drivers/net/wireless/mwifiex/cmdevt.c

   1 /*
   2  * Marvell Wireless LAN device driver: commands and events
   3  *
   4  * Copyright (C) 2011-2014, 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         unsigned long flags;
 141         __le32 tmp;
 142
 143         if (!adapter || !cmd_node)
 144                 return -1;
 145
 146         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 147
 148         /* Sanity test */
 149         if (host_cmd == NULL || host_cmd->size == 0) {
 150                 dev_err(adapter->dev, "DNLD_CMD: host_cmd is null"
 151                         " or cmd size is 0, not sending\n");
 152                 if (cmd_node->wait_q_enabled)
 153                         adapter->cmd_wait_q.status = -1;
 154                 mwifiex_recycle_cmd_node(adapter, cmd_node);
 155                 return -1;
 156         }
 157
 158         cmd_code = le16_to_cpu(host_cmd->command);
 159         cmd_size = le16_to_cpu(host_cmd->size);
 160
 161         if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET &&
 162             cmd_code != HostCmd_CMD_FUNC_SHUTDOWN &&
 163             cmd_code != HostCmd_CMD_FUNC_INIT) {
 164                 dev_err(adapter->dev,
 165                         "DNLD_CMD: FW in reset state, ignore cmd %#x\n",
 166                         cmd_code);
 167                 if (cmd_node->wait_q_enabled)
 168                         mwifiex_complete_cmd(adapter, cmd_node);
 169                 mwifiex_recycle_cmd_node(adapter, cmd_node);
 170                 queue_work(adapter->workqueue, &adapter->main_work);
 171                 return -1;
 172         }
 173
 174         /* Set command sequence number */
 175         adapter->seq_num++;
 176         host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO
 177                                         (adapter->seq_num,
 178                                          cmd_node->priv->bss_num,
 179                                          cmd_node->priv->bss_type));
 180
 181         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 182         adapter->curr_cmd = cmd_node;
 183         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 184
 185         /* Adjust skb length */
 186         if (cmd_node->cmd_skb->len > cmd_size)
 187                 /*
 188                  * cmd_size is less than sizeof(struct host_cmd_ds_command).
 189                  * Trim off the unused portion.
 190                  */
 191                 skb_trim(cmd_node->cmd_skb, cmd_size);
 192         else if (cmd_node->cmd_skb->len < cmd_size)
 193                 /*
 194                  * cmd_size is larger than sizeof(struct host_cmd_ds_command)
 195                  * because we have appended custom IE TLV. Increase skb length
 196                  * accordingly.
 197                  */
 198                 skb_put(cmd_node->cmd_skb, cmd_size - cmd_node->cmd_skb->len);
 199
 200         dev_dbg(adapter->dev,
 201                 "cmd: DNLD_CMD: %#x, act %#x, len %d, seqno %#x\n", cmd_code,
 202                 le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN)), cmd_size,
 203                 le16_to_cpu(host_cmd->seq_num));
 204
 205         if (adapter->iface_type == MWIFIEX_USB) {
 206                 tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
 207                 skb_push(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
 208                 memcpy(cmd_node->cmd_skb->data, &tmp, MWIFIEX_TYPE_LEN);
 209                 adapter->cmd_sent = true;
 210                 ret = adapter->if_ops.host_to_card(adapter,
 211                                                    MWIFIEX_USB_EP_CMD_EVENT,
 212                                                    cmd_node->cmd_skb, NULL);
 213                 skb_pull(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
 214                 if (ret == -EBUSY)
 215                         cmd_node->cmd_skb = NULL;
 216         } else {
 217                 skb_push(cmd_node->cmd_skb, INTF_HEADER_LEN);
 218                 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
 219                                                    cmd_node->cmd_skb, NULL);
 220                 skb_pull(cmd_node->cmd_skb, INTF_HEADER_LEN);
 221         }
 222
 223         if (ret == -1) {
 224                 dev_err(adapter->dev, "DNLD_CMD: host to card failed\n");
 225                 if (adapter->iface_type == MWIFIEX_USB)
 226                         adapter->cmd_sent = false;
 227                 if (cmd_node->wait_q_enabled)
 228                         adapter->cmd_wait_q.status = -1;
 229                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 230
 231                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 232                 adapter->curr_cmd = NULL;
 233                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 234
 235                 adapter->dbg.num_cmd_host_to_card_failure++;
 236                 return -1;
 237         }
 238
 239         /* Save the last command id and action to debug log */
 240         adapter->dbg.last_cmd_index =
 241                         (adapter->dbg.last_cmd_index + 1) % DBG_CMD_NUM;
 242         adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index] = cmd_code;
 243         adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index] =
 244                         le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN));
 245
 246         /* Clear BSS_NO_BITS from HostCmd */
 247         cmd_code &= HostCmd_CMD_ID_MASK;
 248
 249         /* Setup the timer after transmit command */
 250         mod_timer(&adapter->cmd_timer,
 251                   jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
 252
 253         return 0;
 254 }
 255
 256 /*
 257  * This function downloads a sleep confirm command to the firmware.
 258  *
 259  * The function performs sanity tests, sets the command sequence
 260  * number and size, converts the header fields to CPU format before
 261  * sending.
 262  *
 263  * No responses are needed for sleep confirm command.
 264  */
 265 static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
 266 {
 267         int ret;
 268         struct mwifiex_private *priv;
 269         struct mwifiex_opt_sleep_confirm *sleep_cfm_buf =
 270                                 (struct mwifiex_opt_sleep_confirm *)
 271                                                 adapter->sleep_cfm->data;
 272         struct sk_buff *sleep_cfm_tmp;
 273         __le32 tmp;
 274
 275         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 276
 277         adapter->seq_num++;
 278         sleep_cfm_buf->seq_num =
 279                 cpu_to_le16((HostCmd_SET_SEQ_NO_BSS_INFO
 280                                         (adapter->seq_num, priv->bss_num,
 281                                          priv->bss_type)));
 282
 283         dev_dbg(adapter->dev,
 284                 "cmd: DNLD_CMD: %#x, act %#x, len %d, seqno %#x\n",
 285                 le16_to_cpu(sleep_cfm_buf->command),
 286                 le16_to_cpu(sleep_cfm_buf->action),
 287                 le16_to_cpu(sleep_cfm_buf->size),
 288                 le16_to_cpu(sleep_cfm_buf->seq_num));
 289
 290         if (adapter->iface_type == MWIFIEX_USB) {
 291                 sleep_cfm_tmp =
 292                         dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
 293                                       + MWIFIEX_TYPE_LEN);
 294                 skb_put(sleep_cfm_tmp, sizeof(struct mwifiex_opt_sleep_confirm)
 295                         + MWIFIEX_TYPE_LEN);
 296                 tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
 297                 memcpy(sleep_cfm_tmp->data, &tmp, MWIFIEX_TYPE_LEN);
 298                 memcpy(sleep_cfm_tmp->data + MWIFIEX_TYPE_LEN,
 299                        adapter->sleep_cfm->data,
 300                        sizeof(struct mwifiex_opt_sleep_confirm));
 301                 ret = adapter->if_ops.host_to_card(adapter,
 302                                                    MWIFIEX_USB_EP_CMD_EVENT,
 303                                                    sleep_cfm_tmp, NULL);
 304                 if (ret != -EBUSY)
 305                         dev_kfree_skb_any(sleep_cfm_tmp);
 306         } else {
 307                 skb_push(adapter->sleep_cfm, INTF_HEADER_LEN);
 308                 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
 309                                                    adapter->sleep_cfm, NULL);
 310                 skb_pull(adapter->sleep_cfm, INTF_HEADER_LEN);
 311         }
 312
 313         if (ret == -1) {
 314                 dev_err(adapter->dev, "SLEEP_CFM: failed\n");
 315                 adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure++;
 316                 return -1;
 317         }
 318         if (GET_BSS_ROLE(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY))
 319             == MWIFIEX_BSS_ROLE_STA) {
 320                 if (!le16_to_cpu(sleep_cfm_buf->resp_ctrl))
 321                         /* Response is not needed for sleep
 322                            confirm command */
 323                         adapter->ps_state = PS_STATE_SLEEP;
 324                 else
 325                         adapter->ps_state = PS_STATE_SLEEP_CFM;
 326
 327                 if (!le16_to_cpu(sleep_cfm_buf->resp_ctrl) &&
 328                     (adapter->is_hs_configured &&
 329                      !adapter->sleep_period.period)) {
 330                         adapter->pm_wakeup_card_req = true;
 331                         mwifiex_hs_activated_event(mwifiex_get_priv
 332                                         (adapter, MWIFIEX_BSS_ROLE_STA), true);
 333                 }
 334         }
 335
 336         return ret;
 337 }
 338
 339 /*
 340  * This function allocates the command buffers and links them to
 341  * the command free queue.
 342  *
 343  * The driver uses a pre allocated number of command buffers, which
 344  * are created at driver initializations and freed at driver cleanup.
 345  * Every command needs to obtain a command buffer from this pool before
 346  * it can be issued. The command free queue lists the command buffers
 347  * currently free to use, while the command pending queue lists the
 348  * command buffers already in use and awaiting handling. Command buffers
 349  * are returned to the free queue after use.
 350  */
 351 int mwifiex_alloc_cmd_buffer(struct mwifiex_adapter *adapter)
 352 {
 353         struct cmd_ctrl_node *cmd_array;
 354         u32 i;
 355
 356         /* Allocate and initialize struct cmd_ctrl_node */
 357         cmd_array = kcalloc(MWIFIEX_NUM_OF_CMD_BUFFER,
 358                             sizeof(struct cmd_ctrl_node), GFP_KERNEL);
 359         if (!cmd_array)
 360                 return -ENOMEM;
 361
 362         adapter->cmd_pool = cmd_array;
 363
 364         /* Allocate and initialize command buffers */
 365         for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) {
 366                 cmd_array[i].skb = dev_alloc_skb(MWIFIEX_SIZE_OF_CMD_BUFFER);
 367                 if (!cmd_array[i].skb) {
 368                         dev_err(adapter->dev, "ALLOC_CMD_BUF: out of memory\n");
 369                         return -1;
 370                 }
 371         }
 372
 373         for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++)
 374                 mwifiex_insert_cmd_to_free_q(adapter, &cmd_array[i]);
 375
 376         return 0;
 377 }
 378
 379 /*
 380  * This function frees the command buffers.
 381  *
 382  * The function calls the completion callback for all the command
 383  * buffers that still have response buffers associated with them.
 384  */
 385 int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
 386 {
 387         struct cmd_ctrl_node *cmd_array;
 388         u32 i;
 389
 390         /* Need to check if cmd pool is allocated or not */
 391         if (!adapter->cmd_pool) {
 392                 dev_dbg(adapter->dev, "info: FREE_CMD_BUF: cmd_pool is null\n");
 393                 return 0;
 394         }
 395
 396         cmd_array = adapter->cmd_pool;
 397
 398         /* Release shared memory buffers */
 399         for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) {
 400                 if (cmd_array[i].skb) {
 401                         dev_dbg(adapter->dev, "cmd: free cmd buffer %d\n", i);
 402                         dev_kfree_skb_any(cmd_array[i].skb);
 403                 }
 404                 if (!cmd_array[i].resp_skb)
 405                         continue;
 406
 407                 if (adapter->iface_type == MWIFIEX_USB)
 408                         adapter->if_ops.cmdrsp_complete(adapter,
 409                                                         cmd_array[i].resp_skb);
 410                 else
 411                         dev_kfree_skb_any(cmd_array[i].resp_skb);
 412         }
 413         /* Release struct cmd_ctrl_node */
 414         if (adapter->cmd_pool) {
 415                 dev_dbg(adapter->dev, "cmd: free cmd pool\n");
 416                 kfree(adapter->cmd_pool);
 417                 adapter->cmd_pool = NULL;
 418         }
 419
 420         return 0;
 421 }
 422
 423 /*
 424  * This function handles events generated by firmware.
 425  *
 426  * Event body of events received from firmware are not used (though they are
 427  * saved), only the event ID is used. Some events are re-invoked by
 428  * the driver, with a new event body.
 429  *
 430  * After processing, the function calls the completion callback
 431  * for cleanup.
 432  */
 433 int mwifiex_process_event(struct mwifiex_adapter *adapter)
 434 {
 435         int ret;
 436         struct mwifiex_private *priv =
 437                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 438         struct sk_buff *skb = adapter->event_skb;
 439         u32 eventcause = adapter->event_cause;
 440         struct mwifiex_rxinfo *rx_info;
 441
 442         /* Save the last event to debug log */
 443         adapter->dbg.last_event_index =
 444                         (adapter->dbg.last_event_index + 1) % DBG_CMD_NUM;
 445         adapter->dbg.last_event[adapter->dbg.last_event_index] =
 446                                                         (u16) eventcause;
 447
 448         /* Get BSS number and corresponding priv */
 449         priv = mwifiex_get_priv_by_id(adapter, EVENT_GET_BSS_NUM(eventcause),
 450                                       EVENT_GET_BSS_TYPE(eventcause));
 451         if (!priv)
 452                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 453         /* Clear BSS_NO_BITS from event */
 454         eventcause &= EVENT_ID_MASK;
 455         adapter->event_cause = eventcause;
 456
 457         if (skb) {
 458                 rx_info = MWIFIEX_SKB_RXCB(skb);
 459                 memset(rx_info, 0, sizeof(*rx_info));
 460                 rx_info->bss_num = priv->bss_num;
 461                 rx_info->bss_type = priv->bss_type;
 462         }
 463
 464         dev_dbg(adapter->dev, "EVENT: cause: %#x\n", eventcause);
 465         if (eventcause == EVENT_PS_SLEEP || eventcause == EVENT_PS_AWAKE) {
 466                 /* Handle PS_SLEEP/AWAKE events on STA */
 467                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
 468                 if (!priv)
 469                         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 470         }
 471
 472         if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP)
 473                 ret = mwifiex_process_uap_event(priv);
 474         else
 475                 ret = mwifiex_process_sta_event(priv);
 476
 477         adapter->event_cause = 0;
 478         adapter->event_skb = NULL;
 479         adapter->if_ops.event_complete(adapter, skb);
 480
 481         return ret;
 482 }
 483
 484 /*
 485  * This function prepares a command and send it to the firmware.
 486  *
 487  * Preparation includes -
 488  *      - Sanity tests to make sure the card is still present or the FW
 489  *        is not reset
 490  *      - Getting a new command node from the command free queue
 491  *      - Initializing the command node for default parameters
 492  *      - Fill up the non-default parameters and buffer pointers
 493  *      - Add the command to pending queue
 494  */
 495 int mwifiex_send_cmd(struct mwifiex_private *priv, u16 cmd_no,
 496                      u16 cmd_action, u32 cmd_oid, void *data_buf, bool sync)
 497 {
 498         int ret;
 499         struct mwifiex_adapter *adapter = priv->adapter;
 500         struct cmd_ctrl_node *cmd_node;
 501         struct host_cmd_ds_command *cmd_ptr;
 502
 503         if (!adapter) {
 504                 pr_err("PREP_CMD: adapter is NULL\n");
 505                 return -1;
 506         }
 507
 508         if (adapter->is_suspended) {
 509                 dev_err(adapter->dev, "PREP_CMD: device in suspended state\n");
 510                 return -1;
 511         }
 512
 513         if (adapter->hs_enabling && cmd_no != HostCmd_CMD_802_11_HS_CFG_ENH) {
 514                 dev_err(adapter->dev, "PREP_CMD: host entering sleep state\n");
 515                 return -1;
 516         }
 517
 518         if (adapter->surprise_removed) {
 519                 dev_err(adapter->dev, "PREP_CMD: card is removed\n");
 520                 return -1;
 521         }
 522
 523         if (adapter->is_cmd_timedout) {
 524                 dev_err(adapter->dev, "PREP_CMD: FW is in bad state\n");
 525                 return -1;
 526         }
 527
 528         if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET) {
 529                 if (cmd_no != HostCmd_CMD_FUNC_INIT) {
 530                         dev_err(adapter->dev, "PREP_CMD: FW in reset state\n");
 531                         return -1;
 532                 }
 533         }
 534
 535         /* Get a new command node */
 536         cmd_node = mwifiex_get_cmd_node(adapter);
 537
 538         if (!cmd_node) {
 539                 dev_err(adapter->dev, "PREP_CMD: no free cmd node\n");
 540                 return -1;
 541         }
 542
 543         /* Initialize the command node */
 544         mwifiex_init_cmd_node(priv, cmd_node, cmd_oid, data_buf, sync);
 545
 546         if (!cmd_node->cmd_skb) {
 547                 dev_err(adapter->dev, "PREP_CMD: no free cmd buf\n");
 548                 return -1;
 549         }
 550
 551         memset(skb_put(cmd_node->cmd_skb, sizeof(struct host_cmd_ds_command)),
 552                0, sizeof(struct host_cmd_ds_command));
 553
 554         cmd_ptr = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 555         cmd_ptr->command = cpu_to_le16(cmd_no);
 556         cmd_ptr->result = 0;
 557
 558         /* Prepare command */
 559         if (cmd_no) {
 560                 switch (cmd_no) {
 561                 case HostCmd_CMD_UAP_SYS_CONFIG:
 562                 case HostCmd_CMD_UAP_BSS_START:
 563                 case HostCmd_CMD_UAP_BSS_STOP:
 564                 case HostCmd_CMD_UAP_STA_DEAUTH:
 565                         ret = mwifiex_uap_prepare_cmd(priv, cmd_no, cmd_action,
 566                                                       cmd_oid, data_buf,
 567                                                       cmd_ptr);
 568                         break;
 569                 default:
 570                         ret = mwifiex_sta_prepare_cmd(priv, cmd_no, cmd_action,
 571                                                       cmd_oid, data_buf,
 572                                                       cmd_ptr);
 573                         break;
 574                 }
 575         } else {
 576                 ret = mwifiex_cmd_host_cmd(priv, cmd_ptr, data_buf);
 577                 cmd_node->cmd_flag |= CMD_F_HOSTCMD;
 578         }
 579
 580         /* Return error, since the command preparation failed */
 581         if (ret) {
 582                 dev_err(adapter->dev, "PREP_CMD: cmd %#x preparation failed\n",
 583                         cmd_no);
 584                 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 585                 return -1;
 586         }
 587
 588         /* Send command */
 589         if (cmd_no == HostCmd_CMD_802_11_SCAN ||
 590             cmd_no == HostCmd_CMD_802_11_SCAN_EXT) {
 591                 mwifiex_queue_scan_cmd(priv, cmd_node);
 592         } else {
 593                 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true);
 594                 queue_work(adapter->workqueue, &adapter->main_work);
 595                 if (cmd_node->wait_q_enabled)
 596                         ret = mwifiex_wait_queue_complete(adapter, cmd_node);
 597         }
 598
 599         return ret;
 600 }
 601
 602 /*
 603  * This function returns a command to the command free queue.
 604  *
 605  * The function also calls the completion callback if required, before
 606  * cleaning the command node and re-inserting it into the free queue.
 607  */
 608 void
 609 mwifiex_insert_cmd_to_free_q(struct mwifiex_adapter *adapter,
 610                              struct cmd_ctrl_node *cmd_node)
 611 {
 612         unsigned long flags;
 613
 614         if (!cmd_node)
 615                 return;
 616
 617         if (cmd_node->wait_q_enabled)
 618                 mwifiex_complete_cmd(adapter, cmd_node);
 619         /* Clean the node */
 620         mwifiex_clean_cmd_node(adapter, cmd_node);
 621
 622         /* Insert node into cmd_free_q */
 623         spin_lock_irqsave(&adapter->cmd_free_q_lock, flags);
 624         list_add_tail(&cmd_node->list, &adapter->cmd_free_q);
 625         spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
 626 }
 627
 628 /* This function reuses a command node. */
 629 void mwifiex_recycle_cmd_node(struct mwifiex_adapter *adapter,
 630                               struct cmd_ctrl_node *cmd_node)
 631 {
 632         struct host_cmd_ds_command *host_cmd = (void *)cmd_node->cmd_skb->data;
 633
 634         mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 635
 636         atomic_dec(&adapter->cmd_pending);
 637         dev_dbg(adapter->dev, "cmd: FREE_CMD: cmd=%#x, cmd_pending=%d\n",
 638                 le16_to_cpu(host_cmd->command),
 639                 atomic_read(&adapter->cmd_pending));
 640 }
 641
 642 /*
 643  * This function queues a command to the command pending queue.
 644  *
 645  * This in effect adds the command to the command list to be executed.
 646  * Exit PS command is handled specially, by placing it always to the
 647  * front of the command queue.
 648  */
 649 void
 650 mwifiex_insert_cmd_to_pending_q(struct mwifiex_adapter *adapter,
 651                                 struct cmd_ctrl_node *cmd_node, u32 add_tail)
 652 {
 653         struct host_cmd_ds_command *host_cmd = NULL;
 654         u16 command;
 655         unsigned long flags;
 656
 657         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 658         if (!host_cmd) {
 659                 dev_err(adapter->dev, "QUEUE_CMD: host_cmd is NULL\n");
 660                 return;
 661         }
 662
 663         command = le16_to_cpu(host_cmd->command);
 664
 665         /* Exit_PS command needs to be queued in the header always. */
 666         if (command == HostCmd_CMD_802_11_PS_MODE_ENH) {
 667                 struct host_cmd_ds_802_11_ps_mode_enh *pm =
 668                                                 &host_cmd->params.psmode_enh;
 669                 if ((le16_to_cpu(pm->action) == DIS_PS) ||
 670                     (le16_to_cpu(pm->action) == DIS_AUTO_PS)) {
 671                         if (adapter->ps_state != PS_STATE_AWAKE)
 672                                 add_tail = false;
 673                 }
 674         }
 675
 676         spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
 677         if (add_tail)
 678                 list_add_tail(&cmd_node->list, &adapter->cmd_pending_q);
 679         else
 680                 list_add(&cmd_node->list, &adapter->cmd_pending_q);
 681         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
 682
 683         atomic_inc(&adapter->cmd_pending);
 684         dev_dbg(adapter->dev, "cmd: QUEUE_CMD: cmd=%#x, cmd_pending=%d\n",
 685                 command, atomic_read(&adapter->cmd_pending));
 686 }
 687
 688 /*
 689  * This function executes the next command in command pending queue.
 690  *
 691  * This function will fail if a command is already in processing stage,
 692  * otherwise it will dequeue the first command from the command pending
 693  * queue and send to the firmware.
 694  *
 695  * If the device is currently in host sleep mode, any commands, except the
 696  * host sleep configuration command will de-activate the host sleep. For PS
 697  * mode, the function will put the firmware back to sleep if applicable.
 698  */
 699 int mwifiex_exec_next_cmd(struct mwifiex_adapter *adapter)
 700 {
 701         struct mwifiex_private *priv;
 702         struct cmd_ctrl_node *cmd_node;
 703         int ret = 0;
 704         struct host_cmd_ds_command *host_cmd;
 705         unsigned long cmd_flags;
 706         unsigned long cmd_pending_q_flags;
 707
 708         /* Check if already in processing */
 709         if (adapter->curr_cmd) {
 710                 dev_err(adapter->dev, "EXEC_NEXT_CMD: cmd in processing\n");
 711                 return -1;
 712         }
 713
 714         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
 715         /* Check if any command is pending */
 716         spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
 717         if (list_empty(&adapter->cmd_pending_q)) {
 718                 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 719                                        cmd_pending_q_flags);
 720                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 721                 return 0;
 722         }
 723         cmd_node = list_first_entry(&adapter->cmd_pending_q,
 724                                     struct cmd_ctrl_node, list);
 725         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 726                                cmd_pending_q_flags);
 727
 728         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 729         priv = cmd_node->priv;
 730
 731         if (adapter->ps_state != PS_STATE_AWAKE) {
 732                 dev_err(adapter->dev, "%s: cannot send cmd in sleep state,"
 733                                 " this should not happen\n", __func__);
 734                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 735                 return ret;
 736         }
 737
 738         spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
 739         list_del(&cmd_node->list);
 740         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 741                                cmd_pending_q_flags);
 742
 743         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 744         ret = mwifiex_dnld_cmd_to_fw(priv, cmd_node);
 745         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 746         /* Any command sent to the firmware when host is in sleep
 747          * mode should de-configure host sleep. We should skip the
 748          * host sleep configuration command itself though
 749          */
 750         if (priv && (host_cmd->command !=
 751              cpu_to_le16(HostCmd_CMD_802_11_HS_CFG_ENH))) {
 752                 if (adapter->hs_activated) {
 753                         adapter->is_hs_configured = false;
 754                         mwifiex_hs_activated_event(priv, false);
 755                 }
 756         }
 757
 758         return ret;
 759 }
 760
 761 /*
 762  * This function handles the command response.
 763  *
 764  * After processing, the function cleans the command node and puts
 765  * it back to the command free queue.
 766  */
 767 int mwifiex_process_cmdresp(struct mwifiex_adapter *adapter)
 768 {
 769         struct host_cmd_ds_command *resp;
 770         struct mwifiex_private *priv =
 771                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 772         int ret = 0;
 773         uint16_t orig_cmdresp_no;
 774         uint16_t cmdresp_no;
 775         uint16_t cmdresp_result;
 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         dev_dbg(adapter->dev,
 834                 "cmd: CMD_RESP: 0x%x, result %d, len %d, seqno 0x%x\n",
 835                 orig_cmdresp_no, cmdresp_result,
 836                 le16_to_cpu(resp->size), le16_to_cpu(resp->seq_num));
 837
 838         if (!(orig_cmdresp_no & HostCmd_RET_BIT)) {
 839                 dev_err(adapter->dev, "CMD_RESP: invalid cmd resp\n");
 840                 if (adapter->curr_cmd->wait_q_enabled)
 841                         adapter->cmd_wait_q.status = -1;
 842
 843                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 844                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 845                 adapter->curr_cmd = NULL;
 846                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 847                 return -1;
 848         }
 849
 850         if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
 851                 adapter->curr_cmd->cmd_flag &= ~CMD_F_HOSTCMD;
 852                 if ((cmdresp_result == HostCmd_RESULT_OK) &&
 853                     (cmdresp_no == HostCmd_CMD_802_11_HS_CFG_ENH))
 854                         ret = mwifiex_ret_802_11_hs_cfg(priv, resp);
 855         } else {
 856                 /* handle response */
 857                 ret = mwifiex_process_sta_cmdresp(priv, cmdresp_no, resp);
 858         }
 859
 860         /* Check init command response */
 861         if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING) {
 862                 if (ret) {
 863                         dev_err(adapter->dev, "%s: cmd %#x failed during "
 864                                 "initialization\n", __func__, cmdresp_no);
 865                         mwifiex_init_fw_complete(adapter);
 866                         return -1;
 867                 } else if (adapter->last_init_cmd == cmdresp_no)
 868                         adapter->hw_status = MWIFIEX_HW_STATUS_INIT_DONE;
 869         }
 870
 871         if (adapter->curr_cmd) {
 872                 if (adapter->curr_cmd->wait_q_enabled)
 873                         adapter->cmd_wait_q.status = ret;
 874
 875                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 876
 877                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 878                 adapter->curr_cmd = NULL;
 879                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 880         }
 881
 882         return ret;
 883 }
 884
 885 /*
 886  * This function handles the timeout of command sending.
 887  *
 888  * It will re-send the same command again.
 889  */
 890 void
 891 mwifiex_cmd_timeout_func(unsigned long function_context)
 892 {
 893         struct mwifiex_adapter *adapter =
 894                 (struct mwifiex_adapter *) function_context;
 895         struct cmd_ctrl_node *cmd_node;
 896
 897         adapter->is_cmd_timedout = 1;
 898         if (!adapter->curr_cmd) {
 899                 dev_dbg(adapter->dev, "cmd: empty curr_cmd\n");
 900                 return;
 901         }
 902         cmd_node = adapter->curr_cmd;
 903         if (cmd_node) {
 904                 adapter->dbg.timeout_cmd_id =
 905                         adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index];
 906                 adapter->dbg.timeout_cmd_act =
 907                         adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index];
 908                 dev_err(adapter->dev,
 909                         "%s: Timeout cmd id = %#x, act = %#x\n", __func__,
 910                         adapter->dbg.timeout_cmd_id,
 911                         adapter->dbg.timeout_cmd_act);
 912
 913                 dev_err(adapter->dev, "num_data_h2c_failure = %d\n",
 914                         adapter->dbg.num_tx_host_to_card_failure);
 915                 dev_err(adapter->dev, "num_cmd_h2c_failure = %d\n",
 916                         adapter->dbg.num_cmd_host_to_card_failure);
 917
 918                 dev_err(adapter->dev, "is_cmd_timedout = %d\n",
 919                         adapter->is_cmd_timedout);
 920                 dev_err(adapter->dev, "num_tx_timeout = %d\n",
 921                         adapter->dbg.num_tx_timeout);
 922
 923                 dev_err(adapter->dev, "last_cmd_index = %d\n",
 924                         adapter->dbg.last_cmd_index);
 925                 dev_err(adapter->dev, "last_cmd_id: %*ph\n",
 926                         (int)sizeof(adapter->dbg.last_cmd_id),
 927                         adapter->dbg.last_cmd_id);
 928                 dev_err(adapter->dev, "last_cmd_act: %*ph\n",
 929                         (int)sizeof(adapter->dbg.last_cmd_act),
 930                         adapter->dbg.last_cmd_act);
 931
 932                 dev_err(adapter->dev, "last_cmd_resp_index = %d\n",
 933                         adapter->dbg.last_cmd_resp_index);
 934                 dev_err(adapter->dev, "last_cmd_resp_id: %*ph\n",
 935                         (int)sizeof(adapter->dbg.last_cmd_resp_id),
 936                         adapter->dbg.last_cmd_resp_id);
 937
 938                 dev_err(adapter->dev, "last_event_index = %d\n",
 939                         adapter->dbg.last_event_index);
 940                 dev_err(adapter->dev, "last_event: %*ph\n",
 941                         (int)sizeof(adapter->dbg.last_event),
 942                         adapter->dbg.last_event);
 943
 944                 dev_err(adapter->dev, "data_sent=%d cmd_sent=%d\n",
 945                         adapter->data_sent, adapter->cmd_sent);
 946
 947                 dev_err(adapter->dev, "ps_mode=%d ps_state=%d\n",
 948                         adapter->ps_mode, adapter->ps_state);
 949
 950                 if (cmd_node->wait_q_enabled) {
 951                         adapter->cmd_wait_q.status = -ETIMEDOUT;
 952                         wake_up_interruptible(&adapter->cmd_wait_q.wait);
 953                         mwifiex_cancel_pending_ioctl(adapter);
 954                 }
 955         }
 956         if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING)
 957                 mwifiex_init_fw_complete(adapter);
 958
 959         if (adapter->if_ops.fw_dump)
 960                 adapter->if_ops.fw_dump(adapter);
 961
 962         if (adapter->if_ops.card_reset)
 963                 adapter->if_ops.card_reset(adapter);
 964 }
 965
 966 /*
 967  * This function cancels all the pending commands.
 968  *
 969  * The current command, all commands in command pending queue and all scan
 970  * commands in scan pending queue are cancelled. All the completion callbacks
 971  * are called with failure status to ensure cleanup.
 972  */
 973 void
 974 mwifiex_cancel_all_pending_cmd(struct mwifiex_adapter *adapter)
 975 {
 976         struct cmd_ctrl_node *cmd_node = NULL, *tmp_node;
 977         unsigned long flags, cmd_flags;
 978         struct mwifiex_private *priv;
 979         int i;
 980
 981         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
 982         /* Cancel current cmd */
 983         if ((adapter->curr_cmd) && (adapter->curr_cmd->wait_q_enabled)) {
 984                 adapter->curr_cmd->wait_q_enabled = false;
 985                 adapter->cmd_wait_q.status = -1;
 986                 mwifiex_complete_cmd(adapter, adapter->curr_cmd);
 987         }
 988         /* Cancel all pending command */
 989         spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
 990         list_for_each_entry_safe(cmd_node, tmp_node,
 991                                  &adapter->cmd_pending_q, list) {
 992                 list_del(&cmd_node->list);
 993                 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
 994
 995                 if (cmd_node->wait_q_enabled) {
 996                         adapter->cmd_wait_q.status = -1;
 997                         mwifiex_complete_cmd(adapter, cmd_node);
 998                         cmd_node->wait_q_enabled = false;
 999                 }
1000                 mwifiex_recycle_cmd_node(adapter, cmd_node);
1001                 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1002         }
1003         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1004         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1005
1006         /* Cancel all pending scan command */
1007         spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
1008         list_for_each_entry_safe(cmd_node, tmp_node,
1009                                  &adapter->scan_pending_q, list) {
1010                 list_del(&cmd_node->list);
1011                 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
1012
1013                 cmd_node->wait_q_enabled = false;
1014                 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
1015                 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
1016         }
1017         spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
1018
1019         if (adapter->scan_processing) {
1020                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
1021                 adapter->scan_processing = false;
1022                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1023                 for (i = 0; i < adapter->priv_num; i++) {
1024                         priv = adapter->priv[i];
1025                         if (!priv)
1026                                 continue;
1027                         if (priv->scan_request) {
1028                                 dev_dbg(adapter->dev, "info: aborting scan\n");
1029                                 cfg80211_scan_done(priv->scan_request, 1);
1030                                 priv->scan_request = NULL;
1031                         }
1032                 }
1033         }
1034 }
1035
1036 /*
1037  * This function cancels all pending commands that matches with
1038  * the given IOCTL request.
1039  *
1040  * Both the current command buffer and the pending command queue are
1041  * searched for matching IOCTL request. The completion callback of
1042  * the matched command is called with failure status to ensure cleanup.
1043  * In case of scan commands, all pending commands in scan pending queue
1044  * are cancelled.
1045  */
1046 void
1047 mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter)
1048 {
1049         struct cmd_ctrl_node *cmd_node = NULL, *tmp_node = NULL;
1050         unsigned long cmd_flags;
1051         unsigned long scan_pending_q_flags;
1052         struct mwifiex_private *priv;
1053         int i;
1054
1055         if ((adapter->curr_cmd) &&
1056             (adapter->curr_cmd->wait_q_enabled)) {
1057                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
1058                 cmd_node = adapter->curr_cmd;
1059                 cmd_node->wait_q_enabled = false;
1060                 cmd_node->cmd_flag |= CMD_F_CANCELED;
1061                 mwifiex_recycle_cmd_node(adapter, cmd_node);
1062                 mwifiex_complete_cmd(adapter, adapter->curr_cmd);
1063                 adapter->curr_cmd = NULL;
1064                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1065         }
1066
1067         /* Cancel all pending scan command */
1068         spin_lock_irqsave(&adapter->scan_pending_q_lock,
1069                           scan_pending_q_flags);
1070         list_for_each_entry_safe(cmd_node, tmp_node,
1071                                  &adapter->scan_pending_q, list) {
1072                 list_del(&cmd_node->list);
1073                 spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
1074                                        scan_pending_q_flags);
1075                 cmd_node->wait_q_enabled = false;
1076                 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
1077                 spin_lock_irqsave(&adapter->scan_pending_q_lock,
1078                                   scan_pending_q_flags);
1079         }
1080         spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
1081                                scan_pending_q_flags);
1082
1083         if (adapter->scan_processing) {
1084                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
1085                 adapter->scan_processing = false;
1086                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1087                 for (i = 0; i < adapter->priv_num; i++) {
1088                         priv = adapter->priv[i];
1089                         if (!priv)
1090                                 continue;
1091                         if (priv->scan_request) {
1092                                 dev_dbg(adapter->dev, "info: aborting scan\n");
1093                                 cfg80211_scan_done(priv->scan_request, 1);
1094                                 priv->scan_request = NULL;
1095                         }
1096                 }
1097         }
1098         adapter->cmd_wait_q.status = -1;
1099 }
1100
1101 /*
1102  * This function sends the sleep confirm command to firmware, if
1103  * possible.
1104  *
1105  * The sleep confirm command cannot be issued if command response,
1106  * data response or event response is awaiting handling, or if we
1107  * are in the middle of sending a command, or expecting a command
1108  * response.
1109  */
1110 void
1111 mwifiex_check_ps_cond(struct mwifiex_adapter *adapter)
1112 {
1113         if (!adapter->cmd_sent &&
1114             !adapter->curr_cmd && !IS_CARD_RX_RCVD(adapter))
1115                 mwifiex_dnld_sleep_confirm_cmd(adapter);
1116         else
1117                 dev_dbg(adapter->dev,
1118                         "cmd: Delay Sleep Confirm (%s%s%s)\n",
1119                         (adapter->cmd_sent) ? "D" : "",
1120                         (adapter->curr_cmd) ? "C" : "",
1121                         (IS_CARD_RX_RCVD(adapter)) ? "R" : "");
1122 }
1123
1124 /*
1125  * This function sends a Host Sleep activated event to applications.
1126  *
1127  * This event is generated by the driver, with a blank event body.
1128  */
1129 void
1130 mwifiex_hs_activated_event(struct mwifiex_private *priv, u8 activated)
1131 {
1132         if (activated) {
1133                 if (priv->adapter->is_hs_configured) {
1134                         priv->adapter->hs_activated = true;
1135                         mwifiex_update_rxreor_flags(priv->adapter,
1136                                                     RXREOR_FORCE_NO_DROP);
1137                         dev_dbg(priv->adapter->dev, "event: hs_activated\n");
1138                         priv->adapter->hs_activate_wait_q_woken = true;
1139                         wake_up_interruptible(
1140                                 &priv->adapter->hs_activate_wait_q);
1141                 } else {
1142                         dev_dbg(priv->adapter->dev, "event: HS not configured\n");
1143                 }
1144         } else {
1145                 dev_dbg(priv->adapter->dev, "event: hs_deactivated\n");
1146                 priv->adapter->hs_activated = false;
1147         }
1148 }
1149
1150 /*
1151  * This function handles the command response of a Host Sleep configuration
1152  * command.
1153  *
1154  * Handling includes changing the header fields into CPU format
1155  * and setting the current host sleep activation status in driver.
1156  *
1157  * In case host sleep status change, the function generates an event to
1158  * notify the applications.
1159  */
1160 int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv,
1161                               struct host_cmd_ds_command *resp)
1162 {
1163         struct mwifiex_adapter *adapter = priv->adapter;
1164         struct host_cmd_ds_802_11_hs_cfg_enh *phs_cfg =
1165                 &resp->params.opt_hs_cfg;
1166         uint32_t conditions = le32_to_cpu(phs_cfg->params.hs_config.conditions);
1167
1168         if (phs_cfg->action == cpu_to_le16(HS_ACTIVATE) &&
1169             adapter->iface_type != MWIFIEX_USB) {
1170                 mwifiex_hs_activated_event(priv, true);
1171                 return 0;
1172         } else {
1173                 dev_dbg(adapter->dev, "cmd: CMD_RESP: HS_CFG cmd reply"
1174                         " result=%#x, conditions=0x%x gpio=0x%x gap=0x%x\n",
1175                         resp->result, conditions,
1176                         phs_cfg->params.hs_config.gpio,
1177                         phs_cfg->params.hs_config.gap);
1178         }
1179         if (conditions != HS_CFG_CANCEL) {
1180                 adapter->is_hs_configured = true;
1181                 if (adapter->iface_type == MWIFIEX_USB)
1182                         mwifiex_hs_activated_event(priv, true);
1183         } else {
1184                 adapter->is_hs_configured = false;
1185                 if (adapter->hs_activated)
1186                         mwifiex_hs_activated_event(priv, false);
1187         }
1188
1189         return 0;
1190 }
1191
1192 /*
1193  * This function wakes up the adapter and generates a Host Sleep
1194  * cancel event on receiving the power up interrupt.
1195  */
1196 void
1197 mwifiex_process_hs_config(struct mwifiex_adapter *adapter)
1198 {
1199         dev_dbg(adapter->dev, "info: %s: auto cancelling host sleep"
1200                 " since there is interrupt from the firmware\n", __func__);
1201
1202         adapter->if_ops.wakeup(adapter);
1203         adapter->hs_activated = false;
1204         adapter->is_hs_configured = false;
1205         adapter->is_suspended = false;
1206         mwifiex_hs_activated_event(mwifiex_get_priv(adapter,
1207                                                     MWIFIEX_BSS_ROLE_ANY),
1208                                    false);
1209 }
1210 EXPORT_SYMBOL_GPL(mwifiex_process_hs_config);
1211
1212 /*
1213  * This function handles the command response of a sleep confirm command.
1214  *
1215  * The function sets the card state to SLEEP if the response indicates success.
1216  */
1217 void
1218 mwifiex_process_sleep_confirm_resp(struct mwifiex_adapter *adapter,
1219                                    u8 *pbuf, u32 upld_len)
1220 {
1221         struct host_cmd_ds_command *cmd = (struct host_cmd_ds_command *) pbuf;
1222         struct mwifiex_private *priv =
1223                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1224         uint16_t result = le16_to_cpu(cmd->result);
1225         uint16_t command = le16_to_cpu(cmd->command);
1226         uint16_t seq_num = le16_to_cpu(cmd->seq_num);
1227
1228         if (!upld_len) {
1229                 dev_err(adapter->dev, "%s: cmd size is 0\n", __func__);
1230                 return;
1231         }
1232
1233         dev_dbg(adapter->dev,
1234                 "cmd: CMD_RESP: 0x%x, result %d, len %d, seqno 0x%x\n",
1235                 command, result, le16_to_cpu(cmd->size), seq_num);
1236
1237         /* Get BSS number and corresponding priv */
1238         priv = mwifiex_get_priv_by_id(adapter, HostCmd_GET_BSS_NO(seq_num),
1239                                       HostCmd_GET_BSS_TYPE(seq_num));
1240         if (!priv)
1241                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1242
1243         /* Update sequence number */
1244         seq_num = HostCmd_GET_SEQ_NO(seq_num);
1245         /* Clear RET_BIT from HostCmd */
1246         command &= HostCmd_CMD_ID_MASK;
1247
1248         if (command != HostCmd_CMD_802_11_PS_MODE_ENH) {
1249                 dev_err(adapter->dev,
1250                         "%s: rcvd unexpected resp for cmd %#x, result = %x\n",
1251                         __func__, command, result);
1252                 return;
1253         }
1254
1255         if (result) {
1256                 dev_err(adapter->dev, "%s: sleep confirm cmd failed\n",
1257                         __func__);
1258                 adapter->pm_wakeup_card_req = false;
1259                 adapter->ps_state = PS_STATE_AWAKE;
1260                 return;
1261         }
1262         adapter->pm_wakeup_card_req = true;
1263         if (adapter->is_hs_configured)
1264                 mwifiex_hs_activated_event(mwifiex_get_priv
1265                                                 (adapter, MWIFIEX_BSS_ROLE_ANY),
1266                                            true);
1267         adapter->ps_state = PS_STATE_SLEEP;
1268         cmd->command = cpu_to_le16(command);
1269         cmd->seq_num = cpu_to_le16(seq_num);
1270 }
1271 EXPORT_SYMBOL_GPL(mwifiex_process_sleep_confirm_resp);
1272
1273 /*
1274  * This function prepares an enhanced power mode command.
1275  *
1276  * This function can be used to disable power save or to configure
1277  * power save with auto PS or STA PS or auto deep sleep.
1278  *
1279  * Preparation includes -
1280  *      - Setting command ID, action and proper size
1281  *      - Setting Power Save bitmap, PS parameters TLV, PS mode TLV,
1282  *        auto deep sleep TLV (as required)
1283  *      - Ensuring correct endian-ness
1284  */
1285 int mwifiex_cmd_enh_power_mode(struct mwifiex_private *priv,
1286                                struct host_cmd_ds_command *cmd,
1287                                u16 cmd_action, uint16_t ps_bitmap,
1288                                struct mwifiex_ds_auto_ds *auto_ds)
1289 {
1290         struct host_cmd_ds_802_11_ps_mode_enh *psmode_enh =
1291                 &cmd->params.psmode_enh;
1292         u8 *tlv;
1293         u16 cmd_size = 0;
1294
1295         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
1296         if (cmd_action == DIS_AUTO_PS) {
1297                 psmode_enh->action = cpu_to_le16(DIS_AUTO_PS);
1298                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1299                 cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
1300                                         sizeof(psmode_enh->params.ps_bitmap));
1301         } else if (cmd_action == GET_PS) {
1302                 psmode_enh->action = cpu_to_le16(GET_PS);
1303                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1304                 cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
1305                                         sizeof(psmode_enh->params.ps_bitmap));
1306         } else if (cmd_action == EN_AUTO_PS) {
1307                 psmode_enh->action = cpu_to_le16(EN_AUTO_PS);
1308                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1309                 cmd_size = S_DS_GEN + sizeof(psmode_enh->action) +
1310                                         sizeof(psmode_enh->params.ps_bitmap);
1311                 tlv = (u8 *) cmd + cmd_size;
1312                 if (ps_bitmap & BITMAP_STA_PS) {
1313                         struct mwifiex_adapter *adapter = priv->adapter;
1314                         struct mwifiex_ie_types_ps_param *ps_tlv =
1315                                 (struct mwifiex_ie_types_ps_param *) tlv;
1316                         struct mwifiex_ps_param *ps_mode = &ps_tlv->param;
1317                         ps_tlv->header.type = cpu_to_le16(TLV_TYPE_PS_PARAM);
1318                         ps_tlv->header.len = cpu_to_le16(sizeof(*ps_tlv) -
1319                                         sizeof(struct mwifiex_ie_types_header));
1320                         cmd_size += sizeof(*ps_tlv);
1321                         tlv += sizeof(*ps_tlv);
1322                         dev_dbg(adapter->dev, "cmd: PS Command: Enter PS\n");
1323                         ps_mode->null_pkt_interval =
1324                                         cpu_to_le16(adapter->null_pkt_interval);
1325                         ps_mode->multiple_dtims =
1326                                         cpu_to_le16(adapter->multiple_dtim);
1327                         ps_mode->bcn_miss_timeout =
1328                                         cpu_to_le16(adapter->bcn_miss_time_out);
1329                         ps_mode->local_listen_interval =
1330                                 cpu_to_le16(adapter->local_listen_interval);
1331                         ps_mode->adhoc_wake_period =
1332                                 cpu_to_le16(adapter->adhoc_awake_period);
1333                         ps_mode->delay_to_ps =
1334                                         cpu_to_le16(adapter->delay_to_ps);
1335                         ps_mode->mode = cpu_to_le16(adapter->enhanced_ps_mode);
1336
1337                 }
1338                 if (ps_bitmap & BITMAP_AUTO_DS) {
1339                         struct mwifiex_ie_types_auto_ds_param *auto_ds_tlv =
1340                                 (struct mwifiex_ie_types_auto_ds_param *) tlv;
1341                         u16 idletime = 0;
1342
1343                         auto_ds_tlv->header.type =
1344                                 cpu_to_le16(TLV_TYPE_AUTO_DS_PARAM);
1345                         auto_ds_tlv->header.len =
1346                                 cpu_to_le16(sizeof(*auto_ds_tlv) -
1347                                         sizeof(struct mwifiex_ie_types_header));
1348                         cmd_size += sizeof(*auto_ds_tlv);
1349                         tlv += sizeof(*auto_ds_tlv);
1350                         if (auto_ds)
1351                                 idletime = auto_ds->idle_time;
1352                         dev_dbg(priv->adapter->dev,
1353                                 "cmd: PS Command: Enter Auto Deep Sleep\n");
1354                         auto_ds_tlv->deep_sleep_timeout = cpu_to_le16(idletime);
1355                 }
1356                 cmd->size = cpu_to_le16(cmd_size);
1357         }
1358         return 0;
1359 }
1360
1361 /*
1362  * This function handles the command response of an enhanced power mode
1363  * command.
1364  *
1365  * Handling includes changing the header fields into CPU format
1366  * and setting the current enhanced power mode in driver.
1367  */
1368 int mwifiex_ret_enh_power_mode(struct mwifiex_private *priv,
1369                                struct host_cmd_ds_command *resp,
1370                                struct mwifiex_ds_pm_cfg *pm_cfg)
1371 {
1372         struct mwifiex_adapter *adapter = priv->adapter;
1373         struct host_cmd_ds_802_11_ps_mode_enh *ps_mode =
1374                 &resp->params.psmode_enh;
1375         uint16_t action = le16_to_cpu(ps_mode->action);
1376         uint16_t ps_bitmap = le16_to_cpu(ps_mode->params.ps_bitmap);
1377         uint16_t auto_ps_bitmap =
1378                 le16_to_cpu(ps_mode->params.ps_bitmap);
1379
1380         dev_dbg(adapter->dev,
1381                 "info: %s: PS_MODE cmd reply result=%#x action=%#X\n",
1382                 __func__, resp->result, action);
1383         if (action == EN_AUTO_PS) {
1384                 if (auto_ps_bitmap & BITMAP_AUTO_DS) {
1385                         dev_dbg(adapter->dev, "cmd: Enabled auto deep sleep\n");
1386                         priv->adapter->is_deep_sleep = true;
1387                 }
1388                 if (auto_ps_bitmap & BITMAP_STA_PS) {
1389                         dev_dbg(adapter->dev, "cmd: Enabled STA power save\n");
1390                         if (adapter->sleep_period.period)
1391                                 dev_dbg(adapter->dev,
1392                                         "cmd: set to uapsd/pps mode\n");
1393                 }
1394         } else if (action == DIS_AUTO_PS) {
1395                 if (ps_bitmap & BITMAP_AUTO_DS) {
1396                         priv->adapter->is_deep_sleep = false;
1397                         dev_dbg(adapter->dev, "cmd: Disabled auto deep sleep\n");
1398                 }
1399                 if (ps_bitmap & BITMAP_STA_PS) {
1400                         dev_dbg(adapter->dev, "cmd: Disabled STA power save\n");
1401                         if (adapter->sleep_period.period) {
1402                                 adapter->delay_null_pkt = false;
1403                                 adapter->tx_lock_flag = false;
1404                                 adapter->pps_uapsd_mode = false;
1405                         }
1406                 }
1407         } else if (action == GET_PS) {
1408                 if (ps_bitmap & BITMAP_STA_PS)
1409                         adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
1410                 else
1411                         adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
1412
1413                 dev_dbg(adapter->dev, "cmd: ps_bitmap=%#x\n", ps_bitmap);
1414
1415                 if (pm_cfg) {
1416                         /* This section is for get power save mode */
1417                         if (ps_bitmap & BITMAP_STA_PS)
1418                                 pm_cfg->param.ps_mode = 1;
1419                         else
1420                                 pm_cfg->param.ps_mode = 0;
1421                 }
1422         }
1423         return 0;
1424 }
1425
1426 /*
1427  * This function prepares command to get hardware specifications.
1428  *
1429  * Preparation includes -
1430  *      - Setting command ID, action and proper size
1431  *      - Setting permanent address parameter
1432  *      - Ensuring correct endian-ness
1433  */
1434 int mwifiex_cmd_get_hw_spec(struct mwifiex_private *priv,
1435                             struct host_cmd_ds_command *cmd)
1436 {
1437         struct host_cmd_ds_get_hw_spec *hw_spec = &cmd->params.hw_spec;
1438
1439         cmd->command = cpu_to_le16(HostCmd_CMD_GET_HW_SPEC);
1440         cmd->size =
1441                 cpu_to_le16(sizeof(struct host_cmd_ds_get_hw_spec) + S_DS_GEN);
1442         memcpy(hw_spec->permanent_addr, priv->curr_addr, ETH_ALEN);
1443
1444         return 0;
1445 }
1446
1447 /*
1448  * This function handles the command response of get hardware
1449  * specifications.
1450  *
1451  * Handling includes changing the header fields into CPU format
1452  * and saving/updating the following parameters in driver -
1453  *      - Firmware capability information
1454  *      - Firmware band settings
1455  *      - Ad-hoc start band and channel
1456  *      - Ad-hoc 11n activation status
1457  *      - Firmware release number
1458  *      - Number of antennas
1459  *      - Hardware address
1460  *      - Hardware interface version
1461  *      - Firmware version
1462  *      - Region code
1463  *      - 11n capabilities
1464  *      - MCS support fields
1465  *      - MP end port
1466  */
1467 int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
1468                             struct host_cmd_ds_command *resp)
1469 {
1470         struct host_cmd_ds_get_hw_spec *hw_spec = &resp->params.hw_spec;
1471         struct mwifiex_adapter *adapter = priv->adapter;
1472         struct mwifiex_ie_types_header *tlv;
1473         struct hw_spec_api_rev *api_rev;
1474         u16 resp_size, api_id;
1475         int i, left_len, parsed_len = 0;
1476
1477         adapter->fw_cap_info = le32_to_cpu(hw_spec->fw_cap_info);
1478
1479         if (IS_SUPPORT_MULTI_BANDS(adapter))
1480                 adapter->fw_bands = (u8) GET_FW_DEFAULT_BANDS(adapter);
1481         else
1482                 adapter->fw_bands = BAND_B;
1483
1484         adapter->config_bands = adapter->fw_bands;
1485
1486         if (adapter->fw_bands & BAND_A) {
1487                 if (adapter->fw_bands & BAND_GN) {
1488                         adapter->config_bands |= BAND_AN;
1489                         adapter->fw_bands |= BAND_AN;
1490                 }
1491                 if (adapter->fw_bands & BAND_AN) {
1492                         adapter->adhoc_start_band = BAND_A | BAND_AN;
1493                         adapter->adhoc_11n_enabled = true;
1494                 } else {
1495                         adapter->adhoc_start_band = BAND_A;
1496                 }
1497                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL_A;
1498         } else if (adapter->fw_bands & BAND_GN) {
1499                 adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
1500                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
1501                 adapter->adhoc_11n_enabled = true;
1502         } else if (adapter->fw_bands & BAND_G) {
1503                 adapter->adhoc_start_band = BAND_G | BAND_B;
1504                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
1505         } else if (adapter->fw_bands & BAND_B) {
1506                 adapter->adhoc_start_band = BAND_B;
1507                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
1508         }
1509
1510         adapter->fw_release_number = le32_to_cpu(hw_spec->fw_release_number);
1511         adapter->fw_api_ver = (adapter->fw_release_number >> 16) & 0xff;
1512         adapter->number_of_antenna = le16_to_cpu(hw_spec->number_of_antenna);
1513
1514         if (le32_to_cpu(hw_spec->dot_11ac_dev_cap)) {
1515                 adapter->is_hw_11ac_capable = true;
1516
1517                 /* Copy 11AC cap */
1518                 adapter->hw_dot_11ac_dev_cap =
1519                                         le32_to_cpu(hw_spec->dot_11ac_dev_cap);
1520                 adapter->usr_dot_11ac_dev_cap_bg = adapter->hw_dot_11ac_dev_cap
1521                                         & ~MWIFIEX_DEF_11AC_CAP_BF_RESET_MASK;
1522                 adapter->usr_dot_11ac_dev_cap_a = adapter->hw_dot_11ac_dev_cap
1523                                         & ~MWIFIEX_DEF_11AC_CAP_BF_RESET_MASK;
1524
1525                 /* Copy 11AC mcs */
1526                 adapter->hw_dot_11ac_mcs_support =
1527                                 le32_to_cpu(hw_spec->dot_11ac_mcs_support);
1528                 adapter->usr_dot_11ac_mcs_support =
1529                                         adapter->hw_dot_11ac_mcs_support;
1530         } else {
1531                 adapter->is_hw_11ac_capable = false;
1532         }
1533
1534         resp_size = le16_to_cpu(resp->size) - S_DS_GEN;
1535         if (resp_size > sizeof(struct host_cmd_ds_get_hw_spec)) {
1536                 /* we have variable HW SPEC information */
1537                 left_len = resp_size - sizeof(struct host_cmd_ds_get_hw_spec);
1538                 while (left_len > sizeof(struct mwifiex_ie_types_header)) {
1539                         tlv = (void *)&hw_spec->tlvs + parsed_len;
1540                         switch (le16_to_cpu(tlv->type)) {
1541                         case TLV_TYPE_API_REV:
1542                                 api_rev = (struct hw_spec_api_rev *)tlv;
1543                                 api_id = le16_to_cpu(api_rev->api_id);
1544                                 switch (api_id) {
1545                                 case KEY_API_VER_ID:
1546                                         adapter->key_api_major_ver =
1547                                                         api_rev->major_ver;
1548                                         adapter->key_api_minor_ver =
1549                                                         api_rev->minor_ver;
1550                                         dev_dbg(adapter->dev,
1551                                                 "key_api v%d.%d\n",
1552                                                 adapter->key_api_major_ver,
1553                                                 adapter->key_api_minor_ver);
1554                                         break;
1555                                 case FW_API_VER_ID:
1556                                         adapter->fw_api_ver =
1557                                                         api_rev->major_ver;
1558                                         dev_dbg(adapter->dev,
1559                                                 "Firmware api version %d\n",
1560                                                 adapter->fw_api_ver);
1561                                         break;
1562                                 default:
1563                                         dev_warn(adapter->dev,
1564                                                  "Unknown api_id: %d\n",
1565                                                  api_id);
1566                                         break;
1567                                 }
1568                                 break;
1569                         default:
1570                                 dev_warn(adapter->dev,
1571                                          "Unknown GET_HW_SPEC TLV type: %#x\n",
1572                                          le16_to_cpu(tlv->type));
1573                                 break;
1574                         }
1575                         parsed_len += le16_to_cpu(tlv->len) +
1576                                       sizeof(struct mwifiex_ie_types_header);
1577                         left_len -= le16_to_cpu(tlv->len) +
1578                                       sizeof(struct mwifiex_ie_types_header);
1579                 }
1580         }
1581
1582         dev_dbg(adapter->dev, "info: GET_HW_SPEC: fw_release_number- %#x\n",
1583                 adapter->fw_release_number);
1584         dev_dbg(adapter->dev, "info: GET_HW_SPEC: permanent addr: %pM\n",
1585                 hw_spec->permanent_addr);
1586         dev_dbg(adapter->dev,
1587                 "info: GET_HW_SPEC: hw_if_version=%#x version=%#x\n",
1588                 le16_to_cpu(hw_spec->hw_if_version),
1589                 le16_to_cpu(hw_spec->version));
1590
1591         if (priv->curr_addr[0] == 0xff)
1592                 memmove(priv->curr_addr, hw_spec->permanent_addr, ETH_ALEN);
1593
1594         adapter->region_code = le16_to_cpu(hw_spec->region_code);
1595
1596         for (i = 0; i < MWIFIEX_MAX_REGION_CODE; i++)
1597                 /* Use the region code to search for the index */
1598                 if (adapter->region_code == region_code_index[i])
1599                         break;
1600
1601         /* If it's unidentified region code, use the default (USA) */
1602         if (i >= MWIFIEX_MAX_REGION_CODE) {
1603                 adapter->region_code = 0x10;
1604                 dev_dbg(adapter->dev,
1605                         "cmd: unknown region code, use default (USA)\n");
1606         }
1607
1608         adapter->hw_dot_11n_dev_cap = le32_to_cpu(hw_spec->dot_11n_dev_cap);
1609         adapter->hw_dev_mcs_support = hw_spec->dev_mcs_support;
1610         adapter->user_dev_mcs_support = adapter->hw_dev_mcs_support;
1611
1612         if (adapter->if_ops.update_mp_end_port)
1613                 adapter->if_ops.update_mp_end_port(adapter,
1614                                         le16_to_cpu(hw_spec->mp_end_port));
1615
1616         if (adapter->fw_api_ver == MWIFIEX_FW_V15)
1617                 adapter->scan_chan_gap_enabled = true;
1618
1619         return 0;
1620 }