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; 340 341 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 342 netif_tx_wake_all_queues(netdev); 343 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 344 } 345 346 /* 347 * This function stops all queues in net_device 348 */ 349 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 350 struct mwifiex_adapter *adapter) 351 { 352 unsigned long dev_queue_flags; 353 354 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 355 netif_tx_stop_all_queues(netdev); 356 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 357 } 358 359 /* 360 * This function invalidates the list heads. 361 */ 362 static void mwifiex_invalidate_lists(struct mwifiex_adapter *adapter) 363 { 364 struct mwifiex_private *priv; 365 s32 i, j; 366 367 list_del(&adapter->cmd_free_q); 368 list_del(&adapter->cmd_pending_q); 369 list_del(&adapter->scan_pending_q); 370 371 for (i = 0; i < adapter->priv_num; i++) 372 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 373 374 for (i = 0; i < adapter->priv_num; i++) { 375 if (adapter->priv[i]) { 376 priv = adapter->priv[i]; 377 for (j = 0; j < MAX_NUM_TID; ++j) 378 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 379 list_del(&priv->tx_ba_stream_tbl_ptr); 380 list_del(&priv->rx_reorder_tbl_ptr); 381 list_del(&priv->sta_list); 382 list_del(&priv->auto_tdls_list); 383 } 384 } 385 } 386 387 /* 388 * This function performs cleanup for adapter structure. 389 * 390 * The cleanup is done recursively, by canceling all pending 391 * commands, freeing the member buffers previously allocated 392 * (command buffers, scan table buffer, sleep confirm command 393 * buffer), stopping the timers and calling the cleanup routines 394 * for every interface. 395 */ 396 static void 397 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 398 { 399 del_timer(&adapter->wakeup_timer); 400 mwifiex_cancel_all_pending_cmd(adapter); 401 wake_up_interruptible(&adapter->cmd_wait_q.wait); 402 wake_up_interruptible(&adapter->hs_activate_wait_q); 403 } 404 405 void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter) 406 { 407 mwifiex_invalidate_lists(adapter); 408 409 /* Free command buffer */ 410 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n"); 411 mwifiex_free_cmd_buffer(adapter); 412 413 if (adapter->sleep_cfm) 414 dev_kfree_skb_any(adapter->sleep_cfm); 415 } 416 417 /* 418 * This function intializes the lock variables and 419 * the list heads. 420 */ 421 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 422 { 423 struct mwifiex_private *priv; 424 s32 i, j; 425 426 spin_lock_init(&adapter->int_lock); 427 spin_lock_init(&adapter->main_proc_lock); 428 spin_lock_init(&adapter->mwifiex_cmd_lock); 429 spin_lock_init(&adapter->queue_lock); 430 for (i = 0; i < adapter->priv_num; i++) { 431 if (adapter->priv[i]) { 432 priv = adapter->priv[i]; 433 spin_lock_init(&priv->rx_pkt_lock); 434 spin_lock_init(&priv->wmm.ra_list_spinlock); 435 spin_lock_init(&priv->curr_bcn_buf_lock); 436 spin_lock_init(&priv->sta_list_spinlock); 437 spin_lock_init(&priv->auto_tdls_lock); 438 } 439 } 440 441 /* Initialize cmd_free_q */ 442 INIT_LIST_HEAD(&adapter->cmd_free_q); 443 /* Initialize cmd_pending_q */ 444 INIT_LIST_HEAD(&adapter->cmd_pending_q); 445 /* Initialize scan_pending_q */ 446 INIT_LIST_HEAD(&adapter->scan_pending_q); 447 448 spin_lock_init(&adapter->cmd_free_q_lock); 449 spin_lock_init(&adapter->cmd_pending_q_lock); 450 spin_lock_init(&adapter->scan_pending_q_lock); 451 spin_lock_init(&adapter->rx_proc_lock); 452 453 skb_queue_head_init(&adapter->rx_data_q); 454 skb_queue_head_init(&adapter->tx_data_q); 455 456 for (i = 0; i < adapter->priv_num; ++i) { 457 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 458 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 459 } 460 461 for (i = 0; i < adapter->priv_num; i++) { 462 if (!adapter->priv[i]) 463 continue; 464 priv = adapter->priv[i]; 465 for (j = 0; j < MAX_NUM_TID; ++j) 466 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 467 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 468 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 469 INIT_LIST_HEAD(&priv->sta_list); 470 INIT_LIST_HEAD(&priv->auto_tdls_list); 471 skb_queue_head_init(&priv->tdls_txq); 472 skb_queue_head_init(&priv->bypass_txq); 473 474 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 475 spin_lock_init(&priv->rx_reorder_tbl_lock); 476 477 spin_lock_init(&priv->ack_status_lock); 478 idr_init(&priv->ack_status_frames); 479 } 480 481 return 0; 482 } 483 484 /* 485 * This function initializes the firmware. 486 * 487 * The following operations are performed sequentially - 488 * - Allocate adapter structure 489 * - Initialize the adapter structure 490 * - Initialize the private structure 491 * - Add BSS priority tables to the adapter structure 492 * - For each interface, send the init commands to firmware 493 * - Send the first command in command pending queue, if available 494 */ 495 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 496 { 497 int ret; 498 struct mwifiex_private *priv; 499 u8 i, first_sta = true; 500 int is_cmd_pend_q_empty; 501 unsigned long flags; 502 503 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 504 505 /* Allocate memory for member of adapter structure */ 506 ret = mwifiex_allocate_adapter(adapter); 507 if (ret) 508 return -1; 509 510 /* Initialize adapter structure */ 511 mwifiex_init_adapter(adapter); 512 513 for (i = 0; i < adapter->priv_num; i++) { 514 if (adapter->priv[i]) { 515 priv = adapter->priv[i]; 516 517 /* Initialize private structure */ 518 ret = mwifiex_init_priv(priv); 519 if (ret) 520 return -1; 521 } 522 } 523 if (adapter->mfg_mode) { 524 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 525 ret = -EINPROGRESS; 526 } else { 527 for (i = 0; i < adapter->priv_num; i++) { 528 if (adapter->priv[i]) { 529 ret = mwifiex_sta_init_cmd(adapter->priv[i], 530 first_sta, true); 531 if (ret == -1) 532 return -1; 533 534 first_sta = false; 535 } 536 537 538 539 } 540 } 541 542 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); 543 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 544 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); 545 if (!is_cmd_pend_q_empty) { 546 /* Send the first command in queue and return */ 547 if (mwifiex_main_process(adapter) != -1) 548 ret = -EINPROGRESS; 549 } else { 550 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 551 } 552 553 return ret; 554 } 555 556 /* 557 * This function deletes the BSS priority tables. 558 * 559 * The function traverses through all the allocated BSS priority nodes 560 * in every BSS priority table and frees them. 561 */ 562 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 563 { 564 int i; 565 struct mwifiex_adapter *adapter = priv->adapter; 566 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 567 struct list_head *head; 568 spinlock_t *lock; /* bss priority lock */ 569 unsigned long flags; 570 571 for (i = 0; i < adapter->priv_num; ++i) { 572 head = &adapter->bss_prio_tbl[i].bss_prio_head; 573 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 574 mwifiex_dbg(adapter, INFO, 575 "info: delete BSS priority table,\t" 576 "bss_type = %d, bss_num = %d, i = %d,\t" 577 "head = %p\n", 578 priv->bss_type, priv->bss_num, i, head); 579 580 { 581 spin_lock_irqsave(lock, flags); 582 if (list_empty(head)) { 583 spin_unlock_irqrestore(lock, flags); 584 continue; 585 } 586 list_for_each_entry_safe(bssprio_node, tmp_node, head, 587 list) { 588 if (bssprio_node->priv == priv) { 589 mwifiex_dbg(adapter, INFO, 590 "info: Delete\t" 591 "node %p, next = %p\n", 592 bssprio_node, tmp_node); 593 list_del(&bssprio_node->list); 594 kfree(bssprio_node); 595 } 596 } 597 spin_unlock_irqrestore(lock, flags); 598 } 599 } 600 } 601 602 /* 603 * This function frees the private structure, including cleans 604 * up the TX and RX queues and frees the BSS priority tables. 605 */ 606 void mwifiex_free_priv(struct mwifiex_private *priv) 607 { 608 mwifiex_clean_txrx(priv); 609 mwifiex_delete_bss_prio_tbl(priv); 610 mwifiex_free_curr_bcn(priv); 611 } 612 613 /* 614 * This function is used to shutdown the driver. 615 * 616 * The following operations are performed sequentially - 617 * - Check if already shut down 618 * - Make sure the main process has stopped 619 * - Clean up the Tx and Rx queues 620 * - Delete BSS priority tables 621 * - Free the adapter 622 * - Notify completion 623 */ 624 void 625 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 626 { 627 struct mwifiex_private *priv; 628 s32 i; 629 unsigned long flags; 630 struct sk_buff *skb; 631 632 /* mwifiex already shutdown */ 633 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 634 return; 635 636 /* cancel current command */ 637 if (adapter->curr_cmd) { 638 mwifiex_dbg(adapter, WARN, 639 "curr_cmd is still in processing\n"); 640 del_timer_sync(&adapter->cmd_timer); 641 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 642 adapter->curr_cmd = NULL; 643 } 644 645 /* shut down mwifiex */ 646 mwifiex_dbg(adapter, MSG, 647 "info: shutdown mwifiex...\n"); 648 649 /* Clean up Tx/Rx queues and delete BSS priority table */ 650 for (i = 0; i < adapter->priv_num; i++) { 651 if (adapter->priv[i]) { 652 priv = adapter->priv[i]; 653 654 mwifiex_clean_auto_tdls(priv); 655 mwifiex_abort_cac(priv); 656 mwifiex_free_priv(priv); 657 } 658 } 659 660 atomic_set(&adapter->tx_queued, 0); 661 while ((skb = skb_dequeue(&adapter->tx_data_q))) 662 mwifiex_write_data_complete(adapter, skb, 0, 0); 663 664 spin_lock_irqsave(&adapter->rx_proc_lock, flags); 665 666 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 667 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 668 669 atomic_dec(&adapter->rx_pending); 670 priv = adapter->priv[rx_info->bss_num]; 671 if (priv) 672 priv->stats.rx_dropped++; 673 674 dev_kfree_skb_any(skb); 675 } 676 677 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); 678 679 mwifiex_adapter_cleanup(adapter); 680 681 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY; 682 } 683 684 /* 685 * This function downloads the firmware to the card. 686 * 687 * The actual download is preceded by two sanity checks - 688 * - Check if firmware is already running 689 * - Check if the interface is the winner to download the firmware 690 * 691 * ...and followed by another - 692 * - Check if the firmware is downloaded successfully 693 * 694 * After download is successfully completed, the host interrupts are enabled. 695 */ 696 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 697 struct mwifiex_fw_image *pmfw) 698 { 699 int ret; 700 u32 poll_num = 1; 701 702 if (adapter->if_ops.check_fw_status) { 703 /* check if firmware is already running */ 704 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 705 if (!ret) { 706 mwifiex_dbg(adapter, MSG, 707 "WLAN FW already running! Skip FW dnld\n"); 708 return 0; 709 } 710 } 711 712 /* check if we are the winner for downloading FW */ 713 if (adapter->if_ops.check_winner_status) { 714 adapter->winner = 0; 715 ret = adapter->if_ops.check_winner_status(adapter); 716 717 poll_num = MAX_FIRMWARE_POLL_TRIES; 718 if (ret) { 719 mwifiex_dbg(adapter, MSG, 720 "WLAN read winner status failed!\n"); 721 return ret; 722 } 723 724 if (!adapter->winner) { 725 mwifiex_dbg(adapter, MSG, 726 "WLAN is not the winner! Skip FW dnld\n"); 727 goto poll_fw; 728 } 729 } 730 731 if (pmfw) { 732 /* Download firmware with helper */ 733 ret = adapter->if_ops.prog_fw(adapter, pmfw); 734 if (ret) { 735 mwifiex_dbg(adapter, ERROR, 736 "prog_fw failed ret=%#x\n", ret); 737 return ret; 738 } 739 } 740 741 poll_fw: 742 /* Check if the firmware is downloaded successfully or not */ 743 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 744 if (ret) 745 mwifiex_dbg(adapter, ERROR, 746 "FW failed to be active in time\n"); 747 748 return ret; 749 } 750 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw); 751