drivers/gpu/drm/tegra/drm.c

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