From patchwork Fri Oct 11 13:39:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Kuoppala X-Patchwork-Id: 11185503 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8FD9E912 for ; Fri, 11 Oct 2019 13:39:48 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 77F01214AF for ; Fri, 11 Oct 2019 13:39:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 77F01214AF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4ABBD6EC3C; Fri, 11 Oct 2019 13:39:46 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id D859E6EB3D for ; Fri, 11 Oct 2019 13:39:44 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Oct 2019 06:39:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,284,1566889200"; d="scan'208";a="278123238" Received: from rosetta.fi.intel.com ([10.237.72.194]) by orsmga001.jf.intel.com with ESMTP; 11 Oct 2019 06:39:43 -0700 Received: by rosetta.fi.intel.com (Postfix, from userid 1000) id 72BDF840766; Fri, 11 Oct 2019 16:39:16 +0300 (EEST) From: Mika Kuoppala To: intel-gfx@lists.freedesktop.org Date: Fri, 11 Oct 2019 16:39:11 +0300 Message-Id: <20191011133911.18621-3-mika.kuoppala@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191011133911.18621-1-mika.kuoppala@linux.intel.com> References: <20191011133911.18621-1-mika.kuoppala@linux.intel.com> Subject: [Intel-gfx] [PATCH 3/3] drm/i915/tgl: Add extra hdc flush workaround X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 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" In order to ensure constant caches are invalidated properly with a0, we need extra hdc flush after invalidation. References: HSDES#1604544889 Signed-off-by: Mika Kuoppala Acked-by: Chris Wilson --- drivers/gpu/drm/i915/gt/intel_lrc.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 967e5b2e5e80..8db86772d8d4 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -3236,6 +3236,24 @@ static int gen12_emit_flush_render(struct i915_request *request, *cs++ = preparser_disable(false); intel_ring_advance(request, cs); + + /* + * Workaround constant cache invalidation issue + * for tgl:a0, #1604544889 + */ + flags = 0; + flags |= PIPE_CONTROL_CS_STALL; + flags |= PIPE_CONTROL_HDC_PIPELINE_FLUSH; + + flags |= PIPE_CONTROL_STORE_DATA_INDEX; + flags |= PIPE_CONTROL_QW_WRITE; + + cs = intel_ring_begin(request, 6); + if (IS_ERR(cs)) + return PTR_ERR(cs); + + cs = gen8_emit_pipe_control(cs, flags, LRC_PPHWSP_SCRATCH_ADDR); + intel_ring_advance(request, cs); } return 0;