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 */ 34static 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 55static void wakeup_timer_fn(unsigned long data) 56{ 57 struct mwifiex_adapter *adapter = (struct mwifiex_adapter *)data; 58 59 dev_err(adapter->dev, "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) 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 */ 74int 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 81 priv->pkt_tx_ctrl = 0; 82 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED; 83 priv->data_rate = 0; /* Initially indicate the rate as auto */ 84 priv->is_data_rate_auto = true; 85 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR; 86 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR; 87 88 priv->sec_info.wep_enabled = 0; 89 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM; 90 priv->sec_info.encryption_mode = 0; 91 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++) 92 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key)); 93 priv->wep_key_curr_index = 0; 94 priv->curr_pkt_filter = HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON | 95 HostCmd_ACT_MAC_ETHERNETII_ENABLE; 96 97 priv->beacon_period = 100; /* beacon interval */ ; 98 priv->attempted_bss_desc = NULL; 99 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params)); 100 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL; 101 102 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid)); 103 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid)); 104 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf)); 105 priv->assoc_rsp_size = 0; 106 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; 107 priv->atim_window = 0; 108 priv->adhoc_state = ADHOC_IDLE; 109 priv->tx_power_level = 0; 110 priv->max_tx_power_level = 0; 111 priv->min_tx_power_level = 0; 112 priv->tx_rate = 0; 113 priv->rxpd_htinfo = 0; 114 priv->rxpd_rate = 0; 115 priv->rate_bitmap = 0; 116 priv->data_rssi_last = 0; 117 priv->data_rssi_avg = 0; 118 priv->data_nf_avg = 0; 119 priv->data_nf_last = 0; 120 priv->bcn_rssi_last = 0; 121 priv->bcn_rssi_avg = 0; 122 priv->bcn_nf_avg = 0; 123 priv->bcn_nf_last = 0; 124 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie)); 125 memset(&priv->aes_key, 0, sizeof(priv->aes_key)); 126 priv->wpa_ie_len = 0; 127 priv->wpa_is_gtk_set = false; 128 129 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf)); 130 priv->assoc_tlv_buf_len = 0; 131 memset(&priv->wps, 0, sizeof(priv->wps)); 132 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf)); 133 priv->gen_ie_buf_len = 0; 134 memset(priv->vs_ie, 0, sizeof(priv->vs_ie)); 135 136 priv->wmm_required = true; 137 priv->wmm_enabled = false; 138 priv->wmm_qosinfo = 0; 139 priv->curr_bcn_buf = NULL; 140 priv->curr_bcn_size = 0; 141 priv->wps_ie = NULL; 142 priv->wps_ie_len = 0; 143 priv->ap_11n_enabled = 0; 144 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg)); 145 146 priv->scan_block = false; 147 148 priv->csa_chan = 0; 149 priv->csa_expire_time = 0; 150 priv->del_list_idx = 0; 151 priv->hs2_enabled = false; 152 priv->check_tdls_tx = false; 153 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID); 154 155 mwifiex_init_11h_params(priv); 156 157 return mwifiex_add_bss_prio_tbl(priv); 158} 159 160/* 161 * This function allocates buffers for members of the adapter 162 * structure. 163 * 164 * The memory allocated includes scan table, command buffers, and 165 * sleep confirm command buffer. In addition, the queues are 166 * also initialized. 167 */ 168static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter) 169{ 170 int ret; 171 172 /* Allocate command buffer */ 173 ret = mwifiex_alloc_cmd_buffer(adapter); 174 if (ret) { 175 dev_err(adapter->dev, "%s: failed to alloc cmd buffer\n", 176 __func__); 177 return -1; 178 } 179 180 adapter->sleep_cfm = 181 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm) 182 + INTF_HEADER_LEN); 183 184 if (!adapter->sleep_cfm) { 185 dev_err(adapter->dev, "%s: failed to alloc sleep cfm" 186 " cmd buffer\n", __func__); 187 return -1; 188 } 189 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN); 190 191 return 0; 192} 193 194/* 195 * This function initializes the adapter structure and sets default 196 * values to the members of adapter. 197 * 198 * This also initializes the WMM related parameters in the driver private 199 * structures. 200 */ 201static void mwifiex_init_adapter(struct mwifiex_adapter *adapter) 202{ 203 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL; 204 205 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm)); 206 207 adapter->cmd_sent = false; 208 209 if (adapter->iface_type == MWIFIEX_SDIO) 210 adapter->data_sent = true; 211 else 212 adapter->data_sent = false; 213 214 adapter->cmd_resp_received = false; 215 adapter->event_received = false; 216 adapter->data_received = false; 217 218 adapter->surprise_removed = false; 219 220 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 221 222 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; 223 adapter->ps_state = PS_STATE_AWAKE; 224 adapter->need_to_wakeup = false; 225 226 adapter->scan_mode = HostCmd_BSS_MODE_ANY; 227 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME; 228 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME; 229 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME; 230 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME; 231 232 adapter->scan_probes = 1; 233 234 adapter->multiple_dtim = 1; 235 236 adapter->local_listen_interval = 0; /* default value in firmware 237 will be used */ 238 239 adapter->is_deep_sleep = false; 240 241 adapter->delay_null_pkt = false; 242 adapter->delay_to_ps = 1000; 243 adapter->enhanced_ps_mode = PS_MODE_AUTO; 244 245 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by 246 default */ 247 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by 248 default */ 249 adapter->pm_wakeup_card_req = false; 250 251 adapter->pm_wakeup_fw_try = false; 252 253 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 254 255 adapter->is_hs_configured = false; 256 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF); 257 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF; 258 adapter->hs_cfg.gap = HS_CFG_GAP_DEF; 259 adapter->hs_activated = false; 260 261 memset(adapter->event_body, 0, sizeof(adapter->event_body)); 262 adapter->hw_dot_11n_dev_cap = 0; 263 adapter->hw_dev_mcs_support = 0; 264 adapter->sec_chan_offset = 0; 265 adapter->adhoc_11n_enabled = false; 266 267 mwifiex_wmm_init(adapter); 268 269 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) 270 adapter->sleep_cfm->data; 271 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); 272 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 273 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); 274 sleep_cfm_buf->result = 0; 275 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); 276 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); 277 278 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params)); 279 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); 280 adapter->tx_lock_flag = false; 281 adapter->null_pkt_interval = 0; 282 adapter->fw_bands = 0; 283 adapter->config_bands = 0; 284 adapter->adhoc_start_band = 0; 285 adapter->scan_channels = NULL; 286 adapter->fw_release_number = 0; 287 adapter->fw_cap_info = 0; 288 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); 289 adapter->event_cause = 0; 290 adapter->region_code = 0; 291 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; 292 adapter->adhoc_awake_period = 0; 293 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); 294 adapter->arp_filter_size = 0; 295 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; 296 adapter->key_api_major_ver = 0; 297 adapter->key_api_minor_ver = 0; 298 eth_broadcast_addr(adapter->perm_addr); 299 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 300 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 301 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 302 303 setup_timer(&adapter->wakeup_timer, wakeup_timer_fn, 304 (unsigned long)adapter); 305} 306 307/* 308 * This function sets trans_start per tx_queue 309 */ 310void mwifiex_set_trans_start(struct net_device *dev) 311{ 312 int i; 313 314 for (i = 0; i < dev->num_tx_queues; i++) 315 netdev_get_tx_queue(dev, i)->trans_start = jiffies; 316 317 dev->trans_start = jiffies; 318} 319 320/* 321 * This function wakes up all queues in net_device 322 */ 323void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 324 struct mwifiex_adapter *adapter) 325{ 326 unsigned long dev_queue_flags; 327 unsigned int i; 328 329 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 330 331 for (i = 0; i < netdev->num_tx_queues; i++) { 332 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 333 334 if (netif_tx_queue_stopped(txq)) 335 netif_tx_wake_queue(txq); 336 } 337 338 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 339} 340 341/* 342 * This function stops all queues in net_device 343 */ 344void mwifiex_stop_net_dev_queue(struct net_device *netdev, 345 struct mwifiex_adapter *adapter) 346{ 347 unsigned long dev_queue_flags; 348 unsigned int i; 349 350 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 351 352 for (i = 0; i < netdev->num_tx_queues; i++) { 353 struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); 354 355 if (!netif_tx_queue_stopped(txq)) 356 netif_tx_stop_queue(txq); 357 } 358 359 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 360} 361 362/* 363 * This function releases the lock variables and frees the locks and 364 * associated locks. 365 */ 366static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter) 367{ 368 struct mwifiex_private *priv; 369 s32 i, j; 370 371 /* Free lists */ 372 list_del(&adapter->cmd_free_q); 373 list_del(&adapter->cmd_pending_q); 374 list_del(&adapter->scan_pending_q); 375 376 for (i = 0; i < adapter->priv_num; i++) 377 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 378 379 for (i = 0; i < adapter->priv_num; i++) { 380 if (adapter->priv[i]) { 381 priv = adapter->priv[i]; 382 for (j = 0; j < MAX_NUM_TID; ++j) 383 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 384 list_del(&priv->tx_ba_stream_tbl_ptr); 385 list_del(&priv->rx_reorder_tbl_ptr); 386 list_del(&priv->sta_list); 387 list_del(&priv->auto_tdls_list); 388 } 389 } 390} 391 392/* 393 * This function performs cleanup for adapter structure. 394 * 395 * The cleanup is done recursively, by canceling all pending 396 * commands, freeing the member buffers previously allocated 397 * (command buffers, scan table buffer, sleep confirm command 398 * buffer), stopping the timers and calling the cleanup routines 399 * for every interface. 400 */ 401static void 402mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 403{ 404 int idx; 405 406 if (!adapter) { 407 pr_err("%s: adapter is NULL\n", __func__); 408 return; 409 } 410 411 del_timer(&adapter->wakeup_timer); 412 mwifiex_cancel_all_pending_cmd(adapter); 413 wake_up_interruptible(&adapter->cmd_wait_q.wait); 414 wake_up_interruptible(&adapter->hs_activate_wait_q); 415 416 /* Free lock variables */ 417 mwifiex_free_lock_list(adapter); 418 419 /* Free command buffer */ 420 dev_dbg(adapter->dev, "info: free cmd buffer\n"); 421 mwifiex_free_cmd_buffer(adapter); 422 423 for (idx = 0; idx < adapter->num_mem_types; idx++) { 424 struct memory_type_mapping *entry = 425 &adapter->mem_type_mapping_tbl[idx]; 426 427 if (entry->mem_ptr) { 428 vfree(entry->mem_ptr); 429 entry->mem_ptr = NULL; 430 } 431 entry->mem_size = 0; 432 } 433 434 if (adapter->drv_info_dump) { 435 vfree(adapter->drv_info_dump); 436 adapter->drv_info_size = 0; 437 } 438 439 if (adapter->sleep_cfm) 440 dev_kfree_skb_any(adapter->sleep_cfm); 441} 442 443/* 444 * This function intializes the lock variables and 445 * the list heads. 446 */ 447int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 448{ 449 struct mwifiex_private *priv; 450 s32 i, j; 451 452 spin_lock_init(&adapter->mwifiex_lock); 453 spin_lock_init(&adapter->int_lock); 454 spin_lock_init(&adapter->main_proc_lock); 455 spin_lock_init(&adapter->mwifiex_cmd_lock); 456 spin_lock_init(&adapter->queue_lock); 457 for (i = 0; i < adapter->priv_num; i++) { 458 if (adapter->priv[i]) { 459 priv = adapter->priv[i]; 460 spin_lock_init(&priv->rx_pkt_lock); 461 spin_lock_init(&priv->wmm.ra_list_spinlock); 462 spin_lock_init(&priv->curr_bcn_buf_lock); 463 spin_lock_init(&priv->sta_list_spinlock); 464 spin_lock_init(&priv->auto_tdls_lock); 465 } 466 } 467 468 /* Initialize cmd_free_q */ 469 INIT_LIST_HEAD(&adapter->cmd_free_q); 470 /* Initialize cmd_pending_q */ 471 INIT_LIST_HEAD(&adapter->cmd_pending_q); 472 /* Initialize scan_pending_q */ 473 INIT_LIST_HEAD(&adapter->scan_pending_q); 474 475 spin_lock_init(&adapter->cmd_free_q_lock); 476 spin_lock_init(&adapter->cmd_pending_q_lock); 477 spin_lock_init(&adapter->scan_pending_q_lock); 478 spin_lock_init(&adapter->rx_proc_lock); 479 480 skb_queue_head_init(&adapter->rx_data_q); 481 skb_queue_head_init(&adapter->tx_data_q); 482 483 for (i = 0; i < adapter->priv_num; ++i) { 484 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 485 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 486 } 487 488 for (i = 0; i < adapter->priv_num; i++) { 489 if (!adapter->priv[i]) 490 continue; 491 priv = adapter->priv[i]; 492 for (j = 0; j < MAX_NUM_TID; ++j) 493 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 494 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 495 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 496 INIT_LIST_HEAD(&priv->sta_list); 497 INIT_LIST_HEAD(&priv->auto_tdls_list); 498 skb_queue_head_init(&priv->tdls_txq); 499 500 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 501 spin_lock_init(&priv->rx_reorder_tbl_lock); 502 503 spin_lock_init(&priv->ack_status_lock); 504 idr_init(&priv->ack_status_frames); 505 } 506 507 return 0; 508} 509 510/* 511 * This function initializes the firmware. 512 * 513 * The following operations are performed sequentially - 514 * - Allocate adapter structure 515 * - Initialize the adapter structure 516 * - Initialize the private structure 517 * - Add BSS priority tables to the adapter structure 518 * - For each interface, send the init commands to firmware 519 * - Send the first command in command pending queue, if available 520 */ 521int mwifiex_init_fw(struct mwifiex_adapter *adapter) 522{ 523 int ret; 524 struct mwifiex_private *priv; 525 u8 i, first_sta = true; 526 int is_cmd_pend_q_empty; 527 unsigned long flags; 528 529 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 530 531 /* Allocate memory for member of adapter structure */ 532 ret = mwifiex_allocate_adapter(adapter); 533 if (ret) 534 return -1; 535 536 /* Initialize adapter structure */ 537 mwifiex_init_adapter(adapter); 538 539 for (i = 0; i < adapter->priv_num; i++) { 540 if (adapter->priv[i]) { 541 priv = adapter->priv[i]; 542 543 /* Initialize private structure */ 544 ret = mwifiex_init_priv(priv); 545 if (ret) 546 return -1; 547 } 548 } 549 550 if (adapter->if_ops.init_fw_port) { 551 if (adapter->if_ops.init_fw_port(adapter)) 552 return -1; 553 } 554 555 for (i = 0; i < adapter->priv_num; i++) { 556 if (adapter->priv[i]) { 557 ret = mwifiex_sta_init_cmd(adapter->priv[i], first_sta, 558 true); 559 if (ret == -1) 560 return -1; 561 562 first_sta = false; 563 } 564 } 565 566 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); 567 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 568 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); 569 if (!is_cmd_pend_q_empty) { 570 /* Send the first command in queue and return */ 571 if (mwifiex_main_process(adapter) != -1) 572 ret = -EINPROGRESS; 573 } else { 574 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 575 } 576 577 return ret; 578} 579 580/* 581 * This function deletes the BSS priority tables. 582 * 583 * The function traverses through all the allocated BSS priority nodes 584 * in every BSS priority table and frees them. 585 */ 586static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 587{ 588 int i; 589 struct mwifiex_adapter *adapter = priv->adapter; 590 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 591 struct list_head *head; 592 spinlock_t *lock; /* bss priority lock */ 593 unsigned long flags; 594 595 for (i = 0; i < adapter->priv_num; ++i) { 596 head = &adapter->bss_prio_tbl[i].bss_prio_head; 597 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 598 dev_dbg(adapter->dev, "info: delete BSS priority table," 599 " bss_type = %d, bss_num = %d, i = %d," 600 " head = %p\n", 601 priv->bss_type, priv->bss_num, i, head); 602 603 { 604 spin_lock_irqsave(lock, flags); 605 if (list_empty(head)) { 606 spin_unlock_irqrestore(lock, flags); 607 continue; 608 } 609 list_for_each_entry_safe(bssprio_node, tmp_node, head, 610 list) { 611 if (bssprio_node->priv == priv) { 612 dev_dbg(adapter->dev, "info: Delete " 613 "node %p, next = %p\n", 614 bssprio_node, tmp_node); 615 list_del(&bssprio_node->list); 616 kfree(bssprio_node); 617 } 618 } 619 spin_unlock_irqrestore(lock, flags); 620 } 621 } 622} 623 624/* 625 * This function frees the private structure, including cleans 626 * up the TX and RX queues and frees the BSS priority tables. 627 */ 628void mwifiex_free_priv(struct mwifiex_private *priv) 629{ 630 mwifiex_clean_txrx(priv); 631 mwifiex_delete_bss_prio_tbl(priv); 632 mwifiex_free_curr_bcn(priv); 633} 634 635/* 636 * This function is used to shutdown the driver. 637 * 638 * The following operations are performed sequentially - 639 * - Check if already shut down 640 * - Make sure the main process has stopped 641 * - Clean up the Tx and Rx queues 642 * - Delete BSS priority tables 643 * - Free the adapter 644 * - Notify completion 645 */ 646int 647mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 648{ 649 int ret = -EINPROGRESS; 650 struct mwifiex_private *priv; 651 s32 i; 652 unsigned long flags; 653 struct sk_buff *skb; 654 655 /* mwifiex already shutdown */ 656 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 657 return 0; 658 659 adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING; 660 /* wait for mwifiex_process to complete */ 661 if (adapter->mwifiex_processing) { 662 dev_warn(adapter->dev, "main process is still running\n"); 663 return ret; 664 } 665 666 /* cancel current command */ 667 if (adapter->curr_cmd) { 668 dev_warn(adapter->dev, "curr_cmd is still in processing\n"); 669 del_timer_sync(&adapter->cmd_timer); 670 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 671 adapter->curr_cmd = NULL; 672 } 673 674 /* shut down mwifiex */ 675 dev_dbg(adapter->dev, "info: shutdown mwifiex...\n"); 676 677 /* Clean up Tx/Rx queues and delete BSS priority table */ 678 for (i = 0; i < adapter->priv_num; i++) { 679 if (adapter->priv[i]) { 680 priv = adapter->priv[i]; 681 682 mwifiex_clean_auto_tdls(priv); 683 mwifiex_abort_cac(priv); 684 mwifiex_clean_txrx(priv); 685 mwifiex_delete_bss_prio_tbl(priv); 686 } 687 } 688 689 atomic_set(&adapter->tx_queued, 0); 690 while ((skb = skb_dequeue(&adapter->tx_data_q))) 691 mwifiex_write_data_complete(adapter, skb, 0, 0); 692 693 spin_lock_irqsave(&adapter->rx_proc_lock, flags); 694 695 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 696 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 697 698 atomic_dec(&adapter->rx_pending); 699 priv = adapter->priv[rx_info->bss_num]; 700 if (priv) 701 priv->stats.rx_dropped++; 702 703 dev_kfree_skb_any(skb); 704 } 705 706 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); 707 708 spin_lock(&adapter->mwifiex_lock); 709 710 mwifiex_adapter_cleanup(adapter); 711 712 spin_unlock(&adapter->mwifiex_lock); 713 714 /* Notify completion */ 715 ret = mwifiex_shutdown_fw_complete(adapter); 716 717 return ret; 718} 719 720/* 721 * This function downloads the firmware to the card. 722 * 723 * The actual download is preceded by two sanity checks - 724 * - Check if firmware is already running 725 * - Check if the interface is the winner to download the firmware 726 * 727 * ...and followed by another - 728 * - Check if the firmware is downloaded successfully 729 * 730 * After download is successfully completed, the host interrupts are enabled. 731 */ 732int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 733 struct mwifiex_fw_image *pmfw) 734{ 735 int ret; 736 u32 poll_num = 1; 737 738 if (adapter->if_ops.check_fw_status) { 739 adapter->winner = 0; 740 741 /* check if firmware is already running */ 742 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 743 if (!ret) { 744 dev_notice(adapter->dev, 745 "WLAN FW already running! Skip FW dnld\n"); 746 return 0; 747 } 748 749 poll_num = MAX_FIRMWARE_POLL_TRIES; 750 751 /* check if we are the winner for downloading FW */ 752 if (!adapter->winner) { 753 dev_notice(adapter->dev, 754 "FW already running! Skip FW dnld\n"); 755 goto poll_fw; 756 } 757 } 758 759 if (pmfw) { 760 /* Download firmware with helper */ 761 ret = adapter->if_ops.prog_fw(adapter, pmfw); 762 if (ret) { 763 dev_err(adapter->dev, "prog_fw failed ret=%#x\n", ret); 764 return ret; 765 } 766 } 767 768poll_fw: 769 /* Check if the firmware is downloaded successfully or not */ 770 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 771 if (ret) 772 dev_err(adapter->dev, "FW failed to be active in time\n"); 773 774 return ret; 775} 776