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 "cs_internal.h"
24 int pcmcia_validate_mem(struct pcmcia_socket *s)
26 if (s->resource_ops->validate_mem)
27 return s->resource_ops->validate_mem(s);
28 /* if there is no callback, we can assume that everything is OK */
31 EXPORT_SYMBOL(pcmcia_validate_mem);
33 int pcmcia_adjust_io_region(struct resource *res, unsigned long r_start,
34 unsigned long r_end, struct pcmcia_socket *s)
36 if (s->resource_ops->adjust_io_region)
37 return s->resource_ops->adjust_io_region(res, r_start, r_end, s);
40 EXPORT_SYMBOL(pcmcia_adjust_io_region);
42 struct resource *pcmcia_find_io_region(unsigned long base, int num,
43 unsigned long align, struct pcmcia_socket *s)
45 if (s->resource_ops->find_io)
46 return s->resource_ops->find_io(base, num, align, s);
49 EXPORT_SYMBOL(pcmcia_find_io_region);
51 struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
52 int low, struct pcmcia_socket *s)
54 if (s->resource_ops->find_mem)
55 return s->resource_ops->find_mem(base, num, align, low, s);
58 EXPORT_SYMBOL(pcmcia_find_mem_region);
60 void release_resource_db(struct pcmcia_socket *s)
62 if (s->resource_ops->exit)
63 s->resource_ops->exit(s);
67 static int static_init(struct pcmcia_socket *s)
71 /* the good thing about SS_CAP_STATIC_MAP sockets is
72 * that they don't need a resource database */
74 spin_lock_irqsave(&s->lock, flags);
75 s->resource_setup_done = 1;
76 spin_unlock_irqrestore(&s->lock, flags);
82 struct pccard_resource_ops pccard_static_ops = {
84 .adjust_io_region = NULL,
92 EXPORT_SYMBOL(pccard_static_ops);
95 #ifdef CONFIG_PCCARD_IODYN
97 static struct resource *
98 make_resource(unsigned long b, unsigned long n, int flags, char *name)
100 struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
105 res->end = b + n - 1;
111 struct pcmcia_align_data {
113 unsigned long offset;
116 static void pcmcia_align(void *align_data, struct resource *res,
117 unsigned long size, unsigned long align)
119 struct pcmcia_align_data *data = align_data;
122 start = (res->start & ~data->mask) + data->offset;
123 if (start < res->start)
124 start += data->mask + 1;
128 if (res->flags & IORESOURCE_IO) {
130 start = (start + 0x3ff) & ~0x3ff;
137 if (res->flags & IORESOURCE_IO) {
138 if ((res->start + size - 1) >= 1024)
139 res->start = res->end;
145 static int iodyn_adjust_io_region(struct resource *res, unsigned long r_start,
146 unsigned long r_end, struct pcmcia_socket *s)
148 return adjust_resource(res, r_start, r_end - r_start + 1);
152 static struct resource *iodyn_find_io_region(unsigned long base, int num,
153 unsigned long align, struct pcmcia_socket *s)
155 struct resource *res = make_resource(0, num, IORESOURCE_IO,
157 struct pcmcia_align_data data;
158 unsigned long min = base;
164 data.mask = align - 1;
165 data.offset = base & data.mask;
169 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
170 min, 0, pcmcia_align, &data);
173 ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
174 1, pcmcia_align, &data);
183 struct pccard_resource_ops pccard_iodyn_ops = {
184 .validate_mem = NULL,
185 .adjust_io_region = iodyn_adjust_io_region,
186 .find_io = iodyn_find_io_region,
193 EXPORT_SYMBOL(pccard_iodyn_ops);
195 #endif /* CONFIG_PCCARD_IODYN */