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ite_compat.c revision 1.8.10.1 
      1 /*	$NetBSD: ite_compat.c,v 1.8.10.1 2006/06/21 14:53:02 yamt 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 <sys/cdefs.h>
     39 __KERNEL_RCSID(0, "$NetBSD: ite_compat.c,v 1.8.10.1 2006/06/21 14:53:02 yamt Exp $");
     40 
     41 #include "ite.h"
     42 #include "wsdisplay.h"
     43 
     44 #include <sys/param.h>
     45 #include <sys/systm.h>
     46 #include <sys/conf.h>
     47 #include <sys/device.h>
     48 #include <sys/ioctl.h>
     49 #include <sys/ttycom.h>
     50 
     51 #include <dev/cons.h>
     52 
     53 #include <machine/cpu.h>
     54 #include <machine/iteioctl.h>
     55 
     56 dev_type_open(iteopen);
     57 dev_type_close(iteclose);
     58 dev_type_read(iteread);
     59 dev_type_write(itewrite);
     60 dev_type_ioctl(iteioctl);
     61 dev_type_tty(itetty);
     62 dev_type_poll(itepoll);
     63 dev_type_kqfilter(itekqfilter);
     64 
     65 const struct cdevsw ite_cdevsw = {
     66 	iteopen, iteclose, iteread, itewrite, iteioctl,
     67 	nostop, itetty, itepoll, nommap, itekqfilter, D_TTY
     68 };
     69 
     70 #if NWSDISPLAY > 0
     71 extern const struct cdevsw wsdisplay_cdevsw;
     72 #endif
     73 
     74 void		iteattach(int);
     75 
     76 static int	ite_initted = 0;
     77 static int	ite_bell_freq = 1880;
     78 static int	ite_bell_length = 10;
     79 static int	ite_bell_volume = 100;
     80 
     81 
     82 /*ARGSUSED*/
     83 void
     84 iteattach(int n)
     85 {
     86 #if NWSDISPLAY > 0
     87 	int maj;
     88 
     89 	maj = cdevsw_lookup_major(&wsdisplay_cdevsw);
     90 	KASSERT(maj != -1);
     91 
     92 	if (maj != major(cn_tab->cn_dev))
     93 		return;
     94 
     95 	ite_initted = 1;
     96 #endif
     97 }
     98 
     99 /*
    100  * Tty handling functions
    101  */
    102 
    103 /*ARGSUSED*/
    104 int
    105 iteopen(dev_t dev, int mode, int devtype, struct lwp *l)
    106 {
    107 	return ite_initted ? (0) : (ENXIO);
    108 }
    109 
    110 /*ARGSUSED*/
    111 int
    112 iteclose(dev_t dev, int flag, int mode, struct lwp *l)
    113 {
    114 	return ite_initted ? (0) : (ENXIO);
    115 }
    116 
    117 /*ARGSUSED*/
    118 int
    119 iteread(dev_t dev, struct uio *uio, int flag)
    120 {
    121 	return ite_initted ?
    122 	    (*wsdisplay_cdevsw.d_read)(cn_tab->cn_dev, uio, flag) : (ENXIO);
    123 }
    124 
    125 /*ARGSUSED*/
    126 int
    127 itewrite(dev_t dev, struct uio *uio, int flag)
    128 {
    129 	return ite_initted ?
    130 	    (*wsdisplay_cdevsw.d_write)(cn_tab->cn_dev, uio, flag) : (ENXIO);
    131 }
    132 
    133 /*ARGSUSED*/
    134 struct tty *
    135 itetty(dev_t dev)
    136 {
    137 	return ite_initted ? (*wsdisplay_cdevsw.d_tty)(cn_tab->cn_dev) : (NULL);
    138 }
    139 
    140 /*ARGSUSED*/
    141 int
    142 iteioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct lwp *l)
    143 {
    144 	if (!ite_initted)
    145 		return (ENXIO);
    146 
    147 	switch (cmd) {
    148 	case ITEIOC_RINGBELL:
    149 		return mac68k_ring_bell(ite_bell_freq,
    150 		    ite_bell_length, ite_bell_volume);
    151 	case ITEIOC_SETBELL:
    152 		{
    153 			struct bellparams *bp = (void *)addr;
    154 
    155 			/* Do some sanity checks. */
    156 			if (bp->freq < 10 || bp->freq > 40000)
    157 				return (EINVAL);
    158 			if (bp->len < 0 || bp->len > 3600)
    159 				return (EINVAL);
    160 			if (bp->vol < 0 || bp->vol > 100)
    161 				return (EINVAL);
    162 
    163 			ite_bell_freq = bp->freq;
    164 			ite_bell_length = bp->len;
    165 			ite_bell_volume = bp->vol;
    166 			return (0);
    167 		}
    168 	case ITEIOC_GETBELL:
    169 		{
    170 			struct bellparams *bp = (void *)addr;
    171 
    172 			ite_bell_freq = bp->freq;
    173 			ite_bell_length = bp->len;
    174 			ite_bell_volume = bp->vol;
    175 			return (0);
    176 		}
    177 	default:
    178 		return ((*wsdisplay_cdevsw.d_ioctl)(cn_tab->cn_dev, cmd,
    179 						    addr, flag, l));
    180 	}
    181 
    182 	return (ENOTTY);
    183 }
    184 
    185 /*ARGSUSED*/
    186 int
    187 itepoll(dev_t dev, int events, struct lwp *l)
    188 {
    189 	return ite_initted ?
    190 	    (*wsdisplay_cdevsw.d_poll)(cn_tab->cn_dev, events, l) : (ENXIO);
    191 }
    192 
    193 int
    194 itekqfilter(dev_t dev, struct knote *kn)
    195 {
    196 	return ite_initted ?
    197 	    (*wsdisplay_cdevsw.d_kqfilter)(cn_tab->cn_dev, kn) : (ENXIO);
    198 }
    199