From 40fc95d57caf258e20282f6526b695426d65a73a Mon Sep 17 00:00:00 2001 From: "Winkler, Tomas" Date: Wed, 19 Nov 2008 15:32:27 -0800 Subject: [PATCH] iwlwifi: TX update chicken bits This instructs FH to increment the retry count of a packet when it is brought from the memory to TX-FIFO to save transactions during aggregation flow. Signed-off-by: Tomas Winkler Signed-off-by: Reinette Chatre Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-4965.c | 6 ++++++ drivers/net/wireless/iwlwifi/iwl-5000.c | 6 ++++++ drivers/net/wireless/iwlwifi/iwl-fh.h | 5 +++++ 3 files changed, 17 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c index 60769b12b68..ab0b4053198 100644 --- a/drivers/net/wireless/iwlwifi/iwl-4965.c +++ b/drivers/net/wireless/iwlwifi/iwl-4965.c @@ -695,6 +695,7 @@ static int iwl4965_alive_notify(struct iwl_priv *priv) unsigned long flags; int ret; int i, chan; + u32 reg_val; spin_lock_irqsave(&priv->lock, flags); @@ -724,6 +725,11 @@ static int iwl4965_alive_notify(struct iwl_priv *priv) 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(priv, FH_TX_CHICKEN_BITS_REG); + iwl_write_direct32(priv, FH_TX_CHICKEN_BITS_REG, + reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN); + /* Disable chain mode for all queues */ iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0); diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c index d73760c3f76..a738886b434 100644 --- a/drivers/net/wireless/iwlwifi/iwl-5000.c +++ b/drivers/net/wireless/iwlwifi/iwl-5000.c @@ -703,6 +703,7 @@ static int iwl5000_alive_notify(struct iwl_priv *priv) unsigned long flags; int ret; int i, chan; + u32 reg_val; spin_lock_irqsave(&priv->lock, flags); @@ -732,6 +733,11 @@ static int iwl5000_alive_notify(struct iwl_priv *priv) 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(priv, FH_TX_CHICKEN_BITS_REG); + iwl_write_direct32(priv, FH_TX_CHICKEN_BITS_REG, + reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN); + iwl_write_prph(priv, IWL50_SCD_QUEUECHAIN_SEL, IWL50_SCD_QUEUECHAIN_SEL_ALL(priv->hw_params.max_txq_num)); iwl_write_prph(priv, IWL50_SCD_AGGR_SEL, 0); diff --git a/drivers/net/wireless/iwlwifi/iwl-fh.h b/drivers/net/wireless/iwlwifi/iwl-fh.h index bc20acb36aa..c3dadb03701 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fh.h +++ b/drivers/net/wireless/iwlwifi/iwl-fh.h @@ -396,6 +396,11 @@ #define FH_SRVC_CHNL_SRAM_ADDR_REG(_chnl) \ (FH_SRVC_LOWER_BOUND + ((_chnl) - 9) * 0x4) +#define FH_TX_CHICKEN_BITS_REG (FH_MEM_LOWER_BOUND + 0xE98) +/* Instruct FH to increment the retry count of a packet when + * it is brought from the memory to TX-FIFO + */ +#define FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN (0x00000002) /** * struct iwl_rb_status - reseve buffer status -- 2.41.0