linux/drivers/pcmcia/rsrc_mgr.c
Dominik Brodowski b19a7275de pcmcia: clarify alloc_io_space, move it to resource handlers
Clean up the alloc_io_space() function by moving most of it to
the actual resource_ops. This allows for a bit less re-directions.
Future cleanups will follow, and will make up for the code
duplication currently present between rsrc_iodyn and rsrc_nonstatic
(which are hardly ever built at the same time anyway, therefore no
increase in built size).

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2010-05-10 10:23:19 +02:00

76 lines
1.7 KiB
C

/*
* rsrc_mgr.c -- Resource management routines and/or wrappers
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The initial developer of the original code is David A. Hinds
* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
*
* (C) 1999 David A. Hinds
*/
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/ss.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include "cs_internal.h"
int static_init(struct pcmcia_socket *s)
{
/* the good thing about SS_CAP_STATIC_MAP sockets is
* that they don't need a resource database */
s->resource_setup_done = 1;
return 0;
}
struct resource *pcmcia_make_resource(unsigned long start, unsigned long end,
int flags, const char *name)
{
struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
if (res) {
res->name = name;
res->start = start;
res->end = start + end - 1;
res->flags = flags;
}
return res;
}
static int static_find_io(struct pcmcia_socket *s, unsigned int attr,
unsigned int *base, unsigned int num,
unsigned int align)
{
if (!s->io_offset)
return -EINVAL;
*base = s->io_offset | (*base & 0x0fff);
return 0;
}
struct pccard_resource_ops pccard_static_ops = {
.validate_mem = NULL,
.find_io = static_find_io,
.find_mem = NULL,
.add_io = NULL,
.add_mem = NULL,
.init = static_init,
.exit = NULL,
};
EXPORT_SYMBOL(pccard_static_ops);
MODULE_AUTHOR("David A. Hinds, Dominik Brodowski");
MODULE_LICENSE("GPL");
MODULE_ALIAS("rsrc_nonstatic");