Page MenuHomeFreeBSD
Files F144457020

cons.h
No OneTemporary
Actions

Size
4 KB
Referenced Files
None
Subscribers
None

cons.h
View Options

/*-
* 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.
* 4. 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;
typedef void cn_probe_t(struct consdev *);
typedef void cn_init_t(struct consdev *);
typedef void cn_term_t(struct consdev *);
typedef int cn_getc_t(struct consdev *);
typedef int cn_checkc_t(struct consdev *);
typedef void cn_putc_t(struct consdev *, int);
typedef void cn_dbctl_t(struct consdev *, int);
struct consdev {
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_checkc_t *cn_checkc;
/* kernel "return char if available" interface */
cn_putc_t *cn_putc;
/* kernel putchar interface */
cn_dbctl_t *cn_dbctl;
/* debugger control interface */
struct tty *cn_tp; /* tty structure for console device */
short cn_pri; /* pecking order; the higher the better */
void *cn_arg; /* drivers method argument */
int cn_unit; /* some drivers prefer this */
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. */
#ifdef _KERNEL
#define CONS_DRIVER(name, probe, init, term, getc, checkc, putc, dbctl) \
static struct consdev name##_consdev = { \
probe, init, term, getc, checkc, putc, dbctl \
}; \
DATA_SET(cons_set, name##_consdev)
/* 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 *);
int cncheckc(void);
int cngetc(void);
void cndbctl(int);
void cnputc(int);
int cnunavailable(void);
#endif /* _KERNEL */
#endif /* !_MACHINE_CONS_H_ */

File Metadata

Mime Type
text/x-c
Expires
Sun, Mar 29, 1:59 PM (1 d, 22 h)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
28217190
Default Alt Text
cons.h (4 KB)

Event Timeline