aafdb08c5a
-Wcast-qual differently, by instead changing the signatore of those "functions" to take a "volatile struct timeval*" instead of a "struct timeval*". Many places, these functions are called with &time, and time is declared as volatile in <sys/kernel.h>. This way we can get rid of all the ugly casts which now also triggered warnings, and caused more code to be added to work around the problem. Reviewed by thorpej.
212 lines
6.5 KiB
C
212 lines
6.5 KiB
C
/* $NetBSD: intersil7170.c,v 1.4 2005/06/04 20:14:25 he 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Intersil 7170 time-of-day chip subroutines.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: intersil7170.c,v 1.4 2005/06/04 20:14:25 he Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/errno.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <dev/clock_subr.h>
|
|
#include <dev/ic/intersil7170.h>
|
|
|
|
#define intersil_command(run, interrupt) \
|
|
(run | interrupt | INTERSIL_CMD_FREQ_32K | INTERSIL_CMD_24HR_MODE | \
|
|
INTERSIL_CMD_NORMAL_MODE)
|
|
|
|
struct intersil7170_softc {
|
|
bus_space_tag_t sil_bt;
|
|
bus_space_handle_t sil_bh;
|
|
int sil_year0;
|
|
};
|
|
|
|
int intersil7170_gettime(todr_chip_handle_t, volatile struct timeval *);
|
|
int intersil7170_settime(todr_chip_handle_t, volatile struct timeval *);
|
|
int intersil7170_getcal(todr_chip_handle_t, int *);
|
|
int intersil7170_setcal(todr_chip_handle_t, int);
|
|
|
|
int intersil7170_auto_century_adjust = 1;
|
|
|
|
todr_chip_handle_t
|
|
intersil7170_attach(bt, bh, year0)
|
|
bus_space_tag_t bt;
|
|
bus_space_handle_t bh;
|
|
int year0;
|
|
{
|
|
todr_chip_handle_t handle;
|
|
struct intersil7170_softc *sil;
|
|
int sz;
|
|
|
|
printf(": intersil7170");
|
|
|
|
sz = ALIGN(sizeof(struct todr_chip_handle)) + sizeof(struct intersil7170);
|
|
handle = malloc(sz, M_DEVBUF, M_NOWAIT);
|
|
sil = (struct intersil7170_softc *)((u_long)handle +
|
|
ALIGN(sizeof(struct todr_chip_handle)));
|
|
handle->cookie = sil;
|
|
handle->todr_gettime = intersil7170_gettime;
|
|
handle->todr_settime = intersil7170_settime;
|
|
handle->todr_getcal = intersil7170_getcal;
|
|
handle->todr_setcal = intersil7170_setcal;
|
|
sil->sil_bt = bt;
|
|
sil->sil_bh = bh;
|
|
sil->sil_year0 = year0;
|
|
|
|
return (handle);
|
|
}
|
|
|
|
/*
|
|
* Set up the system's time, given a `reasonable' time value.
|
|
*/
|
|
int
|
|
intersil7170_gettime(handle, tv)
|
|
todr_chip_handle_t handle;
|
|
volatile struct timeval *tv;
|
|
{
|
|
struct intersil7170_softc *sil = handle->cookie;
|
|
bus_space_tag_t bt = sil->sil_bt;
|
|
bus_space_handle_t bh = sil->sil_bh;
|
|
struct clock_ymdhms dt;
|
|
u_int8_t cmd;
|
|
int year;
|
|
int s;
|
|
|
|
/* No interrupts while we're fiddling with the chip */
|
|
s = splhigh();
|
|
|
|
/* Enable read (stop time) */
|
|
cmd = intersil_command(INTERSIL_CMD_STOP, INTERSIL_CMD_IENABLE);
|
|
bus_space_write_1(bt, bh, INTERSIL_ICMD, cmd);
|
|
|
|
/* The order of reading out the clock elements is important */
|
|
bus_space_read_1(bt, bh, INTERSIL_ICSEC); /* not used */
|
|
dt.dt_hour = bus_space_read_1(bt, bh, INTERSIL_IHOUR);
|
|
dt.dt_min = bus_space_read_1(bt, bh, INTERSIL_IMIN);
|
|
dt.dt_sec = bus_space_read_1(bt, bh, INTERSIL_ISEC);
|
|
dt.dt_mon = bus_space_read_1(bt, bh, INTERSIL_IMON);
|
|
dt.dt_day = bus_space_read_1(bt, bh, INTERSIL_IDAY);
|
|
year = bus_space_read_1(bt, bh, INTERSIL_IYEAR);
|
|
dt.dt_wday = bus_space_read_1(bt, bh, INTERSIL_IDOW);
|
|
|
|
/* Done writing (time wears on) */
|
|
cmd = intersil_command(INTERSIL_CMD_RUN, INTERSIL_CMD_IENABLE);
|
|
bus_space_write_1(bt, bh, INTERSIL_ICMD, cmd);
|
|
splx(s);
|
|
|
|
year += sil->sil_year0;
|
|
if (year < 1970 && intersil7170_auto_century_adjust != 0)
|
|
year += 100;
|
|
|
|
dt.dt_year = year;
|
|
|
|
tv->tv_sec = clock_ymdhms_to_secs(&dt);
|
|
tv->tv_usec = 0;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Reset the clock based on the current time.
|
|
*/
|
|
int
|
|
intersil7170_settime(handle, tv)
|
|
todr_chip_handle_t handle;
|
|
volatile struct timeval *tv;
|
|
{
|
|
struct intersil7170_softc *sil = handle->cookie;
|
|
bus_space_tag_t bt = sil->sil_bt;
|
|
bus_space_handle_t bh = sil->sil_bh;
|
|
struct clock_ymdhms dt;
|
|
u_int8_t cmd;
|
|
int year;
|
|
long sec;
|
|
int s;
|
|
|
|
sec = tv->tv_sec + ((tv->tv_usec < 500000) ? 0 : 1);
|
|
clock_secs_to_ymdhms(sec, &dt);
|
|
|
|
year = dt.dt_year - sil->sil_year0;
|
|
if (year > 99 && intersil7170_auto_century_adjust != 0)
|
|
year -= 100;
|
|
|
|
/* No interrupts while we're fiddling with the chip */
|
|
s = splhigh();
|
|
|
|
/* Enable write (stop time) */
|
|
cmd = intersil_command(INTERSIL_CMD_STOP, INTERSIL_CMD_IENABLE);
|
|
bus_space_write_1(bt, bh, INTERSIL_ICMD, cmd);
|
|
|
|
/* The order of reading writing the clock elements is important */
|
|
bus_space_write_1(bt, bh, INTERSIL_ICSEC, 0);
|
|
bus_space_write_1(bt, bh, INTERSIL_IHOUR, dt.dt_hour);
|
|
bus_space_write_1(bt, bh, INTERSIL_IMIN, dt.dt_min);
|
|
bus_space_write_1(bt, bh, INTERSIL_ISEC, dt.dt_sec);
|
|
bus_space_write_1(bt, bh, INTERSIL_IMON, dt.dt_mon);
|
|
bus_space_write_1(bt, bh, INTERSIL_IDAY, dt.dt_day);
|
|
bus_space_write_1(bt, bh, INTERSIL_IYEAR, year);
|
|
bus_space_write_1(bt, bh, INTERSIL_IDOW, dt.dt_wday);
|
|
|
|
/* Done writing (time wears on) */
|
|
cmd = intersil_command(INTERSIL_CMD_RUN, INTERSIL_CMD_IENABLE);
|
|
bus_space_write_1(bt, bh, INTERSIL_ICMD, cmd);
|
|
splx(s);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
intersil7170_getcal(handle, vp)
|
|
todr_chip_handle_t handle;
|
|
int *vp;
|
|
{
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
int
|
|
intersil7170_setcal(handle, v)
|
|
todr_chip_handle_t handle;
|
|
int v;
|
|
{
|
|
return (EOPNOTSUPP);
|
|
}
|