1 /* 2 * Copyright (C) 2012 Avionic Design GmbH 3 * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 */ 9 10 #include <linux/host1x.h> 11 #include <linux/iommu.h> 12 13 #include <drm/drm_atomic.h> 14 #include <drm/drm_atomic_helper.h> 15 16 #include "drm.h" 17 #include "gem.h" 18 19 #define DRIVER_NAME "tegra" 20 #define DRIVER_DESC "NVIDIA Tegra graphics" 21 #define DRIVER_DATE "20120330" 22 #define DRIVER_MAJOR 0 23 #define DRIVER_MINOR 0 24 #define DRIVER_PATCHLEVEL 0 25 26 struct tegra_drm_file { 27 struct list_head contexts; 28 }; 29 30 static void tegra_atomic_schedule(struct tegra_drm *tegra, 31 struct drm_atomic_state *state) 32 { 33 tegra->commit.state = state; 34 schedule_work(&tegra->commit.work); 35 } 36 37 static void tegra_atomic_complete(struct tegra_drm *tegra, 38 struct drm_atomic_state *state) 39 { 40 struct drm_device *drm = tegra->drm; 41 42 /* 43 * Everything below can be run asynchronously without the need to grab 44 * any modeset locks at all under one condition: It must be guaranteed 45 * that the asynchronous work has either been cancelled (if the driver 46 * supports it, which at least requires that the framebuffers get 47 * cleaned up with drm_atomic_helper_cleanup_planes()) or completed 48 * before the new state gets committed on the software side with 49 * drm_atomic_helper_swap_state(). 50 * 51 * This scheme allows new atomic state updates to be prepared and 52 * checked in parallel to the asynchronous completion of the previous 53 * update. Which is important since compositors need to figure out the 54 * composition of the next frame right after having submitted the 55 * current layout. 56 */ 57 58 drm_atomic_helper_commit_pre_planes(drm, state); 59 drm_atomic_helper_commit_planes(drm, state); 60 drm_atomic_helper_commit_post_planes(drm, state); 61 62 drm_atomic_helper_wait_for_vblanks(drm, state); 63 64 drm_atomic_helper_cleanup_planes(drm, state); 65 drm_atomic_state_free(state); 66 } 67 68 static void tegra_atomic_work(struct work_struct *work) 69 { 70 struct tegra_drm *tegra = container_of(work, struct tegra_drm, 71 commit.work); 72 73 tegra_atomic_complete(tegra, tegra->commit.state); 74 } 75 76 static int tegra_atomic_commit(struct drm_device *drm, 77 struct drm_atomic_state *state, bool async) 78 { 79 struct tegra_drm *tegra = drm->dev_private; 80 int err; 81 82 err = drm_atomic_helper_prepare_planes(drm, state); 83 if (err) 84 return err; 85 86 /* serialize outstanding asynchronous commits */ 87 mutex_lock(&tegra->commit.lock); 88 flush_work(&tegra->commit.work); 89 90 /* 91 * This is the point of no return - everything below never fails except 92 * when the hw goes bonghits. Which means we can commit the new state on 93 * the software side now. 94 */ 95 96 drm_atomic_helper_swap_state(drm, state); 97 98 if (async) 99 tegra_atomic_schedule(tegra, state); 100 else 101 tegra_atomic_complete(tegra, state); 102 103 mutex_unlock(&tegra->commit.lock); 104 return 0; 105 } 106 107 static const struct drm_mode_config_funcs tegra_drm_mode_funcs = { 108 .fb_create = tegra_fb_create, 109 #ifdef CONFIG_DRM_TEGRA_FBDEV 110 .output_poll_changed = tegra_fb_output_poll_changed, 111 #endif 112 .atomic_check = drm_atomic_helper_check, 113 .atomic_commit = tegra_atomic_commit, 114 }; 115 116 static int tegra_drm_load(struct drm_device *drm, unsigned long flags) 117 { 118 struct host1x_device *device = to_host1x_device(drm->dev); 119 struct tegra_drm *tegra; 120 int err; 121 122 tegra = kzalloc(sizeof(*tegra), GFP_KERNEL); 123 if (!tegra) 124 return -ENOMEM; 125 126 if (iommu_present(&platform_bus_type)) { 127 tegra->domain = iommu_domain_alloc(&platform_bus_type); 128 if (!tegra->domain) { 129 err = -ENOMEM; 130 goto free; 131 } 132 133 DRM_DEBUG("IOMMU context initialized\n"); 134 drm_mm_init(&tegra->mm, 0, SZ_2G); 135 } 136 137 mutex_init(&tegra->clients_lock); 138 INIT_LIST_HEAD(&tegra->clients); 139 140 mutex_init(&tegra->commit.lock); 141 INIT_WORK(&tegra->commit.work, tegra_atomic_work); 142 143 drm->dev_private = tegra; 144 tegra->drm = drm; 145 146 drm_mode_config_init(drm); 147 148 drm->mode_config.min_width = 0; 149 drm->mode_config.min_height = 0; 150 151 drm->mode_config.max_width = 4096; 152 drm->mode_config.max_height = 4096; 153 154 drm->mode_config.funcs = &tegra_drm_mode_funcs; 155 156 err = tegra_drm_fb_prepare(drm); 157 if (err < 0) 158 goto config; 159 160 drm_kms_helper_poll_init(drm); 161 162 err = host1x_device_init(device); 163 if (err < 0) 164 goto fbdev; 165 166 drm_mode_config_reset(drm); 167 168 /* 169 * We don't use the drm_irq_install() helpers provided by the DRM 170 * core, so we need to set this manually in order to allow the 171 * DRM_IOCTL_WAIT_VBLANK to operate correctly. 172 */ 173 drm->irq_enabled = true; 174 175 err = drm_vblank_init(drm, drm->mode_config.num_crtc); 176 if (err < 0) 177 goto device; 178 179 err = tegra_drm_fb_init(drm); 180 if (err < 0) 181 goto vblank; 182 183 return 0; 184 185 vblank: 186 drm_vblank_cleanup(drm); 187 device: 188 host1x_device_exit(device); 189 fbdev: 190 drm_kms_helper_poll_fini(drm); 191 tegra_drm_fb_free(drm); 192 config: 193 drm_mode_config_cleanup(drm); 194 195 if (tegra->domain) { 196 iommu_domain_free(tegra->domain); 197 drm_mm_takedown(&tegra->mm); 198 } 199 free: 200 kfree(tegra); 201 return err; 202 } 203 204 static int tegra_drm_unload(struct drm_device *drm) 205 { 206 struct host1x_device *device = to_host1x_device(drm->dev); 207 struct tegra_drm *tegra = drm->dev_private; 208 int err; 209 210 drm_kms_helper_poll_fini(drm); 211 tegra_drm_fb_exit(drm); 212 drm_mode_config_cleanup(drm); 213 drm_vblank_cleanup(drm); 214 215 err = host1x_device_exit(device); 216 if (err < 0) 217 return err; 218 219 if (tegra->domain) { 220 iommu_domain_free(tegra->domain); 221 drm_mm_takedown(&tegra->mm); 222 } 223 224 kfree(tegra); 225 226 return 0; 227 } 228 229 static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp) 230 { 231 struct tegra_drm_file *fpriv; 232 233 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL); 234 if (!fpriv) 235 return -ENOMEM; 236 237 INIT_LIST_HEAD(&fpriv->contexts); 238 filp->driver_priv = fpriv; 239 240 return 0; 241 } 242 243 static void tegra_drm_context_free(struct tegra_drm_context *context) 244 { 245 context->client->ops->close_channel(context); 246 kfree(context); 247 } 248 249 static void tegra_drm_lastclose(struct drm_device *drm) 250 { 251 #ifdef CONFIG_DRM_TEGRA_FBDEV 252 struct tegra_drm *tegra = drm->dev_private; 253 254 tegra_fbdev_restore_mode(tegra->fbdev); 255 #endif 256 } 257 258 static struct host1x_bo * 259 host1x_bo_lookup(struct drm_device *drm, struct drm_file *file, u32 handle) 260 { 261 struct drm_gem_object *gem; 262 struct tegra_bo *bo; 263 264 gem = drm_gem_object_lookup(drm, file, handle); 265 if (!gem) 266 return NULL; 267 268 mutex_lock(&drm->struct_mutex); 269 drm_gem_object_unreference(gem); 270 mutex_unlock(&drm->struct_mutex); 271 272 bo = to_tegra_bo(gem); 273 return &bo->base; 274 } 275 276 static int host1x_reloc_copy_from_user(struct host1x_reloc *dest, 277 struct drm_tegra_reloc __user *src, 278 struct drm_device *drm, 279 struct drm_file *file) 280 { 281 u32 cmdbuf, target; 282 int err; 283 284 err = get_user(cmdbuf, &src->cmdbuf.handle); 285 if (err < 0) 286 return err; 287 288 err = get_user(dest->cmdbuf.offset, &src->cmdbuf.offset); 289 if (err < 0) 290 return err; 291 292 err = get_user(target, &src->target.handle); 293 if (err < 0) 294 return err; 295 296 err = get_user(dest->target.offset, &src->target.offset); 297 if (err < 0) 298 return err; 299 300 err = get_user(dest->shift, &src->shift); 301 if (err < 0) 302 return err; 303 304 dest->cmdbuf.bo = host1x_bo_lookup(drm, file, cmdbuf); 305 if (!dest->cmdbuf.bo) 306 return -ENOENT; 307 308 dest->target.bo = host1x_bo_lookup(drm, file, target); 309 if (!dest->target.bo) 310 return -ENOENT; 311 312 return 0; 313 } 314 315 int tegra_drm_submit(struct tegra_drm_context *context, 316 struct drm_tegra_submit *args, struct drm_device *drm, 317 struct drm_file *file) 318 { 319 unsigned int num_cmdbufs = args->num_cmdbufs; 320 unsigned int num_relocs = args->num_relocs; 321 unsigned int num_waitchks = args->num_waitchks; 322 struct drm_tegra_cmdbuf __user *cmdbufs = 323 (void __user *)(uintptr_t)args->cmdbufs; 324 struct drm_tegra_reloc __user *relocs = 325 (void __user *)(uintptr_t)args->relocs; 326 struct drm_tegra_waitchk __user *waitchks = 327 (void __user *)(uintptr_t)args->waitchks; 328 struct drm_tegra_syncpt syncpt; 329 struct host1x_job *job; 330 int err; 331 332 /* We don't yet support other than one syncpt_incr struct per submit */ 333 if (args->num_syncpts != 1) 334 return -EINVAL; 335 336 job = host1x_job_alloc(context->channel, args->num_cmdbufs, 337 args->num_relocs, args->num_waitchks); 338 if (!job) 339 return -ENOMEM; 340 341 job->num_relocs = args->num_relocs; 342 job->num_waitchk = args->num_waitchks; 343 job->client = (u32)args->context; 344 job->class = context->client->base.class; 345 job->serialize = true; 346 347 while (num_cmdbufs) { 348 struct drm_tegra_cmdbuf cmdbuf; 349 struct host1x_bo *bo; 350 351 if (copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf))) { 352 err = -EFAULT; 353 goto fail; 354 } 355 356 bo = host1x_bo_lookup(drm, file, cmdbuf.handle); 357 if (!bo) { 358 err = -ENOENT; 359 goto fail; 360 } 361 362 host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset); 363 num_cmdbufs--; 364 cmdbufs++; 365 } 366 367 /* copy and resolve relocations from submit */ 368 while (num_relocs--) { 369 err = host1x_reloc_copy_from_user(&job->relocarray[num_relocs], 370 &relocs[num_relocs], drm, 371 file); 372 if (err < 0) 373 goto fail; 374 } 375 376 if (copy_from_user(job->waitchk, waitchks, 377 sizeof(*waitchks) * num_waitchks)) { 378 err = -EFAULT; 379 goto fail; 380 } 381 382 if (copy_from_user(&syncpt, (void __user *)(uintptr_t)args->syncpts, 383 sizeof(syncpt))) { 384 err = -EFAULT; 385 goto fail; 386 } 387 388 job->is_addr_reg = context->client->ops->is_addr_reg; 389 job->syncpt_incrs = syncpt.incrs; 390 job->syncpt_id = syncpt.id; 391 job->timeout = 10000; 392 393 if (args->timeout && args->timeout < 10000) 394 job->timeout = args->timeout; 395 396 err = host1x_job_pin(job, context->client->base.dev); 397 if (err) 398 goto fail; 399 400 err = host1x_job_submit(job); 401 if (err) 402 goto fail_submit; 403 404 args->fence = job->syncpt_end; 405 406 host1x_job_put(job); 407 return 0; 408 409 fail_submit: 410 host1x_job_unpin(job); 411 fail: 412 host1x_job_put(job); 413 return err; 414 } 415 416 417 #ifdef CONFIG_DRM_TEGRA_STAGING 418 static struct tegra_drm_context *tegra_drm_get_context(__u64 context) 419 { 420 return (struct tegra_drm_context *)(uintptr_t)context; 421 } 422 423 static bool tegra_drm_file_owns_context(struct tegra_drm_file *file, 424 struct tegra_drm_context *context) 425 { 426 struct tegra_drm_context *ctx; 427 428 list_for_each_entry(ctx, &file->contexts, list) 429 if (ctx == context) 430 return true; 431 432 return false; 433 } 434 435 static int tegra_gem_create(struct drm_device *drm, void *data, 436 struct drm_file *file) 437 { 438 struct drm_tegra_gem_create *args = data; 439 struct tegra_bo *bo; 440 441 bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags, 442 &args->handle); 443 if (IS_ERR(bo)) 444 return PTR_ERR(bo); 445 446 return 0; 447 } 448 449 static int tegra_gem_mmap(struct drm_device *drm, void *data, 450 struct drm_file *file) 451 { 452 struct drm_tegra_gem_mmap *args = data; 453 struct drm_gem_object *gem; 454 struct tegra_bo *bo; 455 456 gem = drm_gem_object_lookup(drm, file, args->handle); 457 if (!gem) 458 return -EINVAL; 459 460 bo = to_tegra_bo(gem); 461 462 args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node); 463 464 drm_gem_object_unreference(gem); 465 466 return 0; 467 } 468 469 static int tegra_syncpt_read(struct drm_device *drm, void *data, 470 struct drm_file *file) 471 { 472 struct host1x *host = dev_get_drvdata(drm->dev->parent); 473 struct drm_tegra_syncpt_read *args = data; 474 struct host1x_syncpt *sp; 475 476 sp = host1x_syncpt_get(host, args->id); 477 if (!sp) 478 return -EINVAL; 479 480 args->value = host1x_syncpt_read_min(sp); 481 return 0; 482 } 483 484 static int tegra_syncpt_incr(struct drm_device *drm, void *data, 485 struct drm_file *file) 486 { 487 struct host1x *host1x = dev_get_drvdata(drm->dev->parent); 488 struct drm_tegra_syncpt_incr *args = data; 489 struct host1x_syncpt *sp; 490 491 sp = host1x_syncpt_get(host1x, args->id); 492 if (!sp) 493 return -EINVAL; 494 495 return host1x_syncpt_incr(sp); 496 } 497 498 static int tegra_syncpt_wait(struct drm_device *drm, void *data, 499 struct drm_file *file) 500 { 501 struct host1x *host1x = dev_get_drvdata(drm->dev->parent); 502 struct drm_tegra_syncpt_wait *args = data; 503 struct host1x_syncpt *sp; 504 505 sp = host1x_syncpt_get(host1x, args->id); 506 if (!sp) 507 return -EINVAL; 508 509 return host1x_syncpt_wait(sp, args->thresh, args->timeout, 510 &args->value); 511 } 512 513 static int tegra_open_channel(struct drm_device *drm, void *data, 514 struct drm_file *file) 515 { 516 struct tegra_drm_file *fpriv = file->driver_priv; 517 struct tegra_drm *tegra = drm->dev_private; 518 struct drm_tegra_open_channel *args = data; 519 struct tegra_drm_context *context; 520 struct tegra_drm_client *client; 521 int err = -ENODEV; 522 523 context = kzalloc(sizeof(*context), GFP_KERNEL); 524 if (!context) 525 return -ENOMEM; 526 527 list_for_each_entry(client, &tegra->clients, list) 528 if (client->base.class == args->client) { 529 err = client->ops->open_channel(client, context); 530 if (err) 531 break; 532 533 list_add(&context->list, &fpriv->contexts); 534 args->context = (uintptr_t)context; 535 context->client = client; 536 return 0; 537 } 538 539 kfree(context); 540 return err; 541 } 542 543 static int tegra_close_channel(struct drm_device *drm, void *data, 544 struct drm_file *file) 545 { 546 struct tegra_drm_file *fpriv = file->driver_priv; 547 struct drm_tegra_close_channel *args = data; 548 struct tegra_drm_context *context; 549 550 context = tegra_drm_get_context(args->context); 551 552 if (!tegra_drm_file_owns_context(fpriv, context)) 553 return -EINVAL; 554 555 list_del(&context->list); 556 tegra_drm_context_free(context); 557 558 return 0; 559 } 560 561 static int tegra_get_syncpt(struct drm_device *drm, void *data, 562 struct drm_file *file) 563 { 564 struct tegra_drm_file *fpriv = file->driver_priv; 565 struct drm_tegra_get_syncpt *args = data; 566 struct tegra_drm_context *context; 567 struct host1x_syncpt *syncpt; 568 569 context = tegra_drm_get_context(args->context); 570 571 if (!tegra_drm_file_owns_context(fpriv, context)) 572 return -ENODEV; 573 574 if (args->index >= context->client->base.num_syncpts) 575 return -EINVAL; 576 577 syncpt = context->client->base.syncpts[args->index]; 578 args->id = host1x_syncpt_id(syncpt); 579 580 return 0; 581 } 582 583 static int tegra_submit(struct drm_device *drm, void *data, 584 struct drm_file *file) 585 { 586 struct tegra_drm_file *fpriv = file->driver_priv; 587 struct drm_tegra_submit *args = data; 588 struct tegra_drm_context *context; 589 590 context = tegra_drm_get_context(args->context); 591 592 if (!tegra_drm_file_owns_context(fpriv, context)) 593 return -ENODEV; 594 595 return context->client->ops->submit(context, args, drm, file); 596 } 597 598 static int tegra_get_syncpt_base(struct drm_device *drm, void *data, 599 struct drm_file *file) 600 { 601 struct tegra_drm_file *fpriv = file->driver_priv; 602 struct drm_tegra_get_syncpt_base *args = data; 603 struct tegra_drm_context *context; 604 struct host1x_syncpt_base *base; 605 struct host1x_syncpt *syncpt; 606 607 context = tegra_drm_get_context(args->context); 608 609 if (!tegra_drm_file_owns_context(fpriv, context)) 610 return -ENODEV; 611 612 if (args->syncpt >= context->client->base.num_syncpts) 613 return -EINVAL; 614 615 syncpt = context->client->base.syncpts[args->syncpt]; 616 617 base = host1x_syncpt_get_base(syncpt); 618 if (!base) 619 return -ENXIO; 620 621 args->id = host1x_syncpt_base_id(base); 622 623 return 0; 624 } 625 626 static int tegra_gem_set_tiling(struct drm_device *drm, void *data, 627 struct drm_file *file) 628 { 629 struct drm_tegra_gem_set_tiling *args = data; 630 enum tegra_bo_tiling_mode mode; 631 struct drm_gem_object *gem; 632 unsigned long value = 0; 633 struct tegra_bo *bo; 634 635 switch (args->mode) { 636 case DRM_TEGRA_GEM_TILING_MODE_PITCH: 637 mode = TEGRA_BO_TILING_MODE_PITCH; 638 639 if (args->value != 0) 640 return -EINVAL; 641 642 break; 643 644 case DRM_TEGRA_GEM_TILING_MODE_TILED: 645 mode = TEGRA_BO_TILING_MODE_TILED; 646 647 if (args->value != 0) 648 return -EINVAL; 649 650 break; 651 652 case DRM_TEGRA_GEM_TILING_MODE_BLOCK: 653 mode = TEGRA_BO_TILING_MODE_BLOCK; 654 655 if (args->value > 5) 656 return -EINVAL; 657 658 value = args->value; 659 break; 660 661 default: 662 return -EINVAL; 663 } 664 665 gem = drm_gem_object_lookup(drm, file, args->handle); 666 if (!gem) 667 return -ENOENT; 668 669 bo = to_tegra_bo(gem); 670 671 bo->tiling.mode = mode; 672 bo->tiling.value = value; 673 674 drm_gem_object_unreference(gem); 675 676 return 0; 677 } 678 679 static int tegra_gem_get_tiling(struct drm_device *drm, void *data, 680 struct drm_file *file) 681 { 682 struct drm_tegra_gem_get_tiling *args = data; 683 struct drm_gem_object *gem; 684 struct tegra_bo *bo; 685 int err = 0; 686 687 gem = drm_gem_object_lookup(drm, file, args->handle); 688 if (!gem) 689 return -ENOENT; 690 691 bo = to_tegra_bo(gem); 692 693 switch (bo->tiling.mode) { 694 case TEGRA_BO_TILING_MODE_PITCH: 695 args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH; 696 args->value = 0; 697 break; 698 699 case TEGRA_BO_TILING_MODE_TILED: 700 args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED; 701 args->value = 0; 702 break; 703 704 case TEGRA_BO_TILING_MODE_BLOCK: 705 args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK; 706 args->value = bo->tiling.value; 707 break; 708 709 default: 710 err = -EINVAL; 711 break; 712 } 713 714 drm_gem_object_unreference(gem); 715 716 return err; 717 } 718 719 static int tegra_gem_set_flags(struct drm_device *drm, void *data, 720 struct drm_file *file) 721 { 722 struct drm_tegra_gem_set_flags *args = data; 723 struct drm_gem_object *gem; 724 struct tegra_bo *bo; 725 726 if (args->flags & ~DRM_TEGRA_GEM_FLAGS) 727 return -EINVAL; 728 729 gem = drm_gem_object_lookup(drm, file, args->handle); 730 if (!gem) 731 return -ENOENT; 732 733 bo = to_tegra_bo(gem); 734 bo->flags = 0; 735 736 if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP) 737 bo->flags |= TEGRA_BO_BOTTOM_UP; 738 739 drm_gem_object_unreference(gem); 740 741 return 0; 742 } 743 744 static int tegra_gem_get_flags(struct drm_device *drm, void *data, 745 struct drm_file *file) 746 { 747 struct drm_tegra_gem_get_flags *args = data; 748 struct drm_gem_object *gem; 749 struct tegra_bo *bo; 750 751 gem = drm_gem_object_lookup(drm, file, args->handle); 752 if (!gem) 753 return -ENOENT; 754 755 bo = to_tegra_bo(gem); 756 args->flags = 0; 757 758 if (bo->flags & TEGRA_BO_BOTTOM_UP) 759 args->flags |= DRM_TEGRA_GEM_BOTTOM_UP; 760 761 drm_gem_object_unreference(gem); 762 763 return 0; 764 } 765 #endif 766 767 static const struct drm_ioctl_desc tegra_drm_ioctls[] = { 768 #ifdef CONFIG_DRM_TEGRA_STAGING 769 DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, DRM_UNLOCKED), 770 DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, DRM_UNLOCKED), 771 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, DRM_UNLOCKED), 772 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, DRM_UNLOCKED), 773 DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, DRM_UNLOCKED), 774 DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, DRM_UNLOCKED), 775 DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, DRM_UNLOCKED), 776 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, DRM_UNLOCKED), 777 DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, DRM_UNLOCKED), 778 DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, DRM_UNLOCKED), 779 DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, DRM_UNLOCKED), 780 DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, DRM_UNLOCKED), 781 DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags, DRM_UNLOCKED), 782 DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags, DRM_UNLOCKED), 783 #endif 784 }; 785 786 static const struct file_operations tegra_drm_fops = { 787 .owner = THIS_MODULE, 788 .open = drm_open, 789 .release = drm_release, 790 .unlocked_ioctl = drm_ioctl, 791 .mmap = tegra_drm_mmap, 792 .poll = drm_poll, 793 .read = drm_read, 794 #ifdef CONFIG_COMPAT 795 .compat_ioctl = drm_compat_ioctl, 796 #endif 797 .llseek = noop_llseek, 798 }; 799 800 static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, 801 unsigned int pipe) 802 { 803 struct drm_crtc *crtc; 804 805 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) { 806 if (pipe == drm_crtc_index(crtc)) 807 return crtc; 808 } 809 810 return NULL; 811 } 812 813 static u32 tegra_drm_get_vblank_counter(struct drm_device *drm, int pipe) 814 { 815 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); 816 817 if (!crtc) 818 return 0; 819 820 /* TODO: implement real hardware counter using syncpoints */ 821 return drm_crtc_vblank_count(crtc); 822 } 823 824 static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe) 825 { 826 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); 827 struct tegra_dc *dc = to_tegra_dc(crtc); 828 829 if (!crtc) 830 return -ENODEV; 831 832 tegra_dc_enable_vblank(dc); 833 834 return 0; 835 } 836 837 static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe) 838 { 839 struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe); 840 struct tegra_dc *dc = to_tegra_dc(crtc); 841 842 if (crtc) 843 tegra_dc_disable_vblank(dc); 844 } 845 846 static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file) 847 { 848 struct tegra_drm_file *fpriv = file->driver_priv; 849 struct tegra_drm_context *context, *tmp; 850 struct drm_crtc *crtc; 851 852 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) 853 tegra_dc_cancel_page_flip(crtc, file); 854 855 list_for_each_entry_safe(context, tmp, &fpriv->contexts, list) 856 tegra_drm_context_free(context); 857 858 kfree(fpriv); 859 } 860 861 #ifdef CONFIG_DEBUG_FS 862 static int tegra_debugfs_framebuffers(struct seq_file *s, void *data) 863 { 864 struct drm_info_node *node = (struct drm_info_node *)s->private; 865 struct drm_device *drm = node->minor->dev; 866 struct drm_framebuffer *fb; 867 868 mutex_lock(&drm->mode_config.fb_lock); 869 870 list_for_each_entry(fb, &drm->mode_config.fb_list, head) { 871 seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n", 872 fb->base.id, fb->width, fb->height, fb->depth, 873 fb->bits_per_pixel, 874 atomic_read(&fb->refcount.refcount)); 875 } 876 877 mutex_unlock(&drm->mode_config.fb_lock); 878 879 return 0; 880 } 881 882 static struct drm_info_list tegra_debugfs_list[] = { 883 { "framebuffers", tegra_debugfs_framebuffers, 0 }, 884 }; 885 886 static int tegra_debugfs_init(struct drm_minor *minor) 887 { 888 return drm_debugfs_create_files(tegra_debugfs_list, 889 ARRAY_SIZE(tegra_debugfs_list), 890 minor->debugfs_root, minor); 891 } 892 893 static void tegra_debugfs_cleanup(struct drm_minor *minor) 894 { 895 drm_debugfs_remove_files(tegra_debugfs_list, 896 ARRAY_SIZE(tegra_debugfs_list), minor); 897 } 898 #endif 899 900 static struct drm_driver tegra_drm_driver = { 901 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, 902 .load = tegra_drm_load, 903 .unload = tegra_drm_unload, 904 .open = tegra_drm_open, 905 .preclose = tegra_drm_preclose, 906 .lastclose = tegra_drm_lastclose, 907 908 .get_vblank_counter = tegra_drm_get_vblank_counter, 909 .enable_vblank = tegra_drm_enable_vblank, 910 .disable_vblank = tegra_drm_disable_vblank, 911 912 #if defined(CONFIG_DEBUG_FS) 913 .debugfs_init = tegra_debugfs_init, 914 .debugfs_cleanup = tegra_debugfs_cleanup, 915 #endif 916 917 .gem_free_object = tegra_bo_free_object, 918 .gem_vm_ops = &tegra_bo_vm_ops, 919 920 .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 921 .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 922 .gem_prime_export = tegra_gem_prime_export, 923 .gem_prime_import = tegra_gem_prime_import, 924 925 .dumb_create = tegra_bo_dumb_create, 926 .dumb_map_offset = tegra_bo_dumb_map_offset, 927 .dumb_destroy = drm_gem_dumb_destroy, 928 929 .ioctls = tegra_drm_ioctls, 930 .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls), 931 .fops = &tegra_drm_fops, 932 933 .name = DRIVER_NAME, 934 .desc = DRIVER_DESC, 935 .date = DRIVER_DATE, 936 .major = DRIVER_MAJOR, 937 .minor = DRIVER_MINOR, 938 .patchlevel = DRIVER_PATCHLEVEL, 939 }; 940 941 int tegra_drm_register_client(struct tegra_drm *tegra, 942 struct tegra_drm_client *client) 943 { 944 mutex_lock(&tegra->clients_lock); 945 list_add_tail(&client->list, &tegra->clients); 946 mutex_unlock(&tegra->clients_lock); 947 948 return 0; 949 } 950 951 int tegra_drm_unregister_client(struct tegra_drm *tegra, 952 struct tegra_drm_client *client) 953 { 954 mutex_lock(&tegra->clients_lock); 955 list_del_init(&client->list); 956 mutex_unlock(&tegra->clients_lock); 957 958 return 0; 959 } 960 961 static int host1x_drm_probe(struct host1x_device *dev) 962 { 963 struct drm_driver *driver = &tegra_drm_driver; 964 struct drm_device *drm; 965 int err; 966 967 drm = drm_dev_alloc(driver, &dev->dev); 968 if (!drm) 969 return -ENOMEM; 970 971 drm_dev_set_unique(drm, dev_name(&dev->dev)); 972 dev_set_drvdata(&dev->dev, drm); 973 974 err = drm_dev_register(drm, 0); 975 if (err < 0) 976 goto unref; 977 978 DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name, 979 driver->major, driver->minor, driver->patchlevel, 980 driver->date, drm->primary->index); 981 982 return 0; 983 984 unref: 985 drm_dev_unref(drm); 986 return err; 987 } 988 989 static int host1x_drm_remove(struct host1x_device *dev) 990 { 991 struct drm_device *drm = dev_get_drvdata(&dev->dev); 992 993 drm_dev_unregister(drm); 994 drm_dev_unref(drm); 995 996 return 0; 997 } 998 999 #ifdef CONFIG_PM_SLEEP 1000 static int host1x_drm_suspend(struct device *dev) 1001 { 1002 struct drm_device *drm = dev_get_drvdata(dev); 1003 1004 drm_kms_helper_poll_disable(drm); 1005 1006 return 0; 1007 } 1008 1009 static int host1x_drm_resume(struct device *dev) 1010 { 1011 struct drm_device *drm = dev_get_drvdata(dev); 1012 1013 drm_kms_helper_poll_enable(drm); 1014 1015 return 0; 1016 } 1017 #endif 1018 1019 static const struct dev_pm_ops host1x_drm_pm_ops = { 1020 SET_SYSTEM_SLEEP_PM_OPS(host1x_drm_suspend, host1x_drm_resume) 1021 }; 1022 1023 static const struct of_device_id host1x_drm_subdevs[] = { 1024 { .compatible = "nvidia,tegra20-dc", }, 1025 { .compatible = "nvidia,tegra20-hdmi", }, 1026 { .compatible = "nvidia,tegra20-gr2d", }, 1027 { .compatible = "nvidia,tegra20-gr3d", }, 1028 { .compatible = "nvidia,tegra30-dc", }, 1029 { .compatible = "nvidia,tegra30-hdmi", }, 1030 { .compatible = "nvidia,tegra30-gr2d", }, 1031 { .compatible = "nvidia,tegra30-gr3d", }, 1032 { .compatible = "nvidia,tegra114-dsi", }, 1033 { .compatible = "nvidia,tegra114-hdmi", }, 1034 { .compatible = "nvidia,tegra114-gr3d", }, 1035 { .compatible = "nvidia,tegra124-dc", }, 1036 { .compatible = "nvidia,tegra124-sor", }, 1037 { .compatible = "nvidia,tegra124-hdmi", }, 1038 { /* sentinel */ } 1039 }; 1040 1041 static struct host1x_driver host1x_drm_driver = { 1042 .driver = { 1043 .name = "drm", 1044 .pm = &host1x_drm_pm_ops, 1045 }, 1046 .probe = host1x_drm_probe, 1047 .remove = host1x_drm_remove, 1048 .subdevs = host1x_drm_subdevs, 1049 }; 1050 1051 static int __init host1x_drm_init(void) 1052 { 1053 int err; 1054 1055 err = host1x_driver_register(&host1x_drm_driver); 1056 if (err < 0) 1057 return err; 1058 1059 err = platform_driver_register(&tegra_dc_driver); 1060 if (err < 0) 1061 goto unregister_host1x; 1062 1063 err = platform_driver_register(&tegra_dsi_driver); 1064 if (err < 0) 1065 goto unregister_dc; 1066 1067 err = platform_driver_register(&tegra_sor_driver); 1068 if (err < 0) 1069 goto unregister_dsi; 1070 1071 err = platform_driver_register(&tegra_hdmi_driver); 1072 if (err < 0) 1073 goto unregister_sor; 1074 1075 err = platform_driver_register(&tegra_dpaux_driver); 1076 if (err < 0) 1077 goto unregister_hdmi; 1078 1079 err = platform_driver_register(&tegra_gr2d_driver); 1080 if (err < 0) 1081 goto unregister_dpaux; 1082 1083 err = platform_driver_register(&tegra_gr3d_driver); 1084 if (err < 0) 1085 goto unregister_gr2d; 1086 1087 return 0; 1088 1089 unregister_gr2d: 1090 platform_driver_unregister(&tegra_gr2d_driver); 1091 unregister_dpaux: 1092 platform_driver_unregister(&tegra_dpaux_driver); 1093 unregister_hdmi: 1094 platform_driver_unregister(&tegra_hdmi_driver); 1095 unregister_sor: 1096 platform_driver_unregister(&tegra_sor_driver); 1097 unregister_dsi: 1098 platform_driver_unregister(&tegra_dsi_driver); 1099 unregister_dc: 1100 platform_driver_unregister(&tegra_dc_driver); 1101 unregister_host1x: 1102 host1x_driver_unregister(&host1x_drm_driver); 1103 return err; 1104 } 1105 module_init(host1x_drm_init); 1106 1107 static void __exit host1x_drm_exit(void) 1108 { 1109 platform_driver_unregister(&tegra_gr3d_driver); 1110 platform_driver_unregister(&tegra_gr2d_driver); 1111 platform_driver_unregister(&tegra_dpaux_driver); 1112 platform_driver_unregister(&tegra_hdmi_driver); 1113 platform_driver_unregister(&tegra_sor_driver); 1114 platform_driver_unregister(&tegra_dsi_driver); 1115 platform_driver_unregister(&tegra_dc_driver); 1116 host1x_driver_unregister(&host1x_drm_driver); 1117 } 1118 module_exit(host1x_drm_exit); 1119 1120 MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>"); 1121 MODULE_DESCRIPTION("NVIDIA Tegra DRM driver"); 1122 MODULE_LICENSE("GPL v2"); 1123