drivers/gpu/drm/nouveau/nouveau_drm.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24
  25 #include <linux/console.h>
  26 #include <linux/delay.h>
  27 #include <linux/module.h>
  28 #include <linux/pci.h>
  29 #include <linux/pm_runtime.h>
  30 #include <linux/vga_switcheroo.h>
  31
  32 #include <drm/drmP.h>
  33 #include <drm/drm_crtc_helper.h>
  34
  35 #include <core/gpuobj.h>
  36 #include <core/option.h>
  37 #include <core/pci.h>
  38 #include <core/tegra.h>
  39
  40 #include <nvif/driver.h>
  41 #include <nvif/fifo.h>
  42 #include <nvif/user.h>
  43
  44 #include <nvif/class.h>
  45 #include <nvif/cl0002.h>
  46 #include <nvif/cla06f.h>
  47
  48 #include "nouveau_drv.h"
  49 #include "nouveau_dma.h"
  50 #include "nouveau_ttm.h"
  51 #include "nouveau_gem.h"
  52 #include "nouveau_vga.h"
  53 #include "nouveau_led.h"
  54 #include "nouveau_hwmon.h"
  55 #include "nouveau_acpi.h"
  56 #include "nouveau_bios.h"
  57 #include "nouveau_ioctl.h"
  58 #include "nouveau_abi16.h"
  59 #include "nouveau_fbcon.h"
  60 #include "nouveau_fence.h"
  61 #include "nouveau_debugfs.h"
  62 #include "nouveau_usif.h"
  63 #include "nouveau_connector.h"
  64 #include "nouveau_platform.h"
  65
  66 MODULE_PARM_DESC(config, "option string to pass to driver core");
  67 static char *nouveau_config;
  68 module_param_named(config, nouveau_config, charp, 0400);
  69
  70 MODULE_PARM_DESC(debug, "debug string to pass to driver core");
  71 static char *nouveau_debug;
  72 module_param_named(debug, nouveau_debug, charp, 0400);
  73
  74 MODULE_PARM_DESC(noaccel, "disable kernel/abi16 acceleration");
  75 static int nouveau_noaccel = 0;
  76 module_param_named(noaccel, nouveau_noaccel, int, 0400);
  77
  78 MODULE_PARM_DESC(modeset, "enable driver (default: auto, "
  79                           "0 = disabled, 1 = enabled, 2 = headless)");
  80 int nouveau_modeset = -1;
  81 module_param_named(modeset, nouveau_modeset, int, 0400);
  82
  83 MODULE_PARM_DESC(atomic, "Expose atomic ioctl (default: disabled)");
  84 static int nouveau_atomic = 0;
  85 module_param_named(atomic, nouveau_atomic, int, 0400);
  86
  87 MODULE_PARM_DESC(runpm, "disable (0), force enable (1), optimus only default (-1)");
  88 static int nouveau_runtime_pm = -1;
  89 module_param_named(runpm, nouveau_runtime_pm, int, 0400);
  90
  91 static struct drm_driver driver_stub;
  92 static struct drm_driver driver_pci;
  93 static struct drm_driver driver_platform;
  94
  95 static u64
  96 nouveau_pci_name(struct pci_dev *pdev)
  97 {
  98         u64 name = (u64)pci_domain_nr(pdev->bus) << 32;
  99         name |= pdev->bus->number << 16;
 100         name |= PCI_SLOT(pdev->devfn) << 8;
 101         return name | PCI_FUNC(pdev->devfn);
 102 }
 103
 104 static u64
 105 nouveau_platform_name(struct platform_device *platformdev)
 106 {
 107         return platformdev->id;
 108 }
 109
 110 static u64
 111 nouveau_name(struct drm_device *dev)
 112 {
 113         if (dev->pdev)
 114                 return nouveau_pci_name(dev->pdev);
 115         else
 116                 return nouveau_platform_name(to_platform_device(dev->dev));
 117 }
 118
 119 static inline bool
 120 nouveau_cli_work_ready(struct dma_fence *fence)
 121 {
 122         if (!dma_fence_is_signaled(fence))
 123                 return false;
 124         dma_fence_put(fence);
 125         return true;
 126 }
 127
 128 static void
 129 nouveau_cli_work(struct work_struct *w)
 130 {
 131         struct nouveau_cli *cli = container_of(w, typeof(*cli), work);
 132         struct nouveau_cli_work *work, *wtmp;
 133         mutex_lock(&cli->lock);
 134         list_for_each_entry_safe(work, wtmp, &cli->worker, head) {
 135                 if (!work->fence || nouveau_cli_work_ready(work->fence)) {
 136                         list_del(&work->head);
 137                         work->func(work);
 138                 }
 139         }
 140         mutex_unlock(&cli->lock);
 141 }
 142
 143 static void
 144 nouveau_cli_work_fence(struct dma_fence *fence, struct dma_fence_cb *cb)
 145 {
 146         struct nouveau_cli_work *work = container_of(cb, typeof(*work), cb);
 147         schedule_work(&work->cli->work);
 148 }
 149
 150 void
 151 nouveau_cli_work_queue(struct nouveau_cli *cli, struct dma_fence *fence,
 152                        struct nouveau_cli_work *work)
 153 {
 154         work->fence = dma_fence_get(fence);
 155         work->cli = cli;
 156         mutex_lock(&cli->lock);
 157         list_add_tail(&work->head, &cli->worker);
 158         if (dma_fence_add_callback(fence, &work->cb, nouveau_cli_work_fence))
 159                 nouveau_cli_work_fence(fence, &work->cb);
 160         mutex_unlock(&cli->lock);
 161 }
 162
 163 static void
 164 nouveau_cli_fini(struct nouveau_cli *cli)
 165 {
 166         /* All our channels are dead now, which means all the fences they
 167          * own are signalled, and all callback functions have been called.
 168          *
 169          * So, after flushing the workqueue, there should be nothing left.
 170          */
 171         flush_work(&cli->work);
 172         WARN_ON(!list_empty(&cli->worker));
 173
 174         usif_client_fini(cli);
 175         nouveau_vmm_fini(&cli->vmm);
 176         nvif_mmu_fini(&cli->mmu);
 177         nvif_device_fini(&cli->device);
 178         mutex_lock(&cli->drm->master.lock);
 179         nvif_client_fini(&cli->base);
 180         mutex_unlock(&cli->drm->master.lock);
 181 }
 182
 183 static int
 184 nouveau_cli_init(struct nouveau_drm *drm, const char *sname,
 185                  struct nouveau_cli *cli)
 186 {
 187         static const struct nvif_mclass
 188         mems[] = {
 189                 { NVIF_CLASS_MEM_GF100, -1 },
 190                 { NVIF_CLASS_MEM_NV50 , -1 },
 191                 { NVIF_CLASS_MEM_NV04 , -1 },
 192                 {}
 193         };
 194         static const struct nvif_mclass
 195         mmus[] = {
 196                 { NVIF_CLASS_MMU_GF100, -1 },
 197                 { NVIF_CLASS_MMU_NV50 , -1 },
 198                 { NVIF_CLASS_MMU_NV04 , -1 },
 199                 {}
 200         };
 201         static const struct nvif_mclass
 202         vmms[] = {
 203                 { NVIF_CLASS_VMM_GP100, -1 },
 204                 { NVIF_CLASS_VMM_GM200, -1 },
 205                 { NVIF_CLASS_VMM_GF100, -1 },
 206                 { NVIF_CLASS_VMM_NV50 , -1 },
 207                 { NVIF_CLASS_VMM_NV04 , -1 },
 208                 {}
 209         };
 210         u64 device = nouveau_name(drm->dev);
 211         int ret;
 212
 213         snprintf(cli->name, sizeof(cli->name), "%s", sname);
 214         cli->drm = drm;
 215         mutex_init(&cli->mutex);
 216         usif_client_init(cli);
 217
 218         INIT_WORK(&cli->work, nouveau_cli_work);
 219         INIT_LIST_HEAD(&cli->worker);
 220         mutex_init(&cli->lock);
 221
 222         if (cli == &drm->master) {
 223                 ret = nvif_driver_init(NULL, nouveau_config, nouveau_debug,
 224                                        cli->name, device, &cli->base);
 225         } else {
 226                 mutex_lock(&drm->master.lock);
 227                 ret = nvif_client_init(&drm->master.base, cli->name, device,
 228                                        &cli->base);
 229                 mutex_unlock(&drm->master.lock);
 230         }
 231         if (ret) {
 232                 NV_PRINTK(err, cli, "Client allocation failed: %d\n", ret);
 233                 goto done;
 234         }
 235
 236         ret = nvif_device_init(&cli->base.object, 0, NV_DEVICE,
 237                                &(struct nv_device_v0) {
 238                                         .device = ~0,
 239                                }, sizeof(struct nv_device_v0),
 240                                &cli->device);
 241         if (ret) {
 242                 NV_PRINTK(err, cli, "Device allocation failed: %d\n", ret);
 243                 goto done;
 244         }
 245
 246         ret = nvif_mclass(&cli->device.object, mmus);
 247         if (ret < 0) {
 248                 NV_PRINTK(err, cli, "No supported MMU class\n");
 249                 goto done;
 250         }
 251
 252         ret = nvif_mmu_init(&cli->device.object, mmus[ret].oclass, &cli->mmu);
 253         if (ret) {
 254                 NV_PRINTK(err, cli, "MMU allocation failed: %d\n", ret);
 255                 goto done;
 256         }
 257
 258         ret = nvif_mclass(&cli->mmu.object, vmms);
 259         if (ret < 0) {
 260                 NV_PRINTK(err, cli, "No supported VMM class\n");
 261                 goto done;
 262         }
 263
 264         ret = nouveau_vmm_init(cli, vmms[ret].oclass, &cli->vmm);
 265         if (ret) {
 266                 NV_PRINTK(err, cli, "VMM allocation failed: %d\n", ret);
 267                 goto done;
 268         }
 269
 270         ret = nvif_mclass(&cli->mmu.object, mems);
 271         if (ret < 0) {
 272                 NV_PRINTK(err, cli, "No supported MEM class\n");
 273                 goto done;
 274         }
 275
 276         cli->mem = &mems[ret];
 277         return 0;
 278 done:
 279         if (ret)
 280                 nouveau_cli_fini(cli);
 281         return ret;
 282 }
 283
 284 static void
 285 nouveau_accel_ce_fini(struct nouveau_drm *drm)
 286 {
 287         nouveau_channel_idle(drm->cechan);
 288         nvif_object_fini(&drm->ttm.copy);
 289         nouveau_channel_del(&drm->cechan);
 290 }
 291
 292 static void
 293 nouveau_accel_ce_init(struct nouveau_drm *drm)
 294 {
 295         struct nvif_device *device = &drm->client.device;
 296         int ret = 0;
 297
 298         /* Allocate channel that has access to a (preferably async) copy
 299          * engine, to use for TTM buffer moves.
 300          */
 301         if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
 302                 ret = nouveau_channel_new(drm, device,
 303                                           nvif_fifo_runlist_ce(device), 0,
 304                                           true, &drm->cechan);
 305         } else
 306         if (device->info.chipset >= 0xa3 &&
 307             device->info.chipset != 0xaa &&
 308             device->info.chipset != 0xac) {
 309                 /* Prior to Kepler, there's only a single runlist, so all
 310                  * engines can be accessed from any channel.
 311                  *
 312                  * We still want to use a separate channel though.
 313                  */
 314                 ret = nouveau_channel_new(drm, device, NvDmaFB, NvDmaTT, false,
 315                                           &drm->cechan);
 316         }
 317
 318         if (ret)
 319                 NV_ERROR(drm, "failed to create ce channel, %d\n", ret);
 320 }
 321
 322 static void
 323 nouveau_accel_gr_fini(struct nouveau_drm *drm)
 324 {
 325         nouveau_channel_idle(drm->channel);
 326         nvif_object_fini(&drm->ntfy);
 327         nvkm_gpuobj_del(&drm->notify);
 328         nvif_object_fini(&drm->nvsw);
 329         nouveau_channel_del(&drm->channel);
 330 }
 331
 332 static void
 333 nouveau_accel_gr_init(struct nouveau_drm *drm)
 334 {
 335         struct nvif_device *device = &drm->client.device;
 336         u32 arg0, arg1;
 337         int ret;
 338
 339         /* Allocate channel that has access to the graphics engine. */
 340         if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
 341                 arg0 = nvif_fifo_runlist(device, NV_DEVICE_INFO_ENGINE_GR);
 342                 arg1 = 1;
 343         } else {
 344                 arg0 = NvDmaFB;
 345                 arg1 = NvDmaTT;
 346         }
 347
 348         ret = nouveau_channel_new(drm, device, arg0, arg1, false,
 349                                   &drm->channel);
 350         if (ret) {
 351                 NV_ERROR(drm, "failed to create kernel channel, %d\n", ret);
 352                 nouveau_accel_gr_fini(drm);
 353                 return;
 354         }
 355
 356         /* A SW class is used on pre-NV50 HW to assist with handling the
 357          * synchronisation of page flips, as well as to implement fences
 358          * on TNT/TNT2 HW that lacks any kind of support in host.
 359          */
 360         if (device->info.family < NV_DEVICE_INFO_V0_TESLA) {
 361                 ret = nvif_object_init(&drm->channel->user, NVDRM_NVSW,
 362                                        nouveau_abi16_swclass(drm), NULL, 0,
 363                                        &drm->nvsw);
 364                 if (ret == 0) {
 365                         ret = RING_SPACE(drm->channel, 2);
 366                         if (ret == 0) {
 367                                 BEGIN_NV04(drm->channel, NvSubSw, 0, 1);
 368                                 OUT_RING  (drm->channel, drm->nvsw.handle);
 369                         }
 370                 }
 371
 372                 if (ret) {
 373                         NV_ERROR(drm, "failed to allocate sw class, %d\n", ret);
 374                         nouveau_accel_gr_fini(drm);
 375                         return;
 376                 }
 377         }
 378
 379         /* NvMemoryToMemoryFormat requires a notifier ctxdma for some reason,
 380          * even if notification is never requested, so, allocate a ctxdma on
 381          * any GPU where it's possible we'll end up using M2MF for BO moves.
 382          */
 383         if (device->info.family < NV_DEVICE_INFO_V0_FERMI) {
 384                 ret = nvkm_gpuobj_new(nvxx_device(device), 32, 0, false, NULL,
 385                                       &drm->notify);
 386                 if (ret) {
 387                         NV_ERROR(drm, "failed to allocate notifier, %d\n", ret);
 388                         nouveau_accel_gr_fini(drm);
 389                         return;
 390                 }
 391
 392                 ret = nvif_object_init(&drm->channel->user, NvNotify0,
 393                                        NV_DMA_IN_MEMORY,
 394                                        &(struct nv_dma_v0) {
 395                                                 .target = NV_DMA_V0_TARGET_VRAM,
 396                                                 .access = NV_DMA_V0_ACCESS_RDWR,
 397                                                 .start = drm->notify->addr,
 398                                                 .limit = drm->notify->addr + 31
 399                                        }, sizeof(struct nv_dma_v0),
 400                                        &drm->ntfy);
 401                 if (ret) {
 402                         nouveau_accel_gr_fini(drm);
 403                         return;
 404                 }
 405         }
 406 }
 407
 408 static void
 409 nouveau_accel_fini(struct nouveau_drm *drm)
 410 {
 411         nouveau_accel_ce_fini(drm);
 412         nouveau_accel_gr_fini(drm);
 413         if (drm->fence)
 414                 nouveau_fence(drm)->dtor(drm);
 415 }
 416
 417 static void
 418 nouveau_accel_init(struct nouveau_drm *drm)
 419 {
 420         struct nvif_device *device = &drm->client.device;
 421         struct nvif_sclass *sclass;
 422         int ret, i, n;
 423
 424         if (nouveau_noaccel)
 425                 return;
 426
 427         /* Initialise global support for channels, and synchronisation. */
 428         ret = nouveau_channels_init(drm);
 429         if (ret)
 430                 return;
 431
 432         /*XXX: this is crap, but the fence/channel stuff is a little
 433          *     backwards in some places.  this will be fixed.
 434          */
 435         ret = n = nvif_object_sclass_get(&device->object, &sclass);
 436         if (ret < 0)
 437                 return;
 438
 439         for (ret = -ENOSYS, i = 0; i < n; i++) {
 440                 switch (sclass[i].oclass) {
 441                 case NV03_CHANNEL_DMA:
 442                         ret = nv04_fence_create(drm);
 443                         break;
 444                 case NV10_CHANNEL_DMA:
 445                         ret = nv10_fence_create(drm);
 446                         break;
 447                 case NV17_CHANNEL_DMA:
 448                 case NV40_CHANNEL_DMA:
 449                         ret = nv17_fence_create(drm);
 450                         break;
 451                 case NV50_CHANNEL_GPFIFO:
 452                         ret = nv50_fence_create(drm);
 453                         break;
 454                 case G82_CHANNEL_GPFIFO:
 455                         ret = nv84_fence_create(drm);
 456                         break;
 457                 case FERMI_CHANNEL_GPFIFO:
 458                 case KEPLER_CHANNEL_GPFIFO_A:
 459                 case KEPLER_CHANNEL_GPFIFO_B:
 460                 case MAXWELL_CHANNEL_GPFIFO_A:
 461                 case PASCAL_CHANNEL_GPFIFO_A:
 462                 case VOLTA_CHANNEL_GPFIFO_A:
 463                 case TURING_CHANNEL_GPFIFO_A:
 464                         ret = nvc0_fence_create(drm);
 465                         break;
 466                 default:
 467                         break;
 468                 }
 469         }
 470
 471         nvif_object_sclass_put(&sclass);
 472         if (ret) {
 473                 NV_ERROR(drm, "failed to initialise sync subsystem, %d\n", ret);
 474                 nouveau_accel_fini(drm);
 475                 return;
 476         }
 477
 478         /* Volta requires access to a doorbell register for kickoff. */
 479         if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_VOLTA) {
 480                 ret = nvif_user_init(device);
 481                 if (ret)
 482                         return;
 483         }
 484
 485         /* Allocate channels we need to support various functions. */
 486         nouveau_accel_gr_init(drm);
 487         nouveau_accel_ce_init(drm);
 488
 489         /* Initialise accelerated TTM buffer moves. */
 490         nouveau_bo_move_init(drm);
 491 }
 492
 493 static int
 494 nouveau_drm_device_init(struct drm_device *dev)
 495 {
 496         struct nouveau_drm *drm;
 497         int ret;
 498
 499         if (!(drm = kzalloc(sizeof(*drm), GFP_KERNEL)))
 500                 return -ENOMEM;
 501         dev->dev_private = drm;
 502         drm->dev = dev;
 503
 504         ret = nouveau_cli_init(drm, "DRM-master", &drm->master);
 505         if (ret)
 506                 goto fail_alloc;
 507
 508         ret = nouveau_cli_init(drm, "DRM", &drm->client);
 509         if (ret)
 510                 goto fail_master;
 511
 512         dev->irq_enabled = true;
 513
 514         nvxx_client(&drm->client.base)->debug =
 515                 nvkm_dbgopt(nouveau_debug, "DRM");
 516
 517         INIT_LIST_HEAD(&drm->clients);
 518         spin_lock_init(&drm->tile.lock);
 519
 520         /* workaround an odd issue on nvc1 by disabling the device's
 521          * nosnoop capability.  hopefully won't cause issues until a
 522          * better fix is found - assuming there is one...
 523          */
 524         if (drm->client.device.info.chipset == 0xc1)
 525                 nvif_mask(&drm->client.device.object, 0x00088080, 0x00000800, 0x00000000);
 526
 527         nouveau_vga_init(drm);
 528
 529         ret = nouveau_ttm_init(drm);
 530         if (ret)
 531                 goto fail_ttm;
 532
 533         ret = nouveau_bios_init(dev);
 534         if (ret)
 535                 goto fail_bios;
 536
 537         nouveau_accel_init(drm);
 538
 539         ret = nouveau_display_create(dev);
 540         if (ret)
 541                 goto fail_dispctor;
 542
 543         if (dev->mode_config.num_crtc) {
 544                 ret = nouveau_display_init(dev, false, false);
 545                 if (ret)
 546                         goto fail_dispinit;
 547         }
 548
 549         nouveau_debugfs_init(drm);
 550         nouveau_hwmon_init(dev);
 551         nouveau_fbcon_init(dev);
 552         nouveau_led_init(dev);
 553
 554         if (nouveau_pmops_runtime()) {
 555                 pm_runtime_use_autosuspend(dev->dev);
 556                 pm_runtime_set_autosuspend_delay(dev->dev, 5000);
 557                 pm_runtime_set_active(dev->dev);
 558                 pm_runtime_allow(dev->dev);
 559                 pm_runtime_mark_last_busy(dev->dev);
 560                 pm_runtime_put(dev->dev);
 561         }
 562
 563         return 0;
 564
 565 fail_dispinit:
 566         nouveau_display_destroy(dev);
 567 fail_dispctor:
 568         nouveau_accel_fini(drm);
 569         nouveau_bios_takedown(dev);
 570 fail_bios:
 571         nouveau_ttm_fini(drm);
 572 fail_ttm:
 573         nouveau_vga_fini(drm);
 574         nouveau_cli_fini(&drm->client);
 575 fail_master:
 576         nouveau_cli_fini(&drm->master);
 577 fail_alloc:
 578         kfree(drm);
 579         return ret;
 580 }
 581
 582 static void
 583 nouveau_drm_device_fini(struct drm_device *dev)
 584 {
 585         struct nouveau_drm *drm = nouveau_drm(dev);
 586
 587         if (nouveau_pmops_runtime()) {
 588                 pm_runtime_get_sync(dev->dev);
 589                 pm_runtime_forbid(dev->dev);
 590         }
 591
 592         nouveau_led_fini(dev);
 593         nouveau_fbcon_fini(dev);
 594         nouveau_hwmon_fini(dev);
 595         nouveau_debugfs_fini(drm);
 596
 597         if (dev->mode_config.num_crtc)
 598                 nouveau_display_fini(dev, false, false);
 599         nouveau_display_destroy(dev);
 600
 601         nouveau_accel_fini(drm);
 602         nouveau_bios_takedown(dev);
 603
 604         nouveau_ttm_fini(drm);
 605         nouveau_vga_fini(drm);
 606
 607         nouveau_cli_fini(&drm->client);
 608         nouveau_cli_fini(&drm->master);
 609         kfree(drm);
 610 }
 611
 612 static int nouveau_drm_probe(struct pci_dev *pdev,
 613                              const struct pci_device_id *pent)
 614 {
 615         struct nvkm_device *device;
 616         struct drm_device *drm_dev;
 617         struct apertures_struct *aper;
 618         bool boot = false;
 619         int ret;
 620
 621         if (vga_switcheroo_client_probe_defer(pdev))
 622                 return -EPROBE_DEFER;
 623
 624         /* We need to check that the chipset is supported before booting
 625          * fbdev off the hardware, as there's no way to put it back.
 626          */
 627         ret = nvkm_device_pci_new(pdev, NULL, "error", true, false, 0, &device);
 628         if (ret)
 629                 return ret;
 630
 631         nvkm_device_del(&device);
 632
 633         /* Remove conflicting drivers (vesafb, efifb etc). */
 634         aper = alloc_apertures(3);
 635         if (!aper)
 636                 return -ENOMEM;
 637
 638         aper->ranges[0].base = pci_resource_start(pdev, 1);
 639         aper->ranges[0].size = pci_resource_len(pdev, 1);
 640         aper->count = 1;
 641
 642         if (pci_resource_len(pdev, 2)) {
 643                 aper->ranges[aper->count].base = pci_resource_start(pdev, 2);
 644                 aper->ranges[aper->count].size = pci_resource_len(pdev, 2);
 645                 aper->count++;
 646         }
 647
 648         if (pci_resource_len(pdev, 3)) {
 649                 aper->ranges[aper->count].base = pci_resource_start(pdev, 3);
 650                 aper->ranges[aper->count].size = pci_resource_len(pdev, 3);
 651                 aper->count++;
 652         }
 653
 654 #ifdef CONFIG_X86
 655         boot = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 656 #endif
 657         if (nouveau_modeset != 2)
 658                 drm_fb_helper_remove_conflicting_framebuffers(aper, "nouveaufb", boot);
 659         kfree(aper);
 660
 661         ret = nvkm_device_pci_new(pdev, nouveau_config, nouveau_debug,
 662                                   true, true, ~0ULL, &device);
 663         if (ret)
 664                 return ret;
 665
 666         pci_set_master(pdev);
 667
 668         if (nouveau_atomic)
 669                 driver_pci.driver_features |= DRIVER_ATOMIC;
 670
 671         drm_dev = drm_dev_alloc(&driver_pci, &pdev->dev);
 672         if (IS_ERR(drm_dev)) {
 673                 ret = PTR_ERR(drm_dev);
 674                 goto fail_nvkm;
 675         }
 676
 677         ret = pci_enable_device(pdev);
 678         if (ret)
 679                 goto fail_drm;
 680
 681         drm_dev->pdev = pdev;
 682         pci_set_drvdata(pdev, drm_dev);
 683
 684         ret = nouveau_drm_device_init(drm_dev);
 685         if (ret)
 686                 goto fail_pci;
 687
 688         ret = drm_dev_register(drm_dev, pent->driver_data);
 689         if (ret)
 690                 goto fail_drm_dev_init;
 691
 692         return 0;
 693
 694 fail_drm_dev_init:
 695         nouveau_drm_device_fini(drm_dev);
 696 fail_pci:
 697         pci_disable_device(pdev);
 698 fail_drm:
 699         drm_dev_put(drm_dev);
 700 fail_nvkm:
 701         nvkm_device_del(&device);
 702         return ret;
 703 }
 704
 705 void
 706 nouveau_drm_device_remove(struct drm_device *dev)
 707 {
 708         struct pci_dev *pdev = dev->pdev;
 709         struct nouveau_drm *drm = nouveau_drm(dev);
 710         struct nvkm_client *client;
 711         struct nvkm_device *device;
 712
 713         drm_dev_unregister(dev);
 714
 715         dev->irq_enabled = false;
 716         client = nvxx_client(&drm->client.base);
 717         device = nvkm_device_find(client->device);
 718
 719         nouveau_drm_device_fini(dev);
 720         pci_disable_device(pdev);
 721         drm_dev_put(dev);
 722         nvkm_device_del(&device);
 723 }
 724
 725 static void
 726 nouveau_drm_remove(struct pci_dev *pdev)
 727 {
 728         struct drm_device *dev = pci_get_drvdata(pdev);
 729
 730         nouveau_drm_device_remove(dev);
 731 }
 732
 733 static int
 734 nouveau_do_suspend(struct drm_device *dev, bool runtime)
 735 {
 736         struct nouveau_drm *drm = nouveau_drm(dev);
 737         int ret;
 738
 739         nouveau_led_suspend(dev);
 740
 741         if (dev->mode_config.num_crtc) {
 742                 NV_DEBUG(drm, "suspending console...\n");
 743                 nouveau_fbcon_set_suspend(dev, 1);
 744                 NV_DEBUG(drm, "suspending display...\n");
 745                 ret = nouveau_display_suspend(dev, runtime);
 746                 if (ret)
 747                         return ret;
 748         }
 749
 750         NV_DEBUG(drm, "evicting buffers...\n");
 751         ttm_bo_evict_mm(&drm->ttm.bdev, TTM_PL_VRAM);
 752
 753         NV_DEBUG(drm, "waiting for kernel channels to go idle...\n");
 754         if (drm->cechan) {
 755                 ret = nouveau_channel_idle(drm->cechan);
 756                 if (ret)
 757                         goto fail_display;
 758         }
 759
 760         if (drm->channel) {
 761                 ret = nouveau_channel_idle(drm->channel);
 762                 if (ret)
 763                         goto fail_display;
 764         }
 765
 766         NV_DEBUG(drm, "suspending fence...\n");
 767         if (drm->fence && nouveau_fence(drm)->suspend) {
 768                 if (!nouveau_fence(drm)->suspend(drm)) {
 769                         ret = -ENOMEM;
 770                         goto fail_display;
 771                 }
 772         }
 773
 774         NV_DEBUG(drm, "suspending object tree...\n");
 775         ret = nvif_client_suspend(&drm->master.base);
 776         if (ret)
 777                 goto fail_client;
 778
 779         return 0;
 780
 781 fail_client:
 782         if (drm->fence && nouveau_fence(drm)->resume)
 783                 nouveau_fence(drm)->resume(drm);
 784
 785 fail_display:
 786         if (dev->mode_config.num_crtc) {
 787                 NV_DEBUG(drm, "resuming display...\n");
 788                 nouveau_display_resume(dev, runtime);
 789         }
 790         return ret;
 791 }
 792
 793 static int
 794 nouveau_do_resume(struct drm_device *dev, bool runtime)
 795 {
 796         struct nouveau_drm *drm = nouveau_drm(dev);
 797
 798         NV_DEBUG(drm, "resuming object tree...\n");
 799         nvif_client_resume(&drm->master.base);
 800
 801         NV_DEBUG(drm, "resuming fence...\n");
 802         if (drm->fence && nouveau_fence(drm)->resume)
 803                 nouveau_fence(drm)->resume(drm);
 804
 805         nouveau_run_vbios_init(dev);
 806
 807         if (dev->mode_config.num_crtc) {
 808                 NV_DEBUG(drm, "resuming display...\n");
 809                 nouveau_display_resume(dev, runtime);
 810                 NV_DEBUG(drm, "resuming console...\n");
 811                 nouveau_fbcon_set_suspend(dev, 0);
 812         }
 813
 814         nouveau_led_resume(dev);
 815
 816         return 0;
 817 }
 818
 819 int
 820 nouveau_pmops_suspend(struct device *dev)
 821 {
 822         struct pci_dev *pdev = to_pci_dev(dev);
 823         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 824         int ret;
 825
 826         if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
 827             drm_dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
 828                 return 0;
 829
 830         ret = nouveau_do_suspend(drm_dev, false);
 831         if (ret)
 832                 return ret;
 833
 834         pci_save_state(pdev);
 835         pci_disable_device(pdev);
 836         pci_set_power_state(pdev, PCI_D3hot);
 837         udelay(200);
 838         return 0;
 839 }
 840
 841 int
 842 nouveau_pmops_resume(struct device *dev)
 843 {
 844         struct pci_dev *pdev = to_pci_dev(dev);
 845         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 846         int ret;
 847
 848         if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
 849             drm_dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
 850                 return 0;
 851
 852         pci_set_power_state(pdev, PCI_D0);
 853         pci_restore_state(pdev);
 854         ret = pci_enable_device(pdev);
 855         if (ret)
 856                 return ret;
 857         pci_set_master(pdev);
 858
 859         ret = nouveau_do_resume(drm_dev, false);
 860
 861         /* Monitors may have been connected / disconnected during suspend */
 862         schedule_work(&nouveau_drm(drm_dev)->hpd_work);
 863
 864         return ret;
 865 }
 866
 867 static int
 868 nouveau_pmops_freeze(struct device *dev)
 869 {
 870         struct pci_dev *pdev = to_pci_dev(dev);
 871         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 872         return nouveau_do_suspend(drm_dev, false);
 873 }
 874
 875 static int
 876 nouveau_pmops_thaw(struct device *dev)
 877 {
 878         struct pci_dev *pdev = to_pci_dev(dev);
 879         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 880         return nouveau_do_resume(drm_dev, false);
 881 }
 882
 883 bool
 884 nouveau_pmops_runtime(void)
 885 {
 886         if (nouveau_runtime_pm == -1)
 887                 return nouveau_is_optimus() || nouveau_is_v1_dsm();
 888         return nouveau_runtime_pm == 1;
 889 }
 890
 891 static int
 892 nouveau_pmops_runtime_suspend(struct device *dev)
 893 {
 894         struct pci_dev *pdev = to_pci_dev(dev);
 895         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 896         int ret;
 897
 898         if (!nouveau_pmops_runtime()) {
 899                 pm_runtime_forbid(dev);
 900                 return -EBUSY;
 901         }
 902
 903         nouveau_switcheroo_optimus_dsm();
 904         ret = nouveau_do_suspend(drm_dev, true);
 905         pci_save_state(pdev);
 906         pci_disable_device(pdev);
 907         pci_ignore_hotplug(pdev);
 908         pci_set_power_state(pdev, PCI_D3cold);
 909         drm_dev->switch_power_state = DRM_SWITCH_POWER_DYNAMIC_OFF;
 910         return ret;
 911 }
 912
 913 static int
 914 nouveau_pmops_runtime_resume(struct device *dev)
 915 {
 916         struct pci_dev *pdev = to_pci_dev(dev);
 917         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 918         struct nvif_device *device = &nouveau_drm(drm_dev)->client.device;
 919         int ret;
 920
 921         if (!nouveau_pmops_runtime()) {
 922                 pm_runtime_forbid(dev);
 923                 return -EBUSY;
 924         }
 925
 926         pci_set_power_state(pdev, PCI_D0);
 927         pci_restore_state(pdev);
 928         ret = pci_enable_device(pdev);
 929         if (ret)
 930                 return ret;
 931         pci_set_master(pdev);
 932
 933         ret = nouveau_do_resume(drm_dev, true);
 934
 935         /* do magic */
 936         nvif_mask(&device->object, 0x088488, (1 << 25), (1 << 25));
 937         drm_dev->switch_power_state = DRM_SWITCH_POWER_ON;
 938
 939         /* Monitors may have been connected / disconnected during suspend */
 940         schedule_work(&nouveau_drm(drm_dev)->hpd_work);
 941
 942         return ret;
 943 }
 944
 945 static int
 946 nouveau_pmops_runtime_idle(struct device *dev)
 947 {
 948         if (!nouveau_pmops_runtime()) {
 949                 pm_runtime_forbid(dev);
 950                 return -EBUSY;
 951         }
 952
 953         pm_runtime_mark_last_busy(dev);
 954         pm_runtime_autosuspend(dev);
 955         /* we don't want the main rpm_idle to call suspend - we want to autosuspend */
 956         return 1;
 957 }
 958
 959 static int
 960 nouveau_drm_open(struct drm_device *dev, struct drm_file *fpriv)
 961 {
 962         struct nouveau_drm *drm = nouveau_drm(dev);
 963         struct nouveau_cli *cli;
 964         char name[32], tmpname[TASK_COMM_LEN];
 965         int ret;
 966
 967         /* need to bring up power immediately if opening device */
 968         ret = pm_runtime_get_sync(dev->dev);
 969         if (ret < 0 && ret != -EACCES)
 970                 return ret;
 971
 972         get_task_comm(tmpname, current);
 973         snprintf(name, sizeof(name), "%s[%d]", tmpname, pid_nr(fpriv->pid));
 974
 975         if (!(cli = kzalloc(sizeof(*cli), GFP_KERNEL))) {
 976                 ret = -ENOMEM;
 977                 goto done;
 978         }
 979
 980         ret = nouveau_cli_init(drm, name, cli);
 981         if (ret)
 982                 goto done;
 983
 984         cli->base.super = false;
 985
 986         fpriv->driver_priv = cli;
 987
 988         mutex_lock(&drm->client.mutex);
 989         list_add(&cli->head, &drm->clients);
 990         mutex_unlock(&drm->client.mutex);
 991
 992 done:
 993         if (ret && cli) {
 994                 nouveau_cli_fini(cli);
 995                 kfree(cli);
 996         }
 997
 998         pm_runtime_mark_last_busy(dev->dev);
 999         pm_runtime_put_autosuspend(dev->dev);
1000         return ret;
1001 }
1002
1003 static void
1004 nouveau_drm_postclose(struct drm_device *dev, struct drm_file *fpriv)
1005 {
1006         struct nouveau_cli *cli = nouveau_cli(fpriv);
1007         struct nouveau_drm *drm = nouveau_drm(dev);
1008
1009         pm_runtime_get_sync(dev->dev);
1010
1011         mutex_lock(&cli->mutex);
1012         if (cli->abi16)
1013                 nouveau_abi16_fini(cli->abi16);
1014         mutex_unlock(&cli->mutex);
1015
1016         mutex_lock(&drm->client.mutex);
1017         list_del(&cli->head);
1018         mutex_unlock(&drm->client.mutex);
1019
1020         nouveau_cli_fini(cli);
1021         kfree(cli);
1022         pm_runtime_mark_last_busy(dev->dev);
1023         pm_runtime_put_autosuspend(dev->dev);
1024 }
1025
1026 static const struct drm_ioctl_desc
1027 nouveau_ioctls[] = {
1028         DRM_IOCTL_DEF_DRV(NOUVEAU_GETPARAM, nouveau_abi16_ioctl_getparam, DRM_AUTH|DRM_RENDER_ALLOW),
1029         DRM_IOCTL_DEF_DRV(NOUVEAU_SETPARAM, nouveau_abi16_ioctl_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1030         DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_ALLOC, nouveau_abi16_ioctl_channel_alloc, DRM_AUTH|DRM_RENDER_ALLOW),
1031         DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_FREE, nouveau_abi16_ioctl_channel_free, DRM_AUTH|DRM_RENDER_ALLOW),
1032         DRM_IOCTL_DEF_DRV(NOUVEAU_GROBJ_ALLOC, nouveau_abi16_ioctl_grobj_alloc, DRM_AUTH|DRM_RENDER_ALLOW),
1033         DRM_IOCTL_DEF_DRV(NOUVEAU_NOTIFIEROBJ_ALLOC, nouveau_abi16_ioctl_notifierobj_alloc, DRM_AUTH|DRM_RENDER_ALLOW),
1034         DRM_IOCTL_DEF_DRV(NOUVEAU_GPUOBJ_FREE, nouveau_abi16_ioctl_gpuobj_free, DRM_AUTH|DRM_RENDER_ALLOW),
1035         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_NEW, nouveau_gem_ioctl_new, DRM_AUTH|DRM_RENDER_ALLOW),
1036         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_PUSHBUF, nouveau_gem_ioctl_pushbuf, DRM_AUTH|DRM_RENDER_ALLOW),
1037         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_PREP, nouveau_gem_ioctl_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
1038         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_FINI, nouveau_gem_ioctl_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
1039         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_INFO, nouveau_gem_ioctl_info, DRM_AUTH|DRM_RENDER_ALLOW),
1040 };
1041
1042 long
1043 nouveau_drm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1044 {
1045         struct drm_file *filp = file->private_data;
1046         struct drm_device *dev = filp->minor->dev;
1047         long ret;
1048
1049         ret = pm_runtime_get_sync(dev->dev);
1050         if (ret < 0 && ret != -EACCES)
1051                 return ret;
1052
1053         switch (_IOC_NR(cmd) - DRM_COMMAND_BASE) {
1054         case DRM_NOUVEAU_NVIF:
1055                 ret = usif_ioctl(filp, (void __user *)arg, _IOC_SIZE(cmd));
1056                 break;
1057         default:
1058                 ret = drm_ioctl(file, cmd, arg);
1059                 break;
1060         }
1061
1062         pm_runtime_mark_last_busy(dev->dev);
1063         pm_runtime_put_autosuspend(dev->dev);
1064         return ret;
1065 }
1066
1067 static const struct file_operations
1068 nouveau_driver_fops = {
1069         .owner = THIS_MODULE,
1070         .open = drm_open,
1071         .release = drm_release,
1072         .unlocked_ioctl = nouveau_drm_ioctl,
1073         .mmap = nouveau_ttm_mmap,
1074         .poll = drm_poll,
1075         .read = drm_read,
1076 #if defined(CONFIG_COMPAT)
1077         .compat_ioctl = nouveau_compat_ioctl,
1078 #endif
1079         .llseek = noop_llseek,
1080 };
1081
1082 static struct drm_driver
1083 driver_stub = {
1084         .driver_features =
1085                 DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER |
1086                 DRIVER_KMS_LEGACY_CONTEXT,
1087
1088         .open = nouveau_drm_open,
1089         .postclose = nouveau_drm_postclose,
1090         .lastclose = nouveau_vga_lastclose,
1091
1092 #if defined(CONFIG_DEBUG_FS)
1093         .debugfs_init = nouveau_drm_debugfs_init,
1094 #endif
1095
1096         .enable_vblank = nouveau_display_vblank_enable,
1097         .disable_vblank = nouveau_display_vblank_disable,
1098         .get_scanout_position = nouveau_display_scanoutpos,
1099         .get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos,
1100
1101         .ioctls = nouveau_ioctls,
1102         .num_ioctls = ARRAY_SIZE(nouveau_ioctls),
1103         .fops = &nouveau_driver_fops,
1104
1105         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1106         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1107         .gem_prime_export = drm_gem_prime_export,
1108         .gem_prime_import = drm_gem_prime_import,
1109         .gem_prime_pin = nouveau_gem_prime_pin,
1110         .gem_prime_res_obj = nouveau_gem_prime_res_obj,
1111         .gem_prime_unpin = nouveau_gem_prime_unpin,
1112         .gem_prime_get_sg_table = nouveau_gem_prime_get_sg_table,
1113         .gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table,
1114         .gem_prime_vmap = nouveau_gem_prime_vmap,
1115         .gem_prime_vunmap = nouveau_gem_prime_vunmap,
1116
1117         .gem_free_object_unlocked = nouveau_gem_object_del,
1118         .gem_open_object = nouveau_gem_object_open,
1119         .gem_close_object = nouveau_gem_object_close,
1120
1121         .dumb_create = nouveau_display_dumb_create,
1122         .dumb_map_offset = nouveau_display_dumb_map_offset,
1123
1124         .name = DRIVER_NAME,
1125         .desc = DRIVER_DESC,
1126 #ifdef GIT_REVISION
1127         .date = GIT_REVISION,
1128 #else
1129         .date = DRIVER_DATE,
1130 #endif
1131         .major = DRIVER_MAJOR,
1132         .minor = DRIVER_MINOR,
1133         .patchlevel = DRIVER_PATCHLEVEL,
1134 };
1135
1136 static struct pci_device_id
1137 nouveau_drm_pci_table[] = {
1138         {
1139                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
1140                 .class = PCI_BASE_CLASS_DISPLAY << 16,
1141                 .class_mask  = 0xff << 16,
1142         },
1143         {
1144                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA_SGS, PCI_ANY_ID),
1145                 .class = PCI_BASE_CLASS_DISPLAY << 16,
1146                 .class_mask  = 0xff << 16,
1147         },
1148         {}
1149 };
1150
1151 static void nouveau_display_options(void)
1152 {
1153         DRM_DEBUG_DRIVER("Loading Nouveau with parameters:\n");
1154
1155         DRM_DEBUG_DRIVER("... tv_disable   : %d\n", nouveau_tv_disable);
1156         DRM_DEBUG_DRIVER("... ignorelid    : %d\n", nouveau_ignorelid);
1157         DRM_DEBUG_DRIVER("... duallink     : %d\n", nouveau_duallink);
1158         DRM_DEBUG_DRIVER("... nofbaccel    : %d\n", nouveau_nofbaccel);
1159         DRM_DEBUG_DRIVER("... config       : %s\n", nouveau_config);
1160         DRM_DEBUG_DRIVER("... debug        : %s\n", nouveau_debug);
1161         DRM_DEBUG_DRIVER("... noaccel      : %d\n", nouveau_noaccel);
1162         DRM_DEBUG_DRIVER("... modeset      : %d\n", nouveau_modeset);
1163         DRM_DEBUG_DRIVER("... runpm        : %d\n", nouveau_runtime_pm);
1164         DRM_DEBUG_DRIVER("... vram_pushbuf : %d\n", nouveau_vram_pushbuf);
1165         DRM_DEBUG_DRIVER("... hdmimhz      : %d\n", nouveau_hdmimhz);
1166 }
1167
1168 static const struct dev_pm_ops nouveau_pm_ops = {
1169         .suspend = nouveau_pmops_suspend,
1170         .resume = nouveau_pmops_resume,
1171         .freeze = nouveau_pmops_freeze,
1172         .thaw = nouveau_pmops_thaw,
1173         .poweroff = nouveau_pmops_freeze,
1174         .restore = nouveau_pmops_resume,
1175         .runtime_suspend = nouveau_pmops_runtime_suspend,
1176         .runtime_resume = nouveau_pmops_runtime_resume,
1177         .runtime_idle = nouveau_pmops_runtime_idle,
1178 };
1179
1180 static struct pci_driver
1181 nouveau_drm_pci_driver = {
1182         .name = "nouveau",
1183         .id_table = nouveau_drm_pci_table,
1184         .probe = nouveau_drm_probe,
1185         .remove = nouveau_drm_remove,
1186         .driver.pm = &nouveau_pm_ops,
1187 };
1188
1189 struct drm_device *
1190 nouveau_platform_device_create(const struct nvkm_device_tegra_func *func,
1191                                struct platform_device *pdev,
1192                                struct nvkm_device **pdevice)
1193 {
1194         struct drm_device *drm;
1195         int err;
1196
1197         err = nvkm_device_tegra_new(func, pdev, nouveau_config, nouveau_debug,
1198                                     true, true, ~0ULL, pdevice);
1199         if (err)
1200                 goto err_free;
1201
1202         drm = drm_dev_alloc(&driver_platform, &pdev->dev);
1203         if (IS_ERR(drm)) {
1204                 err = PTR_ERR(drm);
1205                 goto err_free;
1206         }
1207
1208         err = nouveau_drm_device_init(drm);
1209         if (err)
1210                 goto err_put;
1211
1212         platform_set_drvdata(pdev, drm);
1213
1214         return drm;
1215
1216 err_put:
1217         drm_dev_put(drm);
1218 err_free:
1219         nvkm_device_del(pdevice);
1220
1221         return ERR_PTR(err);
1222 }
1223
1224 static int __init
1225 nouveau_drm_init(void)
1226 {
1227         driver_pci = driver_stub;
1228         driver_platform = driver_stub;
1229
1230         nouveau_display_options();
1231
1232         if (nouveau_modeset == -1) {
1233                 if (vgacon_text_force())
1234                         nouveau_modeset = 0;
1235         }
1236
1237         if (!nouveau_modeset)
1238                 return 0;
1239
1240 #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
1241         platform_driver_register(&nouveau_platform_driver);
1242 #endif
1243
1244         nouveau_register_dsm_handler();
1245         nouveau_backlight_ctor();
1246
1247 #ifdef CONFIG_PCI
1248         return pci_register_driver(&nouveau_drm_pci_driver);
1249 #else
1250         return 0;
1251 #endif
1252 }
1253
1254 static void __exit
1255 nouveau_drm_exit(void)
1256 {
1257         if (!nouveau_modeset)
1258                 return;
1259
1260 #ifdef CONFIG_PCI
1261         pci_unregister_driver(&nouveau_drm_pci_driver);
1262 #endif
1263         nouveau_backlight_dtor();
1264         nouveau_unregister_dsm_handler();
1265
1266 #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
1267         platform_driver_unregister(&nouveau_platform_driver);
1268 #endif
1269 }
1270
1271 module_init(nouveau_drm_init);
1272 module_exit(nouveau_drm_exit);
1273
1274 MODULE_DEVICE_TABLE(pci, nouveau_drm_pci_table);
1275 MODULE_AUTHOR(DRIVER_AUTHOR);
1276 MODULE_DESCRIPTION(DRIVER_DESC);
1277 MODULE_LICENSE("GPL and additional rights");