/* $NetBSD: sunkbd.c,v 1.11 2002/10/01 01:05:50 thorpej Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)kbd.c 8.2 (Berkeley) 10/30/93 */ /* * Keyboard driver (/dev/kbd -- note that we do not have minor numbers * [yet?]). Translates incoming bytes to ASCII or to `firm_events' and * passes them up to the appropriate reader. */ /* * Keyboard interface line discipline. * */ #include __KERNEL_RCSID(0, "$NetBSD: sunkbd.c,v 1.11 2002/10/01 01:05:50 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "kbd.h" #if NKBD > 0 /**************************************************************** * Interface to the lower layer (ttycc) ****************************************************************/ static int sunkbd_match(struct device *, struct cfdata *, void *); static void sunkbd_attach(struct device *, struct device *, void *); static void sunkbd_write_data(struct kbd_softc *, int); static int sunkbdiopen(struct device *, int mode); int sunkbdinput(int, struct tty *); int sunkbdstart(struct tty *); /* Default keyboard baud rate */ int sunkbd_bps = KBD_DEFAULT_BPS; CFATTACH_DECL(kbd, sizeof(struct kbd_softc), sunkbd_match, sunkbd_attach, NULL, NULL) struct linesw sunkbd_disc = { "sunkbd", 7, ttylopen, ttylclose, ttyerrio, ttyerrio, ttynullioctl, sunkbdinput, sunkbdstart, nullmodem, ttpoll }; /* 7- SUNKBDDISC */ /* * sunkbd_match: how is this tty channel configured? */ int sunkbd_match(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct kbd_ms_tty_attach_args *args = aux; if (strcmp(args->kmta_name, "keyboard") == 0) return (1); return 0; } void sunkbd_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct kbd_softc *k = (void *) self; struct kbd_ms_tty_attach_args *args = aux; struct cfdata *cf; struct tty *tp = args->kmta_tp; struct cons_channel *cc; int kbd_unit; /* Set up the proper line discipline. */ ttyldisc_init(); if (ttyldisc_add(&sunkbd_disc, -1) == -1) panic("sunkbd_attach: sunkbd_disc"); tp->t_linesw = &sunkbd_disc; tp->t_oflag &= ~OPOST; tp->t_dev = args->kmta_dev; /* link the structures together. */ k->k_priv = tp; tp->t_sc = (void *)k; cf = k->k_dev.dv_cfdata; kbd_unit = k->k_dev.dv_unit; k->k_deviopen = sunkbdiopen; k->k_deviclose = NULL; k->k_write_data = sunkbd_write_data; if ((cc = malloc(sizeof *cc, M_DEVBUF, M_NOWAIT)) == NULL) return; cc->cc_dev = self; cc->cc_iopen = kbd_cc_open; cc->cc_iclose = kbd_cc_close; cc->cc_upstream = NULL; if (args->kmta_consdev) { char magic[4]; /* * Hookup ourselves as the console input channel */ args->kmta_baud = sunkbd_bps; args->kmta_cflag = CLOCAL|CS8; cons_attach_input(cc, args->kmta_consdev); /* Tell our parent what the console should be. */ args->kmta_consdev = cn_tab; k->k_isconsole = 1; printf(" (console input)"); /* Set magic to "L1-A" */ magic[0] = KBD_L1; magic[1] = KBD_A; magic[2] = 0; cn_set_magic(magic); } else { extern void kd_attach_input(struct cons_channel *); kd_attach_input(cc); } k->k_cc = cc; printf("\n"); callout_init(&k->k_repeat_ch); /* Do this before any calls to kbd_rint(). */ kbd_xlate_init(&k->k_state); /* XXX - Do this in open? */ k->k_repeat_start = hz/2; k->k_repeat_step = hz/20; /* Magic sequence. */ k->k_magic1 = KBD_L1; k->k_magic2 = KBD_A; } /* * Internal open routine. This really should be inside com.c * But I'm putting it here until we have a generic internal open * mechanism. */ int sunkbdiopen(dev, flags) struct device *dev; int flags; { struct kbd_softc *k = (void *) dev; struct tty *tp = (struct tty *)k->k_priv; struct proc *p = curproc; struct termios t; const struct cdevsw *cdev; int error; if (p == NULL) p = &proc0; cdev = cdevsw_lookup(tp->t_dev); if (cdev == NULL) return (ENXIO); /* Open the lower device */ if ((error = (*cdev->d_open)(tp->t_dev, O_NONBLOCK|flags, 0/* ignored? */, p)) != 0) return (error); /* Now configure it for the console. */ tp->t_ospeed = 0; t.c_ispeed = sunkbd_bps; t.c_ospeed = sunkbd_bps; t.c_cflag = CLOCAL|CS8; (*tp->t_param)(tp, &t); return (0); } /* * TTY interface to handle input. */ int sunkbdinput(c, tp) int c; struct tty *tp; { struct kbd_softc *k = (void *) tp->t_sc; u_char *cc; int error; cc = tp->t_cc; /* * Handle exceptional conditions (break, parity, framing). */ if ((error = ((c & TTY_ERRORMASK))) != 0) { /* * After garbage, flush pending input, and * send a reset to resync key translation. */ log(LOG_ERR, "%s: input error (0x%x)\n", k->k_dev.dv_xname, c); c &= TTY_CHARMASK; if (!k->k_txflags & K_TXBUSY) { ttyflush(tp, FREAD | FWRITE); goto send_reset; } } /* * Check for input buffer overflow */ if (tp->t_rawq.c_cc + tp->t_canq.c_cc >= TTYHOG) { log(LOG_ERR, "%s: input overrun\n", k->k_dev.dv_xname); goto send_reset; } /* Pass this up to the "middle" layer. */ kbd_input_raw(k, c); return (-1); send_reset: /* Send a reset to resync translation. */ kbd_output(k, KBD_CMD_RESET); return (ttstart(tp)); } int sunkbdstart(tp) struct tty *tp; { struct kbd_softc *k = (void *) tp->t_sc; /* * Transmit done. Try to send more, or * clear busy and wakeup drain waiters. */ k->k_txflags &= ~K_TXBUSY; kbd_start_tx(k); ttstart(tp); return (0); } /* * used by kbd_start_tx(); */ void sunkbd_write_data(k, c) struct kbd_softc *k; int c; { struct tty *tp = (struct tty *)k->k_priv; int s; s = spltty(); ttyoutput(c, tp); ttstart(tp); splx(s); } #endif