1 /* $NetBSD: memc_68k.c,v 1.7 2008/04/28 20:23:29 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Support for the MEMECC and MEMC40 memory controllers on MVME68K 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: memc_68k.c,v 1.7 2008/04/28 20:23:29 martin Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/kernel.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 #include <sys/malloc.h> 44 45 #include <machine/cpu.h> 46 #include <machine/bus.h> 47 48 #include <mvme68k/dev/mainbus.h> 49 50 #include <dev/mvme/memcvar.h> 51 #include <dev/mvme/memcreg.h> 52 #include <dev/mvme/pcctwovar.h> 53 #include <dev/mvme/pcctworeg.h> 54 55 #include "ioconf.h" 56 57 int memc_match(struct device *, struct cfdata *, void *); 58 void memc_attach(struct device *, struct device *, void *); 59 60 CFATTACH_DECL(memc, sizeof(struct memc_softc), 61 memc_match, memc_attach, NULL, NULL); 62 63 64 /* ARGSUSED */ 65 int 66 memc_match(struct device *parent, struct cfdata *cf, void *aux) 67 { 68 struct mainbus_attach_args *ma = aux; 69 bus_space_handle_t bh; 70 uint8_t chipid; 71 int rv; 72 73 #ifdef MVME68K 74 if (machineid != MVME_167 && machineid != MVME_177 && 75 machineid != MVME_162 && machineid != MVME_172) 76 return 0; 77 #endif 78 79 if (strcmp(ma->ma_name, memc_cd.cd_name)) 80 return 0; 81 82 if (bus_space_map(ma->ma_bust, ma->ma_offset, MEMC_REGSIZE, 0, &bh)) 83 return 0; 84 85 rv = bus_space_peek_1(ma->ma_bust, bh, MEMC_REG_CHIP_ID, &chipid); 86 bus_space_unmap(ma->ma_bust, bh, MEMC_REGSIZE); 87 88 if (rv) 89 return 0; 90 91 /* Verify the Chip Id register is sane */ 92 if (chipid != MEMC_CHIP_ID_MEMC040 && chipid != MEMC_CHIP_ID_MEMECC) 93 return 0; 94 95 return 1; 96 } 97 98 /* ARGSUSED */ 99 void 100 memc_attach(struct device *parent, struct device *self, void *aux) 101 { 102 struct mainbus_attach_args *ma = aux; 103 struct memc_softc *sc = (struct memc_softc *)self; 104 105 sc->sc_bust = ma->ma_bust; 106 107 /* Map the memory controller's registers */ 108 bus_space_map(sc->sc_bust, ma->ma_offset, MEMC_REGSIZE, 0, 109 &sc->sc_bush); 110 111 /* Finish initialisation in common code */ 112 memc_init(sc); 113 } 114