| /****************************************************************************** |
| * |
| * 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 <ilw@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| *****************************************************************************/ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/delay.h> |
| #include <linux/sched.h> |
| #include <linux/skbuff.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/if_arp.h> |
| |
| #include <net/mac80211.h> |
| |
| #include <asm/div64.h> |
| |
| #include "iwl-eeprom-read.h" |
| #include "iwl-eeprom-parse.h" |
| #include "iwl-io.h" |
| #include "iwl-trans.h" |
| #include "iwl-op-mode.h" |
| #include "iwl-drv.h" |
| #include "iwl-modparams.h" |
| #include "iwl-prph.h" |
| |
| #include "dev.h" |
| #include "calib.h" |
| #include "agn.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"); |
| |
| static const struct iwl_op_mode_ops iwl_dvm_ops; |
| |
| 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->eeprom_data->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_bytes(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); |
| } |
| |
| /* |
| * queue/FIFO/AC mapping definitions |
| */ |
| |
| 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, |
| }; |
| |
| static 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) | BIT(NL80211_IFTYPE_MONITOR); |
| 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); |
| } |
| |
| static 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; |
| } |
| } |
| |
| static 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->eeprom_data->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. |
| */ |
| if (priv->ucode_loaded && priv->cur_ucode != IWL_UCODE_INIT) |
| 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); |
| |
| /* Set num_aux_in_flight must be done after the transport is stopped */ |
| atomic_set(&priv->num_aux_in_flight, 0); |
| |
| /* 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_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) |
| { |
| 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); |
| |
| 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); |
| if (priv->mac80211_registered) |
| ieee80211_restart_hw(priv->hw); |
| else |
| IWL_ERR(priv, |
| "Cannot request restart before registrating with mac80211"); |
| } 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 |
| * |
| *****************************************************************************/ |
| |
| static 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 int iwl_init_drv(struct iwl_priv *priv) |
| { |
| spin_lock_init(&priv->sta_lock); |
| |
| mutex_init(&priv->mutex); |
| |
| INIT_LIST_HEAD(&priv->calib_results); |
| |
| 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; |
| } |
| |
| return 0; |
| } |
| |
| static void iwl_uninit_drv(struct iwl_priv *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 |
| } |
| |
| static 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; |
| |
| /* Device-specific setup */ |
| priv->lib->set_hw_params(priv); |
| } |
| |
| |
| |
| /* show what optional capabilities we have */ |
| static void iwl_option_config(struct iwl_priv *priv) |
| { |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n"); |
| #else |
| IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n"); |
| #endif |
| |
| #ifdef CONFIG_IWLWIFI_DEBUGFS |
| IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n"); |
| #else |
| IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n"); |
| #endif |
| |
| #ifdef CONFIG_IWLWIFI_DEVICE_TRACING |
| IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n"); |
| #else |
| IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n"); |
| #endif |
| |
| #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE |
| IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE enabled\n"); |
| #else |
| IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE disabled\n"); |
| #endif |
| |
| #ifdef CONFIG_IWLWIFI_P2P |
| IWL_INFO(priv, "CONFIG_IWLWIFI_P2P enabled\n"); |
| #else |
| IWL_INFO(priv, "CONFIG_IWLWIFI_P2P disabled\n"); |
| #endif |
| } |
| |
| static int iwl_eeprom_init_hw_params(struct iwl_priv *priv) |
| { |
| priv->eeprom_data->sku = priv->eeprom_data->sku; |
| |
| if (priv->eeprom_data->sku & EEPROM_SKU_CAP_11N_ENABLE && |
| !priv->cfg->ht_params) { |
| IWL_ERR(priv, "Invalid 11n configuration\n"); |
| return -EINVAL; |
| } |
| |
| if (!priv->eeprom_data->sku) { |
| IWL_ERR(priv, "Invalid device sku\n"); |
| return -EINVAL; |
| } |
| |
| IWL_INFO(priv, "Device SKU: 0x%X\n", priv->eeprom_data->sku); |
| |
| priv->hw_params.tx_chains_num = |
| num_of_ant(priv->eeprom_data->valid_tx_ant); |
| if (priv->cfg->rx_with_siso_diversity) |
| priv->hw_params.rx_chains_num = 1; |
| else |
| priv->hw_params.rx_chains_num = |
| num_of_ant(priv->eeprom_data->valid_rx_ant); |
| |
| IWL_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n", |
| priv->eeprom_data->valid_tx_ant, |
| priv->eeprom_data->valid_rx_ant); |
| |
| return 0; |
| } |
| |
| 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 dentry *dbgfs_dir) |
| { |
| 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_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_WATCHDOG_DISABLED; |
| trans_cfg.command_names = iwl_dvm_cmd_strings; |
| trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM; |
| |
| WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE < |
| priv->cfg->base_params->num_of_queues); |
| |
| 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; |
| } else { |
| priv->sta_key_max_num = STA_KEY_MAX_NUM; |
| trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM; |
| } |
| |
| /* Configure transport layer */ |
| iwl_trans_configure(priv->trans, &trans_cfg); |
| |
| trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; |
| trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); |
| |
| /* At this point both hw and priv are allocated. */ |
| |
| SET_IEEE80211_DEV(priv->hw, priv->trans->dev); |
| |
| iwl_option_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->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_read_eeprom(priv->trans, &priv->eeprom_blob, |
| &priv->eeprom_blob_size)) { |
| 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); |
| |
| priv->eeprom_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg, |
| priv->eeprom_blob, |
| priv->eeprom_blob_size); |
| if (!priv->eeprom_data) |
| goto out_free_eeprom_blob; |
| |
| if (iwl_eeprom_check_version(priv->eeprom_data, priv->trans)) |
| goto out_free_eeprom; |
| |
| if (iwl_eeprom_init_hw_params(priv)) |
| goto out_free_eeprom; |
| |
| /* extract MAC Address */ |
| memcpy(priv->addresses[0].addr, priv->eeprom_data->hw_addr, ETH_ALEN); |
| 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 = priv->eeprom_data->n_hw_addrs; |
| 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->eeprom_data->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; |
| |
| /* 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); |
| } |
| |
| 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, dbgfs_dir)) |
| goto out_mac80211_unregister; |
| |
| return op_mode; |
| |
| out_mac80211_unregister: |
| iwlagn_mac_unregister(priv); |
| out_destroy_workqueue: |
| iwl_tt_exit(priv); |
| iwl_testmode_free(priv); |
| iwl_cancel_deferred_work(priv); |
| destroy_workqueue(priv->workqueue); |
| priv->workqueue = NULL; |
| iwl_uninit_drv(priv); |
| out_free_eeprom_blob: |
| kfree(priv->eeprom_blob); |
| out_free_eeprom: |
| iwl_free_eeprom_data(priv->eeprom_data); |
| out_free_hw: |
| ieee80211_free_hw(priv->hw); |
| out: |
| op_mode = NULL; |
| return op_mode; |
| } |
| |
| static 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_testmode_free(priv); |
| iwlagn_mac_unregister(priv); |
| |
| iwl_tt_exit(priv); |
| |
| kfree(priv->eeprom_blob); |
| iwl_free_eeprom_data(priv->eeprom_data); |
| |
| /*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_bytes(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); |
| |
| 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"); |
| } |
| } |
| |
| static 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); |
| } |
| |
| static 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); |
| } |
| } |
| |
| #define EEPROM_RF_CONFIG_TYPE_MAX 0x3 |
| |
| static void iwl_nic_config(struct iwl_op_mode *op_mode) |
| { |
| struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); |
| u16 radio_cfg = priv->eeprom_data->radio_cfg; |
| |
| /* SKU Control */ |
| iwl_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, |
| CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | |
| CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP, |
| (CSR_HW_REV_STEP(priv->trans->hw_rev) << |
| CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) | |
| (CSR_HW_REV_DASH(priv->trans->hw_rev) << |
| CSR_HW_IF_CONFIG_REG_POS_MAC_DASH)); |
| |
| /* write radio config values to register */ |
| if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <= EEPROM_RF_CONFIG_TYPE_MAX) { |
| u32 reg_val = |
| EEPROM_RF_CFG_TYPE_MSK(radio_cfg) << |
| CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE | |
| EEPROM_RF_CFG_STEP_MSK(radio_cfg) << |
| CSR_HW_IF_CONFIG_REG_POS_PHY_STEP | |
| EEPROM_RF_CFG_DASH_MSK(radio_cfg) << |
| CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; |
| |
| iwl_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG, |
| CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | |
| CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | |
| CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH, reg_val); |
| |
| IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n", |
| EEPROM_RF_CFG_TYPE_MSK(radio_cfg), |
| EEPROM_RF_CFG_STEP_MSK(radio_cfg), |
| EEPROM_RF_CFG_DASH_MSK(radio_cfg)); |
| } else { |
| WARN_ON(1); |
| } |
| |
| /* set CSR_HW_CONFIG_REG for uCode use */ |
| iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG, |
| CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | |
| CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); |
| |
| /* W/A : NIC is stuck in a reset state after Early PCIe power off |
| * (PCIe power is lost before PERST# is asserted), |
| * causing ME FW to lose ownership and not being able to obtain it back. |
| */ |
| iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG, |
| APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, |
| ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); |
| |
| if (priv->lib->nic_config) |
| 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"); |
| } |
| |
| static 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); |
| } |
| |
| static 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; |
| } |
| |
| static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) |
| { |
| struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); |
| struct ieee80211_tx_info *info; |
| |
| info = IEEE80211_SKB_CB(skb); |
| iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); |
| dev_kfree_skb_any(skb); |
| } |
| |
| static 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); |
| } |
| |
| static 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 |
| * |
| *****************************************************************************/ |
| static int __init iwl_init(void) |
| { |
| |
| int ret; |
| |
| ret = iwlagn_rate_control_register(); |
| if (ret) { |
| pr_err("Unable to register rate control algorithm: %d\n", ret); |
| return ret; |
| } |
| |
| ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops); |
| if (ret) { |
| pr_err("Unable to register op_mode: %d\n", ret); |
| iwlagn_rate_control_unregister(); |
| } |
| |
| return ret; |
| } |
| module_init(iwl_init); |
| |
| static void __exit iwl_exit(void) |
| { |
| iwl_opmode_deregister("iwldvm"); |
| iwlagn_rate_control_unregister(); |
| } |
| module_exit(iwl_exit); |