diff mbox series

[v7,16/17] vfio-user: handle reset of remote device

Message ID adcfac67f710d8ed447531a58b799792f7a8e492.1648234157.git.jag.raman@oracle.com
State New
Headers show
Series vfio-user server in QEMU | expand

Commit Message

Jag Raman March 25, 2022, 7:19 p.m. UTC 
Adds handler to reset a remote device

Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
---
 hw/remote/vfio-user-obj.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

Comments

Stefan Hajnoczi March 29, 2022, 2:46 p.m. UTC | #1 
On Fri, Mar 25, 2022 at 03:19:45PM -0400, Jagannathan Raman wrote:
> Adds handler to reset a remote device
> 
> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
> Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
> ---
>  hw/remote/vfio-user-obj.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
diff mbox series

Patch

diff --git a/hw/remote/vfio-user-obj.c b/hw/remote/vfio-user-obj.c
index 19d075a9dd..65e56d39fe 100644
--- a/hw/remote/vfio-user-obj.c
+++ b/hw/remote/vfio-user-obj.c
@@ -581,6 +581,20 @@  void vfu_object_set_bus_irq(PCIBus *pci_bus)
     pci_bus_irqs(pci_bus, vfu_object_set_irq, vfu_object_map_irq, pci_bus, 1);
 }
 
+static int vfu_object_device_reset(vfu_ctx_t *vfu_ctx, vfu_reset_type_t type)
+{
+    VfuObject *o = vfu_get_private(vfu_ctx);
+
+    /* vfu_object_ctx_run() handles lost connection */
+    if (type == VFU_RESET_LOST_CONN) {
+        return 0;
+    }
+
+    qdev_reset_all(DEVICE(o->pci_dev));
+
+    return 0;
+}
+
 /*
  * TYPE_VFU_OBJECT depends on the availability of the 'socket' and 'device'
  * properties. It also depends on devices instantiated in QEMU. These
@@ -686,6 +700,12 @@  static void vfu_object_init_ctx(VfuObject *o, Error **errp)
         goto fail;
     }
 
+    ret = vfu_setup_device_reset_cb(o->vfu_ctx, &vfu_object_device_reset);
+    if (ret < 0) {
+        error_setg(errp, "vfu: Failed to setup reset callback");
+        goto fail;
+    }
+
     ret = vfu_realize_ctx(o->vfu_ctx);
     if (ret < 0) {
         error_setg(errp, "vfu: Failed to realize device %s- %s",