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iwlwifi: pcie: stop the firmware when we restart it

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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@intel.com>
This commit is contained in:
Emmanuel Grumbach 2014-02-12 08:51:54 +02:00
parent 1270c416e1
commit cfadc3ffcc
1 changed files with 3 additions and 2 deletions
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5
drivers/net/wireless/iwlwifi/pcie/tx.c
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@ -207,7 +207,7 @@ static void iwl_pcie_txq_stuck_timer(unsigned long data)
IWL_ERR(trans, "scratch %d = 0x%08x\n", i, IWL_ERR(trans, "scratch %d = 0x%08x\n", i,
le32_to_cpu(txq->scratchbufs[i].scratch)); 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) { if (nfreed++ > 0) {
IWL_ERR(trans, "HCMD skipped: index (%d) %d %d\n", IWL_ERR(trans, "HCMD skipped: index (%d) %d %d\n",
idx, q->write_ptr, q->read_ptr); 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)); get_cmd_string(trans_pcie, cmd->id));
ret = -ETIMEDOUT; ret = -ETIMEDOUT;
iwl_write_prph(trans, DEVICE_SET_NMI_REG, 1);
iwl_trans_fw_error(trans); iwl_trans_fw_error(trans);
goto cancel; goto cancel;