drivers/gpu/drm/nouveau/nouveau_drv.c - LeafOS-Devices/android_kernel_samsung_universal7904 - Gitiles

 /*
  * Copyright 2005 Stephane Marchesin.
  * All Rights Reserved.
  *
  * 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 (including the next
  * paragraph) 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
  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
  */

 #include <linux/console.h>

 #include "drmP.h"
 #include "drm.h"
 #include "drm_crtc_helper.h"
 #include "nouveau_drv.h"
 #include "nouveau_hw.h"
 #include "nouveau_fb.h"
 #include "nouveau_fbcon.h"
 #include "nv50_display.h"

 #include "drm_pciids.h"

 MODULE_PARM_DESC(noagp, "Disable AGP");
 int nouveau_noagp;
 module_param_named(noagp, nouveau_noagp, int, 0400);

 MODULE_PARM_DESC(modeset, "Enable kernel modesetting");
 static int nouveau_modeset = -1; /* kms */
 module_param_named(modeset, nouveau_modeset, int, 0400);

 MODULE_PARM_DESC(vbios, "Override default VBIOS location");
 char *nouveau_vbios;
 module_param_named(vbios, nouveau_vbios, charp, 0400);

 MODULE_PARM_DESC(vram_pushbuf, "Force DMA push buffers to be in VRAM");
 int nouveau_vram_pushbuf;
 module_param_named(vram_pushbuf, nouveau_vram_pushbuf, int, 0400);

 MODULE_PARM_DESC(vram_notify, "Force DMA notifiers to be in VRAM");
 int nouveau_vram_notify;
 module_param_named(vram_notify, nouveau_vram_notify, int, 0400);

 MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (>=GeForce 8)");
 int nouveau_duallink = 1;
 module_param_named(duallink, nouveau_duallink, int, 0400);

 MODULE_PARM_DESC(uscript_lvds, "LVDS output script table ID (>=GeForce 8)");
 int nouveau_uscript_lvds = -1;
 module_param_named(uscript_lvds, nouveau_uscript_lvds, int, 0400);

 MODULE_PARM_DESC(uscript_tmds, "TMDS output script table ID (>=GeForce 8)");
 int nouveau_uscript_tmds = -1;
 module_param_named(uscript_tmds, nouveau_uscript_tmds, int, 0400);

 MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
 		 "\t\tSupported: PAL, PAL-M, PAL-N, PAL-Nc, NTSC-M, NTSC-J,\n"
 		 "\t\t\thd480i, hd480p, hd576i, hd576p, hd720p, hd1080i.\n"
 		 "\t\tDefault: PAL\n"
 		 "\t\t*NOTE* Ignored for cards with external TV encoders.");
 char *nouveau_tv_norm;
 module_param_named(tv_norm, nouveau_tv_norm, charp, 0400);

 MODULE_PARM_DESC(reg_debug, "Register access debug bitmask:\n"
 		"\t\t0x1 mc, 0x2 video, 0x4 fb, 0x8 extdev,\n"
 		"\t\t0x10 crtc, 0x20 ramdac, 0x40 vgacrtc, 0x80 rmvio,\n"
 		"\t\t0x100 vgaattr, 0x200 EVO (G80+). ");
 int nouveau_reg_debug;
 module_param_named(reg_debug, nouveau_reg_debug, int, 0600);

 int nouveau_fbpercrtc;
 #if 0
 module_param_named(fbpercrtc, nouveau_fbpercrtc, int, 0400);
 #endif

 static struct pci_device_id pciidlist[] = {
 	{
 		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,
 	},
 	{}
 };

 MODULE_DEVICE_TABLE(pci, pciidlist);

 static struct drm_driver driver;

 static int __devinit
 nouveau_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	return drm_get_dev(pdev, ent, &driver);
 }

 static void
 nouveau_pci_remove(struct pci_dev *pdev)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);

 	drm_put_dev(dev);
 }

 static int
 nouveau_pci_suspend(struct pci_dev *pdev, pm_message_t pm_state)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
 	struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
 	struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 	struct nouveau_channel *chan;
 	struct drm_crtc *crtc;
 	uint32_t fbdev_flags;
 	int ret, i;

 	if (!drm_core_check_feature(dev, DRIVER_MODESET))
 		return -ENODEV;

 	if (pm_state.event == PM_EVENT_PRETHAW)
 		return 0;

 	fbdev_flags = dev_priv->fbdev_info->flags;
 	dev_priv->fbdev_info->flags |= FBINFO_HWACCEL_DISABLED;

 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct nouveau_framebuffer *nouveau_fb;

 		nouveau_fb = nouveau_framebuffer(crtc->fb);
 		if (!nouveau_fb || !nouveau_fb->nvbo)
 			continue;

 		nouveau_bo_unpin(nouveau_fb->nvbo);
 	}

 	NV_INFO(dev, "Evicting buffers...\n");
 	ttm_bo_evict_mm(&dev_priv->ttm.bdev, TTM_PL_VRAM);

 	NV_INFO(dev, "Idling channels...\n");
 	for (i = 0; i < pfifo->channels; i++) {
 		struct nouveau_fence *fence = NULL;

 		chan = dev_priv->fifos[i];
 		if (!chan || (dev_priv->card_type >= NV_50 &&
 			      chan == dev_priv->fifos[0]))
 			continue;

 		ret = nouveau_fence_new(chan, &fence, true);
 		if (ret == 0) {
 			ret = nouveau_fence_wait(fence, NULL, false, false);
 			nouveau_fence_unref((void *)&fence);
 		}

 		if (ret) {
 			NV_ERROR(dev, "Failed to idle channel %d for suspend\n",
 				 chan->id);
 		}
 	}

 	pgraph->fifo_access(dev, false);
 	nouveau_wait_for_idle(dev);
 	pfifo->reassign(dev, false);
 	pfifo->disable(dev);
 	pfifo->unload_context(dev);
 	pgraph->unload_context(dev);

 	NV_INFO(dev, "Suspending GPU objects...\n");
 	ret = nouveau_gpuobj_suspend(dev);
 	if (ret) {
 		NV_ERROR(dev, "... failed: %d\n", ret);
 		goto out_abort;
 	}

 	ret = pinstmem->suspend(dev);
 	if (ret) {
 		NV_ERROR(dev, "... failed: %d\n", ret);
 		nouveau_gpuobj_suspend_cleanup(dev);
 		goto out_abort;
 	}

 	NV_INFO(dev, "And we're gone!\n");
 	pci_save_state(pdev);
 	if (pm_state.event == PM_EVENT_SUSPEND) {
 		pci_disable_device(pdev);
 		pci_set_power_state(pdev, PCI_D3hot);
 	}

 	acquire_console_sem();
 	fb_set_suspend(dev_priv->fbdev_info, 1);
 	release_console_sem();
 	dev_priv->fbdev_info->flags = fbdev_flags;
 	return 0;

 out_abort:
 	NV_INFO(dev, "Re-enabling acceleration..\n");
 	pfifo->enable(dev);
 	pfifo->reassign(dev, true);
 	pgraph->fifo_access(dev, true);
 	return ret;
 }

 static int
 nouveau_pci_resume(struct pci_dev *pdev)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct nouveau_engine *engine = &dev_priv->engine;
 	struct drm_crtc *crtc;
 	uint32_t fbdev_flags;
 	int ret, i;

 	if (!drm_core_check_feature(dev, DRIVER_MODESET))
 		return -ENODEV;

 	fbdev_flags = dev_priv->fbdev_info->flags;
 	dev_priv->fbdev_info->flags |= FBINFO_HWACCEL_DISABLED;

 	NV_INFO(dev, "We're back, enabling device...\n");
 	pci_set_power_state(pdev, PCI_D0);
 	pci_restore_state(pdev);
 	if (pci_enable_device(pdev))
 		return -1;
 	pci_set_master(dev->pdev);

 	NV_INFO(dev, "POSTing device...\n");
 	ret = nouveau_run_vbios_init(dev);
 	if (ret)
 		return ret;

 	if (dev_priv->gart_info.type == NOUVEAU_GART_AGP) {
 		ret = nouveau_mem_init_agp(dev);
 		if (ret) {
 			NV_ERROR(dev, "error reinitialising AGP: %d\n", ret);
 			return ret;
 		}
 	}

 	NV_INFO(dev, "Reinitialising engines...\n");
 	engine->instmem.resume(dev);
 	engine->mc.init(dev);
 	engine->timer.init(dev);
 	engine->fb.init(dev);
 	engine->graph.init(dev);
 	engine->fifo.init(dev);

 	NV_INFO(dev, "Restoring GPU objects...\n");
 	nouveau_gpuobj_resume(dev);

 	nouveau_irq_postinstall(dev);

 	/* Re-write SKIPS, they'll have been lost over the suspend */
 	if (nouveau_vram_pushbuf) {
 		struct nouveau_channel *chan;
 		int j;

 		for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
 			chan = dev_priv->fifos[i];
 			if (!chan)
 				continue;

 			for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 				nouveau_bo_wr32(chan->pushbuf_bo, i, 0);
 		}
 	}

 	NV_INFO(dev, "Restoring mode...\n");
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct nouveau_framebuffer *nouveau_fb;

 		nouveau_fb = nouveau_framebuffer(crtc->fb);
 		if (!nouveau_fb || !nouveau_fb->nvbo)
 			continue;

 		nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
 	}

 	if (dev_priv->card_type < NV_50) {
 		nv04_display_restore(dev);
 		NVLockVgaCrtcs(dev, false);
 	} else
 		nv50_display_init(dev);

 	/* Force CLUT to get re-loaded during modeset */
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);

 		nv_crtc->lut.depth = 0;
 	}

 	acquire_console_sem();
 	fb_set_suspend(dev_priv->fbdev_info, 0);
 	release_console_sem();

 	nouveau_fbcon_zfill(dev);

 	drm_helper_resume_force_mode(dev);
 	dev_priv->fbdev_info->flags = fbdev_flags;
 	return 0;
 }

 static struct drm_driver driver = {
 	.driver_features =
 		DRIVER_USE_AGP | DRIVER_PCI_DMA | DRIVER_SG |
 		DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
 	.load = nouveau_load,
 	.firstopen = nouveau_firstopen,
 	.lastclose = nouveau_lastclose,
 	.unload = nouveau_unload,
 	.preclose = nouveau_preclose,
 #if defined(CONFIG_DRM_NOUVEAU_DEBUG)
 	.debugfs_init = nouveau_debugfs_init,
 	.debugfs_cleanup = nouveau_debugfs_takedown,
 #endif
 	.irq_preinstall = nouveau_irq_preinstall,
 	.irq_postinstall = nouveau_irq_postinstall,
 	.irq_uninstall = nouveau_irq_uninstall,
 	.irq_handler = nouveau_irq_handler,
 	.reclaim_buffers = drm_core_reclaim_buffers,
 	.get_map_ofs = drm_core_get_map_ofs,
 	.get_reg_ofs = drm_core_get_reg_ofs,
 	.ioctls = nouveau_ioctls,
 	.fops = {
 		.owner = THIS_MODULE,
 		.open = drm_open,
 		.release = drm_release,
 		.ioctl = drm_ioctl,
 		.mmap = nouveau_ttm_mmap,
 		.poll = drm_poll,
 		.fasync = drm_fasync,
 #if defined(CONFIG_COMPAT)
 		.compat_ioctl = nouveau_compat_ioctl,
 #endif
 	},
 	.pci_driver = {
 		.name = DRIVER_NAME,
 		.id_table = pciidlist,
 		.probe = nouveau_pci_probe,
 		.remove = nouveau_pci_remove,
 		.suspend = nouveau_pci_suspend,
 		.resume = nouveau_pci_resume
 	},

 	.gem_init_object = nouveau_gem_object_new,
 	.gem_free_object = nouveau_gem_object_del,

 	.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 int __init nouveau_init(void)
 {
 	driver.num_ioctls = nouveau_max_ioctl;

 	if (nouveau_modeset == -1) {
 #ifdef CONFIG_VGA_CONSOLE
 		if (vgacon_text_force())
 			nouveau_modeset = 0;
 		else
 #endif
 			nouveau_modeset = 1;
 	}

 	if (nouveau_modeset == 1)
 		driver.driver_features |= DRIVER_MODESET;

 	return drm_init(&driver);
 }

 static void __exit nouveau_exit(void)
 {
 	drm_exit(&driver);
 }

 module_init(nouveau_init);
 module_exit(nouveau_exit);

 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL and additional rights");
	/*
	* Copyright 2005 Stephane Marchesin.
	* All Rights Reserved.
	*
	* 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 (including the next
	* paragraph) 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
	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
	*/

	#include <linux/console.h>

	#include "drmP.h"
	#include "drm.h"
	#include "drm_crtc_helper.h"
	#include "nouveau_drv.h"
	#include "nouveau_hw.h"
	#include "nouveau_fb.h"
	#include "nouveau_fbcon.h"
	#include "nv50_display.h"

	#include "drm_pciids.h"

	MODULE_PARM_DESC(noagp, "Disable AGP");
	int nouveau_noagp;
	module_param_named(noagp, nouveau_noagp, int, 0400);

	MODULE_PARM_DESC(modeset, "Enable kernel modesetting");
	static int nouveau_modeset = -1; /* kms */
	module_param_named(modeset, nouveau_modeset, int, 0400);

	MODULE_PARM_DESC(vbios, "Override default VBIOS location");
	char *nouveau_vbios;
	module_param_named(vbios, nouveau_vbios, charp, 0400);

	MODULE_PARM_DESC(vram_pushbuf, "Force DMA push buffers to be in VRAM");
	int nouveau_vram_pushbuf;
	module_param_named(vram_pushbuf, nouveau_vram_pushbuf, int, 0400);

	MODULE_PARM_DESC(vram_notify, "Force DMA notifiers to be in VRAM");
	int nouveau_vram_notify;
	module_param_named(vram_notify, nouveau_vram_notify, int, 0400);

	MODULE_PARM_DESC(duallink, "Allow dual-link TMDS (>=GeForce 8)");
	int nouveau_duallink = 1;
	module_param_named(duallink, nouveau_duallink, int, 0400);

	MODULE_PARM_DESC(uscript_lvds, "LVDS output script table ID (>=GeForce 8)");
	int nouveau_uscript_lvds = -1;
	module_param_named(uscript_lvds, nouveau_uscript_lvds, int, 0400);

	MODULE_PARM_DESC(uscript_tmds, "TMDS output script table ID (>=GeForce 8)");
	int nouveau_uscript_tmds = -1;
	module_param_named(uscript_tmds, nouveau_uscript_tmds, int, 0400);

	MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
	"\t\tSupported: PAL, PAL-M, PAL-N, PAL-Nc, NTSC-M, NTSC-J,\n"
	"\t\t\thd480i, hd480p, hd576i, hd576p, hd720p, hd1080i.\n"
	"\t\tDefault: PAL\n"
	"\t\tNOTE Ignored for cards with external TV encoders.");
	char *nouveau_tv_norm;
	module_param_named(tv_norm, nouveau_tv_norm, charp, 0400);

	MODULE_PARM_DESC(reg_debug, "Register access debug bitmask:\n"
	"\t\t0x1 mc, 0x2 video, 0x4 fb, 0x8 extdev,\n"
	"\t\t0x10 crtc, 0x20 ramdac, 0x40 vgacrtc, 0x80 rmvio,\n"
	"\t\t0x100 vgaattr, 0x200 EVO (G80+). ");
	int nouveau_reg_debug;
	module_param_named(reg_debug, nouveau_reg_debug, int, 0600);

	int nouveau_fbpercrtc;
	#if 0
	module_param_named(fbpercrtc, nouveau_fbpercrtc, int, 0400);
	#endif

	static struct pci_device_id pciidlist[] = {
	{
	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,
	},
	{}
	};

	MODULE_DEVICE_TABLE(pci, pciidlist);

	static struct drm_driver driver;

	static int __devinit
	nouveau_pci_probe(struct pci_dev pdev, const struct pci_device_id ent)
	{
	return drm_get_dev(pdev, ent, &driver);
	}

	static void
	nouveau_pci_remove(struct pci_dev *pdev)
	{
	struct drm_device *dev = pci_get_drvdata(pdev);

	drm_put_dev(dev);
	}

	static int
	nouveau_pci_suspend(struct pci_dev *pdev, pm_message_t pm_state)
	{
	struct drm_device *dev = pci_get_drvdata(pdev);
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
	struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
	struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
	struct nouveau_channel *chan;
	struct drm_crtc *crtc;
	uint32_t fbdev_flags;
	int ret, i;

	if (!drm_core_check_feature(dev, DRIVER_MODESET))
	return -ENODEV;

	if (pm_state.event == PM_EVENT_PRETHAW)
	return 0;

	fbdev_flags = dev_priv->fbdev_info->flags;
	dev_priv->fbdev_info->flags \|= FBINFO_HWACCEL_DISABLED;

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
	struct nouveau_framebuffer *nouveau_fb;

	nouveau_fb = nouveau_framebuffer(crtc->fb);
	if (!nouveau_fb \|\| !nouveau_fb->nvbo)
	continue;

	nouveau_bo_unpin(nouveau_fb->nvbo);
	}

	NV_INFO(dev, "Evicting buffers...\n");
	ttm_bo_evict_mm(&dev_priv->ttm.bdev, TTM_PL_VRAM);

	NV_INFO(dev, "Idling channels...\n");
	for (i = 0; i < pfifo->channels; i++) {
	struct nouveau_fence *fence = NULL;

	chan = dev_priv->fifos[i];
	if (!chan \|\| (dev_priv->card_type >= NV_50 &&
	chan == dev_priv->fifos[0]))
	continue;

	ret = nouveau_fence_new(chan, &fence, true);
	if (ret == 0) {
	ret = nouveau_fence_wait(fence, NULL, false, false);
	nouveau_fence_unref((void *)&fence);
	}

	if (ret) {
	NV_ERROR(dev, "Failed to idle channel %d for suspend\n",
	chan->id);
	}
	}

	pgraph->fifo_access(dev, false);
	nouveau_wait_for_idle(dev);
	pfifo->reassign(dev, false);
	pfifo->disable(dev);
	pfifo->unload_context(dev);
	pgraph->unload_context(dev);

	NV_INFO(dev, "Suspending GPU objects...\n");
	ret = nouveau_gpuobj_suspend(dev);
	if (ret) {
	NV_ERROR(dev, "... failed: %d\n", ret);
	goto out_abort;
	}

	ret = pinstmem->suspend(dev);
	if (ret) {
	NV_ERROR(dev, "... failed: %d\n", ret);
	nouveau_gpuobj_suspend_cleanup(dev);
	goto out_abort;
	}

	NV_INFO(dev, "And we're gone!\n");
	pci_save_state(pdev);
	if (pm_state.event == PM_EVENT_SUSPEND) {
	pci_disable_device(pdev);
	pci_set_power_state(pdev, PCI_D3hot);
	}

	acquire_console_sem();
	fb_set_suspend(dev_priv->fbdev_info, 1);
	release_console_sem();
	dev_priv->fbdev_info->flags = fbdev_flags;
	return 0;

	out_abort:
	NV_INFO(dev, "Re-enabling acceleration..\n");
	pfifo->enable(dev);
	pfifo->reassign(dev, true);
	pgraph->fifo_access(dev, true);
	return ret;
	}

	static int
	nouveau_pci_resume(struct pci_dev *pdev)
	{
	struct drm_device *dev = pci_get_drvdata(pdev);
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_engine *engine = &dev_priv->engine;
	struct drm_crtc *crtc;
	uint32_t fbdev_flags;
	int ret, i;

	if (!drm_core_check_feature(dev, DRIVER_MODESET))
	return -ENODEV;

	fbdev_flags = dev_priv->fbdev_info->flags;
	dev_priv->fbdev_info->flags \|= FBINFO_HWACCEL_DISABLED;

	NV_INFO(dev, "We're back, enabling device...\n");
	pci_set_power_state(pdev, PCI_D0);
	pci_restore_state(pdev);
	if (pci_enable_device(pdev))
	return -1;
	pci_set_master(dev->pdev);

	NV_INFO(dev, "POSTing device...\n");
	ret = nouveau_run_vbios_init(dev);
	if (ret)
	return ret;

	if (dev_priv->gart_info.type == NOUVEAU_GART_AGP) {
	ret = nouveau_mem_init_agp(dev);
	if (ret) {
	NV_ERROR(dev, "error reinitialising AGP: %d\n", ret);
	return ret;
	}
	}

	NV_INFO(dev, "Reinitialising engines...\n");
	engine->instmem.resume(dev);
	engine->mc.init(dev);
	engine->timer.init(dev);
	engine->fb.init(dev);
	engine->graph.init(dev);
	engine->fifo.init(dev);

	NV_INFO(dev, "Restoring GPU objects...\n");
	nouveau_gpuobj_resume(dev);

	nouveau_irq_postinstall(dev);

	/* Re-write SKIPS, they'll have been lost over the suspend */
	if (nouveau_vram_pushbuf) {
	struct nouveau_channel *chan;
	int j;

	for (i = 0; i < dev_priv->engine.fifo.channels; i++) {
	chan = dev_priv->fifos[i];
	if (!chan)
	continue;

	for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
	nouveau_bo_wr32(chan->pushbuf_bo, i, 0);
	}
	}

	NV_INFO(dev, "Restoring mode...\n");
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
	struct nouveau_framebuffer *nouveau_fb;

	nouveau_fb = nouveau_framebuffer(crtc->fb);
	if (!nouveau_fb \|\| !nouveau_fb->nvbo)
	continue;

	nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
	}

	if (dev_priv->card_type < NV_50) {
	nv04_display_restore(dev);
	NVLockVgaCrtcs(dev, false);
	} else
	nv50_display_init(dev);

	/* Force CLUT to get re-loaded during modeset */
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);

	nv_crtc->lut.depth = 0;
	}

	acquire_console_sem();
	fb_set_suspend(dev_priv->fbdev_info, 0);
	release_console_sem();

	nouveau_fbcon_zfill(dev);

	drm_helper_resume_force_mode(dev);
	dev_priv->fbdev_info->flags = fbdev_flags;
	return 0;
	}

	static struct drm_driver driver = {
	.driver_features =
	DRIVER_USE_AGP \| DRIVER_PCI_DMA \| DRIVER_SG \|
	DRIVER_HAVE_IRQ \| DRIVER_IRQ_SHARED \| DRIVER_GEM,
	.load = nouveau_load,
	.firstopen = nouveau_firstopen,
	.lastclose = nouveau_lastclose,
	.unload = nouveau_unload,
	.preclose = nouveau_preclose,
	#if defined(CONFIG_DRM_NOUVEAU_DEBUG)
	.debugfs_init = nouveau_debugfs_init,
	.debugfs_cleanup = nouveau_debugfs_takedown,
	#endif
	.irq_preinstall = nouveau_irq_preinstall,
	.irq_postinstall = nouveau_irq_postinstall,
	.irq_uninstall = nouveau_irq_uninstall,
	.irq_handler = nouveau_irq_handler,
	.reclaim_buffers = drm_core_reclaim_buffers,
	.get_map_ofs = drm_core_get_map_ofs,
	.get_reg_ofs = drm_core_get_reg_ofs,
	.ioctls = nouveau_ioctls,
	.fops = {
	.owner = THIS_MODULE,
	.open = drm_open,
	.release = drm_release,
	.ioctl = drm_ioctl,
	.mmap = nouveau_ttm_mmap,
	.poll = drm_poll,
	.fasync = drm_fasync,
	#if defined(CONFIG_COMPAT)
	.compat_ioctl = nouveau_compat_ioctl,
	#endif
	},
	.pci_driver = {
	.name = DRIVER_NAME,
	.id_table = pciidlist,
	.probe = nouveau_pci_probe,
	.remove = nouveau_pci_remove,
	.suspend = nouveau_pci_suspend,
	.resume = nouveau_pci_resume
	},

	.gem_init_object = nouveau_gem_object_new,
	.gem_free_object = nouveau_gem_object_del,

	.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 int __init nouveau_init(void)
	{
	driver.num_ioctls = nouveau_max_ioctl;

	if (nouveau_modeset == -1) {
	#ifdef CONFIG_VGA_CONSOLE
	if (vgacon_text_force())
	nouveau_modeset = 0;
	else
	#endif
	nouveau_modeset = 1;
	}

	if (nouveau_modeset == 1)
	driver.driver_features \|= DRIVER_MODESET;

	return drm_init(&driver);
	}

	static void __exit nouveau_exit(void)
	{
	drm_exit(&driver);
	}

	module_init(nouveau_init);
	module_exit(nouveau_exit);

	MODULE_AUTHOR(DRIVER_AUTHOR);
	MODULE_DESCRIPTION(DRIVER_DESC);
	MODULE_LICENSE("GPL and additional rights");