kernel/drivers/staging/wlan-ng/prism2sta.c

   1 /* src/prism2/driver/prism2sta.c
   2  *
   3  * Implements the station functionality for prism2
   4  *
   5  * Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
   6  * --------------------------------------------------------------------
   7  *
   8  * linux-wlan
   9  *
  10  *   The contents of this file are subject to the Mozilla Public
  11  *   License Version 1.1 (the "License"); you may not use this file
  12  *   except in compliance with the License. You may obtain a copy of
  13  *   the License at http://www.mozilla.org/MPL/
  14  *
  15  *   Software distributed under the License is distributed on an "AS
  16  *   IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  17  *   implied. See the License for the specific language governing
  18  *   rights and limitations under the License.
  19  *
  20  *   Alternatively, the contents of this file may be used under the
  21  *   terms of the GNU Public License version 2 (the "GPL"), in which
  22  *   case the provisions of the GPL are applicable instead of the
  23  *   above.  If you wish to allow the use of your version of this file
  24  *   only under the terms of the GPL and not to allow others to use
  25  *   your version of this file under the MPL, indicate your decision
  26  *   by deleting the provisions above and replace them with the notice
  27  *   and other provisions required by the GPL.  If you do not delete
  28  *   the provisions above, a recipient may use your version of this
  29  *   file under either the MPL or the GPL.
  30  *
  31  * --------------------------------------------------------------------
  32  *
  33  * Inquiries regarding the linux-wlan Open Source project can be
  34  * made directly to:
  35  *
  36  * AbsoluteValue Systems Inc.
  37  * info@linux-wlan.com
  38  * http://www.linux-wlan.com
  39  *
  40  * --------------------------------------------------------------------
  41  *
  42  * Portions of the development of this software were funded by
  43  * Intersil Corporation as part of PRISM(R) chipset product development.
  44  *
  45  * --------------------------------------------------------------------
  46  *
  47  * This file implements the module and linux pcmcia routines for the
  48  * prism2 driver.
  49  *
  50  * --------------------------------------------------------------------
  51  */
  52
  53 #include <linux/module.h>
  54 #include <linux/kernel.h>
  55 #include <linux/sched.h>
  56 #include <linux/types.h>
  57 #include <linux/slab.h>
  58 #include <linux/wireless.h>
  59 #include <linux/netdevice.h>
  60 #include <linux/workqueue.h>
  61 #include <linux/byteorder/generic.h>
  62 #include <linux/etherdevice.h>
  63
  64 #include <linux/io.h>
  65 #include <linux/delay.h>
  66 #include <asm/byteorder.h>
  67 #include <linux/if_arp.h>
  68 #include <linux/if_ether.h>
  69 #include <linux/bitops.h>
  70
  71 #include "p80211types.h"
  72 #include "p80211hdr.h"
  73 #include "p80211mgmt.h"
  74 #include "p80211conv.h"
  75 #include "p80211msg.h"
  76 #include "p80211netdev.h"
  77 #include "p80211req.h"
  78 #include "p80211metadef.h"
  79 #include "p80211metastruct.h"
  80 #include "hfa384x.h"
  81 #include "prism2mgmt.h"
  82
  83 static char *dev_info = "prism2_usb";
  84 static wlandevice_t *create_wlan(void);
  85
  86 int prism2_reset_holdtime = 30; /* Reset hold time in ms */
  87 int prism2_reset_settletime = 100;      /* Reset settle time in ms */
  88
  89 static int prism2_doreset;      /* Do a reset at init? */
  90
  91 module_param(prism2_doreset, int, 0644);
  92 MODULE_PARM_DESC(prism2_doreset, "Issue a reset on initialization");
  93
  94 module_param(prism2_reset_holdtime, int, 0644);
  95 MODULE_PARM_DESC(prism2_reset_holdtime, "reset hold time in ms");
  96 module_param(prism2_reset_settletime, int, 0644);
  97 MODULE_PARM_DESC(prism2_reset_settletime, "reset settle time in ms");
  98
  99 MODULE_LICENSE("Dual MPL/GPL");
 100
 101 static int prism2sta_open(wlandevice_t *wlandev);
 102 static int prism2sta_close(wlandevice_t *wlandev);
 103 static void prism2sta_reset(wlandevice_t *wlandev);
 104 static int prism2sta_txframe(wlandevice_t *wlandev, struct sk_buff *skb,
 105                              union p80211_hdr *p80211_hdr,
 106                              struct p80211_metawep *p80211_wep);
 107 static int prism2sta_mlmerequest(wlandevice_t *wlandev, struct p80211msg *msg);
 108 static int prism2sta_getcardinfo(wlandevice_t *wlandev);
 109 static int prism2sta_globalsetup(wlandevice_t *wlandev);
 110 static int prism2sta_setmulticast(wlandevice_t *wlandev, netdevice_t *dev);
 111
 112 static void prism2sta_inf_handover(wlandevice_t *wlandev,
 113                                    hfa384x_InfFrame_t *inf);
 114 static void prism2sta_inf_tallies(wlandevice_t *wlandev,
 115                                   hfa384x_InfFrame_t *inf);
 116 static void prism2sta_inf_hostscanresults(wlandevice_t *wlandev,
 117                                           hfa384x_InfFrame_t *inf);
 118 static void prism2sta_inf_scanresults(wlandevice_t *wlandev,
 119                                       hfa384x_InfFrame_t *inf);
 120 static void prism2sta_inf_chinforesults(wlandevice_t *wlandev,
 121                                         hfa384x_InfFrame_t *inf);
 122 static void prism2sta_inf_linkstatus(wlandevice_t *wlandev,
 123                                      hfa384x_InfFrame_t *inf);
 124 static void prism2sta_inf_assocstatus(wlandevice_t *wlandev,
 125                                       hfa384x_InfFrame_t *inf);
 126 static void prism2sta_inf_authreq(wlandevice_t *wlandev,
 127                                   hfa384x_InfFrame_t *inf);
 128 static void prism2sta_inf_authreq_defer(wlandevice_t *wlandev,
 129                                         hfa384x_InfFrame_t *inf);
 130 static void prism2sta_inf_psusercnt(wlandevice_t *wlandev,
 131                                     hfa384x_InfFrame_t *inf);
 132
 133 /*
 134  * prism2sta_open
 135  *
 136  * WLAN device open method.  Called from p80211netdev when kernel
 137  * device open (start) method is called in response to the
 138  * SIOCSIIFFLAGS ioctl changing the flags bit IFF_UP
 139  * from clear to set.
 140  *
 141  * Arguments:
 142  *      wlandev         wlan device structure
 143  *
 144  * Returns:
 145  *      0       success
 146  *      >0      f/w reported error
 147  *      <0      driver reported error
 148  *
 149  * Side effects:
 150  *
 151  * Call context:
 152  *      process thread
 153  */
 154 static int prism2sta_open(wlandevice_t *wlandev)
 155 {
 156         /* We don't currently have to do anything else.
 157          * The setup of the MAC should be subsequently completed via
 158          * the mlme commands.
 159          * Higher layers know we're ready from dev->start==1 and
 160          * dev->tbusy==0.  Our rx path knows to pass up received/
 161          * frames because of dev->flags&IFF_UP is true.
 162          */
 163
 164         return 0;
 165 }
 166
 167 /*
 168  * prism2sta_close
 169  *
 170  * WLAN device close method.  Called from p80211netdev when kernel
 171  * device close method is called in response to the
 172  * SIOCSIIFFLAGS ioctl changing the flags bit IFF_UP
 173  * from set to clear.
 174  *
 175  * Arguments:
 176  *      wlandev         wlan device structure
 177  *
 178  * Returns:
 179  *      0       success
 180  *      >0      f/w reported error
 181  *      <0      driver reported error
 182  *
 183  * Side effects:
 184  *
 185  * Call context:
 186  *      process thread
 187  */
 188 static int prism2sta_close(wlandevice_t *wlandev)
 189 {
 190         /* We don't currently have to do anything else.
 191          * Higher layers know we're not ready from dev->start==0 and
 192          * dev->tbusy==1.  Our rx path knows to not pass up received
 193          * frames because of dev->flags&IFF_UP is false.
 194          */
 195
 196         return 0;
 197 }
 198
 199 /*
 200  * prism2sta_reset
 201  *
 202  * Currently not implemented.
 203  *
 204  * Arguments:
 205  *      wlandev         wlan device structure
 206  *      none
 207  *
 208  * Returns:
 209  *      nothing
 210  *
 211  * Side effects:
 212  *
 213  * Call context:
 214  *      process thread
 215  */
 216 static void prism2sta_reset(wlandevice_t *wlandev)
 217 {
 218 }
 219
 220 /*
 221  * prism2sta_txframe
 222  *
 223  * Takes a frame from p80211 and queues it for transmission.
 224  *
 225  * Arguments:
 226  *      wlandev         wlan device structure
 227  *      pb              packet buffer struct.  Contains an 802.11
 228  *                      data frame.
 229  *       p80211_hdr      points to the 802.11 header for the packet.
 230  * Returns:
 231  *      0               Success and more buffs available
 232  *      1               Success but no more buffs
 233  *      2               Allocation failure
 234  *      4               Buffer full or queue busy
 235  *
 236  * Side effects:
 237  *
 238  * Call context:
 239  *      process thread
 240  */
 241 static int prism2sta_txframe(wlandevice_t *wlandev, struct sk_buff *skb,
 242                              union p80211_hdr *p80211_hdr,
 243                              struct p80211_metawep *p80211_wep)
 244 {
 245         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
 246
 247         /* If necessary, set the 802.11 WEP bit */
 248         if ((wlandev->hostwep & (HOSTWEP_PRIVACYINVOKED | HOSTWEP_ENCRYPT)) ==
 249             HOSTWEP_PRIVACYINVOKED) {
 250                 p80211_hdr->a3.fc |= cpu_to_le16(WLAN_SET_FC_ISWEP(1));
 251         }
 252
 253         return hfa384x_drvr_txframe(hw, skb, p80211_hdr, p80211_wep);
 254 }
 255
 256 /*
 257  * prism2sta_mlmerequest
 258  *
 259  * wlan command message handler.  All we do here is pass the message
 260  * over to the prism2sta_mgmt_handler.
 261  *
 262  * Arguments:
 263  *      wlandev         wlan device structure
 264  *      msg             wlan command message
 265  * Returns:
 266  *      0               success
 267  *      <0              successful acceptance of message, but we're
 268  *                      waiting for an async process to finish before
 269  *                      we're done with the msg.  When the asynch
 270  *                      process is done, we'll call the p80211
 271  *                      function p80211req_confirm() .
 272  *      >0              An error occurred while we were handling
 273  *                      the message.
 274  *
 275  * Side effects:
 276  *
 277  * Call context:
 278  *      process thread
 279  */
 280 static int prism2sta_mlmerequest(wlandevice_t *wlandev, struct p80211msg *msg)
 281 {
 282         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
 283
 284         int result = 0;
 285
 286         switch (msg->msgcode) {
 287         case DIDmsg_dot11req_mibget:
 288                 pr_debug("Received mibget request\n");
 289                 result = prism2mgmt_mibset_mibget(wlandev, msg);
 290                 break;
 291         case DIDmsg_dot11req_mibset:
 292                 pr_debug("Received mibset request\n");
 293                 result = prism2mgmt_mibset_mibget(wlandev, msg);
 294                 break;
 295         case DIDmsg_dot11req_scan:
 296                 pr_debug("Received scan request\n");
 297                 result = prism2mgmt_scan(wlandev, msg);
 298                 break;
 299         case DIDmsg_dot11req_scan_results:
 300                 pr_debug("Received scan_results request\n");
 301                 result = prism2mgmt_scan_results(wlandev, msg);
 302                 break;
 303         case DIDmsg_dot11req_start:
 304                 pr_debug("Received mlme start request\n");
 305                 result = prism2mgmt_start(wlandev, msg);
 306                 break;
 307                 /*
 308                  * Prism2 specific messages
 309                  */
 310         case DIDmsg_p2req_readpda:
 311                 pr_debug("Received mlme readpda request\n");
 312                 result = prism2mgmt_readpda(wlandev, msg);
 313                 break;
 314         case DIDmsg_p2req_ramdl_state:
 315                 pr_debug("Received mlme ramdl_state request\n");
 316                 result = prism2mgmt_ramdl_state(wlandev, msg);
 317                 break;
 318         case DIDmsg_p2req_ramdl_write:
 319                 pr_debug("Received mlme ramdl_write request\n");
 320                 result = prism2mgmt_ramdl_write(wlandev, msg);
 321                 break;
 322         case DIDmsg_p2req_flashdl_state:
 323                 pr_debug("Received mlme flashdl_state request\n");
 324                 result = prism2mgmt_flashdl_state(wlandev, msg);
 325                 break;
 326         case DIDmsg_p2req_flashdl_write:
 327                 pr_debug("Received mlme flashdl_write request\n");
 328                 result = prism2mgmt_flashdl_write(wlandev, msg);
 329                 break;
 330                 /*
 331                  * Linux specific messages
 332                  */
 333         case DIDmsg_lnxreq_hostwep:
 334                 break;          /* ignore me. */
 335         case DIDmsg_lnxreq_ifstate:
 336                 {
 337                         struct p80211msg_lnxreq_ifstate *ifstatemsg;
 338
 339                         pr_debug("Received mlme ifstate request\n");
 340                         ifstatemsg = (struct p80211msg_lnxreq_ifstate *) msg;
 341                         result =
 342                             prism2sta_ifstate(wlandev,
 343                                               ifstatemsg->ifstate.data);
 344                         ifstatemsg->resultcode.status =
 345                             P80211ENUM_msgitem_status_data_ok;
 346                         ifstatemsg->resultcode.data = result;
 347                         result = 0;
 348                 }
 349                 break;
 350         case DIDmsg_lnxreq_wlansniff:
 351                 pr_debug("Received mlme wlansniff request\n");
 352                 result = prism2mgmt_wlansniff(wlandev, msg);
 353                 break;
 354         case DIDmsg_lnxreq_autojoin:
 355                 pr_debug("Received mlme autojoin request\n");
 356                 result = prism2mgmt_autojoin(wlandev, msg);
 357                 break;
 358         case DIDmsg_lnxreq_commsquality:{
 359                         struct p80211msg_lnxreq_commsquality *qualmsg;
 360
 361                         pr_debug("Received commsquality request\n");
 362
 363                         qualmsg = (struct p80211msg_lnxreq_commsquality *) msg;
 364
 365                         qualmsg->link.status =
 366                             P80211ENUM_msgitem_status_data_ok;
 367                         qualmsg->level.status =
 368                             P80211ENUM_msgitem_status_data_ok;
 369                         qualmsg->noise.status =
 370                             P80211ENUM_msgitem_status_data_ok;
 371
 372                         qualmsg->link.data = le16_to_cpu(hw->qual.CQ_currBSS);
 373                         qualmsg->level.data = le16_to_cpu(hw->qual.ASL_currBSS);
 374                         qualmsg->noise.data = le16_to_cpu(hw->qual.ANL_currFC);
 375                         qualmsg->txrate.data = hw->txrate;
 376
 377                         break;
 378                 }
 379         default:
 380                 netdev_warn(wlandev->netdev,
 381                             "Unknown mgmt request message 0x%08x",
 382                             msg->msgcode);
 383                 break;
 384         }
 385
 386         return result;
 387 }
 388
 389 /*
 390  * prism2sta_ifstate
 391  *
 392  * Interface state.  This is the primary WLAN interface enable/disable
 393  * handler.  Following the driver/load/deviceprobe sequence, this
 394  * function must be called with a state of "enable" before any other
 395  * commands will be accepted.
 396  *
 397  * Arguments:
 398  *      wlandev         wlan device structure
 399  *      msgp            ptr to msg buffer
 400  *
 401  * Returns:
 402  *      A p80211 message resultcode value.
 403  *
 404  * Side effects:
 405  *
 406  * Call context:
 407  *      process thread  (usually)
 408  *      interrupt
 409  */
 410 u32 prism2sta_ifstate(wlandevice_t *wlandev, u32 ifstate)
 411 {
 412         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
 413         u32 result;
 414
 415         result = P80211ENUM_resultcode_implementation_failure;
 416
 417         pr_debug("Current MSD state(%d), requesting(%d)\n",
 418                  wlandev->msdstate, ifstate);
 419         switch (ifstate) {
 420         case P80211ENUM_ifstate_fwload:
 421                 switch (wlandev->msdstate) {
 422                 case WLAN_MSD_HWPRESENT:
 423                         wlandev->msdstate = WLAN_MSD_FWLOAD_PENDING;
 424                         /*
 425                          * Initialize the device+driver sufficiently
 426                          * for firmware loading.
 427                          */
 428                         result = hfa384x_drvr_start(hw);
 429                         if (result) {
 430                                 netdev_err(wlandev->netdev,
 431                                            "hfa384x_drvr_start() failed,result=%d\n",
 432                                            (int)result);
 433                                 result =
 434                                  P80211ENUM_resultcode_implementation_failure;
 435                                 wlandev->msdstate = WLAN_MSD_HWPRESENT;
 436                                 break;
 437                         }
 438                         wlandev->msdstate = WLAN_MSD_FWLOAD;
 439                         result = P80211ENUM_resultcode_success;
 440                         break;
 441                 case WLAN_MSD_FWLOAD:
 442                         hfa384x_cmd_initialize(hw);
 443                         result = P80211ENUM_resultcode_success;
 444                         break;
 445                 case WLAN_MSD_RUNNING:
 446                         netdev_warn(wlandev->netdev,
 447                                     "Cannot enter fwload state from enable state, you must disable first.\n");
 448                         result = P80211ENUM_resultcode_invalid_parameters;
 449                         break;
 450                 case WLAN_MSD_HWFAIL:
 451                 default:
 452                         /* probe() had a problem or the msdstate contains
 453                          * an unrecognized value, there's nothing we can do.
 454                          */
 455                         result = P80211ENUM_resultcode_implementation_failure;
 456                         break;
 457                 }
 458                 break;
 459         case P80211ENUM_ifstate_enable:
 460                 switch (wlandev->msdstate) {
 461                 case WLAN_MSD_HWPRESENT:
 462                 case WLAN_MSD_FWLOAD:
 463                         wlandev->msdstate = WLAN_MSD_RUNNING_PENDING;
 464                         /* Initialize the device+driver for full
 465                          * operation. Note that this might me an FWLOAD to
 466                          * to RUNNING transition so we must not do a chip
 467                          * or board level reset.  Note that on failure,
 468                          * the MSD state is set to HWPRESENT because we
 469                          * can't make any assumptions about the state
 470                          * of the hardware or a previous firmware load.
 471                          */
 472                         result = hfa384x_drvr_start(hw);
 473                         if (result) {
 474                                 netdev_err(wlandev->netdev,
 475                                            "hfa384x_drvr_start() failed,result=%d\n",
 476                                            (int)result);
 477                                 result =
 478                                   P80211ENUM_resultcode_implementation_failure;
 479                                 wlandev->msdstate = WLAN_MSD_HWPRESENT;
 480                                 break;
 481                         }
 482
 483                         result = prism2sta_getcardinfo(wlandev);
 484                         if (result) {
 485                                 netdev_err(wlandev->netdev,
 486                                            "prism2sta_getcardinfo() failed,result=%d\n",
 487                                            (int)result);
 488                                 result =
 489                                   P80211ENUM_resultcode_implementation_failure;
 490                                 hfa384x_drvr_stop(hw);
 491                                 wlandev->msdstate = WLAN_MSD_HWPRESENT;
 492                                 break;
 493                         }
 494                         result = prism2sta_globalsetup(wlandev);
 495                         if (result) {
 496                                 netdev_err(wlandev->netdev,
 497                                            "prism2sta_globalsetup() failed,result=%d\n",
 498                                            (int)result);
 499                                 result =
 500                                   P80211ENUM_resultcode_implementation_failure;
 501                                 hfa384x_drvr_stop(hw);
 502                                 wlandev->msdstate = WLAN_MSD_HWPRESENT;
 503                                 break;
 504                         }
 505                         wlandev->msdstate = WLAN_MSD_RUNNING;
 506                         hw->join_ap = 0;
 507                         hw->join_retries = 60;
 508                         result = P80211ENUM_resultcode_success;
 509                         break;
 510                 case WLAN_MSD_RUNNING:
 511                         /* Do nothing, we're already in this state. */
 512                         result = P80211ENUM_resultcode_success;
 513                         break;
 514                 case WLAN_MSD_HWFAIL:
 515                 default:
 516                         /* probe() had a problem or the msdstate contains
 517                          * an unrecognized value, there's nothing we can do.
 518                          */
 519                         result = P80211ENUM_resultcode_implementation_failure;
 520                         break;
 521                 }
 522                 break;
 523         case P80211ENUM_ifstate_disable:
 524                 switch (wlandev->msdstate) {
 525                 case WLAN_MSD_HWPRESENT:
 526                         /* Do nothing, we're already in this state. */
 527                         result = P80211ENUM_resultcode_success;
 528                         break;
 529                 case WLAN_MSD_FWLOAD:
 530                 case WLAN_MSD_RUNNING:
 531                         wlandev->msdstate = WLAN_MSD_HWPRESENT_PENDING;
 532                         /*
 533                          * TODO: Shut down the MAC completely. Here a chip
 534                          * or board level reset is probably called for.
 535                          * After a "disable" _all_ results are lost, even
 536                          * those from a fwload.
 537                          */
 538                         if (!wlandev->hwremoved)
 539                                 netif_carrier_off(wlandev->netdev);
 540
 541                         hfa384x_drvr_stop(hw);
 542
 543                         wlandev->macmode = WLAN_MACMODE_NONE;
 544                         wlandev->msdstate = WLAN_MSD_HWPRESENT;
 545                         result = P80211ENUM_resultcode_success;
 546                         break;
 547                 case WLAN_MSD_HWFAIL:
 548                 default:
 549                         /* probe() had a problem or the msdstate contains
 550                          * an unrecognized value, there's nothing we can do.
 551                          */
 552                         result = P80211ENUM_resultcode_implementation_failure;
 553                         break;
 554                 }
 555                 break;
 556         default:
 557                 result = P80211ENUM_resultcode_invalid_parameters;
 558                 break;
 559         }
 560
 561         return result;
 562 }
 563
 564 /*
 565  * prism2sta_getcardinfo
 566  *
 567  * Collect the NICID, firmware version and any other identifiers
 568  * we'd like to have in host-side data structures.
 569  *
 570  * Arguments:
 571  *      wlandev         wlan device structure
 572  *
 573  * Returns:
 574  *      0       success
 575  *      >0      f/w reported error
 576  *      <0      driver reported error
 577  *
 578  * Side effects:
 579  *
 580  * Call context:
 581  *      Either.
 582  */
 583 static int prism2sta_getcardinfo(wlandevice_t *wlandev)
 584 {
 585         int result = 0;
 586         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
 587         u16 temp;
 588         u8 snum[HFA384x_RID_NICSERIALNUMBER_LEN];
 589
 590         /* Collect version and compatibility info */
 591         /*  Some are critical, some are not */
 592         /* NIC identity */
 593         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_NICIDENTITY,
 594                                         &hw->ident_nic,
 595                                         sizeof(hfa384x_compident_t));
 596         if (result) {
 597                 netdev_err(wlandev->netdev, "Failed to retrieve NICIDENTITY\n");
 598                 goto failed;
 599         }
 600
 601         /* get all the nic id fields in host byte order */
 602         hw->ident_nic.id = le16_to_cpu(hw->ident_nic.id);
 603         hw->ident_nic.variant = le16_to_cpu(hw->ident_nic.variant);
 604         hw->ident_nic.major = le16_to_cpu(hw->ident_nic.major);
 605         hw->ident_nic.minor = le16_to_cpu(hw->ident_nic.minor);
 606
 607         netdev_info(wlandev->netdev, "ident: nic h/w: id=0x%02x %d.%d.%d\n",
 608                hw->ident_nic.id, hw->ident_nic.major,
 609                hw->ident_nic.minor, hw->ident_nic.variant);
 610
 611         /* Primary f/w identity */
 612         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_PRIIDENTITY,
 613                                         &hw->ident_pri_fw,
 614                                         sizeof(hfa384x_compident_t));
 615         if (result) {
 616                 netdev_err(wlandev->netdev, "Failed to retrieve PRIIDENTITY\n");
 617                 goto failed;
 618         }
 619
 620         /* get all the private fw id fields in host byte order */
 621         hw->ident_pri_fw.id = le16_to_cpu(hw->ident_pri_fw.id);
 622         hw->ident_pri_fw.variant = le16_to_cpu(hw->ident_pri_fw.variant);
 623         hw->ident_pri_fw.major = le16_to_cpu(hw->ident_pri_fw.major);
 624         hw->ident_pri_fw.minor = le16_to_cpu(hw->ident_pri_fw.minor);
 625
 626         netdev_info(wlandev->netdev, "ident: pri f/w: id=0x%02x %d.%d.%d\n",
 627                hw->ident_pri_fw.id, hw->ident_pri_fw.major,
 628                hw->ident_pri_fw.minor, hw->ident_pri_fw.variant);
 629
 630         /* Station (Secondary?) f/w identity */
 631         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_STAIDENTITY,
 632                                         &hw->ident_sta_fw,
 633                                         sizeof(hfa384x_compident_t));
 634         if (result) {
 635                 netdev_err(wlandev->netdev, "Failed to retrieve STAIDENTITY\n");
 636                 goto failed;
 637         }
 638
 639         if (hw->ident_nic.id < 0x8000) {
 640                 netdev_err(wlandev->netdev,
 641                        "FATAL: Card is not an Intersil Prism2/2.5/3\n");
 642                 result = -1;
 643                 goto failed;
 644         }
 645
 646         /* get all the station fw id fields in host byte order */
 647         hw->ident_sta_fw.id = le16_to_cpu(hw->ident_sta_fw.id);
 648         hw->ident_sta_fw.variant = le16_to_cpu(hw->ident_sta_fw.variant);
 649         hw->ident_sta_fw.major = le16_to_cpu(hw->ident_sta_fw.major);
 650         hw->ident_sta_fw.minor = le16_to_cpu(hw->ident_sta_fw.minor);
 651
 652         /* strip out the 'special' variant bits */
 653         hw->mm_mods = hw->ident_sta_fw.variant & (BIT(14) | BIT(15));
 654         hw->ident_sta_fw.variant &= ~((u16) (BIT(14) | BIT(15)));
 655
 656         if (hw->ident_sta_fw.id == 0x1f) {
 657                 netdev_info(wlandev->netdev,
 658                        "ident: sta f/w: id=0x%02x %d.%d.%d\n",
 659                        hw->ident_sta_fw.id, hw->ident_sta_fw.major,
 660                        hw->ident_sta_fw.minor, hw->ident_sta_fw.variant);
 661         } else {
 662                 netdev_info(wlandev->netdev,
 663                        "ident:  ap f/w: id=0x%02x %d.%d.%d\n",
 664                        hw->ident_sta_fw.id, hw->ident_sta_fw.major,
 665                        hw->ident_sta_fw.minor, hw->ident_sta_fw.variant);
 666                 netdev_err(wlandev->netdev, "Unsupported Tertiary AP firmware loaded!\n");
 667                 goto failed;
 668         }
 669
 670         /* Compatibility range, Modem supplier */
 671         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_MFISUPRANGE,
 672                                         &hw->cap_sup_mfi,
 673                                         sizeof(hfa384x_caplevel_t));
 674         if (result) {
 675                 netdev_err(wlandev->netdev, "Failed to retrieve MFISUPRANGE\n");
 676                 goto failed;
 677         }
 678
 679         /* get all the Compatibility range, modem interface supplier
 680          * fields in byte order
 681          */
 682         hw->cap_sup_mfi.role = le16_to_cpu(hw->cap_sup_mfi.role);
 683         hw->cap_sup_mfi.id = le16_to_cpu(hw->cap_sup_mfi.id);
 684         hw->cap_sup_mfi.variant = le16_to_cpu(hw->cap_sup_mfi.variant);
 685         hw->cap_sup_mfi.bottom = le16_to_cpu(hw->cap_sup_mfi.bottom);
 686         hw->cap_sup_mfi.top = le16_to_cpu(hw->cap_sup_mfi.top);
 687
 688         netdev_info(wlandev->netdev,
 689                "MFI:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
 690                hw->cap_sup_mfi.role, hw->cap_sup_mfi.id,
 691                hw->cap_sup_mfi.variant, hw->cap_sup_mfi.bottom,
 692                hw->cap_sup_mfi.top);
 693
 694         /* Compatibility range, Controller supplier */
 695         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_CFISUPRANGE,
 696                                         &hw->cap_sup_cfi,
 697                                         sizeof(hfa384x_caplevel_t));
 698         if (result) {
 699                 netdev_err(wlandev->netdev, "Failed to retrieve CFISUPRANGE\n");
 700                 goto failed;
 701         }
 702
 703         /* get all the Compatibility range, controller interface supplier
 704          * fields in byte order
 705          */
 706         hw->cap_sup_cfi.role = le16_to_cpu(hw->cap_sup_cfi.role);
 707         hw->cap_sup_cfi.id = le16_to_cpu(hw->cap_sup_cfi.id);
 708         hw->cap_sup_cfi.variant = le16_to_cpu(hw->cap_sup_cfi.variant);
 709         hw->cap_sup_cfi.bottom = le16_to_cpu(hw->cap_sup_cfi.bottom);
 710         hw->cap_sup_cfi.top = le16_to_cpu(hw->cap_sup_cfi.top);
 711
 712         netdev_info(wlandev->netdev,
 713                "CFI:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
 714                hw->cap_sup_cfi.role, hw->cap_sup_cfi.id,
 715                hw->cap_sup_cfi.variant, hw->cap_sup_cfi.bottom,
 716                hw->cap_sup_cfi.top);
 717
 718         /* Compatibility range, Primary f/w supplier */
 719         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_PRISUPRANGE,
 720                                         &hw->cap_sup_pri,
 721                                         sizeof(hfa384x_caplevel_t));
 722         if (result) {
 723                 netdev_err(wlandev->netdev, "Failed to retrieve PRISUPRANGE\n");
 724                 goto failed;
 725         }
 726
 727         /* get all the Compatibility range, primary firmware supplier
 728          * fields in byte order
 729          */
 730         hw->cap_sup_pri.role = le16_to_cpu(hw->cap_sup_pri.role);
 731         hw->cap_sup_pri.id = le16_to_cpu(hw->cap_sup_pri.id);
 732         hw->cap_sup_pri.variant = le16_to_cpu(hw->cap_sup_pri.variant);
 733         hw->cap_sup_pri.bottom = le16_to_cpu(hw->cap_sup_pri.bottom);
 734         hw->cap_sup_pri.top = le16_to_cpu(hw->cap_sup_pri.top);
 735
 736         netdev_info(wlandev->netdev,
 737                "PRI:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
 738                hw->cap_sup_pri.role, hw->cap_sup_pri.id,
 739                hw->cap_sup_pri.variant, hw->cap_sup_pri.bottom,
 740                hw->cap_sup_pri.top);
 741
 742         /* Compatibility range, Station f/w supplier */
 743         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_STASUPRANGE,
 744                                         &hw->cap_sup_sta,
 745                                         sizeof(hfa384x_caplevel_t));
 746         if (result) {
 747                 netdev_err(wlandev->netdev, "Failed to retrieve STASUPRANGE\n");
 748                 goto failed;
 749         }
 750
 751         /* get all the Compatibility range, station firmware supplier
 752          * fields in byte order
 753          */
 754         hw->cap_sup_sta.role = le16_to_cpu(hw->cap_sup_sta.role);
 755         hw->cap_sup_sta.id = le16_to_cpu(hw->cap_sup_sta.id);
 756         hw->cap_sup_sta.variant = le16_to_cpu(hw->cap_sup_sta.variant);
 757         hw->cap_sup_sta.bottom = le16_to_cpu(hw->cap_sup_sta.bottom);
 758         hw->cap_sup_sta.top = le16_to_cpu(hw->cap_sup_sta.top);
 759
 760         if (hw->cap_sup_sta.id == 0x04) {
 761                 netdev_info(wlandev->netdev,
 762                        "STA:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
 763                        hw->cap_sup_sta.role, hw->cap_sup_sta.id,
 764                        hw->cap_sup_sta.variant, hw->cap_sup_sta.bottom,
 765                        hw->cap_sup_sta.top);
 766         } else {
 767                 netdev_info(wlandev->netdev,
 768                        "AP:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
 769                        hw->cap_sup_sta.role, hw->cap_sup_sta.id,
 770                        hw->cap_sup_sta.variant, hw->cap_sup_sta.bottom,
 771                        hw->cap_sup_sta.top);
 772         }
 773
 774         /* Compatibility range, primary f/w actor, CFI supplier */
 775         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_PRI_CFIACTRANGES,
 776                                         &hw->cap_act_pri_cfi,
 777                                         sizeof(hfa384x_caplevel_t));
 778         if (result) {
 779                 netdev_err(wlandev->netdev, "Failed to retrieve PRI_CFIACTRANGES\n");
 780                 goto failed;
 781         }
 782
 783         /* get all the Compatibility range, primary f/w actor, CFI supplier
 784          * fields in byte order
 785          */
 786         hw->cap_act_pri_cfi.role = le16_to_cpu(hw->cap_act_pri_cfi.role);
 787         hw->cap_act_pri_cfi.id = le16_to_cpu(hw->cap_act_pri_cfi.id);
 788         hw->cap_act_pri_cfi.variant = le16_to_cpu(hw->cap_act_pri_cfi.variant);
 789         hw->cap_act_pri_cfi.bottom = le16_to_cpu(hw->cap_act_pri_cfi.bottom);
 790         hw->cap_act_pri_cfi.top = le16_to_cpu(hw->cap_act_pri_cfi.top);
 791
 792         netdev_info(wlandev->netdev,
 793                "PRI-CFI:ACT:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
 794                hw->cap_act_pri_cfi.role, hw->cap_act_pri_cfi.id,
 795                hw->cap_act_pri_cfi.variant, hw->cap_act_pri_cfi.bottom,
 796                hw->cap_act_pri_cfi.top);
 797
 798         /* Compatibility range, sta f/w actor, CFI supplier */
 799         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_STA_CFIACTRANGES,
 800                                         &hw->cap_act_sta_cfi,
 801                                         sizeof(hfa384x_caplevel_t));
 802         if (result) {
 803                 netdev_err(wlandev->netdev, "Failed to retrieve STA_CFIACTRANGES\n");
 804                 goto failed;
 805         }
 806
 807         /* get all the Compatibility range, station f/w actor, CFI supplier
 808          * fields in byte order
 809          */
 810         hw->cap_act_sta_cfi.role = le16_to_cpu(hw->cap_act_sta_cfi.role);
 811         hw->cap_act_sta_cfi.id = le16_to_cpu(hw->cap_act_sta_cfi.id);
 812         hw->cap_act_sta_cfi.variant = le16_to_cpu(hw->cap_act_sta_cfi.variant);
 813         hw->cap_act_sta_cfi.bottom = le16_to_cpu(hw->cap_act_sta_cfi.bottom);
 814         hw->cap_act_sta_cfi.top = le16_to_cpu(hw->cap_act_sta_cfi.top);
 815
 816         netdev_info(wlandev->netdev,
 817                "STA-CFI:ACT:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
 818                hw->cap_act_sta_cfi.role, hw->cap_act_sta_cfi.id,
 819                hw->cap_act_sta_cfi.variant, hw->cap_act_sta_cfi.bottom,
 820                hw->cap_act_sta_cfi.top);
 821
 822         /* Compatibility range, sta f/w actor, MFI supplier */
 823         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_STA_MFIACTRANGES,
 824                                         &hw->cap_act_sta_mfi,
 825                                         sizeof(hfa384x_caplevel_t));
 826         if (result) {
 827                 netdev_err(wlandev->netdev, "Failed to retrieve STA_MFIACTRANGES\n");
 828                 goto failed;
 829         }
 830
 831         /* get all the Compatibility range, station f/w actor, MFI supplier
 832          * fields in byte order
 833          */
 834         hw->cap_act_sta_mfi.role = le16_to_cpu(hw->cap_act_sta_mfi.role);
 835         hw->cap_act_sta_mfi.id = le16_to_cpu(hw->cap_act_sta_mfi.id);
 836         hw->cap_act_sta_mfi.variant = le16_to_cpu(hw->cap_act_sta_mfi.variant);
 837         hw->cap_act_sta_mfi.bottom = le16_to_cpu(hw->cap_act_sta_mfi.bottom);
 838         hw->cap_act_sta_mfi.top = le16_to_cpu(hw->cap_act_sta_mfi.top);
 839
 840         netdev_info(wlandev->netdev,
 841                "STA-MFI:ACT:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
 842                hw->cap_act_sta_mfi.role, hw->cap_act_sta_mfi.id,
 843                hw->cap_act_sta_mfi.variant, hw->cap_act_sta_mfi.bottom,
 844                hw->cap_act_sta_mfi.top);
 845
 846         /* Serial Number */
 847         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_NICSERIALNUMBER,
 848                                         snum, HFA384x_RID_NICSERIALNUMBER_LEN);
 849         if (!result) {
 850                 netdev_info(wlandev->netdev, "Prism2 card SN: %*pEhp\n",
 851                             HFA384x_RID_NICSERIALNUMBER_LEN, snum);
 852         } else {
 853                 netdev_err(wlandev->netdev, "Failed to retrieve Prism2 Card SN\n");
 854                 goto failed;
 855         }
 856
 857         /* Collect the MAC address */
 858         result = hfa384x_drvr_getconfig(hw, HFA384x_RID_CNFOWNMACADDR,
 859                                         wlandev->netdev->dev_addr, ETH_ALEN);
 860         if (result != 0) {
 861                 netdev_err(wlandev->netdev, "Failed to retrieve mac address\n");
 862                 goto failed;
 863         }
 864
 865         /* short preamble is always implemented */
 866         wlandev->nsdcaps |= P80211_NSDCAP_SHORT_PREAMBLE;
 867
 868         /* find out if hardware wep is implemented */
 869         hfa384x_drvr_getconfig16(hw, HFA384x_RID_PRIVACYOPTIMP, &temp);
 870         if (temp)
 871                 wlandev->nsdcaps |= P80211_NSDCAP_HARDWAREWEP;
 872
 873         /* get the dBm Scaling constant */
 874         hfa384x_drvr_getconfig16(hw, HFA384x_RID_CNFDBMADJUST, &temp);
 875         hw->dbmadjust = temp;
 876
 877         /* Only enable scan by default on newer firmware */
 878         if (HFA384x_FIRMWARE_VERSION(hw->ident_sta_fw.major,
 879                                      hw->ident_sta_fw.minor,
 880                                      hw->ident_sta_fw.variant) <
 881             HFA384x_FIRMWARE_VERSION(1, 5, 5)) {
 882                 wlandev->nsdcaps |= P80211_NSDCAP_NOSCAN;
 883         }
 884
 885         /* TODO: Set any internally managed config items */
 886
 887         goto done;
 888 failed:
 889         netdev_err(wlandev->netdev, "Failed, result=%d\n", result);
 890 done:
 891         return result;
 892 }
 893
 894 /*
 895  * prism2sta_globalsetup
 896  *
 897  * Set any global RIDs that we want to set at device activation.
 898  *
 899  * Arguments:
 900  *      wlandev         wlan device structure
 901  *
 902  * Returns:
 903  *      0       success
 904  *      >0      f/w reported error
 905  *      <0      driver reported error
 906  *
 907  * Side effects:
 908  *
 909  * Call context:
 910  *      process thread
 911  */
 912 static int prism2sta_globalsetup(wlandevice_t *wlandev)
 913 {
 914         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
 915
 916         /* Set the maximum frame size */
 917         return hfa384x_drvr_setconfig16(hw, HFA384x_RID_CNFMAXDATALEN,
 918                                         WLAN_DATA_MAXLEN);
 919 }
 920
 921 static int prism2sta_setmulticast(wlandevice_t *wlandev, netdevice_t *dev)
 922 {
 923         int result = 0;
 924         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
 925
 926         u16 promisc;
 927
 928         /* If we're not ready, what's the point? */
 929         if (hw->state != HFA384x_STATE_RUNNING)
 930                 goto exit;
 931
 932         if ((dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0)
 933                 promisc = P80211ENUM_truth_true;
 934         else
 935                 promisc = P80211ENUM_truth_false;
 936
 937         result =
 938             hfa384x_drvr_setconfig16_async(hw, HFA384x_RID_PROMISCMODE,
 939                                            promisc);
 940 exit:
 941         return result;
 942 }
 943
 944 /*
 945  * prism2sta_inf_handover
 946  *
 947  * Handles the receipt of a Handover info frame. Should only be present
 948  * in APs only.
 949  *
 950  * Arguments:
 951  *      wlandev         wlan device structure
 952  *      inf             ptr to info frame (contents in hfa384x order)
 953  *
 954  * Returns:
 955  *      nothing
 956  *
 957  * Side effects:
 958  *
 959  * Call context:
 960  *      interrupt
 961  */
 962 static void prism2sta_inf_handover(wlandevice_t *wlandev,
 963                                    hfa384x_InfFrame_t *inf)
 964 {
 965         pr_debug("received infoframe:HANDOVER (unhandled)\n");
 966 }
 967
 968 /*
 969  * prism2sta_inf_tallies
 970  *
 971  * Handles the receipt of a CommTallies info frame.
 972  *
 973  * Arguments:
 974  *      wlandev         wlan device structure
 975  *      inf             ptr to info frame (contents in hfa384x order)
 976  *
 977  * Returns:
 978  *      nothing
 979  *
 980  * Side effects:
 981  *
 982  * Call context:
 983  *      interrupt
 984  */
 985 static void prism2sta_inf_tallies(wlandevice_t *wlandev,
 986                                   hfa384x_InfFrame_t *inf)
 987 {
 988         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
 989         u16 *src16;
 990         u32 *dst;
 991         u32 *src32;
 992         int i;
 993         int cnt;
 994
 995         /*
 996          * Determine if these are 16-bit or 32-bit tallies, based on the
 997          * record length of the info record.
 998          */
 999
1000         cnt = sizeof(hfa384x_CommTallies32_t) / sizeof(u32);
1001         if (inf->framelen > 22) {
1002                 dst = (u32 *) &hw->tallies;
1003                 src32 = (u32 *) &inf->info.commtallies32;
1004                 for (i = 0; i < cnt; i++, dst++, src32++)
1005                         *dst += le32_to_cpu(*src32);
1006         } else {
1007                 dst = (u32 *) &hw->tallies;
1008                 src16 = (u16 *) &inf->info.commtallies16;
1009                 for (i = 0; i < cnt; i++, dst++, src16++)
1010                         *dst += le16_to_cpu(*src16);
1011         }
1012 }
1013
1014 /*
1015  * prism2sta_inf_scanresults
1016  *
1017  * Handles the receipt of a Scan Results info frame.
1018  *
1019  * Arguments:
1020  *      wlandev         wlan device structure
1021  *      inf             ptr to info frame (contents in hfa384x order)
1022  *
1023  * Returns:
1024  *      nothing
1025  *
1026  * Side effects:
1027  *
1028  * Call context:
1029  *      interrupt
1030  */
1031 static void prism2sta_inf_scanresults(wlandevice_t *wlandev,
1032                                       hfa384x_InfFrame_t *inf)
1033 {
1034
1035         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
1036         int nbss;
1037         hfa384x_ScanResult_t *sr = &(inf->info.scanresult);
1038         int i;
1039         hfa384x_JoinRequest_data_t joinreq;
1040         int result;
1041
1042         /* Get the number of results, first in bytes, then in results */
1043         nbss = (inf->framelen * sizeof(u16)) -
1044             sizeof(inf->infotype) - sizeof(inf->info.scanresult.scanreason);
1045         nbss /= sizeof(hfa384x_ScanResultSub_t);
1046
1047         /* Print em */
1048         pr_debug("rx scanresults, reason=%d, nbss=%d:\n",
1049                  inf->info.scanresult.scanreason, nbss);
1050         for (i = 0; i < nbss; i++) {
1051                 pr_debug("chid=%d anl=%d sl=%d bcnint=%d\n",
1052                          sr->result[i].chid,
1053                          sr->result[i].anl,
1054                          sr->result[i].sl, sr->result[i].bcnint);
1055                 pr_debug("  capinfo=0x%04x proberesp_rate=%d\n",
1056                          sr->result[i].capinfo, sr->result[i].proberesp_rate);
1057         }
1058         /* issue a join request */
1059         joinreq.channel = sr->result[0].chid;
1060         memcpy(joinreq.bssid, sr->result[0].bssid, WLAN_BSSID_LEN);
1061         result = hfa384x_drvr_setconfig(hw,
1062                                         HFA384x_RID_JOINREQUEST,
1063                                         &joinreq, HFA384x_RID_JOINREQUEST_LEN);
1064         if (result) {
1065                 netdev_err(wlandev->netdev, "setconfig(joinreq) failed, result=%d\n",
1066                        result);
1067         }
1068 }
1069
1070 /*
1071  * prism2sta_inf_hostscanresults
1072  *
1073  * Handles the receipt of a Scan Results info frame.
1074  *
1075  * Arguments:
1076  *      wlandev         wlan device structure
1077  *      inf             ptr to info frame (contents in hfa384x order)
1078  *
1079  * Returns:
1080  *      nothing
1081  *
1082  * Side effects:
1083  *
1084  * Call context:
1085  *      interrupt
1086  */
1087 static void prism2sta_inf_hostscanresults(wlandevice_t *wlandev,
1088                                           hfa384x_InfFrame_t *inf)
1089 {
1090         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
1091         int nbss;
1092
1093         nbss = (inf->framelen - 3) / 32;
1094         pr_debug("Received %d hostscan results\n", nbss);
1095
1096         if (nbss > 32)
1097                 nbss = 32;
1098
1099         kfree(hw->scanresults);
1100
1101         hw->scanresults = kmemdup(inf, sizeof(hfa384x_InfFrame_t), GFP_ATOMIC);
1102
1103         if (nbss == 0)
1104                 nbss = -1;
1105
1106         /* Notify/wake the sleeping caller. */
1107         hw->scanflag = nbss;
1108         wake_up_interruptible(&hw->cmdq);
1109 };
1110
1111 /*
1112  * prism2sta_inf_chinforesults
1113  *
1114  * Handles the receipt of a Channel Info Results info frame.
1115  *
1116  * Arguments:
1117  *      wlandev         wlan device structure
1118  *      inf             ptr to info frame (contents in hfa384x order)
1119  *
1120  * Returns:
1121  *      nothing
1122  *
1123  * Side effects:
1124  *
1125  * Call context:
1126  *      interrupt
1127  */
1128 static void prism2sta_inf_chinforesults(wlandevice_t *wlandev,
1129                                         hfa384x_InfFrame_t *inf)
1130 {
1131         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
1132         unsigned int i, n;
1133
1134         hw->channel_info.results.scanchannels =
1135             le16_to_cpu(inf->info.chinforesult.scanchannels);
1136
1137         for (i = 0, n = 0; i < HFA384x_CHINFORESULT_MAX; i++) {
1138                 hfa384x_ChInfoResultSub_t *result;
1139                 hfa384x_ChInfoResultSub_t *chinforesult;
1140                 int chan;
1141
1142                 if (!(hw->channel_info.results.scanchannels & (1 << i)))
1143                         continue;
1144
1145                 result = &inf->info.chinforesult.result[n];
1146                 chan = le16_to_cpu(result->chid) - 1;
1147
1148                 if (chan < 0 || chan >= HFA384x_CHINFORESULT_MAX)
1149                         continue;
1150
1151                 chinforesult = &hw->channel_info.results.result[chan];
1152                 chinforesult->chid = chan;
1153                 chinforesult->anl = le16_to_cpu(result->anl);
1154                 chinforesult->pnl = le16_to_cpu(result->pnl);
1155                 chinforesult->active = le16_to_cpu(result->active);
1156
1157                 pr_debug("chinfo: channel %d, %s level (avg/peak)=%d/%d dB, pcf %d\n",
1158                          chan + 1,
1159                          (chinforesult->active & HFA384x_CHINFORESULT_BSSACTIVE)
1160                                 ? "signal" : "noise",
1161                          chinforesult->anl, chinforesult->pnl,
1162                          (chinforesult->active & HFA384x_CHINFORESULT_PCFACTIVE)
1163                                 ? 1 : 0);
1164                 n++;
1165         }
1166         atomic_set(&hw->channel_info.done, 2);
1167
1168         hw->channel_info.count = n;
1169 }
1170
1171 void prism2sta_processing_defer(struct work_struct *data)
1172 {
1173         hfa384x_t *hw = container_of(data, struct hfa384x, link_bh);
1174         wlandevice_t *wlandev = hw->wlandev;
1175         hfa384x_bytestr32_t ssid;
1176         int result;
1177
1178         /* First let's process the auth frames */
1179         {
1180                 struct sk_buff *skb;
1181                 hfa384x_InfFrame_t *inf;
1182
1183                 while ((skb = skb_dequeue(&hw->authq))) {
1184                         inf = (hfa384x_InfFrame_t *) skb->data;
1185                         prism2sta_inf_authreq_defer(wlandev, inf);
1186                 }
1187
1188         }
1189
1190         /* Now let's handle the linkstatus stuff */
1191         if (hw->link_status == hw->link_status_new)
1192                 return;
1193
1194         hw->link_status = hw->link_status_new;
1195
1196         switch (hw->link_status) {
1197         case HFA384x_LINK_NOTCONNECTED:
1198                 /* I'm currently assuming that this is the initial link
1199                  * state.  It should only be possible immediately
1200                  * following an Enable command.
1201                  * Response:
1202                  * Block Transmits, Ignore receives of data frames
1203                  */
1204                 netif_carrier_off(wlandev->netdev);
1205
1206                 netdev_info(wlandev->netdev, "linkstatus=NOTCONNECTED (unhandled)\n");
1207                 break;
1208
1209         case HFA384x_LINK_CONNECTED:
1210                 /* This one indicates a successful scan/join/auth/assoc.
1211                  * When we have the full MLME complement, this event will
1212                  * signify successful completion of both mlme_authenticate
1213                  * and mlme_associate.  State management will get a little
1214                  * ugly here.
1215                  * Response:
1216                  * Indicate authentication and/or association
1217                  * Enable Transmits, Receives and pass up data frames
1218                  */
1219
1220                 netif_carrier_on(wlandev->netdev);
1221
1222                 /* If we are joining a specific AP, set our
1223                  * state and reset retries
1224                  */
1225                 if (hw->join_ap == 1)
1226                         hw->join_ap = 2;
1227                 hw->join_retries = 60;
1228
1229                 /* Don't call this in monitor mode */
1230                 if (wlandev->netdev->type == ARPHRD_ETHER) {
1231                         u16 portstatus;
1232
1233                         netdev_info(wlandev->netdev, "linkstatus=CONNECTED\n");
1234
1235                         /* For non-usb devices, we can use the sync versions */
1236                         /* Collect the BSSID, and set state to allow tx */
1237
1238                         result = hfa384x_drvr_getconfig(hw,
1239                                                 HFA384x_RID_CURRENTBSSID,
1240                                                 wlandev->bssid,
1241                                                 WLAN_BSSID_LEN);
1242                         if (result) {
1243                                 pr_debug
1244                                     ("getconfig(0x%02x) failed, result = %d\n",
1245                                      HFA384x_RID_CURRENTBSSID, result);
1246                                 return;
1247                         }
1248
1249                         result = hfa384x_drvr_getconfig(hw,
1250                                                         HFA384x_RID_CURRENTSSID,
1251                                                         &ssid, sizeof(ssid));
1252                         if (result) {
1253                                 pr_debug
1254                                     ("getconfig(0x%02x) failed, result = %d\n",
1255                                      HFA384x_RID_CURRENTSSID, result);
1256                                 return;
1257                         }
1258                         prism2mgmt_bytestr2pstr(
1259                                         (struct hfa384x_bytestr *) &ssid,
1260                                         (p80211pstrd_t *) &wlandev->ssid);
1261
1262                         /* Collect the port status */
1263                         result = hfa384x_drvr_getconfig16(hw,
1264                                                         HFA384x_RID_PORTSTATUS,
1265                                                         &portstatus);
1266                         if (result) {
1267                                 pr_debug
1268                                     ("getconfig(0x%02x) failed, result = %d\n",
1269                                      HFA384x_RID_PORTSTATUS, result);
1270                                 return;
1271                         }
1272                         wlandev->macmode =
1273                             (portstatus == HFA384x_PSTATUS_CONN_IBSS) ?
1274                             WLAN_MACMODE_IBSS_STA : WLAN_MACMODE_ESS_STA;
1275
1276                         /* signal back up to cfg80211 layer */
1277                         prism2_connect_result(wlandev, P80211ENUM_truth_false);
1278
1279                         /* Get the ball rolling on the comms quality stuff */
1280                         prism2sta_commsqual_defer(&hw->commsqual_bh);
1281                 }
1282                 break;
1283
1284         case HFA384x_LINK_DISCONNECTED:
1285                 /* This one indicates that our association is gone.  We've
1286                  * lost connection with the AP and/or been disassociated.
1287                  * This indicates that the MAC has completely cleared it's
1288                  * associated state.  We * should send a deauth indication
1289                  * (implying disassoc) up * to the MLME.
1290                  * Response:
1291                  * Indicate Deauthentication
1292                  * Block Transmits, Ignore receives of data frames
1293                  */
1294                 if (wlandev->netdev->type == ARPHRD_ETHER)
1295                         netdev_info(wlandev->netdev,
1296                                "linkstatus=DISCONNECTED (unhandled)\n");
1297                 wlandev->macmode = WLAN_MACMODE_NONE;
1298
1299                 netif_carrier_off(wlandev->netdev);
1300
1301                 /* signal back up to cfg80211 layer */
1302                 prism2_disconnected(wlandev);
1303
1304                 break;
1305
1306         case HFA384x_LINK_AP_CHANGE:
1307                 /* This one indicates that the MAC has decided to and
1308                  * successfully completed a change to another AP.  We
1309                  * should probably implement a reassociation indication
1310                  * in response to this one.  I'm thinking that the the
1311                  * p80211 layer needs to be notified in case of
1312                  * buffering/queueing issues.  User mode also needs to be
1313                  * notified so that any BSS dependent elements can be
1314                  * updated.
1315                  * associated state.  We * should send a deauth indication
1316                  * (implying disassoc) up * to the MLME.
1317                  * Response:
1318                  * Indicate Reassociation
1319                  * Enable Transmits, Receives and pass up data frames
1320                  */
1321                 netdev_info(wlandev->netdev, "linkstatus=AP_CHANGE\n");
1322
1323                 result = hfa384x_drvr_getconfig(hw,
1324                                                 HFA384x_RID_CURRENTBSSID,
1325                                                 wlandev->bssid, WLAN_BSSID_LEN);
1326                 if (result) {
1327                         pr_debug("getconfig(0x%02x) failed, result = %d\n",
1328                                  HFA384x_RID_CURRENTBSSID, result);
1329                         return;
1330                 }
1331
1332                 result = hfa384x_drvr_getconfig(hw,
1333                                                 HFA384x_RID_CURRENTSSID,
1334                                                 &ssid, sizeof(ssid));
1335                 if (result) {
1336                         pr_debug("getconfig(0x%02x) failed, result = %d\n",
1337                                  HFA384x_RID_CURRENTSSID, result);
1338                         return;
1339                 }
1340                 prism2mgmt_bytestr2pstr((struct hfa384x_bytestr *) &ssid,
1341                                         (p80211pstrd_t *) &wlandev->ssid);
1342
1343                 hw->link_status = HFA384x_LINK_CONNECTED;
1344                 netif_carrier_on(wlandev->netdev);
1345
1346                 /* signal back up to cfg80211 layer */
1347                 prism2_roamed(wlandev);
1348
1349                 break;
1350
1351         case HFA384x_LINK_AP_OUTOFRANGE:
1352                 /* This one indicates that the MAC has decided that the
1353                  * AP is out of range, but hasn't found a better candidate
1354                  * so the MAC maintains its "associated" state in case
1355                  * we get back in range.  We should block transmits and
1356                  * receives in this state.  Do we need an indication here?
1357                  * Probably not since a polling user-mode element would
1358                  * get this status from from p2PortStatus(FD40). What about
1359                  * p80211?
1360                  * Response:
1361                  * Block Transmits, Ignore receives of data frames
1362                  */
1363                 netdev_info(wlandev->netdev, "linkstatus=AP_OUTOFRANGE (unhandled)\n");
1364
1365                 netif_carrier_off(wlandev->netdev);
1366
1367                 break;
1368
1369         case HFA384x_LINK_AP_INRANGE:
1370                 /* This one indicates that the MAC has decided that the
1371                  * AP is back in range.  We continue working with our
1372                  * existing association.
1373                  * Response:
1374                  * Enable Transmits, Receives and pass up data frames
1375                  */
1376                 netdev_info(wlandev->netdev, "linkstatus=AP_INRANGE\n");
1377
1378                 hw->link_status = HFA384x_LINK_CONNECTED;
1379                 netif_carrier_on(wlandev->netdev);
1380
1381                 break;
1382
1383         case HFA384x_LINK_ASSOCFAIL:
1384                 /* This one is actually a peer to CONNECTED.  We've
1385                  * requested a join for a given SSID and optionally BSSID.
1386                  * We can use this one to indicate authentication and
1387                  * association failures.  The trick is going to be
1388                  * 1) identifying the failure, and 2) state management.
1389                  * Response:
1390                  * Disable Transmits, Ignore receives of data frames
1391                  */
1392                 if (hw->join_ap && --hw->join_retries > 0) {
1393                         hfa384x_JoinRequest_data_t joinreq;
1394
1395                         joinreq = hw->joinreq;
1396                         /* Send the join request */
1397                         hfa384x_drvr_setconfig(hw,
1398                                                HFA384x_RID_JOINREQUEST,
1399                                                &joinreq,
1400                                                HFA384x_RID_JOINREQUEST_LEN);
1401                         netdev_info(wlandev->netdev,
1402                                "linkstatus=ASSOCFAIL (re-submitting join)\n");
1403                 } else {
1404                         netdev_info(wlandev->netdev, "linkstatus=ASSOCFAIL (unhandled)\n");
1405                 }
1406
1407                 netif_carrier_off(wlandev->netdev);
1408
1409                 /* signal back up to cfg80211 layer */
1410                 prism2_connect_result(wlandev, P80211ENUM_truth_true);
1411
1412                 break;
1413
1414         default:
1415                 /* This is bad, IO port problems? */
1416                 netdev_warn(wlandev->netdev,
1417                        "unknown linkstatus=0x%02x\n", hw->link_status);
1418                 return;
1419         }
1420
1421         wlandev->linkstatus = (hw->link_status == HFA384x_LINK_CONNECTED);
1422 }
1423
1424 /*
1425  * prism2sta_inf_linkstatus
1426  *
1427  * Handles the receipt of a Link Status info frame.
1428  *
1429  * Arguments:
1430  *      wlandev         wlan device structure
1431  *      inf             ptr to info frame (contents in hfa384x order)
1432  *
1433  * Returns:
1434  *      nothing
1435  *
1436  * Side effects:
1437  *
1438  * Call context:
1439  *      interrupt
1440  */
1441 static void prism2sta_inf_linkstatus(wlandevice_t *wlandev,
1442                                      hfa384x_InfFrame_t *inf)
1443 {
1444         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
1445
1446         hw->link_status_new = le16_to_cpu(inf->info.linkstatus.linkstatus);
1447
1448         schedule_work(&hw->link_bh);
1449 }
1450
1451 /*
1452  * prism2sta_inf_assocstatus
1453  *
1454  * Handles the receipt of an Association Status info frame. Should
1455  * be present in APs only.
1456  *
1457  * Arguments:
1458  *      wlandev         wlan device structure
1459  *      inf             ptr to info frame (contents in hfa384x order)
1460  *
1461  * Returns:
1462  *      nothing
1463  *
1464  * Side effects:
1465  *
1466  * Call context:
1467  *      interrupt
1468  */
1469 static void prism2sta_inf_assocstatus(wlandevice_t *wlandev,
1470                                       hfa384x_InfFrame_t *inf)
1471 {
1472         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
1473         hfa384x_AssocStatus_t rec;
1474         int i;
1475
1476         memcpy(&rec, &inf->info.assocstatus, sizeof(rec));
1477         rec.assocstatus = le16_to_cpu(rec.assocstatus);
1478         rec.reason = le16_to_cpu(rec.reason);
1479
1480         /*
1481          * Find the address in the list of authenticated stations.
1482          * If it wasn't found, then this address has not been previously
1483          * authenticated and something weird has happened if this is
1484          * anything other than an "authentication failed" message.
1485          * If the address was found, then set the "associated" flag for
1486          * that station, based on whether the station is associating or
1487          * losing its association.  Something weird has also happened
1488          * if we find the address in the list of authenticated stations
1489          * but we are getting an "authentication failed" message.
1490          */
1491
1492         for (i = 0; i < hw->authlist.cnt; i++)
1493                 if (ether_addr_equal(rec.sta_addr, hw->authlist.addr[i]))
1494                         break;
1495
1496         if (i >= hw->authlist.cnt) {
1497                 if (rec.assocstatus != HFA384x_ASSOCSTATUS_AUTHFAIL)
1498                         netdev_warn(wlandev->netdev,
1499         "assocstatus info frame received for non-authenticated station.\n");
1500         } else {
1501                 hw->authlist.assoc[i] =
1502                     (rec.assocstatus == HFA384x_ASSOCSTATUS_STAASSOC ||
1503                      rec.assocstatus == HFA384x_ASSOCSTATUS_REASSOC);
1504
1505                 if (rec.assocstatus == HFA384x_ASSOCSTATUS_AUTHFAIL)
1506                         netdev_warn(wlandev->netdev,
1507 "authfail assocstatus info frame received for authenticated station.\n");
1508         }
1509 }
1510
1511 /*
1512  * prism2sta_inf_authreq
1513  *
1514  * Handles the receipt of an Authentication Request info frame. Should
1515  * be present in APs only.
1516  *
1517  * Arguments:
1518  *      wlandev         wlan device structure
1519  *      inf             ptr to info frame (contents in hfa384x order)
1520  *
1521  * Returns:
1522  *      nothing
1523  *
1524  * Side effects:
1525  *
1526  * Call context:
1527  *      interrupt
1528  *
1529  */
1530 static void prism2sta_inf_authreq(wlandevice_t *wlandev,
1531                                   hfa384x_InfFrame_t *inf)
1532 {
1533         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
1534         struct sk_buff *skb;
1535
1536         skb = dev_alloc_skb(sizeof(*inf));
1537         if (skb) {
1538                 skb_put(skb, sizeof(*inf));
1539                 memcpy(skb->data, inf, sizeof(*inf));
1540                 skb_queue_tail(&hw->authq, skb);
1541                 schedule_work(&hw->link_bh);
1542         }
1543 }
1544
1545 static void prism2sta_inf_authreq_defer(wlandevice_t *wlandev,
1546                                         hfa384x_InfFrame_t *inf)
1547 {
1548         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
1549         hfa384x_authenticateStation_data_t rec;
1550
1551         int i, added, result, cnt;
1552         u8 *addr;
1553
1554         /*
1555          * Build the AuthenticateStation record.  Initialize it for denying
1556          * authentication.
1557          */
1558
1559         ether_addr_copy(rec.address, inf->info.authreq.sta_addr);
1560         rec.status = P80211ENUM_status_unspec_failure;
1561
1562         /*
1563          * Authenticate based on the access mode.
1564          */
1565
1566         switch (hw->accessmode) {
1567         case WLAN_ACCESS_NONE:
1568
1569                 /*
1570                  * Deny all new authentications.  However, if a station
1571                  * is ALREADY authenticated, then accept it.
1572                  */
1573
1574                 for (i = 0; i < hw->authlist.cnt; i++)
1575                         if (ether_addr_equal(rec.address,
1576                                              hw->authlist.addr[i])) {
1577                                 rec.status = P80211ENUM_status_successful;
1578                                 break;
1579                         }
1580
1581                 break;
1582
1583         case WLAN_ACCESS_ALL:
1584
1585                 /*
1586                  * Allow all authentications.
1587                  */
1588
1589                 rec.status = P80211ENUM_status_successful;
1590                 break;
1591
1592         case WLAN_ACCESS_ALLOW:
1593
1594                 /*
1595                  * Only allow the authentication if the MAC address
1596                  * is in the list of allowed addresses.
1597                  *
1598                  * Since this is the interrupt handler, we may be here
1599                  * while the access list is in the middle of being
1600                  * updated.  Choose the list which is currently okay.
1601                  * See "prism2mib_priv_accessallow()" for details.
1602                  */
1603
1604                 if (hw->allow.modify == 0) {
1605                         cnt = hw->allow.cnt;
1606                         addr = hw->allow.addr[0];
1607                 } else {
1608                         cnt = hw->allow.cnt1;
1609                         addr = hw->allow.addr1[0];
1610                 }
1611
1612                 for (i = 0; i < cnt; i++, addr += ETH_ALEN)
1613                         if (ether_addr_equal(rec.address, addr)) {
1614                                 rec.status = P80211ENUM_status_successful;
1615                                 break;
1616                         }
1617
1618                 break;
1619
1620         case WLAN_ACCESS_DENY:
1621
1622                 /*
1623                  * Allow the authentication UNLESS the MAC address is
1624                  * in the list of denied addresses.
1625                  *
1626                  * Since this is the interrupt handler, we may be here
1627                  * while the access list is in the middle of being
1628                  * updated.  Choose the list which is currently okay.
1629                  * See "prism2mib_priv_accessdeny()" for details.
1630                  */
1631
1632                 if (hw->deny.modify == 0) {
1633                         cnt = hw->deny.cnt;
1634                         addr = hw->deny.addr[0];
1635                 } else {
1636                         cnt = hw->deny.cnt1;
1637                         addr = hw->deny.addr1[0];
1638                 }
1639
1640                 rec.status = P80211ENUM_status_successful;
1641
1642                 for (i = 0; i < cnt; i++, addr += ETH_ALEN)
1643                         if (ether_addr_equal(rec.address, addr)) {
1644                                 rec.status = P80211ENUM_status_unspec_failure;
1645                                 break;
1646                         }
1647
1648                 break;
1649         }
1650
1651         /*
1652          * If the authentication is okay, then add the MAC address to the
1653          * list of authenticated stations.  Don't add the address if it
1654          * is already in the list. (802.11b does not seem to disallow
1655          * a station from issuing an authentication request when the
1656          * station is already authenticated. Does this sort of thing
1657          * ever happen?  We might as well do the check just in case.)
1658          */
1659
1660         added = 0;
1661
1662         if (rec.status == P80211ENUM_status_successful) {
1663                 for (i = 0; i < hw->authlist.cnt; i++)
1664                         if (ether_addr_equal(rec.address,
1665                                              hw->authlist.addr[i]))
1666                                 break;
1667
1668                 if (i >= hw->authlist.cnt) {
1669                         if (hw->authlist.cnt >= WLAN_AUTH_MAX) {
1670                                 rec.status = P80211ENUM_status_ap_full;
1671                         } else {
1672                                 ether_addr_copy(
1673                                         hw->authlist.addr[hw->authlist.cnt],
1674                                         rec.address);
1675                                 hw->authlist.cnt++;
1676                                 added = 1;
1677                         }
1678                 }
1679         }
1680
1681         /*
1682          * Send back the results of the authentication.  If this doesn't work,
1683          * then make sure to remove the address from the authenticated list if
1684          * it was added.
1685          */
1686
1687         rec.status = cpu_to_le16(rec.status);
1688         rec.algorithm = inf->info.authreq.algorithm;
1689
1690         result = hfa384x_drvr_setconfig(hw, HFA384x_RID_AUTHENTICATESTA,
1691                                         &rec, sizeof(rec));
1692         if (result) {
1693                 if (added)
1694                         hw->authlist.cnt--;
1695                 netdev_err(wlandev->netdev,
1696                        "setconfig(authenticatestation) failed, result=%d\n",
1697                        result);
1698         }
1699 }
1700
1701 /*
1702  * prism2sta_inf_psusercnt
1703  *
1704  * Handles the receipt of a PowerSaveUserCount info frame. Should
1705  * be present in APs only.
1706  *
1707  * Arguments:
1708  *      wlandev         wlan device structure
1709  *      inf             ptr to info frame (contents in hfa384x order)
1710  *
1711  * Returns:
1712  *      nothing
1713  *
1714  * Side effects:
1715  *
1716  * Call context:
1717  *      interrupt
1718  */
1719 static void prism2sta_inf_psusercnt(wlandevice_t *wlandev,
1720                                     hfa384x_InfFrame_t *inf)
1721 {
1722         hfa384x_t *hw = (hfa384x_t *) wlandev->priv;
1723
1724         hw->psusercount = le16_to_cpu(inf->info.psusercnt.usercnt);
1725 }
1726
1727 /*
1728  * prism2sta_ev_info
1729  *
1730  * Handles the Info event.
1731  *
1732  * Arguments:
1733  *      wlandev         wlan device structure
1734  *      inf             ptr to a generic info frame
1735  *
1736  * Returns:
1737  *      nothing
1738  *
1739  * Side effects:
1740  *
1741  * Call context:
1742  *      interrupt
1743  */
1744 void prism2sta_ev_info(wlandevice_t *wlandev, hfa384x_InfFrame_t *inf)
1745 {
1746         inf->infotype = le16_to_cpu(inf->infotype);
1747         /* Dispatch */
1748         switch (inf->infotype) {
1749         case HFA384x_IT_HANDOVERADDR:
1750                 prism2sta_inf_handover(wlandev, inf);
1751                 break;
1752         case HFA384x_IT_COMMTALLIES:
1753                 prism2sta_inf_tallies(wlandev, inf);
1754                 break;
1755         case HFA384x_IT_HOSTSCANRESULTS:
1756                 prism2sta_inf_hostscanresults(wlandev, inf);
1757                 break;
1758         case HFA384x_IT_SCANRESULTS:
1759                 prism2sta_inf_scanresults(wlandev, inf);
1760                 break;
1761         case HFA384x_IT_CHINFORESULTS:
1762                 prism2sta_inf_chinforesults(wlandev, inf);
1763                 break;
1764         case HFA384x_IT_LINKSTATUS:
1765                 prism2sta_inf_linkstatus(wlandev, inf);
1766                 break;
1767         case HFA384x_IT_ASSOCSTATUS:
1768                 prism2sta_inf_assocstatus(wlandev, inf);
1769                 break;
1770         case HFA384x_IT_AUTHREQ:
1771                 prism2sta_inf_authreq(wlandev, inf);
1772                 break;
1773         case HFA384x_IT_PSUSERCNT:
1774                 prism2sta_inf_psusercnt(wlandev, inf);
1775                 break;
1776         case HFA384x_IT_KEYIDCHANGED:
1777                 netdev_warn(wlandev->netdev, "Unhandled IT_KEYIDCHANGED\n");
1778                 break;
1779         case HFA384x_IT_ASSOCREQ:
1780                 netdev_warn(wlandev->netdev, "Unhandled IT_ASSOCREQ\n");
1781                 break;
1782         case HFA384x_IT_MICFAILURE:
1783                 netdev_warn(wlandev->netdev, "Unhandled IT_MICFAILURE\n");
1784                 break;
1785         default:
1786                 netdev_warn(wlandev->netdev,
1787                        "Unknown info type=0x%02x\n", inf->infotype);
1788                 break;
1789         }
1790 }
1791
1792 /*
1793  * prism2sta_ev_txexc
1794  *
1795  * Handles the TxExc event.  A Transmit Exception event indicates
1796  * that the MAC's TX process was unsuccessful - so the packet did
1797  * not get transmitted.
1798  *
1799  * Arguments:
1800  *      wlandev         wlan device structure
1801  *      status          tx frame status word
1802  *
1803  * Returns:
1804  *      nothing
1805  *
1806  * Side effects:
1807  *
1808  * Call context:
1809  *      interrupt
1810  */
1811 void prism2sta_ev_txexc(wlandevice_t *wlandev, u16 status)
1812 {
1813         pr_debug("TxExc status=0x%x.\n", status);
1814 }
1815
1816 /*
1817  * prism2sta_ev_tx
1818  *
1819  * Handles the Tx event.
1820  *
1821  * Arguments:
1822  *      wlandev         wlan device structure
1823  *      status          tx frame status word
1824  * Returns:
1825  *      nothing
1826  *
1827  * Side effects:
1828  *
1829  * Call context:
1830  *      interrupt
1831  */
1832 void prism2sta_ev_tx(wlandevice_t *wlandev, u16 status)
1833 {
1834         pr_debug("Tx Complete, status=0x%04x\n", status);
1835         /* update linux network stats */
1836         wlandev->netdev->stats.tx_packets++;
1837 }
1838
1839 /*
1840  * prism2sta_ev_rx
1841  *
1842  * Handles the Rx event.
1843  *
1844  * Arguments:
1845  *      wlandev         wlan device structure
1846  *
1847  * Returns:
1848  *      nothing
1849  *
1850  * Side effects:
1851  *
1852  * Call context:
1853  *      interrupt
1854  */
1855 void prism2sta_ev_rx(wlandevice_t *wlandev, struct sk_buff *skb)
1856 {
1857         p80211netdev_rx(wlandev, skb);
1858 }
1859
1860 /*
1861  * prism2sta_ev_alloc
1862  *
1863  * Handles the Alloc event.
1864  *
1865  * Arguments:
1866  *      wlandev         wlan device structure
1867  *
1868  * Returns:
1869  *      nothing
1870  *
1871  * Side effects:
1872  *
1873  * Call context:
1874  *      interrupt
1875  */
1876 void prism2sta_ev_alloc(wlandevice_t *wlandev)
1877 {
1878         netif_wake_queue(wlandev->netdev);
1879 }
1880
1881 /*
1882 * create_wlan
1883 *
1884 * Called at module init time.  This creates the wlandevice_t structure
1885 * and initializes it with relevant bits.
1886 *
1887 * Arguments:
1888 *       none
1889 *
1890 * Returns:
1891 *       the created wlandevice_t structure.
1892 *
1893 * Side effects:
1894 *       also allocates the priv/hw structures.
1895 *
1896 * Call context:
1897 *       process thread
1898 *
1899 */
1900 static wlandevice_t *create_wlan(void)
1901 {
1902         wlandevice_t *wlandev = NULL;
1903         hfa384x_t *hw = NULL;
1904
1905         /* Alloc our structures */
1906         wlandev = kzalloc(sizeof(wlandevice_t), GFP_KERNEL);
1907         hw = kzalloc(sizeof(hfa384x_t), GFP_KERNEL);
1908
1909         if (!wlandev || !hw) {
1910                 pr_err("%s: Memory allocation failure.\n", dev_info);
1911                 kfree(wlandev);
1912                 kfree(hw);
1913                 return NULL;
1914         }
1915
1916         /* Initialize the network device object. */
1917         wlandev->nsdname = dev_info;
1918         wlandev->msdstate = WLAN_MSD_HWPRESENT_PENDING;
1919         wlandev->priv = hw;
1920         wlandev->open = prism2sta_open;
1921         wlandev->close = prism2sta_close;
1922         wlandev->reset = prism2sta_reset;
1923         wlandev->txframe = prism2sta_txframe;
1924         wlandev->mlmerequest = prism2sta_mlmerequest;
1925         wlandev->set_multicast_list = prism2sta_setmulticast;
1926         wlandev->tx_timeout = hfa384x_tx_timeout;
1927
1928         wlandev->nsdcaps = P80211_NSDCAP_HWFRAGMENT | P80211_NSDCAP_AUTOJOIN;
1929
1930         /* Initialize the device private data structure. */
1931         hw->dot11_desired_bss_type = 1;
1932
1933         return wlandev;
1934 }
1935
1936 void prism2sta_commsqual_defer(struct work_struct *data)
1937 {
1938         hfa384x_t *hw = container_of(data, struct hfa384x, commsqual_bh);
1939         wlandevice_t *wlandev = hw->wlandev;
1940         hfa384x_bytestr32_t ssid;
1941         struct p80211msg_dot11req_mibget msg;
1942         p80211item_uint32_t *mibitem = (p80211item_uint32_t *)
1943                                                 &msg.mibattribute.data;
1944         int result = 0;
1945
1946         if (hw->wlandev->hwremoved)
1947                 return;
1948
1949         /* we don't care if we're in AP mode */
1950         if ((wlandev->macmode == WLAN_MACMODE_NONE) ||
1951             (wlandev->macmode == WLAN_MACMODE_ESS_AP)) {
1952                 return;
1953         }
1954
1955         /* It only makes sense to poll these in non-IBSS */
1956         if (wlandev->macmode != WLAN_MACMODE_IBSS_STA) {
1957                 result = hfa384x_drvr_getconfig(
1958                                 hw, HFA384x_RID_DBMCOMMSQUALITY,
1959                                 &hw->qual, HFA384x_RID_DBMCOMMSQUALITY_LEN);
1960
1961                 if (result) {
1962                         netdev_err(wlandev->netdev, "error fetching commsqual\n");
1963                         return;
1964                 }
1965
1966                 pr_debug("commsqual %d %d %d\n",
1967                          le16_to_cpu(hw->qual.CQ_currBSS),
1968                          le16_to_cpu(hw->qual.ASL_currBSS),
1969                          le16_to_cpu(hw->qual.ANL_currFC));
1970         }
1971
1972         /* Get the signal rate */
1973         msg.msgcode = DIDmsg_dot11req_mibget;
1974         mibitem->did = DIDmib_p2_p2MAC_p2CurrentTxRate;
1975         result = p80211req_dorequest(wlandev, (u8 *) &msg);
1976
1977         if (result) {
1978                 pr_debug("get signal rate failed, result = %d\n",
1979                          result);
1980                 return;
1981         }
1982
1983         switch (mibitem->data) {
1984         case HFA384x_RATEBIT_1:
1985                 hw->txrate = 10;
1986                 break;
1987         case HFA384x_RATEBIT_2:
1988                 hw->txrate = 20;
1989                 break;
1990         case HFA384x_RATEBIT_5dot5:
1991                 hw->txrate = 55;
1992                 break;
1993         case HFA384x_RATEBIT_11:
1994                 hw->txrate = 110;
1995                 break;
1996         default:
1997                 pr_debug("Bad ratebit (%d)\n", mibitem->data);
1998         }
1999
2000         /* Lastly, we need to make sure the BSSID didn't change on us */
2001         result = hfa384x_drvr_getconfig(hw,
2002                                         HFA384x_RID_CURRENTBSSID,
2003                                         wlandev->bssid, WLAN_BSSID_LEN);
2004         if (result) {
2005                 pr_debug("getconfig(0x%02x) failed, result = %d\n",
2006                          HFA384x_RID_CURRENTBSSID, result);
2007                 return;
2008         }
2009
2010         result = hfa384x_drvr_getconfig(hw,
2011                                         HFA384x_RID_CURRENTSSID,
2012                                         &ssid, sizeof(ssid));
2013         if (result) {
2014                 pr_debug("getconfig(0x%02x) failed, result = %d\n",
2015                          HFA384x_RID_CURRENTSSID, result);
2016                 return;
2017         }
2018         prism2mgmt_bytestr2pstr((struct hfa384x_bytestr *) &ssid,
2019                                 (p80211pstrd_t *) &wlandev->ssid);
2020
2021         /* Reschedule timer */
2022         mod_timer(&hw->commsqual_timer, jiffies + HZ);
2023 }
2024
2025 void prism2sta_commsqual_timer(unsigned long data)
2026 {
2027         hfa384x_t *hw = (hfa384x_t *) data;
2028
2029         schedule_work(&hw->commsqual_bh);
2030 }