| /* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */ | |
| /* | |
| * 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 */ |