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ite_compat.c revision 1.4.16.1 
      1 /*	$NetBSD: ite_compat.c,v 1.4.16.1 2002/05/19 07:41:30 gehenna Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 2000 Scott Reynolds
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 /*
     31  * The main thing to realize about this emulator is that the old console
     32  * emulator was largely compatible with the DEC VT-220.  Since the
     33  * wsdiplay driver has a more complete emulation of that terminal, it's
     34  * reasonable to pass virtually everything up to that driver without
     35  * modification.
     36  */
     37 
     38 #include "ite.h"
     39 #include "wsdisplay.h"
     40 
     41 #include <sys/param.h>
     42 #include <sys/systm.h>
     43 #include <sys/conf.h>
     44 #include <sys/device.h>
     45 #include <sys/ioctl.h>
     46 #include <sys/ttycom.h>
     47 
     48 #include <dev/cons.h>
     49 
     50 #include <machine/cpu.h>
     51 #include <machine/iteioctl.h>
     52 
     53 dev_type_open(iteopen);
     54 dev_type_close(iteclose);
     55 dev_type_read(iteread);
     56 dev_type_write(itewrite);
     57 dev_type_ioctl(iteioctl);
     58 dev_type_tty(itetty);
     59 dev_type_poll(itepoll);
     60 
     61 const struct cdevsw ite_cdevsw = {
     62 	iteopen, iteclose, iteread, itewrite, iteioctl,
     63 	nostop, itetty, itepoll, nommap, D_TTY
     64 };
     65 
     66 #if NWSDISPLAY > 0
     67 extern const struct cdevsw wsdisplay_cdevsw;
     68 #endif
     69 
     70 void		iteattach __P((int));
     71 
     72 static int	ite_initted = 0;
     73 static int	ite_bell_freq = 1880;
     74 static int	ite_bell_length = 10;
     75 static int	ite_bell_volume = 100;
     76 
     77 
     78 /*ARGSUSED*/
     79 void
     80 iteattach(n)
     81 	int n;
     82 {
     83 #if NWSDISPLAY > 0
     84 	int maj;
     85 
     86 	maj = cdevsw_lookup_major(&wsdisplay_cdevsw);
     87 	KASSERT(maj != -1);
     88 
     89 	if (maj != major(cn_tab->cn_dev))
     90 		return;
     91 
     92 	ite_initted = 1;
     93 #endif
     94 }
     95 
     96 /*
     97  * Tty handling functions
     98  */
     99 
    100 /*ARGSUSED*/
    101 int
    102 iteopen(dev, mode, devtype, p)
    103 	dev_t dev;
    104 	int mode;
    105 	int devtype;
    106 	struct proc *p;
    107 {
    108 	return ite_initted ? (0) : (ENXIO);
    109 }
    110 
    111 /*ARGSUSED*/
    112 int
    113 iteclose(dev, flag, mode, p)
    114 	dev_t dev;
    115 	int flag;
    116 	int mode;
    117 	struct proc *p;
    118 {
    119 	return ite_initted ? (0) : (ENXIO);
    120 }
    121 
    122 /*ARGSUSED*/
    123 int
    124 iteread(dev, uio, flag)
    125 	dev_t dev;
    126 	struct uio *uio;
    127 	int flag;
    128 {
    129 	return ite_initted ?
    130 	    (*wsdisplay_cdevsw.d_read)(cn_tab->cn_dev, uio, flag) : (ENXIO);
    131 }
    132 
    133 /*ARGSUSED*/
    134 int
    135 itewrite(dev, uio, flag)
    136 	dev_t dev;
    137 	struct uio *uio;
    138 	int flag;
    139 {
    140 	return ite_initted ?
    141 	    (*wsdisplay_cdevsw.d_write)(cn_tab->cn_dev, uio, flag) : (ENXIO);
    142 }
    143 
    144 /*ARGSUSED*/
    145 struct tty *
    146 itetty(dev)
    147 	dev_t dev;
    148 {
    149 	return ite_initted ? (*wsdisplay_cdevsw.d_tty)(cn_tab->cn_dev) : (NULL);
    150 }
    151 
    152 /*ARGSUSED*/
    153 int
    154 iteioctl(dev, cmd, addr, flag, p)
    155 	dev_t dev;
    156 	u_long cmd;
    157 	caddr_t addr;
    158 	int flag;
    159 	struct proc *p;
    160 {
    161 	if (!ite_initted)
    162 		return (ENXIO);
    163 
    164 	switch (cmd) {
    165 	case ITEIOC_RINGBELL:
    166 		return mac68k_ring_bell(ite_bell_freq,
    167 		    ite_bell_length, ite_bell_volume);
    168 	case ITEIOC_SETBELL:
    169 		{
    170 			struct bellparams *bp = (void *)addr;
    171 
    172 			/* Do some sanity checks. */
    173 			if (bp->freq < 10 || bp->freq > 40000)
    174 				return (EINVAL);
    175 			if (bp->len < 0 || bp->len > 3600)
    176 				return (EINVAL);
    177 			if (bp->vol < 0 || bp->vol > 100)
    178 				return (EINVAL);
    179 
    180 			ite_bell_freq = bp->freq;
    181 			ite_bell_length = bp->len;
    182 			ite_bell_volume = bp->vol;
    183 			return (0);
    184 		}
    185 	case ITEIOC_GETBELL:
    186 		{
    187 			struct bellparams *bp = (void *)addr;
    188 
    189 			ite_bell_freq = bp->freq;
    190 			ite_bell_length = bp->len;
    191 			ite_bell_volume = bp->vol;
    192 			return (0);
    193 		}
    194 	default:
    195 		return ((*wsdisplay_cdevsw.d_ioctl)(cn_tab->cn_dev, cmd,
    196 						    addr, flag, p));
    197 	}
    198 
    199 	return (ENOTTY);
    200 }
    201 
    202 /*ARGSUSED*/
    203 int
    204 itepoll(dev, events, p)
    205 	dev_t dev;
    206 	int events;
    207 	struct proc *p;
    208 {
    209 	return ite_initted ?
    210 	    (*wsdisplay_cdevsw.d_poll)(cn_tab->cn_dev, events, p) : (ENXIO);
    211 }
    212