Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 1136 insertions, 0 deletions

diff --git a/kernel/drivers/gpu/drm/nouveau/nouveau_drm.c b/kernel/drivers/gpu/drm/nouveau/nouveau_drm.c
new file mode 100644
index 000000000..89049335b
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -0,0 +1,1136 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+
+#include <linux/console.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/pm_runtime.h>
+#include <linux/vga_switcheroo.h>
+
+#include "drmP.h"
+#include "drm_crtc_helper.h"
+
+#include <core/device.h>
+#include <core/gpuobj.h>
+#include <core/option.h>
+
+#include "nouveau_drm.h"
+#include "nouveau_dma.h"
+#include "nouveau_ttm.h"
+#include "nouveau_gem.h"
+#include "nouveau_agp.h"
+#include "nouveau_vga.h"
+#include "nouveau_sysfs.h"
+#include "nouveau_hwmon.h"
+#include "nouveau_acpi.h"
+#include "nouveau_bios.h"
+#include "nouveau_ioctl.h"
+#include "nouveau_abi16.h"
+#include "nouveau_fbcon.h"
+#include "nouveau_fence.h"
+#include "nouveau_debugfs.h"
+#include "nouveau_usif.h"
+#include "nouveau_connector.h"
+#include "nouveau_platform.h"
+
+MODULE_PARM_DESC(config, "option string to pass to driver core");
+static char *nouveau_config;
+module_param_named(config, nouveau_config, charp, 0400);
+
+MODULE_PARM_DESC(debug, "debug string to pass to driver core");
+static char *nouveau_debug;
+module_param_named(debug, nouveau_debug, charp, 0400);
+
+MODULE_PARM_DESC(noaccel, "disable kernel/abi16 acceleration");
+static int nouveau_noaccel = 0;
+module_param_named(noaccel, nouveau_noaccel, int, 0400);
+
+MODULE_PARM_DESC(modeset, "enable driver (default: auto, "
+		          "0 = disabled, 1 = enabled, 2 = headless)");
+int nouveau_modeset = -1;
+module_param_named(modeset, nouveau_modeset, int, 0400);
+
+MODULE_PARM_DESC(runpm, "disable (0), force enable (1), optimus only default (-1)");
+int nouveau_runtime_pm = -1;
+module_param_named(runpm, nouveau_runtime_pm, int, 0400);
+
+static struct drm_driver driver_stub;
+static struct drm_driver driver_pci;
+static struct drm_driver driver_platform;
+
+static u64
+nouveau_pci_name(struct pci_dev *pdev)
+{
+	u64 name = (u64)pci_domain_nr(pdev->bus) << 32;
+	name |= pdev->bus->number << 16;
+	name |= PCI_SLOT(pdev->devfn) << 8;
+	return name | PCI_FUNC(pdev->devfn);
+}
+
+static u64
+nouveau_platform_name(struct platform_device *platformdev)
+{
+	return platformdev->id;
+}
+
+static u64
+nouveau_name(struct drm_device *dev)
+{
+	if (dev->pdev)
+		return nouveau_pci_name(dev->pdev);
+	else
+		return nouveau_platform_name(dev->platformdev);
+}
+
+static int
+nouveau_cli_create(u64 name, const char *sname,
+		   int size, void **pcli)
+{
+	struct nouveau_cli *cli = *pcli = kzalloc(size, GFP_KERNEL);
+	if (cli) {
+		int ret = nvif_client_init(NULL, NULL, sname, name,
+					   nouveau_config, nouveau_debug,
+					  &cli->base);
+		if (ret == 0) {
+			mutex_init(&cli->mutex);
+			usif_client_init(cli);
+		}
+		return ret;
+	}
+	return -ENOMEM;
+}
+
+static void
+nouveau_cli_destroy(struct nouveau_cli *cli)
+{
+	nvkm_vm_ref(NULL, &nvxx_client(&cli->base)->vm, NULL);
+	nvif_client_fini(&cli->base);
+	usif_client_fini(cli);
+}
+
+static void
+nouveau_accel_fini(struct nouveau_drm *drm)
+{
+	nouveau_channel_del(&drm->channel);
+	nvif_object_fini(&drm->ntfy);
+	nvkm_gpuobj_ref(NULL, &drm->notify);
+	nvif_object_fini(&drm->nvsw);
+	nouveau_channel_del(&drm->cechan);
+	nvif_object_fini(&drm->ttm.copy);
+	if (drm->fence)
+		nouveau_fence(drm)->dtor(drm);
+}
+
+static void
+nouveau_accel_init(struct nouveau_drm *drm)
+{
+	struct nvif_device *device = &drm->device;
+	u32 arg0, arg1;
+	u32 sclass[16];
+	int ret, i;
+
+	if (nouveau_noaccel)
+		return;
+
+	/* initialise synchronisation routines */
+	/*XXX: this is crap, but the fence/channel stuff is a little
+	 *     backwards in some places.  this will be fixed.
+	 */
+	ret = nvif_object_sclass(&device->base, sclass, ARRAY_SIZE(sclass));
+	if (ret < 0)
+		return;
+
+	for (ret = -ENOSYS, i = 0; ret && i < ARRAY_SIZE(sclass); i++) {
+		switch (sclass[i]) {
+		case NV03_CHANNEL_DMA:
+			ret = nv04_fence_create(drm);
+			break;
+		case NV10_CHANNEL_DMA:
+			ret = nv10_fence_create(drm);
+			break;
+		case NV17_CHANNEL_DMA:
+		case NV40_CHANNEL_DMA:
+			ret = nv17_fence_create(drm);
+			break;
+		case NV50_CHANNEL_GPFIFO:
+			ret = nv50_fence_create(drm);
+			break;
+		case G82_CHANNEL_GPFIFO:
+			ret = nv84_fence_create(drm);
+			break;
+		case FERMI_CHANNEL_GPFIFO:
+		case KEPLER_CHANNEL_GPFIFO_A:
+		case MAXWELL_CHANNEL_GPFIFO_A:
+			ret = nvc0_fence_create(drm);
+			break;
+		default:
+			break;
+		}
+	}
+
+	if (ret) {
+		NV_ERROR(drm, "failed to initialise sync subsystem, %d\n", ret);
+		nouveau_accel_fini(drm);
+		return;
+	}
+
+	if (device->info.family >= NV_DEVICE_INFO_V0_KEPLER) {
+		ret = nouveau_channel_new(drm, &drm->device, NVDRM_CHAN + 1,
+					  KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_CE0|
+					  KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_CE1,
+					  0, &drm->cechan);
+		if (ret)
+			NV_ERROR(drm, "failed to create ce channel, %d\n", ret);
+
+		arg0 = KEPLER_CHANNEL_GPFIFO_A_V0_ENGINE_GR;
+		arg1 = 1;
+	} else
+	if (device->info.chipset >= 0xa3 &&
+	    device->info.chipset != 0xaa &&
+	    device->info.chipset != 0xac) {
+		ret = nouveau_channel_new(drm, &drm->device, NVDRM_CHAN + 1,
+					  NvDmaFB, NvDmaTT, &drm->cechan);
+		if (ret)
+			NV_ERROR(drm, "failed to create ce channel, %d\n", ret);
+
+		arg0 = NvDmaFB;
+		arg1 = NvDmaTT;
+	} else {
+		arg0 = NvDmaFB;
+		arg1 = NvDmaTT;
+	}
+
+	ret = nouveau_channel_new(drm, &drm->device, NVDRM_CHAN, arg0, arg1,
+				 &drm->channel);
+	if (ret) {
+		NV_ERROR(drm, "failed to create kernel channel, %d\n", ret);
+		nouveau_accel_fini(drm);
+		return;
+	}
+
+	ret = nvif_object_init(drm->channel->object, NULL, NVDRM_NVSW,
+			       nouveau_abi16_swclass(drm), NULL, 0, &drm->nvsw);
+	if (ret == 0) {
+		struct nvkm_sw_chan *swch;
+		ret = RING_SPACE(drm->channel, 2);
+		if (ret == 0) {
+			if (device->info.family < NV_DEVICE_INFO_V0_FERMI) {
+				BEGIN_NV04(drm->channel, NvSubSw, 0, 1);
+				OUT_RING  (drm->channel, NVDRM_NVSW);
+			} else
+			if (device->info.family < NV_DEVICE_INFO_V0_KEPLER) {
+				BEGIN_NVC0(drm->channel, FermiSw, 0, 1);
+				OUT_RING  (drm->channel, 0x001f0000);
+			}
+		}
+		swch = (void *)nvxx_object(&drm->nvsw)->parent;
+		swch->flip = nouveau_flip_complete;
+		swch->flip_data = drm->channel;
+	}
+
+	if (ret) {
+		NV_ERROR(drm, "failed to allocate software object, %d\n", ret);
+		nouveau_accel_fini(drm);
+		return;
+	}
+
+	if (device->info.family < NV_DEVICE_INFO_V0_FERMI) {
+		ret = nvkm_gpuobj_new(nvxx_object(&drm->device), NULL, 32,
+				      0, 0, &drm->notify);
+		if (ret) {
+			NV_ERROR(drm, "failed to allocate notifier, %d\n", ret);
+			nouveau_accel_fini(drm);
+			return;
+		}
+
+		ret = nvif_object_init(drm->channel->object, NULL, NvNotify0,
+				       NV_DMA_IN_MEMORY,
+				       &(struct nv_dma_v0) {
+						.target = NV_DMA_V0_TARGET_VRAM,
+						.access = NV_DMA_V0_ACCESS_RDWR,
+						.start = drm->notify->addr,
+						.limit = drm->notify->addr + 31
+				       }, sizeof(struct nv_dma_v0),
+				       &drm->ntfy);
+		if (ret) {
+			nouveau_accel_fini(drm);
+			return;
+		}
+	}
+
+
+	nouveau_bo_move_init(drm);
+}
+
+static int nouveau_drm_probe(struct pci_dev *pdev,
+			     const struct pci_device_id *pent)
+{
+	struct nvkm_device *device;
+	struct apertures_struct *aper;
+	bool boot = false;
+	int ret;
+
+	/* remove conflicting drivers (vesafb, efifb etc) */
+	aper = alloc_apertures(3);
+	if (!aper)
+		return -ENOMEM;
+
+	aper->ranges[0].base = pci_resource_start(pdev, 1);
+	aper->ranges[0].size = pci_resource_len(pdev, 1);
+	aper->count = 1;
+
+	if (pci_resource_len(pdev, 2)) {
+		aper->ranges[aper->count].base = pci_resource_start(pdev, 2);
+		aper->ranges[aper->count].size = pci_resource_len(pdev, 2);
+		aper->count++;
+	}
+
+	if (pci_resource_len(pdev, 3)) {
+		aper->ranges[aper->count].base = pci_resource_start(pdev, 3);
+		aper->ranges[aper->count].size = pci_resource_len(pdev, 3);
+		aper->count++;
+	}
+
+#ifdef CONFIG_X86
+	boot = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
+#endif
+	if (nouveau_modeset != 2)
+		remove_conflicting_framebuffers(aper, "nouveaufb", boot);
+	kfree(aper);
+
+	ret = nvkm_device_create(pdev, NVKM_BUS_PCI,
+				 nouveau_pci_name(pdev), pci_name(pdev),
+				 nouveau_config, nouveau_debug, &device);
+	if (ret)
+		return ret;
+
+	pci_set_master(pdev);
+
+	ret = drm_get_pci_dev(pdev, pent, &driver_pci);
+	if (ret) {
+		nvkm_object_ref(NULL, (struct nvkm_object **)&device);
+		return ret;
+	}
+
+	return 0;
+}
+
+#define PCI_CLASS_MULTIMEDIA_HD_AUDIO 0x0403
+
+static void
+nouveau_get_hdmi_dev(struct nouveau_drm *drm)
+{
+	struct pci_dev *pdev = drm->dev->pdev;
+
+	if (!pdev) {
+		DRM_INFO("not a PCI device; no HDMI\n");
+		drm->hdmi_device = NULL;
+		return;
+	}
+
+	/* subfunction one is a hdmi audio device? */
+	drm->hdmi_device = pci_get_bus_and_slot((unsigned int)pdev->bus->number,
+						PCI_DEVFN(PCI_SLOT(pdev->devfn), 1));
+
+	if (!drm->hdmi_device) {
+		NV_DEBUG(drm, "hdmi device not found %d %d %d\n", pdev->bus->number, PCI_SLOT(pdev->devfn), 1);
+		return;
+	}
+
+	if ((drm->hdmi_device->class >> 8) != PCI_CLASS_MULTIMEDIA_HD_AUDIO) {
+		NV_DEBUG(drm, "possible hdmi device not audio %d\n", drm->hdmi_device->class);
+		pci_dev_put(drm->hdmi_device);
+		drm->hdmi_device = NULL;
+		return;
+	}
+}
+
+static int
+nouveau_drm_load(struct drm_device *dev, unsigned long flags)
+{
+	struct pci_dev *pdev = dev->pdev;
+	struct nouveau_drm *drm;
+	int ret;
+
+	ret = nouveau_cli_create(nouveau_name(dev), "DRM", sizeof(*drm),
+				 (void **)&drm);
+	if (ret)
+		return ret;
+
+	dev->dev_private = drm;
+	drm->dev = dev;
+	nvxx_client(&drm->client.base)->debug =
+		nvkm_dbgopt(nouveau_debug, "DRM");
+
+	INIT_LIST_HEAD(&drm->clients);
+	spin_lock_init(&drm->tile.lock);
+
+	nouveau_get_hdmi_dev(drm);
+
+	/* make sure AGP controller is in a consistent state before we
+	 * (possibly) execute vbios init tables (see nouveau_agp.h)
+	 */
+	if (pdev && drm_pci_device_is_agp(dev) && dev->agp) {
+		const u64 enables = NV_DEVICE_V0_DISABLE_IDENTIFY |
+				    NV_DEVICE_V0_DISABLE_MMIO;
+		/* dummy device object, doesn't init anything, but allows
+		 * agp code access to registers
+		 */
+		ret = nvif_device_init(&drm->client.base.base, NULL,
+				       NVDRM_DEVICE, NV_DEVICE,
+				       &(struct nv_device_v0) {
+						.device = ~0,
+						.disable = ~enables,
+						.debug0 = ~0,
+				       }, sizeof(struct nv_device_v0),
+				       &drm->device);
+		if (ret)
+			goto fail_device;
+
+		nouveau_agp_reset(drm);
+		nvif_device_fini(&drm->device);
+	}
+
+	ret = nvif_device_init(&drm->client.base.base, NULL, NVDRM_DEVICE,
+			       NV_DEVICE,
+			       &(struct nv_device_v0) {
+					.device = ~0,
+					.disable = 0,
+					.debug0 = 0,
+			       }, sizeof(struct nv_device_v0),
+			       &drm->device);
+	if (ret)
+		goto fail_device;
+
+	dev->irq_enabled = true;
+
+	/* workaround an odd issue on nvc1 by disabling the device's
+	 * nosnoop capability.  hopefully won't cause issues until a
+	 * better fix is found - assuming there is one...
+	 */
+	if (drm->device.info.chipset == 0xc1)
+		nvif_mask(&drm->device, 0x00088080, 0x00000800, 0x00000000);
+
+	nouveau_vga_init(drm);
+	nouveau_agp_init(drm);
+
+	if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
+		ret = nvkm_vm_new(nvxx_device(&drm->device), 0, (1ULL << 40),
+				  0x1000, &drm->client.vm);
+		if (ret)
+			goto fail_device;
+
+		nvxx_client(&drm->client.base)->vm = drm->client.vm;
+	}
+
+	ret = nouveau_ttm_init(drm);
+	if (ret)
+		goto fail_ttm;
+
+	ret = nouveau_bios_init(dev);
+	if (ret)
+		goto fail_bios;
+
+	ret = nouveau_display_create(dev);
+	if (ret)
+		goto fail_dispctor;
+
+	if (dev->mode_config.num_crtc) {
+		ret = nouveau_display_init(dev);
+		if (ret)
+			goto fail_dispinit;
+	}
+
+	nouveau_sysfs_init(dev);
+	nouveau_hwmon_init(dev);
+	nouveau_accel_init(drm);
+	nouveau_fbcon_init(dev);
+
+	if (nouveau_runtime_pm != 0) {
+		pm_runtime_use_autosuspend(dev->dev);
+		pm_runtime_set_autosuspend_delay(dev->dev, 5000);
+		pm_runtime_set_active(dev->dev);
+		pm_runtime_allow(dev->dev);
+		pm_runtime_mark_last_busy(dev->dev);
+		pm_runtime_put(dev->dev);
+	}
+	return 0;
+
+fail_dispinit:
+	nouveau_display_destroy(dev);
+fail_dispctor:
+	nouveau_bios_takedown(dev);
+fail_bios:
+	nouveau_ttm_fini(drm);
+fail_ttm:
+	nouveau_agp_fini(drm);
+	nouveau_vga_fini(drm);
+fail_device:
+	nvif_device_fini(&drm->device);
+	nouveau_cli_destroy(&drm->client);
+	return ret;
+}
+
+static int
+nouveau_drm_unload(struct drm_device *dev)
+{
+	struct nouveau_drm *drm = nouveau_drm(dev);
+
+	pm_runtime_get_sync(dev->dev);
+	nouveau_fbcon_fini(dev);
+	nouveau_accel_fini(drm);
+	nouveau_hwmon_fini(dev);
+	nouveau_sysfs_fini(dev);
+
+	if (dev->mode_config.num_crtc)
+		nouveau_display_fini(dev);
+	nouveau_display_destroy(dev);
+
+	nouveau_bios_takedown(dev);
+
+	nouveau_ttm_fini(drm);
+	nouveau_agp_fini(drm);
+	nouveau_vga_fini(drm);
+
+	nvif_device_fini(&drm->device);
+	if (drm->hdmi_device)
+		pci_dev_put(drm->hdmi_device);
+	nouveau_cli_destroy(&drm->client);
+	return 0;
+}
+
+void
+nouveau_drm_device_remove(struct drm_device *dev)
+{
+	struct nouveau_drm *drm = nouveau_drm(dev);
+	struct nvkm_client *client;
+	struct nvkm_object *device;
+
+	dev->irq_enabled = false;
+	client = nvxx_client(&drm->client.base);
+	device = client->device;
+	drm_put_dev(dev);
+
+	nvkm_object_ref(NULL, &device);
+	nvkm_object_debug();
+}
+
+static void
+nouveau_drm_remove(struct pci_dev *pdev)
+{
+	struct drm_device *dev = pci_get_drvdata(pdev);
+
+	nouveau_drm_device_remove(dev);
+}
+
+static int
+nouveau_do_suspend(struct drm_device *dev, bool runtime)
+{
+	struct nouveau_drm *drm = nouveau_drm(dev);
+	struct nouveau_cli *cli;
+	int ret;
+
+	if (dev->mode_config.num_crtc) {
+		NV_INFO(drm, "suspending console...\n");
+		nouveau_fbcon_set_suspend(dev, 1);
+		NV_INFO(drm, "suspending display...\n");
+		ret = nouveau_display_suspend(dev, runtime);
+		if (ret)
+			return ret;
+	}
+
+	NV_INFO(drm, "evicting buffers...\n");
+	ttm_bo_evict_mm(&drm->ttm.bdev, TTM_PL_VRAM);
+
+	NV_INFO(drm, "waiting for kernel channels to go idle...\n");
+	if (drm->cechan) {
+		ret = nouveau_channel_idle(drm->cechan);
+		if (ret)
+			goto fail_display;
+	}
+
+	if (drm->channel) {
+		ret = nouveau_channel_idle(drm->channel);
+		if (ret)
+			goto fail_display;
+	}
+
+	NV_INFO(drm, "suspending client object trees...\n");
+	if (drm->fence && nouveau_fence(drm)->suspend) {
+		if (!nouveau_fence(drm)->suspend(drm)) {
+			ret = -ENOMEM;
+			goto fail_display;
+		}
+	}
+
+	list_for_each_entry(cli, &drm->clients, head) {
+		ret = nvif_client_suspend(&cli->base);
+		if (ret)
+			goto fail_client;
+	}
+
+	NV_INFO(drm, "suspending kernel object tree...\n");
+	ret = nvif_client_suspend(&drm->client.base);
+	if (ret)
+		goto fail_client;
+
+	nouveau_agp_fini(drm);
+	return 0;
+
+fail_client:
+	list_for_each_entry_continue_reverse(cli, &drm->clients, head) {
+		nvif_client_resume(&cli->base);
+	}
+
+	if (drm->fence && nouveau_fence(drm)->resume)
+		nouveau_fence(drm)->resume(drm);
+
+fail_display:
+	if (dev->mode_config.num_crtc) {
+		NV_INFO(drm, "resuming display...\n");
+		nouveau_display_resume(dev, runtime);
+	}
+	return ret;
+}
+
+static int
+nouveau_do_resume(struct drm_device *dev, bool runtime)
+{
+	struct nouveau_drm *drm = nouveau_drm(dev);
+	struct nouveau_cli *cli;
+
+	NV_INFO(drm, "re-enabling device...\n");
+
+	nouveau_agp_reset(drm);
+
+	NV_INFO(drm, "resuming kernel object tree...\n");
+	nvif_client_resume(&drm->client.base);
+	nouveau_agp_init(drm);
+
+	NV_INFO(drm, "resuming client object trees...\n");
+	if (drm->fence && nouveau_fence(drm)->resume)
+		nouveau_fence(drm)->resume(drm);
+
+	list_for_each_entry(cli, &drm->clients, head) {
+		nvif_client_resume(&cli->base);
+	}
+
+	nouveau_run_vbios_init(dev);
+
+	if (dev->mode_config.num_crtc) {
+		NV_INFO(drm, "resuming display...\n");
+		nouveau_display_resume(dev, runtime);
+		NV_INFO(drm, "resuming console...\n");
+		nouveau_fbcon_set_suspend(dev, 0);
+	}
+
+	return 0;
+}
+
+int
+nouveau_pmops_suspend(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct drm_device *drm_dev = pci_get_drvdata(pdev);
+	int ret;
+
+	if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
+	    drm_dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
+		return 0;
+
+	ret = nouveau_do_suspend(drm_dev, false);
+	if (ret)
+		return ret;
+
+	pci_save_state(pdev);
+	pci_disable_device(pdev);
+	pci_set_power_state(pdev, PCI_D3hot);
+	return 0;
+}
+
+int
+nouveau_pmops_resume(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct drm_device *drm_dev = pci_get_drvdata(pdev);
+	int ret;
+
+	if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
+	    drm_dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
+		return 0;
+
+	pci_set_power_state(pdev, PCI_D0);
+	pci_restore_state(pdev);
+	ret = pci_enable_device(pdev);
+	if (ret)
+		return ret;
+	pci_set_master(pdev);
+
+	return nouveau_do_resume(drm_dev, false);
+}
+
+static int
+nouveau_pmops_freeze(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct drm_device *drm_dev = pci_get_drvdata(pdev);
+	return nouveau_do_suspend(drm_dev, false);
+}
+
+static int
+nouveau_pmops_thaw(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct drm_device *drm_dev = pci_get_drvdata(pdev);
+	return nouveau_do_resume(drm_dev, false);
+}
+
+static int
+nouveau_pmops_runtime_suspend(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct drm_device *drm_dev = pci_get_drvdata(pdev);
+	int ret;
+
+	if (nouveau_runtime_pm == 0) {
+		pm_runtime_forbid(dev);
+		return -EBUSY;
+	}
+
+	/* are we optimus enabled? */
+	if (nouveau_runtime_pm == -1 && !nouveau_is_optimus() && !nouveau_is_v1_dsm()) {
+		DRM_DEBUG_DRIVER("failing to power off - not optimus\n");
+		pm_runtime_forbid(dev);
+		return -EBUSY;
+	}
+
+	nv_debug_level(SILENT);
+	drm_kms_helper_poll_disable(drm_dev);
+	vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_OFF);
+	nouveau_switcheroo_optimus_dsm();
+	ret = nouveau_do_suspend(drm_dev, true);
+	pci_save_state(pdev);
+	pci_disable_device(pdev);
+	pci_ignore_hotplug(pdev);
+	pci_set_power_state(pdev, PCI_D3cold);
+	drm_dev->switch_power_state = DRM_SWITCH_POWER_DYNAMIC_OFF;
+	return ret;
+}
+
+static int
+nouveau_pmops_runtime_resume(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct drm_device *drm_dev = pci_get_drvdata(pdev);
+	struct nvif_device *device = &nouveau_drm(drm_dev)->device;
+	int ret;
+
+	if (nouveau_runtime_pm == 0)
+		return -EINVAL;
+
+	pci_set_power_state(pdev, PCI_D0);
+	pci_restore_state(pdev);
+	ret = pci_enable_device(pdev);
+	if (ret)
+		return ret;
+	pci_set_master(pdev);
+
+	ret = nouveau_do_resume(drm_dev, true);
+	drm_kms_helper_poll_enable(drm_dev);
+	/* do magic */
+	nvif_mask(device, 0x88488, (1 << 25), (1 << 25));
+	vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_ON);
+	drm_dev->switch_power_state = DRM_SWITCH_POWER_ON;
+	nv_debug_level(NORMAL);
+	return ret;
+}
+
+static int
+nouveau_pmops_runtime_idle(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct drm_device *drm_dev = pci_get_drvdata(pdev);
+	struct nouveau_drm *drm = nouveau_drm(drm_dev);
+	struct drm_crtc *crtc;
+
+	if (nouveau_runtime_pm == 0) {
+		pm_runtime_forbid(dev);
+		return -EBUSY;
+	}
+
+	/* are we optimus enabled? */
+	if (nouveau_runtime_pm == -1 && !nouveau_is_optimus() && !nouveau_is_v1_dsm()) {
+		DRM_DEBUG_DRIVER("failing to power off - not optimus\n");
+		pm_runtime_forbid(dev);
+		return -EBUSY;
+	}
+
+	/* if we have a hdmi audio device - make sure it has a driver loaded */
+	if (drm->hdmi_device) {
+		if (!drm->hdmi_device->driver) {
+			DRM_DEBUG_DRIVER("failing to power off - no HDMI audio driver loaded\n");
+			pm_runtime_mark_last_busy(dev);
+			return -EBUSY;
+		}
+	}
+
+	list_for_each_entry(crtc, &drm->dev->mode_config.crtc_list, head) {
+		if (crtc->enabled) {
+			DRM_DEBUG_DRIVER("failing to power off - crtc active\n");
+			return -EBUSY;
+		}
+	}
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_autosuspend(dev);
+	/* we don't want the main rpm_idle to call suspend - we want to autosuspend */
+	return 1;
+}
+
+static int
+nouveau_drm_open(struct drm_device *dev, struct drm_file *fpriv)
+{
+	struct nouveau_drm *drm = nouveau_drm(dev);
+	struct nouveau_cli *cli;
+	char name[32], tmpname[TASK_COMM_LEN];
+	int ret;
+
+	/* need to bring up power immediately if opening device */
+	ret = pm_runtime_get_sync(dev->dev);
+	if (ret < 0 && ret != -EACCES)
+		return ret;
+
+	get_task_comm(tmpname, current);
+	snprintf(name, sizeof(name), "%s[%d]", tmpname, pid_nr(fpriv->pid));
+
+	ret = nouveau_cli_create(nouveau_name(dev), name, sizeof(*cli),
+			(void **)&cli);
+
+	if (ret)
+		goto out_suspend;
+
+	cli->base.super = false;
+
+	if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
+		ret = nvkm_vm_new(nvxx_device(&drm->device), 0, (1ULL << 40),
+				  0x1000, &cli->vm);
+		if (ret) {
+			nouveau_cli_destroy(cli);
+			goto out_suspend;
+		}
+
+		nvxx_client(&cli->base)->vm = cli->vm;
+	}
+
+	fpriv->driver_priv = cli;
+
+	mutex_lock(&drm->client.mutex);
+	list_add(&cli->head, &drm->clients);
+	mutex_unlock(&drm->client.mutex);
+
+out_suspend:
+	pm_runtime_mark_last_busy(dev->dev);
+	pm_runtime_put_autosuspend(dev->dev);
+
+	return ret;
+}
+
+static void
+nouveau_drm_preclose(struct drm_device *dev, struct drm_file *fpriv)
+{
+	struct nouveau_cli *cli = nouveau_cli(fpriv);
+	struct nouveau_drm *drm = nouveau_drm(dev);
+
+	pm_runtime_get_sync(dev->dev);
+
+	if (cli->abi16)
+		nouveau_abi16_fini(cli->abi16);
+
+	mutex_lock(&drm->client.mutex);
+	list_del(&cli->head);
+	mutex_unlock(&drm->client.mutex);
+
+}
+
+static void
+nouveau_drm_postclose(struct drm_device *dev, struct drm_file *fpriv)
+{
+	struct nouveau_cli *cli = nouveau_cli(fpriv);
+	nouveau_cli_destroy(cli);
+	pm_runtime_mark_last_busy(dev->dev);
+	pm_runtime_put_autosuspend(dev->dev);
+}
+
+static const struct drm_ioctl_desc
+nouveau_ioctls[] = {
+	DRM_IOCTL_DEF_DRV(NOUVEAU_GETPARAM, nouveau_abi16_ioctl_getparam, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_SETPARAM, nouveau_abi16_ioctl_setparam, DRM_UNLOCKED|DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_ALLOC, nouveau_abi16_ioctl_channel_alloc, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_FREE, nouveau_abi16_ioctl_channel_free, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_GROBJ_ALLOC, nouveau_abi16_ioctl_grobj_alloc, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_NOTIFIEROBJ_ALLOC, nouveau_abi16_ioctl_notifierobj_alloc, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_GPUOBJ_FREE, nouveau_abi16_ioctl_gpuobj_free, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_NEW, nouveau_gem_ioctl_new, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_PUSHBUF, nouveau_gem_ioctl_pushbuf, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_PREP, nouveau_gem_ioctl_cpu_prep, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_FINI, nouveau_gem_ioctl_cpu_fini, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_INFO, nouveau_gem_ioctl_info, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+};
+
+long
+nouveau_drm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct drm_file *filp = file->private_data;
+	struct drm_device *dev = filp->minor->dev;
+	long ret;
+
+	ret = pm_runtime_get_sync(dev->dev);
+	if (ret < 0 && ret != -EACCES)
+		return ret;
+
+	switch (_IOC_NR(cmd) - DRM_COMMAND_BASE) {
+	case DRM_NOUVEAU_NVIF:
+		ret = usif_ioctl(filp, (void __user *)arg, _IOC_SIZE(cmd));
+		break;
+	default:
+		ret = drm_ioctl(file, cmd, arg);
+		break;
+	}
+
+	pm_runtime_mark_last_busy(dev->dev);
+	pm_runtime_put_autosuspend(dev->dev);
+	return ret;
+}
+
+static const struct file_operations
+nouveau_driver_fops = {
+	.owner = THIS_MODULE,
+	.open = drm_open,
+	.release = drm_release,
+	.unlocked_ioctl = nouveau_drm_ioctl,
+	.mmap = nouveau_ttm_mmap,
+	.poll = drm_poll,
+	.read = drm_read,
+#if defined(CONFIG_COMPAT)
+	.compat_ioctl = nouveau_compat_ioctl,
+#endif
+	.llseek = noop_llseek,
+};
+
+static struct drm_driver
+driver_stub = {
+	.driver_features =
+		DRIVER_USE_AGP |
+		DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER,
+
+	.load = nouveau_drm_load,
+	.unload = nouveau_drm_unload,
+	.open = nouveau_drm_open,
+	.preclose = nouveau_drm_preclose,
+	.postclose = nouveau_drm_postclose,
+	.lastclose = nouveau_vga_lastclose,
+
+#if defined(CONFIG_DEBUG_FS)
+	.debugfs_init = nouveau_debugfs_init,
+	.debugfs_cleanup = nouveau_debugfs_takedown,
+#endif
+
+	.get_vblank_counter = drm_vblank_count,
+	.enable_vblank = nouveau_display_vblank_enable,
+	.disable_vblank = nouveau_display_vblank_disable,
+	.get_scanout_position = nouveau_display_scanoutpos,
+	.get_vblank_timestamp = nouveau_display_vblstamp,
+
+	.ioctls = nouveau_ioctls,
+	.num_ioctls = ARRAY_SIZE(nouveau_ioctls),
+	.fops = &nouveau_driver_fops,
+
+	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+	.gem_prime_export = drm_gem_prime_export,
+	.gem_prime_import = drm_gem_prime_import,
+	.gem_prime_pin = nouveau_gem_prime_pin,
+	.gem_prime_res_obj = nouveau_gem_prime_res_obj,
+	.gem_prime_unpin = nouveau_gem_prime_unpin,
+	.gem_prime_get_sg_table = nouveau_gem_prime_get_sg_table,
+	.gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table,
+	.gem_prime_vmap = nouveau_gem_prime_vmap,
+	.gem_prime_vunmap = nouveau_gem_prime_vunmap,
+
+	.gem_free_object = nouveau_gem_object_del,
+	.gem_open_object = nouveau_gem_object_open,
+	.gem_close_object = nouveau_gem_object_close,
+
+	.dumb_create = nouveau_display_dumb_create,
+	.dumb_map_offset = nouveau_display_dumb_map_offset,
+	.dumb_destroy = drm_gem_dumb_destroy,
+
+	.name = DRIVER_NAME,
+	.desc = DRIVER_DESC,
+#ifdef GIT_REVISION
+	.date = GIT_REVISION,
+#else
+	.date = DRIVER_DATE,
+#endif
+	.major = DRIVER_MAJOR,
+	.minor = DRIVER_MINOR,
+	.patchlevel = DRIVER_PATCHLEVEL,
+};
+
+static struct pci_device_id
+nouveau_drm_pci_table[] = {
+	{
+		PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
+		.class = PCI_BASE_CLASS_DISPLAY << 16,
+		.class_mask  = 0xff << 16,
+	},
+	{
+		PCI_DEVICE(PCI_VENDOR_ID_NVIDIA_SGS, PCI_ANY_ID),
+		.class = PCI_BASE_CLASS_DISPLAY << 16,
+		.class_mask  = 0xff << 16,
+	},
+	{}
+};
+
+static void nouveau_display_options(void)
+{
+	DRM_DEBUG_DRIVER("Loading Nouveau with parameters:\n");
+
+	DRM_DEBUG_DRIVER("... tv_disable   : %d\n", nouveau_tv_disable);
+	DRM_DEBUG_DRIVER("... ignorelid    : %d\n", nouveau_ignorelid);
+	DRM_DEBUG_DRIVER("... duallink     : %d\n", nouveau_duallink);
+	DRM_DEBUG_DRIVER("... nofbaccel    : %d\n", nouveau_nofbaccel);
+	DRM_DEBUG_DRIVER("... config       : %s\n", nouveau_config);
+	DRM_DEBUG_DRIVER("... debug        : %s\n", nouveau_debug);
+	DRM_DEBUG_DRIVER("... noaccel      : %d\n", nouveau_noaccel);
+	DRM_DEBUG_DRIVER("... modeset      : %d\n", nouveau_modeset);
+	DRM_DEBUG_DRIVER("... runpm        : %d\n", nouveau_runtime_pm);
+	DRM_DEBUG_DRIVER("... vram_pushbuf : %d\n", nouveau_vram_pushbuf);
+	DRM_DEBUG_DRIVER("... pstate       : %d\n", nouveau_pstate);
+}
+
+static const struct dev_pm_ops nouveau_pm_ops = {
+	.suspend = nouveau_pmops_suspend,
+	.resume = nouveau_pmops_resume,
+	.freeze = nouveau_pmops_freeze,
+	.thaw = nouveau_pmops_thaw,
+	.poweroff = nouveau_pmops_freeze,
+	.restore = nouveau_pmops_resume,
+	.runtime_suspend = nouveau_pmops_runtime_suspend,
+	.runtime_resume = nouveau_pmops_runtime_resume,
+	.runtime_idle = nouveau_pmops_runtime_idle,
+};
+
+static struct pci_driver
+nouveau_drm_pci_driver = {
+	.name = "nouveau",
+	.id_table = nouveau_drm_pci_table,
+	.probe = nouveau_drm_probe,
+	.remove = nouveau_drm_remove,
+	.driver.pm = &nouveau_pm_ops,
+};
+
+struct drm_device *
+nouveau_platform_device_create_(struct platform_device *pdev, int size,
+				void **pobject)
+{
+	struct drm_device *drm;
+	int err;
+
+	err = nvkm_device_create_(pdev, NVKM_BUS_PLATFORM,
+				  nouveau_platform_name(pdev),
+				  dev_name(&pdev->dev), nouveau_config,
+				  nouveau_debug, size, pobject);
+	if (err)
+		return ERR_PTR(err);
+
+	drm = drm_dev_alloc(&driver_platform, &pdev->dev);
+	if (!drm) {
+		err = -ENOMEM;
+		goto err_free;
+	}
+
+	err = drm_dev_set_unique(drm, "%s", dev_name(&pdev->dev));
+	if (err < 0)
+		goto err_free;
+
+	drm->platformdev = pdev;
+	platform_set_drvdata(pdev, drm);
+
+	return drm;
+
+err_free:
+	nvkm_object_ref(NULL, (struct nvkm_object **)pobject);
+
+	return ERR_PTR(err);
+}
+
+static int __init
+nouveau_drm_init(void)
+{
+	driver_pci = driver_stub;
+	driver_pci.set_busid = drm_pci_set_busid;
+	driver_platform = driver_stub;
+	driver_platform.set_busid = drm_platform_set_busid;
+
+	nouveau_display_options();
+
+	if (nouveau_modeset == -1) {
+#ifdef CONFIG_VGA_CONSOLE
+		if (vgacon_text_force())
+			nouveau_modeset = 0;
+#endif
+	}
+
+	if (!nouveau_modeset)
+		return 0;
+
+#ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
+	platform_driver_register(&nouveau_platform_driver);
+#endif
+
+	nouveau_register_dsm_handler();
+	return drm_pci_init(&driver_pci, &nouveau_drm_pci_driver);
+}
+
+static void __exit
+nouveau_drm_exit(void)
+{
+	if (!nouveau_modeset)
+		return;
+
+	drm_pci_exit(&driver_pci, &nouveau_drm_pci_driver);
+	nouveau_unregister_dsm_handler();
+
+#ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
+	platform_driver_unregister(&nouveau_platform_driver);
+#endif
+}
+
+module_init(nouveau_drm_init);
+module_exit(nouveau_drm_exit);
+
+MODULE_DEVICE_TABLE(pci, nouveau_drm_pci_table);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL and additional rights");