145 lines
5.0 KiB
C
145 lines
5.0 KiB
C
/*-
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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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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* 4. Neither the name of the University 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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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS 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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* from: @(#)cons.h 7.2 (Berkeley) 5/9/91
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* $FreeBSD$
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*/
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#ifndef _MACHINE_CONS_H_
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#define _MACHINE_CONS_H_
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struct consdev;
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struct tty;
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typedef void cn_probe_t(struct consdev *);
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typedef void cn_init_t(struct consdev *);
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typedef void cn_term_t(struct consdev *);
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typedef void cn_grab_t(struct consdev *);
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typedef void cn_ungrab_t(struct consdev *);
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typedef int cn_getc_t(struct consdev *);
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typedef void cn_putc_t(struct consdev *, int);
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struct consdev_ops {
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cn_probe_t *cn_probe;
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/* probe hardware and fill in consdev info */
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cn_init_t *cn_init;
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/* turn on as console */
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cn_term_t *cn_term;
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/* turn off as console */
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cn_getc_t *cn_getc;
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/* kernel getchar interface */
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cn_putc_t *cn_putc;
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/* kernel putchar interface */
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cn_grab_t *cn_grab;
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/* grab console for exclusive kernel use */
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cn_ungrab_t *cn_ungrab;
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/* ungrab console */
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};
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struct consdev {
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const struct consdev_ops *cn_ops;
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/* console device operations. */
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short cn_pri; /* pecking order; the higher the better */
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void *cn_arg; /* drivers method argument */
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int cn_flags; /* capabilities of this console */
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char cn_name[SPECNAMELEN + 1]; /* console (device) name */
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};
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/* values for cn_pri - reflect our policy for console selection */
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#define CN_DEAD 0 /* device doesn't exist */
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#define CN_LOW 1 /* device is a last restort only */
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#define CN_NORMAL 2 /* device exists but is nothing special */
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#define CN_INTERNAL 3 /* "internal" bit-mapped display */
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#define CN_REMOTE 4 /* serial interface with remote bit set */
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/* Values for cn_flags. */
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#define CN_FLAG_NODEBUG 0x00000001 /* Not supported with debugger. */
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#define CN_FLAG_NOAVAIL 0x00000002 /* Temporarily not available. */
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/* Visibility of characters in cngets() */
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#define GETS_NOECHO 0 /* Disable echoing of characters. */
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#define GETS_ECHO 1 /* Enable echoing of characters. */
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#define GETS_ECHOPASS 2 /* Print a * for every character. */
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#ifdef _KERNEL
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extern struct msgbuf consmsgbuf; /* Message buffer for constty. */
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extern struct tty *constty; /* Temporary virtual console. */
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#define CONSOLE_DEVICE(name, ops, arg) \
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static struct consdev name = { \
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.cn_ops = &ops, \
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.cn_arg = (arg), \
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}; \
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DATA_SET(cons_set, name)
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#define CONSOLE_DRIVER(name) \
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static const struct consdev_ops name##_consdev_ops = { \
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.cn_probe = name##_cnprobe, \
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.cn_init = name##_cninit, \
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.cn_term = name##_cnterm, \
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.cn_getc = name##_cngetc, \
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.cn_putc = name##_cnputc, \
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.cn_grab = name##_cngrab, \
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.cn_ungrab = name##_cnungrab, \
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}; \
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CONSOLE_DEVICE(name##_consdev, name##_consdev_ops, NULL)
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/* Other kernel entry points. */
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void cninit(void);
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void cninit_finish(void);
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int cnadd(struct consdev *);
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void cnavailable(struct consdev *, int);
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void cnremove(struct consdev *);
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void cnselect(struct consdev *);
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void cngrab(void);
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void cnungrab(void);
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int cncheckc(void);
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int cngetc(void);
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void cngets(char *, size_t, int);
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void cnputc(int);
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void cnputs(char *);
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int cnunavailable(void);
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void constty_set(struct tty *tp);
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void constty_clear(void);
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/* sc(4) / vt(4) coexistence shim */
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#define VTY_SC 0x01
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#define VTY_VT 0x02
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int vty_enabled(unsigned int);
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void vty_set_preferred(unsigned int);
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#endif /* _KERNEL */
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#endif /* !_MACHINE_CONS_H_ */
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