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 */
qvirtio_rng_get_driver(QVirtioRng * v_rng,const char * interface)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
qvirtio_rng_device_get_driver(void * object,const char * interface)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
virtio_rng_device_create(void * virtio_dev,QGuestAllocator * t_alloc,void * addr)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 */
qvirtio_rng_pci_get_driver(void * object,const char * interface)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
virtio_rng_pci_create(void * pci_bus,QGuestAllocator * t_alloc,void * addr)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
virtio_rng_register_nodes(void)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);
112