1 /* $NetBSD: memc_68k.c,v 1.6 2008/01/12 09:54:22 tsutsui 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/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: memc_68k.c,v 1.6 2008/01/12 09:54:22 tsutsui Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/kernel.h> 48 #include <sys/systm.h> 49 #include <sys/device.h> 50 #include <sys/malloc.h> 51 52 #include <machine/cpu.h> 53 #include <machine/bus.h> 54 55 #include <mvme68k/dev/mainbus.h> 56 57 #include <dev/mvme/memcvar.h> 58 #include <dev/mvme/memcreg.h> 59 #include <dev/mvme/pcctwovar.h> 60 #include <dev/mvme/pcctworeg.h> 61 62 #include "ioconf.h" 63 64 int memc_match(struct device *, struct cfdata *, void *); 65 void memc_attach(struct device *, struct device *, void *); 66 67 CFATTACH_DECL(memc, sizeof(struct memc_softc), 68 memc_match, memc_attach, NULL, NULL); 69 70 71 /* ARGSUSED */ 72 int 73 memc_match(struct device *parent, struct cfdata *cf, void *aux) 74 { 75 struct mainbus_attach_args *ma = aux; 76 bus_space_handle_t bh; 77 uint8_t chipid; 78 int rv; 79 80 #ifdef MVME68K 81 if (machineid != MVME_167 && machineid != MVME_177 && 82 machineid != MVME_162 && machineid != MVME_172) 83 return 0; 84 #endif 85 86 if (strcmp(ma->ma_name, memc_cd.cd_name)) 87 return 0; 88 89 if (bus_space_map(ma->ma_bust, ma->ma_offset, MEMC_REGSIZE, 0, &bh)) 90 return 0; 91 92 rv = bus_space_peek_1(ma->ma_bust, bh, MEMC_REG_CHIP_ID, &chipid); 93 bus_space_unmap(ma->ma_bust, bh, MEMC_REGSIZE); 94 95 if (rv) 96 return 0; 97 98 /* Verify the Chip Id register is sane */ 99 if (chipid != MEMC_CHIP_ID_MEMC040 && chipid != MEMC_CHIP_ID_MEMECC) 100 return 0; 101 102 return 1; 103 } 104 105 /* ARGSUSED */ 106 void 107 memc_attach(struct device *parent, struct device *self, void *aux) 108 { 109 struct mainbus_attach_args *ma = aux; 110 struct memc_softc *sc = (struct memc_softc *)self; 111 112 sc->sc_bust = ma->ma_bust; 113 114 /* Map the memory controller's registers */ 115 bus_space_map(sc->sc_bust, ma->ma_offset, MEMC_REGSIZE, 0, 116 &sc->sc_bush); 117 118 /* Finish initialisation in common code */ 119 memc_init(sc); 120 } 121