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