ice: Add NAC Topology device capability parser

Add new device capability ICE_AQC_CAPS_NAC_TOPOLOGY which allows to
determine the mode of operation (1 or 2 NAC).
Define a new structure to store data from new capability and
corresponding parser code.

Co-developed-by: Prathisna Padmasanan <[email protected]>
Signed-off-by: Prathisna Padmasanan <[email protected]>
Signed-off-by: Grzegorz Nitka <[email protected]>
Reviewed-by: Pawel Kaminski <[email protected]>
Reviewed-by: Mateusz Polchlopek <[email protected]>
Reviewed-by: Przemek Kitszel <[email protected]>
Reviewed-by: Arkadiusz Kubalewski <[email protected]>
Signed-off-by: Karol Kolacinski <[email protected]>
Tested-by: Pucha Himasekhar Reddy <[email protected]>
Signed-off-by: Jacob Keller <[email protected]>
Link: https://lore.kernel.org/r/20240528-next-2024-05-28-ptp-refactors-v1-10-c082739bb6f6@intel.com
Signed-off-by: Jakub Kicinski <[email protected]>

Author: gnitka

drivers/net/ethernet/intel/ice/ice_adminq_cmd.h

@@ -122,6 +122,7 @@ struct ice_aqc_list_caps_elem {
 #define ICE_AQC_CAPS_POST_UPDATE_RESET_RESTRICT		0x0077
 #define ICE_AQC_CAPS_NVM_MGMT				0x0080
 #define ICE_AQC_CAPS_TX_SCHED_TOPO_COMP_MODE		0x0085
+#define ICE_AQC_CAPS_NAC_TOPOLOGY			0x0087
 #define ICE_AQC_CAPS_FW_LAG_SUPPORT			0x0092
 #define ICE_AQC_BIT_ROCEV2_LAG				0x01
 #define ICE_AQC_BIT_SRIOV_LAG				0x02

drivers/net/ethernet/intel/ice/ice_common.c

@@ -2593,6 +2593,34 @@ ice_parse_sensor_reading_cap(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
 		  dev_p->supported_sensors);
 }
 
+/**
+ * ice_parse_nac_topo_dev_caps - Parse ICE_AQC_CAPS_NAC_TOPOLOGY cap
+ * @hw: pointer to the HW struct
+ * @dev_p: pointer to device capabilities structure
+ * @cap: capability element to parse
+ *
+ * Parse ICE_AQC_CAPS_NAC_TOPOLOGY for device capabilities.
+ */
+static void ice_parse_nac_topo_dev_caps(struct ice_hw *hw,
+					struct ice_hw_dev_caps *dev_p,
+					struct ice_aqc_list_caps_elem *cap)
+{
+	dev_p->nac_topo.mode = le32_to_cpu(cap->number);
+	dev_p->nac_topo.id = le32_to_cpu(cap->phys_id) & ICE_NAC_TOPO_ID_M;
+
+	dev_info(ice_hw_to_dev(hw),
+		 "PF is configured in %s mode with IP instance ID %d\n",
+		 (dev_p->nac_topo.mode & ICE_NAC_TOPO_PRIMARY_M) ?
+		 "primary" : "secondary", dev_p->nac_topo.id);
+
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: nac topology is_primary = %d\n",
+		  !!(dev_p->nac_topo.mode & ICE_NAC_TOPO_PRIMARY_M));
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: nac topology is_dual = %d\n",
+		  !!(dev_p->nac_topo.mode & ICE_NAC_TOPO_DUAL_M));
+	ice_debug(hw, ICE_DBG_INIT, "dev caps: nac topology id = %d\n",
+		  dev_p->nac_topo.id);
+}
+
 /**
  * ice_parse_dev_caps - Parse device capabilities
  * @hw: pointer to the HW struct
@@ -2644,6 +2672,9 @@ ice_parse_dev_caps(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
 		case ICE_AQC_CAPS_SENSOR_READING:
 			ice_parse_sensor_reading_cap(hw, dev_p, &cap_resp[i]);
 			break;
+		case ICE_AQC_CAPS_NAC_TOPOLOGY:
+			ice_parse_nac_topo_dev_caps(hw, dev_p, &cap_resp[i]);
+			break;
 		default:
 			/* Don't list common capabilities as unknown */
 			if (!found)

drivers/net/ethernet/intel/ice/ice_type.h

@@ -374,6 +374,15 @@ struct ice_ts_dev_info {
 	u8 ts_ll_int_read;
 };
 
+#define ICE_NAC_TOPO_PRIMARY_M	BIT(0)
+#define ICE_NAC_TOPO_DUAL_M	BIT(1)
+#define ICE_NAC_TOPO_ID_M	GENMASK(0xF, 0)
+
+struct ice_nac_topology {
+	u32 mode;
+	u8 id;
+};
+
 /* Function specific capabilities */
 struct ice_hw_func_caps {
 	struct ice_hw_common_caps common_cap;
@@ -395,6 +404,7 @@ struct ice_hw_dev_caps {
 	u32 num_flow_director_fltr;	/* Number of FD filters available */
 	struct ice_ts_dev_info ts_dev_info;
 	u32 num_funcs;
+	struct ice_nac_topology nac_topo;
 	/* bitmap of supported sensors
 	 * bit 0 - internal temperature sensor
 	 * bit 31:1 - Reserved