1 /* Broadcom NetXtreme-C/E network driver. 2 * 3 * Copyright (c) 2021 Broadcom Inc. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation. 8 */ 9 10 #ifndef BNXT_PTP_H 11 #define BNXT_PTP_H 12 13 #define BNXT_PTP_GRC_WIN 5 14 #define BNXT_PTP_GRC_WIN_BASE 0x5000 15 16 #define BNXT_MAX_PHC_DRIFT 31000000 17 #define BNXT_LO_TIMER_MASK 0x0000ffffffffUL 18 #define BNXT_HI_TIMER_MASK 0xffff00000000UL 19 20 #define BNXT_PTP_QTS_TIMEOUT 1000 21 #define BNXT_PTP_QTS_TX_ENABLES (PORT_TS_QUERY_REQ_ENABLES_PTP_SEQ_ID | \ 22 PORT_TS_QUERY_REQ_ENABLES_TS_REQ_TIMEOUT) 23 24 struct bnxt_ptp_cfg { 25 struct ptp_clock_info ptp_info; 26 struct ptp_clock *ptp_clock; 27 struct cyclecounter cc; 28 struct timecounter tc; 29 /* serialize timecounter access */ 30 spinlock_t ptp_lock; 31 struct sk_buff *tx_skb; 32 u64 current_time; 33 u64 old_time; 34 unsigned long next_period; 35 unsigned long next_overflow_check; 36 /* 48-bit PHC overflows in 78 hours. Check overflow every 19 hours. */ 37 #define BNXT_PHC_OVERFLOW_PERIOD (19 * 3600 * HZ) 38 39 u16 tx_seqid; 40 struct bnxt *bp; 41 atomic_t tx_avail; 42 #define BNXT_MAX_TX_TS 1 43 u16 rxctl; 44 #define BNXT_PTP_MSG_SYNC (1 << 0) 45 #define BNXT_PTP_MSG_DELAY_REQ (1 << 1) 46 #define BNXT_PTP_MSG_PDELAY_REQ (1 << 2) 47 #define BNXT_PTP_MSG_PDELAY_RESP (1 << 3) 48 #define BNXT_PTP_MSG_FOLLOW_UP (1 << 8) 49 #define BNXT_PTP_MSG_DELAY_RESP (1 << 9) 50 #define BNXT_PTP_MSG_PDELAY_RESP_FOLLOW_UP (1 << 10) 51 #define BNXT_PTP_MSG_ANNOUNCE (1 << 11) 52 #define BNXT_PTP_MSG_SIGNALING (1 << 12) 53 #define BNXT_PTP_MSG_MANAGEMENT (1 << 13) 54 #define BNXT_PTP_MSG_EVENTS (BNXT_PTP_MSG_SYNC | \ 55 BNXT_PTP_MSG_DELAY_REQ | \ 56 BNXT_PTP_MSG_PDELAY_REQ | \ 57 BNXT_PTP_MSG_PDELAY_RESP) 58 u8 tx_tstamp_en:1; 59 int rx_filter; 60 61 u32 refclk_regs[2]; 62 u32 refclk_mapped_regs[2]; 63 }; 64 65 #if BITS_PER_LONG == 32 66 #define BNXT_READ_TIME64(ptp, dst, src) \ 67 do { \ 68 spin_lock_bh(&(ptp)->ptp_lock); \ 69 (dst) = (src); \ 70 spin_unlock_bh(&(ptp)->ptp_lock); \ 71 } while (0) 72 #else 73 #define BNXT_READ_TIME64(ptp, dst, src) \ 74 ((dst) = READ_ONCE(src)) 75 #endif 76 77 int bnxt_ptp_parse(struct sk_buff *skb, u16 *seq_id); 78 int bnxt_hwtstamp_set(struct net_device *dev, struct ifreq *ifr); 79 int bnxt_hwtstamp_get(struct net_device *dev, struct ifreq *ifr); 80 int bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb); 81 int bnxt_get_rx_ts_p5(struct bnxt *bp, u64 *ts, u32 pkt_ts); 82 int bnxt_ptp_init(struct bnxt *bp); 83 void bnxt_ptp_clear(struct bnxt *bp); 84 #endif 85