From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB05CC7618F for ; Mon, 22 Jul 2019 17:08:49 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 94E6E2190F for ; Mon, 22 Jul 2019 17:08:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 94E6E2190F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:36100 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hpbns-0003m9-MP for qemu-devel@archiver.kernel.org; Mon, 22 Jul 2019 13:08:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46476) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hpbnV-0002Et-0L for qemu-devel@nongnu.org; Mon, 22 Jul 2019 13:08:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hpbnT-00018v-Hs for qemu-devel@nongnu.org; Mon, 22 Jul 2019 13:08:24 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36766) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hpbnQ-000178-T9; Mon, 22 Jul 2019 13:08:21 -0400 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 mx1.redhat.com (Postfix) with ESMTPS id 22A1730821A0; Mon, 22 Jul 2019 17:08:20 +0000 (UTC) Received: from x1w.redhat.com (ovpn-204-56.brq.redhat.com [10.40.204.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BDFE860BE2; Mon, 22 Jul 2019 17:08:15 +0000 (UTC) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Date: Mon, 22 Jul 2019 19:08:08 +0200 Message-Id: <20190722170809.10993-2-philmd@redhat.com> In-Reply-To: <20190722170809.10993-1-philmd@redhat.com> References: <20190722170809.10993-1-philmd@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.47]); Mon, 22 Jul 2019 17:08:20 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 1/2] hw/block/pflash_cfi01: Add missing DeviceReset() handler 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: Kevin Wolf , qemu-block@nongnu.org, John Snow , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Alistair Francis , Max Reitz , Laszlo Ersek Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" To avoid incoherent states when the machine resets (see bug report below), add the device reset callback. A "system reset" sets the device state machine in READ_ARRAY mode and, after some delay, set the SR.7 READY bit. Since we do not model timings, we set the SR.7 bit directly. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=3D1678713 Reported-by: Laszlo Ersek Reviewed-by: John Snow Reviewed-by: Alistair Francis Reviewed-by: Laszlo Ersek Regression-tested-by: Laszlo Ersek Message-Id: <20190718104837.13905-2-philmd@redhat.com> Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- hw/block/pflash_cfi01.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c index 435be1e35c..a1ec1faae5 100644 --- a/hw/block/pflash_cfi01.c +++ b/hw/block/pflash_cfi01.c @@ -865,6 +865,24 @@ static void pflash_cfi01_realize(DeviceState *dev, E= rror **errp) pfl->cfi_table[0x3f] =3D 0x01; /* Number of protection fields */ } =20 +static void pflash_cfi01_system_reset(DeviceState *dev) +{ + PFlashCFI01 *pfl =3D PFLASH_CFI01(dev); + + /* + * The command 0x00 is not assigned by the CFI open standard, + * but QEMU historically uses it for the READ_ARRAY command (0xff). + */ + pfl->cmd =3D 0x00; + pfl->wcycle =3D 0; + memory_region_rom_device_set_romd(&pfl->mem, true); + /* + * The WSM ready timer occurs at most 150ns after system reset. + * This model deliberately ignores this delay. + */ + pfl->status =3D 0x80; +} + static Property pflash_cfi01_properties[] =3D { DEFINE_PROP_DRIVE("drive", PFlashCFI01, blk), /* num-blocks is the number of blocks actually visible to the guest, @@ -909,6 +927,7 @@ static void pflash_cfi01_class_init(ObjectClass *klas= s, void *data) { DeviceClass *dc =3D DEVICE_CLASS(klass); =20 + dc->reset =3D pflash_cfi01_system_reset; dc->realize =3D pflash_cfi01_realize; dc->props =3D pflash_cfi01_properties; dc->vmsd =3D &vmstate_pflash; --=20 2.20.1