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
  25 static 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
  39 static 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
  46 static 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 */
  61 static 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
  70 static 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
  85 static 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
 111 libqos_init(virtio_serial_register_nodes);