diff mbox

[dpdk-dev,1/2] net/bnx2x: fix for PCI FLR after ungraceful exit

Message ID 1524082509-25456-1-git-send-email-rasesh.mody@cavium.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Mody, Rasesh April 18, 2018, 8:15 p.m. UTC 
  From: Rasesh Mody <rasesh.mody@qlogic.com>

This patch provides a fix for PCI function level reset after an
ungraceful exit from an application. The fix is to enable internal
target read as part of device attach before getting device information
from device config space, device itself and shared memory. In addition
to that, add a 200ms delay for the recovery flow to complete.

Fixes: 540a211084a7 ("bnx2x: driver core")
Cc: stable@dpdk.org

Signed-off-by: Rasesh Mody <rasesh.mody@qlogic.com>
---
 drivers/net/bnx2x/bnx2x.c |   24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

Comments

Ferruh Yigit April 19, 2018, 10:15 p.m. UTC | #1 
On 4/18/2018 9:15 PM, Rasesh Mody wrote:
> From: Rasesh Mody <rasesh.mody@qlogic.com>
> 
> This patch provides a fix for PCI function level reset after an
> ungraceful exit from an application. The fix is to enable internal
> target read as part of device attach before getting device information
> from device config space, device itself and shared memory. In addition
> to that, add a 200ms delay for the recovery flow to complete.
> 
> Fixes: 540a211084a7 ("bnx2x: driver core")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Rasesh Mody <rasesh.mody@qlogic.com>

Series applied to dpdk-next-net/master, thanks.
diff mbox

Patch

diff --git a/drivers/net/bnx2x/bnx2x.c b/drivers/net/bnx2x/bnx2x.c
index 382b50f..bfd9cce 100644
--- a/drivers/net/bnx2x/bnx2x.c
+++ b/drivers/net/bnx2x/bnx2x.c
@@ -8285,16 +8285,6 @@  static int bnx2x_get_device_info(struct bnx2x_softc *sc)
 			REG_WR(sc, PXP2_REG_PGL_ADDR_90_F1, 0);
 			REG_WR(sc, PXP2_REG_PGL_ADDR_94_F1, 0);
 		}
-
-/*
- * Enable internal target-read (in case we are probed after PF
- * FLR). Must be done prior to any BAR read access. Only for
- * 57712 and up
- */
-		if (!CHIP_IS_E1x(sc)) {
-			REG_WR(sc, PGLUE_B_REG_INTERNAL_PFID_ENABLE_TARGET_READ,
-			       1);
-		}
 	}
 
 	/* get the nvram size */
@@ -9671,7 +9661,17 @@  int bnx2x_attach(struct bnx2x_softc *sc)
 	bnx2x_init_rte(sc);
 
 	if (IS_PF(sc)) {
-/* get device info and set params */
+		/* Enable internal target-read (in case we are probed after PF
+		 * FLR). Must be done prior to any BAR read access. Only for
+		 * 57712 and up
+		 */
+		if (!CHIP_IS_E1x(sc)) {
+			REG_WR(sc, PGLUE_B_REG_INTERNAL_PFID_ENABLE_TARGET_READ,
+			       1);
+			DELAY(200000);
+		}
+
+		/* get device info and set params */
 		if (bnx2x_get_device_info(sc) != 0) {
 			PMD_DRV_LOG(NOTICE, "getting device info");
 			return -ENXIO;
@@ -9680,7 +9680,7 @@  int bnx2x_attach(struct bnx2x_softc *sc)
 /* get phy settings from shmem and 'and' against admin settings */
 		bnx2x_get_phy_info(sc);
 	} else {
-/* Left mac of VF unfilled, PF should set it for VF */
+		/* Left mac of VF unfilled, PF should set it for VF */
 		memset(sc->link_params.mac_addr, 0, ETHER_ADDR_LEN);
 	}