drm_crtc.c revision 1.1
1 /* 2 * Copyright (c) 2006-2008 Intel Corporation 3 * Copyright (c) 2007 Dave Airlie <airlied (at) 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 (at) anholt.net> 29 * Dave Airlie <airlied (at) linux.ie> 30 * Jesse Barnes <jesse.barnes (at) intel.com> 31 */ 32 #include <linux/list.h> 33 #include <linux/slab.h> 34 #include <linux/export.h> 35 #include <drm/drmP.h> 36 #include <drm/drm_crtc.h> 37 #include <drm/drm_edid.h> 38 #include <drm/drm_fourcc.h> 39 40 /* Avoid boilerplate. I'm tired of typing. */ 41 #define DRM_ENUM_NAME_FN(fnname, list) \ 42 char *fnname(int val) \ 43 { \ 44 int i; \ 45 for (i = 0; i < ARRAY_SIZE(list); i++) { \ 46 if (list[i].type == val) \ 47 return list[i].name; \ 48 } \ 49 return "(unknown)"; \ 50 } 51 52 /* 53 * Global properties 54 */ 55 static struct drm_prop_enum_list drm_dpms_enum_list[] = 56 { { DRM_MODE_DPMS_ON, "On" }, 57 { DRM_MODE_DPMS_STANDBY, "Standby" }, 58 { DRM_MODE_DPMS_SUSPEND, "Suspend" }, 59 { DRM_MODE_DPMS_OFF, "Off" } 60 }; 61 62 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) 63 64 /* 65 * Optional properties 66 */ 67 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] = 68 { 69 { DRM_MODE_SCALE_NONE, "None" }, 70 { DRM_MODE_SCALE_FULLSCREEN, "Full" }, 71 { DRM_MODE_SCALE_CENTER, "Center" }, 72 { DRM_MODE_SCALE_ASPECT, "Full aspect" }, 73 }; 74 75 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] = 76 { 77 { DRM_MODE_DITHERING_OFF, "Off" }, 78 { DRM_MODE_DITHERING_ON, "On" }, 79 { DRM_MODE_DITHERING_AUTO, "Automatic" }, 80 }; 81 82 /* 83 * Non-global properties, but "required" for certain connectors. 84 */ 85 static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = 86 { 87 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ 88 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ 89 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ 90 }; 91 92 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) 93 94 static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = 95 { 96 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 97 { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ 98 { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ 99 }; 100 101 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, 102 drm_dvi_i_subconnector_enum_list) 103 104 static struct drm_prop_enum_list drm_tv_select_enum_list[] = 105 { 106 { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ 107 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 108 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 109 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 110 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 111 }; 112 113 DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) 114 115 static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = 116 { 117 { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ 118 { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ 119 { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ 120 { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ 121 { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ 122 }; 123 124 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, 125 drm_tv_subconnector_enum_list) 126 127 static struct drm_prop_enum_list drm_dirty_info_enum_list[] = { 128 { DRM_MODE_DIRTY_OFF, "Off" }, 129 { DRM_MODE_DIRTY_ON, "On" }, 130 { DRM_MODE_DIRTY_ANNOTATE, "Annotate" }, 131 }; 132 133 DRM_ENUM_NAME_FN(drm_get_dirty_info_name, 134 drm_dirty_info_enum_list) 135 136 struct drm_conn_prop_enum_list { 137 int type; 138 char *name; 139 int count; 140 }; 141 142 /* 143 * Connector and encoder types. 144 */ 145 static struct drm_conn_prop_enum_list drm_connector_enum_list[] = 146 { { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 }, 147 { DRM_MODE_CONNECTOR_VGA, "VGA", 0 }, 148 { DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 }, 149 { DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 }, 150 { DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 }, 151 { DRM_MODE_CONNECTOR_Composite, "Composite", 0 }, 152 { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 }, 153 { DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 }, 154 { DRM_MODE_CONNECTOR_Component, "Component", 0 }, 155 { DRM_MODE_CONNECTOR_9PinDIN, "DIN", 0 }, 156 { DRM_MODE_CONNECTOR_DisplayPort, "DP", 0 }, 157 { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A", 0 }, 158 { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B", 0 }, 159 { DRM_MODE_CONNECTOR_TV, "TV", 0 }, 160 { DRM_MODE_CONNECTOR_eDP, "eDP", 0 }, 161 { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual", 0}, 162 }; 163 164 static struct drm_prop_enum_list drm_encoder_enum_list[] = 165 { { DRM_MODE_ENCODER_NONE, "None" }, 166 { DRM_MODE_ENCODER_DAC, "DAC" }, 167 { DRM_MODE_ENCODER_TMDS, "TMDS" }, 168 { DRM_MODE_ENCODER_LVDS, "LVDS" }, 169 { DRM_MODE_ENCODER_TVDAC, "TV" }, 170 { DRM_MODE_ENCODER_VIRTUAL, "Virtual" }, 171 }; 172 173 char *drm_get_encoder_name(struct drm_encoder *encoder) 174 { 175 static char buf[32]; 176 177 snprintf(buf, 32, "%s-%d", 178 drm_encoder_enum_list[encoder->encoder_type].name, 179 encoder->base.id); 180 return buf; 181 } 182 EXPORT_SYMBOL(drm_get_encoder_name); 183 184 char *drm_get_connector_name(struct drm_connector *connector) 185 { 186 static char buf[32]; 187 188 snprintf(buf, 32, "%s-%d", 189 drm_connector_enum_list[connector->connector_type].name, 190 connector->connector_type_id); 191 return buf; 192 } 193 EXPORT_SYMBOL(drm_get_connector_name); 194 195 char *drm_get_connector_status_name(enum drm_connector_status status) 196 { 197 if (status == connector_status_connected) 198 return "connected"; 199 else if (status == connector_status_disconnected) 200 return "disconnected"; 201 else 202 return "unknown"; 203 } 204 205 /** 206 * drm_mode_object_get - allocate a new identifier 207 * @dev: DRM device 208 * @ptr: object pointer, used to generate unique ID 209 * @type: object type 210 * 211 * LOCKING: 212 * 213 * Create a unique identifier based on @ptr in @dev's identifier space. Used 214 * for tracking modes, CRTCs and connectors. 215 * 216 * RETURNS: 217 * New unique (relative to other objects in @dev) integer identifier for the 218 * object. 219 */ 220 static int drm_mode_object_get(struct drm_device *dev, 221 struct drm_mode_object *obj, uint32_t obj_type) 222 { 223 int new_id = 0; 224 int ret; 225 226 again: 227 if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) { 228 DRM_ERROR("Ran out memory getting a mode number\n"); 229 return -ENOMEM; 230 } 231 232 mutex_lock(&dev->mode_config.idr_mutex); 233 ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id); 234 mutex_unlock(&dev->mode_config.idr_mutex); 235 if (ret == -EAGAIN) 236 goto again; 237 else if (ret) 238 return ret; 239 240 obj->id = new_id; 241 obj->type = obj_type; 242 return 0; 243 } 244 245 /** 246 * drm_mode_object_put - free an identifer 247 * @dev: DRM device 248 * @id: ID to free 249 * 250 * LOCKING: 251 * Caller must hold DRM mode_config lock. 252 * 253 * Free @id from @dev's unique identifier pool. 254 */ 255 static void drm_mode_object_put(struct drm_device *dev, 256 struct drm_mode_object *object) 257 { 258 mutex_lock(&dev->mode_config.idr_mutex); 259 idr_remove(&dev->mode_config.crtc_idr, object->id); 260 mutex_unlock(&dev->mode_config.idr_mutex); 261 } 262 263 struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, 264 uint32_t id, uint32_t type) 265 { 266 struct drm_mode_object *obj = NULL; 267 268 mutex_lock(&dev->mode_config.idr_mutex); 269 obj = idr_find(&dev->mode_config.crtc_idr, id); 270 if (!obj || (obj->type != type) || (obj->id != id)) 271 obj = NULL; 272 mutex_unlock(&dev->mode_config.idr_mutex); 273 274 return obj; 275 } 276 EXPORT_SYMBOL(drm_mode_object_find); 277 278 /** 279 * drm_framebuffer_init - initialize a framebuffer 280 * @dev: DRM device 281 * 282 * LOCKING: 283 * Caller must hold mode config lock. 284 * 285 * Allocates an ID for the framebuffer's parent mode object, sets its mode 286 * functions & device file and adds it to the master fd list. 287 * 288 * RETURNS: 289 * Zero on success, error code on failure. 290 */ 291 int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, 292 const struct drm_framebuffer_funcs *funcs) 293 { 294 int ret; 295 296 kref_init(&fb->refcount); 297 298 ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB); 299 if (ret) 300 return ret; 301 302 fb->dev = dev; 303 fb->funcs = funcs; 304 dev->mode_config.num_fb++; 305 list_add(&fb->head, &dev->mode_config.fb_list); 306 307 return 0; 308 } 309 EXPORT_SYMBOL(drm_framebuffer_init); 310 311 static void drm_framebuffer_free(struct kref *kref) 312 { 313 struct drm_framebuffer *fb = 314 container_of(kref, struct drm_framebuffer, refcount); 315 fb->funcs->destroy(fb); 316 } 317 318 /** 319 * drm_framebuffer_unreference - unref a framebuffer 320 * 321 * LOCKING: 322 * Caller must hold mode config lock. 323 */ 324 void drm_framebuffer_unreference(struct drm_framebuffer *fb) 325 { 326 struct drm_device *dev = fb->dev; 327 DRM_DEBUG("FB ID: %d\n", fb->base.id); 328 WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); 329 kref_put(&fb->refcount, drm_framebuffer_free); 330 } 331 EXPORT_SYMBOL(drm_framebuffer_unreference); 332 333 /** 334 * drm_framebuffer_reference - incr the fb refcnt 335 */ 336 void drm_framebuffer_reference(struct drm_framebuffer *fb) 337 { 338 DRM_DEBUG("FB ID: %d\n", fb->base.id); 339 kref_get(&fb->refcount); 340 } 341 EXPORT_SYMBOL(drm_framebuffer_reference); 342 343 /** 344 * drm_framebuffer_cleanup - remove a framebuffer object 345 * @fb: framebuffer to remove 346 * 347 * LOCKING: 348 * Caller must hold mode config lock. 349 * 350 * Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes 351 * it, setting it to NULL. 352 */ 353 void drm_framebuffer_cleanup(struct drm_framebuffer *fb) 354 { 355 struct drm_device *dev = fb->dev; 356 /* 357 * This could be moved to drm_framebuffer_remove(), but for 358 * debugging is nice to keep around the list of fb's that are 359 * no longer associated w/ a drm_file but are not unreferenced 360 * yet. (i915 and omapdrm have debugfs files which will show 361 * this.) 362 */ 363 drm_mode_object_put(dev, &fb->base); 364 list_del(&fb->head); 365 dev->mode_config.num_fb--; 366 } 367 EXPORT_SYMBOL(drm_framebuffer_cleanup); 368 369 /** 370 * drm_framebuffer_remove - remove and unreference a framebuffer object 371 * @fb: framebuffer to remove 372 * 373 * LOCKING: 374 * Caller must hold mode config lock. 375 * 376 * Scans all the CRTCs and planes in @dev's mode_config. If they're 377 * using @fb, removes it, setting it to NULL. 378 */ 379 void drm_framebuffer_remove(struct drm_framebuffer *fb) 380 { 381 struct drm_device *dev = fb->dev; 382 struct drm_crtc *crtc; 383 struct drm_plane *plane; 384 struct drm_mode_set set; 385 int ret; 386 387 /* remove from any CRTC */ 388 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 389 if (crtc->fb == fb) { 390 /* should turn off the crtc */ 391 memset(&set, 0, sizeof(struct drm_mode_set)); 392 set.crtc = crtc; 393 set.fb = NULL; 394 ret = crtc->funcs->set_config(&set); 395 if (ret) 396 DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc); 397 } 398 } 399 400 list_for_each_entry(plane, &dev->mode_config.plane_list, head) { 401 if (plane->fb == fb) { 402 /* should turn off the crtc */ 403 ret = plane->funcs->disable_plane(plane); 404 if (ret) 405 DRM_ERROR("failed to disable plane with busy fb\n"); 406 /* disconnect the plane from the fb and crtc: */ 407 plane->fb = NULL; 408 plane->crtc = NULL; 409 } 410 } 411 412 list_del(&fb->filp_head); 413 414 drm_framebuffer_unreference(fb); 415 } 416 EXPORT_SYMBOL(drm_framebuffer_remove); 417 418 /** 419 * drm_crtc_init - Initialise a new CRTC object 420 * @dev: DRM device 421 * @crtc: CRTC object to init 422 * @funcs: callbacks for the new CRTC 423 * 424 * LOCKING: 425 * Takes mode_config lock. 426 * 427 * Inits a new object created as base part of an driver crtc object. 428 * 429 * RETURNS: 430 * Zero on success, error code on failure. 431 */ 432 int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, 433 const struct drm_crtc_funcs *funcs) 434 { 435 int ret; 436 437 crtc->dev = dev; 438 crtc->funcs = funcs; 439 crtc->invert_dimensions = false; 440 441 mutex_lock(&dev->mode_config.mutex); 442 443 ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); 444 if (ret) 445 goto out; 446 447 crtc->base.properties = &crtc->properties; 448 449 list_add_tail(&crtc->head, &dev->mode_config.crtc_list); 450 dev->mode_config.num_crtc++; 451 452 out: 453 mutex_unlock(&dev->mode_config.mutex); 454 455 return ret; 456 } 457 EXPORT_SYMBOL(drm_crtc_init); 458 459 /** 460 * drm_crtc_cleanup - Cleans up the core crtc usage. 461 * @crtc: CRTC to cleanup 462 * 463 * LOCKING: 464 * Caller must hold mode config lock. 465 * 466 * Cleanup @crtc. Removes from drm modesetting space 467 * does NOT free object, caller does that. 468 */ 469 void drm_crtc_cleanup(struct drm_crtc *crtc) 470 { 471 struct drm_device *dev = crtc->dev; 472 473 kfree(crtc->gamma_store); 474 crtc->gamma_store = NULL; 475 476 drm_mode_object_put(dev, &crtc->base); 477 list_del(&crtc->head); 478 dev->mode_config.num_crtc--; 479 } 480 EXPORT_SYMBOL(drm_crtc_cleanup); 481 482 /** 483 * drm_mode_probed_add - add a mode to a connector's probed mode list 484 * @connector: connector the new mode 485 * @mode: mode data 486 * 487 * LOCKING: 488 * Caller must hold mode config lock. 489 * 490 * Add @mode to @connector's mode list for later use. 491 */ 492 void drm_mode_probed_add(struct drm_connector *connector, 493 struct drm_display_mode *mode) 494 { 495 list_add(&mode->head, &connector->probed_modes); 496 } 497 EXPORT_SYMBOL(drm_mode_probed_add); 498 499 /** 500 * drm_mode_remove - remove and free a mode 501 * @connector: connector list to modify 502 * @mode: mode to remove 503 * 504 * LOCKING: 505 * Caller must hold mode config lock. 506 * 507 * Remove @mode from @connector's mode list, then free it. 508 */ 509 void drm_mode_remove(struct drm_connector *connector, 510 struct drm_display_mode *mode) 511 { 512 list_del(&mode->head); 513 drm_mode_destroy(connector->dev, mode); 514 } 515 EXPORT_SYMBOL(drm_mode_remove); 516 517 /** 518 * drm_connector_init - Init a preallocated connector 519 * @dev: DRM device 520 * @connector: the connector to init 521 * @funcs: callbacks for this connector 522 * @name: user visible name of the connector 523 * 524 * LOCKING: 525 * Takes mode config lock. 526 * 527 * Initialises a preallocated connector. Connectors should be 528 * subclassed as part of driver connector objects. 529 * 530 * RETURNS: 531 * Zero on success, error code on failure. 532 */ 533 int drm_connector_init(struct drm_device *dev, 534 struct drm_connector *connector, 535 const struct drm_connector_funcs *funcs, 536 int connector_type) 537 { 538 int ret; 539 540 mutex_lock(&dev->mode_config.mutex); 541 542 ret = drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR); 543 if (ret) 544 goto out; 545 546 connector->base.properties = &connector->properties; 547 connector->dev = dev; 548 connector->funcs = funcs; 549 connector->connector_type = connector_type; 550 connector->connector_type_id = 551 ++drm_connector_enum_list[connector_type].count; /* TODO */ 552 INIT_LIST_HEAD(&connector->user_modes); 553 INIT_LIST_HEAD(&connector->probed_modes); 554 INIT_LIST_HEAD(&connector->modes); 555 connector->edid_blob_ptr = NULL; 556 connector->status = connector_status_unknown; 557 558 list_add_tail(&connector->head, &dev->mode_config.connector_list); 559 dev->mode_config.num_connector++; 560 561 if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) 562 drm_object_attach_property(&connector->base, 563 dev->mode_config.edid_property, 564 0); 565 566 drm_object_attach_property(&connector->base, 567 dev->mode_config.dpms_property, 0); 568 569 out: 570 mutex_unlock(&dev->mode_config.mutex); 571 572 return ret; 573 } 574 EXPORT_SYMBOL(drm_connector_init); 575 576 /** 577 * drm_connector_cleanup - cleans up an initialised connector 578 * @connector: connector to cleanup 579 * 580 * LOCKING: 581 * Takes mode config lock. 582 * 583 * Cleans up the connector but doesn't free the object. 584 */ 585 void drm_connector_cleanup(struct drm_connector *connector) 586 { 587 struct drm_device *dev = connector->dev; 588 struct drm_display_mode *mode, *t; 589 590 list_for_each_entry_safe(mode, t, &connector->probed_modes, head) 591 drm_mode_remove(connector, mode); 592 593 list_for_each_entry_safe(mode, t, &connector->modes, head) 594 drm_mode_remove(connector, mode); 595 596 list_for_each_entry_safe(mode, t, &connector->user_modes, head) 597 drm_mode_remove(connector, mode); 598 599 mutex_lock(&dev->mode_config.mutex); 600 drm_mode_object_put(dev, &connector->base); 601 list_del(&connector->head); 602 dev->mode_config.num_connector--; 603 mutex_unlock(&dev->mode_config.mutex); 604 } 605 EXPORT_SYMBOL(drm_connector_cleanup); 606 607 void drm_connector_unplug_all(struct drm_device *dev) 608 { 609 struct drm_connector *connector; 610 611 /* taking the mode config mutex ends up in a clash with sysfs */ 612 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 613 drm_sysfs_connector_remove(connector); 614 615 } 616 EXPORT_SYMBOL(drm_connector_unplug_all); 617 618 int drm_encoder_init(struct drm_device *dev, 619 struct drm_encoder *encoder, 620 const struct drm_encoder_funcs *funcs, 621 int encoder_type) 622 { 623 int ret; 624 625 mutex_lock(&dev->mode_config.mutex); 626 627 ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); 628 if (ret) 629 goto out; 630 631 encoder->dev = dev; 632 encoder->encoder_type = encoder_type; 633 encoder->funcs = funcs; 634 635 list_add_tail(&encoder->head, &dev->mode_config.encoder_list); 636 dev->mode_config.num_encoder++; 637 638 out: 639 mutex_unlock(&dev->mode_config.mutex); 640 641 return ret; 642 } 643 EXPORT_SYMBOL(drm_encoder_init); 644 645 void drm_encoder_cleanup(struct drm_encoder *encoder) 646 { 647 struct drm_device *dev = encoder->dev; 648 mutex_lock(&dev->mode_config.mutex); 649 drm_mode_object_put(dev, &encoder->base); 650 list_del(&encoder->head); 651 dev->mode_config.num_encoder--; 652 mutex_unlock(&dev->mode_config.mutex); 653 } 654 EXPORT_SYMBOL(drm_encoder_cleanup); 655 656 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, 657 unsigned long possible_crtcs, 658 const struct drm_plane_funcs *funcs, 659 const uint32_t *formats, uint32_t format_count, 660 bool priv) 661 { 662 int ret; 663 664 mutex_lock(&dev->mode_config.mutex); 665 666 ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); 667 if (ret) 668 goto out; 669 670 plane->base.properties = &plane->properties; 671 plane->dev = dev; 672 plane->funcs = funcs; 673 plane->format_types = kmalloc(sizeof(uint32_t) * format_count, 674 GFP_KERNEL); 675 if (!plane->format_types) { 676 DRM_DEBUG_KMS("out of memory when allocating plane\n"); 677 drm_mode_object_put(dev, &plane->base); 678 ret = -ENOMEM; 679 goto out; 680 } 681 682 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); 683 plane->format_count = format_count; 684 plane->possible_crtcs = possible_crtcs; 685 686 /* private planes are not exposed to userspace, but depending on 687 * display hardware, might be convenient to allow sharing programming 688 * for the scanout engine with the crtc implementation. 689 */ 690 if (!priv) { 691 list_add_tail(&plane->head, &dev->mode_config.plane_list); 692 dev->mode_config.num_plane++; 693 } else { 694 INIT_LIST_HEAD(&plane->head); 695 } 696 697 out: 698 mutex_unlock(&dev->mode_config.mutex); 699 700 return ret; 701 } 702 EXPORT_SYMBOL(drm_plane_init); 703 704 void drm_plane_cleanup(struct drm_plane *plane) 705 { 706 struct drm_device *dev = plane->dev; 707 708 mutex_lock(&dev->mode_config.mutex); 709 kfree(plane->format_types); 710 drm_mode_object_put(dev, &plane->base); 711 /* if not added to a list, it must be a private plane */ 712 if (!list_empty(&plane->head)) { 713 list_del(&plane->head); 714 dev->mode_config.num_plane--; 715 } 716 mutex_unlock(&dev->mode_config.mutex); 717 } 718 EXPORT_SYMBOL(drm_plane_cleanup); 719 720 /** 721 * drm_mode_create - create a new display mode 722 * @dev: DRM device 723 * 724 * LOCKING: 725 * Caller must hold DRM mode_config lock. 726 * 727 * Create a new drm_display_mode, give it an ID, and return it. 728 * 729 * RETURNS: 730 * Pointer to new mode on success, NULL on error. 731 */ 732 struct drm_display_mode *drm_mode_create(struct drm_device *dev) 733 { 734 struct drm_display_mode *nmode; 735 736 nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); 737 if (!nmode) 738 return NULL; 739 740 if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { 741 kfree(nmode); 742 return NULL; 743 } 744 745 return nmode; 746 } 747 EXPORT_SYMBOL(drm_mode_create); 748 749 /** 750 * drm_mode_destroy - remove a mode 751 * @dev: DRM device 752 * @mode: mode to remove 753 * 754 * LOCKING: 755 * Caller must hold mode config lock. 756 * 757 * Free @mode's unique identifier, then free it. 758 */ 759 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) 760 { 761 if (!mode) 762 return; 763 764 drm_mode_object_put(dev, &mode->base); 765 766 kfree(mode); 767 } 768 EXPORT_SYMBOL(drm_mode_destroy); 769 770 static int drm_mode_create_standard_connector_properties(struct drm_device *dev) 771 { 772 struct drm_property *edid; 773 struct drm_property *dpms; 774 775 /* 776 * Standard properties (apply to all connectors) 777 */ 778 edid = drm_property_create(dev, DRM_MODE_PROP_BLOB | 779 DRM_MODE_PROP_IMMUTABLE, 780 "EDID", 0); 781 dev->mode_config.edid_property = edid; 782 783 dpms = drm_property_create_enum(dev, 0, 784 "DPMS", drm_dpms_enum_list, 785 ARRAY_SIZE(drm_dpms_enum_list)); 786 dev->mode_config.dpms_property = dpms; 787 788 return 0; 789 } 790 791 /** 792 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties 793 * @dev: DRM device 794 * 795 * Called by a driver the first time a DVI-I connector is made. 796 */ 797 int drm_mode_create_dvi_i_properties(struct drm_device *dev) 798 { 799 struct drm_property *dvi_i_selector; 800 struct drm_property *dvi_i_subconnector; 801 802 if (dev->mode_config.dvi_i_select_subconnector_property) 803 return 0; 804 805 dvi_i_selector = 806 drm_property_create_enum(dev, 0, 807 "select subconnector", 808 drm_dvi_i_select_enum_list, 809 ARRAY_SIZE(drm_dvi_i_select_enum_list)); 810 dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; 811 812 dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 813 "subconnector", 814 drm_dvi_i_subconnector_enum_list, 815 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); 816 dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; 817 818 return 0; 819 } 820 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); 821 822 /** 823 * drm_create_tv_properties - create TV specific connector properties 824 * @dev: DRM device 825 * @num_modes: number of different TV formats (modes) supported 826 * @modes: array of pointers to strings containing name of each format 827 * 828 * Called by a driver's TV initialization routine, this function creates 829 * the TV specific connector properties for a given device. Caller is 830 * responsible for allocating a list of format names and passing them to 831 * this routine. 832 */ 833 int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes, 834 char *modes[]) 835 { 836 struct drm_property *tv_selector; 837 struct drm_property *tv_subconnector; 838 int i; 839 840 if (dev->mode_config.tv_select_subconnector_property) 841 return 0; 842 843 /* 844 * Basic connector properties 845 */ 846 tv_selector = drm_property_create_enum(dev, 0, 847 "select subconnector", 848 drm_tv_select_enum_list, 849 ARRAY_SIZE(drm_tv_select_enum_list)); 850 dev->mode_config.tv_select_subconnector_property = tv_selector; 851 852 tv_subconnector = 853 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 854 "subconnector", 855 drm_tv_subconnector_enum_list, 856 ARRAY_SIZE(drm_tv_subconnector_enum_list)); 857 dev->mode_config.tv_subconnector_property = tv_subconnector; 858 859 /* 860 * Other, TV specific properties: margins & TV modes. 861 */ 862 dev->mode_config.tv_left_margin_property = 863 drm_property_create_range(dev, 0, "left margin", 0, 100); 864 865 dev->mode_config.tv_right_margin_property = 866 drm_property_create_range(dev, 0, "right margin", 0, 100); 867 868 dev->mode_config.tv_top_margin_property = 869 drm_property_create_range(dev, 0, "top margin", 0, 100); 870 871 dev->mode_config.tv_bottom_margin_property = 872 drm_property_create_range(dev, 0, "bottom margin", 0, 100); 873 874 dev->mode_config.tv_mode_property = 875 drm_property_create(dev, DRM_MODE_PROP_ENUM, 876 "mode", num_modes); 877 for (i = 0; i < num_modes; i++) 878 drm_property_add_enum(dev->mode_config.tv_mode_property, i, 879 i, modes[i]); 880 881 dev->mode_config.tv_brightness_property = 882 drm_property_create_range(dev, 0, "brightness", 0, 100); 883 884 dev->mode_config.tv_contrast_property = 885 drm_property_create_range(dev, 0, "contrast", 0, 100); 886 887 dev->mode_config.tv_flicker_reduction_property = 888 drm_property_create_range(dev, 0, "flicker reduction", 0, 100); 889 890 dev->mode_config.tv_overscan_property = 891 drm_property_create_range(dev, 0, "overscan", 0, 100); 892 893 dev->mode_config.tv_saturation_property = 894 drm_property_create_range(dev, 0, "saturation", 0, 100); 895 896 dev->mode_config.tv_hue_property = 897 drm_property_create_range(dev, 0, "hue", 0, 100); 898 899 return 0; 900 } 901 EXPORT_SYMBOL(drm_mode_create_tv_properties); 902 903 /** 904 * drm_mode_create_scaling_mode_property - create scaling mode property 905 * @dev: DRM device 906 * 907 * Called by a driver the first time it's needed, must be attached to desired 908 * connectors. 909 */ 910 int drm_mode_create_scaling_mode_property(struct drm_device *dev) 911 { 912 struct drm_property *scaling_mode; 913 914 if (dev->mode_config.scaling_mode_property) 915 return 0; 916 917 scaling_mode = 918 drm_property_create_enum(dev, 0, "scaling mode", 919 drm_scaling_mode_enum_list, 920 ARRAY_SIZE(drm_scaling_mode_enum_list)); 921 922 dev->mode_config.scaling_mode_property = scaling_mode; 923 924 return 0; 925 } 926 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); 927 928 /** 929 * drm_mode_create_dithering_property - create dithering property 930 * @dev: DRM device 931 * 932 * Called by a driver the first time it's needed, must be attached to desired 933 * connectors. 934 */ 935 int drm_mode_create_dithering_property(struct drm_device *dev) 936 { 937 struct drm_property *dithering_mode; 938 939 if (dev->mode_config.dithering_mode_property) 940 return 0; 941 942 dithering_mode = 943 drm_property_create_enum(dev, 0, "dithering", 944 drm_dithering_mode_enum_list, 945 ARRAY_SIZE(drm_dithering_mode_enum_list)); 946 dev->mode_config.dithering_mode_property = dithering_mode; 947 948 return 0; 949 } 950 EXPORT_SYMBOL(drm_mode_create_dithering_property); 951 952 /** 953 * drm_mode_create_dirty_property - create dirty property 954 * @dev: DRM device 955 * 956 * Called by a driver the first time it's needed, must be attached to desired 957 * connectors. 958 */ 959 int drm_mode_create_dirty_info_property(struct drm_device *dev) 960 { 961 struct drm_property *dirty_info; 962 963 if (dev->mode_config.dirty_info_property) 964 return 0; 965 966 dirty_info = 967 drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, 968 "dirty", 969 drm_dirty_info_enum_list, 970 ARRAY_SIZE(drm_dirty_info_enum_list)); 971 dev->mode_config.dirty_info_property = dirty_info; 972 973 return 0; 974 } 975 EXPORT_SYMBOL(drm_mode_create_dirty_info_property); 976 977 /** 978 * drm_mode_config_init - initialize DRM mode_configuration structure 979 * @dev: DRM device 980 * 981 * LOCKING: 982 * None, should happen single threaded at init time. 983 * 984 * Initialize @dev's mode_config structure, used for tracking the graphics 985 * configuration of @dev. 986 */ 987 void drm_mode_config_init(struct drm_device *dev) 988 { 989 mutex_init(&dev->mode_config.mutex); 990 mutex_init(&dev->mode_config.idr_mutex); 991 INIT_LIST_HEAD(&dev->mode_config.fb_list); 992 INIT_LIST_HEAD(&dev->mode_config.crtc_list); 993 INIT_LIST_HEAD(&dev->mode_config.connector_list); 994 INIT_LIST_HEAD(&dev->mode_config.encoder_list); 995 INIT_LIST_HEAD(&dev->mode_config.property_list); 996 INIT_LIST_HEAD(&dev->mode_config.property_blob_list); 997 INIT_LIST_HEAD(&dev->mode_config.plane_list); 998 idr_init(&dev->mode_config.crtc_idr); 999 1000 mutex_lock(&dev->mode_config.mutex); 1001 drm_mode_create_standard_connector_properties(dev); 1002 mutex_unlock(&dev->mode_config.mutex); 1003 1004 /* Just to be sure */ 1005 dev->mode_config.num_fb = 0; 1006 dev->mode_config.num_connector = 0; 1007 dev->mode_config.num_crtc = 0; 1008 dev->mode_config.num_encoder = 0; 1009 } 1010 EXPORT_SYMBOL(drm_mode_config_init); 1011 1012 int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) 1013 { 1014 uint32_t total_objects = 0; 1015 1016 total_objects += dev->mode_config.num_crtc; 1017 total_objects += dev->mode_config.num_connector; 1018 total_objects += dev->mode_config.num_encoder; 1019 1020 group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); 1021 if (!group->id_list) 1022 return -ENOMEM; 1023 1024 group->num_crtcs = 0; 1025 group->num_connectors = 0; 1026 group->num_encoders = 0; 1027 return 0; 1028 } 1029 1030 int drm_mode_group_init_legacy_group(struct drm_device *dev, 1031 struct drm_mode_group *group) 1032 { 1033 struct drm_crtc *crtc; 1034 struct drm_encoder *encoder; 1035 struct drm_connector *connector; 1036 int ret; 1037 1038 if ((ret = drm_mode_group_init(dev, group))) 1039 return ret; 1040 1041 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 1042 group->id_list[group->num_crtcs++] = crtc->base.id; 1043 1044 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 1045 group->id_list[group->num_crtcs + group->num_encoders++] = 1046 encoder->base.id; 1047 1048 list_for_each_entry(connector, &dev->mode_config.connector_list, head) 1049 group->id_list[group->num_crtcs + group->num_encoders + 1050 group->num_connectors++] = connector->base.id; 1051 1052 return 0; 1053 } 1054 EXPORT_SYMBOL(drm_mode_group_init_legacy_group); 1055 1056 /** 1057 * drm_mode_config_cleanup - free up DRM mode_config info 1058 * @dev: DRM device 1059 * 1060 * LOCKING: 1061 * Caller must hold mode config lock. 1062 * 1063 * Free up all the connectors and CRTCs associated with this DRM device, then 1064 * free up the framebuffers and associated buffer objects. 1065 * 1066 * FIXME: cleanup any dangling user buffer objects too 1067 */ 1068 void drm_mode_config_cleanup(struct drm_device *dev) 1069 { 1070 struct drm_connector *connector, *ot; 1071 struct drm_crtc *crtc, *ct; 1072 struct drm_encoder *encoder, *enct; 1073 struct drm_framebuffer *fb, *fbt; 1074 struct drm_property *property, *pt; 1075 struct drm_plane *plane, *plt; 1076 1077 list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, 1078 head) { 1079 encoder->funcs->destroy(encoder); 1080 } 1081 1082 list_for_each_entry_safe(connector, ot, 1083 &dev->mode_config.connector_list, head) { 1084 connector->funcs->destroy(connector); 1085 } 1086 1087 list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, 1088 head) { 1089 drm_property_destroy(dev, property); 1090 } 1091 1092 list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { 1093 drm_framebuffer_remove(fb); 1094 } 1095 1096 list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, 1097 head) { 1098 plane->funcs->destroy(plane); 1099 } 1100 1101 list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { 1102 crtc->funcs->destroy(crtc); 1103 } 1104 1105 idr_remove_all(&dev->mode_config.crtc_idr); 1106 idr_destroy(&dev->mode_config.crtc_idr); 1107 } 1108 EXPORT_SYMBOL(drm_mode_config_cleanup); 1109 1110 /** 1111 * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo 1112 * @out: drm_mode_modeinfo struct to return to the user 1113 * @in: drm_display_mode to use 1114 * 1115 * LOCKING: 1116 * None. 1117 * 1118 * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to 1119 * the user. 1120 */ 1121 static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, 1122 const struct drm_display_mode *in) 1123 { 1124 WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || 1125 in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || 1126 in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || 1127 in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || 1128 in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, 1129 "timing values too large for mode info\n"); 1130 1131 out->clock = in->clock; 1132 out->hdisplay = in->hdisplay; 1133 out->hsync_start = in->hsync_start; 1134 out->hsync_end = in->hsync_end; 1135 out->htotal = in->htotal; 1136 out->hskew = in->hskew; 1137 out->vdisplay = in->vdisplay; 1138 out->vsync_start = in->vsync_start; 1139 out->vsync_end = in->vsync_end; 1140 out->vtotal = in->vtotal; 1141 out->vscan = in->vscan; 1142 out->vrefresh = in->vrefresh; 1143 out->flags = in->flags; 1144 out->type = in->type; 1145 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1146 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1147 } 1148 1149 /** 1150 * drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode 1151 * @out: drm_display_mode to return to the user 1152 * @in: drm_mode_modeinfo to use 1153 * 1154 * LOCKING: 1155 * None. 1156 * 1157 * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to 1158 * the caller. 1159 * 1160 * RETURNS: 1161 * Zero on success, errno on failure. 1162 */ 1163 static int drm_crtc_convert_umode(struct drm_display_mode *out, 1164 const struct drm_mode_modeinfo *in) 1165 { 1166 if (in->clock > INT_MAX || in->vrefresh > INT_MAX) 1167 return -ERANGE; 1168 1169 out->clock = in->clock; 1170 out->hdisplay = in->hdisplay; 1171 out->hsync_start = in->hsync_start; 1172 out->hsync_end = in->hsync_end; 1173 out->htotal = in->htotal; 1174 out->hskew = in->hskew; 1175 out->vdisplay = in->vdisplay; 1176 out->vsync_start = in->vsync_start; 1177 out->vsync_end = in->vsync_end; 1178 out->vtotal = in->vtotal; 1179 out->vscan = in->vscan; 1180 out->vrefresh = in->vrefresh; 1181 out->flags = in->flags; 1182 out->type = in->type; 1183 strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); 1184 out->name[DRM_DISPLAY_MODE_LEN-1] = 0; 1185 1186 return 0; 1187 } 1188 1189 /** 1190 * drm_mode_getresources - get graphics configuration 1191 * @inode: inode from the ioctl 1192 * @filp: file * from the ioctl 1193 * @cmd: cmd from ioctl 1194 * @arg: arg from ioctl 1195 * 1196 * LOCKING: 1197 * Takes mode config lock. 1198 * 1199 * Construct a set of configuration description structures and return 1200 * them to the user, including CRTC, connector and framebuffer configuration. 1201 * 1202 * Called by the user via ioctl. 1203 * 1204 * RETURNS: 1205 * Zero on success, errno on failure. 1206 */ 1207 int drm_mode_getresources(struct drm_device *dev, void *data, 1208 struct drm_file *file_priv) 1209 { 1210 struct drm_mode_card_res *card_res = data; 1211 struct list_head *lh; 1212 struct drm_framebuffer *fb; 1213 struct drm_connector *connector; 1214 struct drm_crtc *crtc; 1215 struct drm_encoder *encoder; 1216 int ret = 0; 1217 int connector_count = 0; 1218 int crtc_count = 0; 1219 int fb_count = 0; 1220 int encoder_count = 0; 1221 int copied = 0, i; 1222 uint32_t __user *fb_id; 1223 uint32_t __user *crtc_id; 1224 uint32_t __user *connector_id; 1225 uint32_t __user *encoder_id; 1226 struct drm_mode_group *mode_group; 1227 1228 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1229 return -EINVAL; 1230 1231 mutex_lock(&dev->mode_config.mutex); 1232 1233 /* 1234 * For the non-control nodes we need to limit the list of resources 1235 * by IDs in the group list for this node 1236 */ 1237 list_for_each(lh, &file_priv->fbs) 1238 fb_count++; 1239 1240 mode_group = &file_priv->master->minor->mode_group; 1241 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1242 1243 list_for_each(lh, &dev->mode_config.crtc_list) 1244 crtc_count++; 1245 1246 list_for_each(lh, &dev->mode_config.connector_list) 1247 connector_count++; 1248 1249 list_for_each(lh, &dev->mode_config.encoder_list) 1250 encoder_count++; 1251 } else { 1252 1253 crtc_count = mode_group->num_crtcs; 1254 connector_count = mode_group->num_connectors; 1255 encoder_count = mode_group->num_encoders; 1256 } 1257 1258 card_res->max_height = dev->mode_config.max_height; 1259 card_res->min_height = dev->mode_config.min_height; 1260 card_res->max_width = dev->mode_config.max_width; 1261 card_res->min_width = dev->mode_config.min_width; 1262 1263 /* handle this in 4 parts */ 1264 /* FBs */ 1265 if (card_res->count_fbs >= fb_count) { 1266 copied = 0; 1267 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; 1268 list_for_each_entry(fb, &file_priv->fbs, filp_head) { 1269 if (put_user(fb->base.id, fb_id + copied)) { 1270 ret = -EFAULT; 1271 goto out; 1272 } 1273 copied++; 1274 } 1275 } 1276 card_res->count_fbs = fb_count; 1277 1278 /* CRTCs */ 1279 if (card_res->count_crtcs >= crtc_count) { 1280 copied = 0; 1281 crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; 1282 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1283 list_for_each_entry(crtc, &dev->mode_config.crtc_list, 1284 head) { 1285 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 1286 if (put_user(crtc->base.id, crtc_id + copied)) { 1287 ret = -EFAULT; 1288 goto out; 1289 } 1290 copied++; 1291 } 1292 } else { 1293 for (i = 0; i < mode_group->num_crtcs; i++) { 1294 if (put_user(mode_group->id_list[i], 1295 crtc_id + copied)) { 1296 ret = -EFAULT; 1297 goto out; 1298 } 1299 copied++; 1300 } 1301 } 1302 } 1303 card_res->count_crtcs = crtc_count; 1304 1305 /* Encoders */ 1306 if (card_res->count_encoders >= encoder_count) { 1307 copied = 0; 1308 encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; 1309 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1310 list_for_each_entry(encoder, 1311 &dev->mode_config.encoder_list, 1312 head) { 1313 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id, 1314 drm_get_encoder_name(encoder)); 1315 if (put_user(encoder->base.id, encoder_id + 1316 copied)) { 1317 ret = -EFAULT; 1318 goto out; 1319 } 1320 copied++; 1321 } 1322 } else { 1323 for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { 1324 if (put_user(mode_group->id_list[i], 1325 encoder_id + copied)) { 1326 ret = -EFAULT; 1327 goto out; 1328 } 1329 copied++; 1330 } 1331 1332 } 1333 } 1334 card_res->count_encoders = encoder_count; 1335 1336 /* Connectors */ 1337 if (card_res->count_connectors >= connector_count) { 1338 copied = 0; 1339 connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; 1340 if (file_priv->master->minor->type == DRM_MINOR_CONTROL) { 1341 list_for_each_entry(connector, 1342 &dev->mode_config.connector_list, 1343 head) { 1344 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 1345 connector->base.id, 1346 drm_get_connector_name(connector)); 1347 if (put_user(connector->base.id, 1348 connector_id + copied)) { 1349 ret = -EFAULT; 1350 goto out; 1351 } 1352 copied++; 1353 } 1354 } else { 1355 int start = mode_group->num_crtcs + 1356 mode_group->num_encoders; 1357 for (i = start; i < start + mode_group->num_connectors; i++) { 1358 if (put_user(mode_group->id_list[i], 1359 connector_id + copied)) { 1360 ret = -EFAULT; 1361 goto out; 1362 } 1363 copied++; 1364 } 1365 } 1366 } 1367 card_res->count_connectors = connector_count; 1368 1369 DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs, 1370 card_res->count_connectors, card_res->count_encoders); 1371 1372 out: 1373 mutex_unlock(&dev->mode_config.mutex); 1374 return ret; 1375 } 1376 1377 /** 1378 * drm_mode_getcrtc - get CRTC configuration 1379 * @inode: inode from the ioctl 1380 * @filp: file * from the ioctl 1381 * @cmd: cmd from ioctl 1382 * @arg: arg from ioctl 1383 * 1384 * LOCKING: 1385 * Takes mode config lock. 1386 * 1387 * Construct a CRTC configuration structure to return to the user. 1388 * 1389 * Called by the user via ioctl. 1390 * 1391 * RETURNS: 1392 * Zero on success, errno on failure. 1393 */ 1394 int drm_mode_getcrtc(struct drm_device *dev, 1395 void *data, struct drm_file *file_priv) 1396 { 1397 struct drm_mode_crtc *crtc_resp = data; 1398 struct drm_crtc *crtc; 1399 struct drm_mode_object *obj; 1400 int ret = 0; 1401 1402 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1403 return -EINVAL; 1404 1405 mutex_lock(&dev->mode_config.mutex); 1406 1407 obj = drm_mode_object_find(dev, crtc_resp->crtc_id, 1408 DRM_MODE_OBJECT_CRTC); 1409 if (!obj) { 1410 ret = -EINVAL; 1411 goto out; 1412 } 1413 crtc = obj_to_crtc(obj); 1414 1415 crtc_resp->x = crtc->x; 1416 crtc_resp->y = crtc->y; 1417 crtc_resp->gamma_size = crtc->gamma_size; 1418 if (crtc->fb) 1419 crtc_resp->fb_id = crtc->fb->base.id; 1420 else 1421 crtc_resp->fb_id = 0; 1422 1423 if (crtc->enabled) { 1424 1425 drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); 1426 crtc_resp->mode_valid = 1; 1427 1428 } else { 1429 crtc_resp->mode_valid = 0; 1430 } 1431 1432 out: 1433 mutex_unlock(&dev->mode_config.mutex); 1434 return ret; 1435 } 1436 1437 /** 1438 * drm_mode_getconnector - get connector configuration 1439 * @inode: inode from the ioctl 1440 * @filp: file * from the ioctl 1441 * @cmd: cmd from ioctl 1442 * @arg: arg from ioctl 1443 * 1444 * LOCKING: 1445 * Takes mode config lock. 1446 * 1447 * Construct a connector configuration structure to return to the user. 1448 * 1449 * Called by the user via ioctl. 1450 * 1451 * RETURNS: 1452 * Zero on success, errno on failure. 1453 */ 1454 int drm_mode_getconnector(struct drm_device *dev, void *data, 1455 struct drm_file *file_priv) 1456 { 1457 struct drm_mode_get_connector *out_resp = data; 1458 struct drm_mode_object *obj; 1459 struct drm_connector *connector; 1460 struct drm_display_mode *mode; 1461 int mode_count = 0; 1462 int props_count = 0; 1463 int encoders_count = 0; 1464 int ret = 0; 1465 int copied = 0; 1466 int i; 1467 struct drm_mode_modeinfo u_mode; 1468 struct drm_mode_modeinfo __user *mode_ptr; 1469 uint32_t __user *prop_ptr; 1470 uint64_t __user *prop_values; 1471 uint32_t __user *encoder_ptr; 1472 1473 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1474 return -EINVAL; 1475 1476 memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); 1477 1478 DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id); 1479 1480 mutex_lock(&dev->mode_config.mutex); 1481 1482 obj = drm_mode_object_find(dev, out_resp->connector_id, 1483 DRM_MODE_OBJECT_CONNECTOR); 1484 if (!obj) { 1485 ret = -EINVAL; 1486 goto out; 1487 } 1488 connector = obj_to_connector(obj); 1489 1490 props_count = connector->properties.count; 1491 1492 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1493 if (connector->encoder_ids[i] != 0) { 1494 encoders_count++; 1495 } 1496 } 1497 1498 if (out_resp->count_modes == 0) { 1499 connector->funcs->fill_modes(connector, 1500 dev->mode_config.max_width, 1501 dev->mode_config.max_height); 1502 } 1503 1504 /* delayed so we get modes regardless of pre-fill_modes state */ 1505 list_for_each_entry(mode, &connector->modes, head) 1506 mode_count++; 1507 1508 out_resp->connector_id = connector->base.id; 1509 out_resp->connector_type = connector->connector_type; 1510 out_resp->connector_type_id = connector->connector_type_id; 1511 out_resp->mm_width = connector->display_info.width_mm; 1512 out_resp->mm_height = connector->display_info.height_mm; 1513 out_resp->subpixel = connector->display_info.subpixel_order; 1514 out_resp->connection = connector->status; 1515 if (connector->encoder) 1516 out_resp->encoder_id = connector->encoder->base.id; 1517 else 1518 out_resp->encoder_id = 0; 1519 1520 /* 1521 * This ioctl is called twice, once to determine how much space is 1522 * needed, and the 2nd time to fill it. 1523 */ 1524 if ((out_resp->count_modes >= mode_count) && mode_count) { 1525 copied = 0; 1526 mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; 1527 list_for_each_entry(mode, &connector->modes, head) { 1528 drm_crtc_convert_to_umode(&u_mode, mode); 1529 if (copy_to_user(mode_ptr + copied, 1530 &u_mode, sizeof(u_mode))) { 1531 ret = -EFAULT; 1532 goto out; 1533 } 1534 copied++; 1535 } 1536 } 1537 out_resp->count_modes = mode_count; 1538 1539 if ((out_resp->count_props >= props_count) && props_count) { 1540 copied = 0; 1541 prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr); 1542 prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr); 1543 for (i = 0; i < connector->properties.count; i++) { 1544 if (put_user(connector->properties.ids[i], 1545 prop_ptr + copied)) { 1546 ret = -EFAULT; 1547 goto out; 1548 } 1549 1550 if (put_user(connector->properties.values[i], 1551 prop_values + copied)) { 1552 ret = -EFAULT; 1553 goto out; 1554 } 1555 copied++; 1556 } 1557 } 1558 out_resp->count_props = props_count; 1559 1560 if ((out_resp->count_encoders >= encoders_count) && encoders_count) { 1561 copied = 0; 1562 encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); 1563 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 1564 if (connector->encoder_ids[i] != 0) { 1565 if (put_user(connector->encoder_ids[i], 1566 encoder_ptr + copied)) { 1567 ret = -EFAULT; 1568 goto out; 1569 } 1570 copied++; 1571 } 1572 } 1573 } 1574 out_resp->count_encoders = encoders_count; 1575 1576 out: 1577 mutex_unlock(&dev->mode_config.mutex); 1578 return ret; 1579 } 1580 1581 int drm_mode_getencoder(struct drm_device *dev, void *data, 1582 struct drm_file *file_priv) 1583 { 1584 struct drm_mode_get_encoder *enc_resp = data; 1585 struct drm_mode_object *obj; 1586 struct drm_encoder *encoder; 1587 int ret = 0; 1588 1589 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1590 return -EINVAL; 1591 1592 mutex_lock(&dev->mode_config.mutex); 1593 obj = drm_mode_object_find(dev, enc_resp->encoder_id, 1594 DRM_MODE_OBJECT_ENCODER); 1595 if (!obj) { 1596 ret = -EINVAL; 1597 goto out; 1598 } 1599 encoder = obj_to_encoder(obj); 1600 1601 if (encoder->crtc) 1602 enc_resp->crtc_id = encoder->crtc->base.id; 1603 else 1604 enc_resp->crtc_id = 0; 1605 enc_resp->encoder_type = encoder->encoder_type; 1606 enc_resp->encoder_id = encoder->base.id; 1607 enc_resp->possible_crtcs = encoder->possible_crtcs; 1608 enc_resp->possible_clones = encoder->possible_clones; 1609 1610 out: 1611 mutex_unlock(&dev->mode_config.mutex); 1612 return ret; 1613 } 1614 1615 /** 1616 * drm_mode_getplane_res - get plane info 1617 * @dev: DRM device 1618 * @data: ioctl data 1619 * @file_priv: DRM file info 1620 * 1621 * LOCKING: 1622 * Takes mode config lock. 1623 * 1624 * Return an plane count and set of IDs. 1625 */ 1626 int drm_mode_getplane_res(struct drm_device *dev, void *data, 1627 struct drm_file *file_priv) 1628 { 1629 struct drm_mode_get_plane_res *plane_resp = data; 1630 struct drm_mode_config *config; 1631 struct drm_plane *plane; 1632 uint32_t __user *plane_ptr; 1633 int copied = 0, ret = 0; 1634 1635 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1636 return -EINVAL; 1637 1638 mutex_lock(&dev->mode_config.mutex); 1639 config = &dev->mode_config; 1640 1641 /* 1642 * This ioctl is called twice, once to determine how much space is 1643 * needed, and the 2nd time to fill it. 1644 */ 1645 if (config->num_plane && 1646 (plane_resp->count_planes >= config->num_plane)) { 1647 plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; 1648 1649 list_for_each_entry(plane, &config->plane_list, head) { 1650 if (put_user(plane->base.id, plane_ptr + copied)) { 1651 ret = -EFAULT; 1652 goto out; 1653 } 1654 copied++; 1655 } 1656 } 1657 plane_resp->count_planes = config->num_plane; 1658 1659 out: 1660 mutex_unlock(&dev->mode_config.mutex); 1661 return ret; 1662 } 1663 1664 /** 1665 * drm_mode_getplane - get plane info 1666 * @dev: DRM device 1667 * @data: ioctl data 1668 * @file_priv: DRM file info 1669 * 1670 * LOCKING: 1671 * Takes mode config lock. 1672 * 1673 * Return plane info, including formats supported, gamma size, any 1674 * current fb, etc. 1675 */ 1676 int drm_mode_getplane(struct drm_device *dev, void *data, 1677 struct drm_file *file_priv) 1678 { 1679 struct drm_mode_get_plane *plane_resp = data; 1680 struct drm_mode_object *obj; 1681 struct drm_plane *plane; 1682 uint32_t __user *format_ptr; 1683 int ret = 0; 1684 1685 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1686 return -EINVAL; 1687 1688 mutex_lock(&dev->mode_config.mutex); 1689 obj = drm_mode_object_find(dev, plane_resp->plane_id, 1690 DRM_MODE_OBJECT_PLANE); 1691 if (!obj) { 1692 ret = -ENOENT; 1693 goto out; 1694 } 1695 plane = obj_to_plane(obj); 1696 1697 if (plane->crtc) 1698 plane_resp->crtc_id = plane->crtc->base.id; 1699 else 1700 plane_resp->crtc_id = 0; 1701 1702 if (plane->fb) 1703 plane_resp->fb_id = plane->fb->base.id; 1704 else 1705 plane_resp->fb_id = 0; 1706 1707 plane_resp->plane_id = plane->base.id; 1708 plane_resp->possible_crtcs = plane->possible_crtcs; 1709 plane_resp->gamma_size = plane->gamma_size; 1710 1711 /* 1712 * This ioctl is called twice, once to determine how much space is 1713 * needed, and the 2nd time to fill it. 1714 */ 1715 if (plane->format_count && 1716 (plane_resp->count_format_types >= plane->format_count)) { 1717 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; 1718 if (copy_to_user(format_ptr, 1719 plane->format_types, 1720 sizeof(uint32_t) * plane->format_count)) { 1721 ret = -EFAULT; 1722 goto out; 1723 } 1724 } 1725 plane_resp->count_format_types = plane->format_count; 1726 1727 out: 1728 mutex_unlock(&dev->mode_config.mutex); 1729 return ret; 1730 } 1731 1732 /** 1733 * drm_mode_setplane - set up or tear down an plane 1734 * @dev: DRM device 1735 * @data: ioctl data* 1736 * @file_prive: DRM file info 1737 * 1738 * LOCKING: 1739 * Takes mode config lock. 1740 * 1741 * Set plane info, including placement, fb, scaling, and other factors. 1742 * Or pass a NULL fb to disable. 1743 */ 1744 int drm_mode_setplane(struct drm_device *dev, void *data, 1745 struct drm_file *file_priv) 1746 { 1747 struct drm_mode_set_plane *plane_req = data; 1748 struct drm_mode_object *obj; 1749 struct drm_plane *plane; 1750 struct drm_crtc *crtc; 1751 struct drm_framebuffer *fb; 1752 int ret = 0; 1753 unsigned int fb_width, fb_height; 1754 int i; 1755 1756 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1757 return -EINVAL; 1758 1759 mutex_lock(&dev->mode_config.mutex); 1760 1761 /* 1762 * First, find the plane, crtc, and fb objects. If not available, 1763 * we don't bother to call the driver. 1764 */ 1765 obj = drm_mode_object_find(dev, plane_req->plane_id, 1766 DRM_MODE_OBJECT_PLANE); 1767 if (!obj) { 1768 DRM_DEBUG_KMS("Unknown plane ID %d\n", 1769 plane_req->plane_id); 1770 ret = -ENOENT; 1771 goto out; 1772 } 1773 plane = obj_to_plane(obj); 1774 1775 /* No fb means shut it down */ 1776 if (!plane_req->fb_id) { 1777 plane->funcs->disable_plane(plane); 1778 plane->crtc = NULL; 1779 plane->fb = NULL; 1780 goto out; 1781 } 1782 1783 obj = drm_mode_object_find(dev, plane_req->crtc_id, 1784 DRM_MODE_OBJECT_CRTC); 1785 if (!obj) { 1786 DRM_DEBUG_KMS("Unknown crtc ID %d\n", 1787 plane_req->crtc_id); 1788 ret = -ENOENT; 1789 goto out; 1790 } 1791 crtc = obj_to_crtc(obj); 1792 1793 obj = drm_mode_object_find(dev, plane_req->fb_id, 1794 DRM_MODE_OBJECT_FB); 1795 if (!obj) { 1796 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", 1797 plane_req->fb_id); 1798 ret = -ENOENT; 1799 goto out; 1800 } 1801 fb = obj_to_fb(obj); 1802 1803 /* Check whether this plane supports the fb pixel format. */ 1804 for (i = 0; i < plane->format_count; i++) 1805 if (fb->pixel_format == plane->format_types[i]) 1806 break; 1807 if (i == plane->format_count) { 1808 DRM_DEBUG_KMS("Invalid pixel format 0x%08x\n", fb->pixel_format); 1809 ret = -EINVAL; 1810 goto out; 1811 } 1812 1813 fb_width = fb->width << 16; 1814 fb_height = fb->height << 16; 1815 1816 /* Make sure source coordinates are inside the fb. */ 1817 if (plane_req->src_w > fb_width || 1818 plane_req->src_x > fb_width - plane_req->src_w || 1819 plane_req->src_h > fb_height || 1820 plane_req->src_y > fb_height - plane_req->src_h) { 1821 DRM_DEBUG_KMS("Invalid source coordinates " 1822 "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", 1823 plane_req->src_w >> 16, 1824 ((plane_req->src_w & 0xffff) * 15625) >> 10, 1825 plane_req->src_h >> 16, 1826 ((plane_req->src_h & 0xffff) * 15625) >> 10, 1827 plane_req->src_x >> 16, 1828 ((plane_req->src_x & 0xffff) * 15625) >> 10, 1829 plane_req->src_y >> 16, 1830 ((plane_req->src_y & 0xffff) * 15625) >> 10); 1831 ret = -ENOSPC; 1832 goto out; 1833 } 1834 1835 /* Give drivers some help against integer overflows */ 1836 if (plane_req->crtc_w > INT_MAX || 1837 plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w || 1838 plane_req->crtc_h > INT_MAX || 1839 plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) { 1840 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", 1841 plane_req->crtc_w, plane_req->crtc_h, 1842 plane_req->crtc_x, plane_req->crtc_y); 1843 ret = -ERANGE; 1844 goto out; 1845 } 1846 1847 ret = plane->funcs->update_plane(plane, crtc, fb, 1848 plane_req->crtc_x, plane_req->crtc_y, 1849 plane_req->crtc_w, plane_req->crtc_h, 1850 plane_req->src_x, plane_req->src_y, 1851 plane_req->src_w, plane_req->src_h); 1852 if (!ret) { 1853 plane->crtc = crtc; 1854 plane->fb = fb; 1855 } 1856 1857 out: 1858 mutex_unlock(&dev->mode_config.mutex); 1859 1860 return ret; 1861 } 1862 1863 /** 1864 * drm_mode_setcrtc - set CRTC configuration 1865 * @inode: inode from the ioctl 1866 * @filp: file * from the ioctl 1867 * @cmd: cmd from ioctl 1868 * @arg: arg from ioctl 1869 * 1870 * LOCKING: 1871 * Takes mode config lock. 1872 * 1873 * Build a new CRTC configuration based on user request. 1874 * 1875 * Called by the user via ioctl. 1876 * 1877 * RETURNS: 1878 * Zero on success, errno on failure. 1879 */ 1880 int drm_mode_setcrtc(struct drm_device *dev, void *data, 1881 struct drm_file *file_priv) 1882 { 1883 struct drm_mode_config *config = &dev->mode_config; 1884 struct drm_mode_crtc *crtc_req = data; 1885 struct drm_mode_object *obj; 1886 struct drm_crtc *crtc; 1887 struct drm_connector **connector_set = NULL, *connector; 1888 struct drm_framebuffer *fb = NULL; 1889 struct drm_display_mode *mode = NULL; 1890 struct drm_mode_set set; 1891 uint32_t __user *set_connectors_ptr; 1892 int ret; 1893 int i; 1894 1895 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 1896 return -EINVAL; 1897 1898 /* For some reason crtc x/y offsets are signed internally. */ 1899 if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX) 1900 return -ERANGE; 1901 1902 mutex_lock(&dev->mode_config.mutex); 1903 obj = drm_mode_object_find(dev, crtc_req->crtc_id, 1904 DRM_MODE_OBJECT_CRTC); 1905 if (!obj) { 1906 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); 1907 ret = -EINVAL; 1908 goto out; 1909 } 1910 crtc = obj_to_crtc(obj); 1911 DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 1912 1913 if (crtc_req->mode_valid) { 1914 int hdisplay, vdisplay; 1915 /* If we have a mode we need a framebuffer. */ 1916 /* If we pass -1, set the mode with the currently bound fb */ 1917 if (crtc_req->fb_id == -1) { 1918 if (!crtc->fb) { 1919 DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); 1920 ret = -EINVAL; 1921 goto out; 1922 } 1923 fb = crtc->fb; 1924 } else { 1925 obj = drm_mode_object_find(dev, crtc_req->fb_id, 1926 DRM_MODE_OBJECT_FB); 1927 if (!obj) { 1928 DRM_DEBUG_KMS("Unknown FB ID%d\n", 1929 crtc_req->fb_id); 1930 ret = -EINVAL; 1931 goto out; 1932 } 1933 fb = obj_to_fb(obj); 1934 } 1935 1936 mode = drm_mode_create(dev); 1937 if (!mode) { 1938 ret = -ENOMEM; 1939 goto out; 1940 } 1941 1942 ret = drm_crtc_convert_umode(mode, &crtc_req->mode); 1943 if (ret) { 1944 DRM_DEBUG_KMS("Invalid mode\n"); 1945 goto out; 1946 } 1947 1948 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 1949 1950 hdisplay = mode->hdisplay; 1951 vdisplay = mode->vdisplay; 1952 1953 if (crtc->invert_dimensions) 1954 swap(hdisplay, vdisplay); 1955 1956 if (hdisplay > fb->width || 1957 vdisplay > fb->height || 1958 crtc_req->x > fb->width - hdisplay || 1959 crtc_req->y > fb->height - vdisplay) { 1960 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", 1961 fb->width, fb->height, 1962 hdisplay, vdisplay, crtc_req->x, crtc_req->y, 1963 crtc->invert_dimensions ? " (inverted)" : ""); 1964 ret = -ENOSPC; 1965 goto out; 1966 } 1967 } 1968 1969 if (crtc_req->count_connectors == 0 && mode) { 1970 DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); 1971 ret = -EINVAL; 1972 goto out; 1973 } 1974 1975 if (crtc_req->count_connectors > 0 && (!mode || !fb)) { 1976 DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", 1977 crtc_req->count_connectors); 1978 ret = -EINVAL; 1979 goto out; 1980 } 1981 1982 if (crtc_req->count_connectors > 0) { 1983 u32 out_id; 1984 1985 /* Avoid unbounded kernel memory allocation */ 1986 if (crtc_req->count_connectors > config->num_connector) { 1987 ret = -EINVAL; 1988 goto out; 1989 } 1990 1991 connector_set = kmalloc(crtc_req->count_connectors * 1992 sizeof(struct drm_connector *), 1993 GFP_KERNEL); 1994 if (!connector_set) { 1995 ret = -ENOMEM; 1996 goto out; 1997 } 1998 1999 for (i = 0; i < crtc_req->count_connectors; i++) { 2000 set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; 2001 if (get_user(out_id, &set_connectors_ptr[i])) { 2002 ret = -EFAULT; 2003 goto out; 2004 } 2005 2006 obj = drm_mode_object_find(dev, out_id, 2007 DRM_MODE_OBJECT_CONNECTOR); 2008 if (!obj) { 2009 DRM_DEBUG_KMS("Connector id %d unknown\n", 2010 out_id); 2011 ret = -EINVAL; 2012 goto out; 2013 } 2014 connector = obj_to_connector(obj); 2015 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", 2016 connector->base.id, 2017 drm_get_connector_name(connector)); 2018 2019 connector_set[i] = connector; 2020 } 2021 } 2022 2023 set.crtc = crtc; 2024 set.x = crtc_req->x; 2025 set.y = crtc_req->y; 2026 set.mode = mode; 2027 set.connectors = connector_set; 2028 set.num_connectors = crtc_req->count_connectors; 2029 set.fb = fb; 2030 ret = crtc->funcs->set_config(&set); 2031 2032 out: 2033 kfree(connector_set); 2034 drm_mode_destroy(dev, mode); 2035 mutex_unlock(&dev->mode_config.mutex); 2036 return ret; 2037 } 2038 2039 int drm_mode_cursor_ioctl(struct drm_device *dev, 2040 void *data, struct drm_file *file_priv) 2041 { 2042 struct drm_mode_cursor *req = data; 2043 struct drm_mode_object *obj; 2044 struct drm_crtc *crtc; 2045 int ret = 0; 2046 2047 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2048 return -EINVAL; 2049 2050 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) 2051 return -EINVAL; 2052 2053 mutex_lock(&dev->mode_config.mutex); 2054 obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC); 2055 if (!obj) { 2056 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); 2057 ret = -EINVAL; 2058 goto out; 2059 } 2060 crtc = obj_to_crtc(obj); 2061 2062 if (req->flags & DRM_MODE_CURSOR_BO) { 2063 if (!crtc->funcs->cursor_set) { 2064 ret = -ENXIO; 2065 goto out; 2066 } 2067 /* Turns off the cursor if handle is 0 */ 2068 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, 2069 req->width, req->height); 2070 } 2071 2072 if (req->flags & DRM_MODE_CURSOR_MOVE) { 2073 if (crtc->funcs->cursor_move) { 2074 ret = crtc->funcs->cursor_move(crtc, req->x, req->y); 2075 } else { 2076 ret = -EFAULT; 2077 goto out; 2078 } 2079 } 2080 out: 2081 mutex_unlock(&dev->mode_config.mutex); 2082 return ret; 2083 } 2084 2085 /* Original addfb only supported RGB formats, so figure out which one */ 2086 uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) 2087 { 2088 uint32_t fmt; 2089 2090 switch (bpp) { 2091 case 8: 2092 fmt = DRM_FORMAT_RGB332; 2093 break; 2094 case 16: 2095 if (depth == 15) 2096 fmt = DRM_FORMAT_XRGB1555; 2097 else 2098 fmt = DRM_FORMAT_RGB565; 2099 break; 2100 case 24: 2101 fmt = DRM_FORMAT_RGB888; 2102 break; 2103 case 32: 2104 if (depth == 24) 2105 fmt = DRM_FORMAT_XRGB8888; 2106 else if (depth == 30) 2107 fmt = DRM_FORMAT_XRGB2101010; 2108 else 2109 fmt = DRM_FORMAT_ARGB8888; 2110 break; 2111 default: 2112 DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n"); 2113 fmt = DRM_FORMAT_XRGB8888; 2114 break; 2115 } 2116 2117 return fmt; 2118 } 2119 EXPORT_SYMBOL(drm_mode_legacy_fb_format); 2120 2121 /** 2122 * drm_mode_addfb - add an FB to the graphics configuration 2123 * @inode: inode from the ioctl 2124 * @filp: file * from the ioctl 2125 * @cmd: cmd from ioctl 2126 * @arg: arg from ioctl 2127 * 2128 * LOCKING: 2129 * Takes mode config lock. 2130 * 2131 * Add a new FB to the specified CRTC, given a user request. 2132 * 2133 * Called by the user via ioctl. 2134 * 2135 * RETURNS: 2136 * Zero on success, errno on failure. 2137 */ 2138 int drm_mode_addfb(struct drm_device *dev, 2139 void *data, struct drm_file *file_priv) 2140 { 2141 struct drm_mode_fb_cmd *or = data; 2142 struct drm_mode_fb_cmd2 r = {}; 2143 struct drm_mode_config *config = &dev->mode_config; 2144 struct drm_framebuffer *fb; 2145 int ret = 0; 2146 2147 /* Use new struct with format internally */ 2148 r.fb_id = or->fb_id; 2149 r.width = or->width; 2150 r.height = or->height; 2151 r.pitches[0] = or->pitch; 2152 r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); 2153 r.handles[0] = or->handle; 2154 2155 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2156 return -EINVAL; 2157 2158 if ((config->min_width > r.width) || (r.width > config->max_width)) 2159 return -EINVAL; 2160 2161 if ((config->min_height > r.height) || (r.height > config->max_height)) 2162 return -EINVAL; 2163 2164 mutex_lock(&dev->mode_config.mutex); 2165 2166 /* TODO check buffer is sufficiently large */ 2167 /* TODO setup destructor callback */ 2168 2169 fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r); 2170 if (IS_ERR(fb)) { 2171 DRM_DEBUG_KMS("could not create framebuffer\n"); 2172 ret = PTR_ERR(fb); 2173 goto out; 2174 } 2175 2176 or->fb_id = fb->base.id; 2177 list_add(&fb->filp_head, &file_priv->fbs); 2178 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2179 2180 out: 2181 mutex_unlock(&dev->mode_config.mutex); 2182 return ret; 2183 } 2184 2185 static int format_check(const struct drm_mode_fb_cmd2 *r) 2186 { 2187 uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN; 2188 2189 switch (format) { 2190 case DRM_FORMAT_C8: 2191 case DRM_FORMAT_RGB332: 2192 case DRM_FORMAT_BGR233: 2193 case DRM_FORMAT_XRGB4444: 2194 case DRM_FORMAT_XBGR4444: 2195 case DRM_FORMAT_RGBX4444: 2196 case DRM_FORMAT_BGRX4444: 2197 case DRM_FORMAT_ARGB4444: 2198 case DRM_FORMAT_ABGR4444: 2199 case DRM_FORMAT_RGBA4444: 2200 case DRM_FORMAT_BGRA4444: 2201 case DRM_FORMAT_XRGB1555: 2202 case DRM_FORMAT_XBGR1555: 2203 case DRM_FORMAT_RGBX5551: 2204 case DRM_FORMAT_BGRX5551: 2205 case DRM_FORMAT_ARGB1555: 2206 case DRM_FORMAT_ABGR1555: 2207 case DRM_FORMAT_RGBA5551: 2208 case DRM_FORMAT_BGRA5551: 2209 case DRM_FORMAT_RGB565: 2210 case DRM_FORMAT_BGR565: 2211 case DRM_FORMAT_RGB888: 2212 case DRM_FORMAT_BGR888: 2213 case DRM_FORMAT_XRGB8888: 2214 case DRM_FORMAT_XBGR8888: 2215 case DRM_FORMAT_RGBX8888: 2216 case DRM_FORMAT_BGRX8888: 2217 case DRM_FORMAT_ARGB8888: 2218 case DRM_FORMAT_ABGR8888: 2219 case DRM_FORMAT_RGBA8888: 2220 case DRM_FORMAT_BGRA8888: 2221 case DRM_FORMAT_XRGB2101010: 2222 case DRM_FORMAT_XBGR2101010: 2223 case DRM_FORMAT_RGBX1010102: 2224 case DRM_FORMAT_BGRX1010102: 2225 case DRM_FORMAT_ARGB2101010: 2226 case DRM_FORMAT_ABGR2101010: 2227 case DRM_FORMAT_RGBA1010102: 2228 case DRM_FORMAT_BGRA1010102: 2229 case DRM_FORMAT_YUYV: 2230 case DRM_FORMAT_YVYU: 2231 case DRM_FORMAT_UYVY: 2232 case DRM_FORMAT_VYUY: 2233 case DRM_FORMAT_AYUV: 2234 case DRM_FORMAT_NV12: 2235 case DRM_FORMAT_NV21: 2236 case DRM_FORMAT_NV16: 2237 case DRM_FORMAT_NV61: 2238 case DRM_FORMAT_NV24: 2239 case DRM_FORMAT_NV42: 2240 case DRM_FORMAT_YUV410: 2241 case DRM_FORMAT_YVU410: 2242 case DRM_FORMAT_YUV411: 2243 case DRM_FORMAT_YVU411: 2244 case DRM_FORMAT_YUV420: 2245 case DRM_FORMAT_YVU420: 2246 case DRM_FORMAT_YUV422: 2247 case DRM_FORMAT_YVU422: 2248 case DRM_FORMAT_YUV444: 2249 case DRM_FORMAT_YVU444: 2250 return 0; 2251 default: 2252 return -EINVAL; 2253 } 2254 } 2255 2256 static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) 2257 { 2258 int ret, hsub, vsub, num_planes, i; 2259 2260 ret = format_check(r); 2261 if (ret) { 2262 DRM_DEBUG_KMS("bad framebuffer format 0x%08x\n", r->pixel_format); 2263 return ret; 2264 } 2265 2266 hsub = drm_format_horz_chroma_subsampling(r->pixel_format); 2267 vsub = drm_format_vert_chroma_subsampling(r->pixel_format); 2268 num_planes = drm_format_num_planes(r->pixel_format); 2269 2270 if (r->width == 0 || r->width % hsub) { 2271 DRM_DEBUG_KMS("bad framebuffer width %u\n", r->height); 2272 return -EINVAL; 2273 } 2274 2275 if (r->height == 0 || r->height % vsub) { 2276 DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height); 2277 return -EINVAL; 2278 } 2279 2280 for (i = 0; i < num_planes; i++) { 2281 unsigned int width = r->width / (i != 0 ? hsub : 1); 2282 unsigned int height = r->height / (i != 0 ? vsub : 1); 2283 unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i); 2284 2285 if (!r->handles[i]) { 2286 DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i); 2287 return -EINVAL; 2288 } 2289 2290 if ((uint64_t) width * cpp > UINT_MAX) 2291 return -ERANGE; 2292 2293 if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) 2294 return -ERANGE; 2295 2296 if (r->pitches[i] < width * cpp) { 2297 DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i); 2298 return -EINVAL; 2299 } 2300 } 2301 2302 return 0; 2303 } 2304 2305 /** 2306 * drm_mode_addfb2 - add an FB to the graphics configuration 2307 * @inode: inode from the ioctl 2308 * @filp: file * from the ioctl 2309 * @cmd: cmd from ioctl 2310 * @arg: arg from ioctl 2311 * 2312 * LOCKING: 2313 * Takes mode config lock. 2314 * 2315 * Add a new FB to the specified CRTC, given a user request with format. 2316 * 2317 * Called by the user via ioctl. 2318 * 2319 * RETURNS: 2320 * Zero on success, errno on failure. 2321 */ 2322 int drm_mode_addfb2(struct drm_device *dev, 2323 void *data, struct drm_file *file_priv) 2324 { 2325 struct drm_mode_fb_cmd2 *r = data; 2326 struct drm_mode_config *config = &dev->mode_config; 2327 struct drm_framebuffer *fb; 2328 int ret; 2329 2330 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2331 return -EINVAL; 2332 2333 if (r->flags & ~DRM_MODE_FB_INTERLACED) { 2334 DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags); 2335 return -EINVAL; 2336 } 2337 2338 if ((config->min_width > r->width) || (r->width > config->max_width)) { 2339 DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n", 2340 r->width, config->min_width, config->max_width); 2341 return -EINVAL; 2342 } 2343 if ((config->min_height > r->height) || (r->height > config->max_height)) { 2344 DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n", 2345 r->height, config->min_height, config->max_height); 2346 return -EINVAL; 2347 } 2348 2349 ret = framebuffer_check(r); 2350 if (ret) 2351 return ret; 2352 2353 mutex_lock(&dev->mode_config.mutex); 2354 2355 fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); 2356 if (IS_ERR(fb)) { 2357 DRM_DEBUG_KMS("could not create framebuffer\n"); 2358 ret = PTR_ERR(fb); 2359 goto out; 2360 } 2361 2362 r->fb_id = fb->base.id; 2363 list_add(&fb->filp_head, &file_priv->fbs); 2364 DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); 2365 2366 out: 2367 mutex_unlock(&dev->mode_config.mutex); 2368 return ret; 2369 } 2370 2371 /** 2372 * drm_mode_rmfb - remove an FB from the configuration 2373 * @inode: inode from the ioctl 2374 * @filp: file * from the ioctl 2375 * @cmd: cmd from ioctl 2376 * @arg: arg from ioctl 2377 * 2378 * LOCKING: 2379 * Takes mode config lock. 2380 * 2381 * Remove the FB specified by the user. 2382 * 2383 * Called by the user via ioctl. 2384 * 2385 * RETURNS: 2386 * Zero on success, errno on failure. 2387 */ 2388 int drm_mode_rmfb(struct drm_device *dev, 2389 void *data, struct drm_file *file_priv) 2390 { 2391 struct drm_mode_object *obj; 2392 struct drm_framebuffer *fb = NULL; 2393 struct drm_framebuffer *fbl = NULL; 2394 uint32_t *id = data; 2395 int ret = 0; 2396 int found = 0; 2397 2398 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2399 return -EINVAL; 2400 2401 mutex_lock(&dev->mode_config.mutex); 2402 obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB); 2403 /* TODO check that we really get a framebuffer back. */ 2404 if (!obj) { 2405 ret = -EINVAL; 2406 goto out; 2407 } 2408 fb = obj_to_fb(obj); 2409 2410 list_for_each_entry(fbl, &file_priv->fbs, filp_head) 2411 if (fb == fbl) 2412 found = 1; 2413 2414 if (!found) { 2415 ret = -EINVAL; 2416 goto out; 2417 } 2418 2419 drm_framebuffer_remove(fb); 2420 2421 out: 2422 mutex_unlock(&dev->mode_config.mutex); 2423 return ret; 2424 } 2425 2426 /** 2427 * drm_mode_getfb - get FB info 2428 * @inode: inode from the ioctl 2429 * @filp: file * from the ioctl 2430 * @cmd: cmd from ioctl 2431 * @arg: arg from ioctl 2432 * 2433 * LOCKING: 2434 * Takes mode config lock. 2435 * 2436 * Lookup the FB given its ID and return info about it. 2437 * 2438 * Called by the user via ioctl. 2439 * 2440 * RETURNS: 2441 * Zero on success, errno on failure. 2442 */ 2443 int drm_mode_getfb(struct drm_device *dev, 2444 void *data, struct drm_file *file_priv) 2445 { 2446 struct drm_mode_fb_cmd *r = data; 2447 struct drm_mode_object *obj; 2448 struct drm_framebuffer *fb; 2449 int ret = 0; 2450 2451 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2452 return -EINVAL; 2453 2454 mutex_lock(&dev->mode_config.mutex); 2455 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB); 2456 if (!obj) { 2457 ret = -EINVAL; 2458 goto out; 2459 } 2460 fb = obj_to_fb(obj); 2461 2462 r->height = fb->height; 2463 r->width = fb->width; 2464 r->depth = fb->depth; 2465 r->bpp = fb->bits_per_pixel; 2466 r->pitch = fb->pitches[0]; 2467 fb->funcs->create_handle(fb, file_priv, &r->handle); 2468 2469 out: 2470 mutex_unlock(&dev->mode_config.mutex); 2471 return ret; 2472 } 2473 2474 int drm_mode_dirtyfb_ioctl(struct drm_device *dev, 2475 void *data, struct drm_file *file_priv) 2476 { 2477 struct drm_clip_rect __user *clips_ptr; 2478 struct drm_clip_rect *clips = NULL; 2479 struct drm_mode_fb_dirty_cmd *r = data; 2480 struct drm_mode_object *obj; 2481 struct drm_framebuffer *fb; 2482 unsigned flags; 2483 int num_clips; 2484 int ret; 2485 2486 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2487 return -EINVAL; 2488 2489 mutex_lock(&dev->mode_config.mutex); 2490 obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB); 2491 if (!obj) { 2492 ret = -EINVAL; 2493 goto out_err1; 2494 } 2495 fb = obj_to_fb(obj); 2496 2497 num_clips = r->num_clips; 2498 clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; 2499 2500 if (!num_clips != !clips_ptr) { 2501 ret = -EINVAL; 2502 goto out_err1; 2503 } 2504 2505 flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; 2506 2507 /* If userspace annotates copy, clips must come in pairs */ 2508 if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { 2509 ret = -EINVAL; 2510 goto out_err1; 2511 } 2512 2513 if (num_clips && clips_ptr) { 2514 if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { 2515 ret = -EINVAL; 2516 goto out_err1; 2517 } 2518 clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); 2519 if (!clips) { 2520 ret = -ENOMEM; 2521 goto out_err1; 2522 } 2523 2524 ret = copy_from_user(clips, clips_ptr, 2525 num_clips * sizeof(*clips)); 2526 if (ret) { 2527 ret = -EFAULT; 2528 goto out_err2; 2529 } 2530 } 2531 2532 if (fb->funcs->dirty) { 2533 ret = fb->funcs->dirty(fb, file_priv, flags, r->color, 2534 clips, num_clips); 2535 } else { 2536 ret = -ENOSYS; 2537 goto out_err2; 2538 } 2539 2540 out_err2: 2541 kfree(clips); 2542 out_err1: 2543 mutex_unlock(&dev->mode_config.mutex); 2544 return ret; 2545 } 2546 2547 2548 /** 2549 * drm_fb_release - remove and free the FBs on this file 2550 * @filp: file * from the ioctl 2551 * 2552 * LOCKING: 2553 * Takes mode config lock. 2554 * 2555 * Destroy all the FBs associated with @filp. 2556 * 2557 * Called by the user via ioctl. 2558 * 2559 * RETURNS: 2560 * Zero on success, errno on failure. 2561 */ 2562 void drm_fb_release(struct drm_file *priv) 2563 { 2564 struct drm_device *dev = priv->minor->dev; 2565 struct drm_framebuffer *fb, *tfb; 2566 2567 mutex_lock(&dev->mode_config.mutex); 2568 list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { 2569 drm_framebuffer_remove(fb); 2570 } 2571 mutex_unlock(&dev->mode_config.mutex); 2572 } 2573 2574 /** 2575 * drm_mode_attachmode - add a mode to the user mode list 2576 * @dev: DRM device 2577 * @connector: connector to add the mode to 2578 * @mode: mode to add 2579 * 2580 * Add @mode to @connector's user mode list. 2581 */ 2582 static void drm_mode_attachmode(struct drm_device *dev, 2583 struct drm_connector *connector, 2584 struct drm_display_mode *mode) 2585 { 2586 list_add_tail(&mode->head, &connector->user_modes); 2587 } 2588 2589 int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc, 2590 const struct drm_display_mode *mode) 2591 { 2592 struct drm_connector *connector; 2593 int ret = 0; 2594 struct drm_display_mode *dup_mode, *next; 2595 LIST_HEAD(list); 2596 2597 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 2598 if (!connector->encoder) 2599 continue; 2600 if (connector->encoder->crtc == crtc) { 2601 dup_mode = drm_mode_duplicate(dev, mode); 2602 if (!dup_mode) { 2603 ret = -ENOMEM; 2604 goto out; 2605 } 2606 list_add_tail(&dup_mode->head, &list); 2607 } 2608 } 2609 2610 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 2611 if (!connector->encoder) 2612 continue; 2613 if (connector->encoder->crtc == crtc) 2614 list_move_tail(list.next, &connector->user_modes); 2615 } 2616 2617 WARN_ON(!list_empty(&list)); 2618 2619 out: 2620 list_for_each_entry_safe(dup_mode, next, &list, head) 2621 drm_mode_destroy(dev, dup_mode); 2622 2623 return ret; 2624 } 2625 EXPORT_SYMBOL(drm_mode_attachmode_crtc); 2626 2627 static int drm_mode_detachmode(struct drm_device *dev, 2628 struct drm_connector *connector, 2629 struct drm_display_mode *mode) 2630 { 2631 int found = 0; 2632 int ret = 0; 2633 struct drm_display_mode *match_mode, *t; 2634 2635 list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) { 2636 if (drm_mode_equal(match_mode, mode)) { 2637 list_del(&match_mode->head); 2638 drm_mode_destroy(dev, match_mode); 2639 found = 1; 2640 break; 2641 } 2642 } 2643 2644 if (!found) 2645 ret = -EINVAL; 2646 2647 return ret; 2648 } 2649 2650 int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode) 2651 { 2652 struct drm_connector *connector; 2653 2654 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 2655 drm_mode_detachmode(dev, connector, mode); 2656 } 2657 return 0; 2658 } 2659 EXPORT_SYMBOL(drm_mode_detachmode_crtc); 2660 2661 /** 2662 * drm_fb_attachmode - Attach a user mode to an connector 2663 * @inode: inode from the ioctl 2664 * @filp: file * from the ioctl 2665 * @cmd: cmd from ioctl 2666 * @arg: arg from ioctl 2667 * 2668 * This attaches a user specified mode to an connector. 2669 * Called by the user via ioctl. 2670 * 2671 * RETURNS: 2672 * Zero on success, errno on failure. 2673 */ 2674 int drm_mode_attachmode_ioctl(struct drm_device *dev, 2675 void *data, struct drm_file *file_priv) 2676 { 2677 struct drm_mode_mode_cmd *mode_cmd = data; 2678 struct drm_connector *connector; 2679 struct drm_display_mode *mode; 2680 struct drm_mode_object *obj; 2681 struct drm_mode_modeinfo *umode = &mode_cmd->mode; 2682 int ret; 2683 2684 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2685 return -EINVAL; 2686 2687 mutex_lock(&dev->mode_config.mutex); 2688 2689 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR); 2690 if (!obj) { 2691 ret = -EINVAL; 2692 goto out; 2693 } 2694 connector = obj_to_connector(obj); 2695 2696 mode = drm_mode_create(dev); 2697 if (!mode) { 2698 ret = -ENOMEM; 2699 goto out; 2700 } 2701 2702 ret = drm_crtc_convert_umode(mode, umode); 2703 if (ret) { 2704 DRM_DEBUG_KMS("Invalid mode\n"); 2705 drm_mode_destroy(dev, mode); 2706 goto out; 2707 } 2708 2709 drm_mode_attachmode(dev, connector, mode); 2710 out: 2711 mutex_unlock(&dev->mode_config.mutex); 2712 return ret; 2713 } 2714 2715 2716 /** 2717 * drm_fb_detachmode - Detach a user specified mode from an connector 2718 * @inode: inode from the ioctl 2719 * @filp: file * from the ioctl 2720 * @cmd: cmd from ioctl 2721 * @arg: arg from ioctl 2722 * 2723 * Called by the user via ioctl. 2724 * 2725 * RETURNS: 2726 * Zero on success, errno on failure. 2727 */ 2728 int drm_mode_detachmode_ioctl(struct drm_device *dev, 2729 void *data, struct drm_file *file_priv) 2730 { 2731 struct drm_mode_object *obj; 2732 struct drm_mode_mode_cmd *mode_cmd = data; 2733 struct drm_connector *connector; 2734 struct drm_display_mode mode; 2735 struct drm_mode_modeinfo *umode = &mode_cmd->mode; 2736 int ret; 2737 2738 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 2739 return -EINVAL; 2740 2741 mutex_lock(&dev->mode_config.mutex); 2742 2743 obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR); 2744 if (!obj) { 2745 ret = -EINVAL; 2746 goto out; 2747 } 2748 connector = obj_to_connector(obj); 2749 2750 ret = drm_crtc_convert_umode(&mode, umode); 2751 if (ret) { 2752 DRM_DEBUG_KMS("Invalid mode\n"); 2753 goto out; 2754 } 2755 2756 ret = drm_mode_detachmode(dev, connector, &mode); 2757 out: 2758 mutex_unlock(&dev->mode_config.mutex); 2759 return ret; 2760 } 2761 2762 struct drm_property *drm_property_create(struct drm_device *dev, int flags, 2763 const char *name, int num_values) 2764 { 2765 struct drm_property *property = NULL; 2766 int ret; 2767 2768 property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); 2769 if (!property) 2770 return NULL; 2771 2772 if (num_values) { 2773 property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); 2774 if (!property->values) 2775 goto fail; 2776 } 2777 2778 ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); 2779 if (ret) 2780 goto fail; 2781 2782 property->flags = flags; 2783 property->num_values = num_values; 2784 INIT_LIST_HEAD(&property->enum_blob_list); 2785 2786 if (name) { 2787 strncpy(property->name, name, DRM_PROP_NAME_LEN); 2788 property->name[DRM_PROP_NAME_LEN-1] = '\0'; 2789 } 2790 2791 list_add_tail(&property->head, &dev->mode_config.property_list); 2792 return property; 2793 fail: 2794 kfree(property->values); 2795 kfree(property); 2796 return NULL; 2797 } 2798 EXPORT_SYMBOL(drm_property_create); 2799 2800 struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, 2801 const char *name, 2802 const struct drm_prop_enum_list *props, 2803 int num_values) 2804 { 2805 struct drm_property *property; 2806 int i, ret; 2807 2808 flags |= DRM_MODE_PROP_ENUM; 2809 2810 property = drm_property_create(dev, flags, name, num_values); 2811 if (!property) 2812 return NULL; 2813 2814 for (i = 0; i < num_values; i++) { 2815 ret = drm_property_add_enum(property, i, 2816 props[i].type, 2817 props[i].name); 2818 if (ret) { 2819 drm_property_destroy(dev, property); 2820 return NULL; 2821 } 2822 } 2823 2824 return property; 2825 } 2826 EXPORT_SYMBOL(drm_property_create_enum); 2827 2828 struct drm_property *drm_property_create_bitmask(struct drm_device *dev, 2829 int flags, const char *name, 2830 const struct drm_prop_enum_list *props, 2831 int num_values) 2832 { 2833 struct drm_property *property; 2834 int i, ret; 2835 2836 flags |= DRM_MODE_PROP_BITMASK; 2837 2838 property = drm_property_create(dev, flags, name, num_values); 2839 if (!property) 2840 return NULL; 2841 2842 for (i = 0; i < num_values; i++) { 2843 ret = drm_property_add_enum(property, i, 2844 props[i].type, 2845 props[i].name); 2846 if (ret) { 2847 drm_property_destroy(dev, property); 2848 return NULL; 2849 } 2850 } 2851 2852 return property; 2853 } 2854 EXPORT_SYMBOL(drm_property_create_bitmask); 2855 2856 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, 2857 const char *name, 2858 uint64_t min, uint64_t max) 2859 { 2860 struct drm_property *property; 2861 2862 flags |= DRM_MODE_PROP_RANGE; 2863 2864 property = drm_property_create(dev, flags, name, 2); 2865 if (!property) 2866 return NULL; 2867 2868 property->values[0] = min; 2869 property->values[1] = max; 2870 2871 return property; 2872 } 2873 EXPORT_SYMBOL(drm_property_create_range); 2874 2875 int drm_property_add_enum(struct drm_property *property, int index, 2876 uint64_t value, const char *name) 2877 { 2878 struct drm_property_enum *prop_enum; 2879 2880 if (!(property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK))) 2881 return -EINVAL; 2882 2883 /* 2884 * Bitmask enum properties have the additional constraint of values 2885 * from 0 to 63 2886 */ 2887 if ((property->flags & DRM_MODE_PROP_BITMASK) && (value > 63)) 2888 return -EINVAL; 2889 2890 if (!list_empty(&property->enum_blob_list)) { 2891 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 2892 if (prop_enum->value == value) { 2893 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2894 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2895 return 0; 2896 } 2897 } 2898 } 2899 2900 prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); 2901 if (!prop_enum) 2902 return -ENOMEM; 2903 2904 strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); 2905 prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; 2906 prop_enum->value = value; 2907 2908 property->values[index] = value; 2909 list_add_tail(&prop_enum->head, &property->enum_blob_list); 2910 return 0; 2911 } 2912 EXPORT_SYMBOL(drm_property_add_enum); 2913 2914 void drm_property_destroy(struct drm_device *dev, struct drm_property *property) 2915 { 2916 struct drm_property_enum *prop_enum, *pt; 2917 2918 list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) { 2919 list_del(&prop_enum->head); 2920 kfree(prop_enum); 2921 } 2922 2923 if (property->num_values) 2924 kfree(property->values); 2925 drm_mode_object_put(dev, &property->base); 2926 list_del(&property->head); 2927 kfree(property); 2928 } 2929 EXPORT_SYMBOL(drm_property_destroy); 2930 2931 void drm_object_attach_property(struct drm_mode_object *obj, 2932 struct drm_property *property, 2933 uint64_t init_val) 2934 { 2935 int count = obj->properties->count; 2936 2937 if (count == DRM_OBJECT_MAX_PROPERTY) { 2938 WARN(1, "Failed to attach object property (type: 0x%x). Please " 2939 "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time " 2940 "you see this message on the same object type.\n", 2941 obj->type); 2942 return; 2943 } 2944 2945 obj->properties->ids[count] = property->base.id; 2946 obj->properties->values[count] = init_val; 2947 obj->properties->count++; 2948 } 2949 EXPORT_SYMBOL(drm_object_attach_property); 2950 2951 int drm_object_property_set_value(struct drm_mode_object *obj, 2952 struct drm_property *property, uint64_t val) 2953 { 2954 int i; 2955 2956 for (i = 0; i < obj->properties->count; i++) { 2957 if (obj->properties->ids[i] == property->base.id) { 2958 obj->properties->values[i] = val; 2959 return 0; 2960 } 2961 } 2962 2963 return -EINVAL; 2964 } 2965 EXPORT_SYMBOL(drm_object_property_set_value); 2966 2967 int drm_object_property_get_value(struct drm_mode_object *obj, 2968 struct drm_property *property, uint64_t *val) 2969 { 2970 int i; 2971 2972 for (i = 0; i < obj->properties->count; i++) { 2973 if (obj->properties->ids[i] == property->base.id) { 2974 *val = obj->properties->values[i]; 2975 return 0; 2976 } 2977 } 2978 2979 return -EINVAL; 2980 } 2981 EXPORT_SYMBOL(drm_object_property_get_value); 2982 2983 int drm_mode_getproperty_ioctl(struct drm_device *dev, 2984 void *data, struct drm_file *file_priv) 2985 { 2986 struct drm_mode_object *obj; 2987 struct drm_mode_get_property *out_resp = data; 2988 struct drm_property *property; 2989 int enum_count = 0; 2990 int blob_count = 0; 2991 int value_count = 0; 2992 int ret = 0, i; 2993 int copied; 2994 struct drm_property_enum *prop_enum; 2995 struct drm_mode_property_enum __user *enum_ptr; 2996 struct drm_property_blob *prop_blob; 2997 uint32_t __user *blob_id_ptr; 2998 uint64_t __user *values_ptr; 2999 uint32_t __user *blob_length_ptr; 3000 3001 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3002 return -EINVAL; 3003 3004 mutex_lock(&dev->mode_config.mutex); 3005 obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY); 3006 if (!obj) { 3007 ret = -EINVAL; 3008 goto done; 3009 } 3010 property = obj_to_property(obj); 3011 3012 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 3013 list_for_each_entry(prop_enum, &property->enum_blob_list, head) 3014 enum_count++; 3015 } else if (property->flags & DRM_MODE_PROP_BLOB) { 3016 list_for_each_entry(prop_blob, &property->enum_blob_list, head) 3017 blob_count++; 3018 } 3019 3020 value_count = property->num_values; 3021 3022 strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); 3023 out_resp->name[DRM_PROP_NAME_LEN-1] = 0; 3024 out_resp->flags = property->flags; 3025 3026 if ((out_resp->count_values >= value_count) && value_count) { 3027 values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; 3028 for (i = 0; i < value_count; i++) { 3029 if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { 3030 ret = -EFAULT; 3031 goto done; 3032 } 3033 } 3034 } 3035 out_resp->count_values = value_count; 3036 3037 if (property->flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) { 3038 if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { 3039 copied = 0; 3040 enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; 3041 list_for_each_entry(prop_enum, &property->enum_blob_list, head) { 3042 3043 if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { 3044 ret = -EFAULT; 3045 goto done; 3046 } 3047 3048 if (copy_to_user(&enum_ptr[copied].name, 3049 &prop_enum->name, DRM_PROP_NAME_LEN)) { 3050 ret = -EFAULT; 3051 goto done; 3052 } 3053 copied++; 3054 } 3055 } 3056 out_resp->count_enum_blobs = enum_count; 3057 } 3058 3059 if (property->flags & DRM_MODE_PROP_BLOB) { 3060 if ((out_resp->count_enum_blobs >= blob_count) && blob_count) { 3061 copied = 0; 3062 blob_id_ptr = (uint32_t __user *)(unsigned long)out_resp->enum_blob_ptr; 3063 blob_length_ptr = (uint32_t __user *)(unsigned long)out_resp->values_ptr; 3064 3065 list_for_each_entry(prop_blob, &property->enum_blob_list, head) { 3066 if (put_user(prop_blob->base.id, blob_id_ptr + copied)) { 3067 ret = -EFAULT; 3068 goto done; 3069 } 3070 3071 if (put_user(prop_blob->length, blob_length_ptr + copied)) { 3072 ret = -EFAULT; 3073 goto done; 3074 } 3075 3076 copied++; 3077 } 3078 } 3079 out_resp->count_enum_blobs = blob_count; 3080 } 3081 done: 3082 mutex_unlock(&dev->mode_config.mutex); 3083 return ret; 3084 } 3085 3086 static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, 3087 void *data) 3088 { 3089 struct drm_property_blob *blob; 3090 int ret; 3091 3092 if (!length || !data) 3093 return NULL; 3094 3095 blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); 3096 if (!blob) 3097 return NULL; 3098 3099 ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); 3100 if (ret) { 3101 kfree(blob); 3102 return NULL; 3103 } 3104 3105 blob->length = length; 3106 3107 memcpy(blob->data, data, length); 3108 3109 list_add_tail(&blob->head, &dev->mode_config.property_blob_list); 3110 return blob; 3111 } 3112 3113 static void drm_property_destroy_blob(struct drm_device *dev, 3114 struct drm_property_blob *blob) 3115 { 3116 drm_mode_object_put(dev, &blob->base); 3117 list_del(&blob->head); 3118 kfree(blob); 3119 } 3120 3121 int drm_mode_getblob_ioctl(struct drm_device *dev, 3122 void *data, struct drm_file *file_priv) 3123 { 3124 struct drm_mode_object *obj; 3125 struct drm_mode_get_blob *out_resp = data; 3126 struct drm_property_blob *blob; 3127 int ret = 0; 3128 void __user *blob_ptr; 3129 3130 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3131 return -EINVAL; 3132 3133 mutex_lock(&dev->mode_config.mutex); 3134 obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB); 3135 if (!obj) { 3136 ret = -EINVAL; 3137 goto done; 3138 } 3139 blob = obj_to_blob(obj); 3140 3141 if (out_resp->length == blob->length) { 3142 blob_ptr = (void __user *)(unsigned long)out_resp->data; 3143 if (copy_to_user(blob_ptr, blob->data, blob->length)){ 3144 ret = -EFAULT; 3145 goto done; 3146 } 3147 } 3148 out_resp->length = blob->length; 3149 3150 done: 3151 mutex_unlock(&dev->mode_config.mutex); 3152 return ret; 3153 } 3154 3155 int drm_mode_connector_update_edid_property(struct drm_connector *connector, 3156 struct edid *edid) 3157 { 3158 struct drm_device *dev = connector->dev; 3159 int ret, size; 3160 3161 if (connector->edid_blob_ptr) 3162 drm_property_destroy_blob(dev, connector->edid_blob_ptr); 3163 3164 /* Delete edid, when there is none. */ 3165 if (!edid) { 3166 connector->edid_blob_ptr = NULL; 3167 ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0); 3168 return ret; 3169 } 3170 3171 size = EDID_LENGTH * (1 + edid->extensions); 3172 connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 3173 size, edid); 3174 if (!connector->edid_blob_ptr) 3175 return -EINVAL; 3176 3177 ret = drm_object_property_set_value(&connector->base, 3178 dev->mode_config.edid_property, 3179 connector->edid_blob_ptr->base.id); 3180 3181 return ret; 3182 } 3183 EXPORT_SYMBOL(drm_mode_connector_update_edid_property); 3184 3185 static bool drm_property_change_is_valid(struct drm_property *property, 3186 uint64_t value) 3187 { 3188 if (property->flags & DRM_MODE_PROP_IMMUTABLE) 3189 return false; 3190 if (property->flags & DRM_MODE_PROP_RANGE) { 3191 if (value < property->values[0] || value > property->values[1]) 3192 return false; 3193 return true; 3194 } else if (property->flags & DRM_MODE_PROP_BITMASK) { 3195 int i; 3196 uint64_t valid_mask = 0; 3197 for (i = 0; i < property->num_values; i++) 3198 valid_mask |= (1ULL << property->values[i]); 3199 return !(value & ~valid_mask); 3200 } else if (property->flags & DRM_MODE_PROP_BLOB) { 3201 /* Only the driver knows */ 3202 return true; 3203 } else { 3204 int i; 3205 for (i = 0; i < property->num_values; i++) 3206 if (property->values[i] == value) 3207 return true; 3208 return false; 3209 } 3210 } 3211 3212 int drm_mode_connector_property_set_ioctl(struct drm_device *dev, 3213 void *data, struct drm_file *file_priv) 3214 { 3215 struct drm_mode_connector_set_property *conn_set_prop = data; 3216 struct drm_mode_obj_set_property obj_set_prop = { 3217 .value = conn_set_prop->value, 3218 .prop_id = conn_set_prop->prop_id, 3219 .obj_id = conn_set_prop->connector_id, 3220 .obj_type = DRM_MODE_OBJECT_CONNECTOR 3221 }; 3222 3223 /* It does all the locking and checking we need */ 3224 return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); 3225 } 3226 3227 static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, 3228 struct drm_property *property, 3229 uint64_t value) 3230 { 3231 int ret = -EINVAL; 3232 struct drm_connector *connector = obj_to_connector(obj); 3233 3234 /* Do DPMS ourselves */ 3235 if (property == connector->dev->mode_config.dpms_property) { 3236 if (connector->funcs->dpms) 3237 (*connector->funcs->dpms)(connector, (int)value); 3238 ret = 0; 3239 } else if (connector->funcs->set_property) 3240 ret = connector->funcs->set_property(connector, property, value); 3241 3242 /* store the property value if successful */ 3243 if (!ret) 3244 drm_object_property_set_value(&connector->base, property, value); 3245 return ret; 3246 } 3247 3248 static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, 3249 struct drm_property *property, 3250 uint64_t value) 3251 { 3252 int ret = -EINVAL; 3253 struct drm_crtc *crtc = obj_to_crtc(obj); 3254 3255 if (crtc->funcs->set_property) 3256 ret = crtc->funcs->set_property(crtc, property, value); 3257 if (!ret) 3258 drm_object_property_set_value(obj, property, value); 3259 3260 return ret; 3261 } 3262 3263 static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj, 3264 struct drm_property *property, 3265 uint64_t value) 3266 { 3267 int ret = -EINVAL; 3268 struct drm_plane *plane = obj_to_plane(obj); 3269 3270 if (plane->funcs->set_property) 3271 ret = plane->funcs->set_property(plane, property, value); 3272 if (!ret) 3273 drm_object_property_set_value(obj, property, value); 3274 3275 return ret; 3276 } 3277 3278 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, 3279 struct drm_file *file_priv) 3280 { 3281 struct drm_mode_obj_get_properties *arg = data; 3282 struct drm_mode_object *obj; 3283 int ret = 0; 3284 int i; 3285 int copied = 0; 3286 int props_count = 0; 3287 uint32_t __user *props_ptr; 3288 uint64_t __user *prop_values_ptr; 3289 3290 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3291 return -EINVAL; 3292 3293 mutex_lock(&dev->mode_config.mutex); 3294 3295 obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3296 if (!obj) { 3297 ret = -EINVAL; 3298 goto out; 3299 } 3300 if (!obj->properties) { 3301 ret = -EINVAL; 3302 goto out; 3303 } 3304 3305 props_count = obj->properties->count; 3306 3307 /* This ioctl is called twice, once to determine how much space is 3308 * needed, and the 2nd time to fill it. */ 3309 if ((arg->count_props >= props_count) && props_count) { 3310 copied = 0; 3311 props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); 3312 prop_values_ptr = (uint64_t __user *)(unsigned long) 3313 (arg->prop_values_ptr); 3314 for (i = 0; i < props_count; i++) { 3315 if (put_user(obj->properties->ids[i], 3316 props_ptr + copied)) { 3317 ret = -EFAULT; 3318 goto out; 3319 } 3320 if (put_user(obj->properties->values[i], 3321 prop_values_ptr + copied)) { 3322 ret = -EFAULT; 3323 goto out; 3324 } 3325 copied++; 3326 } 3327 } 3328 arg->count_props = props_count; 3329 out: 3330 mutex_unlock(&dev->mode_config.mutex); 3331 return ret; 3332 } 3333 3334 int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, 3335 struct drm_file *file_priv) 3336 { 3337 struct drm_mode_obj_set_property *arg = data; 3338 struct drm_mode_object *arg_obj; 3339 struct drm_mode_object *prop_obj; 3340 struct drm_property *property; 3341 int ret = -EINVAL; 3342 int i; 3343 3344 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3345 return -EINVAL; 3346 3347 mutex_lock(&dev->mode_config.mutex); 3348 3349 arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); 3350 if (!arg_obj) 3351 goto out; 3352 if (!arg_obj->properties) 3353 goto out; 3354 3355 for (i = 0; i < arg_obj->properties->count; i++) 3356 if (arg_obj->properties->ids[i] == arg->prop_id) 3357 break; 3358 3359 if (i == arg_obj->properties->count) 3360 goto out; 3361 3362 prop_obj = drm_mode_object_find(dev, arg->prop_id, 3363 DRM_MODE_OBJECT_PROPERTY); 3364 if (!prop_obj) 3365 goto out; 3366 property = obj_to_property(prop_obj); 3367 3368 if (!drm_property_change_is_valid(property, arg->value)) 3369 goto out; 3370 3371 switch (arg_obj->type) { 3372 case DRM_MODE_OBJECT_CONNECTOR: 3373 ret = drm_mode_connector_set_obj_prop(arg_obj, property, 3374 arg->value); 3375 break; 3376 case DRM_MODE_OBJECT_CRTC: 3377 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value); 3378 break; 3379 case DRM_MODE_OBJECT_PLANE: 3380 ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value); 3381 break; 3382 } 3383 3384 out: 3385 mutex_unlock(&dev->mode_config.mutex); 3386 return ret; 3387 } 3388 3389 int drm_mode_connector_attach_encoder(struct drm_connector *connector, 3390 struct drm_encoder *encoder) 3391 { 3392 int i; 3393 3394 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3395 if (connector->encoder_ids[i] == 0) { 3396 connector->encoder_ids[i] = encoder->base.id; 3397 return 0; 3398 } 3399 } 3400 return -ENOMEM; 3401 } 3402 EXPORT_SYMBOL(drm_mode_connector_attach_encoder); 3403 3404 void drm_mode_connector_detach_encoder(struct drm_connector *connector, 3405 struct drm_encoder *encoder) 3406 { 3407 int i; 3408 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { 3409 if (connector->encoder_ids[i] == encoder->base.id) { 3410 connector->encoder_ids[i] = 0; 3411 if (connector->encoder == encoder) 3412 connector->encoder = NULL; 3413 break; 3414 } 3415 } 3416 } 3417 EXPORT_SYMBOL(drm_mode_connector_detach_encoder); 3418 3419 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, 3420 int gamma_size) 3421 { 3422 crtc->gamma_size = gamma_size; 3423 3424 crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); 3425 if (!crtc->gamma_store) { 3426 crtc->gamma_size = 0; 3427 return -ENOMEM; 3428 } 3429 3430 return 0; 3431 } 3432 EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); 3433 3434 int drm_mode_gamma_set_ioctl(struct drm_device *dev, 3435 void *data, struct drm_file *file_priv) 3436 { 3437 struct drm_mode_crtc_lut *crtc_lut = data; 3438 struct drm_mode_object *obj; 3439 struct drm_crtc *crtc; 3440 void *r_base, *g_base, *b_base; 3441 int size; 3442 int ret = 0; 3443 3444 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3445 return -EINVAL; 3446 3447 mutex_lock(&dev->mode_config.mutex); 3448 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3449 if (!obj) { 3450 ret = -EINVAL; 3451 goto out; 3452 } 3453 crtc = obj_to_crtc(obj); 3454 3455 if (crtc->funcs->gamma_set == NULL) { 3456 ret = -ENOSYS; 3457 goto out; 3458 } 3459 3460 /* memcpy into gamma store */ 3461 if (crtc_lut->gamma_size != crtc->gamma_size) { 3462 ret = -EINVAL; 3463 goto out; 3464 } 3465 3466 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3467 r_base = crtc->gamma_store; 3468 if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { 3469 ret = -EFAULT; 3470 goto out; 3471 } 3472 3473 g_base = r_base + size; 3474 if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { 3475 ret = -EFAULT; 3476 goto out; 3477 } 3478 3479 b_base = g_base + size; 3480 if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { 3481 ret = -EFAULT; 3482 goto out; 3483 } 3484 3485 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); 3486 3487 out: 3488 mutex_unlock(&dev->mode_config.mutex); 3489 return ret; 3490 3491 } 3492 3493 int drm_mode_gamma_get_ioctl(struct drm_device *dev, 3494 void *data, struct drm_file *file_priv) 3495 { 3496 struct drm_mode_crtc_lut *crtc_lut = data; 3497 struct drm_mode_object *obj; 3498 struct drm_crtc *crtc; 3499 void *r_base, *g_base, *b_base; 3500 int size; 3501 int ret = 0; 3502 3503 if (!drm_core_check_feature(dev, DRIVER_MODESET)) 3504 return -EINVAL; 3505 3506 mutex_lock(&dev->mode_config.mutex); 3507 obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC); 3508 if (!obj) { 3509 ret = -EINVAL; 3510 goto out; 3511 } 3512 crtc = obj_to_crtc(obj); 3513 3514 /* memcpy into gamma store */ 3515 if (crtc_lut->gamma_size != crtc->gamma_size) { 3516 ret = -EINVAL; 3517 goto out; 3518 } 3519 3520 size = crtc_lut->gamma_size * (sizeof(uint16_t)); 3521 r_base = crtc->gamma_store; 3522 if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { 3523 ret = -EFAULT; 3524 goto out; 3525 } 3526 3527 g_base = r_base + size; 3528 if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { 3529 ret = -EFAULT; 3530 goto out; 3531 } 3532 3533 b_base = g_base + size; 3534 if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { 3535 ret = -EFAULT; 3536 goto out; 3537 } 3538 out: 3539 mutex_unlock(&dev->mode_config.mutex); 3540 return ret; 3541 } 3542 3543 int drm_mode_page_flip_ioctl(struct drm_device *dev, 3544 void *data, struct drm_file *file_priv) 3545 { 3546 struct drm_mode_crtc_page_flip *page_flip = data; 3547 struct drm_mode_object *obj; 3548 struct drm_crtc *crtc; 3549 struct drm_framebuffer *fb; 3550 struct drm_pending_vblank_event *e = NULL; 3551 unsigned long flags; 3552 int hdisplay, vdisplay; 3553 int ret = -EINVAL; 3554 3555 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || 3556 page_flip->reserved != 0) 3557 return -EINVAL; 3558 3559 mutex_lock(&dev->mode_config.mutex); 3560 obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC); 3561 if (!obj) 3562 goto out; 3563 crtc = obj_to_crtc(obj); 3564 3565 if (crtc->fb == NULL) { 3566 /* The framebuffer is currently unbound, presumably 3567 * due to a hotplug event, that userspace has not 3568 * yet discovered. 3569 */ 3570 ret = -EBUSY; 3571 goto out; 3572 } 3573 3574 if (crtc->funcs->page_flip == NULL) 3575 goto out; 3576 3577 obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB); 3578 if (!obj) 3579 goto out; 3580 fb = obj_to_fb(obj); 3581 3582 hdisplay = crtc->mode.hdisplay; 3583 vdisplay = crtc->mode.vdisplay; 3584 3585 if (crtc->invert_dimensions) 3586 swap(hdisplay, vdisplay); 3587 3588 if (hdisplay > fb->width || 3589 vdisplay > fb->height || 3590 crtc->x > fb->width - hdisplay || 3591 crtc->y > fb->height - vdisplay) { 3592 DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", 3593 fb->width, fb->height, hdisplay, vdisplay, crtc->x, crtc->y, 3594 crtc->invert_dimensions ? " (inverted)" : ""); 3595 ret = -ENOSPC; 3596 goto out; 3597 } 3598 3599 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3600 ret = -ENOMEM; 3601 spin_lock_irqsave(&dev->event_lock, flags); 3602 if (file_priv->event_space < sizeof e->event) { 3603 spin_unlock_irqrestore(&dev->event_lock, flags); 3604 goto out; 3605 } 3606 file_priv->event_space -= sizeof e->event; 3607 spin_unlock_irqrestore(&dev->event_lock, flags); 3608 3609 e = kzalloc(sizeof *e, GFP_KERNEL); 3610 if (e == NULL) { 3611 spin_lock_irqsave(&dev->event_lock, flags); 3612 file_priv->event_space += sizeof e->event; 3613 spin_unlock_irqrestore(&dev->event_lock, flags); 3614 goto out; 3615 } 3616 3617 e->event.base.type = DRM_EVENT_FLIP_COMPLETE; 3618 e->event.base.length = sizeof e->event; 3619 e->event.user_data = page_flip->user_data; 3620 e->base.event = &e->event.base; 3621 e->base.file_priv = file_priv; 3622 e->base.destroy = 3623 (void (*) (struct drm_pending_event *)) kfree; 3624 } 3625 3626 ret = crtc->funcs->page_flip(crtc, fb, e); 3627 if (ret) { 3628 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { 3629 spin_lock_irqsave(&dev->event_lock, flags); 3630 file_priv->event_space += sizeof e->event; 3631 spin_unlock_irqrestore(&dev->event_lock, flags); 3632 kfree(e); 3633 } 3634 } 3635 3636 out: 3637 mutex_unlock(&dev->mode_config.mutex); 3638 return ret; 3639 } 3640 3641 void drm_mode_config_reset(struct drm_device *dev) 3642 { 3643 struct drm_crtc *crtc; 3644 struct drm_encoder *encoder; 3645 struct drm_connector *connector; 3646 3647 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 3648 if (crtc->funcs->reset) 3649 crtc->funcs->reset(crtc); 3650 3651 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 3652 if (encoder->funcs->reset) 3653 encoder->funcs->reset(encoder); 3654 3655 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 3656 connector->status = connector_status_unknown; 3657 3658 if (connector->funcs->reset) 3659 connector->funcs->reset(connector); 3660 } 3661 } 3662 EXPORT_SYMBOL(drm_mode_config_reset); 3663 3664 int drm_mode_create_dumb_ioctl(struct drm_device *dev, 3665 void *data, struct drm_file *file_priv) 3666 { 3667 struct drm_mode_create_dumb *args = data; 3668 3669 if (!dev->driver->dumb_create) 3670 return -ENOSYS; 3671 return dev->driver->dumb_create(file_priv, dev, args); 3672 } 3673 3674 int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, 3675 void *data, struct drm_file *file_priv) 3676 { 3677 struct drm_mode_map_dumb *args = data; 3678 3679 /* call driver ioctl to get mmap offset */ 3680 if (!dev->driver->dumb_map_offset) 3681 return -ENOSYS; 3682 3683 return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); 3684 } 3685 3686 int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, 3687 void *data, struct drm_file *file_priv) 3688 { 3689 struct drm_mode_destroy_dumb *args = data; 3690 3691 if (!dev->driver->dumb_destroy) 3692 return -ENOSYS; 3693 3694 return dev->driver->dumb_destroy(file_priv, dev, args->handle); 3695 } 3696 3697 /* 3698 * Just need to support RGB formats here for compat with code that doesn't 3699 * use pixel formats directly yet. 3700 */ 3701 void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, 3702 int *bpp) 3703 { 3704 switch (format) { 3705 case DRM_FORMAT_RGB332: 3706 case DRM_FORMAT_BGR233: 3707 *depth = 8; 3708 *bpp = 8; 3709 break; 3710 case DRM_FORMAT_XRGB1555: 3711 case DRM_FORMAT_XBGR1555: 3712 case DRM_FORMAT_RGBX5551: 3713 case DRM_FORMAT_BGRX5551: 3714 case DRM_FORMAT_ARGB1555: 3715 case DRM_FORMAT_ABGR1555: 3716 case DRM_FORMAT_RGBA5551: 3717 case DRM_FORMAT_BGRA5551: 3718 *depth = 15; 3719 *bpp = 16; 3720 break; 3721 case DRM_FORMAT_RGB565: 3722 case DRM_FORMAT_BGR565: 3723 *depth = 16; 3724 *bpp = 16; 3725 break; 3726 case DRM_FORMAT_RGB888: 3727 case DRM_FORMAT_BGR888: 3728 *depth = 24; 3729 *bpp = 24; 3730 break; 3731 case DRM_FORMAT_XRGB8888: 3732 case DRM_FORMAT_XBGR8888: 3733 case DRM_FORMAT_RGBX8888: 3734 case DRM_FORMAT_BGRX8888: 3735 *depth = 24; 3736 *bpp = 32; 3737 break; 3738 case DRM_FORMAT_XRGB2101010: 3739 case DRM_FORMAT_XBGR2101010: 3740 case DRM_FORMAT_RGBX1010102: 3741 case DRM_FORMAT_BGRX1010102: 3742 case DRM_FORMAT_ARGB2101010: 3743 case DRM_FORMAT_ABGR2101010: 3744 case DRM_FORMAT_RGBA1010102: 3745 case DRM_FORMAT_BGRA1010102: 3746 *depth = 30; 3747 *bpp = 32; 3748 break; 3749 case DRM_FORMAT_ARGB8888: 3750 case DRM_FORMAT_ABGR8888: 3751 case DRM_FORMAT_RGBA8888: 3752 case DRM_FORMAT_BGRA8888: 3753 *depth = 32; 3754 *bpp = 32; 3755 break; 3756 default: 3757 DRM_DEBUG_KMS("unsupported pixel format\n"); 3758 *depth = 0; 3759 *bpp = 0; 3760 break; 3761 } 3762 } 3763 EXPORT_SYMBOL(drm_fb_get_bpp_depth); 3764 3765 /** 3766 * drm_format_num_planes - get the number of planes for format 3767 * @format: pixel format (DRM_FORMAT_*) 3768 * 3769 * RETURNS: 3770 * The number of planes used by the specified pixel format. 3771 */ 3772 int drm_format_num_planes(uint32_t format) 3773 { 3774 switch (format) { 3775 case DRM_FORMAT_YUV410: 3776 case DRM_FORMAT_YVU410: 3777 case DRM_FORMAT_YUV411: 3778 case DRM_FORMAT_YVU411: 3779 case DRM_FORMAT_YUV420: 3780 case DRM_FORMAT_YVU420: 3781 case DRM_FORMAT_YUV422: 3782 case DRM_FORMAT_YVU422: 3783 case DRM_FORMAT_YUV444: 3784 case DRM_FORMAT_YVU444: 3785 return 3; 3786 case DRM_FORMAT_NV12: 3787 case DRM_FORMAT_NV21: 3788 case DRM_FORMAT_NV16: 3789 case DRM_FORMAT_NV61: 3790 case DRM_FORMAT_NV24: 3791 case DRM_FORMAT_NV42: 3792 return 2; 3793 default: 3794 return 1; 3795 } 3796 } 3797 EXPORT_SYMBOL(drm_format_num_planes); 3798 3799 /** 3800 * drm_format_plane_cpp - determine the bytes per pixel value 3801 * @format: pixel format (DRM_FORMAT_*) 3802 * @plane: plane index 3803 * 3804 * RETURNS: 3805 * The bytes per pixel value for the specified plane. 3806 */ 3807 int drm_format_plane_cpp(uint32_t format, int plane) 3808 { 3809 unsigned int depth; 3810 int bpp; 3811 3812 if (plane >= drm_format_num_planes(format)) 3813 return 0; 3814 3815 switch (format) { 3816 case DRM_FORMAT_YUYV: 3817 case DRM_FORMAT_YVYU: 3818 case DRM_FORMAT_UYVY: 3819 case DRM_FORMAT_VYUY: 3820 return 2; 3821 case DRM_FORMAT_NV12: 3822 case DRM_FORMAT_NV21: 3823 case DRM_FORMAT_NV16: 3824 case DRM_FORMAT_NV61: 3825 case DRM_FORMAT_NV24: 3826 case DRM_FORMAT_NV42: 3827 return plane ? 2 : 1; 3828 case DRM_FORMAT_YUV410: 3829 case DRM_FORMAT_YVU410: 3830 case DRM_FORMAT_YUV411: 3831 case DRM_FORMAT_YVU411: 3832 case DRM_FORMAT_YUV420: 3833 case DRM_FORMAT_YVU420: 3834 case DRM_FORMAT_YUV422: 3835 case DRM_FORMAT_YVU422: 3836 case DRM_FORMAT_YUV444: 3837 case DRM_FORMAT_YVU444: 3838 return 1; 3839 default: 3840 drm_fb_get_bpp_depth(format, &depth, &bpp); 3841 return bpp >> 3; 3842 } 3843 } 3844 EXPORT_SYMBOL(drm_format_plane_cpp); 3845 3846 /** 3847 * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor 3848 * @format: pixel format (DRM_FORMAT_*) 3849 * 3850 * RETURNS: 3851 * The horizontal chroma subsampling factor for the 3852 * specified pixel format. 3853 */ 3854 int drm_format_horz_chroma_subsampling(uint32_t format) 3855 { 3856 switch (format) { 3857 case DRM_FORMAT_YUV411: 3858 case DRM_FORMAT_YVU411: 3859 case DRM_FORMAT_YUV410: 3860 case DRM_FORMAT_YVU410: 3861 return 4; 3862 case DRM_FORMAT_YUYV: 3863 case DRM_FORMAT_YVYU: 3864 case DRM_FORMAT_UYVY: 3865 case DRM_FORMAT_VYUY: 3866 case DRM_FORMAT_NV12: 3867 case DRM_FORMAT_NV21: 3868 case DRM_FORMAT_NV16: 3869 case DRM_FORMAT_NV61: 3870 case DRM_FORMAT_YUV422: 3871 case DRM_FORMAT_YVU422: 3872 case DRM_FORMAT_YUV420: 3873 case DRM_FORMAT_YVU420: 3874 return 2; 3875 default: 3876 return 1; 3877 } 3878 } 3879 EXPORT_SYMBOL(drm_format_horz_chroma_subsampling); 3880 3881 /** 3882 * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor 3883 * @format: pixel format (DRM_FORMAT_*) 3884 * 3885 * RETURNS: 3886 * The vertical chroma subsampling factor for the 3887 * specified pixel format. 3888 */ 3889 int drm_format_vert_chroma_subsampling(uint32_t format) 3890 { 3891 switch (format) { 3892 case DRM_FORMAT_YUV410: 3893 case DRM_FORMAT_YVU410: 3894 return 4; 3895 case DRM_FORMAT_YUV420: 3896 case DRM_FORMAT_YVU420: 3897 case DRM_FORMAT_NV12: 3898 case DRM_FORMAT_NV21: 3899 return 2; 3900 default: 3901 return 1; 3902 } 3903 } 3904 EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); 3905
Indexes created Fri Sep 26 20:09:58 GMT 2025