1 /*- 2 * Copyright (c) 1999 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/isa/isahint.c,v 1.8.2.1 2001/03/21 11:18:25 nyan Exp $ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/kernel.h> 32 #include <sys/bus.h> 33 #include <sys/module.h> 34 #include <sys/machintr.h> 35 36 #include "isavar.h" 37 38 static void 39 isahint_add_device(device_t parent, const char *name, int unit) 40 { 41 device_t child; 42 int sensitive, start, count, t; 43 int order; 44 45 /* device-specific flag overrides any wildcard */ 46 sensitive = 0; 47 if (resource_int_value(name, unit, "sensitive", &sensitive) != 0) 48 resource_int_value(name, -1, "sensitive", &sensitive); 49 50 if (sensitive) 51 order = ISA_ORDER_SENSITIVE; 52 else 53 order = ISA_ORDER_SPECULATIVE; 54 55 child = BUS_ADD_CHILD(parent, parent, order, name, unit); 56 if (child == 0) 57 return; 58 59 start = 0; 60 count = 0; 61 resource_int_value(name, unit, "port", &start); 62 resource_int_value(name, unit, "portsize", &count); 63 if (start > 0 || count > 0) 64 bus_set_resource(child, SYS_RES_IOPORT, 0, start, count, -1); 65 66 start = 0; 67 count = 0; 68 resource_int_value(name, unit, "maddr", &start); 69 resource_int_value(name, unit, "msize", &count); 70 if (start > 0 || count > 0) 71 bus_set_resource(child, SYS_RES_MEMORY, 0, start, count, -1); 72 73 if (resource_int_value(name, unit, "irq", &start) == 0 && start > 0) { 74 bus_set_resource(child, SYS_RES_IRQ, 0, start, 1, 75 machintr_legacy_intr_cpuid(start)); 76 } 77 78 if (resource_int_value(name, unit, "drq", &start) == 0 && start >= 0) 79 bus_set_resource(child, SYS_RES_DRQ, 0, start, 1, -1); 80 81 if (resource_int_value(name, unit, "flags", &t) == 0) 82 device_set_flags(child, t); 83 84 if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0) 85 device_disable(child); 86 } 87 88 static int 89 isahint_identify(driver_t *driver, device_t parent) 90 { 91 int i; 92 static char buf[] = "isaXXX"; 93 94 /* 95 * If the parent bus is already attached we are being called to 96 * rescan. We do not suppot rescanning the hints, just return 97 * success. 98 */ 99 if (device_get_state(parent) == DS_ATTACHED) 100 return(0); 101 if (device_get_state(parent) == DS_INPROGRESS) 102 return(0); 103 104 /* 105 * Add all devices configured to be attached to parent. 106 */ 107 ksprintf(buf, "isa%d", device_get_unit(parent)); 108 for (i = resource_query_string(-1, "at", buf); 109 i != -1; 110 i = resource_query_string(i, "at", buf)) { 111 if (strcmp(resource_query_name(i), "atkbd") == 0) 112 continue; /* old GENERIC kludge */ 113 isahint_add_device(parent, 114 resource_query_name(i), 115 resource_query_unit(i)); 116 } 117 118 /* 119 * and isa? 120 */ 121 for (i = resource_query_string(-1, "at", "isa"); 122 i != -1; 123 i = resource_query_string(i, "at", "isa")) { 124 if (strcmp(resource_query_name(i), "atkbd") == 0) 125 continue; /* old GENERIC kludge */ 126 isahint_add_device(parent, 127 resource_query_name(i), 128 resource_query_unit(i)); 129 } 130 return(0); 131 } 132 133 static device_method_t isahint_methods[] = { 134 /* Device interface */ 135 DEVMETHOD(device_identify, isahint_identify), 136 137 DEVMETHOD_END 138 }; 139 140 static driver_t isahint_driver = { 141 "hint", 142 isahint_methods, 143 1, /* no softc */ 144 }; 145 146 /* 147 * This will cause the identify routine to be called for any isa bus 148 * attached to the system. 149 */ 150 static devclass_t hint_devclass; 151 152 DRIVER_MODULE(isahint, isa, isahint_driver, hint_devclass, NULL, NULL); 153