From 5a756c20c44fe8b41d8adce090a2cdc95f10ab49 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Tue, 10 Feb 2015 15:26:57 +0200 Subject: [PATCH] iwlwifi: mvm: add trigger for firmware dump upon statistics It can be very useful to monitor the statistics and trigger a firmware dump when a certain value hits a certain offset. Since the statistics are huge, add a generic trigger. When the DWORD at offset X reaches value Y. Since there is another trigger before this one I can't add right now because of a dependency on mac80211, add a reserved entry to keep the enum in place. Signed-off-by: Emmanuel Grumbach --- .../net/wireless/iwlwifi/iwl-fw-error-dump.h | 4 +++ drivers/net/wireless/iwlwifi/iwl-fw-file.h | 14 +++++++++ drivers/net/wireless/iwlwifi/mvm/rx.c | 30 +++++++++++++++++++ 3 files changed, 48 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h b/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h index 1d5195b4aad2..95bef179ddc1 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h +++ b/drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h @@ -246,6 +246,8 @@ iwl_fw_error_next_data(struct iwl_fw_error_dump_data *data) * @FW_DBG_TRIGGER_CHANNEL_SWITCH: trigger log collection upon channel switch. * @FW_DBG_TRIGGER_FW_NOTIF: trigger log collection when the firmware sends a * command response or a notification. + * @FW_DB_TRIGGER_RESERVED: reserved + * @FW_DBG_TRIGGER_STATS: trigger log collection upon statistics threshold. */ enum iwl_fw_dbg_trigger { FW_DBG_TRIGGER_INVALID = 0, @@ -254,6 +256,8 @@ enum iwl_fw_dbg_trigger { FW_DBG_TRIGGER_MISSED_BEACONS, FW_DBG_TRIGGER_CHANNEL_SWITCH, FW_DBG_TRIGGER_FW_NOTIF, + FW_DB_TRIGGER_RESERVED, + FW_DBG_TRIGGER_STATS, /* must be last */ FW_DBG_TRIGGER_MAX, diff --git a/drivers/net/wireless/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/iwlwifi/iwl-fw-file.h index 49388c290704..de0e96d76fa3 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fw-file.h +++ b/drivers/net/wireless/iwlwifi/iwl-fw-file.h @@ -551,6 +551,20 @@ struct iwl_fw_dbg_trigger_cmd { } __packed cmds[16]; } __packed; +/** + * iwl_fw_dbg_trigger_stats - configures trigger for statistics + * @stop_offset: the offset of the value to be monitored + * @stop_threshold: the threshold above which to collect + * @start_offset: the offset of the value to be monitored + * @start_threshold: the threshold above which to start recording + */ +struct iwl_fw_dbg_trigger_stats { + __le32 stop_offset; + __le32 stop_threshold; + __le32 start_offset; + __le32 start_threshold; +} __packed; + /** * struct iwl_fw_dbg_conf_tlv - a TLV that describes a debug configuration. * @id: conf id diff --git a/drivers/net/wireless/iwlwifi/mvm/rx.c b/drivers/net/wireless/iwlwifi/mvm/rx.c index b86ff66ee0ce..9b2c537b5e95 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rx.c +++ b/drivers/net/wireless/iwlwifi/mvm/rx.c @@ -508,6 +508,34 @@ static void iwl_mvm_stat_iterator(void *_data, u8 *mac, } } +static inline void +iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) +{ + struct iwl_fw_dbg_trigger_tlv *trig; + struct iwl_fw_dbg_trigger_stats *trig_stats; + u32 trig_offset, trig_thold; + + if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_STATS)) + return; + + trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_STATS); + trig_stats = (void *)trig->data; + + if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) + return; + + trig_offset = le32_to_cpu(trig_stats->stop_offset); + trig_thold = le32_to_cpu(trig_stats->stop_threshold); + + if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt))) + return; + + if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold) + return; + + iwl_mvm_fw_dbg_collect_trig(mvm, trig, NULL, 0); +} + void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) { @@ -553,6 +581,8 @@ void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm, iwl_mvm_update_rx_statistics(mvm, &stats->rx); } + iwl_mvm_rx_stats_check_trigger(mvm, pkt); + /* Only handle rx statistics temperature changes if async temp * notifications are not supported */ -- 2.20.1