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