linux-kernel - [PATCH v2] net: ethernet: mtk_ppe: Change PPE entries number to 16K

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Message-ID:
 <TY3P286MB2611AD036755E0BC411847FC98D52@TY3P286MB2611.JPNP286.PROD.OUTLOOK.COM>
Date: Tue, 25 Jun 2024 19:16:54 +0800
From: Shengyu Qu <wiagn233@...look.com>
To: nbd@....name,
	sean.wang@...iatek.com,
	Mark-MC.Lee@...iatek.com,
	lorenzo@...nel.org,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	pablo@...filter.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Cc: Shengyu Qu <wiagn233@...look.com>,
	stable@...r.kernel.org,
	Elad Yifee <eladwf@...il.com>
Subject: [PATCH v2] net: ethernet: mtk_ppe: Change PPE entries number to 16K

MT7981,7986 and 7988 all supports 32768 PPE entries, and MT7621/MT7620
supports 16384 PPE entries, but only set to 8192 entries in driver. So
incrase max entries to 16384 instead.

Cc: stable@...r.kernel.org
Signed-off-by: Elad Yifee <eladwf@...il.com>
Signed-off-by: Shengyu Qu <wiagn233@...look.com>
Fixes: ba37b7caf1ed ("net: ethernet: mtk_eth_soc: add support for initializing the PPE")
---
Changes since V1:
 - Reduced max entries from 32768 to 16384 to keep compatible with MT7620/21 devices.
 - Add fixes tag
---
 drivers/net/ethernet/mediatek/mtk_ppe.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.h b/drivers/net/ethernet/mediatek/mtk_ppe.h
index 691806bca372..223f709e2704 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.h
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.h
@@ -8,7 +8,7 @@
 #include <linux/bitfield.h>
 #include <linux/rhashtable.h>
 
-#define MTK_PPE_ENTRIES_SHIFT		3
+#define MTK_PPE_ENTRIES_SHIFT		4
 #define MTK_PPE_ENTRIES			(1024 << MTK_PPE_ENTRIES_SHIFT)
 #define MTK_PPE_HASH_MASK		(MTK_PPE_ENTRIES - 1)
 #define MTK_PPE_WAIT_TIMEOUT_US		1000000
-- 
2.39.2