From nobody Thu Nov 13 16:16:45 2025 Delivered-To: importer@patchew.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; 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; dmarc=fail(p=none dis=none) header.from=linux.ibm.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 15810266973180.8175855351242944; Thu, 6 Feb 2020 14:04:57 -0800 (PST) Received: from localhost ([::1]:47010 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1izpGZ-00060f-Eu for importer@patchew.org; Thu, 06 Feb 2020 17:04:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:41402) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1izoxd-0002x6-Bi for qemu-devel@nongnu.org; Thu, 06 Feb 2020 16:45:22 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1izoxa-0007Kr-NH for qemu-devel@nongnu.org; Thu, 06 Feb 2020 16:45:21 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:18804) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1izoxa-0007H3-Bf for qemu-devel@nongnu.org; Thu, 06 Feb 2020 16:45:18 -0500 Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 016LiakZ128862 for ; Thu, 6 Feb 2020 16:45:17 -0500 Received: from e06smtp02.uk.ibm.com (e06smtp02.uk.ibm.com [195.75.94.98]) by mx0a-001b2d01.pphosted.com with ESMTP id 2y0mpnnspc-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 06 Feb 2020 16:45:17 -0500 Received: from localhost by e06smtp02.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 6 Feb 2020 21:45:12 -0000 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 016LjA9k64159958 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 6 Feb 2020 21:45:10 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B6471AE053; Thu, 6 Feb 2020 21:45:09 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9ED5AAE04D; Thu, 6 Feb 2020 21:45:09 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Thu, 6 Feb 2020 21:45:09 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 4958) id 196E8E0287; Thu, 6 Feb 2020 22:45:09 +0100 (CET) From: Eric Farman To: Cornelia Huck Subject: [RFC PATCH v2 6/7] vfio-ccw: Refactor ccw irq handler Date: Thu, 6 Feb 2020 22:45:08 +0100 X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200206214509.16434-1-farman@linux.ibm.com> References: <20200206214509.16434-1-farman@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 20020621-0008-0000-0000-000003506F4E X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20020621-0009-0000-0000-00004A710495 Message-Id: <20200206214509.16434-7-farman@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-02-06_04:2020-02-06, 2020-02-06 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 mlxlogscore=999 clxscore=1015 suspectscore=2 lowpriorityscore=0 adultscore=0 malwarescore=0 impostorscore=0 phishscore=0 mlxscore=0 bulkscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002060158 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 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: Jason Herne , Eric Farman , qemu-devel@nongnu.org, Halil Pasic , qemu-s390x@nongnu.org, Jared Rossi Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Make it easier to add new ones in the future. Signed-off-by: Eric Farman Reviewed-by: Cornelia Huck --- Notes: v1->v2: - Make irq parameter unsigned [CH] - Remove extraneous %m from error_report calls [CH] hw/vfio/ccw.c | 57 ++++++++++++++++++++++++++++++++++++--------------- 1 file changed, 41 insertions(+), 16 deletions(-) diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c index d2408f3357..044441a277 100644 --- a/hw/vfio/ccw.c +++ b/hw/vfio/ccw.c @@ -335,22 +335,36 @@ read_err: css_inject_io_interrupt(sch); } =20 -static void vfio_ccw_register_io_notifier(VFIOCCWDevice *vcdev, Error **er= rp) +static void vfio_ccw_register_irq_notifier(VFIOCCWDevice *vcdev, + unsigned int irq, + Error **errp) { VFIODevice *vdev =3D &vcdev->vdev; struct vfio_irq_info *irq_info; size_t argsz; int fd; + EventNotifier *notifier; + IOHandler *fd_read; + + switch (irq) { + case VFIO_CCW_IO_IRQ_INDEX: + notifier =3D &vcdev->io_notifier; + fd_read =3D vfio_ccw_io_notifier_handler; + break; + default: + error_setg(errp, "vfio: Unsupported device irq(%d)", irq); + return; + } =20 - if (vdev->num_irqs < VFIO_CCW_IO_IRQ_INDEX + 1) { - error_setg(errp, "vfio: unexpected number of io irqs %u", + if (vdev->num_irqs < irq + 1) { + error_setg(errp, "vfio: unexpected number of irqs %u", vdev->num_irqs); return; } =20 argsz =3D sizeof(*irq_info); irq_info =3D g_malloc0(argsz); - irq_info->index =3D VFIO_CCW_IO_IRQ_INDEX; + irq_info->index =3D irq; irq_info->argsz =3D argsz; if (ioctl(vdev->fd, VFIO_DEVICE_GET_IRQ_INFO, irq_info) < 0 || irq_info->count < 1) { @@ -358,37 +372,48 @@ static void vfio_ccw_register_io_notifier(VFIOCCWDevi= ce *vcdev, Error **errp) goto out_free_info; } =20 - if (event_notifier_init(&vcdev->io_notifier, 0)) { + if (event_notifier_init(notifier, 0)) { error_setg_errno(errp, errno, - "vfio: Unable to init event notifier for IO"); + "vfio: Unable to init event notifier for irq (%d)= ", irq); goto out_free_info; } =20 - fd =3D event_notifier_get_fd(&vcdev->io_notifier); - qemu_set_fd_handler(fd, vfio_ccw_io_notifier_handler, NULL, vcdev); + fd =3D event_notifier_get_fd(notifier); + qemu_set_fd_handler(fd, fd_read, NULL, vcdev); =20 - if (vfio_set_irq_signaling(vdev, VFIO_CCW_IO_IRQ_INDEX, 0, + if (vfio_set_irq_signaling(vdev, irq, 0, VFIO_IRQ_SET_ACTION_TRIGGER, fd, errp)) { qemu_set_fd_handler(fd, NULL, NULL, vcdev); - event_notifier_cleanup(&vcdev->io_notifier); + event_notifier_cleanup(notifier); } =20 out_free_info: g_free(irq_info); } =20 -static void vfio_ccw_unregister_io_notifier(VFIOCCWDevice *vcdev) +static void vfio_ccw_unregister_irq_notifier(VFIOCCWDevice *vcdev, + unsigned int irq) { Error *err =3D NULL; + EventNotifier *notifier; + + switch (irq) { + case VFIO_CCW_IO_IRQ_INDEX: + notifier =3D &vcdev->io_notifier; + break; + default: + error_report("vfio: Unsupported device irq(%d)", irq); + return; + } =20 - if (vfio_set_irq_signaling(&vcdev->vdev, VFIO_CCW_IO_IRQ_INDEX, 0, + if (vfio_set_irq_signaling(&vcdev->vdev, irq, 0, VFIO_IRQ_SET_ACTION_TRIGGER, -1, &err)) { error_reportf_err(err, VFIO_MSG_PREFIX, vcdev->vdev.name); } =20 - qemu_set_fd_handler(event_notifier_get_fd(&vcdev->io_notifier), + qemu_set_fd_handler(event_notifier_get_fd(notifier), NULL, NULL, vcdev); - event_notifier_cleanup(&vcdev->io_notifier); + event_notifier_cleanup(notifier); } =20 static void vfio_ccw_get_region(VFIOCCWDevice *vcdev, Error **errp) @@ -591,7 +616,7 @@ static void vfio_ccw_realize(DeviceState *dev, Error **= errp) goto out_region_err; } =20 - vfio_ccw_register_io_notifier(vcdev, &err); + vfio_ccw_register_irq_notifier(vcdev, VFIO_CCW_IO_IRQ_INDEX, &err); if (err) { goto out_notifier_err; } @@ -620,7 +645,7 @@ static void vfio_ccw_unrealize(DeviceState *dev, Error = **errp) S390CCWDeviceClass *cdc =3D S390_CCW_DEVICE_GET_CLASS(cdev); VFIOGroup *group =3D vcdev->vdev.group; =20 - vfio_ccw_unregister_io_notifier(vcdev); + vfio_ccw_unregister_irq_notifier(vcdev, VFIO_CCW_IO_IRQ_INDEX); vfio_ccw_put_region(vcdev); vfio_ccw_put_device(vcdev); vfio_put_group(group); --=20 2.17.1