[Intel-gfx] [PATCH V3 7/8] drm/i915/gt: Initialize L3CC table in mocs init

[Ayaz A Siddiqui <ayaz.siddiqui@intel.com>]

From: Sreedhar Telukuntla <sreedhar.telukuntla@intel.com>

Initialize the L3CC table as part of mocs initalization to program
LNCFCMOCSx registers, so that the mocs settings are available for
selection for subsequent memory transactions in driver load path.

Signed-off-by: Sreedhar Telukuntla <sreedhar.telukuntla@intel.com>
Signed-off-by: Ayaz A Siddiqui <ayaz.siddiqui@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_mocs.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_mocs.c b/drivers/gpu/drm/i915/gt/intel_mocs.c
index 577a78dfedf99..405374f1d8ed2 100644
--- a/drivers/gpu/drm/i915/gt/intel_mocs.c
+++ b/drivers/gpu/drm/i915/gt/intel_mocs.c
@@ -717,10 +717,9 @@ static u32 l3cc_combine(u16 low, u16 high)
 	     0; \
 	     i++)
 
-static void init_l3cc_table(struct intel_engine_cs *engine,
+static void init_l3cc_table(struct intel_uncore *uncore,
 			    const struct drm_i915_mocs_table *table)
 {
-	struct intel_uncore *uncore = engine->uncore;
 	unsigned int i;
 	u32 l3cc;
 
@@ -746,7 +745,7 @@ void intel_mocs_init_engine(struct intel_engine_cs *engine)
 		init_mocs_table(engine, &table);
 
 	if (flags & HAS_RENDER_L3CC && engine->class == RENDER_CLASS)
-		init_l3cc_table(engine, &table);
+		init_l3cc_table(engine->uncore, &table);
 
 	aux = build_aux_regs(engine, &table);
 	apply_aux_regs_engine(engine, aux);
@@ -776,6 +775,14 @@ void intel_mocs_init(struct intel_gt *gt)
 	if (flags & HAS_GLOBAL_MOCS)
 		__init_mocs_table(gt->uncore, &table, global_mocs_offset());
 	set_mocs_index(gt, &table);
+
+	/*
+	 * Initialize the L3CC table as part of mocs initalization to make
+	 * sure the LNCFCMOCSx registers are programmed for the subsequent
+	 * memory transactions including guc transactions
+	 */
+	if (flags & HAS_RENDER_L3CC)
+		init_l3cc_table(gt->uncore, &table);
 }
 
 #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
-- 
2.26.2