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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 <emmanuel.grumbach@intel.com>
This commit is contained in:
Emmanuel Grumbach 2015-02-10 15:26:57 +02:00
parent 945d4202d9
commit 5a756c20c4
3 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h
View File

@ -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,

14
drivers/net/wireless/iwlwifi/iwl-fw-file.h
View File

@ -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

30
drivers/net/wireless/iwlwifi/mvm/rx.c
View File

@ -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
*/