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;
 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                 *out_val = cmd.value[0];
 447                 break;
 448         case sizeof(u16):
 449                 *out_val = le16_to_cpu(*((__le16 *)(&cmd.value)));
 450                 break;
 451         default:
 452                 lbs_deb_cmd("SNMP_CMD: (get) unhandled OID 0x%x size %d\n",
 453                             oid, le16_to_cpu(cmd.bufsize));
 454                 break;
 455         }
 456
 457 out:
 458         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 459         return ret;
 460 }
 461
 462 /**
 463  *  @brief Get the min, max, and current TX power
 464  *
 465  *  @param priv         A pointer to struct lbs_private structure
 466  *  @param curlevel     Current power level in dBm
 467  *  @param minlevel     Minimum supported power level in dBm (optional)
 468  *  @param maxlevel     Maximum supported power level in dBm (optional)
 469  *
 470  *  @return             0 on success, error on failure
 471  */
 472 int lbs_get_tx_power(struct lbs_private *priv, s16 *curlevel, s16 *minlevel,
 473                      s16 *maxlevel)
 474 {
 475         struct cmd_ds_802_11_rf_tx_power cmd;
 476         int ret;
 477
 478         lbs_deb_enter(LBS_DEB_CMD);
 479
 480         memset(&cmd, 0, sizeof(cmd));
 481         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 482         cmd.action = cpu_to_le16(CMD_ACT_GET);
 483
 484         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
 485         if (ret == 0) {
 486                 *curlevel = le16_to_cpu(cmd.curlevel);
 487                 if (minlevel)
 488                         *minlevel = cmd.minlevel;
 489                 if (maxlevel)
 490                         *maxlevel = cmd.maxlevel;
 491         }
 492
 493         lbs_deb_leave(LBS_DEB_CMD);
 494         return ret;
 495 }
 496
 497 /**
 498  *  @brief Set the TX power
 499  *
 500  *  @param priv         A pointer to struct lbs_private structure
 501  *  @param dbm          The desired power level in dBm
 502  *
 503  *  @return             0 on success, error on failure
 504  */
 505 int lbs_set_tx_power(struct lbs_private *priv, s16 dbm)
 506 {
 507         struct cmd_ds_802_11_rf_tx_power cmd;
 508         int ret;
 509
 510         lbs_deb_enter(LBS_DEB_CMD);
 511
 512         memset(&cmd, 0, sizeof(cmd));
 513         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 514         cmd.action = cpu_to_le16(CMD_ACT_SET);
 515         cmd.curlevel = cpu_to_le16(dbm);
 516
 517         lbs_deb_cmd("SET_RF_TX_POWER: %d dBm\n", dbm);
 518
 519         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
 520
 521         lbs_deb_leave(LBS_DEB_CMD);
 522         return ret;
 523 }
 524
 525 static int lbs_cmd_802_11_monitor_mode(struct cmd_ds_command *cmd,
 526                                       u16 cmd_action, void *pdata_buf)
 527 {
 528         struct cmd_ds_802_11_monitor_mode *monitor = &cmd->params.monitor;
 529
 530         cmd->command = cpu_to_le16(CMD_802_11_MONITOR_MODE);
 531         cmd->size =
 532             cpu_to_le16(sizeof(struct cmd_ds_802_11_monitor_mode) +
 533                              sizeof(struct cmd_header));
 534
 535         monitor->action = cpu_to_le16(cmd_action);
 536         if (cmd_action == CMD_ACT_SET) {
 537                 monitor->mode =
 538                     cpu_to_le16((u16) (*(u32 *) pdata_buf));
 539         }
 540
 541         return 0;
 542 }
 543
 544 /**
 545  *  @brief Get the radio channel
 546  *
 547  *  @param priv         A pointer to struct lbs_private structure
 548  *
 549  *  @return             The channel on success, error on failure
 550  */
 551 static int lbs_get_channel(struct lbs_private *priv)
 552 {
 553         struct cmd_ds_802_11_rf_channel cmd;
 554         int ret = 0;
 555
 556         lbs_deb_enter(LBS_DEB_CMD);
 557
 558         memset(&cmd, 0, sizeof(cmd));
 559         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 560         cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_GET);
 561
 562         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
 563         if (ret)
 564                 goto out;
 565
 566         ret = le16_to_cpu(cmd.channel);
 567         lbs_deb_cmd("current radio channel is %d\n", ret);
 568
 569 out:
 570         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 571         return ret;
 572 }
 573
 574 int lbs_update_channel(struct lbs_private *priv)
 575 {
 576         int ret;
 577
 578         /* the channel in f/w could be out of sync; get the current channel */
 579         lbs_deb_enter(LBS_DEB_ASSOC);
 580
 581         ret = lbs_get_channel(priv);
 582         if (ret > 0) {
 583                 priv->channel = ret;
 584                 ret = 0;
 585         }
 586         lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
 587         return ret;
 588 }
 589
 590 /**
 591  *  @brief Set the radio channel
 592  *
 593  *  @param priv         A pointer to struct lbs_private structure
 594  *  @param channel      The desired channel, or 0 to clear a locked channel
 595  *
 596  *  @return             0 on success, error on failure
 597  */
 598 int lbs_set_channel(struct lbs_private *priv, u8 channel)
 599 {
 600         struct cmd_ds_802_11_rf_channel cmd;
 601 #ifdef DEBUG
 602         u8 old_channel = priv->channel;
 603 #endif
 604         int ret = 0;
 605
 606         lbs_deb_enter(LBS_DEB_CMD);
 607
 608         memset(&cmd, 0, sizeof(cmd));
 609         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
 610         cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET);
 611         cmd.channel = cpu_to_le16(channel);
 612
 613         ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
 614         if (ret)
 615                 goto out;
 616
 617         priv->channel = (uint8_t) le16_to_cpu(cmd.channel);
 618         lbs_deb_cmd("channel switch from %d to %d\n", old_channel,
 619                 priv->channel);
 620
 621 out:
 622         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 623         return ret;
 624 }
 625
 626 static int lbs_cmd_reg_access(struct cmd_ds_command *cmdptr,
 627                                u8 cmd_action, void *pdata_buf)
 628 {
 629         struct lbs_offset_value *offval;
 630
 631         lbs_deb_enter(LBS_DEB_CMD);
 632
 633         offval = (struct lbs_offset_value *)pdata_buf;
 634
 635         switch (le16_to_cpu(cmdptr->command)) {
 636         case CMD_MAC_REG_ACCESS:
 637                 {
 638                         struct cmd_ds_mac_reg_access *macreg;
 639
 640                         cmdptr->size =
 641                             cpu_to_le16(sizeof (struct cmd_ds_mac_reg_access)
 642                                         + sizeof(struct cmd_header));
 643                         macreg =
 644                             (struct cmd_ds_mac_reg_access *)&cmdptr->params.
 645                             macreg;
 646
 647                         macreg->action = cpu_to_le16(cmd_action);
 648                         macreg->offset = cpu_to_le16((u16) offval->offset);
 649                         macreg->value = cpu_to_le32(offval->value);
 650
 651                         break;
 652                 }
 653
 654         case CMD_BBP_REG_ACCESS:
 655                 {
 656                         struct cmd_ds_bbp_reg_access *bbpreg;
 657
 658                         cmdptr->size =
 659                             cpu_to_le16(sizeof
 660                                              (struct cmd_ds_bbp_reg_access)
 661                                              + sizeof(struct cmd_header));
 662                         bbpreg =
 663                             (struct cmd_ds_bbp_reg_access *)&cmdptr->params.
 664                             bbpreg;
 665
 666                         bbpreg->action = cpu_to_le16(cmd_action);
 667                         bbpreg->offset = cpu_to_le16((u16) offval->offset);
 668                         bbpreg->value = (u8) offval->value;
 669
 670                         break;
 671                 }
 672
 673         case CMD_RF_REG_ACCESS:
 674                 {
 675                         struct cmd_ds_rf_reg_access *rfreg;
 676
 677                         cmdptr->size =
 678                             cpu_to_le16(sizeof
 679                                              (struct cmd_ds_rf_reg_access) +
 680                                              sizeof(struct cmd_header));
 681                         rfreg =
 682                             (struct cmd_ds_rf_reg_access *)&cmdptr->params.
 683                             rfreg;
 684
 685                         rfreg->action = cpu_to_le16(cmd_action);
 686                         rfreg->offset = cpu_to_le16((u16) offval->offset);
 687                         rfreg->value = (u8) offval->value;
 688
 689                         break;
 690                 }
 691
 692         default:
 693                 break;
 694         }
 695
 696         lbs_deb_leave(LBS_DEB_CMD);
 697         return 0;
 698 }
 699
 700 static int lbs_cmd_bt_access(struct cmd_ds_command *cmd,
 701                                u16 cmd_action, void *pdata_buf)
 702 {
 703         struct cmd_ds_bt_access *bt_access = &cmd->params.bt;
 704         lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
 705
 706         cmd->command = cpu_to_le16(CMD_BT_ACCESS);
 707         cmd->size = cpu_to_le16(sizeof(struct cmd_ds_bt_access) +
 708                 sizeof(struct cmd_header));
 709         cmd->result = 0;
 710         bt_access->action = cpu_to_le16(cmd_action);
 711
 712         switch (cmd_action) {
 713         case CMD_ACT_BT_ACCESS_ADD:
 714                 memcpy(bt_access->addr1, pdata_buf, 2 * ETH_ALEN);
 715                 lbs_deb_hex(LBS_DEB_MESH, "BT_ADD: blinded MAC addr", bt_access->addr1, 6);
 716                 break;
 717         case CMD_ACT_BT_ACCESS_DEL:
 718                 memcpy(bt_access->addr1, pdata_buf, 1 * ETH_ALEN);
 719                 lbs_deb_hex(LBS_DEB_MESH, "BT_DEL: blinded MAC addr", bt_access->addr1, 6);
 720                 break;
 721         case CMD_ACT_BT_ACCESS_LIST:
 722                 bt_access->id = cpu_to_le32(*(u32 *) pdata_buf);
 723                 break;
 724         case CMD_ACT_BT_ACCESS_RESET:
 725                 break;
 726         case CMD_ACT_BT_ACCESS_SET_INVERT:
 727                 bt_access->id = cpu_to_le32(*(u32 *) pdata_buf);
 728                 break;
 729         case CMD_ACT_BT_ACCESS_GET_INVERT:
 730                 break;
 731         default:
 732                 break;
 733         }
 734         lbs_deb_leave(LBS_DEB_CMD);
 735         return 0;
 736 }
 737
 738 static int lbs_cmd_fwt_access(struct cmd_ds_command *cmd,
 739                                u16 cmd_action, void *pdata_buf)
 740 {
 741         struct cmd_ds_fwt_access *fwt_access = &cmd->params.fwt;
 742         lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
 743
 744         cmd->command = cpu_to_le16(CMD_FWT_ACCESS);
 745         cmd->size = cpu_to_le16(sizeof(struct cmd_ds_fwt_access) +
 746                 sizeof(struct cmd_header));
 747         cmd->result = 0;
 748
 749         if (pdata_buf)
 750                 memcpy(fwt_access, pdata_buf, sizeof(*fwt_access));
 751         else
 752                 memset(fwt_access, 0, sizeof(*fwt_access));
 753
 754         fwt_access->action = cpu_to_le16(cmd_action);
 755
 756         lbs_deb_leave(LBS_DEB_CMD);
 757         return 0;
 758 }
 759
 760 int lbs_mesh_access(struct lbs_private *priv, uint16_t cmd_action,
 761                     struct cmd_ds_mesh_access *cmd)
 762 {
 763         int ret;
 764
 765         lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);
 766
 767         cmd->hdr.command = cpu_to_le16(CMD_MESH_ACCESS);
 768         cmd->hdr.size = cpu_to_le16(sizeof(*cmd));
 769         cmd->hdr.result = 0;
 770
 771         cmd->action = cpu_to_le16(cmd_action);
 772
 773         ret = lbs_cmd_with_response(priv, CMD_MESH_ACCESS, cmd);
 774
 775         lbs_deb_leave(LBS_DEB_CMD);
 776         return ret;
 777 }
 778
 779 static int __lbs_mesh_config_send(struct lbs_private *priv,
 780                                   struct cmd_ds_mesh_config *cmd,
 781                                   uint16_t action, uint16_t type)
 782 {
 783         int ret;
 784         u16 command = CMD_MESH_CONFIG_OLD;
 785
 786         lbs_deb_enter(LBS_DEB_CMD);
 787
 788         /*
 789          * Command id is 0xac for v10 FW along with mesh interface
 790          * id in bits 14-13-12.
 791          */
 792         if (priv->mesh_fw_ver == MESH_FW_NEW)
 793                 command = CMD_MESH_CONFIG |
 794                           (MESH_IFACE_ID << MESH_IFACE_BIT_OFFSET);
 795
 796         cmd->hdr.command = cpu_to_le16(command);
 797         cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_mesh_config));
 798         cmd->hdr.result = 0;
 799
 800         cmd->type = cpu_to_le16(type);
 801         cmd->action = cpu_to_le16(action);
 802
 803         ret = lbs_cmd_with_response(priv, command, cmd);
 804
 805         lbs_deb_leave(LBS_DEB_CMD);
 806         return ret;
 807 }
 808
 809 int lbs_mesh_config_send(struct lbs_private *priv,
 810                          struct cmd_ds_mesh_config *cmd,
 811                          uint16_t action, uint16_t type)
 812 {
 813         int ret;
 814
 815         if (!(priv->fwcapinfo & FW_CAPINFO_PERSISTENT_CONFIG))
 816                 return -EOPNOTSUPP;
 817
 818         ret = __lbs_mesh_config_send(priv, cmd, action, type);
 819         return ret;
 820 }
 821
 822 /* This function is the CMD_MESH_CONFIG legacy function.  It only handles the
 823  * START and STOP actions.  The extended actions supported by CMD_MESH_CONFIG
 824  * are all handled by preparing a struct cmd_ds_mesh_config and passing it to
 825  * lbs_mesh_config_send.
 826  */
 827 int lbs_mesh_config(struct lbs_private *priv, uint16_t action, uint16_t chan)
 828 {
 829         struct cmd_ds_mesh_config cmd;
 830         struct mrvl_meshie *ie;
 831         DECLARE_SSID_BUF(ssid);
 832
 833         memset(&cmd, 0, sizeof(cmd));
 834         cmd.channel = cpu_to_le16(chan);
 835         ie = (struct mrvl_meshie *)cmd.data;
 836
 837         switch (action) {
 838         case CMD_ACT_MESH_CONFIG_START:
 839                 ie->id = WLAN_EID_GENERIC;
 840                 ie->val.oui[0] = 0x00;
 841                 ie->val.oui[1] = 0x50;
 842                 ie->val.oui[2] = 0x43;
 843                 ie->val.type = MARVELL_MESH_IE_TYPE;
 844                 ie->val.subtype = MARVELL_MESH_IE_SUBTYPE;
 845                 ie->val.version = MARVELL_MESH_IE_VERSION;
 846                 ie->val.active_protocol_id = MARVELL_MESH_PROTO_ID_HWMP;
 847                 ie->val.active_metric_id = MARVELL_MESH_METRIC_ID;
 848                 ie->val.mesh_capability = MARVELL_MESH_CAPABILITY;
 849                 ie->val.mesh_id_len = priv->mesh_ssid_len;
 850                 memcpy(ie->val.mesh_id, priv->mesh_ssid, priv->mesh_ssid_len);
 851                 ie->len = sizeof(struct mrvl_meshie_val) -
 852                         IEEE80211_MAX_SSID_LEN + priv->mesh_ssid_len;
 853                 cmd.length = cpu_to_le16(sizeof(struct mrvl_meshie_val));
 854                 break;
 855         case CMD_ACT_MESH_CONFIG_STOP:
 856                 break;
 857         default:
 858                 return -1;
 859         }
 860         lbs_deb_cmd("mesh config action %d type %x channel %d SSID %s\n",
 861                     action, priv->mesh_tlv, chan,
 862                     print_ssid(ssid, priv->mesh_ssid, priv->mesh_ssid_len));
 863
 864         return __lbs_mesh_config_send(priv, &cmd, action, priv->mesh_tlv);
 865 }
 866
 867 static void lbs_queue_cmd(struct lbs_private *priv,
 868                           struct cmd_ctrl_node *cmdnode)
 869 {
 870         unsigned long flags;
 871         int addtail = 1;
 872
 873         lbs_deb_enter(LBS_DEB_HOST);
 874
 875         if (!cmdnode) {
 876                 lbs_deb_host("QUEUE_CMD: cmdnode is NULL\n");
 877                 goto done;
 878         }
 879         if (!cmdnode->cmdbuf->size) {
 880                 lbs_deb_host("DNLD_CMD: cmd size is zero\n");
 881                 goto done;
 882         }
 883         cmdnode->result = 0;
 884
 885         /* Exit_PS command needs to be queued in the header always. */
 886         if (le16_to_cpu(cmdnode->cmdbuf->command) == CMD_802_11_PS_MODE) {
 887                 struct cmd_ds_802_11_ps_mode *psm = (void *) &cmdnode->cmdbuf[1];
 888
 889                 if (psm->action == cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
 890                         if (priv->psstate != PS_STATE_FULL_POWER)
 891                                 addtail = 0;
 892                 }
 893         }
 894
 895         spin_lock_irqsave(&priv->driver_lock, flags);
 896
 897         if (addtail)
 898                 list_add_tail(&cmdnode->list, &priv->cmdpendingq);
 899         else
 900                 list_add(&cmdnode->list, &priv->cmdpendingq);
 901
 902         spin_unlock_irqrestore(&priv->driver_lock, flags);
 903
 904         lbs_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n",
 905                      le16_to_cpu(cmdnode->cmdbuf->command));
 906
 907 done:
 908         lbs_deb_leave(LBS_DEB_HOST);
 909 }
 910
 911 static void lbs_submit_command(struct lbs_private *priv,
 912                                struct cmd_ctrl_node *cmdnode)
 913 {
 914         unsigned long flags;
 915         struct cmd_header *cmd;
 916         uint16_t cmdsize;
 917         uint16_t command;
 918         int timeo = 3 * HZ;
 919         int ret;
 920
 921         lbs_deb_enter(LBS_DEB_HOST);
 922
 923         cmd = cmdnode->cmdbuf;
 924
 925         spin_lock_irqsave(&priv->driver_lock, flags);
 926         priv->cur_cmd = cmdnode;
 927         priv->cur_cmd_retcode = 0;
 928         spin_unlock_irqrestore(&priv->driver_lock, flags);
 929
 930         cmdsize = le16_to_cpu(cmd->size);
 931         command = le16_to_cpu(cmd->command);
 932
 933         /* These commands take longer */
 934         if (command == CMD_802_11_SCAN || command == CMD_802_11_ASSOCIATE)
 935                 timeo = 5 * HZ;
 936
 937         lbs_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n",
 938                      command, le16_to_cpu(cmd->seqnum), cmdsize);
 939         lbs_deb_hex(LBS_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize);
 940
 941         ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize);
 942
 943         if (ret) {
 944                 lbs_pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret);
 945                 /* Let the timer kick in and retry, and potentially reset
 946                    the whole thing if the condition persists */
 947                 timeo = HZ/4;
 948         }
 949
 950         if (command == CMD_802_11_DEEP_SLEEP) {
 951                 if (priv->is_auto_deep_sleep_enabled) {
 952                         priv->wakeup_dev_required = 1;
 953                         priv->dnld_sent = 0;
 954                 }
 955                 priv->is_deep_sleep = 1;
 956                 lbs_complete_command(priv, cmdnode, 0);
 957         } else {
 958                 /* Setup the timer after transmit command */
 959                 mod_timer(&priv->command_timer, jiffies + timeo);
 960         }
 961
 962         lbs_deb_leave(LBS_DEB_HOST);
 963 }
 964
 965 /**
 966  *  This function inserts command node to cmdfreeq
 967  *  after cleans it. Requires priv->driver_lock held.
 968  */
 969 static void __lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
 970                                          struct cmd_ctrl_node *cmdnode)
 971 {
 972         lbs_deb_enter(LBS_DEB_HOST);
 973
 974         if (!cmdnode)
 975                 goto out;
 976
 977         cmdnode->callback = NULL;
 978         cmdnode->callback_arg = 0;
 979
 980         memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE);
 981
 982         list_add_tail(&cmdnode->list, &priv->cmdfreeq);
 983  out:
 984         lbs_deb_leave(LBS_DEB_HOST);
 985 }
 986
 987 static void lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
 988         struct cmd_ctrl_node *ptempcmd)
 989 {
 990         unsigned long flags;
 991
 992         spin_lock_irqsave(&priv->driver_lock, flags);
 993         __lbs_cleanup_and_insert_cmd(priv, ptempcmd);
 994         spin_unlock_irqrestore(&priv->driver_lock, flags);
 995 }
 996
 997 void lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd,
 998                           int result)
 999 {
1000         if (cmd == priv->cur_cmd)
1001                 priv->cur_cmd_retcode = result;
1002
1003         cmd->result = result;
1004         cmd->cmdwaitqwoken = 1;
1005         wake_up_interruptible(&cmd->cmdwait_q);
1006
1007         if (!cmd->callback || cmd->callback == lbs_cmd_async_callback)
1008                 __lbs_cleanup_and_insert_cmd(priv, cmd);
1009         priv->cur_cmd = NULL;
1010 }
1011
1012 int lbs_set_radio(struct lbs_private *priv, u8 preamble, u8 radio_on)
1013 {
1014         struct cmd_ds_802_11_radio_control cmd;
1015         int ret = -EINVAL;
1016
1017         lbs_deb_enter(LBS_DEB_CMD);
1018
1019         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1020         cmd.action = cpu_to_le16(CMD_ACT_SET);
1021
1022         /* Only v8 and below support setting the preamble */
1023         if (priv->fwrelease < 0x09000000) {
1024                 switch (preamble) {
1025                 case RADIO_PREAMBLE_SHORT:
1026                         if (!(priv->capability & WLAN_CAPABILITY_SHORT_PREAMBLE))
1027                                 goto out;
1028                         /* Fall through */
1029                 case RADIO_PREAMBLE_AUTO:
1030                 case RADIO_PREAMBLE_LONG:
1031                         cmd.control = cpu_to_le16(preamble);
1032                         break;
1033                 default:
1034                         goto out;
1035                 }
1036         }
1037
1038         if (radio_on)
1039                 cmd.control |= cpu_to_le16(0x1);
1040         else {
1041                 cmd.control &= cpu_to_le16(~0x1);
1042                 priv->txpower_cur = 0;
1043         }
1044
1045         lbs_deb_cmd("RADIO_CONTROL: radio %s, preamble %d\n",
1046                     radio_on ? "ON" : "OFF", preamble);
1047
1048         priv->radio_on = radio_on;
1049
1050         ret = lbs_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd);
1051
1052 out:
1053         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
1054         return ret;
1055 }
1056
1057 void lbs_set_mac_control(struct lbs_private *priv)
1058 {
1059         struct cmd_ds_mac_control cmd;
1060
1061         lbs_deb_enter(LBS_DEB_CMD);
1062
1063         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1064         cmd.action = cpu_to_le16(priv->mac_control);
1065         cmd.reserved = 0;
1066
1067         lbs_cmd_async(priv, CMD_MAC_CONTROL, &cmd.hdr, sizeof(cmd));
1068
1069         lbs_deb_leave(LBS_DEB_CMD);
1070 }
1071
1072 /**
1073  *  @brief This function prepare the command before send to firmware.
1074  *
1075  *  @param priv         A pointer to struct lbs_private structure
1076  *  @param cmd_no       command number
1077  *  @param cmd_action   command action: GET or SET
1078  *  @param wait_option  wait option: wait response or not
1079  *  @param cmd_oid      cmd oid: treated as sub command
1080  *  @param pdata_buf    A pointer to informaion buffer
1081  *  @return             0 or -1
1082  */
1083 int lbs_prepare_and_send_command(struct lbs_private *priv,
1084                           u16 cmd_no,
1085                           u16 cmd_action,
1086                           u16 wait_option, u32 cmd_oid, void *pdata_buf)
1087 {
1088         int ret = 0;
1089         struct cmd_ctrl_node *cmdnode;
1090         struct cmd_ds_command *cmdptr;
1091         unsigned long flags;
1092
1093         lbs_deb_enter(LBS_DEB_HOST);
1094
1095         if (!priv) {
1096                 lbs_deb_host("PREP_CMD: priv is NULL\n");
1097                 ret = -1;
1098                 goto done;
1099         }
1100
1101         if (priv->surpriseremoved) {
1102                 lbs_deb_host("PREP_CMD: card removed\n");
1103                 ret = -1;
1104                 goto done;
1105         }
1106
1107         if (!lbs_is_cmd_allowed(priv)) {
1108                 ret = -EBUSY;
1109                 goto done;
1110         }
1111
1112         cmdnode = lbs_get_cmd_ctrl_node(priv);
1113
1114         if (cmdnode == NULL) {
1115                 lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
1116
1117                 /* Wake up main thread to execute next command */
1118                 wake_up_interruptible(&priv->waitq);
1119                 ret = -1;
1120                 goto done;
1121         }
1122
1123         cmdnode->callback = NULL;
1124         cmdnode->callback_arg = (unsigned long)pdata_buf;
1125
1126         cmdptr = (struct cmd_ds_command *)cmdnode->cmdbuf;
1127
1128         lbs_deb_host("PREP_CMD: command 0x%04x\n", cmd_no);
1129
1130         /* Set sequence number, command and INT option */
1131         priv->seqnum++;
1132         cmdptr->seqnum = cpu_to_le16(priv->seqnum);
1133
1134         cmdptr->command = cpu_to_le16(cmd_no);
1135         cmdptr->result = 0;
1136
1137         switch (cmd_no) {
1138         case CMD_802_11_PS_MODE:
1139                 ret = lbs_cmd_802_11_ps_mode(cmdptr, cmd_action);
1140                 break;
1141
1142         case CMD_MAC_REG_ACCESS:
1143         case CMD_BBP_REG_ACCESS:
1144         case CMD_RF_REG_ACCESS:
1145                 ret = lbs_cmd_reg_access(cmdptr, cmd_action, pdata_buf);
1146                 break;
1147
1148         case CMD_802_11_MONITOR_MODE:
1149                 ret = lbs_cmd_802_11_monitor_mode(cmdptr,
1150                                           cmd_action, pdata_buf);
1151                 break;
1152
1153         case CMD_802_11_RSSI:
1154                 ret = lbs_cmd_802_11_rssi(priv, cmdptr);
1155                 break;
1156
1157         case CMD_802_11_SET_AFC:
1158         case CMD_802_11_GET_AFC:
1159
1160                 cmdptr->command = cpu_to_le16(cmd_no);
1161                 cmdptr->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_afc) +
1162                                            sizeof(struct cmd_header));
1163
1164                 memmove(&cmdptr->params.afc,
1165                         pdata_buf, sizeof(struct cmd_ds_802_11_afc));
1166
1167                 ret = 0;
1168                 goto done;
1169
1170         case CMD_802_11_TPC_CFG:
1171                 cmdptr->command = cpu_to_le16(CMD_802_11_TPC_CFG);
1172                 cmdptr->size =
1173                     cpu_to_le16(sizeof(struct cmd_ds_802_11_tpc_cfg) +
1174                                      sizeof(struct cmd_header));
1175
1176                 memmove(&cmdptr->params.tpccfg,
1177                         pdata_buf, sizeof(struct cmd_ds_802_11_tpc_cfg));
1178
1179                 ret = 0;
1180                 break;
1181
1182         case CMD_BT_ACCESS:
1183                 ret = lbs_cmd_bt_access(cmdptr, cmd_action, pdata_buf);
1184                 break;
1185
1186         case CMD_FWT_ACCESS:
1187                 ret = lbs_cmd_fwt_access(cmdptr, cmd_action, pdata_buf);
1188                 break;
1189
1190         case CMD_802_11_BEACON_CTRL:
1191                 ret = lbs_cmd_bcn_ctrl(priv, cmdptr, cmd_action);
1192                 break;
1193         case CMD_802_11_DEEP_SLEEP:
1194                 cmdptr->command = cpu_to_le16(CMD_802_11_DEEP_SLEEP);
1195                 cmdptr->size = cpu_to_le16(sizeof(struct cmd_header));
1196                 break;
1197         default:
1198                 lbs_pr_err("PREP_CMD: unknown command 0x%04x\n", cmd_no);
1199                 ret = -1;
1200                 break;
1201         }
1202
1203         /* return error, since the command preparation failed */
1204         if (ret != 0) {
1205                 lbs_deb_host("PREP_CMD: command preparation failed\n");
1206                 lbs_cleanup_and_insert_cmd(priv, cmdnode);
1207                 ret = -1;
1208                 goto done;
1209         }
1210
1211         cmdnode->cmdwaitqwoken = 0;
1212
1213         lbs_queue_cmd(priv, cmdnode);
1214         wake_up_interruptible(&priv->waitq);
1215
1216         if (wait_option & CMD_OPTION_WAITFORRSP) {
1217                 lbs_deb_host("PREP_CMD: wait for response\n");
1218                 might_sleep();
1219                 wait_event_interruptible(cmdnode->cmdwait_q,
1220                                          cmdnode->cmdwaitqwoken);
1221         }
1222
1223         spin_lock_irqsave(&priv->driver_lock, flags);
1224         if (priv->cur_cmd_retcode) {
1225                 lbs_deb_host("PREP_CMD: command failed with return code %d\n",
1226                        priv->cur_cmd_retcode);
1227                 priv->cur_cmd_retcode = 0;
1228                 ret = -1;
1229         }
1230         spin_unlock_irqrestore(&priv->driver_lock, flags);
1231
1232 done:
1233         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1234         return ret;
1235 }
1236
1237 /**
1238  *  @brief This function allocates the command buffer and link
1239  *  it to command free queue.
1240  *
1241  *  @param priv         A pointer to struct lbs_private structure
1242  *  @return             0 or -1
1243  */
1244 int lbs_allocate_cmd_buffer(struct lbs_private *priv)
1245 {
1246         int ret = 0;
1247         u32 bufsize;
1248         u32 i;
1249         struct cmd_ctrl_node *cmdarray;
1250
1251         lbs_deb_enter(LBS_DEB_HOST);
1252
1253         /* Allocate and initialize the command array */
1254         bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS;
1255         if (!(cmdarray = kzalloc(bufsize, GFP_KERNEL))) {
1256                 lbs_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n");
1257                 ret = -1;
1258                 goto done;
1259         }
1260         priv->cmd_array = cmdarray;
1261
1262         /* Allocate and initialize each command buffer in the command array */
1263         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1264                 cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL);
1265                 if (!cmdarray[i].cmdbuf) {
1266                         lbs_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n");
1267                         ret = -1;
1268                         goto done;
1269                 }
1270         }
1271
1272         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1273                 init_waitqueue_head(&cmdarray[i].cmdwait_q);
1274                 lbs_cleanup_and_insert_cmd(priv, &cmdarray[i]);
1275         }
1276         ret = 0;
1277
1278 done:
1279         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1280         return ret;
1281 }
1282
1283 /**
1284  *  @brief This function frees the command buffer.
1285  *
1286  *  @param priv         A pointer to struct lbs_private structure
1287  *  @return             0 or -1
1288  */
1289 int lbs_free_cmd_buffer(struct lbs_private *priv)
1290 {
1291         struct cmd_ctrl_node *cmdarray;
1292         unsigned int i;
1293
1294         lbs_deb_enter(LBS_DEB_HOST);
1295
1296         /* need to check if cmd array is allocated or not */
1297         if (priv->cmd_array == NULL) {
1298                 lbs_deb_host("FREE_CMD_BUF: cmd_array is NULL\n");
1299                 goto done;
1300         }
1301
1302         cmdarray = priv->cmd_array;
1303
1304         /* Release shared memory buffers */
1305         for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1306                 if (cmdarray[i].cmdbuf) {
1307                         kfree(cmdarray[i].cmdbuf);
1308                         cmdarray[i].cmdbuf = NULL;
1309                 }
1310         }
1311
1312         /* Release cmd_ctrl_node */
1313         if (priv->cmd_array) {
1314                 kfree(priv->cmd_array);
1315                 priv->cmd_array = NULL;
1316         }
1317
1318 done:
1319         lbs_deb_leave(LBS_DEB_HOST);
1320         return 0;
1321 }
1322
1323 /**
1324  *  @brief This function gets a free command node if available in
1325  *  command free queue.
1326  *
1327  *  @param priv         A pointer to struct lbs_private structure
1328  *  @return cmd_ctrl_node A pointer to cmd_ctrl_node structure or NULL
1329  */
1330 static struct cmd_ctrl_node *lbs_get_cmd_ctrl_node(struct lbs_private *priv)
1331 {
1332         struct cmd_ctrl_node *tempnode;
1333         unsigned long flags;
1334
1335         lbs_deb_enter(LBS_DEB_HOST);
1336
1337         if (!priv)
1338                 return NULL;
1339
1340         spin_lock_irqsave(&priv->driver_lock, flags);
1341
1342         if (!list_empty(&priv->cmdfreeq)) {
1343                 tempnode = list_first_entry(&priv->cmdfreeq,
1344                                             struct cmd_ctrl_node, list);
1345                 list_del(&tempnode->list);
1346         } else {
1347                 lbs_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n");
1348                 tempnode = NULL;
1349         }
1350
1351         spin_unlock_irqrestore(&priv->driver_lock, flags);
1352
1353         lbs_deb_leave(LBS_DEB_HOST);
1354         return tempnode;
1355 }
1356
1357 /**
1358  *  @brief This function executes next command in command
1359  *  pending queue. It will put firmware back to PS mode
1360  *  if applicable.
1361  *
1362  *  @param priv     A pointer to struct lbs_private structure
1363  *  @return        0 or -1
1364  */
1365 int lbs_execute_next_command(struct lbs_private *priv)
1366 {
1367         struct cmd_ctrl_node *cmdnode = NULL;
1368         struct cmd_header *cmd;
1369         unsigned long flags;
1370         int ret = 0;
1371
1372         /* Debug group is LBS_DEB_THREAD and not LBS_DEB_HOST, because the
1373          * only caller to us is lbs_thread() and we get even when a
1374          * data packet is received */
1375         lbs_deb_enter(LBS_DEB_THREAD);
1376
1377         spin_lock_irqsave(&priv->driver_lock, flags);
1378
1379         if (priv->cur_cmd) {
1380                 lbs_pr_alert( "EXEC_NEXT_CMD: already processing command!\n");
1381                 spin_unlock_irqrestore(&priv->driver_lock, flags);
1382                 ret = -1;
1383                 goto done;
1384         }
1385
1386         if (!list_empty(&priv->cmdpendingq)) {
1387                 cmdnode = list_first_entry(&priv->cmdpendingq,
1388                                            struct cmd_ctrl_node, list);
1389         }
1390
1391         spin_unlock_irqrestore(&priv->driver_lock, flags);
1392
1393         if (cmdnode) {
1394                 cmd = cmdnode->cmdbuf;
1395
1396                 if (is_command_allowed_in_ps(le16_to_cpu(cmd->command))) {
1397                         if ((priv->psstate == PS_STATE_SLEEP) ||
1398                             (priv->psstate == PS_STATE_PRE_SLEEP)) {
1399                                 lbs_deb_host(
1400                                        "EXEC_NEXT_CMD: cannot send cmd 0x%04x in psstate %d\n",
1401                                        le16_to_cpu(cmd->command),
1402                                        priv->psstate);
1403                                 ret = -1;
1404                                 goto done;
1405                         }
1406                         lbs_deb_host("EXEC_NEXT_CMD: OK to send command "
1407                                      "0x%04x in psstate %d\n",
1408                                      le16_to_cpu(cmd->command), priv->psstate);
1409                 } else if (priv->psstate != PS_STATE_FULL_POWER) {
1410                         /*
1411                          * 1. Non-PS command:
1412                          * Queue it. set needtowakeup to TRUE if current state
1413                          * is SLEEP, otherwise call lbs_ps_wakeup to send Exit_PS.
1414                          * 2. PS command but not Exit_PS:
1415                          * Ignore it.
1416                          * 3. PS command Exit_PS:
1417                          * Set needtowakeup to TRUE if current state is SLEEP,
1418                          * otherwise send this command down to firmware
1419                          * immediately.
1420                          */
1421                         if (cmd->command != cpu_to_le16(CMD_802_11_PS_MODE)) {
1422                                 /*  Prepare to send Exit PS,
1423                                  *  this non PS command will be sent later */
1424                                 if ((priv->psstate == PS_STATE_SLEEP)
1425                                     || (priv->psstate == PS_STATE_PRE_SLEEP)
1426                                     ) {
1427                                         /* w/ new scheme, it will not reach here.
1428                                            since it is blocked in main_thread. */
1429                                         priv->needtowakeup = 1;
1430                                 } else
1431                                         lbs_ps_wakeup(priv, 0);
1432
1433                                 ret = 0;
1434                                 goto done;
1435                         } else {
1436                                 /*
1437                                  * PS command. Ignore it if it is not Exit_PS.
1438                                  * otherwise send it down immediately.
1439                                  */
1440                                 struct cmd_ds_802_11_ps_mode *psm = (void *)&cmd[1];
1441
1442                                 lbs_deb_host(
1443                                        "EXEC_NEXT_CMD: PS cmd, action 0x%02x\n",
1444                                        psm->action);
1445                                 if (psm->action !=
1446                                     cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
1447                                         lbs_deb_host(
1448                                                "EXEC_NEXT_CMD: ignore ENTER_PS cmd\n");
1449                                         list_del(&cmdnode->list);
1450                                         spin_lock_irqsave(&priv->driver_lock, flags);
1451                                         lbs_complete_command(priv, cmdnode, 0);
1452                                         spin_unlock_irqrestore(&priv->driver_lock, flags);
1453
1454                                         ret = 0;
1455                                         goto done;
1456                                 }
1457
1458                                 if ((priv->psstate == PS_STATE_SLEEP) ||
1459                                     (priv->psstate == PS_STATE_PRE_SLEEP)) {
1460                                         lbs_deb_host(
1461                                                "EXEC_NEXT_CMD: ignore EXIT_PS cmd in sleep\n");
1462                                         list_del(&cmdnode->list);
1463                                         spin_lock_irqsave(&priv->driver_lock, flags);
1464                                         lbs_complete_command(priv, cmdnode, 0);
1465                                         spin_unlock_irqrestore(&priv->driver_lock, flags);
1466                                         priv->needtowakeup = 1;
1467
1468                                         ret = 0;
1469                                         goto done;
1470                                 }
1471
1472                                 lbs_deb_host(
1473                                        "EXEC_NEXT_CMD: sending EXIT_PS\n");
1474                         }
1475                 }
1476                 list_del(&cmdnode->list);
1477                 lbs_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n",
1478                             le16_to_cpu(cmd->command));
1479                 lbs_submit_command(priv, cmdnode);
1480         } else {
1481                 /*
1482                  * check if in power save mode, if yes, put the device back
1483                  * to PS mode
1484                  */
1485                 if ((priv->psmode != LBS802_11POWERMODECAM) &&
1486                     (priv->psstate == PS_STATE_FULL_POWER) &&
1487                     ((priv->connect_status == LBS_CONNECTED) ||
1488                     (priv->mesh_connect_status == LBS_CONNECTED))) {
1489                         if (priv->secinfo.WPAenabled ||
1490                             priv->secinfo.WPA2enabled) {
1491                                 /* check for valid WPA group keys */
1492                                 if (priv->wpa_mcast_key.len ||
1493                                     priv->wpa_unicast_key.len) {
1494                                         lbs_deb_host(
1495                                                "EXEC_NEXT_CMD: WPA enabled and GTK_SET"
1496                                                " go back to PS_SLEEP");
1497                                         lbs_ps_sleep(priv, 0);
1498                                 }
1499                         } else {
1500                                 lbs_deb_host(
1501                                        "EXEC_NEXT_CMD: cmdpendingq empty, "
1502                                        "go back to PS_SLEEP");
1503                                 lbs_ps_sleep(priv, 0);
1504                         }
1505                 }
1506         }
1507
1508         ret = 0;
1509 done:
1510         lbs_deb_leave(LBS_DEB_THREAD);
1511         return ret;
1512 }
1513
1514 static void lbs_send_confirmsleep(struct lbs_private *priv)
1515 {
1516         unsigned long flags;
1517         int ret;
1518
1519         lbs_deb_enter(LBS_DEB_HOST);
1520         lbs_deb_hex(LBS_DEB_HOST, "sleep confirm", (u8 *) &confirm_sleep,
1521                 sizeof(confirm_sleep));
1522
1523         ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &confirm_sleep,
1524                 sizeof(confirm_sleep));
1525         if (ret) {
1526                 lbs_pr_alert("confirm_sleep failed\n");
1527                 goto out;
1528         }
1529
1530         spin_lock_irqsave(&priv->driver_lock, flags);
1531
1532         /* We don't get a response on the sleep-confirmation */
1533         priv->dnld_sent = DNLD_RES_RECEIVED;
1534
1535         /* If nothing to do, go back to sleep (?) */
1536         if (!__kfifo_len(priv->event_fifo) && !priv->resp_len[priv->resp_idx])
1537                 priv->psstate = PS_STATE_SLEEP;
1538
1539         spin_unlock_irqrestore(&priv->driver_lock, flags);
1540
1541 out:
1542         lbs_deb_leave(LBS_DEB_HOST);
1543 }
1544
1545 void lbs_ps_sleep(struct lbs_private *priv, int wait_option)
1546 {
1547         lbs_deb_enter(LBS_DEB_HOST);
1548
1549         /*
1550          * PS is currently supported only in Infrastructure mode
1551          * Remove this check if it is to be supported in IBSS mode also
1552          */
1553
1554         lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
1555                               CMD_SUBCMD_ENTER_PS, wait_option, 0, NULL);
1556
1557         lbs_deb_leave(LBS_DEB_HOST);
1558 }
1559
1560 /**
1561  *  @brief This function sends Exit_PS command to firmware.
1562  *
1563  *  @param priv         A pointer to struct lbs_private structure
1564  *  @param wait_option  wait response or not
1565  *  @return             n/a
1566  */
1567 void lbs_ps_wakeup(struct lbs_private *priv, int wait_option)
1568 {
1569         __le32 Localpsmode;
1570
1571         lbs_deb_enter(LBS_DEB_HOST);
1572
1573         Localpsmode = cpu_to_le32(LBS802_11POWERMODECAM);
1574
1575         lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
1576                               CMD_SUBCMD_EXIT_PS,
1577                               wait_option, 0, &Localpsmode);
1578
1579         lbs_deb_leave(LBS_DEB_HOST);
1580 }
1581
1582 /**
1583  *  @brief This function checks condition and prepares to
1584  *  send sleep confirm command to firmware if ok.
1585  *
1586  *  @param priv         A pointer to struct lbs_private structure
1587  *  @param psmode       Power Saving mode
1588  *  @return             n/a
1589  */
1590 void lbs_ps_confirm_sleep(struct lbs_private *priv)
1591 {
1592         unsigned long flags =0;
1593         int allowed = 1;
1594
1595         lbs_deb_enter(LBS_DEB_HOST);
1596
1597         spin_lock_irqsave(&priv->driver_lock, flags);
1598         if (priv->dnld_sent) {
1599                 allowed = 0;
1600                 lbs_deb_host("dnld_sent was set\n");
1601         }
1602
1603         /* In-progress command? */
1604         if (priv->cur_cmd) {
1605                 allowed = 0;
1606                 lbs_deb_host("cur_cmd was set\n");
1607         }
1608
1609         /* Pending events or command responses? */
1610         if (__kfifo_len(priv->event_fifo) || priv->resp_len[priv->resp_idx]) {
1611                 allowed = 0;
1612                 lbs_deb_host("pending events or command responses\n");
1613         }
1614         spin_unlock_irqrestore(&priv->driver_lock, flags);
1615
1616         if (allowed) {
1617                 lbs_deb_host("sending lbs_ps_confirm_sleep\n");
1618                 lbs_send_confirmsleep(priv);
1619         } else {
1620                 lbs_deb_host("sleep confirm has been delayed\n");
1621         }
1622
1623         lbs_deb_leave(LBS_DEB_HOST);
1624 }
1625
1626
1627 /**
1628  * @brief Configures the transmission power control functionality.
1629  *
1630  * @param priv          A pointer to struct lbs_private structure
1631  * @param enable        Transmission power control enable
1632  * @param p0            Power level when link quality is good (dBm).
1633  * @param p1            Power level when link quality is fair (dBm).
1634  * @param p2            Power level when link quality is poor (dBm).
1635  * @param usesnr        Use Signal to Noise Ratio in TPC
1636  *
1637  * @return 0 on success
1638  */
1639 int lbs_set_tpc_cfg(struct lbs_private *priv, int enable, int8_t p0, int8_t p1,
1640                 int8_t p2, int usesnr)
1641 {
1642         struct cmd_ds_802_11_tpc_cfg cmd;
1643         int ret;
1644
1645         memset(&cmd, 0, sizeof(cmd));
1646         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1647         cmd.action = cpu_to_le16(CMD_ACT_SET);
1648         cmd.enable = !!enable;
1649         cmd.usesnr = !!usesnr;
1650         cmd.P0 = p0;
1651         cmd.P1 = p1;
1652         cmd.P2 = p2;
1653
1654         ret = lbs_cmd_with_response(priv, CMD_802_11_TPC_CFG, &cmd);
1655
1656         return ret;
1657 }
1658
1659 /**
1660  * @brief Configures the power adaptation settings.
1661  *
1662  * @param priv          A pointer to struct lbs_private structure
1663  * @param enable        Power adaptation enable
1664  * @param p0            Power level for 1, 2, 5.5 and 11 Mbps (dBm).
1665  * @param p1            Power level for 6, 9, 12, 18, 22, 24 and 36 Mbps (dBm).
1666  * @param p2            Power level for 48 and 54 Mbps (dBm).
1667  *
1668  * @return 0 on Success
1669  */
1670
1671 int lbs_set_power_adapt_cfg(struct lbs_private *priv, int enable, int8_t p0,
1672                 int8_t p1, int8_t p2)
1673 {
1674         struct cmd_ds_802_11_pa_cfg cmd;
1675         int ret;
1676
1677         memset(&cmd, 0, sizeof(cmd));
1678         cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1679         cmd.action = cpu_to_le16(CMD_ACT_SET);
1680         cmd.enable = !!enable;
1681         cmd.P0 = p0;
1682         cmd.P1 = p1;
1683         cmd.P2 = p2;
1684
1685         ret = lbs_cmd_with_response(priv, CMD_802_11_PA_CFG , &cmd);
1686
1687         return ret;
1688 }
1689
1690
1691 struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv,
1692         uint16_t command, struct cmd_header *in_cmd, int in_cmd_size,
1693         int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1694         unsigned long callback_arg)
1695 {
1696         struct cmd_ctrl_node *cmdnode;
1697
1698         lbs_deb_enter(LBS_DEB_HOST);
1699
1700         if (priv->surpriseremoved) {
1701                 lbs_deb_host("PREP_CMD: card removed\n");
1702                 cmdnode = ERR_PTR(-ENOENT);
1703                 goto done;
1704         }
1705
1706         if (!lbs_is_cmd_allowed(priv)) {
1707                 cmdnode = ERR_PTR(-EBUSY);
1708                 goto done;
1709         }
1710
1711         cmdnode = lbs_get_cmd_ctrl_node(priv);
1712         if (cmdnode == NULL) {
1713                 lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
1714
1715                 /* Wake up main thread to execute next command */
1716                 wake_up_interruptible(&priv->waitq);
1717                 cmdnode = ERR_PTR(-ENOBUFS);
1718                 goto done;
1719         }
1720
1721         cmdnode->callback = callback;
1722         cmdnode->callback_arg = callback_arg;
1723
1724         /* Copy the incoming command to the buffer */
1725         memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size);
1726
1727         /* Set sequence number, clean result, move to buffer */
1728         priv->seqnum++;
1729         cmdnode->cmdbuf->command = cpu_to_le16(command);
1730         cmdnode->cmdbuf->size    = cpu_to_le16(in_cmd_size);
1731         cmdnode->cmdbuf->seqnum  = cpu_to_le16(priv->seqnum);
1732         cmdnode->cmdbuf->result  = 0;
1733
1734         lbs_deb_host("PREP_CMD: command 0x%04x\n", command);
1735
1736         cmdnode->cmdwaitqwoken = 0;
1737         lbs_queue_cmd(priv, cmdnode);
1738         wake_up_interruptible(&priv->waitq);
1739
1740  done:
1741         lbs_deb_leave_args(LBS_DEB_HOST, "ret %p", cmdnode);
1742         return cmdnode;
1743 }
1744
1745 void lbs_cmd_async(struct lbs_private *priv, uint16_t command,
1746         struct cmd_header *in_cmd, int in_cmd_size)
1747 {
1748         lbs_deb_enter(LBS_DEB_CMD);
1749         __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1750                 lbs_cmd_async_callback, 0);
1751         lbs_deb_leave(LBS_DEB_CMD);
1752 }
1753
1754 int __lbs_cmd(struct lbs_private *priv, uint16_t command,
1755               struct cmd_header *in_cmd, int in_cmd_size,
1756               int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1757               unsigned long callback_arg)
1758 {
1759         struct cmd_ctrl_node *cmdnode;
1760         unsigned long flags;
1761         int ret = 0;
1762
1763         lbs_deb_enter(LBS_DEB_HOST);
1764
1765         cmdnode = __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1766                                   callback, callback_arg);
1767         if (IS_ERR(cmdnode)) {
1768                 ret = PTR_ERR(cmdnode);
1769                 goto done;
1770         }
1771
1772         might_sleep();
1773         wait_event_interruptible(cmdnode->cmdwait_q, cmdnode->cmdwaitqwoken);
1774
1775         spin_lock_irqsave(&priv->driver_lock, flags);
1776         ret = cmdnode->result;
1777         if (ret)
1778                 lbs_pr_info("PREP_CMD: command 0x%04x failed: %d\n",
1779                             command, ret);
1780
1781         __lbs_cleanup_and_insert_cmd(priv, cmdnode);
1782         spin_unlock_irqrestore(&priv->driver_lock, flags);
1783
1784 done:
1785         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1786         return ret;
1787 }
1788 EXPORT_SYMBOL_GPL(__lbs_cmd);