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ite_compat.c revision 1.10.88.1 
      1 /*	$NetBSD: ite_compat.c,v 1.10.88.1 2014/08/20 00:03:11 tls 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 1.10.88.1 2014/08/20 00:03:11 tls 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 	.d_open = iteopen,
     67 	.d_close = iteclose,
     68 	.d_read = iteread,
     69 	.d_write = itewrite,
     70 	.d_ioctl = iteioctl,
     71 	.d_stop = nostop,
     72 	.d_tty = itetty,
     73 	.d_poll = itepoll,
     74 	.d_mmap = nommap,
     75 	.d_kqfilter = itekqfilter,
     76 	.d_discard = nodiscard,
     77 	.d_flag = D_TTY
     78 };
     79 
     80 #if NWSDISPLAY > 0
     81 extern const struct cdevsw wsdisplay_cdevsw;
     82 #endif
     83 
     84 void		iteattach(int);
     85 
     86 static int	ite_initted = 0;
     87 static int	ite_bell_freq = 1880;
     88 static int	ite_bell_length = 10;
     89 static int	ite_bell_volume = 100;
     90 
     91 
     92 /*ARGSUSED*/
     93 void
     94 iteattach(int n)
     95 {
     96 #if NWSDISPLAY > 0
     97 	int maj;
     98 
     99 	maj = cdevsw_lookup_major(&wsdisplay_cdevsw);
    100 	KASSERT(maj != -1);
    101 
    102 	if (maj != major(cn_tab->cn_dev))
    103 		return;
    104 
    105 	ite_initted = 1;
    106 #endif
    107 }
    108 
    109 /*
    110  * Tty handling functions
    111  */
    112 
    113 /*ARGSUSED*/
    114 int
    115 iteopen(dev_t dev, int mode, int devtype, struct lwp *l)
    116 {
    117 	return ite_initted ? (0) : (ENXIO);
    118 }
    119 
    120 /*ARGSUSED*/
    121 int
    122 iteclose(dev_t dev, int flag, int mode, struct lwp *l)
    123 {
    124 	return ite_initted ? (0) : (ENXIO);
    125 }
    126 
    127 /*ARGSUSED*/
    128 int
    129 iteread(dev_t dev, struct uio *uio, int flag)
    130 {
    131 	return ite_initted ?
    132 	    (*wsdisplay_cdevsw.d_read)(cn_tab->cn_dev, uio, flag) : (ENXIO);
    133 }
    134 
    135 /*ARGSUSED*/
    136 int
    137 itewrite(dev_t dev, struct uio *uio, int flag)
    138 {
    139 	return ite_initted ?
    140 	    (*wsdisplay_cdevsw.d_write)(cn_tab->cn_dev, uio, flag) : (ENXIO);
    141 }
    142 
    143 /*ARGSUSED*/
    144 struct tty *
    145 itetty(dev_t dev)
    146 {
    147 	return ite_initted ? (*wsdisplay_cdevsw.d_tty)(cn_tab->cn_dev) : (NULL);
    148 }
    149 
    150 /*ARGSUSED*/
    151 int
    152 iteioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
    153 {
    154 	if (!ite_initted)
    155 		return (ENXIO);
    156 
    157 	switch (cmd) {
    158 	case ITEIOC_RINGBELL:
    159 		return mac68k_ring_bell(ite_bell_freq,
    160 		    ite_bell_length, ite_bell_volume);
    161 	case ITEIOC_SETBELL:
    162 		{
    163 			struct bellparams *bp = (void *)addr;
    164 
    165 			/* Do some sanity checks. */
    166 			if (bp->freq < 10 || bp->freq > 40000)
    167 				return (EINVAL);
    168 			if (bp->len < 0 || bp->len > 3600)
    169 				return (EINVAL);
    170 			if (bp->vol < 0 || bp->vol > 100)
    171 				return (EINVAL);
    172 
    173 			ite_bell_freq = bp->freq;
    174 			ite_bell_length = bp->len;
    175 			ite_bell_volume = bp->vol;
    176 			return (0);
    177 		}
    178 	case ITEIOC_GETBELL:
    179 		{
    180 			struct bellparams *bp = (void *)addr;
    181 
    182 			ite_bell_freq = bp->freq;
    183 			ite_bell_length = bp->len;
    184 			ite_bell_volume = bp->vol;
    185 			return (0);
    186 		}
    187 	default:
    188 		return ((*wsdisplay_cdevsw.d_ioctl)(cn_tab->cn_dev, cmd,
    189 						    addr, flag, l));
    190 	}
    191 
    192 	return (ENOTTY);
    193 }
    194 
    195 /*ARGSUSED*/
    196 int
    197 itepoll(dev_t dev, int events, struct lwp *l)
    198 {
    199 	return ite_initted ?
    200 	    (*wsdisplay_cdevsw.d_poll)(cn_tab->cn_dev, events, l) : (ENXIO);
    201 }
    202 
    203 int
    204 itekqfilter(dev_t dev, struct knote *kn)
    205 {
    206 	return ite_initted ?
    207 	    (*wsdisplay_cdevsw.d_kqfilter)(cn_tab->cn_dev, kn) : (ENXIO);
    208 }
    209