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 6 14 #define BNXT_PTP_GRC_WIN_BASE 0x6000 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 PORT_TS_QUERY_REQ_ENABLES_PTP_HDR_OFFSET) 24 25 struct pps_pin { 26 u8 event; 27 u8 usage; 28 u8 state; 29 }; 30 31 #define TSIO_PIN_VALID(pin) ((pin) >= 0 && (pin) < (BNXT_MAX_TSIO_PINS)) 32 33 #define EVENT_DATA2_PPS_EVENT_TYPE(data2) \ 34 ((data2) & ASYNC_EVENT_CMPL_PPS_TIMESTAMP_EVENT_DATA2_EVENT_TYPE) 35 36 #define EVENT_DATA2_PPS_PIN_NUM(data2) \ 37 (((data2) & \ 38 ASYNC_EVENT_CMPL_PPS_TIMESTAMP_EVENT_DATA2_PIN_NUMBER_MASK) >>\ 39 ASYNC_EVENT_CMPL_PPS_TIMESTAMP_EVENT_DATA2_PIN_NUMBER_SFT) 40 41 #define BNXT_DATA2_UPPER_MSK \ 42 ASYNC_EVENT_CMPL_PPS_TIMESTAMP_EVENT_DATA2_PPS_TIMESTAMP_UPPER_MASK 43 44 #define BNXT_DATA2_UPPER_SFT \ 45 (32 - \ 46 ASYNC_EVENT_CMPL_PPS_TIMESTAMP_EVENT_DATA2_PPS_TIMESTAMP_UPPER_SFT) 47 48 #define BNXT_DATA1_LOWER_MSK \ 49 ASYNC_EVENT_CMPL_PPS_TIMESTAMP_EVENT_DATA1_PPS_TIMESTAMP_LOWER_MASK 50 51 #define BNXT_DATA1_LOWER_SFT \ 52 ASYNC_EVENT_CMPL_PPS_TIMESTAMP_EVENT_DATA1_PPS_TIMESTAMP_LOWER_SFT 53 54 #define EVENT_PPS_TS(data2, data1) \ 55 (((u64)((data2) & BNXT_DATA2_UPPER_MSK) << BNXT_DATA2_UPPER_SFT) |\ 56 (((data1) & BNXT_DATA1_LOWER_MSK) >> BNXT_DATA1_LOWER_SFT)) 57 58 #define BNXT_PPS_PIN_DISABLE 0 59 #define BNXT_PPS_PIN_ENABLE 1 60 #define BNXT_PPS_PIN_NONE 0 61 #define BNXT_PPS_PIN_PPS_IN 1 62 #define BNXT_PPS_PIN_PPS_OUT 2 63 #define BNXT_PPS_PIN_SYNC_IN 3 64 #define BNXT_PPS_PIN_SYNC_OUT 4 65 66 #define BNXT_PPS_EVENT_INTERNAL 1 67 #define BNXT_PPS_EVENT_EXTERNAL 2 68 69 struct bnxt_pps { 70 u8 num_pins; 71 #define BNXT_MAX_TSIO_PINS 4 72 struct pps_pin pins[BNXT_MAX_TSIO_PINS]; 73 }; 74 75 struct bnxt_ptp_cfg { 76 struct ptp_clock_info ptp_info; 77 struct ptp_clock *ptp_clock; 78 struct cyclecounter cc; 79 struct timecounter tc; 80 struct bnxt_pps pps_info; 81 /* serialize timecounter access */ 82 spinlock_t ptp_lock; 83 struct sk_buff *tx_skb; 84 u64 current_time; 85 u64 old_time; 86 unsigned long next_period; 87 unsigned long next_overflow_check; 88 /* 48-bit PHC overflows in 78 hours. Check overflow every 19 hours. */ 89 #define BNXT_PHC_OVERFLOW_PERIOD (19 * 3600 * HZ) 90 91 u16 tx_seqid; 92 u16 tx_hdr_off; 93 struct bnxt *bp; 94 atomic_t tx_avail; 95 #define BNXT_MAX_TX_TS 1 96 u16 rxctl; 97 #define BNXT_PTP_MSG_SYNC (1 << 0) 98 #define BNXT_PTP_MSG_DELAY_REQ (1 << 1) 99 #define BNXT_PTP_MSG_PDELAY_REQ (1 << 2) 100 #define BNXT_PTP_MSG_PDELAY_RESP (1 << 3) 101 #define BNXT_PTP_MSG_FOLLOW_UP (1 << 8) 102 #define BNXT_PTP_MSG_DELAY_RESP (1 << 9) 103 #define BNXT_PTP_MSG_PDELAY_RESP_FOLLOW_UP (1 << 10) 104 #define BNXT_PTP_MSG_ANNOUNCE (1 << 11) 105 #define BNXT_PTP_MSG_SIGNALING (1 << 12) 106 #define BNXT_PTP_MSG_MANAGEMENT (1 << 13) 107 #define BNXT_PTP_MSG_EVENTS (BNXT_PTP_MSG_SYNC | \ 108 BNXT_PTP_MSG_DELAY_REQ | \ 109 BNXT_PTP_MSG_PDELAY_REQ | \ 110 BNXT_PTP_MSG_PDELAY_RESP) 111 u8 tx_tstamp_en:1; 112 int rx_filter; 113 114 u32 refclk_regs[2]; 115 u32 refclk_mapped_regs[2]; 116 }; 117 118 #if BITS_PER_LONG == 32 119 #define BNXT_READ_TIME64(ptp, dst, src) \ 120 do { \ 121 spin_lock_bh(&(ptp)->ptp_lock); \ 122 (dst) = (src); \ 123 spin_unlock_bh(&(ptp)->ptp_lock); \ 124 } while (0) 125 #else 126 #define BNXT_READ_TIME64(ptp, dst, src) \ 127 ((dst) = READ_ONCE(src)) 128 #endif 129 130 int bnxt_ptp_parse(struct sk_buff *skb, u16 *seq_id, u16 *hdr_off); 131 void bnxt_ptp_pps_event(struct bnxt *bp, u32 data1, u32 data2); 132 void bnxt_ptp_reapply_pps(struct bnxt *bp); 133 int bnxt_hwtstamp_set(struct net_device *dev, struct ifreq *ifr); 134 int bnxt_hwtstamp_get(struct net_device *dev, struct ifreq *ifr); 135 int bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb); 136 int bnxt_get_rx_ts_p5(struct bnxt *bp, u64 *ts, u32 pkt_ts); 137 int bnxt_ptp_init(struct bnxt *bp); 138 void bnxt_ptp_clear(struct bnxt *bp); 139 #endif 140