[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / pcmcia / pcmcia_cis.c

/*
 * PCMCIA high-level CIS access functions
 *
 * 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.
 *
 * Copyright (C) 1999	     David A. Hinds
 * Copyright (C) 2004-2010   Dominik Brodowski
 *
 * 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.
 *
 */

#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>

#include <pcmcia/cisreg.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ss.h>
#include <pcmcia/ds.h>
#include "cs_internal.h"


/**
 * pccard_read_tuple() - internal CIS tuple access
 * @s:		the struct pcmcia_socket where the card is inserted
 * @function:	the device function we loop for
 * @code:	which CIS code shall we look for?
 * @parse:	buffer where the tuple shall be parsed (or NULL, if no parse)
 *
 * pccard_read_tuple() reads out one tuple and attempts to parse it
 */
int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function,
		cisdata_t code, void *parse)
{
	tuple_t tuple;
	cisdata_t *buf;
	int ret;

	buf = kmalloc(256, GFP_KERNEL);
	if (buf == NULL) {
		dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
		return -ENOMEM;
	}
	tuple.DesiredTuple = code;
	tuple.Attributes = 0;
	if (function == BIND_FN_ALL)
		tuple.Attributes = TUPLE_RETURN_COMMON;
	ret = pccard_get_first_tuple(s, function, &tuple);
	if (ret != 0)
		goto done;
	tuple.TupleData = buf;
	tuple.TupleOffset = 0;
	tuple.TupleDataMax = 255;
	ret = pccard_get_tuple_data(s, &tuple);
	if (ret != 0)
		goto done;
	ret = pcmcia_parse_tuple(&tuple, parse);
done:
	kfree(buf);
	return ret;
}


/**
 * pccard_loop_tuple() - loop over tuples in the CIS
 * @s:		the struct pcmcia_socket where the card is inserted
 * @function:	the device function we loop for
 * @code:	which CIS code shall we look for?
 * @parse:	buffer where the tuple shall be parsed (or NULL, if no parse)
 * @priv_data:	private data to be passed to the loop_tuple function.
 * @loop_tuple:	function to call for each CIS entry of type @function. IT
 *		gets passed the raw tuple, the paresed tuple (if @parse is
 *		set) and @priv_data.
 *
 * pccard_loop_tuple() loops over all CIS entries of type @function, and
 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
 */
int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function,
		      cisdata_t code, cisparse_t *parse, void *priv_data,
		      int (*loop_tuple) (tuple_t *tuple,
					 cisparse_t *parse,
					 void *priv_data))
{
	tuple_t tuple;
	cisdata_t *buf;
	int ret;

	buf = kzalloc(256, GFP_KERNEL);
	if (buf == NULL) {
		dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
		return -ENOMEM;
	}

	tuple.TupleData = buf;
	tuple.TupleDataMax = 255;
	tuple.TupleOffset = 0;
	tuple.DesiredTuple = code;
	tuple.Attributes = 0;

	ret = pccard_get_first_tuple(s, function, &tuple);
	while (!ret) {
		if (pccard_get_tuple_data(s, &tuple))
			goto next_entry;

		if (parse)
			if (pcmcia_parse_tuple(&tuple, parse))
				goto next_entry;

		ret = loop_tuple(&tuple, parse, priv_data);
		if (!ret)
			break;

next_entry:
		ret = pccard_get_next_tuple(s, function, &tuple);
	}

	kfree(buf);
	return ret;
}


/**
 * pcmcia_io_cfg_data_width() - convert cfgtable to data path width parameter
 */
static int pcmcia_io_cfg_data_width(unsigned int flags)
{
	if (!(flags & CISTPL_IO_8BIT))
		return IO_DATA_PATH_WIDTH_16;
	if (!(flags & CISTPL_IO_16BIT))
		return IO_DATA_PATH_WIDTH_8;
	return IO_DATA_PATH_WIDTH_AUTO;
}


struct pcmcia_cfg_mem {
	struct pcmcia_device *p_dev;
	int (*conf_check) (struct pcmcia_device *p_dev, void *priv_data);
	void *priv_data;
	cisparse_t parse;
	cistpl_cftable_entry_t dflt;
};

/**
 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
 *
 * pcmcia_do_loop_config() is the internal callback for the call from
 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
 * by a struct pcmcia_cfg_mem.
 */
static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
{
	struct pcmcia_cfg_mem *cfg_mem = priv;
	struct pcmcia_device *p_dev = cfg_mem->p_dev;
	cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
	cistpl_cftable_entry_t *dflt = &cfg_mem->dflt;
	unsigned int flags = p_dev->config_flags;
	unsigned int vcc = p_dev->socket->socket.Vcc;

	dev_dbg(&p_dev->dev, "testing configuration %x, autoconf %x\n",
		cfg->index, flags);

	/* default values */
	cfg_mem->p_dev->config_index = cfg->index;
	if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
		cfg_mem->dflt = *cfg;

	/* check for matching Vcc? */
	if (flags & CONF_AUTO_CHECK_VCC) {
		if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
			if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000)
				return -ENODEV;
		} else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) {
			if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000)
				return -ENODEV;
		}
	}

	/* set Vpp? */
	if (flags & CONF_AUTO_SET_VPP) {
		if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
			p_dev->vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
		else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM))
			p_dev->vpp =
				dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000;
	}

	/* enable audio? */
	if ((flags & CONF_AUTO_AUDIO) && (cfg->flags & CISTPL_CFTABLE_AUDIO))
		p_dev->config_flags |= CONF_ENABLE_SPKR;


	/* IO window settings? */
	if (flags & CONF_AUTO_SET_IO) {
		cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
		int i = 0;

		p_dev->resource[0]->start = p_dev->resource[0]->end = 0;
		p_dev->resource[1]->start = p_dev->resource[1]->end = 0;
		if (io->nwin == 0)
			return -ENODEV;

		p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
		p_dev->resource[0]->flags |=
					pcmcia_io_cfg_data_width(io->flags);
		if (io->nwin > 1) {
			/* For multifunction cards, by convention, we
			 * configure the network function with window 0,
			 * and serial with window 1 */
			i = (io->win[1].len > io->win[0].len);
			p_dev->resource[1]->flags = p_dev->resource[0]->flags;
			p_dev->resource[1]->start = io->win[1-i].base;
			p_dev->resource[1]->end = io->win[1-i].len;
		}
		p_dev->resource[0]->start = io->win[i].base;
		p_dev->resource[0]->end = io->win[i].len;
		p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
	}

	/* MEM window settings? */
	if (flags & CONF_AUTO_SET_IOMEM) {
		/* so far, we only set one memory window */
		cistpl_mem_t *mem = (cfg->mem.nwin) ? &cfg->mem : &dflt->mem;

		p_dev->resource[2]->start = p_dev->resource[2]->end = 0;
		if (mem->nwin == 0)
			return -ENODEV;

		p_dev->resource[2]->start = mem->win[0].host_addr;
		p_dev->resource[2]->end = mem->win[0].len;
		if (p_dev->resource[2]->end < 0x1000)
			p_dev->resource[2]->end = 0x1000;
		p_dev->card_addr = mem->win[0].card_addr;
	}

	dev_dbg(&p_dev->dev,
		"checking configuration %x: %pr %pr %pr (%d lines)\n",
		p_dev->config_index, p_dev->resource[0], p_dev->resource[1],
		p_dev->resource[2], p_dev->io_lines);

	return cfg_mem->conf_check(p_dev, cfg_mem->priv_data);
}

/**
 * pcmcia_loop_config() - loop over configuration options
 * @p_dev:	the struct pcmcia_device which we need to loop for.
 * @conf_check:	function to call for each configuration option.
 *		It gets passed the struct pcmcia_device and private data
 *		being passed to pcmcia_loop_config()
 * @priv_data:	private data to be passed to the conf_check function.
 *
 * pcmcia_loop_config() loops over all configuration options, and calls
 * the driver-specific conf_check() for each one, checking whether
 * it is a valid one. Returns 0 on success or errorcode otherwise.
 */
int pcmcia_loop_config(struct pcmcia_device *p_dev,
		       int	(*conf_check)	(struct pcmcia_device *p_dev,
						 void *priv_data),
		       void *priv_data)
{
	struct pcmcia_cfg_mem *cfg_mem;
	int ret;

	cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
	if (cfg_mem == NULL)
		return -ENOMEM;

	cfg_mem->p_dev = p_dev;
	cfg_mem->conf_check = conf_check;
	cfg_mem->priv_data = priv_data;

	ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
				CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
				cfg_mem, pcmcia_do_loop_config);

	kfree(cfg_mem);
	return ret;
}
EXPORT_SYMBOL(pcmcia_loop_config);


struct pcmcia_loop_mem {
	struct pcmcia_device *p_dev;
	void *priv_data;
	int (*loop_tuple) (struct pcmcia_device *p_dev,
			   tuple_t *tuple,
			   void *priv_data);
};

/**
 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
 *
 * pcmcia_do_loop_tuple() is the internal callback for the call from
 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
 * by a struct pcmcia_cfg_mem.
 */
static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
{
	struct pcmcia_loop_mem *loop = priv;

	return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
};

/**
 * pcmcia_loop_tuple() - loop over tuples in the CIS
 * @p_dev:	the struct pcmcia_device which we need to loop for.
 * @code:	which CIS code shall we look for?
 * @priv_data:	private data to be passed to the loop_tuple function.
 * @loop_tuple:	function to call for each CIS entry of type @function. IT
 *		gets passed the raw tuple and @priv_data.
 *
 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
 */
int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
		      int (*loop_tuple) (struct pcmcia_device *p_dev,
					 tuple_t *tuple,
					 void *priv_data),
		      void *priv_data)
{
	struct pcmcia_loop_mem loop = {
		.p_dev = p_dev,
		.loop_tuple = loop_tuple,
		.priv_data = priv_data};

	return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
				 &loop, pcmcia_do_loop_tuple);
}
EXPORT_SYMBOL(pcmcia_loop_tuple);


struct pcmcia_loop_get {
	size_t len;
	cisdata_t **buf;
};

/**
 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
 *
 * pcmcia_do_get_tuple() is the internal callback for the call from
 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
 * the first tuple, return 0 unconditionally. Create a memory buffer large
 * enough to hold the content of the tuple, and fill it with the tuple data.
 * The caller is responsible to free the buffer.
 */
static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
			       void *priv)
{
	struct pcmcia_loop_get *get = priv;

	*get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
	if (*get->buf) {
		get->len = tuple->TupleDataLen;
		memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
	} else
		dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
	return 0;
}

/**
 * pcmcia_get_tuple() - get first tuple from CIS
 * @p_dev:	the struct pcmcia_device which we need to loop for.
 * @code:	which CIS code shall we look for?
 * @buf:        pointer to store the buffer to.
 *
 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
 * It returns the buffer length (or zero). The caller is responsible to free
 * the buffer passed in @buf.
 */
size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
			unsigned char **buf)
{
	struct pcmcia_loop_get get = {
		.len = 0,
		.buf = buf,
	};

	*get.buf = NULL;
	pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);

	return get.len;
}
EXPORT_SYMBOL(pcmcia_get_tuple);


/**
 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
 *
 * pcmcia_do_get_mac() is the internal callback for the call from
 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
 * to struct net_device->dev_addr[i].
 */
static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
			     void *priv)
{
	struct net_device *dev = priv;
	int i;

	if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
		return -EINVAL;
	if (tuple->TupleDataLen < ETH_ALEN + 2) {
		dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
			"LAN_NODE_ID\n");
		return -EINVAL;
	}

	if (tuple->TupleData[1] != ETH_ALEN) {
		dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
		return -EINVAL;
	}
	for (i = 0; i < 6; i++)
		dev->dev_addr[i] = tuple->TupleData[i+2];
	return 0;
}

/**
 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
 * @p_dev:	the struct pcmcia_device for which we want the address.
 * @dev:	a properly prepared struct net_device to store the info to.
 *
 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
 * must be set up properly by the driver (see examples!).
 */
int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
{
	return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
}
EXPORT_SYMBOL(pcmcia_get_mac_from_cis);
Commit	Line	Data
5c128e84 DB	1	/*
	2	* PCMCIA high-level CIS access functions
	3	*
	4	* The initial developer of the original code is David A. Hinds
	5	* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
	6	* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
	7	*
	8	* Copyright (C) 1999 David A. Hinds
00990e7c	9	* Copyright (C) 2004-2010 Dominik Brodowski
5c128e84 DB	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License version 2 as
	13	* published by the Free Software Foundation.
	14	*
	15	*/
	16
6d59622e	17	#include <linux/slab.h>
5c128e84 DB	18	#include <linux/module.h>
	19	#include <linux/kernel.h>
	20	#include <linux/netdevice.h>
	21
5c128e84 DB	22	#include <pcmcia/cisreg.h>
	23	#include <pcmcia/cistpl.h>
	24	#include <pcmcia/ss.h>
5c128e84 DB	25	#include <pcmcia/ds.h>
	26	#include "cs_internal.h"
	27
	28
	29	/**
	30	* pccard_read_tuple() - internal CIS tuple access
	31	* @s: the struct pcmcia_socket where the card is inserted
	32	* @function: the device function we loop for
	33	* @code: which CIS code shall we look for?
	34	* @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
	35	*
	36	* pccard_read_tuple() reads out one tuple and attempts to parse it
	37	*/
	38	int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function,
	39	cisdata_t code, void *parse)
	40	{
	41	tuple_t tuple;
	42	cisdata_t *buf;
	43	int ret;
	44
	45	buf = kmalloc(256, GFP_KERNEL);
	46	if (buf == NULL) {
	47	dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
	48	return -ENOMEM;
	49	}
	50	tuple.DesiredTuple = code;
	51	tuple.Attributes = 0;
	52	if (function == BIND_FN_ALL)
	53	tuple.Attributes = TUPLE_RETURN_COMMON;
	54	ret = pccard_get_first_tuple(s, function, &tuple);
	55	if (ret != 0)
	56	goto done;
	57	tuple.TupleData = buf;
	58	tuple.TupleOffset = 0;
	59	tuple.TupleDataMax = 255;
	60	ret = pccard_get_tuple_data(s, &tuple);
	61	if (ret != 0)
	62	goto done;
	63	ret = pcmcia_parse_tuple(&tuple, parse);
	64	done:
	65	kfree(buf);
	66	return ret;
	67	}
	68
	69
	70	/**
	71	* pccard_loop_tuple() - loop over tuples in the CIS
	72	* @s: the struct pcmcia_socket where the card is inserted
	73	* @function: the device function we loop for
	74	* @code: which CIS code shall we look for?
	75	* @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
	76	* @priv_data: private data to be passed to the loop_tuple function.
	77	* @loop_tuple: function to call for each CIS entry of type @function. IT
	78	* gets passed the raw tuple, the paresed tuple (if @parse is
	79	* set) and @priv_data.
	80	*
	81	* pccard_loop_tuple() loops over all CIS entries of type @function, and
	82	* calls the @loop_tuple function for each entry. If the call to @loop_tuple
	83	* returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
	84	*/
	85	int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function,
	86	cisdata_t code, cisparse_t parse, void priv_data,
	87	int (loop_tuple) (tuple_t tuple,
	88	cisparse_t *parse,
89	void *priv_data))
90	{
91	tuple_t tuple;
92	cisdata_t *buf;
93	int ret;
94
95	buf = kzalloc(256, GFP_KERNEL);
96	if (buf == NULL) {
97	dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
98	return -ENOMEM;
99	}
100
101	tuple.TupleData = buf;
102	tuple.TupleDataMax = 255;
103	tuple.TupleOffset = 0;
104	tuple.DesiredTuple = code;
105	tuple.Attributes = 0;
106
107	ret = pccard_get_first_tuple(s, function, &tuple);
108	while (!ret) {
109	if (pccard_get_tuple_data(s, &tuple))
110	goto next_entry;
111
112	if (parse)
113	if (pcmcia_parse_tuple(&tuple, parse))
114	goto next_entry;
115
116	ret = loop_tuple(&tuple, parse, priv_data);
117	if (!ret)
118	break;
119
120	next_entry:
121	ret = pccard_get_next_tuple(s, function, &tuple);
122	}
123
124	kfree(buf);
125	return ret;
126	}
127
00990e7c DB	128
	129	/**
	130	* pcmcia_io_cfg_data_width() - convert cfgtable to data path width parameter
	131	*/
	132	static int pcmcia_io_cfg_data_width(unsigned int flags)
	133	{
	134	if (!(flags & CISTPL_IO_8BIT))
	135	return IO_DATA_PATH_WIDTH_16;
	136	if (!(flags & CISTPL_IO_16BIT))
	137	return IO_DATA_PATH_WIDTH_8;
	138	return IO_DATA_PATH_WIDTH_AUTO;
	139	}
	140
	141
5c128e84 DB	142	struct pcmcia_cfg_mem {
5c128e84 DB	143	struct pcmcia_device *p_dev;
00990e7c	144	int (conf_check) (struct pcmcia_device p_dev, void *priv_data);
5c128e84	145	void *priv_data;
5c128e84 DB	146	cisparse_t parse;
	147	cistpl_cftable_entry_t dflt;
	148	};
	149
	150	/**
	151	* pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
	152	*
	153	* pcmcia_do_loop_config() is the internal callback for the call from
	154	* pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
	155	* by a struct pcmcia_cfg_mem.
	156	*/
	157	static int pcmcia_do_loop_config(tuple_t tuple, cisparse_t parse, void *priv)
	158	{
5c128e84	159	struct pcmcia_cfg_mem *cfg_mem = priv;
440eed43 DB	160	struct pcmcia_device *p_dev = cfg_mem->p_dev;
	161	cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
	162	cistpl_cftable_entry_t *dflt = &cfg_mem->dflt;
	163	unsigned int flags = p_dev->config_flags;
	164	unsigned int vcc = p_dev->socket->socket.Vcc;
	165
	166	dev_dbg(&p_dev->dev, "testing configuration %x, autoconf %x\n",
	167	cfg->index, flags);
5c128e84 DB	168
5c128e84 DB	169	/* default values */
7feabb64	170	cfg_mem->p_dev->config_index = cfg->index;
5c128e84 DB	171	if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
	172	cfg_mem->dflt = *cfg;
	173
440eed43 DB	174	/* check for matching Vcc? */
	175	if (flags & CONF_AUTO_CHECK_VCC) {
	176	if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
	177	if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000)
	178	return -ENODEV;
	179	} else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) {
	180	if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000)
	181	return -ENODEV;
	182	}
	183	}
	184
	185	/* set Vpp? */
	186	if (flags & CONF_AUTO_SET_VPP) {
	187	if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
	188	p_dev->vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
	189	else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM))
	190	p_dev->vpp =
	191	dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000;
	192	}
	193
	194	/* enable audio? */
	195	if ((flags & CONF_AUTO_AUDIO) && (cfg->flags & CISTPL_CFTABLE_AUDIO))
	196	p_dev->config_flags \|= CONF_ENABLE_SPKR;
	197
00990e7c DB	198
	199	/* IO window settings? */
	200	if (flags & CONF_AUTO_SET_IO) {
	201	cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
	202	int i = 0;
	203
	204	p_dev->resource[0]->start = p_dev->resource[0]->end = 0;
	205	p_dev->resource[1]->start = p_dev->resource[1]->end = 0;
	206	if (io->nwin == 0)
	207	return -ENODEV;
	208
	209	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
	210	p_dev->resource[0]->flags \|=
	211	pcmcia_io_cfg_data_width(io->flags);
	212	if (io->nwin > 1) {
	213	/* For multifunction cards, by convention, we
	214	* configure the network function with window 0,
	215	* and serial with window 1 */
	216	i = (io->win[1].len > io->win[0].len);
	217	p_dev->resource[1]->flags = p_dev->resource[0]->flags;
	218	p_dev->resource[1]->start = io->win[1-i].base;
	219	p_dev->resource[1]->end = io->win[1-i].len;
	220	}
	221	p_dev->resource[0]->start = io->win[i].base;
	222	p_dev->resource[0]->end = io->win[i].len;
	223	p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
	224	}
	225
	226	/* MEM window settings? */
	227	if (flags & CONF_AUTO_SET_IOMEM) {
	228	/* so far, we only set one memory window */
	229	cistpl_mem_t *mem = (cfg->mem.nwin) ? &cfg->mem : &dflt->mem;
	230
	231	p_dev->resource[2]->start = p_dev->resource[2]->end = 0;
	232	if (mem->nwin == 0)
	233	return -ENODEV;
	234
	235	p_dev->resource[2]->start = mem->win[0].host_addr;
	236	p_dev->resource[2]->end = mem->win[0].len;
	237	if (p_dev->resource[2]->end < 0x1000)
	238	p_dev->resource[2]->end = 0x1000;
	239	p_dev->card_addr = mem->win[0].card_addr;
	240	}
	241
	242	dev_dbg(&p_dev->dev,
	243	"checking configuration %x: %pr %pr %pr (%d lines)\n",
	244	p_dev->config_index, p_dev->resource[0], p_dev->resource[1],
	245	p_dev->resource[2], p_dev->io_lines);
	246
	247	return cfg_mem->conf_check(p_dev, cfg_mem->priv_data);
5c128e84 DB	248	}
	249
	250	/**
	251	* pcmcia_loop_config() - loop over configuration options
	252	* @p_dev: the struct pcmcia_device which we need to loop for.
	253	* @conf_check: function to call for each configuration option.
00990e7c	254	* It gets passed the struct pcmcia_device and private data
5c128e84 DB	255	* being passed to pcmcia_loop_config()
	256	* @priv_data: private data to be passed to the conf_check function.
	257	*
	258	* pcmcia_loop_config() loops over all configuration options, and calls
	259	* the driver-specific conf_check() for each one, checking whether
	260	* it is a valid one. Returns 0 on success or errorcode otherwise.
	261	*/
	262	int pcmcia_loop_config(struct pcmcia_device *p_dev,
	263	int (conf_check) (struct pcmcia_device p_dev,
5c128e84 DB	264	void *priv_data),
	265	void *priv_data)
	266	{
	267	struct pcmcia_cfg_mem *cfg_mem;
	268	int ret;
	269
	270	cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
	271	if (cfg_mem == NULL)
	272	return -ENOMEM;
	273
	274	cfg_mem->p_dev = p_dev;
	275	cfg_mem->conf_check = conf_check;
	276	cfg_mem->priv_data = priv_data;
	277
	278	ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
	279	CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
	280	cfg_mem, pcmcia_do_loop_config);
	281
	282	kfree(cfg_mem);
	283	return ret;
	284	}
	285	EXPORT_SYMBOL(pcmcia_loop_config);
	286
	287
	288	struct pcmcia_loop_mem {
	289	struct pcmcia_device *p_dev;
	290	void *priv_data;
	291	int (loop_tuple) (struct pcmcia_device p_dev,
	292	tuple_t *tuple,
	293	void *priv_data);
	294	};
	295
	296	/**
	297	* pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
	298	*
	299	* pcmcia_do_loop_tuple() is the internal callback for the call from
	300	* pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
	301	* by a struct pcmcia_cfg_mem.
	302	*/
	303	static int pcmcia_do_loop_tuple(tuple_t tuple, cisparse_t parse, void *priv)
	304	{
	305	struct pcmcia_loop_mem *loop = priv;
	306
	307	return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
	308	};
	309
	310	/**
	311	* pcmcia_loop_tuple() - loop over tuples in the CIS
	312	* @p_dev: the struct pcmcia_device which we need to loop for.
	313	* @code: which CIS code shall we look for?
	314	* @priv_data: private data to be passed to the loop_tuple function.
	315	* @loop_tuple: function to call for each CIS entry of type @function. IT
	316	* gets passed the raw tuple and @priv_data.
	317	*
	318	* pcmcia_loop_tuple() loops over all CIS entries of type @function, and
	319	* calls the @loop_tuple function for each entry. If the call to @loop_tuple
	320	* returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
	321	*/
	322	int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
	323	int (loop_tuple) (struct pcmcia_device p_dev,
	324	tuple_t *tuple,
	325	void *priv_data),
	326	void *priv_data)
	327	{
328	struct pcmcia_loop_mem loop = {
329	.p_dev = p_dev,
330	.loop_tuple = loop_tuple,
331	.priv_data = priv_data};
332
333	return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
334	&loop, pcmcia_do_loop_tuple);
335	}
336	EXPORT_SYMBOL(pcmcia_loop_tuple);
337
338
339	struct pcmcia_loop_get {
340	size_t len;
341	cisdata_t **buf;
342	};
343
344	/**
345	* pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
346	*
347	* pcmcia_do_get_tuple() is the internal callback for the call from
348	* pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
349	* the first tuple, return 0 unconditionally. Create a memory buffer large
350	* enough to hold the content of the tuple, and fill it with the tuple data.
351	* The caller is responsible to free the buffer.
352	*/
353	static int pcmcia_do_get_tuple(struct pcmcia_device p_dev, tuple_t tuple,
354	void *priv)
355	{
356	struct pcmcia_loop_get *get = priv;
357
358	*get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
359	if (*get->buf) {
360	get->len = tuple->TupleDataLen;
361	memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
362	} else
363	dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
364	return 0;
365	}
366
367	/**
368	* pcmcia_get_tuple() - get first tuple from CIS
369	* @p_dev: the struct pcmcia_device which we need to loop for.
370	* @code: which CIS code shall we look for?
371	* @buf: pointer to store the buffer to.
372	*
373	* pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
374	* It returns the buffer length (or zero). The caller is responsible to free
375	* the buffer passed in @buf.
376	*/
377	size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
378	unsigned char **buf)
379	{
380	struct pcmcia_loop_get get = {
381	.len = 0,
382	.buf = buf,
383	};
384
385	*get.buf = NULL;
386	pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
387
388	return get.len;
389	}
390	EXPORT_SYMBOL(pcmcia_get_tuple);
391
392
393	/**
394	* pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
395	*
396	* pcmcia_do_get_mac() is the internal callback for the call from
397	* pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
398	* tuple contains a proper LAN_NODE_ID of length 6, and copy the data
399	* to struct net_device->dev_addr[i].
400	*/
401	static int pcmcia_do_get_mac(struct pcmcia_device p_dev, tuple_t tuple,
402	void *priv)
403	{
404	struct net_device *dev = priv;
405	int i;
406
407	if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
408	return -EINVAL;
409	if (tuple->TupleDataLen < ETH_ALEN + 2) {
410	dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
411	"LAN_NODE_ID\n");
412	return -EINVAL;
413	}
414
415	if (tuple->TupleData[1] != ETH_ALEN) {
416	dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
417	return -EINVAL;
418	}
419	for (i = 0; i < 6; i++)
420	dev->dev_addr[i] = tuple->TupleData[i+2];
421	return 0;
422	}
423
424	/**
425	* pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
426	* @p_dev: the struct pcmcia_device for which we want the address.
427	* @dev: a properly prepared struct net_device to store the info to.
428	*
429	* pcmcia_get_mac_from_cis() reads out the hardware MAC address from
430	* CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
431	* must be set up properly by the driver (see examples!).
432	*/
433	int pcmcia_get_mac_from_cis(struct pcmcia_device p_dev, struct net_device dev)
434	{
435	return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
436	}
437	EXPORT_SYMBOL(pcmcia_get_mac_from_cis);
438