linux/drivers/net/dsa/mv88e6xxx/global2_avb.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Marvell 88E6xxx Switch Global 2 Registers support
 *
 * Copyright (c) 2008 Marvell Semiconductor
 *
 * Copyright (c) 2016-2017 Savoir-faire Linux Inc.
 *	Vivien Didelot <[email protected]>
 *
 * Copyright (c) 2017 National Instruments
 *	Brandon Streiff <[email protected]>
 */

#include <linux/bitfield.h>

#include "global2.h"

/* Offset 0x16: AVB Command Register
 * Offset 0x17: AVB Data Register
 *
 * There are two different versions of this register interface:
 *    "6352": 3-bit "op" field, 4-bit "port" field.
 *    "6390": 2-bit "op" field, 5-bit "port" field.
 *
 * The "op" codes are different between the two, as well as the special
 * port fields for global PTP and TAI configuration.
 */

/* mv88e6xxx_g2_avb_read -- Read one or multiple 16-bit words.
 * The hardware supports snapshotting up to four contiguous registers.
 */
static int mv88e6xxx_g2_avb_wait(struct mv88e6xxx_chip *chip)
{ … }

static int mv88e6xxx_g2_avb_read(struct mv88e6xxx_chip *chip, u16 readop,
				 u16 *data, int len)
{ … }

/* mv88e6xxx_g2_avb_write -- Write one 16-bit word. */
static int mv88e6xxx_g2_avb_write(struct mv88e6xxx_chip *chip, u16 writeop,
				  u16 data)
{ … }

static int mv88e6352_g2_avb_port_ptp_read(struct mv88e6xxx_chip *chip,
					  int port, int addr, u16 *data,
					  int len)
{ … }

static int mv88e6352_g2_avb_port_ptp_write(struct mv88e6xxx_chip *chip,
					   int port, int addr, u16 data)
{ … }

static int mv88e6352_g2_avb_ptp_read(struct mv88e6xxx_chip *chip, int addr,
				     u16 *data, int len)
{ … }

static int mv88e6352_g2_avb_ptp_write(struct mv88e6xxx_chip *chip, int addr,
				      u16 data)
{ … }

static int mv88e6352_g2_avb_tai_read(struct mv88e6xxx_chip *chip, int addr,
				     u16 *data, int len)
{ … }

static int mv88e6352_g2_avb_tai_write(struct mv88e6xxx_chip *chip, int addr,
				      u16 data)
{ … }

const struct mv88e6xxx_avb_ops mv88e6352_avb_ops = …;

static int mv88e6165_g2_avb_tai_read(struct mv88e6xxx_chip *chip, int addr,
				     u16 *data, int len)
{ … }

static int mv88e6165_g2_avb_tai_write(struct mv88e6xxx_chip *chip, int addr,
				      u16 data)
{ … }

const struct mv88e6xxx_avb_ops mv88e6165_avb_ops = …;

static int mv88e6390_g2_avb_port_ptp_read(struct mv88e6xxx_chip *chip,
					  int port, int addr, u16 *data,
					  int len)
{ … }

static int mv88e6390_g2_avb_port_ptp_write(struct mv88e6xxx_chip *chip,
					   int port, int addr, u16 data)
{ … }

static int mv88e6390_g2_avb_ptp_read(struct mv88e6xxx_chip *chip, int addr,
				     u16 *data, int len)
{ … }

static int mv88e6390_g2_avb_ptp_write(struct mv88e6xxx_chip *chip, int addr,
				      u16 data)
{ … }

static int mv88e6390_g2_avb_tai_read(struct mv88e6xxx_chip *chip, int addr,
				     u16 *data, int len)
{ … }

static int mv88e6390_g2_avb_tai_write(struct mv88e6xxx_chip *chip, int addr,
				      u16 data)
{ … }

const struct mv88e6xxx_avb_ops mv88e6390_avb_ops = …;