From nobody Mon May 6 10:27:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; 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; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1632140988; cv=none; d=zohomail.com; s=zohoarc; b=nukntWowvfIKV9sCFFejcEYzoDklOuHOLZev0PC+wjgy8ki3GRHb1m78a4fi5ewep819Gy0O5mrsHsnGpgcWSn8Y5jBQU1g9z7vKz5RR8kn3L9M3SEuuwt56JfQUrZYx8UKnHgeb470oDJqqoN5JbgNwV2eVFjSryb3tCMTSZA4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1632140988; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=pPkyoO4nNHJGaPC8tme6jYcFmt9MYoMhyoF4+cz5dts=; b=cpKNrjNeW4G/riM82HC1U8fmsSo8UIKr32v53mDN0zyd6emmy3q01CG7TXoXXaayZapAYBJwDgyHW8UFWBqHc4fiXj0bofTy6XD5wYZDmWtfNEC16rxEUEyAhCNKrcrUayNzuj6qo/qXAxejyUDsbjHTsvyiK/APaIdb7+P+zBs= ARC-Authentication-Results: i=1; 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Mon, 20 Sep 2021 08:25:46 -0400 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-224--6p_3oY5OSaz_OKOpaiiXQ-1; Mon, 20 Sep 2021 08:25:41 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C911B1084684; Mon, 20 Sep 2021 12:25:40 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.195.12]) by smtp.corp.redhat.com (Postfix) with ESMTP id E092160C2B; Mon, 20 Sep 2021 12:25:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1632140742; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=pPkyoO4nNHJGaPC8tme6jYcFmt9MYoMhyoF4+cz5dts=; b=M/zK/zoHX/dUxbci1BKhVhxxwW5Numd9Jj/G+Xmiak3FH3PbmVDiybLfUZBiGqTL14XyFF I6Bj/pZb0kQdMR1ef65Q8G2kI/SNgV33OjECpvA2NOArtr80XSnOoZh33COCTaOtgmiIiX tZhVHh+2xfOBfRZCk97ZdKmeuK+PknU= X-MC-Unique: -6p_3oY5OSaz_OKOpaiiXQ-1 From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, peter.maydell@linaro.org, pbonzini@redhat.com, qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH v2] hw/rtc/pl031: Send RTC_CHANGE QMP event Date: Mon, 20 Sep 2021 14:25:35 +0200 Message-Id: <20210920122535.269988-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eric.auger@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable 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=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.475, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, 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: drjones@redhat.com, gshan@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1632140989319100001 Content-Type: text/plain; charset="utf-8" The PL031 currently is not able to report guest RTC change to the QMP monitor as opposed to mc146818 or spapr RTCs. This patch adds the call to qapi_event_send_rtc_change() when the Load Register is written. The value which is reported corresponds to the difference between the guest reference time and the reference time kept in softmmu/rtc.c. For instance adding 20s to the guest RTC value will report 20. Adding an extra 20s to the guest RTC value will report 20 + 20 =3D 40. The inclusion of qapi/qapi-types-misc-target.h in hw/rtl/pl031.c require to compile the PL031 with specific_ss.add() to avoid ./qapi/qapi-types-misc-target.h:18:13: error: attempt to use poisoned "TARGET_". Signed-off-by: Eric Auger Signed-off-by: Peter Maydell --- v1 -> v2: - Use Peter's implementation and remove subsection Tested with the following script run on guest: #!/bin/sh old=3D$(hwclock --show | cut -f1-7 -d' ') oldabs=3D$(date +%s -d "$old") newabs=3D$(expr $oldabs + $1) new=3D$(date -d @"$newabs") echo Old: $oldabs $old echo New: $newabs $new hwclock --set --date "$new" and compared with x86 behavior. --- hw/rtc/meson.build | 2 +- hw/rtc/pl031.c | 10 +++++++++- 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/hw/rtc/meson.build b/hw/rtc/meson.build index 7cecdee5ddb..8fd8d8f9a71 100644 --- a/hw/rtc/meson.build +++ b/hw/rtc/meson.build @@ -2,7 +2,7 @@ softmmu_ss.add(when: 'CONFIG_DS1338', if_true: files('ds1338.c')) softmmu_ss.add(when: 'CONFIG_M41T80', if_true: files('m41t80.c')) softmmu_ss.add(when: 'CONFIG_M48T59', if_true: files('m48t59.c')) -softmmu_ss.add(when: 'CONFIG_PL031', if_true: files('pl031.c')) +specific_ss.add(when: 'CONFIG_PL031', if_true: files('pl031.c')) softmmu_ss.add(when: 'CONFIG_TWL92230', if_true: files('twl92230.c')) softmmu_ss.add(when: ['CONFIG_ISA_BUS', 'CONFIG_M48T59'], if_true: files('= m48t59-isa.c')) softmmu_ss.add(when: 'CONFIG_XLNX_ZYNQMP', if_true: files('xlnx-zynqmp-rtc= .c')) diff --git a/hw/rtc/pl031.c b/hw/rtc/pl031.c index 2bbb2062ac8..e7ced90b025 100644 --- a/hw/rtc/pl031.c +++ b/hw/rtc/pl031.c @@ -24,6 +24,7 @@ #include "qemu/log.h" #include "qemu/module.h" #include "trace.h" +#include "qapi/qapi-events-misc-target.h" =20 #define RTC_DR 0x00 /* Data read register */ #define RTC_MR 0x04 /* Match register */ @@ -136,10 +137,17 @@ static void pl031_write(void * opaque, hwaddr offset, trace_pl031_write(offset, value); =20 switch (offset) { - case RTC_LR: + case RTC_LR: { + struct tm tm; + s->tick_offset +=3D value - pl031_get_count(s); + + qemu_get_timedate(&tm, s->tick_offset); + qapi_event_send_rtc_change(qemu_timedate_diff(&tm)); + pl031_set_alarm(s); break; + } case RTC_MR: s->mr =3D value; pl031_set_alarm(s); --=20 2.26.3