2 * rsrc_mgr.c -- Resource management routines and/or wrappers
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * The initial developer of the original code is David A. Hinds
9 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
10 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
12 * (C) 1999 David A. Hinds
15 #include <linux/module.h>
16 #include <linux/kernel.h>
18 #include <pcmcia/cs_types.h>
19 #include <pcmcia/ss.h>
20 #include <pcmcia/cs.h>
21 #include <pcmcia/cistpl.h>
22 #include "cs_internal.h"
25 int pcmcia_validate_mem(struct pcmcia_socket *s)
27 if (s->resource_ops->validate_mem)
28 return s->resource_ops->validate_mem(s);
29 /* if there is no callback, we can assume that everything is OK */
32 EXPORT_SYMBOL(pcmcia_validate_mem);
34 struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
35 int low, struct pcmcia_socket *s)
37 if (s->resource_ops->find_mem)
38 return s->resource_ops->find_mem(base, num, align, low, s);
41 EXPORT_SYMBOL(pcmcia_find_mem_region);
44 static int static_init(struct pcmcia_socket *s)
48 /* the good thing about SS_CAP_STATIC_MAP sockets is
49 * that they don't need a resource database */
51 spin_lock_irqsave(&s->lock, flags);
52 s->resource_setup_done = 1;
53 spin_unlock_irqrestore(&s->lock, flags);
59 struct pccard_resource_ops pccard_static_ops = {
61 .adjust_io_region = NULL,
69 EXPORT_SYMBOL(pccard_static_ops);
72 #ifdef CONFIG_PCCARD_IODYN
74 static struct resource *
75 make_resource(unsigned long b, unsigned long n, int flags, char *name)
77 struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
88 struct pcmcia_align_data {
93 static void pcmcia_align(void *align_data, struct resource *res,
94 unsigned long size, unsigned long align)
96 struct pcmcia_align_data *data = align_data;
99 start = (res->start & ~data->mask) + data->offset;
100 if (start < res->start)
101 start += data->mask + 1;
105 if (res->flags & IORESOURCE_IO) {
107 start = (start + 0x3ff) & ~0x3ff;
114 if (res->flags & IORESOURCE_IO) {
115 if ((res->start + size - 1) >= 1024)
116 res->start = res->end;
122 static int iodyn_adjust_io_region(struct resource *res, unsigned long r_start,
123 unsigned long r_end, struct pcmcia_socket *s)
125 return adjust_resource(res, r_start, r_end - r_start + 1);
129 static struct resource *iodyn_find_io_region(unsigned long base, int num,
130 unsigned long align, struct pcmcia_socket *s)
132 struct resource *res = make_resource(0, num, IORESOURCE_IO,
134 struct pcmcia_align_data data;
135 unsigned long min = base;
141 data.mask = align - 1;
142 data.offset = base & data.mask;
146 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
147 min, 0, pcmcia_align, &data);
150 ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
151 1, pcmcia_align, &data);
160 struct pccard_resource_ops pccard_iodyn_ops = {
161 .validate_mem = NULL,
162 .adjust_io_region = iodyn_adjust_io_region,
163 .find_io = iodyn_find_io_region,
170 EXPORT_SYMBOL(pccard_iodyn_ops);
172 #endif /* CONFIG_PCCARD_IODYN */