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 && !adapter->hs_activated) 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_ant = 0; 114 priv->rx_ant = 0; 115 priv->tx_rate = 0; 116 priv->rxpd_htinfo = 0; 117 priv->rxpd_rate = 0; 118 priv->rate_bitmap = 0; 119 priv->data_rssi_last = 0; 120 priv->data_rssi_avg = 0; 121 priv->data_nf_avg = 0; 122 priv->data_nf_last = 0; 123 priv->bcn_rssi_last = 0; 124 priv->bcn_rssi_avg = 0; 125 priv->bcn_nf_avg = 0; 126 priv->bcn_nf_last = 0; 127 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie)); 128 memset(&priv->aes_key, 0, sizeof(priv->aes_key)); 129 priv->wpa_ie_len = 0; 130 priv->wpa_is_gtk_set = false; 131 132 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf)); 133 priv->assoc_tlv_buf_len = 0; 134 memset(&priv->wps, 0, sizeof(priv->wps)); 135 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf)); 136 priv->gen_ie_buf_len = 0; 137 memset(priv->vs_ie, 0, sizeof(priv->vs_ie)); 138 139 priv->wmm_required = true; 140 priv->wmm_enabled = false; 141 priv->wmm_qosinfo = 0; 142 priv->curr_bcn_buf = NULL; 143 priv->curr_bcn_size = 0; 144 priv->wps_ie = NULL; 145 priv->wps_ie_len = 0; 146 priv->ap_11n_enabled = 0; 147 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg)); 148 149 priv->scan_block = false; 150 151 priv->csa_chan = 0; 152 priv->csa_expire_time = 0; 153 priv->del_list_idx = 0; 154 priv->hs2_enabled = false; 155 priv->check_tdls_tx = false; 156 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID); 157 158 mwifiex_init_11h_params(priv); 159 160 return mwifiex_add_bss_prio_tbl(priv); 161 } 162 163 /* 164 * This function allocates buffers for members of the adapter 165 * structure. 166 * 167 * The memory allocated includes scan table, command buffers, and 168 * sleep confirm command buffer. In addition, the queues are 169 * also initialized. 170 */ 171 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter) 172 { 173 int ret; 174 175 /* Allocate command buffer */ 176 ret = mwifiex_alloc_cmd_buffer(adapter); 177 if (ret) { 178 mwifiex_dbg(adapter, ERROR, 179 "%s: failed to alloc cmd buffer\n", 180 __func__); 181 return -1; 182 } 183 184 adapter->sleep_cfm = 185 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm) 186 + INTF_HEADER_LEN); 187 188 if (!adapter->sleep_cfm) { 189 mwifiex_dbg(adapter, ERROR, 190 "%s: failed to alloc sleep cfm\t" 191 " cmd buffer\n", __func__); 192 return -1; 193 } 194 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN); 195 196 return 0; 197 } 198 199 /* 200 * This function initializes the adapter structure and sets default 201 * values to the members of adapter. 202 * 203 * This also initializes the WMM related parameters in the driver private 204 * structures. 205 */ 206 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter) 207 { 208 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL; 209 210 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm)); 211 212 adapter->cmd_sent = false; 213 214 if (adapter->iface_type == MWIFIEX_SDIO) 215 adapter->data_sent = true; 216 else 217 adapter->data_sent = false; 218 219 adapter->cmd_resp_received = false; 220 adapter->event_received = false; 221 adapter->data_received = false; 222 223 adapter->surprise_removed = false; 224 225 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 226 227 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; 228 adapter->ps_state = PS_STATE_AWAKE; 229 adapter->need_to_wakeup = false; 230 231 adapter->scan_mode = HostCmd_BSS_MODE_ANY; 232 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME; 233 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME; 234 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME; 235 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME; 236 237 adapter->scan_probes = 1; 238 239 adapter->multiple_dtim = 1; 240 241 adapter->local_listen_interval = 0; /* default value in firmware 242 will be used */ 243 244 adapter->is_deep_sleep = false; 245 246 adapter->delay_null_pkt = false; 247 adapter->delay_to_ps = 1000; 248 adapter->enhanced_ps_mode = PS_MODE_AUTO; 249 250 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by 251 default */ 252 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by 253 default */ 254 adapter->pm_wakeup_card_req = false; 255 256 adapter->pm_wakeup_fw_try = false; 257 258 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 259 260 adapter->is_hs_configured = false; 261 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF); 262 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF; 263 adapter->hs_cfg.gap = HS_CFG_GAP_DEF; 264 adapter->hs_activated = false; 265 266 memset(adapter->event_body, 0, sizeof(adapter->event_body)); 267 adapter->hw_dot_11n_dev_cap = 0; 268 adapter->hw_dev_mcs_support = 0; 269 adapter->sec_chan_offset = 0; 270 adapter->adhoc_11n_enabled = false; 271 272 mwifiex_wmm_init(adapter); 273 274 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) 275 adapter->sleep_cfm->data; 276 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); 277 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 278 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); 279 sleep_cfm_buf->result = 0; 280 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); 281 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); 282 283 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params)); 284 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); 285 adapter->tx_lock_flag = false; 286 adapter->null_pkt_interval = 0; 287 adapter->fw_bands = 0; 288 adapter->config_bands = 0; 289 adapter->adhoc_start_band = 0; 290 adapter->scan_channels = NULL; 291 adapter->fw_release_number = 0; 292 adapter->fw_cap_info = 0; 293 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); 294 adapter->event_cause = 0; 295 adapter->region_code = 0; 296 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; 297 adapter->adhoc_awake_period = 0; 298 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); 299 adapter->arp_filter_size = 0; 300 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; 301 adapter->key_api_major_ver = 0; 302 adapter->key_api_minor_ver = 0; 303 eth_broadcast_addr(adapter->perm_addr); 304 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 305 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 306 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 307 adapter->active_scan_triggered = false; 308 setup_timer(&adapter->wakeup_timer, wakeup_timer_fn, 309 (unsigned long)adapter); 310 } 311 312 /* 313 * This function sets trans_start per tx_queue 314 */ 315 void mwifiex_set_trans_start(struct net_device *dev) 316 { 317 int i; 318 319 for (i = 0; i < dev->num_tx_queues; i++) 320 netdev_get_tx_queue(dev, i)->trans_start = jiffies; 321 322 netif_trans_update(dev); 323 } 324 325 /* 326 * This function wakes up all queues in net_device 327 */ 328 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 329 struct mwifiex_adapter *adapter) 330 { 331 unsigned long dev_queue_flags; 332 unsigned int i; 333 334 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 335 336 for (i = 0; i < netdev->num_tx_queues; i++) { 337 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 338 339 if (netif_tx_queue_stopped(txq)) 340 netif_tx_wake_queue(txq); 341 } 342 343 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 344 } 345 346 /* 347 * This function stops all queues in net_device 348 */ 349 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 350 struct mwifiex_adapter *adapter) 351 { 352 unsigned long dev_queue_flags; 353 unsigned int i; 354 355 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 356 357 for (i = 0; i < netdev->num_tx_queues; i++) { 358 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 359 360 if (!netif_tx_queue_stopped(txq)) 361 netif_tx_stop_queue(txq); 362 } 363 364 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 365 } 366 367 /* 368 * This function releases the lock variables and frees the locks and 369 * associated locks. 370 */ 371 static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter) 372 { 373 struct mwifiex_private *priv; 374 s32 i, j; 375 376 /* Free lists */ 377 list_del(&adapter->cmd_free_q); 378 list_del(&adapter->cmd_pending_q); 379 list_del(&adapter->scan_pending_q); 380 381 for (i = 0; i < adapter->priv_num; i++) 382 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 383 384 for (i = 0; i < adapter->priv_num; i++) { 385 if (adapter->priv[i]) { 386 priv = adapter->priv[i]; 387 for (j = 0; j < MAX_NUM_TID; ++j) 388 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 389 list_del(&priv->tx_ba_stream_tbl_ptr); 390 list_del(&priv->rx_reorder_tbl_ptr); 391 list_del(&priv->sta_list); 392 list_del(&priv->auto_tdls_list); 393 } 394 } 395 } 396 397 /* 398 * This function performs cleanup for adapter structure. 399 * 400 * The cleanup is done recursively, by canceling all pending 401 * commands, freeing the member buffers previously allocated 402 * (command buffers, scan table buffer, sleep confirm command 403 * buffer), stopping the timers and calling the cleanup routines 404 * for every interface. 405 */ 406 static void 407 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 408 { 409 int idx; 410 411 if (!adapter) { 412 pr_err("%s: adapter is NULL\n", __func__); 413 return; 414 } 415 416 del_timer(&adapter->wakeup_timer); 417 mwifiex_cancel_all_pending_cmd(adapter); 418 wake_up_interruptible(&adapter->cmd_wait_q.wait); 419 wake_up_interruptible(&adapter->hs_activate_wait_q); 420 421 /* Free lock variables */ 422 mwifiex_free_lock_list(adapter); 423 424 /* Free command buffer */ 425 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n"); 426 mwifiex_free_cmd_buffer(adapter); 427 428 for (idx = 0; idx < adapter->num_mem_types; idx++) { 429 struct memory_type_mapping *entry = 430 &adapter->mem_type_mapping_tbl[idx]; 431 432 if (entry->mem_ptr) { 433 vfree(entry->mem_ptr); 434 entry->mem_ptr = NULL; 435 } 436 entry->mem_size = 0; 437 } 438 439 if (adapter->drv_info_dump) { 440 vfree(adapter->drv_info_dump); 441 adapter->drv_info_dump = NULL; 442 adapter->drv_info_size = 0; 443 } 444 445 if (adapter->sleep_cfm) 446 dev_kfree_skb_any(adapter->sleep_cfm); 447 } 448 449 /* 450 * This function intializes the lock variables and 451 * the list heads. 452 */ 453 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 454 { 455 struct mwifiex_private *priv; 456 s32 i, j; 457 458 spin_lock_init(&adapter->mwifiex_lock); 459 spin_lock_init(&adapter->int_lock); 460 spin_lock_init(&adapter->main_proc_lock); 461 spin_lock_init(&adapter->mwifiex_cmd_lock); 462 spin_lock_init(&adapter->queue_lock); 463 for (i = 0; i < adapter->priv_num; i++) { 464 if (adapter->priv[i]) { 465 priv = adapter->priv[i]; 466 spin_lock_init(&priv->rx_pkt_lock); 467 spin_lock_init(&priv->wmm.ra_list_spinlock); 468 spin_lock_init(&priv->curr_bcn_buf_lock); 469 spin_lock_init(&priv->sta_list_spinlock); 470 spin_lock_init(&priv->auto_tdls_lock); 471 } 472 } 473 474 /* Initialize cmd_free_q */ 475 INIT_LIST_HEAD(&adapter->cmd_free_q); 476 /* Initialize cmd_pending_q */ 477 INIT_LIST_HEAD(&adapter->cmd_pending_q); 478 /* Initialize scan_pending_q */ 479 INIT_LIST_HEAD(&adapter->scan_pending_q); 480 481 spin_lock_init(&adapter->cmd_free_q_lock); 482 spin_lock_init(&adapter->cmd_pending_q_lock); 483 spin_lock_init(&adapter->scan_pending_q_lock); 484 spin_lock_init(&adapter->rx_proc_lock); 485 486 skb_queue_head_init(&adapter->rx_data_q); 487 skb_queue_head_init(&adapter->tx_data_q); 488 489 for (i = 0; i < adapter->priv_num; ++i) { 490 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 491 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 492 } 493 494 for (i = 0; i < adapter->priv_num; i++) { 495 if (!adapter->priv[i]) 496 continue; 497 priv = adapter->priv[i]; 498 for (j = 0; j < MAX_NUM_TID; ++j) 499 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 500 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 501 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 502 INIT_LIST_HEAD(&priv->sta_list); 503 INIT_LIST_HEAD(&priv->auto_tdls_list); 504 skb_queue_head_init(&priv->tdls_txq); 505 skb_queue_head_init(&priv->bypass_txq); 506 507 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 508 spin_lock_init(&priv->rx_reorder_tbl_lock); 509 510 spin_lock_init(&priv->ack_status_lock); 511 idr_init(&priv->ack_status_frames); 512 } 513 514 return 0; 515 } 516 517 /* 518 * This function initializes the firmware. 519 * 520 * The following operations are performed sequentially - 521 * - Allocate adapter structure 522 * - Initialize the adapter structure 523 * - Initialize the private structure 524 * - Add BSS priority tables to the adapter structure 525 * - For each interface, send the init commands to firmware 526 * - Send the first command in command pending queue, if available 527 */ 528 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 529 { 530 int ret; 531 struct mwifiex_private *priv; 532 u8 i, first_sta = true; 533 int is_cmd_pend_q_empty; 534 unsigned long flags; 535 536 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 537 538 /* Allocate memory for member of adapter structure */ 539 ret = mwifiex_allocate_adapter(adapter); 540 if (ret) 541 return -1; 542 543 /* Initialize adapter structure */ 544 mwifiex_init_adapter(adapter); 545 546 for (i = 0; i < adapter->priv_num; i++) { 547 if (adapter->priv[i]) { 548 priv = adapter->priv[i]; 549 550 /* Initialize private structure */ 551 ret = mwifiex_init_priv(priv); 552 if (ret) 553 return -1; 554 } 555 } 556 557 for (i = 0; i < adapter->priv_num; i++) { 558 if (adapter->priv[i]) { 559 ret = mwifiex_sta_init_cmd(adapter->priv[i], first_sta, 560 true); 561 if (ret == -1) 562 return -1; 563 564 first_sta = false; 565 } 566 } 567 568 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); 569 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 570 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); 571 if (!is_cmd_pend_q_empty) { 572 /* Send the first command in queue and return */ 573 if (mwifiex_main_process(adapter) != -1) 574 ret = -EINPROGRESS; 575 } else { 576 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 577 } 578 579 return ret; 580 } 581 582 /* 583 * This function deletes the BSS priority tables. 584 * 585 * The function traverses through all the allocated BSS priority nodes 586 * in every BSS priority table and frees them. 587 */ 588 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 589 { 590 int i; 591 struct mwifiex_adapter *adapter = priv->adapter; 592 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 593 struct list_head *head; 594 spinlock_t *lock; /* bss priority lock */ 595 unsigned long flags; 596 597 for (i = 0; i < adapter->priv_num; ++i) { 598 head = &adapter->bss_prio_tbl[i].bss_prio_head; 599 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 600 mwifiex_dbg(adapter, INFO, 601 "info: delete BSS priority table,\t" 602 "bss_type = %d, bss_num = %d, i = %d,\t" 603 "head = %p\n", 604 priv->bss_type, priv->bss_num, i, head); 605 606 { 607 spin_lock_irqsave(lock, flags); 608 if (list_empty(head)) { 609 spin_unlock_irqrestore(lock, flags); 610 continue; 611 } 612 list_for_each_entry_safe(bssprio_node, tmp_node, head, 613 list) { 614 if (bssprio_node->priv == priv) { 615 mwifiex_dbg(adapter, INFO, 616 "info: Delete\t" 617 "node %p, next = %p\n", 618 bssprio_node, tmp_node); 619 list_del(&bssprio_node->list); 620 kfree(bssprio_node); 621 } 622 } 623 spin_unlock_irqrestore(lock, flags); 624 } 625 } 626 } 627 628 /* 629 * This function frees the private structure, including cleans 630 * up the TX and RX queues and frees the BSS priority tables. 631 */ 632 void mwifiex_free_priv(struct mwifiex_private *priv) 633 { 634 mwifiex_clean_txrx(priv); 635 mwifiex_delete_bss_prio_tbl(priv); 636 mwifiex_free_curr_bcn(priv); 637 } 638 639 /* 640 * This function is used to shutdown the driver. 641 * 642 * The following operations are performed sequentially - 643 * - Check if already shut down 644 * - Make sure the main process has stopped 645 * - Clean up the Tx and Rx queues 646 * - Delete BSS priority tables 647 * - Free the adapter 648 * - Notify completion 649 */ 650 int 651 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 652 { 653 int ret = -EINPROGRESS; 654 struct mwifiex_private *priv; 655 s32 i; 656 unsigned long flags; 657 struct sk_buff *skb; 658 659 /* mwifiex already shutdown */ 660 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 661 return 0; 662 663 adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING; 664 /* wait for mwifiex_process to complete */ 665 if (adapter->mwifiex_processing) { 666 mwifiex_dbg(adapter, WARN, 667 "main process is still running\n"); 668 return ret; 669 } 670 671 /* cancel current command */ 672 if (adapter->curr_cmd) { 673 mwifiex_dbg(adapter, WARN, 674 "curr_cmd is still in processing\n"); 675 del_timer_sync(&adapter->cmd_timer); 676 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 677 adapter->curr_cmd = NULL; 678 } 679 680 /* shut down mwifiex */ 681 mwifiex_dbg(adapter, MSG, 682 "info: shutdown mwifiex...\n"); 683 684 /* Clean up Tx/Rx queues and delete BSS priority table */ 685 for (i = 0; i < adapter->priv_num; i++) { 686 if (adapter->priv[i]) { 687 priv = adapter->priv[i]; 688 689 mwifiex_clean_auto_tdls(priv); 690 mwifiex_abort_cac(priv); 691 mwifiex_clean_txrx(priv); 692 mwifiex_delete_bss_prio_tbl(priv); 693 } 694 } 695 696 atomic_set(&adapter->tx_queued, 0); 697 while ((skb = skb_dequeue(&adapter->tx_data_q))) 698 mwifiex_write_data_complete(adapter, skb, 0, 0); 699 700 spin_lock_irqsave(&adapter->rx_proc_lock, flags); 701 702 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 703 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 704 705 atomic_dec(&adapter->rx_pending); 706 priv = adapter->priv[rx_info->bss_num]; 707 if (priv) 708 priv->stats.rx_dropped++; 709 710 dev_kfree_skb_any(skb); 711 } 712 713 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); 714 715 spin_lock(&adapter->mwifiex_lock); 716 717 mwifiex_adapter_cleanup(adapter); 718 719 spin_unlock(&adapter->mwifiex_lock); 720 721 /* Notify completion */ 722 ret = mwifiex_shutdown_fw_complete(adapter); 723 724 return ret; 725 } 726 727 /* 728 * This function downloads the firmware to the card. 729 * 730 * The actual download is preceded by two sanity checks - 731 * - Check if firmware is already running 732 * - Check if the interface is the winner to download the firmware 733 * 734 * ...and followed by another - 735 * - Check if the firmware is downloaded successfully 736 * 737 * After download is successfully completed, the host interrupts are enabled. 738 */ 739 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 740 struct mwifiex_fw_image *pmfw) 741 { 742 int ret; 743 u32 poll_num = 1; 744 745 if (adapter->if_ops.check_fw_status) { 746 /* check if firmware is already running */ 747 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 748 if (!ret) { 749 mwifiex_dbg(adapter, MSG, 750 "WLAN FW already running! Skip FW dnld\n"); 751 return 0; 752 } 753 } 754 755 /* check if we are the winner for downloading FW */ 756 if (adapter->if_ops.check_winner_status) { 757 adapter->winner = 0; 758 ret = adapter->if_ops.check_winner_status(adapter); 759 760 poll_num = MAX_FIRMWARE_POLL_TRIES; 761 if (ret) { 762 mwifiex_dbg(adapter, MSG, 763 "WLAN read winner status failed!\n"); 764 return ret; 765 } 766 767 if (!adapter->winner) { 768 mwifiex_dbg(adapter, MSG, 769 "WLAN is not the winner! Skip FW dnld\n"); 770 goto poll_fw; 771 } 772 } 773 774 if (pmfw) { 775 /* Download firmware with helper */ 776 ret = adapter->if_ops.prog_fw(adapter, pmfw); 777 if (ret) { 778 mwifiex_dbg(adapter, ERROR, 779 "prog_fw failed ret=%#x\n", ret); 780 return ret; 781 } 782 } 783 784 poll_fw: 785 /* Check if the firmware is downloaded successfully or not */ 786 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 787 if (ret) 788 mwifiex_dbg(adapter, ERROR, 789 "FW failed to be active in time\n"); 790 791 return ret; 792 } 793 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw); 794