Merge branch 'drm-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

* 'drm-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/i915: save and restore dsparb and d_state registers.
  drm/i915: fix off by one in VGA save/restore of AR & CR regs.
  drm: disable tasklets not IRQs when taking the drm lock spinlock
  Revert "drm/vbl rework: rework how the drm deals with vblank."

22 files changed, 513 insertions, 1403 deletions

diff --git a/drivers/char/drm/drm.h b/drivers/char/drm/drm.h
index 6874f31ca8c..3a05c6d5ebe 100644
--- a/drivers/char/drm/drm.h
+++ b/drivers/char/drm/drm.h
@@ -471,7 +471,6 @@ struct drm_irq_busid {
 enum drm_vblank_seq_type {
 	_DRM_VBLANK_ABSOLUTE = 0x0,	/**< Wait for specific vblank sequence number */
 	_DRM_VBLANK_RELATIVE = 0x1,	/**< Wait for given number of vblanks */
-	_DRM_VBLANK_FLIP = 0x8000000,	/**< Scheduled buffer swap should flip */
 	_DRM_VBLANK_NEXTONMISS = 0x10000000,	/**< If missed, wait for next vblank */
 	_DRM_VBLANK_SECONDARY = 0x20000000,	/**< Secondary display controller */
 	_DRM_VBLANK_SIGNAL = 0x40000000	/**< Send signal instead of blocking */
@@ -504,21 +503,6 @@ union drm_wait_vblank {
 	struct drm_wait_vblank_reply reply;
 };
 
-enum drm_modeset_ctl_cmd {
-	_DRM_PRE_MODESET = 1,
-	_DRM_POST_MODESET = 2,
-};
-
-/**
- * DRM_IOCTL_MODESET_CTL ioctl argument type
- *
- * \sa drmModesetCtl().
- */
-struct drm_modeset_ctl {
-	unsigned long arg;
-	enum drm_modeset_ctl_cmd cmd;
-};
-
 /**
  * DRM_IOCTL_AGP_ENABLE ioctl argument type.
  *
@@ -603,7 +587,6 @@ struct drm_set_version {
 #define DRM_IOCTL_GET_CLIENT            DRM_IOWR(0x05, struct drm_client)
 #define DRM_IOCTL_GET_STATS             DRM_IOR( 0x06, struct drm_stats)
 #define DRM_IOCTL_SET_VERSION		DRM_IOWR(0x07, struct drm_set_version)
-#define DRM_IOCTL_MODESET_CTL           DRM_IOW(0x08, struct drm_modeset_ctl)
 
 #define DRM_IOCTL_SET_UNIQUE		DRM_IOW( 0x10, struct drm_unique)
 #define DRM_IOCTL_AUTH_MAGIC		DRM_IOW( 0x11, struct drm_auth)
diff --git a/drivers/char/drm/drmP.h b/drivers/char/drm/drmP.h
index 213b3ca3468..0764b662b33 100644
--- a/drivers/char/drm/drmP.h
+++ b/drivers/char/drm/drmP.h
@@ -100,8 +100,10 @@ struct drm_device;
 #define DRIVER_HAVE_DMA    0x20
 #define DRIVER_HAVE_IRQ    0x40
 #define DRIVER_IRQ_SHARED  0x80
+#define DRIVER_IRQ_VBL     0x100
 #define DRIVER_DMA_QUEUE   0x200
 #define DRIVER_FB_DMA      0x400
+#define DRIVER_IRQ_VBL2    0x800
 
 /***********************************************************************/
 /** \name Begin the DRM... */
@@ -577,52 +579,10 @@ struct drm_driver {
 	int (*context_dtor) (struct drm_device *dev, int context);
 	int (*kernel_context_switch) (struct drm_device *dev, int old,
 				      int new);
-	void (*kernel_context_switch_unlock) (struct drm_device * dev);
-	/**
-	 * get_vblank_counter - get raw hardware vblank counter
-	 * @dev: DRM device
-	 * @crtc: counter to fetch
-	 *
-	 * Driver callback for fetching a raw hardware vblank counter
-	 * for @crtc.  If a device doesn't have a hardware counter, the
-	 * driver can simply return the value of drm_vblank_count and
-	 * make the enable_vblank() and disable_vblank() hooks into no-ops,
-	 * leaving interrupts enabled at all times.
-	 *
-	 * Wraparound handling and loss of events due to modesetting is dealt
-	 * with in the DRM core code.
-	 *
-	 * RETURNS
-	 * Raw vblank counter value.
-	 */
-	u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
-
-	/**
-	 * enable_vblank - enable vblank interrupt events
-	 * @dev: DRM device
-	 * @crtc: which irq to enable
-	 *
-	 * Enable vblank interrupts for @crtc.  If the device doesn't have
-	 * a hardware vblank counter, this routine should be a no-op, since
-	 * interrupts will have to stay on to keep the count accurate.
-	 *
-	 * RETURNS
-	 * Zero on success, appropriate errno if the given @crtc's vblank
-	 * interrupt cannot be enabled.
-	 */
-	int (*enable_vblank) (struct drm_device *dev, int crtc);
-
-	/**
-	 * disable_vblank - disable vblank interrupt events
-	 * @dev: DRM device
-	 * @crtc: which irq to enable
-	 *
-	 * Disable vblank interrupts for @crtc.  If the device doesn't have
-	 * a hardware vblank counter, this routine should be a no-op, since
-	 * interrupts will have to stay on to keep the count accurate.
-	 */
-	void (*disable_vblank) (struct drm_device *dev, int crtc);
-	int (*dri_library_name) (struct drm_device *dev, char * buf);
+	void (*kernel_context_switch_unlock) (struct drm_device *dev);
+	int (*vblank_wait) (struct drm_device *dev, unsigned int *sequence);
+	int (*vblank_wait2) (struct drm_device *dev, unsigned int *sequence);
+	int (*dri_library_name) (struct drm_device *dev, char *buf);
 
 	/**
 	 * Called by \c drm_device_is_agp.  Typically used to determine if a
@@ -641,7 +601,7 @@ struct drm_driver {
 
 	irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
 	void (*irq_preinstall) (struct drm_device *dev);
-	int (*irq_postinstall) (struct drm_device *dev);
+	void (*irq_postinstall) (struct drm_device *dev);
 	void (*irq_uninstall) (struct drm_device *dev);
 	void (*reclaim_buffers) (struct drm_device *dev,
 				 struct drm_file * file_priv);
@@ -770,21 +730,13 @@ struct drm_device {
 	/** \name VBLANK IRQ support */
 	/*@{ */
 
-	wait_queue_head_t *vbl_queue;	/**< VBLANK wait queue */
-	atomic_t *_vblank_count;	/**< number of VBLANK interrupts (driver must alloc the right number of counters) */
+	wait_queue_head_t vbl_queue;	/**< VBLANK wait queue */
+	atomic_t vbl_received;
+	atomic_t vbl_received2;		/**< number of secondary VBLANK interrupts */
 	spinlock_t vbl_lock;
-	struct list_head *vbl_sigs;		/**< signal list to send on VBLANK */
-	atomic_t vbl_signal_pending;	/* number of signals pending on all crtcs*/
-	atomic_t *vblank_refcount;	/* number of users of vblank interrupts per crtc */
-	u32 *last_vblank;		/* protected by dev->vbl_lock, used */
-					/* for wraparound handling */
-	u32 *vblank_offset;		/* used to track how many vblanks */
-	int *vblank_enabled;		/* so we don't call enable more than
-					   once per disable */
-	u32 *vblank_premodeset;		/*  were lost during modeset */
-	struct timer_list vblank_disable_timer;
-
-	unsigned long max_vblank_count; /**< size of vblank counter register */
+	struct list_head vbl_sigs;		/**< signal list to send on VBLANK */
+	struct list_head vbl_sigs2;	/**< signals to send on secondary VBLANK */
+	unsigned int vbl_pending;
 	spinlock_t tasklet_lock;	/**< For drm_locked_tasklet */
 	void (*locked_tasklet_func)(struct drm_device *dev);
 
@@ -804,7 +756,6 @@ struct drm_device {
 #ifdef __alpha__
 	struct pci_controller *hose;
 #endif
-	int num_crtcs;			/**< Number of CRTCs on this device */
 	struct drm_sg_mem *sg;	/**< Scatter gather memory */
 	void *dev_private;		/**< device private data */
 	struct drm_sigdata sigdata;	   /**< For block_all_signals */
@@ -1039,19 +990,11 @@ extern void drm_driver_irq_preinstall(struct drm_device *dev);
 extern void drm_driver_irq_postinstall(struct drm_device *dev);
 extern void drm_driver_irq_uninstall(struct drm_device *dev);
 
-extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
-extern int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *filp);
-extern int drm_vblank_wait(struct drm_device * dev, unsigned int *vbl_seq);
-extern void drm_locked_tasklet(struct drm_device *dev, void(*func)(struct drm_device*));
-extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
-extern void drm_update_vblank_count(struct drm_device *dev, int crtc);
-extern void drm_handle_vblank(struct drm_device *dev, int crtc);
-extern int drm_vblank_get(struct drm_device *dev, int crtc);
-extern void drm_vblank_put(struct drm_device *dev, int crtc);
-
-				/* Modesetting support */
-extern int drm_modeset_ctl(struct drm_device *dev, void *data,
+extern int drm_wait_vblank(struct drm_device *dev, void *data,
 			   struct drm_file *file_priv);
+extern int drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
+extern void drm_vbl_send_signals(struct drm_device *dev);
+extern void drm_locked_tasklet(struct drm_device *dev, void(*func)(struct drm_device*));
 
 				/* AGP/GART support (drm_agpsupport.h) */
 extern struct drm_agp_head *drm_agp_init(struct drm_device *dev);
diff --git a/drivers/char/drm/drm_fops.c b/drivers/char/drm/drm_fops.c
index 68f0da801ed..d2e6da85f58 100644
--- a/drivers/char/drm/drm_fops.c
+++ b/drivers/char/drm/drm_fops.c
@@ -323,7 +323,6 @@ int drm_release(struct inode *inode, struct file *filp)
 	struct drm_file *file_priv = filp->private_data;
 	struct drm_device *dev = file_priv->minor->dev;
 	int retcode = 0;
-	unsigned long irqflags;
 
 	lock_kernel();
 
@@ -355,11 +354,9 @@ int drm_release(struct inode *inode, struct file *filp)
 			 */
 
 			do{
-				spin_lock_irqsave(&dev->lock.spinlock,
-						  irqflags);
+				spin_lock_bh(&dev->lock.spinlock);
 				locked = dev->lock.idle_has_lock;
-				spin_unlock_irqrestore(&dev->lock.spinlock,
-						       irqflags);
+				spin_unlock_bh(&dev->lock.spinlock);
 				if (locked)
 					break;
 				schedule();
diff --git a/drivers/char/drm/drm_irq.c b/drivers/char/drm/drm_irq.c
index 286f9d61e7d..089c015c01d 100644
--- a/drivers/char/drm/drm_irq.c
+++ b/drivers/char/drm/drm_irq.c
@@ -71,117 +71,6 @@ int drm_irq_by_busid(struct drm_device *dev, void *data,
 	return 0;
 }
 
-static void vblank_disable_fn(unsigned long arg)
-{
-	struct drm_device *dev = (struct drm_device *)arg;
-	unsigned long irqflags;
-	int i;
-
-	for (i = 0; i < dev->num_crtcs; i++) {
-		spin_lock_irqsave(&dev->vbl_lock, irqflags);
-		if (atomic_read(&dev->vblank_refcount[i]) == 0 &&
-		    dev->vblank_enabled[i]) {
-			dev->driver->disable_vblank(dev, i);
-			dev->vblank_enabled[i] = 0;
-		}
-		spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
-	}
-}
-
-static void drm_vblank_cleanup(struct drm_device *dev)
-{
-	/* Bail if the driver didn't call drm_vblank_init() */
-	if (dev->num_crtcs == 0)
-		return;
-
-	del_timer(&dev->vblank_disable_timer);
-
-	vblank_disable_fn((unsigned long)dev);
-
-	drm_free(dev->vbl_queue, sizeof(*dev->vbl_queue) * dev->num_crtcs,
-		 DRM_MEM_DRIVER);
-	drm_free(dev->vbl_sigs, sizeof(*dev->vbl_sigs) * dev->num_crtcs,
-		 DRM_MEM_DRIVER);
-	drm_free(dev->_vblank_count, sizeof(*dev->_vblank_count) *
-		 dev->num_crtcs, DRM_MEM_DRIVER);
-	drm_free(dev->vblank_refcount, sizeof(*dev->vblank_refcount) *
-		 dev->num_crtcs, DRM_MEM_DRIVER);
-	drm_free(dev->vblank_enabled, sizeof(*dev->vblank_enabled) *
-		 dev->num_crtcs, DRM_MEM_DRIVER);
-	drm_free(dev->last_vblank, sizeof(*dev->last_vblank) * dev->num_crtcs,
-		 DRM_MEM_DRIVER);
-	drm_free(dev->vblank_premodeset, sizeof(*dev->vblank_premodeset) *
-		 dev->num_crtcs, DRM_MEM_DRIVER);
-	drm_free(dev->vblank_offset, sizeof(*dev->vblank_offset) * dev->num_crtcs,
-		 DRM_MEM_DRIVER);
-
-	dev->num_crtcs = 0;
-}
-
-int drm_vblank_init(struct drm_device *dev, int num_crtcs)
-{
-	int i, ret = -ENOMEM;
-
-	setup_timer(&dev->vblank_disable_timer, vblank_disable_fn,
-		    (unsigned long)dev);
-	spin_lock_init(&dev->vbl_lock);
-	atomic_set(&dev->vbl_signal_pending, 0);
-	dev->num_crtcs = num_crtcs;
-
-	dev->vbl_queue = drm_alloc(sizeof(wait_queue_head_t) * num_crtcs,
-				   DRM_MEM_DRIVER);
-	if (!dev->vbl_queue)
-		goto err;
-
-	dev->vbl_sigs = drm_alloc(sizeof(struct list_head) * num_crtcs,
-				  DRM_MEM_DRIVER);
-	if (!dev->vbl_sigs)
-		goto err;
-
-	dev->_vblank_count = drm_alloc(sizeof(atomic_t) * num_crtcs,
-				      DRM_MEM_DRIVER);
-	if (!dev->_vblank_count)
-		goto err;
-
-	dev->vblank_refcount = drm_alloc(sizeof(atomic_t) * num_crtcs,
-					 DRM_MEM_DRIVER);
-	if (!dev->vblank_refcount)
-		goto err;
-
-	dev->vblank_enabled = drm_calloc(num_crtcs, sizeof(int),
-					 DRM_MEM_DRIVER);
-	if (!dev->vblank_enabled)
-		goto err;
-
-	dev->last_vblank = drm_calloc(num_crtcs, sizeof(u32), DRM_MEM_DRIVER);
-	if (!dev->last_vblank)
-		goto err;
-
-	dev->vblank_premodeset = drm_calloc(num_crtcs, sizeof(u32),
-					    DRM_MEM_DRIVER);
-	if (!dev->vblank_premodeset)
-		goto err;
-
-	dev->vblank_offset = drm_calloc(num_crtcs, sizeof(u32), DRM_MEM_DRIVER);
-	if (!dev->vblank_offset)
-		goto err;
-
-	/* Zero per-crtc vblank stuff */
-	for (i = 0; i < num_crtcs; i++) {
-		init_waitqueue_head(&dev->vbl_queue[i]);
-		INIT_LIST_HEAD(&dev->vbl_sigs[i]);
-		atomic_set(&dev->_vblank_count[i], 0);
-		atomic_set(&dev->vblank_refcount[i], 0);
-	}
-
-	return 0;
-
-err:
-	drm_vblank_cleanup(dev);
-	return ret;
-}
-EXPORT_SYMBOL(drm_vblank_init);
-
 /**
  * Install IRQ handler.
  *
@@ -220,6 +109,17 @@ static int drm_irq_install(struct drm_device * dev)
 
 	DRM_DEBUG("irq=%d\n", dev->irq);
 
+	if (drm_core_check_feature(dev, DRIVER_IRQ_VBL)) {
+		init_waitqueue_head(&dev->vbl_queue);
+
+		spin_lock_init(&dev->vbl_lock);
+
+		INIT_LIST_HEAD(&dev->vbl_sigs);
+		INIT_LIST_HEAD(&dev->vbl_sigs2);
+
+		dev->vbl_pending = 0;
+	}
+
 	/* Before installing handler */
 	dev->driver->irq_preinstall(dev);
 
@@ -237,14 +137,9 @@ static int drm_irq_install(struct drm_device * dev)
 	}
 
 	/* After installing handler */
-	ret = dev->driver->irq_postinstall(dev);
-	if (ret < 0) {
-		mutex_lock(&dev->struct_mutex);
-		dev->irq_enabled = 0;
-		mutex_unlock(&dev->struct_mutex);
-	}
+	dev->driver->irq_postinstall(dev);
 
-	return ret;
+	return 0;
 }
 
 /**
@@ -275,8 +170,6 @@ int drm_irq_uninstall(struct drm_device * dev)
 
 	free_irq(dev->irq, dev);
 
-	drm_vblank_cleanup(dev);
-
 	dev->locked_tasklet_func = NULL;
 
 	return 0;
@@ -321,148 +214,6 @@ int drm_control(struct drm_device *dev, void *data,
 }
 
 /**
- * drm_vblank_count - retrieve "cooked" vblank counter value
- * @dev: DRM device
- * @crtc: which counter to retrieve
- *
- * Fetches the "cooked" vblank count value that represents the number of
- * vblank events since the system was booted, including lost events due to
- * modesetting activity.
- */
-u32 drm_vblank_count(struct drm_device *dev, int crtc)
-{
-	return atomic_read(&dev->_vblank_count[crtc]) +
-		dev->vblank_offset[crtc];
-}
-EXPORT_SYMBOL(drm_vblank_count);
-
-/**
- * drm_update_vblank_count - update the master vblank counter
- * @dev: DRM device
- * @crtc: counter to update
- *
- * Call back into the driver to update the appropriate vblank counter
- * (specified by @crtc).  Deal with wraparound, if it occurred, and
- * update the last read value so we can deal with wraparound on the next
- * call if necessary.
- */
-void drm_update_vblank_count(struct drm_device *dev, int crtc)
-{
-	unsigned long irqflags;
-	u32 cur_vblank, diff;
-
-	/*
-	 * Interrupts were disabled prior to this call, so deal with counter
-	 * wrap if needed.
-	 * NOTE!  It's possible we lost a full dev->max_vblank_count events
-	 * here if the register is small or we had vblank interrupts off for
-	 * a long time.
-	 */
-	cur_vblank = dev->driver->get_vblank_counter(dev, crtc);
-	spin_lock_irqsave(&dev->vbl_lock, irqflags);
-	if (cur_vblank < dev->last_vblank[crtc]) {
-		diff = dev->max_vblank_count -
-			dev->last_vblank[crtc];
-		diff += cur_vblank;
-	} else {
-		diff = cur_vblank - dev->last_vblank[crtc];
-	}
-	dev->last_vblank[crtc] = cur_vblank;
-	spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
-
-	atomic_add(diff, &dev->_vblank_count[crtc]);
-}
-EXPORT_SYMBOL(drm_update_vblank_count);
-
-/**
- * drm_vblank_get - get a reference count on vblank events
- * @dev: DRM device
- * @crtc: which CRTC to own
- *
- * Acquire a reference count on vblank events to avoid having them disabled
- * while in use.  Note callers will probably want to update the master counter
- * using drm_update_vblank_count() above before calling this routine so that
- * wakeups occur on the right vblank event.
- *
- * RETURNS
- * Zero on success, nonzero on failure.
- */
-int drm_vblank_get(struct drm_device *dev, int crtc)
-{
-	unsigned long irqflags;
-	int ret = 0;
-
-	spin_lock_irqsave(&dev->vbl_lock, irqflags);
-	/* Going from 0->1 means we have to enable interrupts again */
-	if (atomic_add_return(1, &dev->vblank_refcount[crtc]) == 1 &&
-	    !dev->vblank_enabled[crtc]) {
-		ret = dev->driver->enable_vblank(dev, crtc);
-		if (ret)
-			atomic_dec(&dev->vblank_refcount[crtc]);
-		else
-			dev->vblank_enabled[crtc] = 1;
-	}
-	spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
-
-	return ret;
-}
-EXPORT_SYMBOL(drm_vblank_get);
-
-/**
- * drm_vblank_put - give up ownership of vblank events
- * @dev: DRM device
- * @crtc: which counter to give up
- *
- * Release ownership of a given vblank counter, turning off interrupts
- * if possible.
- */
-void drm_vblank_put(struct drm_device *dev, int crtc)
-{
-	/* Last user schedules interrupt disable */
-	if (atomic_dec_and_test(&dev->vblank_refcount[crtc]))
-	    mod_timer(&dev->vblank_disable_timer, jiffies + 5*DRM_HZ);
-}
-EXPORT_SYMBOL(drm_vblank_put);
-
-/**
- * drm_modeset_ctl - handle vblank event counter changes across mode switch
- * @DRM_IOCTL_ARGS: standard ioctl arguments
- *
- * Applications should call the %_DRM_PRE_MODESET and %_DRM_POST_MODESET
- * ioctls around modesetting so that any lost vblank events are accounted for.
- */
-int drm_modeset_ctl(struct drm_device *dev, void *data,
-		    struct drm_file *file_priv)
-{
-	struct drm_modeset_ctl *modeset = data;
-	int crtc, ret = 0;
-	u32 new;
-
-	crtc = modeset->arg;
-	if (crtc >= dev->num_crtcs) {
-		ret = -EINVAL;
-		goto out;
-	}
-
-	switch (modeset->cmd) {
-	case _DRM_PRE_MODESET:
-		dev->vblank_premodeset[crtc] =
-			dev->driver->get_vblank_counter(dev, crtc);
-		break;
-	case _DRM_POST_MODESET:
-		new = dev->driver->get_vblank_counter(dev, crtc);
-		dev->vblank_offset[crtc] = dev->vblank_premodeset[crtc] - new;
-		break;
-	default:
-		ret = -EINVAL;
-		break;
-	}
-
-out:
-	return ret;
-}
-
-/**
  * Wait for VBLANK.
  *
  * \param inode device inode.
@@ -481,13 +232,12 @@ out:
  *
  * If a signal is not requested, then calls vblank_wait().
  */
-int drm_wait_vblank(struct drm_device *dev, void *data,
-		    struct drm_file *file_priv)
+int drm_wait_vblank(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
 	union drm_wait_vblank *vblwait = data;
 	struct timeval now;
 	int ret = 0;
-	unsigned int flags, seq, crtc;
+	unsigned int flags, seq;
 
 	if ((!dev->irq) || (!dev->irq_enabled))
 		return -EINVAL;
@@ -501,13 +251,13 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
 	}
 
 	flags = vblwait->request.type & _DRM_VBLANK_FLAGS_MASK;
-	crtc = flags & _DRM_VBLANK_SECONDARY ? 1 : 0;
 
-	if (crtc >= dev->num_crtcs)
+	if (!drm_core_check_feature(dev, (flags & _DRM_VBLANK_SECONDARY) ?
+				    DRIVER_IRQ_VBL2 : DRIVER_IRQ_VBL))
 		return -EINVAL;
 
-	drm_update_vblank_count(dev, crtc);
-	seq = drm_vblank_count(dev, crtc);
+	seq = atomic_read((flags & _DRM_VBLANK_SECONDARY) ? &dev->vbl_received2
+			  : &dev->vbl_received);
 
 	switch (vblwait->request.type & _DRM_VBLANK_TYPES_MASK) {
 	case _DRM_VBLANK_RELATIVE:
@@ -526,7 +276,8 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
 
 	if (flags & _DRM_VBLANK_SIGNAL) {
 		unsigned long irqflags;
-		struct list_head *vbl_sigs = &dev->vbl_sigs[crtc];
+		struct list_head *vbl_sigs = (flags & _DRM_VBLANK_SECONDARY)
+				      ? &dev->vbl_sigs2 : &dev->vbl_sigs;
 		struct drm_vbl_sig *vbl_sig;
 
 		spin_lock_irqsave(&dev->vbl_lock, irqflags);
@@ -547,26 +298,22 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
 			}
 		}
 
-		if (atomic_read(&dev->vbl_signal_pending) >= 100) {
+		if (dev->vbl_pending >= 100) {
 			spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
 			return -EBUSY;
 		}
 
+		dev->vbl_pending++;
+
 		spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
 
-		vbl_sig = drm_calloc(1, sizeof(struct drm_vbl_sig),
-				     DRM_MEM_DRIVER);
-		if (!vbl_sig)
+		if (!
+		    (vbl_sig =
+		     drm_alloc(sizeof(struct drm_vbl_sig), DRM_MEM_DRIVER))) {
 			return -ENOMEM;
-
-		ret = drm_vblank_get(dev, crtc);
-		if (ret) {
-			drm_free(vbl_sig, sizeof(struct drm_vbl_sig),
-				 DRM_MEM_DRIVER);
-			return ret;
 		}
 
-		atomic_inc(&dev->vbl_signal_pending);
+		memset((void *)vbl_sig, 0, sizeof(*vbl_sig));
 
 		vbl_sig->sequence = vblwait->request.sequence;
 		vbl_sig->info.si_signo = vblwait->request.signal;
@@ -580,20 +327,17 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
 
 		vblwait->reply.sequence = seq;
 	} else {
-		unsigned long cur_vblank;
-
-		ret = drm_vblank_get(dev, crtc);
-		if (ret)
-			return ret;
-		DRM_WAIT_ON(ret, dev->vbl_queue[crtc], 3 * DRM_HZ,
-			    (((cur_vblank = drm_vblank_count(dev, crtc))
-			      - vblwait->request.sequence) <= (1 << 23)));
-		drm_vblank_put(dev, crtc);
-		do_gettimeofday(&now);
+		if (flags & _DRM_VBLANK_SECONDARY) {
+			if (dev->driver->vblank_wait2)
+				ret = dev->driver->vblank_wait2(dev, &vblwait->request.sequence);
+		} else if (dev->driver->vblank_wait)
+			ret =
+			    dev->driver->vblank_wait(dev,
+						     &vblwait->request.sequence);
 
+		do_gettimeofday(&now);
 		vblwait->reply.tval_sec = now.tv_sec;
 		vblwait->reply.tval_usec = now.tv_usec;
-		vblwait->reply.sequence = cur_vblank;
 	}
 
       done:
@@ -604,57 +348,44 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
  * Send the VBLANK signals.
  *
  * \param dev DRM device.
- * \param crtc CRTC where the vblank event occurred
  *
  * Sends a signal for each task in drm_device::vbl_sigs and empties the list.
  *
  * If a signal is not requested, then calls vblank_wait().
  */
-static void drm_vbl_send_signals(struct drm_device * dev, int crtc)
+void drm_vbl_send_signals(struct drm_device * dev)
 {
-	struct drm_vbl_sig *vbl_sig, *tmp;
-	struct list_head *vbl_sigs;
-	unsigned int vbl_seq;
 	unsigned long flags;
+	int i;
 
 	spin_lock_irqsave(&dev->vbl_lock, flags);
 
-	vbl_sigs = &dev->vbl_sigs[crtc];
-	vbl_seq = drm_vblank_count(dev, crtc);
+	for (i = 0; i < 2; i++) {
+		struct drm_vbl_sig *vbl_sig, *tmp;
+		struct list_head *vbl_sigs = i ? &dev->vbl_sigs2 : &dev->vbl_sigs;
+		unsigned int vbl_seq = atomic_read(i ? &dev->vbl_received2 :
+						   &dev->vbl_received);
 
-	list_for_each_entry_safe(vbl_sig, tmp, vbl_sigs, head) {
-	    if ((vbl_seq - vbl_sig->sequence) <= (1 << 23)) {
-		vbl_sig->info.si_code = vbl_seq;
-		send_sig_info(vbl_sig->info.si_signo,
-			      &vbl_sig->info, vbl_sig->task);
+		list_for_each_entry_safe(vbl_sig, tmp, vbl_sigs, head) {
+			if ((vbl_seq - vbl_sig->sequence) <= (1 << 23)) {
+				vbl_sig->info.si_code = vbl_seq;
+				send_sig_info(vbl_sig->info.si_signo,
+					      &vbl_sig->info, vbl_sig->task);
 
-		list_del(&vbl_sig->head);
+				list_del(&vbl_sig->head);
 
-		drm_free(vbl_sig, sizeof(*vbl_sig),
-			 DRM_MEM_DRIVER);
-		atomic_dec(&dev->vbl_signal_pending);
-		drm_vblank_put(dev, crtc);
-	    }
+				drm_free(vbl_sig, sizeof(*vbl_sig),
+					 DRM_MEM_DRIVER);
+
+				dev->vbl_pending--;
+			}
+		}
 	}
 
 	spin_unlock_irqrestore(&dev->vbl_lock, flags);
 }
 
-/**
- * drm_handle_vblank - handle a vblank event
- * @dev: DRM device
- * @crtc: where this event occurred
- *
- * Drivers should call this routine in their vblank interrupt handlers to
- * update the vblank counter and send any signals that may be pending.
- */
-void drm_handle_vblank(struct drm_device *dev, int crtc)
-{
-	drm_update_vblank_count(dev, crtc);
-	DRM_WAKEUP(&dev->vbl_queue[crtc]);
-	drm_vbl_send_signals(dev, crtc);
-}
-EXPORT_SYMBOL(drm_handle_vblank);
+EXPORT_SYMBOL(drm_vbl_send_signals);
 
 /**
  * Tasklet wrapper function.
diff --git a/drivers/char/drm/drm_lock.c b/drivers/char/drm/drm_lock.c
index 12dcdd1832f..0998723cde7 100644
--- a/drivers/char/drm/drm_lock.c
+++ b/drivers/char/drm/drm_lock.c
@@ -53,7 +53,6 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 	DECLARE_WAITQUEUE(entry, current);
 	struct drm_lock *lock = data;
 	int ret = 0;
-	unsigned long irqflags;
 
 	++file_priv->lock_count;
 
@@ -72,9 +71,9 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 			return -EINVAL;
 
 	add_wait_queue(&dev->lock.lock_queue, &entry);
-	spin_lock_irqsave(&dev->lock.spinlock, irqflags);
+	spin_lock_bh(&dev->lock.spinlock);
 	dev->lock.user_waiters++;
-	spin_unlock_irqrestore(&dev->lock.spinlock, irqflags);
+	spin_unlock_bh(&dev->lock.spinlock);
 	for (;;) {
 		__set_current_state(TASK_INTERRUPTIBLE);
 		if (!dev->lock.hw_lock) {
@@ -96,9 +95,9 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 			break;
 		}
 	}
-	spin_lock_irqsave(&dev->lock.spinlock, irqflags);
+	spin_lock_bh(&dev->lock.spinlock);
 	dev->lock.user_waiters--;
-	spin_unlock_irqrestore(&dev->lock.spinlock, irqflags);
+	spin_unlock_bh(&dev->lock.spinlock);
 	__set_current_state(TASK_RUNNING);
 	remove_wait_queue(&dev->lock.lock_queue, &entry);
 
@@ -199,9 +198,8 @@ int drm_lock_take(struct drm_lock_data *lock_data,
 {
 	unsigned int old, new, prev;
 	volatile unsigned int *lock = &lock_data->hw_lock->lock;
-	unsigned long irqflags;
 
-	spin_lock_irqsave(&lock_data->spinlock, irqflags);
+	spin_lock_bh(&lock_data->spinlock);
 	do {
 		old = *lock;
 		if (old & _DRM_LOCK_HELD)
@@ -213,7 +211,7 @@ int drm_lock_take(struct drm_lock_data *lock_data,
 		}
 		prev = cmpxchg(lock, old, new);
 	} while (prev != old);
-	spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
+	spin_unlock_bh(&lock_data->spinlock);
 
 	if (_DRM_LOCKING_CONTEXT(old) == context) {
 		if (old & _DRM_LOCK_HELD) {
@@ -274,16 +272,15 @@ int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context)
 {
 	unsigned int old, new, prev;
 	volatile unsigned int *lock = &lock_data->hw_lock->lock;
-	unsigned long irqflags;
 
-	spin_lock_irqsave(&lock_data->spinlock, irqflags);
+	spin_lock_bh(&lock_data->spinlock);
 	if (lock_data->kernel_waiters != 0) {
 		drm_lock_transfer(lock_data, 0);
 		lock_data->idle_has_lock = 1;
-		spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
+		spin_unlock_bh(&lock_data->spinlock);
 		return 1;
 	}
-	spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
+	spin_unlock_bh(&lock_data->spinlock);
 
 	do {
 		old = *lock;
@@ -347,20 +344,19 @@ static int drm_notifier(void *priv)
 void drm_idlelock_take(struct drm_lock_data *lock_data)
 {
 	int ret = 0;
-	unsigned long irqflags;
 
-	spin_lock_irqsave(&lock_data->spinlock, irqflags);
+	spin_lock_bh(&lock_data->spinlock);
 	lock_data->kernel_waiters++;
 	if (!lock_data->idle_has_lock) {
 
-		spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
+		spin_unlock_bh(&lock_data->spinlock);
 		ret = drm_lock_take(lock_data, DRM_KERNEL_CONTEXT);
-		spin_lock_irqsave(&lock_data->spinlock, irqflags);
+		spin_lock_bh(&lock_data->spinlock);
 
 		if (ret == 1)
 			lock_data->idle_has_lock = 1;
 	}
-	spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
+	spin_unlock_bh(&lock_data->spinlock);
 }
 EXPORT_SYMBOL(drm_idlelock_take);
 
@@ -368,9 +364,8 @@ void drm_idlelock_release(struct drm_lock_data *lock_data)
 {
 	unsigned int old, prev;
 	volatile unsigned int *lock = &lock_data->hw_lock->lock;
-	unsigned long irqflags;
 
-	spin_lock_irqsave(&lock_data->spinlock, irqflags);
+	spin_lock_bh(&lock_data->spinlock);
 	if (--lock_data->kernel_waiters == 0) {
 		if (lock_data->idle_has_lock) {
 			do {
@@ -381,7 +376,7 @@ void drm_idlelock_release(struct drm_lock_data *lock_data)
 			lock_data->idle_has_lock = 0;
 		}
 	}
-	spin_unlock_irqrestore(&lock_data->spinlock, irqflags);
+	spin_unlock_bh(&lock_data->spinlock);
 }
 EXPORT_SYMBOL(drm_idlelock_release);
 
diff --git a/drivers/char/drm/i915_dma.c b/drivers/char/drm/i915_dma.c
index f47e46e3529..88974342933 100644
--- a/drivers/char/drm/i915_dma.c
+++ b/drivers/char/drm/i915_dma.c
@@ -415,13 +415,10 @@ static void i915_emit_breadcrumb(struct drm_device *dev)
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	RING_LOCALS;
 
-	if (++dev_priv->counter > BREADCRUMB_MASK) {
-		 dev_priv->counter = 1;
-		 DRM_DEBUG("Breadcrumb counter wrapped around\n");
-	}
+	dev_priv->sarea_priv->last_enqueue = ++dev_priv->counter;
 
-	if (dev_priv->sarea_priv)
-		dev_priv->sarea_priv->last_enqueue = dev_priv->counter;
+	if (dev_priv->counter > 0x7FFFFFFFUL)
+		dev_priv->sarea_priv->last_enqueue = dev_priv->counter = 1;
 
 	BEGIN_LP_RING(4);
 	OUT_RING(CMD_STORE_DWORD_IDX);
@@ -431,26 +428,6 @@ static void i915_emit_breadcrumb(struct drm_device *dev)
 	ADVANCE_LP_RING();
 }
 
-int i915_emit_mi_flush(struct drm_device *dev, uint32_t flush)
-{
-	drm_i915_private_t *dev_priv = dev->dev_private;
-	uint32_t flush_cmd = CMD_MI_FLUSH;
-	RING_LOCALS;
-
-	flush_cmd |= flush;
-
-	i915_kernel_lost_context(dev);
-
-	BEGIN_LP_RING(4);
-	OUT_RING(flush_cmd);
-	OUT_RING(0);
-	OUT_RING(0);
-	OUT_RING(0);
-	ADVANCE_LP_RING();
-
-	return 0;
-}
-
 static int i915_dispatch_cmdbuffer(struct drm_device * dev,
 				   drm_i915_cmdbuffer_t * cmd)
 {
@@ -534,74 +511,52 @@ static int i915_dispatch_batchbuffer(struct drm_device * dev,
 	return 0;
 }