sunkbd.c revision 1.1
1 /* $NetBSD: sunkbd.c,v 1.1 2000/09/21 22:25:08 eeh 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 * Keyboard driver (/dev/kbd -- note that we do not have minor numbers 49 * [yet?]). Translates incoming bytes to ASCII or to `firm_events' and 50 * passes them up to the appropriate reader. 51 */ 52 53 /* 54 * Keyboard interface line discipline. 55 * 56 */ 57 58 #include <sys/param.h> 59 #include <sys/systm.h> 60 #include <sys/conf.h> 61 #include <sys/device.h> 62 #include <sys/kernel.h> 63 #include <sys/malloc.h> 64 #include <sys/proc.h> 65 #include <sys/signal.h> 66 #include <sys/signalvar.h> 67 #include <sys/time.h> 68 #include <sys/select.h> 69 #include <sys/syslog.h> 70 #include <sys/fcntl.h> 71 #include <sys/tty.h> 72 73 #include <dev/cons.h> 74 #include <machine/vuid_event.h> 75 #include <machine/kbd.h> 76 #include <dev/sun/event_var.h> 77 #include <dev/sun/kbd_xlate.h> 78 #include <dev/sun/kbdvar.h> 79 #include <dev/sun/kbd_ms_ttyvar.h> 80 81 #include "kbd.h" 82 #if NKBD > 0 83 84 /**************************************************************** 85 * Interface to the lower layer (ttycc) 86 ****************************************************************/ 87 88 static int sunkbd_match(struct device *, struct cfdata *, void *); 89 static void sunkbd_attach(struct device *, struct device *, void *); 90 static void sunkbd_write_data(struct kbd_softc *, int); 91 static int sunkbdiopen(struct device *, int mode); 92 93 int sunkbdinput(int, struct tty *); 94 int sunkbdstart(struct tty *); 95 96 97 struct cfattach kbd_ca = { 98 sizeof(struct kbd_softc), sunkbd_match, sunkbd_attach 99 }; 100 101 /* 102 * sunkbd_match: how is this tty channel configured? 103 */ 104 int 105 sunkbd_match(parent, cf, aux) 106 struct device *parent; 107 struct cfdata *cf; 108 void *aux; 109 { 110 struct kbd_ms_tty_attach_args *args = aux; 111 112 if (strcmp(args->kmta_name, "keyboard") == 0) 113 return (1); 114 115 return 0; 116 } 117 118 void 119 sunkbd_attach(parent, self, aux) 120 struct device *parent, *self; 121 void *aux; 122 123 { 124 struct kbd_softc *k = (void *) self; 125 struct kbd_ms_tty_attach_args *args = aux; 126 struct cfdata *cf; 127 struct tty *tp = args->kmta_tp; 128 struct termios t; 129 struct cons_channel *cc; 130 int kbd_unit; 131 132 /* Remove tty from system */ 133 #if 0 134 tty_detach(tp); 135 callout_stop(&tp->t_outq_ch); 136 callout_stop(&tp->t_rstrt_ch); 137 #endif 138 /* Set up the proper line discipline. */ 139 tp->t_line = 7; 140 tp->t_oflag &= ~OPOST; 141 tp->t_dev = args->kmta_dev; 142 143 /* link the structures together. */ 144 k->k_priv = tp; 145 tp->t_sc = (void *)k; 146 147 cf = k->k_dev.dv_cfdata; 148 kbd_unit = k->k_dev.dv_unit; 149 150 k->k_deviopen = sunkbdiopen; 151 k->k_deviclose = NULL; 152 k->k_write_data = sunkbd_write_data; 153 154 if ((cc = malloc(sizeof *cc, M_DEVBUF, M_NOWAIT)) == NULL) 155 return; 156 157 cc->cc_dev = self; 158 cc->cc_iopen = kbd_cc_open; 159 cc->cc_iclose = kbd_cc_close; 160 cc->cc_upstream = NULL; 161 if (args->kmta_consdev) { 162 163 /* 164 * Hookup ourselves as the console input channel 165 */ 166 args->kmta_baud = KBD_BPS; 167 args->kmta_cflag = CLOCAL|CS8; 168 cons_attach_input(cc, args->kmta_consdev); 169 170 /* Tell our parent what the console should be. */ 171 args->kmta_consdev = cn_tab; 172 k->k_isconsole = 1; 173 printf(" (console input)"); 174 } else { 175 extern void kd_attach_input(struct cons_channel *); 176 177 kd_attach_input(cc); 178 } 179 k->k_cc = cc; 180 181 printf("attached \n"); 182 183 callout_init(&k->k_repeat_ch); 184 185 /* Do this before any calls to kbd_rint(). */ 186 kbd_xlate_init(&k->k_state); 187 188 /* XXX - Do this in open? */ 189 k->k_repeat_start = hz/2; 190 k->k_repeat_step = hz/20; 191 192 /* Magic sequence. */ 193 k->k_magic1 = KBD_L1; 194 k->k_magic2 = KBD_A; 195 } 196 197 /* 198 * Internal open routine. This really should be inside com.c 199 * But I'm putting it here until we have a generic internal open 200 * mechanism. 201 */ 202 int 203 sunkbdiopen(dev, flags) 204 struct device *dev; 205 int flags; 206 { 207 struct kbd_softc *k = (void *) dev; 208 struct tty *tp = (struct tty *)k->k_priv; 209 struct proc *p = curproc; 210 struct termios t; 211 int maj; 212 213 maj = major(tp->t_dev); 214 if (!p) p = &proc0; 215 216 /* Open the lower device */ 217 (*cdevsw[maj].d_open)(tp->t_dev, O_NONBLOCK|flags, 0/* ignored? */, p); 218 219 /* Now configure it for the console. */ 220 tp->t_ospeed = 0; 221 t.c_ispeed = KBD_BPS; 222 t.c_ospeed = KBD_BPS; 223 t.c_cflag = CLOCAL|CS8; 224 (*tp->t_param)(tp, &t); 225 226 } 227 228 /* 229 * TTY interface to handle input. 230 */ 231 int 232 sunkbdinput(c, tp) 233 int c; 234 struct tty *tp; 235 { 236 struct kbd_softc *k = (void *) tp->t_sc; 237 u_char *cc; 238 int error; 239 240 241 cc = tp->t_cc; 242 243 /* 244 * Handle exceptional conditions (break, parity, framing). 245 */ 246 if ((error = ((c & TTY_ERRORMASK))) != 0) { 247 /* 248 * After garbage, flush pending input, and 249 * send a reset to resync key translation. 250 */ 251 log(LOG_ERR, "%s: input error (0x%x)\n", 252 k->k_dev.dv_xname, c); 253 c &= TTY_CHARMASK; 254 if (!k->k_txflags & K_TXBUSY) { 255 ttyflush(tp, FREAD | FWRITE); 256 goto send_reset; 257 } 258 } 259 260 /* 261 * Check for input buffer overflow 262 */ 263 if (tp->t_rawq.c_cc + tp->t_canq.c_cc >= TTYHOG) { 264 log(LOG_ERR, "%s: input overrun\n", 265 k->k_dev.dv_xname); 266 goto send_reset; 267 } 268 269 /* Pass this up to the "middle" layer. */ 270 kbd_input_raw(k, c); 271 return (-1); 272 273 send_reset: 274 /* Send a reset to resync translation. */ 275 kbd_output(k, KBD_CMD_RESET); 276 return (ttstart(tp)); 277 278 } 279 280 int 281 sunkbdstart(tp) 282 struct tty *tp; 283 { 284 struct kbd_softc *k = (void *) tp->t_sc; 285 286 /* 287 * Transmit done. Try to send more, or 288 * clear busy and wakeup drain waiters. 289 */ 290 k->k_txflags &= ~K_TXBUSY; 291 kbd_start_tx(k); 292 ttstart(tp); 293 } 294 /* 295 * used by kbd_start_tx(); 296 */ 297 void 298 sunkbd_write_data(k, c) 299 struct kbd_softc *k; 300 int c; 301 { 302 struct tty *tp = (struct tty *)k->k_priv; 303 int s; 304 305 s = spltty(); 306 ttyoutput(c, tp); 307 ttstart(tp); 308 splx(s); 309 } 310 311 #endif 312
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