biconsdev.c revision 1.6
1 /* $NetBSD: biconsdev.c,v 1.6 2002/09/06 13:18:43 gehenna 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. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 */ 72 73 #include <sys/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: biconsdev.c,v 1.6 2002/09/06 13:18:43 gehenna Exp $"); 75 76 #include "biconsdev.h" 77 #include <sys/param.h> 78 #include <sys/proc.h> 79 #include <sys/systm.h> 80 #include <sys/buf.h> 81 #include <sys/ioctl.h> 82 #include <sys/tty.h> 83 #include <sys/conf.h> 84 85 #include <dev/cons.h> 86 #include <dev/hpc/bicons.h> 87 #include <dev/hpc/biconsvar.h> 88 89 struct tty biconsdev_tty[NBICONSDEV]; 90 void biconsdevattach(int); 91 static void biconsdev_output(struct tty *); 92 93 dev_type_open(biconsdevopen); 94 dev_type_close(biconsdevclose); 95 dev_type_read(biconsdevread); 96 dev_type_write(biconsdevwrite); 97 dev_type_ioctl(biconsdevioctl); 98 dev_type_tty(biconsdevtty); 99 dev_type_poll(biconsdevpoll); 100 101 const struct cdevsw biconsdev_cdevsw = { 102 biconsdevopen, biconsdevclose, biconsdevread, biconsdevwrite, 103 biconsdevioctl, nostop, biconsdevtty, biconsdevpoll, nommap, D_TTY 104 }; 105 106 void 107 biconsdevattach(int n) 108 { 109 struct tty *tp = &biconsdev_tty[0]; 110 int maj; 111 112 /* locate the major number */ 113 maj = cdevsw_lookup_major(&biconsdev_cdevsw); 114 115 /* Set up the tty queues now... */ 116 clalloc(&tp->t_rawq, 1024, 1); 117 clalloc(&tp->t_canq, 1024, 1); 118 /* output queue doesn't need quoting */ 119 clalloc(&tp->t_outq, 1024, 0); 120 /* Set default line discipline. */ 121 tp->t_linesw = linesw[0]; 122 123 124 tp->t_dev = makedev(maj, 0); 125 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 126 tp->t_param = (int (*)(struct tty *, struct termios *))nullop; 127 tp->t_winsize.ws_row = bicons_height; 128 tp->t_winsize.ws_col = bicons_width; 129 tp->t_winsize.ws_xpixel = bicons_xpixel; 130 tp->t_winsize.ws_ypixel = bicons_ypixel; 131 tp->t_oproc = biconsdev_output; 132 } 133 134 135 static void 136 biconsdev_output(struct tty *tp) 137 { 138 int s, n; 139 char buf[OBUFSIZ]; 140 141 s = spltty(); 142 if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) { 143 splx(s); 144 return; 145 } 146 tp->t_state |= TS_BUSY; 147 splx(s); 148 n = q_to_b(&tp->t_outq, buf, sizeof(buf)); 149 bicons_putn(buf, n); 150 151 s = spltty(); 152 tp->t_state &= ~TS_BUSY; 153 /* Come back if there's more to do */ 154 if (tp->t_outq.c_cc) { 155 tp->t_state |= TS_TIMEOUT; 156 callout_reset(&tp->t_rstrt_ch, 1, ttrstrt, tp); 157 } 158 if (tp->t_outq.c_cc <= tp->t_lowat) { 159 if (tp->t_state&TS_ASLEEP) { 160 tp->t_state &= ~TS_ASLEEP; 161 wakeup((caddr_t)&tp->t_outq); 162 } 163 selwakeup(&tp->t_wsel); 164 } 165 splx(s); 166 } 167 168 169 int 170 biconsdevopen(dev_t dev, int flag, int mode, struct proc *p) 171 { 172 struct tty *tp = &biconsdev_tty[0]; 173 int status; 174 175 if ((tp->t_state & TS_ISOPEN) == 0) { 176 /* 177 * Leave baud rate alone! 178 */ 179 ttychars(tp); 180 tp->t_iflag = TTYDEF_IFLAG; 181 tp->t_oflag = TTYDEF_OFLAG; 182 tp->t_lflag = TTYDEF_LFLAG; 183 tp->t_cflag = TTYDEF_CFLAG; 184 tp->t_state = TS_ISOPEN | TS_CARR_ON; 185 (void)(*tp->t_param)(tp, &tp->t_termios); 186 ttsetwater(tp); 187 } else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) 188 return (EBUSY); 189 190 status = (*tp->t_linesw->l_open)(dev, tp); 191 return status; 192 } 193 194 195 int 196 biconsdevclose(dev_t dev, int flag, int mode, struct proc *p) 197 { 198 struct tty *tp = &biconsdev_tty[0]; 199 200 (*tp->t_linesw->l_close)(tp, flag); 201 ttyclose(tp); 202 203 return (0); 204 } 205 206 207 int 208 biconsdevread(dev_t dev, struct uio *uio, int flag) 209 { 210 struct tty *tp = &biconsdev_tty[0]; 211 212 return ((*tp->t_linesw->l_read)(tp, uio, flag)); 213 } 214 215 216 int 217 biconsdevwrite(dev_t dev, struct uio *uio, int flag) 218 { 219 struct tty *tp = &biconsdev_tty[0]; 220 221 return ((*tp->t_linesw->l_write)(tp, uio, flag)); 222 } 223 224 225 int 226 biconsdevpoll(dev_t dev, int events, struct proc *p) 227 { 228 struct tty *tp = &biconsdev_tty[0]; 229 230 return ((*tp->t_linesw->l_poll)(tp, events, p)); 231 } 232 233 234 struct tty * 235 biconsdevtty(dev_t dev) 236 { 237 struct tty *tp = &biconsdev_tty[0]; 238 239 return (tp); 240 } 241 242 int 243 biconsdevioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 244 { 245 struct tty *tp = &biconsdev_tty[0]; 246 int error; 247 248 if ((error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, p)) != 249 EPASSTHROUGH) 250 return (error); 251 return (ttioctl(tp, cmd, data, flag, p)); 252 } 253
Indexes created Mon Sep 22 05:09:51 GMT 2025