LXR linux/drivers/net/wireless/atmel/atmel

   1/*** -*- linux-c -*- **********************************************************
   2
   3     Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
   4
   5        Copyright 2000-2001 ATMEL Corporation.
   6        Copyright 2003 Simon Kelley.
   7
   8    This code was developed from version 2.1.1 of the Atmel drivers,
   9    released by Atmel corp. under the GPL in December 2002. It also
  10    includes code from the Linux aironet drivers (C) Benjamin Reed,
  11    and the Linux PCMCIA package, (C) David Hinds.
  12
  13    For all queries about this code, please contact the current author,
  14    Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
  15
  16    This program is free software; you can redistribute it and/or modify
  17    it under the terms of the GNU General Public License as published by
  18    the Free Software Foundation; either version 2 of the License, or
  19    (at your option) any later version.
  20
  21    This software is distributed in the hope that it will be useful,
  22    but WITHOUT ANY WARRANTY; without even the implied warranty of
  23    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24    GNU General Public License for more details.
  25
  26    You should have received a copy of the GNU General Public License
  27    along with Atmel wireless lan drivers; if not, see
  28    <http://www.gnu.org/licenses/>.
  29
  30******************************************************************************/
  31
  32#ifdef __IN_PCMCIA_PACKAGE__
  33#include <pcmcia/k_compat.h>
  34#endif
  35#include <linux/kernel.h>
  36#include <linux/module.h>
  37#include <linux/ptrace.h>
  38#include <linux/slab.h>
  39#include <linux/string.h>
  40#include <linux/netdevice.h>
  41#include <linux/moduleparam.h>
  42#include <linux/device.h>
  43
  44#include <pcmcia/cistpl.h>
  45#include <pcmcia/cisreg.h>
  46#include <pcmcia/ds.h>
  47#include <pcmcia/ciscode.h>
  48
  49#include <asm/io.h>
  50#include <linux/wireless.h>
  51
  52#include "atmel.h"
  53
  54
  55/*====================================================================*/
  56
  57MODULE_AUTHOR("Simon Kelley");
  58MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  59MODULE_LICENSE("GPL");
  60
  61/*====================================================================*/
  62
  63static int atmel_config(struct pcmcia_device *link);
  64static void atmel_release(struct pcmcia_device *link);
  65
  66static void atmel_detach(struct pcmcia_device *p_dev);
  67
  68struct local_info {
  69        struct net_device *eth_dev;
  70};
  71
  72static int atmel_probe(struct pcmcia_device *p_dev)
  73{
  74        struct local_info *local;
  75
  76        dev_dbg(&p_dev->dev, "atmel_attach()\n");
  77
  78        /* Allocate space for private device-specific data */
  79        local = kzalloc(sizeof(*local), GFP_KERNEL);
  80        if (!local)
  81                return -ENOMEM;
  82
  83        p_dev->priv = local;
  84
  85        return atmel_config(p_dev);
  86} /* atmel_attach */
  87
  88static void atmel_detach(struct pcmcia_device *link)
  89{
  90        dev_dbg(&link->dev, "atmel_detach\n");
  91
  92        atmel_release(link);
  93
  94        kfree(link->priv);
  95}
  96
  97/* Call-back function to interrogate PCMCIA-specific information
  98   about the current existence of the card */
  99static int card_present(void *arg)
 100{
 101        struct pcmcia_device *link = (struct pcmcia_device *)arg;
 102
 103        if (pcmcia_dev_present(link))
 104                return 1;
 105
 106        return 0;
 107}
 108
 109static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
 110{
 111        if (p_dev->config_index == 0)
 112                return -EINVAL;
 113
 114        return pcmcia_request_io(p_dev);
 115}
 116
 117static int atmel_config(struct pcmcia_device *link)
 118{
 119        int ret;
 120        const struct pcmcia_device_id *did;
 121
 122        did = dev_get_drvdata(&link->dev);
 123
 124        dev_dbg(&link->dev, "atmel_config\n");
 125
 126        link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
 127                CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
 128
 129        if (pcmcia_loop_config(link, atmel_config_check, NULL))
 130                goto failed;
 131
 132        if (!link->irq) {
 133                dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
 134                goto failed;
 135        }
 136
 137        ret = pcmcia_enable_device(link);
 138        if (ret)
 139                goto failed;
 140
 141        ((struct local_info *)link->priv)->eth_dev =
 142                init_atmel_card(link->irq,
 143                                link->resource[0]->start,
 144                                did ? did->driver_info : ATMEL_FW_TYPE_NONE,
 145                                &link->dev,
 146                                card_present,
 147                                link);
 148        if (!((struct local_info *)link->priv)->eth_dev)
 149                        goto failed;
 150
 151
 152        return 0;
 153
 154 failed:
 155        atmel_release(link);
 156        return -ENODEV;
 157}
 158
 159static void atmel_release(struct pcmcia_device *link)
 160{
 161        struct net_device *dev = ((struct local_info *)link->priv)->eth_dev;
 162
 163        dev_dbg(&link->dev, "atmel_release\n");
 164
 165        if (dev)
 166                stop_atmel_card(dev);
 167        ((struct local_info *)link->priv)->eth_dev = NULL;
 168
 169        pcmcia_disable_device(link);
 170}
 171
 172static int atmel_suspend(struct pcmcia_device *link)
 173{
 174        struct local_info *local = link->priv;
 175
 176        netif_device_detach(local->eth_dev);
 177
 178        return 0;
 179}
 180
 181static int atmel_resume(struct pcmcia_device *link)
 182{
 183        struct local_info *local = link->priv;
 184
 185        atmel_open(local->eth_dev);
 186        netif_device_attach(local->eth_dev);
 187
 188        return 0;
 189}
 190
 191/*====================================================================*/
 192/* We use the driver_info field to store the correct firmware type for a card. */
 193
 194#define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
 195        .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
 196                        PCMCIA_DEV_ID_MATCH_CARD_ID, \
 197        .manf_id = (manf), \
 198        .card_id = (card), \
 199        .driver_info = (kernel_ulong_t)(info), }
 200
 201#define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
 202        .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
 203                        PCMCIA_DEV_ID_MATCH_PROD_ID2, \
 204        .prod_id = { (v1), (v2), NULL, NULL }, \
 205        .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
 206        .driver_info = (kernel_ulong_t)(info), }
 207
 208static const struct pcmcia_device_id atmel_ids[] = {
 209        PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
 210        PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
 211        PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
 212        PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
 213        PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
 214        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
 215        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
 216        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
 217        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
 218        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
 219        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
 220        PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
 221        PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
 222        PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
 223        PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
 224        PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
 225        PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
 226        PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
 227        PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
 228        PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
 229        PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
 230        PCMCIA_DEVICE_NULL
 231};
 232
 233MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
 234
 235static struct pcmcia_driver atmel_driver = {
 236        .owner          = THIS_MODULE,
 237        .name           = "atmel_cs",
 238        .probe          = atmel_probe,
 239        .remove         = atmel_detach,
 240        .id_table       = atmel_ids,
 241        .suspend        = atmel_suspend,
 242        .resume         = atmel_resume,
 243};
 244module_pcmcia_driver(atmel_driver);
 245
 246/*
 247    This program is free software; you can redistribute it and/or
 248    modify it under the terms of the GNU General Public License
 249    as published by the Free Software Foundation; either version 2
 250    of the License, or (at your option) any later version.
 251
 252    This program is distributed in the hope that it will be useful,
 253    but WITHOUT ANY WARRANTY; without even the implied warranty of
 254    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 255    GNU General Public License for more details.
 256
 257    In addition:
 258
 259    Redistribution and use in source and binary forms, with or without
 260    modification, are permitted provided that the following conditions
 261    are met:
 262
 263    1. Redistributions of source code must retain the above copyright
 264       notice, this list of conditions and the following disclaimer.
 265    2. Redistributions in binary form must reproduce the above copyright
 266       notice, this list of conditions and the following disclaimer in the
 267       documentation and/or other materials provided with the distribution.
 268    3. The name of the author may not be used to endorse or promote
 269       products derived from this software without specific prior written
 270       permission.
 271
 272    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 273    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 274    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 275    ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 276    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 277    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 278    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 279    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 280    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 281    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 282    POSSIBILITY OF SUCH DAMAGE.
 283*/
 284