drm/i915: Verify GT workaround state after GPU init
authorTvrtko Ursulin <tvrtko.ursulin@intel.com>
Mon, 3 Dec 2018 12:50:10 +0000 (12:50 +0000)
committerTvrtko Ursulin <tvrtko.ursulin@intel.com>
Tue, 4 Dec 2018 12:23:18 +0000 (12:23 +0000)
commit094304beb4e1f4bfb2b59385a12d7074f4485e98
tree02b5510415474bde8e6ff0dcab4d1b5c05ffe27d
parent4a15c75c42460252a63d30f03b4766a52945fb47
drm/i915: Verify GT workaround state after GPU init

Since we now have all the GT workarounds in a table, by adding a simple
shared helper function we can now verify that their values are still
applied after some interesting events in the lifetime of the driver.

Initially we only do this after GPU initialization.

v2:
 Chris Wilson:
 * Simplify verification by realizing it's a simple xor and and.
 * Remove verification from engine reset path.
 * Return bool straight away from the verify API.

v3:
 * API rename. (Chris Wilson)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20181203125014.3219-4-tvrtko.ursulin@linux.intel.com
drivers/gpu/drm/i915/i915_drv.c
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/intel_workarounds.c
drivers/gpu/drm/i915/intel_workarounds.h