From patchwork Mon Mar 2 07:40:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 1247496 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=MbzL3vIF; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48WC4H1wN7z9sPR for ; Mon, 2 Mar 2020 18:50:37 +1100 (AEDT) Received: from localhost ([::1]:56108 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j8fqU-0004tc-Ax for incoming@patchwork.ozlabs.org; Mon, 02 Mar 2020 02:50:34 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:60260) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j8fhc-0004it-Hr for qemu-devel@nongnu.org; Mon, 02 Mar 2020 02:41:25 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j8fhb-0003lQ-Eg for qemu-devel@nongnu.org; Mon, 02 Mar 2020 02:41:24 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:31331 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j8fhb-0003l0-7C for qemu-devel@nongnu.org; Mon, 02 Mar 2020 02:41:23 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1583134882; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ngv8J/eu4jYSej5X2ep9xhbT/ICki9cwCdKASiCwgIU=; b=MbzL3vIFRjbY3kgF0e4e8yTGkO5G9GuFe1CMnEoiz5ch+LffRA5T/SUiL60fl3Sqcd6eTz qAbGBkcH7mB5xbUrT6viveRV9F1SOklYFD5R+QwQoDLN5WnzC1OkWBKZJQa//7LIQwvYs6 7Tzbr6C/Jt9GTxwZViBrqGl4Jo+Ys4Q= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-218-RiE6xxWWOM6r47BMhnDGcg-1; Mon, 02 Mar 2020 02:41:18 -0500 X-MC-Unique: RiE6xxWWOM6r47BMhnDGcg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 460E6107ACC9; Mon, 2 Mar 2020 07:41:17 +0000 (UTC) Received: from jason-ThinkPad-T430s.redhat.com (ovpn-12-58.pek2.redhat.com [10.72.12.58]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9B50560BF3; Mon, 2 Mar 2020 07:41:15 +0000 (UTC) From: Jason Wang To: peter.maydell@linaro.org Subject: [PULL 15/23] e1000e: Avoid hw_error if legacy mode used Date: Mon, 2 Mar 2020 15:40:28 +0800 Message-Id: <1583134836-23991-16-git-send-email-jasowang@redhat.com> In-Reply-To: <1583134836-23991-1-git-send-email-jasowang@redhat.com> References: <1583134836-23991-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Yuri Benditovich , Jason Wang , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Yuri Benditovich https://bugzilla.redhat.com/show_bug.cgi?id=1787142 The emulation issues hw_error if PSRCTL register is written, for example, with zero value. Such configuration does not present any problem when DTYP bits of RCTL register define legacy format of transfer descriptors. Current commit discards check for BSIZE0 and BSIZE1 when legacy mode used. Acked-by: Dmitry Fleytman Signed-off-by: Yuri Benditovich Signed-off-by: Jason Wang --- hw/net/e1000e_core.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/hw/net/e1000e_core.c b/hw/net/e1000e_core.c index 9b76f82..d110c5a 100644 --- a/hw/net/e1000e_core.c +++ b/hw/net/e1000e_core.c @@ -2813,12 +2813,15 @@ e1000e_set_eitr(E1000ECore *core, int index, uint32_t val) static void e1000e_set_psrctl(E1000ECore *core, int index, uint32_t val) { - if ((val & E1000_PSRCTL_BSIZE0_MASK) == 0) { - hw_error("e1000e: PSRCTL.BSIZE0 cannot be zero"); - } + if (core->mac[RCTL] & E1000_RCTL_DTYP_MASK) { + + if ((val & E1000_PSRCTL_BSIZE0_MASK) == 0) { + hw_error("e1000e: PSRCTL.BSIZE0 cannot be zero"); + } - if ((val & E1000_PSRCTL_BSIZE1_MASK) == 0) { - hw_error("e1000e: PSRCTL.BSIZE1 cannot be zero"); + if ((val & E1000_PSRCTL_BSIZE1_MASK) == 0) { + hw_error("e1000e: PSRCTL.BSIZE1 cannot be zero"); + } } core->mac[PSRCTL] = val;