| 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 | * $DragonFly: src/sys/bus/isa/isahint.c,v 1.4 2005/10/28 03:25:35 dillon Exp $ |
| 28 | */ |
| 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 "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, 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, 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_int_value(name, unit, "flags", &t) == 0) |
| 80 | device_set_flags(child, t); |
| 81 | |
| 82 | if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0) |
| 83 | device_disable(child); |
| 84 | } |
| 85 | |
| 86 | static int |
| 87 | isahint_identify(driver_t *driver, device_t parent) |
| 88 | { |
| 89 | int i; |
| 90 | static char buf[] = "isaXXX"; |
| 91 | |
| 92 | /* |
| 93 | * If the parent bus is already attached we are being called to |
| 94 | * rescan. We do not suppot rescanning the hints, just return |
| 95 | * success. |
| 96 | */ |
| 97 | if (device_get_state(parent) == DS_ATTACHED) |
| 98 | return(0); |
| 99 | |
| 100 | /* |
| 101 | * Add all devices configured to be attached to parent. |
| 102 | */ |
| 103 | sprintf(buf, "isa%d", device_get_unit(parent)); |
| 104 | for (i = resource_query_string(-1, "at", buf); |
| 105 | i != -1; |
| 106 | i = resource_query_string(i, "at", buf)) { |
| 107 | if (strcmp(resource_query_name(i), "atkbd") == 0) |
| 108 | continue; /* old GENERIC kludge */ |
| 109 | isahint_add_device(parent, |
| 110 | resource_query_name(i), |
| 111 | resource_query_unit(i)); |
| 112 | } |
| 113 | |
| 114 | /* |
| 115 | * and isa? |
| 116 | */ |
| 117 | for (i = resource_query_string(-1, "at", "isa"); |
| 118 | i != -1; |
| 119 | i = resource_query_string(i, "at", "isa")) { |
| 120 | if (strcmp(resource_query_name(i), "atkbd") == 0) |
| 121 | continue; /* old GENERIC kludge */ |
| 122 | isahint_add_device(parent, |
| 123 | resource_query_name(i), |
| 124 | resource_query_unit(i)); |
| 125 | } |
| 126 | return(0); |
| 127 | } |
| 128 | |
| 129 | static device_method_t isahint_methods[] = { |
| 130 | /* Device interface */ |
| 131 | DEVMETHOD(device_identify, isahint_identify), |
| 132 | |
| 133 | { 0, 0 } |
| 134 | }; |
| 135 | |
| 136 | static driver_t isahint_driver = { |
| 137 | "hint", |
| 138 | isahint_methods, |
| 139 | 1, /* no softc */ |
| 140 | }; |
| 141 | |
| 142 | /* |
| 143 | * This will cause the identify routine to be called for any isa bus |
| 144 | * attached to the system. |
| 145 | */ |
| 146 | static devclass_t hint_devclass; |
| 147 | |
| 148 | DRIVER_MODULE(isahint, isa, isahint_driver, hint_devclass, 0, 0); |