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29241067 EGE |
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" | |
0b8fa32f | 21 | #include "qemu/module.h" |
29241067 EGE |
22 | #include "libqos/qgraph.h" |
23 | #include "libqos/virtio-balloon.h" | |
24 | ||
25 | /* virtio-balloon-device */ | |
26 | static void *qvirtio_balloon_get_driver(QVirtioBalloon *v_balloon, | |
27 | const char *interface) | |
28 | { | |
29 | if (!g_strcmp0(interface, "virtio-balloon")) { | |
30 | return v_balloon; | |
31 | } | |
32 | if (!g_strcmp0(interface, "virtio")) { | |
33 | return v_balloon->vdev; | |
34 | } | |
35 | ||
36 | fprintf(stderr, "%s not present in virtio-balloon-device\n", interface); | |
37 | g_assert_not_reached(); | |
38 | } | |
39 | ||
40 | static void *qvirtio_balloon_device_get_driver(void *object, | |
41 | const char *interface) | |
42 | { | |
43 | QVirtioBalloonDevice *v_balloon = object; | |
44 | return qvirtio_balloon_get_driver(&v_balloon->balloon, interface); | |
45 | } | |
46 | ||
47 | static void *virtio_balloon_device_create(void *virtio_dev, | |
48 | QGuestAllocator *t_alloc, | |
49 | void *addr) | |
50 | { | |
51 | QVirtioBalloonDevice *virtio_bdevice = g_new0(QVirtioBalloonDevice, 1); | |
52 | QVirtioBalloon *interface = &virtio_bdevice->balloon; | |
53 | ||
54 | interface->vdev = virtio_dev; | |
55 | ||
56 | virtio_bdevice->obj.get_driver = qvirtio_balloon_device_get_driver; | |
57 | ||
58 | return &virtio_bdevice->obj; | |
59 | } | |
60 | ||
61 | /* virtio-balloon-pci */ | |
62 | static void *qvirtio_balloon_pci_get_driver(void *object, | |
63 | const char *interface) | |
64 | { | |
65 | QVirtioBalloonPCI *v_balloon = object; | |
66 | if (!g_strcmp0(interface, "pci-device")) { | |
67 | return v_balloon->pci_vdev.pdev; | |
68 | } | |
69 | return qvirtio_balloon_get_driver(&v_balloon->balloon, interface); | |
70 | } | |
71 | ||
72 | static void *virtio_balloon_pci_create(void *pci_bus, QGuestAllocator *t_alloc, | |
73 | void *addr) | |
74 | { | |
75 | QVirtioBalloonPCI *virtio_bpci = g_new0(QVirtioBalloonPCI, 1); | |
76 | QVirtioBalloon *interface = &virtio_bpci->balloon; | |
77 | QOSGraphObject *obj = &virtio_bpci->pci_vdev.obj; | |
78 | ||
79 | ||
80 | virtio_pci_init(&virtio_bpci->pci_vdev, pci_bus, addr); | |
81 | interface->vdev = &virtio_bpci->pci_vdev.vdev; | |
82 | ||
83 | obj->get_driver = qvirtio_balloon_pci_get_driver; | |
84 | ||
85 | return obj; | |
86 | } | |
87 | ||
88 | static void virtio_balloon_register_nodes(void) | |
89 | { | |
90 | QPCIAddress addr = { | |
91 | .devfn = QPCI_DEVFN(4, 0), | |
92 | }; | |
93 | ||
94 | QOSGraphEdgeOptions opts = { | |
95 | .extra_device_opts = "addr=04.0", | |
96 | }; | |
97 | ||
98 | /* virtio-balloon-device */ | |
99 | qos_node_create_driver("virtio-balloon-device", | |
100 | virtio_balloon_device_create); | |
101 | qos_node_consumes("virtio-balloon-device", "virtio-bus", NULL); | |
102 | qos_node_produces("virtio-balloon-device", "virtio"); | |
103 | qos_node_produces("virtio-balloon-device", "virtio-balloon"); | |
104 | ||
105 | /* virtio-balloon-pci */ | |
106 | add_qpci_address(&opts, &addr); | |
107 | qos_node_create_driver("virtio-balloon-pci", virtio_balloon_pci_create); | |
108 | qos_node_consumes("virtio-balloon-pci", "pci-bus", &opts); | |
109 | qos_node_produces("virtio-balloon-pci", "pci-device"); | |
110 | qos_node_produces("virtio-balloon-pci", "virtio"); | |
111 | qos_node_produces("virtio-balloon-pci", "virtio-balloon"); | |
112 | } | |
113 | ||
114 | libqos_init(virtio_balloon_register_nodes); |