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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 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_blk.h"
#include "libqos/qgraph.h"
#include "libqos/virtio-blk.h"
#define PCI_SLOT 0x04
#define PCI_FN 0x00
/* virtio-blk-device */
static void *qvirtio_blk_get_driver(QVirtioBlk *v_blk,
const char *interface)
{
if (!g_strcmp0(interface, "virtio-blk")) {
return v_blk;
}
if (!g_strcmp0(interface, "virtio")) {
return v_blk->vdev;
}
fprintf(stderr, "%s not present in virtio-blk-device\n", interface);
g_assert_not_reached();
}
static void *qvirtio_blk_device_get_driver(void *object,
const char *interface)
{
QVirtioBlkDevice *v_blk = object;
return qvirtio_blk_get_driver(&v_blk->blk, interface);
}
static void *virtio_blk_device_create(void *virtio_dev,
QGuestAllocator *t_alloc,
void *addr)
{
QVirtioBlkDevice *virtio_blk = g_new0(QVirtioBlkDevice, 1);
QVirtioBlk *interface = &virtio_blk->blk;
interface->vdev = virtio_dev;
virtio_blk->obj.get_driver = qvirtio_blk_device_get_driver;
return &virtio_blk->obj;
}
/* virtio-blk-pci */
static void *qvirtio_blk_pci_get_driver(void *object, const char *interface)
{
QVirtioBlkPCI *v_blk = object;
if (!g_strcmp0(interface, "pci-device")) {
return v_blk->pci_vdev.pdev;
}
return qvirtio_blk_get_driver(&v_blk->blk, interface);
}
static void *virtio_blk_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
void *addr)
{
QVirtioBlkPCI *virtio_blk = g_new0(QVirtioBlkPCI, 1);
QVirtioBlk *interface = &virtio_blk->blk;
QOSGraphObject *obj = &virtio_blk->pci_vdev.obj;
virtio_pci_init(&virtio_blk->pci_vdev, pci_bus, addr);
interface->vdev = &virtio_blk->pci_vdev.vdev;
g_assert_cmphex(interface->vdev->device_type, ==, VIRTIO_ID_BLOCK);
obj->get_driver = qvirtio_blk_pci_get_driver;
return obj;
}
static void virtio_blk_register_nodes(void)
{
/* FIXME: every test using these two nodes needs to setup a
* -drive,id=drive0 otherwise QEMU is not going to start.
* Therefore, we do not include "produces" edge for virtio
* and pci-device yet.
*/
char *arg = g_strdup_printf("id=drv0,drive=drive0,addr=%x.%x",
PCI_SLOT, PCI_FN);
QPCIAddress addr = {
.devfn = QPCI_DEVFN(PCI_SLOT, PCI_FN),
};
QOSGraphEdgeOptions opts = { };
/* virtio-blk-device */
opts.extra_device_opts = "drive=drive0";
qos_node_create_driver("virtio-blk-device", virtio_blk_device_create);
qos_node_consumes("virtio-blk-device", "virtio-bus", &opts);
qos_node_produces("virtio-blk-device", "virtio-blk");
/* virtio-blk-pci */
opts.extra_device_opts = arg;
add_qpci_address(&opts, &addr);
qos_node_create_driver("virtio-blk-pci", virtio_blk_pci_create);
qos_node_consumes("virtio-blk-pci", "pci-bus", &opts);
qos_node_produces("virtio-blk-pci", "virtio-blk");
g_free(arg);
}
libqos_init(virtio_blk_register_nodes);
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