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iwlwifi: first config the SCD queues, then activate them 

The DMA channels of the FH should be activated after the
configuration of the SCD queues too.

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 2012-05-28 16:46:20 +03:00 коммит произвёл Johannes Berg
Родитель 588d932044
Коммит fc24861531
1 изменённых файлов: 18 добавлений и 18 удалений
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36
drivers/net/wireless/iwlwifi/pcie/trans.c
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@ -1030,6 +1030,10 @@ static void iwl_tx_start(struct iwl_trans *trans)
spin_lock_irqsave(&trans_pcie->irq_lock, flags);
/* make sure all queue are not stopped/used */
memset(trans_pcie->queue_stopped, 0, sizeof(trans_pcie->queue_stopped));
memset(trans_pcie->queue_used, 0, sizeof(trans_pcie->queue_used));
trans_pcie->scd_base_addr =
iwl_read_prph(trans, SCD_SRAM_BASE_ADDR);
a = trans_pcie->scd_base_addr + SCD_CONTEXT_MEM_LOWER_BOUND;
@ -1050,17 +1054,6 @@ static void iwl_tx_start(struct iwl_trans *trans)
iwl_write_prph(trans, SCD_DRAM_BASE_ADDR,
trans_pcie->scd_bc_tbls.dma >> 10);
/* Enable DMA channel */
for (chan = 0; chan < FH_TCSR_CHNL_NUM ; chan++)
iwl_write_direct32(trans, FH_TCSR_CHNL_TX_CONFIG_REG(chan),
FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE);
/* Update FH chicken bits */
reg_val = iwl_read_direct32(trans, FH_TX_CHICKEN_BITS_REG);
iwl_write_direct32(trans, FH_TX_CHICKEN_BITS_REG,
reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN);
iwl_write_prph(trans, SCD_QUEUECHAIN_SEL,
SCD_QUEUECHAIN_SEL_ALL(trans, trans_pcie));
iwl_write_prph(trans, SCD_AGGR_SEL, 0);
@ -1082,15 +1075,8 @@ static void iwl_tx_start(struct iwl_trans *trans)
SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK));
}
/* Activate all Tx DMA/FIFO channels */
iwl_trans_txq_set_sched(trans, IWL_MASK(0, 7));
iwl_trans_set_wr_ptrs(trans, trans_pcie->cmd_queue, 0);
/* make sure all queue are not stopped/used */
memset(trans_pcie->queue_stopped, 0, sizeof(trans_pcie->queue_stopped));
memset(trans_pcie->queue_used, 0, sizeof(trans_pcie->queue_used));
for (i = 0; i < trans_pcie->n_q_to_fifo; i++) {
int fifo = trans_pcie->setup_q_to_fifo[i];
@ -1100,6 +1086,20 @@ static void iwl_tx_start(struct iwl_trans *trans)
fifo, true);
}
/* Activate all Tx DMA/FIFO channels */
iwl_trans_txq_set_sched(trans, IWL_MASK(0, 7));
/* Enable DMA channel */
for (chan = 0; chan < FH_TCSR_CHNL_NUM ; chan++)
iwl_write_direct32(trans, FH_TCSR_CHNL_TX_CONFIG_REG(chan),
FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE);
/* Update FH chicken bits */
reg_val = iwl_read_direct32(trans, FH_TX_CHICKEN_BITS_REG);
iwl_write_direct32(trans, FH_TX_CHICKEN_BITS_REG,
reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN);
spin_unlock_irqrestore(&trans_pcie->irq_lock, flags);
/* Enable L1-Active */