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authorWinkler, Tomas <tomas.winkler@intel.com>2008-11-19 15:32:27 -0800
committerJohn W. Linville <linville@tuxdriver.com>2008-11-26 09:47:39 -0500
commit40fc95d57caf258e20282f6526b695426d65a73a (patch)
treea851f2787c69806daae6b0e21f057bc14021637e
parent31a73fe4f3284d94d52774c285e9e98a5f441d21 (diff)
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 <tomas.winkler@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-4965.c6
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-5000.c6
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-fh.h5
3 files changed, 17 insertions, 0 deletions
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