drivers/staging/wlags49_h2/wl_cs.c

   1 /*******************************************************************************
   2  * Agere Systems Inc.
   3  * Wireless device driver for Linux (wlags49).
   4  *
   5  * Copyright (c) 1998-2003 Agere Systems Inc.
   6  * All rights reserved.
   7  *   http://www.agere.com
   8  *
   9  * Initially developed by TriplePoint, Inc.
  10  *   http://www.triplepoint.com
  11  *
  12  *------------------------------------------------------------------------------
  13  *
  14  *   This file contains processing and initialization specific to Card Services
  15  *   devices (PCMCIA, CF).
  16  *
  17  *------------------------------------------------------------------------------
  18  *
  19  * SOFTWARE LICENSE
  20  *
  21  * This software is provided subject to the following terms and conditions,
  22  * which you should read carefully before using the software.  Using this
  23  * software indicates your acceptance of these terms and conditions.  If you do
  24  * not agree with these terms and conditions, do not use the software.
  25  *
  26  * Copyright (c) 2003 Agere Systems Inc.
  27  * All rights reserved.
  28  *
  29  * Redistribution and use in source or binary forms, with or without
  30  * modifications, are permitted provided that the following conditions are met:
  31  *
  32  * . Redistributions of source code must retain the above copyright notice, this
  33  *    list of conditions and the following Disclaimer as comments in the code as
  34  *    well as in the documentation and/or other materials provided with the
  35  *    distribution.
  36  *
  37  * . Redistributions in binary form must reproduce the above copyright notice,
  38  *    this list of conditions and the following Disclaimer in the documentation
  39  *    and/or other materials provided with the distribution.
  40  *
  41  * . Neither the name of Agere Systems Inc. nor the names of the contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * Disclaimer
  46  *
  47  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  48  * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
  49  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
  50  * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
  51  * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
  52  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  53  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  54  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  55  * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  57  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  58  * DAMAGE.
  59  *
  60  ******************************************************************************/
  61
  62 /*******************************************************************************
  63  *  include files
  64  ******************************************************************************/
  65 #include <wl_version.h>
  66
  67 #include <linux/kernel.h>
  68 #include <linux/sched.h>
  69 #include <linux/ptrace.h>
  70 #include <linux/ctype.h>
  71 #include <linux/string.h>
  72 #include <linux/timer.h>
  73 #include <linux/interrupt.h>
  74 #include <linux/in.h>
  75 #include <linux/delay.h>
  76 #include <asm/io.h>
  77 #include <asm/bitops.h>
  78
  79 #include <linux/netdevice.h>
  80 #include <linux/etherdevice.h>
  81 #include <linux/skbuff.h>
  82 #include <linux/if_arp.h>
  83 #include <linux/ioport.h>
  84 #include <linux/module.h>
  85
  86 #include <pcmcia/cistpl.h>
  87 #include <pcmcia/cisreg.h>
  88 #include <pcmcia/ciscode.h>
  89 #include <pcmcia/ds.h>
  90 #include <debug.h>
  91
  92 #include <hcf.h>
  93 #include <dhf.h>
  94 #include <hcfdef.h>
  95
  96 #include <wl_if.h>
  97 #include <wl_internal.h>
  98 #include <wl_util.h>
  99 #include <wl_main.h>
 100 #include <wl_netdev.h>
 101 #include <wl_cs.h>
 102 #include <wl_sysfs.h>
 103
 104
 105 /*******************************************************************************
 106  *  global definitions
 107  ******************************************************************************/
 108 #if DBG
 109 extern dbg_info_t *DbgInfo;
 110 #endif  /* DBG */
 111
 112
 113 /*******************************************************************************
 114  *      wl_adapter_attach()
 115  *******************************************************************************
 116  *
 117  *  DESCRIPTION:
 118  *
 119  *      Creates an instance of the driver, allocating local data structures for
 120  *  one device. The device is registered with Card Services.
 121  *
 122  *  PARAMETERS:
 123  *
 124  *      none
 125  *
 126  *  RETURNS:
 127  *
 128  *      pointer to an allocated dev_link_t structure
 129  *      NULL on failure
 130  *
 131  ******************************************************************************/
 132 static int wl_adapter_attach(struct pcmcia_device *link)
 133 {
 134         struct net_device   *dev;
 135         struct wl_private   *lp;
 136         /*--------------------------------------------------------------------*/
 137
 138         DBG_FUNC("wl_adapter_attach");
 139         DBG_ENTER(DbgInfo);
 140
 141         dev = wl_device_alloc();
 142         if (dev == NULL) {
 143                 DBG_ERROR(DbgInfo, "wl_device_alloc returned NULL\n");
 144                 return -ENOMEM;
 145         }
 146
 147         link->resource[0]->end  = HCF_NUM_IO_PORTS;
 148         link->resource[0]->flags= IO_DATA_PATH_WIDTH_16;
 149         link->config_flags     |= CONF_ENABLE_IRQ;
 150         link->config_index      = 5;
 151         link->config_regs       = PRESENT_OPTION;
 152
 153         link->priv = dev;
 154         lp = wl_priv(dev);
 155         lp->link = link;
 156
 157         wl_adapter_insert(link);
 158
 159         DBG_LEAVE(DbgInfo);
 160         return 0;
 161 } /* wl_adapter_attach */
 162 /*============================================================================*/
 163
 164
 165
 166 static void wl_adapter_detach(struct pcmcia_device *link)
 167 {
 168         struct net_device   *dev = link->priv;
 169         /*--------------------------------------------------------------------*/
 170
 171         DBG_FUNC("wl_adapter_detach");
 172         DBG_ENTER(DbgInfo);
 173         DBG_PARAM(DbgInfo, "link", "0x%p", link);
 174
 175         wl_adapter_release(link);
 176
 177         if (dev) {
 178                 unregister_wlags_sysfs(dev);
 179                 unregister_netdev(dev);
 180         }
 181
 182         wl_device_dealloc(dev);
 183
 184         DBG_LEAVE(DbgInfo);
 185 } /* wl_adapter_detach */
 186 /*============================================================================*/
 187
 188
 189 void wl_adapter_release(struct pcmcia_device *link)
 190 {
 191         DBG_FUNC("wl_adapter_release");
 192         DBG_ENTER(DbgInfo);
 193         DBG_PARAM(DbgInfo, "link", "0x%p", link);
 194
 195         /* Stop hardware */
 196         wl_remove(link->priv);
 197
 198         pcmcia_disable_device(link);
 199
 200         DBG_LEAVE(DbgInfo);
 201 } /* wl_adapter_release */
 202 /*============================================================================*/
 203
 204 static int wl_adapter_suspend(struct pcmcia_device *link)
 205 {
 206         struct net_device *dev = link->priv;
 207
 208         /* if (link->open) { */
 209         netif_device_detach(dev);
 210         wl_suspend(dev);
 211         /* CHECK! pcmcia_release_configuration(link->handle); */
 212         /* } */
 213
 214         return 0;
 215 } /* wl_adapter_suspend */
 216
 217 static int wl_adapter_resume(struct pcmcia_device *link)
 218 {
 219         struct net_device *dev = link->priv;
 220
 221         wl_resume(dev);
 222
 223         netif_device_attach(dev);
 224
 225         return 0;
 226 } /* wl_adapter_resume */
 227
 228 void wl_adapter_insert(struct pcmcia_device *link)
 229 {
 230         struct net_device *dev;
 231         int ret;
 232         /*--------------------------------------------------------------------*/
 233
 234         DBG_FUNC("wl_adapter_insert");
 235         DBG_ENTER(DbgInfo);
 236         DBG_PARAM(DbgInfo, "link", "0x%p", link);
 237
 238         dev     = link->priv;
 239
 240         /* Do we need to allocate an interrupt? */
 241         link->config_flags |= CONF_ENABLE_IRQ;
 242         link->io_lines = 6;
 243
 244         ret = pcmcia_request_io(link);
 245         if (ret != 0)
 246                 goto failed;
 247
 248         ret = pcmcia_request_irq(link, (void *) wl_isr);
 249         if (ret != 0)
 250                 goto failed;
 251
 252         ret = pcmcia_enable_device(link);
 253         if (ret != 0)
 254                 goto failed;
 255
 256         dev->irq        = link->irq;
 257         dev->base_addr  = link->resource[0]->start;
 258
 259         SET_NETDEV_DEV(dev, &link->dev);
 260         if (register_netdev(dev) != 0) {
 261                 printk("%s: register_netdev() failed\n", MODULE_NAME);
 262                 goto failed;
 263         }
 264
 265         register_wlags_sysfs(dev);
 266
 267         printk(KERN_INFO "%s: Wireless, io_addr %#03lx, irq %d, mac_address"
 268                 " %pM\n", dev->name, dev->base_addr, dev->irq, dev->dev_addr);
 269
 270         DBG_LEAVE(DbgInfo);
 271         return;
 272
 273 failed:
 274         wl_adapter_release(link);
 275
 276         DBG_LEAVE(DbgInfo);
 277         return;
 278 } /* wl_adapter_insert */
 279 /*============================================================================*/
 280
 281
 282 /*******************************************************************************
 283  *      wl_adapter_open()
 284  *******************************************************************************
 285  *
 286  *  DESCRIPTION:
 287  *
 288  *      Open the device.
 289  *
 290  *  PARAMETERS:
 291  *
 292  *      dev - a pointer to a net_device structure representing the network
 293  *            device to open.
 294  *
 295  *  RETURNS:
 296  *
 297  *      0 on success
 298  *      errno value otherwise
 299  *
 300  ******************************************************************************/
 301 int wl_adapter_open(struct net_device *dev)
 302 {
 303         struct wl_private *lp = wl_priv(dev);
 304         struct pcmcia_device *link = lp->link;
 305         int result = 0;
 306         int hcf_status = HCF_SUCCESS;
 307         /*--------------------------------------------------------------------*/
 308
 309         DBG_FUNC("wl_adapter_open");
 310         DBG_ENTER(DbgInfo);
 311         DBG_PRINT("%s\n", VERSION_INFO);
 312         DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
 313
 314         if (!pcmcia_dev_present(link)) {
 315                 DBG_LEAVE(DbgInfo);
 316                 return -ENODEV;
 317         }
 318
 319         link->open++;
 320
 321         hcf_status = wl_open(dev);
 322
 323         if (hcf_status != HCF_SUCCESS) {
 324                 link->open--;
 325                 result = -ENODEV;
 326         }
 327
 328         DBG_LEAVE(DbgInfo);
 329         return result;
 330 } /* wl_adapter_open */
 331 /*============================================================================*/
 332
 333
 334 /*******************************************************************************
 335  *      wl_adapter_close()
 336  *******************************************************************************
 337  *
 338  *  DESCRIPTION:
 339  *
 340  *      Close the device.
 341  *
 342  *  PARAMETERS:
 343  *
 344  *      dev - a pointer to a net_device structure representing the network
 345  *            device to close.
 346  *
 347  *  RETURNS:
 348  *
 349  *      0 on success
 350  *      errno value otherwise
 351  *
 352  ******************************************************************************/
 353 int wl_adapter_close(struct net_device *dev)
 354 {
 355         struct wl_private *lp = wl_priv(dev);
 356         struct pcmcia_device *link = lp->link;
 357         /*--------------------------------------------------------------------*/
 358
 359         DBG_FUNC("wl_adapter_close");
 360         DBG_ENTER(DbgInfo);
 361         DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
 362
 363         if (link == NULL) {
 364                 DBG_LEAVE(DbgInfo);
 365                 return -ENODEV;
 366         }
 367
 368         DBG_TRACE(DbgInfo, "%s: Shutting down adapter.\n", dev->name);
 369         wl_close(dev);
 370
 371         link->open--;
 372
 373         DBG_LEAVE(DbgInfo);
 374         return 0;
 375 } /* wl_adapter_close */
 376 /*============================================================================*/
 377
 378 static const struct pcmcia_device_id wl_adapter_ids[] = {
 379 #if !((HCF_TYPE) & HCF_TYPE_HII5)
 380         PCMCIA_DEVICE_MANF_CARD(0x0156, 0x0003),
 381         PCMCIA_DEVICE_PROD_ID12("Agere Systems", "Wireless PC Card Model 0110",
 382                                 0x33103a9b, 0xe175b0dd),
 383 #else
 384         PCMCIA_DEVICE_MANF_CARD(0x0156, 0x0004),
 385         PCMCIA_DEVICE_PROD_ID12("Linksys", "WCF54G_Wireless-G_CompactFlash_Card",
 386                                 0x0733cc81, 0x98a599e1),
 387 #endif  /* (HCF_TYPE) & HCF_TYPE_HII5 */
 388         PCMCIA_DEVICE_NULL,
 389 };
 390 MODULE_DEVICE_TABLE(pcmcia, wl_adapter_ids);
 391
 392 static struct pcmcia_driver wlags49_driver = {
 393         .owner      = THIS_MODULE,
 394         .name       = DRIVER_NAME,
 395         .probe      = wl_adapter_attach,
 396         .remove     = wl_adapter_detach,
 397         .id_table   = wl_adapter_ids,
 398         .suspend    = wl_adapter_suspend,
 399         .resume     = wl_adapter_resume,
 400 };
 401
 402
 403
 404 /*******************************************************************************
 405  *      wl_adapter_init_module()
 406  *******************************************************************************
 407  *
 408  *  DESCRIPTION:
 409  *
 410  *      Called by init_module() to perform PCMCIA driver initialization.
 411  *
 412  *  PARAMETERS:
 413  *
 414  *      N/A
 415  *
 416  *  RETURNS:
 417  *
 418  *      0 on success
 419  *      -1 on error
 420  *
 421  ******************************************************************************/
 422 int wl_adapter_init_module(void)
 423 {
 424         int ret;
 425         /*--------------------------------------------------------------------*/
 426
 427         DBG_FUNC("wl_adapter_init_module");
 428         DBG_ENTER(DbgInfo);
 429         DBG_TRACE(DbgInfo, "wl_adapter_init_module() -- PCMCIA\n");
 430
 431         ret = pcmcia_register_driver(&wlags49_driver);
 432
 433         DBG_LEAVE(DbgInfo);
 434         return ret;
 435 } /* wl_adapter_init_module */
 436 /*============================================================================*/
 437
 438
 439 /*******************************************************************************
 440  *      wl_adapter_cleanup_module()
 441  *******************************************************************************
 442  *
 443  *  DESCRIPTION:
 444  *
 445  *      Called by cleanup_module() to perform driver uninitialization.
 446  *
 447  *  PARAMETERS:
 448  *
 449  *      N/A
 450  *
 451  *  RETURNS:
 452  *
 453  *      N/A
 454  *
 455  ******************************************************************************/
 456 void wl_adapter_cleanup_module(void)
 457 {
 458         DBG_FUNC("wl_adapter_cleanup_module");
 459         DBG_ENTER(DbgInfo);
 460         DBG_TRACE(DbgInfo, "wl_adapter_cleanup_module() -- PCMCIA\n");
 461
 462
 463         pcmcia_unregister_driver(&wlags49_driver);
 464
 465         DBG_LEAVE(DbgInfo);
 466         return;
 467 } /* wl_adapter_cleanup_module */
 468 /*============================================================================*/
 469
 470
 471 /*******************************************************************************
 472  *      wl_adapter_is_open()
 473  *******************************************************************************
 474  *
 475  *  DESCRIPTION:
 476  *
 477  *      Check with Card Services to determine if this device is open.
 478  *
 479  *  PARAMETERS:
 480  *
 481  *      dev - a pointer to the net_device structure whose open status will be
 482  *            checked
 483  *
 484  *  RETURNS:
 485  *
 486  *      nonzero if device is open
 487  *      0 otherwise
 488  *
 489  ******************************************************************************/
 490 int wl_adapter_is_open(struct net_device *dev)
 491 {
 492         struct wl_private *lp = wl_priv(dev);
 493         struct pcmcia_device *link = lp->link;
 494
 495         if (!pcmcia_dev_present(link))
 496                 return 0;
 497
 498         return link->open;
 499 } /* wl_adapter_is_open */
 500 /*============================================================================*/