From patchwork Wed Jan 13 10:06:33 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: arun.siluvery@linux.intel.com X-Patchwork-Id: 8024021 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 EDF01BEEED for ; Wed, 13 Jan 2016 10:06:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3FB3A2039E for ; Wed, 13 Jan 2016 10:06:58 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 2085D20395 for ; Wed, 13 Jan 2016 10:06:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 466116E737; Wed, 13 Jan 2016 02:06:54 -0800 (PST) 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 5DBF06E736 for ; Wed, 13 Jan 2016 02:06:52 -0800 (PST) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga102.fm.intel.com with ESMTP; 13 Jan 2016 02:06:52 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,288,1449561600"; d="scan'208";a="859562428" Received: from asiluver-linux.isw.intel.com ([10.102.226.117]) by orsmga001.jf.intel.com with ESMTP; 13 Jan 2016 02:06:50 -0800 From: Arun Siluvery To: intel-gfx@lists.freedesktop.org Date: Wed, 13 Jan 2016 10:06:33 +0000 Message-Id: <1452679593-3922-9-git-send-email-arun.siluvery@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1452679593-3922-1-git-send-email-arun.siluvery@linux.intel.com> References: <1452679593-3922-1-git-send-email-arun.siluvery@linux.intel.com> Cc: Mika Kuoppala Subject: [Intel-gfx] [PATCH 8/8] drm/i915/gen9: Add WaOCLCoherentLineFlush 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, 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 This is mainly required for preemption. Cc: Dave Gordon Signed-off-by: Arun Siluvery --- drivers/gpu/drm/i915/intel_ringbuffer.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 5a2ad10..af95091 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -980,6 +980,10 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring) /* WaDisableSTUnitPowerOptimization:skl,bxt */ WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN2, GEN8_ST_PO_DISABLE); + /* WaOCLCoherentLineFlush:skl,bxt */ + I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) | + GEN8_LQSC_FLUSH_COHERENT_LINES)); + /* WaEnablePreemptionGranularityControlByUMD:skl,bxt */ ret= wa_ring_whitelist_reg(ring, GEN8_CS_CHICKEN1); if (ret)