ice: enable timesync operation on 2xNAC E825 devices

According to the E825C specification, SBQ address for ports on a single
complex is device 2 for PHY 0 and device 13 for PHY1.
For accessing ports on a dual complex E825C (so called 2xNAC mode),
the driver should use destination device 2 (referred as phy_0) for
the current complex PHY and device 13 (referred as phy_0_peer) for
peer complex PHY.

Differentiate SBQ destination device by checking if current PF port
number is on the same PHY as target port number.

Adjust 'ice_get_lane_number' function to provide unique port number for
ports from PHY1 in 'dual' mode config (by adding fixed offset for PHY1
ports). Cache this value in ice_hw struct.

Introduce ice_get_primary_hw wrapper to get access to timesync register
not available from second NAC.

Reviewed-by: Simon Horman <[email protected]>
Reviewed-by: Przemek Kitszel <[email protected]>
Signed-off-by: Karol Kolacinski <[email protected]>
Co-developed-by: Grzegorz Nitka <[email protected]>
Signed-off-by: Grzegorz Nitka <[email protected]>
Tested-by: Rinitha S <[email protected]> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <[email protected]>

1 files changed, 58 insertions, 2 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 2694951a0b1d..e42572ae7631 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -193,8 +193,6 @@
 
 #define ice_pf_to_dev(pf) (&((pf)->pdev->dev))
 
-#define ice_pf_src_tmr_owned(pf) ((pf)->hw.func_caps.ts_func_info.src_tmr_owned)
-
 enum ice_feature {
 	ICE_F_DSCP,
 	ICE_F_PHY_RCLK,
@@ -1046,4 +1044,62 @@ static inline void ice_clear_rdma_cap(struct ice_pf *pf)
 }
 
 extern const struct xdp_metadata_ops ice_xdp_md_ops;
+
+/**
+ * ice_is_dual - Check if given config is multi-NAC
+ * @hw: pointer to HW structure
+ *
+ * Return: true if the device is running in mutli-NAC (Network
+ * Acceleration Complex) configuration variant, false otherwise
+ * (always false for non-E825 devices).
+ */
+static inline bool ice_is_dual(struct ice_hw *hw)
+{
+	return hw->mac_type == ICE_MAC_GENERIC_3K_E825 &&
+	       (hw->dev_caps.nac_topo.mode & ICE_NAC_TOPO_DUAL_M);
+}
+
+/**
+ * ice_is_primary - Check if given device belongs to the primary complex
+ * @hw: pointer to HW structure
+ *
+ * Check if given PF/HW is running on primary complex in multi-NAC
+ * configuration.
+ *
+ * Return: true if the device is dual, false otherwise (always true
+ * for non-E825 devices).
+ */
+static inline bool ice_is_primary(struct ice_hw *hw)
+{
+	return hw->mac_type != ICE_MAC_GENERIC_3K_E825 ||
+	       !ice_is_dual(hw) ||
+	       (hw->dev_caps.nac_topo.mode & ICE_NAC_TOPO_PRIMARY_M);
+}
+
+/**
+ * ice_pf_src_tmr_owned - Check if a primary timer is owned by PF
+ * @pf: pointer to PF structure
+ *
+ * Return: true if PF owns primary timer, false otherwise.
+ */
+static inline bool ice_pf_src_tmr_owned(struct ice_pf *pf)
+{
+	return pf->hw.func_caps.ts_func_info.src_tmr_owned &&
+	       ice_is_primary(&pf->hw);
+}
+
+/**
+ * ice_get_primary_hw - Get pointer to primary ice_hw structure
+ * @pf: pointer to PF structure
+ *
+ * Return: A pointer to ice_hw structure with access to timesync
+ * register space.
+ */
+static inline struct ice_hw *ice_get_primary_hw(struct ice_pf *pf)
+{
+	if (!pf->adapter->ctrl_pf)
+		return &pf->hw;
+	else
+		return &pf->adapter->ctrl_pf->hw;
+}
 #endif /* _ICE_H_ */