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bh=nCEYr0g8iKifbSomrbzERt12ywKfjc13Gkq1WTvOmtA=; b=SAuUH7Wp4MZmUgagX2fAhtgAUfPc+MTqVxV3Qusi16H900zTG7QRklTbnPb6IIeYt0D3Dl 3p0LYUYFOjfnHcNnROYm5fcdTW88NtM7tIZDOxXzh/BmY7G6tp4I9U/3hP/S0oVnwtNPFG ZIDYm8h1BxVfGbaHUWdYFb9J1juAcYY= X-MC-Unique: YE5ninsmNDWxOkaYKmZhIA-1 From: Cornelia Huck To: Peter Maydell Subject: [PULL 4/7] vfio-ccw: Refactor ccw irq handler Date: Thu, 18 Jun 2020 17:38:51 +0200 Message-Id: <20200618153854.271723-5-cohuck@redhat.com> In-Reply-To: <20200618153854.271723-1-cohuck@redhat.com> References: <20200618153854.271723-1-cohuck@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 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=205.139.110.120; envelope-from=cohuck@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/18 01:21:16 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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: Eric Farman , qemu-s390x@nongnu.org, Cornelia Huck , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: Eric Farman Make it easier to add new ones in the future. Signed-off-by: Eric Farman Reviewed-by: Cornelia Huck Message-Id: <20200505125757.98209-5-farman@linux.ibm.com> Signed-off-by: Cornelia Huck --- hw/vfio/ccw.c | 58 +++++++++++++++++++++++++++++++++++++-------------- 1 file changed, 42 insertions(+), 16 deletions(-) diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c index f5a5e038aa45..47e43ea6068c 100644 --- a/hw/vfio/ccw.c +++ b/hw/vfio/ccw.c @@ -324,22 +324,36 @@ 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) { @@ -347,37 +361,49 @@ 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) @@ -565,7 +591,7 @@ 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; } @@ -594,7 +620,7 @@ static void vfio_ccw_unrealize(DeviceState *dev) 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 2.25.4