Moved to /cvsroot/syssrc/sys/arch/arc/arc/clock_mc.c,v
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/* $NetBSD: clock_mc.c,v 1.3 1996/10/13 03:31:34 christos Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah Hdr: clock.c 1.18 91/01/21
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*
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* @(#)clock.c 8.1 (Berkeley) 6/10/93
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/autoconf.h>
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#include <machine/pio.h>
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#include <pica/pica/clockvar.h>
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#include <pica/pica/picatype.h>
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#include <pica/pica/pica.h>
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#include <dev/ic/mc146818reg.h>
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extern u_int cputype;
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extern int cpu_int_mask;
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void mcclock_attach __P((struct device *parent,
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struct device *self, void *aux));
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static void mcclock_init __P((struct clock_softc *csc));
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static void mcclock_get __P((struct clock_softc *csc, time_t base,
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struct tod_time *ct));
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static void mcclock_set __P((struct clock_softc *csc,
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struct tod_time *ct));
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struct mcclockdata {
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void (*mc_write) __P((struct clock_softc *csc, u_int reg,
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u_int datum));
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u_int (*mc_read) __P((struct clock_softc *csc, u_int reg));
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void *mc_addr;
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};
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#define mc146818_write(sc, reg, datum) \
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(*((struct mcclockdata *)sc->sc_data)->mc_write)(sc, reg, datum)
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#define mc146818_read(sc, reg) \
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(*((struct mcclockdata *)sc->sc_data)->mc_read)(sc, reg)
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#if defined(MIPS_PICA_61)
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static void mc_write_pica __P((struct clock_softc *csc, u_int reg,
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u_int datum));
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static u_int mc_read_pica __P((struct clock_softc *csc, u_int reg));
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static struct mcclockdata mcclockdata_pica = { mc_write_pica, mc_read_pica };
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#endif
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void
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mcclock_attach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct clock_softc *csc = (struct clock_softc *)self;
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register volatile struct chiptime *c;
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struct confargs *ca = aux;
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printf(": mc146818 or compatible");
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csc->sc_init = mcclock_init;
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csc->sc_get = mcclock_get;
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csc->sc_set = mcclock_set;
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switch (cputype) {
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case MIPS_PICA_61:
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/*
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* XXX should really allocate a new one and copy, or
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* something. unlikely we'll have more than one...
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*/
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csc->sc_data = &mcclockdata_pica;
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mcclockdata_pica.mc_addr = BUS_CVTADDR(ca);
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break;
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default:
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printf("\n");
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panic("don't know how to set up for other system types.");
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}
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/* Turn interrupts off, just in case. */
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mc146818_write(csc, MC_REGB, MC_REGB_BINARY | MC_REGB_24HR);
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}
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static void
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mcclock_init(csc)
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struct clock_softc *csc;
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{
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/* XXX Does not really belong here but for the moment we don't care */
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out32(PICA_SYS_IT_VALUE, 9); /* 10ms - 1 */
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/* Enable periodic clock interrupt */
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out32(PICA_SYS_EXT_IMASK, cpu_int_mask);
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}
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/*
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* Get the time of day, based on the clock's value and/or the base value.
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*/
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static void
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mcclock_get(csc, base, ct)
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struct clock_softc *csc;
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time_t base;
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struct tod_time *ct;
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{
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mc_todregs regs;
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int s;
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s = splclock();
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MC146818_GETTOD(csc, ®s)
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splx(s);
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ct->sec = regs[MC_SEC];
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ct->min = regs[MC_MIN];
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ct->hour = regs[MC_HOUR];
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ct->dow = regs[MC_DOW];
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ct->day = regs[MC_DOM];
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ct->mon = regs[MC_MONTH];
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ct->year = regs[MC_YEAR];
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}
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/*
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* Reset the TODR based on the time value.
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*/
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static void
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mcclock_set(csc, ct)
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struct clock_softc *csc;
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struct tod_time *ct;
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{
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mc_todregs regs;
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int s;
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s = splclock();
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MC146818_GETTOD(csc, ®s);
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splx(s);
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regs[MC_SEC] = ct->sec;
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regs[MC_MIN] = ct->min;
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regs[MC_HOUR] = ct->hour;
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regs[MC_DOW] = ct->dow;
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regs[MC_DOM] = ct->day;
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regs[MC_MONTH] = ct->mon;
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regs[MC_YEAR] = ct->year;
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s = splclock();
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MC146818_PUTTOD(csc, ®s);
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splx(s);
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}
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#if defined(ACER_PICA_61)
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static void
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mc_write_pica(csc, reg, datum)
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struct clock_softc *csc;
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u_int reg, datum;
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{
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int i,as;
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as = in32(PICA_SYS_ISA_AS) & 0x80;
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out32(PICA_SYS_ISA_AS, as | reg);
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outb(PICA_SYS_CLOCK, datum);
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}
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static u_int
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mc_read_pica(csc, reg)
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struct clock_softc *csc;
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u_int reg;
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{
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int i,as;
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as = in32(PICA_SYS_ISA_AS) & 0x80;
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out32(PICA_SYS_ISA_AS, as | reg);
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i = inb(PICA_SYS_CLOCK);
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return(i);
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}
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#endif /*ACER_PICA_61*/
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