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(struct timer_list *t) 56 { 57 struct mwifiex_adapter *adapter = from_timer(adapter, t, wakeup_timer); 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 static void fw_dump_timer_fn(struct timer_list *t) 68 { 69 struct mwifiex_adapter *adapter = from_timer(adapter, t, devdump_timer); 70 71 mwifiex_upload_device_dump(adapter); 72 } 73 74 /* 75 * This function initializes the private structure and sets default 76 * values to the members. 77 * 78 * Additionally, it also initializes all the locks and sets up all the 79 * lists. 80 */ 81 int mwifiex_init_priv(struct mwifiex_private *priv) 82 { 83 u32 i; 84 85 priv->media_connected = false; 86 eth_broadcast_addr(priv->curr_addr); 87 priv->port_open = false; 88 priv->usb_port = MWIFIEX_USB_EP_DATA; 89 priv->pkt_tx_ctrl = 0; 90 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED; 91 priv->data_rate = 0; /* Initially indicate the rate as auto */ 92 priv->is_data_rate_auto = true; 93 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR; 94 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR; 95 96 priv->sec_info.wep_enabled = 0; 97 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM; 98 priv->sec_info.encryption_mode = 0; 99 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++) 100 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key)); 101 priv->wep_key_curr_index = 0; 102 priv->curr_pkt_filter = HostCmd_ACT_MAC_DYNAMIC_BW_ENABLE | 103 HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON | 104 HostCmd_ACT_MAC_ETHERNETII_ENABLE; 105 106 priv->beacon_period = 100; /* beacon interval */ 107 priv->attempted_bss_desc = NULL; 108 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params)); 109 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL; 110 111 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid)); 112 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid)); 113 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf)); 114 priv->assoc_rsp_size = 0; 115 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; 116 priv->atim_window = 0; 117 priv->adhoc_state = ADHOC_IDLE; 118 priv->tx_power_level = 0; 119 priv->max_tx_power_level = 0; 120 priv->min_tx_power_level = 0; 121 priv->tx_ant = 0; 122 priv->rx_ant = 0; 123 priv->tx_rate = 0; 124 priv->rxpd_htinfo = 0; 125 priv->rxpd_rate = 0; 126 priv->rate_bitmap = 0; 127 priv->data_rssi_last = 0; 128 priv->data_rssi_avg = 0; 129 priv->data_nf_avg = 0; 130 priv->data_nf_last = 0; 131 priv->bcn_rssi_last = 0; 132 priv->bcn_rssi_avg = 0; 133 priv->bcn_nf_avg = 0; 134 priv->bcn_nf_last = 0; 135 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie)); 136 memset(&priv->aes_key, 0, sizeof(priv->aes_key)); 137 priv->wpa_ie_len = 0; 138 priv->wpa_is_gtk_set = false; 139 140 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf)); 141 priv->assoc_tlv_buf_len = 0; 142 memset(&priv->wps, 0, sizeof(priv->wps)); 143 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf)); 144 priv->gen_ie_buf_len = 0; 145 memset(priv->vs_ie, 0, sizeof(priv->vs_ie)); 146 147 priv->wmm_required = true; 148 priv->wmm_enabled = false; 149 priv->wmm_qosinfo = 0; 150 priv->curr_bcn_buf = NULL; 151 priv->curr_bcn_size = 0; 152 priv->wps_ie = NULL; 153 priv->wps_ie_len = 0; 154 priv->ap_11n_enabled = 0; 155 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg)); 156 157 priv->scan_block = false; 158 159 priv->csa_chan = 0; 160 priv->csa_expire_time = 0; 161 priv->del_list_idx = 0; 162 priv->hs2_enabled = false; 163 priv->check_tdls_tx = false; 164 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID); 165 166 mwifiex_init_11h_params(priv); 167 168 return mwifiex_add_bss_prio_tbl(priv); 169 } 170 171 /* 172 * This function allocates buffers for members of the adapter 173 * structure. 174 * 175 * The memory allocated includes scan table, command buffers, and 176 * sleep confirm command buffer. In addition, the queues are 177 * also initialized. 178 */ 179 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter) 180 { 181 int ret; 182 183 /* Allocate command buffer */ 184 ret = mwifiex_alloc_cmd_buffer(adapter); 185 if (ret) { 186 mwifiex_dbg(adapter, ERROR, 187 "%s: failed to alloc cmd buffer\n", 188 __func__); 189 return -1; 190 } 191 192 adapter->sleep_cfm = 193 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm) 194 + INTF_HEADER_LEN); 195 196 if (!adapter->sleep_cfm) { 197 mwifiex_dbg(adapter, ERROR, 198 "%s: failed to alloc sleep cfm\t" 199 " cmd buffer\n", __func__); 200 return -1; 201 } 202 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN); 203 204 return 0; 205 } 206 207 /* 208 * This function initializes the adapter structure and sets default 209 * values to the members of adapter. 210 * 211 * This also initializes the WMM related parameters in the driver private 212 * structures. 213 */ 214 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter) 215 { 216 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL; 217 218 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm)); 219 220 adapter->cmd_sent = false; 221 222 if (adapter->iface_type == MWIFIEX_SDIO) 223 adapter->data_sent = true; 224 else 225 adapter->data_sent = false; 226 227 if (adapter->iface_type == MWIFIEX_USB) 228 adapter->intf_hdr_len = 0; 229 else 230 adapter->intf_hdr_len = INTF_HEADER_LEN; 231 232 adapter->cmd_resp_received = false; 233 adapter->event_received = false; 234 adapter->data_received = false; 235 236 adapter->surprise_removed = false; 237 238 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 239 240 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; 241 adapter->ps_state = PS_STATE_AWAKE; 242 adapter->need_to_wakeup = false; 243 244 adapter->scan_mode = HostCmd_BSS_MODE_ANY; 245 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME; 246 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME; 247 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME; 248 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME; 249 250 adapter->scan_probes = 1; 251 252 adapter->multiple_dtim = 1; 253 254 adapter->local_listen_interval = 0; /* default value in firmware 255 will be used */ 256 257 adapter->is_deep_sleep = false; 258 259 adapter->delay_null_pkt = false; 260 adapter->delay_to_ps = 1000; 261 adapter->enhanced_ps_mode = PS_MODE_AUTO; 262 263 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by 264 default */ 265 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by 266 default */ 267 adapter->pm_wakeup_card_req = false; 268 269 adapter->pm_wakeup_fw_try = false; 270 271 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 272 273 adapter->is_hs_configured = false; 274 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF); 275 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF; 276 adapter->hs_cfg.gap = HS_CFG_GAP_DEF; 277 adapter->hs_activated = false; 278 279 memset(adapter->event_body, 0, sizeof(adapter->event_body)); 280 adapter->hw_dot_11n_dev_cap = 0; 281 adapter->hw_dev_mcs_support = 0; 282 adapter->sec_chan_offset = 0; 283 adapter->adhoc_11n_enabled = false; 284 285 mwifiex_wmm_init(adapter); 286 atomic_set(&adapter->tx_hw_pending, 0); 287 288 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) 289 adapter->sleep_cfm->data; 290 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); 291 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 292 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); 293 sleep_cfm_buf->result = 0; 294 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); 295 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); 296 297 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params)); 298 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); 299 adapter->tx_lock_flag = false; 300 adapter->null_pkt_interval = 0; 301 adapter->fw_bands = 0; 302 adapter->config_bands = 0; 303 adapter->adhoc_start_band = 0; 304 adapter->scan_channels = NULL; 305 adapter->fw_release_number = 0; 306 adapter->fw_cap_info = 0; 307 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); 308 adapter->event_cause = 0; 309 adapter->region_code = 0; 310 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; 311 adapter->adhoc_awake_period = 0; 312 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); 313 adapter->arp_filter_size = 0; 314 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; 315 adapter->mfg_mode = mfg_mode; 316 adapter->key_api_major_ver = 0; 317 adapter->key_api_minor_ver = 0; 318 eth_broadcast_addr(adapter->perm_addr); 319 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 320 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 321 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 322 adapter->active_scan_triggered = false; 323 timer_setup(&adapter->wakeup_timer, wakeup_timer_fn, 0); 324 adapter->devdump_len = 0; 325 timer_setup(&adapter->devdump_timer, fw_dump_timer_fn, 0); 326 } 327 328 /* 329 * This function sets trans_start per tx_queue 330 */ 331 void mwifiex_set_trans_start(struct net_device *dev) 332 { 333 int i; 334 335 for (i = 0; i < dev->num_tx_queues; i++) 336 netdev_get_tx_queue(dev, i)->trans_start = jiffies; 337 338 netif_trans_update(dev); 339 } 340 341 /* 342 * This function wakes up all queues in net_device 343 */ 344 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 345 struct mwifiex_adapter *adapter) 346 { 347 unsigned long dev_queue_flags; 348 349 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 350 netif_tx_wake_all_queues(netdev); 351 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 352 } 353 354 /* 355 * This function stops all queues in net_device 356 */ 357 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 358 struct mwifiex_adapter *adapter) 359 { 360 unsigned long dev_queue_flags; 361 362 spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); 363 netif_tx_stop_all_queues(netdev); 364 spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); 365 } 366 367 /* 368 * This function invalidates the list heads. 369 */ 370 static void mwifiex_invalidate_lists(struct mwifiex_adapter *adapter) 371 { 372 struct mwifiex_private *priv; 373 s32 i, j; 374 375 list_del(&adapter->cmd_free_q); 376 list_del(&adapter->cmd_pending_q); 377 list_del(&adapter->scan_pending_q); 378 379 for (i = 0; i < adapter->priv_num; i++) 380 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 381 382 for (i = 0; i < adapter->priv_num; i++) { 383 if (adapter->priv[i]) { 384 priv = adapter->priv[i]; 385 for (j = 0; j < MAX_NUM_TID; ++j) 386 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 387 list_del(&priv->tx_ba_stream_tbl_ptr); 388 list_del(&priv->rx_reorder_tbl_ptr); 389 list_del(&priv->sta_list); 390 list_del(&priv->auto_tdls_list); 391 } 392 } 393 } 394 395 /* 396 * This function performs cleanup for adapter structure. 397 * 398 * The cleanup is done recursively, by canceling all pending 399 * commands, freeing the member buffers previously allocated 400 * (command buffers, scan table buffer, sleep confirm command 401 * buffer), stopping the timers and calling the cleanup routines 402 * for every interface. 403 */ 404 static void 405 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 406 { 407 del_timer(&adapter->wakeup_timer); 408 del_timer_sync(&adapter->devdump_timer); 409 mwifiex_cancel_all_pending_cmd(adapter); 410 wake_up_interruptible(&adapter->cmd_wait_q.wait); 411 wake_up_interruptible(&adapter->hs_activate_wait_q); 412 } 413 414 void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter) 415 { 416 mwifiex_invalidate_lists(adapter); 417 418 /* Free command buffer */ 419 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n"); 420 mwifiex_free_cmd_buffer(adapter); 421 422 if (adapter->sleep_cfm) 423 dev_kfree_skb_any(adapter->sleep_cfm); 424 } 425 426 /* 427 * This function intializes the lock variables and 428 * the list heads. 429 */ 430 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 431 { 432 struct mwifiex_private *priv; 433 s32 i, j; 434 435 spin_lock_init(&adapter->int_lock); 436 spin_lock_init(&adapter->main_proc_lock); 437 spin_lock_init(&adapter->mwifiex_cmd_lock); 438 spin_lock_init(&adapter->queue_lock); 439 for (i = 0; i < adapter->priv_num; i++) { 440 if (adapter->priv[i]) { 441 priv = adapter->priv[i]; 442 spin_lock_init(&priv->rx_pkt_lock); 443 spin_lock_init(&priv->wmm.ra_list_spinlock); 444 spin_lock_init(&priv->curr_bcn_buf_lock); 445 spin_lock_init(&priv->sta_list_spinlock); 446 spin_lock_init(&priv->auto_tdls_lock); 447 } 448 } 449 450 /* Initialize cmd_free_q */ 451 INIT_LIST_HEAD(&adapter->cmd_free_q); 452 /* Initialize cmd_pending_q */ 453 INIT_LIST_HEAD(&adapter->cmd_pending_q); 454 /* Initialize scan_pending_q */ 455 INIT_LIST_HEAD(&adapter->scan_pending_q); 456 457 spin_lock_init(&adapter->cmd_free_q_lock); 458 spin_lock_init(&adapter->cmd_pending_q_lock); 459 spin_lock_init(&adapter->scan_pending_q_lock); 460 spin_lock_init(&adapter->rx_proc_lock); 461 462 skb_queue_head_init(&adapter->rx_data_q); 463 skb_queue_head_init(&adapter->tx_data_q); 464 465 for (i = 0; i < adapter->priv_num; ++i) { 466 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 467 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 468 } 469 470 for (i = 0; i < adapter->priv_num; i++) { 471 if (!adapter->priv[i]) 472 continue; 473 priv = adapter->priv[i]; 474 for (j = 0; j < MAX_NUM_TID; ++j) 475 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 476 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 477 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 478 INIT_LIST_HEAD(&priv->sta_list); 479 INIT_LIST_HEAD(&priv->auto_tdls_list); 480 skb_queue_head_init(&priv->tdls_txq); 481 skb_queue_head_init(&priv->bypass_txq); 482 483 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 484 spin_lock_init(&priv->rx_reorder_tbl_lock); 485 486 spin_lock_init(&priv->ack_status_lock); 487 idr_init(&priv->ack_status_frames); 488 } 489 490 return 0; 491 } 492 493 /* 494 * This function initializes the firmware. 495 * 496 * The following operations are performed sequentially - 497 * - Allocate adapter structure 498 * - Initialize the adapter structure 499 * - Initialize the private structure 500 * - Add BSS priority tables to the adapter structure 501 * - For each interface, send the init commands to firmware 502 * - Send the first command in command pending queue, if available 503 */ 504 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 505 { 506 int ret; 507 struct mwifiex_private *priv; 508 u8 i, first_sta = true; 509 int is_cmd_pend_q_empty; 510 unsigned long flags; 511 512 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 513 514 /* Allocate memory for member of adapter structure */ 515 ret = mwifiex_allocate_adapter(adapter); 516 if (ret) 517 return -1; 518 519 /* Initialize adapter structure */ 520 mwifiex_init_adapter(adapter); 521 522 for (i = 0; i < adapter->priv_num; i++) { 523 if (adapter->priv[i]) { 524 priv = adapter->priv[i]; 525 526 /* Initialize private structure */ 527 ret = mwifiex_init_priv(priv); 528 if (ret) 529 return -1; 530 } 531 } 532 if (adapter->mfg_mode) { 533 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 534 ret = -EINPROGRESS; 535 } else { 536 for (i = 0; i < adapter->priv_num; i++) { 537 if (adapter->priv[i]) { 538 ret = mwifiex_sta_init_cmd(adapter->priv[i], 539 first_sta, true); 540 if (ret == -1) 541 return -1; 542 543 first_sta = false; 544 } 545 546 547 548 } 549 } 550 551 spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); 552 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 553 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); 554 if (!is_cmd_pend_q_empty) { 555 /* Send the first command in queue and return */ 556 if (mwifiex_main_process(adapter) != -1) 557 ret = -EINPROGRESS; 558 } else { 559 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 560 } 561 562 return ret; 563 } 564 565 /* 566 * This function deletes the BSS priority tables. 567 * 568 * The function traverses through all the allocated BSS priority nodes 569 * in every BSS priority table and frees them. 570 */ 571 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 572 { 573 int i; 574 struct mwifiex_adapter *adapter = priv->adapter; 575 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 576 struct list_head *head; 577 spinlock_t *lock; /* bss priority lock */ 578 unsigned long flags; 579 580 for (i = 0; i < adapter->priv_num; ++i) { 581 head = &adapter->bss_prio_tbl[i].bss_prio_head; 582 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 583 mwifiex_dbg(adapter, INFO, 584 "info: delete BSS priority table,\t" 585 "bss_type = %d, bss_num = %d, i = %d,\t" 586 "head = %p\n", 587 priv->bss_type, priv->bss_num, i, head); 588 589 { 590 spin_lock_irqsave(lock, flags); 591 list_for_each_entry_safe(bssprio_node, tmp_node, head, 592 list) { 593 if (bssprio_node->priv == priv) { 594 mwifiex_dbg(adapter, INFO, 595 "info: Delete\t" 596 "node %p, next = %p\n", 597 bssprio_node, tmp_node); 598 list_del(&bssprio_node->list); 599 kfree(bssprio_node); 600 } 601 } 602 spin_unlock_irqrestore(lock, flags); 603 } 604 } 605 } 606 607 /* 608 * This function frees the private structure, including cleans 609 * up the TX and RX queues and frees the BSS priority tables. 610 */ 611 void mwifiex_free_priv(struct mwifiex_private *priv) 612 { 613 mwifiex_clean_txrx(priv); 614 mwifiex_delete_bss_prio_tbl(priv); 615 mwifiex_free_curr_bcn(priv); 616 } 617 618 /* 619 * This function is used to shutdown the driver. 620 * 621 * The following operations are performed sequentially - 622 * - Check if already shut down 623 * - Make sure the main process has stopped 624 * - Clean up the Tx and Rx queues 625 * - Delete BSS priority tables 626 * - Free the adapter 627 * - Notify completion 628 */ 629 void 630 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 631 { 632 struct mwifiex_private *priv; 633 s32 i; 634 unsigned long flags; 635 struct sk_buff *skb; 636 637 /* mwifiex already shutdown */ 638 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 639 return; 640 641 /* cancel current command */ 642 if (adapter->curr_cmd) { 643 mwifiex_dbg(adapter, WARN, 644 "curr_cmd is still in processing\n"); 645 del_timer_sync(&adapter->cmd_timer); 646 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 647 adapter->curr_cmd = NULL; 648 } 649 650 /* shut down mwifiex */ 651 mwifiex_dbg(adapter, MSG, 652 "info: shutdown mwifiex...\n"); 653 654 /* Clean up Tx/Rx queues and delete BSS priority table */ 655 for (i = 0; i < adapter->priv_num; i++) { 656 if (adapter->priv[i]) { 657 priv = adapter->priv[i]; 658 659 mwifiex_clean_auto_tdls(priv); 660 mwifiex_abort_cac(priv); 661 mwifiex_free_priv(priv); 662 } 663 } 664 665 atomic_set(&adapter->tx_queued, 0); 666 while ((skb = skb_dequeue(&adapter->tx_data_q))) 667 mwifiex_write_data_complete(adapter, skb, 0, 0); 668 669 spin_lock_irqsave(&adapter->rx_proc_lock, flags); 670 671 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 672 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 673 674 atomic_dec(&adapter->rx_pending); 675 priv = adapter->priv[rx_info->bss_num]; 676 if (priv) 677 priv->stats.rx_dropped++; 678 679 dev_kfree_skb_any(skb); 680 } 681 682 spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); 683 684 mwifiex_adapter_cleanup(adapter); 685 686 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY; 687 } 688 689 /* 690 * This function downloads the firmware to the card. 691 * 692 * The actual download is preceded by two sanity checks - 693 * - Check if firmware is already running 694 * - Check if the interface is the winner to download the firmware 695 * 696 * ...and followed by another - 697 * - Check if the firmware is downloaded successfully 698 * 699 * After download is successfully completed, the host interrupts are enabled. 700 */ 701 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 702 struct mwifiex_fw_image *pmfw) 703 { 704 int ret; 705 u32 poll_num = 1; 706 707 if (adapter->if_ops.check_fw_status) { 708 /* check if firmware is already running */ 709 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 710 if (!ret) { 711 mwifiex_dbg(adapter, MSG, 712 "WLAN FW already running! Skip FW dnld\n"); 713 return 0; 714 } 715 } 716 717 /* check if we are the winner for downloading FW */ 718 if (adapter->if_ops.check_winner_status) { 719 adapter->winner = 0; 720 ret = adapter->if_ops.check_winner_status(adapter); 721 722 poll_num = MAX_FIRMWARE_POLL_TRIES; 723 if (ret) { 724 mwifiex_dbg(adapter, MSG, 725 "WLAN read winner status failed!\n"); 726 return ret; 727 } 728 729 if (!adapter->winner) { 730 mwifiex_dbg(adapter, MSG, 731 "WLAN is not the winner! Skip FW dnld\n"); 732 goto poll_fw; 733 } 734 } 735 736 if (pmfw) { 737 /* Download firmware with helper */ 738 ret = adapter->if_ops.prog_fw(adapter, pmfw); 739 if (ret) { 740 mwifiex_dbg(adapter, ERROR, 741 "prog_fw failed ret=%#x\n", ret); 742 return ret; 743 } 744 } 745 746 poll_fw: 747 /* Check if the firmware is downloaded successfully or not */ 748 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 749 if (ret) 750 mwifiex_dbg(adapter, ERROR, 751 "FW failed to be active in time\n"); 752 753 return ret; 754 } 755 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw); 756