Commit 8bcf6f04 authored by Pavan Chebbi's avatar Pavan Chebbi Committed by David S. Miller
Browse files

bnxt_en: Handle async event when the PHC is updated in RTC mode 



In Multi-host environment, when the PHC is updated by one host,
an async message from firmware will be sent to other hosts.
Re-initialize the timecounter when the driver receives this
async message.

Cc: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: default avatarSomnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: default avatarPavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e7b0afb6

drivers/net/ethernet/broadcom/bnxt/bnxt.c

+29 −0
Original line number Diff line number Diff line
@@ -233,6 +233,7 @@ static const u16 bnxt_async_events_arr[] = { 
	ASYNC_EVENT_CMPL_EVENT_ID_ECHO_REQUEST,

	ASYNC_EVENT_CMPL_EVENT_ID_PPS_TIMESTAMP,

	ASYNC_EVENT_CMPL_EVENT_ID_ERROR_REPORT,

	ASYNC_EVENT_CMPL_EVENT_ID_PHC_UPDATE,

};



static struct workqueue_struct *bnxt_pf_wq;
@@ -2079,6 +2080,16 @@ static void bnxt_event_error_report(struct bnxt *bp, u32 data1, u32 data2) 
	(BNXT_EVENT_RING_TYPE(data2) ==	\

	 ASYNC_EVENT_CMPL_RING_MONITOR_MSG_EVENT_DATA2_DISABLE_RING_TYPE_RX)



#define BNXT_EVENT_PHC_EVENT_TYPE(data1)	\

	(((data1) & ASYNC_EVENT_CMPL_PHC_UPDATE_EVENT_DATA1_FLAGS_MASK) >>\

	 ASYNC_EVENT_CMPL_PHC_UPDATE_EVENT_DATA1_FLAGS_SFT)



#define BNXT_EVENT_PHC_RTC_UPDATE(data1)	\

	(((data1) & ASYNC_EVENT_CMPL_PHC_UPDATE_EVENT_DATA1_PHC_TIME_MSB_MASK) >>\

	 ASYNC_EVENT_CMPL_PHC_UPDATE_EVENT_DATA1_PHC_TIME_MSB_SFT)



#define BNXT_PHC_BITS	48



static int bnxt_async_event_process(struct bnxt *bp,

				    struct hwrm_async_event_cmpl *cmpl)

{
@@ -2258,6 +2269,24 @@ static int bnxt_async_event_process(struct bnxt *bp, 
		bnxt_event_error_report(bp, data1, data2);

		goto async_event_process_exit;

	}

	case ASYNC_EVENT_CMPL_EVENT_ID_PHC_UPDATE: {

		switch (BNXT_EVENT_PHC_EVENT_TYPE(data1)) {

		case ASYNC_EVENT_CMPL_PHC_UPDATE_EVENT_DATA1_FLAGS_PHC_RTC_UPDATE:

			if (bp->fw_cap & BNXT_FW_CAP_PTP_RTC) {

				struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;

				u64 ns;



				spin_lock_bh(&ptp->ptp_lock);

				bnxt_ptp_update_current_time(bp);

				ns = (((u64)BNXT_EVENT_PHC_RTC_UPDATE(data1) <<

				       BNXT_PHC_BITS) | ptp->current_time);

				bnxt_ptp_rtc_timecounter_init(ptp, ns);

				spin_unlock_bh(&ptp->ptp_lock);

			}

			break;

		}

		goto async_event_process_exit;

	}

	case ASYNC_EVENT_CMPL_EVENT_ID_DEFERRED_RESPONSE: {

		u16 seq_id = le32_to_cpu(cmpl->event_data2) & 0xffff;