From patchwork Tue Mar 10 09:19:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tvrtko Ursulin X-Patchwork-Id: 11428895 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D6F15139A for ; Tue, 10 Mar 2020 09:19:34 +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 BE1B32467F for ; Tue, 10 Mar 2020 09:19:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BE1B32467F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0DDDE6E15C; Tue, 10 Mar 2020 09:19:33 +0000 (UTC) X-Original-To: Intel-gfx@lists.freedesktop.org Delivered-To: Intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 137116E843 for ; Tue, 10 Mar 2020 09:19:32 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Mar 2020 02:19:31 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,518,1574150400"; d="scan'208";a="260718660" Received: from pkosiack-mobl2.ger.corp.intel.com (HELO localhost.localdomain) ([10.252.21.27]) by orsmga002.jf.intel.com with ESMTP; 10 Mar 2020 02:19:29 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org Date: Tue, 10 Mar 2020 09:19:27 +0000 Message-Id: <20200310091927.27401-1-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH] drm/i915/tgl: WaEnablePreemptionGranularityControlByUMD 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" From: Tvrtko Ursulin Certain workloads need the ability to disable preemption completely so allow them to do that by whitelisting GEN8_CS_CHICKEN1. Signed-off-by: Tvrtko Ursulin Cc: Michal Mrozek Cc: Tony Ye Cc: Rafael Antognolli Cc: Jason Ekstrand Acked-by: Michal Mrozek Acked-by: Tony Ye --- We need confirmation and acks from all three userspace components here. Especially since my impression was some are for and some were against whitelisting this one. --- drivers/gpu/drm/i915/gt/intel_workarounds.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 391f39b1fb26..37becdf77427 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -1276,6 +1276,9 @@ static void tgl_whitelist_build(struct intel_engine_cs *engine) /* Wa_1806527549:tgl */ whitelist_reg(w, HIZ_CHICKEN); + + /* WaEnablePreemptionGranularityControlByUMD:tgl */ + whitelist_reg(w, GEN8_CS_CHICKEN1); break; default: break;