1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2009 Marcel Moolenaar
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/param.h>
29 #include <sys/bus.h>
30 #include <sys/malloc.h>
31 #include <machine/bus.h>
32 #include <sys/rman.h>
33
34 #include <machine/intr_machdep.h>
35 #include <machine/resource.h>
36
37 #include <isa/isareg.h>
38 #include <isa/isavar.h>
39 #include <isa/isa_common.h>
40
41 void
isa_init(device_t dev)42 isa_init(device_t dev)
43 {
44 }
45
46 struct resource *
isa_alloc_resource(device_t bus,device_t child,int type,int * rid,u_long start,u_long end,u_long count,u_int flags)47 isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
48 u_long start, u_long end, u_long count, u_int flags)
49 {
50 struct isa_device* idev = DEVTOISA(child);
51 struct resource_list *rl = &idev->id_resources;
52 int isdefault, passthrough, rids;
53
54 isdefault = RMAN_IS_DEFAULT_RANGE(start, end) ? 1 : 0;
55 passthrough = (device_get_parent(child) != bus) ? 1 : 0;
56
57 if (!passthrough && !isdefault &&
58 resource_list_find(rl, type, *rid) == NULL) {
59 switch (type) {
60 case SYS_RES_IOPORT: rids = ISA_PNP_NPORT; break;
61 case SYS_RES_IRQ: rids = ISA_PNP_NIRQ; break;
62 case SYS_RES_MEMORY: rids = ISA_PNP_NMEM; break;
63 default: rids = 0; break;
64 }
65 if (*rid < 0 || *rid >= rids)
66 return (NULL);
67
68 resource_list_add(rl, type, *rid, start, end, count);
69 }
70
71 return (resource_list_alloc(rl, bus, child, type, rid, start, end,
72 count, flags));
73 }
74
75 int
isa_release_resource(device_t bus,device_t child,struct resource * r)76 isa_release_resource(device_t bus, device_t child, struct resource *r)
77 {
78 struct isa_device* idev = DEVTOISA(child);
79 struct resource_list *rl = &idev->id_resources;
80
81 return (resource_list_release(rl, bus, child, r));
82 }
83