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  66          * no longer valid.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_GET_LOG):
 356                 ret = lbs_ret_get_log(priv, resp);
 357                 break;
 358
 359         case CMD_RET_802_11_ASSOCIATE:
 360         case CMD_RET(CMD_802_11_ASSOCIATE):
 361         case CMD_RET(CMD_802_11_REASSOCIATE):
 362                 ret = lbs_ret_80211_associate(priv, resp);
 363                 break;
 364
 365         case CMD_RET(CMD_802_11_DISASSOCIATE):
 366         case CMD_RET(CMD_802_11_DEAUTHENTICATE):
 367                 ret = lbs_ret_80211_disassociate(priv, resp);
 368                 break;
 369
 370         case CMD_RET(CMD_802_11_AD_HOC_START):
 371         case CMD_RET(CMD_802_11_AD_HOC_JOIN):
 372                 ret = lbs_ret_80211_ad_hoc_start(priv, resp);
 373                 break;
 374
 375         case CMD_RET(CMD_802_11_GET_STAT):
 376                 ret = lbs_ret_802_11_stat(priv, resp);
 377                 break;
 378
 379         case CMD_RET(CMD_802_11_SNMP_MIB):
 380                 ret = lbs_ret_802_11_snmp_mib(priv, resp);
 381                 break;
 382
 383         case CMD_RET(CMD_802_11_RF_TX_POWER):
 384                 ret = lbs_ret_802_11_rf_tx_power(priv, resp);
 385                 break;
 386
 387         case CMD_RET(CMD_802_11_SET_AFC):
 388         case CMD_RET(CMD_802_11_GET_AFC):
 389                 spin_lock_irqsave(&priv->driver_lock, flags);
 390                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
 391                         sizeof(struct cmd_ds_802_11_afc));
 392                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 393
 394                 break;
 395
 396         case CMD_RET(CMD_MAC_MULTICAST_ADR):
 397         case CMD_RET(CMD_802_11_RESET):
 398         case CMD_RET(CMD_802_11_AUTHENTICATE):
 399         case CMD_RET(CMD_802_11_BEACON_STOP):
 400                 break;
 401
 402         case CMD_RET(CMD_802_11_RATE_ADAPT_RATESET):
 403                 ret = lbs_ret_802_11_rate_adapt_rateset(priv, resp);
 404                 break;
 405
 406         case CMD_RET(CMD_802_11_RSSI):
 407                 ret = lbs_ret_802_11_rssi(priv, resp);
 408                 break;
 409
 410         case CMD_RET(CMD_802_11_MAC_ADDRESS):
 411                 ret = lbs_ret_802_11_mac_address(priv, resp);
 412                 break;
 413
 414         case CMD_RET(CMD_802_11_AD_HOC_STOP):
 415                 ret = lbs_ret_80211_ad_hoc_stop(priv, resp);
 416                 break;
 417
 418         case CMD_RET(CMD_802_11_EEPROM_ACCESS):
 419                 ret = lbs_ret_802_11_eeprom_access(priv, resp);
 420                 break;
 421
 422         case CMD_RET(CMD_802_11D_DOMAIN_INFO):
 423                 ret = lbs_ret_802_11d_domain_info(priv, resp);
 424                 break;
 425
 426         case CMD_RET(CMD_802_11_TPC_CFG):
 427                 spin_lock_irqsave(&priv->driver_lock, flags);
 428                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
 429                         sizeof(struct cmd_ds_802_11_tpc_cfg));
 430                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 431                 break;
 432         case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
 433                 spin_lock_irqsave(&priv->driver_lock, flags);
 434                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.ledgpio,
 435                         sizeof(struct cmd_ds_802_11_led_ctrl));
 436                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 437                 break;
 438
 439         case CMD_RET(CMD_802_11_PWR_CFG):
 440                 spin_lock_irqsave(&priv->driver_lock, flags);
 441                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.pwrcfg,
 442                         sizeof(struct cmd_ds_802_11_pwr_cfg));
 443                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 444
 445                 break;
 446
 447         case CMD_RET(CMD_GET_TSF):
 448                 spin_lock_irqsave(&priv->driver_lock, flags);
 449                 memcpy((void *)priv->cur_cmd->callback_arg,
 450                        &resp->params.gettsf.tsfvalue, sizeof(u64));
 451                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 452                 break;
 453         case CMD_RET(CMD_BT_ACCESS):
 454                 spin_lock_irqsave(&priv->driver_lock, flags);
 455                 if (priv->cur_cmd->callback_arg)
 456                         memcpy((void *)priv->cur_cmd->callback_arg,
 457                                &resp->params.bt.addr1, 2 * ETH_ALEN);
 458                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 459                 break;
 460         case CMD_RET(CMD_FWT_ACCESS):
 461                 spin_lock_irqsave(&priv->driver_lock, flags);
 462                 if (priv->cur_cmd->callback_arg)
 463                         memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
 464                                sizeof(resp->params.fwt));
 465                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 466                 break;
 467         case CMD_RET(CMD_802_11_BEACON_CTRL):
 468                 ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
 469                 break;
 470
 471         default:
 472                 lbs_deb_host("CMD_RESP: unknown cmd response 0x%04x\n",
 473                              le16_to_cpu(resp->command));
 474                 break;
 475         }
 476         lbs_deb_leave(LBS_DEB_HOST);
 477         return ret;
 478 }
 479
 480 int lbs_process_rx_command(struct lbs_private *priv)
 481 {
 482         uint16_t respcmd, curcmd;
 483         struct cmd_header *resp;
 484         int ret = 0;
 485         unsigned long flags;
 486         uint16_t result;
 487
 488         lbs_deb_enter(LBS_DEB_HOST);
 489
 490         mutex_lock(&priv->lock);
 491         spin_lock_irqsave(&priv->driver_lock, flags);
 492
 493         if (!priv->cur_cmd) {
 494                 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
 495                 ret = -1;
 496                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 497                 goto done;
 498         }
 499
 500         resp = (void *)priv->upld_buf;
 501         curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
 502         respcmd = le16_to_cpu(resp->command);
 503         result = le16_to_cpu(resp->result);
 504
 505         lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d, jiffies %lu\n",
 506                      respcmd, le16_to_cpu(resp->seqnum), priv->upld_len, jiffies);
 507         lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, priv->upld_len);
 508
 509         if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
 510                 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
 511                             le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
 512                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 513                 ret = -1;
 514                 goto done;
 515         }
 516         if (respcmd != CMD_RET(curcmd) &&
 517             respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
 518                 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
 519                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 520                 ret = -1;
 521                 goto done;
 522         }
 523
 524         if (resp->result == cpu_to_le16(0x0004)) {
 525                 /* 0x0004 means -EAGAIN. Drop the response, let it time out
 526                    and be resubmitted */
 527                 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
 528                             le16_to_cpu(resp->command));
 529                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 530                 ret = -1;
 531                 goto done;
 532         }
 533
 534         /* Now we got response from FW, cancel the command timer */
 535         del_timer(&priv->command_timer);
 536         priv->cmd_timed_out = 0;
 537         if (priv->nr_retries) {
 538                 lbs_pr_info("Received result %x to command %x after %d retries\n",
 539                             result, curcmd, priv->nr_retries);
 540                 priv->nr_retries = 0;
 541         }
 542
 543         /* Store the response code to cur_cmd_retcode. */
 544         priv->cur_cmd_retcode = result;
 545
 546         if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
 547                 struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
 548                 u16 action = le16_to_cpu(psmode->action);
 549
 550                 lbs_deb_host(
 551                        "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
 552                        result, action);
 553
 554                 if (result) {
 555                         lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
 556                                     result);
 557                         /*
 558                          * We should not re-try enter-ps command in
 559                          * ad-hoc mode. It takes place in
 560                          * lbs_execute_next_command().
 561                          */
 562                         if (priv->mode == IW_MODE_ADHOC &&
 563                             action == CMD_SUBCMD_ENTER_PS)
 564                                 priv->psmode = LBS802_11POWERMODECAM;
 565                 } else if (action == CMD_SUBCMD_ENTER_PS) {
 566                         priv->needtowakeup = 0;
 567                         priv->psstate = PS_STATE_AWAKE;
 568
 569                         lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
 570                         if (priv->connect_status != LBS_CONNECTED) {
 571                                 /*
 572                                  * When Deauth Event received before Enter_PS command
 573                                  * response, We need to wake up the firmware.
 574                                  */
 575                                 lbs_deb_host(
 576                                        "disconnected, invoking lbs_ps_wakeup\n");
 577
 578                                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 579                                 mutex_unlock(&priv->lock);
 580                                 lbs_ps_wakeup(priv, 0);
 581                                 mutex_lock(&priv->lock);
 582                                 spin_lock_irqsave(&priv->driver_lock, flags);
 583                         }
 584                 } else if (action == CMD_SUBCMD_EXIT_PS) {
 585                         priv->needtowakeup = 0;
 586                         priv->psstate = PS_STATE_FULL_POWER;
 587                         lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
 588                 } else {
 589                         lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
 590                 }
 591
 592                 lbs_complete_command(priv, priv->cur_cmd, result);
 593                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 594
 595                 ret = 0;
 596                 goto done;
 597         }
 598
 599         /* If the command is not successful, cleanup and return failure */
 600         if ((result != 0 || !(respcmd & 0x8000))) {
 601                 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
 602                        result, respcmd);
 603                 /*
 604                  * Handling errors here
 605                  */
 606                 switch (respcmd) {
 607                 case CMD_RET(CMD_GET_HW_SPEC):
 608                 case CMD_RET(CMD_802_11_RESET):
 609                         lbs_deb_host("CMD_RESP: reset failed\n");
 610                         break;
 611
 612                 }
 613                 lbs_complete_command(priv, priv->cur_cmd, result);
 614                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 615
 616                 ret = -1;
 617                 goto done;
 618         }
 619
 620         spin_unlock_irqrestore(&priv->driver_lock, flags);
 621
 622         if (priv->cur_cmd && priv->cur_cmd->callback) {
 623                 ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
 624                                 resp);
 625         } else
 626                 ret = handle_cmd_response(priv, 0, resp);
 627
 628         spin_lock_irqsave(&priv->driver_lock, flags);
 629
 630         if (priv->cur_cmd) {
 631                 /* Clean up and Put current command back to cmdfreeq */
 632                 lbs_complete_command(priv, priv->cur_cmd, result);
 633         }
 634         spin_unlock_irqrestore(&priv->driver_lock, flags);
 635
 636 done:
 637         mutex_unlock(&priv->lock);
 638         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 639         return ret;
 640 }
 641
 642 static int lbs_send_confirmwake(struct lbs_private *priv)
 643 {
 644         struct cmd_header *cmd = &priv->lbs_ps_confirm_wake;
 645         int ret = 0;
 646
 647         lbs_deb_enter(LBS_DEB_HOST);
 648
 649         cmd->command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
 650         cmd->size = cpu_to_le16(sizeof(*cmd));
 651         cmd->seqnum = cpu_to_le16(++priv->seqnum);
 652         cmd->result = 0;
 653
 654         lbs_deb_host("SEND_WAKEC_CMD: before download\n");
 655
 656         lbs_deb_hex(LBS_DEB_HOST, "wake confirm command", (void *)cmd, sizeof(*cmd));
 657
 658         ret = priv->hw_host_to_card(priv, MVMS_CMD, (void *)cmd, sizeof(*cmd));
 659         if (ret)
 660                 lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
 661
 662         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 663         return ret;
 664 }
 665
 666 int lbs_process_event(struct lbs_private *priv)
 667 {
 668         int ret = 0;
 669         u32 eventcause;
 670
 671         lbs_deb_enter(LBS_DEB_CMD);
 672
 673         spin_lock_irq(&priv->driver_lock);
 674         eventcause = priv->eventcause >> SBI_EVENT_CAUSE_SHIFT;
 675         spin_unlock_irq(&priv->driver_lock);
 676
 677         lbs_deb_cmd("event cause %d\n", eventcause);
 678
 679         switch (eventcause) {
 680         case MACREG_INT_CODE_LINK_SENSED:
 681                 lbs_deb_cmd("EVENT: MACREG_INT_CODE_LINK_SENSED\n");
 682                 break;
 683
 684         case MACREG_INT_CODE_DEAUTHENTICATED:
 685                 lbs_deb_cmd("EVENT: deauthenticated\n");
 686                 lbs_mac_event_disconnected(priv);
 687                 break;
 688
 689         case MACREG_INT_CODE_DISASSOCIATED:
 690                 lbs_deb_cmd("EVENT: disassociated\n");
 691                 lbs_mac_event_disconnected(priv);
 692                 break;
 693
 694         case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
 695                 lbs_deb_cmd("EVENT: link lost\n");
 696                 lbs_mac_event_disconnected(priv);
 697                 break;
 698
 699         case MACREG_INT_CODE_PS_SLEEP:
 700                 lbs_deb_cmd("EVENT: sleep\n");
 701
 702                 /* handle unexpected PS SLEEP event */
 703                 if (priv->psstate == PS_STATE_FULL_POWER) {
 704                         lbs_deb_cmd(
 705                                "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
 706                         break;
 707                 }
 708                 priv->psstate = PS_STATE_PRE_SLEEP;
 709
 710                 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
 711
 712                 break;
 713
 714         case MACREG_INT_CODE_HOST_AWAKE:
 715                 lbs_deb_cmd("EVENT: HOST_AWAKE\n");
 716                 lbs_send_confirmwake(priv);
 717                 break;
 718
 719         case MACREG_INT_CODE_PS_AWAKE:
 720                 lbs_deb_cmd("EVENT: awake\n");
 721                 /* handle unexpected PS AWAKE event */
 722                 if (priv->psstate == PS_STATE_FULL_POWER) {
 723                         lbs_deb_cmd(
 724                                "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
 725                         break;
 726                 }
 727
 728                 priv->psstate = PS_STATE_AWAKE;
 729
 730                 if (priv->needtowakeup) {
 731                         /*
 732                          * wait for the command processing to finish
 733                          * before resuming sending
 734                          * priv->needtowakeup will be set to FALSE
 735                          * in lbs_ps_wakeup()
 736                          */
 737                         lbs_deb_cmd("waking up ...\n");
 738                         lbs_ps_wakeup(priv, 0);
 739                 }
 740                 break;
 741
 742         case MACREG_INT_CODE_MIC_ERR_UNICAST:
 743                 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
 744                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
 745                 break;
 746
 747         case MACREG_INT_CODE_MIC_ERR_MULTICAST:
 748                 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
 749                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
 750                 break;
 751         case MACREG_INT_CODE_MIB_CHANGED:
 752         case MACREG_INT_CODE_INIT_DONE:
 753                 break;
 754
 755         case MACREG_INT_CODE_ADHOC_BCN_LOST:
 756                 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
 757                 break;
 758
 759         case MACREG_INT_CODE_RSSI_LOW:
 760                 lbs_pr_alert("EVENT: rssi low\n");
 761                 break;
 762         case MACREG_INT_CODE_SNR_LOW:
 763                 lbs_pr_alert("EVENT: snr low\n");
 764                 break;
 765         case MACREG_INT_CODE_MAX_FAIL:
 766                 lbs_pr_alert("EVENT: max fail\n");
 767                 break;
 768         case MACREG_INT_CODE_RSSI_HIGH:
 769                 lbs_pr_alert("EVENT: rssi high\n");
 770                 break;
 771         case MACREG_INT_CODE_SNR_HIGH:
 772                 lbs_pr_alert("EVENT: snr high\n");
 773                 break;
 774
 775         case MACREG_INT_CODE_MESH_AUTO_STARTED:
 776                 /* Ignore spurious autostart events if autostart is disabled */
 777                 if (!priv->mesh_autostart_enabled) {
 778                         lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
 779                         break;
 780                 }
 781                 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
 782                 priv->mesh_connect_status = LBS_CONNECTED;
 783                 if (priv->mesh_open) {
 784                         netif_carrier_on(priv->mesh_dev);
 785                         if (!priv->tx_pending_len)
 786                                 netif_wake_queue(priv->mesh_dev);
 787                 }
 788                 priv->mode = IW_MODE_ADHOC;
 789                 schedule_work(&priv->sync_channel);
 790                 break;
 791
 792         default:
 793                 lbs_pr_alert("EVENT: unknown event id %d\n", eventcause);
 794                 break;
 795         }
 796
 797         spin_lock_irq(&priv->driver_lock);
 798         priv->eventcause = 0;
 799         spin_unlock_irq(&priv->driver_lock);
 800
 801         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 802         return ret;
 803 }