drm_crtc.c revision d20d3174806ef6589cb912a488657d21fcd7ece2
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 128static const struct drm_prop_enum_list drm_dithering_mode_enum_list[] = 129{ 130 { DRM_MODE_DITHERING_OFF, "Off" }, 131 { DRM_MODE_DITHERING_ON, "On" }, 132 { DRM_MODE_DITHERING_AUTO, "Automatic" }, 133}; 134 135/* 136 * Non-global properties, but "required" for certain connectors. 137 */ 138static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = 139{ 140 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ 141 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ 142 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ 143}; 144 145DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) 146 147static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = 148{ 149 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 150 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ 151 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ 152}; 153 154DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, 155 drm_dvi_i_subconnector_enum_list) 156 157static const struct drm_prop_enum_list drm_tv_select_enum_list[] = 158{ 159 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ 160 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 161 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 162 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 163 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 164}; 165 166DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) 167 168static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = 169{ 170 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 171 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 172 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 173 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 174 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 175}; 176 177DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, 178 drm_tv_subconnector_enum_list) 179 180static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = { 181 { DRM_MODE_DIRTY_OFF, "Off" }, 182 { DRM_MODE_DIRTY_ON, "On" }, 183 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" }, 184}; 185 186struct drm_conn_prop_enum_list { 187 int type; 188 const char *name; 189 int count; 190}; 191 192/* 193 * Connector and encoder types. 194 */ 195static struct drm_conn_prop_enum_list drm_connector_enum_list[] = 196{ { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 }, 197 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 }, 198 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 }, 199 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 }, 200 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 }, 201 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 }, 202 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 }, 203 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 }, 204 { DRM_MODE_CONNECTOR_Component, "Component", 0 }, 205 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 }, 206 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 }, 207 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 }, 208 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 }, 209 { DRM_MODE_CONNECTOR_TV, "TV", 0 }, 210 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 }, 211 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0}, 212}; 213 214static const struct drm_prop_enum_list drm_encoder_enum_list[] = 215{ { DRM_MODE_ENCODER_NONE, "None" }, 216 { DRM_MODE_ENCODER_DAC, "DAC" }, 217 { DRM_MODE_ENCODER_TMDS, "TMDS" }, 218 { DRM_MODE_ENCODER_LVDS, "LVDS" }, 219 { DRM_MODE_ENCODER_TVDAC, "TV" }, 220 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" }, 221}; 222 223const char *drm_get_encoder_name(const struct drm_encoder *encoder) 224{ 225 static char buf[32]; 226 227 snprintf(buf, 32, "%s-%d", 228 drm_encoder_enum_list[encoder->encoder_type].name, 229 encoder->base.id); 230 return buf; 231} 232EXPORT_SYMBOL(drm_get_encoder_name); 233 234const char *drm_get_connector_name(const struct drm_connector *connector) 235{ 236 static char buf[32]; 237 238 snprintf(buf, 32, "%s-%d", 239 drm_connector_enum_list[connector->connector_type].name, 240 connector->connector_type_id); 241 return buf; 242} 243EXPORT_SYMBOL(drm_get_connector_name); 244 245const char *drm_get_connector_status_name(enum drm_connector_status status) 246{ 247 if (status == connector_status_connected) 248 return "connected"; 249 else if (status == connector_status_disconnected) 250 return "disconnected"; 251 else 252 return "unknown"; 253} 254EXPORT_SYMBOL(drm_get_connector_status_name); 255 256static char printable_char(int c) 257{ 258 return isascii(c) && isprint(c) ? c : '?'; 259} 260 261const char *drm_get_format_name(uint32_t format) 262{ 263 static char buf[32]; 264 265 snprintf(buf, sizeof(buf), 266 "%c%c%c%c %s-endian (0x%08x)", 267 printable_char(format & 0xff), 268 printable_char((format >> 8) & 0xff), 269 printable_char((format >> 16) & 0xff), 270 printable_char((format >> 24) & 0x7f), 271 format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little", 272 format); 273 274 return buf; 275} 276EXPORT_SYMBOL(drm_get_format_name); 277 278/** 279 * drm_mode_object_get - allocate a new modeset identifier 280 * @dev: DRM device 281 * @obj: object pointer, used to generate unique ID 282 * @obj_type: object type 283 * 284 * Create a unique identifier based on @ptr in @dev's identifier space. Used 285 * for tracking modes, CRTCs and connectors. 286 * 287 * RETURNS: 288 * New unique (relative to other objects in @dev) integer identifier for the 289 * object. 290 */ 291static int drm_mode_object_get(struct drm_device *dev, 292 struct drm_mode_object *obj, uint32_t obj_type) 293{ 294 int ret; 295 296 mutex_lock(&dev->mode_config.idr_mutex); 297 ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL); 298 if (ret >= 0) { 299 /* 300 * Set up the object linking under the protection of the idr 301 * lock so that other users can't see inconsistent state. 302 */ 303 obj->id = ret; 304 obj->type = obj_type; 305 } 306 mutex_unlock(&dev->mode_config.idr_mutex); 307 308 return ret < 0 ? ret : 0; 309} 310 311/** 312 * drm_mode_object_put - free a modeset identifer 313 * @dev: DRM device 314 * @object: object to free 315 * 316 * Free @id from @dev's unique identifier pool. 317 */ 318static void drm_mode_object_put(struct drm_device *dev, 319 struct drm_mode_object *object) 320{ 321 mutex_lock(&dev->mode_config.idr_mutex); 322 idr_remove(&dev->mode_config.crtc_idr, object->id); 323 mutex_unlock(&dev->mode_config.idr_mutex); 324} 325 326/** 327 * drm_mode_object_find - look up a drm object with static lifetime 328 * @dev: drm device 329 * @id: id of the mode object 330 * @type: type of the mode object 331 * 332 * Note that framebuffers cannot be looked up with this functions - since those 333 * are reference counted, they need special treatment. 334 */ 335struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, 336 uint32_t id, uint32_t type) 337{ 338 struct drm_mode_object *obj = NULL; 339 340 /* Framebuffers are reference counted and need their own lookup 341 * function.*/ 342 WARN_ON(type == DRM_MODE_OBJECT_FB); 343 344 mutex_lock(&dev->mode_config.idr_mutex); 345 obj = idr_find(&dev->mode_config.crtc_idr, id); 346 if (!obj || (obj->type != type) || (obj->id != id)) 347 obj = NULL; 348 mutex_unlock(&dev->mode_config.idr_mutex); 349 350 return obj; 351} 352EXPORT_SYMBOL(drm_mode_object_find); 353 354/** 355 * drm_framebuffer_init - initialize a framebuffer 356 * @dev: DRM device 357 * @fb: framebuffer to be initialized 358 * @funcs: ... with these functions 359 * 360 * Allocates an ID for the framebuffer's parent mode object, sets its mode 361 * functions & device file and adds it to the master fd list. 362 * 363 * IMPORTANT: 364 * This functions publishes the fb and makes it available for concurrent access 365 * by other users. Which means by this point the fb _must_ be fully set up - 366 * since all the fb attributes are invariant over its lifetime, no further 367 * locking but only correct reference counting is required. 368 * 369 * RETURNS: 370 * Zero on success, error code on failure. 371 */ 372int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, 373 const struct drm_framebuffer_funcs *funcs) 374{ 375 int ret; 376 377 mutex_lock(&dev->mode_config.fb_lock); 378 kref_init(&fb->refcount); 379 INIT_LIST_HEAD(&fb->filp_head); 380 fb->dev = dev; 381 fb->funcs = funcs; 382 383 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB); 384 if (ret) 385 goto out; 386 387 /* Grab the idr reference. */ 388 drm_framebuffer_reference(fb); 389 390 dev->mode_config.num_fb++; 391 list_add(&fb->head, &dev->mode_config.fb_list); 392out: 393 mutex_unlock(&dev->mode_config.fb_lock); 394 395 return 0; 396} 397EXPORT_SYMBOL(drm_framebuffer_init); 398 399static void drm_framebuffer_free(struct kref *kref) 400{ 401 struct drm_framebuffer *fb = 402 container_of(kref, struct drm_framebuffer, refcount); 403 fb->funcs->destroy(fb); 404} 405 406static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev, 407 uint32_t id) 408{ 409 struct drm_mode_object *obj = NULL; 410 struct drm_framebuffer *fb; 411 412 mutex_lock(&dev->mode_config.idr_mutex); 413 obj = idr_find(&dev->mode_config.crtc_idr, id); 414 if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id)) 415 fb = NULL; 416 else 417 fb = obj_to_fb(obj); 418 mutex_unlock(&dev->mode_config.idr_mutex); 419 420 return fb; 421} 422 423/** 424 * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference 425 * @dev: drm device 426 * @id: id of the fb object 427 * 428 * If successful, this grabs an additional reference to the framebuffer - 429 * callers need to make sure to eventually unreference the returned framebuffer 430 * again. 431 */ 432struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, 433 uint32_t id) 434{ 435 struct drm_framebuffer *fb; 436 437 mutex_lock(&dev->mode_config.fb_lock); 438 fb = __drm_framebuffer_lookup(dev, id); 439 if (fb) 440 drm_framebuffer_reference(fb); 441 mutex_unlock(&dev->mode_config.fb_lock); 442 443 return fb; 444} 445EXPORT_SYMBOL(drm_framebuffer_lookup); 446 447/** 448 * drm_framebuffer_unreference - unref a framebuffer 449 * @fb: framebuffer to unref 450 * 451 * This functions decrements the fb's refcount and frees it if it drops to zero. 452 */ 453void drm_framebuffer_unreference(struct drm_framebuffer *fb) 454{ 455 DRM_DEBUG("FB ID: %d\n", fb->base.id); 456 kref_put(&fb->refcount, drm_framebuffer_free); 457} 458EXPORT_SYMBOL(drm_framebuffer_unreference); 459 460/** 461 * drm_framebuffer_reference - incr the fb refcnt 462 * @fb: framebuffer 463 */ 464void drm_framebuffer_reference(struct drm_framebuffer *fb) 465{ 466 DRM_DEBUG("FB ID: %d\n", fb->base.id); 467 kref_get(&fb->refcount); 468} 469EXPORT_SYMBOL(drm_framebuffer_reference); 470 471static void drm_framebuffer_free_bug(struct kref *kref) 472{ 473 BUG(); 474} 475 476static void __drm_framebuffer_unreference(struct drm_framebuffer *fb) 477{ 478 DRM_DEBUG("FB ID: %d\n", fb->base.id); 479 kref_put(&fb->refcount, drm_framebuffer_free_bug); 480} 481 482/* dev->mode_config.fb_lock must be held! */ 483static void __drm_framebuffer_unregister(struct drm_device *dev, 484 struct drm_framebuffer *fb) 485{ 486 mutex_lock(&dev->mode_config.idr_mutex); 487 idr_remove(&dev->mode_config.crtc_idr, fb->base.id); 488 mutex_unlock(&dev->mode_config.idr_mutex); 489 490 fb->base.id = 0; 491 492 __drm_framebuffer_unreference(fb); 493} 494 495/** 496 * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr 497 * @fb: fb to unregister 498 * 499 * Drivers need to call this when cleaning up driver-private framebuffers, e.g. 500 * those used for fbdev. Note that the caller must hold a reference of it's own, 501 * i.e. the object may not be destroyed through this call (since it'll lead to a 502 * locking inversion). 503 */ 504void drm_framebuffer_unregister_private(struct drm_framebuffer *fb) 505{ 506 struct drm_device *dev = fb->dev; 507 508 mutex_lock(&dev->mode_config.fb_lock); 509 /* Mark fb as reaped and drop idr ref. */ 510 __drm_framebuffer_unregister(dev, fb); 511 mutex_unlock(&dev->mode_config.fb_lock); 512} 513EXPORT_SYMBOL(drm_framebuffer_unregister_private); 514 515/** 516 * drm_framebuffer_cleanup - remove a framebuffer object 517 * @fb: framebuffer to remove 518 * 519 * Cleanup references to a user-created framebuffer. This function is intended 520 * to be used from the drivers ->destroy callback. 521 * 522 * Note that this function does not remove the fb from active usuage - if it is 523 * still used anywhere, hilarity can ensue since userspace could call getfb on 524 * the id and get back -EINVAL. Obviously no concern at driver unload time. 525 * 526 * Also, the framebuffer will not be removed from the lookup idr - for 527 * user-created framebuffers this will happen in in the rmfb ioctl. For 528 * driver-private objects (e.g. for fbdev) drivers need to explicitly call 529 * drm_framebuffer_unregister_private. 530 */ 531void drm_framebuffer_cleanup(struct drm_framebuffer *fb) 532{ 533 struct drm_device *dev = fb->dev; 534 535 mutex_lock(&dev->mode_config.fb_lock); 536 list_del(&fb->head); 537 dev->mode_config.num_fb--; 538 mutex_unlock(&dev->mode_config.fb_lock); 539} 540EXPORT_SYMBOL(drm_framebuffer_cleanup); 541 542/** 543 * drm_framebuffer_remove - remove and unreference a framebuffer object 544 * @fb: framebuffer to remove 545 * 546 * Scans all the CRTCs and planes in @dev's mode_config. If they're 547 * using @fb, removes it, setting it to NULL. Then drops the reference to the 548 * passed-in framebuffer. Might take the modeset locks. 549 * 550 * Note that this function optimizes the cleanup away if the caller holds the 551 * last reference to the framebuffer. It is also guaranteed to not take the 552 * modeset locks in this case. 553 */ 554void drm_framebuffer_remove(struct drm_framebuffer *fb) 555{ 556 struct drm_device *dev = fb->dev; 557 struct drm_crtc *crtc; 558 struct drm_plane *plane; 559 struct drm_mode_set set; 560 int ret; 561 562 WARN_ON(!list_empty(&fb->filp_head)); 563 564 /* 565 * drm ABI mandates that we remove any deleted framebuffers from active 566 * useage. But since most sane clients only remove framebuffers they no 567 * longer need, try to optimize this away. 568 * 569 * Since we're holding a reference ourselves, observing a refcount of 1 570 * means that we're the last holder and can skip it. Also, the refcount 571 * can never increase from 1 again, so we don't need any barriers or 572 * locks. 573 * 574 * Note that userspace could try to race with use and instate a new 575 * usage _after_ we've cleared all current ones. End result will be an 576 * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot 577 * in this manner. 578 */ 579 if (atomic_read(&fb->refcount.refcount) > 1) { 580 drm_modeset_lock_all(dev); 581 /* remove from any CRTC */ 582 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 583 if (crtc->fb == fb) { 584 /* should turn off the crtc */ 585 memset(&set, 0, sizeof(struct drm_mode_set)); 586 set.crtc = crtc; 587 set.fb = NULL; 588 ret = drm_mode_set_config_internal(&set); 589 if (ret) 590 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc); 591 } 592 } 593 594 list_for_each_entry(plane, &dev->mode_config.plane_list, head) { 595 if (plane->fb == fb) { 596 /* should turn off the crtc */ 597 ret = plane->funcs->disable_plane(plane); 598 if (ret) 599 DRM_ERROR("failed to disable plane with busy fb\n"); 600 /* disconnect the plane from the fb and crtc: */ 601 __drm_framebuffer_unreference(plane->fb); 602 plane->fb = NULL; 603 plane->crtc = NULL; 604 } 605 } 606 drm_modeset_unlock_all(dev); 607 } 608 609 drm_framebuffer_unreference(fb); 610} 611EXPORT_SYMBOL(drm_framebuffer_remove); 612 613/** 614 * drm_crtc_init - Initialise a new CRTC object 615 * @dev: DRM device 616 * @crtc: CRTC object to init 617 * @funcs: callbacks for the new CRTC 618 * 619 * Inits a new object created as base part of an driver crtc object. 620 * 621 * RETURNS: 622 * Zero on success, error code on failure. 623 */ 624int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 625 const struct drm_crtc_funcs *funcs) 626{ 627 int ret; 628 629 crtc->dev = dev; 630 crtc->funcs = funcs; 631 crtc->invert_dimensions = false; 632 633 drm_modeset_lock_all(dev); 634 mutex_init(&crtc->mutex); 635 mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); 636 637 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); 638 if (ret) 639 goto out; 640 641 crtc->base.properties = &crtc->properties; 642 643 list_add_tail(&crtc->head, &dev->mode_config.crtc_list); 644 dev->mode_config.num_crtc++; 645 646 out: 647 drm_modeset_unlock_all(dev); 648 649 return ret; 650} 651EXPORT_SYMBOL(drm_crtc_init); 652 653/** 654 * drm_crtc_cleanup - Cleans up the core crtc usage. 655 * @crtc: CRTC to cleanup 656 * 657 * Cleanup @crtc. Removes from drm modesetting space 658 * does NOT free object, caller does that. 659 */ 660void drm_crtc_cleanup(struct drm_crtc *crtc) 661{ 662 struct drm_device *dev = crtc->dev; 663 664 kfree(crtc->gamma_store); 665 crtc->gamma_store = NULL; 666 667 drm_mode_object_put(dev, &crtc->base); 668 list_del(&crtc->head); 669 dev->mode_config.num_crtc--; 670} 671EXPORT_SYMBOL(drm_crtc_cleanup); 672 673/** 674 * drm_mode_probed_add - add a mode to a connector's probed mode list 675 * @connector: connector the new mode 676 * @mode: mode data 677 * 678 * Add @mode to @connector's mode list for later use. 679 */ 680void drm_mode_probed_add(struct drm_connector *connector, 681 struct drm_display_mode *mode) 682{ 683 list_add(&mode->head, &connector->probed_modes); 684} 685EXPORT_SYMBOL(drm_mode_probed_add); 686 687/** 688 * drm_mode_remove - remove and free a mode 689 * @connector: connector list to modify 690 * @mode: mode to remove 691 * 692 * Remove @mode from @connector's mode list, then free it. 693 */ 694void drm_mode_remove(struct drm_connector *connector, 695 struct drm_display_mode *mode) 696{ 697 list_del(&mode->head); 698 drm_mode_destroy(connector->dev, mode); 699} 700EXPORT_SYMBOL(drm_mode_remove); 701 702/** 703 * drm_connector_init - Init a preallocated connector 704 * @dev: DRM device 705 * @connector: the connector to init 706 * @funcs: callbacks for this connector 707 * @connector_type: user visible type of the connector 708 * 709 * Initialises a preallocated connector. Connectors should be 710 * subclassed as part of driver connector objects. 711 * 712 * RETURNS: 713 * Zero on success, error code on failure. 714 */ 715int drm_connector_init(struct drm_device *dev, 716 struct drm_connector *connector, 717 const struct drm_connector_funcs *funcs, 718 int connector_type) 719{ 720 int ret; 721 722 drm_modeset_lock_all(dev); 723 724 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR); 725 if (ret) 726 goto out; 727 728 connector->base.properties = &connector->properties; 729 connector->dev = dev; 730 connector->funcs = funcs; 731 connector->connector_type = connector_type; 732 connector->connector_type_id = 733 ++drm_connector_enum_list[connector_type].count; /* TODO */ 734 INIT_LIST_HEAD(&connector->probed_modes); 735 INIT_LIST_HEAD(&connector->modes); 736 connector->edid_blob_ptr = NULL; 737 connector->status = connector_status_unknown; 738 739 list_add_tail(&connector->head, &dev->mode_config.connector_list); 740 dev->mode_config.num_connector++; 741 742 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) 743 drm_object_attach_property(&connector->base, 744 dev->mode_config.edid_property, 745 0); 746 747 drm_object_attach_property(&connector->base, 748 dev->mode_config.dpms_property, 0); 749 750 out: 751 drm_modeset_unlock_all(dev); 752 753 return ret; 754} 755EXPORT_SYMBOL(drm_connector_init); 756 757/** 758 * drm_connector_cleanup - cleans up an initialised connector 759 * @connector: connector to cleanup 760 * 761 * Cleans up the connector but doesn't free the object. 762 */ 763void drm_connector_cleanup(struct drm_connector *connector) 764{ 765 struct drm_device *dev = connector->dev; 766 struct drm_display_mode *mode, *t; 767 768 list_for_each_entry_safe(mode, t, &connector->probed_modes, head) 769 drm_mode_remove(connector, mode); 770 771 list_for_each_entry_safe(mode, t, &connector->modes, head) 772 drm_mode_remove(connector, mode); 773 774 drm_mode_object_put(dev, &connector->base); 775 list_del(&connector->head); 776 dev->mode_config.num_connector--; 777} 778EXPORT_SYMBOL(drm_connector_cleanup); 779 780void drm_connector_unplug_all(struct drm_device *dev) 781{ 782 struct drm_connector *connector; 783 784 /* taking the mode config mutex ends up in a clash with sysfs */ 785 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 786 drm_sysfs_connector_remove(connector); 787 788} 789EXPORT_SYMBOL(drm_connector_unplug_all); 790 791int drm_encoder_init(struct drm_device *dev, 792 struct drm_encoder *encoder, 793 const struct drm_encoder_funcs *funcs, 794 int encoder_type) 795{ 796 int ret; 797 798 drm_modeset_lock_all(dev); 799 800 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); 801 if (ret) 802 goto out; 803 804 encoder->dev = dev; 805 encoder->encoder_type = encoder_type; 806 encoder->funcs = funcs; 807 808 list_add_tail(&encoder->head, &dev->mode_config.encoder_list); 809 dev->mode_config.num_encoder++; 810 811 out: 812 drm_modeset_unlock_all(dev); 813 814 return ret; 815} 816EXPORT_SYMBOL(drm_encoder_init); 817 818void drm_encoder_cleanup(struct drm_encoder *encoder) 819{ 820 struct drm_device *dev = encoder->dev; 821 drm_modeset_lock_all(dev); 822 drm_mode_object_put(dev, &encoder->base); 823 list_del(&encoder->head); 824 dev->mode_config.num_encoder--; 825 drm_modeset_unlock_all(dev); 826} 827EXPORT_SYMBOL(drm_encoder_cleanup); 828 829int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, 830 unsigned long possible_crtcs, 831 const struct drm_plane_funcs *funcs, 832 const uint32_t *formats, uint32_t format_count, 833 bool priv) 834{ 835 int ret; 836 837 drm_modeset_lock_all(dev); 838 839 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); 840 if (ret) 841 goto out; 842 843 plane->base.properties = &plane->properties; 844 plane->dev = dev; 845 plane->funcs = funcs; 846 plane->format_types = kmalloc(sizeof(uint32_t) * format_count, 847 GFP_KERNEL); 848 if (!plane->format_types) { 849 DRM_DEBUG_KMS("out of memory when allocating plane\n"); 850 drm_mode_object_put(dev, &plane->base); 851 ret = -ENOMEM; 852 goto out; 853 } 854 855 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); 856 plane->format_count = format_count; 857 plane->possible_crtcs = possible_crtcs; 858 859 /* private planes are not exposed to userspace, but depending on 860 * display hardware, might be convenient to allow sharing programming 861 * for the scanout engine with the crtc implementation. 862 */ 863 if (!priv) { 864 list_add_tail(&plane->head, &dev->mode_config.plane_list); 865 dev->mode_config.num_plane++; 866 } else { 867 INIT_LIST_HEAD(&plane->head); 868 } 869 870 out: 871 drm_modeset_unlock_all(dev); 872 873 return ret; 874} 875EXPORT_SYMBOL(drm_plane_init); 876 877void drm_plane_cleanup(struct drm_plane *plane) 878{ 879 struct drm_device *dev = plane->dev; 880 881 drm_modeset_lock_all(dev); 882 kfree(plane->format_types); 883 drm_mode_object_put(dev, &plane->base); 884 /* if not added to a list, it must be a private plane */ 885 if (!list_empty(&plane->head)) { 886 list_del(&plane->head); 887 dev->mode_config.num_plane--; 888 } 889 drm_modeset_unlock_all(dev); 890} 891EXPORT_SYMBOL(drm_plane_cleanup); 892 893/** 894 * drm_mode_create - create a new display mode 895 * @dev: DRM device 896 * 897 * Create a new drm_display_mode, give it an ID, and return it. 898 * 899 * RETURNS: 900 * Pointer to new mode on success, NULL on error. 901 */ 902struct drm_display_mode *drm_mode_create(struct drm_device *dev) 903{ 904 struct drm_display_mode *nmode; 905 906 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); 907 if (!nmode) 908 return NULL; 909 910 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { 911 kfree(nmode); 912 return NULL; 913 } 914 915 return nmode; 916} 917EXPORT_SYMBOL(drm_mode_create); 918 919/** 920 * drm_mode_destroy - remove a mode 921 * @dev: DRM device 922 * @mode: mode to remove 923 * 924 * Free @mode's unique identifier, then free it. 925 */ 926void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) 927{ 928 if (!mode) 929 return; 930 931 drm_mode_object_put(dev, &mode->base); 932 933 kfree(mode); 934} 935EXPORT_SYMBOL(drm_mode_destroy); 936 937static int drm_mode_create_standard_connector_properties(struct drm_device *dev) 938{ 939 struct drm_property *edid; 940 struct drm_property *dpms; 941 942 /* 943 * Standard properties (apply to all connectors) 944 */ 945 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB | 946 DRM_MODE_PROP_IMMUTABLE, 947 "EDID", 0); 948 dev->mode_config.edid_property = edid; 949 950 dpms = drm_property_create_enum(dev, 0, 951 "DPMS", drm_dpms_enum_list, 952 ARRAY_SIZE(drm_dpms_enum_list)); 953 dev->mode_config.dpms_property = dpms; 954 955 return 0; 956} 957 958/** 959 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties 960 * @dev: DRM device 961 * 962 * Called by a driver the first time a DVI-I connector is made. 963 */ 964int drm_mode_create_dvi_i_properties(struct drm_device *dev) 965{ 966 struct drm_property *dvi_i_selector; 967 struct drm_property *dvi_i_subconnector; 968 969 if (dev->mode_config.dvi_i_select_subconnector_property) 970 return 0; 971 972 dvi_i_selector = 973 drm_property_create_enum(dev, 0, 974 "select subconnector", 975 drm_dvi_i_select_enum_list, 976 ARRAY_SIZE(drm_dvi_i_select_enum_list)); 977 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; 978 979 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 980 "subconnector", 981 drm_dvi_i_subconnector_enum_list, 982 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); 983 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; 984 985 return 0; 986} 987EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); 988 989/** 990 * drm_create_tv_properties - create TV specific connector properties 991 * @dev: DRM device 992 * @num_modes: number of different TV formats (modes) supported 993 * @modes: array of pointers to strings containing name of each format 994 * 995 * Called by a driver's TV initialization routine, this function creates 996 * the TV specific connector properties for a given device. Caller is 997 * responsible for allocating a list of format names and passing them to 998 * this routine. 999 */ 1000int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes, 1001 char *modes[]) 1002{ 1003 struct drm_property *tv_selector; 1004 struct drm_property *tv_subconnector; 1005 int i; 1006 1007 if (dev->mode_config.tv_select_subconnector_property) 1008 return 0; 1009 1010 /* 1011 * Basic connector properties 1012 */ 1013 tv_selector = drm_property_create_enum(dev, 0, 1014 "select subconnector", 1015 drm_tv_select_enum_list, 1016 ARRAY_SIZE(drm_tv_select_enum_list)); 1017 dev->mode_config.tv_select_subconnector_property = tv_selector; 1018 1019 tv_subconnector = 1020 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 1021 "subconnector", 1022 drm_tv_subconnector_enum_list, 1023 ARRAY_SIZE(drm_tv_subconnector_enum_list)); 1024 dev->mode_config.tv_subconnector_property = tv_subconnector; 1025 1026 /* 1027 * Other, TV specific properties: margins & TV modes. 1028 */ 1029 dev->mode_config.tv_left_margin_property = 1030 drm_property_create_range(dev, 0, "left margin", 0, 100); 1031 1032 dev->mode_config.tv_right_margin_property = 1033 drm_property_create_range(dev, 0, "right margin", 0, 100); 1034 1035 dev->mode_config.tv_top_margin_property = 1036 drm_property_create_range(dev, 0, "top margin", 0, 100); 1037 1038 dev->mode_config.tv_bottom_margin_property = 1039 drm_property_create_range(dev, 0, "bottom margin", 0, 100); 1040 1041 dev->mode_config.tv_mode_property = 1042 drm_property_create(dev, DRM_MODE_PROP_ENUM, 1043 "mode", num_modes); 1044 for (i = 0; i < num_modes; i++) 1045 drm_property_add_enum(dev->mode_config.tv_mode_property, i, 1046 i, modes[i]); 1047 1048 dev->mode_config.tv_brightness_property = 1049 drm_property_create_range(dev, 0, "brightness", 0, 100); 1050 1051 dev->mode_config.tv_contrast_property = 1052 drm_property_create_range(dev, 0, "contrast", 0, 100); 1053 1054 dev->mode_config.tv_flicker_reduction_property = 1055 drm_property_create_range(dev, 0, "flicker reduction", 0, 100); 1056 1057 dev->mode_config.tv_overscan_property = 1058 drm_property_create_range(dev, 0, "overscan", 0, 100); 1059 1060 dev->mode_config.tv_saturation_property = 1061 drm_property_create_range(dev, 0, "saturation", 0, 100); 1062 1063 dev->mode_config.tv_hue_property = 1064 drm_property_create_range(dev, 0, "hue", 0, 100); 1065 1066 return 0; 1067} 1068EXPORT_SYMBOL(drm_mode_create_tv_properties); 1069 1070/** 1071 * drm_mode_create_scaling_mode_property - create scaling mode property 1072 * @dev: DRM device 1073 * 1074 * Called by a driver the first time it's needed, must be attached to desired 1075 * connectors. 1076 */ 1077int drm_mode_create_scaling_mode_property(struct drm_device *dev) 1078{ 1079 struct drm_property *scaling_mode; 1080 1081 if (dev->mode_config.scaling_mode_property) 1082 return 0; 1083 1084 scaling_mode = 1085 drm_property_create_enum(dev, 0, "scaling mode", 1086 drm_scaling_mode_enum_list, 1087 ARRAY_SIZE(drm_scaling_mode_enum_list)); 1088 1089 dev->mode_config.scaling_mode_property = scaling_mode; 1090 1091 return 0; 1092} 1093EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); 1094 1095/** 1096 * drm_mode_create_dithering_property - create dithering property 1097 * @dev: DRM device 1098 * 1099 * Called by a driver the first time it's needed, must be attached to desired 1100 * connectors. 1101 */ 1102int drm_mode_create_dithering_property(struct drm_device *dev) 1103{ 1104 struct drm_property *dithering_mode; 1105 1106 if (dev->mode_config.dithering_mode_property) 1107 return 0; 1108 1109 dithering_mode = 1110 drm_property_create_enum(dev, 0, "dithering", 1111 drm_dithering_mode_enum_list, 1112 ARRAY_SIZE(drm_dithering_mode_enum_list)); 1113 dev->mode_config.dithering_mode_property = dithering_mode; 1114 1115 return 0; 1116} 1117EXPORT_SYMBOL(drm_mode_create_dithering_property); 1118 1119/** 1120 * drm_mode_create_dirty_property - create dirty property 1121 * @dev: DRM device 1122 * 1123 * Called by a driver the first time it's needed, must be attached to desired 1124 * connectors. 1125 */ 1126int drm_mode_create_dirty_info_property(struct drm_device *dev) 1127{ 1128 struct drm_property *dirty_info; 1129 1130 if (dev->mode_config.dirty_info_property) 1131 return 0; 1132 1133 dirty_info = 1134 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 1135 "dirty", 1136 drm_dirty_info_enum_list, 1137 ARRAY_SIZE(drm_dirty_info_enum_list)); 1138 dev->mode_config.dirty_info_property = dirty_info; 1139 1140 return 0; 1141} 1142EXPORT_SYMBOL(drm_mode_create_dirty_info_property); 1143 1144static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) 1145{ 1146 uint32_t total_objects = 0; 1147 1148 total_objects += dev->mode_config.num_crtc; 1149 total_objects += dev->mode_config.num_connector; 1150 total_objects += dev->mode_config.num_encoder; 1151 1152 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); 1153 if (!group->id_list) 1154 return -ENOMEM; 1155 1156 group->num_crtcs = 0; 1157 group->num_connectors = 0; 1158 group->num_encoders = 0; 1159 return 0; 1160} 1161 1162int drm_mode_group_init_legacy_group(struct drm_device *dev, 1163 struct drm_mode_group *group) 1164{ 1165 struct drm_crtc *crtc; 1166 struct drm_encoder *encoder; 1167 struct drm_connector *connector; 1168 int ret; 1169 1170 if ((ret = drm_mode_group_init(dev, group))) 1171 return ret; 1172 1173 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 1174 group->id_list[group->num_crtcs++] = crtc->base.id; 1175 1176 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 1177 group->id_list[group->num_crtcs + group->num_encoders++] = 1178 encoder->base.id; 1179 1180 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 1181 group->id_list[group->num_crtcs + group->num_encoders + 1182 group->num_connectors++] = connector->base.id; 1183 1184 return 0; 1185} 1186EXPORT_SYMBOL(drm_mode_group_init_legacy_group); 1187 1188/** 1189 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo 1190 * @out: drm_mode_modeinfo struct to return to the user 1191 * @in: drm_display_mode to use 1192 * 1193 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to 1194 * the user. 1195 */ 1196static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, 1197 const struct drm_display_mode *in) 1198{ 1199 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || 1200 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || 1201 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || 1202 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || 1203 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, 1204 "timing values too large for mode info\n"); 1205 1206 out->clock = in->clock; 1207 out->hdisplay = in->hdisplay; 1208 out->hsync_start = in->hsync_start; 1209 out->hsync_end = in->hsync_end; 1210 out->htotal = in->htotal; 1211 out->hskew = in->hskew; 1212 out->vdisplay = in->vdisplay; 1213 out->vsync_start = in->vsync_start; 1214 out->vsync_end = in->vsync_end; 1215 out->vtotal = in->vtotal; 1216 out->vscan = in->vscan; 1217 out->vrefresh = in->vrefresh; 1218 out->flags = in->flags; 1219 out->type = in->type; 1220 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1221 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1222} 1223 1224/** 1225 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode 1226 * @out: drm_display_mode to return to the user 1227 * @in: drm_mode_modeinfo to use 1228 * 1229 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to 1230 * the caller. 1231 * 1232 * RETURNS: 1233 * Zero on success, errno on failure. 1234 */ 1235static int drm_crtc_convert_umode(struct drm_display_mode *out, 1236 const struct drm_mode_modeinfo *in) 1237{ 1238 if (in->clock > INT_MAX || in->vrefresh > INT_MAX) 1239 return -ERANGE; 1240 1241 out->clock = in->clock; 1242 out->hdisplay = in->hdisplay; 1243 out->hsync_start = in->hsync_start; 1244 out->hsync_end = in->hsync_end; 1245 out->htotal = in->htotal; 1246 out->hskew = in->hskew; 1247 out->vdisplay = in->vdisplay; 1248 out->vsync_start = in->vsync_start; 1249 out->vsync_end = in->vsync_end; 1250 out->vtotal = in->vtotal; 1251 out->vscan = in->vscan; 1252 out->vrefresh = in->vrefresh; 1253 out->flags = in->flags; 1254 out->type = in->type; 1255 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1256 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1257 1258 return 0; 1259} 1260 1261/** 1262 * drm_mode_getresources - get graphics configuration 1263 * @dev: drm device for the ioctl 1264 * @data: data pointer for the ioctl 1265 * @file_priv: drm file for the ioctl call 1266 * 1267 * Construct a set of configuration description structures and return 1268 * them to the user, including CRTC, connector and framebuffer configuration. 1269 * 1270 * Called by the user via ioctl. 1271 * 1272 * RETURNS: 1273 * Zero on success, errno on failure. 1274 */ 1275int drm_mode_getresources(struct drm_device *dev, void *data, 1276 struct drm_file *file_priv) 1277{ 1278 struct drm_mode_card_res *card_res = data; 1279 struct list_head *lh; 1280 struct drm_framebuffer *fb; 1281 struct drm_connector *connector; 1282 struct drm_crtc *crtc; 1283 struct drm_encoder *encoder; 1284 int ret = 0; 1285 int connector_count = 0; 1286 int crtc_count = 0; 1287 int fb_count = 0; 1288 int encoder_count = 0; 1289 int copied = 0, i; 1290 uint32_t __user *fb_id; 1291 uint32_t __user *crtc_id; 1292 uint32_t __user *connector_id; 1293 uint32_t __user *encoder_id; 1294 struct drm_mode_group *mode_group; 1295 1296 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1297 return -EINVAL; 1298 1299 1300 mutex_lock(&file_priv->fbs_lock); 1301 /* 1302 * For the non-control nodes we need to limit the list of resources 1303 * by IDs in the group list for this node 1304 */ 1305 list_for_each(lh, &file_priv->fbs) 1306 fb_count++; 1307 1308 /* handle this in 4 parts */ 1309 /* FBs */ 1310 if (card_res->count_fbs >= fb_count) { 1311 copied = 0; 1312 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; 1313 list_for_each_entry(fb, &file_priv->fbs, filp_head) { 1314 if (put_user(fb->base.id, fb_id + copied)) { 1315 mutex_unlock(&file_priv->fbs_lock); 1316 return -EFAULT; 1317 } 1318 copied++; 1319 } 1320 } 1321 card_res->count_fbs = fb_count; 1322 mutex_unlock(&file_priv->fbs_lock); 1323 1324 drm_modeset_lock_all(dev); 1325 mode_group = &file_priv->master->minor->mode_group; 1326 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1327 1328 list_for_each(lh, &dev->mode_config.crtc_list) 1329 crtc_count++; 1330 1331 list_for_each(lh, &dev->mode_config.connector_list) 1332 connector_count++; 1333 1334 list_for_each(lh, &dev->mode_config.encoder_list) 1335 encoder_count++; 1336 } else { 1337 1338 crtc_count = mode_group->num_crtcs; 1339 connector_count = mode_group->num_connectors; 1340 encoder_count = mode_group->num_encoders; 1341 } 1342 1343 card_res->max_height = dev->mode_config.max_height; 1344 card_res->min_height = dev->mode_config.min_height; 1345 card_res->max_width = dev->mode_config.max_width; 1346 card_res->min_width = dev->mode_config.min_width; 1347 1348 /* CRTCs */ 1349 if (card_res->count_crtcs >= crtc_count) { 1350 copied = 0; 1351 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; 1352 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1353 list_for_each_entry(crtc, &dev->mode_config.crtc_list, 1354 head) { 1355 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 1356 if (put_user(crtc->base.id, crtc_id + copied)) { 1357 ret = -EFAULT; 1358 goto out; 1359 } 1360 copied++; 1361 } 1362 } else { 1363 for (i = 0; i < mode_group->num_crtcs; i++) { 1364 if (put_user(mode_group->id_list[i], 1365 crtc_id + copied)) { 1366 ret = -EFAULT; 1367 goto out; 1368 } 1369 copied++; 1370 } 1371 } 1372 } 1373 card_res->count_crtcs = crtc_count; 1374 1375 /* Encoders */ 1376 if (card_res->count_encoders >= encoder_count) { 1377 copied = 0; 1378 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; 1379 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1380 list_for_each_entry(encoder, 1381 &dev->mode_config.encoder_list, 1382 head) { 1383 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id, 1384 drm_get_encoder_name(encoder)); 1385 if (put_user(encoder->base.id, encoder_id + 1386 copied)) { 1387 ret = -EFAULT; 1388 goto out; 1389 } 1390 copied++; 1391 } 1392 } else { 1393 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { 1394 if (put_user(mode_group->id_list[i], 1395 encoder_id + copied)) { 1396 ret = -EFAULT; 1397 goto out; 1398 } 1399 copied++; 1400 } 1401 1402 } 1403 } 1404 card_res->count_encoders = encoder_count; 1405 1406 /* Connectors */ 1407 if (card_res->count_connectors >= connector_count) { 1408 copied = 0; 1409 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; 1410 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1411 list_for_each_entry(connector, 1412 &dev->mode_config.connector_list, 1413 head) { 1414 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 1415 connector->base.id, 1416 drm_get_connector_name(connector)); 1417 if (put_user(connector->base.id, 1418 connector_id + copied)) { 1419 ret = -EFAULT; 1420 goto out; 1421 } 1422 copied++; 1423 } 1424 } else { 1425 int start = mode_group->num_crtcs + 1426 mode_group->num_encoders; 1427 for (i = start; i < start + mode_group->num_connectors; i++) { 1428 if (put_user(mode_group->id_list[i], 1429 connector_id + copied)) { 1430 ret = -EFAULT; 1431 goto out; 1432 } 1433 copied++; 1434 } 1435 } 1436 } 1437 card_res->count_connectors = connector_count; 1438 1439 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs, 1440 card_res->count_connectors, card_res->count_encoders); 1441 1442out: 1443 drm_modeset_unlock_all(dev); 1444 return ret; 1445} 1446 1447/** 1448 * drm_mode_getcrtc - get CRTC configuration 1449 * @dev: drm device for the ioctl 1450 * @data: data pointer for the ioctl 1451 * @file_priv: drm file for the ioctl call 1452 * 1453 * Construct a CRTC configuration structure to return to the user. 1454 * 1455 * Called by the user via ioctl. 1456 * 1457 * RETURNS: 1458 * Zero on success, errno on failure. 1459 */ 1460int drm_mode_getcrtc(struct drm_device *dev, 1461 void *data, struct drm_file *file_priv) 1462{ 1463 struct drm_mode_crtc *crtc_resp = data; 1464 struct drm_crtc *crtc; 1465 struct drm_mode_object *obj; 1466 int ret = 0; 1467 1468 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1469 return -EINVAL; 1470 1471 drm_modeset_lock_all(dev); 1472 1473 obj = drm_mode_object_find(dev, crtc_resp->crtc_id, 1474 DRM_MODE_OBJECT_CRTC); 1475 if (!obj) { 1476 ret = -EINVAL; 1477 goto out; 1478 } 1479 crtc = obj_to_crtc(obj); 1480 1481 crtc_resp->x = crtc->x; 1482 crtc_resp->y = crtc->y; 1483 crtc_resp->gamma_size = crtc->gamma_size; 1484 if (crtc->fb) 1485 crtc_resp->fb_id = crtc->fb->base.id; 1486 else 1487 crtc_resp->fb_id = 0; 1488 1489 if (crtc->enabled) { 1490 1491 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); 1492 crtc_resp->mode_valid = 1; 1493 1494 } else { 1495 crtc_resp->mode_valid = 0; 1496 } 1497 1498out: 1499 drm_modeset_unlock_all(dev); 1500 return ret; 1501} 1502 1503/** 1504 * drm_mode_getconnector - get connector configuration 1505 * @dev: drm device for the ioctl 1506 * @data: data pointer for the ioctl 1507 * @file_priv: drm file for the ioctl call 1508 * 1509 * Construct a connector configuration structure to return to the user. 1510 * 1511 * Called by the user via ioctl. 1512 * 1513 * RETURNS: 1514 * Zero on success, errno on failure. 1515 */ 1516int drm_mode_getconnector(struct drm_device *dev, void *data, 1517 struct drm_file *file_priv) 1518{ 1519 struct drm_mode_get_connector *out_resp = data; 1520 struct drm_mode_object *obj; 1521 struct drm_connector *connector; 1522 struct drm_display_mode *mode; 1523 int mode_count = 0; 1524 int props_count = 0; 1525 int encoders_count = 0; 1526 int ret = 0; 1527 int copied = 0; 1528 int i; 1529 struct drm_mode_modeinfo u_mode; 1530 struct drm_mode_modeinfo __user *mode_ptr; 1531 uint32_t __user *prop_ptr; 1532 uint64_t __user *prop_values; 1533 uint32_t __user *encoder_ptr; 1534 1535 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1536 return -EINVAL; 1537 1538 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); 1539 1540 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id); 1541 1542 mutex_lock(&dev->mode_config.mutex); 1543 1544 obj = drm_mode_object_find(dev, out_resp->connector_id, 1545 DRM_MODE_OBJECT_CONNECTOR); 1546 if (!obj) { 1547 ret = -EINVAL; 1548 goto out; 1549 } 1550 connector = obj_to_connector(obj); 1551 1552 props_count = connector->properties.count; 1553 1554 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1555 if (connector->encoder_ids[i] != 0) { 1556 encoders_count++; 1557 } 1558 } 1559 1560 if (out_resp->count_modes == 0) { 1561 connector->funcs->fill_modes(connector, 1562 dev->mode_config.max_width, 1563 dev->mode_config.max_height); 1564 } 1565 1566 /* delayed so we get modes regardless of pre-fill_modes state */ 1567 list_for_each_entry(mode, &connector->modes, head) 1568 mode_count++; 1569 1570 out_resp->connector_id = connector->base.id; 1571 out_resp->connector_type = connector->connector_type; 1572 out_resp->connector_type_id = connector->connector_type_id; 1573 out_resp->mm_width = connector->display_info.width_mm; 1574 out_resp->mm_height = connector->display_info.height_mm; 1575 out_resp->subpixel = connector->display_info.subpixel_order; 1576 out_resp->connection = connector->status; 1577 if (connector->encoder) 1578 out_resp->encoder_id = connector->encoder->base.id; 1579 else 1580 out_resp->encoder_id = 0; 1581 1582 /* 1583 * This ioctl is called twice, once to determine how much space is 1584 * needed, and the 2nd time to fill it. 1585 */ 1586 if ((out_resp->count_modes >= mode_count) && mode_count) { 1587 copied = 0; 1588 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; 1589 list_for_each_entry(mode, &connector->modes, head) { 1590 drm_crtc_convert_to_umode(&u_mode, mode); 1591 if (copy_to_user(mode_ptr + copied, 1592 &u_mode, sizeof(u_mode))) { 1593 ret = -EFAULT; 1594 goto out; 1595 } 1596 copied++; 1597 } 1598 } 1599 out_resp->count_modes = mode_count; 1600 1601 if ((out_resp->count_props >= props_count) && props_count) { 1602 copied = 0; 1603 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr); 1604 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr); 1605 for (i = 0; i < connector->properties.count; i++) { 1606 if (put_user(connector->properties.ids[i], 1607 prop_ptr + copied)) { 1608 ret = -EFAULT; 1609 goto out; 1610 } 1611 1612 if (put_user(connector->properties.values[i], 1613 prop_values + copied)) { 1614 ret = -EFAULT; 1615 goto out; 1616 } 1617 copied++; 1618 } 1619 } 1620 out_resp->count_props = props_count; 1621 1622 if ((out_resp->count_encoders >= encoders_count) && encoders_count) { 1623 copied = 0; 1624 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); 1625 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1626 if (connector->encoder_ids[i] != 0) { 1627 if (put_user(connector->encoder_ids[i], 1628 encoder_ptr + copied)) { 1629 ret = -EFAULT; 1630 goto out; 1631 } 1632 copied++; 1633 } 1634 } 1635 } 1636 out_resp->count_encoders = encoders_count; 1637 1638out: 1639 mutex_unlock(&dev->mode_config.mutex); 1640 1641 return ret; 1642} 1643 1644int drm_mode_getencoder(struct drm_device *dev, void *data, 1645 struct drm_file *file_priv) 1646{ 1647 struct drm_mode_get_encoder *enc_resp = data; 1648 struct drm_mode_object *obj; 1649 struct drm_encoder *encoder; 1650 int ret = 0; 1651 1652 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1653 return -EINVAL; 1654 1655 drm_modeset_lock_all(dev); 1656 obj = drm_mode_object_find(dev, enc_resp->encoder_id, 1657 DRM_MODE_OBJECT_ENCODER); 1658 if (!obj) { 1659 ret = -EINVAL; 1660 goto out; 1661 } 1662 encoder = obj_to_encoder(obj); 1663 1664 if (encoder->crtc) 1665 enc_resp->crtc_id = encoder->crtc->base.id; 1666 else 1667 enc_resp->crtc_id = 0; 1668 enc_resp->encoder_type = encoder->encoder_type; 1669 enc_resp->encoder_id = encoder->base.id; 1670 enc_resp->possible_crtcs = encoder->possible_crtcs; 1671 enc_resp->possible_clones = encoder->possible_clones; 1672 1673out: 1674 drm_modeset_unlock_all(dev); 1675 return ret; 1676} 1677 1678/** 1679 * drm_mode_getplane_res - get plane info 1680 * @dev: DRM device 1681 * @data: ioctl data 1682 * @file_priv: DRM file info 1683 * 1684 * Return an plane count and set of IDs. 1685 */ 1686int drm_mode_getplane_res(struct drm_device *dev, void *data, 1687 struct drm_file *file_priv) 1688{ 1689 struct drm_mode_get_plane_res *plane_resp = data; 1690 struct drm_mode_config *config; 1691 struct drm_plane *plane; 1692 uint32_t __user *plane_ptr; 1693 int copied = 0, ret = 0; 1694 1695 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1696 return -EINVAL; 1697 1698 drm_modeset_lock_all(dev); 1699 config = &dev->mode_config; 1700 1701 /* 1702 * This ioctl is called twice, once to determine how much space is 1703 * needed, and the 2nd time to fill it. 1704 */ 1705 if (config->num_plane && 1706 (plane_resp->count_planes >= config->num_plane)) { 1707 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; 1708 1709 list_for_each_entry(plane, &config->plane_list, head) { 1710 if (put_user(plane->base.id, plane_ptr + copied)) { 1711 ret = -EFAULT; 1712 goto out; 1713 } 1714 copied++; 1715 } 1716 } 1717 plane_resp->count_planes = config->num_plane; 1718 1719out: 1720 drm_modeset_unlock_all(dev); 1721 return ret; 1722} 1723 1724/** 1725 * drm_mode_getplane - get plane info 1726 * @dev: DRM device 1727 * @data: ioctl data 1728 * @file_priv: DRM file info 1729 * 1730 * Return plane info, including formats supported, gamma size, any 1731 * current fb, etc. 1732 */ 1733int drm_mode_getplane(struct drm_device *dev, void *data, 1734 struct drm_file *file_priv) 1735{ 1736 struct drm_mode_get_plane *plane_resp = data; 1737 struct drm_mode_object *obj; 1738 struct drm_plane *plane; 1739 uint32_t __user *format_ptr; 1740 int ret = 0; 1741 1742 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1743 return -EINVAL; 1744 1745 drm_modeset_lock_all(dev); 1746 obj = drm_mode_object_find(dev, plane_resp->plane_id, 1747 DRM_MODE_OBJECT_PLANE); 1748 if (!obj) { 1749 ret = -ENOENT; 1750 goto out; 1751 } 1752 plane = obj_to_plane(obj); 1753 1754 if (plane->crtc) 1755 plane_resp->crtc_id = plane->crtc->base.id; 1756 else 1757 plane_resp->crtc_id = 0; 1758 1759 if (plane->fb) 1760 plane_resp->fb_id = plane->fb->base.id; 1761 else 1762 plane_resp->fb_id = 0; 1763 1764 plane_resp->plane_id = plane->base.id; 1765 plane_resp->possible_crtcs = plane->possible_crtcs; 1766 plane_resp->gamma_size = plane->gamma_size; 1767 1768 /* 1769 * This ioctl is called twice, once to determine how much space is 1770 * needed, and the 2nd time to fill it. 1771 */ 1772 if (plane->format_count && 1773 (plane_resp->count_format_types >= plane->format_count)) { 1774 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; 1775 if (copy_to_user(format_ptr, 1776 plane->format_types, 1777 sizeof(uint32_t) * plane->format_count)) { 1778 ret = -EFAULT; 1779 goto out; 1780 } 1781 } 1782 plane_resp->count_format_types = plane->format_count; 1783 1784out: 1785 drm_modeset_unlock_all(dev); 1786 return ret; 1787} 1788 1789/** 1790 * drm_mode_setplane - set up or tear down an plane 1791 * @dev: DRM device 1792 * @data: ioctl data* 1793 * @file_priv: DRM file info 1794 * 1795 * Set plane info, including placement, fb, scaling, and other factors. 1796 * Or pass a NULL fb to disable. 1797 */ 1798int drm_mode_setplane(struct drm_device *dev, void *data, 1799 struct drm_file *file_priv) 1800{ 1801 struct drm_mode_set_plane *plane_req = data; 1802 struct drm_mode_object *obj; 1803 struct drm_plane *plane; 1804 struct drm_crtc *crtc; 1805 struct drm_framebuffer *fb = NULL, *old_fb = NULL; 1806 int ret = 0; 1807 unsigned int fb_width, fb_height; 1808 int i; 1809 1810 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1811 return -EINVAL; 1812 1813 /* 1814 * First, find the plane, crtc, and fb objects. If not available, 1815 * we don't bother to call the driver. 1816 */ 1817 obj = drm_mode_object_find(dev, plane_req->plane_id, 1818 DRM_MODE_OBJECT_PLANE); 1819 if (!obj) { 1820 DRM_DEBUG_KMS("Unknown plane ID %d\n", 1821 plane_req->plane_id); 1822 return -ENOENT; 1823 } 1824 plane = obj_to_plane(obj); 1825 1826 /* No fb means shut it down */ 1827 if (!plane_req->fb_id) { 1828 drm_modeset_lock_all(dev); 1829 old_fb = plane->fb; 1830 plane->funcs->disable_plane(plane); 1831 plane->crtc = NULL; 1832 plane->fb = NULL; 1833 drm_modeset_unlock_all(dev); 1834 goto out; 1835 } 1836 1837 obj = drm_mode_object_find(dev, plane_req->crtc_id, 1838 DRM_MODE_OBJECT_CRTC); 1839 if (!obj) { 1840 DRM_DEBUG_KMS("Unknown crtc ID %d\n", 1841 plane_req->crtc_id); 1842 ret = -ENOENT; 1843 goto out; 1844 } 1845 crtc = obj_to_crtc(obj); 1846 1847 fb = drm_framebuffer_lookup(dev, plane_req->fb_id); 1848 if (!fb) { 1849 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", 1850 plane_req->fb_id); 1851 ret = -ENOENT; 1852 goto out; 1853 } 1854 1855 /* Check whether this plane supports the fb pixel format. */ 1856 for (i = 0; i < plane->format_count; i++) 1857 if (fb->pixel_format == plane->format_types[i]) 1858 break; 1859 if (i == plane->format_count) { 1860 DRM_DEBUG_KMS("Invalid pixel format %s\n", 1861 drm_get_format_name(fb->pixel_format)); 1862 ret = -EINVAL; 1863 goto out; 1864 } 1865 1866 fb_width = fb->width << 16; 1867 fb_height = fb->height << 16; 1868 1869 /* Make sure source coordinates are inside the fb. */ 1870 if (plane_req->src_w > fb_width || 1871 plane_req->src_x > fb_width - plane_req->src_w || 1872 plane_req->src_h > fb_height || 1873 plane_req->src_y > fb_height - plane_req->src_h) { 1874 DRM_DEBUG_KMS("Invalid source coordinates " 1875 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", 1876 plane_req->src_w >> 16, 1877 ((plane_req->src_w & 0xffff) * 15625) >> 10, 1878 plane_req->src_h >> 16, 1879 ((plane_req->src_h & 0xffff) * 15625) >> 10, 1880 plane_req->src_x >> 16, 1881 ((plane_req->src_x & 0xffff) * 15625) >> 10, 1882 plane_req->src_y >> 16, 1883 ((plane_req->src_y & 0xffff) * 15625) >> 10); 1884 ret = -ENOSPC; 1885 goto out; 1886 } 1887 1888 /* Give drivers some help against integer overflows */ 1889 if (plane_req->crtc_w > INT_MAX || 1890 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w || 1891 plane_req->crtc_h > INT_MAX || 1892 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) { 1893 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", 1894 plane_req->crtc_w, plane_req->crtc_h, 1895 plane_req->crtc_x, plane_req->crtc_y); 1896 ret = -ERANGE; 1897 goto out; 1898 } 1899 1900 drm_modeset_lock_all(dev); 1901 ret = plane->funcs->update_plane(plane, crtc, fb, 1902 plane_req->crtc_x, plane_req->crtc_y, 1903 plane_req->crtc_w, plane_req->crtc_h, 1904 plane_req->src_x, plane_req->src_y, 1905 plane_req->src_w, plane_req->src_h); 1906 if (!ret) { 1907 old_fb = plane->fb; 1908 plane->crtc = crtc; 1909 plane->fb = fb; 1910 fb = NULL; 1911 } 1912 drm_modeset_unlock_all(dev); 1913 1914out: 1915 if (fb) 1916 drm_framebuffer_unreference(fb); 1917 if (old_fb) 1918 drm_framebuffer_unreference(old_fb); 1919 1920 return ret; 1921} 1922 1923/** 1924 * drm_mode_set_config_internal - helper to call ->set_config 1925 * @set: modeset config to set 1926 * 1927 * This is a little helper to wrap internal calls to the ->set_config driver 1928 * interface. The only thing it adds is correct refcounting dance. 1929 */ 1930int drm_mode_set_config_internal(struct drm_mode_set *set) 1931{ 1932 struct drm_crtc *crtc = set->crtc; 1933 struct drm_framebuffer *fb, *old_fb; 1934 int ret; 1935 1936 old_fb = crtc->fb; 1937 fb = set->fb; 1938 1939 ret = crtc->funcs->set_config(set); 1940 if (ret == 0) { 1941 if (old_fb) 1942 drm_framebuffer_unreference(old_fb); 1943 if (fb) 1944 drm_framebuffer_reference(fb); 1945 } 1946 1947 return ret; 1948} 1949EXPORT_SYMBOL(drm_mode_set_config_internal); 1950 1951/** 1952 * drm_mode_setcrtc - set CRTC configuration 1953 * @dev: drm device for the ioctl 1954 * @data: data pointer for the ioctl 1955 * @file_priv: drm file for the ioctl call 1956 * 1957 * Build a new CRTC configuration based on user request. 1958 * 1959 * Called by the user via ioctl. 1960 * 1961 * RETURNS: 1962 * Zero on success, errno on failure. 1963 */ 1964int drm_mode_setcrtc(struct drm_device *dev, void *data, 1965 struct drm_file *file_priv) 1966{ 1967 struct drm_mode_config *config = &dev->mode_config; 1968 struct drm_mode_crtc *crtc_req = data; 1969 struct drm_mode_object *obj; 1970 struct drm_crtc *crtc; 1971 struct drm_connector **connector_set = NULL, *connector; 1972 struct drm_framebuffer *fb = NULL; 1973 struct drm_display_mode *mode = NULL; 1974 struct drm_mode_set set; 1975 uint32_t __user *set_connectors_ptr; 1976 int ret; 1977 int i; 1978 1979 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1980 return -EINVAL; 1981 1982 /* For some reason crtc x/y offsets are signed internally. */ 1983 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX) 1984 return -ERANGE; 1985 1986 drm_modeset_lock_all(dev); 1987 obj = drm_mode_object_find(dev, crtc_req->crtc_id, 1988 DRM_MODE_OBJECT_CRTC); 1989 if (!obj) { 1990 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); 1991 ret = -EINVAL; 1992 goto out; 1993 } 1994 crtc = obj_to_crtc(obj); 1995 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 1996 1997 if (crtc_req->mode_valid) { 1998 int hdisplay, vdisplay; 1999 /* If we have a mode we need a framebuffer. */ 2000 /* If we pass -1, set the mode with the currently bound fb */ 2001 if (crtc_req->fb_id == -1) { 2002 if (!crtc->fb) { 2003 DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); 2004 ret = -EINVAL; 2005 goto out; 2006 } 2007 fb = crtc->fb; 2008 /* Make refcounting symmetric with the lookup path. */ 2009 drm_framebuffer_reference(fb); 2010 } else { 2011 fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); 2012 if (!fb) { 2013 DRM_DEBUG_KMS("Unknown FB ID%d\n", 2014 crtc_req->fb_id); 2015 ret = -EINVAL; 2016 goto out; 2017 } 2018 } 2019 2020 mode = drm_mode_create(dev); 2021 if (!mode) { 2022 ret = -ENOMEM; 2023 goto out; 2024 } 2025 2026 ret = drm_crtc_convert_umode(mode, &crtc_req->mode); 2027 if (ret) { 2028 DRM_DEBUG_KMS("Invalid mode\n"); 2029 goto out; 2030 } 2031 2032 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 2033 2034 hdisplay = mode->hdisplay; 2035 vdisplay = mode->vdisplay; 2036 2037 if (crtc->invert_dimensions) 2038 swap(hdisplay, vdisplay); 2039 2040 if (hdisplay > fb->width || 2041 vdisplay > fb->height || 2042 crtc_req->x > fb->width - hdisplay || 2043 crtc_req->y > fb->height - vdisplay) { 2044 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", 2045 fb->width, fb->height, 2046 hdisplay, vdisplay, crtc_req->x, crtc_req->y, 2047 crtc->invert_dimensions ? " (inverted)" : ""); 2048 ret = -ENOSPC; 2049 goto out; 2050 } 2051 } 2052 2053 if (crtc_req->count_connectors == 0 && mode) { 2054 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); 2055 ret = -EINVAL; 2056 goto out; 2057 } 2058 2059 if (crtc_req->count_connectors > 0 && (!mode || !fb)) { 2060 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", 2061 crtc_req->count_connectors); 2062 ret = -EINVAL; 2063 goto out; 2064 } 2065 2066 if (crtc_req->count_connectors > 0) { 2067 u32 out_id; 2068 2069 /* Avoid unbounded kernel memory allocation */ 2070 if (crtc_req->count_connectors > config->num_connector) { 2071 ret = -EINVAL; 2072 goto out; 2073 } 2074 2075 connector_set = kmalloc(crtc_req->count_connectors * 2076 sizeof(struct drm_connector *), 2077 GFP_KERNEL); 2078 if (!connector_set) { 2079 ret = -ENOMEM; 2080 goto out; 2081 } 2082 2083 for (i = 0; i < crtc_req->count_connectors; i++) { 2084 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; 2085 if (get_user(out_id, &set_connectors_ptr[i])) { 2086 ret = -EFAULT; 2087 goto out; 2088 } 2089 2090 obj = drm_mode_object_find(dev, out_id, 2091 DRM_MODE_OBJECT_CONNECTOR); 2092 if (!obj) { 2093 DRM_DEBUG_KMS("Connector id %d unknown\n", 2094 out_id); 2095 ret = -EINVAL; 2096 goto out; 2097 } 2098 connector = obj_to_connector(obj); 2099 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 2100 connector->base.id, 2101 drm_get_connector_name(connector)); 2102 2103 connector_set[i] = connector; 2104 } 2105 } 2106 2107 set.crtc = crtc; 2108 set.x = crtc_req->x; 2109 set.y = crtc_req->y; 2110 set.mode = mode; 2111 set.connectors = connector_set; 2112 set.num_connectors = crtc_req->count_connectors; 2113 set.fb = fb; 2114 ret = drm_mode_set_config_internal(&set); 2115 2116out: 2117 if (fb) 2118 drm_framebuffer_unreference(fb); 2119 2120 kfree(connector_set); 2121 drm_mode_destroy(dev, mode); 2122 drm_modeset_unlock_all(dev); 2123 return ret; 2124} 2125 2126int drm_mode_cursor_ioctl(struct drm_device *dev, 2127 void *data, struct drm_file *file_priv) 2128{ 2129 struct drm_mode_cursor *req = data; 2130 struct drm_mode_object *obj; 2131 struct drm_crtc *crtc; 2132 int ret = 0; 2133 2134 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2135 return -EINVAL; 2136 2137 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) 2138 return -EINVAL; 2139 2140 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC); 2141 if (!obj) { 2142 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); 2143 return -EINVAL; 2144 } 2145 crtc = obj_to_crtc(obj); 2146 2147 mutex_lock(&crtc->mutex); 2148 if (req->flags & DRM_MODE_CURSOR_BO) { 2149 if (!crtc->funcs->cursor_set) { 2150 ret = -ENXIO; 2151 goto out; 2152 } 2153 /* Turns off the cursor if handle is 0 */ 2154 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, 2155 req->width, req->height); 2156 } 2157 2158 if (req->flags & DRM_MODE_CURSOR_MOVE) { 2159 if (crtc->funcs->cursor_move) { 2160 ret = crtc->funcs->cursor_move(crtc, req->x, req->y); 2161 } else { 2162 ret = -EFAULT; 2163 goto out; 2164 } 2165 } 2166out: 2167 mutex_unlock(&crtc->mutex); 2168 2169 return ret; 2170} 2171 2172/* Original addfb only supported RGB formats, so figure out which one */ 2173uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) 2174{ 2175 uint32_t fmt; 2176 2177 switch (bpp) { 2178 case 8: 2179 fmt = DRM_FORMAT_C8; 2180 break; 2181 case 16: 2182 if (depth == 15) 2183 fmt = DRM_FORMAT_XRGB1555; 2184 else 2185 fmt = DRM_FORMAT_RGB565; 2186 break; 2187 case 24: 2188 fmt = DRM_FORMAT_RGB888; 2189 break; 2190 case 32: 2191 if (depth == 24) 2192 fmt = DRM_FORMAT_XRGB8888; 2193 else if (depth == 30) 2194 fmt = DRM_FORMAT_XRGB2101010; 2195 else 2196 fmt = DRM_FORMAT_ARGB8888; 2197 break; 2198 default: 2199 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n"); 2200 fmt = DRM_FORMAT_XRGB8888; 2201 break; 2202 } 2203 2204 return fmt; 2205} 2206EXPORT_SYMBOL(drm_mode_legacy_fb_format); 2207 2208/** 2209 * drm_mode_addfb - add an FB to the graphics configuration 2210 * @dev: drm device for the ioctl 2211 * @data: data pointer for the ioctl 2212 * @file_priv: drm file for the ioctl call 2213 * 2214 * Add a new FB to the specified CRTC, given a user request. 2215 * 2216 * Called by the user via ioctl. 2217 * 2218 * RETURNS: 2219 * Zero on success, errno on failure. 2220 */ 2221int drm_mode_addfb(struct drm_device *dev, 2222 void *data, struct drm_file *file_priv) 2223{ 2224 struct drm_mode_fb_cmd *or = data; 2225 struct drm_mode_fb_cmd2 r = {}; 2226 struct drm_mode_config *config = &dev->mode_config; 2227 struct drm_framebuffer *fb; 2228 int ret = 0; 2229 2230 /* Use new struct with format internally */ 2231 r.fb_id = or->fb_id; 2232 r.width = or->width; 2233 r.height = or->height; 2234 r.pitches[0] = or->pitch; 2235 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); 2236 r.handles[0] = or->handle; 2237 2238 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2239 return -EINVAL; 2240 2241 if ((config->min_width > r.width) || (r.width > config->max_width)) 2242 return -EINVAL; 2243 2244 if ((config->min_height > r.height) || (r.height > config->max_height)) 2245 return -EINVAL; 2246 2247 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r); 2248 if (IS_ERR(fb)) { 2249 DRM_DEBUG_KMS("could not create framebuffer\n"); 2250 return PTR_ERR(fb); 2251 } 2252 2253 mutex_lock(&file_priv->fbs_lock); 2254 or->fb_id = fb->base.id; 2255 list_add(&fb->filp_head, &file_priv->fbs); 2256 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2257 mutex_unlock(&file_priv->fbs_lock); 2258 2259 return ret; 2260} 2261 2262static int format_check(const struct drm_mode_fb_cmd2 *r) 2263{ 2264 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN; 2265 2266 switch (format) { 2267 case DRM_FORMAT_C8: 2268 case DRM_FORMAT_RGB332: 2269 case DRM_FORMAT_BGR233: 2270 case DRM_FORMAT_XRGB4444: 2271 case DRM_FORMAT_XBGR4444: 2272 case DRM_FORMAT_RGBX4444: 2273 case DRM_FORMAT_BGRX4444: 2274 case DRM_FORMAT_ARGB4444: 2275 case DRM_FORMAT_ABGR4444: 2276 case DRM_FORMAT_RGBA4444: 2277 case DRM_FORMAT_BGRA4444: 2278 case DRM_FORMAT_XRGB1555: 2279 case DRM_FORMAT_XBGR1555: 2280 case DRM_FORMAT_RGBX5551: 2281 case DRM_FORMAT_BGRX5551: 2282 case DRM_FORMAT_ARGB1555: 2283 case DRM_FORMAT_ABGR1555: 2284 case DRM_FORMAT_RGBA5551: 2285 case DRM_FORMAT_BGRA5551: 2286 case DRM_FORMAT_RGB565: 2287 case DRM_FORMAT_BGR565: 2288 case DRM_FORMAT_RGB888: 2289 case DRM_FORMAT_BGR888: 2290 case DRM_FORMAT_XRGB8888: 2291 case DRM_FORMAT_XBGR8888: 2292 case DRM_FORMAT_RGBX8888: 2293 case DRM_FORMAT_BGRX8888: 2294 case DRM_FORMAT_ARGB8888: 2295 case DRM_FORMAT_ABGR8888: 2296 case DRM_FORMAT_RGBA8888: 2297 case DRM_FORMAT_BGRA8888: 2298 case DRM_FORMAT_XRGB2101010: 2299 case DRM_FORMAT_XBGR2101010: 2300 case DRM_FORMAT_RGBX1010102: 2301 case DRM_FORMAT_BGRX1010102: 2302 case DRM_FORMAT_ARGB2101010: 2303 case DRM_FORMAT_ABGR2101010: 2304 case DRM_FORMAT_RGBA1010102: 2305 case DRM_FORMAT_BGRA1010102: 2306 case DRM_FORMAT_YUYV: 2307 case DRM_FORMAT_YVYU: 2308 case DRM_FORMAT_UYVY: 2309 case DRM_FORMAT_VYUY: 2310 case DRM_FORMAT_AYUV: 2311 case DRM_FORMAT_NV12: 2312 case DRM_FORMAT_NV21: 2313 case DRM_FORMAT_NV16: 2314 case DRM_FORMAT_NV61: 2315 case DRM_FORMAT_NV24: 2316 case DRM_FORMAT_NV42: 2317 case DRM_FORMAT_YUV410: 2318 case DRM_FORMAT_YVU410: 2319 case DRM_FORMAT_YUV411: 2320 case DRM_FORMAT_YVU411: 2321 case DRM_FORMAT_YUV420: 2322 case DRM_FORMAT_YVU420: 2323 case DRM_FORMAT_YUV422: 2324 case DRM_FORMAT_YVU422: 2325 case DRM_FORMAT_YUV444: 2326 case DRM_FORMAT_YVU444: 2327 return 0; 2328 default: 2329 return -EINVAL; 2330 } 2331} 2332 2333static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) 2334{ 2335 int ret, hsub, vsub, num_planes, i; 2336 2337 ret = format_check(r); 2338 if (ret) { 2339 DRM_DEBUG_KMS("bad framebuffer format %s\n", 2340 drm_get_format_name(r->pixel_format)); 2341 return ret; 2342 } 2343 2344 hsub = drm_format_horz_chroma_subsampling(r->pixel_format); 2345 vsub = drm_format_vert_chroma_subsampling(r->pixel_format); 2346 num_planes = drm_format_num_planes(r->pixel_format); 2347 2348 if (r->width == 0 || r->width % hsub) { 2349 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height); 2350 return -EINVAL; 2351 } 2352 2353 if (r->height == 0 || r->height % vsub) { 2354 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height); 2355 return -EINVAL; 2356 } 2357 2358 for (i = 0; i < num_planes; i++) { 2359 unsigned int width = r->width / (i != 0 ? hsub : 1); 2360 unsigned int height = r->height / (i != 0 ? vsub : 1); 2361 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i); 2362 2363 if (!r->handles[i]) { 2364 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i); 2365 return -EINVAL; 2366 } 2367 2368 if ((uint64_t) width * cpp > UINT_MAX) 2369 return -ERANGE; 2370 2371 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) 2372 return -ERANGE; 2373 2374 if (r->pitches[i] < width * cpp) { 2375 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i); 2376 return -EINVAL; 2377 } 2378 } 2379 2380 return 0; 2381} 2382 2383/** 2384 * drm_mode_addfb2 - add an FB to the graphics configuration 2385 * @dev: drm device for the ioctl 2386 * @data: data pointer for the ioctl 2387 * @file_priv: drm file for the ioctl call 2388 * 2389 * Add a new FB to the specified CRTC, given a user request with format. 2390 * 2391 * Called by the user via ioctl. 2392 * 2393 * RETURNS: 2394 * Zero on success, errno on failure. 2395 */ 2396int drm_mode_addfb2(struct drm_device *dev, 2397 void *data, struct drm_file *file_priv) 2398{ 2399 struct drm_mode_fb_cmd2 *r = data; 2400 struct drm_mode_config *config = &dev->mode_config; 2401 struct drm_framebuffer *fb; 2402 int ret; 2403 2404 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2405 return -EINVAL; 2406 2407 if (r->flags & ~DRM_MODE_FB_INTERLACED) { 2408 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags); 2409 return -EINVAL; 2410 } 2411 2412 if ((config->min_width > r->width) || (r->width > config->max_width)) { 2413 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n", 2414 r->width, config->min_width, config->max_width); 2415 return -EINVAL; 2416 } 2417 if ((config->min_height > r->height) || (r->height > config->max_height)) { 2418 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n", 2419 r->height, config->min_height, config->max_height); 2420 return -EINVAL; 2421 } 2422 2423 ret = framebuffer_check(r); 2424 if (ret) 2425 return ret; 2426 2427 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); 2428 if (IS_ERR(fb)) { 2429 DRM_DEBUG_KMS("could not create framebuffer\n"); 2430 return PTR_ERR(fb); 2431 } 2432 2433 mutex_lock(&file_priv->fbs_lock); 2434 r->fb_id = fb->base.id; 2435 list_add(&fb->filp_head, &file_priv->fbs); 2436 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2437 mutex_unlock(&file_priv->fbs_lock); 2438 2439 2440 return ret; 2441} 2442 2443/** 2444 * drm_mode_rmfb - remove an FB from the configuration 2445 * @dev: drm device for the ioctl 2446 * @data: data pointer for the ioctl 2447 * @file_priv: drm file for the ioctl call 2448 * 2449 * Remove the FB specified by the user. 2450 * 2451 * Called by the user via ioctl. 2452 * 2453 * RETURNS: 2454 * Zero on success, errno on failure. 2455 */ 2456int drm_mode_rmfb(struct drm_device *dev, 2457 void *data, struct drm_file *file_priv) 2458{ 2459 struct drm_framebuffer *fb = NULL; 2460 struct drm_framebuffer *fbl = NULL; 2461 uint32_t *id = data; 2462 int found = 0; 2463 2464 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2465 return -EINVAL; 2466 2467 mutex_lock(&file_priv->fbs_lock); 2468 mutex_lock(&dev->mode_config.fb_lock); 2469 fb = __drm_framebuffer_lookup(dev, *id); 2470 if (!fb) 2471 goto fail_lookup; 2472 2473 list_for_each_entry(fbl, &file_priv->fbs, filp_head) 2474 if (fb == fbl) 2475 found = 1; 2476 if (!found) 2477 goto fail_lookup; 2478 2479 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ 2480 __drm_framebuffer_unregister(dev, fb); 2481 2482 list_del_init(&fb->filp_head); 2483 mutex_unlock(&dev->mode_config.fb_lock); 2484 mutex_unlock(&file_priv->fbs_lock); 2485 2486 drm_framebuffer_remove(fb); 2487 2488 return 0; 2489 2490fail_lookup: 2491 mutex_unlock(&dev->mode_config.fb_lock); 2492 mutex_unlock(&file_priv->fbs_lock); 2493 2494 return -EINVAL; 2495} 2496 2497/** 2498 * drm_mode_getfb - get FB info 2499 * @dev: drm device for the ioctl 2500 * @data: data pointer for the ioctl 2501 * @file_priv: drm file for the ioctl call 2502 * 2503 * Lookup the FB given its ID and return info about it. 2504 * 2505 * Called by the user via ioctl. 2506 * 2507 * RETURNS: 2508 * Zero on success, errno on failure. 2509 */ 2510int drm_mode_getfb(struct drm_device *dev, 2511 void *data, struct drm_file *file_priv) 2512{ 2513 struct drm_mode_fb_cmd *r = data; 2514 struct drm_framebuffer *fb; 2515 int ret; 2516 2517 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2518 return -EINVAL; 2519 2520 fb = drm_framebuffer_lookup(dev, r->fb_id); 2521 if (!fb) 2522 return -EINVAL; 2523 2524 r->height = fb->height; 2525 r->width = fb->width; 2526 r->depth = fb->depth; 2527 r->bpp = fb->bits_per_pixel; 2528 r->pitch = fb->pitches[0]; 2529 if (fb->funcs->create_handle) 2530 ret = fb->funcs->create_handle(fb, file_priv, &r->handle); 2531 else 2532 ret = -ENODEV; 2533 2534 drm_framebuffer_unreference(fb); 2535 2536 return ret; 2537} 2538 2539int drm_mode_dirtyfb_ioctl(struct drm_device *dev, 2540 void *data, struct drm_file *file_priv) 2541{ 2542 struct drm_clip_rect __user *clips_ptr; 2543 struct drm_clip_rect *clips = NULL; 2544 struct drm_mode_fb_dirty_cmd *r = data; 2545 struct drm_framebuffer *fb; 2546 unsigned flags; 2547 int num_clips; 2548 int ret; 2549 2550 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2551 return -EINVAL; 2552 2553 fb = drm_framebuffer_lookup(dev, r->fb_id); 2554 if (!fb) 2555 return -EINVAL; 2556 2557 num_clips = r->num_clips; 2558 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; 2559 2560 if (!num_clips != !clips_ptr) { 2561 ret = -EINVAL; 2562 goto out_err1; 2563 } 2564 2565 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; 2566 2567 /* If userspace annotates copy, clips must come in pairs */ 2568 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { 2569 ret = -EINVAL; 2570 goto out_err1; 2571 } 2572 2573 if (num_clips && clips_ptr) { 2574 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { 2575 ret = -EINVAL; 2576 goto out_err1; 2577 } 2578 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); 2579 if (!clips) { 2580 ret = -ENOMEM; 2581 goto out_err1; 2582 } 2583 2584 ret = copy_from_user(clips, clips_ptr, 2585 num_clips * sizeof(*clips)); 2586 if (ret) { 2587 ret = -EFAULT; 2588 goto out_err2; 2589 } 2590 } 2591 2592 if (fb->funcs->dirty) { 2593 drm_modeset_lock_all(dev); 2594 ret = fb->funcs->dirty(fb, file_priv, flags, r->color, 2595 clips, num_clips); 2596 drm_modeset_unlock_all(dev); 2597 } else { 2598 ret = -ENOSYS; 2599 } 2600 2601out_err2: 2602 kfree(clips); 2603out_err1: 2604 drm_framebuffer_unreference(fb); 2605 2606 return ret; 2607} 2608 2609 2610/** 2611 * drm_fb_release - remove and free the FBs on this file 2612 * @priv: drm file for the ioctl 2613 * 2614 * Destroy all the FBs associated with @filp. 2615 * 2616 * Called by the user via ioctl. 2617 * 2618 * RETURNS: 2619 * Zero on success, errno on failure. 2620 */ 2621void drm_fb_release(struct drm_file *priv) 2622{ 2623 struct drm_device *dev = priv->minor->dev; 2624 struct drm_framebuffer *fb, *tfb; 2625 2626 mutex_lock(&priv->fbs_lock); 2627 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { 2628 2629 mutex_lock(&dev->mode_config.fb_lock); 2630 /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ 2631 __drm_framebuffer_unregister(dev, fb); 2632 mutex_unlock(&dev->mode_config.fb_lock); 2633 2634 list_del_init(&fb->filp_head); 2635 2636 /* This will also drop the fpriv->fbs reference. */ 2637 drm_framebuffer_remove(fb); 2638 } 2639 mutex_unlock(&priv->fbs_lock); 2640} 2641 2642struct drm_property *drm_property_create(struct drm_device *dev, int flags, 2643 const char *name, int num_values) 2644{ 2645 struct drm_property *property = NULL; 2646 int ret; 2647 2648 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); 2649 if (!property) 2650 return NULL; 2651 2652 if (num_values) { 2653 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); 2654 if (!property->values) 2655 goto fail; 2656 } 2657 2658 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); 2659 if (ret) 2660 goto fail; 2661 2662 property->flags = flags; 2663 property->num_values = num_values; 2664 INIT_LIST_HEAD(&property->enum_blob_list); 2665 2666 if (name) { 2667 strncpy(property->name, name, DRM_PROP_NAME_LEN); 2668 property->name[DRM_PROP_NAME_LEN-1] = '\0'; 2669 } 2670 2671 list_add_tail(&property->head, &dev->mode_config.property_list); 2672 return property; 2673fail: 2674 kfree(property->values); 2675 kfree(property); 2676 return NULL; 2677} 2678EXPORT_SYMBOL(drm_property_create); 2679 2680struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, 2681 const char *name, 2682 const struct drm_prop_enum_list *props, 2683 int num_values) 2684{ 2685 struct drm_property *property; 2686 int i, ret; 2687 2688 flags |= DRM_MODE_PROP_ENUM; 2689 2690 property = drm_property_create(dev, flags, name, num_values); 2691 if (!property) 2692 return NULL; 2693 2694 for (i = 0; i < num_values; i++) { 2695 ret = drm_property_add_enum(property, i, 2696 props[i].type, 2697 props[i].name); 2698 if (ret) { 2699 drm_property_destroy(dev, property); 2700 return NULL; 2701 } 2702 } 2703 2704 return property; 2705} 2706EXPORT_SYMBOL(drm_property_create_enum); 2707 2708struct drm_property *drm_property_create_bitmask(struct drm_device *dev, 2709 int flags, const char *name, 2710 const struct drm_prop_enum_list *props, 2711 int num_values) 2712{ 2713 struct drm_property *property; 2714 int i, ret; 2715 2716 flags |= DRM_MODE_PROP_BITMASK; 2717 2718 property = drm_property_create(dev, flags, name, num_values); 2719 if (!property) 2720 return NULL; 2721 2722 for (i = 0; i < num_values; i++) { 2723 ret = drm_property_add_enum(property, i, 2724 props[i].type, 2725 props[i].name); 2726 if (ret) { 2727 drm_property_destroy(dev, property); 2728 return NULL; 2729 } 2730 } 2731 2732 return property; 2733} 2734EXPORT_SYMBOL(drm_property_create_bitmask); 2735 2736struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, 2737 const char *name, 2738 uint64_t min, uint64_t max) 2739{ 2740 struct drm_property *property; 2741 2742 flags |= DRM_MODE_PROP_RANGE; 2743 2744 property = drm_property_create(dev, flags, name, 2); 2745 if (!property) 2746 return NULL; 2747 2748 property->values[0] = min; 2749 property->values[1] = max; 2750 2751 return property; 2752} 2753EXPORT_SYMBOL(drm_property_create_range); 2754 2755int drm_property_add_enum(struct drm_property *property, int index, 2756 uint64_t value, const char *name) 2757{ 2758 struct drm_property_enum *prop_enum; 2759 2760 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK))) 2761 return -EINVAL; 2762 2763 /* 2764 * Bitmask enum properties have the additional constraint of values 2765 * from 0 to 63 2766 */ 2767 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63)) 2768 return -EINVAL; 2769 2770 if (!list_empty(&property->enum_blob_list)) { 2771 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 2772 if (prop_enum->value == value) { 2773 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2774 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2775 return 0; 2776 } 2777 } 2778 } 2779 2780 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); 2781 if (!prop_enum) 2782 return -ENOMEM; 2783 2784 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2785 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2786 prop_enum->value = value; 2787 2788 property->values[index] = value; 2789 list_add_tail(&prop_enum->head, &property->enum_blob_list); 2790 return 0; 2791} 2792EXPORT_SYMBOL(drm_property_add_enum); 2793 2794void drm_property_destroy(struct drm_device *dev, struct drm_property *property) 2795{ 2796 struct drm_property_enum *prop_enum, *pt; 2797 2798 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { 2799 list_del(&prop_enum->head); 2800 kfree(prop_enum); 2801 } 2802 2803 if (property->num_values) 2804 kfree(property->values); 2805 drm_mode_object_put(dev, &property->base); 2806 list_del(&property->head); 2807 kfree(property); 2808} 2809EXPORT_SYMBOL(drm_property_destroy); 2810 2811void drm_object_attach_property(struct drm_mode_object *obj, 2812 struct drm_property *property, 2813 uint64_t init_val) 2814{ 2815 int count = obj->properties->count; 2816 2817 if (count == DRM_OBJECT_MAX_PROPERTY) { 2818 WARN(1, "Failed to attach object property (type: 0x%x). Please " 2819 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time " 2820 "you see this message on the same object type.\n", 2821 obj->type); 2822 return; 2823 } 2824 2825 obj->properties->ids[count] = property->base.id; 2826 obj->properties->values[count] = init_val; 2827 obj->properties->count++; 2828} 2829EXPORT_SYMBOL(drm_object_attach_property); 2830 2831int drm_object_property_set_value(struct drm_mode_object *obj, 2832 struct drm_property *property, uint64_t val) 2833{ 2834 int i; 2835 2836 for (i = 0; i < obj->properties->count; i++) { 2837 if (obj->properties->ids[i] == property->base.id) { 2838 obj->properties->values[i] = val; 2839 return 0; 2840 } 2841 } 2842 2843 return -EINVAL; 2844} 2845EXPORT_SYMBOL(drm_object_property_set_value); 2846 2847int drm_object_property_get_value(struct drm_mode_object *obj, 2848 struct drm_property *property, uint64_t *val) 2849{ 2850 int i; 2851 2852 for (i = 0; i < obj->properties->count; i++) { 2853 if (obj->properties->ids[i] == property->base.id) { 2854 *val = obj->properties->values[i]; 2855 return 0; 2856 } 2857 } 2858 2859 return -EINVAL; 2860} 2861EXPORT_SYMBOL(drm_object_property_get_value); 2862 2863int drm_mode_getproperty_ioctl(struct drm_device *dev, 2864 void *data, struct drm_file *file_priv) 2865{ 2866 struct drm_mode_object *obj; 2867 struct drm_mode_get_property *out_resp = data; 2868 struct drm_property *property; 2869 int enum_count = 0; 2870 int blob_count = 0; 2871 int value_count = 0; 2872 int ret = 0, i; 2873 int copied; 2874 struct drm_property_enum *prop_enum; 2875 struct drm_mode_property_enum __user *enum_ptr; 2876 struct drm_property_blob *prop_blob; 2877 uint32_t __user *blob_id_ptr; 2878 uint64_t __user *values_ptr; 2879 uint32_t __user *blob_length_ptr; 2880 2881 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2882 return -EINVAL; 2883 2884 drm_modeset_lock_all(dev); 2885 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); 2886 if (!obj) { 2887 ret = -EINVAL; 2888 goto done; 2889 } 2890 property = obj_to_property(obj); 2891 2892 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 2893 list_for_each_entry(prop_enum, &property->enum_blob_list, head) 2894 enum_count++; 2895 } else if (property->flags & DRM_MODE_PROP_BLOB) { 2896 list_for_each_entry(prop_blob, &property->enum_blob_list, head) 2897 blob_count++; 2898 } 2899 2900 value_count = property->num_values; 2901 2902 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); 2903 out_resp->name[DRM_PROP_NAME_LEN-1] = 0; 2904 out_resp->flags = property->flags; 2905 2906 if ((out_resp->count_values >= value_count) && value_count) { 2907 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; 2908 for (i = 0; i < value_count; i++) { 2909 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { 2910 ret = -EFAULT; 2911 goto done; 2912 } 2913 } 2914 } 2915 out_resp->count_values = value_count; 2916 2917 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 2918 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { 2919 copied = 0; 2920 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; 2921 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 2922 2923 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { 2924 ret = -EFAULT; 2925 goto done; 2926 } 2927 2928 if (copy_to_user(&enum_ptr[copied].name, 2929 &prop_enum->name, DRM_PROP_NAME_LEN)) { 2930 ret = -EFAULT; 2931 goto done; 2932 } 2933 copied++; 2934 } 2935 } 2936 out_resp->count_enum_blobs = enum_count; 2937 } 2938 2939 if (property->flags & DRM_MODE_PROP_BLOB) { 2940 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { 2941 copied = 0; 2942 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr; 2943 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr; 2944 2945 list_for_each_entry(prop_blob, &property->enum_blob_list, head) { 2946 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { 2947 ret = -EFAULT; 2948 goto done; 2949 } 2950 2951 if (put_user(prop_blob->length, blob_length_ptr + copied)) { 2952 ret = -EFAULT; 2953 goto done; 2954 } 2955 2956 copied++; 2957 } 2958 } 2959 out_resp->count_enum_blobs = blob_count; 2960 } 2961done: 2962 drm_modeset_unlock_all(dev); 2963 return ret; 2964} 2965 2966static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, 2967 void *data) 2968{ 2969 struct drm_property_blob *blob; 2970 int ret; 2971 2972 if (!length || !data) 2973 return NULL; 2974 2975 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); 2976 if (!blob) 2977 return NULL; 2978 2979 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); 2980 if (ret) { 2981 kfree(blob); 2982 return NULL; 2983 } 2984 2985 blob->length = length; 2986 2987 memcpy(blob->data, data, length); 2988 2989 list_add_tail(&blob->head, &dev->mode_config.property_blob_list); 2990 return blob; 2991} 2992 2993static void drm_property_destroy_blob(struct drm_device *dev, 2994 struct drm_property_blob *blob) 2995{ 2996 drm_mode_object_put(dev, &blob->base); 2997 list_del(&blob->head); 2998 kfree(blob); 2999} 3000 3001int drm_mode_getblob_ioctl(struct drm_device *dev, 3002 void *data, struct drm_file *file_priv) 3003{ 3004 struct drm_mode_object *obj; 3005 struct drm_mode_get_blob *out_resp = data; 3006 struct drm_property_blob *blob; 3007 int ret = 0; 3008 void __user *blob_ptr; 3009 3010 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3011 return -EINVAL; 3012 3013 drm_modeset_lock_all(dev); 3014 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); 3015 if (!obj) { 3016 ret = -EINVAL; 3017 goto done; 3018 } 3019 blob = obj_to_blob(obj); 3020 3021 if (out_resp->length == blob->length) { 3022 blob_ptr = (void __user *)(unsigned long)out_resp->data; 3023 if (copy_to_user(blob_ptr, blob->data, blob->length)){ 3024 ret = -EFAULT; 3025 goto done; 3026 } 3027 } 3028 out_resp->length = blob->length; 3029 3030done: 3031 drm_modeset_unlock_all(dev); 3032 return ret; 3033} 3034 3035int drm_mode_connector_update_edid_property(struct drm_connector *connector, 3036 struct edid *edid) 3037{ 3038 struct drm_device *dev = connector->dev; 3039 int ret, size; 3040 3041 if (connector->edid_blob_ptr) 3042 drm_property_destroy_blob(dev, connector->edid_blob_ptr); 3043 3044 /* Delete edid, when there is none. */ 3045 if (!edid) { 3046 connector->edid_blob_ptr = NULL; 3047 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0); 3048 return ret; 3049 } 3050 3051 size = EDID_LENGTH * (1 + edid->extensions); 3052 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 3053 size, edid); 3054 if (!connector->edid_blob_ptr) 3055 return -EINVAL; 3056 3057 ret = drm_object_property_set_value(&connector->base, 3058 dev->mode_config.edid_property, 3059 connector->edid_blob_ptr->base.id); 3060 3061 return ret; 3062} 3063EXPORT_SYMBOL(drm_mode_connector_update_edid_property); 3064 3065static bool drm_property_change_is_valid(struct drm_property *property, 3066 uint64_t value) 3067{ 3068 if (property->flags & DRM_MODE_PROP_IMMUTABLE) 3069 return false; 3070 if (property->flags & DRM_MODE_PROP_RANGE) { 3071 if (value < property->values[0] || value > property->values[1]) 3072 return false; 3073 return true; 3074 } else if (property->flags & DRM_MODE_PROP_BITMASK) { 3075 int i; 3076 uint64_t valid_mask = 0; 3077 for (i = 0; i < property->num_values; i++) 3078 valid_mask |= (1ULL << property->values[i]); 3079 return !(value & ~valid_mask); 3080 } else if (property->flags & DRM_MODE_PROP_BLOB) { 3081 /* Only the driver knows */ 3082 return true; 3083 } else { 3084 int i; 3085 for (i = 0; i < property->num_values; i++) 3086 if (property->values[i] == value) 3087 return true; 3088 return false; 3089 } 3090} 3091 3092int drm_mode_connector_property_set_ioctl(struct drm_device *dev, 3093 void *data, struct drm_file *file_priv) 3094{ 3095 struct drm_mode_connector_set_property *conn_set_prop = data; 3096 struct drm_mode_obj_set_property obj_set_prop = { 3097 .value = conn_set_prop->value, 3098 .prop_id = conn_set_prop->prop_id, 3099 .obj_id = conn_set_prop->connector_id, 3100 .obj_type = DRM_MODE_OBJECT_CONNECTOR 3101 }; 3102 3103 /* It does all the locking and checking we need */ 3104 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); 3105} 3106 3107static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, 3108 struct drm_property *property, 3109 uint64_t value) 3110{ 3111 int ret = -EINVAL; 3112 struct drm_connector *connector = obj_to_connector(obj); 3113 3114 /* Do DPMS ourselves */ 3115 if (property == connector->dev->mode_config.dpms_property) { 3116 if (connector->funcs->dpms) 3117 (*connector->funcs->dpms)(connector, (int)value); 3118 ret = 0; 3119 } else if (connector->funcs->set_property) 3120 ret = connector->funcs->set_property(connector, property, value); 3121 3122 /* store the property value if successful */ 3123 if (!ret) 3124 drm_object_property_set_value(&connector->base, property, value); 3125 return ret; 3126} 3127 3128static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, 3129 struct drm_property *property, 3130 uint64_t value) 3131{ 3132 int ret = -EINVAL; 3133 struct drm_crtc *crtc = obj_to_crtc(obj); 3134 3135 if (crtc->funcs->set_property) 3136 ret = crtc->funcs->set_property(crtc, property, value); 3137 if (!ret) 3138 drm_object_property_set_value(obj, property, value); 3139 3140 return ret; 3141} 3142 3143static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj, 3144 struct drm_property *property, 3145 uint64_t value) 3146{ 3147 int ret = -EINVAL; 3148 struct drm_plane *plane = obj_to_plane(obj); 3149 3150 if (plane->funcs->set_property) 3151 ret = plane->funcs->set_property(plane, property, value); 3152 if (!ret) 3153 drm_object_property_set_value(obj, property, value); 3154 3155 return ret; 3156} 3157 3158int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, 3159 struct drm_file *file_priv) 3160{ 3161 struct drm_mode_obj_get_properties *arg = data; 3162 struct drm_mode_object *obj; 3163 int ret = 0; 3164 int i; 3165 int copied = 0; 3166 int props_count = 0; 3167 uint32_t __user *props_ptr; 3168 uint64_t __user *prop_values_ptr; 3169 3170 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3171 return -EINVAL; 3172 3173 drm_modeset_lock_all(dev); 3174 3175 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3176 if (!obj) { 3177 ret = -EINVAL; 3178 goto out; 3179 } 3180 if (!obj->properties) { 3181 ret = -EINVAL; 3182 goto out; 3183 } 3184 3185 props_count = obj->properties->count; 3186 3187 /* This ioctl is called twice, once to determine how much space is 3188 * needed, and the 2nd time to fill it. */ 3189 if ((arg->count_props >= props_count) && props_count) { 3190 copied = 0; 3191 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); 3192 prop_values_ptr = (uint64_t __user *)(unsigned long) 3193 (arg->prop_values_ptr); 3194 for (i = 0; i < props_count; i++) { 3195 if (put_user(obj->properties->ids[i], 3196 props_ptr + copied)) { 3197 ret = -EFAULT; 3198 goto out; 3199 } 3200 if (put_user(obj->properties->values[i], 3201 prop_values_ptr + copied)) { 3202 ret = -EFAULT; 3203 goto out; 3204 } 3205 copied++; 3206 } 3207 } 3208 arg->count_props = props_count; 3209out: 3210 drm_modeset_unlock_all(dev); 3211 return ret; 3212} 3213 3214int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, 3215 struct drm_file *file_priv) 3216{ 3217 struct drm_mode_obj_set_property *arg = data; 3218 struct drm_mode_object *arg_obj; 3219 struct drm_mode_object *prop_obj; 3220 struct drm_property *property; 3221 int ret = -EINVAL; 3222 int i; 3223 3224 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3225 return -EINVAL; 3226 3227 drm_modeset_lock_all(dev); 3228 3229 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3230 if (!arg_obj) 3231 goto out; 3232 if (!arg_obj->properties) 3233 goto out; 3234 3235 for (i = 0; i < arg_obj->properties->count; i++) 3236 if (arg_obj->properties->ids[i] == arg->prop_id) 3237 break; 3238 3239 if (i == arg_obj->properties->count) 3240 goto out; 3241 3242 prop_obj = drm_mode_object_find(dev, arg->prop_id, 3243 DRM_MODE_OBJECT_PROPERTY); 3244 if (!prop_obj) 3245 goto out; 3246 property = obj_to_property(prop_obj); 3247 3248 if (!drm_property_change_is_valid(property, arg->value)) 3249 goto out; 3250 3251 switch (arg_obj->type) { 3252 case DRM_MODE_OBJECT_CONNECTOR: 3253 ret = drm_mode_connector_set_obj_prop(arg_obj, property, 3254 arg->value); 3255 break; 3256 case DRM_MODE_OBJECT_CRTC: 3257 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value); 3258 break; 3259 case DRM_MODE_OBJECT_PLANE: 3260 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value); 3261 break; 3262 } 3263 3264out: 3265 drm_modeset_unlock_all(dev); 3266 return ret; 3267} 3268 3269int drm_mode_connector_attach_encoder(struct drm_connector *connector, 3270 struct drm_encoder *encoder) 3271{ 3272 int i; 3273 3274 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3275 if (connector->encoder_ids[i] == 0) { 3276 connector->encoder_ids[i] = encoder->base.id; 3277 return 0; 3278 } 3279 } 3280 return -ENOMEM; 3281} 3282EXPORT_SYMBOL(drm_mode_connector_attach_encoder); 3283 3284void drm_mode_connector_detach_encoder(struct drm_connector *connector, 3285 struct drm_encoder *encoder) 3286{ 3287 int i; 3288 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3289 if (connector->encoder_ids[i] == encoder->base.id) { 3290 connector->encoder_ids[i] = 0; 3291 if (connector->encoder == encoder) 3292 connector->encoder = NULL; 3293 break; 3294 } 3295 } 3296} 3297EXPORT_SYMBOL(drm_mode_connector_detach_encoder); 3298 3299int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, 3300 int gamma_size) 3301{ 3302 crtc->gamma_size = gamma_size; 3303 3304 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); 3305 if (!crtc->gamma_store) { 3306 crtc->gamma_size = 0; 3307 return -ENOMEM; 3308 } 3309 3310 return 0; 3311} 3312EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); 3313 3314int drm_mode_gamma_set_ioctl(struct drm_device *dev, 3315 void *data, struct drm_file *file_priv) 3316{ 3317 struct drm_mode_crtc_lut *crtc_lut = data; 3318 struct drm_mode_object *obj; 3319 struct drm_crtc *crtc; 3320 void *r_base, *g_base, *b_base; 3321 int size; 3322 int ret = 0; 3323 3324 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3325 return -EINVAL; 3326 3327 drm_modeset_lock_all(dev); 3328 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3329 if (!obj) { 3330 ret = -EINVAL; 3331 goto out; 3332 } 3333 crtc = obj_to_crtc(obj); 3334 3335 if (crtc->funcs->gamma_set == NULL) { 3336 ret = -ENOSYS; 3337 goto out; 3338 } 3339 3340 /* memcpy into gamma store */ 3341 if (crtc_lut->gamma_size != crtc->gamma_size) { 3342 ret = -EINVAL; 3343 goto out; 3344 } 3345 3346 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3347 r_base = crtc->gamma_store; 3348 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { 3349 ret = -EFAULT; 3350 goto out; 3351 } 3352 3353 g_base = r_base + size; 3354 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { 3355 ret = -EFAULT; 3356 goto out; 3357 } 3358 3359 b_base = g_base + size; 3360 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { 3361 ret = -EFAULT; 3362 goto out; 3363 } 3364 3365 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); 3366 3367out: 3368 drm_modeset_unlock_all(dev); 3369 return ret; 3370 3371} 3372 3373int drm_mode_gamma_get_ioctl(struct drm_device *dev, 3374 void *data, struct drm_file *file_priv) 3375{ 3376 struct drm_mode_crtc_lut *crtc_lut = data; 3377 struct drm_mode_object *obj; 3378 struct drm_crtc *crtc; 3379 void *r_base, *g_base, *b_base; 3380 int size; 3381 int ret = 0; 3382 3383 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3384 return -EINVAL; 3385 3386 drm_modeset_lock_all(dev); 3387 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3388 if (!obj) { 3389 ret = -EINVAL; 3390 goto out; 3391 } 3392 crtc = obj_to_crtc(obj); 3393 3394 /* memcpy into gamma store */ 3395 if (crtc_lut->gamma_size != crtc->gamma_size) { 3396 ret = -EINVAL; 3397 goto out; 3398 } 3399 3400 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3401 r_base = crtc->gamma_store; 3402 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { 3403 ret = -EFAULT; 3404 goto out; 3405 } 3406 3407 g_base = r_base + size; 3408 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { 3409 ret = -EFAULT; 3410 goto out; 3411 } 3412 3413 b_base = g_base + size; 3414 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { 3415 ret = -EFAULT; 3416 goto out; 3417 } 3418out: 3419 drm_modeset_unlock_all(dev); 3420 return ret; 3421} 3422 3423int drm_mode_page_flip_ioctl(struct drm_device *dev, 3424 void *data, struct drm_file *file_priv) 3425{ 3426 struct drm_mode_crtc_page_flip *page_flip = data; 3427 struct drm_mode_object *obj; 3428 struct drm_crtc *crtc; 3429 struct drm_framebuffer *fb = NULL, *old_fb = NULL; 3430 struct drm_pending_vblank_event *e = NULL; 3431 unsigned long flags; 3432 int hdisplay, vdisplay; 3433 int ret = -EINVAL; 3434 3435 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || 3436 page_flip->reserved != 0) 3437 return -EINVAL; 3438 3439 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC); 3440 if (!obj) 3441 return -EINVAL; 3442 crtc = obj_to_crtc(obj); 3443 3444 mutex_lock(&crtc->mutex); 3445 if (crtc->fb == NULL) { 3446 /* The framebuffer is currently unbound, presumably 3447 * due to a hotplug event, that userspace has not 3448 * yet discovered. 3449 */ 3450 ret = -EBUSY; 3451 goto out; 3452 } 3453 3454 if (crtc->funcs->page_flip == NULL) 3455 goto out; 3456 3457 fb = drm_framebuffer_lookup(dev, page_flip->fb_id); 3458 if (!fb) 3459 goto out; 3460 3461 hdisplay = crtc->mode.hdisplay; 3462 vdisplay = crtc->mode.vdisplay; 3463 3464 if (crtc->invert_dimensions) 3465 swap(hdisplay, vdisplay); 3466 3467 if (hdisplay > fb->width || 3468 vdisplay > fb->height || 3469 crtc->x > fb->width - hdisplay || 3470 crtc->y > fb->height - vdisplay) { 3471 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", 3472 fb->width, fb->height, hdisplay, vdisplay, crtc->x, crtc->y, 3473 crtc->invert_dimensions ? " (inverted)" : ""); 3474 ret = -ENOSPC; 3475 goto out; 3476 } 3477 3478 if (crtc->fb->pixel_format != fb->pixel_format) { 3479 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); 3480 ret = -EINVAL; 3481 goto out; 3482 } 3483 3484 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3485 ret = -ENOMEM; 3486 spin_lock_irqsave(&dev->event_lock, flags); 3487 if (file_priv->event_space < sizeof e->event) { 3488 spin_unlock_irqrestore(&dev->event_lock, flags); 3489 goto out; 3490 } 3491 file_priv->event_space -= sizeof e->event; 3492 spin_unlock_irqrestore(&dev->event_lock, flags); 3493 3494 e = kzalloc(sizeof *e, GFP_KERNEL); 3495 if (e == NULL) { 3496 spin_lock_irqsave(&dev->event_lock, flags); 3497 file_priv->event_space += sizeof e->event; 3498 spin_unlock_irqrestore(&dev->event_lock, flags); 3499 goto out; 3500 } 3501 3502 e->event.base.type = DRM_EVENT_FLIP_COMPLETE; 3503 e->event.base.length = sizeof e->event; 3504 e->event.user_data = page_flip->user_data; 3505 e->base.event = &e->event.base; 3506 e->base.file_priv = file_priv; 3507 e->base.destroy = 3508 (void (*) (struct drm_pending_event *)) kfree; 3509 } 3510 3511 old_fb = crtc->fb; 3512 ret = crtc->funcs->page_flip(crtc, fb, e); 3513 if (ret) { 3514 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3515 spin_lock_irqsave(&dev->event_lock, flags); 3516 file_priv->event_space += sizeof e->event; 3517 spin_unlock_irqrestore(&dev->event_lock, flags); 3518 kfree(e); 3519 } 3520 /* Keep the old fb, don't unref it. */ 3521 old_fb = NULL; 3522 } else { 3523 /* 3524 * Warn if the driver hasn't properly updated the crtc->fb 3525 * field to reflect that the new framebuffer is now used. 3526 * Failing to do so will screw with the reference counting 3527 * on framebuffers. 3528 */ 3529 WARN_ON(crtc->fb != fb); 3530 /* Unref only the old framebuffer. */ 3531 fb = NULL; 3532 } 3533 3534out: 3535 if (fb) 3536 drm_framebuffer_unreference(fb); 3537 if (old_fb) 3538 drm_framebuffer_unreference(old_fb); 3539 mutex_unlock(&crtc->mutex); 3540 3541 return ret; 3542} 3543 3544void drm_mode_config_reset(struct drm_device *dev) 3545{ 3546 struct drm_crtc *crtc; 3547 struct drm_encoder *encoder; 3548 struct drm_connector *connector; 3549 3550 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 3551 if (crtc->funcs->reset) 3552 crtc->funcs->reset(crtc); 3553 3554 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 3555 if (encoder->funcs->reset) 3556 encoder->funcs->reset(encoder); 3557 3558 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 3559 connector->status = connector_status_unknown; 3560 3561 if (connector->funcs->reset) 3562 connector->funcs->reset(connector); 3563 } 3564} 3565EXPORT_SYMBOL(drm_mode_config_reset); 3566 3567int drm_mode_create_dumb_ioctl(struct drm_device *dev, 3568 void *data, struct drm_file *file_priv) 3569{ 3570 struct drm_mode_create_dumb *args = data; 3571 3572 if (!dev->driver->dumb_create) 3573 return -ENOSYS; 3574 return dev->driver->dumb_create(file_priv, dev, args); 3575} 3576 3577int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, 3578 void *data, struct drm_file *file_priv) 3579{ 3580 struct drm_mode_map_dumb *args = data; 3581 3582 /* call driver ioctl to get mmap offset */ 3583 if (!dev->driver->dumb_map_offset) 3584 return -ENOSYS; 3585 3586 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); 3587} 3588 3589int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, 3590 void *data, struct drm_file *file_priv) 3591{ 3592 struct drm_mode_destroy_dumb *args = data; 3593 3594 if (!dev->driver->dumb_destroy) 3595 return -ENOSYS; 3596 3597 return dev->driver->dumb_destroy(file_priv, dev, args->handle); 3598} 3599 3600/* 3601 * Just need to support RGB formats here for compat with code that doesn't 3602 * use pixel formats directly yet. 3603 */ 3604void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, 3605 int *bpp) 3606{ 3607 switch (format) { 3608 case DRM_FORMAT_C8: 3609 case DRM_FORMAT_RGB332: 3610 case DRM_FORMAT_BGR233: 3611 *depth = 8; 3612 *bpp = 8; 3613 break; 3614 case DRM_FORMAT_XRGB1555: 3615 case DRM_FORMAT_XBGR1555: 3616 case DRM_FORMAT_RGBX5551: 3617 case DRM_FORMAT_BGRX5551: 3618 case DRM_FORMAT_ARGB1555: 3619 case DRM_FORMAT_ABGR1555: 3620 case DRM_FORMAT_RGBA5551: 3621 case DRM_FORMAT_BGRA5551: 3622 *depth = 15; 3623 *bpp = 16; 3624 break; 3625 case DRM_FORMAT_RGB565: 3626 case DRM_FORMAT_BGR565: 3627 *depth = 16; 3628 *bpp = 16; 3629 break; 3630 case DRM_FORMAT_RGB888: 3631 case DRM_FORMAT_BGR888: 3632 *depth = 24; 3633 *bpp = 24; 3634 break; 3635 case DRM_FORMAT_XRGB8888: 3636 case DRM_FORMAT_XBGR8888: 3637 case DRM_FORMAT_RGBX8888: 3638 case DRM_FORMAT_BGRX8888: 3639 *depth = 24; 3640 *bpp = 32; 3641 break; 3642 case DRM_FORMAT_XRGB2101010: 3643 case DRM_FORMAT_XBGR2101010: 3644 case DRM_FORMAT_RGBX1010102: 3645 case DRM_FORMAT_BGRX1010102: 3646 case DRM_FORMAT_ARGB2101010: 3647 case DRM_FORMAT_ABGR2101010: 3648 case DRM_FORMAT_RGBA1010102: 3649 case DRM_FORMAT_BGRA1010102: 3650 *depth = 30; 3651 *bpp = 32; 3652 break; 3653 case DRM_FORMAT_ARGB8888: 3654 case DRM_FORMAT_ABGR8888: 3655 case DRM_FORMAT_RGBA8888: 3656 case DRM_FORMAT_BGRA8888: 3657 *depth = 32; 3658 *bpp = 32; 3659 break; 3660 default: 3661 DRM_DEBUG_KMS("unsupported pixel format\n"); 3662 *depth = 0; 3663 *bpp = 0; 3664 break; 3665 } 3666} 3667EXPORT_SYMBOL(drm_fb_get_bpp_depth); 3668 3669/** 3670 * drm_format_num_planes - get the number of planes for format 3671 * @format: pixel format (DRM_FORMAT_*) 3672 * 3673 * RETURNS: 3674 * The number of planes used by the specified pixel format. 3675 */ 3676int drm_format_num_planes(uint32_t format) 3677{ 3678 switch (format) { 3679 case DRM_FORMAT_YUV410: 3680 case DRM_FORMAT_YVU410: 3681 case DRM_FORMAT_YUV411: 3682 case DRM_FORMAT_YVU411: 3683 case DRM_FORMAT_YUV420: 3684 case DRM_FORMAT_YVU420: 3685 case DRM_FORMAT_YUV422: 3686 case DRM_FORMAT_YVU422: 3687 case DRM_FORMAT_YUV444: 3688 case DRM_FORMAT_YVU444: 3689 return 3; 3690 case DRM_FORMAT_NV12: 3691 case DRM_FORMAT_NV21: 3692 case DRM_FORMAT_NV16: 3693 case DRM_FORMAT_NV61: 3694 case DRM_FORMAT_NV24: 3695 case DRM_FORMAT_NV42: 3696 return 2; 3697 default: 3698 return 1; 3699 } 3700} 3701EXPORT_SYMBOL(drm_format_num_planes); 3702 3703/** 3704 * drm_format_plane_cpp - determine the bytes per pixel value 3705 * @format: pixel format (DRM_FORMAT_*) 3706 * @plane: plane index 3707 * 3708 * RETURNS: 3709 * The bytes per pixel value for the specified plane. 3710 */ 3711int drm_format_plane_cpp(uint32_t format, int plane) 3712{ 3713 unsigned int depth; 3714 int bpp; 3715 3716 if (plane >= drm_format_num_planes(format)) 3717 return 0; 3718 3719 switch (format) { 3720 case DRM_FORMAT_YUYV: 3721 case DRM_FORMAT_YVYU: 3722 case DRM_FORMAT_UYVY: 3723 case DRM_FORMAT_VYUY: 3724 return 2; 3725 case DRM_FORMAT_NV12: 3726 case DRM_FORMAT_NV21: 3727 case DRM_FORMAT_NV16: 3728 case DRM_FORMAT_NV61: 3729 case DRM_FORMAT_NV24: 3730 case DRM_FORMAT_NV42: 3731 return plane ? 2 : 1; 3732 case DRM_FORMAT_YUV410: 3733 case DRM_FORMAT_YVU410: 3734 case DRM_FORMAT_YUV411: 3735 case DRM_FORMAT_YVU411: 3736 case DRM_FORMAT_YUV420: 3737 case DRM_FORMAT_YVU420: 3738 case DRM_FORMAT_YUV422: 3739 case DRM_FORMAT_YVU422: 3740 case DRM_FORMAT_YUV444: 3741 case DRM_FORMAT_YVU444: 3742 return 1; 3743 default: 3744 drm_fb_get_bpp_depth(format, &depth, &bpp); 3745 return bpp >> 3; 3746 } 3747} 3748EXPORT_SYMBOL(drm_format_plane_cpp); 3749 3750/** 3751 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor 3752 * @format: pixel format (DRM_FORMAT_*) 3753 * 3754 * RETURNS: 3755 * The horizontal chroma subsampling factor for the 3756 * specified pixel format. 3757 */ 3758int drm_format_horz_chroma_subsampling(uint32_t format) 3759{ 3760 switch (format) { 3761 case DRM_FORMAT_YUV411: 3762 case DRM_FORMAT_YVU411: 3763 case DRM_FORMAT_YUV410: 3764 case DRM_FORMAT_YVU410: 3765 return 4; 3766 case DRM_FORMAT_YUYV: 3767 case DRM_FORMAT_YVYU: 3768 case DRM_FORMAT_UYVY: 3769 case DRM_FORMAT_VYUY: 3770 case DRM_FORMAT_NV12: 3771 case DRM_FORMAT_NV21: 3772 case DRM_FORMAT_NV16: 3773 case DRM_FORMAT_NV61: 3774 case DRM_FORMAT_YUV422: 3775 case DRM_FORMAT_YVU422: 3776 case DRM_FORMAT_YUV420: 3777 case DRM_FORMAT_YVU420: 3778 return 2; 3779 default: 3780 return 1; 3781 } 3782} 3783EXPORT_SYMBOL(drm_format_horz_chroma_subsampling); 3784 3785/** 3786 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor 3787 * @format: pixel format (DRM_FORMAT_*) 3788 * 3789 * RETURNS: 3790 * The vertical chroma subsampling factor for the 3791 * specified pixel format. 3792 */ 3793int drm_format_vert_chroma_subsampling(uint32_t format) 3794{ 3795 switch (format) { 3796 case DRM_FORMAT_YUV410: 3797 case DRM_FORMAT_YVU410: 3798 return 4; 3799 case DRM_FORMAT_YUV420: 3800 case DRM_FORMAT_YVU420: 3801 case DRM_FORMAT_NV12: 3802 case DRM_FORMAT_NV21: 3803 return 2; 3804 default: 3805 return 1; 3806 } 3807} 3808EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); 3809 3810/** 3811 * drm_mode_config_init - initialize DRM mode_configuration structure 3812 * @dev: DRM device 3813 * 3814 * Initialize @dev's mode_config structure, used for tracking the graphics 3815 * configuration of @dev. 3816 * 3817 * Since this initializes the modeset locks, no locking is possible. Which is no 3818 * problem, since this should happen single threaded at init time. It is the 3819 * driver's problem to ensure this guarantee. 3820 * 3821 */ 3822void drm_mode_config_init(struct drm_device *dev) 3823{ 3824 mutex_init(&dev->mode_config.mutex); 3825 mutex_init(&dev->mode_config.idr_mutex); 3826 mutex_init(&dev->mode_config.fb_lock); 3827 INIT_LIST_HEAD(&dev->mode_config.fb_list); 3828 INIT_LIST_HEAD(&dev->mode_config.crtc_list); 3829 INIT_LIST_HEAD(&dev->mode_config.connector_list); 3830 INIT_LIST_HEAD(&dev->mode_config.encoder_list); 3831 INIT_LIST_HEAD(&dev->mode_config.property_list); 3832 INIT_LIST_HEAD(&dev->mode_config.property_blob_list); 3833 INIT_LIST_HEAD(&dev->mode_config.plane_list); 3834 idr_init(&dev->mode_config.crtc_idr); 3835 3836 drm_modeset_lock_all(dev); 3837 drm_mode_create_standard_connector_properties(dev); 3838 drm_modeset_unlock_all(dev); 3839 3840 /* Just to be sure */ 3841 dev->mode_config.num_fb = 0; 3842 dev->mode_config.num_connector = 0; 3843 dev->mode_config.num_crtc = 0; 3844 dev->mode_config.num_encoder = 0; 3845} 3846EXPORT_SYMBOL(drm_mode_config_init); 3847 3848/** 3849 * drm_mode_config_cleanup - free up DRM mode_config info 3850 * @dev: DRM device 3851 * 3852 * Free up all the connectors and CRTCs associated with this DRM device, then 3853 * free up the framebuffers and associated buffer objects. 3854 * 3855 * Note that since this /should/ happen single-threaded at driver/device 3856 * teardown time, no locking is required. It's the driver's job to ensure that 3857 * this guarantee actually holds true. 3858 * 3859 * FIXME: cleanup any dangling user buffer objects too 3860 */ 3861void drm_mode_config_cleanup(struct drm_device *dev) 3862{ 3863 struct drm_connector *connector, *ot; 3864 struct drm_crtc *crtc, *ct; 3865 struct drm_encoder *encoder, *enct; 3866 struct drm_framebuffer *fb, *fbt; 3867 struct drm_property *property, *pt; 3868 struct drm_property_blob *blob, *bt; 3869 struct drm_plane *plane, *plt; 3870 3871 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, 3872 head) { 3873 encoder->funcs->destroy(encoder); 3874 } 3875 3876 list_for_each_entry_safe(connector, ot, 3877 &dev->mode_config.connector_list, head) { 3878 connector->funcs->destroy(connector); 3879 } 3880 3881 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, 3882 head) { 3883 drm_property_destroy(dev, property); 3884 } 3885 3886 list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, 3887 head) { 3888 drm_property_destroy_blob(dev, blob); 3889 } 3890 3891 /* 3892 * Single-threaded teardown context, so it's not required to grab the 3893 * fb_lock to protect against concurrent fb_list access. Contrary, it 3894 * would actually deadlock with the drm_framebuffer_cleanup function. 3895 * 3896 * Also, if there are any framebuffers left, that's a driver leak now, 3897 * so politely WARN about this. 3898 */ 3899 WARN_ON(!list_empty(&dev->mode_config.fb_list)); 3900 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { 3901 drm_framebuffer_remove(fb); 3902 } 3903 3904 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, 3905 head) { 3906 plane->funcs->destroy(plane); 3907 } 3908 3909 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { 3910 crtc->funcs->destroy(crtc); 3911 } 3912 3913 idr_destroy(&dev->mode_config.crtc_idr); 3914} 3915EXPORT_SYMBOL(drm_mode_config_cleanup); 3916