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 if (adapter->iface_type == MWIFIEX_USB) 221 adapter->intf_hdr_len = 0; 222 else 223 adapter->intf_hdr_len = INTF_HEADER_LEN; 224 225 adapter->cmd_resp_received = false; 226 adapter->event_received = false; 227 adapter->data_received = false; 228 229 adapter->surprise_removed = false; 230 231 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 232 233 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; 234 adapter->ps_state = PS_STATE_AWAKE; 235 adapter->need_to_wakeup = false; 236 237 adapter->scan_mode = HostCmd_BSS_MODE_ANY; 238 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME; 239 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME; 240 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME; 241 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME; 242 243 adapter->scan_probes = 1; 244 245 adapter->multiple_dtim = 1; 246 247 adapter->local_listen_interval = 0; /* default value in firmware 248 will be used */ 249 250 adapter->is_deep_sleep = false; 251 252 adapter->delay_null_pkt = false; 253 adapter->delay_to_ps = 1000; 254 adapter->enhanced_ps_mode = PS_MODE_AUTO; 255 256 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by 257 default */ 258 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by 259 default */ 260 adapter->pm_wakeup_card_req = false; 261 262 adapter->pm_wakeup_fw_try = false; 263 264 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 265 266 adapter->is_hs_configured = false; 267 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF); 268 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF; 269 adapter->hs_cfg.gap = HS_CFG_GAP_DEF; 270 adapter->hs_activated = false; 271 272 memset(adapter->event_body, 0, sizeof(adapter->event_body)); 273 adapter->hw_dot_11n_dev_cap = 0; 274 adapter->hw_dev_mcs_support = 0; 275 adapter->sec_chan_offset = 0; 276 adapter->adhoc_11n_enabled = false; 277 278 mwifiex_wmm_init(adapter); 279 atomic_set(&adapter->tx_hw_pending, 0); 280 281 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) 282 adapter->sleep_cfm->data; 283 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); 284 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 285 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); 286 sleep_cfm_buf->result = 0; 287 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); 288 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); 289 290 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params)); 291 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); 292 adapter->tx_lock_flag = false; 293 adapter->null_pkt_interval = 0; 294 adapter->fw_bands = 0; 295 adapter->config_bands = 0; 296 adapter->adhoc_start_band = 0; 297 adapter->scan_channels = NULL; 298 adapter->fw_release_number = 0; 299 adapter->fw_cap_info = 0; 300 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); 301 adapter->event_cause = 0; 302 adapter->region_code = 0; 303 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; 304 adapter->adhoc_awake_period = 0; 305 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); 306 adapter->arp_filter_size = 0; 307 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; 308 adapter->mfg_mode = mfg_mode; 309 adapter->key_api_major_ver = 0; 310 adapter->key_api_minor_ver = 0; 311 eth_broadcast_addr(adapter->perm_addr); 312 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 313 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 314 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 315 adapter->active_scan_triggered = false; 316 setup_timer(&adapter->wakeup_timer, wakeup_timer_fn, 317 (unsigned long)adapter); 318 } 319 320 /* 321 * This function sets trans_start per tx_queue 322 */ 323 void mwifiex_set_trans_start(struct net_device *dev) 324 { 325 int i; 326 327 for (i = 0; i < dev->num_tx_queues; i++) 328 netdev_get_tx_queue(dev, i)->trans_start = jiffies; 329 330 netif_trans_update(dev); 331 } 332 333 /* 334 * This function wakes up all queues in net_device 335 */ 336 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 337 struct mwifiex_adapter *adapter) 338 { 339 unsigned long dev_queue_flags; 340 unsigned int i; 341 342 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 343 344 for (i = 0; i < netdev->num_tx_queues; i++) { 345 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 346 347 if (netif_tx_queue_stopped(txq)) 348 netif_tx_wake_queue(txq); 349 } 350 351 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 352 } 353 354 /* 355 * This function stops all queues in net_device 356 */ 357 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 358 struct mwifiex_adapter *adapter) 359 { 360 unsigned long dev_queue_flags; 361 unsigned int i; 362 363 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 364 365 for (i = 0; i < netdev->num_tx_queues; i++) { 366 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 367 368 if (!netif_tx_queue_stopped(txq)) 369 netif_tx_stop_queue(txq); 370 } 371 372 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 373 } 374 375 /* 376 * This function releases the lock variables and frees the locks and 377 * associated locks. 378 */ 379 static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter) 380 { 381 struct mwifiex_private *priv; 382 s32 i, j; 383 384 /* Free lists */ 385 list_del(&adapter->cmd_free_q); 386 list_del(&adapter->cmd_pending_q); 387 list_del(&adapter->scan_pending_q); 388 389 for (i = 0; i < adapter->priv_num; i++) 390 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 391 392 for (i = 0; i < adapter->priv_num; i++) { 393 if (adapter->priv[i]) { 394 priv = adapter->priv[i]; 395 for (j = 0; j < MAX_NUM_TID; ++j) 396 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 397 list_del(&priv->tx_ba_stream_tbl_ptr); 398 list_del(&priv->rx_reorder_tbl_ptr); 399 list_del(&priv->sta_list); 400 list_del(&priv->auto_tdls_list); 401 } 402 } 403 } 404 405 /* 406 * This function performs cleanup for adapter structure. 407 * 408 * The cleanup is done recursively, by canceling all pending 409 * commands, freeing the member buffers previously allocated 410 * (command buffers, scan table buffer, sleep confirm command 411 * buffer), stopping the timers and calling the cleanup routines 412 * for every interface. 413 */ 414 static void 415 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 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->int_lock); 443 spin_lock_init(&adapter->main_proc_lock); 444 spin_lock_init(&adapter->mwifiex_cmd_lock); 445 spin_lock_init(&adapter->queue_lock); 446 for (i = 0; i < adapter->priv_num; i++) { 447 if (adapter->priv[i]) { 448 priv = adapter->priv[i]; 449 spin_lock_init(&priv->rx_pkt_lock); 450 spin_lock_init(&priv->wmm.ra_list_spinlock); 451 spin_lock_init(&priv->curr_bcn_buf_lock); 452 spin_lock_init(&priv->sta_list_spinlock); 453 spin_lock_init(&priv->auto_tdls_lock); 454 } 455 } 456 457 /* Initialize cmd_free_q */ 458 INIT_LIST_HEAD(&adapter->cmd_free_q); 459 /* Initialize cmd_pending_q */ 460 INIT_LIST_HEAD(&adapter->cmd_pending_q); 461 /* Initialize scan_pending_q */ 462 INIT_LIST_HEAD(&adapter->scan_pending_q); 463 464 spin_lock_init(&adapter->cmd_free_q_lock); 465 spin_lock_init(&adapter->cmd_pending_q_lock); 466 spin_lock_init(&adapter->scan_pending_q_lock); 467 spin_lock_init(&adapter->rx_proc_lock); 468 469 skb_queue_head_init(&adapter->rx_data_q); 470 skb_queue_head_init(&adapter->tx_data_q); 471 472 for (i = 0; i < adapter->priv_num; ++i) { 473 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 474 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 475 } 476 477 for (i = 0; i < adapter->priv_num; i++) { 478 if (!adapter->priv[i]) 479 continue; 480 priv = adapter->priv[i]; 481 for (j = 0; j < MAX_NUM_TID; ++j) 482 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 483 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 484 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 485 INIT_LIST_HEAD(&priv->sta_list); 486 INIT_LIST_HEAD(&priv->auto_tdls_list); 487 skb_queue_head_init(&priv->tdls_txq); 488 skb_queue_head_init(&priv->bypass_txq); 489 490 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 491 spin_lock_init(&priv->rx_reorder_tbl_lock); 492 493 spin_lock_init(&priv->ack_status_lock); 494 idr_init(&priv->ack_status_frames); 495 } 496 497 return 0; 498 } 499 500 /* 501 * This function initializes the firmware. 502 * 503 * The following operations are performed sequentially - 504 * - Allocate adapter structure 505 * - Initialize the adapter structure 506 * - Initialize the private structure 507 * - Add BSS priority tables to the adapter structure 508 * - For each interface, send the init commands to firmware 509 * - Send the first command in command pending queue, if available 510 */ 511 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 512 { 513 int ret; 514 struct mwifiex_private *priv; 515 u8 i, first_sta = true; 516 int is_cmd_pend_q_empty; 517 unsigned long flags; 518 519 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 520 521 /* Allocate memory for member of adapter structure */ 522 ret = mwifiex_allocate_adapter(adapter); 523 if (ret) 524 return -1; 525 526 /* Initialize adapter structure */ 527 mwifiex_init_adapter(adapter); 528 529 for (i = 0; i < adapter->priv_num; i++) { 530 if (adapter->priv[i]) { 531 priv = adapter->priv[i]; 532 533 /* Initialize private structure */ 534 ret = mwifiex_init_priv(priv); 535 if (ret) 536 return -1; 537 } 538 } 539 if (adapter->mfg_mode) { 540 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 541 ret = -EINPROGRESS; 542 } else { 543 for (i = 0; i < adapter->priv_num; i++) { 544 if (adapter->priv[i]) { 545 ret = mwifiex_sta_init_cmd(adapter->priv[i], 546 first_sta, true); 547 if (ret == -1) 548 return -1; 549 550 first_sta = false; 551 } 552 553 554 555 } 556 } 557 558 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); 559 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 560 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); 561 if (!is_cmd_pend_q_empty) { 562 /* Send the first command in queue and return */ 563 if (mwifiex_main_process(adapter) != -1) 564 ret = -EINPROGRESS; 565 } else { 566 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 567 } 568 569 return ret; 570 } 571 572 /* 573 * This function deletes the BSS priority tables. 574 * 575 * The function traverses through all the allocated BSS priority nodes 576 * in every BSS priority table and frees them. 577 */ 578 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 579 { 580 int i; 581 struct mwifiex_adapter *adapter = priv->adapter; 582 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 583 struct list_head *head; 584 spinlock_t *lock; /* bss priority lock */ 585 unsigned long flags; 586 587 for (i = 0; i < adapter->priv_num; ++i) { 588 head = &adapter->bss_prio_tbl[i].bss_prio_head; 589 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 590 mwifiex_dbg(adapter, INFO, 591 "info: delete BSS priority table,\t" 592 "bss_type = %d, bss_num = %d, i = %d,\t" 593 "head = %p\n", 594 priv->bss_type, priv->bss_num, i, head); 595 596 { 597 spin_lock_irqsave(lock, flags); 598 if (list_empty(head)) { 599 spin_unlock_irqrestore(lock, flags); 600 continue; 601 } 602 list_for_each_entry_safe(bssprio_node, tmp_node, head, 603 list) { 604 if (bssprio_node->priv == priv) { 605 mwifiex_dbg(adapter, INFO, 606 "info: Delete\t" 607 "node %p, next = %p\n", 608 bssprio_node, tmp_node); 609 list_del(&bssprio_node->list); 610 kfree(bssprio_node); 611 } 612 } 613 spin_unlock_irqrestore(lock, flags); 614 } 615 } 616 } 617 618 /* 619 * This function frees the private structure, including cleans 620 * up the TX and RX queues and frees the BSS priority tables. 621 */ 622 void mwifiex_free_priv(struct mwifiex_private *priv) 623 { 624 mwifiex_clean_txrx(priv); 625 mwifiex_delete_bss_prio_tbl(priv); 626 mwifiex_free_curr_bcn(priv); 627 } 628 629 /* 630 * This function is used to shutdown the driver. 631 * 632 * The following operations are performed sequentially - 633 * - Check if already shut down 634 * - Make sure the main process has stopped 635 * - Clean up the Tx and Rx queues 636 * - Delete BSS priority tables 637 * - Free the adapter 638 * - Notify completion 639 */ 640 void 641 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 642 { 643 struct mwifiex_private *priv; 644 s32 i; 645 unsigned long flags; 646 struct sk_buff *skb; 647 648 /* mwifiex already shutdown */ 649 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 650 return; 651 652 /* cancel current command */ 653 if (adapter->curr_cmd) { 654 mwifiex_dbg(adapter, WARN, 655 "curr_cmd is still in processing\n"); 656 del_timer_sync(&adapter->cmd_timer); 657 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 658 adapter->curr_cmd = NULL; 659 } 660 661 /* shut down mwifiex */ 662 mwifiex_dbg(adapter, MSG, 663 "info: shutdown mwifiex...\n"); 664 665 /* Clean up Tx/Rx queues and delete BSS priority table */ 666 for (i = 0; i < adapter->priv_num; i++) { 667 if (adapter->priv[i]) { 668 priv = adapter->priv[i]; 669 670 mwifiex_clean_auto_tdls(priv); 671 mwifiex_abort_cac(priv); 672 mwifiex_free_priv(priv); 673 } 674 } 675 676 atomic_set(&adapter->tx_queued, 0); 677 while ((skb = skb_dequeue(&adapter->tx_data_q))) 678 mwifiex_write_data_complete(adapter, skb, 0, 0); 679 680 spin_lock_irqsave(&adapter->rx_proc_lock, flags); 681 682 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 683 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 684 685 atomic_dec(&adapter->rx_pending); 686 priv = adapter->priv[rx_info->bss_num]; 687 if (priv) 688 priv->stats.rx_dropped++; 689 690 dev_kfree_skb_any(skb); 691 } 692 693 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); 694 695 mwifiex_adapter_cleanup(adapter); 696 697 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY; 698 } 699 700 /* 701 * This function downloads the firmware to the card. 702 * 703 * The actual download is preceded by two sanity checks - 704 * - Check if firmware is already running 705 * - Check if the interface is the winner to download the firmware 706 * 707 * ...and followed by another - 708 * - Check if the firmware is downloaded successfully 709 * 710 * After download is successfully completed, the host interrupts are enabled. 711 */ 712 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 713 struct mwifiex_fw_image *pmfw) 714 { 715 int ret; 716 u32 poll_num = 1; 717 718 if (adapter->if_ops.check_fw_status) { 719 /* check if firmware is already running */ 720 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 721 if (!ret) { 722 mwifiex_dbg(adapter, MSG, 723 "WLAN FW already running! Skip FW dnld\n"); 724 return 0; 725 } 726 } 727 728 /* check if we are the winner for downloading FW */ 729 if (adapter->if_ops.check_winner_status) { 730 adapter->winner = 0; 731 ret = adapter->if_ops.check_winner_status(adapter); 732 733 poll_num = MAX_FIRMWARE_POLL_TRIES; 734 if (ret) { 735 mwifiex_dbg(adapter, MSG, 736 "WLAN read winner status failed!\n"); 737 return ret; 738 } 739 740 if (!adapter->winner) { 741 mwifiex_dbg(adapter, MSG, 742 "WLAN is not the winner! Skip FW dnld\n"); 743 goto poll_fw; 744 } 745 } 746 747 if (pmfw) { 748 /* Download firmware with helper */ 749 ret = adapter->if_ops.prog_fw(adapter, pmfw); 750 if (ret) { 751 mwifiex_dbg(adapter, ERROR, 752 "prog_fw failed ret=%#x\n", ret); 753 return ret; 754 } 755 } 756 757 poll_fw: 758 /* Check if the firmware is downloaded successfully or not */ 759 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 760 if (ret) 761 mwifiex_dbg(adapter, ERROR, 762 "FW failed to be active in time\n"); 763 764 return ret; 765 } 766 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw); 767