Subject: [RFC net-next v5 1/3] net: ethernet: mtk_eth_soc: Add register definitions for RSS and LRO

From: Frank Wunderlich <[email-masked]>
Date: Fri, 19 Dec 2025 16:12:10 +0100

From: Mason Chang <[email-masked]>

Add definitions for Receive Side Scaling and Large Receive Offload support.

Signed-off-by: Mason Chang <[email-masked]>
Signed-off-by: Frank Wunderlich <[email-masked]>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 23 +++++++++++++++
 drivers/net/ethernet/mediatek/mtk_eth_soc.h | 32 +++++++++++++++------
 2 files changed, 46 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index e68997a29191..243ff16fd15e 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -50,13 +50,18 @@ static const struct mtk_reg_map mtk_reg_map = {
 		.rx_ptr		= 0x0900,
 		.rx_cnt_cfg	= 0x0904,
 		.pcrx_ptr	= 0x0908,
+		.lro_ctrl_dw0   = 0x0980,
 		.glo_cfg	= 0x0a04,
 		.rst_idx	= 0x0a08,
 		.delay_irq	= 0x0a0c,
 		.irq_status	= 0x0a20,
 		.irq_mask	= 0x0a28,
 		.adma_rx_dbg0	= 0x0a38,
+		.lro_alt_score_delta	= 0x0a4c,
 		.int_grp	= 0x0a50,
+		.lro_rx1_dly_int	= 0x0a70,
+		.lro_ring_dip_dw0	= 0x0b04,
+		.lro_ring_ctrl_dw1	= 0x0b28,
 	},
 	.qdma = {
 		.qtx_cfg	= 0x1800,
@@ -113,6 +118,7 @@ static const struct mtk_reg_map mt7986_reg_map = {
 	.tx_irq_mask		= 0x461c,
 	.tx_irq_status		= 0x4618,
 	.pdma = {
+		.rss_glo_cfg    = 0x2800,
 		.rx_ptr		= 0x4100,
 		.rx_cnt_cfg	= 0x4104,
 		.pcrx_ptr	= 0x4108,
@@ -123,6 +129,12 @@ static const struct mtk_reg_map mt7986_reg_map = {
 		.irq_mask	= 0x4228,
 		.adma_rx_dbg0	= 0x4238,
 		.int_grp	= 0x4250,
+		.int_grp3	= 0x422c,
+		.lro_ctrl_dw0	= 0x4180,
+		.lro_alt_score_delta	= 0x424c,
+		.lro_rx1_dly_int	= 0x4270,
+		.lro_ring_dip_dw0	= 0x4304,
+		.lro_ring_ctrl_dw1	= 0x4328,
 	},
 	.qdma = {
 		.qtx_cfg	= 0x4400,
@@ -170,10 +182,21 @@ static const struct mtk_reg_map mt7988_reg_map = {
 		.glo_cfg	= 0x6a04,
 		.rst_idx	= 0x6a08,
 		.delay_irq	= 0x6a0c,
+		.rx_cfg		= 0x6a10,
 		.irq_status	= 0x6a20,
 		.irq_mask	= 0x6a28,
 		.adma_rx_dbg0	= 0x6a38,
 		.int_grp	= 0x6a50,
+		.int_grp3	= 0x6a58,
+		.tx_delay_irq	= 0x6ab0,
+		.rx_delay_irq	= 0x6ac0,
+		.lro_ctrl_dw0	= 0x6c08,
+		.lro_alt_score_delta	= 0x6c1c,
+		.lro_ring_dip_dw0	= 0x6c14,
+		.lro_ring_ctrl_dw1	= 0x6c38,
+		.lro_alt_dbg	= 0x6c40,
+		.lro_alt_dbg_data	= 0x6c44,
+		.rss_glo_cfg	= 0x7000,
 	},
 	.qdma = {
 		.qtx_cfg	= 0x4400,
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 0168e2fbc619..334625814b97 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -1143,16 +1143,30 @@ struct mtk_reg_map {
 	u32	tx_irq_mask;
 	u32	tx_irq_status;
 	struct {
-		u32	rx_ptr;		/* rx base pointer */
-		u32	rx_cnt_cfg;	/* rx max count configuration */
-		u32	pcrx_ptr;	/* rx cpu pointer */
-		u32	glo_cfg;	/* global configuration */
-		u32	rst_idx;	/* reset index */
-		u32	delay_irq;	/* delay interrupt */
-		u32	irq_status;	/* interrupt status */
-		u32	irq_mask;	/* interrupt mask */
+		u32	rx_ptr;			/* rx base pointer */
+		u32	rx_cnt_cfg;		/* rx max count configuration */
+		u32	pcrx_ptr;		/* rx cpu pointer */
+		u32	pdrx_ptr;		/* rx dma pointer */
+		u32	glo_cfg;		/* global configuration */
+		u32	rst_idx;		/* reset index */
+		u32	rx_cfg;			/* rx dma configuration */
+		u32	delay_irq;		/* delay interrupt */
+		u32	irq_status;		/* interrupt status */
+		u32	irq_mask;		/* interrupt mask */
 		u32	adma_rx_dbg0;
-		u32	int_grp;
+		u32	int_grp;		/* interrupt group1 */
+		u32	int_grp3;		/* interrupt group3 */
+		u32	tx_delay_irq;		/* tx delay interrupt */
+		u32	rx_delay_irq;		/* rx delay interrupt */
+		u32	lro_ctrl_dw0;		/* lro ctrl dword0 */
+		u32	lro_alt_score_delta;	/* lro auto-learn score delta */
+		u32	lro_rx1_dly_int;	/* lro rx ring1 delay interrupt */
+		u32	lro_ring_dip_dw0;	/* lro ring dip dword0 */
+		u32	lro_ring_ctrl_dw1;	/* lro ring ctrl dword1 */
+		u32	lro_alt_dbg;		/* lro auto-learn debug */
+		u32	lro_alt_dbg_data;	/* lro auto-learn debug data */
+		u32	rss_glo_cfg;		/* rss global configuration */
+
 	} pdma;
 	struct {
 		u32	qtx_cfg;	/* tx queue configuration */
-- 
2.43.0