mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 16:31:13 +00:00
003b9ff61c
A patch to resolve an issue was found in MediaTek's GPL-licensed SDK:
In the mtk_ppe_stop() function, the PPE scan mode is not disabled before
disabling the PPE. This can potentially lead to a hang during the process
of disabling the PPE.
Without this patch, the PPE may experience a hang during the reboot test.
Reference: b40da332df
Suggested-by: Bc-bocun Chen <bc-bocun.chen@mediatek.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
60 lines
2.1 KiB
Diff
60 lines
2.1 KiB
Diff
From c8262ebbf7ca546dd5ead3c0383a89eb401627ff Mon Sep 17 00:00:00 2001
|
|
From: Daniel Golle <daniel@makrotopia.org>
|
|
Date: Wed, 13 Mar 2024 17:55:02 +0000
|
|
Subject: [PATCH] net: ethernet: mtk_eth_soc: fix PPE hanging issue
|
|
|
|
A patch to resolve an issue was found in MediaTek's GPL-licensed SDK:
|
|
In the mtk_ppe_stop() function, the PPE scan mode is not disabled before
|
|
disabling the PPE. This can potentially lead to a hang during the process
|
|
of disabling the PPE.
|
|
|
|
Without this patch, the PPE may experience a hang during the reboot test.
|
|
|
|
Reference: https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/b40da332dfe763932a82f9f62a4709457a15dd6c
|
|
|
|
Suggested-by: Bc-bocun Chen <bc-bocun.chen@mediatek.com>
|
|
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
|
|
---
|
|
drivers/net/ethernet/mediatek/mtk_ppe.c | 18 +++++++++++-------
|
|
1 file changed, 11 insertions(+), 7 deletions(-)
|
|
|
|
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
|
|
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
|
|
@@ -1002,7 +1002,7 @@ void mtk_ppe_start(struct mtk_ppe *ppe)
|
|
MTK_PPE_KEEPALIVE_DISABLE) |
|
|
FIELD_PREP(MTK_PPE_TB_CFG_HASH_MODE, 1) |
|
|
FIELD_PREP(MTK_PPE_TB_CFG_SCAN_MODE,
|
|
- MTK_PPE_SCAN_MODE_KEEPALIVE_AGE) |
|
|
+ MTK_PPE_SCAN_MODE_CHECK_AGE) |
|
|
FIELD_PREP(MTK_PPE_TB_CFG_ENTRY_NUM,
|
|
MTK_PPE_ENTRIES_SHIFT);
|
|
if (mtk_is_netsys_v2_or_greater(ppe->eth))
|
|
@@ -1098,17 +1098,21 @@ int mtk_ppe_stop(struct mtk_ppe *ppe)
|
|
|
|
mtk_ppe_cache_enable(ppe, false);
|
|
|
|
- /* disable offload engine */
|
|
- ppe_clear(ppe, MTK_PPE_GLO_CFG, MTK_PPE_GLO_CFG_EN);
|
|
- ppe_w32(ppe, MTK_PPE_FLOW_CFG, 0);
|
|
-
|
|
/* disable aging */
|
|
val = MTK_PPE_TB_CFG_AGE_NON_L4 |
|
|
MTK_PPE_TB_CFG_AGE_UNBIND |
|
|
MTK_PPE_TB_CFG_AGE_TCP |
|
|
MTK_PPE_TB_CFG_AGE_UDP |
|
|
- MTK_PPE_TB_CFG_AGE_TCP_FIN;
|
|
+ MTK_PPE_TB_CFG_AGE_TCP_FIN |
|
|
+ MTK_PPE_TB_CFG_SCAN_MODE;
|
|
ppe_clear(ppe, MTK_PPE_TB_CFG, val);
|
|
|
|
- return mtk_ppe_wait_busy(ppe);
|
|
+ if (mtk_ppe_wait_busy(ppe))
|
|
+ return -ETIMEDOUT;
|
|
+
|
|
+ /* disable offload engine */
|
|
+ ppe_clear(ppe, MTK_PPE_GLO_CFG, MTK_PPE_GLO_CFG_EN);
|
|
+ ppe_w32(ppe, MTK_PPE_FLOW_CFG, 0);
|
|
+
|
|
+ return 0;
|
|
}
|