intel: legacy: field prep conversion

Refactor several older Intel drivers to use FIELD_PREP(), which reduces
lines of code and adds clarity of intent.

This code was generated by the following coccinelle/spatch script and
then manually repaired.

@prep2@
constant shift,mask;
type T;
expression a;
@@
-(((T)(a) << shift) & mask)
+FIELD_PREP(mask, a)

@prep@
constant shift,mask;
type T;
expression a;
@@
-((T)((a) << shift) & mask)
+FIELD_PREP(mask, a)

Cc: Julia Lawall <Julia.Lawall@inria.fr>
Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/e1000e/80003es2lan.c

@@ -1210,8 +1210,8 @@ static s32 e1000_read_kmrn_reg_80003es2lan(struct e1000_hw *hw, u32 offset,
 	if (ret_val)
 		return ret_val;
 
-	kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) &
-		       E1000_KMRNCTRLSTA_OFFSET) | E1000_KMRNCTRLSTA_REN;
+	kmrnctrlsta = FIELD_PREP(E1000_KMRNCTRLSTA_OFFSET, offset) |
+		      E1000_KMRNCTRLSTA_REN;
 	ew32(KMRNCTRLSTA, kmrnctrlsta);
 	e1e_flush();
 
@@ -1245,8 +1245,7 @@ static s32 e1000_write_kmrn_reg_80003es2lan(struct e1000_hw *hw, u32 offset,
 	if (ret_val)
 		return ret_val;
 
-	kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) &
-		       E1000_KMRNCTRLSTA_OFFSET) | data;
+	kmrnctrlsta = FIELD_PREP(E1000_KMRNCTRLSTA_OFFSET, offset) | data;
 	ew32(KMRNCTRLSTA, kmrnctrlsta);
 	e1e_flush();
 

drivers/net/ethernet/intel/e1000e/phy.c

@@ -463,8 +463,8 @@ static s32 __e1000_read_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 *data,
 			return ret_val;
 	}
 
-	kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) &
-		       E1000_KMRNCTRLSTA_OFFSET) | E1000_KMRNCTRLSTA_REN;
+	kmrnctrlsta = FIELD_PREP(E1000_KMRNCTRLSTA_OFFSET, offset) |
+		      E1000_KMRNCTRLSTA_REN;
 	ew32(KMRNCTRLSTA, kmrnctrlsta);
 	e1e_flush();
 
@@ -536,8 +536,7 @@ static s32 __e1000_write_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 data,
 			return ret_val;
 	}
 
-	kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) &
-		       E1000_KMRNCTRLSTA_OFFSET) | data;
+	kmrnctrlsta = FIELD_PREP(E1000_KMRNCTRLSTA_OFFSET, offset) | data;
 	ew32(KMRNCTRLSTA, kmrnctrlsta);
 	e1e_flush();
 

drivers/net/ethernet/intel/fm10k/fm10k_pf.c

@@ -866,8 +866,7 @@ static s32 fm10k_iov_assign_default_mac_vlan_pf(struct fm10k_hw *hw,
 	 * register is RO from the VF, so the PF must do this even in the
 	 * case of notifying the VF of a new VID via the mailbox.
 	 */
-	txqctl = ((u32)vf_vid << FM10K_TXQCTL_VID_SHIFT) &
-		 FM10K_TXQCTL_VID_MASK;
+	txqctl = FIELD_PREP(FM10K_TXQCTL_VID_MASK, vf_vid);
 	txqctl |= (vf_idx << FM10K_TXQCTL_TC_SHIFT) |
 		  FM10K_TXQCTL_VF | vf_idx;
 

drivers/net/ethernet/intel/igb/e1000_phy.c

@@ -255,7 +255,7 @@ s32 igb_read_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 *data)
 	}
 
 	/* Need to byte-swap the 16-bit value. */
-	*data = ((i2ccmd >> 8) & 0x00FF) | ((i2ccmd << 8) & 0xFF00);
+	*data = ((i2ccmd >> 8) & 0x00FF) | FIELD_PREP(0xFF00, i2ccmd);
 
 	return 0;
 }
@@ -282,7 +282,7 @@ s32 igb_write_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 data)
 	}
 
 	/* Swap the data bytes for the I2C interface */
-	phy_data_swapped = ((data >> 8) & 0x00FF) | ((data << 8) & 0xFF00);
+	phy_data_swapped = ((data >> 8) & 0x00FF) | FIELD_PREP(0xFF00, data);
 
 	/* Set up Op-code, Phy Address, and register address in the I2CCMD
 	 * register.  The MAC will take care of interfacing with the

drivers/net/ethernet/intel/igb/igb_ethtool.c

@@ -2711,8 +2711,7 @@ static int igb_rxnfc_write_etype_filter(struct igb_adapter *adapter,
 	etqf |= (etype & E1000_ETQF_ETYPE_MASK);
 
 	etqf &= ~E1000_ETQF_QUEUE_MASK;
-	etqf |= ((input->action << E1000_ETQF_QUEUE_SHIFT)
-		& E1000_ETQF_QUEUE_MASK);
+	etqf |= FIELD_PREP(E1000_ETQF_QUEUE_MASK, input->action);
 	etqf |= E1000_ETQF_QUEUE_ENABLE;
 
 	wr32(E1000_ETQF(i), etqf);

drivers/net/ethernet/intel/igb/igb_main.c

@@ -9810,8 +9810,7 @@ static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate,
 			 tx_rate;
 
 		bcnrc_val = E1000_RTTBCNRC_RS_ENA;
-		bcnrc_val |= ((rf_int << E1000_RTTBCNRC_RF_INT_SHIFT) &
-			      E1000_RTTBCNRC_RF_INT_MASK);
+		bcnrc_val |= FIELD_PREP(E1000_RTTBCNRC_RF_INT_MASK, rf_int);
 		bcnrc_val |= (rf_dec & E1000_RTTBCNRC_RF_DEC_MASK);
 	} else {
 		bcnrc_val = 0;
@@ -10000,8 +9999,7 @@ static void igb_init_dmac(struct igb_adapter *adapter, u32 pba)
 			hwm = 64 * (pba - 6);
 			reg = rd32(E1000_FCRTC);
 			reg &= ~E1000_FCRTC_RTH_COAL_MASK;
-			reg |= ((hwm << E1000_FCRTC_RTH_COAL_SHIFT)
-				& E1000_FCRTC_RTH_COAL_MASK);
+			reg |= FIELD_PREP(E1000_FCRTC_RTH_COAL_MASK, hwm);
 			wr32(E1000_FCRTC, reg);
 
 			/* Set the DMA Coalescing Rx threshold to PBA - 2 * max
@@ -10010,8 +10008,7 @@ static void igb_init_dmac(struct igb_adapter *adapter, u32 pba)
 			dmac_thr = pba - 10;
 			reg = rd32(E1000_DMACR);
 			reg &= ~E1000_DMACR_DMACTHR_MASK;
-			reg |= ((dmac_thr << E1000_DMACR_DMACTHR_SHIFT)
-				& E1000_DMACR_DMACTHR_MASK);
+			reg |= FIELD_PREP(E1000_DMACR_DMACTHR_MASK, dmac_thr);
 
 			/* transition to L0x or L1 if available..*/
 			reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK);

drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c

@@ -794,7 +794,7 @@ static s32 ixgbe_set_vmdq_82598(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
 
 	rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar));
 	rar_high &= ~IXGBE_RAH_VIND_MASK;
-	rar_high |= ((vmdq << IXGBE_RAH_VIND_SHIFT) & IXGBE_RAH_VIND_MASK);
+	rar_high |= FIELD_PREP(IXGBE_RAH_VIND_MASK, vmdq);
 	IXGBE_WRITE_REG(hw, IXGBE_RAH(rar), rar_high);
 	return 0;
 }

drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c

@@ -670,8 +670,8 @@ void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter)
 			int fcoe_i_h = fcoe->offset + ((i + fcreta_size) %
 							fcoe->indices);
 			fcoe_q_h = adapter->rx_ring[fcoe_i_h]->reg_idx;
-			fcoe_q_h = (fcoe_q_h << IXGBE_FCRETA_ENTRY_HIGH_SHIFT) &
-				   IXGBE_FCRETA_ENTRY_HIGH_MASK;
+			fcoe_q_h = FIELD_PREP(IXGBE_FCRETA_ENTRY_HIGH_MASK,
+					      fcoe_q_h);
 		}
 
 		fcoe_i = fcoe->offset + (i % fcoe->indices);