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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: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavan Chebbi 2022-01-25 23:40:13 -05:00 committed by David S. Miller
parent e7b0afb690
commit 8bcf6f04d4
1 changed files with 29 additions and 0 deletions
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29
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -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;