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