1 /* $NetBSD: memc_68k.c,v 1.1 2002/02/12 20:38:20 scw Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Steve C. Woodford. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Support for the MEMECC and MEMC40 memory controllers on MVME68K 41 */ 42 43 #include <sys/param.h> 44 #include <sys/kernel.h> 45 #include <sys/systm.h> 46 #include <sys/device.h> 47 #include <sys/malloc.h> 48 49 #include <machine/cpu.h> 50 #include <machine/bus.h> 51 52 #include <mvme68k/dev/mainbus.h> 53 54 #include <dev/mvme/memcvar.h> 55 #include <dev/mvme/memcreg.h> 56 #include <dev/mvme/pcctwovar.h> 57 #include <dev/mvme/pcctworeg.h> 58 59 60 int memc_match(struct device *, struct cfdata *, void *); 61 void memc_attach(struct device *, struct device *, void *); 62 63 struct cfattach memc_ca = { 64 sizeof(struct memc_softc), memc_match, memc_attach 65 }; 66 67 extern struct cfdriver memc_cd; 68 69 70 /* ARGSUSED */ 71 int 72 memc_match(parent, cf, aux) 73 struct device *parent; 74 struct cfdata *cf; 75 void *aux; 76 { 77 struct mainbus_attach_args *ma = aux; 78 bus_space_handle_t bh; 79 u_int8_t chipid; 80 int rv; 81 82 #ifdef MVME68K 83 if (machineid != MVME_167 && machineid != MVME_177 && 84 machineid != MVME_162 && machineid != MVME_172) 85 return (0); 86 #endif 87 88 if (strcmp(ma->ma_name, memc_cd.cd_name)) 89 return (0); 90 91 if (bus_space_map(ma->ma_bust, ma->ma_offset, MEMC_REGSIZE, 0, &bh)) 92 return (0); 93 94 rv = bus_space_peek_1(ma->ma_bust, bh, MEMC_REG_CHIP_ID, &chipid); 95 bus_space_unmap(ma->ma_bust, bh, MEMC_REGSIZE); 96 97 if (rv) 98 return (0); 99 100 /* Verify the Chip Id register is sane */ 101 if (chipid != MEMC_CHIP_ID_MEMC040 && chipid != MEMC_CHIP_ID_MEMECC) 102 return (0); 103 104 return (1); 105 } 106 107 /* ARGSUSED */ 108 void 109 memc_attach(parent, self, aux) 110 struct device *parent; 111 struct device *self; 112 void *aux; 113 { 114 struct mainbus_attach_args *ma = aux; 115 struct memc_softc *sc = (struct memc_softc *) self; 116 117 sc->sc_bust = ma->ma_bust; 118 119 /* Map the memory controller's registers */ 120 bus_space_map(sc->sc_bust, ma->ma_offset, MEMC_REGSIZE, 0, 121 &sc->sc_bush); 122 123 /* Finish initialisation in common code */ 124 memc_init(sc); 125 } 126