LXR linux/drivers/net/wireless/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, write to the Free Software
  28    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  29
  30******************************************************************************/
  31
  32#ifdef __IN_PCMCIA_PACKAGE__
  33#include <pcmcia/k_compat.h>
  34#endif
  35#include <linux/init.h>
  36#include <linux/kernel.h>
  37#include <linux/module.h>
  38#include <linux/ptrace.h>
  39#include <linux/slab.h>
  40#include <linux/string.h>
  41#include <linux/netdevice.h>
  42#include <linux/moduleparam.h>
  43#include <linux/device.h>
  44
  45#include <pcmcia/cistpl.h>
  46#include <pcmcia/cisreg.h>
  47#include <pcmcia/ds.h>
  48#include <pcmcia/ciscode.h>
  49
  50#include <asm/io.h>
  51#include <linux/wireless.h>
  52
  53#include "atmel.h"
  54
  55
  56/*====================================================================*/
  57
  58MODULE_AUTHOR("Simon Kelley");
  59MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  60MODULE_LICENSE("GPL");
  61MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
  62
  63/*====================================================================*/
  64
  65static int atmel_config(struct pcmcia_device *link);
  66static void atmel_release(struct pcmcia_device *link);
  67
  68static void atmel_detach(struct pcmcia_device *p_dev);
  69
  70typedef struct local_info_t {
  71        struct net_device *eth_dev;
  72} local_info_t;
  73
  74static int atmel_probe(struct pcmcia_device *p_dev)
  75{
  76        local_info_t *local;
  77
  78        dev_dbg(&p_dev->dev, "atmel_attach()\n");
  79
  80        /* Allocate space for private device-specific data */
  81        local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
  82        if (!local)
  83                return -ENOMEM;
  84
  85        p_dev->priv = local;
  86
  87        return atmel_config(p_dev);
  88} /* atmel_attach */
  89
  90static void atmel_detach(struct pcmcia_device *link)
  91{
  92        dev_dbg(&link->dev, "atmel_detach\n");
  93
  94        atmel_release(link);
  95
  96        kfree(link->priv);
  97}
  98
  99/* Call-back function to interrogate PCMCIA-specific information
 100   about the current existence of the card */
 101static int card_present(void *arg)
 102{
 103        struct pcmcia_device *link = (struct pcmcia_device *)arg;
 104
 105        if (pcmcia_dev_present(link))
 106                return 1;
 107
 108        return 0;
 109}
 110
 111static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
 112{
 113        if (p_dev->config_index == 0)
 114                return -EINVAL;
 115
 116        return pcmcia_request_io(p_dev);
 117}
 118
 119static int atmel_config(struct pcmcia_device *link)
 120{
 121        local_info_t *dev;
 122        int ret;
 123        const struct pcmcia_device_id *did;
 124
 125        dev = link->priv;
 126        did = dev_get_drvdata(&link->dev);
 127
 128        dev_dbg(&link->dev, "atmel_config\n");
 129
 130        link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
 131                CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
 132
 133        if (pcmcia_loop_config(link, atmel_config_check, NULL))
 134                goto failed;
 135
 136        if (!link->irq) {
 137                dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
 138                goto failed;
 139        }
 140
 141        ret = pcmcia_enable_device(link);
 142        if (ret)
 143                goto failed;
 144
 145        ((local_info_t*)link->priv)->eth_dev =
 146                init_atmel_card(link->irq,
 147                                link->resource[0]->start,
 148                                did ? did->driver_info : ATMEL_FW_TYPE_NONE,
 149                                &link->dev,
 150                                card_present,
 151                                link);
 152        if (!((local_info_t*)link->priv)->eth_dev)
 153                        goto failed;
 154
 155
 156        return 0;
 157
 158 failed:
 159        atmel_release(link);
 160        return -ENODEV;
 161}
 162
 163static void atmel_release(struct pcmcia_device *link)
 164{
 165        struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
 166
 167        dev_dbg(&link->dev, "atmel_release\n");
 168
 169        if (dev)
 170                stop_atmel_card(dev);
 171        ((local_info_t*)link->priv)->eth_dev = NULL;
 172
 173        pcmcia_disable_device(link);
 174}
 175
 176static int atmel_suspend(struct pcmcia_device *link)
 177{
 178        local_info_t *local = link->priv;
 179
 180        netif_device_detach(local->eth_dev);
 181
 182        return 0;
 183}
 184
 185static int atmel_resume(struct pcmcia_device *link)
 186{
 187        local_info_t *local = link->priv;
 188
 189        atmel_open(local->eth_dev);
 190        netif_device_attach(local->eth_dev);
 191
 192        return 0;
 193}
 194
 195/*====================================================================*/
 196/* We use the driver_info field to store the correct firmware type for a card. */
 197
 198#define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
 199        .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
 200                        PCMCIA_DEV_ID_MATCH_CARD_ID, \
 201        .manf_id = (manf), \
 202        .card_id = (card), \
 203        .driver_info = (kernel_ulong_t)(info), }
 204
 205#define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
 206        .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
 207                        PCMCIA_DEV_ID_MATCH_PROD_ID2, \
 208        .prod_id = { (v1), (v2), NULL, NULL }, \
 209        .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
 210        .driver_info = (kernel_ulong_t)(info), }
 211
 212static const struct pcmcia_device_id atmel_ids[] = {
 213        PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
 214        PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
 215        PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
 216        PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
 217        PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
 218        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
 219        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
 220        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
 221        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
 222        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
 223        PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
 224        PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
 225        PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
 226        PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
 227        PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
 228        PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
 229        PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
 230        PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
 231        PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
 232        PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
 233        PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
 234        PCMCIA_DEVICE_NULL
 235};
 236
 237MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
 238
 239static struct pcmcia_driver atmel_driver = {
 240        .owner          = THIS_MODULE,
 241        .name           = "atmel_cs",
 242        .probe          = atmel_probe,
 243        .remove         = atmel_detach,
 244        .id_table       = atmel_ids,
 245        .suspend        = atmel_suspend,
 246        .resume         = atmel_resume,
 247};
 248module_pcmcia_driver(atmel_driver);
 249
 250/*
 251    This program is free software; you can redistribute it and/or
 252    modify it under the terms of the GNU General Public License
 253    as published by the Free Software Foundation; either version 2
 254    of the License, or (at your option) any later version.
 255
 256    This program is distributed in the hope that it will be useful,
 257    but WITHOUT ANY WARRANTY; without even the implied warranty of
 258    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 259    GNU General Public License for more details.
 260
 261    In addition:
 262
 263    Redistribution and use in source and binary forms, with or without
 264    modification, are permitted provided that the following conditions
 265    are met:
 266
 267    1. Redistributions of source code must retain the above copyright
 268       notice, this list of conditions and the following disclaimer.
 269    2. Redistributions in binary form must reproduce the above copyright
 270       notice, this list of conditions and the following disclaimer in the
 271       documentation and/or other materials provided with the distribution.
 272    3. The name of the author may not be used to endorse or promote
 273       products derived from this software without specific prior written
 274       permission.
 275
 276    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 277    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 278    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 279    ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 280    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 281    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 282    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 283    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 284    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 285    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 286    POSSIBILITY OF SUCH DAMAGE.
 287*/
 288