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