NetBSD-5.0.2/sys/arch/hp700/dev/pdc.c
/* $NetBSD: pdc.c,v 1.25 2008/06/14 21:27:37 mjf Exp $ */
/* $OpenBSD: pdc.c,v 1.14 2001/04/29 21:05:43 mickey Exp $ */
/*
* Copyright (c) 1998-2001 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pdc.c,v 1.25 2008/06/14 21:27:37 mjf Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/tty.h>
#include <sys/user.h>
#include <sys/callout.h>
#include <sys/conf.h>
#include <sys/kauth.h>
#include <dev/cons.h>
#include <dev/clock_subr.h>
#include <machine/pdc.h>
#include <machine/iomod.h>
#include <machine/autoconf.h>
#include <hp700/hp700/machdep.h>
typedef
struct pdc_softc {
struct device sc_dv;
struct tty *sc_tty;
struct callout 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(struct device *, struct cfdata *, void *);
void pdcattach(struct device *, struct device *, void *);
CFATTACH_DECL(pdc, sizeof(pdcsoftc_t),
pdcmatch, pdcattach, NULL, NULL);
extern struct cfdriver pdc_cd;
static int pdc_attached;
dev_type_open(pdcopen);
dev_type_close(pdcclose);
dev_type_read(pdcread);
dev_type_write(pdcwrite);
dev_type_ioctl(pdcioctl);
dev_type_stop(pdcstop);
dev_type_tty(pdctty);
dev_type_poll(pdcpoll);
const struct cdevsw pdc_cdevsw = {
pdcopen, pdcclose, pdcread, pdcwrite, pdcioctl,
pdcstop, pdctty, pdcpoll, nommap, ttykqfilter, D_TTY
};
void pdcstart(struct tty *);
void pdctimeout(void *);
int pdcparam(struct tty *, struct termios *);
int pdccnlookc(dev_t, int *);
static struct cnm_state pdc_cnm_state;
static int pdcgettod(todr_chip_handle_t, volatile struct timeval *);
static int pdcsettod(todr_chip_handle_t, volatile struct timeval *);
static struct pdc_tod tod PDC_ALIGNMENT;
void
pdc_init(void)
{
static struct todr_chip_handle todr = {
.todr_settime = pdcsettod,
.todr_gettime = pdcgettod,
};
static int kbd_iodc[IODC_MAXSIZE/sizeof(int)];
static int cn_iodc[IODC_MAXSIZE/sizeof(int)];
int err;
int pagezero_cookie;
pagezero_cookie = hp700_pagezero_map();
/* 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 */
cn_init_magic(&pdc_cnm_state);
cn_set_magic("+++++");
hp700_pagezero_unmap(pagezero_cookie);
/* attach the TOD clock */
todr_attach(&todr);
}
int
pdcmatch(struct device *parent, struct cfdata *cf, void *aux)
{
struct confargs *ca = aux;
/* there could be only one */
if (pdc_attached || strcmp(ca->ca_name, "pdc"))
return 0;
return 1;
}
void
pdcattach(struct device *parent, struct device *self, void *aux)
{
struct pdc_softc *sc = (struct pdc_softc *)self;
pdc_attached = 1;
if (!pdc)
pdc_init();
printf("\n");
callout_init(&sc->sc_to, 0);
}
int
pdcopen(dev_t dev, int flag, int mode, struct lwp *l)
{
struct pdc_softc *sc;
struct tty *tp;
int s;
int error = 0, setuptimeout;
sc = device_lookup_private(&pdc_cd, minor(dev));
if (sc == 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 (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) {
splx(s);
return (EBUSY);
}
if ((tp->t_state & TS_ISOPEN) == 0) {
tp->t_state |= 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
setuptimeout = 0;
tp->t_state |= TS_CARR_ON;
splx(s);
error = (*tp->t_linesw->l_open)(dev, tp);
if (error == 0 && setuptimeout)
pdctimeout(sc);
return error;
}
int
pdcclose(dev_t dev, int flag, int mode, struct lwp *l)
{
struct tty *tp;
struct pdc_softc *sc;
sc = device_lookup_private(&pdc_cd, minor(dev));
if (sc == NULL)
return ENXIO;
tp = sc->sc_tty;
callout_stop(&sc->sc_to);
(*tp->t_linesw->l_close)(tp, flag);
ttyclose(tp);
return 0;
}
int
pdcread(dev_t dev, struct uio *uio, int flag)
{
struct tty *tp;
struct pdc_softc *sc;
sc = device_lookup_private(&pdc_cd, minor(dev));
if (sc == NULL)
return ENXIO;
tp = sc->sc_tty;
return ((*tp->t_linesw->l_read)(tp, uio, flag));
}
int
pdcwrite(dev_t dev, struct uio *uio, int flag)
{
struct tty *tp;
struct pdc_softc *sc;
sc = device_lookup_private(&pdc_cd, minor(dev));
if (sc == NULL)
return ENXIO;
tp = sc->sc_tty;
return ((*tp->t_linesw->l_write)(tp, uio, flag));
}
int
pdcpoll(dev_t dev, int events, struct lwp *l)
{
struct pdc_softc *sc = device_lookup_private(&pdc_cd,minor(dev));
struct tty *tp = sc->sc_tty;
return ((*tp->t_linesw->l_poll)(tp, events, l));
}
int
pdcioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
{
int error;
struct tty *tp;
struct pdc_softc *sc;
sc = device_lookup_private(&pdc_cd, minor(dev));
if (sc == NULL)
return ENXIO;
tp = sc->sc_tty;
error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l);
if (error >= 0)
return error;
error = ttioctl(tp, cmd, data, flag, l);
if (error >= 0)
return error;
return ENOTTY;
}
int
pdcparam(struct tty *tp, struct termios *t)
{
return 0;
}
void
pdcstart(struct tty *tp)
{
int s;
s = spltty();
if (tp->t_state & (TS_TTSTOP | TS_BUSY)) {
splx(s);
return;
}
ttypull(tp);
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);
}
void
pdcstop(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);
}
void
pdctimeout(void *v)
{
struct pdc_softc *sc = v;
struct tty *tp = sc->sc_tty;
int c;
while (pdccnlookc(tp->t_dev, &c)) {
cn_check_magic(tp->t_dev, c, pdc_cnm_state);
if (tp->t_state & TS_ISOPEN)
(*tp->t_linesw->l_rint)(c, tp);
}
callout_reset(&sc->sc_to, 1, pdctimeout, sc);
}
struct tty *
pdctty(dev_t dev)
{
struct pdc_softc *sc;
sc = device_lookup_private(&pdc_cd, minor(dev));
if (sc == NULL)
return NULL;
return sc->sc_tty;
}
void
pdccnprobe(struct consdev *cn)
{
cn->cn_dev = makedev(22,0);
cn->cn_pri = CN_NORMAL;
}
void
pdccninit(struct consdev *cn)
{
#ifdef DEBUG
printf("pdc0: console init\n");
#endif
}
int
pdccnlookc(dev_t dev, int *cp)
{
int s, err, l, pagezero_cookie;
s = splhigh();
pagezero_cookie = hp700_pagezero_map();
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];
hp700_pagezero_unmap(pagezero_cookie);
splx(s);
#ifdef DEBUG
if (err < 0)
printf("pdccnlookc: input error: %d\n", err);
#endif
return l;
}
int
pdccngetc(dev_t dev)
{
int c;
if (!pdc)
return 0;
while (!pdccnlookc(dev, &c))
;
return (c);
}
void
pdccnputc(dev_t dev, int c)
{
int s, err, pagezero_cookie;
s = splhigh();
pagezero_cookie = hp700_pagezero_map();
*pdc_consbuf = c;
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);
hp700_pagezero_unmap(pagezero_cookie);
splx(s);
if (err < 0) {
#if defined(DDB) || defined(KGDB)
__asm volatile ("break %0, %1"
:: "i" (HPPA_BREAK_KERNEL), "i" (HPPA_BREAK_KGDB));
#endif /* DDB || KGDB */
delay(250000);
#if 0
/*
* It's not a good idea to use the output to print
* an output error.
*/
printf("pdccnputc: output error: %d\n", err);
#endif
}
}
void
pdccnpollc(dev_t dev, int on)
{
}
static int
pdcgettod(todr_chip_handle_t tch, volatile struct timeval *tvp)
{
int pagezero_cookie;
pagezero_cookie = hp700_pagezero_map();
pdc_call((iodcio_t)PAGE0->mem_pdc, 1, PDC_TOD, PDC_TOD_READ,
&tod, 0, 0, 0, 0, 0);
hp700_pagezero_unmap(pagezero_cookie);
tvp->tv_sec = tod.sec;
tvp->tv_usec = tod.usec;
return 0;
}
static int
pdcsettod(todr_chip_handle_t tch, volatile struct timeval *tvp)
{
int pagezero_cookie;
tod.sec = tvp->tv_sec;
tod.usec = tvp->tv_usec;
pagezero_cookie = hp700_pagezero_map();
pdc_call((iodcio_t)PAGE0->mem_pdc, 1, PDC_TOD, PDC_TOD_WRITE, &tod);
hp700_pagezero_unmap(pagezero_cookie);
return 0;
}