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* Marvell 88E6xxx Ethernet switch single-chip definition
* Copyright (c) 2008 Marvell Semiconductor
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
#ifndef _MV88E6XXX_CHIP_H
#define _MV88E6XXX_CHIP_H
#include <linux/if_vlan.h>
#include <linux/irq.h>
#include <linux/gpio/consumer.h>
#include <linux/phy.h>
#include <net/dsa.h>
#ifndef UINT64_MAX
#define UINT64_MAX (u64)(~((u64)0))
#define SMI_CMD 0x00
#define SMI_CMD_BUSY BIT(15)
#define SMI_CMD_CLAUSE_22 BIT(12)
#define SMI_CMD_OP_22_WRITE ((1 << 10) | SMI_CMD_BUSY | SMI_CMD_CLAUSE_22)
#define SMI_CMD_OP_22_READ ((2 << 10) | SMI_CMD_BUSY | SMI_CMD_CLAUSE_22)
#define SMI_CMD_OP_45_WRITE_ADDR ((0 << 10) | SMI_CMD_BUSY)
#define SMI_CMD_OP_45_WRITE_DATA ((1 << 10) | SMI_CMD_BUSY)
#define SMI_CMD_OP_45_READ_DATA ((2 << 10) | SMI_CMD_BUSY)
#define SMI_CMD_OP_45_READ_DATA_INC ((3 << 10) | SMI_CMD_BUSY)
#define SMI_DATA 0x01
#define MV88E6XXX_N_FID 4096
/* PVT limits for 4-bit port and 5-bit switch */
#define MV88E6XXX_MAX_PVT_PORTS 16
enum mv88e6xxx_egress_mode {
enum mv88e6xxx_frame_mode {
/* List of supported models */
enum mv88e6xxx_model {
enum mv88e6xxx_family {
MV88E6XXX_FAMILY_6065, /* 6031 6035 6061 6065 */
MV88E6XXX_FAMILY_6095, /* 6092 6095 */
MV88E6XXX_FAMILY_6097, /* 6046 6085 6096 6097 */
MV88E6XXX_FAMILY_6165, /* 6123 6161 6165 */
MV88E6XXX_FAMILY_6185, /* 6108 6121 6122 6131 6152 6155 6182 6185 */
MV88E6XXX_FAMILY_6320, /* 6320 6321 */
MV88E6XXX_FAMILY_6341, /* 6141 6341 */
MV88E6XXX_FAMILY_6351, /* 6171 6175 6350 6351 */
MV88E6XXX_FAMILY_6352, /* 6172 6176 6240 6352 */
MV88E6XXX_FAMILY_6390, /* 6190 6190X 6191 6290 6390 6390X */
struct mv88e6xxx_ops;
struct mv88e6xxx_info {
enum mv88e6xxx_family family;
u16 prod_num;
const char *name;
unsigned int num_databases;
unsigned int num_ports;
unsigned int max_vid;
unsigned int port_base_addr;
unsigned int global1_addr;
unsigned int global2_addr;
unsigned int age_time_coeff;
unsigned int g1_irqs;
unsigned int g2_irqs;
bool pvt;
/* Multi-chip Addressing Mode.
* Some chips respond to only 2 registers of its own SMI device address
* when it is non-zero, and use indirect access to internal registers.
bool multi_chip;
enum dsa_tag_protocol tag_protocol;
/* Mask for FromPort and ToPort value of PortVec used in ATU Move
* operation. 0 means that the ATU Move operation is not supported.
u8 atu_move_port_mask;
const struct mv88e6xxx_ops *ops;
struct mv88e6xxx_atu_entry {
u8 state;
bool trunk;
u16 portvec;
u8 mac[ETH_ALEN];
struct mv88e6xxx_vtu_entry {
u16 vid;
u16 fid;
u8 sid;
bool valid;
u8 member[DSA_MAX_PORTS];
u8 state[DSA_MAX_PORTS];
struct mv88e6xxx_bus_ops;
struct mv88e6xxx_irq_ops;
struct mv88e6xxx_irq {
u16 masked;
struct irq_chip chip;
struct irq_domain *domain;
unsigned int nirqs;
struct mv88e6xxx_chip {
const struct mv88e6xxx_info *info;
/* The dsa_switch this private structure is related to */
struct dsa_switch *ds;
/* The device this structure is associated to */
struct device *dev;
/* This mutex protects the access to the switch registers */
struct mutex reg_lock;
/* The MII bus and the address on the bus that is used to
* communication with the switch
const struct mv88e6xxx_bus_ops *smi_ops;
struct mii_bus *bus;
int sw_addr;
/* Handles automatic disabling and re-enabling of the PHY
* polling unit.
const struct mv88e6xxx_bus_ops *phy_ops;
struct mutex ppu_mutex;
int ppu_disabled;
struct work_struct ppu_work;
struct timer_list ppu_timer;
/* This mutex serialises access to the statistics unit.
* Hold this mutex over snapshot + dump sequences.
struct mutex stats_mutex;
/* A switch may have a GPIO line tied to its reset pin. Parse
* this from the device tree, and use it before performing
* switch soft reset.
struct gpio_desc *reset;
/* set to size of eeprom if supported by the switch */
int eeprom_len;
/* List of mdio busses */
struct list_head mdios;
/* There can be two interrupt controllers, which are chained
* off a GPIO as interrupt source
struct mv88e6xxx_irq g1_irq;
struct mv88e6xxx_irq g2_irq;
int irq;
int device_irq;
int watchdog_irq;
struct mv88e6xxx_bus_ops {
int (*read)(struct mv88e6xxx_chip *chip, int addr, int reg, u16 *val);
int (*write)(struct mv88e6xxx_chip *chip, int addr, int reg, u16 val);
struct mv88e6xxx_mdio_bus {
struct mii_bus *bus;
struct mv88e6xxx_chip *chip;
struct list_head list;
bool external;
struct mv88e6xxx_ops {
/* Ingress Rate Limit unit (IRL) operations */
int (*irl_init_all)(struct mv88e6xxx_chip *chip, int port);
int (*get_eeprom)(struct mv88e6xxx_chip *chip,
struct ethtool_eeprom *eeprom, u8 *data);
int (*set_eeprom)(struct mv88e6xxx_chip *chip,
struct ethtool_eeprom *eeprom, u8 *data);
int (*set_switch_mac)(struct mv88e6xxx_chip *chip, u8 *addr);
int (*phy_read)(struct mv88e6xxx_chip *chip,
struct mii_bus *bus,
int addr, int reg, u16 *val);
int (*phy_write)(struct mv88e6xxx_chip *chip,
struct mii_bus *bus,
int addr, int reg, u16 val);
/* Priority Override Table operations */
int (*pot_clear)(struct mv88e6xxx_chip *chip);
/* PHY Polling Unit (PPU) operations */
int (*ppu_enable)(struct mv88e6xxx_chip *chip);
int (*ppu_disable)(struct mv88e6xxx_chip *chip);
/* Switch Software Reset */
int (*reset)(struct mv88e6xxx_chip *chip);
/* RGMII Receive/Transmit Timing Control
* Add delay on PHY_INTERFACE_MODE_RGMII_*ID, no delay otherwise.
int (*port_set_rgmii_delay)(struct mv88e6xxx_chip *chip, int port,
phy_interface_t mode);
#define LINK_FORCED_UP 1
#define LINK_UNFORCED -2
/* Port's MAC link state
* Use LINK_FORCED_UP or LINK_FORCED_DOWN to force link up or down,
* or LINK_UNFORCED for normal link detection.
int (*port_set_link)(struct mv88e6xxx_chip *chip, int port, int link);
/* Port's MAC duplex mode
* Use DUPLEX_HALF or DUPLEX_FULL to force half or full duplex,
* or DUPLEX_UNFORCED for normal duplex detection.
int (*port_set_duplex)(struct mv88e6xxx_chip *chip, int port, int dup);
/* Port's MAC speed (in Mbps)
* Depending on the chip, 10, 100, 200, 1000, 2500, 10000 are valid.
* Use SPEED_UNFORCED for normal detection, SPEED_MAX for max value.
int (*port_set_speed)(struct mv88e6xxx_chip *chip, int port, int speed);
int (*port_tag_remap)(struct mv88e6xxx_chip *chip, int port);
int (*port_set_frame_mode)(struct mv88e6xxx_chip *chip, int port,
enum mv88e6xxx_frame_mode mode);
int (*port_set_egress_floods)(struct mv88e6xxx_chip *chip, int port,
bool unicast, bool multicast);
int (*port_set_ether_type)(struct mv88e6xxx_chip *chip, int port,
u16 etype);
int (*port_set_jumbo_size)(struct mv88e6xxx_chip *chip, int port,
size_t size);
int (*port_egress_rate_limiting)(struct mv88e6xxx_chip *chip, int port);
int (*port_pause_limit)(struct mv88e6xxx_chip *chip, int port, u8 in,
u8 out);
int (*port_disable_learn_limit)(struct mv88e6xxx_chip *chip, int port);
int (*port_disable_pri_override)(struct mv88e6xxx_chip *chip, int port);
/* CMODE control what PHY mode the MAC will use, eg. SGMII, RGMII, etc.
* Some chips allow this to be configured on specific ports.
int (*port_set_cmode)(struct mv88e6xxx_chip *chip, int port,
phy_interface_t mode);
/* Some devices have a per port register indicating what is
* the upstream port this port should forward to.
int (*port_set_upstream_port)(struct mv88e6xxx_chip *chip, int port,
int upstream_port);
/* Snapshot the statistics for a port. The statistics can then
* be read back a leisure but still with a consistent view.
int (*stats_snapshot)(struct mv88e6xxx_chip *chip, int port);
/* Set the histogram mode for statistics, when the control registers
* are separated out of the STATS_OP register.
int (*stats_set_histogram)(struct mv88e6xxx_chip *chip);
/* Return the number of strings describing statistics */
int (*stats_get_sset_count)(struct mv88e6xxx_chip *chip);
void (*stats_get_strings)(struct mv88e6xxx_chip *chip, uint8_t *data);
void (*stats_get_stats)(struct mv88e6xxx_chip *chip, int port,
uint64_t *data);
int (*set_cpu_port)(struct mv88e6xxx_chip *chip, int port);
int (*set_egress_port)(struct mv88e6xxx_chip *chip, int port);
const struct mv88e6xxx_irq_ops *watchdog_ops;
int (*mgmt_rsvd2cpu)(struct mv88e6xxx_chip *chip);
/* Power on/off a SERDES interface */
int (*serdes_power)(struct mv88e6xxx_chip *chip, int port, bool on);
/* VLAN Translation Unit operations */
int (*vtu_getnext)(struct mv88e6xxx_chip *chip,
struct mv88e6xxx_vtu_entry *entry);
int (*vtu_loadpurge)(struct mv88e6xxx_chip *chip,
struct mv88e6xxx_vtu_entry *entry);
struct mv88e6xxx_irq_ops {
/* Action to be performed when the interrupt happens */
int (*irq_action)(struct mv88e6xxx_chip *chip, int irq);
/* Setup the hardware to generate the interrupt */
int (*irq_setup)(struct mv88e6xxx_chip *chip);
/* Reset the hardware to stop generating the interrupt */
void (*irq_free)(struct mv88e6xxx_chip *chip);
struct mv88e6xxx_hw_stat {
char string[ETH_GSTRING_LEN];
int sizeof_stat;
int reg;
int type;
static inline bool mv88e6xxx_has_pvt(struct mv88e6xxx_chip *chip)
return chip->info->pvt;
static inline unsigned int mv88e6xxx_num_databases(struct mv88e6xxx_chip *chip)
return chip->info->num_databases;
static inline unsigned int mv88e6xxx_num_ports(struct mv88e6xxx_chip *chip)
return chip->info->num_ports;
static inline u16 mv88e6xxx_port_mask(struct mv88e6xxx_chip *chip)
return GENMASK(mv88e6xxx_num_ports(chip) - 1, 0);
int mv88e6xxx_read(struct mv88e6xxx_chip *chip, int addr, int reg, u16 *val);
int mv88e6xxx_write(struct mv88e6xxx_chip *chip, int addr, int reg, u16 val);
int mv88e6xxx_update(struct mv88e6xxx_chip *chip, int addr, int reg,
u16 update);
int mv88e6xxx_wait(struct mv88e6xxx_chip *chip, int addr, int reg, u16 mask);
struct mii_bus *mv88e6xxx_default_mdio_bus(struct mv88e6xxx_chip *chip);
#endif /* _MV88E6XXX_CHIP_H */