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linux-7.2.3/drivers/net/ethernet/ti/icssg/icss_iep.h

@@ -0,0 +1,112 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Texas Instruments ICSSG Industrial Ethernet Peripheral (IEP) Driver
+ *
+ * Copyright (C) 2023 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#ifndef __NET_TI_ICSS_IEP_H
+#define __NET_TI_ICSS_IEP_H
+
+#include <linux/mutex.h>
+#include <linux/ptp_clock_kernel.h>
+#include <linux/regmap.h>
+
+enum {
+	ICSS_IEP_GLOBAL_CFG_REG,
+	ICSS_IEP_GLOBAL_STATUS_REG,
+	ICSS_IEP_COMPEN_REG,
+	ICSS_IEP_SLOW_COMPEN_REG,
+	ICSS_IEP_COUNT_REG0,
+	ICSS_IEP_COUNT_REG1,
+	ICSS_IEP_CAPTURE_CFG_REG,
+	ICSS_IEP_CAPTURE_STAT_REG,
+
+	ICSS_IEP_CAP6_RISE_REG0,
+	ICSS_IEP_CAP6_RISE_REG1,
+
+	ICSS_IEP_CAP7_RISE_REG0,
+	ICSS_IEP_CAP7_RISE_REG1,
+
+	ICSS_IEP_CMP_CFG_REG,
+	ICSS_IEP_CMP_STAT_REG,
+	ICSS_IEP_CMP0_REG0,
+	ICSS_IEP_CMP0_REG1,
+	ICSS_IEP_CMP1_REG0,
+	ICSS_IEP_CMP1_REG1,
+
+	ICSS_IEP_CMP8_REG0,
+	ICSS_IEP_CMP8_REG1,
+	ICSS_IEP_SYNC_CTRL_REG,
+	ICSS_IEP_SYNC0_STAT_REG,
+	ICSS_IEP_SYNC1_STAT_REG,
+	ICSS_IEP_SYNC_PWIDTH_REG,
+	ICSS_IEP_SYNC0_PERIOD_REG,
+	ICSS_IEP_SYNC1_DELAY_REG,
+	ICSS_IEP_SYNC_START_REG,
+	ICSS_IEP_MAX_REGS,
+};
+
+/**
+ * struct icss_iep_plat_data - Plat data to handle SoC variants
+ * @config: Regmap configuration data
+ * @reg_offs: register offsets to capture offset differences across SoCs
+ * @flags: Flags to represent IEP properties
+ */
+struct icss_iep_plat_data {
+	const struct regmap_config *config;
+	u32 reg_offs[ICSS_IEP_MAX_REGS];
+	u32 flags;
+};
+
+struct icss_iep {
+	struct device *dev;
+	void __iomem *base;
+	const struct icss_iep_plat_data *plat_data;
+	struct regmap *map;
+	struct device_node *client_np;
+	unsigned long refclk_freq;
+	int clk_tick_time;	/* one refclk tick time in ns */
+	struct ptp_clock_info ptp_info;
+	struct ptp_clock *ptp_clock;
+	struct mutex ptp_clk_mutex;	/* PHC access serializer */
+	u32 def_inc;
+	s16 slow_cmp_inc;
+	u32 slow_cmp_count;
+	const struct icss_iep_clockops *ops;
+	void *clockops_data;
+	u32 cycle_time_ns;
+	u32 perout_enabled;
+	bool pps_enabled;
+	int cap_cmp_irq;
+	u64 period;
+	u32 latch_enable;
+	struct work_struct work;
+};
+
+extern const struct icss_iep_clockops prueth_iep_clockops;
+
+/* Firmware specific clock operations */
+struct icss_iep_clockops {
+	void (*settime)(void *clockops_data, u64 ns);
+	void (*adjtime)(void *clockops_data, s64 delta);
+	u64 (*gettime)(void *clockops_data, struct ptp_system_timestamp *sts);
+	int (*perout_enable)(void *clockops_data,
+			     struct ptp_perout_request *req, int on,
+			     u64 *cmp);
+	int (*extts_enable)(void *clockops_data, u32 index, int on);
+};
+
+struct icss_iep *icss_iep_get(struct device_node *np);
+struct icss_iep *icss_iep_get_idx(struct device_node *np, int idx);
+void icss_iep_put(struct icss_iep *iep);
+int icss_iep_init(struct icss_iep *iep, const struct icss_iep_clockops *clkops,
+		  void *clockops_data, u32 cycle_time_ns);
+int icss_iep_exit(struct icss_iep *iep);
+int icss_iep_get_count_low(struct icss_iep *iep);
+int icss_iep_get_count_hi(struct icss_iep *iep);
+int icss_iep_get_ptp_clock_idx(struct icss_iep *iep);
+void icss_iep_init_fw(struct icss_iep *iep);
+void icss_iep_exit_fw(struct icss_iep *iep);
+
+#endif /* __NET_TI_ICSS_IEP_H */

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_classifier.c

@@ -0,0 +1,534 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Texas Instruments ICSSG Ethernet Driver
+ *
+ * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/types.h>
+#include <linux/regmap.h>
+
+#include "icssg_prueth.h"
+
+#define ICSSG_NUM_CLASSIFIERS	16
+#define ICSSG_NUM_FT1_SLOTS	8
+#define ICSSG_NUM_FT3_SLOTS	16
+
+#define ICSSG_NUM_CLASSIFIERS_IN_USE	5
+
+/* Filter 1 - FT1 */
+#define FT1_NUM_SLOTS	8
+#define FT1_SLOT_SIZE	0x10	/* bytes */
+
+/* offsets from FT1 slot base i.e. slot 1 start */
+#define FT1_DA0		0x0
+#define FT1_DA1		0x4
+#define FT1_DA0_MASK	0x8
+#define FT1_DA1_MASK	0xc
+
+#define FT1_N_REG(slice, n, reg)	\
+	(offs[slice].ft1_slot_base + FT1_SLOT_SIZE * (n) + (reg))
+
+#define FT1_LEN_MASK		GENMASK(19, 16)
+#define FT1_LEN_SHIFT		16
+#define FT1_LEN(len)		(((len) << FT1_LEN_SHIFT) & FT1_LEN_MASK)
+#define FT1_START_MASK		GENMASK(14, 0)
+#define FT1_START(start)	((start) & FT1_START_MASK)
+#define FT1_MATCH_SLOT(n)	(GENMASK(23, 16) & (BIT(n) << 16))
+
+/* FT1 config type */
+enum ft1_cfg_type {
+	FT1_CFG_TYPE_DISABLED = 0,
+	FT1_CFG_TYPE_EQ,
+	FT1_CFG_TYPE_GT,
+	FT1_CFG_TYPE_LT,
+};
+
+#define FT1_CFG_SHIFT(n)	(2 * (n))
+#define FT1_CFG_MASK(n)		(0x3 << FT1_CFG_SHIFT((n)))
+
+/* Filter 3 -  FT3 */
+#define FT3_NUM_SLOTS	16
+#define FT3_SLOT_SIZE	0x20	/* bytes */
+
+/* offsets from FT3 slot n's base */
+#define FT3_START		0
+#define FT3_START_AUTO		0x4
+#define FT3_START_OFFSET	0x8
+#define FT3_JUMP_OFFSET		0xc
+#define FT3_LEN			0x10
+#define FT3_CFG			0x14
+#define FT3_T			0x18
+#define FT3_T_MASK		0x1c
+
+#define FT3_N_REG(slice, n, reg)	\
+	(offs[slice].ft3_slot_base + FT3_SLOT_SIZE * (n) + (reg))
+
+/* offsets from rx_class n's base */
+#define RX_CLASS_AND_EN		0
+#define RX_CLASS_OR_EN		0x4
+#define RX_CLASS_NUM_SLOTS	16
+#define RX_CLASS_EN_SIZE	0x8	/* bytes */
+
+#define RX_CLASS_N_REG(slice, n, reg)	\
+	(offs[slice].rx_class_base + RX_CLASS_EN_SIZE * (n) + (reg))
+
+#define RX_CLASS_OR_REG(slice, n, reg)	\
+	(offs[slice].rx_class_or_base + RX_CLASS_EN_SIZE * (n) + (reg))
+
+/* RX Class Gates */
+#define RX_CLASS_GATES_SIZE	0x4	/* bytes */
+
+#define RX_CLASS_GATES_N_REG(slice, n)	\
+	(offs[slice].rx_class_gates_base + RX_CLASS_GATES_SIZE * (n))
+
+#define RX_CLASS_GATES_ALLOW_MASK	BIT(6)
+#define RX_CLASS_GATES_RAW_MASK		BIT(5)
+#define RX_CLASS_GATES_PHASE_MASK	BIT(4)
+
+/* RX Class traffic data matching bits */
+#define RX_CLASS_FT_UC				BIT(31)
+#define RX_CLASS_FT_MC			BIT(30)
+#define RX_CLASS_FT_BC			BIT(29)
+#define RX_CLASS_FT_FW			BIT(28)
+#define RX_CLASS_FT_RCV			BIT(27)
+#define RX_CLASS_FT_VLAN		BIT(26)
+#define RX_CLASS_FT_DA_P		BIT(25)
+#define RX_CLASS_FT_DA_I		BIT(24)
+#define RX_CLASS_FT_FT1_MATCH_MASK	GENMASK(23, 16)
+#define RX_CLASS_FT_FT1_MATCH_SHIFT	16
+#define RX_CLASS_FT_FT3_MATCH_MASK	GENMASK(15, 0)
+#define RX_CLASS_FT_FT3_MATCH_SHIFT	0
+
+#define RX_CLASS_FT_FT1_MATCH(slot)	\
+	((BIT(slot) << RX_CLASS_FT_FT1_MATCH_SHIFT) & \
+	RX_CLASS_FT_FT1_MATCH_MASK)
+
+/* HSR/PRP protocol frame filtering */
+#define HSR_PTP_ETHERTYPE_OFFSET	0x12
+#define PRP_PTP_ETHERTYPE_OFFSET	0x0C
+#define FT3_PTP_PATTERN			0xF788
+#define FT3_ETHERTYPE_MASK		0xFFFF0000U
+#define FT3_VLAN_MODE_BOTH		0x1
+#define RX_CLASS_OR_DUP_PTP		0x4200
+#define RX_CLASS_OR_HSR_TAG		0x4000
+#define RX_CLASS_GATE_PTP		0x50
+#define RX_CLASS_DISABLE		0x0
+
+/* HSR/PRP classifier indices */
+#define CLASSIFIER_PTP_DUP		10
+#define CLASSIFIER_HSR_TAG		11
+#define FT3_PTP_SLOT			14
+
+/* RX class type */
+enum rx_class_sel_type {
+	RX_CLASS_SEL_TYPE_OR = 0,
+	RX_CLASS_SEL_TYPE_AND = 1,
+	RX_CLASS_SEL_TYPE_OR_AND_AND = 2,
+	RX_CLASS_SEL_TYPE_OR_OR_AND = 3,
+};
+
+#define FT1_CFG_SHIFT(n)	(2 * (n))
+#define FT1_CFG_MASK(n)		(0x3 << FT1_CFG_SHIFT((n)))
+
+#define RX_CLASS_SEL_SHIFT(n)	(2 * (n))
+#define RX_CLASS_SEL_MASK(n)	(0x3 << RX_CLASS_SEL_SHIFT((n)))
+
+#define ICSSG_CFG_OFFSET	0
+#define MAC_INTERFACE_0		0x18
+#define MAC_INTERFACE_1		0x1c
+
+#define ICSSG_CFG_RX_L2_G_EN	BIT(2)
+
+/* These are register offsets per PRU */
+struct miig_rt_offsets {
+	u32 mac0;
+	u32 mac1;
+	u32 ft1_start_len;
+	u32 ft1_cfg;
+	u32 ft1_slot_base;
+	u32 ft3_slot_base;
+	u32 ft3_p_base;
+	u32 ft_rx_ptr;
+	u32 rx_class_base;
+	u32 rx_class_or_base;
+	u32 rx_class_cfg1;
+	u32 rx_class_cfg2;
+	u32 rx_class_gates_base;
+	u32 rx_green;
+	u32 rx_rate_cfg_base;
+	u32 rx_rate_src_sel0;
+	u32 rx_rate_src_sel1;
+	u32 tx_rate_cfg_base;
+	u32 stat_base;
+	u32 tx_hsr_tag;
+	u32 tx_hsr_seq;
+	u32 tx_vlan_type;
+	u32 tx_vlan_ins;
+};
+
+/* These are the offset values for miig_rt_offsets registers */
+static const struct miig_rt_offsets offs[] = {
+	/* PRU0 */
+	{
+		0x8,
+		0xc,
+		0x80,
+		0x84,
+		0x88,
+		0x108,
+		0x308,
+		0x408,
+		0x40c,
+		0x410,
+		0x48c,
+		0x490,
+		0x494,
+		0x4d4,
+		0x4e4,
+		0x504,
+		0x508,
+		0x50c,
+		0x54c,
+		0x63c,
+		0x640,
+		0x644,
+		0x648,
+	},
+	/* PRU1 */
+	{
+		0x10,
+		0x14,
+		0x64c,
+		0x650,
+		0x654,
+		0x6d4,
+		0x8d4,
+		0x9d4,
+		0x9d8,
+		0x9dc,
+		0xa58,
+		0xa5c,
+		0xa60,
+		0xaa0,
+		0xab0,
+		0xad0,
+		0xad4,
+		0xad8,
+		0xb18,
+		0xc08,
+		0xc0c,
+		0xc10,
+		0xc14,
+	},
+};
+
+static void rx_class_ft1_set_start_len(struct regmap *miig_rt, int slice,
+				       u16 start, u8 len)
+{
+	u32 offset, val;
+
+	offset = offs[slice].ft1_start_len;
+	val = FT1_LEN(len) | FT1_START(start);
+	regmap_write(miig_rt, offset, val);
+}
+
+static void rx_class_ft1_set_da(struct regmap *miig_rt, int slice,
+				int n, const u8 *addr)
+{
+	u32 offset;
+
+	offset = FT1_N_REG(slice, n, FT1_DA0);
+	regmap_write(miig_rt, offset, (u32)(addr[0] | addr[1] << 8 |
+		     addr[2] << 16 | addr[3] << 24));
+	offset = FT1_N_REG(slice, n, FT1_DA1);
+	regmap_write(miig_rt, offset, (u32)(addr[4] | addr[5] << 8));
+}
+
+static void rx_class_ft1_set_da_mask(struct regmap *miig_rt, int slice,
+				     int n, const u8 *addr)
+{
+	u32 offset;
+
+	offset = FT1_N_REG(slice, n, FT1_DA0_MASK);
+	regmap_write(miig_rt, offset, (u32)(addr[0] | addr[1] << 8 |
+		     addr[2] << 16 | addr[3] << 24));
+	offset = FT1_N_REG(slice, n, FT1_DA1_MASK);
+	regmap_write(miig_rt, offset, (u32)(addr[4] | addr[5] << 8));
+}
+
+static void rx_class_ft1_cfg_set_type(struct regmap *miig_rt, int slice, int n,
+				      enum ft1_cfg_type type)
+{
+	u32 offset;
+
+	offset = offs[slice].ft1_cfg;
+	regmap_update_bits(miig_rt, offset, FT1_CFG_MASK(n),
+			   type << FT1_CFG_SHIFT(n));
+}
+
+static void rx_class_sel_set_type(struct regmap *miig_rt, int slice, int n,
+				  enum rx_class_sel_type type)
+{
+	u32 offset;
+
+	offset = offs[slice].rx_class_cfg1;
+	regmap_update_bits(miig_rt, offset, RX_CLASS_SEL_MASK(n),
+			   type << RX_CLASS_SEL_SHIFT(n));
+}
+
+static void rx_class_set_and(struct regmap *miig_rt, int slice, int n,
+			     u32 data)
+{
+	u32 offset;
+
+	offset = RX_CLASS_N_REG(slice, n, RX_CLASS_AND_EN);
+	regmap_write(miig_rt, offset, data);
+}
+
+static void rx_class_set_or(struct regmap *miig_rt, int slice, int n,
+			    u32 data)
+{
+	u32 offset;
+
+	offset = RX_CLASS_N_REG(slice, n, RX_CLASS_OR_EN);
+	regmap_write(miig_rt, offset, data);
+}
+
+static u32 rx_class_get_or(struct regmap *miig_rt, int slice, int n)
+{
+	u32 offset, val;
+
+	offset = RX_CLASS_N_REG(slice, n, RX_CLASS_OR_EN);
+	regmap_read(miig_rt, offset, &val);
+
+	return val;
+}
+
+void icssg_class_set_host_mac_addr(struct regmap *miig_rt, const u8 *mac)
+{
+	regmap_write(miig_rt, MAC_INTERFACE_0, (u32)(mac[0] | mac[1] << 8 |
+		     mac[2] << 16 | mac[3] << 24));
+	regmap_write(miig_rt, MAC_INTERFACE_1, (u32)(mac[4] | mac[5] << 8));
+}
+EXPORT_SYMBOL_GPL(icssg_class_set_host_mac_addr);
+
+void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac)
+{
+	regmap_write(miig_rt, offs[slice].mac0, (u32)(mac[0] | mac[1] << 8 |
+		     mac[2] << 16 | mac[3] << 24));
+	regmap_write(miig_rt, offs[slice].mac1, (u32)(mac[4] | mac[5] << 8));
+}
+EXPORT_SYMBOL_GPL(icssg_class_set_mac_addr);
+
+static void icssg_class_ft1_add_mcast(struct regmap *miig_rt, int slice,
+				      int slot, const u8 *addr, const u8 *mask)
+{
+	u32 val;
+	int i;
+
+	WARN(slot >= FT1_NUM_SLOTS, "invalid slot: %d\n", slot);
+
+	rx_class_ft1_set_da(miig_rt, slice, slot, addr);
+	rx_class_ft1_set_da_mask(miig_rt, slice, slot, mask);
+	rx_class_ft1_cfg_set_type(miig_rt, slice, slot, FT1_CFG_TYPE_EQ);
+
+	/* Enable the FT1 slot in OR enable for all classifiers */
+	for (i = 0; i < ICSSG_NUM_CLASSIFIERS_IN_USE; i++) {
+		val = rx_class_get_or(miig_rt, slice, i);
+		val |= RX_CLASS_FT_FT1_MATCH(slot);
+		rx_class_set_or(miig_rt, slice, i, val);
+	}
+}
+
+/* disable all RX traffic */
+void icssg_class_disable(struct regmap *miig_rt, int slice)
+{
+	u32 data, offset;
+	int n;
+
+	/* Enable RX_L2_G */
+	regmap_update_bits(miig_rt, ICSSG_CFG_OFFSET, ICSSG_CFG_RX_L2_G_EN,
+			   ICSSG_CFG_RX_L2_G_EN);
+
+	for (n = 0; n < ICSSG_NUM_CLASSIFIERS; n++) {
+		/* AND_EN = 0 */
+		rx_class_set_and(miig_rt, slice, n, 0);
+		/* OR_EN = 0 */
+		rx_class_set_or(miig_rt, slice, n, 0);
+
+		/* set CFG1 to OR */
+		rx_class_sel_set_type(miig_rt, slice, n, RX_CLASS_SEL_TYPE_OR);
+
+		/* configure gate */
+		offset = RX_CLASS_GATES_N_REG(slice, n);
+		regmap_read(miig_rt, offset, &data);
+		/* clear class_raw so we go through filters */
+		data &= ~RX_CLASS_GATES_RAW_MASK;
+		/* set allow and phase mask */
+		data |= RX_CLASS_GATES_ALLOW_MASK | RX_CLASS_GATES_PHASE_MASK;
+		regmap_write(miig_rt, offset, data);
+	}
+
+	/* FT1 Disabled */
+	for (n = 0; n < ICSSG_NUM_FT1_SLOTS; n++) {
+		const u8 addr[] = { 0, 0, 0, 0, 0, 0, };
+
+		rx_class_ft1_cfg_set_type(miig_rt, slice, n,
+					  FT1_CFG_TYPE_DISABLED);
+		rx_class_ft1_set_da(miig_rt, slice, n, addr);
+		rx_class_ft1_set_da_mask(miig_rt, slice, n, addr);
+	}
+
+	/* clear CFG2 */
+	regmap_write(miig_rt, offs[slice].rx_class_cfg2, 0);
+}
+EXPORT_SYMBOL_GPL(icssg_class_disable);
+
+void icssg_class_default(struct regmap *miig_rt, int slice, bool allmulti,
+			 bool is_sr1)
+{
+	int num_classifiers = is_sr1 ? ICSSG_NUM_CLASSIFIERS_IN_USE : 1;
+	u32 data;
+	int n;
+
+	/* defaults */
+	icssg_class_disable(miig_rt, slice);
+
+	/* Setup Classifier */
+	for (n = 0; n < num_classifiers; n++) {
+		/* match on Broadcast or MAC_PRU address */
+		data = RX_CLASS_FT_BC | RX_CLASS_FT_DA_P;
+
+		/* multicast */
+		if (allmulti)
+			data |= RX_CLASS_FT_MC;
+
+		rx_class_set_or(miig_rt, slice, n, data);
+
+		/* set CFG1 for OR_OR_AND for classifier */
+		rx_class_sel_set_type(miig_rt, slice, n,
+				      RX_CLASS_SEL_TYPE_OR_OR_AND);
+	}
+
+	/* clear CFG2 */
+	regmap_write(miig_rt, offs[slice].rx_class_cfg2, 0);
+}
+EXPORT_SYMBOL_GPL(icssg_class_default);
+
+void icssg_class_promiscuous_sr1(struct regmap *miig_rt, int slice)
+{
+	u32 data, offset;
+	int n;
+
+	/* defaults */
+	icssg_class_disable(miig_rt, slice);
+
+	/* Setup Classifier */
+	for (n = 0; n < ICSSG_NUM_CLASSIFIERS_IN_USE; n++) {
+		/* set RAW_MASK to bypass filters */
+		offset = RX_CLASS_GATES_N_REG(slice, n);
+		regmap_read(miig_rt, offset, &data);
+		data |= RX_CLASS_GATES_RAW_MASK;
+		regmap_write(miig_rt, offset, data);
+	}
+}
+EXPORT_SYMBOL_GPL(icssg_class_promiscuous_sr1);
+
+void icssg_class_add_mcast_sr1(struct regmap *miig_rt, int slice,
+			       struct net_device *ndev)
+{
+	u8 mask_addr[6] = { 0, 0, 0, 0, 0, 0xff };
+	struct netdev_hw_addr *ha;
+	int slot = 2;
+
+	rx_class_ft1_set_start_len(miig_rt, slice, 0, 6);
+	/* reserve first 2 slots for
+	 *	1) 01-80-C2-00-00-XX Known Service Ethernet Multicast addresses
+	 *	2) 01-00-5e-00-00-XX Local Network Control Block
+	 *			      (224.0.0.0 - 224.0.0.255  (224.0.0/24))
+	 */
+	icssg_class_ft1_add_mcast(miig_rt, slice, 0,
+				  eth_reserved_addr_base, mask_addr);
+	icssg_class_ft1_add_mcast(miig_rt, slice, 1,
+				  eth_ipv4_mcast_addr_base, mask_addr);
+	mask_addr[5] = 0;
+	netdev_for_each_mc_addr(ha, ndev) {
+		/* skip addresses matching reserved slots */
+		if (!memcmp(eth_reserved_addr_base, ha->addr, 5) ||
+		    !memcmp(eth_ipv4_mcast_addr_base, ha->addr, 5)) {
+			netdev_dbg(ndev, "mcast skip %pM\n", ha->addr);
+			continue;
+		}
+
+		if (slot >= FT1_NUM_SLOTS) {
+			netdev_dbg(ndev,
+				   "can't add more than %d MC addresses, enabling allmulti\n",
+				   FT1_NUM_SLOTS);
+			icssg_class_default(miig_rt, slice, 1, true);
+			break;
+		}
+
+		netdev_dbg(ndev, "mcast add %pM\n", ha->addr);
+		icssg_class_ft1_add_mcast(miig_rt, slice, slot,
+					  ha->addr, mask_addr);
+		slot++;
+	}
+}
+EXPORT_SYMBOL_GPL(icssg_class_add_mcast_sr1);
+
+/* required for SAV check */
+void icssg_ft1_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac_addr)
+{
+	const u8 mask_addr[] = { 0, 0, 0, 0, 0, 0, };
+
+	rx_class_ft1_set_start_len(miig_rt, slice, ETH_ALEN, ETH_ALEN);
+	rx_class_ft1_set_da(miig_rt, slice, 0, mac_addr);
+	rx_class_ft1_set_da_mask(miig_rt, slice, 0, mask_addr);
+	rx_class_ft1_cfg_set_type(miig_rt, slice, 0, FT1_CFG_TYPE_EQ);
+}
+EXPORT_SYMBOL_GPL(icssg_ft1_set_mac_addr);
+
+/**
+ * icssg_ft3_hsr_configurations - Configure filter table for HSR/PRP protocol frames
+ * @miig_rt: Pointer to the MII-G register map
+ * @slice: ICSSG slice number (0 or 1)
+ * @prueth: Pointer to prueth structure to determine HSR/PRP mode
+ *
+ * Configures FT3 to detect PTP frames (EtherType 0x88F7) in HSR/PRP tagged packets.
+ * HSR frames have a 6-byte tag, while PRP has no tag offset for EtherType detection.
+ */
+void icssg_ft3_hsr_configurations(struct regmap *miig_rt, int slice,
+				  struct prueth *prueth)
+{
+	u8 offset = (prueth->hsr_prp_version == PRP_V1) ?
+		    PRP_PTP_ETHERTYPE_OFFSET : HSR_PTP_ETHERTYPE_OFFSET;
+
+	regmap_write(miig_rt, FT3_N_REG(slice, FT3_PTP_SLOT, FT3_START), offset);
+	regmap_write(miig_rt, FT3_N_REG(slice, FT3_PTP_SLOT, FT3_START_AUTO), 0);
+	regmap_write(miig_rt, FT3_N_REG(slice, FT3_PTP_SLOT, FT3_START_OFFSET), 0);
+	regmap_write(miig_rt, FT3_N_REG(slice, FT3_PTP_SLOT, FT3_JUMP_OFFSET), 0);
+	regmap_write(miig_rt, FT3_N_REG(slice, FT3_PTP_SLOT, FT3_LEN), 0);
+	regmap_write(miig_rt, FT3_N_REG(slice, FT3_PTP_SLOT, FT3_CFG), FT3_VLAN_MODE_BOTH);
+	regmap_write(miig_rt, FT3_N_REG(slice, FT3_PTP_SLOT, FT3_T), FT3_PTP_PATTERN);
+	regmap_write(miig_rt, FT3_N_REG(slice, FT3_PTP_SLOT, FT3_T_MASK),
+		     FT3_ETHERTYPE_MASK);
+
+	regmap_write(miig_rt, RX_CLASS_N_REG(slice, CLASSIFIER_PTP_DUP, RX_CLASS_AND_EN),
+		     RX_CLASS_DISABLE);
+	regmap_write(miig_rt, RX_CLASS_OR_REG(slice, CLASSIFIER_PTP_DUP, RX_CLASS_AND_EN),
+		     RX_CLASS_OR_DUP_PTP);
+	regmap_write(miig_rt, RX_CLASS_GATES_N_REG(slice, CLASSIFIER_PTP_DUP),
+		     RX_CLASS_GATE_PTP);
+
+	if (prueth->hsr_prp_version != PRP_V1) {
+		regmap_write(miig_rt, RX_CLASS_N_REG(slice, CLASSIFIER_HSR_TAG, RX_CLASS_AND_EN),
+			     RX_CLASS_DISABLE);
+		regmap_write(miig_rt, RX_CLASS_OR_REG(slice, CLASSIFIER_HSR_TAG, RX_CLASS_AND_EN),
+			     RX_CLASS_OR_HSR_TAG);
+		regmap_write(miig_rt, RX_CLASS_GATES_N_REG(slice, CLASSIFIER_HSR_TAG),
+			     RX_CLASS_GATE_PTP);
+	}
+}
+EXPORT_SYMBOL_GPL(icssg_ft3_hsr_configurations);

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_config.c

@@ -0,0 +1,864 @@
+// SPDX-License-Identifier: GPL-2.0
+/* ICSSG Ethernet driver
+ *
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com
+ */
+
+#include <linux/iopoll.h>
+#include <linux/regmap.h>
+#include <uapi/linux/if_ether.h>
+#include "icssg_config.h"
+#include "icssg_prueth.h"
+#include "icssg_switch_map.h"
+#include "icssg_mii_rt.h"
+
+/* TX IPG Values to be set for 100M link speed. These values are
+ * in ocp_clk cycles. So need change if ocp_clk is changed for a specific
+ * h/w design.
+ */
+
+/* IPG is in core_clk cycles */
+#define MII_RT_TX_IPG_100M	0x17
+#define MII_RT_TX_IPG_1G	0xb
+#define MII_RT_TX_IPG_100M_SR1	0x166
+#define MII_RT_TX_IPG_1G_SR1	0x1a
+
+#define	ICSSG_QUEUES_MAX		64
+#define	ICSSG_QUEUE_OFFSET		0xd00
+#define	ICSSG_QUEUE_PEEK_OFFSET		0xe00
+#define	ICSSG_QUEUE_CNT_OFFSET		0xe40
+#define	ICSSG_QUEUE_RESET_OFFSET	0xf40
+
+#define	ICSSG_NUM_TX_QUEUES	8
+
+#define	RECYCLE_Q_SLICE0	16
+#define	RECYCLE_Q_SLICE1	17
+
+#define	ICSSG_NUM_OTHER_QUEUES	5	/* port, host and special queues */
+
+#define	PORT_HI_Q_SLICE0	32
+#define	PORT_LO_Q_SLICE0	33
+#define	HOST_HI_Q_SLICE0	34
+#define	HOST_LO_Q_SLICE0	35
+#define	HOST_SPL_Q_SLICE0	40	/* Special Queue */
+
+#define	PORT_HI_Q_SLICE1	36
+#define	PORT_LO_Q_SLICE1	37
+#define	HOST_HI_Q_SLICE1	38
+#define	HOST_LO_Q_SLICE1	39
+#define	HOST_SPL_Q_SLICE1	41	/* Special Queue */
+
+#define MII_RXCFG_DEFAULT	(PRUSS_MII_RT_RXCFG_RX_ENABLE | \
+				 PRUSS_MII_RT_RXCFG_RX_DATA_RDY_MODE_DIS | \
+				 PRUSS_MII_RT_RXCFG_RX_L2_EN | \
+				 PRUSS_MII_RT_RXCFG_RX_L2_EOF_SCLR_DIS)
+
+#define MII_TXCFG_DEFAULT	(PRUSS_MII_RT_TXCFG_TX_ENABLE | \
+				 PRUSS_MII_RT_TXCFG_TX_AUTO_PREAMBLE | \
+				 PRUSS_MII_RT_TXCFG_TX_32_MODE_EN | \
+				 PRUSS_MII_RT_TXCFG_TX_IPG_WIRE_CLK_EN)
+
+#define ICSSG_CFG_DEFAULT	(ICSSG_CFG_TX_L1_EN | \
+				 ICSSG_CFG_TX_L2_EN | ICSSG_CFG_RX_L2_G_EN | \
+				 ICSSG_CFG_TX_PRU_EN | \
+				 ICSSG_CFG_SGMII_MODE)
+
+#define FDB_GEN_CFG1		0x60
+#define SMEM_VLAN_OFFSET	8
+#define SMEM_VLAN_OFFSET_MASK	GENMASK(25, 8)
+#define FDB_HASH_SIZE_MASK	GENMASK(6, 3)
+#define FDB_HASH_SIZE_SHIFT	3
+#define FDB_HASH_SIZE		3
+
+#define FDB_GEN_CFG2		0x64
+#define FDB_VLAN_EN		BIT(6)
+#define FDB_HOST_EN		BIT(2)
+#define FDB_PRU1_EN		BIT(1)
+#define FDB_PRU0_EN		BIT(0)
+#define FDB_EN_ALL		(FDB_PRU0_EN | FDB_PRU1_EN | \
+				 FDB_HOST_EN | FDB_VLAN_EN)
+
+/**
+ * struct map - ICSSG Queue Map
+ * @queue: Queue number
+ * @pd_addr_start: Packet descriptor queue reserved memory
+ * @flags: Flags
+ * @special: Indicates whether this queue is a special queue or not
+ */
+struct map {
+	int queue;
+	u32 pd_addr_start;
+	u32 flags;
+	bool special;
+};
+
+/* Hardware queue map for ICSSG */
+static const struct map hwq_map[2][ICSSG_NUM_OTHER_QUEUES] = {
+	{
+		{ PORT_HI_Q_SLICE0, PORT_DESC0_HI, 0x200000, 0 },
+		{ PORT_LO_Q_SLICE0, PORT_DESC0_LO, 0, 0 },
+		{ HOST_HI_Q_SLICE0, HOST_DESC0_HI, 0x200000, 0 },
+		{ HOST_LO_Q_SLICE0, HOST_DESC0_LO, 0, 0 },
+		{ HOST_SPL_Q_SLICE0, HOST_SPPD0, 0x400000, 1 },
+	},
+	{
+		{ PORT_HI_Q_SLICE1, PORT_DESC1_HI, 0xa00000, 0 },
+		{ PORT_LO_Q_SLICE1, PORT_DESC1_LO, 0x800000, 0 },
+		{ HOST_HI_Q_SLICE1, HOST_DESC1_HI, 0xa00000, 0 },
+		{ HOST_LO_Q_SLICE1, HOST_DESC1_LO, 0x800000, 0 },
+		{ HOST_SPL_Q_SLICE1, HOST_SPPD1, 0xc00000, 1 },
+	},
+};
+
+static void icssg_config_mii_init_fw_offload(struct prueth_emac *emac)
+{
+	struct prueth *prueth = emac->prueth;
+	int mii = prueth_emac_slice(emac);
+	u32 txcfg_reg, pcnt_reg, txcfg;
+	struct regmap *mii_rt;
+
+	mii_rt = prueth->mii_rt;
+
+	txcfg_reg = (mii == ICSS_MII0) ? PRUSS_MII_RT_TXCFG0 :
+				       PRUSS_MII_RT_TXCFG1;
+	pcnt_reg = (mii == ICSS_MII0) ? PRUSS_MII_RT_RX_PCNT0 :
+				       PRUSS_MII_RT_RX_PCNT1;
+
+	txcfg = PRUSS_MII_RT_TXCFG_TX_ENABLE |
+		PRUSS_MII_RT_TXCFG_TX_AUTO_PREAMBLE |
+		PRUSS_MII_RT_TXCFG_TX_IPG_WIRE_CLK_EN;
+
+	if (emac->phy_if == PHY_INTERFACE_MODE_MII && mii == ICSS_MII1)
+		txcfg |= PRUSS_MII_RT_TXCFG_TX_MUX_SEL;
+	else if (emac->phy_if != PHY_INTERFACE_MODE_MII && mii == ICSS_MII0)
+		txcfg |= PRUSS_MII_RT_TXCFG_TX_MUX_SEL;
+
+	regmap_write(mii_rt, txcfg_reg, txcfg);
+	regmap_write(mii_rt, pcnt_reg, 0x1);
+}
+
+static void icssg_config_mii_init(struct prueth_emac *emac)
+{
+	struct prueth *prueth = emac->prueth;
+	int slice = prueth_emac_slice(emac);
+	u32 txcfg, txcfg_reg, pcnt_reg;
+	struct regmap *mii_rt;
+
+	mii_rt = prueth->mii_rt;
+
+	txcfg_reg = (slice == ICSS_MII0) ? PRUSS_MII_RT_TXCFG0 :
+				       PRUSS_MII_RT_TXCFG1;
+	pcnt_reg = (slice == ICSS_MII0) ? PRUSS_MII_RT_RX_PCNT0 :
+				       PRUSS_MII_RT_RX_PCNT1;
+
+	txcfg = MII_TXCFG_DEFAULT;
+
+	/* In MII mode TX lines swapped inside ICSSG, so TX_MUX_SEL cfg need
+	 * to be swapped also comparing to RGMII mode.
+	 */
+	if (emac->phy_if == PHY_INTERFACE_MODE_MII && slice == ICSS_MII0)
+		txcfg |= PRUSS_MII_RT_TXCFG_TX_MUX_SEL;
+	else if (emac->phy_if != PHY_INTERFACE_MODE_MII && slice == ICSS_MII1)
+		txcfg |= PRUSS_MII_RT_TXCFG_TX_MUX_SEL;
+
+	regmap_write(mii_rt, txcfg_reg, txcfg);
+	regmap_write(mii_rt, pcnt_reg, 0x1);
+}
+
+static void icssg_miig_queues_init(struct prueth *prueth, int slice)
+{
+	struct regmap *miig_rt = prueth->miig_rt;
+	void __iomem *smem = prueth->shram.va;
+	u8 pd[ICSSG_SPECIAL_PD_SIZE];
+	int queue = 0, i, j;
+	u32 *pdword;
+
+	/* reset hwqueues */
+	if (slice)
+		queue = ICSSG_NUM_TX_QUEUES;
+
+	for (i = 0; i < ICSSG_NUM_TX_QUEUES; i++) {
+		regmap_write(miig_rt, ICSSG_QUEUE_RESET_OFFSET, queue);
+		queue++;
+	}
+
+	queue = slice ? RECYCLE_Q_SLICE1 : RECYCLE_Q_SLICE0;
+	regmap_write(miig_rt, ICSSG_QUEUE_RESET_OFFSET, queue);
+
+	for (i = 0; i < ICSSG_NUM_OTHER_QUEUES; i++) {
+		regmap_write(miig_rt, ICSSG_QUEUE_RESET_OFFSET,
+			     hwq_map[slice][i].queue);
+	}
+
+	/* initialize packet descriptors in SMEM */
+	/* push pakcet descriptors to hwqueues */
+
+	pdword = (u32 *)pd;
+	for (j = 0; j < ICSSG_NUM_OTHER_QUEUES; j++) {
+		const struct map *mp;
+		int pd_size, num_pds;
+		u32 pdaddr;
+
+		mp = &hwq_map[slice][j];
+		if (mp->special) {
+			pd_size = ICSSG_SPECIAL_PD_SIZE;
+			num_pds = ICSSG_NUM_SPECIAL_PDS;
+		} else	{
+			pd_size = ICSSG_NORMAL_PD_SIZE;
+			num_pds = ICSSG_NUM_NORMAL_PDS;
+		}
+
+		for (i = 0; i < num_pds; i++) {
+			memset(pd, 0, pd_size);
+
+			pdword[0] &= ICSSG_FLAG_MASK;
+			pdword[0] |= mp->flags;
+			pdaddr = mp->pd_addr_start + i * pd_size;
+
+			memcpy_toio(smem + pdaddr, pd, pd_size);
+			queue = mp->queue;
+			regmap_write(miig_rt, ICSSG_QUEUE_OFFSET + 4 * queue,
+				     pdaddr);
+		}
+	}
+}
+
+void icssg_config_ipg(struct prueth_emac *emac)
+{
+	struct prueth *prueth = emac->prueth;
+	int slice = prueth_emac_slice(emac);
+	u32 ipg;
+
+	switch (emac->speed) {
+	case SPEED_1000:
+		ipg = emac->is_sr1 ? MII_RT_TX_IPG_1G_SR1 : MII_RT_TX_IPG_1G;
+		break;
+	case SPEED_100:
+		ipg = emac->is_sr1 ? MII_RT_TX_IPG_100M_SR1 : MII_RT_TX_IPG_100M;
+		break;
+	case SPEED_10:
+		/* Firmware hardcodes IPG for SR1.0 */
+		if (emac->is_sr1)
+			return;
+		/* IPG for 10M is same as 100M */
+		ipg = MII_RT_TX_IPG_100M;
+		break;
+	default:
+		/* Other links speeds not supported */
+		netdev_err(emac->ndev, "Unsupported link speed\n");
+		return;
+	}
+
+	icssg_mii_update_ipg(prueth->mii_rt, slice, ipg);
+}
+EXPORT_SYMBOL_GPL(icssg_config_ipg);
+
+static void emac_r30_cmd_init(struct prueth_emac *emac)
+{
+	struct icssg_r30_cmd __iomem *p;
+	int i;
+
+	p = emac->dram.va + MGR_R30_CMD_OFFSET;
+
+	for (i = 0; i < 4; i++)
+		writel(EMAC_NONE, &p->cmd[i]);
+}
+
+static int emac_r30_is_done(struct prueth_emac *emac)
+{
+	const struct icssg_r30_cmd __iomem *p;
+	u32 cmd;
+	int i;
+
+	p = emac->dram.va + MGR_R30_CMD_OFFSET;
+
+	for (i = 0; i < 4; i++) {
+		cmd = readl(&p->cmd[i]);
+		if (cmd != EMAC_NONE)
+			return 0;
+	}
+
+	return 1;
+}
+
+static int prueth_fw_offload_buffer_setup(struct prueth_emac *emac)
+{
+	struct icssg_buffer_pool_cfg __iomem *bpool_cfg;
+	struct icssg_rxq_ctx __iomem *rxq_ctx;
+	struct prueth *prueth = emac->prueth;
+	int slice = prueth_emac_slice(emac);
+	u32 addr;
+	int i;
+
+	addr = lower_32_bits(prueth->msmcram.pa);
+	if (slice) {
+		if (prueth->pdata.banked_ms_ram)
+			addr += MSMC_RAM_BANK_SIZE;
+		else
+			addr += PRUETH_SW_TOTAL_BUF_SIZE_PER_SLICE;
+	}
+
+	if (addr % SZ_64K) {
+		dev_warn(prueth->dev, "buffer pool needs to be 64KB aligned\n");
+		return -EINVAL;
+	}
+
+	bpool_cfg = emac->dram.va + BUFFER_POOL_0_ADDR_OFFSET;
+
+	/* Configure buffer pools for forwarding buffers
+	 * - used by firmware to store packets to be forwarded to other port
+	 * - 8 total pools per slice
+	 */
+	for (i = 0; i <  PRUETH_NUM_FWD_BUF_POOLS_PER_SLICE; i++) {
+		writel(addr, &bpool_cfg[i].addr);
+		writel(PRUETH_SW_FWD_BUF_POOL_SIZE, &bpool_cfg[i].len);
+		addr += PRUETH_SW_FWD_BUF_POOL_SIZE;
+	}
+
+	/* Configure buffer pools for Local Injection buffers
+	 *  - used by firmware to store packets received from host core
+	 *  - 16 total pools per slice
+	 */
+	for (i = 0; i < PRUETH_NUM_LI_BUF_POOLS_PER_SLICE; i++) {
+		int cfg_idx = i + PRUETH_NUM_FWD_BUF_POOLS_PER_SLICE;
+
+		/* The driver only uses first 4 queues per PRU,
+		 * so only initialize buffer for them
+		 */
+		if ((i % PRUETH_NUM_LI_BUF_POOLS_PER_PORT_PER_SLICE)
+			 < PRUETH_SW_USED_LI_BUF_POOLS_PER_PORT_PER_SLICE) {
+			writel(addr, &bpool_cfg[cfg_idx].addr);
+			writel(PRUETH_SW_LI_BUF_POOL_SIZE,
+			       &bpool_cfg[cfg_idx].len);
+			addr += PRUETH_SW_LI_BUF_POOL_SIZE;
+		} else {
+			writel(0, &bpool_cfg[cfg_idx].addr);
+			writel(0, &bpool_cfg[cfg_idx].len);
+		}
+	}
+
+	/* Express RX buffer queue
+	 *  - used by firmware to store express packets to be transmitted
+	 *    to the host core
+	 */
+	rxq_ctx = emac->dram.va + HOST_RX_Q_EXP_CONTEXT_OFFSET;
+	for (i = 0; i < 3; i++)
+		writel(addr, &rxq_ctx->start[i]);
+
+	addr += PRUETH_SW_HOST_EXP_BUF_POOL_SIZE;
+	writel(addr, &rxq_ctx->end);
+
+	/* Pre-emptible RX buffer queue
+	 *  - used by firmware to store preemptible packets to be transmitted
+	 *    to the host core
+	 */
+	rxq_ctx = emac->dram.va + HOST_RX_Q_PRE_CONTEXT_OFFSET;
+	for (i = 0; i < 3; i++)
+		writel(addr, &rxq_ctx->start[i]);
+
+	addr += PRUETH_SW_HOST_PRE_BUF_POOL_SIZE;
+	writel(addr, &rxq_ctx->end);
+
+	/* Set pointer for default dropped packet write
+	 *  - used by firmware to temporarily store packet to be dropped
+	 */
+	rxq_ctx = emac->dram.va + DEFAULT_MSMC_Q_OFFSET;
+	writel(addr, &rxq_ctx->start[0]);
+
+	return 0;
+}
+
+static int prueth_emac_buffer_setup(struct prueth_emac *emac)
+{
+	struct icssg_buffer_pool_cfg __iomem *bpool_cfg;
+	struct icssg_rxq_ctx __iomem *rxq_ctx;
+	struct prueth *prueth = emac->prueth;
+	int slice = prueth_emac_slice(emac);
+	u32 addr;
+	int i;
+
+	addr = lower_32_bits(prueth->msmcram.pa);
+	if (slice) {
+		if (prueth->pdata.banked_ms_ram)
+			addr += MSMC_RAM_BANK_SIZE;
+		else
+			addr += PRUETH_EMAC_TOTAL_BUF_SIZE_PER_SLICE;
+	}
+
+	if (addr % SZ_64K) {
+		dev_warn(prueth->dev, "buffer pool needs to be 64KB aligned\n");
+		return -EINVAL;
+	}
+
+	bpool_cfg = emac->dram.va + BUFFER_POOL_0_ADDR_OFFSET;
+
+	/* Configure buffer pools for forwarding buffers
+	 *  - in mac mode - no forwarding so initialize all pools to 0
+	 *  - 8 total pools per slice
+	 */
+	for (i = 0; i <  PRUETH_NUM_FWD_BUF_POOLS_PER_SLICE; i++) {
+		writel(0, &bpool_cfg[i].addr);
+		writel(0, &bpool_cfg[i].len);
+	}
+
+	/* Configure buffer pools for Local Injection buffers
+	 *  - used by firmware to store packets received from host core
+	 *  - 16 total pools per slice
+	 */
+	bpool_cfg = emac->dram.va + BUFFER_POOL_0_ADDR_OFFSET;
+	for (i = 0; i < PRUETH_NUM_LI_BUF_POOLS_PER_SLICE; i++) {
+		int cfg_idx = i + PRUETH_NUM_FWD_BUF_POOLS_PER_SLICE;
+
+		/* In EMAC mode, only first 4 buffers are used,
+		 * as 1 slice needs to handle only 1 port
+		 */
+		if (i < PRUETH_EMAC_USED_LI_BUF_POOLS_PER_PORT_PER_SLICE) {
+			writel(addr, &bpool_cfg[cfg_idx].addr);
+			writel(PRUETH_EMAC_LI_BUF_POOL_SIZE,
+			       &bpool_cfg[cfg_idx].len);
+			addr += PRUETH_EMAC_LI_BUF_POOL_SIZE;
+		} else {
+			writel(0, &bpool_cfg[cfg_idx].addr);
+			writel(0, &bpool_cfg[cfg_idx].len);
+		}
+	}
+
+	/* Express RX buffer queue
+	 *  - used by firmware to store express packets to be transmitted
+	 *    to host core
+	 */
+	rxq_ctx = emac->dram.va + HOST_RX_Q_EXP_CONTEXT_OFFSET;
+	for (i = 0; i < 3; i++)
+		writel(addr, &rxq_ctx->start[i]);
+
+	addr += PRUETH_EMAC_HOST_EXP_BUF_POOL_SIZE;
+	writel(addr, &rxq_ctx->end);
+
+	/* Pre-emptible RX buffer queue
+	 *  - used by firmware to store preemptible packets to be transmitted
+	 *    to host core
+	 */
+	rxq_ctx = emac->dram.va + HOST_RX_Q_PRE_CONTEXT_OFFSET;
+	for (i = 0; i < 3; i++)
+		writel(addr, &rxq_ctx->start[i]);
+
+	addr += PRUETH_EMAC_HOST_PRE_BUF_POOL_SIZE;
+	writel(addr, &rxq_ctx->end);
+
+	/* Set pointer for default dropped packet write
+	 *  - used by firmware to temporarily store packet to be dropped
+	 */
+	rxq_ctx = emac->dram.va + DEFAULT_MSMC_Q_OFFSET;
+	writel(addr, &rxq_ctx->start[0]);
+
+	return 0;
+}
+
+void icssg_init_emac_mode(struct prueth *prueth)
+{
+	/* When the device is configured as a bridge and it is being brought
+	 * back to the emac mode, the host mac address has to be set as 0.
+	 */
+	u32 addr = prueth->shram.pa + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET;
+	int i;
+	u8 mac[ETH_ALEN] = { 0 };
+
+	/* Set VLAN TABLE address base */
+	regmap_update_bits(prueth->miig_rt, FDB_GEN_CFG1, SMEM_VLAN_OFFSET_MASK,
+			   addr <<  SMEM_VLAN_OFFSET);
+	regmap_update_bits(prueth->miig_rt, FDB_GEN_CFG1, FDB_HASH_SIZE_MASK,
+			   FDB_HASH_SIZE << FDB_HASH_SIZE_SHIFT);
+	/* Set enable VLAN aware mode, and FDBs for all PRUs */
+	regmap_write(prueth->miig_rt, FDB_GEN_CFG2, (FDB_PRU0_EN | FDB_PRU1_EN | FDB_HOST_EN));
+	prueth->vlan_tbl = (struct prueth_vlan_tbl __force *)(prueth->shram.va +
+			    EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET);
+	for (i = 0; i < SZ_4K - 1; i++) {
+		prueth->vlan_tbl[i].fid = i;
+		prueth->vlan_tbl[i].fid_c1 = 0;
+	}
+	/* Clear host MAC address */
+	icssg_class_set_host_mac_addr(prueth->miig_rt, mac);
+}
+EXPORT_SYMBOL_GPL(icssg_init_emac_mode);
+
+void icssg_init_fw_offload_mode(struct prueth *prueth)
+{
+	u32 addr = prueth->shram.pa + EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET;
+	int i;
+
+	/* Set VLAN TABLE address base */
+	regmap_update_bits(prueth->miig_rt, FDB_GEN_CFG1, SMEM_VLAN_OFFSET_MASK,
+			   addr <<  SMEM_VLAN_OFFSET);
+	regmap_update_bits(prueth->miig_rt, FDB_GEN_CFG1, FDB_HASH_SIZE_MASK,
+			   FDB_HASH_SIZE << FDB_HASH_SIZE_SHIFT);
+	/* Set enable VLAN aware mode, and FDBs for all PRUs */
+	regmap_write(prueth->miig_rt, FDB_GEN_CFG2, FDB_EN_ALL);
+	prueth->vlan_tbl = (struct prueth_vlan_tbl __force *)(prueth->shram.va +
+			    EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET);
+	for (i = 0; i < SZ_4K - 1; i++) {
+		prueth->vlan_tbl[i].fid = i;
+		prueth->vlan_tbl[i].fid_c1 = 0;
+	}
+
+	if (prueth->hw_bridge_dev)
+		icssg_class_set_host_mac_addr(prueth->miig_rt, prueth->hw_bridge_dev->dev_addr);
+	icssg_set_pvid(prueth, prueth->default_vlan, PRUETH_PORT_HOST);
+}
+EXPORT_SYMBOL_GPL(icssg_init_fw_offload_mode);
+
+int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice)
+{
+	void __iomem *config = emac->dram.va + ICSSG_CONFIG_OFFSET;
+	struct icssg_flow_cfg __iomem *flow_cfg;
+	int ret;
+
+	memset_io(config, 0, TAS_GATE_MASK_LIST0);
+	icssg_miig_queues_init(prueth, slice);
+
+	emac->speed = SPEED_1000;
+	emac->duplex = DUPLEX_FULL;
+	if (!phy_interface_mode_is_rgmii(emac->phy_if)) {
+		emac->speed = SPEED_100;
+		emac->duplex = DUPLEX_FULL;
+	}
+	regmap_update_bits(prueth->miig_rt, ICSSG_CFG_OFFSET,
+			   ICSSG_CFG_DEFAULT, ICSSG_CFG_DEFAULT);
+	icssg_miig_set_interface_mode(prueth->miig_rt, slice, emac->phy_if);
+	if (prueth->is_switch_mode || prueth->is_hsr_offload_mode)
+		icssg_config_mii_init_fw_offload(emac);
+	else
+		icssg_config_mii_init(emac);
+	icssg_config_ipg(emac);
+	icssg_update_rgmii_cfg(prueth->miig_rt, emac);
+
+	/* set GPI mode */
+	pruss_cfg_gpimode(prueth->pruss, prueth->pru_id[slice],
+			  PRUSS_GPI_MODE_MII);
+
+	/* enable XFR shift for PRU and RTU */
+	pruss_cfg_xfr_enable(prueth->pruss, PRU_TYPE_PRU, true);
+	pruss_cfg_xfr_enable(prueth->pruss, PRU_TYPE_RTU, true);
+
+	/* set C28 to 0x100 */
+	pru_rproc_set_ctable(prueth->pru[slice], PRU_C28, 0x100 << 8);
+	pru_rproc_set_ctable(prueth->rtu[slice], PRU_C28, 0x100 << 8);
+	pru_rproc_set_ctable(prueth->txpru[slice], PRU_C28, 0x100 << 8);
+
+	flow_cfg = config + PSI_L_REGULAR_FLOW_ID_BASE_OFFSET;
+	writew(emac->rx_flow_id_base, &flow_cfg->rx_base_flow);
+	writew(0, &flow_cfg->mgm_base_flow);
+	writeb(0, config + SPL_PKT_DEFAULT_PRIORITY);
+	writeb(0, config + QUEUE_NUM_UNTAGGED);
+
+	if (prueth->is_switch_mode || prueth->is_hsr_offload_mode)
+		ret = prueth_fw_offload_buffer_setup(emac);
+	else
+		ret = prueth_emac_buffer_setup(emac);
+	if (ret)
+		return ret;
+
+	emac_r30_cmd_init(emac);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(icssg_config);
+
+/* Bitmask for ICSSG r30 commands */
+static const struct icssg_r30_cmd emac_r32_bitmask[] = {
+	{{0xffff0004, 0xffff0100, 0xffff0004, EMAC_NONE}},	/* EMAC_PORT_DISABLE */
+	{{0xfffb0040, 0xfeff0200, 0xfeff0200, EMAC_NONE}},	/* EMAC_PORT_BLOCK */
+	{{0xffbb0000, 0xfcff0000, 0xdcfb0000, EMAC_NONE}},	/* EMAC_PORT_FORWARD */
+	{{0xffbb0000, 0xfcff0000, 0xfcff2000, EMAC_NONE}},	/* EMAC_PORT_FORWARD_WO_LEARNING */
+	{{0xffff0001, EMAC_NONE,  EMAC_NONE, EMAC_NONE}},	/* ACCEPT ALL */
+	{{0xfffe0002, EMAC_NONE,  EMAC_NONE, EMAC_NONE}},	/* ACCEPT TAGGED */
+	{{0xfffc0000, EMAC_NONE,  EMAC_NONE, EMAC_NONE}},	/* ACCEPT UNTAGGED and PRIO */
+	{{EMAC_NONE,  0xffff0020, EMAC_NONE, EMAC_NONE}},	/* TAS Trigger List change */
+	{{EMAC_NONE,  0xdfff1000, EMAC_NONE, EMAC_NONE}},	/* TAS set state ENABLE*/
+	{{EMAC_NONE,  0xefff2000, EMAC_NONE, EMAC_NONE}},	/* TAS set state RESET*/
+	{{EMAC_NONE,  0xcfff0000, EMAC_NONE, EMAC_NONE}},	/* TAS set state DISABLE*/
+	{{EMAC_NONE,  EMAC_NONE,  0xffff0400, EMAC_NONE}},	/* UC flooding ENABLE*/
+	{{EMAC_NONE,  EMAC_NONE,  0xfbff0000, EMAC_NONE}},	/* UC flooding DISABLE*/
+	{{EMAC_NONE,  EMAC_NONE,  0xffff0800, EMAC_NONE}},	/* MC flooding ENABLE*/
+	{{EMAC_NONE,  EMAC_NONE,  0xf7ff0000, EMAC_NONE}},	/* MC flooding DISABLE*/
+	{{EMAC_NONE,  0xffff4000, EMAC_NONE, EMAC_NONE}},	/* Preemption on Tx ENABLE*/
+	{{EMAC_NONE,  0xbfff0000, EMAC_NONE, EMAC_NONE}},	/* Preemption on Tx DISABLE*/
+	{{0xffff0010,  EMAC_NONE, 0xffff0010, EMAC_NONE}},	/* VLAN AWARE*/
+	{{0xffef0000,  EMAC_NONE, 0xffef0000, EMAC_NONE}},	/* VLAN UNWARE*/
+	{{0xffff2000, EMAC_NONE, EMAC_NONE, EMAC_NONE}},	/* HSR_RX_OFFLOAD_ENABLE */
+	{{0xdfff0000, EMAC_NONE, EMAC_NONE, EMAC_NONE}}		/* HSR_RX_OFFLOAD_DISABLE */
+};
+
+int icssg_set_port_state(struct prueth_emac *emac,
+			 enum icssg_port_state_cmd cmd)
+{
+	struct icssg_r30_cmd __iomem *p;
+	int ret = -ETIMEDOUT;
+	int done = 0;
+	int i;
+
+	p = emac->dram.va + MGR_R30_CMD_OFFSET;
+
+	if (cmd >= ICSSG_EMAC_PORT_MAX_COMMANDS) {
+		netdev_err(emac->ndev, "invalid port command\n");
+		return -EINVAL;
+	}
+
+	/* only one command at a time allowed to firmware */
+	mutex_lock(&emac->cmd_lock);
+
+	for (i = 0; i < 4; i++)
+		writel(emac_r32_bitmask[cmd].cmd[i], &p->cmd[i]);
+
+	/* wait for done */
+	ret = read_poll_timeout(emac_r30_is_done, done, done == 1,
+				1000, 10000, false, emac);
+
+	if (ret == -ETIMEDOUT)
+		netdev_err(emac->ndev, "timeout waiting for command done\n");
+
+	mutex_unlock(&emac->cmd_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(icssg_set_port_state);
+
+void icssg_config_half_duplex(struct prueth_emac *emac)
+{
+	u32 val;
+
+	if (!emac->half_duplex)
+		return;
+
+	val = get_random_u32();
+	writel(val, emac->dram.va + HD_RAND_SEED_OFFSET);
+}
+EXPORT_SYMBOL_GPL(icssg_config_half_duplex);
+
+void icssg_config_set_speed(struct prueth_emac *emac)
+{
+	u8 fw_speed;
+
+	switch (emac->speed) {
+	case SPEED_1000:
+		fw_speed = FW_LINK_SPEED_1G;
+		break;
+	case SPEED_100:
+		fw_speed = FW_LINK_SPEED_100M;
+		break;
+	case SPEED_10:
+		fw_speed = FW_LINK_SPEED_10M;
+		break;
+	default:
+		/* Other links speeds not supported */
+		netdev_err(emac->ndev, "Unsupported link speed\n");
+		return;
+	}
+
+	if (emac->duplex == DUPLEX_HALF)
+		fw_speed |= FW_LINK_SPEED_HD;
+
+	writeb(fw_speed, emac->dram.va + PORT_LINK_SPEED_OFFSET);
+}
+EXPORT_SYMBOL_GPL(icssg_config_set_speed);
+
+int icssg_send_fdb_msg(struct prueth_emac *emac, struct mgmt_cmd *cmd,
+		       struct mgmt_cmd_rsp *rsp)
+{
+	struct prueth *prueth = emac->prueth;
+	int slice = prueth_emac_slice(emac);
+	int addr, ret;
+
+	addr = icssg_queue_pop(prueth, slice == 0 ?
+			       ICSSG_CMD_POP_SLICE0 : ICSSG_CMD_POP_SLICE1);
+	if (addr < 0)
+		return addr;
+
+	/* First 4 bytes have FW owned buffer linking info which should
+	 * not be touched
+	 */
+	memcpy_toio(prueth->shram.va + addr + 4, cmd, sizeof(*cmd));
+	icssg_queue_push(prueth, slice == 0 ?
+			 ICSSG_CMD_PUSH_SLICE0 : ICSSG_CMD_PUSH_SLICE1, addr);
+	ret = read_poll_timeout(icssg_queue_pop, addr, addr >= 0,
+				2000, 20000000, false, prueth, slice == 0 ?
+				ICSSG_RSP_POP_SLICE0 : ICSSG_RSP_POP_SLICE1);
+	if (ret) {
+		netdev_err(emac->ndev, "Timedout sending HWQ message\n");
+		return ret;
+	}
+
+	memcpy_fromio(rsp, prueth->shram.va + addr, sizeof(*rsp));
+	/* Return buffer back for to pool */
+	icssg_queue_push(prueth, slice == 0 ?
+			 ICSSG_RSP_PUSH_SLICE0 : ICSSG_RSP_PUSH_SLICE1, addr);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(icssg_send_fdb_msg);
+
+static void icssg_fdb_setup(struct prueth_emac *emac, struct mgmt_cmd *fdb_cmd,
+			    const unsigned char *addr, u8 fid, int cmd)
+{
+	int slice = prueth_emac_slice(emac);
+	u8 mac_fid[ETH_ALEN + 2];
+	u16 fdb_slot;
+
+	ether_addr_copy(mac_fid, addr);
+
+	/* 1-1 VID-FID mapping is already setup */
+	mac_fid[ETH_ALEN] = fid;
+	mac_fid[ETH_ALEN + 1] = 0;
+
+	fdb_slot = bitrev32(crc32_le(0, mac_fid, 8)) & PRUETH_SWITCH_FDB_MASK;
+
+	fdb_cmd->header = ICSSG_FW_MGMT_CMD_HEADER;
+	fdb_cmd->type   = ICSSG_FW_MGMT_FDB_CMD_TYPE;
+	fdb_cmd->seqnum = ++(emac->prueth->icssg_hwcmdseq);
+	fdb_cmd->param  = cmd;
+	fdb_cmd->param |= (slice << 4);
+
+	memcpy(&fdb_cmd->cmd_args[0], addr, 4);
+	memcpy(&fdb_cmd->cmd_args[1], &addr[4], 2);
+	fdb_cmd->cmd_args[2] = fdb_slot;
+
+	netdev_dbg(emac->ndev, "MAC %pM slot %X FID %X\n", addr, fdb_slot, fid);
+}
+
+int icssg_fdb_add_del(struct prueth_emac *emac, const unsigned char *addr,
+		      u8 vid, u8 fid_c2, bool add)
+{
+	struct mgmt_cmd_rsp fdb_cmd_rsp = { 0 };
+	struct mgmt_cmd fdb_cmd = { 0 };
+	u8 fid = vid;
+	int ret;
+
+	icssg_fdb_setup(emac, &fdb_cmd, addr, fid, add ? ICSS_CMD_ADD_FDB : ICSS_CMD_DEL_FDB);
+
+	fid_c2 |= ICSSG_FDB_ENTRY_VALID;
+	fdb_cmd.cmd_args[1] |= ((fid << 16) | (fid_c2 << 24));
+
+	ret = icssg_send_fdb_msg(emac, &fdb_cmd, &fdb_cmd_rsp);
+	if (ret)
+		return ret;
+
+	WARN_ON(fdb_cmd.seqnum != fdb_cmd_rsp.seqnum);
+	if (fdb_cmd_rsp.status == 1)
+		return 0;
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(icssg_fdb_add_del);
+
+int icssg_fdb_lookup(struct prueth_emac *emac, const unsigned char *addr,
+		     u8 vid)
+{
+	struct mgmt_cmd_rsp fdb_cmd_rsp = { 0 };
+	struct mgmt_cmd fdb_cmd = { 0 };
+	struct prueth_fdb_slot *slot;
+	u8 fid = vid;
+	int ret, i;
+
+	icssg_fdb_setup(emac, &fdb_cmd, addr, fid, ICSS_CMD_GET_FDB_SLOT);
+
+	fdb_cmd.cmd_args[1] |= fid << 16;
+
+	ret = icssg_send_fdb_msg(emac, &fdb_cmd, &fdb_cmd_rsp);
+	if (ret)
+		return ret;
+
+	WARN_ON(fdb_cmd.seqnum != fdb_cmd_rsp.seqnum);
+
+	slot = (struct prueth_fdb_slot __force *)(emac->dram.va + FDB_CMD_BUFFER);
+	for (i = 0; i < 4; i++) {
+		if (ether_addr_equal(addr, slot->mac) && vid == slot->fid)
+			return (slot->fid_c2 & ~ICSSG_FDB_ENTRY_VALID);
+		slot++;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(icssg_fdb_lookup);
+
+void icssg_vtbl_modify(struct prueth_emac *emac, u8 vid, u8 port_mask,
+		       u8 untag_mask, bool add)
+{
+	struct prueth *prueth = emac->prueth;
+	struct prueth_vlan_tbl *tbl;
+	u8 fid_c1;
+
+	tbl = prueth->vlan_tbl;
+	spin_lock(&prueth->vtbl_lock);
+	fid_c1 = tbl[vid].fid_c1;
+
+	/* FID_C1: bit0..2 port membership mask,
+	 * bit3..5 tagging mask for each port
+	 * bit6 Stream VID (not handled currently)
+	 * bit7 MC flood (not handled currently)
+	 */
+	if (add) {
+		fid_c1 |= (port_mask | port_mask << 3);
+		fid_c1 &= ~(untag_mask << 3);
+	} else {
+		fid_c1 &= ~(port_mask | port_mask << 3);
+	}
+
+	tbl[vid].fid_c1 = fid_c1;
+	spin_unlock(&prueth->vtbl_lock);
+}
+EXPORT_SYMBOL_GPL(icssg_vtbl_modify);
+
+u16 icssg_get_pvid(struct prueth_emac *emac)
+{
+	struct prueth *prueth = emac->prueth;
+	u32 pvid;
+
+	if (emac->port_id == PRUETH_PORT_MII0)
+		pvid = readl(prueth->shram.va + EMAC_ICSSG_SWITCH_PORT1_DEFAULT_VLAN_OFFSET);
+	else
+		pvid = readl(prueth->shram.va + EMAC_ICSSG_SWITCH_PORT2_DEFAULT_VLAN_OFFSET);
+
+	pvid = pvid >> 24;
+
+	return pvid;
+}
+EXPORT_SYMBOL_GPL(icssg_get_pvid);
+
+void icssg_set_pvid(struct prueth *prueth, u8 vid, u8 port)
+{
+	u32 pvid;
+
+	/* only 256 VLANs are supported */
+	pvid = (u32 __force)cpu_to_be32((ETH_P_8021Q << 16) | (vid & 0xff));
+
+	if (port == PRUETH_PORT_MII0)
+		writel(pvid, prueth->shram.va + EMAC_ICSSG_SWITCH_PORT1_DEFAULT_VLAN_OFFSET);
+	else if (port == PRUETH_PORT_MII1)
+		writel(pvid, prueth->shram.va + EMAC_ICSSG_SWITCH_PORT2_DEFAULT_VLAN_OFFSET);
+	else
+		writel(pvid, prueth->shram.va + EMAC_ICSSG_SWITCH_PORT0_DEFAULT_VLAN_OFFSET);
+}
+EXPORT_SYMBOL_GPL(icssg_set_pvid);
+
+int emac_fdb_flow_id_updated(struct prueth_emac *emac)
+{
+	struct mgmt_cmd_rsp fdb_cmd_rsp = { 0 };
+	int slice = prueth_emac_slice(emac);
+	struct mgmt_cmd fdb_cmd = { 0 };
+	int ret;
+
+	fdb_cmd.header = ICSSG_FW_MGMT_CMD_HEADER;
+	fdb_cmd.type   = ICSSG_FW_MGMT_FDB_CMD_TYPE_RX_FLOW;
+	fdb_cmd.seqnum = ++(emac->prueth->icssg_hwcmdseq);
+	fdb_cmd.param  = 0;
+
+	fdb_cmd.param |= (slice << 4);
+	fdb_cmd.cmd_args[0] = 0;
+
+	ret = icssg_send_fdb_msg(emac, &fdb_cmd, &fdb_cmd_rsp);
+	if (ret)
+		return ret;
+
+	WARN_ON(fdb_cmd.seqnum != fdb_cmd_rsp.seqnum);
+	return fdb_cmd_rsp.status == 1 ? 0 : -EINVAL;
+}
+EXPORT_SYMBOL_GPL(emac_fdb_flow_id_updated);

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_config.h

@@ -0,0 +1,335 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Texas Instruments ICSSG Ethernet driver
+ *
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#ifndef __NET_TI_ICSSG_CONFIG_H
+#define __NET_TI_ICSSG_CONFIG_H
+
+struct icssg_buffer_pool_cfg {
+	__le32	addr;
+	__le32	len;
+} __packed;
+
+struct icssg_flow_cfg {
+	__le16 rx_base_flow;
+	__le16 mgm_base_flow;
+} __packed;
+
+#define PRUETH_PKT_TYPE_CMD	0x10
+#define PRUETH_NAV_PS_DATA_SIZE	16	/* Protocol specific data size */
+#define PRUETH_NAV_SW_DATA_SIZE	16	/* SW related data size */
+#define PRUETH_MAX_TX_DESC	512
+#define PRUETH_MAX_RX_DESC	512
+#define PRUETH_MAX_RX_FLOWS	1	/* excluding default flow */
+#define PRUETH_RX_FLOW_DATA	0
+
+/* Defines for forwarding path buffer pools:
+ *   - used by firmware to store packets to be forwarded to other port
+ *   - 8 total pools per slice
+ *   - only used in switch mode (as no forwarding in mac mode)
+ */
+#define PRUETH_NUM_FWD_BUF_POOLS_PER_SLICE			8
+#define PRUETH_SW_FWD_BUF_POOL_SIZE				(SZ_8K)
+
+/* Defines for local injection path buffer pools:
+ *   - used by firmware to store packets received from host core
+ *   - 16 total pools per slice
+ *   - 8 pools per port per slice and each slice handles both ports
+ *   - only 4 out of 8 pools used per port (as only 4 real QoS levels in ICSSG)
+ *   - switch mode: 8 total pools used
+ *   - mac mode:    4 total pools used
+ */
+#define PRUETH_NUM_LI_BUF_POOLS_PER_SLICE			16
+#define PRUETH_NUM_LI_BUF_POOLS_PER_PORT_PER_SLICE		8
+#define PRUETH_SW_LI_BUF_POOL_SIZE				SZ_4K
+#define PRUETH_SW_USED_LI_BUF_POOLS_PER_SLICE			8
+#define PRUETH_SW_USED_LI_BUF_POOLS_PER_PORT_PER_SLICE		4
+#define PRUETH_EMAC_LI_BUF_POOL_SIZE				SZ_8K
+#define PRUETH_EMAC_USED_LI_BUF_POOLS_PER_SLICE			4
+#define PRUETH_EMAC_USED_LI_BUF_POOLS_PER_PORT_PER_SLICE	4
+
+/* Defines for host egress path - express and preemptible buffers
+ *   - used by firmware to store express and preemptible packets
+ *     to be transmitted to host core
+ *   - used by both mac/switch modes
+ */
+#define PRUETH_SW_HOST_EXP_BUF_POOL_SIZE	SZ_16K
+#define PRUETH_SW_HOST_PRE_BUF_POOL_SIZE	(SZ_16K - SZ_2K)
+#define PRUETH_EMAC_HOST_EXP_BUF_POOL_SIZE	PRUETH_SW_HOST_EXP_BUF_POOL_SIZE
+#define PRUETH_EMAC_HOST_PRE_BUF_POOL_SIZE	PRUETH_SW_HOST_PRE_BUF_POOL_SIZE
+
+/* Buffer used by firmware to temporarily store packet to be dropped */
+#define PRUETH_SW_DROP_PKT_BUF_SIZE		SZ_2K
+#define PRUETH_EMAC_DROP_PKT_BUF_SIZE		PRUETH_SW_DROP_PKT_BUF_SIZE
+
+/* Total switch mode memory usage for buffers per slice */
+#define PRUETH_SW_TOTAL_BUF_SIZE_PER_SLICE \
+	(PRUETH_SW_FWD_BUF_POOL_SIZE * PRUETH_NUM_FWD_BUF_POOLS_PER_SLICE + \
+	 PRUETH_SW_LI_BUF_POOL_SIZE * PRUETH_SW_USED_LI_BUF_POOLS_PER_SLICE + \
+	 PRUETH_SW_HOST_EXP_BUF_POOL_SIZE + \
+	 PRUETH_SW_HOST_PRE_BUF_POOL_SIZE + \
+	 PRUETH_SW_DROP_PKT_BUF_SIZE)
+
+/* Total switch mode memory usage for all buffers */
+#define PRUETH_SW_TOTAL_BUF_SIZE \
+	(2 * PRUETH_SW_TOTAL_BUF_SIZE_PER_SLICE)
+
+/* Total mac mode memory usage for buffers per slice */
+#define PRUETH_EMAC_TOTAL_BUF_SIZE_PER_SLICE \
+	(PRUETH_EMAC_LI_BUF_POOL_SIZE * \
+	 PRUETH_EMAC_USED_LI_BUF_POOLS_PER_SLICE + \
+	 PRUETH_EMAC_HOST_EXP_BUF_POOL_SIZE + \
+	 PRUETH_EMAC_HOST_PRE_BUF_POOL_SIZE + \
+	 PRUETH_EMAC_DROP_PKT_BUF_SIZE)
+
+/* Total mac mode memory usage for all buffers */
+#define PRUETH_EMAC_TOTAL_BUF_SIZE \
+	(2 * PRUETH_EMAC_TOTAL_BUF_SIZE_PER_SLICE)
+
+/* Size of 1 bank of MSMC/OC_SRAM memory */
+#define MSMC_RAM_BANK_SIZE			SZ_256K
+
+#define PRUETH_SWITCH_FDB_MASK ((SIZE_OF_FDB / NUMBER_OF_FDB_BUCKET_ENTRIES) - 1)
+
+struct icssg_rxq_ctx {
+	__le32 start[3];
+	__le32 end;
+} __packed;
+
+/* Load time Fiwmware Configuration */
+
+#define ICSSG_FW_MGMT_CMD_HEADER	0x81
+#define ICSSG_FW_MGMT_FDB_CMD_TYPE	0x03
+#define ICSSG_FW_MGMT_CMD_TYPE		0x04
+#define ICSSG_FW_MGMT_PKT		0x80000000
+#define ICSSG_FW_MGMT_FDB_CMD_TYPE_RX_FLOW	0x05
+
+struct icssg_r30_cmd {
+	u32 cmd[4];
+} __packed;
+
+enum icssg_port_state_cmd {
+	ICSSG_EMAC_PORT_DISABLE = 0,
+	ICSSG_EMAC_PORT_BLOCK,
+	ICSSG_EMAC_PORT_FORWARD,
+	ICSSG_EMAC_PORT_FORWARD_WO_LEARNING,
+	ICSSG_EMAC_PORT_ACCEPT_ALL,
+	ICSSG_EMAC_PORT_ACCEPT_TAGGED,
+	ICSSG_EMAC_PORT_ACCEPT_UNTAGGED_N_PRIO,
+	ICSSG_EMAC_PORT_TAS_TRIGGER,
+	ICSSG_EMAC_PORT_TAS_ENABLE,
+	ICSSG_EMAC_PORT_TAS_RESET,
+	ICSSG_EMAC_PORT_TAS_DISABLE,
+	ICSSG_EMAC_PORT_UC_FLOODING_ENABLE,
+	ICSSG_EMAC_PORT_UC_FLOODING_DISABLE,
+	ICSSG_EMAC_PORT_MC_FLOODING_ENABLE,
+	ICSSG_EMAC_PORT_MC_FLOODING_DISABLE,
+	ICSSG_EMAC_PORT_PREMPT_TX_ENABLE,
+	ICSSG_EMAC_PORT_PREMPT_TX_DISABLE,
+	ICSSG_EMAC_PORT_VLAN_AWARE_ENABLE,
+	ICSSG_EMAC_PORT_VLAN_AWARE_DISABLE,
+	ICSSG_EMAC_HSR_RX_OFFLOAD_ENABLE,
+	ICSSG_EMAC_HSR_RX_OFFLOAD_DISABLE,
+	ICSSG_EMAC_PORT_MAX_COMMANDS
+};
+
+#define EMAC_NONE           0xffff0000
+#define EMAC_PRU0_P_DI      0xffff0004
+#define EMAC_PRU1_P_DI      0xffff0040
+#define EMAC_TX_P_DI        0xffff0100
+
+#define EMAC_PRU0_P_EN      0xfffb0000
+#define EMAC_PRU1_P_EN      0xffbf0000
+#define EMAC_TX_P_EN        0xfeff0000
+
+#define EMAC_P_BLOCK        0xffff0040
+#define EMAC_TX_P_BLOCK     0xffff0200
+#define EMAC_P_UNBLOCK      0xffbf0000
+#define EMAC_TX_P_UNBLOCK   0xfdff0000
+#define EMAC_LEAN_EN        0xfff70000
+#define EMAC_LEAN_DI        0xffff0008
+
+#define EMAC_ACCEPT_ALL     0xffff0001
+#define EMAC_ACCEPT_TAG     0xfffe0002
+#define EMAC_ACCEPT_PRIOR   0xfffc0000
+
+/* Config area lies in DRAM */
+#define ICSSG_CONFIG_OFFSET	0x0
+
+/* Config area lies in shared RAM */
+#define ICSSG_CONFIG_OFFSET_SLICE0   0
+#define ICSSG_CONFIG_OFFSET_SLICE1   0x8000
+
+#define ICSSG_NUM_NORMAL_PDS	64
+#define ICSSG_NUM_SPECIAL_PDS	16
+
+#define ICSSG_NORMAL_PD_SIZE	8
+#define ICSSG_SPECIAL_PD_SIZE	20
+
+#define ICSSG_FLAG_MASK		0xff00ffff
+
+/* SR1.0-specific bits */
+#define PRUETH_MAX_RX_FLOWS_SR1			4	/* excluding default flow */
+#define PRUETH_RX_FLOW_DATA_SR1			3       /* highest priority flow */
+#define PRUETH_MAX_RX_MGM_DESC_SR1		8
+#define PRUETH_MAX_RX_MGM_FLOWS_SR1		2	/* excluding default flow */
+#define PRUETH_RX_MGM_FLOW_RESPONSE_SR1		0
+#define PRUETH_RX_MGM_FLOW_TIMESTAMP_SR1	1
+
+#define PRUETH_NUM_BUF_POOLS_SR1		16
+#define PRUETH_EMAC_BUF_POOL_START_SR1		8
+#define PRUETH_EMAC_BUF_POOL_MIN_SIZE_SR1	128
+#define PRUETH_EMAC_BUF_SIZE_SR1		1536
+#define PRUETH_EMAC_NUM_BUF_SR1			4
+#define PRUETH_EMAC_BUF_POOL_SIZE_SR1	(PRUETH_EMAC_NUM_BUF_SR1 * \
+					 PRUETH_EMAC_BUF_SIZE_SR1)
+#define MSMC_RAM_SIZE_SR1	(SZ_64K + SZ_32K + SZ_2K) /* 0x1880 x 8 x 2 */
+
+struct icssg_sr1_config {
+	__le32 status;		/* Firmware status */
+	__le32 addr_lo;		/* MSMC Buffer pool base address low. */
+	__le32 addr_hi;		/* MSMC Buffer pool base address high. Must be 0 */
+	__le32 tx_buf_sz[16];	/* Array of buffer pool sizes */
+	__le32 num_tx_threads;	/* Number of active egress threads, 1 to 4 */
+	__le32 tx_rate_lim_en;	/* Bitmask: Egress rate limit en per thread */
+	__le32 rx_flow_id;	/* RX flow id for first rx ring */
+	__le32 rx_mgr_flow_id;	/* RX flow id for the first management ring */
+	__le32 flags;		/* TBD */
+	__le32 n_burst;		/* for debug */
+	__le32 rtu_status;	/* RTU status */
+	__le32 info;		/* reserved */
+	__le32 reserve;
+	__le32 rand_seed;	/* Used for the random number generation at fw */
+} __packed;
+
+/* SR1.0 shutdown command to stop processing at firmware.
+ * Command format: 0x8101ss00, where
+ *	- ss: sequence number. Currently not used by driver.
+ */
+#define ICSSG_SHUTDOWN_CMD_SR1		0x81010000
+
+/* SR1.0 pstate speed/duplex command to set speed and duplex settings
+ * in firmware.
+ * Command format: 0x8102ssPN, where
+ *	- ss: sequence number. Currently not used by driver.
+ *	- P: port number (for switch mode).
+ *	- N: Speed/Duplex state:
+ *		0x0 - 10Mbps/Half duplex;
+ *		0x8 - 10Mbps/Full duplex;
+ *		0x2 - 100Mbps/Half duplex;
+ *		0xa - 100Mbps/Full duplex;
+ *		0xc - 1Gbps/Full duplex;
+ *		NOTE: The above are the same value as bits [3..1](slice 0)
+ *		      or bits [7..5](slice 1) of RGMII CFG register.
+ */
+#define ICSSG_PSTATE_SPEED_DUPLEX_CMD_SR1	0x81020000
+
+struct icssg_setclock_desc {
+	u8 request;
+	u8 restore;
+	u8 acknowledgment;
+	u8 cmp_status;
+	u32 margin;
+	u32 cyclecounter0_set;
+	u32 cyclecounter1_set;
+	u32 iepcount_set;
+	u32 rsvd1;
+	u32 rsvd2;
+	u32 CMP0_current;
+	u32 iepcount_current;
+	u32 difference;
+	u32 cyclecounter0_new;
+	u32 cyclecounter1_new;
+	u32 CMP0_new;
+} __packed;
+
+#define ICSSG_CMD_POP_SLICE0	56
+#define ICSSG_CMD_POP_SLICE1	60
+
+#define ICSSG_CMD_PUSH_SLICE0	57
+#define ICSSG_CMD_PUSH_SLICE1	61
+
+#define ICSSG_RSP_POP_SLICE0	58
+#define ICSSG_RSP_POP_SLICE1	62
+
+#define ICSSG_RSP_PUSH_SLICE0	56
+#define ICSSG_RSP_PUSH_SLICE1	60
+
+#define ICSSG_TS_POP_SLICE0	59
+#define ICSSG_TS_POP_SLICE1	63
+
+#define ICSSG_TS_PUSH_SLICE0	40
+#define ICSSG_TS_PUSH_SLICE1	41
+
+struct mgmt_cmd {
+	u8 param;
+	u8 seqnum;
+	u8 type;
+	u8 header;
+	u32 cmd_args[3];
+};
+
+struct mgmt_cmd_rsp {
+	u32 reserved;
+	u8 status;
+	u8 seqnum;
+	u8 type;
+	u8 header;
+	u32 cmd_args[3];
+};
+
+/* FDB FID_C2 flag definitions */
+/* Indicates host port membership.*/
+#define ICSSG_FDB_ENTRY_P0_MEMBERSHIP         BIT(0)
+/* Indicates that MAC ID is connected to physical port 1 */
+#define ICSSG_FDB_ENTRY_P1_MEMBERSHIP         BIT(1)
+/* Indicates that MAC ID is connected to physical port 2 */
+#define ICSSG_FDB_ENTRY_P2_MEMBERSHIP         BIT(2)
+/* Ageable bit is set for learned entries and cleared for static entries */
+#define ICSSG_FDB_ENTRY_AGEABLE               BIT(3)
+/* If set for DA then packet is determined to be a special packet */
+#define ICSSG_FDB_ENTRY_BLOCK                 BIT(4)
+/* If set for DA then the SA from the packet is not learned */
+#define ICSSG_FDB_ENTRY_SECURE                BIT(5)
+/* If set, it means packet has been seen recently with source address + FID
+ * matching MAC address/FID of entry
+ */
+#define ICSSG_FDB_ENTRY_TOUCHED               BIT(6)
+/* Set if entry is valid */
+#define ICSSG_FDB_ENTRY_VALID                 BIT(7)
+
+/**
+ * struct prueth_vlan_tbl - VLAN table entries struct in ICSSG SMEM
+ * @fid_c1: membership and forwarding rules flag to this table. See
+ *          above to defines for bit definitions
+ * @fid: FDB index for this VID (there is 1-1 mapping b/w VID and FID)
+ */
+struct prueth_vlan_tbl {
+	u8 fid_c1;
+	u8 fid;
+} __packed;
+
+/**
+ * struct prueth_fdb_slot - Result of FDB slot lookup
+ * @mac: MAC address
+ * @fid: fid to be associated with MAC
+ * @fid_c2: FID_C2 entry for this MAC
+ */
+struct prueth_fdb_slot {
+	u8 mac[ETH_ALEN];
+	u8 fid;
+	u8 fid_c2;
+} __packed;
+
+enum icssg_ietfpe_verify_states {
+	ICSSG_IETFPE_STATE_UNKNOWN = 0,
+	ICSSG_IETFPE_STATE_INITIAL,
+	ICSSG_IETFPE_STATE_VERIFYING,
+	ICSSG_IETFPE_STATE_SUCCEEDED,
+	ICSSG_IETFPE_STATE_FAILED,
+	ICSSG_IETFPE_STATE_DISABLED
+};
+#endif /* __NET_TI_ICSSG_CONFIG_H */

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_ethtool.c

@@ -0,0 +1,321 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Texas Instruments ICSSG Ethernet driver
+ *
+ * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#include "icssg_prueth.h"
+#include "icssg_stats.h"
+
+static void emac_get_drvinfo(struct net_device *ndev,
+			     struct ethtool_drvinfo *info)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
+
+	strscpy(info->driver, dev_driver_string(prueth->dev),
+		sizeof(info->driver));
+	strscpy(info->bus_info, dev_name(prueth->dev), sizeof(info->bus_info));
+}
+
+static u32 emac_get_msglevel(struct net_device *ndev)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+
+	return emac->msg_enable;
+}
+
+static void emac_set_msglevel(struct net_device *ndev, u32 value)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+
+	emac->msg_enable = value;
+}
+
+static int emac_get_link_ksettings(struct net_device *ndev,
+				   struct ethtool_link_ksettings *ecmd)
+{
+	return phy_ethtool_get_link_ksettings(ndev, ecmd);
+}
+
+static int emac_set_link_ksettings(struct net_device *ndev,
+				   const struct ethtool_link_ksettings *ecmd)
+{
+	return phy_ethtool_set_link_ksettings(ndev, ecmd);
+}
+
+static int emac_get_eee(struct net_device *ndev, struct ethtool_keee *edata)
+{
+	if (!ndev->phydev)
+		return -EOPNOTSUPP;
+
+	return phy_ethtool_get_eee(ndev->phydev, edata);
+}
+
+static int emac_set_eee(struct net_device *ndev, struct ethtool_keee *edata)
+{
+	if (!ndev->phydev)
+		return -EOPNOTSUPP;
+
+	return phy_ethtool_set_eee(ndev->phydev, edata);
+}
+
+static int emac_nway_reset(struct net_device *ndev)
+{
+	return phy_ethtool_nway_reset(ndev);
+}
+
+static int emac_get_sset_count(struct net_device *ndev, int stringset)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	switch (stringset) {
+	case ETH_SS_STATS:
+		if (emac->prueth->pa_stats)
+			return ICSSG_NUM_ETHTOOL_STATS;
+		else
+			return ICSSG_NUM_ETHTOOL_STATS - ICSSG_NUM_PA_STATS;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void emac_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	u8 *p = data;
+	int i;
+
+	switch (stringset) {
+	case ETH_SS_STATS:
+		for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++)
+			if (!icssg_all_miig_stats[i].standard_stats)
+				ethtool_puts(&p, icssg_all_miig_stats[i].name);
+		if (emac->prueth->pa_stats)
+			for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++)
+				ethtool_puts(&p, icssg_all_pa_stats[i].name);
+		break;
+	default:
+		break;
+	}
+}
+
+static void emac_get_ethtool_stats(struct net_device *ndev,
+				   struct ethtool_stats *stats, u64 *data)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	int i;
+
+	emac_update_hardware_stats(emac);
+
+	for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++)
+		if (!icssg_all_miig_stats[i].standard_stats)
+			*(data++) = emac->stats[i];
+
+	if (emac->prueth->pa_stats)
+		for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++)
+			*(data++) = emac->pa_stats[i];
+}
+
+static int emac_get_ts_info(struct net_device *ndev,
+			    struct kernel_ethtool_ts_info *info)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+
+	info->so_timestamping =
+		SOF_TIMESTAMPING_TX_HARDWARE |
+		SOF_TIMESTAMPING_TX_SOFTWARE |
+		SOF_TIMESTAMPING_RX_HARDWARE |
+		SOF_TIMESTAMPING_RAW_HARDWARE;
+
+	info->phc_index = icss_iep_get_ptp_clock_idx(emac->iep);
+	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
+	info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | BIT(HWTSTAMP_FILTER_ALL);
+
+	return 0;
+}
+
+static int emac_set_channels(struct net_device *ndev,
+			     struct ethtool_channels *ch)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+
+	/* Check if interface is up. Can change the num queues when
+	 * the interface is down.
+	 */
+	if (netif_running(emac->ndev))
+		return -EBUSY;
+
+	emac->tx_ch_num = ch->tx_count;
+
+	if (emac->is_sr1)
+		emac->tx_ch_num++;
+
+	return 0;
+}
+
+static void emac_get_channels(struct net_device *ndev,
+			      struct ethtool_channels *ch)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+
+	ch->max_rx = 1;
+	ch->max_tx = PRUETH_MAX_TX_QUEUES;
+
+	/* Disable multiple TX channels due to timeouts
+	 * when using more than one queue */
+	if (emac->is_sr1)
+		ch->max_tx = 1;
+
+	ch->rx_count = 1;
+	ch->tx_count = emac->tx_ch_num;
+
+	if (emac->is_sr1)
+		ch->tx_count--;
+}
+
+static const struct ethtool_rmon_hist_range emac_rmon_ranges[] = {
+	{    0,   64},
+	{   65,  128},
+	{  129,  256},
+	{  257,  512},
+	{  513, PRUETH_MAX_PKT_SIZE},
+	{}
+};
+
+static void emac_get_rmon_stats(struct net_device *ndev,
+				struct ethtool_rmon_stats *rmon_stats,
+				const struct ethtool_rmon_hist_range **ranges)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+
+	*ranges = emac_rmon_ranges;
+
+	rmon_stats->undersize_pkts = emac_get_stat_by_name(emac, "rx_bucket1_frames") -
+				     emac_get_stat_by_name(emac, "rx_64B_frames");
+
+	rmon_stats->hist[0] = emac_get_stat_by_name(emac, "rx_bucket1_frames");
+	rmon_stats->hist[1] = emac_get_stat_by_name(emac, "rx_bucket2_frames");
+	rmon_stats->hist[2] = emac_get_stat_by_name(emac, "rx_bucket3_frames");
+	rmon_stats->hist[3] = emac_get_stat_by_name(emac, "rx_bucket4_frames");
+	rmon_stats->hist[4] = emac_get_stat_by_name(emac, "rx_bucket5_frames");
+
+	rmon_stats->hist_tx[0] = emac_get_stat_by_name(emac, "tx_bucket1_frames");
+	rmon_stats->hist_tx[1] = emac_get_stat_by_name(emac, "tx_bucket2_frames");
+	rmon_stats->hist_tx[2] = emac_get_stat_by_name(emac, "tx_bucket3_frames");
+	rmon_stats->hist_tx[3] = emac_get_stat_by_name(emac, "tx_bucket4_frames");
+	rmon_stats->hist_tx[4] = emac_get_stat_by_name(emac, "tx_bucket5_frames");
+}
+
+static int emac_get_coalesce(struct net_device *ndev,
+			     struct ethtool_coalesce *coal,
+			     struct kernel_ethtool_coalesce *kernel_coal,
+			     struct netlink_ext_ack *extack)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth_tx_chn *tx_chn;
+
+	tx_chn = &emac->tx_chns[0];
+
+	coal->rx_coalesce_usecs = emac->rx_pace_timeout_ns / 1000;
+	coal->tx_coalesce_usecs = tx_chn->tx_pace_timeout_ns / 1000;
+
+	return 0;
+}
+
+static int emac_get_per_queue_coalesce(struct net_device *ndev, u32 queue,
+				       struct ethtool_coalesce *coal)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth_tx_chn *tx_chn;
+
+	if (queue >= PRUETH_MAX_TX_QUEUES)
+		return -EINVAL;
+
+	tx_chn = &emac->tx_chns[queue];
+
+	coal->tx_coalesce_usecs = tx_chn->tx_pace_timeout_ns / 1000;
+
+	return 0;
+}
+
+static int emac_set_coalesce(struct net_device *ndev,
+			     struct ethtool_coalesce *coal,
+			     struct kernel_ethtool_coalesce *kernel_coal,
+			     struct netlink_ext_ack *extack)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
+	struct prueth_tx_chn *tx_chn;
+
+	tx_chn = &emac->tx_chns[0];
+
+	if (coal->rx_coalesce_usecs &&
+	    coal->rx_coalesce_usecs < ICSSG_MIN_COALESCE_USECS) {
+		dev_info(prueth->dev, "defaulting to min value of %dus for rx-usecs\n",
+			 ICSSG_MIN_COALESCE_USECS);
+		coal->rx_coalesce_usecs = ICSSG_MIN_COALESCE_USECS;
+	}
+
+	if (coal->tx_coalesce_usecs &&
+	    coal->tx_coalesce_usecs < ICSSG_MIN_COALESCE_USECS) {
+		dev_info(prueth->dev, "defaulting to min value of %dus for tx-usecs\n",
+			 ICSSG_MIN_COALESCE_USECS);
+		coal->tx_coalesce_usecs = ICSSG_MIN_COALESCE_USECS;
+	}
+
+	emac->rx_pace_timeout_ns = coal->rx_coalesce_usecs * 1000;
+	tx_chn->tx_pace_timeout_ns = coal->tx_coalesce_usecs * 1000;
+
+	return 0;
+}
+
+static int emac_set_per_queue_coalesce(struct net_device *ndev, u32 queue,
+				       struct ethtool_coalesce *coal)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
+	struct prueth_tx_chn *tx_chn;
+
+	if (queue >= PRUETH_MAX_TX_QUEUES)
+		return -EINVAL;
+
+	tx_chn = &emac->tx_chns[queue];
+
+	if (coal->tx_coalesce_usecs &&
+	    coal->tx_coalesce_usecs < ICSSG_MIN_COALESCE_USECS) {
+		dev_info(prueth->dev, "defaulting to min value of %dus for tx-usecs for tx-%u\n",
+			 ICSSG_MIN_COALESCE_USECS, queue);
+		coal->tx_coalesce_usecs = ICSSG_MIN_COALESCE_USECS;
+	}
+
+	tx_chn->tx_pace_timeout_ns = coal->tx_coalesce_usecs * 1000;
+
+	return 0;
+}
+
+const struct ethtool_ops icssg_ethtool_ops = {
+	.get_drvinfo = emac_get_drvinfo,
+	.get_msglevel = emac_get_msglevel,
+	.set_msglevel = emac_set_msglevel,
+	.get_sset_count = emac_get_sset_count,
+	.get_ethtool_stats = emac_get_ethtool_stats,
+	.get_strings = emac_get_strings,
+	.get_ts_info = emac_get_ts_info,
+	.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
+				     ETHTOOL_COALESCE_TX_USECS,
+	.get_coalesce = emac_get_coalesce,
+	.set_coalesce = emac_set_coalesce,
+	.get_per_queue_coalesce = emac_get_per_queue_coalesce,
+	.set_per_queue_coalesce = emac_set_per_queue_coalesce,
+	.get_channels = emac_get_channels,
+	.set_channels = emac_set_channels,
+	.get_link_ksettings = emac_get_link_ksettings,
+	.set_link_ksettings = emac_set_link_ksettings,
+	.get_link = ethtool_op_get_link,
+	.get_eee = emac_get_eee,
+	.set_eee = emac_set_eee,
+	.nway_reset = emac_nway_reset,
+	.get_rmon_stats = emac_get_rmon_stats,
+};
+EXPORT_SYMBOL_GPL(icssg_ethtool_ops);

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c

@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Texas Instruments ICSSG Ethernet Driver
+ *
+ * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/regmap.h>
+#include <linux/types.h>
+
+#include "icssg_mii_rt.h"
+#include "icssg_prueth.h"
+
+void icssg_mii_update_ipg(struct regmap *mii_rt, int mii, u32 ipg)
+{
+	u32 val;
+
+	if (mii == ICSS_MII0) {
+		regmap_write(mii_rt, PRUSS_MII_RT_TX_IPG0, ipg);
+	} else {
+		regmap_read(mii_rt, PRUSS_MII_RT_TX_IPG0, &val);
+		regmap_write(mii_rt, PRUSS_MII_RT_TX_IPG1, ipg);
+		regmap_write(mii_rt, PRUSS_MII_RT_TX_IPG0, val);
+	}
+}
+
+void icssg_mii_update_mtu(struct regmap *mii_rt, int mii, int mtu)
+{
+	mtu += (ETH_HLEN + ETH_FCS_LEN);
+	if (mii == ICSS_MII0) {
+		regmap_update_bits(mii_rt,
+				   PRUSS_MII_RT_RX_FRMS0,
+				   PRUSS_MII_RT_RX_FRMS_MAX_FRM_MASK,
+				   (mtu - 1) << PRUSS_MII_RT_RX_FRMS_MAX_FRM_SHIFT);
+	} else {
+		regmap_update_bits(mii_rt,
+				   PRUSS_MII_RT_RX_FRMS1,
+				   PRUSS_MII_RT_RX_FRMS_MAX_FRM_MASK,
+				   (mtu - 1) << PRUSS_MII_RT_RX_FRMS_MAX_FRM_SHIFT);
+	}
+}
+EXPORT_SYMBOL_GPL(icssg_mii_update_mtu);
+
+void icssg_update_rgmii_cfg(struct regmap *miig_rt, struct prueth_emac *emac)
+{
+	u32 gig_en_mask, gig_val = 0, full_duplex_mask, full_duplex_val = 0;
+	int slice = prueth_emac_slice(emac);
+	u32 inband_en_mask, inband_val = 0;
+
+	gig_en_mask = (slice == ICSS_MII0) ? RGMII_CFG_GIG_EN_MII0 :
+					RGMII_CFG_GIG_EN_MII1;
+	if (emac->speed == SPEED_1000)
+		gig_val = gig_en_mask;
+	regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, gig_en_mask, gig_val);
+
+	inband_en_mask = (slice == ICSS_MII0) ? RGMII_CFG_INBAND_EN_MII0 :
+					RGMII_CFG_INBAND_EN_MII1;
+	if (emac->speed == SPEED_10 && phy_interface_mode_is_rgmii(emac->phy_if))
+		inband_val = inband_en_mask;
+	regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, inband_en_mask, inband_val);
+
+	full_duplex_mask = (slice == ICSS_MII0) ? RGMII_CFG_FULL_DUPLEX_MII0 :
+					   RGMII_CFG_FULL_DUPLEX_MII1;
+	if (emac->duplex == DUPLEX_FULL)
+		full_duplex_val = full_duplex_mask;
+	regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, full_duplex_mask,
+			   full_duplex_val);
+}
+EXPORT_SYMBOL_GPL(icssg_update_rgmii_cfg);
+
+void icssg_miig_set_interface_mode(struct regmap *miig_rt, int mii, phy_interface_t phy_if)
+{
+	u32 val, mask, shift;
+
+	mask = mii == ICSS_MII0 ? ICSSG_CFG_MII0_MODE : ICSSG_CFG_MII1_MODE;
+	shift =  mii == ICSS_MII0 ? ICSSG_CFG_MII0_MODE_SHIFT : ICSSG_CFG_MII1_MODE_SHIFT;
+
+	val = MII_MODE_RGMII;
+	if (phy_if == PHY_INTERFACE_MODE_MII)
+		val = MII_MODE_MII;
+
+	val <<= shift;
+	regmap_update_bits(miig_rt, ICSSG_CFG_OFFSET, mask, val);
+	regmap_read(miig_rt, ICSSG_CFG_OFFSET, &val);
+}
+
+u32 icssg_rgmii_cfg_get_bitfield(struct regmap *miig_rt, u32 mask, u32 shift)
+{
+	u32 val;
+
+	regmap_read(miig_rt, RGMII_CFG_OFFSET, &val);
+	val &= mask;
+	val >>= shift;
+
+	return val;
+}
+
+u32 icssg_rgmii_get_speed(struct regmap *miig_rt, int mii)
+{
+	u32 shift = RGMII_CFG_SPEED_MII0_SHIFT, mask = RGMII_CFG_SPEED_MII0;
+
+	if (mii == ICSS_MII1) {
+		shift = RGMII_CFG_SPEED_MII1_SHIFT;
+		mask = RGMII_CFG_SPEED_MII1;
+	}
+
+	return icssg_rgmii_cfg_get_bitfield(miig_rt, mask, shift);
+}
+EXPORT_SYMBOL_GPL(icssg_rgmii_get_speed);
+
+u32 icssg_rgmii_get_fullduplex(struct regmap *miig_rt, int mii)
+{
+	u32 shift = RGMII_CFG_FULLDUPLEX_MII0_SHIFT;
+	u32 mask = RGMII_CFG_FULLDUPLEX_MII0;
+
+	if (mii == ICSS_MII1) {
+		shift = RGMII_CFG_FULLDUPLEX_MII1_SHIFT;
+		mask = RGMII_CFG_FULLDUPLEX_MII1;
+	}
+
+	return icssg_rgmii_cfg_get_bitfield(miig_rt, mask, shift);
+}
+EXPORT_SYMBOL_GPL(icssg_rgmii_get_fullduplex);

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_mii_rt.h

@@ -0,0 +1,151 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/* PRU-ICSS MII_RT register definitions
+ *
+ * Copyright (C) 2015-2022 Texas Instruments Incorporated - https://www.ti.com
+ */
+
+#ifndef __NET_PRUSS_MII_RT_H__
+#define __NET_PRUSS_MII_RT_H__
+
+#include <linux/if_ether.h>
+#include <linux/phy.h>
+
+/* PRUSS_MII_RT Registers */
+#define PRUSS_MII_RT_RXCFG0		0x0
+#define PRUSS_MII_RT_RXCFG1		0x4
+#define PRUSS_MII_RT_TXCFG0		0x10
+#define PRUSS_MII_RT_TXCFG1		0x14
+#define PRUSS_MII_RT_TX_CRC0		0x20
+#define PRUSS_MII_RT_TX_CRC1		0x24
+#define PRUSS_MII_RT_TX_IPG0		0x30
+#define PRUSS_MII_RT_TX_IPG1		0x34
+#define PRUSS_MII_RT_PRS0		0x38
+#define PRUSS_MII_RT_PRS1		0x3c
+#define PRUSS_MII_RT_RX_FRMS0		0x40
+#define PRUSS_MII_RT_RX_FRMS1		0x44
+#define PRUSS_MII_RT_RX_PCNT0		0x48
+#define PRUSS_MII_RT_RX_PCNT1		0x4c
+#define PRUSS_MII_RT_RX_ERR0		0x50
+#define PRUSS_MII_RT_RX_ERR1		0x54
+
+/* PRUSS_MII_RT_RXCFG0/1 bits */
+#define PRUSS_MII_RT_RXCFG_RX_ENABLE		BIT(0)
+#define PRUSS_MII_RT_RXCFG_RX_DATA_RDY_MODE_DIS	BIT(1)
+#define PRUSS_MII_RT_RXCFG_RX_CUT_PREAMBLE	BIT(2)
+#define PRUSS_MII_RT_RXCFG_RX_MUX_SEL		BIT(3)
+#define PRUSS_MII_RT_RXCFG_RX_L2_EN		BIT(4)
+#define PRUSS_MII_RT_RXCFG_RX_BYTE_SWAP		BIT(5)
+#define PRUSS_MII_RT_RXCFG_RX_AUTO_FWD_PRE	BIT(6)
+#define PRUSS_MII_RT_RXCFG_RX_L2_EOF_SCLR_DIS	BIT(9)
+
+/* PRUSS_MII_RT_TXCFG0/1 bits */
+#define PRUSS_MII_RT_TXCFG_TX_ENABLE		BIT(0)
+#define PRUSS_MII_RT_TXCFG_TX_AUTO_PREAMBLE	BIT(1)
+#define PRUSS_MII_RT_TXCFG_TX_EN_MODE		BIT(2)
+#define PRUSS_MII_RT_TXCFG_TX_BYTE_SWAP		BIT(3)
+#define PRUSS_MII_RT_TXCFG_TX_MUX_SEL		BIT(8)
+#define PRUSS_MII_RT_TXCFG_PRE_TX_AUTO_SEQUENCE	BIT(9)
+#define PRUSS_MII_RT_TXCFG_PRE_TX_AUTO_ESC_ERR	BIT(10)
+#define PRUSS_MII_RT_TXCFG_TX_32_MODE_EN	BIT(11)
+#define PRUSS_MII_RT_TXCFG_TX_IPG_WIRE_CLK_EN	BIT(12)	/* SR2.0 onwards */
+
+#define PRUSS_MII_RT_TXCFG_TX_START_DELAY_SHIFT	16
+#define PRUSS_MII_RT_TXCFG_TX_START_DELAY_MASK	GENMASK(25, 16)
+
+#define PRUSS_MII_RT_TXCFG_TX_CLK_DELAY_SHIFT	28
+#define PRUSS_MII_RT_TXCFG_TX_CLK_DELAY_MASK	GENMASK(30, 28)
+
+/* PRUSS_MII_RT_TX_IPG0/1 bits */
+#define PRUSS_MII_RT_TX_IPG_IPG_SHIFT	0
+#define PRUSS_MII_RT_TX_IPG_IPG_MASK	GENMASK(9, 0)
+
+/* PRUSS_MII_RT_PRS0/1 bits */
+#define PRUSS_MII_RT_PRS_COL	BIT(0)
+#define PRUSS_MII_RT_PRS_CRS	BIT(1)
+
+/* PRUSS_MII_RT_RX_FRMS0/1 bits */
+#define PRUSS_MII_RT_RX_FRMS_MIN_FRM_SHIFT	0
+#define PRUSS_MII_RT_RX_FRMS_MIN_FRM_MASK	GENMASK(15, 0)
+
+#define PRUSS_MII_RT_RX_FRMS_MAX_FRM_SHIFT	16
+#define PRUSS_MII_RT_RX_FRMS_MAX_FRM_MASK	GENMASK(31, 16)
+
+/* Min/Max in MII_RT_RX_FRMS */
+/* For EMAC and Switch */
+#define PRUSS_MII_RT_RX_FRMS_MAX	(VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
+#define PRUSS_MII_RT_RX_FRMS_MIN_FRM	(64)
+
+/* for HSR and PRP */
+#define PRUSS_MII_RT_RX_FRMS_MAX_FRM_LRE	(PRUSS_MII_RT_RX_FRMS_MAX + \
+						 ICSS_LRE_TAG_RCT_SIZE)
+/* PRUSS_MII_RT_RX_PCNT0/1 bits */
+#define PRUSS_MII_RT_RX_PCNT_MIN_PCNT_SHIFT	0
+#define PRUSS_MII_RT_RX_PCNT_MIN_PCNT_MASK	GENMASK(3, 0)
+
+#define PRUSS_MII_RT_RX_PCNT_MAX_PCNT_SHIFT	4
+#define PRUSS_MII_RT_RX_PCNT_MAX_PCNT_MASK	GENMASK(7, 4)
+
+/* PRUSS_MII_RT_RX_ERR0/1 bits */
+#define PRUSS_MII_RT_RX_ERR_MIN_PCNT_ERR	BIT(0)
+#define PRUSS_MII_RT_RX_ERR_MAX_PCNT_ERR	BIT(1)
+#define PRUSS_MII_RT_RX_ERR_MIN_FRM_ERR		BIT(2)
+#define PRUSS_MII_RT_RX_ERR_MAX_FRM_ERR		BIT(3)
+
+#define ICSSG_CFG_OFFSET	0
+#define RGMII_CFG_OFFSET	4
+
+/* Constant to choose between MII0 and MII1 */
+#define ICSS_MII0	0
+#define ICSS_MII1	1
+
+/* ICSSG_CFG Register bits */
+#define ICSSG_CFG_SGMII_MODE	BIT(16)
+#define ICSSG_CFG_TX_PRU_EN	BIT(11)
+#define ICSSG_CFG_RX_SFD_TX_SOF_EN	BIT(10)
+#define ICSSG_CFG_RTU_PRU_PSI_SHARE_EN	BIT(9)
+#define ICSSG_CFG_IEP1_TX_EN	BIT(8)
+#define ICSSG_CFG_MII1_MODE	GENMASK(6, 5)
+#define ICSSG_CFG_MII1_MODE_SHIFT	5
+#define ICSSG_CFG_MII0_MODE	GENMASK(4, 3)
+#define ICSSG_CFG_MII0_MODE_SHIFT	3
+#define ICSSG_CFG_RX_L2_G_EN	BIT(2)
+#define ICSSG_CFG_TX_L2_EN	BIT(1)
+#define ICSSG_CFG_TX_L1_EN	BIT(0)
+
+enum mii_mode {
+	MII_MODE_MII = 0,
+	MII_MODE_RGMII
+};
+
+/* RGMII CFG Register bits */
+#define RGMII_CFG_INBAND_EN_MII0	BIT(16)
+#define RGMII_CFG_GIG_EN_MII0	BIT(17)
+#define RGMII_CFG_INBAND_EN_MII1	BIT(20)
+#define RGMII_CFG_GIG_EN_MII1	BIT(21)
+#define RGMII_CFG_FULL_DUPLEX_MII0	BIT(18)
+#define RGMII_CFG_FULL_DUPLEX_MII1	BIT(22)
+#define RGMII_CFG_SPEED_MII0	GENMASK(2, 1)
+#define RGMII_CFG_SPEED_MII1	GENMASK(6, 5)
+#define RGMII_CFG_SPEED_MII0_SHIFT	1
+#define RGMII_CFG_SPEED_MII1_SHIFT	5
+#define RGMII_CFG_FULLDUPLEX_MII0	BIT(3)
+#define RGMII_CFG_FULLDUPLEX_MII1	BIT(7)
+#define RGMII_CFG_FULLDUPLEX_MII0_SHIFT	3
+#define RGMII_CFG_FULLDUPLEX_MII1_SHIFT	7
+#define RGMII_CFG_SPEED_10M	0
+#define RGMII_CFG_SPEED_100M	1
+#define RGMII_CFG_SPEED_1G	2
+
+struct regmap;
+struct prueth_emac;
+
+void icssg_mii_update_ipg(struct regmap *mii_rt, int mii, u32 ipg);
+void icssg_mii_update_mtu(struct regmap *mii_rt, int mii, int mtu);
+void icssg_update_rgmii_cfg(struct regmap *miig_rt, struct prueth_emac *emac);
+u32 icssg_rgmii_cfg_get_bitfield(struct regmap *miig_rt, u32 mask, u32 shift);
+u32 icssg_rgmii_get_speed(struct regmap *miig_rt, int mii);
+u32 icssg_rgmii_get_fullduplex(struct regmap *miig_rt, int mii);
+void icssg_miig_set_interface_mode(struct regmap *miig_rt, int mii, phy_interface_t phy_if);
+
+#endif /* __NET_PRUSS_MII_RT_H__ */

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_prueth.h

@@ -0,0 +1,527 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Texas Instruments ICSSG Ethernet driver
+ *
+ * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#ifndef __NET_TI_ICSSG_PRUETH_H
+#define __NET_TI_ICSSG_PRUETH_H
+
+#include <linux/bpf.h>
+#include <linux/bpf_trace.h>
+#include <linux/etherdevice.h>
+#include <linux/genalloc.h>
+#include <linux/if_vlan.h>
+#include <linux/if_hsr.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/net_tstamp.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_mdio.h>
+#include <linux/of_net.h>
+#include <linux/of_platform.h>
+#include <linux/phy.h>
+#include <linux/remoteproc/pruss.h>
+#include <linux/pruss_driver.h>
+#include <linux/ptp_clock_kernel.h>
+#include <linux/remoteproc.h>
+
+#include <linux/dma-mapping.h>
+#include <linux/dma/ti-cppi5.h>
+#include <linux/dma/k3-udma-glue.h>
+
+#include <net/devlink.h>
+#include <net/xdp.h>
+#include <net/page_pool/helpers.h>
+#include <net/xsk_buff_pool.h>
+#include <net/xdp_sock_drv.h>
+
+#include "icssg_config.h"
+#include "icss_iep.h"
+#include "icssg_switch_map.h"
+
+#define PRUETH_MAX_MTU          (2000 - ETH_HLEN - ETH_FCS_LEN)
+#define PRUETH_MIN_PKT_SIZE     (VLAN_ETH_ZLEN)
+#define PRUETH_MAX_PKT_SIZE     (PRUETH_MAX_MTU + ETH_HLEN + ETH_FCS_LEN)
+
+#define ICSS_SLICE0	0
+#define ICSS_SLICE1	1
+
+#define ICSS_FW_PRU	0
+#define ICSS_FW_RTU	1
+
+#define ICSSG_MAX_RFLOWS	8	/* per slice */
+
+#define ICSSG_NUM_PA_STATS	32
+#define ICSSG_NUM_MIIG_STATS	60
+/* Number of ICSSG related stats */
+#define ICSSG_NUM_STATS (ICSSG_NUM_MIIG_STATS + ICSSG_NUM_PA_STATS)
+#define ICSSG_NUM_STANDARD_STATS 31
+#define ICSSG_NUM_ETHTOOL_STATS (ICSSG_NUM_STATS - ICSSG_NUM_STANDARD_STATS)
+
+#define IEP_DEFAULT_CYCLE_TIME_NS	1000000	/* 1 ms */
+
+#define PRUETH_UNDIRECTED_PKT_DST_TAG	0
+#define PRUETH_UNDIRECTED_PKT_TAG_INS	BIT(30)
+
+/* Firmware status codes */
+#define ICSS_HS_FW_READY 0x55555555
+#define ICSS_HS_FW_DEAD 0xDEAD0000	/* lower 16 bits contain error code */
+
+/* Firmware command codes */
+#define ICSS_HS_CMD_BUSY 0x40000000
+#define ICSS_HS_CMD_DONE 0x80000000
+#define ICSS_HS_CMD_CANCEL 0x10000000
+
+/* Firmware commands */
+#define ICSS_CMD_SPAD 0x20
+#define ICSS_CMD_RXTX 0x10
+#define ICSS_CMD_ADD_FDB 0x1
+#define ICSS_CMD_DEL_FDB 0x2
+#define ICSS_CMD_SET_RUN 0x4
+#define ICSS_CMD_GET_FDB_SLOT 0x5
+#define ICSS_CMD_ENABLE_VLAN 0x5
+#define ICSS_CMD_DISABLE_VLAN 0x6
+#define ICSS_CMD_ADD_FILTER 0x7
+#define ICSS_CMD_ADD_MAC 0x8
+
+/* VLAN Filtering Related MACROs */
+#define PRUETH_DFLT_VLAN_HSR	1
+#define PRUETH_DFLT_VLAN_SW	1
+#define PRUETH_DFLT_VLAN_MAC	0
+#define MAX_VLAN_ID		256
+
+/* In switch mode there are 3 real ports i.e. 3 mac addrs.
+ * however Linux sees only the host side port. The other 2 ports
+ * are the switch ports.
+ * In emac mode there are 2 real ports i.e. 2 mac addrs.
+ * Linux sees both the ports.
+ */
+enum prueth_port {
+	PRUETH_PORT_HOST = 0,	/* host side port */
+	PRUETH_PORT_MII0,	/* physical port RG/SG MII 0 */
+	PRUETH_PORT_MII1,	/* physical port RG/SG MII 1 */
+	PRUETH_PORT_INVALID,	/* Invalid prueth port */
+};
+
+enum prueth_mac {
+	PRUETH_MAC0 = 0,
+	PRUETH_MAC1,
+	PRUETH_NUM_MACS,
+	PRUETH_MAC_INVALID,
+};
+
+struct prueth_tx_chn {
+	struct device *dma_dev;
+	struct napi_struct napi_tx;
+	struct k3_cppi_desc_pool *desc_pool;
+	struct k3_udma_glue_tx_channel *tx_chn;
+	struct prueth_emac *emac;
+	u32 id;
+	u32 descs_num;
+	unsigned int irq;
+	char name[32];
+	struct hrtimer tx_hrtimer;
+	unsigned long tx_pace_timeout_ns;
+	struct xsk_buff_pool *xsk_pool;
+	bool irq_disabled;
+};
+
+struct prueth_rx_chn {
+	struct device *dev;
+	struct device *dma_dev;
+	struct k3_cppi_desc_pool *desc_pool;
+	struct k3_udma_glue_rx_channel *rx_chn;
+	u32 descs_num;
+	unsigned int irq[ICSSG_MAX_RFLOWS];	/* separate irq per flow */
+	char name[32];
+	struct page_pool *pg_pool;
+	struct xdp_rxq_info xdp_rxq;
+	struct xsk_buff_pool *xsk_pool;
+	bool irq_disabled;
+};
+
+enum prueth_swdata_type {
+	PRUETH_SWDATA_INVALID = 0,
+	PRUETH_SWDATA_SKB,
+	PRUETH_SWDATA_PAGE,
+	PRUETH_SWDATA_CMD,
+	PRUETH_SWDATA_XDPF,
+	PRUETH_SWDATA_XSK,
+};
+
+enum prueth_tx_buff_type {
+	PRUETH_TX_BUFF_TYPE_XDP_TX,
+	PRUETH_TX_BUFF_TYPE_XDP_NDO,
+};
+
+struct prueth_swdata {
+	enum prueth_swdata_type type;
+	union prueth_data {
+		struct sk_buff *skb;
+		struct page *page;
+		u32 cmd;
+		struct xdp_frame *xdpf;
+		struct xdp_buff *xdp;
+	} data;
+};
+
+/* There are 4 Tx DMA channels, but the highest priority is CH3 (thread 3)
+ * and lower three are lower priority channels or threads.
+ */
+#define PRUETH_MAX_TX_QUEUES	4
+
+#define PRUETH_MAX_TX_TS_REQUESTS	50 /* Max simultaneous TX_TS requests */
+
+/* XDP BPF state */
+#define ICSSG_XDP_PASS           0
+#define ICSSG_XDP_CONSUMED       BIT(0)
+#define ICSSG_XDP_TX             BIT(1)
+#define ICSSG_XDP_REDIR          BIT(2)
+
+/* Minimum coalesce time in usecs for both Tx and Rx */
+#define ICSSG_MIN_COALESCE_USECS 20
+
+/* data for each emac port */
+struct prueth_emac {
+	bool is_sr1;
+	struct prueth *prueth;
+	struct net_device *ndev;
+	u8 mac_addr[6];
+	struct napi_struct napi_rx;
+	u32 msg_enable;
+
+	int link;
+	int speed;
+	int duplex;
+
+	const char *phy_id;
+	struct device_node *phy_node;
+	phy_interface_t phy_if;
+	enum prueth_port port_id;
+	struct icss_iep *iep;
+	unsigned int rx_ts_enabled : 1;
+	unsigned int tx_ts_enabled : 1;
+	unsigned int half_duplex : 1;
+
+	/* DMA related */
+	struct prueth_tx_chn tx_chns[PRUETH_MAX_TX_QUEUES];
+	struct completion tdown_complete;
+	atomic_t tdown_cnt;
+	struct prueth_rx_chn rx_chns;
+	int rx_flow_id_base;
+	int tx_ch_num;
+
+	/* SR1.0 Management channel */
+	struct prueth_rx_chn rx_mgm_chn;
+	int rx_mgm_flow_id_base;
+
+	spinlock_t lock;	/* serialize access */
+
+	/* TX HW Timestamping */
+	/* TX TS cookie will be index to the tx_ts_skb array */
+	struct sk_buff *tx_ts_skb[PRUETH_MAX_TX_TS_REQUESTS];
+	atomic_t tx_ts_pending;
+	int tx_ts_irq;
+
+	u8 cmd_seq;
+	/* shutdown related */
+	__le32 cmd_data[4];
+	struct completion cmd_complete;
+	/* Mutex to serialize access to firmware command interface */
+	struct mutex cmd_lock;
+	struct work_struct rx_mode_work;
+
+	struct pruss_mem_region dram;
+
+	bool offload_fwd_mark;
+	int port_vlan;
+
+	struct delayed_work stats_work;
+	u64 stats[ICSSG_NUM_MIIG_STATS];
+	u64 pa_stats[ICSSG_NUM_PA_STATS];
+
+	/* RX IRQ Coalescing Related */
+	struct hrtimer rx_hrtimer;
+	unsigned long rx_pace_timeout_ns;
+
+	struct netdev_hw_addr_list vlan_mcast_list[MAX_VLAN_ID];
+	struct bpf_prog *xdp_prog;
+	struct xdp_attachment_info xdpi;
+	int xsk_qid;
+};
+
+/* The buf includes headroom compatible with both skb and xdpf */
+#define PRUETH_HEADROOM_NA (max(XDP_PACKET_HEADROOM, NET_SKB_PAD) + NET_IP_ALIGN)
+#define PRUETH_HEADROOM  ALIGN(PRUETH_HEADROOM_NA, sizeof(long))
+
+/**
+ * struct prueth_pdata - PRUeth platform data
+ * @fdqring_mode: Free desc queue mode
+ * @quirk_10m_link_issue: 10M link detect errata
+ * @switch_mode: switch firmware support
+ * @banked_ms_ram: banked memory support
+ */
+struct prueth_pdata {
+	enum k3_ring_mode fdqring_mode;
+	u32	quirk_10m_link_issue:1;
+	u32	switch_mode:1;
+	u32	banked_ms_ram:1;
+};
+
+struct icssg_firmwares {
+	const char *pru;
+	const char *rtu;
+	const char *txpru;
+};
+
+/**
+ * struct prueth - PRUeth structure
+ * @dev: device
+ * @pruss: pruss handle
+ * @pru: rproc instances of PRUs
+ * @rtu: rproc instances of RTUs
+ * @txpru: rproc instances of TX_PRUs
+ * @shram: PRUSS shared RAM region
+ * @sram_pool: MSMC RAM pool for buffers
+ * @msmcram: MSMC RAM region
+ * @eth_node: DT node for the port
+ * @emac: private EMAC data structure
+ * @registered_netdevs: list of registered netdevs
+ * @miig_rt: regmap to mii_g_rt block
+ * @mii_rt: regmap to mii_rt block
+ * @pa_stats: regmap to pa_stats block
+ * @pru_id: ID for each of the PRUs
+ * @pdev: pointer to ICSSG platform device
+ * @pdata: pointer to platform data for ICSSG driver
+ * @icssg_hwcmdseq: seq counter or HWQ messages
+ * @emacs_initialized: num of EMACs/ext ports that are up/running
+ * @iep0: pointer to IEP0 device
+ * @iep1: pointer to IEP1 device
+ * @vlan_tbl: VLAN-FID table pointer
+ * @hw_bridge_dev: pointer to HW bridge net device
+ * @hsr_dev: pointer to the HSR net device
+ * @hsr_prp_version: enum to store the protocol version of hsr master
+ * @br_members: bitmask of bridge member ports
+ * @hsr_members: bitmask of hsr member ports
+ * @prueth_netdevice_nb: netdevice notifier block
+ * @prueth_switchdev_nb: switchdev notifier block
+ * @prueth_switchdev_bl_nb: switchdev blocking notifier block
+ * @is_switch_mode: flag to indicate if device is in Switch mode
+ * @is_hsr_offload_mode: flag to indicate if device is in hsr offload mode
+ * @is_switchmode_supported: indicates platform support for switch mode
+ * @switch_id: ID for mapping switch ports to bridge
+ * @default_vlan: Default VLAN for host
+ * @icssg_emac_firmwares: Firmware names for EMAC mode, indexed per MAC
+ * @icssg_switch_firmwares: Firmware names for SWITCH mode, indexed per MAC
+ * @icssg_hsr_firmwares: Firmware names for HSR mode, indexed per MAC
+ * @icssg_prp_firmwares: Firmware names for PRP mode, indexed per MAC
+ */
+struct prueth {
+	struct device *dev;
+	struct pruss *pruss;
+	struct rproc *pru[PRUSS_NUM_PRUS];
+	struct rproc *rtu[PRUSS_NUM_PRUS];
+	struct rproc *txpru[PRUSS_NUM_PRUS];
+	struct pruss_mem_region shram;
+	struct gen_pool *sram_pool;
+	struct pruss_mem_region msmcram;
+
+	struct device_node *eth_node[PRUETH_NUM_MACS];
+	struct prueth_emac *emac[PRUETH_NUM_MACS];
+	struct net_device *registered_netdevs[PRUETH_NUM_MACS];
+	struct regmap *miig_rt;
+	struct regmap *mii_rt;
+	struct regmap *pa_stats;
+
+	enum pruss_pru_id pru_id[PRUSS_NUM_PRUS];
+	struct platform_device *pdev;
+	struct prueth_pdata pdata;
+	u8 icssg_hwcmdseq;
+	int emacs_initialized;
+	struct icss_iep *iep0;
+	struct icss_iep *iep1;
+	struct prueth_vlan_tbl *vlan_tbl;
+
+	struct net_device *hw_bridge_dev;
+	struct net_device *hsr_dev;
+	enum hsr_version hsr_prp_version;
+	u8 br_members;
+	u8 hsr_members;
+	struct notifier_block prueth_netdevice_nb;
+	struct notifier_block prueth_switchdev_nb;
+	struct notifier_block prueth_switchdev_bl_nb;
+	bool is_switch_mode;
+	bool is_hsr_offload_mode;
+	bool is_switchmode_supported;
+	unsigned char switch_id[MAX_PHYS_ITEM_ID_LEN];
+	int default_vlan;
+	/** @vtbl_lock: Lock for vtbl in shared memory */
+	spinlock_t vtbl_lock;
+	/** @stats_lock: Lock for reading icssg stats */
+	spinlock_t stats_lock;
+	struct icssg_firmwares icssg_emac_firmwares[PRUETH_NUM_MACS];
+	struct icssg_firmwares icssg_switch_firmwares[PRUETH_NUM_MACS];
+	struct icssg_firmwares icssg_hsr_firmwares[PRUETH_NUM_MACS];
+	struct icssg_firmwares icssg_prp_firmwares[PRUETH_NUM_MACS];
+};
+
+struct emac_tx_ts_response {
+	u32 reserved[2];
+	u32 cookie;
+	u32 lo_ts;
+	u32 hi_ts;
+};
+
+struct emac_tx_ts_response_sr1 {
+	__le32 lo_ts;
+	__le32 hi_ts;
+	__le32 reserved;
+	__le32 cookie;
+};
+
+/* get PRUSS SLICE number from prueth_emac */
+static inline int prueth_emac_slice(struct prueth_emac *emac)
+{
+	switch (emac->port_id) {
+	case PRUETH_PORT_MII0:
+		return ICSS_SLICE0;
+	case PRUETH_PORT_MII1:
+		return ICSS_SLICE1;
+	default:
+		return -EINVAL;
+	}
+}
+
+extern const struct ethtool_ops icssg_ethtool_ops;
+extern const struct dev_pm_ops prueth_dev_pm_ops;
+
+static inline u64 icssg_read_time(const void __iomem *addr)
+{
+	u32 low, high;
+
+	do {
+		high = readl(addr + 4);
+		low = readl(addr);
+	} while (high != readl(addr + 4));
+
+	return low + ((u64)high << 32);
+}
+
+/* Classifier helpers */
+void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac);
+void icssg_class_set_host_mac_addr(struct regmap *miig_rt, const u8 *mac);
+void icssg_class_disable(struct regmap *miig_rt, int slice);
+void icssg_class_default(struct regmap *miig_rt, int slice, bool allmulti,
+			 bool is_sr1);
+void icssg_class_promiscuous_sr1(struct regmap *miig_rt, int slice);
+void icssg_class_add_mcast_sr1(struct regmap *miig_rt, int slice,
+			       struct net_device *ndev);
+void icssg_ft1_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac_addr);
+void icssg_ft3_hsr_configurations(struct regmap *miig_rt, int slice,
+				  struct prueth *prueth);
+
+/* config helpers */
+void icssg_config_ipg(struct prueth_emac *emac);
+int icssg_config(struct prueth *prueth, struct prueth_emac *emac,
+		 int slice);
+int icssg_set_port_state(struct prueth_emac *emac,
+			 enum icssg_port_state_cmd state);
+void icssg_config_set_speed(struct prueth_emac *emac);
+void icssg_config_half_duplex(struct prueth_emac *emac);
+void icssg_init_emac_mode(struct prueth *prueth);
+void icssg_init_fw_offload_mode(struct prueth *prueth);
+
+/* Buffer queue helpers */
+int icssg_queue_pop(struct prueth *prueth, u8 queue);
+void icssg_queue_push(struct prueth *prueth, int queue, u16 addr);
+u32 icssg_queue_level(struct prueth *prueth, int queue);
+
+int icssg_send_fdb_msg(struct prueth_emac *emac, struct mgmt_cmd *cmd,
+		       struct mgmt_cmd_rsp *rsp);
+int icssg_fdb_add_del(struct prueth_emac *emac,  const unsigned char *addr,
+		      u8 vid, u8 fid_c2, bool add);
+int icssg_fdb_lookup(struct prueth_emac *emac, const unsigned char *addr,
+		     u8 vid);
+void icssg_vtbl_modify(struct prueth_emac *emac, u8 vid, u8 port_mask,
+		       u8 untag_mask, bool add);
+u16 icssg_get_pvid(struct prueth_emac *emac);
+void icssg_set_pvid(struct prueth *prueth, u8 vid, u8 port);
+int emac_fdb_flow_id_updated(struct prueth_emac *emac);
+#define prueth_napi_to_tx_chn(pnapi) \
+	container_of(pnapi, struct prueth_tx_chn, napi_tx)
+
+void icssg_stats_work_handler(struct work_struct *work);
+void emac_update_hardware_stats(struct prueth_emac *emac);
+int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name);
+
+/* Common functions */
+void prueth_cleanup_rx_chns(struct prueth_emac *emac,
+			    struct prueth_rx_chn *rx_chn,
+			    int max_rflows);
+void prueth_cleanup_tx_chns(struct prueth_emac *emac);
+void prueth_ndev_del_tx_napi(struct prueth_emac *emac, int num);
+void prueth_xmit_free(struct prueth_tx_chn *tx_chn,
+		      struct cppi5_host_desc_t *desc);
+int emac_tx_complete_packets(struct prueth_emac *emac, int chn,
+			     int budget, bool *tdown);
+int prueth_ndev_add_tx_napi(struct prueth_emac *emac);
+int prueth_init_tx_chns(struct prueth_emac *emac);
+int prueth_init_rx_chns(struct prueth_emac *emac,
+			struct prueth_rx_chn *rx_chn,
+			char *name, u32 max_rflows,
+			u32 max_desc_num);
+int prueth_dma_rx_push_mapped(struct prueth_emac *emac,
+			      struct prueth_rx_chn *rx_chn,
+			      struct page *page, u32 buf_len);
+unsigned int prueth_rxbuf_total_len(unsigned int len);
+void emac_rx_timestamp(struct prueth_emac *emac,
+		       struct sk_buff *skb, u32 *psdata);
+enum netdev_tx icssg_ndo_start_xmit(struct sk_buff *skb, struct net_device *ndev);
+irqreturn_t prueth_rx_irq(int irq, void *dev_id);
+void prueth_cleanup_tx_ts(struct prueth_emac *emac);
+int icssg_napi_rx_poll(struct napi_struct *napi_rx, int budget);
+int prueth_prepare_rx_chan(struct prueth_emac *emac,
+			   struct prueth_rx_chn *chn,
+			   int buf_size);
+void prueth_reset_tx_chan(struct prueth_emac *emac, int ch_num,
+			  bool free_skb);
+void prueth_reset_rx_chan(struct prueth_rx_chn *chn,
+			  int num_flows, bool disable);
+void icssg_ndo_tx_timeout(struct net_device *ndev, unsigned int txqueue);
+int icssg_ndo_get_ts_config(struct net_device *ndev,
+			    struct kernel_hwtstamp_config *config);
+int icssg_ndo_set_ts_config(struct net_device *ndev,
+			    struct kernel_hwtstamp_config *config,
+			    struct netlink_ext_ack *extack);
+void icssg_ndo_get_stats64(struct net_device *ndev,
+			   struct rtnl_link_stats64 *stats);
+int icssg_ndo_get_phys_port_name(struct net_device *ndev, char *name,
+				 size_t len);
+int prueth_node_port(struct device_node *eth_node);
+int prueth_node_mac(struct device_node *eth_node);
+void prueth_netdev_exit(struct prueth *prueth,
+			struct device_node *eth_node);
+int prueth_get_cores(struct prueth *prueth, int slice, bool is_sr1);
+void prueth_put_cores(struct prueth *prueth, int slice);
+
+/* Revision specific helper */
+u64 icssg_ts_to_ns(u32 hi_sw, u32 hi, u32 lo, u32 cycle_time_ns);
+u32 emac_xmit_xdp_frame(struct prueth_emac *emac,
+			struct xdp_frame *xdpf,
+			unsigned int q_idx,
+			enum prueth_tx_buff_type buff_type);
+void prueth_rx_cleanup(void *data, dma_addr_t desc_dma);
+void prueth_tx_cleanup(void *data, dma_addr_t desc_dma);
+int prueth_xsk_wakeup(struct net_device *ndev, u32 qid, u32 flags);
+static inline bool prueth_xdp_is_enabled(struct prueth_emac *emac)
+{
+	return !!READ_ONCE(emac->xdp_prog);
+}
+
+#endif /* __NET_TI_ICSSG_PRUETH_H */

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_queues.c

@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0
+/* ICSSG Buffer queue helpers
+ *
+ * Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com
+ */
+
+#include <linux/regmap.h>
+#include "icssg_prueth.h"
+
+#define ICSSG_QUEUES_MAX		64
+#define ICSSG_QUEUE_OFFSET		0xd00
+#define ICSSG_QUEUE_PEEK_OFFSET		0xe00
+#define ICSSG_QUEUE_CNT_OFFSET		0xe40
+#define	ICSSG_QUEUE_RESET_OFFSET	0xf40
+
+int icssg_queue_pop(struct prueth *prueth, u8 queue)
+{
+	u32 val, cnt;
+
+	if (queue >= ICSSG_QUEUES_MAX)
+		return -EINVAL;
+
+	regmap_read(prueth->miig_rt, ICSSG_QUEUE_CNT_OFFSET + 4 * queue, &cnt);
+	if (!cnt)
+		return -EINVAL;
+
+	regmap_read(prueth->miig_rt, ICSSG_QUEUE_OFFSET + 4 * queue, &val);
+
+	return val;
+}
+EXPORT_SYMBOL_GPL(icssg_queue_pop);
+
+void icssg_queue_push(struct prueth *prueth, int queue, u16 addr)
+{
+	if (queue >= ICSSG_QUEUES_MAX)
+		return;
+
+	regmap_write(prueth->miig_rt, ICSSG_QUEUE_OFFSET + 4 * queue, addr);
+}
+EXPORT_SYMBOL_GPL(icssg_queue_push);
+
+u32 icssg_queue_level(struct prueth *prueth, int queue)
+{
+	u32 reg;
+
+	if (queue >= ICSSG_QUEUES_MAX)
+		return 0;
+
+	regmap_read(prueth->miig_rt, ICSSG_QUEUE_CNT_OFFSET + 4 * queue, &reg);
+
+	return reg;
+}

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_stats.c

@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Texas Instruments ICSSG Ethernet driver
+ *
+ * Copyright (C) 2018-2021 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#include "icssg_prueth.h"
+#include "icssg_stats.h"
+#include <linux/regmap.h>
+
+#define ICSSG_TX_PACKET_OFFSET	0xA0
+#define ICSSG_TX_BYTE_OFFSET	0xEC
+
+static u32 stats_base[] = {	0x54c,	/* Slice 0 stats start */
+				0xb18,	/* Slice 1 stats start */
+};
+
+void emac_update_hardware_stats(struct prueth_emac *emac)
+{
+	struct prueth *prueth = emac->prueth;
+	int slice = prueth_emac_slice(emac);
+	u32 base = stats_base[slice];
+	u32 tx_pkt_cnt = 0;
+	u32 val, reg;
+	int i;
+
+	spin_lock(&prueth->stats_lock);
+
+	for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) {
+		/* In MII mode TX lines are swapped inside ICSSG, so read Tx stats
+		 * from slice1 for port0 and slice0 for port1 to get accurate Tx
+		 * stats for a given port
+		 */
+		if (emac->phy_if == PHY_INTERFACE_MODE_MII &&
+		    icssg_all_miig_stats[i].offset >= ICSSG_TX_PACKET_OFFSET &&
+		    icssg_all_miig_stats[i].offset <= ICSSG_TX_BYTE_OFFSET)
+			base = stats_base[slice ^ 1];
+		regmap_read(prueth->miig_rt,
+			    base + icssg_all_miig_stats[i].offset,
+			    &val);
+		regmap_write(prueth->miig_rt,
+			     base + icssg_all_miig_stats[i].offset,
+			     val);
+
+		if (icssg_all_miig_stats[i].offset == ICSSG_TX_PACKET_OFFSET)
+			tx_pkt_cnt = val;
+
+		emac->stats[i] += val;
+		if (icssg_all_miig_stats[i].offset == ICSSG_TX_BYTE_OFFSET)
+			emac->stats[i] -= tx_pkt_cnt * 8;
+	}
+
+	if (prueth->pa_stats) {
+		for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) {
+			reg = icssg_all_pa_stats[i].offset +
+			      slice * sizeof(u32);
+			regmap_read(prueth->pa_stats, reg, &val);
+			emac->pa_stats[i] += val;
+		}
+	}
+
+	spin_unlock(&prueth->stats_lock);
+}
+
+void icssg_stats_work_handler(struct work_struct *work)
+{
+	struct prueth_emac *emac = container_of(work, struct prueth_emac,
+						stats_work.work);
+	emac_update_hardware_stats(emac);
+
+	queue_delayed_work(system_long_wq, &emac->stats_work,
+			   msecs_to_jiffies((STATS_TIME_LIMIT_1G_MS * 1000) / emac->speed));
+}
+EXPORT_SYMBOL_GPL(icssg_stats_work_handler);
+
+int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(icssg_all_miig_stats); i++) {
+		if (!strcmp(icssg_all_miig_stats[i].name, stat_name))
+			return emac->stats[icssg_all_miig_stats[i].offset / sizeof(u32)];
+	}
+
+	if (emac->prueth->pa_stats) {
+		for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) {
+			if (!strcmp(icssg_all_pa_stats[i].name, stat_name))
+				return emac->pa_stats[i];
+		}
+	}
+
+	netdev_err(emac->ndev, "Invalid stats %s\n", stat_name);
+	return -EINVAL;
+}

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_stats.h

@@ -0,0 +1,204 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Texas Instruments ICSSG Ethernet driver
+ *
+ * Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#ifndef __NET_TI_ICSSG_STATS_H
+#define __NET_TI_ICSSG_STATS_H
+
+#include "icssg_prueth.h"
+
+#define STATS_TIME_LIMIT_1G_MS    25000    /* 25 seconds @ 1G */
+
+struct miig_stats_regs {
+	/* Rx */
+	u32 rx_packets;
+	u32 rx_broadcast_frames;
+	u32 rx_multicast_frames;
+	u32 rx_crc_errors;
+	u32 rx_mii_error_frames;
+	u32 rx_odd_nibble_frames;
+	u32 rx_frame_max_size;
+	u32 rx_max_size_error_frames;
+	u32 rx_frame_min_size;
+	u32 rx_min_size_error_frames;
+	u32 rx_over_errors;
+	u32 rx_class0_hits;
+	u32 rx_class1_hits;
+	u32 rx_class2_hits;
+	u32 rx_class3_hits;
+	u32 rx_class4_hits;
+	u32 rx_class5_hits;
+	u32 rx_class6_hits;
+	u32 rx_class7_hits;
+	u32 rx_class8_hits;
+	u32 rx_class9_hits;
+	u32 rx_class10_hits;
+	u32 rx_class11_hits;
+	u32 rx_class12_hits;
+	u32 rx_class13_hits;
+	u32 rx_class14_hits;
+	u32 rx_class15_hits;
+	u32 rx_smd_frags;
+	u32 rx_bucket1_size;
+	u32 rx_bucket2_size;
+	u32 rx_bucket3_size;
+	u32 rx_bucket4_size;
+	u32 rx_64B_frames;
+	u32 rx_bucket1_frames;
+	u32 rx_bucket2_frames;
+	u32 rx_bucket3_frames;
+	u32 rx_bucket4_frames;
+	u32 rx_bucket5_frames;
+	u32 rx_bytes;
+	u32 rx_tx_total_bytes;
+	/* Tx */
+	u32 tx_packets;
+	u32 tx_broadcast_frames;
+	u32 tx_multicast_frames;
+	u32 tx_odd_nibble_frames;
+	u32 tx_underflow_errors;
+	u32 tx_frame_max_size;
+	u32 tx_max_size_error_frames;
+	u32 tx_frame_min_size;
+	u32 tx_min_size_error_frames;
+	u32 tx_bucket1_size;
+	u32 tx_bucket2_size;
+	u32 tx_bucket3_size;
+	u32 tx_bucket4_size;
+	u32 tx_64B_frames;
+	u32 tx_bucket1_frames;
+	u32 tx_bucket2_frames;
+	u32 tx_bucket3_frames;
+	u32 tx_bucket4_frames;
+	u32 tx_bucket5_frames;
+	u32 tx_bytes;
+};
+
+#define ICSSG_MIIG_STATS(field, stats_type)			\
+{							\
+	#field,						\
+	offsetof(struct miig_stats_regs, field),	\
+	stats_type					\
+}
+
+struct icssg_miig_stats {
+	char name[ETH_GSTRING_LEN];
+	u32 offset;
+	bool standard_stats;
+};
+
+static const struct icssg_miig_stats icssg_all_miig_stats[] = {
+	/* Rx */
+	ICSSG_MIIG_STATS(rx_packets, true),
+	ICSSG_MIIG_STATS(rx_broadcast_frames, false),
+	ICSSG_MIIG_STATS(rx_multicast_frames, true),
+	ICSSG_MIIG_STATS(rx_crc_errors, true),
+	ICSSG_MIIG_STATS(rx_mii_error_frames, false),
+	ICSSG_MIIG_STATS(rx_odd_nibble_frames, false),
+	ICSSG_MIIG_STATS(rx_frame_max_size, true),
+	ICSSG_MIIG_STATS(rx_max_size_error_frames, false),
+	ICSSG_MIIG_STATS(rx_frame_min_size, true),
+	ICSSG_MIIG_STATS(rx_min_size_error_frames, false),
+	ICSSG_MIIG_STATS(rx_over_errors, true),
+	ICSSG_MIIG_STATS(rx_class0_hits, false),
+	ICSSG_MIIG_STATS(rx_class1_hits, false),
+	ICSSG_MIIG_STATS(rx_class2_hits, false),
+	ICSSG_MIIG_STATS(rx_class3_hits, false),
+	ICSSG_MIIG_STATS(rx_class4_hits, false),
+	ICSSG_MIIG_STATS(rx_class5_hits, false),
+	ICSSG_MIIG_STATS(rx_class6_hits, false),
+	ICSSG_MIIG_STATS(rx_class7_hits, false),
+	ICSSG_MIIG_STATS(rx_class8_hits, false),
+	ICSSG_MIIG_STATS(rx_class9_hits, false),
+	ICSSG_MIIG_STATS(rx_class10_hits, false),
+	ICSSG_MIIG_STATS(rx_class11_hits, false),
+	ICSSG_MIIG_STATS(rx_class12_hits, false),
+	ICSSG_MIIG_STATS(rx_class13_hits, false),
+	ICSSG_MIIG_STATS(rx_class14_hits, false),
+	ICSSG_MIIG_STATS(rx_class15_hits, false),
+	ICSSG_MIIG_STATS(rx_smd_frags, false),
+	ICSSG_MIIG_STATS(rx_bucket1_size, true),
+	ICSSG_MIIG_STATS(rx_bucket2_size, true),
+	ICSSG_MIIG_STATS(rx_bucket3_size, true),
+	ICSSG_MIIG_STATS(rx_bucket4_size, true),
+	ICSSG_MIIG_STATS(rx_64B_frames, true),
+	ICSSG_MIIG_STATS(rx_bucket1_frames, true),
+	ICSSG_MIIG_STATS(rx_bucket2_frames, true),
+	ICSSG_MIIG_STATS(rx_bucket3_frames, true),
+	ICSSG_MIIG_STATS(rx_bucket4_frames, true),
+	ICSSG_MIIG_STATS(rx_bucket5_frames, true),
+	ICSSG_MIIG_STATS(rx_bytes, true),
+	ICSSG_MIIG_STATS(rx_tx_total_bytes, false),
+	/* Tx */
+	ICSSG_MIIG_STATS(tx_packets, true),
+	ICSSG_MIIG_STATS(tx_broadcast_frames, false),
+	ICSSG_MIIG_STATS(tx_multicast_frames, false),
+	ICSSG_MIIG_STATS(tx_odd_nibble_frames, false),
+	ICSSG_MIIG_STATS(tx_underflow_errors, false),
+	ICSSG_MIIG_STATS(tx_frame_max_size, true),
+	ICSSG_MIIG_STATS(tx_max_size_error_frames, false),
+	ICSSG_MIIG_STATS(tx_frame_min_size, true),
+	ICSSG_MIIG_STATS(tx_min_size_error_frames, false),
+	ICSSG_MIIG_STATS(tx_bucket1_size, true),
+	ICSSG_MIIG_STATS(tx_bucket2_size, true),
+	ICSSG_MIIG_STATS(tx_bucket3_size, true),
+	ICSSG_MIIG_STATS(tx_bucket4_size, true),
+	ICSSG_MIIG_STATS(tx_64B_frames, true),
+	ICSSG_MIIG_STATS(tx_bucket1_frames, true),
+	ICSSG_MIIG_STATS(tx_bucket2_frames, true),
+	ICSSG_MIIG_STATS(tx_bucket3_frames, true),
+	ICSSG_MIIG_STATS(tx_bucket4_frames, true),
+	ICSSG_MIIG_STATS(tx_bucket5_frames, true),
+	ICSSG_MIIG_STATS(tx_bytes, true),
+};
+
+#define ICSSG_PA_STATS(field)	\
+{				\
+	#field,			\
+	field,			\
+}
+
+struct icssg_pa_stats {
+	char name[ETH_GSTRING_LEN];
+	u32 offset;
+};
+
+static const struct icssg_pa_stats icssg_all_pa_stats[] = {
+	ICSSG_PA_STATS(FW_RTU_PKT_DROP),
+	ICSSG_PA_STATS(FW_Q0_OVERFLOW),
+	ICSSG_PA_STATS(FW_Q1_OVERFLOW),
+	ICSSG_PA_STATS(FW_Q2_OVERFLOW),
+	ICSSG_PA_STATS(FW_Q3_OVERFLOW),
+	ICSSG_PA_STATS(FW_Q4_OVERFLOW),
+	ICSSG_PA_STATS(FW_Q5_OVERFLOW),
+	ICSSG_PA_STATS(FW_Q6_OVERFLOW),
+	ICSSG_PA_STATS(FW_Q7_OVERFLOW),
+	ICSSG_PA_STATS(FW_DROPPED_PKT),
+	ICSSG_PA_STATS(FW_RX_ERROR),
+	ICSSG_PA_STATS(FW_RX_DS_INVALID),
+	ICSSG_PA_STATS(FW_TX_DROPPED_PACKET),
+	ICSSG_PA_STATS(FW_TX_TS_DROPPED_PACKET),
+	ICSSG_PA_STATS(FW_INF_PORT_DISABLED),
+	ICSSG_PA_STATS(FW_INF_SAV),
+	ICSSG_PA_STATS(FW_INF_SA_DL),
+	ICSSG_PA_STATS(FW_INF_PORT_BLOCKED),
+	ICSSG_PA_STATS(FW_INF_DROP_TAGGED),
+	ICSSG_PA_STATS(FW_INF_DROP_PRIOTAGGED),
+	ICSSG_PA_STATS(FW_INF_DROP_NOTAG),
+	ICSSG_PA_STATS(FW_INF_DROP_NOTMEMBER),
+	ICSSG_PA_STATS(FW_RX_EOF_SHORT_FRMERR),
+	ICSSG_PA_STATS(FW_RX_B0_DROP_EARLY_EOF),
+	ICSSG_PA_STATS(FW_TX_JUMBO_FRM_CUTOFF),
+	ICSSG_PA_STATS(FW_RX_EXP_FRAG_Q_DROP),
+	ICSSG_PA_STATS(FW_RX_FIFO_OVERRUN),
+	ICSSG_PA_STATS(FW_CUT_THR_PKT),
+	ICSSG_PA_STATS(FW_HOST_RX_PKT_CNT),
+	ICSSG_PA_STATS(FW_HOST_TX_PKT_CNT),
+	ICSSG_PA_STATS(FW_HOST_EGRESS_Q_PRE_OVERFLOW),
+	ICSSG_PA_STATS(FW_HOST_EGRESS_Q_EXP_OVERFLOW),
+};
+
+#endif /* __NET_TI_ICSSG_STATS_H */

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_switch_map.h

@@ -0,0 +1,270 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Texas Instruments ICSSG Ethernet driver
+ *
+ * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#ifndef __NET_TI_ICSSG_SWITCH_MAP_H
+#define __NET_TI_ICSSG_SWITCH_MAP_H
+
+/************************* Ethernet Switch Constants *********************/
+
+/* if bucket size is changed in firmware then this too should be changed
+ * because it directly impacts FDB ageing calculation
+ */
+#define NUMBER_OF_FDB_BUCKET_ENTRIES            (4)
+
+/* This is fixed in ICSSG */
+#define SIZE_OF_FDB                             (2048)
+
+#define FW_LINK_SPEED_1G                           (0x00)
+#define FW_LINK_SPEED_100M                         (0x01)
+#define FW_LINK_SPEED_10M                          (0x02)
+#define FW_LINK_SPEED_HD                           (0x80)
+
+/* Time after which FDB entries are checked for aged out values.
+ * Values are in nanoseconds
+ */
+#define FDB_AGEING_TIMEOUT_OFFSET                          0x0014
+
+/* Default VLAN tag for Host Port */
+#define HOST_PORT_DF_VLAN_OFFSET                           0x001C
+
+/* Same as HOST_PORT_DF_VLAN_OFFSET */
+#define EMAC_ICSSG_SWITCH_PORT0_DEFAULT_VLAN_OFFSET        HOST_PORT_DF_VLAN_OFFSET
+
+/* Default VLAN tag for P1 Port */
+#define P1_PORT_DF_VLAN_OFFSET                             0x0020
+
+/* Same as P1_PORT_DF_VLAN_OFFSET */
+#define EMAC_ICSSG_SWITCH_PORT1_DEFAULT_VLAN_OFFSET        P1_PORT_DF_VLAN_OFFSET
+
+/* default VLAN tag for P2 Port */
+#define P2_PORT_DF_VLAN_OFFSET                             0x0024
+
+/* Same as P2_PORT_DF_VLAN_OFFSET */
+#define EMAC_ICSSG_SWITCH_PORT2_DEFAULT_VLAN_OFFSET        P2_PORT_DF_VLAN_OFFSET
+
+/* VLAN-FID Table offset. 4096 VIDs. 2B per VID = 8KB = 0x2000 */
+#define VLAN_STATIC_REG_TABLE_OFFSET                       0x0100
+
+/* VLAN-FID Table offset for EMAC  */
+#define EMAC_ICSSG_SWITCH_DEFAULT_VLAN_TABLE_OFFSET        VLAN_STATIC_REG_TABLE_OFFSET
+
+/* Packet descriptor Q reserved memory */
+#define PORT_DESC0_HI                                      0x2104
+
+/* Packet descriptor Q reserved memory */
+#define PORT_DESC0_LO                                      0x2F6C
+
+/* Packet descriptor Q reserved memory */
+#define PORT_DESC1_HI                                      0x3DD4
+
+/* Packet descriptor Q reserved memory */
+#define PORT_DESC1_LO                                      0x4C3C
+
+/* Packet descriptor Q reserved memory */
+#define HOST_DESC0_HI                                      0x5AA4
+
+/* Packet descriptor Q reserved memory */
+#define HOST_DESC0_LO                                      0x5F0C
+
+/* Packet descriptor Q reserved memory */
+#define HOST_DESC1_HI                                      0x6374
+
+/* Packet descriptor Q reserved memory */
+#define HOST_DESC1_LO                                      0x67DC
+
+/* Special packet descriptor Q reserved memory */
+#define HOST_SPPD0                                         0x7AAC
+
+/* Special acket descriptor Q reserved memory */
+#define HOST_SPPD1                                         0x7EAC
+
+/* IEP count cycle counter*/
+#define TIMESYNC_FW_WC_CYCLECOUNT_OFFSET                   0x83EC
+
+/* IEP count hi roll over count */
+#define TIMESYNC_FW_WC_HI_ROLLOVER_COUNT_OFFSET            0x83F4
+
+/* IEP count hi sw counter */
+#define TIMESYNC_FW_WC_COUNT_HI_SW_OFFSET_OFFSET           0x83F8
+
+/* Set clock descriptor */
+#define TIMESYNC_FW_WC_SETCLOCK_DESC_OFFSET                0x83FC
+
+/* IEP count syncout reduction factor */
+#define TIMESYNC_FW_WC_SYNCOUT_REDUCTION_FACTOR_OFFSET     0x843C
+
+/* IEP count syncout reduction counter */
+#define TIMESYNC_FW_WC_SYNCOUT_REDUCTION_COUNT_OFFSET      0x8440
+
+/* IEP count syncout start time cycle counter */
+#define TIMESYNC_FW_WC_SYNCOUT_START_TIME_CYCLECOUNT_OFFSET 0x8444
+
+/* Control variable to generate SYNC1 */
+#define TIMESYNC_FW_WC_ISOM_PIN_SIGNAL_EN_OFFSET           0x844C
+
+/* SystemTime Sync0 periodicity */
+#define TIMESYNC_FW_ST_SYNCOUT_PERIOD_OFFSET               0x8450
+
+/* pktTxDelay for P1 = link speed dependent p1 mac delay + p1 phy delay */
+#define TIMESYNC_FW_WC_PKTTXDELAY_P1_OFFSET                0x8454
+
+/* pktTxDelay for P2 = link speed dependent p2 mac delay + p2 phy delay */
+#define TIMESYNC_FW_WC_PKTTXDELAY_P2_OFFSET                0x8458
+
+/* Set clock operation done signal for next task */
+#define TIMESYNC_FW_SIG_PNFW_OFFSET                        0x845C
+
+/* Set clock operation done signal for next task */
+#define TIMESYNC_FW_SIG_TIMESYNCFW_OFFSET                  0x8460
+
+/* New list is copied at this time */
+#define TAS_CONFIG_CHANGE_TIME                             0x000C
+
+/* config change error counter */
+#define TAS_CONFIG_CHANGE_ERROR_COUNTER                    0x0014
+
+/* TAS List update pending flag */
+#define TAS_CONFIG_PENDING                                 0x0018
+
+/* TAS list update trigger flag */
+#define TAS_CONFIG_CHANGE                                  0x0019
+
+/* List length for new TAS schedule */
+#define TAS_ADMIN_LIST_LENGTH                              0x001A
+
+/* Currently active TAS list index */
+#define TAS_ACTIVE_LIST_INDEX                              0x001B
+
+/* Cycle time for the new TAS schedule */
+#define TAS_ADMIN_CYCLE_TIME                               0x001C
+
+/* Cycle counts remaining till the TAS list update */
+#define TAS_CONFIG_CHANGE_CYCLE_COUNT                      0x0020
+
+/* Base Flow ID for sending  Packets to Host for Slice0 */
+#define PSI_L_REGULAR_FLOW_ID_BASE_OFFSET                  0x0024
+
+/* Same as PSI_L_REGULAR_FLOW_ID_BASE_OFFSET */
+#define EMAC_ICSSG_SWITCH_PSI_L_REGULAR_FLOW_ID_BASE_OFFSET PSI_L_REGULAR_FLOW_ID_BASE_OFFSET
+
+/* Base Flow ID for sending mgmt and Tx TS to Host for Slice0 */
+#define PSI_L_MGMT_FLOW_ID_OFFSET                          0x0026
+
+/* Same as PSI_L_MGMT_FLOW_ID_OFFSET */
+#define EMAC_ICSSG_SWITCH_PSI_L_MGMT_FLOW_ID_BASE_OFFSET   PSI_L_MGMT_FLOW_ID_OFFSET
+
+/* Queue number for Special  Packets written here */
+#define SPL_PKT_DEFAULT_PRIORITY                           0x0028
+
+/* Express Preemptible Queue Mask */
+#define EXPRESS_PRE_EMPTIVE_Q_MASK                         0x0029
+
+/* Port1/Port2 Default Queue number for untagged  Packets, only 1B is used */
+#define QUEUE_NUM_UNTAGGED                                 0x002A
+
+/* Stores the table used for priority regeneration. 1B per PCP/Queue */
+#define PORT_Q_PRIORITY_REGEN_OFFSET                       0x002C
+
+/* For marking Packet as priority/express (this feature is disabled) or
+ * cut-through/S&F.
+ */
+#define EXPRESS_PRE_EMPTIVE_Q_MAP                          0x0034
+
+/* Stores the table used for priority mapping. 1B per PCP/Queue */
+#define PORT_Q_PRIORITY_MAPPING_OFFSET                     0x003C
+
+/* Used to notify the FW of the current link speed */
+#define PORT_LINK_SPEED_OFFSET                             0x00A8
+
+/* 2k memory pointer reserved for default writes by PRU0*/
+#define DEFAULT_MSMC_Q_OFFSET                              0x00AC
+
+/* TAS gate mask for windows list0 */
+#define TAS_GATE_MASK_LIST0                                0x0100
+
+/* TAS gate mask for windows list1 */
+#define TAS_GATE_MASK_LIST1                                0x0350
+
+/* Memory to Enable/Disable Preemption on TX side */
+#define PRE_EMPTION_ENABLE_TX                              0x05A0
+
+/* Active State of Preemption on TX side */
+#define PRE_EMPTION_ACTIVE_TX                              0x05A1
+
+/* Memory to Enable/Disable Verify State Machine Preemption */
+#define PRE_EMPTION_ENABLE_VERIFY                          0x05A2
+
+/* Verify Status of State Machine */
+#define PRE_EMPTION_VERIFY_STATUS                          0x05A3
+
+/* Non Final Fragment Size supported by Link Partner */
+#define PRE_EMPTION_ADD_FRAG_SIZE_REMOTE                   0x05A4
+
+/* Non Final Fragment Size supported by Firmware */
+#define PRE_EMPTION_ADD_FRAG_SIZE_LOCAL                    0x05A6
+
+/* Time in ms the State machine waits for respond Packet */
+#define PRE_EMPTION_VERIFY_TIME                            0x05A8
+
+/* Memory used for R30 related management commands */
+#define MGR_R30_CMD_OFFSET                                 0x05AC
+
+/* HW Buffer Pool0 base address */
+#define BUFFER_POOL_0_ADDR_OFFSET                          0x05BC
+
+/* 16B for Host Egress MSMC Q (Pre-emptible) context */
+#define HOST_RX_Q_PRE_CONTEXT_OFFSET                       0x0684
+
+/* Buffer for 8 FDB entries to be added by 'Add Multiple FDB entries IOCTL' */
+#define FDB_CMD_BUFFER                                     0x0894
+
+/* TAS queue max sdu length list */
+#define TAS_QUEUE_MAX_SDU_LIST                             0x08FA
+
+/* Used by FW to generate random number with the SEED value */
+#define HD_RAND_SEED_OFFSET                                0x0934
+
+/* 16B for Host Egress MSMC Q (Express) context */
+#define HOST_RX_Q_EXP_CONTEXT_OFFSET                       0x0940
+
+/* Start of 32 bits PA_STAT counters */
+#define PA_STAT_32b_START_OFFSET                           0x0080
+
+#define FW_RTU_PKT_DROP			0x0088
+#define FW_Q0_OVERFLOW			0x0090
+#define FW_Q1_OVERFLOW			0x0098
+#define FW_Q2_OVERFLOW			0x00A0
+#define FW_Q3_OVERFLOW			0x00A8
+#define FW_Q4_OVERFLOW			0x00B0
+#define FW_Q5_OVERFLOW			0x00B8
+#define FW_Q6_OVERFLOW			0x00C0
+#define FW_Q7_OVERFLOW			0x00C8
+#define FW_DROPPED_PKT			0x00F8
+#define FW_RX_ERROR			0x0100
+#define FW_RX_DS_INVALID		0x0108
+#define FW_TX_DROPPED_PACKET		0x0110
+#define FW_TX_TS_DROPPED_PACKET		0x0118
+#define FW_INF_PORT_DISABLED		0x0120
+#define FW_INF_SAV			0x0128
+#define FW_INF_SA_DL			0x0130
+#define FW_INF_PORT_BLOCKED		0x0138
+#define FW_INF_DROP_TAGGED		0x0140
+#define FW_INF_DROP_PRIOTAGGED		0x0148
+#define FW_INF_DROP_NOTAG		0x0150
+#define FW_INF_DROP_NOTMEMBER		0x0158
+#define FW_RX_EOF_SHORT_FRMERR		0x0188
+#define FW_RX_B0_DROP_EARLY_EOF		0x0190
+#define FW_TX_JUMBO_FRM_CUTOFF		0x0198
+#define FW_RX_EXP_FRAG_Q_DROP		0x01A0
+#define FW_RX_FIFO_OVERRUN		0x01A8
+#define FW_CUT_THR_PKT			0x01B0
+#define FW_HOST_RX_PKT_CNT		0x0248
+#define FW_HOST_TX_PKT_CNT		0x0250
+#define FW_HOST_EGRESS_Q_PRE_OVERFLOW	0x0258
+#define FW_HOST_EGRESS_Q_EXP_OVERFLOW	0x0260
+
+#endif /* __NET_TI_ICSSG_SWITCH_MAP_H  */

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_switchdev.c

@@ -0,0 +1,477 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/* Texas Instruments K3 ICSSG Ethernet Switchdev Driver
+ *
+ * Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com/
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/if_bridge.h>
+#include <linux/netdevice.h>
+#include <linux/workqueue.h>
+#include <net/switchdev.h>
+
+#include "icssg_prueth.h"
+#include "icssg_switchdev.h"
+#include "icssg_mii_rt.h"
+
+struct prueth_switchdev_event_work {
+	struct work_struct work;
+	struct switchdev_notifier_fdb_info fdb_info;
+	struct prueth_emac *emac;
+	unsigned long event;
+};
+
+static int prueth_switchdev_stp_state_set(struct prueth_emac *emac,
+					  u8 state)
+{
+	enum icssg_port_state_cmd emac_state;
+	int ret = 0;
+
+	switch (state) {
+	case BR_STATE_FORWARDING:
+		emac_state = ICSSG_EMAC_PORT_FORWARD;
+		break;
+	case BR_STATE_DISABLED:
+		emac_state = ICSSG_EMAC_PORT_DISABLE;
+		break;
+	case BR_STATE_LISTENING:
+	case BR_STATE_BLOCKING:
+		emac_state = ICSSG_EMAC_PORT_BLOCK;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	icssg_set_port_state(emac, emac_state);
+	netdev_dbg(emac->ndev, "STP state: %u\n", emac_state);
+
+	return ret;
+}
+
+static int prueth_switchdev_attr_br_flags_set(struct prueth_emac *emac,
+					      struct net_device *orig_dev,
+					      struct switchdev_brport_flags brport_flags)
+{
+	enum icssg_port_state_cmd emac_state;
+
+	if (brport_flags.mask & BR_MCAST_FLOOD)
+		emac_state = ICSSG_EMAC_PORT_MC_FLOODING_ENABLE;
+	else
+		emac_state = ICSSG_EMAC_PORT_MC_FLOODING_DISABLE;
+
+	netdev_dbg(emac->ndev, "BR_MCAST_FLOOD: %d port %u\n",
+		   emac_state, emac->port_id);
+
+	icssg_set_port_state(emac, emac_state);
+
+	return 0;
+}
+
+static int prueth_switchdev_attr_br_flags_pre_set(struct net_device *netdev,
+						  struct switchdev_brport_flags brport_flags)
+{
+	if (brport_flags.mask & ~(BR_LEARNING | BR_MCAST_FLOOD))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int prueth_switchdev_attr_set(struct net_device *ndev, const void *ctx,
+				     const struct switchdev_attr *attr,
+				     struct netlink_ext_ack *extack)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	int ret;
+
+	netdev_dbg(ndev, "attr: id %u port: %u\n", attr->id, emac->port_id);
+
+	switch (attr->id) {
+	case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
+		ret = prueth_switchdev_attr_br_flags_pre_set(ndev,
+							     attr->u.brport_flags);
+		break;
+	case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
+		ret = prueth_switchdev_stp_state_set(emac,
+						     attr->u.stp_state);
+		netdev_dbg(ndev, "stp state: %u\n", attr->u.stp_state);
+		break;
+	case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
+		ret = prueth_switchdev_attr_br_flags_set(emac, attr->orig_dev,
+							 attr->u.brport_flags);
+		break;
+	default:
+		ret = -EOPNOTSUPP;
+		break;
+	}
+
+	return ret;
+}
+
+static void prueth_switchdev_fdb_offload_notify(struct net_device *ndev,
+						struct switchdev_notifier_fdb_info *rcv)
+{
+	struct switchdev_notifier_fdb_info info;
+
+	memset(&info, 0, sizeof(info));
+	info.addr = rcv->addr;
+	info.vid = rcv->vid;
+	info.offloaded = true;
+	call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED,
+				 ndev, &info.info, NULL);
+}
+
+static void prueth_switchdev_event_work(struct work_struct *work)
+{
+	struct prueth_switchdev_event_work *switchdev_work =
+		container_of(work, struct prueth_switchdev_event_work, work);
+	struct prueth_emac *emac = switchdev_work->emac;
+	struct switchdev_notifier_fdb_info *fdb;
+	int port_id = emac->port_id;
+	int ret;
+
+	rtnl_lock();
+	switch (switchdev_work->event) {
+	case SWITCHDEV_FDB_ADD_TO_DEVICE:
+		fdb = &switchdev_work->fdb_info;
+
+		netdev_dbg(emac->ndev, "prueth_fdb_add: MACID = %pM vid = %u flags = %u %u -- port %d\n",
+			   fdb->addr, fdb->vid, fdb->added_by_user,
+			   fdb->offloaded, port_id);
+
+		if (!fdb->added_by_user)
+			break;
+		if (!ether_addr_equal(emac->mac_addr, fdb->addr))
+			break;
+
+		ret = icssg_fdb_add_del(emac, fdb->addr, fdb->vid,
+					BIT(port_id), true);
+		if (!ret)
+			prueth_switchdev_fdb_offload_notify(emac->ndev, fdb);
+		break;
+	case SWITCHDEV_FDB_DEL_TO_DEVICE:
+		fdb = &switchdev_work->fdb_info;
+
+		netdev_dbg(emac->ndev, "prueth_fdb_del: MACID = %pM vid = %u flags = %u %u -- port %d\n",
+			   fdb->addr, fdb->vid, fdb->added_by_user,
+			   fdb->offloaded, port_id);
+
+		if (!fdb->added_by_user)
+			break;
+		if (!ether_addr_equal(emac->mac_addr, fdb->addr))
+			break;
+		icssg_fdb_add_del(emac, fdb->addr, fdb->vid,
+				  BIT(port_id), false);
+		break;
+	default:
+		break;
+	}
+	rtnl_unlock();
+
+	kfree(switchdev_work->fdb_info.addr);
+	kfree(switchdev_work);
+	dev_put(emac->ndev);
+}
+
+static int prueth_switchdev_event(struct notifier_block *unused,
+				  unsigned long event, void *ptr)
+{
+	struct net_device *ndev = switchdev_notifier_info_to_dev(ptr);
+	struct prueth_switchdev_event_work *switchdev_work;
+	struct switchdev_notifier_fdb_info *fdb_info = ptr;
+	struct prueth_emac *emac = netdev_priv(ndev);
+	int err;
+
+	if (!prueth_dev_check(ndev))
+		return NOTIFY_DONE;
+
+	if (event == SWITCHDEV_PORT_ATTR_SET) {
+		err = switchdev_handle_port_attr_set(ndev, ptr,
+						     prueth_dev_check,
+						     prueth_switchdev_attr_set);
+		return notifier_from_errno(err);
+	}
+
+	switchdev_work = kzalloc_obj(*switchdev_work, GFP_ATOMIC);
+	if (WARN_ON(!switchdev_work))
+		return NOTIFY_BAD;
+
+	INIT_WORK(&switchdev_work->work, prueth_switchdev_event_work);
+	switchdev_work->emac = emac;
+	switchdev_work->event = event;
+
+	switch (event) {
+	case SWITCHDEV_FDB_ADD_TO_DEVICE:
+	case SWITCHDEV_FDB_DEL_TO_DEVICE:
+		memcpy(&switchdev_work->fdb_info, ptr,
+		       sizeof(switchdev_work->fdb_info));
+		switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
+		if (!switchdev_work->fdb_info.addr)
+			goto err_addr_alloc;
+		ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
+				fdb_info->addr);
+		dev_hold(ndev);
+		break;
+	default:
+		kfree(switchdev_work);
+		return NOTIFY_DONE;
+	}
+
+	queue_work(system_long_wq, &switchdev_work->work);
+
+	return NOTIFY_DONE;
+
+err_addr_alloc:
+	kfree(switchdev_work);
+	return NOTIFY_BAD;
+}
+
+static int prueth_switchdev_vlan_add(struct prueth_emac *emac, bool untag, bool pvid,
+				     u8 vid, struct net_device *orig_dev)
+{
+	bool cpu_port = netif_is_bridge_master(orig_dev);
+	int untag_mask = 0;
+	int port_mask;
+	int ret = 0;
+
+	if (cpu_port)
+		port_mask = BIT(PRUETH_PORT_HOST);
+	else
+		port_mask = BIT(emac->port_id);
+
+	if (untag)
+		untag_mask = port_mask;
+
+	icssg_vtbl_modify(emac, vid, port_mask, untag_mask, true);
+
+	netdev_dbg(emac->ndev, "VID add vid:%u port_mask:%X untag_mask %X PVID %d\n",
+		   vid, port_mask, untag_mask, pvid);
+
+	if (!pvid)
+		return ret;
+
+	icssg_set_pvid(emac->prueth, vid, emac->port_id);
+
+	return ret;
+}
+
+static int prueth_switchdev_vlan_del(struct prueth_emac *emac, u16 vid,
+				     struct net_device *orig_dev)
+{
+	bool cpu_port = netif_is_bridge_master(orig_dev);
+	int port_mask;
+	int ret = 0;
+
+	if (cpu_port)
+		port_mask = BIT(PRUETH_PORT_HOST);
+	else
+		port_mask = BIT(emac->port_id);
+
+	icssg_vtbl_modify(emac, vid, port_mask, 0, false);
+
+	if (cpu_port)
+		icssg_fdb_add_del(emac, emac->mac_addr, vid,
+				  BIT(PRUETH_PORT_HOST), false);
+
+	if (vid == icssg_get_pvid(emac))
+		icssg_set_pvid(emac->prueth, 0, emac->port_id);
+
+	netdev_dbg(emac->ndev, "VID del vid:%u port_mask:%X\n",
+		   vid, port_mask);
+
+	return ret;
+}
+
+static int prueth_switchdev_vlans_add(struct prueth_emac *emac,
+				      const struct switchdev_obj_port_vlan *vlan)
+{
+	bool untag = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
+	struct net_device *orig_dev = vlan->obj.orig_dev;
+	bool cpu_port = netif_is_bridge_master(orig_dev);
+	bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
+
+	netdev_dbg(emac->ndev, "VID add vid:%u flags:%X\n",
+		   vlan->vid, vlan->flags);
+
+	if (cpu_port && !(vlan->flags & BRIDGE_VLAN_INFO_BRENTRY))
+		return 0;
+
+	if (vlan->vid > 0xff)
+		return 0;
+
+	return prueth_switchdev_vlan_add(emac, untag, pvid, vlan->vid,
+					 orig_dev);
+}
+
+static int prueth_switchdev_vlans_del(struct prueth_emac *emac,
+				      const struct switchdev_obj_port_vlan *vlan)
+{
+	if (vlan->vid > 0xff)
+		return 0;
+
+	return prueth_switchdev_vlan_del(emac, vlan->vid,
+					 vlan->obj.orig_dev);
+}
+
+static int prueth_switchdev_mdb_add(struct prueth_emac *emac,
+				    struct switchdev_obj_port_mdb *mdb)
+{
+	struct net_device *orig_dev = mdb->obj.orig_dev;
+	u8 port_mask, fid_c2;
+	bool cpu_port;
+	int err;
+
+	cpu_port = netif_is_bridge_master(orig_dev);
+
+	if (cpu_port)
+		port_mask = BIT(PRUETH_PORT_HOST);
+	else
+		port_mask = BIT(emac->port_id);
+
+	fid_c2 = icssg_fdb_lookup(emac, mdb->addr, mdb->vid);
+
+	err = icssg_fdb_add_del(emac, mdb->addr, mdb->vid, fid_c2 | port_mask, true);
+	netdev_dbg(emac->ndev, "MDB add vid %u:%pM  ports: %X\n",
+		   mdb->vid, mdb->addr, port_mask);
+
+	return err;
+}
+
+static int prueth_switchdev_mdb_del(struct prueth_emac *emac,
+				    struct switchdev_obj_port_mdb *mdb)
+{
+	struct net_device *orig_dev = mdb->obj.orig_dev;
+	int del_mask, ret, fid_c2;
+	bool cpu_port;
+
+	cpu_port = netif_is_bridge_master(orig_dev);
+
+	if (cpu_port)
+		del_mask = BIT(PRUETH_PORT_HOST);
+	else
+		del_mask = BIT(emac->port_id);
+
+	fid_c2 = icssg_fdb_lookup(emac, mdb->addr, mdb->vid);
+
+	if (fid_c2 & ~del_mask)
+		ret = icssg_fdb_add_del(emac, mdb->addr, mdb->vid, fid_c2 & ~del_mask, true);
+	else
+		ret = icssg_fdb_add_del(emac, mdb->addr, mdb->vid, 0, false);
+
+	netdev_dbg(emac->ndev, "MDB del vid %u:%pM  ports: %X\n",
+		   mdb->vid, mdb->addr, del_mask);
+
+	return ret;
+}
+
+static int prueth_switchdev_obj_add(struct net_device *ndev, const void *ctx,
+				    const struct switchdev_obj *obj,
+				    struct netlink_ext_ack *extack)
+{
+	struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
+	struct switchdev_obj_port_mdb *mdb = SWITCHDEV_OBJ_PORT_MDB(obj);
+	struct prueth_emac *emac = netdev_priv(ndev);
+	int err = 0;
+
+	netdev_dbg(ndev, "obj_add: id %u port: %u\n", obj->id, emac->port_id);
+
+	switch (obj->id) {
+	case SWITCHDEV_OBJ_ID_PORT_VLAN:
+		err = prueth_switchdev_vlans_add(emac, vlan);
+		break;
+	case SWITCHDEV_OBJ_ID_PORT_MDB:
+	case SWITCHDEV_OBJ_ID_HOST_MDB:
+		err = prueth_switchdev_mdb_add(emac, mdb);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+
+	return err;
+}
+
+static int prueth_switchdev_obj_del(struct net_device *ndev, const void *ctx,
+				    const struct switchdev_obj *obj)
+{
+	struct switchdev_obj_port_vlan *vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
+	struct switchdev_obj_port_mdb *mdb = SWITCHDEV_OBJ_PORT_MDB(obj);
+	struct prueth_emac *emac = netdev_priv(ndev);
+	int err = 0;
+
+	netdev_dbg(ndev, "obj_del: id %u port: %u\n", obj->id, emac->port_id);
+
+	switch (obj->id) {
+	case SWITCHDEV_OBJ_ID_PORT_VLAN:
+		err = prueth_switchdev_vlans_del(emac, vlan);
+		break;
+	case SWITCHDEV_OBJ_ID_PORT_MDB:
+	case SWITCHDEV_OBJ_ID_HOST_MDB:
+		err = prueth_switchdev_mdb_del(emac, mdb);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+		break;
+	}
+
+	return err;
+}
+
+static int prueth_switchdev_blocking_event(struct notifier_block *unused,
+					   unsigned long event, void *ptr)
+{
+	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
+	int err;
+
+	switch (event) {
+	case SWITCHDEV_PORT_OBJ_ADD:
+		err = switchdev_handle_port_obj_add(dev, ptr,
+						    prueth_dev_check,
+						    prueth_switchdev_obj_add);
+		return notifier_from_errno(err);
+	case SWITCHDEV_PORT_OBJ_DEL:
+		err = switchdev_handle_port_obj_del(dev, ptr,
+						    prueth_dev_check,
+						    prueth_switchdev_obj_del);
+		return notifier_from_errno(err);
+	case SWITCHDEV_PORT_ATTR_SET:
+		err = switchdev_handle_port_attr_set(dev, ptr,
+						     prueth_dev_check,
+						     prueth_switchdev_attr_set);
+		return notifier_from_errno(err);
+	default:
+		break;
+	}
+
+	return NOTIFY_DONE;
+}
+
+int prueth_switchdev_register_notifiers(struct prueth *prueth)
+{
+	int ret = 0;
+
+	prueth->prueth_switchdev_nb.notifier_call = &prueth_switchdev_event;
+	ret = register_switchdev_notifier(&prueth->prueth_switchdev_nb);
+	if (ret) {
+		dev_err(prueth->dev, "register switchdev notifier fail ret:%d\n",
+			ret);
+		return ret;
+	}
+
+	prueth->prueth_switchdev_bl_nb.notifier_call = &prueth_switchdev_blocking_event;
+	ret = register_switchdev_blocking_notifier(&prueth->prueth_switchdev_bl_nb);
+	if (ret) {
+		dev_err(prueth->dev, "register switchdev blocking notifier ret:%d\n",
+			ret);
+		unregister_switchdev_notifier(&prueth->prueth_switchdev_nb);
+	}
+
+	return ret;
+}
+
+void prueth_switchdev_unregister_notifiers(struct prueth *prueth)
+{
+	unregister_switchdev_blocking_notifier(&prueth->prueth_switchdev_bl_nb);
+	unregister_switchdev_notifier(&prueth->prueth_switchdev_nb);
+}

linux-7.2.3/drivers/net/ethernet/ti/icssg/icssg_switchdev.h

@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com/
+ */
+#ifndef __NET_TI_ICSSG_SWITCHDEV_H
+#define __NET_TI_ICSSG_SWITCHDEV_H
+
+#include "icssg_prueth.h"
+
+int prueth_switchdev_register_notifiers(struct prueth *prueth);
+void prueth_switchdev_unregister_notifiers(struct prueth *prueth);
+bool prueth_dev_check(const struct net_device *ndev);
+
+#endif /* __NET_TI_ICSSG_SWITCHDEV_H */