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/*
* Copyright © 2018, 2021 Oracle and/or its affiliates.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "hw/remote/proxy.h"
#include "hw/pci/pci.h"
#include "qapi/error.h"
#include "io/channel-util.h"
#include "hw/qdev-properties.h"
#include "monitor/monitor.h"
#include "migration/blocker.h"
#include "qemu/sockets.h"
static void pci_proxy_dev_realize(PCIDevice *device, Error **errp)
{
ERRP_GUARD();
PCIProxyDev *dev = PCI_PROXY_DEV(device);
int fd;
if (!dev->fd) {
error_setg(errp, "fd parameter not specified for %s",
DEVICE(device)->id);
return;
}
fd = monitor_fd_param(monitor_cur(), dev->fd, errp);
if (fd == -1) {
error_prepend(errp, "proxy: unable to parse fd %s: ", dev->fd);
return;
}
if (!fd_is_socket(fd)) {
error_setg(errp, "proxy: fd %d is not a socket", fd);
close(fd);
return;
}
dev->ioc = qio_channel_new_fd(fd, errp);
error_setg(&dev->migration_blocker, "%s does not support migration",
TYPE_PCI_PROXY_DEV);
migrate_add_blocker(dev->migration_blocker, errp);
qemu_mutex_init(&dev->io_mutex);
qio_channel_set_blocking(dev->ioc, true, NULL);
}
static void pci_proxy_dev_exit(PCIDevice *pdev)
{
PCIProxyDev *dev = PCI_PROXY_DEV(pdev);
if (dev->ioc) {
qio_channel_close(dev->ioc, NULL);
}
migrate_del_blocker(dev->migration_blocker);
error_free(dev->migration_blocker);
}
static Property proxy_properties[] = {
DEFINE_PROP_STRING("fd", PCIProxyDev, fd),
DEFINE_PROP_END_OF_LIST(),
};
static void pci_proxy_dev_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->realize = pci_proxy_dev_realize;
k->exit = pci_proxy_dev_exit;
device_class_set_props(dc, proxy_properties);
}
static const TypeInfo pci_proxy_dev_type_info = {
.name = TYPE_PCI_PROXY_DEV,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCIProxyDev),
.class_init = pci_proxy_dev_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void pci_proxy_dev_register_types(void)
{
type_register_static(&pci_proxy_dev_type_info);
}
type_init(pci_proxy_dev_register_types)
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