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 u16 tx_seqid; 36 struct bnxt *bp; 37 atomic_t tx_avail; 38 #define BNXT_MAX_TX_TS 1 39 u16 rxctl; 40 #define BNXT_PTP_MSG_SYNC (1 << 0) 41 #define BNXT_PTP_MSG_DELAY_REQ (1 << 1) 42 #define BNXT_PTP_MSG_PDELAY_REQ (1 << 2) 43 #define BNXT_PTP_MSG_PDELAY_RESP (1 << 3) 44 #define BNXT_PTP_MSG_FOLLOW_UP (1 << 8) 45 #define BNXT_PTP_MSG_DELAY_RESP (1 << 9) 46 #define BNXT_PTP_MSG_PDELAY_RESP_FOLLOW_UP (1 << 10) 47 #define BNXT_PTP_MSG_ANNOUNCE (1 << 11) 48 #define BNXT_PTP_MSG_SIGNALING (1 << 12) 49 #define BNXT_PTP_MSG_MANAGEMENT (1 << 13) 50 #define BNXT_PTP_MSG_EVENTS (BNXT_PTP_MSG_SYNC | \ 51 BNXT_PTP_MSG_DELAY_REQ | \ 52 BNXT_PTP_MSG_PDELAY_REQ | \ 53 BNXT_PTP_MSG_PDELAY_RESP) 54 u8 tx_tstamp_en:1; 55 int rx_filter; 56 57 u32 refclk_regs[2]; 58 u32 refclk_mapped_regs[2]; 59 }; 60 61 #if BITS_PER_LONG == 32 62 #define BNXT_READ_TIME64(ptp, dst, src) \ 63 do { \ 64 spin_lock_bh(&(ptp)->ptp_lock); \ 65 (dst) = (src); \ 66 spin_unlock_bh(&(ptp)->ptp_lock); \ 67 } while (0) 68 #else 69 #define BNXT_READ_TIME64(ptp, dst, src) \ 70 ((dst) = READ_ONCE(src)) 71 #endif 72 73 int bnxt_ptp_parse(struct sk_buff *skb, u16 *seq_id); 74 int bnxt_hwtstamp_set(struct net_device *dev, struct ifreq *ifr); 75 int bnxt_hwtstamp_get(struct net_device *dev, struct ifreq *ifr); 76 int bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb); 77 int bnxt_get_rx_ts_p5(struct bnxt *bp, u64 *ts, u32 pkt_ts); 78 int bnxt_ptp_init(struct bnxt *bp); 79 void bnxt_ptp_clear(struct bnxt *bp); 80 #endif 81