1 /* $NetBSD: biconsdev.c,v 1.11 2005/09/06 21:40:39 kleink 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 1.11 2005/09/06 21:40:39 kleink 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 && 185 suser(p->p_ucred, &p->p_acflag) != 0) 186 return (EBUSY); 187 188 status = (*tp->t_linesw->l_open)(dev, tp); 189 return status; 190 } 191 192 193 int 194 biconsdevclose(dev_t dev, int flag, int mode, struct proc *p) 195 { 196 struct tty *tp = &biconsdev_tty[0]; 197 198 (*tp->t_linesw->l_close)(tp, flag); 199 ttyclose(tp); 200 201 return (0); 202 } 203 204 205 int 206 biconsdevread(dev_t dev, struct uio *uio, int flag) 207 { 208 struct tty *tp = &biconsdev_tty[0]; 209 210 return ((*tp->t_linesw->l_read)(tp, uio, flag)); 211 } 212 213 214 int 215 biconsdevwrite(dev_t dev, struct uio *uio, int flag) 216 { 217 struct tty *tp = &biconsdev_tty[0]; 218 219 return ((*tp->t_linesw->l_write)(tp, uio, flag)); 220 } 221 222 223 int 224 biconsdevpoll(dev_t dev, int events, struct proc *p) 225 { 226 struct tty *tp = &biconsdev_tty[0]; 227 228 return ((*tp->t_linesw->l_poll)(tp, events, p)); 229 } 230 231 232 struct tty * 233 biconsdevtty(dev_t dev) 234 { 235 struct tty *tp = &biconsdev_tty[0]; 236 237 return (tp); 238 } 239 240 int 241 biconsdevioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 242 { 243 struct tty *tp = &biconsdev_tty[0]; 244 int error; 245 246 if ((error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, p)) != 247 EPASSTHROUGH) 248 return (error); 249 return (ttioctl(tp, cmd, data, flag, p)); 250 } 251