i40e/i40evf: Add new HW link info variable an_enabled and function update_link_info

Add a new variable, hw.phy.link_info.an_enabled, to track whether autoneg is
enabled.  Also add a new function update_link_info that will update that
variable as well as calling get_link_info to update the rest of the link info.
Also add get_phy_capabilities to support this.

Change-ID: I5157ef03492b6dd8ec5e608ba0cf9b0db9c01710
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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

@@ -1036,6 +1036,52 @@ void i40e_led_set(struct i40e_hw *hw, u32 mode, bool blink)
 
 /* Admin command wrappers */
 
+/**
+ * i40e_aq_get_phy_capabilities
+ * @hw: pointer to the hw struct
+ * @abilities: structure for PHY capabilities to be filled
+ * @qualified_modules: report Qualified Modules
+ * @report_init: report init capabilities (active are default)
+ * @cmd_details: pointer to command details structure or NULL
+ *
+ * Returns the various PHY abilities supported on the Port.
+ **/
+i40e_status i40e_aq_get_phy_capabilities(struct i40e_hw *hw,
+			bool qualified_modules, bool report_init,
+			struct i40e_aq_get_phy_abilities_resp *abilities,
+			struct i40e_asq_cmd_details *cmd_details)
+{
+	struct i40e_aq_desc desc;
+	i40e_status status;
+	u16 abilities_size = sizeof(struct i40e_aq_get_phy_abilities_resp);
+
+	if (!abilities)
+		return I40E_ERR_PARAM;
+
+	i40e_fill_default_direct_cmd_desc(&desc,
+					  i40e_aqc_opc_get_phy_abilities);
+
+	desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_BUF);
+	if (abilities_size > I40E_AQ_LARGE_BUF)
+		desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_LB);
+
+	if (qualified_modules)
+		desc.params.external.param0 |=
+			cpu_to_le32(I40E_AQ_PHY_REPORT_QUALIFIED_MODULES);
+
+	if (report_init)
+		desc.params.external.param0 |=
+			cpu_to_le32(I40E_AQ_PHY_REPORT_INITIAL_VALUES);
+
+	status = i40e_asq_send_command(hw, &desc, abilities, abilities_size,
+				       cmd_details);
+
+	if (hw->aq.asq_last_status == I40E_AQ_RC_EIO)
+		status = I40E_ERR_UNKNOWN_PHY;
+
+	return status;
+}
+
 /**
  * i40e_aq_clear_pxe_mode
  * @hw: pointer to the hw struct
@@ -1162,6 +1208,35 @@ aq_get_link_info_exit:
 	return status;
 }
 
+/**
+ * i40e_update_link_info
+ * @hw: pointer to the hw struct
+ * @enable_lse: enable/disable LinkStatusEvent reporting
+ *
+ * Returns the link status of the adapter
+ **/
+i40e_status i40e_update_link_info(struct i40e_hw *hw, bool enable_lse)
+{
+	struct i40e_aq_get_phy_abilities_resp abilities;
+	i40e_status status;
+
+	status = i40e_aq_get_link_info(hw, enable_lse, NULL, NULL);
+	if (status)
+		return status;
+
+	status = i40e_aq_get_phy_capabilities(hw, false, false,
+					      &abilities, NULL);
+	if (status)
+		return status;
+
+	if (abilities.abilities & I40E_AQ_PHY_AN_ENABLED)
+		hw->phy.link_info.an_enabled = true;
+	else
+		hw->phy.link_info.an_enabled = false;
+
+	return status;
+}
+
 /**
  * i40e_aq_add_vsi
  * @hw: pointer to the hw struct

drivers/net/ethernet/intel/i40e/i40e_main.c

@@ -5292,7 +5292,7 @@ static void i40e_handle_link_event(struct i40e_pf *pf,
 	 * then see if the status changed while processing the
 	 * initial event.
 	 */
-	i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
+	i40e_update_link_info(&pf->hw, true);
 	i40e_link_event(pf);
 }
 
@@ -8337,7 +8337,7 @@ static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
 		i40e_config_rss(pf);
 
 	/* fill in link information and enable LSE reporting */
-	i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
+	i40e_update_link_info(&pf->hw, true);
 	i40e_link_event(pf);
 
 	/* Initialize user-specific link properties */

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

@@ -82,6 +82,7 @@ i40e_status i40e_aq_set_link_restart_an(struct i40e_hw *hw,
 i40e_status i40e_aq_get_link_info(struct i40e_hw *hw,
 				bool enable_lse, struct i40e_link_status *link,
 				struct i40e_asq_cmd_details *cmd_details);
+i40e_status i40e_update_link_info(struct i40e_hw *hw, bool enable_lse);
 i40e_status i40e_aq_set_local_advt_reg(struct i40e_hw *hw,
 				u64 advt_reg,
 				struct i40e_asq_cmd_details *cmd_details);

drivers/net/ethernet/intel/i40e/i40e_type.h

@@ -166,6 +166,7 @@ struct i40e_link_status {
 	u8 an_info;
 	u8 ext_info;
 	u8 loopback;
+	bool an_enabled;
 	/* is Link Status Event notification to SW enabled */
 	bool lse_enable;
 	u16 max_frame_size;

drivers/net/ethernet/intel/i40evf/i40e_type.h

@@ -166,6 +166,7 @@ struct i40e_link_status {
 	u8 an_info;
 	u8 ext_info;
 	u8 loopback;
+	bool an_enabled;
 	/* is Link Status Event notification to SW enabled */
 	bool lse_enable;
 	u16 max_frame_size;