1/* $NetBSD: scsirom.c,v 1.22 2021/08/07 16:19:07 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 1999 The 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 * 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 * SCSI BIOS ROM. 34 * Used to probe the board. 35 */ 36 37#include <sys/cdefs.h> 38__KERNEL_RCSID(0, "$NetBSD: scsirom.c,v 1.22 2021/08/07 16:19:07 thorpej Exp $"); 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/device.h> 43 44#include <machine/bus.h> 45#include <machine/cpu.h> 46 47#include <arch/x68k/dev/intiovar.h> 48#include <arch/x68k/dev/scsiromvar.h> 49 50struct { 51 paddr_t addr, devaddr; 52 int intr; 53 const char id[7]; 54} scsirom_descr[] = {{ 55 0x00fc0000, 0x00e96020, 108, "SCSIIN" 56}, { 57 0x00ea0020, 0x00ea0000, 246, "SCSIEX" 58}}; 59 60#define SCSIROM_ID 0x24 61 62/* 63 * autoconf stuff 64 */ 65static int scsirom_find(device_t, struct intio_attach_args *); 66static int scsirom_match(device_t, cfdata_t, void *); 67static void scsirom_attach(device_t, device_t, void *); 68 69CFATTACH_DECL_NEW(scsirom, sizeof(struct scsirom_softc), 70 scsirom_match, scsirom_attach, NULL, NULL); 71 72static int 73scsirom_find(device_t parent, struct intio_attach_args *ia) 74{ 75 bus_space_handle_t ioh; 76 char buf[10]; 77 int which; 78 int r = -1; 79 80 if (ia->ia_addr == scsirom_descr[INTERNAL].addr) 81 which = INTERNAL; 82 else if (ia->ia_addr == scsirom_descr[EXTERNAL].addr) 83 which = EXTERNAL; 84 else 85 return -1; 86 87 ia->ia_size = 0x1fe0; 88 if (intio_map_allocate_region(parent, ia, INTIO_MAP_TESTONLY)) 89 return -1; 90 91 if (bus_space_map(ia->ia_bst, ia->ia_addr, ia->ia_size, 0, &ioh) < 0) 92 return -1; 93 if (badaddr((void *)IIOV(ia->ia_addr+SCSIROM_ID))) { 94 bus_space_unmap(ia->ia_bst, ioh, ia->ia_size); 95 return -1; 96 } 97 bus_space_read_region_1(ia->ia_bst, ioh, SCSIROM_ID, buf, 6); 98 if (memcmp(buf, scsirom_descr[which].id, 6) == 0) 99 r = which; 100 bus_space_unmap(ia->ia_bst, ioh, ia->ia_size); 101 102 return r; 103} 104 105static int 106scsirom_match(device_t parent, cfdata_t cf, void *aux) 107{ 108 struct intio_attach_args *ia = aux; 109 int r; 110 111 if (strcmp(ia->ia_name, "scsirom") != 0) 112 return 0; 113 114 if (ia->ia_addr == INTIOCF_ADDR_DEFAULT) { 115 ia->ia_addr = scsirom_descr[0].addr; 116 r = scsirom_find(parent, ia); 117 if (r == INTERNAL) 118 return 1; 119 ia->ia_addr = scsirom_descr[1].addr; 120 r = scsirom_find(parent, ia); 121 if (r == EXTERNAL) 122 return 1; 123 return 0; 124 } else if (scsirom_find(parent, ia) >= 0) 125 return 1; 126 else 127 return 0; 128} 129 130static void 131scsirom_attach(device_t parent, device_t self, void *aux) 132{ 133 struct scsirom_softc *sc = device_private(self); 134 struct intio_attach_args *ia = aux; 135 int r __diagused; 136 cfdata_t cf; 137 138 sc->sc_addr = ia->ia_addr; 139 sc->sc_which = scsirom_find(parent, ia); 140#ifdef DIAGNOSTIC 141 if (sc->sc_which < 0) 142 panic("SCSIROM curruption??"); 143#endif 144 r = intio_map_allocate_region(parent, ia, INTIO_MAP_ALLOCATE); 145#ifdef DIAGNOSTIC 146 if (r) 147 panic("IO map for SCSIROM corruption??"); 148#endif 149 150 ia->ia_addr = scsirom_descr[sc->sc_which].devaddr; 151 if (ia->ia_intr == INTIOCF_INTR_DEFAULT) 152 ia->ia_intr = scsirom_descr[sc->sc_which].intr; 153 154 if (sc->sc_which == INTERNAL) 155 aprint_normal(": On-board at %p\n", (void *)ia->ia_addr); 156 else 157 aprint_normal(": External at %p\n", (void *)ia->ia_addr); 158 159 cf = config_search(self, ia, 160 CFARGS_NONE); 161 if (cf) { 162 config_attach(self, cf, ia, NULL, CFARGS_NONE); 163 } else { 164 aprint_normal_dev(self, "no matching device; ignored.\n"); 165 } 166 167 return; 168} 169