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->mfg_mode = mfg_mode; 302 adapter->key_api_major_ver = 0; 303 adapter->key_api_minor_ver = 0; 304 eth_broadcast_addr(adapter->perm_addr); 305 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 306 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 307 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 308 adapter->active_scan_triggered = false; 309 setup_timer(&adapter->wakeup_timer, wakeup_timer_fn, 310 (unsigned long)adapter); 311 } 312 313 /* 314 * This function sets trans_start per tx_queue 315 */ 316 void mwifiex_set_trans_start(struct net_device *dev) 317 { 318 int i; 319 320 for (i = 0; i < dev->num_tx_queues; i++) 321 netdev_get_tx_queue(dev, i)->trans_start = jiffies; 322 323 netif_trans_update(dev); 324 } 325 326 /* 327 * This function wakes up all queues in net_device 328 */ 329 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 330 struct mwifiex_adapter *adapter) 331 { 332 unsigned long dev_queue_flags; 333 unsigned int i; 334 335 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 336 337 for (i = 0; i < netdev->num_tx_queues; i++) { 338 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 339 340 if (netif_tx_queue_stopped(txq)) 341 netif_tx_wake_queue(txq); 342 } 343 344 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 345 } 346 347 /* 348 * This function stops all queues in net_device 349 */ 350 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 351 struct mwifiex_adapter *adapter) 352 { 353 unsigned long dev_queue_flags; 354 unsigned int i; 355 356 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 357 358 for (i = 0; i < netdev->num_tx_queues; i++) { 359 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 360 361 if (!netif_tx_queue_stopped(txq)) 362 netif_tx_stop_queue(txq); 363 } 364 365 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 366 } 367 368 /* 369 * This function releases the lock variables and frees the locks and 370 * associated locks. 371 */ 372 static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter) 373 { 374 struct mwifiex_private *priv; 375 s32 i, j; 376 377 /* Free lists */ 378 list_del(&adapter->cmd_free_q); 379 list_del(&adapter->cmd_pending_q); 380 list_del(&adapter->scan_pending_q); 381 382 for (i = 0; i < adapter->priv_num; i++) 383 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 384 385 for (i = 0; i < adapter->priv_num; i++) { 386 if (adapter->priv[i]) { 387 priv = adapter->priv[i]; 388 for (j = 0; j < MAX_NUM_TID; ++j) 389 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 390 list_del(&priv->tx_ba_stream_tbl_ptr); 391 list_del(&priv->rx_reorder_tbl_ptr); 392 list_del(&priv->sta_list); 393 list_del(&priv->auto_tdls_list); 394 } 395 } 396 } 397 398 /* 399 * This function performs cleanup for adapter structure. 400 * 401 * The cleanup is done recursively, by canceling all pending 402 * commands, freeing the member buffers previously allocated 403 * (command buffers, scan table buffer, sleep confirm command 404 * buffer), stopping the timers and calling the cleanup routines 405 * for every interface. 406 */ 407 static void 408 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 409 { 410 int idx; 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 for (idx = 0; idx < adapter->num_mem_types; idx++) { 430 struct memory_type_mapping *entry = 431 &adapter->mem_type_mapping_tbl[idx]; 432 433 if (entry->mem_ptr) { 434 vfree(entry->mem_ptr); 435 entry->mem_ptr = NULL; 436 } 437 entry->mem_size = 0; 438 } 439 440 if (adapter->drv_info_dump) { 441 vfree(adapter->drv_info_dump); 442 adapter->drv_info_dump = NULL; 443 adapter->drv_info_size = 0; 444 } 445 446 if (adapter->sleep_cfm) 447 dev_kfree_skb_any(adapter->sleep_cfm); 448 } 449 450 /* 451 * This function intializes the lock variables and 452 * the list heads. 453 */ 454 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 455 { 456 struct mwifiex_private *priv; 457 s32 i, j; 458 459 spin_lock_init(&adapter->mwifiex_lock); 460 spin_lock_init(&adapter->int_lock); 461 spin_lock_init(&adapter->main_proc_lock); 462 spin_lock_init(&adapter->mwifiex_cmd_lock); 463 spin_lock_init(&adapter->queue_lock); 464 for (i = 0; i < adapter->priv_num; i++) { 465 if (adapter->priv[i]) { 466 priv = adapter->priv[i]; 467 spin_lock_init(&priv->rx_pkt_lock); 468 spin_lock_init(&priv->wmm.ra_list_spinlock); 469 spin_lock_init(&priv->curr_bcn_buf_lock); 470 spin_lock_init(&priv->sta_list_spinlock); 471 spin_lock_init(&priv->auto_tdls_lock); 472 } 473 } 474 475 /* Initialize cmd_free_q */ 476 INIT_LIST_HEAD(&adapter->cmd_free_q); 477 /* Initialize cmd_pending_q */ 478 INIT_LIST_HEAD(&adapter->cmd_pending_q); 479 /* Initialize scan_pending_q */ 480 INIT_LIST_HEAD(&adapter->scan_pending_q); 481 482 spin_lock_init(&adapter->cmd_free_q_lock); 483 spin_lock_init(&adapter->cmd_pending_q_lock); 484 spin_lock_init(&adapter->scan_pending_q_lock); 485 spin_lock_init(&adapter->rx_proc_lock); 486 487 skb_queue_head_init(&adapter->rx_data_q); 488 skb_queue_head_init(&adapter->tx_data_q); 489 490 for (i = 0; i < adapter->priv_num; ++i) { 491 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 492 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 493 } 494 495 for (i = 0; i < adapter->priv_num; i++) { 496 if (!adapter->priv[i]) 497 continue; 498 priv = adapter->priv[i]; 499 for (j = 0; j < MAX_NUM_TID; ++j) 500 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 501 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 502 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 503 INIT_LIST_HEAD(&priv->sta_list); 504 INIT_LIST_HEAD(&priv->auto_tdls_list); 505 skb_queue_head_init(&priv->tdls_txq); 506 skb_queue_head_init(&priv->bypass_txq); 507 508 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 509 spin_lock_init(&priv->rx_reorder_tbl_lock); 510 511 spin_lock_init(&priv->ack_status_lock); 512 idr_init(&priv->ack_status_frames); 513 } 514 515 return 0; 516 } 517 518 /* 519 * This function initializes the firmware. 520 * 521 * The following operations are performed sequentially - 522 * - Allocate adapter structure 523 * - Initialize the adapter structure 524 * - Initialize the private structure 525 * - Add BSS priority tables to the adapter structure 526 * - For each interface, send the init commands to firmware 527 * - Send the first command in command pending queue, if available 528 */ 529 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 530 { 531 int ret; 532 struct mwifiex_private *priv; 533 u8 i, first_sta = true; 534 int is_cmd_pend_q_empty; 535 unsigned long flags; 536 537 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 538 539 /* Allocate memory for member of adapter structure */ 540 ret = mwifiex_allocate_adapter(adapter); 541 if (ret) 542 return -1; 543 544 /* Initialize adapter structure */ 545 mwifiex_init_adapter(adapter); 546 547 for (i = 0; i < adapter->priv_num; i++) { 548 if (adapter->priv[i]) { 549 priv = adapter->priv[i]; 550 551 /* Initialize private structure */ 552 ret = mwifiex_init_priv(priv); 553 if (ret) 554 return -1; 555 } 556 } 557 if (adapter->mfg_mode) { 558 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 559 ret = -EINPROGRESS; 560 } else { 561 for (i = 0; i < adapter->priv_num; i++) { 562 if (adapter->priv[i]) { 563 ret = mwifiex_sta_init_cmd(adapter->priv[i], 564 first_sta, true); 565 if (ret == -1) 566 return -1; 567 568 first_sta = false; 569 } 570 571 572 573 } 574 } 575 576 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); 577 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 578 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); 579 if (!is_cmd_pend_q_empty) { 580 /* Send the first command in queue and return */ 581 if (mwifiex_main_process(adapter) != -1) 582 ret = -EINPROGRESS; 583 } else { 584 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 585 } 586 587 return ret; 588 } 589 590 /* 591 * This function deletes the BSS priority tables. 592 * 593 * The function traverses through all the allocated BSS priority nodes 594 * in every BSS priority table and frees them. 595 */ 596 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 597 { 598 int i; 599 struct mwifiex_adapter *adapter = priv->adapter; 600 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 601 struct list_head *head; 602 spinlock_t *lock; /* bss priority lock */ 603 unsigned long flags; 604 605 for (i = 0; i < adapter->priv_num; ++i) { 606 head = &adapter->bss_prio_tbl[i].bss_prio_head; 607 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 608 mwifiex_dbg(adapter, INFO, 609 "info: delete BSS priority table,\t" 610 "bss_type = %d, bss_num = %d, i = %d,\t" 611 "head = %p\n", 612 priv->bss_type, priv->bss_num, i, head); 613 614 { 615 spin_lock_irqsave(lock, flags); 616 if (list_empty(head)) { 617 spin_unlock_irqrestore(lock, flags); 618 continue; 619 } 620 list_for_each_entry_safe(bssprio_node, tmp_node, head, 621 list) { 622 if (bssprio_node->priv == priv) { 623 mwifiex_dbg(adapter, INFO, 624 "info: Delete\t" 625 "node %p, next = %p\n", 626 bssprio_node, tmp_node); 627 list_del(&bssprio_node->list); 628 kfree(bssprio_node); 629 } 630 } 631 spin_unlock_irqrestore(lock, flags); 632 } 633 } 634 } 635 636 /* 637 * This function frees the private structure, including cleans 638 * up the TX and RX queues and frees the BSS priority tables. 639 */ 640 void mwifiex_free_priv(struct mwifiex_private *priv) 641 { 642 mwifiex_clean_txrx(priv); 643 mwifiex_delete_bss_prio_tbl(priv); 644 mwifiex_free_curr_bcn(priv); 645 } 646 647 /* 648 * This function is used to shutdown the driver. 649 * 650 * The following operations are performed sequentially - 651 * - Check if already shut down 652 * - Make sure the main process has stopped 653 * - Clean up the Tx and Rx queues 654 * - Delete BSS priority tables 655 * - Free the adapter 656 * - Notify completion 657 */ 658 int 659 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 660 { 661 int ret = -EINPROGRESS; 662 struct mwifiex_private *priv; 663 s32 i; 664 unsigned long flags; 665 struct sk_buff *skb; 666 667 /* mwifiex already shutdown */ 668 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 669 return 0; 670 671 adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING; 672 /* wait for mwifiex_process to complete */ 673 if (adapter->mwifiex_processing) { 674 mwifiex_dbg(adapter, WARN, 675 "main process is still running\n"); 676 return ret; 677 } 678 679 /* cancel current command */ 680 if (adapter->curr_cmd) { 681 mwifiex_dbg(adapter, WARN, 682 "curr_cmd is still in processing\n"); 683 del_timer_sync(&adapter->cmd_timer); 684 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 685 adapter->curr_cmd = NULL; 686 } 687 688 /* shut down mwifiex */ 689 mwifiex_dbg(adapter, MSG, 690 "info: shutdown mwifiex...\n"); 691 692 /* Clean up Tx/Rx queues and delete BSS priority table */ 693 for (i = 0; i < adapter->priv_num; i++) { 694 if (adapter->priv[i]) { 695 priv = adapter->priv[i]; 696 697 mwifiex_clean_auto_tdls(priv); 698 mwifiex_abort_cac(priv); 699 mwifiex_clean_txrx(priv); 700 mwifiex_delete_bss_prio_tbl(priv); 701 } 702 } 703 704 atomic_set(&adapter->tx_queued, 0); 705 while ((skb = skb_dequeue(&adapter->tx_data_q))) 706 mwifiex_write_data_complete(adapter, skb, 0, 0); 707 708 spin_lock_irqsave(&adapter->rx_proc_lock, flags); 709 710 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 711 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 712 713 atomic_dec(&adapter->rx_pending); 714 priv = adapter->priv[rx_info->bss_num]; 715 if (priv) 716 priv->stats.rx_dropped++; 717 718 dev_kfree_skb_any(skb); 719 } 720 721 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); 722 723 spin_lock(&adapter->mwifiex_lock); 724 725 mwifiex_adapter_cleanup(adapter); 726 727 spin_unlock(&adapter->mwifiex_lock); 728 729 /* Notify completion */ 730 ret = mwifiex_shutdown_fw_complete(adapter); 731 732 return ret; 733 } 734 735 /* 736 * This function downloads the firmware to the card. 737 * 738 * The actual download is preceded by two sanity checks - 739 * - Check if firmware is already running 740 * - Check if the interface is the winner to download the firmware 741 * 742 * ...and followed by another - 743 * - Check if the firmware is downloaded successfully 744 * 745 * After download is successfully completed, the host interrupts are enabled. 746 */ 747 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 748 struct mwifiex_fw_image *pmfw) 749 { 750 int ret; 751 u32 poll_num = 1; 752 753 if (adapter->if_ops.check_fw_status) { 754 /* check if firmware is already running */ 755 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 756 if (!ret) { 757 mwifiex_dbg(adapter, MSG, 758 "WLAN FW already running! Skip FW dnld\n"); 759 return 0; 760 } 761 } 762 763 /* check if we are the winner for downloading FW */ 764 if (adapter->if_ops.check_winner_status) { 765 adapter->winner = 0; 766 ret = adapter->if_ops.check_winner_status(adapter); 767 768 poll_num = MAX_FIRMWARE_POLL_TRIES; 769 if (ret) { 770 mwifiex_dbg(adapter, MSG, 771 "WLAN read winner status failed!\n"); 772 return ret; 773 } 774 775 if (!adapter->winner) { 776 mwifiex_dbg(adapter, MSG, 777 "WLAN is not the winner! Skip FW dnld\n"); 778 goto poll_fw; 779 } 780 } 781 782 if (pmfw) { 783 /* Download firmware with helper */ 784 ret = adapter->if_ops.prog_fw(adapter, pmfw); 785 if (ret) { 786 mwifiex_dbg(adapter, ERROR, 787 "prog_fw failed ret=%#x\n", ret); 788 return ret; 789 } 790 } 791 792 poll_fw: 793 /* Check if the firmware is downloaded successfully or not */ 794 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 795 if (ret) 796 mwifiex_dbg(adapter, ERROR, 797 "FW failed to be active in time\n"); 798 799 return ret; 800 } 801 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw); 802