From e7b0afb69083ff7199dec51e7b9b1646e799943b Mon Sep 17 00:00:00 2001 From: Pavan Chebbi Date: Tue, 25 Jan 2022 23:40:12 -0500 Subject: bnxt_en: Implement .adjtime() for PTP RTC mode The adjusted time is set in the PHC in RTC mode. We also need to update the snapshots ptp->current_time and ptp->old_time when the time is adjusted. Cc: Richard Cochran Reviewed-by: Somnath Kotur Signed-off-by: Pavan Chebbi Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c | 36 +++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c') diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c index 066e5a9bb29e..a0b321a19361 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c @@ -148,11 +148,47 @@ static int bnxt_ptp_gettimex(struct ptp_clock_info *ptp_info, return 0; } +/* Caller holds ptp_lock */ +void bnxt_ptp_update_current_time(struct bnxt *bp) +{ + struct bnxt_ptp_cfg *ptp = bp->ptp_cfg; + + bnxt_refclk_read(ptp->bp, NULL, &ptp->current_time); + WRITE_ONCE(ptp->old_time, ptp->current_time); +} + +static int bnxt_ptp_adjphc(struct bnxt_ptp_cfg *ptp, s64 delta) +{ + struct hwrm_port_mac_cfg_input *req; + int rc; + + rc = hwrm_req_init(ptp->bp, req, HWRM_PORT_MAC_CFG); + if (rc) + return rc; + + req->enables = cpu_to_le32(PORT_MAC_CFG_REQ_ENABLES_PTP_ADJ_PHASE); + req->ptp_adj_phase = cpu_to_le64(delta); + + rc = hwrm_req_send(ptp->bp, req); + if (rc) { + netdev_err(ptp->bp->dev, "ptp adjphc failed. rc = %x\n", rc); + } else { + spin_lock_bh(&ptp->ptp_lock); + bnxt_ptp_update_current_time(ptp->bp); + spin_unlock_bh(&ptp->ptp_lock); + } + + return rc; +} + static int bnxt_ptp_adjtime(struct ptp_clock_info *ptp_info, s64 delta) { struct bnxt_ptp_cfg *ptp = container_of(ptp_info, struct bnxt_ptp_cfg, ptp_info); + if (ptp->bp->fw_cap & BNXT_FW_CAP_PTP_RTC) + return bnxt_ptp_adjphc(ptp, delta); + spin_lock_bh(&ptp->ptp_lock); timecounter_adjtime(&ptp->tc, delta); spin_unlock_bh(&ptp->ptp_lock); -- cgit v1.2.3