drivers/net/wireless/mwifiex/cmdevt.c

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