From nobody Mon Feb 9 15:48:14 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1628261320081843.3479355868404; Fri, 6 Aug 2021 07:48:40 -0700 (PDT) Received: from localhost ([::1]:46254 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mC19K-0006U9-P2 for importer@patchew.org; Fri, 06 Aug 2021 10:48:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38136) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mC18N-0005KI-HS for qemu-devel@nongnu.org; Fri, 06 Aug 2021 10:47:39 -0400 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]:39715) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mC18M-0000ix-7s for qemu-devel@nongnu.org; Fri, 06 Aug 2021 10:47:39 -0400 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mC18E-0004Jn-2u; Fri, 06 Aug 2021 16:47:30 +0200 Received: from [2a0a:edc0:0:1101:1d::39] (helo=dude03.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1mC18C-0005fb-TH; Fri, 06 Aug 2021 16:47:28 +0200 Received: from jlu by dude03.red.stw.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1mC18C-00Fk4c-Pz; Fri, 06 Aug 2021 16:47:28 +0200 From: Jan Luebbe To: qemu-arm@nongnu.org Subject: [PATCH] hw/char/pl011: add support for sending break Date: Fri, 6 Aug 2021 16:47:00 +0200 Message-Id: <20210806144700.3751979-1-jlu@pengutronix.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: jlu@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: qemu-devel@nongnu.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:67c:670:201:290:27ff:fe1d:cc33; envelope-from=jlu@pengutronix.de; helo=metis.ext.pengutronix.de X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action 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: peter.maydell@linaro.org, Jan Luebbe , qemu-devel@nongnu.org, pbonzini@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1628261323647100001 Content-Type: text/plain; charset="utf-8" Break events are currently only handled by chardev/char-serial.c, so we just ignore errors, which results in no behaviour change for other chardevs. Signed-off-by: Jan Luebbe --- hw/char/pl011.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/char/pl011.c b/hw/char/pl011.c index dc85527a5f92..6e2d7f75095c 100644 --- a/hw/char/pl011.c +++ b/hw/char/pl011.c @@ -26,6 +26,7 @@ #include "hw/qdev-properties-system.h" #include "migration/vmstate.h" #include "chardev/char-fe.h" +#include "chardev/char-serial.h" #include "qemu/log.h" #include "qemu/module.h" #include "trace.h" @@ -231,6 +232,11 @@ static void pl011_write(void *opaque, hwaddr offset, s->read_count =3D 0; s->read_pos =3D 0; } + if ((s->lcr ^ value) & 0x1) { + int break_enable =3D value & 0x1; + qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_SERIAL_SET_BREAK, + &break_enable); + } s->lcr =3D value; pl011_set_read_trigger(s); break; --=20 2.30.2