LXR qemu/tests/libqos/virtio-serial.c

   1/*
   2 * libqos driver framework
   3 *
   4 * Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
   5 *
   6 * This library is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU Lesser General Public
   8 * License version 2 as published by the Free Software Foundation.
   9 *
  10 * This library is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 * Lesser General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU Lesser General Public
  16 * License along with this library; if not, see <http://www.gnu.org/licenses/>
  17 */
  18
  19#include "qemu/osdep.h"
  20#include "libqtest.h"
  21#include "qemu/module.h"
  22#include "libqos/qgraph.h"
  23#include "libqos/virtio-serial.h"
  24
  25static void *qvirtio_serial_get_driver(QVirtioSerial *v_serial,
  26                                       const char *interface)
  27{
  28    if (!g_strcmp0(interface, "virtio-serial")) {
  29        return v_serial;
  30    }
  31    if (!g_strcmp0(interface, "virtio")) {
  32        return v_serial->vdev;
  33    }
  34
  35    fprintf(stderr, "%s not present in virtio-serial-device\n", interface);
  36    g_assert_not_reached();
  37}
  38
  39static void *qvirtio_serial_device_get_driver(void *object,
  40                                              const char *interface)
  41{
  42    QVirtioSerialDevice *v_serial = object;
  43    return qvirtio_serial_get_driver(&v_serial->serial, interface);
  44}
  45
  46static void *virtio_serial_device_create(void *virtio_dev,
  47                                         QGuestAllocator *t_alloc,
  48                                         void *addr)
  49{
  50    QVirtioSerialDevice *virtio_device = g_new0(QVirtioSerialDevice, 1);
  51    QVirtioSerial *interface = &virtio_device->serial;
  52
  53    interface->vdev = virtio_dev;
  54
  55    virtio_device->obj.get_driver = qvirtio_serial_device_get_driver;
  56
  57    return &virtio_device->obj;
  58}
  59
  60/* virtio-serial-pci */
  61static void *qvirtio_serial_pci_get_driver(void *object, const char *interface)
  62{
  63    QVirtioSerialPCI *v_serial = object;
  64    if (!g_strcmp0(interface, "pci-device")) {
  65        return v_serial->pci_vdev.pdev;
  66    }
  67    return qvirtio_serial_get_driver(&v_serial->serial, interface);
  68}
  69
  70static void *virtio_serial_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
  71                                      void *addr)
  72{
  73    QVirtioSerialPCI *virtio_spci = g_new0(QVirtioSerialPCI, 1);
  74    QVirtioSerial *interface = &virtio_spci->serial;
  75    QOSGraphObject *obj = &virtio_spci->pci_vdev.obj;
  76
  77    virtio_pci_init(&virtio_spci->pci_vdev, pci_bus, addr);
  78    interface->vdev = &virtio_spci->pci_vdev.vdev;
  79
  80    obj->get_driver = qvirtio_serial_pci_get_driver;
  81
  82    return obj;
  83}
  84
  85static void virtio_serial_register_nodes(void)
  86{
  87   QPCIAddress addr = {
  88        .devfn = QPCI_DEVFN(4, 0),
  89    };
  90
  91    QOSGraphEdgeOptions edge_opts = { };
  92
  93    /* virtio-serial-device */
  94    edge_opts.extra_device_opts = "id=vser0";
  95    qos_node_create_driver("virtio-serial-device",
  96                            virtio_serial_device_create);
  97    qos_node_consumes("virtio-serial-device", "virtio-bus", &edge_opts);
  98    qos_node_produces("virtio-serial-device", "virtio");
  99    qos_node_produces("virtio-serial-device", "virtio-serial");
 100
 101    /* virtio-serial-pci */
 102    edge_opts.extra_device_opts = "id=vser0,addr=04.0";
 103    add_qpci_address(&edge_opts, &addr);
 104    qos_node_create_driver("virtio-serial-pci", virtio_serial_pci_create);
 105    qos_node_consumes("virtio-serial-pci", "pci-bus", &edge_opts);
 106    qos_node_produces("virtio-serial-pci", "pci-device");
 107    qos_node_produces("virtio-serial-pci", "virtio");
 108    qos_node_produces("virtio-serial-pci", "virtio-serial");
 109}
 110
 111libqos_init(virtio_serial_register_nodes);
 112