drivers/gpu/drm/nouveau/nouveau_drv.c

   1 /*
   2  * Copyright 2005 Stephane Marchesin.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include <linux/console.h>
  26 #include <linux/module.h>
  27
  28 #include "drmP.h"
  29 #include "drm.h"
  30 #include "drm_crtc_helper.h"
  31 #include "nouveau_drv.h"
  32 #include "nouveau_abi16.h"
  33 #include "nouveau_hw.h"
  34 #include "nouveau_fb.h"
  35 #include "nouveau_fbcon.h"
  36 #include "nouveau_pm.h"
  37 #include "nouveau_fifo.h"
  38 #include "nv50_display.h"
  39
  40 #include "drm_pciids.h"
  41
  42 MODULE_PARM_DESC(agpmode, "AGP mode (0 to disable AGP)");
  43 int nouveau_agpmode = -1;
  44 module_param_named(agpmode, nouveau_agpmode, int, 0400);
  45
  46 MODULE_PARM_DESC(modeset, "Enable kernel modesetting");
  47 int nouveau_modeset = -1;
  48 module_param_named(modeset, nouveau_modeset, int, 0400);
  49
  50 MODULE_PARM_DESC(vbios, "Override default VBIOS location");
  51 char *nouveau_vbios;
  52 module_param_named(vbios, nouveau_vbios, charp, 0400);
  53
  54 MODULE_PARM_DESC(vram_pushbuf, "Force DMA push buffers to be in VRAM");
  55 int nouveau_vram_pushbuf;
  56 module_param_named(vram_pushbuf, nouveau_vram_pushbuf, int, 0400);
  57
  58 MODULE_PARM_DESC(vram_notify, "Force DMA notifiers to be in VRAM");
  59 int nouveau_vram_notify = 0;
  60 module_param_named(vram_notify, nouveau_vram_notify, int, 0400);
  61
  62 MODULE_PARM_DESC(vram_type, "Override detected VRAM type");
  63 char *nouveau_vram_type;
  64 module_param_named(vram_type, nouveau_vram_type, charp, 0400);
  65
  66 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (>=GeForce 8)");
  67 int nouveau_duallink = 1;
  68 module_param_named(duallink, nouveau_duallink, int, 0400);
  69
  70 MODULE_PARM_DESC(uscript_lvds, "LVDS output script table ID (>=GeForce 8)");
  71 int nouveau_uscript_lvds = -1;
  72 module_param_named(uscript_lvds, nouveau_uscript_lvds, int, 0400);
  73
  74 MODULE_PARM_DESC(uscript_tmds, "TMDS output script table ID (>=GeForce 8)");
  75 int nouveau_uscript_tmds = -1;
  76 module_param_named(uscript_tmds, nouveau_uscript_tmds, int, 0400);
  77
  78 MODULE_PARM_DESC(ignorelid, "Ignore ACPI lid status");
  79 int nouveau_ignorelid = 0;
  80 module_param_named(ignorelid, nouveau_ignorelid, int, 0400);
  81
  82 MODULE_PARM_DESC(noaccel, "Disable all acceleration");
  83 int nouveau_noaccel = -1;
  84 module_param_named(noaccel, nouveau_noaccel, int, 0400);
  85
  86 MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
  87 int nouveau_nofbaccel = 0;
  88 module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
  89
  90 MODULE_PARM_DESC(force_post, "Force POST");
  91 int nouveau_force_post = 0;
  92 module_param_named(force_post, nouveau_force_post, int, 0400);
  93
  94 MODULE_PARM_DESC(override_conntype, "Ignore DCB connector type");
  95 int nouveau_override_conntype = 0;
  96 module_param_named(override_conntype, nouveau_override_conntype, int, 0400);
  97
  98 MODULE_PARM_DESC(tv_disable, "Disable TV-out detection");
  99 int nouveau_tv_disable = 0;
 100 module_param_named(tv_disable, nouveau_tv_disable, int, 0400);
 101
 102 MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
 103                  "\t\tSupported: PAL, PAL-M, PAL-N, PAL-Nc, NTSC-M, NTSC-J,\n"
 104                  "\t\t\thd480i, hd480p, hd576i, hd576p, hd720p, hd1080i.\n"
 105                  "\t\tDefault: PAL\n"
 106                  "\t\t*NOTE* Ignored for cards with external TV encoders.");
 107 char *nouveau_tv_norm;
 108 module_param_named(tv_norm, nouveau_tv_norm, charp, 0400);
 109
 110 MODULE_PARM_DESC(reg_debug, "Register access debug bitmask:\n"
 111                 "\t\t0x1 mc, 0x2 video, 0x4 fb, 0x8 extdev,\n"
 112                 "\t\t0x10 crtc, 0x20 ramdac, 0x40 vgacrtc, 0x80 rmvio,\n"
 113                 "\t\t0x100 vgaattr, 0x200 EVO (G80+)");
 114 int nouveau_reg_debug;
 115 module_param_named(reg_debug, nouveau_reg_debug, int, 0600);
 116
 117 MODULE_PARM_DESC(perflvl, "Performance level (default: boot)");
 118 char *nouveau_perflvl;
 119 module_param_named(perflvl, nouveau_perflvl, charp, 0400);
 120
 121 MODULE_PARM_DESC(perflvl_wr, "Allow perflvl changes (warning: dangerous!)");
 122 int nouveau_perflvl_wr;
 123 module_param_named(perflvl_wr, nouveau_perflvl_wr, int, 0400);
 124
 125 MODULE_PARM_DESC(msi, "Enable MSI (default: off)");
 126 int nouveau_msi;
 127 module_param_named(msi, nouveau_msi, int, 0400);
 128
 129 MODULE_PARM_DESC(ctxfw, "Use external HUB/GPC ucode (fermi)");
 130 int nouveau_ctxfw;
 131 module_param_named(ctxfw, nouveau_ctxfw, int, 0400);
 132
 133 MODULE_PARM_DESC(mxmdcb, "Santise DCB table according to MXM-SIS");
 134 int nouveau_mxmdcb = 1;
 135 module_param_named(mxmdcb, nouveau_mxmdcb, int, 0400);
 136
 137 int nouveau_fbpercrtc;
 138 #if 0
 139 module_param_named(fbpercrtc, nouveau_fbpercrtc, int, 0400);
 140 #endif
 141
 142 static struct pci_device_id pciidlist[] = {
 143         {
 144                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
 145                 .class = PCI_BASE_CLASS_DISPLAY << 16,
 146                 .class_mask  = 0xff << 16,
 147         },
 148         {
 149                 PCI_DEVICE(PCI_VENDOR_ID_NVIDIA_SGS, PCI_ANY_ID),
 150                 .class = PCI_BASE_CLASS_DISPLAY << 16,
 151                 .class_mask  = 0xff << 16,
 152         },
 153         {}
 154 };
 155
 156 MODULE_DEVICE_TABLE(pci, pciidlist);
 157
 158 static struct drm_driver driver;
 159
 160 static int __devinit
 161 nouveau_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 162 {
 163         return drm_get_pci_dev(pdev, ent, &driver);
 164 }
 165
 166 static void
 167 nouveau_pci_remove(struct pci_dev *pdev)
 168 {
 169         struct drm_device *dev = pci_get_drvdata(pdev);
 170
 171         drm_put_dev(dev);
 172 }
 173
 174 int
 175 nouveau_pci_suspend(struct pci_dev *pdev, pm_message_t pm_state)
 176 {
 177         struct drm_device *dev = pci_get_drvdata(pdev);
 178         struct drm_nouveau_private *dev_priv = dev->dev_private;
 179         struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
 180         struct nouveau_fifo_priv *pfifo = nv_engine(dev, NVOBJ_ENGINE_FIFO);
 181         struct nouveau_channel *chan;
 182         struct drm_crtc *crtc;
 183         int ret, i, e;
 184
 185         if (pm_state.event == PM_EVENT_PRETHAW)
 186                 return 0;
 187
 188         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 189                 return 0;
 190
 191         if (dev->mode_config.num_crtc) {
 192                 NV_INFO(dev, "Disabling display...\n");
 193                 nouveau_display_fini(dev);
 194
 195                 NV_INFO(dev, "Disabling fbcon...\n");
 196                 nouveau_fbcon_set_suspend(dev, 1);
 197         }
 198
 199         NV_INFO(dev, "Unpinning framebuffer(s)...\n");
 200         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 201                 struct nouveau_framebuffer *nouveau_fb;
 202
 203                 nouveau_fb = nouveau_framebuffer(crtc->fb);
 204                 if (!nouveau_fb || !nouveau_fb->nvbo)
 205                         continue;
 206
 207                 nouveau_bo_unpin(nouveau_fb->nvbo);
 208         }
 209
 210         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 211                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 212
 213                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 214                 nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 215         }
 216
 217         NV_INFO(dev, "Evicting buffers...\n");
 218         ttm_bo_evict_mm(&dev_priv->ttm.bdev, TTM_PL_VRAM);
 219
 220         NV_INFO(dev, "Idling channels...\n");
 221         for (i = 0; i < (pfifo ? pfifo->channels : 0); i++) {
 222                 chan = dev_priv->channels.ptr[i];
 223
 224                 if (chan && chan->pushbuf_bo)
 225                         nouveau_channel_idle(chan);
 226         }
 227
 228         for (e = NVOBJ_ENGINE_NR - 1; e >= 0; e--) {
 229                 if (!dev_priv->eng[e])
 230                         continue;
 231
 232                 ret = dev_priv->eng[e]->fini(dev, e, true);
 233                 if (ret) {
 234                         NV_ERROR(dev, "... engine %d failed: %d\n", e, ret);
 235                         goto out_abort;
 236                 }
 237         }
 238
 239         ret = pinstmem->suspend(dev);
 240         if (ret) {
 241                 NV_ERROR(dev, "... failed: %d\n", ret);
 242                 goto out_abort;
 243         }
 244
 245         NV_INFO(dev, "Suspending GPU objects...\n");
 246         ret = nouveau_gpuobj_suspend(dev);
 247         if (ret) {
 248                 NV_ERROR(dev, "... failed: %d\n", ret);
 249                 pinstmem->resume(dev);
 250                 goto out_abort;
 251         }
 252
 253         NV_INFO(dev, "And we're gone!\n");
 254         pci_save_state(pdev);
 255         if (pm_state.event == PM_EVENT_SUSPEND) {
 256                 pci_disable_device(pdev);
 257                 pci_set_power_state(pdev, PCI_D3hot);
 258         }
 259
 260         return 0;
 261
 262 out_abort:
 263         NV_INFO(dev, "Re-enabling acceleration..\n");
 264         for (e = e + 1; e < NVOBJ_ENGINE_NR; e++) {
 265                 if (dev_priv->eng[e])
 266                         dev_priv->eng[e]->init(dev, e);
 267         }
 268         return ret;
 269 }
 270
 271 int
 272 nouveau_pci_resume(struct pci_dev *pdev)
 273 {
 274         struct drm_device *dev = pci_get_drvdata(pdev);
 275         struct nouveau_fifo_priv *pfifo = nv_engine(dev, NVOBJ_ENGINE_FIFO);
 276         struct drm_nouveau_private *dev_priv = dev->dev_private;
 277         struct nouveau_engine *engine = &dev_priv->engine;
 278         struct drm_crtc *crtc;
 279         int ret, i;
 280
 281         if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 282                 return 0;
 283
 284         NV_INFO(dev, "We're back, enabling device...\n");
 285         pci_set_power_state(pdev, PCI_D0);
 286         pci_restore_state(pdev);
 287         if (pci_enable_device(pdev))
 288                 return -1;
 289         pci_set_master(dev->pdev);
 290
 291         /* Make sure the AGP controller is in a consistent state */
 292         if (dev_priv->gart_info.type == NOUVEAU_GART_AGP)
 293                 nouveau_mem_reset_agp(dev);
 294
 295         /* Make the CRTCs accessible */
 296         engine->display.early_init(dev);
 297
 298         NV_INFO(dev, "POSTing device...\n");
 299         ret = nouveau_run_vbios_init(dev);
 300         if (ret)
 301                 return ret;
 302
 303         if (dev_priv->gart_info.type == NOUVEAU_GART_AGP) {
 304                 ret = nouveau_mem_init_agp(dev);
 305                 if (ret) {
 306                         NV_ERROR(dev, "error reinitialising AGP: %d\n", ret);
 307                         return ret;
 308                 }
 309         }
 310
 311         NV_INFO(dev, "Restoring GPU objects...\n");
 312         nouveau_gpuobj_resume(dev);
 313
 314         NV_INFO(dev, "Reinitialising engines...\n");
 315         engine->instmem.resume(dev);
 316         engine->mc.init(dev);
 317         engine->timer.init(dev);
 318         engine->fb.init(dev);
 319         for (i = 0; i < NVOBJ_ENGINE_NR; i++) {
 320                 if (dev_priv->eng[i])
 321                         dev_priv->eng[i]->init(dev, i);
 322         }
 323
 324         nouveau_irq_postinstall(dev);
 325
 326         /* Re-write SKIPS, they'll have been lost over the suspend */
 327         if (nouveau_vram_pushbuf) {
 328                 struct nouveau_channel *chan;
 329                 int j;
 330
 331                 for (i = 0; i < (pfifo ? pfifo->channels : 0); i++) {
 332                         chan = dev_priv->channels.ptr[i];
 333                         if (!chan || !chan->pushbuf_bo)
 334                                 continue;
 335
 336                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 337                                 nouveau_bo_wr32(chan->pushbuf_bo, i, 0);
 338                 }
 339         }
 340
 341         nouveau_pm_resume(dev);
 342
 343         NV_INFO(dev, "Restoring mode...\n");
 344         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 345                 struct nouveau_framebuffer *nouveau_fb;
 346
 347                 nouveau_fb = nouveau_framebuffer(crtc->fb);
 348                 if (!nouveau_fb || !nouveau_fb->nvbo)
 349                         continue;
 350
 351                 nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
 352         }
 353
 354         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 355                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 356
 357                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
 358                 if (!ret)
 359                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 360                 if (ret)
 361                         NV_ERROR(dev, "Could not pin/map cursor.\n");
 362         }
 363
 364         if (dev->mode_config.num_crtc) {
 365                 nouveau_fbcon_set_suspend(dev, 0);
 366                 nouveau_fbcon_zfill_all(dev);
 367
 368                 nouveau_display_init(dev);
 369         }
 370
 371         /* Force CLUT to get re-loaded during modeset */
 372         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 373                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 374
 375                 nv_crtc->lut.depth = 0;
 376         }
 377
 378         drm_helper_resume_force_mode(dev);
 379
 380         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 381                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 382                 u32 offset = nv_crtc->cursor.nvbo->bo.offset;
 383
 384                 nv_crtc->cursor.set_offset(nv_crtc, offset);
 385                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 386                                                  nv_crtc->cursor_saved_y);
 387         }
 388
 389         return 0;
 390 }
 391
 392 static struct drm_ioctl_desc nouveau_ioctls[] = {
 393         DRM_IOCTL_DEF_DRV(NOUVEAU_GETPARAM, nouveau_abi16_ioctl_getparam, DRM_UNLOCKED|DRM_AUTH),
 394         DRM_IOCTL_DEF_DRV(NOUVEAU_SETPARAM, nouveau_abi16_ioctl_setparam, DRM_UNLOCKED|DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 395         DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_ALLOC, nouveau_abi16_ioctl_channel_alloc, DRM_UNLOCKED|DRM_AUTH),
 396         DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_FREE, nouveau_abi16_ioctl_channel_free, DRM_UNLOCKED|DRM_AUTH),
 397         DRM_IOCTL_DEF_DRV(NOUVEAU_GROBJ_ALLOC, nouveau_abi16_ioctl_grobj_alloc, DRM_UNLOCKED|DRM_AUTH),
 398         DRM_IOCTL_DEF_DRV(NOUVEAU_NOTIFIEROBJ_ALLOC, nouveau_abi16_ioctl_notifierobj_alloc, DRM_UNLOCKED|DRM_AUTH),
 399         DRM_IOCTL_DEF_DRV(NOUVEAU_GPUOBJ_FREE, nouveau_abi16_ioctl_gpuobj_free, DRM_UNLOCKED|DRM_AUTH),
 400         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_NEW, nouveau_gem_ioctl_new, DRM_UNLOCKED|DRM_AUTH),
 401         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_PUSHBUF, nouveau_gem_ioctl_pushbuf, DRM_UNLOCKED|DRM_AUTH),
 402         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_PREP, nouveau_gem_ioctl_cpu_prep, DRM_UNLOCKED|DRM_AUTH),
 403         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_FINI, nouveau_gem_ioctl_cpu_fini, DRM_UNLOCKED|DRM_AUTH),
 404         DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_INFO, nouveau_gem_ioctl_info, DRM_UNLOCKED|DRM_AUTH),
 405 };
 406
 407 static const struct file_operations nouveau_driver_fops = {
 408         .owner = THIS_MODULE,
 409         .open = drm_open,
 410         .release = drm_release,
 411         .unlocked_ioctl = drm_ioctl,
 412         .mmap = nouveau_ttm_mmap,
 413         .poll = drm_poll,
 414         .fasync = drm_fasync,
 415         .read = drm_read,
 416 #if defined(CONFIG_COMPAT)
 417         .compat_ioctl = nouveau_compat_ioctl,
 418 #endif
 419         .llseek = noop_llseek,
 420 };
 421
 422 static struct drm_driver driver = {
 423         .driver_features =
 424                 DRIVER_USE_AGP | DRIVER_PCI_DMA | DRIVER_SG |
 425                 DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM |
 426                 DRIVER_MODESET | DRIVER_PRIME,
 427         .load = nouveau_load,
 428         .firstopen = nouveau_firstopen,
 429         .lastclose = nouveau_lastclose,
 430         .unload = nouveau_unload,
 431         .open = nouveau_open,
 432         .preclose = nouveau_preclose,
 433         .postclose = nouveau_postclose,
 434 #if defined(CONFIG_DRM_NOUVEAU_DEBUG)
 435         .debugfs_init = nouveau_debugfs_init,
 436         .debugfs_cleanup = nouveau_debugfs_takedown,
 437 #endif
 438         .irq_preinstall = nouveau_irq_preinstall,
 439         .irq_postinstall = nouveau_irq_postinstall,
 440         .irq_uninstall = nouveau_irq_uninstall,
 441         .irq_handler = nouveau_irq_handler,
 442         .get_vblank_counter = drm_vblank_count,
 443         .enable_vblank = nouveau_vblank_enable,
 444         .disable_vblank = nouveau_vblank_disable,
 445         .ioctls = nouveau_ioctls,
 446         .fops = &nouveau_driver_fops,
 447
 448         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 449         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 450         .gem_prime_export = nouveau_gem_prime_export,
 451         .gem_prime_import = nouveau_gem_prime_import,
 452
 453         .gem_init_object = nouveau_gem_object_new,
 454         .gem_free_object = nouveau_gem_object_del,
 455         .gem_open_object = nouveau_gem_object_open,
 456         .gem_close_object = nouveau_gem_object_close,
 457
 458         .dumb_create = nouveau_display_dumb_create,
 459         .dumb_map_offset = nouveau_display_dumb_map_offset,
 460         .dumb_destroy = nouveau_display_dumb_destroy,
 461
 462         .name = DRIVER_NAME,
 463         .desc = DRIVER_DESC,
 464 #ifdef GIT_REVISION
 465         .date = GIT_REVISION,
 466 #else
 467         .date = DRIVER_DATE,
 468 #endif
 469         .major = DRIVER_MAJOR,
 470         .minor = DRIVER_MINOR,
 471         .patchlevel = DRIVER_PATCHLEVEL,
 472 };
 473
 474 static struct pci_driver nouveau_pci_driver = {
 475                 .name = DRIVER_NAME,
 476                 .id_table = pciidlist,
 477                 .probe = nouveau_pci_probe,
 478                 .remove = nouveau_pci_remove,
 479                 .suspend = nouveau_pci_suspend,
 480                 .resume = nouveau_pci_resume
 481 };
 482
 483 static int __init nouveau_init(void)
 484 {
 485         driver.num_ioctls = ARRAY_SIZE(nouveau_ioctls);
 486
 487         if (nouveau_modeset == -1) {
 488 #ifdef CONFIG_VGA_CONSOLE
 489                 if (vgacon_text_force())
 490                         nouveau_modeset = 0;
 491 #endif
 492         }
 493
 494         if (!nouveau_modeset)
 495                 return 0;
 496
 497         nouveau_register_dsm_handler();
 498         return drm_pci_init(&driver, &nouveau_pci_driver);
 499 }
 500
 501 static void __exit nouveau_exit(void)
 502 {
 503         if (!nouveau_modeset)
 504                 return;
 505
 506         drm_pci_exit(&driver, &nouveau_pci_driver);
 507         nouveau_unregister_dsm_handler();
 508 }
 509
 510 module_init(nouveau_init);
 511 module_exit(nouveau_exit);
 512
 513 MODULE_AUTHOR(DRIVER_AUTHOR);
 514 MODULE_DESCRIPTION(DRIVER_DESC);
 515 MODULE_LICENSE("GPL and additional rights");