atl1c: using fixed TXQ configuration for l2cb and l1c

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@qca.qualcomm.com>
Tested-by: Liu David <dwliu@qca.qualcomm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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 */

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);
 }