drivers/gpu/drm/i915/i915_drv.c - fp2-dev/kernel/msm - Gitiles

 /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*-
  */
 /*
  *
  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
  * 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, sub license, 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 NON-INFRINGEMENT.
  * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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/device.h>
 #include "drmP.h"
 #include "drm.h"
 #include "i915_drm.h"
 #include "i915_drv.h"

 #include <linux/console.h>
 #include "drm_crtc_helper.h"

 static int i915_modeset = -1;
 module_param_named(modeset, i915_modeset, int, 0400);

 unsigned int i915_fbpercrtc = 0;
 module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);

 unsigned int i915_powersave = 1;
 module_param_named(powersave, i915_powersave, int, 0400);

 unsigned int i915_lvds_downclock = 0;
 module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400);

 static struct drm_driver driver;

 #define INTEL_VGA_DEVICE(id, info) {		\
 	.class = PCI_CLASS_DISPLAY_VGA << 8,	\
 	.class_mask = 0xffff00,			\
 	.vendor = 0x8086,			\
 	.device = id,				\
 	.subvendor = PCI_ANY_ID,		\
 	.subdevice = PCI_ANY_ID,		\
 	.driver_data = (unsigned long) info }

 const static struct intel_device_info intel_i830_info = {
 	.is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
 };

 const static struct intel_device_info intel_845g_info = {
 	.is_i8xx = 1,
 };

 const static struct intel_device_info intel_i85x_info = {
 	.is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
 };

 const static struct intel_device_info intel_i865g_info = {
 	.is_i8xx = 1,
 };

 const static struct intel_device_info intel_i915g_info = {
 	.is_i915g = 1, .is_i9xx = 1, .cursor_needs_physical = 1,
 };
 const static struct intel_device_info intel_i915gm_info = {
 	.is_i9xx = 1,  .is_mobile = 1, .has_fbc = 1,
 	.cursor_needs_physical = 1,
 };
 const static struct intel_device_info intel_i945g_info = {
 	.is_i9xx = 1, .has_hotplug = 1, .cursor_needs_physical = 1,
 };
 const static struct intel_device_info intel_i945gm_info = {
 	.is_i945gm = 1, .is_i9xx = 1, .is_mobile = 1, .has_fbc = 1,
 	.has_hotplug = 1, .cursor_needs_physical = 1,
 };

 const static struct intel_device_info intel_i965g_info = {
 	.is_i965g = 1, .is_i9xx = 1, .has_hotplug = 1,
 };

 const static struct intel_device_info intel_i965gm_info = {
 	.is_i965g = 1, .is_mobile = 1, .is_i965gm = 1, .is_i9xx = 1,
 	.is_mobile = 1, .has_fbc = 1, .has_rc6 = 1,
 	.has_hotplug = 1,
 };

 const static struct intel_device_info intel_g33_info = {
 	.is_g33 = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 	.has_hotplug = 1,
 };

 const static struct intel_device_info intel_g45_info = {
 	.is_i965g = 1, .is_g4x = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 	.has_pipe_cxsr = 1,
 	.has_hotplug = 1,
 };

 const static struct intel_device_info intel_gm45_info = {
 	.is_i965g = 1, .is_mobile = 1, .is_g4x = 1, .is_i9xx = 1,
 	.is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, .has_rc6 = 1,
 	.has_pipe_cxsr = 1,
 	.has_hotplug = 1,
 };

 const static struct intel_device_info intel_pineview_info = {
 	.is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .is_i9xx = 1,
 	.has_pipe_cxsr = 1,
 	.has_hotplug = 1,
 };

 const static struct intel_device_info intel_ironlake_d_info = {
 	.is_ironlake = 1, .is_i965g = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 	.has_pipe_cxsr = 1,
 	.has_hotplug = 1,
 };

 const static struct intel_device_info intel_ironlake_m_info = {
 	.is_ironlake = 1, .is_mobile = 1, .is_i965g = 1, .is_i9xx = 1,
 	.need_gfx_hws = 1, .has_rc6 = 1,
 	.has_hotplug = 1,
 };

 const static struct pci_device_id pciidlist[] = {
 	INTEL_VGA_DEVICE(0x3577, &intel_i830_info),
 	INTEL_VGA_DEVICE(0x2562, &intel_845g_info),
 	INTEL_VGA_DEVICE(0x3582, &intel_i85x_info),
 	INTEL_VGA_DEVICE(0x35e8, &intel_i85x_info),
 	INTEL_VGA_DEVICE(0x2572, &intel_i865g_info),
 	INTEL_VGA_DEVICE(0x2582, &intel_i915g_info),
 	INTEL_VGA_DEVICE(0x258a, &intel_i915g_info),
 	INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info),
 	INTEL_VGA_DEVICE(0x2772, &intel_i945g_info),
 	INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info),
 	INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info),
 	INTEL_VGA_DEVICE(0x2972, &intel_i965g_info),
 	INTEL_VGA_DEVICE(0x2982, &intel_i965g_info),
 	INTEL_VGA_DEVICE(0x2992, &intel_i965g_info),
 	INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info),
 	INTEL_VGA_DEVICE(0x29b2, &intel_g33_info),
 	INTEL_VGA_DEVICE(0x29c2, &intel_g33_info),
 	INTEL_VGA_DEVICE(0x29d2, &intel_g33_info),
 	INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info),
 	INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info),
 	INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info),
 	INTEL_VGA_DEVICE(0x2e02, &intel_g45_info),
 	INTEL_VGA_DEVICE(0x2e12, &intel_g45_info),
 	INTEL_VGA_DEVICE(0x2e22, &intel_g45_info),
 	INTEL_VGA_DEVICE(0x2e32, &intel_g45_info),
 	INTEL_VGA_DEVICE(0x2e42, &intel_g45_info),
 	INTEL_VGA_DEVICE(0xa001, &intel_pineview_info),
 	INTEL_VGA_DEVICE(0xa011, &intel_pineview_info),
 	INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info),
 	INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info),
 	{0, 0, 0}
 };

 #if defined(CONFIG_DRM_I915_KMS)
 MODULE_DEVICE_TABLE(pci, pciidlist);
 #endif

 static int i915_suspend(struct drm_device *dev, pm_message_t state)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;

 	if (!dev || !dev_priv) {
 		DRM_ERROR("dev: %p, dev_priv: %p\n", dev, dev_priv);
 		DRM_ERROR("DRM not initialized, aborting suspend.\n");
 		return -ENODEV;
 	}

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

 	pci_save_state(dev->pdev);

 	/* If KMS is active, we do the leavevt stuff here */
 	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 		if (i915_gem_idle(dev))
 			dev_err(&dev->pdev->dev,
 				"GEM idle failed, resume may fail\n");
 		drm_irq_uninstall(dev);
 	}

 	i915_save_state(dev);

 	intel_opregion_free(dev, 1);

 	if (state.event == PM_EVENT_SUSPEND) {
 		/* Shut down the device */
 		pci_disable_device(dev->pdev);
 		pci_set_power_state(dev->pdev, PCI_D3hot);
 	}

 	/* Modeset on resume, not lid events */
 	dev_priv->modeset_on_lid = 0;

 	return 0;
 }

 static int i915_resume(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	int ret = 0;

 	if (pci_enable_device(dev->pdev))
 		return -1;
 	pci_set_master(dev->pdev);

 	i915_restore_state(dev);

 	intel_opregion_init(dev, 1);

 	/* KMS EnterVT equivalent */
 	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 		mutex_lock(&dev->struct_mutex);
 		dev_priv->mm.suspended = 0;

 		ret = i915_gem_init_ringbuffer(dev);
 		if (ret != 0)
 			ret = -1;
 		mutex_unlock(&dev->struct_mutex);

 		drm_irq_install(dev);
 	}
 	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 		/* Resume the modeset for every activated CRTC */
 		drm_helper_resume_force_mode(dev);
 	}

 	dev_priv->modeset_on_lid = 0;

 	return ret;
 }

 /**
  * i965_reset - reset chip after a hang
  * @dev: drm device to reset
  * @flags: reset domains
  *
  * Reset the chip.  Useful if a hang is detected. Returns zero on successful
  * reset or otherwise an error code.
  *
  * Procedure is fairly simple:
  *   - reset the chip using the reset reg
  *   - re-init context state
  *   - re-init hardware status page
  *   - re-init ring buffer
  *   - re-init interrupt state
  *   - re-init display
  */
 int i965_reset(struct drm_device *dev, u8 flags)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	unsigned long timeout;
 	u8 gdrst;
 	/*
 	 * We really should only reset the display subsystem if we actually
 	 * need to
 	 */
 	bool need_display = true;

 	mutex_lock(&dev->struct_mutex);

 	/*
 	 * Clear request list
 	 */
 	i915_gem_retire_requests(dev);

 	if (need_display)
 		i915_save_display(dev);

 	if (IS_I965G(dev) || IS_G4X(dev)) {
 		/*
 		 * Set the domains we want to reset, then the reset bit (bit 0).
 		 * Clear the reset bit after a while and wait for hardware status
 		 * bit (bit 1) to be set
 		 */
 		pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 		pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0));
 		udelay(50);
 		pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);

 		/* ...we don't want to loop forever though, 500ms should be plenty */
 	       timeout = jiffies + msecs_to_jiffies(500);
 		do {
 			udelay(100);
 			pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 		} while ((gdrst & 0x1) && time_after(timeout, jiffies));

 		if (gdrst & 0x1) {
 			WARN(true, "i915: Failed to reset chip\n");
 			mutex_unlock(&dev->struct_mutex);
 			return -EIO;
 		}
 	} else {
 		DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
 		return -ENODEV;
 	}

 	/* Ok, now get things going again... */

 	/*
 	 * Everything depends on having the GTT running, so we need to start
 	 * there.  Fortunately we don't need to do this unless we reset the
 	 * chip at a PCI level.
 	 *
 	 * Next we need to restore the context, but we don't use those
 	 * yet either...
 	 *
 	 * Ring buffer needs to be re-initialized in the KMS case, or if X
 	 * was running at the time of the reset (i.e. we weren't VT
 	 * switched away).
 	 */
 	if (drm_core_check_feature(dev, DRIVER_MODESET) ||
 	    !dev_priv->mm.suspended) {
 		drm_i915_ring_buffer_t *ring = &dev_priv->ring;
 		struct drm_gem_object *obj = ring->ring_obj;
 		struct drm_i915_gem_object *obj_priv = obj->driver_private;
 		dev_priv->mm.suspended = 0;

 		/* Stop the ring if it's running. */
 		I915_WRITE(PRB0_CTL, 0);
 		I915_WRITE(PRB0_TAIL, 0);
 		I915_WRITE(PRB0_HEAD, 0);

 		/* Initialize the ring. */
 		I915_WRITE(PRB0_START, obj_priv->gtt_offset);
 		I915_WRITE(PRB0_CTL,
 			   ((obj->size - 4096) & RING_NR_PAGES) |
 			   RING_NO_REPORT |
 			   RING_VALID);
 		if (!drm_core_check_feature(dev, DRIVER_MODESET))
 			i915_kernel_lost_context(dev);
 		else {
 			ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 			ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 			ring->space = ring->head - (ring->tail + 8);
 			if (ring->space < 0)
 				ring->space += ring->Size;
 		}

 		mutex_unlock(&dev->struct_mutex);
 		drm_irq_uninstall(dev);
 		drm_irq_install(dev);
 		mutex_lock(&dev->struct_mutex);
 	}

 	/*
 	 * Display needs restore too...
 	 */
 	if (need_display)
 		i915_restore_display(dev);

 	mutex_unlock(&dev->struct_mutex);
 	return 0;
 }


 static int __devinit
 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	return drm_get_dev(pdev, ent, &driver);
 }

 static void
 i915_pci_remove(struct pci_dev *pdev)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);

 	drm_put_dev(dev);
 }

 static int
 i915_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);

 	return i915_suspend(dev, state);
 }

 static int
 i915_pci_resume(struct pci_dev *pdev)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);

 	return i915_resume(dev);
 }

 static int
 i915_pm_suspend(struct device *dev)
 {
 	return i915_pci_suspend(to_pci_dev(dev), PMSG_SUSPEND);
 }

 static int
 i915_pm_resume(struct device *dev)
 {
 	return i915_pci_resume(to_pci_dev(dev));
 }

 static int
 i915_pm_freeze(struct device *dev)
 {
 	return i915_pci_suspend(to_pci_dev(dev), PMSG_FREEZE);
 }

 static int
 i915_pm_thaw(struct device *dev)
 {
 	/* thaw during hibernate, do nothing! */
 	return 0;
 }

 static int
 i915_pm_poweroff(struct device *dev)
 {
 	return i915_pci_suspend(to_pci_dev(dev), PMSG_HIBERNATE);
 }

 static int
 i915_pm_restore(struct device *dev)
 {
 	return i915_pci_resume(to_pci_dev(dev));
 }

 const struct dev_pm_ops i915_pm_ops = {
      .suspend = i915_pm_suspend,
      .resume = i915_pm_resume,
      .freeze = i915_pm_freeze,
      .thaw = i915_pm_thaw,
      .poweroff = i915_pm_poweroff,
      .restore = i915_pm_restore,
 };

 static struct vm_operations_struct i915_gem_vm_ops = {
 	.fault = i915_gem_fault,
 	.open = drm_gem_vm_open,
 	.close = drm_gem_vm_close,
 };

 static struct drm_driver driver = {
 	/* don't use mtrr's here, the Xserver or user space app should
 	 * deal with them for intel hardware.
 	 */
 	.driver_features =
 	    DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
 	    DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
 	.load = i915_driver_load,
 	.unload = i915_driver_unload,
 	.open = i915_driver_open,
 	.lastclose = i915_driver_lastclose,
 	.preclose = i915_driver_preclose,
 	.postclose = i915_driver_postclose,

 	/* Used in place of i915_pm_ops for non-DRIVER_MODESET */
 	.suspend = i915_suspend,
 	.resume = i915_resume,

 	.device_is_agp = i915_driver_device_is_agp,
 	.enable_vblank = i915_enable_vblank,
 	.disable_vblank = i915_disable_vblank,
 	.irq_preinstall = i915_driver_irq_preinstall,
 	.irq_postinstall = i915_driver_irq_postinstall,
 	.irq_uninstall = i915_driver_irq_uninstall,
 	.irq_handler = i915_driver_irq_handler,
 	.reclaim_buffers = drm_core_reclaim_buffers,
 	.get_map_ofs = drm_core_get_map_ofs,
 	.get_reg_ofs = drm_core_get_reg_ofs,
 	.master_create = i915_master_create,
 	.master_destroy = i915_master_destroy,
 #if defined(CONFIG_DEBUG_FS)
 	.debugfs_init = i915_debugfs_init,
 	.debugfs_cleanup = i915_debugfs_cleanup,
 #endif
 	.gem_init_object = i915_gem_init_object,
 	.gem_free_object = i915_gem_free_object,
 	.gem_vm_ops = &i915_gem_vm_ops,
 	.ioctls = i915_ioctls,
 	.fops = {
 		 .owner = THIS_MODULE,
 		 .open = drm_open,
 		 .release = drm_release,
 		 .unlocked_ioctl = drm_ioctl,
 		 .mmap = drm_gem_mmap,
 		 .poll = drm_poll,
 		 .fasync = drm_fasync,
 		 .read = drm_read,
 #ifdef CONFIG_COMPAT
 		 .compat_ioctl = i915_compat_ioctl,
 #endif
 	},

 	.pci_driver = {
 		 .name = DRIVER_NAME,
 		 .id_table = pciidlist,
 		 .probe = i915_pci_probe,
 		 .remove = i915_pci_remove,
 		 .driver.pm = &i915_pm_ops,
 	},

 	.name = DRIVER_NAME,
 	.desc = DRIVER_DESC,
 	.date = DRIVER_DATE,
 	.major = DRIVER_MAJOR,
 	.minor = DRIVER_MINOR,
 	.patchlevel = DRIVER_PATCHLEVEL,
 };

 static int __init i915_init(void)
 {
 	driver.num_ioctls = i915_max_ioctl;

 	i915_gem_shrinker_init();

 	/*
 	 * If CONFIG_DRM_I915_KMS is set, default to KMS unless
 	 * explicitly disabled with the module pararmeter.
 	 *
 	 * Otherwise, just follow the parameter (defaulting to off).
 	 *
 	 * Allow optional vga_text_mode_force boot option to override
 	 * the default behavior.
 	 */
 #if defined(CONFIG_DRM_I915_KMS)
 	if (i915_modeset != 0)
 		driver.driver_features |= DRIVER_MODESET;
 #endif
 	if (i915_modeset == 1)
 		driver.driver_features |= DRIVER_MODESET;

 #ifdef CONFIG_VGA_CONSOLE
 	if (vgacon_text_force() && i915_modeset == -1)
 		driver.driver_features &= ~DRIVER_MODESET;
 #endif

 	return drm_init(&driver);
 }

 static void __exit i915_exit(void)
 {
 	i915_gem_shrinker_exit();
 	drm_exit(&driver);
 }

 module_init(i915_init);
 module_exit(i915_exit);

 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL and additional rights");
	/* i915_drv.c -- i830,i845,i855,i865,i915 driver -- linux-c --
	*/
	/*
	*
	* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
	* 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, sub license, 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 NON-INFRINGEMENT.
	* IN NO EVENT SHALL TUNGSTEN GRAPHICS 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/device.h>
	#include "drmP.h"
	#include "drm.h"
	#include "i915_drm.h"
	#include "i915_drv.h"

	#include <linux/console.h>
	#include "drm_crtc_helper.h"

	static int i915_modeset = -1;
	module_param_named(modeset, i915_modeset, int, 0400);

	unsigned int i915_fbpercrtc = 0;
	module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);

	unsigned int i915_powersave = 1;
	module_param_named(powersave, i915_powersave, int, 0400);

	unsigned int i915_lvds_downclock = 0;
	module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400);

	static struct drm_driver driver;

	#define INTEL_VGA_DEVICE(id, info) { \
	.class = PCI_CLASS_DISPLAY_VGA << 8, \
	.class_mask = 0xffff00, \
	.vendor = 0x8086, \
	.device = id, \
	.subvendor = PCI_ANY_ID, \
	.subdevice = PCI_ANY_ID, \
	.driver_data = (unsigned long) info }

	const static struct intel_device_info intel_i830_info = {
	.is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
	};

	const static struct intel_device_info intel_845g_info = {
	.is_i8xx = 1,
	};

	const static struct intel_device_info intel_i85x_info = {
	.is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
	};

	const static struct intel_device_info intel_i865g_info = {
	.is_i8xx = 1,
	};

	const static struct intel_device_info intel_i915g_info = {
	.is_i915g = 1, .is_i9xx = 1, .cursor_needs_physical = 1,
	};
	const static struct intel_device_info intel_i915gm_info = {
	.is_i9xx = 1, .is_mobile = 1, .has_fbc = 1,
	.cursor_needs_physical = 1,
	};
	const static struct intel_device_info intel_i945g_info = {
	.is_i9xx = 1, .has_hotplug = 1, .cursor_needs_physical = 1,
	};
	const static struct intel_device_info intel_i945gm_info = {
	.is_i945gm = 1, .is_i9xx = 1, .is_mobile = 1, .has_fbc = 1,
	.has_hotplug = 1, .cursor_needs_physical = 1,
	};

	const static struct intel_device_info intel_i965g_info = {
	.is_i965g = 1, .is_i9xx = 1, .has_hotplug = 1,
	};

	const static struct intel_device_info intel_i965gm_info = {
	.is_i965g = 1, .is_mobile = 1, .is_i965gm = 1, .is_i9xx = 1,
	.is_mobile = 1, .has_fbc = 1, .has_rc6 = 1,
	.has_hotplug = 1,
	};

	const static struct intel_device_info intel_g33_info = {
	.is_g33 = 1, .is_i9xx = 1, .need_gfx_hws = 1,
	.has_hotplug = 1,
	};

	const static struct intel_device_info intel_g45_info = {
	.is_i965g = 1, .is_g4x = 1, .is_i9xx = 1, .need_gfx_hws = 1,
	.has_pipe_cxsr = 1,
	.has_hotplug = 1,
	};

	const static struct intel_device_info intel_gm45_info = {
	.is_i965g = 1, .is_mobile = 1, .is_g4x = 1, .is_i9xx = 1,
	.is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, .has_rc6 = 1,
	.has_pipe_cxsr = 1,
	.has_hotplug = 1,
	};

	const static struct intel_device_info intel_pineview_info = {
	.is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .is_i9xx = 1,
	.has_pipe_cxsr = 1,
	.has_hotplug = 1,
	};

	const static struct intel_device_info intel_ironlake_d_info = {
	.is_ironlake = 1, .is_i965g = 1, .is_i9xx = 1, .need_gfx_hws = 1,
	.has_pipe_cxsr = 1,
	.has_hotplug = 1,
	};

	const static struct intel_device_info intel_ironlake_m_info = {
	.is_ironlake = 1, .is_mobile = 1, .is_i965g = 1, .is_i9xx = 1,
	.need_gfx_hws = 1, .has_rc6 = 1,
	.has_hotplug = 1,
	};

	const static struct pci_device_id pciidlist[] = {
	INTEL_VGA_DEVICE(0x3577, &intel_i830_info),
	INTEL_VGA_DEVICE(0x2562, &intel_845g_info),
	INTEL_VGA_DEVICE(0x3582, &intel_i85x_info),
	INTEL_VGA_DEVICE(0x35e8, &intel_i85x_info),
	INTEL_VGA_DEVICE(0x2572, &intel_i865g_info),
	INTEL_VGA_DEVICE(0x2582, &intel_i915g_info),
	INTEL_VGA_DEVICE(0x258a, &intel_i915g_info),
	INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info),
	INTEL_VGA_DEVICE(0x2772, &intel_i945g_info),
	INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info),
	INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info),
	INTEL_VGA_DEVICE(0x2972, &intel_i965g_info),
	INTEL_VGA_DEVICE(0x2982, &intel_i965g_info),
	INTEL_VGA_DEVICE(0x2992, &intel_i965g_info),
	INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info),
	INTEL_VGA_DEVICE(0x29b2, &intel_g33_info),
	INTEL_VGA_DEVICE(0x29c2, &intel_g33_info),
	INTEL_VGA_DEVICE(0x29d2, &intel_g33_info),
	INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info),
	INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info),
	INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info),
	INTEL_VGA_DEVICE(0x2e02, &intel_g45_info),
	INTEL_VGA_DEVICE(0x2e12, &intel_g45_info),
	INTEL_VGA_DEVICE(0x2e22, &intel_g45_info),
	INTEL_VGA_DEVICE(0x2e32, &intel_g45_info),
	INTEL_VGA_DEVICE(0x2e42, &intel_g45_info),
	INTEL_VGA_DEVICE(0xa001, &intel_pineview_info),
	INTEL_VGA_DEVICE(0xa011, &intel_pineview_info),
	INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info),
	INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info),
	{0, 0, 0}
	};

	#if defined(CONFIG_DRM_I915_KMS)
	MODULE_DEVICE_TABLE(pci, pciidlist);
	#endif

	static int i915_suspend(struct drm_device *dev, pm_message_t state)
	{
	struct drm_i915_private *dev_priv = dev->dev_private;

	if (!dev \|\| !dev_priv) {
	DRM_ERROR("dev: %p, dev_priv: %p\n", dev, dev_priv);
	DRM_ERROR("DRM not initialized, aborting suspend.\n");
	return -ENODEV;
	}

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

	pci_save_state(dev->pdev);

	/* If KMS is active, we do the leavevt stuff here */
	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	if (i915_gem_idle(dev))
	dev_err(&dev->pdev->dev,
	"GEM idle failed, resume may fail\n");
	drm_irq_uninstall(dev);
	}

	i915_save_state(dev);

	intel_opregion_free(dev, 1);

	if (state.event == PM_EVENT_SUSPEND) {
	/* Shut down the device */
	pci_disable_device(dev->pdev);
	pci_set_power_state(dev->pdev, PCI_D3hot);
	}

	/* Modeset on resume, not lid events */
	dev_priv->modeset_on_lid = 0;

	return 0;
	}

	static int i915_resume(struct drm_device *dev)
	{
	struct drm_i915_private *dev_priv = dev->dev_private;
	int ret = 0;

	if (pci_enable_device(dev->pdev))
	return -1;
	pci_set_master(dev->pdev);

	i915_restore_state(dev);

	intel_opregion_init(dev, 1);

	/* KMS EnterVT equivalent */
	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	mutex_lock(&dev->struct_mutex);
	dev_priv->mm.suspended = 0;

	ret = i915_gem_init_ringbuffer(dev);
	if (ret != 0)
	ret = -1;
	mutex_unlock(&dev->struct_mutex);

	drm_irq_install(dev);
	}
	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	/* Resume the modeset for every activated CRTC */
	drm_helper_resume_force_mode(dev);
	}

	dev_priv->modeset_on_lid = 0;

	return ret;
	}

	/**
	* i965_reset - reset chip after a hang
	* @dev: drm device to reset
	* @flags: reset domains
	*
	* Reset the chip. Useful if a hang is detected. Returns zero on successful
	* reset or otherwise an error code.
	*
	* Procedure is fairly simple:
	* - reset the chip using the reset reg
	* - re-init context state
	* - re-init hardware status page
	* - re-init ring buffer
	* - re-init interrupt state
	* - re-init display
	*/
	int i965_reset(struct drm_device *dev, u8 flags)
	{
	drm_i915_private_t *dev_priv = dev->dev_private;
	unsigned long timeout;
	u8 gdrst;
	/*
	* We really should only reset the display subsystem if we actually
	* need to
	*/
	bool need_display = true;

	mutex_lock(&dev->struct_mutex);

	/*
	* Clear request list
	*/
	i915_gem_retire_requests(dev);

	if (need_display)
	i915_save_display(dev);

	if (IS_I965G(dev) \|\| IS_G4X(dev)) {
	/*
	* Set the domains we want to reset, then the reset bit (bit 0).
	* Clear the reset bit after a while and wait for hardware status
	* bit (bit 1) to be set
	*/
	pci_read_config_byte(dev->pdev, GDRST, &gdrst);
	pci_write_config_byte(dev->pdev, GDRST, gdrst \| flags \| ((flags == GDRST_FULL) ? 0x1 : 0x0));
	udelay(50);
	pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);

	/* ...we don't want to loop forever though, 500ms should be plenty */
	timeout = jiffies + msecs_to_jiffies(500);
	do {
	udelay(100);
	pci_read_config_byte(dev->pdev, GDRST, &gdrst);
	} while ((gdrst & 0x1) && time_after(timeout, jiffies));

	if (gdrst & 0x1) {
	WARN(true, "i915: Failed to reset chip\n");
	mutex_unlock(&dev->struct_mutex);
	return -EIO;
	}
	} else {
	DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
	return -ENODEV;
	}

	/* Ok, now get things going again... */

	/*
	* Everything depends on having the GTT running, so we need to start
	* there. Fortunately we don't need to do this unless we reset the
	* chip at a PCI level.
	*
	* Next we need to restore the context, but we don't use those
	* yet either...
	*
	* Ring buffer needs to be re-initialized in the KMS case, or if X
	* was running at the time of the reset (i.e. we weren't VT
	* switched away).
	*/
	if (drm_core_check_feature(dev, DRIVER_MODESET) \|\|
	!dev_priv->mm.suspended) {
	drm_i915_ring_buffer_t *ring = &dev_priv->ring;
	struct drm_gem_object *obj = ring->ring_obj;
	struct drm_i915_gem_object *obj_priv = obj->driver_private;
	dev_priv->mm.suspended = 0;

	/* Stop the ring if it's running. */
	I915_WRITE(PRB0_CTL, 0);
	I915_WRITE(PRB0_TAIL, 0);
	I915_WRITE(PRB0_HEAD, 0);

	/* Initialize the ring. */
	I915_WRITE(PRB0_START, obj_priv->gtt_offset);
	I915_WRITE(PRB0_CTL,
	((obj->size - 4096) & RING_NR_PAGES) \|
	RING_NO_REPORT \|
	RING_VALID);
	if (!drm_core_check_feature(dev, DRIVER_MODESET))
	i915_kernel_lost_context(dev);
	else {
	ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
	ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
	ring->space = ring->head - (ring->tail + 8);
	if (ring->space < 0)
	ring->space += ring->Size;
	}

	mutex_unlock(&dev->struct_mutex);
	drm_irq_uninstall(dev);
	drm_irq_install(dev);
	mutex_lock(&dev->struct_mutex);
	}

	/*
	* Display needs restore too...
	*/
	if (need_display)
	i915_restore_display(dev);

	mutex_unlock(&dev->struct_mutex);
	return 0;
	}


	static int __devinit
	i915_pci_probe(struct pci_dev pdev, const struct pci_device_id ent)
	{
	return drm_get_dev(pdev, ent, &driver);
	}

	static void
	i915_pci_remove(struct pci_dev *pdev)
	{
	struct drm_device *dev = pci_get_drvdata(pdev);

	drm_put_dev(dev);
	}

	static int
	i915_pci_suspend(struct pci_dev *pdev, pm_message_t state)
	{
	struct drm_device *dev = pci_get_drvdata(pdev);

	return i915_suspend(dev, state);
	}

	static int
	i915_pci_resume(struct pci_dev *pdev)
	{
	struct drm_device *dev = pci_get_drvdata(pdev);

	return i915_resume(dev);
	}

	static int
	i915_pm_suspend(struct device *dev)
	{
	return i915_pci_suspend(to_pci_dev(dev), PMSG_SUSPEND);
	}

	static int
	i915_pm_resume(struct device *dev)
	{
	return i915_pci_resume(to_pci_dev(dev));
	}

	static int
	i915_pm_freeze(struct device *dev)
	{
	return i915_pci_suspend(to_pci_dev(dev), PMSG_FREEZE);
	}

	static int
	i915_pm_thaw(struct device *dev)
	{
	/* thaw during hibernate, do nothing! */
	return 0;
	}

	static int
	i915_pm_poweroff(struct device *dev)
	{
	return i915_pci_suspend(to_pci_dev(dev), PMSG_HIBERNATE);
	}

	static int
	i915_pm_restore(struct device *dev)
	{
	return i915_pci_resume(to_pci_dev(dev));
	}

	const struct dev_pm_ops i915_pm_ops = {
	.suspend = i915_pm_suspend,
	.resume = i915_pm_resume,
	.freeze = i915_pm_freeze,
	.thaw = i915_pm_thaw,
	.poweroff = i915_pm_poweroff,
	.restore = i915_pm_restore,
	};

	static struct vm_operations_struct i915_gem_vm_ops = {
	.fault = i915_gem_fault,
	.open = drm_gem_vm_open,
	.close = drm_gem_vm_close,
	};

	static struct drm_driver driver = {
	/* don't use mtrr's here, the Xserver or user space app should
	* deal with them for intel hardware.
	*/
	.driver_features =
	DRIVER_USE_AGP \| DRIVER_REQUIRE_AGP \| /* DRIVER_USE_MTRR \|*/
	DRIVER_HAVE_IRQ \| DRIVER_IRQ_SHARED \| DRIVER_GEM,
	.load = i915_driver_load,
	.unload = i915_driver_unload,
	.open = i915_driver_open,
	.lastclose = i915_driver_lastclose,
	.preclose = i915_driver_preclose,
	.postclose = i915_driver_postclose,

	/* Used in place of i915_pm_ops for non-DRIVER_MODESET */
	.suspend = i915_suspend,
	.resume = i915_resume,

	.device_is_agp = i915_driver_device_is_agp,
	.enable_vblank = i915_enable_vblank,
	.disable_vblank = i915_disable_vblank,
	.irq_preinstall = i915_driver_irq_preinstall,
	.irq_postinstall = i915_driver_irq_postinstall,
	.irq_uninstall = i915_driver_irq_uninstall,
	.irq_handler = i915_driver_irq_handler,
	.reclaim_buffers = drm_core_reclaim_buffers,
	.get_map_ofs = drm_core_get_map_ofs,
	.get_reg_ofs = drm_core_get_reg_ofs,
	.master_create = i915_master_create,
	.master_destroy = i915_master_destroy,
	#if defined(CONFIG_DEBUG_FS)
	.debugfs_init = i915_debugfs_init,
	.debugfs_cleanup = i915_debugfs_cleanup,
	#endif
	.gem_init_object = i915_gem_init_object,
	.gem_free_object = i915_gem_free_object,
	.gem_vm_ops = &i915_gem_vm_ops,
	.ioctls = i915_ioctls,
	.fops = {
	.owner = THIS_MODULE,
	.open = drm_open,
	.release = drm_release,
	.unlocked_ioctl = drm_ioctl,
	.mmap = drm_gem_mmap,
	.poll = drm_poll,
	.fasync = drm_fasync,
	.read = drm_read,
	#ifdef CONFIG_COMPAT
	.compat_ioctl = i915_compat_ioctl,
	#endif
	},

	.pci_driver = {
	.name = DRIVER_NAME,
	.id_table = pciidlist,
	.probe = i915_pci_probe,
	.remove = i915_pci_remove,
	.driver.pm = &i915_pm_ops,
	},

	.name = DRIVER_NAME,
	.desc = DRIVER_DESC,
	.date = DRIVER_DATE,
	.major = DRIVER_MAJOR,
	.minor = DRIVER_MINOR,
	.patchlevel = DRIVER_PATCHLEVEL,
	};

	static int __init i915_init(void)
	{
	driver.num_ioctls = i915_max_ioctl;

	i915_gem_shrinker_init();

	/*
	* If CONFIG_DRM_I915_KMS is set, default to KMS unless
	* explicitly disabled with the module pararmeter.
	*
	* Otherwise, just follow the parameter (defaulting to off).
	*
	* Allow optional vga_text_mode_force boot option to override
	* the default behavior.
	*/
	#if defined(CONFIG_DRM_I915_KMS)
	if (i915_modeset != 0)
	driver.driver_features \|= DRIVER_MODESET;
	#endif
	if (i915_modeset == 1)
	driver.driver_features \|= DRIVER_MODESET;

	#ifdef CONFIG_VGA_CONSOLE
	if (vgacon_text_force() && i915_modeset == -1)
	driver.driver_features &= ~DRIVER_MODESET;
	#endif

	return drm_init(&driver);
	}

	static void __exit i915_exit(void)
	{
	i915_gem_shrinker_exit();
	drm_exit(&driver);
	}

	module_init(i915_init);
	module_exit(i915_exit);

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