biconsdev.c revision 1.3
1 /* $NetBSD: biconsdev.c,v 1.3 2001/11/13 12:47:56 lukem 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 1.3 2001/11/13 12:47:56 lukem Exp $"); 75 76 #include "biconsdev.h" 77 #if NBICONSDEV > 0 78 79 #include <sys/param.h> 80 #include <sys/proc.h> 81 #include <sys/systm.h> 82 #include <sys/buf.h> 83 #include <sys/ioctl.h> 84 #include <sys/tty.h> 85 #include <sys/conf.h> 86 87 #include <dev/cons.h> 88 #include <dev/hpc/bicons.h> 89 #include <dev/hpc/biconsvar.h> 90 91 struct tty biconsdev_tty[NBICONSDEV]; 92 void biconsdevattach(int); 93 static void biconsdev_output(struct tty *); 94 95 cdev_decl(biconsdev); 96 97 void 98 biconsdevattach(int n) 99 { 100 struct tty *tp = &biconsdev_tty[0]; 101 int maj; 102 103 /* locate the major number */ 104 for (maj = 0; maj < nchrdev; maj++) 105 if (cdevsw[maj].d_open == biconsdevopen) 106 break; 107 108 /* Set up the tty queues now... */ 109 clalloc(&tp->t_rawq, 1024, 1); 110 clalloc(&tp->t_canq, 1024, 1); 111 /* output queue doesn't need quoting */ 112 clalloc(&tp->t_outq, 1024, 0); 113 /* Set default line discipline. */ 114 tp->t_linesw = linesw[0]; 115 116 117 tp->t_dev = makedev(maj, 0); 118 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 119 tp->t_param = (int (*)(struct tty *, struct termios *))nullop; 120 tp->t_winsize.ws_row = bicons_height; 121 tp->t_winsize.ws_col = bicons_width; 122 tp->t_winsize.ws_xpixel = bicons_xpixel; 123 tp->t_winsize.ws_ypixel = bicons_ypixel; 124 tp->t_oproc = biconsdev_output; 125 } 126 127 128 static void 129 biconsdev_output(struct tty *tp) 130 { 131 int s, n; 132 char buf[OBUFSIZ]; 133 134 s = spltty(); 135 if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) { 136 splx(s); 137 return; 138 } 139 tp->t_state |= TS_BUSY; 140 splx(s); 141 n = q_to_b(&tp->t_outq, buf, sizeof(buf)); 142 bicons_putn(buf, n); 143 144 s = spltty(); 145 tp->t_state &= ~TS_BUSY; 146 /* Come back if there's more to do */ 147 if (tp->t_outq.c_cc) { 148 tp->t_state |= TS_TIMEOUT; 149 callout_reset(&tp->t_rstrt_ch, 1, ttrstrt, tp); 150 } 151 if (tp->t_outq.c_cc <= tp->t_lowat) { 152 if (tp->t_state&TS_ASLEEP) { 153 tp->t_state &= ~TS_ASLEEP; 154 wakeup((caddr_t)&tp->t_outq); 155 } 156 selwakeup(&tp->t_wsel); 157 } 158 splx(s); 159 } 160 161 162 int 163 biconsdevopen(dev_t dev, int flag, int mode, struct proc *p) 164 { 165 struct tty *tp = &biconsdev_tty[0]; 166 int status; 167 168 if ((tp->t_state & TS_ISOPEN) == 0) { 169 /* 170 * Leave baud rate alone! 171 */ 172 ttychars(tp); 173 tp->t_iflag = TTYDEF_IFLAG; 174 tp->t_oflag = TTYDEF_OFLAG; 175 tp->t_lflag = TTYDEF_LFLAG; 176 tp->t_cflag = TTYDEF_CFLAG; 177 tp->t_state = TS_ISOPEN | TS_CARR_ON; 178 (void)(*tp->t_param)(tp, &tp->t_termios); 179 ttsetwater(tp); 180 } else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) 181 return (EBUSY); 182 183 status = (*tp->t_linesw->l_open)(dev, tp); 184 return status; 185 } 186 187 188 int 189 biconsdevclose(dev_t dev, int flag, int mode, struct proc *p) 190 { 191 struct tty *tp = &biconsdev_tty[0]; 192 193 (*tp->t_linesw->l_close)(tp, flag); 194 ttyclose(tp); 195 196 return (0); 197 } 198 199 200 int 201 biconsdevread(dev_t dev, struct uio *uio, int flag) 202 { 203 struct tty *tp = &biconsdev_tty[0]; 204 205 return ((*tp->t_linesw->l_read)(tp, uio, flag)); 206 } 207 208 209 int 210 biconsdevwrite(dev_t dev, struct uio *uio, int flag) 211 { 212 struct tty *tp = &biconsdev_tty[0]; 213 214 return ((*tp->t_linesw->l_write)(tp, uio, flag)); 215 } 216 217 218 int 219 biconsdevpoll(dev_t dev, int events, struct proc *p) 220 { 221 struct tty *tp = &biconsdev_tty[0]; 222 223 return ((*tp->t_linesw->l_poll)(tp, events, p)); 224 } 225 226 227 struct tty * 228 biconsdevtty(dev_t dev) 229 { 230 struct tty *tp = &biconsdev_tty[0]; 231 232 return (tp); 233 } 234 235 int 236 biconsdevioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 237 { 238 struct tty *tp = &biconsdev_tty[0]; 239 int error; 240 241 if ((error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, p)) >= 0) 242 return (error); 243 if ((error = ttioctl(tp, cmd, data, flag, p)) >= 0) 244 return (error); 245 return (ENOTTY); 246 } 247 248 void 249 biconsdevstop(struct tty *tp, int rw) 250 { 251 252 } 253 254 #endif /* NBICONSDEV > 0 */ 255
Indexes created Sun Sep 21 20:09:37 GMT 2025