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1 | /* |
2 | * VirtioBus | |
3 | * | |
4 | * Copyright (C) 2012 : GreenSocs Ltd | |
5 | * http://www.greensocs.com/ , email: info@greensocs.com | |
6 | * | |
7 | * Developed by : | |
8 | * Frederic Konrad <fred.konrad@greensocs.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation, either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, see <http://www.gnu.org/licenses/>. | |
22 | * | |
23 | */ | |
24 | ||
25 | #ifndef VIRTIO_BUS_H | |
26 | #define VIRTIO_BUS_H | |
27 | ||
83c9f4ca | 28 | #include "hw/qdev.h" |
ff8eca55 | 29 | #include "sysemu/sysemu.h" |
83c9f4ca | 30 | #include "hw/virtio.h" |
ff8eca55 FK |
31 | |
32 | #define TYPE_VIRTIO_BUS "virtio-bus" | |
33 | #define VIRTIO_BUS_GET_CLASS(obj) \ | |
34 | OBJECT_GET_CLASS(VirtioBusClass, obj, TYPE_VIRTIO_BUS) | |
35 | #define VIRTIO_BUS_CLASS(klass) \ | |
36 | OBJECT_CLASS_CHECK(VirtioBusClass, klass, TYPE_VIRTIO_BUS) | |
37 | #define VIRTIO_BUS(obj) OBJECT_CHECK(VirtioBusState, (obj), TYPE_VIRTIO_BUS) | |
38 | ||
39 | typedef struct VirtioBusState VirtioBusState; | |
40 | ||
41 | typedef struct VirtioBusClass { | |
42 | /* This is what a VirtioBus must implement */ | |
43 | BusClass parent; | |
44 | void (*notify)(DeviceState *d, uint16_t vector); | |
45 | void (*save_config)(DeviceState *d, QEMUFile *f); | |
46 | void (*save_queue)(DeviceState *d, int n, QEMUFile *f); | |
47 | int (*load_config)(DeviceState *d, QEMUFile *f); | |
48 | int (*load_queue)(DeviceState *d, int n, QEMUFile *f); | |
49 | int (*load_done)(DeviceState *d, QEMUFile *f); | |
50 | unsigned (*get_features)(DeviceState *d); | |
51 | bool (*query_guest_notifiers)(DeviceState *d); | |
52 | int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assign); | |
53 | int (*set_host_notifier)(DeviceState *d, int n, bool assigned); | |
54 | void (*vmstate_change)(DeviceState *d, bool running); | |
55 | /* | |
56 | * transport independent init function. | |
57 | * This is called by virtio-bus just after the device is plugged. | |
58 | */ | |
59 | void (*device_plugged)(DeviceState *d); | |
60 | /* | |
61 | * transport independent exit function. | |
62 | * This is called by virtio-bus just before the device is unplugged. | |
63 | */ | |
64 | void (*device_unplug)(DeviceState *d); | |
65 | } VirtioBusClass; | |
66 | ||
67 | struct VirtioBusState { | |
68 | BusState parent_obj; | |
69 | /* | |
70 | * Only one VirtIODevice can be plugged on the bus. | |
71 | */ | |
72 | VirtIODevice *vdev; | |
73 | /* | |
74 | * This will be removed at the end of the series. | |
75 | */ | |
76 | VirtIOBindings bindings; | |
77 | }; | |
78 | ||
79 | int virtio_bus_plug_device(VirtIODevice *vdev); | |
80 | void virtio_bus_reset(VirtioBusState *bus); | |
81 | void virtio_bus_destroy_device(VirtioBusState *bus); | |
82 | /* Get the device id of the plugged device. */ | |
83 | uint16_t virtio_bus_get_vdev_id(VirtioBusState *bus); | |
84 | /* Get the config_len field of the plugged device. */ | |
85 | size_t virtio_bus_get_vdev_config_len(VirtioBusState *bus); | |
8e05db92 FK |
86 | /* Get the features of the plugged device. */ |
87 | uint32_t virtio_bus_get_vdev_features(VirtioBusState *bus, | |
88 | uint32_t requested_features); | |
89 | /* Get bad features of the plugged device. */ | |
90 | uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus); | |
91 | /* Get config of the plugged device. */ | |
92 | void virtio_bus_get_vdev_config(VirtioBusState *bus, uint8_t *config); | |
ff8eca55 FK |
93 | |
94 | #endif /* VIRTIO_BUS_H */ |