drm/i915/gen8: Add WaClearSlmSpaceAtContextSwitch workaround

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In Indirect context w/a batch buffer,
WaClearSlmSpaceAtContextSwitch

This WA performs writes to scratch page so it must be valid, this check
is performed before initializing the batch with this WA.

v2: s/PIPE_CONTROL_FLUSH_RO_CACHES/PIPE_CONTROL_FLUSH_L3 (Ville)

v3: GTT bit in scratch address should be mbz (Chris)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Gordon <david.s.gordon@intel.com>
Signed-off-by: Rafael Barbalho <rafael.barbalho@intel.com>
Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

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Arun Siluvery 2015-06-23 15:46:57 +01:00 • committed by Daniel Vetter

parent 9fb73863cc

commit 0160f05539

2 changed files with 16 additions and 0 deletions

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1

drivers/gpu/drm/i915/i915_reg.h

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15

drivers/gpu/drm/i915/intel_lrc.c

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