i40e: field prep conversion

Refactor i40e driver 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.

Refactor one function with multiple if's to return quickly to make lines
fit in 80 columns.

@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>

Author: jbrandeb

drivers/net/ethernet/intel/i40e/i40e_common.c

@@ -249,6 +249,7 @@ static int i40e_aq_get_set_rss_lut(struct i40e_hw *hw,
 	struct i40e_aqc_get_set_rss_lut *cmd_resp =
 		   (struct i40e_aqc_get_set_rss_lut *)&desc.params.raw;
 	int status;
+	u16 flags;
 
 	if (set)
 		i40e_fill_default_direct_cmd_desc(&desc,
@@ -261,23 +262,18 @@ static int i40e_aq_get_set_rss_lut(struct i40e_hw *hw,
 	desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_BUF);
 	desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_RD);
 
-	cmd_resp->vsi_id =
-			cpu_to_le16((u16)((vsi_id <<
-					  I40E_AQC_SET_RSS_LUT_VSI_ID_SHIFT) &
-					  I40E_AQC_SET_RSS_LUT_VSI_ID_MASK));
-	cmd_resp->vsi_id |= cpu_to_le16((u16)I40E_AQC_SET_RSS_LUT_VSI_VALID);
+	vsi_id = FIELD_PREP(I40E_AQC_SET_RSS_LUT_VSI_ID_MASK, vsi_id) |
+		 FIELD_PREP(I40E_AQC_SET_RSS_LUT_VSI_VALID, 1);
+	cmd_resp->vsi_id = cpu_to_le16(vsi_id);
 
 	if (pf_lut)
-		cmd_resp->flags |= cpu_to_le16((u16)
-					((I40E_AQC_SET_RSS_LUT_TABLE_TYPE_PF <<
-					I40E_AQC_SET_RSS_LUT_TABLE_TYPE_SHIFT) &
-					I40E_AQC_SET_RSS_LUT_TABLE_TYPE_MASK));
+		flags = FIELD_PREP(I40E_AQC_SET_RSS_LUT_TABLE_TYPE_MASK,
+				   I40E_AQC_SET_RSS_LUT_TABLE_TYPE_PF);
 	else
-		cmd_resp->flags |= cpu_to_le16((u16)
-					((I40E_AQC_SET_RSS_LUT_TABLE_TYPE_VSI <<
-					I40E_AQC_SET_RSS_LUT_TABLE_TYPE_SHIFT) &
-					I40E_AQC_SET_RSS_LUT_TABLE_TYPE_MASK));
+		flags = FIELD_PREP(I40E_AQC_SET_RSS_LUT_TABLE_TYPE_MASK,
+				   I40E_AQC_SET_RSS_LUT_TABLE_TYPE_VSI);
 
+	cmd_resp->flags = cpu_to_le16(flags);
 	status = i40e_asq_send_command(hw, &desc, lut, lut_size, NULL);
 
 	return status;
@@ -347,11 +343,9 @@ static int i40e_aq_get_set_rss_key(struct i40e_hw *hw,
 	desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_BUF);
 	desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_RD);
 
-	cmd_resp->vsi_id =
-			cpu_to_le16((u16)((vsi_id <<
-					  I40E_AQC_SET_RSS_KEY_VSI_ID_SHIFT) &
-					  I40E_AQC_SET_RSS_KEY_VSI_ID_MASK));
-	cmd_resp->vsi_id |= cpu_to_le16((u16)I40E_AQC_SET_RSS_KEY_VSI_VALID);
+	vsi_id = FIELD_PREP(I40E_AQC_SET_RSS_KEY_VSI_ID_MASK, vsi_id) |
+		 FIELD_PREP(I40E_AQC_SET_RSS_KEY_VSI_VALID, 1);
+	cmd_resp->vsi_id = cpu_to_le16(vsi_id);
 
 	status = i40e_asq_send_command(hw, &desc, key, key_size, NULL);
 
@@ -1289,14 +1283,14 @@ void i40e_led_set(struct i40e_hw *hw, u32 mode, bool blink)
 				pin_func = I40E_PIN_FUNC_LED;
 
 			gpio_val &= ~I40E_GLGEN_GPIO_CTL_PIN_FUNC_MASK;
-			gpio_val |= ((pin_func <<
-				     I40E_GLGEN_GPIO_CTL_PIN_FUNC_SHIFT) &
-				     I40E_GLGEN_GPIO_CTL_PIN_FUNC_MASK);
+			gpio_val |=
+				FIELD_PREP(I40E_GLGEN_GPIO_CTL_PIN_FUNC_MASK,
+					   pin_func);
 		}
 		gpio_val &= ~I40E_GLGEN_GPIO_CTL_LED_MODE_MASK;
 		/* this & is a bit of paranoia, but serves as a range check */
-		gpio_val |= ((mode << I40E_GLGEN_GPIO_CTL_LED_MODE_SHIFT) &
-			     I40E_GLGEN_GPIO_CTL_LED_MODE_MASK);
+		gpio_val |= FIELD_PREP(I40E_GLGEN_GPIO_CTL_LED_MODE_MASK,
+				       mode);
 
 		if (blink)
 			gpio_val |= BIT(I40E_GLGEN_GPIO_CTL_LED_BLINK_SHIFT);
@@ -3515,8 +3509,7 @@ int i40e_aq_get_lldp_mib(struct i40e_hw *hw, u8 bridge_type,
 	desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_BUF);
 
 	cmd->type = mib_type & I40E_AQ_LLDP_MIB_TYPE_MASK;
-	cmd->type |= ((bridge_type << I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT) &
-		       I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
+	cmd->type |= FIELD_PREP(I40E_AQ_LLDP_BRIDGE_TYPE_MASK, bridge_type);
 
 	desc.datalen = cpu_to_le16(buff_size);
 
@@ -4234,30 +4227,25 @@ int i40e_set_filter_control(struct i40e_hw *hw,
 
 	/* Program required PE hash buckets for the PF */
 	val &= ~I40E_PFQF_CTL_0_PEHSIZE_MASK;
-	val |= ((u32)settings->pe_filt_num << I40E_PFQF_CTL_0_PEHSIZE_SHIFT) &
-		I40E_PFQF_CTL_0_PEHSIZE_MASK;
+	val |= FIELD_PREP(I40E_PFQF_CTL_0_PEHSIZE_MASK, settings->pe_filt_num);
 	/* Program required PE contexts for the PF */
 	val &= ~I40E_PFQF_CTL_0_PEDSIZE_MASK;
-	val |= ((u32)settings->pe_cntx_num << I40E_PFQF_CTL_0_PEDSIZE_SHIFT) &
-		I40E_PFQF_CTL_0_PEDSIZE_MASK;
+	val |= FIELD_PREP(I40E_PFQF_CTL_0_PEDSIZE_MASK, settings->pe_cntx_num);
 
 	/* Program required FCoE hash buckets for the PF */
 	val &= ~I40E_PFQF_CTL_0_PFFCHSIZE_MASK;
-	val |= ((u32)settings->fcoe_filt_num <<
-			I40E_PFQF_CTL_0_PFFCHSIZE_SHIFT) &
-		I40E_PFQF_CTL_0_PFFCHSIZE_MASK;
+	val |= FIELD_PREP(I40E_PFQF_CTL_0_PFFCHSIZE_MASK,
+			  settings->fcoe_filt_num);
 	/* Program required FCoE DDP contexts for the PF */
 	val &= ~I40E_PFQF_CTL_0_PFFCDSIZE_MASK;
-	val |= ((u32)settings->fcoe_cntx_num <<
-			I40E_PFQF_CTL_0_PFFCDSIZE_SHIFT) &
-		I40E_PFQF_CTL_0_PFFCDSIZE_MASK;
+	val |= FIELD_PREP(I40E_PFQF_CTL_0_PFFCDSIZE_MASK,
+			  settings->fcoe_cntx_num);
 
 	/* Program Hash LUT size for the PF */
 	val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_MASK;
 	if (settings->hash_lut_size == I40E_HASH_LUT_SIZE_512)
 		hash_lut_size = 1;
-	val |= (hash_lut_size << I40E_PFQF_CTL_0_HASHLUTSIZE_SHIFT) &
-		I40E_PFQF_CTL_0_HASHLUTSIZE_MASK;
+	val |= FIELD_PREP(I40E_PFQF_CTL_0_HASHLUTSIZE_MASK, hash_lut_size);
 
 	/* Enable FDIR, Ethertype and MACVLAN filters for PF and VFs */
 	if (settings->enable_fdir)
@@ -5319,16 +5307,17 @@ static void i40e_mdio_if_number_selection(struct i40e_hw *hw, bool set_mdio,
 					  u8 mdio_num,
 					  struct i40e_aqc_phy_register_access *cmd)
 {
-	if (set_mdio && cmd->phy_interface == I40E_AQ_PHY_REG_ACCESS_EXTERNAL) {
-		if (test_bit(I40E_HW_CAP_AQ_PHY_ACCESS_EXTENDED, hw->caps))
-			cmd->cmd_flags |=
-				I40E_AQ_PHY_REG_ACCESS_SET_MDIO_IF_NUMBER |
-				((mdio_num <<
-				I40E_AQ_PHY_REG_ACCESS_MDIO_IF_NUMBER_SHIFT) &
-				I40E_AQ_PHY_REG_ACCESS_MDIO_IF_NUMBER_MASK);
-		else
-			i40e_debug(hw, I40E_DEBUG_PHY,
-				   "MDIO I/F number selection not supported by current FW version.\n");
+	if (!set_mdio ||
+	    cmd->phy_interface != I40E_AQ_PHY_REG_ACCESS_EXTERNAL)
+		return;
+
+	if (test_bit(I40E_HW_CAP_AQ_PHY_ACCESS_EXTENDED, hw->caps)) {
+		cmd->cmd_flags |=
+			I40E_AQ_PHY_REG_ACCESS_SET_MDIO_IF_NUMBER |
+			FIELD_PREP(I40E_AQ_PHY_REG_ACCESS_MDIO_IF_NUMBER_MASK,
+				   mdio_num);
+	} else {
+		i40e_debug(hw, I40E_DEBUG_PHY, "MDIO I/F number selection not supported by current FW version.\n");
 	}
 }