c84f4e94d9
into sys/dev/dec and split into a clockfns layer and a "middle" layer for other DEC systems which use mcclocks with each onchip byte register padded out to a 32-bit word. Clone alpha/alpha/mcclock (also duplicated in pmax port) into sys/dev/dec, and ifdef for default clockrates on pmax and alpha. Use new machinery on pmax for ibus,ioasic attached mcclocks.
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/* $NetBSD: mcclock_ibus.c,v 1.2 1998/04/19 07:50:26 jonathan Exp $ */
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/*
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* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: mcclock_ibus.c,v 1.2 1998/04/19 07:50:26 jonathan Exp $");
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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 <dev/dec/clockvar.h>
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#include <dev/dec/mcclockvar.h>
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#include <dev/ic/mc146818reg.h>
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#include <pmax/ibus/ibusvar.h>
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#include <dev/dec/mcclock_pad32.h>
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int mcclock_ibus_match __P((struct device *, struct cfdata *, void *));
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void mcclock_ibus_attach __P((struct device *, struct device *, void *));
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struct cfattach mcclock_ibus_ca = {
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sizeof (struct mcclock_pad32_softc),
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(void *)mcclock_ibus_match, mcclock_ibus_attach,
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};
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int
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mcclock_ibus_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct ibus_attach_args *ia = aux;
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#define CFNAME(cf) ((cf)->dv_cfdata->cf_driver->cd_name)
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if (strcmp(CFNAME(parent), "ibus") != 0)
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return 0;
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if (strcmp("mc146818", ia->ia_name) != 0)
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return (0);
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if (badaddr((void*)ia->ia_addr, sizeof(u_int32_t)))
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return (0);
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return (1);
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}
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void
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mcclock_ibus_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct ibus_attach_args *ia =aux;
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struct mcclock_pad32_softc *sc = (struct mcclock_pad32_softc *)self;
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sc->sc_dp = (struct mcclock_pad32_clockdatum*)ia->ia_addr;
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/* Attach MI driver, using busfns with TC-style register padding */
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mcclock_attach(&sc->sc_mcclock, &mcclock_pad32_busfns);
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}
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