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
  42 #include <nvif/class.h>
  43 #include <nvif/cl0002.h>
  44 #include <nvif/cla06f.h>
  45 #include <nvif/if0004.h>
  46
  47 #include "nouveau_drv.h"
  48 #include "nouveau_dma.h"
  49 #include "nouveau_ttm.h"
  50 #include "nouveau_gem.h"
  51 #include "nouveau_vga.h"
  52 #include "nouveau_led.h"
  53 #include "nouveau_hwmon.h"
  54 #include "nouveau_acpi.h"
  55 #include "nouveau_bios.h"
  56 #include "nouveau_ioctl.h"
  57 #include "nouveau_abi16.h"
  58 #include "nouveau_fbcon.h"
  59 #include "nouveau_fence.h"
  60 #include "nouveau_debugfs.h"
  61 #include "nouveau_usif.h"
  62 #include "nouveau_connector.h"
  63 #include "nouveau_platform.h"
  64
  65 MODULE_PARM_DESC(config, "option string to pass to driver core");
  66 static char *nouveau_config;
  67 module_param_named(config, nouveau_config, charp, 0400);
  68
  69 MODULE_PARM_DESC(debug, "debug string to pass to driver core");
  70 static char *nouveau_debug;
  71 module_param_named(debug, nouveau_debug, charp, 0400);
  72
  73 MODULE_PARM_DESC(noaccel, "disable kernel/abi16 acceleration");
  74 static int nouveau_noaccel = 0;
  75 module_param_named(noaccel, nouveau_noaccel, int, 0400);
  76
  77 MODULE_PARM_DESC(modeset, "enable driver (default: auto, "
  78                           "0 = disabled, 1 = enabled, 2 = headless)");
  79 int nouveau_modeset = -1;
  80 module_param_named(modeset, nouveau_modeset, int, 0400);
  81
  82 MODULE_PARM_DESC(runpm, "disable (0), force enable (1), optimus only default (-1)");
  83 static int nouveau_runtime_pm = -1;
  84 module_param_named(runpm, nouveau_runtime_pm, int, 0400);
  85
  86 static struct drm_driver driver_stub;
  87 static struct drm_driver driver_pci;
  88 static struct drm_driver driver_platform;
  89
  90 static u64
  91 nouveau_pci_name(struct pci_dev *pdev)
  92 {
  93         u64 name = (u64)pci_domain_nr(pdev->bus) << 32;
  94         name |= pdev->bus->number << 16;
  95         name |= PCI_SLOT(pdev->devfn) << 8;
  96         return name | PCI_FUNC(pdev->devfn);
  97 }
  98
  99 static u64
 100 nouveau_platform_name(struct platform_device *platformdev)
 101 {
 102         return platformdev->id;
 103 }
 104
 105 static u64
 106 nouveau_name(struct drm_device *dev)
 107 {
 108         if (dev->pdev)
 109                 return nouveau_pci_name(dev->pdev);
 110         else
 111                 return nouveau_platform_name(to_platform_device(dev->dev));
 112 }
 113
 114 static inline bool
 115 nouveau_cli_work_ready(struct dma_fence *fence, bool wait)
 116 {
 117         if (!dma_fence_is_signaled(fence)) {
 118                 if (!wait)
 119                         return false;
 120                 WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
 121         }
 122         dma_fence_put(fence);
 123         return true;
 124 }
 125
 126 static void
 127 nouveau_cli_work_flush(struct nouveau_cli *cli, bool wait)
 128 {
 129         struct nouveau_cli_work *work, *wtmp;
 130         mutex_lock(&cli->lock);
 131         list_for_each_entry_safe(work, wtmp, &cli->worker, head) {
 132                 if (!work->fence || nouveau_cli_work_ready(work->fence, wait)) {
 133                         list_del(&work->head);
 134                         work->func(work);
 135                 }
 136         }
 137         mutex_unlock(&cli->lock);
 138 }
 139
 140 static void
 141 nouveau_cli_work_fence(struct dma_fence *fence, struct dma_fence_cb *cb)
 142 {
 143         struct nouveau_cli_work *work = container_of(cb, typeof(*work), cb);
 144         schedule_work(&work->cli->work);
 145 }
 146
 147 void
 148 nouveau_cli_work_queue(struct nouveau_cli *cli, struct dma_fence *fence,
 149                        struct nouveau_cli_work *work)
 150 {
 151         work->fence = dma_fence_get(fence);
 152         work->cli = cli;
 153         mutex_lock(&cli->lock);
 154         list_add_tail(&work->head, &cli->worker);
 155         if (dma_fence_add_callback(fence, &work->cb, nouveau_cli_work_fence))
 156                 nouveau_cli_work_fence(fence, &work->cb);
 157         mutex_unlock(&cli->lock);
 158 }
 159
 160 static void
 161 nouveau_cli_work(struct work_struct *w)
 162 {
 163         struct nouveau_cli *cli = container_of(w, typeof(*cli), work);
 164         nouveau_cli_work_flush(cli, false);
 165 }
 166
 167 static void
 168 nouveau_cli_fini(struct nouveau_cli *cli)
 169 {
 170         nouveau_cli_work_flush(cli, true);
 171         usif_client_fini(cli);
 172         nouveau_vmm_fini(&cli->vmm);
 173         nvif_mmu_fini(&cli->mmu);
 174         nvif_device_fini(&cli->device);
 175         mutex_lock(&cli->drm->master.lock);
 176         nvif_client_fini(&cli->base);
 177         mutex_unlock(&cli->drm->master.lock);
 178 }
 179
 180 static int
 181 nouveau_cli_init(struct nouveau_drm *drm, const char *sname,
 182                  struct nouveau_cli *cli)
 183 {
 184         static const struct nvif_mclass
 185         mems[] = {
 186                 { NVIF_CLASS_MEM_GF100, -1 },
 187                 { NVIF_CLASS_MEM_NV50 , -1 },
 188                 { NVIF_CLASS_MEM_NV04 , -1 },
 189                 {}
 190         };
 191         static const struct nvif_mclass
 192         mmus[] = {
 193                 { NVIF_CLASS_MMU_GF100, -1 },
 194                 { NVIF_CLASS_MMU_NV50 , -1 },
 195                 { NVIF_CLASS_MMU_NV04 , -1 },
 196                 {}
 197         };
 198         static const struct nvif_mclass
 199         vmms[] = {
 200                 { NVIF_CLASS_VMM_GP100, -1 },
 201                 { NVIF_CLASS_VMM_GM200, -1 },
 202                 { NVIF_CLASS_VMM_GF100, -1 },
 203                 { NVIF_CLASS_VMM_NV50 , -1 },
 204                 { NVIF_CLASS_VMM_NV04 , -1 },
 205                 {}
 206         };
 207         u64 device = nouveau_name(drm->dev);
 208         int ret;
 209
 210         snprintf(cli->name, sizeof(cli->name), "%s", sname);
 211         cli->drm = drm;
 212         mutex_init(&cli->mutex);
 213         usif_client_init(cli);
 214
 215         INIT_WORK(&cli->work, nouveau_cli_work);
 216         INIT_LIST_HEAD(&cli->worker);
 217         mutex_init(&cli->lock);
 218
 219         if (cli == &drm->master) {
 220                 ret = nvif_driver_init(NULL, nouveau_config, nouveau_debug,
 221                                        cli->name, device, &cli->base);
 222         } else {
 223                 mutex_lock(&drm->master.lock);
 224                 ret = nvif_client_init(&drm->master.base, cli->name, device,
 225                                        &cli->base);
 226                 mutex_unlock(&drm->master.lock);
 227         }
 228         if (ret) {
 229                 NV_ERROR(drm, "Client allocation failed: %d\n", ret);
 230                 goto done;
 231         }
 232
 233         ret = nvif_device_init(&cli->base.object, 0, NV_DEVICE,
 234                                &(struct nv_device_v0) {
 235                                         .device = ~0,
 236                                }, sizeof(struct nv_device_v0),
 237                                &cli->device);
 238         if (ret) {
 239                 NV_ERROR(drm, "Device allocation failed: %d\n", ret);
 240                 goto done;
 241         }
 242
 243         ret = nvif_mclass(&cli->device.object, mmus);
 244         if (ret < 0) {
 245                 NV_ERROR(drm, "No supported MMU class\n");
 246                 goto done;
 247         }
 248
 249         ret = nvif_mmu_init(&cli->device.object, mmus[ret].oclass, &cli->mmu);
 250         if (ret) {
 251                 NV_ERROR(drm, "MMU allocation failed: %d\n", ret);
 252                 goto done;
 253         }
 254
 255         ret = nvif_mclass(&cli->mmu.object, vmms);
 256         if (ret < 0) {
 257                 NV_ERROR(drm, "No supported VMM class\n");
 258                 goto done;
 259         }
 260
 261         ret = nouveau_vmm_init(cli, vmms[ret].oclass, &cli->vmm);
 262         if (ret) {
 263                 NV_ERROR(drm, "VMM allocation failed: %d\n", ret);
 264                 goto done;
 265         }
 266
 267         ret = nvif_mclass(&cli->mmu.object, mems);
 268         if (ret < 0) {
 269                 NV_ERROR(drm, "No supported MEM class\n");
 270                 goto done;
 271         }
 272
 273         cli->mem = &mems[ret];
 274         return 0;
 275 done:
 276         if (ret)
 277                 nouveau_cli_fini(cli);
 278         return ret;
 279 }
 280
 281 static void
 282 nouveau_accel_fini(struct nouveau_drm *drm)
 283 {
 284         nouveau_channel_idle(drm->channel);
 285         nvif_object_fini(&drm->ntfy);
 286         nvkm_gpuobj_del(&drm->notify);
 287         nvif_notify_fini(&drm->flip);
 288         nvif_object_fini(&drm->nvsw);
 289         nouveau_channel_del(&drm->channel);
 290
 291         nouveau_channel_idle(drm->cechan);
 292         nvif_object_fini(&drm->ttm.copy);
 293         nouveau_channel_del(&drm->cechan);
 294
 295         if (drm->fence)
 296                 nouveau_fence(drm)->dtor(drm);
 297 }
 298
 299 static void
 300 nouveau_accel_init(struct nouveau_drm *drm)
 301 {
 302         struct nvif_device *device = &drm->client.device;
 303         struct nvif_sclass *sclass;
 304         u32 arg0, arg1;
 305         int ret, i, n;
 306
 307         if (nouveau_noaccel)
 308                 return;
 309
 310         /* initialise synchronisation routines */
 311         /*XXX: this is crap, but the fence/channel stuff is a little
 312          *     backwards in some places.  this will be fixed.
 313          */
 314         ret = n = nvif_object_sclass_get(&device->object, &sclass);
 315         if (ret < 0)
 316                 return;
 317
 318         for (ret = -ENOSYS, i = 0; i < n; i++) {
 319                 switch (sclass[i].oclass) {
 320                 case NV03_CHANNEL_DMA:
 321                         ret = nv04_fence_create(drm);
 322                         break;
 323                 case NV10_CHANNEL_DMA:
 324                         ret = nv10_fence_create(drm);
 325                         break;
 326                 case NV17_CHANNEL_DMA:
 327                 case NV40_CHANNEL_DMA:
 328                         ret = nv17_fence_create(drm);
 329                         break;
 330                 case NV50_CHANNEL_GPFIFO:
 331                         ret = nv50_fence_create(drm);
 332                         break;
 333                 case G82_CHANNEL_GPFIFO:
 334                         ret = nv84_fence_create(drm);
 335                         break;
 336                 case FERMI_CHANNEL_GPFIFO:
 337                 case KEPLER_CHANNEL_GPFIFO_A:
 338                 case KEPLER_CHANNEL_GPFIFO_B:
 339                 case MAXWELL_CHANNEL_GPFIFO_A:
 340                 case PASCAL_CHANNEL_GPFIFO_A:
 341                         ret = nvc0_fence_create(drm);
 342                         break;
 343                 default:
 344                         break;
 345                 }
 346         }
 347
 348         nvif_object_sclass_put(&sclass);
 349         if (ret) {
 350                 NV_ERROR(drm, "failed to initialise sync subsystem, %d\n", ret);
 351                 nouveau_accel_fini(drm);
 352                 return;
 353         }
 354
 355         if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
 356                 ret = nouveau_channel_new(drm, &drm->client.device,
 357                                           NVA06F_V0_ENGINE_CE0 |
 358                                           NVA06F_V0_ENGINE_CE1,
 359                                           0, &drm->cechan);
 360                 if (ret)
 361                         NV_ERROR(drm, "failed to create ce channel, %d\n", ret);
 362
 363                 arg0 = NVA06F_V0_ENGINE_GR;
 364                 arg1 = 1;
 365         } else
 366         if (device->info.chipset >= 0xa3 &&
 367             device->info.chipset != 0xaa &&
 368             device->info.chipset != 0xac) {
 369                 ret = nouveau_channel_new(drm, &drm->client.device,
 370                                           NvDmaFB, NvDmaTT, &drm->cechan);
 371                 if (ret)
 372                         NV_ERROR(drm, "failed to create ce channel, %d\n", ret);
 373
 374                 arg0 = NvDmaFB;
 375                 arg1 = NvDmaTT;
 376         } else {
 377                 arg0 = NvDmaFB;
 378                 arg1 = NvDmaTT;
 379         }
 380
 381         ret = nouveau_channel_new(drm, &drm->client.device,
 382                                   arg0, arg1, &drm->channel);
 383         if (ret) {
 384                 NV_ERROR(drm, "failed to create kernel channel, %d\n", ret);
 385                 nouveau_accel_fini(drm);
 386                 return;
 387         }
 388
 389         ret = nvif_object_init(&drm->channel->user, NVDRM_NVSW,
 390                                nouveau_abi16_swclass(drm), NULL, 0, &drm->nvsw);
 391         if (ret == 0) {
 392                 ret = RING_SPACE(drm->channel, 2);
 393                 if (ret == 0) {
 394                         if (device->info.family < NV_DEVICE_INFO_V0_FERMI) {
 395                                 BEGIN_NV04(drm->channel, NvSubSw, 0, 1);
 396                                 OUT_RING  (drm->channel, NVDRM_NVSW);
 397                         } else
 398                         if (device->info.family < NV_DEVICE_INFO_V0_KEPLER) {
 399                                 BEGIN_NVC0(drm->channel, FermiSw, 0, 1);
 400                                 OUT_RING  (drm->channel, 0x001f0000);
 401                         }
 402                 }
 403
 404                 ret = nvif_notify_init(&drm->nvsw, nouveau_flip_complete,
 405                                        false, NV04_NVSW_NTFY_UEVENT,
 406                                        NULL, 0, 0, &drm->flip);
 407                 if (ret == 0)
 408                         ret = nvif_notify_get(&drm->flip);
 409                 if (ret) {
 410                         nouveau_accel_fini(drm);
 411                         return;
 412                 }
 413         }
 414
 415         if (ret) {
 416                 NV_ERROR(drm, "failed to allocate software object, %d\n", ret);
 417                 nouveau_accel_fini(drm);
 418                 return;
 419         }
 420
 421         if (device->info.family < NV_DEVICE_INFO_V0_FERMI) {
 422                 ret = nvkm_gpuobj_new(nvxx_device(&drm->client.device), 32, 0,
 423                                       false, NULL, &drm->notify);
 424                 if (ret) {
 425                         NV_ERROR(drm, "failed to allocate notifier, %d\n", ret);
 426                         nouveau_accel_fini(drm);
 427                         return;
 428                 }
 429
 430                 ret = nvif_object_init(&drm->channel->user, NvNotify0,
 431                                        NV_DMA_IN_MEMORY,
 432                                        &(struct nv_dma_v0) {
 433                                                 .target = NV_DMA_V0_TARGET_VRAM,
 434                                                 .access = NV_DMA_V0_ACCESS_RDWR,
 435                                                 .start = drm->notify->addr,
 436                                                 .limit = drm->notify->addr + 31
 437                                        }, sizeof(struct nv_dma_v0),
 438                                        &drm->ntfy);
 439                 if (ret) {
 440                         nouveau_accel_fini(drm);
 441                         return;
 442                 }
 443         }
 444
 445
 446         nouveau_bo_move_init(drm);
 447 }
 448
 449 static int nouveau_drm_probe(struct pci_dev *pdev,
 450                              const struct pci_device_id *pent)
 451 {
 452         struct nvkm_device *device;
 453         struct apertures_struct *aper;
 454         bool boot = false;
 455         int ret;
 456
 457         if (vga_switcheroo_client_probe_defer(pdev))
 458                 return -EPROBE_DEFER;
 459
 460         /* We need to check that the chipset is supported before booting
 461          * fbdev off the hardware, as there's no way to put it back.
 462          */
 463         ret = nvkm_device_pci_new(pdev, NULL, "error", true, false, 0, &device);
 464         if (ret)
 465                 return ret;
 466
 467         nvkm_device_del(&device);
 468
 469         /* Remove conflicting drivers (vesafb, efifb etc). */
 470         aper = alloc_apertures(3);
 471         if (!aper)
 472                 return -ENOMEM;
 473
 474         aper->ranges[0].base = pci_resource_start(pdev, 1);
 475         aper->ranges[0].size = pci_resource_len(pdev, 1);
 476         aper->count = 1;
 477
 478         if (pci_resource_len(pdev, 2)) {
 479                 aper->ranges[aper->count].base = pci_resource_start(pdev, 2);
 480                 aper->ranges[aper->count].size = pci_resource_len(pdev, 2);
 481                 aper->count++;
 482         }
 483
 484         if (pci_resource_len(pdev, 3)) {
 485                 aper->ranges[aper->count].base = pci_resource_start(pdev, 3);
 486                 aper->ranges[aper->count].size = pci_resource_len(pdev, 3);
 487                 aper->count++;
 488         }
 489
 490 #ifdef CONFIG_X86
 491         boot = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 492 #endif
 493         if (nouveau_modeset != 2)
 494                 drm_fb_helper_remove_conflicting_framebuffers(aper, "nouveaufb", boot);
 495         kfree(aper);
 496
 497         ret = nvkm_device_pci_new(pdev, nouveau_config, nouveau_debug,
 498                                   true, true, ~0ULL, &device);
 499         if (ret)
 500                 return ret;
 501
 502         pci_set_master(pdev);
 503
 504         ret = drm_get_pci_dev(pdev, pent, &driver_pci);
 505         if (ret) {
 506                 nvkm_device_del(&device);
 507                 return ret;
 508         }
 509
 510         return 0;
 511 }
 512
 513 #define PCI_CLASS_MULTIMEDIA_HD_AUDIO 0x0403
 514
 515 static void
 516 nouveau_get_hdmi_dev(struct nouveau_drm *drm)
 517 {
 518         struct pci_dev *pdev = drm->dev->pdev;
 519
 520         if (!pdev) {
 521                 NV_DEBUG(drm, "not a PCI device; no HDMI\n");
 522                 drm->hdmi_device = NULL;
 523                 return;
 524         }
 525
 526         /* subfunction one is a hdmi audio device? */
 527         drm->hdmi_device = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),
 528                                                 (unsigned int)pdev->bus->number,
 529                                                 PCI_DEVFN(PCI_SLOT(pdev->devfn), 1));
 530
 531         if (!drm->hdmi_device) {
 532                 NV_DEBUG(drm, "hdmi device not found %d %d %d\n", pdev->bus->number, PCI_SLOT(pdev->devfn), 1);
 533                 return;
 534         }
 535
 536         if ((drm->hdmi_device->class >> 8) != PCI_CLASS_MULTIMEDIA_HD_AUDIO) {
 537                 NV_DEBUG(drm, "possible hdmi device not audio %d\n", drm->hdmi_device->class);
 538                 pci_dev_put(drm->hdmi_device);
 539                 drm->hdmi_device = NULL;
 540                 return;
 541         }
 542 }
 543
 544 static int
 545 nouveau_drm_load(struct drm_device *dev, unsigned long flags)
 546 {
 547         struct nouveau_drm *drm;
 548         int ret;
 549
 550         if (!(drm = kzalloc(sizeof(*drm), GFP_KERNEL)))
 551                 return -ENOMEM;
 552         dev->dev_private = drm;
 553         drm->dev = dev;
 554
 555         ret = nouveau_cli_init(drm, "DRM-master", &drm->master);
 556         if (ret)
 557                 return ret;
 558
 559         ret = nouveau_cli_init(drm, "DRM", &drm->client);
 560         if (ret)
 561                 return ret;
 562
 563         dev->irq_enabled = true;
 564
 565         nvxx_client(&drm->client.base)->debug =
 566                 nvkm_dbgopt(nouveau_debug, "DRM");
 567
 568         INIT_LIST_HEAD(&drm->clients);
 569         spin_lock_init(&drm->tile.lock);
 570
 571         nouveau_get_hdmi_dev(drm);
 572
 573         /* workaround an odd issue on nvc1 by disabling the device's
 574          * nosnoop capability.  hopefully won't cause issues until a
 575          * better fix is found - assuming there is one...
 576          */
 577         if (drm->client.device.info.chipset == 0xc1)
 578                 nvif_mask(&drm->client.device.object, 0x00088080, 0x00000800, 0x00000000);
 579
 580         nouveau_vga_init(drm);
 581
 582         ret = nouveau_ttm_init(drm);
 583         if (ret)
 584                 goto fail_ttm;
 585
 586         ret = nouveau_bios_init(dev);
 587         if (ret)
 588                 goto fail_bios;
 589
 590         ret = nouveau_display_create(dev);
 591         if (ret)
 592                 goto fail_dispctor;
 593
 594         if (dev->mode_config.num_crtc) {
 595                 ret = nouveau_display_init(dev);
 596                 if (ret)
 597                         goto fail_dispinit;
 598         }
 599
 600         nouveau_debugfs_init(drm);
 601         nouveau_hwmon_init(dev);
 602         nouveau_accel_init(drm);
 603         nouveau_fbcon_init(dev);
 604         nouveau_led_init(dev);
 605
 606         if (nouveau_pmops_runtime()) {
 607                 pm_runtime_use_autosuspend(dev->dev);
 608                 pm_runtime_set_autosuspend_delay(dev->dev, 5000);
 609                 pm_runtime_set_active(dev->dev);
 610                 pm_runtime_allow(dev->dev);
 611                 pm_runtime_mark_last_busy(dev->dev);
 612                 pm_runtime_put(dev->dev);
 613         } else {
 614                 /* enable polling for external displays */
 615                 drm_kms_helper_poll_enable(dev);
 616         }
 617         return 0;
 618
 619 fail_dispinit:
 620         nouveau_display_destroy(dev);
 621 fail_dispctor:
 622         nouveau_bios_takedown(dev);
 623 fail_bios:
 624         nouveau_ttm_fini(drm);
 625 fail_ttm:
 626         nouveau_vga_fini(drm);
 627         nouveau_cli_fini(&drm->client);
 628         nouveau_cli_fini(&drm->master);
 629         kfree(drm);
 630         return ret;
 631 }
 632
 633 static void
 634 nouveau_drm_unload(struct drm_device *dev)
 635 {
 636         struct nouveau_drm *drm = nouveau_drm(dev);
 637
 638         if (nouveau_pmops_runtime()) {
 639                 pm_runtime_get_sync(dev->dev);
 640                 pm_runtime_forbid(dev->dev);
 641         }
 642
 643         nouveau_led_fini(dev);
 644         nouveau_fbcon_fini(dev);
 645         nouveau_accel_fini(drm);
 646         nouveau_hwmon_fini(dev);
 647         nouveau_debugfs_fini(drm);
 648
 649         if (dev->mode_config.num_crtc)
 650                 nouveau_display_fini(dev, false);
 651         nouveau_display_destroy(dev);
 652
 653         nouveau_bios_takedown(dev);
 654
 655         nouveau_ttm_fini(drm);
 656         nouveau_vga_fini(drm);
 657
 658         if (drm->hdmi_device)
 659                 pci_dev_put(drm->hdmi_device);
 660         nouveau_cli_fini(&drm->client);
 661         nouveau_cli_fini(&drm->master);
 662         kfree(drm);
 663 }
 664
 665 void
 666 nouveau_drm_device_remove(struct drm_device *dev)
 667 {
 668         struct nouveau_drm *drm = nouveau_drm(dev);
 669         struct nvkm_client *client;
 670         struct nvkm_device *device;
 671
 672         dev->irq_enabled = false;
 673         client = nvxx_client(&drm->client.base);
 674         device = nvkm_device_find(client->device);
 675         drm_put_dev(dev);
 676
 677         nvkm_device_del(&device);
 678 }
 679
 680 static void
 681 nouveau_drm_remove(struct pci_dev *pdev)
 682 {
 683         struct drm_device *dev = pci_get_drvdata(pdev);
 684
 685         nouveau_drm_device_remove(dev);
 686 }
 687
 688 static int
 689 nouveau_do_suspend(struct drm_device *dev, bool runtime)
 690 {
 691         struct nouveau_drm *drm = nouveau_drm(dev);
 692         int ret;
 693
 694         nouveau_led_suspend(dev);
 695
 696         if (dev->mode_config.num_crtc) {
 697                 NV_DEBUG(drm, "suspending console...\n");
 698                 nouveau_fbcon_set_suspend(dev, 1);
 699                 NV_DEBUG(drm, "suspending display...\n");
 700                 ret = nouveau_display_suspend(dev, runtime);
 701                 if (ret)
 702                         return ret;
 703         }
 704
 705         NV_DEBUG(drm, "evicting buffers...\n");
 706         ttm_bo_evict_mm(&drm->ttm.bdev, TTM_PL_VRAM);
 707
 708         NV_DEBUG(drm, "waiting for kernel channels to go idle...\n");
 709         if (drm->cechan) {
 710                 ret = nouveau_channel_idle(drm->cechan);
 711                 if (ret)
 712                         goto fail_display;
 713         }
 714
 715         if (drm->channel) {
 716                 ret = nouveau_channel_idle(drm->channel);
 717                 if (ret)
 718                         goto fail_display;
 719         }
 720
 721         NV_DEBUG(drm, "suspending fence...\n");
 722         if (drm->fence && nouveau_fence(drm)->suspend) {
 723                 if (!nouveau_fence(drm)->suspend(drm)) {
 724                         ret = -ENOMEM;
 725                         goto fail_display;
 726                 }
 727         }
 728
 729         NV_DEBUG(drm, "suspending object tree...\n");
 730         ret = nvif_client_suspend(&drm->master.base);
 731         if (ret)
 732                 goto fail_client;
 733
 734         return 0;
 735
 736 fail_client:
 737         if (drm->fence && nouveau_fence(drm)->resume)
 738                 nouveau_fence(drm)->resume(drm);
 739
 740 fail_display:
 741         if (dev->mode_config.num_crtc) {
 742                 NV_DEBUG(drm, "resuming display...\n");
 743                 nouveau_display_resume(dev, runtime);
 744         }
 745         return ret;
 746 }
 747
 748 static int
 749 nouveau_do_resume(struct drm_device *dev, bool runtime)
 750 {
 751         struct nouveau_drm *drm = nouveau_drm(dev);
 752
 753         NV_DEBUG(drm, "resuming object tree...\n");
 754         nvif_client_resume(&drm->master.base);
 755
 756         NV_DEBUG(drm, "resuming fence...\n");
 757         if (drm->fence && nouveau_fence(drm)->resume)
 758                 nouveau_fence(drm)->resume(drm);
 759
 760         nouveau_run_vbios_init(dev);
 761
 762         if (dev->mode_config.num_crtc) {
 763                 NV_DEBUG(drm, "resuming display...\n");
 764                 nouveau_display_resume(dev, runtime);
 765                 NV_DEBUG(drm, "resuming console...\n");
 766                 nouveau_fbcon_set_suspend(dev, 0);
 767         }
 768
 769         nouveau_led_resume(dev);
 770
 771         return 0;
 772 }
 773
 774 int
 775 nouveau_pmops_suspend(struct device *dev)
 776 {
 777         struct pci_dev *pdev = to_pci_dev(dev);
 778         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 779         int ret;
 780
 781         if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
 782             drm_dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
 783                 return 0;
 784
 785         ret = nouveau_do_suspend(drm_dev, false);
 786         if (ret)
 787                 return ret;
 788
 789         pci_save_state(pdev);
 790         pci_disable_device(pdev);
 791         pci_set_power_state(pdev, PCI_D3hot);
 792         udelay(200);
 793         return 0;
 794 }
 795
 796 int
 797 nouveau_pmops_resume(struct device *dev)
 798 {
 799         struct pci_dev *pdev = to_pci_dev(dev);
 800         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 801         int ret;
 802
 803         if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
 804             drm_dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
 805                 return 0;
 806
 807         pci_set_power_state(pdev, PCI_D0);
 808         pci_restore_state(pdev);
 809         ret = pci_enable_device(pdev);
 810         if (ret)
 811                 return ret;
 812         pci_set_master(pdev);
 813
 814         ret = nouveau_do_resume(drm_dev, false);
 815
 816         /* Monitors may have been connected / disconnected during suspend */
 817         schedule_work(&nouveau_drm(drm_dev)->hpd_work);
 818
 819         return ret;
 820 }
 821
 822 static int
 823 nouveau_pmops_freeze(struct device *dev)
 824 {
 825         struct pci_dev *pdev = to_pci_dev(dev);
 826         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 827         return nouveau_do_suspend(drm_dev, false);
 828 }
 829
 830 static int
 831 nouveau_pmops_thaw(struct device *dev)
 832 {
 833         struct pci_dev *pdev = to_pci_dev(dev);
 834         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 835         return nouveau_do_resume(drm_dev, false);
 836 }
 837
 838 bool
 839 nouveau_pmops_runtime(void)
 840 {
 841         if (nouveau_runtime_pm == -1)
 842                 return nouveau_is_optimus() || nouveau_is_v1_dsm();
 843         return nouveau_runtime_pm == 1;
 844 }
 845
 846 static int
 847 nouveau_pmops_runtime_suspend(struct device *dev)
 848 {
 849         struct pci_dev *pdev = to_pci_dev(dev);
 850         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 851         int ret;
 852
 853         if (!nouveau_pmops_runtime()) {
 854                 pm_runtime_forbid(dev);
 855                 return -EBUSY;
 856         }
 857
 858         drm_kms_helper_poll_disable(drm_dev);
 859         vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_OFF);
 860         nouveau_switcheroo_optimus_dsm();
 861         ret = nouveau_do_suspend(drm_dev, true);
 862         pci_save_state(pdev);
 863         pci_disable_device(pdev);
 864         pci_ignore_hotplug(pdev);
 865         pci_set_power_state(pdev, PCI_D3cold);
 866         drm_dev->switch_power_state = DRM_SWITCH_POWER_DYNAMIC_OFF;
 867         return ret;
 868 }
 869
 870 static int
 871 nouveau_pmops_runtime_resume(struct device *dev)
 872 {
 873         struct pci_dev *pdev = to_pci_dev(dev);
 874         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 875         struct nvif_device *device = &nouveau_drm(drm_dev)->client.device;
 876         int ret;
 877
 878         if (!nouveau_pmops_runtime()) {
 879                 pm_runtime_forbid(dev);
 880                 return -EBUSY;
 881         }
 882
 883         pci_set_power_state(pdev, PCI_D0);
 884         pci_restore_state(pdev);
 885         ret = pci_enable_device(pdev);
 886         if (ret)
 887                 return ret;
 888         pci_set_master(pdev);
 889
 890         ret = nouveau_do_resume(drm_dev, true);
 891
 892         /* do magic */
 893         nvif_mask(&device->object, 0x088488, (1 << 25), (1 << 25));
 894         vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_ON);
 895         drm_dev->switch_power_state = DRM_SWITCH_POWER_ON;
 896
 897         /* Monitors may have been connected / disconnected during suspend */
 898         schedule_work(&nouveau_drm(drm_dev)->hpd_work);
 899
 900         return ret;
 901 }
 902
 903 static int
 904 nouveau_pmops_runtime_idle(struct device *dev)
 905 {
 906         struct pci_dev *pdev = to_pci_dev(dev);
 907         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 908         struct nouveau_drm *drm = nouveau_drm(drm_dev);
 909         struct drm_crtc *crtc;
 910
 911         if (!nouveau_pmops_runtime()) {
 912                 pm_runtime_forbid(dev);
 913                 return -EBUSY;
 914         }
 915
 916         /* if we have a hdmi audio device - make sure it has a driver loaded */
 917         if (drm->hdmi_device) {
 918                 if (!drm->hdmi_device->driver) {
 919                         DRM_DEBUG_DRIVER("failing to power off - no HDMI audio driver loaded\n");
 920                         pm_runtime_mark_last_busy(dev);
 921                         return -EBUSY;
 922                 }
 923         }
 924
 925         list_for_each_entry(crtc, &drm->dev->mode_config.crtc_list, head) {
 926                 if (crtc->enabled) {
 927                         DRM_DEBUG_DRIVER("failing to power off - crtc active\n");
 928                         return -EBUSY;
 929                 }
 930         }
 931         pm_runtime_mark_last_busy(dev);
 932         pm_runtime_autosuspend(dev);
 933         /* we don't want the main rpm_idle to call suspend - we want to autosuspend */
 934         return 1;
 935 }
 936
 937 static int
 938 nouveau_drm_open(struct drm_device *dev, struct drm_file *fpriv)
 939 {
 940         struct nouveau_drm *drm = nouveau_drm(dev);
 941         struct nouveau_cli *cli;
 942         char name[32], tmpname[TASK_COMM_LEN];
 943         int ret;
 944
 945         /* need to bring up power immediately if opening device */
 946         ret = pm_runtime_get_sync(dev->dev);
 947         if (ret < 0 && ret != -EACCES)
 948                 return ret;
 949
 950         get_task_comm(tmpname, current);
 951         snprintf(name, sizeof(name), "%s[%d]", tmpname, pid_nr(fpriv->pid));
 952
 953         if (!(cli = kzalloc(sizeof(*cli), GFP_KERNEL)))
 954                 return ret;
 955
 956         ret = nouveau_cli_init(drm, name, cli);
 957         if (ret)
 958                 goto done;
 959
 960         cli->base.super = false;
 961
 962         fpriv->driver_priv = cli;
 963
 964         mutex_lock(&drm->client.mutex);
 965         list_add(&cli->head, &drm->clients);
 966         mutex_unlock(&drm->client.mutex);
 967
 968 done:
 969         if (ret && cli) {
 970                 nouveau_cli_fini(cli);
 971                 kfree(cli);
 972         }
 973
 974         pm_runtime_mark_last_busy(dev->dev);
 975         pm_runtime_put_autosuspend(dev->dev);
 976         return ret;
 977 }
 978
 979 static void
 980 nouveau_drm_postclose(struct drm_device *dev, struct drm_file *fpriv)
 981 {
 982         struct nouveau_cli *cli = nouveau_cli(fpriv);
 983         struct nouveau_drm *drm = nouveau_drm(dev);
 984
 985         pm_runtime_get_sync(dev->dev);
 986
 987         mutex_lock(&cli->mutex);
 988         if (cli->abi16)
 989                 nouveau_abi16_fini(cli->abi16);
 990         mutex_unlock(&cli->mutex);
 991
 992         mutex_lock(&drm->client.mutex);
 993         list_del(&cli->head);
 994         mutex_unlock(&drm->client.mutex);
 995
 996         nouveau_cli_fini(cli);
 997         kfree(cli);
 998         pm_runtime_mark_last_busy(dev->dev);
 999         pm_runtime_put_autosuspend(dev->dev);
1000 }
1001
1002 static const struct drm_ioctl_desc
1003 nouveau_ioctls[] = {
1004         DRM_IOCTL_DEF_DRV(NOUVEAU_GETPARAM, nouveau_abi16_ioctl_getparam, DRM_AUTH|DRM_RENDER_ALLOW),
1005         DRM_IOCTL_DEF_DRV(NOUVEAU_SETPARAM, nouveau_abi16_ioctl_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1006         DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_ALLOC, nouveau_abi16_ioctl_channel_alloc, DRM_AUTH|DRM_RENDER_ALLOW),
1007         DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_FREE, nouveau_abi16_ioctl_channel_free, DRM_AUTH|DRM_RENDER_ALLOW),
1008         DRM_IOCTL_DEF_DRV(NOUVEAU_GROBJ_ALLOC, nouveau_abi16_ioctl_grobj_alloc, DRM_AUTH|DRM_RENDER_ALLOW),
1009         DRM_IOCTL_DEF_DRV(NOUVEAU_NOTIFIEROBJ_ALLOC, nouveau_abi16_ioctl_notifierobj_alloc, DRM_AUTH|DRM_RENDER_ALLOW),
1010         DRM_IOCTL_DEF_DRV(NOUVEAU_GPUOBJ_FREE, nouveau_abi16_ioctl_gpuobj_free, DRM_AUTH|DRM_RENDER_ALLOW),
1011         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_NEW, nouveau_gem_ioctl_new, DRM_AUTH|DRM_RENDER_ALLOW),
1012         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_PUSHBUF, nouveau_gem_ioctl_pushbuf, DRM_AUTH|DRM_RENDER_ALLOW),
1013         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_PREP, nouveau_gem_ioctl_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
1014         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_FINI, nouveau_gem_ioctl_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
1015         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_INFO, nouveau_gem_ioctl_info, DRM_AUTH|DRM_RENDER_ALLOW),
1016 };
1017
1018 long
1019 nouveau_drm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1020 {
1021         struct drm_file *filp = file->private_data;
1022         struct drm_device *dev = filp->minor->dev;
1023         long ret;
1024
1025         ret = pm_runtime_get_sync(dev->dev);
1026         if (ret < 0 && ret != -EACCES)
1027                 return ret;
1028
1029         switch (_IOC_NR(cmd) - DRM_COMMAND_BASE) {
1030         case DRM_NOUVEAU_NVIF:
1031                 ret = usif_ioctl(filp, (void __user *)arg, _IOC_SIZE(cmd));
1032                 break;
1033         default:
1034                 ret = drm_ioctl(file, cmd, arg);
1035                 break;
1036         }
1037
1038         pm_runtime_mark_last_busy(dev->dev);
1039         pm_runtime_put_autosuspend(dev->dev);
1040         return ret;
1041 }
1042
1043 static const struct file_operations
1044 nouveau_driver_fops = {
1045         .owner = THIS_MODULE,
1046         .open = drm_open,
1047         .release = drm_release,
1048         .unlocked_ioctl = nouveau_drm_ioctl,
1049         .mmap = nouveau_ttm_mmap,
1050         .poll = drm_poll,
1051         .read = drm_read,
1052 #if defined(CONFIG_COMPAT)
1053         .compat_ioctl = nouveau_compat_ioctl,
1054 #endif
1055         .llseek = noop_llseek,
1056 };
1057
1058 static struct drm_driver
1059 driver_stub = {
1060         .driver_features =
1061                 DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER |
1062                 DRIVER_KMS_LEGACY_CONTEXT,
1063
1064         .load = nouveau_drm_load,
1065         .unload = nouveau_drm_unload,
1066         .open = nouveau_drm_open,
1067         .postclose = nouveau_drm_postclose,
1068         .lastclose = nouveau_vga_lastclose,
1069
1070 #if defined(CONFIG_DEBUG_FS)
1071         .debugfs_init = nouveau_drm_debugfs_init,
1072 #endif
1073
1074         .enable_vblank = nouveau_display_vblank_enable,
1075         .disable_vblank = nouveau_display_vblank_disable,
1076         .get_scanout_position = nouveau_display_scanoutpos,
1077         .get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos,
1078
1079         .ioctls = nouveau_ioctls,
1080         .num_ioctls = ARRAY_SIZE(nouveau_ioctls),
1081         .fops = &nouveau_driver_fops,
1082
1083         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1084         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1085         .gem_prime_export = drm_gem_prime_export,
1086         .gem_prime_import = drm_gem_prime_import,
1087         .gem_prime_pin = nouveau_gem_prime_pin,
1088         .gem_prime_res_obj = nouveau_gem_prime_res_obj,
1089         .gem_prime_unpin = nouveau_gem_prime_unpin,
1090         .gem_prime_get_sg_table = nouveau_gem_prime_get_sg_table,
1091         .gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table,
1092         .gem_prime_vmap = nouveau_gem_prime_vmap,
1093         .gem_prime_vunmap = nouveau_gem_prime_vunmap,
1094
1095         .gem_free_object_unlocked = nouveau_gem_object_del,
1096         .gem_open_object = nouveau_gem_object_open,
1097         .gem_close_object = nouveau_gem_object_close,
1098
1099         .dumb_create = nouveau_display_dumb_create,
1100         .dumb_map_offset = nouveau_display_dumb_map_offset,
1101
1102         .name = DRIVER_NAME,
1103         .desc = DRIVER_DESC,
1104 #ifdef GIT_REVISION
1105         .date = GIT_REVISION,
1106 #else
1107         .date = DRIVER_DATE,
1108 #endif
1109         .major = DRIVER_MAJOR,
1110         .minor = DRIVER_MINOR,
1111         .patchlevel = DRIVER_PATCHLEVEL,
1112 };
1113
1114 static struct pci_device_id
1115 nouveau_drm_pci_table[] = {
1116         {
1117                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
1118                 .class = PCI_BASE_CLASS_DISPLAY << 16,
1119                 .class_mask  = 0xff << 16,
1120         },
1121         {
1122                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA_SGS, PCI_ANY_ID),
1123                 .class = PCI_BASE_CLASS_DISPLAY << 16,
1124                 .class_mask  = 0xff << 16,
1125         },
1126         {}
1127 };
1128
1129 static void nouveau_display_options(void)
1130 {
1131         DRM_DEBUG_DRIVER("Loading Nouveau with parameters:\n");
1132
1133         DRM_DEBUG_DRIVER("... tv_disable   : %d\n", nouveau_tv_disable);
1134         DRM_DEBUG_DRIVER("... ignorelid    : %d\n", nouveau_ignorelid);
1135         DRM_DEBUG_DRIVER("... duallink     : %d\n", nouveau_duallink);
1136         DRM_DEBUG_DRIVER("... nofbaccel    : %d\n", nouveau_nofbaccel);
1137         DRM_DEBUG_DRIVER("... config       : %s\n", nouveau_config);
1138         DRM_DEBUG_DRIVER("... debug        : %s\n", nouveau_debug);
1139         DRM_DEBUG_DRIVER("... noaccel      : %d\n", nouveau_noaccel);
1140         DRM_DEBUG_DRIVER("... modeset      : %d\n", nouveau_modeset);
1141         DRM_DEBUG_DRIVER("... runpm        : %d\n", nouveau_runtime_pm);
1142         DRM_DEBUG_DRIVER("... vram_pushbuf : %d\n", nouveau_vram_pushbuf);
1143         DRM_DEBUG_DRIVER("... hdmimhz      : %d\n", nouveau_hdmimhz);
1144 }
1145
1146 static const struct dev_pm_ops nouveau_pm_ops = {
1147         .suspend = nouveau_pmops_suspend,
1148         .resume = nouveau_pmops_resume,
1149         .freeze = nouveau_pmops_freeze,
1150         .thaw = nouveau_pmops_thaw,
1151         .poweroff = nouveau_pmops_freeze,
1152         .restore = nouveau_pmops_resume,
1153         .runtime_suspend = nouveau_pmops_runtime_suspend,
1154         .runtime_resume = nouveau_pmops_runtime_resume,
1155         .runtime_idle = nouveau_pmops_runtime_idle,
1156 };
1157
1158 static struct pci_driver
1159 nouveau_drm_pci_driver = {
1160         .name = "nouveau",
1161         .id_table = nouveau_drm_pci_table,
1162         .probe = nouveau_drm_probe,
1163         .remove = nouveau_drm_remove,
1164         .driver.pm = &nouveau_pm_ops,
1165 };
1166
1167 struct drm_device *
1168 nouveau_platform_device_create(const struct nvkm_device_tegra_func *func,
1169                                struct platform_device *pdev,
1170                                struct nvkm_device **pdevice)
1171 {
1172         struct drm_device *drm;
1173         int err;
1174
1175         err = nvkm_device_tegra_new(func, pdev, nouveau_config, nouveau_debug,
1176                                     true, true, ~0ULL, pdevice);
1177         if (err)
1178                 goto err_free;
1179
1180         drm = drm_dev_alloc(&driver_platform, &pdev->dev);
1181         if (IS_ERR(drm)) {
1182                 err = PTR_ERR(drm);
1183                 goto err_free;
1184         }
1185
1186         platform_set_drvdata(pdev, drm);
1187
1188         return drm;
1189
1190 err_free:
1191         nvkm_device_del(pdevice);
1192
1193         return ERR_PTR(err);
1194 }
1195
1196 static int __init
1197 nouveau_drm_init(void)
1198 {
1199         driver_pci = driver_stub;
1200         driver_platform = driver_stub;
1201
1202         nouveau_display_options();
1203
1204         if (nouveau_modeset == -1) {
1205                 if (vgacon_text_force())
1206                         nouveau_modeset = 0;
1207         }
1208
1209         if (!nouveau_modeset)
1210                 return 0;
1211
1212 #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
1213         platform_driver_register(&nouveau_platform_driver);
1214 #endif
1215
1216         nouveau_register_dsm_handler();
1217         nouveau_backlight_ctor();
1218
1219 #ifdef CONFIG_PCI
1220         return pci_register_driver(&nouveau_drm_pci_driver);
1221 #else
1222         return 0;
1223 #endif
1224 }
1225
1226 static void __exit
1227 nouveau_drm_exit(void)
1228 {
1229         if (!nouveau_modeset)
1230                 return;
1231
1232 #ifdef CONFIG_PCI
1233         pci_unregister_driver(&nouveau_drm_pci_driver);
1234 #endif
1235         nouveau_backlight_dtor();
1236         nouveau_unregister_dsm_handler();
1237
1238 #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
1239         platform_driver_unregister(&nouveau_platform_driver);
1240 #endif
1241 }
1242
1243 module_init(nouveau_drm_init);
1244 module_exit(nouveau_drm_exit);
1245
1246 MODULE_DEVICE_TABLE(pci, nouveau_drm_pci_table);
1247 MODULE_AUTHOR(DRIVER_AUTHOR);
1248 MODULE_DESCRIPTION(DRIVER_DESC);
1249 MODULE_LICENSE("GPL and additional rights");