mirror of https://gitee.com/openkylin/qemu.git
114 lines
3.7 KiB
C
114 lines
3.7 KiB
C
/*
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* libqos driver framework
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*
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* Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>
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*/
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#include "qemu/osdep.h"
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#include "libqtest.h"
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#include "libqos/qgraph.h"
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#include "libqos/virtio-balloon.h"
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/* virtio-balloon-device */
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static void *qvirtio_balloon_get_driver(QVirtioBalloon *v_balloon,
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const char *interface)
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{
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if (!g_strcmp0(interface, "virtio-balloon")) {
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return v_balloon;
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}
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if (!g_strcmp0(interface, "virtio")) {
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return v_balloon->vdev;
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}
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fprintf(stderr, "%s not present in virtio-balloon-device\n", interface);
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g_assert_not_reached();
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}
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static void *qvirtio_balloon_device_get_driver(void *object,
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const char *interface)
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{
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QVirtioBalloonDevice *v_balloon = object;
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return qvirtio_balloon_get_driver(&v_balloon->balloon, interface);
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}
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static void *virtio_balloon_device_create(void *virtio_dev,
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QGuestAllocator *t_alloc,
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void *addr)
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{
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QVirtioBalloonDevice *virtio_bdevice = g_new0(QVirtioBalloonDevice, 1);
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QVirtioBalloon *interface = &virtio_bdevice->balloon;
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interface->vdev = virtio_dev;
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virtio_bdevice->obj.get_driver = qvirtio_balloon_device_get_driver;
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return &virtio_bdevice->obj;
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}
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/* virtio-balloon-pci */
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static void *qvirtio_balloon_pci_get_driver(void *object,
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const char *interface)
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{
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QVirtioBalloonPCI *v_balloon = object;
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if (!g_strcmp0(interface, "pci-device")) {
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return v_balloon->pci_vdev.pdev;
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}
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return qvirtio_balloon_get_driver(&v_balloon->balloon, interface);
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}
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static void *virtio_balloon_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
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void *addr)
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{
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QVirtioBalloonPCI *virtio_bpci = g_new0(QVirtioBalloonPCI, 1);
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QVirtioBalloon *interface = &virtio_bpci->balloon;
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QOSGraphObject *obj = &virtio_bpci->pci_vdev.obj;
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virtio_pci_init(&virtio_bpci->pci_vdev, pci_bus, addr);
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interface->vdev = &virtio_bpci->pci_vdev.vdev;
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obj->get_driver = qvirtio_balloon_pci_get_driver;
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return obj;
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}
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static void virtio_balloon_register_nodes(void)
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{
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QPCIAddress addr = {
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.devfn = QPCI_DEVFN(4, 0),
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};
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QOSGraphEdgeOptions opts = {
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.extra_device_opts = "addr=04.0",
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};
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/* virtio-balloon-device */
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qos_node_create_driver("virtio-balloon-device",
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virtio_balloon_device_create);
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qos_node_consumes("virtio-balloon-device", "virtio-bus", NULL);
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qos_node_produces("virtio-balloon-device", "virtio");
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qos_node_produces("virtio-balloon-device", "virtio-balloon");
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/* virtio-balloon-pci */
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add_qpci_address(&opts, &addr);
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qos_node_create_driver("virtio-balloon-pci", virtio_balloon_pci_create);
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qos_node_consumes("virtio-balloon-pci", "pci-bus", &opts);
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qos_node_produces("virtio-balloon-pci", "pci-device");
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qos_node_produces("virtio-balloon-pci", "virtio");
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qos_node_produces("virtio-balloon-pci", "virtio-balloon");
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}
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libqos_init(virtio_balloon_register_nodes);
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