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 <isa/isa_common.h> 37 #include <machine/resource.h> 38 39 void 40 isa_hinted_child(device_t parent, const char *name, int unit) 41 { 42 device_t child; 43 int sensitive, start, count; 44 int order; 45 46 /* device-specific flag overrides any wildcard */ 47 sensitive = 0; 48 if (resource_int_value(name, unit, "sensitive", &sensitive) != 0) 49 resource_int_value(name, -1, "sensitive", &sensitive); 50 51 if (sensitive) 52 order = ISA_ORDER_SENSITIVE; 53 else 54 order = ISA_ORDER_SPECULATIVE; 55 56 child = BUS_ADD_CHILD(parent, order, name, unit); 57 if (child == 0) 58 return; 59 60 start = 0; 61 count = 0; 62 resource_int_value(name, unit, "port", &start); 63 resource_int_value(name, unit, "portsize", &count); 64 if (start > 0 || count > 0) 65 bus_set_resource(child, SYS_RES_IOPORT, 0, start, count); 66 67 start = 0; 68 count = 0; 69 resource_int_value(name, unit, "maddr", &start); 70 resource_int_value(name, unit, "msize", &count); 71 if (start > 0 || count > 0) 72 bus_set_resource(child, SYS_RES_MEMORY, 0, start, count); 73 74 if (resource_int_value(name, unit, "irq", &start) == 0 && start > 0) 75 bus_set_resource(child, SYS_RES_IRQ, 0, start, 1); 76 77 if (resource_int_value(name, unit, "drq", &start) == 0 && start >= 0) 78 bus_set_resource(child, SYS_RES_DRQ, 0, start, 1); 79 80 if (resource_disabled(name, unit)) 81 device_disable(child); 82 83 isa_set_configattr(child, (isa_get_configattr(child)|ISACFGATTR_HINTS)); 84 } 85 86 static int 87 isa_match_resource_hint(device_t dev, int type, long value) 88 { 89 struct isa_device* idev = DEVTOISA(dev); 90 struct resource_list *rl = &idev->id_resources; 91 struct resource_list_entry *rle; 92 93 STAILQ_FOREACH(rle, rl, link) { 94 if (rle->type != type) 95 continue; 96 if (rle->start <= value && rle->end >= value) 97 return (1); 98 } 99 return (0); 100 } 101 102 void 103 isa_hint_device_unit(device_t bus, device_t child, const char *name, int *unitp) 104 { 105 const char *s; 106 long value; 107 int line, matches, unit; 108 109 line = 0; 110 for (;;) { 111 if (resource_find_dev(&line, name, &unit, "at", NULL) != 0) 112 break; 113 114 /* Must have an "at" for isa. */ 115 resource_string_value(name, unit, "at", &s); 116 if (!(strcmp(s, device_get_nameunit(bus)) == 0 || 117 strcmp(s, device_get_name(bus)) == 0)) 118 continue; 119 120 /* 121 * Check for matching resources. We must have at least one, 122 * and all resources specified have to match. 123 * 124 * XXX: We may want to revisit this to be more lenient and wire 125 * as long as it gets one match. 126 */ 127 matches = 0; 128 if (resource_long_value(name, unit, "port", &value) == 0) { 129 if (isa_match_resource_hint(child, SYS_RES_IOPORT, 130 value)) 131 matches++; 132 else 133 continue; 134 } 135 if (resource_long_value(name, unit, "maddr", &value) == 0) { 136 if (isa_match_resource_hint(child, SYS_RES_MEMORY, 137 value)) 138 matches++; 139 else 140 continue; 141 } 142 if (resource_long_value(name, unit, "irq", &value) == 0) { 143 if (isa_match_resource_hint(child, SYS_RES_IRQ, value)) 144 matches++; 145 else 146 continue; 147 } 148 if (resource_long_value(name, unit, "drq", &value) == 0) { 149 if (isa_match_resource_hint(child, SYS_RES_DRQ, value)) 150 matches++; 151 else 152 continue; 153 } 154 155 if (matches > 0) { 156 /* We have a winner! */ 157 *unitp = unit; 158 break; 159 } 160 } 161 } 162