ice: add support detecting features based on netlist

Add new functions to check netlist of a given board for:
- Recovered Clock device,
- Clock Generation Unit,
- Clock Multiplexer,

Initialize feature bits depending on detected components.

Signed-off-by: Maciej Machnikowski <maciej.machnikowski@intel.com>

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

@@ -185,6 +185,8 @@
 
 enum ice_feature {
 	ICE_F_DSCP,
+	ICE_F_CGU,
+	ICE_F_PHY_RCLK,
 	ICE_F_SMA_CTRL,
 	ICE_F_MAX
 };

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

@@ -1295,6 +1295,8 @@ struct ice_aqc_link_topo_params {
 #define ICE_AQC_LINK_TOPO_NODE_TYPE_CAGE	6
 #define ICE_AQC_LINK_TOPO_NODE_TYPE_MEZZ	7
 #define ICE_AQC_LINK_TOPO_NODE_TYPE_ID_EEPROM	8
+#define ICE_AQC_LINK_TOPO_NODE_TYPE_CLK_CTRL	9
+#define ICE_AQC_LINK_TOPO_NODE_TYPE_CLK_MUX	10
 #define ICE_AQC_LINK_TOPO_NODE_CTX_S		4
 #define ICE_AQC_LINK_TOPO_NODE_CTX_M		\
 				(0xF << ICE_AQC_LINK_TOPO_NODE_CTX_S)
@@ -1331,7 +1333,10 @@ struct ice_aqc_link_topo_addr {
 struct ice_aqc_get_link_topo {
 	struct ice_aqc_link_topo_addr addr;
 	u8 node_part_num;
-#define ICE_AQC_GET_LINK_TOPO_NODE_NR_PCA9575	0x21
+#define ICE_AQC_GET_LINK_TOPO_NODE_NR_PCA9575		0x21
+#define ICE_ACQ_GET_LINK_TOPO_NODE_NR_ZL30632_80032	0x24
+#define ICE_ACQ_GET_LINK_TOPO_NODE_NR_PKVL		0x31
+#define ICE_ACQ_GET_LINK_TOPO_NODE_NR_GEN_CLK_MUX	0x47
 	u8 rsvd[9];
 };
 

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

@@ -274,6 +274,79 @@ ice_aq_get_link_topo_handle(struct ice_port_info *pi, u8 node_type,
 	return ice_aq_send_cmd(pi->hw, &desc, NULL, 0, cd);
 }
 
+/**
+ * ice_aq_get_netlist_node
+ * @hw: pointer to the hw struct
+ * @cmd: get_link_topo AQ structure
+ * @node_part_number: output node part number if node found
+ * @node_handle: output node handle parameter if node found
+ */
+enum ice_status
+ice_aq_get_netlist_node(struct ice_hw *hw, struct ice_aqc_get_link_topo *cmd,
+			u8 *node_part_number, u16 *node_handle)
+{
+	struct ice_aq_desc desc;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_link_topo);
+	desc.params.get_link_topo = *cmd;
+
+	if (ice_aq_send_cmd(hw, &desc, NULL, 0, NULL))
+		return ICE_ERR_NOT_SUPPORTED;
+
+	if (node_handle)
+		*node_handle =
+			le16_to_cpu(desc.params.get_link_topo.addr.handle);
+	if (node_part_number)
+		*node_part_number = desc.params.get_link_topo.node_part_num;
+
+	return ICE_SUCCESS;
+}
+
+#define MAX_NETLIST_SIZE 10
+/**
+ * ice_find_netlist_node
+ * @hw: pointer to the hw struct
+ * @node_type_ctx: type of netlist node to look for
+ * @node_part_number: node part number to look for
+ * @node_handle: output parameter if node found - optional
+ *
+ * Find and return the node handle for a given node type and part number in the
+ * netlist. When found ICE_SUCCESS is returned, ICE_ERR_DOES_NOT_EXIST
+ * otherwise. If @node_handle provided, it would be set to found node handle.
+ */
+enum ice_status
+ice_find_netlist_node(struct ice_hw *hw, u8 node_type_ctx, u8 node_part_number,
+		      u16 *node_handle)
+{
+	struct ice_aqc_get_link_topo cmd;
+	u8 rec_node_part_number;
+	enum ice_status status;
+	u16 rec_node_handle;
+	u8 idx;
+
+	for (idx = 0; idx < MAX_NETLIST_SIZE; idx++) {
+		memset(&cmd, 0, sizeof(cmd));
+
+		cmd.addr.topo_params.node_type_ctx =
+			(node_type_ctx << ICE_AQC_LINK_TOPO_NODE_TYPE_S);
+		cmd.addr.topo_params.index = idx;
+
+		status = ice_aq_get_netlist_node(hw, &cmd,
+						 &rec_node_part_number,
+						 &rec_node_handle);
+		if (status)
+			return status;
+
+		if (rec_node_part_number == node_part_number) {
+			if (node_handle)
+				*node_handle = rec_node_handle;
+			return ICE_SUCCESS;
+		}
+	}
+
+	return ICE_ERR_DOES_NOT_EXIST;
+}
+
 /**
  * ice_is_media_cage_present
  * @pi: port information structure

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

@@ -89,6 +89,12 @@ ice_aq_get_phy_caps(struct ice_port_info *pi, bool qual_mods, u8 report_mode,
 		    struct ice_aqc_get_phy_caps_data *caps,
 		    struct ice_sq_cd *cd);
 enum ice_status
+ice_aq_get_netlist_node(struct ice_hw *hw, struct ice_aqc_get_link_topo *cmd,
+			u8 *node_part_number, u16 *node_handle);
+enum ice_status
+ice_find_netlist_node(struct ice_hw *hw, u8 node_type_ctx, u8 node_part_number,
+		      u16 *node_handle);
+enum ice_status
 ice_aq_list_caps(struct ice_hw *hw, void *buf, u16 buf_size, u32 *cap_count,
 		 enum ice_adminq_opc opc, struct ice_sq_cd *cd);
 enum ice_status

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

@@ -4185,8 +4185,12 @@ void ice_init_feature_support(struct ice_pf *pf)
 	case ICE_DEV_ID_E810C_QSFP:
 	case ICE_DEV_ID_E810C_SFP:
 		ice_set_feature_support(pf, ICE_F_DSCP);
-		if (ice_is_e810t(&pf->hw))
+		if (ice_is_clock_mux_present_e810t(&pf->hw))
 			ice_set_feature_support(pf, ICE_F_SMA_CTRL);
+		if (ice_is_phy_rclk_present_e810t(&pf->hw))
+			ice_set_feature_support(pf, ICE_F_PHY_RCLK);
+		if (ice_is_cgu_present_e810t(&pf->hw))
+			ice_set_feature_support(pf, ICE_F_CGU);
 		break;
 	default:
 		break;

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

@@ -800,3 +800,53 @@ bool ice_is_pca9575_present(struct ice_hw *hw)
 
 	return !status && handle;
 }
+
+/**
+ * ice_is_phy_rclk_present_e810t
+ * @hw: pointer to the hw struct
+ *
+ * Check if the PHY Recovered Clock device is present in the netlist
+ */
+bool ice_is_phy_rclk_present_e810t(struct ice_hw *hw)
+{
+	if (ice_find_netlist_node(hw, ICE_AQC_LINK_TOPO_NODE_TYPE_CLK_CTRL,
+				  ICE_ACQ_GET_LINK_TOPO_NODE_NR_PKVL, NULL))
+		return false;
+
+	return true;
+}
+
+/**
+ * ice_is_cgu_present_e810t
+ * @hw: pointer to the hw struct
+ *
+ * Check if the Clock Generation Unit (CGU) device is present in the netlist
+ */
+bool ice_is_cgu_present_e810t(struct ice_hw *hw)
+{
+	if (!ice_find_netlist_node(hw, ICE_AQC_LINK_TOPO_NODE_TYPE_CLK_CTRL,
+				   ICE_ACQ_GET_LINK_TOPO_NODE_NR_ZL30632_80032,
+				   NULL)) {
+		hw->cgu_part_number =
+			ICE_ACQ_GET_LINK_TOPO_NODE_NR_ZL30632_80032;
+		return true;
+	}
+	return false;
+}
+
+/**
+ * ice_is_clock_mux_present_e810t
+ * @hw: pointer to the hw struct
+ *
+ * Check if the Clock Multiplexer device is present in the netlist
+ */
+bool ice_is_clock_mux_present_e810t(struct ice_hw *hw)
+{
+	if (ice_find_netlist_node(hw, ICE_AQC_LINK_TOPO_NODE_TYPE_CLK_MUX,
+				  ICE_ACQ_GET_LINK_TOPO_NODE_NR_GEN_CLK_MUX,
+				  NULL))
+		return false;
+
+	return true;
+}
+

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

@@ -33,6 +33,9 @@ int ice_ptp_init_phy_e810(struct ice_hw *hw);
 int ice_read_sma_ctrl_e810t(struct ice_hw *hw, u8 *data);
 int ice_write_sma_ctrl_e810t(struct ice_hw *hw, u8 data);
 bool ice_is_pca9575_present(struct ice_hw *hw);
+bool ice_is_phy_rclk_present_e810t(struct ice_hw *hw);
+bool ice_is_cgu_present_e810t(struct ice_hw *hw);
+bool ice_is_clock_mux_present_e810t(struct ice_hw *hw);
 
 #define PFTSYN_SEM_BYTES	4
 

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

@@ -920,6 +920,7 @@ struct ice_hw {
 	struct list_head rss_list_head;
 	struct ice_mbx_snapshot mbx_snapshot;
 	u16 io_expander_handle;
+	u8 cgu_part_number;
 };
 
 /* Statistics collected by each port, VSI, VEB, and S-channel */