xref: /openbmc/linux/drivers/pcmcia/rsrc_mgr.c (revision 234489ac)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * rsrc_mgr.c -- Resource management routines and/or wrappers
4  *
5  * The initial developer of the original code is David A. Hinds
6  * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
7  * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
8  *
9  * (C) 1999		David A. Hinds
10  */
11 
12 #include <linux/slab.h>
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 
16 #include <pcmcia/ss.h>
17 #include <pcmcia/cistpl.h>
18 #include "cs_internal.h"
19 
20 int static_init(struct pcmcia_socket *s)
21 {
22 	/* the good thing about SS_CAP_STATIC_MAP sockets is
23 	 * that they don't need a resource database */
24 
25 	s->resource_setup_done = 1;
26 
27 	return 0;
28 }
29 
30 struct resource *pcmcia_make_resource(resource_size_t start,
31 					resource_size_t end,
32 					unsigned long flags, const char *name)
33 {
34 	struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
35 
36 	if (res) {
37 		res->name = name;
38 		res->start = start;
39 		res->end = start + end - 1;
40 		res->flags = flags;
41 	}
42 	return res;
43 }
44 
45 static int static_find_io(struct pcmcia_socket *s, unsigned int attr,
46 			unsigned int *base, unsigned int num,
47 			unsigned int align, struct resource **parent)
48 {
49 	if (!s->io_offset)
50 		return -EINVAL;
51 	*base = s->io_offset | (*base & 0x0fff);
52 	*parent = NULL;
53 
54 	return 0;
55 }
56 
57 
58 struct pccard_resource_ops pccard_static_ops = {
59 	.validate_mem = NULL,
60 	.find_io = static_find_io,
61 	.find_mem = NULL,
62 	.init = static_init,
63 	.exit = NULL,
64 };
65 EXPORT_SYMBOL(pccard_static_ops);
66 
67 
68 MODULE_AUTHOR("David A. Hinds, Dominik Brodowski");
69 MODULE_LICENSE("GPL");
70 MODULE_ALIAS("rsrc_nonstatic");
71