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  66          * no longer valid.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_MAC_CONTROL):
 398         case CMD_RET(CMD_802_11_RESET):
 399         case CMD_RET(CMD_802_11_AUTHENTICATE):
 400         case CMD_RET(CMD_802_11_BEACON_STOP):
 401                 break;
 402
 403         case CMD_RET(CMD_802_11_RATE_ADAPT_RATESET):
 404                 ret = lbs_ret_802_11_rate_adapt_rateset(priv, resp);
 405                 break;
 406
 407         case CMD_RET(CMD_802_11_RSSI):
 408                 ret = lbs_ret_802_11_rssi(priv, resp);
 409                 break;
 410
 411         case CMD_RET(CMD_802_11_MAC_ADDRESS):
 412                 ret = lbs_ret_802_11_mac_address(priv, resp);
 413                 break;
 414
 415         case CMD_RET(CMD_802_11_AD_HOC_STOP):
 416                 ret = lbs_ret_80211_ad_hoc_stop(priv, resp);
 417                 break;
 418
 419         case CMD_RET(CMD_802_11_EEPROM_ACCESS):
 420                 ret = lbs_ret_802_11_eeprom_access(priv, resp);
 421                 break;
 422
 423         case CMD_RET(CMD_802_11D_DOMAIN_INFO):
 424                 ret = lbs_ret_802_11d_domain_info(priv, resp);
 425                 break;
 426
 427         case CMD_RET(CMD_802_11_TPC_CFG):
 428                 spin_lock_irqsave(&priv->driver_lock, flags);
 429                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
 430                         sizeof(struct cmd_ds_802_11_tpc_cfg));
 431                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 432                 break;
 433         case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
 434                 spin_lock_irqsave(&priv->driver_lock, flags);
 435                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.ledgpio,
 436                         sizeof(struct cmd_ds_802_11_led_ctrl));
 437                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 438                 break;
 439
 440         case CMD_RET(CMD_802_11_PWR_CFG):
 441                 spin_lock_irqsave(&priv->driver_lock, flags);
 442                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.pwrcfg,
 443                         sizeof(struct cmd_ds_802_11_pwr_cfg));
 444                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 445
 446                 break;
 447
 448         case CMD_RET(CMD_GET_TSF):
 449                 spin_lock_irqsave(&priv->driver_lock, flags);
 450                 memcpy((void *)priv->cur_cmd->callback_arg,
 451                        &resp->params.gettsf.tsfvalue, sizeof(u64));
 452                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 453                 break;
 454         case CMD_RET(CMD_BT_ACCESS):
 455                 spin_lock_irqsave(&priv->driver_lock, flags);
 456                 if (priv->cur_cmd->callback_arg)
 457                         memcpy((void *)priv->cur_cmd->callback_arg,
 458                                &resp->params.bt.addr1, 2 * ETH_ALEN);
 459                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 460                 break;
 461         case CMD_RET(CMD_FWT_ACCESS):
 462                 spin_lock_irqsave(&priv->driver_lock, flags);
 463                 if (priv->cur_cmd->callback_arg)
 464                         memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
 465                                sizeof(resp->params.fwt));
 466                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 467                 break;
 468         case CMD_RET(CMD_802_11_BEACON_CTRL):
 469                 ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
 470                 break;
 471
 472         default:
 473                 lbs_deb_host("CMD_RESP: unknown cmd response 0x%04x\n",
 474                              le16_to_cpu(resp->command));
 475                 break;
 476         }
 477         lbs_deb_leave(LBS_DEB_HOST);
 478         return ret;
 479 }
 480
 481 int lbs_process_rx_command(struct lbs_private *priv)
 482 {
 483         uint16_t respcmd, curcmd;
 484         struct cmd_header *resp;
 485         int ret = 0;
 486         unsigned long flags;
 487         uint16_t result;
 488
 489         lbs_deb_enter(LBS_DEB_HOST);
 490
 491         mutex_lock(&priv->lock);
 492         spin_lock_irqsave(&priv->driver_lock, flags);
 493
 494         if (!priv->cur_cmd) {
 495                 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
 496                 ret = -1;
 497                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 498                 goto done;
 499         }
 500
 501         resp = (void *)priv->upld_buf;
 502         curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
 503         respcmd = le16_to_cpu(resp->command);
 504         result = le16_to_cpu(resp->result);
 505
 506         lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d, jiffies %lu\n",
 507                      respcmd, le16_to_cpu(resp->seqnum), priv->upld_len, jiffies);
 508         lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, priv->upld_len);
 509
 510         if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
 511                 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
 512                             le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
 513                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 514                 ret = -1;
 515                 goto done;
 516         }
 517         if (respcmd != CMD_RET(curcmd) &&
 518             respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
 519                 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
 520                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 521                 ret = -1;
 522                 goto done;
 523         }
 524
 525         if (resp->result == cpu_to_le16(0x0004)) {
 526                 /* 0x0004 means -EAGAIN. Drop the response, let it time out
 527                    and be resubmitted */
 528                 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
 529                             le16_to_cpu(resp->command));
 530                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 531                 ret = -1;
 532                 goto done;
 533         }
 534
 535         /* Now we got response from FW, cancel the command timer */
 536         del_timer(&priv->command_timer);
 537         priv->cmd_timed_out = 0;
 538         if (priv->nr_retries) {
 539                 lbs_pr_info("Received result %x to command %x after %d retries\n",
 540                             result, curcmd, priv->nr_retries);
 541                 priv->nr_retries = 0;
 542         }
 543
 544         /* Store the response code to cur_cmd_retcode. */
 545         priv->cur_cmd_retcode = result;
 546
 547         if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
 548                 struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
 549                 u16 action = le16_to_cpu(psmode->action);
 550
 551                 lbs_deb_host(
 552                        "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
 553                        result, action);
 554
 555                 if (result) {
 556                         lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
 557                                     result);
 558                         /*
 559                          * We should not re-try enter-ps command in
 560                          * ad-hoc mode. It takes place in
 561                          * lbs_execute_next_command().
 562                          */
 563                         if (priv->mode == IW_MODE_ADHOC &&
 564                             action == CMD_SUBCMD_ENTER_PS)
 565                                 priv->psmode = LBS802_11POWERMODECAM;
 566                 } else if (action == CMD_SUBCMD_ENTER_PS) {
 567                         priv->needtowakeup = 0;
 568                         priv->psstate = PS_STATE_AWAKE;
 569
 570                         lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
 571                         if (priv->connect_status != LBS_CONNECTED) {
 572                                 /*
 573                                  * When Deauth Event received before Enter_PS command
 574                                  * response, We need to wake up the firmware.
 575                                  */
 576                                 lbs_deb_host(
 577                                        "disconnected, invoking lbs_ps_wakeup\n");
 578
 579                                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 580                                 mutex_unlock(&priv->lock);
 581                                 lbs_ps_wakeup(priv, 0);
 582                                 mutex_lock(&priv->lock);
 583                                 spin_lock_irqsave(&priv->driver_lock, flags);
 584                         }
 585                 } else if (action == CMD_SUBCMD_EXIT_PS) {
 586                         priv->needtowakeup = 0;
 587                         priv->psstate = PS_STATE_FULL_POWER;
 588                         lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
 589                 } else {
 590                         lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
 591                 }
 592
 593                 lbs_complete_command(priv, priv->cur_cmd, result);
 594                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 595
 596                 ret = 0;
 597                 goto done;
 598         }
 599
 600         /* If the command is not successful, cleanup and return failure */
 601         if ((result != 0 || !(respcmd & 0x8000))) {
 602                 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
 603                        result, respcmd);
 604                 /*
 605                  * Handling errors here
 606                  */
 607                 switch (respcmd) {
 608                 case CMD_RET(CMD_GET_HW_SPEC):
 609                 case CMD_RET(CMD_802_11_RESET):
 610                         lbs_deb_host("CMD_RESP: reset failed\n");
 611                         break;
 612
 613                 }
 614                 lbs_complete_command(priv, priv->cur_cmd, result);
 615                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 616
 617                 ret = -1;
 618                 goto done;
 619         }
 620
 621         spin_unlock_irqrestore(&priv->driver_lock, flags);
 622
 623         if (priv->cur_cmd && priv->cur_cmd->callback) {
 624                 ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
 625                                 resp);
 626         } else
 627                 ret = handle_cmd_response(priv, 0, resp);
 628
 629         spin_lock_irqsave(&priv->driver_lock, flags);
 630
 631         if (priv->cur_cmd) {
 632                 /* Clean up and Put current command back to cmdfreeq */
 633                 lbs_complete_command(priv, priv->cur_cmd, result);
 634         }
 635         spin_unlock_irqrestore(&priv->driver_lock, flags);
 636
 637 done:
 638         mutex_unlock(&priv->lock);
 639         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 640         return ret;
 641 }
 642
 643 static int lbs_send_confirmwake(struct lbs_private *priv)
 644 {
 645         struct cmd_header *cmd = &priv->lbs_ps_confirm_wake;
 646         int ret = 0;
 647
 648         lbs_deb_enter(LBS_DEB_HOST);
 649
 650         cmd->command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
 651         cmd->size = cpu_to_le16(sizeof(*cmd));
 652         cmd->seqnum = cpu_to_le16(++priv->seqnum);
 653         cmd->result = 0;
 654
 655         lbs_deb_host("SEND_WAKEC_CMD: before download\n");
 656
 657         lbs_deb_hex(LBS_DEB_HOST, "wake confirm command", (void *)cmd, sizeof(*cmd));
 658
 659         ret = priv->hw_host_to_card(priv, MVMS_CMD, (void *)cmd, sizeof(*cmd));
 660         if (ret)
 661                 lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
 662
 663         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 664         return ret;
 665 }
 666
 667 int lbs_process_event(struct lbs_private *priv)
 668 {
 669         int ret = 0;
 670         u32 eventcause;
 671
 672         lbs_deb_enter(LBS_DEB_CMD);
 673
 674         spin_lock_irq(&priv->driver_lock);
 675         eventcause = priv->eventcause >> SBI_EVENT_CAUSE_SHIFT;
 676         spin_unlock_irq(&priv->driver_lock);
 677
 678         lbs_deb_cmd("event cause %d\n", eventcause);
 679
 680         switch (eventcause) {
 681         case MACREG_INT_CODE_LINK_SENSED:
 682                 lbs_deb_cmd("EVENT: MACREG_INT_CODE_LINK_SENSED\n");
 683                 break;
 684
 685         case MACREG_INT_CODE_DEAUTHENTICATED:
 686                 lbs_deb_cmd("EVENT: deauthenticated\n");
 687                 lbs_mac_event_disconnected(priv);
 688                 break;
 689
 690         case MACREG_INT_CODE_DISASSOCIATED:
 691                 lbs_deb_cmd("EVENT: disassociated\n");
 692                 lbs_mac_event_disconnected(priv);
 693                 break;
 694
 695         case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
 696                 lbs_deb_cmd("EVENT: link lost\n");
 697                 lbs_mac_event_disconnected(priv);
 698                 break;
 699
 700         case MACREG_INT_CODE_PS_SLEEP:
 701                 lbs_deb_cmd("EVENT: sleep\n");
 702
 703                 /* handle unexpected PS SLEEP event */
 704                 if (priv->psstate == PS_STATE_FULL_POWER) {
 705                         lbs_deb_cmd(
 706                                "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
 707                         break;
 708                 }
 709                 priv->psstate = PS_STATE_PRE_SLEEP;
 710
 711                 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
 712
 713                 break;
 714
 715         case MACREG_INT_CODE_HOST_AWAKE:
 716                 lbs_deb_cmd("EVENT: HOST_AWAKE\n");
 717                 lbs_send_confirmwake(priv);
 718                 break;
 719
 720         case MACREG_INT_CODE_PS_AWAKE:
 721                 lbs_deb_cmd("EVENT: awake\n");
 722                 /* handle unexpected PS AWAKE event */
 723                 if (priv->psstate == PS_STATE_FULL_POWER) {
 724                         lbs_deb_cmd(
 725                                "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
 726                         break;
 727                 }
 728
 729                 priv->psstate = PS_STATE_AWAKE;
 730
 731                 if (priv->needtowakeup) {
 732                         /*
 733                          * wait for the command processing to finish
 734                          * before resuming sending
 735                          * priv->needtowakeup will be set to FALSE
 736                          * in lbs_ps_wakeup()
 737                          */
 738                         lbs_deb_cmd("waking up ...\n");
 739                         lbs_ps_wakeup(priv, 0);
 740                 }
 741                 break;
 742
 743         case MACREG_INT_CODE_MIC_ERR_UNICAST:
 744                 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
 745                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
 746                 break;
 747
 748         case MACREG_INT_CODE_MIC_ERR_MULTICAST:
 749                 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
 750                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
 751                 break;
 752         case MACREG_INT_CODE_MIB_CHANGED:
 753         case MACREG_INT_CODE_INIT_DONE:
 754                 break;
 755
 756         case MACREG_INT_CODE_ADHOC_BCN_LOST:
 757                 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
 758                 break;
 759
 760         case MACREG_INT_CODE_RSSI_LOW:
 761                 lbs_pr_alert("EVENT: rssi low\n");
 762                 break;
 763         case MACREG_INT_CODE_SNR_LOW:
 764                 lbs_pr_alert("EVENT: snr low\n");
 765                 break;
 766         case MACREG_INT_CODE_MAX_FAIL:
 767                 lbs_pr_alert("EVENT: max fail\n");
 768                 break;
 769         case MACREG_INT_CODE_RSSI_HIGH:
 770                 lbs_pr_alert("EVENT: rssi high\n");
 771                 break;
 772         case MACREG_INT_CODE_SNR_HIGH:
 773                 lbs_pr_alert("EVENT: snr high\n");
 774                 break;
 775
 776         case MACREG_INT_CODE_MESH_AUTO_STARTED:
 777                 /* Ignore spurious autostart events if autostart is disabled */
 778                 if (!priv->mesh_autostart_enabled) {
 779                         lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
 780                         break;
 781                 }
 782                 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
 783                 priv->mesh_connect_status = LBS_CONNECTED;
 784                 if (priv->mesh_open) {
 785                         netif_carrier_on(priv->mesh_dev);
 786                         if (!priv->tx_pending_len)
 787                                 netif_wake_queue(priv->mesh_dev);
 788                 }
 789                 priv->mode = IW_MODE_ADHOC;
 790                 schedule_work(&priv->sync_channel);
 791                 break;
 792
 793         default:
 794                 lbs_pr_alert("EVENT: unknown event id %d\n", eventcause);
 795                 break;
 796         }
 797
 798         spin_lock_irq(&priv->driver_lock);
 799         priv->eventcause = 0;
 800         spin_unlock_irq(&priv->driver_lock);
 801
 802         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 803         return ret;
 804 }