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263444cfbf
dev_t to the method functions. The dev_t can still be found at struct consdev *->cn_dev. Add a void *cn_arg element to struct consdev which the drivers can use for retrieving their softc.
104 lines
3.9 KiB
C
104 lines
3.9 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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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 int cn_getc_t(struct consdev *);
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typedef int cn_checkc_t(struct consdev *);
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typedef void cn_putc_t(struct consdev *, int);
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typedef void cn_dbctl_t(struct consdev *, int);
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struct consdev {
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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_checkc_t *cn_checkc;
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/* kernel "return char if available" interface */
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cn_putc_t *cn_putc;
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/* kernel putchar interface */
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cn_dbctl_t *cn_dbctl;
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/* debugger control interface */
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struct tty *cn_tp; /* tty structure for console device */
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dev_t cn_dev; /* major/minor of device */
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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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};
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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_NORMAL 1 /* device exists but is nothing special */
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#define CN_INTERNAL 2 /* "internal" bit-mapped display */
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#define CN_REMOTE 3 /* serial interface with remote bit set */
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#ifdef _KERNEL
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extern int cons_unavail;
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#define CONS_DRIVER(name, probe, init, term, getc, checkc, putc, dbctl) \
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static struct consdev name##_consdev = { \
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probe, init, term, getc, checkc, putc, dbctl \
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}; \
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DATA_SET(cons_set, name##_consdev)
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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 cnremove(struct consdev *);
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void cnselect(struct consdev *);
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int cncheckc(void);
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int cngetc(void);
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void cndbctl(int);
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void cnputc(int);
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#endif /* _KERNEL */
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#endif /* !_MACHINE_CONS_H_ */
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