From patchwork Thu Jan 21 21:43:54 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: 8085161 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 D9F4DBEEE5 for ; Thu, 21 Jan 2016 21:44:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 20C582044B for ; Thu, 21 Jan 2016 21:44:41 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 5F6522042A for ; Thu, 21 Jan 2016 21:44:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 749E46E2DB; Thu, 21 Jan 2016 13:44:39 -0800 (PST) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTP id 1E0C96E2D6 for ; Thu, 21 Jan 2016 13:44:08 -0800 (PST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga104.fm.intel.com with ESMTP; 21 Jan 2016 13:44:08 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,327,1449561600"; d="scan'208";a="886542381" Received: from asiluver-linux.isw.intel.com ([10.102.226.117]) by fmsmga001.fm.intel.com with ESMTP; 21 Jan 2016 13:44:07 -0800 From: Arun Siluvery To: intel-gfx@lists.freedesktop.org Date: Thu, 21 Jan 2016 21:43:54 +0000 Message-Id: <1453412634-29238-9-git-send-email-arun.siluvery@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1453412634-29238-1-git-send-email-arun.siluvery@linux.intel.com> References: <1453412634-29238-1-git-send-email-arun.siluvery@linux.intel.com> Subject: [Intel-gfx] [PATCH v3 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 future enabling of pre-emptive command execution. v2: explain purpose of change (Chris) Reviewed-by: Nick Hoath 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 e91fb70..f26f274 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -979,6 +979,10 @@ 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)