1 /* $NetBSD: ite_compat.c,v 1.14 2023/03/26 15:12:34 andvar 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 * wsdisplay 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 1.14 2023/03/26 15:12:34 andvar 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 #include "ioconf.h" 57 58 dev_type_open(iteopen); 59 dev_type_close(iteclose); 60 dev_type_read(iteread); 61 dev_type_write(itewrite); 62 dev_type_ioctl(iteioctl); 63 dev_type_tty(itetty); 64 dev_type_poll(itepoll); 65 dev_type_kqfilter(itekqfilter); 66 67 const struct cdevsw ite_cdevsw = { 68 .d_open = iteopen, 69 .d_close = iteclose, 70 .d_read = iteread, 71 .d_write = itewrite, 72 .d_ioctl = iteioctl, 73 .d_stop = nostop, 74 .d_tty = itetty, 75 .d_poll = itepoll, 76 .d_mmap = nommap, 77 .d_kqfilter = itekqfilter, 78 .d_discard = nodiscard, 79 .d_flag = D_TTY 80 }; 81 82 #if NWSDISPLAY > 0 83 extern const struct cdevsw wsdisplay_cdevsw; 84 #endif 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