ice: add AQC get link topology handle support

Add AQC get link topology handle support. This is needed to determine
Direct Attach (DA) or backplane media type for PHY types that support
either. Get link topology handle cage node type request can be used to
determine if a cage is present or not. If a cage is present for PHY
types that supports both DA and backplane media type, then the media
type is DA, else the media type is backplane.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 65 insertions, 1 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 695711e48acc..d8df97158249 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -200,6 +200,56 @@ ice_aq_get_phy_caps(struct ice_port_info *pi, bool qual_mods, u8 report_mode,
 }
 
 /**
+ * ice_aq_get_link_topo_handle - get link topology node return status
+ * @pi: port information structure
+ * @node_type: requested node type
+ * @cd: pointer to command details structure or NULL
+ *
+ * Get link topology node return status for specified node type (0x06E0)
+ *
+ * Node type cage can be used to determine if cage is present. If AQC
+ * returns error (ENOENT), then no cage present. If no cage present, then
+ * connection type is backplane or BASE-T.
+ */
+static enum ice_status
+ice_aq_get_link_topo_handle(struct ice_port_info *pi, u8 node_type,
+			    struct ice_sq_cd *cd)
+{
+	struct ice_aqc_get_link_topo *cmd;
+	struct ice_aq_desc desc;
+
+	cmd = &desc.params.get_link_topo;
+
+	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_link_topo);
+
+	cmd->addr.node_type_ctx = (ICE_AQC_LINK_TOPO_NODE_CTX_PORT <<
+				   ICE_AQC_LINK_TOPO_NODE_CTX_S);
+
+	/* set node type */
+	cmd->addr.node_type_ctx |= (ICE_AQC_LINK_TOPO_NODE_TYPE_M & node_type);
+
+	return ice_aq_send_cmd(pi->hw, &desc, NULL, 0, cd);
+}
+
+/**
+ * ice_is_media_cage_present
+ * @pi: port information structure
+ *
+ * Returns true if media cage is present, else false. If no cage, then
+ * media type is backplane or BASE-T.
+ */
+static bool ice_is_media_cage_present(struct ice_port_info *pi)
+{
+	/* Node type cage can be used to determine if cage is present. If AQC
+	 * returns error (ENOENT), then no cage present. If no cage present then
+	 * connection type is backplane or BASE-T.
+	 */
+	return !ice_aq_get_link_topo_handle(pi,
+					    ICE_AQC_LINK_TOPO_NODE_TYPE_CAGE,
+					    NULL);
+}
+
+/**
  * ice_get_media_type - Gets media type
  * @pi: port information structure
  */
@@ -224,7 +274,6 @@ static enum ice_media_type ice_get_media_type(struct ice_port_info *pi)
 		case ICE_PHY_TYPE_LOW_10G_SFI_C2C:
 		case ICE_PHY_TYPE_LOW_25GBASE_SR:
 		case ICE_PHY_TYPE_LOW_25GBASE_LR:
-		case ICE_PHY_TYPE_LOW_25G_AUI_C2C:
 		case ICE_PHY_TYPE_LOW_40GBASE_SR4:
 		case ICE_PHY_TYPE_LOW_40GBASE_LR4:
 		case ICE_PHY_TYPE_LOW_50GBASE_SR2:
@@ -255,6 +304,16 @@ static enum ice_media_type ice_get_media_type(struct ice_port_info *pi)
 		case ICE_PHY_TYPE_LOW_100GBASE_CR_PAM4:
 		case ICE_PHY_TYPE_LOW_100GBASE_CP2:
 			return ICE_MEDIA_DA;
+		case ICE_PHY_TYPE_LOW_25G_AUI_C2C:
+		case ICE_PHY_TYPE_LOW_40G_XLAUI:
+		case ICE_PHY_TYPE_LOW_50G_LAUI2:
+		case ICE_PHY_TYPE_LOW_50G_AUI2:
+		case ICE_PHY_TYPE_LOW_50G_AUI1:
+		case ICE_PHY_TYPE_LOW_100G_AUI4:
+		case ICE_PHY_TYPE_LOW_100G_CAUI4:
+			if (ice_is_media_cage_present(pi))
+				return ICE_MEDIA_DA;
+			fallthrough;
 		case ICE_PHY_TYPE_LOW_1000BASE_KX:
 		case ICE_PHY_TYPE_LOW_2500BASE_KX:
 		case ICE_PHY_TYPE_LOW_2500BASE_X:
@@ -272,6 +331,11 @@ static enum ice_media_type ice_get_media_type(struct ice_port_info *pi)
 		}
 	} else {
 		switch (hw_link_info->phy_type_high) {
+		case ICE_PHY_TYPE_HIGH_100G_AUI2:
+		case ICE_PHY_TYPE_HIGH_100G_CAUI2:
+			if (ice_is_media_cage_present(pi))
+				return ICE_MEDIA_DA;
+			fallthrough;
 		case ICE_PHY_TYPE_HIGH_100GBASE_KR2_PAM4:
 			return ICE_MEDIA_BACKPLANE;
 		}