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/*
* libqos driver framework
*
* Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>
*/
#include "qemu/osdep.h"
#include "libqtest.h"
#include "qemu/module.h"
#include "standard-headers/linux/virtio_ids.h"
#include "virtio-9p.h"
#include "qgraph.h"
static QGuestAllocator *alloc;
static void virtio_9p_cleanup(QVirtio9P *interface)
{
qvirtqueue_cleanup(interface->vdev->bus, interface->vq, alloc);
}
static void virtio_9p_setup(QVirtio9P *interface)
{
uint64_t features;
features = qvirtio_get_features(interface->vdev);
features &= ~(QVIRTIO_F_BAD_FEATURE | (1ull << VIRTIO_RING_F_EVENT_IDX));
qvirtio_set_features(interface->vdev, features);
interface->vq = qvirtqueue_setup(interface->vdev, alloc, 0);
qvirtio_set_driver_ok(interface->vdev);
}
/* virtio-9p-device */
static void virtio_9p_device_destructor(QOSGraphObject *obj)
{
QVirtio9PDevice *v_9p = (QVirtio9PDevice *) obj;
QVirtio9P *v9p = &v_9p->v9p;
virtio_9p_cleanup(v9p);
}
static void virtio_9p_device_start_hw(QOSGraphObject *obj)
{
QVirtio9PDevice *v_9p = (QVirtio9PDevice *) obj;
QVirtio9P *v9p = &v_9p->v9p;
virtio_9p_setup(v9p);
}
static void *virtio_9p_get_driver(QVirtio9P *v_9p,
const char *interface)
{
if (!g_strcmp0(interface, "virtio-9p")) {
return v_9p;
}
if (!g_strcmp0(interface, "virtio")) {
return v_9p->vdev;
}
fprintf(stderr, "%s not present in virtio-9p-device\n", interface);
g_assert_not_reached();
}
static void *virtio_9p_device_get_driver(void *object, const char *interface)
{
QVirtio9PDevice *v_9p = object;
return virtio_9p_get_driver(&v_9p->v9p, interface);
}
static void *virtio_9p_device_create(void *virtio_dev,
QGuestAllocator *t_alloc,
void *addr)
{
QVirtio9PDevice *virtio_device = g_new0(QVirtio9PDevice, 1);
QVirtio9P *interface = &virtio_device->v9p;
interface->vdev = virtio_dev;
alloc = t_alloc;
virtio_device->obj.destructor = virtio_9p_device_destructor;
virtio_device->obj.get_driver = virtio_9p_device_get_driver;
virtio_device->obj.start_hw = virtio_9p_device_start_hw;
return &virtio_device->obj;
}
/* virtio-9p-pci */
static void virtio_9p_pci_destructor(QOSGraphObject *obj)
{
QVirtio9PPCI *v9_pci = (QVirtio9PPCI *) obj;
QVirtio9P *interface = &v9_pci->v9p;
QOSGraphObject *pci_vobj = &v9_pci->pci_vdev.obj;
virtio_9p_cleanup(interface);
qvirtio_pci_destructor(pci_vobj);
}
static void virtio_9p_pci_start_hw(QOSGraphObject *obj)
{
QVirtio9PPCI *v9_pci = (QVirtio9PPCI *) obj;
QVirtio9P *interface = &v9_pci->v9p;
QOSGraphObject *pci_vobj = &v9_pci->pci_vdev.obj;
qvirtio_pci_start_hw(pci_vobj);
virtio_9p_setup(interface);
}
static void *virtio_9p_pci_get_driver(void *object, const char *interface)
{
QVirtio9PPCI *v_9p = object;
if (!g_strcmp0(interface, "pci-device")) {
return v_9p->pci_vdev.pdev;
}
return virtio_9p_get_driver(&v_9p->v9p, interface);
}
static void *virtio_9p_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
void *addr)
{
QVirtio9PPCI *v9_pci = g_new0(QVirtio9PPCI, 1);
QVirtio9P *interface = &v9_pci->v9p;
QOSGraphObject *obj = &v9_pci->pci_vdev.obj;
virtio_pci_init(&v9_pci->pci_vdev, pci_bus, addr);
interface->vdev = &v9_pci->pci_vdev.vdev;
alloc = t_alloc;
g_assert_cmphex(interface->vdev->device_type, ==, VIRTIO_ID_9P);
obj->destructor = virtio_9p_pci_destructor;
obj->start_hw = virtio_9p_pci_start_hw;
obj->get_driver = virtio_9p_pci_get_driver;
return obj;
}
static void virtio_9p_register_nodes(void)
{
const char *str_simple = "fsdev=fsdev0,mount_tag=" MOUNT_TAG;
const char *str_addr = "fsdev=fsdev0,addr=04.0,mount_tag=" MOUNT_TAG;
QPCIAddress addr = {
.devfn = QPCI_DEVFN(4, 0),
};
QOSGraphEdgeOptions opts = {
.before_cmd_line = "-fsdev synth,id=fsdev0",
};
/* virtio-9p-device */
opts.extra_device_opts = str_simple,
qos_node_create_driver("virtio-9p-device", virtio_9p_device_create);
qos_node_consumes("virtio-9p-device", "virtio-bus", &opts);
qos_node_produces("virtio-9p-device", "virtio");
qos_node_produces("virtio-9p-device", "virtio-9p");
/* virtio-9p-pci */
opts.extra_device_opts = str_addr;
add_qpci_address(&opts, &addr);
qos_node_create_driver("virtio-9p-pci", virtio_9p_pci_create);
qos_node_consumes("virtio-9p-pci", "pci-bus", &opts);
qos_node_produces("virtio-9p-pci", "pci-device");
qos_node_produces("virtio-9p-pci", "virtio");
qos_node_produces("virtio-9p-pci", "virtio-9p");
}
libqos_init(virtio_9p_register_nodes);
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