drivers/net/wireless/marvell/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                 mwifiex_dbg(adapter, ERROR,
  66                             "GET_CMD_NODE: cmd node not available\n");
  67                 spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
  68                 return NULL;
  69         }
  70         cmd_node = list_first_entry(&adapter->cmd_free_q,
  71                                     struct cmd_ctrl_node, list);
  72         list_del(&cmd_node->list);
  73         spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
  74
  75         return cmd_node;
  76 }
  77
  78 /*
  79  * This function cleans up a command node.
  80  *
  81  * The function resets the fields including the buffer pointers.
  82  * This function does not try to free the buffers. They must be
  83  * freed before calling this function.
  84  *
  85  * This function will however call the receive completion callback
  86  * in case a response buffer is still available before resetting
  87  * the pointer.
  88  */
  89 static void
  90 mwifiex_clean_cmd_node(struct mwifiex_adapter *adapter,
  91                        struct cmd_ctrl_node *cmd_node)
  92 {
  93         cmd_node->cmd_oid = 0;
  94         cmd_node->cmd_flag = 0;
  95         cmd_node->data_buf = NULL;
  96         cmd_node->wait_q_enabled = false;
  97
  98         if (cmd_node->cmd_skb)
  99                 skb_trim(cmd_node->cmd_skb, 0);
 100
 101         if (cmd_node->resp_skb) {
 102                 adapter->if_ops.cmdrsp_complete(adapter, cmd_node->resp_skb);
 103                 cmd_node->resp_skb = NULL;
 104         }
 105 }
 106
 107 /*
 108  * This function returns a command to the command free queue.
 109  *
 110  * The function also calls the completion callback if required, before
 111  * cleaning the command node and re-inserting it into the free queue.
 112  */
 113 static void
 114 mwifiex_insert_cmd_to_free_q(struct mwifiex_adapter *adapter,
 115                              struct cmd_ctrl_node *cmd_node)
 116 {
 117         unsigned long flags;
 118
 119         if (!cmd_node)
 120                 return;
 121
 122         if (cmd_node->wait_q_enabled)
 123                 mwifiex_complete_cmd(adapter, cmd_node);
 124         /* Clean the node */
 125         mwifiex_clean_cmd_node(adapter, cmd_node);
 126
 127         /* Insert node into cmd_free_q */
 128         spin_lock_irqsave(&adapter->cmd_free_q_lock, flags);
 129         list_add_tail(&cmd_node->list, &adapter->cmd_free_q);
 130         spin_unlock_irqrestore(&adapter->cmd_free_q_lock, flags);
 131 }
 132
 133 /* This function reuses a command node. */
 134 void mwifiex_recycle_cmd_node(struct mwifiex_adapter *adapter,
 135                               struct cmd_ctrl_node *cmd_node)
 136 {
 137         struct host_cmd_ds_command *host_cmd = (void *)cmd_node->cmd_skb->data;
 138
 139         mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 140
 141         atomic_dec(&adapter->cmd_pending);
 142         mwifiex_dbg(adapter, CMD,
 143                     "cmd: FREE_CMD: cmd=%#x, cmd_pending=%d\n",
 144                 le16_to_cpu(host_cmd->command),
 145                 atomic_read(&adapter->cmd_pending));
 146 }
 147
 148 /*
 149  * This function sends a host command to the firmware.
 150  *
 151  * The function copies the host command into the driver command
 152  * buffer, which will be transferred to the firmware later by the
 153  * main thread.
 154  */
 155 static int mwifiex_cmd_host_cmd(struct mwifiex_private *priv,
 156                                 struct host_cmd_ds_command *cmd,
 157                                 struct mwifiex_ds_misc_cmd *pcmd_ptr)
 158 {
 159         /* Copy the HOST command to command buffer */
 160         memcpy(cmd, pcmd_ptr->cmd, pcmd_ptr->len);
 161         mwifiex_dbg(priv->adapter, CMD,
 162                     "cmd: host cmd size = %d\n", pcmd_ptr->len);
 163         return 0;
 164 }
 165
 166 /*
 167  * This function downloads a command to the firmware.
 168  *
 169  * The function performs sanity tests, sets the command sequence
 170  * number and size, converts the header fields to CPU format before
 171  * sending. Afterwards, it logs the command ID and action for debugging
 172  * and sets up the command timeout timer.
 173  */
 174 static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
 175                                   struct cmd_ctrl_node *cmd_node)
 176 {
 177
 178         struct mwifiex_adapter *adapter = priv->adapter;
 179         int ret;
 180         struct host_cmd_ds_command *host_cmd;
 181         uint16_t cmd_code;
 182         uint16_t cmd_size;
 183         unsigned long flags;
 184         __le32 tmp;
 185
 186         if (!adapter || !cmd_node)
 187                 return -1;
 188
 189         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 190
 191         /* Sanity test */
 192         if (host_cmd == NULL || host_cmd->size == 0) {
 193                 mwifiex_dbg(adapter, ERROR,
 194                             "DNLD_CMD: host_cmd is null\t"
 195                             "or cmd size is 0, not sending\n");
 196                 if (cmd_node->wait_q_enabled)
 197                         adapter->cmd_wait_q.status = -1;
 198                 mwifiex_recycle_cmd_node(adapter, cmd_node);
 199                 return -1;
 200         }
 201
 202         cmd_code = le16_to_cpu(host_cmd->command);
 203         cmd_size = le16_to_cpu(host_cmd->size);
 204
 205         if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET &&
 206             cmd_code != HostCmd_CMD_FUNC_SHUTDOWN &&
 207             cmd_code != HostCmd_CMD_FUNC_INIT) {
 208                 mwifiex_dbg(adapter, ERROR,
 209                             "DNLD_CMD: FW in reset state, ignore cmd %#x\n",
 210                         cmd_code);
 211                 mwifiex_recycle_cmd_node(adapter, cmd_node);
 212                 queue_work(adapter->workqueue, &adapter->main_work);
 213                 return -1;
 214         }
 215
 216         /* Set command sequence number */
 217         adapter->seq_num++;
 218         host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO
 219                                         (adapter->seq_num,
 220                                          cmd_node->priv->bss_num,
 221                                          cmd_node->priv->bss_type));
 222
 223         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 224         adapter->curr_cmd = cmd_node;
 225         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 226
 227         /* Adjust skb length */
 228         if (cmd_node->cmd_skb->len > cmd_size)
 229                 /*
 230                  * cmd_size is less than sizeof(struct host_cmd_ds_command).
 231                  * Trim off the unused portion.
 232                  */
 233                 skb_trim(cmd_node->cmd_skb, cmd_size);
 234         else if (cmd_node->cmd_skb->len < cmd_size)
 235                 /*
 236                  * cmd_size is larger than sizeof(struct host_cmd_ds_command)
 237                  * because we have appended custom IE TLV. Increase skb length
 238                  * accordingly.
 239                  */
 240                 skb_put(cmd_node->cmd_skb, cmd_size - cmd_node->cmd_skb->len);
 241
 242         mwifiex_dbg(adapter, CMD,
 243                     "cmd: DNLD_CMD: %#x, act %#x, len %d, seqno %#x\n",
 244                     cmd_code,
 245                     le16_to_cpu(*(__le16 *)((u8 *)host_cmd + S_DS_GEN)),
 246                     cmd_size, le16_to_cpu(host_cmd->seq_num));
 247         mwifiex_dbg_dump(adapter, CMD_D, "cmd buffer:", host_cmd, cmd_size);
 248
 249         if (adapter->iface_type == MWIFIEX_USB) {
 250                 tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
 251                 skb_push(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
 252                 memcpy(cmd_node->cmd_skb->data, &tmp, MWIFIEX_TYPE_LEN);
 253                 adapter->cmd_sent = true;
 254                 ret = adapter->if_ops.host_to_card(adapter,
 255                                                    MWIFIEX_USB_EP_CMD_EVENT,
 256                                                    cmd_node->cmd_skb, NULL);
 257                 skb_pull(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
 258                 if (ret == -EBUSY)
 259                         cmd_node->cmd_skb = NULL;
 260         } else {
 261                 skb_push(cmd_node->cmd_skb, INTF_HEADER_LEN);
 262                 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
 263                                                    cmd_node->cmd_skb, NULL);
 264                 skb_pull(cmd_node->cmd_skb, INTF_HEADER_LEN);
 265         }
 266
 267         if (ret == -1) {
 268                 mwifiex_dbg(adapter, ERROR,
 269                             "DNLD_CMD: host to card failed\n");
 270                 if (adapter->iface_type == MWIFIEX_USB)
 271                         adapter->cmd_sent = false;
 272                 if (cmd_node->wait_q_enabled)
 273                         adapter->cmd_wait_q.status = -1;
 274                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 275
 276                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 277                 adapter->curr_cmd = NULL;
 278                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 279
 280                 adapter->dbg.num_cmd_host_to_card_failure++;
 281                 return -1;
 282         }
 283
 284         /* Save the last command id and action to debug log */
 285         adapter->dbg.last_cmd_index =
 286                         (adapter->dbg.last_cmd_index + 1) % DBG_CMD_NUM;
 287         adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index] = cmd_code;
 288         adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index] =
 289                         le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN));
 290
 291         /* Clear BSS_NO_BITS from HostCmd */
 292         cmd_code &= HostCmd_CMD_ID_MASK;
 293
 294         /* Setup the timer after transmit command */
 295         mod_timer(&adapter->cmd_timer,
 296                   jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
 297
 298         return 0;
 299 }
 300
 301 /*
 302  * This function downloads a sleep confirm command to the firmware.
 303  *
 304  * The function performs sanity tests, sets the command sequence
 305  * number and size, converts the header fields to CPU format before
 306  * sending.
 307  *
 308  * No responses are needed for sleep confirm command.
 309  */
 310 static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
 311 {
 312         int ret;
 313         struct mwifiex_private *priv;
 314         struct mwifiex_opt_sleep_confirm *sleep_cfm_buf =
 315                                 (struct mwifiex_opt_sleep_confirm *)
 316                                                 adapter->sleep_cfm->data;
 317         struct sk_buff *sleep_cfm_tmp;
 318         __le32 tmp;
 319
 320         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 321
 322         adapter->seq_num++;
 323         sleep_cfm_buf->seq_num =
 324                 cpu_to_le16((HostCmd_SET_SEQ_NO_BSS_INFO
 325                                         (adapter->seq_num, priv->bss_num,
 326                                          priv->bss_type)));
 327
 328         mwifiex_dbg(adapter, CMD,
 329                     "cmd: DNLD_CMD: %#x, act %#x, len %d, seqno %#x\n",
 330                 le16_to_cpu(sleep_cfm_buf->command),
 331                 le16_to_cpu(sleep_cfm_buf->action),
 332                 le16_to_cpu(sleep_cfm_buf->size),
 333                 le16_to_cpu(sleep_cfm_buf->seq_num));
 334         mwifiex_dbg_dump(adapter, CMD_D, "SLEEP_CFM buffer: ", sleep_cfm_buf,
 335                          le16_to_cpu(sleep_cfm_buf->size));
 336
 337         if (adapter->iface_type == MWIFIEX_USB) {
 338                 sleep_cfm_tmp =
 339                         dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
 340                                       + MWIFIEX_TYPE_LEN);
 341                 skb_put(sleep_cfm_tmp, sizeof(struct mwifiex_opt_sleep_confirm)
 342                         + MWIFIEX_TYPE_LEN);
 343                 tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
 344                 memcpy(sleep_cfm_tmp->data, &tmp, MWIFIEX_TYPE_LEN);
 345                 memcpy(sleep_cfm_tmp->data + MWIFIEX_TYPE_LEN,
 346                        adapter->sleep_cfm->data,
 347                        sizeof(struct mwifiex_opt_sleep_confirm));
 348                 ret = adapter->if_ops.host_to_card(adapter,
 349                                                    MWIFIEX_USB_EP_CMD_EVENT,
 350                                                    sleep_cfm_tmp, NULL);
 351                 if (ret != -EBUSY)
 352                         dev_kfree_skb_any(sleep_cfm_tmp);
 353         } else {
 354                 skb_push(adapter->sleep_cfm, INTF_HEADER_LEN);
 355                 ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
 356                                                    adapter->sleep_cfm, NULL);
 357                 skb_pull(adapter->sleep_cfm, INTF_HEADER_LEN);
 358         }
 359
 360         if (ret == -1) {
 361                 mwifiex_dbg(adapter, ERROR, "SLEEP_CFM: failed\n");
 362                 adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure++;
 363                 return -1;
 364         }
 365
 366         if (!le16_to_cpu(sleep_cfm_buf->resp_ctrl))
 367                 /* Response is not needed for sleep confirm command */
 368                 adapter->ps_state = PS_STATE_SLEEP;
 369         else
 370                 adapter->ps_state = PS_STATE_SLEEP_CFM;
 371
 372         if (!le16_to_cpu(sleep_cfm_buf->resp_ctrl) &&
 373             (adapter->is_hs_configured &&
 374              !adapter->sleep_period.period)) {
 375                 adapter->pm_wakeup_card_req = true;
 376                 mwifiex_hs_activated_event(mwifiex_get_priv
 377                                 (adapter, MWIFIEX_BSS_ROLE_ANY), true);
 378         }
 379
 380         return ret;
 381 }
 382
 383 /*
 384  * This function allocates the command buffers and links them to
 385  * the command free queue.
 386  *
 387  * The driver uses a pre allocated number of command buffers, which
 388  * are created at driver initializations and freed at driver cleanup.
 389  * Every command needs to obtain a command buffer from this pool before
 390  * it can be issued. The command free queue lists the command buffers
 391  * currently free to use, while the command pending queue lists the
 392  * command buffers already in use and awaiting handling. Command buffers
 393  * are returned to the free queue after use.
 394  */
 395 int mwifiex_alloc_cmd_buffer(struct mwifiex_adapter *adapter)
 396 {
 397         struct cmd_ctrl_node *cmd_array;
 398         u32 i;
 399
 400         /* Allocate and initialize struct cmd_ctrl_node */
 401         cmd_array = kcalloc(MWIFIEX_NUM_OF_CMD_BUFFER,
 402                             sizeof(struct cmd_ctrl_node), GFP_KERNEL);
 403         if (!cmd_array)
 404                 return -ENOMEM;
 405
 406         adapter->cmd_pool = cmd_array;
 407
 408         /* Allocate and initialize command buffers */
 409         for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) {
 410                 cmd_array[i].skb = dev_alloc_skb(MWIFIEX_SIZE_OF_CMD_BUFFER);
 411                 if (!cmd_array[i].skb) {
 412                         mwifiex_dbg(adapter, ERROR,
 413                                     "unable to allocate command buffer\n");
 414                         return -ENOMEM;
 415                 }
 416         }
 417
 418         for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++)
 419                 mwifiex_insert_cmd_to_free_q(adapter, &cmd_array[i]);
 420
 421         return 0;
 422 }
 423
 424 /*
 425  * This function frees the command buffers.
 426  *
 427  * The function calls the completion callback for all the command
 428  * buffers that still have response buffers associated with them.
 429  */
 430 int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
 431 {
 432         struct cmd_ctrl_node *cmd_array;
 433         u32 i;
 434
 435         /* Need to check if cmd pool is allocated or not */
 436         if (!adapter->cmd_pool) {
 437                 mwifiex_dbg(adapter, FATAL,
 438                             "info: FREE_CMD_BUF: cmd_pool is null\n");
 439                 return 0;
 440         }
 441
 442         cmd_array = adapter->cmd_pool;
 443
 444         /* Release shared memory buffers */
 445         for (i = 0; i < MWIFIEX_NUM_OF_CMD_BUFFER; i++) {
 446                 if (cmd_array[i].skb) {
 447                         mwifiex_dbg(adapter, CMD,
 448                                     "cmd: free cmd buffer %d\n", i);
 449                         dev_kfree_skb_any(cmd_array[i].skb);
 450                 }
 451                 if (!cmd_array[i].resp_skb)
 452                         continue;
 453
 454                 if (adapter->iface_type == MWIFIEX_USB)
 455                         adapter->if_ops.cmdrsp_complete(adapter,
 456                                                         cmd_array[i].resp_skb);
 457                 else
 458                         dev_kfree_skb_any(cmd_array[i].resp_skb);
 459         }
 460         /* Release struct cmd_ctrl_node */
 461         if (adapter->cmd_pool) {
 462                 mwifiex_dbg(adapter, CMD,
 463                             "cmd: free cmd pool\n");
 464                 kfree(adapter->cmd_pool);
 465                 adapter->cmd_pool = NULL;
 466         }
 467
 468         return 0;
 469 }
 470
 471 /*
 472  * This function handles events generated by firmware.
 473  *
 474  * Event body of events received from firmware are not used (though they are
 475  * saved), only the event ID is used. Some events are re-invoked by
 476  * the driver, with a new event body.
 477  *
 478  * After processing, the function calls the completion callback
 479  * for cleanup.
 480  */
 481 int mwifiex_process_event(struct mwifiex_adapter *adapter)
 482 {
 483         int ret;
 484         struct mwifiex_private *priv =
 485                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 486         struct sk_buff *skb = adapter->event_skb;
 487         u32 eventcause = adapter->event_cause;
 488         struct mwifiex_rxinfo *rx_info;
 489
 490         /* Save the last event to debug log */
 491         adapter->dbg.last_event_index =
 492                         (adapter->dbg.last_event_index + 1) % DBG_CMD_NUM;
 493         adapter->dbg.last_event[adapter->dbg.last_event_index] =
 494                                                         (u16) eventcause;
 495
 496         /* Get BSS number and corresponding priv */
 497         priv = mwifiex_get_priv_by_id(adapter, EVENT_GET_BSS_NUM(eventcause),
 498                                       EVENT_GET_BSS_TYPE(eventcause));
 499         if (!priv)
 500                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 501
 502         /* Clear BSS_NO_BITS from event */
 503         eventcause &= EVENT_ID_MASK;
 504         adapter->event_cause = eventcause;
 505
 506         if (skb) {
 507                 rx_info = MWIFIEX_SKB_RXCB(skb);
 508                 memset(rx_info, 0, sizeof(*rx_info));
 509                 rx_info->bss_num = priv->bss_num;
 510                 rx_info->bss_type = priv->bss_type;
 511                 mwifiex_dbg_dump(adapter, EVT_D, "Event Buf:",
 512                                  skb->data, skb->len);
 513         }
 514
 515         mwifiex_dbg(adapter, EVENT, "EVENT: cause: %#x\n", eventcause);
 516
 517         if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP)
 518                 ret = mwifiex_process_uap_event(priv);
 519         else
 520                 ret = mwifiex_process_sta_event(priv);
 521
 522         adapter->event_cause = 0;
 523         adapter->event_skb = NULL;
 524         adapter->if_ops.event_complete(adapter, skb);
 525
 526         return ret;
 527 }
 528
 529 /*
 530  * This function prepares a command and send it to the firmware.
 531  *
 532  * Preparation includes -
 533  *      - Sanity tests to make sure the card is still present or the FW
 534  *        is not reset
 535  *      - Getting a new command node from the command free queue
 536  *      - Initializing the command node for default parameters
 537  *      - Fill up the non-default parameters and buffer pointers
 538  *      - Add the command to pending queue
 539  */
 540 int mwifiex_send_cmd(struct mwifiex_private *priv, u16 cmd_no,
 541                      u16 cmd_action, u32 cmd_oid, void *data_buf, bool sync)
 542 {
 543         int ret;
 544         struct mwifiex_adapter *adapter = priv->adapter;
 545         struct cmd_ctrl_node *cmd_node;
 546         struct host_cmd_ds_command *cmd_ptr;
 547
 548         if (!adapter) {
 549                 pr_err("PREP_CMD: adapter is NULL\n");
 550                 return -1;
 551         }
 552
 553         if (adapter->is_suspended) {
 554                 mwifiex_dbg(adapter, ERROR,
 555                             "PREP_CMD: device in suspended state\n");
 556                 return -1;
 557         }
 558
 559         if (adapter->hs_enabling && cmd_no != HostCmd_CMD_802_11_HS_CFG_ENH) {
 560                 mwifiex_dbg(adapter, ERROR,
 561                             "PREP_CMD: host entering sleep state\n");
 562                 return -1;
 563         }
 564
 565         if (adapter->surprise_removed) {
 566                 mwifiex_dbg(adapter, ERROR,
 567                             "PREP_CMD: card is removed\n");
 568                 return -1;
 569         }
 570
 571         if (adapter->is_cmd_timedout) {
 572                 mwifiex_dbg(adapter, ERROR,
 573                             "PREP_CMD: FW is in bad state\n");
 574                 return -1;
 575         }
 576
 577         if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET) {
 578                 if (cmd_no != HostCmd_CMD_FUNC_INIT) {
 579                         mwifiex_dbg(adapter, ERROR,
 580                                     "PREP_CMD: FW in reset state\n");
 581                         return -1;
 582                 }
 583         }
 584
 585         /* Get a new command node */
 586         cmd_node = mwifiex_get_cmd_node(adapter);
 587
 588         if (!cmd_node) {
 589                 mwifiex_dbg(adapter, ERROR,
 590                             "PREP_CMD: no free cmd node\n");
 591                 return -1;
 592         }
 593
 594         /* Initialize the command node */
 595         mwifiex_init_cmd_node(priv, cmd_node, cmd_oid, data_buf, sync);
 596
 597         if (!cmd_node->cmd_skb) {
 598                 mwifiex_dbg(adapter, ERROR,
 599                             "PREP_CMD: no free cmd buf\n");
 600                 return -1;
 601         }
 602
 603         memset(skb_put(cmd_node->cmd_skb, sizeof(struct host_cmd_ds_command)),
 604                0, sizeof(struct host_cmd_ds_command));
 605
 606         cmd_ptr = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 607         cmd_ptr->command = cpu_to_le16(cmd_no);
 608         cmd_ptr->result = 0;
 609
 610         /* Prepare command */
 611         if (cmd_no) {
 612                 switch (cmd_no) {
 613                 case HostCmd_CMD_UAP_SYS_CONFIG:
 614                 case HostCmd_CMD_UAP_BSS_START:
 615                 case HostCmd_CMD_UAP_BSS_STOP:
 616                 case HostCmd_CMD_UAP_STA_DEAUTH:
 617                 case HOST_CMD_APCMD_SYS_RESET:
 618                 case HOST_CMD_APCMD_STA_LIST:
 619                         ret = mwifiex_uap_prepare_cmd(priv, cmd_no, cmd_action,
 620                                                       cmd_oid, data_buf,
 621                                                       cmd_ptr);
 622                         break;
 623                 default:
 624                         ret = mwifiex_sta_prepare_cmd(priv, cmd_no, cmd_action,
 625                                                       cmd_oid, data_buf,
 626                                                       cmd_ptr);
 627                         break;
 628                 }
 629         } else {
 630                 ret = mwifiex_cmd_host_cmd(priv, cmd_ptr, data_buf);
 631                 cmd_node->cmd_flag |= CMD_F_HOSTCMD;
 632         }
 633
 634         /* Return error, since the command preparation failed */
 635         if (ret) {
 636                 mwifiex_dbg(adapter, ERROR,
 637                             "PREP_CMD: cmd %#x preparation failed\n",
 638                         cmd_no);
 639                 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 640                 return -1;
 641         }
 642
 643         /* Send command */
 644         if (cmd_no == HostCmd_CMD_802_11_SCAN ||
 645             cmd_no == HostCmd_CMD_802_11_SCAN_EXT) {
 646                 mwifiex_queue_scan_cmd(priv, cmd_node);
 647         } else {
 648                 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true);
 649                 queue_work(adapter->workqueue, &adapter->main_work);
 650                 if (cmd_node->wait_q_enabled)
 651                         ret = mwifiex_wait_queue_complete(adapter, cmd_node);
 652         }
 653
 654         return ret;
 655 }
 656
 657 /*
 658  * This function queues a command to the command pending queue.
 659  *
 660  * This in effect adds the command to the command list to be executed.
 661  * Exit PS command is handled specially, by placing it always to the
 662  * front of the command queue.
 663  */
 664 void
 665 mwifiex_insert_cmd_to_pending_q(struct mwifiex_adapter *adapter,
 666                                 struct cmd_ctrl_node *cmd_node, u32 add_tail)
 667 {
 668         struct host_cmd_ds_command *host_cmd = NULL;
 669         u16 command;
 670         unsigned long flags;
 671
 672         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 673         if (!host_cmd) {
 674                 mwifiex_dbg(adapter, ERROR, "QUEUE_CMD: host_cmd is NULL\n");
 675                 return;
 676         }
 677
 678         command = le16_to_cpu(host_cmd->command);
 679
 680         /* Exit_PS command needs to be queued in the header always. */
 681         if (command == HostCmd_CMD_802_11_PS_MODE_ENH) {
 682                 struct host_cmd_ds_802_11_ps_mode_enh *pm =
 683                                                 &host_cmd->params.psmode_enh;
 684                 if ((le16_to_cpu(pm->action) == DIS_PS) ||
 685                     (le16_to_cpu(pm->action) == DIS_AUTO_PS)) {
 686                         if (adapter->ps_state != PS_STATE_AWAKE)
 687                                 add_tail = false;
 688                 }
 689         }
 690
 691         spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
 692         if (add_tail)
 693                 list_add_tail(&cmd_node->list, &adapter->cmd_pending_q);
 694         else
 695                 list_add(&cmd_node->list, &adapter->cmd_pending_q);
 696         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
 697
 698         atomic_inc(&adapter->cmd_pending);
 699         mwifiex_dbg(adapter, CMD,
 700                     "cmd: QUEUE_CMD: cmd=%#x, cmd_pending=%d\n",
 701                 command, atomic_read(&adapter->cmd_pending));
 702 }
 703
 704 /*
 705  * This function executes the next command in command pending queue.
 706  *
 707  * This function will fail if a command is already in processing stage,
 708  * otherwise it will dequeue the first command from the command pending
 709  * queue and send to the firmware.
 710  *
 711  * If the device is currently in host sleep mode, any commands, except the
 712  * host sleep configuration command will de-activate the host sleep. For PS
 713  * mode, the function will put the firmware back to sleep if applicable.
 714  */
 715 int mwifiex_exec_next_cmd(struct mwifiex_adapter *adapter)
 716 {
 717         struct mwifiex_private *priv;
 718         struct cmd_ctrl_node *cmd_node;
 719         int ret = 0;
 720         struct host_cmd_ds_command *host_cmd;
 721         unsigned long cmd_flags;
 722         unsigned long cmd_pending_q_flags;
 723
 724         /* Check if already in processing */
 725         if (adapter->curr_cmd) {
 726                 mwifiex_dbg(adapter, FATAL,
 727                             "EXEC_NEXT_CMD: cmd in processing\n");
 728                 return -1;
 729         }
 730
 731         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
 732         /* Check if any command is pending */
 733         spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
 734         if (list_empty(&adapter->cmd_pending_q)) {
 735                 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 736                                        cmd_pending_q_flags);
 737                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 738                 return 0;
 739         }
 740         cmd_node = list_first_entry(&adapter->cmd_pending_q,
 741                                     struct cmd_ctrl_node, list);
 742         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 743                                cmd_pending_q_flags);
 744
 745         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 746         priv = cmd_node->priv;
 747
 748         if (adapter->ps_state != PS_STATE_AWAKE) {
 749                 mwifiex_dbg(adapter, ERROR,
 750                             "%s: cannot send cmd in sleep state,\t"
 751                             "this should not happen\n", __func__);
 752                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 753                 return ret;
 754         }
 755
 756         spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
 757         list_del(&cmd_node->list);
 758         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 759                                cmd_pending_q_flags);
 760
 761         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 762         ret = mwifiex_dnld_cmd_to_fw(priv, cmd_node);
 763         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 764         /* Any command sent to the firmware when host is in sleep
 765          * mode should de-configure host sleep. We should skip the
 766          * host sleep configuration command itself though
 767          */
 768         if (priv && (host_cmd->command !=
 769              cpu_to_le16(HostCmd_CMD_802_11_HS_CFG_ENH))) {
 770                 if (adapter->hs_activated) {
 771                         adapter->is_hs_configured = false;
 772                         mwifiex_hs_activated_event(priv, false);
 773                 }
 774         }
 775
 776         return ret;
 777 }
 778
 779 /*
 780  * This function handles the command response.
 781  *
 782  * After processing, the function cleans the command node and puts
 783  * it back to the command free queue.
 784  */
 785 int mwifiex_process_cmdresp(struct mwifiex_adapter *adapter)
 786 {
 787         struct host_cmd_ds_command *resp;
 788         struct mwifiex_private *priv =
 789                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 790         int ret = 0;
 791         uint16_t orig_cmdresp_no;
 792         uint16_t cmdresp_no;
 793         uint16_t cmdresp_result;
 794         unsigned long flags;
 795
 796         /* Now we got response from FW, cancel the command timer */
 797         del_timer_sync(&adapter->cmd_timer);
 798
 799         if (!adapter->curr_cmd || !adapter->curr_cmd->resp_skb) {
 800                 resp = (struct host_cmd_ds_command *) adapter->upld_buf;
 801                 mwifiex_dbg(adapter, ERROR,
 802                             "CMD_RESP: NULL curr_cmd, %#x\n",
 803                             le16_to_cpu(resp->command));
 804                 return -1;
 805         }
 806
 807         adapter->is_cmd_timedout = 0;
 808
 809         resp = (struct host_cmd_ds_command *) adapter->curr_cmd->resp_skb->data;
 810         if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
 811                 /* Copy original response back to response buffer */
 812                 struct mwifiex_ds_misc_cmd *hostcmd;
 813                 uint16_t size = le16_to_cpu(resp->size);
 814                 mwifiex_dbg(adapter, INFO,
 815                             "info: host cmd resp size = %d\n", size);
 816                 size = min_t(u16, size, MWIFIEX_SIZE_OF_CMD_BUFFER);
 817                 if (adapter->curr_cmd->data_buf) {
 818                         hostcmd = adapter->curr_cmd->data_buf;
 819                         hostcmd->len = size;
 820                         memcpy(hostcmd->cmd, resp, size);
 821                 }
 822         }
 823         orig_cmdresp_no = le16_to_cpu(resp->command);
 824
 825         /* Get BSS number and corresponding priv */
 826         priv = mwifiex_get_priv_by_id(adapter,
 827                              HostCmd_GET_BSS_NO(le16_to_cpu(resp->seq_num)),
 828                              HostCmd_GET_BSS_TYPE(le16_to_cpu(resp->seq_num)));
 829         if (!priv)
 830                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 831         /* Clear RET_BIT from HostCmd */
 832         resp->command = cpu_to_le16(orig_cmdresp_no & HostCmd_CMD_ID_MASK);
 833
 834         cmdresp_no = le16_to_cpu(resp->command);
 835         cmdresp_result = le16_to_cpu(resp->result);
 836
 837         /* Save the last command response to debug log */
 838         adapter->dbg.last_cmd_resp_index =
 839                         (adapter->dbg.last_cmd_resp_index + 1) % DBG_CMD_NUM;
 840         adapter->dbg.last_cmd_resp_id[adapter->dbg.last_cmd_resp_index] =
 841                                                                 orig_cmdresp_no;
 842
 843         mwifiex_dbg(adapter, CMD,
 844                     "cmd: CMD_RESP: 0x%x, result %d, len %d, seqno 0x%x\n",
 845                     orig_cmdresp_no, cmdresp_result,
 846                     le16_to_cpu(resp->size), le16_to_cpu(resp->seq_num));
 847         mwifiex_dbg_dump(adapter, CMD_D, "CMD_RESP buffer:", resp,
 848                          le16_to_cpu(resp->size));
 849
 850         if (!(orig_cmdresp_no & HostCmd_RET_BIT)) {
 851                 mwifiex_dbg(adapter, ERROR, "CMD_RESP: invalid cmd resp\n");
 852                 if (adapter->curr_cmd->wait_q_enabled)
 853                         adapter->cmd_wait_q.status = -1;
 854
 855                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 856                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 857                 adapter->curr_cmd = NULL;
 858                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 859                 return -1;
 860         }
 861
 862         if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
 863                 adapter->curr_cmd->cmd_flag &= ~CMD_F_HOSTCMD;
 864                 if ((cmdresp_result == HostCmd_RESULT_OK) &&
 865                     (cmdresp_no == HostCmd_CMD_802_11_HS_CFG_ENH))
 866                         ret = mwifiex_ret_802_11_hs_cfg(priv, resp);
 867         } else {
 868                 /* handle response */
 869                 ret = mwifiex_process_sta_cmdresp(priv, cmdresp_no, resp);
 870         }
 871
 872         /* Check init command response */
 873         if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING) {
 874                 if (ret) {
 875                         mwifiex_dbg(adapter, ERROR,
 876                                     "%s: cmd %#x failed during\t"
 877                                     "initialization\n", __func__, cmdresp_no);
 878                         mwifiex_init_fw_complete(adapter);
 879                         return -1;
 880                 } else if (adapter->last_init_cmd == cmdresp_no)
 881                         adapter->hw_status = MWIFIEX_HW_STATUS_INIT_DONE;
 882         }
 883
 884         if (adapter->curr_cmd) {
 885                 if (adapter->curr_cmd->wait_q_enabled)
 886                         adapter->cmd_wait_q.status = ret;
 887
 888                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 889
 890                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 891                 adapter->curr_cmd = NULL;
 892                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 893         }
 894
 895         return ret;
 896 }
 897
 898 /*
 899  * This function handles the timeout of command sending.
 900  *
 901  * It will re-send the same command again.
 902  */
 903 void
 904 mwifiex_cmd_timeout_func(unsigned long function_context)
 905 {
 906         struct mwifiex_adapter *adapter =
 907                 (struct mwifiex_adapter *) function_context;
 908         struct cmd_ctrl_node *cmd_node;
 909
 910         adapter->is_cmd_timedout = 1;
 911         if (!adapter->curr_cmd) {
 912                 mwifiex_dbg(adapter, ERROR,
 913                             "cmd: empty curr_cmd\n");
 914                 return;
 915         }
 916         cmd_node = adapter->curr_cmd;
 917         if (cmd_node) {
 918                 adapter->dbg.timeout_cmd_id =
 919                         adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index];
 920                 adapter->dbg.timeout_cmd_act =
 921                         adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index];
 922                 mwifiex_dbg(adapter, MSG,
 923                             "%s: Timeout cmd id = %#x, act = %#x\n", __func__,
 924                             adapter->dbg.timeout_cmd_id,
 925                             adapter->dbg.timeout_cmd_act);
 926
 927                 mwifiex_dbg(adapter, MSG,
 928                             "num_data_h2c_failure = %d\n",
 929                             adapter->dbg.num_tx_host_to_card_failure);
 930                 mwifiex_dbg(adapter, MSG,
 931                             "num_cmd_h2c_failure = %d\n",
 932                             adapter->dbg.num_cmd_host_to_card_failure);
 933
 934                 mwifiex_dbg(adapter, MSG,
 935                             "is_cmd_timedout = %d\n",
 936                             adapter->is_cmd_timedout);
 937                 mwifiex_dbg(adapter, MSG,
 938                             "num_tx_timeout = %d\n",
 939                             adapter->dbg.num_tx_timeout);
 940
 941                 mwifiex_dbg(adapter, MSG,
 942                             "last_cmd_index = %d\n",
 943                             adapter->dbg.last_cmd_index);
 944                 mwifiex_dbg(adapter, MSG,
 945                             "last_cmd_id: %*ph\n",
 946                             (int)sizeof(adapter->dbg.last_cmd_id),
 947                             adapter->dbg.last_cmd_id);
 948                 mwifiex_dbg(adapter, MSG,
 949                             "last_cmd_act: %*ph\n",
 950                             (int)sizeof(adapter->dbg.last_cmd_act),
 951                             adapter->dbg.last_cmd_act);
 952
 953                 mwifiex_dbg(adapter, MSG,
 954                             "last_cmd_resp_index = %d\n",
 955                             adapter->dbg.last_cmd_resp_index);
 956                 mwifiex_dbg(adapter, MSG,
 957                             "last_cmd_resp_id: %*ph\n",
 958                             (int)sizeof(adapter->dbg.last_cmd_resp_id),
 959                             adapter->dbg.last_cmd_resp_id);
 960
 961                 mwifiex_dbg(adapter, MSG,
 962                             "last_event_index = %d\n",
 963                             adapter->dbg.last_event_index);
 964                 mwifiex_dbg(adapter, MSG,
 965                             "last_event: %*ph\n",
 966                             (int)sizeof(adapter->dbg.last_event),
 967                             adapter->dbg.last_event);
 968
 969                 mwifiex_dbg(adapter, MSG,
 970                             "data_sent=%d cmd_sent=%d\n",
 971                             adapter->data_sent, adapter->cmd_sent);
 972
 973                 mwifiex_dbg(adapter, MSG,
 974                             "ps_mode=%d ps_state=%d\n",
 975                             adapter->ps_mode, adapter->ps_state);
 976
 977                 if (cmd_node->wait_q_enabled) {
 978                         adapter->cmd_wait_q.status = -ETIMEDOUT;
 979                         mwifiex_cancel_pending_ioctl(adapter);
 980                 }
 981         }
 982         if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING) {
 983                 mwifiex_init_fw_complete(adapter);
 984                 return;
 985         }
 986
 987         if (adapter->if_ops.device_dump)
 988                 adapter->if_ops.device_dump(adapter);
 989
 990         if (adapter->if_ops.card_reset)
 991                 adapter->if_ops.card_reset(adapter);
 992 }
 993
 994 void
 995 mwifiex_cancel_pending_scan_cmd(struct mwifiex_adapter *adapter)
 996 {
 997         struct cmd_ctrl_node *cmd_node = NULL, *tmp_node;
 998         unsigned long flags;
 999
1000         /* Cancel all pending scan command */
1001         spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
1002         list_for_each_entry_safe(cmd_node, tmp_node,
1003                                  &adapter->scan_pending_q, list) {
1004                 list_del(&cmd_node->list);
1005                 cmd_node->wait_q_enabled = false;
1006                 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
1007         }
1008         spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
1009 }
1010
1011 /*
1012  * This function cancels all the pending commands.
1013  *
1014  * The current command, all commands in command pending queue and all scan
1015  * commands in scan pending queue are cancelled. All the completion callbacks
1016  * are called with failure status to ensure cleanup.
1017  */
1018 void
1019 mwifiex_cancel_all_pending_cmd(struct mwifiex_adapter *adapter)
1020 {
1021         struct cmd_ctrl_node *cmd_node = NULL, *tmp_node;
1022         unsigned long flags, cmd_flags;
1023
1024         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
1025         /* Cancel current cmd */
1026         if ((adapter->curr_cmd) && (adapter->curr_cmd->wait_q_enabled)) {
1027                 adapter->cmd_wait_q.status = -1;
1028                 mwifiex_complete_cmd(adapter, adapter->curr_cmd);
1029                 adapter->curr_cmd->wait_q_enabled = false;
1030                 /* no recycle probably wait for response */
1031         }
1032         /* Cancel all pending command */
1033         spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1034         list_for_each_entry_safe(cmd_node, tmp_node,
1035                                  &adapter->cmd_pending_q, list) {
1036                 list_del(&cmd_node->list);
1037                 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1038
1039                 if (cmd_node->wait_q_enabled)
1040                         adapter->cmd_wait_q.status = -1;
1041                 mwifiex_recycle_cmd_node(adapter, cmd_node);
1042                 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1043         }
1044         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1045         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1046
1047         mwifiex_cancel_scan(adapter);
1048 }
1049
1050 /*
1051  * This function cancels all pending commands that matches with
1052  * the given IOCTL request.
1053  *
1054  * Both the current command buffer and the pending command queue are
1055  * searched for matching IOCTL request. The completion callback of
1056  * the matched command is called with failure status to ensure cleanup.
1057  * In case of scan commands, all pending commands in scan pending queue
1058  * are cancelled.
1059  */
1060 void
1061 mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter)
1062 {
1063         struct cmd_ctrl_node *cmd_node = NULL;
1064         unsigned long cmd_flags;
1065
1066         if ((adapter->curr_cmd) &&
1067             (adapter->curr_cmd->wait_q_enabled)) {
1068                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
1069                 cmd_node = adapter->curr_cmd;
1070                 /* setting curr_cmd to NULL is quite dangerous, because
1071                  * mwifiex_process_cmdresp checks curr_cmd to be != NULL
1072                  * at the beginning then relies on it and dereferences
1073                  * it at will
1074                  * this probably works since mwifiex_cmd_timeout_func
1075                  * is the only caller of this function and responses
1076                  * at that point
1077                  */
1078                 adapter->curr_cmd = NULL;
1079                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1080
1081                 mwifiex_recycle_cmd_node(adapter, cmd_node);
1082         }
1083
1084         mwifiex_cancel_scan(adapter);
1085 }
1086
1087 /*
1088  * This function sends the sleep confirm command to firmware, if
1089  * possible.
1090  *
1091  * The sleep confirm command cannot be issued if command response,
1092  * data response or event response is awaiting handling, or if we
1093  * are in the middle of sending a command, or expecting a command
1094  * response.
1095  */
1096 void
1097 mwifiex_check_ps_cond(struct mwifiex_adapter *adapter)
1098 {
1099         if (!adapter->cmd_sent &&
1100             !adapter->curr_cmd && !IS_CARD_RX_RCVD(adapter))
1101                 mwifiex_dnld_sleep_confirm_cmd(adapter);
1102         else
1103                 mwifiex_dbg(adapter, CMD,
1104                             "cmd: Delay Sleep Confirm (%s%s%s)\n",
1105                             (adapter->cmd_sent) ? "D" : "",
1106                             (adapter->curr_cmd) ? "C" : "",
1107                             (IS_CARD_RX_RCVD(adapter)) ? "R" : "");
1108 }
1109
1110 /*
1111  * This function sends a Host Sleep activated event to applications.
1112  *
1113  * This event is generated by the driver, with a blank event body.
1114  */
1115 void
1116 mwifiex_hs_activated_event(struct mwifiex_private *priv, u8 activated)
1117 {
1118         if (activated) {
1119                 if (priv->adapter->is_hs_configured) {
1120                         priv->adapter->hs_activated = true;
1121                         mwifiex_update_rxreor_flags(priv->adapter,
1122                                                     RXREOR_FORCE_NO_DROP);
1123                         mwifiex_dbg(priv->adapter, EVENT,
1124                                     "event: hs_activated\n");
1125                         priv->adapter->hs_activate_wait_q_woken = true;
1126                         wake_up_interruptible(
1127                                 &priv->adapter->hs_activate_wait_q);
1128                 } else {
1129                         mwifiex_dbg(priv->adapter, EVENT,
1130                                     "event: HS not configured\n");
1131                 }
1132         } else {
1133                 mwifiex_dbg(priv->adapter, EVENT,
1134                             "event: hs_deactivated\n");
1135                 priv->adapter->hs_activated = false;
1136         }
1137 }
1138
1139 /*
1140  * This function handles the command response of a Host Sleep configuration
1141  * command.
1142  *
1143  * Handling includes changing the header fields into CPU format
1144  * and setting the current host sleep activation status in driver.
1145  *
1146  * In case host sleep status change, the function generates an event to
1147  * notify the applications.
1148  */
1149 int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv,
1150                               struct host_cmd_ds_command *resp)
1151 {
1152         struct mwifiex_adapter *adapter = priv->adapter;
1153         struct host_cmd_ds_802_11_hs_cfg_enh *phs_cfg =
1154                 &resp->params.opt_hs_cfg;
1155         uint32_t conditions = le32_to_cpu(phs_cfg->params.hs_config.conditions);
1156
1157         if (phs_cfg->action == cpu_to_le16(HS_ACTIVATE) &&
1158             adapter->iface_type != MWIFIEX_USB) {
1159                 mwifiex_hs_activated_event(priv, true);
1160                 return 0;
1161         } else {
1162                 mwifiex_dbg(adapter, CMD,
1163                             "cmd: CMD_RESP: HS_CFG cmd reply\t"
1164                             " result=%#x, conditions=0x%x gpio=0x%x gap=0x%x\n",
1165                             resp->result, conditions,
1166                             phs_cfg->params.hs_config.gpio,
1167                             phs_cfg->params.hs_config.gap);
1168         }
1169         if (conditions != HS_CFG_CANCEL) {
1170                 adapter->is_hs_configured = true;
1171                 if (adapter->iface_type == MWIFIEX_USB)
1172                         mwifiex_hs_activated_event(priv, true);
1173         } else {
1174                 adapter->is_hs_configured = false;
1175                 if (adapter->hs_activated)
1176                         mwifiex_hs_activated_event(priv, false);
1177         }
1178
1179         return 0;
1180 }
1181
1182 /*
1183  * This function wakes up the adapter and generates a Host Sleep
1184  * cancel event on receiving the power up interrupt.
1185  */
1186 void
1187 mwifiex_process_hs_config(struct mwifiex_adapter *adapter)
1188 {
1189         mwifiex_dbg(adapter, INFO,
1190                     "info: %s: auto cancelling host sleep\t"
1191                     "since there is interrupt from the firmware\n",
1192                     __func__);
1193
1194         adapter->if_ops.wakeup(adapter);
1195         adapter->hs_activated = false;
1196         adapter->is_hs_configured = false;
1197         adapter->is_suspended = false;
1198         mwifiex_hs_activated_event(mwifiex_get_priv(adapter,
1199                                                     MWIFIEX_BSS_ROLE_ANY),
1200                                    false);
1201 }
1202 EXPORT_SYMBOL_GPL(mwifiex_process_hs_config);
1203
1204 /*
1205  * This function handles the command response of a sleep confirm command.
1206  *
1207  * The function sets the card state to SLEEP if the response indicates success.
1208  */
1209 void
1210 mwifiex_process_sleep_confirm_resp(struct mwifiex_adapter *adapter,
1211                                    u8 *pbuf, u32 upld_len)
1212 {
1213         struct host_cmd_ds_command *cmd = (struct host_cmd_ds_command *) pbuf;
1214         struct mwifiex_private *priv =
1215                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1216         uint16_t result = le16_to_cpu(cmd->result);
1217         uint16_t command = le16_to_cpu(cmd->command);
1218         uint16_t seq_num = le16_to_cpu(cmd->seq_num);
1219
1220         if (!upld_len) {
1221                 mwifiex_dbg(adapter, ERROR,
1222                             "%s: cmd size is 0\n", __func__);
1223                 return;
1224         }
1225
1226         mwifiex_dbg(adapter, CMD,
1227                     "cmd: CMD_RESP: 0x%x, result %d, len %d, seqno 0x%x\n",
1228                     command, result, le16_to_cpu(cmd->size), seq_num);
1229
1230         /* Get BSS number and corresponding priv */
1231         priv = mwifiex_get_priv_by_id(adapter, HostCmd_GET_BSS_NO(seq_num),
1232                                       HostCmd_GET_BSS_TYPE(seq_num));
1233         if (!priv)
1234                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1235
1236         /* Update sequence number */
1237         seq_num = HostCmd_GET_SEQ_NO(seq_num);
1238         /* Clear RET_BIT from HostCmd */
1239         command &= HostCmd_CMD_ID_MASK;
1240
1241         if (command != HostCmd_CMD_802_11_PS_MODE_ENH) {
1242                 mwifiex_dbg(adapter, ERROR,
1243                             "%s: rcvd unexpected resp for cmd %#x, result = %x\n",
1244                             __func__, command, result);
1245                 return;
1246         }
1247
1248         if (result) {
1249                 mwifiex_dbg(adapter, ERROR,
1250                             "%s: sleep confirm cmd failed\n",
1251                             __func__);
1252                 adapter->pm_wakeup_card_req = false;
1253                 adapter->ps_state = PS_STATE_AWAKE;
1254                 return;
1255         }
1256         adapter->pm_wakeup_card_req = true;
1257         if (adapter->is_hs_configured)
1258                 mwifiex_hs_activated_event(mwifiex_get_priv
1259                                                 (adapter, MWIFIEX_BSS_ROLE_ANY),
1260                                            true);
1261         adapter->ps_state = PS_STATE_SLEEP;
1262         cmd->command = cpu_to_le16(command);
1263         cmd->seq_num = cpu_to_le16(seq_num);
1264 }
1265 EXPORT_SYMBOL_GPL(mwifiex_process_sleep_confirm_resp);
1266
1267 /*
1268  * This function prepares an enhanced power mode command.
1269  *
1270  * This function can be used to disable power save or to configure
1271  * power save with auto PS or STA PS or auto deep sleep.
1272  *
1273  * Preparation includes -
1274  *      - Setting command ID, action and proper size
1275  *      - Setting Power Save bitmap, PS parameters TLV, PS mode TLV,
1276  *        auto deep sleep TLV (as required)
1277  *      - Ensuring correct endian-ness
1278  */
1279 int mwifiex_cmd_enh_power_mode(struct mwifiex_private *priv,
1280                                struct host_cmd_ds_command *cmd,
1281                                u16 cmd_action, uint16_t ps_bitmap,
1282                                struct mwifiex_ds_auto_ds *auto_ds)
1283 {
1284         struct host_cmd_ds_802_11_ps_mode_enh *psmode_enh =
1285                 &cmd->params.psmode_enh;
1286         u8 *tlv;
1287         u16 cmd_size = 0;
1288
1289         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
1290         if (cmd_action == DIS_AUTO_PS) {
1291                 psmode_enh->action = cpu_to_le16(DIS_AUTO_PS);
1292                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1293                 cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
1294                                         sizeof(psmode_enh->params.ps_bitmap));
1295         } else if (cmd_action == GET_PS) {
1296                 psmode_enh->action = cpu_to_le16(GET_PS);
1297                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1298                 cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
1299                                         sizeof(psmode_enh->params.ps_bitmap));
1300         } else if (cmd_action == EN_AUTO_PS) {
1301                 psmode_enh->action = cpu_to_le16(EN_AUTO_PS);
1302                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1303                 cmd_size = S_DS_GEN + sizeof(psmode_enh->action) +
1304                                         sizeof(psmode_enh->params.ps_bitmap);
1305                 tlv = (u8 *) cmd + cmd_size;
1306                 if (ps_bitmap & BITMAP_STA_PS) {
1307                         struct mwifiex_adapter *adapter = priv->adapter;
1308                         struct mwifiex_ie_types_ps_param *ps_tlv =
1309                                 (struct mwifiex_ie_types_ps_param *) tlv;
1310                         struct mwifiex_ps_param *ps_mode = &ps_tlv->param;
1311                         ps_tlv->header.type = cpu_to_le16(TLV_TYPE_PS_PARAM);
1312                         ps_tlv->header.len = cpu_to_le16(sizeof(*ps_tlv) -
1313                                         sizeof(struct mwifiex_ie_types_header));
1314                         cmd_size += sizeof(*ps_tlv);
1315                         tlv += sizeof(*ps_tlv);
1316                         mwifiex_dbg(priv->adapter, CMD,
1317                                     "cmd: PS Command: Enter PS\n");
1318                         ps_mode->null_pkt_interval =
1319                                         cpu_to_le16(adapter->null_pkt_interval);
1320                         ps_mode->multiple_dtims =
1321                                         cpu_to_le16(adapter->multiple_dtim);
1322                         ps_mode->bcn_miss_timeout =
1323                                         cpu_to_le16(adapter->bcn_miss_time_out);
1324                         ps_mode->local_listen_interval =
1325                                 cpu_to_le16(adapter->local_listen_interval);
1326                         ps_mode->adhoc_wake_period =
1327                                 cpu_to_le16(adapter->adhoc_awake_period);
1328                         ps_mode->delay_to_ps =
1329                                         cpu_to_le16(adapter->delay_to_ps);
1330                         ps_mode->mode = cpu_to_le16(adapter->enhanced_ps_mode);
1331
1332                 }
1333                 if (ps_bitmap & BITMAP_AUTO_DS) {
1334                         struct mwifiex_ie_types_auto_ds_param *auto_ds_tlv =
1335                                 (struct mwifiex_ie_types_auto_ds_param *) tlv;
1336                         u16 idletime = 0;
1337
1338                         auto_ds_tlv->header.type =
1339                                 cpu_to_le16(TLV_TYPE_AUTO_DS_PARAM);
1340                         auto_ds_tlv->header.len =
1341                                 cpu_to_le16(sizeof(*auto_ds_tlv) -
1342                                         sizeof(struct mwifiex_ie_types_header));
1343                         cmd_size += sizeof(*auto_ds_tlv);
1344                         tlv += sizeof(*auto_ds_tlv);
1345                         if (auto_ds)
1346                                 idletime = auto_ds->idle_time;
1347                         mwifiex_dbg(priv->adapter, CMD,
1348                                     "cmd: PS Command: Enter Auto Deep Sleep\n");
1349                         auto_ds_tlv->deep_sleep_timeout = cpu_to_le16(idletime);
1350                 }
1351                 cmd->size = cpu_to_le16(cmd_size);
1352         }
1353         return 0;
1354 }
1355
1356 /*
1357  * This function handles the command response of an enhanced power mode
1358  * command.
1359  *
1360  * Handling includes changing the header fields into CPU format
1361  * and setting the current enhanced power mode in driver.
1362  */
1363 int mwifiex_ret_enh_power_mode(struct mwifiex_private *priv,
1364                                struct host_cmd_ds_command *resp,
1365                                struct mwifiex_ds_pm_cfg *pm_cfg)
1366 {
1367         struct mwifiex_adapter *adapter = priv->adapter;
1368         struct host_cmd_ds_802_11_ps_mode_enh *ps_mode =
1369                 &resp->params.psmode_enh;
1370         uint16_t action = le16_to_cpu(ps_mode->action);
1371         uint16_t ps_bitmap = le16_to_cpu(ps_mode->params.ps_bitmap);
1372         uint16_t auto_ps_bitmap =
1373                 le16_to_cpu(ps_mode->params.ps_bitmap);
1374
1375         mwifiex_dbg(adapter, INFO,
1376                     "info: %s: PS_MODE cmd reply result=%#x action=%#X\n",
1377                     __func__, resp->result, action);
1378         if (action == EN_AUTO_PS) {
1379                 if (auto_ps_bitmap & BITMAP_AUTO_DS) {
1380                         mwifiex_dbg(adapter, CMD,
1381                                     "cmd: Enabled auto deep sleep\n");
1382                         priv->adapter->is_deep_sleep = true;
1383                 }
1384                 if (auto_ps_bitmap & BITMAP_STA_PS) {
1385                         mwifiex_dbg(adapter, CMD,
1386                                     "cmd: Enabled STA power save\n");
1387                         if (adapter->sleep_period.period)
1388                                 mwifiex_dbg(adapter, CMD,
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                         mwifiex_dbg(adapter, CMD,
1395                                     "cmd: Disabled auto deep sleep\n");
1396                 }
1397                 if (ps_bitmap & BITMAP_STA_PS) {
1398                         mwifiex_dbg(adapter, CMD,
1399                                     "cmd: Disabled STA power save\n");
1400                         if (adapter->sleep_period.period) {
1401                                 adapter->delay_null_pkt = false;
1402                                 adapter->tx_lock_flag = false;
1403                                 adapter->pps_uapsd_mode = false;
1404                         }
1405                 }
1406         } else if (action == GET_PS) {
1407                 if (ps_bitmap & BITMAP_STA_PS)
1408                         adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
1409                 else
1410                         adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
1411
1412                 mwifiex_dbg(adapter, CMD,
1413                             "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                                         mwifiex_dbg(adapter, INFO,
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                                         mwifiex_dbg(adapter, INFO,
1559                                                     "Firmware api version %d\n",
1560                                                     adapter->fw_api_ver);
1561                                         break;
1562                                 default:
1563                                         mwifiex_dbg(adapter, FATAL,
1564                                                     "Unknown api_id: %d\n",
1565                                                     api_id);
1566                                         break;
1567                                 }
1568                                 break;
1569                         default:
1570                                 mwifiex_dbg(adapter, FATAL,
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         mwifiex_dbg(adapter, INFO,
1583                     "info: GET_HW_SPEC: fw_release_number- %#x\n",
1584                     adapter->fw_release_number);
1585         mwifiex_dbg(adapter, INFO,
1586                     "info: GET_HW_SPEC: permanent addr: %pM\n",
1587                     hw_spec->permanent_addr);
1588         mwifiex_dbg(adapter, INFO,
1589                     "info: GET_HW_SPEC: hw_if_version=%#x version=%#x\n",
1590                     le16_to_cpu(hw_spec->hw_if_version),
1591                     le16_to_cpu(hw_spec->version));
1592
1593         ether_addr_copy(priv->adapter->perm_addr, hw_spec->permanent_addr);
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 (world) */
1602         if (i >= MWIFIEX_MAX_REGION_CODE) {
1603                 adapter->region_code = 0x00;
1604                 mwifiex_dbg(adapter, WARN,
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 }
1621
1622 /* This function handles the command response of hs wakeup reason
1623  * command.
1624  */
1625 int mwifiex_ret_wakeup_reason(struct mwifiex_private *priv,
1626                               struct host_cmd_ds_command *resp,
1627                               struct host_cmd_ds_wakeup_reason *wakeup_reason)
1628 {
1629         wakeup_reason->wakeup_reason =
1630                 resp->params.hs_wakeup_reason.wakeup_reason;
1631
1632         return 0;
1633 }