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 __u16 cols; 49 /* rows of the screens */ 50 __u16 rows; 51 /* max. number of ports this device can hold */ 52 __u32 max_nr_ports; 53 /* emergency write register */ 54 __u32 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