atmel_cs.c

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/*** -*- linux-c -*- **********************************************************

     Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.

        Copyright 2000-2001 ATMEL Corporation.
        Copyright 2003 Simon Kelley.

    This code was developed from version 2.1.1 of the Atmel drivers,
    released by Atmel corp. under the GPL in December 2002. It also
    includes code from the Linux aironet drivers (C) Benjamin Reed,
    and the Linux PCMCIA package, (C) David Hinds.

    For all queries about this code, please contact the current author,
    Simon Kelley <[email protected]> and not Atmel Corporation.

    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.

    This software is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Atmel wireless lan drivers; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

******************************************************************************/

#ifdef __IN_PCMCIA_PACKAGE__
#include <pcmcia/k_compat.h>
#endif
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/netdevice.h>
#include <linux/moduleparam.h>
#include <linux/device.h>

#include <pcmcia/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ds.h>
#include <pcmcia/ciscode.h>

#include <asm/io.h>
#include <linux/wireless.h>

#include "atmel.h"


/*====================================================================*/

MODULE_AUTHOR("Simon Kelley");
MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");

/*====================================================================*/

static int atmel_config(struct pcmcia_device *link);
static void atmel_release(struct pcmcia_device *link);

static void atmel_detach(struct pcmcia_device *p_dev);

typedef struct local_info_t {
    struct net_device *eth_dev;
} local_info_t;

static int atmel_probe(struct pcmcia_device *p_dev)
{
    local_info_t *local;

    dev_dbg(&p_dev->dev, "atmel_attach()\n");

    /* Allocate space for private device-specific data */
    local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
    if (!local) {
        printk(KERN_ERR "atmel_cs: no memory for new device\n");
        return -ENOMEM;
    }
    p_dev->priv = local;

    return atmel_config(p_dev);
} /* atmel_attach */

static void atmel_detach(struct pcmcia_device *link)
{
    dev_dbg(&link->dev, "atmel_detach\n");

    atmel_release(link);

    kfree(link->priv);
}

/* Call-back function to interrogate PCMCIA-specific information
   about the current existence of the card */
static int card_present(void *arg)
{
    struct pcmcia_device *link = (struct pcmcia_device *)arg;

    if (pcmcia_dev_present(link))
        return 1;

    return 0;
}

static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
{
    if (p_dev->config_index == 0)
        return -EINVAL;

    return pcmcia_request_io(p_dev);
}

static int atmel_config(struct pcmcia_device *link)
{
    local_info_t *dev;
    int ret;
    const struct pcmcia_device_id *did;

    dev = link->priv;
    did = dev_get_drvdata(&link->dev);

    dev_dbg(&link->dev, "atmel_config\n");

    link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
        CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;

    if (pcmcia_loop_config(link, atmel_config_check, NULL))
        goto failed;

    if (!link->irq) {
        dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
        goto failed;
    }

    ret = pcmcia_enable_device(link);
    if (ret)
        goto failed;

    ((local_info_t*)link->priv)->eth_dev =
        init_atmel_card(link->irq,
                link->resource[0]->start,
                did ? did->driver_info : ATMEL_FW_TYPE_NONE,
                &link->dev,
                card_present,
                link);
    if (!((local_info_t*)link->priv)->eth_dev)
            goto failed;


    return 0;

 failed:
    atmel_release(link);
    return -ENODEV;
}

static void atmel_release(struct pcmcia_device *link)
{
    struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;

    dev_dbg(&link->dev, "atmel_release\n");

    if (dev)
        stop_atmel_card(dev);
    ((local_info_t*)link->priv)->eth_dev = NULL;

    pcmcia_disable_device(link);
}

static int atmel_suspend(struct pcmcia_device *link)
{
    local_info_t *local = link->priv;

    netif_device_detach(local->eth_dev);

    return 0;
}

static int atmel_resume(struct pcmcia_device *link)
{
    local_info_t *local = link->priv;

    atmel_open(local->eth_dev);
    netif_device_attach(local->eth_dev);

    return 0;
}

/*====================================================================*/
/* We use the driver_info field to store the correct firmware type for a card. */

#define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
    .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
            PCMCIA_DEV_ID_MATCH_CARD_ID, \
    .manf_id = (manf), \
    .card_id = (card), \
        .driver_info = (kernel_ulong_t)(info), }

#define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
    .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
            PCMCIA_DEV_ID_MATCH_PROD_ID2, \
    .prod_id = { (v1), (v2), NULL, NULL }, \
    .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
        .driver_info = (kernel_ulong_t)(info), }

static const struct pcmcia_device_id atmel_ids[] = {
    PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
    PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
    PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
    PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
    PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
    PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
    PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
    PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
    PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
    PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
    PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
    PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
    PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
    PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
    PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
    PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
    PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
    PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
    PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
    PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
    PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
    PCMCIA_DEVICE_NULL
};

MODULE_DEVICE_TABLE(pcmcia, atmel_ids);

static struct pcmcia_driver atmel_driver = {
    .owner      = THIS_MODULE,
    .name       = "atmel_cs",
    .probe          = atmel_probe,
    .remove     = atmel_detach,
    .id_table   = atmel_ids,
    .suspend    = atmel_suspend,
    .resume     = atmel_resume,
};

static int __init atmel_cs_init(void)
{
        return pcmcia_register_driver(&atmel_driver);
}

static void __exit atmel_cs_cleanup(void)
{
        pcmcia_unregister_driver(&atmel_driver);
}

/*
    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.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    In addition:

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:

    1. Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
    3. The name of the author may not be used to endorse or promote
       products derived from this software without specific prior written
       permission.

    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.
*/

module_init(atmel_cs_init);
module_exit(atmel_cs_cleanup);