[linux-2.6-block.git] / drivers / mmc / core / sdio_cis.c

/*
 * linux/drivers/mmc/core/sdio_cis.c
 *
 * Author:	Nicolas Pitre
 * Created:	June 11, 2007
 * Copyright:	MontaVista Software Inc.
 *
 * Copyright 2007 Pierre Ossman
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 */

#include <linux/kernel.h>

#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/mmc/sdio.h>
#include <linux/mmc/sdio_func.h>

#include "sdio_cis.h"
#include "sdio_ops.h"

static int cistpl_vers_1(struct mmc_card *card, struct sdio_func *func,
			 const unsigned char *buf, unsigned size)
{
	unsigned i, nr_strings;
	char **buffer, *string;

	/* Find all null-terminated (including zero length) strings in
	   the TPLLV1_INFO field. Trailing garbage is ignored. */
	buf += 2;
	size -= 2;

	nr_strings = 0;
	for (i = 0; i < size; i++) {
		if (buf[i] == 0xff)
			break;
		if (buf[i] == 0)
			nr_strings++;
	}
	if (nr_strings == 0)
		return 0;

	size = i;

	buffer = kzalloc(sizeof(char*) * nr_strings + size, GFP_KERNEL);
	if (!buffer)
		return -ENOMEM;

	string = (char*)(buffer + nr_strings);

	for (i = 0; i < nr_strings; i++) {
		buffer[i] = string;
		strcpy(string, buf);
		string += strlen(string) + 1;
		buf += strlen(buf) + 1;
	}

	if (func) {
		func->num_info = nr_strings;
		func->info = (const char**)buffer;
	} else {
		card->num_info = nr_strings;
		card->info = (const char**)buffer;
	}

	return 0;
}

static int cistpl_manfid(struct mmc_card *card, struct sdio_func *func,
			 const unsigned char *buf, unsigned size)
{
	unsigned int vendor, device;

	/* TPLMID_MANF */
	vendor = buf[0] | (buf[1] << 8);

	/* TPLMID_CARD */
	device = buf[2] | (buf[3] << 8);

	if (func) {
		func->vendor = vendor;
		func->device = device;
	} else {
		card->cis.vendor = vendor;
		card->cis.device = device;
	}

	return 0;
}

static const unsigned char speed_val[16] =
	{ 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 };
static const unsigned int speed_unit[8] =
	{ 10000, 100000, 1000000, 10000000, 0, 0, 0, 0 };


typedef int (tpl_parse_t)(struct mmc_card *, struct sdio_func *,
			   const unsigned char *, unsigned);

struct cis_tpl {
	unsigned char code;
	unsigned char min_size;
	tpl_parse_t *parse;
};

static int cis_tpl_parse(struct mmc_card *card, struct sdio_func *func,
			 const char *tpl_descr,
			 const struct cis_tpl *tpl, int tpl_count,
			 unsigned char code,
			 const unsigned char *buf, unsigned size)
{
	int i, ret;

	/* look for a matching code in the table */
	for (i = 0; i < tpl_count; i++, tpl++) {
		if (tpl->code == code)
			break;
	}
	if (i < tpl_count) {
		if (size >= tpl->min_size) {
			if (tpl->parse)
				ret = tpl->parse(card, func, buf, size);
			else
				ret = -EILSEQ;	/* known tuple, not parsed */
		} else {
			/* invalid tuple */
			ret = -EINVAL;
		}
		if (ret && ret != -EILSEQ && ret != -ENOENT) {
			printk(KERN_ERR "%s: bad %s tuple 0x%02x (%u bytes)\n",
			       mmc_hostname(card->host), tpl_descr, code, size);
		}
	} else {
		/* unknown tuple */
		ret = -ENOENT;
	}

	return ret;
}

static int cistpl_funce_common(struct mmc_card *card, struct sdio_func *func,
			       const unsigned char *buf, unsigned size)
{
	/* Only valid for the common CIS (function 0) */
	if (func)
		return -EINVAL;

	/* TPLFE_FN0_BLK_SIZE */
	card->cis.blksize = buf[1] | (buf[2] << 8);

	/* TPLFE_MAX_TRAN_SPEED */
	card->cis.max_dtr = speed_val[(buf[3] >> 3) & 15] *
			    speed_unit[buf[3] & 7];

	return 0;
}

static int cistpl_funce_func(struct mmc_card *card, struct sdio_func *func,
			     const unsigned char *buf, unsigned size)
{
	unsigned vsn;
	unsigned min_size;

	/* Only valid for the individual function's CIS (1-7) */
	if (!func)
		return -EINVAL;

	/*
	 * This tuple has a different length depending on the SDIO spec
	 * version.
	 */
	vsn = func->card->cccr.sdio_vsn;
	min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;

	if (size < min_size)
		return -EINVAL;

	/* TPLFE_MAX_BLK_SIZE */
	func->max_blksize = buf[12] | (buf[13] << 8);

	/* TPLFE_ENABLE_TIMEOUT_VAL, present in ver 1.1 and above */
	if (vsn > SDIO_SDIO_REV_1_00)
		func->enable_timeout = (buf[28] | (buf[29] << 8)) * 10;
	else
		func->enable_timeout = jiffies_to_msecs(HZ);

	return 0;
}

/*
 * Known TPLFE_TYPEs table for CISTPL_FUNCE tuples.
 *
 * Note that, unlike PCMCIA, CISTPL_FUNCE tuples are not parsed depending
 * on the TPLFID_FUNCTION value of the previous CISTPL_FUNCID as on SDIO
 * TPLFID_FUNCTION is always hardcoded to 0x0C.
 */
static const struct cis_tpl cis_tpl_funce_list[] = {
	{	0x00,	4,	cistpl_funce_common		},
	{	0x01,	0,	cistpl_funce_func		},
	{	0x04,	1+1+6,	/* CISTPL_FUNCE_LAN_NODE_ID */	},
};

static int cistpl_funce(struct mmc_card *card, struct sdio_func *func,
			const unsigned char *buf, unsigned size)
{
	if (size < 1)
		return -EINVAL;

	return cis_tpl_parse(card, func, "CISTPL_FUNCE",
			     cis_tpl_funce_list,
			     ARRAY_SIZE(cis_tpl_funce_list),
			     buf[0], buf, size);
}

/* Known TPL_CODEs table for CIS tuples */
static const struct cis_tpl cis_tpl_list[] = {
	{	0x15,	3,	cistpl_vers_1		},
	{	0x20,	4,	cistpl_manfid		},
	{	0x21,	2,	/* cistpl_funcid */	},
	{	0x22,	0,	cistpl_funce		},
};

static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
{
	int ret;
	struct sdio_func_tuple *this, **prev;
	unsigned i, ptr = 0;

	/*
	 * Note that this works for the common CIS (function number 0) as
	 * well as a function's CIS * since SDIO_CCCR_CIS and SDIO_FBR_CIS
	 * have the same offset.
	 */
	for (i = 0; i < 3; i++) {
		unsigned char x, fn;

		if (func)
			fn = func->num;
		else
			fn = 0;

		ret = mmc_io_rw_direct(card, 0, 0,
			SDIO_FBR_BASE(fn) + SDIO_FBR_CIS + i, 0, &x);
		if (ret)
			return ret;
		ptr |= x << (i * 8);
	}

	if (func)
		prev = &func->tuples;
	else
		prev = &card->tuples;

	BUG_ON(*prev);

	do {
		unsigned char tpl_code, tpl_link;

		ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_code);
		if (ret)
			break;

		/* 0xff means we're done */
		if (tpl_code == 0xff)
			break;

		/* null entries have no link field or data */
		if (tpl_code == 0x00)
			continue;

		ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
		if (ret)
			break;

		/* a size of 0xff also means we're done */
		if (tpl_link == 0xff)
			break;

		this = kmalloc(sizeof(*this) + tpl_link, GFP_KERNEL);
		if (!this)
			return -ENOMEM;

		for (i = 0; i < tpl_link; i++) {
			ret = mmc_io_rw_direct(card, 0, 0,
					       ptr + i, 0, &this->data[i]);
			if (ret)
				break;
		}
		if (ret) {
			kfree(this);
			break;
		}

		/* Try to parse the CIS tuple */
		ret = cis_tpl_parse(card, func, "CIS",
				    cis_tpl_list, ARRAY_SIZE(cis_tpl_list),
				    tpl_code, this->data, tpl_link);
		if (ret == -EILSEQ || ret == -ENOENT) {
			/*
			 * The tuple is unknown or known but not parsed.
			 * Queue the tuple for the function driver.
			 */
			this->next = NULL;
			this->code = tpl_code;
			this->size = tpl_link;
			*prev = this;
			prev = &this->next;

			if (ret == -ENOENT) {
				/* warn about unknown tuples */
				printk(KERN_WARNING "%s: queuing unknown"
				       " CIS tuple 0x%02x (%u bytes)\n",
				       mmc_hostname(card->host),
				       tpl_code, tpl_link);
			}

			/* keep on analyzing tuples */
			ret = 0;
		} else {
			/*
			 * We don't need the tuple anymore if it was
			 * successfully parsed by the SDIO core or if it is
			 * not going to be queued for a driver.
			 */
			kfree(this);
		}

		ptr += tpl_link;
	} while (!ret);

	/*
	 * Link in all unknown tuples found in the common CIS so that
	 * drivers don't have to go digging in two places.
	 */
	if (func)
		*prev = card->tuples;

	return ret;
}

int sdio_read_common_cis(struct mmc_card *card)
{
	return sdio_read_cis(card, NULL);
}

void sdio_free_common_cis(struct mmc_card *card)
{
	struct sdio_func_tuple *tuple, *victim;

	tuple = card->tuples;

	while (tuple) {
		victim = tuple;
		tuple = tuple->next;
		kfree(victim);
	}

	card->tuples = NULL;
}

int sdio_read_func_cis(struct sdio_func *func)
{
	int ret;

	ret = sdio_read_cis(func->card, func);
	if (ret)
		return ret;

	/*
	 * Since we've linked to tuples in the card structure,
	 * we must make sure we have a reference to it.
	 */
	get_device(&func->card->dev);

	/*
	 * Vendor/device id is optional for function CIS, so
	 * copy it from the card structure as needed.
	 */
	if (func->vendor == 0) {
		func->vendor = func->card->cis.vendor;
		func->device = func->card->cis.device;
	}

	return 0;
}

void sdio_free_func_cis(struct sdio_func *func)
{
	struct sdio_func_tuple *tuple, *victim;

	tuple = func->tuples;

	while (tuple && tuple != func->card->tuples) {
		victim = tuple;
		tuple = tuple->next;
		kfree(victim);
	}

	func->tuples = NULL;

	/*
	 * We have now removed the link to the tuples in the
	 * card structure, so remove the reference.
	 */
	put_device(&func->card->dev);
}
Commit	Line	Data
b7261261 NP	1	/*
	2	* linux/drivers/mmc/core/sdio_cis.c
	3	*
	4	* Author: Nicolas Pitre
	5	* Created: June 11, 2007
	6	* Copyright: MontaVista Software Inc.
	7	*
b1538bcf NP	8	* Copyright 2007 Pierre Ossman
b1538bcf NP	9	*
b7261261 NP	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or (at
	13	* your option) any later version.
	14	*/
	15
	16	#include <linux/kernel.h>
	17
	18	#include <linux/mmc/host.h>
1a632f8c	19	#include <linux/mmc/card.h>
b7261261 NP	20	#include <linux/mmc/sdio.h>
	21	#include <linux/mmc/sdio_func.h>
	22
	23	#include "sdio_cis.h"
	24	#include "sdio_ops.h"
	25
759bdc7a PO	26	static int cistpl_vers_1(struct mmc_card card, struct sdio_func func,
	27	const unsigned char *buf, unsigned size)
	28	{
	29	unsigned i, nr_strings;
	30	char *buffer, string;
	31
a1125b1e DV	32	/* Find all null-terminated (including zero length) strings in
a1125b1e DV	33	the TPLLV1_INFO field. Trailing garbage is ignored. */
759bdc7a PO	34	buf += 2;
	35	size -= 2;
	36
	37	nr_strings = 0;
	38	for (i = 0; i < size; i++) {
	39	if (buf[i] == 0xff)
	40	break;
	41	if (buf[i] == 0)
	42	nr_strings++;
	43	}
a1125b1e	44	if (nr_strings == 0)
759bdc7a	45	return 0;
759bdc7a PO	46
	47	size = i;
	48
	49	buffer = kzalloc(sizeof(char) nr_strings + size, GFP_KERNEL);
	50	if (!buffer)
	51	return -ENOMEM;
	52
	53	string = (char*)(buffer + nr_strings);
	54
	55	for (i = 0; i < nr_strings; i++) {
	56	buffer[i] = string;
	57	strcpy(string, buf);
	58	string += strlen(string) + 1;
	59	buf += strlen(buf) + 1;
	60	}
	61
	62	if (func) {
	63	func->num_info = nr_strings;
	64	func->info = (const char**)buffer;
	65	} else {
	66	card->num_info = nr_strings;
	67	card->info = (const char**)buffer;
	68	}
	69
	70	return 0;
	71	}
	72
1a632f8c PO	73	static int cistpl_manfid(struct mmc_card card, struct sdio_func func,
1a632f8c PO	74	const unsigned char *buf, unsigned size)
b7261261	75	{
1a632f8c PO	76	unsigned int vendor, device;
1a632f8c PO	77
b7261261	78	/* TPLMID_MANF */
1a632f8c	79	vendor = buf[0] \| (buf[1] << 8);
b7261261 NP	80
b7261261 NP	81	/* TPLMID_CARD */
1a632f8c PO	82	device = buf[2] \| (buf[3] << 8);
	83
	84	if (func) {
	85	func->vendor = vendor;
	86	func->device = device;
	87	} else {
	88	card->cis.vendor = vendor;
	89	card->cis.device = device;
	90	}
	91
	92	return 0;
	93	}
	94
	95	static const unsigned char speed_val[16] =
	96	{ 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 };
	97	static const unsigned int speed_unit[8] =
	98	{ 10000, 100000, 1000000, 10000000, 0, 0, 0, 0 };
	99
4ec64960 AH	100
	101	typedef int (tpl_parse_t)(struct mmc_card , struct sdio_func ,
	102	const unsigned char *, unsigned);
	103
	104	struct cis_tpl {
	105	unsigned char code;
	106	unsigned char min_size;
	107	tpl_parse_t *parse;
ed9935f4 AH	108	};
ed9935f4 AH	109
4ec64960 AH	110	static int cis_tpl_parse(struct mmc_card card, struct sdio_func func,
	111	const char *tpl_descr,
	112	const struct cis_tpl *tpl, int tpl_count,
	113	unsigned char code,
	114	const unsigned char *buf, unsigned size)
ed9935f4	115	{
4ec64960	116	int i, ret;
ed9935f4	117
4ec64960 AH	118	/* look for a matching code in the table */
	119	for (i = 0; i < tpl_count; i++, tpl++) {
	120	if (tpl->code == code)
	121	break;
ed9935f4	122	}
4ec64960 AH	123	if (i < tpl_count) {
	124	if (size >= tpl->min_size) {
	125	if (tpl->parse)
	126	ret = tpl->parse(card, func, buf, size);
	127	else
	128	ret = -EILSEQ; /* known tuple, not parsed */
	129	} else {
	130	/* invalid tuple */
	131	ret = -EINVAL;
	132	}
	133	if (ret && ret != -EILSEQ && ret != -ENOENT) {
	134	printk(KERN_ERR "%s: bad %s tuple 0x%02x (%u bytes)\n",
	135	mmc_hostname(card->host), tpl_descr, code, size);
	136	}
	137	} else {
	138	/* unknown tuple */
	139	ret = -ENOENT;
	140	}
	141
	142	return ret;
ed9935f4 AH	143	}
ed9935f4 AH	144
4ec64960	145	static int cistpl_funce_common(struct mmc_card card, struct sdio_func func,
1a632f8c PO	146	const unsigned char *buf, unsigned size)
1a632f8c PO	147	{
4ec64960 AH	148	/* Only valid for the common CIS (function 0) */
4ec64960 AH	149	if (func)
1a632f8c PO	150	return -EINVAL;
	151
	152	/* TPLFE_FN0_BLK_SIZE */
	153	card->cis.blksize = buf[1] \| (buf[2] << 8);
	154
	155	/* TPLFE_MAX_TRAN_SPEED */
	156	card->cis.max_dtr = speed_val[(buf[3] >> 3) & 15] *
	157	speed_unit[buf[3] & 7];
	158
	159	return 0;
	160	}
	161
4ec64960	162	static int cistpl_funce_func(struct mmc_card card, struct sdio_func func,
1a632f8c PO	163	const unsigned char *buf, unsigned size)
	164	{
	165	unsigned vsn;
	166	unsigned min_size;
	167
4ec64960 AH	168	/* Only valid for the individual function's CIS (1-7) */
	169	if (!func)
	170	return -EINVAL;
ed9935f4	171
4ec64960 AH	172	/*
	173	* This tuple has a different length depending on the SDIO spec
	174	* version.
	175	*/
1a632f8c PO	176	vsn = func->card->cccr.sdio_vsn;
	177	min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;
	178
4ec64960	179	if (size < min_size)
1a632f8c PO	180	return -EINVAL;
	181
	182	/* TPLFE_MAX_BLK_SIZE */
9a08f82b	183	func->max_blksize = buf[12] \| (buf[13] << 8);
b7261261	184
62a7573e BZ	185	/* TPLFE_ENABLE_TIMEOUT_VAL, present in ver 1.1 and above */
	186	if (vsn > SDIO_SDIO_REV_1_00)
	187	func->enable_timeout = (buf[28] \| (buf[29] << 8)) * 10;
	188	else
	189	func->enable_timeout = jiffies_to_msecs(HZ);
	190
b7261261 NP	191	return 0;
	192	}
	193
4ec64960 AH	194	/*
	195	* Known TPLFE_TYPEs table for CISTPL_FUNCE tuples.
	196	*
	197	* Note that, unlike PCMCIA, CISTPL_FUNCE tuples are not parsed depending
	198	* on the TPLFID_FUNCTION value of the previous CISTPL_FUNCID as on SDIO
	199	* TPLFID_FUNCTION is always hardcoded to 0x0C.
	200	*/
	201	static const struct cis_tpl cis_tpl_funce_list[] = {
	202	{ 0x00, 4, cistpl_funce_common },
	203	{ 0x01, 0, cistpl_funce_func },
	204	{ 0x04, 1+1+6, /* CISTPL_FUNCE_LAN_NODE_ID */ },
	205	};
	206
1a632f8c PO	207	static int cistpl_funce(struct mmc_card card, struct sdio_func func,
	208	const unsigned char *buf, unsigned size)
	209	{
4ec64960 AH	210	if (size < 1)
4ec64960 AH	211	return -EINVAL;
1a632f8c	212
4ec64960 AH	213	return cis_tpl_parse(card, func, "CISTPL_FUNCE",
	214	cis_tpl_funce_list,
	215	ARRAY_SIZE(cis_tpl_funce_list),
	216	buf[0], buf, size);
1a632f8c PO	217	}
1a632f8c PO	218
4ec64960	219	/* Known TPL_CODEs table for CIS tuples */
b7261261	220	static const struct cis_tpl cis_tpl_list[] = {
759bdc7a	221	{ 0x15, 3, cistpl_vers_1 },
b7261261 NP	222	{ 0x20, 4, cistpl_manfid },
b7261261 NP	223	{ 0x21, 2, /* cistpl_funcid */ },
1a632f8c	224	{ 0x22, 0, cistpl_funce },
b7261261 NP	225	};
b7261261 NP	226
1a632f8c	227	static int sdio_read_cis(struct mmc_card card, struct sdio_func func)
b7261261 NP	228	{
b7261261 NP	229	int ret;
b1538bcf	230	struct sdio_func_tuple this, *prev;
b7261261 NP	231	unsigned i, ptr = 0;
b7261261 NP	232
1a632f8c PO	233	/*
	234	* Note that this works for the common CIS (function number 0) as
	235	* well as a function's CIS * since SDIO_CCCR_CIS and SDIO_FBR_CIS
	236	* have the same offset.
	237	*/
b7261261	238	for (i = 0; i < 3; i++) {
1a632f8c PO	239	unsigned char x, fn;
	240
	241	if (func)
	242	fn = func->num;
	243	else
	244	fn = 0;
	245
	246	ret = mmc_io_rw_direct(card, 0, 0,
7616ee95	247	SDIO_FBR_BASE(fn) + SDIO_FBR_CIS + i, 0, &x);
b7261261 NP	248	if (ret)
	249	return ret;
	250	ptr \|= x << (i * 8);
	251	}
	252
1a632f8c PO	253	if (func)
	254	prev = &func->tuples;
	255	else
	256	prev = &card->tuples;
	257
	258	BUG_ON(*prev);
b7261261 NP	259
	260	do {
	261	unsigned char tpl_code, tpl_link;
b7261261	262
1a632f8c	263	ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_code);
b7261261 NP	264	if (ret)
	265	break;
	266
	267	/* 0xff means we're done */
	268	if (tpl_code == 0xff)
	269	break;
	270
c8d718f1 PO	271	/* null entries have no link field or data */
	272	if (tpl_code == 0x00)
	273	continue;
	274
1a632f8c	275	ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
b7261261 NP	276	if (ret)
	277	break;
	278
0d6132ba PO	279	/* a size of 0xff also means we're done */
	280	if (tpl_link == 0xff)
	281	break;
	282
b1538bcf NP	283	this = kmalloc(sizeof(*this) + tpl_link, GFP_KERNEL);
	284	if (!this)
	285	return -ENOMEM;
	286
	287	for (i = 0; i < tpl_link; i++) {
1a632f8c	288	ret = mmc_io_rw_direct(card, 0, 0,
b1538bcf NP	289	ptr + i, 0, &this->data[i]);
b1538bcf NP	290	if (ret)
b7261261	291	break;
b7261261	292	}
b1538bcf NP	293	if (ret) {
b1538bcf NP	294	kfree(this);
b7261261 NP	295	break;
	296	}
	297
4ec64960 AH	298	/* Try to parse the CIS tuple */
	299	ret = cis_tpl_parse(card, func, "CIS",
	300	cis_tpl_list, ARRAY_SIZE(cis_tpl_list),
	301	tpl_code, this->data, tpl_link);
	302	if (ret == -EILSEQ \|\| ret == -ENOENT) {
ed9935f4	303	/*
4ec64960 AH	304	* The tuple is unknown or known but not parsed.
4ec64960 AH	305	* Queue the tuple for the function driver.
ed9935f4	306	*/
ed9935f4 AH	307	this->next = NULL;
	308	this->code = tpl_code;
	309	this->size = tpl_link;
	310	*prev = this;
	311	prev = &this->next;
4ec64960 AH	312
	313	if (ret == -ENOENT) {
	314	/* warn about unknown tuples */
	315	printk(KERN_WARNING "%s: queuing unknown"
	316	" CIS tuple 0x%02x (%u bytes)\n",
	317	mmc_hostname(card->host),
	318	tpl_code, tpl_link);
	319	}
	320
ed9935f4 AH	321	/* keep on analyzing tuples */
ed9935f4 AH	322	ret = 0;
4ec64960 AH	323	} else {
	324	/*
	325	* We don't need the tuple anymore if it was
	326	* successfully parsed by the SDIO core or if it is
	327	* not going to be queued for a driver.
	328	*/
	329	kfree(this);
b7261261	330	}
b7261261	331
b1538bcf	332	ptr += tpl_link;
b7261261 NP	333	} while (!ret);
b7261261 NP	334
1a632f8c PO	335	/*
	336	* Link in all unknown tuples found in the common CIS so that
	337	* drivers don't have to go digging in two places.
	338	*/
	339	if (func)
	340	*prev = card->tuples;
	341
b7261261 NP	342	return ret;
b7261261 NP	343	}
b1538bcf	344
1a632f8c PO	345	int sdio_read_common_cis(struct mmc_card *card)
	346	{
	347	return sdio_read_cis(card, NULL);
	348	}
	349
	350	void sdio_free_common_cis(struct mmc_card *card)
b1538bcf NP	351	{
	352	struct sdio_func_tuple tuple, victim;
	353
1a632f8c	354	tuple = card->tuples;
b1538bcf NP	355
	356	while (tuple) {
	357	victim = tuple;
	358	tuple = tuple->next;
	359	kfree(victim);
	360	}
	361
1a632f8c PO	362	card->tuples = NULL;
	363	}
	364
	365	int sdio_read_func_cis(struct sdio_func *func)
	366	{
	367	int ret;
	368
	369	ret = sdio_read_cis(func->card, func);
	370	if (ret)
	371	return ret;
	372
	373	/*
	374	* Since we've linked to tuples in the card structure,
	375	* we must make sure we have a reference to it.
	376	*/
	377	get_device(&func->card->dev);
	378
	379	/*
	380	* Vendor/device id is optional for function CIS, so
	381	* copy it from the card structure as needed.
	382	*/
	383	if (func->vendor == 0) {
	384	func->vendor = func->card->cis.vendor;
	385	func->device = func->card->cis.device;
	386	}
	387
	388	return 0;
	389	}
	390
	391	void sdio_free_func_cis(struct sdio_func *func)
	392	{
	393	struct sdio_func_tuple tuple, victim;
	394
	395	tuple = func->tuples;
	396
	397	while (tuple && tuple != func->card->tuples) {
	398	victim = tuple;
	399	tuple = tuple->next;
	400	kfree(victim);
	401	}
	402
b1538bcf	403	func->tuples = NULL;
1a632f8c PO	404
	405	/*
	406	* We have now removed the link to the tuples in the
	407	* card structure, so remove the reference.
	408	*/
	409	put_device(&func->card->dev);
b1538bcf NP	410	}
b1538bcf NP	411