1 /* $NetBSD: biconsdev.c,v 1.10 2003/08/07 16:30:57 agc Exp $ */
2
3 /*-
4 * Copyright (c) 1999-2001
5 * Shin Takemura and PocketBSD Project. 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. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the PocketBSD project
18 * and its contributors.
19 * 4. Neither the name of the project nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 */
36 /*
37 * Copyright (c) 1995
38 * The Regents of the University of California. All rights reserved.
39 *
40 * This code is derived from software contributed to Berkeley by
41 * Ted Lemon.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. Neither the name of the University nor the names of its contributors
52 * may be used to endorse or promote products derived from this software
53 * without specific prior written permission.
54 *
55 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
56 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
57 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
58 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
59 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
60 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
61 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
62 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
63 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
64 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 * SUCH DAMAGE.
66 *
67 */
68
69 #include <sys/cdefs.h>
70 __KERNEL_RCSID(0, "$NetBSD: biconsdev.c,v 1.10 2003/08/07 16:30:57 agc Exp $");
71
72 #include "biconsdev.h"
73 #include <sys/param.h>
74 #include <sys/proc.h>
75 #include <sys/systm.h>
76 #include <sys/buf.h>
77 #include <sys/ioctl.h>
78 #include <sys/tty.h>
79 #include <sys/conf.h>
80
81 #include <dev/cons.h>
82 #include <dev/hpc/bicons.h>
83 #include <dev/hpc/biconsvar.h>
84
85 struct tty biconsdev_tty[NBICONSDEV];
86 void biconsdevattach(int);
87 static void biconsdev_output(struct tty *);
88
89 dev_type_open(biconsdevopen);
90 dev_type_close(biconsdevclose);
91 dev_type_read(biconsdevread);
92 dev_type_write(biconsdevwrite);
93 dev_type_ioctl(biconsdevioctl);
94 dev_type_tty(biconsdevtty);
95 dev_type_poll(biconsdevpoll);
96
97 const struct cdevsw biconsdev_cdevsw = {
98 biconsdevopen, biconsdevclose, biconsdevread, biconsdevwrite,
99 biconsdevioctl, nostop, biconsdevtty, biconsdevpoll, nommap,
100 ttykqfilter, D_TTY
101 };
102
103 void
104 biconsdevattach(int n)
105 {
106 struct tty *tp = &biconsdev_tty[0];
107 int maj;
108
109 /* locate the major number */
110 maj = cdevsw_lookup_major(&biconsdev_cdevsw);
111
112 /* Set up the tty queues now... */
113 clalloc(&tp->t_rawq, 1024, 1);
114 clalloc(&tp->t_canq, 1024, 1);
115 /* output queue doesn't need quoting */
116 clalloc(&tp->t_outq, 1024, 0);
117 /* Set default line discipline. */
118 tp->t_linesw = linesw[0];
119
120
121 tp->t_dev = makedev(maj, 0);
122 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
123 tp->t_param = (int (*)(struct tty *, struct termios *))nullop;
124 tp->t_winsize.ws_row = bicons_height;
125 tp->t_winsize.ws_col = bicons_width;
126 tp->t_winsize.ws_xpixel = bicons_xpixel;
127 tp->t_winsize.ws_ypixel = bicons_ypixel;
128 tp->t_oproc = biconsdev_output;
129 }
130
131
132 static void
133 biconsdev_output(struct tty *tp)
134 {
135 int s, n;
136 char buf[OBUFSIZ];
137
138 s = spltty();
139 if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) {
140 splx(s);
141 return;
142 }
143 tp->t_state |= TS_BUSY;
144 splx(s);
145 n = q_to_b(&tp->t_outq, buf, sizeof(buf));
146 bicons_putn(buf, n);
147
148 s = spltty();
149 tp->t_state &= ~TS_BUSY;
150 /* Come back if there's more to do */
151 if (tp->t_outq.c_cc) {
152 tp->t_state |= TS_TIMEOUT;
153 callout_reset(&tp->t_rstrt_ch, 1, ttrstrt, tp);
154 }
155 if (tp->t_outq.c_cc <= tp->t_lowat) {
156 if (tp->t_state&TS_ASLEEP) {
157 tp->t_state &= ~TS_ASLEEP;
158 wakeup((caddr_t)&tp->t_outq);
159 }
160 selwakeup(&tp->t_wsel);
161 }
162 splx(s);
163 }
164
165
166 int
167 biconsdevopen(dev_t dev, int flag, int mode, struct proc *p)
168 {
169 struct tty *tp = &biconsdev_tty[0];
170 int status;
171
172 if ((tp->t_state & TS_ISOPEN) == 0) {
173 /*
174 * Leave baud rate alone!
175 */
176 ttychars(tp);
177 tp->t_iflag = TTYDEF_IFLAG;
178 tp->t_oflag = TTYDEF_OFLAG;
179 tp->t_lflag = TTYDEF_LFLAG;
180 tp->t_cflag = TTYDEF_CFLAG;
181 tp->t_state = TS_ISOPEN | TS_CARR_ON;
182 (void)(*tp->t_param)(tp, &tp->t_termios);
183 ttsetwater(tp);
184 } else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0)
185 return (EBUSY);
186
187 status = (*tp->t_linesw->l_open)(dev, tp);
188 return status;
189 }
190
191
192 int
193 biconsdevclose(dev_t dev, int flag, int mode, struct proc *p)
194 {
195 struct tty *tp = &biconsdev_tty[0];
196
197 (*tp->t_linesw->l_close)(tp, flag);
198 ttyclose(tp);
199
200 return (0);
201 }
202
203
204 int
205 biconsdevread(dev_t dev, struct uio *uio, int flag)
206 {
207 struct tty *tp = &biconsdev_tty[0];
208
209 return ((*tp->t_linesw->l_read)(tp, uio, flag));
210 }
211
212
213 int
214 biconsdevwrite(dev_t dev, struct uio *uio, int flag)
215 {
216 struct tty *tp = &biconsdev_tty[0];
217
218 return ((*tp->t_linesw->l_write)(tp, uio, flag));
219 }
220
221
222 int
223 biconsdevpoll(dev_t dev, int events, struct proc *p)
224 {
225 struct tty *tp = &biconsdev_tty[0];
226
227 return ((*tp->t_linesw->l_poll)(tp, events, p));
228 }
229
230
231 struct tty *
232 biconsdevtty(dev_t dev)
233 {
234 struct tty *tp = &biconsdev_tty[0];
235
236 return (tp);
237 }
238
239 int
240 biconsdevioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
241 {
242 struct tty *tp = &biconsdev_tty[0];
243 int error;
244
245 if ((error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, p)) !=
246 EPASSTHROUGH)
247 return (error);
248 return (ttioctl(tp, cmd, data, flag, p));
249 }
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