NetBSD/sys/arch/mvme68k/dev/clock_pcc.c

134 lines
3.9 KiB
C

/* $NetBSD: clock_pcc.c,v 1.1 1996/04/26 18:59:58 chuck Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 REGENTS 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.
*/
/*
* Glue for the Peripheral Channel Controller timers and the
* Mostek clock chip found on the MVME-147.
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/psl.h>
#include <machine/cpu.h>
#include <mvme68k/mvme68k/clockreg.h>
#include <mvme68k/mvme68k/clockvar.h>
#include <mvme68k/dev/pccreg.h>
#include <mvme68k/dev/pccvar.h>
int clock_pcc_match __P((struct device *, void *, void *));
void clock_pcc_attach __P((struct device *, struct device *, void *));
int clock_pcc_intr __P((void *));
void clock_pcc_initclocks __P((void));
u_char clock_pcc_lvl;
struct cfattach clock_pcc_ca = {
sizeof(struct device), clock_pcc_match, clock_pcc_attach
};
int
clock_pcc_match(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct cfdata *cf = match;
struct pcc_attach_args *pa = aux;
static int clock_pcc_matched;
/* Only one clock, please. */
if (clock_pcc_matched)
return (0);
if (strcmp(pa->pa_name, clock_cd.cd_name))
return (0);
clock_pcc_matched = 1;
pa->pa_ipl = cf->pcccf_ipl;
return (1);
}
void
clock_pcc_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct pcc_attach_args *pa = aux;
caddr_t nvram, clockregs;
if (pa->pa_ipl != CLOCK_LEVEL)
panic("clock_pcc_attach: wrong interrupt level");
nvram = PCC_VADDR(pa->pa_offset);
clockregs = PCC_VADDR(pa->pa_offset + PCC_RTC_OFF);
/* Do common portions of clock config. */
clock_config(self, clockregs, nvram, MK48T02_SIZE,
clock_pcc_initclocks);
/* Attach the interrupt handler. */
pccintr_establish(PCCV_TIMER1, clock_pcc_intr, pa->pa_ipl, NULL);
/* XXX timer2 */
clock_pcc_lvl = pa->pa_ipl | PCC_IENABLE | PCC_TIMERACK;
}
void
clock_pcc_initclocks()
{
sys_pcc->t1_pload = PCC_TIMER100HZ;
sys_pcc->t1_cr = PCC_TIMERCLEAR;
sys_pcc->t1_cr = PCC_TIMERSTART;
sys_pcc->t1_int = clock_pcc_lvl;
}
int
clock_pcc_intr(frame)
void *frame;
{
sys_pcc->t1_int = clock_pcc_lvl;
hardclock(frame);
return (1);
}