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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 "libqos/qgraph.h"
#include "libqos/virtio-scsi.h"
/* virtio-scsi-device */
static void *qvirtio_scsi_get_driver(QVirtioSCSI *v_scsi,
const char *interface)
{
if (!g_strcmp0(interface, "virtio-scsi")) {
return v_scsi;
}
if (!g_strcmp0(interface, "virtio")) {
return v_scsi->vdev;
}
fprintf(stderr, "%s not present in virtio-scsi-device\n", interface);
g_assert_not_reached();
}
static void *qvirtio_scsi_device_get_driver(void *object,
const char *interface)
{
QVirtioSCSIDevice *v_scsi = object;
return qvirtio_scsi_get_driver(&v_scsi->scsi, interface);
}
static void *virtio_scsi_device_create(void *virtio_dev,
QGuestAllocator *t_alloc,
void *addr)
{
QVirtioSCSIDevice *virtio_bdevice = g_new0(QVirtioSCSIDevice, 1);
QVirtioSCSI *interface = &virtio_bdevice->scsi;
interface->vdev = virtio_dev;
virtio_bdevice->obj.get_driver = qvirtio_scsi_device_get_driver;
return &virtio_bdevice->obj;
}
/* virtio-scsi-pci */
static void *qvirtio_scsi_pci_get_driver(void *object,
const char *interface)
{
QVirtioSCSIPCI *v_scsi = object;
if (!g_strcmp0(interface, "pci-device")) {
return v_scsi->pci_vdev.pdev;
}
return qvirtio_scsi_get_driver(&v_scsi->scsi, interface);
}
static void *virtio_scsi_pci_create(void *pci_bus,
QGuestAllocator *t_alloc,
void *addr)
{
QVirtioSCSIPCI *virtio_spci = g_new0(QVirtioSCSIPCI, 1);
QVirtioSCSI *interface = &virtio_spci->scsi;
QOSGraphObject *obj = &virtio_spci->pci_vdev.obj;
virtio_pci_init(&virtio_spci->pci_vdev, pci_bus, addr);
interface->vdev = &virtio_spci->pci_vdev.vdev;
g_assert_cmphex(interface->vdev->device_type, ==, VIRTIO_ID_SCSI);
obj->get_driver = qvirtio_scsi_pci_get_driver;
return obj;
}
static void virtio_scsi_register_nodes(void)
{
QPCIAddress addr = {
.devfn = QPCI_DEVFN(4, 0),
};
QOSGraphEdgeOptions opts = {
.before_cmd_line = "-drive id=drv0,if=none,file=null-co://,"
"file.read-zeroes=on,format=raw",
.after_cmd_line = "-device scsi-hd,bus=vs0.0,drive=drv0",
};
/* virtio-scsi-device */
opts.extra_device_opts = "id=vs0";
qos_node_create_driver("virtio-scsi-device",
virtio_scsi_device_create);
qos_node_consumes("virtio-scsi-device", "virtio-bus", &opts);
qos_node_produces("virtio-scsi-device", "virtio-scsi");
/* virtio-scsi-pci */
opts.extra_device_opts = "id=vs0,addr=04.0";
add_qpci_address(&opts, &addr);
qos_node_create_driver("virtio-scsi-pci", virtio_scsi_pci_create);
qos_node_consumes("virtio-scsi-pci", "pci-bus", &opts);
qos_node_produces("virtio-scsi-pci", "pci-device");
qos_node_produces("virtio-scsi-pci", "virtio-scsi");
}
libqos_init(virtio_scsi_register_nodes);
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