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 atomic_set(&adapter->tx_hw_pending, 0); 274 275 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) 276 adapter->sleep_cfm->data; 277 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); 278 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 279 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); 280 sleep_cfm_buf->result = 0; 281 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); 282 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); 283 284 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params)); 285 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); 286 adapter->tx_lock_flag = false; 287 adapter->null_pkt_interval = 0; 288 adapter->fw_bands = 0; 289 adapter->config_bands = 0; 290 adapter->adhoc_start_band = 0; 291 adapter->scan_channels = NULL; 292 adapter->fw_release_number = 0; 293 adapter->fw_cap_info = 0; 294 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); 295 adapter->event_cause = 0; 296 adapter->region_code = 0; 297 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; 298 adapter->adhoc_awake_period = 0; 299 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); 300 adapter->arp_filter_size = 0; 301 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; 302 adapter->mfg_mode = mfg_mode; 303 adapter->key_api_major_ver = 0; 304 adapter->key_api_minor_ver = 0; 305 eth_broadcast_addr(adapter->perm_addr); 306 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 307 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 308 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 309 adapter->active_scan_triggered = false; 310 setup_timer(&adapter->wakeup_timer, wakeup_timer_fn, 311 (unsigned long)adapter); 312 } 313 314 /* 315 * This function sets trans_start per tx_queue 316 */ 317 void mwifiex_set_trans_start(struct net_device *dev) 318 { 319 int i; 320 321 for (i = 0; i < dev->num_tx_queues; i++) 322 netdev_get_tx_queue(dev, i)->trans_start = jiffies; 323 324 netif_trans_update(dev); 325 } 326 327 /* 328 * This function wakes up all queues in net_device 329 */ 330 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 331 struct mwifiex_adapter *adapter) 332 { 333 unsigned long dev_queue_flags; 334 unsigned int i; 335 336 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 337 338 for (i = 0; i < netdev->num_tx_queues; i++) { 339 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 340 341 if (netif_tx_queue_stopped(txq)) 342 netif_tx_wake_queue(txq); 343 } 344 345 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 346 } 347 348 /* 349 * This function stops all queues in net_device 350 */ 351 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 352 struct mwifiex_adapter *adapter) 353 { 354 unsigned long dev_queue_flags; 355 unsigned int i; 356 357 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 358 359 for (i = 0; i < netdev->num_tx_queues; i++) { 360 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 361 362 if (!netif_tx_queue_stopped(txq)) 363 netif_tx_stop_queue(txq); 364 } 365 366 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 367 } 368 369 /* 370 * This function releases the lock variables and frees the locks and 371 * associated locks. 372 */ 373 static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter) 374 { 375 struct mwifiex_private *priv; 376 s32 i, j; 377 378 /* Free lists */ 379 list_del(&adapter->cmd_free_q); 380 list_del(&adapter->cmd_pending_q); 381 list_del(&adapter->scan_pending_q); 382 383 for (i = 0; i < adapter->priv_num; i++) 384 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 385 386 for (i = 0; i < adapter->priv_num; i++) { 387 if (adapter->priv[i]) { 388 priv = adapter->priv[i]; 389 for (j = 0; j < MAX_NUM_TID; ++j) 390 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 391 list_del(&priv->tx_ba_stream_tbl_ptr); 392 list_del(&priv->rx_reorder_tbl_ptr); 393 list_del(&priv->sta_list); 394 list_del(&priv->auto_tdls_list); 395 } 396 } 397 } 398 399 /* 400 * This function performs cleanup for adapter structure. 401 * 402 * The cleanup is done recursively, by canceling all pending 403 * commands, freeing the member buffers previously allocated 404 * (command buffers, scan table buffer, sleep confirm command 405 * buffer), stopping the timers and calling the cleanup routines 406 * for every interface. 407 */ 408 static void 409 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 410 { 411 int idx; 412 413 if (!adapter) { 414 pr_err("%s: adapter is NULL\n", __func__); 415 return; 416 } 417 418 del_timer(&adapter->wakeup_timer); 419 mwifiex_cancel_all_pending_cmd(adapter); 420 wake_up_interruptible(&adapter->cmd_wait_q.wait); 421 wake_up_interruptible(&adapter->hs_activate_wait_q); 422 423 /* Free lock variables */ 424 mwifiex_free_lock_list(adapter); 425 426 /* Free command buffer */ 427 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n"); 428 mwifiex_free_cmd_buffer(adapter); 429 430 for (idx = 0; idx < adapter->num_mem_types; idx++) { 431 struct memory_type_mapping *entry = 432 &adapter->mem_type_mapping_tbl[idx]; 433 434 if (entry->mem_ptr) { 435 vfree(entry->mem_ptr); 436 entry->mem_ptr = NULL; 437 } 438 entry->mem_size = 0; 439 } 440 441 if (adapter->drv_info_dump) { 442 vfree(adapter->drv_info_dump); 443 adapter->drv_info_dump = NULL; 444 adapter->drv_info_size = 0; 445 } 446 447 if (adapter->sleep_cfm) 448 dev_kfree_skb_any(adapter->sleep_cfm); 449 } 450 451 /* 452 * This function intializes the lock variables and 453 * the list heads. 454 */ 455 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 456 { 457 struct mwifiex_private *priv; 458 s32 i, j; 459 460 spin_lock_init(&adapter->mwifiex_lock); 461 spin_lock_init(&adapter->int_lock); 462 spin_lock_init(&adapter->main_proc_lock); 463 spin_lock_init(&adapter->mwifiex_cmd_lock); 464 spin_lock_init(&adapter->queue_lock); 465 for (i = 0; i < adapter->priv_num; i++) { 466 if (adapter->priv[i]) { 467 priv = adapter->priv[i]; 468 spin_lock_init(&priv->rx_pkt_lock); 469 spin_lock_init(&priv->wmm.ra_list_spinlock); 470 spin_lock_init(&priv->curr_bcn_buf_lock); 471 spin_lock_init(&priv->sta_list_spinlock); 472 spin_lock_init(&priv->auto_tdls_lock); 473 } 474 } 475 476 /* Initialize cmd_free_q */ 477 INIT_LIST_HEAD(&adapter->cmd_free_q); 478 /* Initialize cmd_pending_q */ 479 INIT_LIST_HEAD(&adapter->cmd_pending_q); 480 /* Initialize scan_pending_q */ 481 INIT_LIST_HEAD(&adapter->scan_pending_q); 482 483 spin_lock_init(&adapter->cmd_free_q_lock); 484 spin_lock_init(&adapter->cmd_pending_q_lock); 485 spin_lock_init(&adapter->scan_pending_q_lock); 486 spin_lock_init(&adapter->rx_proc_lock); 487 488 skb_queue_head_init(&adapter->rx_data_q); 489 skb_queue_head_init(&adapter->tx_data_q); 490 491 for (i = 0; i < adapter->priv_num; ++i) { 492 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 493 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 494 } 495 496 for (i = 0; i < adapter->priv_num; i++) { 497 if (!adapter->priv[i]) 498 continue; 499 priv = adapter->priv[i]; 500 for (j = 0; j < MAX_NUM_TID; ++j) 501 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 502 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 503 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 504 INIT_LIST_HEAD(&priv->sta_list); 505 INIT_LIST_HEAD(&priv->auto_tdls_list); 506 skb_queue_head_init(&priv->tdls_txq); 507 skb_queue_head_init(&priv->bypass_txq); 508 509 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 510 spin_lock_init(&priv->rx_reorder_tbl_lock); 511 512 spin_lock_init(&priv->ack_status_lock); 513 idr_init(&priv->ack_status_frames); 514 } 515 516 return 0; 517 } 518 519 /* 520 * This function initializes the firmware. 521 * 522 * The following operations are performed sequentially - 523 * - Allocate adapter structure 524 * - Initialize the adapter structure 525 * - Initialize the private structure 526 * - Add BSS priority tables to the adapter structure 527 * - For each interface, send the init commands to firmware 528 * - Send the first command in command pending queue, if available 529 */ 530 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 531 { 532 int ret; 533 struct mwifiex_private *priv; 534 u8 i, first_sta = true; 535 int is_cmd_pend_q_empty; 536 unsigned long flags; 537 538 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 539 540 /* Allocate memory for member of adapter structure */ 541 ret = mwifiex_allocate_adapter(adapter); 542 if (ret) 543 return -1; 544 545 /* Initialize adapter structure */ 546 mwifiex_init_adapter(adapter); 547 548 for (i = 0; i < adapter->priv_num; i++) { 549 if (adapter->priv[i]) { 550 priv = adapter->priv[i]; 551 552 /* Initialize private structure */ 553 ret = mwifiex_init_priv(priv); 554 if (ret) 555 return -1; 556 } 557 } 558 if (adapter->mfg_mode) { 559 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 560 ret = -EINPROGRESS; 561 } else { 562 for (i = 0; i < adapter->priv_num; i++) { 563 if (adapter->priv[i]) { 564 ret = mwifiex_sta_init_cmd(adapter->priv[i], 565 first_sta, true); 566 if (ret == -1) 567 return -1; 568 569 first_sta = false; 570 } 571 572 573 574 } 575 } 576 577 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); 578 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 579 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); 580 if (!is_cmd_pend_q_empty) { 581 /* Send the first command in queue and return */ 582 if (mwifiex_main_process(adapter) != -1) 583 ret = -EINPROGRESS; 584 } else { 585 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 586 } 587 588 return ret; 589 } 590 591 /* 592 * This function deletes the BSS priority tables. 593 * 594 * The function traverses through all the allocated BSS priority nodes 595 * in every BSS priority table and frees them. 596 */ 597 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 598 { 599 int i; 600 struct mwifiex_adapter *adapter = priv->adapter; 601 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 602 struct list_head *head; 603 spinlock_t *lock; /* bss priority lock */ 604 unsigned long flags; 605 606 for (i = 0; i < adapter->priv_num; ++i) { 607 head = &adapter->bss_prio_tbl[i].bss_prio_head; 608 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 609 mwifiex_dbg(adapter, INFO, 610 "info: delete BSS priority table,\t" 611 "bss_type = %d, bss_num = %d, i = %d,\t" 612 "head = %p\n", 613 priv->bss_type, priv->bss_num, i, head); 614 615 { 616 spin_lock_irqsave(lock, flags); 617 if (list_empty(head)) { 618 spin_unlock_irqrestore(lock, flags); 619 continue; 620 } 621 list_for_each_entry_safe(bssprio_node, tmp_node, head, 622 list) { 623 if (bssprio_node->priv == priv) { 624 mwifiex_dbg(adapter, INFO, 625 "info: Delete\t" 626 "node %p, next = %p\n", 627 bssprio_node, tmp_node); 628 list_del(&bssprio_node->list); 629 kfree(bssprio_node); 630 } 631 } 632 spin_unlock_irqrestore(lock, flags); 633 } 634 } 635 } 636 637 /* 638 * This function frees the private structure, including cleans 639 * up the TX and RX queues and frees the BSS priority tables. 640 */ 641 void mwifiex_free_priv(struct mwifiex_private *priv) 642 { 643 mwifiex_clean_txrx(priv); 644 mwifiex_delete_bss_prio_tbl(priv); 645 mwifiex_free_curr_bcn(priv); 646 } 647 648 /* 649 * This function is used to shutdown the driver. 650 * 651 * The following operations are performed sequentially - 652 * - Check if already shut down 653 * - Make sure the main process has stopped 654 * - Clean up the Tx and Rx queues 655 * - Delete BSS priority tables 656 * - Free the adapter 657 * - Notify completion 658 */ 659 int 660 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 661 { 662 int ret = -EINPROGRESS; 663 struct mwifiex_private *priv; 664 s32 i; 665 unsigned long flags; 666 struct sk_buff *skb; 667 668 /* mwifiex already shutdown */ 669 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 670 return 0; 671 672 adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING; 673 /* wait for mwifiex_process to complete */ 674 if (adapter->mwifiex_processing) { 675 mwifiex_dbg(adapter, WARN, 676 "main process is still running\n"); 677 return ret; 678 } 679 680 /* cancel current command */ 681 if (adapter->curr_cmd) { 682 mwifiex_dbg(adapter, WARN, 683 "curr_cmd is still in processing\n"); 684 del_timer_sync(&adapter->cmd_timer); 685 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 686 adapter->curr_cmd = NULL; 687 } 688 689 /* shut down mwifiex */ 690 mwifiex_dbg(adapter, MSG, 691 "info: shutdown mwifiex...\n"); 692 693 /* Clean up Tx/Rx queues and delete BSS priority table */ 694 for (i = 0; i < adapter->priv_num; i++) { 695 if (adapter->priv[i]) { 696 priv = adapter->priv[i]; 697 698 mwifiex_clean_auto_tdls(priv); 699 mwifiex_abort_cac(priv); 700 mwifiex_clean_txrx(priv); 701 mwifiex_delete_bss_prio_tbl(priv); 702 } 703 } 704 705 atomic_set(&adapter->tx_queued, 0); 706 while ((skb = skb_dequeue(&adapter->tx_data_q))) 707 mwifiex_write_data_complete(adapter, skb, 0, 0); 708 709 spin_lock_irqsave(&adapter->rx_proc_lock, flags); 710 711 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 712 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 713 714 atomic_dec(&adapter->rx_pending); 715 priv = adapter->priv[rx_info->bss_num]; 716 if (priv) 717 priv->stats.rx_dropped++; 718 719 dev_kfree_skb_any(skb); 720 } 721 722 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); 723 724 spin_lock(&adapter->mwifiex_lock); 725 726 mwifiex_adapter_cleanup(adapter); 727 728 spin_unlock(&adapter->mwifiex_lock); 729 730 /* Notify completion */ 731 ret = mwifiex_shutdown_fw_complete(adapter); 732 733 return ret; 734 } 735 736 /* 737 * This function downloads the firmware to the card. 738 * 739 * The actual download is preceded by two sanity checks - 740 * - Check if firmware is already running 741 * - Check if the interface is the winner to download the firmware 742 * 743 * ...and followed by another - 744 * - Check if the firmware is downloaded successfully 745 * 746 * After download is successfully completed, the host interrupts are enabled. 747 */ 748 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 749 struct mwifiex_fw_image *pmfw) 750 { 751 int ret; 752 u32 poll_num = 1; 753 754 if (adapter->if_ops.check_fw_status) { 755 /* check if firmware is already running */ 756 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 757 if (!ret) { 758 mwifiex_dbg(adapter, MSG, 759 "WLAN FW already running! Skip FW dnld\n"); 760 return 0; 761 } 762 } 763 764 /* check if we are the winner for downloading FW */ 765 if (adapter->if_ops.check_winner_status) { 766 adapter->winner = 0; 767 ret = adapter->if_ops.check_winner_status(adapter); 768 769 poll_num = MAX_FIRMWARE_POLL_TRIES; 770 if (ret) { 771 mwifiex_dbg(adapter, MSG, 772 "WLAN read winner status failed!\n"); 773 return ret; 774 } 775 776 if (!adapter->winner) { 777 mwifiex_dbg(adapter, MSG, 778 "WLAN is not the winner! Skip FW dnld\n"); 779 goto poll_fw; 780 } 781 } 782 783 if (pmfw) { 784 /* Download firmware with helper */ 785 ret = adapter->if_ops.prog_fw(adapter, pmfw); 786 if (ret) { 787 mwifiex_dbg(adapter, ERROR, 788 "prog_fw failed ret=%#x\n", ret); 789 return ret; 790 } 791 } 792 793 poll_fw: 794 /* Check if the firmware is downloaded successfully or not */ 795 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 796 if (ret) 797 mwifiex_dbg(adapter, ERROR, 798 "FW failed to be active in time\n"); 799 800 return ret; 801 } 802 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw); 803