From patchwork Fri Jul 3 16:53:40 2015 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: 6716451 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 E746E9F457 for ; Fri, 3 Jul 2015 16:53:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9D120207E6 for ; Fri, 3 Jul 2015 16:53:52 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id C7984207D9 for ; Fri, 3 Jul 2015 16:53:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 98B9D72161; Fri, 3 Jul 2015 09:53:50 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id 38D8172161 for ; Fri, 3 Jul 2015 09:53:49 -0700 (PDT) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP; 03 Jul 2015 09:53:48 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,401,1432623600"; d="scan'208";a="740155140" Received: from asiluver-linux.isw.intel.com ([10.102.226.117]) by fmsmga001.fm.intel.com with ESMTP; 03 Jul 2015 09:53:47 -0700 From: Arun Siluvery To: intel-gfx@lists.freedesktop.org Date: Fri, 3 Jul 2015 17:53:40 +0100 Message-Id: <1435942421-28243-3-git-send-email-arun.siluvery@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1435942421-28243-1-git-send-email-arun.siluvery@linux.intel.com> References: <1435942421-28243-1-git-send-email-arun.siluvery@linux.intel.com> Subject: [Intel-gfx] [PATCH 3/4] drm/i915/gen9: Add WaFlushCoherentL3CacheLinesAtContextSwitch workaround 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=-4.8 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 In Indirect context w/a batch buffer, +WaFlushCoherentL3CacheLinesAtContextSwitch:bdw Cc: Imre Deak Signed-off-by: Arun Siluvery --- This patch depends on https://patchwork.kernel.org/patch/6715321/, which is already reviewed by Chris, temporary dependency untill it gets merged. drivers/gpu/drm/i915/intel_lrc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 152b4f6..c4cac4d 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1282,6 +1282,11 @@ static int gen9_init_indirectctx_bb(struct intel_engine_cs *ring, (IS_BROXTON(dev) && (INTEL_REVID(dev) == SKL_REVID_A0))) wa_ctx_emit(batch, MI_ARB_ON_OFF | MI_ARB_DISABLE); + /* WaFlushCoherentL3CacheLinesAtContextSwitch:skl,bxt */ + index = gen8_emit_flush_coherentl3_wa(ring, batch, index); + if (index < 0) + return index; + /* Pad to end of cacheline */ while (index % CACHELINE_DWORDS) wa_ctx_emit(batch, MI_NOOP);