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  66          * no longer valid.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_CMD);
  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_key_material(struct lbs_private *priv,
 208                                         struct cmd_ds_command *resp)
 209 {
 210         struct cmd_ds_802_11_key_material *pkeymaterial =
 211             &resp->params.keymaterial;
 212         u16 action = le16_to_cpu(pkeymaterial->action);
 213
 214         lbs_deb_enter(LBS_DEB_CMD);
 215
 216         /* Copy the returned key to driver private data */
 217         if (action == CMD_ACT_GET) {
 218                 u8 * buf_ptr = (u8 *) &pkeymaterial->keyParamSet;
 219                 u8 * resp_end = (u8 *) (resp + le16_to_cpu(resp->size));
 220
 221                 while (buf_ptr < resp_end) {
 222                         struct MrvlIEtype_keyParamSet * pkeyparamset =
 223                             (struct MrvlIEtype_keyParamSet *) buf_ptr;
 224                         struct enc_key * pkey;
 225                         u16 param_set_len = le16_to_cpu(pkeyparamset->length);
 226                         u16 key_len = le16_to_cpu(pkeyparamset->keylen);
 227                         u16 key_flags = le16_to_cpu(pkeyparamset->keyinfo);
 228                         u16 key_type = le16_to_cpu(pkeyparamset->keytypeid);
 229                         u8 * end;
 230
 231                         end = (u8 *) pkeyparamset + sizeof (pkeyparamset->type)
 232                                                   + sizeof (pkeyparamset->length)
 233                                                   + param_set_len;
 234                         /* Make sure we don't access past the end of the IEs */
 235                         if (end > resp_end)
 236                                 break;
 237
 238                         if (key_flags & KEY_INFO_WPA_UNICAST)
 239                                 pkey = &priv->wpa_unicast_key;
 240                         else if (key_flags & KEY_INFO_WPA_MCAST)
 241                                 pkey = &priv->wpa_mcast_key;
 242                         else
 243                                 break;
 244
 245                         /* Copy returned key into driver */
 246                         memset(pkey, 0, sizeof(struct enc_key));
 247                         if (key_len > sizeof(pkey->key))
 248                                 break;
 249                         pkey->type = key_type;
 250                         pkey->flags = key_flags;
 251                         pkey->len = key_len;
 252                         memcpy(pkey->key, pkeyparamset->key, pkey->len);
 253
 254                         buf_ptr = end + 1;
 255                 }
 256         }
 257
 258         lbs_deb_enter(LBS_DEB_CMD);
 259         return 0;
 260 }
 261
 262 static int lbs_ret_802_11_mac_address(struct lbs_private *priv,
 263                                        struct cmd_ds_command *resp)
 264 {
 265         struct cmd_ds_802_11_mac_address *macadd = &resp->params.macadd;
 266
 267         lbs_deb_enter(LBS_DEB_CMD);
 268
 269         memcpy(priv->current_addr, macadd->macadd, ETH_ALEN);
 270
 271         lbs_deb_enter(LBS_DEB_CMD);
 272         return 0;
 273 }
 274
 275 static int lbs_ret_802_11_rf_tx_power(struct lbs_private *priv,
 276                                        struct cmd_ds_command *resp)
 277 {
 278         struct cmd_ds_802_11_rf_tx_power *rtp = &resp->params.txp;
 279
 280         lbs_deb_enter(LBS_DEB_CMD);
 281
 282         priv->txpowerlevel = le16_to_cpu(rtp->currentlevel);
 283
 284         lbs_deb_cmd("TX power currently %d\n", priv->txpowerlevel);
 285
 286         lbs_deb_leave(LBS_DEB_CMD);
 287         return 0;
 288 }
 289
 290 static int lbs_ret_802_11_rate_adapt_rateset(struct lbs_private *priv,
 291                                               struct cmd_ds_command *resp)
 292 {
 293         struct cmd_ds_802_11_rate_adapt_rateset *rates = &resp->params.rateset;
 294
 295         lbs_deb_enter(LBS_DEB_CMD);
 296
 297         if (rates->action == CMD_ACT_GET) {
 298                 priv->enablehwauto = le16_to_cpu(rates->enablehwauto);
 299                 priv->ratebitmap = le16_to_cpu(rates->bitmap);
 300         }
 301
 302         lbs_deb_leave(LBS_DEB_CMD);
 303         return 0;
 304 }
 305
 306 static int lbs_ret_802_11_rssi(struct lbs_private *priv,
 307                                 struct cmd_ds_command *resp)
 308 {
 309         struct cmd_ds_802_11_rssi_rsp *rssirsp = &resp->params.rssirsp;
 310
 311         lbs_deb_enter(LBS_DEB_CMD);
 312
 313         /* store the non average value */
 314         priv->SNR[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->SNR);
 315         priv->NF[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->noisefloor);
 316
 317         priv->SNR[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgSNR);
 318         priv->NF[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgnoisefloor);
 319
 320         priv->RSSI[TYPE_BEACON][TYPE_NOAVG] =
 321             CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_NOAVG],
 322                      priv->NF[TYPE_BEACON][TYPE_NOAVG]);
 323
 324         priv->RSSI[TYPE_BEACON][TYPE_AVG] =
 325             CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_AVG] / AVG_SCALE,
 326                      priv->NF[TYPE_BEACON][TYPE_AVG] / AVG_SCALE);
 327
 328         lbs_deb_cmd("RSSI: beacon %d, avg %d\n",
 329                priv->RSSI[TYPE_BEACON][TYPE_NOAVG],
 330                priv->RSSI[TYPE_BEACON][TYPE_AVG]);
 331
 332         lbs_deb_leave(LBS_DEB_CMD);
 333         return 0;
 334 }
 335
 336 static int lbs_ret_802_11_eeprom_access(struct lbs_private *priv,
 337                                   struct cmd_ds_command *resp)
 338 {
 339         struct lbs_ioctl_regrdwr *pbuf;
 340         pbuf = (struct lbs_ioctl_regrdwr *) priv->prdeeprom;
 341
 342         lbs_deb_enter_args(LBS_DEB_CMD, "len %d",
 343                le16_to_cpu(resp->params.rdeeprom.bytecount));
 344         if (pbuf->NOB < le16_to_cpu(resp->params.rdeeprom.bytecount)) {
 345                 pbuf->NOB = 0;
 346                 lbs_deb_cmd("EEPROM read length too big\n");
 347                 return -1;
 348         }
 349         pbuf->NOB = le16_to_cpu(resp->params.rdeeprom.bytecount);
 350         if (pbuf->NOB > 0) {
 351
 352                 memcpy(&pbuf->value, (u8 *) & resp->params.rdeeprom.value,
 353                        le16_to_cpu(resp->params.rdeeprom.bytecount));
 354                 lbs_deb_hex(LBS_DEB_CMD, "EEPROM", (char *)&pbuf->value,
 355                         le16_to_cpu(resp->params.rdeeprom.bytecount));
 356         }
 357         lbs_deb_leave(LBS_DEB_CMD);
 358         return 0;
 359 }
 360
 361 static int lbs_ret_get_log(struct lbs_private *priv,
 362                             struct cmd_ds_command *resp)
 363 {
 364         struct cmd_ds_802_11_get_log *logmessage = &resp->params.glog;
 365
 366         lbs_deb_enter(LBS_DEB_CMD);
 367
 368         /* Stored little-endian */
 369         memcpy(&priv->logmsg, logmessage, sizeof(struct cmd_ds_802_11_get_log));
 370
 371         lbs_deb_leave(LBS_DEB_CMD);
 372         return 0;
 373 }
 374
 375 static int lbs_ret_802_11_bcn_ctrl(struct lbs_private * priv,
 376                                         struct cmd_ds_command *resp)
 377 {
 378         struct cmd_ds_802_11_beacon_control *bcn_ctrl =
 379             &resp->params.bcn_ctrl;
 380
 381         lbs_deb_enter(LBS_DEB_CMD);
 382
 383         if (bcn_ctrl->action == CMD_ACT_GET) {
 384                 priv->beacon_enable = (u8) le16_to_cpu(bcn_ctrl->beacon_enable);
 385                 priv->beacon_period = le16_to_cpu(bcn_ctrl->beacon_period);
 386         }
 387
 388         lbs_deb_enter(LBS_DEB_CMD);
 389         return 0;
 390 }
 391
 392 static int lbs_ret_802_11_subscribe_event(struct lbs_private *priv,
 393         struct cmd_ds_command *resp)
 394 {
 395         struct cmd_ds_802_11_subscribe_event *cmd_event =
 396                 &resp->params.subscribe_event;
 397         struct cmd_ds_802_11_subscribe_event *dst_event =
 398                 (void *)priv->cur_cmd->callback_arg;
 399
 400         lbs_deb_enter(LBS_DEB_CMD);
 401
 402         if (dst_event->action == cpu_to_le16(CMD_ACT_GET)) {
 403                 dst_event->events = cmd_event->events;
 404                 memcpy(dst_event->tlv, cmd_event->tlv, sizeof(dst_event->tlv));
 405         }
 406
 407         lbs_deb_leave(LBS_DEB_CMD);
 408         return 0;
 409 }
 410
 411 static inline int handle_cmd_response(struct lbs_private *priv,
 412                                       unsigned long dummy,
 413                                       struct cmd_header *cmd_response)
 414 {
 415         struct cmd_ds_command *resp = (struct cmd_ds_command *) cmd_response;
 416         int ret = 0;
 417         unsigned long flags;
 418         uint16_t respcmd = le16_to_cpu(resp->command);
 419
 420         lbs_deb_enter(LBS_DEB_HOST);
 421
 422         switch (respcmd) {
 423         case CMD_RET(CMD_MAC_REG_ACCESS):
 424         case CMD_RET(CMD_BBP_REG_ACCESS):
 425         case CMD_RET(CMD_RF_REG_ACCESS):
 426                 ret = lbs_ret_reg_access(priv, respcmd, resp);
 427                 break;
 428
 429         case CMD_RET(CMD_802_11_SCAN):
 430                 ret = lbs_ret_80211_scan(priv, resp);
 431                 break;
 432
 433         case CMD_RET(CMD_802_11_GET_LOG):
 434                 ret = lbs_ret_get_log(priv, resp);
 435                 break;
 436
 437         case CMD_RET_802_11_ASSOCIATE:
 438         case CMD_RET(CMD_802_11_ASSOCIATE):
 439         case CMD_RET(CMD_802_11_REASSOCIATE):
 440                 ret = lbs_ret_80211_associate(priv, resp);
 441                 break;
 442
 443         case CMD_RET(CMD_802_11_DISASSOCIATE):
 444         case CMD_RET(CMD_802_11_DEAUTHENTICATE):
 445                 ret = lbs_ret_80211_disassociate(priv, resp);
 446                 break;
 447
 448         case CMD_RET(CMD_802_11_AD_HOC_START):
 449         case CMD_RET(CMD_802_11_AD_HOC_JOIN):
 450                 ret = lbs_ret_80211_ad_hoc_start(priv, resp);
 451                 break;
 452
 453         case CMD_RET(CMD_802_11_GET_STAT):
 454                 ret = lbs_ret_802_11_stat(priv, resp);
 455                 break;
 456
 457         case CMD_RET(CMD_802_11_SNMP_MIB):
 458                 ret = lbs_ret_802_11_snmp_mib(priv, resp);
 459                 break;
 460
 461         case CMD_RET(CMD_802_11_RF_TX_POWER):
 462                 ret = lbs_ret_802_11_rf_tx_power(priv, resp);
 463                 break;
 464
 465         case CMD_RET(CMD_802_11_SET_AFC):
 466         case CMD_RET(CMD_802_11_GET_AFC):
 467                 spin_lock_irqsave(&priv->driver_lock, flags);
 468                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
 469                         sizeof(struct cmd_ds_802_11_afc));
 470                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 471
 472                 break;
 473
 474         case CMD_RET(CMD_MAC_MULTICAST_ADR):
 475         case CMD_RET(CMD_MAC_CONTROL):
 476         case CMD_RET(CMD_802_11_RESET):
 477         case CMD_RET(CMD_802_11_AUTHENTICATE):
 478         case CMD_RET(CMD_802_11_BEACON_STOP):
 479                 break;
 480
 481         case CMD_RET(CMD_802_11_RATE_ADAPT_RATESET):
 482                 ret = lbs_ret_802_11_rate_adapt_rateset(priv, resp);
 483                 break;
 484
 485         case CMD_RET(CMD_802_11_RSSI):
 486                 ret = lbs_ret_802_11_rssi(priv, resp);
 487                 break;
 488
 489         case CMD_RET(CMD_802_11_MAC_ADDRESS):
 490                 ret = lbs_ret_802_11_mac_address(priv, resp);
 491                 break;
 492
 493         case CMD_RET(CMD_802_11_AD_HOC_STOP):
 494                 ret = lbs_ret_80211_ad_hoc_stop(priv, resp);
 495                 break;
 496
 497         case CMD_RET(CMD_802_11_KEY_MATERIAL):
 498                 ret = lbs_ret_802_11_key_material(priv, resp);
 499                 break;
 500
 501         case CMD_RET(CMD_802_11_EEPROM_ACCESS):
 502                 ret = lbs_ret_802_11_eeprom_access(priv, resp);
 503                 break;
 504
 505         case CMD_RET(CMD_802_11D_DOMAIN_INFO):
 506                 ret = lbs_ret_802_11d_domain_info(priv, resp);
 507                 break;
 508
 509         case CMD_RET(CMD_802_11_TPC_CFG):
 510                 spin_lock_irqsave(&priv->driver_lock, flags);
 511                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
 512                         sizeof(struct cmd_ds_802_11_tpc_cfg));
 513                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 514                 break;
 515         case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
 516                 spin_lock_irqsave(&priv->driver_lock, flags);
 517                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.ledgpio,
 518                         sizeof(struct cmd_ds_802_11_led_ctrl));
 519                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 520                 break;
 521         case CMD_RET(CMD_802_11_SUBSCRIBE_EVENT):
 522                 ret = lbs_ret_802_11_subscribe_event(priv, resp);
 523                 break;
 524
 525         case CMD_RET(CMD_802_11_PWR_CFG):
 526                 spin_lock_irqsave(&priv->driver_lock, flags);
 527                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.pwrcfg,
 528                         sizeof(struct cmd_ds_802_11_pwr_cfg));
 529                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 530
 531                 break;
 532
 533         case CMD_RET(CMD_GET_TSF):
 534                 spin_lock_irqsave(&priv->driver_lock, flags);
 535                 memcpy((void *)priv->cur_cmd->callback_arg,
 536                        &resp->params.gettsf.tsfvalue, sizeof(u64));
 537                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 538                 break;
 539         case CMD_RET(CMD_BT_ACCESS):
 540                 spin_lock_irqsave(&priv->driver_lock, flags);
 541                 if (priv->cur_cmd->callback_arg)
 542                         memcpy((void *)priv->cur_cmd->callback_arg,
 543                                &resp->params.bt.addr1, 2 * ETH_ALEN);
 544                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 545                 break;
 546         case CMD_RET(CMD_FWT_ACCESS):
 547                 spin_lock_irqsave(&priv->driver_lock, flags);
 548                 if (priv->cur_cmd->callback_arg)
 549                         memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
 550                                sizeof(resp->params.fwt));
 551                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 552                 break;
 553         case CMD_RET(CMD_802_11_BEACON_CTRL):
 554                 ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
 555                 break;
 556
 557         default:
 558                 lbs_deb_host("CMD_RESP: unknown cmd response 0x%04x\n",
 559                              le16_to_cpu(resp->command));
 560                 break;
 561         }
 562         lbs_deb_leave(LBS_DEB_HOST);
 563         return ret;
 564 }
 565
 566 int lbs_process_rx_command(struct lbs_private *priv)
 567 {
 568         uint16_t respcmd, curcmd;
 569         struct cmd_header *resp;
 570         int ret = 0;
 571         unsigned long flags;
 572         uint16_t result;
 573
 574         lbs_deb_enter(LBS_DEB_HOST);
 575
 576         mutex_lock(&priv->lock);
 577         spin_lock_irqsave(&priv->driver_lock, flags);
 578
 579         if (!priv->cur_cmd) {
 580                 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
 581                 ret = -1;
 582                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 583                 goto done;
 584         }
 585
 586         resp = (void *)priv->upld_buf;
 587
 588         curcmd = le16_to_cpu(resp->command);
 589
 590         respcmd = le16_to_cpu(resp->command);
 591         result = le16_to_cpu(resp->result);
 592
 593         lbs_deb_host("CMD_RESP: response 0x%04x, seq %d, size %d, jiffies %lu\n",
 594                      respcmd, le16_to_cpu(resp->seqnum), priv->upld_len, jiffies);
 595         lbs_deb_hex(LBS_DEB_HOST, "CMD_RESP", (void *) resp, priv->upld_len);
 596
 597         if (resp->seqnum != resp->seqnum) {
 598                 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
 599                             le16_to_cpu(resp->seqnum), le16_to_cpu(resp->seqnum));
 600                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 601                 ret = -1;
 602                 goto done;
 603         }
 604         if (respcmd != CMD_RET(curcmd) &&
 605             respcmd != CMD_802_11_ASSOCIATE && curcmd != CMD_RET_802_11_ASSOCIATE) {
 606                 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
 607                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 608                 ret = -1;
 609                 goto done;
 610         }
 611
 612         if (resp->result == cpu_to_le16(0x0004)) {
 613                 /* 0x0004 means -EAGAIN. Drop the response, let it time out
 614                    and be resubmitted */
 615                 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
 616                             le16_to_cpu(resp->command));
 617                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 618                 ret = -1;
 619                 goto done;
 620         }
 621
 622         /* Now we got response from FW, cancel the command timer */
 623         del_timer(&priv->command_timer);
 624         priv->cmd_timed_out = 0;
 625         if (priv->nr_retries) {
 626                 lbs_pr_info("Received result %x to command %x after %d retries\n",
 627                             result, curcmd, priv->nr_retries);
 628                 priv->nr_retries = 0;
 629         }
 630
 631         /* Store the response code to cur_cmd_retcode. */
 632         priv->cur_cmd_retcode = result;
 633
 634         if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
 635                 struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
 636                 u16 action = le16_to_cpu(psmode->action);
 637
 638                 lbs_deb_host(
 639                        "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
 640                        result, action);
 641
 642                 if (result) {
 643                         lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
 644                                     result);
 645                         /*
 646                          * We should not re-try enter-ps command in
 647                          * ad-hoc mode. It takes place in
 648                          * lbs_execute_next_command().
 649                          */
 650                         if (priv->mode == IW_MODE_ADHOC &&
 651                             action == CMD_SUBCMD_ENTER_PS)
 652                                 priv->psmode = LBS802_11POWERMODECAM;
 653                 } else if (action == CMD_SUBCMD_ENTER_PS) {
 654                         priv->needtowakeup = 0;
 655                         priv->psstate = PS_STATE_AWAKE;
 656
 657                         lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
 658                         if (priv->connect_status != LBS_CONNECTED) {
 659                                 /*
 660                                  * When Deauth Event received before Enter_PS command
 661                                  * response, We need to wake up the firmware.
 662                                  */
 663                                 lbs_deb_host(
 664                                        "disconnected, invoking lbs_ps_wakeup\n");
 665
 666                                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 667                                 mutex_unlock(&priv->lock);
 668                                 lbs_ps_wakeup(priv, 0);
 669                                 mutex_lock(&priv->lock);
 670                                 spin_lock_irqsave(&priv->driver_lock, flags);
 671                         }
 672                 } else if (action == CMD_SUBCMD_EXIT_PS) {
 673                         priv->needtowakeup = 0;
 674                         priv->psstate = PS_STATE_FULL_POWER;
 675                         lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
 676                 } else {
 677                         lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
 678                 }
 679
 680                 lbs_complete_command(priv, priv->cur_cmd, result);
 681                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 682
 683                 ret = 0;
 684                 goto done;
 685         }
 686
 687         /* If the command is not successful, cleanup and return failure */
 688         if ((result != 0 || !(respcmd & 0x8000))) {
 689                 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
 690                        result, respcmd);
 691                 /*
 692                  * Handling errors here
 693                  */
 694                 switch (respcmd) {
 695                 case CMD_RET(CMD_GET_HW_SPEC):
 696                 case CMD_RET(CMD_802_11_RESET):
 697                         lbs_deb_host("CMD_RESP: reset failed\n");
 698                         break;
 699
 700                 }
 701                 lbs_complete_command(priv, priv->cur_cmd, result);
 702                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 703
 704                 ret = -1;
 705                 goto done;
 706         }
 707
 708         spin_unlock_irqrestore(&priv->driver_lock, flags);
 709
 710         if (priv->cur_cmd && priv->cur_cmd->callback) {
 711                 ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
 712                                 resp);
 713         } else
 714                 ret = handle_cmd_response(priv, 0, resp);
 715
 716         spin_lock_irqsave(&priv->driver_lock, flags);
 717
 718         if (priv->cur_cmd) {
 719                 /* Clean up and Put current command back to cmdfreeq */
 720                 lbs_complete_command(priv, priv->cur_cmd, result);
 721         }
 722         spin_unlock_irqrestore(&priv->driver_lock, flags);
 723
 724 done:
 725         mutex_unlock(&priv->lock);
 726         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 727         return ret;
 728 }
 729
 730 static int lbs_send_confirmwake(struct lbs_private *priv)
 731 {
 732         struct cmd_header *cmd = &priv->lbs_ps_confirm_wake;
 733         int ret = 0;
 734
 735         lbs_deb_enter(LBS_DEB_HOST);
 736
 737         cmd->command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
 738         cmd->size = cpu_to_le16(sizeof(*cmd));
 739         cmd->seqnum = cpu_to_le16(++priv->seqnum);
 740         cmd->result = 0;
 741
 742         lbs_deb_host("SEND_WAKEC_CMD: before download\n");
 743
 744         lbs_deb_hex(LBS_DEB_HOST, "wake confirm command", (void *)cmd, sizeof(*cmd));
 745
 746         ret = priv->hw_host_to_card(priv, MVMS_CMD, (void *)cmd, sizeof(*cmd));
 747         if (ret)
 748                 lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
 749
 750         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 751         return ret;
 752 }
 753
 754 int lbs_process_event(struct lbs_private *priv)
 755 {
 756         int ret = 0;
 757         u32 eventcause;
 758
 759         lbs_deb_enter(LBS_DEB_CMD);
 760
 761         spin_lock_irq(&priv->driver_lock);
 762         eventcause = priv->eventcause >> SBI_EVENT_CAUSE_SHIFT;
 763         spin_unlock_irq(&priv->driver_lock);
 764
 765         lbs_deb_cmd("event cause %d\n", eventcause);
 766
 767         switch (eventcause) {
 768         case MACREG_INT_CODE_LINK_SENSED:
 769                 lbs_deb_cmd("EVENT: MACREG_INT_CODE_LINK_SENSED\n");
 770                 break;
 771
 772         case MACREG_INT_CODE_DEAUTHENTICATED:
 773                 lbs_deb_cmd("EVENT: deauthenticated\n");
 774                 lbs_mac_event_disconnected(priv);
 775                 break;
 776
 777         case MACREG_INT_CODE_DISASSOCIATED:
 778                 lbs_deb_cmd("EVENT: disassociated\n");
 779                 lbs_mac_event_disconnected(priv);
 780                 break;
 781
 782         case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
 783                 lbs_deb_cmd("EVENT: link lost\n");
 784                 lbs_mac_event_disconnected(priv);
 785                 break;
 786
 787         case MACREG_INT_CODE_PS_SLEEP:
 788                 lbs_deb_cmd("EVENT: sleep\n");
 789
 790                 /* handle unexpected PS SLEEP event */
 791                 if (priv->psstate == PS_STATE_FULL_POWER) {
 792                         lbs_deb_cmd(
 793                                "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
 794                         break;
 795                 }
 796                 priv->psstate = PS_STATE_PRE_SLEEP;
 797
 798                 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
 799
 800                 break;
 801
 802         case MACREG_INT_CODE_HOST_AWAKE:
 803                 lbs_deb_cmd("EVENT: HOST_AWAKE\n");
 804                 lbs_send_confirmwake(priv);
 805                 break;
 806
 807         case MACREG_INT_CODE_PS_AWAKE:
 808                 lbs_deb_cmd("EVENT: awake\n");
 809                 /* handle unexpected PS AWAKE event */
 810                 if (priv->psstate == PS_STATE_FULL_POWER) {
 811                         lbs_deb_cmd(
 812                                "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
 813                         break;
 814                 }
 815
 816                 priv->psstate = PS_STATE_AWAKE;
 817
 818                 if (priv->needtowakeup) {
 819                         /*
 820                          * wait for the command processing to finish
 821                          * before resuming sending
 822                          * priv->needtowakeup will be set to FALSE
 823                          * in lbs_ps_wakeup()
 824                          */
 825                         lbs_deb_cmd("waking up ...\n");
 826                         lbs_ps_wakeup(priv, 0);
 827                 }
 828                 break;
 829
 830         case MACREG_INT_CODE_MIC_ERR_UNICAST:
 831                 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
 832                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
 833                 break;
 834
 835         case MACREG_INT_CODE_MIC_ERR_MULTICAST:
 836                 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
 837                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
 838                 break;
 839         case MACREG_INT_CODE_MIB_CHANGED:
 840         case MACREG_INT_CODE_INIT_DONE:
 841                 break;
 842
 843         case MACREG_INT_CODE_ADHOC_BCN_LOST:
 844                 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
 845                 break;
 846
 847         case MACREG_INT_CODE_RSSI_LOW:
 848                 lbs_pr_alert("EVENT: rssi low\n");
 849                 break;
 850         case MACREG_INT_CODE_SNR_LOW:
 851                 lbs_pr_alert("EVENT: snr low\n");
 852                 break;
 853         case MACREG_INT_CODE_MAX_FAIL:
 854                 lbs_pr_alert("EVENT: max fail\n");
 855                 break;
 856         case MACREG_INT_CODE_RSSI_HIGH:
 857                 lbs_pr_alert("EVENT: rssi high\n");
 858                 break;
 859         case MACREG_INT_CODE_SNR_HIGH:
 860                 lbs_pr_alert("EVENT: snr high\n");
 861                 break;
 862
 863         case MACREG_INT_CODE_MESH_AUTO_STARTED:
 864                 /* Ignore spurious autostart events if autostart is disabled */
 865                 if (!priv->mesh_autostart_enabled) {
 866                         lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
 867                         break;
 868                 }
 869                 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
 870                 priv->mesh_connect_status = LBS_CONNECTED;
 871                 if (priv->mesh_open) {
 872                         netif_carrier_on(priv->mesh_dev);
 873                         if (!priv->tx_pending_len)
 874                                 netif_wake_queue(priv->mesh_dev);
 875                 }
 876                 priv->mode = IW_MODE_ADHOC;
 877                 schedule_work(&priv->sync_channel);
 878                 break;
 879
 880         default:
 881                 lbs_pr_alert("EVENT: unknown event id %d\n", eventcause);
 882                 break;
 883         }
 884
 885         spin_lock_irq(&priv->driver_lock);
 886         priv->eventcause = 0;
 887         spin_unlock_irq(&priv->driver_lock);
 888
 889         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 890         return ret;
 891 }