@samitouri / QOSamiQemu
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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-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);