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/*
* libqos driver virtio-iommu-pci framework
*
* Copyright (c) 2021 Red Hat, Inc.
*
* Authors:
* Eric Auger <eric.auger@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at your
* option) any later version. See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "../libqtest.h"
#include "qemu/module.h"
#include "qgraph.h"
#include "virtio-iommu.h"
#include "hw/virtio/virtio-iommu.h"
static QGuestAllocator *alloc;
/* virtio-iommu-device */
static void *qvirtio_iommu_get_driver(QVirtioIOMMU *v_iommu,
const char *interface)
{
if (!g_strcmp0(interface, "virtio-iommu")) {
return v_iommu;
}
if (!g_strcmp0(interface, "virtio")) {
return v_iommu->vdev;
}
fprintf(stderr, "%s not present in virtio-iommu-device\n", interface);
g_assert_not_reached();
}
static void virtio_iommu_cleanup(QVirtioIOMMU *interface)
{
qvirtqueue_cleanup(interface->vdev->bus, interface->vq, alloc);
}
static void virtio_iommu_setup(QVirtioIOMMU *interface)
{
QVirtioDevice *vdev = interface->vdev;
uint64_t features;
features = qvirtio_get_features(vdev);
features &= ~(QVIRTIO_F_BAD_FEATURE |
(1ull << VIRTIO_RING_F_INDIRECT_DESC) |
(1ull << VIRTIO_RING_F_EVENT_IDX) |
(1ull << VIRTIO_IOMMU_F_BYPASS));
qvirtio_set_features(vdev, features);
interface->vq = qvirtqueue_setup(interface->vdev, alloc, 0);
qvirtio_set_driver_ok(interface->vdev);
}
/* virtio-iommu-pci */
static void *qvirtio_iommu_pci_get_driver(void *object, const char *interface)
{
QVirtioIOMMUPCI *v_iommu = object;
if (!g_strcmp0(interface, "pci-device")) {
return v_iommu->pci_vdev.pdev;
}
return qvirtio_iommu_get_driver(&v_iommu->iommu, interface);
}
static void qvirtio_iommu_pci_destructor(QOSGraphObject *obj)
{
QVirtioIOMMUPCI *iommu_pci = (QVirtioIOMMUPCI *) obj;
QVirtioIOMMU *interface = &iommu_pci->iommu;
QOSGraphObject *pci_vobj = &iommu_pci->pci_vdev.obj;
virtio_iommu_cleanup(interface);
qvirtio_pci_destructor(pci_vobj);
}
static void qvirtio_iommu_pci_start_hw(QOSGraphObject *obj)
{
QVirtioIOMMUPCI *iommu_pci = (QVirtioIOMMUPCI *) obj;
QVirtioIOMMU *interface = &iommu_pci->iommu;
QOSGraphObject *pci_vobj = &iommu_pci->pci_vdev.obj;
qvirtio_pci_start_hw(pci_vobj);
virtio_iommu_setup(interface);
}
static void *virtio_iommu_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
void *addr)
{
QVirtioIOMMUPCI *virtio_rpci = g_new0(QVirtioIOMMUPCI, 1);
QVirtioIOMMU *interface = &virtio_rpci->iommu;
QOSGraphObject *obj = &virtio_rpci->pci_vdev.obj;
virtio_pci_init(&virtio_rpci->pci_vdev, pci_bus, addr);
interface->vdev = &virtio_rpci->pci_vdev.vdev;
alloc = t_alloc;
obj->get_driver = qvirtio_iommu_pci_get_driver;
obj->start_hw = qvirtio_iommu_pci_start_hw;
obj->destructor = qvirtio_iommu_pci_destructor;
return obj;
}
static void virtio_iommu_register_nodes(void)
{
QPCIAddress addr = {
.devfn = QPCI_DEVFN(4, 0),
};
QOSGraphEdgeOptions opts = {
.extra_device_opts = "addr=04.0",
};
/* virtio-iommu-pci */
add_qpci_address(&opts, &addr);
qos_node_create_driver("virtio-iommu-pci", virtio_iommu_pci_create);
qos_node_consumes("virtio-iommu-pci", "pci-bus", &opts);
qos_node_produces("virtio-iommu-pci", "pci-device");
qos_node_produces("virtio-iommu-pci", "virtio");
qos_node_produces("virtio-iommu-pci", "virtio-iommu");
}
libqos_init(virtio_iommu_register_nodes);
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