79 lines
3.1 KiB
C
79 lines
3.1 KiB
C
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/*
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* This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
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* anyone can use the definitions to implement compatible drivers/servers:
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of IBM nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Copyright (C) Red Hat, Inc., 2009, 2010, 2011
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* Copyright (C) Amit Shah <amit.shah@redhat.com>, 2009, 2010, 2011
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*/
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#ifndef _LINUX_VIRTIO_CONSOLE_H
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#define _LINUX_VIRTIO_CONSOLE_H
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#include "standard-headers/linux/types.h"
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#include "standard-headers/linux/virtio_types.h"
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#include "standard-headers/linux/virtio_ids.h"
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#include "standard-headers/linux/virtio_config.h"
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/* Feature bits */
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#define VIRTIO_CONSOLE_F_SIZE 0 /* Does host provide console size? */
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#define VIRTIO_CONSOLE_F_MULTIPORT 1 /* Does host provide multiple ports? */
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#define VIRTIO_CONSOLE_F_EMERG_WRITE 2 /* Does host support emergency write? */
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#define VIRTIO_CONSOLE_BAD_ID (~(uint32_t)0)
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struct virtio_console_config {
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/* colums of the screens */
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uint16_t cols;
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/* rows of the screens */
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uint16_t rows;
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/* max. number of ports this device can hold */
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uint32_t max_nr_ports;
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/* emergency write register */
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uint32_t emerg_wr;
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} QEMU_PACKED;
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/*
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* A message that's passed between the Host and the Guest for a
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* particular port.
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*/
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struct virtio_console_control {
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__virtio32 id; /* Port number */
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__virtio16 event; /* The kind of control event (see below) */
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__virtio16 value; /* Extra information for the key */
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};
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/* Some events for control messages */
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#define VIRTIO_CONSOLE_DEVICE_READY 0
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#define VIRTIO_CONSOLE_PORT_ADD 1
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#define VIRTIO_CONSOLE_PORT_REMOVE 2
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#define VIRTIO_CONSOLE_PORT_READY 3
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#define VIRTIO_CONSOLE_CONSOLE_PORT 4
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#define VIRTIO_CONSOLE_RESIZE 5
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#define VIRTIO_CONSOLE_PORT_OPEN 6
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#define VIRTIO_CONSOLE_PORT_NAME 7
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#endif /* _LINUX_VIRTIO_CONSOLE_H */
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