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drm/i915/gt: Ensure memory quiesced before invalidation

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[ Upstream commit 78a6ccd65f ]

All memory traffic must be quiesced before requesting
an aux invalidation on platforms that use Aux CCS.

Fixes: 972282c4cf ("drm/i915/gen12: Add aux table invalidate for all engines")
Requires: a2a4aa0eef3b ("drm/i915: Add the gen12_needs_ccs_aux_inv helper")
Signed-off-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.8+
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230725001950.1014671-4-andi.shyti@linux.intel.com
(cherry picked from commit ad8ebf1221)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jonathan Cavitt
2023-07-25 02:19:46 +02:00
committed by Greg Kroah-Hartman
parent c23126f2c7
commit 017d440431
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/i915/gt/gen8_engine_cs.c
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@@ -193,7 +193,11 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
{
struct intel_engine_cs *engine = rq->engine;
if (mode & EMIT_FLUSH) {
/*
* On Aux CCS platforms the invalidation of the Aux
* table requires quiescing memory traffic beforehand
*/
if (mode & EMIT_FLUSH || gen12_needs_ccs_aux_inv(engine)) {
u32 flags = 0;
u32 *cs;