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                 wl_device_dealloc(dev);
 181         }
 182
 183         DBG_LEAVE(DbgInfo);
 184 } /* wl_adapter_detach */
 185 /*============================================================================*/
 186
 187
 188 void wl_adapter_release(struct pcmcia_device *link)
 189 {
 190         DBG_FUNC("wl_adapter_release");
 191         DBG_ENTER(DbgInfo);
 192         DBG_PARAM(DbgInfo, "link", "0x%p", link);
 193
 194         /* Stop hardware */
 195         wl_remove(link->priv);
 196
 197         pcmcia_disable_device(link);
 198
 199         DBG_LEAVE(DbgInfo);
 200 } /* wl_adapter_release */
 201 /*============================================================================*/
 202
 203 static int wl_adapter_suspend(struct pcmcia_device *link)
 204 {
 205         struct net_device *dev = link->priv;
 206
 207         /* if (link->open) { */
 208         netif_device_detach(dev);
 209         wl_suspend(dev);
 210         /* CHECK! pcmcia_release_configuration(link->handle); */
 211         /* } */
 212
 213         return 0;
 214 } /* wl_adapter_suspend */
 215
 216 static int wl_adapter_resume(struct pcmcia_device *link)
 217 {
 218         struct net_device *dev = link->priv;
 219
 220         wl_resume(dev);
 221
 222         netif_device_attach(dev);
 223
 224         return 0;
 225 } /* wl_adapter_resume */
 226
 227 void wl_adapter_insert(struct pcmcia_device *link)
 228 {
 229         struct net_device *dev;
 230         int ret;
 231         /*--------------------------------------------------------------------*/
 232
 233         DBG_FUNC("wl_adapter_insert");
 234         DBG_ENTER(DbgInfo);
 235         DBG_PARAM(DbgInfo, "link", "0x%p", link);
 236
 237         dev     = link->priv;
 238
 239         /* Do we need to allocate an interrupt? */
 240         link->config_flags |= CONF_ENABLE_IRQ;
 241         link->io_lines = 6;
 242
 243         ret = pcmcia_request_io(link);
 244         if (ret != 0)
 245                 goto failed;
 246
 247         ret = pcmcia_request_irq(link, (void *) wl_isr);
 248         if (ret != 0)
 249                 goto failed;
 250
 251         ret = pcmcia_enable_device(link);
 252         if (ret != 0)
 253                 goto failed;
 254
 255         dev->irq        = link->irq;
 256         dev->base_addr  = link->resource[0]->start;
 257
 258         SET_NETDEV_DEV(dev, &link->dev);
 259         if (register_netdev(dev) != 0) {
 260                 printk("%s: register_netdev() failed\n", MODULE_NAME);
 261                 goto failed;
 262         }
 263
 264         register_wlags_sysfs(dev);
 265
 266         printk(KERN_INFO "%s: Wireless, io_addr %#03lx, irq %d, mac_address"
 267                 " %pM\n", dev->name, dev->base_addr, dev->irq, dev->dev_addr);
 268
 269         DBG_LEAVE(DbgInfo);
 270         return;
 271
 272 failed:
 273         wl_adapter_release(link);
 274
 275         DBG_LEAVE(DbgInfo);
 276         return;
 277 } /* wl_adapter_insert */
 278 /*============================================================================*/
 279
 280
 281 /*******************************************************************************
 282  *      wl_adapter_open()
 283  *******************************************************************************
 284  *
 285  *  DESCRIPTION:
 286  *
 287  *      Open the device.
 288  *
 289  *  PARAMETERS:
 290  *
 291  *      dev - a pointer to a net_device structure representing the network
 292  *            device to open.
 293  *
 294  *  RETURNS:
 295  *
 296  *      0 on success
 297  *      errno value otherwise
 298  *
 299  ******************************************************************************/
 300 int wl_adapter_open(struct net_device *dev)
 301 {
 302         struct wl_private *lp = wl_priv(dev);
 303         struct pcmcia_device *link = lp->link;
 304         int result = 0;
 305         int hcf_status = HCF_SUCCESS;
 306         /*--------------------------------------------------------------------*/
 307
 308         DBG_FUNC("wl_adapter_open");
 309         DBG_ENTER(DbgInfo);
 310         DBG_PRINT("%s\n", VERSION_INFO);
 311         DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
 312
 313         if (!pcmcia_dev_present(link)) {
 314                 DBG_LEAVE(DbgInfo);
 315                 return -ENODEV;
 316         }
 317
 318         link->open++;
 319
 320         hcf_status = wl_open(dev);
 321
 322         if (hcf_status != HCF_SUCCESS) {
 323                 link->open--;
 324                 result = -ENODEV;
 325         }
 326
 327         DBG_LEAVE(DbgInfo);
 328         return result;
 329 } /* wl_adapter_open */
 330 /*============================================================================*/
 331
 332
 333 /*******************************************************************************
 334  *      wl_adapter_close()
 335  *******************************************************************************
 336  *
 337  *  DESCRIPTION:
 338  *
 339  *      Close the device.
 340  *
 341  *  PARAMETERS:
 342  *
 343  *      dev - a pointer to a net_device structure representing the network
 344  *            device to close.
 345  *
 346  *  RETURNS:
 347  *
 348  *      0 on success
 349  *      errno value otherwise
 350  *
 351  ******************************************************************************/
 352 int wl_adapter_close(struct net_device *dev)
 353 {
 354         struct wl_private *lp = wl_priv(dev);
 355         struct pcmcia_device *link = lp->link;
 356         /*--------------------------------------------------------------------*/
 357
 358         DBG_FUNC("wl_adapter_close");
 359         DBG_ENTER(DbgInfo);
 360         DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
 361
 362         if (link == NULL) {
 363                 DBG_LEAVE(DbgInfo);
 364                 return -ENODEV;
 365         }
 366
 367         DBG_TRACE(DbgInfo, "%s: Shutting down adapter.\n", dev->name);
 368         wl_close(dev);
 369
 370         link->open--;
 371
 372         DBG_LEAVE(DbgInfo);
 373         return 0;
 374 } /* wl_adapter_close */
 375 /*============================================================================*/
 376
 377 static const struct pcmcia_device_id wl_adapter_ids[] = {
 378 #if !((HCF_TYPE) & HCF_TYPE_HII5)
 379         PCMCIA_DEVICE_MANF_CARD(0x0156, 0x0003),
 380         PCMCIA_DEVICE_PROD_ID12("Agere Systems", "Wireless PC Card Model 0110",
 381                                 0x33103a9b, 0xe175b0dd),
 382 #else
 383         PCMCIA_DEVICE_MANF_CARD(0x0156, 0x0004),
 384         PCMCIA_DEVICE_PROD_ID12("Linksys", "WCF54G_Wireless-G_CompactFlash_Card",
 385                                 0x0733cc81, 0x98a599e1),
 386 #endif  /* (HCF_TYPE) & HCF_TYPE_HII5 */
 387         PCMCIA_DEVICE_NULL,
 388 };
 389 MODULE_DEVICE_TABLE(pcmcia, wl_adapter_ids);
 390
 391 static struct pcmcia_driver wlags49_driver = {
 392         .owner      = THIS_MODULE,
 393         .name       = DRIVER_NAME,
 394         .probe      = wl_adapter_attach,
 395         .remove     = wl_adapter_detach,
 396         .id_table   = wl_adapter_ids,
 397         .suspend    = wl_adapter_suspend,
 398         .resume     = wl_adapter_resume,
 399 };
 400
 401
 402
 403 /*******************************************************************************
 404  *      wl_adapter_init_module()
 405  *******************************************************************************
 406  *
 407  *  DESCRIPTION:
 408  *
 409  *      Called by init_module() to perform PCMCIA driver initialization.
 410  *
 411  *  PARAMETERS:
 412  *
 413  *      N/A
 414  *
 415  *  RETURNS:
 416  *
 417  *      0 on success
 418  *      -1 on error
 419  *
 420  ******************************************************************************/
 421 int wl_adapter_init_module(void)
 422 {
 423         int ret;
 424         /*--------------------------------------------------------------------*/
 425
 426         DBG_FUNC("wl_adapter_init_module");
 427         DBG_ENTER(DbgInfo);
 428         DBG_TRACE(DbgInfo, "wl_adapter_init_module() -- PCMCIA\n");
 429
 430         ret = pcmcia_register_driver(&wlags49_driver);
 431
 432         DBG_LEAVE(DbgInfo);
 433         return ret;
 434 } /* wl_adapter_init_module */
 435 /*============================================================================*/
 436
 437
 438 /*******************************************************************************
 439  *      wl_adapter_cleanup_module()
 440  *******************************************************************************
 441  *
 442  *  DESCRIPTION:
 443  *
 444  *      Called by cleanup_module() to perform driver uninitialization.
 445  *
 446  *  PARAMETERS:
 447  *
 448  *      N/A
 449  *
 450  *  RETURNS:
 451  *
 452  *      N/A
 453  *
 454  ******************************************************************************/
 455 void wl_adapter_cleanup_module(void)
 456 {
 457         DBG_FUNC("wl_adapter_cleanup_module");
 458         DBG_ENTER(DbgInfo);
 459         DBG_TRACE(DbgInfo, "wl_adapter_cleanup_module() -- PCMCIA\n");
 460
 461
 462         pcmcia_unregister_driver(&wlags49_driver);
 463
 464         DBG_LEAVE(DbgInfo);
 465         return;
 466 } /* wl_adapter_cleanup_module */
 467 /*============================================================================*/
 468
 469
 470 /*******************************************************************************
 471  *      wl_adapter_is_open()
 472  *******************************************************************************
 473  *
 474  *  DESCRIPTION:
 475  *
 476  *      Check with Card Services to determine if this device is open.
 477  *
 478  *  PARAMETERS:
 479  *
 480  *      dev - a pointer to the net_device structure whose open status will be
 481  *            checked
 482  *
 483  *  RETURNS:
 484  *
 485  *      nonzero if device is open
 486  *      0 otherwise
 487  *
 488  ******************************************************************************/
 489 int wl_adapter_is_open(struct net_device *dev)
 490 {
 491         struct wl_private *lp = wl_priv(dev);
 492         struct pcmcia_device *link = lp->link;
 493
 494         if (!pcmcia_dev_present(link))
 495                 return 0;
 496
 497         return link->open;
 498 } /* wl_adapter_is_open */
 499 /*============================================================================*/