diff mbox series

[net-next,7/7] bnxt_en: Enhance retry of the first message to the firmware.

Message ID 1616396925-16596-8-git-send-email-michael.chan@broadcom.com (mailing list archive)
State Accepted
Commit 861aae786f2f7e1cab7926f7bb7783cb893e7edb
Delegated to: Netdev Maintainers
Headers show
Series bnxt_en: Error recovery improvements. | expand

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Commit Message

Michael Chan March 22, 2021, 7:08 a.m. UTC 
Two enhancements:

1. Read the health status first before sending the first
HWRM_VER_GET message to firmware instead of the other way around.
This guarantees we got the accurate health status before we attempt
to send the message.

2. We currently only retry sending the first HWRM_VER_GET message to
the firmware if the firmware is in the process of booting.  If the
firmware is in error state and is doing core dump for example, the
driver should also retry if the health register has the RECOVERING
flag set.  This flag indicates the firmware will undergo recovery
soon.  Modify the retry logic to retry for this case as well.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 5 +++--
 drivers/net/ethernet/broadcom/bnxt/bnxt.h | 4 ++++
 2 files changed, 7 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 6db5e927a473..6f13642121c4 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -9530,9 +9530,10 @@  static int bnxt_try_recover_fw(struct bnxt *bp)
 
 		mutex_lock(&bp->hwrm_cmd_lock);
 		do {
-			rc = __bnxt_hwrm_ver_get(bp, true);
 			sts = bnxt_fw_health_readl(bp, BNXT_FW_HEALTH_REG);
-			if (!sts || !BNXT_FW_IS_BOOTING(sts))
+			rc = __bnxt_hwrm_ver_get(bp, true);
+			if (!sts || (!BNXT_FW_IS_BOOTING(sts) &&
+				     !BNXT_FW_IS_RECOVERING(sts)))
 				break;
 			retry++;
 		} while (rc == -EBUSY && retry < BNXT_FW_RETRY);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index e77d60712954..29061c577baa 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1564,6 +1564,7 @@  struct bnxt_fw_reporter_ctx {
 #define BNXT_FW_STATUS_HEALTH_MSK	0xffff
 #define BNXT_FW_STATUS_HEALTHY		0x8000
 #define BNXT_FW_STATUS_SHUTDOWN		0x100000
+#define BNXT_FW_STATUS_RECOVERING	0x400000
 
 #define BNXT_FW_IS_HEALTHY(sts)		(((sts) & BNXT_FW_STATUS_HEALTH_MSK) ==\
 					 BNXT_FW_STATUS_HEALTHY)
@@ -1574,6 +1575,9 @@  struct bnxt_fw_reporter_ctx {
 #define BNXT_FW_IS_ERR(sts)		(((sts) & BNXT_FW_STATUS_HEALTH_MSK) > \
 					 BNXT_FW_STATUS_HEALTHY)
 
+#define BNXT_FW_IS_RECOVERING(sts)	(BNXT_FW_IS_ERR(sts) &&		       \
+					 ((sts) & BNXT_FW_STATUS_RECOVERING))
+
 #define BNXT_FW_RETRY			5
 #define BNXT_FW_IF_RETRY		10