drivers/net/wireless/atmel_cs.c

   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
  58 MODULE_AUTHOR("Simon Kelley");
  59 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  60 MODULE_LICENSE("GPL");
  61 MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
  62
  63 /*====================================================================*/
  64
  65 static int atmel_config(struct pcmcia_device *link);
  66 static void atmel_release(struct pcmcia_device *link);
  67
  68 static void atmel_detach(struct pcmcia_device *p_dev);
  69
  70 typedef struct local_info_t {
  71         struct net_device *eth_dev;
  72 } local_info_t;
  73
  74 static 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
  90 static 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 */
 101 static 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
 111 static 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
 119 static 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
 163 static 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
 176 static 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
 185 static 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
 212 static 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
 237 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
 238
 239 static 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 };
 248 module_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 */