path: root/drivers/net/dsa/microchip/ksz_common.h

/* SPDX-License-Identifier: GPL-2.0 */
/* Microchip switch driver common header
 *
 * Copyright (C) 2017-2019 Microchip Technology Inc.
 */

#ifndef __KSZ_COMMON_H
#define __KSZ_COMMON_H

#include <linux/etherdevice.h>
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/phy.h>
#include <linux/regmap.h>
#include <net/dsa.h>
#include <linux/irq.h>

#include "ksz_ptp.h"

#define KSZ_MAX_NUM_PORTS 8

struct ksz_device;
struct ksz_port;

enum ksz_regmap_width {
	KSZ_REGMAP_8,
	KSZ_REGMAP_16,
	KSZ_REGMAP_32,
	__KSZ_NUM_REGMAPS,
};

struct vlan_table {
	u32 table[3];
};

struct ksz_port_mib {
	struct mutex cnt_mutex;		/* structure access */
	u8 cnt_ptr;
	u64 *counters;
	struct rtnl_link_stats64 stats64;
	struct ethtool_pause_stats pause_stats;
	struct spinlock stats64_lock;
};

struct ksz_mib_names {
	int index;
	char string[ETH_GSTRING_LEN];
};

struct ksz_chip_data {
	u32 chip_id;
	const char *dev_name;
	int num_vlans;
	int num_alus;
	int num_statics;
	int cpu_ports;
	int port_cnt;
	u8 port_nirqs;
	u8 num_tx_queues;
	bool tc_cbs_supported;
	bool tc_ets_supported;
	const struct ksz_dev_ops *ops;
	bool ksz87xx_eee_link_erratum;
	const struct ksz_mib_names *mib_names;
	int mib_cnt;
	u8 reg_mib_cnt;
	const u16 *regs;
	const u32 *masks;
	const u8 *shifts;
	const u8 *xmii_ctrl0;
	const u8 *xmii_ctrl1;
	int stp_ctrl_reg;
	int broadcast_ctrl_reg;
	int multicast_ctrl_reg;
	int start_ctrl_reg;
	bool supports_mii[KSZ_MAX_NUM_PORTS];
	bool supports_rmii[KSZ_MAX_NUM_PORTS];
	bool supports_rgmii[KSZ_MAX_NUM_PORTS];
	bool internal_phy[KSZ_MAX_NUM_PORTS];
	bool gbit_capable[KSZ_MAX_NUM_PORTS];
	const struct regmap_access_table *wr_table;
	const struct regmap_access_table *rd_table;
};

struct ksz_irq {
	u16 masked;
	u16 reg_mask;
	u16 reg_status;
	struct irq_domain *domain;
	int nirqs;
	int irq_num;
	char name[16];
	struct ksz_device *dev;
};

struct ksz_ptp_irq {
	struct ksz_port *port;
	u16 ts_reg;
	bool ts_en;
	char name[16];
	int num;
};

struct ksz_port {
	bool remove_tag;		/* Remove Tag flag set, for ksz8795 only */
	bool learning;
	int stp_state;
	struct phy_device phydev;

	u32 fiber:1;			/* port is fiber */
	u32 force:1;
	u32 read:1;			/* read MIB counters in background */
	u32 freeze:1;			/* MIB counter freeze is enabled */

	struct ksz_port_mib mib;
	phy_interface_t interface;
	u32 rgmii_tx_val;
	u32 rgmii_rx_val;
	struct ksz_device *ksz_dev;
	void *acl_priv;
	struct ksz_irq pirq;
	u8 num;
#if IS_ENABLED(CONFIG_NET_DSA_MICROCHIP_KSZ_PTP)
	struct hwtstamp_config tstamp_config;
	bool hwts_tx_en;
	bool hwts_rx_en;
	struct ksz_irq ptpirq;
	struct ksz_ptp_irq ptpmsg_irq[3];
	ktime_t tstamp_msg;
	struct completion tstamp_msg_comp;
#endif
};

struct ksz_device {
	struct dsa_switch *ds;
	struct ksz_platform_data *pdata;
	const struct ksz_chip_data *info;

	struct mutex dev_mutex;		/* device access */
	struct mutex regmap_mutex;	/* regmap access */
	struct mutex alu_mutex;		/* ALU access */
	struct mutex vlan_mutex;	/* vlan access */
	const struct ksz_dev_ops *dev_ops;

	struct device *dev;
	struct regmap *regmap[__KSZ_NUM_REGMAPS];

	void *priv;
	int irq;

	struct gpio_desc *reset_gpio;	/* Optional reset GPIO */

	/* chip specific data */
	u32 chip_id;
	u8 chip_rev;
	int cpu_port;			/* port connected to CPU */
	int phy_port_cnt;
	phy_interface_t compat_interface;
	bool synclko_125;
	bool synclko_disable;

	struct vlan_table *vlan_cache;

	struct ksz_port *ports;
	struct delayed_work mib_read;
	unsigned long mib_read_interval;
	u16 mirror_rx;
	u16 mirror_tx;
	u16 port_mask;
	struct mutex lock_irq;		/* IRQ Access */
	struct ksz_irq girq;
	struct ksz_ptp_data ptp_data;
};

/* List of supported models */
enum ksz_model {
	KSZ8563,
	KSZ8795,
	KSZ8794,
	KSZ8765,
	KSZ8830,
	KSZ9477,
	KSZ9896,
	KSZ9897,
	KSZ9893,
	KSZ9563,
	KSZ9567,
	LAN9370,
	LAN9371,
	LAN9372,
	LAN9373,
	LAN9374,
};

enum ksz_chip_id {
	KSZ8563_CHIP_ID = 0x8563,
	KSZ8795_CHIP_ID = 0x8795,
	KSZ8794_CHIP_ID = 0x8794,
	KSZ8765_CHIP_ID = 0x8765,
	KSZ8830_CHIP_ID = 0x8830,
	KSZ9477_CHIP_ID = 0x00947700,
	KSZ9896_CHIP_ID = 0x00989600,
	KSZ9897_CHIP_ID = 0x00989700,
	KSZ9893_CHIP_ID = 0x00989300,
	KSZ9563_CHIP_ID = 0x00956300,
	KSZ9567_CHIP_ID = 0x00956700,
	LAN9370_CHIP_ID = 0x00937000,
	LAN9371_CHIP_ID = 0x00937100,
	LAN9372_CHIP_ID = 0x00937200,
	LAN9373_CHIP_ID = 0x00937300,
	LAN9374_CHIP_ID = 0x00937400,
};

enum ksz_regs {
	REG_IND_CTRL_0,
	REG_IND_DATA_8,
	REG_IND_DATA_CHECK,
	REG_IND_DATA_HI,
	REG_IND_DATA_LO,
	REG_IND_MIB_CHECK,
	REG_IND_BYTE,
	P_FORCE_CTRL,
	P_LINK_STATUS,
	P_LOCAL_CTRL,
	P_NEG_RESTART_CTRL,
	P_REMOTE_STATUS,
	P_SPEED_STATUS,
	S_TAIL_TAG_CTRL,
	P_STP_CTRL,
	S_START_CTRL,
	S_BROADCAST_CTRL,
	S_MULTICAST_CTRL,
	P_XMII_CTRL_0,
	P_XMII_CTRL_1,
};

enum ksz_masks {
	PORT_802_1P_REMAPPING,
	SW_TAIL_TAG_ENABLE,
	MIB_COUNTER_OVERFLOW,
	MIB_COUNTER_VALID,
	VLAN_TABLE_FID,
	VLAN_TABLE_MEMBERSHIP,
	VLAN_TABLE_VALID,
	STATIC_MAC_TABLE_VALID,
	STATIC_MAC_TABLE_USE_FID,
	STATIC_MAC_TABLE_FID,
	STATIC_MAC_TABLE_OVERRIDE,
	STATIC_MAC_TABLE_FWD_PORTS,
	DYNAMIC_MAC_TABLE_ENTRIES_H,
	DYNAMIC_MAC_TABLE_MAC_EMPTY,
	DYNAMIC_MAC_TABLE_NOT_READY,
	DYNAMIC_MAC_TABLE_ENTRIES,
	DYNAMIC_MAC_TABLE_FID,
	DYNAMIC_MAC_TABLE_SRC_PORT,
	DYNAMIC_MAC_TABLE_TIMESTAMP,
	ALU_STAT_WRITE,
	ALU_STAT_READ,
	P_MII_TX_FLOW_CTRL,
	P_MII_RX_FLOW_CTRL,
};

enum ksz_shifts {
	VLAN_TABLE_MEMBERSHIP_S,
	VLAN_TABLE,
	STATIC_MAC_FWD_PORTS,
	STATIC_MAC_FID,
	DYNAMIC_MAC_ENTRIES_H,
	DYNAMIC_MAC_ENTRIES,
	DYNAMIC_MAC_FID,
	DYNAMIC_MAC_TIMESTAMP,
	DYNAMIC_MAC_SRC_PORT,
	ALU_STAT_INDEX,
};

enum ksz_xmii_ctrl0 {
	P_MII_100MBIT,
	P_MII_10MBIT,
	P_MII_FULL_DUPLEX,
	P_MII_HALF_DUPLEX,
};

enum ksz_xmii_ctrl1 {
	P_RGMII_SEL,
	P_RMII_SEL,
	P_GMII_SEL,
	P_MII_SEL,
	P_GMII_1GBIT,
	P_GMII_NOT_1GBIT,
};

struct alu_struct {
	/* entry 1 */
	u8	is_static:1;
	u8	is_src_filter:1;
	u8	is_dst_filter:1;
	u8	prio_age:3;
	u32	_reserv_0_1:23;
	u8	mstp:3;
	/* entry 2 */
	u8	is_override:1;
	u8	is_use_fid:1;
	u32	_reserv_1_1:23;
	u8	port_forward:7;
	/* entry 3 & 4*/
	u32	_reserv_2_1:9;
	u8	fid:7;
	u8	mac[ETH_ALEN];
};

struct ksz_dev_ops {
	int (*setup)(struct dsa_switch *ds);
	void (*teardown)(struct dsa_switch *ds);
	u32 (*get_port_addr)(int port, int offset);
	void (*cfg_port_member)(struct ksz_device *dev, int port, u8 member);
	void (*flush_dyn_mac_table)(struct ksz_device *dev, int port);
	void (*port_cleanup)(struct ksz_device *dev, int port);
	void (*port_setup)(struct ksz_device *dev, int port, bool cpu_port);
	int (*set_ageing_time)(struct ksz_device *dev, unsigned int msecs);
	int (*r_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
	int (*w_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 val);
	void (*r_mib_cnt)(struct ksz_device *dev, int port, u16 ad