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Annotation of sys/arch/hp300/stand/common/cons.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: cons.c,v 1.4 2006/08/17 06:31:10 miod Exp $   */
                      2: /*     $NetBSD: cons.c,v 1.2 1997/05/12 07:44:53 thorpej Exp $ */
                      3:
                      4: /*
                      5:  * Copyright (c) 1988 University of Utah.
                      6:  * Copyright (c) 1990, 1993
                      7:  *     The Regents of the University of California.  All rights reserved.
                      8:  *
                      9:  * This code is derived from software contributed to Berkeley by
                     10:  * the Systems Programming Group of the University of Utah Computer
                     11:  * Science Department.
                     12:  *
                     13:  * Redistribution and use in source and binary forms, with or without
                     14:  * modification, are permitted provided that the following conditions
                     15:  * are met:
                     16:  * 1. Redistributions of source code must retain the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer.
                     18:  * 2. Redistributions in binary form must reproduce the above copyright
                     19:  *    notice, this list of conditions and the following disclaimer in the
                     20:  *    documentation and/or other materials provided with the distribution.
                     21:  * 3. Neither the name of the University nor the names of its contributors
                     22:  *    may be used to endorse or promote products derived from this software
                     23:  *    without specific prior written permission.
                     24:  *
                     25:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     26:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     27:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     28:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     29:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     30:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     31:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     32:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     33:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     34:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     35:  * SUCH DAMAGE.
                     36:  *
                     37:  * from: Utah Hdr: cons.c 1.7 92/02/28
                     38:  *
                     39:  *     @(#)cons.c      8.1 (Berkeley) 6/10/93
                     40:  */
                     41:
                     42: #include <sys/param.h>
                     43:
                     44: #include "samachdep.h"
                     45: #include "consdefs.h"
                     46:
                     47: struct consdev constab[] = {
                     48: #ifdef ITECONSOLE
                     49:        { iteprobe,     iteinit,        itegetchar,     iteputchar },
                     50: #endif
                     51: #ifdef DCACONSOLE
                     52:        { dcaprobe,     dcainit,        dcagetchar,     dcaputchar },
                     53: #endif
                     54: #ifdef APCICONSOLE
                     55:        { apciprobe,    apciinit,       apcigetchar,    apciputchar },
                     56: #endif
                     57: #ifdef DCMCONSOLE
                     58:        { dcmprobe,     dcminit,        dcmgetchar,     dcmputchar },
                     59: #endif
                     60:        { 0 },
                     61: };
                     62:
                     63: struct consdev *cn_tab;
                     64: int noconsole;
                     65:
                     66: void
                     67: cninit()
                     68: {
                     69:        struct consdev *cp;
                     70:
                     71:        cn_tab = NULL;
                     72:        noconsole = 1;
                     73:        for (cp = constab; cp->cn_probe; cp++) {
                     74:                (*cp->cn_probe)(cp);
                     75:                if (cp->cn_pri > CN_DEAD &&
                     76:                    (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri))
                     77:                        cn_tab = cp;
                     78:        }
                     79:        if (cn_tab) {
                     80:                (*cn_tab->cn_init)(cn_tab);
                     81:                noconsole = 0;
                     82:        }
                     83: }
                     84:
                     85: int
                     86: cngetc()
                     87: {
                     88:
                     89:        /* Note: the dev_t arguments are not used! */
                     90:        if (cn_tab)
                     91:                return((*cn_tab->cn_getc)(0));
                     92:        return(0);
                     93: }
                     94:
                     95: void
                     96: cnputc(c)
                     97:        int c;
                     98: {
                     99:        /* Note: the dev_t arguments are not used! */
                    100:        if (userom)
                    101:                romputchar(c);
                    102:        else if (cn_tab)
                    103:                (*cn_tab->cn_putc)(0, c);
                    104: }