[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / ide / arm / rapide.c

/*
 * linux/drivers/ide/arm/rapide.c
 *
 * Copyright (c) 1996-2002 Russell King.
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/errno.h>
#include <linux/ide.h>
#include <linux/init.h>

#include <asm/ecard.h>

/*
 * Something like this really should be in generic code, but isn't.
 */
static ide_hwif_t *
rapide_locate_hwif(void __iomem *base, void __iomem *ctrl, unsigned int sz, int irq)
{
	unsigned long port = (unsigned long)base;
	ide_hwif_t *hwif;
	int index, i;

	for (index = 0; index < MAX_HWIFS; ++index) {
		hwif = ide_hwifs + index;
		if (hwif->io_ports[IDE_DATA_OFFSET] == port)
			goto found;
	}

	for (index = 0; index < MAX_HWIFS; ++index) {
		hwif = ide_hwifs + index;
		if (hwif->io_ports[IDE_DATA_OFFSET] == 0)
			goto found;
	}

	return NULL;

 found:
	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
		hwif->hw.io_ports[i] = port;
		hwif->io_ports[i] = port;
		port += sz;
	}
	hwif->hw.io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
	hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
	hwif->hw.irq = hwif->irq = irq;
	hwif->mmio = 1;
	default_hwif_mmiops(hwif);

	return hwif;
}

static int __devinit
rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
{
	ide_hwif_t *hwif;
	void __iomem *base;
	int ret;
	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };

	ret = ecard_request_resources(ec);
	if (ret)
		goto out;

	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
	if (!base) {
		ret = -ENOMEM;
		goto release;
	}

	hwif = rapide_locate_hwif(base, base + 0x818, 1 << 6, ec->irq);
	if (hwif) {
		hwif->hwif_data = base;
		hwif->gendev.parent = &ec->dev;
		hwif->noprobe = 0;

		idx[0] = hwif->index;

		ide_device_add(idx);

		ecard_set_drvdata(ec, hwif);
		goto out;
	}

 release:
	ecard_release_resources(ec);
 out:
	return ret;
}

static void __devexit rapide_remove(struct expansion_card *ec)
{
	ide_hwif_t *hwif = ecard_get_drvdata(ec);

	ecard_set_drvdata(ec, NULL);

	/* there must be a better way */
	ide_unregister(hwif - ide_hwifs);
	ecard_release_resources(ec);
}

static struct ecard_id rapide_ids[] = {
	{ MANU_YELLOWSTONE, PROD_YELLOWSTONE_RAPIDE32 },
	{ 0xffff, 0xffff }
};

static struct ecard_driver rapide_driver = {
	.probe		= rapide_probe,
	.remove		= __devexit_p(rapide_remove),
	.id_table	= rapide_ids,
	.drv = {
		.name	= "rapide",
	},
};

static int __init rapide_init(void)
{
	return ecard_register_driver(&rapide_driver);
}

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Yellowstone RAPIDE driver");

module_init(rapide_init);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/drivers/ide/arm/rapide.c
	3	*
	4	* Copyright (c) 1996-2002 Russell King.
	5	*/
	6
	7	#include <linux/module.h>
	8	#include <linux/slab.h>
	9	#include <linux/blkdev.h>
	10	#include <linux/errno.h>
	11	#include <linux/ide.h>
	12	#include <linux/init.h>
	13
	14	#include <asm/ecard.h>
	15
	16	/*
	17	* Something like this really should be in generic code, but isn't.
	18	*/
	19	static ide_hwif_t *
	20	rapide_locate_hwif(void __iomem base, void __iomem ctrl, unsigned int sz, int irq)
	21	{
	22	unsigned long port = (unsigned long)base;
	23	ide_hwif_t *hwif;
	24	int index, i;
	25
	26	for (index = 0; index < MAX_HWIFS; ++index) {
	27	hwif = ide_hwifs + index;
	28	if (hwif->io_ports[IDE_DATA_OFFSET] == port)
	29	goto found;
	30	}
	31
	32	for (index = 0; index < MAX_HWIFS; ++index) {
	33	hwif = ide_hwifs + index;
	34	if (hwif->io_ports[IDE_DATA_OFFSET] == 0)
	35	goto found;
	36	}
	37
	38	return NULL;
	39
	40	found:
	41	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
	42	hwif->hw.io_ports[i] = port;
	43	hwif->io_ports[i] = port;
	44	port += sz;
	45	}
	46	hwif->hw.io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
	47	hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
	48	hwif->hw.irq = hwif->irq = irq;
2ad1e558	49	hwif->mmio = 1;
1da177e4 LT	50	default_hwif_mmiops(hwif);
	51
	52	return hwif;
	53	}
	54
	55	static int __devinit
	56	rapide_probe(struct expansion_card ec, const struct ecard_id id)
	57	{
	58	ide_hwif_t *hwif;
	59	void __iomem *base;
	60	int ret;
8447d9d5	61	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
1da177e4 LT	62
	63	ret = ecard_request_resources(ec);
	64	if (ret)
	65	goto out;
	66
10bdaaa0	67	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
1da177e4 LT	68	if (!base) {
	69	ret = -ENOMEM;
	70	goto release;
	71	}
	72
	73	hwif = rapide_locate_hwif(base, base + 0x818, 1 << 6, ec->irq);
	74	if (hwif) {
	75	hwif->hwif_data = base;
	76	hwif->gendev.parent = &ec->dev;
	77	hwif->noprobe = 0;
8447d9d5 BZ	78
	79	idx[0] = hwif->index;
	80
	81	ide_device_add(idx);
	82
1da177e4 LT	83	ecard_set_drvdata(ec, hwif);
	84	goto out;
	85	}
	86
1da177e4 LT	87	release:
	88	ecard_release_resources(ec);
	89	out:
	90	return ret;
	91	}
	92
	93	static void __devexit rapide_remove(struct expansion_card *ec)
	94	{
	95	ide_hwif_t *hwif = ecard_get_drvdata(ec);
	96
	97	ecard_set_drvdata(ec, NULL);
	98
	99	/* there must be a better way */
	100	ide_unregister(hwif - ide_hwifs);
1da177e4 LT	101	ecard_release_resources(ec);
	102	}
	103
	104	static struct ecard_id rapide_ids[] = {
	105	{ MANU_YELLOWSTONE, PROD_YELLOWSTONE_RAPIDE32 },
	106	{ 0xffff, 0xffff }
	107	};
	108
	109	static struct ecard_driver rapide_driver = {
	110	.probe = rapide_probe,
	111	.remove = __devexit_p(rapide_remove),
	112	.id_table = rapide_ids,
	113	.drv = {
	114	.name = "rapide",
	115	},
	116	};
	117
	118	static int __init rapide_init(void)
	119	{
	120	return ecard_register_driver(&rapide_driver);
	121	}
	122
	123	MODULE_LICENSE("GPL");
	124	MODULE_DESCRIPTION("Yellowstone RAPIDE driver");
	125
	126	module_init(rapide_init);