netdev - [PATCH net-next v2 2/3] bnxt: Defer PTP initialization to after querying function caps

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Date:   Tue, 21 Mar 2023 07:44:48 -0700
From:   Pavan Chebbi <pavan.chebbi@...adcom.com>
To:     michael.chan@...adcom.com, kuba@...nel.org
Cc:     davem@...emloft.net, edumazet@...gle.com, gospo@...adcom.com,
        netdev@...r.kernel.org, pabeni@...hat.com,
        richardcochran@...il.com, Pavan Chebbi <pavan.chebbi@...adcom.com>
Subject: [PATCH net-next v2 2/3] bnxt: Defer PTP initialization to after querying function caps

Driver uses the flag BNXT_FLAG_MULTI_HOST to determine whether
to use non-realtime mode PHC when running on a multi host NIC.
However when ptp initializes on a NIC with shared PHC, we still
don't have this flag set yet because HWRM_FUNC_QCFG is issued
much later.

Move the ptp initialization code after we have issued func_qcfg.
The next patch will use the BNXT_FLAG_MULTI_HOST flag during PTP
initialization.

Signed-off-by: Pavan Chebbi <pavan.chebbi@...adcom.com>
Reviewed-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 4 +++-
 drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index f533a8f46217..656a28ac2ff0 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -7769,7 +7769,7 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
 		if (flags & FUNC_QCAPS_RESP_FLAGS_WOL_MAGICPKT_SUPPORTED)
 			bp->flags |= BNXT_FLAG_WOL_CAP;
 		if (flags & FUNC_QCAPS_RESP_FLAGS_PTP_SUPPORTED) {
-			__bnxt_hwrm_ptp_qcfg(bp);
+			bp->fw_cap |= BNXT_FW_CAP_PTP;
 		} else {
 			bnxt_ptp_clear(bp);
 			kfree(bp->ptp_cfg);
@@ -12298,6 +12298,8 @@ static int bnxt_fw_init_one_p2(struct bnxt *bp)
 	bnxt_hwrm_vnic_qcaps(bp);
 	bnxt_hwrm_port_led_qcaps(bp);
 	bnxt_ethtool_init(bp);
+	if (bp->fw_cap & BNXT_FW_CAP_PTP)
+		__bnxt_hwrm_ptp_qcfg(bp);
 	bnxt_dcb_init(bp);
 	return 0;
 }
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index d7eb0d244f42..0eeaed95a4ac 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1996,6 +1996,7 @@ struct bnxt {
 	#define BNXT_FW_CAP_HOT_RESET_IF		BIT_ULL(29)
 	#define BNXT_FW_CAP_RING_MONITOR		BIT_ULL(30)
 	#define BNXT_FW_CAP_DBG_QCAPS			BIT_ULL(31)
+	#define BNXT_FW_CAP_PTP				BIT_ULL(32)
 
 	u32			fw_dbg_cap;
 
-- 
2.39.1


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