i40e: add clear_pxe AdminQ request

Add the clear_pxe AdminQ API call.

Change-ID: Ia770ff3404971bb3889b53a39c3a7bfaf3f4d399
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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

@@ -793,6 +793,9 @@ void i40e_clear_pxe_mode(struct i40e_hw *hw)
 {
 	u32 reg;
 
+	if (i40e_check_asq_alive(hw))
+		i40e_aq_clear_pxe_mode(hw, NULL);
+
 	/* Clear single descriptor fetch/write-back mode */
 	reg = rd32(hw, I40E_GLLAN_RCTL_0);
 
@@ -910,6 +913,33 @@ void i40e_led_set(struct i40e_hw *hw, u32 mode, bool blink)
 
 /* Admin command wrappers */
 
+/**
+ * i40e_aq_clear_pxe_mode
+ * @hw: pointer to the hw struct
+ * @cmd_details: pointer to command details structure or NULL
+ *
+ * Tell the firmware that the driver is taking over from PXE
+ **/
+i40e_status i40e_aq_clear_pxe_mode(struct i40e_hw *hw,
+				struct i40e_asq_cmd_details *cmd_details)
+{
+	i40e_status status;
+	struct i40e_aq_desc desc;
+	struct i40e_aqc_clear_pxe *cmd =
+		(struct i40e_aqc_clear_pxe *)&desc.params.raw;
+
+	i40e_fill_default_direct_cmd_desc(&desc,
+					  i40e_aqc_opc_clear_pxe_mode);
+
+	cmd->rx_cnt = 0x2;
+
+	status = i40e_asq_send_command(hw, &desc, NULL, 0, cmd_details);
+
+	wr32(hw, I40E_GLLAN_RCTL_0, 0x1);
+
+	return status;
+}
+
 /**
  * i40e_aq_set_link_restart_an
  * @hw: pointer to the hw struct

drivers/net/ethernet/intel/i40e/i40e_prototype.h

@@ -74,6 +74,8 @@ i40e_status i40e_aq_set_phy_reset(struct i40e_hw *hw,
 				struct i40e_asq_cmd_details *cmd_details);
 i40e_status i40e_aq_set_default_vsi(struct i40e_hw *hw, u16 vsi_id,
 				struct i40e_asq_cmd_details *cmd_details);
+i40e_status i40e_aq_clear_pxe_mode(struct i40e_hw *hw,
+				struct i40e_asq_cmd_details *cmd_details);
 i40e_status i40e_aq_set_link_restart_an(struct i40e_hw *hw,
 				struct i40e_asq_cmd_details *cmd_details);
 i40e_status i40e_aq_get_link_info(struct i40e_hw *hw,