From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
In case the firmware didn't assert but we want to restart
it, e.g. we didn't get the reply for a host command, or the
Tx queues are stuck, we should stop the firmware by
provoking an interrupt. This allows to better debug the
firmware in these bad scenarios.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/pcie/tx.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c
index e476d9e..3b0c72c 100644
--- a/drivers/net/wireless/iwlwifi/pcie/tx.c
+++ b/drivers/net/wireless/iwlwifi/pcie/tx.c
@@ -207,7 +207,7 @@ static void iwl_pcie_txq_stuck_timer(unsigned long data)
IWL_ERR(trans, "scratch %d = 0x%08x\n", i,
le32_to_cpu(txq->scratchbufs[i].scratch));
- iwl_trans_fw_error(trans);
+ iwl_write_prph(trans, DEVICE_SET_NMI_REG, 1);
}
/*
@@ -1024,7 +1024,7 @@ static void iwl_pcie_cmdq_reclaim(struct iwl_trans *trans, int txq_id, int idx)
if (nfreed++ > 0) {
IWL_ERR(trans, "HCMD skipped: index (%d) %d %d\n",
idx, q->write_ptr, q->read_ptr);
- iwl_trans_fw_error(trans);
+ iwl_write_prph(trans, DEVICE_SET_NMI_REG, 1);
}
}
@@ -1583,6 +1583,7 @@ static int iwl_pcie_send_hcmd_sync(struct iwl_trans *trans,
get_cmd_string(trans_pcie, cmd->id));
ret = -ETIMEDOUT;
+ iwl_write_prph(trans, DEVICE_SET_NMI_REG, 1);
iwl_trans_fw_error(trans);
goto cancel;
--
1.7.9.5
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