alistair23-linux/drivers/net/dsa/mv88e6xxx/global1_vtu.c

/*
 * Marvell 88E6xxx VLAN [Spanning Tree] Translation Unit (VTU [STU]) support
 *
 * Copyright (c) 2008 Marvell Semiconductor
 * Copyright (c) 2015 CMC Electronics, Inc.
 * Copyright (c) 2017 Savoir-faire Linux, Inc.
 *
 * 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.
 */

#include "mv88e6xxx.h"
#include "global1.h"

/* Offset 0x05: VTU Operation Register */

int mv88e6xxx_g1_vtu_op_wait(struct mv88e6xxx_chip *chip)
{
	return mv88e6xxx_g1_wait(chip, GLOBAL_VTU_OP, GLOBAL_VTU_OP_BUSY);
}

int mv88e6xxx_g1_vtu_op(struct mv88e6xxx_chip *chip, u16 op)
{
	int err;

	err = mv88e6xxx_g1_write(chip, GLOBAL_VTU_OP, op);
	if (err)
		return err;

	return mv88e6xxx_g1_vtu_op_wait(chip);
}

/* VLAN Translation Unit Operations */

int mv88e6xxx_g1_vtu_flush(struct mv88e6xxx_chip *chip)
{
	int err;

	err = mv88e6xxx_g1_vtu_op_wait(chip);
	if (err)
		return err;

	return mv88e6xxx_g1_vtu_op(chip, GLOBAL_VTU_OP_FLUSH_ALL);
}