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ath6kl: Add support to detect fw error through heart beat

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This patch adds support to detect fw error condition by sending
periodic message (heart beat challenge) to firmware. Upon reception
of the message, fw would send a response event to driver. When
there are no reponses from fw for about 5 cmd driver would
trigger the recovery logic assuming that fw has gone into an
error state.

Capable fw will advertise this capability through
ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL bit. This feature
is disabled by default, can be enabled through a modparam
(heart_beat_poll). This modparam also confiures the polling
interval in msecs.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Vasanthakumar Thiagarajan
2012-08-29 19:40:27 +05:30
committed by Kalle Valo
parent 84caf8005b
commit 9233299394
7 changed files with 129 additions and 9 deletions
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6
drivers/net/wireless/ath/ath6kl/init.c
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@@ -1697,9 +1697,6 @@ int ath6kl_init_hw_stop(struct ath6kl *ar)
void ath6kl_init_hw_restart(struct ath6kl *ar)
{
ar->state = ATH6KL_STATE_RECOVERY;
ath6kl_cfg80211_stop_all(ar);
if (__ath6kl_init_hw_stop(ar))
@@ -1709,9 +1706,6 @@ void ath6kl_init_hw_restart(struct ath6kl *ar)
ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Failed to restart during fw error recovery\n");
return;
}
ar->state = ATH6KL_STATE_ON;
ar->fw_recovery.err_reason = 0;
}
/* FIXME: move this to cfg80211.c and rename to ath6kl_cfg80211_vif_stop() */