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/*
* 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
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