diff options
author | 2021-08-02 17:09:39 +0300 | |
---|---|---|
committer | 2021-08-26 23:32:21 +0300 | |
commit | b8221b0f750a05a7ae9cbca84932e2a36a3ee658 (patch) | |
tree | d59f06abdf5198c716847933cd8c152663d00fda | |
parent | iwlwifi: pcie: free RBs during configure (diff) | |
download | linux-b8221b0f750a05a7ae9cbca84932e2a36a3ee658.tar.gz linux-b8221b0f750a05a7ae9cbca84932e2a36a3ee658.tar.bz2 linux-b8221b0f750a05a7ae9cbca84932e2a36a3ee658.zip |
iwlwifi: prepare for synchronous error dumps
In some cases it may be necessary to synchronously create
a firmware error report, add the necessary infrastructure
for this.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802170640.481b6642f0fc.I7c9c958408a285e3d19aceed2a5a3341cfc08382@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/dvm/main.c | 4 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 97 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/dbg.h | 7 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c | 25 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h | 24 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-io.c | 4 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h | 8 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-trans.h | 4 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 16 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 2 |
10 files changed, 113 insertions, 78 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/dvm/main.c b/drivers/net/wireless/intel/iwlwifi/dvm/main.c index c01523f64bfc..cc7b69fd14d3 100644 --- a/drivers/net/wireless/intel/iwlwifi/dvm/main.c +++ b/drivers/net/wireless/intel/iwlwifi/dvm/main.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /****************************************************************************** * - * Copyright(c) 2003 - 2014, 2018 - 2020 Intel Corporation. All rights reserved. + * Copyright(c) 2003 - 2014, 2018 - 2021 Intel Corporation. All rights reserved. * Copyright(c) 2015 Intel Deutschland GmbH * * Portions of this file are derived from the ipw3945 project, as well @@ -1950,7 +1950,7 @@ static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand) } } -static void iwl_nic_error(struct iwl_op_mode *op_mode) +static void iwl_nic_error(struct iwl_op_mode *op_mode, bool sync) { struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode); diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c index df7c55e06f54..70e0a3089876 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c @@ -2530,51 +2530,6 @@ int iwl_fw_dbg_collect(struct iwl_fw_runtime *fwrt, } IWL_EXPORT_SYMBOL(iwl_fw_dbg_collect); -int iwl_fw_dbg_ini_collect(struct iwl_fw_runtime *fwrt, - struct iwl_fwrt_dump_data *dump_data) -{ - struct iwl_fw_ini_trigger_tlv *trig = dump_data->trig; - enum iwl_fw_ini_time_point tp_id = le32_to_cpu(trig->time_point); - u32 occur, delay; - unsigned long idx; - - if (!iwl_fw_ini_trigger_on(fwrt, trig)) { - IWL_WARN(fwrt, "WRT: Trigger %d is not active, aborting dump\n", - tp_id); - return -EINVAL; - } - - delay = le32_to_cpu(trig->dump_delay); - occur = le32_to_cpu(trig->occurrences); - if (!occur) - return 0; - - trig->occurrences = cpu_to_le32(--occur); - - /* Check there is an available worker. - * ffz return value is undefined if no zero exists, - * so check against ~0UL first. - */ - if (fwrt->dump.active_wks == ~0UL) - return -EBUSY; - - idx = ffz(fwrt->dump.active_wks); - - if (idx >= IWL_FW_RUNTIME_DUMP_WK_NUM || - test_and_set_bit(fwrt->dump.wks[idx].idx, &fwrt->dump.active_wks)) - return -EBUSY; - - fwrt->dump.wks[idx].dump_data = *dump_data; - - IWL_WARN(fwrt, - "WRT: Collecting data: ini trigger %d fired (delay=%dms).\n", - tp_id, (u32)(delay / USEC_PER_MSEC)); - - schedule_delayed_work(&fwrt->dump.wks[idx].wk, usecs_to_jiffies(delay)); - - return 0; -} - int iwl_fw_dbg_collect_trig(struct iwl_fw_runtime *fwrt, struct iwl_fw_dbg_trigger_tlv *trigger, const char *fmt, ...) @@ -2703,6 +2658,58 @@ out: clear_bit(wk_idx, &fwrt->dump.active_wks); } +int iwl_fw_dbg_ini_collect(struct iwl_fw_runtime *fwrt, + struct iwl_fwrt_dump_data *dump_data, + bool sync) +{ + struct iwl_fw_ini_trigger_tlv *trig = dump_data->trig; + enum iwl_fw_ini_time_point tp_id = le32_to_cpu(trig->time_point); + u32 occur, delay; + unsigned long idx; + + if (!iwl_fw_ini_trigger_on(fwrt, trig)) { + IWL_WARN(fwrt, "WRT: Trigger %d is not active, aborting dump\n", + tp_id); + return -EINVAL; + } + + delay = le32_to_cpu(trig->dump_delay); + occur = le32_to_cpu(trig->occurrences); + if (!occur) + return 0; + + trig->occurrences = cpu_to_le32(--occur); + + /* Check there is an available worker. + * ffz return value is undefined if no zero exists, + * so check against ~0UL first. + */ + if (fwrt->dump.active_wks == ~0UL) + return -EBUSY; + + idx = ffz(fwrt->dump.active_wks); + + if (idx >= IWL_FW_RUNTIME_DUMP_WK_NUM || + test_and_set_bit(fwrt->dump.wks[idx].idx, &fwrt->dump.active_wks)) + return -EBUSY; + + fwrt->dump.wks[idx].dump_data = *dump_data; + + if (sync) + delay = 0; + + IWL_WARN(fwrt, + "WRT: Collecting data: ini trigger %d fired (delay=%dms).\n", + tp_id, (u32)(delay / USEC_PER_MSEC)); + + schedule_delayed_work(&fwrt->dump.wks[idx].wk, usecs_to_jiffies(delay)); + + if (sync) + iwl_fw_dbg_collect_sync(fwrt, idx); + + return 0; +} + void iwl_fw_error_dump_wk(struct work_struct *work) { struct iwl_fwrt_wk_data *wks = diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.h b/drivers/net/wireless/intel/iwlwifi/fw/dbg.h index c0e84ef84f5d..8c3c890066b0 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.h @@ -46,7 +46,8 @@ int iwl_fw_dbg_collect_desc(struct iwl_fw_runtime *fwrt, int iwl_fw_dbg_error_collect(struct iwl_fw_runtime *fwrt, enum iwl_fw_dbg_trigger trig_type); int iwl_fw_dbg_ini_collect(struct iwl_fw_runtime *fwrt, - struct iwl_fwrt_dump_data *dump_data); + struct iwl_fwrt_dump_data *dump_data, + bool sync); int iwl_fw_dbg_collect(struct iwl_fw_runtime *fwrt, enum iwl_fw_dbg_trigger trig, const char *str, size_t len, struct iwl_fw_dbg_trigger_tlv *trigger); @@ -284,7 +285,7 @@ static inline void iwl_fw_umac_set_alive_err_table(struct iwl_trans *trans, trans->dbg.umac_error_event_table = umac_error_event_table; } -static inline void iwl_fw_error_collect(struct iwl_fw_runtime *fwrt) +static inline void iwl_fw_error_collect(struct iwl_fw_runtime *fwrt, bool sync) { enum iwl_fw_ini_time_point tp_id; @@ -300,7 +301,7 @@ static inline void iwl_fw_error_collect(struct iwl_fw_runtime *fwrt) tp_id = IWL_FW_INI_TIME_POINT_FW_ASSERT; } - iwl_dbg_tlv_time_point(fwrt, tp_id, NULL); + _iwl_dbg_tlv_time_point(fwrt, tp_id, NULL, sync); } void iwl_fw_error_print_fseq_regs(struct iwl_fw_runtime *fwrt); diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c index 0ddd255a8cc1..cc78fd23c922 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c @@ -683,7 +683,7 @@ static void iwl_dbg_tlv_periodic_trig_handler(struct timer_list *t) }; int ret; - ret = iwl_fw_dbg_ini_collect(timer_node->fwrt, &dump_data); + ret = iwl_fw_dbg_ini_collect(timer_node->fwrt, &dump_data, false); if (!ret || ret == -EBUSY) { u32 occur = le32_to_cpu(dump_data.trig->occurrences); u32 collect_interval = le32_to_cpu(dump_data.trig->data[0]); @@ -927,7 +927,7 @@ static bool iwl_dbg_tlv_check_fw_pkt(struct iwl_fw_runtime *fwrt, } static int -iwl_dbg_tlv_tp_trigger(struct iwl_fw_runtime *fwrt, +iwl_dbg_tlv_tp_trigger(struct iwl_fw_runtime *fwrt, bool sync, struct list_head *active_trig_list, union iwl_dbg_tlv_tp_data *tp_data, bool (*data_check)(struct iwl_fw_runtime *fwrt, @@ -946,7 +946,7 @@ iwl_dbg_tlv_tp_trigger(struct iwl_fw_runtime *fwrt, int ret, i; if (!num_data) { - ret = iwl_fw_dbg_ini_collect(fwrt, &dump_data); + ret = iwl_fw_dbg_ini_collect(fwrt, &dump_data, sync); if (ret) return ret; } @@ -955,7 +955,7 @@ iwl_dbg_tlv_tp_trigger(struct iwl_fw_runtime *fwrt, if (!data_check || data_check(fwrt, &dump_data, tp_data, le32_to_cpu(dump_data.trig->data[i]))) { - ret = iwl_fw_dbg_ini_collect(fwrt, &dump_data); + ret = iwl_fw_dbg_ini_collect(fwrt, &dump_data, sync); if (ret) return ret; @@ -1043,9 +1043,10 @@ static void iwl_dbg_tlv_init_cfg(struct iwl_fw_runtime *fwrt) } } -void iwl_dbg_tlv_time_point(struct iwl_fw_runtime *fwrt, - enum iwl_fw_ini_time_point tp_id, - union iwl_dbg_tlv_tp_data *tp_data) +void _iwl_dbg_tlv_time_point(struct iwl_fw_runtime *fwrt, + enum iwl_fw_ini_time_point tp_id, + union iwl_dbg_tlv_tp_data *tp_data, + bool sync) { struct list_head *hcmd_list, *trig_list; @@ -1060,12 +1061,12 @@ void iwl_dbg_tlv_time_point(struct iwl_fw_runtime *fwrt, switch (tp_id) { case IWL_FW_INI_TIME_POINT_EARLY: iwl_dbg_tlv_init_cfg(fwrt); - iwl_dbg_tlv_tp_trigger(fwrt, trig_list, tp_data, NULL); + iwl_dbg_tlv_tp_trigger(fwrt, sync, trig_list, tp_data, NULL); break; case IWL_FW_INI_TIME_POINT_AFTER_ALIVE: iwl_dbg_tlv_apply_buffers(fwrt); iwl_dbg_tlv_send_hcmds(fwrt, hcmd_list); - iwl_dbg_tlv_tp_trigger(fwrt, trig_list, tp_data, NULL); + iwl_dbg_tlv_tp_trigger(fwrt, sync, trig_list, tp_data, NULL); break; case IWL_FW_INI_TIME_POINT_PERIODIC: iwl_dbg_tlv_set_periodic_trigs(fwrt); @@ -1075,13 +1076,13 @@ void iwl_dbg_tlv_time_point(struct iwl_fw_runtime *fwrt, case IWL_FW_INI_TIME_POINT_MISSED_BEACONS: case IWL_FW_INI_TIME_POINT_FW_DHC_NOTIFICATION: iwl_dbg_tlv_send_hcmds(fwrt, hcmd_list); - iwl_dbg_tlv_tp_trigger(fwrt, trig_list, tp_data, + iwl_dbg_tlv_tp_trigger(fwrt, sync, trig_list, tp_data, iwl_dbg_tlv_check_fw_pkt); break; default: iwl_dbg_tlv_send_hcmds(fwrt, hcmd_list); - iwl_dbg_tlv_tp_trigger(fwrt, trig_list, tp_data, NULL); + iwl_dbg_tlv_tp_trigger(fwrt, sync, trig_list, tp_data, NULL); break; } } -IWL_EXPORT_SYMBOL(iwl_dbg_tlv_time_point); +IWL_EXPORT_SYMBOL(_iwl_dbg_tlv_time_point); diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h index 92c720527946..c12b1fd3f479 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* - * Copyright (C) 2018-2020 Intel Corporation + * Copyright (C) 2018-2021 Intel Corporation */ #ifndef __iwl_dbg_tlv_h__ #define __iwl_dbg_tlv_h__ @@ -48,9 +48,25 @@ void iwl_dbg_tlv_free(struct iwl_trans *trans); void iwl_dbg_tlv_alloc(struct iwl_trans *trans, const struct iwl_ucode_tlv *tlv, bool ext); void iwl_dbg_tlv_init(struct iwl_trans *trans); -void iwl_dbg_tlv_time_point(struct iwl_fw_runtime *fwrt, - enum iwl_fw_ini_time_point tp_id, - union iwl_dbg_tlv_tp_data *tp_data); +void _iwl_dbg_tlv_time_point(struct iwl_fw_runtime *fwrt, + enum iwl_fw_ini_time_point tp_id, + union iwl_dbg_tlv_tp_data *tp_data, + bool sync); + +static inline void iwl_dbg_tlv_time_point(struct iwl_fw_runtime *fwrt, + enum iwl_fw_ini_time_point tp_id, + union iwl_dbg_tlv_tp_data *tp_data) +{ + _iwl_dbg_tlv_time_point(fwrt, tp_id, tp_data, false); +} + +static inline void iwl_dbg_tlv_time_point_sync(struct iwl_fw_runtime *fwrt, + enum iwl_fw_ini_time_point tp_id, + union iwl_dbg_tlv_tp_data *tp_data) +{ + _iwl_dbg_tlv_time_point(fwrt, tp_id, tp_data, true); +} + void iwl_dbg_tlv_del_timers(struct iwl_trans *trans); #endif /* __iwl_dbg_tlv_h__*/ diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-io.c b/drivers/net/wireless/intel/iwlwifi/iwl-io.c index 33d42e08d5b8..2a0be1fafdf9 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-io.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-io.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright (C) 2003-2014, 2018-2020 Intel Corporation + * Copyright (C) 2003-2014, 2018-2021 Intel Corporation * Copyright (C) 2015-2016 Intel Deutschland GmbH */ #include <linux/delay.h> @@ -468,5 +468,5 @@ void iwl_trans_sync_nmi_with_addr(struct iwl_trans *trans, u32 inta_addr, if (interrupts_enabled) iwl_trans_interrupts(trans, true); - iwl_trans_fw_error(trans); + iwl_trans_fw_error(trans, false); } diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h b/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h index cf9c64090014..af5f9b210f22 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-op-mode.h @@ -78,7 +78,7 @@ struct iwl_cfg; * there are Tx packets pending in the transport layer. * Must be atomic * @nic_error: error notification. Must be atomic and must be called with BH - * disabled. + * disabled, unless the sync parameter is true. * @cmd_queue_full: Called when the command queue gets full. Must be atomic and * called with BH disabled. * @nic_config: configure NIC, called before firmware is started. @@ -102,7 +102,7 @@ struct iwl_op_mode_ops { void (*queue_not_full)(struct iwl_op_mode *op_mode, int queue); bool (*hw_rf_kill)(struct iwl_op_mode *op_mode, bool state); void (*free_skb)(struct iwl_op_mode *op_mode, struct sk_buff *skb); - void (*nic_error)(struct iwl_op_mode *op_mode); + void (*nic_error)(struct iwl_op_mode *op_mode, bool sync); void (*cmd_queue_full)(struct iwl_op_mode *op_mode); void (*nic_config)(struct iwl_op_mode *op_mode); void (*wimax_active)(struct iwl_op_mode *op_mode); @@ -181,9 +181,9 @@ static inline void iwl_op_mode_free_skb(struct iwl_op_mode *op_mode, op_mode->ops->free_skb(op_mode, skb); } -static inline void iwl_op_mode_nic_error(struct iwl_op_mode *op_mode) +static inline void iwl_op_mode_nic_error(struct iwl_op_mode *op_mode, bool sync) { - op_mode->ops->nic_error(op_mode); + op_mode->ops->nic_error(op_mode, sync); } static inline void iwl_op_mode_cmd_queue_full(struct iwl_op_mode *op_mode) diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h index 0199d7a5a648..2cbc9ecd688b 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h @@ -1385,14 +1385,14 @@ iwl_trans_release_nic_access(struct iwl_trans *trans) __release(nic_access); } -static inline void iwl_trans_fw_error(struct iwl_trans *trans) +static inline void iwl_trans_fw_error(struct iwl_trans *trans, bool sync) { if (WARN_ON_ONCE(!trans->op_mode)) return; /* prevent double restarts due to the same erroneous FW */ if (!test_and_set_bit(STATUS_FW_ERROR, &trans->status)) { - iwl_op_mode_nic_error(trans->op_mode); + iwl_op_mode_nic_error(trans->op_mode, sync); trans->state = IWL_TRANS_NO_FW; } } diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 1f43079f02af..880cf2042531 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -1400,7 +1400,7 @@ void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) * can't recover this since we're already half suspended. */ if (!mvm->fw_restart && fw_error) { - iwl_fw_error_collect(&mvm->fwrt); + iwl_fw_error_collect(&mvm->fwrt, false); } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { struct iwl_mvm_reprobe *reprobe; @@ -1451,7 +1451,7 @@ void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) } } - iwl_fw_error_collect(&mvm->fwrt); + iwl_fw_error_collect(&mvm->fwrt, false); if (fw_error && mvm->fw_restart > 0) mvm->fw_restart--; @@ -1459,13 +1459,23 @@ void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error) } } -static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) +static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode, bool sync) { struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); if (!test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) iwl_mvm_dump_nic_error_log(mvm); + if (sync) { + iwl_fw_error_collect(&mvm->fwrt, true); + /* + * Currently, the only case for sync=true is during + * shutdown, so just stop in this case. If/when that + * changes, we need to be a bit smarter here. + */ + return; + } + /* * If the firmware crashes while we're already considering it * to be dead then don't ask for a restart, that cannot do diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index ff7ca3c57f34..54bfc01ab34c 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -1656,7 +1656,7 @@ static void iwl_pcie_irq_handle_error(struct iwl_trans *trans) /* The STATUS_FW_ERROR bit is set in this function. This must happen * before we wake up the command caller, to ensure a proper cleanup. */ - iwl_trans_fw_error(trans); + iwl_trans_fw_error(trans, false); clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status); wake_up(&trans->wait_command_queue); |