SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/libertas/cmd.c

   1 /**
   2   * This file contains the handling of command.
   3   * It prepares command and sends it to firmware when it is ready.
   4   */
   5
   6 #include <net/iw_handler.h>
   7 #include <net/lib80211.h>
   8 #include <linux/kfifo.h>
   9 #include "host.h"
  10 #include "decl.h"
  11 #include "defs.h"
  12 #include "dev.h"
  13 #include "assoc.h"
  14 #include "wext.h"
  15 #include "scan.h"
  16 #include "cmd.h"
  17
  18 static struct cmd_ctrl_node *lbs_get_cmd_ctrl_node(struct lbs_private *priv);
  19
  20 /**
  21  *  @brief Simple callback that copies response back into command
  22  *
  23  *  @param priv         A pointer to struct lbs_private structure
  24  *  @param extra        A pointer to the original command structure for which
  25  *                      'resp' is a response
  26  *  @param resp         A pointer to the command response
  27  *
  28  *  @return             0 on success, error on failure
  29  */
  30 int lbs_cmd_copyback(struct lbs_private *priv, unsigned long extra,
  31                      struct cmd_header *resp)
  32 {
  33         struct cmd_header *buf = (void *)extra;
  34         uint16_t copy_len;
  35
  36         copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size));
  37         memcpy(buf, resp, copy_len);
  38         return 0;
  39 }
  40 EXPORT_SYMBOL_GPL(lbs_cmd_copyback);
  41
  42 /**
  43  *  @brief Simple callback that ignores the result. Use this if
  44  *  you just want to send a command to the hardware, but don't
  45  *  care for the result.
  46  *
  47  *  @param priv         ignored
  48  *  @param extra        ignored
  49  *  @param resp         ignored
  50  *
  51  *  @return             0 for success
  52  */
  53 static int lbs_cmd_async_callback(struct lbs_private *priv, unsigned long extra,
  54                      struct cmd_header *resp)
  55 {
  56         return 0;
  57 }
  58
  59
  60 /**
  61  *  @brief Checks whether a command is allowed in Power Save mode
  62  *
  63  *  @param command the command ID
  64  *  @return        1 if allowed, 0 if not allowed
  65  */
  66 static u8 is_command_allowed_in_ps(u16 cmd)
  67 {
  68         switch (cmd) {
  69         case CMD_802_11_RSSI:
  70                 return 1;
  71         default:
  72                 break;
  73         }
  74         return 0;
  75 }
  76
  77 /**
  78  *  @brief This function checks if the command is allowed.
  79  *
  80  *  @param priv         A pointer to lbs_private structure
  81  *  @return             allowed or not allowed.
  82  */
  83
  84 static int lbs_is_cmd_allowed(struct lbs_private *priv)
  85 {
  86         int ret = 1;
  87
  88         lbs_deb_enter(LBS_DEB_CMD);
  89
  90         if (!priv->is_auto_deep_sleep_enabled) {
  91                 if (priv->is_deep_sleep) {
  92                         lbs_deb_cmd("command not allowed in deep sleep\n");
  93                         ret = 0;
  94                 }
  95         }
  96
  97         lbs_deb_leave(LBS_DEB_CMD);
  98         return ret;
  99 }
 100
 101 /**
 102  *  @brief Updates the hardware details like MAC address and regulatory region
 103  *
 104  *  @param priv         A pointer to struct lbs_private structure
 105  *
 106  *  @return             0 on success, error on failure
 107  */
 108 int lbs_update_hw_spec(struct lbs_private *priv)
 109 {
 110         struct cmd_ds_get_hw_spec cmd;
 111         int ret = -1;
 112         u32 i;
 113
 114         lbs_deb_enter(LBS_DEB_CMD);
 115
 116         memset(&cmd, 0, sizeof(cmd));
 117         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 118         memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN);
 119         ret = lbs_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd);
 120         if (ret)
 121                 goto out;
 122
 123         priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo);
 124
 125         /* The firmware release is in an interesting format: the patch
 126          * level is in the most significant nibble ... so fix that: */
 127         priv->fwrelease = le32_to_cpu(cmd.fwrelease);
 128         priv->fwrelease = (priv->fwrelease << 8) |
 129                 (priv->fwrelease >> 24 & 0xff);
 130
 131         /* Some firmware capabilities:
 132          * CF card    firmware 5.0.16p0:   cap 0x00000303
 133          * USB dongle firmware 5.110.17p2: cap 0x00000303
 134          */
 135         lbs_pr_info("%pM, fw %u.%u.%up%u, cap 0x%08x\n",
 136                 cmd.permanentaddr,
 137                 priv->fwrelease >> 24 & 0xff,
 138                 priv->fwrelease >> 16 & 0xff,
 139                 priv->fwrelease >>  8 & 0xff,
 140                 priv->fwrelease       & 0xff,
 141                 priv->fwcapinfo);
 142         lbs_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n",
 143                     cmd.hwifversion, cmd.version);
 144
 145         /* Determine mesh_fw_ver from fwrelease and fwcapinfo */
 146         /* 5.0.16p0 9.0.0.p0 is known to NOT support any mesh */
 147         /* 5.110.22 have mesh command with 0xa3 command id */
 148         /* 10.0.0.p0 FW brings in mesh config command with different id */
 149         /* Check FW version MSB and initialize mesh_fw_ver */
 150         if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V5)
 151                 priv->mesh_fw_ver = MESH_FW_OLD;
 152         else if ((MRVL_FW_MAJOR_REV(priv->fwrelease) >= MRVL_FW_V10) &&
 153                 (priv->fwcapinfo & MESH_CAPINFO_ENABLE_MASK))
 154                 priv->mesh_fw_ver = MESH_FW_NEW;
 155         else
 156                 priv->mesh_fw_ver = MESH_NONE;
 157
 158         /* Clamp region code to 8-bit since FW spec indicates that it should
 159          * only ever be 8-bit, even though the field size is 16-bit.  Some firmware
 160          * returns non-zero high 8 bits here.
 161          *
 162          * Firmware version 4.0.102 used in CF8381 has region code shifted.  We
 163          * need to check for this problem and handle it properly.
 164          */
 165         if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V4)
 166                 priv->regioncode = (le16_to_cpu(cmd.regioncode) >> 8) & 0xFF;
 167         else
 168                 priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF;
 169
 170         for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) {
 171                 /* use the region code to search for the index */
 172                 if (priv->regioncode == lbs_region_code_to_index[i])
 173                         break;
 174         }
 175
 176         /* if it's unidentified region code, use the default (USA) */
 177         if (i >= MRVDRV_MAX_REGION_CODE) {
 178                 priv->regioncode = 0x10;
 179                 lbs_pr_info("unidentified region code; using the default (USA)\n");
 180         }
 181
 182         if (priv->current_addr[0] == 0xff)
 183                 memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN);
 184
 185         memcpy(priv->dev->dev_addr, priv->current_addr, ETH_ALEN);
 186         if (priv->mesh_dev)
 187                 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
 188
 189         if (lbs_set_regiontable(priv, priv->regioncode, 0)) {
 190                 ret = -1;
 191                 goto out;
 192         }
 193
 194 out:
 195         lbs_deb_leave(LBS_DEB_CMD);
 196         return ret;
 197 }
 198
 199 int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria,
 200                 struct wol_config *p_wol_config)
 201 {
 202         struct cmd_ds_host_sleep cmd_config;
 203         int ret;
 204
 205         cmd_config.hdr.size = cpu_to_le16(sizeof(cmd_config));
 206         cmd_config.criteria = cpu_to_le32(criteria);
 207         cmd_config.gpio = priv->wol_gpio;
 208         cmd_config.gap = priv->wol_gap;
 209
 210         if (p_wol_config != NULL)
 211                 memcpy((uint8_t *)&cmd_config.wol_conf, (uint8_t *)p_wol_config,
 212                                 sizeof(struct wol_config));
 213         else
 214                 cmd_config.wol_conf.action = CMD_ACT_ACTION_NONE;
 215
 216         ret = lbs_cmd_with_response(priv, CMD_802_11_HOST_SLEEP_CFG, &cmd_config);
 217         if (!ret) {
 218                 if (criteria) {
 219                         lbs_deb_cmd("Set WOL criteria to %x\n", criteria);
 220                         priv->wol_criteria = criteria;
 221                 } else
 222                         memcpy((uint8_t *) p_wol_config,
 223                                         (uint8_t *)&cmd_config.wol_conf,
 224                                         sizeof(struct wol_config));
 225         } else {
 226                 lbs_pr_info("HOST_SLEEP_CFG failed %d\n", ret);
 227         }
 228
 229         return ret;
 230 }
 231 EXPORT_SYMBOL_GPL(lbs_host_sleep_cfg);
 232
 233 static int lbs_cmd_802_11_ps_mode(struct cmd_ds_command *cmd,
 234                                    u16 cmd_action)
 235 {
 236         struct cmd_ds_802_11_ps_mode *psm = &cmd->params.psmode;
 237
 238         lbs_deb_enter(LBS_DEB_CMD);
 239
 240         cmd->command = cpu_to_le16(CMD_802_11_PS_MODE);
 241         cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_ps_mode) +
 242                                 S_DS_GEN);
 243         psm->action = cpu_to_le16(cmd_action);
 244         psm->multipledtim = 0;
 245         switch (cmd_action) {
 246         case CMD_SUBCMD_ENTER_PS:
 247                 lbs_deb_cmd("PS command:" "SubCode- Enter PS\n");
 248
 249                 psm->locallisteninterval = 0;
 250                 psm->nullpktinterval = 0;
 251                 psm->multipledtim =
 252                     cpu_to_le16(MRVDRV_DEFAULT_MULTIPLE_DTIM);
 253                 break;
 254
 255         case CMD_SUBCMD_EXIT_PS:
 256                 lbs_deb_cmd("PS command:" "SubCode- Exit PS\n");
 257                 break;
 258
 259         case CMD_SUBCMD_SLEEP_CONFIRMED:
 260                 lbs_deb_cmd("PS command: SubCode- sleep confirm\n");
 261                 break;
 262
 263         default:
 264                 break;
 265         }
 266
 267         lbs_deb_leave(LBS_DEB_CMD);
 268         return 0;
 269 }
 270
 271 int lbs_cmd_802_11_sleep_params(struct lbs_private *priv, uint16_t cmd_action,
 272                                 struct sleep_params *sp)
 273 {
 274         struct cmd_ds_802_11_sleep_params cmd;
 275         int ret;
 276
 277         lbs_deb_enter(LBS_DEB_CMD);
 278
 279         if (cmd_action == CMD_ACT_GET) {
 280                 memset(&cmd, 0, sizeof(cmd));
 281         } else {
 282                 cmd.error = cpu_to_le16(sp->sp_error);
 283                 cmd.offset = cpu_to_le16(sp->sp_offset);
 284                 cmd.stabletime = cpu_to_le16(sp->sp_stabletime);
 285                 cmd.calcontrol = sp->sp_calcontrol;
 286                 cmd.externalsleepclk = sp->sp_extsleepclk;
 287                 cmd.reserved = cpu_to_le16(sp->sp_reserved);
 288         }
 289         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 290         cmd.action = cpu_to_le16(cmd_action);
 291
 292         ret = lbs_cmd_with_response(priv, CMD_802_11_SLEEP_PARAMS, &cmd);
 293
 294         if (!ret) {
 295                 lbs_deb_cmd("error 0x%x, offset 0x%x, stabletime 0x%x, "
 296                             "calcontrol 0x%x extsleepclk 0x%x\n",
 297                             le16_to_cpu(cmd.error), le16_to_cpu(cmd.offset),
 298                             le16_to_cpu(cmd.stabletime), cmd.calcontrol,
 299                             cmd.externalsleepclk);
 300
 301                 sp->sp_error = le16_to_cpu(cmd.error);
 302                 sp->sp_offset = le16_to_cpu(cmd.offset);
 303                 sp->sp_stabletime = le16_to_cpu(cmd.stabletime);
 304                 sp->sp_calcontrol = cmd.calcontrol;
 305                 sp->sp_extsleepclk = cmd.externalsleepclk;
 306                 sp->sp_reserved = le16_to_cpu(cmd.reserved);
 307         }
 308
 309         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 310         return 0;
 311 }
 312
 313 static int lbs_wait_for_ds_awake(struct lbs_private *priv)
 314 {
 315         int ret = 0;
 316
 317         lbs_deb_enter(LBS_DEB_CMD);
 318
 319         if (priv->is_deep_sleep) {
 320                 if (!wait_event_interruptible_timeout(priv->ds_awake_q,
 321                                         !priv->is_deep_sleep, (10 * HZ))) {
 322                         lbs_pr_err("ds_awake_q: timer expired\n");
 323                         ret = -1;
 324                 }
 325         }
 326
 327         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 328         return ret;
 329 }
 330
 331 int lbs_set_deep_sleep(struct lbs_private *priv, int deep_sleep)
 332 {
 333         int ret =  0;
 334
 335         lbs_deb_enter(LBS_DEB_CMD);
 336
 337         if (deep_sleep) {
 338                 if (priv->is_deep_sleep != 1) {
 339                         lbs_deb_cmd("deep sleep: sleep\n");
 340                         BUG_ON(!priv->enter_deep_sleep);
 341                         ret = priv->enter_deep_sleep(priv);
 342                         if (!ret) {
 343                                 netif_stop_queue(priv->dev);
 344                                 netif_carrier_off(priv->dev);
 345                         }
 346                 } else {
 347                         lbs_pr_err("deep sleep: already enabled\n");
 348                 }
 349         } else {
 350                 if (priv->is_deep_sleep) {
 351                         lbs_deb_cmd("deep sleep: wakeup\n");
 352                         BUG_ON(!priv->exit_deep_sleep);
 353                         ret = priv->exit_deep_sleep(priv);
 354                         if (!ret) {
 355                                 ret = lbs_wait_for_ds_awake(priv);
 356                                 if (ret)
 357                                         lbs_pr_err("deep sleep: wakeup"
 358                                                         "failed\n");
 359                         }
 360                 }
 361         }
 362
 363         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 364         return ret;
 365 }
 366
 367 /**
 368  *  @brief Set an SNMP MIB value
 369  *
 370  *  @param priv         A pointer to struct lbs_private structure
 371  *  @param oid          The OID to set in the firmware
 372  *  @param val          Value to set the OID to
 373  *
 374  *  @return             0 on success, error on failure
 375  */
 376 int lbs_set_snmp_mib(struct lbs_private *priv, u32 oid, u16 val)
 377 {
 378         struct cmd_ds_802_11_snmp_mib cmd;
 379         int ret;
 380
 381         lbs_deb_enter(LBS_DEB_CMD);
 382
 383         memset(&cmd, 0, sizeof (cmd));
 384         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 385         cmd.action = cpu_to_le16(CMD_ACT_SET);
 386         cmd.oid = cpu_to_le16((u16) oid);
 387
 388         switch (oid) {
 389         case SNMP_MIB_OID_BSS_TYPE:
 390                 cmd.bufsize = cpu_to_le16(sizeof(u8));
 391                 cmd.value[0] = (val == IW_MODE_ADHOC) ? 2 : 1;
 392                 break;
 393         case SNMP_MIB_OID_11D_ENABLE:
 394         case SNMP_MIB_OID_FRAG_THRESHOLD:
 395         case SNMP_MIB_OID_RTS_THRESHOLD:
 396         case SNMP_MIB_OID_SHORT_RETRY_LIMIT:
 397         case SNMP_MIB_OID_LONG_RETRY_LIMIT:
 398                 cmd.bufsize = cpu_to_le16(sizeof(u16));
 399                 *((__le16 *)(&cmd.value)) = cpu_to_le16(val);
 400                 break;
 401         default:
 402                 lbs_deb_cmd("SNMP_CMD: (set) unhandled OID 0x%x\n", oid);
 403                 ret = -EINVAL;
 404                 goto out;
 405         }
 406
 407         lbs_deb_cmd("SNMP_CMD: (set) oid 0x%x, oid size 0x%x, value 0x%x\n",
 408                     le16_to_cpu(cmd.oid), le16_to_cpu(cmd.bufsize), val);
 409
 410         ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
 411
 412 out:
 413         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 414         return ret;
 415 }
 416
 417 /**
 418  *  @brief Get an SNMP MIB value
 419  *
 420  *  @param priv         A pointer to struct lbs_private structure
 421  *  @param oid          The OID to retrieve from the firmware
 422  *  @param out_val      Location for the returned value
 423  *
 424  *  @return             0 on success, error on failure
 425  */
 426 int lbs_get_snmp_mib(struct lbs_private *priv, u32 oid, u16 *out_val)
 427 {
 428         struct cmd_ds_802_11_snmp_mib cmd;
 429         int ret;
 430
 431         lbs_deb_enter(LBS_DEB_CMD);
 432
 433         memset(&cmd, 0, sizeof (cmd));
 434         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 435         cmd.action = cpu_to_le16(CMD_ACT_GET);
 436         cmd.oid = cpu_to_le16(oid);
 437
 438         ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
 439         if (ret)
 440                 goto out;
 441
 442         switch (le16_to_cpu(cmd.bufsize)) {
 443         case sizeof(u8):
 444                 if (oid == SNMP_MIB_OID_BSS_TYPE) {
 445                         if (cmd.value[0] == 2)
 446                                 *out_val = IW_MODE_ADHOC;
 447                         else
 448                                 *out_val = IW_MODE_INFRA;
 449                 } else
 450                         *out_val = cmd.value[0];
 451                 break;
 452         case sizeof(u16):
 453                 *out_val = le16_to_cpu(*((__le16 *)(&cmd.value)));
 454                 break;
 455         default:
 456                 lbs_deb_cmd("SNMP_CMD: (get) unhandled OID 0x%x size %d\n",
 457                             oid, le16_to_cpu(cmd.bufsize));
 458                 break;
 459         }
 460
 461 out:
 462         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 463         return ret;
 464 }
 465
 466 /**
 467  *  @brief Get the min, max, and current TX power
 468  *
 469  *  @param priv         A pointer to struct lbs_private structure
 470  *  @param curlevel     Current power level in dBm
 471  *  @param minlevel     Minimum supported power level in dBm (optional)
 472  *  @param maxlevel     Maximum supported power level in dBm (optional)
 473  *
 474  *  @return             0 on success, error on failure
 475  */
 476 int lbs_get_tx_power(struct lbs_private *priv, s16 *curlevel, s16 *minlevel,
 477                      s16 *maxlevel)
 478 {
 479         struct cmd_ds_802_11_rf_tx_power cmd;
 480         int ret;
 481
 482         lbs_deb_enter(LBS_DEB_CMD);
 483
 484         memset(&cmd, 0, sizeof(cmd));
 485         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 486         cmd.action = cpu_to_le16(CMD_ACT_GET);
 487
 488         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
 489         if (ret == 0) {
 490                 *curlevel = le16_to_cpu(cmd.curlevel);
 491                 if (minlevel)
 492                         *minlevel = cmd.minlevel;
 493                 if (maxlevel)
 494                         *maxlevel = cmd.maxlevel;
 495         }
 496
 497         lbs_deb_leave(LBS_DEB_CMD);
 498         return ret;
 499 }
 500
 501 /**
 502  *  @brief Set the TX power
 503  *
 504  *  @param priv         A pointer to struct lbs_private structure
 505  *  @param dbm          The desired power level in dBm
 506  *
 507  *  @return             0 on success, error on failure
 508  */
 509 int lbs_set_tx_power(struct lbs_private *priv, s16 dbm)
 510 {
 511         struct cmd_ds_802_11_rf_tx_power cmd;
 512         int ret;
 513
 514         lbs_deb_enter(LBS_DEB_CMD);
 515
 516         memset(&cmd, 0, sizeof(cmd));
 517         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 518         cmd.action = cpu_to_le16(CMD_ACT_SET);
 519         cmd.curlevel = cpu_to_le16(dbm);
 520
 521         lbs_deb_cmd("SET_RF_TX_POWER: %d dBm\n", dbm);
 522
 523         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
 524
 525         lbs_deb_leave(LBS_DEB_CMD);
 526         return ret;
 527 }
 528
 529 static int lbs_cmd_802_11_monitor_mode(struct cmd_ds_command *cmd,
 530                                       u16 cmd_action, void *pdata_buf)
 531 {
 532         struct cmd_ds_802_11_monitor_mode *monitor = &cmd->params.monitor;
 533
 534         cmd->command = cpu_to_le16(CMD_802_11_MONITOR_MODE);
 535         cmd->size =
 536             cpu_to_le16(sizeof(struct cmd_ds_802_11_monitor_mode) +
 537                              S_DS_GEN);
 538
 539         monitor->action = cpu_to_le16(cmd_action);
 540         if (cmd_action == CMD_ACT_SET) {
 541                 monitor->mode =
 542                     cpu_to_le16((u16) (*(u32 *) pdata_buf));
 543         }
 544
 545         return 0;
 546 }
 547
 548 /**
 549  *  @brief Get the radio channel
 550  *
 551  *  @param priv         A pointer to struct lbs_private structure
 552  *
 553  *  @return             The channel on success, error on failure
 554  */
 555 static int lbs_get_channel(struct lbs_private *priv)
 556 {
 557         struct cmd_ds_802_11_rf_channel cmd;
 558         int ret = 0;
 559
 560         lbs_deb_enter(LBS_DEB_CMD);
 561
 562         memset(&cmd, 0, sizeof(cmd));
 563         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 564         cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_GET);
 565
 566         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
 567         if (ret)
 568                 goto out;
 569
 570         ret = le16_to_cpu(cmd.channel);
 571         lbs_deb_cmd("current radio channel is %d\n", ret);
 572
 573 out:
 574         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 575         return ret;
 576 }
 577
 578 int lbs_update_channel(struct lbs_private *priv)
 579 {
 580         int ret;
 581
 582         /* the channel in f/w could be out of sync; get the current channel */
 583         lbs_deb_enter(LBS_DEB_ASSOC);
 584
 585         ret = lbs_get_channel(priv);
 586         if (ret > 0) {
 587                 priv->channel = ret;
 588                 ret = 0;
 589         }
 590         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 591         return ret;
 592 }
 593
 594 /**
 595  *  @brief Set the radio channel
 596  *
 597  *  @param priv         A pointer to struct lbs_private structure
 598  *  @param channel      The desired channel, or 0 to clear a locked channel
 599  *
 600  *  @return             0 on success, error on failure
 601  */
 602 int lbs_set_channel(struct lbs_private *priv, u8 channel)
 603 {
 604         struct cmd_ds_802_11_rf_channel cmd;
 605 #ifdef DEBUG
 606         u8 old_channel = priv->channel;
 607 #endif
 608         int ret = 0;
 609
 610         lbs_deb_enter(LBS_DEB_CMD);
 611
 612         memset(&cmd, 0, sizeof(cmd));
 613         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 614         cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET);
 615         cmd.channel = cpu_to_le16(channel);
 616
 617         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
 618         if (ret)
 619                 goto out;
 620
 621         priv->channel = (uint8_t) le16_to_cpu(cmd.channel);
 622         lbs_deb_cmd("channel switch from %d to %d\n", old_channel,
 623                 priv->channel);
 624
 625 out:
 626         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 627         return ret;
 628 }
 629
 630 static int lbs_cmd_reg_access(struct cmd_ds_command *cmdptr,
 631                                u8 cmd_action, void *pdata_buf)
 632 {
 633         struct lbs_offset_value *offval;
 634
 635         lbs_deb_enter(LBS_DEB_CMD);
 636
 637         offval = (struct lbs_offset_value *)pdata_buf;
 638
 639         switch (le16_to_cpu(cmdptr->command)) {
 640         case CMD_MAC_REG_ACCESS:
 641                 {
 642                         struct cmd_ds_mac_reg_access *macreg;
 643
 644                         cmdptr->size =
 645                             cpu_to_le16(sizeof (struct cmd_ds_mac_reg_access)
 646                                         + S_DS_GEN);
 647                         macreg =
 648                             (struct cmd_ds_mac_reg_access *)&cmdptr->params.
 649                             macreg;
 650
 651                         macreg->action = cpu_to_le16(cmd_action);
 652                         macreg->offset = cpu_to_le16((u16) offval->offset);
 653                         macreg->value = cpu_to_le32(offval->value);
 654
 655                         break;
 656                 }
 657
 658         case CMD_BBP_REG_ACCESS:
 659                 {
 660                         struct cmd_ds_bbp_reg_access *bbpreg;
 661
 662                         cmdptr->size =
 663                             cpu_to_le16(sizeof
 664                                              (struct cmd_ds_bbp_reg_access)
 665                                              + S_DS_GEN);
 666                         bbpreg =
 667                             (struct cmd_ds_bbp_reg_access *)&cmdptr->params.
 668                             bbpreg;
 669
 670                         bbpreg->action = cpu_to_le16(cmd_action);
 671                         bbpreg->offset = cpu_to_le16((u16) offval->offset);
 672                         bbpreg->value = (u8) offval->value;
 673
 674                         break;
 675                 }
 676
 677         case CMD_RF_REG_ACCESS:
 678                 {
 679                         struct cmd_ds_rf_reg_access *rfreg;
 680
 681                         cmdptr->size =
 682                             cpu_to_le16(sizeof
 683                                              (struct cmd_ds_rf_reg_access) +
 684                                              S_DS_GEN);
 685                         rfreg =
 686                             (struct cmd_ds_rf_reg_access *)&cmdptr->params.
 687                             rfreg;
 688
 689                         rfreg->action = cpu_to_le16(cmd_action);
 690                         rfreg->offset = cpu_to_le16((u16) offval->offset);
 691                         rfreg->value = (u8) offval->value;
 692
 693                         break;
 694                 }
 695
 696         default:
 697                 break;
 698         }
 699
 700         lbs_deb_leave(LBS_DEB_CMD);
 701         return 0;
 702 }
 703
 704 static int lbs_cmd_bt_access(struct cmd_ds_command *cmd,
 705                                u16 cmd_action, void *pdata_buf)
 706 {
 707         struct cmd_ds_bt_access *bt_access = &cmd->params.bt;
 708         lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
 709
 710         cmd->command = cpu_to_le16(CMD_BT_ACCESS);
 711         cmd->size = cpu_to_le16(sizeof(struct cmd_ds_bt_access) + S_DS_GEN);
 712         cmd->result = 0;
 713         bt_access->action = cpu_to_le16(cmd_action);
 714
 715         switch (cmd_action) {
 716         case CMD_ACT_BT_ACCESS_ADD:
 717                 memcpy(bt_access->addr1, pdata_buf, 2 * ETH_ALEN);
 718                 lbs_deb_hex(LBS_DEB_MESH, "BT_ADD: blinded MAC addr", bt_access->addr1, 6);
 719                 break;
 720         case CMD_ACT_BT_ACCESS_DEL:
 721                 memcpy(bt_access->addr1, pdata_buf, 1 * ETH_ALEN);
 722                 lbs_deb_hex(LBS_DEB_MESH, "BT_DEL: blinded MAC addr", bt_access->addr1, 6);
 723                 break;
 724         case CMD_ACT_BT_ACCESS_LIST:
 725                 bt_access->id = cpu_to_le32(*(u32 *) pdata_buf);
 726                 break;
 727         case CMD_ACT_BT_ACCESS_RESET:
 728                 break;
 729         case CMD_ACT_BT_ACCESS_SET_INVERT:
 730                 bt_access->id = cpu_to_le32(*(u32 *) pdata_buf);
 731                 break;
 732         case CMD_ACT_BT_ACCESS_GET_INVERT:
 733                 break;
 734         default:
 735                 break;
 736         }
 737         lbs_deb_leave(LBS_DEB_CMD);
 738         return 0;
 739 }
 740
 741 static int lbs_cmd_fwt_access(struct cmd_ds_command *cmd,
 742                                u16 cmd_action, void *pdata_buf)
 743 {
 744         struct cmd_ds_fwt_access *fwt_access = &cmd->params.fwt;
 745         lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
 746
 747         cmd->command = cpu_to_le16(CMD_FWT_ACCESS);
 748         cmd->size = cpu_to_le16(sizeof(struct cmd_ds_fwt_access) + S_DS_GEN);
 749         cmd->result = 0;
 750
 751         if (pdata_buf)
 752                 memcpy(fwt_access, pdata_buf, sizeof(*fwt_access));
 753         else
 754                 memset(fwt_access, 0, sizeof(*fwt_access));
 755
 756         fwt_access->action = cpu_to_le16(cmd_action);
 757
 758         lbs_deb_leave(LBS_DEB_CMD);
 759         return 0;
 760 }
 761
 762 int lbs_mesh_access(struct lbs_private *priv, uint16_t cmd_action,
 763                     struct cmd_ds_mesh_access *cmd)
 764 {
 765         int ret;
 766
 767         lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
 768
 769         cmd->hdr.command = cpu_to_le16(CMD_MESH_ACCESS);
 770         cmd->hdr.size = cpu_to_le16(sizeof(*cmd));
 771         cmd->hdr.result = 0;
 772
 773         cmd->action = cpu_to_le16(cmd_action);
 774
 775         ret = lbs_cmd_with_response(priv, CMD_MESH_ACCESS, cmd);
 776
 777         lbs_deb_leave(LBS_DEB_CMD);
 778         return ret;
 779 }
 780
 781 static int __lbs_mesh_config_send(struct lbs_private *priv,
 782                                   struct cmd_ds_mesh_config *cmd,
 783                                   uint16_t action, uint16_t type)
 784 {
 785         int ret;
 786         u16 command = CMD_MESH_CONFIG_OLD;
 787
 788         lbs_deb_enter(LBS_DEB_CMD);
 789
 790         /*
 791          * Command id is 0xac for v10 FW along with mesh interface
 792          * id in bits 14-13-12.
 793          */
 794         if (priv->mesh_fw_ver == MESH_FW_NEW)
 795                 command = CMD_MESH_CONFIG |
 796                           (MESH_IFACE_ID << MESH_IFACE_BIT_OFFSET);
 797
 798         cmd->hdr.command = cpu_to_le16(command);
 799         cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_mesh_config));
 800         cmd->hdr.result = 0;
 801
 802         cmd->type = cpu_to_le16(type);
 803         cmd->action = cpu_to_le16(action);
 804
 805         ret = lbs_cmd_with_response(priv, command, cmd);
 806
 807         lbs_deb_leave(LBS_DEB_CMD);
 808         return ret;
 809 }
 810
 811 int lbs_mesh_config_send(struct lbs_private *priv,
 812                          struct cmd_ds_mesh_config *cmd,
 813                          uint16_t action, uint16_t type)
 814 {
 815         int ret;
 816
 817         if (!(priv->fwcapinfo & FW_CAPINFO_PERSISTENT_CONFIG))
 818                 return -EOPNOTSUPP;
 819
 820         ret = __lbs_mesh_config_send(priv, cmd, action, type);
 821         return ret;
 822 }
 823
 824 /* This function is the CMD_MESH_CONFIG legacy function.  It only handles the
 825  * START and STOP actions.  The extended actions supported by CMD_MESH_CONFIG
 826  * are all handled by preparing a struct cmd_ds_mesh_config and passing it to
 827  * lbs_mesh_config_send.
 828  */
 829 int lbs_mesh_config(struct lbs_private *priv, uint16_t action, uint16_t chan)
 830 {
 831         struct cmd_ds_mesh_config cmd;
 832         struct mrvl_meshie *ie;
 833         DECLARE_SSID_BUF(ssid);
 834
 835         memset(&cmd, 0, sizeof(cmd));
 836         cmd.channel = cpu_to_le16(chan);
 837         ie = (struct mrvl_meshie *)cmd.data;
 838
 839         switch (action) {
 840         case CMD_ACT_MESH_CONFIG_START:
 841                 ie->id = WLAN_EID_GENERIC;
 842                 ie->val.oui[0] = 0x00;
 843                 ie->val.oui[1] = 0x50;
 844                 ie->val.oui[2] = 0x43;
 845                 ie->val.type = MARVELL_MESH_IE_TYPE;
 846                 ie->val.subtype = MARVELL_MESH_IE_SUBTYPE;
 847                 ie->val.version = MARVELL_MESH_IE_VERSION;
 848                 ie->val.active_protocol_id = MARVELL_MESH_PROTO_ID_HWMP;
 849                 ie->val.active_metric_id = MARVELL_MESH_METRIC_ID;
 850                 ie->val.mesh_capability = MARVELL_MESH_CAPABILITY;
 851                 ie->val.mesh_id_len = priv->mesh_ssid_len;
 852                 memcpy(ie->val.mesh_id, priv->mesh_ssid, priv->mesh_ssid_len);
 853                 ie->len = sizeof(struct mrvl_meshie_val) -
 854                         IEEE80211_MAX_SSID_LEN + priv->mesh_ssid_len;
 855                 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie_val));
 856                 break;
 857         case CMD_ACT_MESH_CONFIG_STOP:
 858                 break;
 859         default:
 860                 return -1;
 861         }
 862         lbs_deb_cmd("mesh config action %d type %x channel %d SSID %s\n",
 863                     action, priv->mesh_tlv, chan,
 864                     print_ssid(ssid, priv->mesh_ssid, priv->mesh_ssid_len));
 865
 866         return __lbs_mesh_config_send(priv, &cmd, action, priv->mesh_tlv);
 867 }
 868
 869 static void lbs_queue_cmd(struct lbs_private *priv,
 870                           struct cmd_ctrl_node *cmdnode)
 871 {
 872         unsigned long flags;
 873         int addtail = 1;
 874
 875         lbs_deb_enter(LBS_DEB_HOST);
 876
 877         if (!cmdnode) {
 878                 lbs_deb_host("QUEUE_CMD: cmdnode is NULL\n");
 879                 goto done;
 880         }
 881         if (!cmdnode->cmdbuf->size) {
 882                 lbs_deb_host("DNLD_CMD: cmd size is zero\n");
 883                 goto done;
 884         }
 885         cmdnode->result = 0;
 886
 887         /* Exit_PS command needs to be queued in the header always. */
 888         if (le16_to_cpu(cmdnode->cmdbuf->command) == CMD_802_11_PS_MODE) {
 889                 struct cmd_ds_802_11_ps_mode *psm = (void *) &cmdnode->cmdbuf[1];
 890
 891                 if (psm->action == cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
 892                         if (priv->psstate != PS_STATE_FULL_POWER)
 893                                 addtail = 0;
 894                 }
 895         }
 896
 897         spin_lock_irqsave(&priv->driver_lock, flags);
 898
 899         if (addtail)
 900                 list_add_tail(&cmdnode->list, &priv->cmdpendingq);
 901         else
 902                 list_add(&cmdnode->list, &priv->cmdpendingq);
 903
 904         spin_unlock_irqrestore(&priv->driver_lock, flags);
 905
 906         lbs_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n",
 907                      le16_to_cpu(cmdnode->cmdbuf->command));
 908
 909 done:
 910         lbs_deb_leave(LBS_DEB_HOST);
 911 }
 912
 913 static void lbs_submit_command(struct lbs_private *priv,
 914                                struct cmd_ctrl_node *cmdnode)
 915 {
 916         unsigned long flags;
 917         struct cmd_header *cmd;
 918         uint16_t cmdsize;
 919         uint16_t command;
 920         int timeo = 3 * HZ;
 921         int ret;
 922
 923         lbs_deb_enter(LBS_DEB_HOST);
 924
 925         cmd = cmdnode->cmdbuf;
 926
 927         spin_lock_irqsave(&priv->driver_lock, flags);
 928         priv->cur_cmd = cmdnode;
 929         priv->cur_cmd_retcode = 0;
 930         spin_unlock_irqrestore(&priv->driver_lock, flags);
 931
 932         cmdsize = le16_to_cpu(cmd->size);
 933         command = le16_to_cpu(cmd->command);
 934
 935         /* These commands take longer */
 936         if (command == CMD_802_11_SCAN || command == CMD_802_11_ASSOCIATE)
 937                 timeo = 5 * HZ;
 938
 939         lbs_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n",
 940                      command, le16_to_cpu(cmd->seqnum), cmdsize);
 941         lbs_deb_hex(LBS_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize);
 942
 943         ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize);
 944
 945         if (ret) {
 946                 lbs_pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret);
 947                 /* Let the timer kick in and retry, and potentially reset
 948                    the whole thing if the condition persists */
 949                 timeo = HZ/4;
 950         }
 951
 952         if (command == CMD_802_11_DEEP_SLEEP) {
 953                 if (priv->is_auto_deep_sleep_enabled) {
 954                         priv->wakeup_dev_required = 1;
 955                         priv->dnld_sent = 0;
 956                 }
 957                 priv->is_deep_sleep = 1;
 958                 lbs_complete_command(priv, cmdnode, 0);
 959         } else {
 960                 /* Setup the timer after transmit command */
 961                 mod_timer(&priv->command_timer, jiffies + timeo);
 962         }
 963
 964         lbs_deb_leave(LBS_DEB_HOST);
 965 }
 966
 967 /**
 968  *  This function inserts command node to cmdfreeq
 969  *  after cleans it. Requires priv->driver_lock held.
 970  */
 971 static void __lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
 972                                          struct cmd_ctrl_node *cmdnode)
 973 {
 974         lbs_deb_enter(LBS_DEB_HOST);
 975
 976         if (!cmdnode)
 977                 goto out;
 978
 979         cmdnode->callback = NULL;
 980         cmdnode->callback_arg = 0;
 981
 982         memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE);
 983
 984         list_add_tail(&cmdnode->list, &priv->cmdfreeq);
 985  out:
 986         lbs_deb_leave(LBS_DEB_HOST);
 987 }
 988
 989 static void lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
 990         struct cmd_ctrl_node *ptempcmd)
 991 {
 992         unsigned long flags;
 993
 994         spin_lock_irqsave(&priv->driver_lock, flags);
 995         __lbs_cleanup_and_insert_cmd(priv, ptempcmd);
 996         spin_unlock_irqrestore(&priv->driver_lock, flags);
 997 }
 998
 999 void lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd,
1000                           int result)
1001 {
1002         if (cmd == priv->cur_cmd)
1003                 priv->cur_cmd_retcode = result;
1004
1005         cmd->result = result;
1006         cmd->cmdwaitqwoken = 1;
1007         wake_up_interruptible(&cmd->cmdwait_q);
1008
1009         if (!cmd->callback || cmd->callback == lbs_cmd_async_callback)
1010                 __lbs_cleanup_and_insert_cmd(priv, cmd);
1011         priv->cur_cmd = NULL;
1012 }
1013
1014 int lbs_set_radio(struct lbs_private *priv, u8 preamble, u8 radio_on)
1015 {
1016         struct cmd_ds_802_11_radio_control cmd;
1017         int ret = -EINVAL;
1018
1019         lbs_deb_enter(LBS_DEB_CMD);
1020
1021         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1022         cmd.action = cpu_to_le16(CMD_ACT_SET);
1023
1024         /* Only v8 and below support setting the preamble */
1025         if (priv->fwrelease < 0x09000000) {
1026                 switch (preamble) {
1027                 case RADIO_PREAMBLE_SHORT:
1028                         if (!(priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE))
1029                                 goto out;
1030                         /* Fall through */
1031                 case RADIO_PREAMBLE_AUTO:
1032                 case RADIO_PREAMBLE_LONG:
1033                         cmd.control = cpu_to_le16(preamble);
1034                         break;
1035                 default:
1036                         goto out;
1037                 }
1038         }
1039
1040         if (radio_on)
1041                 cmd.control |= cpu_to_le16(0x1);
1042         else {
1043                 cmd.control &= cpu_to_le16(~0x1);
1044                 priv->txpower_cur = 0;
1045         }
1046
1047         lbs_deb_cmd("RADIO_CONTROL: radio %s, preamble %d\n",
1048                     radio_on ? "ON" : "OFF", preamble);
1049
1050         priv->radio_on = radio_on;
1051
1052         ret = lbs_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd);
1053
1054 out:
1055         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
1056         return ret;
1057 }
1058
1059 void lbs_set_mac_control(struct lbs_private *priv)
1060 {
1061         struct cmd_ds_mac_control cmd;
1062
1063         lbs_deb_enter(LBS_DEB_CMD);
1064
1065         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1066         cmd.action = cpu_to_le16(priv->mac_control);
1067         cmd.reserved = 0;
1068
1069         lbs_cmd_async(priv, CMD_MAC_CONTROL, &cmd.hdr, sizeof(cmd));
1070
1071         lbs_deb_leave(LBS_DEB_CMD);
1072 }
1073
1074 /**
1075  *  @brief This function prepare the command before send to firmware.
1076  *
1077  *  @param priv         A pointer to struct lbs_private structure
1078  *  @param cmd_no       command number
1079  *  @param cmd_action   command action: GET or SET
1080  *  @param wait_option  wait option: wait response or not
1081  *  @param cmd_oid      cmd oid: treated as sub command
1082  *  @param pdata_buf    A pointer to informaion buffer
1083  *  @return             0 or -1
1084  */
1085 int lbs_prepare_and_send_command(struct lbs_private *priv,
1086                           u16 cmd_no,
1087                           u16 cmd_action,
1088                           u16 wait_option, u32 cmd_oid, void *pdata_buf)
1089 {
1090         int ret = 0;
1091         struct cmd_ctrl_node *cmdnode;
1092         struct cmd_ds_command *cmdptr;
1093         unsigned long flags;
1094
1095         lbs_deb_enter(LBS_DEB_HOST);
1096
1097         if (!priv) {
1098                 lbs_deb_host("PREP_CMD: priv is NULL\n");
1099                 ret = -1;
1100                 goto done;
1101         }
1102
1103         if (priv->surpriseremoved) {
1104                 lbs_deb_host("PREP_CMD: card removed\n");
1105                 ret = -1;
1106                 goto done;
1107         }
1108
1109         if (!lbs_is_cmd_allowed(priv)) {
1110                 ret = -EBUSY;
1111                 goto done;
1112         }
1113
1114         cmdnode = lbs_get_cmd_ctrl_node(priv);
1115
1116         if (cmdnode == NULL) {
1117                 lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
1118
1119                 /* Wake up main thread to execute next command */
1120                 wake_up_interruptible(&priv->waitq);
1121                 ret = -1;
1122                 goto done;
1123         }
1124
1125         cmdnode->callback = NULL;
1126         cmdnode->callback_arg = (unsigned long)pdata_buf;
1127
1128         cmdptr = (struct cmd_ds_command *)cmdnode->cmdbuf;
1129
1130         lbs_deb_host("PREP_CMD: command 0x%04x\n", cmd_no);
1131
1132         /* Set sequence number, command and INT option */
1133         priv->seqnum++;
1134         cmdptr->seqnum = cpu_to_le16(priv->seqnum);
1135
1136         cmdptr->command = cpu_to_le16(cmd_no);
1137         cmdptr->result = 0;
1138
1139         switch (cmd_no) {
1140         case CMD_802_11_PS_MODE:
1141                 ret = lbs_cmd_802_11_ps_mode(cmdptr, cmd_action);
1142                 break;
1143
1144         case CMD_MAC_REG_ACCESS:
1145         case CMD_BBP_REG_ACCESS:
1146         case CMD_RF_REG_ACCESS:
1147                 ret = lbs_cmd_reg_access(cmdptr, cmd_action, pdata_buf);
1148                 break;
1149
1150         case CMD_802_11_MONITOR_MODE:
1151                 ret = lbs_cmd_802_11_monitor_mode(cmdptr,
1152                                           cmd_action, pdata_buf);
1153                 break;
1154
1155         case CMD_802_11_RSSI:
1156                 ret = lbs_cmd_802_11_rssi(priv, cmdptr);
1157                 break;
1158
1159         case CMD_802_11_SET_AFC:
1160         case CMD_802_11_GET_AFC:
1161
1162                 cmdptr->command = cpu_to_le16(cmd_no);
1163                 cmdptr->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_afc) +
1164                                            S_DS_GEN);
1165
1166                 memmove(&cmdptr->params.afc,
1167                         pdata_buf, sizeof(struct cmd_ds_802_11_afc));
1168
1169                 ret = 0;
1170                 goto done;
1171
1172         case CMD_802_11_TPC_CFG:
1173                 cmdptr->command = cpu_to_le16(CMD_802_11_TPC_CFG);
1174                 cmdptr->size =
1175                     cpu_to_le16(sizeof(struct cmd_ds_802_11_tpc_cfg) +
1176                                      S_DS_GEN);
1177
1178                 memmove(&cmdptr->params.tpccfg,
1179                         pdata_buf, sizeof(struct cmd_ds_802_11_tpc_cfg));
1180
1181                 ret = 0;
1182                 break;
1183         case CMD_802_11_LED_GPIO_CTRL:
1184                 {
1185                         struct mrvl_ie_ledgpio *gpio =
1186                             (struct mrvl_ie_ledgpio*)
1187                             cmdptr->params.ledgpio.data;
1188
1189                         memmove(&cmdptr->params.ledgpio,
1190                                 pdata_buf,
1191                                 sizeof(struct cmd_ds_802_11_led_ctrl));
1192
1193                         cmdptr->command =
1194                             cpu_to_le16(CMD_802_11_LED_GPIO_CTRL);
1195
1196 #define ACTION_NUMLED_TLVTYPE_LEN_FIELDS_LEN 8
1197                         cmdptr->size =
1198                             cpu_to_le16(le16_to_cpu(gpio->header.len)
1199                                 + S_DS_GEN
1200                                 + ACTION_NUMLED_TLVTYPE_LEN_FIELDS_LEN);
1201                         gpio->header.len = gpio->header.len;
1202
1203                         ret = 0;
1204                         break;
1205                 }
1206
1207         case CMD_BT_ACCESS:
1208                 ret = lbs_cmd_bt_access(cmdptr, cmd_action, pdata_buf);
1209                 break;
1210
1211         case CMD_FWT_ACCESS:
1212                 ret = lbs_cmd_fwt_access(cmdptr, cmd_action, pdata_buf);
1213                 break;
1214
1215         case CMD_GET_TSF:
1216                 cmdptr->command = cpu_to_le16(CMD_GET_TSF);
1217                 cmdptr->size = cpu_to_le16(sizeof(struct cmd_ds_get_tsf) +
1218                                            S_DS_GEN);
1219                 ret = 0;
1220                 break;
1221         case CMD_802_11_BEACON_CTRL:
1222                 ret = lbs_cmd_bcn_ctrl(priv, cmdptr, cmd_action);
1223                 break;
1224         case CMD_802_11_DEEP_SLEEP:
1225                 cmdptr->command = cpu_to_le16(CMD_802_11_DEEP_SLEEP);
1226                 cmdptr->size = cpu_to_le16(S_DS_GEN);
1227                 break;
1228         default:
1229                 lbs_pr_err("PREP_CMD: unknown command 0x%04x\n", cmd_no);
1230                 ret = -1;
1231                 break;
1232         }
1233
1234         /* return error, since the command preparation failed */
1235         if (ret != 0) {
1236                 lbs_deb_host("PREP_CMD: command preparation failed\n");
1237                 lbs_cleanup_and_insert_cmd(priv, cmdnode);
1238                 ret = -1;
1239                 goto done;
1240         }
1241
1242         cmdnode->cmdwaitqwoken = 0;
1243
1244         lbs_queue_cmd(priv, cmdnode);
1245         wake_up_interruptible(&priv->waitq);
1246
1247         if (wait_option & CMD_OPTION_WAITFORRSP) {
1248                 lbs_deb_host("PREP_CMD: wait for response\n");
1249                 might_sleep();
1250                 wait_event_interruptible(cmdnode->cmdwait_q,
1251                                          cmdnode->cmdwaitqwoken);
1252         }
1253
1254         spin_lock_irqsave(&priv->driver_lock, flags);
1255         if (priv->cur_cmd_retcode) {
1256                 lbs_deb_host("PREP_CMD: command failed with return code %d\n",
1257                        priv->cur_cmd_retcode);
1258                 priv->cur_cmd_retcode = 0;
1259                 ret = -1;
1260         }
1261         spin_unlock_irqrestore(&priv->driver_lock, flags);
1262
1263 done:
1264         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1265         return ret;
1266 }
1267
1268 /**
1269  *  @brief This function allocates the command buffer and link
1270  *  it to command free queue.
1271  *
1272  *  @param priv         A pointer to struct lbs_private structure
1273  *  @return             0 or -1
1274  */
1275 int lbs_allocate_cmd_buffer(struct lbs_private *priv)
1276 {
1277         int ret = 0;
1278         u32 bufsize;
1279         u32 i;
1280         struct cmd_ctrl_node *cmdarray;
1281
1282         lbs_deb_enter(LBS_DEB_HOST);
1283
1284         /* Allocate and initialize the command array */
1285         bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS;
1286         if (!(cmdarray = kzalloc(bufsize, GFP_KERNEL))) {
1287                 lbs_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n");
1288                 ret = -1;
1289                 goto done;
1290         }
1291         priv->cmd_array = cmdarray;
1292
1293         /* Allocate and initialize each command buffer in the command array */
1294         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1295                 cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL);
1296                 if (!cmdarray[i].cmdbuf) {
1297                         lbs_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n");
1298                         ret = -1;
1299                         goto done;
1300                 }
1301         }
1302
1303         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1304                 init_waitqueue_head(&cmdarray[i].cmdwait_q);
1305                 lbs_cleanup_and_insert_cmd(priv, &cmdarray[i]);
1306         }
1307         ret = 0;
1308
1309 done:
1310         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1311         return ret;
1312 }
1313
1314 /**
1315  *  @brief This function frees the command buffer.
1316  *
1317  *  @param priv         A pointer to struct lbs_private structure
1318  *  @return             0 or -1
1319  */
1320 int lbs_free_cmd_buffer(struct lbs_private *priv)
1321 {
1322         struct cmd_ctrl_node *cmdarray;
1323         unsigned int i;
1324
1325         lbs_deb_enter(LBS_DEB_HOST);
1326
1327         /* need to check if cmd array is allocated or not */
1328         if (priv->cmd_array == NULL) {
1329                 lbs_deb_host("FREE_CMD_BUF: cmd_array is NULL\n");
1330                 goto done;
1331         }
1332
1333         cmdarray = priv->cmd_array;
1334
1335         /* Release shared memory buffers */
1336         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1337                 if (cmdarray[i].cmdbuf) {
1338                         kfree(cmdarray[i].cmdbuf);
1339                         cmdarray[i].cmdbuf = NULL;
1340                 }
1341         }
1342
1343         /* Release cmd_ctrl_node */
1344         if (priv->cmd_array) {
1345                 kfree(priv->cmd_array);
1346                 priv->cmd_array = NULL;
1347         }
1348
1349 done:
1350         lbs_deb_leave(LBS_DEB_HOST);
1351         return 0;
1352 }
1353
1354 /**
1355  *  @brief This function gets a free command node if available in
1356  *  command free queue.
1357  *
1358  *  @param priv         A pointer to struct lbs_private structure
1359  *  @return cmd_ctrl_node A pointer to cmd_ctrl_node structure or NULL
1360  */
1361 static struct cmd_ctrl_node *lbs_get_cmd_ctrl_node(struct lbs_private *priv)
1362 {
1363         struct cmd_ctrl_node *tempnode;
1364         unsigned long flags;
1365
1366         lbs_deb_enter(LBS_DEB_HOST);
1367
1368         if (!priv)
1369                 return NULL;
1370
1371         spin_lock_irqsave(&priv->driver_lock, flags);
1372
1373         if (!list_empty(&priv->cmdfreeq)) {
1374                 tempnode = list_first_entry(&priv->cmdfreeq,
1375                                             struct cmd_ctrl_node, list);
1376                 list_del(&tempnode->list);
1377         } else {
1378                 lbs_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n");
1379                 tempnode = NULL;
1380         }
1381
1382         spin_unlock_irqrestore(&priv->driver_lock, flags);
1383
1384         lbs_deb_leave(LBS_DEB_HOST);
1385         return tempnode;
1386 }
1387
1388 /**
1389  *  @brief This function executes next command in command
1390  *  pending queue. It will put firmware back to PS mode
1391  *  if applicable.
1392  *
1393  *  @param priv     A pointer to struct lbs_private structure
1394  *  @return        0 or -1
1395  */
1396 int lbs_execute_next_command(struct lbs_private *priv)
1397 {
1398         struct cmd_ctrl_node *cmdnode = NULL;
1399         struct cmd_header *cmd;
1400         unsigned long flags;
1401         int ret = 0;
1402
1403         /* Debug group is LBS_DEB_THREAD and not LBS_DEB_HOST, because the
1404          * only caller to us is lbs_thread() and we get even when a
1405          * data packet is received */
1406         lbs_deb_enter(LBS_DEB_THREAD);
1407
1408         spin_lock_irqsave(&priv->driver_lock, flags);
1409
1410         if (priv->cur_cmd) {
1411                 lbs_pr_alert( "EXEC_NEXT_CMD: already processing command!\n");
1412                 spin_unlock_irqrestore(&priv->driver_lock, flags);
1413                 ret = -1;
1414                 goto done;
1415         }
1416
1417         if (!list_empty(&priv->cmdpendingq)) {
1418                 cmdnode = list_first_entry(&priv->cmdpendingq,
1419                                            struct cmd_ctrl_node, list);
1420         }
1421
1422         spin_unlock_irqrestore(&priv->driver_lock, flags);
1423
1424         if (cmdnode) {
1425                 cmd = cmdnode->cmdbuf;
1426
1427                 if (is_command_allowed_in_ps(le16_to_cpu(cmd->command))) {
1428                         if ((priv->psstate == PS_STATE_SLEEP) ||
1429                             (priv->psstate == PS_STATE_PRE_SLEEP)) {
1430                                 lbs_deb_host(
1431                                        "EXEC_NEXT_CMD: cannot send cmd 0x%04x in psstate %d\n",
1432                                        le16_to_cpu(cmd->command),
1433                                        priv->psstate);
1434                                 ret = -1;
1435                                 goto done;
1436                         }
1437                         lbs_deb_host("EXEC_NEXT_CMD: OK to send command "
1438                                      "0x%04x in psstate %d\n",
1439                                      le16_to_cpu(cmd->command), priv->psstate);
1440                 } else if (priv->psstate != PS_STATE_FULL_POWER) {
1441                         /*
1442                          * 1. Non-PS command:
1443                          * Queue it. set needtowakeup to TRUE if current state
1444                          * is SLEEP, otherwise call lbs_ps_wakeup to send Exit_PS.
1445                          * 2. PS command but not Exit_PS:
1446                          * Ignore it.
1447                          * 3. PS command Exit_PS:
1448                          * Set needtowakeup to TRUE if current state is SLEEP,
1449                          * otherwise send this command down to firmware
1450                          * immediately.
1451                          */
1452                         if (cmd->command != cpu_to_le16(CMD_802_11_PS_MODE)) {
1453                                 /*  Prepare to send Exit PS,
1454                                  *  this non PS command will be sent later */
1455                                 if ((priv->psstate == PS_STATE_SLEEP)
1456                                     || (priv->psstate == PS_STATE_PRE_SLEEP)
1457                                     ) {
1458                                         /* w/ new scheme, it will not reach here.
1459                                            since it is blocked in main_thread. */
1460                                         priv->needtowakeup = 1;
1461                                 } else
1462                                         lbs_ps_wakeup(priv, 0);
1463
1464                                 ret = 0;
1465                                 goto done;
1466                         } else {
1467                                 /*
1468                                  * PS command. Ignore it if it is not Exit_PS.
1469                                  * otherwise send it down immediately.
1470                                  */
1471                                 struct cmd_ds_802_11_ps_mode *psm = (void *)&cmd[1];
1472
1473                                 lbs_deb_host(
1474                                        "EXEC_NEXT_CMD: PS cmd, action 0x%02x\n",
1475                                        psm->action);
1476                                 if (psm->action !=
1477                                     cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
1478                                         lbs_deb_host(
1479                                                "EXEC_NEXT_CMD: ignore ENTER_PS cmd\n");
1480                                         list_del(&cmdnode->list);
1481                                         spin_lock_irqsave(&priv->driver_lock, flags);
1482                                         lbs_complete_command(priv, cmdnode, 0);
1483                                         spin_unlock_irqrestore(&priv->driver_lock, flags);
1484
1485                                         ret = 0;
1486                                         goto done;
1487                                 }
1488
1489                                 if ((priv->psstate == PS_STATE_SLEEP) ||
1490                                     (priv->psstate == PS_STATE_PRE_SLEEP)) {
1491                                         lbs_deb_host(
1492                                                "EXEC_NEXT_CMD: ignore EXIT_PS cmd in sleep\n");
1493                                         list_del(&cmdnode->list);
1494                                         spin_lock_irqsave(&priv->driver_lock, flags);
1495                                         lbs_complete_command(priv, cmdnode, 0);
1496                                         spin_unlock_irqrestore(&priv->driver_lock, flags);
1497                                         priv->needtowakeup = 1;
1498
1499                                         ret = 0;
1500                                         goto done;
1501                                 }
1502
1503                                 lbs_deb_host(
1504                                        "EXEC_NEXT_CMD: sending EXIT_PS\n");
1505                         }
1506                 }
1507                 list_del(&cmdnode->list);
1508                 lbs_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n",
1509                             le16_to_cpu(cmd->command));
1510                 lbs_submit_command(priv, cmdnode);
1511         } else {
1512                 /*
1513                  * check if in power save mode, if yes, put the device back
1514                  * to PS mode
1515                  */
1516                 if ((priv->psmode != LBS802_11POWERMODECAM) &&
1517                     (priv->psstate == PS_STATE_FULL_POWER) &&
1518                     ((priv->connect_status == LBS_CONNECTED) ||
1519                     (priv->mesh_connect_status == LBS_CONNECTED))) {
1520                         if (priv->secinfo.WPAenabled ||
1521                             priv->secinfo.WPA2enabled) {
1522                                 /* check for valid WPA group keys */
1523                                 if (priv->wpa_mcast_key.len ||
1524                                     priv->wpa_unicast_key.len) {
1525                                         lbs_deb_host(
1526                                                "EXEC_NEXT_CMD: WPA enabled and GTK_SET"
1527                                                " go back to PS_SLEEP");
1528                                         lbs_ps_sleep(priv, 0);
1529                                 }
1530                         } else {
1531                                 lbs_deb_host(
1532                                        "EXEC_NEXT_CMD: cmdpendingq empty, "
1533                                        "go back to PS_SLEEP");
1534                                 lbs_ps_sleep(priv, 0);
1535                         }
1536                 }
1537         }
1538
1539         ret = 0;
1540 done:
1541         lbs_deb_leave(LBS_DEB_THREAD);
1542         return ret;
1543 }
1544
1545 void lbs_send_iwevcustom_event(struct lbs_private *priv, s8 *str)
1546 {
1547         union iwreq_data iwrq;
1548         u8 buf[50];
1549
1550         lbs_deb_enter(LBS_DEB_WEXT);
1551
1552         memset(&iwrq, 0, sizeof(union iwreq_data));
1553         memset(buf, 0, sizeof(buf));
1554
1555         snprintf(buf, sizeof(buf) - 1, "%s", str);
1556
1557         iwrq.data.length = strlen(buf) + 1 + IW_EV_LCP_LEN;
1558
1559         /* Send Event to upper layer */
1560         lbs_deb_wext("event indication string %s\n", (char *)buf);
1561         lbs_deb_wext("event indication length %d\n", iwrq.data.length);
1562         lbs_deb_wext("sending wireless event IWEVCUSTOM for %s\n", str);
1563
1564         wireless_send_event(priv->dev, IWEVCUSTOM, &iwrq, buf);
1565
1566         lbs_deb_leave(LBS_DEB_WEXT);
1567 }
1568
1569 static void lbs_send_confirmsleep(struct lbs_private *priv)
1570 {
1571         unsigned long flags;
1572         int ret;
1573
1574         lbs_deb_enter(LBS_DEB_HOST);
1575         lbs_deb_hex(LBS_DEB_HOST, "sleep confirm", (u8 *) &confirm_sleep,
1576                 sizeof(confirm_sleep));
1577
1578         ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &confirm_sleep,
1579                 sizeof(confirm_sleep));
1580         if (ret) {
1581                 lbs_pr_alert("confirm_sleep failed\n");
1582                 goto out;
1583         }
1584
1585         spin_lock_irqsave(&priv->driver_lock, flags);
1586
1587         /* We don't get a response on the sleep-confirmation */
1588         priv->dnld_sent = DNLD_RES_RECEIVED;
1589
1590         /* If nothing to do, go back to sleep (?) */
1591         if (!__kfifo_len(priv->event_fifo) && !priv->resp_len[priv->resp_idx])
1592                 priv->psstate = PS_STATE_SLEEP;
1593
1594         spin_unlock_irqrestore(&priv->driver_lock, flags);
1595
1596 out:
1597         lbs_deb_leave(LBS_DEB_HOST);
1598 }
1599
1600 void lbs_ps_sleep(struct lbs_private *priv, int wait_option)
1601 {
1602         lbs_deb_enter(LBS_DEB_HOST);
1603
1604         /*
1605          * PS is currently supported only in Infrastructure mode
1606          * Remove this check if it is to be supported in IBSS mode also
1607          */
1608
1609         lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
1610                               CMD_SUBCMD_ENTER_PS, wait_option, 0, NULL);
1611
1612         lbs_deb_leave(LBS_DEB_HOST);
1613 }
1614
1615 /**
1616  *  @brief This function sends Exit_PS command to firmware.
1617  *
1618  *  @param priv         A pointer to struct lbs_private structure
1619  *  @param wait_option  wait response or not
1620  *  @return             n/a
1621  */
1622 void lbs_ps_wakeup(struct lbs_private *priv, int wait_option)
1623 {
1624         __le32 Localpsmode;
1625
1626         lbs_deb_enter(LBS_DEB_HOST);
1627
1628         Localpsmode = cpu_to_le32(LBS802_11POWERMODECAM);
1629
1630         lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
1631                               CMD_SUBCMD_EXIT_PS,
1632                               wait_option, 0, &Localpsmode);
1633
1634         lbs_deb_leave(LBS_DEB_HOST);
1635 }
1636
1637 /**
1638  *  @brief This function checks condition and prepares to
1639  *  send sleep confirm command to firmware if ok.
1640  *
1641  *  @param priv         A pointer to struct lbs_private structure
1642  *  @param psmode       Power Saving mode
1643  *  @return             n/a
1644  */
1645 void lbs_ps_confirm_sleep(struct lbs_private *priv)
1646 {
1647         unsigned long flags =0;
1648         int allowed = 1;
1649
1650         lbs_deb_enter(LBS_DEB_HOST);
1651
1652         spin_lock_irqsave(&priv->driver_lock, flags);
1653         if (priv->dnld_sent) {
1654                 allowed = 0;
1655                 lbs_deb_host("dnld_sent was set\n");
1656         }
1657
1658         /* In-progress command? */
1659         if (priv->cur_cmd) {
1660                 allowed = 0;
1661                 lbs_deb_host("cur_cmd was set\n");
1662         }
1663
1664         /* Pending events or command responses? */
1665         if (__kfifo_len(priv->event_fifo) || priv->resp_len[priv->resp_idx]) {
1666                 allowed = 0;
1667                 lbs_deb_host("pending events or command responses\n");
1668         }
1669         spin_unlock_irqrestore(&priv->driver_lock, flags);
1670
1671         if (allowed) {
1672                 lbs_deb_host("sending lbs_ps_confirm_sleep\n");
1673                 lbs_send_confirmsleep(priv);
1674         } else {
1675                 lbs_deb_host("sleep confirm has been delayed\n");
1676         }
1677
1678         lbs_deb_leave(LBS_DEB_HOST);
1679 }
1680
1681
1682 /**
1683  * @brief Configures the transmission power control functionality.
1684  *
1685  * @param priv          A pointer to struct lbs_private structure
1686  * @param enable        Transmission power control enable
1687  * @param p0            Power level when link quality is good (dBm).
1688  * @param p1            Power level when link quality is fair (dBm).
1689  * @param p2            Power level when link quality is poor (dBm).
1690  * @param usesnr        Use Signal to Noise Ratio in TPC
1691  *
1692  * @return 0 on success
1693  */
1694 int lbs_set_tpc_cfg(struct lbs_private *priv, int enable, int8_t p0, int8_t p1,
1695                 int8_t p2, int usesnr)
1696 {
1697         struct cmd_ds_802_11_tpc_cfg cmd;
1698         int ret;
1699
1700         memset(&cmd, 0, sizeof(cmd));
1701         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1702         cmd.action = cpu_to_le16(CMD_ACT_SET);
1703         cmd.enable = !!enable;
1704         cmd.usesnr = !!usesnr;
1705         cmd.P0 = p0;
1706         cmd.P1 = p1;
1707         cmd.P2 = p2;
1708
1709         ret = lbs_cmd_with_response(priv, CMD_802_11_TPC_CFG, &cmd);
1710
1711         return ret;
1712 }
1713
1714 /**
1715  * @brief Configures the power adaptation settings.
1716  *
1717  * @param priv          A pointer to struct lbs_private structure
1718  * @param enable        Power adaptation enable
1719  * @param p0            Power level for 1, 2, 5.5 and 11 Mbps (dBm).
1720  * @param p1            Power level for 6, 9, 12, 18, 22, 24 and 36 Mbps (dBm).
1721  * @param p2            Power level for 48 and 54 Mbps (dBm).
1722  *
1723  * @return 0 on Success
1724  */
1725
1726 int lbs_set_power_adapt_cfg(struct lbs_private *priv, int enable, int8_t p0,
1727                 int8_t p1, int8_t p2)
1728 {
1729         struct cmd_ds_802_11_pa_cfg cmd;
1730         int ret;
1731
1732         memset(&cmd, 0, sizeof(cmd));
1733         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1734         cmd.action = cpu_to_le16(CMD_ACT_SET);
1735         cmd.enable = !!enable;
1736         cmd.P0 = p0;
1737         cmd.P1 = p1;
1738         cmd.P2 = p2;
1739
1740         ret = lbs_cmd_with_response(priv, CMD_802_11_PA_CFG , &cmd);
1741
1742         return ret;
1743 }
1744
1745
1746 struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv,
1747         uint16_t command, struct cmd_header *in_cmd, int in_cmd_size,
1748         int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1749         unsigned long callback_arg)
1750 {
1751         struct cmd_ctrl_node *cmdnode;
1752
1753         lbs_deb_enter(LBS_DEB_HOST);
1754
1755         if (priv->surpriseremoved) {
1756                 lbs_deb_host("PREP_CMD: card removed\n");
1757                 cmdnode = ERR_PTR(-ENOENT);
1758                 goto done;
1759         }
1760
1761         if (!lbs_is_cmd_allowed(priv)) {
1762                 cmdnode = ERR_PTR(-EBUSY);
1763                 goto done;
1764         }
1765
1766         cmdnode = lbs_get_cmd_ctrl_node(priv);
1767         if (cmdnode == NULL) {
1768                 lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
1769
1770                 /* Wake up main thread to execute next command */
1771                 wake_up_interruptible(&priv->waitq);
1772                 cmdnode = ERR_PTR(-ENOBUFS);
1773                 goto done;
1774         }
1775
1776         cmdnode->callback = callback;
1777         cmdnode->callback_arg = callback_arg;
1778
1779         /* Copy the incoming command to the buffer */
1780         memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size);
1781
1782         /* Set sequence number, clean result, move to buffer */
1783         priv->seqnum++;
1784         cmdnode->cmdbuf->command = cpu_to_le16(command);
1785         cmdnode->cmdbuf->size    = cpu_to_le16(in_cmd_size);
1786         cmdnode->cmdbuf->seqnum  = cpu_to_le16(priv->seqnum);
1787         cmdnode->cmdbuf->result  = 0;
1788
1789         lbs_deb_host("PREP_CMD: command 0x%04x\n", command);
1790
1791         cmdnode->cmdwaitqwoken = 0;
1792         lbs_queue_cmd(priv, cmdnode);
1793         wake_up_interruptible(&priv->waitq);
1794
1795  done:
1796         lbs_deb_leave_args(LBS_DEB_HOST, "ret %p", cmdnode);
1797         return cmdnode;
1798 }
1799
1800 void lbs_cmd_async(struct lbs_private *priv, uint16_t command,
1801         struct cmd_header *in_cmd, int in_cmd_size)
1802 {
1803         lbs_deb_enter(LBS_DEB_CMD);
1804         __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1805                 lbs_cmd_async_callback, 0);
1806         lbs_deb_leave(LBS_DEB_CMD);
1807 }
1808
1809 int __lbs_cmd(struct lbs_private *priv, uint16_t command,
1810               struct cmd_header *in_cmd, int in_cmd_size,
1811               int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1812               unsigned long callback_arg)
1813 {
1814         struct cmd_ctrl_node *cmdnode;
1815         unsigned long flags;
1816         int ret = 0;
1817
1818         lbs_deb_enter(LBS_DEB_HOST);
1819
1820         cmdnode = __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1821                                   callback, callback_arg);
1822         if (IS_ERR(cmdnode)) {
1823                 ret = PTR_ERR(cmdnode);
1824                 goto done;
1825         }
1826
1827         might_sleep();
1828         wait_event_interruptible(cmdnode->cmdwait_q, cmdnode->cmdwaitqwoken);
1829
1830         spin_lock_irqsave(&priv->driver_lock, flags);
1831         ret = cmdnode->result;
1832         if (ret)
1833                 lbs_pr_info("PREP_CMD: command 0x%04x failed: %d\n",
1834                             command, ret);
1835
1836         __lbs_cleanup_and_insert_cmd(priv, cmdnode);
1837         spin_unlock_irqrestore(&priv->driver_lock, flags);
1838
1839 done:
1840         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1841         return ret;
1842 }
1843 EXPORT_SYMBOL_GPL(__lbs_cmd);