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vfio-user: implement VFIO_USER_DEVICE_RESET

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Hook this call up to the legacy reset handler for vfio-user-pci.

Originally-by: John Johnson <john.g.johnson@oracle.com>
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250625193012.2316242-13-john.levon@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
John Levon 2025-06-25 20:30:04 +01:00 • committed by Cédric Le Goater
parent 52ce9c35f8
commit 0192323581
3 changed files with 35 additions and 0 deletions
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18
hw/vfio-user/device.c
View file

@ -54,6 +54,24 @@ bool vfio_user_get_device_info(VFIOUserProxy *proxy,
return true;
}
void vfio_user_device_reset(VFIOUserProxy *proxy)
{
Error *local_err = NULL;
VFIOUserHdr hdr;
vfio_user_request_msg(&hdr, VFIO_USER_DEVICE_RESET, sizeof(hdr), 0);
if (!vfio_user_send_wait(proxy, &hdr, NULL, 0, &local_err)) {
error_prepend(&local_err, "%s: ", __func__);
error_report_err(local_err);
return;
}
if (hdr.flags & VFIO_USER_ERROR) {
error_printf("reset reply error %d\n", hdr.error_reply);
}
}
static int vfio_user_get_region_info(VFIOUserProxy *proxy,
struct vfio_region_info *info,
VFIOUserFDs *fds)

2
hw/vfio-user/device.h
View file

@ -17,6 +17,8 @@
bool vfio_user_get_device_info(VFIOUserProxy *proxy,
struct vfio_device_info *info, Error **errp);
void vfio_user_device_reset(VFIOUserProxy *proxy);
extern VFIODeviceIOOps vfio_user_device_io_ops_sock;
#endif /* VFIO_USER_DEVICE_H */

15
hw/vfio-user/pci.c
View file

@ -263,6 +263,20 @@ static void vfio_user_instance_finalize(Object *obj)
}
}
static void vfio_user_pci_reset(DeviceState *dev)
{
VFIOPCIDevice *vdev = VFIO_PCI_BASE(dev);
VFIODevice *vbasedev = &vdev->vbasedev;
vfio_pci_pre_reset(vdev);
if (vbasedev->reset_works) {
vfio_user_device_reset(vbasedev->proxy);
}
vfio_pci_post_reset(vdev);
}
static const Property vfio_user_pci_dev_properties[] = {
DEFINE_PROP_UINT32("x-pci-vendor-id", VFIOPCIDevice,
vendor_id, PCI_ANY_ID),
@ -310,6 +324,7 @@ static void vfio_user_pci_dev_class_init(ObjectClass *klass, const void *data)
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *pdc = PCI_DEVICE_CLASS(klass);
device_class_set_legacy_reset(dc, vfio_user_pci_reset);
device_class_set_props(dc, vfio_user_pci_dev_properties);
object_class_property_add(klass, "socket", "SocketAddress", NULL,