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 it's form: 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->degamma_lut_property) { 437 ret = drm_atomic_replace_property_blob_from_id(dev, 438 &state->degamma_lut, 439 val, 440 -1, sizeof(struct drm_color_lut), 441 &replaced); 442 state->color_mgmt_changed |= replaced; 443 return ret; 444 } else if (property == config->ctm_property) { 445 ret = drm_atomic_replace_property_blob_from_id(dev, 446 &state->ctm, 447 val, 448 sizeof(struct drm_color_ctm), -1, 449 &replaced); 450 state->color_mgmt_changed |= replaced; 451 return ret; 452 } else if (property == config->gamma_lut_property) { 453 ret = drm_atomic_replace_property_blob_from_id(dev, 454 &state->gamma_lut, 455 val, 456 -1, sizeof(struct drm_color_lut), 457 &replaced); 458 state->color_mgmt_changed |= replaced; 459 return ret; 460 } else if (property == config->prop_out_fence_ptr) { 461 s32 __user *fence_ptr = u64_to_user_ptr(val); 462 463 if (!fence_ptr) 464 return 0; 465 466 if (put_user(-1, fence_ptr)) 467 return -EFAULT; 468 469 set_out_fence_for_crtc(state->state, crtc, fence_ptr); 470 } else if (crtc->funcs->atomic_set_property) { 471 return crtc->funcs->atomic_set_property(crtc, state, property, val); 472 } else { 473 DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n", 474 crtc->base.id, crtc->name, 475 property->base.id, property->name); 476 return -EINVAL; 477 } 478 479 return 0; 480 } 481 482 static int 483 drm_atomic_crtc_get_property(struct drm_crtc *crtc, 484 const struct drm_crtc_state *state, 485 struct drm_property *property, uint64_t *val) 486 { 487 struct drm_device *dev = crtc->dev; 488 struct drm_mode_config *config = &dev->mode_config; 489 490 if (property == config->prop_active) 491 *val = state->active; 492 else if (property == config->prop_mode_id) 493 *val = (state->mode_blob) ? state->mode_blob->base.id : 0; 494 else if (property == config->degamma_lut_property) 495 *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0; 496 else if (property == config->ctm_property) 497 *val = (state->ctm) ? state->ctm->base.id : 0; 498 else if (property == config->gamma_lut_property) 499 *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0; 500 else if (property == config->prop_out_fence_ptr) 501 *val = 0; 502 else if (crtc->funcs->atomic_get_property) 503 return crtc->funcs->atomic_get_property(crtc, state, property, val); 504 else 505 return -EINVAL; 506 507 return 0; 508 } 509 510 static int drm_atomic_plane_set_property(struct drm_plane *plane, 511 struct drm_plane_state *state, struct drm_property *property, 512 uint64_t val) 513 { 514 struct drm_device *dev = plane->dev; 515 struct drm_mode_config *config = &dev->mode_config; 516 517 if (property == config->prop_fb_id) { 518 struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val); 519 drm_atomic_set_fb_for_plane(state, fb); 520 if (fb) 521 drm_framebuffer_put(fb); 522 } else if (property == config->prop_in_fence_fd) { 523 if (state->fence) 524 return -EINVAL; 525 526 if (U642I64(val) == -1) 527 return 0; 528 529 state->fence = sync_file_get_fence(val); 530 if (!state->fence) 531 return -EINVAL; 532 533 } else if (property == config->prop_crtc_id) { 534 struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val); 535 return drm_atomic_set_crtc_for_plane(state, crtc); 536 } else if (property == config->prop_crtc_x) { 537 state->crtc_x = U642I64(val); 538 } else if (property == config->prop_crtc_y) { 539 state->crtc_y = U642I64(val); 540 } else if (property == config->prop_crtc_w) { 541 state->crtc_w = val; 542 } else if (property == config->prop_crtc_h) { 543 state->crtc_h = val; 544 } else if (property == config->prop_src_x) { 545 state->src_x = val; 546 } else if (property == config->prop_src_y) { 547 state->src_y = val; 548 } else if (property == config->prop_src_w) { 549 state->src_w = val; 550 } else if (property == config->prop_src_h) { 551 state->src_h = val; 552 } else if (property == plane->alpha_property) { 553 state->alpha = val; 554 } else if (property == plane->blend_mode_property) { 555 state->pixel_blend_mode = val; 556 } else if (property == plane->rotation_property) { 557 if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) { 558 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n", 559 plane->base.id, plane->name, val); 560 return -EINVAL; 561 } 562 state->rotation = val; 563 } else if (property == plane->zpos_property) { 564 state->zpos = val; 565 } else if (property == plane->color_encoding_property) { 566 state->color_encoding = val; 567 } else if (property == plane->color_range_property) { 568 state->color_range = val; 569 } else if (plane->funcs->atomic_set_property) { 570 return plane->funcs->atomic_set_property(plane, state, 571 property, val); 572 } else { 573 DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n", 574 plane->base.id, plane->name, 575 property->base.id, property->name); 576 return -EINVAL; 577 } 578 579 return 0; 580 } 581 582 static int 583 drm_atomic_plane_get_property(struct drm_plane *plane, 584 const struct drm_plane_state *state, 585 struct drm_property *property, uint64_t *val) 586 { 587 struct drm_device *dev = plane->dev; 588 struct drm_mode_config *config = &dev->mode_config; 589 590 if (property == config->prop_fb_id) { 591 *val = (state->fb) ? state->fb->base.id : 0; 592 } else if (property == config->prop_in_fence_fd) { 593 *val = -1; 594 } else if (property == config->prop_crtc_id) { 595 *val = (state->crtc) ? state->crtc->base.id : 0; 596 } else if (property == config->prop_crtc_x) { 597 *val = I642U64(state->crtc_x); 598 } else if (property == config->prop_crtc_y) { 599 *val = I642U64(state->crtc_y); 600 } else if (property == config->prop_crtc_w) { 601 *val = state->crtc_w; 602 } else if (property == config->prop_crtc_h) { 603 *val = state->crtc_h; 604 } else if (property == config->prop_src_x) { 605 *val = state->src_x; 606 } else if (property == config->prop_src_y) { 607 *val = state->src_y; 608 } else if (property == config->prop_src_w) { 609 *val = state->src_w; 610 } else if (property == config->prop_src_h) { 611 *val = state->src_h; 612 } else if (property == plane->alpha_property) { 613 *val = state->alpha; 614 } else if (property == plane->blend_mode_property) { 615 *val = state->pixel_blend_mode; 616 } else if (property == plane->rotation_property) { 617 *val = state->rotation; 618 } else if (property == plane->zpos_property) { 619 *val = state->zpos; 620 } else if (property == plane->color_encoding_property) { 621 *val = state->color_encoding; 622 } else if (property == plane->color_range_property) { 623 *val = state->color_range; 624 } else if (plane->funcs->atomic_get_property) { 625 return plane->funcs->atomic_get_property(plane, state, property, val); 626 } else { 627 return -EINVAL; 628 } 629 630 return 0; 631 } 632 633 static struct drm_writeback_job * 634 drm_atomic_get_writeback_job(struct drm_connector_state *conn_state) 635 { 636 WARN_ON(conn_state->connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK); 637 638 if (!conn_state->writeback_job) 639 conn_state->writeback_job = 640 kzalloc(sizeof(*conn_state->writeback_job), GFP_KERNEL); 641 642 return conn_state->writeback_job; 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 struct drm_writeback_job *job = 650 drm_atomic_get_writeback_job(conn_state); 651 if (!job) 652 return -ENOMEM; 653 654 drm_framebuffer_assign(&job->fb, fb); 655 656 if (fb) 657 DRM_DEBUG_ATOMIC("Set [FB:%d] for connector state %p\n", 658 fb->base.id, conn_state); 659 else 660 DRM_DEBUG_ATOMIC("Set [NOFB] for connector state %p\n", 661 conn_state); 662 663 return 0; 664 } 665 666 static int drm_atomic_connector_set_property(struct drm_connector *connector, 667 struct drm_connector_state *state, struct drm_property *property, 668 uint64_t val) 669 { 670 struct drm_device *dev = connector->dev; 671 struct drm_mode_config *config = &dev->mode_config; 672 673 if (property == config->prop_crtc_id) { 674 struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val); 675 return drm_atomic_set_crtc_for_connector(state, crtc); 676 } else if (property == config->dpms_property) { 677 /* setting DPMS property requires special handling, which 678 * is done in legacy setprop path for us. Disallow (for 679 * now?) atomic writes to DPMS property: 680 */ 681 return -EINVAL; 682 } else if (property == config->tv_select_subconnector_property) { 683 state->tv.subconnector = val; 684 } else if (property == config->tv_left_margin_property) { 685 state->tv.margins.left = val; 686 } else if (property == config->tv_right_margin_property) { 687 state->tv.margins.right = val; 688 } else if (property == config->tv_top_margin_property) { 689 state->tv.margins.top = val; 690 } else if (property == config->tv_bottom_margin_property) { 691 state->tv.margins.bottom = val; 692 } else if (property == config->tv_mode_property) { 693 state->tv.mode = val; 694 } else if (property == config->tv_brightness_property) { 695 state->tv.brightness = val; 696 } else if (property == config->tv_contrast_property) { 697 state->tv.contrast = val; 698 } else if (property == config->tv_flicker_reduction_property) { 699 state->tv.flicker_reduction = val; 700 } else if (property == config->tv_overscan_property) { 701 state->tv.overscan = val; 702 } else if (property == config->tv_saturation_property) { 703 state->tv.saturation = val; 704 } else if (property == config->tv_hue_property) { 705 state->tv.hue = val; 706 } else if (property == config->link_status_property) { 707 /* Never downgrade from GOOD to BAD on userspace's request here, 708 * only hw issues can do that. 709 * 710 * For an atomic property the userspace doesn't need to be able 711 * to understand all the properties, but needs to be able to 712 * restore the state it wants on VT switch. So if the userspace 713 * tries to change the link_status from GOOD to BAD, driver 714 * silently rejects it and returns a 0. This prevents userspace 715 * from accidently breaking the display when it restores the 716 * state. 717 */ 718 if (state->link_status != DRM_LINK_STATUS_GOOD) 719 state->link_status = val; 720 } else if (property == config->aspect_ratio_property) { 721 state->picture_aspect_ratio = val; 722 } else if (property == config->content_type_property) { 723 state->content_type = val; 724 } else if (property == connector->scaling_mode_property) { 725 state->scaling_mode = val; 726 } else if (property == connector->content_protection_property) { 727 if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) { 728 DRM_DEBUG_KMS("only drivers can set CP Enabled\n"); 729 return -EINVAL; 730 } 731 state->content_protection = val; 732 } else if (property == config->writeback_fb_id_property) { 733 struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val); 734 int ret = drm_atomic_set_writeback_fb_for_connector(state, fb); 735 if (fb) 736 drm_framebuffer_put(fb); 737 return ret; 738 } else if (property == config->writeback_out_fence_ptr_property) { 739 s32 __user *fence_ptr = u64_to_user_ptr(val); 740 741 return set_out_fence_for_connector(state->state, connector, 742 fence_ptr); 743 } else if (property == connector->max_bpc_property) { 744 state->max_requested_bpc = val; 745 } else if (connector->funcs->atomic_set_property) { 746 return connector->funcs->atomic_set_property(connector, 747 state, property, val); 748 } else { 749 DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n", 750 connector->base.id, connector->name, 751 property->base.id, property->name); 752 return -EINVAL; 753 } 754 755 return 0; 756 } 757 758 static int 759 drm_atomic_connector_get_property(struct drm_connector *connector, 760 const struct drm_connector_state *state, 761 struct drm_property *property, uint64_t *val) 762 { 763 struct drm_device *dev = connector->dev; 764 struct drm_mode_config *config = &dev->mode_config; 765 766 if (property == config->prop_crtc_id) { 767 *val = (state->crtc) ? state->crtc->base.id : 0; 768 } else if (property == config->dpms_property) { 769 *val = connector->dpms; 770 } else if (property == config->tv_select_subconnector_property) { 771 *val = state->tv.subconnector; 772 } else if (property == config->tv_left_margin_property) { 773 *val = state->tv.margins.left; 774 } else if (property == config->tv_right_margin_property) { 775 *val = state->tv.margins.right; 776 } else if (property == config->tv_top_margin_property) { 777 *val = state->tv.margins.top; 778 } else if (property == config->tv_bottom_margin_property) { 779 *val = state->tv.margins.bottom; 780 } else if (property == config->tv_mode_property) { 781 *val = state->tv.mode; 782 } else if (property == config->tv_brightness_property) { 783 *val = state->tv.brightness; 784 } else if (property == config->tv_contrast_property) { 785 *val = state->tv.contrast; 786 } else if (property == config->tv_flicker_reduction_property) { 787 *val = state->tv.flicker_reduction; 788 } else if (property == config->tv_overscan_property) { 789 *val = state->tv.overscan; 790 } else if (property == config->tv_saturation_property) { 791 *val = state->tv.saturation; 792 } else if (property == config->tv_hue_property) { 793 *val = state->tv.hue; 794 } else if (property == config->link_status_property) { 795 *val = state->link_status; 796 } else if (property == config->aspect_ratio_property) { 797 *val = state->picture_aspect_ratio; 798 } else if (property == config->content_type_property) { 799 *val = state->content_type; 800 } else if (property == connector->scaling_mode_property) { 801 *val = state->scaling_mode; 802 } else if (property == connector->content_protection_property) { 803 *val = state->content_protection; 804 } else if (property == config->writeback_fb_id_property) { 805 /* Writeback framebuffer is one-shot, write and forget */ 806 *val = 0; 807 } else if (property == config->writeback_out_fence_ptr_property) { 808 *val = 0; 809 } else if (property == connector->max_bpc_property) { 810 *val = state->max_requested_bpc; 811 } else if (connector->funcs->atomic_get_property) { 812 return connector->funcs->atomic_get_property(connector, 813 state, property, val); 814 } else { 815 return -EINVAL; 816 } 817 818 return 0; 819 } 820 821 int drm_atomic_get_property(struct drm_mode_object *obj, 822 struct drm_property *property, uint64_t *val) 823 { 824 struct drm_device *dev = property->dev; 825 int ret; 826 827 switch (obj->type) { 828 case DRM_MODE_OBJECT_CONNECTOR: { 829 struct drm_connector *connector = obj_to_connector(obj); 830 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); 831 ret = drm_atomic_connector_get_property(connector, 832 connector->state, property, val); 833 break; 834 } 835 case DRM_MODE_OBJECT_CRTC: { 836 struct drm_crtc *crtc = obj_to_crtc(obj); 837 WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); 838 ret = drm_atomic_crtc_get_property(crtc, 839 crtc->state, property, val); 840 break; 841 } 842 case DRM_MODE_OBJECT_PLANE: { 843 struct drm_plane *plane = obj_to_plane(obj); 844 WARN_ON(!drm_modeset_is_locked(&plane->mutex)); 845 ret = drm_atomic_plane_get_property(plane, 846 plane->state, property, val); 847 break; 848 } 849 default: 850 ret = -EINVAL; 851 break; 852 } 853 854 return ret; 855 } 856 857 /* 858 * The big monster ioctl 859 */ 860 861 static struct drm_pending_vblank_event *create_vblank_event( 862 struct drm_crtc *crtc, uint64_t user_data) 863 { 864 struct drm_pending_vblank_event *e = NULL; 865 866 e = kzalloc(sizeof *e, GFP_KERNEL); 867 if (!e) 868 return NULL; 869 870 e->event.base.type = DRM_EVENT_FLIP_COMPLETE; 871 e->event.base.length = sizeof(e->event); 872 e->event.vbl.crtc_id = crtc->base.id; 873 e->event.vbl.user_data = user_data; 874 875 return e; 876 } 877 878 int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state, 879 struct drm_connector *connector, 880 int mode) 881 { 882 struct drm_connector *tmp_connector; 883 struct drm_connector_state *new_conn_state; 884 struct drm_crtc *crtc; 885 struct drm_crtc_state *crtc_state; 886 int i, ret, old_mode = connector->dpms; 887 bool active = false; 888 889 ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex, 890 state->acquire_ctx); 891 if (ret) 892 return ret; 893 894 if (mode != DRM_MODE_DPMS_ON) 895 mode = DRM_MODE_DPMS_OFF; 896 connector->dpms = mode; 897 898 crtc = connector->state->crtc; 899 if (!crtc) 900 goto out; 901 ret = drm_atomic_add_affected_connectors(state, crtc); 902 if (ret) 903 goto out; 904 905 crtc_state = drm_atomic_get_crtc_state(state, crtc); 906 if (IS_ERR(crtc_state)) { 907 ret = PTR_ERR(crtc_state); 908 goto out; 909 } 910 911 for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) { 912 if (new_conn_state->crtc != crtc) 913 continue; 914 if (tmp_connector->dpms == DRM_MODE_DPMS_ON) { 915 active = true; 916 break; 917 } 918 } 919 920 crtc_state->active = active; 921 ret = drm_atomic_commit(state); 922 out: 923 if (ret != 0) 924 connector->dpms = old_mode; 925 return ret; 926 } 927 928 int drm_atomic_set_property(struct drm_atomic_state *state, 929 struct drm_mode_object *obj, 930 struct drm_property *prop, 931 uint64_t prop_value) 932 { 933 struct drm_mode_object *ref; 934 int ret; 935 936 if (!drm_property_change_valid_get(prop, prop_value, &ref)) 937 return -EINVAL; 938 939 switch (obj->type) { 940 case DRM_MODE_OBJECT_CONNECTOR: { 941 struct drm_connector *connector = obj_to_connector(obj); 942 struct drm_connector_state *connector_state; 943 944 connector_state = drm_atomic_get_connector_state(state, connector); 945 if (IS_ERR(connector_state)) { 946 ret = PTR_ERR(connector_state); 947 break; 948 } 949 950 ret = drm_atomic_connector_set_property(connector, 951 connector_state, prop, prop_value); 952 break; 953 } 954 case DRM_MODE_OBJECT_CRTC: { 955 struct drm_crtc *crtc = obj_to_crtc(obj); 956 struct drm_crtc_state *crtc_state; 957 958 crtc_state = drm_atomic_get_crtc_state(state, crtc); 959 if (IS_ERR(crtc_state)) { 960 ret = PTR_ERR(crtc_state); 961 break; 962 } 963 964 ret = drm_atomic_crtc_set_property(crtc, 965 crtc_state, prop, prop_value); 966 break; 967 } 968 case DRM_MODE_OBJECT_PLANE: { 969 struct drm_plane *plane = obj_to_plane(obj); 970 struct drm_plane_state *plane_state; 971 972 plane_state = drm_atomic_get_plane_state(state, plane); 973 if (IS_ERR(plane_state)) { 974 ret = PTR_ERR(plane_state); 975 break; 976 } 977 978 ret = drm_atomic_plane_set_property(plane, 979 plane_state, prop, prop_value); 980 break; 981 } 982 default: 983 ret = -EINVAL; 984 break; 985 } 986 987 drm_property_change_valid_put(prop, ref); 988 return ret; 989 } 990 991 /** 992 * DOC: explicit fencing properties 993 * 994 * Explicit fencing allows userspace to control the buffer synchronization 995 * between devices. A Fence or a group of fences are transfered to/from 996 * userspace using Sync File fds and there are two DRM properties for that. 997 * IN_FENCE_FD on each DRM Plane to send fences to the kernel and 998 * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel. 999 * 1000 * As a contrast, with implicit fencing the kernel keeps track of any 1001 * ongoing rendering, and automatically ensures that the atomic update waits 1002 * for any pending rendering to complete. For shared buffers represented with 1003 * a &struct dma_buf this is tracked in &struct reservation_object. 1004 * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org), 1005 * whereas explicit fencing is what Android wants. 1006 * 1007 * "IN_FENCE_FD”: 1008 * Use this property to pass a fence that DRM should wait on before 1009 * proceeding with the Atomic Commit request and show the framebuffer for 1010 * the plane on the screen. The fence can be either a normal fence or a 1011 * merged one, the sync_file framework will handle both cases and use a 1012 * fence_array if a merged fence is received. Passing -1 here means no 1013 * fences to wait on. 1014 * 1015 * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag 1016 * it will only check if the Sync File is a valid one. 1017 * 1018 * On the driver side the fence is stored on the @fence parameter of 1019 * &struct drm_plane_state. Drivers which also support implicit fencing 1020 * should set the implicit fence using drm_atomic_set_fence_for_plane(), 1021 * to make sure there's consistent behaviour between drivers in precedence 1022 * of implicit vs. explicit fencing. 1023 * 1024 * "OUT_FENCE_PTR”: 1025 * Use this property to pass a file descriptor pointer to DRM. Once the 1026 * Atomic Commit request call returns OUT_FENCE_PTR will be filled with 1027 * the file descriptor number of a Sync File. This Sync File contains the 1028 * CRTC fence that will be signaled when all framebuffers present on the 1029 * Atomic Commit * request for that given CRTC are scanned out on the 1030 * screen. 1031 * 1032 * The Atomic Commit request fails if a invalid pointer is passed. If the 1033 * Atomic Commit request fails for any other reason the out fence fd 1034 * returned will be -1. On a Atomic Commit with the 1035 * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1. 1036 * 1037 * Note that out-fences don't have a special interface to drivers and are 1038 * internally represented by a &struct drm_pending_vblank_event in struct 1039 * &drm_crtc_state, which is also used by the nonblocking atomic commit 1040 * helpers and for the DRM event handling for existing userspace. 1041 */ 1042 1043 struct drm_out_fence_state { 1044 s32 __user *out_fence_ptr; 1045 struct sync_file *sync_file; 1046 int fd; 1047 }; 1048 1049 static int setup_out_fence(struct drm_out_fence_state *fence_state, 1050 struct dma_fence *fence) 1051 { 1052 fence_state->fd = get_unused_fd_flags(O_CLOEXEC); 1053 if (fence_state->fd < 0) 1054 return fence_state->fd; 1055 1056 if (put_user(fence_state->fd, fence_state->out_fence_ptr)) 1057 return -EFAULT; 1058 1059 fence_state->sync_file = sync_file_create(fence); 1060 if (!fence_state->sync_file) 1061 return -ENOMEM; 1062 1063 return 0; 1064 } 1065 1066 static int prepare_signaling(struct drm_device *dev, 1067 struct drm_atomic_state *state, 1068 struct drm_mode_atomic *arg, 1069 struct drm_file *file_priv, 1070 struct drm_out_fence_state **fence_state, 1071 unsigned int *num_fences) 1072 { 1073 struct drm_crtc *crtc; 1074 struct drm_crtc_state *crtc_state; 1075 struct drm_connector *conn; 1076 struct drm_connector_state *conn_state; 1077 int i, c = 0, ret; 1078 1079 if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) 1080 return 0; 1081 1082 for_each_new_crtc_in_state(state, crtc, crtc_state, i) { 1083 s32 __user *fence_ptr; 1084 1085 fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc); 1086 1087 if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) { 1088 struct drm_pending_vblank_event *e; 1089 1090 e = create_vblank_event(crtc, arg->user_data); 1091 if (!e) 1092 return -ENOMEM; 1093 1094 crtc_state->event = e; 1095 } 1096 1097 if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) { 1098 struct drm_pending_vblank_event *e = crtc_state->event; 1099 1100 if (!file_priv) 1101 continue; 1102 1103 ret = drm_event_reserve_init(dev, file_priv, &e->base, 1104 &e->event.base); 1105 if (ret) { 1106 kfree(e); 1107 crtc_state->event = NULL; 1108 return ret; 1109 } 1110 } 1111 1112 if (fence_ptr) { 1113 struct dma_fence *fence; 1114 struct drm_out_fence_state *f; 1115 1116 f = krealloc(*fence_state, sizeof(**fence_state) * 1117 (*num_fences + 1), GFP_KERNEL); 1118 if (!f) 1119 return -ENOMEM; 1120 1121 memset(&f[*num_fences], 0, sizeof(*f)); 1122 1123 f[*num_fences].out_fence_ptr = fence_ptr; 1124 *fence_state = f; 1125 1126 fence = drm_crtc_create_fence(crtc); 1127 if (!fence) 1128 return -ENOMEM; 1129 1130 ret = setup_out_fence(&f[(*num_fences)++], fence); 1131 if (ret) { 1132 dma_fence_put(fence); 1133 return ret; 1134 } 1135 1136 crtc_state->event->base.fence = fence; 1137 } 1138 1139 c++; 1140 } 1141 1142 for_each_new_connector_in_state(state, conn, conn_state, i) { 1143 struct drm_writeback_connector *wb_conn; 1144 struct drm_writeback_job *job; 1145 struct drm_out_fence_state *f; 1146 struct dma_fence *fence; 1147 s32 __user *fence_ptr; 1148 1149 fence_ptr = get_out_fence_for_connector(state, conn); 1150 if (!fence_ptr) 1151 continue; 1152 1153 job = drm_atomic_get_writeback_job(conn_state); 1154 if (!job) 1155 return -ENOMEM; 1156 1157 f = krealloc(*fence_state, sizeof(**fence_state) * 1158 (*num_fences + 1), GFP_KERNEL); 1159 if (!f) 1160 return -ENOMEM; 1161 1162 memset(&f[*num_fences], 0, sizeof(*f)); 1163 1164 f[*num_fences].out_fence_ptr = fence_ptr; 1165 *fence_state = f; 1166 1167 wb_conn = drm_connector_to_writeback(conn); 1168 fence = drm_writeback_get_out_fence(wb_conn); 1169 if (!fence) 1170 return -ENOMEM; 1171 1172 ret = setup_out_fence(&f[(*num_fences)++], fence); 1173 if (ret) { 1174 dma_fence_put(fence); 1175 return ret; 1176 } 1177 1178 job->out_fence = fence; 1179 } 1180 1181 /* 1182 * Having this flag means user mode pends on event which will never 1183 * reach due to lack of at least one CRTC for signaling 1184 */ 1185 if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) 1186 return -EINVAL; 1187 1188 return 0; 1189 } 1190 1191 static void complete_signaling(struct drm_device *dev, 1192 struct drm_atomic_state *state, 1193 struct drm_out_fence_state *fence_state, 1194 unsigned int num_fences, 1195 bool install_fds) 1196 { 1197 struct drm_crtc *crtc; 1198 struct drm_crtc_state *crtc_state; 1199 int i; 1200 1201 if (install_fds) { 1202 for (i = 0; i < num_fences; i++) 1203 fd_install(fence_state[i].fd, 1204 fence_state[i].sync_file->file); 1205 1206 kfree(fence_state); 1207 return; 1208 } 1209 1210 for_each_new_crtc_in_state(state, crtc, crtc_state, i) { 1211 struct drm_pending_vblank_event *event = crtc_state->event; 1212 /* 1213 * Free the allocated event. drm_atomic_helper_setup_commit 1214 * can allocate an event too, so only free it if it's ours 1215 * to prevent a double free in drm_atomic_state_clear. 1216 */ 1217 if (event && (event->base.fence || event->base.file_priv)) { 1218 drm_event_cancel_free(dev, &event->base); 1219 crtc_state->event = NULL; 1220 } 1221 } 1222 1223 if (!fence_state) 1224 return; 1225 1226 for (i = 0; i < num_fences; i++) { 1227 if (fence_state[i].sync_file) 1228 fput(fence_state[i].sync_file->file); 1229 if (fence_state[i].fd >= 0) 1230 put_unused_fd(fence_state[i].fd); 1231 1232 /* If this fails log error to the user */ 1233 if (fence_state[i].out_fence_ptr && 1234 put_user(-1, fence_state[i].out_fence_ptr)) 1235 DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n"); 1236 } 1237 1238 kfree(fence_state); 1239 } 1240 1241 int drm_mode_atomic_ioctl(struct drm_device *dev, 1242 void *data, struct drm_file *file_priv) 1243 { 1244 struct drm_mode_atomic *arg = data; 1245 uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr); 1246 uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr); 1247 uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); 1248 uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr); 1249 unsigned int copied_objs, copied_props; 1250 struct drm_atomic_state *state; 1251 struct drm_modeset_acquire_ctx ctx; 1252 struct drm_out_fence_state *fence_state; 1253 int ret = 0; 1254 unsigned int i, j, num_fences; 1255 1256 /* disallow for drivers not supporting atomic: */ 1257 if (!drm_core_check_feature(dev, DRIVER_ATOMIC)) 1258 return -EOPNOTSUPP; 1259 1260 /* disallow for userspace that has not enabled atomic cap (even 1261 * though this may be a bit overkill, since legacy userspace 1262 * wouldn't know how to call this ioctl) 1263 */ 1264 if (!file_priv->atomic) 1265 return -EINVAL; 1266 1267 if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS) 1268 return -EINVAL; 1269 1270 if (arg->reserved) 1271 return -EINVAL; 1272 1273 if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) && 1274 !dev->mode_config.async_page_flip) 1275 return -EINVAL; 1276 1277 /* can't test and expect an event at the same time. */ 1278 if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) && 1279 (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) 1280 return -EINVAL; 1281 1282 drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE); 1283 1284 state = drm_atomic_state_alloc(dev); 1285 if (!state) 1286 return -ENOMEM; 1287 1288 state->acquire_ctx = &ctx; 1289 state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET); 1290 1291 retry: 1292 copied_objs = 0; 1293 copied_props = 0; 1294 fence_state = NULL; 1295 num_fences = 0; 1296 1297 for (i = 0; i < arg->count_objs; i++) { 1298 uint32_t obj_id, count_props; 1299 struct drm_mode_object *obj; 1300 1301 if (get_user(obj_id, objs_ptr + copied_objs)) { 1302 ret = -EFAULT; 1303 goto out; 1304 } 1305 1306 obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY); 1307 if (!obj) { 1308 ret = -ENOENT; 1309 goto out; 1310 } 1311 1312 if (!obj->properties) { 1313 drm_mode_object_put(obj); 1314 ret = -ENOENT; 1315 goto out; 1316 } 1317 1318 if (get_user(count_props, count_props_ptr + copied_objs)) { 1319 drm_mode_object_put(obj); 1320 ret = -EFAULT; 1321 goto out; 1322 } 1323 1324 copied_objs++; 1325 1326 for (j = 0; j < count_props; j++) { 1327 uint32_t prop_id; 1328 uint64_t prop_value; 1329 struct drm_property *prop; 1330 1331 if (get_user(prop_id, props_ptr + copied_props)) { 1332 drm_mode_object_put(obj); 1333 ret = -EFAULT; 1334 goto out; 1335 } 1336 1337 prop = drm_mode_obj_find_prop_id(obj, prop_id); 1338 if (!prop) { 1339 drm_mode_object_put(obj); 1340 ret = -ENOENT; 1341 goto out; 1342 } 1343 1344 if (copy_from_user(&prop_value, 1345 prop_values_ptr + copied_props, 1346 sizeof(prop_value))) { 1347 drm_mode_object_put(obj); 1348 ret = -EFAULT; 1349 goto out; 1350 } 1351 1352 ret = drm_atomic_set_property(state, obj, prop, 1353 prop_value); 1354 if (ret) { 1355 drm_mode_object_put(obj); 1356 goto out; 1357 } 1358 1359 copied_props++; 1360 } 1361 1362 drm_mode_object_put(obj); 1363 } 1364 1365 ret = prepare_signaling(dev, state, arg, file_priv, &fence_state, 1366 &num_fences); 1367 if (ret) 1368 goto out; 1369 1370 if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) { 1371 ret = drm_atomic_check_only(state); 1372 } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) { 1373 ret = drm_atomic_nonblocking_commit(state); 1374 } else { 1375 if (unlikely(drm_debug & DRM_UT_STATE)) 1376 drm_atomic_print_state(state); 1377 1378 ret = drm_atomic_commit(state); 1379 } 1380 1381 out: 1382 complete_signaling(dev, state, fence_state, num_fences, !ret); 1383 1384 if (ret == -EDEADLK) { 1385 drm_atomic_state_clear(state); 1386 ret = drm_modeset_backoff(&ctx); 1387 if (!ret) 1388 goto retry; 1389 } 1390 1391 drm_atomic_state_put(state); 1392 1393 drm_modeset_drop_locks(&ctx); 1394 drm_modeset_acquire_fini(&ctx); 1395 1396 return ret; 1397 } 1398