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 35 #include "isavar.h" 36 37 static void 38 isahint_add_device(device_t parent, const char *name, int unit) 39 { 40 device_t child; 41 int sensitive, start, count, t; 42 int order; 43 44 /* device-specific flag overrides any wildcard */ 45 sensitive = 0; 46 if (resource_int_value(name, unit, "sensitive", &sensitive) != 0) 47 resource_int_value(name, -1, "sensitive", &sensitive); 48 49 if (sensitive) 50 order = ISA_ORDER_SENSITIVE; 51 else 52 order = ISA_ORDER_SPECULATIVE; 53 54 child = BUS_ADD_CHILD(parent, parent, order, name, unit); 55 if (child == 0) 56 return; 57 58 start = 0; 59 count = 0; 60 resource_int_value(name, unit, "port", &start); 61 resource_int_value(name, unit, "portsize", &count); 62 if (start > 0 || count > 0) 63 bus_set_resource(child, SYS_RES_IOPORT, 0, start, count); 64 65 start = 0; 66 count = 0; 67 resource_int_value(name, unit, "maddr", &start); 68 resource_int_value(name, unit, "msize", &count); 69 if (start > 0 || count > 0) 70 bus_set_resource(child, SYS_RES_MEMORY, 0, start, count); 71 72 if (resource_int_value(name, unit, "irq", &start) == 0 && start > 0) 73 bus_set_resource(child, SYS_RES_IRQ, 0, start, 1); 74 75 if (resource_int_value(name, unit, "drq", &start) == 0 && start >= 0) 76 bus_set_resource(child, SYS_RES_DRQ, 0, start, 1); 77 78 if (resource_int_value(name, unit, "flags", &t) == 0) 79 device_set_flags(child, t); 80 81 if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0) 82 device_disable(child); 83 } 84 85 static int 86 isahint_identify(driver_t *driver, device_t parent) 87 { 88 int i; 89 static char buf[] = "isaXXX"; 90 91 /* 92 * If the parent bus is already attached we are being called to 93 * rescan. We do not suppot rescanning the hints, just return 94 * success. 95 */ 96 if (device_get_state(parent) == DS_ATTACHED) 97 return(0); 98 if (device_get_state(parent) == DS_INPROGRESS) 99 return(0); 100 101 /* 102 * Add all devices configured to be attached to parent. 103 */ 104 ksprintf(buf, "isa%d", device_get_unit(parent)); 105 for (i = resource_query_string(-1, "at", buf); 106 i != -1; 107 i = resource_query_string(i, "at", buf)) { 108 if (strcmp(resource_query_name(i), "atkbd") == 0) 109 continue; /* old GENERIC kludge */ 110 isahint_add_device(parent, 111 resource_query_name(i), 112 resource_query_unit(i)); 113 } 114 115 /* 116 * and isa? 117 */ 118 for (i = resource_query_string(-1, "at", "isa"); 119 i != -1; 120 i = resource_query_string(i, "at", "isa")) { 121 if (strcmp(resource_query_name(i), "atkbd") == 0) 122 continue; /* old GENERIC kludge */ 123 isahint_add_device(parent, 124 resource_query_name(i), 125 resource_query_unit(i)); 126 } 127 return(0); 128 } 129 130 static device_method_t isahint_methods[] = { 131 /* Device interface */ 132 DEVMETHOD(device_identify, isahint_identify), 133 134 { 0, 0 } 135 }; 136 137 static driver_t isahint_driver = { 138 "hint", 139 isahint_methods, 140 1, /* no softc */ 141 }; 142 143 /* 144 * This will cause the identify routine to be called for any isa bus 145 * attached to the system. 146 */ 147 static devclass_t hint_devclass; 148 149 DRIVER_MODULE(isahint, isa, isahint_driver, hint_devclass, NULL, NULL); 150