1 /* 2 * Copyright (C) 2014 Red Hat 3 * Copyright (C) 2014 Intel Corp. 4 * Copyright (C) 2018 Intel Corp. 5 * Copyright (c) 2020, The Linux Foundation. All rights reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 * OTHER DEALINGS IN THE SOFTWARE. 24 * 25 * Authors: 26 * Rob Clark <robdclark@gmail.com> 27 * Daniel Vetter <daniel.vetter@ffwll.ch> 28 */ 29 30 #include <drm/drm_atomic_uapi.h> 31 #include <drm/drm_atomic.h> 32 #include <drm/drm_framebuffer.h> 33 #include <drm/drm_print.h> 34 #include <drm/drm_drv.h> 35 #include <drm/drm_writeback.h> 36 #include <drm/drm_vblank.h> 37 38 #include <linux/dma-fence.h> 39 #include <linux/uaccess.h> 40 #include <linux/sync_file.h> 41 #include <linux/file.h> 42 43 #include "drm_crtc_internal.h" 44 45 /** 46 * DOC: overview 47 * 48 * This file contains the marshalling and demarshalling glue for the atomic UAPI 49 * in all its forms: The monster ATOMIC IOCTL itself, code for GET_PROPERTY and 50 * SET_PROPERTY IOCTLs. Plus interface functions for compatibility helpers and 51 * drivers which have special needs to construct their own atomic updates, e.g. 52 * for load detect or similar. 53 */ 54 55 /** 56 * drm_atomic_set_mode_for_crtc - set mode for CRTC 57 * @state: the CRTC whose incoming state to update 58 * @mode: kernel-internal mode to use for the CRTC, or NULL to disable 59 * 60 * Set a mode (originating from the kernel) on the desired CRTC state and update 61 * the enable property. 62 * 63 * RETURNS: 64 * Zero on success, error code on failure. Cannot return -EDEADLK. 65 */ 66 int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state, 67 const struct drm_display_mode *mode) 68 { 69 struct drm_crtc *crtc = state->crtc; 70 struct drm_mode_modeinfo umode; 71 72 /* Early return for no change. */ 73 if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0) 74 return 0; 75 76 drm_property_blob_put(state->mode_blob); 77 state->mode_blob = NULL; 78 79 if (mode) { 80 struct drm_property_blob *blob; 81 82 drm_mode_convert_to_umode(&umode, mode); 83 blob = drm_property_create_blob(crtc->dev, 84 sizeof(umode), &umode); 85 if (IS_ERR(blob)) 86 return PTR_ERR(blob); 87 88 drm_mode_copy(&state->mode, mode); 89 90 state->mode_blob = blob; 91 state->enable = true; 92 drm_dbg_atomic(crtc->dev, 93 "Set [MODE:%s] for [CRTC:%d:%s] state %p\n", 94 mode->name, crtc->base.id, crtc->name, state); 95 } else { 96 memset(&state->mode, 0, sizeof(state->mode)); 97 state->enable = false; 98 drm_dbg_atomic(crtc->dev, 99 "Set [NOMODE] for [CRTC:%d:%s] state %p\n", 100 crtc->base.id, crtc->name, state); 101 } 102 103 return 0; 104 } 105 EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc); 106 107 /** 108 * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC 109 * @state: the CRTC whose incoming state to update 110 * @blob: pointer to blob property to use for mode 111 * 112 * Set a mode (originating from a blob property) on the desired CRTC state. 113 * This function will take a reference on the blob property for the CRTC state, 114 * and release the reference held on the state's existing mode property, if any 115 * was set. 116 * 117 * RETURNS: 118 * Zero on success, error code on failure. Cannot return -EDEADLK. 119 */ 120 int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state, 121 struct drm_property_blob *blob) 122 { 123 struct drm_crtc *crtc = state->crtc; 124 125 if (blob == state->mode_blob) 126 return 0; 127 128 drm_property_blob_put(state->mode_blob); 129 state->mode_blob = NULL; 130 131 memset(&state->mode, 0, sizeof(state->mode)); 132 133 if (blob) { 134 int ret; 135 136 if (blob->length != sizeof(struct drm_mode_modeinfo)) { 137 drm_dbg_atomic(crtc->dev, 138 "[CRTC:%d:%s] bad mode blob length: %zu\n", 139 crtc->base.id, crtc->name, 140 blob->length); 141 return -EINVAL; 142 } 143 144 ret = drm_mode_convert_umode(crtc->dev, 145 &state->mode, blob->data); 146 if (ret) { 147 drm_dbg_atomic(crtc->dev, 148 "[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n", 149 crtc->base.id, crtc->name, 150 ret, drm_get_mode_status_name(state->mode.status)); 151 drm_mode_debug_printmodeline(&state->mode); 152 return -EINVAL; 153 } 154 155 state->mode_blob = drm_property_blob_get(blob); 156 state->enable = true; 157 drm_dbg_atomic(crtc->dev, 158 "Set [MODE:%s] for [CRTC:%d:%s] state %p\n", 159 state->mode.name, crtc->base.id, crtc->name, 160 state); 161 } else { 162 state->enable = false; 163 drm_dbg_atomic(crtc->dev, 164 "Set [NOMODE] for [CRTC:%d:%s] state %p\n", 165 crtc->base.id, crtc->name, state); 166 } 167 168 return 0; 169 } 170 EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc); 171 172 /** 173 * drm_atomic_set_crtc_for_plane - set CRTC for plane 174 * @plane_state: the plane whose incoming state to update 175 * @crtc: CRTC to use for the plane 176 * 177 * Changing the assigned CRTC for a plane requires us to grab the lock and state 178 * for the new CRTC, as needed. This function takes care of all these details 179 * besides updating the pointer in the state object itself. 180 * 181 * Returns: 182 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK 183 * then the w/w mutex code has detected a deadlock and the entire atomic 184 * sequence must be restarted. All other errors are fatal. 185 */ 186 int 187 drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state, 188 struct drm_crtc *crtc) 189 { 190 struct drm_plane *plane = plane_state->plane; 191 struct drm_crtc_state *crtc_state; 192 /* Nothing to do for same crtc*/ 193 if (plane_state->crtc == crtc) 194 return 0; 195 if (plane_state->crtc) { 196 crtc_state = drm_atomic_get_crtc_state(plane_state->state, 197 plane_state->crtc); 198 if (WARN_ON(IS_ERR(crtc_state))) 199 return PTR_ERR(crtc_state); 200 201 crtc_state->plane_mask &= ~drm_plane_mask(plane); 202 } 203 204 plane_state->crtc = crtc; 205 206 if (crtc) { 207 crtc_state = drm_atomic_get_crtc_state(plane_state->state, 208 crtc); 209 if (IS_ERR(crtc_state)) 210 return PTR_ERR(crtc_state); 211 crtc_state->plane_mask |= drm_plane_mask(plane); 212 } 213 214 if (crtc) 215 drm_dbg_atomic(plane->dev, 216 "Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n", 217 plane->base.id, plane->name, plane_state, 218 crtc->base.id, crtc->name); 219 else 220 drm_dbg_atomic(plane->dev, 221 "Link [PLANE:%d:%s] state %p to [NOCRTC]\n", 222 plane->base.id, plane->name, plane_state); 223 224 return 0; 225 } 226 EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane); 227 228 /** 229 * drm_atomic_set_fb_for_plane - set framebuffer for plane 230 * @plane_state: atomic state object for the plane 231 * @fb: fb to use for the plane 232 * 233 * Changing the assigned framebuffer for a plane requires us to grab a reference 234 * to the new fb and drop the reference to the old fb, if there is one. This 235 * function takes care of all these details besides updating the pointer in the 236 * state object itself. 237 */ 238 void 239 drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state, 240 struct drm_framebuffer *fb) 241 { 242 struct drm_plane *plane = plane_state->plane; 243 244 if (fb) 245 drm_dbg_atomic(plane->dev, 246 "Set [FB:%d] for [PLANE:%d:%s] state %p\n", 247 fb->base.id, plane->base.id, plane->name, 248 plane_state); 249 else 250 drm_dbg_atomic(plane->dev, 251 "Set [NOFB] for [PLANE:%d:%s] state %p\n", 252 plane->base.id, plane->name, plane_state); 253 254 drm_framebuffer_assign(&plane_state->fb, fb); 255 } 256 EXPORT_SYMBOL(drm_atomic_set_fb_for_plane); 257 258 /** 259 * drm_atomic_set_crtc_for_connector - set CRTC for connector 260 * @conn_state: atomic state object for the connector 261 * @crtc: CRTC to use for the connector 262 * 263 * Changing the assigned CRTC for a connector requires us to grab the lock and 264 * state for the new CRTC, as needed. This function takes care of all these 265 * details besides updating the pointer in the state object itself. 266 * 267 * Returns: 268 * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK 269 * then the w/w mutex code has detected a deadlock and the entire atomic 270 * sequence must be restarted. All other errors are fatal. 271 */ 272 int 273 drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state, 274 struct drm_crtc *crtc) 275 { 276 struct drm_connector *connector = conn_state->connector; 277 struct drm_crtc_state *crtc_state; 278 279 if (conn_state->crtc == crtc) 280 return 0; 281 282 if (conn_state->crtc) { 283 crtc_state = drm_atomic_get_new_crtc_state(conn_state->state, 284 conn_state->crtc); 285 286 crtc_state->connector_mask &= 287 ~drm_connector_mask(conn_state->connector); 288 289 drm_connector_put(conn_state->connector); 290 conn_state->crtc = NULL; 291 } 292 293 if (crtc) { 294 crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc); 295 if (IS_ERR(crtc_state)) 296 return PTR_ERR(crtc_state); 297 298 crtc_state->connector_mask |= 299 drm_connector_mask(conn_state->connector); 300 301 drm_connector_get(conn_state->connector); 302 conn_state->crtc = crtc; 303 304 drm_dbg_atomic(connector->dev, 305 "Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n", 306 connector->base.id, connector->name, 307 conn_state, crtc->base.id, crtc->name); 308 } else { 309 drm_dbg_atomic(connector->dev, 310 "Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n", 311 connector->base.id, connector->name, 312 conn_state); 313 } 314 315 return 0; 316 } 317 EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector); 318 319 static void set_out_fence_for_crtc(struct drm_atomic_state *state, 320 struct drm_crtc *crtc, s32 __user *fence_ptr) 321 { 322 state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr; 323 } 324 325 static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state, 326 struct drm_crtc *crtc) 327 { 328 s32 __user *fence_ptr; 329 330 fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr; 331 state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL; 332 333 return fence_ptr; 334 } 335 336 static int set_out_fence_for_connector(struct drm_atomic_state *state, 337 struct drm_connector *connector, 338 s32 __user *fence_ptr) 339 { 340 unsigned int index = drm_connector_index(connector); 341 342 if (!fence_ptr) 343 return 0; 344 345 if (put_user(-1, fence_ptr)) 346 return -EFAULT; 347 348 state->connectors[index].out_fence_ptr = fence_ptr; 349 350 return 0; 351 } 352 353 static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state, 354 struct drm_connector *connector) 355 { 356 unsigned int index = drm_connector_index(connector); 357 s32 __user *fence_ptr; 358 359 fence_ptr = state->connectors[index].out_fence_ptr; 360 state->connectors[index].out_fence_ptr = NULL; 361 362 return fence_ptr; 363 } 364 365 static int 366 drm_atomic_replace_property_blob_from_id(struct drm_device *dev, 367 struct drm_property_blob **blob, 368 uint64_t blob_id, 369 ssize_t expected_size, 370 ssize_t expected_elem_size, 371 bool *replaced) 372 { 373 struct drm_property_blob *new_blob = NULL; 374 375 if (blob_id != 0) { 376 new_blob = drm_property_lookup_blob(dev, blob_id); 377 if (new_blob == NULL) 378 return -EINVAL; 379 380 if (expected_size > 0 && 381 new_blob->length != expected_size) { 382 drm_property_blob_put(new_blob); 383 return -EINVAL; 384 } 385 if (expected_elem_size > 0 && 386 new_blob->length % expected_elem_size != 0) { 387 drm_property_blob_put(new_blob); 388 return -EINVAL; 389 } 390 } 391 392 *replaced |= drm_property_replace_blob(blob, new_blob); 393 drm_property_blob_put(new_blob); 394 395 return 0; 396 } 397 398 static int drm_atomic_crtc_set_property(struct drm_crtc *crtc, 399 struct drm_crtc_state *state, struct drm_property *property, 400 uint64_t val) 401 { 402 struct drm_device *dev = crtc->dev; 403 struct drm_mode_config *config = &dev->mode_config; 404 bool replaced = false; 405 int ret; 406 407 if (property == config->prop_active) 408 state->active = val; 409 else if (property == config->prop_mode_id) { 410 struct drm_property_blob *mode = 411 drm_property_lookup_blob(dev, val); 412 ret = drm_atomic_set_mode_prop_for_crtc(state, mode); 413 drm_property_blob_put(mode); 414 return ret; 415 } else if (property == config->prop_vrr_enabled) { 416 state->vrr_enabled = val; 417 } else if (property == config->degamma_lut_property) { 418 ret = drm_atomic_replace_property_blob_from_id(dev, 419 &state->degamma_lut, 420 val, 421 -1, sizeof(struct drm_color_lut), 422 &replaced); 423 state->color_mgmt_changed |= replaced; 424 return ret; 425 } else if (property == config->ctm_property) { 426 ret = drm_atomic_replace_property_blob_from_id(dev, 427 &state->ctm, 428 val, 429 sizeof(struct drm_color_ctm), -1, 430 &replaced); 431 state->color_mgmt_changed |= replaced; 432 return ret; 433 } else if (property == config->gamma_lut_property) { 434 ret = drm_atomic_replace_property_blob_from_id(dev, 435 &state->gamma_lut, 436 val, 437 -1, sizeof(struct drm_color_lut), 438 &replaced); 439 state->color_mgmt_changed |= replaced; 440 return ret; 441 } else if (property == config->prop_out_fence_ptr) { 442 s32 __user *fence_ptr = u64_to_user_ptr(val); 443 444 if (!fence_ptr) 445 return 0; 446 447 if (put_user(-1, fence_ptr)) 448 return -EFAULT; 449 450 set_out_fence_for_crtc(state->state, crtc, fence_ptr); 451 } else if (property == crtc->scaling_filter_property) { 452 state->scaling_filter = val; 453 } else if (crtc->funcs->atomic_set_property) { 454 return crtc->funcs->atomic_set_property(crtc, state, property, val); 455 } else { 456 drm_dbg_atomic(crtc->dev, 457 "[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n", 458 crtc->base.id, crtc->name, 459 property->base.id, property->name); 460 return -EINVAL; 461 } 462 463 return 0; 464 } 465 466 static int 467 drm_atomic_crtc_get_property(struct drm_crtc *crtc, 468 const struct drm_crtc_state *state, 469 struct drm_property *property, uint64_t *val) 470 { 471 struct drm_device *dev = crtc->dev; 472 struct drm_mode_config *config = &dev->mode_config; 473 474 if (property == config->prop_active) 475 *val = drm_atomic_crtc_effectively_active(state); 476 else if (property == config->prop_mode_id) 477 *val = (state->mode_blob) ? state->mode_blob->base.id : 0; 478 else if (property == config->prop_vrr_enabled) 479 *val = state->vrr_enabled; 480 else if (property == config->degamma_lut_property) 481 *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; 482 else if (property == config->ctm_property) 483 *val = (state->ctm) ? state->ctm->base.id : 0; 484 else if (property == config->gamma_lut_property) 485 *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; 486 else if (property == config->prop_out_fence_ptr) 487 *val = 0; 488 else if (property == crtc->scaling_filter_property) 489 *val = state->scaling_filter; 490 else if (crtc->funcs->atomic_get_property) 491 return crtc->funcs->atomic_get_property(crtc, state, property, val); 492 else 493 return -EINVAL; 494 495 return 0; 496 } 497 498 static int drm_atomic_plane_set_property(struct drm_plane *plane, 499 struct drm_plane_state *state, struct drm_file *file_priv, 500 struct drm_property *property, uint64_t val) 501 { 502 struct drm_device *dev = plane->dev; 503 struct drm_mode_config *config = &dev->mode_config; 504 bool replaced = false; 505 int ret; 506 507 if (property == config->prop_fb_id) { 508 struct drm_framebuffer *fb; 509 510 fb = drm_framebuffer_lookup(dev, file_priv, val); 511 drm_atomic_set_fb_for_plane(state, fb); 512 if (fb) 513 drm_framebuffer_put(fb); 514 } else if (property == config->prop_in_fence_fd) { 515 if (state->fence) 516 return -EINVAL; 517 518 if (U642I64(val) == -1) 519 return 0; 520 521 state->fence = sync_file_get_fence(val); 522 if (!state->fence) 523 return -EINVAL; 524 525 } else if (property == config->prop_crtc_id) { 526 struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val); 527 528 if (val && !crtc) 529 return -EACCES; 530 return drm_atomic_set_crtc_for_plane(state, crtc); 531 } else if (property == config->prop_crtc_x) { 532 state->crtc_x = U642I64(val); 533 } else if (property == config->prop_crtc_y) { 534 state->crtc_y = U642I64(val); 535 } else if (property == config->prop_crtc_w) { 536 state->crtc_w = val; 537 } else if (property == config->prop_crtc_h) { 538 state->crtc_h = val; 539 } else if (property == config->prop_src_x) { 540 state->src_x = val; 541 } else if (property == config->prop_src_y) { 542 state->src_y = val; 543 } else if (property == config->prop_src_w) { 544 state->src_w = val; 545 } else if (property == config->prop_src_h) { 546 state->src_h = val; 547 } else if (property == plane->alpha_property) { 548 state->alpha = val; 549 } else if (property == plane->blend_mode_property) { 550 state->pixel_blend_mode = val; 551 } else if (property == plane->rotation_property) { 552 if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) { 553 drm_dbg_atomic(plane->dev, 554 "[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n", 555 plane->base.id, plane->name, val); 556 return -EINVAL; 557 } 558 state->rotation = val; 559 } else if (property == plane->zpos_property) { 560 state->zpos = val; 561 } else if (property == plane->color_encoding_property) { 562 state->color_encoding = val; 563 } else if (property == plane->color_range_property) { 564 state->color_range = val; 565 } else if (property == config->prop_fb_damage_clips) { 566 ret = drm_atomic_replace_property_blob_from_id(dev, 567 &state->fb_damage_clips, 568 val, 569 -1, 570 sizeof(struct drm_rect), 571 &replaced); 572 return ret; 573 } else if (property == plane->scaling_filter_property) { 574 state->scaling_filter = val; 575 } else if (plane->funcs->atomic_set_property) { 576 return plane->funcs->atomic_set_property(plane, state, 577 property, val); 578 } else { 579 drm_dbg_atomic(plane->dev, 580 "[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n", 581 plane->base.id, plane->name, 582 property->base.id, property->name); 583 return -EINVAL; 584 } 585 586 return 0; 587 } 588 589 static int 590 drm_atomic_plane_get_property(struct drm_plane *plane, 591 const struct drm_plane_state *state, 592 struct drm_property *property, uint64_t *val) 593 { 594 struct drm_device *dev = plane->dev; 595 struct drm_mode_config *config = &dev->mode_config; 596 597 if (property == config->prop_fb_id) { 598 *val = (state->fb) ? state->fb->base.id : 0; 599 } else if (property == config->prop_in_fence_fd) { 600 *val = -1; 601 } else if (property == config->prop_crtc_id) { 602 *val = (state->crtc) ? state->crtc->base.id : 0; 603 } else if (property == config->prop_crtc_x) { 604 *val = I642U64(state->crtc_x); 605 } else if (property == config->prop_crtc_y) { 606 *val = I642U64(state->crtc_y); 607 } else if (property == config->prop_crtc_w) { 608 *val = state->crtc_w; 609 } else if (property == config->prop_crtc_h) { 610 *val = state->crtc_h; 611 } else if (property == config->prop_src_x) { 612 *val = state->src_x; 613 } else if (property == config->prop_src_y) { 614 *val = state->src_y; 615 } else if (property == config->prop_src_w) { 616 *val = state->src_w; 617 } else if (property == config->prop_src_h) { 618 *val = state->src_h; 619 } else if (property == plane->alpha_property) { 620 *val = state->alpha; 621 } else if (property == plane->blend_mode_property) { 622 *val = state->pixel_blend_mode; 623 } else if (property == plane->rotation_property) { 624 *val = state->rotation; 625 } else if (property == plane->zpos_property) { 626 *val = state->zpos; 627 } else if (property == plane->color_encoding_property) { 628 *val = state->color_encoding; 629 } else if (property == plane->color_range_property) { 630 *val = state->color_range; 631 } else if (property == config->prop_fb_damage_clips) { 632 *val = (state->fb_damage_clips) ? 633 state->fb_damage_clips->base.id : 0; 634 } else if (property == plane->scaling_filter_property) { 635 *val = state->scaling_filter; 636 } else if (plane->funcs->atomic_get_property) { 637 return plane->funcs->atomic_get_property(plane, state, property, val); 638 } else { 639 return -EINVAL; 640 } 641 642 return 0; 643 } 644 645 static int drm_atomic_set_writeback_fb_for_connector( 646 struct drm_connector_state *conn_state, 647 struct drm_framebuffer *fb) 648 { 649 int ret; 650 struct drm_connector *conn = conn_state->connector; 651 652 ret = drm_writeback_set_fb(conn_state, fb); 653 if (ret < 0) 654 return ret; 655 656 if (fb) 657 drm_dbg_atomic(conn->dev, 658 "Set [FB:%d] for connector state %p\n", 659 fb->base.id, conn_state); 660 else 661 drm_dbg_atomic(conn->dev, 662 "Set [NOFB] for connector state %p\n", 663 conn_state); 664 665 return 0; 666 } 667 668 static int drm_atomic_connector_set_property(struct drm_connector *connector, 669 struct drm_connector_state *state, struct drm_file *file_priv, 670 struct drm_property *property, uint64_t val) 671 { 672 struct drm_device *dev = connector->dev; 673 struct drm_mode_config *config = &dev->mode_config; 674 bool replaced = false; 675 int ret; 676 677 if (property == config->prop_crtc_id) { 678 struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val); 679 680 if (val && !crtc) 681 return -EACCES; 682 return drm_atomic_set_crtc_for_connector(state, crtc); 683 } else if (property == config->dpms_property) { 684 /* setting DPMS property requires special handling, which 685 * is done in legacy setprop path for us. Disallow (for 686 * now?) atomic writes to DPMS property: 687 */ 688 return -EINVAL; 689 } else if (property == config->tv_select_subconnector_property) { 690 state->tv.select_subconnector = val; 691 } else if (property == config->tv_subconnector_property) { 692 state->tv.subconnector = val; 693 } else if (property == config->tv_left_margin_property) { 694 state->tv.margins.left = val; 695 } else if (property == config->tv_right_margin_property) { 696 state->tv.margins.right = val; 697 } else if (property == config->tv_top_margin_property) { 698 state->tv.margins.top = val; 699 } else if (property == config->tv_bottom_margin_property) { 700 state->tv.margins.bottom = val; 701 } else if (property == config->tv_mode_property) { 702 state->tv.mode = val; 703 } else if (property == config->tv_brightness_property) { 704 state->tv.brightness = val; 705 } else if (property == config->tv_contrast_property) { 706 state->tv.contrast = val; 707 } else if (property == config->tv_flicker_reduction_property) { 708 state->tv.flicker_reduction = val; 709 } else if (property == config->tv_overscan_property) { 710 state->tv.overscan = val; 711 } else if (property == config->tv_saturation_property) { 712 state->tv.saturation = val; 713 } else if (property == config->tv_hue_property) { 714 state->tv.hue = val; 715 } else if (property == config->link_status_property) { 716 /* Never downgrade from GOOD to BAD on userspace's request here, 717 * only hw issues can do that. 718 * 719 * For an atomic property the userspace doesn't need to be able 720 * to understand all the properties, but needs to be able to 721 * restore the state it wants on VT switch. So if the userspace 722 * tries to change the link_status from GOOD to BAD, driver 723 * silently rejects it and returns a 0. This prevents userspace 724 * from accidentally breaking the display when it restores the 725 * state. 726 */ 727 if (state->link_status != DRM_LINK_STATUS_GOOD) 728 state->link_status = val; 729 } else if (property == config->hdr_output_metadata_property) { 730 ret = drm_atomic_replace_property_blob_from_id(dev, 731 &state->hdr_output_metadata, 732 val, 733 sizeof(struct hdr_output_metadata), -1, 734 &replaced); 735 return ret; 736 } else if (property == config->aspect_ratio_property) { 737 state->picture_aspect_ratio = val; 738 } else if (property == config->content_type_property) { 739 state->content_type = val; 740 } else if (property == connector->scaling_mode_property) { 741 state->scaling_mode = val; 742 } else if (property == config->content_protection_property) { 743 if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) { 744 drm_dbg_kms(dev, "only drivers can set CP Enabled\n"); 745 return -EINVAL; 746 } 747 state->content_protection = val; 748 } else if (property == config->hdcp_content_type_property) { 749 state->hdcp_content_type = val; 750 } else if (property == connector->colorspace_property) { 751 state->colorspace = val; 752 } else if (property == config->writeback_fb_id_property) { 753 struct drm_framebuffer *fb; 754 int ret; 755 756 fb = drm_framebuffer_lookup(dev, file_priv, val); 757 ret = drm_atomic_set_writeback_fb_for_connector(state, fb); 758 if (fb) 759 drm_framebuffer_put(fb); 760 return ret; 761 } else if (property == config->writeback_out_fence_ptr_property) { 762 s32 __user *fence_ptr = u64_to_user_ptr(val); 763 764 return set_out_fence_for_connector(state->state, connector, 765 fence_ptr); 766 } else if (property == connector->max_bpc_property) { 767 state->max_requested_bpc = val; 768 } else if (property == connector->privacy_screen_sw_state_property) { 769 state->privacy_screen_sw_state = val; 770 } else if (connector->funcs->atomic_set_property) { 771 return connector->funcs->atomic_set_property(connector, 772 state, property, val); 773 } else { 774 drm_dbg_atomic(connector->dev, 775 "[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n", 776 connector->base.id, connector->name, 777 property->base.id, property->name); 778 return -EINVAL; 779 } 780 781 return 0; 782 } 783 784 static int 785 drm_atomic_connector_get_property(struct drm_connector *connector, 786 const struct drm_connector_state *state, 787 struct drm_property *property, uint64_t *val) 788 { 789 struct drm_device *dev = connector->dev; 790 struct drm_mode_config *config = &dev->mode_config; 791 792 if (property == config->prop_crtc_id) { 793 *val = (state->crtc) ? state->crtc->base.id : 0; 794 } else if (property == config->dpms_property) { 795 if (state->crtc && state->crtc->state->self_refresh_active) 796 *val = DRM_MODE_DPMS_ON; 797 else 798 *val = connector->dpms; 799 } else if (property == config->tv_select_subconnector_property) { 800 *val = state->tv.select_subconnector; 801 } else if (property == config->tv_subconnector_property) { 802 *val = state->tv.subconnector; 803 } else if (property == config->tv_left_margin_property) { 804 *val = state->tv.margins.left; 805 } else if (property == config->tv_right_margin_property) { 806 *val = state->tv.margins.right; 807 } else if (property == config->tv_top_margin_property) { 808 *val = state->tv.margins.top; 809 } else if (property == config->tv_bottom_margin_property) { 810 *val = state->tv.margins.bottom; 811 } else if (property == config->tv_mode_property) { 812 *val = state->tv.mode; 813 } else if (property == config->tv_brightness_property) { 814 *val = state->tv.brightness; 815 } else if (property == config->tv_contrast_property) { 816 *val = state->tv.contrast; 817 } else if (property == config->tv_flicker_reduction_property) { 818 *val = state->tv.flicker_reduction; 819 } else if (property == config->tv_overscan_property) { 820 *val = state->tv.overscan; 821 } else if (property == config->tv_saturation_property) { 822 *val = state->tv.saturation; 823 } else if (property == config->tv_hue_property) { 824 *val = state->tv.hue; 825 } else if (property == config->link_status_property) { 826 *val = state->link_status; 827 } else if (property == config->aspect_ratio_property) { 828 *val = state->picture_aspect_ratio; 829 } else if (property == config->content_type_property) { 830 *val = state->content_type; 831 } else if (property == connector->colorspace_property) { 832 *val = state->colorspace; 833 } else if (property == connector->scaling_mode_property) { 834 *val = state->scaling_mode; 835 } else if (property == config->hdr_output_metadata_property) { 836 *val = state->hdr_output_metadata ? 837 state->hdr_output_metadata->base.id : 0; 838 } else if (property == config->content_protection_property) { 839 *val = state->content_protection; 840 } else if (property == config->hdcp_content_type_property) { 841 *val = state->hdcp_content_type; 842 } else if (property == config->writeback_fb_id_property) { 843 /* Writeback framebuffer is one-shot, write and forget */ 844 *val = 0; 845 } else if (property == config->writeback_out_fence_ptr_property) { 846 *val = 0; 847 } else if (property == connector->max_bpc_property) { 848 *val = state->max_requested_bpc; 849 } else if (property == connector->privacy_screen_sw_state_property) { 850 *val = state->privacy_screen_sw_state; 851 } else if (connector->funcs->atomic_get_property) { 852 return connector->funcs->atomic_get_property(connector, 853 state, property, val); 854 } else { 855 return -EINVAL; 856 } 857 858 return 0; 859 } 860 861 int drm_atomic_get_property(struct drm_mode_object *obj, 862 struct drm_property *property, uint64_t *val) 863 { 864 struct drm_device *dev = property->dev; 865 int ret; 866 867 switch (obj->type) { 868 case DRM_MODE_OBJECT_CONNECTOR: { 869 struct drm_connector *connector = obj_to_connector(obj); 870 871 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); 872 ret = drm_atomic_connector_get_property(connector, 873 connector->state, property, val); 874 break; 875 } 876 case DRM_MODE_OBJECT_CRTC: { 877 struct drm_crtc *crtc = obj_to_crtc(obj); 878 879 WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); 880 ret = drm_atomic_crtc_get_property(crtc, 881 crtc->state, property, val); 882 break; 883 } 884 case DRM_MODE_OBJECT_PLANE: { 885 struct drm_plane *plane = obj_to_plane(obj); 886 887 WARN_ON(!drm_modeset_is_locked(&plane->mutex)); 888 ret = drm_atomic_plane_get_property(plane, 889 plane->state, property, val); 890 break; 891 } 892 default: 893 ret = -EINVAL; 894 break; 895 } 896 897 return ret; 898 } 899 900 /* 901 * The big monster ioctl 902 */ 903 904 static struct drm_pending_vblank_event *create_vblank_event( 905 struct drm_crtc *crtc, uint64_t user_data) 906 { 907 struct drm_pending_vblank_event *e = NULL; 908 909 e = kzalloc(sizeof *e, GFP_KERNEL); 910 if (!e) 911 return NULL; 912 913 e->event.base.type = DRM_EVENT_FLIP_COMPLETE; 914 e->event.base.length = sizeof(e->event); 915 e->event.vbl.crtc_id = crtc->base.id; 916 e->event.vbl.user_data = user_data; 917 918 return e; 919 } 920 921 int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state, 922 struct drm_connector *connector, 923 int mode) 924 { 925 struct drm_connector *tmp_connector; 926 struct drm_connector_state *new_conn_state; 927 struct drm_crtc *crtc; 928 struct drm_crtc_state *crtc_state; 929 int i, ret, old_mode = connector->dpms; 930 bool active = false; 931 932 ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex, 933 state->acquire_ctx); 934 if (ret) 935 return ret; 936 937 if (mode != DRM_MODE_DPMS_ON) 938 mode = DRM_MODE_DPMS_OFF; 939 connector->dpms = mode; 940 941 crtc = connector->state->crtc; 942 if (!crtc) 943 goto out; 944 ret = drm_atomic_add_affected_connectors(state, crtc); 945 if (ret) 946 goto out; 947 948 crtc_state = drm_atomic_get_crtc_state(state, crtc); 949 if (IS_ERR(crtc_state)) { 950 ret = PTR_ERR(crtc_state); 951 goto out; 952 } 953 954 for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) { 955 if (new_conn_state->crtc != crtc) 956 continue; 957 if (tmp_connector->dpms == DRM_MODE_DPMS_ON) { 958 active = true; 959 break; 960 } 961 } 962 963 crtc_state->active = active; 964 ret = drm_atomic_commit(state); 965 out: 966 if (ret != 0) 967 connector->dpms = old_mode; 968 return ret; 969 } 970 971 int drm_atomic_set_property(struct drm_atomic_state *state, 972 struct drm_file *file_priv, 973 struct drm_mode_object *obj, 974 struct drm_property *prop, 975 uint64_t prop_value) 976 { 977 struct drm_mode_object *ref; 978 int ret; 979 980 if (!drm_property_change_valid_get(prop, prop_value, &ref)) 981 return -EINVAL; 982 983 switch (obj->type) { 984 case DRM_MODE_OBJECT_CONNECTOR: { 985 struct drm_connector *connector = obj_to_connector(obj); 986 struct drm_connector_state *connector_state; 987 988 connector_state = drm_atomic_get_connector_state(state, connector); 989 if (IS_ERR(connector_state)) { 990 ret = PTR_ERR(connector_state); 991 break; 992 } 993 994 ret = drm_atomic_connector_set_property(connector, 995 connector_state, file_priv, 996 prop, prop_value); 997 break; 998 } 999 case DRM_MODE_OBJECT_CRTC: { 1000 struct drm_crtc *crtc = obj_to_crtc(obj); 1001 struct drm_crtc_state *crtc_state; 1002 1003 crtc_state = drm_atomic_get_crtc_state(state, crtc); 1004 if (IS_ERR(crtc_state)) { 1005 ret = PTR_ERR(crtc_state); 1006 break; 1007 } 1008 1009 ret = drm_atomic_crtc_set_property(crtc, 1010 crtc_state, prop, prop_value); 1011 break; 1012 } 1013 case DRM_MODE_OBJECT_PLANE: { 1014 struct drm_plane *plane = obj_to_plane(obj); 1015 struct drm_plane_state *plane_state; 1016 1017 plane_state = drm_atomic_get_plane_state(state, plane); 1018 if (IS_ERR(plane_state)) { 1019 ret = PTR_ERR(plane_state); 1020 break; 1021 } 1022 1023 ret = drm_atomic_plane_set_property(plane, 1024 plane_state, file_priv, 1025 prop, prop_value); 1026 break; 1027 } 1028 default: 1029 ret = -EINVAL; 1030 break; 1031 } 1032 1033 drm_property_change_valid_put(prop, ref); 1034 return ret; 1035 } 1036 1037 /** 1038 * DOC: explicit fencing properties 1039 * 1040 * Explicit fencing allows userspace to control the buffer synchronization 1041 * between devices. A Fence or a group of fences are transferred to/from 1042 * userspace using Sync File fds and there are two DRM properties for that. 1043 * IN_FENCE_FD on each DRM Plane to send fences to the kernel and 1044 * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel. 1045 * 1046 * As a contrast, with implicit fencing the kernel keeps track of any 1047 * ongoing rendering, and automatically ensures that the atomic update waits 1048 * for any pending rendering to complete. This is usually tracked in &struct 1049 * dma_resv which can also contain mandatory kernel fences. Implicit syncing 1050 * is how Linux traditionally worked (e.g. DRI2/3 on X.org), whereas explicit 1051 * fencing is what Android wants. 1052 * 1053 * "IN_FENCE_FD”: 1054 * Use this property to pass a fence that DRM should wait on before 1055 * proceeding with the Atomic Commit request and show the framebuffer for 1056 * the plane on the screen. The fence can be either a normal fence or a 1057 * merged one, the sync_file framework will handle both cases and use a 1058 * fence_array if a merged fence is received. Passing -1 here means no 1059 * fences to wait on. 1060 * 1061 * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag 1062 * it will only check if the Sync File is a valid one. 1063 * 1064 * On the driver side the fence is stored on the @fence parameter of 1065 * &struct drm_plane_state. Drivers which also support implicit fencing 1066 * should extract the implicit fence using drm_gem_plane_helper_prepare_fb(), 1067 * to make sure there's consistent behaviour between drivers in precedence 1068 * of implicit vs. explicit fencing. 1069 * 1070 * "OUT_FENCE_PTR”: 1071 * Use this property to pass a file descriptor pointer to DRM. Once the 1072 * Atomic Commit request call returns OUT_FENCE_PTR will be filled with 1073 * the file descriptor number of a Sync File. This Sync File contains the 1074 * CRTC fence that will be signaled when all framebuffers present on the 1075 * Atomic Commit * request for that given CRTC are scanned out on the 1076 * screen. 1077 * 1078 * The Atomic Commit request fails if a invalid pointer is passed. If the 1079 * Atomic Commit request fails for any other reason the out fence fd 1080 * returned will be -1. On a Atomic Commit with the 1081 * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1. 1082 * 1083 * Note that out-fences don't have a special interface to drivers and are 1084 * internally represented by a &struct drm_pending_vblank_event in struct 1085 * &drm_crtc_state, which is also used by the nonblocking atomic commit 1086 * helpers and for the DRM event handling for existing userspace. 1087 */ 1088 1089 struct drm_out_fence_state { 1090 s32 __user *out_fence_ptr; 1091 struct sync_file *sync_file; 1092 int fd; 1093 }; 1094 1095 static int setup_out_fence(struct drm_out_fence_state *fence_state, 1096 struct dma_fence *fence) 1097 { 1098 fence_state->fd = get_unused_fd_flags(O_CLOEXEC); 1099 if (fence_state->fd < 0) 1100 return fence_state->fd; 1101 1102 if (put_user(fence_state->fd, fence_state->out_fence_ptr)) 1103 return -EFAULT; 1104 1105 fence_state->sync_file = sync_file_create(fence); 1106 if (!fence_state->sync_file) 1107 return -ENOMEM; 1108 1109 return 0; 1110 } 1111 1112 static int prepare_signaling(struct drm_device *dev, 1113 struct drm_atomic_state *state, 1114 struct drm_mode_atomic *arg, 1115 struct drm_file *file_priv, 1116 struct drm_out_fence_state **fence_state, 1117 unsigned int *num_fences) 1118 { 1119 struct drm_crtc *crtc; 1120 struct drm_crtc_state *crtc_state; 1121 struct drm_connector *conn; 1122 struct drm_connector_state *conn_state; 1123 int i, c = 0, ret; 1124 1125 if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) 1126 return 0; 1127 1128 for_each_new_crtc_in_state(state, crtc, crtc_state, i) { 1129 s32 __user *fence_ptr; 1130 1131 fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc); 1132 1133 if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) { 1134 struct drm_pending_vblank_event *e; 1135 1136 e = create_vblank_event(crtc, arg->user_data); 1137 if (!e) 1138 return -ENOMEM; 1139 1140 crtc_state->event = e; 1141 } 1142 1143 if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { 1144 struct drm_pending_vblank_event *e = crtc_state->event; 1145 1146 if (!file_priv) 1147 continue; 1148 1149 ret = drm_event_reserve_init(dev, file_priv, &e->base, 1150 &e->event.base); 1151 if (ret) { 1152 kfree(e); 1153 crtc_state->event = NULL; 1154 return ret; 1155 } 1156 } 1157 1158 if (fence_ptr) { 1159 struct dma_fence *fence; 1160 struct drm_out_fence_state *f; 1161 1162 f = krealloc(*fence_state, sizeof(**fence_state) * 1163 (*num_fences + 1), GFP_KERNEL); 1164 if (!f) 1165 return -ENOMEM; 1166 1167 memset(&f[*num_fences], 0, sizeof(*f)); 1168 1169 f[*num_fences].out_fence_ptr = fence_ptr; 1170 *fence_state = f; 1171 1172 fence = drm_crtc_create_fence(crtc); 1173 if (!fence) 1174 return -ENOMEM; 1175 1176 ret = setup_out_fence(&f[(*num_fences)++], fence); 1177 if (ret) { 1178 dma_fence_put(fence); 1179 return ret; 1180 } 1181 1182 crtc_state->event->base.fence = fence; 1183 } 1184 1185 c++; 1186 } 1187 1188 for_each_new_connector_in_state(state, conn, conn_state, i) { 1189 struct drm_writeback_connector *wb_conn; 1190 struct drm_out_fence_state *f; 1191 struct dma_fence *fence; 1192 s32 __user *fence_ptr; 1193 1194 if (!conn_state->writeback_job) 1195 continue; 1196 1197 fence_ptr = get_out_fence_for_connector(state, conn); 1198 if (!fence_ptr) 1199 continue; 1200 1201 f = krealloc(*fence_state, sizeof(**fence_state) * 1202 (*num_fences + 1), GFP_KERNEL); 1203 if (!f) 1204 return -ENOMEM; 1205 1206 memset(&f[*num_fences], 0, sizeof(*f)); 1207 1208 f[*num_fences].out_fence_ptr = fence_ptr; 1209 *fence_state = f; 1210 1211 wb_conn = drm_connector_to_writeback(conn); 1212 fence = drm_writeback_get_out_fence(wb_conn); 1213 if (!fence) 1214 return -ENOMEM; 1215 1216 ret = setup_out_fence(&f[(*num_fences)++], fence); 1217 if (ret) { 1218 dma_fence_put(fence); 1219 return ret; 1220 } 1221 1222 conn_state->writeback_job->out_fence = fence; 1223 } 1224 1225 /* 1226 * Having this flag means user mode pends on event which will never 1227 * reach due to lack of at least one CRTC for signaling 1228 */ 1229 if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) 1230 return -EINVAL; 1231 1232 return 0; 1233 } 1234 1235 static void complete_signaling(struct drm_device *dev, 1236 struct drm_atomic_state *state, 1237 struct drm_out_fence_state *fence_state, 1238 unsigned int num_fences, 1239 bool install_fds) 1240 { 1241 struct drm_crtc *crtc; 1242 struct drm_crtc_state *crtc_state; 1243 int i; 1244 1245 if (install_fds) { 1246 for (i = 0; i < num_fences; i++) 1247 fd_install(fence_state[i].fd, 1248 fence_state[i].sync_file->file); 1249 1250 kfree(fence_state); 1251 return; 1252 } 1253 1254 for_each_new_crtc_in_state(state, crtc, crtc_state, i) { 1255 struct drm_pending_vblank_event *event = crtc_state->event; 1256 /* 1257 * Free the allocated event. drm_atomic_helper_setup_commit 1258 * can allocate an event too, so only free it if it's ours 1259 * to prevent a double free in drm_atomic_state_clear. 1260 */ 1261 if (event && (event->base.fence || event->base.file_priv)) { 1262 drm_event_cancel_free(dev, &event->base); 1263 crtc_state->event = NULL; 1264 } 1265 } 1266 1267 if (!fence_state) 1268 return; 1269 1270 for (i = 0; i < num_fences; i++) { 1271 if (fence_state[i].sync_file) 1272 fput(fence_state[i].sync_file->file); 1273 if (fence_state[i].fd >= 0) 1274 put_unused_fd(fence_state[i].fd); 1275 1276 /* If this fails log error to the user */ 1277 if (fence_state[i].out_fence_ptr && 1278 put_user(-1, fence_state[i].out_fence_ptr)) 1279 drm_dbg_atomic(dev, "Couldn't clear out_fence_ptr\n"); 1280 } 1281 1282 kfree(fence_state); 1283 } 1284 1285 int drm_mode_atomic_ioctl(struct drm_device *dev, 1286 void *data, struct drm_file *file_priv) 1287 { 1288 struct drm_mode_atomic *arg = data; 1289 uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); 1290 uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); 1291 uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); 1292 uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); 1293 unsigned int copied_objs, copied_props; 1294 struct drm_atomic_state *state; 1295 struct drm_modeset_acquire_ctx ctx; 1296 struct drm_out_fence_state *fence_state; 1297 int ret = 0; 1298 unsigned int i, j, num_fences; 1299 1300 /* disallow for drivers not supporting atomic: */ 1301 if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) 1302 return -EOPNOTSUPP; 1303 1304 /* disallow for userspace that has not enabled atomic cap (even 1305 * though this may be a bit overkill, since legacy userspace 1306 * wouldn't know how to call this ioctl) 1307 */ 1308 if (!file_priv->atomic) { 1309 drm_dbg_atomic(dev, 1310 "commit failed: atomic cap not enabled\n"); 1311 return -EINVAL; 1312 } 1313 1314 if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) { 1315 drm_dbg_atomic(dev, "commit failed: invalid flag\n"); 1316 return -EINVAL; 1317 } 1318 1319 if (arg->reserved) { 1320 drm_dbg_atomic(dev, "commit failed: reserved field set\n"); 1321 return -EINVAL; 1322 } 1323 1324 if (arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) { 1325 drm_dbg_atomic(dev, 1326 "commit failed: invalid flag DRM_MODE_PAGE_FLIP_ASYNC\n"); 1327 return -EINVAL; 1328 } 1329 1330 /* can't test and expect an event at the same time. */ 1331 if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && 1332 (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) { 1333 drm_dbg_atomic(dev, 1334 "commit failed: page-flip event requested with test-only commit\n"); 1335 return -EINVAL; 1336 } 1337 1338 state = drm_atomic_state_alloc(dev); 1339 if (!state) 1340 return -ENOMEM; 1341 1342 drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); 1343 state->acquire_ctx = &ctx; 1344 state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); 1345 1346 retry: 1347 copied_objs = 0; 1348 copied_props = 0; 1349 fence_state = NULL; 1350 num_fences = 0; 1351 1352 for (i = 0; i < arg->count_objs; i++) { 1353 uint32_t obj_id, count_props; 1354 struct drm_mode_object *obj; 1355 1356 if (get_user(obj_id, objs_ptr + copied_objs)) { 1357 ret = -EFAULT; 1358 goto out; 1359 } 1360 1361 obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY); 1362 if (!obj) { 1363 ret = -ENOENT; 1364 goto out; 1365 } 1366 1367 if (!obj->properties) { 1368 drm_mode_object_put(obj); 1369 ret = -ENOENT; 1370 goto out; 1371 } 1372 1373 if (get_user(count_props, count_props_ptr + copied_objs)) { 1374 drm_mode_object_put(obj); 1375 ret = -EFAULT; 1376 goto out; 1377 } 1378 1379 copied_objs++; 1380 1381 for (j = 0; j < count_props; j++) { 1382 uint32_t prop_id; 1383 uint64_t prop_value; 1384 struct drm_property *prop; 1385 1386 if (get_user(prop_id, props_ptr + copied_props)) { 1387 drm_mode_object_put(obj); 1388 ret = -EFAULT; 1389 goto out; 1390 } 1391 1392 prop = drm_mode_obj_find_prop_id(obj, prop_id); 1393 if (!prop) { 1394 drm_mode_object_put(obj); 1395 ret = -ENOENT; 1396 goto out; 1397 } 1398 1399 if (copy_from_user(&prop_value, 1400 prop_values_ptr + copied_props, 1401 sizeof(prop_value))) { 1402 drm_mode_object_put(obj); 1403 ret = -EFAULT; 1404 goto out; 1405 } 1406 1407 ret = drm_atomic_set_property(state, file_priv, 1408 obj, prop, prop_value); 1409 if (ret) { 1410 drm_mode_object_put(obj); 1411 goto out; 1412 } 1413 1414 copied_props++; 1415 } 1416 1417 drm_mode_object_put(obj); 1418 } 1419 1420 ret = prepare_signaling(dev, state, arg, file_priv, &fence_state, 1421 &num_fences); 1422 if (ret) 1423 goto out; 1424 1425 if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { 1426 ret = drm_atomic_check_only(state); 1427 } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { 1428 ret = drm_atomic_nonblocking_commit(state); 1429 } else { 1430 ret = drm_atomic_commit(state); 1431 } 1432 1433 out: 1434 complete_signaling(dev, state, fence_state, num_fences, !ret); 1435 1436 if (ret == -EDEADLK) { 1437 drm_atomic_state_clear(state); 1438 ret = drm_modeset_backoff(&ctx); 1439 if (!ret) 1440 goto retry; 1441 } 1442 1443 drm_atomic_state_put(state); 1444 1445 drm_modeset_drop_locks(&ctx); 1446 drm_modeset_acquire_fini(&ctx); 1447 1448 return ret; 1449 } 1450