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From 250227a53c1d43d2bd8346922edb3452f3534be6 Mon Sep 17 00:00:00 2001
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From: Thomas Huth <thuth@redhat.com>
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Date: Fri, 2 Oct 2020 10:17:42 -0400
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Subject: [PATCH 03/14] qga/commands-posix: Support fsinfo for non-PCI virtio
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devices, too
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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: Thomas Huth <thuth@redhat.com>
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Message-id: <20201002101742.249169-4-thuth@redhat.com>
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Patchwork-id: 98528
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O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 3/3] qga/commands-posix: Support fsinfo for non-PCI virtio devices, too
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Bugzilla: 1755075
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RH-Acked-by: Danilo de Paula <ddepaula@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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QEMU on s390x uses virtio via channel I/O instead of PCI by default.
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Add a function to detect and provide information for virtio-scsi and
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virtio-block devices here, too.
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
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(cherry picked from commit 23843c129d5e1ca360605e511a43a34faebb47c4)
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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qga/commands-posix.c | 42 +++++++++++++++++++++++++++++++++++++++++-
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1 file changed, 41 insertions(+), 1 deletion(-)
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diff --git a/qga/commands-posix.c b/qga/commands-posix.c
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index 6db76aadd1..c86c87ed52 100644
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--- a/qga/commands-posix.c
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+++ b/qga/commands-posix.c
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@@ -1000,6 +1000,39 @@ cleanup:
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return ret;
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}
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+/*
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+ * Store disk device info for non-PCI virtio devices (for example s390x
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+ * channel I/O devices). Returns true if information has been stored, or
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+ * false for failure.
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+ */
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+static bool build_guest_fsinfo_for_nonpci_virtio(char const *syspath,
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+ GuestDiskAddress *disk,
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+ Error **errp)
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+{
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+ unsigned int tgt[3];
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+ char *p;
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+
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+ if (!strstr(syspath, "/virtio") || !strstr(syspath, "/block")) {
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+ g_debug("Unsupported virtio device '%s'", syspath);
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+ return false;
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+ }
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+
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+ p = strstr(syspath, "/target");
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+ if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u",
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+ &tgt[0], &tgt[1], &tgt[2]) == 3) {
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+ /* virtio-scsi: target*:0:<target>:<unit> */
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+ disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI;
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+ disk->bus = tgt[0];
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+ disk->target = tgt[1];
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+ disk->unit = tgt[2];
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+ } else {
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+ /* virtio-blk: 1 disk per 1 device */
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+ disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO;
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+ }
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+
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+ return true;
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+}
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+
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/* Store disk device info specified by @sysfs into @fs */
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static void build_guest_fsinfo_for_real_device(char const *syspath,
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GuestFilesystemInfo *fs,
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@@ -1050,7 +1083,14 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
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udev_device_unref(udevice);
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#endif
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- has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp);
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+ if (strstr(syspath, "/devices/pci")) {
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+ has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp);
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+ } else if (strstr(syspath, "/virtio")) {
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+ has_hwinf = build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp);
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+ } else {
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+ g_debug("Unsupported device type for '%s'", syspath);
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+ has_hwinf = false;
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+ }
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if (has_hwinf || disk->has_dev || disk->has_serial) {
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list->next = fs->disk;
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--
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2.27.0
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