netdev - [PATCH iwl-net v4] ice: implement AQ download pkg retry

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Date: Tue,  4 Jun 2024 14:55:14 +0200
From: Wojciech Drewek <wojciech.drewek@...el.com>
To: netdev@...r.kernel.org
Cc: intel-wired-lan@...ts.osuosl.org,
	kuba@...nel.org,
	jacob.e.keller@...el.com
Subject: [PATCH iwl-net v4] ice: implement AQ download pkg retry

ice_aqc_opc_download_pkg (0x0C40) AQ sporadically returns error due
to FW issue. Fix this by retrying five times before moving to
Safe Mode. Sleep for 20 ms before retrying. This was tested with the
4.40 firmware.

Fixes: c76488109616 ("ice: Implement Dynamic Device Personalization (DDP) download")
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@...el.com>
Reviewed-by: Brett Creeley <brett.creeley@....com>
---
v2: remove "failure" from log message
v3: don't sleep in the last iteration of the wait loop
v4: Mention the delay in the commit msg
---
 drivers/net/ethernet/intel/ice/ice_ddp.c | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_ddp.c b/drivers/net/ethernet/intel/ice/ice_ddp.c
index ce5034ed2b24..f182179529b7 100644
--- a/drivers/net/ethernet/intel/ice/ice_ddp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ddp.c
@@ -1339,6 +1339,7 @@ ice_dwnld_cfg_bufs_no_lock(struct ice_hw *hw, struct ice_buf *bufs, u32 start,
 
 	for (i = 0; i < count; i++) {
 		bool last = false;
+		int try_cnt = 0;
 		int status;
 
 		bh = (struct ice_buf_hdr *)(bufs + start + i);
@@ -1346,8 +1347,26 @@ ice_dwnld_cfg_bufs_no_lock(struct ice_hw *hw, struct ice_buf *bufs, u32 start,
 		if (indicate_last)
 			last = ice_is_last_download_buffer(bh, i, count);
 
-		status = ice_aq_download_pkg(hw, bh, ICE_PKG_BUF_SIZE, last,
-					     &offset, &info, NULL);
+		while (1) {
+			status = ice_aq_download_pkg(hw, bh, ICE_PKG_BUF_SIZE,
+						     last, &offset, &info,
+						     NULL);
+			if (hw->adminq.sq_last_status != ICE_AQ_RC_ENOSEC &&
+			    hw->adminq.sq_last_status != ICE_AQ_RC_EBADSIG)
+				break;
+
+			try_cnt++;
+
+			if (try_cnt == 5)
+				break;
+
+			msleep(20);
+		}
+
+		if (try_cnt)
+			dev_dbg(ice_hw_to_dev(hw),
+				"ice_aq_download_pkg number of retries: %d\n",
+				try_cnt);
 
 		/* Save AQ status from download package */
 		if (status) {
-- 
2.40.1