No longer used.
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gwr
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/* $NetBSD: prom.c,v 1.15 1995/04/10 06:14:57 mycroft Exp $ */
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/*
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* Copyright (c) 1993 Adam Glass
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* All rights reserved.
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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 Adam Glass.
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* 4. The name of the Author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Adam Glass ``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 Adam Glass 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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#include "prom.h"
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/buf.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/file.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <machine/autoconf.h>
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#include <machine/mon.h>
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#include <dev/cons.h>
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#include "../sun3/interreg.h"
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/*
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* cleanup:
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* get autoconfiguration right, right style
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* not a true serial driver but a tty driver, i.e no carrier
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* make sure start is non-blocking
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* add read support via timeouts
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*/
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void promattach __P((struct device *, struct device *, void *));
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struct prom_softc {
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struct device sc_dev;
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int sc_flags;
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int sc_nopen;
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};
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struct tty *prom_tty[NPROM];
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struct cfdriver promcd = {
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NULL, "prom", always_match, promattach, DV_TTY, sizeof(struct prom_softc)
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};
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#define UNIT_TO_PROM_SC(unit) promcd.cd_devs[unit]
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#ifndef PROM_RECEIVE_FREQ
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#define PROM_RECEIVE_FREQ 10
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#endif
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int promopen __P((dev_t, int, int, struct proc *));
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int promclose __P((dev_t, int, int, struct proc *));
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int promread __P((dev_t, struct uio *, int));
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int promwrite __P((dev_t, struct uio *, int));
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int promioctl __P((dev_t, int, caddr_t, int, struct proc *));
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int promstop __P((struct tty *, int));
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static int promparam __P((struct tty *, struct termios *));
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static void promstart __P((struct tty *));
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static void promreceive __P((void *));
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void
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promattach(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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printf("\n");
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}
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int
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promopen(dev, flag, mode, p)
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dev_t dev;
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int flag, mode;
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struct proc *p;
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{
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struct tty *tp;
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struct prom_softc *sc;
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int unit, result;
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unit = minor(dev);
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if (unit >= promcd.cd_ndevs)
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return ENXIO;
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sc = UNIT_TO_PROM_SC(unit);
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if (sc == NULL)
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return ENXIO;
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if (prom_tty[unit] == NULL)
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tp = prom_tty[unit] = ttymalloc();
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else
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tp = prom_tty[unit];
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tp->t_oproc = promstart;
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tp->t_param = promparam;
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tp->t_dev = dev;
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if ((tp->t_state & TS_ISOPEN) == 0) {
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tp->t_state |= TS_WOPEN;
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ttychars(tp);
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if (tp->t_ispeed == 0) {
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tp->t_iflag = TTYDEF_IFLAG;
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tp->t_oflag = TTYDEF_OFLAG;
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tp->t_cflag = TTYDEF_CFLAG;
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tp->t_lflag = TTYDEF_LFLAG;
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tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
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}
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promparam(tp, &tp->t_termios);
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ttsetwater(tp);
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} else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) {
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return EBUSY;
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}
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tp->t_state |= TS_CARR_ON;
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result = (*linesw[tp->t_line].l_open)(dev, tp);
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if (result)
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return result;
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timeout(promreceive, tp, hz/PROM_RECEIVE_FREQ);
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return 0;
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}
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int
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promclose(dev, flag, mode, p)
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dev_t dev;
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int flag, mode;
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struct proc *p;
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{
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struct tty *tp;
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int unit;
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struct prom_softc *sc;
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unit = minor(dev);
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sc = UNIT_TO_PROM_SC(unit);
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tp = prom_tty[unit];
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(*linesw[tp->t_line].l_close)(tp, flag);
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return ttyclose(tp);
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}
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int
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promread(dev, uio, flag)
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dev_t dev;
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struct uio *uio;
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int flag;
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{
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register struct tty *tp;
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tp = prom_tty[minor(dev)];
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return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
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}
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int
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promwrite(dev, uio, flag)
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dev_t dev;
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struct uio *uio;
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int flag;
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{
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register struct tty *tp;
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tp = prom_tty[minor(dev)];
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return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
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}
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int
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promioctl(dev, cmd, data, flag, p)
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dev_t dev;
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u_long cmd;
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caddr_t data;
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int flag;
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struct proc *p;
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{
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register struct tty *tp;
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int error;
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tp = prom_tty[minor(dev)];
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error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
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if (error >= 0)
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return error;
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error = ttioctl(tp, cmd, data, flag, p);
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if (error >= 0)
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return error;
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return ENOTTY;
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}
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void
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promstart(tp)
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struct tty *tp;
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{
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int s, c, count;
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u_char outbuf[50];
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u_char *bufp;
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s = spltty();
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if (tp->t_state & (TS_BUSY|TS_TTSTOP|TS_TIMEOUT))
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goto out;
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tp->t_state |= TS_BUSY;
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if (tp->t_outq.c_cc <= tp->t_lowat) {
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if (tp->t_state & TS_ASLEEP) {
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tp->t_state &=~ TS_ASLEEP;
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wakeup((caddr_t)&tp->t_outq);
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}
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selwakeup(&tp->t_wsel);
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}
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count = q_to_b(&tp->t_outq, outbuf, 49);
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if (count) {
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outbuf[count] = '\0';
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(void) splhigh();
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mon_printf("%s", outbuf);
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(void) spltty();
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}
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tp->t_state &= ~TS_BUSY;
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out:
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splx(s);
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}
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void
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promstop(tp, flag)
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struct tty *tp;
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int flag;
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{
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}
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static int
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promparam(tp, t)
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struct tty *tp;
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struct termios *t;
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{
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struct prom_softc *sc;
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if (t->c_ispeed == 0 || (t->c_ispeed != t->c_ospeed))
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return EINVAL;
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tp->t_ispeed = t->c_ispeed;
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tp->t_ospeed = t->c_ospeed;
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tp->t_cflag = t->c_cflag;
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return 0;
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}
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static void
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promreceive(arg)
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void *arg;
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{
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struct tty *tp = arg;
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int c, s;
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extern unsigned int orig_nmi_vector;
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extern int nmi_intr();
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s = spltty();
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if (tp->t_state & TS_ISOPEN) {
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if ((tp->t_state & TS_BUSY) == 0) {
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set_clk_mode(0, IREG_CLOCK_ENAB_7|IREG_CLOCK_ENAB_5, 0);
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isr_add_custom(7, orig_nmi_vector);
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set_clk_mode(IREG_CLOCK_ENAB_7, 0, 1);
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c = mon_may_getchar();
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set_clk_mode(0, IREG_CLOCK_ENAB_7|IREG_CLOCK_ENAB_5, 0);
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isr_add_custom(7, nmi_intr);
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set_clk_mode(IREG_CLOCK_ENAB_5, 0, 1);
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if (c != -1)
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(*linesw[tp->t_line].l_rint)(c, tp);
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}
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timeout(promreceive, tp, hz/PROM_RECEIVE_FREQ);
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}
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splx(s);
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}
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void
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promcnprobe(cp)
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struct consdev *cp;
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{
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int prommajor;
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/* locate the major number */
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for (prommajor = 0; prommajor < nchrdev; prommajor++)
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if (cdevsw[prommajor].d_open == promopen)
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break;
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cp->cn_dev = makedev(prommajor, 0);
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cp->cn_pri = CN_INTERNAL; /* will always exist but you don't
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* want to use it unless you have to
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*/
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}
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void
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promcninit(cp)
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struct consdev *cp;
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{
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mon_printf("console on prom0\n");
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}
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int
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promcngetc(dev)
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dev_t dev;
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{
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mon_printf("not sure how to do promcngetc() yet\n");
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}
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/*
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* Console kernel output character routine.
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*/
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void
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promcnputc(dev, c)
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dev_t dev;
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int c;
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{
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int s;
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s = splhigh();
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if (minor(dev) != 0)
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mon_printf("non unit 0 prom console???\n");
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mon_putchar(c);
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splx(s);
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}
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