From patchwork Tue Oct 21 10:45:25 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dheeraj Jamwal X-Patchwork-Id: 5113991 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 921E7C11AC for ; Tue, 21 Oct 2014 11:07:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C2B4320158 for ; Tue, 21 Oct 2014 11:07:06 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DDC8D2012F for ; Tue, 21 Oct 2014 11:07:05 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 7E8B1B7D; Tue, 21 Oct 2014 10:59:44 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 92A43B38 for ; Tue, 21 Oct 2014 10:59:42 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id 31B9B20114 for ; Tue, 21 Oct 2014 10:59:42 +0000 (UTC) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 21 Oct 2014 03:59:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,761,1406617200"; d="scan'208";a="617792075" Received: from ubuntu-desktop.png.intel.com ([10.221.122.25]) by fmsmga002.fm.intel.com with ESMTP; 21 Oct 2014 03:59:41 -0700 From: Dheeraj Jamwal To: ltsi-dev@lists.linuxfoundation.org Date: Tue, 21 Oct 2014 18:45:25 +0800 Message-Id: <1413889294-31328-126-git-send-email-dheerajx.s.jamwal@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1413889294-31328-1-git-send-email-dheerajx.s.jamwal@intel.com> References: <1413889294-31328-1-git-send-email-dheerajx.s.jamwal@intel.com> MIME-Version: 1.0 X-Spam-Status: No, score=-5.6 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 Subject: [LTSI-dev] [PATCH 0125/1094] drm/i915: Don't apply WaVSThreadDispatchOverride on HSW X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ville Syrjälä BSpec states that the thread override values set by gen7_setup_fixed_func_scheduler() are invalid for HSW. So let's not muck around with them. Since gen7_setup_fixed_func_scheduler() now has two totally independent parts, one for IVB and one for HSW, move the HSW part directly into haswell_init_clock_gating(). Note tht there's another workaround by the name of WaHSWVSRefCountFullforceMissDisable which basically claims that later steppings don't need the fix, but since WaVSRefCountFullforceMissDisable is listed to be needed for all steppings play it safe and keep applying the workaround. Signed-off-by: Ville Syrjälä Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter (cherry picked from commit e36ea7ff40d08ef914ee08fde63a25a7ee93959c) Signed-off-by: Dheeraj Jamwal --- drivers/gpu/drm/i915/intel_pm.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index d49a4ed..23c27bc 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4660,7 +4660,7 @@ static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv) uint32_t reg = I915_READ(GEN7_FF_THREAD_MODE); /* - * WaVSThreadDispatchOverride:ivb,hsw + * WaVSThreadDispatchOverride:ivb * * This actually overrides the dispatch * mode for all thread types. @@ -4670,10 +4670,6 @@ static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv) reg |= GEN7_FF_VS_SCHED_HW; reg |= GEN7_FF_DS_SCHED_HW; - /* WaVSRefCountFullforceMissDisable:hsw */ - if (IS_HASWELL(dev_priv->dev)) - reg &= ~GEN7_FF_VS_REF_CNT_FFME; - I915_WRITE(GEN7_FF_THREAD_MODE, reg); } @@ -4784,7 +4780,9 @@ static void haswell_init_clock_gating(struct drm_device *dev) I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) | GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB); - gen7_setup_fixed_func_scheduler(dev_priv); + /* WaVSRefCountFullforceMissDisable:hsw */ + I915_WRITE(GEN7_FF_THREAD_MODE, + I915_READ(GEN7_FF_THREAD_MODE) & ~GEN7_FF_VS_REF_CNT_FFME); /* WaDisable4x2SubspanOptimization:hsw */ I915_WRITE(CACHE_MODE_1,