2 * rsrc_iodyn.c -- Resource management routines for MEM-static sockets.
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 struct pcmcia_align_data {
30 static resource_size_t pcmcia_align(void *align_data,
31 const struct resource *res,
32 resource_size_t size, resource_size_t align)
34 struct pcmcia_align_data *data = align_data;
35 resource_size_t start;
37 start = (res->start & ~data->mask) + data->offset;
38 if (start < res->start)
39 start += data->mask + 1;
42 if (res->flags & IORESOURCE_IO) {
44 start = (start + 0x3ff) & ~0x3ff;
49 if (res->flags & IORESOURCE_IO) {
50 if ((res->start + size - 1) >= 1024)
59 static int iodyn_adjust_io_region(struct resource *res, unsigned long r_start,
60 unsigned long r_end, struct pcmcia_socket *s)
62 return adjust_resource(res, r_start, r_end - r_start + 1);
66 static struct resource *iodyn_find_io_region(unsigned long base, int num,
67 unsigned long align, struct pcmcia_socket *s)
69 struct resource *res = pcmcia_make_resource(0, num, IORESOURCE_IO,
71 struct pcmcia_align_data data;
72 unsigned long min = base;
78 data.mask = align - 1;
79 data.offset = base & data.mask;
83 ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
84 min, 0, pcmcia_align, &data);
87 ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
88 1, pcmcia_align, &data);
97 struct pccard_resource_ops pccard_iodyn_ops = {
99 .adjust_io_region = iodyn_adjust_io_region,
100 .find_io = iodyn_find_io_region,
107 EXPORT_SYMBOL(pccard_iodyn_ops);