[linux-block.git] / drivers / pcmcia / rsrc_mgr.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"

static 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 pccard_resource_ops pccard_static_ops = {
	.validate_mem = NULL,
	.adjust_io_region = NULL,
	.find_io = NULL,
	.find_mem = NULL,
	.add_io = NULL,
	.add_mem = NULL,
	.init = static_init,
	.exit = NULL,
};
EXPORT_SYMBOL(pccard_static_ops);


#ifdef CONFIG_PCCARD_IODYN

static struct resource *
make_resource(unsigned long b, unsigned long n, int flags, char *name)
{
	struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);

	if (res) {
		res->name = name;
		res->start = b;
		res->end = b + n - 1;
		res->flags = flags;
	}
	return res;
}

struct pcmcia_align_data {
	unsigned long	mask;
	unsigned long	offset;
};

static resource_size_t pcmcia_align(void *align_data,
				const struct resource *res,
				resource_size_t size, resource_size_t align)
{
	struct pcmcia_align_data *data = align_data;
	resource_size_t start;

	start = (res->start & ~data->mask) + data->offset;
	if (start < res->start)
		start += data->mask + 1;

#ifdef CONFIG_X86
	if (res->flags & IORESOURCE_IO) {
		if (start & 0x300)
			start = (start + 0x3ff) & ~0x3ff;
	}
#endif

#ifdef CONFIG_M68K
	if (res->flags & IORESOURCE_IO) {
		if ((res->start + size - 1) >= 1024)
			start = res->end;
	}
#endif

	return start;
}


static int iodyn_adjust_io_region(struct resource *res, unsigned long r_start,
				      unsigned long r_end, struct pcmcia_socket *s)
{
	return adjust_resource(res, r_start, r_end - r_start + 1);
}


static struct resource *iodyn_find_io_region(unsigned long base, int num,
		unsigned long align, struct pcmcia_socket *s)
{
	struct resource *res = make_resource(0, num, IORESOURCE_IO,
					     dev_name(&s->dev));
	struct pcmcia_align_data data;
	unsigned long min = base;
	int ret;

	if (align == 0)
		align = 0x10000;

	data.mask = align - 1;
	data.offset = base & data.mask;

#ifdef CONFIG_PCI
	if (s->cb_dev) {
		ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
					     min, 0, pcmcia_align, &data);
	} else
#endif
		ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
					1, pcmcia_align, &data);

	if (ret != 0) {
		kfree(res);
		res = NULL;
	}
	return res;
}

struct pccard_resource_ops pccard_iodyn_ops = {
	.validate_mem = NULL,
	.adjust_io_region = iodyn_adjust_io_region,
	.find_io = iodyn_find_io_region,
	.find_mem = NULL,
	.add_io = NULL,
	.add_mem = NULL,
	.init = static_init,
	.exit = NULL,
};
EXPORT_SYMBOL(pccard_iodyn_ops);

#endif /* CONFIG_PCCARD_IODYN */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* rsrc_mgr.c -- Resource management routines and/or wrappers
	3	*
	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.
	7	*
	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.
	11	*
	12	* (C) 1999 David A. Hinds
	13	*/
	14
5a0e3ad6	15	#include <linux/slab.h>
1da177e4 LT	16	#include <linux/module.h>
	17	#include <linux/kernel.h>
	18
	19	#include <pcmcia/cs_types.h>
	20	#include <pcmcia/ss.h>
	21	#include <pcmcia/cs.h>
91284224	22	#include <pcmcia/cistpl.h>
1da177e4 LT	23	#include "cs_internal.h"
1da177e4 LT	24
1da177e4 LT	25	static int static_init(struct pcmcia_socket *s)
1da177e4 LT	26	{
1da177e4 LT	27	/* the good thing about SS_CAP_STATIC_MAP sockets is
	28	* that they don't need a resource database */
	29
1da177e4	30	s->resource_setup_done = 1;
1da177e4 LT	31
	32	return 0;
	33	}
	34
	35
	36	struct pccard_resource_ops pccard_static_ops = {
	37	.validate_mem = NULL,
	38	.adjust_io_region = NULL,
	39	.find_io = NULL,
	40	.find_mem = NULL,
c5023801 DB	41	.add_io = NULL,
c5023801 DB	42	.add_mem = NULL,
1da177e4 LT	43	.init = static_init,
	44	.exit = NULL,
	45	};
	46	EXPORT_SYMBOL(pccard_static_ops);
3b27e942 DB	47
	48
	49	#ifdef CONFIG_PCCARD_IODYN
	50
	51	static struct resource *
	52	make_resource(unsigned long b, unsigned long n, int flags, char *name)
	53	{
	54	struct resource res = kzalloc(sizeof(res), GFP_KERNEL);
	55
	56	if (res) {
	57	res->name = name;
	58	res->start = b;
	59	res->end = b + n - 1;
	60	res->flags = flags;
	61	}
	62	return res;
	63	}
	64
	65	struct pcmcia_align_data {
	66	unsigned long mask;
	67	unsigned long offset;
	68	};
	69
3b7a17fc DB	70	static resource_size_t pcmcia_align(void *align_data,
3b7a17fc DB	71	const struct resource *res,
b26b2d49	72	resource_size_t size, resource_size_t align)
3b27e942 DB	73	{
3b27e942 DB	74	struct pcmcia_align_data *data = align_data;
b26b2d49	75	resource_size_t start;
3b27e942 DB	76
	77	start = (res->start & ~data->mask) + data->offset;
	78	if (start < res->start)
	79	start += data->mask + 1;
3b27e942 DB	80
3b27e942 DB	81	#ifdef CONFIG_X86
9fea84f4	82	if (res->flags & IORESOURCE_IO) {
6e83ee07	83	if (start & 0x300)
9fea84f4	84	start = (start + 0x3ff) & ~0x3ff;
9fea84f4	85	}
3b27e942 DB	86	#endif
	87
	88	#ifdef CONFIG_M68K
9fea84f4	89	if (res->flags & IORESOURCE_IO) {
3b27e942	90	if ((res->start + size - 1) >= 1024)
b26b2d49	91	start = res->end;
3b27e942 DB	92	}
3b27e942 DB	93	#endif
b26b2d49 DB	94
b26b2d49 DB	95	return start;
3b27e942 DB	96	}
	97
	98
	99	static int iodyn_adjust_io_region(struct resource *res, unsigned long r_start,
	100	unsigned long r_end, struct pcmcia_socket *s)
	101	{
	102	return adjust_resource(res, r_start, r_end - r_start + 1);
	103	}
	104
	105
	106	static struct resource *iodyn_find_io_region(unsigned long base, int num,
	107	unsigned long align, struct pcmcia_socket *s)
	108	{
	109	struct resource *res = make_resource(0, num, IORESOURCE_IO,
f2fecec5	110	dev_name(&s->dev));
3b27e942 DB	111	struct pcmcia_align_data data;
	112	unsigned long min = base;
	113	int ret;
	114
	115	if (align == 0)
	116	align = 0x10000;
	117
	118	data.mask = align - 1;
	119	data.offset = base & data.mask;
	120
	121	#ifdef CONFIG_PCI
	122	if (s->cb_dev) {
	123	ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
	124	min, 0, pcmcia_align, &data);
	125	} else
	126	#endif
	127	ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
	128	1, pcmcia_align, &data);
	129
	130	if (ret != 0) {
	131	kfree(res);
	132	res = NULL;
	133	}
	134	return res;
	135	}
	136
	137	struct pccard_resource_ops pccard_iodyn_ops = {
	138	.validate_mem = NULL,
	139	.adjust_io_region = iodyn_adjust_io_region,
	140	.find_io = iodyn_find_io_region,
	141	.find_mem = NULL,
c5023801 DB	142	.add_io = NULL,
c5023801 DB	143	.add_mem = NULL,
3b27e942 DB	144	.init = static_init,
	145	.exit = NULL,
	146	};
	147	EXPORT_SYMBOL(pccard_iodyn_ops);
	148
	149	#endif /* CONFIG_PCCARD_IODYN */