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

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  66          * no longer valid.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