| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Amitkumar Karwar | 2020 | 25.86% | 37 | 27.61% |
| Bing Zhao | 1783 | 22.82% | 3 | 2.24% |
| Xinming Hu | 1337 | 17.11% | 17 | 12.69% |
| Avinash Patil | 925 | 11.84% | 18 | 13.43% |
| Zhaoyang Liu | 464 | 5.94% | 6 | 4.48% |
| Brian Norris | 292 | 3.74% | 13 | 9.70% |
| Rajat Jain | 210 | 2.69% | 3 | 2.24% |
| Shengzhen Li | 169 | 2.16% | 3 | 2.24% |
| Ganapathi Bhat | 106 | 1.36% | 2 | 1.49% |
| Joe Perches | 82 | 1.05% | 1 | 0.75% |
| Yogesh Ashok Powar | 73 | 0.93% | 4 | 2.99% |
| Stone Piao | 56 | 0.72% | 1 | 0.75% |
| Ashok Nagarajan | 50 | 0.64% | 1 | 0.75% |
| Chunfan Chen | 50 | 0.64% | 1 | 0.75% |
| Jeffy Chen | 42 | 0.54% | 2 | 1.49% |
| Daniel Drake | 35 | 0.45% | 1 | 0.75% |
| Cathy Luo | 23 | 0.29% | 1 | 0.75% |
| Ulf Hansson | 18 | 0.23% | 1 | 0.75% |
| Sharvari Harisangam | 15 | 0.19% | 1 | 0.75% |
| Avraham Stern | 13 | 0.17% | 1 | 0.75% |
| Ujjal Roy | 8 | 0.10% | 1 | 0.75% |
| Tom Gundersen | 6 | 0.08% | 1 | 0.75% |
| Wei-Ning Huang | 6 | 0.08% | 1 | 0.75% |
| Christoph Fritz | 4 | 0.05% | 1 | 0.75% |
| Michael S. Tsirkin | 4 | 0.05% | 1 | 0.75% |
| Julia Lawall | 3 | 0.04% | 1 | 0.75% |
| Alexander Duyck | 3 | 0.04% | 1 | 0.75% |
| David S. Miller | 2 | 0.03% | 1 | 0.75% |
| Kees Cook | 2 | 0.03% | 1 | 0.75% |
| Kyeyoon Park | 2 | 0.03% | 1 | 0.75% |
| Arend Van Spriel | 2 | 0.03% | 1 | 0.75% |
| Jason (Hui) Wang | 2 | 0.03% | 1 | 0.75% |
| Johannes Berg | 1 | 0.01% | 1 | 0.75% |
| Jiri Pirko | 1 | 0.01% | 1 | 0.75% |
| Colin Ian King | 1 | 0.01% | 1 | 0.75% |
| Thomas Gleixner | 1 | 0.01% | 1 | 0.75% |
| Luc Van Oostenryck | 1 | 0.01% | 1 | 0.75% |
| Total | 7812 | 134 |
/* * NXP Wireless LAN device driver: major functions * * Copyright 2011-2020 NXP * * This software file (the "File") is distributed by NXP * 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 <linux/suspend.h> #include "main.h" #include "wmm.h" #include "cfg80211.h" #include "11n.h" #define VERSION "1.0" #define MFG_FIRMWARE "mwifiex_mfg.bin" static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK; module_param(debug_mask, uint, 0); MODULE_PARM_DESC(debug_mask, "bitmap for debug flags"); const char driver_version[] = "mwifiex " VERSION " (%s) "; static char *cal_data_cfg; module_param(cal_data_cfg, charp, 0); static unsigned short driver_mode; module_param(driver_mode, ushort, 0); MODULE_PARM_DESC(driver_mode, "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7"); bool mfg_mode; module_param(mfg_mode, bool, 0); MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0"); bool aggr_ctrl; module_param(aggr_ctrl, bool, 0000); MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0"); /* * 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 device *dev, 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->dev = dev; adapter->card = card; /* Save interface specific operations in adapter */ memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops)); adapter->debug_mask = debug_mask; /* 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++; } mwifiex_init_lock_list(adapter); timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0); return 0; error: mwifiex_dbg(adapter, ERROR, "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; if (adapter->if_ops.cleanup_if) adapter->if_ops.cleanup_if(adapter); del_timer_sync(&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]); } } if (adapter->nd_info) { for (i = 0 ; i < adapter->nd_info->n_matches ; i++) kfree(adapter->nd_info->matches[i]); kfree(adapter->nd_info); adapter->nd_info = NULL; } kfree(adapter->regd); kfree(adapter); return 0; } void mwifiex_queue_main_work(struct mwifiex_adapter *adapter) { unsigned long flags; spin_lock_irqsave(&adapter->main_proc_lock, flags); if (adapter->mwifiex_processing) { adapter->more_task_flag = true; spin_unlock_irqrestore(&adapter->main_proc_lock, flags); } else { spin_unlock_irqrestore(&adapter->main_proc_lock, flags); queue_work(adapter->workqueue, &adapter->main_work); } } EXPORT_SYMBOL_GPL(mwifiex_queue_main_work); static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter) { spin_lock_bh(&adapter->rx_proc_lock); if (adapter->rx_processing) { spin_unlock_bh(&adapter->rx_proc_lock); } else { spin_unlock_bh(&adapter->rx_proc_lock); queue_work(adapter->rx_workqueue, &adapter->rx_work); } } static int mwifiex_process_rx(struct mwifiex_adapter *adapter) { struct sk_buff *skb; struct mwifiex_rxinfo *rx_info; spin_lock_bh(&adapter->rx_proc_lock); if (adapter->rx_processing || adapter->rx_locked) { spin_unlock_bh(&adapter->rx_proc_lock); goto exit_rx_proc; } else { adapter->rx_processing = true; spin_unlock_bh(&adapter->rx_proc_lock); } /* Check for Rx data */ while ((skb = skb_dequeue(&adapter->rx_data_q))) { atomic_dec(&adapter->rx_pending); if ((adapter->delay_main_work || adapter->iface_type == MWIFIEX_USB) && (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) { if (adapter->if_ops.submit_rem_rx_urbs) adapter->if_ops.submit_rem_rx_urbs(adapter); adapter->delay_main_work = false; mwifiex_queue_main_work(adapter); } rx_info = MWIFIEX_SKB_RXCB(skb); if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) { if (adapter->if_ops.deaggr_pkt) adapter->if_ops.deaggr_pkt(adapter, skb); dev_kfree_skb_any(skb); } else { mwifiex_handle_rx_packet(adapter, skb); } } spin_lock_bh(&adapter->rx_proc_lock); adapter->rx_processing = false; spin_unlock_bh(&adapter->rx_proc_lock); exit_rx_proc: 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; spin_lock_irqsave(&adapter->main_proc_lock, flags); /* Check if already processing */ if (adapter->mwifiex_processing || adapter->main_locked) { adapter->more_task_flag = true; spin_unlock_irqrestore(&adapter->main_proc_lock, flags); return 0; } else { adapter->mwifiex_processing = true; spin_unlock_irqrestore(&adapter->main_proc_lock, flags); } process_start: do { if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) break; /* For non-USB interfaces, If we process interrupts first, it * would increase RX pending even further. Avoid this by * checking if rx_pending has crossed high threshold and * schedule rx work queue and then process interrupts. * For USB interface, there are no interrupts. We already have * HIGH_RX_PENDING check in usb.c */ if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING && adapter->iface_type != MWIFIEX_USB) { adapter->delay_main_work = true; mwifiex_queue_rx_work(adapter); 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); } if (adapter->rx_work_enabled && adapter->data_received) mwifiex_queue_rx_work(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) || !skb_queue_empty(&adapter->tx_data_q) || !mwifiex_bypass_txlist_empty(adapter) || !mwifiex_wmm_lists_empty(adapter))) { adapter->pm_wakeup_fw_try = true; mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3)); adapter->if_ops.wakeup(adapter); continue; } if (IS_CARD_RX_RCVD(adapter)) { adapter->data_received = false; adapter->pm_wakeup_fw_try = false; del_timer(&adapter->wakeup_timer); 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_PRE_SLEEP) mwifiex_check_ps_cond(adapter); if (adapter->ps_state != PS_STATE_AWAKE) break; if (adapter->tx_lock_flag) { if (adapter->iface_type == MWIFIEX_USB) { if (!adapter->usb_mc_setup) break; } else break; } if ((!adapter->scan_chan_gap_enabled && adapter->scan_processing) || adapter->data_sent || mwifiex_is_tdls_chan_switching (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA)) || (mwifiex_wmm_lists_empty(adapter) && mwifiex_bypass_txlist_empty(adapter) && skb_queue_empty(&adapter->tx_data_q))) { if (adapter->cmd_sent || adapter->curr_cmd || !mwifiex_is_send_cmd_allowed (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA)) || (!is_command_pending(adapter))) break; } } /* Check for event */ if (adapter->event_received) { adapter->event_received = false; mwifiex_process_event(adapter); } /* 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 if we need to confirm Sleep Request received previously */ if (adapter->ps_state == PS_STATE_PRE_SLEEP) 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)) { continue; } if (adapter->tx_lock_flag) { if (adapter->iface_type == MWIFIEX_USB) { if (!adapter->usb_mc_setup) continue; } else continue; } if (!adapter->cmd_sent && !adapter->curr_cmd && mwifiex_is_send_cmd_allowed (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) { if (mwifiex_exec_next_cmd(adapter) == -1) { ret = -1; break; } } /** If USB Multi channel setup ongoing, * wait for ready to tx data. */ if (adapter->iface_type == MWIFIEX_USB && adapter->usb_mc_setup) continue; if ((adapter->scan_chan_gap_enabled || !adapter->scan_processing) && !adapter->data_sent && !skb_queue_empty(&adapter->tx_data_q)) { mwifiex_process_tx_queue(adapter); if (adapter->hs_activated) { clear_bit(MWIFIEX_IS_HS_CONFIGURED, &adapter->work_flags); mwifiex_hs_activated_event (mwifiex_get_priv (adapter, MWIFIEX_BSS_ROLE_ANY), false); } } if ((adapter->scan_chan_gap_enabled || !adapter->scan_processing) && !adapter->data_sent && !mwifiex_bypass_txlist_empty(adapter) && !mwifiex_is_tdls_chan_switching (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) { mwifiex_process_bypass_tx(adapter); if (adapter->hs_activated) { clear_bit(MWIFIEX_IS_HS_CONFIGURED, &adapter->work_flags); mwifiex_hs_activated_event (mwifiex_get_priv (adapter, MWIFIEX_BSS_ROLE_ANY), false); } } if ((adapter->scan_chan_gap_enabled || !adapter->scan_processing) && !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) && !mwifiex_is_tdls_chan_switching (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) { mwifiex_wmm_process_tx(adapter); if (adapter->hs_activated) { clear_bit(MWIFIEX_IS_HS_CONFIGURED, &adapter->work_flags); 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) && mwifiex_bypass_txlist_empty(adapter) && skb_queue_empty(&adapter->tx_data_q))) { 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); spin_lock_irqsave(&adapter->main_proc_lock, flags); if (adapter->more_task_flag) { adapter->more_task_flag = false; spin_unlock_irqrestore(&adapter->main_proc_lock, flags); goto process_start; } adapter->mwifiex_processing = false; spin_unlock_irqrestore(&adapter->main_proc_lock, flags); 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 cancels all works in the queue and destroys * the main workqueue. */ static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter) { if (adapter->workqueue) { flush_workqueue(adapter->workqueue); destroy_workqueue(adapter->workqueue); adapter->workqueue = NULL; } if (adapter->rx_workqueue) { flush_workqueue(adapter->rx_workqueue); destroy_workqueue(adapter->rx_workqueue); adapter->rx_workqueue = NULL; } } /* * 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 int _mwifiex_fw_dpc(const struct firmware *firmware, void *context) { int ret; char fmt[64]; struct mwifiex_adapter *adapter = context; struct mwifiex_fw_image fw; bool init_failed = false; struct wireless_dev *wdev; struct completion *fw_done = adapter->fw_done; if (!firmware) { mwifiex_dbg(adapter, ERROR, "Failed to get firmware %s\n", adapter->fw_name); goto err_dnld_fw; } 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 err_dnld_fw; mwifiex_dbg(adapter, MSG, "WLAN FW is active\n"); if (cal_data_cfg) { if ((request_firmware(&adapter->cal_data, cal_data_cfg, adapter->dev)) < 0) mwifiex_dbg(adapter, ERROR, "Cal data request_firmware() failed\n"); } /* enable host interrupt after fw dnld is successful */ if (adapter->if_ops.enable_int) { if (adapter->if_ops.enable_int(adapter)) goto err_dnld_fw; } adapter->init_wait_q_woken = false; ret = mwifiex_init_fw(adapter); if (ret == -1) { goto err_init_fw; } else if (!ret) { adapter->hw_status = MWIFIEX_HW_STATUS_READY; goto done; } /* Wait for mwifiex_init to complete */ if (!adapter->mfg_mode) { wait_event_interruptible(adapter->init_wait_q, adapter->init_wait_q_woken); if (adapter->hw_status != MWIFIEX_HW_STATUS_READY) goto err_init_fw; } if (!adapter->wiphy) { if (mwifiex_register_cfg80211(adapter)) { mwifiex_dbg(adapter, ERROR, "cannot register with cfg80211\n"); goto err_init_fw; } } if (mwifiex_init_channel_scan_gap(adapter)) { mwifiex_dbg(adapter, ERROR, "could not init channel stats table\n"); goto err_init_chan_scan; } if (driver_mode) { driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK; driver_mode |= MWIFIEX_DRIVER_MODE_STA; } rtnl_lock(); /* Create station interface by default */ wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM, NL80211_IFTYPE_STATION, NULL); if (IS_ERR(wdev)) { mwifiex_dbg(adapter, ERROR, "cannot create default STA interface\n"); rtnl_unlock(); goto err_add_intf; } if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) { wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM, NL80211_IFTYPE_AP, NULL); if (IS_ERR(wdev)) { mwifiex_dbg(adapter, ERROR, "cannot create AP interface\n"); rtnl_unlock(); goto err_add_intf; } } if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) { wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM, NL80211_IFTYPE_P2P_CLIENT, NULL); if (IS_ERR(wdev)) { mwifiex_dbg(adapter, ERROR, "cannot create p2p client interface\n"); rtnl_unlock(); goto err_add_intf; } } rtnl_unlock(); mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt); adapter->is_up = true; goto done; err_add_intf: vfree(adapter->chan_stats); err_init_chan_scan: wiphy_unregister(adapter->wiphy); wiphy_free(adapter->wiphy); err_init_fw: if (adapter->if_ops.disable_int) adapter->if_ops.disable_int(adapter); err_dnld_fw: mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__); if (adapter->if_ops.unregister_dev) adapter->if_ops.unregister_dev(adapter); set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); mwifiex_terminate_workqueue(adapter); if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { pr_debug("info: %s: shutdown mwifiex\n", __func__); mwifiex_shutdown_drv(adapter); mwifiex_free_cmd_buffers(adapter); } init_failed = true; done: if (adapter->cal_data) { release_firmware(adapter->cal_data); adapter->cal_data = NULL; } if (adapter->firmware) { release_firmware(adapter->firmware); adapter->firmware = NULL; } if (init_failed) { if (adapter->irq_wakeup >= 0) device_init_wakeup(adapter->dev, false); mwifiex_free_adapter(adapter); } /* Tell all current and future waiters we're finished */ complete_all(fw_done); return init_failed ? -EIO : 0; } static void mwifiex_fw_dpc(const struct firmware *firmware, void *context) { _mwifiex_fw_dpc(firmware, context); } /* * This function gets the firmware and (if called asynchronously) kicks off the * HW init when done. */ static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter, bool req_fw_nowait) { int ret; /* Override default firmware with manufacturing one if * manufacturing mode is enabled */ if (mfg_mode) { if (strlcpy(adapter->fw_name, MFG_FIRMWARE, sizeof(adapter->fw_name)) >= sizeof(adapter->fw_name)) { pr_err("%s: fw_name too long!\n", __func__); return -1; } } if (req_fw_nowait) { ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name, adapter->dev, GFP_KERNEL, adapter, mwifiex_fw_dpc); } else { ret = request_firmware(&adapter->firmware, adapter->fw_name, adapter->dev); } if (ret < 0) mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n", req_fw_nowait ? "_nowait" : "", ret); return ret; } /* * CFG802.11 network device handler for open. * * Starts the data queue. */ static int mwifiex_open(struct net_device *dev) { netif_carrier_off(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) { struct cfg80211_scan_info info = { .aborted = true, }; mwifiex_dbg(priv->adapter, INFO, "aborting scan on ndo_stop\n"); cfg80211_scan_done(priv->scan_request, &info); priv->scan_request = NULL; priv->scan_aborting = true; } if (priv->sched_scanning) { mwifiex_dbg(priv->adapter, INFO, "aborting bgscan on ndo_stop\n"); mwifiex_stop_bg_scan(priv); cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0); } return 0; } static bool mwifiex_bypass_tx_queue(struct mwifiex_private *priv, struct sk_buff *skb) { struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; if (ntohs(eth_hdr->h_proto) == ETH_P_PAE || mwifiex_is_skb_mgmt_frame(skb) || (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA && ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) { mwifiex_dbg(priv->adapter, DATA, "bypass txqueue; eth type %#x, mgmt %d\n", ntohs(eth_hdr->h_proto), mwifiex_is_skb_mgmt_frame(skb)); return true; } return false; } /* * 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); mwifiex_dbg(priv->adapter, DATA, "stop queue: %d\n", index); } } if (mwifiex_bypass_tx_queue(priv, skb)) { atomic_inc(&priv->adapter->tx_pending); atomic_inc(&priv->adapter->bypass_tx_pending); mwifiex_wmm_add_buf_bypass_txqueue(priv, skb); } else { atomic_inc(&priv->adapter->tx_pending); mwifiex_wmm_add_buf_txqueue(priv, skb); } mwifiex_queue_main_work(priv->adapter); return 0; } struct sk_buff * mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv, struct sk_buff *skb, u8 flag, u64 *cookie) { struct sk_buff *orig_skb = skb; struct mwifiex_txinfo *tx_info, *orig_tx_info; skb = skb_clone(skb, GFP_ATOMIC); if (skb) { int id; spin_lock_bh(&priv->ack_status_lock); id = idr_alloc(&priv->ack_status_frames, orig_skb, 1, 0x10, GFP_ATOMIC); spin_unlock_bh(&priv->ack_status_lock); if (id >= 0) { tx_info = MWIFIEX_SKB_TXCB(skb); tx_info->ack_frame_id = id; tx_info->flags |= flag; orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb); orig_tx_info->ack_frame_id = id; orig_tx_info->flags |= flag; if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie) orig_tx_info->cookie = *cookie; } else if (skb_shared(skb)) { kfree_skb(orig_skb); } else { kfree_skb(skb); skb = orig_skb; } } else { /* couldn't clone -- lose tx status ... */ skb = orig_skb; } return skb; } /* * CFG802.11 network device handler for data transmission. */ static netdev_tx_t 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; bool multicast; mwifiex_dbg(priv->adapter, DATA, "data: %lu BSS(%d-%d): Data <= kernel\n", jiffies, priv->bss_type, priv->bss_num); if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) { kfree_skb(skb); priv->stats.tx_dropped++; return 0; } if (!skb->len || (skb->len > ETH_FRAME_LEN)) { mwifiex_dbg(priv->adapter, ERROR, "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) { mwifiex_dbg(priv->adapter, DATA, "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)) { mwifiex_dbg(priv->adapter, ERROR, "Tx: cannot alloca new_skb\n"); kfree_skb(skb); priv->stats.tx_dropped++; return 0; } kfree_skb(skb); skb = new_skb; mwifiex_dbg(priv->adapter, INFO, "info: new skb headroomd %d\n", skb_headroom(skb)); } tx_info = MWIFIEX_SKB_TXCB(skb); memset(tx_info, 0, sizeof(*tx_info)); tx_info->bss_num = priv->bss_num; tx_info->bss_type = priv->bss_type; tx_info->pkt_len = skb->len; multicast = is_multicast_ether_addr(skb->data); if (unlikely(!multicast && skb->sk && skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS && priv->adapter->fw_api_ver == MWIFIEX_FW_V15)) skb = mwifiex_clone_skb_for_tx_status(priv, skb, MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL); /* 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. */ __net_timestamp(skb); if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && priv->bss_type == MWIFIEX_BSS_TYPE_STA && !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) { if (priv->adapter->auto_tdls && priv->check_tdls_tx) mwifiex_tdls_check_tx(priv, skb); } mwifiex_queue_tx_pkt(priv, skb); return 0; } int mwifiex_set_mac_address(struct mwifiex_private *priv, struct net_device *dev, bool external, u8 *new_mac) { int ret; u64 mac_addr, old_mac_addr; old_mac_addr = ether_addr_to_u64(priv->curr_addr); if (external) { mac_addr = ether_addr_to_u64(new_mac); } else { /* Internal mac address change */ if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY) return -ENOTSUPP; mac_addr = old_mac_addr; if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) { mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT); mac_addr += priv->bss_num; } else if (priv->adapter->priv[0] != priv) { /* Set mac address based on bss_type/bss_num */ mac_addr ^= BIT_ULL(priv->bss_type + 8); mac_addr += priv->bss_num; } } u64_to_ether_addr(mac_addr, priv->curr_addr); /* Send request to firmware */ ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS, HostCmd_ACT_GEN_SET, 0, NULL, true); if (ret) { u64_to_ether_addr(old_mac_addr, priv->curr_addr); mwifiex_dbg(priv->adapter, ERROR, "set mac address failed: ret=%d\n", ret); return ret; } ether_addr_copy(dev->dev_addr, priv->curr_addr); return 0; } /* CFG802.11 network device handler for setting MAC address. */ static int mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr) { struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); struct sockaddr *hw_addr = addr; return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data); } /* * 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, unsigned int txqueue) { struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); priv->num_tx_timeout++; priv->tx_timeout_cnt++; mwifiex_dbg(priv->adapter, ERROR, "%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) { mwifiex_dbg(priv->adapter, ERROR, "tx_timeout_cnt exceeds threshold.\t" "Triggering card reset!\n"); priv->adapter->if_ops.card_reset(priv->adapter); } } void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter) { struct usb_card_rec *card = adapter->card; struct mwifiex_private *priv; u16 tx_buf_size; int i, ret; card->mc_resync_flag = true; for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { if (atomic_read(&card->port[i].tx_data_urb_pending)) { mwifiex_dbg(adapter, WARN, "pending data urb in sys\n"); return; } } card->mc_resync_flag = false; tx_buf_size = 0xffff; priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF, HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false); if (ret) mwifiex_dbg(adapter, ERROR, "send reconfig tx buf size cmd err\n"); } EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync); void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter) { /* Dump all the memory data into single file, a userspace script will * be used to split all the memory data to multiple files */ mwifiex_dbg(adapter, MSG, "== mwifiex dump information to /sys/class/devcoredump start\n"); dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len, GFP_KERNEL); mwifiex_dbg(adapter, MSG, "== mwifiex dump information to /sys/class/devcoredump end\n"); /* Device dump data will be freed in device coredump release function * after 5 min. Here reset adapter->devdump_data and ->devdump_len * to avoid it been accidentally reused. */ adapter->devdump_data = NULL; adapter->devdump_len = 0; } EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump); void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter) { char *p; char drv_version[64]; struct usb_card_rec *cardp; struct sdio_mmc_card *sdio_card; struct mwifiex_private *priv; int i, idx; struct netdev_queue *txq; struct mwifiex_debug_info *debug_info; mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n"); p = adapter->devdump_data; strcpy(p, "========Start dump driverinfo========\n"); p += strlen("========Start dump driverinfo========\n"); p += sprintf(p, "driver_name = " "\"mwifiex\"\n"); mwifiex_drv_get_driver_version(adapter, drv_version, sizeof(drv_version) - 1); p += sprintf(p, "driver_version = %s\n", drv_version); if (adapter->iface_type == MWIFIEX_USB) { cardp = (struct usb_card_rec *)adapter->card; p += sprintf(p, "tx_cmd_urb_pending = %d\n", atomic_read(&cardp->tx_cmd_urb_pending)); p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n", atomic_read(&cardp->port[0].tx_data_urb_pending)); p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n", atomic_read(&cardp->port[1].tx_data_urb_pending)); p += sprintf(p, "rx_cmd_urb_pending = %d\n", atomic_read(&cardp->rx_cmd_urb_pending)); p += sprintf(p, "rx_data_urb_pending = %d\n", atomic_read(&cardp->rx_data_urb_pending)); } p += sprintf(p, "tx_pending = %d\n", atomic_read(&adapter->tx_pending)); p += sprintf(p, "rx_pending = %d\n", atomic_read(&adapter->rx_pending)); if (adapter->iface_type == MWIFIEX_SDIO) { sdio_card = (struct sdio_mmc_card *)adapter->card; p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n", sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port); p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n", sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port); } for (i = 0; i < adapter->priv_num; i++) { if (!adapter->priv[i] || !adapter->priv[i]->netdev) continue; priv = adapter->priv[i]; p += sprintf(p, "\n[interface : \"%s\"]\n", priv->netdev->name); p += sprintf(p, "wmm_tx_pending[0] = %d\n", atomic_read(&priv->wmm_tx_pending[0])); p += sprintf(p, "wmm_tx_pending[1] = %d\n", atomic_read(&priv->wmm_tx_pending[1])); p += sprintf(p, "wmm_tx_pending[2] = %d\n", atomic_read(&priv->wmm_tx_pending[2])); p += sprintf(p, "wmm_tx_pending[3] = %d\n", atomic_read(&priv->wmm_tx_pending[3])); p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ? "Disconnected" : "Connected"); p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev) ? "on" : "off")); for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) { txq = netdev_get_tx_queue(priv->netdev, idx); p += sprintf(p, "tx queue %d:%s ", idx, netif_tx_queue_stopped(txq) ? "stopped" : "started"); } p += sprintf(p, "\n%s: num_tx_timeout = %d\n", priv->netdev->name, priv->num_tx_timeout); } if (adapter->iface_type == MWIFIEX_SDIO || adapter->iface_type == MWIFIEX_PCIE) { p += sprintf(p, "\n=== %s register dump===\n", adapter->iface_type == MWIFIEX_SDIO ? "SDIO" : "PCIE"); if (adapter->if_ops.reg_dump) p += adapter->if_ops.reg_dump(adapter, p); } p += sprintf(p, "\n=== more debug information\n"); debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL); if (debug_info) { for (i = 0; i < adapter->priv_num; i++) { if (!adapter->priv[i] || !adapter->priv[i]->netdev) continue; priv = adapter->priv[i]; mwifiex_get_debug_info(priv, debug_info); p += mwifiex_debug_info_to_buffer(priv, p, debug_info); break; } kfree(debug_info); } strcpy(p, "\n========End dump========\n"); p += strlen("\n========End dump========\n"); mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n"); adapter->devdump_len = p - (char *)adapter->devdump_data; } EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump); void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter) { u8 idx; char *fw_dump_ptr; u32 dump_len = 0; for (idx = 0; idx < adapter->num_mem_types; idx++) { struct memory_type_mapping *entry = &adapter->mem_type_mapping_tbl[idx]; if (entry->mem_ptr) { dump_len += (strlen("========Start dump ") + strlen(entry->mem_name) + strlen("========\n") + (entry->mem_size + 1) + strlen("\n========End dump========\n")); } } if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) { /* Realloc in case buffer overflow */ fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len); mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n"); if (!fw_dump_ptr) { vfree(adapter->devdump_data); mwifiex_dbg(adapter, ERROR, "vzalloc devdump data failure!\n"); return; } memmove(fw_dump_ptr, adapter->devdump_data, adapter->devdump_len); vfree(adapter->devdump_data); adapter->devdump_data = fw_dump_ptr; } fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len; for (idx = 0; idx < adapter->num_mem_types; idx++) { struct memory_type_mapping *entry = &adapter->mem_type_mapping_tbl[idx]; if (entry->mem_ptr) { strcpy(fw_dump_ptr, "========Start dump "); fw_dump_ptr += strlen("========Start dump "); strcpy(fw_dump_ptr, entry->mem_name); fw_dump_ptr += strlen(entry->mem_name); strcpy(fw_dump_ptr, "========\n"); fw_dump_ptr += strlen("========\n"); memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size); fw_dump_ptr += entry->mem_size; strcpy(fw_dump_ptr, "\n========End dump========\n"); fw_dump_ptr += strlen("\n========End dump========\n"); } } adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data; for (idx = 0; idx < adapter->num_mem_types; idx++) { struct memory_type_mapping *entry = &adapter->mem_type_mapping_tbl[idx]; vfree(entry->mem_ptr); entry->mem_ptr = NULL; entry->mem_size = 0; } } EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info); /* * 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, struct net_device *sb_dev) { skb->priority = cfg80211_classify8021d(skb, NULL); 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_ndo_set_mac_address, .ndo_validate_addr = eth_validate_addr, .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 * - Rx histogram statistc : Set to 0 * * 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->needs_free_netdev = true; /* Initialize private structure */ priv->current_key_index = 0; priv->media_connected = false; 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->gen_idx = MWIFIEX_AUTO_IDX_MASK; priv->num_tx_timeout = 0; if (is_valid_ether_addr(dev->dev_addr)) ether_addr_copy(priv->curr_addr, dev->dev_addr); else ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr); if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA || GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL); if (priv->hist_data) mwifiex_hist_data_reset(priv); } } /* * This function check if command is pending. */ int is_command_pending(struct mwifiex_adapter *adapter) { int is_cmd_pend_q_empty; spin_lock_bh(&adapter->cmd_pending_q_lock); is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); spin_unlock_bh(&adapter->cmd_pending_q_lock); return !is_cmd_pend_q_empty; } /* * This is the RX work queue function. * * It handles the RX operations. */ static void mwifiex_rx_work_queue(struct work_struct *work) { struct mwifiex_adapter *adapter = container_of(work, struct mwifiex_adapter, rx_work); if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags)) return; mwifiex_process_rx(adapter); } /* * 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 (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags)) return; mwifiex_main_process(adapter); } /* Common teardown code used for both device removal and reset */ static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter) { struct mwifiex_private *priv; int i; /* We can no longer handle interrupts once we start doing the teardown * below. */ if (adapter->if_ops.disable_int) adapter->if_ops.disable_int(adapter); set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); mwifiex_terminate_workqueue(adapter); adapter->int_status = 0; /* 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); netif_device_detach(priv->netdev); } } mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n"); mwifiex_shutdown_drv(adapter); mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n"); if (atomic_read(&adapter->rx_pending) || atomic_read(&adapter->tx_pending) || atomic_read(&adapter->cmd_pending)) { mwifiex_dbg(adapter, ERROR, "rx_pending=%d, tx_pending=%d,\t" "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->netdev && priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev); rtnl_unlock(); } wiphy_unregister(adapter->wiphy); wiphy_free(adapter->wiphy); adapter->wiphy = NULL; vfree(adapter->chan_stats); mwifiex_free_cmd_buffers(adapter); } /* * This function gets called during PCIe function level reset. */ int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter) { struct mwifiex_private *priv; if (!adapter) return 0; wait_for_completion(adapter->fw_done); /* Caller should ensure we aren't suspending while this happens */ reinit_completion(adapter->fw_done); priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); mwifiex_deauthenticate(priv, NULL); mwifiex_uninit_sw(adapter); adapter->is_up = false; if (adapter->if_ops.down_dev) adapter->if_ops.down_dev(adapter); return 0; } EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw); /* This function gets called during PCIe function level reset. Required * code is extracted from mwifiex_add_card() */ int mwifiex_reinit_sw(struct mwifiex_adapter *adapter) { int ret; mwifiex_init_lock_list(adapter); if (adapter->if_ops.up_dev) adapter->if_ops.up_dev(adapter); adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); init_waitqueue_head(&adapter->init_wait_q); clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags); adapter->hs_activated = false; clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags); init_waitqueue_head(&adapter->hs_activate_wait_q); init_waitqueue_head(&adapter->cmd_wait_q.wait); adapter->cmd_wait_q.status = 0; adapter->scan_wait_q_woken = false; if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) adapter->rx_work_enabled = true; adapter->workqueue = alloc_workqueue("MWIFIEX_WORK_QUEUE", WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); if (!adapter->workqueue) goto err_kmalloc; INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); if (adapter->rx_work_enabled) { adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE", WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); if (!adapter->rx_workqueue) goto err_kmalloc; INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue); } /* Register the device. Fill up the private data structure with * relevant information from the card. Some code extracted from * mwifiex_register_dev() */ mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__); if (mwifiex_init_hw_fw(adapter, false)) { mwifiex_dbg(adapter, ERROR, "%s: firmware init failed\n", __func__); goto err_init_fw; } /* _mwifiex_fw_dpc() does its own cleanup */ ret = _mwifiex_fw_dpc(adapter->firmware, adapter); if (ret) { pr_err("Failed to bring up adapter: %d\n", ret); return ret; } mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__); return 0; err_init_fw: mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__); if (adapter->if_ops.unregister_dev) adapter->if_ops.unregister_dev(adapter); err_kmalloc: set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); mwifiex_terminate_workqueue(adapter); if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { mwifiex_dbg(adapter, ERROR, "info: %s: shutdown mwifiex\n", __func__); mwifiex_shutdown_drv(adapter); mwifiex_free_cmd_buffers(adapter); } complete_all(adapter->fw_done); mwifiex_dbg(adapter, INFO, "%s, error\n", __func__); return -1; } EXPORT_SYMBOL_GPL(mwifiex_reinit_sw); static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv) { struct mwifiex_adapter *adapter = priv; dev_dbg(adapter->dev, "%s: wake by wifi", __func__); adapter->wake_by_wifi = true; disable_irq_nosync(irq); /* Notify PM core we are wakeup source */ pm_wakeup_event(adapter->dev, 0); pm_system_wakeup(); return IRQ_HANDLED; } static void mwifiex_probe_of(struct mwifiex_adapter *adapter) { int ret; struct device *dev = adapter->dev; if (!dev->of_node) goto err_exit; adapter->dt_node = dev->of_node; adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0); if (!adapter->irq_wakeup) { dev_dbg(dev, "fail to parse irq_wakeup from device tree\n"); goto err_exit; } ret = devm_request_irq(dev, adapter->irq_wakeup, mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW, "wifi_wake", adapter); if (ret) { dev_err(dev, "Failed to request irq_wakeup %d (%d)\n", adapter->irq_wakeup, ret); goto err_exit; } disable_irq(adapter->irq_wakeup); if (device_init_wakeup(dev, true)) { dev_err(dev, "fail to init wakeup for mwifiex\n"); goto err_exit; } return; err_exit: adapter->irq_wakeup = -1; } /* * 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 completion *fw_done, struct mwifiex_if_ops *if_ops, u8 iface_type, struct device *dev) { struct mwifiex_adapter *adapter; if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) { pr_err("%s: software init failed\n", __func__); goto err_init_sw; } mwifiex_probe_of(adapter); adapter->iface_type = iface_type; adapter->fw_done = fw_done; adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); init_waitqueue_head(&adapter->init_wait_q); clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags); adapter->hs_activated = false; init_waitqueue_head(&adapter->hs_activate_wait_q); init_waitqueue_head(&adapter->cmd_wait_q.wait); adapter->cmd_wait_q.status = 0; adapter->scan_wait_q_woken = false; if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) adapter->rx_work_enabled = true; adapter->workqueue = alloc_workqueue("MWIFIEX_WORK_QUEUE", WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); if (!adapter->workqueue) goto err_kmalloc; INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); if (adapter->rx_work_enabled) { adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE", WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); if (!adapter->rx_workqueue) goto err_kmalloc; INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue); } /* Register the device. Fill up the private data structure with relevant information from the card. */ 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, true)) { pr_err("%s: firmware init failed\n", __func__); goto err_init_fw; } 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: set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); mwifiex_terminate_workqueue(adapter); if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { pr_debug("info: %s: shutdown mwifiex\n", __func__); mwifiex_shutdown_drv(adapter); mwifiex_free_cmd_buffers(adapter); } err_kmalloc: if (adapter->irq_wakeup >= 0) device_init_wakeup(adapter->dev, false); mwifiex_free_adapter(adapter); err_init_sw: 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) { if (!adapter) return 0; if (adapter->is_up) mwifiex_uninit_sw(adapter); if (adapter->irq_wakeup >= 0) device_init_wakeup(adapter->dev, false); /* Unregister device */ mwifiex_dbg(adapter, INFO, "info: unregister device\n"); if (adapter->if_ops.unregister_dev) adapter->if_ops.unregister_dev(adapter); /* Free adapter structure */ mwifiex_dbg(adapter, INFO, "info: free adapter\n"); mwifiex_free_adapter(adapter); return 0; } EXPORT_SYMBOL_GPL(mwifiex_remove_card); void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask, const char *fmt, ...) { struct va_format vaf; va_list args; if (!(adapter->debug_mask & mask)) return; va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; if (adapter->dev) dev_info(adapter->dev, "%pV", &vaf); else pr_info("%pV", &vaf); va_end(args); } EXPORT_SYMBOL_GPL(_mwifiex_dbg); /* * 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");
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