kernel/isa: Remove empty isa_init() (formerly used for COMPAT_OLDISA).
[dragonfly.git] / sys / bus / isa / x86_64 / isa.c
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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 $
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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>
62#include <sys/rman.h>
4f7fe8c7 63#include <sys/machintr.h>
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64
65#include "../isavar.h"
66#include "../isa_common.h"
67
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68/*
69 * This implementation simply passes the request up to the parent
70 * bus, which in our case is the special i386 nexus, substituting any
71 * configured values if the caller defaulted. We can get away with
72 * this because there is no special mapping for ISA resources on an Intel
73 * platform. When porting this code to another architecture, it may be
74 * necessary to interpose a mapping layer here.
75 */
76struct resource *
77isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
4f7fe8c7 78 u_long start, u_long end, u_long count, u_int flags, int cpuid)
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79{
80 /*
81 * Consider adding a resource definition. We allow rid 0-1 for
82 * irq and drq, 0-3 for memory and 0-7 for ports which is
83 * sufficient for isapnp.
84 */
85 int passthrough = (device_get_parent(child) != bus);
86 int isdefault = (start == 0UL && end == ~0UL);
87 struct isa_device* idev = DEVTOISA(child);
88 struct resource_list *rl = &idev->id_resources;
89 struct resource_list_entry *rle;
90
91 if (!passthrough && !isdefault) {
92 rle = resource_list_find(rl, type, *rid);
93 if (!rle) {
94 if (*rid < 0)
95 return 0;
96 switch (type) {
97 case SYS_RES_IRQ:
98 if (*rid >= ISA_NIRQ)
99 return 0;
bec969af 100 cpuid = machintr_legacy_intr_cpuid(start);
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101 break;
102 case SYS_RES_DRQ:
103 if (*rid >= ISA_NDRQ)
104 return 0;
105 break;
106 case SYS_RES_MEMORY:
107 if (*rid >= ISA_NMEM)
108 return 0;
109 break;
110 case SYS_RES_IOPORT:
111 if (*rid >= ISA_NPORT)
112 return 0;
113 break;
114 default:
115 return 0;
116 }
1b000e91 117 resource_list_add(rl, type, *rid, start, end,
4f7fe8c7 118 count, cpuid);
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119 }
120 }
121
122 return resource_list_alloc(rl, bus, child, type, rid,
4f7fe8c7 123 start, end, count, flags, cpuid);
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124}
125
126int
127isa_release_resource(device_t bus, device_t child, int type, int rid,
128 struct resource *r)
129{
130 struct isa_device* idev = DEVTOISA(child);
131 struct resource_list *rl = &idev->id_resources;
132
133 return resource_list_release(rl, bus, child, type, rid, r);
134}
135
136/*
137 * We can't use the bus_generic_* versions of these methods because those
138 * methods always pass the bus param as the requesting device, and we need
139 * to pass the child (the i386 nexus knows about this and is prepared to
140 * deal).
141 */
142int
143isa_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
144 void (*ihand)(void *), void *arg,
145 void **cookiep, lwkt_serialize_t serializer)
146{
147 return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags,
0e6f0e28 148 ihand, arg, cookiep, serializer, NULL));
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149}
150
151int
152isa_teardown_intr(device_t bus, device_t child, struct resource *r,
153 void *cookie)
154{
155 return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie));
156}