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984263bc MD |
1 | /*- |
2 | * Copyright (c) 1998 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/i386/isa/isa.c,v 1.132.2.5 2002/03/03 05:42:50 nyan Exp $ | |
27 | */ | |
28 | ||
29 | /* | |
30 | * Modifications for Intel architecture by Garrett A. Wollman. | |
31 | * Copyright 1998 Massachusetts Institute of Technology | |
32 | * | |
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 | |
36 | * permission notice appear in all copies, that both the above | |
37 | * copyright notice and this permission notice appear in all | |
38 | * supporting documentation, and that the name of M.I.T. not be used | |
39 | * in advertising or publicity pertaining to distribution of the | |
40 | * software without specific, written prior permission. M.I.T. makes | |
41 | * no representations about the suitability of this software for any | |
42 | * purpose. It is provided "as is" without express or implied | |
43 | * warranty. | |
44 | * | |
45 | * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS | |
46 | * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
47 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
48 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT | |
49 | * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
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, | |
54 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | |
55 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
56 | * SUCH DAMAGE. | |
57 | */ | |
58 | ||
59 | #include <sys/param.h> | |
60 | #include <sys/bus.h> | |
61 | #include <sys/malloc.h> | |
984263bc | 62 | #include <sys/rman.h> |
4f7fe8c7 | 63 | #include <sys/machintr.h> |
984263bc | 64 | |
1f2de5d4 MD |
65 | #include "../isavar.h" |
66 | #include "../isa_common.h" | |
984263bc MD |
67 | |
68 | void | |
69 | isa_init(void) | |
70 | { | |
984263bc MD |
71 | } |
72 | ||
73 | /* | |
74 | * This implementation simply passes the request up to the parent | |
75 | * bus, which in our case is the special i386 nexus, substituting any | |
76 | * configured values if the caller defaulted. We can get away with | |
77 | * this because there is no special mapping for ISA resources on an Intel | |
78 | * platform. When porting this code to another architecture, it may be | |
79 | * necessary to interpose a mapping layer here. | |
80 | */ | |
81 | struct resource * | |
82 | isa_alloc_resource(device_t bus, device_t child, int type, int *rid, | |
4f7fe8c7 | 83 | u_long start, u_long end, u_long count, u_int flags, int cpuid) |
984263bc MD |
84 | { |
85 | /* | |
86 | * Consider adding a resource definition. We allow rid 0-1 for | |
87 | * irq and drq, 0-3 for memory and 0-7 for ports which is | |
88 | * sufficient for isapnp. | |
89 | */ | |
90 | int passthrough = (device_get_parent(child) != bus); | |
91 | int isdefault = (start == 0UL && end == ~0UL); | |
92 | struct isa_device* idev = DEVTOISA(child); | |
93 | struct resource_list *rl = &idev->id_resources; | |
94 | struct resource_list_entry *rle; | |
95 | ||
96 | if (!passthrough && !isdefault) { | |
97 | rle = resource_list_find(rl, type, *rid); | |
98 | if (!rle) { | |
99 | if (*rid < 0) | |
100 | return 0; | |
101 | switch (type) { | |
102 | case SYS_RES_IRQ: | |
103 | if (*rid >= ISA_NIRQ) | |
104 | return 0; | |
bec969af | 105 | cpuid = machintr_legacy_intr_cpuid(start); |
984263bc MD |
106 | break; |
107 | case SYS_RES_DRQ: | |
108 | if (*rid >= ISA_NDRQ) | |
109 | return 0; | |
110 | break; | |
111 | case SYS_RES_MEMORY: | |
112 | if (*rid >= ISA_NMEM) | |
113 | return 0; | |
114 | break; | |
115 | case SYS_RES_IOPORT: | |
116 | if (*rid >= ISA_NPORT) | |
117 | return 0; | |
118 | break; | |
119 | default: | |
120 | return 0; | |
121 | } | |
1b000e91 | 122 | resource_list_add(rl, type, *rid, start, end, |
4f7fe8c7 | 123 | count, cpuid); |
984263bc MD |
124 | } |
125 | } | |
126 | ||
127 | return resource_list_alloc(rl, bus, child, type, rid, | |
4f7fe8c7 | 128 | start, end, count, flags, cpuid); |
984263bc MD |
129 | } |
130 | ||
984263bc MD |
131 | int |
132 | isa_release_resource(device_t bus, device_t child, int type, int rid, | |
133 | struct resource *r) | |
134 | { | |
135 | struct isa_device* idev = DEVTOISA(child); | |
136 | struct resource_list *rl = &idev->id_resources; | |
984263bc | 137 | |
984263bc MD |
138 | return resource_list_release(rl, bus, child, type, rid, r); |
139 | } | |
140 | ||
141 | /* | |
142 | * We can't use the bus_generic_* versions of these methods because those | |
143 | * methods always pass the bus param as the requesting device, and we need | |
144 | * to pass the child (the i386 nexus knows about this and is prepared to | |
145 | * deal). | |
146 | */ | |
147 | int | |
148 | isa_setup_intr(device_t bus, device_t child, struct resource *r, int flags, | |
e9cb6d99 MD |
149 | void (*ihand)(void *), void *arg, |
150 | void **cookiep, lwkt_serialize_t serializer) | |
984263bc MD |
151 | { |
152 | return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags, | |
0e6f0e28 | 153 | ihand, arg, cookiep, serializer, NULL)); |
984263bc MD |
154 | } |
155 | ||
156 | int | |
157 | isa_teardown_intr(device_t bus, device_t child, struct resource *r, | |
158 | void *cookie) | |
159 | { | |
160 | return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie)); | |
161 | } |