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/*
* virtio-scmi nodes for testing
*
* SPDX-FileCopyrightText: Linaro Ltd
* SPDX-FileCopyrightText: Red Hat, Inc.
* SPDX-License-Identifier: GPL-2.0-or-later
*
* Based on virtio-gpio.c, doing basically the same thing.
*/
#include "qemu/osdep.h"
#include "standard-headers/linux/virtio_config.h"
#include "../libqtest.h"
#include "qemu/module.h"
#include "qgraph.h"
#include "virtio-scmi.h"
static QGuestAllocator *alloc;
static void virtio_scmi_cleanup(QVhostUserSCMI *scmi)
{
QVirtioDevice *vdev = scmi->vdev;
int i;
for (i = 0; i < 2; i++) {
qvirtqueue_cleanup(vdev->bus, scmi->queues[i], alloc);
}
g_free(scmi->queues);
}
/*
* This handles the VirtIO setup from the point of view of the driver
* frontend and therefore doesn't present any vhost specific features
* and in fact masks of the re-used bit.
*/
static void virtio_scmi_setup(QVhostUserSCMI *scmi)
{
QVirtioDevice *vdev = scmi->vdev;
uint64_t features;
int i;
features = qvirtio_get_features(vdev);
features &= ~QVIRTIO_F_BAD_FEATURE;
qvirtio_set_features(vdev, features);
scmi->queues = g_new(QVirtQueue *, 2);
for (i = 0; i < 2; i++) {
scmi->queues[i] = qvirtqueue_setup(vdev, alloc, i);
}
qvirtio_set_driver_ok(vdev);
}
static void *qvirtio_scmi_get_driver(QVhostUserSCMI *v_scmi,
const char *interface)
{
if (!g_strcmp0(interface, "vhost-user-scmi")) {
return v_scmi;
}
if (!g_strcmp0(interface, "virtio")) {
return v_scmi->vdev;
}
g_assert_not_reached();
}
static void *qvirtio_scmi_device_get_driver(void *object,
const char *interface)
{
QVhostUserSCMIDevice *v_scmi = object;
return qvirtio_scmi_get_driver(&v_scmi->scmi, interface);
}
/* virtio-scmi (mmio) */
static void qvirtio_scmi_device_destructor(QOSGraphObject *obj)
{
QVhostUserSCMIDevice *scmi_dev = (QVhostUserSCMIDevice *) obj;
virtio_scmi_cleanup(&scmi_dev->scmi);
}
static void qvirtio_scmi_device_start_hw(QOSGraphObject *obj)
{
QVhostUserSCMIDevice *scmi_dev = (QVhostUserSCMIDevice *) obj;
virtio_scmi_setup(&scmi_dev->scmi);
}
static void *virtio_scmi_device_create(void *virtio_dev,
QGuestAllocator *t_alloc,
void *addr)
{
QVhostUserSCMIDevice *virtio_device = g_new0(QVhostUserSCMIDevice, 1);
QVhostUserSCMI *interface = &virtio_device->scmi;
interface->vdev = virtio_dev;
alloc = t_alloc;
virtio_device->obj.get_driver = qvirtio_scmi_device_get_driver;
virtio_device->obj.start_hw = qvirtio_scmi_device_start_hw;
virtio_device->obj.destructor = qvirtio_scmi_device_destructor;
return &virtio_device->obj;
}
/* virtio-scmi-pci */
static void qvirtio_scmi_pci_destructor(QOSGraphObject *obj)
{
QVhostUserSCMIPCI *scmi_pci = (QVhostUserSCMIPCI *) obj;
QOSGraphObject *pci_vobj = &scmi_pci->pci_vdev.obj;
virtio_scmi_cleanup(&scmi_pci->scmi);
qvirtio_pci_destructor(pci_vobj);
}
static void qvirtio_scmi_pci_start_hw(QOSGraphObject *obj)
{
QVhostUserSCMIPCI *scmi_pci = (QVhostUserSCMIPCI *) obj;
QOSGraphObject *pci_vobj = &scmi_pci->pci_vdev.obj;
qvirtio_pci_start_hw(pci_vobj);
virtio_scmi_setup(&scmi_pci->scmi);
}
static void *qvirtio_scmi_pci_get_driver(void *object, const char *interface)
{
QVhostUserSCMIPCI *v_scmi = object;
if (!g_strcmp0(interface, "pci-device")) {
return v_scmi->pci_vdev.pdev;
}
return qvirtio_scmi_get_driver(&v_scmi->scmi, interface);
}
static void *virtio_scmi_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
void *addr)
{
QVhostUserSCMIPCI *virtio_spci = g_new0(QVhostUserSCMIPCI, 1);
QVhostUserSCMI *interface = &virtio_spci->scmi;
QOSGraphObject *obj = &virtio_spci->pci_vdev.obj;
virtio_pci_init(&virtio_spci->pci_vdev, pci_bus, addr);
interface->vdev = &virtio_spci->pci_vdev.vdev;
alloc = t_alloc;
obj->get_driver = qvirtio_scmi_pci_get_driver;
obj->start_hw = qvirtio_scmi_pci_start_hw;
obj->destructor = qvirtio_scmi_pci_destructor;
return obj;
}
static void virtio_scmi_register_nodes(void)
{
QPCIAddress addr = {
.devfn = QPCI_DEVFN(4, 0),
};
QOSGraphEdgeOptions edge_opts = { };
/* vhost-user-scmi-device */
edge_opts.extra_device_opts = "id=scmi,chardev=chr-vhost-user-test "
"-global virtio-mmio.force-legacy=false";
qos_node_create_driver("vhost-user-scmi-device",
virtio_scmi_device_create);
qos_node_consumes("vhost-user-scmi-device", "virtio-bus", &edge_opts);
qos_node_produces("vhost-user-scmi-device", "vhost-user-scmi");
/* virtio-scmi-pci */
edge_opts.extra_device_opts = "id=scmi,addr=04.0,chardev=chr-vhost-user-test";
add_qpci_address(&edge_opts, &addr);
qos_node_create_driver("vhost-user-scmi-pci", virtio_scmi_pci_create);
qos_node_consumes("vhost-user-scmi-pci", "pci-bus", &edge_opts);
qos_node_produces("vhost-user-scmi-pci", "vhost-user-scmi");
}
libqos_init(virtio_scmi_register_nodes);
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