2017-11-01 22:09:13 +08:00
|
|
|
/* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
|
2015-10-25 04:10:29 +08:00
|
|
|
/*
|
|
|
|
|
* userio: virtual serio device support
|
|
|
|
|
* Copyright (C) 2015 Red Hat
|
|
|
|
|
* Copyright (C) 2015 Lyude (Stephen Chandler Paul) <cpaul@redhat.com>
|
|
|
|
|
*
|
|
|
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
|
|
|
* under the terms of the GNU Lesser General Public License as published by the
|
|
|
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
|
|
|
* option) any later version.
|
|
|
|
|
*
|
|
|
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
|
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
|
|
|
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
|
|
|
|
|
* details.
|
|
|
|
|
*
|
|
|
|
|
* This is the public header used for user-space communication with the userio
|
|
|
|
|
* driver. __attribute__((__packed__)) is used for all structs to keep ABI
|
|
|
|
|
* compatibility between all architectures.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef _USERIO_H
|
|
|
|
|
#define _USERIO_H
|
|
|
|
|
|
|
|
|
|
#include <linux/types.h>
|
|
|
|
|
|
|
|
|
|
enum userio_cmd_type {
|
|
|
|
|
USERIO_CMD_REGISTER = 0,
|
|
|
|
|
USERIO_CMD_SET_PORT_TYPE = 1,
|
|
|
|
|
USERIO_CMD_SEND_INTERRUPT = 2
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* userio Commands
|
|
|
|
|
* All commands sent to /dev/userio are encoded using this structure. The type
|
|
|
|
|
* field should contain a USERIO_CMD* value that indicates what kind of command
|
|
|
|
|
* is being sent to userio. The data field should contain the accompanying
|
|
|
|
|
* argument for the command, if there is one.
|
|
|
|
|
*/
|
|
|
|
|
struct userio_cmd {
|
|
|
|
|
__u8 type;
|
|
|
|
|
__u8 data;
|
|
|
|
|
} __attribute__((__packed__));
|
|
|
|
|
|
|
|
|
|
#endif /* !_USERIO_H */
|
