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

/*
 * Microchip switch driver main logic
 *
 * Copyright (C) 2017
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/delay.h>
#include <linux/export.h>
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_data/microchip-ksz.h>
#include <linux/phy.h>
#include <linux/etherdevice.h>
#include <linux/if_bridge.h>
#include <net/dsa.h>
#include <net/switchdev.h>

#include "ksz_priv.h"

static const struct {
	int index;
	char string[ETH_GSTRING_LEN];
} mib_names[TOTAL_SWITCH_COUNTER_NUM] = {
	{ 0x00, "rx_hi" },
	{ 0x01, "rx_undersize" },
	{ 0x02, "rx_fragments" },
	{ 0x03, "rx_oversize" },
	{ 0x04, "rx_jabbers" },
	{ 0x05, "rx_symbol_err" },
	{ 0x06, "rx_crc_err" },
	{ 0x07, "rx_align_err" },
	{ 0x08, "rx_mac_ctrl" },
	{ 0x09, "rx_pause" },
	{ 0x0A, "rx_bcast" },
	{ 0x0B, "rx_mcast" },
	{ 0x0C, "rx_ucast" },
	{ 0x0D, "rx_64_or_less" },
	{ 0x0E, "rx_65_127" },
	{ 0x0F, "rx_128_255" },
	{ 0x10, "rx_256_511" },
	{ 0x11, "rx_512_1023" },
	{ 0x12, "rx_1024_1522" },
	{ 0x13, "rx_1523_2000" },
	{ 0x14, "rx_2001" },
	{ 0x15, "tx_hi" },
	{ 0x16, "tx_late_col" },
	{ 0x17, "tx_pause" },
	{ 0x18, "tx_bcast" },
	{ 0x19, "tx_mcast" },
	{ 0x1A, "tx_ucast" },
	{ 0x1B, "tx_deferred" },
	{ 0x1C, "tx_total_col" },
	{ 0x1D, "tx_exc_col" },
	{ 0x1E, "tx_single_col" },
	{ 0x1F, "tx_mult_col" },
	{ 0x80, "rx_total" },
	{ 0x81, "tx_total" },
	{ 0x82, "rx_discards" },
	{ 0x83, "tx_discards" },
};

static void ksz_cfg(struct ksz_device *dev, u32 addr, u8 bits, bool set)
{
	u8 data;

	ksz_read8(dev, addr, &data);
	if (set)
		data |= bits;
	else
		data &= ~bits;
	ksz_write8(dev, addr, data);
}

static void ksz_cfg32(struct ksz_device *dev, u32 addr, u32 bits, bool set)
{
	u32 data;

	ksz_read32(dev, addr, &data);
	if (set)
		data |= bits;
	else
		data &= ~bits;
	ksz_write32(dev, addr, data);
}

static void ksz_port_cfg(struct ksz_device *dev, int port, int offset, u8 bits,
			 bool set)
{
	u32 addr;
	u8 data;

	addr = PORT_CTRL_ADDR(port, offset);
	ksz_read8(dev, addr, &data);

	if (set)
		data |= bits;
	else
		data &= ~bits;

	ksz_write8(dev, addr, data);
}

static void ksz_port_cfg32(struct ksz_device *dev, int port,