drivers/net/wireless/mwifiex/cmdevt.c

   1 /*
   2  * Marvell Wireless LAN device driver: commands and events
   3  *
   4  * Copyright (C) 2011, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include "decl.h"
  21 #include "ioctl.h"
  22 #include "util.h"
  23 #include "fw.h"
  24 #include "main.h"
  25 #include "wmm.h"
  26 #include "11n.h"
  27 #include "11ac.h"
  28
  29 /*
  30  * This function initializes a command node.
  31  *
  32  * The actual allocation of the node is not done by this function. It only
  33  * initiates a node by filling it with default parameters. Similarly,
  34  * allocation of the different buffers used (IOCTL buffer, data buffer) are
  35  * not done by this function either.
  36  */
  37 static void
  38 mwifiex_init_cmd_node(struct mwifiex_private *priv,
  39                       struct cmd_ctrl_node *cmd_node,
  40                       u32 cmd_oid, void *data_buf, bool sync)
  41 {
  42         cmd_node->priv = priv;
  43         cmd_node->cmd_oid = cmd_oid;
  44         if (sync) {
  45                 cmd_node->wait_q_enabled = true;
  46                 cmd_node->cmd_wait_q_woken = false;
  47                 cmd_node->condition = &cmd_node->cmd_wait_q_woken;
  48         }
  49         cmd_node->data_buf = data_buf;
  50         cmd_node->cmd_skb = cmd_node->skb;
  51 }
  52
  53 /*
  54  * This function returns a command node from the free queue depending upon
  55  * availability.
  56  */
  57 static struct cmd_ctrl_node *
  58 mwifiex_get_cmd_node(struct mwifiex_adapter *adapter)
  59 {
  60         struct cmd_ctrl_node *cmd_node;
  61         unsigned long flags;
  62
  63         spin_lock_irqsave(&adapter->cmd_free_q_lock, flags);
  64         if (list_empty(&adapter->cmd_free_q)) {
  65                 dev_err(adapter->dev, "GET_CMD_NODE: cmd node not available\n");
  66                 spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
  67                 return NULL;
  68         }
  69         cmd_node = list_first_entry(&adapter->cmd_free_q,
  70                                     struct cmd_ctrl_node, list);
  71         list_del(&cmd_node->list);
  72         spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
  73
  74         return cmd_node;
  75 }
  76
  77 /*
  78  * This function cleans up a command node.
  79  *
  80  * The function resets the fields including the buffer pointers.
  81  * This function does not try to free the buffers. They must be
  82  * freed before calling this function.
  83  *
  84  * This function will however call the receive completion callback
  85  * in case a response buffer is still available before resetting
  86  * the pointer.
  87  */
  88 static void
  89 mwifiex_clean_cmd_node(struct mwifiex_adapter *adapter,
  90                        struct cmd_ctrl_node *cmd_node)
  91 {
  92         cmd_node->cmd_oid = 0;
  93         cmd_node->cmd_flag = 0;
  94         cmd_node->data_buf = NULL;
  95         cmd_node->wait_q_enabled = false;
  96
  97         if (cmd_node->cmd_skb)
  98                 skb_trim(cmd_node->cmd_skb, 0);
  99
 100         if (cmd_node->resp_skb) {
 101                 adapter->if_ops.cmdrsp_complete(adapter, cmd_node->resp_skb);
 102                 cmd_node->resp_skb = NULL;
 103         }
 104 }
 105
 106 /*
 107  * This function sends a host command to the firmware.
 108  *
 109  * The function copies the host command into the driver command
 110  * buffer, which will be transferred to the firmware later by the
 111  * main thread.
 112  */
 113 static int mwifiex_cmd_host_cmd(struct mwifiex_private *priv,
 114                                 struct host_cmd_ds_command *cmd,
 115                                 struct mwifiex_ds_misc_cmd *pcmd_ptr)
 116 {
 117         /* Copy the HOST command to command buffer */
 118         memcpy(cmd, pcmd_ptr->cmd, pcmd_ptr->len);
 119         dev_dbg(priv->adapter->dev, "cmd: host cmd size = %d\n", pcmd_ptr->len);
 120         return 0;
 121 }
 122
 123 /*
 124  * This function downloads a command to the firmware.
 125  *
 126  * The function performs sanity tests, sets the command sequence
 127  * number and size, converts the header fields to CPU format before
 128  * sending. Afterwards, it logs the command ID and action for debugging
 129  * and sets up the command timeout timer.
 130  */
 131 static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
 132                                   struct cmd_ctrl_node *cmd_node)
 133 {
 134
 135         struct mwifiex_adapter *adapter = priv->adapter;
 136         int ret;
 137         struct host_cmd_ds_command *host_cmd;
 138         uint16_t cmd_code;
 139         uint16_t cmd_size;
 140         struct timeval tstamp;
 141         unsigned long flags;
 142         __le32 tmp;
 143
 144         if (!adapter || !cmd_node)
 145                 return -1;
 146
 147         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 148
 149         /* Sanity test */
 150         if (host_cmd == NULL || host_cmd->size == 0) {
 151                 dev_err(adapter->dev, "DNLD_CMD: host_cmd is null"
 152                         " or cmd size is 0, not sending\n");
 153                 if (cmd_node->wait_q_enabled)
 154                         adapter->cmd_wait_q.status = -1;
 155                 mwifiex_recycle_cmd_node(adapter, cmd_node);
 156                 return -1;
 157         }
 158
 159         cmd_code = le16_to_cpu(host_cmd->command);
 160         cmd_size = le16_to_cpu(host_cmd->size);
 161
 162         if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET &&
 163             cmd_code != HostCmd_CMD_FUNC_SHUTDOWN &&
 164             cmd_code != HostCmd_CMD_FUNC_INIT) {
 165                 dev_err(adapter->dev,
 166                         "DNLD_CMD: FW in reset state, ignore cmd %#x\n",
 167                         cmd_code);
 168                 if (cmd_node->wait_q_enabled)
 169                         mwifiex_complete_cmd(adapter, cmd_node);
 170                 mwifiex_recycle_cmd_node(adapter, cmd_node);
 171                 queue_work(adapter->workqueue, &adapter->main_work);
 172                 return -1;
 173         }
 174
 175         /* Set command sequence number */
 176         adapter->seq_num++;
 177         host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO
 178                                         (adapter->seq_num,
 179                                          cmd_node->priv->bss_num,
 180                                          cmd_node->priv->bss_type));
 181
 182         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 183         adapter->curr_cmd = cmd_node;
 184         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 185
 186         /* Adjust skb length */
 187         if (cmd_node->cmd_skb->len > cmd_size)
 188                 /*
 189                  * cmd_size is less than sizeof(struct host_cmd_ds_command).
 190                  * Trim off the unused portion.
 191                  */
 192                 skb_trim(cmd_node->cmd_skb, cmd_size);
 193         else if (cmd_node->cmd_skb->len < cmd_size)
 194                 /*
 195                  * cmd_size is larger than sizeof(struct host_cmd_ds_command)
 196                  * because we have appended custom IE TLV. Increase skb length
 197                  * accordingly.
 198                  */
 199                 skb_put(cmd_node->cmd_skb, cmd_size - cmd_node->cmd_skb->len);
 200
 201         do_gettimeofday(&tstamp);
 202         dev_dbg(adapter->dev, "cmd: DNLD_CMD: (%lu.%lu): %#x, act %#x, len %d,"
 203                 " seqno %#x\n",
 204                 tstamp.tv_sec, tstamp.tv_usec, cmd_code,
 205                 le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN)), cmd_size,
 206                 le16_to_cpu(host_cmd->seq_num));
 207
 208         if (adapter->iface_type == MWIFIEX_USB) {
 209                 tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
 210                 skb_push(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
 211                 memcpy(cmd_node->cmd_skb->data, &tmp, MWIFIEX_TYPE_LEN);
 212                 adapter->cmd_sent = true;
 213                 ret = adapter->if_ops.host_to_card(adapter,
 214                                                    MWIFIEX_USB_EP_CMD_EVENT,
 215                                                    cmd_node->cmd_skb, NULL);
 216                 skb_pull(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
 217                 if (ret == -EBUSY)
 218                         cmd_node->cmd_skb = NULL;
 219         } else {
 220                 skb_push(cmd_node->cmd_skb, INTF_HEADER_LEN);
 221                 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
 222                                                    cmd_node->cmd_skb, NULL);
 223                 skb_pull(cmd_node->cmd_skb, INTF_HEADER_LEN);
 224         }
 225
 226         if (ret == -1) {
 227                 dev_err(adapter->dev, "DNLD_CMD: host to card failed\n");
 228                 if (adapter->iface_type == MWIFIEX_USB)
 229                         adapter->cmd_sent = false;
 230                 if (cmd_node->wait_q_enabled)
 231                         adapter->cmd_wait_q.status = -1;
 232                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 233
 234                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 235                 adapter->curr_cmd = NULL;
 236                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 237
 238                 adapter->dbg.num_cmd_host_to_card_failure++;
 239                 return -1;
 240         }
 241
 242         /* Save the last command id and action to debug log */
 243         adapter->dbg.last_cmd_index =
 244                         (adapter->dbg.last_cmd_index + 1) % DBG_CMD_NUM;
 245         adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index] = cmd_code;
 246         adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index] =
 247                         le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN));
 248
 249         /* Clear BSS_NO_BITS from HostCmd */
 250         cmd_code &= HostCmd_CMD_ID_MASK;
 251
 252         /* Setup the timer after transmit command */
 253         mod_timer(&adapter->cmd_timer,
 254                   jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
 255
 256         return 0;
 257 }
 258
 259 /*
 260  * This function downloads a sleep confirm command to the firmware.
 261  *
 262  * The function performs sanity tests, sets the command sequence
 263  * number and size, converts the header fields to CPU format before
 264  * sending.
 265  *
 266  * No responses are needed for sleep confirm command.
 267  */
 268 static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
 269 {
 270         int ret;
 271         struct mwifiex_private *priv;
 272         struct mwifiex_opt_sleep_confirm *sleep_cfm_buf =
 273                                 (struct mwifiex_opt_sleep_confirm *)
 274                                                 adapter->sleep_cfm->data;
 275         struct sk_buff *sleep_cfm_tmp;
 276         __le32 tmp;
 277
 278         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 279
 280         adapter->seq_num++;
 281         sleep_cfm_buf->seq_num =
 282                 cpu_to_le16((HostCmd_SET_SEQ_NO_BSS_INFO
 283                                         (adapter->seq_num, priv->bss_num,
 284                                          priv->bss_type)));
 285
 286         if (adapter->iface_type == MWIFIEX_USB) {
 287                 sleep_cfm_tmp =
 288                         dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
 289                                       + MWIFIEX_TYPE_LEN);
 290                 skb_put(sleep_cfm_tmp, sizeof(struct mwifiex_opt_sleep_confirm)
 291                         + MWIFIEX_TYPE_LEN);
 292                 tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
 293                 memcpy(sleep_cfm_tmp->data, &tmp, MWIFIEX_TYPE_LEN);
 294                 memcpy(sleep_cfm_tmp->data + MWIFIEX_TYPE_LEN,
 295                        adapter->sleep_cfm->data,
 296                        sizeof(struct mwifiex_opt_sleep_confirm));
 297                 ret = adapter->if_ops.host_to_card(adapter,
 298                                                    MWIFIEX_USB_EP_CMD_EVENT,
 299                                                    sleep_cfm_tmp, NULL);
 300                 if (ret != -EBUSY)
 301                         dev_kfree_skb_any(sleep_cfm_tmp);
 302         } else {
 303                 skb_push(adapter->sleep_cfm, INTF_HEADER_LEN);
 304                 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
 305                                                    adapter->sleep_cfm, NULL);
 306                 skb_pull(adapter->sleep_cfm, INTF_HEADER_LEN);
 307         }
 308
 309         if (ret == -1) {
 310                 dev_err(adapter->dev, "SLEEP_CFM: failed\n");
 311                 adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure++;
 312                 return -1;
 313         }
 314         if (GET_BSS_ROLE(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY))
 315             == MWIFIEX_BSS_ROLE_STA) {
 316                 if (!le16_to_cpu(sleep_cfm_buf->resp_ctrl))
 317                         /* Response is not needed for sleep
 318                            confirm command */
 319                         adapter->ps_state = PS_STATE_SLEEP;
 320                 else
 321                         adapter->ps_state = PS_STATE_SLEEP_CFM;
 322
 323                 if (!le16_to_cpu(sleep_cfm_buf->resp_ctrl) &&
 324                     (adapter->is_hs_configured &&
 325                      !adapter->sleep_period.period)) {
 326                         adapter->pm_wakeup_card_req = true;
 327                         mwifiex_hs_activated_event(mwifiex_get_priv
 328                                         (adapter, MWIFIEX_BSS_ROLE_STA), true);
 329                 }
 330         }
 331
 332         return ret;
 333 }
 334
 335 /*
 336  * This function allocates the command buffers and links them to
 337  * the command free queue.
 338  *
 339  * The driver uses a pre allocated number of command buffers, which
 340  * are created at driver initializations and freed at driver cleanup.
 341  * Every command needs to obtain a command buffer from this pool before
 342  * it can be issued. The command free queue lists the command buffers
 343  * currently free to use, while the command pending queue lists the
 344  * command buffers already in use and awaiting handling. Command buffers
 345  * are returned to the free queue after use.
 346  */
 347 int mwifiex_alloc_cmd_buffer(struct mwifiex_adapter *adapter)
 348 {
 349         struct cmd_ctrl_node *cmd_array;
 350         u32 i;
 351
 352         /* Allocate and initialize struct cmd_ctrl_node */
 353         cmd_array = kcalloc(MWIFIEX_NUM_OF_CMD_BUFFER,
 354                             sizeof(struct cmd_ctrl_node), GFP_KERNEL);
 355         if (!cmd_array)
 356                 return -ENOMEM;
 357
 358         adapter->cmd_pool = cmd_array;
 359
 360         /* Allocate and initialize command buffers */
 361         for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) {
 362                 cmd_array[i].skb = dev_alloc_skb(MWIFIEX_SIZE_OF_CMD_BUFFER);
 363                 if (!cmd_array[i].skb) {
 364                         dev_err(adapter->dev, "ALLOC_CMD_BUF: out of memory\n");
 365                         return -1;
 366                 }
 367         }
 368
 369         for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++)
 370                 mwifiex_insert_cmd_to_free_q(adapter, &cmd_array[i]);
 371
 372         return 0;
 373 }
 374
 375 /*
 376  * This function frees the command buffers.
 377  *
 378  * The function calls the completion callback for all the command
 379  * buffers that still have response buffers associated with them.
 380  */
 381 int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
 382 {
 383         struct cmd_ctrl_node *cmd_array;
 384         u32 i;
 385
 386         /* Need to check if cmd pool is allocated or not */
 387         if (!adapter->cmd_pool) {
 388                 dev_dbg(adapter->dev, "info: FREE_CMD_BUF: cmd_pool is null\n");
 389                 return 0;
 390         }
 391
 392         cmd_array = adapter->cmd_pool;
 393
 394         /* Release shared memory buffers */
 395         for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) {
 396                 if (cmd_array[i].skb) {
 397                         dev_dbg(adapter->dev, "cmd: free cmd buffer %d\n", i);
 398                         dev_kfree_skb_any(cmd_array[i].skb);
 399                 }
 400                 if (!cmd_array[i].resp_skb)
 401                         continue;
 402
 403                 if (adapter->iface_type == MWIFIEX_USB)
 404                         adapter->if_ops.cmdrsp_complete(adapter,
 405                                                         cmd_array[i].resp_skb);
 406                 else
 407                         dev_kfree_skb_any(cmd_array[i].resp_skb);
 408         }
 409         /* Release struct cmd_ctrl_node */
 410         if (adapter->cmd_pool) {
 411                 dev_dbg(adapter->dev, "cmd: free cmd pool\n");
 412                 kfree(adapter->cmd_pool);
 413                 adapter->cmd_pool = NULL;
 414         }
 415
 416         return 0;
 417 }
 418
 419 /*
 420  * This function handles events generated by firmware.
 421  *
 422  * Event body of events received from firmware are not used (though they are
 423  * saved), only the event ID is used. Some events are re-invoked by
 424  * the driver, with a new event body.
 425  *
 426  * After processing, the function calls the completion callback
 427  * for cleanup.
 428  */
 429 int mwifiex_process_event(struct mwifiex_adapter *adapter)
 430 {
 431         int ret;
 432         struct mwifiex_private *priv =
 433                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 434         struct sk_buff *skb = adapter->event_skb;
 435         u32 eventcause = adapter->event_cause;
 436         struct timeval tstamp;
 437         struct mwifiex_rxinfo *rx_info;
 438
 439         /* Save the last event to debug log */
 440         adapter->dbg.last_event_index =
 441                         (adapter->dbg.last_event_index + 1) % DBG_CMD_NUM;
 442         adapter->dbg.last_event[adapter->dbg.last_event_index] =
 443                                                         (u16) eventcause;
 444
 445         /* Get BSS number and corresponding priv */
 446         priv = mwifiex_get_priv_by_id(adapter, EVENT_GET_BSS_NUM(eventcause),
 447                                       EVENT_GET_BSS_TYPE(eventcause));
 448         if (!priv)
 449                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 450         /* Clear BSS_NO_BITS from event */
 451         eventcause &= EVENT_ID_MASK;
 452         adapter->event_cause = eventcause;
 453
 454         if (skb) {
 455                 rx_info = MWIFIEX_SKB_RXCB(skb);
 456                 rx_info->bss_num = priv->bss_num;
 457                 rx_info->bss_type = priv->bss_type;
 458         }
 459
 460         if (eventcause != EVENT_PS_SLEEP && eventcause != EVENT_PS_AWAKE) {
 461                 do_gettimeofday(&tstamp);
 462                 dev_dbg(adapter->dev, "event: %lu.%lu: cause: %#x\n",
 463                         tstamp.tv_sec, tstamp.tv_usec, eventcause);
 464         } else {
 465                 /* Handle PS_SLEEP/AWAKE events on STA */
 466                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
 467                 if (!priv)
 468                         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 469         }
 470
 471         if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP)
 472                 ret = mwifiex_process_uap_event(priv);
 473         else
 474                 ret = mwifiex_process_sta_event(priv);
 475
 476         adapter->event_cause = 0;
 477         adapter->event_skb = NULL;
 478         adapter->if_ops.event_complete(adapter, skb);
 479
 480         return ret;
 481 }
 482
 483 /*
 484  * This function prepares a command and send it to the firmware.
 485  *
 486  * Preparation includes -
 487  *      - Sanity tests to make sure the card is still present or the FW
 488  *        is not reset
 489  *      - Getting a new command node from the command free queue
 490  *      - Initializing the command node for default parameters
 491  *      - Fill up the non-default parameters and buffer pointers
 492  *      - Add the command to pending queue
 493  */
 494 int mwifiex_send_cmd(struct mwifiex_private *priv, u16 cmd_no,
 495                      u16 cmd_action, u32 cmd_oid, void *data_buf, bool sync)
 496 {
 497         int ret;
 498         struct mwifiex_adapter *adapter = priv->adapter;
 499         struct cmd_ctrl_node *cmd_node;
 500         struct host_cmd_ds_command *cmd_ptr;
 501
 502         if (!adapter) {
 503                 pr_err("PREP_CMD: adapter is NULL\n");
 504                 return -1;
 505         }
 506
 507         if (adapter->is_suspended) {
 508                 dev_err(adapter->dev, "PREP_CMD: device in suspended state\n");
 509                 return -1;
 510         }
 511
 512         if (adapter->hs_enabling && cmd_no != HostCmd_CMD_802_11_HS_CFG_ENH) {
 513                 dev_err(adapter->dev, "PREP_CMD: host entering sleep state\n");
 514                 return -1;
 515         }
 516
 517         if (adapter->surprise_removed) {
 518                 dev_err(adapter->dev, "PREP_CMD: card is removed\n");
 519                 return -1;
 520         }
 521
 522         if (adapter->is_cmd_timedout) {
 523                 dev_err(adapter->dev, "PREP_CMD: FW is in bad state\n");
 524                 return -1;
 525         }
 526
 527         if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET) {
 528                 if (cmd_no != HostCmd_CMD_FUNC_INIT) {
 529                         dev_err(adapter->dev, "PREP_CMD: FW in reset state\n");
 530                         return -1;
 531                 }
 532         }
 533
 534         /* Get a new command node */
 535         cmd_node = mwifiex_get_cmd_node(adapter);
 536
 537         if (!cmd_node) {
 538                 dev_err(adapter->dev, "PREP_CMD: no free cmd node\n");
 539                 return -1;
 540         }
 541
 542         /* Initialize the command node */
 543         mwifiex_init_cmd_node(priv, cmd_node, cmd_oid, data_buf, sync);
 544
 545         if (!cmd_node->cmd_skb) {
 546                 dev_err(adapter->dev, "PREP_CMD: no free cmd buf\n");
 547                 return -1;
 548         }
 549
 550         memset(skb_put(cmd_node->cmd_skb, sizeof(struct host_cmd_ds_command)),
 551                0, sizeof(struct host_cmd_ds_command));
 552
 553         cmd_ptr = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 554         cmd_ptr->command = cpu_to_le16(cmd_no);
 555         cmd_ptr->result = 0;
 556
 557         /* Prepare command */
 558         if (cmd_no) {
 559                 switch (cmd_no) {
 560                 case HostCmd_CMD_UAP_SYS_CONFIG:
 561                 case HostCmd_CMD_UAP_BSS_START:
 562                 case HostCmd_CMD_UAP_BSS_STOP:
 563                 case HostCmd_CMD_UAP_STA_DEAUTH:
 564                         ret = mwifiex_uap_prepare_cmd(priv, cmd_no, cmd_action,
 565                                                       cmd_oid, data_buf,
 566                                                       cmd_ptr);
 567                         break;
 568                 default:
 569                         ret = mwifiex_sta_prepare_cmd(priv, cmd_no, cmd_action,
 570                                                       cmd_oid, data_buf,
 571                                                       cmd_ptr);
 572                         break;
 573                 }
 574         } else {
 575                 ret = mwifiex_cmd_host_cmd(priv, cmd_ptr, data_buf);
 576                 cmd_node->cmd_flag |= CMD_F_HOSTCMD;
 577         }
 578
 579         /* Return error, since the command preparation failed */
 580         if (ret) {
 581                 dev_err(adapter->dev, "PREP_CMD: cmd %#x preparation failed\n",
 582                         cmd_no);
 583                 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 584                 return -1;
 585         }
 586
 587         /* Send command */
 588         if (cmd_no == HostCmd_CMD_802_11_SCAN ||
 589             cmd_no == HostCmd_CMD_802_11_SCAN_EXT) {
 590                 mwifiex_queue_scan_cmd(priv, cmd_node);
 591         } else {
 592                 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true);
 593                 queue_work(adapter->workqueue, &adapter->main_work);
 594                 if (cmd_node->wait_q_enabled)
 595                         ret = mwifiex_wait_queue_complete(adapter, cmd_node);
 596         }
 597
 598         return ret;
 599 }
 600
 601 /*
 602  * This function returns a command to the command free queue.
 603  *
 604  * The function also calls the completion callback if required, before
 605  * cleaning the command node and re-inserting it into the free queue.
 606  */
 607 void
 608 mwifiex_insert_cmd_to_free_q(struct mwifiex_adapter *adapter,
 609                              struct cmd_ctrl_node *cmd_node)
 610 {
 611         unsigned long flags;
 612
 613         if (!cmd_node)
 614                 return;
 615
 616         if (cmd_node->wait_q_enabled)
 617                 mwifiex_complete_cmd(adapter, cmd_node);
 618         /* Clean the node */
 619         mwifiex_clean_cmd_node(adapter, cmd_node);
 620
 621         /* Insert node into cmd_free_q */
 622         spin_lock_irqsave(&adapter->cmd_free_q_lock, flags);
 623         list_add_tail(&cmd_node->list, &adapter->cmd_free_q);
 624         spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
 625 }
 626
 627 /* This function reuses a command node. */
 628 void mwifiex_recycle_cmd_node(struct mwifiex_adapter *adapter,
 629                               struct cmd_ctrl_node *cmd_node)
 630 {
 631         struct host_cmd_ds_command *host_cmd = (void *)cmd_node->cmd_skb->data;
 632
 633         mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 634
 635         atomic_dec(&adapter->cmd_pending);
 636         dev_dbg(adapter->dev, "cmd: FREE_CMD: cmd=%#x, cmd_pending=%d\n",
 637                 le16_to_cpu(host_cmd->command),
 638                 atomic_read(&adapter->cmd_pending));
 639 }
 640
 641 /*
 642  * This function queues a command to the command pending queue.
 643  *
 644  * This in effect adds the command to the command list to be executed.
 645  * Exit PS command is handled specially, by placing it always to the
 646  * front of the command queue.
 647  */
 648 void
 649 mwifiex_insert_cmd_to_pending_q(struct mwifiex_adapter *adapter,
 650                                 struct cmd_ctrl_node *cmd_node, u32 add_tail)
 651 {
 652         struct host_cmd_ds_command *host_cmd = NULL;
 653         u16 command;
 654         unsigned long flags;
 655
 656         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 657         if (!host_cmd) {
 658                 dev_err(adapter->dev, "QUEUE_CMD: host_cmd is NULL\n");
 659                 return;
 660         }
 661
 662         command = le16_to_cpu(host_cmd->command);
 663
 664         /* Exit_PS command needs to be queued in the header always. */
 665         if (command == HostCmd_CMD_802_11_PS_MODE_ENH) {
 666                 struct host_cmd_ds_802_11_ps_mode_enh *pm =
 667                                                 &host_cmd->params.psmode_enh;
 668                 if ((le16_to_cpu(pm->action) == DIS_PS) ||
 669                     (le16_to_cpu(pm->action) == DIS_AUTO_PS)) {
 670                         if (adapter->ps_state != PS_STATE_AWAKE)
 671                                 add_tail = false;
 672                 }
 673         }
 674
 675         spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
 676         if (add_tail)
 677                 list_add_tail(&cmd_node->list, &adapter->cmd_pending_q);
 678         else
 679                 list_add(&cmd_node->list, &adapter->cmd_pending_q);
 680         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
 681
 682         atomic_inc(&adapter->cmd_pending);
 683         dev_dbg(adapter->dev, "cmd: QUEUE_CMD: cmd=%#x, cmd_pending=%d\n",
 684                 command, atomic_read(&adapter->cmd_pending));
 685 }
 686
 687 /*
 688  * This function executes the next command in command pending queue.
 689  *
 690  * This function will fail if a command is already in processing stage,
 691  * otherwise it will dequeue the first command from the command pending
 692  * queue and send to the firmware.
 693  *
 694  * If the device is currently in host sleep mode, any commands, except the
 695  * host sleep configuration command will de-activate the host sleep. For PS
 696  * mode, the function will put the firmware back to sleep if applicable.
 697  */
 698 int mwifiex_exec_next_cmd(struct mwifiex_adapter *adapter)
 699 {
 700         struct mwifiex_private *priv;
 701         struct cmd_ctrl_node *cmd_node;
 702         int ret = 0;
 703         struct host_cmd_ds_command *host_cmd;
 704         unsigned long cmd_flags;
 705         unsigned long cmd_pending_q_flags;
 706
 707         /* Check if already in processing */
 708         if (adapter->curr_cmd) {
 709                 dev_err(adapter->dev, "EXEC_NEXT_CMD: cmd in processing\n");
 710                 return -1;
 711         }
 712
 713         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
 714         /* Check if any command is pending */
 715         spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
 716         if (list_empty(&adapter->cmd_pending_q)) {
 717                 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 718                                        cmd_pending_q_flags);
 719                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 720                 return 0;
 721         }
 722         cmd_node = list_first_entry(&adapter->cmd_pending_q,
 723                                     struct cmd_ctrl_node, list);
 724         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 725                                cmd_pending_q_flags);
 726
 727         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 728         priv = cmd_node->priv;
 729
 730         if (adapter->ps_state != PS_STATE_AWAKE) {
 731                 dev_err(adapter->dev, "%s: cannot send cmd in sleep state,"
 732                                 " this should not happen\n", __func__);
 733                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 734                 return ret;
 735         }
 736
 737         spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
 738         list_del(&cmd_node->list);
 739         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 740                                cmd_pending_q_flags);
 741
 742         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 743         ret = mwifiex_dnld_cmd_to_fw(priv, cmd_node);
 744         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 745         /* Any command sent to the firmware when host is in sleep
 746          * mode should de-configure host sleep. We should skip the
 747          * host sleep configuration command itself though
 748          */
 749         if (priv && (host_cmd->command !=
 750              cpu_to_le16(HostCmd_CMD_802_11_HS_CFG_ENH))) {
 751                 if (adapter->hs_activated) {
 752                         adapter->is_hs_configured = false;
 753                         mwifiex_hs_activated_event(priv, false);
 754                 }
 755         }
 756
 757         return ret;
 758 }
 759
 760 /*
 761  * This function handles the command response.
 762  *
 763  * After processing, the function cleans the command node and puts
 764  * it back to the command free queue.
 765  */
 766 int mwifiex_process_cmdresp(struct mwifiex_adapter *adapter)
 767 {
 768         struct host_cmd_ds_command *resp;
 769         struct mwifiex_private *priv =
 770                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 771         int ret = 0;
 772         uint16_t orig_cmdresp_no;
 773         uint16_t cmdresp_no;
 774         uint16_t cmdresp_result;
 775         struct timeval tstamp;
 776         unsigned long flags;
 777
 778         /* Now we got response from FW, cancel the command timer */
 779         del_timer_sync(&adapter->cmd_timer);
 780
 781         if (!adapter->curr_cmd || !adapter->curr_cmd->resp_skb) {
 782                 resp = (struct host_cmd_ds_command *) adapter->upld_buf;
 783                 dev_err(adapter->dev, "CMD_RESP: NULL curr_cmd, %#x\n",
 784                         le16_to_cpu(resp->command));
 785                 return -1;
 786         }
 787
 788         adapter->is_cmd_timedout = 0;
 789
 790         resp = (struct host_cmd_ds_command *) adapter->curr_cmd->resp_skb->data;
 791         if (adapter->curr_cmd->cmd_flag & CMD_F_CANCELED) {
 792                 dev_err(adapter->dev, "CMD_RESP: %#x been canceled\n",
 793                         le16_to_cpu(resp->command));
 794                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 795                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 796                 adapter->curr_cmd = NULL;
 797                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 798                 return -1;
 799         }
 800
 801         if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
 802                 /* Copy original response back to response buffer */
 803                 struct mwifiex_ds_misc_cmd *hostcmd;
 804                 uint16_t size = le16_to_cpu(resp->size);
 805                 dev_dbg(adapter->dev, "info: host cmd resp size = %d\n", size);
 806                 size = min_t(u16, size, MWIFIEX_SIZE_OF_CMD_BUFFER);
 807                 if (adapter->curr_cmd->data_buf) {
 808                         hostcmd = adapter->curr_cmd->data_buf;
 809                         hostcmd->len = size;
 810                         memcpy(hostcmd->cmd, resp, size);
 811                 }
 812         }
 813         orig_cmdresp_no = le16_to_cpu(resp->command);
 814
 815         /* Get BSS number and corresponding priv */
 816         priv = mwifiex_get_priv_by_id(adapter,
 817                              HostCmd_GET_BSS_NO(le16_to_cpu(resp->seq_num)),
 818                              HostCmd_GET_BSS_TYPE(le16_to_cpu(resp->seq_num)));
 819         if (!priv)
 820                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 821         /* Clear RET_BIT from HostCmd */
 822         resp->command = cpu_to_le16(orig_cmdresp_no & HostCmd_CMD_ID_MASK);
 823
 824         cmdresp_no = le16_to_cpu(resp->command);
 825         cmdresp_result = le16_to_cpu(resp->result);
 826
 827         /* Save the last command response to debug log */
 828         adapter->dbg.last_cmd_resp_index =
 829                         (adapter->dbg.last_cmd_resp_index + 1) % DBG_CMD_NUM;
 830         adapter->dbg.last_cmd_resp_id[adapter->dbg.last_cmd_resp_index] =
 831                                                                 orig_cmdresp_no;
 832
 833         do_gettimeofday(&tstamp);
 834         dev_dbg(adapter->dev, "cmd: CMD_RESP: (%lu.%lu): 0x%x, result %d,"
 835                 " len %d, seqno 0x%x\n",
 836                tstamp.tv_sec, tstamp.tv_usec, orig_cmdresp_no, cmdresp_result,
 837                le16_to_cpu(resp->size), le16_to_cpu(resp->seq_num));
 838
 839         if (!(orig_cmdresp_no & HostCmd_RET_BIT)) {
 840                 dev_err(adapter->dev, "CMD_RESP: invalid cmd resp\n");
 841                 if (adapter->curr_cmd->wait_q_enabled)
 842                         adapter->cmd_wait_q.status = -1;
 843
 844                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 845                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 846                 adapter->curr_cmd = NULL;
 847                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 848                 return -1;
 849         }
 850
 851         if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
 852                 adapter->curr_cmd->cmd_flag &= ~CMD_F_HOSTCMD;
 853                 if ((cmdresp_result == HostCmd_RESULT_OK) &&
 854                     (cmdresp_no == HostCmd_CMD_802_11_HS_CFG_ENH))
 855                         ret = mwifiex_ret_802_11_hs_cfg(priv, resp);
 856         } else {
 857                 /* handle response */
 858                 ret = mwifiex_process_sta_cmdresp(priv, cmdresp_no, resp);
 859         }
 860
 861         /* Check init command response */
 862         if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING) {
 863                 if (ret) {
 864                         dev_err(adapter->dev, "%s: cmd %#x failed during "
 865                                 "initialization\n", __func__, cmdresp_no);
 866                         mwifiex_init_fw_complete(adapter);
 867                         return -1;
 868                 } else if (adapter->last_init_cmd == cmdresp_no)
 869                         adapter->hw_status = MWIFIEX_HW_STATUS_INIT_DONE;
 870         }
 871
 872         if (adapter->curr_cmd) {
 873                 if (adapter->curr_cmd->wait_q_enabled)
 874                         adapter->cmd_wait_q.status = ret;
 875
 876                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 877
 878                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 879                 adapter->curr_cmd = NULL;
 880                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 881         }
 882
 883         return ret;
 884 }
 885
 886 /*
 887  * This function handles the timeout of command sending.
 888  *
 889  * It will re-send the same command again.
 890  */
 891 void
 892 mwifiex_cmd_timeout_func(unsigned long function_context)
 893 {
 894         struct mwifiex_adapter *adapter =
 895                 (struct mwifiex_adapter *) function_context;
 896         struct cmd_ctrl_node *cmd_node;
 897         struct timeval tstamp;
 898
 899         adapter->is_cmd_timedout = 1;
 900         if (!adapter->curr_cmd) {
 901                 dev_dbg(adapter->dev, "cmd: empty curr_cmd\n");
 902                 return;
 903         }
 904         cmd_node = adapter->curr_cmd;
 905         if (cmd_node) {
 906                 adapter->dbg.timeout_cmd_id =
 907                         adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index];
 908                 adapter->dbg.timeout_cmd_act =
 909                         adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index];
 910                 do_gettimeofday(&tstamp);
 911                 dev_err(adapter->dev,
 912                         "%s: Timeout cmd id (%lu.%lu) = %#x, act = %#x\n",
 913                         __func__, tstamp.tv_sec, tstamp.tv_usec,
 914                         adapter->dbg.timeout_cmd_id,
 915                         adapter->dbg.timeout_cmd_act);
 916
 917                 dev_err(adapter->dev, "num_data_h2c_failure = %d\n",
 918                         adapter->dbg.num_tx_host_to_card_failure);
 919                 dev_err(adapter->dev, "num_cmd_h2c_failure = %d\n",
 920                         adapter->dbg.num_cmd_host_to_card_failure);
 921
 922                 dev_err(adapter->dev, "is_cmd_timedout = %d\n",
 923                         adapter->is_cmd_timedout);
 924                 dev_err(adapter->dev, "num_tx_timeout = %d\n",
 925                         adapter->dbg.num_tx_timeout);
 926
 927                 dev_err(adapter->dev, "last_cmd_index = %d\n",
 928                         adapter->dbg.last_cmd_index);
 929                 dev_err(adapter->dev, "last_cmd_id: %*ph\n",
 930                         (int)sizeof(adapter->dbg.last_cmd_id),
 931                         adapter->dbg.last_cmd_id);
 932                 dev_err(adapter->dev, "last_cmd_act: %*ph\n",
 933                         (int)sizeof(adapter->dbg.last_cmd_act),
 934                         adapter->dbg.last_cmd_act);
 935
 936                 dev_err(adapter->dev, "last_cmd_resp_index = %d\n",
 937                         adapter->dbg.last_cmd_resp_index);
 938                 dev_err(adapter->dev, "last_cmd_resp_id: %*ph\n",
 939                         (int)sizeof(adapter->dbg.last_cmd_resp_id),
 940                         adapter->dbg.last_cmd_resp_id);
 941
 942                 dev_err(adapter->dev, "last_event_index = %d\n",
 943                         adapter->dbg.last_event_index);
 944                 dev_err(adapter->dev, "last_event: %*ph\n",
 945                         (int)sizeof(adapter->dbg.last_event),
 946                         adapter->dbg.last_event);
 947
 948                 dev_err(adapter->dev, "data_sent=%d cmd_sent=%d\n",
 949                         adapter->data_sent, adapter->cmd_sent);
 950
 951                 dev_err(adapter->dev, "ps_mode=%d ps_state=%d\n",
 952                         adapter->ps_mode, adapter->ps_state);
 953
 954                 if (cmd_node->wait_q_enabled) {
 955                         adapter->cmd_wait_q.status = -ETIMEDOUT;
 956                         wake_up_interruptible(&adapter->cmd_wait_q.wait);
 957                         mwifiex_cancel_pending_ioctl(adapter);
 958                 }
 959         }
 960         if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING)
 961                 mwifiex_init_fw_complete(adapter);
 962
 963         if (adapter->if_ops.card_reset)
 964                 adapter->if_ops.card_reset(adapter);
 965 }
 966
 967 /*
 968  * This function cancels all the pending commands.
 969  *
 970  * The current command, all commands in command pending queue and all scan
 971  * commands in scan pending queue are cancelled. All the completion callbacks
 972  * are called with failure status to ensure cleanup.
 973  */
 974 void
 975 mwifiex_cancel_all_pending_cmd(struct mwifiex_adapter *adapter)
 976 {
 977         struct cmd_ctrl_node *cmd_node = NULL, *tmp_node;
 978         unsigned long flags, cmd_flags;
 979         struct mwifiex_private *priv;
 980         int i;
 981
 982         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
 983         /* Cancel current cmd */
 984         if ((adapter->curr_cmd) && (adapter->curr_cmd->wait_q_enabled)) {
 985                 adapter->curr_cmd->wait_q_enabled = false;
 986                 adapter->cmd_wait_q.status = -1;
 987                 mwifiex_complete_cmd(adapter, adapter->curr_cmd);
 988         }
 989         /* Cancel all pending command */
 990         spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
 991         list_for_each_entry_safe(cmd_node, tmp_node,
 992                                  &adapter->cmd_pending_q, list) {
 993                 list_del(&cmd_node->list);
 994                 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
 995
 996                 if (cmd_node->wait_q_enabled) {
 997                         adapter->cmd_wait_q.status = -1;
 998                         mwifiex_complete_cmd(adapter, cmd_node);
 999                         cmd_node->wait_q_enabled = false;
1000                 }
1001                 mwifiex_recycle_cmd_node(adapter, cmd_node);
1002                 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1003         }
1004         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1005         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1006
1007         /* Cancel all pending scan command */
1008         spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
1009         list_for_each_entry_safe(cmd_node, tmp_node,
1010                                  &adapter->scan_pending_q, list) {
1011                 list_del(&cmd_node->list);
1012                 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
1013
1014                 cmd_node->wait_q_enabled = false;
1015                 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
1016                 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
1017         }
1018         spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
1019
1020         if (adapter->scan_processing) {
1021                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
1022                 adapter->scan_processing = false;
1023                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1024                 for (i = 0; i < adapter->priv_num; i++) {
1025                         priv = adapter->priv[i];
1026                         if (!priv)
1027                                 continue;
1028                         if (priv->scan_request) {
1029                                 dev_dbg(adapter->dev, "info: aborting scan\n");
1030                                 cfg80211_scan_done(priv->scan_request, 1);
1031                                 priv->scan_request = NULL;
1032                         }
1033                 }
1034         }
1035 }
1036
1037 /*
1038  * This function cancels all pending commands that matches with
1039  * the given IOCTL request.
1040  *
1041  * Both the current command buffer and the pending command queue are
1042  * searched for matching IOCTL request. The completion callback of
1043  * the matched command is called with failure status to ensure cleanup.
1044  * In case of scan commands, all pending commands in scan pending queue
1045  * are cancelled.
1046  */
1047 void
1048 mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter)
1049 {
1050         struct cmd_ctrl_node *cmd_node = NULL, *tmp_node = NULL;
1051         unsigned long cmd_flags;
1052         unsigned long scan_pending_q_flags;
1053         struct mwifiex_private *priv;
1054         int i;
1055
1056         if ((adapter->curr_cmd) &&
1057             (adapter->curr_cmd->wait_q_enabled)) {
1058                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
1059                 cmd_node = adapter->curr_cmd;
1060                 cmd_node->wait_q_enabled = false;
1061                 cmd_node->cmd_flag |= CMD_F_CANCELED;
1062                 mwifiex_recycle_cmd_node(adapter, cmd_node);
1063                 mwifiex_complete_cmd(adapter, adapter->curr_cmd);
1064                 adapter->curr_cmd = NULL;
1065                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1066         }
1067
1068         /* Cancel all pending scan command */
1069         spin_lock_irqsave(&adapter->scan_pending_q_lock,
1070                           scan_pending_q_flags);
1071         list_for_each_entry_safe(cmd_node, tmp_node,
1072                                  &adapter->scan_pending_q, list) {
1073                 list_del(&cmd_node->list);
1074                 spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
1075                                        scan_pending_q_flags);
1076                 cmd_node->wait_q_enabled = false;
1077                 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
1078                 spin_lock_irqsave(&adapter->scan_pending_q_lock,
1079                                   scan_pending_q_flags);
1080         }
1081         spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
1082                                scan_pending_q_flags);
1083
1084         if (adapter->scan_processing) {
1085                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
1086                 adapter->scan_processing = false;
1087                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1088                 for (i = 0; i < adapter->priv_num; i++) {
1089                         priv = adapter->priv[i];
1090                         if (!priv)
1091                                 continue;
1092                         if (priv->scan_request) {
1093                                 dev_dbg(adapter->dev, "info: aborting scan\n");
1094                                 cfg80211_scan_done(priv->scan_request, 1);
1095                                 priv->scan_request = NULL;
1096                         }
1097                 }
1098         }
1099         adapter->cmd_wait_q.status = -1;
1100 }
1101
1102 /*
1103  * This function sends the sleep confirm command to firmware, if
1104  * possible.
1105  *
1106  * The sleep confirm command cannot be issued if command response,
1107  * data response or event response is awaiting handling, or if we
1108  * are in the middle of sending a command, or expecting a command
1109  * response.
1110  */
1111 void
1112 mwifiex_check_ps_cond(struct mwifiex_adapter *adapter)
1113 {
1114         if (!adapter->cmd_sent &&
1115             !adapter->curr_cmd && !IS_CARD_RX_RCVD(adapter))
1116                 mwifiex_dnld_sleep_confirm_cmd(adapter);
1117         else
1118                 dev_dbg(adapter->dev,
1119                         "cmd: Delay Sleep Confirm (%s%s%s)\n",
1120                         (adapter->cmd_sent) ? "D" : "",
1121                         (adapter->curr_cmd) ? "C" : "",
1122                         (IS_CARD_RX_RCVD(adapter)) ? "R" : "");
1123 }
1124
1125 /*
1126  * This function sends a Host Sleep activated event to applications.
1127  *
1128  * This event is generated by the driver, with a blank event body.
1129  */
1130 void
1131 mwifiex_hs_activated_event(struct mwifiex_private *priv, u8 activated)
1132 {
1133         if (activated) {
1134                 if (priv->adapter->is_hs_configured) {
1135                         priv->adapter->hs_activated = true;
1136                         mwifiex_update_rxreor_flags(priv->adapter,
1137                                                     RXREOR_FORCE_NO_DROP);
1138                         dev_dbg(priv->adapter->dev, "event: hs_activated\n");
1139                         priv->adapter->hs_activate_wait_q_woken = true;
1140                         wake_up_interruptible(
1141                                 &priv->adapter->hs_activate_wait_q);
1142                 } else {
1143                         dev_dbg(priv->adapter->dev, "event: HS not configured\n");
1144                 }
1145         } else {
1146                 dev_dbg(priv->adapter->dev, "event: hs_deactivated\n");
1147                 priv->adapter->hs_activated = false;
1148         }
1149 }
1150
1151 /*
1152  * This function handles the command response of a Host Sleep configuration
1153  * command.
1154  *
1155  * Handling includes changing the header fields into CPU format
1156  * and setting the current host sleep activation status in driver.
1157  *
1158  * In case host sleep status change, the function generates an event to
1159  * notify the applications.
1160  */
1161 int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv,
1162                               struct host_cmd_ds_command *resp)
1163 {
1164         struct mwifiex_adapter *adapter = priv->adapter;
1165         struct host_cmd_ds_802_11_hs_cfg_enh *phs_cfg =
1166                 &resp->params.opt_hs_cfg;
1167         uint32_t conditions = le32_to_cpu(phs_cfg->params.hs_config.conditions);
1168
1169         if (phs_cfg->action == cpu_to_le16(HS_ACTIVATE) &&
1170             adapter->iface_type != MWIFIEX_USB) {
1171                 mwifiex_hs_activated_event(priv, true);
1172                 return 0;
1173         } else {
1174                 dev_dbg(adapter->dev, "cmd: CMD_RESP: HS_CFG cmd reply"
1175                         " result=%#x, conditions=0x%x gpio=0x%x gap=0x%x\n",
1176                         resp->result, conditions,
1177                         phs_cfg->params.hs_config.gpio,
1178                         phs_cfg->params.hs_config.gap);
1179         }
1180         if (conditions != HS_CFG_CANCEL) {
1181                 adapter->is_hs_configured = true;
1182                 if (adapter->iface_type == MWIFIEX_USB)
1183                         mwifiex_hs_activated_event(priv, true);
1184         } else {
1185                 adapter->is_hs_configured = false;
1186                 if (adapter->hs_activated)
1187                         mwifiex_hs_activated_event(priv, false);
1188         }
1189
1190         return 0;
1191 }
1192
1193 /*
1194  * This function wakes up the adapter and generates a Host Sleep
1195  * cancel event on receiving the power up interrupt.
1196  */
1197 void
1198 mwifiex_process_hs_config(struct mwifiex_adapter *adapter)
1199 {
1200         dev_dbg(adapter->dev, "info: %s: auto cancelling host sleep"
1201                 " since there is interrupt from the firmware\n", __func__);
1202
1203         adapter->if_ops.wakeup(adapter);
1204         adapter->hs_activated = false;
1205         adapter->is_hs_configured = false;
1206         adapter->is_suspended = false;
1207         mwifiex_hs_activated_event(mwifiex_get_priv(adapter,
1208                                                     MWIFIEX_BSS_ROLE_ANY),
1209                                    false);
1210 }
1211 EXPORT_SYMBOL_GPL(mwifiex_process_hs_config);
1212
1213 /*
1214  * This function handles the command response of a sleep confirm command.
1215  *
1216  * The function sets the card state to SLEEP if the response indicates success.
1217  */
1218 void
1219 mwifiex_process_sleep_confirm_resp(struct mwifiex_adapter *adapter,
1220                                    u8 *pbuf, u32 upld_len)
1221 {
1222         struct host_cmd_ds_command *cmd = (struct host_cmd_ds_command *) pbuf;
1223         struct mwifiex_private *priv =
1224                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1225         uint16_t result = le16_to_cpu(cmd->result);
1226         uint16_t command = le16_to_cpu(cmd->command);
1227         uint16_t seq_num = le16_to_cpu(cmd->seq_num);
1228
1229         if (!upld_len) {
1230                 dev_err(adapter->dev, "%s: cmd size is 0\n", __func__);
1231                 return;
1232         }
1233
1234         /* Get BSS number and corresponding priv */
1235         priv = mwifiex_get_priv_by_id(adapter, HostCmd_GET_BSS_NO(seq_num),
1236                                       HostCmd_GET_BSS_TYPE(seq_num));
1237         if (!priv)
1238                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1239
1240         /* Update sequence number */
1241         seq_num = HostCmd_GET_SEQ_NO(seq_num);
1242         /* Clear RET_BIT from HostCmd */
1243         command &= HostCmd_CMD_ID_MASK;
1244
1245         if (command != HostCmd_CMD_802_11_PS_MODE_ENH) {
1246                 dev_err(adapter->dev,
1247                         "%s: rcvd unexpected resp for cmd %#x, result = %x\n",
1248                         __func__, command, result);
1249                 return;
1250         }
1251
1252         if (result) {
1253                 dev_err(adapter->dev, "%s: sleep confirm cmd failed\n",
1254                         __func__);
1255                 adapter->pm_wakeup_card_req = false;
1256                 adapter->ps_state = PS_STATE_AWAKE;
1257                 return;
1258         }
1259         adapter->pm_wakeup_card_req = true;
1260         if (adapter->is_hs_configured)
1261                 mwifiex_hs_activated_event(mwifiex_get_priv
1262                                                 (adapter, MWIFIEX_BSS_ROLE_ANY),
1263                                            true);
1264         adapter->ps_state = PS_STATE_SLEEP;
1265         cmd->command = cpu_to_le16(command);
1266         cmd->seq_num = cpu_to_le16(seq_num);
1267 }
1268 EXPORT_SYMBOL_GPL(mwifiex_process_sleep_confirm_resp);
1269
1270 /*
1271  * This function prepares an enhanced power mode command.
1272  *
1273  * This function can be used to disable power save or to configure
1274  * power save with auto PS or STA PS or auto deep sleep.
1275  *
1276  * Preparation includes -
1277  *      - Setting command ID, action and proper size
1278  *      - Setting Power Save bitmap, PS parameters TLV, PS mode TLV,
1279  *        auto deep sleep TLV (as required)
1280  *      - Ensuring correct endian-ness
1281  */
1282 int mwifiex_cmd_enh_power_mode(struct mwifiex_private *priv,
1283                                struct host_cmd_ds_command *cmd,
1284                                u16 cmd_action, uint16_t ps_bitmap,
1285                                struct mwifiex_ds_auto_ds *auto_ds)
1286 {
1287         struct host_cmd_ds_802_11_ps_mode_enh *psmode_enh =
1288                 &cmd->params.psmode_enh;
1289         u8 *tlv;
1290         u16 cmd_size = 0;
1291
1292         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
1293         if (cmd_action == DIS_AUTO_PS) {
1294                 psmode_enh->action = cpu_to_le16(DIS_AUTO_PS);
1295                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1296                 cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
1297                                         sizeof(psmode_enh->params.ps_bitmap));
1298         } else if (cmd_action == GET_PS) {
1299                 psmode_enh->action = cpu_to_le16(GET_PS);
1300                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1301                 cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
1302                                         sizeof(psmode_enh->params.ps_bitmap));
1303         } else if (cmd_action == EN_AUTO_PS) {
1304                 psmode_enh->action = cpu_to_le16(EN_AUTO_PS);
1305                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1306                 cmd_size = S_DS_GEN + sizeof(psmode_enh->action) +
1307                                         sizeof(psmode_enh->params.ps_bitmap);
1308                 tlv = (u8 *) cmd + cmd_size;
1309                 if (ps_bitmap & BITMAP_STA_PS) {
1310                         struct mwifiex_adapter *adapter = priv->adapter;
1311                         struct mwifiex_ie_types_ps_param *ps_tlv =
1312                                 (struct mwifiex_ie_types_ps_param *) tlv;
1313                         struct mwifiex_ps_param *ps_mode = &ps_tlv->param;
1314                         ps_tlv->header.type = cpu_to_le16(TLV_TYPE_PS_PARAM);
1315                         ps_tlv->header.len = cpu_to_le16(sizeof(*ps_tlv) -
1316                                         sizeof(struct mwifiex_ie_types_header));
1317                         cmd_size += sizeof(*ps_tlv);
1318                         tlv += sizeof(*ps_tlv);
1319                         dev_dbg(adapter->dev, "cmd: PS Command: Enter PS\n");
1320                         ps_mode->null_pkt_interval =
1321                                         cpu_to_le16(adapter->null_pkt_interval);
1322                         ps_mode->multiple_dtims =
1323                                         cpu_to_le16(adapter->multiple_dtim);
1324                         ps_mode->bcn_miss_timeout =
1325                                         cpu_to_le16(adapter->bcn_miss_time_out);
1326                         ps_mode->local_listen_interval =
1327                                 cpu_to_le16(adapter->local_listen_interval);
1328                         ps_mode->adhoc_wake_period =
1329                                 cpu_to_le16(adapter->adhoc_awake_period);
1330                         ps_mode->delay_to_ps =
1331                                         cpu_to_le16(adapter->delay_to_ps);
1332                         ps_mode->mode = cpu_to_le16(adapter->enhanced_ps_mode);
1333
1334                 }
1335                 if (ps_bitmap & BITMAP_AUTO_DS) {
1336                         struct mwifiex_ie_types_auto_ds_param *auto_ds_tlv =
1337                                 (struct mwifiex_ie_types_auto_ds_param *) tlv;
1338                         u16 idletime = 0;
1339
1340                         auto_ds_tlv->header.type =
1341                                 cpu_to_le16(TLV_TYPE_AUTO_DS_PARAM);
1342                         auto_ds_tlv->header.len =
1343                                 cpu_to_le16(sizeof(*auto_ds_tlv) -
1344                                         sizeof(struct mwifiex_ie_types_header));
1345                         cmd_size += sizeof(*auto_ds_tlv);
1346                         tlv += sizeof(*auto_ds_tlv);
1347                         if (auto_ds)
1348                                 idletime = auto_ds->idle_time;
1349                         dev_dbg(priv->adapter->dev,
1350                                 "cmd: PS Command: Enter Auto Deep Sleep\n");
1351                         auto_ds_tlv->deep_sleep_timeout = cpu_to_le16(idletime);
1352                 }
1353                 cmd->size = cpu_to_le16(cmd_size);
1354         }
1355         return 0;
1356 }
1357
1358 /*
1359  * This function handles the command response of an enhanced power mode
1360  * command.
1361  *
1362  * Handling includes changing the header fields into CPU format
1363  * and setting the current enhanced power mode in driver.
1364  */
1365 int mwifiex_ret_enh_power_mode(struct mwifiex_private *priv,
1366                                struct host_cmd_ds_command *resp,
1367                                struct mwifiex_ds_pm_cfg *pm_cfg)
1368 {
1369         struct mwifiex_adapter *adapter = priv->adapter;
1370         struct host_cmd_ds_802_11_ps_mode_enh *ps_mode =
1371                 &resp->params.psmode_enh;
1372         uint16_t action = le16_to_cpu(ps_mode->action);
1373         uint16_t ps_bitmap = le16_to_cpu(ps_mode->params.ps_bitmap);
1374         uint16_t auto_ps_bitmap =
1375                 le16_to_cpu(ps_mode->params.ps_bitmap);
1376
1377         dev_dbg(adapter->dev,
1378                 "info: %s: PS_MODE cmd reply result=%#x action=%#X\n",
1379                 __func__, resp->result, action);
1380         if (action == EN_AUTO_PS) {
1381                 if (auto_ps_bitmap & BITMAP_AUTO_DS) {
1382                         dev_dbg(adapter->dev, "cmd: Enabled auto deep sleep\n");
1383                         priv->adapter->is_deep_sleep = true;
1384                 }
1385                 if (auto_ps_bitmap & BITMAP_STA_PS) {
1386                         dev_dbg(adapter->dev, "cmd: Enabled STA power save\n");
1387                         if (adapter->sleep_period.period)
1388                                 dev_dbg(adapter->dev,
1389                                         "cmd: set to uapsd/pps mode\n");
1390                 }
1391         } else if (action == DIS_AUTO_PS) {
1392                 if (ps_bitmap & BITMAP_AUTO_DS) {
1393                         priv->adapter->is_deep_sleep = false;
1394                         dev_dbg(adapter->dev, "cmd: Disabled auto deep sleep\n");
1395                 }
1396                 if (ps_bitmap & BITMAP_STA_PS) {
1397                         dev_dbg(adapter->dev, "cmd: Disabled STA power save\n");
1398                         if (adapter->sleep_period.period) {
1399                                 adapter->delay_null_pkt = false;
1400                                 adapter->tx_lock_flag = false;
1401                                 adapter->pps_uapsd_mode = false;
1402                         }
1403                 }
1404         } else if (action == GET_PS) {
1405                 if (ps_bitmap & BITMAP_STA_PS)
1406                         adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
1407                 else
1408                         adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
1409
1410                 dev_dbg(adapter->dev, "cmd: ps_bitmap=%#x\n", ps_bitmap);
1411
1412                 if (pm_cfg) {
1413                         /* This section is for get power save mode */
1414                         if (ps_bitmap & BITMAP_STA_PS)
1415                                 pm_cfg->param.ps_mode = 1;
1416                         else
1417                                 pm_cfg->param.ps_mode = 0;
1418                 }
1419         }
1420         return 0;
1421 }
1422
1423 /*
1424  * This function prepares command to get hardware specifications.
1425  *
1426  * Preparation includes -
1427  *      - Setting command ID, action and proper size
1428  *      - Setting permanent address parameter
1429  *      - Ensuring correct endian-ness
1430  */
1431 int mwifiex_cmd_get_hw_spec(struct mwifiex_private *priv,
1432                             struct host_cmd_ds_command *cmd)
1433 {
1434         struct host_cmd_ds_get_hw_spec *hw_spec = &cmd->params.hw_spec;
1435
1436         cmd->command = cpu_to_le16(HostCmd_CMD_GET_HW_SPEC);
1437         cmd->size =
1438                 cpu_to_le16(sizeof(struct host_cmd_ds_get_hw_spec) + S_DS_GEN);
1439         memcpy(hw_spec->permanent_addr, priv->curr_addr, ETH_ALEN);
1440
1441         return 0;
1442 }
1443
1444 /*
1445  * This function handles the command response of get hardware
1446  * specifications.
1447  *
1448  * Handling includes changing the header fields into CPU format
1449  * and saving/updating the following parameters in driver -
1450  *      - Firmware capability information
1451  *      - Firmware band settings
1452  *      - Ad-hoc start band and channel
1453  *      - Ad-hoc 11n activation status
1454  *      - Firmware release number
1455  *      - Number of antennas
1456  *      - Hardware address
1457  *      - Hardware interface version
1458  *      - Firmware version
1459  *      - Region code
1460  *      - 11n capabilities
1461  *      - MCS support fields
1462  *      - MP end port
1463  */
1464 int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
1465                             struct host_cmd_ds_command *resp)
1466 {
1467         struct host_cmd_ds_get_hw_spec *hw_spec = &resp->params.hw_spec;
1468         struct mwifiex_adapter *adapter = priv->adapter;
1469         struct mwifiex_ie_types_header *tlv;
1470         struct hw_spec_fw_api_rev *api_rev;
1471         u16 resp_size, api_id;
1472         int i, left_len, parsed_len = 0;
1473
1474         adapter->fw_cap_info = le32_to_cpu(hw_spec->fw_cap_info);
1475
1476         if (IS_SUPPORT_MULTI_BANDS(adapter))
1477                 adapter->fw_bands = (u8) GET_FW_DEFAULT_BANDS(adapter);
1478         else
1479                 adapter->fw_bands = BAND_B;
1480
1481         adapter->config_bands = adapter->fw_bands;
1482
1483         if (adapter->fw_bands & BAND_A) {
1484                 if (adapter->fw_bands & BAND_GN) {
1485                         adapter->config_bands |= BAND_AN;
1486                         adapter->fw_bands |= BAND_AN;
1487                 }
1488                 if (adapter->fw_bands & BAND_AN) {
1489                         adapter->adhoc_start_band = BAND_A | BAND_AN;
1490                         adapter->adhoc_11n_enabled = true;
1491                 } else {
1492                         adapter->adhoc_start_band = BAND_A;
1493                 }
1494                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL_A;
1495         } else if (adapter->fw_bands & BAND_GN) {
1496                 adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
1497                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
1498                 adapter->adhoc_11n_enabled = true;
1499         } else if (adapter->fw_bands & BAND_G) {
1500                 adapter->adhoc_start_band = BAND_G | BAND_B;
1501                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
1502         } else if (adapter->fw_bands & BAND_B) {
1503                 adapter->adhoc_start_band = BAND_B;
1504                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
1505         }
1506
1507         adapter->fw_release_number = le32_to_cpu(hw_spec->fw_release_number);
1508         adapter->fw_api_ver = (adapter->fw_release_number >> 16) & 0xff;
1509         adapter->number_of_antenna = le16_to_cpu(hw_spec->number_of_antenna);
1510
1511         if (le32_to_cpu(hw_spec->dot_11ac_dev_cap)) {
1512                 adapter->is_hw_11ac_capable = true;
1513
1514                 /* Copy 11AC cap */
1515                 adapter->hw_dot_11ac_dev_cap =
1516                                         le32_to_cpu(hw_spec->dot_11ac_dev_cap);
1517                 adapter->usr_dot_11ac_dev_cap_bg = adapter->hw_dot_11ac_dev_cap
1518                                         & ~MWIFIEX_DEF_11AC_CAP_BF_RESET_MASK;
1519                 adapter->usr_dot_11ac_dev_cap_a = adapter->hw_dot_11ac_dev_cap
1520                                         & ~MWIFIEX_DEF_11AC_CAP_BF_RESET_MASK;
1521
1522                 /* Copy 11AC mcs */
1523                 adapter->hw_dot_11ac_mcs_support =
1524                                 le32_to_cpu(hw_spec->dot_11ac_mcs_support);
1525                 adapter->usr_dot_11ac_mcs_support =
1526                                         adapter->hw_dot_11ac_mcs_support;
1527         } else {
1528                 adapter->is_hw_11ac_capable = false;
1529         }
1530
1531         resp_size = le16_to_cpu(resp->size) - S_DS_GEN;
1532         if (resp_size > sizeof(struct host_cmd_ds_get_hw_spec)) {
1533                 /* we have variable HW SPEC information */
1534                 left_len = resp_size - sizeof(struct host_cmd_ds_get_hw_spec);
1535                 while (left_len > sizeof(struct mwifiex_ie_types_header)) {
1536                         tlv = (void *)&hw_spec->tlvs + parsed_len;
1537                         switch (le16_to_cpu(tlv->type)) {
1538                         case TLV_TYPE_FW_API_REV:
1539                                 api_rev = (struct hw_spec_fw_api_rev *)tlv;
1540                                 api_id = le16_to_cpu(api_rev->api_id);
1541                                 switch (api_id) {
1542                                 case KEY_API_VER_ID:
1543                                         adapter->fw_key_api_major_ver =
1544                                                         api_rev->major_ver;
1545                                         adapter->fw_key_api_minor_ver =
1546                                                         api_rev->minor_ver;
1547                                         dev_dbg(adapter->dev,
1548                                                 "fw_key_api v%d.%d\n",
1549                                                 adapter->fw_key_api_major_ver,
1550                                                 adapter->fw_key_api_minor_ver);
1551                                         break;
1552                                 default:
1553                                         dev_warn(adapter->dev,
1554                                                  "Unknown FW api_id: %d\n",
1555                                                  api_id);
1556                                         break;
1557                                 }
1558                                 break;
1559                         default:
1560                                 dev_warn(adapter->dev,
1561                                          "Unknown GET_HW_SPEC TLV type: %#x\n",
1562                                          le16_to_cpu(tlv->type));
1563                                 break;
1564                         }
1565                         parsed_len += le16_to_cpu(tlv->len) +
1566                                       sizeof(struct mwifiex_ie_types_header);
1567                         left_len -= parsed_len;
1568                 }
1569         }
1570
1571         dev_dbg(adapter->dev, "info: GET_HW_SPEC: fw_release_number- %#x\n",
1572                 adapter->fw_release_number);
1573         dev_dbg(adapter->dev, "info: GET_HW_SPEC: permanent addr: %pM\n",
1574                 hw_spec->permanent_addr);
1575         dev_dbg(adapter->dev,
1576                 "info: GET_HW_SPEC: hw_if_version=%#x version=%#x\n",
1577                 le16_to_cpu(hw_spec->hw_if_version),
1578                 le16_to_cpu(hw_spec->version));
1579
1580         if (priv->curr_addr[0] == 0xff)
1581                 memmove(priv->curr_addr, hw_spec->permanent_addr, ETH_ALEN);
1582
1583         adapter->region_code = le16_to_cpu(hw_spec->region_code);
1584
1585         for (i = 0; i < MWIFIEX_MAX_REGION_CODE; i++)
1586                 /* Use the region code to search for the index */
1587                 if (adapter->region_code == region_code_index[i])
1588                         break;
1589
1590         /* If it's unidentified region code, use the default (USA) */
1591         if (i >= MWIFIEX_MAX_REGION_CODE) {
1592                 adapter->region_code = 0x10;
1593                 dev_dbg(adapter->dev,
1594                         "cmd: unknown region code, use default (USA)\n");
1595         }
1596
1597         adapter->hw_dot_11n_dev_cap = le32_to_cpu(hw_spec->dot_11n_dev_cap);
1598         adapter->hw_dev_mcs_support = hw_spec->dev_mcs_support;
1599         adapter->user_dev_mcs_support = adapter->hw_dev_mcs_support;
1600
1601         if (adapter->if_ops.update_mp_end_port)
1602                 adapter->if_ops.update_mp_end_port(adapter,
1603                                         le16_to_cpu(hw_spec->mp_end_port));
1604
1605         return 0;
1606 }