74 lines
2.9 KiB
Diff
74 lines
2.9 KiB
Diff
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From 6c815e78cea7c26e9a3526cbb686f728eac31021 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>
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Date: Tue, 23 May 2023 12:34:33 +0200
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Subject: [PATCH 12/22] s390x: follow qdev tree to detect SCSI device on a CCW
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bus
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Cédric Le Goater <clg@redhat.com>
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RH-MergeRequest: 279: Backport latest s390x-related fixes from upstream QEMU for qemu-kvm in RHEL 8.9
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RH-Bugzilla: 2169308 2209605
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Commit: [11/21] 97303bc9c356e8828d185868736b395bc0b70214
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Bugzilla: https://bugzilla.redhat.com/2169308
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commit 7d2eb76d0407fc391b78df16d17f1e616ec3e228
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Author: Paolo Bonzini <pbonzini@redhat.com>
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Date: Mon Mar 28 09:40:00 2022 +0200
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s390x: follow qdev tree to detect SCSI device on a CCW bus
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Do not make assumptions on the parent type of the SCSIDevice, instead
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use object_dynamic_cast all the way up to the CcwDevice. This is cleaner
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because there is no guarantee that the bus is on a virtio-scsi device;
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that is only the case for the default configuration of QEMU's s390x
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target.
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Reviewed-by: Thomas Huth <thuth@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Cédric Le Goater <clg@redhat.com>
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---
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hw/s390x/ipl.c | 20 ++++++++++++--------
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1 file changed, 12 insertions(+), 8 deletions(-)
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diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
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index eb7fc4c4ae..9051d8652d 100644
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--- a/hw/s390x/ipl.c
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+++ b/hw/s390x/ipl.c
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@@ -376,14 +376,18 @@ static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype)
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object_dynamic_cast(OBJECT(dev_st),
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TYPE_SCSI_DEVICE);
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if (sd) {
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- SCSIBus *bus = scsi_bus_from_device(sd);
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- VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus);
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- VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw,
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- vdev);
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-
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- ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw),
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- TYPE_CCW_DEVICE);
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- tmp_dt = CCW_DEVTYPE_SCSI;
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+ SCSIBus *sbus = scsi_bus_from_device(sd);
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+ VirtIODevice *vdev = (VirtIODevice *)
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+ object_dynamic_cast(OBJECT(sbus->qbus.parent),
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+ TYPE_VIRTIO_DEVICE);
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+ if (vdev) {
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+ ccw_dev = (CcwDevice *)
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+ object_dynamic_cast(OBJECT(qdev_get_parent_bus(DEVICE(vdev))->parent),
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+ TYPE_CCW_DEVICE);
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+ if (ccw_dev) {
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+ tmp_dt = CCW_DEVTYPE_SCSI;
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+ }
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+ }
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}
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}
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}
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--
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2.37.3
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