diff options
| author | Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com> | 2012-08-29 19:40:27 +0530 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2012-10-24 11:49:48 +0300 |
| commit | 9233299394de1c571e52ab2dbe1995c1fbdc8fda (patch) | |
| tree | 875d999ad74083140f1560215a88bc94a6e37286 /drivers/net/wireless/ath/ath6kl/core.h | |
| parent | 84caf8005b09e0a4a57fce44119489d1b0bbbe94 (diff) | |
ath6kl: Add support to detect fw error through heart beat
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>
Diffstat (limited to 'drivers/net/wireless/ath/ath6kl/core.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath6kl/core.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/core.h b/drivers/net/wireless/ath/ath6kl/core.h index c7dcdadd8b8..b2cbecf6cfe 100644 --- a/drivers/net/wireless/ath/ath6kl/core.h +++ b/drivers/net/wireless/ath/ath6kl/core.h @@ -130,6 +130,12 @@ enum ath6kl_fw_capability { /* Firmware supports sched scan decoupled from host sleep */ ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, + /* + * Firmware capability for hang detection through heart beat + * challenge messages. + */ + ATH6KL_FW_CAPABILITY_HEART_BEAT_POLL, + /* this needs to be last */ ATH6KL_FW_CAPABILITY_MAX, }; @@ -649,8 +655,11 @@ enum ath6kl_state { }; /* Fw error recovery */ +#define ATH6KL_HB_RESP_MISS_THRES 5 + enum ath6kl_fw_err { ATH6KL_FW_ASSERT, + ATH6KL_FW_HB_RESP_FAILURE, }; struct ath6kl { @@ -800,6 +809,11 @@ struct ath6kl { bool enable; struct work_struct recovery_work; unsigned long err_reason; + unsigned long hb_poll; + struct timer_list hb_timer; + u32 seq_num; + bool hb_pending; + u8 hb_misscnt; } fw_recovery; #ifdef CONFIG_ATH6KL_DEBUG @@ -940,7 +954,9 @@ void ath6kl_core_destroy(struct ath6kl *ar); /* Fw error recovery */ void ath6kl_init_hw_restart(struct ath6kl *ar); void ath6kl_recovery_err_notify(struct ath6kl *ar, enum ath6kl_fw_err reason); +void ath6kl_recovery_hb_event(struct ath6kl *ar, u32 cookie); void ath6kl_recovery_init(struct ath6kl *ar); void ath6kl_recovery_cleanup(struct ath6kl *ar); void ath6kl_recovery_suspend(struct ath6kl *ar); +void ath6kl_recovery_resume(struct ath6kl *ar); #endif /* CORE_H */ |