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