xref: /freebsd/sys/powerpc/mpc85xx/isa.c (revision 7aa383846770374466b1dcb2cefd71bde9acf463)
1 /*-
2  * Copyright (c) 2009 Marcel Moolenaar
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
18  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
20  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
21  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23  * SUCH DAMAGE.
24  */
25 
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
28 
29 #include <sys/param.h>
30 #include <sys/bus.h>
31 #include <sys/malloc.h>
32 #include <machine/bus.h>
33 #include <sys/rman.h>
34 
35 #include <machine/intr_machdep.h>
36 #include <machine/ocpbus.h>
37 #include <machine/resource.h>
38 
39 #include <isa/isareg.h>
40 #include <isa/isavar.h>
41 #include <isa/isa_common.h>
42 
43 #include "ocpbus.h"
44 
45 void
46 isa_init(device_t dev)
47 {
48 }
49 
50 struct resource *
51 isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
52     u_long start, u_long end, u_long count, u_int flags)
53 {
54 	struct isa_device* idev = DEVTOISA(child);
55 	struct resource_list *rl = &idev->id_resources;
56 	int isdefault, passthrough, rids;
57 
58 	isdefault = (start == 0UL && end == ~0UL) ? 1 : 0;
59 	passthrough = (device_get_parent(child) != bus) ? 1 : 0;
60 
61 	if (!passthrough && !isdefault &&
62 	    resource_list_find(rl, type, *rid) == NULL) {
63 		switch (type) {
64 		case SYS_RES_IOPORT:	rids = ISA_PNP_NPORT; break;
65 		case SYS_RES_IRQ:
66 			rids = ISA_PNP_NIRQ;
67 			start = ISA_IRQ(start);
68 			break;
69 		case SYS_RES_MEMORY:	rids = ISA_PNP_NMEM; break;
70 		default:		rids = 0; break;
71 		}
72 		if (*rid < 0 || *rid >= rids)
73 			return (NULL);
74 
75 		resource_list_add(rl, type, *rid, start, end, count);
76 	}
77 
78 	return (resource_list_alloc(rl, bus, child, type, rid, start, end,
79 	    count, flags));
80 }
81 
82 int
83 isa_release_resource(device_t bus, device_t child, int type, int rid,
84     struct resource *r)
85 {
86 	struct isa_device* idev = DEVTOISA(child);
87 	struct resource_list *rl = &idev->id_resources;
88 
89 	return (resource_list_release(rl, bus, child, type, rid, r));
90 }
91 
92 int
93 isa_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
94     driver_filter_t filter, void (*ihand)(void *), void *arg, void **cookiep)
95 {
96 
97 	return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags,
98 	    filter, ihand, arg, cookiep));
99 }
100 
101 int
102 isa_teardown_intr(device_t bus, device_t child, struct resource *r,
103     void *cookie)
104 {
105 
106 	return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie));
107 }
108