312 lines
7.5 KiB
C
312 lines
7.5 KiB
C
/* $NetBSD: sunkbd.c,v 1.1 2000/09/21 22:25:08 eeh Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)kbd.c 8.2 (Berkeley) 10/30/93
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*/
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/*
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* Keyboard driver (/dev/kbd -- note that we do not have minor numbers
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* [yet?]). Translates incoming bytes to ASCII or to `firm_events' and
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* passes them up to the appropriate reader.
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*/
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/*
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* Keyboard interface line discipline.
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#include <sys/time.h>
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#include <sys/select.h>
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#include <sys/syslog.h>
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#include <sys/fcntl.h>
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#include <sys/tty.h>
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#include <dev/cons.h>
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#include <machine/vuid_event.h>
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#include <machine/kbd.h>
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#include <dev/sun/event_var.h>
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#include <dev/sun/kbd_xlate.h>
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#include <dev/sun/kbdvar.h>
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#include <dev/sun/kbd_ms_ttyvar.h>
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#include "kbd.h"
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#if NKBD > 0
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/****************************************************************
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* Interface to the lower layer (ttycc)
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****************************************************************/
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static int sunkbd_match(struct device *, struct cfdata *, void *);
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static void sunkbd_attach(struct device *, struct device *, void *);
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static void sunkbd_write_data(struct kbd_softc *, int);
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static int sunkbdiopen(struct device *, int mode);
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int sunkbdinput(int, struct tty *);
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int sunkbdstart(struct tty *);
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struct cfattach kbd_ca = {
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sizeof(struct kbd_softc), sunkbd_match, sunkbd_attach
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};
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/*
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* sunkbd_match: how is this tty channel configured?
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*/
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int
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sunkbd_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct kbd_ms_tty_attach_args *args = aux;
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if (strcmp(args->kmta_name, "keyboard") == 0)
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return (1);
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return 0;
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}
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void
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sunkbd_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct kbd_softc *k = (void *) self;
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struct kbd_ms_tty_attach_args *args = aux;
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struct cfdata *cf;
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struct tty *tp = args->kmta_tp;
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struct termios t;
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struct cons_channel *cc;
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int kbd_unit;
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/* Remove tty from system */
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#if 0
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tty_detach(tp);
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callout_stop(&tp->t_outq_ch);
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callout_stop(&tp->t_rstrt_ch);
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#endif
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/* Set up the proper line discipline. */
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tp->t_line = 7;
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tp->t_oflag &= ~OPOST;
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tp->t_dev = args->kmta_dev;
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/* link the structures together. */
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k->k_priv = tp;
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tp->t_sc = (void *)k;
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cf = k->k_dev.dv_cfdata;
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kbd_unit = k->k_dev.dv_unit;
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k->k_deviopen = sunkbdiopen;
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k->k_deviclose = NULL;
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k->k_write_data = sunkbd_write_data;
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if ((cc = malloc(sizeof *cc, M_DEVBUF, M_NOWAIT)) == NULL)
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return;
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cc->cc_dev = self;
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cc->cc_iopen = kbd_cc_open;
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cc->cc_iclose = kbd_cc_close;
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cc->cc_upstream = NULL;
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if (args->kmta_consdev) {
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/*
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* Hookup ourselves as the console input channel
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*/
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args->kmta_baud = KBD_BPS;
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args->kmta_cflag = CLOCAL|CS8;
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cons_attach_input(cc, args->kmta_consdev);
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/* Tell our parent what the console should be. */
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args->kmta_consdev = cn_tab;
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k->k_isconsole = 1;
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printf(" (console input)");
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} else {
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extern void kd_attach_input(struct cons_channel *);
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kd_attach_input(cc);
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}
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k->k_cc = cc;
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printf("attached \n");
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callout_init(&k->k_repeat_ch);
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/* Do this before any calls to kbd_rint(). */
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kbd_xlate_init(&k->k_state);
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/* XXX - Do this in open? */
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k->k_repeat_start = hz/2;
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k->k_repeat_step = hz/20;
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/* Magic sequence. */
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k->k_magic1 = KBD_L1;
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k->k_magic2 = KBD_A;
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}
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/*
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* Internal open routine. This really should be inside com.c
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* But I'm putting it here until we have a generic internal open
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* mechanism.
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*/
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int
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sunkbdiopen(dev, flags)
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struct device *dev;
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int flags;
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{
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struct kbd_softc *k = (void *) dev;
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struct tty *tp = (struct tty *)k->k_priv;
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struct proc *p = curproc;
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struct termios t;
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int maj;
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maj = major(tp->t_dev);
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if (!p) p = &proc0;
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/* Open the lower device */
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(*cdevsw[maj].d_open)(tp->t_dev, O_NONBLOCK|flags, 0/* ignored? */, p);
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/* Now configure it for the console. */
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tp->t_ospeed = 0;
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t.c_ispeed = KBD_BPS;
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t.c_ospeed = KBD_BPS;
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t.c_cflag = CLOCAL|CS8;
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(*tp->t_param)(tp, &t);
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}
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/*
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* TTY interface to handle input.
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*/
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int
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sunkbdinput(c, tp)
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int c;
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struct tty *tp;
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{
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struct kbd_softc *k = (void *) tp->t_sc;
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u_char *cc;
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int error;
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cc = tp->t_cc;
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/*
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* Handle exceptional conditions (break, parity, framing).
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*/
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if ((error = ((c & TTY_ERRORMASK))) != 0) {
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/*
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* After garbage, flush pending input, and
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* send a reset to resync key translation.
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*/
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log(LOG_ERR, "%s: input error (0x%x)\n",
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k->k_dev.dv_xname, c);
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c &= TTY_CHARMASK;
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if (!k->k_txflags & K_TXBUSY) {
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ttyflush(tp, FREAD | FWRITE);
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goto send_reset;
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}
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}
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/*
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* Check for input buffer overflow
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*/
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if (tp->t_rawq.c_cc + tp->t_canq.c_cc >= TTYHOG) {
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log(LOG_ERR, "%s: input overrun\n",
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k->k_dev.dv_xname);
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goto send_reset;
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}
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/* Pass this up to the "middle" layer. */
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kbd_input_raw(k, c);
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return (-1);
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send_reset:
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/* Send a reset to resync translation. */
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kbd_output(k, KBD_CMD_RESET);
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return (ttstart(tp));
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}
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int
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sunkbdstart(tp)
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struct tty *tp;
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{
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struct kbd_softc *k = (void *) tp->t_sc;
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/*
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* Transmit done. Try to send more, or
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* clear busy and wakeup drain waiters.
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*/
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k->k_txflags &= ~K_TXBUSY;
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kbd_start_tx(k);
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ttstart(tp);
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}
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/*
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* used by kbd_start_tx();
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*/
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void
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sunkbd_write_data(k, c)
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struct kbd_softc *k;
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int c;
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{
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struct tty *tp = (struct tty *)k->k_priv;
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int s;
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s = spltty();
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ttyoutput(c, tp);
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ttstart(tp);
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splx(s);
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}
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#endif
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