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         mutex_unlock(&cli->lock);
 156         if (dma_fence_add_callback(fence, &work->cb, nouveau_cli_work_fence))
 157                 nouveau_cli_work_fence(fence, &work->cb);
 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_bus_and_slot((unsigned int)pdev->bus->number,
 528                                                 PCI_DEVFN(PCI_SLOT(pdev->devfn), 1));
 529
 530         if (!drm->hdmi_device) {
 531                 NV_DEBUG(drm, "hdmi device not found %d %d %d\n", pdev->bus->number, PCI_SLOT(pdev->devfn), 1);
 532                 return;
 533         }
 534
 535         if ((drm->hdmi_device->class >> 8) != PCI_CLASS_MULTIMEDIA_HD_AUDIO) {
 536                 NV_DEBUG(drm, "possible hdmi device not audio %d\n", drm->hdmi_device->class);
 537                 pci_dev_put(drm->hdmi_device);
 538                 drm->hdmi_device = NULL;
 539                 return;
 540         }
 541 }
 542
 543 static int
 544 nouveau_drm_load(struct drm_device *dev, unsigned long flags)
 545 {
 546         struct nouveau_drm *drm;
 547         int ret;
 548
 549         if (!(drm = kzalloc(sizeof(*drm), GFP_KERNEL)))
 550                 return -ENOMEM;
 551         dev->dev_private = drm;
 552         drm->dev = dev;
 553
 554         ret = nouveau_cli_init(drm, "DRM-master", &drm->master);
 555         if (ret)
 556                 return ret;
 557
 558         ret = nouveau_cli_init(drm, "DRM", &drm->client);
 559         if (ret)
 560                 return ret;
 561
 562         dev->irq_enabled = true;
 563
 564         nvxx_client(&drm->client.base)->debug =
 565                 nvkm_dbgopt(nouveau_debug, "DRM");
 566
 567         INIT_LIST_HEAD(&drm->clients);
 568         spin_lock_init(&drm->tile.lock);
 569
 570         nouveau_get_hdmi_dev(drm);
 571
 572         /* workaround an odd issue on nvc1 by disabling the device's
 573          * nosnoop capability.  hopefully won't cause issues until a
 574          * better fix is found - assuming there is one...
 575          */
 576         if (drm->client.device.info.chipset == 0xc1)
 577                 nvif_mask(&drm->client.device.object, 0x00088080, 0x00000800, 0x00000000);
 578
 579         nouveau_vga_init(drm);
 580
 581         ret = nouveau_ttm_init(drm);
 582         if (ret)
 583                 goto fail_ttm;
 584
 585         ret = nouveau_bios_init(dev);
 586         if (ret)
 587                 goto fail_bios;
 588
 589         ret = nouveau_display_create(dev);
 590         if (ret)
 591                 goto fail_dispctor;
 592
 593         if (dev->mode_config.num_crtc) {
 594                 ret = nouveau_display_init(dev);
 595                 if (ret)
 596                         goto fail_dispinit;
 597         }
 598
 599         nouveau_debugfs_init(drm);
 600         nouveau_hwmon_init(dev);
 601         nouveau_accel_init(drm);
 602         nouveau_fbcon_init(dev);
 603         nouveau_led_init(dev);
 604
 605         if (nouveau_pmops_runtime()) {
 606                 pm_runtime_use_autosuspend(dev->dev);
 607                 pm_runtime_set_autosuspend_delay(dev->dev, 5000);
 608                 pm_runtime_set_active(dev->dev);
 609                 pm_runtime_allow(dev->dev);
 610                 pm_runtime_mark_last_busy(dev->dev);
 611                 pm_runtime_put(dev->dev);
 612         } else {
 613                 /* enable polling for external displays */
 614                 drm_kms_helper_poll_enable(dev);
 615         }
 616         return 0;
 617
 618 fail_dispinit:
 619         nouveau_display_destroy(dev);
 620 fail_dispctor:
 621         nouveau_bios_takedown(dev);
 622 fail_bios:
 623         nouveau_ttm_fini(drm);
 624 fail_ttm:
 625         nouveau_vga_fini(drm);
 626         nouveau_cli_fini(&drm->client);
 627         nouveau_cli_fini(&drm->master);
 628         kfree(drm);
 629         return ret;
 630 }
 631
 632 static void
 633 nouveau_drm_unload(struct drm_device *dev)
 634 {
 635         struct nouveau_drm *drm = nouveau_drm(dev);
 636
 637         if (nouveau_pmops_runtime()) {
 638                 pm_runtime_get_sync(dev->dev);
 639                 pm_runtime_forbid(dev->dev);
 640         }
 641
 642         nouveau_led_fini(dev);
 643         nouveau_fbcon_fini(dev);
 644         nouveau_accel_fini(drm);
 645         nouveau_hwmon_fini(dev);
 646         nouveau_debugfs_fini(drm);
 647
 648         if (dev->mode_config.num_crtc)
 649                 nouveau_display_fini(dev, false);
 650         nouveau_display_destroy(dev);
 651
 652         nouveau_bios_takedown(dev);
 653
 654         nouveau_ttm_fini(drm);
 655         nouveau_vga_fini(drm);
 656
 657         if (drm->hdmi_device)
 658                 pci_dev_put(drm->hdmi_device);
 659         nouveau_cli_fini(&drm->client);
 660         nouveau_cli_fini(&drm->master);
 661         kfree(drm);
 662 }
 663
 664 void
 665 nouveau_drm_device_remove(struct drm_device *dev)
 666 {
 667         struct nouveau_drm *drm = nouveau_drm(dev);
 668         struct nvkm_client *client;
 669         struct nvkm_device *device;
 670
 671         dev->irq_enabled = false;
 672         client = nvxx_client(&drm->client.base);
 673         device = nvkm_device_find(client->device);
 674         drm_put_dev(dev);
 675
 676         nvkm_device_del(&device);
 677 }
 678
 679 static void
 680 nouveau_drm_remove(struct pci_dev *pdev)
 681 {
 682         struct drm_device *dev = pci_get_drvdata(pdev);
 683
 684         nouveau_drm_device_remove(dev);
 685 }
 686
 687 static int
 688 nouveau_do_suspend(struct drm_device *dev, bool runtime)
 689 {
 690         struct nouveau_drm *drm = nouveau_drm(dev);
 691         int ret;
 692
 693         nouveau_led_suspend(dev);
 694
 695         if (dev->mode_config.num_crtc) {
 696                 NV_DEBUG(drm, "suspending console...\n");
 697                 nouveau_fbcon_set_suspend(dev, 1);
 698                 NV_DEBUG(drm, "suspending display...\n");
 699                 ret = nouveau_display_suspend(dev, runtime);
 700                 if (ret)
 701                         return ret;
 702         }
 703
 704         NV_DEBUG(drm, "evicting buffers...\n");
 705         ttm_bo_evict_mm(&drm->ttm.bdev, TTM_PL_VRAM);
 706
 707         NV_DEBUG(drm, "waiting for kernel channels to go idle...\n");
 708         if (drm->cechan) {
 709                 ret = nouveau_channel_idle(drm->cechan);
 710                 if (ret)
 711                         goto fail_display;
 712         }
 713
 714         if (drm->channel) {
 715                 ret = nouveau_channel_idle(drm->channel);
 716                 if (ret)
 717                         goto fail_display;
 718         }
 719
 720         NV_DEBUG(drm, "suspending fence...\n");
 721         if (drm->fence && nouveau_fence(drm)->suspend) {
 722                 if (!nouveau_fence(drm)->suspend(drm)) {
 723                         ret = -ENOMEM;
 724                         goto fail_display;
 725                 }
 726         }
 727
 728         NV_DEBUG(drm, "suspending object tree...\n");
 729         ret = nvif_client_suspend(&drm->master.base);
 730         if (ret)
 731                 goto fail_client;
 732
 733         return 0;
 734
 735 fail_client:
 736         if (drm->fence && nouveau_fence(drm)->resume)
 737                 nouveau_fence(drm)->resume(drm);
 738
 739 fail_display:
 740         if (dev->mode_config.num_crtc) {
 741                 NV_DEBUG(drm, "resuming display...\n");
 742                 nouveau_display_resume(dev, runtime);
 743         }
 744         return ret;
 745 }
 746
 747 static int
 748 nouveau_do_resume(struct drm_device *dev, bool runtime)
 749 {
 750         struct nouveau_drm *drm = nouveau_drm(dev);
 751
 752         NV_DEBUG(drm, "resuming object tree...\n");
 753         nvif_client_resume(&drm->master.base);
 754
 755         NV_DEBUG(drm, "resuming fence...\n");
 756         if (drm->fence && nouveau_fence(drm)->resume)
 757                 nouveau_fence(drm)->resume(drm);
 758
 759         nouveau_run_vbios_init(dev);
 760
 761         if (dev->mode_config.num_crtc) {
 762                 NV_DEBUG(drm, "resuming display...\n");
 763                 nouveau_display_resume(dev, runtime);
 764                 NV_DEBUG(drm, "resuming console...\n");
 765                 nouveau_fbcon_set_suspend(dev, 0);
 766         }
 767
 768         nouveau_led_resume(dev);
 769
 770         return 0;
 771 }
 772
 773 int
 774 nouveau_pmops_suspend(struct device *dev)
 775 {
 776         struct pci_dev *pdev = to_pci_dev(dev);
 777         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 778         int ret;
 779
 780         if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
 781             drm_dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
 782                 return 0;
 783
 784         ret = nouveau_do_suspend(drm_dev, false);
 785         if (ret)
 786                 return ret;
 787
 788         pci_save_state(pdev);
 789         pci_disable_device(pdev);
 790         pci_set_power_state(pdev, PCI_D3hot);
 791         udelay(200);
 792         return 0;
 793 }
 794
 795 int
 796 nouveau_pmops_resume(struct device *dev)
 797 {
 798         struct pci_dev *pdev = to_pci_dev(dev);
 799         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 800         int ret;
 801
 802         if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
 803             drm_dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
 804                 return 0;
 805
 806         pci_set_power_state(pdev, PCI_D0);
 807         pci_restore_state(pdev);
 808         ret = pci_enable_device(pdev);
 809         if (ret)
 810                 return ret;
 811         pci_set_master(pdev);
 812
 813         ret = nouveau_do_resume(drm_dev, false);
 814
 815         /* Monitors may have been connected / disconnected during suspend */
 816         schedule_work(&nouveau_drm(drm_dev)->hpd_work);
 817
 818         return ret;
 819 }
 820
 821 static int
 822 nouveau_pmops_freeze(struct device *dev)
 823 {
 824         struct pci_dev *pdev = to_pci_dev(dev);
 825         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 826         return nouveau_do_suspend(drm_dev, false);
 827 }
 828
 829 static int
 830 nouveau_pmops_thaw(struct device *dev)
 831 {
 832         struct pci_dev *pdev = to_pci_dev(dev);
 833         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 834         return nouveau_do_resume(drm_dev, false);
 835 }
 836
 837 bool
 838 nouveau_pmops_runtime(void)
 839 {
 840         if (nouveau_runtime_pm == -1)
 841                 return nouveau_is_optimus() || nouveau_is_v1_dsm();
 842         return nouveau_runtime_pm == 1;
 843 }
 844
 845 static int
 846 nouveau_pmops_runtime_suspend(struct device *dev)
 847 {
 848         struct pci_dev *pdev = to_pci_dev(dev);
 849         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 850         int ret;
 851
 852         if (!nouveau_pmops_runtime()) {
 853                 pm_runtime_forbid(dev);
 854                 return -EBUSY;
 855         }
 856
 857         drm_kms_helper_poll_disable(drm_dev);
 858         vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_OFF);
 859         nouveau_switcheroo_optimus_dsm();
 860         ret = nouveau_do_suspend(drm_dev, true);
 861         pci_save_state(pdev);
 862         pci_disable_device(pdev);
 863         pci_ignore_hotplug(pdev);
 864         pci_set_power_state(pdev, PCI_D3cold);
 865         drm_dev->switch_power_state = DRM_SWITCH_POWER_DYNAMIC_OFF;
 866         return ret;
 867 }
 868
 869 static int
 870 nouveau_pmops_runtime_resume(struct device *dev)
 871 {
 872         struct pci_dev *pdev = to_pci_dev(dev);
 873         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 874         struct nvif_device *device = &nouveau_drm(drm_dev)->client.device;
 875         int ret;
 876
 877         if (!nouveau_pmops_runtime()) {
 878                 pm_runtime_forbid(dev);
 879                 return -EBUSY;
 880         }
 881
 882         pci_set_power_state(pdev, PCI_D0);
 883         pci_restore_state(pdev);
 884         ret = pci_enable_device(pdev);
 885         if (ret)
 886                 return ret;
 887         pci_set_master(pdev);
 888
 889         ret = nouveau_do_resume(drm_dev, true);
 890
 891         /* do magic */
 892         nvif_mask(&device->object, 0x088488, (1 << 25), (1 << 25));
 893         vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_ON);
 894         drm_dev->switch_power_state = DRM_SWITCH_POWER_ON;
 895
 896         /* Monitors may have been connected / disconnected during suspend */
 897         schedule_work(&nouveau_drm(drm_dev)->hpd_work);
 898
 899         return ret;
 900 }
 901
 902 static int
 903 nouveau_pmops_runtime_idle(struct device *dev)
 904 {
 905         struct pci_dev *pdev = to_pci_dev(dev);
 906         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 907         struct nouveau_drm *drm = nouveau_drm(drm_dev);
 908         struct drm_crtc *crtc;
 909
 910         if (!nouveau_pmops_runtime()) {
 911                 pm_runtime_forbid(dev);
 912                 return -EBUSY;
 913         }
 914
 915         /* if we have a hdmi audio device - make sure it has a driver loaded */
 916         if (drm->hdmi_device) {
 917                 if (!drm->hdmi_device->driver) {
 918                         DRM_DEBUG_DRIVER("failing to power off - no HDMI audio driver loaded\n");
 919                         pm_runtime_mark_last_busy(dev);
 920                         return -EBUSY;
 921                 }
 922         }
 923
 924         list_for_each_entry(crtc, &drm->dev->mode_config.crtc_list, head) {
 925                 if (crtc->enabled) {
 926                         DRM_DEBUG_DRIVER("failing to power off - crtc active\n");
 927                         return -EBUSY;
 928                 }
 929         }
 930         pm_runtime_mark_last_busy(dev);
 931         pm_runtime_autosuspend(dev);
 932         /* we don't want the main rpm_idle to call suspend - we want to autosuspend */
 933         return 1;
 934 }
 935
 936 static int
 937 nouveau_drm_open(struct drm_device *dev, struct drm_file *fpriv)
 938 {
 939         struct nouveau_drm *drm = nouveau_drm(dev);
 940         struct nouveau_cli *cli;
 941         char name[32], tmpname[TASK_COMM_LEN];
 942         int ret;
 943
 944         /* need to bring up power immediately if opening device */
 945         ret = pm_runtime_get_sync(dev->dev);
 946         if (ret < 0 && ret != -EACCES)
 947                 return ret;
 948
 949         get_task_comm(tmpname, current);
 950         snprintf(name, sizeof(name), "%s[%d]", tmpname, pid_nr(fpriv->pid));
 951
 952         if (!(cli = kzalloc(sizeof(*cli), GFP_KERNEL)))
 953                 return ret;
 954
 955         ret = nouveau_cli_init(drm, name, cli);
 956         if (ret)
 957                 goto done;
 958
 959         cli->base.super = false;
 960
 961         fpriv->driver_priv = cli;
 962
 963         mutex_lock(&drm->client.mutex);
 964         list_add(&cli->head, &drm->clients);
 965         mutex_unlock(&drm->client.mutex);
 966
 967 done:
 968         if (ret && cli) {
 969                 nouveau_cli_fini(cli);
 970                 kfree(cli);
 971         }
 972
 973         pm_runtime_mark_last_busy(dev->dev);
 974         pm_runtime_put_autosuspend(dev->dev);
 975         return ret;
 976 }
 977
 978 static void
 979 nouveau_drm_postclose(struct drm_device *dev, struct drm_file *fpriv)
 980 {
 981         struct nouveau_cli *cli = nouveau_cli(fpriv);
 982         struct nouveau_drm *drm = nouveau_drm(dev);
 983
 984         pm_runtime_get_sync(dev->dev);
 985
 986         mutex_lock(&cli->mutex);
 987         if (cli->abi16)
 988                 nouveau_abi16_fini(cli->abi16);
 989         mutex_unlock(&cli->mutex);
 990
 991         mutex_lock(&drm->client.mutex);
 992         list_del(&cli->head);
 993         mutex_unlock(&drm->client.mutex);
 994
 995         nouveau_cli_fini(cli);
 996         kfree(cli);
 997         pm_runtime_mark_last_busy(dev->dev);
 998         pm_runtime_put_autosuspend(dev->dev);
 999 }
1000
1001 static const struct drm_ioctl_desc
1002 nouveau_ioctls[] = {
1003         DRM_IOCTL_DEF_DRV(NOUVEAU_GETPARAM, nouveau_abi16_ioctl_getparam, DRM_AUTH|DRM_RENDER_ALLOW),
1004         DRM_IOCTL_DEF_DRV(NOUVEAU_SETPARAM, nouveau_abi16_ioctl_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1005         DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_ALLOC, nouveau_abi16_ioctl_channel_alloc, DRM_AUTH|DRM_RENDER_ALLOW),
1006         DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_FREE, nouveau_abi16_ioctl_channel_free, DRM_AUTH|DRM_RENDER_ALLOW),
1007         DRM_IOCTL_DEF_DRV(NOUVEAU_GROBJ_ALLOC, nouveau_abi16_ioctl_grobj_alloc, DRM_AUTH|DRM_RENDER_ALLOW),
1008         DRM_IOCTL_DEF_DRV(NOUVEAU_NOTIFIEROBJ_ALLOC, nouveau_abi16_ioctl_notifierobj_alloc, DRM_AUTH|DRM_RENDER_ALLOW),
1009         DRM_IOCTL_DEF_DRV(NOUVEAU_GPUOBJ_FREE, nouveau_abi16_ioctl_gpuobj_free, DRM_AUTH|DRM_RENDER_ALLOW),
1010         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_NEW, nouveau_gem_ioctl_new, DRM_AUTH|DRM_RENDER_ALLOW),
1011         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_PUSHBUF, nouveau_gem_ioctl_pushbuf, DRM_AUTH|DRM_RENDER_ALLOW),
1012         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_PREP, nouveau_gem_ioctl_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
1013         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_FINI, nouveau_gem_ioctl_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
1014         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_INFO, nouveau_gem_ioctl_info, DRM_AUTH|DRM_RENDER_ALLOW),
1015 };
1016
1017 long
1018 nouveau_drm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1019 {
1020         struct drm_file *filp = file->private_data;
1021         struct drm_device *dev = filp->minor->dev;
1022         long ret;
1023
1024         ret = pm_runtime_get_sync(dev->dev);
1025         if (ret < 0 && ret != -EACCES)
1026                 return ret;
1027
1028         switch (_IOC_NR(cmd) - DRM_COMMAND_BASE) {
1029         case DRM_NOUVEAU_NVIF:
1030                 ret = usif_ioctl(filp, (void __user *)arg, _IOC_SIZE(cmd));
1031                 break;
1032         default:
1033                 ret = drm_ioctl(file, cmd, arg);
1034                 break;
1035         }
1036
1037         pm_runtime_mark_last_busy(dev->dev);
1038         pm_runtime_put_autosuspend(dev->dev);
1039         return ret;
1040 }
1041
1042 static const struct file_operations
1043 nouveau_driver_fops = {
1044         .owner = THIS_MODULE,
1045         .open = drm_open,
1046         .release = drm_release,
1047         .unlocked_ioctl = nouveau_drm_ioctl,
1048         .mmap = nouveau_ttm_mmap,
1049         .poll = drm_poll,
1050         .read = drm_read,
1051 #if defined(CONFIG_COMPAT)
1052         .compat_ioctl = nouveau_compat_ioctl,
1053 #endif
1054         .llseek = noop_llseek,
1055 };
1056
1057 static struct drm_driver
1058 driver_stub = {
1059         .driver_features =
1060                 DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER |
1061                 DRIVER_KMS_LEGACY_CONTEXT,
1062
1063         .load = nouveau_drm_load,
1064         .unload = nouveau_drm_unload,
1065         .open = nouveau_drm_open,
1066         .postclose = nouveau_drm_postclose,
1067         .lastclose = nouveau_vga_lastclose,
1068
1069 #if defined(CONFIG_DEBUG_FS)
1070         .debugfs_init = nouveau_drm_debugfs_init,
1071 #endif
1072
1073         .enable_vblank = nouveau_display_vblank_enable,
1074         .disable_vblank = nouveau_display_vblank_disable,
1075         .get_scanout_position = nouveau_display_scanoutpos,
1076         .get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos,
1077
1078         .ioctls = nouveau_ioctls,
1079         .num_ioctls = ARRAY_SIZE(nouveau_ioctls),
1080         .fops = &nouveau_driver_fops,
1081
1082         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1083         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1084         .gem_prime_export = drm_gem_prime_export,
1085         .gem_prime_import = drm_gem_prime_import,
1086         .gem_prime_pin = nouveau_gem_prime_pin,
1087         .gem_prime_res_obj = nouveau_gem_prime_res_obj,
1088         .gem_prime_unpin = nouveau_gem_prime_unpin,
1089         .gem_prime_get_sg_table = nouveau_gem_prime_get_sg_table,
1090         .gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table,
1091         .gem_prime_vmap = nouveau_gem_prime_vmap,
1092         .gem_prime_vunmap = nouveau_gem_prime_vunmap,
1093
1094         .gem_free_object_unlocked = nouveau_gem_object_del,
1095         .gem_open_object = nouveau_gem_object_open,
1096         .gem_close_object = nouveau_gem_object_close,
1097
1098         .dumb_create = nouveau_display_dumb_create,
1099         .dumb_map_offset = nouveau_display_dumb_map_offset,
1100
1101         .name = DRIVER_NAME,
1102         .desc = DRIVER_DESC,
1103 #ifdef GIT_REVISION
1104         .date = GIT_REVISION,
1105 #else
1106         .date = DRIVER_DATE,
1107 #endif
1108         .major = DRIVER_MAJOR,
1109         .minor = DRIVER_MINOR,
1110         .patchlevel = DRIVER_PATCHLEVEL,
1111 };
1112
1113 static struct pci_device_id
1114 nouveau_drm_pci_table[] = {
1115         {
1116                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
1117                 .class = PCI_BASE_CLASS_DISPLAY << 16,
1118                 .class_mask  = 0xff << 16,
1119         },
1120         {
1121                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA_SGS, PCI_ANY_ID),
1122                 .class = PCI_BASE_CLASS_DISPLAY << 16,
1123                 .class_mask  = 0xff << 16,
1124         },
1125         {}
1126 };
1127
1128 static void nouveau_display_options(void)
1129 {
1130         DRM_DEBUG_DRIVER("Loading Nouveau with parameters:\n");
1131
1132         DRM_DEBUG_DRIVER("... tv_disable   : %d\n", nouveau_tv_disable);
1133         DRM_DEBUG_DRIVER("... ignorelid    : %d\n", nouveau_ignorelid);
1134         DRM_DEBUG_DRIVER("... duallink     : %d\n", nouveau_duallink);
1135         DRM_DEBUG_DRIVER("... nofbaccel    : %d\n", nouveau_nofbaccel);
1136         DRM_DEBUG_DRIVER("... config       : %s\n", nouveau_config);
1137         DRM_DEBUG_DRIVER("... debug        : %s\n", nouveau_debug);
1138         DRM_DEBUG_DRIVER("... noaccel      : %d\n", nouveau_noaccel);
1139         DRM_DEBUG_DRIVER("... modeset      : %d\n", nouveau_modeset);
1140         DRM_DEBUG_DRIVER("... runpm        : %d\n", nouveau_runtime_pm);
1141         DRM_DEBUG_DRIVER("... vram_pushbuf : %d\n", nouveau_vram_pushbuf);
1142         DRM_DEBUG_DRIVER("... hdmimhz      : %d\n", nouveau_hdmimhz);
1143 }
1144
1145 static const struct dev_pm_ops nouveau_pm_ops = {
1146         .suspend = nouveau_pmops_suspend,
1147         .resume = nouveau_pmops_resume,
1148         .freeze = nouveau_pmops_freeze,
1149         .thaw = nouveau_pmops_thaw,
1150         .poweroff = nouveau_pmops_freeze,
1151         .restore = nouveau_pmops_resume,
1152         .runtime_suspend = nouveau_pmops_runtime_suspend,
1153         .runtime_resume = nouveau_pmops_runtime_resume,
1154         .runtime_idle = nouveau_pmops_runtime_idle,
1155 };
1156
1157 static struct pci_driver
1158 nouveau_drm_pci_driver = {
1159         .name = "nouveau",
1160         .id_table = nouveau_drm_pci_table,
1161         .probe = nouveau_drm_probe,
1162         .remove = nouveau_drm_remove,
1163         .driver.pm = &nouveau_pm_ops,
1164 };
1165
1166 struct drm_device *
1167 nouveau_platform_device_create(const struct nvkm_device_tegra_func *func,
1168                                struct platform_device *pdev,
1169                                struct nvkm_device **pdevice)
1170 {
1171         struct drm_device *drm;
1172         int err;
1173
1174         err = nvkm_device_tegra_new(func, pdev, nouveau_config, nouveau_debug,
1175                                     true, true, ~0ULL, pdevice);
1176         if (err)
1177                 goto err_free;
1178
1179         drm = drm_dev_alloc(&driver_platform, &pdev->dev);
1180         if (IS_ERR(drm)) {
1181                 err = PTR_ERR(drm);
1182                 goto err_free;
1183         }
1184
1185         platform_set_drvdata(pdev, drm);
1186
1187         return drm;
1188
1189 err_free:
1190         nvkm_device_del(pdevice);
1191
1192         return ERR_PTR(err);
1193 }
1194
1195 static int __init
1196 nouveau_drm_init(void)
1197 {
1198         driver_pci = driver_stub;
1199         driver_platform = driver_stub;
1200
1201         nouveau_display_options();
1202
1203         if (nouveau_modeset == -1) {
1204                 if (vgacon_text_force())
1205                         nouveau_modeset = 0;
1206         }
1207
1208         if (!nouveau_modeset)
1209                 return 0;
1210
1211 #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
1212         platform_driver_register(&nouveau_platform_driver);
1213 #endif
1214
1215         nouveau_register_dsm_handler();
1216         nouveau_backlight_ctor();
1217
1218 #ifdef CONFIG_PCI
1219         return pci_register_driver(&nouveau_drm_pci_driver);
1220 #else
1221         return 0;
1222 #endif
1223 }
1224
1225 static void __exit
1226 nouveau_drm_exit(void)
1227 {
1228         if (!nouveau_modeset)
1229                 return;
1230
1231 #ifdef CONFIG_PCI
1232         pci_unregister_driver(&nouveau_drm_pci_driver);
1233 #endif
1234         nouveau_backlight_dtor();
1235         nouveau_unregister_dsm_handler();
1236
1237 #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
1238         platform_driver_unregister(&nouveau_platform_driver);
1239 #endif
1240 }
1241
1242 module_init(nouveau_drm_init);
1243 module_exit(nouveau_drm_exit);
1244
1245 MODULE_DEVICE_TABLE(pci, nouveau_drm_pci_table);
1246 MODULE_AUTHOR(DRIVER_AUTHOR);
1247 MODULE_DESCRIPTION(DRIVER_DESC);
1248 MODULE_LICENSE("GPL and additional rights");