[PATCH 11/12] atl1c: using fixed TXQ configuration for l2cb and l1c
From: xiong
Date: Wed Apr 18 2012 - 01:34:28 EST
using fixed TXQ config for l2cb and l1c regardless dmar_block
to make tx-DMA more stable.
register REG_TXQ_CTRL is refined as well.
Signed-off-by: xiong <xiong@xxxxxxxxxxxxxxxx>
Tested-by: Liu David <dwliu@xxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/atheros/atl1c/atl1c_hw.h | 34 +++++++++++++++++------
drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 13 ++-------
2 files changed, 28 insertions(+), 19 deletions(-)
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
index f502b4d..a0b56ef 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
@@ -467,15 +467,31 @@ int atl1c_phy_power_saving(struct atl1c_hw *hw);
#define TPD_RING_SIZE_MASK 0xFFFF
/* TXQ Control Register */
-#define REG_TXQ_CTRL 0x1590
-#define TXQ_NUM_TPD_BURST_MASK 0xF
-#define TXQ_NUM_TPD_BURST_SHIFT 0
-#define TXQ_CTRL_IP_OPTION_EN 0x10
-#define TXQ_CTRL_EN 0x20
-#define TXQ_CTRL_ENH_MODE 0x40
-#define TXQ_CTRL_LS_8023_EN 0x80
-#define TXQ_TXF_BURST_NUM_SHIFT 16
-#define TXQ_TXF_BURST_NUM_MASK 0xFFFF
+#define REG_TXQ_CTRL 0x1590
+#define TXQ_TXF_BURST_NUM_MASK 0xFFFFUL
+#define TXQ_TXF_BURST_NUM_SHIFT 16
+#define L1C_TXQ_TXF_BURST_PREF 0x200
+#define L2CB_TXQ_TXF_BURST_PREF 0x40
+#define TXQ_CTRL_PEDING_CLR BIT(8)
+#define TXQ_CTRL_LS_8023_EN BIT(7)
+#define TXQ_CTRL_ENH_MODE BIT(6)
+#define TXQ_CTRL_EN BIT(5)
+#define TXQ_CTRL_IP_OPTION_EN BIT(4)
+#define TXQ_NUM_TPD_BURST_MASK 0xFUL
+#define TXQ_NUM_TPD_BURST_SHIFT 0
+#define TXQ_NUM_TPD_BURST_DEF 5
+#define TXQ_CFGV (\
+ FIELDX(TXQ_NUM_TPD_BURST, TXQ_NUM_TPD_BURST_DEF) |\
+ TXQ_CTRL_ENH_MODE |\
+ TXQ_CTRL_LS_8023_EN |\
+ TXQ_CTRL_IP_OPTION_EN)
+#define L1C_TXQ_CFGV (\
+ TXQ_CFGV |\
+ FIELDX(TXQ_TXF_BURST_NUM, L1C_TXQ_TXF_BURST_PREF))
+#define L2CB_TXQ_CFGV (\
+ TXQ_CFGV |\
+ FIELDX(TXQ_TXF_BURST_NUM, L2CB_TXQ_TXF_BURST_PREF))
+
/* Jumbo packet Threshold for task offload */
#define REG_TX_TSO_OFFLOAD_THRESH 0x1594 /* In 8-bytes */
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index d6ebaa4..8e737a5 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -1049,7 +1049,6 @@ static void atl1c_configure_tx(struct atl1c_adapter *adapter)
u32 max_pay_load;
u16 tx_offload_thresh;
u32 txq_ctrl_data;
- u32 max_pay_load_data;
tx_offload_thresh = MAX_TX_OFFLOAD_THRESH;
AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH,
@@ -1059,15 +1058,9 @@ static void atl1c_configure_tx(struct atl1c_adapter *adapter)
DEVICE_CTRL_MAX_RREQ_SZ_MASK;
hw->dmar_block = min_t(u32, max_pay_load, hw->dmar_block);
- txq_ctrl_data = (hw->tpd_burst & TXQ_NUM_TPD_BURST_MASK) <<
- TXQ_NUM_TPD_BURST_SHIFT;
- if (hw->ctrl_flags & ATL1C_TXQ_MODE_ENHANCE)
- txq_ctrl_data |= TXQ_CTRL_ENH_MODE;
- max_pay_load_data = (atl1c_pay_load_size[hw->dmar_block] &
- TXQ_TXF_BURST_NUM_MASK) << TXQ_TXF_BURST_NUM_SHIFT;
- if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2)
- max_pay_load_data >>= 1;
- txq_ctrl_data |= max_pay_load_data;
+ txq_ctrl_data =
+ hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2 ?
+ L2CB_TXQ_CFGV : L1C_TXQ_CFGV;
AT_WRITE_REG(hw, REG_TXQ_CTRL, txq_ctrl_data);
}
--
1.7.7
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