---

yaml --- r: 65196 b: refs/heads/master c: cdfef17 h: refs/heads/master v: v3
git-mirror · Sep 28, 2007 · 485e8fc · 485e8fc
1 parent 472d313
commit 485e8fc
Show file tree

Hide file tree

Showing 3 changed files with 19 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7d809ba3f98b8aa8f9ba0dcdf6349958a0b77b7b
+refs/heads/master: cdfef17d93b35a6d583509945e699ee998abce24
diff --git a/trunk/drivers/char/drm/i915_drv.h b/trunk/drivers/char/drm/i915_drv.h
@@ -210,6 +210,12 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
 #define I915REG_INT_MASK_R 	0x020a8
 #define I915REG_INT_ENABLE_R	0x020a0
 
+#define I915REG_PIPEASTAT	0x70024
+#define I915REG_PIPEBSTAT	0x71024
+
+#define I915_VBLANK_INTERRUPT_ENABLE	(1UL<<17)
+#define I915_VBLANK_CLEAR		(1UL<<1)
+
 #define SRX_INDEX		0x3c4
 #define SRX_DATA		0x3c5
 #define SR01			1

diff --git a/trunk/drivers/char/drm/i915_irq.c b/trunk/drivers/char/drm/i915_irq.c
@@ -214,6 +214,10 @@ 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;
 	u16 temp;
+	u32 pipea_stats, pipeb_stats;
+
+	pipea_stats = I915_READ(I915REG_PIPEASTAT);
+	pipeb_stats = I915_READ(I915REG_PIPEBSTAT);
 
 	temp = I915_READ16(I915REG_INT_IDENTITY_R);
 
@@ -225,6 +229,8 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
 		return IRQ_NONE;
 
 	I915_WRITE16(I915REG_INT_IDENTITY_R, temp);
+	(void) I915_READ16(I915REG_INT_IDENTITY_R);
+	DRM_READMEMORYBARRIER();
 
 	dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 
@@ -252,6 +258,12 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
 
 		if (dev_priv->swaps_pending > 0)
 			drm_locked_tasklet(dev, i915_vblank_tasklet);
+		I915_WRITE(I915REG_PIPEASTAT,
+			pipea_stats|I915_VBLANK_INTERRUPT_ENABLE|
+			I915_VBLANK_CLEAR);
+		I915_WRITE(I915REG_PIPEBSTAT,
+			pipeb_stats|I915_VBLANK_INTERRUPT_ENABLE|
+			I915_VBLANK_CLEAR);
 	}
 
 	return IRQ_HANDLED;