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

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