diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/main.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/main.c | 1026 |
1 files changed, 0 insertions, 1026 deletions
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c deleted file mode 100644 index e15ab72fb03d..000000000000 --- a/drivers/net/wireless/mwifiex/main.c +++ /dev/null @@ -1,1026 +0,0 @@ -/* - * Marvell Wireless LAN device driver: major functions - * - * Copyright (C) 2011, 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 "main.h" -#include "wmm.h" -#include "cfg80211.h" -#include "11n.h" - -#define VERSION "1.0" - -const char driver_version[] = "mwifiex " VERSION " (%s) "; -static char *cal_data_cfg; -module_param(cal_data_cfg, charp, 0); - -static void scan_delay_timer_fn(unsigned long data) -{ - struct mwifiex_private *priv = (struct mwifiex_private *)data; - struct mwifiex_adapter *adapter = priv->adapter; - struct cmd_ctrl_node *cmd_node, *tmp_node; - unsigned long flags; - - if (adapter->surprise_removed) - return; - - if (adapter->scan_delay_cnt == MWIFIEX_MAX_SCAN_DELAY_CNT) { - /* - * Abort scan operation by cancelling all pending scan - * commands - */ - spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); - list_for_each_entry_safe(cmd_node, tmp_node, - &adapter->scan_pending_q, list) { - list_del(&cmd_node->list); - mwifiex_insert_cmd_to_free_q(adapter, cmd_node); - } - spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); - - spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); - adapter->scan_processing = false; - adapter->scan_delay_cnt = 0; - adapter->empty_tx_q_cnt = 0; - spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); - - if (priv->scan_request) { - dev_dbg(adapter->dev, "info: aborting scan\n"); - cfg80211_scan_done(priv->scan_request, 1); - priv->scan_request = NULL; - } else { - priv->scan_aborting = false; - dev_dbg(adapter->dev, "info: scan already aborted\n"); - } - goto done; - } - - if (!atomic_read(&priv->adapter->is_tx_received)) { - adapter->empty_tx_q_cnt++; - if (adapter->empty_tx_q_cnt == MWIFIEX_MAX_EMPTY_TX_Q_CNT) { - /* - * No Tx traffic for 200msec. Get scan command from - * scan pending queue and put to cmd pending queue to - * resume scan operation - */ - adapter->scan_delay_cnt = 0; - adapter->empty_tx_q_cnt = 0; - spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); - cmd_node = list_first_entry(&adapter->scan_pending_q, - struct cmd_ctrl_node, list); - list_del(&cmd_node->list); - spin_unlock_irqrestore(&adapter->scan_pending_q_lock, - flags); - - mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, - true); - queue_work(adapter->workqueue, &adapter->main_work); - goto done; - } - } else { - adapter->empty_tx_q_cnt = 0; - } - - /* Delay scan operation further by 20msec */ - mod_timer(&priv->scan_delay_timer, jiffies + - msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC)); - adapter->scan_delay_cnt++; - -done: - if (atomic_read(&priv->adapter->is_tx_received)) - atomic_set(&priv->adapter->is_tx_received, false); - - return; -} - -/* - * This function registers the device and performs all the necessary - * initializations. - * - * The following initialization operations are performed - - * - Allocate adapter structure - * - Save interface specific operations table in adapter - * - Call interface specific initialization routine - * - Allocate private structures - * - Set default adapter structure parameters - * - Initialize locks - * - * In case of any errors during inittialization, this function also ensures - * proper cleanup before exiting. - */ -static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops, - void **padapter) -{ - struct mwifiex_adapter *adapter; - int i; - - adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL); - if (!adapter) - return -ENOMEM; - - *padapter = adapter; - adapter->card = card; - - /* Save interface specific operations in adapter */ - memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops)); - - /* card specific initialization has been deferred until now .. */ - if (adapter->if_ops.init_if) - if (adapter->if_ops.init_if(adapter)) - goto error; - - adapter->priv_num = 0; - - for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) { - /* Allocate memory for private structure */ - adapter->priv[i] = - kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL); - if (!adapter->priv[i]) - goto error; - - adapter->priv[i]->adapter = adapter; - adapter->priv_num++; - - setup_timer(&adapter->priv[i]->scan_delay_timer, - scan_delay_timer_fn, - (unsigned long)adapter->priv[i]); - } - mwifiex_init_lock_list(adapter); - - init_timer(&adapter->cmd_timer); - adapter->cmd_timer.function = mwifiex_cmd_timeout_func; - adapter->cmd_timer.data = (unsigned long) adapter; - - return 0; - -error: - dev_dbg(adapter->dev, "info: leave mwifiex_register with error\n"); - - for (i = 0; i < adapter->priv_num; i++) - kfree(adapter->priv[i]); - - kfree(adapter); - - return -1; -} - -/* - * This function unregisters the device and performs all the necessary - * cleanups. - * - * The following cleanup operations are performed - - * - Free the timers - * - Free beacon buffers - * - Free private structures - * - Free adapter structure - */ -static int mwifiex_unregister(struct mwifiex_adapter *adapter) -{ - s32 i; - - del_timer(&adapter->cmd_timer); - - /* Free private structures */ - for (i = 0; i < adapter->priv_num; i++) { - if (adapter->priv[i]) { - mwifiex_free_curr_bcn(adapter->priv[i]); - kfree(adapter->priv[i]); - } - } - - kfree(adapter); - return 0; -} - -/* - * The main process. - * - * This function is the main procedure of the driver and handles various driver - * operations. It runs in a loop and provides the core functionalities. - * - * The main responsibilities of this function are - - * - Ensure concurrency control - * - Handle pending interrupts and call interrupt handlers - * - Wake up the card if required - * - Handle command responses and call response handlers - * - Handle events and call event handlers - * - Execute pending commands - * - Transmit pending data packets - */ -int mwifiex_main_process(struct mwifiex_adapter *adapter) -{ - int ret = 0; - unsigned long flags; - struct sk_buff *skb; - - spin_lock_irqsave(&adapter->main_proc_lock, flags); - - /* Check if already processing */ - if (adapter->mwifiex_processing) { - spin_unlock_irqrestore(&adapter->main_proc_lock, flags); - goto exit_main_proc; - } else { - adapter->mwifiex_processing = true; - spin_unlock_irqrestore(&adapter->main_proc_lock, flags); - } -process_start: - do { - if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) || - (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)) - break; - - /* Handle pending interrupt if any */ - if (adapter->int_status) { - if (adapter->hs_activated) - mwifiex_process_hs_config(adapter); - if (adapter->if_ops.process_int_status) - adapter->if_ops.process_int_status(adapter); - } - - /* Need to wake up the card ? */ - if ((adapter->ps_state == PS_STATE_SLEEP) && - (adapter->pm_wakeup_card_req && - !adapter->pm_wakeup_fw_try) && - (is_command_pending(adapter) || - !mwifiex_wmm_lists_empty(adapter))) { - adapter->pm_wakeup_fw_try = true; - adapter->if_ops.wakeup(adapter); - continue; - } - - if (IS_CARD_RX_RCVD(adapter)) { - adapter->pm_wakeup_fw_try = false; - if (adapter->ps_state == PS_STATE_SLEEP) - adapter->ps_state = PS_STATE_AWAKE; - } else { - /* We have tried to wakeup the card already */ - if (adapter->pm_wakeup_fw_try) - break; - if (adapter->ps_state != PS_STATE_AWAKE || - adapter->tx_lock_flag) - break; - - if ((adapter->scan_processing && - !adapter->scan_delay_cnt) || adapter->data_sent || - mwifiex_wmm_lists_empty(adapter)) { - if (adapter->cmd_sent || adapter->curr_cmd || - (!is_command_pending(adapter))) - break; - } - } - - /* Check Rx data for USB */ - if (adapter->iface_type == MWIFIEX_USB) - while ((skb = skb_dequeue(&adapter->usb_rx_data_q))) - mwifiex_handle_rx_packet(adapter, skb); - - /* Check for Cmd Resp */ - if (adapter->cmd_resp_received) { - adapter->cmd_resp_received = false; - mwifiex_process_cmdresp(adapter); - - /* call mwifiex back when init_fw is done */ - if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) { - adapter->hw_status = MWIFIEX_HW_STATUS_READY; - mwifiex_init_fw_complete(adapter); - } - } - - /* Check for event */ - if (adapter->event_received) { - adapter->event_received = false; - mwifiex_process_event(adapter); - } - - /* Check if we need to confirm Sleep Request - received previously */ - if (adapter->ps_state == PS_STATE_PRE_SLEEP) { - if (!adapter->cmd_sent && !adapter->curr_cmd) - mwifiex_check_ps_cond(adapter); - } - - /* * The ps_state may have been changed during processing of - * Sleep Request event. - */ - if ((adapter->ps_state == PS_STATE_SLEEP) || - (adapter->ps_state == PS_STATE_PRE_SLEEP) || - (adapter->ps_state == PS_STATE_SLEEP_CFM) || - adapter->tx_lock_flag) - continue; - - if (!adapter->cmd_sent && !adapter->curr_cmd) { - if (mwifiex_exec_next_cmd(adapter) == -1) { - ret = -1; - break; - } - } - - if ((!adapter->scan_processing || adapter->scan_delay_cnt) && - !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter)) { - mwifiex_wmm_process_tx(adapter); - if (adapter->hs_activated) { - adapter->is_hs_configured = false; - mwifiex_hs_activated_event - (mwifiex_get_priv - (adapter, MWIFIEX_BSS_ROLE_ANY), - false); - } - } - - if (adapter->delay_null_pkt && !adapter->cmd_sent && - !adapter->curr_cmd && !is_command_pending(adapter) && - mwifiex_wmm_lists_empty(adapter)) { - if (!mwifiex_send_null_packet - (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), - MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | - MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) { - adapter->delay_null_pkt = false; - adapter->ps_state = PS_STATE_SLEEP; - } - break; - } - } while (true); - - if ((adapter->int_status) || IS_CARD_RX_RCVD(adapter)) - goto process_start; - - spin_lock_irqsave(&adapter->main_proc_lock, flags); - adapter->mwifiex_processing = false; - spin_unlock_irqrestore(&adapter->main_proc_lock, flags); - -exit_main_proc: - if (adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) - mwifiex_shutdown_drv(adapter); - return ret; -} -EXPORT_SYMBOL_GPL(mwifiex_main_process); - -/* - * This function frees the adapter structure. - * - * Additionally, this closes the netlink socket, frees the timers - * and private structures. - */ -static void mwifiex_free_adapter(struct mwifiex_adapter *adapter) -{ - if (!adapter) { - pr_err("%s: adapter is NULL\n", __func__); - return; - } - - mwifiex_unregister(adapter); - pr_debug("info: %s: free adapter\n", __func__); -} - -/* - * This function gets firmware and initializes it. - * - * The main initialization steps followed are - - * - Download the correct firmware to card - * - Issue the init commands to firmware - */ -static void mwifiex_fw_dpc(const struct firmware *firmware, void *context) -{ - int ret; - char fmt[64]; - struct mwifiex_private *priv; - struct mwifiex_adapter *adapter = context; - struct mwifiex_fw_image fw; - - if (!firmware) { - dev_err(adapter->dev, - "Failed to get firmware %s\n", adapter->fw_name); - goto done; - } - - memset(&fw, 0, sizeof(struct mwifiex_fw_image)); - adapter->firmware = firmware; - fw.fw_buf = (u8 *) adapter->firmware->data; - fw.fw_len = adapter->firmware->size; - - if (adapter->if_ops.dnld_fw) - ret = adapter->if_ops.dnld_fw(adapter, &fw); - else - ret = mwifiex_dnld_fw(adapter, &fw); - if (ret == -1) - goto done; - - dev_notice(adapter->dev, "WLAN FW is active\n"); - - if (cal_data_cfg) { - if ((request_firmware(&adapter->cal_data, cal_data_cfg, - adapter->dev)) < 0) - dev_err(adapter->dev, - "Cal data request_firmware() failed\n"); - } - - adapter->init_wait_q_woken = false; - ret = mwifiex_init_fw(adapter); - if (ret == -1) { - goto done; - } else if (!ret) { - adapter->hw_status = MWIFIEX_HW_STATUS_READY; - goto done; - } - /* Wait for mwifiex_init to complete */ - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); - if (adapter->hw_status != MWIFIEX_HW_STATUS_READY) - goto done; - - priv = adapter->priv[MWIFIEX_BSS_ROLE_STA]; - if (mwifiex_register_cfg80211(adapter)) { - dev_err(adapter->dev, "cannot register with cfg80211\n"); - goto err_init_fw; - } - - rtnl_lock(); - /* Create station interface by default */ - if (!mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", - NL80211_IFTYPE_STATION, NULL, NULL)) { - dev_err(adapter->dev, "cannot create default STA interface\n"); - goto err_add_intf; - } - - /* Create AP interface by default */ - if (!mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", - NL80211_IFTYPE_AP, NULL, NULL)) { - dev_err(adapter->dev, "cannot create default AP interface\n"); - goto err_add_intf; - } - - /* Create P2P interface by default */ - if (!mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", - NL80211_IFTYPE_P2P_CLIENT, NULL, NULL)) { - dev_err(adapter->dev, "cannot create default P2P interface\n"); - goto err_add_intf; - } - rtnl_unlock(); - - mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); - dev_notice(adapter->dev, "driver_version = %s\n", fmt); - goto done; - -err_add_intf: - mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev); - rtnl_unlock(); -err_init_fw: - pr_debug("info: %s: unregister device\n", __func__); - adapter->if_ops.unregister_dev(adapter); -done: - if (adapter->cal_data) { - release_firmware(adapter->cal_data); - adapter->cal_data = NULL; - } - release_firmware(adapter->firmware); - complete(&adapter->fw_load); - return; -} - -/* - * This function initializes the hardware and gets firmware. - */ -static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter) -{ - int ret; - - init_completion(&adapter->fw_load); - ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name, - adapter->dev, GFP_KERNEL, adapter, - mwifiex_fw_dpc); - if (ret < 0) - dev_err(adapter->dev, - "request_firmware_nowait() returned error %d\n", ret); - return ret; -} - -/* - * CFG802.11 network device handler for open. - * - * Starts the data queue. - */ -static int -mwifiex_open(struct net_device *dev) -{ - netif_tx_start_all_queues(dev); - return 0; -} - -/* - * CFG802.11 network device handler for close. - */ -static int -mwifiex_close(struct net_device *dev) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - - if (priv->scan_request) { - dev_dbg(priv->adapter->dev, "aborting scan on ndo_stop\n"); - cfg80211_scan_done(priv->scan_request, 1); - priv->scan_request = NULL; - priv->scan_aborting = true; - } - - return 0; -} - -/* - * Add buffer into wmm tx queue and queue work to transmit it. - */ -int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb) -{ - struct netdev_queue *txq; - int index = mwifiex_1d_to_wmm_queue[skb->priority]; - - if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) { - txq = netdev_get_tx_queue(priv->netdev, index); - if (!netif_tx_queue_stopped(txq)) { - netif_tx_stop_queue(txq); - dev_dbg(priv->adapter->dev, "stop queue: %d\n", index); - } - } - - atomic_inc(&priv->adapter->tx_pending); - mwifiex_wmm_add_buf_txqueue(priv, skb); - - if (priv->adapter->scan_delay_cnt) - atomic_set(&priv->adapter->is_tx_received, true); - - queue_work(priv->adapter->workqueue, &priv->adapter->main_work); - - return 0; -} - -/* - * CFG802.11 network device handler for data transmission. - */ -static int -mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - struct sk_buff *new_skb; - struct mwifiex_txinfo *tx_info; - struct timeval tv; - - dev_dbg(priv->adapter->dev, "data: %lu BSS(%d-%d): Data <= kernel\n", - jiffies, priv->bss_type, priv->bss_num); - - if (priv->adapter->surprise_removed) { - kfree_skb(skb); - priv->stats.tx_dropped++; - return 0; - } - if (!skb->len || (skb->len > ETH_FRAME_LEN)) { - dev_err(priv->adapter->dev, "Tx: bad skb len %d\n", skb->len); - kfree_skb(skb); - priv->stats.tx_dropped++; - return 0; - } - if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) { - dev_dbg(priv->adapter->dev, - "data: Tx: insufficient skb headroom %d\n", - skb_headroom(skb)); - /* Insufficient skb headroom - allocate a new skb */ - new_skb = - skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN); - if (unlikely(!new_skb)) { - dev_err(priv->adapter->dev, "Tx: cannot alloca new_skb\n"); - kfree_skb(skb); - priv->stats.tx_dropped++; - return 0; - } - kfree_skb(skb); - skb = new_skb; - dev_dbg(priv->adapter->dev, "info: new skb headroomd %d\n", - skb_headroom(skb)); - } - - tx_info = MWIFIEX_SKB_TXCB(skb); - tx_info->bss_num = priv->bss_num; - tx_info->bss_type = priv->bss_type; - - /* Record the current time the packet was queued; used to - * determine the amount of time the packet was queued in - * the driver before it was sent to the firmware. - * The delay is then sent along with the packet to the - * firmware for aggregate delay calculation for stats and - * MSDU lifetime expiry. - */ - do_gettimeofday(&tv); - skb->tstamp = timeval_to_ktime(tv); - - mwifiex_queue_tx_pkt(priv, skb); - - return 0; -} - -/* - * CFG802.11 network device handler for setting MAC address. - */ -static int -mwifiex_set_mac_address(struct net_device *dev, void *addr) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - struct sockaddr *hw_addr = addr; - int ret; - - memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN); - - /* Send request to firmware */ - ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_MAC_ADDRESS, - HostCmd_ACT_GEN_SET, 0, NULL); - - if (!ret) - memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN); - else - dev_err(priv->adapter->dev, - "set mac address failed: ret=%d\n", ret); - - memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); - - return ret; -} - -/* - * CFG802.11 network device handler for setting multicast list. - */ -static void mwifiex_set_multicast_list(struct net_device *dev) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - struct mwifiex_multicast_list mcast_list; - - if (dev->flags & IFF_PROMISC) { - mcast_list.mode = MWIFIEX_PROMISC_MODE; - } else if (dev->flags & IFF_ALLMULTI || - netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) { - mcast_list.mode = MWIFIEX_ALL_MULTI_MODE; - } else { - mcast_list.mode = MWIFIEX_MULTICAST_MODE; - mcast_list.num_multicast_addr = - mwifiex_copy_mcast_addr(&mcast_list, dev); - } - mwifiex_request_set_multicast_list(priv, &mcast_list); -} - -/* - * CFG802.11 network device handler for transmission timeout. - */ -static void -mwifiex_tx_timeout(struct net_device *dev) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - - priv->num_tx_timeout++; - priv->tx_timeout_cnt++; - dev_err(priv->adapter->dev, - "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n", - jiffies, priv->tx_timeout_cnt, priv->bss_type, priv->bss_num); - mwifiex_set_trans_start(dev); - - if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD && - priv->adapter->if_ops.card_reset) { - dev_err(priv->adapter->dev, - "tx_timeout_cnt exceeds threshold. Triggering card reset!\n"); - priv->adapter->if_ops.card_reset(priv->adapter); - } -} - -/* - * CFG802.11 network device handler for statistics retrieval. - */ -static struct net_device_stats *mwifiex_get_stats(struct net_device *dev) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - - return &priv->stats; -} - -static u16 -mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb) -{ - skb->priority = cfg80211_classify8021d(skb); - return mwifiex_1d_to_wmm_queue[skb->priority]; -} - -/* Network device handlers */ -static const struct net_device_ops mwifiex_netdev_ops = { - .ndo_open = mwifiex_open, - .ndo_stop = mwifiex_close, - .ndo_start_xmit = mwifiex_hard_start_xmit, - .ndo_set_mac_address = mwifiex_set_mac_address, - .ndo_tx_timeout = mwifiex_tx_timeout, - .ndo_get_stats = mwifiex_get_stats, - .ndo_set_rx_mode = mwifiex_set_multicast_list, - .ndo_select_queue = mwifiex_netdev_select_wmm_queue, -}; - -/* - * This function initializes the private structure parameters. - * - * The following wait queues are initialized - - * - IOCTL wait queue - * - Command wait queue - * - Statistics wait queue - * - * ...and the following default parameters are set - - * - Current key index : Set to 0 - * - Rate index : Set to auto - * - Media connected : Set to disconnected - * - Adhoc link sensed : Set to false - * - Nick name : Set to null - * - Number of Tx timeout : Set to 0 - * - Device address : Set to current address - * - * In addition, the CFG80211 work queue is also created. - */ -void mwifiex_init_priv_params(struct mwifiex_private *priv, - struct net_device *dev) -{ - dev->netdev_ops = &mwifiex_netdev_ops; - dev->destructor = free_netdev; - /* Initialize private structure */ - priv->current_key_index = 0; - priv->media_connected = false; - memset(&priv->nick_name, 0, sizeof(priv->nick_name)); - memset(priv->mgmt_ie, 0, - sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX); - priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK; - priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK; - priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK; - priv->rsn_idx = MWIFIEX_AUTO_IDX_MASK; - priv->num_tx_timeout = 0; - memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); -} - -/* - * This function check if command is pending. - */ -int is_command_pending(struct mwifiex_adapter *adapter) -{ - unsigned long flags; - int is_cmd_pend_q_empty; - - 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); - - return !is_cmd_pend_q_empty; -} - -/* - * This is the main work queue function. - * - * It handles the main process, which in turn handles the complete - * driver operations. - */ -static void mwifiex_main_work_queue(struct work_struct *work) -{ - struct mwifiex_adapter *adapter = - container_of(work, struct mwifiex_adapter, main_work); - - if (adapter->surprise_removed) - return; - mwifiex_main_process(adapter); -} - -/* - * This function cancels all works in the queue and destroys - * the main workqueue. - */ -static void -mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter) -{ - flush_workqueue(adapter->workqueue); - destroy_workqueue(adapter->workqueue); - adapter->workqueue = NULL; -} - -/* - * This function adds the card. - * - * This function follows the following major steps to set up the device - - * - Initialize software. This includes probing the card, registering - * the interface operations table, and allocating/initializing the - * adapter structure - * - Set up the netlink socket - * - Create and start the main work queue - * - Register the device - * - Initialize firmware and hardware - * - Add logical interfaces - */ -int -mwifiex_add_card(void *card, struct semaphore *sem, - struct mwifiex_if_ops *if_ops, u8 iface_type) -{ - struct mwifiex_adapter *adapter; - - if (down_interruptible(sem)) - goto exit_sem_err; - - if (mwifiex_register(card, if_ops, (void **)&adapter)) { - pr_err("%s: software init failed\n", __func__); - goto err_init_sw; - } - - adapter->iface_type = iface_type; - - adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; - adapter->surprise_removed = false; - init_waitqueue_head(&adapter->init_wait_q); - adapter->is_suspended = false; - adapter->hs_activated = false; - init_waitqueue_head(&adapter->hs_activate_wait_q); - adapter->cmd_wait_q_required = false; - init_waitqueue_head(&adapter->cmd_wait_q.wait); - adapter->cmd_wait_q.status = 0; - adapter->scan_wait_q_woken = false; - - adapter->workqueue = create_workqueue("MWIFIEX_WORK_QUEUE"); - if (!adapter->workqueue) - goto err_kmalloc; - - INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); - - /* Register the device. Fill up the private data structure with relevant - information from the card and request for the required IRQ. */ - if (adapter->if_ops.register_dev(adapter)) { - pr_err("%s: failed to register mwifiex device\n", __func__); - goto err_registerdev; - } - - if (mwifiex_init_hw_fw(adapter)) { - pr_err("%s: firmware init failed\n", __func__); - goto err_init_fw; - } - - up(sem); - return 0; - -err_init_fw: - pr_debug("info: %s: unregister device\n", __func__); - if (adapter->if_ops.unregister_dev) - adapter->if_ops.unregister_dev(adapter); -err_registerdev: - adapter->surprise_removed = true; - mwifiex_terminate_workqueue(adapter); -err_kmalloc: - if ((adapter->hw_status == MWIFIEX_HW_STATUS_FW_READY) || - (adapter->hw_status == MWIFIEX_HW_STATUS_READY)) { - pr_debug("info: %s: shutdown mwifiex\n", __func__); - adapter->init_wait_q_woken = false; - - if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); - } - - mwifiex_free_adapter(adapter); - -err_init_sw: - up(sem); - -exit_sem_err: - return -1; -} -EXPORT_SYMBOL_GPL(mwifiex_add_card); - -/* - * This function removes the card. - * - * This function follows the following major steps to remove the device - - * - Stop data traffic - * - Shutdown firmware - * - Remove the logical interfaces - * - Terminate the work queue - * - Unregister the device - * - Free the adapter structure - */ -int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem) -{ - struct mwifiex_private *priv = NULL; - int i; - - if (down_interruptible(sem)) - goto exit_sem_err; - - if (!adapter) - goto exit_remove; - - adapter->surprise_removed = true; - - /* Stop data */ - for (i = 0; i < adapter->priv_num; i++) { - priv = adapter->priv[i]; - if (priv && priv->netdev) { - mwifiex_stop_net_dev_queue(priv->netdev, adapter); - if (netif_carrier_ok(priv->netdev)) - netif_carrier_off(priv->netdev); - } - } - - dev_dbg(adapter->dev, "cmd: calling mwifiex_shutdown_drv...\n"); - adapter->init_wait_q_woken = false; - - if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); - dev_dbg(adapter->dev, "cmd: mwifiex_shutdown_drv done\n"); - if (atomic_read(&adapter->rx_pending) || - atomic_read(&adapter->tx_pending) || - atomic_read(&adapter->cmd_pending)) { - dev_err(adapter->dev, "rx_pending=%d, tx_pending=%d, " - "cmd_pending=%d\n", - atomic_read(&adapter->rx_pending), - atomic_read(&adapter->tx_pending), - atomic_read(&adapter->cmd_pending)); - } - - for (i = 0; i < adapter->priv_num; i++) { - priv = adapter->priv[i]; - - if (!priv) - continue; - - rtnl_lock(); - if (priv->wdev && priv->netdev) - mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev); - rtnl_unlock(); - } - - priv = adapter->priv[0]; - if (!priv || !priv->wdev) - goto exit_remove; - - wiphy_unregister(priv->wdev->wiphy); - wiphy_free(priv->wdev->wiphy); - - for (i = 0; i < adapter->priv_num; i++) { - priv = adapter->priv[i]; - if (priv) - kfree(priv->wdev); - } - - mwifiex_terminate_workqueue(adapter); - - /* Unregister device */ - dev_dbg(adapter->dev, "info: unregister device\n"); - if (adapter->if_ops.unregister_dev) - adapter->if_ops.unregister_dev(adapter); - /* Free adapter structure */ - dev_dbg(adapter->dev, "info: free adapter\n"); - mwifiex_free_adapter(adapter); - -exit_remove: - up(sem); -exit_sem_err: - return 0; -} -EXPORT_SYMBOL_GPL(mwifiex_remove_card); - -/* - * This function initializes the module. - * - * The debug FS is also initialized if configured. - */ -static int -mwifiex_init_module(void) -{ -#ifdef CONFIG_DEBUG_FS - mwifiex_debugfs_init(); -#endif - return 0; -} - -/* - * This function cleans up the module. - * - * The debug FS is removed if available. - */ -static void -mwifiex_cleanup_module(void) -{ -#ifdef CONFIG_DEBUG_FS - mwifiex_debugfs_remove(); -#endif -} - -module_init(mwifiex_init_module); -module_exit(mwifiex_cleanup_module); - -MODULE_AUTHOR("Marvell International Ltd."); -MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION); -MODULE_VERSION(VERSION); -MODULE_LICENSE("GPL v2"); |