126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
/* $NetBSD: memc_68k.c,v 1.1 2002/02/12 20:38:20 scw Exp $ */
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/*-
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* Copyright (c) 2000, 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Steve C. Woodford.
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Support for the MEMECC and MEMC40 memory controllers on MVME68K
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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 <sys/malloc.h>
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#include <machine/cpu.h>
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#include <machine/bus.h>
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#include <mvme68k/dev/mainbus.h>
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#include <dev/mvme/memcvar.h>
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#include <dev/mvme/memcreg.h>
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#include <dev/mvme/pcctwovar.h>
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#include <dev/mvme/pcctworeg.h>
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int memc_match(struct device *, struct cfdata *, void *);
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void memc_attach(struct device *, struct device *, void *);
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struct cfattach memc_ca = {
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sizeof(struct memc_softc), memc_match, memc_attach
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};
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extern struct cfdriver memc_cd;
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/* ARGSUSED */
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int
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memc_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct mainbus_attach_args *ma = aux;
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bus_space_handle_t bh;
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u_int8_t chipid;
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int rv;
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#ifdef MVME68K
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if (machineid != MVME_167 && machineid != MVME_177 &&
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machineid != MVME_162 && machineid != MVME_172)
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return (0);
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#endif
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if (strcmp(ma->ma_name, memc_cd.cd_name))
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return (0);
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if (bus_space_map(ma->ma_bust, ma->ma_offset, MEMC_REGSIZE, 0, &bh))
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return (0);
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rv = bus_space_peek_1(ma->ma_bust, bh, MEMC_REG_CHIP_ID, &chipid);
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bus_space_unmap(ma->ma_bust, bh, MEMC_REGSIZE);
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if (rv)
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return (0);
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/* Verify the Chip Id register is sane */
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if (chipid != MEMC_CHIP_ID_MEMC040 && chipid != MEMC_CHIP_ID_MEMECC)
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return (0);
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return (1);
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}
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/* ARGSUSED */
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void
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memc_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 mainbus_attach_args *ma = aux;
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struct memc_softc *sc = (struct memc_softc *) self;
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sc->sc_bust = ma->ma_bust;
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/* Map the memory controller's registers */
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bus_space_map(sc->sc_bust, ma->ma_offset, MEMC_REGSIZE, 0,
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&sc->sc_bush);
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/* Finish initialisation in common code */
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memc_init(sc);
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}
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