From patchwork Fri Nov 12 16:01:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Roper X-Patchwork-Id: 12617099 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 81DC2C433FE for ; Fri, 12 Nov 2021 16:02:55 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2DF5760F93 for ; Fri, 12 Nov 2021 16:02:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 2DF5760F93 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 79BFD6EC2E; Fri, 12 Nov 2021 16:02:51 +0000 (UTC) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 037A46EBA8; Fri, 12 Nov 2021 16:02:49 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10165"; a="233096888" X-IronPort-AV: E=Sophos;i="5.87,229,1631602800"; d="scan'208";a="233096888" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Nov 2021 08:01:17 -0800 X-IronPort-AV: E=Sophos;i="5.87,229,1631602800"; d="scan'208";a="733699957" Received: from mdroper-desk1.fm.intel.com ([10.1.27.134]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Nov 2021 08:01:16 -0800 From: Matt Roper To: intel-gfx@lists.freedesktop.org Subject: [PATCH] drm/i915: Don't read query SSEU for non-existent slice 0 on old platforms Date: Fri, 12 Nov 2021 08:01:07 -0800 Message-Id: <20211112160107.1593906-1-matthew.d.roper@intel.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Pre-HSW platforms don't use the gt SSEU structures; this means that calling intel_sseu_get_subslices() on slice 0 for these platforms will trip a GEM_BUG_ON(slice >= sseu->max_slices) warning. Let's move the DSS lookup for a DG2 workaround into a helper function that will only get called after we've already decided that we're on a DG2 platform. Fixes: 645cc0b9d972 ("drm/i915/dg2: Add initial gt/ctx/engine workarounds") Signed-off-by: Matt Roper Reviewed-by: Rodrigo Vivi --- drivers/gpu/drm/i915/gt/intel_workarounds.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 51591119da15..a9727447c037 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -2019,11 +2019,18 @@ engine_fake_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) CMD_CCTL_MOCS_OVERRIDE(mocs, mocs)); } } + +static bool needs_wa_1308578152(struct intel_engine_cs *engine) +{ + u64 dss_mask = intel_sseu_get_subslices(&engine->gt->info.sseu, 0); + + return (dss_mask & GENMASK(GEN_DSS_PER_GSLICE - 1, 0)) == 0; +} + static void rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) { struct drm_i915_private *i915 = engine->i915; - u64 dss_mask = intel_sseu_get_subslices(&engine->gt->info.sseu, 0); if (IS_DG2_GRAPHICS_STEP(engine->i915, G11, STEP_A0, STEP_B0)) { /* Wa_14013392000:dg2_g11 */ @@ -2057,7 +2064,7 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) /* Wa_1308578152:dg2_g10 when first gslice is fused off */ if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_B0, STEP_C0) && - (dss_mask & GENMASK(GEN_DSS_PER_GSLICE - 1, 0)) == 0) { + needs_wa_1308578152(engine)) { wa_masked_dis(wal, GEN12_CS_DEBUG_MODE1_CCCSUNIT_BE_COMMON, GEN12_REPLAY_MODE_GRANULARITY); }