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, i;
 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;
 488         struct mwifiex_rxinfo *rx_info;
 489
 490         if ((adapter->event_cause & EVENT_ID_MASK) == EVENT_RADAR_DETECTED) {
 491                 for (i = 0; i < adapter->priv_num; i++) {
 492                         priv = adapter->priv[i];
 493                         if (priv && mwifiex_is_11h_active(priv)) {
 494                                 adapter->event_cause |=
 495                                         ((priv->bss_num & 0xff) << 16) |
 496                                         ((priv->bss_type & 0xff) << 24);
 497                                 break;
 498                         }
 499                 }
 500         }
 501
 502         eventcause = adapter->event_cause;
 503
 504         /* Save the last event to debug log */
 505         adapter->dbg.last_event_index =
 506                         (adapter->dbg.last_event_index + 1) % DBG_CMD_NUM;
 507         adapter->dbg.last_event[adapter->dbg.last_event_index] =
 508                                                         (u16) eventcause;
 509
 510         /* Get BSS number and corresponding priv */
 511         priv = mwifiex_get_priv_by_id(adapter, EVENT_GET_BSS_NUM(eventcause),
 512                                       EVENT_GET_BSS_TYPE(eventcause));
 513         if (!priv)
 514                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 515
 516         /* Clear BSS_NO_BITS from event */
 517         eventcause &= EVENT_ID_MASK;
 518         adapter->event_cause = eventcause;
 519
 520         if (skb) {
 521                 rx_info = MWIFIEX_SKB_RXCB(skb);
 522                 memset(rx_info, 0, sizeof(*rx_info));
 523                 rx_info->bss_num = priv->bss_num;
 524                 rx_info->bss_type = priv->bss_type;
 525                 mwifiex_dbg_dump(adapter, EVT_D, "Event Buf:",
 526                                  skb->data, skb->len);
 527         }
 528
 529         mwifiex_dbg(adapter, EVENT, "EVENT: cause: %#x\n", eventcause);
 530
 531         if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP)
 532                 ret = mwifiex_process_uap_event(priv);
 533         else
 534                 ret = mwifiex_process_sta_event(priv);
 535
 536         adapter->event_cause = 0;
 537         adapter->event_skb = NULL;
 538         adapter->if_ops.event_complete(adapter, skb);
 539
 540         return ret;
 541 }
 542
 543 /*
 544  * This function prepares a command and send it to the firmware.
 545  *
 546  * Preparation includes -
 547  *      - Sanity tests to make sure the card is still present or the FW
 548  *        is not reset
 549  *      - Getting a new command node from the command free queue
 550  *      - Initializing the command node for default parameters
 551  *      - Fill up the non-default parameters and buffer pointers
 552  *      - Add the command to pending queue
 553  */
 554 int mwifiex_send_cmd(struct mwifiex_private *priv, u16 cmd_no,
 555                      u16 cmd_action, u32 cmd_oid, void *data_buf, bool sync)
 556 {
 557         int ret;
 558         struct mwifiex_adapter *adapter = priv->adapter;
 559         struct cmd_ctrl_node *cmd_node;
 560         struct host_cmd_ds_command *cmd_ptr;
 561
 562         if (!adapter) {
 563                 pr_err("PREP_CMD: adapter is NULL\n");
 564                 return -1;
 565         }
 566
 567         if (adapter->is_suspended) {
 568                 mwifiex_dbg(adapter, ERROR,
 569                             "PREP_CMD: device in suspended state\n");
 570                 return -1;
 571         }
 572
 573         if (adapter->hs_enabling && cmd_no != HostCmd_CMD_802_11_HS_CFG_ENH) {
 574                 mwifiex_dbg(adapter, ERROR,
 575                             "PREP_CMD: host entering sleep state\n");
 576                 return -1;
 577         }
 578
 579         if (adapter->surprise_removed) {
 580                 mwifiex_dbg(adapter, ERROR,
 581                             "PREP_CMD: card is removed\n");
 582                 return -1;
 583         }
 584
 585         if (adapter->is_cmd_timedout) {
 586                 mwifiex_dbg(adapter, ERROR,
 587                             "PREP_CMD: FW is in bad state\n");
 588                 return -1;
 589         }
 590
 591         if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET) {
 592                 if (cmd_no != HostCmd_CMD_FUNC_INIT) {
 593                         mwifiex_dbg(adapter, ERROR,
 594                                     "PREP_CMD: FW in reset state\n");
 595                         return -1;
 596                 }
 597         }
 598         /* We don't expect commands in manufacturing mode. They are cooked
 599          * in application and ready to download buffer is passed to the driver
 600          */
 601         if (adapter->mfg_mode && cmd_no) {
 602                 dev_dbg(adapter->dev, "Ignoring commands in manufacturing mode\n");
 603                 return -1;
 604         }
 605
 606
 607         /* Get a new command node */
 608         cmd_node = mwifiex_get_cmd_node(adapter);
 609
 610         if (!cmd_node) {
 611                 mwifiex_dbg(adapter, ERROR,
 612                             "PREP_CMD: no free cmd node\n");
 613                 return -1;
 614         }
 615
 616         /* Initialize the command node */
 617         mwifiex_init_cmd_node(priv, cmd_node, cmd_oid, data_buf, sync);
 618
 619         if (!cmd_node->cmd_skb) {
 620                 mwifiex_dbg(adapter, ERROR,
 621                             "PREP_CMD: no free cmd buf\n");
 622                 return -1;
 623         }
 624
 625         memset(skb_put(cmd_node->cmd_skb, sizeof(struct host_cmd_ds_command)),
 626                0, sizeof(struct host_cmd_ds_command));
 627
 628         cmd_ptr = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 629         cmd_ptr->command = cpu_to_le16(cmd_no);
 630         cmd_ptr->result = 0;
 631
 632         /* Prepare command */
 633         if (cmd_no) {
 634                 switch (cmd_no) {
 635                 case HostCmd_CMD_UAP_SYS_CONFIG:
 636                 case HostCmd_CMD_UAP_BSS_START:
 637                 case HostCmd_CMD_UAP_BSS_STOP:
 638                 case HostCmd_CMD_UAP_STA_DEAUTH:
 639                 case HOST_CMD_APCMD_SYS_RESET:
 640                 case HOST_CMD_APCMD_STA_LIST:
 641                         ret = mwifiex_uap_prepare_cmd(priv, cmd_no, cmd_action,
 642                                                       cmd_oid, data_buf,
 643                                                       cmd_ptr);
 644                         break;
 645                 default:
 646                         ret = mwifiex_sta_prepare_cmd(priv, cmd_no, cmd_action,
 647                                                       cmd_oid, data_buf,
 648                                                       cmd_ptr);
 649                         break;
 650                 }
 651         } else {
 652                 ret = mwifiex_cmd_host_cmd(priv, cmd_ptr, data_buf);
 653                 cmd_node->cmd_flag |= CMD_F_HOSTCMD;
 654         }
 655
 656         /* Return error, since the command preparation failed */
 657         if (ret) {
 658                 mwifiex_dbg(adapter, ERROR,
 659                             "PREP_CMD: cmd %#x preparation failed\n",
 660                         cmd_no);
 661                 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
 662                 return -1;
 663         }
 664
 665         /* Send command */
 666         if (cmd_no == HostCmd_CMD_802_11_SCAN ||
 667             cmd_no == HostCmd_CMD_802_11_SCAN_EXT) {
 668                 mwifiex_queue_scan_cmd(priv, cmd_node);
 669         } else {
 670                 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true);
 671                 queue_work(adapter->workqueue, &adapter->main_work);
 672                 if (cmd_node->wait_q_enabled)
 673                         ret = mwifiex_wait_queue_complete(adapter, cmd_node);
 674         }
 675
 676         return ret;
 677 }
 678
 679 /*
 680  * This function queues a command to the command pending queue.
 681  *
 682  * This in effect adds the command to the command list to be executed.
 683  * Exit PS command is handled specially, by placing it always to the
 684  * front of the command queue.
 685  */
 686 void
 687 mwifiex_insert_cmd_to_pending_q(struct mwifiex_adapter *adapter,
 688                                 struct cmd_ctrl_node *cmd_node, u32 add_tail)
 689 {
 690         struct host_cmd_ds_command *host_cmd = NULL;
 691         u16 command;
 692         unsigned long flags;
 693
 694         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 695         if (!host_cmd) {
 696                 mwifiex_dbg(adapter, ERROR, "QUEUE_CMD: host_cmd is NULL\n");
 697                 return;
 698         }
 699
 700         command = le16_to_cpu(host_cmd->command);
 701
 702         /* Exit_PS command needs to be queued in the header always. */
 703         if (command == HostCmd_CMD_802_11_PS_MODE_ENH) {
 704                 struct host_cmd_ds_802_11_ps_mode_enh *pm =
 705                                                 &host_cmd->params.psmode_enh;
 706                 if ((le16_to_cpu(pm->action) == DIS_PS) ||
 707                     (le16_to_cpu(pm->action) == DIS_AUTO_PS)) {
 708                         if (adapter->ps_state != PS_STATE_AWAKE)
 709                                 add_tail = false;
 710                 }
 711         }
 712
 713         spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
 714         if (add_tail)
 715                 list_add_tail(&cmd_node->list, &adapter->cmd_pending_q);
 716         else
 717                 list_add(&cmd_node->list, &adapter->cmd_pending_q);
 718         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
 719
 720         atomic_inc(&adapter->cmd_pending);
 721         mwifiex_dbg(adapter, CMD,
 722                     "cmd: QUEUE_CMD: cmd=%#x, cmd_pending=%d\n",
 723                 command, atomic_read(&adapter->cmd_pending));
 724 }
 725
 726 /*
 727  * This function executes the next command in command pending queue.
 728  *
 729  * This function will fail if a command is already in processing stage,
 730  * otherwise it will dequeue the first command from the command pending
 731  * queue and send to the firmware.
 732  *
 733  * If the device is currently in host sleep mode, any commands, except the
 734  * host sleep configuration command will de-activate the host sleep. For PS
 735  * mode, the function will put the firmware back to sleep if applicable.
 736  */
 737 int mwifiex_exec_next_cmd(struct mwifiex_adapter *adapter)
 738 {
 739         struct mwifiex_private *priv;
 740         struct cmd_ctrl_node *cmd_node;
 741         int ret = 0;
 742         struct host_cmd_ds_command *host_cmd;
 743         unsigned long cmd_flags;
 744         unsigned long cmd_pending_q_flags;
 745
 746         /* Check if already in processing */
 747         if (adapter->curr_cmd) {
 748                 mwifiex_dbg(adapter, FATAL,
 749                             "EXEC_NEXT_CMD: cmd in processing\n");
 750                 return -1;
 751         }
 752
 753         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
 754         /* Check if any command is pending */
 755         spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
 756         if (list_empty(&adapter->cmd_pending_q)) {
 757                 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 758                                        cmd_pending_q_flags);
 759                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 760                 return 0;
 761         }
 762         cmd_node = list_first_entry(&adapter->cmd_pending_q,
 763                                     struct cmd_ctrl_node, list);
 764         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 765                                cmd_pending_q_flags);
 766
 767         host_cmd = (struct host_cmd_ds_command *) (cmd_node->cmd_skb->data);
 768         priv = cmd_node->priv;
 769
 770         if (adapter->ps_state != PS_STATE_AWAKE) {
 771                 mwifiex_dbg(adapter, ERROR,
 772                             "%s: cannot send cmd in sleep state,\t"
 773                             "this should not happen\n", __func__);
 774                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 775                 return ret;
 776         }
 777
 778         spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_pending_q_flags);
 779         list_del(&cmd_node->list);
 780         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock,
 781                                cmd_pending_q_flags);
 782
 783         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
 784         ret = mwifiex_dnld_cmd_to_fw(priv, cmd_node);
 785         priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 786         /* Any command sent to the firmware when host is in sleep
 787          * mode should de-configure host sleep. We should skip the
 788          * host sleep configuration command itself though
 789          */
 790         if (priv && (host_cmd->command !=
 791              cpu_to_le16(HostCmd_CMD_802_11_HS_CFG_ENH))) {
 792                 if (adapter->hs_activated) {
 793                         adapter->is_hs_configured = false;
 794                         mwifiex_hs_activated_event(priv, false);
 795                 }
 796         }
 797
 798         return ret;
 799 }
 800
 801 /*
 802  * This function handles the command response.
 803  *
 804  * After processing, the function cleans the command node and puts
 805  * it back to the command free queue.
 806  */
 807 int mwifiex_process_cmdresp(struct mwifiex_adapter *adapter)
 808 {
 809         struct host_cmd_ds_command *resp;
 810         struct mwifiex_private *priv =
 811                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 812         int ret = 0;
 813         uint16_t orig_cmdresp_no;
 814         uint16_t cmdresp_no;
 815         uint16_t cmdresp_result;
 816         unsigned long flags;
 817
 818         /* Now we got response from FW, cancel the command timer */
 819         del_timer_sync(&adapter->cmd_timer);
 820
 821         if (!adapter->curr_cmd || !adapter->curr_cmd->resp_skb) {
 822                 resp = (struct host_cmd_ds_command *) adapter->upld_buf;
 823                 mwifiex_dbg(adapter, ERROR,
 824                             "CMD_RESP: NULL curr_cmd, %#x\n",
 825                             le16_to_cpu(resp->command));
 826                 return -1;
 827         }
 828
 829         adapter->is_cmd_timedout = 0;
 830
 831         resp = (struct host_cmd_ds_command *) adapter->curr_cmd->resp_skb->data;
 832         if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
 833                 /* Copy original response back to response buffer */
 834                 struct mwifiex_ds_misc_cmd *hostcmd;
 835                 uint16_t size = le16_to_cpu(resp->size);
 836                 mwifiex_dbg(adapter, INFO,
 837                             "info: host cmd resp size = %d\n", size);
 838                 size = min_t(u16, size, MWIFIEX_SIZE_OF_CMD_BUFFER);
 839                 if (adapter->curr_cmd->data_buf) {
 840                         hostcmd = adapter->curr_cmd->data_buf;
 841                         hostcmd->len = size;
 842                         memcpy(hostcmd->cmd, resp, size);
 843                 }
 844         }
 845         orig_cmdresp_no = le16_to_cpu(resp->command);
 846
 847         /* Get BSS number and corresponding priv */
 848         priv = mwifiex_get_priv_by_id(adapter,
 849                              HostCmd_GET_BSS_NO(le16_to_cpu(resp->seq_num)),
 850                              HostCmd_GET_BSS_TYPE(le16_to_cpu(resp->seq_num)));
 851         if (!priv)
 852                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 853         /* Clear RET_BIT from HostCmd */
 854         resp->command = cpu_to_le16(orig_cmdresp_no & HostCmd_CMD_ID_MASK);
 855
 856         cmdresp_no = le16_to_cpu(resp->command);
 857         cmdresp_result = le16_to_cpu(resp->result);
 858
 859         /* Save the last command response to debug log */
 860         adapter->dbg.last_cmd_resp_index =
 861                         (adapter->dbg.last_cmd_resp_index + 1) % DBG_CMD_NUM;
 862         adapter->dbg.last_cmd_resp_id[adapter->dbg.last_cmd_resp_index] =
 863                                                                 orig_cmdresp_no;
 864
 865         mwifiex_dbg(adapter, CMD,
 866                     "cmd: CMD_RESP: 0x%x, result %d, len %d, seqno 0x%x\n",
 867                     orig_cmdresp_no, cmdresp_result,
 868                     le16_to_cpu(resp->size), le16_to_cpu(resp->seq_num));
 869         mwifiex_dbg_dump(adapter, CMD_D, "CMD_RESP buffer:", resp,
 870                          le16_to_cpu(resp->size));
 871
 872         if (!(orig_cmdresp_no & HostCmd_RET_BIT)) {
 873                 mwifiex_dbg(adapter, ERROR, "CMD_RESP: invalid cmd resp\n");
 874                 if (adapter->curr_cmd->wait_q_enabled)
 875                         adapter->cmd_wait_q.status = -1;
 876
 877                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 878                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 879                 adapter->curr_cmd = NULL;
 880                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 881                 return -1;
 882         }
 883
 884         if (adapter->curr_cmd->cmd_flag & CMD_F_HOSTCMD) {
 885                 adapter->curr_cmd->cmd_flag &= ~CMD_F_HOSTCMD;
 886                 if ((cmdresp_result == HostCmd_RESULT_OK) &&
 887                     (cmdresp_no == HostCmd_CMD_802_11_HS_CFG_ENH))
 888                         ret = mwifiex_ret_802_11_hs_cfg(priv, resp);
 889         } else {
 890                 /* handle response */
 891                 ret = mwifiex_process_sta_cmdresp(priv, cmdresp_no, resp);
 892         }
 893
 894         /* Check init command response */
 895         if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING) {
 896                 if (ret) {
 897                         mwifiex_dbg(adapter, ERROR,
 898                                     "%s: cmd %#x failed during\t"
 899                                     "initialization\n", __func__, cmdresp_no);
 900                         mwifiex_init_fw_complete(adapter);
 901                         return -1;
 902                 } else if (adapter->last_init_cmd == cmdresp_no)
 903                         adapter->hw_status = MWIFIEX_HW_STATUS_INIT_DONE;
 904         }
 905
 906         if (adapter->curr_cmd) {
 907                 if (adapter->curr_cmd->wait_q_enabled)
 908                         adapter->cmd_wait_q.status = ret;
 909
 910                 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
 911
 912                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
 913                 adapter->curr_cmd = NULL;
 914                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 915         }
 916
 917         return ret;
 918 }
 919
 920 /*
 921  * This function handles the timeout of command sending.
 922  *
 923  * It will re-send the same command again.
 924  */
 925 void
 926 mwifiex_cmd_timeout_func(unsigned long function_context)
 927 {
 928         struct mwifiex_adapter *adapter =
 929                 (struct mwifiex_adapter *) function_context;
 930         struct cmd_ctrl_node *cmd_node;
 931
 932         adapter->is_cmd_timedout = 1;
 933         if (!adapter->curr_cmd) {
 934                 mwifiex_dbg(adapter, ERROR,
 935                             "cmd: empty curr_cmd\n");
 936                 return;
 937         }
 938         cmd_node = adapter->curr_cmd;
 939         if (cmd_node) {
 940                 adapter->dbg.timeout_cmd_id =
 941                         adapter->dbg.last_cmd_id[adapter->dbg.last_cmd_index];
 942                 adapter->dbg.timeout_cmd_act =
 943                         adapter->dbg.last_cmd_act[adapter->dbg.last_cmd_index];
 944                 mwifiex_dbg(adapter, MSG,
 945                             "%s: Timeout cmd id = %#x, act = %#x\n", __func__,
 946                             adapter->dbg.timeout_cmd_id,
 947                             adapter->dbg.timeout_cmd_act);
 948
 949                 mwifiex_dbg(adapter, MSG,
 950                             "num_data_h2c_failure = %d\n",
 951                             adapter->dbg.num_tx_host_to_card_failure);
 952                 mwifiex_dbg(adapter, MSG,
 953                             "num_cmd_h2c_failure = %d\n",
 954                             adapter->dbg.num_cmd_host_to_card_failure);
 955
 956                 mwifiex_dbg(adapter, MSG,
 957                             "is_cmd_timedout = %d\n",
 958                             adapter->is_cmd_timedout);
 959                 mwifiex_dbg(adapter, MSG,
 960                             "num_tx_timeout = %d\n",
 961                             adapter->dbg.num_tx_timeout);
 962
 963                 mwifiex_dbg(adapter, MSG,
 964                             "last_cmd_index = %d\n",
 965                             adapter->dbg.last_cmd_index);
 966                 mwifiex_dbg(adapter, MSG,
 967                             "last_cmd_id: %*ph\n",
 968                             (int)sizeof(adapter->dbg.last_cmd_id),
 969                             adapter->dbg.last_cmd_id);
 970                 mwifiex_dbg(adapter, MSG,
 971                             "last_cmd_act: %*ph\n",
 972                             (int)sizeof(adapter->dbg.last_cmd_act),
 973                             adapter->dbg.last_cmd_act);
 974
 975                 mwifiex_dbg(adapter, MSG,
 976                             "last_cmd_resp_index = %d\n",
 977                             adapter->dbg.last_cmd_resp_index);
 978                 mwifiex_dbg(adapter, MSG,
 979                             "last_cmd_resp_id: %*ph\n",
 980                             (int)sizeof(adapter->dbg.last_cmd_resp_id),
 981                             adapter->dbg.last_cmd_resp_id);
 982
 983                 mwifiex_dbg(adapter, MSG,
 984                             "last_event_index = %d\n",
 985                             adapter->dbg.last_event_index);
 986                 mwifiex_dbg(adapter, MSG,
 987                             "last_event: %*ph\n",
 988                             (int)sizeof(adapter->dbg.last_event),
 989                             adapter->dbg.last_event);
 990
 991                 mwifiex_dbg(adapter, MSG,
 992                             "data_sent=%d cmd_sent=%d\n",
 993                             adapter->data_sent, adapter->cmd_sent);
 994
 995                 mwifiex_dbg(adapter, MSG,
 996                             "ps_mode=%d ps_state=%d\n",
 997                             adapter->ps_mode, adapter->ps_state);
 998
 999                 if (cmd_node->wait_q_enabled) {
1000                         adapter->cmd_wait_q.status = -ETIMEDOUT;
1001                         mwifiex_cancel_pending_ioctl(adapter);
1002                 }
1003         }
1004         if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING) {
1005                 mwifiex_init_fw_complete(adapter);
1006                 return;
1007         }
1008
1009         if (adapter->if_ops.device_dump)
1010                 adapter->if_ops.device_dump(adapter);
1011
1012         if (adapter->if_ops.card_reset)
1013                 adapter->if_ops.card_reset(adapter);
1014 }
1015
1016 void
1017 mwifiex_cancel_pending_scan_cmd(struct mwifiex_adapter *adapter)
1018 {
1019         struct cmd_ctrl_node *cmd_node = NULL, *tmp_node;
1020         unsigned long flags;
1021
1022         /* Cancel all pending scan command */
1023         spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
1024         list_for_each_entry_safe(cmd_node, tmp_node,
1025                                  &adapter->scan_pending_q, list) {
1026                 list_del(&cmd_node->list);
1027                 cmd_node->wait_q_enabled = false;
1028                 mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
1029         }
1030         spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
1031 }
1032
1033 /*
1034  * This function cancels all the pending commands.
1035  *
1036  * The current command, all commands in command pending queue and all scan
1037  * commands in scan pending queue are cancelled. All the completion callbacks
1038  * are called with failure status to ensure cleanup.
1039  */
1040 void
1041 mwifiex_cancel_all_pending_cmd(struct mwifiex_adapter *adapter)
1042 {
1043         struct cmd_ctrl_node *cmd_node = NULL, *tmp_node;
1044         unsigned long flags, cmd_flags;
1045
1046         spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
1047         /* Cancel current cmd */
1048         if ((adapter->curr_cmd) && (adapter->curr_cmd->wait_q_enabled)) {
1049                 adapter->cmd_wait_q.status = -1;
1050                 mwifiex_complete_cmd(adapter, adapter->curr_cmd);
1051                 adapter->curr_cmd->wait_q_enabled = false;
1052                 /* no recycle probably wait for response */
1053         }
1054         /* Cancel all pending command */
1055         spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1056         list_for_each_entry_safe(cmd_node, tmp_node,
1057                                  &adapter->cmd_pending_q, list) {
1058                 list_del(&cmd_node->list);
1059                 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1060
1061                 if (cmd_node->wait_q_enabled)
1062                         adapter->cmd_wait_q.status = -1;
1063                 mwifiex_recycle_cmd_node(adapter, cmd_node);
1064                 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
1065         }
1066         spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
1067         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1068
1069         mwifiex_cancel_scan(adapter);
1070 }
1071
1072 /*
1073  * This function cancels all pending commands that matches with
1074  * the given IOCTL request.
1075  *
1076  * Both the current command buffer and the pending command queue are
1077  * searched for matching IOCTL request. The completion callback of
1078  * the matched command is called with failure status to ensure cleanup.
1079  * In case of scan commands, all pending commands in scan pending queue
1080  * are cancelled.
1081  */
1082 void
1083 mwifiex_cancel_pending_ioctl(struct mwifiex_adapter *adapter)
1084 {
1085         struct cmd_ctrl_node *cmd_node = NULL;
1086         unsigned long cmd_flags;
1087
1088         if ((adapter->curr_cmd) &&
1089             (adapter->curr_cmd->wait_q_enabled)) {
1090                 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
1091                 cmd_node = adapter->curr_cmd;
1092                 /* setting curr_cmd to NULL is quite dangerous, because
1093                  * mwifiex_process_cmdresp checks curr_cmd to be != NULL
1094                  * at the beginning then relies on it and dereferences
1095                  * it at will
1096                  * this probably works since mwifiex_cmd_timeout_func
1097                  * is the only caller of this function and responses
1098                  * at that point
1099                  */
1100                 adapter->curr_cmd = NULL;
1101                 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
1102
1103                 mwifiex_recycle_cmd_node(adapter, cmd_node);
1104         }
1105
1106         mwifiex_cancel_scan(adapter);
1107 }
1108
1109 /*
1110  * This function sends the sleep confirm command to firmware, if
1111  * possible.
1112  *
1113  * The sleep confirm command cannot be issued if command response,
1114  * data response or event response is awaiting handling, or if we
1115  * are in the middle of sending a command, or expecting a command
1116  * response.
1117  */
1118 void
1119 mwifiex_check_ps_cond(struct mwifiex_adapter *adapter)
1120 {
1121         if (!adapter->cmd_sent &&
1122             !adapter->curr_cmd && !IS_CARD_RX_RCVD(adapter))
1123                 mwifiex_dnld_sleep_confirm_cmd(adapter);
1124         else
1125                 mwifiex_dbg(adapter, CMD,
1126                             "cmd: Delay Sleep Confirm (%s%s%s)\n",
1127                             (adapter->cmd_sent) ? "D" : "",
1128                             (adapter->curr_cmd) ? "C" : "",
1129                             (IS_CARD_RX_RCVD(adapter)) ? "R" : "");
1130 }
1131
1132 /*
1133  * This function sends a Host Sleep activated event to applications.
1134  *
1135  * This event is generated by the driver, with a blank event body.
1136  */
1137 void
1138 mwifiex_hs_activated_event(struct mwifiex_private *priv, u8 activated)
1139 {
1140         if (activated) {
1141                 if (priv->adapter->is_hs_configured) {
1142                         priv->adapter->hs_activated = true;
1143                         mwifiex_update_rxreor_flags(priv->adapter,
1144                                                     RXREOR_FORCE_NO_DROP);
1145                         mwifiex_dbg(priv->adapter, EVENT,
1146                                     "event: hs_activated\n");
1147                         priv->adapter->hs_activate_wait_q_woken = true;
1148                         wake_up_interruptible(
1149                                 &priv->adapter->hs_activate_wait_q);
1150                 } else {
1151                         mwifiex_dbg(priv->adapter, EVENT,
1152                                     "event: HS not configured\n");
1153                 }
1154         } else {
1155                 mwifiex_dbg(priv->adapter, EVENT,
1156                             "event: hs_deactivated\n");
1157                 priv->adapter->hs_activated = false;
1158         }
1159 }
1160
1161 /*
1162  * This function handles the command response of a Host Sleep configuration
1163  * command.
1164  *
1165  * Handling includes changing the header fields into CPU format
1166  * and setting the current host sleep activation status in driver.
1167  *
1168  * In case host sleep status change, the function generates an event to
1169  * notify the applications.
1170  */
1171 int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv,
1172                               struct host_cmd_ds_command *resp)
1173 {
1174         struct mwifiex_adapter *adapter = priv->adapter;
1175         struct host_cmd_ds_802_11_hs_cfg_enh *phs_cfg =
1176                 &resp->params.opt_hs_cfg;
1177         uint32_t conditions = le32_to_cpu(phs_cfg->params.hs_config.conditions);
1178
1179         if (phs_cfg->action == cpu_to_le16(HS_ACTIVATE) &&
1180             adapter->iface_type != MWIFIEX_USB) {
1181                 mwifiex_hs_activated_event(priv, true);
1182                 return 0;
1183         } else {
1184                 mwifiex_dbg(adapter, CMD,
1185                             "cmd: CMD_RESP: HS_CFG cmd reply\t"
1186                             " result=%#x, conditions=0x%x gpio=0x%x gap=0x%x\n",
1187                             resp->result, conditions,
1188                             phs_cfg->params.hs_config.gpio,
1189                             phs_cfg->params.hs_config.gap);
1190         }
1191         if (conditions != HS_CFG_CANCEL) {
1192                 adapter->is_hs_configured = true;
1193                 if (adapter->iface_type == MWIFIEX_USB)
1194                         mwifiex_hs_activated_event(priv, true);
1195         } else {
1196                 adapter->is_hs_configured = false;
1197                 if (adapter->hs_activated)
1198                         mwifiex_hs_activated_event(priv, false);
1199         }
1200
1201         return 0;
1202 }
1203
1204 /*
1205  * This function wakes up the adapter and generates a Host Sleep
1206  * cancel event on receiving the power up interrupt.
1207  */
1208 void
1209 mwifiex_process_hs_config(struct mwifiex_adapter *adapter)
1210 {
1211         mwifiex_dbg(adapter, INFO,
1212                     "info: %s: auto cancelling host sleep\t"
1213                     "since there is interrupt from the firmware\n",
1214                     __func__);
1215
1216         adapter->if_ops.wakeup(adapter);
1217         adapter->hs_activated = false;
1218         adapter->is_hs_configured = false;
1219         adapter->is_suspended = false;
1220         mwifiex_hs_activated_event(mwifiex_get_priv(adapter,
1221                                                     MWIFIEX_BSS_ROLE_ANY),
1222                                    false);
1223 }
1224 EXPORT_SYMBOL_GPL(mwifiex_process_hs_config);
1225
1226 /*
1227  * This function handles the command response of a sleep confirm command.
1228  *
1229  * The function sets the card state to SLEEP if the response indicates success.
1230  */
1231 void
1232 mwifiex_process_sleep_confirm_resp(struct mwifiex_adapter *adapter,
1233                                    u8 *pbuf, u32 upld_len)
1234 {
1235         struct host_cmd_ds_command *cmd = (struct host_cmd_ds_command *) pbuf;
1236         struct mwifiex_private *priv =
1237                 mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1238         uint16_t result = le16_to_cpu(cmd->result);
1239         uint16_t command = le16_to_cpu(cmd->command);
1240         uint16_t seq_num = le16_to_cpu(cmd->seq_num);
1241
1242         if (!upld_len) {
1243                 mwifiex_dbg(adapter, ERROR,
1244                             "%s: cmd size is 0\n", __func__);
1245                 return;
1246         }
1247
1248         mwifiex_dbg(adapter, CMD,
1249                     "cmd: CMD_RESP: 0x%x, result %d, len %d, seqno 0x%x\n",
1250                     command, result, le16_to_cpu(cmd->size), seq_num);
1251
1252         /* Get BSS number and corresponding priv */
1253         priv = mwifiex_get_priv_by_id(adapter, HostCmd_GET_BSS_NO(seq_num),
1254                                       HostCmd_GET_BSS_TYPE(seq_num));
1255         if (!priv)
1256                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
1257
1258         /* Update sequence number */
1259         seq_num = HostCmd_GET_SEQ_NO(seq_num);
1260         /* Clear RET_BIT from HostCmd */
1261         command &= HostCmd_CMD_ID_MASK;
1262
1263         if (command != HostCmd_CMD_802_11_PS_MODE_ENH) {
1264                 mwifiex_dbg(adapter, ERROR,
1265                             "%s: rcvd unexpected resp for cmd %#x, result = %x\n",
1266                             __func__, command, result);
1267                 return;
1268         }
1269
1270         if (result) {
1271                 mwifiex_dbg(adapter, ERROR,
1272                             "%s: sleep confirm cmd failed\n",
1273                             __func__);
1274                 adapter->pm_wakeup_card_req = false;
1275                 adapter->ps_state = PS_STATE_AWAKE;
1276                 return;
1277         }
1278         adapter->pm_wakeup_card_req = true;
1279         if (adapter->is_hs_configured)
1280                 mwifiex_hs_activated_event(mwifiex_get_priv
1281                                                 (adapter, MWIFIEX_BSS_ROLE_ANY),
1282                                            true);
1283         adapter->ps_state = PS_STATE_SLEEP;
1284         cmd->command = cpu_to_le16(command);
1285         cmd->seq_num = cpu_to_le16(seq_num);
1286 }
1287 EXPORT_SYMBOL_GPL(mwifiex_process_sleep_confirm_resp);
1288
1289 /*
1290  * This function prepares an enhanced power mode command.
1291  *
1292  * This function can be used to disable power save or to configure
1293  * power save with auto PS or STA PS or auto deep sleep.
1294  *
1295  * Preparation includes -
1296  *      - Setting command ID, action and proper size
1297  *      - Setting Power Save bitmap, PS parameters TLV, PS mode TLV,
1298  *        auto deep sleep TLV (as required)
1299  *      - Ensuring correct endian-ness
1300  */
1301 int mwifiex_cmd_enh_power_mode(struct mwifiex_private *priv,
1302                                struct host_cmd_ds_command *cmd,
1303                                u16 cmd_action, uint16_t ps_bitmap,
1304                                struct mwifiex_ds_auto_ds *auto_ds)
1305 {
1306         struct host_cmd_ds_802_11_ps_mode_enh *psmode_enh =
1307                 &cmd->params.psmode_enh;
1308         u8 *tlv;
1309         u16 cmd_size = 0;
1310
1311         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
1312         if (cmd_action == DIS_AUTO_PS) {
1313                 psmode_enh->action = cpu_to_le16(DIS_AUTO_PS);
1314                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1315                 cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
1316                                         sizeof(psmode_enh->params.ps_bitmap));
1317         } else if (cmd_action == GET_PS) {
1318                 psmode_enh->action = cpu_to_le16(GET_PS);
1319                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1320                 cmd->size = cpu_to_le16(S_DS_GEN + sizeof(psmode_enh->action) +
1321                                         sizeof(psmode_enh->params.ps_bitmap));
1322         } else if (cmd_action == EN_AUTO_PS) {
1323                 psmode_enh->action = cpu_to_le16(EN_AUTO_PS);
1324                 psmode_enh->params.ps_bitmap = cpu_to_le16(ps_bitmap);
1325                 cmd_size = S_DS_GEN + sizeof(psmode_enh->action) +
1326                                         sizeof(psmode_enh->params.ps_bitmap);
1327                 tlv = (u8 *) cmd + cmd_size;
1328                 if (ps_bitmap & BITMAP_STA_PS) {
1329                         struct mwifiex_adapter *adapter = priv->adapter;
1330                         struct mwifiex_ie_types_ps_param *ps_tlv =
1331                                 (struct mwifiex_ie_types_ps_param *) tlv;
1332                         struct mwifiex_ps_param *ps_mode = &ps_tlv->param;
1333                         ps_tlv->header.type = cpu_to_le16(TLV_TYPE_PS_PARAM);
1334                         ps_tlv->header.len = cpu_to_le16(sizeof(*ps_tlv) -
1335                                         sizeof(struct mwifiex_ie_types_header));
1336                         cmd_size += sizeof(*ps_tlv);
1337                         tlv += sizeof(*ps_tlv);
1338                         mwifiex_dbg(priv->adapter, CMD,
1339                                     "cmd: PS Command: Enter PS\n");
1340                         ps_mode->null_pkt_interval =
1341                                         cpu_to_le16(adapter->null_pkt_interval);
1342                         ps_mode->multiple_dtims =
1343                                         cpu_to_le16(adapter->multiple_dtim);
1344                         ps_mode->bcn_miss_timeout =
1345                                         cpu_to_le16(adapter->bcn_miss_time_out);
1346                         ps_mode->local_listen_interval =
1347                                 cpu_to_le16(adapter->local_listen_interval);
1348                         ps_mode->adhoc_wake_period =
1349                                 cpu_to_le16(adapter->adhoc_awake_period);
1350                         ps_mode->delay_to_ps =
1351                                         cpu_to_le16(adapter->delay_to_ps);
1352                         ps_mode->mode = cpu_to_le16(adapter->enhanced_ps_mode);
1353
1354                 }
1355                 if (ps_bitmap & BITMAP_AUTO_DS) {
1356                         struct mwifiex_ie_types_auto_ds_param *auto_ds_tlv =
1357                                 (struct mwifiex_ie_types_auto_ds_param *) tlv;
1358                         u16 idletime = 0;
1359
1360                         auto_ds_tlv->header.type =
1361                                 cpu_to_le16(TLV_TYPE_AUTO_DS_PARAM);
1362                         auto_ds_tlv->header.len =
1363                                 cpu_to_le16(sizeof(*auto_ds_tlv) -
1364                                         sizeof(struct mwifiex_ie_types_header));
1365                         cmd_size += sizeof(*auto_ds_tlv);
1366                         tlv += sizeof(*auto_ds_tlv);
1367                         if (auto_ds)
1368                                 idletime = auto_ds->idle_time;
1369                         mwifiex_dbg(priv->adapter, CMD,
1370                                     "cmd: PS Command: Enter Auto Deep Sleep\n");
1371                         auto_ds_tlv->deep_sleep_timeout = cpu_to_le16(idletime);
1372                 }
1373                 cmd->size = cpu_to_le16(cmd_size);
1374         }
1375         return 0;
1376 }
1377
1378 /*
1379  * This function handles the command response of an enhanced power mode
1380  * command.
1381  *
1382  * Handling includes changing the header fields into CPU format
1383  * and setting the current enhanced power mode in driver.
1384  */
1385 int mwifiex_ret_enh_power_mode(struct mwifiex_private *priv,
1386                                struct host_cmd_ds_command *resp,
1387                                struct mwifiex_ds_pm_cfg *pm_cfg)
1388 {
1389         struct mwifiex_adapter *adapter = priv->adapter;
1390         struct host_cmd_ds_802_11_ps_mode_enh *ps_mode =
1391                 &resp->params.psmode_enh;
1392         uint16_t action = le16_to_cpu(ps_mode->action);
1393         uint16_t ps_bitmap = le16_to_cpu(ps_mode->params.ps_bitmap);
1394         uint16_t auto_ps_bitmap =
1395                 le16_to_cpu(ps_mode->params.ps_bitmap);
1396
1397         mwifiex_dbg(adapter, INFO,
1398                     "info: %s: PS_MODE cmd reply result=%#x action=%#X\n",
1399                     __func__, resp->result, action);
1400         if (action == EN_AUTO_PS) {
1401                 if (auto_ps_bitmap & BITMAP_AUTO_DS) {
1402                         mwifiex_dbg(adapter, CMD,
1403                                     "cmd: Enabled auto deep sleep\n");
1404                         priv->adapter->is_deep_sleep = true;
1405                 }
1406                 if (auto_ps_bitmap & BITMAP_STA_PS) {
1407                         mwifiex_dbg(adapter, CMD,
1408                                     "cmd: Enabled STA power save\n");
1409                         if (adapter->sleep_period.period)
1410                                 mwifiex_dbg(adapter, CMD,
1411                                             "cmd: set to uapsd/pps mode\n");
1412                 }
1413         } else if (action == DIS_AUTO_PS) {
1414                 if (ps_bitmap & BITMAP_AUTO_DS) {
1415                         priv->adapter->is_deep_sleep = false;
1416                         mwifiex_dbg(adapter, CMD,
1417                                     "cmd: Disabled auto deep sleep\n");
1418                 }
1419                 if (ps_bitmap & BITMAP_STA_PS) {
1420                         mwifiex_dbg(adapter, CMD,
1421                                     "cmd: Disabled STA power save\n");
1422                         if (adapter->sleep_period.period) {
1423                                 adapter->delay_null_pkt = false;
1424                                 adapter->tx_lock_flag = false;
1425                                 adapter->pps_uapsd_mode = false;
1426                         }
1427                 }
1428         } else if (action == GET_PS) {
1429                 if (ps_bitmap & BITMAP_STA_PS)
1430                         adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
1431                 else
1432                         adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
1433
1434                 mwifiex_dbg(adapter, CMD,
1435                             "cmd: ps_bitmap=%#x\n", ps_bitmap);
1436
1437                 if (pm_cfg) {
1438                         /* This section is for get power save mode */
1439                         if (ps_bitmap & BITMAP_STA_PS)
1440                                 pm_cfg->param.ps_mode = 1;
1441                         else
1442                                 pm_cfg->param.ps_mode = 0;
1443                 }
1444         }
1445         return 0;
1446 }
1447
1448 /*
1449  * This function prepares command to get hardware specifications.
1450  *
1451  * Preparation includes -
1452  *      - Setting command ID, action and proper size
1453  *      - Setting permanent address parameter
1454  *      - Ensuring correct endian-ness
1455  */
1456 int mwifiex_cmd_get_hw_spec(struct mwifiex_private *priv,
1457                             struct host_cmd_ds_command *cmd)
1458 {
1459         struct host_cmd_ds_get_hw_spec *hw_spec = &cmd->params.hw_spec;
1460
1461         cmd->command = cpu_to_le16(HostCmd_CMD_GET_HW_SPEC);
1462         cmd->size =
1463                 cpu_to_le16(sizeof(struct host_cmd_ds_get_hw_spec) + S_DS_GEN);
1464         memcpy(hw_spec->permanent_addr, priv->curr_addr, ETH_ALEN);
1465
1466         return 0;
1467 }
1468
1469 /*
1470  * This function handles the command response of get hardware
1471  * specifications.
1472  *
1473  * Handling includes changing the header fields into CPU format
1474  * and saving/updating the following parameters in driver -
1475  *      - Firmware capability information
1476  *      - Firmware band settings
1477  *      - Ad-hoc start band and channel
1478  *      - Ad-hoc 11n activation status
1479  *      - Firmware release number
1480  *      - Number of antennas
1481  *      - Hardware address
1482  *      - Hardware interface version
1483  *      - Firmware version
1484  *      - Region code
1485  *      - 11n capabilities
1486  *      - MCS support fields
1487  *      - MP end port
1488  */
1489 int mwifiex_ret_get_hw_spec(struct mwifiex_private *priv,
1490                             struct host_cmd_ds_command *resp)
1491 {
1492         struct host_cmd_ds_get_hw_spec *hw_spec = &resp->params.hw_spec;
1493         struct mwifiex_adapter *adapter = priv->adapter;
1494         struct mwifiex_ie_types_header *tlv;
1495         struct hw_spec_api_rev *api_rev;
1496         u16 resp_size, api_id;
1497         int i, left_len, parsed_len = 0;
1498
1499         adapter->fw_cap_info = le32_to_cpu(hw_spec->fw_cap_info);
1500
1501         if (IS_SUPPORT_MULTI_BANDS(adapter))
1502                 adapter->fw_bands = (u8) GET_FW_DEFAULT_BANDS(adapter);
1503         else
1504                 adapter->fw_bands = BAND_B;
1505
1506         adapter->config_bands = adapter->fw_bands;
1507
1508         if (adapter->fw_bands & BAND_A) {
1509                 if (adapter->fw_bands & BAND_GN) {
1510                         adapter->config_bands |= BAND_AN;
1511                         adapter->fw_bands |= BAND_AN;
1512                 }
1513                 if (adapter->fw_bands & BAND_AN) {
1514                         adapter->adhoc_start_band = BAND_A | BAND_AN;
1515                         adapter->adhoc_11n_enabled = true;
1516                 } else {
1517                         adapter->adhoc_start_band = BAND_A;
1518                 }
1519                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL_A;
1520         } else if (adapter->fw_bands & BAND_GN) {
1521                 adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
1522                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
1523                 adapter->adhoc_11n_enabled = true;
1524         } else if (adapter->fw_bands & BAND_G) {
1525                 adapter->adhoc_start_band = BAND_G | BAND_B;
1526                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
1527         } else if (adapter->fw_bands & BAND_B) {
1528                 adapter->adhoc_start_band = BAND_B;
1529                 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
1530         }
1531
1532         adapter->fw_release_number = le32_to_cpu(hw_spec->fw_release_number);
1533         adapter->fw_api_ver = (adapter->fw_release_number >> 16) & 0xff;
1534         adapter->number_of_antenna = le16_to_cpu(hw_spec->number_of_antenna);
1535
1536         if (le32_to_cpu(hw_spec->dot_11ac_dev_cap)) {
1537                 adapter->is_hw_11ac_capable = true;
1538
1539                 /* Copy 11AC cap */
1540                 adapter->hw_dot_11ac_dev_cap =
1541                                         le32_to_cpu(hw_spec->dot_11ac_dev_cap);
1542                 adapter->usr_dot_11ac_dev_cap_bg = adapter->hw_dot_11ac_dev_cap
1543                                         & ~MWIFIEX_DEF_11AC_CAP_BF_RESET_MASK;
1544                 adapter->usr_dot_11ac_dev_cap_a = adapter->hw_dot_11ac_dev_cap
1545                                         & ~MWIFIEX_DEF_11AC_CAP_BF_RESET_MASK;
1546
1547                 /* Copy 11AC mcs */
1548                 adapter->hw_dot_11ac_mcs_support =
1549                                 le32_to_cpu(hw_spec->dot_11ac_mcs_support);
1550                 adapter->usr_dot_11ac_mcs_support =
1551                                         adapter->hw_dot_11ac_mcs_support;
1552         } else {
1553                 adapter->is_hw_11ac_capable = false;
1554         }
1555
1556         resp_size = le16_to_cpu(resp->size) - S_DS_GEN;
1557         if (resp_size > sizeof(struct host_cmd_ds_get_hw_spec)) {
1558                 /* we have variable HW SPEC information */
1559                 left_len = resp_size - sizeof(struct host_cmd_ds_get_hw_spec);
1560                 while (left_len > sizeof(struct mwifiex_ie_types_header)) {
1561                         tlv = (void *)&hw_spec->tlvs + parsed_len;
1562                         switch (le16_to_cpu(tlv->type)) {
1563                         case TLV_TYPE_API_REV:
1564                                 api_rev = (struct hw_spec_api_rev *)tlv;
1565                                 api_id = le16_to_cpu(api_rev->api_id);
1566                                 switch (api_id) {
1567                                 case KEY_API_VER_ID:
1568                                         adapter->key_api_major_ver =
1569                                                         api_rev->major_ver;
1570                                         adapter->key_api_minor_ver =
1571                                                         api_rev->minor_ver;
1572                                         mwifiex_dbg(adapter, INFO,
1573                                                     "key_api v%d.%d\n",
1574                                                     adapter->key_api_major_ver,
1575                                                     adapter->key_api_minor_ver);
1576                                         break;
1577                                 case FW_API_VER_ID:
1578                                         adapter->fw_api_ver =
1579                                                         api_rev->major_ver;
1580                                         mwifiex_dbg(adapter, INFO,
1581                                                     "Firmware api version %d\n",
1582                                                     adapter->fw_api_ver);
1583                                         break;
1584                                 default:
1585                                         mwifiex_dbg(adapter, FATAL,
1586                                                     "Unknown api_id: %d\n",
1587                                                     api_id);
1588                                         break;
1589                                 }
1590                                 break;
1591                         default:
1592                                 mwifiex_dbg(adapter, FATAL,
1593                                             "Unknown GET_HW_SPEC TLV type: %#x\n",
1594                                             le16_to_cpu(tlv->type));
1595                                 break;
1596                         }
1597                         parsed_len += le16_to_cpu(tlv->len) +
1598                                       sizeof(struct mwifiex_ie_types_header);
1599                         left_len -= le16_to_cpu(tlv->len) +
1600                                       sizeof(struct mwifiex_ie_types_header);
1601                 }
1602         }
1603
1604         mwifiex_dbg(adapter, INFO,
1605                     "info: GET_HW_SPEC: fw_release_number- %#x\n",
1606                     adapter->fw_release_number);
1607         mwifiex_dbg(adapter, INFO,
1608                     "info: GET_HW_SPEC: permanent addr: %pM\n",
1609                     hw_spec->permanent_addr);
1610         mwifiex_dbg(adapter, INFO,
1611                     "info: GET_HW_SPEC: hw_if_version=%#x version=%#x\n",
1612                     le16_to_cpu(hw_spec->hw_if_version),
1613                     le16_to_cpu(hw_spec->version));
1614
1615         ether_addr_copy(priv->adapter->perm_addr, hw_spec->permanent_addr);
1616         adapter->region_code = le16_to_cpu(hw_spec->region_code);
1617
1618         for (i = 0; i < MWIFIEX_MAX_REGION_CODE; i++)
1619                 /* Use the region code to search for the index */
1620                 if (adapter->region_code == region_code_index[i])
1621                         break;
1622
1623         /* If it's unidentified region code, use the default (world) */
1624         if (i >= MWIFIEX_MAX_REGION_CODE) {
1625                 adapter->region_code = 0x00;
1626                 mwifiex_dbg(adapter, WARN,
1627                             "cmd: unknown region code, use default (USA)\n");
1628         }
1629
1630         adapter->hw_dot_11n_dev_cap = le32_to_cpu(hw_spec->dot_11n_dev_cap);
1631         adapter->hw_dev_mcs_support = hw_spec->dev_mcs_support;
1632         adapter->user_dev_mcs_support = adapter->hw_dev_mcs_support;
1633
1634         if (adapter->if_ops.update_mp_end_port)
1635                 adapter->if_ops.update_mp_end_port(adapter,
1636                                         le16_to_cpu(hw_spec->mp_end_port));
1637
1638         if (adapter->fw_api_ver == MWIFIEX_FW_V15)
1639                 adapter->scan_chan_gap_enabled = true;
1640
1641         return 0;
1642 }
1643
1644 /* This function handles the command response of hs wakeup reason
1645  * command.
1646  */
1647 int mwifiex_ret_wakeup_reason(struct mwifiex_private *priv,
1648                               struct host_cmd_ds_command *resp,
1649                               struct host_cmd_ds_wakeup_reason *wakeup_reason)
1650 {
1651         wakeup_reason->wakeup_reason =
1652                 resp->params.hs_wakeup_reason.wakeup_reason;
1653
1654         return 0;
1655 }