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 <asm/system.h>
  52 #include <linux/wireless.h>
  53
  54 #include "atmel.h"
  55
  56
  57 /*====================================================================*/
  58
  59 MODULE_AUTHOR("Simon Kelley");
  60 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  61 MODULE_LICENSE("GPL");
  62 MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
  63
  64 /*====================================================================*/
  65
  66 static int atmel_config(struct pcmcia_device *link);
  67 static void atmel_release(struct pcmcia_device *link);
  68
  69 static void atmel_detach(struct pcmcia_device *p_dev);
  70
  71 typedef struct local_info_t {
  72         struct net_device *eth_dev;
  73 } local_info_t;
  74
  75 static int atmel_probe(struct pcmcia_device *p_dev)
  76 {
  77         local_info_t *local;
  78
  79         dev_dbg(&p_dev->dev, "atmel_attach()\n");
  80
  81         /* Allocate space for private device-specific data */
  82         local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
  83         if (!local) {
  84                 printk(KERN_ERR "atmel_cs: no memory for new device\n");
  85                 return -ENOMEM;
  86         }
  87         p_dev->priv = local;
  88
  89         return atmel_config(p_dev);
  90 } /* atmel_attach */
  91
  92 static void atmel_detach(struct pcmcia_device *link)
  93 {
  94         dev_dbg(&link->dev, "atmel_detach\n");
  95
  96         atmel_release(link);
  97
  98         kfree(link->priv);
  99 }
 100
 101 /* Call-back function to interrogate PCMCIA-specific information
 102    about the current existence of the card */
 103 static int card_present(void *arg)
 104 {
 105         struct pcmcia_device *link = (struct pcmcia_device *)arg;
 106
 107         if (pcmcia_dev_present(link))
 108                 return 1;
 109
 110         return 0;
 111 }
 112
 113 static int atmel_config_check(struct pcmcia_device *p_dev, void *priv_data)
 114 {
 115         if (p_dev->config_index == 0)
 116                 return -EINVAL;
 117
 118         return pcmcia_request_io(p_dev);
 119 }
 120
 121 static int atmel_config(struct pcmcia_device *link)
 122 {
 123         local_info_t *dev;
 124         int ret;
 125         const struct pcmcia_device_id *did;
 126
 127         dev = link->priv;
 128         did = dev_get_drvdata(&link->dev);
 129
 130         dev_dbg(&link->dev, "atmel_config\n");
 131
 132         link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
 133                 CONF_AUTO_AUDIO | CONF_AUTO_SET_IO;
 134
 135         if (pcmcia_loop_config(link, atmel_config_check, NULL))
 136                 goto failed;
 137
 138         if (!link->irq) {
 139                 dev_err(&link->dev, "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
 140                 goto failed;
 141         }
 142
 143         ret = pcmcia_enable_device(link);
 144         if (ret)
 145                 goto failed;
 146
 147         ((local_info_t*)link->priv)->eth_dev =
 148                 init_atmel_card(link->irq,
 149                                 link->resource[0]->start,
 150                                 did ? did->driver_info : ATMEL_FW_TYPE_NONE,
 151                                 &link->dev,
 152                                 card_present,
 153                                 link);
 154         if (!((local_info_t*)link->priv)->eth_dev)
 155                         goto failed;
 156
 157
 158         return 0;
 159
 160  failed:
 161         atmel_release(link);
 162         return -ENODEV;
 163 }
 164
 165 static void atmel_release(struct pcmcia_device *link)
 166 {
 167         struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
 168
 169         dev_dbg(&link->dev, "atmel_release\n");
 170
 171         if (dev)
 172                 stop_atmel_card(dev);
 173         ((local_info_t*)link->priv)->eth_dev = NULL;
 174
 175         pcmcia_disable_device(link);
 176 }
 177
 178 static int atmel_suspend(struct pcmcia_device *link)
 179 {
 180         local_info_t *local = link->priv;
 181
 182         netif_device_detach(local->eth_dev);
 183
 184         return 0;
 185 }
 186
 187 static int atmel_resume(struct pcmcia_device *link)
 188 {
 189         local_info_t *local = link->priv;
 190
 191         atmel_open(local->eth_dev);
 192         netif_device_attach(local->eth_dev);
 193
 194         return 0;
 195 }
 196
 197 /*====================================================================*/
 198 /* We use the driver_info field to store the correct firmware type for a card. */
 199
 200 #define PCMCIA_DEVICE_MANF_CARD_INFO(manf, card, info) { \
 201         .match_flags = PCMCIA_DEV_ID_MATCH_MANF_ID| \
 202                         PCMCIA_DEV_ID_MATCH_CARD_ID, \
 203         .manf_id = (manf), \
 204         .card_id = (card), \
 205         .driver_info = (kernel_ulong_t)(info), }
 206
 207 #define PCMCIA_DEVICE_PROD_ID12_INFO(v1, v2, vh1, vh2, info) { \
 208         .match_flags = PCMCIA_DEV_ID_MATCH_PROD_ID1| \
 209                         PCMCIA_DEV_ID_MATCH_PROD_ID2, \
 210         .prod_id = { (v1), (v2), NULL, NULL }, \
 211         .prod_id_hash = { (vh1), (vh2), 0, 0 }, \
 212         .driver_info = (kernel_ulong_t)(info), }
 213
 214 static const struct pcmcia_device_id atmel_ids[] = {
 215         PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0620, ATMEL_FW_TYPE_502_3COM),
 216         PCMCIA_DEVICE_MANF_CARD_INFO(0x0101, 0x0696, ATMEL_FW_TYPE_502_3COM),
 217         PCMCIA_DEVICE_MANF_CARD_INFO(0x01bf, 0x3302, ATMEL_FW_TYPE_502E),
 218         PCMCIA_DEVICE_MANF_CARD_INFO(0xd601, 0x0007, ATMEL_FW_TYPE_502),
 219         PCMCIA_DEVICE_PROD_ID12_INFO("11WAVE", "11WP611AL-E", 0x9eb2da1f, 0xc9a0d3f9, ATMEL_FW_TYPE_502E),
 220         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR", 0xabda4164, 0x41b37e1f, ATMEL_FW_TYPE_502),
 221         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_D", 0xabda4164, 0x3675d704, ATMEL_FW_TYPE_502D),
 222         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C502AR_E", 0xabda4164, 0x4172e792, ATMEL_FW_TYPE_502E),
 223         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504_R", 0xabda4164, 0x917f3d72, ATMEL_FW_TYPE_504_2958),
 224         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504", 0xabda4164, 0x5040670a, ATMEL_FW_TYPE_504),
 225         PCMCIA_DEVICE_PROD_ID12_INFO("ATMEL", "AT76C504A", 0xabda4164, 0xe15ed87f, ATMEL_FW_TYPE_504A_2958),
 226         PCMCIA_DEVICE_PROD_ID12_INFO("BT", "Voyager 1020 Laptop Adapter", 0xae49b86a, 0x1e957cd5, ATMEL_FW_TYPE_502),
 227         PCMCIA_DEVICE_PROD_ID12_INFO("CNet", "CNWLC 11Mbps Wireless PC Card V-5", 0xbc477dde, 0x502fae6b, ATMEL_FW_TYPE_502E),
 228         PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN PC Card", 0x5b878724, 0x122f1df6, ATMEL_FW_TYPE_502),
 229         PCMCIA_DEVICE_PROD_ID12_INFO("IEEE 802.11b", "Wireless LAN Card S", 0x5b878724, 0x5fba533a, ATMEL_FW_TYPE_504_2958),
 230         PCMCIA_DEVICE_PROD_ID12_INFO("OEM", "11Mbps Wireless LAN PC Card V-3", 0xfea54c90, 0x1c5b0f68, ATMEL_FW_TYPE_502),
 231         PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W", 0xc4f8b18b, 0x30f38774, ATMEL_FW_TYPE_502D),
 232         PCMCIA_DEVICE_PROD_ID12_INFO("SMC", "2632W-V2", 0xc4f8b18b, 0x172d1377, ATMEL_FW_TYPE_502),
 233         PCMCIA_DEVICE_PROD_ID12_INFO("Wireless", "PC_CARD", 0xa407ecdd, 0x119f6314, ATMEL_FW_TYPE_502D),
 234         PCMCIA_DEVICE_PROD_ID12_INFO("WLAN", "802.11b PC CARD", 0x575c516c, 0xb1f6dbc4, ATMEL_FW_TYPE_502D),
 235         PCMCIA_DEVICE_PROD_ID12_INFO("LG", "LW2100N", 0xb474d43a, 0x6b1fec94, ATMEL_FW_TYPE_502E),
 236         PCMCIA_DEVICE_NULL
 237 };
 238
 239 MODULE_DEVICE_TABLE(pcmcia, atmel_ids);
 240
 241 static struct pcmcia_driver atmel_driver = {
 242         .owner          = THIS_MODULE,
 243         .name           = "atmel_cs",
 244         .probe          = atmel_probe,
 245         .remove         = atmel_detach,
 246         .id_table       = atmel_ids,
 247         .suspend        = atmel_suspend,
 248         .resume         = atmel_resume,
 249 };
 250
 251 static int __init atmel_cs_init(void)
 252 {
 253         return pcmcia_register_driver(&atmel_driver);
 254 }
 255
 256 static void __exit atmel_cs_cleanup(void)
 257 {
 258         pcmcia_unregister_driver(&atmel_driver);
 259 }
 260
 261 /*
 262     This program is free software; you can redistribute it and/or
 263     modify it under the terms of the GNU General Public License
 264     as published by the Free Software Foundation; either version 2
 265     of the License, or (at your option) any later version.
 266
 267     This program is distributed in the hope that it will be useful,
 268     but WITHOUT ANY WARRANTY; without even the implied warranty of
 269     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 270     GNU General Public License for more details.
 271
 272     In addition:
 273
 274     Redistribution and use in source and binary forms, with or without
 275     modification, are permitted provided that the following conditions
 276     are met:
 277
 278     1. Redistributions of source code must retain the above copyright
 279        notice, this list of conditions and the following disclaimer.
 280     2. Redistributions in binary form must reproduce the above copyright
 281        notice, this list of conditions and the following disclaimer in the
 282        documentation and/or other materials provided with the distribution.
 283     3. The name of the author may not be used to endorse or promote
 284        products derived from this software without specific prior written
 285        permission.
 286
 287     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 288     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 289     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 290     ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 291     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 292     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 293     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 294     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 295     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 296     IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 297     POSSIBILITY OF SUCH DAMAGE.
 298 */
 299
 300 module_init(atmel_cs_init);
 301 module_exit(atmel_cs_cleanup);