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