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>

1 files changed, 23 insertions, 12 deletions

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);