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  66          * no longer valid.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_snmp_mib(struct lbs_private *priv,
 150                                     struct cmd_ds_command *resp)
 151 {
 152         struct cmd_ds_802_11_snmp_mib *smib = &resp->params.smib;
 153         u16 oid = le16_to_cpu(smib->oid);
 154         u16 querytype = le16_to_cpu(smib->querytype);
 155
 156         lbs_deb_enter(LBS_DEB_CMD);
 157
 158         lbs_deb_cmd("SNMP_RESP: oid 0x%x, querytype 0x%x\n", oid,
 159                querytype);
 160         lbs_deb_cmd("SNMP_RESP: Buf size %d\n", le16_to_cpu(smib->bufsize));
 161
 162         if (querytype == CMD_ACT_GET) {
 163                 switch (oid) {
 164                 case FRAGTHRESH_I:
 165                         priv->fragthsd =
 166                                 le16_to_cpu(*((__le16 *)(smib->value)));
 167                         lbs_deb_cmd("SNMP_RESP: frag threshold %u\n",
 168                                     priv->fragthsd);
 169                         break;
 170                 case RTSTHRESH_I:
 171                         priv->rtsthsd =
 172                                 le16_to_cpu(*((__le16 *)(smib->value)));
 173                         lbs_deb_cmd("SNMP_RESP: rts threshold %u\n",
 174                                     priv->rtsthsd);
 175                         break;
 176                 case SHORT_RETRYLIM_I:
 177                         priv->txretrycount =
 178                                 le16_to_cpu(*((__le16 *)(smib->value)));
 179                         lbs_deb_cmd("SNMP_RESP: tx retry count %u\n",
 180                                     priv->rtsthsd);
 181                         break;
 182                 default:
 183                         break;
 184                 }
 185         }
 186
 187         lbs_deb_enter(LBS_DEB_CMD);
 188         return 0;
 189 }
 190
 191 static int lbs_ret_802_11_mac_address(struct lbs_private *priv,
 192                                        struct cmd_ds_command *resp)
 193 {
 194         struct cmd_ds_802_11_mac_address *macadd = &resp->params.macadd;
 195
 196         lbs_deb_enter(LBS_DEB_CMD);
 197
 198         memcpy(priv->current_addr, macadd->macadd, ETH_ALEN);
 199
 200         lbs_deb_enter(LBS_DEB_CMD);
 201         return 0;
 202 }
 203
 204 static int lbs_ret_802_11_rf_tx_power(struct lbs_private *priv,
 205                                        struct cmd_ds_command *resp)
 206 {
 207         struct cmd_ds_802_11_rf_tx_power *rtp = &resp->params.txp;
 208
 209         lbs_deb_enter(LBS_DEB_CMD);
 210
 211         priv->txpowerlevel = le16_to_cpu(rtp->currentlevel);
 212
 213         lbs_deb_cmd("TX power currently %d\n", priv->txpowerlevel);
 214
 215         lbs_deb_leave(LBS_DEB_CMD);
 216         return 0;
 217 }
 218
 219 static int lbs_ret_802_11_rate_adapt_rateset(struct lbs_private *priv,
 220                                               struct cmd_ds_command *resp)
 221 {
 222         struct cmd_ds_802_11_rate_adapt_rateset *rates = &resp->params.rateset;
 223
 224         lbs_deb_enter(LBS_DEB_CMD);
 225
 226         if (rates->action == CMD_ACT_GET) {
 227                 priv->enablehwauto = le16_to_cpu(rates->enablehwauto);
 228                 priv->ratebitmap = le16_to_cpu(rates->bitmap);
 229         }
 230
 231         lbs_deb_leave(LBS_DEB_CMD);
 232         return 0;
 233 }
 234
 235 static int lbs_ret_802_11_rssi(struct lbs_private *priv,
 236                                 struct cmd_ds_command *resp)
 237 {
 238         struct cmd_ds_802_11_rssi_rsp *rssirsp = &resp->params.rssirsp;
 239
 240         lbs_deb_enter(LBS_DEB_CMD);
 241
 242         /* store the non average value */
 243         priv->SNR[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->SNR);
 244         priv->NF[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->noisefloor);
 245
 246         priv->SNR[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgSNR);
 247         priv->NF[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgnoisefloor);
 248
 249         priv->RSSI[TYPE_BEACON][TYPE_NOAVG] =
 250             CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_NOAVG],
 251                      priv->NF[TYPE_BEACON][TYPE_NOAVG]);
 252
 253         priv->RSSI[TYPE_BEACON][TYPE_AVG] =
 254             CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_AVG] / AVG_SCALE,
 255                      priv->NF[TYPE_BEACON][TYPE_AVG] / AVG_SCALE);
 256
 257         lbs_deb_cmd("RSSI: beacon %d, avg %d\n",
 258                priv->RSSI[TYPE_BEACON][TYPE_NOAVG],
 259                priv->RSSI[TYPE_BEACON][TYPE_AVG]);
 260
 261         lbs_deb_leave(LBS_DEB_CMD);
 262         return 0;
 263 }
 264
 265 static int lbs_ret_802_11_eeprom_access(struct lbs_private *priv,
 266                                   struct cmd_ds_command *resp)
 267 {
 268         struct lbs_ioctl_regrdwr *pbuf;
 269         pbuf = (struct lbs_ioctl_regrdwr *) priv->prdeeprom;
 270
 271         lbs_deb_enter_args(LBS_DEB_CMD, "len %d",
 272                le16_to_cpu(resp->params.rdeeprom.bytecount));
 273         if (pbuf->NOB < le16_to_cpu(resp->params.rdeeprom.bytecount)) {
 274                 pbuf->NOB = 0;
 275                 lbs_deb_cmd("EEPROM read length too big\n");
 276                 return -1;
 277         }
 278         pbuf->NOB = le16_to_cpu(resp->params.rdeeprom.bytecount);
 279         if (pbuf->NOB > 0) {
 280
 281                 memcpy(&pbuf->value, (u8 *) & resp->params.rdeeprom.value,
 282                        le16_to_cpu(resp->params.rdeeprom.bytecount));
 283                 lbs_deb_hex(LBS_DEB_CMD, "EEPROM", (char *)&pbuf->value,
 284                         le16_to_cpu(resp->params.rdeeprom.bytecount));
 285         }
 286         lbs_deb_leave(LBS_DEB_CMD);
 287         return 0;
 288 }
 289
 290 static int lbs_ret_802_11_bcn_ctrl(struct lbs_private * priv,
 291                                         struct cmd_ds_command *resp)
 292 {
 293         struct cmd_ds_802_11_beacon_control *bcn_ctrl =
 294             &resp->params.bcn_ctrl;
 295
 296         lbs_deb_enter(LBS_DEB_CMD);
 297
 298         if (bcn_ctrl->action == CMD_ACT_GET) {
 299                 priv->beacon_enable = (u8) le16_to_cpu(bcn_ctrl->beacon_enable);
 300                 priv->beacon_period = le16_to_cpu(bcn_ctrl->beacon_period);
 301         }
 302
 303         lbs_deb_enter(LBS_DEB_CMD);
 304         return 0;
 305 }
 306
 307 static inline int handle_cmd_response(struct lbs_private *priv,
 308                                       struct cmd_header *cmd_response)
 309 {
 310         struct cmd_ds_command *resp = (struct cmd_ds_command *) cmd_response;
 311         int ret = 0;
 312         unsigned long flags;
 313         uint16_t respcmd = le16_to_cpu(resp->command);
 314
 315         lbs_deb_enter(LBS_DEB_HOST);
 316
 317         switch (respcmd) {
 318         case CMD_RET(CMD_MAC_REG_ACCESS):
 319         case CMD_RET(CMD_BBP_REG_ACCESS):
 320         case CMD_RET(CMD_RF_REG_ACCESS):
 321                 ret = lbs_ret_reg_access(priv, respcmd, resp);
 322                 break;
 323
 324         case CMD_RET_802_11_ASSOCIATE:
 325         case CMD_RET(CMD_802_11_ASSOCIATE):
 326         case CMD_RET(CMD_802_11_REASSOCIATE):
 327                 ret = lbs_ret_80211_associate(priv, resp);
 328                 break;
 329
 330         case CMD_RET(CMD_802_11_DISASSOCIATE):
 331         case CMD_RET(CMD_802_11_DEAUTHENTICATE):
 332                 ret = lbs_ret_80211_disassociate(priv);
 333                 break;
 334
 335         case CMD_RET(CMD_802_11_AD_HOC_START):
 336         case CMD_RET(CMD_802_11_AD_HOC_JOIN):
 337                 ret = lbs_ret_80211_ad_hoc_start(priv, resp);
 338                 break;
 339
 340         case CMD_RET(CMD_802_11_SNMP_MIB):
 341                 ret = lbs_ret_802_11_snmp_mib(priv, resp);
 342                 break;
 343
 344         case CMD_RET(CMD_802_11_RF_TX_POWER):
 345                 ret = lbs_ret_802_11_rf_tx_power(priv, resp);
 346                 break;
 347
 348         case CMD_RET(CMD_802_11_SET_AFC):
 349         case CMD_RET(CMD_802_11_GET_AFC):
 350                 spin_lock_irqsave(&priv->driver_lock, flags);
 351                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
 352                         sizeof(struct cmd_ds_802_11_afc));
 353                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 354
 355                 break;
 356
 357         case CMD_RET(CMD_MAC_MULTICAST_ADR):
 358         case CMD_RET(CMD_802_11_RESET):
 359         case CMD_RET(CMD_802_11_AUTHENTICATE):
 360         case CMD_RET(CMD_802_11_BEACON_STOP):
 361                 break;
 362
 363         case CMD_RET(CMD_802_11_RATE_ADAPT_RATESET):
 364                 ret = lbs_ret_802_11_rate_adapt_rateset(priv, resp);
 365                 break;
 366
 367         case CMD_RET(CMD_802_11_RSSI):
 368                 ret = lbs_ret_802_11_rssi(priv, resp);
 369                 break;
 370
 371         case CMD_RET(CMD_802_11_MAC_ADDRESS):
 372                 ret = lbs_ret_802_11_mac_address(priv, resp);
 373                 break;
 374
 375         case CMD_RET(CMD_802_11_AD_HOC_STOP):
 376                 ret = lbs_ret_80211_ad_hoc_stop(priv);
 377                 break;
 378
 379         case CMD_RET(CMD_802_11_EEPROM_ACCESS):
 380                 ret = lbs_ret_802_11_eeprom_access(priv, resp);
 381                 break;
 382
 383         case CMD_RET(CMD_802_11D_DOMAIN_INFO):
 384                 ret = lbs_ret_802_11d_domain_info(resp);
 385                 break;
 386
 387         case CMD_RET(CMD_802_11_TPC_CFG):
 388                 spin_lock_irqsave(&priv->driver_lock, flags);
 389                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
 390                         sizeof(struct cmd_ds_802_11_tpc_cfg));
 391                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 392                 break;
 393         case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
 394                 spin_lock_irqsave(&priv->driver_lock, flags);
 395                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.ledgpio,
 396                         sizeof(struct cmd_ds_802_11_led_ctrl));
 397                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 398                 break;
 399
 400         case CMD_RET(CMD_GET_TSF):
 401                 spin_lock_irqsave(&priv->driver_lock, flags);
 402                 memcpy((void *)priv->cur_cmd->callback_arg,
 403                        &resp->params.gettsf.tsfvalue, sizeof(u64));
 404                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 405                 break;
 406         case CMD_RET(CMD_BT_ACCESS):
 407                 spin_lock_irqsave(&priv->driver_lock, flags);
 408                 if (priv->cur_cmd->callback_arg)
 409                         memcpy((void *)priv->cur_cmd->callback_arg,
 410                                &resp->params.bt.addr1, 2 * ETH_ALEN);
 411                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 412                 break;
 413         case CMD_RET(CMD_FWT_ACCESS):
 414                 spin_lock_irqsave(&priv->driver_lock, flags);
 415                 if (priv->cur_cmd->callback_arg)
 416                         memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
 417                                sizeof(resp->params.fwt));
 418                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 419                 break;
 420         case CMD_RET(CMD_802_11_BEACON_CTRL):
 421                 ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
 422                 break;
 423
 424         default:
 425                 lbs_deb_host("CMD_RESP: unknown cmd response 0x%04x\n",
 426                              le16_to_cpu(resp->command));
 427                 break;
 428         }
 429         lbs_deb_leave(LBS_DEB_HOST);
 430         return ret;
 431 }
 432
 433 int lbs_process_rx_command(struct lbs_private *priv)
 434 {
 435         uint16_t respcmd, curcmd;
 436         struct cmd_header *resp;
 437         int ret = 0;
 438         unsigned long flags;
 439         uint16_t result;
 440
 441         lbs_deb_enter(LBS_DEB_HOST);
 442
 443         mutex_lock(&priv->lock);
 444         spin_lock_irqsave(&priv->driver_lock, flags);
 445
 446         if (!priv->cur_cmd) {
 447                 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
 448                 ret = -1;
 449                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 450                 goto done;
 451         }
 452
 453         resp = (void *)priv->upld_buf;
 454         curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
 455         respcmd = le16_to_cpu(resp->command);
 456         result = le16_to_cpu(resp->result);
 457
 458         lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d, jiffies %lu\n",
 459                      respcmd, le16_to_cpu(resp->seqnum), priv->upld_len, jiffies);
 460         lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, priv->upld_len);
 461
 462         if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
 463                 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
 464                             le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
 465                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 466                 ret = -1;
 467                 goto done;
 468         }
 469         if (respcmd != CMD_RET(curcmd) &&
 470             respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
 471                 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
 472                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 473                 ret = -1;
 474                 goto done;
 475         }
 476
 477         if (resp->result == cpu_to_le16(0x0004)) {
 478                 /* 0x0004 means -EAGAIN. Drop the response, let it time out
 479                    and be resubmitted */
 480                 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
 481                             le16_to_cpu(resp->command));
 482                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 483                 ret = -1;
 484                 goto done;
 485         }
 486
 487         /* Now we got response from FW, cancel the command timer */
 488         del_timer(&priv->command_timer);
 489         priv->cmd_timed_out = 0;
 490         if (priv->nr_retries) {
 491                 lbs_pr_info("Received result %x to command %x after %d retries\n",
 492                             result, curcmd, priv->nr_retries);
 493                 priv->nr_retries = 0;
 494         }
 495
 496         /* Store the response code to cur_cmd_retcode. */
 497         priv->cur_cmd_retcode = result;
 498
 499         if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
 500                 struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
 501                 u16 action = le16_to_cpu(psmode->action);
 502
 503                 lbs_deb_host(
 504                        "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
 505                        result, action);
 506
 507                 if (result) {
 508                         lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
 509                                     result);
 510                         /*
 511                          * We should not re-try enter-ps command in
 512                          * ad-hoc mode. It takes place in
 513                          * lbs_execute_next_command().
 514                          */
 515                         if (priv->mode == IW_MODE_ADHOC &&
 516                             action == CMD_SUBCMD_ENTER_PS)
 517                                 priv->psmode = LBS802_11POWERMODECAM;
 518                 } else if (action == CMD_SUBCMD_ENTER_PS) {
 519                         priv->needtowakeup = 0;
 520                         priv->psstate = PS_STATE_AWAKE;
 521
 522                         lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
 523                         if (priv->connect_status != LBS_CONNECTED) {
 524                                 /*
 525                                  * When Deauth Event received before Enter_PS command
 526                                  * response, We need to wake up the firmware.
 527                                  */
 528                                 lbs_deb_host(
 529                                        "disconnected, invoking lbs_ps_wakeup\n");
 530
 531                                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 532                                 mutex_unlock(&priv->lock);
 533                                 lbs_ps_wakeup(priv, 0);
 534                                 mutex_lock(&priv->lock);
 535                                 spin_lock_irqsave(&priv->driver_lock, flags);
 536                         }
 537                 } else if (action == CMD_SUBCMD_EXIT_PS) {
 538                         priv->needtowakeup = 0;
 539                         priv->psstate = PS_STATE_FULL_POWER;
 540                         lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
 541                 } else {
 542                         lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
 543                 }
 544
 545                 lbs_complete_command(priv, priv->cur_cmd, result);
 546                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 547
 548                 ret = 0;
 549                 goto done;
 550         }
 551
 552         /* If the command is not successful, cleanup and return failure */
 553         if ((result != 0 || !(respcmd & 0x8000))) {
 554                 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
 555                        result, respcmd);
 556                 /*
 557                  * Handling errors here
 558                  */
 559                 switch (respcmd) {
 560                 case CMD_RET(CMD_GET_HW_SPEC):
 561                 case CMD_RET(CMD_802_11_RESET):
 562                         lbs_deb_host("CMD_RESP: reset failed\n");
 563                         break;
 564
 565                 }
 566                 lbs_complete_command(priv, priv->cur_cmd, result);
 567                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 568
 569                 ret = -1;
 570                 goto done;
 571         }
 572
 573         spin_unlock_irqrestore(&priv->driver_lock, flags);
 574
 575         if (priv->cur_cmd && priv->cur_cmd->callback) {
 576                 ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
 577                                 resp);
 578         } else
 579                 ret = handle_cmd_response(priv, resp);
 580
 581         spin_lock_irqsave(&priv->driver_lock, flags);
 582
 583         if (priv->cur_cmd) {
 584                 /* Clean up and Put current command back to cmdfreeq */
 585                 lbs_complete_command(priv, priv->cur_cmd, result);
 586         }
 587         spin_unlock_irqrestore(&priv->driver_lock, flags);
 588
 589 done:
 590         mutex_unlock(&priv->lock);
 591         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 592         return ret;
 593 }
 594
 595 static int lbs_send_confirmwake(struct lbs_private *priv)
 596 {
 597         struct cmd_header *cmd = &priv->lbs_ps_confirm_wake;
 598         int ret = 0;
 599
 600         lbs_deb_enter(LBS_DEB_HOST);
 601
 602         cmd->command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
 603         cmd->size = cpu_to_le16(sizeof(*cmd));
 604         cmd->seqnum = cpu_to_le16(++priv->seqnum);
 605         cmd->result = 0;
 606
 607         lbs_deb_host("SEND_WAKEC_CMD: before download\n");
 608
 609         lbs_deb_hex(LBS_DEB_HOST, "wake confirm command", (void *)cmd, sizeof(*cmd));
 610
 611         ret = priv->hw_host_to_card(priv, MVMS_CMD, (void *)cmd, sizeof(*cmd));
 612         if (ret)
 613                 lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
 614
 615         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 616         return ret;
 617 }
 618
 619 int lbs_process_event(struct lbs_private *priv)
 620 {
 621         int ret = 0;
 622         u32 eventcause;
 623
 624         lbs_deb_enter(LBS_DEB_CMD);
 625
 626         spin_lock_irq(&priv->driver_lock);
 627         eventcause = priv->eventcause >> SBI_EVENT_CAUSE_SHIFT;
 628         spin_unlock_irq(&priv->driver_lock);
 629
 630         switch (eventcause) {
 631         case MACREG_INT_CODE_LINK_SENSED:
 632                 lbs_deb_cmd("EVENT: link sensed\n");
 633                 break;
 634
 635         case MACREG_INT_CODE_DEAUTHENTICATED:
 636                 lbs_deb_cmd("EVENT: deauthenticated\n");
 637                 lbs_mac_event_disconnected(priv);
 638                 break;
 639
 640         case MACREG_INT_CODE_DISASSOCIATED:
 641                 lbs_deb_cmd("EVENT: disassociated\n");
 642                 lbs_mac_event_disconnected(priv);
 643                 break;
 644
 645         case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
 646                 lbs_deb_cmd("EVENT: link lost\n");
 647                 lbs_mac_event_disconnected(priv);
 648                 break;
 649
 650         case MACREG_INT_CODE_PS_SLEEP:
 651                 lbs_deb_cmd("EVENT: ps sleep\n");
 652
 653                 /* handle unexpected PS SLEEP event */
 654                 if (priv->psstate == PS_STATE_FULL_POWER) {
 655                         lbs_deb_cmd(
 656                                "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
 657                         break;
 658                 }
 659                 priv->psstate = PS_STATE_PRE_SLEEP;
 660
 661                 lbs_ps_confirm_sleep(priv);
 662
 663                 break;
 664
 665         case MACREG_INT_CODE_HOST_AWAKE:
 666                 lbs_deb_cmd("EVENT: host awake\n");
 667                 lbs_send_confirmwake(priv);
 668                 break;
 669
 670         case MACREG_INT_CODE_PS_AWAKE:
 671                 lbs_deb_cmd("EVENT: ps awake\n");
 672                 /* handle unexpected PS AWAKE event */
 673                 if (priv->psstate == PS_STATE_FULL_POWER) {
 674                         lbs_deb_cmd(
 675                                "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
 676                         break;
 677                 }
 678
 679                 priv->psstate = PS_STATE_AWAKE;
 680
 681                 if (priv->needtowakeup) {
 682                         /*
 683                          * wait for the command processing to finish
 684                          * before resuming sending
 685                          * priv->needtowakeup will be set to FALSE
 686                          * in lbs_ps_wakeup()
 687                          */
 688                         lbs_deb_cmd("waking up ...\n");
 689                         lbs_ps_wakeup(priv, 0);
 690                 }
 691                 break;
 692
 693         case MACREG_INT_CODE_MIC_ERR_UNICAST:
 694                 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
 695                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
 696                 break;
 697
 698         case MACREG_INT_CODE_MIC_ERR_MULTICAST:
 699                 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
 700                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
 701                 break;
 702
 703         case MACREG_INT_CODE_MIB_CHANGED:
 704                 lbs_deb_cmd("EVENT: MIB CHANGED\n");
 705                 break;
 706         case MACREG_INT_CODE_INIT_DONE:
 707                 lbs_deb_cmd("EVENT: INIT DONE\n");
 708                 break;
 709         case MACREG_INT_CODE_ADHOC_BCN_LOST:
 710                 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
 711                 break;
 712         case MACREG_INT_CODE_RSSI_LOW:
 713                 lbs_pr_alert("EVENT: rssi low\n");
 714                 break;
 715         case MACREG_INT_CODE_SNR_LOW:
 716                 lbs_pr_alert("EVENT: snr low\n");
 717                 break;
 718         case MACREG_INT_CODE_MAX_FAIL:
 719                 lbs_pr_alert("EVENT: max fail\n");
 720                 break;
 721         case MACREG_INT_CODE_RSSI_HIGH:
 722                 lbs_pr_alert("EVENT: rssi high\n");
 723                 break;
 724         case MACREG_INT_CODE_SNR_HIGH:
 725                 lbs_pr_alert("EVENT: snr high\n");
 726                 break;
 727
 728         case MACREG_INT_CODE_MESH_AUTO_STARTED:
 729                 /* Ignore spurious autostart events if autostart is disabled */
 730                 if (!priv->mesh_autostart_enabled) {
 731                         lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
 732                         break;
 733                 }
 734                 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
 735                 priv->mesh_connect_status = LBS_CONNECTED;
 736                 if (priv->mesh_open) {
 737                         netif_carrier_on(priv->mesh_dev);
 738                         if (!priv->tx_pending_len)
 739                                 netif_wake_queue(priv->mesh_dev);
 740                 }
 741                 priv->mode = IW_MODE_ADHOC;
 742                 schedule_work(&priv->sync_channel);
 743                 break;
 744
 745         default:
 746                 lbs_pr_alert("EVENT: unknown event id %d\n", eventcause);
 747                 break;
 748         }
 749
 750         spin_lock_irq(&priv->driver_lock);
 751         priv->eventcause = 0;
 752         spin_unlock_irq(&priv->driver_lock);
 753
 754         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 755         return ret;
 756 }