drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /******************************************************************************
   3   PTP Header file
   4
   5   Copyright (C) 2013  Vayavya Labs Pvt Ltd
   6
   7
   8   Author: Rayagond Kokatanur <rayagond@vayavyalabs.com>
   9 ******************************************************************************/
  10
  11 #ifndef __STMMAC_PTP_H__
  12 #define __STMMAC_PTP_H__
  13
  14 #define PTP_XGMAC_OFFSET        0xd00
  15 #define PTP_GMAC4_OFFSET        0xb00
  16 #define PTP_GMAC3_X_OFFSET      0x700
  17
  18 /* IEEE 1588 PTP register offsets */
  19 #define PTP_TCR         0x00    /* Timestamp Control Reg */
  20 #define PTP_SSIR        0x04    /* Sub-Second Increment Reg */
  21 #define PTP_STSR        0x08    /* System Time – Seconds Regr */
  22 #define PTP_STNSR       0x0c    /* System Time – Nanoseconds Reg */
  23 #define PTP_STSUR       0x10    /* System Time – Seconds Update Reg */
  24 #define PTP_STNSUR      0x14    /* System Time – Nanoseconds Update Reg */
  25 #define PTP_TAR         0x18    /* Timestamp Addend Reg */
  26
  27 #define PTP_STNSUR_ADDSUB_SHIFT 31
  28 #define PTP_DIGITAL_ROLLOVER_MODE       0x3B9ACA00      /* 10e9-1 ns */
  29 #define PTP_BINARY_ROLLOVER_MODE        0x80000000      /* ~0.466 ns */
  30
  31 /* PTP Timestamp control register defines */
  32 #define PTP_TCR_TSENA           BIT(0)  /* Timestamp Enable */
  33 #define PTP_TCR_TSCFUPDT        BIT(1)  /* Timestamp Fine/Coarse Update */
  34 #define PTP_TCR_TSINIT          BIT(2)  /* Timestamp Initialize */
  35 #define PTP_TCR_TSUPDT          BIT(3)  /* Timestamp Update */
  36 #define PTP_TCR_TSTRIG          BIT(4)  /* Timestamp Interrupt Trigger Enable */
  37 #define PTP_TCR_TSADDREG        BIT(5)  /* Addend Reg Update */
  38 #define PTP_TCR_TSENALL         BIT(8)  /* Enable Timestamp for All Frames */
  39 #define PTP_TCR_TSCTRLSSR       BIT(9)  /* Digital or Binary Rollover Control */
  40 /* Enable PTP packet Processing for Version 2 Format */
  41 #define PTP_TCR_TSVER2ENA       BIT(10)
  42 /* Enable Processing of PTP over Ethernet Frames */
  43 #define PTP_TCR_TSIPENA         BIT(11)
  44 /* Enable Processing of PTP Frames Sent over IPv6-UDP */
  45 #define PTP_TCR_TSIPV6ENA       BIT(12)
  46 /* Enable Processing of PTP Frames Sent over IPv4-UDP */
  47 #define PTP_TCR_TSIPV4ENA       BIT(13)
  48 /* Enable Timestamp Snapshot for Event Messages */
  49 #define PTP_TCR_TSEVNTENA       BIT(14)
  50 /* Enable Snapshot for Messages Relevant to Master */
  51 #define PTP_TCR_TSMSTRENA       BIT(15)
  52 /* Select PTP packets for Taking Snapshots
  53  * On gmac4 specifically:
  54  * Enable SYNC, Pdelay_Req, Pdelay_Resp when TSEVNTENA is enabled.
  55  * or
  56  * Enable  SYNC, Follow_Up, Delay_Req, Delay_Resp, Pdelay_Req, Pdelay_Resp,
  57  * Pdelay_Resp_Follow_Up if TSEVNTENA is disabled
  58  */
  59 #define PTP_TCR_SNAPTYPSEL_1    BIT(16)
  60 /* Enable MAC address for PTP Frame Filtering */
  61 #define PTP_TCR_TSENMACADDR     BIT(18)
  62
  63 /* SSIR defines */
  64 #define PTP_SSIR_SSINC_MASK             0xff
  65 #define GMAC4_PTP_SSIR_SSINC_SHIFT      16
  66
  67 #endif  /* __STMMAC_PTP_H__ */