Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2025-01-07 (ice, igc)

For ice:

Arkadiusz corrects mask value being used to determine DPLL phase range.

Przemyslaw corrects frequency value for E823 devices.

For igc:

En-Wei Wu adds a check and, early, return for failed register read.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  igc: return early when failing to read EECD register
  ice: fix incorrect PHY settings for 100 GB/s
  ice: fix max values for dpll pin phase adjust
====================

Link: https://patch.msgid.link/20250107190150.1758577-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

4 files changed, 33 insertions, 14 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index 1489a8ceec51..ef14cff9a333 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -2264,6 +2264,8 @@ struct ice_aqc_get_pkg_info_resp {
 	struct ice_aqc_get_pkg_info pkg_info[];
 };
 
+#define ICE_AQC_GET_CGU_MAX_PHASE_ADJ	GENMASK(30, 0)
+
 /* Get CGU abilities command response data structure (indirect 0x0C61) */
 struct ice_aqc_get_cgu_abilities {
 	u8 num_inputs;
diff --git a/drivers/net/ethernet/intel/ice/ice_dpll.c b/drivers/net/ethernet/intel/ice/ice_dpll.c
index d5ad6d84007c..38e151c7ea23 100644
--- a/drivers/net/ethernet/intel/ice/ice_dpll.c
+++ b/drivers/net/ethernet/intel/ice/ice_dpll.c
@@ -2065,6 +2065,18 @@ static int ice_dpll_init_worker(struct ice_pf *pf)
 }
 
 /**
+ * ice_dpll_phase_range_set - initialize phase adjust range helper
+ * @range: pointer to phase adjust range struct to be initialized
+ * @phase_adj: a value to be used as min(-)/max(+) boundary
+ */
+static void ice_dpll_phase_range_set(struct dpll_pin_phase_adjust_range *range,
+				     u32 phase_adj)
+{
+	range->min = -phase_adj;
+	range->max = phase_adj;
+}
+
+/**
  * ice_dpll_init_info_pins_generic - initializes generic pins info
  * @pf: board private structure
  * @input: if input pins initialized
@@ -2105,8 +2117,8 @@ static int ice_dpll_init_info_pins_generic(struct ice_pf *pf, bool input)
 	for (i = 0; i < pin_num; i++) {
 		pins[i].idx = i;
 		pins[i].prop.board_label = labels[i];
-		pins[i].prop.phase_range.min = phase_adj_max;
-		pins[i].prop.phase_range.max = -phase_adj_max;
+		ice_dpll_phase_range_set(&pins[i].prop.phase_range,
+					 phase_adj_max);
 		pins[i].prop.capabilities = cap;
 		pins[i].pf = pf;
 		ret = ice_dpll_pin_state_update(pf, &pins[i], pin_type, NULL);
@@ -2152,6 +2164,7 @@ ice_dpll_init_info_direct_pins(struct ice_pf *pf,
 	struct ice_hw *hw = &pf->hw;
 	struct ice_dpll_pin *pins;
 	unsigned long caps;
+	u32 phase_adj_max;
 	u8 freq_supp_num;
 	bool input;
 
@@ -2159,11 +2172,13 @@ ice_dpll_init_info_direct_pins(struct ice_pf *pf,
 	case ICE_DPLL_PIN_TYPE_INPUT:
 		pins = pf->dplls.inputs;
 		num_pins = pf->dplls.num_inputs;
+		phase_adj_max = pf->dplls.input_phase_adj_max;
 		input = true;
 		break;
 	case ICE_DPLL_PIN_TYPE_OUTPUT:
 		pins = pf->dplls.outputs;
 		num_pins = pf->dplls.num_outputs;
+		phase_adj_max = pf->dplls.output_phase_adj_max;
 		input = false;
 		break;
 	default:
@@ -2188,19 +2203,13 @@ ice_dpll_init_info_direct_pins(struct ice_pf *pf,
 				return ret;
 			caps |= (DPLL_PIN_CAPABILITIES_PRIORITY_CAN_CHANGE |
 				 DPLL_PIN_CAPABILITIES_STATE_CAN_CHANGE);
-			pins[i].prop.phase_range.min =
-				pf->dplls.input_phase_adj_max;
-			pins[i].prop.phase_range.max =
-				-pf->dplls.input_phase_adj_max;
 		} else {
-			pins[i].prop.phase_range.min =
-				pf->dplls.output_phase_adj_max;
-			pins[i].prop.phase_range.max =
-				-pf->dplls.output_phase_adj_max;
 			ret = ice_cgu_get_output_pin_state_caps(hw, i, &caps);
 			if (ret)
 				return ret;
 		}
+		ice_dpll_phase_range_set(&pins[i].prop.phase_range,
+					 phase_adj_max);
 		pins[i].prop.capabilities = caps;
 		ret = ice_dpll_pin_state_update(pf, &pins[i], pin_type, NULL);
 		if (ret)
@@ -2308,8 +2317,10 @@ static int ice_dpll_init_info(struct ice_pf *pf, bool cgu)
 	dp->dpll_idx = abilities.pps_dpll_idx;
 	d->num_inputs = abilities.num_inputs;
 	d->num_outputs = abilities.num_outputs;
-	d->input_phase_adj_max = le32_to_cpu(abilities.max_in_phase_adj);
-	d->output_phase_adj_max = le32_to_cpu(abilities.max_out_phase_adj);
+	d->input_phase_adj_max = le32_to_cpu(abilities.max_in_phase_adj) &
+		ICE_AQC_GET_CGU_MAX_PHASE_ADJ;
+	d->output_phase_adj_max = le32_to_cpu(abilities.max_out_phase_adj) &
+		ICE_AQC_GET_CGU_MAX_PHASE_ADJ;
 
 	alloc_size = sizeof(*d->inputs) * d->num_inputs;
 	d->inputs = kzalloc(alloc_size, GFP_KERNEL);
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_consts.h b/drivers/net/ethernet/intel/ice/ice_ptp_consts.h
index 585ce200c60f..d75f0eddd631 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptp_consts.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptp_consts.h
@@ -761,9 +761,9 @@ const struct ice_vernier_info_e82x e822_vernier[NUM_ICE_PTP_LNK_SPD] = {
 		/* rx_desk_rsgb_par */
 		644531250, /* 644.53125 MHz Reed Solomon gearbox */
 		/* tx_desk_rsgb_pcs */
-		644531250, /* 644.53125 MHz Reed Solomon gearbox */
+		390625000, /* 390.625 MHz Reed Solomon gearbox */
 		/* rx_desk_rsgb_pcs */
-		644531250, /* 644.53125 MHz Reed Solomon gearbox */
+		390625000, /* 390.625 MHz Reed Solomon gearbox */
 		/* tx_fixed_delay */
 		1620,
 		/* pmd_adj_divisor */
diff --git a/drivers/net/ethernet/intel/igc/igc_base.c b/drivers/net/ethernet/intel/igc/igc_base.c
index 9fae8bdec2a7..1613b562d17c 100644
--- a/drivers/net/ethernet/intel/igc/igc_base.c
+++ b/drivers/net/ethernet/intel/igc/igc_base.c
@@ -68,6 +68,10 @@ static s32 igc_init_nvm_params_base(struct igc_hw *hw)
 	u32 eecd = rd32(IGC_EECD);
 	u16 size;
 
+	/* failed to read reg and got all F's */
+	if (!(~eecd))
+		return -ENXIO;
+
 	size = FIELD_GET(IGC_EECD_SIZE_EX_MASK, eecd);
 
 	/* Added to a constant, "size" becomes the left-shift value
@@ -221,6 +225,8 @@ static s32 igc_get_invariants_base(struct igc_hw *hw)
 
 	/* NVM initialization */
 	ret_val = igc_init_nvm_params_base(hw);
+	if (ret_val)
+		goto out;
 	switch (hw->mac.type) {
 	case igc_i225:
 		ret_val = igc_init_nvm_params_i225(hw);