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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1991 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)cons.h 7.2 (Berkeley) 5/9/91
* $FreeBSD$
*/
#ifndef _MACHINE_CONS_H_
#define _MACHINE_CONS_H_
struct consdev;
struct tty;
typedef void cn_probe_t(struct consdev *);
typedef void cn_init_t(struct consdev *);
typedef void cn_term_t(struct consdev *);
typedef void cn_grab_t(struct consdev *);
typedef void cn_ungrab_t(struct consdev *);
typedef int cn_getc_t(struct consdev *);
typedef void cn_putc_t(struct consdev *, int);
struct consdev_ops {
cn_probe_t *cn_probe;
/* probe hardware and fill in consdev info */
cn_init_t *cn_init;
/* turn on as console */
cn_term_t *cn_term;
/* turn off as console */
cn_getc_t *cn_getc;
/* kernel getchar interface */
cn_putc_t *cn_putc;
/* kernel putchar interface */
cn_grab_t *cn_grab;
/* grab console for exclusive kernel use */
cn_ungrab_t *cn_ungrab;
/* ungrab console */
cn_init_t *cn_resume;
/* set up console after sleep, optional */
};
struct consdev {
const struct consdev_ops *cn_ops;
/* console device operations. */
short cn_pri; /* pecking order; the higher the better */
void *cn_arg; /* drivers method argument */
int cn_flags; /* capabilities of this console */
char cn_name[SPECNAMELEN + 1]; /* console (device) name */
};
/* values for cn_pri - reflect our policy for console selection */
#define CN_DEAD 0 /* device doesn't exist */
#define CN_LOW 1 /* device is a last restort only */
#define CN_NORMAL 2 /* device exists but is nothing special */
#define CN_INTERNAL 3 /* "internal" bit-mapped display */
#define CN_REMOTE 4 /* serial interface with remote bit set */
/* Values for cn_flags. */
#define CN_FLAG_NODEBUG 0x00000001 /* Not supported with debugger. */
#define CN_FLAG_NOAVAIL 0x00000002 /* Temporarily not available. */
/* Visibility of characters in cngets() */
#define GETS_NOECHO 0 /* Disable echoing of characters. */
#define GETS_ECHO 1 /* Enable echoing of characters. */
#define GETS_ECHOPASS 2 /* Print a * for every character. */
#ifdef _KERNEL
extern struct msgbuf consmsgbuf; /* Message buffer for constty. */
extern struct tty *constty; /* Temporary virtual console. */
#define CONSOLE_DEVICE(name, ops, arg) \
static struct consdev name = { \
.cn_ops = &ops, \
.cn_arg = (arg), \
}; \
DATA_SET(cons_set, name)
#define CONSOLE_DRIVER(name, ...) \
static const struct consdev_ops name##_consdev_ops = { \
/* Mandatory methods. */ \
.cn_probe = name##_cnprobe, \
.cn_init = name##_cninit, \
.cn_term = name##_cnterm, \
.cn_getc = name##_cngetc, \
.cn_putc = name##_cnputc, \
.cn_grab = name##_cngrab, \
.cn_ungrab = name##_cnungrab, \
/* Optional fields. */ \
__VA_ARGS__ \
}; \
CONSOLE_DEVICE(name##_consdev, name##_consdev_ops, NULL)
/* Other kernel entry points. */
void cninit(void);
void cninit_finish(void);
int cnadd(struct consdev *);
void cnavailable(struct consdev *, int);
void cnremove(struct consdev *);
void cnselect(struct consdev *);
void cngrab(void);
void cnungrab(void);
void cnresume(void);
int cncheckc(void);
int cngetc(void);
void cngets(char *, size_t, int);
void cnputc(int);
void cnputs(const char *);
void cnputsn(const char *, size_t);
int cnunavailable(void);
void constty_set(struct tty *tp);
void constty_clear(void);
/* sc(4) / vt(4) coexistence shim */
#define VTY_SC 0x01
#define VTY_VT 0x02
int vty_enabled(unsigned int);
void vty_set_preferred(unsigned int);
#endif /* _KERNEL */
#endif /* !_MACHINE_CONS_H_ */
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