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[RFC v5 20/23] vfio-user: pci reset
From: |
John Johnson |
Subject: |
[RFC v5 20/23] vfio-user: pci reset |
Date: |
Thu, 5 May 2022 10:20:03 -0700 |
Message to tell the server to reset the 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/vfio/user.h | 1 +
hw/vfio/pci.c | 15 +++++++++++++++
hw/vfio/user.c | 12 ++++++++++++
3 files changed, 28 insertions(+)
diff --git a/hw/vfio/user.h b/hw/vfio/user.h
index 412c77a..902facf 100644
--- a/hw/vfio/user.h
+++ b/hw/vfio/user.h
@@ -90,6 +90,7 @@ void vfio_user_send_reply(VFIOProxy *proxy, VFIOUserHdr *hdr,
int size);
void vfio_user_send_error(VFIOProxy *proxy, VFIOUserHdr *hdr, int error);
void vfio_user_putfds(VFIOUserMsg *msg);
int vfio_user_validate_version(VFIODevice *vbasedev, Error **errp);
+void vfio_user_reset(VFIOProxy *proxy);
extern VFIODevIO vfio_dev_io_sock;
extern VFIOContIO vfio_cont_io_sock;
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 25b3ebb..f4b4a30 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -3821,6 +3821,20 @@ 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_reset(vbasedev->proxy);
+ }
+
+ vfio_pci_post_reset(vdev);
+}
+
static Property vfio_user_pci_dev_properties[] = {
DEFINE_PROP_STRING("socket", VFIOUserPCIDevice, sock_name),
DEFINE_PROP_BOOL("secure-dma", VFIOUserPCIDevice, secure_dma, false),
@@ -3834,6 +3848,7 @@ static void vfio_user_pci_dev_class_init(ObjectClass
*klass, void *data)
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *pdc = PCI_DEVICE_CLASS(klass);
+ dc->reset = vfio_user_pci_reset;
device_class_set_props(dc, vfio_user_pci_dev_properties);
dc->desc = "VFIO over socket PCI device assignment";
pdc->realize = vfio_user_pci_realize;
diff --git a/hw/vfio/user.c b/hw/vfio/user.c
index 1a0d002..262d1a7 100644
--- a/hw/vfio/user.c
+++ b/hw/vfio/user.c
@@ -1482,6 +1482,18 @@ static int vfio_user_region_write(VFIOProxy *proxy,
uint8_t index, off_t offset,
return ret;
}
+void vfio_user_reset(VFIOProxy *proxy)
+{
+ VFIOUserHdr msg;
+
+ vfio_user_request_msg(&msg, VFIO_USER_DEVICE_RESET, sizeof(msg), 0);
+
+ vfio_user_send_wait(proxy, &msg, NULL, 0, false);
+ if (msg.flags & VFIO_USER_ERROR) {
+ error_printf("reset reply error %d\n", msg.error_reply);
+ }
+}
+
/*
* Socket-based io_ops
--
1.8.3.1
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