From patchwork Thu Sep 10 23:56:10 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: yu.dai@intel.com X-Patchwork-Id: 7156341 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 989FEBF036 for ; Thu, 10 Sep 2015 23:57:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C6ED32080E for ; Thu, 10 Sep 2015 23:57:57 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 10625207FA for ; Thu, 10 Sep 2015 23:57:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7A5C67217B; Thu, 10 Sep 2015 16:57:56 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id C5CC98A38F for ; Thu, 10 Sep 2015 16:57:55 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga102.fm.intel.com with ESMTP; 10 Sep 2015 16:57:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,507,1437462000"; d="scan'208";a="766664424" Received: from alex-hsw.fm.intel.com ([10.19.83.132]) by orsmga001.jf.intel.com with ESMTP; 10 Sep 2015 16:57:56 -0700 From: yu.dai@intel.com To: intel-gfx@lists.freedesktop.org Date: Thu, 10 Sep 2015 16:56:10 -0700 Message-Id: <1441929372-26140-5-git-send-email-yu.dai@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1441929372-26140-1-git-send-email-yu.dai@intel.com> References: <1441929372-26140-1-git-send-email-yu.dai@intel.com> Subject: [Intel-gfx] [PATCH 4/6] drm/i915/guc: Don't send flips to GuC X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sagar Arun Kamble Due to flip interrupts GuC stays awake always and GT does not enter RC6. Do not route those interrupts to GuC for now. Signed-off-by: Sagar Arun Kamble --- drivers/gpu/drm/i915/intel_guc_loader.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c index 4eadcd2..3dcc656 100644 --- a/drivers/gpu/drm/i915/intel_guc_loader.c +++ b/drivers/gpu/drm/i915/intel_guc_loader.c @@ -110,11 +110,11 @@ static void direct_interrupts_to_guc(struct drm_i915_private *dev_priv) for_each_ring(ring, dev_priv, i) I915_WRITE(RING_MODE_GEN7(ring), irqs); - /* tell DE to send (all) flip_done to GuC */ - irqs = DERRMR_PIPEA_PRI_FLIP_DONE | DERRMR_PIPEA_SPR_FLIP_DONE | - DERRMR_PIPEB_PRI_FLIP_DONE | DERRMR_PIPEB_SPR_FLIP_DONE | - DERRMR_PIPEC_PRI_FLIP_DONE | DERRMR_PIPEC_SPR_FLIP_DONE; - /* Unmasked bits will cause GuC response message to be sent */ + /* + * RC6 does not work if flips are directed to GuC as it is keeping + * GuC Awake + */ + irqs = 0; I915_WRITE(DE_GUCRMR, ~irqs); /* route USER_INTERRUPT to Host, all others are sent to GuC. */