kernel / drivers / net / dsa / yt921x.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (c) 2025 David Yang
 */

#ifndef __YT921X_H
#define __YT921X_H

#include <net/dsa.h>

#define YT921X_SMI_SWITCHID_M		GENMASK(3, 2)
#define  YT921X_SMI_SWITCHID(x)			FIELD_PREP(YT921X_SMI_SWITCHID_M, (x))
#define YT921X_SMI_AD			BIT(1)
#define  YT921X_SMI_ADDR			0
#define  YT921X_SMI_DATA			YT921X_SMI_AD
#define YT921X_SMI_RW			BIT(0)
#define  YT921X_SMI_WRITE			0
#define  YT921X_SMI_READ			YT921X_SMI_RW

#define YT921X_SWITCHID_NUM		4

#define YT921X_RST			0x80000
#define  YT921X_RST_HW				BIT(31)
#define  YT921X_RST_SW				BIT(1)
#define YT921X_FUNC			0x80004
#define  YT921X_FUNC_MIB			BIT(1)
#define YT921X_CHIP_ID			0x80008
#define  YT921X_CHIP_ID_MAJOR			GENMASK(31, 16)
#define YT921X_EXT_CPU_PORT		0x8000c
#define  YT921X_EXT_CPU_PORT_TAG_EN		BIT(15)
#define  YT921X_EXT_CPU_PORT_PORT_EN		BIT(14)
#define  YT921X_EXT_CPU_PORT_PORT_M		GENMASK(3, 0)
#define   YT921X_EXT_CPU_PORT_PORT(x)			FIELD_PREP(YT921X_EXT_CPU_PORT_PORT_M, (x))
#define YT921X_CPU_TAG_TPID		0x80010
#define  YT921X_CPU_TAG_TPID_TPID_M		GENMASK(15, 0)
/* Same as ETH_P_YT921X, but this represents the true HW default, while the
 * former is a local convention chosen by us.
 */
#define   YT921X_CPU_TAG_TPID_TPID_DEFAULT		0x9988
#define YT921X_PVID_SEL			0x80014
#define  YT921X_PVID_SEL_SVID_PORTn(port)	BIT(port)
#define YT921X_SERDES_CTRL		0x80028
#define  YT921X_SERDES_CTRL_PORTn_TEST(port)	BIT((port) - 3)
#define  YT921X_SERDES_CTRL_PORTn(port)		BIT((port) - 8)
#define YT921X_IO_LEVEL			0x80030
#define  YT9215_IO_LEVEL_NORMAL_M		GENMASK(5, 4)
#define   YT9215_IO_LEVEL_NORMAL(x)			FIELD_PREP(YT9215_IO_LEVEL_NORMAL_M, (x))
#define   YT9215_IO_LEVEL_NORMAL_3V3			YT9215_IO_LEVEL_NORMAL(0)
#define   YT9215_IO_LEVEL_NORMAL_1V8			YT9215_IO_LEVEL_NORMAL(3)
#define  YT9215_IO_LEVEL_RGMII1_M		GENMASK(3, 2)
#define   YT9215_IO_LEVEL_RGMII1(x)			FIELD_PREP(YT9215_IO_LEVEL_RGMII1_M, (x))
#define   YT9215_IO_LEVEL_RGMII1_3V3			YT9215_IO_LEVEL_RGMII1(0)
#define   YT9215_IO_LEVEL_RGMII1_2V5			YT9215_IO_LEVEL_RGMII1(1)
#define   YT9215_IO_LEVEL_RGMII1_1V8			YT9215_IO_LEVEL_RGMII1(2)
#define  YT9215_IO_LEVEL_RGMII0_M		GENMASK(1, 0)
#define   YT9215_IO_LEVEL_RGMII0(x)			FIELD_PREP(YT9215_IO_LEVEL_RGMII0_M, (x))
#define   YT9215_IO_LEVEL_RGMII0_3V3			YT9215_IO_LEVEL_RGMII0(0)
#define   YT9215_IO_LEVEL_RGMII0_2V5			YT9215_IO_LEVEL_RGMII0(1)
#define   YT9215_IO_LEVEL_RGMII0_1V8			YT9215_IO_LEVEL_RGMII0(2)
#define  YT9218_IO_LEVEL_RGMII1_M		GENMASK(5, 4)
#define   YT9218_IO_LEVEL_RGMII1(x)			FIELD_PREP(YT9218_IO_LEVEL_RGMII1_M, (x))
#define   YT9218_IO_LEVEL_RGMII1_3V3			YT9218_IO_LEVEL_RGMII1(0)
#define   YT9218_IO_LEVEL_RGMII1_2V5			YT9218_IO_LEVEL_RGMII1(1)
#define   YT9218_IO_LEVEL_RGMII1_1V8			YT9218_IO_LEVEL_RGMII1(2)
#define  YT9218_IO_LEVEL_RGMII0_M		GENMASK(3, 2)
#define   YT9218_IO_LEVEL_RGMII0(x)			FIELD_PREP(YT9218_IO_LEVEL_RGMII0_M, (x))
#define   YT9218_IO_LEVEL_RGMII0_3V3			YT9218_IO_LEVEL_RGMII0(0)
#define   YT9218_IO_LEVEL_RGMII0_2V5			YT9218_IO_LEVEL_RGMII0(1)
#define   YT9218_IO_LEVEL_RGMII0_1V8			YT9218_IO_LEVEL_RGMII0(2)
#define  YT9218_IO_LEVEL_NORMAL_M		GENMASK(1, 0)
#define   YT9218_IO_LEVEL_NORMAL(x)			FIELD_PREP(YT9218_IO_LEVEL_NORMAL_M, (x))
#define   YT9218_IO_LEVEL_NORMAL_3V3			YT9218_IO_LEVEL_NORMAL(0)
#define   YT9218_IO_LEVEL_NORMAL_1V8			YT9218_IO_LEVEL_NORMAL(3)
#define YT921X_MAC_ADDR_HI2		0x80080
#define YT921X_MAC_ADDR_LO4		0x80084
#define YT921X_SERDESn(port)		(0x8008c + 4 * ((port) - 8))
#define  YT921X_SERDES_MODE_M			GENMASK(9, 7)
#define   YT921X_SERDES_MODE(x)				FIELD_PREP(YT921X_SERDES_MODE_M, (x))
#define   YT921X_SERDES_MODE_SGMII			YT921X_SERDES_MODE(0)
#define   YT921X_SERDES_MODE_REVSGMII			YT921X_SERDES_MODE(1)
#define   YT921X_SERDES_MODE_1000BASEX			YT921X_SERDES_MODE(2)
#define   YT921X_SERDES_MODE_100BASEX			YT921X_SERDES_MODE(3)
#define   YT921X_SERDES_MODE_2500BASEX			YT921X_SERDES_MODE(4)
#define  YT921X_SERDES_RX_PAUSE			BIT(6)
#define  YT921X_SERDES_TX_PAUSE			BIT(5)
#define  YT921X_SERDES_LINK			BIT(4)  /* force link */
#define  YT921X_SERDES_DUPLEX_FULL		BIT(3)
#define  YT921X_SERDES_SPEED_M			GENMASK(2, 0)
#define   YT921X_SERDES_SPEED(x)			FIELD_PREP(YT921X_SERDES_SPEED_M, (x))
#define   YT921X_SERDES_SPEED_10			YT921X_SERDES_SPEED(0)
#define   YT921X_SERDES_SPEED_100			YT921X_SERDES_SPEED(1)
#define   YT921X_SERDES_SPEED_1000			YT921X_SERDES_SPEED(2)
#define   YT921X_SERDES_SPEED_10000			YT921X_SERDES_SPEED(3)
#define   YT921X_SERDES_SPEED_2500			YT921X_SERDES_SPEED(4)
#define YT921X_PORTn_CTRL(port)		(0x80100 + 4 * (port))
#define  YT921X_PORT_CTRL_PAUSE_AN		BIT(10)
#define YT921X_PORTn_STATUS(port)	(0x80200 + 4 * (port))
#define  YT921X_PORT_LINK			BIT(9)  /* CTRL: auto negotiation */
#define  YT921X_PORT_HALF_PAUSE			BIT(8)  /* Half-duplex back pressure mode */
#define  YT921X_PORT_DUPLEX_FULL		BIT(7)
#define  YT921X_PORT_RX_PAUSE			BIT(6)
#define  YT921X_PORT_TX_PAUSE			BIT(5)
#define  YT921X_PORT_RX_MAC_EN			BIT(4)
#define  YT921X_PORT_TX_MAC_EN			BIT(3)
#define  YT921X_PORT_SPEED_M			GENMASK(2, 0)
#define   YT921X_PORT_SPEED(x)				FIELD_PREP(YT921X_PORT_SPEED_M, (x))
#define   YT921X_PORT_SPEED_10				YT921X_PORT_SPEED(0)
#define   YT921X_PORT_SPEED_100				YT921X_PORT_SPEED(1)
#define   YT921X_PORT_SPEED_1000			YT921X_PORT_SPEED(2)
#define   YT921X_PORT_SPEED_10000			YT921X_PORT_SPEED(3)
#define   YT921X_PORT_SPEED_2500			YT921X_PORT_SPEED(4)
#define YT921X_PON_STRAP_FUNC		0x80320
#define YT921X_PON_STRAP_VAL		0x80324
#define YT921X_PON_STRAP_CAP		0x80328
#define  YT921X_PON_STRAP_EEE			BIT(16)
#define  YT921X_PON_STRAP_LOOP_DETECT		BIT(7)
#define YT921X_MDIO_POLLINGn(port)	(0x80364 + 4 * ((port) - 8))
#define  YT921X_MDIO_POLLING_DUPLEX_FULL	BIT(4)
#define  YT921X_MDIO_POLLING_LINK		BIT(3)
#define  YT921X_MDIO_POLLING_SPEED_M		GENMASK(2, 0)
#define   YT921X_MDIO_POLLING_SPEED(x)			FIELD_PREP(YT921X_MDIO_POLLING_SPEED_M, (x))
#define   YT921X_MDIO_POLLING_SPEED_10			YT921X_MDIO_POLLING_SPEED(0)
#define   YT921X_MDIO_POLLING_SPEED_100			YT921X_MDIO_POLLING_SPEED(1)
#define   YT921X_MDIO_POLLING_SPEED_1000		YT921X_MDIO_POLLING_SPEED(2)
#define   YT921X_MDIO_POLLING_SPEED_10000		YT921X_MDIO_POLLING_SPEED(3)
#define   YT921X_MDIO_POLLING_SPEED_2500		YT921X_MDIO_POLLING_SPEED(4)
#define YT921X_SENSOR			0x8036c
#define  YT921X_SENSOR_TEMP			BIT(18)
#define YT921X_TEMP			0x80374
#define YT921X_CHIP_MODE		0x80388
#define  YT921X_CHIP_MODE_MODE			GENMASK(1, 0)
#define YT921X_XMII_CTRL		0x80394
#define  YT921X_XMII_CTRL_PORTn(port)		BIT(9 - (port))  /* Yes, it's reversed */
#define YT921X_XMIIn(port)		(0x80400 + 8 * ((port) - 8))
#define  YT921X_XMII_MODE_M			GENMASK(31, 29)
#define   YT921X_XMII_MODE(x)				FIELD_PREP(YT921X_XMII_MODE_M, (x))
#define   YT921X_XMII_MODE_MII				YT921X_XMII_MODE(0)
#define   YT921X_XMII_MODE_REVMII			YT921X_XMII_MODE(1)
#define   YT921X_XMII_MODE_RMII				YT921X_XMII_MODE(2)
#define   YT921X_XMII_MODE_REVRMII			YT921X_XMII_MODE(3)
#define   YT921X_XMII_MODE_RGMII			YT921X_XMII_MODE(4)
#define   YT921X_XMII_MODE_DISABLE			YT921X_XMII_MODE(5)
#define  YT921X_XMII_LINK			BIT(19)  /* force link */
#define  YT921X_XMII_EN				BIT(18)
#define  YT921X_XMII_SOFT_RST			BIT(17)
#define  YT921X_XMII_RGMII_TX_DELAY_150PS_M	GENMASK(16, 13)
#define   YT921X_XMII_RGMII_TX_DELAY_150PS(x)		FIELD_PREP(YT921X_XMII_RGMII_TX_DELAY_150PS_M, (x))
#define  YT921X_XMII_TX_CLK_IN			BIT(11)
#define  YT921X_XMII_RX_CLK_IN			BIT(10)
#define  YT921X_XMII_RGMII_TX_DELAY_2NS		BIT(8)
#define  YT921X_XMII_RGMII_TX_CLK_OUT		BIT(7)
#define  YT921X_XMII_RGMII_RX_DELAY_150PS_M	GENMASK(6, 3)
#define   YT921X_XMII_RGMII_RX_DELAY_150PS(x)		FIELD_PREP(YT921X_XMII_RGMII_RX_DELAY_150PS_M, (x))
#define  YT921X_XMII_RMII_PHY_TX_CLK_OUT	BIT(2)
#define  YT921X_XMII_REVMII_TX_CLK_OUT		BIT(1)
#define  YT921X_XMII_REVMII_RX_CLK_OUT		BIT(0)

#define YT921X_MACn_FRAME(port)		(0x81008 + 0x1000 * (port))
#define  YT921X_MAC_FRAME_SIZE_M		GENMASK(21, 8)
#define   YT921X_MAC_FRAME_SIZE(x)			FIELD_PREP(YT921X_MAC_FRAME_SIZE_M, (x))

#define YT921X_EEEn_VAL(port)		(0xa0000 + 0x40 * (port))
#define  YT921X_EEE_VAL_DATA			BIT(1)

#define YT921X_EEE_CTRL			0xb0000
#define  YT921X_EEE_CTRL_ENn(port)		BIT(port)

#define YT921X_MIB_CTRL			0xc0004
#define  YT921X_MIB_CTRL_CLEAN			BIT(30)
#define  YT921X_MIB_CTRL_PORT_M			GENMASK(6, 3)
#define   YT921X_MIB_CTRL_PORT(x)			FIELD_PREP(YT921X_MIB_CTRL_PORT_M, (x))
#define  YT921X_MIB_CTRL_ONE_PORT		BIT(1)
#define  YT921X_MIB_CTRL_ALL_PORT		BIT(0)
#define YT921X_MIBn_DATA0(port)		(0xc0100 + 0x100 * (port))
#define YT921X_MIBn_DATAm(port, x)	(YT921X_MIBn_DATA0(port) + 4 * (x))
#define  YT921X_MIB_DATA_RX_BROADCAST		0x00
#define  YT921X_MIB_DATA_RX_PAUSE		0x04
#define  YT921X_MIB_DATA_RX_MULTICAST		0x08
#define  YT921X_MIB_DATA_RX_CRC_ERR		0x0c

#define  YT921X_MIB_DATA_RX_ALIGN_ERR		0x10
#define  YT921X_MIB_DATA_RX_UNDERSIZE_ERR	0x14
#define  YT921X_MIB_DATA_RX_FRAG_ERR		0x18
#define  YT921X_MIB_DATA_RX_PKT_SZ_64		0x1c

#define  YT921X_MIB_DATA_RX_PKT_SZ_65_TO_127	0x20
#define  YT921X_MIB_DATA_RX_PKT_SZ_128_TO_255	0x24
#define  YT921X_MIB_DATA_RX_PKT_SZ_256_TO_511	0x28
#define  YT921X_MIB_DATA_RX_PKT_SZ_512_TO_1023	0x2c

#define  YT921X_MIB_DATA_RX_PKT_SZ_1024_TO_1518	0x30
#define  YT921X_MIB_DATA_RX_PKT_SZ_1519_TO_MAX	0x34
/* 0x38: unused */
#define  YT921X_MIB_DATA_RX_GOOD_BYTES		0x3c

/* 0x40: 64 bytes */
#define  YT921X_MIB_DATA_RX_BAD_BYTES		0x44
/* 0x48: 64 bytes */
#define  YT921X_MIB_DATA_RX_OVERSIZE_ERR	0x4c

#define  YT921X_MIB_DATA_RX_DROPPED		0x50
#define  YT921X_MIB_DATA_TX_BROADCAST		0x54
#define  YT921X_MIB_DATA_TX_PAUSE		0x58
#define  YT921X_MIB_DATA_TX_MULTICAST		0x5c

#define  YT921X_MIB_DATA_TX_UNDERSIZE_ERR	0x60
#define  YT921X_MIB_DATA_TX_PKT_SZ_64		0x64
#define  YT921X_MIB_DATA_TX_PKT_SZ_65_TO_127	0x68
#define  YT921X_MIB_DATA_TX_PKT_SZ_128_TO_255	0x6c

#define  YT921X_MIB_DATA_TX_PKT_SZ_256_TO_511	0x70
#define  YT921X_MIB_DATA_TX_PKT_SZ_512_TO_1023	0x74
#define  YT921X_MIB_DATA_TX_PKT_SZ_1024_TO_1518	0x78
#define  YT921X_MIB_DATA_TX_PKT_SZ_1519_TO_MAX	0x7c

/* 0x80: unused */
#define  YT921X_MIB_DATA_TX_GOOD_BYTES		0x84
/* 0x88: 64 bytes */
#define  YT921X_MIB_DATA_TX_COLLISION		0x8c

#define  YT921X_MIB_DATA_TX_EXCESSIVE_COLLISION	0x90
#define  YT921X_MIB_DATA_TX_MULTIPLE_COLLISION	0x94
#define  YT921X_MIB_DATA_TX_SINGLE_COLLISION	0x98
#define  YT921X_MIB_DATA_TX_PKT			0x9c

#define  YT921X_MIB_DATA_TX_DEFERRED		0xa0
#define  YT921X_MIB_DATA_TX_LATE_COLLISION	0xa4
#define  YT921X_MIB_DATA_RX_OAM			0xa8
#define  YT921X_MIB_DATA_TX_OAM			0xac

#define YT921X_EDATA_CTRL		0xe0000
#define  YT921X_EDATA_CTRL_ADDR_M		GENMASK(15, 8)
#define   YT921X_EDATA_CTRL_ADDR(x)			FIELD_PREP(YT921X_EDATA_CTRL_ADDR_M, (x))
#define  YT921X_EDATA_CTRL_OP_M			GENMASK(3, 0)
#define   YT921X_EDATA_CTRL_OP(x)			FIELD_PREP(YT921X_EDATA_CTRL_OP_M, (x))
#define   YT921X_EDATA_CTRL_READ			YT921X_EDATA_CTRL_OP(5)
#define YT921X_EDATA_DATA		0xe0004
#define  YT921X_EDATA_DATA_DATA_M			GENMASK(31, 24)
#define  YT921X_EDATA_DATA_STATUS_M		GENMASK(3, 0)
#define   YT921X_EDATA_DATA_STATUS(x)			FIELD_PREP(YT921X_EDATA_DATA_STATUS_M, (x))
#define   YT921X_EDATA_DATA_IDLE			YT921X_EDATA_DATA_STATUS(3)

#define YT921X_EXT_MBUS_OP		0x6a000
#define YT921X_INT_MBUS_OP		0xf0000
#define  YT921X_MBUS_OP_START			BIT(0)
#define YT921X_EXT_MBUS_CTRL		0x6a004
#define YT921X_INT_MBUS_CTRL		0xf0004
#define  YT921X_MBUS_CTRL_PORT_M		GENMASK(25, 21)
#define   YT921X_MBUS_CTRL_PORT(x)			FIELD_PREP(YT921X_MBUS_CTRL_PORT_M, (x))
#define  YT921X_MBUS_CTRL_REG_M			GENMASK(20, 16)
#define   YT921X_MBUS_CTRL_REG(x)			FIELD_PREP(YT921X_MBUS_CTRL_REG_M, (x))
#define  YT921X_MBUS_CTRL_TYPE_M		GENMASK(11, 8)  /* wild guess */
#define   YT921X_MBUS_CTRL_TYPE(x)			FIELD_PREP(YT921X_MBUS_CTRL_TYPE_M, (x))
#define   YT921X_MBUS_CTRL_TYPE_C22			YT921X_MBUS_CTRL_TYPE(4)
#define  YT921X_MBUS_CTRL_OP_M			GENMASK(3, 2)  /* wild guess */
#define   YT921X_MBUS_CTRL_OP(x)			FIELD_PREP(YT921X_MBUS_CTRL_OP_M, (x))
#define   YT921X_MBUS_CTRL_WRITE			YT921X_MBUS_CTRL_OP(1)
#define   YT921X_MBUS_CTRL_READ				YT921X_MBUS_CTRL_OP(2)
#define YT921X_EXT_MBUS_DOUT		0x6a008
#define YT921X_INT_MBUS_DOUT		0xf0008
#define YT921X_EXT_MBUS_DIN		0x6a00c
#define YT921X_INT_MBUS_DIN		0xf000c

#define YT921X_PORTn_EGR(port)		(0x100000 + 4 * (port))
#define  YT921X_PORT_EGR_TPID_CTAG_M		GENMASK(5, 4)
#define   YT921X_PORT_EGR_TPID_CTAG(x)			FIELD_PREP(YT921X_PORT_EGR_TPID_CTAG_M, (x))
#define  YT921X_PORT_EGR_TPID_STAG_M		GENMASK(3, 2)
#define   YT921X_PORT_EGR_TPID_STAG(x)			FIELD_PREP(YT921X_PORT_EGR_TPID_STAG_M, (x))
#define YT921X_TPID_EGRn(x)		(0x100300 + 4 * (x))	/* [0, 3] */
#define  YT921X_TPID_EGR_TPID_M			GENMASK(15, 0)

#define YT921X_VLAN_IGR_FILTER		0x180280
#define  YT921X_VLAN_IGR_FILTER_PORTn_BYPASS_IGMP(port)	BIT((port) + 11)
#define  YT921X_VLAN_IGR_FILTER_PORTn(port)	BIT(port)
#define YT921X_PORTn_ISOLATION(port)	(0x180294 + 4 * (port))
#define  YT921X_PORT_ISOLATION_BLOCKn(port)	BIT(port)
#define YT921X_STPn(n)			(0x18038c + 4 * (n))
#define  YT921X_STP_PORTn_M(port)		GENMASK(2 * (port) + 1, 2 * (port))
#define   YT921X_STP_PORTn(port, x)			((x) << (2 * (port)))
#define   YT921X_STP_PORTn_DISABLED(port)		YT921X_STP_PORTn(port, 0)
#define   YT921X_STP_PORTn_LEARNING(port)		YT921X_STP_PORTn(port, 1)
#define   YT921X_STP_PORTn_BLOCKING(port)		YT921X_STP_PORTn(port, 2)
#define   YT921X_STP_PORTn_FORWARD(port)		YT921X_STP_PORTn(port, 3)
#define YT921X_PORTn_LEARN(port)	(0x1803d0 + 4 * (port))
#define  YT921X_PORT_LEARN_VID_LEARN_MULTI_EN	BIT(22)
#define  YT921X_PORT_LEARN_VID_LEARN_MODE	BIT(21)
#define  YT921X_PORT_LEARN_VID_LEARN_EN		BIT(20)
#define  YT921X_PORT_LEARN_SUSPEND_COPY_EN	BIT(19)
#define  YT921X_PORT_LEARN_SUSPEND_DROP_EN	BIT(18)
#define  YT921X_PORT_LEARN_DIS			BIT(17)
#define  YT921X_PORT_LEARN_LIMIT_EN		BIT(16)
#define  YT921X_PORT_LEARN_LIMIT_M		GENMASK(15, 8)
#define   YT921X_PORT_LEARN_LIMIT(x)			FIELD_PREP(YT921X_PORT_LEARN_LIMIT_M, (x))
#define  YT921X_PORT_LEARN_DROP_ON_EXCEEDED	BIT(2)
#define  YT921X_PORT_LEARN_MODE_M		GENMASK(1, 0)
#define   YT921X_PORT_LEARN_MODE(x)			FIELD_PREP(YT921X_PORT_LEARN_MODE_M, (x))
#define   YT921X_PORT_LEARN_MODE_AUTO			YT921X_PORT_LEARN_MODE(0)
#define   YT921X_PORT_LEARN_MODE_AUTO_AND_COPY		YT921X_PORT_LEARN_MODE(1)
#define   YT921X_PORT_LEARN_MODE_CPU_CONTROL		YT921X_PORT_LEARN_MODE(2)
#define YT921X_AGEING			0x180440
#define  YT921X_AGEING_INTERVAL_M		GENMASK(15, 0)
#define YT921X_FDB_IN0			0x180454
#define YT921X_FDB_IN1			0x180458
#define YT921X_FDB_IN2			0x18045c
#define YT921X_FDB_OP			0x180460
#define  YT921X_FDB_OP_INDEX_M			GENMASK(22, 11)
#define   YT921X_FDB_OP_INDEX(x)			FIELD_PREP(YT921X_FDB_OP_INDEX_M, (x))
#define  YT921X_FDB_OP_MODE_INDEX		BIT(10)  /* mac+fid / index */
#define  YT921X_FDB_OP_FLUSH_MCAST		BIT(9)  /* ucast / mcast */
#define  YT921X_FDB_OP_FLUSH_M			GENMASK(8, 7)
#define   YT921X_FDB_OP_FLUSH(x)			FIELD_PREP(YT921X_FDB_OP_FLUSH_M, (x))
#define   YT921X_FDB_OP_FLUSH_ALL			YT921X_FDB_OP_FLUSH(0)
#define   YT921X_FDB_OP_FLUSH_PORT			YT921X_FDB_OP_FLUSH(1)
#define   YT921X_FDB_OP_FLUSH_PORT_VID			YT921X_FDB_OP_FLUSH(2)
#define   YT921X_FDB_OP_FLUSH_VID			YT921X_FDB_OP_FLUSH(3)
#define  YT921X_FDB_OP_FLUSH_STATIC		BIT(6)
#define  YT921X_FDB_OP_NEXT_TYPE_M		GENMASK(5, 4)
#define   YT921X_FDB_OP_NEXT_TYPE(x)			FIELD_PREP(YT921X_FDB_OP_NEXT_TYPE_M, (x))
#define   YT921X_FDB_OP_NEXT_TYPE_UCAST_PORT		YT921X_FDB_OP_NEXT_TYPE(0)
#define   YT921X_FDB_OP_NEXT_TYPE_UCAST_VID		YT921X_FDB_OP_NEXT_TYPE(1)
#define   YT921X_FDB_OP_NEXT_TYPE_UCAST			YT921X_FDB_OP_NEXT_TYPE(2)
#define   YT921X_FDB_OP_NEXT_TYPE_MCAST			YT921X_FDB_OP_NEXT_TYPE(3)
#define  YT921X_FDB_OP_OP_M			GENMASK(3, 1)
#define   YT921X_FDB_OP_OP(x)				FIELD_PREP(YT921X_FDB_OP_OP_M, (x))
#define   YT921X_FDB_OP_OP_ADD				YT921X_FDB_OP_OP(0)
#define   YT921X_FDB_OP_OP_DEL				YT921X_FDB_OP_OP(1)
#define   YT921X_FDB_OP_OP_GET_ONE			YT921X_FDB_OP_OP(2)
#define   YT921X_FDB_OP_OP_GET_NEXT			YT921X_FDB_OP_OP(3)
#define   YT921X_FDB_OP_OP_FLUSH			YT921X_FDB_OP_OP(4)
#define  YT921X_FDB_OP_START			BIT(0)
#define YT921X_FDB_RESULT		0x180464
#define  YT921X_FDB_RESULT_DONE			BIT(15)
#define  YT921X_FDB_RESULT_NOTFOUND		BIT(14)
#define  YT921X_FDB_RESULT_OVERWRITED		BIT(13)
#define  YT921X_FDB_RESULT_INDEX_M		GENMASK(11, 0)
#define   YT921X_FDB_RESULT_INDEX(x)			FIELD_PREP(YT921X_FDB_RESULT_INDEX_M, (x))
#define YT921X_FDB_OUT0			0x1804b0
#define  YT921X_FDB_IO0_ADDR_HI4_M		GENMASK(31, 0)
#define YT921X_FDB_OUT1			0x1804b4
#define  YT921X_FDB_IO1_EGR_INT_PRI_EN		BIT(31)
#define  YT921X_FDB_IO1_STATUS_M		GENMASK(30, 28)
#define   YT921X_FDB_IO1_STATUS(x)			FIELD_PREP(YT921X_FDB_IO1_STATUS_M, (x))
#define   YT921X_FDB_IO1_STATUS_INVALID			YT921X_FDB_IO1_STATUS(0)
#define   YT921X_FDB_IO1_STATUS_MIN_TIME		YT921X_FDB_IO1_STATUS(1)
#define   YT921X_FDB_IO1_STATUS_MOVE_AGING_MAX_TIME	YT921X_FDB_IO1_STATUS(3)
#define   YT921X_FDB_IO1_STATUS_MAX_TIME		YT921X_FDB_IO1_STATUS(5)
#define   YT921X_FDB_IO1_STATUS_PENDING			YT921X_FDB_IO1_STATUS(6)
#define   YT921X_FDB_IO1_STATUS_STATIC			YT921X_FDB_IO1_STATUS(7)
#define  YT921X_FDB_IO1_FID_M			GENMASK(27, 16)  /* filtering ID (VID) */
#define   YT921X_FDB_IO1_FID(x)				FIELD_PREP(YT921X_FDB_IO1_FID_M, (x))
#define  YT921X_FDB_IO1_ADDR_LO2_M		GENMASK(15, 0)
#define YT921X_FDB_OUT2			0x1804b8
#define  YT921X_FDB_IO2_MOVE_AGING_STATUS_M	GENMASK(31, 30)
#define  YT921X_FDB_IO2_IGR_DROP		BIT(29)
#define  YT921X_FDB_IO2_EGR_PORTS_M		GENMASK(28, 18)
#define   YT921X_FDB_IO2_EGR_PORTS(x)			FIELD_PREP(YT921X_FDB_IO2_EGR_PORTS_M, (x))
#define  YT921X_FDB_IO2_EGR_DROP		BIT(17)
#define  YT921X_FDB_IO2_COPY_TO_CPU		BIT(16)
#define  YT921X_FDB_IO2_IGR_INT_PRI_EN		BIT(15)
#define  YT921X_FDB_IO2_INT_PRI_M		GENMASK(14, 12)
#define   YT921X_FDB_IO2_INT_PRI(x)			FIELD_PREP(YT921X_FDB_IO2_INT_PRI_M, (x))
#define  YT921X_FDB_IO2_NEW_VID_M		GENMASK(11, 0)
#define   YT921X_FDB_IO2_NEW_VID(x)			FIELD_PREP(YT921X_FDB_IO2_NEW_VID_M, (x))
#define YT921X_FILTER_UNK_UCAST		0x180508
#define YT921X_FILTER_UNK_MCAST		0x18050c
#define YT921X_FILTER_MCAST		0x180510
#define YT921X_FILTER_BCAST		0x180514
#define  YT921X_FILTER_PORTS_M			GENMASK(10, 0)
#define   YT921X_FILTER_PORTS(x)			FIELD_PREP(YT921X_FILTER_PORTS_M, (x))
#define  YT921X_FILTER_PORTn(port)		BIT(port)
#define YT921X_VLAN_EGR_FILTER		0x180598
#define  YT921X_VLAN_EGR_FILTER_PORTn(port)	BIT(port)
#define YT921X_CPU_COPY			0x180690
#define  YT921X_CPU_COPY_FORCE_INT_PORT		BIT(2)
#define  YT921X_CPU_COPY_TO_INT_CPU		BIT(1)
#define  YT921X_CPU_COPY_TO_EXT_CPU		BIT(0)
#define YT921X_ACT_UNK_UCAST		0x180734
#define YT921X_ACT_UNK_MCAST		0x180738
#define  YT921X_ACT_UNK_MCAST_BYPASS_DROP_RMA	BIT(23)
#define  YT921X_ACT_UNK_MCAST_BYPASS_DROP_IGMP	BIT(22)
#define  YT921X_ACT_UNK_ACTn_M(port)		GENMASK(2 * (port) + 1, 2 * (port))
#define   YT921X_ACT_UNK_ACTn(port, x)			((x) << (2 * (port)))
#define   YT921X_ACT_UNK_ACTn_FORWARD(port)		YT921X_ACT_UNK_ACTn(port, 0)  /* flood */
#define   YT921X_ACT_UNK_ACTn_TRAP(port)		YT921X_ACT_UNK_ACTn(port, 1)  /* steer to CPU */
#define   YT921X_ACT_UNK_ACTn_DROP(port)		YT921X_ACT_UNK_ACTn(port, 2)  /* discard */
/* NEVER use this action; see comments in the tag driver */
#define   YT921X_ACT_UNK_ACTn_COPY(port)		YT921X_ACT_UNK_ACTn(port, 3)  /* flood and copy */
#define YT921X_FDB_HW_FLUSH		0x180958
#define  YT921X_FDB_HW_FLUSH_ON_LINKDOWN	BIT(0)

#define YT921X_VLANn_CTRL(vlan)		(0x188000 + 8 * (vlan))
#define  YT921X_VLAN_CTRL_UNTAG_PORTS_M		GENMASK_ULL(50, 40)
#define   YT921X_VLAN_CTRL_UNTAG_PORTS(x)		FIELD_PREP(YT921X_VLAN_CTRL_UNTAG_PORTS_M, (x))
#define  YT921X_VLAN_CTRL_UNTAG_PORTn(port)	BIT_ULL((port) + 40)
#define  YT921X_VLAN_CTRL_STP_ID_M		GENMASK_ULL(39, 36)
#define   YT921X_VLAN_CTRL_STP_ID(x)			FIELD_PREP(YT921X_VLAN_CTRL_STP_ID_M, (x))
#define  YT921X_VLAN_CTRL_SVLAN_EN		BIT_ULL(35)
#define  YT921X_VLAN_CTRL_FID_M			GENMASK_ULL(34, 23)
#define   YT921X_VLAN_CTRL_FID(x)			FIELD_PREP(YT921X_VLAN_CTRL_FID_M, (x))
#define  YT921X_VLAN_CTRL_LEARN_DIS		BIT_ULL(22)
#define  YT921X_VLAN_CTRL_INT_PRI_EN		BIT_ULL(21)
#define  YT921X_VLAN_CTRL_INT_PRI_M		GENMASK_ULL(20, 18)
#define  YT921X_VLAN_CTRL_PORTS_M		GENMASK_ULL(17, 7)
#define   YT921X_VLAN_CTRL_PORTS(x)			FIELD_PREP(YT921X_VLAN_CTRL_PORTS_M, (x))
#define  YT921X_VLAN_CTRL_PORTn(port)		BIT_ULL((port) + 7)
#define  YT921X_VLAN_CTRL_BYPASS_1X_AC		BIT_ULL(6)
#define  YT921X_VLAN_CTRL_METER_EN		BIT_ULL(5)
#define  YT921X_VLAN_CTRL_METER_ID_M		GENMASK_ULL(4, 0)

#define YT921X_TPID_IGRn(x)		(0x210000 + 4 * (x))	/* [0, 3] */
#define  YT921X_TPID_IGR_TPID_M			GENMASK(15, 0)
#define YT921X_PORTn_IGR_TPID(port)	(0x210010 + 4 * (port))
#define  YT921X_PORT_IGR_TPIDn_STAG_M		GENMASK(7, 4)
#define  YT921X_PORT_IGR_TPIDn_STAG(x)		BIT((x) + 4)
#define  YT921X_PORT_IGR_TPIDn_CTAG_M		GENMASK(3, 0)
#define  YT921X_PORT_IGR_TPIDn_CTAG(x)		BIT(x)

#define YT921X_PORTn_VLAN_CTRL(port)	(0x230010 + 4 * (port))
#define  YT921X_PORT_VLAN_CTRL_SVLAN_PRI_EN	BIT(31)
#define  YT921X_PORT_VLAN_CTRL_CVLAN_PRI_EN	BIT(30)
#define  YT921X_PORT_VLAN_CTRL_SVID_M		GENMASK(29, 18)
#define   YT921X_PORT_VLAN_CTRL_SVID(x)			FIELD_PREP(YT921X_PORT_VLAN_CTRL_SVID_M, (x))
#define  YT921X_PORT_VLAN_CTRL_CVID_M		GENMASK(17, 6)
#define   YT921X_PORT_VLAN_CTRL_CVID(x)			FIELD_PREP(YT921X_PORT_VLAN_CTRL_CVID_M, (x))
#define  YT921X_PORT_VLAN_CTRL_SVLAN_PRI_M	GENMASK(5, 3)
#define  YT921X_PORT_VLAN_CTRL_CVLAN_PRI_M	GENMASK(2, 0)
#define YT921X_PORTn_VLAN_CTRL1(port)	(0x230080 + 4 * (port))
#define  YT921X_PORT_VLAN_CTRL1_VLAN_RANGE_EN	BIT(8)
#define  YT921X_PORT_VLAN_CTRL1_VLAN_RANGE_PROFILE_ID_M	GENMASK(7, 4)
#define  YT921X_PORT_VLAN_CTRL1_SVLAN_DROP_TAGGED	BIT(3)
#define  YT921X_PORT_VLAN_CTRL1_SVLAN_DROP_UNTAGGED	BIT(2)
#define  YT921X_PORT_VLAN_CTRL1_CVLAN_DROP_TAGGED	BIT(1)
#define  YT921X_PORT_VLAN_CTRL1_CVLAN_DROP_UNTAGGED	BIT(0)

#define YT921X_MIRROR			0x300300
#define  YT921X_MIRROR_IGR_PORTS_M		GENMASK(26, 16)
#define   YT921X_MIRROR_IGR_PORTS(x)			FIELD_PREP(YT921X_MIRROR_IGR_PORTS_M, (x))
#define  YT921X_MIRROR_IGR_PORTn(port)		BIT((port) + 16)
#define  YT921X_MIRROR_EGR_PORTS_M		GENMASK(14, 4)
#define   YT921X_MIRROR_EGR_PORTS(x)			FIELD_PREP(YT921X_MIRROR_EGR_PORTS_M, (x))
#define  YT921X_MIRROR_EGR_PORTn(port)		BIT((port) + 4)
#define  YT921X_MIRROR_PORT_M			GENMASK(3, 0)
#define   YT921X_MIRROR_PORT(x)				FIELD_PREP(YT921X_MIRROR_PORT_M, (x))

#define YT921X_EDATA_EXTMODE	0xfb
#define YT921X_EDATA_LEN	0x100

#define YT921X_FDB_NUM	4096

enum yt921x_fdb_entry_status {
	YT921X_FDB_ENTRY_STATUS_INVALID = 0,
	YT921X_FDB_ENTRY_STATUS_MIN_TIME = 1,
	YT921X_FDB_ENTRY_STATUS_MOVE_AGING_MAX_TIME = 3,
	YT921X_FDB_ENTRY_STATUS_MAX_TIME = 5,
	YT921X_FDB_ENTRY_STATUS_PENDING = 6,
	YT921X_FDB_ENTRY_STATUS_STATIC = 7,
};

#define YT921X_MSTI_NUM		16

#define YT9215_MAJOR	0x9002
#define YT9218_MAJOR	0x9001

/* required for a hard reset */
#define YT921X_RST_DELAY_US	10000

#define YT921X_FRAME_SIZE_MAX	0x2400  /* 9216 */

#define YT921X_TAG_LEN	8

/* 8 internal + 2 external + 1 mcu */
#define YT921X_PORT_NUM			11

#define yt921x_port_is_internal(port) ((port) < 8)
#define yt921x_port_is_external(port) (8 <= (port) && (port) < 9)

struct yt921x_mib {
	u64 rx_broadcast;
	u64 rx_pause;
	u64 rx_multicast;
	u64 rx_crc_errors;

	u64 rx_alignment_errors;
	u64 rx_undersize_errors;
	u64 rx_fragment_errors;
	u64 rx_64byte;

	u64 rx_65_127byte;
	u64 rx_128_255byte;
	u64 rx_256_511byte;
	u64 rx_512_1023byte;

	u64 rx_1024_1518byte;
	u64 rx_jumbo;
	u64 rx_good_bytes;

	u64 rx_bad_bytes;
	u64 rx_oversize_errors;

	u64 rx_dropped;
	u64 tx_broadcast;
	u64 tx_pause;
	u64 tx_multicast;

	u64 tx_undersize_errors;
	u64 tx_64byte;
	u64 tx_65_127byte;
	u64 tx_128_255byte;

	u64 tx_256_511byte;
	u64 tx_512_1023byte;
	u64 tx_1024_1518byte;
	u64 tx_jumbo;

	u64 tx_good_bytes;
	u64 tx_collisions;

	u64 tx_aborted_errors;
	u64 tx_multiple_collisions;
	u64 tx_single_collisions;
	u64 tx_good;

	u64 tx_deferred;
	u64 tx_late_collisions;
	u64 rx_oam;
	u64 tx_oam;
};

struct yt921x_port {
	unsigned char index;

	bool hairpin;
	bool isolated;

	struct delayed_work mib_read;
	struct yt921x_mib mib;
	u64 rx_frames;
	u64 tx_frames;
};

struct yt921x_reg_ops {
	int (*read)(void *context, u32 reg, u32 *valp);
	int (*write)(void *context, u32 reg, u32 val);
};

struct yt921x_priv {
	struct dsa_switch ds;

	const struct yt921x_info *info;
	/* cache of dsa_cpu_ports(ds) */
	u16 cpu_ports_mask;

	/* protect the access to the switch registers */
	struct mutex reg_lock;
	const struct yt921x_reg_ops *reg_ops;
	void *reg_ctx;

	/* mdio master bus */
	struct mii_bus *mbus_int;
	struct mii_bus *mbus_ext;

	struct yt921x_port ports[YT921X_PORT_NUM];

	u16 eee_ports_mask;
};

#endif