1 /*- 2 * This header is BSD licensed so anyone can use the definitions to implement 3 * compatible drivers/servers. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of IBM nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * Copyright (C) Red Hat, Inc., 2009, 2010, 2011 29 * Copyright (C) Amit Shah <amit.shah@redhat.com>, 2009, 2010, 2011 30 * 31 * $FreeBSD$ 32 */ 33 34 #ifndef _VIRTIO_CONSOLE_H 35 #define _VIRTIO_CONSOLE_H 36 37 /* Feature bits */ 38 #define VIRTIO_CONSOLE_F_SIZE 0x01 /* Console size */ 39 #define VIRTIO_CONSOLE_F_MULTIPORT 0x02 /* Multiple ports */ 40 #define VIRTIO_CONSOLE_F_EMERG_WRITE 0x04 /* Emergency write */ 41 42 #define VIRTIO_CONSOLE_BAD_ID (~(uint32_t)0) 43 44 struct virtio_console_config { 45 /* colums of the screens */ 46 uint16_t cols; 47 /* rows of the screens */ 48 uint16_t rows; 49 /* max. number of ports this device can hold */ 50 uint32_t max_nr_ports; 51 /* emergency write register */ 52 uint32_t emerg_wr; 53 } __packed; 54 55 /* 56 * A message that's passed between the Host and the Guest for a 57 * particular port. 58 */ 59 struct virtio_console_control { 60 uint32_t id; /* Port number */ 61 uint16_t event; /* The kind of control event (see below) */ 62 uint16_t value; /* Extra information for the key */ 63 }; 64 65 /* Some events for control messages */ 66 #define VIRTIO_CONSOLE_DEVICE_READY 0 67 #define VIRTIO_CONSOLE_PORT_ADD 1 68 #define VIRTIO_CONSOLE_PORT_REMOVE 2 69 #define VIRTIO_CONSOLE_PORT_READY 3 70 #define VIRTIO_CONSOLE_CONSOLE_PORT 4 71 #define VIRTIO_CONSOLE_RESIZE 5 72 #define VIRTIO_CONSOLE_PORT_OPEN 6 73 #define VIRTIO_CONSOLE_PORT_NAME 7 74 75 #endif /* _VIRTIO_CONSOLE_H */ 76