1 | /* |
2 | * This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so |
3 | * anyone can use the definitions to implement compatible drivers/servers: |
4 | * |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * 3. Neither the name of IBM nor the names of its contributors |
15 | * may be used to endorse or promote products derived from this software |
16 | * without specific prior written permission. |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND |
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
27 | * SUCH DAMAGE. |
28 | * |
29 | * Copyright (C) Red Hat, Inc., 2009, 2010, 2011 |
30 | * Copyright (C) Amit Shah <amit.shah@redhat.com>, 2009, 2010, 2011 |
31 | */ |
32 | #ifndef _UAPI_LINUX_VIRTIO_CONSOLE_H |
33 | #define _UAPI_LINUX_VIRTIO_CONSOLE_H |
34 | #include <linux/types.h> |
35 | #include <linux/virtio_types.h> |
36 | #include <linux/virtio_ids.h> |
37 | #include <linux/virtio_config.h> |
38 | |
39 | /* Feature bits */ |
40 | #define VIRTIO_CONSOLE_F_SIZE 0 /* Does host provide console size? */ |
41 | #define VIRTIO_CONSOLE_F_MULTIPORT 1 /* Does host provide multiple ports? */ |
42 | #define VIRTIO_CONSOLE_F_EMERG_WRITE 2 /* Does host support emergency write? */ |
43 | |
44 | #define VIRTIO_CONSOLE_BAD_ID (~(__u32)0) |
45 | |
46 | struct virtio_console_config { |
47 | /* colums of the screens */ |
48 | __virtio16 cols; |
49 | /* rows of the screens */ |
50 | __virtio16 rows; |
51 | /* max. number of ports this device can hold */ |
52 | __virtio32 max_nr_ports; |
53 | /* emergency write register */ |
54 | __virtio32 emerg_wr; |
55 | } __attribute__((packed)); |
56 | |
57 | /* |
58 | * A message that's passed between the Host and the Guest for a |
59 | * particular port. |
60 | */ |
61 | struct virtio_console_control { |
62 | __virtio32 id; /* Port number */ |
63 | __virtio16 event; /* The kind of control event (see below) */ |
64 | __virtio16 value; /* Extra information for the key */ |
65 | }; |
66 | |
67 | /* Some events for control messages */ |
68 | #define VIRTIO_CONSOLE_DEVICE_READY 0 |
69 | #define VIRTIO_CONSOLE_PORT_ADD 1 |
70 | #define VIRTIO_CONSOLE_PORT_REMOVE 2 |
71 | #define VIRTIO_CONSOLE_PORT_READY 3 |
72 | #define VIRTIO_CONSOLE_CONSOLE_PORT 4 |
73 | #define VIRTIO_CONSOLE_RESIZE 5 |
74 | #define VIRTIO_CONSOLE_PORT_OPEN 6 |
75 | #define VIRTIO_CONSOLE_PORT_NAME 7 |
76 | |
77 | |
78 | #endif /* _UAPI_LINUX_VIRTIO_CONSOLE_H */ |
79 | |