/* SPDX-License-Identifier: GPL-2.0-only */
/******************************************************************************
  PTP Header file

  Copyright (C) 2013  Vayavya Labs Pvt Ltd


  Author: Rayagond Kokatanur <rayagond@vayavyalabs.com>
******************************************************************************/

#ifndef	__STMMAC_PTP_H__
#define	__STMMAC_PTP_H__

#define PTP_XGMAC_OFFSET	0xd00
#define	PTP_GMAC4_OFFSET	0xb00
#define	PTP_GMAC3_X_OFFSET	0x700

/* IEEE 1588 PTP register offsets */
#define	PTP_TCR		0x00	/* Timestamp Control Reg */
#define	PTP_SSIR	0x04	/* Sub-Second Increment Reg */
#define	PTP_STSR	0x08	/* System Time – Seconds Regr */
#define	PTP_STNSR	0x0c	/* System Time – Nanoseconds Reg */
#define	PTP_STSUR	0x10	/* System Time – Seconds Update Reg */
#define	PTP_STNSUR	0x14	/* System Time – Nanoseconds Update Reg */
#define	PTP_TAR		0x18	/* Timestamp Addend Reg */

#define	PTP_STNSUR_ADDSUB_SHIFT	31
#define	PTP_DIGITAL_ROLLOVER_MODE	0x3B9ACA00	/* 10e9-1 ns */
#define	PTP_BINARY_ROLLOVER_MODE	0x80000000	/* ~0.466 ns */

/* PTP Timestamp control register defines */
#define	PTP_TCR_TSENA		BIT(0)	/* Timestamp Enable */
#define	PTP_TCR_TSCFUPDT	BIT(1)	/* Timestamp Fine/Coarse Update */
#define	PTP_TCR_TSINIT		BIT(2)	/* Timestamp Initialize */
#define	PTP_TCR_TSUPDT		BIT(3)	/* Timestamp Update */
#define	PTP_TCR_TSTRIG		BIT(4)	/* Timestamp Interrupt Trigger Enable */
#define	PTP_TCR_TSADDREG	BIT(5)	/* Addend Reg Update */
#define	PTP_TCR_TSENALL		BIT(8)	/* Enable Timestamp for All Frames */
#define	PTP_TCR_TSCTRLSSR	BIT(9)	/* Digital or Binary Rollover Control */
/* Enable PTP packet Processing for Version 2 Format */
#define	PTP_TCR_TSVER2ENA	BIT(10)
/* Enable Processing of PTP over Ethernet Frames */
#define	PTP_TCR_TSIPENA		BIT(11)
/* Enable Processing of PTP Frames Sent over IPv6-UDP */
#define	PTP_TCR_TSIPV6ENA	BIT(12)
/* Enable Processing of PTP Frames Sent over IPv4-UDP */
#define	PTP_TCR_TSIPV4ENA	BIT(13)
/* Enable Timestamp Snapshot for Event Messages */
#define	PTP_TCR_TSEVNTENA	BIT(14)
/* Enable Snapshot for Messages Relevant to Master */
#define	PTP_TCR_TSMSTRENA	BIT(15)
/* Select PTP packets for Taking Snapshots
 * On gmac4 specifically:
 * Enable SYNC, Pdelay_Req, Pdelay_Resp when TSEVNTENA is enabled.
 * or
 * Enable  SYNC, Follow_Up, Delay_Req, Delay_Resp, Pdelay_Req, Pdelay_Resp,
 * Pdelay_Resp_Follow_Up if TSEVNTENA is disabled
 */
#define	PTP_TCR_SNAPTYPSEL_1	BIT(16)
/* Enable MAC address for PTP Frame Filtering */
#define	PTP_TCR_TSENMACADDR	BIT(18)

/* SSIR defines */
#define	PTP_SSIR_SSINC_MASK		0xff
#define	GMAC4_PTP_SSIR_SSINC_SHIFT	16

#endif	/* __STMMAC_PTP_H__ */