[Intel-gfx] [PATCH 1/1] drm/i915/pxp: Add missing tag for Wa_14019159160

[Alan Previn]

Add missing tag for "Wa_14019159160 - Case 2" (for existing
PXP code that ensures run alone mode bit is set to allow
PxP-decryption.

Signed-off-by: Alan Previn <alan.previn.teres.alexis at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 7c367ba8d9dc..c758fe4906a5 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -863,8 +863,10 @@ static bool ctx_needs_runalone(const struct intel_context *ce)
 	bool ctx_is_protected = false;
 
 	/*
+	 * Wa_140191591606 - Case 2: mtl
 	 * On MTL and newer platforms, protected contexts require setting
-	 * the LRC run-alone bit or else the encryption will not happen.
+	 * the LRC run-alone bit or else the encryption/decryption will not happen.
+	 * NOTE: Case 2 only applies to PXP use-case of said workaround.
 	 */
 	if (GRAPHICS_VER_FULL(ce->engine->i915) >= IP_VER(12, 70) &&
 	    (ce->engine->class == COMPUTE_CLASS || ce->engine->class == RENDER_CLASS)) {

base-commit: dbdb47c227dc21b7bf98ada039bf42aac4b58b8b
-- 
2.39.0