[Intel-gfx] [PATCH 0/4] drm/i915: gen3/4 GPU reset stuff

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

I went ahead and quckly fixed the GPU reset for my 946gz. I had to add
a bit of code to restore the display side since that too gets clobbered.

I then noticed that according to the specs gen3 should work with the exact
same code, so I added the missing bits. g33 is slightly special, but should
be close enough. The spec says we should turn off all planes before the
reset on g33, but so far I didn't implement that part.

Tested with simulated hangs on my 946gz. Would be mildly intersting to
see how it fares on other machines, but alas I have none.

Ville Syrjälä (4):
  drm/i915: Fix gen4 GPU reset
  drm/i915: Restore the display config after a GPU reset on gen4
  drm/i915: Implement GPU reset for 915/945
  drm/i915: Implement GPU reset for g33

 drivers/gpu/drm/i915/i915_drv.c     |  8 +++++
 drivers/gpu/drm/i915/i915_reg.h     |  3 +-
 drivers/gpu/drm/i915/intel_uncore.c | 60 ++++++++++++++++++-------------------
 3 files changed, 40 insertions(+), 31 deletions(-)

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1.8.5.5