1 /* $NetBSD: scsirom.c,v 1.6 2000/01/16 14:20:57 minoura Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Minoura Makoto. 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. The name of the author may not be used to endorse or promote products 23 * derived from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * SCSI BIOS ROM. 40 * Used to probe the board. 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 47 #include <machine/bus.h> 48 #include <machine/cpu.h> 49 50 #include <arch/x68k/dev/intiovar.h> 51 #include <arch/x68k/dev/scsiromvar.h> 52 53 struct { 54 paddr_t addr, devaddr; 55 int intr; 56 const char id[7]; 57 } scsirom_descr[] = {{ 58 0x00fc0000, 0x00e96020, 108, "SCSIIN" 59 }, { 60 0x00ea0020, 0x00ea0000, 246, "SCSIEX" 61 }}; 62 63 #define SCSIROM_ID 0x24 64 65 /* 66 * autoconf stuff 67 */ 68 static int scsirom_find __P((struct device *, struct intio_attach_args *)); 69 static int scsirom_match __P((struct device *, struct cfdata *, void *)); 70 static void scsirom_attach __P((struct device *, struct device *, void *)); 71 72 struct cfattach scsirom_ca = { 73 sizeof(struct scsirom_softc), scsirom_match, scsirom_attach 74 }; 75 76 static int 77 scsirom_find (parent, ia) 78 struct device *parent; 79 struct intio_attach_args *ia; 80 { 81 bus_space_handle_t ioh; 82 char buf[10]; 83 int which; 84 int r = -1; 85 86 if (ia->ia_addr == scsirom_descr[INTERNAL].addr) 87 which = INTERNAL; 88 else if (ia->ia_addr == scsirom_descr[EXTERNAL].addr) 89 which = EXTERNAL; 90 else 91 return -1; 92 93 ia->ia_size = 0x1fe0; 94 if (intio_map_allocate_region (parent, ia, INTIO_MAP_TESTONLY)) 95 return -1; 96 97 if (bus_space_map (ia->ia_bst, ia->ia_addr, ia->ia_size, 0, &ioh) < 0) 98 return -1; 99 if (badaddr ((caddr_t)INTIO_ADDR(ia->ia_addr+SCSIROM_ID))) { 100 bus_space_unmap (ia->ia_bst, ioh, ia->ia_size); 101 return -1; 102 } 103 bus_space_read_region_1 (ia->ia_bst, ioh, SCSIROM_ID, buf, 6); 104 if (memcmp(buf, scsirom_descr[which].id, 6) == 0) 105 r = which; 106 bus_space_unmap (ia->ia_bst, ioh, ia->ia_size); 107 108 return r; 109 } 110 111 static int 112 scsirom_match(parent, cf, aux) 113 struct device *parent; 114 struct cfdata *cf; 115 void *aux; 116 { 117 struct intio_attach_args *ia = aux; 118 int r; 119 120 if (strcmp (ia->ia_name, "scsirom") != 0) 121 return 0; 122 123 if (ia->ia_addr == INTIOCF_ADDR_DEFAULT) { 124 ia->ia_addr = scsirom_descr[0].addr; 125 r = scsirom_find (parent, ia); 126 if (r == INTERNAL) 127 return 1; 128 ia->ia_addr = scsirom_descr[1].addr; 129 r = scsirom_find (parent, ia); 130 if (r == EXTERNAL) 131 return 1; 132 return 0; 133 } else if (scsirom_find(parent, ia) >= 0) 134 return 1; 135 else 136 return 0; 137 } 138 139 static void 140 scsirom_attach(parent, self, aux) 141 struct device *parent, *self; 142 void *aux; 143 { 144 struct scsirom_softc *sc = (struct scsirom_softc *)self; 145 struct intio_attach_args *ia = aux; 146 int r; 147 struct cfdata *cf; 148 149 sc->sc_addr = ia->ia_addr; 150 sc->sc_which = scsirom_find (parent, ia); 151 #ifdef DIAGNOSTIC 152 if (sc->sc_which < 0) 153 panic ("SCSIROM curruption??"); 154 #endif 155 r = intio_map_allocate_region (parent, ia, INTIO_MAP_ALLOCATE); 156 #ifdef DIAGNOSTIC 157 if (r) 158 panic ("IO map for SCSIROM corruption??"); 159 #endif 160 161 ia->ia_addr = scsirom_descr[sc->sc_which].devaddr; 162 if (ia->ia_intr == INTIOCF_INTR_DEFAULT) 163 ia->ia_intr = scsirom_descr[sc->sc_which].intr; 164 165 if (sc->sc_which == INTERNAL) 166 printf (": On-board at %p\n", (void*)ia->ia_addr); 167 else 168 printf (": External at %p\n", (void*)ia->ia_addr); 169 170 cf = config_search (NULL, self, ia); 171 if (cf) { 172 config_attach(self, cf, ia, NULL); 173 } else { 174 printf ("%s: no matching device; ignored.\n", 175 self->dv_xname); 176 } 177 178 return; 179 } 180