drm/i915/gt: Use caller provided forcewake for intel_mocs_init_engine

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During post-reset resume, we call intel_mocs_init_engine to reinitialise
the MOCS registers. Suprisingly, especially when enhanced by lockdep,
the acquisition of the forcewake lock around each register write takes a
substantial portion of the reset time. We don't need to use the
individual forcewake here as we can assume that the caller is holding a
blanket forcewake for the reset&resume and the resume is serialised.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190703155225.9501-2-chris@chris-wilson.co.uk

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Chris Wilson 2019-07-03 16:52:23 +01:00

parent b7dc9395c5

commit 56e0f78e47

1 changed files with 9 additions and 6 deletions

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drivers/gpu/drm/i915/gt/intel_mocs.c

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