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 int pcmcia_adjust_io_region(struct resource *res, unsigned long r_start,
35 unsigned long r_end, struct pcmcia_socket *s)
37 if (s->resource_ops->adjust_io_region)
38 return s->resource_ops->adjust_io_region(res, r_start, r_end, s);
41 EXPORT_SYMBOL(pcmcia_adjust_io_region);
43 struct resource *pcmcia_find_io_region(unsigned long base, int num,
44 unsigned long align, struct pcmcia_socket *s)
46 if (s->resource_ops->find_io)
47 return s->resource_ops->find_io(base, num, align, s);
50 EXPORT_SYMBOL(pcmcia_find_io_region);
52 struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
53 int low, struct pcmcia_socket *s)
55 if (s->resource_ops->find_mem)
56 return s->resource_ops->find_mem(base, num, align, low, s);
59 EXPORT_SYMBOL(pcmcia_find_mem_region);
62 static int static_init(struct pcmcia_socket *s)
66 /* the good thing about SS_CAP_STATIC_MAP sockets is
67 * that they don't need a resource database */
69 spin_lock_irqsave(&s->lock, flags);
70 s->resource_setup_done = 1;
71 spin_unlock_irqrestore(&s->lock, flags);
77 struct pccard_resource_ops pccard_static_ops = {
79 .adjust_io_region = NULL,
87 EXPORT_SYMBOL(pccard_static_ops);
90 #ifdef CONFIG_PCCARD_IODYN
92 static struct resource *
93 make_resource(unsigned long b, unsigned long n, int flags, char *name)
95 struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
100 res->end = b + n - 1;
106 struct pcmcia_align_data {
108 unsigned long offset;
111 static void pcmcia_align(void *align_data, struct resource *res,
112 unsigned long size, unsigned long align)
114 struct pcmcia_align_data *data = align_data;
117 start = (res->start & ~data->mask) + data->offset;
118 if (start < res->start)
119 start += data->mask + 1;
123 if (res->flags & IORESOURCE_IO) {
125 start = (start + 0x3ff) & ~0x3ff;
132 if (res->flags & IORESOURCE_IO) {
133 if ((res->start + size - 1) >= 1024)
134 res->start = res->end;
140 static int iodyn_adjust_io_region(struct resource *res, unsigned long r_start,
141 unsigned long r_end, struct pcmcia_socket *s)
143 return adjust_resource(res, r_start, r_end - r_start + 1);
147 static struct resource *iodyn_find_io_region(unsigned long base, int num,
148 unsigned long align, struct pcmcia_socket *s)
150 struct resource *res = make_resource(0, num, IORESOURCE_IO,
152 struct pcmcia_align_data data;
153 unsigned long min = base;
159 data.mask = align - 1;
160 data.offset = base & data.mask;
164 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
165 min, 0, pcmcia_align, &data);
168 ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
169 1, pcmcia_align, &data);
178 struct pccard_resource_ops pccard_iodyn_ops = {
179 .validate_mem = NULL,
180 .adjust_io_region = iodyn_adjust_io_region,
181 .find_io = iodyn_find_io_region,
188 EXPORT_SYMBOL(pccard_iodyn_ops);
190 #endif /* CONFIG_PCCARD_IODYN */