[net-next-2.6.git] / drivers / gpu / drm / i915 / i915_drv.c

/* 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);

static struct drm_driver driver;

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

static struct pci_device_id pciidlist[] = {
	INTEL_VGA_DEVICE(0x3577),
	INTEL_VGA_DEVICE(0x2562),
	INTEL_VGA_DEVICE(0x3582),
	INTEL_VGA_DEVICE(0x2572),
	INTEL_VGA_DEVICE(0x2582),
	INTEL_VGA_DEVICE(0x258a),
	INTEL_VGA_DEVICE(0x2592),
	INTEL_VGA_DEVICE(0x2772),
	INTEL_VGA_DEVICE(0x27a2),
	INTEL_VGA_DEVICE(0x27ae),
	INTEL_VGA_DEVICE(0x2972),
	INTEL_VGA_DEVICE(0x2982),
	INTEL_VGA_DEVICE(0x2992),
	INTEL_VGA_DEVICE(0x29a2),
	INTEL_VGA_DEVICE(0x29b2),
	INTEL_VGA_DEVICE(0x29c2),
	INTEL_VGA_DEVICE(0x29d2),
	INTEL_VGA_DEVICE(0x2a02),
	INTEL_VGA_DEVICE(0x2a12),
	INTEL_VGA_DEVICE(0x2a42),
	INTEL_VGA_DEVICE(0x2e02),
	INTEL_VGA_DEVICE(0x2e12),
	INTEL_VGA_DEVICE(0x2e22),
	INTEL_VGA_DEVICE(0x2e32),
	INTEL_VGA_DEVICE(0x2e42),
	INTEL_VGA_DEVICE(0xa001),
	INTEL_VGA_DEVICE(0xa011),
	INTEL_VGA_DEVICE(0x35e8),
	INTEL_VGA_DEVICE(0x0042),
	INTEL_VGA_DEVICE(0x0046),
	{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,
	.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,
		 .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");
Commit	Line	Data
1da177e4 LT	1	/* i915_drv.c -- i830,i845,i855,i865,i915 driver -- linux-c --
1da177e4 LT	2	*/
0d6aa60b	3	/*
bc54fd1a	4	*
1da177e4 LT	5	* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
1da177e4 LT	6	* All Rights Reserved.
bc54fd1a DA	7	*
	8	* Permission is hereby granted, free of charge, to any person obtaining a
	9	* copy of this software and associated documentation files (the
	10	* "Software"), to deal in the Software without restriction, including
	11	* without limitation the rights to use, copy, modify, merge, publish,
	12	* distribute, sub license, and/or sell copies of the Software, and to
	13	* permit persons to whom the Software is furnished to do so, subject to
	14	* the following conditions:
	15	*
	16	* The above copyright notice and this permission notice (including the
	17	* next paragraph) shall be included in all copies or substantial portions
	18	* of the Software.
	19	*
	20	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
	21	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	22	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
	23	* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
	24	* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	25	* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	26	* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	27	*
0d6aa60b	28	*/
1da177e4	29
5669fcac	30	#include <linux/device.h>
1da177e4 LT	31	#include "drmP.h"
	32	#include "drm.h"
	33	#include "i915_drm.h"
	34	#include "i915_drv.h"
	35
79e53945	36	#include <linux/console.h>
354ff967	37	#include "drm_crtc_helper.h"
79e53945	38
d6073d77	39	static int i915_modeset = -1;
79e53945 JB	40	module_param_named(modeset, i915_modeset, int, 0400);
	41
	42	unsigned int i915_fbpercrtc = 0;
	43	module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
1da177e4	44
652c393a JB	45	unsigned int i915_powersave = 1;
	46	module_param_named(powersave, i915_powersave, int, 0400);
	47
112b715e KH	48	static struct drm_driver driver;
112b715e KH	49
49ae35f2 KH	50	#define INTEL_VGA_DEVICE(id) { \
	51	.class = PCI_CLASS_DISPLAY_VGA << 8, \
	52	.class_mask = 0xffff00, \
	53	.vendor = 0x8086, \
	54	.device = id, \
	55	.subvendor = PCI_ANY_ID, \
	56	.subdevice = PCI_ANY_ID, \
	57	.driver_data = 0 }
	58
1da177e4	59	static struct pci_device_id pciidlist[] = {
49ae35f2 KH	60	INTEL_VGA_DEVICE(0x3577),
	61	INTEL_VGA_DEVICE(0x2562),
	62	INTEL_VGA_DEVICE(0x3582),
	63	INTEL_VGA_DEVICE(0x2572),
	64	INTEL_VGA_DEVICE(0x2582),
	65	INTEL_VGA_DEVICE(0x258a),
	66	INTEL_VGA_DEVICE(0x2592),
	67	INTEL_VGA_DEVICE(0x2772),
	68	INTEL_VGA_DEVICE(0x27a2),
	69	INTEL_VGA_DEVICE(0x27ae),
	70	INTEL_VGA_DEVICE(0x2972),
	71	INTEL_VGA_DEVICE(0x2982),
	72	INTEL_VGA_DEVICE(0x2992),
	73	INTEL_VGA_DEVICE(0x29a2),
	74	INTEL_VGA_DEVICE(0x29b2),
	75	INTEL_VGA_DEVICE(0x29c2),
	76	INTEL_VGA_DEVICE(0x29d2),
	77	INTEL_VGA_DEVICE(0x2a02),
	78	INTEL_VGA_DEVICE(0x2a12),
	79	INTEL_VGA_DEVICE(0x2a42),
	80	INTEL_VGA_DEVICE(0x2e02),
	81	INTEL_VGA_DEVICE(0x2e12),
	82	INTEL_VGA_DEVICE(0x2e22),
	83	INTEL_VGA_DEVICE(0x2e32),
	84	INTEL_VGA_DEVICE(0x2e42),
	85	INTEL_VGA_DEVICE(0xa001),
	86	INTEL_VGA_DEVICE(0xa011),
	87	INTEL_VGA_DEVICE(0x35e8),
	88	INTEL_VGA_DEVICE(0x0042),
	89	INTEL_VGA_DEVICE(0x0046),
	90	{0, 0, 0}
1da177e4 LT	91	};
1da177e4 LT	92
79e53945 JB	93	#if defined(CONFIG_DRM_I915_KMS)
	94	MODULE_DEVICE_TABLE(pci, pciidlist);
	95	#endif
	96
b932ccb5	97	static int i915_suspend(struct drm_device *dev, pm_message_t state)
ba8bbcf6 JB	98	{
ba8bbcf6 JB	99	struct drm_i915_private *dev_priv = dev->dev_private;
ba8bbcf6 JB	100
ba8bbcf6 JB	101	if (!dev \|\| !dev_priv) {
1ae8c0a5 KP	102	DRM_ERROR("dev: %p, dev_priv: %p\n", dev, dev_priv);
1ae8c0a5 KP	103	DRM_ERROR("DRM not initialized, aborting suspend.\n");
ba8bbcf6 JB	104	return -ENODEV;
	105	}
	106
b932ccb5 DA	107	if (state.event == PM_EVENT_PRETHAW)
	108	return 0;
	109
ba8bbcf6	110	pci_save_state(dev->pdev);
ba8bbcf6	111
5669fcac	112	/* If KMS is active, we do the leavevt stuff here */
226485e9 JB	113	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	114	if (i915_gem_idle(dev))
	115	dev_err(&dev->pdev->dev,
	116	"GEM idle failed, resume may fail\n");
	117	drm_irq_uninstall(dev);
5669fcac JB	118	}
5669fcac JB	119
9e06dd39 JB	120	i915_save_state(dev);
9e06dd39 JB	121
3b1c1c11	122	intel_opregion_free(dev, 1);
8ee1c3db	123
b932ccb5 DA	124	if (state.event == PM_EVENT_SUSPEND) {
	125	/* Shut down the device */
	126	pci_disable_device(dev->pdev);
	127	pci_set_power_state(dev->pdev, PCI_D3hot);
	128	}
ba8bbcf6	129
c9354c85 LT	130	/* Modeset on resume, not lid events */
c9354c85 LT	131	dev_priv->modeset_on_lid = 0;
06891e27	132
ba8bbcf6 JB	133	return 0;
	134	}
	135
	136	static int i915_resume(struct drm_device *dev)
	137	{
5669fcac JB	138	struct drm_i915_private *dev_priv = dev->dev_private;
	139	int ret = 0;
	140
ba8bbcf6 JB	141	if (pci_enable_device(dev->pdev))
ba8bbcf6 JB	142	return -1;
ea7b44c8	143	pci_set_master(dev->pdev);
ba8bbcf6	144
317c35d1	145	i915_restore_state(dev);
ba8bbcf6	146
74a365b3	147	intel_opregion_init(dev, 1);
8ee1c3db	148
5669fcac JB	149	/* KMS EnterVT equivalent */
	150	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	151	mutex_lock(&dev->struct_mutex);
	152	dev_priv->mm.suspended = 0;
	153
	154	ret = i915_gem_init_ringbuffer(dev);
	155	if (ret != 0)
	156	ret = -1;
	157	mutex_unlock(&dev->struct_mutex);
226485e9 JB	158
226485e9 JB	159	drm_irq_install(dev);
5669fcac	160	}
354ff967 ZY	161	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
	162	/* Resume the modeset for every activated CRTC */
	163	drm_helper_resume_force_mode(dev);
	164	}
5669fcac	165
c9354c85	166	dev_priv->modeset_on_lid = 0;
06891e27	167
5669fcac	168	return ret;
ba8bbcf6 JB	169	}
ba8bbcf6 JB	170
11ed50ec BG	171	/**
	172	* i965_reset - reset chip after a hang
	173	* @dev: drm device to reset
	174	* @flags: reset domains
	175	*
	176	* Reset the chip. Useful if a hang is detected. Returns zero on successful
	177	* reset or otherwise an error code.
	178	*
	179	* Procedure is fairly simple:
	180	* - reset the chip using the reset reg
	181	* - re-init context state
	182	* - re-init hardware status page
	183	* - re-init ring buffer
	184	* - re-init interrupt state
	185	* - re-init display
	186	*/
	187	int i965_reset(struct drm_device *dev, u8 flags)
	188	{
	189	drm_i915_private_t *dev_priv = dev->dev_private;
	190	unsigned long timeout;
	191	u8 gdrst;
	192	/*
	193	* We really should only reset the display subsystem if we actually
	194	* need to
	195	*/
	196	bool need_display = true;
	197
	198	mutex_lock(&dev->struct_mutex);
	199
	200	/*
	201	* Clear request list
	202	*/
	203	i915_gem_retire_requests(dev);
	204
	205	if (need_display)
	206	i915_save_display(dev);
	207
	208	if (IS_I965G(dev) \|\| IS_G4X(dev)) {
	209	/*
	210	* Set the domains we want to reset, then the reset bit (bit 0).
	211	* Clear the reset bit after a while and wait for hardware status
	212	* bit (bit 1) to be set
	213	*/
	214	pci_read_config_byte(dev->pdev, GDRST, &gdrst);
	215	pci_write_config_byte(dev->pdev, GDRST, gdrst \| flags \| ((flags == GDRST_FULL) ? 0x1 : 0x0));
	216	udelay(50);
	217	pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);
	218
	219	/* ...we don't want to loop forever though, 500ms should be plenty */
	220	timeout = jiffies + msecs_to_jiffies(500);
	221	do {
	222	udelay(100);
	223	pci_read_config_byte(dev->pdev, GDRST, &gdrst);
	224	} while ((gdrst & 0x1) && time_after(timeout, jiffies));
	225
	226	if (gdrst & 0x1) {
	227	WARN(true, "i915: Failed to reset chip\n");
	228	mutex_unlock(&dev->struct_mutex);
	229	return -EIO;
	230	}
	231	} else {
	232	DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
	233	return -ENODEV;
	234	}
235
236	/* Ok, now get things going again... */
237
238	/*
239	* Everything depends on having the GTT running, so we need to start
240	* there. Fortunately we don't need to do this unless we reset the
241	* chip at a PCI level.
242	*
243	* Next we need to restore the context, but we don't use those
244	* yet either...
245	*
246	* Ring buffer needs to be re-initialized in the KMS case, or if X
247	* was running at the time of the reset (i.e. we weren't VT
248	* switched away).
249	*/
250	if (drm_core_check_feature(dev, DRIVER_MODESET) \|\|
251	!dev_priv->mm.suspended) {
252	drm_i915_ring_buffer_t *ring = &dev_priv->ring;
253	struct drm_gem_object *obj = ring->ring_obj;
254	struct drm_i915_gem_object *obj_priv = obj->driver_private;
255	dev_priv->mm.suspended = 0;
256
257	/* Stop the ring if it's running. */
258	I915_WRITE(PRB0_CTL, 0);
259	I915_WRITE(PRB0_TAIL, 0);
260	I915_WRITE(PRB0_HEAD, 0);
261
262	/* Initialize the ring. */
263	I915_WRITE(PRB0_START, obj_priv->gtt_offset);
264	I915_WRITE(PRB0_CTL,
265	((obj->size - 4096) & RING_NR_PAGES) \|
266	RING_NO_REPORT \|
267	RING_VALID);
268	if (!drm_core_check_feature(dev, DRIVER_MODESET))
269	i915_kernel_lost_context(dev);
270	else {
271	ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
272	ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
273	ring->space = ring->head - (ring->tail + 8);
274	if (ring->space < 0)
275	ring->space += ring->Size;
276	}
277
278	mutex_unlock(&dev->struct_mutex);
279	drm_irq_uninstall(dev);
280	drm_irq_install(dev);
281	mutex_lock(&dev->struct_mutex);
282	}
283
284	/*
285	* Display needs restore too...
286	*/
287	if (need_display)
288	i915_restore_display(dev);
289
290	mutex_unlock(&dev->struct_mutex);
291	return 0;
292	}
293
294
112b715e KH	295	static int __devinit
	296	i915_pci_probe(struct pci_dev pdev, const struct pci_device_id ent)
	297	{
	298	return drm_get_dev(pdev, ent, &driver);
	299	}
	300
	301	static void
	302	i915_pci_remove(struct pci_dev *pdev)
	303	{
	304	struct drm_device *dev = pci_get_drvdata(pdev);
	305
	306	drm_put_dev(dev);
	307	}
	308
	309	static int
	310	i915_pci_suspend(struct pci_dev *pdev, pm_message_t state)
	311	{
	312	struct drm_device *dev = pci_get_drvdata(pdev);
	313
	314	return i915_suspend(dev, state);
	315	}
	316
	317	static int
	318	i915_pci_resume(struct pci_dev *pdev)
	319	{
	320	struct drm_device *dev = pci_get_drvdata(pdev);
	321
	322	return i915_resume(dev);
	323	}
	324
cbda12d7 ZW	325	static int
	326	i915_pm_suspend(struct device *dev)
	327	{
	328	return i915_pci_suspend(to_pci_dev(dev), PMSG_SUSPEND);
	329	}
	330
	331	static int
	332	i915_pm_resume(struct device *dev)
	333	{
	334	return i915_pci_resume(to_pci_dev(dev));
	335	}
	336
	337	static int
	338	i915_pm_freeze(struct device *dev)
	339	{
	340	return i915_pci_suspend(to_pci_dev(dev), PMSG_FREEZE);
	341	}
	342
	343	static int
	344	i915_pm_thaw(struct device *dev)
	345	{
	346	/* thaw during hibernate, do nothing! */
	347	return 0;
	348	}
	349
	350	static int
	351	i915_pm_poweroff(struct device *dev)
	352	{
	353	return i915_pci_suspend(to_pci_dev(dev), PMSG_HIBERNATE);
	354	}
	355
	356	static int
	357	i915_pm_restore(struct device *dev)
	358	{
	359	return i915_pci_resume(to_pci_dev(dev));
	360	}
	361
	362	const struct dev_pm_ops i915_pm_ops = {
	363	.suspend = i915_pm_suspend,
	364	.resume = i915_pm_resume,
	365	.freeze = i915_pm_freeze,
	366	.thaw = i915_pm_thaw,
	367	.poweroff = i915_pm_poweroff,
	368	.restore = i915_pm_restore,
	369	};
	370
de151cf6 JB	371	static struct vm_operations_struct i915_gem_vm_ops = {
de151cf6 JB	372	.fault = i915_gem_fault,
ab00b3e5 JB	373	.open = drm_gem_vm_open,
ab00b3e5 JB	374	.close = drm_gem_vm_close,
de151cf6 JB	375	};
de151cf6 JB	376
1da177e4	377	static struct drm_driver driver = {
792d2b9a DA	378	/* don't use mtrr's here, the Xserver or user space app should
	379	* deal with them for intel hardware.
	380	*/
673a394b EA	381	.driver_features =
	382	DRIVER_USE_AGP \| DRIVER_REQUIRE_AGP \| /* DRIVER_USE_MTRR \|*/
	383	DRIVER_HAVE_IRQ \| DRIVER_IRQ_SHARED \| DRIVER_GEM,
22eae947	384	.load = i915_driver_load,
ba8bbcf6	385	.unload = i915_driver_unload,
673a394b	386	.open = i915_driver_open,
22eae947 DA	387	.lastclose = i915_driver_lastclose,
22eae947 DA	388	.preclose = i915_driver_preclose,
673a394b	389	.postclose = i915_driver_postclose,
cda17380	390	.device_is_agp = i915_driver_device_is_agp,
0a3e67a4 JB	391	.enable_vblank = i915_enable_vblank,
0a3e67a4 JB	392	.disable_vblank = i915_disable_vblank,
1da177e4 LT	393	.irq_preinstall = i915_driver_irq_preinstall,
	394	.irq_postinstall = i915_driver_irq_postinstall,
	395	.irq_uninstall = i915_driver_irq_uninstall,
	396	.irq_handler = i915_driver_irq_handler,
	397	.reclaim_buffers = drm_core_reclaim_buffers,
	398	.get_map_ofs = drm_core_get_map_ofs,
	399	.get_reg_ofs = drm_core_get_reg_ofs,
7c1c2871 DA	400	.master_create = i915_master_create,
7c1c2871 DA	401	.master_destroy = i915_master_destroy,
955b12de	402	#if defined(CONFIG_DEBUG_FS)
27c202ad BG	403	.debugfs_init = i915_debugfs_init,
27c202ad BG	404	.debugfs_cleanup = i915_debugfs_cleanup,
955b12de	405	#endif
673a394b EA	406	.gem_init_object = i915_gem_init_object,
673a394b EA	407	.gem_free_object = i915_gem_free_object,
de151cf6	408	.gem_vm_ops = &i915_gem_vm_ops,
1da177e4 LT	409	.ioctls = i915_ioctls,
1da177e4 LT	410	.fops = {
b5e89ed5 DA	411	.owner = THIS_MODULE,
	412	.open = drm_open,
	413	.release = drm_release,
	414	.ioctl = drm_ioctl,
de151cf6	415	.mmap = drm_gem_mmap,
b5e89ed5 DA	416	.poll = drm_poll,
b5e89ed5 DA	417	.fasync = drm_fasync,
c9a9c5e0	418	.read = drm_read,
8ca7c1df	419	#ifdef CONFIG_COMPAT
b5e89ed5	420	.compat_ioctl = i915_compat_ioctl,
8ca7c1df	421	#endif
22eae947 DA	422	},
22eae947 DA	423
1da177e4	424	.pci_driver = {
22eae947 DA	425	.name = DRIVER_NAME,
22eae947 DA	426	.id_table = pciidlist,
112b715e KH	427	.probe = i915_pci_probe,
112b715e KH	428	.remove = i915_pci_remove,
cbda12d7	429	.driver.pm = &i915_pm_ops,
22eae947	430	},
bc5f4523	431
22eae947 DA	432	.name = DRIVER_NAME,
	433	.desc = DRIVER_DESC,
	434	.date = DRIVER_DATE,
	435	.major = DRIVER_MAJOR,
	436	.minor = DRIVER_MINOR,
	437	.patchlevel = DRIVER_PATCHLEVEL,
1da177e4 LT	438	};
	439
	440	static int __init i915_init(void)
	441	{
	442	driver.num_ioctls = i915_max_ioctl;
79e53945	443
31169714 CW	444	i915_gem_shrinker_init();
31169714 CW	445
79e53945 JB	446	/*
	447	* If CONFIG_DRM_I915_KMS is set, default to KMS unless
	448	* explicitly disabled with the module pararmeter.
	449	*
	450	* Otherwise, just follow the parameter (defaulting to off).
	451	*
	452	* Allow optional vga_text_mode_force boot option to override
	453	* the default behavior.
	454	*/
	455	#if defined(CONFIG_DRM_I915_KMS)
	456	if (i915_modeset != 0)
	457	driver.driver_features \|= DRIVER_MODESET;
	458	#endif
	459	if (i915_modeset == 1)
	460	driver.driver_features \|= DRIVER_MODESET;
	461
	462	#ifdef CONFIG_VGA_CONSOLE
	463	if (vgacon_text_force() && i915_modeset == -1)
	464	driver.driver_features &= ~DRIVER_MODESET;
	465	#endif
	466
1da177e4 LT	467	return drm_init(&driver);
	468	}
	469
	470	static void __exit i915_exit(void)
	471	{
31169714	472	i915_gem_shrinker_exit();
1da177e4 LT	473	drm_exit(&driver);
	474	}
	475
	476	module_init(i915_init);
	477	module_exit(i915_exit);
	478
b5e89ed5 DA	479	MODULE_AUTHOR(DRIVER_AUTHOR);
b5e89ed5 DA	480	MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4	481	MODULE_LICENSE("GPL and additional rights");