diff options
Diffstat (limited to 'drivers/net/wireless/marvell/mwifiex/init.c')
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/init.c | 782 |
1 files changed, 782 insertions, 0 deletions
diff --git a/drivers/net/wireless/marvell/mwifiex/init.c b/drivers/net/wireless/marvell/mwifiex/init.c new file mode 100644 index 000000000000..6f7876ec31b7 --- /dev/null +++ b/drivers/net/wireless/marvell/mwifiex/init.c @@ -0,0 +1,782 @@ +/* + * Marvell Wireless LAN device driver: HW/FW Initialization + * + * Copyright (C) 2011-2014, Marvell International Ltd. + * + * This software file (the "File") is distributed by Marvell International + * Ltd. under the terms of the GNU General Public License Version 2, June 1991 + * (the "License"). You may use, redistribute and/or modify this File in + * accordance with the terms and conditions of the License, a copy of which + * is available by writing to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the + * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. + * + * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE + * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE + * ARE EXPRESSLY DISCLAIMED. The License provides additional details about + * this warranty disclaimer. + */ + +#include "decl.h" +#include "ioctl.h" +#include "util.h" +#include "fw.h" +#include "main.h" +#include "wmm.h" +#include "11n.h" + +/* + * This function adds a BSS priority table to the table list. + * + * The function allocates a new BSS priority table node and adds it to + * the end of BSS priority table list, kept in driver memory. + */ +static int mwifiex_add_bss_prio_tbl(struct mwifiex_private *priv) +{ + struct mwifiex_adapter *adapter = priv->adapter; + struct mwifiex_bss_prio_node *bss_prio; + struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl; + unsigned long flags; + + bss_prio = kzalloc(sizeof(struct mwifiex_bss_prio_node), GFP_KERNEL); + if (!bss_prio) + return -ENOMEM; + + bss_prio->priv = priv; + INIT_LIST_HEAD(&bss_prio->list); + + spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags); + list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head); + spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags); + + return 0; +} + +static void wakeup_timer_fn(unsigned long data) +{ + struct mwifiex_adapter *adapter = (struct mwifiex_adapter *)data; + + mwifiex_dbg(adapter, ERROR, "Firmware wakeup failed\n"); + adapter->hw_status = MWIFIEX_HW_STATUS_RESET; + mwifiex_cancel_all_pending_cmd(adapter); + + if (adapter->if_ops.card_reset) + adapter->if_ops.card_reset(adapter); +} + +/* + * This function initializes the private structure and sets default + * values to the members. + * + * Additionally, it also initializes all the locks and sets up all the + * lists. + */ +int mwifiex_init_priv(struct mwifiex_private *priv) +{ + u32 i; + + priv->media_connected = false; + eth_broadcast_addr(priv->curr_addr); + priv->port_open = false; + priv->usb_port = MWIFIEX_USB_EP_DATA; + priv->pkt_tx_ctrl = 0; + priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED; + priv->data_rate = 0; /* Initially indicate the rate as auto */ + priv->is_data_rate_auto = true; + priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR; + priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR; + + priv->sec_info.wep_enabled = 0; + priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM; + priv->sec_info.encryption_mode = 0; + for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++) + memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key)); + priv->wep_key_curr_index = 0; + priv->curr_pkt_filter = HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON | + HostCmd_ACT_MAC_ETHERNETII_ENABLE; + + priv->beacon_period = 100; /* beacon interval */ + priv->attempted_bss_desc = NULL; + memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params)); + priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL; + + memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid)); + memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid)); + memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf)); + priv->assoc_rsp_size = 0; + priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; + priv->atim_window = 0; + priv->adhoc_state = ADHOC_IDLE; + priv->tx_power_level = 0; + priv->max_tx_power_level = 0; + priv->min_tx_power_level = 0; + priv->tx_rate = 0; + priv->rxpd_htinfo = 0; + priv->rxpd_rate = 0; + priv->rate_bitmap = 0; + priv->data_rssi_last = 0; + priv->data_rssi_avg = 0; + priv->data_nf_avg = 0; + priv->data_nf_last = 0; + priv->bcn_rssi_last = 0; + priv->bcn_rssi_avg = 0; + priv->bcn_nf_avg = 0; + priv->bcn_nf_last = 0; + memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie)); + memset(&priv->aes_key, 0, sizeof(priv->aes_key)); + priv->wpa_ie_len = 0; + priv->wpa_is_gtk_set = false; + + memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf)); + priv->assoc_tlv_buf_len = 0; + memset(&priv->wps, 0, sizeof(priv->wps)); + memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf)); + priv->gen_ie_buf_len = 0; + memset(priv->vs_ie, 0, sizeof(priv->vs_ie)); + + priv->wmm_required = true; + priv->wmm_enabled = false; + priv->wmm_qosinfo = 0; + priv->curr_bcn_buf = NULL; + priv->curr_bcn_size = 0; + priv->wps_ie = NULL; + priv->wps_ie_len = 0; + priv->ap_11n_enabled = 0; + memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg)); + + priv->scan_block = false; + + priv->csa_chan = 0; + priv->csa_expire_time = 0; + priv->del_list_idx = 0; + priv->hs2_enabled = false; + priv->check_tdls_tx = false; + memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID); + + mwifiex_init_11h_params(priv); + + return mwifiex_add_bss_prio_tbl(priv); +} + +/* + * This function allocates buffers for members of the adapter + * structure. + * + * The memory allocated includes scan table, command buffers, and + * sleep confirm command buffer. In addition, the queues are + * also initialized. + */ +static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter) +{ + int ret; + + /* Allocate command buffer */ + ret = mwifiex_alloc_cmd_buffer(adapter); + if (ret) { + mwifiex_dbg(adapter, ERROR, + "%s: failed to alloc cmd buffer\n", + __func__); + return -1; + } + + adapter->sleep_cfm = + dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm) + + INTF_HEADER_LEN); + + if (!adapter->sleep_cfm) { + mwifiex_dbg(adapter, ERROR, + "%s: failed to alloc sleep cfm\t" + " cmd buffer\n", __func__); + return -1; + } + skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN); + + return 0; +} + +/* + * This function initializes the adapter structure and sets default + * values to the members of adapter. + * + * This also initializes the WMM related parameters in the driver private + * structures. + */ +static void mwifiex_init_adapter(struct mwifiex_adapter *adapter) +{ + struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL; + + skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm)); + + adapter->cmd_sent = false; + + if (adapter->iface_type == MWIFIEX_SDIO) + adapter->data_sent = true; + else + adapter->data_sent = false; + + adapter->cmd_resp_received = false; + adapter->event_received = false; + adapter->data_received = false; + + adapter->surprise_removed = false; + + adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; + + adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; + adapter->ps_state = PS_STATE_AWAKE; + adapter->need_to_wakeup = false; + + adapter->scan_mode = HostCmd_BSS_MODE_ANY; + adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME; + adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME; + adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME; + adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME; + + adapter->scan_probes = 1; + + adapter->multiple_dtim = 1; + + adapter->local_listen_interval = 0; /* default value in firmware + will be used */ + + adapter->is_deep_sleep = false; + + adapter->delay_null_pkt = false; + adapter->delay_to_ps = 1000; + adapter->enhanced_ps_mode = PS_MODE_AUTO; + + adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by + default */ + adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by + default */ + adapter->pm_wakeup_card_req = false; + + adapter->pm_wakeup_fw_try = false; + + adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; + + adapter->is_hs_configured = false; + adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF); + adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF; + adapter->hs_cfg.gap = HS_CFG_GAP_DEF; + adapter->hs_activated = false; + + memset(adapter->event_body, 0, sizeof(adapter->event_body)); + adapter->hw_dot_11n_dev_cap = 0; + adapter->hw_dev_mcs_support = 0; + adapter->sec_chan_offset = 0; + adapter->adhoc_11n_enabled = false; + + mwifiex_wmm_init(adapter); + + sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) + adapter->sleep_cfm->data; + memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); + sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); + sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); + sleep_cfm_buf->result = 0; + sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); + sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); + + memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params)); + memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); + adapter->tx_lock_flag = false; + adapter->null_pkt_interval = 0; + adapter->fw_bands = 0; + adapter->config_bands = 0; + adapter->adhoc_start_band = 0; + adapter->scan_channels = NULL; + adapter->fw_release_number = 0; + adapter->fw_cap_info = 0; + memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); + adapter->event_cause = 0; + adapter->region_code = 0; + adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; + adapter->adhoc_awake_period = 0; + memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); + adapter->arp_filter_size = 0; + adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; + adapter->key_api_major_ver = 0; + adapter->key_api_minor_ver = 0; + eth_broadcast_addr(adapter->perm_addr); + adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; + adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; + adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; + adapter->active_scan_triggered = false; + setup_timer(&adapter->wakeup_timer, wakeup_timer_fn, + (unsigned long)adapter); +} + +/* + * This function sets trans_start per tx_queue + */ +void mwifiex_set_trans_start(struct net_device *dev) +{ + int i; + + for (i = 0; i < dev->num_tx_queues; i++) + netdev_get_tx_queue(dev, i)->trans_start = jiffies; + + dev->trans_start = jiffies; +} + +/* + * This function wakes up all queues in net_device + */ +void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, + struct mwifiex_adapter *adapter) +{ + unsigned long dev_queue_flags; + unsigned int i; + + spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); + + for (i = 0; i < netdev->num_tx_queues; i++) { + struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); + + if (netif_tx_queue_stopped(txq)) + netif_tx_wake_queue(txq); + } + + spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); +} + +/* + * This function stops all queues in net_device + */ +void mwifiex_stop_net_dev_queue(struct net_device *netdev, + struct mwifiex_adapter *adapter) +{ + unsigned long dev_queue_flags; + unsigned int i; + + spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags); + + for (i = 0; i < netdev->num_tx_queues; i++) { + struct netdev_queue *txq = netdev_get_tx_queue(netdev, i); + + if (!netif_tx_queue_stopped(txq)) + netif_tx_stop_queue(txq); + } + + spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags); +} + +/* + * This function releases the lock variables and frees the locks and + * associated locks. + */ +static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter) +{ + struct mwifiex_private *priv; + s32 i, j; + + /* Free lists */ + list_del(&adapter->cmd_free_q); + list_del(&adapter->cmd_pending_q); + list_del(&adapter->scan_pending_q); + + for (i = 0; i < adapter->priv_num; i++) + list_del(&adapter->bss_prio_tbl[i].bss_prio_head); + + for (i = 0; i < adapter->priv_num; i++) { + if (adapter->priv[i]) { + priv = adapter->priv[i]; + for (j = 0; j < MAX_NUM_TID; ++j) + list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); + list_del(&priv->tx_ba_stream_tbl_ptr); + list_del(&priv->rx_reorder_tbl_ptr); + list_del(&priv->sta_list); + list_del(&priv->auto_tdls_list); + } + } +} + +/* + * This function performs cleanup for adapter structure. + * + * The cleanup is done recursively, by canceling all pending + * commands, freeing the member buffers previously allocated + * (command buffers, scan table buffer, sleep confirm command + * buffer), stopping the timers and calling the cleanup routines + * for every interface. + */ +static void +mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) +{ + int idx; + + if (!adapter) { + pr_err("%s: adapter is NULL\n", __func__); + return; + } + + del_timer(&adapter->wakeup_timer); + mwifiex_cancel_all_pending_cmd(adapter); + wake_up_interruptible(&adapter->cmd_wait_q.wait); + wake_up_interruptible(&adapter->hs_activate_wait_q); + + /* Free lock variables */ + mwifiex_free_lock_list(adapter); + + /* Free command buffer */ + mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n"); + mwifiex_free_cmd_buffer(adapter); + + for (idx = 0; idx < adapter->num_mem_types; idx++) { + struct memory_type_mapping *entry = + &adapter->mem_type_mapping_tbl[idx]; + + if (entry->mem_ptr) { + vfree(entry->mem_ptr); + entry->mem_ptr = NULL; + } + entry->mem_size = 0; + } + + if (adapter->drv_info_dump) { + vfree(adapter->drv_info_dump); + adapter->drv_info_dump = NULL; + adapter->drv_info_size = 0; + } + + if (adapter->sleep_cfm) + dev_kfree_skb_any(adapter->sleep_cfm); +} + +/* + * This function intializes the lock variables and + * the list heads. + */ +int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) +{ + struct mwifiex_private *priv; + s32 i, j; + + spin_lock_init(&adapter->mwifiex_lock); + spin_lock_init(&adapter->int_lock); + spin_lock_init(&adapter->main_proc_lock); + spin_lock_init(&adapter->mwifiex_cmd_lock); + spin_lock_init(&adapter->queue_lock); + for (i = 0; i < adapter->priv_num; i++) { + if (adapter->priv[i]) { + priv = adapter->priv[i]; + spin_lock_init(&priv->rx_pkt_lock); + spin_lock_init(&priv->wmm.ra_list_spinlock); + spin_lock_init(&priv->curr_bcn_buf_lock); + spin_lock_init(&priv->sta_list_spinlock); + spin_lock_init(&priv->auto_tdls_lock); + } + } + + /* Initialize cmd_free_q */ + INIT_LIST_HEAD(&adapter->cmd_free_q); + /* Initialize cmd_pending_q */ + INIT_LIST_HEAD(&adapter->cmd_pending_q); + /* Initialize scan_pending_q */ + INIT_LIST_HEAD(&adapter->scan_pending_q); + + spin_lock_init(&adapter->cmd_free_q_lock); + spin_lock_init(&adapter->cmd_pending_q_lock); + spin_lock_init(&adapter->scan_pending_q_lock); + spin_lock_init(&adapter->rx_proc_lock); + + skb_queue_head_init(&adapter->rx_data_q); + skb_queue_head_init(&adapter->tx_data_q); + + for (i = 0; i < adapter->priv_num; ++i) { + INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); + spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); + } + + for (i = 0; i < adapter->priv_num; i++) { + if (!adapter->priv[i]) + continue; + priv = adapter->priv[i]; + for (j = 0; j < MAX_NUM_TID; ++j) + INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); + INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); + INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); + INIT_LIST_HEAD(&priv->sta_list); + INIT_LIST_HEAD(&priv->auto_tdls_list); + skb_queue_head_init(&priv->tdls_txq); + skb_queue_head_init(&priv->bypass_txq); + + spin_lock_init(&priv->tx_ba_stream_tbl_lock); + spin_lock_init(&priv->rx_reorder_tbl_lock); + + spin_lock_init(&priv->ack_status_lock); + idr_init(&priv->ack_status_frames); + } + + return 0; +} + +/* + * This function initializes the firmware. + * + * The following operations are performed sequentially - + * - Allocate adapter structure + * - Initialize the adapter structure + * - Initialize the private structure + * - Add BSS priority tables to the adapter structure + * - For each interface, send the init commands to firmware + * - Send the first command in command pending queue, if available + */ +int mwifiex_init_fw(struct mwifiex_adapter *adapter) +{ + int ret; + struct mwifiex_private *priv; + u8 i, first_sta = true; + int is_cmd_pend_q_empty; + unsigned long flags; + + adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; + + /* Allocate memory for member of adapter structure */ + ret = mwifiex_allocate_adapter(adapter); + if (ret) + return -1; + + /* Initialize adapter structure */ + mwifiex_init_adapter(adapter); + + for (i = 0; i < adapter->priv_num; i++) { + if (adapter->priv[i]) { + priv = adapter->priv[i]; + + /* Initialize private structure */ + ret = mwifiex_init_priv(priv); + if (ret) + return -1; + } + } + + for (i = 0; i < adapter->priv_num; i++) { + if (adapter->priv[i]) { + ret = mwifiex_sta_init_cmd(adapter->priv[i], first_sta, + true); + if (ret == -1) + return -1; + + first_sta = false; + } + } + + spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); + is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); + spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); + if (!is_cmd_pend_q_empty) { + /* Send the first command in queue and return */ + if (mwifiex_main_process(adapter) != -1) + ret = -EINPROGRESS; + } else { + adapter->hw_status = MWIFIEX_HW_STATUS_READY; + } + + return ret; +} + +/* + * This function deletes the BSS priority tables. + * + * The function traverses through all the allocated BSS priority nodes + * in every BSS priority table and frees them. + */ +static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) +{ + int i; + struct mwifiex_adapter *adapter = priv->adapter; + struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; + struct list_head *head; + spinlock_t *lock; /* bss priority lock */ + unsigned long flags; + + for (i = 0; i < adapter->priv_num; ++i) { + head = &adapter->bss_prio_tbl[i].bss_prio_head; + lock = &adapter->bss_prio_tbl[i].bss_prio_lock; + mwifiex_dbg(adapter, INFO, + "info: delete BSS priority table,\t" + "bss_type = %d, bss_num = %d, i = %d,\t" + "head = %p\n", + priv->bss_type, priv->bss_num, i, head); + + { + spin_lock_irqsave(lock, flags); + if (list_empty(head)) { + spin_unlock_irqrestore(lock, flags); + continue; + } + list_for_each_entry_safe(bssprio_node, tmp_node, head, + list) { + if (bssprio_node->priv == priv) { + mwifiex_dbg(adapter, INFO, + "info: Delete\t" + "node %p, next = %p\n", + bssprio_node, tmp_node); + list_del(&bssprio_node->list); + kfree(bssprio_node); + } + } + spin_unlock_irqrestore(lock, flags); + } + } +} + +/* + * This function frees the private structure, including cleans + * up the TX and RX queues and frees the BSS priority tables. + */ +void mwifiex_free_priv(struct mwifiex_private *priv) +{ + mwifiex_clean_txrx(priv); + mwifiex_delete_bss_prio_tbl(priv); + mwifiex_free_curr_bcn(priv); +} + +/* + * This function is used to shutdown the driver. + * + * The following operations are performed sequentially - + * - Check if already shut down + * - Make sure the main process has stopped + * - Clean up the Tx and Rx queues + * - Delete BSS priority tables + * - Free the adapter + * - Notify completion + */ +int +mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) +{ + int ret = -EINPROGRESS; + struct mwifiex_private *priv; + s32 i; + unsigned long flags; + struct sk_buff *skb; + + /* mwifiex already shutdown */ + if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) + return 0; + + adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING; + /* wait for mwifiex_process to complete */ + if (adapter->mwifiex_processing) { + mwifiex_dbg(adapter, WARN, + "main process is still running\n"); + return ret; + } + + /* cancel current command */ + if (adapter->curr_cmd) { + mwifiex_dbg(adapter, WARN, + "curr_cmd is still in processing\n"); + del_timer_sync(&adapter->cmd_timer); + mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); + adapter->curr_cmd = NULL; + } + + /* shut down mwifiex */ + mwifiex_dbg(adapter, MSG, + "info: shutdown mwifiex...\n"); + + /* Clean up Tx/Rx queues and delete BSS priority table */ + for (i = 0; i < adapter->priv_num; i++) { + if (adapter->priv[i]) { + priv = adapter->priv[i]; + + mwifiex_clean_auto_tdls(priv); + mwifiex_abort_cac(priv); + mwifiex_clean_txrx(priv); + mwifiex_delete_bss_prio_tbl(priv); + } + } + + atomic_set(&adapter->tx_queued, 0); + while ((skb = skb_dequeue(&adapter->tx_data_q))) + mwifiex_write_data_complete(adapter, skb, 0, 0); + + spin_lock_irqsave(&adapter->rx_proc_lock, flags); + + while ((skb = skb_dequeue(&adapter->rx_data_q))) { + struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); + + atomic_dec(&adapter->rx_pending); + priv = adapter->priv[rx_info->bss_num]; + if (priv) + priv->stats.rx_dropped++; + + dev_kfree_skb_any(skb); + } + + spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); + + spin_lock(&adapter->mwifiex_lock); + + mwifiex_adapter_cleanup(adapter); + + spin_unlock(&adapter->mwifiex_lock); + + /* Notify completion */ + ret = mwifiex_shutdown_fw_complete(adapter); + + return ret; +} + +/* + * This function downloads the firmware to the card. + * + * The actual download is preceded by two sanity checks - + * - Check if firmware is already running + * - Check if the interface is the winner to download the firmware + * + * ...and followed by another - + * - Check if the firmware is downloaded successfully + * + * After download is successfully completed, the host interrupts are enabled. + */ +int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, + struct mwifiex_fw_image *pmfw) +{ + int ret; + u32 poll_num = 1; + + if (adapter->if_ops.check_fw_status) { + adapter->winner = 0; + + /* check if firmware is already running */ + ret = adapter->if_ops.check_fw_status(adapter, poll_num); + if (!ret) { + mwifiex_dbg(adapter, MSG, + "WLAN FW already running! Skip FW dnld\n"); + return 0; + } + + poll_num = MAX_FIRMWARE_POLL_TRIES; + + /* check if we are the winner for downloading FW */ + if (!adapter->winner) { + mwifiex_dbg(adapter, MSG, + "FW already running! Skip FW dnld\n"); + goto poll_fw; + } + } + + if (pmfw) { + /* Download firmware with helper */ + ret = adapter->if_ops.prog_fw(adapter, pmfw); + if (ret) { + mwifiex_dbg(adapter, ERROR, + "prog_fw failed ret=%#x\n", ret); + return ret; + } + } + +poll_fw: + /* Check if the firmware is downloaded successfully or not */ + ret = adapter->if_ops.check_fw_status(adapter, poll_num); + if (ret) + mwifiex_dbg(adapter, ERROR, + "FW failed to be active in time\n"); + + return ret; +} |