Merge branch 'lan966x-mqprio-taprio'

Horatiu Vultur says:

====================
net: lan966x: Add mqprio and taprio support

Add support for offloading QoS features with tc command to lan966x. The
offloaded QoS features are mqprio and taprio.

v1->v2:
- fix compilation warning
- rename lan966x_taprio_enable/disable to lan966x_taprio_add/del
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/microchip/lan966x/Makefile

@@ -8,4 +8,5 @@ obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o
 lan966x-switch-objs  := lan966x_main.o lan966x_phylink.o lan966x_port.o \
 			lan966x_mac.o lan966x_ethtool.o lan966x_switchdev.o \
 			lan966x_vlan.o lan966x_fdb.o lan966x_mdb.o \
-			lan966x_ptp.o lan966x_fdma.o lan966x_lag.o
+			lan966x_ptp.o lan966x_fdma.o lan966x_lag.o \
+			lan966x_tc.o lan966x_mqprio.o lan966x_taprio.o

drivers/net/ethernet/microchip/lan966x/lan966x_main.c

@@ -466,6 +466,7 @@ static const struct net_device_ops lan966x_port_netdev_ops = {
 	.ndo_set_mac_address		= lan966x_port_set_mac_address,
 	.ndo_get_port_parent_id		= lan966x_port_get_parent_id,
 	.ndo_eth_ioctl			= lan966x_port_ioctl,
+	.ndo_setup_tc			= lan966x_tc_setup,
 };
 
 bool lan966x_netdevice_check(const struct net_device *dev)
@@ -738,7 +739,8 @@ static int lan966x_probe_port(struct lan966x *lan966x, u32 p,
 		return -EINVAL;
 
 	dev = devm_alloc_etherdev_mqs(lan966x->dev,
-				      sizeof(struct lan966x_port), 8, 1);
+				      sizeof(struct lan966x_port),
+				      NUM_PRIO_QUEUES, 1);
 	if (!dev)
 		return -ENOMEM;
 
@@ -754,7 +756,9 @@ static int lan966x_probe_port(struct lan966x *lan966x, u32 p,
 	dev->netdev_ops = &lan966x_port_netdev_ops;
 	dev->ethtool_ops = &lan966x_ethtool_ops;
 	dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
-			 NETIF_F_HW_VLAN_STAG_TX;
+			 NETIF_F_HW_VLAN_STAG_TX |
+			 NETIF_F_HW_TC;
+	dev->hw_features |= NETIF_F_HW_TC;
 	dev->needed_headroom = IFH_LEN * sizeof(u32);
 
 	eth_hw_addr_gen(dev, lan966x->base_mac, p + 1);
@@ -959,6 +963,8 @@ static void lan966x_init(struct lan966x *lan966x)
 		lan966x, ANA_ANAINTR);
 
 	spin_lock_init(&lan966x->tx_lock);
+
+	lan966x_taprio_init(lan966x);
 }
 
 static int lan966x_ram_init(struct lan966x *lan966x)
@@ -1168,6 +1174,7 @@ static int lan966x_remove(struct platform_device *pdev)
 {
 	struct lan966x *lan966x = platform_get_drvdata(pdev);
 
+	lan966x_taprio_deinit(lan966x);
 	lan966x_fdma_deinit(lan966x);
 	lan966x_cleanup_ports(lan966x);
 

drivers/net/ethernet/microchip/lan966x/lan966x_main.h

@@ -9,6 +9,7 @@
 #include <linux/phy.h>
 #include <linux/phylink.h>
 #include <linux/ptp_clock_kernel.h>
+#include <net/pkt_sched.h>
 #include <net/switchdev.h>
 
 #include "lan966x_regs.h"
@@ -36,6 +37,7 @@
 
 #define NUM_PHYS_PORTS			8
 #define CPU_PORT			8
+#define NUM_PRIO_QUEUES			8
 
 /* Reserved PGIDs */
 #define PGID_CPU			(PGID_AGGR - 6)
@@ -409,6 +411,8 @@ void lan966x_ptp_txtstamp_release(struct lan966x_port *port,
 				  struct sk_buff *skb);
 irqreturn_t lan966x_ptp_irq_handler(int irq, void *args);
 irqreturn_t lan966x_ptp_ext_irq_handler(int irq, void *args);
+u32 lan966x_ptp_get_period_ps(void);
+int lan966x_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts);
 
 int lan966x_fdma_xmit(struct sk_buff *skb, __be32 *ifh, struct net_device *dev);
 int lan966x_fdma_change_mtu(struct lan966x *lan966x);
@@ -445,6 +449,19 @@ void lan966x_port_ageing_set(struct lan966x_port *port,
 			     unsigned long ageing_clock_t);
 void lan966x_update_fwd_mask(struct lan966x *lan966x);
 
+int lan966x_tc_setup(struct net_device *dev, enum tc_setup_type type,
+		     void *type_data);
+
+int lan966x_mqprio_add(struct lan966x_port *port, u8 num_tc);
+int lan966x_mqprio_del(struct lan966x_port *port);
+
+void lan966x_taprio_init(struct lan966x *lan966x);
+void lan966x_taprio_deinit(struct lan966x *lan966x);
+int lan966x_taprio_add(struct lan966x_port *port,
+		       struct tc_taprio_qopt_offload *qopt);
+int lan966x_taprio_del(struct lan966x_port *port);
+int lan966x_taprio_speed_set(struct lan966x_port *port, int speed);
+
 static inline void __iomem *lan_addr(void __iomem *base[],
 				     int id, int tinst, int tcnt,
 				     int gbase, int ginst,

drivers/net/ethernet/microchip/lan966x/lan966x_mqprio.c

+// SPDX-License-Identifier: GPL-2.0+
+
+#include "lan966x_main.h"
+
+int lan966x_mqprio_add(struct lan966x_port *port, u8 num_tc)
+{
+	u8 i;
+
+	if (num_tc != NUM_PRIO_QUEUES) {
+		netdev_err(port->dev, "Only %d tarffic classes supported\n",
+			   NUM_PRIO_QUEUES);
+		return -EINVAL;
+	}
+
+	netdev_set_num_tc(port->dev, num_tc);
+
+	for (i = 0; i < num_tc; ++i)
+		netdev_set_tc_queue(port->dev, i, 1, i);
+
+	return 0;
+}
+
+int lan966x_mqprio_del(struct lan966x_port *port)
+{
+	netdev_reset_tc(port->dev);
+
+	return 0;
+}

drivers/net/ethernet/microchip/lan966x/lan966x_port.c

@@ -165,6 +165,8 @@ static void lan966x_port_link_up(struct lan966x_port *port)
 		break;
 	}
 
+	lan966x_taprio_speed_set(port, config->speed);
+
 	/* Also the GIGA_MODE_ENA(1) needs to be set regardless of the
 	 * port speed for QSGMII ports.
 	 */

drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c

@@ -464,8 +464,7 @@ static int lan966x_ptp_settime64(struct ptp_clock_info *ptp,
 	return 0;
 }
 
-static int lan966x_ptp_gettime64(struct ptp_clock_info *ptp,
-				 struct timespec64 *ts)
+int lan966x_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts)
 {
 	struct lan966x_phc *phc = container_of(ptp, struct lan966x_phc, info);
 	struct lan966x *lan966x = phc->lan966x;
@@ -890,3 +889,9 @@ void lan966x_ptp_rxtstamp(struct lan966x *lan966x, struct sk_buff *skb,
 	shhwtstamps = skb_hwtstamps(skb);
 	shhwtstamps->hwtstamp = full_ts_in_ns;
 }
+
+u32 lan966x_ptp_get_period_ps(void)
+{
+	/* This represents the system clock period in picoseconds */
+	return 15125;
+}

drivers/net/ethernet/microchip/lan966x/lan966x_regs.h

@@ -1018,6 +1018,165 @@ enum lan966x_target {
 /*      QSYS:RES_CTRL:RES_CFG */
 #define QSYS_RES_CFG(g)           __REG(TARGET_QSYS, 0, 1, 32768, g, 1024, 8, 0, 0, 1, 4)
 
+/*      QSYS:TAS_CONFIG:TAS_CFG_CTRL */
+#define QSYS_TAS_CFG_CTRL         __REG(TARGET_QSYS, 0, 1, 57372, 0, 1, 12, 0, 0, 1, 4)
+
+#define QSYS_TAS_CFG_CTRL_LIST_NUM_MAX           GENMASK(27, 23)
+#define QSYS_TAS_CFG_CTRL_LIST_NUM_MAX_SET(x)\
+	FIELD_PREP(QSYS_TAS_CFG_CTRL_LIST_NUM_MAX, x)
+#define QSYS_TAS_CFG_CTRL_LIST_NUM_MAX_GET(x)\
+	FIELD_GET(QSYS_TAS_CFG_CTRL_LIST_NUM_MAX, x)
+
+#define QSYS_TAS_CFG_CTRL_LIST_NUM               GENMASK(22, 18)
+#define QSYS_TAS_CFG_CTRL_LIST_NUM_SET(x)\
+	FIELD_PREP(QSYS_TAS_CFG_CTRL_LIST_NUM, x)
+#define QSYS_TAS_CFG_CTRL_LIST_NUM_GET(x)\
+	FIELD_GET(QSYS_TAS_CFG_CTRL_LIST_NUM, x)
+
+#define QSYS_TAS_CFG_CTRL_ALWAYS_GB_SCH_Q        BIT(17)
+#define QSYS_TAS_CFG_CTRL_ALWAYS_GB_SCH_Q_SET(x)\
+	FIELD_PREP(QSYS_TAS_CFG_CTRL_ALWAYS_GB_SCH_Q, x)
+#define QSYS_TAS_CFG_CTRL_ALWAYS_GB_SCH_Q_GET(x)\
+	FIELD_GET(QSYS_TAS_CFG_CTRL_ALWAYS_GB_SCH_Q, x)
+
+#define QSYS_TAS_CFG_CTRL_GCL_ENTRY_NUM          GENMASK(16, 5)
+#define QSYS_TAS_CFG_CTRL_GCL_ENTRY_NUM_SET(x)\
+	FIELD_PREP(QSYS_TAS_CFG_CTRL_GCL_ENTRY_NUM, x)
+#define QSYS_TAS_CFG_CTRL_GCL_ENTRY_NUM_GET(x)\
+	FIELD_GET(QSYS_TAS_CFG_CTRL_GCL_ENTRY_NUM, x)
+
+/*      QSYS:TAS_CONFIG:TAS_GATE_STATE_CTRL */
+#define QSYS_TAS_GS_CTRL          __REG(TARGET_QSYS, 0, 1, 57372, 0, 1, 12, 4, 0, 1, 4)
+
+#define QSYS_TAS_GS_CTRL_HSCH_POS                GENMASK(2, 0)
+#define QSYS_TAS_GS_CTRL_HSCH_POS_SET(x)\
+	FIELD_PREP(QSYS_TAS_GS_CTRL_HSCH_POS, x)
+#define QSYS_TAS_GS_CTRL_HSCH_POS_GET(x)\
+	FIELD_GET(QSYS_TAS_GS_CTRL_HSCH_POS, x)
+
+/*      QSYS:TAS_CONFIG:TAS_STATEMACHINE_CFG */
+#define QSYS_TAS_STM_CFG          __REG(TARGET_QSYS, 0, 1, 57372, 0, 1, 12, 8, 0, 1, 4)
+
+#define QSYS_TAS_STM_CFG_REVISIT_DLY             GENMASK(7, 0)
+#define QSYS_TAS_STM_CFG_REVISIT_DLY_SET(x)\
+	FIELD_PREP(QSYS_TAS_STM_CFG_REVISIT_DLY, x)
+#define QSYS_TAS_STM_CFG_REVISIT_DLY_GET(x)\
+	FIELD_GET(QSYS_TAS_STM_CFG_REVISIT_DLY, x)
+
+/*      QSYS:TAS_PROFILE_CFG:TAS_PROFILE_CONFIG */
+#define QSYS_TAS_PROFILE_CFG(g)   __REG(TARGET_QSYS, 0, 1, 30720, g, 16, 64, 32, 0, 1, 4)
+
+#define QSYS_TAS_PROFILE_CFG_PORT_NUM            GENMASK(21, 19)
+#define QSYS_TAS_PROFILE_CFG_PORT_NUM_SET(x)\
+	FIELD_PREP(QSYS_TAS_PROFILE_CFG_PORT_NUM, x)
+#define QSYS_TAS_PROFILE_CFG_PORT_NUM_GET(x)\
+	FIELD_GET(QSYS_TAS_PROFILE_CFG_PORT_NUM, x)
+
+#define QSYS_TAS_PROFILE_CFG_LINK_SPEED          GENMASK(18, 16)
+#define QSYS_TAS_PROFILE_CFG_LINK_SPEED_SET(x)\
+	FIELD_PREP(QSYS_TAS_PROFILE_CFG_LINK_SPEED, x)
+#define QSYS_TAS_PROFILE_CFG_LINK_SPEED_GET(x)\
+	FIELD_GET(QSYS_TAS_PROFILE_CFG_LINK_SPEED, x)
+
+/*      QSYS:TAS_LIST_CFG:TAS_BASE_TIME_NSEC */
+#define QSYS_TAS_BT_NSEC          __REG(TARGET_QSYS, 0, 1, 27904, 0, 1, 64, 0, 0, 1, 4)
+
+#define QSYS_TAS_BT_NSEC_NSEC                    GENMASK(29, 0)
+#define QSYS_TAS_BT_NSEC_NSEC_SET(x)\
+	FIELD_PREP(QSYS_TAS_BT_NSEC_NSEC, x)
+#define QSYS_TAS_BT_NSEC_NSEC_GET(x)\
+	FIELD_GET(QSYS_TAS_BT_NSEC_NSEC, x)
+
+/*      QSYS:TAS_LIST_CFG:TAS_BASE_TIME_SEC_LSB */
+#define QSYS_TAS_BT_SEC_LSB       __REG(TARGET_QSYS, 0, 1, 27904, 0, 1, 64, 4, 0, 1, 4)
+
+/*      QSYS:TAS_LIST_CFG:TAS_BASE_TIME_SEC_MSB */
+#define QSYS_TAS_BT_SEC_MSB       __REG(TARGET_QSYS, 0, 1, 27904, 0, 1, 64, 8, 0, 1, 4)
+
+#define QSYS_TAS_BT_SEC_MSB_SEC_MSB              GENMASK(15, 0)
+#define QSYS_TAS_BT_SEC_MSB_SEC_MSB_SET(x)\
+	FIELD_PREP(QSYS_TAS_BT_SEC_MSB_SEC_MSB, x)
+#define QSYS_TAS_BT_SEC_MSB_SEC_MSB_GET(x)\
+	FIELD_GET(QSYS_TAS_BT_SEC_MSB_SEC_MSB, x)
+
+/*      QSYS:TAS_LIST_CFG:TAS_CYCLE_TIME_CFG */
+#define QSYS_TAS_CT_CFG           __REG(TARGET_QSYS, 0, 1, 27904, 0, 1, 64, 24, 0, 1, 4)
+
+/*      QSYS:TAS_LIST_CFG:TAS_STARTUP_CFG */
+#define QSYS_TAS_STARTUP_CFG      __REG(TARGET_QSYS, 0, 1, 27904, 0, 1, 64, 28, 0, 1, 4)
+
+#define QSYS_TAS_STARTUP_CFG_OBSOLETE_IDX        GENMASK(27, 23)
+#define QSYS_TAS_STARTUP_CFG_OBSOLETE_IDX_SET(x)\
+	FIELD_PREP(QSYS_TAS_STARTUP_CFG_OBSOLETE_IDX, x)
+#define QSYS_TAS_STARTUP_CFG_OBSOLETE_IDX_GET(x)\
+	FIELD_GET(QSYS_TAS_STARTUP_CFG_OBSOLETE_IDX, x)
+
+/*      QSYS:TAS_LIST_CFG:TAS_LIST_CFG */
+#define QSYS_TAS_LIST_CFG         __REG(TARGET_QSYS, 0, 1, 27904, 0, 1, 64, 32, 0, 1, 4)
+
+#define QSYS_TAS_LIST_CFG_LIST_BASE_ADDR         GENMASK(11, 0)
+#define QSYS_TAS_LIST_CFG_LIST_BASE_ADDR_SET(x)\
+	FIELD_PREP(QSYS_TAS_LIST_CFG_LIST_BASE_ADDR, x)
+#define QSYS_TAS_LIST_CFG_LIST_BASE_ADDR_GET(x)\
+	FIELD_GET(QSYS_TAS_LIST_CFG_LIST_BASE_ADDR, x)
+
+/*      QSYS:TAS_LIST_CFG:TAS_LIST_STATE */
+#define QSYS_TAS_LST              __REG(TARGET_QSYS, 0, 1, 27904, 0, 1, 64, 36, 0, 1, 4)
+
+#define QSYS_TAS_LST_LIST_STATE                  GENMASK(2, 0)
+#define QSYS_TAS_LST_LIST_STATE_SET(x)\
+	FIELD_PREP(QSYS_TAS_LST_LIST_STATE, x)
+#define QSYS_TAS_LST_LIST_STATE_GET(x)\
+	FIELD_GET(QSYS_TAS_LST_LIST_STATE, x)
+
+/*      QSYS:TAS_GCL_CFG:TAS_GCL_CTRL_CFG */
+#define QSYS_TAS_GCL_CT_CFG       __REG(TARGET_QSYS, 0, 1, 27968, 0, 1, 16, 0, 0, 1, 4)
+
+#define QSYS_TAS_GCL_CT_CFG_HSCH_POS             GENMASK(12, 10)
+#define QSYS_TAS_GCL_CT_CFG_HSCH_POS_SET(x)\
+	FIELD_PREP(QSYS_TAS_GCL_CT_CFG_HSCH_POS, x)
+#define QSYS_TAS_GCL_CT_CFG_HSCH_POS_GET(x)\
+	FIELD_GET(QSYS_TAS_GCL_CT_CFG_HSCH_POS, x)
+
+#define QSYS_TAS_GCL_CT_CFG_GATE_STATE           GENMASK(9, 2)
+#define QSYS_TAS_GCL_CT_CFG_GATE_STATE_SET(x)\
+	FIELD_PREP(QSYS_TAS_GCL_CT_CFG_GATE_STATE, x)
+#define QSYS_TAS_GCL_CT_CFG_GATE_STATE_GET(x)\
+	FIELD_GET(QSYS_TAS_GCL_CT_CFG_GATE_STATE, x)
+
+#define QSYS_TAS_GCL_CT_CFG_OP_TYPE              GENMASK(1, 0)
+#define QSYS_TAS_GCL_CT_CFG_OP_TYPE_SET(x)\
+	FIELD_PREP(QSYS_TAS_GCL_CT_CFG_OP_TYPE, x)
+#define QSYS_TAS_GCL_CT_CFG_OP_TYPE_GET(x)\
+	FIELD_GET(QSYS_TAS_GCL_CT_CFG_OP_TYPE, x)
+
+/*      QSYS:TAS_GCL_CFG:TAS_GCL_CTRL_CFG2 */
+#define QSYS_TAS_GCL_CT_CFG2      __REG(TARGET_QSYS, 0, 1, 27968, 0, 1, 16, 4, 0, 1, 4)
+
+#define QSYS_TAS_GCL_CT_CFG2_PORT_PROFILE        GENMASK(15, 12)
+#define QSYS_TAS_GCL_CT_CFG2_PORT_PROFILE_SET(x)\
+	FIELD_PREP(QSYS_TAS_GCL_CT_CFG2_PORT_PROFILE, x)
+#define QSYS_TAS_GCL_CT_CFG2_PORT_PROFILE_GET(x)\
+	FIELD_GET(QSYS_TAS_GCL_CT_CFG2_PORT_PROFILE, x)
+
+#define QSYS_TAS_GCL_CT_CFG2_NEXT_GCL            GENMASK(11, 0)
+#define QSYS_TAS_GCL_CT_CFG2_NEXT_GCL_SET(x)\
+	FIELD_PREP(QSYS_TAS_GCL_CT_CFG2_NEXT_GCL, x)
+#define QSYS_TAS_GCL_CT_CFG2_NEXT_GCL_GET(x)\
+	FIELD_GET(QSYS_TAS_GCL_CT_CFG2_NEXT_GCL, x)
+
+/*      QSYS:TAS_GCL_CFG:TAS_GCL_TIME_CFG */
+#define QSYS_TAS_GCL_TM_CFG       __REG(TARGET_QSYS, 0, 1, 27968, 0, 1, 16, 8, 0, 1, 4)
+
+/*      QSYS:HSCH_TAS_STATE:TAS_GATE_STATE */
+#define QSYS_TAS_GATE_STATE       __REG(TARGET_QSYS, 0, 1, 28004, 0, 1, 4, 0, 0, 1, 4)
+
+#define QSYS_TAS_GATE_STATE_TAS_GATE_STATE       GENMASK(7, 0)
+#define QSYS_TAS_GATE_STATE_TAS_GATE_STATE_SET(x)\
+	FIELD_PREP(QSYS_TAS_GATE_STATE_TAS_GATE_STATE, x)
+#define QSYS_TAS_GATE_STATE_TAS_GATE_STATE_GET(x)\
+	FIELD_GET(QSYS_TAS_GATE_STATE_TAS_GATE_STATE, x)
+
 /*      REW:PORT:PORT_VLAN_CFG */
 #define REW_PORT_VLAN_CFG(g)      __REG(TARGET_REW, 0, 1, 0, g, 10, 128, 0, 0, 1, 4)
 

drivers/net/ethernet/microchip/lan966x/lan966x_tc.c

+// SPDX-License-Identifier: GPL-2.0+
+
+#include <net/pkt_cls.h>
+
+#include "lan966x_main.h"
+
+static int lan966x_tc_setup_qdisc_mqprio(struct lan966x_port *port,
+					 struct tc_mqprio_qopt_offload *mqprio)
+{
+	u8 num_tc = mqprio->qopt.num_tc;
+
+	mqprio->qopt.hw = TC_MQPRIO_HW_OFFLOAD_TCS;
+
+	return num_tc ? lan966x_mqprio_add(port, num_tc) :
+			lan966x_mqprio_del(port);
+}
+
+static int lan966x_tc_setup_qdisc_taprio(struct lan966x_port *port,
+					 struct tc_taprio_qopt_offload *taprio)
+{
+	return taprio->enable ? lan966x_taprio_add(port, taprio) :
+				lan966x_taprio_del(port);
+}
+
+int lan966x_tc_setup(struct net_device *dev, enum tc_setup_type type,
+		     void *type_data)
+{
+	struct lan966x_port *port = netdev_priv(dev);
+
+	switch (type) {
+	case TC_SETUP_QDISC_MQPRIO:
+		return lan966x_tc_setup_qdisc_mqprio(port, type_data);
+	case TC_SETUP_QDISC_TAPRIO:
+		return lan966x_tc_setup_qdisc_taprio(port, type_data);
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}