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iwlwifi: print even more info when a queue is stuck 

Since the queue gets stuck from time to time, we are trying
to get as much information as we can when this occurs.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2012-06-11 11:44:49 +03:00 committed by Johannes Berg
parent 65fe593a51
commit 12af046873
1 changed files with 22 additions and 4 deletions
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26
drivers/net/wireless/iwlwifi/pcie/trans.c
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@ -315,10 +315,6 @@ static void iwl_trans_pcie_queue_stuck_timer(unsigned long data)
jiffies_to_msecs(trans_pcie->wd_timeout));
IWL_ERR(trans, "Current SW read_ptr %d write_ptr %d\n",
txq->q.read_ptr, txq->q.write_ptr);
IWL_ERR(trans, "Current HW read_ptr %d write_ptr %d\n",
iwl_read_prph(trans, SCD_QUEUE_RDPTR(txq->q.id))
& (TFD_QUEUE_SIZE_MAX - 1),
iwl_read_prph(trans, SCD_QUEUE_WRPTR(txq->q.id)));
iwl_read_targ_mem_bytes(trans, scd_sram_addr, buf, sizeof(buf));
@ -328,6 +324,28 @@ static void iwl_trans_pcie_queue_stuck_timer(unsigned long data)
IWL_ERR(trans, "FH TRBs(%d) = 0x%08x\n", i,
iwl_read_direct32(trans, FH_TX_TRB_REG(i)));
for (i = 0; i < trans->cfg->base_params->num_of_queues; i++) {
u32 status = iwl_read_prph(trans, SCD_QUEUE_STATUS_BITS(i));
u8 fifo = (status >> SCD_QUEUE_STTS_REG_POS_TXF) & 0x7;
bool active = !!(status & BIT(SCD_QUEUE_STTS_REG_POS_ACTIVE));
u32 tbl_dw =
iwl_read_targ_mem(trans,
trans_pcie->scd_base_addr +
SCD_TRANS_TBL_OFFSET_QUEUE(i));
if (i & 0x1)
tbl_dw = (tbl_dw & 0xFFFF0000) >> 16;
else
tbl_dw = tbl_dw & 0x0000FFFF;
IWL_ERR(trans,
"Q %d is %sactive and mapped to fifo %d ra_tid 0x%04x [%d,%d]\n",
i, active ? "" : "in", fifo, tbl_dw,
iwl_read_prph(trans,
SCD_QUEUE_RDPTR(i)) & (txq->q.n_bd - 1),
iwl_read_prph(trans, SCD_QUEUE_WRPTR(i)));
}
iwl_op_mode_nic_error(trans->op_mode);
}