tests/qtest/libqos/virtio-rng.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 2.1 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 "qgraph.h"
  23 #include "virtio-rng.h"
  24
  25 /* virtio-rng-device */
  26 static void *qvirtio_rng_get_driver(QVirtioRng *v_rng,
  27                                     const char *interface)
  28 {
  29     if (!g_strcmp0(interface, "virtio-rng")) {
  30         return v_rng;
  31     }
  32     if (!g_strcmp0(interface, "virtio")) {
  33         return v_rng->vdev;
  34     }
  35
  36     fprintf(stderr, "%s not present in virtio-rng-device\n", interface);
  37     g_assert_not_reached();
  38 }
  39
  40 static void *qvirtio_rng_device_get_driver(void *object,
  41                                            const char *interface)
  42 {
  43     QVirtioRngDevice *v_rng = object;
  44     return qvirtio_rng_get_driver(&v_rng->rng, interface);
  45 }
  46
  47 static void *virtio_rng_device_create(void *virtio_dev,
  48                                       QGuestAllocator *t_alloc,
  49                                       void *addr)
  50 {
  51     QVirtioRngDevice *virtio_rdevice = g_new0(QVirtioRngDevice, 1);
  52     QVirtioRng *interface = &virtio_rdevice->rng;
  53
  54     interface->vdev = virtio_dev;
  55
  56     virtio_rdevice->obj.get_driver = qvirtio_rng_device_get_driver;
  57
  58     return &virtio_rdevice->obj;
  59 }
  60
  61 /* virtio-rng-pci */
  62 static void *qvirtio_rng_pci_get_driver(void *object, const char *interface)
  63 {
  64     QVirtioRngPCI *v_rng = object;
  65     if (!g_strcmp0(interface, "pci-device")) {
  66         return v_rng->pci_vdev.pdev;
  67     }
  68     return qvirtio_rng_get_driver(&v_rng->rng, interface);
  69 }
  70
  71 static void *virtio_rng_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
  72                                    void *addr)
  73 {
  74     QVirtioRngPCI *virtio_rpci = g_new0(QVirtioRngPCI, 1);
  75     QVirtioRng *interface = &virtio_rpci->rng;
  76     QOSGraphObject *obj = &virtio_rpci->pci_vdev.obj;
  77
  78     virtio_pci_init(&virtio_rpci->pci_vdev, pci_bus, addr);
  79     interface->vdev = &virtio_rpci->pci_vdev.vdev;
  80
  81     obj->get_driver = qvirtio_rng_pci_get_driver;
  82
  83     return obj;
  84 }
  85
  86 static void virtio_rng_register_nodes(void)
  87 {
  88     QPCIAddress addr = {
  89         .devfn = QPCI_DEVFN(4, 0),
  90     };
  91
  92     QOSGraphEdgeOptions opts = {
  93         .extra_device_opts = "addr=04.0",
  94     };
  95
  96     /* virtio-rng-device */
  97     qos_node_create_driver("virtio-rng-device", virtio_rng_device_create);
  98     qos_node_consumes("virtio-rng-device", "virtio-bus", NULL);
  99     qos_node_produces("virtio-rng-device", "virtio");
 100     qos_node_produces("virtio-rng-device", "virtio-rng");
 101
 102     /* virtio-rng-pci */
 103     add_qpci_address(&opts, &addr);
 104     qos_node_create_driver("virtio-rng-pci", virtio_rng_pci_create);
 105     qos_node_consumes("virtio-rng-pci", "pci-bus", &opts);
 106     qos_node_produces("virtio-rng-pci", "pci-device");
 107     qos_node_produces("virtio-rng-pci", "virtio");
 108     qos_node_produces("virtio-rng-pci", "virtio-rng");
 109 }
 110
 111 libqos_init(virtio_rng_register_nodes);