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 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/bus.h> 34 #include <sys/module.h> 35 #include <isa/isavar.h> 36 #include <machine/resource.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; 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, 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); 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); 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 76 if (resource_int_value(name, unit, "drq", &start) == 0 && start >= 0) 77 bus_set_resource(child, SYS_RES_DRQ, 0, start, 1); 78 79 if (resource_disabled(name, unit)) 80 device_disable(child); 81 } 82 83 static void 84 isahint_identify(driver_t *driver, device_t parent) 85 { 86 int i; 87 static char buf[] = "isaXXX"; 88 const char *dname; 89 int dunit; 90 91 /* 92 * Add all devices configured to be attached to parent. 93 */ 94 sprintf(buf, "isa%d", device_get_unit(parent)); 95 i = 0; 96 while ((resource_find_match(&i, &dname, &dunit, "at", buf)) == 0) { 97 if (strcmp(dname, "atkbd") == 0) 98 continue; /* old GENERIC kludge */ 99 isahint_add_device(parent, dname, dunit); 100 } 101 102 /* 103 * and isa? 104 */ 105 i = 0; 106 while ((resource_find_match(&i, &dname, &dunit, "at", "isa")) == 0) { 107 if (strcmp(dname, "atkbd") == 0) 108 continue; /* old GENERIC kludge */ 109 isahint_add_device(parent, dname, dunit); 110 } 111 } 112 113 static device_method_t isahint_methods[] = { 114 /* Device interface */ 115 DEVMETHOD(device_identify, isahint_identify), 116 117 { 0, 0 } 118 }; 119 120 static driver_t isahint_driver = { 121 "hint", 122 isahint_methods, 123 1, /* no softc */ 124 }; 125 126 static devclass_t hint_devclass; 127 128 DRIVER_MODULE(isahint, isa, isahint_driver, hint_devclass, 0, 0); 129