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 X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D8C7C433E6 for ; Thu, 28 Jan 2021 19:25:00 +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 E377364E46 for ; Thu, 28 Jan 2021 19:24:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E377364E46 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=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 94AA86E9E3; Thu, 28 Jan 2021 19:24:49 +0000 (UTC) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7FA9C6E9DA for ; Thu, 28 Jan 2021 19:24:39 +0000 (UTC) IronPort-SDR: ODWif1/1fXNQrY7kMOk9GtCm7jg/SAB0CYPJMmQ5o66BFqrgkULFR9nr+LU8YFniEJUzRBmwOK Zw1x+LzvAHmw== X-IronPort-AV: E=McAfee;i="6000,8403,9878"; a="244384040" X-IronPort-AV: E=Sophos;i="5.79,383,1602572400"; d="scan'208";a="244384040" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jan 2021 11:24:38 -0800 IronPort-SDR: 6aQUEH7biBsuIX2YdF0+VLO1xDIeJckUDhb+LInO+WlMziT9F2OrV6nufv2JjkxEdOJvmvQ1A+ ZLfeyCWJFlYg== X-IronPort-AV: E=Sophos;i="5.79,383,1602572400"; d="scan'208";a="411110176" Received: from mdroper-desk1.fm.intel.com ([10.1.27.168]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jan 2021 11:24:37 -0800 From: Matt Roper To: intel-gfx@lists.freedesktop.org Date: Thu, 28 Jan 2021 11:24:06 -0800 Message-Id: <20210128192413.1715802-12-matthew.d.roper@intel.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20210128192413.1715802-1-matthew.d.roper@intel.com> References: <20210128192413.1715802-1-matthew.d.roper@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 11/18] drm/i915/display13: Required bandwidth increases when VT-d is active 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" If VT-d is active, the memory bandwidth usage of the display is 5% higher. Take this into account when determining whether we can support a display configuration. Bspec: 64631 Cc: Matt Atwood Signed-off-by: Matt Roper --- drivers/gpu/drm/i915/display/intel_bw.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index 32522ec1ffb9..14cb3fbf0039 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -398,6 +398,9 @@ static unsigned int intel_bw_data_rate(struct drm_i915_private *dev_priv, for_each_pipe(dev_priv, pipe) data_rate += bw_state->data_rate[pipe]; + if (HAS_DISPLAY13(dev_priv) && intel_vtd_active()) + data_rate = data_rate * 105 / 100; + return data_rate; } -- 2.25.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx