Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-intel-fixes

From Daniel Vetter:

"A few patches for 3.4, major part is 3 regression fixes:
- ppgtt broke hibernate on snb/ivb. Somehow our QA claims that it still
 works, which is why this has not been caught earlier.
- ppgtt flails in combination with dmar. I kinda expected this one :(
- fence handling bugfix for gen2/3. Iirc this one is about a year old, fix
 curtesy Chris Wilson. I've created an shockingly simple i-g-t test to
 catch this in the future.

Wrt regressions I've just got a report that gmbus (newly enabled again in
3.4) is a bit noisy. I'm looking into this atm.

Also included are the rc6 enable patches for snb from Eugeni. I wanted to
include these in the main 3.4 pull but screwed it up. Please hit me. Imo
these kind of patches really should go in before -rc1, but in thise case
rc6 has brought us tons of press and guinea pigs^W^W testers and ubuntu is
already running with it. So I estimate a pretty small chance for this to
blow up.

And some smaller things:
- two minor locking snafus
- server gt2 ivb pciid
- 2 patches to sanitize the register state left behind by the bios some
 more
- 2 new quirk entries
- cs readback trick against missed IRQs from ivb also enabled on snb
- sprite fix from Jesse"

* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: treat src w & h as fixed point in sprite handling code
  drm/i915: no-lvds quirk on MSI DC500
  drm/i915: Add lock on drm_helper_resume_force_mode
  drm/i915: don't leak struct_mutex lock on ppgtt init failures
  drm/i915: disable ppgtt on snb when dmar is enabled
  drm/i915: add Ivy Bridge GT2 Server entries
  drm/i915: properly clear SSC1 bit in the pch refclock init code
  drm/i915: apply CS reg readback trick against missed IRQ on snb
  drm/i915: quirk away broken OpRegion VBT
  drm/i915: enable plain RC6 on Sandy Bridge by default
  drm/i915: allow to select rc6 modes via kernel parameter
  drm/i915: Mark untiled BLT commands as fenced on gen2/3
  drm/i915: properly restore the ppgtt page directory on resume
  drm/i915: Sanitize BIOS debugging bits from PIPECONF

1 files changed, 4 insertions, 0 deletions

diff --git a/include/drm/intel-gtt.h b/include/drm/intel-gtt.h
index 0a0001b9dc78..923afb5dcf0c 100644
--- a/include/drm/intel-gtt.h
+++ b/include/drm/intel-gtt.h
@@ -44,4 +44,8 @@ void intel_gtt_insert_pages(unsigned int first_entry, unsigned int num_entries,
 /* flag for GFDT type */
 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
 
+#ifdef CONFIG_INTEL_IOMMU
+extern int intel_iommu_gfx_mapped;
+#endif
+
 #endif