Merge branch 'linus' into core/rcu

24 files changed, 872 insertions, 1043 deletions

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 96f416afc3f..996097acb5e 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -266,11 +266,19 @@ int drm_init(struct drm_driver *driver)
 	for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) {
 		pid = (struct pci_device_id *)&driver->pci_driver.id_table[i];
 
+		/* Loop around setting up a DRM device for each PCI device
+		 * matching our ID and device class.  If we had the internal
+		 * function that pci_get_subsys and pci_get_class used, we'd
+		 * be able to just pass pid in instead of doing a two-stage
+		 * thing.
+		 */
 		pdev = NULL;
-		/* pass back in pdev to account for multiple identical cards */
 		while ((pdev =
 			pci_get_subsys(pid->vendor, pid->device, pid->subvendor,
 				       pid->subdevice, pdev)) != NULL) {
+			if ((pdev->class & pid->class_mask) != pid->class)
+				continue;
+
 			/* stealth mode requires a manual probe */
 			pci_dev_get(pdev);
 			drm_get_dev(pdev, pid, driver);
@@ -297,6 +305,8 @@ static void drm_cleanup(struct drm_device * dev)
 		return;
 	}
 
+	drm_vblank_cleanup(dev);
+
 	drm_lastclose(dev);
 
 	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 212a94f715b..1e787f894b3 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -94,7 +94,7 @@ static void vblank_disable_fn(unsigned long arg)
 	}
 }
 
-static void drm_vblank_cleanup(struct drm_device *dev)
+void drm_vblank_cleanup(struct drm_device *dev)
 {
 	/* Bail if the driver didn't call drm_vblank_init() */
 	if (dev->num_crtcs == 0)
@@ -278,10 +278,6 @@ int drm_irq_uninstall(struct drm_device * dev)
 
 	free_irq(dev->pdev->irq, dev);
 
-	drm_vblank_cleanup(dev);
-
-	dev->locked_tasklet_func = NULL;
-
 	return 0;
 }
 EXPORT_SYMBOL(drm_irq_uninstall);
@@ -699,81 +695,3 @@ void drm_handle_vblank(struct drm_device *dev, int crtc)
 	drm_vbl_send_signals(dev, crtc);
 }
 EXPORT_SYMBOL(drm_handle_vblank);
-
-/**
- * Tasklet wrapper function.
- *
- * \param data DRM device in disguise.
- *
- * Attempts to grab the HW lock and calls the driver callback on success. On
- * failure, leave the lock marked as contended so the callback can be called
- * from drm_unlock().
- */
-static void drm_locked_tasklet_func(unsigned long data)
-{
-	struct drm_device *dev = (struct drm_device *)data;
-	unsigned long irqflags;
-	void (*tasklet_func)(struct drm_device *);
-	
-	spin_lock_irqsave(&dev->tasklet_lock, irqflags);
-	tasklet_func = dev->locked_tasklet_func;
-	spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
-
-	if (!tasklet_func ||
-	    !drm_lock_take(&dev->lock,
-			   DRM_KERNEL_CONTEXT)) {
-		return;
-	}
-
-	dev->lock.lock_time = jiffies;
-	atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
-
-	spin_lock_irqsave(&dev->tasklet_lock, irqflags);
-	tasklet_func = dev->locked_tasklet_func;
-	dev->locked_tasklet_func = NULL;
-	spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
-	
-	if (tasklet_func != NULL)
-		tasklet_func(dev);
-
-	drm_lock_free(&dev->lock,
-		      DRM_KERNEL_CONTEXT);
-}
-
-/**
- * Schedule a tasklet to call back a driver hook with the HW lock held.
- *
- * \param dev DRM device.
- * \param func Driver callback.
- *
- * This is intended for triggering actions that require the HW lock from an
- * interrupt handler. The lock will be grabbed ASAP after the interrupt handler
- * completes. Note that the callback may be called from interrupt or process
- * context, it must not make any assumptions about this. Also, the HW lock will
- * be held with the kernel context or any client context.
- */
-void drm_locked_tasklet(struct drm_device *dev, void (*func)(struct drm_device *))
-{
-	unsigned long irqflags;
-	static DECLARE_TASKLET(drm_tasklet, drm_locked_tasklet_func, 0);
-
-	if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ) ||
-	    test_bit(TASKLET_STATE_SCHED, &drm_tasklet.state))
-		return;
-
-	spin_lock_irqsave(&dev->tasklet_lock, irqflags);
-
-	if (dev->locked_tasklet_func) {
-		spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
-		return;
-	}
-
-	dev->locked_tasklet_func = func;
-
-	spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
-
-	drm_tasklet.data = (unsigned long)dev;
-
-	tasklet_hi_schedule(&drm_tasklet);
-}
-EXPORT_SYMBOL(drm_locked_tasklet);
diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c
index 888159e03d2..1cfa72031f8 100644
--- a/drivers/gpu/drm/drm_lock.c
+++ b/drivers/gpu/drm/drm_lock.c
@@ -154,8 +154,6 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
 	struct drm_lock *lock = data;
-	unsigned long irqflags;
-	void (*tasklet_func)(struct drm_device *);
 
 	if (lock->context == DRM_KERNEL_CONTEXT) {
 		DRM_ERROR("Process %d using kernel context %d\n",
@@ -163,13 +161,6 @@ int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 		return -EINVAL;
 	}
 
-	spin_lock_irqsave(&dev->tasklet_lock, irqflags);
-	tasklet_func = dev->locked_tasklet_func;
-	dev->locked_tasklet_func = NULL;
-	spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
-	if (tasklet_func != NULL)
-		tasklet_func(dev);
-
 	atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]);
 
 	/* kernel_context_switch isn't used by any of the x86 drm
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 141e33004a7..66c96ec6667 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -92,7 +92,6 @@ static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
 
 	spin_lock_init(&dev->count_lock);
 	spin_lock_init(&dev->drw_lock);
-	spin_lock_init(&dev->tasklet_lock);
 	spin_lock_init(&dev->lock.spinlock);
 	init_timer(&dev->timer);
 	mutex_init(&dev->struct_mutex);
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 5ba78e4fd2b..d8fb5d8ee7e 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -3,13 +3,14 @@
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
 ccflags-y := -Iinclude/drm
-i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o i915_opregion.o \
+i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o \
           i915_suspend.o \
 	  i915_gem.o \
 	  i915_gem_debug.o \
 	  i915_gem_proc.o \
 	  i915_gem_tiling.o
 
+i915-$(CONFIG_ACPI)	+= i915_opregion.o
 i915-$(CONFIG_COMPAT)   += i915_ioc32.o
 
 obj-$(CONFIG_DRM_I915)  += i915.o
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 01de536e021..553dd4bc307 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -154,6 +154,9 @@ static int i915_dma_cleanup(struct drm_device * dev)
 	if (I915_NEED_GFX_HWS(dev))
 		i915_free_hws(dev);
 
+	dev_priv->sarea = NULL;
+	dev_priv->sarea_priv = NULL;
+
 	return 0;
 }
 
@@ -442,7 +445,7 @@ static void i915_emit_breadcrumb(struct drm_device *dev)
 
 	BEGIN_LP_RING(4);
 	OUT_RING(MI_STORE_DWORD_INDEX);
-	OUT_RING(5 << MI_STORE_DWORD_INDEX_SHIFT);
+	OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 	OUT_RING(dev_priv->counter);
 	OUT_RING(0);
 	ADVANCE_LP_RING();
@@ -573,7 +576,7 @@ static int i915_dispatch_flip(struct drm_device * dev)
 
 	BEGIN_LP_RING(4);
 	OUT_RING(MI_STORE_DWORD_INDEX);
-	OUT_RING(5 << MI_STORE_DWORD_INDEX_SHIFT);
+	OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 	OUT_RING(dev_priv->counter);
 	OUT_RING(0);
 	ADVANCE_LP_RING();
@@ -608,7 +611,6 @@ static int i915_batchbuffer(struct drm_device *dev, void *data,
 			    struct drm_file *file_priv)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
-	u32 *hw_status = dev_priv->hw_status_page;
 	drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
 	    dev_priv->sarea_priv;
 	drm_i915_batchbuffer_t *batch = data;
@@ -634,7 +636,7 @@ static int i915_batchbuffer(struct drm_device *dev, void *data,
 	mutex_unlock(&dev->struct_mutex);
 
 	if (sarea_priv)
-		sarea_priv->last_dispatch = (int)hw_status[5];
+		sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 	return ret;
 }
 
@@ -642,7 +644,6 @@ static int i915_cmdbuffer(struct drm_device *dev, void *data,
 			  struct drm_file *file_priv)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
-	u32 *hw_status = dev_priv->hw_status_page;
 	drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
 	    dev_priv->sarea_priv;
 	drm_i915_cmdbuffer_t *cmdbuf = data;
@@ -670,7 +671,7 @@ static int i915_cmdbuffer(struct drm_device *dev, void *data,
 	}
 
 	if (sarea_priv)
-		sarea_priv->last_dispatch = (int)hw_status[5];
+		sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 	return 0;
 }
 
@@ -846,16 +847,23 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 	 * and the registers being closely associated.
 	 *
 	 * According to chipset errata, on the 965GM, MSI interrupts may
-	 * be lost or delayed
+	 * be lost or delayed, but we use them anyways to avoid
+	 * stuck interrupts on some machines.
 	 */
-	if (!IS_I945G(dev) && !IS_I945GM(dev) && !IS_I965GM(dev))
-		if (pci_enable_msi(dev->pdev))
-			DRM_ERROR("failed to enable MSI\n");
+	if (!IS_I945G(dev) && !IS_I945GM(dev))
+		pci_enable_msi(dev->pdev);
 
 	intel_opregion_init(dev);
 
 	spin_lock_init(&dev_priv->user_irq_lock);
 
+	ret = drm_vblank_init(dev, I915_NUM_PIPE);
+
+	if (ret) {
+		(void) i915_driver_unload(dev);
+		return ret;
+	}
+
 	return ret;
 }
 
@@ -960,6 +968,7 @@ struct drm_ioctl_desc i915_ioctls[] = {
 	DRM_IOCTL_DEF(DRM_I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, 0),
 	DRM_IOCTL_DEF(DRM_I915_GEM_SET_TILING, i915_gem_set_tiling, 0),
 	DRM_IOCTL_DEF(DRM_I915_GEM_GET_TILING, i915_gem_get_tiling, 0),
+	DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, 0),
 };
 
 int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f20ffe17df7..adc972cc6bf 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -31,6 +31,7 @@
 #define _I915_DRV_H_
 
 #include "i915_reg.h"
+#include <linux/io-mapping.h>
 
 /* General customization:
  */
@@ -46,6 +47,8 @@ enum pipe {
 	PIPE_B,
 };
 
+#define I915_NUM_PIPE	2
+
 /* Interface history:
  *
  * 1.1: Original.
@@ -87,13 +90,6 @@ struct mem_block {
 	struct drm_file *file_priv; /* NULL: free, -1: heap, other: real files */
 };
 
-typedef struct _drm_i915_vbl_swap {
-	struct list_head head;
-	drm_drawable_t drw_id;
-	unsigned int pipe;
-	unsigned int sequence;
-} drm_i915_vbl_swap_t;
-
 struct opregion_header;
 struct opregion_acpi;
 struct opregion_swsci;
@@ -138,6 +134,7 @@ typedef struct drm_i915_private {
 	int user_irq_refcount;
 	/** Cached value of IMR to avoid reads in updating the bitfield */
 	u32 irq_mask_reg;
+	u32 pipestat[2];
 
 	int tex_lru_log_granularity;
 	int allow_batchbuffer;
@@ -145,10 +142,6 @@ typedef struct drm_i915_private {
 	unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds;
 	int vblank_pipe;
 
-	spinlock_t swaps_lock;
-	drm_i915_vbl_swap_t vbl_swaps;
-	unsigned int swaps_pending;
-
 	struct intel_opregion opregion;
 
 	/* Register state */
@@ -156,6 +149,8 @@ typedef struct drm_i915_private {
 	u32 saveDSPACNTR;
 	u32 saveDSPBCNTR;
 	u32 saveDSPARB;
+	u32 saveRENDERSTANDBY;
+	u32 saveHWS;
 	u32 savePIPEACONF;
 	u32 savePIPEBCONF;
 	u32 savePIPEASRC;
@@ -240,16 +235,19 @@ typedef struct drm_i915_private {
 	u8 saveDACDATA[256*3]; /* 256 3-byte colors */
 	u8 saveCR[37];
 
-	/** Work task for vblank-related ring access */
-	struct work_struct vblank_work;
-
 	struct {
 		struct drm_mm gtt_space;
 
+		struct io_mapping *gtt_mapping;
+
 		/**
 		 * List of objects currently involved in rendering from the
 		 * ringbuffer.
 		 *
+		 * Includes buffers having the contents of their GPU caches
+		 * flushed, not necessarily primitives.  last_rendering_seqno
+		 * represents when the rendering involved will be completed.
+		 *
 		 * A reference is held on the buffer while on this list.
 		 */
 		struct list_head active_list;
@@ -259,6 +257,8 @@ typedef struct drm_i915_private {
 		 * still have a write_domain which needs to be flushed before
 		 * unbinding.
 		 *
+		 * last_rendering_seqno is 0 while an object is in this list.
+		 *
 		 * A reference is held on the buffer while on this list.
 		 */
 		struct list_head flushing_list;
@@ -267,6 +267,8 @@ typedef struct drm_i915_private {
 		 * LRU list of objects which are not in the ringbuffer and
 		 * are ready to unbind, but are still in the GTT.
 		 *
+		 * last_rendering_seqno is 0 while an object is in this list.
+		 *
 		 * A reference is not held on the buffer while on this list,
 		 * as merely being GTT-bound shouldn't prevent its being
 		 * freed, and we'll pull it off the list in the free path.
@@ -377,8 +379,8 @@ struct drm_i915_gem_object {
 	uint32_t agp_type;
 
 	/**
-	 * Flagging of which individual pages are valid in GEM_DOMAIN_CPU when
-	 * GEM_DOMAIN_CPU is not in the object's read domain.
+	 * If present, while GEM_DOMAIN_CPU is in the read domain this array
+	 * flags which individual pages are valid.
 	 */
 	uint8_t *page_cpu_valid;
 };
@@ -400,9 +402,6 @@ struct drm_i915_gem_request {
 	/** Time at which this request was emitted, in jiffies. */
 	unsigned long emitted_jiffies;
 
-	/** Cache domains that were flushed at the start of the request. */
-	uint32_t flush_domains;
-
 	struct list_head list;
 };
 
@@ -441,7 +440,6 @@ extern int i915_irq_wait(struct drm_device *dev, void *data,
 void i915_user_irq_get(struct drm_device *dev);
 void i915_user_irq_put(struct drm_device *dev);
 
-extern void i915_vblank_work_handler(struct work_struct *work);
 extern irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS);
 extern void i915_driver_irq_preinstall(struct drm_device * dev);
 extern int i915_driver_irq_postinstall(struct drm_device *dev);
@@ -457,6 +455,13 @@ extern int i915_vblank_swap(struct drm_device *dev, void *data,
 			    struct drm_file *file_priv);
 extern void i915_enable_irq(drm_i915_private_t *dev_priv, u32 mask);
 
+void
+i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
+
+void
+i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask);
+
+
 /* i915_mem.c */
 extern int i915_mem_alloc(struct drm_device *dev, void *data,
 			  struct drm_file *file_priv);
@@ -502,6 +507,8 @@ int i915_gem_set_tiling(struct drm_device *dev, void *data,
 			struct drm_file *file_priv);
 int i915_gem_get_tiling(struct drm_device *dev, void *data,
 			struct drm_file *file_priv);
+int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
+				struct drm_file *file_priv);
 void i915_gem_load(struct drm_device *dev);
 int i915_gem_proc_init(struct drm_minor *minor);
 void i915_gem_proc_cleanup(struct drm_minor *minor);
@@ -539,11 +546,18 @@ extern int i915_restore_state(struct drm_device *dev);
 extern int i915_save_state(struct drm_device *dev);
 extern int i915_restore_state(struct drm_device *dev);
 
+#ifdef CONFIG_ACPI
 /* i915_opregion.c */
 extern int intel_opregion_init(struct drm_device *dev);
 extern void intel_opregion_free(struct drm_device *dev);
 extern void opregion_asle_intr(struct drm_device *dev);
 extern void opregion_enable_asle(struct drm_device *dev);
+#else
+static inline int intel_opregion_init(struct drm_device *dev) { return 0; }
+static inline void intel_opregion_free(struct drm_device *dev) { return; }
+static inline void opregion_asle_intr(struct drm_device *dev) { return; }
+static inline void opregion_enable_asle(struct drm_device *dev) { return; }
+#endif
 
 /**
  * Lock test for when it's just for synchronization of ring access.
@@ -610,8 +624,9 @@ extern void opregion_enable_asle(struct drm_device *dev);
  * The area from dword 0x20 to 0x3ff is available for driver usage.
  */
 #define READ_HWSP(dev_priv, reg)  (((volatile u32*)(dev_priv->hw_status_page))[reg])
-#define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, 5)
+#define READ_BREADCRUMB(dev_priv) READ_HWSP(dev_priv, I915_BREADCRUMB_INDEX)
 #define I915_GEM_HWS_INDEX		0x20
+#define I915_BREADCRUMB_INDEX		0x21
 
 extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
 
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 17ae330ff26..ad672d85482 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -31,21 +31,23 @@
 #include "i915_drv.h"
 #include <linux/swap.h>
 
-static int
-i915_gem_object_set_domain(struct drm_gem_object *obj,
-			    uint32_t read_domains,
-			    uint32_t write_domain);
-static int
-i915_gem_object_set_domain_range(struct drm_gem_object *obj,
-				 uint64_t offset,
-				 uint64_t size,
-				 uint32_t read_domains,
-				 uint32_t write_domain);
-static int
-i915_gem_set_domain(struct drm_gem_object *obj,
-		    struct drm_file *file_priv,
-		    uint32_t read_domains,
-		    uint32_t write_domain);
+#define I915_GEM_GPU_DOMAINS	(~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
+
+static void
+i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
+				  uint32_t read_domains,
+				  uint32_t write_domain);
+static void i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj);
+static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj);
+static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj);
+static int i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj,
+					     int write);
+static int i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj,
+					     int write);
+static int i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj,
+						     uint64_t offset,
+						     uint64_t size);
+static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj);
 static int i915_gem_object_get_page_list(struct drm_gem_object *obj);
 static void i915_gem_object_free_page_list(struct drm_gem_object *obj);
 static int i915_gem_object_wait_rendering(struct drm_gem_object *obj);
@@ -79,6 +81,22 @@ i915_gem_init_ioctl(struct drm_device *dev, void *data,
 	return 0;
 }
 
+int
+i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
+			    struct drm_file *file_priv)
+{
+	struct drm_i915_gem_get_aperture *args = data;
+
+	if (!(dev->driver->driver_features & DRIVER_GEM))
+		return -ENODEV;
+
+	args->aper_size = dev->gtt_total;
+	args->aper_available_size = (args->aper_size -
+				     atomic_read(&dev->pin_memory));
+
+	return 0;
+}
+
 
 /**
  * Creates a new mm object and returns a handle to it.
@@ -144,8 +162,8 @@ i915_gem_pread_ioctl(struct drm_device *dev, void *data,
 
 	mutex_lock(&dev->struct_mutex);
 
-	ret = i915_gem_object_set_domain_range(obj, args->offset, args->size,
-					       I915_GEM_DOMAIN_CPU, 0);
+	ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset,
+							args->size);
 	if (ret != 0) {
 		drm_gem_object_unreference(obj);
 		mutex_unlock(&dev->struct_mutex);
@@ -171,35 +189,50 @@ i915_gem_pread_ioctl(struct drm_device *dev, void *data,
 	return 0;
 }
 
-/*
- * Try to write quickly with an atomic kmap. Return true on success.
- *
- * If this fails (which includes a partial write), we'll redo the whole
- * thing with the slow version.
- *
- * This is a workaround for the low performance of iounmap (approximate
- * 10% cpu cost on normal 3D workloads).  kmap_atomic on HIGHMEM kernels
- * happens to let us map card memory without taking IPIs.  When the vmap
- * rework lands we should be able to dump this hack.
+/* This is the fast write path which cannot handle
+ * page faults in the source data
  */
-static inline int fast_user_write(unsigned long pfn, char __user *user_data,
-				  int l, int o)
+
+static inline int
+fast_user_write(struct io_mapping *mapping,
+		loff_t page_base, int page_offset,
+		char __user *user_data,
+		int length)
 {
-#ifdef CONFIG_HIGHMEM
-	unsigned long unwritten;
 	char *vaddr_atomic;
+	unsigned long unwritten;
 
-	vaddr_atomic = kmap_atomic_pfn(pfn, KM_USER0);
-#if WATCH_PWRITE
-	DRM_INFO("pwrite i %d o %d l %d pfn %ld vaddr %p\n",
-		 i, o, l, pfn, vaddr_atomic);
-#endif
-	unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + o, user_data, l);
-	kunmap_atomic(vaddr_atomic, KM_USER0);
-	return !unwritten;
-#else
+	vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base);
+	unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset,
+						      user_data, length);
+	io_mapping_unmap_atomic(vaddr_atomic);
+	if (unwritten)
+		return -EFAULT;
+	return 0;
+}
+
+/* Here's the write path which can sleep for
+ * page faults
+ */
+
+static inline int
+slow_user_write(struct io_mapping *mapping,
+		loff_t page_base, int page_offset,
+		char __user *user_data,
+		int length)
+{
+	char __iomem *vaddr;
+	unsigned long unwritten;
+
+	vaddr = io_mapping_map_wc(mapping, page_base);
+	if (vaddr == NULL)
+		return -EFAULT;
+	unwritten = __copy_from_user(vaddr + page_offset,
+				     user_data, length);
+	io_mapping_unmap(vaddr);
+	if (unwritten)
+		return -EFAULT;
 	return 0;
-#endif
 }
 
 static int
@@ -208,10 +241,12 @@ i915_gem_gtt_pwrite(struct drm_device *dev, struct drm_gem_object *obj,
 		    struct drm_file *file_priv)
 {
 	struct drm_i915_gem_object *obj_priv = obj->driver_private;
+	drm_i915_private_t *dev_priv = dev->dev_private;
 	ssize_t remain;
-	loff_t offset;
+	loff_t offset, page_base;
 	char __user *user_data;
-	int ret = 0;
+	int page_offset, page_length;
+	int ret;
 
 	user_data = (char __user *) (uintptr_t) args->data_ptr;
 	remain = args->size;
@@ -225,8 +260,7 @@ i915_gem_gtt_pwrite(struct drm_device *dev, struct drm_gem_object *obj,
 		mutex_unlock(&dev->struct_mutex);
 		return ret;
 	}
-	ret = i915_gem_set_domain(obj, file_priv,
-				  I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
+	ret = i915_gem_object_set_to_gtt_domain(obj, 1);
 	if (ret)
 		goto fail;
 
@@ -235,57 +269,37 @@ i915_gem_gtt_pwrite(struct drm_device *dev, struct drm_gem_object *obj,
 	obj_priv->dirty = 1;
 
 	while (remain > 0) {
-		unsigned long pfn;
-		int i, o, l;
-
 		/* Operation in this page
 		 *
-		 * i = page number
-		 * o = offset within page
-		 * l = bytes to copy
+		 * page_base = page offset within aperture
+		 * page_offset = offset within page
+		 * page_length = bytes to copy for this page
 		 */
-		i = offset >> PAGE_SHIFT;
-		o = offset & (PAGE_SIZE-1);
-		l = remain;
-		if ((o + l) > PAGE_SIZE)
-			l = PAGE_SIZE - o;
-
-		pfn = (dev->agp->base >> PAGE_SHIFT) + i;
-
-		if (!fast_user_write(pfn, user_data, l, o)) {
-			unsigned long unwritten;
-			char __iomem *vaddr;
-
-			vaddr = ioremap_wc(pfn << PAGE_SHIFT, PAGE_SIZE);
-#if WATCH_PWRITE
-			DRM_INFO("pwrite slow i %d o %d l %d "
-				 "pfn %ld vaddr %p\n",
-				 i, o, l, pfn, vaddr);
-#endif
-			if (vaddr == NULL) {
-				ret = -EFAULT;
-				goto fail;
-			}
-			unwritten = __copy_from_user(vaddr + o, user_data, l);
-#if WATCH_PWRITE
-			DRM_INFO("unwritten %ld\n", unwritten);
-#endif
-			iounmap(vaddr);
-			if (unwritten) {
-				ret = -EFAULT;
+		page_base = (offset & ~(PAGE_SIZE-1));
+		page_offset = offset & (PAGE_SIZE-1);
+		page_length = remain;
+		if ((page_offset + remain) > PAGE_SIZE)
+			page_length = PAGE_SIZE - page_offset;
+
+		ret = fast_user_write (dev_priv->mm.gtt_mapping, page_base,
+				       page_offset, user_data, page_length);
+
+		/* If we get a fault while copying data, then (presumably) our
+		 * source page isn't available. In this case, use the
+		 * non-atomic function
+		 */
+		if (ret) {
+			ret = slow_user_write (dev_priv->mm.gtt_mapping,
+					       page_base, page_offset,
+					       user_data, page_length);
+			if (ret)
 				goto fail;
-			}
 		}
 
-		remain -= l;
-		user_data += l;
-		offset += l;
+		remain -= page_length;
+		user_data += page_length;
+		offset += page_length;
 	}
-#if WATCH_PWRITE && 1
-	i915_gem_clflush_object(obj);
-	i915_gem_dump_object(obj, args->offset + args->size, __func__, ~0);
-	i915_gem_clflush_object(obj);
-#endif
 
 fail:
 	i915_gem_object_unpin(obj);
@@ -305,8 +319,7 @@ i915_gem_shmem_pwrite(struct drm_device *dev, struct drm_gem_object *obj,
 
 	mutex_lock(&dev->struct_mutex);
 
-	ret = i915_gem_set_domain(obj, file_priv,
-				  I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
+	ret = i915_gem_object_set_to_cpu_domain(obj, 1);
 	if (ret) {
 		mutex_unlock(&dev->struct_mutex);
 		return ret;
@@ -382,7 +395,8 @@ i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
 }
 
 /**
- * Called when user space prepares to use an object
+ * Called when user space prepares to use an object with the CPU, either
+ * through the mmap ioctl's mapping or a GTT mapping.
  */
 int
 i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
@@ -390,11 +404,26 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 {
 	struct drm_i915_gem_set_domain *args = data;
 	struct drm_gem_object *obj;
+	uint32_t read_domains = args->read_domains;
+	uint32_t write_domain = args->write_domain;
 	int ret;
 
 	if (!(dev->driver->driver_features & DRIVER_GEM))
 		return -ENODEV;
 
+	/* Only handle setting domains to types used by the CPU. */
+	if (write_domain & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
+		return -EINVAL;
+
+	if (read_domains & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
+		return -EINVAL;
+
+	/* Having something in the write domain implies it's in the read
+	 * domain, and only that read domain.  Enforce that in the request.
+	 */
+	if (write_domain != 0 && read_domains != write_domain)
+		return -EINVAL;
+
 	obj = drm_gem_object_lookup(dev, file_priv, args->handle);
 	if (obj == NULL)
 		return -EBADF;
@@ -402,10 +431,21 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 	mutex_lock(&dev->struct_mutex);
 #if WATCH_BUF
 	DRM_INFO("set_domain_ioctl %p(%d), %08x %08x\n",
-		 obj, obj->size, args->read_domains, args->write_domain);
+		 obj, obj->size, read_domains, write_domain);
 #endif
-	ret = i915_gem_set_domain(obj, file_priv,
-				  args->read_domains, args->write_domain);
+	if (read_domains & I915_GEM_DOMAIN_GTT) {
+		ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0);
+
+		/* Silently promote "you're not bound, there was nothing to do"
+		 * to success, since the client was just asking us to
+		 * make sure everything was done.
+		 */
+		if (ret == -EINVAL)
+			ret = 0;
+	} else {
+		ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0);
+	}
+
 	drm_gem_object_unreference(obj);
 	mutex_unlock(&dev->struct_mutex);
 	return ret;
@@ -440,10 +480,9 @@ i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
 	obj_priv = obj->driver_private;
 
 	/* Pinned buffers may be scanout, so flush the cache */
-	if ((obj->write_domain & I915_GEM_DOMAIN_CPU) && obj_priv->pin_count) {
-		i915_gem_clflush_object(obj);
-		drm_agp_chipset_flush(dev);
-	}
+	if (obj_priv->pin_count)
+		i915_gem_object_flush_cpu_write_domain(obj);
+
 	drm_gem_object_unreference(obj);
 	mutex_unlock(&dev->struct_mutex);
 	return ret;
@@ -517,7 +556,7 @@ i915_gem_object_free_page_list(struct drm_gem_object *obj)
 }
 
 static void
-i915_gem_object_move_to_active(struct drm_gem_object *obj)
+i915_gem_object_move_to_active(struct drm_gem_object *obj, uint32_t seqno)
 {
 	struct drm_device *dev = obj->dev;
 	drm_i915_private_t *dev_priv = dev->dev_private;
@@ -531,8 +570,20 @@ i915_gem_object_move_to_active(struct drm_gem_object *obj)
 	/* Move from whatever list we were on to the tail of execution. */
 	list_move_tail(&obj_priv->list,
 		       &dev_priv->mm.active_list);
+	obj_priv->last_rendering_seqno = seqno;
 }
 
+static void
+i915_gem_object_move_to_flushing(struct drm_gem_object *obj)
+{
+	struct drm_device *dev = obj->dev;
+	drm_i915_private_t *dev_priv = dev->dev_private;
+	struct drm_i915_gem_object *obj_priv = obj->driver_private;
+
+	BUG_ON(!obj_priv->active);
+	list_move_tail(&obj_priv->list, &dev_priv->mm.flushing_list);
+	obj_priv->last_rendering_seqno = 0;
+}
 
 static void
 i915_gem_object_move_to_inactive(struct drm_gem_object *obj)
@@ -547,6 +598,7 @@ i915_gem_object_move_to_inactive(struct drm_gem_object *obj)
 	else
 		list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list);
 
+	obj_priv->last_rendering_seqno = 0;
 	if (obj_priv->active) {
 		obj_priv->active = 0;
 		drm_gem_object_unreference(obj);
@@ -595,10 +647,28 @@ i915_add_request(struct drm_device *dev, uint32_t flush_domains)
 
 	request->seqno = seqno;
 	request->emitted_jiffies = jiffies;
-	request->flush_domains = flush_domains;
 	was_empty = list_empty(&dev_priv->mm.request_list);
 	list_add_tail(&request->list, &dev_priv->mm.request_list);
 
+	/* Associate any objects on the flushing list matching the write
+	 * domain we're flushing with our flush.
+	 */
+	if (flush_domains != 0) {
+		struct drm_i915_gem_object *obj_priv, *next;
+
+		list_for_each_entry_safe(obj_priv, next,
+					 &dev_priv->mm.flushing_list, list) {
+			struct drm_gem_object *obj = obj_priv->obj;
+
+			if ((obj->write_domain & flush_domains) ==
+			    obj->write_domain) {
+				obj->write_domain = 0;
+				i915_gem_object_move_to_active(obj, seqno);
+			}
+		}
+
+	}
+
 	if (was_empty && !dev_priv->mm.suspended)
 		schedule_delayed_work(&dev_priv->mm.retire_work, HZ);
 	return seqno;
@@ -661,30 +731,10 @@ i915_gem_retire_request(struct drm_device *dev,
 			 __func__, request->seqno, obj);
 #endif
 
-		if (obj->write_domain != 0) {
-			list_move_tail(&obj_priv->list,
-				       &dev_priv->mm.flushing_list);
-		} else {
+		if (obj->write_domain != 0)
+			i915_gem_object_move_to_flushing(obj);
+		else
 			i915_gem_object_move_to_inactive(obj);
-		}
-	}
-
-	if (request->flush_domains != 0) {
-		struct drm_i915_gem_object *obj_priv, *next;
-
-		/* Clear the write domain and activity from any buffers
-		 * that are just waiting for a flush matching the one retired.
-		 */
-		list_for_each_entry_safe(obj_priv, next,
-					 &dev_priv->mm.flushing_list, list) {
-			struct drm_gem_object *obj = obj_priv->obj;
-
-			if (obj->write_domain & request->flush_domains) {
-				obj->write_domain = 0;
-				i915_gem_object_move_to_inactive(obj);
-			}
-		}
-
 	}
 }
 
@@ -877,25 +927,10 @@ i915_gem_object_wait_rendering(struct drm_gem_object *obj)
 	struct drm_i915_gem_object *obj_priv = obj->driver_private;
 	int ret;
 
-	/* If there are writes queued to the buffer, flush and
-	 * create a new seqno to wait for.
+	/* This function only exists to support waiting for existing rendering,
+	 * not for emitting required flushes.
 	 */
-	if (obj->write_domain & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)) {
-		uint32_t write_domain = obj->write_domain;
-#if WATCH_BUF
-		DRM_INFO("%s: flushing object %p from write domain %08x\n",
-			  __func__, obj, write_domain);
-#endif
-		i915_gem_flush(dev, 0, write_domain);
-
-		i915_gem_object_move_to_active(obj);
-		obj_priv->last_rendering_seqno = i915_add_request(dev,
-								  write_domain);
-		BUG_ON(obj_priv->last_rendering_seqno == 0);
-#if WATCH_LRU
-		DRM_INFO("%s: flush moves to exec list %p\n", __func__, obj);
-#endif
-	}
+	BUG_ON((obj->write_domain & I915_GEM_GPU_DOMAINS) != 0);
 
 	/* If there is rendering queued on the buffer being evicted, wait for
 	 * it.
@@ -935,24 +970,16 @@ i915_gem_object_unbind(struct drm_gem_object *obj)
 		return -EINVAL;
 	}
 
-	/* Wait for any rendering to complete
-	 */
-	ret = i915_gem_object_wait_rendering(obj);
-	if (ret) {
-		DRM_ERROR("wait_rendering failed: %d\n", ret);
-		return ret;
-	}
-
 	/* Move the object to the CPU domain to ensure that
 	 * any possible CPU writes while it's not in the GTT
 	 * are flushed when we go to remap it. This will
 	 * also ensure that all pending GPU writes are finished
 	 * before we unbind.
 	 */
-	ret = i915_gem_object_set_domain(obj, I915_GEM_DOMAIN_CPU,
-					 I915_GEM_DOMAIN_CPU);
+	ret = i915_gem_object_set_to_cpu_domain(obj, 1);
 	if (ret) {
-		DRM_ERROR("set_domain failed: %d\n", ret);
+		if (ret != -ERESTARTSYS)
+			DRM_ERROR("set_domain failed: %d\n", ret);
 		return ret;
 	}
 
@@ -1068,6 +1095,21 @@ i915_gem_evict_something(struct drm_device *dev)
 }
 
 static int
+i915_gem_evict_everything(struct drm_device *dev)
+{
+	int ret;
+
+	for (;;) {
+		ret = i915_gem_evict_something(dev);
+		if (ret != 0)
+			break;
+	}
+	if (ret == -ENOMEM)
+		return 0;
+	return ret;
+}
+
+static int
 i915_gem_object_get_page_list(struct drm_gem_object *obj)
 {
 	struct drm_i915_gem_object *obj_priv = obj->driver_private;
@@ -1153,7 +1195,8 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment)
 
 		ret = i915_gem_evict_something(dev);
 		if (ret != 0) {
-			DRM_ERROR("Failed to evict a buffer %d\n", ret);
+			if (ret != -ERESTARTSYS)
+				DRM_ERROR("Failed to evict a buffer %d\n", ret);
 			return ret;
 		}
 		goto search_free;
@@ -1213,6 +1256,143 @@ i915_gem_clflush_object(struct drm_gem_object *obj)
 	drm_clflush_pages(obj_priv->page_list, obj->size / PAGE_SIZE);
 }
 
+/** Flushes any GPU write domain for the object if it's dirty. */
+static void
+i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj)
+{
+	struct drm_device *dev = obj->dev;
+	uint32_t seqno;
+
+	if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0)
+		return;
+
+	/* Queue the GPU write cache flushing we need. */
+	i915_gem_flush(dev, 0, obj->write_domain);
+	seqno = i915_add_request(dev, obj->write_domain);
+	obj->write_domain = 0;
+	i915_gem_object_move_to_active(obj, seqno);
+}
+
+/** Flushes the GTT write domain for the object if it's dirty. */
+static void
+i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj)
+{
+	if (obj->write_domain != I915_GEM_DOMAIN_GTT)
+		return;
+
+	/* No actual flushing is required for the GTT write domain.   Writes
+	 * to it immediately go to main memory as far as we know, so there's
+	 * no chipset flush.  It also doesn't land in render cache.
+	 */
+	obj->write_domain = 0;
+}
+
+/** Flushes the CPU write domain for the object if it's dirty. */
+static void
+i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj)
+{
+	struct drm_device *dev = obj->dev;
+
+	if (obj->write_domain != I915_GEM_DOMAIN_CPU)
+		return;
+
+	i915_gem_clflush_object(obj);
+	drm_agp_chipset_flush(dev);
+	obj->write_domain = 0;
+}
+
+/**
+ * Moves a single object to the GTT read, and possibly write domain.
+ *
+ * This function returns when the move is complete, including waiting on
+ * flushes to occur.
+ */
+static int
+i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write)
+{
+	struct drm_i915_gem_object *obj_priv = obj->driver_private;
+	int ret;
+
+	/* Not valid to be called on unbound objects. */
+	if (obj_priv->gtt_space == NULL)
+		return -EINVAL;
+
+	i915_gem_object_flush_gpu_write_domain(obj);
+	/* Wait on any GPU rendering and flushing to occur. */
+	ret = i915_gem_object_wait_rendering(obj);
+	if (ret != 0)
+		return ret;
+
+	/* If we're writing through the GTT domain, then CPU and GPU caches
+	 * will need to be invalidated at next use.
+	 */
+	if (write)
+		obj->read_domains &= I915_GEM_DOMAIN_GTT;
+
+	i915_gem_object_flush_cpu_write_domain(obj);
+
+	/* It should now be out of any other write domains, and we can update
+	 * the domain values for our changes.
+	 */
+	BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0);
+	obj->read_domains |= I915_GEM_DOMAIN_GTT;
+	if (write) {
+		obj->write_domain = I915_GEM_DOMAIN_GTT;
+		obj_priv->dirty = 1;
+	}
+
+	return 0;
+}
+
+/**
+ * Moves a single object to the CPU read, and possibly write domain.
+ *
+ * This function returns when the move is complete, including waiting on
+ * flushes to occur.
+ */
+static int
+i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write)
+{
+	struct drm_device *dev = obj->dev;
+	int ret;
+
+	i915_gem_object_flush_gpu_write_domain(obj);
+	/* Wait on any GPU rendering and flushing to occur. */
+	ret = i915_gem_object_wait_rendering(obj);
+	if (ret != 0)
+		return ret;
+
+	i915_gem_object_flush_gtt_write_domain(obj);
+
+	/* If we have a partially-valid cache of the object in the CPU,
+	 * finish invalidating it and free the per-page flags.
+	 */
+	i915_gem_object_set_to_full_cpu_read_domain(obj);
+
+	/* Flush the CPU cache if it's still invalid. */
+	if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) {
+		i915_gem_clflush_object(obj);
+		drm_agp_chipset_flush(dev);
+
+		obj->read_domains |= I915_GEM_DOMAIN_CPU;
+	}
+
+	/* It should now be out of any other write domains, and we can update
+	 * the domain values for our changes.
+	 */
+	BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0);
+
+	/* If we're writing through the CPU, then the GPU read domains will
+	 * need to be invalidated at next use.
+	 */
+	if (write) {
+		obj->read_domains &= I915_GEM_DOMAIN_CPU;
+		obj->write_domain = I915_GEM_DOMAIN_CPU;
+	}
+
+	return 0;
+}
+
 /*
  * Set the next domain for the specified object. This
  * may not actually perform the necessary flushing/invaliding though,
@@ -1324,16 +1504,18 @@ i915_gem_clflush_object(struct drm_gem_object *obj)
  *		MI_FLUSH
  *		drm_agp_chipset_flush
  */
-static int
-i915_gem_object_set_domain(struct drm_gem_object *obj,
-			    uint32_t read_domains,
-			    uint32_t write_domain)
+static void
+i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
+				  uint32_t read_domains,
+				  uint32_t write_domain)
 {
 	struct drm_device		*dev = obj->dev;
 	struct drm_i915_gem_object	*obj_priv = obj->driver_private;
 	uint32_t			invalidate_domains = 0;
 	uint32_t			flush_domains = 0;
-	int				ret;
+
+	BUG_ON(read_domains & I915_GEM_DOMAIN_CPU);
+	BUG_ON(write_domain == I915_GEM_DOMAIN_CPU);
 
 #if WATCH_BUF
 	DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n",
@@ -1370,34 +1552,11 @@ i915_gem_object_set_domain(struct drm_gem_object *obj,
 		DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n",
 			 __func__, flush_domains, invalidate_domains);
 #endif
-		/*
-		 * If we're invaliding the CPU cache and flushing a GPU cache,
-		 * then pause for rendering so that the GPU caches will be
-		 * flushed before the cpu cache is invalidated
-		 */
-		if ((invalidate_domains & I915_GEM_DOMAIN_CPU) &&
-		    (flush_domains & ~(I915_GEM_DOMAIN_CPU |
-				       I915_GEM_DOMAIN_GTT))) {
-			ret = i915_gem_object_wait_rendering(obj);
-			if (ret)
-				return ret;
-		}
 		i915_gem_clflush_object(obj);
 	}
 
 	if ((write_domain | flush_domains) != 0)
 		obj->write_domain = write_domain;
-
-	/* If we're invalidating the CPU domain, clear the per-page CPU
-	 * domain list as well.
-	 */
-	if (obj_priv->page_cpu_valid != NULL &&
-	    (write_domain != 0 ||
-	     read_domains & I915_GEM_DOMAIN_CPU)) {
-		drm_free(obj_priv->page_cpu_valid, obj->size / PAGE_SIZE,
-			 DRM_MEM_DRIVER);
-		obj_priv->page_cpu_valid = NULL;
-	}
 	obj->read_domains = read_domains;
 
 	dev->invalidate_domains |= invalidate_domains;
@@ -1408,49 +1567,94 @@ i915_gem_object_set_domain(struct drm_gem_object *obj,
 		 obj->read_domains, obj->write_domain,
 		 dev->invalidate_domains, dev->flush_domains);
 #endif
-	return 0;
 }
 
 /**
- * Set the read/write domain on a range of the object.
+ * Moves the object from a partially CPU read to a full one.
  *
- * Currently only implemented for CPU reads, otherwise drops to normal
- * i915_gem_object_set_domain().
+ * Note that this only resolves i915_gem_object_set_cpu_read_domain_range(),
+ * and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU).
  */
-static int
-i915_gem_object_set_domain_range(struct drm_gem_object *obj,
-				 uint64_t offset,
-				 uint64_t size,
-				 uint32_t read_domains,
-				 uint32_t write_domain)
+static void
+i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj)
 {
+	struct drm_device *dev = obj->dev;
 	struct drm_i915_gem_object *obj_priv = obj->driver_private;
-	int ret, i;
 
-	if (obj->read_domains & I915_GEM_DOMAIN_CPU)
-		return 0;
+	if (!obj_priv->page_cpu_valid)
+		return;
 
-	if (read_domains != I915_GEM_DOMAIN_CPU ||
-	    write_domain != 0)
-		return i915_gem_object_set_domain(obj,
-						  read_domains, write_domain);
+	/* If we're partially in the CPU read domain, finish moving it in.
+	 */
+	if (obj->read_domains & I915_GEM_DOMAIN_CPU) {
+		int i;
 
-	/* Wait on any GPU rendering to the object to be flushed. */
-	if (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) {
-		ret = i915_gem_object_wait_rendering(obj);
-		if (ret)
-			return ret;
+		for (i = 0; i <= (obj->size - 1) / PAGE_SIZE; i++) {
+			if (obj_priv->page_cpu_valid[i])
+				continue;
+			drm_clflush_pages(obj_priv->page_list + i, 1);
+		}
+		drm_agp_chipset_flush(dev);
 	}
 
+	/* Free the page_cpu_valid mappings which are now stale, whether
+	 * or not we've got I915_GEM_DOMAIN_CPU.
+	 */
+	drm_free(obj_priv->page_cpu_valid, obj->size / PAGE_SIZE,
+		 DRM_MEM_DRIVER);
+	obj_priv->page_cpu_valid = NULL;
+}
+
+/**
+ * Set the CPU read domain on a range of the object.
+ *
+ * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's
+ * not entirely valid.  The page_cpu_valid member of the object flags which
+ * pages have been flushed, and will be respected by
+ * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping
+ * of the whole object.
+ *
+ * This function returns when the move is complete, including waiting on
+ * flushes to occur.
+ */
+static int
+i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj,
+					  uint64_t offset, uint64_t size)
+{
+	struct drm_i915_gem_object *obj_priv = obj->driver_private;
+	int i, ret;
+
+	if (offset == 0 && size == obj->size)
+		return i915_gem_object_set_to_cpu_domain(obj, 0);
+
+	i915_gem_object_flush_gpu_write_domain(obj);
+	/* Wait on any GPU rendering and flushing to occur. */
+	ret = i915_gem_object_wait_rendering(obj);
+	if (ret != 0)
+		return ret;
+	i915_gem_object_flush_gtt_write_domain(obj);
+
+	/* If we're already fully in the CPU read domain, we're done. */
+	if (obj_priv->page_cpu_valid == NULL &&
+	    (obj->read_domains & I915_GEM_DOMAIN_CPU) != 0)
+		return 0;
+
+	/* Otherwise, create/clear the per-page CPU read domain flag if we're
+	 * newly adding I915_GEM_DOMAIN_CPU
+	 */
 	if (obj_priv->page_cpu_valid == NULL) {
 		obj_priv->page_cpu_valid = drm_calloc(1, obj->size / PAGE_SIZE,
 						      DRM_MEM_DRIVER);
-	}
+		if (obj_priv->page_cpu_valid == NULL)
+			return -ENOMEM;
+	} else if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0)
+		memset(obj_priv->page_cpu_valid, 0, obj->size / PAGE_SIZE);
 
 	/* Flush the cache on any pages that are still invalid from the CPU's
 	 * perspective.
 	 */
-	for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; i++) {
+	for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE;
+	     i++) {
 		if (obj_priv->page_cpu_valid[i])
 			continue;
 
@@ -1459,39 +1663,14 @@ i915_gem_object_set_domain_range(struct drm_gem_object *obj,
 		obj_priv->page_cpu_valid[i] = 1;
 	}
 
-	return 0;
-}
-
-/**
- * Once all of the objects have been set in the proper domain,
- * perform the necessary flush and invalidate operations.
- *
- * Returns the write domains flushed, for use in flush tracking.
- */
-static uint32_t
-i915_gem_dev_set_domain(struct drm_device *dev)
-{
-	uint32_t flush_domains = dev->flush_domains;
-
-	/*
-	 * Now that all the buffers are synced to the proper domains,
-	 * flush and invalidate the collected domains
+	/* It should now be out of any other write domains, and we can update
+	 * the domain values for our changes.
 	 */
-	if (dev->invalidate_domains | dev->flush_domains) {
-#if WATCH_EXEC
-		DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n",
-			  __func__,
-			 dev->invalidate_domains,
-			 dev->flush_domains);
-#endif
-		i915_gem_flush(dev,
-			       dev->invalidate_domains,
-			       dev->flush_domains);
-		dev->invalidate_domains = 0;
-		dev->flush_domains = 0;
-	}
+	BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0);
 
-	return flush_domains;
+	obj->read_domains |= I915_GEM_DOMAIN_CPU;
+
+	return 0;
 }
 
 /**
@@ -1503,12 +1682,12 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object *obj,
 				 struct drm_i915_gem_exec_object *entry)
 {
 	struct drm_device *dev = obj->dev;
+	drm_i915_private_t *dev_priv = dev->dev_private;
 	struct drm_i915_gem_relocation_entry reloc;
 	struct drm_i915_gem_relocation_entry __user *relocs;
 	struct drm_i915_gem_object *obj_priv = obj->driver_private;
 	int i, ret;
-	uint32_t last_reloc_offset = -1;
-	void __iomem *reloc_page = NULL;
+	void __iomem *reloc_page;
 
 	/* Choose the GTT offset for our buffer and put it there. */
 	ret = i915_gem_object_pin(obj, (uint32_t) entry->alignment);
@@ -1572,6 +1751,18 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object *obj,
 			return -EINVAL;
 		}
 
+		if (reloc.write_domain & I915_GEM_DOMAIN_CPU ||
+		    reloc.read_domains & I915_GEM_DOMAIN_CPU) {
+			DRM_ERROR("reloc with read/write CPU domains: "
+				  "obj %p target %d offset %d "
+				  "read %08x write %08x",
+				  obj, reloc.target_handle,
+				  (int) reloc.offset,
+				  reloc.read_domains,
+				  reloc.write_domain);
+			return -EINVAL;
+		}
+
 		if (reloc.write_domain && target_obj->pending_write_domain &&
 		    reloc.write_domain != target_obj->pending_write_domain) {
 			DRM_ERROR("Write domain conflict: "
@@ -1612,45 +1803,22 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object *obj,
 			continue;
 		}
 
-		/* Now that we're going to actually write some data in,
-		 * make sure that any rendering using this buffer's contents
-		 * is completed.
-		 */
-		i915_gem_object_wait_rendering(obj);
-
-		/* As we're writing through the gtt, flush
-		 * any CPU writes before we write the relocations
-		 */
-		if (obj->write_domain & I915_GEM_DOMAIN_CPU) {
-			i915_gem_clflush_object(obj);
-			drm_agp_chipset_flush(dev);
-			obj->write_domain = 0;
+		ret = i915_gem_object_set_to_gtt_domain(obj, 1);
+		if (ret != 0) {
+			drm_gem_object_unreference(target_obj);
+			i915_gem_object_unpin(obj);
+			return -EINVAL;
 		}
 
 		/* Map the page containing the relocation we're going to
 		 * perform.
 		 */
 		reloc_offset = obj_priv->gtt_offset + reloc.offset;
-		if (reloc_page == NULL ||
-		    (last_reloc_offset & ~(PAGE_SIZE - 1)) !=
-		    (reloc_offset & ~(PAGE_SIZE - 1))) {
-			if (reloc_page != NULL)
-				iounmap(reloc_page);
-
-			reloc_page = ioremap_wc(dev->agp->base +
-						(reloc_offset &
-						 ~(PAGE_SIZE - 1)),
-						PAGE_SIZE);
-			last_reloc_offset = reloc_offset;
-			if (reloc_page == NULL) {
-				drm_gem_object_unreference(target_obj);
-				i915_gem_object_unpin(obj);
-				return -ENOMEM;
-			}
-		}
-
+		reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping,
+						      (reloc_offset &
+						       ~(PAGE_SIZE - 1)));
 		reloc_entry = (uint32_t __iomem *)(reloc_page +
-					   (reloc_offset & (PAGE_SIZE - 1)));
+						   (reloc_offset & (PAGE_SIZE - 1)));
 		reloc_val = target_obj_priv->gtt_offset + reloc.delta;
 
 #if WATCH_BUF
@@ -1659,6 +1827,7 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object *obj,
 			  readl(reloc_entry), reloc_val);
 #endif
 		writel(reloc_val, reloc_entry);
+		io_mapping_unmap_atomic(reloc_page);
 
 		/* Write the updated presumed offset for this entry back out
 		 * to the user.
@@ -1674,9 +1843,6 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object *obj,
 		drm_gem_object_unreference(target_obj);
 	}
 
-	if (reloc_page != NULL)
-		iounmap(reloc_page);
-
 #if WATCH_BUF
 	if (0)
 		i915_gem_dump_object(obj, 128, __func__, ~0);
@@ -1783,6 +1949,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 	int ret, i, pinned = 0;
 	uint64_t exec_offset;
 	uint32_t seqno, flush_domains;
+	int pin_tries;
 
 #if WATCH_EXEC
 	DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n",
@@ -1831,14 +1998,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 		return -EBUSY;
 	}
 
-	/* Zero the gloabl flush/invalidate flags. These
-	 * will be modified as each object is bound to the
-	 * gtt
-	 */
-	dev->invalidate_domains = 0;
-	dev->flush_domains = 0;
-
-	/* Look up object handles and perform the relocations */
+	/* Look up object handles */
 	for (i = 0; i < args->buffer_count; i++) {
 		object_list[i] = drm_gem_object_lookup(dev, file_priv,
 						       exec_list[i].handle);
@@ -1848,17 +2008,39 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 			ret = -EBADF;
 			goto err;
 		}
+	}
 
-		object_list[i]->pending_read_domains = 0;
-		object_list[i]->pending_write_domain = 0;
-		ret = i915_gem_object_pin_and_relocate(object_list[i],
-						       file_priv,
-						       &exec_list[i]);
-		if (ret) {
-			DRM_ERROR("object bind and relocate failed %d\n", ret);
+	/* Pin and relocate */
+	for (pin_tries = 0; ; pin_tries++) {
+		ret = 0;
+		for (i = 0; i < args->buffer_count; i++) {
+			object_list[i]->pending_read_domains = 0;
+			object_list[i]->pending_write_domain = 0;
+			ret = i915_gem_object_pin_and_relocate(object_list[i],
+							       file_priv,
+							       &exec_list[i]);
+			if (ret)
+				break;
+			pinned = i + 1;
+		}
+		/* success */
+		if (ret == 0)
+			break;
+
+		/* error other than GTT full, or we've already tried again */
+		if (ret != -ENOMEM || pin_tries >= 1) {
+			DRM_ERROR("Failed to pin buffers %d\n", ret);
 			goto err;
 		}
-		pinned = i + 1;
+
+		/* unpin all of our buffers */
+		for (i = 0; i < pinned; i++)
+			i915_gem_object_unpin(object_list[i]);
+
+		/* evict everyone we can from the aperture */
+		ret = i915_gem_evict_everything(dev);
+		if (ret)
+			goto err;
 	}
 
 	/* Set the pending read domains for the batch buffer to COMMAND */
@@ -1868,32 +2050,37 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 
 	i915_verify_inactive(dev, __FILE__, __LINE__);
 
+	/* Zero the global flush/invalidate flags. These
+	 * will be modified as new domains are computed
+	 * for each object
+	 */
+	dev->invalidate_domains = 0;
+	dev->flush_domains = 0;
+
 	for (i = 0; i < args->buffer_count; i++) {
 		struct drm_gem_object *obj = object_list[i];
-		struct drm_i915_gem_object *obj_priv = obj->driver_private;
-
-		if (obj_priv->gtt_space == NULL) {
-			/* We evicted the buffer in the process of validating
-			 * our set of buffers in.  We could try to recover by
-			 * kicking them everything out and trying again from
-			 * the start.
-			 */
-			ret = -ENOMEM;
-			goto err;
-		}
 
-		/* make sure all previous memory operations have passed */
-		ret = i915_gem_object_set_domain(obj,
-						 obj->pending_read_domains,
-						 obj->pending_write_domain);
-		if (ret)
-			goto err;
+		/* Compute new gpu domains and update invalidate/flush */
+		i915_gem_object_set_to_gpu_domain(obj,
+						  obj->pending_read_domains,
+						  obj->pending_write_domain);
 	}
 
 	i915_verify_inactive(dev, __FILE__, __LINE__);
 
-	/* Flush/invalidate caches and chipset buffer */
-	flush_domains = i915_gem_dev_set_domain(dev);
+	if (dev->invalidate_domains | dev->flush_domains) {
+#if WATCH_EXEC
+		DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n",
+			  __func__,
+			 dev->invalidate_domains,
+			 dev->flush_domains);
+#endif
+		i915_gem_flush(dev,
+			       dev->invalidate_domains,
+			       dev->flush_domains);
+		if (dev->flush_domains)
+			(void)i915_add_request(dev, dev->flush_domains);
+	}
 
 	i915_verify_inactive(dev, __FILE__, __LINE__);
 
@@ -1913,8 +2100,6 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 			      ~0);
 #endif
 
-	(void)i915_add_request(dev, flush_domains);
-
 	/* Exec the batchbuffer */
 	ret = i915_dispatch_gem_execbuffer(dev, args, exec_offset);
 	if (ret) {
@@ -1942,10 +2127,8 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 	i915_file_priv->mm.last_gem_seqno = seqno;
 	for (i = 0; i < args->buffer_count; i++) {
 		struct drm_gem_object *obj = object_list[i];
-		struct drm_i915_gem_object *obj_priv = obj->driver_private;
 
-		i915_gem_object_move_to_active(obj);
-		obj_priv->last_rendering_seqno = seqno;
+		i915_gem_object_move_to_active(obj, seqno);
 #if WATCH_LRU
 		DRM_INFO("%s: move to exec list %p\n", __func__, obj);
 #endif
@@ -2076,11 +2259,7 @@ i915_gem_pin_ioctl(struct drm_device *dev, void *data,
 	/* XXX - flush the CPU caches for pinned objects
 	 * as the X server doesn't manage domains yet
 	 */
-	if (obj->write_domain & I915_GEM_DOMAIN_CPU) {
-		i915_gem_clflush_object(obj);
-		drm_agp_chipset_flush(dev);
-		obj->write_domain = 0;
-	}
+	i915_gem_object_flush_cpu_write_domain(obj);
 	args->offset = obj_priv->gtt_offset;
 	drm_gem_object_unreference(obj);
 	mutex_unlock(&dev->struct_mutex);
@@ -2182,29 +2361,6 @@ void i915_gem_free_object(struct drm_gem_object *obj)
 	drm_free(obj->driver_private, 1, DRM_MEM_DRIVER);
 }
 
-static int
-i915_gem_set_domain(struct drm_gem_object *obj,
-		    struct drm_file *file_priv,
-		    uint32_t read_domains,
-		    uint32_t write_domain)
-{
-	struct drm_device *dev = obj->dev;
-	int ret;
-	uint32_t flush_domains;
-
-	BUG_ON(!mutex_is_locked(&dev->struct_mutex));
-
-	ret = i915_gem_object_set_domain(obj, read_domains, write_domain);
-	if (ret)
-		return ret;
-	flush_domains = i915_gem_dev_set_domain(obj->dev);
-
-	if (flush_domains & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT))
-		(void) i915_add_request(dev, flush_domains);
-
-	return 0;
-}
-
 /** Unbinds all objects that are on the given buffer list. */
 static int
 i915_gem_evict_from_list(struct drm_device *dev, struct list_head *head)
@@ -2299,29 +2455,52 @@ i915_gem_idle(struct drm_device *dev)
 
 	i915_gem_retire_requests(dev);
 
-	/* Active and flushing should now be empty as we've
-	 * waited for a sequence higher than any pending execbuffer
-	 */
-	BUG_ON(!list_empty(&dev_priv->mm.active_list));
-	BUG_ON(!list_empty(&dev_priv->mm.flushing_list));
+	if (!dev_priv->mm.wedged) {
+		/* Active and flushing should now be empty as we've
+		 * waited for a sequence higher than any pending execbuffer
+		 */
+		WARN_ON(!list_empty(&dev_priv->mm.active_list));
+		WARN_ON(!list_empty(&dev_priv->mm.flushing_list));
+		/* Request should now be empty as we've also waited
+		 * for the last request in the list
+		 */
+		WARN_ON(!list_empty(&dev_priv->mm.request_list));
+	}
 
-	/* Request should now be empty as we've also waited
-	 * for the last request in the list
+	/* Empty the active and flushing lists to inactive.  If there's
+	 * anything left at this point, it means that we're wedged and
+	 * nothing good's going to happen by leaving them there.  So strip
+	 * the GPU domains and just stuff them onto inactive.
 	 */
-	BUG_ON(!list_empty(&dev_priv->mm.request_list));
+	while (!list_empty(&dev_priv->mm.active_list)) {
+		struct drm_i915_gem_object *obj_priv;
+
+		obj_priv = list_first_entry(&dev_priv->mm.active_list,
+					    struct drm_i915_gem_object,
+					    list);
+		obj_priv->obj->write_domain &= ~I915_GEM_GPU_DOMAINS;
+		i915_gem_object_move_to_inactive(obj_priv->obj);
+	}
+
+	while (!list_empty(&dev_priv->mm.flushing_list)) {
+		struct drm_i915_gem_object *obj_priv;
 
-	/* Move all buffers out of the GTT. */
+		obj_priv = list_first_entry(&dev_priv->mm.flushing_list,
+					    struct drm_i915_gem_object,
+					    list);
+		obj_priv->obj->write_domain &= ~I915_GEM_GPU_DOMAINS;
+		i915_gem_object_move_to_inactive(obj_priv->obj);
+	}
+
+
+	/* Move all inactive buffers out of the GTT. */
 	ret = i915_gem_evict_from_list(dev, &dev_priv->mm.inactive_list);
+	WARN_ON(!list_empty(&dev_priv->mm.inactive_list));
 	if (ret) {
 		mutex_unlock(&dev->struct_mutex);
 		return ret;
 	}
 
-	BUG_ON(!list_empty(&dev_priv->mm.active_list));
-	BUG_ON(!list_empty(&dev_priv->mm.flushing_list));
-	BUG_ON(!list_empty(&dev_priv->mm.inactive_list));
-	BUG_ON(!list_empty(&dev_priv->mm.request_list));
-
 	i915_gem_cleanup_ringbuffer(dev);
 	mutex_unlock(&dev->struct_mutex);
 
@@ -2518,6 +2697,10 @@ i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
 	if (ret != 0)
 		return ret;
 
+	dev_priv->mm.gtt_mapping = io_mapping_create_wc(dev->agp->base,
+							dev->agp->agp_info.aper_size
+							* 1024 * 1024);
+
 	mutex_lock(&dev->struct_mutex);
 	BUG_ON(!list_empty(&dev_priv->mm.active_list));
 	BUG_ON(!list_empty(&dev_priv->mm.flushing_list));
@@ -2535,11 +2718,13 @@ int
 i915_gem_leavevt_ioctl(struct drm_device *dev, void *data,
 		       struct drm_file *file_priv)
 {
+	drm_i915_private_t *dev_priv = dev->dev_private;
 	int ret;
 
 	ret = i915_gem_idle(dev);
 	drm_irq_uninstall(dev);
 
+	io_mapping_free(dev_priv->mm.gtt_mapping);
 	return ret;
 }
 
diff --git a/drivers/gpu/drm/i915/i915_gem_proc.c b/drivers/gpu/drm/i915/i915_gem_proc.c
index 93de15b4c9a..e8d5abe1250 100644
--- a/drivers/gpu/drm/i915/i915_gem_proc.c
+++ b/drivers/gpu/drm/i915/i915_gem_proc.c
@@ -166,10 +166,9 @@ static int i915_gem_request_info(char *buf, char **start, off_t offset,
 	list_for_each_entry(gem_request, &dev_priv->mm.request_list,
 			    list)
 	{
-		DRM_PROC_PRINT("    %d @ %d %08x\n",
+		DRM_PROC_PRINT("    %d @ %d\n",
 			       gem_request->seqno,
-			       (int) (jiffies - gem_request->emitted_jiffies),
-			       gem_request->flush_domains);
+			       (int) (jiffies - gem_request->emitted_jiffies));
 	}
 	if (len > request + offset)
 		return request;
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index e8b85ac4ca0..a8cb69469c6 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -119,9 +119,10 @@ i915_gem_detect_bit_6_swizzle(struct drm_device *dev)
 			    dcc & DCC_CHANNEL_XOR_DISABLE) {
 				swizzle_x = I915_BIT_6_SWIZZLE_9_10;
 				swizzle_y = I915_BIT_6_SWIZZLE_9;
-			} else if (IS_I965GM(dev) || IS_GM45(dev)) {
-				/* GM965 only does bit 11-based channel
-				 * randomization
+			} else if ((IS_I965GM(dev) || IS_GM45(dev)) &&
+				   (dcc & DCC_CHANNEL_XOR_BIT_17) == 0) {
+				/* GM965/GM45 does either bit 11 or bit 17
+				 * swizzling.
 				 */
 				swizzle_x = I915_BIT_6_SWIZZLE_9_10_11;
 				swizzle_y = I915_BIT_6_SWIZZLE_9_11;
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 26f48932a51..69b9a42da95 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -33,11 +33,23 @@
 
 #define MAX_NOPID ((u32)~0)
 
-/** These are the interrupts used by the driver */
-#define I915_INTERRUPT_ENABLE_MASK (I915_USER_INTERRUPT |		\
-				    I915_ASLE_INTERRUPT |		\
-				    I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | \
-				    I915_DISPLAY_PIPE_B_EVENT_INTERRUPT)
+/**
+ * Interrupts that are always left unmasked.
+ *
+ * Since pipe events are edge-triggered from the PIPESTAT register to IIR,
+ * we leave them always unmasked in IMR and then control enabling them through
+ * PIPESTAT alone.
+ */
+#define I915_INTERRUPT_ENABLE_FIX (I915_ASLE_INTERRUPT | \
+				   I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |  \
+				   I915_DISPLAY_PIPE_B_EVENT_INTERRUPT)
+
+/** Interrupts that we mask and unmask at runtime. */
+#define I915_INTERRUPT_ENABLE_VAR (I915_USER_INTERRUPT)
+
+/** These are all of the interrupts used by the driver */
+#define I915_INTERRUPT_ENABLE_MASK (I915_INTERRUPT_ENABLE_FIX | \
+				    I915_INTERRUPT_ENABLE_VAR)
 
 void
 i915_enable_irq(drm_i915_private_t *dev_priv, u32 mask)
@@ -59,6 +71,41 @@ i915_disable_irq(drm_i915_private_t *dev_priv, u32 mask)
 	}
 }
 
+static inline u32
+i915_pipestat(int pipe)
+{
+	if (pipe == 0)
+		return PIPEASTAT;
+	if (pipe == 1)
+		return PIPEBSTAT;
+	BUG();
+}
+
+void
+i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask)
+{
+	if ((dev_priv->pipestat[pipe] & mask) != mask) {
+		u32 reg = i915_pipestat(pipe);
+
+		dev_priv->pipestat[pipe] |= mask;
+		/* Enable the interrupt, clear any pending status */
+		I915_WRITE(reg, dev_priv->pipestat[pipe] | (mask >> 16));
+		(void) I915_READ(reg);
+	}
+}
+
+void
+i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask)
+{
+	if ((dev_priv->pipestat[pipe] & mask) != 0) {
+		u32 reg = i915_pipestat(pipe);
+
+		dev_priv->pipestat[pipe] &= ~mask;
+		I915_WRITE(reg, dev_priv->pipestat[pipe]);
+		(void) I915_READ(reg);
+	}
+}
+
 /**
  * i915_pipe_enabled - check if a pipe is enabled
  * @dev: DRM device
@@ -80,211 +127,6 @@ i915_pipe_enabled(struct drm_device *dev, int pipe)
 	return 0;
 }
 
-/**
- * Emit blits for scheduled buffer swaps.
- *
- * This function will be called with the HW lock held.
- * Because this function must grab the ring mutex (dev->struct_mutex),
- * it can no longer run at soft irq time. We'll fix this when we do
- * the DRI2 swap buffer work.
- */
-static void i915_vblank_tasklet(struct drm_device *dev)
-{
-	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
-	unsigned long irqflags;
-	struct list_head *list, *tmp, hits, *hit;
-	int nhits, nrects, slice[2], upper[2], lower[2], i;
-	unsigned counter[2];
-	struct drm_drawable_info *drw;
-	drm_i915_sarea_t *sarea_priv = dev_priv->sarea_priv;
-	u32 cpp = dev_priv->cpp;
-	u32 cmd = (cpp == 4) ? (XY_SRC_COPY_BLT_CMD |
-				XY_SRC_COPY_BLT_WRITE_ALPHA |
-				XY_SRC_COPY_BLT_WRITE_RGB)
-			     : XY_SRC_COPY_BLT_CMD;
-	u32 src_pitch = sarea_priv->pitch * cpp;
-	u32 dst_pitch = sarea_priv->pitch * cpp;
-	u32 ropcpp = (0xcc << 16) | ((cpp - 1) << 24);
-	RING_LOCALS;
-
-	mutex_lock(&dev->struct_mutex);
-
-	if (IS_I965G(dev) && sarea_priv->front_tiled) {
-		cmd |= XY_SRC_COPY_BLT_DST_TILED;
-		dst_pitch >>= 2;
-	}
-	if (IS_I965G(dev) && sarea_priv->back_tiled) {
-		cmd |= XY_SRC_COPY_BLT_SRC_TILED;
-		src_pitch >>= 2;
-	}
-
-	counter[0] = drm_vblank_count(dev, 0);
-	counter[1] = drm_vblank_count(dev, 1);
-
-	DRM_DEBUG("\n");
-
-	INIT_LIST_HEAD(&hits);
-
-	nhits = nrects = 0;
-
-	spin_lock_irqsave(&dev_priv->swaps_lock, irqflags);
-
-	/* Find buffer swaps scheduled for this vertical blank */
-	list_for_each_safe(list, tmp, &dev_priv->vbl_swaps.head) {
-		drm_i915_vbl_swap_t *vbl_swap =
-			list_entry(list, drm_i915_vbl_swap_t, head);
-		int pipe = vbl_swap->pipe;
-
-		if ((counter[pipe] - vbl_swap->sequence) > (1<<23))
-			continue;
-
-		list_del(list);
-		dev_priv->swaps_pending--;
-		drm_vblank_put(dev, pipe);
-
-		spin_unlock(&dev_priv->swaps_lock);
-		spin_lock(&dev->drw_lock);
-
-		drw = drm_get_drawable_info(dev, vbl_swap->drw_id);
-
-		list_for_each(hit, &hits) {
-			drm_i915_vbl_swap_t *swap_cmp =
-				list_entry(hit, drm_i915_vbl_swap_t, head);
-			struct drm_drawable_info *drw_cmp =
-				drm_get_drawable_info(dev, swap_cmp->drw_id);
-
-			/* Make sure both drawables are still
-			 * around and have some rectangles before
-			 * we look inside to order them for the
-			 * blts below.
-			 */
-			if (drw_cmp && drw_cmp->num_rects > 0 &&
-			    drw && drw->num_rects > 0 &&
-			    drw_cmp->rects[0].y1 > drw->rects[0].y1) {
-				list_add_tail(list, hit);
-				break;
-			}
-		}
-
-		spin_unlock(&dev->drw_lock);
-
-		/* List of hits was empty, or we reached the end of it */
-		if (hit == &hits)
-			list_add_tail(list, hits.prev);
-
-		nhits++;
-
-		spin_lock(&dev_priv->swaps_lock);
-	}
-
-	if (nhits == 0) {
-		spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags);
-		mutex_unlock(&dev->struct_mutex);
-		return;
-	}
-
-	spin_unlock(&dev_priv->swaps_lock);
-
-	i915_kernel_lost_context(dev);
-
-	if (IS_I965G(dev)) {
-		BEGIN_LP_RING(4);
-
-		OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
-		OUT_RING(0);
-		OUT_RING(((sarea_priv->width - 1) & 0xffff) | ((sarea_priv->height - 1) << 16));
-		OUT_RING(0);
-		ADVANCE_LP_RING();
-	} else {
-		BEGIN_LP_RING(6);
-
-		OUT_RING(GFX_OP_DRAWRECT_INFO);
-		OUT_RING(0);
-		OUT_RING(0);
-		OUT_RING(sarea_priv->width | sarea_priv->height << 16);
-		OUT_RING(sarea_priv->width | sarea_priv->height << 16);
-		OUT_RING(0);
-
-		ADVANCE_LP_RING();
-	}
-
-	sarea_priv->ctxOwner = DRM_KERNEL_CONTEXT;
-
-	upper[0] = upper[1] = 0;
-	slice[0] = max(sarea_priv->pipeA_h / nhits, 1);
-	slice[1] = max(sarea_priv->pipeB_h / nhits, 1);
-	lower[0] = sarea_priv->pipeA_y + slice[0];
-	lower[1] = sarea_priv->pipeB_y + slice[0];
-
-	spin_lock(&dev->drw_lock);
-
-	/* Emit blits for buffer swaps, partitioning both outputs into as many
-	 * slices as there are buffer swaps scheduled in order to avoid tearing
-	 * (based on the assumption that a single buffer swap would always
-	 * complete before scanout starts).
-	 */
-	for (i = 0; i++ < nhits;
-	     upper[0] = lower[0], lower[0] += slice[0],
-	     upper[1] = lower[1], lower[1] += slice[1]) {
-		if (i == nhits)
-			lower[0] = lower[1] = sarea_priv->height;
-
-		list_for_each(hit, &hits) {
-			drm_i915_vbl_swap_t *swap_hit =
-				list_entry(hit, drm_i915_vbl_swap_t, head);
-			struct drm_clip_rect *rect;
-			int num_rects, pipe;
-			unsigned short top, bottom;
-
-			drw = drm_get_drawable_info(dev, swap_hit->drw_id);
-
-			/* The drawable may have been destroyed since
-			 * the vblank swap was queued
-			 */
-			if (!drw)
-				continue;
-
-			rect = drw->rects;
-			pipe = swap_hit->pipe;
-			top = upper[pipe];
-			bottom = lower[pipe];
-
-			for (num_rects = drw->num_rects; num_rects--; rect++) {
-				int y1 = max(rect->y1, top);
-				int y2 = min(rect->y2, bottom);
-
-				if (y1 >= y2)
-					continue;
-
-				BEGIN_LP_RING(8);
-
-				OUT_RING(cmd);
-				OUT_RING(ropcpp | dst_pitch);
-				OUT_RING((y1 << 16) | rect->x1);
-				OUT_RING((y2 << 16) | rect->x2);
-				OUT_RING(sarea_priv->front_offset);
-				OUT_RING((y1 << 16) | rect->x1);
-				OUT_RING(src_pitch);
-				OUT_RING(sarea_priv->back_offset);
-
-				ADVANCE_LP_RING();
-			}
-		}
-	}
-
-	spin_unlock_irqrestore(&dev->drw_lock, irqflags);
-	mutex_unlock(&dev->struct_mutex);
-
-	list_for_each_safe(hit, tmp, &hits) {
-		drm_i915_vbl_swap_t *swap_hit =
-			list_entry(hit, drm_i915_vbl_swap_t, head);
-
-		list_del(hit);
-
-		drm_free(swap_hit, sizeof(*swap_hit), DRM_MEM_DRIVER);
-	}
-}
-
 /* Called from drm generic code, passed a 'crtc', which
  * we use as a pipe index
  */
@@ -322,121 +164,106 @@ u32 i915_get_vblank_counter(struct drm_device *dev, int pipe)
 	return count;
 }
 
-void
-i915_vblank_work_handler(struct work_struct *work)
-{
-	drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
-						    vblank_work);
-	struct drm_device *dev = dev_priv->dev;
-	unsigned long irqflags;
-
-	if (dev->lock.hw_lock == NULL) {
-		i915_vblank_tasklet(dev);
-		return;
-	}
-
-	spin_lock_irqsave(&dev->tasklet_lock, irqflags);
-	dev->locked_tasklet_func = i915_vblank_tasklet;
-	spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
-
-	/* Try to get the lock now, if this fails, the lock
-	 * holder will execute the tasklet during unlock
-	 */
-	if (!drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT))
-		return;
-
-	dev->lock.lock_time = jiffies;
-	atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
-
-	spin_lock_irqsave(&dev->tasklet_lock, irqflags);
-	dev->locked_tasklet_func = NULL;
-	spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
-
-	i915_vblank_tasklet(dev);
-	drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
-}
-
 irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
 {
 	struct drm_device *dev = (struct drm_device *) arg;
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
-	u32 iir;
+	u32 iir, new_iir;
 	u32 pipea_stats, pipeb_stats;
+	u32 vblank_status;
+	u32 vblank_enable;
 	int vblank = 0;
+	unsigned long irqflags;
+	int irq_received;
+	int ret = IRQ_NONE;
 
 	atomic_inc(&dev_priv->irq_received);
 
-	if (dev->pdev->msi_enabled)
-		I915_WRITE(IMR, ~0);
 	iir = I915_READ(IIR);
 
-	if (iir == 0) {
-		if (dev->pdev->msi_enabled) {
-			I915_WRITE(IMR, dev_priv->irq_mask_reg);
-			(void) I915_READ(IMR);
-		}
-		return IRQ_NONE;
+	if (IS_I965G(dev)) {
+		vblank_status = I915_START_VBLANK_INTERRUPT_STATUS;
+		vblank_enable = PIPE_START_VBLANK_INTERRUPT_ENABLE;
+	} else {
+		vblank_status = I915_VBLANK_INTERRUPT_STATUS;
+		vblank_enable = I915_VBLANK_INTERRUPT_ENABLE;
 	}
 
-	/*
-	 * Clear the PIPE(A|B)STAT regs before the IIR otherwise
-	 * we may get extra interrupts.
-	 */
-	if (iir & I915_DISPLAY_PIPE_A_EVENT_INTERRUPT) {
+	for (;;) {
+		irq_received = iir != 0;
+
+		/* Can't rely on pipestat interrupt bit in iir as it might
+		 * have been cleared after the pipestat interrupt was received.
+		 * It doesn't set the bit in iir again, but it still produces
+		 * interrupts (for non-MSI).
+		 */
+		spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags);
 		pipea_stats = I915_READ(PIPEASTAT);
-		if (!(dev_priv->vblank_pipe & DRM_I915_VBLANK_PIPE_A))
-			pipea_stats &= ~(PIPE_START_VBLANK_INTERRUPT_ENABLE |
-					 PIPE_VBLANK_INTERRUPT_ENABLE);
-		else if (pipea_stats & (PIPE_START_VBLANK_INTERRUPT_STATUS|
-					PIPE_VBLANK_INTERRUPT_STATUS)) {
+		pipeb_stats = I915_READ(PIPEBSTAT);
+		/*
+		 * Clear the PIPE(A|B)STAT regs before the IIR
+		 */
+		if (pipea_stats & 0x8000ffff) {
+			I915_WRITE(PIPEASTAT, pipea_stats);
+			irq_received = 1;
+		}
+
+		if (pipeb_stats & 0x8000ffff) {
+			I915_WRITE(PIPEBSTAT, pipeb_stats);
+			irq_received = 1;
+		}
+		spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags);
+
+		if (!irq_received)
+			break;
+
+		ret = IRQ_HANDLED;
+
+		I915_WRITE(IIR, iir);
+		new_iir = I915_READ(IIR); /* Flush posted writes */
+
+		if (dev_priv->sarea_priv)
+			dev_priv->sarea_priv->last_dispatch =
+				READ_BREADCRUMB(dev_priv);
+
+		if (iir & I915_USER_INTERRUPT) {
+			dev_priv->mm.irq_gem_seqno = i915_get_gem_seqno(dev);
+			DRM_WAKEUP(&dev_priv->irq_queue);
+		}
+
+		if (pipea_stats & vblank_status) {
 			vblank++;
 			drm_handle_vblank(dev, 0);
 		}
 
-		I915_WRITE(PIPEASTAT, pipea_stats);
-	}
-	if (iir & I915_DISPLAY_PIPE_B_EVENT_INTERRUPT) {
-		pipeb_stats = I915_READ(PIPEBSTAT);
-		/* Ack the event */
-		I915_WRITE(PIPEBSTAT, pipeb_stats);
-
-		/* The vblank interrupt gets enabled even if we didn't ask for
-		   it, so make sure it's shut down again */
-		if (!(dev_priv->vblank_pipe & DRM_I915_VBLANK_PIPE_B))
-			pipeb_stats &= ~(PIPE_START_VBLANK_INTERRUPT_ENABLE |
-					 PIPE_VBLANK_INTERRUPT_ENABLE);
-		else if (pipeb_stats & (PIPE_START_VBLANK_INTERRUPT_STATUS|
-					PIPE_VBLANK_INTERRUPT_STATUS)) {
+		if (pipeb_stats & vblank_status) {
 			vblank++;
 			drm_handle_vblank(dev, 1);
 		}
 
-		if (pipeb_stats & I915_LEGACY_BLC_EVENT_STATUS)
+		if ((pipeb_stats & I915_LEGACY_BLC_EVENT_STATUS) ||
+		    (iir & I915_ASLE_INTERRUPT))
 			opregion_asle_intr(dev);
-		I915_WRITE(PIPEBSTAT, pipeb_stats);
-	}
-
-	I915_WRITE(IIR, iir);
-	if (dev->pdev->msi_enabled)
-		I915_WRITE(IMR, dev_priv->irq_mask_reg);
-	(void) I915_READ(IIR); /* Flush posted writes */
-
-	if (dev_priv->sarea_priv)
-		dev_priv->sarea_priv->last_dispatch =
-			READ_BREADCRUMB(dev_priv);
 
-	if (iir & I915_USER_INTERRUPT) {
-		dev_priv->mm.irq_gem_seqno = i915_get_gem_seqno(dev);
-		DRM_WAKEUP(&dev_priv->irq_queue);
+		/* With MSI, interrupts are only generated when iir
+		 * transitions from zero to nonzero.  If another bit got
+		 * set while we were handling the existing iir bits, then
+		 * we would never get another interrupt.
+		 *
+		 * This is fine on non-MSI as well, as if we hit this path
+		 * we avoid exiting the interrupt handler only to generate
+		 * another one.
+		 *
+		 * Note that for MSI this could cause a stray interrupt report
+		 * if an interrupt landed in the time between writing IIR and
+		 * the posting read.  This should be rare enough to never
+		 * trigger the 99% of 100,000 interrupts test for disabling
+		 * stray interrupts.
+		 */
+		iir = new_iir;
 	}
 
-	if (iir & I915_ASLE_INTERRUPT)
-		opregion_asle_intr(dev);
-
-	if (vblank && dev_priv->swaps_pending > 0)
-		schedule_work(&dev_priv->vblank_work);
-
-	return IRQ_HANDLED;
+	return ret;
 }
 
 static int i915_emit_irq(struct drm_device * dev)
@@ -454,12 +281,10 @@ static int i915_emit_irq(struct drm_device * dev)
 	if (dev_priv->sarea_priv)
 		dev_priv->sarea_priv->last_enqueue = dev_priv->counter;
 
-	BEGIN_LP_RING(6);
+	BEGIN_LP_RING(4);
 	OUT_RING(MI_STORE_DWORD_INDEX);
-	OUT_RING(5 << MI_STORE_DWORD_INDEX_SHIFT);
+	OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
 	OUT_RING(dev_priv->counter);
-	OUT_RING(0);
-	OUT_RING(0);
 	OUT_RING(MI_USER_INTERRUPT);
 	ADVANCE_LP_RING();
 
@@ -574,48 +399,16 @@ int i915_irq_wait(struct drm_device *dev, void *data,
 int i915_enable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
-	u32	pipestat_reg = 0;
-	u32	pipestat;
-	u32	interrupt = 0;
 	unsigned long irqflags;
 
-	switch (pipe) {
-	case 0:
-		pipestat_reg = PIPEASTAT;
-		interrupt = I915_DISPLAY_PIPE_A_EVENT_INTERRUPT;
-		break;
-	case 1:
-		pipestat_reg = PIPEBSTAT;
-		interrupt = I915_DISPLAY_PIPE_B_EVENT_INTERRUPT;
-		break;
-	default:
-		DRM_ERROR("tried to enable vblank on non-existent pipe %d\n",
-			  pipe);
-		return 0;
-	}
-
 	spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags);
-	/* Enabling vblank events in IMR comes before PIPESTAT write, or
-	 * there's a race where the PIPESTAT vblank bit gets set to 1, so
-	 * the OR of enabled PIPESTAT bits goes to 1, so the PIPExEVENT in
-	 * ISR flashes to 1, but the IIR bit doesn't get set to 1 because
-	 * IMR masks it.  It doesn't ever get set after we clear the masking
-	 * in IMR because the ISR bit is edge, not level-triggered, on the
-	 * OR of PIPESTAT bits.
-	 */
-	i915_enable_irq(dev_priv, interrupt);
-	pipestat = I915_READ(pipestat_reg);
 	if (IS_I965G(dev))
-		pipestat |= PIPE_START_VBLANK_INTERRUPT_ENABLE;
+		i915_enable_pipestat(dev_priv, pipe,
+				     PIPE_START_VBLANK_INTERRUPT_ENABLE);
 	else
-		pipestat |= PIPE_VBLANK_INTERRUPT_ENABLE;
-	/* Clear any stale interrupt status */
-	pipestat |= (PIPE_START_VBLANK_INTERRUPT_STATUS |
-		     PIPE_VBLANK_INTERRUPT_STATUS);
-	I915_WRITE(pipestat_reg, pipestat);
-	(void) I915_READ(pipestat_reg);	/* Posting read */
+		i915_enable_pipestat(dev_priv, pipe,
+				     PIPE_VBLANK_INTERRUPT_ENABLE);
 	spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags);
-
 	return 0;
 }
 
@@ -625,37 +418,12 @@ int i915_enable_vblank(struct drm_device *dev, int pipe)
 void i915_disable_vblank(struct drm_device *dev, int pipe)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
-	u32	pipestat_reg = 0;
-	u32	pipestat;
-	u32	interrupt = 0;
 	unsigned long irqflags;
 
-	switch (pipe) {
-	case 0:
-		pipestat_reg = PIPEASTAT;
-		interrupt = I915_DISPLAY_PIPE_A_EVENT_INTERRUPT;
-		break;
-	case 1:
-		pipestat_reg = PIPEBSTAT;
-		interrupt = I915_DISPLAY_PIPE_B_EVENT_INTERRUPT;
-		break;
-	default:
-		DRM_ERROR("tried to disable vblank on non-existent pipe %d\n",
-			  pipe);
-		return;
-		break;
-	}
-
 	spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags);
-	i915_disable_irq(dev_priv, interrupt);
-	pipestat = I915_READ(pipestat_reg);
-	pipestat &= ~(PIPE_START_VBLANK_INTERRUPT_ENABLE |
-		      PIPE_VBLANK_INTERRUPT_ENABLE);
-	/* Clear any stale interrupt status */
-	pipestat |= (PIPE_START_VBLANK_INTERRUPT_STATUS |
-		     PIPE_VBLANK_INTERRUPT_STATUS);
-	I915_WRITE(pipestat_reg, pipestat);
-	(void) I915_READ(pipestat_reg);	/* Posting read */
+	i915_disable_pipestat(dev_priv, pipe,
+			      PIPE_VBLANK_INTERRUPT_ENABLE |
+			      PIPE_START_VBLANK_INTERRUPT_ENABLE);
 	spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags);
 }
 
@@ -696,123 +464,21 @@ int i915_vblank_pipe_get(struct drm_device *dev, void *data,
 int i915_vblank_swap(struct drm_device *dev, void *data,
 		     struct drm_file *file_priv)
 {
-	drm_i915_private_t *dev_priv = dev->dev_private;
-	drm_i915_vblank_swap_t *swap = data;
-	drm_i915_vbl_swap_t *vbl_swap, *vbl_old;
-	unsigned int pipe, seqtype, curseq;
-	unsigned long irqflags;
-	struct list_head *list;
-	int ret;
-
-	if (!dev_priv || !dev_priv->sarea_priv) {
-		DRM_ERROR("%s called with no initialization\n", __func__);
-		return -EINVAL;
-	}
-
-	if (dev_priv->sarea_priv->rotation) {
-		DRM_DEBUG("Rotation not supported\n");
-		return -EINVAL;
-	}
-
-	if (swap->seqtype & ~(_DRM_VBLANK_RELATIVE | _DRM_VBLANK_ABSOLUTE |
-			     _DRM_VBLANK_SECONDARY | _DRM_VBLANK_NEXTONMISS)) {
-		DRM_ERROR("Invalid sequence type 0x%x\n", swap->seqtype);
-		return -EINVAL;
-	}
-
-	pipe = (swap->seqtype & _DRM_VBLANK_SECONDARY) ? 1 : 0;
-
-	seqtype = swap->seqtype & (_DRM_VBLANK_RELATIVE | _DRM_VBLANK_ABSOLUTE);
-
-	if (!(dev_priv->vblank_pipe & (1 << pipe))) {
-		DRM_ERROR("Invalid pipe %d\n", pipe);
-		return -EINVAL;
-	}
-
-	spin_lock_irqsave(&dev->drw_lock, irqflags);
-
-	if (!drm_get_drawable_info(dev, swap->drawable)) {
-		spin_unlock_irqrestore(&dev->drw_lock, irqflags);
-		DRM_DEBUG("Invalid drawable ID %d\n", swap->drawable);
-		return -EINVAL;
-	}
-
-	spin_unlock_irqrestore(&dev->drw_lock, irqflags);
-
-	/*
-	 * We take the ref here and put it when the swap actually completes
-	 * in the tasklet.
+	/* The delayed swap mechanism was fundamentally racy, and has been
+	 * removed.  The model was that the client requested a delayed flip/swap
+	 * from the kernel, then waited for vblank before continuing to perform
+	 * rendering.  The problem was that the kernel might wake the client
+	 * up before it dispatched the vblank swap (since the lock has to be
+	 * held while touching the ringbuffer), in which case the client would
+	 * clear and start the next frame before the swap occurred, and
+	 * flicker would occur in addition to likely missing the vblank.
+	 *
+	 * In the absence of this ioctl, userland falls back to a correct path
+	 * of waiting for a vblank, then dispatching the swap on its own.
+	 * Context switching to userland and back is plenty fast enough for
+	 * meeting the requirements of vblank swapping.
 	 */
-	ret = drm_vblank_get(dev, pipe);
-	if (ret)
-		return ret;
-	curseq = drm_vblank_count(dev, pipe);
-
-	if (seqtype == _DRM_VBLANK_RELATIVE)
-		swap->sequence += curseq;
-
-	if ((curseq - swap->sequence) <= (1<<23)) {
-		if (swap->seqtype & _DRM_VBLANK_NEXTONMISS) {
-			swap->sequence = curseq + 1;
-		} else {
-			DRM_DEBUG("Missed target sequence\n");
-			drm_vblank_put(dev, pipe);
-			return -EINVAL;
-		}
-	}
-
-	vbl_swap = drm_calloc(1, sizeof(*vbl_swap), DRM_MEM_DRIVER);
-
-	if (!vbl_swap) {
-		DRM_ERROR("Failed to allocate memory to queue swap\n");
-		drm_vblank_put(dev, pipe);
-		return -ENOMEM;
-	}
-
-	vbl_swap->drw_id = swap->drawable;
-	vbl_swap->pipe = pipe;
-	vbl_swap->sequence = swap->sequence;
-
-	spin_lock_irqsave(&dev_priv->swaps_lock, irqflags);
-
-	list_for_each(list, &dev_priv->vbl_swaps.head) {
-		vbl_old = list_entry(list, drm_i915_vbl_swap_t, head);
-
-		if (vbl_old->drw_id == swap->drawable &&
-		    vbl_old->pipe == pipe &&
-		    vbl_old->sequence == swap->sequence) {
-			spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags);
-			drm_vblank_put(dev, pipe);
-			drm_free(vbl_swap, sizeof(*vbl_swap), DRM_MEM_DRIVER);
-			DRM_DEBUG("Already scheduled\n");
-			return 0;
-		}
-	}
-
-	if (dev_priv->swaps_pending >= 10) {
-		DRM_DEBUG("Too many swaps queued\n");
-		DRM_DEBUG(" pipe 0: %d pipe 1: %d\n",
-			  drm_vblank_count(dev, 0),
-			  drm_vblank_count(dev, 1));
-
-		list_for_each(list, &dev_priv->vbl_swaps.head) {
-			vbl_old = list_entry(list, drm_i915_vbl_swap_t, head);
-			DRM_DEBUG("\tdrw %x pipe %d seq %x\n",
-				  vbl_old->drw_id, vbl_old->pipe,
-				  vbl_old->sequence);
-		}
-		spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags);
-		drm_vblank_put(dev, pipe);
-		drm_free(vbl_swap, sizeof(*vbl_swap), DRM_MEM_DRIVER);
-		return -EBUSY;
-	}
-
-	list_add_tail(&vbl_swap->head, &dev_priv->vbl_swaps.head);
-	dev_priv->swaps_pending++;
-
-	spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags);
-
-	return 0;
+	return -EINVAL;
 }
 
 /* drm_dma.h hooks
@@ -822,37 +488,35 @@ void i915_driver_irq_preinstall(struct drm_device * dev)
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 
 	I915_WRITE(HWSTAM, 0xeffe);
+	I915_WRITE(PIPEASTAT, 0);
+	I915_WRITE(PIPEBSTAT, 0);
 	I915_WRITE(IMR, 0xffffffff);
 	I915_WRITE(IER, 0x0);
+	(void) I915_READ(IER);
 }
 
 int i915_driver_irq_postinstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
-	int ret, num_pipes = 2;
-
-	spin_lock_init(&dev_priv->swaps_lock);
-	INIT_LIST_HEAD(&dev_priv->vbl_swaps.head);
-	INIT_WORK(&dev_priv->vblank_work, i915_vblank_work_handler);
-	dev_priv->swaps_pending = 0;
-
-	/* Set initial unmasked IRQs to just the selected vblank pipes. */
-	dev_priv->irq_mask_reg = ~0;
-
-	ret = drm_vblank_init(dev, num_pipes);
-	if (ret)
-		return ret;
 
 	dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B;
-	dev_priv->irq_mask_reg &= ~I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT;
-	dev_priv->irq_mask_reg &= ~I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT;
 
 	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
 
-	dev_priv->irq_mask_reg &= I915_INTERRUPT_ENABLE_MASK;
+	/* Unmask the interrupts that we always want on. */
+	dev_priv->irq_mask_reg = ~I915_INTERRUPT_ENABLE_FIX;
+
+	dev_priv->pipestat[0] = 0;
+	dev_priv->pipestat[1] = 0;
+
+	/* Disable pipe interrupt enables, clear pending pipe status */
+	I915_WRITE(PIPEASTAT, I915_READ(PIPEASTAT) & 0x8000ffff);
+	I915_WRITE(PIPEBSTAT, I915_READ(PIPEBSTAT) & 0x8000ffff);
+	/* Clear pending interrupt status */
+	I915_WRITE(IIR, I915_READ(IIR));
 
-	I915_WRITE(IMR, dev_priv->irq_mask_reg);
 	I915_WRITE(IER, I915_INTERRUPT_ENABLE_MASK);
+	I915_WRITE(IMR, dev_priv->irq_mask_reg);
 	(void) I915_READ(IER);
 
 	opregion_enable_asle(dev);
@@ -864,7 +528,6 @@ int i915_driver_irq_postinstall(struct drm_device *dev)
 void i915_driver_irq_uninstall(struct drm_device * dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
-	u32 temp;
 
 	if (!dev_priv)
 		return;
@@ -872,13 +535,12 @@ void i915_driver_irq_uninstall(struct drm_device * dev)
 	dev_priv->vblank_pipe = 0;
 
 	I915_WRITE(HWSTAM, 0xffffffff);
+	I915_WRITE(PIPEASTAT, 0);
+	I915_WRITE(PIPEBSTAT, 0);
 	I915_WRITE(IMR, 0xffffffff);
 	I915_WRITE(IER, 0x0);
 
-	temp = I915_READ(PIPEASTAT);
-	I915_WRITE(PIPEASTAT, temp);
-	temp = I915_READ(PIPEBSTAT);
-	I915_WRITE(PIPEBSTAT, temp);
-	temp = I915_READ(IIR);
-	I915_WRITE(IIR, temp);
+	I915_WRITE(PIPEASTAT, I915_READ(PIPEASTAT) & 0x8000ffff);
+	I915_WRITE(PIPEBSTAT, I915_READ(PIPEBSTAT) & 0x8000ffff);
+	I915_WRITE(IIR, I915_READ(IIR));
 }
diff --git a/drivers/gpu/drm/i915/i915_opregion.c b/drivers/gpu/drm/i915/i915_opregion.c
index 1787a0c7e3a..13ae731a33d 100644
--- a/drivers/gpu/drm/i915/i915_opregion.c
+++ b/drivers/gpu/drm/i915/i915_opregion.c
@@ -235,17 +235,15 @@ void opregion_enable_asle(struct drm_device *dev)
 	struct opregion_asle *asle = dev_priv->opregion.asle;
 
 	if (asle) {
-		u32 pipeb_stats = I915_READ(PIPEBSTAT);
 		if (IS_MOBILE(dev)) {
-			/* Many devices trigger events with a write to the
-			   legacy backlight controller, so we need to ensure
-			   that it's able to generate interrupts */
-			I915_WRITE(PIPEBSTAT, pipeb_stats |=
-				   I915_LEGACY_BLC_EVENT_ENABLE);
-			i915_enable_irq(dev_priv, I915_ASLE_INTERRUPT |
-					I915_DISPLAY_PIPE_B_EVENT_INTERRUPT);
-		} else
-			i915_enable_irq(dev_priv, I915_ASLE_INTERRUPT);
+			unsigned long irqflags;
+
+			spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags);
+			i915_enable_pipestat(dev_priv, 1,
+					     I915_LEGACY_BLC_EVENT_ENABLE);
+			spin_unlock_irqrestore(&dev_priv->user_irq_lock,
+					       irqflags);
+		}
 
 		asle->tche = ASLE_ALS_EN | ASLE_BLC_EN | ASLE_PFIT_EN |
 			ASLE_PFMB_EN;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 5c2d9f206d0..9d24aaeb8a4 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -522,11 +522,15 @@
 #define DCC_ADDRESSING_MODE_DUAL_CHANNEL_INTERLEAVED	(2 << 0)
 #define DCC_ADDRESSING_MODE_MASK			(3 << 0)
 #define DCC_CHANNEL_XOR_DISABLE				(1 << 10)
+#define DCC_CHANNEL_XOR_BIT_17				(1 << 9)
 
 /** 965 MCH register controlling DRAM channel configuration */
 #define C0DRB3			0x10206
 #define C1DRB3			0x10606
 
+/** GM965 GM45 render standby register */
+#define MCHBAR_RENDER_STANDBY	0x111B8
+
 /*
  * Overlay regs
  */
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 603fe742ccd..5d84027ee8f 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -240,6 +240,13 @@ int i915_save_state(struct drm_device *dev)
 
 	pci_read_config_byte(dev->pdev, LBB, &dev_priv->saveLBB);
 
+	/* Render Standby */
+	if (IS_I965G(dev) && IS_MOBILE(dev))
+		dev_priv->saveRENDERSTANDBY = I915_READ(MCHBAR_RENDER_STANDBY);
+
+	/* Hardware status page */
+	dev_priv->saveHWS = I915_READ(HWS_PGA);
+
 	/* Display arbitration control */
 	dev_priv->saveDSPARB = I915_READ(DSPARB);
 
@@ -365,6 +372,14 @@ int i915_restore_state(struct drm_device *dev)
 
 	pci_write_config_byte(dev->pdev, LBB, dev_priv->saveLBB);
 
+	/* Render Standby */
+	if (IS_I965G(dev) && IS_MOBILE(dev))
+		I915_WRITE(MCHBAR_RENDER_STANDBY, dev_priv->saveRENDERSTANDBY);
+
+	/* Hardware status page */
+	I915_WRITE(HWS_PGA, dev_priv->saveHWS);
+
+	/* Display arbitration */
 	I915_WRITE(DSPARB, dev_priv->saveDSPARB);
 
 	/* Pipe & plane A info */
diff --git a/drivers/gpu/drm/mga/mga_dma.c b/drivers/gpu/drm/mga/mga_dma.c
index c1d12dbfa8d..b49c5ff2958 100644
--- a/drivers/gpu/drm/mga/mga_dma.c
+++ b/drivers/gpu/drm/mga/mga_dma.c
@@ -396,6 +396,7 @@ int mga_freelist_put(struct drm_device * dev, struct drm_buf * buf)
 int mga_driver_load(struct drm_device * dev, unsigned long flags)
 {
 	drm_mga_private_t *dev_priv;
+	int ret;
 
 	dev_priv = drm_alloc(sizeof(drm_mga_private_t), DRM_MEM_DRIVER);
 	if (!dev_priv)
@@ -415,6 +416,13 @@ int mga_driver_load(struct drm_device * dev, unsigned long flags)
 	dev->types[7] = _DRM_STAT_PRIMARY;
 	dev->types[8] = _DRM_STAT_SECONDARY;
 
+	ret = drm_vblank_init(dev, 1);
+
+	if (ret) {
+		(void) mga_driver_unload(dev);
+		return ret;
+	}
+
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/mga/mga_irq.c b/drivers/gpu/drm/mga/mga_irq.c
index bab42f41188..daa6041a483 100644
--- a/drivers/gpu/drm/mga/mga_irq.c
+++ b/drivers/gpu/drm/mga/mga_irq.c
@@ -152,11 +152,6 @@ void mga_driver_irq_preinstall(struct drm_device * dev)
 int mga_driver_irq_postinstall(struct drm_device *dev)
 {
 	drm_mga_private_t *dev_priv = (drm_mga_private_t *) dev->dev_private;
-	int ret;
-
-	ret = drm_vblank_init(dev, 1);
-	if (ret)
-		return ret;
 
 	DRM_INIT_WAITQUEUE(&dev_priv->fence_queue);
 
diff --git a/drivers/gpu/drm/r128/r128_drv.c b/drivers/gpu/drm/r128/r128_drv.c
index 3265d53ba91..601f4c0e5da 100644
--- a/drivers/gpu/drm/r128/r128_drv.c
+++ b/drivers/gpu/drm/r128/r128_drv.c
@@ -45,6 +45,7 @@ static struct drm_driver driver = {
 	    DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
 	    DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
 	.dev_priv_size = sizeof(drm_r128_buf_priv_t),
+	.load = r128_driver_load,
 	.preclose = r128_driver_preclose,
 	.lastclose = r128_driver_lastclose,
 	.get_vblank_counter = r128_get_vblank_counter,
@@ -84,6 +85,11 @@ static struct drm_driver driver = {
 	.patchlevel = DRIVER_PATCHLEVEL,
 };
 
+int r128_driver_load(struct drm_device * dev, unsigned long flags)
+{
+	return drm_vblank_init(dev, 1);
+}
+
 static int __init r128_init(void)
 {
 	driver.num_ioctls = r128_max_ioctl;
diff --git a/drivers/gpu/drm/r128/r128_drv.h b/drivers/gpu/drm/r128/r128_drv.h
index 5898b274279..797a26c42da 100644
--- a/drivers/gpu/drm/r128/r128_drv.h
+++ b/drivers/gpu/drm/r128/r128_drv.h
@@ -159,6 +159,7 @@ extern void r128_driver_irq_preinstall(struct drm_device * dev);
 extern int r128_driver_irq_postinstall(struct drm_device *dev);
 extern void r128_driver_irq_uninstall(struct drm_device * dev);
 extern void r128_driver_lastclose(struct drm_device * dev);
+extern int r128_driver_load(struct drm_device * dev, unsigned long flags);
 extern void r128_driver_preclose(struct drm_device * dev,
 				 struct drm_file *file_priv);
 
diff --git a/drivers/gpu/drm/r128/r128_irq.c b/drivers/gpu/drm/r128/r128_irq.c
index d7349012a68..69810fb8ac4 100644
--- a/drivers/gpu/drm/r128/r128_irq.c
+++ b/drivers/gpu/drm/r128/r128_irq.c
@@ -102,7 +102,7 @@ void r128_driver_irq_preinstall(struct drm_device * dev)
 
 int r128_driver_irq_postinstall(struct drm_device *dev)
 {
-	return drm_vblank_init(dev, 1);
+	return 0;
 }
 
 void r128_driver_irq_uninstall(struct drm_device * dev)
diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index 59a2132a8f5..dcebb4bee7a 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -653,15 +653,16 @@ static void radeon_cp_init_ring_buffer(struct drm_device * dev,
 	RADEON_WRITE(RADEON_SCRATCH_UMSK, 0x7);
 
 	/* Turn on bus mastering */
-	if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS400) ||
-	    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
+	if (((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS690) ||
 	    ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS740)) {
-		/* rs400, rs690/rs740 */
-		tmp = RADEON_READ(RADEON_BUS_CNTL) & ~RS400_BUS_MASTER_DIS;
+		/* rs600/rs690/rs740 */
+		tmp = RADEON_READ(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;
 		RADEON_WRITE(RADEON_BUS_CNTL, tmp);
-	} else if (!(((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RV380) ||
-		    ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R423))) {
-		/* r1xx, r2xx, r300, r(v)350, r420/r481, rs480 */
+	} else if (((dev_priv->flags & RADEON_FAMILY_MASK) <= CHIP_RV350) ||
+		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_R420) ||
+		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS400) ||
+		   ((dev_priv->flags & RADEON_FAMILY_MASK) == CHIP_RS480)) {
+		/* r1xx, r2xx, r300, r(v)350, r420/r481, rs400/rs480 */
 		tmp = RADEON_READ(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
 		RADEON_WRITE(RADEON_BUS_CNTL, tmp);
 	} /* PCIE cards appears to not need this */
@@ -1750,6 +1751,18 @@ int radeon_driver_load(struct drm_device *dev, unsigned long flags)
 	else
 		dev_priv->flags |= RADEON_IS_PCI;
 
+	ret = drm_addmap(dev, drm_get_resource_start(dev, 2),
+			 drm_get_resource_len(dev, 2), _DRM_REGISTERS,
+			 _DRM_READ_ONLY | _DRM_DRIVER, &dev_priv->mmio);
+	if (ret != 0)
+		return ret;
+
+	ret = drm_vblank_init(dev, 2);
+	if (ret) {
+		radeon_driver_unload(dev);
+		return ret;
+	}
+
 	DRM_DEBUG("%s card detected\n",
 		  ((dev_priv->flags & RADEON_IS_AGP) ? "AGP" : (((dev_priv->flags & RADEON_IS_PCIE) ? "PCIE" : "PCI"))));
 	return ret;
@@ -1766,12 +1779,6 @@ int radeon_driver_firstopen(struct drm_device *dev)
 
 	dev_priv->gart_info.table_size = RADEON_PCIGART_TABLE_SIZE;
 
-	ret = drm_addmap(dev, drm_get_resource_start(dev, 2),
-			 drm_get_resource_len(dev, 2), _DRM_REGISTERS,
-			 _DRM_READ_ONLY, &dev_priv->mmio);
-	if (ret != 0)
-		return ret;
-
 	dev_priv->fb_aper_offset = drm_get_resource_start(dev, 0);
 	ret = drm_addmap(dev, dev_priv->fb_aper_offset,
 			 drm_get_resource_len(dev, 0), _DRM_FRAME_BUFFER,
@@ -1787,6 +1794,9 @@ int radeon_driver_unload(struct drm_device *dev)
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 
 	DRM_DEBUG("\n");
+
+	drm_rmmap(dev, dev_priv->mmio);
+
 	drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
 
 	dev->dev_private = NULL;
diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h
index 4dbb813910c..3bbb871b25d 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.h
+++ b/drivers/gpu/drm/radeon/radeon_drv.h
@@ -287,7 +287,6 @@ typedef struct drm_radeon_private {
 	unsigned long gart_textures_offset;
 
 	drm_local_map_t *sarea;
-	drm_local_map_t *mmio;
 	drm_local_map_t *cp_ring;
 	drm_local_map_t *ring_rptr;
 	drm_local_map_t *gart_textures;
@@ -300,7 +299,6 @@ typedef struct drm_radeon_private {
 	atomic_t swi_emitted;
 	int vblank_crtc;
 	uint32_t irq_enable_reg;
-	int irq_enabled;
 	uint32_t r500_disp_irq_reg;
 
 	struct radeon_surface surfaces[RADEON_MAX_SURFACES];
@@ -318,6 +316,7 @@ typedef struct drm_radeon_private {
 
 	int num_gb_pipes;
 	int track_flush;
+	drm_local_map_t *mmio;
 } drm_radeon_private_t;
 
 typedef struct drm_radeon_buf_priv {
@@ -447,12 +446,12 @@ extern int r300_do_cp_cmdbuf(struct drm_device *dev,
  * handling, not bus mastering itself.
  */
 #define RADEON_BUS_CNTL			0x0030
-/* r1xx, r2xx, r300, r(v)350, r420/r481, rs480 */
+/* r1xx, r2xx, r300, r(v)350, r420/r481, rs400/rs480 */
 #	define RADEON_BUS_MASTER_DIS		(1 << 6)
-/* rs400, rs690/rs740 */
-#	define RS400_BUS_MASTER_DIS		(1 << 14)
-#	define RS400_MSI_REARM		        (1 << 20)
-/* see RS480_MSI_REARM in AIC_CNTL for rs480 */
+/* rs600/rs690/rs740 */
+#	define RS600_BUS_MASTER_DIS		(1 << 14)
+#	define RS600_MSI_REARM		        (1 << 20)
+/* see RS400_MSI_REARM in AIC_CNTL for rs480 */
 
 #define RADEON_BUS_CNTL1		0x0034
 #	define RADEON_PMI_BM_DIS		(1 << 2)
@@ -937,7 +936,7 @@ extern int r300_do_cp_cmdbuf(struct drm_device *dev,
 
 #define RADEON_AIC_CNTL			0x01d0
 #	define RADEON_PCIGART_TRANSLATE_EN	(1 << 0)
-#	define RS480_MSI_REARM	                (1 << 3)
+#	define RS400_MSI_REARM	                (1 << 3)
 #define RADEON_AIC_STAT			0x01d4
 #define RADEON_AIC_PT_BASE		0x01d8
 #define RADEON_AIC_LO_ADDR		0x01dc
diff --git a/drivers/gpu/drm/radeon/radeon_irq.c b/drivers/gpu/drm/radeon/radeon_irq.c
index 5079f7054a2..99be11418ac 100644
--- a/drivers/gpu/drm/radeon/radeon_irq.c
+++ b/drivers/gpu/drm/radeon/radeon_irq.c
@@ -44,7 +44,8 @@ void radeon_irq_set_state(struct drm_device *dev, u32 mask, int state)
 	else
 		dev_priv->irq_enable_reg &= ~mask;
 
-	RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
+	if (!dev->irq_enabled)
+		RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
 }
 
 static void r500_vbl_irq_set_state(struct drm_device *dev, u32 mask, int state)
@@ -56,7 +57,8 @@ static void r500_vbl_irq_set_state(struct drm_device *dev, u32 mask, int state)
 	else
 		dev_priv->r500_disp_irq_reg &= ~mask;
 
-	RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
+	if (!dev->irq_enabled)
+		RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
 }
 
 int radeon_enable_vblank(struct drm_device *dev, int crtc)
@@ -337,15 +339,10 @@ int radeon_driver_irq_postinstall(struct drm_device *dev)
 {
 	drm_radeon_private_t *dev_priv =
 	    (drm_radeon_private_t *) dev->dev_private;
-	int ret;
 
 	atomic_set(&dev_priv->swi_emitted, 0);
 	DRM_INIT_WAITQUEUE(&dev_priv->swi_queue);
 
-	ret = drm_vblank_init(dev, 2);
-	if (ret)
-		return ret;
-
 	dev->max_vblank_count = 0x001fffff;
 
 	radeon_irq_set_state(dev, RADEON_SW_INT_ENABLE, 1);
@@ -360,8 +357,6 @@ void radeon_driver_irq_uninstall(struct drm_device * dev)
 	if (!dev_priv)
 		return;
 
-	dev_priv->irq_enabled = 0;
-
 	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS690)
 		RADEON_WRITE(R500_DxMODE_INT_MASK, 0);
 	/* Disable *all* interrupts */
diff --git a/drivers/gpu/drm/via/via_irq.c b/drivers/gpu/drm/via/via_irq.c
index 665d319b927..c248c1d3726 100644
--- a/drivers/gpu/drm/via/via_irq.c
+++ b/drivers/gpu/drm/via/via_irq.c
@@ -314,7 +314,6 @@ int via_driver_irq_postinstall(struct drm_device *dev)
 	if (!dev_priv)
 		return -EINVAL;
 
-	drm_vblank_init(dev, 1);
 	status = VIA_READ(VIA_REG_INTERRUPT);
 	VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
 		  | dev_priv->irq_enable_mask);
diff --git a/drivers/gpu/drm/via/via_map.c b/drivers/gpu/drm/via/via_map.c
index a967556be01..2c4f0b48579 100644
--- a/drivers/gpu/drm/via/via_map.c
+++ b/drivers/gpu/drm/via/via_map.c
@@ -107,8 +107,17 @@ int via_driver_load(struct drm_device *dev, unsigned long chipset)
 	ret = drm_sman_init(&dev_priv->sman, 2, 12, 8);
 	if (ret) {
 		drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
+		return ret;
 	}
-	return ret;
+
+	ret = drm_vblank_init(dev, 1);
+	if (ret) {
+		drm_sman_takedown(&dev_priv->sman);
+		drm_free(dev_priv, sizeof(drm_via_private_t), DRM_MEM_DRIVER);
+		return ret;
+	}
+
+	return 0;
 }
 
 int via_driver_unload(struct drm_device *dev)