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/* $OpenBSD: pdc.c,v 1.12 2000/03/23 20:14:08 mickey Exp $ */
/*
* Copyright (c) 1998-2000 Michael Shalayeff
* All rights reserved.
*
* 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 Michael Shalayeff.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 MIND,
* 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/tty.h>
#include <sys/user.h>
#include <sys/timeout.h>
#include <dev/cons.h>
#include <machine/conf.h>
#include <machine/pdc.h>
#include <machine/iomod.h>
#include <machine/autoconf.h>
typedef
struct pdc_softc {
struct device sc_dv;
struct tty *sc_tty;
struct timeout sc_to;
} pdcsoftc_t;
pdcio_t pdc;
int pdcret[32] PDC_ALIGNMENT;
char pdc_consbuf[IODC_MINIOSIZ] PDC_ALIGNMENT;
iodcio_t pdc_cniodc, pdc_kbdiodc;
pz_device_t *pz_kbd, *pz_cons;
int CONADDR;
int pdcmatch __P((struct device *, void *, void*));
void pdcattach __P((struct device *, struct device *, void *));
struct cfattach pdc_ca = {
sizeof(pdcsoftc_t), pdcmatch, pdcattach
};
struct cfdriver pdc_cd = {
NULL, "pdc", DV_DULL
};
void pdcstart __P((struct tty *tp));
void pdctimeout __P((void *v));
int pdcparam __P((struct tty *tp, struct termios *));
int pdccnlookc __P((dev_t dev, char *cp));
void
pdc_init()
{
static int kbd_iodc[IODC_MAXSIZE/sizeof(int)];
static int cn_iodc[IODC_MAXSIZE/sizeof(int)];
int err;
/* XXX locore've done it XXX pdc = (pdcio_t)PAGE0->mem_pdc; */
pz_kbd = &PAGE0->mem_kbd;
pz_cons = &PAGE0->mem_cons;
/* XXX should we reset the console/kbd here?
well, /boot did that for us anyway */
if ((err = pdc_call((iodcio_t)pdc, 0, PDC_IODC, PDC_IODC_READ,
pdcret, pz_cons->pz_hpa,
IODC_IO, cn_iodc, IODC_MAXSIZE)) < 0 ||
(err = pdc_call((iodcio_t)pdc, 0, PDC_IODC, PDC_IODC_READ,
pdcret, pz_kbd->pz_hpa,
IODC_IO, kbd_iodc, IODC_MAXSIZE)) < 0) {
#ifdef DEBUG
printf("pdc_init: failed reading IODC (%d)\n", err);
#endif
}
pdc_cniodc = (iodcio_t)cn_iodc;
pdc_kbdiodc = (iodcio_t)kbd_iodc;
/* XXX make pdc current console */
cn_tab = &constab[0];
/* TODO: detect that we are on cereal, and set CONADDR */
}
int
pdcmatch(parent, cfdata, aux)
struct device *parent;
void *cfdata;
void *aux;
{
struct cfdata *cf = cfdata;
struct confargs *ca = aux;
/* there could be only one */
if (cf->cf_unit > 0 && !strcmp(ca->ca_name, "pdc"))
return 0;
return 1;
}
void
pdcattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct pdc_softc *sc = (struct pdc_softc *)self;
if (!pdc)
pdc_init();
printf("\n");
timeout_set(&sc->sc_to, pdctimeout, sc);
}
int
pdcopen(dev, flag, mode, p)
dev_t dev;
int flag, mode;
struct proc *p;
{
int unit = minor(dev);
struct pdc_softc *sc;
struct tty *tp;
int s;
int error = 0, setuptimeout;
if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
return ENXIO;
s = spltty();
if (!sc->sc_tty)
tp = sc->sc_tty;
else
tty_attach(tp = sc->sc_tty = ttymalloc());
tp->t_oproc = pdcstart;
tp->t_param = pdcparam;
tp->t_dev = dev;
if ((tp->t_state & TS_ISOPEN) == 0) {
tp->t_state |= TS_WOPEN|TS_CARR_ON;
ttychars(tp);
tp->t_iflag = TTYDEF_IFLAG;
tp->t_oflag = TTYDEF_OFLAG;
tp->t_cflag = TTYDEF_CFLAG|CLOCAL;
tp->t_lflag = TTYDEF_LFLAG;
tp->t_ispeed = tp->t_ospeed = 9600;
ttsetwater(tp);
setuptimeout = 1;
} else if (tp->t_state&TS_XCLUDE && p->p_ucred->cr_uid != 0) {
splx(s);
return EBUSY;
}
splx(s);
error = (*linesw[tp->t_line].l_open)(dev, tp);
if (error == 0 && setuptimeout)
pdctimeout(sc);
return error;
}
int
pdcclose(dev, flag, mode, p)
dev_t dev;
int flag, mode;
struct proc *p;
{
int unit = minor(dev);
struct tty *tp;
struct pdc_softc *sc;
if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
return ENXIO;
tp = sc->sc_tty;
timeout_del(&sc->sc_to);
(*linesw[tp->t_line].l_close)(tp, flag);
ttyclose(tp);
return 0;
}
int
pdcread(dev, uio, flag)
dev_t dev;
struct uio *uio;
int flag;
{
int unit = minor(dev);
struct tty *tp;
struct pdc_softc *sc;
if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
return ENXIO;
tp = sc->sc_tty;
return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
}
int
pdcwrite(dev, uio, flag)
dev_t dev;
struct uio *uio;
int flag;
{
int unit = minor(dev);
struct tty *tp;
struct pdc_softc *sc;
if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
return ENXIO;
tp = sc->sc_tty;
return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
}
int
pdcioctl(dev, cmd, data, flag, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
int unit = minor(dev);
int error;
struct tty *tp;
struct pdc_softc *sc;
if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
return ENXIO;
tp = sc->sc_tty;
error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
if (error >= 0)
return error;
error = ttioctl(tp, cmd, data, flag, p);
if (error >= 0)
return error;
return ENOTTY;
}
int
pdcparam(tp, t)
struct tty *tp;
struct termios *t;
{
return 0;
}
void
pdcstart(tp)
struct tty *tp;
{
int s;
s = spltty();
if (tp->t_state & (TS_TTSTOP | TS_BUSY)) {
splx(s);
return;
}
if (tp->t_outq.c_cc <= tp->t_lowat) {
if (tp->t_state & TS_ASLEEP) {
tp->t_state &= ~TS_ASLEEP;
wakeup((caddr_t)&tp->t_outq);
}
selwakeup(&tp->t_wsel);
}
tp->t_state |= TS_BUSY;
while (tp->t_outq.c_cc != 0)
pdccnputc(tp->t_dev, getc(&tp->t_outq));
tp->t_state &= ~TS_BUSY;
splx(s);
}
int
pdcstop(tp, flag)
struct tty *tp;
int flag;
{
int s;
s = spltty();
if (tp->t_state & TS_BUSY)
if ((tp->t_state & TS_TTSTOP) == 0)
tp->t_state |= TS_FLUSH;
splx(s);
return 0;
}
void
pdctimeout(v)
void *v;
{
struct pdc_softc *sc = v;
struct tty *tp = sc->sc_tty;
u_char c;
while (pdccnlookc(tp->t_dev, &c)) {
if (tp->t_state & TS_ISOPEN)
(*linesw[tp->t_line].l_rint)(c, tp);
}
timeout_add(&sc->sc_to, 1);
}
struct tty *
pdctty(dev)
dev_t dev;
{
int unit = minor(dev);
struct pdc_softc *sc;
if (unit >= pdc_cd.cd_ndevs || (sc = pdc_cd.cd_devs[unit]) == NULL)
return NULL;
return sc->sc_tty;
}
void
pdccnprobe(cn)
struct consdev *cn;
{
cn->cn_dev = makedev(22,0);
cn->cn_pri = CN_NORMAL;
}
void
pdccninit(cn)
struct consdev *cn;
{
#ifdef DEBUG
printf("pdc0: console init\n");
#endif
}
int
pdccnlookc(dev, cp)
dev_t dev;
char *cp;
{
int err, l;
err = pdc_call(pdc_kbdiodc, 0, pz_kbd->pz_hpa, IODC_IO_CONSIN,
pz_kbd->pz_spa, pz_kbd->pz_layers, pdcret, 0,
pdc_consbuf, 1, 0);
l = pdcret[0];
*cp = pdc_consbuf[0];
#ifdef DEBUG
if (err < 0)
printf("pdccnlookc: input error: %d\n", err);
#endif
return l;
}
int
pdccngetc(dev)
dev_t dev;
{
char c;
if (!pdc)
return 0;
while(!pdccnlookc(dev, &c))
;
return (c);
}
void
pdccnputc(dev, c)
dev_t dev;
int c;
{
register int err;
*pdc_consbuf = c;
if ((err = pdc_call(pdc_cniodc, 0, pz_cons->pz_hpa, IODC_IO_CONSOUT,
pz_cons->pz_spa, pz_cons->pz_layers,
pdcret, 0, pdc_consbuf, 1, 0)) < 0) {
#ifdef DEBUG
printf("pdccnputc: output error: %d\n", err);
#endif
}
}
void
pdccnpollc(dev, on)
dev_t dev;
int on;
{
}
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