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/* $OpenBSD: drbbc.c,v 1.1 1997/09/18 13:39:44 niklas Exp $ */
/* $NetBSD: drbbc.c,v 1.1 1997/07/17 23:29:30 is Exp $ */
/*
* Copyright (c) 1997 Ignatios Souvatzis.
* 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 Ignatios Souvatzis
* for the NetBSD project.
* 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 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/kernel.h>
#include <sys/device.h>
#include <sys/systm.h>
#if 0
#include <machine/psl.h>
#endif
#include <machine/cpu.h>
#include <amiga/amiga/device.h>
#include <amiga/amiga/custom.h>
#include <amiga/amiga/cia.h>
#include <amiga/amiga/drcustom.h>
#include <amiga/dev/rtc.h>
#include <dev/ic/ds.h>
int draco_ds_read_bit __P((void *));
void draco_ds_write_bit __P((void *, int));
void draco_ds_reset __P((void *));
void drbbc_attach __P((struct device *, struct device *, void *));
int drbbc_match __P((struct device *, void *, void *));
time_t dracogettod __P((void));
#ifdef __NOTYET__
int dracosettod __P((time_t));
#endif
struct drbbc_softc {
struct device sc_dev;
struct ds_handle sc_dsh;
};
struct cfattach drbbc_ca = {
sizeof(struct drbbc_softc),
drbbc_match,
drbbc_attach
};
struct cfdriver drbbc_cd = {
NULL, "drbbc", DV_DULL, NULL, 0
};
struct drbbc_softc *drbbc_sc;
int
drbbc_match(pdp, match, auxp)
struct device *pdp;
void *match;
void *auxp;
{
struct cfdata *cfp = match;
if (is_draco() && matchname(auxp, "drbbc") && (cfp->cf_unit == 0))
return (1);
else
return (0);
}
void
drbbc_attach(pdp, dp, auxp)
struct device *pdp, *dp;
void *auxp;
{
int i;
struct drbbc_softc *sc;
u_int8_t rombuf[8];
sc = (struct drbbc_softc *)dp;
sc->sc_dsh.ds_read_bit = draco_ds_read_bit;
sc->sc_dsh.ds_write_bit = draco_ds_write_bit;
sc->sc_dsh.ds_reset = draco_ds_reset;
sc->sc_dsh.ds_hw_handle = (void *)(DRCCADDR + DRIOCTLPG*NBPG);
sc->sc_dsh.ds_reset(sc->sc_dsh.ds_hw_handle);
ds_write_byte(&sc->sc_dsh, DS_ROM_READ);
for (i=0; i<8; ++i)
rombuf[i] = ds_read_byte(&sc->sc_dsh);
hostid = (rombuf[3] << 24) + (rombuf[2] << 16) +
(rombuf[1] << 8) + rombuf[7];
printf(": ROM %02x %02x%02x%02x%02x%02x%02x %02x (DraCo sernum %ld)\n",
rombuf[7], rombuf[6], rombuf[5], rombuf[4],
rombuf[3], rombuf[2], rombuf[1], rombuf[0],
hostid);
gettod = dracogettod;
settod = (void *)0;
drbbc_sc = sc;
}
int
draco_ds_read_bit(p)
void *p;
{
struct drioct *draco_ioct;
draco_ioct = p;
while (draco_ioct->io_status & DRSTAT_CLKBUSY);
draco_ioct->io_clockw1 = 0;
while (draco_ioct->io_status & DRSTAT_CLKBUSY);
return (draco_ioct->io_status & DRSTAT_CLKDAT);
}
void
draco_ds_write_bit(p, b)
void *p;
int b;
{
struct drioct *draco_ioct;
draco_ioct = p;
while (draco_ioct->io_status & DRSTAT_CLKBUSY);
if (b)
draco_ioct->io_clockw1 = 0;
else
draco_ioct->io_clockw0 = 0;
}
void
draco_ds_reset(p)
void *p;
{
struct drioct *draco_ioct;
draco_ioct = p;
draco_ioct->io_clockrst = 0;
}
/*
* We could return 1/256 of a seconds, but would need to change the interface
*/
time_t
dracogettod()
{
u_int32_t clkbuf;
drbbc_sc->sc_dsh.ds_reset(drbbc_sc->sc_dsh.ds_hw_handle);
ds_write_byte(&drbbc_sc->sc_dsh, DS_ROM_SKIP);
ds_write_byte(&drbbc_sc->sc_dsh, DS_MEM_READ_MEMORY);
/* address of full seconds: */
ds_write_byte(&drbbc_sc->sc_dsh, 0x03);
ds_write_byte(&drbbc_sc->sc_dsh, 0x02);
clkbuf = ds_read_byte(&drbbc_sc->sc_dsh)
+ (ds_read_byte(&drbbc_sc->sc_dsh)<<8)
+ (ds_read_byte(&drbbc_sc->sc_dsh)<<16)
+ (ds_read_byte(&drbbc_sc->sc_dsh)<<24);
/* BSD time is wr. 1.1.1970; AmigaOS time wrt. 1.1.1978 */
clkbuf += (8*365 + 2) * 86400;
return ((time_t)clkbuf);
}
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