476 lines
9.7 KiB
C
476 lines
9.7 KiB
C
/* $NetBSD: pdc.c,v 1.9 2003/07/15 02:29:24 lukem Exp $ */
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/* $OpenBSD: pdc.c,v 1.14 2001/04/29 21:05:43 mickey Exp $ */
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/*
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* Copyright (c) 1998-2001 Michael Shalayeff
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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 Michael Shalayeff.
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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 THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF MIND,
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pdc.c,v 1.9 2003/07/15 02:29:24 lukem Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <sys/tty.h>
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#include <sys/user.h>
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#include <sys/callout.h>
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#include <sys/conf.h>
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#include <dev/cons.h>
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#include <machine/pdc.h>
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#include <machine/iomod.h>
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#include <machine/autoconf.h>
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#include <hp700/hp700/machdep.h>
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typedef
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struct pdc_softc {
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struct device sc_dv;
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struct tty *sc_tty;
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struct callout sc_to;
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} pdcsoftc_t;
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pdcio_t pdc;
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int pdcret[32] PDC_ALIGNMENT;
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char pdc_consbuf[IODC_MINIOSIZ] PDC_ALIGNMENT;
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iodcio_t pdc_cniodc, pdc_kbdiodc;
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pz_device_t *pz_kbd, *pz_cons;
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int CONADDR;
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int pdcmatch __P((struct device *, struct cfdata *, void*));
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void pdcattach __P((struct device *, struct device *, void *));
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CFATTACH_DECL(pdc, sizeof(pdcsoftc_t),
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pdcmatch, pdcattach, NULL, NULL);
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extern struct cfdriver pdc_cd;
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dev_type_open(pdcopen);
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dev_type_close(pdcclose);
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dev_type_read(pdcread);
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dev_type_write(pdcwrite);
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dev_type_ioctl(pdcioctl);
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dev_type_stop(pdcstop);
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dev_type_tty(pdctty);
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dev_type_poll(pdcpoll);
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const struct cdevsw pdc_cdevsw = {
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pdcopen, pdcclose, pdcread, pdcwrite, pdcioctl,
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pdcstop, pdctty, pdcpoll, nommap, ttykqfilter, D_TTY
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};
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void pdcstart __P((struct tty *tp));
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void pdctimeout __P((void *v));
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int pdcparam __P((struct tty *tp, struct termios *));
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int pdccnlookc __P((dev_t dev, int *cp));
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void
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pdc_init()
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{
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static int kbd_iodc[IODC_MAXSIZE/sizeof(int)];
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static int cn_iodc[IODC_MAXSIZE/sizeof(int)];
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int err;
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int pagezero_cookie;
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pagezero_cookie = hp700_pagezero_map();
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/* XXX locore've done it XXX pdc = (pdcio_t)PAGE0->mem_pdc; */
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pz_kbd = &PAGE0->mem_kbd;
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pz_cons = &PAGE0->mem_cons;
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/* XXX should we reset the console/kbd here?
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well, /boot did that for us anyway */
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if ((err = pdc_call((iodcio_t)pdc, 0, PDC_IODC, PDC_IODC_READ,
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pdcret, pz_cons->pz_hpa, IODC_IO, cn_iodc, IODC_MAXSIZE)) < 0 ||
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(err = pdc_call((iodcio_t)pdc, 0, PDC_IODC, PDC_IODC_READ,
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pdcret, pz_kbd->pz_hpa, IODC_IO, kbd_iodc, IODC_MAXSIZE)) < 0) {
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#ifdef DEBUG
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printf("pdc_init: failed reading IODC (%d)\n", err);
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#endif
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}
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pdc_cniodc = (iodcio_t)cn_iodc;
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pdc_kbdiodc = (iodcio_t)kbd_iodc;
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/* XXX make pdc current console */
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cn_tab = &constab[0];
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/* TODO: detect that we are on cereal, and set CONADDR */
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hp700_pagezero_unmap(pagezero_cookie);
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}
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int
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pdcmatch(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 confargs *ca = aux;
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/* there could be only one */
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if (cf->cf_unit > 0 || strcmp(ca->ca_name, "pdc"))
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return 0;
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return 1;
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}
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void
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pdcattach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct pdc_softc *sc = (struct pdc_softc *)self;
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if (!pdc)
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pdc_init();
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printf("\n");
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callout_init(&sc->sc_to);
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}
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int
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pdcopen(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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int unit = minor(dev);
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struct pdc_softc *sc;
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struct tty *tp;
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int s;
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int error = 0, setuptimeout;
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if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
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return ENXIO;
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s = spltty();
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if (sc->sc_tty)
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tp = sc->sc_tty;
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else
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tty_attach(tp = sc->sc_tty = ttymalloc());
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tp->t_oproc = pdcstart;
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tp->t_param = pdcparam;
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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_CARR_ON;
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ttychars(tp);
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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|CLOCAL;
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tp->t_lflag = TTYDEF_LFLAG;
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tp->t_ispeed = tp->t_ospeed = 9600;
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ttsetwater(tp);
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setuptimeout = 1;
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} else if ((tp->t_state&TS_XCLUDE) && suser(p->p_ucred, &p->p_acflag)) {
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splx(s);
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return EBUSY;
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}
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tp->t_state |= TS_CARR_ON;
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splx(s);
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error = (*tp->t_linesw->l_open)(dev, tp);
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if (error == 0 && setuptimeout)
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pdctimeout(sc);
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return error;
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}
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int
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pdcclose(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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int unit = minor(dev);
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struct tty *tp;
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struct pdc_softc *sc;
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if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
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return ENXIO;
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tp = sc->sc_tty;
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callout_stop(&sc->sc_to);
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(*tp->t_linesw->l_close)(tp, flag);
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ttyclose(tp);
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return 0;
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}
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int
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pdcread(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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int unit = minor(dev);
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struct tty *tp;
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struct pdc_softc *sc;
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if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
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return ENXIO;
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tp = sc->sc_tty;
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return ((*tp->t_linesw->l_read)(tp, uio, flag));
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}
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int
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pdcwrite(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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int unit = minor(dev);
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struct tty *tp;
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struct pdc_softc *sc;
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if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
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return ENXIO;
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tp = sc->sc_tty;
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return ((*tp->t_linesw->l_write)(tp, uio, flag));
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}
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int
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pdcpoll(dev, events, p)
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dev_t dev;
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int events;
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struct proc *p;
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{
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struct pdc_softc *sc = pdc_cd.cd_devs[minor(dev)];
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struct tty *tp = sc->sc_tty;
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return ((*tp->t_linesw->l_poll)(tp, events, p));
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}
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int
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pdcioctl(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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int unit = minor(dev);
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int error;
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struct tty *tp;
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struct pdc_softc *sc;
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if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
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return ENXIO;
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tp = sc->sc_tty;
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error = (*tp->t_linesw->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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int
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pdcparam(tp, t)
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struct tty *tp;
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struct termios *t;
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{
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return 0;
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}
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void
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pdcstart(tp)
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struct tty *tp;
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{
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int s;
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s = spltty();
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if (tp->t_state & (TS_TTSTOP | TS_BUSY)) {
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splx(s);
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return;
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}
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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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tp->t_state |= TS_BUSY;
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while (tp->t_outq.c_cc != 0)
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pdccnputc(tp->t_dev, getc(&tp->t_outq));
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tp->t_state &= ~TS_BUSY;
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splx(s);
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}
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void
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pdcstop(tp, flag)
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struct tty *tp;
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int flag;
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{
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int s;
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s = spltty();
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if (tp->t_state & TS_BUSY)
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if ((tp->t_state & TS_TTSTOP) == 0)
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tp->t_state |= TS_FLUSH;
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splx(s);
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}
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void
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pdctimeout(v)
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void *v;
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{
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struct pdc_softc *sc = v;
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struct tty *tp = sc->sc_tty;
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int c;
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while (pdccnlookc(tp->t_dev, &c)) {
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if (tp->t_state & TS_ISOPEN)
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(*tp->t_linesw->l_rint)(c, tp);
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}
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callout_reset(&sc->sc_to, 1, pdctimeout, sc);
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}
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struct tty *
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pdctty(dev)
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dev_t dev;
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{
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int unit = minor(dev);
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struct pdc_softc *sc;
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if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
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return NULL;
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return sc->sc_tty;
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}
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void
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pdccnprobe(cn)
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struct consdev *cn;
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{
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cn->cn_dev = makedev(22,0);
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cn->cn_pri = CN_NORMAL;
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}
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void
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pdccninit(cn)
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struct consdev *cn;
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{
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#ifdef DEBUG
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printf("pdc0: console init\n");
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#endif
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}
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int
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pdccnlookc(dev, cp)
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dev_t dev;
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int *cp;
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{
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int err, l;
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int s = splhigh();
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int pagezero_cookie = hp700_pagezero_map();
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err = pdc_call(pdc_kbdiodc, 0, pz_kbd->pz_hpa, IODC_IO_CONSIN,
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pz_kbd->pz_spa, pz_kbd->pz_layers, pdcret, 0, pdc_consbuf, 1, 0);
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l = pdcret[0];
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*cp = pdc_consbuf[0];
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hp700_pagezero_unmap(pagezero_cookie);
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splx(s);
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#ifdef DEBUG
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if (err < 0)
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printf("pdccnlookc: input error: %d\n", err);
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#endif
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return l;
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}
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int
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pdccngetc(dev)
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dev_t dev;
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{
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int c;
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if (!pdc)
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return 0;
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while(!pdccnlookc(dev, &c))
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;
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return (c);
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}
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void
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pdccnputc(dev, c)
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dev_t dev;
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int c;
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{
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register int err;
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int s = splhigh();
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int pagezero_cookie = hp700_pagezero_map();
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*pdc_consbuf = c;
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err = pdc_call(pdc_cniodc, 0, pz_cons->pz_hpa, IODC_IO_CONSOUT,
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pz_cons->pz_spa, pz_cons->pz_layers, pdcret, 0, pdc_consbuf, 1, 0);
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hp700_pagezero_unmap(pagezero_cookie);
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splx(s);
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if (err < 0) {
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#if defined(DDB) || defined(KGDB)
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__asm __volatile ("break %0, %1"
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:: "i" (HPPA_BREAK_KERNEL), "i" (HPPA_BREAK_KGDB));
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#endif /* DDB || KGDB */
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delay(250000);
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#if 0
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/*
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* It's not a good idea to use the output to print
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* an output error.
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*/
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printf("pdccnputc: output error: %d\n", err);
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#endif
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}
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}
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void
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pdccnpollc(dev, on)
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dev_t dev;
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int on;
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{
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}
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