Merge tag 'v3.7-rc2' into drm-intel-next-queued

Linux 3.7-rc2

Backmerge to solve two ugly conflicts:
- uapi. We've already added new ioctl definitions for -next. Do I need to say more?
- wc support gtt ptes. We've had to revert this for snb+ for 3.7 and
  also fix a few other things in the code. Now we know how to make it
  work on snb+, but to avoid losing the other fixes do the backmerge
  first before re-enabling wc gtt ptes on snb+.

And a few other minor things, among them git getting confused in
intel_dp.c and seemingly causing a conflict out of nothing ...

Conflicts:
	drivers/gpu/drm/i915/i915_reg.h
	drivers/gpu/drm/i915/intel_display.c
	drivers/gpu/drm/i915/intel_dp.c
	drivers/gpu/drm/i915/intel_modes.c
	include/drm/i915_drm.h

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_pm.c

@@ -2728,7 +2728,7 @@ static const struct cparams {
 	{ 0, 800, 231, 23784 },
 };
 
-unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
+static unsigned long __i915_chipset_val(struct drm_i915_private *dev_priv)
 {
 	u64 total_count, diff, ret;
 	u32 count1, count2, count3, m = 0, c = 0;
@@ -2782,6 +2782,22 @@ unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
 	return ret;
 }
 
+unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
+{
+	unsigned long val;
+
+	if (dev_priv->info->gen != 5)
+		return 0;
+
+	spin_lock_irq(&mchdev_lock);
+
+	val = __i915_chipset_val(dev_priv);
+
+	spin_unlock_irq(&mchdev_lock);
+
+	return val;
+}
+
 unsigned long i915_mch_val(struct drm_i915_private *dev_priv)
 {
 	unsigned long m, x, b;
@@ -2985,7 +3001,7 @@ void i915_update_gfx_val(struct drm_i915_private *dev_priv)
 	spin_unlock_irq(&mchdev_lock);
 }
 
-unsigned long i915_gfx_val(struct drm_i915_private *dev_priv)
+static unsigned long __i915_gfx_val(struct drm_i915_private *dev_priv)
 {
 	unsigned long t, corr, state1, corr2, state2;
 	u32 pxvid, ext_v;
@@ -3022,6 +3038,22 @@ unsigned long i915_gfx_val(struct drm_i915_private *dev_priv)
 	return dev_priv->ips.gfx_power + state2;
 }
 
+unsigned long i915_gfx_val(struct drm_i915_private *dev_priv)
+{
+	unsigned long val;
+
+	if (dev_priv->info->gen != 5)
+		return 0;
+
+	spin_lock_irq(&mchdev_lock);
+
+	val = __i915_gfx_val(dev_priv);
+
+	spin_unlock_irq(&mchdev_lock);
+
+	return val;
+}
+
 /**
  * i915_read_mch_val - return value for IPS use
  *
@@ -3038,8 +3070,8 @@ unsigned long i915_read_mch_val(void)
 		goto out_unlock;
 	dev_priv = i915_mch_dev;
 
-	chipset_val = i915_chipset_val(dev_priv);
-	graphics_val = i915_gfx_val(dev_priv);
+	chipset_val = __i915_chipset_val(dev_priv);
+	graphics_val = __i915_gfx_val(dev_priv);
 
 	ret = chipset_val + graphics_val;
 
@@ -3395,8 +3427,8 @@ static void gen6_init_clock_gating(struct drm_device *dev)
 		   GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
 
 	/* Bspec says we need to always set all mask bits. */
-	I915_WRITE(_3D_CHICKEN, (0xFFFF << 16) |
-		   _3D_CHICKEN_SF_DISABLE_FASTCLIP_CULL);
+	I915_WRITE(_3D_CHICKEN3, (0xFFFF << 16) |
+		   _3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL);
 
 	/*
 	 * According to the spec the following bits should be
@@ -3427,6 +3459,11 @@ static void gen6_init_clock_gating(struct drm_device *dev)
 			   DISPPLANE_TRICKLE_FEED_DISABLE);
 		intel_flush_display_plane(dev_priv, pipe);
 	}
+
+	/* The default value should be 0x200 according to docs, but the two
+	 * platforms I checked have a 0 for this. (Maybe BIOS overrides?) */
+	I915_WRITE(GEN6_GT_MODE, _MASKED_BIT_DISABLE(0xffff));
+	I915_WRITE(GEN6_GT_MODE, _MASKED_BIT_ENABLE(GEN6_GT_MODE_HI));
 }
 
 static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv)