sunkbd.c revision 1.13
1 /* $NetBSD: sunkbd.c,v 1.13 2002/10/03 16:13:26 uwe Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)kbd.c 8.2 (Berkeley) 10/30/93 45 */ 46 47 /* 48 * /dev/kbd lower layer for sun keyboard off a tty (line discipline). 49 * This driver uses kbdsun middle layer to hook up to /dev/kbd. 50 */ 51 52 /* 53 * Keyboard interface line discipline. 54 * 55 */ 56 57 #include <sys/cdefs.h> 58 __KERNEL_RCSID(0, "$NetBSD: sunkbd.c,v 1.13 2002/10/03 16:13:26 uwe Exp $"); 59 60 #include <sys/param.h> 61 #include <sys/systm.h> 62 #include <sys/conf.h> 63 #include <sys/device.h> 64 #include <sys/kernel.h> 65 #include <sys/malloc.h> 66 #include <sys/proc.h> 67 #include <sys/signal.h> 68 #include <sys/signalvar.h> 69 #include <sys/time.h> 70 #include <sys/select.h> 71 #include <sys/syslog.h> 72 #include <sys/fcntl.h> 73 #include <sys/tty.h> 74 75 #include <dev/cons.h> 76 #include <machine/vuid_event.h> 77 #include <machine/kbd.h> 78 #include <dev/sun/event_var.h> 79 #include <dev/sun/kbd_xlate.h> 80 #include <dev/sun/kbdvar.h> 81 #include <dev/sun/kbdsunvar.h> 82 #include <dev/sun/kbd_ms_ttyvar.h> 83 84 #include "kbd.h" 85 #if NKBD > 0 86 87 /**************************************************************** 88 * Interface to the lower layer (ttycc) 89 ****************************************************************/ 90 91 static int sunkbd_match(struct device *, struct cfdata *, void *); 92 static void sunkbd_attach(struct device *, struct device *, void *); 93 static void sunkbd_write_data(struct kbd_sun_softc *, int); 94 static int sunkbdiopen(struct device *, int mode); 95 96 int sunkbdinput(int, struct tty *); 97 int sunkbdstart(struct tty *); 98 99 /* Default keyboard baud rate */ 100 int sunkbd_bps = KBD_DEFAULT_BPS; 101 102 CFATTACH_DECL(kbd_tty, sizeof(struct kbd_sun_softc), 103 sunkbd_match, sunkbd_attach, NULL, NULL); 104 105 struct linesw sunkbd_disc = 106 { "sunkbd", 7, ttylopen, ttylclose, ttyerrio, ttyerrio, ttynullioctl, 107 sunkbdinput, sunkbdstart, nullmodem, ttpoll }; /* 7- SUNKBDDISC */ 108 109 /* 110 * sunkbd_match: how is this tty channel configured? 111 */ 112 int 113 sunkbd_match(parent, cf, aux) 114 struct device *parent; 115 struct cfdata *cf; 116 void *aux; 117 { 118 struct kbd_ms_tty_attach_args *args = aux; 119 120 if (strcmp(args->kmta_name, "keyboard") == 0) 121 return (1); 122 123 return 0; 124 } 125 126 void 127 sunkbd_attach(parent, self, aux) 128 struct device *parent, *self; 129 void *aux; 130 { 131 struct kbd_sun_softc *k = (void *) self; 132 struct kbd_ms_tty_attach_args *args = aux; 133 struct tty *tp = args->kmta_tp; 134 struct cons_channel *cc; 135 136 /* Set up the proper line discipline. */ 137 ttyldisc_init(); 138 if (ttyldisc_add(&sunkbd_disc, -1) == -1) 139 panic("sunkbd_attach: sunkbd_disc"); 140 tp->t_linesw = &sunkbd_disc; 141 tp->t_oflag &= ~OPOST; 142 tp->t_dev = args->kmta_dev; 143 144 /* link the structures together. */ 145 k->k_priv = tp; 146 tp->t_sc = (void *)k; 147 148 /* provide upper layer with a link to the middle layer */ 149 k->k_kbd.k_ops = &kbd_ops_sun; 150 151 /* provide middle layer with a link to the lower layer (i.e. us) */ 152 k->k_deviopen = sunkbdiopen; 153 k->k_deviclose = NULL; 154 k->k_write_data = sunkbd_write_data; 155 156 if ((cc = malloc(sizeof *cc, M_DEVBUF, M_NOWAIT)) == NULL) 157 return; 158 159 cc->cc_dev = self; 160 cc->cc_iopen = kbd_cc_open; 161 cc->cc_iclose = kbd_cc_close; 162 cc->cc_upstream = NULL; 163 if (args->kmta_consdev) { 164 char magic[4]; 165 166 /* 167 * Hookup ourselves as the console input channel 168 */ 169 args->kmta_baud = sunkbd_bps; 170 args->kmta_cflag = CLOCAL|CS8; 171 cons_attach_input(cc, args->kmta_consdev); 172 173 /* Tell our parent what the console should be. */ 174 args->kmta_consdev = cn_tab; 175 k->k_kbd.k_isconsole = 1; 176 printf(" (console input)"); 177 178 /* Set magic to "L1-A" */ 179 magic[0] = KBD_L1; 180 magic[1] = KBD_A; 181 magic[2] = 0; 182 cn_set_magic(magic); 183 } else { 184 extern void kd_attach_input(struct cons_channel *); 185 186 kd_attach_input(cc); 187 } 188 k->k_kbd.k_cc = cc; 189 190 printf("\n"); 191 192 callout_init(&k->k_repeat_ch); 193 194 /* Do this before any calls to kbd_rint(). */ 195 kbd_xlate_init(&k->k_kbd.k_state); 196 197 /* XXX - Do this in open? */ 198 k->k_repeat_start = hz/2; 199 k->k_repeat_step = hz/20; 200 201 /* Magic sequence. */ 202 k->k_magic1 = KBD_L1; 203 k->k_magic2 = KBD_A; 204 } 205 206 /* 207 * Internal open routine. This really should be inside com.c 208 * But I'm putting it here until we have a generic internal open 209 * mechanism. 210 */ 211 int 212 sunkbdiopen(dev, flags) 213 struct device *dev; 214 int flags; 215 { 216 struct kbd_sun_softc *k = (void *) dev; 217 struct tty *tp = (struct tty *)k->k_priv; 218 struct proc *p = curproc; 219 struct termios t; 220 const struct cdevsw *cdev; 221 int error; 222 223 if (p == NULL) 224 p = &proc0; 225 226 cdev = cdevsw_lookup(tp->t_dev); 227 if (cdev == NULL) 228 return (ENXIO); 229 230 /* Open the lower device */ 231 if ((error = (*cdev->d_open)(tp->t_dev, O_NONBLOCK|flags, 232 0/* ignored? */, p)) != 0) 233 return (error); 234 235 /* Now configure it for the console. */ 236 tp->t_ospeed = 0; 237 t.c_ispeed = sunkbd_bps; 238 t.c_ospeed = sunkbd_bps; 239 t.c_cflag = CLOCAL|CS8; 240 (*tp->t_param)(tp, &t); 241 242 return (0); 243 } 244 245 /* 246 * TTY interface to handle input. 247 */ 248 int 249 sunkbdinput(c, tp) 250 int c; 251 struct tty *tp; 252 { 253 struct kbd_sun_softc *k = (void *) tp->t_sc; 254 u_char *cc; 255 int error; 256 257 258 cc = tp->t_cc; 259 260 /* 261 * Handle exceptional conditions (break, parity, framing). 262 */ 263 if ((error = ((c & TTY_ERRORMASK))) != 0) { 264 /* 265 * After garbage, flush pending input, and 266 * send a reset to resync key translation. 267 */ 268 log(LOG_ERR, "%s: input error (0x%x)\n", 269 k->k_kbd.k_dev.dv_xname, c); 270 c &= TTY_CHARMASK; 271 if (!k->k_txflags & K_TXBUSY) { 272 ttyflush(tp, FREAD | FWRITE); 273 goto send_reset; 274 } 275 } 276 277 /* 278 * Check for input buffer overflow 279 */ 280 if (tp->t_rawq.c_cc + tp->t_canq.c_cc >= TTYHOG) { 281 log(LOG_ERR, "%s: input overrun\n", 282 k->k_kbd.k_dev.dv_xname); 283 goto send_reset; 284 } 285 286 /* Pass this up to the "middle" layer. */ 287 kbd_sun_input(k, c); 288 return (-1); 289 290 send_reset: 291 /* Send a reset to resync translation. */ 292 kbd_sun_output(k, KBD_CMD_RESET); 293 return (ttstart(tp)); 294 295 } 296 297 int 298 sunkbdstart(tp) 299 struct tty *tp; 300 { 301 struct kbd_sun_softc *k = (void *) tp->t_sc; 302 303 /* 304 * Transmit done. Try to send more, or 305 * clear busy and wakeup drain waiters. 306 */ 307 k->k_txflags &= ~K_TXBUSY; 308 kbd_sun_start_tx(k); 309 ttstart(tp); 310 return (0); 311 } 312 /* 313 * used by kbd_sun_start_tx(); 314 */ 315 void 316 sunkbd_write_data(k, c) 317 struct kbd_sun_softc *k; 318 int c; 319 { 320 struct tty *tp = (struct tty *)k->k_priv; 321 int s; 322 323 s = spltty(); 324 ttyoutput(c, tp); 325 ttstart(tp); 326 splx(s); 327 } 328 329 #endif 330
Indexes created Mon Sep 29 21:09:56 GMT 2025