1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * NXP Wireless LAN device driver: major functions 4 * 5 * Copyright 2011-2020 NXP 6 */ 7 8 #include <linux/suspend.h> 9 10 #include "main.h" 11 #include "wmm.h" 12 #include "cfg80211.h" 13 #include "11n.h" 14 15 #define VERSION "1.0" 16 #define MFG_FIRMWARE "mwifiex_mfg.bin" 17 18 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK; 19 module_param(debug_mask, uint, 0); 20 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags"); 21 22 const char driver_version[] = "mwifiex " VERSION " (%s) "; 23 static char *cal_data_cfg; 24 module_param(cal_data_cfg, charp, 0); 25 26 static unsigned short driver_mode; 27 module_param(driver_mode, ushort, 0); 28 MODULE_PARM_DESC(driver_mode, 29 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7"); 30 31 bool mfg_mode; 32 module_param(mfg_mode, bool, 0); 33 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0"); 34 35 bool aggr_ctrl; 36 module_param(aggr_ctrl, bool, 0000); 37 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0"); 38 39 const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 }; 40 41 /* 42 * This function registers the device and performs all the necessary 43 * initializations. 44 * 45 * The following initialization operations are performed - 46 * - Allocate adapter structure 47 * - Save interface specific operations table in adapter 48 * - Call interface specific initialization routine 49 * - Allocate private structures 50 * - Set default adapter structure parameters 51 * - Initialize locks 52 * 53 * In case of any errors during inittialization, this function also ensures 54 * proper cleanup before exiting. 55 */ 56 static int mwifiex_register(void *card, struct device *dev, 57 const struct mwifiex_if_ops *if_ops, void **padapter) 58 { 59 struct mwifiex_adapter *adapter; 60 int i; 61 62 adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL); 63 if (!adapter) 64 return -ENOMEM; 65 66 *padapter = adapter; 67 adapter->dev = dev; 68 adapter->card = card; 69 70 /* Save interface specific operations in adapter */ 71 memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops)); 72 adapter->debug_mask = debug_mask; 73 74 /* card specific initialization has been deferred until now .. */ 75 if (adapter->if_ops.init_if) 76 if (adapter->if_ops.init_if(adapter)) 77 goto error; 78 79 adapter->priv_num = 0; 80 81 for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) { 82 /* Allocate memory for private structure */ 83 adapter->priv[i] = 84 kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL); 85 if (!adapter->priv[i]) 86 goto error; 87 88 adapter->priv[i]->adapter = adapter; 89 adapter->priv_num++; 90 } 91 mwifiex_init_lock_list(adapter); 92 93 timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0); 94 95 return 0; 96 97 error: 98 mwifiex_dbg(adapter, ERROR, 99 "info: leave mwifiex_register with error\n"); 100 101 for (i = 0; i < adapter->priv_num; i++) 102 kfree(adapter->priv[i]); 103 104 kfree(adapter); 105 106 return -1; 107 } 108 109 /* 110 * This function unregisters the device and performs all the necessary 111 * cleanups. 112 * 113 * The following cleanup operations are performed - 114 * - Free the timers 115 * - Free beacon buffers 116 * - Free private structures 117 * - Free adapter structure 118 */ 119 static int mwifiex_unregister(struct mwifiex_adapter *adapter) 120 { 121 s32 i; 122 123 if (adapter->if_ops.cleanup_if) 124 adapter->if_ops.cleanup_if(adapter); 125 126 timer_shutdown_sync(&adapter->cmd_timer); 127 128 /* Free private structures */ 129 for (i = 0; i < adapter->priv_num; i++) { 130 mwifiex_free_curr_bcn(adapter->priv[i]); 131 kfree(adapter->priv[i]); 132 } 133 134 if (adapter->nd_info) { 135 for (i = 0 ; i < adapter->nd_info->n_matches ; i++) 136 kfree(adapter->nd_info->matches[i]); 137 kfree(adapter->nd_info); 138 adapter->nd_info = NULL; 139 } 140 141 kfree(adapter->regd); 142 143 kfree(adapter); 144 return 0; 145 } 146 147 void mwifiex_queue_main_work(struct mwifiex_adapter *adapter) 148 { 149 unsigned long flags; 150 151 spin_lock_irqsave(&adapter->main_proc_lock, flags); 152 if (adapter->mwifiex_processing) { 153 adapter->more_task_flag = true; 154 spin_unlock_irqrestore(&adapter->main_proc_lock, flags); 155 } else { 156 spin_unlock_irqrestore(&adapter->main_proc_lock, flags); 157 queue_work(adapter->workqueue, &adapter->main_work); 158 } 159 } 160 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work); 161 162 static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter) 163 { 164 spin_lock_bh(&adapter->rx_proc_lock); 165 if (adapter->rx_processing) { 166 spin_unlock_bh(&adapter->rx_proc_lock); 167 } else { 168 spin_unlock_bh(&adapter->rx_proc_lock); 169 queue_work(adapter->rx_workqueue, &adapter->rx_work); 170 } 171 } 172 173 static int mwifiex_process_rx(struct mwifiex_adapter *adapter) 174 { 175 struct sk_buff *skb; 176 struct mwifiex_rxinfo *rx_info; 177 178 spin_lock_bh(&adapter->rx_proc_lock); 179 if (adapter->rx_processing || adapter->rx_locked) { 180 spin_unlock_bh(&adapter->rx_proc_lock); 181 goto exit_rx_proc; 182 } else { 183 adapter->rx_processing = true; 184 spin_unlock_bh(&adapter->rx_proc_lock); 185 } 186 187 /* Check for Rx data */ 188 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 189 atomic_dec(&adapter->rx_pending); 190 if ((adapter->delay_main_work || 191 adapter->iface_type == MWIFIEX_USB) && 192 (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) { 193 if (adapter->if_ops.submit_rem_rx_urbs) 194 adapter->if_ops.submit_rem_rx_urbs(adapter); 195 adapter->delay_main_work = false; 196 mwifiex_queue_main_work(adapter); 197 } 198 rx_info = MWIFIEX_SKB_RXCB(skb); 199 if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) { 200 if (adapter->if_ops.deaggr_pkt) 201 adapter->if_ops.deaggr_pkt(adapter, skb); 202 dev_kfree_skb_any(skb); 203 } else { 204 mwifiex_handle_rx_packet(adapter, skb); 205 } 206 } 207 spin_lock_bh(&adapter->rx_proc_lock); 208 adapter->rx_processing = false; 209 spin_unlock_bh(&adapter->rx_proc_lock); 210 211 exit_rx_proc: 212 return 0; 213 } 214 215 static void maybe_quirk_fw_disable_ds(struct mwifiex_adapter *adapter) 216 { 217 struct mwifiex_private *priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA); 218 struct mwifiex_ver_ext ver_ext; 219 220 if (test_and_set_bit(MWIFIEX_IS_REQUESTING_FW_VEREXT, &adapter->work_flags)) 221 return; 222 223 memset(&ver_ext, 0, sizeof(ver_ext)); 224 ver_ext.version_str_sel = 1; 225 if (mwifiex_send_cmd(priv, HostCmd_CMD_VERSION_EXT, 226 HostCmd_ACT_GEN_GET, 0, &ver_ext, false)) { 227 mwifiex_dbg(priv->adapter, MSG, 228 "Checking hardware revision failed.\n"); 229 } 230 } 231 232 /* 233 * The main process. 234 * 235 * This function is the main procedure of the driver and handles various driver 236 * operations. It runs in a loop and provides the core functionalities. 237 * 238 * The main responsibilities of this function are - 239 * - Ensure concurrency control 240 * - Handle pending interrupts and call interrupt handlers 241 * - Wake up the card if required 242 * - Handle command responses and call response handlers 243 * - Handle events and call event handlers 244 * - Execute pending commands 245 * - Transmit pending data packets 246 */ 247 int mwifiex_main_process(struct mwifiex_adapter *adapter) 248 { 249 int ret = 0; 250 unsigned long flags; 251 252 spin_lock_irqsave(&adapter->main_proc_lock, flags); 253 254 /* Check if already processing */ 255 if (adapter->mwifiex_processing || adapter->main_locked) { 256 adapter->more_task_flag = true; 257 spin_unlock_irqrestore(&adapter->main_proc_lock, flags); 258 return 0; 259 } else { 260 adapter->mwifiex_processing = true; 261 spin_unlock_irqrestore(&adapter->main_proc_lock, flags); 262 } 263 process_start: 264 do { 265 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 266 break; 267 268 /* For non-USB interfaces, If we process interrupts first, it 269 * would increase RX pending even further. Avoid this by 270 * checking if rx_pending has crossed high threshold and 271 * schedule rx work queue and then process interrupts. 272 * For USB interface, there are no interrupts. We already have 273 * HIGH_RX_PENDING check in usb.c 274 */ 275 if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING && 276 adapter->iface_type != MWIFIEX_USB) { 277 adapter->delay_main_work = true; 278 mwifiex_queue_rx_work(adapter); 279 break; 280 } 281 282 /* Handle pending interrupt if any */ 283 if (adapter->int_status) { 284 if (adapter->hs_activated) 285 mwifiex_process_hs_config(adapter); 286 if (adapter->if_ops.process_int_status) 287 adapter->if_ops.process_int_status(adapter); 288 } 289 290 if (adapter->rx_work_enabled && adapter->data_received) 291 mwifiex_queue_rx_work(adapter); 292 293 /* Need to wake up the card ? */ 294 if ((adapter->ps_state == PS_STATE_SLEEP) && 295 (adapter->pm_wakeup_card_req && 296 !adapter->pm_wakeup_fw_try) && 297 (is_command_pending(adapter) || 298 !skb_queue_empty(&adapter->tx_data_q) || 299 !mwifiex_bypass_txlist_empty(adapter) || 300 !mwifiex_wmm_lists_empty(adapter))) { 301 adapter->pm_wakeup_fw_try = true; 302 mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3)); 303 adapter->if_ops.wakeup(adapter); 304 continue; 305 } 306 307 if (IS_CARD_RX_RCVD(adapter)) { 308 adapter->data_received = false; 309 adapter->pm_wakeup_fw_try = false; 310 timer_delete(&adapter->wakeup_timer); 311 if (adapter->ps_state == PS_STATE_SLEEP) 312 adapter->ps_state = PS_STATE_AWAKE; 313 } else { 314 /* We have tried to wakeup the card already */ 315 if (adapter->pm_wakeup_fw_try) 316 break; 317 if (adapter->ps_state == PS_STATE_PRE_SLEEP) 318 mwifiex_check_ps_cond(adapter); 319 320 if (adapter->ps_state != PS_STATE_AWAKE) 321 break; 322 if (adapter->tx_lock_flag) { 323 if (adapter->iface_type == MWIFIEX_USB) { 324 if (!adapter->usb_mc_setup) 325 break; 326 } else 327 break; 328 } 329 330 if ((!adapter->scan_chan_gap_enabled && 331 adapter->scan_processing) || adapter->data_sent || 332 mwifiex_is_tdls_chan_switching 333 (mwifiex_get_priv(adapter, 334 MWIFIEX_BSS_ROLE_STA)) || 335 (mwifiex_wmm_lists_empty(adapter) && 336 mwifiex_bypass_txlist_empty(adapter) && 337 skb_queue_empty(&adapter->tx_data_q))) { 338 if (adapter->cmd_sent || adapter->curr_cmd || 339 !mwifiex_is_send_cmd_allowed 340 (mwifiex_get_priv(adapter, 341 MWIFIEX_BSS_ROLE_STA)) || 342 (!is_command_pending(adapter))) 343 break; 344 } 345 } 346 347 /* Check for event */ 348 if (adapter->event_received) { 349 adapter->event_received = false; 350 mwifiex_process_event(adapter); 351 } 352 353 /* Check for Cmd Resp */ 354 if (adapter->cmd_resp_received) { 355 adapter->cmd_resp_received = false; 356 mwifiex_process_cmdresp(adapter); 357 358 /* call mwifiex back when init_fw is done */ 359 if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) { 360 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 361 mwifiex_init_fw_complete(adapter); 362 maybe_quirk_fw_disable_ds(adapter); 363 } 364 } 365 366 /* Check if we need to confirm Sleep Request 367 received previously */ 368 if (adapter->ps_state == PS_STATE_PRE_SLEEP) 369 mwifiex_check_ps_cond(adapter); 370 371 /* * The ps_state may have been changed during processing of 372 * Sleep Request event. 373 */ 374 if ((adapter->ps_state == PS_STATE_SLEEP) || 375 (adapter->ps_state == PS_STATE_PRE_SLEEP) || 376 (adapter->ps_state == PS_STATE_SLEEP_CFM)) { 377 continue; 378 } 379 380 if (adapter->tx_lock_flag) { 381 if (adapter->iface_type == MWIFIEX_USB) { 382 if (!adapter->usb_mc_setup) 383 continue; 384 } else 385 continue; 386 } 387 388 if (!adapter->cmd_sent && !adapter->curr_cmd && 389 mwifiex_is_send_cmd_allowed 390 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) { 391 if (mwifiex_exec_next_cmd(adapter) == -1) { 392 ret = -1; 393 break; 394 } 395 } 396 397 /** If USB Multi channel setup ongoing, 398 * wait for ready to tx data. 399 */ 400 if (adapter->iface_type == MWIFIEX_USB && 401 adapter->usb_mc_setup) 402 continue; 403 404 if ((adapter->scan_chan_gap_enabled || 405 !adapter->scan_processing) && 406 !adapter->data_sent && 407 !skb_queue_empty(&adapter->tx_data_q)) { 408 if (adapter->hs_activated_manually) { 409 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY), 410 MWIFIEX_ASYNC_CMD); 411 adapter->hs_activated_manually = false; 412 } 413 414 mwifiex_process_tx_queue(adapter); 415 if (adapter->hs_activated) { 416 clear_bit(MWIFIEX_IS_HS_CONFIGURED, 417 &adapter->work_flags); 418 mwifiex_hs_activated_event 419 (mwifiex_get_priv 420 (adapter, MWIFIEX_BSS_ROLE_ANY), 421 false); 422 } 423 } 424 425 if ((adapter->scan_chan_gap_enabled || 426 !adapter->scan_processing) && 427 !adapter->data_sent && 428 !mwifiex_bypass_txlist_empty(adapter) && 429 !mwifiex_is_tdls_chan_switching 430 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) { 431 if (adapter->hs_activated_manually) { 432 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY), 433 MWIFIEX_ASYNC_CMD); 434 adapter->hs_activated_manually = false; 435 } 436 437 mwifiex_process_bypass_tx(adapter); 438 if (adapter->hs_activated) { 439 clear_bit(MWIFIEX_IS_HS_CONFIGURED, 440 &adapter->work_flags); 441 mwifiex_hs_activated_event 442 (mwifiex_get_priv 443 (adapter, MWIFIEX_BSS_ROLE_ANY), 444 false); 445 } 446 } 447 448 if ((adapter->scan_chan_gap_enabled || 449 !adapter->scan_processing) && 450 !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) && 451 !mwifiex_is_tdls_chan_switching 452 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) { 453 if (adapter->hs_activated_manually) { 454 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY), 455 MWIFIEX_ASYNC_CMD); 456 adapter->hs_activated_manually = false; 457 } 458 459 mwifiex_wmm_process_tx(adapter); 460 if (adapter->hs_activated) { 461 clear_bit(MWIFIEX_IS_HS_CONFIGURED, 462 &adapter->work_flags); 463 mwifiex_hs_activated_event 464 (mwifiex_get_priv 465 (adapter, MWIFIEX_BSS_ROLE_ANY), 466 false); 467 } 468 } 469 470 if (adapter->delay_null_pkt && !adapter->cmd_sent && 471 !adapter->curr_cmd && !is_command_pending(adapter) && 472 (mwifiex_wmm_lists_empty(adapter) && 473 mwifiex_bypass_txlist_empty(adapter) && 474 skb_queue_empty(&adapter->tx_data_q))) { 475 if (!mwifiex_send_null_packet 476 (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), 477 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | 478 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) { 479 adapter->delay_null_pkt = false; 480 adapter->ps_state = PS_STATE_SLEEP; 481 } 482 break; 483 } 484 } while (true); 485 486 spin_lock_irqsave(&adapter->main_proc_lock, flags); 487 if (adapter->more_task_flag) { 488 adapter->more_task_flag = false; 489 spin_unlock_irqrestore(&adapter->main_proc_lock, flags); 490 goto process_start; 491 } 492 adapter->mwifiex_processing = false; 493 spin_unlock_irqrestore(&adapter->main_proc_lock, flags); 494 495 return ret; 496 } 497 EXPORT_SYMBOL_GPL(mwifiex_main_process); 498 499 /* 500 * This function frees the adapter structure. 501 * 502 * Additionally, this closes the netlink socket, frees the timers 503 * and private structures. 504 */ 505 static void mwifiex_free_adapter(struct mwifiex_adapter *adapter) 506 { 507 if (!adapter) { 508 pr_err("%s: adapter is NULL\n", __func__); 509 return; 510 } 511 512 mwifiex_unregister(adapter); 513 pr_debug("info: %s: free adapter\n", __func__); 514 } 515 516 /* 517 * This function cancels all works in the queue and destroys 518 * the main workqueue. 519 */ 520 static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter) 521 { 522 if (adapter->workqueue) { 523 destroy_workqueue(adapter->workqueue); 524 adapter->workqueue = NULL; 525 } 526 527 if (adapter->rx_workqueue) { 528 destroy_workqueue(adapter->rx_workqueue); 529 adapter->rx_workqueue = NULL; 530 } 531 532 if (adapter->host_mlme_workqueue) { 533 destroy_workqueue(adapter->host_mlme_workqueue); 534 adapter->host_mlme_workqueue = NULL; 535 } 536 } 537 538 /* 539 * This function gets firmware and initializes it. 540 * 541 * The main initialization steps followed are - 542 * - Download the correct firmware to card 543 * - Issue the init commands to firmware 544 */ 545 static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context) 546 { 547 int ret; 548 char fmt[64]; 549 struct mwifiex_adapter *adapter = context; 550 struct mwifiex_fw_image fw; 551 bool init_failed = false; 552 struct wireless_dev *wdev; 553 struct completion *fw_done = adapter->fw_done; 554 555 if (!firmware) { 556 mwifiex_dbg(adapter, ERROR, 557 "Failed to get firmware %s\n", adapter->fw_name); 558 goto err_dnld_fw; 559 } 560 561 memset(&fw, 0, sizeof(struct mwifiex_fw_image)); 562 adapter->firmware = firmware; 563 fw.fw_buf = (u8 *) adapter->firmware->data; 564 fw.fw_len = adapter->firmware->size; 565 566 if (adapter->if_ops.dnld_fw) { 567 ret = adapter->if_ops.dnld_fw(adapter, &fw); 568 } else { 569 ret = mwifiex_dnld_fw(adapter, &fw); 570 } 571 572 if (ret == -1) 573 goto err_dnld_fw; 574 575 mwifiex_dbg(adapter, MSG, "WLAN FW is active\n"); 576 577 if (cal_data_cfg) { 578 if ((request_firmware(&adapter->cal_data, cal_data_cfg, 579 adapter->dev)) < 0) 580 mwifiex_dbg(adapter, ERROR, 581 "Cal data request_firmware() failed\n"); 582 } 583 584 /* enable host interrupt after fw dnld is successful */ 585 if (adapter->if_ops.enable_int) { 586 if (adapter->if_ops.enable_int(adapter)) 587 goto err_dnld_fw; 588 } 589 590 adapter->init_wait_q_woken = false; 591 ret = mwifiex_init_fw(adapter); 592 if (ret == -1) { 593 goto err_init_fw; 594 } else if (!ret) { 595 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 596 goto done; 597 } 598 /* Wait for mwifiex_init to complete */ 599 if (!adapter->mfg_mode) { 600 wait_event_interruptible(adapter->init_wait_q, 601 adapter->init_wait_q_woken); 602 if (adapter->hw_status != MWIFIEX_HW_STATUS_READY) 603 goto err_init_fw; 604 } 605 606 if (!adapter->wiphy) { 607 if (mwifiex_register_cfg80211(adapter)) { 608 mwifiex_dbg(adapter, ERROR, 609 "cannot register with cfg80211\n"); 610 goto err_init_fw; 611 } 612 } 613 614 if (mwifiex_init_channel_scan_gap(adapter)) { 615 mwifiex_dbg(adapter, ERROR, 616 "could not init channel stats table\n"); 617 goto err_init_chan_scan; 618 } 619 620 if (driver_mode) { 621 driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK; 622 driver_mode |= MWIFIEX_DRIVER_MODE_STA; 623 } 624 625 rtnl_lock(); 626 wiphy_lock(adapter->wiphy); 627 /* Create station interface by default */ 628 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM, 629 NL80211_IFTYPE_STATION, NULL); 630 if (IS_ERR(wdev)) { 631 mwifiex_dbg(adapter, ERROR, 632 "cannot create default STA interface\n"); 633 wiphy_unlock(adapter->wiphy); 634 rtnl_unlock(); 635 goto err_add_intf; 636 } 637 638 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) { 639 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM, 640 NL80211_IFTYPE_AP, NULL); 641 if (IS_ERR(wdev)) { 642 mwifiex_dbg(adapter, ERROR, 643 "cannot create AP interface\n"); 644 wiphy_unlock(adapter->wiphy); 645 rtnl_unlock(); 646 goto err_add_intf; 647 } 648 } 649 650 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) { 651 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM, 652 NL80211_IFTYPE_P2P_CLIENT, NULL); 653 if (IS_ERR(wdev)) { 654 mwifiex_dbg(adapter, ERROR, 655 "cannot create p2p client interface\n"); 656 wiphy_unlock(adapter->wiphy); 657 rtnl_unlock(); 658 goto err_add_intf; 659 } 660 } 661 wiphy_unlock(adapter->wiphy); 662 rtnl_unlock(); 663 664 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); 665 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt); 666 adapter->is_up = true; 667 goto done; 668 669 err_add_intf: 670 vfree(adapter->chan_stats); 671 err_init_chan_scan: 672 wiphy_unregister(adapter->wiphy); 673 wiphy_free(adapter->wiphy); 674 err_init_fw: 675 if (adapter->if_ops.disable_int) 676 adapter->if_ops.disable_int(adapter); 677 err_dnld_fw: 678 mwifiex_dbg(adapter, ERROR, 679 "info: %s: unregister device\n", __func__); 680 if (adapter->if_ops.unregister_dev) 681 adapter->if_ops.unregister_dev(adapter); 682 683 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 684 mwifiex_terminate_workqueue(adapter); 685 686 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { 687 pr_debug("info: %s: shutdown mwifiex\n", __func__); 688 mwifiex_shutdown_drv(adapter); 689 mwifiex_free_cmd_buffers(adapter); 690 } 691 692 init_failed = true; 693 done: 694 if (adapter->firmware) { 695 release_firmware(adapter->firmware); 696 adapter->firmware = NULL; 697 } 698 if (init_failed) { 699 if (adapter->irq_wakeup >= 0) 700 device_init_wakeup(adapter->dev, false); 701 mwifiex_free_adapter(adapter); 702 } 703 /* Tell all current and future waiters we're finished */ 704 complete_all(fw_done); 705 706 return init_failed ? -EIO : 0; 707 } 708 709 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context) 710 { 711 _mwifiex_fw_dpc(firmware, context); 712 } 713 714 /* 715 * This function gets the firmware and (if called asynchronously) kicks off the 716 * HW init when done. 717 */ 718 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter, 719 bool req_fw_nowait) 720 { 721 int ret; 722 723 /* Override default firmware with manufacturing one if 724 * manufacturing mode is enabled 725 */ 726 if (mfg_mode) 727 strscpy(adapter->fw_name, MFG_FIRMWARE, 728 sizeof(adapter->fw_name)); 729 730 if (req_fw_nowait) { 731 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name, 732 adapter->dev, GFP_KERNEL, adapter, 733 mwifiex_fw_dpc); 734 } else { 735 ret = request_firmware(&adapter->firmware, 736 adapter->fw_name, 737 adapter->dev); 738 } 739 740 if (ret < 0) 741 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n", 742 req_fw_nowait ? "_nowait" : "", ret); 743 return ret; 744 } 745 746 /* 747 * CFG802.11 network device handler for open. 748 * 749 * Starts the data queue. 750 */ 751 static int 752 mwifiex_open(struct net_device *dev) 753 { 754 netif_carrier_off(dev); 755 756 return 0; 757 } 758 759 /* 760 * CFG802.11 network device handler for close. 761 */ 762 static int 763 mwifiex_close(struct net_device *dev) 764 { 765 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 766 767 if (priv->scan_request) { 768 struct cfg80211_scan_info info = { 769 .aborted = true, 770 }; 771 772 mwifiex_dbg(priv->adapter, INFO, 773 "aborting scan on ndo_stop\n"); 774 cfg80211_scan_done(priv->scan_request, &info); 775 priv->scan_request = NULL; 776 priv->scan_aborting = true; 777 } 778 779 if (priv->sched_scanning) { 780 mwifiex_dbg(priv->adapter, INFO, 781 "aborting bgscan on ndo_stop\n"); 782 mwifiex_stop_bg_scan(priv); 783 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0); 784 } 785 786 return 0; 787 } 788 789 static bool 790 mwifiex_bypass_tx_queue(struct mwifiex_private *priv, 791 struct sk_buff *skb) 792 { 793 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; 794 795 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE || 796 mwifiex_is_skb_mgmt_frame(skb) || 797 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA && 798 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && 799 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) { 800 mwifiex_dbg(priv->adapter, DATA, 801 "bypass txqueue; eth type %#x, mgmt %d\n", 802 ntohs(eth_hdr->h_proto), 803 mwifiex_is_skb_mgmt_frame(skb)); 804 if (eth_hdr->h_proto == htons(ETH_P_PAE)) 805 mwifiex_dbg(priv->adapter, MSG, 806 "key: send EAPOL to %pM\n", 807 eth_hdr->h_dest); 808 return true; 809 } 810 811 return false; 812 } 813 /* 814 * Add buffer into wmm tx queue and queue work to transmit it. 815 */ 816 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb) 817 { 818 struct netdev_queue *txq; 819 int index = mwifiex_1d_to_wmm_queue[skb->priority]; 820 821 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) { 822 txq = netdev_get_tx_queue(priv->netdev, index); 823 if (!netif_tx_queue_stopped(txq)) { 824 netif_tx_stop_queue(txq); 825 mwifiex_dbg(priv->adapter, DATA, 826 "stop queue: %d\n", index); 827 } 828 } 829 830 if (mwifiex_bypass_tx_queue(priv, skb)) { 831 atomic_inc(&priv->adapter->tx_pending); 832 atomic_inc(&priv->adapter->bypass_tx_pending); 833 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb); 834 } else { 835 atomic_inc(&priv->adapter->tx_pending); 836 mwifiex_wmm_add_buf_txqueue(priv, skb); 837 } 838 839 mwifiex_queue_main_work(priv->adapter); 840 841 return 0; 842 } 843 844 struct sk_buff * 845 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv, 846 struct sk_buff *skb, u8 flag, u64 *cookie) 847 { 848 struct sk_buff *orig_skb = skb; 849 struct mwifiex_txinfo *tx_info, *orig_tx_info; 850 851 skb = skb_clone(skb, GFP_ATOMIC); 852 if (skb) { 853 int id; 854 855 spin_lock_bh(&priv->ack_status_lock); 856 id = idr_alloc(&priv->ack_status_frames, orig_skb, 857 1, 0x10, GFP_ATOMIC); 858 spin_unlock_bh(&priv->ack_status_lock); 859 860 if (id >= 0) { 861 tx_info = MWIFIEX_SKB_TXCB(skb); 862 tx_info->ack_frame_id = id; 863 tx_info->flags |= flag; 864 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb); 865 orig_tx_info->ack_frame_id = id; 866 orig_tx_info->flags |= flag; 867 868 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie) 869 orig_tx_info->cookie = *cookie; 870 871 } else if (skb_shared(skb)) { 872 kfree_skb(orig_skb); 873 } else { 874 kfree_skb(skb); 875 skb = orig_skb; 876 } 877 } else { 878 /* couldn't clone -- lose tx status ... */ 879 skb = orig_skb; 880 } 881 882 return skb; 883 } 884 885 /* 886 * CFG802.11 network device handler for data transmission. 887 */ 888 static netdev_tx_t 889 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 890 { 891 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 892 struct sk_buff *new_skb; 893 struct mwifiex_txinfo *tx_info; 894 bool multicast; 895 896 mwifiex_dbg(priv->adapter, DATA, 897 "data: %lu BSS(%d-%d): Data <= kernel\n", 898 jiffies, priv->bss_type, priv->bss_num); 899 900 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) { 901 kfree_skb(skb); 902 priv->stats.tx_dropped++; 903 return 0; 904 } 905 if (!skb->len || (skb->len > ETH_FRAME_LEN)) { 906 mwifiex_dbg(priv->adapter, ERROR, 907 "Tx: bad skb len %d\n", skb->len); 908 kfree_skb(skb); 909 priv->stats.tx_dropped++; 910 return 0; 911 } 912 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) { 913 mwifiex_dbg(priv->adapter, DATA, 914 "data: Tx: insufficient skb headroom %d\n", 915 skb_headroom(skb)); 916 /* Insufficient skb headroom - allocate a new skb */ 917 new_skb = 918 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN); 919 if (unlikely(!new_skb)) { 920 mwifiex_dbg(priv->adapter, ERROR, 921 "Tx: cannot alloca new_skb\n"); 922 kfree_skb(skb); 923 priv->stats.tx_dropped++; 924 return 0; 925 } 926 kfree_skb(skb); 927 skb = new_skb; 928 mwifiex_dbg(priv->adapter, INFO, 929 "info: new skb headroomd %d\n", 930 skb_headroom(skb)); 931 } 932 933 tx_info = MWIFIEX_SKB_TXCB(skb); 934 memset(tx_info, 0, sizeof(*tx_info)); 935 tx_info->bss_num = priv->bss_num; 936 tx_info->bss_type = priv->bss_type; 937 tx_info->pkt_len = skb->len; 938 939 multicast = is_multicast_ether_addr(skb->data); 940 941 if (unlikely(!multicast && skb->sk && 942 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS && 943 priv->adapter->fw_api_ver == MWIFIEX_FW_V15)) 944 skb = mwifiex_clone_skb_for_tx_status(priv, 945 skb, 946 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL); 947 948 /* Record the current time the packet was queued; used to 949 * determine the amount of time the packet was queued in 950 * the driver before it was sent to the firmware. 951 * The delay is then sent along with the packet to the 952 * firmware for aggregate delay calculation for stats and 953 * MSDU lifetime expiry. 954 */ 955 __net_timestamp(skb); 956 957 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && 958 priv->bss_type == MWIFIEX_BSS_TYPE_STA && 959 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) { 960 if (priv->adapter->auto_tdls && priv->check_tdls_tx) 961 mwifiex_tdls_check_tx(priv, skb); 962 } 963 964 mwifiex_queue_tx_pkt(priv, skb); 965 966 return 0; 967 } 968 969 int mwifiex_set_mac_address(struct mwifiex_private *priv, 970 struct net_device *dev, bool external, 971 u8 *new_mac) 972 { 973 int ret; 974 u64 mac_addr, old_mac_addr; 975 976 old_mac_addr = ether_addr_to_u64(priv->curr_addr); 977 978 if (external) { 979 mac_addr = ether_addr_to_u64(new_mac); 980 } else { 981 /* Internal mac address change */ 982 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY) 983 return -EOPNOTSUPP; 984 985 mac_addr = old_mac_addr; 986 987 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) { 988 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT); 989 mac_addr += priv->bss_num; 990 } else if (priv->adapter->priv[0] != priv) { 991 /* Set mac address based on bss_type/bss_num */ 992 mac_addr ^= BIT_ULL(priv->bss_type + 8); 993 mac_addr += priv->bss_num; 994 } 995 } 996 997 u64_to_ether_addr(mac_addr, priv->curr_addr); 998 999 /* Send request to firmware */ 1000 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS, 1001 HostCmd_ACT_GEN_SET, 0, NULL, true); 1002 1003 if (ret) { 1004 u64_to_ether_addr(old_mac_addr, priv->curr_addr); 1005 mwifiex_dbg(priv->adapter, ERROR, 1006 "set mac address failed: ret=%d\n", ret); 1007 return ret; 1008 } 1009 1010 eth_hw_addr_set(dev, priv->curr_addr); 1011 return 0; 1012 } 1013 1014 /* CFG802.11 network device handler for setting MAC address. 1015 */ 1016 static int 1017 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr) 1018 { 1019 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 1020 struct sockaddr *hw_addr = addr; 1021 1022 return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data); 1023 } 1024 1025 /* 1026 * CFG802.11 network device handler for setting multicast list. 1027 */ 1028 static void mwifiex_set_multicast_list(struct net_device *dev) 1029 { 1030 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 1031 struct mwifiex_multicast_list mcast_list; 1032 1033 if (dev->flags & IFF_PROMISC) { 1034 mcast_list.mode = MWIFIEX_PROMISC_MODE; 1035 } else if (dev->flags & IFF_ALLMULTI || 1036 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) { 1037 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE; 1038 } else { 1039 mcast_list.mode = MWIFIEX_MULTICAST_MODE; 1040 mcast_list.num_multicast_addr = 1041 mwifiex_copy_mcast_addr(&mcast_list, dev); 1042 } 1043 mwifiex_request_set_multicast_list(priv, &mcast_list); 1044 } 1045 1046 /* 1047 * CFG802.11 network device handler for transmission timeout. 1048 */ 1049 static void 1050 mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue) 1051 { 1052 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 1053 1054 priv->num_tx_timeout++; 1055 priv->tx_timeout_cnt++; 1056 mwifiex_dbg(priv->adapter, ERROR, 1057 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n", 1058 jiffies, priv->tx_timeout_cnt, priv->bss_type, 1059 priv->bss_num); 1060 mwifiex_set_trans_start(dev); 1061 1062 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD && 1063 priv->adapter->if_ops.card_reset) { 1064 mwifiex_dbg(priv->adapter, ERROR, 1065 "tx_timeout_cnt exceeds threshold.\t" 1066 "Triggering card reset!\n"); 1067 priv->adapter->if_ops.card_reset(priv->adapter); 1068 } 1069 } 1070 1071 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter) 1072 { 1073 struct usb_card_rec *card = adapter->card; 1074 struct mwifiex_private *priv; 1075 u16 tx_buf_size; 1076 int i, ret; 1077 1078 card->mc_resync_flag = true; 1079 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 1080 if (atomic_read(&card->port[i].tx_data_urb_pending)) { 1081 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n"); 1082 return; 1083 } 1084 } 1085 1086 card->mc_resync_flag = false; 1087 tx_buf_size = 0xffff; 1088 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 1089 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF, 1090 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false); 1091 if (ret) 1092 mwifiex_dbg(adapter, ERROR, 1093 "send reconfig tx buf size cmd err\n"); 1094 } 1095 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync); 1096 1097 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter) 1098 { 1099 /* Dump all the memory data into single file, a userspace script will 1100 * be used to split all the memory data to multiple files 1101 */ 1102 mwifiex_dbg(adapter, MSG, 1103 "== mwifiex dump information to /sys/class/devcoredump start\n"); 1104 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len, 1105 GFP_KERNEL); 1106 mwifiex_dbg(adapter, MSG, 1107 "== mwifiex dump information to /sys/class/devcoredump end\n"); 1108 1109 /* Device dump data will be freed in device coredump release function 1110 * after 5 min. Here reset adapter->devdump_data and ->devdump_len 1111 * to avoid it been accidentally reused. 1112 */ 1113 adapter->devdump_data = NULL; 1114 adapter->devdump_len = 0; 1115 } 1116 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump); 1117 1118 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter) 1119 { 1120 char *p; 1121 char drv_version[64]; 1122 struct usb_card_rec *cardp; 1123 struct sdio_mmc_card *sdio_card; 1124 struct mwifiex_private *priv; 1125 int i, idx; 1126 struct netdev_queue *txq; 1127 struct mwifiex_debug_info *debug_info; 1128 1129 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n"); 1130 1131 p = adapter->devdump_data; 1132 strcpy(p, "========Start dump driverinfo========\n"); 1133 p += strlen("========Start dump driverinfo========\n"); 1134 p += sprintf(p, "driver_name = " "\"mwifiex\"\n"); 1135 1136 mwifiex_drv_get_driver_version(adapter, drv_version, 1137 sizeof(drv_version) - 1); 1138 p += sprintf(p, "driver_version = %s\n", drv_version); 1139 1140 if (adapter->iface_type == MWIFIEX_USB) { 1141 cardp = (struct usb_card_rec *)adapter->card; 1142 p += sprintf(p, "tx_cmd_urb_pending = %d\n", 1143 atomic_read(&cardp->tx_cmd_urb_pending)); 1144 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n", 1145 atomic_read(&cardp->port[0].tx_data_urb_pending)); 1146 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n", 1147 atomic_read(&cardp->port[1].tx_data_urb_pending)); 1148 p += sprintf(p, "rx_cmd_urb_pending = %d\n", 1149 atomic_read(&cardp->rx_cmd_urb_pending)); 1150 p += sprintf(p, "rx_data_urb_pending = %d\n", 1151 atomic_read(&cardp->rx_data_urb_pending)); 1152 } 1153 1154 p += sprintf(p, "tx_pending = %d\n", 1155 atomic_read(&adapter->tx_pending)); 1156 p += sprintf(p, "rx_pending = %d\n", 1157 atomic_read(&adapter->rx_pending)); 1158 1159 if (adapter->iface_type == MWIFIEX_SDIO) { 1160 sdio_card = (struct sdio_mmc_card *)adapter->card; 1161 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n", 1162 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port); 1163 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n", 1164 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port); 1165 } 1166 1167 for (i = 0; i < adapter->priv_num; i++) { 1168 if (!adapter->priv[i]->netdev) 1169 continue; 1170 priv = adapter->priv[i]; 1171 p += sprintf(p, "\n[interface : \"%s\"]\n", 1172 priv->netdev->name); 1173 p += sprintf(p, "wmm_tx_pending[0] = %d\n", 1174 atomic_read(&priv->wmm_tx_pending[0])); 1175 p += sprintf(p, "wmm_tx_pending[1] = %d\n", 1176 atomic_read(&priv->wmm_tx_pending[1])); 1177 p += sprintf(p, "wmm_tx_pending[2] = %d\n", 1178 atomic_read(&priv->wmm_tx_pending[2])); 1179 p += sprintf(p, "wmm_tx_pending[3] = %d\n", 1180 atomic_read(&priv->wmm_tx_pending[3])); 1181 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ? 1182 "Disconnected" : "Connected"); 1183 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev) 1184 ? "on" : "off")); 1185 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) { 1186 txq = netdev_get_tx_queue(priv->netdev, idx); 1187 p += sprintf(p, "tx queue %d:%s ", idx, 1188 netif_tx_queue_stopped(txq) ? 1189 "stopped" : "started"); 1190 } 1191 p += sprintf(p, "\n%s: num_tx_timeout = %d\n", 1192 priv->netdev->name, priv->num_tx_timeout); 1193 } 1194 1195 if (adapter->iface_type == MWIFIEX_SDIO || 1196 adapter->iface_type == MWIFIEX_PCIE) { 1197 p += sprintf(p, "\n=== %s register dump===\n", 1198 adapter->iface_type == MWIFIEX_SDIO ? 1199 "SDIO" : "PCIE"); 1200 if (adapter->if_ops.reg_dump) 1201 p += adapter->if_ops.reg_dump(adapter, p); 1202 } 1203 p += sprintf(p, "\n=== more debug information\n"); 1204 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL); 1205 if (debug_info) { 1206 for (i = 0; i < adapter->priv_num; i++) { 1207 if (!adapter->priv[i]->netdev) 1208 continue; 1209 priv = adapter->priv[i]; 1210 mwifiex_get_debug_info(priv, debug_info); 1211 p += mwifiex_debug_info_to_buffer(priv, p, debug_info); 1212 break; 1213 } 1214 kfree(debug_info); 1215 } 1216 1217 strcpy(p, "\n========End dump========\n"); 1218 p += strlen("\n========End dump========\n"); 1219 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n"); 1220 adapter->devdump_len = p - (char *)adapter->devdump_data; 1221 } 1222 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump); 1223 1224 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter) 1225 { 1226 u8 idx; 1227 char *fw_dump_ptr; 1228 u32 dump_len = 0; 1229 1230 for (idx = 0; idx < adapter->num_mem_types; idx++) { 1231 struct memory_type_mapping *entry = 1232 &adapter->mem_type_mapping_tbl[idx]; 1233 1234 if (entry->mem_ptr) { 1235 dump_len += (strlen("========Start dump ") + 1236 strlen(entry->mem_name) + 1237 strlen("========\n") + 1238 (entry->mem_size + 1) + 1239 strlen("\n========End dump========\n")); 1240 } 1241 } 1242 1243 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) { 1244 /* Realloc in case buffer overflow */ 1245 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len); 1246 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n"); 1247 if (!fw_dump_ptr) { 1248 vfree(adapter->devdump_data); 1249 mwifiex_dbg(adapter, ERROR, 1250 "vzalloc devdump data failure!\n"); 1251 return; 1252 } 1253 1254 memmove(fw_dump_ptr, adapter->devdump_data, 1255 adapter->devdump_len); 1256 vfree(adapter->devdump_data); 1257 adapter->devdump_data = fw_dump_ptr; 1258 } 1259 1260 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len; 1261 1262 for (idx = 0; idx < adapter->num_mem_types; idx++) { 1263 struct memory_type_mapping *entry = 1264 &adapter->mem_type_mapping_tbl[idx]; 1265 1266 if (entry->mem_ptr) { 1267 strcpy(fw_dump_ptr, "========Start dump "); 1268 fw_dump_ptr += strlen("========Start dump "); 1269 1270 strcpy(fw_dump_ptr, entry->mem_name); 1271 fw_dump_ptr += strlen(entry->mem_name); 1272 1273 strcpy(fw_dump_ptr, "========\n"); 1274 fw_dump_ptr += strlen("========\n"); 1275 1276 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size); 1277 fw_dump_ptr += entry->mem_size; 1278 1279 strcpy(fw_dump_ptr, "\n========End dump========\n"); 1280 fw_dump_ptr += strlen("\n========End dump========\n"); 1281 } 1282 } 1283 1284 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data; 1285 1286 for (idx = 0; idx < adapter->num_mem_types; idx++) { 1287 struct memory_type_mapping *entry = 1288 &adapter->mem_type_mapping_tbl[idx]; 1289 1290 vfree(entry->mem_ptr); 1291 entry->mem_ptr = NULL; 1292 entry->mem_size = 0; 1293 } 1294 } 1295 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info); 1296 1297 /* 1298 * CFG802.11 network device handler for statistics retrieval. 1299 */ 1300 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev) 1301 { 1302 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 1303 1304 return &priv->stats; 1305 } 1306 1307 static u16 1308 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb, 1309 struct net_device *sb_dev) 1310 { 1311 skb->priority = cfg80211_classify8021d(skb, NULL); 1312 return mwifiex_1d_to_wmm_queue[skb->priority]; 1313 } 1314 1315 /* Network device handlers */ 1316 static const struct net_device_ops mwifiex_netdev_ops = { 1317 .ndo_open = mwifiex_open, 1318 .ndo_stop = mwifiex_close, 1319 .ndo_start_xmit = mwifiex_hard_start_xmit, 1320 .ndo_set_mac_address = mwifiex_ndo_set_mac_address, 1321 .ndo_validate_addr = eth_validate_addr, 1322 .ndo_tx_timeout = mwifiex_tx_timeout, 1323 .ndo_get_stats = mwifiex_get_stats, 1324 .ndo_set_rx_mode = mwifiex_set_multicast_list, 1325 .ndo_select_queue = mwifiex_netdev_select_wmm_queue, 1326 }; 1327 1328 /* 1329 * This function initializes the private structure parameters. 1330 * 1331 * The following wait queues are initialized - 1332 * - IOCTL wait queue 1333 * - Command wait queue 1334 * - Statistics wait queue 1335 * 1336 * ...and the following default parameters are set - 1337 * - Current key index : Set to 0 1338 * - Rate index : Set to auto 1339 * - Media connected : Set to disconnected 1340 * - Adhoc link sensed : Set to false 1341 * - Nick name : Set to null 1342 * - Number of Tx timeout : Set to 0 1343 * - Device address : Set to current address 1344 * - Rx histogram statistc : Set to 0 1345 * 1346 * In addition, the CFG80211 work queue is also created. 1347 */ 1348 void mwifiex_init_priv_params(struct mwifiex_private *priv, 1349 struct net_device *dev) 1350 { 1351 dev->netdev_ops = &mwifiex_netdev_ops; 1352 dev->needs_free_netdev = true; 1353 /* Initialize private structure */ 1354 priv->current_key_index = 0; 1355 priv->media_connected = false; 1356 memset(priv->mgmt_ie, 0, 1357 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX); 1358 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK; 1359 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK; 1360 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK; 1361 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK; 1362 priv->num_tx_timeout = 0; 1363 if (is_valid_ether_addr(dev->dev_addr)) 1364 ether_addr_copy(priv->curr_addr, dev->dev_addr); 1365 else 1366 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr); 1367 1368 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA || 1369 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { 1370 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL); 1371 if (priv->hist_data) 1372 mwifiex_hist_data_reset(priv); 1373 } 1374 } 1375 1376 /* 1377 * This function check if command is pending. 1378 */ 1379 int is_command_pending(struct mwifiex_adapter *adapter) 1380 { 1381 int is_cmd_pend_q_empty; 1382 1383 spin_lock_bh(&adapter->cmd_pending_q_lock); 1384 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 1385 spin_unlock_bh(&adapter->cmd_pending_q_lock); 1386 1387 return !is_cmd_pend_q_empty; 1388 } 1389 1390 /* This is the host mlme work queue function. 1391 * It handles the host mlme operations. 1392 */ 1393 static void mwifiex_host_mlme_work_queue(struct work_struct *work) 1394 { 1395 struct mwifiex_adapter *adapter = 1396 container_of(work, struct mwifiex_adapter, host_mlme_work); 1397 1398 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags)) 1399 return; 1400 1401 /* Check for host mlme disconnection */ 1402 if (adapter->host_mlme_link_lost) { 1403 if (adapter->priv_link_lost) { 1404 mwifiex_reset_connect_state(adapter->priv_link_lost, 1405 WLAN_REASON_DEAUTH_LEAVING, 1406 true); 1407 adapter->priv_link_lost = NULL; 1408 } 1409 adapter->host_mlme_link_lost = false; 1410 } 1411 1412 /* Check for host mlme Assoc Resp */ 1413 if (adapter->assoc_resp_received) { 1414 mwifiex_process_assoc_resp(adapter); 1415 adapter->assoc_resp_received = false; 1416 } 1417 } 1418 1419 /* 1420 * This is the RX work queue function. 1421 * 1422 * It handles the RX operations. 1423 */ 1424 static void mwifiex_rx_work_queue(struct work_struct *work) 1425 { 1426 struct mwifiex_adapter *adapter = 1427 container_of(work, struct mwifiex_adapter, rx_work); 1428 1429 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags)) 1430 return; 1431 mwifiex_process_rx(adapter); 1432 } 1433 1434 /* 1435 * This is the main work queue function. 1436 * 1437 * It handles the main process, which in turn handles the complete 1438 * driver operations. 1439 */ 1440 static void mwifiex_main_work_queue(struct work_struct *work) 1441 { 1442 struct mwifiex_adapter *adapter = 1443 container_of(work, struct mwifiex_adapter, main_work); 1444 1445 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags)) 1446 return; 1447 mwifiex_main_process(adapter); 1448 } 1449 1450 /* Common teardown code used for both device removal and reset */ 1451 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter) 1452 { 1453 struct mwifiex_private *priv; 1454 int i; 1455 1456 /* We can no longer handle interrupts once we start doing the teardown 1457 * below. 1458 */ 1459 if (adapter->if_ops.disable_int) 1460 adapter->if_ops.disable_int(adapter); 1461 1462 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 1463 mwifiex_terminate_workqueue(adapter); 1464 adapter->int_status = 0; 1465 1466 /* Stop data */ 1467 for (i = 0; i < adapter->priv_num; i++) { 1468 priv = adapter->priv[i]; 1469 if (priv->netdev) { 1470 mwifiex_stop_net_dev_queue(priv->netdev, adapter); 1471 if (netif_carrier_ok(priv->netdev)) 1472 netif_carrier_off(priv->netdev); 1473 netif_device_detach(priv->netdev); 1474 } 1475 } 1476 1477 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n"); 1478 mwifiex_shutdown_drv(adapter); 1479 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n"); 1480 1481 if (atomic_read(&adapter->rx_pending) || 1482 atomic_read(&adapter->tx_pending) || 1483 atomic_read(&adapter->cmd_pending)) { 1484 mwifiex_dbg(adapter, ERROR, 1485 "rx_pending=%d, tx_pending=%d,\t" 1486 "cmd_pending=%d\n", 1487 atomic_read(&adapter->rx_pending), 1488 atomic_read(&adapter->tx_pending), 1489 atomic_read(&adapter->cmd_pending)); 1490 } 1491 1492 for (i = 0; i < adapter->priv_num; i++) { 1493 priv = adapter->priv[i]; 1494 rtnl_lock(); 1495 if (priv->netdev && 1496 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) { 1497 /* 1498 * Close the netdev now, because if we do it later, the 1499 * netdev notifiers will need to acquire the wiphy lock 1500 * again --> deadlock. 1501 */ 1502 dev_close(priv->wdev.netdev); 1503 wiphy_lock(adapter->wiphy); 1504 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev); 1505 wiphy_unlock(adapter->wiphy); 1506 } 1507 rtnl_unlock(); 1508 } 1509 1510 wiphy_unregister(adapter->wiphy); 1511 wiphy_free(adapter->wiphy); 1512 adapter->wiphy = NULL; 1513 1514 vfree(adapter->chan_stats); 1515 mwifiex_free_cmd_buffers(adapter); 1516 } 1517 1518 /* 1519 * This function can be used for shutting down the adapter SW. 1520 */ 1521 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter) 1522 { 1523 struct mwifiex_private *priv; 1524 1525 if (!adapter) 1526 return 0; 1527 1528 wait_for_completion(adapter->fw_done); 1529 /* Caller should ensure we aren't suspending while this happens */ 1530 reinit_completion(adapter->fw_done); 1531 1532 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 1533 mwifiex_deauthenticate(priv, NULL); 1534 1535 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN); 1536 1537 mwifiex_uninit_sw(adapter); 1538 adapter->is_up = false; 1539 1540 if (adapter->if_ops.down_dev) 1541 adapter->if_ops.down_dev(adapter); 1542 1543 return 0; 1544 } 1545 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw); 1546 1547 /* This function can be used for reinitting the adapter SW. Required 1548 * code is extracted from mwifiex_add_card() 1549 */ 1550 int 1551 mwifiex_reinit_sw(struct mwifiex_adapter *adapter) 1552 { 1553 int ret; 1554 1555 mwifiex_init_lock_list(adapter); 1556 if (adapter->if_ops.up_dev) 1557 adapter->if_ops.up_dev(adapter); 1558 1559 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 1560 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 1561 init_waitqueue_head(&adapter->init_wait_q); 1562 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags); 1563 adapter->hs_activated = false; 1564 clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags); 1565 init_waitqueue_head(&adapter->hs_activate_wait_q); 1566 init_waitqueue_head(&adapter->cmd_wait_q.wait); 1567 adapter->cmd_wait_q.status = 0; 1568 adapter->scan_wait_q_woken = false; 1569 1570 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) 1571 adapter->rx_work_enabled = true; 1572 1573 adapter->workqueue = 1574 alloc_workqueue("MWIFIEX_WORK_QUEUE", 1575 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0); 1576 if (!adapter->workqueue) 1577 goto err_kmalloc; 1578 1579 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); 1580 1581 if (adapter->rx_work_enabled) { 1582 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE", 1583 WQ_HIGHPRI | 1584 WQ_MEM_RECLAIM | 1585 WQ_UNBOUND, 0); 1586 if (!adapter->rx_workqueue) 1587 goto err_kmalloc; 1588 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue); 1589 } 1590 1591 if (adapter->host_mlme_enabled) { 1592 adapter->host_mlme_workqueue = 1593 alloc_workqueue("MWIFIEX_HOST_MLME_WORK_QUEUE", 1594 WQ_HIGHPRI | 1595 WQ_MEM_RECLAIM | 1596 WQ_UNBOUND, 0); 1597 if (!adapter->host_mlme_workqueue) 1598 goto err_kmalloc; 1599 INIT_WORK(&adapter->host_mlme_work, 1600 mwifiex_host_mlme_work_queue); 1601 } 1602 1603 /* Register the device. Fill up the private data structure with 1604 * relevant information from the card. Some code extracted from 1605 * mwifiex_register_dev() 1606 */ 1607 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__); 1608 1609 if (mwifiex_init_hw_fw(adapter, false)) { 1610 mwifiex_dbg(adapter, ERROR, 1611 "%s: firmware init failed\n", __func__); 1612 goto err_init_fw; 1613 } 1614 1615 /* _mwifiex_fw_dpc() does its own cleanup */ 1616 ret = _mwifiex_fw_dpc(adapter->firmware, adapter); 1617 if (ret) { 1618 pr_err("Failed to bring up adapter: %d\n", ret); 1619 return ret; 1620 } 1621 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__); 1622 1623 return 0; 1624 1625 err_init_fw: 1626 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__); 1627 if (adapter->if_ops.unregister_dev) 1628 adapter->if_ops.unregister_dev(adapter); 1629 1630 err_kmalloc: 1631 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 1632 mwifiex_terminate_workqueue(adapter); 1633 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { 1634 mwifiex_dbg(adapter, ERROR, 1635 "info: %s: shutdown mwifiex\n", __func__); 1636 mwifiex_shutdown_drv(adapter); 1637 mwifiex_free_cmd_buffers(adapter); 1638 } 1639 1640 complete_all(adapter->fw_done); 1641 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__); 1642 1643 return -1; 1644 } 1645 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw); 1646 1647 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv) 1648 { 1649 struct mwifiex_adapter *adapter = priv; 1650 1651 dev_dbg(adapter->dev, "%s: wake by wifi", __func__); 1652 adapter->wake_by_wifi = true; 1653 disable_irq_nosync(irq); 1654 1655 /* Notify PM core we are wakeup source */ 1656 pm_wakeup_event(adapter->dev, 0); 1657 pm_system_wakeup(); 1658 1659 return IRQ_HANDLED; 1660 } 1661 1662 static void mwifiex_probe_of(struct mwifiex_adapter *adapter) 1663 { 1664 int ret; 1665 struct device *dev = adapter->dev; 1666 1667 if (!dev->of_node) 1668 goto err_exit; 1669 1670 adapter->dt_node = dev->of_node; 1671 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0); 1672 if (!adapter->irq_wakeup) { 1673 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n"); 1674 goto err_exit; 1675 } 1676 1677 ret = devm_request_irq(dev, adapter->irq_wakeup, 1678 mwifiex_irq_wakeup_handler, 1679 IRQF_TRIGGER_LOW | IRQF_NO_AUTOEN, 1680 "wifi_wake", adapter); 1681 if (ret) { 1682 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n", 1683 adapter->irq_wakeup, ret); 1684 goto err_exit; 1685 } 1686 1687 if (device_init_wakeup(dev, true)) { 1688 dev_err(dev, "fail to init wakeup for mwifiex\n"); 1689 goto err_exit; 1690 } 1691 return; 1692 1693 err_exit: 1694 adapter->irq_wakeup = -1; 1695 } 1696 1697 /* 1698 * This function adds the card. 1699 * 1700 * This function follows the following major steps to set up the device - 1701 * - Initialize software. This includes probing the card, registering 1702 * the interface operations table, and allocating/initializing the 1703 * adapter structure 1704 * - Set up the netlink socket 1705 * - Create and start the main work queue 1706 * - Register the device 1707 * - Initialize firmware and hardware 1708 * - Add logical interfaces 1709 */ 1710 int 1711 mwifiex_add_card(void *card, struct completion *fw_done, 1712 const struct mwifiex_if_ops *if_ops, u8 iface_type, 1713 struct device *dev) 1714 { 1715 struct mwifiex_adapter *adapter; 1716 1717 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) { 1718 pr_err("%s: software init failed\n", __func__); 1719 goto err_init_sw; 1720 } 1721 1722 mwifiex_probe_of(adapter); 1723 1724 adapter->iface_type = iface_type; 1725 adapter->fw_done = fw_done; 1726 1727 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 1728 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 1729 init_waitqueue_head(&adapter->init_wait_q); 1730 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags); 1731 adapter->hs_activated = false; 1732 init_waitqueue_head(&adapter->hs_activate_wait_q); 1733 init_waitqueue_head(&adapter->cmd_wait_q.wait); 1734 adapter->cmd_wait_q.status = 0; 1735 adapter->scan_wait_q_woken = false; 1736 1737 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) 1738 adapter->rx_work_enabled = true; 1739 1740 adapter->workqueue = 1741 alloc_workqueue("MWIFIEX_WORK_QUEUE", 1742 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0); 1743 if (!adapter->workqueue) 1744 goto err_kmalloc; 1745 1746 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); 1747 1748 if (adapter->rx_work_enabled) { 1749 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE", 1750 WQ_HIGHPRI | 1751 WQ_MEM_RECLAIM | 1752 WQ_UNBOUND, 0); 1753 if (!adapter->rx_workqueue) 1754 goto err_kmalloc; 1755 1756 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue); 1757 } 1758 1759 /* Register the device. Fill up the private data structure with relevant 1760 information from the card. */ 1761 if (adapter->if_ops.register_dev(adapter)) { 1762 pr_err("%s: failed to register mwifiex device\n", __func__); 1763 goto err_registerdev; 1764 } 1765 1766 if (adapter->host_mlme_enabled) { 1767 adapter->host_mlme_workqueue = 1768 alloc_workqueue("MWIFIEX_HOST_MLME_WORK_QUEUE", 1769 WQ_HIGHPRI | 1770 WQ_MEM_RECLAIM | 1771 WQ_UNBOUND, 0); 1772 if (!adapter->host_mlme_workqueue) 1773 goto err_kmalloc; 1774 INIT_WORK(&adapter->host_mlme_work, 1775 mwifiex_host_mlme_work_queue); 1776 } 1777 1778 if (mwifiex_init_hw_fw(adapter, true)) { 1779 pr_err("%s: firmware init failed\n", __func__); 1780 goto err_init_fw; 1781 } 1782 1783 return 0; 1784 1785 err_init_fw: 1786 pr_debug("info: %s: unregister device\n", __func__); 1787 if (adapter->if_ops.unregister_dev) 1788 adapter->if_ops.unregister_dev(adapter); 1789 err_registerdev: 1790 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 1791 mwifiex_terminate_workqueue(adapter); 1792 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { 1793 pr_debug("info: %s: shutdown mwifiex\n", __func__); 1794 mwifiex_shutdown_drv(adapter); 1795 mwifiex_free_cmd_buffers(adapter); 1796 } 1797 err_kmalloc: 1798 if (adapter->irq_wakeup >= 0) 1799 device_init_wakeup(adapter->dev, false); 1800 mwifiex_free_adapter(adapter); 1801 1802 err_init_sw: 1803 1804 return -1; 1805 } 1806 EXPORT_SYMBOL_GPL(mwifiex_add_card); 1807 1808 /* 1809 * This function removes the card. 1810 * 1811 * This function follows the following major steps to remove the device - 1812 * - Stop data traffic 1813 * - Shutdown firmware 1814 * - Remove the logical interfaces 1815 * - Terminate the work queue 1816 * - Unregister the device 1817 * - Free the adapter structure 1818 */ 1819 int mwifiex_remove_card(struct mwifiex_adapter *adapter) 1820 { 1821 if (!adapter) 1822 return 0; 1823 1824 if (adapter->is_up) 1825 mwifiex_uninit_sw(adapter); 1826 1827 if (adapter->irq_wakeup >= 0) 1828 device_init_wakeup(adapter->dev, false); 1829 1830 /* Unregister device */ 1831 mwifiex_dbg(adapter, INFO, 1832 "info: unregister device\n"); 1833 if (adapter->if_ops.unregister_dev) 1834 adapter->if_ops.unregister_dev(adapter); 1835 /* Free adapter structure */ 1836 mwifiex_dbg(adapter, INFO, 1837 "info: free adapter\n"); 1838 mwifiex_free_adapter(adapter); 1839 1840 return 0; 1841 } 1842 EXPORT_SYMBOL_GPL(mwifiex_remove_card); 1843 1844 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask, 1845 const char *fmt, ...) 1846 { 1847 struct va_format vaf; 1848 va_list args; 1849 1850 if (!(adapter->debug_mask & mask)) 1851 return; 1852 1853 va_start(args, fmt); 1854 1855 vaf.fmt = fmt; 1856 vaf.va = &args; 1857 1858 if (adapter->dev) 1859 dev_info(adapter->dev, "%pV", &vaf); 1860 else 1861 pr_info("%pV", &vaf); 1862 1863 va_end(args); 1864 } 1865 EXPORT_SYMBOL_GPL(_mwifiex_dbg); 1866 1867 /* 1868 * This function initializes the module. 1869 * 1870 * The debug FS is also initialized if configured. 1871 */ 1872 static int 1873 mwifiex_init_module(void) 1874 { 1875 #ifdef CONFIG_DEBUG_FS 1876 mwifiex_debugfs_init(); 1877 #endif 1878 return 0; 1879 } 1880 1881 /* 1882 * This function cleans up the module. 1883 * 1884 * The debug FS is removed if available. 1885 */ 1886 static void 1887 mwifiex_cleanup_module(void) 1888 { 1889 #ifdef CONFIG_DEBUG_FS 1890 mwifiex_debugfs_remove(); 1891 #endif 1892 } 1893 1894 module_init(mwifiex_init_module); 1895 module_exit(mwifiex_cleanup_module); 1896 1897 MODULE_AUTHOR("Marvell International Ltd."); 1898 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION); 1899 MODULE_VERSION(VERSION); 1900 MODULE_LICENSE("GPL v2"); 1901