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");
  60MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
  61
  62/*====================================================================*/
  63
  64static int atmel_config(struct pcmcia_device *link);
  65static void atmel_release(struct pcmcia_device *link);
  66
  67static void atmel_detach(struct pcmcia_device *p_dev);
  68
  69struct local_info {
  70        struct net_device *eth_dev;
  71};
  72
  73static int atmel_probe(struct pcmcia_device *p_dev)
  74{
  75        struct local_info *local;
  76
  77        dev_dbg(&p_dev->dev, "atmel_attach()\n");
  78
  79        /* Allocate space for private device-specific data */
  80        local = kzalloc(sizeof(*local), GFP_KERNEL);
  81        if (!local)
  82                return -ENOMEM;
  83
  84        p_dev->priv = local;
  85
  86        return atmel_config(p_dev);
  87} /* atmel_attach */
  88
  89static void atmel_detach(struct pcmcia_device *link)
  90{
  91        dev_dbg(&link->dev, "atmel_detach\n");
  92
  93        atmel_release(link);
  94
  95        kfree(link->priv);
  96}
  97
  98/* Call-back function to interrogate PCMCIA-specific information
  99   about the current existence of the card */
 100static int card_present(void *arg)
 101{
 102        struct pcmcia_device *link = (struct pcmcia_device *)arg;
 103
 104        if (pcmcia_dev_present(link))
 105                return 1;
 106
 107        return 0;
 108}
 109
 110static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
 111{
 112        if (p_dev->config_index == 0)
 113                return -EINVAL;
 114
 115        return pcmcia_request_io(p_dev);
 116}
 117
 118static int atmel_config(struct pcmcia_device *link)
 119{
 120        struct local_info *dev;
 121        int ret;
 122        const struct pcmcia_device_id *did;
 123
 124        dev = link->priv;
 125        did = dev_get_drvdata(&link->dev);
 126
 127        dev_dbg(&link->dev, "atmel_config\n");
 128
 129        link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
 130                CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
 131
 132        if (pcmcia_loop_config(link, atmel_config_check, NULL))
 133                goto failed;
 134
 135        if (!link->irq) {
 136                dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
 137                goto failed;
 138        }
 139
 140        ret = pcmcia_enable_device(link);
 141        if (ret)
 142                goto failed;
 143
 144        ((struct local_info *)link->priv)->eth_dev =
 145                init_atmel_card(link->irq,
 146                                link->resource[0]->start,
 147                                did ? did->driver_info : ATMEL_FW_TYPE_NONE,
 148                                &link->dev,
 149                                card_present,
 150                                link);
 151        if (!((struct local_info *)link->priv)->eth_dev)
 152                        goto failed;
 153
 154
 155        return 0;
 156
 157 failed:
 158        atmel_release(link);
 159        return -ENODEV;
 160}
 161
 162static void atmel_release(struct pcmcia_device *link)
 163{
 164        struct net_device *dev = ((struct local_info *)link->priv)->eth_dev;
 165
 166        dev_dbg(&link->dev, "atmel_release\n");
 167
 168        if (dev)
 169                stop_atmel_card(dev);
 170        ((struct local_info *)link->priv)->eth_dev = NULL;
 171
 172        pcmcia_disable_device(link);
 173}
 174
 175static int atmel_suspend(struct pcmcia_device *link)
 176{
 177        struct local_info *local = link->priv;
 178
 179        netif_device_detach(local->eth_dev);
 180
 181        return 0;
 182}
 183
 184static int atmel_resume(struct pcmcia_device *link)
 185{
 186        struct local_info *local = link->priv;
 187
 188        atmel_open(local->eth_dev);
 189        netif_device_attach(local->eth_dev);
 190
 191        return 0;
 192}
 193
 194/*====================================================================*/
 195/* We use the driver_info field to store the correct firmware type for a card. */
 196
 197#define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
 198        .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
 199                        PCMCIA_DEV_ID_MATCH_CARD_ID, \
 200        .manf_id = (manf), \
 201        .card_id = (card), \
 202        .driver_info = (kernel_ulong_t)(info), }
 203
 204#define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
 205        .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
 206                        PCMCIA_DEV_ID_MATCH_PROD_ID2, \
 207        .prod_id = { (v1), (v2), NULL, NULL }, \
 208        .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
 209        .driver_info = (kernel_ulong_t)(info), }
 210
 211static const struct pcmcia_device_id atmel_ids[] = {
 212        PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
 213        PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
 214        PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
 215        PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
 216        PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
 217        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
 218        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
 219        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
 220        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
 221        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
 222        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
 223        PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
 224        PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
 225        PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
 226        PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
 227        PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
 228        PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
 229        PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
 230        PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
 231        PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
 232        PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
 233        PCMCIA_DEVICE_NULL
 234};
 235
 236MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
 237
 238static struct pcmcia_driver atmel_driver = {
 239        .owner          = THIS_MODULE,
 240        .name           = "atmel_cs",
 241        .probe          = atmel_probe,
 242        .remove         = atmel_detach,
 243        .id_table       = atmel_ids,
 244        .suspend        = atmel_suspend,
 245        .resume         = atmel_resume,
 246};
 247module_pcmcia_driver(atmel_driver);
 248
 249/*
 250    This program is free software; you can redistribute it and/or
 251    modify it under the terms of the GNU General Public License
 252    as published by the Free Software Foundation; either version 2
 253    of the License, or (at your option) any later version.
 254
 255    This program is distributed in the hope that it will be useful,
 256    but WITHOUT ANY WARRANTY; without even the implied warranty of
 257    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 258    GNU General Public License for more details.
 259
 260    In addition:
 261
 262    Redistribution and use in source and binary forms, with or without
 263    modification, are permitted provided that the following conditions
 264    are met:
 265
 266    1. Redistributions of source code must retain the above copyright
 267       notice, this list of conditions and the following disclaimer.
 268    2. Redistributions in binary form must reproduce the above copyright
 269       notice, this list of conditions and the following disclaimer in the
 270       documentation and/or other materials provided with the distribution.
 271    3. The name of the author may not be used to endorse or promote
 272       products derived from this software without specific prior written
 273       permission.
 274
 275    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 276    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 277    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 278    ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 279    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 280    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 281    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 282    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 283    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 284    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 285    POSSIBILITY OF SUCH DAMAGE.
 286*/
 287