drm_crtc.c revision 5848ad409c1817f5b70507e6b4440fcbd002f6c5
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 */ 48void 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} 57EXPORT_SYMBOL(drm_modeset_lock_all); 58 59/** 60 * drm_modeset_unlock_all - drop all modeset locks 61 * @dev: device 62 */ 63void 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} 72EXPORT_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 */ 78void 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} 91EXPORT_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 */ 108static 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 115DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) 116 117/* 118 * Optional properties 119 */ 120static 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 */ 131static 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 138DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) 139 140static 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 147DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, 148 drm_dvi_i_subconnector_enum_list) 149 150static 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 159DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) 160 161static 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 170DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, 171 drm_tv_subconnector_enum_list) 172 173static 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 179struct 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 */ 188static 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 208static 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 218void 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 226void 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 234const 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} 243EXPORT_SYMBOL(drm_get_encoder_name); 244 245const 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} 254EXPORT_SYMBOL(drm_get_connector_name); 255 256const 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} 265EXPORT_SYMBOL(drm_get_connector_status_name); 266 267static char printable_char(int c) 268{ 269 return isascii(c) && isprint(c) ? c : '?'; 270} 271 272const 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} 287EXPORT_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 */ 302static 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 */ 329static 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 */ 346struct 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} 363EXPORT_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 */ 383int 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); 403out: 404 mutex_unlock(&dev->mode_config.fb_lock); 405 406 return 0; 407} 408EXPORT_SYMBOL(drm_framebuffer_init); 409 410static 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 417static 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 */ 443struct 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} 456EXPORT_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 */ 464void 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} 469EXPORT_SYMBOL(drm_framebuffer_unreference); 470 471/** 472 * drm_framebuffer_reference - incr the fb refcnt 473 * @fb: framebuffer 474 */ 475void drm_framebuffer_reference(struct drm_framebuffer *fb) 476{ 477 DRM_DEBUG("FB ID: %d\n", fb->base.id); 478 kref_get(&fb->refcount); 479} 480EXPORT_SYMBOL(drm_framebuffer_reference); 481 482static void drm_framebuffer_free_bug(struct kref *kref) 483{ 484 BUG(); 485} 486 487static 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! */ 494static 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 */ 515void 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} 524EXPORT_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 */ 542void 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} 551EXPORT_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 */ 565void 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} 614EXPORT_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 */ 627int 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} 654EXPORT_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 */ 664void 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} 675EXPORT_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 */ 684void 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} 689EXPORT_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 */ 698static 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 */ 718int 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} 765EXPORT_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 */ 773void 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} 791EXPORT_SYMBOL(drm_connector_cleanup); 792 793void 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} 802EXPORT_SYMBOL(drm_connector_unplug_all); 803 804int 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} 825EXPORT_SYMBOL(drm_bridge_init); 826 827void 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} 837EXPORT_SYMBOL(drm_bridge_cleanup); 838 839int 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} 864EXPORT_SYMBOL(drm_encoder_init); 865 866void 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} 875EXPORT_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 */ 892int 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} 938EXPORT_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 */ 948void 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} 962EXPORT_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 */ 973void 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} 988EXPORT_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 */ 999struct 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} 1014EXPORT_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 */ 1023void 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} 1032EXPORT_SYMBOL(drm_mode_destroy); 1033 1034static 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 */ 1061int 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} 1084EXPORT_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 */ 1097int 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} 1165EXPORT_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 */ 1174int 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} 1190EXPORT_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 */ 1199int 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} 1215EXPORT_SYMBOL(drm_mode_create_dirty_info_property); 1216 1217static 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 1237int 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} 1267EXPORT_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 */ 1277static 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_to_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 */ 1316static 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 */ 1359int 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 1526out: 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 */ 1544int 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 = -EINVAL; 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 1582out: 1583 drm_modeset_unlock_all(dev); 1584 return ret; 1585} 1586 1587static 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 */ 1613int 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 = -EINVAL; 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 1739out: 1740 mutex_unlock(&dev->mode_config.mutex); 1741 1742 return ret; 1743} 1744 1745int 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 = -EINVAL; 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 1774out: 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 */ 1787int 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 1820out: 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 */ 1834int 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 1885out: 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 */ 1899int 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 2015out: 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 */ 2031int 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} 2063EXPORT_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 */ 2069static 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 */ 2117int 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 = -EINVAL; 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 = -EINVAL; 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 = -EINVAL; 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 2256out: 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 2266static 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 -EINVAL; 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 } 2310out: 2311 mutex_unlock(&crtc->mutex); 2312 2313 return ret; 2314 2315} 2316int 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 2328int 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 */ 2336uint32_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} 2369EXPORT_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 */ 2384int 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 2425static 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 return -EINVAL; 2493 } 2494} 2495 2496static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) 2497{ 2498 int ret, hsub, vsub, num_planes, i; 2499 2500 ret = format_check(r); 2501 if (ret) { 2502 DRM_DEBUG_KMS("bad framebuffer format %s\n", 2503 drm_get_format_name(r->pixel_format)); 2504 return ret; 2505 } 2506 2507 hsub = drm_format_horz_chroma_subsampling(r->pixel_format); 2508 vsub = drm_format_vert_chroma_subsampling(r->pixel_format); 2509 num_planes = drm_format_num_planes(r->pixel_format); 2510 2511 if (r->width == 0 || r->width % hsub) { 2512 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height); 2513 return -EINVAL; 2514 } 2515 2516 if (r->height == 0 || r->height % vsub) { 2517 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height); 2518 return -EINVAL; 2519 } 2520 2521 for (i = 0; i < num_planes; i++) { 2522 unsigned int width = r->width / (i != 0 ? hsub : 1); 2523 unsigned int height = r->height / (i != 0 ? vsub : 1); 2524 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i); 2525 2526 if (!r->handles[i]) { 2527 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i); 2528 return -EINVAL; 2529 } 2530 2531 if ((uint64_t) width * cpp > UINT_MAX) 2532 return -ERANGE; 2533 2534 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) 2535 return -ERANGE; 2536 2537 if (r->pitches[i] < width * cpp) { 2538 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i); 2539 return -EINVAL; 2540 } 2541 } 2542 2543 return 0; 2544} 2545 2546/** 2547 * drm_mode_addfb2 - add an FB to the graphics configuration 2548 * @dev: drm device for the ioctl 2549 * @data: data pointer for the ioctl 2550 * @file_priv: drm file for the ioctl call 2551 * 2552 * Add a new FB to the specified CRTC, given a user request with format. 2553 * 2554 * Called by the user via ioctl. 2555 * 2556 * RETURNS: 2557 * Zero on success, errno on failure. 2558 */ 2559int drm_mode_addfb2(struct drm_device *dev, 2560 void *data, struct drm_file *file_priv) 2561{ 2562 struct drm_mode_fb_cmd2 *r = data; 2563 struct drm_mode_config *config = &dev->mode_config; 2564 struct drm_framebuffer *fb; 2565 int ret; 2566 2567 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2568 return -EINVAL; 2569 2570 if (r->flags & ~DRM_MODE_FB_INTERLACED) { 2571 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags); 2572 return -EINVAL; 2573 } 2574 2575 if ((config->min_width > r->width) || (r->width > config->max_width)) { 2576 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n", 2577 r->width, config->min_width, config->max_width); 2578 return -EINVAL; 2579 } 2580 if ((config->min_height > r->height) || (r->height > config->max_height)) { 2581 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n", 2582 r->height, config->min_height, config->max_height); 2583 return -EINVAL; 2584 } 2585 2586 ret = framebuffer_check(r); 2587 if (ret) 2588 return ret; 2589 2590 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); 2591 if (IS_ERR(fb)) { 2592 DRM_DEBUG_KMS("could not create framebuffer\n"); 2593 return PTR_ERR(fb); 2594 } 2595 2596 mutex_lock(&file_priv->fbs_lock); 2597 r->fb_id = fb->base.id; 2598 list_add(&fb->filp_head, &file_priv->fbs); 2599 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2600 mutex_unlock(&file_priv->fbs_lock); 2601 2602 2603 return ret; 2604} 2605 2606/** 2607 * drm_mode_rmfb - remove an FB from the configuration 2608 * @dev: drm device for the ioctl 2609 * @data: data pointer for the ioctl 2610 * @file_priv: drm file for the ioctl call 2611 * 2612 * Remove the FB specified by the user. 2613 * 2614 * Called by the user via ioctl. 2615 * 2616 * RETURNS: 2617 * Zero on success, errno on failure. 2618 */ 2619int drm_mode_rmfb(struct drm_device *dev, 2620 void *data, struct drm_file *file_priv) 2621{ 2622 struct drm_framebuffer *fb = NULL; 2623 struct drm_framebuffer *fbl = NULL; 2624 uint32_t *id = data; 2625 int found = 0; 2626 2627 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2628 return -EINVAL; 2629 2630 mutex_lock(&file_priv->fbs_lock); 2631 mutex_lock(&dev->mode_config.fb_lock); 2632 fb = __drm_framebuffer_lookup(dev, *id); 2633 if (!fb) 2634 goto fail_lookup; 2635 2636 list_for_each_entry(fbl, &file_priv->fbs, filp_head) 2637 if (fb == fbl) 2638 found = 1; 2639 if (!found) 2640 goto fail_lookup; 2641 2642 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ 2643 __drm_framebuffer_unregister(dev, fb); 2644 2645 list_del_init(&fb->filp_head); 2646 mutex_unlock(&dev->mode_config.fb_lock); 2647 mutex_unlock(&file_priv->fbs_lock); 2648 2649 drm_framebuffer_remove(fb); 2650 2651 return 0; 2652 2653fail_lookup: 2654 mutex_unlock(&dev->mode_config.fb_lock); 2655 mutex_unlock(&file_priv->fbs_lock); 2656 2657 return -EINVAL; 2658} 2659 2660/** 2661 * drm_mode_getfb - get FB info 2662 * @dev: drm device for the ioctl 2663 * @data: data pointer for the ioctl 2664 * @file_priv: drm file for the ioctl call 2665 * 2666 * Lookup the FB given its ID and return info about it. 2667 * 2668 * Called by the user via ioctl. 2669 * 2670 * RETURNS: 2671 * Zero on success, errno on failure. 2672 */ 2673int drm_mode_getfb(struct drm_device *dev, 2674 void *data, struct drm_file *file_priv) 2675{ 2676 struct drm_mode_fb_cmd *r = data; 2677 struct drm_framebuffer *fb; 2678 int ret; 2679 2680 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2681 return -EINVAL; 2682 2683 fb = drm_framebuffer_lookup(dev, r->fb_id); 2684 if (!fb) 2685 return -EINVAL; 2686 2687 r->height = fb->height; 2688 r->width = fb->width; 2689 r->depth = fb->depth; 2690 r->bpp = fb->bits_per_pixel; 2691 r->pitch = fb->pitches[0]; 2692 if (fb->funcs->create_handle) { 2693 if (file_priv->is_master || capable(CAP_SYS_ADMIN)) { 2694 ret = fb->funcs->create_handle(fb, file_priv, 2695 &r->handle); 2696 } else { 2697 /* GET_FB() is an unprivileged ioctl so we must not 2698 * return a buffer-handle to non-master processes! For 2699 * backwards-compatibility reasons, we cannot make 2700 * GET_FB() privileged, so just return an invalid handle 2701 * for non-masters. */ 2702 r->handle = 0; 2703 ret = 0; 2704 } 2705 } else { 2706 ret = -ENODEV; 2707 } 2708 2709 drm_framebuffer_unreference(fb); 2710 2711 return ret; 2712} 2713 2714int drm_mode_dirtyfb_ioctl(struct drm_device *dev, 2715 void *data, struct drm_file *file_priv) 2716{ 2717 struct drm_clip_rect __user *clips_ptr; 2718 struct drm_clip_rect *clips = NULL; 2719 struct drm_mode_fb_dirty_cmd *r = data; 2720 struct drm_framebuffer *fb; 2721 unsigned flags; 2722 int num_clips; 2723 int ret; 2724 2725 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2726 return -EINVAL; 2727 2728 fb = drm_framebuffer_lookup(dev, r->fb_id); 2729 if (!fb) 2730 return -EINVAL; 2731 2732 num_clips = r->num_clips; 2733 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; 2734 2735 if (!num_clips != !clips_ptr) { 2736 ret = -EINVAL; 2737 goto out_err1; 2738 } 2739 2740 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; 2741 2742 /* If userspace annotates copy, clips must come in pairs */ 2743 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { 2744 ret = -EINVAL; 2745 goto out_err1; 2746 } 2747 2748 if (num_clips && clips_ptr) { 2749 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { 2750 ret = -EINVAL; 2751 goto out_err1; 2752 } 2753 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); 2754 if (!clips) { 2755 ret = -ENOMEM; 2756 goto out_err1; 2757 } 2758 2759 ret = copy_from_user(clips, clips_ptr, 2760 num_clips * sizeof(*clips)); 2761 if (ret) { 2762 ret = -EFAULT; 2763 goto out_err2; 2764 } 2765 } 2766 2767 if (fb->funcs->dirty) { 2768 drm_modeset_lock_all(dev); 2769 ret = fb->funcs->dirty(fb, file_priv, flags, r->color, 2770 clips, num_clips); 2771 drm_modeset_unlock_all(dev); 2772 } else { 2773 ret = -ENOSYS; 2774 } 2775 2776out_err2: 2777 kfree(clips); 2778out_err1: 2779 drm_framebuffer_unreference(fb); 2780 2781 return ret; 2782} 2783 2784 2785/** 2786 * drm_fb_release - remove and free the FBs on this file 2787 * @priv: drm file for the ioctl 2788 * 2789 * Destroy all the FBs associated with @filp. 2790 * 2791 * Called by the user via ioctl. 2792 * 2793 * RETURNS: 2794 * Zero on success, errno on failure. 2795 */ 2796void drm_fb_release(struct drm_file *priv) 2797{ 2798 struct drm_device *dev = priv->minor->dev; 2799 struct drm_framebuffer *fb, *tfb; 2800 2801 mutex_lock(&priv->fbs_lock); 2802 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { 2803 2804 mutex_lock(&dev->mode_config.fb_lock); 2805 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ 2806 __drm_framebuffer_unregister(dev, fb); 2807 mutex_unlock(&dev->mode_config.fb_lock); 2808 2809 list_del_init(&fb->filp_head); 2810 2811 /* This will also drop the fpriv->fbs reference. */ 2812 drm_framebuffer_remove(fb); 2813 } 2814 mutex_unlock(&priv->fbs_lock); 2815} 2816 2817struct drm_property *drm_property_create(struct drm_device *dev, int flags, 2818 const char *name, int num_values) 2819{ 2820 struct drm_property *property = NULL; 2821 int ret; 2822 2823 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); 2824 if (!property) 2825 return NULL; 2826 2827 if (num_values) { 2828 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); 2829 if (!property->values) 2830 goto fail; 2831 } 2832 2833 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); 2834 if (ret) 2835 goto fail; 2836 2837 property->flags = flags; 2838 property->num_values = num_values; 2839 INIT_LIST_HEAD(&property->enum_blob_list); 2840 2841 if (name) { 2842 strncpy(property->name, name, DRM_PROP_NAME_LEN); 2843 property->name[DRM_PROP_NAME_LEN-1] = '\0'; 2844 } 2845 2846 list_add_tail(&property->head, &dev->mode_config.property_list); 2847 return property; 2848fail: 2849 kfree(property->values); 2850 kfree(property); 2851 return NULL; 2852} 2853EXPORT_SYMBOL(drm_property_create); 2854 2855struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, 2856 const char *name, 2857 const struct drm_prop_enum_list *props, 2858 int num_values) 2859{ 2860 struct drm_property *property; 2861 int i, ret; 2862 2863 flags |= DRM_MODE_PROP_ENUM; 2864 2865 property = drm_property_create(dev, flags, name, num_values); 2866 if (!property) 2867 return NULL; 2868 2869 for (i = 0; i < num_values; i++) { 2870 ret = drm_property_add_enum(property, i, 2871 props[i].type, 2872 props[i].name); 2873 if (ret) { 2874 drm_property_destroy(dev, property); 2875 return NULL; 2876 } 2877 } 2878 2879 return property; 2880} 2881EXPORT_SYMBOL(drm_property_create_enum); 2882 2883struct drm_property *drm_property_create_bitmask(struct drm_device *dev, 2884 int flags, const char *name, 2885 const struct drm_prop_enum_list *props, 2886 int num_values) 2887{ 2888 struct drm_property *property; 2889 int i, ret; 2890 2891 flags |= DRM_MODE_PROP_BITMASK; 2892 2893 property = drm_property_create(dev, flags, name, num_values); 2894 if (!property) 2895 return NULL; 2896 2897 for (i = 0; i < num_values; i++) { 2898 ret = drm_property_add_enum(property, i, 2899 props[i].type, 2900 props[i].name); 2901 if (ret) { 2902 drm_property_destroy(dev, property); 2903 return NULL; 2904 } 2905 } 2906 2907 return property; 2908} 2909EXPORT_SYMBOL(drm_property_create_bitmask); 2910 2911struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, 2912 const char *name, 2913 uint64_t min, uint64_t max) 2914{ 2915 struct drm_property *property; 2916 2917 flags |= DRM_MODE_PROP_RANGE; 2918 2919 property = drm_property_create(dev, flags, name, 2); 2920 if (!property) 2921 return NULL; 2922 2923 property->values[0] = min; 2924 property->values[1] = max; 2925 2926 return property; 2927} 2928EXPORT_SYMBOL(drm_property_create_range); 2929 2930int drm_property_add_enum(struct drm_property *property, int index, 2931 uint64_t value, const char *name) 2932{ 2933 struct drm_property_enum *prop_enum; 2934 2935 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK))) 2936 return -EINVAL; 2937 2938 /* 2939 * Bitmask enum properties have the additional constraint of values 2940 * from 0 to 63 2941 */ 2942 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63)) 2943 return -EINVAL; 2944 2945 if (!list_empty(&property->enum_blob_list)) { 2946 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 2947 if (prop_enum->value == value) { 2948 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2949 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2950 return 0; 2951 } 2952 } 2953 } 2954 2955 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); 2956 if (!prop_enum) 2957 return -ENOMEM; 2958 2959 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2960 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2961 prop_enum->value = value; 2962 2963 property->values[index] = value; 2964 list_add_tail(&prop_enum->head, &property->enum_blob_list); 2965 return 0; 2966} 2967EXPORT_SYMBOL(drm_property_add_enum); 2968 2969void drm_property_destroy(struct drm_device *dev, struct drm_property *property) 2970{ 2971 struct drm_property_enum *prop_enum, *pt; 2972 2973 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { 2974 list_del(&prop_enum->head); 2975 kfree(prop_enum); 2976 } 2977 2978 if (property->num_values) 2979 kfree(property->values); 2980 drm_mode_object_put(dev, &property->base); 2981 list_del(&property->head); 2982 kfree(property); 2983} 2984EXPORT_SYMBOL(drm_property_destroy); 2985 2986void drm_object_attach_property(struct drm_mode_object *obj, 2987 struct drm_property *property, 2988 uint64_t init_val) 2989{ 2990 int count = obj->properties->count; 2991 2992 if (count == DRM_OBJECT_MAX_PROPERTY) { 2993 WARN(1, "Failed to attach object property (type: 0x%x). Please " 2994 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time " 2995 "you see this message on the same object type.\n", 2996 obj->type); 2997 return; 2998 } 2999 3000 obj->properties->ids[count] = property->base.id; 3001 obj->properties->values[count] = init_val; 3002 obj->properties->count++; 3003} 3004EXPORT_SYMBOL(drm_object_attach_property); 3005 3006int drm_object_property_set_value(struct drm_mode_object *obj, 3007 struct drm_property *property, uint64_t val) 3008{ 3009 int i; 3010 3011 for (i = 0; i < obj->properties->count; i++) { 3012 if (obj->properties->ids[i] == property->base.id) { 3013 obj->properties->values[i] = val; 3014 return 0; 3015 } 3016 } 3017 3018 return -EINVAL; 3019} 3020EXPORT_SYMBOL(drm_object_property_set_value); 3021 3022int drm_object_property_get_value(struct drm_mode_object *obj, 3023 struct drm_property *property, uint64_t *val) 3024{ 3025 int i; 3026 3027 for (i = 0; i < obj->properties->count; i++) { 3028 if (obj->properties->ids[i] == property->base.id) { 3029 *val = obj->properties->values[i]; 3030 return 0; 3031 } 3032 } 3033 3034 return -EINVAL; 3035} 3036EXPORT_SYMBOL(drm_object_property_get_value); 3037 3038int drm_mode_getproperty_ioctl(struct drm_device *dev, 3039 void *data, struct drm_file *file_priv) 3040{ 3041 struct drm_mode_object *obj; 3042 struct drm_mode_get_property *out_resp = data; 3043 struct drm_property *property; 3044 int enum_count = 0; 3045 int blob_count = 0; 3046 int value_count = 0; 3047 int ret = 0, i; 3048 int copied; 3049 struct drm_property_enum *prop_enum; 3050 struct drm_mode_property_enum __user *enum_ptr; 3051 struct drm_property_blob *prop_blob; 3052 uint32_t __user *blob_id_ptr; 3053 uint64_t __user *values_ptr; 3054 uint32_t __user *blob_length_ptr; 3055 3056 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3057 return -EINVAL; 3058 3059 drm_modeset_lock_all(dev); 3060 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); 3061 if (!obj) { 3062 ret = -EINVAL; 3063 goto done; 3064 } 3065 property = obj_to_property(obj); 3066 3067 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 3068 list_for_each_entry(prop_enum, &property->enum_blob_list, head) 3069 enum_count++; 3070 } else if (property->flags & DRM_MODE_PROP_BLOB) { 3071 list_for_each_entry(prop_blob, &property->enum_blob_list, head) 3072 blob_count++; 3073 } 3074 3075 value_count = property->num_values; 3076 3077 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); 3078 out_resp->name[DRM_PROP_NAME_LEN-1] = 0; 3079 out_resp->flags = property->flags; 3080 3081 if ((out_resp->count_values >= value_count) && value_count) { 3082 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; 3083 for (i = 0; i < value_count; i++) { 3084 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { 3085 ret = -EFAULT; 3086 goto done; 3087 } 3088 } 3089 } 3090 out_resp->count_values = value_count; 3091 3092 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 3093 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { 3094 copied = 0; 3095 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; 3096 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 3097 3098 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { 3099 ret = -EFAULT; 3100 goto done; 3101 } 3102 3103 if (copy_to_user(&enum_ptr[copied].name, 3104 &prop_enum->name, DRM_PROP_NAME_LEN)) { 3105 ret = -EFAULT; 3106 goto done; 3107 } 3108 copied++; 3109 } 3110 } 3111 out_resp->count_enum_blobs = enum_count; 3112 } 3113 3114 if (property->flags & DRM_MODE_PROP_BLOB) { 3115 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { 3116 copied = 0; 3117 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr; 3118 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr; 3119 3120 list_for_each_entry(prop_blob, &property->enum_blob_list, head) { 3121 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { 3122 ret = -EFAULT; 3123 goto done; 3124 } 3125 3126 if (put_user(prop_blob->length, blob_length_ptr + copied)) { 3127 ret = -EFAULT; 3128 goto done; 3129 } 3130 3131 copied++; 3132 } 3133 } 3134 out_resp->count_enum_blobs = blob_count; 3135 } 3136done: 3137 drm_modeset_unlock_all(dev); 3138 return ret; 3139} 3140 3141static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, 3142 void *data) 3143{ 3144 struct drm_property_blob *blob; 3145 int ret; 3146 3147 if (!length || !data) 3148 return NULL; 3149 3150 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); 3151 if (!blob) 3152 return NULL; 3153 3154 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); 3155 if (ret) { 3156 kfree(blob); 3157 return NULL; 3158 } 3159 3160 blob->length = length; 3161 3162 memcpy(blob->data, data, length); 3163 3164 list_add_tail(&blob->head, &dev->mode_config.property_blob_list); 3165 return blob; 3166} 3167 3168static void drm_property_destroy_blob(struct drm_device *dev, 3169 struct drm_property_blob *blob) 3170{ 3171 drm_mode_object_put(dev, &blob->base); 3172 list_del(&blob->head); 3173 kfree(blob); 3174} 3175 3176int drm_mode_getblob_ioctl(struct drm_device *dev, 3177 void *data, struct drm_file *file_priv) 3178{ 3179 struct drm_mode_object *obj; 3180 struct drm_mode_get_blob *out_resp = data; 3181 struct drm_property_blob *blob; 3182 int ret = 0; 3183 void __user *blob_ptr; 3184 3185 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3186 return -EINVAL; 3187 3188 drm_modeset_lock_all(dev); 3189 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); 3190 if (!obj) { 3191 ret = -EINVAL; 3192 goto done; 3193 } 3194 blob = obj_to_blob(obj); 3195 3196 if (out_resp->length == blob->length) { 3197 blob_ptr = (void __user *)(unsigned long)out_resp->data; 3198 if (copy_to_user(blob_ptr, blob->data, blob->length)){ 3199 ret = -EFAULT; 3200 goto done; 3201 } 3202 } 3203 out_resp->length = blob->length; 3204 3205done: 3206 drm_modeset_unlock_all(dev); 3207 return ret; 3208} 3209 3210int drm_mode_connector_update_edid_property(struct drm_connector *connector, 3211 struct edid *edid) 3212{ 3213 struct drm_device *dev = connector->dev; 3214 int ret, size; 3215 3216 if (connector->edid_blob_ptr) 3217 drm_property_destroy_blob(dev, connector->edid_blob_ptr); 3218 3219 /* Delete edid, when there is none. */ 3220 if (!edid) { 3221 connector->edid_blob_ptr = NULL; 3222 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0); 3223 return ret; 3224 } 3225 3226 size = EDID_LENGTH * (1 + edid->extensions); 3227 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 3228 size, edid); 3229 if (!connector->edid_blob_ptr) 3230 return -EINVAL; 3231 3232 ret = drm_object_property_set_value(&connector->base, 3233 dev->mode_config.edid_property, 3234 connector->edid_blob_ptr->base.id); 3235 3236 return ret; 3237} 3238EXPORT_SYMBOL(drm_mode_connector_update_edid_property); 3239 3240static bool drm_property_change_is_valid(struct drm_property *property, 3241 uint64_t value) 3242{ 3243 if (property->flags & DRM_MODE_PROP_IMMUTABLE) 3244 return false; 3245 if (property->flags & DRM_MODE_PROP_RANGE) { 3246 if (value < property->values[0] || value > property->values[1]) 3247 return false; 3248 return true; 3249 } else if (property->flags & DRM_MODE_PROP_BITMASK) { 3250 int i; 3251 uint64_t valid_mask = 0; 3252 for (i = 0; i < property->num_values; i++) 3253 valid_mask |= (1ULL << property->values[i]); 3254 return !(value & ~valid_mask); 3255 } else if (property->flags & DRM_MODE_PROP_BLOB) { 3256 /* Only the driver knows */ 3257 return true; 3258 } else { 3259 int i; 3260 for (i = 0; i < property->num_values; i++) 3261 if (property->values[i] == value) 3262 return true; 3263 return false; 3264 } 3265} 3266 3267int drm_mode_connector_property_set_ioctl(struct drm_device *dev, 3268 void *data, struct drm_file *file_priv) 3269{ 3270 struct drm_mode_connector_set_property *conn_set_prop = data; 3271 struct drm_mode_obj_set_property obj_set_prop = { 3272 .value = conn_set_prop->value, 3273 .prop_id = conn_set_prop->prop_id, 3274 .obj_id = conn_set_prop->connector_id, 3275 .obj_type = DRM_MODE_OBJECT_CONNECTOR 3276 }; 3277 3278 /* It does all the locking and checking we need */ 3279 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); 3280} 3281 3282static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, 3283 struct drm_property *property, 3284 uint64_t value) 3285{ 3286 int ret = -EINVAL; 3287 struct drm_connector *connector = obj_to_connector(obj); 3288 3289 /* Do DPMS ourselves */ 3290 if (property == connector->dev->mode_config.dpms_property) { 3291 if (connector->funcs->dpms) 3292 (*connector->funcs->dpms)(connector, (int)value); 3293 ret = 0; 3294 } else if (connector->funcs->set_property) 3295 ret = connector->funcs->set_property(connector, property, value); 3296 3297 /* store the property value if successful */ 3298 if (!ret) 3299 drm_object_property_set_value(&connector->base, property, value); 3300 return ret; 3301} 3302 3303static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, 3304 struct drm_property *property, 3305 uint64_t value) 3306{ 3307 int ret = -EINVAL; 3308 struct drm_crtc *crtc = obj_to_crtc(obj); 3309 3310 if (crtc->funcs->set_property) 3311 ret = crtc->funcs->set_property(crtc, property, value); 3312 if (!ret) 3313 drm_object_property_set_value(obj, property, value); 3314 3315 return ret; 3316} 3317 3318static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj, 3319 struct drm_property *property, 3320 uint64_t value) 3321{ 3322 int ret = -EINVAL; 3323 struct drm_plane *plane = obj_to_plane(obj); 3324 3325 if (plane->funcs->set_property) 3326 ret = plane->funcs->set_property(plane, property, value); 3327 if (!ret) 3328 drm_object_property_set_value(obj, property, value); 3329 3330 return ret; 3331} 3332 3333int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, 3334 struct drm_file *file_priv) 3335{ 3336 struct drm_mode_obj_get_properties *arg = data; 3337 struct drm_mode_object *obj; 3338 int ret = 0; 3339 int i; 3340 int copied = 0; 3341 int props_count = 0; 3342 uint32_t __user *props_ptr; 3343 uint64_t __user *prop_values_ptr; 3344 3345 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3346 return -EINVAL; 3347 3348 drm_modeset_lock_all(dev); 3349 3350 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3351 if (!obj) { 3352 ret = -EINVAL; 3353 goto out; 3354 } 3355 if (!obj->properties) { 3356 ret = -EINVAL; 3357 goto out; 3358 } 3359 3360 props_count = obj->properties->count; 3361 3362 /* This ioctl is called twice, once to determine how much space is 3363 * needed, and the 2nd time to fill it. */ 3364 if ((arg->count_props >= props_count) && props_count) { 3365 copied = 0; 3366 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); 3367 prop_values_ptr = (uint64_t __user *)(unsigned long) 3368 (arg->prop_values_ptr); 3369 for (i = 0; i < props_count; i++) { 3370 if (put_user(obj->properties->ids[i], 3371 props_ptr + copied)) { 3372 ret = -EFAULT; 3373 goto out; 3374 } 3375 if (put_user(obj->properties->values[i], 3376 prop_values_ptr + copied)) { 3377 ret = -EFAULT; 3378 goto out; 3379 } 3380 copied++; 3381 } 3382 } 3383 arg->count_props = props_count; 3384out: 3385 drm_modeset_unlock_all(dev); 3386 return ret; 3387} 3388 3389int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, 3390 struct drm_file *file_priv) 3391{ 3392 struct drm_mode_obj_set_property *arg = data; 3393 struct drm_mode_object *arg_obj; 3394 struct drm_mode_object *prop_obj; 3395 struct drm_property *property; 3396 int ret = -EINVAL; 3397 int i; 3398 3399 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3400 return -EINVAL; 3401 3402 drm_modeset_lock_all(dev); 3403 3404 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3405 if (!arg_obj) 3406 goto out; 3407 if (!arg_obj->properties) 3408 goto out; 3409 3410 for (i = 0; i < arg_obj->properties->count; i++) 3411 if (arg_obj->properties->ids[i] == arg->prop_id) 3412 break; 3413 3414 if (i == arg_obj->properties->count) 3415 goto out; 3416 3417 prop_obj = drm_mode_object_find(dev, arg->prop_id, 3418 DRM_MODE_OBJECT_PROPERTY); 3419 if (!prop_obj) 3420 goto out; 3421 property = obj_to_property(prop_obj); 3422 3423 if (!drm_property_change_is_valid(property, arg->value)) 3424 goto out; 3425 3426 switch (arg_obj->type) { 3427 case DRM_MODE_OBJECT_CONNECTOR: 3428 ret = drm_mode_connector_set_obj_prop(arg_obj, property, 3429 arg->value); 3430 break; 3431 case DRM_MODE_OBJECT_CRTC: 3432 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value); 3433 break; 3434 case DRM_MODE_OBJECT_PLANE: 3435 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value); 3436 break; 3437 } 3438 3439out: 3440 drm_modeset_unlock_all(dev); 3441 return ret; 3442} 3443 3444int drm_mode_connector_attach_encoder(struct drm_connector *connector, 3445 struct drm_encoder *encoder) 3446{ 3447 int i; 3448 3449 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3450 if (connector->encoder_ids[i] == 0) { 3451 connector->encoder_ids[i] = encoder->base.id; 3452 return 0; 3453 } 3454 } 3455 return -ENOMEM; 3456} 3457EXPORT_SYMBOL(drm_mode_connector_attach_encoder); 3458 3459void drm_mode_connector_detach_encoder(struct drm_connector *connector, 3460 struct drm_encoder *encoder) 3461{ 3462 int i; 3463 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3464 if (connector->encoder_ids[i] == encoder->base.id) { 3465 connector->encoder_ids[i] = 0; 3466 if (connector->encoder == encoder) 3467 connector->encoder = NULL; 3468 break; 3469 } 3470 } 3471} 3472EXPORT_SYMBOL(drm_mode_connector_detach_encoder); 3473 3474int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, 3475 int gamma_size) 3476{ 3477 crtc->gamma_size = gamma_size; 3478 3479 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); 3480 if (!crtc->gamma_store) { 3481 crtc->gamma_size = 0; 3482 return -ENOMEM; 3483 } 3484 3485 return 0; 3486} 3487EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); 3488 3489int drm_mode_gamma_set_ioctl(struct drm_device *dev, 3490 void *data, struct drm_file *file_priv) 3491{ 3492 struct drm_mode_crtc_lut *crtc_lut = data; 3493 struct drm_mode_object *obj; 3494 struct drm_crtc *crtc; 3495 void *r_base, *g_base, *b_base; 3496 int size; 3497 int ret = 0; 3498 3499 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3500 return -EINVAL; 3501 3502 drm_modeset_lock_all(dev); 3503 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3504 if (!obj) { 3505 ret = -EINVAL; 3506 goto out; 3507 } 3508 crtc = obj_to_crtc(obj); 3509 3510 if (crtc->funcs->gamma_set == NULL) { 3511 ret = -ENOSYS; 3512 goto out; 3513 } 3514 3515 /* memcpy into gamma store */ 3516 if (crtc_lut->gamma_size != crtc->gamma_size) { 3517 ret = -EINVAL; 3518 goto out; 3519 } 3520 3521 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3522 r_base = crtc->gamma_store; 3523 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { 3524 ret = -EFAULT; 3525 goto out; 3526 } 3527 3528 g_base = r_base + size; 3529 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { 3530 ret = -EFAULT; 3531 goto out; 3532 } 3533 3534 b_base = g_base + size; 3535 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { 3536 ret = -EFAULT; 3537 goto out; 3538 } 3539 3540 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); 3541 3542out: 3543 drm_modeset_unlock_all(dev); 3544 return ret; 3545 3546} 3547 3548int drm_mode_gamma_get_ioctl(struct drm_device *dev, 3549 void *data, struct drm_file *file_priv) 3550{ 3551 struct drm_mode_crtc_lut *crtc_lut = data; 3552 struct drm_mode_object *obj; 3553 struct drm_crtc *crtc; 3554 void *r_base, *g_base, *b_base; 3555 int size; 3556 int ret = 0; 3557 3558 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3559 return -EINVAL; 3560 3561 drm_modeset_lock_all(dev); 3562 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3563 if (!obj) { 3564 ret = -EINVAL; 3565 goto out; 3566 } 3567 crtc = obj_to_crtc(obj); 3568 3569 /* memcpy into gamma store */ 3570 if (crtc_lut->gamma_size != crtc->gamma_size) { 3571 ret = -EINVAL; 3572 goto out; 3573 } 3574 3575 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3576 r_base = crtc->gamma_store; 3577 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { 3578 ret = -EFAULT; 3579 goto out; 3580 } 3581 3582 g_base = r_base + size; 3583 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { 3584 ret = -EFAULT; 3585 goto out; 3586 } 3587 3588 b_base = g_base + size; 3589 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { 3590 ret = -EFAULT; 3591 goto out; 3592 } 3593out: 3594 drm_modeset_unlock_all(dev); 3595 return ret; 3596} 3597 3598int drm_mode_page_flip_ioctl(struct drm_device *dev, 3599 void *data, struct drm_file *file_priv) 3600{ 3601 struct drm_mode_crtc_page_flip *page_flip = data; 3602 struct drm_mode_object *obj; 3603 struct drm_crtc *crtc; 3604 struct drm_framebuffer *fb = NULL, *old_fb = NULL; 3605 struct drm_pending_vblank_event *e = NULL; 3606 unsigned long flags; 3607 int ret = -EINVAL; 3608 3609 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || 3610 page_flip->reserved != 0) 3611 return -EINVAL; 3612 3613 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) 3614 return -EINVAL; 3615 3616 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC); 3617 if (!obj) 3618 return -EINVAL; 3619 crtc = obj_to_crtc(obj); 3620 3621 mutex_lock(&crtc->mutex); 3622 if (crtc->fb == NULL) { 3623 /* The framebuffer is currently unbound, presumably 3624 * due to a hotplug event, that userspace has not 3625 * yet discovered. 3626 */ 3627 ret = -EBUSY; 3628 goto out; 3629 } 3630 3631 if (crtc->funcs->page_flip == NULL) 3632 goto out; 3633 3634 fb = drm_framebuffer_lookup(dev, page_flip->fb_id); 3635 if (!fb) 3636 goto out; 3637 3638 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb); 3639 if (ret) 3640 goto out; 3641 3642 if (crtc->fb->pixel_format != fb->pixel_format) { 3643 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); 3644 ret = -EINVAL; 3645 goto out; 3646 } 3647 3648 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3649 ret = -ENOMEM; 3650 spin_lock_irqsave(&dev->event_lock, flags); 3651 if (file_priv->event_space < sizeof e->event) { 3652 spin_unlock_irqrestore(&dev->event_lock, flags); 3653 goto out; 3654 } 3655 file_priv->event_space -= sizeof e->event; 3656 spin_unlock_irqrestore(&dev->event_lock, flags); 3657 3658 e = kzalloc(sizeof *e, GFP_KERNEL); 3659 if (e == NULL) { 3660 spin_lock_irqsave(&dev->event_lock, flags); 3661 file_priv->event_space += sizeof e->event; 3662 spin_unlock_irqrestore(&dev->event_lock, flags); 3663 goto out; 3664 } 3665 3666 e->event.base.type = DRM_EVENT_FLIP_COMPLETE; 3667 e->event.base.length = sizeof e->event; 3668 e->event.user_data = page_flip->user_data; 3669 e->base.event = &e->event.base; 3670 e->base.file_priv = file_priv; 3671 e->base.destroy = 3672 (void (*) (struct drm_pending_event *)) kfree; 3673 } 3674 3675 old_fb = crtc->fb; 3676 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); 3677 if (ret) { 3678 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3679 spin_lock_irqsave(&dev->event_lock, flags); 3680 file_priv->event_space += sizeof e->event; 3681 spin_unlock_irqrestore(&dev->event_lock, flags); 3682 kfree(e); 3683 } 3684 /* Keep the old fb, don't unref it. */ 3685 old_fb = NULL; 3686 } else { 3687 /* 3688 * Warn if the driver hasn't properly updated the crtc->fb 3689 * field to reflect that the new framebuffer is now used. 3690 * Failing to do so will screw with the reference counting 3691 * on framebuffers. 3692 */ 3693 WARN_ON(crtc->fb != fb); 3694 /* Unref only the old framebuffer. */ 3695 fb = NULL; 3696 } 3697 3698out: 3699 if (fb) 3700 drm_framebuffer_unreference(fb); 3701 if (old_fb) 3702 drm_framebuffer_unreference(old_fb); 3703 mutex_unlock(&crtc->mutex); 3704 3705 return ret; 3706} 3707 3708void drm_mode_config_reset(struct drm_device *dev) 3709{ 3710 struct drm_crtc *crtc; 3711 struct drm_encoder *encoder; 3712 struct drm_connector *connector; 3713 3714 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 3715 if (crtc->funcs->reset) 3716 crtc->funcs->reset(crtc); 3717 3718 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 3719 if (encoder->funcs->reset) 3720 encoder->funcs->reset(encoder); 3721 3722 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 3723 connector->status = connector_status_unknown; 3724 3725 if (connector->funcs->reset) 3726 connector->funcs->reset(connector); 3727 } 3728} 3729EXPORT_SYMBOL(drm_mode_config_reset); 3730 3731int drm_mode_create_dumb_ioctl(struct drm_device *dev, 3732 void *data, struct drm_file *file_priv) 3733{ 3734 struct drm_mode_create_dumb *args = data; 3735 3736 if (!dev->driver->dumb_create) 3737 return -ENOSYS; 3738 return dev->driver->dumb_create(file_priv, dev, args); 3739} 3740 3741int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, 3742 void *data, struct drm_file *file_priv) 3743{ 3744 struct drm_mode_map_dumb *args = data; 3745 3746 /* call driver ioctl to get mmap offset */ 3747 if (!dev->driver->dumb_map_offset) 3748 return -ENOSYS; 3749 3750 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); 3751} 3752 3753int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, 3754 void *data, struct drm_file *file_priv) 3755{ 3756 struct drm_mode_destroy_dumb *args = data; 3757 3758 if (!dev->driver->dumb_destroy) 3759 return -ENOSYS; 3760 3761 return dev->driver->dumb_destroy(file_priv, dev, args->handle); 3762} 3763 3764/* 3765 * Just need to support RGB formats here for compat with code that doesn't 3766 * use pixel formats directly yet. 3767 */ 3768void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, 3769 int *bpp) 3770{ 3771 switch (format) { 3772 case DRM_FORMAT_C8: 3773 case DRM_FORMAT_RGB332: 3774 case DRM_FORMAT_BGR233: 3775 *depth = 8; 3776 *bpp = 8; 3777 break; 3778 case DRM_FORMAT_XRGB1555: 3779 case DRM_FORMAT_XBGR1555: 3780 case DRM_FORMAT_RGBX5551: 3781 case DRM_FORMAT_BGRX5551: 3782 case DRM_FORMAT_ARGB1555: 3783 case DRM_FORMAT_ABGR1555: 3784 case DRM_FORMAT_RGBA5551: 3785 case DRM_FORMAT_BGRA5551: 3786 *depth = 15; 3787 *bpp = 16; 3788 break; 3789 case DRM_FORMAT_RGB565: 3790 case DRM_FORMAT_BGR565: 3791 *depth = 16; 3792 *bpp = 16; 3793 break; 3794 case DRM_FORMAT_RGB888: 3795 case DRM_FORMAT_BGR888: 3796 *depth = 24; 3797 *bpp = 24; 3798 break; 3799 case DRM_FORMAT_XRGB8888: 3800 case DRM_FORMAT_XBGR8888: 3801 case DRM_FORMAT_RGBX8888: 3802 case DRM_FORMAT_BGRX8888: 3803 *depth = 24; 3804 *bpp = 32; 3805 break; 3806 case DRM_FORMAT_XRGB2101010: 3807 case DRM_FORMAT_XBGR2101010: 3808 case DRM_FORMAT_RGBX1010102: 3809 case DRM_FORMAT_BGRX1010102: 3810 case DRM_FORMAT_ARGB2101010: 3811 case DRM_FORMAT_ABGR2101010: 3812 case DRM_FORMAT_RGBA1010102: 3813 case DRM_FORMAT_BGRA1010102: 3814 *depth = 30; 3815 *bpp = 32; 3816 break; 3817 case DRM_FORMAT_ARGB8888: 3818 case DRM_FORMAT_ABGR8888: 3819 case DRM_FORMAT_RGBA8888: 3820 case DRM_FORMAT_BGRA8888: 3821 *depth = 32; 3822 *bpp = 32; 3823 break; 3824 default: 3825 DRM_DEBUG_KMS("unsupported pixel format\n"); 3826 *depth = 0; 3827 *bpp = 0; 3828 break; 3829 } 3830} 3831EXPORT_SYMBOL(drm_fb_get_bpp_depth); 3832 3833/** 3834 * drm_format_num_planes - get the number of planes for format 3835 * @format: pixel format (DRM_FORMAT_*) 3836 * 3837 * RETURNS: 3838 * The number of planes used by the specified pixel format. 3839 */ 3840int drm_format_num_planes(uint32_t format) 3841{ 3842 switch (format) { 3843 case DRM_FORMAT_YUV410: 3844 case DRM_FORMAT_YVU410: 3845 case DRM_FORMAT_YUV411: 3846 case DRM_FORMAT_YVU411: 3847 case DRM_FORMAT_YUV420: 3848 case DRM_FORMAT_YVU420: 3849 case DRM_FORMAT_YUV422: 3850 case DRM_FORMAT_YVU422: 3851 case DRM_FORMAT_YUV444: 3852 case DRM_FORMAT_YVU444: 3853 return 3; 3854 case DRM_FORMAT_NV12: 3855 case DRM_FORMAT_NV21: 3856 case DRM_FORMAT_NV16: 3857 case DRM_FORMAT_NV61: 3858 case DRM_FORMAT_NV24: 3859 case DRM_FORMAT_NV42: 3860 return 2; 3861 default: 3862 return 1; 3863 } 3864} 3865EXPORT_SYMBOL(drm_format_num_planes); 3866 3867/** 3868 * drm_format_plane_cpp - determine the bytes per pixel value 3869 * @format: pixel format (DRM_FORMAT_*) 3870 * @plane: plane index 3871 * 3872 * RETURNS: 3873 * The bytes per pixel value for the specified plane. 3874 */ 3875int drm_format_plane_cpp(uint32_t format, int plane) 3876{ 3877 unsigned int depth; 3878 int bpp; 3879 3880 if (plane >= drm_format_num_planes(format)) 3881 return 0; 3882 3883 switch (format) { 3884 case DRM_FORMAT_YUYV: 3885 case DRM_FORMAT_YVYU: 3886 case DRM_FORMAT_UYVY: 3887 case DRM_FORMAT_VYUY: 3888 return 2; 3889 case DRM_FORMAT_NV12: 3890 case DRM_FORMAT_NV21: 3891 case DRM_FORMAT_NV16: 3892 case DRM_FORMAT_NV61: 3893 case DRM_FORMAT_NV24: 3894 case DRM_FORMAT_NV42: 3895 return plane ? 2 : 1; 3896 case DRM_FORMAT_YUV410: 3897 case DRM_FORMAT_YVU410: 3898 case DRM_FORMAT_YUV411: 3899 case DRM_FORMAT_YVU411: 3900 case DRM_FORMAT_YUV420: 3901 case DRM_FORMAT_YVU420: 3902 case DRM_FORMAT_YUV422: 3903 case DRM_FORMAT_YVU422: 3904 case DRM_FORMAT_YUV444: 3905 case DRM_FORMAT_YVU444: 3906 return 1; 3907 default: 3908 drm_fb_get_bpp_depth(format, &depth, &bpp); 3909 return bpp >> 3; 3910 } 3911} 3912EXPORT_SYMBOL(drm_format_plane_cpp); 3913 3914/** 3915 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor 3916 * @format: pixel format (DRM_FORMAT_*) 3917 * 3918 * RETURNS: 3919 * The horizontal chroma subsampling factor for the 3920 * specified pixel format. 3921 */ 3922int drm_format_horz_chroma_subsampling(uint32_t format) 3923{ 3924 switch (format) { 3925 case DRM_FORMAT_YUV411: 3926 case DRM_FORMAT_YVU411: 3927 case DRM_FORMAT_YUV410: 3928 case DRM_FORMAT_YVU410: 3929 return 4; 3930 case DRM_FORMAT_YUYV: 3931 case DRM_FORMAT_YVYU: 3932 case DRM_FORMAT_UYVY: 3933 case DRM_FORMAT_VYUY: 3934 case DRM_FORMAT_NV12: 3935 case DRM_FORMAT_NV21: 3936 case DRM_FORMAT_NV16: 3937 case DRM_FORMAT_NV61: 3938 case DRM_FORMAT_YUV422: 3939 case DRM_FORMAT_YVU422: 3940 case DRM_FORMAT_YUV420: 3941 case DRM_FORMAT_YVU420: 3942 return 2; 3943 default: 3944 return 1; 3945 } 3946} 3947EXPORT_SYMBOL(drm_format_horz_chroma_subsampling); 3948 3949/** 3950 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor 3951 * @format: pixel format (DRM_FORMAT_*) 3952 * 3953 * RETURNS: 3954 * The vertical chroma subsampling factor for the 3955 * specified pixel format. 3956 */ 3957int drm_format_vert_chroma_subsampling(uint32_t format) 3958{ 3959 switch (format) { 3960 case DRM_FORMAT_YUV410: 3961 case DRM_FORMAT_YVU410: 3962 return 4; 3963 case DRM_FORMAT_YUV420: 3964 case DRM_FORMAT_YVU420: 3965 case DRM_FORMAT_NV12: 3966 case DRM_FORMAT_NV21: 3967 return 2; 3968 default: 3969 return 1; 3970 } 3971} 3972EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); 3973 3974/** 3975 * drm_mode_config_init - initialize DRM mode_configuration structure 3976 * @dev: DRM device 3977 * 3978 * Initialize @dev's mode_config structure, used for tracking the graphics 3979 * configuration of @dev. 3980 * 3981 * Since this initializes the modeset locks, no locking is possible. Which is no 3982 * problem, since this should happen single threaded at init time. It is the 3983 * driver's problem to ensure this guarantee. 3984 * 3985 */ 3986void drm_mode_config_init(struct drm_device *dev) 3987{ 3988 mutex_init(&dev->mode_config.mutex); 3989 mutex_init(&dev->mode_config.idr_mutex); 3990 mutex_init(&dev->mode_config.fb_lock); 3991 INIT_LIST_HEAD(&dev->mode_config.fb_list); 3992 INIT_LIST_HEAD(&dev->mode_config.crtc_list); 3993 INIT_LIST_HEAD(&dev->mode_config.connector_list); 3994 INIT_LIST_HEAD(&dev->mode_config.bridge_list); 3995 INIT_LIST_HEAD(&dev->mode_config.encoder_list); 3996 INIT_LIST_HEAD(&dev->mode_config.property_list); 3997 INIT_LIST_HEAD(&dev->mode_config.property_blob_list); 3998 INIT_LIST_HEAD(&dev->mode_config.plane_list); 3999 idr_init(&dev->mode_config.crtc_idr); 4000 4001 drm_modeset_lock_all(dev); 4002 drm_mode_create_standard_connector_properties(dev); 4003 drm_modeset_unlock_all(dev); 4004 4005 /* Just to be sure */ 4006 dev->mode_config.num_fb = 0; 4007 dev->mode_config.num_connector = 0; 4008 dev->mode_config.num_crtc = 0; 4009 dev->mode_config.num_encoder = 0; 4010} 4011EXPORT_SYMBOL(drm_mode_config_init); 4012 4013/** 4014 * drm_mode_config_cleanup - free up DRM mode_config info 4015 * @dev: DRM device 4016 * 4017 * Free up all the connectors and CRTCs associated with this DRM device, then 4018 * free up the framebuffers and associated buffer objects. 4019 * 4020 * Note that since this /should/ happen single-threaded at driver/device 4021 * teardown time, no locking is required. It's the driver's job to ensure that 4022 * this guarantee actually holds true. 4023 * 4024 * FIXME: cleanup any dangling user buffer objects too 4025 */ 4026void drm_mode_config_cleanup(struct drm_device *dev) 4027{ 4028 struct drm_connector *connector, *ot; 4029 struct drm_crtc *crtc, *ct; 4030 struct drm_encoder *encoder, *enct; 4031 struct drm_bridge *bridge, *brt; 4032 struct drm_framebuffer *fb, *fbt; 4033 struct drm_property *property, *pt; 4034 struct drm_property_blob *blob, *bt; 4035 struct drm_plane *plane, *plt; 4036 4037 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, 4038 head) { 4039 encoder->funcs->destroy(encoder); 4040 } 4041 4042 list_for_each_entry_safe(bridge, brt, 4043 &dev->mode_config.bridge_list, head) { 4044 bridge->funcs->destroy(bridge); 4045 } 4046 4047 list_for_each_entry_safe(connector, ot, 4048 &dev->mode_config.connector_list, head) { 4049 connector->funcs->destroy(connector); 4050 } 4051 4052 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, 4053 head) { 4054 drm_property_destroy(dev, property); 4055 } 4056 4057 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, 4058 head) { 4059 drm_property_destroy_blob(dev, blob); 4060 } 4061 4062 /* 4063 * Single-threaded teardown context, so it's not required to grab the 4064 * fb_lock to protect against concurrent fb_list access. Contrary, it 4065 * would actually deadlock with the drm_framebuffer_cleanup function. 4066 * 4067 * Also, if there are any framebuffers left, that's a driver leak now, 4068 * so politely WARN about this. 4069 */ 4070 WARN_ON(!list_empty(&dev->mode_config.fb_list)); 4071 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { 4072 drm_framebuffer_remove(fb); 4073 } 4074 4075 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, 4076 head) { 4077 plane->funcs->destroy(plane); 4078 } 4079 4080 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { 4081 crtc->funcs->destroy(crtc); 4082 } 4083 4084 idr_destroy(&dev->mode_config.crtc_idr); 4085} 4086EXPORT_SYMBOL(drm_mode_config_cleanup); 4087