2 * Copyright (c) 1998 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
30 * Modifications for Intel architecture by Garrett A. Wollman.
31 * Copyright 1998 Massachusetts Institute of Technology
33 * Permission to use, copy, modify, and distribute this software and
34 * its documentation for any purpose and without fee is hereby
35 * granted, provided that both the above copyright notice and this
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42 * purpose. It is provided "as is" without express or implied
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47 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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50 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
51 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
52 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
53 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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55 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 #include <sys/param.h>
61 #include <sys/malloc.h>
62 #include <machine/bus.h>
65 #include <machine/resource.h>
67 #include <isa/isareg.h>
68 #include <isa/isavar.h>
69 #include <isa/isa_common.h>
72 isa_init(device_t dev)
77 * This implementation simply passes the request up to the parent
78 * bus, which in our case is the special i386 nexus, substituting any
79 * configured values if the caller defaulted. We can get away with
80 * this because there is no special mapping for ISA resources on an Intel
81 * platform. When porting this code to another architecture, it may be
82 * necessary to interpose a mapping layer here.
85 isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
86 u_long start, u_long end, u_long count, u_int flags)
89 * Consider adding a resource definition.
91 int passthrough = (device_get_parent(child) != bus);
92 int isdefault = (start == 0UL && end == ~0UL);
93 struct isa_device* idev = DEVTOISA(child);
94 struct resource_list *rl = &idev->id_resources;
95 struct resource_list_entry *rle;
97 if (!passthrough && !isdefault) {
98 rle = resource_list_find(rl, type, *rid);
104 if (*rid >= ISA_NIRQ)
108 if (*rid >= ISA_NDRQ)
112 if (*rid >= ISA_NMEM)
116 if (*rid >= ISA_NPORT)
122 resource_list_add(rl, type, *rid, start, end, count);
126 return resource_list_alloc(rl, bus, child, type, rid,
127 start, end, count, flags);
131 isa_release_resource(device_t bus, device_t child, int type, int rid,
134 struct isa_device* idev = DEVTOISA(child);
135 struct resource_list *rl = &idev->id_resources;
136 return resource_list_release(rl, bus, child, type, rid, r);