DRM_MODE_DPMS_SUSPEND, "Suspend" }, 112 { DRM_MODE_DPMS_OFF, "Off" } 113 }; 114 115 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) 116 117 /* 118 * Optional properties 119 */ 120 static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = 121 { 122 { DRM_MODE_SCALE_NONE, "None" }, 123 { DRM_MODE_SCALE_FULLSCREEN, "Full" }, 124 { DRM_MODE_SCALE_CENTER, "Center" }, 125 { DRM_MODE_SCALE_ASPECT, "Full aspect" }, 126 }; 127 128 /* 129 * Non-global properties, but "required" for certain connectors. 130 */ 131 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = 132 { 133 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ 134 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ 135 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ 136 }; 137 138 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) 139 140 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = 141 { 142 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 143 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ 144 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ 145 }; 146 147 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, 148 drm_dvi_i_subconnector_enum_list) 149 150 static const struct drm_prop_enum_list drm_tv_select_enum_list[] = 151 { 152 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ 153 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 154 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 155 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 156 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 157 }; 158 159 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) 160 161 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = 162 { 163 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 164 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 165 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 166 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 167 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 168 }; 169 170 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, 171 drm_tv_subconnector_enum_list) 172 173 static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = { 174 { DRM_MODE_DIRTY_OFF, "Off" }, 175 { DRM_MODE_DIRTY_ON, "On" }, 176 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" }, 177 }; 178 179 struct drm_conn_prop_enum_list { 180 int type; 181 const char *name; 182 struct ida ida; 183 }; 184 185 /* 186 * Connector and encoder types. 187 */ 188 static struct drm_conn_prop_enum_list drm_connector_enum_list[] = 189 { { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, 190 { DRM_MODE_CONNECTOR_VGA, "VGA" }, 191 { DRM_MODE_CONNECTOR_DVII, "DVI-I" }, 192 { DRM_MODE_CONNECTOR_DVID, "DVI-D" }, 193 { DRM_MODE_CONNECTOR_DVIA, "DVI-A" }, 194 { DRM_MODE_CONNECTOR_Composite, "Composite" }, 195 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" }, 196 { DRM_MODE_CONNECTOR_LVDS, "LVDS" }, 197 { DRM_MODE_CONNECTOR_Component, "Component" }, 198 { DRM_MODE_CONNECTOR_9PinDIN, "DIN" }, 199 { DRM_MODE_CONNECTOR_DisplayPort, "DP" }, 200 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" }, 201 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" }, 202 { DRM_MODE_CONNECTOR_TV, "TV" }, 203 { DRM_MODE_CONNECTOR_eDP, "eDP" }, 204 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" }, 205 { DRM_MODE_CONNECTOR_DSI, "DSI" }, 206 }; 207 208 static const struct drm_prop_enum_list drm_encoder_enum_list[] = 209 { { DRM_MODE_ENCODER_NONE, "None" }, 210 { DRM_MODE_ENCODER_DAC, "DAC" }, 211 { DRM_MODE_ENCODER_TMDS, "TMDS" }, 212 { DRM_MODE_ENCODER_LVDS, "LVDS" }, 213 { DRM_MODE_ENCODER_TVDAC, "TV" }, 214 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" }, 215 { DRM_MODE_ENCODER_DSI, "DSI" }, 216 }; 217 218 void drm_connector_ida_init(void) 219 { 220 int i; 221 222 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) 223 ida_init(&drm_connector_enum_list[i].ida); 224 } 225 226 void drm_connector_ida_destroy(void) 227 { 228 int i; 229 230 for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) 231 ida_destroy(&drm_connector_enum_list[i].ida); 232 } 233 234 const char *drm_get_encoder_name(const struct drm_encoder *encoder) 235 { 236 static char buf[32]; 237 238 snprintf(buf, 32, "%s-%d", 239 drm_encoder_enum_list[encoder->encoder_type].name, 240 encoder->base.id); 241 return buf; 242 } 243 EXPORT_SYMBOL(drm_get_encoder_name); 244 245 const char *drm_get_connector_name(const struct drm_connector *connector) 246 { 247 static char buf[32]; 248 249 snprintf(buf, 32, "%s-%d", 250 drm_connector_enum_list[connector->connector_type].name, 251 connector->connector_type_id); 252 return buf; 253 } 254 EXPORT_SYMBOL(drm_get_connector_name); 255 256 const char *drm_get_connector_status_name(enum drm_connector_status status) 257 { 258 if (status == connector_status_connected) 259 return "connected"; 260 else if (status == connector_status_disconnected) 261 return "disconnected"; 262 else 263 return "unknown"; 264 } 265 EXPORT_SYMBOL(drm_get_connector_status_name); 266 267 static char printable_char(int c) 268 { 269 return isascii(c) && isprint(c) ? c : '?'; 270 } 271 272 const char *drm_get_format_name(uint32_t format) 273 { 274 static char buf[32]; 275 276 snprintf(buf, sizeof(buf), 277 "%c%c%c%c %s-endian (0x%08x)", 278 printable_char(format & 0xff), 279 printable_char((format >> 8) & 0xff), 280 printable_char((format >> 16) & 0xff), 281 printable_char((format >> 24) & 0x7f), 282 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little", 283 format); 284 285 return buf; 286 } 287 EXPORT_SYMBOL(drm_get_format_name); 288 289 /** 290 * drm_mode_object_get - allocate a new modeset identifier 291 * @dev: DRM device 292 * @obj: object pointer, used to generate unique ID 293 * @obj_type: object type 294 * 295 * Create a unique identifier based on @ptr in @dev's identifier space. Used 296 * for tracking modes, CRTCs and connectors. 297 * 298 * RETURNS: 299 * New unique (relative to other objects in @dev) integer identifier for the 300 * object. 301 */ 302 static int drm_mode_object_get(struct drm_device *dev, 303 struct drm_mode_object *obj, uint32_t obj_type) 304 { 305 int ret; 306 307 mutex_lock(&dev->mode_config.idr_mutex); 308 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL); 309 if (ret >= 0) { 310 /* 311 * Set up the object linking under the protection of the idr 312 * lock so that other users can't see inconsistent state. 313 */ 314 obj->id = ret; 315 obj->type = obj_type; 316 } 317 mutex_unlock(&dev->mode_config.idr_mutex); 318 319 return ret < 0 ? ret : 0; 320 } 321 322 /** 323 * drm_mode_object_put - free a modeset identifer 324 * @dev: DRM device 325 * @object: object to free 326 * 327 * Free @id from @dev's unique identifier pool. 328 */ 329 static void drm_mode_object_put(struct drm_device *dev, 330 struct drm_mode_object *object) 331 { 332 mutex_lock(&dev->mode_config.idr_mutex); 333 idr_remove(&dev->mode_config.crtc_idr, object->id); 334 mutex_unlock(&dev->mode_config.idr_mutex); 335 } 336 337 /** 338 * drm_mode_object_find - look up a drm object with static lifetime 339 * @dev: drm device 340 * @id: id of the mode object 341 * @type: type of the mode object 342 * 343 * Note that framebuffers cannot be looked up with this functions - since those 344 * are reference counted, they need special treatment. 345 */ 346 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, 347 uint32_t id, uint32_t type) 348 { 349 struct drm_mode_object *obj = NULL; 350 351 /* Framebuffers are reference counted and need their own lookup 352 * function.*/ 353 WARN_ON(type == DRM_MODE_OBJECT_FB); 354 355 mutex_lock(&dev->mode_config.idr_mutex); 356 obj = idr_find(&dev->mode_config.crtc_idr, id); 357 if (!obj || (obj->type != type) || (obj->id != id)) 358 obj = NULL; 359 mutex_unlock(&dev->mode_config.idr_mutex); 360 361 return obj; 362 } 363 EXPORT_SYMBOL(drm_mode_object_find); 364 365 /** 366 * drm_framebuffer_init - initialize a framebuffer 367 * @dev: DRM device 368 * @fb: framebuffer to be initialized 369 * @funcs: ... with these functions 370 * 371 * Allocates an ID for the framebuffer's parent mode object, sets its mode 372 * functions & device file and adds it to the master fd list. 373 * 374 * IMPORTANT: 375 * This functions publishes the fb and makes it available for concurrent access 376 * by other users. Which means by this point the fb _must_ be fully set up - 377 * since all the fb attributes are invariant over its lifetime, no further 378 * locking but only correct reference counting is required. 379 * 380 * RETURNS: 381 * Zero on success, error code on failure. 382 */ 383 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, 384 const struct drm_framebuffer_funcs *funcs) 385 { 386 int ret; 387 388 mutex_lock(&dev->mode_config.fb_lock); 389 kref_init(&fb->refcount); 390 INIT_LIST_HEAD(&fb->filp_head); 391 fb->dev = dev; 392 fb->funcs = funcs; 393 394 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB); 395 if (ret) 396 goto out; 397 398 /* Grab the idr reference. */ 399 drm_framebuffer_reference(fb); 400 401 dev->mode_config.num_fb++; 402 list_add(&fb->head, &dev->mode_config.fb_list); 403 out: 404 mutex_unlock(&dev->mode_config.fb_lock); 405 406 return 0; 407 } 408 EXPORT_SYMBOL(drm_framebuffer_init); 409 410 static void drm_framebuffer_free(struct kref *kref) 411 { 412 struct drm_framebuffer *fb = 413 container_of(kref, struct drm_framebuffer, refcount); 414 fb->funcs->destroy(fb); 415 } 416 417 static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev, 418 uint32_t id) 419 { 420 struct drm_mode_object *obj = NULL; 421 struct drm_framebuffer *fb; 422 423 mutex_lock(&dev->mode_config.idr_mutex); 424 obj = idr_find(&dev->mode_config.crtc_idr, id); 425 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id)) 426 fb = NULL; 427 else 428 fb = obj_to_fb(obj); 429 mutex_unlock(&dev->mode_config.idr_mutex); 430 431 return fb; 432 } 433 434 /** 435 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference 436 * @dev: drm device 437 * @id: id of the fb object 438 * 439 * If successful, this grabs an additional reference to the framebuffer - 440 * callers need to make sure to eventually unreference the returned framebuffer 441 * again. 442 */ 443 struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, 444 uint32_t id) 445 { 446 struct drm_framebuffer *fb; 447 448 mutex_lock(&dev->mode_config.fb_lock); 449 fb = __drm_framebuffer_lookup(dev, id); 450 if (fb) 451 drm_framebuffer_reference(fb); 452 mutex_unlock(&dev->mode_config.fb_lock); 453 454 return fb; 455 } 456 EXPORT_SYMBOL(drm_framebuffer_lookup); 457 458 /** 459 * drm_framebuffer_unreference - unref a framebuffer 460 * @fb: framebuffer to unref 461 * 462 * This functions decrements the fb's refcount and frees it if it drops to zero. 463 */ 464 void drm_framebuffer_unreference(struct drm_framebuffer *fb) 465 { 466 DRM_DEBUG("FB ID: %d\n", fb->base.id); 467 kref_put(&fb->refcount, drm_framebuffer_free); 468 } 469 EXPORT_SYMBOL(drm_framebuffer_unreference); 470 471 /** 472 * drm_framebuffer_reference - incr the fb refcnt 473 * @fb: framebuffer 474 */ 475 void drm_framebuffer_reference(struct drm_framebuffer *fb) 476 { 477 DRM_DEBUG("FB ID: %d\n", fb->base.id); 478 kref_get(&fb->refcount); 479 } 480 EXPORT_SYMBOL(drm_framebuffer_reference); 481 482 static void drm_framebuffer_free_bug(struct kref *kref) 483 { 484 BUG(); 485 } 486 487 static void __drm_framebuffer_unreference(struct drm_framebuffer *fb) 488 { 489 DRM_DEBUG("FB ID: %d\n", fb->base.id); 490 kref_put(&fb->refcount, drm_framebuffer_free_bug); 491 } 492 493 /* dev->mode_config.fb_lock must be held! */ 494 static void __drm_framebuffer_unregister(struct drm_device *dev, 495 struct drm_framebuffer *fb) 496 { 497 mutex_lock(&dev->mode_config.idr_mutex); 498 idr_remove(&dev->mode_config.crtc_idr, fb->base.id); 499 mutex_unlock(&dev->mode_config.idr_mutex); 500 501 fb->base.id = 0; 502 503 __drm_framebuffer_unreference(fb); 504 } 505 506 /** 507 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr 508 * @fb: fb to unregister 509 * 510 * Drivers need to call this when cleaning up driver-private framebuffers, e.g. 511 * those used for fbdev. Note that the caller must hold a reference of it's own, 512 * i.e. the object may not be destroyed through this call (since it'll lead to a 513 * locking inversion). 514 */ 515 void drm_framebuffer_unregister_private(struct drm_framebuffer *fb) 516 { 517 struct drm_device *dev = fb->dev; 518 519 mutex_lock(&dev->mode_config.fb_lock); 520 /* Mark fb as reaped and drop idr ref. */ 521 __drm_framebuffer_unregister(dev, fb); 522 mutex_unlock(&dev->mode_config.fb_lock); 523 } 524 EXPORT_SYMBOL(drm_framebuffer_unregister_private); 525 526 /** 527 * drm_framebuffer_cleanup - remove a framebuffer object 528 * @fb: framebuffer to remove 529 * 530 * Cleanup references to a user-created framebuffer. This function is intended 531 * to be used from the drivers ->destroy callback. 532 * 533 * Note that this function does not remove the fb from active usuage - if it is 534 * still used anywhere, hilarity can ensue since userspace could call getfb on 535 * the id and get back -EINVAL. Obviously no concern at driver unload time. 536 * 537 * Also, the framebuffer will not be removed from the lookup idr - for 538 * user-created framebuffers this will happen in in the rmfb ioctl. For 539 * driver-private objects (e.g. for fbdev) drivers need to explicitly call 540 * drm_framebuffer_unregister_private. 541 */ 542 void drm_framebuffer_cleanup(struct drm_framebuffer *fb) 543 { 544 struct drm_device *dev = fb->dev; 545 546 mutex_lock(&dev->mode_config.fb_lock); 547 list_del(&fb->head); 548 dev->mode_config.num_fb--; 549 mutex_unlock(&dev->mode_config.fb_lock); 550 } 551 EXPORT_SYMBOL(drm_framebuffer_cleanup); 552 553 /** 554 * drm_framebuffer_remove - remove and unreference a framebuffer object 555 * @fb: framebuffer to remove 556 * 557 * Scans all the CRTCs and planes in @dev's mode_config. If they're 558 * using @fb, removes it, setting it to NULL. Then drops the reference to the 559 * passed-in framebuffer. Might take the modeset locks. 560 * 561 * Note that this function optimizes the cleanup away if the caller holds the 562 * last reference to the framebuffer. It is also guaranteed to not take the 563 * modeset locks in this case. 564 */ 565 void drm_framebuffer_remove(struct drm_framebuffer *fb) 566 { 567 struct drm_device *dev = fb->dev; 568 struct drm_crtc *crtc; 569 struct drm_plane *plane; 570 struct drm_mode_set set; 571 int ret; 572 573 WARN_ON(!list_empty(&fb->filp_head)); 574 575 /* 576 * drm ABI mandates that we remove any deleted framebuffers from active 577 * useage. But since most sane clients only remove framebuffers they no 578 * longer need, try to optimize this away. 579 * 580 * Since we're holding a reference ourselves, observing a refcount of 1 581 * means that we're the last holder and can skip it. Also, the refcount 582 * can never increase from 1 again, so we don't need any barriers or 583 * locks. 584 * 585 * Note that userspace could try to race with use and instate a new 586 * usage _after_ we've cleared all current ones. End result will be an 587 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot 588 * in this manner. 589 */ 590 if (atomic_read(&fb->refcount.refcount) > 1) { 591 drm_modeset_lock_all(dev); 592 /* remove from any CRTC */ 593 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 594 if (crtc->fb == fb) { 595 /* should turn off the crtc */ 596 memset(&set, 0, sizeof(struct drm_mode_set)); 597 set.crtc = crtc; 598 set.fb = NULL; 599 ret = drm_mode_set_config_internal(&set); 600 if (ret) 601 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc); 602 } 603 } 604 605 list_for_each_entry(plane, &dev->mode_config.plane_list, head) { 606 if (plane->fb == fb) 607 drm_plane_force_disable(plane); 608 } 609 drm_modeset_unlock_all(dev); 610 } 611 612 drm_framebuffer_unreference(fb); 613 } 614 EXPORT_SYMBOL(drm_framebuffer_remove); 615 616 /** 617 * drm_crtc_init - Initialise a new CRTC object 618 * @dev: DRM device 619 * @crtc: CRTC object to init 620 * @funcs: callbacks for the new CRTC 621 * 622 * Inits a new object created as base part of a driver crtc object. 623 * 624 * RETURNS: 625 * Zero on success, error code on failure. 626 */ 627 int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 628 const struct drm_crtc_funcs *funcs) 629 { 630 int ret; 631 632 crtc->dev = dev; 633 crtc->funcs = funcs; 634 crtc->invert_dimensions = false; 635 636 drm_modeset_lock_all(dev); 637 mutex_init(&crtc->mutex); 638 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); 639 640 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); 641 if (ret) 642 goto out; 643 644 crtc->base.properties = &crtc->properties; 645 646 list_add_tail(&crtc->head, &dev->mode_config.crtc_list); 647 dev->mode_config.num_crtc++; 648 649 out: 650 drm_modeset_unlock_all(dev); 651 652 return ret; 653 } 654 EXPORT_SYMBOL(drm_crtc_init); 655 656 /** 657 * drm_crtc_cleanup - Clean up the core crtc usage 658 * @crtc: CRTC to cleanup 659 * 660 * This function cleans up @crtc and removes it from the DRM mode setting 661 * core. Note that the function does *not* free the crtc structure itself, 662 * this is the responsibility of the caller. 663 */ 664 void drm_crtc_cleanup(struct drm_crtc *crtc) 665 { 666 struct drm_device *dev = crtc->dev; 667 668 kfree(crtc->gamma_store); 669 crtc->gamma_store = NULL; 670 671 drm_mode_object_put(dev, &crtc->base); 672 list_del(&crtc->head); 673 dev->mode_config.num_crtc--; 674 } 675 EXPORT_SYMBOL(drm_crtc_cleanup); 676 677 /** 678 * drm_mode_probed_add - add a mode to a connector's probed mode list 679 * @connector: connector the new mode 680 * @mode: mode data 681 * 682 * Add @mode to @connector's mode list for later use. 683 */ 684 void drm_mode_probed_add(struct drm_connector *connector, 685 struct drm_display_mode *mode) 686 { 687 list_add_tail(&mode->head, &connector->probed_modes); 688 } 689 EXPORT_SYMBOL(drm_mode_probed_add); 690 691 /* 692 * drm_mode_remove - remove and free a mode 693 * @connector: connector list to modify 694 * @mode: mode to remove 695 * 696 * Remove @mode from @connector's mode list, then free it. 697 */ 698 static void drm_mode_remove(struct drm_connector *connector, 699 struct drm_display_mode *mode) 700 { 701 list_del(&mode->head); 702 drm_mode_destroy(connector->dev, mode); 703 } 704 705 /** 706 * drm_connector_init - Init a preallocated connector 707 * @dev: DRM device 708 * @connector: the connector to init 709 * @funcs: callbacks for this connector 710 * @connector_type: user visible type of the connector 711 * 712 * Initialises a preallocated connector. Connectors should be 713 * subclassed as part of driver connector objects. 714 * 715 * RETURNS: 716 * Zero on success, error code on failure. 717 */ 718 int drm_connector_init(struct drm_device *dev, 719 struct drm_connector *connector, 720 const struct drm_connector_funcs *funcs, 721 int connector_type) 722 { 723 int ret; 724 struct ida *connector_ida = 725 &drm_connector_enum_list[connector_type].ida; 726 727 drm_modeset_lock_all(dev); 728 729 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR); 730 if (ret) 731 goto out; 732 733 connector->base.properties = &connector->properties; 734 connector->dev = dev; 735 connector->funcs = funcs; 736 connector->connector_type = connector_type; 737 connector->connector_type_id = 738 ida_simple_get(connector_ida, 1, 0, GFP_KERNEL); 739 if (connector->connector_type_id < 0) { 740 ret = connector->connector_type_id; 741 drm_mode_object_put(dev, &connector->base); 742 goto out; 743 } 744 INIT_LIST_HEAD(&connector->probed_modes); 745 INIT_LIST_HEAD(&connector->modes); 746 connector->edid_blob_ptr = NULL; 747 connector->status = connector_status_unknown; 748 749 list_add_tail(&connector->head, &dev->mode_config.connector_list); 750 dev->mode_config.num_connector++; 751 752 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) 753 drm_object_attach_property(&connector->base, 754 dev->mode_config.edid_property, 755 0); 756 757 drm_object_attach_property(&connector->base, 758 dev->mode_config.dpms_property, 0); 759 760 out: 761 drm_modeset_unlock_all(dev); 762 763 return ret; 764 } 765 EXPORT_SYMBOL(drm_connector_init); 766 767 /** 768 * drm_connector_cleanup - cleans up an initialised connector 769 * @connector: connector to cleanup 770 * 771 * Cleans up the connector but doesn't free the object. 772 */ 773 void drm_connector_cleanup(struct drm_connector *connector) 774 { 775 struct drm_device *dev = connector->dev; 776 struct drm_display_mode *mode, *t; 777 778 list_for_each_entry_safe(mode, t, &connector->probed_modes, head) 779 drm_mode_remove(connector, mode); 780 781 list_for_each_entry_safe(mode, t, &connector->modes, head) 782 drm_mode_remove(connector, mode); 783 784 ida_remove(&drm_connector_enum_list[connector->connector_type].ida, 785 connector->connector_type_id); 786 787 drm_mode_object_put(dev, &connector->base); 788 list_del(&connector->head); 789 dev->mode_config.num_connector--; 790 } 791 EXPORT_SYMBOL(drm_connector_cleanup); 792 793 void drm_connector_unplug_all(struct drm_device *dev) 794 { 795 struct drm_connector *connector; 796 797 /* taking the mode config mutex ends up in a clash with sysfs */ 798 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 799 drm_sysfs_connector_remove(connector); 800 801 } 802 EXPORT_SYMBOL(drm_connector_unplug_all); 803 804 int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge, 805 const struct drm_bridge_funcs *funcs) 806 { 807 int ret; 808 809 drm_modeset_lock_all(dev); 810 811 ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE); 812 if (ret) 813 goto out; 814 815 bridge->dev = dev; 816 bridge->funcs = funcs; 817 818 list_add_tail(&bridge->head, &dev->mode_config.bridge_list); 819 dev->mode_config.num_bridge++; 820 821 out: 822 drm_modeset_unlock_all(dev); 823 return ret; 824 } 825 EXPORT_SYMBOL(drm_bridge_init); 826 827 void drm_bridge_cleanup(struct drm_bridge *bridge) 828 { 829 struct drm_device *dev = bridge->dev; 830 831 drm_modeset_lock_all(dev); 832 drm_mode_object_put(dev, &bridge->base); 833 list_del(&bridge->head); 834 dev->mode_config.num_bridge--; 835 drm_modeset_unlock_all(dev); 836 } 837 EXPORT_SYMBOL(drm_bridge_cleanup); 838 839 int drm_encoder_init(struct drm_device *dev, 840 struct drm_encoder *encoder, 841 const struct drm_encoder_funcs *funcs, 842 int encoder_type) 843 { 844 int ret; 845 846 drm_modeset_lock_all(dev); 847 848 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); 849 if (ret) 850 goto out; 851 852 encoder->dev = dev; 853 encoder->encoder_type = encoder_type; 854 encoder->funcs = funcs; 855 856 list_add_tail(&encoder->head, &dev->mode_config.encoder_list); 857 dev->mode_config.num_encoder++; 858 859 out: 860 drm_modeset_unlock_all(dev); 861 862 return ret; 863 } 864 EXPORT_SYMBOL(drm_encoder_init); 865 866 void drm_encoder_cleanup(struct drm_encoder *encoder) 867 { 868 struct drm_device *dev = encoder->dev; 869 drm_modeset_lock_all(dev); 870 drm_mode_object_put(dev, &encoder->base); 871 list_del(&encoder->head); 872 dev->mode_config.num_encoder--; 873 drm_modeset_unlock_all(dev); 874 } 875 EXPORT_SYMBOL(drm_encoder_cleanup); 876 877 /** 878 * drm_plane_init - Initialise a new plane object 879 * @dev: DRM device 880 * @plane: plane object to init 881 * @possible_crtcs: bitmask of possible CRTCs 882 * @funcs: callbacks for the new plane 883 * @formats: array of supported formats (%DRM_FORMAT_*) 884 * @format_count: number of elements in @formats 885 * @priv: plane is private (hidden from userspace)? 886 * 887 * Inits a new object created as base part of a driver plane object. 888 * 889 * RETURNS: 890 * Zero on success, error code on failure. 891 */ 892 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, 893 unsigned long possible_crtcs, 894 const struct drm_plane_funcs *funcs, 895 const uint32_t *formats, uint32_t format_count, 896 bool priv) 897 { 898 int ret; 899 900 drm_modeset_lock_all(dev); 901 902 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); 903 if (ret) 904 goto out; 905 906 plane->base.properties = &plane->properties; 907 plane->dev = dev; 908 plane->funcs = funcs; 909 plane->format_types = kmalloc(sizeof(uint32_t) * format_count, 910 GFP_KERNEL); 911 if (!plane->format_types) { 912 DRM_DEBUG_KMS("out of memory when allocating plane\n"); 913 drm_mode_object_put(dev, &plane->base); 914 ret = -ENOMEM; 915 goto out; 916 } 917 918 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); 919 plane->format_count = format_count; 920 plane->possible_crtcs = possible_crtcs; 921 922 /* private planes are not exposed to userspace, but depending on 923 * display hardware, might be convenient to allow sharing programming 924 * for the scanout engine with the crtc implementation. 925 */ 926 if (!priv) { 927 list_add_tail(&plane->head, &dev->mode_config.plane_list); 928 dev->mode_config.num_plane++; 929 } else { 930 INIT_LIST_HEAD(&plane->head); 931 } 932 933 out: 934 drm_modeset_unlock_all(dev); 935 936 return ret; 937 } 938 EXPORT_SYMBOL(drm_plane_init); 939 940 /** 941 * drm_plane_cleanup - Clean up the core plane usage 942 * @plane: plane to cleanup 943 * 944 * This function cleans up @plane and removes it from the DRM mode setting 945 * core. Note that the function does *not* free the plane structure itself, 946 * this is the responsibility of the caller. 947 */ 948 void drm_plane_cleanup(struct drm_plane *plane) 949 { 950 struct drm_device *dev = plane->dev; 951 952 drm_modeset_lock_all(dev); 953 kfree(plane->format_types); 954 drm_mode_object_put(dev, &plane->base); 955 /* if not added to a list, it must be a private plane */ 956 if (!list_empty(&plane->head)) { 957 list_del(&plane->head); 958 dev->mode_config.num_plane--; 959 } 960 drm_modeset_unlock_all(dev); 961 } 962 EXPORT_SYMBOL(drm_plane_cleanup); 963 964 /** 965 * drm_plane_force_disable - Forcibly disable a plane 966 * @plane: plane to disable 967 * 968 * Forces the plane to be disabled. 969 * 970 * Used when the plane's current framebuffer is destroyed, 971 * and when restoring fbdev mode. 972 */ 973 void drm_plane_force_disable(struct drm_plane *plane) 974 { 975 int ret; 976 977 if (!plane->fb) 978 return; 979 980 ret = plane->funcs->disable_plane(plane); 981 if (ret) 982 DRM_ERROR("failed to disable plane with busy fb\n"); 983 /* disconnect the plane from the fb and crtc: */ 984 __drm_framebuffer_unreference(plane->fb); 985 plane->fb = NULL; 986 plane->crtc = NULL; 987 } 988 EXPORT_SYMBOL(drm_plane_force_disable); 989 990 /** 991 * drm_mode_create - create a new display mode 992 * @dev: DRM device 993 * 994 * Create a new drm_display_mode, give it an ID, and return it. 995 * 996 * RETURNS: 997 * Pointer to new mode on success, NULL on error. 998 */ 999 struct drm_display_mode *drm_mode_create(struct drm_device *dev) 1000 { 1001 struct drm_display_mode *nmode; 1002 1003 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); 1004 if (!nmode) 1005 return NULL; 1006 1007 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { 1008 kfree(nmode); 1009 return NULL; 1010 } 1011 1012 return nmode; 1013 } 1014 EXPORT_SYMBOL(drm_mode_create); 1015 1016 /** 1017 * drm_mode_destroy - remove a mode 1018 * @dev: DRM device 1019 * @mode: mode to remove 1020 * 1021 * Free @mode's unique identifier, then free it. 1022 */ 1023 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) 1024 { 1025 if (!mode) 1026 return; 1027 1028 drm_mode_object_put(dev, &mode->base); 1029 1030 kfree(mode); 1031 } 1032 EXPORT_SYMBOL(drm_mode_destroy); 1033 1034 static int drm_mode_create_standard_connector_properties(struct drm_device *dev) 1035 { 1036 struct drm_property *edid; 1037 struct drm_property *dpms; 1038 1039 /* 1040 * Standard properties (apply to all connectors) 1041 */ 1042 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB | 1043 DRM_MODE_PROP_IMMUTABLE, 1044 "EDID", 0); 1045 dev->mode_config.edid_property = edid; 1046 1047 dpms = drm_property_create_enum(dev, 0, 1048 "DPMS", drm_dpms_enum_list, 1049 ARRAY_SIZE(drm_dpms_enum_list)); 1050 dev->mode_config.dpms_property = dpms; 1051 1052 return 0; 1053 } 1054 1055 /** 1056 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties 1057 * @dev: DRM device 1058 * 1059 * Called by a driver the first time a DVI-I connector is made. 1060 */ 1061 int drm_mode_create_dvi_i_properties(struct drm_device *dev) 1062 { 1063 struct drm_property *dvi_i_selector; 1064 struct drm_property *dvi_i_subconnector; 1065 1066 if (dev->mode_config.dvi_i_select_subconnector_property) 1067 return 0; 1068 1069 dvi_i_selector = 1070 drm_property_create_enum(dev, 0, 1071 "select subconnector", 1072 drm_dvi_i_select_enum_list, 1073 ARRAY_SIZE(drm_dvi_i_select_enum_list)); 1074 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; 1075 1076 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 1077 "subconnector", 1078 drm_dvi_i_subconnector_enum_list, 1079 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); 1080 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; 1081 1082 return 0; 1083 } 1084 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); 1085 1086 /** 1087 * drm_create_tv_properties - create TV specific connector properties 1088 * @dev: DRM device 1089 * @num_modes: number of different TV formats (modes) supported 1090 * @modes: array of pointers to strings containing name of each format 1091 * 1092 * Called by a driver's TV initialization routine, this function creates 1093 * the TV specific connector properties for a given device. Caller is 1094 * responsible for allocating a list of format names and passing them to 1095 * this routine. 1096 */ 1097 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes, 1098 char *modes[]) 1099 { 1100 struct drm_property *tv_selector; 1101 struct drm_property *tv_subconnector; 1102 int i; 1103 1104 if (dev->mode_config.tv_select_subconnector_property) 1105 return 0; 1106 1107 /* 1108 * Basic connector properties 1109 */ 1110 tv_selector = drm_property_create_enum(dev, 0, 1111 "select subconnector", 1112 drm_tv_select_enum_list, 1113 ARRAY_SIZE(drm_tv_select_enum_list)); 1114 dev->mode_config.tv_select_subconnector_property = tv_selector; 1115 1116 tv_subconnector = 1117 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 1118 "subconnector", 1119 drm_tv_subconnector_enum_list, 1120 ARRAY_SIZE(drm_tv_subconnector_enum_list)); 1121 dev->mode_config.tv_subconnector_property = tv_subconnector; 1122 1123 /* 1124 * Other, TV specific properties: margins & TV modes. 1125 */ 1126 dev->mode_config.tv_left_margin_property = 1127 drm_property_create_range(dev, 0, "left margin", 0, 100); 1128 1129 dev->mode_config.tv_right_margin_property = 1130 drm_property_create_range(dev, 0, "right margin", 0, 100); 1131 1132 dev->mode_config.tv_top_margin_property = 1133 drm_property_create_range(dev, 0, "top margin", 0, 100); 1134 1135 dev->mode_config.tv_bottom_margin_property = 1136 drm_property_create_range(dev, 0, "bottom margin", 0, 100); 1137 1138 dev->mode_config.tv_mode_property = 1139 drm_property_create(dev, DRM_MODE_PROP_ENUM, 1140 "mode", num_modes); 1141 for (i = 0; i < num_modes; i++) 1142 drm_property_add_enum(dev->mode_config.tv_mode_property, i, 1143 i, modes[i]); 1144 1145 dev->mode_config.tv_brightness_property = 1146 drm_property_create_range(dev, 0, "brightness", 0, 100); 1147 1148 dev->mode_config.tv_contrast_property = 1149 drm_property_create_range(dev, 0, "contrast", 0, 100); 1150 1151 dev->mode_config.tv_flicker_reduction_property = 1152 drm_property_create_range(dev, 0, "flicker reduction", 0, 100); 1153 1154 dev->mode_config.tv_overscan_property = 1155 drm_property_create_range(dev, 0, "overscan", 0, 100); 1156 1157 dev->mode_config.tv_saturation_property = 1158 drm_property_create_range(dev, 0, "saturation", 0, 100); 1159 1160 dev->mode_config.tv_hue_property = 1161 drm_property_create_range(dev, 0, "hue", 0, 100); 1162 1163 return 0; 1164 } 1165 EXPORT_SYMBOL(drm_mode_create_tv_properties); 1166 1167 /** 1168 * drm_mode_create_scaling_mode_property - create scaling mode property 1169 * @dev: DRM device 1170 * 1171 * Called by a driver the first time it's needed, must be attached to desired 1172 * connectors. 1173 */ 1174 int drm_mode_create_scaling_mode_property(struct drm_device *dev) 1175 { 1176 struct drm_property *scaling_mode; 1177 1178 if (dev->mode_config.scaling_mode_property) 1179 return 0; 1180 1181 scaling_mode = 1182 drm_property_create_enum(dev, 0, "scaling mode", 1183 drm_scaling_mode_enum_list, 1184 ARRAY_SIZE(drm_scaling_mode_enum_list)); 1185 1186 dev->mode_config.scaling_mode_property = scaling_mode; 1187 1188 return 0; 1189 } 1190 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); 1191 1192 /** 1193 * drm_mode_create_dirty_property - create dirty property 1194 * @dev: DRM device 1195 * 1196 * Called by a driver the first time it's needed, must be attached to desired 1197 * connectors. 1198 */ 1199 int drm_mode_create_dirty_info_property(struct drm_device *dev) 1200 { 1201 struct drm_property *dirty_info; 1202 1203 if (dev->mode_config.dirty_info_property) 1204 return 0; 1205 1206 dirty_info = 1207 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 1208 "dirty", 1209 drm_dirty_info_enum_list, 1210 ARRAY_SIZE(drm_dirty_info_enum_list)); 1211 dev->mode_config.dirty_info_property = dirty_info; 1212 1213 return 0; 1214 } 1215 EXPORT_SYMBOL(drm_mode_create_dirty_info_property); 1216 1217 static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) 1218 { 1219 uint32_t total_objects = 0; 1220 1221 total_objects += dev->mode_config.num_crtc; 1222 total_objects += dev->mode_config.num_connector; 1223 total_objects += dev->mode_config.num_encoder; 1224 total_objects += dev->mode_config.num_bridge; 1225 1226 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); 1227 if (!group->id_list) 1228 return -ENOMEM; 1229 1230 group->num_crtcs = 0; 1231 group->num_connectors = 0; 1232 group->num_encoders = 0; 1233 group->num_bridges = 0; 1234 return 0; 1235 } 1236 1237 int drm_mode_group_init_legacy_group(struct drm_device *dev, 1238 struct drm_mode_group *group) 1239 { 1240 struct drm_crtc *crtc; 1241 struct drm_encoder *encoder; 1242 struct drm_connector *connector; 1243 struct drm_bridge *bridge; 1244 int ret; 1245 1246 if ((ret = drm_mode_group_init(dev, group))) 1247 return ret; 1248 1249 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 1250 group->id_list[group->num_crtcs++] = crtc->base.id; 1251 1252 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 1253 group->id_list[group->num_crtcs + group->num_encoders++] = 1254 encoder->base.id; 1255 1256 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 1257 group->id_list[group->num_crtcs + group->num_encoders + 1258 group->num_connectors++] = connector->base.id; 1259 1260 list_for_each_entry(bridge, &dev->mode_config.bridge_list, head) 1261 group->id_list[group->num_crtcs + group->num_encoders + 1262 group->num_connectors + group->num_bridges++] = 1263 bridge->base.id; 1264 1265 return 0; 1266 } 1267 EXPORT_SYMBOL(drm_mode_group_init_legacy_group); 1268 1269 /** 1270 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo 1271 * @out: drm_mode_modeinfo struct to return to the user 1272 * @in: drm_display_mode to use 1273 * 1274 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to 1275 * the user. 1276 */ 1277 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, 1278 const struct drm_display_mode *in) 1279 { 1280 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || 1281 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || 1282 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || 1283 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || 1284 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, 1285 "timing values too large for mode info\n"); 1286 1287 out->clock = in->clock; 1288 out->hdisplay = in->hdisplay; 1289 out->hsync_start = in->hsync_start; 1290 out->hsync_end = in->hsync_end; 1291 out->htotal = in->htotal; 1292 out->hskew = in->hskew; 1293 out->vdisplay = in->vdisplay; 1294 out->vsync_start = in->vsync_start; 1295 out->vsync_end = in->vsync_end; 1296 out->vtotal = in->vtotal; 1297 out->vscan = in->vscan; 1298 out->vrefresh = in->vrefresh; 1299 out->flags = in->flags; 1300 out->type = in->type; 1301 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1302 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1303 } 1304 1305 /** 1306 * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode 1307 * @out: drm_display_mode to return to the user 1308 * @in: drm_mode_modeinfo to use 1309 * 1310 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to 1311 * the caller. 1312 * 1313 * RETURNS: 1314 * Zero on success, errno on failure. 1315 */ 1316 static int drm_crtc_convert_umode(struct drm_display_mode *out, 1317 const struct drm_mode_modeinfo *in) 1318 { 1319 if (in->clock > INT_MAX || in->vrefresh > INT_MAX) 1320 return -ERANGE; 1321 1322 if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX) 1323 return -EINVAL; 1324 1325 out->clock = in->clock; 1326 out->hdisplay = in->hdisplay; 1327 out->hsync_start = in->hsync_start; 1328 out->hsync_end = in->hsync_end; 1329 out->htotal = in->htotal; 1330 out->hskew = in->hskew; 1331 out->vdisplay = in->vdisplay; 1332 out->vsync_start = in->vsync_start; 1333 out->vsync_end = in->vsync_end; 1334 out->vtotal = in->vtotal; 1335 out->vscan = in->vscan; 1336 out->vrefresh = in->vrefresh; 1337 out->flags = in->flags; 1338 out->type = in->type; 1339 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1340 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1341 1342 return 0; 1343 } 1344 1345 /** 1346 * drm_mode_getresources - get graphics configuration 1347 * @dev: drm device for the ioctl 1348 * @data: data pointer for the ioctl 1349 * @file_priv: drm file for the ioctl call 1350 * 1351 * Construct a set of configuration description structures and return 1352 * them to the user, including CRTC, connector and framebuffer configuration. 1353 * 1354 * Called by the user via ioctl. 1355 * 1356 * RETURNS: 1357 * Zero on success, errno on failure. 1358 */ 1359 int drm_mode_getresources(struct drm_device *dev, void *data, 1360 struct drm_file *file_priv) 1361 { 1362 struct drm_mode_card_res *card_res = data; 1363 struct list_head *lh; 1364 struct drm_framebuffer *fb; 1365 struct drm_connector *connector; 1366 struct drm_crtc *crtc; 1367 struct drm_encoder *encoder; 1368 int ret = 0; 1369 int connector_count = 0; 1370 int crtc_count = 0; 1371 int fb_count = 0; 1372 int encoder_count = 0; 1373 int copied = 0, i; 1374 uint32_t __user *fb_id; 1375 uint32_t __user *crtc_id; 1376 uint32_t __user *connector_id; 1377 uint32_t __user *encoder_id; 1378 struct drm_mode_group *mode_group; 1379 1380 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1381 return -EINVAL; 1382 1383 1384 mutex_lock(&file_priv->fbs_lock); 1385 /* 1386 * For the non-control nodes we need to limit the list of resources 1387 * by IDs in the group list for this node 1388 */ 1389 list_for_each(lh, &file_priv->fbs) 1390 fb_count++; 1391 1392 /* handle this in 4 parts */ 1393 /* FBs */ 1394 if (card_res->count_fbs >= fb_count) { 1395 copied = 0; 1396 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; 1397 list_for_each_entry(fb, &file_priv->fbs, filp_head) { 1398 if (put_user(fb->base.id, fb_id + copied)) { 1399 mutex_unlock(&file_priv->fbs_lock); 1400 return -EFAULT; 1401 } 1402 copied++; 1403 } 1404 } 1405 card_res->count_fbs = fb_count; 1406 mutex_unlock(&file_priv->fbs_lock); 1407 1408 drm_modeset_lock_all(dev); 1409 mode_group = &file_priv->master->minor->mode_group; 1410 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1411 1412 list_for_each(lh, &dev->mode_config.crtc_list) 1413 crtc_count++; 1414 1415 list_for_each(lh, &dev->mode_config.connector_list) 1416 connector_count++; 1417 1418 list_for_each(lh, &dev->mode_config.encoder_list) 1419 encoder_count++; 1420 } else { 1421 1422 crtc_count = mode_group->num_crtcs; 1423 connector_count = mode_group->num_connectors; 1424 encoder_count = mode_group->num_encoders; 1425 } 1426 1427 card_res->max_height = dev->mode_config.max_height; 1428 card_res->min_height = dev->mode_config.min_height; 1429 card_res->max_width = dev->mode_config.max_width; 1430 card_res->min_width = dev->mode_config.min_width; 1431 1432 /* CRTCs */ 1433 if (card_res->count_crtcs >= crtc_count) { 1434 copied = 0; 1435 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; 1436 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1437 list_for_each_entry(crtc, &dev->mode_config.crtc_list, 1438 head) { 1439 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 1440 if (put_user(crtc->base.id, crtc_id + copied)) { 1441 ret = -EFAULT; 1442 goto out; 1443 } 1444 copied++; 1445 } 1446 } else { 1447 for (i = 0; i < mode_group->num_crtcs; i++) { 1448 if (put_user(mode_group->id_list[i], 1449 crtc_id + copied)) { 1450 ret = -EFAULT; 1451 goto out; 1452 } 1453 copied++; 1454 } 1455 } 1456 } 1457 card_res->count_crtcs = crtc_count; 1458 1459 /* Encoders */ 1460 if (card_res->count_encoders >= encoder_count) { 1461 copied = 0; 1462 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; 1463 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1464 list_for_each_entry(encoder, 1465 &dev->mode_config.encoder_list, 1466 head) { 1467 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id, 1468 drm_get_encoder_name(encoder)); 1469 if (put_user(encoder->base.id, encoder_id + 1470 copied)) { 1471 ret = -EFAULT; 1472 goto out; 1473 } 1474 copied++; 1475 } 1476 } else { 1477 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { 1478 if (put_user(mode_group->id_list[i], 1479 encoder_id + copied)) { 1480 ret = -EFAULT; 1481 goto out; 1482 } 1483 copied++; 1484 } 1485 1486 } 1487 } 1488 card_res->count_encoders = encoder_count; 1489 1490 /* Connectors */ 1491 if (card_res->count_connectors >= connector_count) { 1492 copied = 0; 1493 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; 1494 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1495 list_for_each_entry(connector, 1496 &dev->mode_config.connector_list, 1497 head) { 1498 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 1499 connector->base.id, 1500 drm_get_connector_name(connector)); 1501 if (put_user(connector->base.id, 1502 connector_id + copied)) { 1503 ret = -EFAULT; 1504 goto out; 1505 } 1506 copied++; 1507 } 1508 } else { 1509 int start = mode_group->num_crtcs + 1510 mode_group->num_encoders; 1511 for (i = start; i < start + mode_group->num_connectors; i++) { 1512 if (put_user(mode_group->id_list[i], 1513 connector_id + copied)) { 1514 ret = -EFAULT; 1515 goto out; 1516 } 1517 copied++; 1518 } 1519 } 1520 } 1521 card_res->count_connectors = connector_count; 1522 1523 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs, 1524 card_res->count_connectors, card_res->count_encoders); 1525 1526 out: 1527 drm_modeset_unlock_all(dev); 1528 return ret; 1529 } 1530 1531 /** 1532 * drm_mode_getcrtc - get CRTC configuration 1533 * @dev: drm device for the ioctl 1534 * @data: data pointer for the ioctl 1535 * @file_priv: drm file for the ioctl call 1536 * 1537 * Construct a CRTC configuration structure to return to the user. 1538 * 1539 * Called by the user via ioctl. 1540 * 1541 * RETURNS: 1542 * Zero on success, errno on failure. 1543 */ 1544 int drm_mode_getcrtc(struct drm_device *dev, 1545 void *data, struct drm_file *file_priv) 1546 { 1547 struct drm_mode_crtc *crtc_resp = data; 1548 struct drm_crtc *crtc; 1549 struct drm_mode_object *obj; 1550 int ret = 0; 1551 1552 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1553 return -EINVAL; 1554 1555 drm_modeset_lock_all(dev); 1556 1557 obj = drm_mode_object_find(dev, crtc_resp->crtc_id, 1558 DRM_MODE_OBJECT_CRTC); 1559 if (!obj) { 1560 ret = -ENOENT; 1561 goto out; 1562 } 1563 crtc = obj_to_crtc(obj); 1564 1565 crtc_resp->x = crtc->x; 1566 crtc_resp->y = crtc->y; 1567 crtc_resp->gamma_size = crtc->gamma_size; 1568 if (crtc->fb) 1569 crtc_resp->fb_id = crtc->fb->base.id; 1570 else 1571 crtc_resp->fb_id = 0; 1572 1573 if (crtc->enabled) { 1574 1575 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); 1576 crtc_resp->mode_valid = 1; 1577 1578 } else { 1579 crtc_resp->mode_valid = 0; 1580 } 1581 1582 out: 1583 drm_modeset_unlock_all(dev); 1584 return ret; 1585 } 1586 1587 static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode, 1588 const struct drm_file *file_priv) 1589 { 1590 /* 1591 * If user-space hasn't configured the driver to expose the stereo 3D 1592 * modes, don't expose them. 1593 */ 1594 if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode)) 1595 return false; 1596 1597 return true; 1598 } 1599 1600 /** 1601 * drm_mode_getconnector - get connector configuration 1602 * @dev: drm device for the ioctl 1603 * @data: data pointer for the ioctl 1604 * @file_priv: drm file for the ioctl call 1605 * 1606 * Construct a connector configuration structure to return to the user. 1607 * 1608 * Called by the user via ioctl. 1609 * 1610 * RETURNS: 1611 * Zero on success, errno on failure. 1612 */ 1613 int drm_mode_getconnector(struct drm_device *dev, void *data, 1614 struct drm_file *file_priv) 1615 { 1616 struct drm_mode_get_connector *out_resp = data; 1617 struct drm_mode_object *obj; 1618 struct drm_connector *connector; 1619 struct drm_display_mode *mode; 1620 int mode_count = 0; 1621 int props_count = 0; 1622 int encoders_count = 0; 1623 int ret = 0; 1624 int copied = 0; 1625 int i; 1626 struct drm_mode_modeinfo u_mode; 1627 struct drm_mode_modeinfo __user *mode_ptr; 1628 uint32_t __user *prop_ptr; 1629 uint64_t __user *prop_values; 1630 uint32_t __user *encoder_ptr; 1631 1632 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1633 return -EINVAL; 1634 1635 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); 1636 1637 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id); 1638 1639 mutex_lock(&dev->mode_config.mutex); 1640 1641 obj = drm_mode_object_find(dev, out_resp->connector_id, 1642 DRM_MODE_OBJECT_CONNECTOR); 1643 if (!obj) { 1644 ret = -ENOENT; 1645 goto out; 1646 } 1647 connector = obj_to_connector(obj); 1648 1649 props_count = connector->properties.count; 1650 1651 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1652 if (connector->encoder_ids[i] != 0) { 1653 encoders_count++; 1654 } 1655 } 1656 1657 if (out_resp->count_modes == 0) { 1658 connector->funcs->fill_modes(connector, 1659 dev->mode_config.max_width, 1660 dev->mode_config.max_height); 1661 } 1662 1663 /* delayed so we get modes regardless of pre-fill_modes state */ 1664 list_for_each_entry(mode, &connector->modes, head) 1665 if (drm_mode_expose_to_userspace(mode, file_priv)) 1666 mode_count++; 1667 1668 out_resp->connector_id = connector->base.id; 1669 out_resp->connector_type = connector->connector_type; 1670 out_resp->connector_type_id = connector->connector_type_id; 1671 out_resp->mm_width = connector->display_info.width_mm; 1672 out_resp->mm_height = connector->display_info.height_mm; 1673 out_resp->subpixel = connector->display_info.subpixel_order; 1674 out_resp->connection = connector->status; 1675 if (connector->encoder) 1676 out_resp->encoder_id = connector->encoder->base.id; 1677 else 1678 out_resp->encoder_id = 0; 1679 1680 /* 1681 * This ioctl is called twice, once to determine how much space is 1682 * needed, and the 2nd time to fill it. 1683 */ 1684 if ((out_resp->count_modes >= mode_count) && mode_count) { 1685 copied = 0; 1686 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; 1687 list_for_each_entry(mode, &connector->modes, head) { 1688 if (!drm_mode_expose_to_userspace(mode, file_priv)) 1689 continue; 1690 1691 drm_crtc_convert_to_umode(&u_mode, mode); 1692 if (copy_to_user(mode_ptr + copied, 1693 &u_mode, sizeof(u_mode))) { 1694 ret = -EFAULT; 1695 goto out; 1696 } 1697 copied++; 1698 } 1699 } 1700 out_resp->count_modes = mode_count; 1701 1702 if ((out_resp->count_props >= props_count) && props_count) { 1703 copied = 0; 1704 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr); 1705 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr); 1706 for (i = 0; i < connector->properties.count; i++) { 1707 if (put_user(connector->properties.ids[i], 1708 prop_ptr + copied)) { 1709 ret = -EFAULT; 1710 goto out; 1711 } 1712 1713 if (put_user(connector->properties.values[i], 1714 prop_values + copied)) { 1715 ret = -EFAULT; 1716 goto out; 1717 } 1718 copied++; 1719 } 1720 } 1721 out_resp->count_props = props_count; 1722 1723 if ((out_resp->count_encoders >= encoders_count) && encoders_count) { 1724 copied = 0; 1725 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); 1726 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1727 if (connector->encoder_ids[i] != 0) { 1728 if (put_user(connector->encoder_ids[i], 1729 encoder_ptr + copied)) { 1730 ret = -EFAULT; 1731 goto out; 1732 } 1733 copied++; 1734 } 1735 } 1736 } 1737 out_resp->count_encoders = encoders_count; 1738 1739 out: 1740 mutex_unlock(&dev->mode_config.mutex); 1741 1742 return ret; 1743 } 1744 1745 int drm_mode_getencoder(struct drm_device *dev, void *data, 1746 struct drm_file *file_priv) 1747 { 1748 struct drm_mode_get_encoder *enc_resp = data; 1749 struct drm_mode_object *obj; 1750 struct drm_encoder *encoder; 1751 int ret = 0; 1752 1753 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1754 return -EINVAL; 1755 1756 drm_modeset_lock_all(dev); 1757 obj = drm_mode_object_find(dev, enc_resp->encoder_id, 1758 DRM_MODE_OBJECT_ENCODER); 1759 if (!obj) { 1760 ret = -ENOENT; 1761 goto out; 1762 } 1763 encoder = obj_to_encoder(obj); 1764 1765 if (encoder->crtc) 1766 enc_resp->crtc_id = encoder->crtc->base.id; 1767 else 1768 enc_resp->crtc_id = 0; 1769 enc_resp->encoder_type = encoder->encoder_type; 1770 enc_resp->encoder_id = encoder->base.id; 1771 enc_resp->possible_crtcs = encoder->possible_crtcs; 1772 enc_resp->possible_clones = encoder->possible_clones; 1773 1774 out: 1775 drm_modeset_unlock_all(dev); 1776 return ret; 1777 } 1778 1779 /** 1780 * drm_mode_getplane_res - get plane info 1781 * @dev: DRM device 1782 * @data: ioctl data 1783 * @file_priv: DRM file info 1784 * 1785 * Return an plane count and set of IDs. 1786 */ 1787 int drm_mode_getplane_res(struct drm_device *dev, void *data, 1788 struct drm_file *file_priv) 1789 { 1790 struct drm_mode_get_plane_res *plane_resp = data; 1791 struct drm_mode_config *config; 1792 struct drm_plane *plane; 1793 uint32_t __user *plane_ptr; 1794 int copied = 0, ret = 0; 1795 1796 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1797 return -EINVAL; 1798 1799 drm_modeset_lock_all(dev); 1800 config = &dev->mode_config; 1801 1802 /* 1803 * This ioctl is called twice, once to determine how much space is 1804 * needed, and the 2nd time to fill it. 1805 */ 1806 if (config->num_plane && 1807 (plane_resp->count_planes >= config->num_plane)) { 1808 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; 1809 1810 list_for_each_entry(plane, &config->plane_list, head) { 1811 if (put_user(plane->base.id, plane_ptr + copied)) { 1812 ret = -EFAULT; 1813 goto out; 1814 } 1815 copied++; 1816 } 1817 } 1818 plane_resp->count_planes = config->num_plane; 1819 1820 out: 1821 drm_modeset_unlock_all(dev); 1822 return ret; 1823 } 1824 1825 /** 1826 * drm_mode_getplane - get plane info 1827 * @dev: DRM device 1828 * @data: ioctl data 1829 * @file_priv: DRM file info 1830 * 1831 * Return plane info, including formats supported, gamma size, any 1832 * current fb, etc. 1833 */ 1834 int drm_mode_getplane(struct drm_device *dev, void *data, 1835 struct drm_file *file_priv) 1836 { 1837 struct drm_mode_get_plane *plane_resp = data; 1838 struct drm_mode_object *obj; 1839 struct drm_plane *plane; 1840 uint32_t __user *format_ptr; 1841 int ret = 0; 1842 1843 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1844 return -EINVAL; 1845 1846 drm_modeset_lock_all(dev); 1847 obj = drm_mode_object_find(dev, plane_resp->plane_id, 1848 DRM_MODE_OBJECT_PLANE); 1849 if (!obj) { 1850 ret = -ENOENT; 1851 goto out; 1852 } 1853 plane = obj_to_plane(obj); 1854 1855 if (plane->crtc) 1856 plane_resp->crtc_id = plane->crtc->base.id; 1857 else 1858 plane_resp->crtc_id = 0; 1859 1860 if (plane->fb) 1861 plane_resp->fb_id = plane->fb->base.id; 1862 else 1863 plane_resp->fb_id = 0; 1864 1865 plane_resp->plane_id = plane->base.id; 1866 plane_resp->possible_crtcs = plane->possible_crtcs; 1867 plane_resp->gamma_size = 0; 1868 1869 /* 1870 * This ioctl is called twice, once to determine how much space is 1871 * needed, and the 2nd time to fill it. 1872 */ 1873 if (plane->format_count && 1874 (plane_resp->count_format_types >= plane->format_count)) { 1875 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; 1876 if (copy_to_user(format_ptr, 1877 plane->format_types, 1878 sizeof(uint32_t) * plane->format_count)) { 1879 ret = -EFAULT; 1880 goto out; 1881 } 1882 } 1883 plane_resp->count_format_types = plane->format_count; 1884 1885 out: 1886 drm_modeset_unlock_all(dev); 1887 return ret; 1888 } 1889 1890 /** 1891 * drm_mode_setplane - set up or tear down an plane 1892 * @dev: DRM device 1893 * @data: ioctl data* 1894 * @file_priv: DRM file info 1895 * 1896 * Set plane info, including placement, fb, scaling, and other factors. 1897 * Or pass a NULL fb to disable. 1898 */ 1899 int drm_mode_setplane(struct drm_device *dev, void *data, 1900 struct drm_file *file_priv) 1901 { 1902 struct drm_mode_set_plane *plane_req = data; 1903 struct drm_mode_object *obj; 1904 struct drm_plane *plane; 1905 struct drm_crtc *crtc; 1906 struct drm_framebuffer *fb = NULL, *old_fb = NULL; 1907 int ret = 0; 1908 unsigned int fb_width, fb_height; 1909 int i; 1910 1911 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1912 return -EINVAL; 1913 1914 /* 1915 * First, find the plane, crtc, and fb objects. If not available, 1916 * we don't bother to call the driver. 1917 */ 1918 obj = drm_mode_object_find(dev, plane_req->plane_id, 1919 DRM_MODE_OBJECT_PLANE); 1920 if (!obj) { 1921 DRM_DEBUG_KMS("Unknown plane ID %d\n", 1922 plane_req->plane_id); 1923 return -ENOENT; 1924 } 1925 plane = obj_to_plane(obj); 1926 1927 /* No fb means shut it down */ 1928 if (!plane_req->fb_id) { 1929 drm_modeset_lock_all(dev); 1930 old_fb = plane->fb; 1931 plane->funcs->disable_plane(plane); 1932 plane->crtc = NULL; 1933 plane->fb = NULL; 1934 drm_modeset_unlock_all(dev); 1935 goto out; 1936 } 1937 1938 obj = drm_mode_object_find(dev, plane_req->crtc_id, 1939 DRM_MODE_OBJECT_CRTC); 1940 if (!obj) { 1941 DRM_DEBUG_KMS("Unknown crtc ID %d\n", 1942 plane_req->crtc_id); 1943 ret = -ENOENT; 1944 goto out; 1945 } 1946 crtc = obj_to_crtc(obj); 1947 1948 fb = drm_framebuffer_lookup(dev, plane_req->fb_id); 1949 if (!fb) { 1950 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", 1951 plane_req->fb_id); 1952 ret = -ENOENT; 1953 goto out; 1954 } 1955 1956 /* Check whether this plane supports the fb pixel format. */ 1957 for (i = 0; i < plane->format_count; i++) 1958 if (fb->pixel_format == plane->format_types[i]) 1959 break; 1960 if (i == plane->format_count) { 1961 DRM_DEBUG_KMS("Invalid pixel format %s\n", 1962 drm_get_format_name(fb->pixel_format)); 1963 ret = -EINVAL; 1964 goto out; 1965 } 1966 1967 fb_width = fb->width << 16; 1968 fb_height = fb->height << 16; 1969 1970 /* Make sure source coordinates are inside the fb. */ 1971 if (plane_req->src_w > fb_width || 1972 plane_req->src_x > fb_width - plane_req->src_w || 1973 plane_req->src_h > fb_height || 1974 plane_req->src_y > fb_height - plane_req->src_h) { 1975 DRM_DEBUG_KMS("Invalid source coordinates " 1976 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", 1977 plane_req->src_w >> 16, 1978 ((plane_req->src_w & 0xffff) * 15625) >> 10, 1979 plane_req->src_h >> 16, 1980 ((plane_req->src_h & 0xffff) * 15625) >> 10, 1981 plane_req->src_x >> 16, 1982 ((plane_req->src_x & 0xffff) * 15625) >> 10, 1983 plane_req->src_y >> 16, 1984 ((plane_req->src_y & 0xffff) * 15625) >> 10); 1985 ret = -ENOSPC; 1986 goto out; 1987 } 1988 1989 /* Give drivers some help against integer overflows */ 1990 if (plane_req->crtc_w > INT_MAX || 1991 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w || 1992 plane_req->crtc_h > INT_MAX || 1993 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) { 1994 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", 1995 plane_req->crtc_w, plane_req->crtc_h, 1996 plane_req->crtc_x, plane_req->crtc_y); 1997 ret = -ERANGE; 1998 goto out; 1999 } 2000 2001 drm_modeset_lock_all(dev); 2002 ret = plane->funcs->update_plane(plane, crtc, fb, 2003 plane_req->crtc_x, plane_req->crtc_y, 2004 plane_req->crtc_w, plane_req->crtc_h, 2005 plane_req->src_x, plane_req->src_y, 2006 plane_req->src_w, plane_req->src_h); 2007 if (!ret) { 2008 old_fb = plane->fb; 2009 plane->crtc = crtc; 2010 plane->fb = fb; 2011 fb = NULL; 2012 } 2013 drm_modeset_unlock_all(dev); 2014 2015 out: 2016 if (fb) 2017 drm_framebuffer_unreference(fb); 2018 if (old_fb) 2019 drm_framebuffer_unreference(old_fb); 2020 2021 return ret; 2022 } 2023 2024 /** 2025 * drm_mode_set_config_internal - helper to call ->set_config 2026 * @set: modeset config to set 2027 * 2028 * This is a little helper to wrap internal calls to the ->set_config driver 2029 * interface. The only thing it adds is correct refcounting dance. 2030 */ 2031 int drm_mode_set_config_internal(struct drm_mode_set *set) 2032 { 2033 struct drm_crtc *crtc = set->crtc; 2034 struct drm_framebuffer *fb; 2035 struct drm_crtc *tmp; 2036 int ret; 2037 2038 /* 2039 * NOTE: ->set_config can also disable other crtcs (if we steal all 2040 * connectors from it), hence we need to refcount the fbs across all 2041 * crtcs. Atomic modeset will have saner semantics ... 2042 */ 2043 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) 2044 tmp->old_fb = tmp->fb; 2045 2046 fb = set->fb; 2047 2048 ret = crtc->funcs->set_config(set); 2049 if (ret == 0) { 2050 /* crtc->fb must be updated by ->set_config, enforces this. */ 2051 WARN_ON(fb != crtc->fb); 2052 } 2053 2054 list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) { 2055 if (tmp->fb) 2056 drm_framebuffer_reference(tmp->fb); 2057 if (tmp->old_fb) 2058 drm_framebuffer_unreference(tmp->old_fb); 2059 } 2060 2061 return ret; 2062 } 2063 EXPORT_SYMBOL(drm_mode_set_config_internal); 2064 2065 /* 2066 * Checks that the framebuffer is big enough for the CRTC viewport 2067 * (x, y, hdisplay, vdisplay) 2068 */ 2069 static int drm_crtc_check_viewport(const struct drm_crtc *crtc, 2070 int x, int y, 2071 const struct drm_display_mode *mode, 2072 const struct drm_framebuffer *fb) 2073 2074 { 2075 int hdisplay, vdisplay; 2076 2077 hdisplay = mode->hdisplay; 2078 vdisplay = mode->vdisplay; 2079 2080 if (drm_mode_is_stereo(mode)) { 2081 struct drm_display_mode adjusted = *mode; 2082 2083 drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE); 2084 hdisplay = adjusted.crtc_hdisplay; 2085 vdisplay = adjusted.crtc_vdisplay; 2086 } 2087 2088 if (crtc->invert_dimensions) 2089 swap(hdisplay, vdisplay); 2090 2091 if (hdisplay > fb->width || 2092 vdisplay > fb->height || 2093 x > fb->width - hdisplay || 2094 y > fb->height - vdisplay) { 2095 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", 2096 fb->width, fb->height, hdisplay, vdisplay, x, y, 2097 crtc->invert_dimensions ? " (inverted)" : ""); 2098 return -ENOSPC; 2099 } 2100 2101 return 0; 2102 } 2103 2104 /** 2105 * drm_mode_setcrtc - set CRTC configuration 2106 * @dev: drm device for the ioctl 2107 * @data: data pointer for the ioctl 2108 * @file_priv: drm file for the ioctl call 2109 * 2110 * Build a new CRTC configuration based on user request. 2111 * 2112 * Called by the user via ioctl. 2113 * 2114 * RETURNS: 2115 * Zero on success, errno on failure. 2116 */ 2117 int drm_mode_setcrtc(struct drm_device *dev, void *data, 2118 struct drm_file *file_priv) 2119 { 2120 struct drm_mode_config *config = &dev->mode_config; 2121 struct drm_mode_crtc *crtc_req = data; 2122 struct drm_mode_object *obj; 2123 struct drm_crtc *crtc; 2124 struct drm_connector **connector_set = NULL, *connector; 2125 struct drm_framebuffer *fb = NULL; 2126 struct drm_display_mode *mode = NULL; 2127 struct drm_mode_set set; 2128 uint32_t __user *set_connectors_ptr; 2129 int ret; 2130 int i; 2131 2132 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2133 return -EINVAL; 2134 2135 /* For some reason crtc x/y offsets are signed internally. */ 2136 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX) 2137 return -ERANGE; 2138 2139 drm_modeset_lock_all(dev); 2140 obj = drm_mode_object_find(dev, crtc_req->crtc_id, 2141 DRM_MODE_OBJECT_CRTC); 2142 if (!obj) { 2143 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); 2144 ret = -ENOENT; 2145 goto out; 2146 } 2147 crtc = obj_to_crtc(obj); 2148 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 2149 2150 if (crtc_req->mode_valid) { 2151 /* If we have a mode we need a framebuffer. */ 2152 /* If we pass -1, set the mode with the currently bound fb */ 2153 if (crtc_req->fb_id == -1) { 2154 if (!crtc->fb) { 2155 DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); 2156 ret = -EINVAL; 2157 goto out; 2158 } 2159 fb = crtc->fb; 2160 /* Make refcounting symmetric with the lookup path. */ 2161 drm_framebuffer_reference(fb); 2162 } else { 2163 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); 2164 if (!fb) { 2165 DRM_DEBUG_KMS("Unknown FB ID%d\n", 2166 crtc_req->fb_id); 2167 ret = -ENOENT; 2168 goto out; 2169 } 2170 } 2171 2172 mode = drm_mode_create(dev); 2173 if (!mode) { 2174 ret = -ENOMEM; 2175 goto out; 2176 } 2177 2178 ret = drm_crtc_convert_umode(mode, &crtc_req->mode); 2179 if (ret) { 2180 DRM_DEBUG_KMS("Invalid mode\n"); 2181 goto out; 2182 } 2183 2184 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 2185 2186 ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, 2187 mode, fb); 2188 if (ret) 2189 goto out; 2190 2191 } 2192 2193 if (crtc_req->count_connectors == 0 && mode) { 2194 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); 2195 ret = -EINVAL; 2196 goto out; 2197 } 2198 2199 if (crtc_req->count_connectors > 0 && (!mode || !fb)) { 2200 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", 2201 crtc_req->count_connectors); 2202 ret = -EINVAL; 2203 goto out; 2204 } 2205 2206 if (crtc_req->count_connectors > 0) { 2207 u32 out_id; 2208 2209 /* Avoid unbounded kernel memory allocation */ 2210 if (crtc_req->count_connectors > config->num_connector) { 2211 ret = -EINVAL; 2212 goto out; 2213 } 2214 2215 connector_set = kmalloc(crtc_req->count_connectors * 2216 sizeof(struct drm_connector *), 2217 GFP_KERNEL); 2218 if (!connector_set) { 2219 ret = -ENOMEM; 2220 goto out; 2221 } 2222 2223 for (i = 0; i < crtc_req->count_connectors; i++) { 2224 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; 2225 if (get_user(out_id, &set_connectors_ptr[i])) { 2226 ret = -EFAULT; 2227 goto out; 2228 } 2229 2230 obj = drm_mode_object_find(dev, out_id, 2231 DRM_MODE_OBJECT_CONNECTOR); 2232 if (!obj) { 2233 DRM_DEBUG_KMS("Connector id %d unknown\n", 2234 out_id); 2235 ret = -ENOENT; 2236 goto out; 2237 } 2238 connector = obj_to_connector(obj); 2239 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 2240 connector->base.id, 2241 drm_get_connector_name(connector)); 2242 2243 connector_set[i] = connector; 2244 } 2245 } 2246 2247 set.crtc = crtc; 2248 set.x = crtc_req->x; 2249 set.y = crtc_req->y; 2250 set.mode = mode; 2251 set.connectors = connector_set; 2252 set.num_connectors = crtc_req->count_connectors; 2253 set.fb = fb; 2254 ret = drm_mode_set_config_internal(&set); 2255 2256 out: 2257 if (fb) 2258 drm_framebuffer_unreference(fb); 2259 2260 kfree(connector_set); 2261 drm_mode_destroy(dev, mode); 2262 drm_modeset_unlock_all(dev); 2263 return ret; 2264 } 2265 2266 static int drm_mode_cursor_common(struct drm_device *dev, 2267 struct drm_mode_cursor2 *req, 2268 struct drm_file *file_priv) 2269 { 2270 struct drm_mode_object *obj; 2271 struct drm_crtc *crtc; 2272 int ret = 0; 2273 2274 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2275 return -EINVAL; 2276 2277 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) 2278 return -EINVAL; 2279 2280 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC); 2281 if (!obj) { 2282 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); 2283 return -ENOENT; 2284 } 2285 crtc = obj_to_crtc(obj); 2286 2287 mutex_lock(&crtc->mutex); 2288 if (req->flags & DRM_MODE_CURSOR_BO) { 2289 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { 2290 ret = -ENXIO; 2291 goto out; 2292 } 2293 /* Turns off the cursor if handle is 0 */ 2294 if (crtc->funcs->cursor_set2) 2295 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle, 2296 req->width, req->height, req->hot_x, req->hot_y); 2297 else 2298 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, 2299 req->width, req->height); 2300 } 2301 2302 if (req->flags & DRM_MODE_CURSOR_MOVE) { 2303 if (crtc->funcs->cursor_move) { 2304 ret = crtc->funcs->cursor_move(crtc, req->x, req->y); 2305 } else { 2306 ret = -EFAULT; 2307 goto out; 2308 } 2309 } 2310 out: 2311 mutex_unlock(&crtc->mutex); 2312 2313 return ret; 2314 2315 } 2316 int drm_mode_cursor_ioctl(struct drm_device *dev, 2317 void *data, struct drm_file *file_priv) 2318 { 2319 struct drm_mode_cursor *req = data; 2320 struct drm_mode_cursor2 new_req; 2321 2322 memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); 2323 new_req.hot_x = new_req.hot_y = 0; 2324 2325 return drm_mode_cursor_common(dev, &new_req, file_priv); 2326 } 2327 2328 int drm_mode_cursor2_ioctl(struct drm_device *dev, 2329 void *data, struct drm_file *file_priv) 2330 { 2331 struct drm_mode_cursor2 *req = data; 2332 return drm_mode_cursor_common(dev, req, file_priv); 2333 } 2334 2335 /* Original addfb only supported RGB formats, so figure out which one */ 2336 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) 2337 { 2338 uint32_t fmt; 2339 2340 switch (bpp) { 2341 case 8: 2342 fmt = DRM_FORMAT_C8; 2343 break; 2344 case 16: 2345 if (depth == 15) 2346 fmt = DRM_FORMAT_XRGB1555; 2347 else 2348 fmt = DRM_FORMAT_RGB565; 2349 break; 2350 case 24: 2351 fmt = DRM_FORMAT_RGB888; 2352 break; 2353 case 32: 2354 if (depth == 24) 2355 fmt = DRM_FORMAT_XRGB8888; 2356 else if (depth == 30) 2357 fmt = DRM_FORMAT_XRGB2101010; 2358 else 2359 fmt = DRM_FORMAT_ARGB8888; 2360 break; 2361 default: 2362 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n"); 2363 fmt = DRM_FORMAT_XRGB8888; 2364 break; 2365 } 2366 2367 return fmt; 2368 } 2369 EXPORT_SYMBOL(drm_mode_legacy_fb_format); 2370 2371 /** 2372 * drm_mode_addfb - add an FB to the graphics configuration 2373 * @dev: drm device for the ioctl 2374 * @data: data pointer for the ioctl 2375 * @file_priv: drm file for the ioctl call 2376 * 2377 * Add a new FB to the specified CRTC, given a user request. 2378 * 2379 * Called by the user via ioctl. 2380 * 2381 * RETURNS: 2382 * Zero on success, errno on failure. 2383 */ 2384 int drm_mode_addfb(struct drm_device *dev, 2385 void *data, struct drm_file *file_priv) 2386 { 2387 struct drm_mode_fb_cmd *or = data; 2388 struct drm_mode_fb_cmd2 r = {}; 2389 struct drm_mode_config *config = &dev->mode_config; 2390 struct drm_framebuffer *fb; 2391 int ret = 0; 2392 2393 /* Use new struct with format internally */ 2394 r.fb_id = or->fb_id; 2395 r.width = or->width; 2396 r.height = or->height; 2397 r.pitches[0] = or->pitch; 2398 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); 2399 r.handles[0] = or->handle; 2400 2401 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2402 return -EINVAL; 2403 2404 if ((config->min_width > r.width) || (r.width > config->max_width)) 2405 return -EINVAL; 2406 2407 if ((config->min_height > r.height) || (r.height > config->max_height)) 2408 return -EINVAL; 2409 2410 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r); 2411 if (IS_ERR(fb)) { 2412 DRM_DEBUG_KMS("could not create framebuffer\n"); 2413 return PTR_ERR(fb); 2414 } 2415 2416 mutex_lock(&file_priv->fbs_lock); 2417 or->fb_id = fb->base.id; 2418 list_add(&fb->filp_head, &file_priv->fbs); 2419 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2420 mutex_unlock(&file_priv->fbs_lock); 2421 2422 return ret; 2423 } 2424 2425 static int format_check(const struct drm_mode_fb_cmd2 *r) 2426 { 2427 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN; 2428 2429 switch (format) { 2430 case DRM_FORMAT_C8: 2431 case DRM_FORMAT_RGB332: 2432 case DRM_FORMAT_BGR233: 2433 case DRM_FORMAT_XRGB4444: 2434 case DRM_FORMAT_XBGR4444: 2435 case DRM_FORMAT_RGBX4444: 2436 case DRM_FORMAT_BGRX4444: 2437 case DRM_FORMAT_ARGB4444: 2438 case DRM_FORMAT_ABGR4444: 2439 case DRM_FORMAT_RGBA4444: 2440 case DRM_FORMAT_BGRA4444: 2441 case DRM_FORMAT_XRGB1555: 2442 case DRM_FORMAT_XBGR1555: 2443 case DRM_FORMAT_RGBX5551: 2444 case DRM_FORMAT_BGRX5551: 2445 case DRM_FORMAT_ARGB1555: 2446 case DRM_FORMAT_ABGR1555: 2447 case DRM_FORMAT_RGBA5551: 2448 case DRM_FORMAT_BGRA5551: 2449 case DRM_FORMAT_RGB565: 2450 case DRM_FORMAT_BGR565: 2451 case DRM_FORMAT_RGB888: 2452 case DRM_FORMAT_BGR888: 2453 case DRM_FORMAT_XRGB8888: 2454 case DRM_FORMAT_XBGR8888: 2455 case DRM_FORMAT_RGBX8888: 2456 case DRM_FORMAT_BGRX8888: 2457 case DRM_FORMAT_ARGB8888: 2458 case DRM_FORMAT_ABGR8888: 2459 case DRM_FORMAT_RGBA8888: 2460 case DRM_FORMAT_BGRA8888: 2461 case DRM_FORMAT_XRGB2101010: 2462 case DRM_FORMAT_XBGR2101010: 2463 case DRM_FORMAT_RGBX1010102: 2464 case DRM_FORMAT_BGRX1010102: 2465 case DRM_FORMAT_ARGB2101010: 2466 case DRM_FORMAT_ABGR2101010: 2467 case DRM_FORMAT_RGBA1010102: 2468 case DRM_FORMAT_BGRA1010102: 2469 case DRM_FORMAT_YUYV: 2470 case DRM_FORMAT_YVYU: 2471 case DRM_FORMAT_UYVY: 2472 case DRM_FORMAT_VYUY: 2473 case DRM_FORMAT_AYUV: 2474 case DRM_FORMAT_NV12: 2475 case DRM_FORMAT_NV21: 2476 case DRM_FORMAT_NV16: 2477 case DRM_FORMAT_NV61: 2478 case DRM_FORMAT_NV24: 2479 case DRM_FORMAT_NV42: 2480 case DRM_FORMAT_YUV410: 2481 case DRM_FORMAT_YVU410: 2482 case DRM_FORMAT_YUV411: 2483 case DRM_FORMAT_YVU411: 2484 case DRM_FORMAT_YUV420: 2485 case DRM_FORMAT_YVU420: 2486 case DRM_FORMAT_YUV422: 2487 case DRM_FORMAT_YVU422: 2488 case DRM_FORMAT_YUV444: 2489 case DRM_FORMAT_YVU444: 2490 return 0; 2491 default: 2492 DRM_DEBUG_KMS("invalid pixel format %s\n", 2493 drm_get_format_name(r->pixel_format)); 2494 return -EINVAL; 2495 } 2496 } 2497 2498 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) 2499 { 2500 int ret, hsub, vsub, num_planes, i; 2501 2502 ret = format_check(r); 2503 if (ret) { 2504 DRM_DEBUG_KMS("bad framebuffer format %s\n", 2505 drm_get_format_name(r->pixel_format)); 2506 return ret; 2507 } 2508 2509 hsub = drm_format_horz_chroma_subsampling(r->pixel_format); 2510 vsub = drm_format_vert_chroma_subsampling(r->pixel_format); 2511 num_planes = drm_format_num_planes(r->pixel_format); 2512 2513 if (r->width == 0 || r->width % hsub) { 2514 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height); 2515 return -EINVAL; 2516 } 2517 2518 if (r->height == 0 || r->height % vsub) { 2519 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height); 2520 return -EINVAL; 2521 } 2522 2523 for (i = 0; i < num_planes; i++) { 2524 unsigned int width = r->width / (i != 0 ? hsub : 1); 2525 unsigned int height = r->height / (i != 0 ? vsub : 1); 2526 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i); 2527 2528 if (!r->handles[i]) { 2529 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i); 2530 return -EINVAL; 2531 } 2532 2533 if ((uint64_t) width * cpp > UINT_MAX) 2534 return -ERANGE; 2535 2536 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) 2537 return -ERANGE; 2538 2539 if (r->pitches[i] < width * cpp) { 2540 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i); 2541 return -EINVAL; 2542 } 2543 } 2544 2545 return 0; 2546 } 2547 2548 /** 2549 * drm_mode_addfb2 - add an FB to the graphics configuration 2550 * @dev: drm device for the ioctl 2551 * @data: data pointer for the ioctl 2552 * @file_priv: drm file for the ioctl call 2553 * 2554 * Add a new FB to the specified CRTC, given a user request with format. 2555 * 2556 * Called by the user via ioctl. 2557 * 2558 * RETURNS: 2559 * Zero on success, errno on failure. 2560 */ 2561 int drm_mode_addfb2(struct drm_device *dev, 2562 void *data, struct drm_file *file_priv) 2563 { 2564 struct drm_mode_fb_cmd2 *r = data; 2565 struct drm_mode_config *config = &dev->mode_config; 2566 struct drm_framebuffer *fb; 2567 int ret; 2568 2569 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2570 return -EINVAL; 2571 2572 if (r->flags & ~DRM_MODE_FB_INTERLACED) { 2573 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags); 2574 return -EINVAL; 2575 } 2576 2577 if ((config->min_width > r->width) || (r->width > config->max_width)) { 2578 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n", 2579 r->width, config->min_width, config->max_width); 2580 return -EINVAL; 2581 } 2582 if ((config->min_height > r->height) || (r->height > config->max_height)) { 2583 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n", 2584 r->height, config->min_height, config->max_height); 2585 return -EINVAL; 2586 } 2587 2588 ret = framebuffer_check(r); 2589 if (ret) 2590 return ret; 2591 2592 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); 2593 if (IS_ERR(fb)) { 2594 DRM_DEBUG_KMS("could not create framebuffer\n"); 2595 return PTR_ERR(fb); 2596 } 2597 2598 mutex_lock(&file_priv->fbs_lock); 2599 r->fb_id = fb->base.id; 2600 list_add(&fb->filp_head, &file_priv->fbs); 2601 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2602 mutex_unlock(&file_priv->fbs_lock); 2603 2604 2605 return ret; 2606 } 2607 2608 /** 2609 * drm_mode_rmfb - remove an FB from the configuration 2610 * @dev: drm device for the ioctl 2611 * @data: data pointer for the ioctl 2612 * @file_priv: drm file for the ioctl call 2613 * 2614 * Remove the FB specified by the user. 2615 * 2616 * Called by the user via ioctl. 2617 * 2618 * RETURNS: 2619 * Zero on success, errno on failure. 2620 */ 2621 int drm_mode_rmfb(struct drm_device *dev, 2622 void *data, struct drm_file *file_priv) 2623 { 2624 struct drm_framebuffer *fb = NULL; 2625 struct drm_framebuffer *fbl = NULL; 2626 uint32_t *id = data; 2627 int found = 0; 2628 2629 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2630 return -EINVAL; 2631 2632 mutex_lock(&file_priv->fbs_lock); 2633 mutex_lock(&dev->mode_config.fb_lock); 2634 fb = __drm_framebuffer_lookup(dev, *id); 2635 if (!fb) 2636 goto fail_lookup; 2637 2638 list_for_each_entry(fbl, &file_priv->fbs, filp_head) 2639 if (fb == fbl) 2640 found = 1; 2641 if (!found) 2642 goto fail_lookup; 2643 2644 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ 2645 __drm_framebuffer_unregister(dev, fb); 2646 2647 list_del_init(&fb->filp_head); 2648 mutex_unlock(&dev->mode_config.fb_lock); 2649 mutex_unlock(&file_priv->fbs_lock); 2650 2651 drm_framebuffer_remove(fb); 2652 2653 return 0; 2654 2655 fail_lookup: 2656 mutex_unlock(&dev->mode_config.fb_lock); 2657 mutex_unlock(&file_priv->fbs_lock); 2658 2659 return -ENOENT; 2660 } 2661 2662 /** 2663 * drm_mode_getfb - get FB info 2664 * @dev: drm device for the ioctl 2665 * @data: data pointer for the ioctl 2666 * @file_priv: drm file for the ioctl call 2667 * 2668 * Lookup the FB given its ID and return info about it. 2669 * 2670 * Called by the user via ioctl. 2671 * 2672 * RETURNS: 2673 * Zero on success, errno on failure. 2674 */ 2675 int drm_mode_getfb(struct drm_device *dev, 2676 void *data, struct drm_file *file_priv) 2677 { 2678 struct drm_mode_fb_cmd *r = data; 2679 struct drm_framebuffer *fb; 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 r->height = fb->height; 2690 r->width = fb->width; 2691 r->depth = fb->depth; 2692 r->bpp = fb->bits_per_pixel; 2693 r->pitch = fb->pitches[0]; 2694 if (fb->funcs->create_handle) { 2695 if (file_priv->is_master || capable(CAP_SYS_ADMIN)) { 2696 ret = fb->funcs->create_handle(fb, file_priv, 2697 &r->handle); 2698 } else { 2699 /* GET_FB() is an unprivileged ioctl so we must not 2700 * return a buffer-handle to non-master processes! For 2701 * backwards-compatibility reasons, we cannot make 2702 * GET_FB() privileged, so just return an invalid handle 2703 * for non-masters. */ 2704 r->handle = 0; 2705 ret = 0; 2706 } 2707 } else { 2708 ret = -ENODEV; 2709 } 2710 2711 drm_framebuffer_unreference(fb); 2712 2713 return ret; 2714 } 2715 2716 int drm_mode_dirtyfb_ioctl(struct drm_device *dev, 2717 void *data, struct drm_file *file_priv) 2718 { 2719 struct drm_clip_rect __user *clips_ptr; 2720 struct drm_clip_rect *clips = NULL; 2721 struct drm_mode_fb_dirty_cmd *r = data; 2722 struct drm_framebuffer *fb; 2723 unsigned flags; 2724 int num_clips; 2725 int ret; 2726 2727 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2728 return -EINVAL; 2729 2730 fb = drm_framebuffer_lookup(dev, r->fb_id); 2731 if (!fb) 2732 return -ENOENT; 2733 2734 num_clips = r->num_clips; 2735 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; 2736 2737 if (!num_clips != !clips_ptr) { 2738 ret = -EINVAL; 2739 goto out_err1; 2740 } 2741 2742 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; 2743 2744 /* If userspace annotates copy, clips must come in pairs */ 2745 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { 2746 ret = -EINVAL; 2747 goto out_err1; 2748 } 2749 2750 if (num_clips && clips_ptr) { 2751 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { 2752 ret = -EINVAL; 2753 goto out_err1; 2754 } 2755 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); 2756 if (!clips) { 2757 ret = -ENOMEM; 2758 goto out_err1; 2759 } 2760 2761 ret = copy_from_user(clips, clips_ptr, 2762 num_clips * sizeof(*clips)); 2763 if (ret) { 2764 ret = -EFAULT; 2765 goto out_err2; 2766 } 2767 } 2768 2769 if (fb->funcs->dirty) { 2770 drm_modeset_lock_all(dev); 2771 ret = fb->funcs->dirty(fb, file_priv, flags, r->color, 2772 clips, num_clips); 2773 drm_modeset_unlock_all(dev); 2774 } else { 2775 ret = -ENOSYS; 2776 } 2777 2778 out_err2: 2779 kfree(clips); 2780 out_err1: 2781 drm_framebuffer_unreference(fb); 2782 2783 return ret; 2784 } 2785 2786 2787 /** 2788 * drm_fb_release - remove and free the FBs on this file 2789 * @priv: drm file for the ioctl 2790 * 2791 * Destroy all the FBs associated with @filp. 2792 * 2793 * Called by the user via ioctl. 2794 * 2795 * RETURNS: 2796 * Zero on success, errno on failure. 2797 */ 2798 void drm_fb_release(struct drm_file *priv) 2799 { 2800 struct drm_device *dev = priv->minor->dev; 2801 struct drm_framebuffer *fb, *tfb; 2802 2803 mutex_lock(&priv->fbs_lock); 2804 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { 2805 2806 mutex_lock(&dev->mode_config.fb_lock); 2807 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ 2808 __drm_framebuffer_unregister(dev, fb); 2809 mutex_unlock(&dev->mode_config.fb_lock); 2810 2811 list_del_init(&fb->filp_head); 2812 2813 /* This will also drop the fpriv->fbs reference. */ 2814 drm_framebuffer_remove(fb); 2815 } 2816 mutex_unlock(&priv->fbs_lock); 2817 } 2818 2819 struct drm_property *drm_property_create(struct drm_device *dev, int flags, 2820 const char *name, int num_values) 2821 { 2822 struct drm_property *property = NULL; 2823 int ret; 2824 2825 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); 2826 if (!property) 2827 return NULL; 2828 2829 if (num_values) { 2830 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); 2831 if (!property->values) 2832 goto fail; 2833 } 2834 2835 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); 2836 if (ret) 2837 goto fail; 2838 2839 property->flags = flags; 2840 property->num_values = num_values; 2841 INIT_LIST_HEAD(&property->enum_blob_list); 2842 2843 if (name) { 2844 strncpy(property->name, name, DRM_PROP_NAME_LEN); 2845 property->name[DRM_PROP_NAME_LEN-1] = '\0'; 2846 } 2847 2848 list_add_tail(&property->head, &dev->mode_config.property_list); 2849 return property; 2850 fail: 2851 kfree(property->values); 2852 kfree(property); 2853 return NULL; 2854 } 2855 EXPORT_SYMBOL(drm_property_create); 2856 2857 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, 2858 const char *name, 2859 const struct drm_prop_enum_list *props, 2860 int num_values) 2861 { 2862 struct drm_property *property; 2863 int i, ret; 2864 2865 flags |= DRM_MODE_PROP_ENUM; 2866 2867 property = drm_property_create(dev, flags, name, num_values); 2868 if (!property) 2869 return NULL; 2870 2871 for (i = 0; i < num_values; i++) { 2872 ret = drm_property_add_enum(property, i, 2873 props[i].type, 2874 props[i].name); 2875 if (ret) { 2876 drm_property_destroy(dev, property); 2877 return NULL; 2878 } 2879 } 2880 2881 return property; 2882 } 2883 EXPORT_SYMBOL(drm_property_create_enum); 2884 2885 struct drm_property *drm_property_create_bitmask(struct drm_device *dev, 2886 int flags, const char *name, 2887 const struct drm_prop_enum_list *props, 2888 int num_values) 2889 { 2890 struct drm_property *property; 2891 int i, ret; 2892 2893 flags |= DRM_MODE_PROP_BITMASK; 2894 2895 property = drm_property_create(dev, flags, name, num_values); 2896 if (!property) 2897 return NULL; 2898 2899 for (i = 0; i < num_values; i++) { 2900 ret = drm_property_add_enum(property, i, 2901 props[i].type, 2902 props[i].name); 2903 if (ret) { 2904 drm_property_destroy(dev, property); 2905 return NULL; 2906 } 2907 } 2908 2909 return property; 2910 } 2911 EXPORT_SYMBOL(drm_property_create_bitmask); 2912 2913 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, 2914 const char *name, 2915 uint64_t min, uint64_t max) 2916 { 2917 struct drm_property *property; 2918 2919 flags |= DRM_MODE_PROP_RANGE; 2920 2921 property = drm_property_create(dev, flags, name, 2); 2922 if (!property) 2923 return NULL; 2924 2925 property->values[0] = min; 2926 property->values[1] = max; 2927 2928 return property; 2929 } 2930 EXPORT_SYMBOL(drm_property_create_range); 2931 2932 int drm_property_add_enum(struct drm_property *property, int index, 2933 uint64_t value, const char *name) 2934 { 2935 struct drm_property_enum *prop_enum; 2936 2937 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK))) 2938 return -EINVAL; 2939 2940 /* 2941 * Bitmask enum properties have the additional constraint of values 2942 * from 0 to 63 2943 */ 2944 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63)) 2945 return -EINVAL; 2946 2947 if (!list_empty(&property->enum_blob_list)) { 2948 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 2949 if (prop_enum->value == value) { 2950 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2951 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2952 return 0; 2953 } 2954 } 2955 } 2956 2957 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); 2958 if (!prop_enum) 2959 return -ENOMEM; 2960 2961 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2962 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2963 prop_enum->value = value; 2964 2965 property->values[index] = value; 2966 list_add_tail(&prop_enum->head, &property->enum_blob_list); 2967 return 0; 2968 } 2969 EXPORT_SYMBOL(drm_property_add_enum); 2970 2971 void drm_property_destroy(struct drm_device *dev, struct drm_property *property) 2972 { 2973 struct drm_property_enum *prop_enum, *pt; 2974 2975 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { 2976 list_del(&prop_enum->head); 2977 kfree(prop_enum); 2978 } 2979 2980 if (property->num_values) 2981 kfree(property->values); 2982 drm_mode_object_put(dev, &property->base); 2983 list_del(&property->head); 2984 kfree(property); 2985 } 2986 EXPORT_SYMBOL(drm_property_destroy); 2987 2988 void drm_object_attach_property(struct drm_mode_object *obj, 2989 struct drm_property *property, 2990 uint64_t init_val) 2991 { 2992 int count = obj->properties->count; 2993 2994 if (count == DRM_OBJECT_MAX_PROPERTY) { 2995 WARN(1, "Failed to attach object property (type: 0x%x). Please " 2996 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time " 2997 "you see this message on the same object type.\n", 2998 obj->type); 2999 return; 3000 } 3001 3002 obj->properties->ids[count] = property->base.id; 3003 obj->properties->values[count] = init_val; 3004 obj->properties->count++; 3005 } 3006 EXPORT_SYMBOL(drm_object_attach_property); 3007 3008 int drm_object_property_set_value(struct drm_mode_object *obj, 3009 struct drm_property *property, uint64_t val) 3010 { 3011 int i; 3012 3013 for (i = 0; i < obj->properties->count; i++) { 3014 if (obj->properties->ids[i] == property->base.id) { 3015 obj->properties->values[i] = val; 3016 return 0; 3017 } 3018 } 3019 3020 return -EINVAL; 3021 } 3022 EXPORT_SYMBOL(drm_object_property_set_value); 3023 3024 int drm_object_property_get_value(struct drm_mode_object *obj, 3025 struct drm_property *property, uint64_t *val) 3026 { 3027 int i; 3028 3029 for (i = 0; i < obj->properties->count; i++) { 3030 if (obj->properties->ids[i] == property->base.id) { 3031 *val = obj->properties->values[i]; 3032 return 0; 3033 } 3034 } 3035 3036 return -EINVAL; 3037 } 3038 EXPORT_SYMBOL(drm_object_property_get_value); 3039 3040 int drm_mode_getproperty_ioctl(struct drm_device *dev, 3041 void *data, struct drm_file *file_priv) 3042 { 3043 struct drm_mode_object *obj; 3044 struct drm_mode_get_property *out_resp = data; 3045 struct drm_property *property; 3046 int enum_count = 0; 3047 int blob_count = 0; 3048 int value_count = 0; 3049 int ret = 0, i; 3050 int copied; 3051 struct drm_property_enum *prop_enum; 3052 struct drm_mode_property_enum __user *enum_ptr; 3053 struct drm_property_blob *prop_blob; 3054 uint32_t __user *blob_id_ptr; 3055 uint64_t __user *values_ptr; 3056 uint32_t __user *blob_length_ptr; 3057 3058 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3059 return -EINVAL; 3060 3061 drm_modeset_lock_all(dev); 3062 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); 3063 if (!obj) { 3064 ret = -ENOENT; 3065 goto done; 3066 } 3067 property = obj_to_property(obj); 3068 3069 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 3070 list_for_each_entry(prop_enum, &property->enum_blob_list, head) 3071 enum_count++; 3072 } else if (property->flags & DRM_MODE_PROP_BLOB) { 3073 list_for_each_entry(prop_blob, &property->enum_blob_list, head) 3074 blob_count++; 3075 } 3076 3077 value_count = property->num_values; 3078 3079 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); 3080 out_resp->name[DRM_PROP_NAME_LEN-1] = 0; 3081 out_resp->flags = property->flags; 3082 3083 if ((out_resp->count_values >= value_count) && value_count) { 3084 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; 3085 for (i = 0; i < value_count; i++) { 3086 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { 3087 ret = -EFAULT; 3088 goto done; 3089 } 3090 } 3091 } 3092 out_resp->count_values = value_count; 3093 3094 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 3095 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { 3096 copied = 0; 3097 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; 3098 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 3099 3100 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { 3101 ret = -EFAULT; 3102 goto done; 3103 } 3104 3105 if (copy_to_user(&enum_ptr[copied].name, 3106 &prop_enum->name, DRM_PROP_NAME_LEN)) { 3107 ret = -EFAULT; 3108 goto done; 3109 } 3110 copied++; 3111 } 3112 } 3113 out_resp->count_enum_blobs = enum_count; 3114 } 3115 3116 if (property->flags & DRM_MODE_PROP_BLOB) { 3117 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { 3118 copied = 0; 3119 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr; 3120 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr; 3121 3122 list_for_each_entry(prop_blob, &property->enum_blob_list, head) { 3123 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { 3124 ret = -EFAULT; 3125 goto done; 3126 } 3127 3128 if (put_user(prop_blob->length, blob_length_ptr + copied)) { 3129 ret = -EFAULT; 3130 goto done; 3131 } 3132 3133 copied++; 3134 } 3135 } 3136 out_resp->count_enum_blobs = blob_count; 3137 } 3138 done: 3139 drm_modeset_unlock_all(dev); 3140 return ret; 3141 } 3142 3143 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, 3144 void *data) 3145 { 3146 struct drm_property_blob *blob; 3147 int ret; 3148 3149 if (!length || !data) 3150 return NULL; 3151 3152 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); 3153 if (!blob) 3154 return NULL; 3155 3156 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); 3157 if (ret) { 3158 kfree(blob); 3159 return NULL; 3160 } 3161 3162 blob->length = length; 3163 3164 memcpy(blob->data, data, length); 3165 3166 list_add_tail(&blob->head, &dev->mode_config.property_blob_list); 3167 return blob; 3168 } 3169 3170 static void drm_property_destroy_blob(struct drm_device *dev, 3171 struct drm_property_blob *blob) 3172 { 3173 drm_mode_object_put(dev, &blob->base); 3174 list_del(&blob->head); 3175 kfree(blob); 3176 } 3177 3178 int drm_mode_getblob_ioctl(struct drm_device *dev, 3179 void *data, struct drm_file *file_priv) 3180 { 3181 struct drm_mode_object *obj; 3182 struct drm_mode_get_blob *out_resp = data; 3183 struct drm_property_blob *blob; 3184 int ret = 0; 3185 void __user *blob_ptr; 3186 3187 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3188 return -EINVAL; 3189 3190 drm_modeset_lock_all(dev); 3191 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); 3192 if (!obj) { 3193 ret = -ENOENT; 3194 goto done; 3195 } 3196 blob = obj_to_blob(obj); 3197 3198 if (out_resp->length == blob->length) { 3199 blob_ptr = (void __user *)(unsigned long)out_resp->data; 3200 if (copy_to_user(blob_ptr, blob->data, blob->length)){ 3201 ret = -EFAULT; 3202 goto done; 3203 } 3204 } 3205 out_resp->length = blob->length; 3206 3207 done: 3208 drm_modeset_unlock_all(dev); 3209 return ret; 3210 } 3211 3212 int drm_mode_connector_update_edid_property(struct drm_connector *connector, 3213 struct edid *edid) 3214 { 3215 struct drm_device *dev = connector->dev; 3216 int ret, size; 3217 3218 if (connector->edid_blob_ptr) 3219 drm_property_destroy_blob(dev, connector->edid_blob_ptr); 3220 3221 /* Delete edid, when there is none. */ 3222 if (!edid) { 3223 connector->edid_blob_ptr = NULL; 3224 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0); 3225 return ret; 3226 } 3227 3228 size = EDID_LENGTH * (1 + edid->extensions); 3229 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 3230 size, edid); 3231 if (!connector->edid_blob_ptr) 3232 return -EINVAL; 3233 3234 ret = drm_object_property_set_value(&connector->base, 3235 dev->mode_config.edid_property, 3236 connector->edid_blob_ptr->base.id); 3237 3238 return ret; 3239 } 3240 EXPORT_SYMBOL(drm_mode_connector_update_edid_property); 3241 3242 static bool drm_property_change_is_valid(struct drm_property *property, 3243 uint64_t value) 3244 { 3245 if (property->flags & DRM_MODE_PROP_IMMUTABLE) 3246 return false; 3247 if (property->flags & DRM_MODE_PROP_RANGE) { 3248 if (value < property->values[0] || value > property->values[1]) 3249 return false; 3250 return true; 3251 } else if (property->flags & DRM_MODE_PROP_BITMASK) { 3252 int i; 3253 uint64_t valid_mask = 0; 3254 for (i = 0; i < property->num_values; i++) 3255 valid_mask |= (1ULL << property->values[i]); 3256 return !(value & ~valid_mask); 3257 } else if (property->flags & DRM_MODE_PROP_BLOB) { 3258 /* Only the driver knows */ 3259 return true; 3260 } else { 3261 int i; 3262 for (i = 0; i < property->num_values; i++) 3263 if (property->values[i] == value) 3264 return true; 3265 return false; 3266 } 3267 } 3268 3269 int drm_mode_connector_property_set_ioctl(struct drm_device *dev, 3270 void *data, struct drm_file *file_priv) 3271 { 3272 struct drm_mode_connector_set_property *conn_set_prop = data; 3273 struct drm_mode_obj_set_property obj_set_prop = { 3274 .value = conn_set_prop->value, 3275 .prop_id = conn_set_prop->prop_id, 3276 .obj_id = conn_set_prop->connector_id, 3277 .obj_type = DRM_MODE_OBJECT_CONNECTOR 3278 }; 3279 3280 /* It does all the locking and checking we need */ 3281 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); 3282 } 3283 3284 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, 3285 struct drm_property *property, 3286 uint64_t value) 3287 { 3288 int ret = -EINVAL; 3289 struct drm_connector *connector = obj_to_connector(obj); 3290 3291 /* Do DPMS ourselves */ 3292 if (property == connector->dev->mode_config.dpms_property) { 3293 if (connector->funcs->dpms) 3294 (*connector->funcs->dpms)(connector, (int)value); 3295 ret = 0; 3296 } else if (connector->funcs->set_property) 3297 ret = connector->funcs->set_property(connector, property, value); 3298 3299 /* store the property value if successful */ 3300 if (!ret) 3301 drm_object_property_set_value(&connector->base, property, value); 3302 return ret; 3303 } 3304 3305 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, 3306 struct drm_property *property, 3307 uint64_t value) 3308 { 3309 int ret = -EINVAL; 3310 struct drm_crtc *crtc = obj_to_crtc(obj); 3311 3312 if (crtc->funcs->set_property) 3313 ret = crtc->funcs->set_property(crtc, property, value); 3314 if (!ret) 3315 drm_object_property_set_value(obj, property, value); 3316 3317 return ret; 3318 } 3319 3320 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj, 3321 struct drm_property *property, 3322 uint64_t value) 3323 { 3324 int ret = -EINVAL; 3325 struct drm_plane *plane = obj_to_plane(obj); 3326 3327 if (plane->funcs->set_property) 3328 ret = plane->funcs->set_property(plane, property, value); 3329 if (!ret) 3330 drm_object_property_set_value(obj, property, value); 3331 3332 return ret; 3333 } 3334 3335 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, 3336 struct drm_file *file_priv) 3337 { 3338 struct drm_mode_obj_get_properties *arg = data; 3339 struct drm_mode_object *obj; 3340 int ret = 0; 3341 int i; 3342 int copied = 0; 3343 int props_count = 0; 3344 uint32_t __user *props_ptr; 3345 uint64_t __user *prop_values_ptr; 3346 3347 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3348 return -EINVAL; 3349 3350 drm_modeset_lock_all(dev); 3351 3352 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3353 if (!obj) { 3354 ret = -ENOENT; 3355 goto out; 3356 } 3357 if (!obj->properties) { 3358 ret = -EINVAL; 3359 goto out; 3360 } 3361 3362 props_count = obj->properties->count; 3363 3364 /* This ioctl is called twice, once to determine how much space is 3365 * needed, and the 2nd time to fill it. */ 3366 if ((arg->count_props >= props_count) && props_count) { 3367 copied = 0; 3368 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); 3369 prop_values_ptr = (uint64_t __user *)(unsigned long) 3370 (arg->prop_values_ptr); 3371 for (i = 0; i < props_count; i++) { 3372 if (put_user(obj->properties->ids[i], 3373 props_ptr + copied)) { 3374 ret = -EFAULT; 3375 goto out; 3376 } 3377 if (put_user(obj->properties->values[i], 3378 prop_values_ptr + copied)) { 3379 ret = -EFAULT; 3380 goto out; 3381 } 3382 copied++; 3383 } 3384 } 3385 arg->count_props = props_count; 3386 out: 3387 drm_modeset_unlock_all(dev); 3388 return ret; 3389 } 3390 3391 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, 3392 struct drm_file *file_priv) 3393 { 3394 struct drm_mode_obj_set_property *arg = data; 3395 struct drm_mode_object *arg_obj; 3396 struct drm_mode_object *prop_obj; 3397 struct drm_property *property; 3398 int ret = -EINVAL; 3399 int i; 3400 3401 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3402 return -EINVAL; 3403 3404 drm_modeset_lock_all(dev); 3405 3406 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3407 if (!arg_obj) { 3408 ret = -ENOENT; 3409 goto out; 3410 } 3411 if (!arg_obj->properties) 3412 goto out; 3413 3414 for (i = 0; i < arg_obj->properties->count; i++) 3415 if (arg_obj->properties->ids[i] == arg->prop_id) 3416 break; 3417 3418 if (i == arg_obj->properties->count) 3419 goto out; 3420 3421 prop_obj = drm_mode_object_find(dev, arg->prop_id, 3422 DRM_MODE_OBJECT_PROPERTY); 3423 if (!prop_obj) { 3424 ret = -ENOENT; 3425 goto out; 3426 } 3427 property = obj_to_property(prop_obj); 3428 3429 if (!drm_property_change_is_valid(property, arg->value)) 3430 goto out; 3431 3432 switch (arg_obj->type) { 3433 case DRM_MODE_OBJECT_CONNECTOR: 3434 ret = drm_mode_connector_set_obj_prop(arg_obj, property, 3435 arg->value); 3436 break; 3437 case DRM_MODE_OBJECT_CRTC: 3438 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value); 3439 break; 3440 case DRM_MODE_OBJECT_PLANE: 3441 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value); 3442 break; 3443 } 3444 3445 out: 3446 drm_modeset_unlock_all(dev); 3447 return ret; 3448 } 3449 3450 int drm_mode_connector_attach_encoder(struct drm_connector *connector, 3451 struct drm_encoder *encoder) 3452 { 3453 int i; 3454 3455 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3456 if (connector->encoder_ids[i] == 0) { 3457 connector->encoder_ids[i] = encoder->base.id; 3458 return 0; 3459 } 3460 } 3461 return -ENOMEM; 3462 } 3463 EXPORT_SYMBOL(drm_mode_connector_attach_encoder); 3464 3465 void drm_mode_connector_detach_encoder(struct drm_connector *connector, 3466 struct drm_encoder *encoder) 3467 { 3468 int i; 3469 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3470 if (connector->encoder_ids[i] == encoder->base.id) { 3471 connector->encoder_ids[i] = 0; 3472 if (connector->encoder == encoder) 3473 connector->encoder = NULL; 3474 break; 3475 } 3476 } 3477 } 3478 EXPORT_SYMBOL(drm_mode_connector_detach_encoder); 3479 3480 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, 3481 int gamma_size) 3482 { 3483 crtc->gamma_size = gamma_size; 3484 3485 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); 3486 if (!crtc->gamma_store) { 3487 crtc->gamma_size = 0; 3488 return -ENOMEM; 3489 } 3490 3491 return 0; 3492 } 3493 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); 3494 3495 int drm_mode_gamma_set_ioctl(struct drm_device *dev, 3496 void *data, struct drm_file *file_priv) 3497 { 3498 struct drm_mode_crtc_lut *crtc_lut = data; 3499 struct drm_mode_object *obj; 3500 struct drm_crtc *crtc; 3501 void *r_base, *g_base, *b_base; 3502 int size; 3503 int ret = 0; 3504 3505 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3506 return -EINVAL; 3507 3508 drm_modeset_lock_all(dev); 3509 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3510 if (!obj) { 3511 ret = -ENOENT; 3512 goto out; 3513 } 3514 crtc = obj_to_crtc(obj); 3515 3516 if (crtc->funcs->gamma_set == NULL) { 3517 ret = -ENOSYS; 3518 goto out; 3519 } 3520 3521 /* memcpy into gamma store */ 3522 if (crtc_lut->gamma_size != crtc->gamma_size) { 3523 ret = -EINVAL; 3524 goto out; 3525 } 3526 3527 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3528 r_base = crtc->gamma_store; 3529 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { 3530 ret = -EFAULT; 3531 goto out; 3532 } 3533 3534 g_base = r_base + size; 3535 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { 3536 ret = -EFAULT; 3537 goto out; 3538 } 3539 3540 b_base = g_base + size; 3541 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { 3542 ret = -EFAULT; 3543 goto out; 3544 } 3545 3546 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); 3547 3548 out: 3549 drm_modeset_unlock_all(dev); 3550 return ret; 3551 3552 } 3553 3554 int drm_mode_gamma_get_ioctl(struct drm_device *dev, 3555 void *data, struct drm_file *file_priv) 3556 { 3557 struct drm_mode_crtc_lut *crtc_lut = data; 3558 struct drm_mode_object *obj; 3559 struct drm_crtc *crtc; 3560 void *r_base, *g_base, *b_base; 3561 int size; 3562 int ret = 0; 3563 3564 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3565 return -EINVAL; 3566 3567 drm_modeset_lock_all(dev); 3568 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3569 if (!obj) { 3570 ret = -ENOENT; 3571 goto out; 3572 } 3573 crtc = obj_to_crtc(obj); 3574 3575 /* memcpy into gamma store */ 3576 if (crtc_lut->gamma_size != crtc->gamma_size) { 3577 ret = -EINVAL; 3578 goto out; 3579 } 3580 3581 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3582 r_base = crtc->gamma_store; 3583 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { 3584 ret = -EFAULT; 3585 goto out; 3586 } 3587 3588 g_base = r_base + size; 3589 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { 3590 ret = -EFAULT; 3591 goto out; 3592 } 3593 3594 b_base = g_base + size; 3595 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { 3596 ret = -EFAULT; 3597 goto out; 3598 } 3599 out: 3600 drm_modeset_unlock_all(dev); 3601 return ret; 3602 } 3603 3604 int drm_mode_page_flip_ioctl(struct drm_device *dev, 3605 void *data, struct drm_file *file_priv) 3606 { 3607 struct drm_mode_crtc_page_flip *page_flip = data; 3608 struct drm_mode_object *obj; 3609 struct drm_crtc *crtc; 3610 struct drm_framebuffer *fb = NULL, *old_fb = NULL; 3611 struct drm_pending_vblank_event *e = NULL; 3612 unsigned long flags; 3613 int ret = -EINVAL; 3614 3615 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || 3616 page_flip->reserved != 0) 3617 return -EINVAL; 3618 3619 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) 3620 return -EINVAL; 3621 3622 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC); 3623 if (!obj) 3624 return -ENOENT; 3625 crtc = obj_to_crtc(obj); 3626 3627 mutex_lock(&crtc->mutex); 3628 if (crtc->fb == NULL) { 3629 /* The framebuffer is currently unbound, presumably 3630 * due to a hotplug event, that userspace has not 3631 * yet discovered. 3632 */ 3633 ret = -EBUSY; 3634 goto out; 3635 } 3636 3637 if (crtc->funcs->page_flip == NULL) 3638 goto out; 3639 3640 fb = drm_framebuffer_lookup(dev, page_flip->fb_id); 3641 if (!fb) { 3642 ret = -ENOENT; 3643 goto out; 3644 } 3645 3646 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb); 3647 if (ret) 3648 goto out; 3649 3650 if (crtc->fb->pixel_format != fb->pixel_format) { 3651 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); 3652 ret = -EINVAL; 3653 goto out; 3654 } 3655 3656 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3657 ret = -ENOMEM; 3658 spin_lock_irqsave(&dev->event_lock, flags); 3659 if (file_priv->event_space < sizeof e->event) { 3660 spin_unlock_irqrestore(&dev->event_lock, flags); 3661 goto out; 3662 } 3663 file_priv->event_space -= sizeof e->event; 3664 spin_unlock_irqrestore(&dev->event_lock, flags); 3665 3666 e = kzalloc(sizeof *e, GFP_KERNEL); 3667 if (e == NULL) { 3668 spin_lock_irqsave(&dev->event_lock, flags); 3669 file_priv->event_space += sizeof e->event; 3670 spin_unlock_irqrestore(&dev->event_lock, flags); 3671 goto out; 3672 } 3673 3674 e->event.base.type = DRM_EVENT_FLIP_COMPLETE; 3675 e->event.base.length = sizeof e->event; 3676 e->event.user_data = page_flip->user_data; 3677 e->base.event = &e->event.base; 3678 e->base.file_priv = file_priv; 3679 e->base.destroy = 3680 (void (*) (struct drm_pending_event *)) kfree; 3681 } 3682 3683 old_fb = crtc->fb; 3684 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); 3685 if (ret) { 3686 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3687 spin_lock_irqsave(&dev->event_lock, flags); 3688 file_priv->event_space += sizeof e->event; 3689 spin_unlock_irqrestore(&dev->event_lock, flags); 3690 kfree(e); 3691 } 3692 /* Keep the old fb, don't unref it. */ 3693 old_fb = NULL; 3694 } else { 3695 /* 3696 * Warn if the driver hasn't properly updated the crtc->fb 3697 * field to reflect that the new framebuffer is now used. 3698 * Failing to do so will screw with the reference counting 3699 * on framebuffers. 3700 */ 3701 WARN_ON(crtc->fb != fb); 3702 /* Unref only the old framebuffer. */ 3703 fb = NULL; 3704 } 3705 3706 out: 3707 if (fb) 3708 drm_framebuffer_unreference(fb); 3709 if (old_fb) 3710 drm_framebuffer_unreference(old_fb); 3711 mutex_unlock(&crtc->mutex); 3712 3713 return ret; 3714 } 3715 3716 void drm_mode_config_reset(struct drm_device *dev) 3717 { 3718 struct drm_crtc *crtc; 3719 struct drm_encoder *encoder; 3720 struct drm_connector *connector; 3721 3722 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 3723 if (crtc->funcs->reset) 3724 crtc->funcs->reset(crtc); 3725 3726 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 3727 if (encoder->funcs->reset) 3728 encoder->funcs->reset(encoder); 3729 3730 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 3731 connector->status = connector_status_unknown; 3732 3733 if (connector->funcs->reset) 3734 connector->funcs->reset(connector); 3735 } 3736 } 3737 EXPORT_SYMBOL(drm_mode_config_reset); 3738 3739 int drm_mode_create_dumb_ioctl(struct drm_device *dev, 3740 void *data, struct drm_file *file_priv) 3741 { 3742 struct drm_mode_create_dumb *args = data; 3743 3744 if (!dev->driver->dumb_create) 3745 return -ENOSYS; 3746 return dev->driver->dumb_create(file_priv, dev, args); 3747 } 3748 3749 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, 3750 void *data, struct drm_file *file_priv) 3751 { 3752 struct drm_mode_map_dumb *args = data; 3753 3754 /* call driver ioctl to get mmap offset */ 3755 if (!dev->driver->dumb_map_offset) 3756 return -ENOSYS; 3757 3758 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); 3759 } 3760 3761 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, 3762 void *data, struct drm_file *file_priv) 3763 { 3764 struct drm_mode_destroy_dumb *args = data; 3765 3766 if (!dev->driver->dumb_destroy) 3767 return -ENOSYS; 3768 3769 return dev->driver->dumb_destroy(file_priv, dev, args->handle); 3770 } 3771 3772 /* 3773 * Just need to support RGB formats here for compat with code that doesn't 3774 * use pixel formats directly yet. 3775 */ 3776 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, 3777 int *bpp) 3778 { 3779 switch (format) { 3780 case DRM_FORMAT_C8: 3781 case DRM_FORMAT_RGB332: 3782 case DRM_FORMAT_BGR233: 3783 *depth = 8; 3784 *bpp = 8; 3785 break; 3786 case DRM_FORMAT_XRGB1555: 3787 case DRM_FORMAT_XBGR1555: 3788 case DRM_FORMAT_RGBX5551: 3789 case DRM_FORMAT_BGRX5551: 3790 case DRM_FORMAT_ARGB1555: 3791 case DRM_FORMAT_ABGR1555: 3792 case DRM_FORMAT_RGBA5551: 3793 case DRM_FORMAT_BGRA5551: 3794 *depth = 15; 3795 *bpp = 16; 3796 break; 3797 case DRM_FORMAT_RGB565: 3798 case DRM_FORMAT_BGR565: 3799 *depth = 16; 3800 *bpp = 16; 3801 break; 3802 case DRM_FORMAT_RGB888: 3803 case DRM_FORMAT_BGR888: 3804 *depth = 24; 3805 *bpp = 24; 3806 break; 3807 case DRM_FORMAT_XRGB8888: 3808 case DRM_FORMAT_XBGR8888: 3809 case DRM_FORMAT_RGBX8888: 3810 case DRM_FORMAT_BGRX8888: 3811 *depth = 24; 3812 *bpp = 32; 3813 break; 3814 case DRM_FORMAT_XRGB2101010: 3815 case DRM_FORMAT_XBGR2101010: 3816 case DRM_FORMAT_RGBX1010102: 3817 case DRM_FORMAT_BGRX1010102: 3818 case DRM_FORMAT_ARGB2101010: 3819 case DRM_FORMAT_ABGR2101010: 3820 case DRM_FORMAT_RGBA1010102: 3821 case DRM_FORMAT_BGRA1010102: 3822 *depth = 30; 3823 *bpp = 32; 3824 break; 3825 case DRM_FORMAT_ARGB8888: 3826 case DRM_FORMAT_ABGR8888: 3827 case DRM_FORMAT_RGBA8888: 3828 case DRM_FORMAT_BGRA8888: 3829 *depth = 32; 3830 *bpp = 32; 3831 break; 3832 default: 3833 DRM_DEBUG_KMS("unsupported pixel format %s\n", 3834 drm_get_format_name(format)); 3835 *depth = 0; 3836 *bpp = 0; 3837 break; 3838 } 3839 } 3840 EXPORT_SYMBOL(drm_fb_get_bpp_depth); 3841 3842 /** 3843 * drm_format_num_planes - get the number of planes for format 3844 * @format: pixel format (DRM_FORMAT_*) 3845 * 3846 * RETURNS: 3847 * The number of planes used by the specified pixel format. 3848 */ 3849 int drm_format_num_planes(uint32_t format) 3850 { 3851 switch (format) { 3852 case DRM_FORMAT_YUV410: 3853 case DRM_FORMAT_YVU410: 3854 case DRM_FORMAT_YUV411: 3855 case DRM_FORMAT_YVU411: 3856 case DRM_FORMAT_YUV420: 3857 case DRM_FORMAT_YVU420: 3858 case DRM_FORMAT_YUV422: 3859 case DRM_FORMAT_YVU422: 3860 case DRM_FORMAT_YUV444: 3861 case DRM_FORMAT_YVU444: 3862 return 3; 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 2; 3870 default: 3871 return 1; 3872 } 3873 } 3874 EXPORT_SYMBOL(drm_format_num_planes); 3875 3876 /** 3877 * drm_format_plane_cpp - determine the bytes per pixel value 3878 * @format: pixel format (DRM_FORMAT_*) 3879 * @plane: plane index 3880 * 3881 * RETURNS: 3882 * The bytes per pixel value for the specified plane. 3883 */ 3884 int drm_format_plane_cpp(uint32_t format, int plane) 3885 { 3886 unsigned int depth; 3887 int bpp; 3888 3889 if (plane >= drm_format_num_planes(format)) 3890 return 0; 3891 3892 switch (format) { 3893 case DRM_FORMAT_YUYV: 3894 case DRM_FORMAT_YVYU: 3895 case DRM_FORMAT_UYVY: 3896 case DRM_FORMAT_VYUY: 3897 return 2; 3898 case DRM_FORMAT_NV12: 3899 case DRM_FORMAT_NV21: 3900 case DRM_FORMAT_NV16: 3901 case DRM_FORMAT_NV61: 3902 case DRM_FORMAT_NV24: 3903 case DRM_FORMAT_NV42: 3904 return plane ? 2 : 1; 3905 case DRM_FORMAT_YUV410: 3906 case DRM_FORMAT_YVU410: 3907 case DRM_FORMAT_YUV411: 3908 case DRM_FORMAT_YVU411: 3909 case DRM_FORMAT_YUV420: 3910 case DRM_FORMAT_YVU420: 3911 case DRM_FORMAT_YUV422: 3912 case DRM_FORMAT_YVU422: 3913 case DRM_FORMAT_YUV444: 3914 case DRM_FORMAT_YVU444: 3915 return 1; 3916 default: 3917 drm_fb_get_bpp_depth(format, &depth, &bpp); 3918 return bpp >> 3; 3919 } 3920 } 3921 EXPORT_SYMBOL(drm_format_plane_cpp); 3922 3923 /** 3924 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor 3925 * @format: pixel format (DRM_FORMAT_*) 3926 * 3927 * RETURNS: 3928 * The horizontal chroma subsampling factor for the 3929 * specified pixel format. 3930 */ 3931 int drm_format_horz_chroma_subsampling(uint32_t format) 3932 { 3933 switch (format) { 3934 case DRM_FORMAT_YUV411: 3935 case DRM_FORMAT_YVU411: 3936 case DRM_FORMAT_YUV410: 3937 case DRM_FORMAT_YVU410: 3938 return 4; 3939 case DRM_FORMAT_YUYV: 3940 case DRM_FORMAT_YVYU: 3941 case DRM_FORMAT_UYVY: 3942 case DRM_FORMAT_VYUY: 3943 case DRM_FORMAT_NV12: 3944 case DRM_FORMAT_NV21: 3945 case DRM_FORMAT_NV16: 3946 case DRM_FORMAT_NV61: 3947 case DRM_FORMAT_YUV422: 3948 case DRM_FORMAT_YVU422: 3949 case DRM_FORMAT_YUV420: 3950 case DRM_FORMAT_YVU420: 3951 return 2; 3952 default: 3953 return 1; 3954 } 3955 } 3956 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling); 3957 3958 /** 3959 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor 3960 * @format: pixel format (DRM_FORMAT_*) 3961 * 3962 * RETURNS: 3963 * The vertical chroma subsampling factor for the 3964 * specified pixel format. 3965 */ 3966 int drm_format_vert_chroma_subsampling(uint32_t format) 3967 { 3968 switch (format) { 3969 case DRM_FORMAT_YUV410: 3970 case DRM_FORMAT_YVU410: 3971 return 4; 3972 case DRM_FORMAT_YUV420: 3973 case DRM_FORMAT_YVU420: 3974 case DRM_FORMAT_NV12: 3975 case DRM_FORMAT_NV21: 3976 return 2; 3977 default: 3978 return 1; 3979 } 3980 } 3981 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); 3982 3983 /** 3984 * drm_mode_config_init - initialize DRM mode_configuration structure 3985 * @dev: DRM device 3986 * 3987 * Initialize @dev's mode_config structure, used for tracking the graphics 3988 * configuration of @dev. 3989 * 3990 * Since this initializes the modeset locks, no locking is possible. Which is no 3991 * problem, since this should happen single threaded at init time. It is the 3992 * driver's problem to ensure this guarantee. 3993 * 3994 */ 3995 void drm_mode_config_init(struct drm_device *dev) 3996 { 3997 mutex_init(&dev->mode_config.mutex); 3998 mutex_init(&dev->mode_config.idr_mutex); 3999 mutex_init(&dev->mode_config.fb_lock); 4000 INIT_LIST_HEAD(&dev->mode_config.fb_list); 4001 INIT_LIST_HEAD(&dev->mode_config.crtc_list); 4002 INIT_LIST_HEAD(&dev->mode_config.connector_list); 4003 INIT_LIST_HEAD(&dev->mode_config.bridge_list); 4004 INIT_LIST_HEAD(&dev->mode_config.encoder_list); 4005 INIT_LIST_HEAD(&dev->mode_config.property_list); 4006 INIT_LIST_HEAD(&dev->mode_config.property_blob_list); 4007 INIT_LIST_HEAD(&dev->mode_config.plane_list); 4008 idr_init(&dev->mode_config.crtc_idr); 4009 4010 drm_modeset_lock_all(dev); 4011 drm_mode_create_standard_connector_properties(dev); 4012 drm_modeset_unlock_all(dev); 4013 4014 /* Just to be sure */ 4015 dev->mode_config.num_fb = 0; 4016 dev->mode_config.num_connector = 0; 4017 dev->mode_config.num_crtc = 0; 4018 dev->mode_config.num_encoder = 0; 4019 } 4020 EXPORT_SYMBOL(drm_mode_config_init); 4021 4022 /** 4023 * drm_mode_config_cleanup - free up DRM mode_config info 4024 * @dev: DRM device 4025 * 4026 * Free up all the connectors and CRTCs associated with this DRM device, then 4027 * free up the framebuffers and associated buffer objects. 4028 * 4029 * Note that since this /should/ happen single-threaded at driver/device 4030 * teardown time, no locking is required. It's the driver's job to ensure that 4031 * this guarantee actually holds true. 4032 * 4033 * FIXME: cleanup any dangling user buffer objects too 4034 */ 4035 void drm_mode_config_cleanup(struct drm_device *dev) 4036 { 4037 struct drm_connector *connector, *ot; 4038 struct drm_crtc *crtc, *ct; 4039 struct drm_encoder *encoder, *enct; 4040 struct drm_bridge *bridge, *brt; 4041 struct drm_framebuffer *fb, *fbt; 4042 struct drm_property *property, *pt; 4043 struct drm_property_blob *blob, *bt; 4044 struct drm_plane *plane, *plt; 4045 4046 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, 4047 head) { 4048 encoder->funcs->destroy(encoder); 4049 } 4050 4051 list_for_each_entry_safe(bridge, brt, 4052 &dev->mode_config.bridge_list, head) { 4053 bridge->funcs->destroy(bridge); 4054 } 4055 4056 list_for_each_entry_safe(connector, ot, 4057 &dev->mode_config.connector_list, head) { 4058 connector->funcs->destroy(connector); 4059 } 4060 4061 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, 4062 head) { 4063 drm_property_destroy(dev, property); 4064 } 4065 4066 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, 4067 head) { 4068 drm_property_destroy_blob(dev, blob); 4069 } 4070 4071 /* 4072 * Single-threaded teardown context, so it's not required to grab the 4073 * fb_lock to protect against concurrent fb_list access. Contrary, it 4074 * would actually deadlock with the drm_framebuffer_cleanup function. 4075 * 4076 * Also, if there are any framebuffers left, that's a driver leak now, 4077 * so politely WARN about this. 4078 */ 4079 WARN_ON(!list_empty(&dev->mode_config.fb_list)); 4080 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { 4081 drm_framebuffer_remove(fb); 4082 } 4083 4084 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, 4085 head) { 4086 plane->funcs->destroy(plane); 4087 } 4088 4089 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { 4090 crtc->funcs->destroy(crtc); 4091 } 4092 4093 idr_destroy(&dev->mode_config.crtc_idr); 4094 } 4095 EXPORT_SYMBOL(drm_mode_config_cleanup); 4096