LXR linux/drivers/net/ethernet/broadcom/bnxt/bnxt

   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
  25struct bnxt_ptp_cfg {
  26        struct ptp_clock_info   ptp_info;
  27        struct ptp_clock        *ptp_clock;
  28        struct cyclecounter     cc;
  29        struct timecounter      tc;
  30        /* serialize timecounter access */
  31        spinlock_t              ptp_lock;
  32        struct sk_buff          *tx_skb;
  33        u64                     current_time;
  34        u64                     old_time;
  35        unsigned long           next_period;
  36        unsigned long           next_overflow_check;
  37        /* 48-bit PHC overflows in 78 hours.  Check overflow every 19 hours. */
  38        #define BNXT_PHC_OVERFLOW_PERIOD        (19 * 3600 * HZ)
  39
  40        u16                     tx_seqid;
  41        u16                     tx_hdr_off;
  42        struct bnxt             *bp;
  43        atomic_t                tx_avail;
  44#define BNXT_MAX_TX_TS  1
  45        u16                     rxctl;
  46#define BNXT_PTP_MSG_SYNC                       (1 << 0)
  47#define BNXT_PTP_MSG_DELAY_REQ                  (1 << 1)
  48#define BNXT_PTP_MSG_PDELAY_REQ                 (1 << 2)
  49#define BNXT_PTP_MSG_PDELAY_RESP                (1 << 3)
  50#define BNXT_PTP_MSG_FOLLOW_UP                  (1 << 8)
  51#define BNXT_PTP_MSG_DELAY_RESP                 (1 << 9)
  52#define BNXT_PTP_MSG_PDELAY_RESP_FOLLOW_UP      (1 << 10)
  53#define BNXT_PTP_MSG_ANNOUNCE                   (1 << 11)
  54#define BNXT_PTP_MSG_SIGNALING                  (1 << 12)
  55#define BNXT_PTP_MSG_MANAGEMENT                 (1 << 13)
  56#define BNXT_PTP_MSG_EVENTS             (BNXT_PTP_MSG_SYNC |            \
  57                                         BNXT_PTP_MSG_DELAY_REQ |       \
  58                                         BNXT_PTP_MSG_PDELAY_REQ |      \
  59                                         BNXT_PTP_MSG_PDELAY_RESP)
  60        u8                      tx_tstamp_en:1;
  61        int                     rx_filter;
  62
  63        u32                     refclk_regs[2];
  64        u32                     refclk_mapped_regs[2];
  65};
  66
  67#if BITS_PER_LONG == 32
  68#define BNXT_READ_TIME64(ptp, dst, src)         \
  69do {                                            \
  70        spin_lock_bh(&(ptp)->ptp_lock);         \
  71        (dst) = (src);                          \
  72        spin_unlock_bh(&(ptp)->ptp_lock);       \
  73} while (0)
  74#else
  75#define BNXT_READ_TIME64(ptp, dst, src)         \
  76        ((dst) = READ_ONCE(src))
  77#endif
  78
  79int bnxt_ptp_parse(struct sk_buff *skb, u16 *seq_id, u16 *hdr_off);
  80int bnxt_hwtstamp_set(struct net_device *dev, struct ifreq *ifr);
  81int bnxt_hwtstamp_get(struct net_device *dev, struct ifreq *ifr);
  82int bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb);
  83int bnxt_get_rx_ts_p5(struct bnxt *bp, u64 *ts, u32 pkt_ts);
  84int bnxt_ptp_init(struct bnxt *bp);
  85void bnxt_ptp_clear(struct bnxt *bp);
  86#endif
  87