From: Avri Altman <[email protected]> Currently the firmware is handling this, but that is wrong as it then needs to assume a certain command queue, therefore this should be in the driver; add it here so it can be removed from the firmware in the future.
Signed-off-by: Avri Altman <[email protected]> Signed-off-by: Emmanuel Grumbach <[email protected]> --- drivers/net/wireless/iwlwifi/iwl-prph.h | 1 + drivers/net/wireless/iwlwifi/iwl-scd.h | 6 ++++++ drivers/net/wireless/iwlwifi/pcie/tx.c | 8 ++++++++ 3 files changed, 15 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/iwl-prph.h b/drivers/net/wireless/iwlwifi/iwl-prph.h index 47033a3..9e15273 100644 --- a/drivers/net/wireless/iwlwifi/iwl-prph.h +++ b/drivers/net/wireless/iwlwifi/iwl-prph.h @@ -281,6 +281,7 @@ #define SCD_CHAINEXT_EN (SCD_BASE + 0x244) #define SCD_AGGR_SEL (SCD_BASE + 0x248) #define SCD_INTERRUPT_MASK (SCD_BASE + 0x108) +#define SCD_EN_CTRL (SCD_BASE + 0x254) static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl) { diff --git a/drivers/net/wireless/iwlwifi/iwl-scd.h b/drivers/net/wireless/iwlwifi/iwl-scd.h index 5f099d4..6c622b2 100644 --- a/drivers/net/wireless/iwlwifi/iwl-scd.h +++ b/drivers/net/wireless/iwlwifi/iwl-scd.h @@ -109,4 +109,10 @@ static inline void iwl_scd_deactivate_fifos(struct iwl_trans *trans) { iwl_write_prph(trans, SCD_TXFACT, 0); } + +static inline void iwl_scd_enable_set_active(struct iwl_trans *trans, + u32 value) +{ + iwl_write_prph(trans, SCD_EN_CTRL, value); +} #endif diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index a24c1df..9fdfed8 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -1078,6 +1078,10 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, u16 ssn, if (cfg) { fifo = cfg->fifo; + /* Disable the scheduler prior configuring the cmd queue */ + if (txq_id == trans_pcie->cmd_queue) + iwl_scd_enable_set_active(trans, 0); + /* Stop this Tx queue before configuring it */ iwl_scd_txq_set_inactive(trans, txq_id); @@ -1135,6 +1139,10 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, u16 ssn, (cfg->fifo << SCD_QUEUE_STTS_REG_POS_TXF) | (1 << SCD_QUEUE_STTS_REG_POS_WSL) | SCD_QUEUE_STTS_REG_MSK); + + /* enable the scheduler for this queue (only) */ + if (txq_id == trans_pcie->cmd_queue) + iwl_scd_enable_set_active(trans, BIT(txq_id)); } trans_pcie->txq[txq_id].active = true; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
