/****************************************************************************** * * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved. * * Portions of this file are derived from the ipw3945 project, as well * as portions of the ieee80211 subsystem header files. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA * * The full GNU General Public License is included in this distribution in the * file called LICENSE. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include #include #include #include #include #include #include #include #include #include #include #include "iwl-eeprom.h" #include "iwl-dev.h" #include "iwl-io.h" #include "iwl-agn-calib.h" #include "iwl-agn.h" #include "iwl-trans.h" #include "iwl-op-mode.h" #include "iwl-drv.h" #include "iwl-modparams.h" /****************************************************************************** * * module boiler plate * ******************************************************************************/ /* * module name, copyright, version, etc. */ #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux" #ifdef CONFIG_IWLWIFI_DEBUG #define VD "d" #else #define VD #endif #define DRV_VERSION IWLWIFI_VERSION VD MODULE_DESCRIPTION(DRV_DESCRIPTION); MODULE_VERSION(DRV_VERSION); MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); MODULE_LICENSE("GPL"); MODULE_ALIAS("iwlagn"); void iwl_update_chain_flags(struct iwl_priv *priv) { struct iwl_rxon_context *ctx; for_each_context(priv, ctx) { iwlagn_set_rxon_chain(priv, ctx); if (ctx->active.rx_chain != ctx->staging.rx_chain) iwlagn_commit_rxon(priv, ctx); } } /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */ static void iwl_set_beacon_tim(struct iwl_priv *priv, struct iwl_tx_beacon_cmd *tx_beacon_cmd, u8 *beacon, u32 frame_size) { u16 tim_idx; struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; /* * The index is relative to frame start but we start looking at the * variable-length part of the beacon. */ tim_idx = mgmt->u.beacon.variable - beacon; /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ while ((tim_idx < (frame_size - 2)) && (beacon[tim_idx] != WLAN_EID_TIM)) tim_idx += beacon[tim_idx+1] + 2; /* If TIM field was found, set variables */ if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx); tx_beacon_cmd->tim_size = beacon[tim_idx+1]; } else IWL_WARN(priv, "Unable to find TIM Element in beacon\n"); } int iwlagn_send_beacon_cmd(struct iwl_priv *priv) { struct iwl_tx_beacon_cmd *tx_beacon_cmd; struct iwl_host_cmd cmd = { .id = REPLY_TX_BEACON, .flags = CMD_SYNC, }; struct ieee80211_tx_info *info; u32 frame_size; u32 rate_flags; u32 rate; /* * We have to set up the TX command, the TX Beacon command, and the * beacon contents. */ lockdep_assert_held(&priv->mutex); if (!priv->beacon_ctx) { IWL_ERR(priv, "trying to build beacon w/o beacon context!\n"); return 0; } if (WARN_ON(!priv->beacon_skb)) return -EINVAL; /* Allocate beacon command */ if (!priv->beacon_cmd) priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL); tx_beacon_cmd = priv->beacon_cmd; if (!tx_beacon_cmd) return -ENOMEM; frame_size = priv->beacon_skb->len; /* Set up TX command fields */ tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size); tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id; tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK | TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK; /* Set up TX beacon command fields */ iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data, frame_size); /* Set up packet rate and flags */ info = IEEE80211_SKB_CB(priv->beacon_skb); /* * Let's set up the rate at least somewhat correctly; * it will currently not actually be used by the uCode, * it uses the broadcast station's rate instead. */ if (info->control.rates[0].idx < 0 || info->control.rates[0].flags & IEEE80211_TX_RC_MCS) rate = 0; else rate = info->control.rates[0].idx; priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, priv->hw_params.valid_tx_ant); rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant); /* In mac80211, rates for 5 GHz start at 0 */ if (info->band == IEEE80211_BAND_5GHZ) rate += IWL_FIRST_OFDM_RATE; else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE) rate_flags |= RATE_MCS_CCK_MSK; tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags); /* Submit command */ cmd.len[0] = sizeof(*tx_beacon_cmd); cmd.data[0] = tx_beacon_cmd; cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; cmd.len[1] = frame_size; cmd.data[1] = priv->beacon_skb->data; cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY; return iwl_dvm_send_cmd(priv, &cmd); } static void iwl_bg_beacon_update(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, beacon_update); struct sk_buff *beacon; mutex_lock(&priv->mutex); if (!priv->beacon_ctx) { IWL_ERR(priv, "updating beacon w/o beacon context!\n"); goto out; } if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) { /* * The ucode will send beacon notifications even in * IBSS mode, but we don't want to process them. But * we need to defer the type check to here due to * requiring locking around the beacon_ctx access. */ goto out; } /* Pull updated AP beacon from mac80211. will fail if not in AP mode */ beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif); if (!beacon) { IWL_ERR(priv, "update beacon failed -- keeping old\n"); goto out; } /* new beacon skb is allocated every time; dispose previous.*/ dev_kfree_skb(priv->beacon_skb); priv->beacon_skb = beacon; iwlagn_send_beacon_cmd(priv); out: mutex_unlock(&priv->mutex); } static void iwl_bg_bt_runtime_config(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, bt_runtime_config); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; /* dont send host command if rf-kill is on */ if (!iwl_is_ready_rf(priv)) return; iwlagn_send_advance_bt_config(priv); } static void iwl_bg_bt_full_concurrency(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, bt_full_concurrency); struct iwl_rxon_context *ctx; mutex_lock(&priv->mutex); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) goto out; /* dont send host command if rf-kill is on */ if (!iwl_is_ready_rf(priv)) goto out; IWL_DEBUG_INFO(priv, "BT coex in %s mode\n", priv->bt_full_concurrent ? "full concurrency" : "3-wire"); /* * LQ & RXON updated cmds must be sent before BT Config cmd * to avoid 3-wire collisions */ for_each_context(priv, ctx) { iwlagn_set_rxon_chain(priv, ctx); iwlagn_commit_rxon(priv, ctx); } iwlagn_send_advance_bt_config(priv); out: mutex_unlock(&priv->mutex); } int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear) { struct iwl_statistics_cmd statistics_cmd = { .configuration_flags = clear ? IWL_STATS_CONF_CLEAR_STATS : 0, }; if (flags & CMD_ASYNC) return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, CMD_ASYNC, sizeof(struct iwl_statistics_cmd), &statistics_cmd); else return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, CMD_SYNC, sizeof(struct iwl_statistics_cmd), &statistics_cmd); } /** * iwl_bg_statistics_periodic - Timer callback to queue statistics * * This callback is provided in order to send a statistics request. * * This timer function is continually reset to execute within * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION * was received. We need to ensure we receive the statistics in order * to update the temperature used for calibrating the TXPOWER. */ static void iwl_bg_statistics_periodic(unsigned long data) { struct iwl_priv *priv = (struct iwl_priv *)data; if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; /* dont send host command if rf-kill is on */ if (!iwl_is_ready_rf(priv)) return; iwl_send_statistics_request(priv, CMD_ASYNC, false); } static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base, u32 start_idx, u32 num_events, u32 capacity, u32 mode) { u32 i; u32 ptr; /* SRAM byte address of log data */ u32 ev, time, data; /* event log data */ unsigned long reg_flags; if (mode == 0) ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32)); else ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32)); /* Make sure device is powered up for SRAM reads */ spin_lock_irqsave(&priv->trans->reg_lock, reg_flags); if (unlikely(!iwl_grab_nic_access(priv->trans))) { spin_unlock_irqrestore(&priv->trans->reg_lock, reg_flags); return; } /* Set starting address; reads will auto-increment */ iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr); /* * Refuse to read more than would have fit into the log from * the current start_idx. This used to happen due to the race * described below, but now WARN because the code below should * prevent it from happening here. */ if (WARN_ON(num_events > capacity - start_idx)) num_events = capacity - start_idx; /* * "time" is actually "data" for mode 0 (no timestamp). * place event id # at far right for easier visual parsing. */ for (i = 0; i < num_events; i++) { ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); if (mode == 0) { trace_iwlwifi_dev_ucode_cont_event( priv->trans->dev, 0, time, ev); } else { data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT); trace_iwlwifi_dev_ucode_cont_event( priv->trans->dev, time, data, ev); } } /* Allow device to power down */ iwl_release_nic_access(priv->trans); spin_unlock_irqrestore(&priv->trans->reg_lock, reg_flags); } static void iwl_continuous_event_trace(struct iwl_priv *priv) { u32 capacity; /* event log capacity in # entries */ struct { u32 capacity; u32 mode; u32 wrap_counter; u32 write_counter; } __packed read; u32 base; /* SRAM byte address of event log header */ u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ u32 num_wraps; /* # times uCode wrapped to top of log */ u32 next_entry; /* index of next entry to be written by uCode */ base = priv->device_pointers.log_event_table; if (iwlagn_hw_valid_rtc_data_addr(base)) { iwl_read_targ_mem_words(priv->trans, base, &read, sizeof(read)); capacity = read.capacity; mode = read.mode; num_wraps = read.wrap_counter; next_entry = read.write_counter; } else return; /* * Unfortunately, the uCode doesn't use temporary variables. * Therefore, it can happen that we read next_entry == capacity, * which really means next_entry == 0. */ if (unlikely(next_entry == capacity)) next_entry = 0; /* * Additionally, the uCode increases the write pointer before * the wraps counter, so if the write pointer is smaller than * the old write pointer (wrap occurred) but we read that no * wrap occurred, we actually read between the next_entry and * num_wraps update (this does happen in practice!!) -- take * that into account by increasing num_wraps. */ if (unlikely(next_entry < priv->event_log.next_entry && num_wraps == priv->event_log.num_wraps)) num_wraps++; if (num_wraps == priv->event_log.num_wraps) { iwl_print_cont_event_trace( priv, base, priv->event_log.next_entry, next_entry - priv->event_log.next_entry, capacity, mode); priv->event_log.non_wraps_count++; } else { if (num_wraps - priv->event_log.num_wraps > 1) priv->event_log.wraps_more_count++; else priv->event_log.wraps_once_count++; trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev, num_wraps - priv->event_log.num_wraps, next_entry, priv->event_log.next_entry); if (next_entry < priv->event_log.next_entry) { iwl_print_cont_event_trace( priv, base, priv->event_log.next_entry, capacity - priv->event_log.next_entry, capacity, mode); iwl_print_cont_event_trace( priv, base, 0, next_entry, capacity, mode); } else { iwl_print_cont_event_trace( priv, base, next_entry, capacity - next_entry, capacity, mode); iwl_print_cont_event_trace( priv, base, 0, next_entry, capacity, mode); } } priv->event_log.num_wraps = num_wraps; priv->event_log.next_entry = next_entry; } /** * iwl_bg_ucode_trace - Timer callback to log ucode event * * The timer is continually set to execute every * UCODE_TRACE_PERIOD milliseconds after the last timer expired * this function is to perform continuous uCode event logging operation * if enabled */ static void iwl_bg_ucode_trace(unsigned long data) { struct iwl_priv *priv = (struct iwl_priv *)data; if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; if (priv->event_log.ucode_trace) { iwl_continuous_event_trace(priv); /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */ mod_timer(&priv->ucode_trace, jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD)); } } static void iwl_bg_tx_flush(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, tx_flush); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; /* do nothing if rf-kill is on */ if (!iwl_is_ready_rf(priv)) return; IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n"); iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL); } /* * queue/FIFO/AC mapping definitions */ #define IWL_TX_FIFO_BK 0 /* shared */ #define IWL_TX_FIFO_BE 1 #define IWL_TX_FIFO_VI 2 /* shared */ #define IWL_TX_FIFO_VO 3 #define IWL_TX_FIFO_BK_IPAN IWL_TX_FIFO_BK #define IWL_TX_FIFO_BE_IPAN 4 #define IWL_TX_FIFO_VI_IPAN IWL_TX_FIFO_VI #define IWL_TX_FIFO_VO_IPAN 5 /* re-uses the VO FIFO, uCode will properly flush/schedule */ #define IWL_TX_FIFO_AUX 5 #define IWL_TX_FIFO_UNUSED -1 #define IWLAGN_CMD_FIFO_NUM 7 /* * This queue number is required for proper operation * because the ucode will stop/start the scheduler as * required. */ #define IWL_IPAN_MCAST_QUEUE 8 static const u8 iwlagn_default_queue_to_tx_fifo[] = { IWL_TX_FIFO_VO, IWL_TX_FIFO_VI, IWL_TX_FIFO_BE, IWL_TX_FIFO_BK, IWLAGN_CMD_FIFO_NUM, }; static const u8 iwlagn_ipan_queue_to_tx_fifo[] = { IWL_TX_FIFO_VO, IWL_TX_FIFO_VI, IWL_TX_FIFO_BE, IWL_TX_FIFO_BK, IWL_TX_FIFO_BK_IPAN, IWL_TX_FIFO_BE_IPAN, IWL_TX_FIFO_VI_IPAN, IWL_TX_FIFO_VO_IPAN, IWL_TX_FIFO_BE_IPAN, IWLAGN_CMD_FIFO_NUM, IWL_TX_FIFO_AUX, }; static const u8 iwlagn_bss_ac_to_fifo[] = { IWL_TX_FIFO_VO, IWL_TX_FIFO_VI, IWL_TX_FIFO_BE, IWL_TX_FIFO_BK, }; static const u8 iwlagn_bss_ac_to_queue[] = { 0, 1, 2, 3, }; static const u8 iwlagn_pan_ac_to_fifo[] = { IWL_TX_FIFO_VO_IPAN, IWL_TX_FIFO_VI_IPAN, IWL_TX_FIFO_BE_IPAN, IWL_TX_FIFO_BK_IPAN, }; static const u8 iwlagn_pan_ac_to_queue[] = { 7, 6, 5, 4, }; void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags) { int i; /* * The default context is always valid, * the PAN context depends on uCode. */ priv->valid_contexts = BIT(IWL_RXON_CTX_BSS); if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN); for (i = 0; i < NUM_IWL_RXON_CTX; i++) priv->contexts[i].ctxid = i; priv->contexts[IWL_RXON_CTX_BSS].always_active = true; priv->contexts[IWL_RXON_CTX_BSS].is_active = true; priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON; priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING; priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC; priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM; priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID; priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY; priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID; priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes = BIT(NL80211_IFTYPE_ADHOC); priv->contexts[IWL_RXON_CTX_BSS].interface_modes = BIT(NL80211_IFTYPE_STATION); priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP; priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS; priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS; priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS; memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue, iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue)); memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo, iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo)); priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON; priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = REPLY_WIPAN_RXON_TIMING; priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = REPLY_WIPAN_RXON_ASSOC; priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM; priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN; priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY; priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID; priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION; priv->contexts[IWL_RXON_CTX_PAN].interface_modes = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP); if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P) priv->contexts[IWL_RXON_CTX_PAN].interface_modes |= BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO); priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP; priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA; priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P; memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue, iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue)); memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo, iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo)); priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE; BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); } void iwl_rf_kill_ct_config(struct iwl_priv *priv) { struct iwl_ct_kill_config cmd; struct iwl_ct_kill_throttling_config adv_cmd; int ret = 0; iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT); priv->thermal_throttle.ct_kill_toggle = false; if (priv->cfg->base_params->support_ct_kill_exit) { adv_cmd.critical_temperature_enter = cpu_to_le32(priv->hw_params.ct_kill_threshold); adv_cmd.critical_temperature_exit = cpu_to_le32(priv->hw_params.ct_kill_exit_threshold); ret = iwl_dvm_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD, CMD_SYNC, sizeof(adv_cmd), &adv_cmd); if (ret) IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); else IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " "succeeded, critical temperature enter is %d," "exit is %d\n", priv->hw_params.ct_kill_threshold, priv->hw_params.ct_kill_exit_threshold); } else { cmd.critical_temperature_R = cpu_to_le32(priv->hw_params.ct_kill_threshold); ret = iwl_dvm_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD, CMD_SYNC, sizeof(cmd), &cmd); if (ret) IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n"); else IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD " "succeeded, " "critical temperature is %d\n", priv->hw_params.ct_kill_threshold); } } static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg) { struct iwl_calib_cfg_cmd calib_cfg_cmd; struct iwl_host_cmd cmd = { .id = CALIBRATION_CFG_CMD, .len = { sizeof(struct iwl_calib_cfg_cmd), }, .data = { &calib_cfg_cmd, }, }; memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd)); calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL; calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg); return iwl_dvm_send_cmd(priv, &cmd); } static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant) { struct iwl_tx_ant_config_cmd tx_ant_cmd = { .valid = cpu_to_le32(valid_tx_ant), }; if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) { IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant); return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, CMD_SYNC, sizeof(struct iwl_tx_ant_config_cmd), &tx_ant_cmd); } else { IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n"); return -EOPNOTSUPP; } } void iwl_send_bt_config(struct iwl_priv *priv) { struct iwl_bt_cmd bt_cmd = { .lead_time = BT_LEAD_TIME_DEF, .max_kill = BT_MAX_KILL_DEF, .kill_ack_mask = 0, .kill_cts_mask = 0, }; if (!iwlwifi_mod_params.bt_coex_active) bt_cmd.flags = BT_COEX_DISABLE; else bt_cmd.flags = BT_COEX_ENABLE; priv->bt_enable_flag = bt_cmd.flags; IWL_DEBUG_INFO(priv, "BT coex %s\n", (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active"); if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG, CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd)) IWL_ERR(priv, "failed to send BT Coex Config\n"); } /** * iwl_alive_start - called after REPLY_ALIVE notification received * from protocol/runtime uCode (initialization uCode's * Alive gets handled by iwl_init_alive_start()). */ int iwl_alive_start(struct iwl_priv *priv) { int ret = 0; struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; IWL_DEBUG_INFO(priv, "Runtime Alive received.\n"); /* After the ALIVE response, we can send host commands to the uCode */ set_bit(STATUS_ALIVE, &priv->status); if (iwl_is_rfkill(priv)) return -ERFKILL; if (priv->event_log.ucode_trace) { /* start collecting data now */ mod_timer(&priv->ucode_trace, jiffies); } /* download priority table before any calibration request */ if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist) { /* Configure Bluetooth device coexistence support */ if (priv->cfg->bt_params->bt_sco_disable) priv->bt_enable_pspoll = false; else priv->bt_enable_pspoll = true; priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; iwlagn_send_advance_bt_config(priv); priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS; priv->cur_rssi_ctx = NULL; iwl_send_prio_tbl(priv); /* FIXME: w/a to force change uCode BT state machine */ ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN, BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); if (ret) return ret; ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE, BT_COEX_PRIO_TBL_EVT_INIT_CALIB2); if (ret) return ret; } else { /* * default is 2-wire BT coexexistence support */ iwl_send_bt_config(priv); } /* * Perform runtime calibrations, including DC calibration. */ iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX); ieee80211_wake_queues(priv->hw); /* Configure Tx antenna selection based on H/W config */ iwlagn_send_tx_ant_config(priv, priv->hw_params.valid_tx_ant); if (iwl_is_associated_ctx(ctx) && !priv->wowlan) { struct iwl_rxon_cmd *active_rxon = (struct iwl_rxon_cmd *)&ctx->active; /* apply any changes in staging */ ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK; } else { struct iwl_rxon_context *tmp; /* Initialize our rx_config data */ for_each_context(priv, tmp) iwl_connection_init_rx_config(priv, tmp); iwlagn_set_rxon_chain(priv, ctx); } if (!priv->wowlan) { /* WoWLAN ucode will not reply in the same way, skip it */ iwl_reset_run_time_calib(priv); } set_bit(STATUS_READY, &priv->status); /* Configure the adapter for unassociated operation */ ret = iwlagn_commit_rxon(priv, ctx); if (ret) return ret; /* At this point, the NIC is initialized and operational */ iwl_rf_kill_ct_config(priv); IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n"); return iwl_power_update_mode(priv, true); } /** * iwl_clear_driver_stations - clear knowledge of all stations from driver * @priv: iwl priv struct * * This is called during iwl_down() to make sure that in the case * we're coming there from a hardware restart mac80211 will be * able to reconfigure stations -- if we're getting there in the * normal down flow then the stations will already be cleared. */ static void iwl_clear_driver_stations(struct iwl_priv *priv) { struct iwl_rxon_context *ctx; spin_lock_bh(&priv->sta_lock); memset(priv->stations, 0, sizeof(priv->stations)); priv->num_stations = 0; priv->ucode_key_table = 0; for_each_context(priv, ctx) { /* * Remove all key information that is not stored as part * of station information since mac80211 may not have had * a chance to remove all the keys. When device is * reconfigured by mac80211 after an error all keys will * be reconfigured. */ memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys)); ctx->key_mapping_keys = 0; } spin_unlock_bh(&priv->sta_lock); } void iwl_down(struct iwl_priv *priv) { int exit_pending; IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n"); lockdep_assert_held(&priv->mutex); iwl_scan_cancel_timeout(priv, 200); /* * If active, scanning won't cancel it, so say it expired. * No race since we hold the mutex here and a new one * can't come in at this time. */ ieee80211_remain_on_channel_expired(priv->hw); exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status); iwl_clear_ucode_stations(priv, NULL); iwl_dealloc_bcast_stations(priv); iwl_clear_driver_stations(priv); /* reset BT coex data */ priv->bt_status = 0; priv->cur_rssi_ctx = NULL; priv->bt_is_sco = 0; if (priv->cfg->bt_params) priv->bt_traffic_load = priv->cfg->bt_params->bt_init_traffic_load; else priv->bt_traffic_load = 0; priv->bt_full_concurrent = false; priv->bt_ci_compliance = 0; /* Wipe out the EXIT_PENDING status bit if we are not actually * exiting the module */ if (!exit_pending) clear_bit(STATUS_EXIT_PENDING, &priv->status); if (priv->mac80211_registered) ieee80211_stop_queues(priv->hw); priv->ucode_loaded = false; iwl_trans_stop_device(priv->trans); /* Clear out all status bits but a few that are stable across reset */ priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) << STATUS_RF_KILL_HW | test_bit(STATUS_GEO_CONFIGURED, &priv->status) << STATUS_GEO_CONFIGURED | test_bit(STATUS_FW_ERROR, &priv->status) << STATUS_FW_ERROR | test_bit(STATUS_EXIT_PENDING, &priv->status) << STATUS_EXIT_PENDING; dev_kfree_skb(priv->beacon_skb); priv->beacon_skb = NULL; } /***************************************************************************** * * Workqueue callbacks * *****************************************************************************/ static void iwl_bg_run_time_calib_work(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, run_time_calib_work); mutex_lock(&priv->mutex); if (test_bit(STATUS_EXIT_PENDING, &priv->status) || test_bit(STATUS_SCANNING, &priv->status)) { mutex_unlock(&priv->mutex); return; } if (priv->start_calib) { iwl_chain_noise_calibration(priv); iwl_sensitivity_calibration(priv); } mutex_unlock(&priv->mutex); } void iwlagn_prepare_restart(struct iwl_priv *priv) { struct iwl_rxon_context *ctx; bool bt_full_concurrent; u8 bt_ci_compliance; u8 bt_load; u8 bt_status; bool bt_is_sco; int i; lockdep_assert_held(&priv->mutex); for_each_context(priv, ctx) ctx->vif = NULL; priv->is_open = 0; /* * __iwl_down() will clear the BT status variables, * which is correct, but when we restart we really * want to keep them so restore them afterwards. * * The restart process will later pick them up and * re-configure the hw when we reconfigure the BT * command. */ bt_full_concurrent = priv->bt_full_concurrent; bt_ci_compliance = priv->bt_ci_compliance; bt_load = priv->bt_traffic_load; bt_status = priv->bt_status; bt_is_sco = priv->bt_is_sco; iwl_down(priv); priv->bt_full_concurrent = bt_full_concurrent; priv->bt_ci_compliance = bt_ci_compliance; priv->bt_traffic_load = bt_load; priv->bt_status = bt_status; priv->bt_is_sco = bt_is_sco; /* reset aggregation queues */ for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++) priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; /* and stop counts */ for (i = 0; i < IWL_MAX_HW_QUEUES; i++) atomic_set(&priv->queue_stop_count[i], 0); memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc)); } static void iwl_bg_restart(struct work_struct *data) { struct iwl_priv *priv = container_of(data, struct iwl_priv, restart); if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return; if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) { mutex_lock(&priv->mutex); iwlagn_prepare_restart(priv); mutex_unlock(&priv->mutex); iwl_cancel_deferred_work(priv); ieee80211_restart_hw(priv->hw); } else { WARN_ON(1); } } void iwlagn_disable_roc(struct iwl_priv *priv) { struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN]; lockdep_assert_held(&priv->mutex); if (!priv->hw_roc_setup) return; ctx->staging.dev_type = RXON_DEV_TYPE_P2P; ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; priv->hw_roc_channel = NULL; memset(ctx->staging.node_addr, 0, ETH_ALEN); iwlagn_commit_rxon(priv, ctx); ctx->is_active = false; priv->hw_roc_setup = false; } static void iwlagn_disable_roc_work(struct work_struct *work) { struct iwl_priv *priv = container_of(work, struct iwl_priv, hw_roc_disable_work.work); mutex_lock(&priv->mutex); iwlagn_disable_roc(priv); mutex_unlock(&priv->mutex); } /***************************************************************************** * * driver setup and teardown * *****************************************************************************/ void iwl_setup_deferred_work(struct iwl_priv *priv) { priv->workqueue = create_singlethread_workqueue(DRV_NAME); INIT_WORK(&priv->restart, iwl_bg_restart); INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update); INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work); INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush); INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency); INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config); INIT_DELAYED_WORK(&priv->hw_roc_disable_work, iwlagn_disable_roc_work); iwl_setup_scan_deferred_work(priv); if (priv->cfg->bt_params) iwlagn_bt_setup_deferred_work(priv); init_timer(&priv->statistics_periodic); priv->statistics_periodic.data = (unsigned long)priv; priv->statistics_periodic.function = iwl_bg_statistics_periodic; init_timer(&priv->ucode_trace); priv->ucode_trace.data = (unsigned long)priv; priv->ucode_trace.function = iwl_bg_ucode_trace; } void iwl_cancel_deferred_work(struct iwl_priv *priv) { if (priv->cfg->bt_params) iwlagn_bt_cancel_deferred_work(priv); cancel_work_sync(&priv->run_time_calib_work); cancel_work_sync(&priv->beacon_update); iwl_cancel_scan_deferred_work(priv); cancel_work_sync(&priv->bt_full_concurrency); cancel_work_sync(&priv->bt_runtime_config); cancel_delayed_work_sync(&priv->hw_roc_disable_work); del_timer_sync(&priv->statistics_periodic); del_timer_sync(&priv->ucode_trace); } static void iwl_init_hw_rates(struct ieee80211_rate *rates) { int i; for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) { rates[i].bitrate = iwl_rates[i].ieee * 5; rates[i].hw_value = i; /* Rate scaling will work on indexes */ rates[i].hw_value_short = i; rates[i].flags = 0; if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) { /* * If CCK != 1M then set short preamble rate flag. */ rates[i].flags |= (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ? 0 : IEEE80211_RATE_SHORT_PREAMBLE; } } } #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */ #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */ static void iwl_init_ht_hw_capab(const struct iwl_priv *priv, struct ieee80211_sta_ht_cap *ht_info, enum ieee80211_band band) { u16 max_bit_rate = 0; u8 rx_chains_num = priv->hw_params.rx_chains_num; u8 tx_chains_num = priv->hw_params.tx_chains_num; ht_info->cap = 0; memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); ht_info->ht_supported = true; if (priv->cfg->ht_params && priv->cfg->ht_params->ht_greenfield_support) ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD; ht_info->cap |= IEEE80211_HT_CAP_SGI_20; max_bit_rate = MAX_BIT_RATE_20_MHZ; if (priv->hw_params.ht40_channel & BIT(band)) { ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; ht_info->cap |= IEEE80211_HT_CAP_SGI_40; ht_info->mcs.rx_mask[4] = 0x01; max_bit_rate = MAX_BIT_RATE_40_MHZ; } if (iwlwifi_mod_params.amsdu_size_8K) ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU; ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; ht_info->mcs.rx_mask[0] = 0xFF; if (rx_chains_num >= 2) ht_info->mcs.rx_mask[1] = 0xFF; if (rx_chains_num >= 3) ht_info->mcs.rx_mask[2] = 0xFF; /* Highest supported Rx data rate */ max_bit_rate *= rx_chains_num; WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK); ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate); /* Tx MCS capabilities */ ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; if (tx_chains_num != rx_chains_num) { ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; ht_info->mcs.tx_params |= ((tx_chains_num - 1) << IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); } } /** * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom */ static int iwl_init_geos(struct iwl_priv *priv) { struct iwl_channel_info *ch; struct ieee80211_supported_band *sband; struct ieee80211_channel *channels; struct ieee80211_channel *geo_ch; struct ieee80211_rate *rates; int i = 0; s8 max_tx_power = IWLAGN_TX_POWER_TARGET_POWER_MIN; if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates || priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) { IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n"); set_bit(STATUS_GEO_CONFIGURED, &priv->status); return 0; } channels = kcalloc(priv->channel_count, sizeof(struct ieee80211_channel), GFP_KERNEL); if (!channels) return -ENOMEM; rates = kcalloc(IWL_RATE_COUNT_LEGACY, sizeof(struct ieee80211_rate), GFP_KERNEL); if (!rates) { kfree(channels); return -ENOMEM; } /* 5.2GHz channels start after the 2.4GHz channels */ sband = &priv->bands[IEEE80211_BAND_5GHZ]; sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)]; /* just OFDM */ sband->bitrates = &rates[IWL_FIRST_OFDM_RATE]; sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE; if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE) iwl_init_ht_hw_capab(priv, &sband->ht_cap, IEEE80211_BAND_5GHZ); sband = &priv->bands[IEEE80211_BAND_2GHZ]; sband->channels = channels; /* OFDM & CCK */ sband->bitrates = rates; sband->n_bitrates = IWL_RATE_COUNT_LEGACY; if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE) iwl_init_ht_hw_capab(priv, &sband->ht_cap, IEEE80211_BAND_2GHZ); priv->ieee_channels = channels; priv->ieee_rates = rates; for (i = 0; i < priv->channel_count; i++) { ch = &priv->channel_info[i]; /* FIXME: might be removed if scan is OK */ if (!is_channel_valid(ch)) continue; sband = &priv->bands[ch->band]; geo_ch = &sband->channels[sband->n_channels++]; geo_ch->center_freq = ieee80211_channel_to_frequency(ch->channel, ch->band); geo_ch->max_power = ch->max_power_avg; geo_ch->max_antenna_gain = 0xff; geo_ch->hw_value = ch->channel; if (is_channel_valid(ch)) { if (!(ch->flags & EEPROM_CHANNEL_IBSS)) geo_ch->flags |= IEEE80211_CHAN_NO_IBSS; if (!(ch->flags & EEPROM_CHANNEL_ACTIVE)) geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN; if (ch->flags & EEPROM_CHANNEL_RADAR) geo_ch->flags |= IEEE80211_CHAN_RADAR; geo_ch->flags |= ch->ht40_extension_channel; if (ch->max_power_avg > max_tx_power) max_tx_power = ch->max_power_avg; } else { geo_ch->flags |= IEEE80211_CHAN_DISABLED; } IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n", ch->channel, geo_ch->center_freq, is_channel_a_band(ch) ? "5.2" : "2.4", geo_ch->flags & IEEE80211_CHAN_DISABLED ? "restricted" : "valid", geo_ch->flags); } priv->tx_power_device_lmt = max_tx_power; priv->tx_power_user_lmt = max_tx_power; priv->tx_power_next = max_tx_power; if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) && priv->hw_params.sku & EEPROM_SKU_CAP_BAND_52GHZ) { IWL_INFO(priv, "Incorrectly detected BG card as ABG. " "Please send your %s to maintainer.\n", priv->trans->hw_id_str); priv->hw_params.sku &= ~EEPROM_SKU_CAP_BAND_52GHZ; } IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n", priv->bands[IEEE80211_BAND_2GHZ].n_channels, priv->bands[IEEE80211_BAND_5GHZ].n_channels); set_bit(STATUS_GEO_CONFIGURED, &priv->status); return 0; } /* * iwl_free_geos - undo allocations in iwl_init_geos */ static void iwl_free_geos(struct iwl_priv *priv) { kfree(priv->ieee_channels); kfree(priv->ieee_rates); clear_bit(STATUS_GEO_CONFIGURED, &priv->status); } int iwl_init_drv(struct iwl_priv *priv) { int ret; spin_lock_init(&priv->sta_lock); mutex_init(&priv->mutex); INIT_LIST_HEAD(&priv->calib_results); priv->ieee_channels = NULL; priv->ieee_rates = NULL; priv->band = IEEE80211_BAND_2GHZ; priv->plcp_delta_threshold = priv->cfg->base_params->plcp_delta_threshold; priv->iw_mode = NL80211_IFTYPE_STATION; priv->current_ht_config.smps = IEEE80211_SMPS_STATIC; priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF; priv->agg_tids_count = 0; priv->ucode_owner = IWL_OWNERSHIP_DRIVER; priv->rx_statistics_jiffies = jiffies; /* Choose which receivers/antennas to use */ iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]); iwl_init_scan_params(priv); /* init bt coex */ if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist) { priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT; priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT; priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK; priv->bt_on_thresh = BT_ON_THRESHOLD_DEF; priv->bt_duration = BT_DURATION_LIMIT_DEF; priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF; } ret = iwl_init_channel_map(priv); if (ret) { IWL_ERR(priv, "initializing regulatory failed: %d\n", ret); goto err; } ret = iwl_init_geos(priv); if (ret) { IWL_ERR(priv, "initializing geos failed: %d\n", ret); goto err_free_channel_map; } iwl_init_hw_rates(priv->ieee_rates); return 0; err_free_channel_map: iwl_free_channel_map(priv); err: return ret; } void iwl_uninit_drv(struct iwl_priv *priv) { iwl_free_geos(priv); iwl_free_channel_map(priv); kfree(priv->scan_cmd); kfree(priv->beacon_cmd); kfree(rcu_dereference_raw(priv->noa_data)); iwl_calib_free_results(priv); #ifdef CONFIG_IWLWIFI_DEBUGFS kfree(priv->wowlan_sram); #endif } void iwl_set_hw_params(struct iwl_priv *priv) { if (priv->cfg->ht_params) priv->hw_params.use_rts_for_aggregation = priv->cfg->ht_params->use_rts_for_aggregation; if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL) priv->hw_params.sku &= ~EEPROM_SKU_CAP_11N_ENABLE; /* Device-specific setup */ priv->lib->set_hw_params(priv); } void iwl_debug_config(struct iwl_priv *priv) { dev_printk(KERN_INFO, priv->trans->dev, "CONFIG_IWLWIFI_DEBUG " #ifdef CONFIG_IWLWIFI_DEBUG "enabled\n"); #else "disabled\n"); #endif dev_printk(KERN_INFO, priv->trans->dev, "CONFIG_IWLWIFI_DEBUGFS " #ifdef CONFIG_IWLWIFI_DEBUGFS "enabled\n"); #else "disabled\n"); #endif dev_printk(KERN_INFO, priv->trans->dev, "CONFIG_IWLWIFI_DEVICE_TRACING " #ifdef CONFIG_IWLWIFI_DEVICE_TRACING "enabled\n"); #else "disabled\n"); #endif dev_printk(KERN_INFO, priv->trans->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE " #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE "enabled\n"); #else "disabled\n"); #endif dev_printk(KERN_INFO, priv->trans->dev, "CONFIG_IWLWIFI_P2P " #ifdef CONFIG_IWLWIFI_P2P "enabled\n"); #else "disabled\n"); #endif } static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, const struct iwl_fw *fw) { struct iwl_priv *priv; struct ieee80211_hw *hw; struct iwl_op_mode *op_mode; u16 num_mac; u32 ucode_flags; struct iwl_trans_config trans_cfg; static const u8 no_reclaim_cmds[] = { REPLY_RX_PHY_CMD, REPLY_RX, REPLY_RX_MPDU_CMD, REPLY_COMPRESSED_BA, STATISTICS_NOTIFICATION, REPLY_TX, }; int i; /************************ * 1. Allocating HW data ************************/ hw = iwl_alloc_all(); if (!hw) { pr_err("%s: Cannot allocate network device\n", cfg->name); goto out; } op_mode = hw->priv; op_mode->ops = &iwl_dvm_ops; priv = IWL_OP_MODE_GET_DVM(op_mode); priv->trans = trans; priv->dev = trans->dev; priv->cfg = cfg; priv->fw = fw; switch (priv->cfg->device_family) { case IWL_DEVICE_FAMILY_1000: case IWL_DEVICE_FAMILY_100: priv->lib = &iwl1000_lib; break; case IWL_DEVICE_FAMILY_2000: case IWL_DEVICE_FAMILY_105: priv->lib = &iwl2000_lib; break; case IWL_DEVICE_FAMILY_2030: case IWL_DEVICE_FAMILY_135: priv->lib = &iwl2030_lib; break; case IWL_DEVICE_FAMILY_5000: priv->lib = &iwl5000_lib; break; case IWL_DEVICE_FAMILY_5150: priv->lib = &iwl5150_lib; break; case IWL_DEVICE_FAMILY_6000: case IWL_DEVICE_FAMILY_6005: case IWL_DEVICE_FAMILY_6000i: case IWL_DEVICE_FAMILY_6050: case IWL_DEVICE_FAMILY_6150: priv->lib = &iwl6000_lib; break; case IWL_DEVICE_FAMILY_6030: priv->lib = &iwl6030_lib; break; default: break; } if (WARN_ON(!priv->lib)) goto out_free_hw; /* * Populate the state variables that the transport layer needs * to know about. */ trans_cfg.op_mode = op_mode; trans_cfg.no_reclaim_cmds = no_reclaim_cmds; trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; if (!iwlwifi_mod_params.wd_disable) trans_cfg.queue_watchdog_timeout = priv->cfg->base_params->wd_timeout; else trans_cfg.queue_watchdog_timeout = IWL_WATCHHDOG_DISABLED; trans_cfg.command_names = iwl_dvm_cmd_strings; ucode_flags = fw->ucode_capa.flags; #ifndef CONFIG_IWLWIFI_P2P ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P; #endif if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) { priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN; trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM; trans_cfg.queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo; trans_cfg.n_queue_to_fifo = ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo); } else { priv->sta_key_max_num = STA_KEY_MAX_NUM; trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo; trans_cfg.n_queue_to_fifo = ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo); } /* Configure transport layer */ iwl_trans_configure(priv->trans, &trans_cfg); /* At this point both hw and priv are allocated. */ SET_IEEE80211_DEV(priv->hw, priv->trans->dev); /* show what debugging capabilities we have */ iwl_debug_config(priv); IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n"); /* is antenna coupling more than 35dB ? */ priv->bt_ant_couple_ok = (iwlwifi_mod_params.ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ? true : false; /* enable/disable bt channel inhibition */ priv->bt_ch_announce = iwlwifi_mod_params.bt_ch_announce; IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n", (priv->bt_ch_announce) ? "On" : "Off"); /* these spin locks will be used in apm_ops.init and EEPROM access * we should init now */ spin_lock_init(&priv->trans->reg_lock); spin_lock_init(&priv->statistics.lock); /*********************** * 2. Read REV register ***********************/ IWL_INFO(priv, "Detected %s, REV=0x%X\n", priv->cfg->name, priv->trans->hw_rev); if (iwl_trans_start_hw(priv->trans)) goto out_free_hw; /* Read the EEPROM */ if (iwl_eeprom_init(priv, priv->trans->hw_rev)) { IWL_ERR(priv, "Unable to init EEPROM\n"); goto out_free_hw; } /* Reset chip to save power until we load uCode during "up". */ iwl_trans_stop_hw(priv->trans, false); if (iwl_eeprom_check_version(priv)) goto out_free_eeprom; if (iwl_eeprom_init_hw_params(priv)) goto out_free_eeprom; /* extract MAC Address */ iwl_eeprom_get_mac(priv, priv->addresses[0].addr); IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr); priv->hw->wiphy->addresses = priv->addresses; priv->hw->wiphy->n_addresses = 1; num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS); if (num_mac > 1) { memcpy(priv->addresses[1].addr, priv->addresses[0].addr, ETH_ALEN); priv->addresses[1].addr[5]++; priv->hw->wiphy->n_addresses++; } /************************ * 4. Setup HW constants ************************/ iwl_set_hw_params(priv); if (!(priv->hw_params.sku & EEPROM_SKU_CAP_IPAN_ENABLE)) { IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN"); ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN; /* * if not PAN, then don't support P2P -- might be a uCode * packaging bug or due to the eeprom check above */ ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P; priv->sta_key_max_num = STA_KEY_MAX_NUM; trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo; trans_cfg.n_queue_to_fifo = ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo); /* Configure transport layer again*/ iwl_trans_configure(priv->trans, &trans_cfg); } /******************* * 5. Setup priv *******************/ for (i = 0; i < IWL_MAX_HW_QUEUES; i++) { priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE; if (i < IWLAGN_FIRST_AMPDU_QUEUE && i != IWL_DEFAULT_CMD_QUEUE_NUM && i != IWL_IPAN_CMD_QUEUE_NUM) priv->queue_to_mac80211[i] = i; atomic_set(&priv->queue_stop_count[i], 0); } WARN_ON(trans_cfg.queue_to_fifo[trans_cfg.cmd_queue] != IWLAGN_CMD_FIFO_NUM); if (iwl_init_drv(priv)) goto out_free_eeprom; /* At this point both hw and priv are initialized. */ /******************** * 6. Setup services ********************/ iwl_setup_deferred_work(priv); iwl_setup_rx_handlers(priv); iwl_testmode_init(priv); iwl_power_initialize(priv); iwl_tt_initialize(priv); snprintf(priv->hw->wiphy->fw_version, sizeof(priv->hw->wiphy->fw_version), "%s", fw->fw_version); priv->new_scan_threshold_behaviour = !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN); priv->phy_calib_chain_noise_reset_cmd = fw->ucode_capa.standard_phy_calibration_size; priv->phy_calib_chain_noise_gain_cmd = fw->ucode_capa.standard_phy_calibration_size + 1; /* initialize all valid contexts */ iwl_init_context(priv, ucode_flags); /************************************************** * This is still part of probe() in a sense... * * 7. Setup and register with mac80211 and debugfs **************************************************/ if (iwlagn_mac_setup_register(priv, &fw->ucode_capa)) goto out_destroy_workqueue; if (iwl_dbgfs_register(priv, DRV_NAME)) IWL_ERR(priv, "failed to create debugfs files. Ignoring error\n"); return op_mode; out_destroy_workqueue: destroy_workqueue(priv->workqueue); priv->workqueue = NULL; iwl_uninit_drv(priv); out_free_eeprom: iwl_eeprom_free(priv); out_free_hw: ieee80211_free_hw(priv->hw); out: op_mode = NULL; return op_mode; } void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode) { struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n"); iwl_dbgfs_unregister(priv); iwl_testmode_cleanup(priv); iwlagn_mac_unregister(priv); iwl_tt_exit(priv); /*This will stop the queues, move the device to low power state */ priv->ucode_loaded = false; iwl_trans_stop_device(priv->trans); iwl_eeprom_free(priv); /*netif_stop_queue(dev); */ flush_workqueue(priv->workqueue); /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes * priv->workqueue... so we can't take down the workqueue * until now... */ destroy_workqueue(priv->workqueue); priv->workqueue = NULL; iwl_uninit_drv(priv); dev_kfree_skb(priv->beacon_skb); iwl_trans_stop_hw(priv->trans, true); ieee80211_free_hw(priv->hw); } static const char * const desc_lookup_text[] = { "OK", "FAIL", "BAD_PARAM", "BAD_CHECKSUM", "NMI_INTERRUPT_WDG", "SYSASSERT", "FATAL_ERROR", "BAD_COMMAND", "HW_ERROR_TUNE_LOCK", "HW_ERROR_TEMPERATURE", "ILLEGAL_CHAN_FREQ", "VCC_NOT_STABLE", "FH_ERROR", "NMI_INTERRUPT_HOST", "NMI_INTERRUPT_ACTION_PT", "NMI_INTERRUPT_UNKNOWN", "UCODE_VERSION_MISMATCH", "HW_ERROR_ABS_LOCK", "HW_ERROR_CAL_LOCK_FAIL", "NMI_INTERRUPT_INST_ACTION_PT", "NMI_INTERRUPT_DATA_ACTION_PT", "NMI_TRM_HW_ER", "NMI_INTERRUPT_TRM", "NMI_INTERRUPT_BREAK_POINT", "DEBUG_0", "DEBUG_1", "DEBUG_2", "DEBUG_3", }; static struct { char *name; u8 num; } advanced_lookup[] = { { "NMI_INTERRUPT_WDG", 0x34 }, { "SYSASSERT", 0x35 }, { "UCODE_VERSION_MISMATCH", 0x37 }, { "BAD_COMMAND", 0x38 }, { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, { "FATAL_ERROR", 0x3D }, { "NMI_TRM_HW_ERR", 0x46 }, { "NMI_INTERRUPT_TRM", 0x4C }, { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, { "NMI_INTERRUPT_HOST", 0x66 }, { "NMI_INTERRUPT_ACTION_PT", 0x7C }, { "NMI_INTERRUPT_UNKNOWN", 0x84 }, { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, { "ADVANCED_SYSASSERT", 0 }, }; static const char *desc_lookup(u32 num) { int i; int max = ARRAY_SIZE(desc_lookup_text); if (num < max) return desc_lookup_text[num]; max = ARRAY_SIZE(advanced_lookup) - 1; for (i = 0; i < max; i++) { if (advanced_lookup[i].num == num) break; } return advanced_lookup[i].name; } #define ERROR_START_OFFSET (1 * sizeof(u32)) #define ERROR_ELEM_SIZE (7 * sizeof(u32)) static void iwl_dump_nic_error_log(struct iwl_priv *priv) { struct iwl_trans *trans = priv->trans; u32 base; struct iwl_error_event_table table; base = priv->device_pointers.error_event_table; if (priv->cur_ucode == IWL_UCODE_INIT) { if (!base) base = priv->fw->init_errlog_ptr; } else { if (!base) base = priv->fw->inst_errlog_ptr; } if (!iwlagn_hw_valid_rtc_data_addr(base)) { IWL_ERR(priv, "Not valid error log pointer 0x%08X for %s uCode\n", base, (priv->cur_ucode == IWL_UCODE_INIT) ? "Init" : "RT"); return; } /*TODO: Update dbgfs with ISR error stats obtained below */ iwl_read_targ_mem_words(trans, base, &table, sizeof(table)); if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { IWL_ERR(trans, "Start IWL Error Log Dump:\n"); IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", priv->status, table.valid); } trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low, table.data1, table.data2, table.line, table.blink1, table.blink2, table.ilink1, table.ilink2, table.bcon_time, table.gp1, table.gp2, table.gp3, table.ucode_ver, table.hw_ver, table.brd_ver); IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id, desc_lookup(table.error_id)); IWL_ERR(priv, "0x%08X | uPc\n", table.pc); IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1); IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2); IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1); IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2); IWL_ERR(priv, "0x%08X | data1\n", table.data1); IWL_ERR(priv, "0x%08X | data2\n", table.data2); IWL_ERR(priv, "0x%08X | line\n", table.line); IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time); IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low); IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi); IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1); IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2); IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3); IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver); IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver); IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver); IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd); IWL_ERR(priv, "0x%08X | isr0\n", table.isr0); IWL_ERR(priv, "0x%08X | isr1\n", table.isr1); IWL_ERR(priv, "0x%08X | isr2\n", table.isr2); IWL_ERR(priv, "0x%08X | isr3\n", table.isr3); IWL_ERR(priv, "0x%08X | isr4\n", table.isr4); IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref); IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event); IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control); IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration); IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid); IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match); IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel); IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp); IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler); } #define EVENT_START_OFFSET (4 * sizeof(u32)) /** * iwl_print_event_log - Dump error event log to syslog * */ static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx, u32 num_events, u32 mode, int pos, char **buf, size_t bufsz) { u32 i; u32 base; /* SRAM byte address of event log header */ u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */ u32 ptr; /* SRAM byte address of log data */ u32 ev, time, data; /* event log data */ unsigned long reg_flags; struct iwl_trans *trans = priv->trans; if (num_events == 0) return pos; base = priv->device_pointers.log_event_table; if (priv->cur_ucode == IWL_UCODE_INIT) { if (!base) base = priv->fw->init_evtlog_ptr; } else { if (!base) base = priv->fw->inst_evtlog_ptr; } if (mode == 0) event_size = 2 * sizeof(u32); else event_size = 3 * sizeof(u32); ptr = base + EVENT_START_OFFSET + (start_idx * event_size); /* Make sure device is powered up for SRAM reads */ spin_lock_irqsave(&trans->reg_lock, reg_flags); if (unlikely(!iwl_grab_nic_access(trans))) goto out_unlock; /* Set starting address; reads will auto-increment */ iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr); /* "time" is actually "data" for mode 0 (no timestamp). * place event id # at far right for easier visual parsing. */ for (i = 0; i < num_events; i++) { ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT); time = iwl_read32(trans, HBUS_TARG_MEM_RDAT); if (mode == 0) { /* data, ev */ if (bufsz) { pos += scnprintf(*buf + pos, bufsz - pos, "EVT_LOG:0x%08x:%04u\n", time, ev); } else { trace_iwlwifi_dev_ucode_event(trans->dev, 0, time, ev); IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev); } } else { data = iwl_read32(trans, HBUS_TARG_MEM_RDAT); if (bufsz) { pos += scnprintf(*buf + pos, bufsz - pos, "EVT_LOGT:%010u:0x%08x:%04u\n", time, data, ev); } else { IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n", time, data, ev); trace_iwlwifi_dev_ucode_event(trans->dev, time, data, ev); } } } /* Allow device to power down */ iwl_release_nic_access(trans); out_unlock: spin_unlock_irqrestore(&trans->reg_lock, reg_flags); return pos; } /** * iwl_print_last_event_logs - Dump the newest # of event log to syslog */ static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity, u32 num_wraps, u32 next_entry, u32 size, u32 mode, int pos, char **buf, size_t bufsz) { /* * display the newest DEFAULT_LOG_ENTRIES entries * i.e the entries just before the next ont that uCode would fill. */ if (num_wraps) { if (next_entry < size) { pos = iwl_print_event_log(priv, capacity - (size - next_entry), size - next_entry, mode, pos, buf, bufsz); pos = iwl_print_event_log(priv, 0, next_entry, mode, pos, buf, bufsz); } else pos = iwl_print_event_log(priv, next_entry - size, size, mode, pos, buf, bufsz); } else { if (next_entry < size) { pos = iwl_print_event_log(priv, 0, next_entry, mode, pos, buf, bufsz); } else { pos = iwl_print_event_log(priv, next_entry - size, size, mode, pos, buf, bufsz); } } return pos; } #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20) int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log, char **buf, bool display) { u32 base; /* SRAM byte address of event log header */ u32 capacity; /* event log capacity in # entries */ u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */ u32 num_wraps; /* # times uCode wrapped to top of log */ u32 next_entry; /* index of next entry to be written by uCode */ u32 size; /* # entries that we'll print */ u32 logsize; int pos = 0; size_t bufsz = 0; struct iwl_trans *trans = priv->trans; base = priv->device_pointers.log_event_table; if (priv->cur_ucode == IWL_UCODE_INIT) { logsize = priv->fw->init_evtlog_size; if (!base) base = priv->fw->init_evtlog_ptr; } else { logsize = priv->fw->inst_evtlog_size; if (!base) base = priv->fw->inst_evtlog_ptr; } if (!iwlagn_hw_valid_rtc_data_addr(base)) { IWL_ERR(priv, "Invalid event log pointer 0x%08X for %s uCode\n", base, (priv->cur_ucode == IWL_UCODE_INIT) ? "Init" : "RT"); return -EINVAL; } /* event log header */ capacity = iwl_read_targ_mem(trans, base); mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32))); num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32))); next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32))); if (capacity > logsize) { IWL_ERR(priv, "Log capacity %d is bogus, limit to %d " "entries\n", capacity, logsize); capacity = logsize; } if (next_entry > logsize) { IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n", next_entry, logsize); next_entry = logsize; } size = num_wraps ? capacity : next_entry; /* bail out if nothing in log */ if (size == 0) { IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n"); return pos; } #ifdef CONFIG_IWLWIFI_DEBUG if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log) size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES) ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size; #else size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES) ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size; #endif IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n", size); #ifdef CONFIG_IWLWIFI_DEBUG if (display) { if (full_log) bufsz = capacity * 48; else bufsz = size * 48; *buf = kmalloc(bufsz, GFP_KERNEL); if (!*buf) return -ENOMEM; } if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) { /* * if uCode has wrapped back to top of log, * start at the oldest entry, * i.e the next one that uCode would fill. */ if (num_wraps) pos = iwl_print_event_log(priv, next_entry, capacity - next_entry, mode, pos, buf, bufsz); /* (then/else) start at top of log */ pos = iwl_print_event_log(priv, 0, next_entry, mode, pos, buf, bufsz); } else pos = iwl_print_last_event_logs(priv, capacity, num_wraps, next_entry, size, mode, pos, buf, bufsz); #else pos = iwl_print_last_event_logs(priv, capacity, num_wraps, next_entry, size, mode, pos, buf, bufsz); #endif return pos; } static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand) { unsigned int reload_msec; unsigned long reload_jiffies; #ifdef CONFIG_IWLWIFI_DEBUG if (iwl_have_debug_level(IWL_DL_FW_ERRORS)) iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS); #endif /* uCode is no longer loaded. */ priv->ucode_loaded = false; /* Set the FW error flag -- cleared on iwl_down */ set_bit(STATUS_FW_ERROR, &priv->status); iwl_abort_notification_waits(&priv->notif_wait); /* Keep the restart process from trying to send host * commands by clearing the ready bit */ clear_bit(STATUS_READY, &priv->status); wake_up(&priv->trans->wait_command_queue); if (!ondemand) { /* * If firmware keep reloading, then it indicate something * serious wrong and firmware having problem to recover * from it. Instead of keep trying which will fill the syslog * and hang the system, let's just stop it */ reload_jiffies = jiffies; reload_msec = jiffies_to_msecs((long) reload_jiffies - (long) priv->reload_jiffies); priv->reload_jiffies = reload_jiffies; if (reload_msec <= IWL_MIN_RELOAD_DURATION) { priv->reload_count++; if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) { IWL_ERR(priv, "BUG_ON, Stop restarting\n"); return; } } else priv->reload_count = 0; } if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) { if (iwlwifi_mod_params.restart_fw) { IWL_DEBUG_FW_ERRORS(priv, "Restarting adapter due to uCode error.\n"); queue_work(priv->workqueue, &priv->restart); } else IWL_DEBUG_FW_ERRORS(priv, "Detected FW error, but not restarting\n"); } } void iwl_nic_error(struct iwl_op_mode *op_mode) { struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); IWL_ERR(priv, "Loaded firmware version: %s\n", priv->fw->fw_version); iwl_dump_nic_error_log(priv); iwl_dump_nic_event_log(priv, false, NULL, false); iwlagn_fw_error(priv, false); } void iwl_cmd_queue_full(struct iwl_op_mode *op_mode) { struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); if (!iwl_check_for_ct_kill(priv)) { IWL_ERR(priv, "Restarting adapter queue is full\n"); iwlagn_fw_error(priv, false); } } void iwl_nic_config(struct iwl_op_mode *op_mode) { struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); priv->lib->nic_config(priv); } static void iwl_wimax_active(struct iwl_op_mode *op_mode) { struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); clear_bit(STATUS_READY, &priv->status); IWL_ERR(priv, "RF is used by WiMAX\n"); } void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) { struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); int mq = priv->queue_to_mac80211[queue]; if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) return; if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) { IWL_DEBUG_TX_QUEUES(priv, "queue %d (mac80211 %d) already stopped\n", queue, mq); return; } set_bit(mq, &priv->transport_queue_stop); ieee80211_stop_queue(priv->hw, mq); } void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) { struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); int mq = priv->queue_to_mac80211[queue]; if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) return; if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) { IWL_DEBUG_TX_QUEUES(priv, "queue %d (mac80211 %d) already awake\n", queue, mq); return; } clear_bit(mq, &priv->transport_queue_stop); if (!priv->passive_no_rx) ieee80211_wake_queue(priv->hw, mq); } void iwlagn_lift_passive_no_rx(struct iwl_priv *priv) { int mq; if (!priv->passive_no_rx) return; for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) { if (!test_bit(mq, &priv->transport_queue_stop)) { IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d", mq); ieee80211_wake_queue(priv->hw, mq); } else { IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d", mq); } } priv->passive_no_rx = false; } void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) { struct ieee80211_tx_info *info; info = IEEE80211_SKB_CB(skb); kmem_cache_free(iwl_tx_cmd_pool, (info->driver_data[1])); dev_kfree_skb_any(skb); } void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) { struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); if (state) set_bit(STATUS_RF_KILL_HW, &priv->status); else clear_bit(STATUS_RF_KILL_HW, &priv->status); wiphy_rfkill_set_hw_state(priv->hw->wiphy, state); } const struct iwl_op_mode_ops iwl_dvm_ops = { .start = iwl_op_mode_dvm_start, .stop = iwl_op_mode_dvm_stop, .rx = iwl_rx_dispatch, .queue_full = iwl_stop_sw_queue, .queue_not_full = iwl_wake_sw_queue, .hw_rf_kill = iwl_set_hw_rfkill_state, .free_skb = iwl_free_skb, .nic_error = iwl_nic_error, .cmd_queue_full = iwl_cmd_queue_full, .nic_config = iwl_nic_config, .wimax_active = iwl_wimax_active, }; /***************************************************************************** * * driver and module entry point * *****************************************************************************/ struct kmem_cache *iwl_tx_cmd_pool; static int __init iwl_init(void) { int ret; pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n"); pr_info(DRV_COPYRIGHT "\n"); iwl_tx_cmd_pool = kmem_cache_create("iwl_dev_cmd", sizeof(struct iwl_device_cmd), sizeof(void *), 0, NULL); if (!iwl_tx_cmd_pool) return -ENOMEM; ret = iwlagn_rate_control_register(); if (ret) { pr_err("Unable to register rate control algorithm: %d\n", ret); goto error_rc_register; } ret = iwl_pci_register_driver(); if (ret) goto error_pci_register; return ret; error_pci_register: iwlagn_rate_control_unregister(); error_rc_register: kmem_cache_destroy(iwl_tx_cmd_pool); return ret; } static void __exit iwl_exit(void) { iwl_pci_unregister_driver(); iwlagn_rate_control_unregister(); kmem_cache_destroy(iwl_tx_cmd_pool); } module_exit(iwl_exit); module_init(iwl_init);