1 /* 2 * Marvell Wireless LAN device driver: HW/FW Initialization 3 * 4 * Copyright (C) 2011-2014, Marvell International Ltd. 5 * 6 * This software file (the "File") is distributed by Marvell International 7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 17 * this warranty disclaimer. 18 */ 19 20 #include "decl.h" 21 #include "ioctl.h" 22 #include "util.h" 23 #include "fw.h" 24 #include "main.h" 25 #include "wmm.h" 26 #include "11n.h" 27 28 /* 29 * This function adds a BSS priority table to the table list. 30 * 31 * The function allocates a new BSS priority table node and adds it to 32 * the end of BSS priority table list, kept in driver memory. 33 */ 34 static int mwifiex_add_bss_prio_tbl(struct mwifiex_private *priv) 35 { 36 struct mwifiex_adapter *adapter = priv->adapter; 37 struct mwifiex_bss_prio_node *bss_prio; 38 struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl; 39 unsigned long flags; 40 41 bss_prio = kzalloc(sizeof(struct mwifiex_bss_prio_node), GFP_KERNEL); 42 if (!bss_prio) 43 return -ENOMEM; 44 45 bss_prio->priv = priv; 46 INIT_LIST_HEAD(&bss_prio->list); 47 48 spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags); 49 list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head); 50 spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags); 51 52 return 0; 53 } 54 55 static void wakeup_timer_fn(unsigned long data) 56 { 57 struct mwifiex_adapter *adapter = (struct mwifiex_adapter *)data; 58 59 mwifiex_dbg(adapter, ERROR, "Firmware wakeup failed\n"); 60 adapter->hw_status = MWIFIEX_HW_STATUS_RESET; 61 mwifiex_cancel_all_pending_cmd(adapter); 62 63 if (adapter->if_ops.card_reset) 64 adapter->if_ops.card_reset(adapter); 65 } 66 67 /* 68 * This function initializes the private structure and sets default 69 * values to the members. 70 * 71 * Additionally, it also initializes all the locks and sets up all the 72 * lists. 73 */ 74 int mwifiex_init_priv(struct mwifiex_private *priv) 75 { 76 u32 i; 77 78 priv->media_connected = false; 79 eth_broadcast_addr(priv->curr_addr); 80 priv->port_open = false; 81 priv->usb_port = MWIFIEX_USB_EP_DATA; 82 priv->pkt_tx_ctrl = 0; 83 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED; 84 priv->data_rate = 0; /* Initially indicate the rate as auto */ 85 priv->is_data_rate_auto = true; 86 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR; 87 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR; 88 89 priv->sec_info.wep_enabled = 0; 90 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM; 91 priv->sec_info.encryption_mode = 0; 92 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++) 93 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key)); 94 priv->wep_key_curr_index = 0; 95 priv->curr_pkt_filter = HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON | 96 HostCmd_ACT_MAC_ETHERNETII_ENABLE; 97 98 priv->beacon_period = 100; /* beacon interval */ 99 priv->attempted_bss_desc = NULL; 100 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params)); 101 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL; 102 103 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid)); 104 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid)); 105 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf)); 106 priv->assoc_rsp_size = 0; 107 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; 108 priv->atim_window = 0; 109 priv->adhoc_state = ADHOC_IDLE; 110 priv->tx_power_level = 0; 111 priv->max_tx_power_level = 0; 112 priv->min_tx_power_level = 0; 113 priv->tx_rate = 0; 114 priv->rxpd_htinfo = 0; 115 priv->rxpd_rate = 0; 116 priv->rate_bitmap = 0; 117 priv->data_rssi_last = 0; 118 priv->data_rssi_avg = 0; 119 priv->data_nf_avg = 0; 120 priv->data_nf_last = 0; 121 priv->bcn_rssi_last = 0; 122 priv->bcn_rssi_avg = 0; 123 priv->bcn_nf_avg = 0; 124 priv->bcn_nf_last = 0; 125 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie)); 126 memset(&priv->aes_key, 0, sizeof(priv->aes_key)); 127 priv->wpa_ie_len = 0; 128 priv->wpa_is_gtk_set = false; 129 130 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf)); 131 priv->assoc_tlv_buf_len = 0; 132 memset(&priv->wps, 0, sizeof(priv->wps)); 133 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf)); 134 priv->gen_ie_buf_len = 0; 135 memset(priv->vs_ie, 0, sizeof(priv->vs_ie)); 136 137 priv->wmm_required = true; 138 priv->wmm_enabled = false; 139 priv->wmm_qosinfo = 0; 140 priv->curr_bcn_buf = NULL; 141 priv->curr_bcn_size = 0; 142 priv->wps_ie = NULL; 143 priv->wps_ie_len = 0; 144 priv->ap_11n_enabled = 0; 145 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg)); 146 147 priv->scan_block = false; 148 149 priv->csa_chan = 0; 150 priv->csa_expire_time = 0; 151 priv->del_list_idx = 0; 152 priv->hs2_enabled = false; 153 priv->check_tdls_tx = false; 154 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID); 155 156 mwifiex_init_11h_params(priv); 157 158 return mwifiex_add_bss_prio_tbl(priv); 159 } 160 161 /* 162 * This function allocates buffers for members of the adapter 163 * structure. 164 * 165 * The memory allocated includes scan table, command buffers, and 166 * sleep confirm command buffer. In addition, the queues are 167 * also initialized. 168 */ 169 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter) 170 { 171 int ret; 172 173 /* Allocate command buffer */ 174 ret = mwifiex_alloc_cmd_buffer(adapter); 175 if (ret) { 176 mwifiex_dbg(adapter, ERROR, 177 "%s: failed to alloc cmd buffer\n", 178 __func__); 179 return -1; 180 } 181 182 adapter->sleep_cfm = 183 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm) 184 + INTF_HEADER_LEN); 185 186 if (!adapter->sleep_cfm) { 187 mwifiex_dbg(adapter, ERROR, 188 "%s: failed to alloc sleep cfm\t" 189 " cmd buffer\n", __func__); 190 return -1; 191 } 192 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN); 193 194 return 0; 195 } 196 197 /* 198 * This function initializes the adapter structure and sets default 199 * values to the members of adapter. 200 * 201 * This also initializes the WMM related parameters in the driver private 202 * structures. 203 */ 204 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter) 205 { 206 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL; 207 208 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm)); 209 210 adapter->cmd_sent = false; 211 212 if (adapter->iface_type == MWIFIEX_SDIO) 213 adapter->data_sent = true; 214 else 215 adapter->data_sent = false; 216 217 adapter->cmd_resp_received = false; 218 adapter->event_received = false; 219 adapter->data_received = false; 220 221 adapter->surprise_removed = false; 222 223 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 224 225 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; 226 adapter->ps_state = PS_STATE_AWAKE; 227 adapter->need_to_wakeup = false; 228 229 adapter->scan_mode = HostCmd_BSS_MODE_ANY; 230 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME; 231 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME; 232 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME; 233 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME; 234 235 adapter->scan_probes = 1; 236 237 adapter->multiple_dtim = 1; 238 239 adapter->local_listen_interval = 0; /* default value in firmware 240 will be used */ 241 242 adapter->is_deep_sleep = false; 243 244 adapter->delay_null_pkt = false; 245 adapter->delay_to_ps = 1000; 246 adapter->enhanced_ps_mode = PS_MODE_AUTO; 247 248 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by 249 default */ 250 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by 251 default */ 252 adapter->pm_wakeup_card_req = false; 253 254 adapter->pm_wakeup_fw_try = false; 255 256 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 257 258 adapter->is_hs_configured = false; 259 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF); 260 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF; 261 adapter->hs_cfg.gap = HS_CFG_GAP_DEF; 262 adapter->hs_activated = false; 263 264 memset(adapter->event_body, 0, sizeof(adapter->event_body)); 265 adapter->hw_dot_11n_dev_cap = 0; 266 adapter->hw_dev_mcs_support = 0; 267 adapter->sec_chan_offset = 0; 268 adapter->adhoc_11n_enabled = false; 269 270 mwifiex_wmm_init(adapter); 271 272 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) 273 adapter->sleep_cfm->data; 274 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); 275 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 276 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); 277 sleep_cfm_buf->result = 0; 278 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); 279 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); 280 281 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params)); 282 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); 283 adapter->tx_lock_flag = false; 284 adapter->null_pkt_interval = 0; 285 adapter->fw_bands = 0; 286 adapter->config_bands = 0; 287 adapter->adhoc_start_band = 0; 288 adapter->scan_channels = NULL; 289 adapter->fw_release_number = 0; 290 adapter->fw_cap_info = 0; 291 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); 292 adapter->event_cause = 0; 293 adapter->region_code = 0; 294 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; 295 adapter->adhoc_awake_period = 0; 296 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); 297 adapter->arp_filter_size = 0; 298 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; 299 adapter->key_api_major_ver = 0; 300 adapter->key_api_minor_ver = 0; 301 eth_broadcast_addr(adapter->perm_addr); 302 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 303 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 304 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 305 adapter->active_scan_triggered = false; 306 setup_timer(&adapter->wakeup_timer, wakeup_timer_fn, 307 (unsigned long)adapter); 308 } 309 310 /* 311 * This function sets trans_start per tx_queue 312 */ 313 void mwifiex_set_trans_start(struct net_device *dev) 314 { 315 int i; 316 317 for (i = 0; i < dev->num_tx_queues; i++) 318 netdev_get_tx_queue(dev, i)->trans_start = jiffies; 319 320 netif_trans_update(dev); 321 } 322 323 /* 324 * This function wakes up all queues in net_device 325 */ 326 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 327 struct mwifiex_adapter *adapter) 328 { 329 unsigned long dev_queue_flags; 330 unsigned int i; 331 332 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 333 334 for (i = 0; i < netdev->num_tx_queues; i++) { 335 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 336 337 if (netif_tx_queue_stopped(txq)) 338 netif_tx_wake_queue(txq); 339 } 340 341 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 342 } 343 344 /* 345 * This function stops all queues in net_device 346 */ 347 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 348 struct mwifiex_adapter *adapter) 349 { 350 unsigned long dev_queue_flags; 351 unsigned int i; 352 353 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 354 355 for (i = 0; i < netdev->num_tx_queues; i++) { 356 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 357 358 if (!netif_tx_queue_stopped(txq)) 359 netif_tx_stop_queue(txq); 360 } 361 362 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 363 } 364 365 /* 366 * This function releases the lock variables and frees the locks and 367 * associated locks. 368 */ 369 static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter) 370 { 371 struct mwifiex_private *priv; 372 s32 i, j; 373 374 /* Free lists */ 375 list_del(&adapter->cmd_free_q); 376 list_del(&adapter->cmd_pending_q); 377 list_del(&adapter->scan_pending_q); 378 379 for (i = 0; i < adapter->priv_num; i++) 380 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 381 382 for (i = 0; i < adapter->priv_num; i++) { 383 if (adapter->priv[i]) { 384 priv = adapter->priv[i]; 385 for (j = 0; j < MAX_NUM_TID; ++j) 386 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 387 list_del(&priv->tx_ba_stream_tbl_ptr); 388 list_del(&priv->rx_reorder_tbl_ptr); 389 list_del(&priv->sta_list); 390 list_del(&priv->auto_tdls_list); 391 } 392 } 393 } 394 395 /* 396 * This function performs cleanup for adapter structure. 397 * 398 * The cleanup is done recursively, by canceling all pending 399 * commands, freeing the member buffers previously allocated 400 * (command buffers, scan table buffer, sleep confirm command 401 * buffer), stopping the timers and calling the cleanup routines 402 * for every interface. 403 */ 404 static void 405 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 406 { 407 int idx; 408 409 if (!adapter) { 410 pr_err("%s: adapter is NULL\n", __func__); 411 return; 412 } 413 414 del_timer(&adapter->wakeup_timer); 415 mwifiex_cancel_all_pending_cmd(adapter); 416 wake_up_interruptible(&adapter->cmd_wait_q.wait); 417 wake_up_interruptible(&adapter->hs_activate_wait_q); 418 419 /* Free lock variables */ 420 mwifiex_free_lock_list(adapter); 421 422 /* Free command buffer */ 423 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n"); 424 mwifiex_free_cmd_buffer(adapter); 425 426 for (idx = 0; idx < adapter->num_mem_types; idx++) { 427 struct memory_type_mapping *entry = 428 &adapter->mem_type_mapping_tbl[idx]; 429 430 if (entry->mem_ptr) { 431 vfree(entry->mem_ptr); 432 entry->mem_ptr = NULL; 433 } 434 entry->mem_size = 0; 435 } 436 437 if (adapter->drv_info_dump) { 438 vfree(adapter->drv_info_dump); 439 adapter->drv_info_dump = NULL; 440 adapter->drv_info_size = 0; 441 } 442 443 if (adapter->sleep_cfm) 444 dev_kfree_skb_any(adapter->sleep_cfm); 445 } 446 447 /* 448 * This function intializes the lock variables and 449 * the list heads. 450 */ 451 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 452 { 453 struct mwifiex_private *priv; 454 s32 i, j; 455 456 spin_lock_init(&adapter->mwifiex_lock); 457 spin_lock_init(&adapter->int_lock); 458 spin_lock_init(&adapter->main_proc_lock); 459 spin_lock_init(&adapter->mwifiex_cmd_lock); 460 spin_lock_init(&adapter->queue_lock); 461 for (i = 0; i < adapter->priv_num; i++) { 462 if (adapter->priv[i]) { 463 priv = adapter->priv[i]; 464 spin_lock_init(&priv->rx_pkt_lock); 465 spin_lock_init(&priv->wmm.ra_list_spinlock); 466 spin_lock_init(&priv->curr_bcn_buf_lock); 467 spin_lock_init(&priv->sta_list_spinlock); 468 spin_lock_init(&priv->auto_tdls_lock); 469 } 470 } 471 472 /* Initialize cmd_free_q */ 473 INIT_LIST_HEAD(&adapter->cmd_free_q); 474 /* Initialize cmd_pending_q */ 475 INIT_LIST_HEAD(&adapter->cmd_pending_q); 476 /* Initialize scan_pending_q */ 477 INIT_LIST_HEAD(&adapter->scan_pending_q); 478 479 spin_lock_init(&adapter->cmd_free_q_lock); 480 spin_lock_init(&adapter->cmd_pending_q_lock); 481 spin_lock_init(&adapter->scan_pending_q_lock); 482 spin_lock_init(&adapter->rx_proc_lock); 483 484 skb_queue_head_init(&adapter->rx_data_q); 485 skb_queue_head_init(&adapter->tx_data_q); 486 487 for (i = 0; i < adapter->priv_num; ++i) { 488 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 489 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 490 } 491 492 for (i = 0; i < adapter->priv_num; i++) { 493 if (!adapter->priv[i]) 494 continue; 495 priv = adapter->priv[i]; 496 for (j = 0; j < MAX_NUM_TID; ++j) 497 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 498 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 499 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 500 INIT_LIST_HEAD(&priv->sta_list); 501 INIT_LIST_HEAD(&priv->auto_tdls_list); 502 skb_queue_head_init(&priv->tdls_txq); 503 skb_queue_head_init(&priv->bypass_txq); 504 505 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 506 spin_lock_init(&priv->rx_reorder_tbl_lock); 507 508 spin_lock_init(&priv->ack_status_lock); 509 idr_init(&priv->ack_status_frames); 510 } 511 512 return 0; 513 } 514 515 /* 516 * This function initializes the firmware. 517 * 518 * The following operations are performed sequentially - 519 * - Allocate adapter structure 520 * - Initialize the adapter structure 521 * - Initialize the private structure 522 * - Add BSS priority tables to the adapter structure 523 * - For each interface, send the init commands to firmware 524 * - Send the first command in command pending queue, if available 525 */ 526 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 527 { 528 int ret; 529 struct mwifiex_private *priv; 530 u8 i, first_sta = true; 531 int is_cmd_pend_q_empty; 532 unsigned long flags; 533 534 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 535 536 /* Allocate memory for member of adapter structure */ 537 ret = mwifiex_allocate_adapter(adapter); 538 if (ret) 539 return -1; 540 541 /* Initialize adapter structure */ 542 mwifiex_init_adapter(adapter); 543 544 for (i = 0; i < adapter->priv_num; i++) { 545 if (adapter->priv[i]) { 546 priv = adapter->priv[i]; 547 548 /* Initialize private structure */ 549 ret = mwifiex_init_priv(priv); 550 if (ret) 551 return -1; 552 } 553 } 554 555 for (i = 0; i < adapter->priv_num; i++) { 556 if (adapter->priv[i]) { 557 ret = mwifiex_sta_init_cmd(adapter->priv[i], first_sta, 558 true); 559 if (ret == -1) 560 return -1; 561 562 first_sta = false; 563 } 564 } 565 566 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); 567 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 568 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); 569 if (!is_cmd_pend_q_empty) { 570 /* Send the first command in queue and return */ 571 if (mwifiex_main_process(adapter) != -1) 572 ret = -EINPROGRESS; 573 } else { 574 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 575 } 576 577 return ret; 578 } 579 580 /* 581 * This function deletes the BSS priority tables. 582 * 583 * The function traverses through all the allocated BSS priority nodes 584 * in every BSS priority table and frees them. 585 */ 586 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 587 { 588 int i; 589 struct mwifiex_adapter *adapter = priv->adapter; 590 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 591 struct list_head *head; 592 spinlock_t *lock; /* bss priority lock */ 593 unsigned long flags; 594 595 for (i = 0; i < adapter->priv_num; ++i) { 596 head = &adapter->bss_prio_tbl[i].bss_prio_head; 597 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 598 mwifiex_dbg(adapter, INFO, 599 "info: delete BSS priority table,\t" 600 "bss_type = %d, bss_num = %d, i = %d,\t" 601 "head = %p\n", 602 priv->bss_type, priv->bss_num, i, head); 603 604 { 605 spin_lock_irqsave(lock, flags); 606 if (list_empty(head)) { 607 spin_unlock_irqrestore(lock, flags); 608 continue; 609 } 610 list_for_each_entry_safe(bssprio_node, tmp_node, head, 611 list) { 612 if (bssprio_node->priv == priv) { 613 mwifiex_dbg(adapter, INFO, 614 "info: Delete\t" 615 "node %p, next = %p\n", 616 bssprio_node, tmp_node); 617 list_del(&bssprio_node->list); 618 kfree(bssprio_node); 619 } 620 } 621 spin_unlock_irqrestore(lock, flags); 622 } 623 } 624 } 625 626 /* 627 * This function frees the private structure, including cleans 628 * up the TX and RX queues and frees the BSS priority tables. 629 */ 630 void mwifiex_free_priv(struct mwifiex_private *priv) 631 { 632 mwifiex_clean_txrx(priv); 633 mwifiex_delete_bss_prio_tbl(priv); 634 mwifiex_free_curr_bcn(priv); 635 } 636 637 /* 638 * This function is used to shutdown the driver. 639 * 640 * The following operations are performed sequentially - 641 * - Check if already shut down 642 * - Make sure the main process has stopped 643 * - Clean up the Tx and Rx queues 644 * - Delete BSS priority tables 645 * - Free the adapter 646 * - Notify completion 647 */ 648 int 649 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 650 { 651 int ret = -EINPROGRESS; 652 struct mwifiex_private *priv; 653 s32 i; 654 unsigned long flags; 655 struct sk_buff *skb; 656 657 /* mwifiex already shutdown */ 658 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 659 return 0; 660 661 adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING; 662 /* wait for mwifiex_process to complete */ 663 if (adapter->mwifiex_processing) { 664 mwifiex_dbg(adapter, WARN, 665 "main process is still running\n"); 666 return ret; 667 } 668 669 /* cancel current command */ 670 if (adapter->curr_cmd) { 671 mwifiex_dbg(adapter, WARN, 672 "curr_cmd is still in processing\n"); 673 del_timer_sync(&adapter->cmd_timer); 674 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 675 adapter->curr_cmd = NULL; 676 } 677 678 /* shut down mwifiex */ 679 mwifiex_dbg(adapter, MSG, 680 "info: shutdown mwifiex...\n"); 681 682 /* Clean up Tx/Rx queues and delete BSS priority table */ 683 for (i = 0; i < adapter->priv_num; i++) { 684 if (adapter->priv[i]) { 685 priv = adapter->priv[i]; 686 687 mwifiex_clean_auto_tdls(priv); 688 mwifiex_abort_cac(priv); 689 mwifiex_clean_txrx(priv); 690 mwifiex_delete_bss_prio_tbl(priv); 691 } 692 } 693 694 atomic_set(&adapter->tx_queued, 0); 695 while ((skb = skb_dequeue(&adapter->tx_data_q))) 696 mwifiex_write_data_complete(adapter, skb, 0, 0); 697 698 spin_lock_irqsave(&adapter->rx_proc_lock, flags); 699 700 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 701 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 702 703 atomic_dec(&adapter->rx_pending); 704 priv = adapter->priv[rx_info->bss_num]; 705 if (priv) 706 priv->stats.rx_dropped++; 707 708 dev_kfree_skb_any(skb); 709 } 710 711 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); 712 713 spin_lock(&adapter->mwifiex_lock); 714 715 mwifiex_adapter_cleanup(adapter); 716 717 spin_unlock(&adapter->mwifiex_lock); 718 719 /* Notify completion */ 720 ret = mwifiex_shutdown_fw_complete(adapter); 721 722 return ret; 723 } 724 725 /* 726 * This function downloads the firmware to the card. 727 * 728 * The actual download is preceded by two sanity checks - 729 * - Check if firmware is already running 730 * - Check if the interface is the winner to download the firmware 731 * 732 * ...and followed by another - 733 * - Check if the firmware is downloaded successfully 734 * 735 * After download is successfully completed, the host interrupts are enabled. 736 */ 737 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 738 struct mwifiex_fw_image *pmfw) 739 { 740 int ret; 741 u32 poll_num = 1; 742 743 if (adapter->if_ops.check_fw_status) { 744 /* check if firmware is already running */ 745 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 746 if (!ret) { 747 mwifiex_dbg(adapter, MSG, 748 "WLAN FW already running! Skip FW dnld\n"); 749 return 0; 750 } 751 } 752 753 /* check if we are the winner for downloading FW */ 754 if (adapter->if_ops.check_winner_status) { 755 adapter->winner = 0; 756 ret = adapter->if_ops.check_winner_status(adapter); 757 758 poll_num = MAX_FIRMWARE_POLL_TRIES; 759 if (ret) { 760 mwifiex_dbg(adapter, MSG, 761 "WLAN read winner status failed!\n"); 762 return ret; 763 } 764 765 if (!adapter->winner) { 766 mwifiex_dbg(adapter, MSG, 767 "WLAN is not the winner! Skip FW dnld\n"); 768 goto poll_fw; 769 } 770 } 771 772 if (pmfw) { 773 /* Download firmware with helper */ 774 ret = adapter->if_ops.prog_fw(adapter, pmfw); 775 if (ret) { 776 mwifiex_dbg(adapter, ERROR, 777 "prog_fw failed ret=%#x\n", ret); 778 return ret; 779 } 780 } 781 782 poll_fw: 783 /* Check if the firmware is downloaded successfully or not */ 784 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 785 if (ret) 786 mwifiex_dbg(adapter, ERROR, 787 "FW failed to be active in time\n"); 788 789 return ret; 790 } 791