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Subject: [PATCH v8 23/28] vfio-user: implement VFIO_USER_DEVICE_RESET
Date: Wed, 19 Feb 2025 15:48:53 +0100
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From: Jagannathan Raman <jag.raman@oracle.com>
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>
---
hw/vfio-user/common.c | 12 ++++++++++++
hw/vfio-user/common.h | 1 +
hw/vfio-user/pci.c | 15 +++++++++++++++
3 files changed, 28 insertions(+)
diff --git a/hw/vfio-user/common.c b/hw/vfio-user/common.c
index 182ef5ab8f..160a1f0536 100644
--- a/hw/vfio-user/common.c
+++ b/hw/vfio-user/common.c
@@ -1362,6 +1362,18 @@ static int vfio_user_region_write(VFIOUserProxy *pro=
xy, uint8_t index,
return ret;
}
=20
+void vfio_user_reset(VFIOUserProxy *proxy)
+{
+ VFIOUserHdr msg;
+
+ vfio_user_request_msg(&msg, VFIO_USER_DEVICE_RESET, sizeof(msg), 0);
+
+ vfio_user_send_wait(proxy, &msg, NULL, 0);
+ if (msg.flags & VFIO_USER_ERROR) {
+ error_printf("reset reply error %d\n", msg.error_reply);
+ }
+}
+
=20
/*
* Socket-based io_ops
diff --git a/hw/vfio-user/common.h b/hw/vfio-user/common.h
index 31b11ed614..c09637dd48 100644
--- a/hw/vfio-user/common.h
+++ b/hw/vfio-user/common.h
@@ -95,6 +95,7 @@ void vfio_user_set_handler(VFIODevice *vbasedev,
void *reqarg);
bool vfio_user_validate_version(VFIOUserProxy *proxy, Error **errp);
int vfio_user_get_info(VFIOUserProxy *proxy, struct vfio_device_info *info=
);
+void vfio_user_reset(VFIOUserProxy *proxy);
=20
extern VFIODeviceIO vfio_dev_io_sock;
=20
diff --git a/hw/vfio-user/pci.c b/hw/vfio-user/pci.c
index cf1e642399..d520b7592b 100644
--- a/hw/vfio-user/pci.c
+++ b/hw/vfio-user/pci.c
@@ -276,6 +276,20 @@ static void vfio_user_instance_finalize(Object *obj)
}
}
=20
+static void vfio_user_pci_reset(DeviceState *dev)
+{
+ VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(dev);
+ VFIODevice *vbasedev =3D &vdev->vbasedev;
+
+ vfio_pci_pre_reset(vdev);
+
+ if (vbasedev->reset_works) {
+ vfio_user_reset(vbasedev->proxy);
+ }
+
+ vfio_pci_post_reset(vdev);
+}
+
static const Property vfio_user_pci_dev_properties[] =3D {
DEFINE_PROP_STRING("socket", VFIOUserPCIDevice, sock_name),
DEFINE_PROP_BOOL("x-send-queued", VFIOUserPCIDevice, send_queued, fals=
e),
@@ -287,6 +301,7 @@ static void vfio_user_pci_dev_class_init(ObjectClass *k=
lass, void *data)
DeviceClass *dc =3D DEVICE_CLASS(klass);
PCIDeviceClass *pdc =3D PCI_DEVICE_CLASS(klass);
=20
+ device_class_set_legacy_reset(dc, vfio_user_pci_reset);
device_class_set_props(dc, vfio_user_pci_dev_properties);
dc->desc =3D "VFIO over socket PCI device assignment";
pdc->realize =3D vfio_user_pci_realize;
--=20
2.34.1