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 <linux/kfifo.h>
   7 #include <linux/sched.h>
   8 #include <linux/slab.h>
   9 #include <linux/if_arp.h>
  10
  11 #include "decl.h"
  12 #include "cfg.h"
  13 #include "cmd.h"
  14
  15 #define CAL_NF(nf)              ((s32)(-(s32)(nf)))
  16 #define CAL_RSSI(snr, nf)       ((s32)((s32)(snr) + CAL_NF(nf)))
  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         case CMD_802_11_HOST_SLEEP_CFG:
  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         /* Clamp region code to 8-bit since FW spec indicates that it should
 148          * only ever be 8-bit, even though the field size is 16-bit.  Some firmware
 149          * returns non-zero high 8 bits here.
 150          *
 151          * Firmware version 4.0.102 used in CF8381 has region code shifted.  We
 152          * need to check for this problem and handle it properly.
 153          */
 154         if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V4)
 155                 priv->regioncode = (le16_to_cpu(cmd.regioncode) >> 8) & 0xFF;
 156         else
 157                 priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF;
 158
 159         for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) {
 160                 /* use the region code to search for the index */
 161                 if (priv->regioncode == lbs_region_code_to_index[i])
 162                         break;
 163         }
 164
 165         /* if it's unidentified region code, use the default (USA) */
 166         if (i >= MRVDRV_MAX_REGION_CODE) {
 167                 priv->regioncode = 0x10;
 168                 lbs_pr_info("unidentified region code; using the default (USA)\n");
 169         }
 170
 171         if (priv->current_addr[0] == 0xff)
 172                 memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN);
 173
 174         memcpy(priv->dev->dev_addr, priv->current_addr, ETH_ALEN);
 175         if (priv->mesh_dev)
 176                 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
 177
 178 out:
 179         lbs_deb_leave(LBS_DEB_CMD);
 180         return ret;
 181 }
 182
 183 static int lbs_ret_host_sleep_cfg(struct lbs_private *priv, unsigned long dummy,
 184                         struct cmd_header *resp)
 185 {
 186         lbs_deb_enter(LBS_DEB_CMD);
 187         if (priv->is_host_sleep_activated) {
 188                 priv->is_host_sleep_configured = 0;
 189                 if (priv->psstate == PS_STATE_FULL_POWER) {
 190                         priv->is_host_sleep_activated = 0;
 191                         wake_up_interruptible(&priv->host_sleep_q);
 192                 }
 193         } else {
 194                 priv->is_host_sleep_configured = 1;
 195         }
 196         lbs_deb_leave(LBS_DEB_CMD);
 197         return 0;
 198 }
 199
 200 int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria,
 201                 struct wol_config *p_wol_config)
 202 {
 203         struct cmd_ds_host_sleep cmd_config;
 204         int ret;
 205
 206         cmd_config.hdr.size = cpu_to_le16(sizeof(cmd_config));
 207         cmd_config.criteria = cpu_to_le32(criteria);
 208         cmd_config.gpio = priv->wol_gpio;
 209         cmd_config.gap = priv->wol_gap;
 210
 211         if (p_wol_config != NULL)
 212                 memcpy((uint8_t *)&cmd_config.wol_conf, (uint8_t *)p_wol_config,
 213                                 sizeof(struct wol_config));
 214         else
 215                 cmd_config.wol_conf.action = CMD_ACT_ACTION_NONE;
 216
 217         ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_CFG, &cmd_config.hdr,
 218                         le16_to_cpu(cmd_config.hdr.size),
 219                         lbs_ret_host_sleep_cfg, 0);
 220         if (!ret) {
 221                 if (p_wol_config)
 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                                 sizeof(struct cmd_header));
 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 static int lbs_ret_host_sleep_activate(struct lbs_private *priv,
 368                 unsigned long dummy,
 369                 struct cmd_header *cmd)
 370 {
 371         lbs_deb_enter(LBS_DEB_FW);
 372         priv->is_host_sleep_activated = 1;
 373         wake_up_interruptible(&priv->host_sleep_q);
 374         lbs_deb_leave(LBS_DEB_FW);
 375         return 0;
 376 }
 377
 378 int lbs_set_host_sleep(struct lbs_private *priv, int host_sleep)
 379 {
 380         struct cmd_header cmd;
 381         int ret = 0;
 382         uint32_t criteria = EHS_REMOVE_WAKEUP;
 383
 384         lbs_deb_enter(LBS_DEB_CMD);
 385
 386         if (host_sleep) {
 387                 if (priv->is_host_sleep_activated != 1) {
 388                         memset(&cmd, 0, sizeof(cmd));
 389                         ret = lbs_host_sleep_cfg(priv, priv->wol_criteria,
 390                                         (struct wol_config *)NULL);
 391                         if (ret) {
 392                                 lbs_pr_info("Host sleep configuration failed: "
 393                                                 "%d\n", ret);
 394                                 return ret;
 395                         }
 396                         if (priv->psstate == PS_STATE_FULL_POWER) {
 397                                 ret = __lbs_cmd(priv,
 398                                                 CMD_802_11_HOST_SLEEP_ACTIVATE,
 399                                                 &cmd,
 400                                                 sizeof(cmd),
 401                                                 lbs_ret_host_sleep_activate, 0);
 402                                 if (ret)
 403                                         lbs_pr_info("HOST_SLEEP_ACTIVATE "
 404                                                         "failed: %d\n", ret);
 405                         }
 406
 407                         if (!wait_event_interruptible_timeout(
 408                                                 priv->host_sleep_q,
 409                                                 priv->is_host_sleep_activated,
 410                                                 (10 * HZ))) {
 411                                 lbs_pr_err("host_sleep_q: timer expired\n");
 412                                 ret = -1;
 413                         }
 414                 } else {
 415                         lbs_pr_err("host sleep: already enabled\n");
 416                 }
 417         } else {
 418                 if (priv->is_host_sleep_activated)
 419                         ret = lbs_host_sleep_cfg(priv, criteria,
 420                                         (struct wol_config *)NULL);
 421         }
 422
 423         return ret;
 424 }
 425
 426 /**
 427  *  @brief Set an SNMP MIB value
 428  *
 429  *  @param priv         A pointer to struct lbs_private structure
 430  *  @param oid          The OID to set in the firmware
 431  *  @param val          Value to set the OID to
 432  *
 433  *  @return             0 on success, error on failure
 434  */
 435 int lbs_set_snmp_mib(struct lbs_private *priv, u32 oid, u16 val)
 436 {
 437         struct cmd_ds_802_11_snmp_mib cmd;
 438         int ret;
 439
 440         lbs_deb_enter(LBS_DEB_CMD);
 441
 442         memset(&cmd, 0, sizeof (cmd));
 443         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 444         cmd.action = cpu_to_le16(CMD_ACT_SET);
 445         cmd.oid = cpu_to_le16((u16) oid);
 446
 447         switch (oid) {
 448         case SNMP_MIB_OID_BSS_TYPE:
 449                 cmd.bufsize = cpu_to_le16(sizeof(u8));
 450                 cmd.value[0] = val;
 451                 break;
 452         case SNMP_MIB_OID_11D_ENABLE:
 453         case SNMP_MIB_OID_FRAG_THRESHOLD:
 454         case SNMP_MIB_OID_RTS_THRESHOLD:
 455         case SNMP_MIB_OID_SHORT_RETRY_LIMIT:
 456         case SNMP_MIB_OID_LONG_RETRY_LIMIT:
 457                 cmd.bufsize = cpu_to_le16(sizeof(u16));
 458                 *((__le16 *)(&cmd.value)) = cpu_to_le16(val);
 459                 break;
 460         default:
 461                 lbs_deb_cmd("SNMP_CMD: (set) unhandled OID 0x%x\n", oid);
 462                 ret = -EINVAL;
 463                 goto out;
 464         }
 465
 466         lbs_deb_cmd("SNMP_CMD: (set) oid 0x%x, oid size 0x%x, value 0x%x\n",
 467                     le16_to_cpu(cmd.oid), le16_to_cpu(cmd.bufsize), val);
 468
 469         ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
 470
 471 out:
 472         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 473         return ret;
 474 }
 475
 476 /**
 477  *  @brief Get an SNMP MIB value
 478  *
 479  *  @param priv         A pointer to struct lbs_private structure
 480  *  @param oid          The OID to retrieve from the firmware
 481  *  @param out_val      Location for the returned value
 482  *
 483  *  @return             0 on success, error on failure
 484  */
 485 int lbs_get_snmp_mib(struct lbs_private *priv, u32 oid, u16 *out_val)
 486 {
 487         struct cmd_ds_802_11_snmp_mib cmd;
 488         int ret;
 489
 490         lbs_deb_enter(LBS_DEB_CMD);
 491
 492         memset(&cmd, 0, sizeof (cmd));
 493         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 494         cmd.action = cpu_to_le16(CMD_ACT_GET);
 495         cmd.oid = cpu_to_le16(oid);
 496
 497         ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
 498         if (ret)
 499                 goto out;
 500
 501         switch (le16_to_cpu(cmd.bufsize)) {
 502         case sizeof(u8):
 503                 *out_val = cmd.value[0];
 504                 break;
 505         case sizeof(u16):
 506                 *out_val = le16_to_cpu(*((__le16 *)(&cmd.value)));
 507                 break;
 508         default:
 509                 lbs_deb_cmd("SNMP_CMD: (get) unhandled OID 0x%x size %d\n",
 510                             oid, le16_to_cpu(cmd.bufsize));
 511                 break;
 512         }
 513
 514 out:
 515         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 516         return ret;
 517 }
 518
 519 /**
 520  *  @brief Get the min, max, and current TX power
 521  *
 522  *  @param priv         A pointer to struct lbs_private structure
 523  *  @param curlevel     Current power level in dBm
 524  *  @param minlevel     Minimum supported power level in dBm (optional)
 525  *  @param maxlevel     Maximum supported power level in dBm (optional)
 526  *
 527  *  @return             0 on success, error on failure
 528  */
 529 int lbs_get_tx_power(struct lbs_private *priv, s16 *curlevel, s16 *minlevel,
 530                      s16 *maxlevel)
 531 {
 532         struct cmd_ds_802_11_rf_tx_power cmd;
 533         int ret;
 534
 535         lbs_deb_enter(LBS_DEB_CMD);
 536
 537         memset(&cmd, 0, sizeof(cmd));
 538         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 539         cmd.action = cpu_to_le16(CMD_ACT_GET);
 540
 541         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
 542         if (ret == 0) {
 543                 *curlevel = le16_to_cpu(cmd.curlevel);
 544                 if (minlevel)
 545                         *minlevel = cmd.minlevel;
 546                 if (maxlevel)
 547                         *maxlevel = cmd.maxlevel;
 548         }
 549
 550         lbs_deb_leave(LBS_DEB_CMD);
 551         return ret;
 552 }
 553
 554 /**
 555  *  @brief Set the TX power
 556  *
 557  *  @param priv         A pointer to struct lbs_private structure
 558  *  @param dbm          The desired power level in dBm
 559  *
 560  *  @return             0 on success, error on failure
 561  */
 562 int lbs_set_tx_power(struct lbs_private *priv, s16 dbm)
 563 {
 564         struct cmd_ds_802_11_rf_tx_power cmd;
 565         int ret;
 566
 567         lbs_deb_enter(LBS_DEB_CMD);
 568
 569         memset(&cmd, 0, sizeof(cmd));
 570         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 571         cmd.action = cpu_to_le16(CMD_ACT_SET);
 572         cmd.curlevel = cpu_to_le16(dbm);
 573
 574         lbs_deb_cmd("SET_RF_TX_POWER: %d dBm\n", dbm);
 575
 576         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
 577
 578         lbs_deb_leave(LBS_DEB_CMD);
 579         return ret;
 580 }
 581
 582 /**
 583  *  @brief Enable or disable monitor mode (only implemented on OLPC usb8388 FW)
 584  *
 585  *  @param priv        A pointer to struct lbs_private structure
 586  *  @param enable      1 to enable monitor mode, 0 to disable
 587  *
 588  *  @return            0 on success, error on failure
 589  */
 590 int lbs_set_monitor_mode(struct lbs_private *priv, int enable)
 591 {
 592         struct cmd_ds_802_11_monitor_mode cmd;
 593         int ret;
 594
 595         memset(&cmd, 0, sizeof(cmd));
 596         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 597         cmd.action = cpu_to_le16(CMD_ACT_SET);
 598         if (enable)
 599                 cmd.mode = cpu_to_le16(0x1);
 600
 601         lbs_deb_cmd("SET_MONITOR_MODE: %d\n", enable);
 602
 603         ret = lbs_cmd_with_response(priv, CMD_802_11_MONITOR_MODE, &cmd);
 604         if (ret == 0) {
 605                 priv->dev->type = enable ? ARPHRD_IEEE80211_RADIOTAP :
 606                                                 ARPHRD_ETHER;
 607         }
 608
 609         lbs_deb_leave(LBS_DEB_CMD);
 610         return ret;
 611 }
 612
 613 /**
 614  *  @brief Get the radio channel
 615  *
 616  *  @param priv         A pointer to struct lbs_private structure
 617  *
 618  *  @return             The channel on success, error on failure
 619  */
 620 static int lbs_get_channel(struct lbs_private *priv)
 621 {
 622         struct cmd_ds_802_11_rf_channel cmd;
 623         int ret = 0;
 624
 625         lbs_deb_enter(LBS_DEB_CMD);
 626
 627         memset(&cmd, 0, sizeof(cmd));
 628         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 629         cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_GET);
 630
 631         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
 632         if (ret)
 633                 goto out;
 634
 635         ret = le16_to_cpu(cmd.channel);
 636         lbs_deb_cmd("current radio channel is %d\n", ret);
 637
 638 out:
 639         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 640         return ret;
 641 }
 642
 643 int lbs_update_channel(struct lbs_private *priv)
 644 {
 645         int ret;
 646
 647         /* the channel in f/w could be out of sync; get the current channel */
 648         lbs_deb_enter(LBS_DEB_ASSOC);
 649
 650         ret = lbs_get_channel(priv);
 651         if (ret > 0) {
 652                 priv->channel = ret;
 653                 ret = 0;
 654         }
 655         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 656         return ret;
 657 }
 658
 659 /**
 660  *  @brief Set the radio channel
 661  *
 662  *  @param priv         A pointer to struct lbs_private structure
 663  *  @param channel      The desired channel, or 0 to clear a locked channel
 664  *
 665  *  @return             0 on success, error on failure
 666  */
 667 int lbs_set_channel(struct lbs_private *priv, u8 channel)
 668 {
 669         struct cmd_ds_802_11_rf_channel cmd;
 670 #ifdef DEBUG
 671         u8 old_channel = priv->channel;
 672 #endif
 673         int ret = 0;
 674
 675         lbs_deb_enter(LBS_DEB_CMD);
 676
 677         memset(&cmd, 0, sizeof(cmd));
 678         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 679         cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET);
 680         cmd.channel = cpu_to_le16(channel);
 681
 682         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
 683         if (ret)
 684                 goto out;
 685
 686         priv->channel = (uint8_t) le16_to_cpu(cmd.channel);
 687         lbs_deb_cmd("channel switch from %d to %d\n", old_channel,
 688                 priv->channel);
 689
 690 out:
 691         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 692         return ret;
 693 }
 694
 695 /**
 696  *  @brief Get current RSSI and noise floor
 697  *
 698  *  @param priv         A pointer to struct lbs_private structure
 699  *  @param rssi         On successful return, signal level in mBm
 700  *
 701  *  @return             The channel on success, error on failure
 702  */
 703 int lbs_get_rssi(struct lbs_private *priv, s8 *rssi, s8 *nf)
 704 {
 705         struct cmd_ds_802_11_rssi cmd;
 706         int ret = 0;
 707
 708         lbs_deb_enter(LBS_DEB_CMD);
 709
 710         BUG_ON(rssi == NULL);
 711         BUG_ON(nf == NULL);
 712
 713         memset(&cmd, 0, sizeof(cmd));
 714         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 715         /* Average SNR over last 8 beacons */
 716         cmd.n_or_snr = cpu_to_le16(8);
 717
 718         ret = lbs_cmd_with_response(priv, CMD_802_11_RSSI, &cmd);
 719         if (ret == 0) {
 720                 *nf = CAL_NF(le16_to_cpu(cmd.nf));
 721                 *rssi = CAL_RSSI(le16_to_cpu(cmd.n_or_snr), le16_to_cpu(cmd.nf));
 722         }
 723
 724         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 725         return ret;
 726 }
 727
 728 /**
 729  *  @brief Send regulatory and 802.11d domain information to the firmware
 730  *
 731  *  @param priv         pointer to struct lbs_private
 732  *  @param request      cfg80211 regulatory request structure
 733  *  @param bands        the device's supported bands and channels
 734  *
 735  *  @return             0 on success, error code on failure
 736 */
 737 int lbs_set_11d_domain_info(struct lbs_private *priv,
 738                             struct regulatory_request *request,
 739                             struct ieee80211_supported_band **bands)
 740 {
 741         struct cmd_ds_802_11d_domain_info cmd;
 742         struct mrvl_ie_domain_param_set *domain = &cmd.domain;
 743         struct ieee80211_country_ie_triplet *t;
 744         enum ieee80211_band band;
 745         struct ieee80211_channel *ch;
 746         u8 num_triplet = 0;
 747         u8 num_parsed_chan = 0;
 748         u8 first_channel = 0, next_chan = 0, max_pwr = 0;
 749         u8 i, flag = 0;
 750         size_t triplet_size;
 751         int ret;
 752
 753         lbs_deb_enter(LBS_DEB_11D);
 754
 755         memset(&cmd, 0, sizeof(cmd));
 756         cmd.action = cpu_to_le16(CMD_ACT_SET);
 757
 758         lbs_deb_11d("Setting country code '%c%c'\n",
 759                     request->alpha2[0], request->alpha2[1]);
 760
 761         domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
 762
 763         /* Set country code */
 764         domain->country_code[0] = request->alpha2[0];
 765         domain->country_code[1] = request->alpha2[1];
 766         domain->country_code[2] = ' ';
 767
 768         /* Now set up the channel triplets; firmware is somewhat picky here
 769          * and doesn't validate channel numbers and spans; hence it would
 770          * interpret a triplet of (36, 4, 20) as channels 36, 37, 38, 39.  Since
 771          * the last 3 aren't valid channels, the driver is responsible for
 772          * splitting that up into 4 triplet pairs of (36, 1, 20) + (40, 1, 20)
 773          * etc.
 774          */
 775         for (band = 0;
 776              (band < IEEE80211_NUM_BANDS) && (num_triplet < MAX_11D_TRIPLETS);
 777              band++) {
 778
 779                 if (!bands[band])
 780                         continue;
 781
 782                 for (i = 0;
 783                      (i < bands[band]->n_channels) && (num_triplet < MAX_11D_TRIPLETS);
 784                      i++) {
 785                         ch = &bands[band]->channels[i];
 786                         if (ch->flags & IEEE80211_CHAN_DISABLED)
 787                                 continue;
 788
 789                         if (!flag) {
 790                                 flag = 1;
 791                                 next_chan = first_channel = (u32) ch->hw_value;
 792                                 max_pwr = ch->max_power;
 793                                 num_parsed_chan = 1;
 794                                 continue;
 795                         }
 796
 797                         if ((ch->hw_value == next_chan + 1) &&
 798                                         (ch->max_power == max_pwr)) {
 799                                 /* Consolidate adjacent channels */
 800                                 next_chan++;
 801                                 num_parsed_chan++;
 802                         } else {
 803                                 /* Add this triplet */
 804                                 lbs_deb_11d("11D triplet (%d, %d, %d)\n",
 805                                         first_channel, num_parsed_chan,
 806                                         max_pwr);
 807                                 t = &domain->triplet[num_triplet];
 808                                 t->chans.first_channel = first_channel;
 809                                 t->chans.num_channels = num_parsed_chan;
 810                                 t->chans.max_power = max_pwr;
 811                                 num_triplet++;
 812                                 flag = 0;
 813                         }
 814                 }
 815
 816                 if (flag) {
 817                         /* Add last triplet */
 818                         lbs_deb_11d("11D triplet (%d, %d, %d)\n", first_channel,
 819                                 num_parsed_chan, max_pwr);
 820                         t = &domain->triplet[num_triplet];
 821                         t->chans.first_channel = first_channel;
 822                         t->chans.num_channels = num_parsed_chan;
 823                         t->chans.max_power = max_pwr;
 824                         num_triplet++;
 825                 }
 826         }
 827
 828         lbs_deb_11d("# triplets %d\n", num_triplet);
 829
 830         /* Set command header sizes */
 831         triplet_size = num_triplet * sizeof(struct ieee80211_country_ie_triplet);
 832         domain->header.len = cpu_to_le16(sizeof(domain->country_code) +
 833                                         triplet_size);
 834
 835         lbs_deb_hex(LBS_DEB_11D, "802.11D domain param set",
 836                         (u8 *) &cmd.domain.country_code,
 837                         le16_to_cpu(domain->header.len));
 838
 839         cmd.hdr.size = cpu_to_le16(sizeof(cmd.hdr) +
 840                                    sizeof(cmd.action) +
 841                                    sizeof(cmd.domain.header) +
 842                                    sizeof(cmd.domain.country_code) +
 843                                    triplet_size);
 844
 845         ret = lbs_cmd_with_response(priv, CMD_802_11D_DOMAIN_INFO, &cmd);
 846
 847         lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
 848         return ret;
 849 }
 850
 851 /**
 852  *  @brief Read a MAC, Baseband, or RF register
 853  *
 854  *  @param priv         pointer to struct lbs_private
 855  *  @param cmd          register command, one of CMD_MAC_REG_ACCESS,
 856  *                        CMD_BBP_REG_ACCESS, or CMD_RF_REG_ACCESS
 857  *  @param offset       byte offset of the register to get
 858  *  @param value        on success, the value of the register at 'offset'
 859  *
 860  *  @return             0 on success, error code on failure
 861 */
 862 int lbs_get_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 *value)
 863 {
 864         struct cmd_ds_reg_access cmd;
 865         int ret = 0;
 866
 867         lbs_deb_enter(LBS_DEB_CMD);
 868
 869         BUG_ON(value == NULL);
 870
 871         memset(&cmd, 0, sizeof(cmd));
 872         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 873         cmd.action = cpu_to_le16(CMD_ACT_GET);
 874
 875         if (reg != CMD_MAC_REG_ACCESS &&
 876             reg != CMD_BBP_REG_ACCESS &&
 877             reg != CMD_RF_REG_ACCESS) {
 878                 ret = -EINVAL;
 879                 goto out;
 880         }
 881
 882         ret = lbs_cmd_with_response(priv, reg, &cmd);
 883         if (ret) {
 884                 if (reg == CMD_BBP_REG_ACCESS || reg == CMD_RF_REG_ACCESS)
 885                         *value = cmd.value.bbp_rf;
 886                 else if (reg == CMD_MAC_REG_ACCESS)
 887                         *value = le32_to_cpu(cmd.value.mac);
 888         }
 889
 890 out:
 891         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 892         return ret;
 893 }
 894
 895 /**
 896  *  @brief Write a MAC, Baseband, or RF register
 897  *
 898  *  @param priv         pointer to struct lbs_private
 899  *  @param cmd          register command, one of CMD_MAC_REG_ACCESS,
 900  *                        CMD_BBP_REG_ACCESS, or CMD_RF_REG_ACCESS
 901  *  @param offset       byte offset of the register to set
 902  *  @param value        the value to write to the register at 'offset'
 903  *
 904  *  @return             0 on success, error code on failure
 905 */
 906 int lbs_set_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 value)
 907 {
 908         struct cmd_ds_reg_access cmd;
 909         int ret = 0;
 910
 911         lbs_deb_enter(LBS_DEB_CMD);
 912
 913         memset(&cmd, 0, sizeof(cmd));
 914         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 915         cmd.action = cpu_to_le16(CMD_ACT_SET);
 916
 917         if (reg == CMD_BBP_REG_ACCESS || reg == CMD_RF_REG_ACCESS)
 918                 cmd.value.bbp_rf = (u8) (value & 0xFF);
 919         else if (reg == CMD_MAC_REG_ACCESS)
 920                 cmd.value.mac = cpu_to_le32(value);
 921         else {
 922                 ret = -EINVAL;
 923                 goto out;
 924         }
 925
 926         ret = lbs_cmd_with_response(priv, reg, &cmd);
 927
 928 out:
 929         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 930         return ret;
 931 }
 932
 933 static void lbs_queue_cmd(struct lbs_private *priv,
 934                           struct cmd_ctrl_node *cmdnode)
 935 {
 936         unsigned long flags;
 937         int addtail = 1;
 938
 939         lbs_deb_enter(LBS_DEB_HOST);
 940
 941         if (!cmdnode) {
 942                 lbs_deb_host("QUEUE_CMD: cmdnode is NULL\n");
 943                 goto done;
 944         }
 945         if (!cmdnode->cmdbuf->size) {
 946                 lbs_deb_host("DNLD_CMD: cmd size is zero\n");
 947                 goto done;
 948         }
 949         cmdnode->result = 0;
 950
 951         /* Exit_PS command needs to be queued in the header always. */
 952         if (le16_to_cpu(cmdnode->cmdbuf->command) == CMD_802_11_PS_MODE) {
 953                 struct cmd_ds_802_11_ps_mode *psm = (void *) &cmdnode->cmdbuf[1];
 954
 955                 if (psm->action == cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
 956                         if (priv->psstate != PS_STATE_FULL_POWER)
 957                                 addtail = 0;
 958                 }
 959         }
 960
 961         if (le16_to_cpu(cmdnode->cmdbuf->command) ==
 962                         CMD_802_11_WAKEUP_CONFIRM)
 963                 addtail = 0;
 964
 965         spin_lock_irqsave(&priv->driver_lock, flags);
 966
 967         if (addtail)
 968                 list_add_tail(&cmdnode->list, &priv->cmdpendingq);
 969         else
 970                 list_add(&cmdnode->list, &priv->cmdpendingq);
 971
 972         spin_unlock_irqrestore(&priv->driver_lock, flags);
 973
 974         lbs_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n",
 975                      le16_to_cpu(cmdnode->cmdbuf->command));
 976
 977 done:
 978         lbs_deb_leave(LBS_DEB_HOST);
 979 }
 980
 981 static void lbs_submit_command(struct lbs_private *priv,
 982                                struct cmd_ctrl_node *cmdnode)
 983 {
 984         unsigned long flags;
 985         struct cmd_header *cmd;
 986         uint16_t cmdsize;
 987         uint16_t command;
 988         int timeo = 3 * HZ;
 989         int ret;
 990
 991         lbs_deb_enter(LBS_DEB_HOST);
 992
 993         cmd = cmdnode->cmdbuf;
 994
 995         spin_lock_irqsave(&priv->driver_lock, flags);
 996         priv->cur_cmd = cmdnode;
 997         priv->cur_cmd_retcode = 0;
 998         spin_unlock_irqrestore(&priv->driver_lock, flags);
 999
1000         cmdsize = le16_to_cpu(cmd->size);
1001         command = le16_to_cpu(cmd->command);
1002
1003         /* These commands take longer */
1004         if (command == CMD_802_11_SCAN || command == CMD_802_11_ASSOCIATE)
1005                 timeo = 5 * HZ;
1006
1007         lbs_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n",
1008                      command, le16_to_cpu(cmd->seqnum), cmdsize);
1009         lbs_deb_hex(LBS_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize);
1010
1011         ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize);
1012
1013         if (ret) {
1014                 lbs_pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret);
1015                 /* Let the timer kick in and retry, and potentially reset
1016                    the whole thing if the condition persists */
1017                 timeo = HZ/4;
1018         }
1019
1020         if (command == CMD_802_11_DEEP_SLEEP) {
1021                 if (priv->is_auto_deep_sleep_enabled) {
1022                         priv->wakeup_dev_required = 1;
1023                         priv->dnld_sent = 0;
1024                 }
1025                 priv->is_deep_sleep = 1;
1026                 lbs_complete_command(priv, cmdnode, 0);
1027         } else {
1028                 /* Setup the timer after transmit command */
1029                 mod_timer(&priv->command_timer, jiffies + timeo);
1030         }
1031
1032         lbs_deb_leave(LBS_DEB_HOST);
1033 }
1034
1035 /**
1036  *  This function inserts command node to cmdfreeq
1037  *  after cleans it. Requires priv->driver_lock held.
1038  */
1039 static void __lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
1040                                          struct cmd_ctrl_node *cmdnode)
1041 {
1042         lbs_deb_enter(LBS_DEB_HOST);
1043
1044         if (!cmdnode)
1045                 goto out;
1046
1047         cmdnode->callback = NULL;
1048         cmdnode->callback_arg = 0;
1049
1050         memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE);
1051
1052         list_add_tail(&cmdnode->list, &priv->cmdfreeq);
1053  out:
1054         lbs_deb_leave(LBS_DEB_HOST);
1055 }
1056
1057 static void lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
1058         struct cmd_ctrl_node *ptempcmd)
1059 {
1060         unsigned long flags;
1061
1062         spin_lock_irqsave(&priv->driver_lock, flags);
1063         __lbs_cleanup_and_insert_cmd(priv, ptempcmd);
1064         spin_unlock_irqrestore(&priv->driver_lock, flags);
1065 }
1066
1067 void lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd,
1068                           int result)
1069 {
1070         if (cmd == priv->cur_cmd)
1071                 priv->cur_cmd_retcode = result;
1072
1073         cmd->result = result;
1074         cmd->cmdwaitqwoken = 1;
1075         wake_up_interruptible(&cmd->cmdwait_q);
1076
1077         if (!cmd->callback || cmd->callback == lbs_cmd_async_callback)
1078                 __lbs_cleanup_and_insert_cmd(priv, cmd);
1079         priv->cur_cmd = NULL;
1080 }
1081
1082 int lbs_set_radio(struct lbs_private *priv, u8 preamble, u8 radio_on)
1083 {
1084         struct cmd_ds_802_11_radio_control cmd;
1085         int ret = -EINVAL;
1086
1087         lbs_deb_enter(LBS_DEB_CMD);
1088
1089         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1090         cmd.action = cpu_to_le16(CMD_ACT_SET);
1091
1092         /* Only v8 and below support setting the preamble */
1093         if (priv->fwrelease < 0x09000000) {
1094                 switch (preamble) {
1095                 case RADIO_PREAMBLE_SHORT:
1096                 case RADIO_PREAMBLE_AUTO:
1097                 case RADIO_PREAMBLE_LONG:
1098                         cmd.control = cpu_to_le16(preamble);
1099                         break;
1100                 default:
1101                         goto out;
1102                 }
1103         }
1104
1105         if (radio_on)
1106                 cmd.control |= cpu_to_le16(0x1);
1107         else {
1108                 cmd.control &= cpu_to_le16(~0x1);
1109                 priv->txpower_cur = 0;
1110         }
1111
1112         lbs_deb_cmd("RADIO_CONTROL: radio %s, preamble %d\n",
1113                     radio_on ? "ON" : "OFF", preamble);
1114
1115         priv->radio_on = radio_on;
1116
1117         ret = lbs_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd);
1118
1119 out:
1120         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
1121         return ret;
1122 }
1123
1124 void lbs_set_mac_control(struct lbs_private *priv)
1125 {
1126         struct cmd_ds_mac_control cmd;
1127
1128         lbs_deb_enter(LBS_DEB_CMD);
1129
1130         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1131         cmd.action = cpu_to_le16(priv->mac_control);
1132         cmd.reserved = 0;
1133
1134         lbs_cmd_async(priv, CMD_MAC_CONTROL, &cmd.hdr, sizeof(cmd));
1135
1136         lbs_deb_leave(LBS_DEB_CMD);
1137 }
1138
1139 /**
1140  *  @brief This function prepare the command before send to firmware.
1141  *
1142  *  @param priv         A pointer to struct lbs_private structure
1143  *  @param cmd_no       command number
1144  *  @param cmd_action   command action: GET or SET
1145  *  @param wait_option  wait option: wait response or not
1146  *  @param cmd_oid      cmd oid: treated as sub command
1147  *  @param pdata_buf    A pointer to informaion buffer
1148  *  @return             0 or -1
1149  */
1150 int lbs_prepare_and_send_command(struct lbs_private *priv,
1151                           u16 cmd_no,
1152                           u16 cmd_action,
1153                           u16 wait_option, u32 cmd_oid, void *pdata_buf)
1154 {
1155         int ret = 0;
1156         struct cmd_ctrl_node *cmdnode;
1157         struct cmd_ds_command *cmdptr;
1158         unsigned long flags;
1159
1160         lbs_deb_enter(LBS_DEB_HOST);
1161
1162         if (!priv) {
1163                 lbs_deb_host("PREP_CMD: priv is NULL\n");
1164                 ret = -1;
1165                 goto done;
1166         }
1167
1168         if (priv->surpriseremoved) {
1169                 lbs_deb_host("PREP_CMD: card removed\n");
1170                 ret = -1;
1171                 goto done;
1172         }
1173
1174         if (!lbs_is_cmd_allowed(priv)) {
1175                 ret = -EBUSY;
1176                 goto done;
1177         }
1178
1179         cmdnode = lbs_get_cmd_ctrl_node(priv);
1180
1181         if (cmdnode == NULL) {
1182                 lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
1183
1184                 /* Wake up main thread to execute next command */
1185                 wake_up_interruptible(&priv->waitq);
1186                 ret = -1;
1187                 goto done;
1188         }
1189
1190         cmdnode->callback = NULL;
1191         cmdnode->callback_arg = (unsigned long)pdata_buf;
1192
1193         cmdptr = (struct cmd_ds_command *)cmdnode->cmdbuf;
1194
1195         lbs_deb_host("PREP_CMD: command 0x%04x\n", cmd_no);
1196
1197         /* Set sequence number, command and INT option */
1198         priv->seqnum++;
1199         cmdptr->seqnum = cpu_to_le16(priv->seqnum);
1200
1201         cmdptr->command = cpu_to_le16(cmd_no);
1202         cmdptr->result = 0;
1203
1204         switch (cmd_no) {
1205         case CMD_802_11_PS_MODE:
1206                 ret = lbs_cmd_802_11_ps_mode(cmdptr, cmd_action);
1207                 break;
1208
1209 #ifdef CONFIG_LIBERTAS_MESH
1210
1211         case CMD_FWT_ACCESS:
1212                 ret = lbs_cmd_fwt_access(cmdptr, cmd_action, pdata_buf);
1213                 break;
1214
1215 #endif
1216
1217         case CMD_802_11_DEEP_SLEEP:
1218                 cmdptr->command = cpu_to_le16(CMD_802_11_DEEP_SLEEP);
1219                 cmdptr->size = cpu_to_le16(sizeof(struct cmd_header));
1220                 break;
1221         default:
1222                 lbs_pr_err("PREP_CMD: unknown command 0x%04x\n", cmd_no);
1223                 ret = -1;
1224                 break;
1225         }
1226
1227         /* return error, since the command preparation failed */
1228         if (ret != 0) {
1229                 lbs_deb_host("PREP_CMD: command preparation failed\n");
1230                 lbs_cleanup_and_insert_cmd(priv, cmdnode);
1231                 ret = -1;
1232                 goto done;
1233         }
1234
1235         cmdnode->cmdwaitqwoken = 0;
1236
1237         lbs_queue_cmd(priv, cmdnode);
1238         wake_up_interruptible(&priv->waitq);
1239
1240         if (wait_option & CMD_OPTION_WAITFORRSP) {
1241                 lbs_deb_host("PREP_CMD: wait for response\n");
1242                 might_sleep();
1243                 wait_event_interruptible(cmdnode->cmdwait_q,
1244                                          cmdnode->cmdwaitqwoken);
1245         }
1246
1247         spin_lock_irqsave(&priv->driver_lock, flags);
1248         if (priv->cur_cmd_retcode) {
1249                 lbs_deb_host("PREP_CMD: command failed with return code %d\n",
1250                        priv->cur_cmd_retcode);
1251                 priv->cur_cmd_retcode = 0;
1252                 ret = -1;
1253         }
1254         spin_unlock_irqrestore(&priv->driver_lock, flags);
1255
1256 done:
1257         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1258         return ret;
1259 }
1260
1261 /**
1262  *  @brief This function allocates the command buffer and link
1263  *  it to command free queue.
1264  *
1265  *  @param priv         A pointer to struct lbs_private structure
1266  *  @return             0 or -1
1267  */
1268 int lbs_allocate_cmd_buffer(struct lbs_private *priv)
1269 {
1270         int ret = 0;
1271         u32 bufsize;
1272         u32 i;
1273         struct cmd_ctrl_node *cmdarray;
1274
1275         lbs_deb_enter(LBS_DEB_HOST);
1276
1277         /* Allocate and initialize the command array */
1278         bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS;
1279         if (!(cmdarray = kzalloc(bufsize, GFP_KERNEL))) {
1280                 lbs_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n");
1281                 ret = -1;
1282                 goto done;
1283         }
1284         priv->cmd_array = cmdarray;
1285
1286         /* Allocate and initialize each command buffer in the command array */
1287         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1288                 cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL);
1289                 if (!cmdarray[i].cmdbuf) {
1290                         lbs_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n");
1291                         ret = -1;
1292                         goto done;
1293                 }
1294         }
1295
1296         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1297                 init_waitqueue_head(&cmdarray[i].cmdwait_q);
1298                 lbs_cleanup_and_insert_cmd(priv, &cmdarray[i]);
1299         }
1300         ret = 0;
1301
1302 done:
1303         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1304         return ret;
1305 }
1306
1307 /**
1308  *  @brief This function frees the command buffer.
1309  *
1310  *  @param priv         A pointer to struct lbs_private structure
1311  *  @return             0 or -1
1312  */
1313 int lbs_free_cmd_buffer(struct lbs_private *priv)
1314 {
1315         struct cmd_ctrl_node *cmdarray;
1316         unsigned int i;
1317
1318         lbs_deb_enter(LBS_DEB_HOST);
1319
1320         /* need to check if cmd array is allocated or not */
1321         if (priv->cmd_array == NULL) {
1322                 lbs_deb_host("FREE_CMD_BUF: cmd_array is NULL\n");
1323                 goto done;
1324         }
1325
1326         cmdarray = priv->cmd_array;
1327
1328         /* Release shared memory buffers */
1329         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1330                 if (cmdarray[i].cmdbuf) {
1331                         kfree(cmdarray[i].cmdbuf);
1332                         cmdarray[i].cmdbuf = NULL;
1333                 }
1334         }
1335
1336         /* Release cmd_ctrl_node */
1337         if (priv->cmd_array) {
1338                 kfree(priv->cmd_array);
1339                 priv->cmd_array = NULL;
1340         }
1341
1342 done:
1343         lbs_deb_leave(LBS_DEB_HOST);
1344         return 0;
1345 }
1346
1347 /**
1348  *  @brief This function gets a free command node if available in
1349  *  command free queue.
1350  *
1351  *  @param priv         A pointer to struct lbs_private structure
1352  *  @return cmd_ctrl_node A pointer to cmd_ctrl_node structure or NULL
1353  */
1354 static struct cmd_ctrl_node *lbs_get_cmd_ctrl_node(struct lbs_private *priv)
1355 {
1356         struct cmd_ctrl_node *tempnode;
1357         unsigned long flags;
1358
1359         lbs_deb_enter(LBS_DEB_HOST);
1360
1361         if (!priv)
1362                 return NULL;
1363
1364         spin_lock_irqsave(&priv->driver_lock, flags);
1365
1366         if (!list_empty(&priv->cmdfreeq)) {
1367                 tempnode = list_first_entry(&priv->cmdfreeq,
1368                                             struct cmd_ctrl_node, list);
1369                 list_del(&tempnode->list);
1370         } else {
1371                 lbs_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n");
1372                 tempnode = NULL;
1373         }
1374
1375         spin_unlock_irqrestore(&priv->driver_lock, flags);
1376
1377         lbs_deb_leave(LBS_DEB_HOST);
1378         return tempnode;
1379 }
1380
1381 /**
1382  *  @brief This function executes next command in command
1383  *  pending queue. It will put firmware back to PS mode
1384  *  if applicable.
1385  *
1386  *  @param priv     A pointer to struct lbs_private structure
1387  *  @return        0 or -1
1388  */
1389 int lbs_execute_next_command(struct lbs_private *priv)
1390 {
1391         struct cmd_ctrl_node *cmdnode = NULL;
1392         struct cmd_header *cmd;
1393         unsigned long flags;
1394         int ret = 0;
1395
1396         /* Debug group is LBS_DEB_THREAD and not LBS_DEB_HOST, because the
1397          * only caller to us is lbs_thread() and we get even when a
1398          * data packet is received */
1399         lbs_deb_enter(LBS_DEB_THREAD);
1400
1401         spin_lock_irqsave(&priv->driver_lock, flags);
1402
1403         if (priv->cur_cmd) {
1404                 lbs_pr_alert( "EXEC_NEXT_CMD: already processing command!\n");
1405                 spin_unlock_irqrestore(&priv->driver_lock, flags);
1406                 ret = -1;
1407                 goto done;
1408         }
1409
1410         if (!list_empty(&priv->cmdpendingq)) {
1411                 cmdnode = list_first_entry(&priv->cmdpendingq,
1412                                            struct cmd_ctrl_node, list);
1413         }
1414
1415         spin_unlock_irqrestore(&priv->driver_lock, flags);
1416
1417         if (cmdnode) {
1418                 cmd = cmdnode->cmdbuf;
1419
1420                 if (is_command_allowed_in_ps(le16_to_cpu(cmd->command))) {
1421                         if ((priv->psstate == PS_STATE_SLEEP) ||
1422                             (priv->psstate == PS_STATE_PRE_SLEEP)) {
1423                                 lbs_deb_host(
1424                                        "EXEC_NEXT_CMD: cannot send cmd 0x%04x in psstate %d\n",
1425                                        le16_to_cpu(cmd->command),
1426                                        priv->psstate);
1427                                 ret = -1;
1428                                 goto done;
1429                         }
1430                         lbs_deb_host("EXEC_NEXT_CMD: OK to send command "
1431                                      "0x%04x in psstate %d\n",
1432                                      le16_to_cpu(cmd->command), priv->psstate);
1433                 } else if (priv->psstate != PS_STATE_FULL_POWER) {
1434                         /*
1435                          * 1. Non-PS command:
1436                          * Queue it. set needtowakeup to TRUE if current state
1437                          * is SLEEP, otherwise call lbs_ps_wakeup to send Exit_PS.
1438                          * 2. PS command but not Exit_PS:
1439                          * Ignore it.
1440                          * 3. PS command Exit_PS:
1441                          * Set needtowakeup to TRUE if current state is SLEEP,
1442                          * otherwise send this command down to firmware
1443                          * immediately.
1444                          */
1445                         if (cmd->command != cpu_to_le16(CMD_802_11_PS_MODE)) {
1446                                 /*  Prepare to send Exit PS,
1447                                  *  this non PS command will be sent later */
1448                                 if ((priv->psstate == PS_STATE_SLEEP)
1449                                     || (priv->psstate == PS_STATE_PRE_SLEEP)
1450                                     ) {
1451                                         /* w/ new scheme, it will not reach here.
1452                                            since it is blocked in main_thread. */
1453                                         priv->needtowakeup = 1;
1454                                 } else
1455                                         lbs_ps_wakeup(priv, 0);
1456
1457                                 ret = 0;
1458                                 goto done;
1459                         } else {
1460                                 /*
1461                                  * PS command. Ignore it if it is not Exit_PS.
1462                                  * otherwise send it down immediately.
1463                                  */
1464                                 struct cmd_ds_802_11_ps_mode *psm = (void *)&cmd[1];
1465
1466                                 lbs_deb_host(
1467                                        "EXEC_NEXT_CMD: PS cmd, action 0x%02x\n",
1468                                        psm->action);
1469                                 if (psm->action !=
1470                                     cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
1471                                         lbs_deb_host(
1472                                                "EXEC_NEXT_CMD: ignore ENTER_PS cmd\n");
1473                                         list_del(&cmdnode->list);
1474                                         spin_lock_irqsave(&priv->driver_lock, flags);
1475                                         lbs_complete_command(priv, cmdnode, 0);
1476                                         spin_unlock_irqrestore(&priv->driver_lock, flags);
1477
1478                                         ret = 0;
1479                                         goto done;
1480                                 }
1481
1482                                 if ((priv->psstate == PS_STATE_SLEEP) ||
1483                                     (priv->psstate == PS_STATE_PRE_SLEEP)) {
1484                                         lbs_deb_host(
1485                                                "EXEC_NEXT_CMD: ignore EXIT_PS cmd in sleep\n");
1486                                         list_del(&cmdnode->list);
1487                                         spin_lock_irqsave(&priv->driver_lock, flags);
1488                                         lbs_complete_command(priv, cmdnode, 0);
1489                                         spin_unlock_irqrestore(&priv->driver_lock, flags);
1490                                         priv->needtowakeup = 1;
1491
1492                                         ret = 0;
1493                                         goto done;
1494                                 }
1495
1496                                 lbs_deb_host(
1497                                        "EXEC_NEXT_CMD: sending EXIT_PS\n");
1498                         }
1499                 }
1500                 list_del(&cmdnode->list);
1501                 lbs_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n",
1502                             le16_to_cpu(cmd->command));
1503                 lbs_submit_command(priv, cmdnode);
1504         } else {
1505                 /*
1506                  * check if in power save mode, if yes, put the device back
1507                  * to PS mode
1508                  */
1509 #ifdef TODO
1510                 /*
1511                  * This was the old code for libertas+wext. Someone that
1512                  * understands this beast should re-code it in a sane way.
1513                  *
1514                  * I actually don't understand why this is related to WPA
1515                  * and to connection status, shouldn't powering should be
1516                  * independ of such things?
1517                  */
1518                 if ((priv->psmode != LBS802_11POWERMODECAM) &&
1519                     (priv->psstate == PS_STATE_FULL_POWER) &&
1520                     ((priv->connect_status == LBS_CONNECTED) ||
1521                     lbs_mesh_connected(priv))) {
1522                         if (priv->secinfo.WPAenabled ||
1523                             priv->secinfo.WPA2enabled) {
1524                                 /* check for valid WPA group keys */
1525                                 if (priv->wpa_mcast_key.len ||
1526                                     priv->wpa_unicast_key.len) {
1527                                         lbs_deb_host(
1528                                                "EXEC_NEXT_CMD: WPA enabled and GTK_SET"
1529                                                " go back to PS_SLEEP");
1530                                         lbs_ps_sleep(priv, 0);
1531                                 }
1532                         } else {
1533                                 lbs_deb_host(
1534                                        "EXEC_NEXT_CMD: cmdpendingq empty, "
1535                                        "go back to PS_SLEEP");
1536                                 lbs_ps_sleep(priv, 0);
1537                         }
1538                 }
1539 #endif
1540         }
1541
1542         ret = 0;
1543 done:
1544         lbs_deb_leave(LBS_DEB_THREAD);
1545         return ret;
1546 }
1547
1548 static void lbs_send_confirmsleep(struct lbs_private *priv)
1549 {
1550         unsigned long flags;
1551         int ret;
1552
1553         lbs_deb_enter(LBS_DEB_HOST);
1554         lbs_deb_hex(LBS_DEB_HOST, "sleep confirm", (u8 *) &confirm_sleep,
1555                 sizeof(confirm_sleep));
1556
1557         ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &confirm_sleep,
1558                 sizeof(confirm_sleep));
1559         if (ret) {
1560                 lbs_pr_alert("confirm_sleep failed\n");
1561                 goto out;
1562         }
1563
1564         spin_lock_irqsave(&priv->driver_lock, flags);
1565
1566         /* We don't get a response on the sleep-confirmation */
1567         priv->dnld_sent = DNLD_RES_RECEIVED;
1568
1569         if (priv->is_host_sleep_configured) {
1570                 priv->is_host_sleep_activated = 1;
1571                 wake_up_interruptible(&priv->host_sleep_q);
1572         }
1573
1574         /* If nothing to do, go back to sleep (?) */
1575         if (!kfifo_len(&priv->event_fifo) && !priv->resp_len[priv->resp_idx])
1576                 priv->psstate = PS_STATE_SLEEP;
1577
1578         spin_unlock_irqrestore(&priv->driver_lock, flags);
1579
1580 out:
1581         lbs_deb_leave(LBS_DEB_HOST);
1582 }
1583
1584 void lbs_ps_sleep(struct lbs_private *priv, int wait_option)
1585 {
1586         lbs_deb_enter(LBS_DEB_HOST);
1587
1588         /*
1589          * PS is currently supported only in Infrastructure mode
1590          * Remove this check if it is to be supported in IBSS mode also
1591          */
1592
1593         lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
1594                               CMD_SUBCMD_ENTER_PS, wait_option, 0, NULL);
1595
1596         lbs_deb_leave(LBS_DEB_HOST);
1597 }
1598
1599 /**
1600  *  @brief This function sends Exit_PS command to firmware.
1601  *
1602  *  @param priv         A pointer to struct lbs_private structure
1603  *  @param wait_option  wait response or not
1604  *  @return             n/a
1605  */
1606 void lbs_ps_wakeup(struct lbs_private *priv, int wait_option)
1607 {
1608         __le32 Localpsmode;
1609
1610         lbs_deb_enter(LBS_DEB_HOST);
1611
1612         Localpsmode = cpu_to_le32(LBS802_11POWERMODECAM);
1613
1614         lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
1615                               CMD_SUBCMD_EXIT_PS,
1616                               wait_option, 0, &Localpsmode);
1617
1618         lbs_deb_leave(LBS_DEB_HOST);
1619 }
1620
1621 /**
1622  *  @brief This function checks condition and prepares to
1623  *  send sleep confirm command to firmware if ok.
1624  *
1625  *  @param priv         A pointer to struct lbs_private structure
1626  *  @param psmode       Power Saving mode
1627  *  @return             n/a
1628  */
1629 void lbs_ps_confirm_sleep(struct lbs_private *priv)
1630 {
1631         unsigned long flags =0;
1632         int allowed = 1;
1633
1634         lbs_deb_enter(LBS_DEB_HOST);
1635
1636         spin_lock_irqsave(&priv->driver_lock, flags);
1637         if (priv->dnld_sent) {
1638                 allowed = 0;
1639                 lbs_deb_host("dnld_sent was set\n");
1640         }
1641
1642         /* In-progress command? */
1643         if (priv->cur_cmd) {
1644                 allowed = 0;
1645                 lbs_deb_host("cur_cmd was set\n");
1646         }
1647
1648         /* Pending events or command responses? */
1649         if (kfifo_len(&priv->event_fifo) || priv->resp_len[priv->resp_idx]) {
1650                 allowed = 0;
1651                 lbs_deb_host("pending events or command responses\n");
1652         }
1653         spin_unlock_irqrestore(&priv->driver_lock, flags);
1654
1655         if (allowed) {
1656                 lbs_deb_host("sending lbs_ps_confirm_sleep\n");
1657                 lbs_send_confirmsleep(priv);
1658         } else {
1659                 lbs_deb_host("sleep confirm has been delayed\n");
1660         }
1661
1662         lbs_deb_leave(LBS_DEB_HOST);
1663 }
1664
1665
1666 /**
1667  * @brief Configures the transmission power control functionality.
1668  *
1669  * @param priv          A pointer to struct lbs_private structure
1670  * @param enable        Transmission power control enable
1671  * @param p0            Power level when link quality is good (dBm).
1672  * @param p1            Power level when link quality is fair (dBm).
1673  * @param p2            Power level when link quality is poor (dBm).
1674  * @param usesnr        Use Signal to Noise Ratio in TPC
1675  *
1676  * @return 0 on success
1677  */
1678 int lbs_set_tpc_cfg(struct lbs_private *priv, int enable, int8_t p0, int8_t p1,
1679                 int8_t p2, int usesnr)
1680 {
1681         struct cmd_ds_802_11_tpc_cfg cmd;
1682         int ret;
1683
1684         memset(&cmd, 0, sizeof(cmd));
1685         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1686         cmd.action = cpu_to_le16(CMD_ACT_SET);
1687         cmd.enable = !!enable;
1688         cmd.usesnr = !!usesnr;
1689         cmd.P0 = p0;
1690         cmd.P1 = p1;
1691         cmd.P2 = p2;
1692
1693         ret = lbs_cmd_with_response(priv, CMD_802_11_TPC_CFG, &cmd);
1694
1695         return ret;
1696 }
1697
1698 /**
1699  * @brief Configures the power adaptation settings.
1700  *
1701  * @param priv          A pointer to struct lbs_private structure
1702  * @param enable        Power adaptation enable
1703  * @param p0            Power level for 1, 2, 5.5 and 11 Mbps (dBm).
1704  * @param p1            Power level for 6, 9, 12, 18, 22, 24 and 36 Mbps (dBm).
1705  * @param p2            Power level for 48 and 54 Mbps (dBm).
1706  *
1707  * @return 0 on Success
1708  */
1709
1710 int lbs_set_power_adapt_cfg(struct lbs_private *priv, int enable, int8_t p0,
1711                 int8_t p1, int8_t p2)
1712 {
1713         struct cmd_ds_802_11_pa_cfg cmd;
1714         int ret;
1715
1716         memset(&cmd, 0, sizeof(cmd));
1717         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1718         cmd.action = cpu_to_le16(CMD_ACT_SET);
1719         cmd.enable = !!enable;
1720         cmd.P0 = p0;
1721         cmd.P1 = p1;
1722         cmd.P2 = p2;
1723
1724         ret = lbs_cmd_with_response(priv, CMD_802_11_PA_CFG , &cmd);
1725
1726         return ret;
1727 }
1728
1729
1730 struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv,
1731         uint16_t command, struct cmd_header *in_cmd, int in_cmd_size,
1732         int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1733         unsigned long callback_arg)
1734 {
1735         struct cmd_ctrl_node *cmdnode;
1736
1737         lbs_deb_enter(LBS_DEB_HOST);
1738
1739         if (priv->surpriseremoved) {
1740                 lbs_deb_host("PREP_CMD: card removed\n");
1741                 cmdnode = ERR_PTR(-ENOENT);
1742                 goto done;
1743         }
1744
1745         if (!lbs_is_cmd_allowed(priv)) {
1746                 cmdnode = ERR_PTR(-EBUSY);
1747                 goto done;
1748         }
1749
1750         cmdnode = lbs_get_cmd_ctrl_node(priv);
1751         if (cmdnode == NULL) {
1752                 lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
1753
1754                 /* Wake up main thread to execute next command */
1755                 wake_up_interruptible(&priv->waitq);
1756                 cmdnode = ERR_PTR(-ENOBUFS);
1757                 goto done;
1758         }
1759
1760         cmdnode->callback = callback;
1761         cmdnode->callback_arg = callback_arg;
1762
1763         /* Copy the incoming command to the buffer */
1764         memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size);
1765
1766         /* Set sequence number, clean result, move to buffer */
1767         priv->seqnum++;
1768         cmdnode->cmdbuf->command = cpu_to_le16(command);
1769         cmdnode->cmdbuf->size    = cpu_to_le16(in_cmd_size);
1770         cmdnode->cmdbuf->seqnum  = cpu_to_le16(priv->seqnum);
1771         cmdnode->cmdbuf->result  = 0;
1772
1773         lbs_deb_host("PREP_CMD: command 0x%04x\n", command);
1774
1775         cmdnode->cmdwaitqwoken = 0;
1776         lbs_queue_cmd(priv, cmdnode);
1777         wake_up_interruptible(&priv->waitq);
1778
1779  done:
1780         lbs_deb_leave_args(LBS_DEB_HOST, "ret %p", cmdnode);
1781         return cmdnode;
1782 }
1783
1784 void lbs_cmd_async(struct lbs_private *priv, uint16_t command,
1785         struct cmd_header *in_cmd, int in_cmd_size)
1786 {
1787         lbs_deb_enter(LBS_DEB_CMD);
1788         __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1789                 lbs_cmd_async_callback, 0);
1790         lbs_deb_leave(LBS_DEB_CMD);
1791 }
1792
1793 int __lbs_cmd(struct lbs_private *priv, uint16_t command,
1794               struct cmd_header *in_cmd, int in_cmd_size,
1795               int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1796               unsigned long callback_arg)
1797 {
1798         struct cmd_ctrl_node *cmdnode;
1799         unsigned long flags;
1800         int ret = 0;
1801
1802         lbs_deb_enter(LBS_DEB_HOST);
1803
1804         cmdnode = __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1805                                   callback, callback_arg);
1806         if (IS_ERR(cmdnode)) {
1807                 ret = PTR_ERR(cmdnode);
1808                 goto done;
1809         }
1810
1811         might_sleep();
1812         wait_event_interruptible(cmdnode->cmdwait_q, cmdnode->cmdwaitqwoken);
1813
1814         spin_lock_irqsave(&priv->driver_lock, flags);
1815         ret = cmdnode->result;
1816         if (ret)
1817                 lbs_pr_info("PREP_CMD: command 0x%04x failed: %d\n",
1818                             command, ret);
1819
1820         __lbs_cleanup_and_insert_cmd(priv, cmdnode);
1821         spin_unlock_irqrestore(&priv->driver_lock, flags);
1822
1823 done:
1824         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1825         return ret;
1826 }
1827 EXPORT_SYMBOL_GPL(__lbs_cmd);