From patchwork Sun Aug 23 12:22:47 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sagar.a.kamble@intel.com X-Patchwork-Id: 7057561 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 4F5AE9F373 for ; Sun, 23 Aug 2015 12:21:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 82B9D20499 for ; Sun, 23 Aug 2015 12:21:41 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id A366020687 for ; Sun, 23 Aug 2015 12:21:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 188876E352; Sun, 23 Aug 2015 05:21:40 -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 DEC156E352 for ; Sun, 23 Aug 2015 05:21:38 -0700 (PDT) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP; 23 Aug 2015 05:21:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,732,1432623600"; d="scan'208";a="789226856" Received: from sakamble-desktop.iind.intel.com ([10.223.82.56]) by fmsmga002.fm.intel.com with ESMTP; 23 Aug 2015 05:21:37 -0700 From: Sagar Arun Kamble To: intel-gfx@lists.freedesktop.org Date: Sun, 23 Aug 2015 17:52:47 +0530 Message-Id: <1440332571-20761-2-git-send-email-sagar.a.kamble@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1440332571-20761-1-git-send-email-sagar.a.kamble@intel.com> References: <1440332571-20761-1-git-send-email-sagar.a.kamble@intel.com> Subject: [Intel-gfx] [PATCH 1/5] drm/i915: Increase maximum polling time to 50ms for forcewake request/clear ack 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=-5.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 On BXT, We Observe timeout for forcewake request completion with 2ms polling period as given here: [drm:fw_domains_get] ERROR render: timed out waiting for forcewake ack request. Polling for 50ms is recommended to avoid these timeouts. Change-Id: Ie715b0069a3049606e9602bc5e97a6511890864d Signed-off-by: Sagar Arun Kamble --- drivers/gpu/drm/i915/intel_uncore.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 9d3c2e4..2df03b1 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -27,7 +27,7 @@ #include -#define FORCEWAKE_ACK_TIMEOUT_MS 2 +#define FORCEWAKE_ACK_TIMEOUT_MS 50 #define __raw_i915_read8(dev_priv__, reg__) readb((dev_priv__)->regs + (reg__)) #define __raw_i915_write8(dev_priv__, reg__, val__) writeb(val__, (dev_priv__)->regs + (reg__))