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 30 static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK; 31 module_param(debug_mask, uint, 0); 32 MODULE_PARM_DESC(debug_mask, "bitmap for debug flags"); 33 34 const char driver_version[] = "mwifiex " VERSION " (%s) "; 35 static char *cal_data_cfg; 36 module_param(cal_data_cfg, charp, 0); 37 38 static unsigned short driver_mode; 39 module_param(driver_mode, ushort, 0); 40 MODULE_PARM_DESC(driver_mode, 41 "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7"); 42 43 bool mfg_mode; 44 module_param(mfg_mode, bool, 0); 45 MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0"); 46 47 bool aggr_ctrl; 48 module_param(aggr_ctrl, bool, 0000); 49 MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0"); 50 51 const 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 */ 68 static 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; 108 109 error: 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 */ 131 static 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 } 160 161 void 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 } 174 EXPORT_SYMBOL_GPL(mwifiex_queue_main_work); 175 176 static 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 } 186 187 static 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); 224 225 exit_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 */ 244 int 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 } 260 process_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 } 475 EXPORT_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 */ 483 static 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 */ 498 static 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 */ 520 static 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 wiphy_lock(adapter->wiphy); 602 /* Create station interface by default */ 603 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM, 604 NL80211_IFTYPE_STATION, NULL); 605 if (IS_ERR(wdev)) { 606 mwifiex_dbg(adapter, ERROR, 607 "cannot create default STA interface\n"); 608 wiphy_unlock(adapter->wiphy); 609 rtnl_unlock(); 610 goto err_add_intf; 611 } 612 613 if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) { 614 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM, 615 NL80211_IFTYPE_AP, NULL); 616 if (IS_ERR(wdev)) { 617 mwifiex_dbg(adapter, ERROR, 618 "cannot create AP interface\n"); 619 wiphy_unlock(adapter->wiphy); 620 rtnl_unlock(); 621 goto err_add_intf; 622 } 623 } 624 625 if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) { 626 wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM, 627 NL80211_IFTYPE_P2P_CLIENT, NULL); 628 if (IS_ERR(wdev)) { 629 mwifiex_dbg(adapter, ERROR, 630 "cannot create p2p client interface\n"); 631 wiphy_unlock(adapter->wiphy); 632 rtnl_unlock(); 633 goto err_add_intf; 634 } 635 } 636 wiphy_unlock(adapter->wiphy); 637 rtnl_unlock(); 638 639 mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); 640 mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt); 641 adapter->is_up = true; 642 goto done; 643 644 err_add_intf: 645 vfree(adapter->chan_stats); 646 err_init_chan_scan: 647 wiphy_unregister(adapter->wiphy); 648 wiphy_free(adapter->wiphy); 649 err_init_fw: 650 if (adapter->if_ops.disable_int) 651 adapter->if_ops.disable_int(adapter); 652 err_dnld_fw: 653 mwifiex_dbg(adapter, ERROR, 654 "info: %s: unregister device\n", __func__); 655 if (adapter->if_ops.unregister_dev) 656 adapter->if_ops.unregister_dev(adapter); 657 658 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 659 mwifiex_terminate_workqueue(adapter); 660 661 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { 662 pr_debug("info: %s: shutdown mwifiex\n", __func__); 663 mwifiex_shutdown_drv(adapter); 664 mwifiex_free_cmd_buffers(adapter); 665 } 666 667 init_failed = true; 668 done: 669 if (adapter->cal_data) { 670 release_firmware(adapter->cal_data); 671 adapter->cal_data = NULL; 672 } 673 if (adapter->firmware) { 674 release_firmware(adapter->firmware); 675 adapter->firmware = NULL; 676 } 677 if (init_failed) { 678 if (adapter->irq_wakeup >= 0) 679 device_init_wakeup(adapter->dev, false); 680 mwifiex_free_adapter(adapter); 681 } 682 /* Tell all current and future waiters we're finished */ 683 complete_all(fw_done); 684 685 return init_failed ? -EIO : 0; 686 } 687 688 static void mwifiex_fw_dpc(const struct firmware *firmware, void *context) 689 { 690 _mwifiex_fw_dpc(firmware, context); 691 } 692 693 /* 694 * This function gets the firmware and (if called asynchronously) kicks off the 695 * HW init when done. 696 */ 697 static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter, 698 bool req_fw_nowait) 699 { 700 int ret; 701 702 /* Override default firmware with manufacturing one if 703 * manufacturing mode is enabled 704 */ 705 if (mfg_mode) { 706 if (strlcpy(adapter->fw_name, MFG_FIRMWARE, 707 sizeof(adapter->fw_name)) >= 708 sizeof(adapter->fw_name)) { 709 pr_err("%s: fw_name too long!\n", __func__); 710 return -1; 711 } 712 } 713 714 if (req_fw_nowait) { 715 ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name, 716 adapter->dev, GFP_KERNEL, adapter, 717 mwifiex_fw_dpc); 718 } else { 719 ret = request_firmware(&adapter->firmware, 720 adapter->fw_name, 721 adapter->dev); 722 } 723 724 if (ret < 0) 725 mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n", 726 req_fw_nowait ? "_nowait" : "", ret); 727 return ret; 728 } 729 730 /* 731 * CFG802.11 network device handler for open. 732 * 733 * Starts the data queue. 734 */ 735 static int 736 mwifiex_open(struct net_device *dev) 737 { 738 netif_carrier_off(dev); 739 740 return 0; 741 } 742 743 /* 744 * CFG802.11 network device handler for close. 745 */ 746 static int 747 mwifiex_close(struct net_device *dev) 748 { 749 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 750 751 if (priv->scan_request) { 752 struct cfg80211_scan_info info = { 753 .aborted = true, 754 }; 755 756 mwifiex_dbg(priv->adapter, INFO, 757 "aborting scan on ndo_stop\n"); 758 cfg80211_scan_done(priv->scan_request, &info); 759 priv->scan_request = NULL; 760 priv->scan_aborting = true; 761 } 762 763 if (priv->sched_scanning) { 764 mwifiex_dbg(priv->adapter, INFO, 765 "aborting bgscan on ndo_stop\n"); 766 mwifiex_stop_bg_scan(priv); 767 cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0); 768 } 769 770 return 0; 771 } 772 773 static bool 774 mwifiex_bypass_tx_queue(struct mwifiex_private *priv, 775 struct sk_buff *skb) 776 { 777 struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; 778 779 if (ntohs(eth_hdr->h_proto) == ETH_P_PAE || 780 mwifiex_is_skb_mgmt_frame(skb) || 781 (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA && 782 ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && 783 (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) { 784 mwifiex_dbg(priv->adapter, DATA, 785 "bypass txqueue; eth type %#x, mgmt %d\n", 786 ntohs(eth_hdr->h_proto), 787 mwifiex_is_skb_mgmt_frame(skb)); 788 return true; 789 } 790 791 return false; 792 } 793 /* 794 * Add buffer into wmm tx queue and queue work to transmit it. 795 */ 796 int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb) 797 { 798 struct netdev_queue *txq; 799 int index = mwifiex_1d_to_wmm_queue[skb->priority]; 800 801 if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) { 802 txq = netdev_get_tx_queue(priv->netdev, index); 803 if (!netif_tx_queue_stopped(txq)) { 804 netif_tx_stop_queue(txq); 805 mwifiex_dbg(priv->adapter, DATA, 806 "stop queue: %d\n", index); 807 } 808 } 809 810 if (mwifiex_bypass_tx_queue(priv, skb)) { 811 atomic_inc(&priv->adapter->tx_pending); 812 atomic_inc(&priv->adapter->bypass_tx_pending); 813 mwifiex_wmm_add_buf_bypass_txqueue(priv, skb); 814 } else { 815 atomic_inc(&priv->adapter->tx_pending); 816 mwifiex_wmm_add_buf_txqueue(priv, skb); 817 } 818 819 mwifiex_queue_main_work(priv->adapter); 820 821 return 0; 822 } 823 824 struct sk_buff * 825 mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv, 826 struct sk_buff *skb, u8 flag, u64 *cookie) 827 { 828 struct sk_buff *orig_skb = skb; 829 struct mwifiex_txinfo *tx_info, *orig_tx_info; 830 831 skb = skb_clone(skb, GFP_ATOMIC); 832 if (skb) { 833 int id; 834 835 spin_lock_bh(&priv->ack_status_lock); 836 id = idr_alloc(&priv->ack_status_frames, orig_skb, 837 1, 0x10, GFP_ATOMIC); 838 spin_unlock_bh(&priv->ack_status_lock); 839 840 if (id >= 0) { 841 tx_info = MWIFIEX_SKB_TXCB(skb); 842 tx_info->ack_frame_id = id; 843 tx_info->flags |= flag; 844 orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb); 845 orig_tx_info->ack_frame_id = id; 846 orig_tx_info->flags |= flag; 847 848 if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie) 849 orig_tx_info->cookie = *cookie; 850 851 } else if (skb_shared(skb)) { 852 kfree_skb(orig_skb); 853 } else { 854 kfree_skb(skb); 855 skb = orig_skb; 856 } 857 } else { 858 /* couldn't clone -- lose tx status ... */ 859 skb = orig_skb; 860 } 861 862 return skb; 863 } 864 865 /* 866 * CFG802.11 network device handler for data transmission. 867 */ 868 static netdev_tx_t 869 mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 870 { 871 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 872 struct sk_buff *new_skb; 873 struct mwifiex_txinfo *tx_info; 874 bool multicast; 875 876 mwifiex_dbg(priv->adapter, DATA, 877 "data: %lu BSS(%d-%d): Data <= kernel\n", 878 jiffies, priv->bss_type, priv->bss_num); 879 880 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) { 881 kfree_skb(skb); 882 priv->stats.tx_dropped++; 883 return 0; 884 } 885 if (!skb->len || (skb->len > ETH_FRAME_LEN)) { 886 mwifiex_dbg(priv->adapter, ERROR, 887 "Tx: bad skb len %d\n", skb->len); 888 kfree_skb(skb); 889 priv->stats.tx_dropped++; 890 return 0; 891 } 892 if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) { 893 mwifiex_dbg(priv->adapter, DATA, 894 "data: Tx: insufficient skb headroom %d\n", 895 skb_headroom(skb)); 896 /* Insufficient skb headroom - allocate a new skb */ 897 new_skb = 898 skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN); 899 if (unlikely(!new_skb)) { 900 mwifiex_dbg(priv->adapter, ERROR, 901 "Tx: cannot alloca new_skb\n"); 902 kfree_skb(skb); 903 priv->stats.tx_dropped++; 904 return 0; 905 } 906 kfree_skb(skb); 907 skb = new_skb; 908 mwifiex_dbg(priv->adapter, INFO, 909 "info: new skb headroomd %d\n", 910 skb_headroom(skb)); 911 } 912 913 tx_info = MWIFIEX_SKB_TXCB(skb); 914 memset(tx_info, 0, sizeof(*tx_info)); 915 tx_info->bss_num = priv->bss_num; 916 tx_info->bss_type = priv->bss_type; 917 tx_info->pkt_len = skb->len; 918 919 multicast = is_multicast_ether_addr(skb->data); 920 921 if (unlikely(!multicast && skb->sk && 922 skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS && 923 priv->adapter->fw_api_ver == MWIFIEX_FW_V15)) 924 skb = mwifiex_clone_skb_for_tx_status(priv, 925 skb, 926 MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL); 927 928 /* Record the current time the packet was queued; used to 929 * determine the amount of time the packet was queued in 930 * the driver before it was sent to the firmware. 931 * The delay is then sent along with the packet to the 932 * firmware for aggregate delay calculation for stats and 933 * MSDU lifetime expiry. 934 */ 935 __net_timestamp(skb); 936 937 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && 938 priv->bss_type == MWIFIEX_BSS_TYPE_STA && 939 !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) { 940 if (priv->adapter->auto_tdls && priv->check_tdls_tx) 941 mwifiex_tdls_check_tx(priv, skb); 942 } 943 944 mwifiex_queue_tx_pkt(priv, skb); 945 946 return 0; 947 } 948 949 int mwifiex_set_mac_address(struct mwifiex_private *priv, 950 struct net_device *dev, bool external, 951 u8 *new_mac) 952 { 953 int ret; 954 u64 mac_addr, old_mac_addr; 955 956 old_mac_addr = ether_addr_to_u64(priv->curr_addr); 957 958 if (external) { 959 mac_addr = ether_addr_to_u64(new_mac); 960 } else { 961 /* Internal mac address change */ 962 if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY) 963 return -EOPNOTSUPP; 964 965 mac_addr = old_mac_addr; 966 967 if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) { 968 mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT); 969 mac_addr += priv->bss_num; 970 } else if (priv->adapter->priv[0] != priv) { 971 /* Set mac address based on bss_type/bss_num */ 972 mac_addr ^= BIT_ULL(priv->bss_type + 8); 973 mac_addr += priv->bss_num; 974 } 975 } 976 977 u64_to_ether_addr(mac_addr, priv->curr_addr); 978 979 /* Send request to firmware */ 980 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS, 981 HostCmd_ACT_GEN_SET, 0, NULL, true); 982 983 if (ret) { 984 u64_to_ether_addr(old_mac_addr, priv->curr_addr); 985 mwifiex_dbg(priv->adapter, ERROR, 986 "set mac address failed: ret=%d\n", ret); 987 return ret; 988 } 989 990 ether_addr_copy(dev->dev_addr, priv->curr_addr); 991 return 0; 992 } 993 994 /* CFG802.11 network device handler for setting MAC address. 995 */ 996 static int 997 mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr) 998 { 999 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 1000 struct sockaddr *hw_addr = addr; 1001 1002 return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data); 1003 } 1004 1005 /* 1006 * CFG802.11 network device handler for setting multicast list. 1007 */ 1008 static void mwifiex_set_multicast_list(struct net_device *dev) 1009 { 1010 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 1011 struct mwifiex_multicast_list mcast_list; 1012 1013 if (dev->flags & IFF_PROMISC) { 1014 mcast_list.mode = MWIFIEX_PROMISC_MODE; 1015 } else if (dev->flags & IFF_ALLMULTI || 1016 netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) { 1017 mcast_list.mode = MWIFIEX_ALL_MULTI_MODE; 1018 } else { 1019 mcast_list.mode = MWIFIEX_MULTICAST_MODE; 1020 mcast_list.num_multicast_addr = 1021 mwifiex_copy_mcast_addr(&mcast_list, dev); 1022 } 1023 mwifiex_request_set_multicast_list(priv, &mcast_list); 1024 } 1025 1026 /* 1027 * CFG802.11 network device handler for transmission timeout. 1028 */ 1029 static void 1030 mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue) 1031 { 1032 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 1033 1034 priv->num_tx_timeout++; 1035 priv->tx_timeout_cnt++; 1036 mwifiex_dbg(priv->adapter, ERROR, 1037 "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n", 1038 jiffies, priv->tx_timeout_cnt, priv->bss_type, 1039 priv->bss_num); 1040 mwifiex_set_trans_start(dev); 1041 1042 if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD && 1043 priv->adapter->if_ops.card_reset) { 1044 mwifiex_dbg(priv->adapter, ERROR, 1045 "tx_timeout_cnt exceeds threshold.\t" 1046 "Triggering card reset!\n"); 1047 priv->adapter->if_ops.card_reset(priv->adapter); 1048 } 1049 } 1050 1051 void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter) 1052 { 1053 struct usb_card_rec *card = adapter->card; 1054 struct mwifiex_private *priv; 1055 u16 tx_buf_size; 1056 int i, ret; 1057 1058 card->mc_resync_flag = true; 1059 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 1060 if (atomic_read(&card->port[i].tx_data_urb_pending)) { 1061 mwifiex_dbg(adapter, WARN, "pending data urb in sys\n"); 1062 return; 1063 } 1064 } 1065 1066 card->mc_resync_flag = false; 1067 tx_buf_size = 0xffff; 1068 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 1069 ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF, 1070 HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false); 1071 if (ret) 1072 mwifiex_dbg(adapter, ERROR, 1073 "send reconfig tx buf size cmd err\n"); 1074 } 1075 EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync); 1076 1077 void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter) 1078 { 1079 /* Dump all the memory data into single file, a userspace script will 1080 * be used to split all the memory data to multiple files 1081 */ 1082 mwifiex_dbg(adapter, MSG, 1083 "== mwifiex dump information to /sys/class/devcoredump start\n"); 1084 dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len, 1085 GFP_KERNEL); 1086 mwifiex_dbg(adapter, MSG, 1087 "== mwifiex dump information to /sys/class/devcoredump end\n"); 1088 1089 /* Device dump data will be freed in device coredump release function 1090 * after 5 min. Here reset adapter->devdump_data and ->devdump_len 1091 * to avoid it been accidentally reused. 1092 */ 1093 adapter->devdump_data = NULL; 1094 adapter->devdump_len = 0; 1095 } 1096 EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump); 1097 1098 void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter) 1099 { 1100 char *p; 1101 char drv_version[64]; 1102 struct usb_card_rec *cardp; 1103 struct sdio_mmc_card *sdio_card; 1104 struct mwifiex_private *priv; 1105 int i, idx; 1106 struct netdev_queue *txq; 1107 struct mwifiex_debug_info *debug_info; 1108 1109 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n"); 1110 1111 p = adapter->devdump_data; 1112 strcpy(p, "========Start dump driverinfo========\n"); 1113 p += strlen("========Start dump driverinfo========\n"); 1114 p += sprintf(p, "driver_name = " "\"mwifiex\"\n"); 1115 1116 mwifiex_drv_get_driver_version(adapter, drv_version, 1117 sizeof(drv_version) - 1); 1118 p += sprintf(p, "driver_version = %s\n", drv_version); 1119 1120 if (adapter->iface_type == MWIFIEX_USB) { 1121 cardp = (struct usb_card_rec *)adapter->card; 1122 p += sprintf(p, "tx_cmd_urb_pending = %d\n", 1123 atomic_read(&cardp->tx_cmd_urb_pending)); 1124 p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n", 1125 atomic_read(&cardp->port[0].tx_data_urb_pending)); 1126 p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n", 1127 atomic_read(&cardp->port[1].tx_data_urb_pending)); 1128 p += sprintf(p, "rx_cmd_urb_pending = %d\n", 1129 atomic_read(&cardp->rx_cmd_urb_pending)); 1130 p += sprintf(p, "rx_data_urb_pending = %d\n", 1131 atomic_read(&cardp->rx_data_urb_pending)); 1132 } 1133 1134 p += sprintf(p, "tx_pending = %d\n", 1135 atomic_read(&adapter->tx_pending)); 1136 p += sprintf(p, "rx_pending = %d\n", 1137 atomic_read(&adapter->rx_pending)); 1138 1139 if (adapter->iface_type == MWIFIEX_SDIO) { 1140 sdio_card = (struct sdio_mmc_card *)adapter->card; 1141 p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n", 1142 sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port); 1143 p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n", 1144 sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port); 1145 } 1146 1147 for (i = 0; i < adapter->priv_num; i++) { 1148 if (!adapter->priv[i] || !adapter->priv[i]->netdev) 1149 continue; 1150 priv = adapter->priv[i]; 1151 p += sprintf(p, "\n[interface : \"%s\"]\n", 1152 priv->netdev->name); 1153 p += sprintf(p, "wmm_tx_pending[0] = %d\n", 1154 atomic_read(&priv->wmm_tx_pending[0])); 1155 p += sprintf(p, "wmm_tx_pending[1] = %d\n", 1156 atomic_read(&priv->wmm_tx_pending[1])); 1157 p += sprintf(p, "wmm_tx_pending[2] = %d\n", 1158 atomic_read(&priv->wmm_tx_pending[2])); 1159 p += sprintf(p, "wmm_tx_pending[3] = %d\n", 1160 atomic_read(&priv->wmm_tx_pending[3])); 1161 p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ? 1162 "Disconnected" : "Connected"); 1163 p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev) 1164 ? "on" : "off")); 1165 for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) { 1166 txq = netdev_get_tx_queue(priv->netdev, idx); 1167 p += sprintf(p, "tx queue %d:%s ", idx, 1168 netif_tx_queue_stopped(txq) ? 1169 "stopped" : "started"); 1170 } 1171 p += sprintf(p, "\n%s: num_tx_timeout = %d\n", 1172 priv->netdev->name, priv->num_tx_timeout); 1173 } 1174 1175 if (adapter->iface_type == MWIFIEX_SDIO || 1176 adapter->iface_type == MWIFIEX_PCIE) { 1177 p += sprintf(p, "\n=== %s register dump===\n", 1178 adapter->iface_type == MWIFIEX_SDIO ? 1179 "SDIO" : "PCIE"); 1180 if (adapter->if_ops.reg_dump) 1181 p += adapter->if_ops.reg_dump(adapter, p); 1182 } 1183 p += sprintf(p, "\n=== more debug information\n"); 1184 debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL); 1185 if (debug_info) { 1186 for (i = 0; i < adapter->priv_num; i++) { 1187 if (!adapter->priv[i] || !adapter->priv[i]->netdev) 1188 continue; 1189 priv = adapter->priv[i]; 1190 mwifiex_get_debug_info(priv, debug_info); 1191 p += mwifiex_debug_info_to_buffer(priv, p, debug_info); 1192 break; 1193 } 1194 kfree(debug_info); 1195 } 1196 1197 strcpy(p, "\n========End dump========\n"); 1198 p += strlen("\n========End dump========\n"); 1199 mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n"); 1200 adapter->devdump_len = p - (char *)adapter->devdump_data; 1201 } 1202 EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump); 1203 1204 void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter) 1205 { 1206 u8 idx; 1207 char *fw_dump_ptr; 1208 u32 dump_len = 0; 1209 1210 for (idx = 0; idx < adapter->num_mem_types; idx++) { 1211 struct memory_type_mapping *entry = 1212 &adapter->mem_type_mapping_tbl[idx]; 1213 1214 if (entry->mem_ptr) { 1215 dump_len += (strlen("========Start dump ") + 1216 strlen(entry->mem_name) + 1217 strlen("========\n") + 1218 (entry->mem_size + 1) + 1219 strlen("\n========End dump========\n")); 1220 } 1221 } 1222 1223 if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) { 1224 /* Realloc in case buffer overflow */ 1225 fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len); 1226 mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n"); 1227 if (!fw_dump_ptr) { 1228 vfree(adapter->devdump_data); 1229 mwifiex_dbg(adapter, ERROR, 1230 "vzalloc devdump data failure!\n"); 1231 return; 1232 } 1233 1234 memmove(fw_dump_ptr, adapter->devdump_data, 1235 adapter->devdump_len); 1236 vfree(adapter->devdump_data); 1237 adapter->devdump_data = fw_dump_ptr; 1238 } 1239 1240 fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len; 1241 1242 for (idx = 0; idx < adapter->num_mem_types; idx++) { 1243 struct memory_type_mapping *entry = 1244 &adapter->mem_type_mapping_tbl[idx]; 1245 1246 if (entry->mem_ptr) { 1247 strcpy(fw_dump_ptr, "========Start dump "); 1248 fw_dump_ptr += strlen("========Start dump "); 1249 1250 strcpy(fw_dump_ptr, entry->mem_name); 1251 fw_dump_ptr += strlen(entry->mem_name); 1252 1253 strcpy(fw_dump_ptr, "========\n"); 1254 fw_dump_ptr += strlen("========\n"); 1255 1256 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size); 1257 fw_dump_ptr += entry->mem_size; 1258 1259 strcpy(fw_dump_ptr, "\n========End dump========\n"); 1260 fw_dump_ptr += strlen("\n========End dump========\n"); 1261 } 1262 } 1263 1264 adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data; 1265 1266 for (idx = 0; idx < adapter->num_mem_types; idx++) { 1267 struct memory_type_mapping *entry = 1268 &adapter->mem_type_mapping_tbl[idx]; 1269 1270 vfree(entry->mem_ptr); 1271 entry->mem_ptr = NULL; 1272 entry->mem_size = 0; 1273 } 1274 } 1275 EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info); 1276 1277 /* 1278 * CFG802.11 network device handler for statistics retrieval. 1279 */ 1280 static struct net_device_stats *mwifiex_get_stats(struct net_device *dev) 1281 { 1282 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); 1283 1284 return &priv->stats; 1285 } 1286 1287 static u16 1288 mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb, 1289 struct net_device *sb_dev) 1290 { 1291 skb->priority = cfg80211_classify8021d(skb, NULL); 1292 return mwifiex_1d_to_wmm_queue[skb->priority]; 1293 } 1294 1295 /* Network device handlers */ 1296 static const struct net_device_ops mwifiex_netdev_ops = { 1297 .ndo_open = mwifiex_open, 1298 .ndo_stop = mwifiex_close, 1299 .ndo_start_xmit = mwifiex_hard_start_xmit, 1300 .ndo_set_mac_address = mwifiex_ndo_set_mac_address, 1301 .ndo_validate_addr = eth_validate_addr, 1302 .ndo_tx_timeout = mwifiex_tx_timeout, 1303 .ndo_get_stats = mwifiex_get_stats, 1304 .ndo_set_rx_mode = mwifiex_set_multicast_list, 1305 .ndo_select_queue = mwifiex_netdev_select_wmm_queue, 1306 }; 1307 1308 /* 1309 * This function initializes the private structure parameters. 1310 * 1311 * The following wait queues are initialized - 1312 * - IOCTL wait queue 1313 * - Command wait queue 1314 * - Statistics wait queue 1315 * 1316 * ...and the following default parameters are set - 1317 * - Current key index : Set to 0 1318 * - Rate index : Set to auto 1319 * - Media connected : Set to disconnected 1320 * - Adhoc link sensed : Set to false 1321 * - Nick name : Set to null 1322 * - Number of Tx timeout : Set to 0 1323 * - Device address : Set to current address 1324 * - Rx histogram statistc : Set to 0 1325 * 1326 * In addition, the CFG80211 work queue is also created. 1327 */ 1328 void mwifiex_init_priv_params(struct mwifiex_private *priv, 1329 struct net_device *dev) 1330 { 1331 dev->netdev_ops = &mwifiex_netdev_ops; 1332 dev->needs_free_netdev = true; 1333 /* Initialize private structure */ 1334 priv->current_key_index = 0; 1335 priv->media_connected = false; 1336 memset(priv->mgmt_ie, 0, 1337 sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX); 1338 priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK; 1339 priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK; 1340 priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK; 1341 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK; 1342 priv->num_tx_timeout = 0; 1343 if (is_valid_ether_addr(dev->dev_addr)) 1344 ether_addr_copy(priv->curr_addr, dev->dev_addr); 1345 else 1346 ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr); 1347 1348 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA || 1349 GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { 1350 priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL); 1351 if (priv->hist_data) 1352 mwifiex_hist_data_reset(priv); 1353 } 1354 } 1355 1356 /* 1357 * This function check if command is pending. 1358 */ 1359 int is_command_pending(struct mwifiex_adapter *adapter) 1360 { 1361 int is_cmd_pend_q_empty; 1362 1363 spin_lock_bh(&adapter->cmd_pending_q_lock); 1364 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 1365 spin_unlock_bh(&adapter->cmd_pending_q_lock); 1366 1367 return !is_cmd_pend_q_empty; 1368 } 1369 1370 /* 1371 * This is the RX work queue function. 1372 * 1373 * It handles the RX operations. 1374 */ 1375 static void mwifiex_rx_work_queue(struct work_struct *work) 1376 { 1377 struct mwifiex_adapter *adapter = 1378 container_of(work, struct mwifiex_adapter, rx_work); 1379 1380 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags)) 1381 return; 1382 mwifiex_process_rx(adapter); 1383 } 1384 1385 /* 1386 * This is the main work queue function. 1387 * 1388 * It handles the main process, which in turn handles the complete 1389 * driver operations. 1390 */ 1391 static void mwifiex_main_work_queue(struct work_struct *work) 1392 { 1393 struct mwifiex_adapter *adapter = 1394 container_of(work, struct mwifiex_adapter, main_work); 1395 1396 if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags)) 1397 return; 1398 mwifiex_main_process(adapter); 1399 } 1400 1401 /* Common teardown code used for both device removal and reset */ 1402 static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter) 1403 { 1404 struct mwifiex_private *priv; 1405 int i; 1406 1407 /* We can no longer handle interrupts once we start doing the teardown 1408 * below. 1409 */ 1410 if (adapter->if_ops.disable_int) 1411 adapter->if_ops.disable_int(adapter); 1412 1413 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 1414 mwifiex_terminate_workqueue(adapter); 1415 adapter->int_status = 0; 1416 1417 /* Stop data */ 1418 for (i = 0; i < adapter->priv_num; i++) { 1419 priv = adapter->priv[i]; 1420 if (priv && priv->netdev) { 1421 mwifiex_stop_net_dev_queue(priv->netdev, adapter); 1422 if (netif_carrier_ok(priv->netdev)) 1423 netif_carrier_off(priv->netdev); 1424 netif_device_detach(priv->netdev); 1425 } 1426 } 1427 1428 mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n"); 1429 mwifiex_shutdown_drv(adapter); 1430 mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n"); 1431 1432 if (atomic_read(&adapter->rx_pending) || 1433 atomic_read(&adapter->tx_pending) || 1434 atomic_read(&adapter->cmd_pending)) { 1435 mwifiex_dbg(adapter, ERROR, 1436 "rx_pending=%d, tx_pending=%d,\t" 1437 "cmd_pending=%d\n", 1438 atomic_read(&adapter->rx_pending), 1439 atomic_read(&adapter->tx_pending), 1440 atomic_read(&adapter->cmd_pending)); 1441 } 1442 1443 for (i = 0; i < adapter->priv_num; i++) { 1444 priv = adapter->priv[i]; 1445 if (!priv) 1446 continue; 1447 rtnl_lock(); 1448 if (priv->netdev && 1449 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) { 1450 /* 1451 * Close the netdev now, because if we do it later, the 1452 * netdev notifiers will need to acquire the wiphy lock 1453 * again --> deadlock. 1454 */ 1455 dev_close(priv->wdev.netdev); 1456 wiphy_lock(adapter->wiphy); 1457 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev); 1458 wiphy_unlock(adapter->wiphy); 1459 } 1460 rtnl_unlock(); 1461 } 1462 1463 wiphy_unregister(adapter->wiphy); 1464 wiphy_free(adapter->wiphy); 1465 adapter->wiphy = NULL; 1466 1467 vfree(adapter->chan_stats); 1468 mwifiex_free_cmd_buffers(adapter); 1469 } 1470 1471 /* 1472 * This function can be used for shutting down the adapter SW. 1473 */ 1474 int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter) 1475 { 1476 struct mwifiex_private *priv; 1477 1478 if (!adapter) 1479 return 0; 1480 1481 wait_for_completion(adapter->fw_done); 1482 /* Caller should ensure we aren't suspending while this happens */ 1483 reinit_completion(adapter->fw_done); 1484 1485 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 1486 mwifiex_deauthenticate(priv, NULL); 1487 1488 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN); 1489 1490 mwifiex_uninit_sw(adapter); 1491 adapter->is_up = false; 1492 1493 if (adapter->if_ops.down_dev) 1494 adapter->if_ops.down_dev(adapter); 1495 1496 return 0; 1497 } 1498 EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw); 1499 1500 /* This function can be used for reinitting the adapter SW. Required 1501 * code is extracted from mwifiex_add_card() 1502 */ 1503 int 1504 mwifiex_reinit_sw(struct mwifiex_adapter *adapter) 1505 { 1506 int ret; 1507 1508 mwifiex_init_lock_list(adapter); 1509 if (adapter->if_ops.up_dev) 1510 adapter->if_ops.up_dev(adapter); 1511 1512 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 1513 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 1514 init_waitqueue_head(&adapter->init_wait_q); 1515 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags); 1516 adapter->hs_activated = false; 1517 clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags); 1518 init_waitqueue_head(&adapter->hs_activate_wait_q); 1519 init_waitqueue_head(&adapter->cmd_wait_q.wait); 1520 adapter->cmd_wait_q.status = 0; 1521 adapter->scan_wait_q_woken = false; 1522 1523 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) 1524 adapter->rx_work_enabled = true; 1525 1526 adapter->workqueue = 1527 alloc_workqueue("MWIFIEX_WORK_QUEUE", 1528 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); 1529 if (!adapter->workqueue) 1530 goto err_kmalloc; 1531 1532 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); 1533 1534 if (adapter->rx_work_enabled) { 1535 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE", 1536 WQ_HIGHPRI | 1537 WQ_MEM_RECLAIM | 1538 WQ_UNBOUND, 1); 1539 if (!adapter->rx_workqueue) 1540 goto err_kmalloc; 1541 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue); 1542 } 1543 1544 /* Register the device. Fill up the private data structure with 1545 * relevant information from the card. Some code extracted from 1546 * mwifiex_register_dev() 1547 */ 1548 mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__); 1549 1550 if (mwifiex_init_hw_fw(adapter, false)) { 1551 mwifiex_dbg(adapter, ERROR, 1552 "%s: firmware init failed\n", __func__); 1553 goto err_init_fw; 1554 } 1555 1556 /* _mwifiex_fw_dpc() does its own cleanup */ 1557 ret = _mwifiex_fw_dpc(adapter->firmware, adapter); 1558 if (ret) { 1559 pr_err("Failed to bring up adapter: %d\n", ret); 1560 return ret; 1561 } 1562 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__); 1563 1564 return 0; 1565 1566 err_init_fw: 1567 mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__); 1568 if (adapter->if_ops.unregister_dev) 1569 adapter->if_ops.unregister_dev(adapter); 1570 1571 err_kmalloc: 1572 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 1573 mwifiex_terminate_workqueue(adapter); 1574 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { 1575 mwifiex_dbg(adapter, ERROR, 1576 "info: %s: shutdown mwifiex\n", __func__); 1577 mwifiex_shutdown_drv(adapter); 1578 mwifiex_free_cmd_buffers(adapter); 1579 } 1580 1581 complete_all(adapter->fw_done); 1582 mwifiex_dbg(adapter, INFO, "%s, error\n", __func__); 1583 1584 return -1; 1585 } 1586 EXPORT_SYMBOL_GPL(mwifiex_reinit_sw); 1587 1588 static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv) 1589 { 1590 struct mwifiex_adapter *adapter = priv; 1591 1592 dev_dbg(adapter->dev, "%s: wake by wifi", __func__); 1593 adapter->wake_by_wifi = true; 1594 disable_irq_nosync(irq); 1595 1596 /* Notify PM core we are wakeup source */ 1597 pm_wakeup_event(adapter->dev, 0); 1598 pm_system_wakeup(); 1599 1600 return IRQ_HANDLED; 1601 } 1602 1603 static void mwifiex_probe_of(struct mwifiex_adapter *adapter) 1604 { 1605 int ret; 1606 struct device *dev = adapter->dev; 1607 1608 if (!dev->of_node) 1609 goto err_exit; 1610 1611 adapter->dt_node = dev->of_node; 1612 adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0); 1613 if (!adapter->irq_wakeup) { 1614 dev_dbg(dev, "fail to parse irq_wakeup from device tree\n"); 1615 goto err_exit; 1616 } 1617 1618 ret = devm_request_irq(dev, adapter->irq_wakeup, 1619 mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW, 1620 "wifi_wake", adapter); 1621 if (ret) { 1622 dev_err(dev, "Failed to request irq_wakeup %d (%d)\n", 1623 adapter->irq_wakeup, ret); 1624 goto err_exit; 1625 } 1626 1627 disable_irq(adapter->irq_wakeup); 1628 if (device_init_wakeup(dev, true)) { 1629 dev_err(dev, "fail to init wakeup for mwifiex\n"); 1630 goto err_exit; 1631 } 1632 return; 1633 1634 err_exit: 1635 adapter->irq_wakeup = -1; 1636 } 1637 1638 /* 1639 * This function adds the card. 1640 * 1641 * This function follows the following major steps to set up the device - 1642 * - Initialize software. This includes probing the card, registering 1643 * the interface operations table, and allocating/initializing the 1644 * adapter structure 1645 * - Set up the netlink socket 1646 * - Create and start the main work queue 1647 * - Register the device 1648 * - Initialize firmware and hardware 1649 * - Add logical interfaces 1650 */ 1651 int 1652 mwifiex_add_card(void *card, struct completion *fw_done, 1653 struct mwifiex_if_ops *if_ops, u8 iface_type, 1654 struct device *dev) 1655 { 1656 struct mwifiex_adapter *adapter; 1657 1658 if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) { 1659 pr_err("%s: software init failed\n", __func__); 1660 goto err_init_sw; 1661 } 1662 1663 mwifiex_probe_of(adapter); 1664 1665 adapter->iface_type = iface_type; 1666 adapter->fw_done = fw_done; 1667 1668 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 1669 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 1670 init_waitqueue_head(&adapter->init_wait_q); 1671 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags); 1672 adapter->hs_activated = false; 1673 init_waitqueue_head(&adapter->hs_activate_wait_q); 1674 init_waitqueue_head(&adapter->cmd_wait_q.wait); 1675 adapter->cmd_wait_q.status = 0; 1676 adapter->scan_wait_q_woken = false; 1677 1678 if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) 1679 adapter->rx_work_enabled = true; 1680 1681 adapter->workqueue = 1682 alloc_workqueue("MWIFIEX_WORK_QUEUE", 1683 WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); 1684 if (!adapter->workqueue) 1685 goto err_kmalloc; 1686 1687 INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); 1688 1689 if (adapter->rx_work_enabled) { 1690 adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE", 1691 WQ_HIGHPRI | 1692 WQ_MEM_RECLAIM | 1693 WQ_UNBOUND, 1); 1694 if (!adapter->rx_workqueue) 1695 goto err_kmalloc; 1696 1697 INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue); 1698 } 1699 1700 /* Register the device. Fill up the private data structure with relevant 1701 information from the card. */ 1702 if (adapter->if_ops.register_dev(adapter)) { 1703 pr_err("%s: failed to register mwifiex device\n", __func__); 1704 goto err_registerdev; 1705 } 1706 1707 if (mwifiex_init_hw_fw(adapter, true)) { 1708 pr_err("%s: firmware init failed\n", __func__); 1709 goto err_init_fw; 1710 } 1711 1712 return 0; 1713 1714 err_init_fw: 1715 pr_debug("info: %s: unregister device\n", __func__); 1716 if (adapter->if_ops.unregister_dev) 1717 adapter->if_ops.unregister_dev(adapter); 1718 err_registerdev: 1719 set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 1720 mwifiex_terminate_workqueue(adapter); 1721 if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { 1722 pr_debug("info: %s: shutdown mwifiex\n", __func__); 1723 mwifiex_shutdown_drv(adapter); 1724 mwifiex_free_cmd_buffers(adapter); 1725 } 1726 err_kmalloc: 1727 if (adapter->irq_wakeup >= 0) 1728 device_init_wakeup(adapter->dev, false); 1729 mwifiex_free_adapter(adapter); 1730 1731 err_init_sw: 1732 1733 return -1; 1734 } 1735 EXPORT_SYMBOL_GPL(mwifiex_add_card); 1736 1737 /* 1738 * This function removes the card. 1739 * 1740 * This function follows the following major steps to remove the device - 1741 * - Stop data traffic 1742 * - Shutdown firmware 1743 * - Remove the logical interfaces 1744 * - Terminate the work queue 1745 * - Unregister the device 1746 * - Free the adapter structure 1747 */ 1748 int mwifiex_remove_card(struct mwifiex_adapter *adapter) 1749 { 1750 if (!adapter) 1751 return 0; 1752 1753 if (adapter->is_up) 1754 mwifiex_uninit_sw(adapter); 1755 1756 if (adapter->irq_wakeup >= 0) 1757 device_init_wakeup(adapter->dev, false); 1758 1759 /* Unregister device */ 1760 mwifiex_dbg(adapter, INFO, 1761 "info: unregister device\n"); 1762 if (adapter->if_ops.unregister_dev) 1763 adapter->if_ops.unregister_dev(adapter); 1764 /* Free adapter structure */ 1765 mwifiex_dbg(adapter, INFO, 1766 "info: free adapter\n"); 1767 mwifiex_free_adapter(adapter); 1768 1769 return 0; 1770 } 1771 EXPORT_SYMBOL_GPL(mwifiex_remove_card); 1772 1773 void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask, 1774 const char *fmt, ...) 1775 { 1776 struct va_format vaf; 1777 va_list args; 1778 1779 if (!(adapter->debug_mask & mask)) 1780 return; 1781 1782 va_start(args, fmt); 1783 1784 vaf.fmt = fmt; 1785 vaf.va = &args; 1786 1787 if (adapter->dev) 1788 dev_info(adapter->dev, "%pV", &vaf); 1789 else 1790 pr_info("%pV", &vaf); 1791 1792 va_end(args); 1793 } 1794 EXPORT_SYMBOL_GPL(_mwifiex_dbg); 1795 1796 /* 1797 * This function initializes the module. 1798 * 1799 * The debug FS is also initialized if configured. 1800 */ 1801 static int 1802 mwifiex_init_module(void) 1803 { 1804 #ifdef CONFIG_DEBUG_FS 1805 mwifiex_debugfs_init(); 1806 #endif 1807 return 0; 1808 } 1809 1810 /* 1811 * This function cleans up the module. 1812 * 1813 * The debug FS is removed if available. 1814 */ 1815 static void 1816 mwifiex_cleanup_module(void) 1817 { 1818 #ifdef CONFIG_DEBUG_FS 1819 mwifiex_debugfs_remove(); 1820 #endif 1821 } 1822 1823 module_init(mwifiex_init_module); 1824 module_exit(mwifiex_cleanup_module); 1825 1826 MODULE_AUTHOR("Marvell International Ltd."); 1827 MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION); 1828 MODULE_VERSION(VERSION); 1829 MODULE_LICENSE("GPL v2"); 1830