drm/i915/guc: Handle save/restore of MCR registers explicitly

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MCR registers can be placed on the GuC's save/restore list, but at the
moment they are always handled in a multicast manner (i.e., the GuC
reads one instance to save the value and then does a multicast write to
restore that single value to all instances).  In the future the GuC will
probably give us an alternate interface to do unicast per-instance
save/restore operations, so we should be very clear about which
registers on the list are MCR registers (and in the future which
save/restore behavior we want for them).

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221014230239.1023689-11-matthew.d.roper@intel.com

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Matt Roper 2022-10-14 16:02:35 -07:00

parent 46c507f03a

commit cf35f6afb9

1 changed files with 34 additions and 21 deletions

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drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c

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