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ite_compat.c revision 1.10.78.1 
      1 /*	$NetBSD: ite_compat.c,v 1.10.78.1 2014/05/22 11:39:56 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 1.10.78.1 2014/05/22 11:39:56 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 	.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_flag = D_TTY
     77 };
     78 
     79 #if NWSDISPLAY > 0
     80 extern const struct cdevsw wsdisplay_cdevsw;
     81 #endif
     82 
     83 void		iteattach(int);
     84 
     85 static int	ite_initted = 0;
     86 static int	ite_bell_freq = 1880;
     87 static int	ite_bell_length = 10;
     88 static int	ite_bell_volume = 100;
     89 
     90 
     91 /*ARGSUSED*/
     92 void
     93 iteattach(int n)
     94 {
     95 #if NWSDISPLAY > 0
     96 	int maj;
     97 
     98 	maj = cdevsw_lookup_major(&wsdisplay_cdevsw);
     99 	KASSERT(maj != -1);
    100 
    101 	if (maj != major(cn_tab->cn_dev))
    102 		return;
    103 
    104 	ite_initted = 1;
    105 #endif
    106 }
    107 
    108 /*
    109  * Tty handling functions
    110  */
    111 
    112 /*ARGSUSED*/
    113 int
    114 iteopen(dev_t dev, int mode, int devtype, struct lwp *l)
    115 {
    116 	return ite_initted ? (0) : (ENXIO);
    117 }
    118 
    119 /*ARGSUSED*/
    120 int
    121 iteclose(dev_t dev, int flag, int mode, struct lwp *l)
    122 {
    123 	return ite_initted ? (0) : (ENXIO);
    124 }
    125 
    126 /*ARGSUSED*/
    127 int
    128 iteread(dev_t dev, struct uio *uio, int flag)
    129 {
    130 	return ite_initted ?
    131 	    (*wsdisplay_cdevsw.d_read)(cn_tab->cn_dev, uio, flag) : (ENXIO);
    132 }
    133 
    134 /*ARGSUSED*/
    135 int
    136 itewrite(dev_t dev, struct uio *uio, int flag)
    137 {
    138 	return ite_initted ?
    139 	    (*wsdisplay_cdevsw.d_write)(cn_tab->cn_dev, uio, flag) : (ENXIO);
    140 }
    141 
    142 /*ARGSUSED*/
    143 struct tty *
    144 itetty(dev_t dev)
    145 {
    146 	return ite_initted ? (*wsdisplay_cdevsw.d_tty)(cn_tab->cn_dev) : (NULL);
    147 }
    148 
    149 /*ARGSUSED*/
    150 int
    151 iteioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
    152 {
    153 	if (!ite_initted)
    154 		return (ENXIO);
    155 
    156 	switch (cmd) {
    157 	case ITEIOC_RINGBELL:
    158 		return mac68k_ring_bell(ite_bell_freq,
    159 		    ite_bell_length, ite_bell_volume);
    160 	case ITEIOC_SETBELL:
    161 		{
    162 			struct bellparams *bp = (void *)addr;
    163 
    164 			/* Do some sanity checks. */
    165 			if (bp->freq < 10 || bp->freq > 40000)
    166 				return (EINVAL);
    167 			if (bp->len < 0 || bp->len > 3600)
    168 				return (EINVAL);
    169 			if (bp->vol < 0 || bp->vol > 100)
    170 				return (EINVAL);
    171 
    172 			ite_bell_freq = bp->freq;
    173 			ite_bell_length = bp->len;
    174 			ite_bell_volume = bp->vol;
    175 			return (0);
    176 		}
    177 	case ITEIOC_GETBELL:
    178 		{
    179 			struct bellparams *bp = (void *)addr;
    180 
    181 			ite_bell_freq = bp->freq;
    182 			ite_bell_length = bp->len;
    183 			ite_bell_volume = bp->vol;
    184 			return (0);
    185 		}
    186 	default:
    187 		return ((*wsdisplay_cdevsw.d_ioctl)(cn_tab->cn_dev, cmd,
    188 						    addr, flag, l));
    189 	}
    190 
    191 	return (ENOTTY);
    192 }
    193 
    194 /*ARGSUSED*/
    195 int
    196 itepoll(dev_t dev, int events, struct lwp *l)
    197 {
    198 	return ite_initted ?
    199 	    (*wsdisplay_cdevsw.d_poll)(cn_tab->cn_dev, events, l) : (ENXIO);
    200 }
    201 
    202 int
    203 itekqfilter(dev_t dev, struct knote *kn)
    204 {
    205 	return ite_initted ?
    206 	    (*wsdisplay_cdevsw.d_kqfilter)(cn_tab->cn_dev, kn) : (ENXIO);
    207 }
    208