230 lines
6.7 KiB
C
230 lines
6.7 KiB
C
/* $NetBSD: mk48txx.c,v 1.28 2020/01/01 19:24:03 thorpej Exp $ */
|
|
/*-
|
|
* Copyright (c) 2000 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Paul Kranenburg.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 FOUNDATION OR CONTRIBUTORS
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Mostek MK48T02, MK48T08, MK48T59 time-of-day chip subroutines.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: mk48txx.c,v 1.28 2020/01/01 19:24:03 thorpej Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
#include <sys/errno.h>
|
|
|
|
#include <sys/bus.h>
|
|
#include <dev/clock_subr.h>
|
|
#include <dev/ic/mk48txxreg.h>
|
|
#include <dev/ic/mk48txxvar.h>
|
|
|
|
int mk48txx_gettime_ymdhms(todr_chip_handle_t, struct clock_ymdhms *);
|
|
int mk48txx_settime_ymdhms(todr_chip_handle_t, struct clock_ymdhms *);
|
|
uint8_t mk48txx_def_nvrd(struct mk48txx_softc *, int);
|
|
void mk48txx_def_nvwr(struct mk48txx_softc *, int, uint8_t);
|
|
|
|
const struct {
|
|
const char *name;
|
|
bus_size_t nvramsz;
|
|
bus_size_t clkoff;
|
|
int flags;
|
|
#define MK48TXX_EXT_REGISTERS 1 /* Has extended register set */
|
|
} mk48txx_models[] = {
|
|
{ "mk48t02", MK48T02_CLKSZ, MK48T02_CLKOFF, 0 },
|
|
{ "mk48t08", MK48T08_CLKSZ, MK48T08_CLKOFF, 0 },
|
|
{ "mk48t18", MK48T18_CLKSZ, MK48T18_CLKOFF, 0 },
|
|
{ "mk48t59", MK48T59_CLKSZ, MK48T59_CLKOFF, MK48TXX_EXT_REGISTERS },
|
|
{ "ds1553", DS1553_CLKSZ, DS1553_CLKOFF, MK48TXX_EXT_REGISTERS },
|
|
};
|
|
|
|
void
|
|
mk48txx_attach(struct mk48txx_softc *sc)
|
|
{
|
|
todr_chip_handle_t handle;
|
|
int i;
|
|
|
|
aprint_normal(": %s", sc->sc_model);
|
|
|
|
i = __arraycount(mk48txx_models);
|
|
while (--i >= 0) {
|
|
if (strcmp(sc->sc_model, mk48txx_models[i].name) == 0)
|
|
break;
|
|
}
|
|
if (i < 0)
|
|
panic("%s: unsupported model", __func__);
|
|
|
|
sc->sc_nvramsz = mk48txx_models[i].nvramsz;
|
|
sc->sc_clkoffset = mk48txx_models[i].clkoff;
|
|
|
|
handle = &sc->sc_handle;
|
|
handle->cookie = sc;
|
|
handle->todr_gettime = NULL;
|
|
handle->todr_settime = NULL;
|
|
handle->todr_gettime_ymdhms = mk48txx_gettime_ymdhms;
|
|
handle->todr_settime_ymdhms = mk48txx_settime_ymdhms;
|
|
|
|
if (sc->sc_nvrd == NULL)
|
|
sc->sc_nvrd = mk48txx_def_nvrd;
|
|
if (sc->sc_nvwr == NULL)
|
|
sc->sc_nvwr = mk48txx_def_nvwr;
|
|
|
|
todr_attach(handle);
|
|
}
|
|
|
|
/*
|
|
* Get time-of-day and convert to a `struct timeval'
|
|
* Return 0 on success; an error number otherwise.
|
|
*/
|
|
int
|
|
mk48txx_gettime_ymdhms(todr_chip_handle_t handle, struct clock_ymdhms *dt)
|
|
{
|
|
struct mk48txx_softc *sc;
|
|
bus_size_t clkoff;
|
|
int year;
|
|
uint8_t csr;
|
|
|
|
sc = handle->cookie;
|
|
clkoff = sc->sc_clkoffset;
|
|
|
|
/* enable read (stop time) */
|
|
csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR);
|
|
csr |= MK48TXX_CSR_READ;
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr);
|
|
|
|
dt->dt_sec = bcdtobin((*sc->sc_nvrd)(sc, clkoff + MK48TXX_ISEC));
|
|
dt->dt_min = bcdtobin((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IMIN));
|
|
dt->dt_hour = bcdtobin((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IHOUR));
|
|
dt->dt_day = bcdtobin((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IDAY));
|
|
dt->dt_wday = bcdtobin((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IWDAY));
|
|
dt->dt_mon = bcdtobin((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IMON));
|
|
year = bcdtobin((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IYEAR));
|
|
|
|
if (sc->sc_flag & MK48TXX_HAVE_CENT_REG) {
|
|
year += 100*bcdtobin(csr & MK48TXX_CSR_CENT_MASK);
|
|
} else {
|
|
year += sc->sc_year0;
|
|
if (year < POSIX_BASE_YEAR &&
|
|
(sc->sc_flag & MK48TXX_NO_CENT_ADJUST) == 0)
|
|
year += 100;
|
|
}
|
|
|
|
dt->dt_year = year;
|
|
|
|
/* time wears on */
|
|
csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR);
|
|
csr &= ~MK48TXX_CSR_READ;
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Set the time-of-day clock based on the value of the `struct timeval' arg.
|
|
* Return 0 on success; an error number otherwise.
|
|
*/
|
|
int
|
|
mk48txx_settime_ymdhms(todr_chip_handle_t handle, struct clock_ymdhms *dt)
|
|
{
|
|
struct mk48txx_softc *sc;
|
|
bus_size_t clkoff;
|
|
uint8_t csr;
|
|
int year;
|
|
int cent;
|
|
|
|
sc = handle->cookie;
|
|
clkoff = sc->sc_clkoffset;
|
|
|
|
if ((sc->sc_flag & MK48TXX_HAVE_CENT_REG) == 0) {
|
|
cent = 0;
|
|
year = dt->dt_year - sc->sc_year0;
|
|
if (year > 99 &&
|
|
(sc->sc_flag & MK48TXX_NO_CENT_ADJUST) == 0)
|
|
year -= 100;
|
|
} else {
|
|
cent = dt->dt_year / 100;
|
|
year = dt->dt_year % 100;
|
|
}
|
|
|
|
/* enable write */
|
|
csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR);
|
|
csr |= MK48TXX_CSR_WRITE;
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr);
|
|
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ISEC, bintobcd(dt->dt_sec));
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IMIN, bintobcd(dt->dt_min));
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IHOUR, bintobcd(dt->dt_hour));
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IWDAY, bintobcd(dt->dt_wday));
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IDAY, bintobcd(dt->dt_day));
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IMON, bintobcd(dt->dt_mon));
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IYEAR, bintobcd(year));
|
|
|
|
/*
|
|
* If we have a century register and the century has changed
|
|
* update it.
|
|
*/
|
|
if ((sc->sc_flag & MK48TXX_HAVE_CENT_REG)
|
|
&& (csr & MK48TXX_CSR_CENT_MASK) != bintobcd(cent)) {
|
|
csr &= ~MK48TXX_CSR_CENT_MASK;
|
|
csr |= MK48TXX_CSR_CENT_MASK & bintobcd(cent);
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr);
|
|
}
|
|
|
|
/* load them up */
|
|
csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR);
|
|
csr &= ~MK48TXX_CSR_WRITE;
|
|
(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
mk48txx_get_nvram_size(todr_chip_handle_t handle, bus_size_t *vp)
|
|
{
|
|
struct mk48txx_softc *sc;
|
|
|
|
sc = handle->cookie;
|
|
*vp = sc->sc_nvramsz;
|
|
return 0;
|
|
}
|
|
|
|
uint8_t
|
|
mk48txx_def_nvrd(struct mk48txx_softc *sc, int off)
|
|
{
|
|
|
|
return bus_space_read_1(sc->sc_bst, sc->sc_bsh, off);
|
|
}
|
|
|
|
void
|
|
mk48txx_def_nvwr(struct mk48txx_softc *sc, int off, uint8_t v)
|
|
{
|
|
|
|
bus_space_write_1(sc->sc_bst, sc->sc_bsh, off, v);
|
|
}
|