[linux-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/slab.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>
5a0e3ad6	17	#include <linux/slab.h>
b7261261 NP	18
b7261261 NP	19	#include <linux/mmc/host.h>
1a632f8c	20	#include <linux/mmc/card.h>
b7261261 NP	21	#include <linux/mmc/sdio.h>
	22	#include <linux/mmc/sdio_func.h>
	23
	24	#include "sdio_cis.h"
	25	#include "sdio_ops.h"
	26
759bdc7a PO	27	static int cistpl_vers_1(struct mmc_card card, struct sdio_func func,
	28	const unsigned char *buf, unsigned size)
	29	{
	30	unsigned i, nr_strings;
	31	char *buffer, string;
	32
a1125b1e DV	33	/* Find all null-terminated (including zero length) strings in
a1125b1e DV	34	the TPLLV1_INFO field. Trailing garbage is ignored. */
759bdc7a PO	35	buf += 2;
	36	size -= 2;
	37
	38	nr_strings = 0;
	39	for (i = 0; i < size; i++) {
	40	if (buf[i] == 0xff)
	41	break;
	42	if (buf[i] == 0)
	43	nr_strings++;
	44	}
a1125b1e	45	if (nr_strings == 0)
759bdc7a	46	return 0;
759bdc7a PO	47
	48	size = i;
	49
	50	buffer = kzalloc(sizeof(char) nr_strings + size, GFP_KERNEL);
	51	if (!buffer)
	52	return -ENOMEM;
	53
	54	string = (char*)(buffer + nr_strings);
	55
	56	for (i = 0; i < nr_strings; i++) {
	57	buffer[i] = string;
	58	strcpy(string, buf);
	59	string += strlen(string) + 1;
	60	buf += strlen(buf) + 1;
	61	}
	62
	63	if (func) {
	64	func->num_info = nr_strings;
	65	func->info = (const char**)buffer;
	66	} else {
	67	card->num_info = nr_strings;
	68	card->info = (const char**)buffer;
	69	}
	70
	71	return 0;
	72	}
	73
1a632f8c PO	74	static int cistpl_manfid(struct mmc_card card, struct sdio_func func,
1a632f8c PO	75	const unsigned char *buf, unsigned size)
b7261261	76	{
1a632f8c PO	77	unsigned int vendor, device;
1a632f8c PO	78
b7261261	79	/* TPLMID_MANF */
1a632f8c	80	vendor = buf[0] \| (buf[1] << 8);
b7261261 NP	81
b7261261 NP	82	/* TPLMID_CARD */
1a632f8c PO	83	device = buf[2] \| (buf[3] << 8);
	84
	85	if (func) {
	86	func->vendor = vendor;
	87	func->device = device;
	88	} else {
	89	card->cis.vendor = vendor;
	90	card->cis.device = device;
	91	}
	92
	93	return 0;
	94	}
	95
	96	static const unsigned char speed_val[16] =
	97	{ 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 };
	98	static const unsigned int speed_unit[8] =
	99	{ 10000, 100000, 1000000, 10000000, 0, 0, 0, 0 };
	100
4ec64960 AH	101
	102	typedef int (tpl_parse_t)(struct mmc_card , struct sdio_func ,
	103	const unsigned char *, unsigned);
	104
	105	struct cis_tpl {
	106	unsigned char code;
	107	unsigned char min_size;
	108	tpl_parse_t *parse;
ed9935f4 AH	109	};
ed9935f4 AH	110
4ec64960 AH	111	static int cis_tpl_parse(struct mmc_card card, struct sdio_func func,
	112	const char *tpl_descr,
	113	const struct cis_tpl *tpl, int tpl_count,
	114	unsigned char code,
	115	const unsigned char *buf, unsigned size)
ed9935f4	116	{
4ec64960	117	int i, ret;
ed9935f4	118
4ec64960 AH	119	/* look for a matching code in the table */
	120	for (i = 0; i < tpl_count; i++, tpl++) {
	121	if (tpl->code == code)
	122	break;
ed9935f4	123	}
4ec64960 AH	124	if (i < tpl_count) {
	125	if (size >= tpl->min_size) {
	126	if (tpl->parse)
	127	ret = tpl->parse(card, func, buf, size);
	128	else
	129	ret = -EILSEQ; /* known tuple, not parsed */
	130	} else {
	131	/* invalid tuple */
	132	ret = -EINVAL;
	133	}
	134	if (ret && ret != -EILSEQ && ret != -ENOENT) {
	135	printk(KERN_ERR "%s: bad %s tuple 0x%02x (%u bytes)\n",
	136	mmc_hostname(card->host), tpl_descr, code, size);
	137	}
	138	} else {
	139	/* unknown tuple */
	140	ret = -ENOENT;
	141	}
	142
	143	return ret;
ed9935f4 AH	144	}
ed9935f4 AH	145
4ec64960	146	static int cistpl_funce_common(struct mmc_card card, struct sdio_func func,
1a632f8c PO	147	const unsigned char *buf, unsigned size)
1a632f8c PO	148	{
4ec64960 AH	149	/* Only valid for the common CIS (function 0) */
4ec64960 AH	150	if (func)
1a632f8c PO	151	return -EINVAL;
	152
	153	/* TPLFE_FN0_BLK_SIZE */
	154	card->cis.blksize = buf[1] \| (buf[2] << 8);
	155
	156	/* TPLFE_MAX_TRAN_SPEED */
	157	card->cis.max_dtr = speed_val[(buf[3] >> 3) & 15] *
	158	speed_unit[buf[3] & 7];
	159
	160	return 0;
	161	}
	162
4ec64960	163	static int cistpl_funce_func(struct mmc_card card, struct sdio_func func,
1a632f8c PO	164	const unsigned char *buf, unsigned size)
	165	{
	166	unsigned vsn;
	167	unsigned min_size;
	168
4ec64960 AH	169	/* Only valid for the individual function's CIS (1-7) */
	170	if (!func)
	171	return -EINVAL;
ed9935f4	172
4ec64960 AH	173	/*
	174	* This tuple has a different length depending on the SDIO spec
	175	* version.
	176	*/
1a632f8c PO	177	vsn = func->card->cccr.sdio_vsn;
	178	min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;
	179
4ec64960	180	if (size < min_size)
1a632f8c PO	181	return -EINVAL;
	182
	183	/* TPLFE_MAX_BLK_SIZE */
9a08f82b	184	func->max_blksize = buf[12] \| (buf[13] << 8);
b7261261	185
62a7573e BZ	186	/* TPLFE_ENABLE_TIMEOUT_VAL, present in ver 1.1 and above */
	187	if (vsn > SDIO_SDIO_REV_1_00)
	188	func->enable_timeout = (buf[28] \| (buf[29] << 8)) * 10;
	189	else
	190	func->enable_timeout = jiffies_to_msecs(HZ);
	191
b7261261 NP	192	return 0;
	193	}
	194
4ec64960 AH	195	/*
	196	* Known TPLFE_TYPEs table for CISTPL_FUNCE tuples.
	197	*
	198	* Note that, unlike PCMCIA, CISTPL_FUNCE tuples are not parsed depending
	199	* on the TPLFID_FUNCTION value of the previous CISTPL_FUNCID as on SDIO
	200	* TPLFID_FUNCTION is always hardcoded to 0x0C.
	201	*/
	202	static const struct cis_tpl cis_tpl_funce_list[] = {
	203	{ 0x00, 4, cistpl_funce_common },
	204	{ 0x01, 0, cistpl_funce_func },
	205	{ 0x04, 1+1+6, /* CISTPL_FUNCE_LAN_NODE_ID */ },
	206	};
	207
1a632f8c PO	208	static int cistpl_funce(struct mmc_card card, struct sdio_func func,
	209	const unsigned char *buf, unsigned size)
	210	{
4ec64960 AH	211	if (size < 1)
4ec64960 AH	212	return -EINVAL;
1a632f8c	213
4ec64960 AH	214	return cis_tpl_parse(card, func, "CISTPL_FUNCE",
	215	cis_tpl_funce_list,
	216	ARRAY_SIZE(cis_tpl_funce_list),
	217	buf[0], buf, size);
1a632f8c PO	218	}
1a632f8c PO	219
4ec64960	220	/* Known TPL_CODEs table for CIS tuples */
b7261261	221	static const struct cis_tpl cis_tpl_list[] = {
759bdc7a	222	{ 0x15, 3, cistpl_vers_1 },
b7261261 NP	223	{ 0x20, 4, cistpl_manfid },
b7261261 NP	224	{ 0x21, 2, /* cistpl_funcid */ },
1a632f8c	225	{ 0x22, 0, cistpl_funce },
b7261261 NP	226	};
b7261261 NP	227
1a632f8c	228	static int sdio_read_cis(struct mmc_card card, struct sdio_func func)
b7261261 NP	229	{
b7261261 NP	230	int ret;
b1538bcf	231	struct sdio_func_tuple this, *prev;
b7261261 NP	232	unsigned i, ptr = 0;
b7261261 NP	233
1a632f8c PO	234	/*
	235	* Note that this works for the common CIS (function number 0) as
	236	* well as a function's CIS * since SDIO_CCCR_CIS and SDIO_FBR_CIS
	237	* have the same offset.
	238	*/
b7261261	239	for (i = 0; i < 3; i++) {
1a632f8c PO	240	unsigned char x, fn;
	241
	242	if (func)
	243	fn = func->num;
	244	else
	245	fn = 0;
	246
	247	ret = mmc_io_rw_direct(card, 0, 0,
7616ee95	248	SDIO_FBR_BASE(fn) + SDIO_FBR_CIS + i, 0, &x);
b7261261 NP	249	if (ret)
	250	return ret;
	251	ptr \|= x << (i * 8);
	252	}
	253
1a632f8c PO	254	if (func)
	255	prev = &func->tuples;
	256	else
	257	prev = &card->tuples;
	258
	259	BUG_ON(*prev);
b7261261 NP	260
	261	do {
	262	unsigned char tpl_code, tpl_link;
b7261261	263
1a632f8c	264	ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_code);
b7261261 NP	265	if (ret)
	266	break;
	267
	268	/* 0xff means we're done */
	269	if (tpl_code == 0xff)
	270	break;
	271
c8d718f1 PO	272	/* null entries have no link field or data */
	273	if (tpl_code == 0x00)
	274	continue;
	275
1a632f8c	276	ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
b7261261 NP	277	if (ret)
	278	break;
	279
0d6132ba PO	280	/* a size of 0xff also means we're done */
	281	if (tpl_link == 0xff)
	282	break;
	283
b1538bcf NP	284	this = kmalloc(sizeof(*this) + tpl_link, GFP_KERNEL);
	285	if (!this)
	286	return -ENOMEM;
	287
	288	for (i = 0; i < tpl_link; i++) {
1a632f8c	289	ret = mmc_io_rw_direct(card, 0, 0,
b1538bcf NP	290	ptr + i, 0, &this->data[i]);
b1538bcf NP	291	if (ret)
b7261261	292	break;
b7261261	293	}
b1538bcf NP	294	if (ret) {
b1538bcf NP	295	kfree(this);
b7261261 NP	296	break;
	297	}
	298
4ec64960 AH	299	/* Try to parse the CIS tuple */
	300	ret = cis_tpl_parse(card, func, "CIS",
	301	cis_tpl_list, ARRAY_SIZE(cis_tpl_list),
	302	tpl_code, this->data, tpl_link);
	303	if (ret == -EILSEQ \|\| ret == -ENOENT) {
ed9935f4	304	/*
4ec64960 AH	305	* The tuple is unknown or known but not parsed.
4ec64960 AH	306	* Queue the tuple for the function driver.
ed9935f4	307	*/
ed9935f4 AH	308	this->next = NULL;
	309	this->code = tpl_code;
	310	this->size = tpl_link;
	311	*prev = this;
	312	prev = &this->next;
4ec64960 AH	313
	314	if (ret == -ENOENT) {
	315	/* warn about unknown tuples */
	316	printk(KERN_WARNING "%s: queuing unknown"
	317	" CIS tuple 0x%02x (%u bytes)\n",
	318	mmc_hostname(card->host),
	319	tpl_code, tpl_link);
	320	}
	321
ed9935f4 AH	322	/* keep on analyzing tuples */
ed9935f4 AH	323	ret = 0;
4ec64960 AH	324	} else {
	325	/*
	326	* We don't need the tuple anymore if it was
	327	* successfully parsed by the SDIO core or if it is
	328	* not going to be queued for a driver.
	329	*/
	330	kfree(this);
b7261261	331	}
b7261261	332
b1538bcf	333	ptr += tpl_link;
b7261261 NP	334	} while (!ret);
b7261261 NP	335
1a632f8c PO	336	/*
	337	* Link in all unknown tuples found in the common CIS so that
	338	* drivers don't have to go digging in two places.
	339	*/
	340	if (func)
	341	*prev = card->tuples;
	342
b7261261 NP	343	return ret;
b7261261 NP	344	}
b1538bcf	345
1a632f8c PO	346	int sdio_read_common_cis(struct mmc_card *card)
	347	{
	348	return sdio_read_cis(card, NULL);
	349	}
	350
	351	void sdio_free_common_cis(struct mmc_card *card)
b1538bcf NP	352	{
	353	struct sdio_func_tuple tuple, victim;
	354
1a632f8c	355	tuple = card->tuples;
b1538bcf NP	356
	357	while (tuple) {
	358	victim = tuple;
	359	tuple = tuple->next;
	360	kfree(victim);
	361	}
	362
1a632f8c PO	363	card->tuples = NULL;
	364	}
	365
	366	int sdio_read_func_cis(struct sdio_func *func)
	367	{
	368	int ret;
	369
	370	ret = sdio_read_cis(func->card, func);
	371	if (ret)
	372	return ret;
	373
	374	/*
	375	* Since we've linked to tuples in the card structure,
	376	* we must make sure we have a reference to it.
	377	*/
	378	get_device(&func->card->dev);
	379
	380	/*
	381	* Vendor/device id is optional for function CIS, so
	382	* copy it from the card structure as needed.
	383	*/
	384	if (func->vendor == 0) {
	385	func->vendor = func->card->cis.vendor;
	386	func->device = func->card->cis.device;
	387	}
	388
	389	return 0;
	390	}
	391
	392	void sdio_free_func_cis(struct sdio_func *func)
	393	{
	394	struct sdio_func_tuple tuple, victim;
	395
	396	tuple = func->tuples;
	397
	398	while (tuple && tuple != func->card->tuples) {
	399	victim = tuple;
	400	tuple = tuple->next;
	401	kfree(victim);
	402	}
	403
b1538bcf	404	func->tuples = NULL;
1a632f8c PO	405
	406	/*
	407	* We have now removed the link to the tuples in the
	408	* card structure, so remove the reference.
	409	*/
	410	put_device(&func->card->dev);
b1538bcf NP	411	}
b1538bcf NP	412