[dpdk-stable] patch 'net/bnx2x: fix VF link state update' has been queued to stable release 18.08.1

[Kevin Traynor <ktraynor@redhat.com>]

Hi,

FYI, your patch has been queued to stable release 18.08.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 12/08/18. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the patch applied
to the branch. If the code is different (ie: not only metadata diffs), due for example to
a change in context or macro names, please double check it.

Thanks.

Kevin Traynor

---
>From e2ac0b8aca9a15a45ad3bd112955b71b9abc0667 Mon Sep 17 00:00:00 2001
From: Rasesh Mody <rasesh.mody@cavium.com>
Date: Thu, 8 Nov 2018 21:19:30 +0000
Subject: [PATCH] net/bnx2x: fix VF link state update

[ upstream commit 39ae74caa0d1158df15ea1e2f8e893eee1a2189d ]

In general the VF driver should not access the chip. For VF link status
update, VF driver should not use HW lock, use bnx2x_link_report_locked()
instead.
Add few prints for releasing previously held HW locks.

Fixes: a9b58b15ed51 ("net/bnx2x: fix to add PHY lock")

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>
---
 drivers/net/bnx2x/bnx2x.c | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/drivers/net/bnx2x/bnx2x.c b/drivers/net/bnx2x/bnx2x.c
index 279759366..a6d2687a2 100644
--- a/drivers/net/bnx2x/bnx2x.c
+++ b/drivers/net/bnx2x/bnx2x.c
@@ -200,6 +200,10 @@ static int bnx2x_acquire_hw_lock(struct bnx2x_softc *sc, uint32_t resource)
 	int cnt;
 
+#ifndef RTE_LIBRTE_BNX2X_DEBUG_PERIODIC
 	if (resource)
 		PMD_INIT_FUNC_TRACE(sc);
+#else
+	PMD_INIT_FUNC_TRACE(sc);
+#endif
 
 	/* validate the resource is within range */
@@ -249,6 +253,10 @@ static int bnx2x_release_hw_lock(struct bnx2x_softc *sc, uint32_t resource)
 	uint32_t hw_lock_control_reg;
 
+#ifndef RTE_LIBRTE_BNX2X_DEBUG_PERIODIC
 	if (resource)
 		PMD_INIT_FUNC_TRACE(sc);
+#else
+	PMD_INIT_FUNC_TRACE(sc);
+#endif
 
 	/* validate the resource is within range */
@@ -7042,5 +7050,5 @@ void bnx2x_link_status_update(struct bnx2x_softc *sc)
 		bnx2x_link_report(sc);
 	} else {
-		bnx2x_link_report(sc);
+		bnx2x_link_report_locked(sc);
 		bnx2x_stats_handle(sc, STATS_EVENT_LINK_UP);
 	}
@@ -9389,4 +9397,6 @@ static int bnx2x_prev_unload(struct bnx2x_softc *sc)
 	uint32_t rc = 0;
 
+	PMD_INIT_FUNC_TRACE(sc);
+
 	/*
 	 * Clear HW from errors which may have resulted from an interrupted
@@ -9396,20 +9406,21 @@ static int bnx2x_prev_unload(struct bnx2x_softc *sc)
 
 	/* Release previously held locks */
-	if (SC_FUNC(sc) <= 5)
-		hw_lock_reg = (MISC_REG_DRIVER_CONTROL_1 + SC_FUNC(sc) * 8);
-	else
-		hw_lock_reg =
-		    (MISC_REG_DRIVER_CONTROL_7 + (SC_FUNC(sc) - 6) * 8);
+	hw_lock_reg = (SC_FUNC(sc) <= 5) ?
+			(MISC_REG_DRIVER_CONTROL_1 + SC_FUNC(sc) * 8) :
+			(MISC_REG_DRIVER_CONTROL_7 + (SC_FUNC(sc) - 6) * 8);
 
 	hw_lock_val = (REG_RD(sc, hw_lock_reg));
 	if (hw_lock_val) {
 		if (hw_lock_val & HW_LOCK_RESOURCE_NVRAM) {
+			PMD_DRV_LOG(DEBUG, sc, "Releasing previously held NVRAM lock\n");
 			REG_WR(sc, MCP_REG_MCPR_NVM_SW_ARB,
 			       (MCPR_NVM_SW_ARB_ARB_REQ_CLR1 << SC_PORT(sc)));
 		}
+		PMD_DRV_LOG(DEBUG, sc, "Releasing previously held HW lock\n");
 		REG_WR(sc, hw_lock_reg, 0xffffffff);
 	}
 
 	if (MCPR_ACCESS_LOCK_LOCK & REG_RD(sc, MCP_REG_MCPR_ACCESS_LOCK)) {
+		PMD_DRV_LOG(DEBUG, sc, "Releasing previously held ALR\n");
 		REG_WR(sc, MCP_REG_MCPR_ACCESS_LOCK, 0);
 	}
@@ -9741,4 +9752,6 @@ int bnx2x_attach(struct bnx2x_softc *sc)
 		    (SHMEM_RD(sc, func_mb[SC_FW_MB_IDX(sc)].drv_mb_header) &
 		     DRV_MSG_SEQ_NUMBER_MASK);
+		PMD_DRV_LOG(DEBUG, sc, "prev unload fw_seq 0x%04x",
+			    sc->fw_seq);
 		bnx2x_prev_unload(sc);
 	}
-- 
2.19.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2018-11-29 13:11:35.466044197 +0000
+++ 0017-net-bnx2x-fix-VF-link-state-update.patch	2018-11-29 13:11:34.000000000 +0000
@@ -1,15 +1,16 @@
-From 39ae74caa0d1158df15ea1e2f8e893eee1a2189d Mon Sep 17 00:00:00 2001
+From e2ac0b8aca9a15a45ad3bd112955b71b9abc0667 Mon Sep 17 00:00:00 2001
 From: Rasesh Mody <rasesh.mody@cavium.com>
 Date: Thu, 8 Nov 2018 21:19:30 +0000
 Subject: [PATCH] net/bnx2x: fix VF link state update
 
+[ upstream commit 39ae74caa0d1158df15ea1e2f8e893eee1a2189d ]
+
 In general the VF driver should not access the chip. For VF link status
 update, VF driver should not use HW lock, use bnx2x_link_report_locked()
 instead.
 Add few prints for releasing previously held HW locks.
 
 Fixes: a9b58b15ed51 ("net/bnx2x: fix to add PHY lock")
-Cc: stable@dpdk.org
 
 Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>
 ---