diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h | 83 |
1 files changed, 65 insertions, 18 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h index fce8dc39a7d0..a95f05e9c579 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h @@ -21,8 +21,11 @@ #define BNXT_DEVCLK_FREQ 1000000 #define BNXT_LO_TIMER_MASK 0x0000ffffffffUL #define BNXT_HI_TIMER_MASK 0xffff00000000UL +#define BNXT_HI_TIMER_SHIFT 24 +#define BNXT_PTP_DFLT_TX_TMO 1000 /* ms */ #define BNXT_PTP_QTS_TIMEOUT 1000 +#define BNXT_PTP_QTS_MAX_TMO_US 65535U #define BNXT_PTP_QTS_TX_ENABLES (PORT_TS_QUERY_REQ_ENABLES_PTP_SEQ_ID | \ PORT_TS_QUERY_REQ_ENABLES_TS_REQ_TIMEOUT | \ PORT_TS_QUERY_REQ_ENABLES_PTP_HDR_OFFSET) @@ -77,6 +80,22 @@ struct bnxt_pps { struct pps_pin pins[BNXT_MAX_TSIO_PINS]; }; +struct bnxt_ptp_stats { + u64 ts_pkts; + u64 ts_lost; + atomic64_t ts_err; +}; + +#define BNXT_MAX_TX_TS 4 +#define NEXT_TXTS(idx) (((idx) + 1) & (BNXT_MAX_TX_TS - 1)) + +struct bnxt_ptp_tx_req { + struct sk_buff *tx_skb; + u16 tx_seqid; + u16 tx_hdr_off; + unsigned long abs_txts_tmo; +}; + struct bnxt_ptp_cfg { struct ptp_clock_info ptp_info; struct ptp_clock *ptp_clock; @@ -84,21 +103,22 @@ struct bnxt_ptp_cfg { struct timecounter tc; struct bnxt_pps pps_info; /* serialize timecounter access */ - spinlock_t ptp_lock; - struct sk_buff *tx_skb; + seqlock_t ptp_lock; + /* serialize ts tx request queuing */ + spinlock_t ptp_tx_lock; u64 current_time; - u64 old_time; unsigned long next_period; unsigned long next_overflow_check; u32 cmult; + /* cache of upper 24 bits of cyclecoutner. 8 bits are used to check for roll-over */ + u32 old_time; /* a 23b shift cyclecounter will overflow in ~36 mins. Check overflow every 18 mins. */ #define BNXT_PHC_OVERFLOW_PERIOD (18 * 60 * HZ) - u16 tx_seqid; - u16 tx_hdr_off; + struct bnxt_ptp_tx_req txts_req[BNXT_MAX_TX_TS]; + struct bnxt *bp; - atomic_t tx_avail; -#define BNXT_MAX_TX_TS 1 + u32 tx_avail; u16 rxctl; #define BNXT_PTP_MSG_SYNC (1 << 0) #define BNXT_PTP_MSG_DELAY_REQ (1 << 1) @@ -115,24 +135,25 @@ struct bnxt_ptp_cfg { BNXT_PTP_MSG_PDELAY_REQ | \ BNXT_PTP_MSG_PDELAY_RESP) u8 tx_tstamp_en:1; + u8 rtc_configured:1; int rx_filter; u32 tstamp_filters; u32 refclk_regs[2]; u32 refclk_mapped_regs[2]; + u32 txts_tmo; + u16 txts_prod; + u16 txts_cons; + + struct bnxt_ptp_stats stats; }; -#if BITS_PER_LONG == 32 -#define BNXT_READ_TIME64(ptp, dst, src) \ +#define BNXT_PTP_INC_TX_AVAIL(ptp) \ do { \ - spin_lock_bh(&(ptp)->ptp_lock); \ - (dst) = (src); \ - spin_unlock_bh(&(ptp)->ptp_lock); \ + spin_lock_bh(&(ptp)->ptp_tx_lock); \ + (ptp)->tx_avail++; \ + spin_unlock_bh(&(ptp)->ptp_tx_lock); \ } while (0) -#else -#define BNXT_READ_TIME64(ptp, dst, src) \ - ((dst) = READ_ONCE(src)) -#endif int bnxt_ptp_parse(struct sk_buff *skb, u16 *seq_id, u16 *hdr_off); void bnxt_ptp_update_current_time(struct bnxt *bp); @@ -141,10 +162,36 @@ int bnxt_ptp_cfg_tstamp_filters(struct bnxt *bp); void bnxt_ptp_reapply_pps(struct bnxt *bp); int bnxt_hwtstamp_set(struct net_device *dev, struct ifreq *ifr); int bnxt_hwtstamp_get(struct net_device *dev, struct ifreq *ifr); -int bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb); +int bnxt_ptp_get_txts_prod(struct bnxt_ptp_cfg *ptp, u16 *prod); +void bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb, u16 prod); int bnxt_get_rx_ts_p5(struct bnxt *bp, u64 *ts, u32 pkt_ts); +void bnxt_tx_ts_cmp(struct bnxt *bp, struct bnxt_napi *bnapi, + struct tx_ts_cmp *tscmp); void bnxt_ptp_rtc_timecounter_init(struct bnxt_ptp_cfg *ptp, u64 ns); int bnxt_ptp_init_rtc(struct bnxt *bp, bool phc_cfg); -int bnxt_ptp_init(struct bnxt *bp, bool phc_cfg); +int bnxt_ptp_init(struct bnxt *bp); void bnxt_ptp_clear(struct bnxt *bp); +static inline u64 bnxt_timecounter_cyc2time(struct bnxt_ptp_cfg *ptp, u64 ts) +{ + unsigned int seq; + u64 ns; + + do { + seq = read_seqbegin(&ptp->ptp_lock); + ns = timecounter_cyc2time(&ptp->tc, ts); + } while (read_seqretry(&ptp->ptp_lock, seq)); + + return ns; +} + +static inline u64 bnxt_extend_cycles_32b_to_48b(struct bnxt_ptp_cfg *ptp, u32 ts) +{ + u64 time, cycles; + + time = (u64)READ_ONCE(ptp->old_time) << BNXT_HI_TIMER_SHIFT; + cycles = (time & BNXT_HI_TIMER_MASK) | ts; + if (ts < (time & BNXT_LO_TIMER_MASK)) + cycles += BNXT_LO_TIMER_MASK + 1; + return cycles; +} #endif |