Merge branch 'drm-intel-fixes' of ssh://master.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel

* 'drm-intel-fixes' of ssh://master.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel: (37 commits)
  drm/i915/execbuffer: Reorder binding of objects to favour restrictions
  drm/i915: If we hit OOM when allocating GTT pages, clear the aperture
  drm/i915/evict: Ensure we completely cleanup on failure
  drm/i915/execbuffer: Correctly clear the current object list upon EFAULT
  drm/i915/debugfs: Show all objects in the gtt
  drm/i915: Record AGP memory type upon error
  drm/i915: Periodically flush the active lists and requests
  drm/i915/gtt: Unmap the PCI pages after unbinding them from the GTT
  drm/i915: Record the error batchbuffer on each ring
  drm/i915: Include TLB miss overhead for computing WM
  drm/i915: Propagate error from flushing the ring
  drm/i915: detect & report PCH display error interrupts
  drm/i915: cleanup rc6 code
  drm/i915: fix rc6 enabling around suspend/resume
  drm/i915: re-enable rc6 support for Ironlake+
  drm/i915: Make the ring IMR handling private
  drm/i915/ringbuffer: Simplify the ring irq refcounting
  drm/i915/debugfs: Show the per-ring IMR
  drm/i915: Mask USER interrupts on gen6 (until required)
  drm/i915: Handle ringbuffer stalls when flushing
  ...

2 files changed, 11 insertions, 0 deletions

diff --git a/drivers/char/agp/intel-agp.h b/drivers/char/agp/intel-agp.h
index 010e3defd6c3..c195bfeade11 100644
--- a/drivers/char/agp/intel-agp.h
+++ b/drivers/char/agp/intel-agp.h
@@ -94,6 +94,8 @@
 #define G4x_GMCH_SIZE_VT_1_5M   (0xa << 8)
 #define G4x_GMCH_SIZE_VT_2M     (0xc << 8)
 
+#define GFX_FLSH_CNTL           0x2170 /* 915+ */
+
 #define I810_DRAM_CTL           0x3000
 #define I810_DRAM_ROW_0         0x00000001
 #define I810_DRAM_ROW_0_SDRAM   0x00000001
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 356f73e0d17e..da8161806f39 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -814,6 +814,12 @@ static bool intel_enable_gtt(void)
                 }
         }
 
+        /* On the resume path we may be adjusting the PGTBL value, so
+         * be paranoid and flush all chipset write buffers...
+         */
+        if (INTEL_GTT_GEN >= 3)
+                writel(0, intel_private.registers+GFX_FLSH_CNTL);
+
         reg = intel_private.registers+I810_PGETBL_CTL;
         writel(intel_private.PGETBL_save, reg);
         if (HAS_PGTBL_EN && (readl(reg) & I810_PGETBL_ENABLED) == 0) {
@@ -823,6 +829,9 @@ static bool intel_enable_gtt(void)
                 return false;
         }
 
+        if (INTEL_GTT_GEN >= 3)
+                writel(0, intel_private.registers+GFX_FLSH_CNTL);
+
         return true;
 }