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 "libqos/qgraph.h"
  22 #include "libqos/virtio-serial.h"
  23
  24 static void *qvirtio_serial_get_driver(QVirtioSerial *v_serial,
  25                                        const char *interface)
  26 {
  27     if (!g_strcmp0(interface, "virtio-serial")) {
  28         return v_serial;
  29     }
  30     if (!g_strcmp0(interface, "virtio")) {
  31         return v_serial->vdev;
  32     }
  33
  34     fprintf(stderr, "%s not present in virtio-serial-device\n", interface);
  35     g_assert_not_reached();
  36 }
  37
  38 static void *qvirtio_serial_device_get_driver(void *object,
  39                                               const char *interface)
  40 {
  41     QVirtioSerialDevice *v_serial = object;
  42     return qvirtio_serial_get_driver(&v_serial->serial, interface);
  43 }
  44
  45 static void *virtio_serial_device_create(void *virtio_dev,
  46                                          QGuestAllocator *t_alloc,
  47                                          void *addr)
  48 {
  49     QVirtioSerialDevice *virtio_device = g_new0(QVirtioSerialDevice, 1);
  50     QVirtioSerial *interface = &virtio_device->serial;
  51
  52     interface->vdev = virtio_dev;
  53
  54     virtio_device->obj.get_driver = qvirtio_serial_device_get_driver;
  55
  56     return &virtio_device->obj;
  57 }
  58
  59 /* virtio-serial-pci */
  60 static void *qvirtio_serial_pci_get_driver(void *object, const char *interface)
  61 {
  62     QVirtioSerialPCI *v_serial = object;
  63     if (!g_strcmp0(interface, "pci-device")) {
  64         return v_serial->pci_vdev.pdev;
  65     }
  66     return qvirtio_serial_get_driver(&v_serial->serial, interface);
  67 }
  68
  69 static void *virtio_serial_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
  70                                       void *addr)
  71 {
  72     QVirtioSerialPCI *virtio_spci = g_new0(QVirtioSerialPCI, 1);
  73     QVirtioSerial *interface = &virtio_spci->serial;
  74     QOSGraphObject *obj = &virtio_spci->pci_vdev.obj;
  75
  76     virtio_pci_init(&virtio_spci->pci_vdev, pci_bus, addr);
  77     interface->vdev = &virtio_spci->pci_vdev.vdev;
  78
  79     obj->get_driver = qvirtio_serial_pci_get_driver;
  80
  81     return obj;
  82 }
  83
  84 static void virtio_serial_register_nodes(void)
  85 {
  86    QPCIAddress addr = {
  87         .devfn = QPCI_DEVFN(4, 0),
  88     };
  89
  90     QOSGraphEdgeOptions edge_opts = { };
  91
  92     /* virtio-serial-device */
  93     edge_opts.extra_device_opts = "id=vser0";
  94     qos_node_create_driver("virtio-serial-device",
  95                             virtio_serial_device_create);
  96     qos_node_consumes("virtio-serial-device", "virtio-bus", &edge_opts);
  97     qos_node_produces("virtio-serial-device", "virtio");
  98     qos_node_produces("virtio-serial-device", "virtio-serial");
  99
 100     /* virtio-serial-pci */
 101     edge_opts.extra_device_opts = "id=vser0,addr=04.0";
 102     add_qpci_address(&edge_opts, &addr);
 103     qos_node_create_driver("virtio-serial-pci", virtio_serial_pci_create);
 104     qos_node_consumes("virtio-serial-pci", "pci-bus", &edge_opts);
 105     qos_node_produces("virtio-serial-pci", "pci-device");
 106     qos_node_produces("virtio-serial-pci", "virtio");
 107     qos_node_produces("virtio-serial-pci", "virtio-serial");
 108 }
 109
 110 libqos_init(virtio_serial_register_nodes);