From mboxrd@z Thu Jan 1 00:00:00 1970 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E8BA6C43334 for ; Mon, 27 Jun 2022 13:00:11 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 753CF11A681; Mon, 27 Jun 2022 13:00:11 +0000 (UTC) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id E944A11A681 for ; Mon, 27 Jun 2022 13:00:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1656334809; x=1687870809; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=oaZ6afm8onep+f0nOCPr8EjklEjKLX8Wy8t95/jgvFI=; b=XsYUq34mPjIs6k8jQtayyJJUokgU6kVEhIx43tGufRozQuN7Me9PzZDG RsJX2l0meSid8B4/DbU3MzNOr8cWXdQWwifjIRx773FBg05i7/nOIJfRn nNi2MyoGZPqIVfr3tj9qyRdbmD5D1uhaKLWbQ9UHy8pwBwFptU/j2ZFsF UCGpHJxsyvoFtJhvqYomvsaq9C5bX1oza08qmuMgLfklqPgXL4/cP5p6t FlThWY7kJ1mdguutc03bEEfO+W3LoOak/s5FlHfg195SDDBRPLX8cC3b6 sckaF9d8EoXYrx7ae+94k6w2qkf3BPtxO9xg7N6x3ikxVw7K/Chctuah+ Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10390"; a="261856101" X-IronPort-AV: E=Sophos;i="5.92,226,1650956400"; d="scan'208";a="261856101" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jun 2022 06:00:09 -0700 X-IronPort-AV: E=Sophos;i="5.92,226,1650956400"; d="scan'208";a="594294051" Received: from kkuzniew-mobl2.ger.corp.intel.com (HELO uxy.cgates.eltek) ([10.249.131.145]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jun 2022 06:00:08 -0700 From: Lionel Landwerlin To: intel-gfx@lists.freedesktop.org Date: Mon, 27 Jun 2022 15:59:28 +0300 Message-Id: <20220627125928.177845-1-lionel.g.landwerlin@intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Intel-gfx] [PATCH v2] drm/i915/dg2: Add performance workaround 18019455067 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" The recommended number of stackIDs for Ray Tracing subsystem is 512 rather than 2048 (default HW programming). v2: Move the programming to dg2_ctx_gt_tuning_init() (Lucas) Signed-off-by: Lionel Landwerlin --- drivers/gpu/drm/i915/gt/intel_gt_regs.h | 4 ++++ drivers/gpu/drm/i915/gt/intel_workarounds.c | 5 +++++ 2 files changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h index 07ef111947b8c..12fc87b957425 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h @@ -1112,6 +1112,10 @@ #define GEN12_PUSH_CONST_DEREF_HOLD_DIS REG_BIT(8) #define RT_CTRL _MMIO(0xe530) +#define RT_CTRL_NUMBER_OF_STACKIDS_MASK REG_GENMASK(6, 5) +#define NUMBER_OF_STACKIDS_512 2 +#define NUMBER_OF_STACKIDS_1024 1 +#define NUMBER_OF_STACKIDS_2048 0 #define DIS_NULL_QUERY REG_BIT(10) #define EU_PERF_CNTL1 _MMIO(0xe558) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 3213c593a55f4..4d80716b957d4 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -575,6 +575,11 @@ static void dg2_ctx_gt_tuning_init(struct intel_engine_cs *engine, FF_MODE2_TDS_TIMER_MASK, FF_MODE2_TDS_TIMER_128, 0, false); + wa_write_clr_set(wal, + RT_CTRL, + RT_CTRL_NUMBER_OF_STACKIDS_MASK, + REG_FIELD_PREP(RT_CTRL_NUMBER_OF_STACKIDS_MASK, + NUMBER_OF_STACKIDS_512)); } /* -- 2.34.1