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                 printk(KERN_ERR "atmel_cs: no memory for new device\n");
  84                 return -ENOMEM;
  85         }
  86         p_dev->priv = local;
  87
  88         return atmel_config(p_dev);
  89 } /* atmel_attach */
  90
  91 static void atmel_detach(struct pcmcia_device *link)
  92 {
  93         dev_dbg(&link->dev, "atmel_detach\n");
  94
  95         atmel_release(link);
  96
  97         kfree(link->priv);
  98 }
  99
 100 /* Call-back function to interrogate PCMCIA-specific information
 101    about the current existence of the card */
 102 static int card_present(void *arg)
 103 {
 104         struct pcmcia_device *link = (struct pcmcia_device *)arg;
 105
 106         if (pcmcia_dev_present(link))
 107                 return 1;
 108
 109         return 0;
 110 }
 111
 112 static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
 113 {
 114         if (p_dev->config_index == 0)
 115                 return -EINVAL;
 116
 117         return pcmcia_request_io(p_dev);
 118 }
 119
 120 static int atmel_config(struct pcmcia_device *link)
 121 {
 122         local_info_t *dev;
 123         int ret;
 124         const struct pcmcia_device_id *did;
 125
 126         dev = link->priv;
 127         did = dev_get_drvdata(&link->dev);
 128
 129         dev_dbg(&link->dev, "atmel_config\n");
 130
 131         link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
 132                 CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
 133
 134         if (pcmcia_loop_config(link, atmel_config_check, NULL))
 135                 goto failed;
 136
 137         if (!link->irq) {
 138                 dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
 139                 goto failed;
 140         }
 141
 142         ret = pcmcia_enable_device(link);
 143         if (ret)
 144                 goto failed;
 145
 146         ((local_info_t*)link->priv)->eth_dev =
 147                 init_atmel_card(link->irq,
 148                                 link->resource[0]->start,
 149                                 did ? did->driver_info : ATMEL_FW_TYPE_NONE,
 150                                 &link->dev,
 151                                 card_present,
 152                                 link);
 153         if (!((local_info_t*)link->priv)->eth_dev)
 154                         goto failed;
 155
 156
 157         return 0;
 158
 159  failed:
 160         atmel_release(link);
 161         return -ENODEV;
 162 }
 163
 164 static void atmel_release(struct pcmcia_device *link)
 165 {
 166         struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
 167
 168         dev_dbg(&link->dev, "atmel_release\n");
 169
 170         if (dev)
 171                 stop_atmel_card(dev);
 172         ((local_info_t*)link->priv)->eth_dev = NULL;
 173
 174         pcmcia_disable_device(link);
 175 }
 176
 177 static int atmel_suspend(struct pcmcia_device *link)
 178 {
 179         local_info_t *local = link->priv;
 180
 181         netif_device_detach(local->eth_dev);
 182
 183         return 0;
 184 }
 185
 186 static int atmel_resume(struct pcmcia_device *link)
 187 {
 188         local_info_t *local = link->priv;
 189
 190         atmel_open(local->eth_dev);
 191         netif_device_attach(local->eth_dev);
 192
 193         return 0;
 194 }
 195
 196 /*====================================================================*/
 197 /* We use the driver_info field to store the correct firmware type for a card. */
 198
 199 #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
 200         .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
 201                         PCMCIA_DEV_ID_MATCH_CARD_ID, \
 202         .manf_id = (manf), \
 203         .card_id = (card), \
 204         .driver_info = (kernel_ulong_t)(info), }
 205
 206 #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
 207         .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
 208                         PCMCIA_DEV_ID_MATCH_PROD_ID2, \
 209         .prod_id = { (v1), (v2), NULL, NULL }, \
 210         .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
 211         .driver_info = (kernel_ulong_t)(info), }
 212
 213 static const struct pcmcia_device_id atmel_ids[] = {
 214         PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
 215         PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
 216         PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
 217         PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
 218         PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
 219         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
 220         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
 221         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
 222         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
 223         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
 224         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
 225         PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
 226         PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
 227         PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
 228         PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
 229         PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
 230         PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
 231         PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
 232         PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
 233         PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
 234         PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
 235         PCMCIA_DEVICE_NULL
 236 };
 237
 238 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
 239
 240 static struct pcmcia_driver atmel_driver = {
 241         .owner          = THIS_MODULE,
 242         .name           = "atmel_cs",
 243         .probe          = atmel_probe,
 244         .remove         = atmel_detach,
 245         .id_table       = atmel_ids,
 246         .suspend        = atmel_suspend,
 247         .resume         = atmel_resume,
 248 };
 249
 250 static int __init atmel_cs_init(void)
 251 {
 252         return pcmcia_register_driver(&atmel_driver);
 253 }
 254
 255 static void __exit atmel_cs_cleanup(void)
 256 {
 257         pcmcia_unregister_driver(&atmel_driver);
 258 }
 259
 260 /*
 261     This program is free software; you can redistribute it and/or
 262     modify it under the terms of the GNU General Public License
 263     as published by the Free Software Foundation; either version 2
 264     of the License, or (at your option) any later version.
 265
 266     This program is distributed in the hope that it will be useful,
 267     but WITHOUT ANY WARRANTY; without even the implied warranty of
 268     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 269     GNU General Public License for more details.
 270
 271     In addition:
 272
 273     Redistribution and use in source and binary forms, with or without
 274     modification, are permitted provided that the following conditions
 275     are met:
 276
 277     1. Redistributions of source code must retain the above copyright
 278        notice, this list of conditions and the following disclaimer.
 279     2. Redistributions in binary form must reproduce the above copyright
 280        notice, this list of conditions and the following disclaimer in the
 281        documentation and/or other materials provided with the distribution.
 282     3. The name of the author may not be used to endorse or promote
 283        products derived from this software without specific prior written
 284        permission.
 285
 286     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 287     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 288     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 289     ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 290     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 291     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 292     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 293     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 294     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 295     IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 296     POSSIBILITY OF SUCH DAMAGE.
 297 */
 298
 299 module_init(atmel_cs_init);
 300 module_exit(atmel_cs_cleanup);