git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/libertas/cmdresp.c

   1 /**
   2   * This file contains the handling of command
   3   * responses as well as events generated by firmware.
   4   */
   5 #include <linux/delay.h>
   6 #include <linux/if_arp.h>
   7 #include <linux/netdevice.h>
   8
   9 #include <net/iw_handler.h>
  10
  11 #include "host.h"
  12 #include "decl.h"
  13 #include "defs.h"
  14 #include "dev.h"
  15 #include "join.h"
  16 #include "wext.h"
  17
  18 /**
  19  *  @brief This function handles disconnect event. it
  20  *  reports disconnect to upper layer, clean tx/rx packets,
  21  *  reset link state etc.
  22  *
  23  *  @param priv    A pointer to struct lbs_private structure
  24  *  @return        n/a
  25  */
  26 void lbs_mac_event_disconnected(struct lbs_private *priv)
  27 {
  28         union iwreq_data wrqu;
  29
  30         if (priv->connect_status != LBS_CONNECTED)
  31                 return;
  32
  33         lbs_deb_enter(LBS_DEB_ASSOC);
  34
  35         memset(wrqu.ap_addr.sa_data, 0x00, ETH_ALEN);
  36         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
  37
  38         /*
  39          * Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
  40          * It causes problem in the Supplicant
  41          */
  42
  43         msleep_interruptible(1000);
  44         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
  45
  46         /* report disconnect to upper layer */
  47         netif_stop_queue(priv->dev);
  48         netif_carrier_off(priv->dev);
  49
  50         /* Free Tx and Rx packets */
  51         kfree_skb(priv->currenttxskb);
  52         priv->currenttxskb = NULL;
  53         priv->tx_pending_len = 0;
  54
  55         /* reset SNR/NF/RSSI values */
  56         memset(priv->SNR, 0x00, sizeof(priv->SNR));
  57         memset(priv->NF, 0x00, sizeof(priv->NF));
  58         memset(priv->RSSI, 0x00, sizeof(priv->RSSI));
  59         memset(priv->rawSNR, 0x00, sizeof(priv->rawSNR));
  60         memset(priv->rawNF, 0x00, sizeof(priv->rawNF));
  61         priv->nextSNRNF = 0;
  62         priv->numSNRNF = 0;
  63         priv->connect_status = LBS_DISCONNECTED;
  64
  65         /* Clear out associated SSID and BSSID since connection is
  66          * no longer valid.
  67          */
  68         memset(&priv->curbssparams.bssid, 0, ETH_ALEN);
  69         memset(&priv->curbssparams.ssid, 0, IW_ESSID_MAX_SIZE);
  70         priv->curbssparams.ssid_len = 0;
  71
  72         if (priv->psstate != PS_STATE_FULL_POWER) {
  73                 /* make firmware to exit PS mode */
  74                 lbs_deb_cmd("disconnected, so exit PS mode\n");
  75                 lbs_ps_wakeup(priv, 0);
  76         }
  77         lbs_deb_leave(LBS_DEB_ASSOC);
  78 }
  79
  80 /**
  81  *  @brief This function handles MIC failure event.
  82  *
  83  *  @param priv    A pointer to struct lbs_private structure
  84  *  @para  event   the event id
  85  *  @return        n/a
  86  */
  87 static void handle_mic_failureevent(struct lbs_private *priv, u32 event)
  88 {
  89         char buf[50];
  90
  91         lbs_deb_enter(LBS_DEB_CMD);
  92         memset(buf, 0, sizeof(buf));
  93
  94         sprintf(buf, "%s", "MLME-MICHAELMICFAILURE.indication ");
  95
  96         if (event == MACREG_INT_CODE_MIC_ERR_UNICAST) {
  97                 strcat(buf, "unicast ");
  98         } else {
  99                 strcat(buf, "multicast ");
 100         }
 101
 102         lbs_send_iwevcustom_event(priv, buf);
 103         lbs_deb_leave(LBS_DEB_CMD);
 104 }
 105
 106 static int lbs_ret_reg_access(struct lbs_private *priv,
 107                                u16 type, struct cmd_ds_command *resp)
 108 {
 109         int ret = 0;
 110
 111         lbs_deb_enter(LBS_DEB_CMD);
 112
 113         switch (type) {
 114         case CMD_RET(CMD_MAC_REG_ACCESS):
 115                 {
 116                         struct cmd_ds_mac_reg_access *reg = &resp->params.macreg;
 117
 118                         priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
 119                         priv->offsetvalue.value = le32_to_cpu(reg->value);
 120                         break;
 121                 }
 122
 123         case CMD_RET(CMD_BBP_REG_ACCESS):
 124                 {
 125                         struct cmd_ds_bbp_reg_access *reg = &resp->params.bbpreg;
 126
 127                         priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
 128                         priv->offsetvalue.value = reg->value;
 129                         break;
 130                 }
 131
 132         case CMD_RET(CMD_RF_REG_ACCESS):
 133                 {
 134                         struct cmd_ds_rf_reg_access *reg = &resp->params.rfreg;
 135
 136                         priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
 137                         priv->offsetvalue.value = reg->value;
 138                         break;
 139                 }
 140
 141         default:
 142                 ret = -1;
 143         }
 144
 145         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 146         return ret;
 147 }
 148
 149 static int lbs_ret_802_11_stat(struct lbs_private *priv,
 150                                 struct cmd_ds_command *resp)
 151 {
 152         lbs_deb_enter(LBS_DEB_CMD);
 153 /*      currently priv->wlan802_11Stat is unused
 154
 155         struct cmd_ds_802_11_get_stat *p11Stat = &resp->params.gstat;
 156
 157         // TODO Convert it to Big endian befor copy
 158         memcpy(&priv->wlan802_11Stat,
 159                p11Stat, sizeof(struct cmd_ds_802_11_get_stat));
 160 */
 161         lbs_deb_leave(LBS_DEB_CMD);
 162         return 0;
 163 }
 164
 165 static int lbs_ret_802_11_snmp_mib(struct lbs_private *priv,
 166                                     struct cmd_ds_command *resp)
 167 {
 168         struct cmd_ds_802_11_snmp_mib *smib = &resp->params.smib;
 169         u16 oid = le16_to_cpu(smib->oid);
 170         u16 querytype = le16_to_cpu(smib->querytype);
 171
 172         lbs_deb_enter(LBS_DEB_CMD);
 173
 174         lbs_deb_cmd("SNMP_RESP: oid 0x%x, querytype 0x%x\n", oid,
 175                querytype);
 176         lbs_deb_cmd("SNMP_RESP: Buf size %d\n", le16_to_cpu(smib->bufsize));
 177
 178         if (querytype == CMD_ACT_GET) {
 179                 switch (oid) {
 180                 case FRAGTHRESH_I:
 181                         priv->fragthsd =
 182                                 le16_to_cpu(*((__le16 *)(smib->value)));
 183                         lbs_deb_cmd("SNMP_RESP: frag threshold %u\n",
 184                                     priv->fragthsd);
 185                         break;
 186                 case RTSTHRESH_I:
 187                         priv->rtsthsd =
 188                                 le16_to_cpu(*((__le16 *)(smib->value)));
 189                         lbs_deb_cmd("SNMP_RESP: rts threshold %u\n",
 190                                     priv->rtsthsd);
 191                         break;
 192                 case SHORT_RETRYLIM_I:
 193                         priv->txretrycount =
 194                                 le16_to_cpu(*((__le16 *)(smib->value)));
 195                         lbs_deb_cmd("SNMP_RESP: tx retry count %u\n",
 196                                     priv->rtsthsd);
 197                         break;
 198                 default:
 199                         break;
 200                 }
 201         }
 202
 203         lbs_deb_enter(LBS_DEB_CMD);
 204         return 0;
 205 }
 206
 207 static int lbs_ret_802_11_mac_address(struct lbs_private *priv,
 208                                        struct cmd_ds_command *resp)
 209 {
 210         struct cmd_ds_802_11_mac_address *macadd = &resp->params.macadd;
 211
 212         lbs_deb_enter(LBS_DEB_CMD);
 213
 214         memcpy(priv->current_addr, macadd->macadd, ETH_ALEN);
 215
 216         lbs_deb_enter(LBS_DEB_CMD);
 217         return 0;
 218 }
 219
 220 static int lbs_ret_802_11_rf_tx_power(struct lbs_private *priv,
 221                                        struct cmd_ds_command *resp)
 222 {
 223         struct cmd_ds_802_11_rf_tx_power *rtp = &resp->params.txp;
 224
 225         lbs_deb_enter(LBS_DEB_CMD);
 226
 227         priv->txpowerlevel = le16_to_cpu(rtp->currentlevel);
 228
 229         lbs_deb_cmd("TX power currently %d\n", priv->txpowerlevel);
 230
 231         lbs_deb_leave(LBS_DEB_CMD);
 232         return 0;
 233 }
 234
 235 static int lbs_ret_802_11_rate_adapt_rateset(struct lbs_private *priv,
 236                                               struct cmd_ds_command *resp)
 237 {
 238         struct cmd_ds_802_11_rate_adapt_rateset *rates = &resp->params.rateset;
 239
 240         lbs_deb_enter(LBS_DEB_CMD);
 241
 242         if (rates->action == CMD_ACT_GET) {
 243                 priv->enablehwauto = le16_to_cpu(rates->enablehwauto);
 244                 priv->ratebitmap = le16_to_cpu(rates->bitmap);
 245         }
 246
 247         lbs_deb_leave(LBS_DEB_CMD);
 248         return 0;
 249 }
 250
 251 static int lbs_ret_802_11_rssi(struct lbs_private *priv,
 252                                 struct cmd_ds_command *resp)
 253 {
 254         struct cmd_ds_802_11_rssi_rsp *rssirsp = &resp->params.rssirsp;
 255
 256         lbs_deb_enter(LBS_DEB_CMD);
 257
 258         /* store the non average value */
 259         priv->SNR[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->SNR);
 260         priv->NF[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->noisefloor);
 261
 262         priv->SNR[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgSNR);
 263         priv->NF[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgnoisefloor);
 264
 265         priv->RSSI[TYPE_BEACON][TYPE_NOAVG] =
 266             CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_NOAVG],
 267                      priv->NF[TYPE_BEACON][TYPE_NOAVG]);
 268
 269         priv->RSSI[TYPE_BEACON][TYPE_AVG] =
 270             CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_AVG] / AVG_SCALE,
 271                      priv->NF[TYPE_BEACON][TYPE_AVG] / AVG_SCALE);
 272
 273         lbs_deb_cmd("RSSI: beacon %d, avg %d\n",
 274                priv->RSSI[TYPE_BEACON][TYPE_NOAVG],
 275                priv->RSSI[TYPE_BEACON][TYPE_AVG]);
 276
 277         lbs_deb_leave(LBS_DEB_CMD);
 278         return 0;
 279 }
 280
 281 static int lbs_ret_802_11_eeprom_access(struct lbs_private *priv,
 282                                   struct cmd_ds_command *resp)
 283 {
 284         struct lbs_ioctl_regrdwr *pbuf;
 285         pbuf = (struct lbs_ioctl_regrdwr *) priv->prdeeprom;
 286
 287         lbs_deb_enter_args(LBS_DEB_CMD, "len %d",
 288                le16_to_cpu(resp->params.rdeeprom.bytecount));
 289         if (pbuf->NOB < le16_to_cpu(resp->params.rdeeprom.bytecount)) {
 290                 pbuf->NOB = 0;
 291                 lbs_deb_cmd("EEPROM read length too big\n");
 292                 return -1;
 293         }
 294         pbuf->NOB = le16_to_cpu(resp->params.rdeeprom.bytecount);
 295         if (pbuf->NOB > 0) {
 296
 297                 memcpy(&pbuf->value, (u8 *) & resp->params.rdeeprom.value,
 298                        le16_to_cpu(resp->params.rdeeprom.bytecount));
 299                 lbs_deb_hex(LBS_DEB_CMD, "EEPROM", (char *)&pbuf->value,
 300                         le16_to_cpu(resp->params.rdeeprom.bytecount));
 301         }
 302         lbs_deb_leave(LBS_DEB_CMD);
 303         return 0;
 304 }
 305
 306 static int lbs_ret_get_log(struct lbs_private *priv,
 307                             struct cmd_ds_command *resp)
 308 {
 309         struct cmd_ds_802_11_get_log *logmessage = &resp->params.glog;
 310
 311         lbs_deb_enter(LBS_DEB_CMD);
 312
 313         /* Stored little-endian */
 314         memcpy(&priv->logmsg, logmessage, sizeof(struct cmd_ds_802_11_get_log));
 315
 316         lbs_deb_leave(LBS_DEB_CMD);
 317         return 0;
 318 }
 319
 320 static int lbs_ret_802_11_bcn_ctrl(struct lbs_private * priv,
 321                                         struct cmd_ds_command *resp)
 322 {
 323         struct cmd_ds_802_11_beacon_control *bcn_ctrl =
 324             &resp->params.bcn_ctrl;
 325
 326         lbs_deb_enter(LBS_DEB_CMD);
 327
 328         if (bcn_ctrl->action == CMD_ACT_GET) {
 329                 priv->beacon_enable = (u8) le16_to_cpu(bcn_ctrl->beacon_enable);
 330                 priv->beacon_period = le16_to_cpu(bcn_ctrl->beacon_period);
 331         }
 332
 333         lbs_deb_enter(LBS_DEB_CMD);
 334         return 0;
 335 }
 336
 337 static inline int handle_cmd_response(struct lbs_private *priv,
 338                                       unsigned long dummy,
 339                                       struct cmd_header *cmd_response)
 340 {
 341         struct cmd_ds_command *resp = (struct cmd_ds_command *) cmd_response;
 342         int ret = 0;
 343         unsigned long flags;
 344         uint16_t respcmd = le16_to_cpu(resp->command);
 345
 346         lbs_deb_enter(LBS_DEB_HOST);
 347
 348         switch (respcmd) {
 349         case CMD_RET(CMD_MAC_REG_ACCESS):
 350         case CMD_RET(CMD_BBP_REG_ACCESS):
 351         case CMD_RET(CMD_RF_REG_ACCESS):
 352                 ret = lbs_ret_reg_access(priv, respcmd, resp);
 353                 break;
 354
 355         case CMD_RET(CMD_802_11_SCAN):
 356                 ret = lbs_ret_80211_scan(priv, resp);
 357                 break;
 358
 359         case CMD_RET(CMD_802_11_GET_LOG):
 360                 ret = lbs_ret_get_log(priv, resp);
 361                 break;
 362
 363         case CMD_RET_802_11_ASSOCIATE:
 364         case CMD_RET(CMD_802_11_ASSOCIATE):
 365         case CMD_RET(CMD_802_11_REASSOCIATE):
 366                 ret = lbs_ret_80211_associate(priv, resp);
 367                 break;
 368
 369         case CMD_RET(CMD_802_11_DISASSOCIATE):
 370         case CMD_RET(CMD_802_11_DEAUTHENTICATE):
 371                 ret = lbs_ret_80211_disassociate(priv, resp);
 372                 break;
 373
 374         case CMD_RET(CMD_802_11_AD_HOC_START):
 375         case CMD_RET(CMD_802_11_AD_HOC_JOIN):
 376                 ret = lbs_ret_80211_ad_hoc_start(priv, resp);
 377                 break;
 378
 379         case CMD_RET(CMD_802_11_GET_STAT):
 380                 ret = lbs_ret_802_11_stat(priv, resp);
 381                 break;
 382
 383         case CMD_RET(CMD_802_11_SNMP_MIB):
 384                 ret = lbs_ret_802_11_snmp_mib(priv, resp);
 385                 break;
 386
 387         case CMD_RET(CMD_802_11_RF_TX_POWER):
 388                 ret = lbs_ret_802_11_rf_tx_power(priv, resp);
 389                 break;
 390
 391         case CMD_RET(CMD_802_11_SET_AFC):
 392         case CMD_RET(CMD_802_11_GET_AFC):
 393                 spin_lock_irqsave(&priv->driver_lock, flags);
 394                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
 395                         sizeof(struct cmd_ds_802_11_afc));
 396                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 397
 398                 break;
 399
 400         case CMD_RET(CMD_MAC_MULTICAST_ADR):
 401         case CMD_RET(CMD_MAC_CONTROL):
 402         case CMD_RET(CMD_802_11_RESET):
 403         case CMD_RET(CMD_802_11_AUTHENTICATE):
 404         case CMD_RET(CMD_802_11_BEACON_STOP):
 405                 break;
 406
 407         case CMD_RET(CMD_802_11_RATE_ADAPT_RATESET):
 408                 ret = lbs_ret_802_11_rate_adapt_rateset(priv, resp);
 409                 break;
 410
 411         case CMD_RET(CMD_802_11_RSSI):
 412                 ret = lbs_ret_802_11_rssi(priv, resp);
 413                 break;
 414
 415         case CMD_RET(CMD_802_11_MAC_ADDRESS):
 416                 ret = lbs_ret_802_11_mac_address(priv, resp);
 417                 break;
 418
 419         case CMD_RET(CMD_802_11_AD_HOC_STOP):
 420                 ret = lbs_ret_80211_ad_hoc_stop(priv, resp);
 421                 break;
 422
 423         case CMD_RET(CMD_802_11_EEPROM_ACCESS):
 424                 ret = lbs_ret_802_11_eeprom_access(priv, resp);
 425                 break;
 426
 427         case CMD_RET(CMD_802_11D_DOMAIN_INFO):
 428                 ret = lbs_ret_802_11d_domain_info(priv, resp);
 429                 break;
 430
 431         case CMD_RET(CMD_802_11_TPC_CFG):
 432                 spin_lock_irqsave(&priv->driver_lock, flags);
 433                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
 434                         sizeof(struct cmd_ds_802_11_tpc_cfg));
 435                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 436                 break;
 437         case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
 438                 spin_lock_irqsave(&priv->driver_lock, flags);
 439                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.ledgpio,
 440                         sizeof(struct cmd_ds_802_11_led_ctrl));
 441                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 442                 break;
 443
 444         case CMD_RET(CMD_802_11_PWR_CFG):
 445                 spin_lock_irqsave(&priv->driver_lock, flags);
 446                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.pwrcfg,
 447                         sizeof(struct cmd_ds_802_11_pwr_cfg));
 448                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 449
 450                 break;
 451
 452         case CMD_RET(CMD_GET_TSF):
 453                 spin_lock_irqsave(&priv->driver_lock, flags);
 454                 memcpy((void *)priv->cur_cmd->callback_arg,
 455                        &resp->params.gettsf.tsfvalue, sizeof(u64));
 456                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 457                 break;
 458         case CMD_RET(CMD_BT_ACCESS):
 459                 spin_lock_irqsave(&priv->driver_lock, flags);
 460                 if (priv->cur_cmd->callback_arg)
 461                         memcpy((void *)priv->cur_cmd->callback_arg,
 462                                &resp->params.bt.addr1, 2 * ETH_ALEN);
 463                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 464                 break;
 465         case CMD_RET(CMD_FWT_ACCESS):
 466                 spin_lock_irqsave(&priv->driver_lock, flags);
 467                 if (priv->cur_cmd->callback_arg)
 468                         memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
 469                                sizeof(resp->params.fwt));
 470                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 471                 break;
 472         case CMD_RET(CMD_802_11_BEACON_CTRL):
 473                 ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
 474                 break;
 475
 476         default:
 477                 lbs_deb_host("CMD_RESP: unknown cmd response 0x%04x\n",
 478                              le16_to_cpu(resp->command));
 479                 break;
 480         }
 481         lbs_deb_leave(LBS_DEB_HOST);
 482         return ret;
 483 }
 484
 485 int lbs_process_rx_command(struct lbs_private *priv)
 486 {
 487         uint16_t respcmd, curcmd;
 488         struct cmd_header *resp;
 489         int ret = 0;
 490         unsigned long flags;
 491         uint16_t result;
 492
 493         lbs_deb_enter(LBS_DEB_HOST);
 494
 495         mutex_lock(&priv->lock);
 496         spin_lock_irqsave(&priv->driver_lock, flags);
 497
 498         if (!priv->cur_cmd) {
 499                 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
 500                 ret = -1;
 501                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 502                 goto done;
 503         }
 504
 505         resp = (void *)priv->upld_buf;
 506         curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
 507         respcmd = le16_to_cpu(resp->command);
 508         result = le16_to_cpu(resp->result);
 509
 510         lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d, jiffies %lu\n",
 511                      respcmd, le16_to_cpu(resp->seqnum), priv->upld_len, jiffies);
 512         lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, priv->upld_len);
 513
 514         if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
 515                 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
 516                             le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
 517                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 518                 ret = -1;
 519                 goto done;
 520         }
 521         if (respcmd != CMD_RET(curcmd) &&
 522             respcmd != CMD_802_11_ASSOCIATE && curcmd != CMD_RET_802_11_ASSOCIATE) {
 523                 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
 524                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 525                 ret = -1;
 526                 goto done;
 527         }
 528
 529         if (resp->result == cpu_to_le16(0x0004)) {
 530                 /* 0x0004 means -EAGAIN. Drop the response, let it time out
 531                    and be resubmitted */
 532                 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
 533                             le16_to_cpu(resp->command));
 534                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 535                 ret = -1;
 536                 goto done;
 537         }
 538
 539         /* Now we got response from FW, cancel the command timer */
 540         del_timer(&priv->command_timer);
 541         priv->cmd_timed_out = 0;
 542         if (priv->nr_retries) {
 543                 lbs_pr_info("Received result %x to command %x after %d retries\n",
 544                             result, curcmd, priv->nr_retries);
 545                 priv->nr_retries = 0;
 546         }
 547
 548         /* Store the response code to cur_cmd_retcode. */
 549         priv->cur_cmd_retcode = result;
 550
 551         if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
 552                 struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
 553                 u16 action = le16_to_cpu(psmode->action);
 554
 555                 lbs_deb_host(
 556                        "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
 557                        result, action);
 558
 559                 if (result) {
 560                         lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
 561                                     result);
 562                         /*
 563                          * We should not re-try enter-ps command in
 564                          * ad-hoc mode. It takes place in
 565                          * lbs_execute_next_command().
 566                          */
 567                         if (priv->mode == IW_MODE_ADHOC &&
 568                             action == CMD_SUBCMD_ENTER_PS)
 569                                 priv->psmode = LBS802_11POWERMODECAM;
 570                 } else if (action == CMD_SUBCMD_ENTER_PS) {
 571                         priv->needtowakeup = 0;
 572                         priv->psstate = PS_STATE_AWAKE;
 573
 574                         lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
 575                         if (priv->connect_status != LBS_CONNECTED) {
 576                                 /*
 577                                  * When Deauth Event received before Enter_PS command
 578                                  * response, We need to wake up the firmware.
 579                                  */
 580                                 lbs_deb_host(
 581                                        "disconnected, invoking lbs_ps_wakeup\n");
 582
 583                                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 584                                 mutex_unlock(&priv->lock);
 585                                 lbs_ps_wakeup(priv, 0);
 586                                 mutex_lock(&priv->lock);
 587                                 spin_lock_irqsave(&priv->driver_lock, flags);
 588                         }
 589                 } else if (action == CMD_SUBCMD_EXIT_PS) {
 590                         priv->needtowakeup = 0;
 591                         priv->psstate = PS_STATE_FULL_POWER;
 592                         lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
 593                 } else {
 594                         lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
 595                 }
 596
 597                 lbs_complete_command(priv, priv->cur_cmd, result);
 598                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 599
 600                 ret = 0;
 601                 goto done;
 602         }
 603
 604         /* If the command is not successful, cleanup and return failure */
 605         if ((result != 0 || !(respcmd & 0x8000))) {
 606                 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
 607                        result, respcmd);
 608                 /*
 609                  * Handling errors here
 610                  */
 611                 switch (respcmd) {
 612                 case CMD_RET(CMD_GET_HW_SPEC):
 613                 case CMD_RET(CMD_802_11_RESET):
 614                         lbs_deb_host("CMD_RESP: reset failed\n");
 615                         break;
 616
 617                 }
 618                 lbs_complete_command(priv, priv->cur_cmd, result);
 619                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 620
 621                 ret = -1;
 622                 goto done;
 623         }
 624
 625         spin_unlock_irqrestore(&priv->driver_lock, flags);
 626
 627         if (priv->cur_cmd && priv->cur_cmd->callback) {
 628                 ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
 629                                 resp);
 630         } else
 631                 ret = handle_cmd_response(priv, 0, resp);
 632
 633         spin_lock_irqsave(&priv->driver_lock, flags);
 634
 635         if (priv->cur_cmd) {
 636                 /* Clean up and Put current command back to cmdfreeq */
 637                 lbs_complete_command(priv, priv->cur_cmd, result);
 638         }
 639         spin_unlock_irqrestore(&priv->driver_lock, flags);
 640
 641 done:
 642         mutex_unlock(&priv->lock);
 643         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 644         return ret;
 645 }
 646
 647 static int lbs_send_confirmwake(struct lbs_private *priv)
 648 {
 649         struct cmd_header *cmd = &priv->lbs_ps_confirm_wake;
 650         int ret = 0;
 651
 652         lbs_deb_enter(LBS_DEB_HOST);
 653
 654         cmd->command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
 655         cmd->size = cpu_to_le16(sizeof(*cmd));
 656         cmd->seqnum = cpu_to_le16(++priv->seqnum);
 657         cmd->result = 0;
 658
 659         lbs_deb_host("SEND_WAKEC_CMD: before download\n");
 660
 661         lbs_deb_hex(LBS_DEB_HOST, "wake confirm command", (void *)cmd, sizeof(*cmd));
 662
 663         ret = priv->hw_host_to_card(priv, MVMS_CMD, (void *)cmd, sizeof(*cmd));
 664         if (ret)
 665                 lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
 666
 667         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 668         return ret;
 669 }
 670
 671 int lbs_process_event(struct lbs_private *priv)
 672 {
 673         int ret = 0;
 674         u32 eventcause;
 675
 676         lbs_deb_enter(LBS_DEB_CMD);
 677
 678         spin_lock_irq(&priv->driver_lock);
 679         eventcause = priv->eventcause >> SBI_EVENT_CAUSE_SHIFT;
 680         spin_unlock_irq(&priv->driver_lock);
 681
 682         lbs_deb_cmd("event cause %d\n", eventcause);
 683
 684         switch (eventcause) {
 685         case MACREG_INT_CODE_LINK_SENSED:
 686                 lbs_deb_cmd("EVENT: MACREG_INT_CODE_LINK_SENSED\n");
 687                 break;
 688
 689         case MACREG_INT_CODE_DEAUTHENTICATED:
 690                 lbs_deb_cmd("EVENT: deauthenticated\n");
 691                 lbs_mac_event_disconnected(priv);
 692                 break;
 693
 694         case MACREG_INT_CODE_DISASSOCIATED:
 695                 lbs_deb_cmd("EVENT: disassociated\n");
 696                 lbs_mac_event_disconnected(priv);
 697                 break;
 698
 699         case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
 700                 lbs_deb_cmd("EVENT: link lost\n");
 701                 lbs_mac_event_disconnected(priv);
 702                 break;
 703
 704         case MACREG_INT_CODE_PS_SLEEP:
 705                 lbs_deb_cmd("EVENT: sleep\n");
 706
 707                 /* handle unexpected PS SLEEP event */
 708                 if (priv->psstate == PS_STATE_FULL_POWER) {
 709                         lbs_deb_cmd(
 710                                "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
 711                         break;
 712                 }
 713                 priv->psstate = PS_STATE_PRE_SLEEP;
 714
 715                 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
 716
 717                 break;
 718
 719         case MACREG_INT_CODE_HOST_AWAKE:
 720                 lbs_deb_cmd("EVENT: HOST_AWAKE\n");
 721                 lbs_send_confirmwake(priv);
 722                 break;
 723
 724         case MACREG_INT_CODE_PS_AWAKE:
 725                 lbs_deb_cmd("EVENT: awake\n");
 726                 /* handle unexpected PS AWAKE event */
 727                 if (priv->psstate == PS_STATE_FULL_POWER) {
 728                         lbs_deb_cmd(
 729                                "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
 730                         break;
 731                 }
 732
 733                 priv->psstate = PS_STATE_AWAKE;
 734
 735                 if (priv->needtowakeup) {
 736                         /*
 737                          * wait for the command processing to finish
 738                          * before resuming sending
 739                          * priv->needtowakeup will be set to FALSE
 740                          * in lbs_ps_wakeup()
 741                          */
 742                         lbs_deb_cmd("waking up ...\n");
 743                         lbs_ps_wakeup(priv, 0);
 744                 }
 745                 break;
 746
 747         case MACREG_INT_CODE_MIC_ERR_UNICAST:
 748                 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
 749                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
 750                 break;
 751
 752         case MACREG_INT_CODE_MIC_ERR_MULTICAST:
 753                 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
 754                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
 755                 break;
 756         case MACREG_INT_CODE_MIB_CHANGED:
 757         case MACREG_INT_CODE_INIT_DONE:
 758                 break;
 759
 760         case MACREG_INT_CODE_ADHOC_BCN_LOST:
 761                 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
 762                 break;
 763
 764         case MACREG_INT_CODE_RSSI_LOW:
 765                 lbs_pr_alert("EVENT: rssi low\n");
 766                 break;
 767         case MACREG_INT_CODE_SNR_LOW:
 768                 lbs_pr_alert("EVENT: snr low\n");
 769                 break;
 770         case MACREG_INT_CODE_MAX_FAIL:
 771                 lbs_pr_alert("EVENT: max fail\n");
 772                 break;
 773         case MACREG_INT_CODE_RSSI_HIGH:
 774                 lbs_pr_alert("EVENT: rssi high\n");
 775                 break;
 776         case MACREG_INT_CODE_SNR_HIGH:
 777                 lbs_pr_alert("EVENT: snr high\n");
 778                 break;
 779
 780         case MACREG_INT_CODE_MESH_AUTO_STARTED:
 781                 /* Ignore spurious autostart events if autostart is disabled */
 782                 if (!priv->mesh_autostart_enabled) {
 783                         lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
 784                         break;
 785                 }
 786                 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
 787                 priv->mesh_connect_status = LBS_CONNECTED;
 788                 if (priv->mesh_open) {
 789                         netif_carrier_on(priv->mesh_dev);
 790                         if (!priv->tx_pending_len)
 791                                 netif_wake_queue(priv->mesh_dev);
 792                 }
 793                 priv->mode = IW_MODE_ADHOC;
 794                 schedule_work(&priv->sync_channel);
 795                 break;
 796
 797         default:
 798                 lbs_pr_alert("EVENT: unknown event id %d\n", eventcause);
 799                 break;
 800         }
 801
 802         spin_lock_irq(&priv->driver_lock);
 803         priv->eventcause = 0;
 804         spin_unlock_irq(&priv->driver_lock);
 805
 806         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 807         return ret;
 808 }