1 files changed, 279 insertions, 13 deletions

diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index f95a9aac56ee..7292bfe2f7ca 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -2,7 +2,7 @@
 /*
  * Microchip switch driver main logic
  *
- * Copyright (C) 2017-2024 Microchip Technology Inc.
+ * Copyright (C) 2017-2025 Microchip Technology Inc.
  */
 
 #include <linux/delay.h>
@@ -331,6 +331,38 @@ static const struct phylink_mac_ops ksz8_phylink_mac_ops = {
 	.mac_enable_tx_lpi = ksz_phylink_mac_enable_tx_lpi,
 };
 
+static const struct ksz_dev_ops ksz8463_dev_ops = {
+	.setup = ksz8_setup,
+	.get_port_addr = ksz8463_get_port_addr,
+	.cfg_port_member = ksz8_cfg_port_member,
+	.flush_dyn_mac_table = ksz8_flush_dyn_mac_table,
+	.port_setup = ksz8_port_setup,
+	.r_phy = ksz8463_r_phy,
+	.w_phy = ksz8463_w_phy,
+	.r_mib_cnt = ksz8_r_mib_cnt,
+	.r_mib_pkt = ksz8_r_mib_pkt,
+	.r_mib_stat64 = ksz88xx_r_mib_stats64,
+	.freeze_mib = ksz8_freeze_mib,
+	.port_init_cnt = ksz8_port_init_cnt,
+	.fdb_dump = ksz8_fdb_dump,
+	.fdb_add = ksz8_fdb_add,
+	.fdb_del = ksz8_fdb_del,
+	.mdb_add = ksz8_mdb_add,
+	.mdb_del = ksz8_mdb_del,
+	.vlan_filtering = ksz8_port_vlan_filtering,
+	.vlan_add = ksz8_port_vlan_add,
+	.vlan_del = ksz8_port_vlan_del,
+	.mirror_add = ksz8_port_mirror_add,
+	.mirror_del = ksz8_port_mirror_del,
+	.get_caps = ksz8_get_caps,
+	.config_cpu_port = ksz8_config_cpu_port,
+	.enable_stp_addr = ksz8_enable_stp_addr,
+	.reset = ksz8_reset_switch,
+	.init = ksz8_switch_init,
+	.exit = ksz8_switch_exit,
+	.change_mtu = ksz8_change_mtu,
+};
+
 static const struct ksz_dev_ops ksz88xx_dev_ops = {
 	.setup = ksz8_setup,
 	.get_port_addr = ksz8_get_port_addr,
@@ -408,12 +440,29 @@ static void ksz9477_phylink_mac_link_up(struct phylink_config *config,
 					int speed, int duplex, bool tx_pause,
 					bool rx_pause);
 
+static struct phylink_pcs *
+ksz_phylink_mac_select_pcs(struct phylink_config *config,
+			   phy_interface_t interface)
+{
+	struct dsa_port *dp = dsa_phylink_to_port(config);
+	struct ksz_device *dev = dp->ds->priv;
+	struct ksz_port *p = &dev->ports[dp->index];
+
+	if (ksz_is_sgmii_port(dev, dp->index) &&
+	    (interface == PHY_INTERFACE_MODE_SGMII ||
+	    interface == PHY_INTERFACE_MODE_1000BASEX))
+		return p->pcs;
+
+	return NULL;
+}
+
 static const struct phylink_mac_ops ksz9477_phylink_mac_ops = {
 	.mac_config	= ksz_phylink_mac_config,
 	.mac_link_down	= ksz_phylink_mac_link_down,
 	.mac_link_up	= ksz9477_phylink_mac_link_up,
 	.mac_disable_tx_lpi = ksz_phylink_mac_disable_tx_lpi,
 	.mac_enable_tx_lpi = ksz_phylink_mac_enable_tx_lpi,
+	.mac_select_pcs	= ksz_phylink_mac_select_pcs,
 };
 
 static const struct ksz_dev_ops ksz9477_dev_ops = {
@@ -451,6 +500,7 @@ static const struct ksz_dev_ops ksz9477_dev_ops = {
 	.reset = ksz9477_reset_switch,
 	.init = ksz9477_switch_init,
 	.exit = ksz9477_switch_exit,
+	.pcs_create = ksz9477_pcs_create,
 };
 
 static const struct phylink_mac_ops lan937x_phylink_mac_ops = {
@@ -499,6 +549,60 @@ static const struct ksz_dev_ops lan937x_dev_ops = {
 	.exit = lan937x_switch_exit,
 };
 
+static const u16 ksz8463_regs[] = {
+	[REG_SW_MAC_ADDR]		= 0x10,
+	[REG_IND_CTRL_0]		= 0x30,
+	[REG_IND_DATA_8]		= 0x26,
+	[REG_IND_DATA_CHECK]		= 0x26,
+	[REG_IND_DATA_HI]		= 0x28,
+	[REG_IND_DATA_LO]		= 0x2C,
+	[REG_IND_MIB_CHECK]		= 0x2F,
+	[P_FORCE_CTRL]			= 0x0C,
+	[P_LINK_STATUS]			= 0x0E,
+	[P_LOCAL_CTRL]			= 0x0C,
+	[P_NEG_RESTART_CTRL]		= 0x0D,
+	[P_REMOTE_STATUS]		= 0x0E,
+	[P_SPEED_STATUS]		= 0x0F,
+	[S_TAIL_TAG_CTRL]		= 0xAD,
+	[P_STP_CTRL]			= 0x6F,
+	[S_START_CTRL]			= 0x01,
+	[S_BROADCAST_CTRL]		= 0x06,
+	[S_MULTICAST_CTRL]		= 0x04,
+};
+
+static const u32 ksz8463_masks[] = {
+	[PORT_802_1P_REMAPPING]		= BIT(3),
+	[SW_TAIL_TAG_ENABLE]		= BIT(0),
+	[MIB_COUNTER_OVERFLOW]		= BIT(7),
+	[MIB_COUNTER_VALID]		= BIT(6),
+	[VLAN_TABLE_FID]		= GENMASK(15, 12),
+	[VLAN_TABLE_MEMBERSHIP]		= GENMASK(18, 16),
+	[VLAN_TABLE_VALID]		= BIT(19),
+	[STATIC_MAC_TABLE_VALID]	= BIT(19),
+	[STATIC_MAC_TABLE_USE_FID]	= BIT(21),
+	[STATIC_MAC_TABLE_FID]		= GENMASK(25, 22),
+	[STATIC_MAC_TABLE_OVERRIDE]	= BIT(20),
+	[STATIC_MAC_TABLE_FWD_PORTS]	= GENMASK(18, 16),
+	[DYNAMIC_MAC_TABLE_ENTRIES_H]	= GENMASK(1, 0),
+	[DYNAMIC_MAC_TABLE_MAC_EMPTY]	= BIT(2),
+	[DYNAMIC_MAC_TABLE_NOT_READY]	= BIT(7),
+	[DYNAMIC_MAC_TABLE_ENTRIES]	= GENMASK(31, 24),
+	[DYNAMIC_MAC_TABLE_FID]		= GENMASK(19, 16),
+	[DYNAMIC_MAC_TABLE_SRC_PORT]	= GENMASK(21, 20),
+	[DYNAMIC_MAC_TABLE_TIMESTAMP]	= GENMASK(23, 22),
+};
+
+static u8 ksz8463_shifts[] = {
+	[VLAN_TABLE_MEMBERSHIP_S]	= 16,
+	[STATIC_MAC_FWD_PORTS]		= 16,
+	[STATIC_MAC_FID]		= 22,
+	[DYNAMIC_MAC_ENTRIES_H]		= 8,
+	[DYNAMIC_MAC_ENTRIES]		= 24,
+	[DYNAMIC_MAC_FID]		= 16,
+	[DYNAMIC_MAC_TIMESTAMP]		= 22,
+	[DYNAMIC_MAC_SRC_PORT]		= 20,
+};
+
 static const u16 ksz8795_regs[] = {
 	[REG_SW_MAC_ADDR]		= 0x68,
 	[REG_IND_CTRL_0]		= 0x6E,
@@ -1093,8 +1197,7 @@ static const struct regmap_range ksz9477_valid_regs[] = {
 	regmap_reg_range(0x701b, 0x701b),
 	regmap_reg_range(0x701f, 0x7020),
 	regmap_reg_range(0x7030, 0x7030),
-	regmap_reg_range(0x7200, 0x7203),
-	regmap_reg_range(0x7206, 0x7207),
+	regmap_reg_range(0x7200, 0x7207),
 	regmap_reg_range(0x7300, 0x7301),
 	regmap_reg_range(0x7400, 0x7401),
 	regmap_reg_range(0x7403, 0x7403),
@@ -1370,6 +1473,29 @@ static const struct regmap_access_table ksz8873_register_set = {
 };
 
 const struct ksz_chip_data ksz_switch_chips[] = {
+	[KSZ8463] = {
+		.chip_id = KSZ8463_CHIP_ID,
+		.dev_name = "KSZ8463",
+		.num_vlans = 16,
+		.num_alus = 0,
+		.num_statics = 8,
+		.cpu_ports = 0x4,	/* can be configured as cpu port */
+		.port_cnt = 3,
+		.num_tx_queues = 4,
+		.num_ipms = 4,
+		.ops = &ksz8463_dev_ops,
+		.phylink_mac_ops = &ksz88x3_phylink_mac_ops,
+		.mib_names = ksz88xx_mib_names,
+		.mib_cnt = ARRAY_SIZE(ksz88xx_mib_names),
+		.reg_mib_cnt = MIB_COUNTER_NUM,
+		.regs = ksz8463_regs,
+		.masks = ksz8463_masks,
+		.shifts = ksz8463_shifts,
+		.supports_mii = {false, false, true},
+		.supports_rmii = {false, false, true},
+		.internal_phy = {true, true, false},
+	},
+
 	[KSZ8563] = {
 		.chip_id = KSZ8563_CHIP_ID,
 		.dev_name = "KSZ8563",
@@ -1610,6 +1736,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 				   true, false, false},
 		.gbit_capable	= {true, true, true, true, true, true, true},
 		.ptp_capable = true,
+		.sgmii_port = 7,
 		.wr_table = &ksz9477_register_set,
 		.rd_table = &ksz9477_register_set,
 	},
@@ -2002,6 +2129,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.internal_phy	= {true, true, true, true,
 				   true, false, false},
 		.gbit_capable	= {true, true, true, true, true, true, true},
+		.sgmii_port = 7,
 		.wr_table = &ksz9477_register_set,
 		.rd_table = &ksz9477_register_set,
 	},
@@ -2137,7 +2265,7 @@ void ksz_r_mib_stats64(struct ksz_device *dev, int port)
 
 	spin_unlock(&mib->stats64_lock);
 
-	if (dev->info->phy_errata_9477) {
+	if (dev->info->phy_errata_9477 && !ksz_is_sgmii_port(dev, port)) {
 		ret = ksz9477_errata_monitor(dev, port, raw->tx_late_col);
 		if (ret)
 			dev_err(dev->dev, "Failed to monitor transmission halt\n");
@@ -2767,8 +2895,8 @@ static int ksz_irq_common_setup(struct ksz_device *dev, struct ksz_irq *kirq)
 	kirq->dev = dev;
 	kirq->masked = ~0;
 
-	kirq->domain = irq_domain_add_simple(dev->dev->of_node, kirq->nirqs, 0,
-					     &ksz_irq_domain_ops, kirq);
+	kirq->domain = irq_domain_create_simple(dev_fwnode(dev->dev), kirq->nirqs, 0,
+						&ksz_irq_domain_ops, kirq);
 	if (!kirq->domain)
 		return -ENOMEM;
 
@@ -2823,6 +2951,7 @@ static int ksz_parse_drive_strength(struct ksz_device *dev);
 static int ksz_setup(struct dsa_switch *ds)
 {
 	struct ksz_device *dev = ds->priv;
+	u16 storm_mask, storm_rate;
 	struct dsa_port *dp;
 	struct ksz_port *p;
 	const u16 *regs;
@@ -2845,11 +2974,21 @@ static int ksz_setup(struct dsa_switch *ds)
 	if (ret)
 		return ret;
 
+	if (ksz_has_sgmii_port(dev) && dev->dev_ops->pcs_create) {
+		ret = dev->dev_ops->pcs_create(dev);
+		if (ret)
+			return ret;
+	}
+
 	/* set broadcast storm protection 10% rate */
+	storm_mask = BROADCAST_STORM_RATE;
+	storm_rate = (BROADCAST_STORM_VALUE * BROADCAST_STORM_PROT_RATE) / 100;
+	if (ksz_is_ksz8463(dev)) {
+		storm_mask = swab16(storm_mask);
+		storm_rate = swab16(storm_rate);
+	}
 	regmap_update_bits(ksz_regmap_16(dev), regs[S_BROADCAST_CTRL],
-			   BROADCAST_STORM_RATE,
-			   (BROADCAST_STORM_VALUE *
-			   BROADCAST_STORM_PROT_RATE) / 100);
+			   storm_mask, storm_rate);
 
 	dev->dev_ops->config_cpu_port(ds);
 
@@ -3375,6 +3514,7 @@ static enum dsa_tag_protocol ksz_get_tag_protocol(struct dsa_switch *ds,
 		proto = DSA_TAG_PROTO_KSZ8795;
 
 	if (dev->chip_id == KSZ88X3_CHIP_ID ||
+	    dev->chip_id == KSZ8463_CHIP_ID ||
 	    dev->chip_id == KSZ8563_CHIP_ID ||
 	    dev->chip_id == KSZ9893_CHIP_ID ||
 	    dev->chip_id == KSZ9563_CHIP_ID)
@@ -3487,6 +3627,7 @@ static int ksz_max_mtu(struct dsa_switch *ds, int port)
 	case KSZ8794_CHIP_ID:
 	case KSZ8765_CHIP_ID:
 		return KSZ8795_HUGE_PACKET_SIZE - VLAN_ETH_HLEN - ETH_FCS_LEN;
+	case KSZ8463_CHIP_ID:
 	case KSZ88X3_CHIP_ID:
 	case KSZ8864_CHIP_ID:
 	case KSZ8895_CHIP_ID:
@@ -3692,6 +3833,10 @@ static void ksz_phylink_mac_config(struct phylink_config *config,
 	if (dev->info->internal_phy[port])
 		return;
 
+	/* No need to configure XMII control register when using SGMII. */
+	if (ksz_is_sgmii_port(dev, port))
+		return;
+
 	if (phylink_autoneg_inband(mode)) {
 		dev_err(dev->dev, "In-band AN not supported!\n");
 		return;
@@ -3837,6 +3982,9 @@ static int ksz_switch_detect(struct ksz_device *dev)
 	id2 = FIELD_GET(SW_CHIP_ID_M, id16);
 
 	switch (id1) {
+	case KSZ84_FAMILY_ID:
+		dev->chip_id = KSZ8463_CHIP_ID;
+		break;
 	case KSZ87_FAMILY_ID:
 		if (id2 == KSZ87_CHIP_ID_95) {
 			u8 val;
@@ -4078,6 +4226,104 @@ static int ksz_ets_band_to_queue(struct tc_ets_qopt_offload_replace_params *p,
 	return p->bands - 1 - band;
 }
 
+static u8 ksz8463_tc_ctrl(int port, int queue)
+{
+	u8 reg;
+
+	reg = 0xC8 + port * 4;
+	reg += ((3 - queue) / 2) * 2;
+	reg++;
+	reg -= (queue & 1);
+	return reg;
+}
+
+/**
+ * ksz88x3_tc_ets_add - Configure ETS (Enhanced Transmission Selection)
+ *                      for a port on KSZ88x3 switch
+ * @dev: Pointer to the KSZ switch device structure
+ * @port: Port number to configure
+ * @p: Pointer to offload replace parameters describing ETS bands and mapping
+ *
+ * The KSZ88x3 supports two scheduling modes: Strict Priority and
+ * Weighted Fair Queuing (WFQ). Both modes have fixed behavior:
+ *   - No configurable queue-to-priority mapping
+ *   - No weight adjustment in WFQ mode
+ *
+ * This function configures the switch to use strict priority mode by
+ * clearing the WFQ enable bit for all queues associated with ETS bands.
+ * If strict priority is not explicitly requested, the switch will default
+ * to WFQ mode.
+ *
+ * Return: 0 on success, or a negative error code on failure
+ */
+static int ksz88x3_tc_ets_add(struct ksz_device *dev, int port,
+			      struct tc_ets_qopt_offload_replace_params *p)
+{
+	int ret, band;
+
+	/* Only strict priority mode is supported for now.
+	 * WFQ is implicitly enabled when strict mode is disabled.
+	 */
+	for (band = 0; band < p->bands; band++) {
+		int queue = ksz_ets_band_to_queue(p, band);
+		u8 reg;
+
+		/* Calculate TXQ Split Control register address for this
+		 * port/queue
+		 */
+		reg = KSZ8873_TXQ_SPLIT_CTRL_REG(port, queue);
+		if (ksz_is_ksz8463(dev))
+			reg = ksz8463_tc_ctrl(port, queue);
+
+		/* Clear WFQ enable bit to select strict priority scheduling */
+		ret = ksz_rmw8(dev, reg, KSZ8873_TXQ_WFQ_ENABLE, 0);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+/**
+ * ksz88x3_tc_ets_del - Reset ETS (Enhanced Transmission Selection) config
+ *                      for a port on KSZ88x3 switch
+ * @dev: Pointer to the KSZ switch device structure
+ * @port: Port number to reset
+ *
+ * The KSZ88x3 supports only fixed scheduling modes: Strict Priority or
+ * Weighted Fair Queuing (WFQ), with no reconfiguration of weights or
+ * queue mapping. This function resets the port’s scheduling mode to
+ * the default, which is WFQ, by enabling the WFQ bit for all queues.
+ *
+ * Return: 0 on success, or a negative error code on failure
+ */
+static int ksz88x3_tc_ets_del(struct ksz_device *dev, int port)
+{
+	int ret, queue;
+
+	/* Iterate over all transmit queues for this port */
+	for (queue = 0; queue < dev->info->num_tx_queues; queue++) {
+		u8 reg;
+
+		/* Calculate TXQ Split Control register address for this
+		 * port/queue
+		 */
+		reg = KSZ8873_TXQ_SPLIT_CTRL_REG(port, queue);
+		if (ksz_is_ksz8463(dev))
+			reg = ksz8463_tc_ctrl(port, queue);
+
+		/* Set WFQ enable bit to revert back to default scheduling
+		 * mode
+		 */
+		ret = ksz_rmw8(dev, reg, KSZ8873_TXQ_WFQ_ENABLE,
+			       KSZ8873_TXQ_WFQ_ENABLE);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
 static int ksz_queue_set_strict(struct ksz_device *dev, int port, int queue)
 {
 	int ret;
@@ -4159,6 +4405,7 @@ static int ksz_tc_ets_del(struct ksz_device *dev, int port)
 	for (queue = 0; queue < dev->info->num_tx_queues; queue++) {
 		ret = ksz_queue_set_wrr(dev, port, queue,
 					KSZ9477_DEFAULT_WRR_WEIGHT);
+
 		if (ret)
 			return ret;
 	}
@@ -4211,7 +4458,7 @@ static int ksz_tc_setup_qdisc_ets(struct dsa_switch *ds, int port,
 	struct ksz_device *dev = ds->priv;
 	int ret;
 
-	if (is_ksz8(dev))
+	if (is_ksz8(dev) && !(ksz_is_ksz88x3(dev) || ksz_is_ksz8463(dev)))
 		return -EOPNOTSUPP;
 
 	if (qopt->parent != TC_H_ROOT) {
@@ -4225,9 +4472,16 @@ static int ksz_tc_setup_qdisc_ets(struct dsa_switch *ds, int port,
 		if (ret)
 			return ret;
 
-		return ksz_tc_ets_add(dev, port, &qopt->replace_params);
+		if (ksz_is_ksz88x3(dev) || ksz_is_ksz8463(dev))
+			return ksz88x3_tc_ets_add(dev, port,
+						  &qopt->replace_params);
+		else
+			return ksz_tc_ets_add(dev, port, &qopt->replace_params);
 	case TC_ETS_DESTROY:
-		return ksz_tc_ets_del(dev, port);
+		if (ksz_is_ksz88x3(dev) || ksz_is_ksz8463(dev))
+			return ksz88x3_tc_ets_del(dev, port);
+		else
+			return ksz_tc_ets_del(dev, port);
 	case TC_ETS_STATS:
 	case TC_ETS_GRAFT:
 		return -EOPNOTSUPP;
@@ -4567,7 +4821,16 @@ int ksz_switch_macaddr_get(struct dsa_switch *ds, int port,
 
 	/* Program the switch MAC address to hardware */
 	for (i = 0; i < ETH_ALEN; i++) {
-		ret = ksz_write8(dev, regs[REG_SW_MAC_ADDR] + i, addr[i]);
+		if (ksz_is_ksz8463(dev)) {
+			u16 addr16 = ((u16)addr[i] << 8) | addr[i + 1];
+
+			ret = ksz_write16(dev, regs[REG_SW_MAC_ADDR] + i,
+					  addr16);
+			i++;
+		} else {
+			ret = ksz_write8(dev, regs[REG_SW_MAC_ADDR] + i,
+					 addr[i]);
+		}
 		if (ret)
 			goto macaddr_drop;
 	}
@@ -5176,6 +5439,9 @@ int ksz_switch_register(struct ksz_device *dev)
 						&dev->ports[port_num].interface);
 
 				ksz_parse_rgmii_delay(dev, port_num, port);
+				dev->ports[port_num].fiber =
+					of_property_read_bool(port,
+							      "micrel,fiber-mode");
 			}
 			of_node_put(ports);
 		}