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_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");
1249