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
iteattach(int n)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
iteopen(dev_t dev,int mode,int devtype,struct lwp * l)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
iteclose(dev_t dev,int flag,int mode,struct lwp * l)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
iteread(dev_t dev,struct uio * uio,int flag)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
itewrite(dev_t dev,struct uio * uio,int flag)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 *
itetty(dev_t dev)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
iteioctl(dev_t dev,u_long cmd,void * addr,int flag,struct lwp * l)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
itepoll(dev_t dev,int events,struct lwp * l)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
itekqfilter(dev_t dev,struct knote * kn)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