From fb1e95bc2755dd29625c6ba7d553284112761f88 Mon Sep 17 00:00:00 2001 From: Sreedhar Telukuntla Date: Fri, 3 Sep 2021 14:51:53 +0530 Subject: [PATCH] drm/i915/gt: Initialize L3CC table in mocs init Initialize the L3CC table as part of mocs initialization to program LNCFCMOCSx registers so that the mocs settings are available for selection for subsequent memory transactions in the driver load path. We need to keep L3CC initialization in intel_mocs_init_engine() also so that in execlists submission, these registers can be rewritten during engine reset. Reviewed-by: Matt Roper Signed-off-by: Sreedhar Telukuntla Signed-off-by: Ayaz A Siddiqui Signed-off-by: Ramalingam C Link: https://patchwork.freedesktop.org/patch/msgid/20210903092153.535736-6-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 552bfd1c113b1..e96afd7beb499 100644 --- a/drivers/gpu/drm/i915/gt/intel_mocs.c +++ b/drivers/gpu/drm/i915/gt/intel_mocs.c @@ -481,10 +481,9 @@ 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; @@ -509,7 +508,7 @@ 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); } static u32 global_mocs_offset(void) @@ -536,6 +535,14 @@ void intel_mocs_init(struct intel_gt *gt) flags = get_mocs_settings(gt->i915, &table); if (flags & HAS_GLOBAL_MOCS) __init_mocs_table(gt->uncore, &table, global_mocs_offset()); + + /* + * 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) -- 2.39.5