// SPDX-License-Identifier: GPL-2.0-only /* * NXP Wireless LAN device driver: major functions * * Copyright 2011-2024 NXP */ #include #include "main.h" #include "cmdevt.h" #include "wmm.h" #include "cfg80211.h" #include "11n.h" #define VERSION "1.0" static unsigned int debug_mask = NXPWIFI_DEFAULT_DEBUG_MASK; char nxpwifi_driver_version[] = "nxpwifi " VERSION " (%s) "; const u16 nxpwifi_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 }; /* Optional RF calibration data file */ static const char *cal_data_name = "nxp/cal_data.conf"; /* Register device; init adapter/privs/if_ops/locks; cleanup on fail. */ static struct nxpwifi_adapter *nxpwifi_register(void *card, struct device *dev, struct nxpwifi_if_ops *if_ops) { struct nxpwifi_adapter *adapter; int ret = 0; int i; adapter = kzalloc_obj(*adapter, GFP_KERNEL); if (!adapter) return ERR_PTR(-ENOMEM); adapter->dev = dev; adapter->card = card; /* Save interface specific operations in adapter */ memmove(&adapter->if_ops, if_ops, sizeof(struct nxpwifi_if_ops)); adapter->debug_mask = debug_mask; /* card specific initialization has been deferred until now .. */ if (adapter->if_ops.init_if) { ret = adapter->if_ops.init_if(adapter); if (ret) goto error; } adapter->priv_num = 0; for (i = 0; i < NXPWIFI_MAX_BSS_NUM; i++) { /* Allocate memory for private structure */ adapter->priv[i] = kzalloc_obj(struct nxpwifi_private, GFP_KERNEL); if (!adapter->priv[i]) { ret = -ENOMEM; goto error; } adapter->priv[i]->adapter = adapter; adapter->priv_num++; } nxpwifi_init_lock_list(adapter); timer_setup(&adapter->cmd_timer, nxpwifi_cmd_timeout_func, 0); if (ret) return ERR_PTR(ret); else return adapter; error: nxpwifi_dbg(adapter, ERROR, "info: leave %s with error\n", __func__); for (i = 0; i < adapter->priv_num; i++) kfree(adapter->priv[i]); kfree(adapter); return ERR_PTR(ret); } /* Unregister device; free timers, beacons, privs, nd_info, adapter. */ static void nxpwifi_unregister(struct nxpwifi_adapter *adapter) { s32 i; if (adapter->if_ops.cleanup_if) adapter->if_ops.cleanup_if(adapter); timer_delete_sync(&adapter->cmd_timer); /* Free private structures */ for (i = 0; i < adapter->priv_num; i++) { nxpwifi_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); } static void nxpwifi_queue_rx_work(struct nxpwifi_adapter *adapter) { queue_work(adapter->rx_workqueue, &adapter->rx_work); } static void nxpwifi_process_rx(struct nxpwifi_adapter *adapter) { struct sk_buff *skb; struct nxpwifi_rxinfo *rx_info; if (atomic_read(&adapter->iface_changing) || atomic_read(&adapter->rx_ba_teardown_pending)) return; /* Check for Rx data */ while ((skb = skb_dequeue(&adapter->rx_data_q))) { atomic_dec(&adapter->rx_pending); if (adapter->delay_main_work && (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) { adapter->delay_main_work = false; nxpwifi_queue_work(adapter, &adapter->main_work); } rx_info = NXPWIFI_SKB_RXCB(skb); if (rx_info->buf_type == NXPWIFI_TYPE_AGGR_DATA) { if (adapter->if_ops.deaggr_pkt) adapter->if_ops.deaggr_pkt(adapter, skb); dev_kfree_skb_any(skb); } else { nxpwifi_handle_rx_packet(adapter, skb); } } } static void maybe_quirk_fw_disable_ds(struct nxpwifi_adapter *adapter) { struct nxpwifi_private *priv = nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_STA); struct nxpwifi_ver_ext ver_ext; if (test_and_set_bit(NXPWIFI_IS_REQUESTING_FW_VEREXT, &adapter->work_flags)) return; memset(&ver_ext, 0, sizeof(ver_ext)); ver_ext.version_str_sel = 1; if (nxpwifi_send_cmd(priv, HOST_CMD_VERSION_EXT, HOST_ACT_GEN_GET, 0, &ver_ext, false)) { nxpwifi_dbg(priv->adapter, MSG, "Checking hardware revision failed.\n"); } } static void nxpwifi_handle_irq_status(struct nxpwifi_adapter *adapter, u8 istat) { if (adapter->hs_activated) nxpwifi_process_hs_config(adapter); if (adapter->if_ops.process_int_status) adapter->if_ops.process_int_status(adapter, istat); } static bool nxpwifi_drain_tx(struct nxpwifi_adapter *adapter) { bool ret = false; if ((adapter->scan_chan_gap_enabled || !adapter->scan_processing) && !adapter->data_sent && !skb_queue_empty(&adapter->tx_data_q)) { if (adapter->hs_activated_manually) { nxpwifi_cancel_hs(nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_ANY), NXPWIFI_ASYNC_CMD); adapter->hs_activated_manually = false; } nxpwifi_process_tx_queue(adapter); if (adapter->hs_activated) { clear_bit(NXPWIFI_IS_HS_CONFIGURED, &adapter->work_flags); nxpwifi_hs_activated_event (nxpwifi_get_priv (adapter, NXPWIFI_BSS_ROLE_ANY), false); } ret = true; } if ((adapter->scan_chan_gap_enabled || !adapter->scan_processing) && !adapter->data_sent && !nxpwifi_bypass_txlist_empty(adapter)) { if (adapter->hs_activated_manually) { nxpwifi_cancel_hs(nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_ANY), NXPWIFI_ASYNC_CMD); adapter->hs_activated_manually = false; } nxpwifi_process_bypass_tx(adapter); if (adapter->hs_activated) { clear_bit(NXPWIFI_IS_HS_CONFIGURED, &adapter->work_flags); nxpwifi_hs_activated_event (nxpwifi_get_priv (adapter, NXPWIFI_BSS_ROLE_ANY), false); } ret = true; } if ((adapter->scan_chan_gap_enabled || !adapter->scan_processing) && !adapter->data_sent && !nxpwifi_wmm_lists_empty(adapter)) { if (adapter->hs_activated_manually) { nxpwifi_cancel_hs(nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_ANY), NXPWIFI_ASYNC_CMD); adapter->hs_activated_manually = false; } nxpwifi_wmm_process_tx(adapter); if (adapter->hs_activated) { clear_bit(NXPWIFI_IS_HS_CONFIGURED, &adapter->work_flags); nxpwifi_hs_activated_event (nxpwifi_get_priv (adapter, NXPWIFI_BSS_ROLE_ANY), false); } ret = true; } return ret; } static bool nxpwifi_handle_rx(struct nxpwifi_adapter *adapter) { if (adapter->rx_work_enabled && adapter->data_received) { nxpwifi_queue_rx_work(adapter); return true; } return false; } static bool nxpwifi_handle_cmd_response(struct nxpwifi_adapter *adapter) { /* Check for Cmd Resp */ if (adapter->cmd_resp_received) { adapter->cmd_resp_received = false; nxpwifi_process_cmdresp(adapter); return true; } return false; } static bool nxpwifi_handle_events(struct nxpwifi_adapter *adapter) { if (adapter->event_received) { adapter->event_received = false; nxpwifi_process_event(adapter); return true; } return false; } static bool nxpwifi_tx_has_pending(struct nxpwifi_adapter *adapter) { return !skb_queue_empty(&adapter->tx_data_q) || !nxpwifi_bypass_txlist_empty(adapter) || !nxpwifi_wmm_lists_empty(adapter); } static bool nxpwifi_cmd_has_pending(struct nxpwifi_adapter *adapter) { return !list_empty(&adapter->cmd_pending_q); } static bool nxpwifi_events_has_pending(struct nxpwifi_adapter *adapter) { return adapter->event_received; } static bool nxpwifi_should_wakeup_card(struct nxpwifi_adapter *adapter) { if (adapter->ps_state != PS_STATE_SLEEP) return false; if (!adapter->pm_wakeup_card_req || adapter->pm_wakeup_fw_try) return false; return nxpwifi_is_command_pending(adapter) || nxpwifi_tx_has_pending(adapter); } static bool nxpwifi_should_exit_main_loop(struct nxpwifi_adapter *adapter) { if (adapter->pm_wakeup_fw_try) return true; if (adapter->ps_state == PS_STATE_PRE_SLEEP) nxpwifi_check_ps_cond(adapter); if (adapter->ps_state != PS_STATE_AWAKE) return true; if (adapter->tx_lock_flag) return true; if ((!adapter->scan_chan_gap_enabled && adapter->scan_processing) || adapter->data_sent || !nxpwifi_tx_has_pending(adapter)) { if (adapter->cmd_sent || adapter->curr_cmd || !nxpwifi_is_command_pending(adapter)) return true; } return false; } static void nxpwifi_wakeup_card(struct nxpwifi_adapter *adapter) { adapter->pm_wakeup_fw_try = true; mod_timer(&adapter->wakeup_timer, jiffies + (HZ * 3)); adapter->if_ops.wakeup(adapter); } static void nxpwifi_handle_vdll_download(struct nxpwifi_adapter *adapter) { if (!adapter->cmd_sent && adapter->vdll_ctrl.pending_block) { struct vdll_dnld_ctrl *ctrl = &adapter->vdll_ctrl; nxpwifi_download_vdll_block(adapter, ctrl->pending_block, ctrl->pending_block_len); ctrl->pending_block = NULL; } } static void nxpwifi_finish_delayed_null_pkt(struct nxpwifi_adapter *adapter) { if (!adapter->delay_null_pkt) return; if (adapter->cmd_sent || adapter->curr_cmd || nxpwifi_is_command_pending(adapter)) return; if (nxpwifi_tx_has_pending(adapter)) return; if (!nxpwifi_send_null_packet(nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_STA), NXPWIFI_TxPD_POWER_MGMT_NULL_PACKET | NXPWIFI_TxPD_POWER_MGMT_LAST_PACKET)) { adapter->delay_null_pkt = false; adapter->ps_state = PS_STATE_SLEEP; } } static bool nxpwifi_pump_command(struct nxpwifi_adapter *adapter) { if (!adapter->cmd_sent && !adapter->curr_cmd) { if (!nxpwifi_exec_next_cmd(adapter)) return true; } return false; } /* Main loop: IRQ/RX/CMD/EVENT; wake card; TX; PS null; exit if idle. */ void nxpwifi_main_process(struct nxpwifi_adapter *adapter) { unsigned long flags; /* Check if virtual interface changing */ if (atomic_read(&adapter->iface_changing)) { nxpwifi_dbg(adapter, INFO, "main_process skipped due to iface_changing"); return; } for (;;) { bool did_work = false; u8 istat = 0; if (adapter->hw_status == NXPWIFI_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->delay_main_work = true; nxpwifi_queue_rx_work(adapter); break; } /* * Snapshot-and-clear the interrupt status. * * Take the same lock as the producer (nxpwifi_sdio_interrupt()) uses * when OR-ing new bits into adapter->int_status. We atomically grab * what has accumulated and clear it, so this consumer owns this batch. */ spin_lock_irqsave(&adapter->int_lock, flags); istat = adapter->int_status; adapter->int_status = 0; spin_unlock_irqrestore(&adapter->int_lock, flags); /* Handle pending interrupt if any */ if (istat) { nxpwifi_handle_irq_status(adapter, istat); did_work = true; } did_work |= nxpwifi_handle_rx(adapter); if (nxpwifi_should_wakeup_card(adapter)) { nxpwifi_wakeup_card(adapter); continue; } if (IS_CARD_RX_RCVD(adapter)) { /* Card has responded, clear wakeup state and update power state */ adapter->data_received = false; adapter->pm_wakeup_fw_try = false; timer_delete(&adapter->wakeup_timer); if (adapter->ps_state == PS_STATE_SLEEP) adapter->ps_state = PS_STATE_AWAKE; } else { if (nxpwifi_should_exit_main_loop(adapter)) break; } did_work |= nxpwifi_handle_events(adapter); did_work |= nxpwifi_handle_cmd_response(adapter); /* Check if we need to confirm Sleep Request received previously */ if (adapter->ps_state == PS_STATE_PRE_SLEEP) nxpwifi_check_ps_cond(adapter); /* * The ps_state may have been changed during processing of * Sleep Request event. */ if (adapter->ps_state != PS_STATE_AWAKE) continue; if (adapter->tx_lock_flag) continue; nxpwifi_handle_vdll_download(adapter); did_work |= nxpwifi_pump_command(adapter); did_work |= nxpwifi_drain_tx(adapter); /* * Attempt to send delayed null packet. * If successful, firmware will enter sleep and ps_state will be updated. * We check ps_state here to determine if main loop can safely exit. */ nxpwifi_finish_delayed_null_pkt(adapter); if (adapter->ps_state == PS_STATE_SLEEP) break; /* * Step 3) Cooperative preemption point. * cond_resched() yields ONLY if need_resched() is set. Placing it * BEFORE the final check improves fairness: it lets ksdioirqd (RT/FIFO) * or other producers run and set new int_status bits. Immediately * after we return here, we perform the final "net cast" (Step 4) to * decide if we should continue or return. */ cond_resched(); /* * Step 4) Exit decision with lost-kick closure. * * We consider exiting ONLY when this round did no real work. * Rationale: * - If did_work == true: we will loop anyway; at Step 1 we will * re-snapshot int_status, so there's no need to re-check now. * - If did_work == false: we appear idle and may return. But during * our execution window, a producer may have just set int_status and * queue_work(); since this work is still running, queue_work() * returns false (no second instance queued). If we return now, * we'd leave unprocessed status with no pending work => lost-kick. * * Therefore, perform a single final check: if *anything* is pending, * continue looping; otherwise, break and return. */ if (!did_work) { bool more = false; unsigned long flags; /* 4a) New IRQ bits raced in while we were running? */ spin_lock_irqsave(&adapter->int_lock, flags); more |= adapter->int_status != 0; spin_unlock_irqrestore(&adapter->int_lock, flags); /* 4b) Any other sources still pending? (driver-specific) */ more |= nxpwifi_tx_has_pending(adapter); more |= nxpwifi_cmd_has_pending(adapter); more |= nxpwifi_events_has_pending(adapter); if (!more) break; /* Truly quiescent now: safe to return. */ /* else: loop back to Step 1 to consume what just arrived. */ } /* If did_work == true, we loop unconditionally and re-snapshot. */ }; } /* Free adapter via nxpwifi_unregister(). */ static void nxpwifi_free_adapter(struct nxpwifi_adapter *adapter) { if (!adapter) { pr_err("%s: adapter is NULL\n", __func__); return; } nxpwifi_unregister(adapter); pr_debug("info: %s: free adapter\n", __func__); } /* Destroy main and RX workqueues. */ static void nxpwifi_terminate_workqueue(struct nxpwifi_adapter *adapter) { if (adapter->workqueue) { destroy_workqueue(adapter->workqueue); adapter->workqueue = NULL; } if (adapter->rx_workqueue) { destroy_workqueue(adapter->rx_workqueue); adapter->rx_workqueue = NULL; } } /* FW bring-up: download, enable IRQ, init FW; cfg80211+ifaces; cleanup. */ static int _nxpwifi_fw_dpc(const struct firmware *firmware, void *context) { int ret = 0; char fmt[64]; struct nxpwifi_adapter *adapter = context; struct nxpwifi_fw_image fw; bool init_failed = false; struct wireless_dev *wdev; struct completion *fw_done = adapter->fw_done; if (!firmware) { nxpwifi_dbg(adapter, ERROR, "Failed to get firmware %s\n", adapter->fw_name); ret = -EINVAL; goto err_dnld_fw; } memset(&fw, 0, sizeof(struct nxpwifi_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 = nxpwifi_dnld_fw(adapter, &fw); if (ret) goto err_dnld_fw; nxpwifi_dbg(adapter, MSG, "WLAN FW is active\n"); /* Load optional calibration data */ ret = request_firmware(&adapter->cal_data, cal_data_name, adapter->dev); if (ret) { nxpwifi_dbg(adapter, INFO, "no %s, using default cal\n", cal_data_name); adapter->cal_data = NULL; } /* enable host interrupt after fw dnld is successful */ if (adapter->if_ops.enable_int) { ret = adapter->if_ops.enable_int(adapter); if (ret) goto err_dnld_fw; } ret = nxpwifi_init_fw(adapter); if (ret) goto err_init_fw; maybe_quirk_fw_disable_ds(adapter); if (!adapter->wiphy) { if (nxpwifi_register_cfg80211(adapter)) { nxpwifi_dbg(adapter, ERROR, "cannot register with cfg80211\n"); goto err_init_fw; } } if (nxpwifi_init_channel_scan_gap(adapter)) { nxpwifi_dbg(adapter, ERROR, "could not init channel stats table\n"); goto err_init_chan_scan; } rtnl_lock(); /* Create station interface by default */ wdev = nxpwifi_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM, NL80211_IFTYPE_STATION, NULL); if (IS_ERR(wdev)) { nxpwifi_dbg(adapter, ERROR, "cannot create default STA interface\n"); rtnl_unlock(); goto err_add_intf; } wdev = nxpwifi_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM, NL80211_IFTYPE_AP, NULL); if (IS_ERR(wdev)) { nxpwifi_dbg(adapter, ERROR, "cannot create AP interface\n"); rtnl_unlock(); goto err_add_intf; } rtnl_unlock(); nxpwifi_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); nxpwifi_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: nxpwifi_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__); if (adapter->if_ops.unregister_dev) adapter->if_ops.unregister_dev(adapter); set_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags); nxpwifi_terminate_workqueue(adapter); if (adapter->hw_status == NXPWIFI_HW_STATUS_READY) { pr_debug("info: %s: shutdown nxpwifi\n", __func__); nxpwifi_shutdown_drv(adapter); nxpwifi_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) nxpwifi_free_adapter(adapter); /* Tell all current and future waiters we're finished */ complete_all(fw_done); return ret; } static void nxpwifi_fw_dpc(const struct firmware *firmware, void *context) { _nxpwifi_fw_dpc(firmware, context); } /* Request firmware (sync/async) and start HW init. */ static int nxpwifi_init_hw_fw(struct nxpwifi_adapter *adapter, bool req_fw_nowait) { int ret; if (req_fw_nowait) { ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name, adapter->dev, GFP_KERNEL, adapter, nxpwifi_fw_dpc); } else { ret = request_firmware(&adapter->firmware, adapter->fw_name, adapter->dev); } if (ret < 0) nxpwifi_dbg(adapter, ERROR, "request_firmware%s error %d\n", req_fw_nowait ? "_nowait" : "", ret); return ret; } /* ndo_open: bring carrier down. */ static int nxpwifi_open(struct net_device *dev) { netif_carrier_off(dev); return 0; } /* ndo_stop: abort scan/sched-scan if running. */ static int nxpwifi_close(struct net_device *dev) { struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev); if (priv->scan_request) { struct cfg80211_scan_info info = { .aborted = true, }; nxpwifi_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) { nxpwifi_dbg(priv->adapter, INFO, "aborting bgscan on ndo_stop\n"); nxpwifi_stop_bg_scan(priv); cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0); } return 0; } static bool nxpwifi_bypass_tx_queue(struct nxpwifi_private *priv, struct sk_buff *skb) { struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; if (eth_hdr->h_proto == htons(ETH_P_PAE) || nxpwifi_is_skb_mgmt_frame(skb)) { nxpwifi_dbg(priv->adapter, DATA, "bypass txqueue; eth type %#x, mgmt %d\n", ntohs(eth_hdr->h_proto), nxpwifi_is_skb_mgmt_frame(skb)); if (eth_hdr->h_proto == htons(ETH_P_PAE)) nxpwifi_dbg(priv->adapter, MSG, "key: send EAPOL to %pM\n", eth_hdr->h_dest); return true; } return false; } /* Queue SKB (WMM or bypass) and schedule main work. */ void nxpwifi_queue_tx_pkt(struct nxpwifi_private *priv, struct sk_buff *skb) { struct nxpwifi_adapter *adapter = priv->adapter; struct netdev_queue *txq; int index = nxpwifi_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); nxpwifi_dbg(adapter, DATA, "stop queue: %d\n", index); } } if (nxpwifi_bypass_tx_queue(priv, skb)) { atomic_inc(&adapter->tx_pending); atomic_inc(&adapter->bypass_tx_pending); nxpwifi_wmm_add_buf_bypass_txqueue(priv, skb); } else { atomic_inc(&adapter->tx_pending); nxpwifi_wmm_add_buf_txqueue(priv, skb); } nxpwifi_queue_work(adapter, &adapter->main_work); } struct sk_buff * nxpwifi_clone_skb_for_tx_status(struct nxpwifi_private *priv, struct sk_buff *skb, u8 flag, u64 *cookie) { struct sk_buff *orig_skb = skb; struct nxpwifi_txinfo *tx_info, *orig_tx_info; u32 id32 = 0; int ret; skb = skb_clone(skb, GFP_ATOMIC); if (skb) { spin_lock_bh(&priv->ack_status_lock); /* * Use XArray to allocate IDs in the range 1..0x0F. * Limit ensures the allocated token ID is always within this * range. */ ret = xa_alloc(&priv->ack_status_frames, &id32, orig_skb, XA_LIMIT(1, 0x0f), GFP_ATOMIC); spin_unlock_bh(&priv->ack_status_lock); if (ret == 0) { tx_info = NXPWIFI_SKB_TXCB(skb); tx_info->ack_frame_id = id32; tx_info->flags |= flag; orig_tx_info = NXPWIFI_SKB_TXCB(orig_skb); orig_tx_info->ack_frame_id = id32; orig_tx_info->flags |= flag; if (flag == NXPWIFI_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; } /* ndo_start_xmit: fix headroom, fill TXCB, timestamp, enqueue. */ static netdev_tx_t nxpwifi_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev); struct sk_buff *new_skb; struct nxpwifi_txinfo *tx_info; bool multicast; nxpwifi_dbg(priv->adapter, DATA, "data: %lu BSS(%d-%d): Data <= kernel\n", jiffies, priv->bss_type, priv->bss_num); if (test_bit(NXPWIFI_SURPRISE_REMOVED, &priv->adapter->work_flags)) { kfree_skb(skb); priv->stats.tx_dropped++; return 0; } if (!skb->len || skb->len > ETH_FRAME_LEN) { nxpwifi_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) < NXPWIFI_MIN_DATA_HEADER_LEN) { nxpwifi_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, NXPWIFI_MIN_DATA_HEADER_LEN); if (unlikely(!new_skb)) { nxpwifi_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; nxpwifi_dbg(priv->adapter, INFO, "info: new skb headroomd %d\n", skb_headroom(skb)); } tx_info = NXPWIFI_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 && sk_requests_wifi_status(skb->sk) && priv->adapter->fw_api_ver == NXPWIFI_FW_V15)) skb = nxpwifi_clone_skb_for_tx_status(priv, skb, NXPWIFI_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); nxpwifi_queue_tx_pkt(priv, skb); return 0; } int nxpwifi_set_mac_address(struct nxpwifi_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 == NXPWIFI_BSS_TYPE_ANY) return -EOPNOTSUPP; mac_addr = old_mac_addr; 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 = nxpwifi_send_cmd(priv, HOST_CMD_802_11_MAC_ADDRESS, HOST_ACT_GEN_SET, 0, NULL, true); if (ret) { u64_to_ether_addr(old_mac_addr, priv->curr_addr); nxpwifi_dbg(priv->adapter, ERROR, "set mac address failed: ret=%d\n", ret); return ret; } eth_hw_addr_set(dev, priv->curr_addr); return 0; } /* ndo_set_mac_address: set MAC via firmware. */ static int nxpwifi_ndo_set_mac_address(struct net_device *dev, void *addr) { struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev); struct sockaddr *hw_addr = addr; return nxpwifi_set_mac_address(priv, dev, true, hw_addr->sa_data); } /* ndo_set_rx_mode: promisc/allmulti or program multicast. */ static void nxpwifi_set_multicast_list(struct net_device *dev) { struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev); struct nxpwifi_multicast_list mcast_list; if (dev->flags & IFF_PROMISC) { mcast_list.mode = NXPWIFI_PROMISC_MODE; } else if (dev->flags & IFF_ALLMULTI || netdev_mc_count(dev) > NXPWIFI_MAX_MULTICAST_LIST_SIZE) { mcast_list.mode = NXPWIFI_ALL_MULTI_MODE; } else { mcast_list.mode = NXPWIFI_MULTICAST_MODE; mcast_list.num_multicast_addr = nxpwifi_copy_mcast_addr(&mcast_list, dev); } nxpwifi_request_set_multicast_list(priv, &mcast_list); } /* ndo_tx_timeout: account; reset card on threshold. */ static void nxpwifi_tx_timeout(struct net_device *dev, unsigned int txqueue) { struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev); priv->num_tx_timeout++; priv->tx_timeout_cnt++; nxpwifi_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); nxpwifi_set_trans_start(dev); if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD && priv->adapter->if_ops.card_reset) { nxpwifi_dbg(priv->adapter, ERROR, "tx_timeout_cnt exceeds threshold.\t" "Triggering card reset!\n"); priv->adapter->if_ops.card_reset(priv->adapter); } } void nxpwifi_upload_device_dump(struct nxpwifi_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 */ nxpwifi_dbg(adapter, MSG, "== nxpwifi dump information to /sys/class/devcoredump start\n"); dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len, GFP_KERNEL); nxpwifi_dbg(adapter, MSG, "== nxpwifi 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(nxpwifi_upload_device_dump); void nxpwifi_drv_info_dump(struct nxpwifi_adapter *adapter) { char *p; char drv_version[64]; struct sdio_mmc_card *sdio_card; struct nxpwifi_private *priv; int i, idx; struct netdev_queue *txq; struct nxpwifi_debug_info *debug_info; nxpwifi_dbg(adapter, MSG, "===nxpwifi driverinfo dump start===\n"); p = adapter->devdump_data; strscpy(p, "========Start dump driverinfo========\n", NXPWIFI_FW_DUMP_SIZE); p += strlen("========Start dump driverinfo========\n"); p += sprintf(p, "driver_name = "); p += sprintf(p, "\"nxpwifi\"\n"); nxpwifi_drv_get_driver_version(adapter, drv_version, sizeof(drv_version) - 1); p += sprintf(p, "driver_version = %s\n", drv_version); 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 == NXPWIFI_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]->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 == NXPWIFI_SDIO) { p += sprintf(p, "\n=== %s register dump===\n", "SDIO"); 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_obj(*debug_info, GFP_KERNEL); if (debug_info) { for (i = 0; i < adapter->priv_num; i++) { if (!adapter->priv[i]->netdev) continue; priv = adapter->priv[i]; nxpwifi_get_debug_info(priv, debug_info); p += nxpwifi_debug_info_to_buffer(priv, p, debug_info); break; } kfree(debug_info); } p += sprintf(p, "\n========End dump========\n"); nxpwifi_dbg(adapter, MSG, "===nxpwifi driverinfo dump end===\n"); adapter->devdump_len = p - (char *)adapter->devdump_data; } EXPORT_SYMBOL_GPL(nxpwifi_drv_info_dump); void nxpwifi_prepare_fw_dump_info(struct nxpwifi_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 > NXPWIFI_FW_DUMP_SIZE) { /* Realloc in case buffer overflow */ fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len); nxpwifi_dbg(adapter, MSG, "Realloc device dump data.\n"); if (!fw_dump_ptr) { vfree(adapter->devdump_data); nxpwifi_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) { fw_dump_ptr += sprintf(fw_dump_ptr, "========Start dump "); fw_dump_ptr += sprintf(fw_dump_ptr, "%s", entry->mem_name); fw_dump_ptr += sprintf(fw_dump_ptr, "========\n"); memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size); fw_dump_ptr += entry->mem_size; fw_dump_ptr += sprintf(fw_dump_ptr, "\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(nxpwifi_prepare_fw_dump_info); /* ndo_get_stats: return netdev stats. */ static struct net_device_stats *nxpwifi_get_stats(struct net_device *dev) { struct nxpwifi_private *priv = nxpwifi_netdev_get_priv(dev); return &priv->stats; } static u16 nxpwifi_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb, struct net_device *sb_dev) { skb->priority = cfg80211_classify8021d(skb, NULL); return nxpwifi_1d_to_wmm_queue[skb->priority]; } /* Network device handlers */ static const struct net_device_ops nxpwifi_netdev_ops = { .ndo_open = nxpwifi_open, .ndo_stop = nxpwifi_close, .ndo_start_xmit = nxpwifi_hard_start_xmit, .ndo_set_mac_address = nxpwifi_ndo_set_mac_address, .ndo_validate_addr = eth_validate_addr, .ndo_tx_timeout = nxpwifi_tx_timeout, .ndo_get_stats = nxpwifi_get_stats, .ndo_set_rx_mode = nxpwifi_set_multicast_list, .ndo_select_queue = nxpwifi_netdev_select_wmm_queue, }; /* Init per-interface defaults: ops, addrs, mgmt IEs, stats. */ void nxpwifi_init_priv_params(struct nxpwifi_private *priv, struct net_device *dev) { dev->netdev_ops = &nxpwifi_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 nxpwifi_ie) * MAX_MGMT_IE_INDEX); priv->beacon_idx = NXPWIFI_AUTO_IDX_MASK; priv->proberesp_idx = NXPWIFI_AUTO_IDX_MASK; priv->assocresp_idx = NXPWIFI_AUTO_IDX_MASK; priv->gen_idx = NXPWIFI_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) == NXPWIFI_BSS_ROLE_STA || GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_UAP) { priv->hist_data = kmalloc_obj(*priv->hist_data, GFP_KERNEL); if (priv->hist_data) nxpwifi_hist_data_reset(priv); } } /* Return true if any command is pending. */ int nxpwifi_is_command_pending(struct nxpwifi_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; } /* Host MLME work: deliver RX; handle assoc/link-loss. */ static void nxpwifi_host_mlme_work(struct wiphy *wiphy, struct wiphy_work *work) { struct nxpwifi_adapter *adapter = container_of(work, struct nxpwifi_adapter, host_mlme_work); struct sk_buff *skb; struct nxpwifi_rxinfo *rx_info; struct nxpwifi_private *priv; if (test_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags)) return; while ((skb = skb_dequeue(&adapter->rx_mlme_q))) { rx_info = NXPWIFI_SKB_RXCB(skb); priv = adapter->priv[rx_info->bss_num]; cfg80211_rx_mlme_mgmt(priv->netdev, skb->data, rx_info->pkt_len); } /* Check for host mlme disconnection */ if (adapter->host_mlme_link_lost) { if (adapter->priv_link_lost) { nxpwifi_reset_connect_state(adapter->priv_link_lost, WLAN_REASON_DEAUTH_LEAVING, true); adapter->priv_link_lost = NULL; } adapter->host_mlme_link_lost = false; } /* Check for host mlme Assoc Resp */ if (adapter->assoc_resp_received) { nxpwifi_process_assoc_resp(adapter); adapter->assoc_resp_received = false; } } /* RX work: process RX queue. */ static void nxpwifi_rx_work(struct work_struct *work) { struct nxpwifi_adapter *adapter = container_of(work, struct nxpwifi_adapter, rx_work); if (test_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags)) return; nxpwifi_process_rx(adapter); } /* Main work: run nxpwifi_main_process(). */ static void nxpwifi_main_work(struct work_struct *work) { struct nxpwifi_adapter *adapter = container_of(work, struct nxpwifi_adapter, main_work); if (test_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags)) return; nxpwifi_main_process(adapter); } /* Teardown: disable IRQs, stop queues, shutdown, remove ifaces, unreg. */ static void nxpwifi_uninit_sw(struct nxpwifi_adapter *adapter) { struct nxpwifi_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(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags); nxpwifi_terminate_workqueue(adapter); adapter->int_status = 0; /* Stop data */ for (i = 0; i < adapter->priv_num; i++) { priv = adapter->priv[i]; if (priv->netdev) { nxpwifi_stop_net_dev_queue(priv->netdev, adapter); netif_carrier_off(priv->netdev); netif_device_detach(priv->netdev); } } nxpwifi_dbg(adapter, CMD, "cmd: calling nxpwifi_shutdown_drv...\n"); nxpwifi_shutdown_drv(adapter); nxpwifi_dbg(adapter, CMD, "cmd: nxpwifi_shutdown_drv done\n"); if (atomic_read(&adapter->rx_pending) || atomic_read(&adapter->tx_pending) || atomic_read(&adapter->cmd_pending)) { nxpwifi_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]; rtnl_lock(); if (priv->netdev && priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) { /* * Close the netdev now, because if we do it later, the * netdev notifiers will need to acquire the wiphy lock * again --> deadlock. */ dev_close(priv->wdev.netdev); wiphy_lock(adapter->wiphy); nxpwifi_del_virtual_intf(adapter->wiphy, &priv->wdev); wiphy_unlock(adapter->wiphy); } rtnl_unlock(); } wiphy_unregister(adapter->wiphy); wiphy_free(adapter->wiphy); adapter->wiphy = NULL; vfree(adapter->chan_stats); nxpwifi_free_cmd_buffers(adapter); } /* Shut down SW/FW and mark device down. */ void nxpwifi_shutdown_sw(struct nxpwifi_adapter *adapter) { struct nxpwifi_private *priv; if (!adapter) return; wait_for_completion(adapter->fw_done); /* Caller should ensure we aren't suspending while this happens */ reinit_completion(adapter->fw_done); priv = nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_ANY); nxpwifi_deauthenticate(priv, NULL); nxpwifi_init_shutdown_fw(priv, NXPWIFI_FUNC_SHUTDOWN); nxpwifi_uninit_sw(adapter); adapter->is_up = false; } EXPORT_SYMBOL_GPL(nxpwifi_shutdown_sw); /* Re-init adapter SW and bring device up. */ int nxpwifi_reinit_sw(struct nxpwifi_adapter *adapter) { int ret = 0; nxpwifi_init_lock_list(adapter); if (adapter->if_ops.up_dev) adapter->if_ops.up_dev(adapter); adapter->hw_status = NXPWIFI_HW_STATUS_INITIALIZING; clear_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags); clear_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags); adapter->hs_activated = false; clear_bit(NXPWIFI_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->rx_work_enabled = true; adapter->workqueue = alloc_workqueue("NXPWIFI_WORK_QUEUE", WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0); if (!adapter->workqueue) { ret = -ENOMEM; goto err_kmalloc; } INIT_WORK(&adapter->main_work, nxpwifi_main_work); if (adapter->rx_work_enabled) { adapter->rx_workqueue = alloc_workqueue("NXPWIFI_RX_WORK_QUEUE", WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0); if (!adapter->rx_workqueue) { ret = -ENOMEM; goto err_kmalloc; } INIT_WORK(&adapter->rx_work, nxpwifi_rx_work); } wiphy_work_init(&adapter->host_mlme_work, nxpwifi_host_mlme_work); /* * Register the device. Fill up the private data structure with * relevant information from the card. Some code extracted from * nxpwifi_register_dev() */ nxpwifi_dbg(adapter, INFO, "%s, nxpwifi_init_hw_fw()...\n", __func__); ret = nxpwifi_init_hw_fw(adapter, false); if (ret) { nxpwifi_dbg(adapter, ERROR, "%s: firmware init failed\n", __func__); goto err_init_fw; } /* _nxpwifi_fw_dpc() does its own cleanup */ ret = _nxpwifi_fw_dpc(adapter->firmware, adapter); if (ret) { pr_err("Failed to bring up adapter: %d\n", ret); return ret; } nxpwifi_dbg(adapter, INFO, "%s, successful\n", __func__); return ret; err_init_fw: nxpwifi_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(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags); nxpwifi_terminate_workqueue(adapter); if (adapter->hw_status == NXPWIFI_HW_STATUS_READY) { nxpwifi_dbg(adapter, ERROR, "info: %s: shutdown nxpwifi\n", __func__); nxpwifi_shutdown_drv(adapter); nxpwifi_free_cmd_buffers(adapter); } complete_all(adapter->fw_done); nxpwifi_dbg(adapter, INFO, "%s, error\n", __func__); return ret; } EXPORT_SYMBOL_GPL(nxpwifi_reinit_sw); /* Add card: register adapter, workqueues, device; request FW (async). */ int nxpwifi_add_card(void *card, struct completion *fw_done, struct nxpwifi_if_ops *if_ops, u8 iface_type, struct device *dev) { struct nxpwifi_adapter *adapter; int ret = 0; adapter = nxpwifi_register(card, dev, if_ops); if (IS_ERR(adapter)) { ret = PTR_ERR(adapter); pr_err("%s: adapter register failed %d\n", __func__, ret); goto err_init_sw; } adapter->iface_type = iface_type; adapter->fw_done = fw_done; adapter->hw_status = NXPWIFI_HW_STATUS_INITIALIZING; clear_bit(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags); clear_bit(NXPWIFI_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->rx_work_enabled = true; adapter->workqueue = alloc_workqueue("NXPWIFI_WORK_QUEUE", WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0); if (!adapter->workqueue) { ret = -ENOMEM; goto err_kmalloc; } INIT_WORK(&adapter->main_work, nxpwifi_main_work); if (adapter->rx_work_enabled) { adapter->rx_workqueue = alloc_workqueue("NXPWIFI_RX_WORK_QUEUE", WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0); if (!adapter->rx_workqueue) { ret = -ENOMEM; goto err_kmalloc; } INIT_WORK(&adapter->rx_work, nxpwifi_rx_work); } wiphy_work_init(&adapter->host_mlme_work, nxpwifi_host_mlme_work); /* * Register the device. Fill up the private data structure with relevant * information from the card. */ ret = adapter->if_ops.register_dev(adapter); if (ret) { pr_err("%s: failed to register nxpwifi device\n", __func__); goto err_registerdev; } ret = nxpwifi_init_hw_fw(adapter, true); if (ret) { pr_err("%s: firmware init failed\n", __func__); goto err_init_fw; } return ret; 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(NXPWIFI_SURPRISE_REMOVED, &adapter->work_flags); err_kmalloc: nxpwifi_terminate_workqueue(adapter); if (adapter->hw_status == NXPWIFI_HW_STATUS_READY) { pr_debug("info: %s: shutdown nxpwifi\n", __func__); nxpwifi_shutdown_drv(adapter); nxpwifi_free_cmd_buffers(adapter); } nxpwifi_free_adapter(adapter); err_init_sw: return ret; } EXPORT_SYMBOL_GPL(nxpwifi_add_card); /* Remove card: teardown SW, unregister device, free adapter. */ void nxpwifi_remove_card(struct nxpwifi_adapter *adapter) { if (!adapter) return; if (adapter->is_up) nxpwifi_uninit_sw(adapter); /* Unregister device */ nxpwifi_dbg(adapter, INFO, "info: unregister device\n"); if (adapter->if_ops.unregister_dev) adapter->if_ops.unregister_dev(adapter); /* Free adapter structure */ nxpwifi_dbg(adapter, INFO, "info: free adapter\n"); nxpwifi_free_adapter(adapter); } EXPORT_SYMBOL_GPL(nxpwifi_remove_card); void _nxpwifi_dbg(const struct nxpwifi_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(_nxpwifi_dbg); /* Module init: init debugfs if enabled. */ static int nxpwifi_init_module(void) { #ifdef CONFIG_DEBUG_FS nxpwifi_debugfs_init(); #endif return 0; } /* Module exit: remove debugfs if enabled. */ static void nxpwifi_cleanup_module(void) { #ifdef CONFIG_DEBUG_FS nxpwifi_debugfs_remove(); #endif } module_init(nxpwifi_init_module); module_exit(nxpwifi_cleanup_module); MODULE_AUTHOR("NXP International Ltd."); MODULE_DESCRIPTION("NXP WiFi Driver version " VERSION); MODULE_VERSION(VERSION); MODULE_LICENSE("GPL");