diff mbox series

[net-next,3/4] net: ethernet: mtk_eth_soc: add support for in-SoC SRAM

Message ID f24cefa3f0f1ead90ab8552099d6ceeeb12ba997.1692400170.git.daniel@makrotopia.org (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: ethernet: mtk_eth_soc: improve support for MT7988 | expand

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Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit fail Errors and warnings before: 1340 this patch: 1342
netdev/cc_maintainers success CCed 14 of 14 maintainers
netdev/build_clang success Errors and warnings before: 1353 this patch: 1353
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn fail Errors and warnings before: 1363 this patch: 1365
netdev/checkpatch warning WARNING: line length of 81 exceeds 80 columns WARNING: line length of 85 exceeds 80 columns WARNING: line length of 89 exceeds 80 columns WARNING: line length of 90 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Daniel Golle Aug. 18, 2023, 11:16 p.m. UTC 
MT7981, MT7986 and MT7988 come with in-SoC SRAM dedicated for Ethernet
DMA rings. Support using the SRAM without breaking existing device tree
bindings, ie. only new SoC starting from MT7988 will have the SRAM
declared as additional resource in device tree. For MT7981 and MT7986
an offset on top of the main I/O base is used.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 84 ++++++++++++++++-----
 drivers/net/ethernet/mediatek/mtk_eth_soc.h | 12 ++-
 2 files changed, 74 insertions(+), 22 deletions(-)

Comments

Lorenzo Bianconi Aug. 19, 2023, 7:48 a.m. UTC | #1 
> MT7981, MT7986 and MT7988 come with in-SoC SRAM dedicated for Ethernet
> DMA rings. Support using the SRAM without breaking existing device tree
> bindings, ie. only new SoC starting from MT7988 will have the SRAM
> declared as additional resource in device tree. For MT7981 and MT7986
> an offset on top of the main I/O base is used.
> 
> Signed-off-by: Daniel Golle <daniel@makrotopia.org>
> ---
>  drivers/net/ethernet/mediatek/mtk_eth_soc.c | 84 ++++++++++++++++-----
>  drivers/net/ethernet/mediatek/mtk_eth_soc.h | 12 ++-
>  2 files changed, 74 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> index 2482f47313085..eea3a7e578831 100644
> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> @@ -1135,10 +1135,13 @@ static int mtk_init_fq_dma(struct mtk_eth *eth)
>  	dma_addr_t dma_addr;
>  	int i;
>  
> -	eth->scratch_ring = dma_alloc_coherent(eth->dma_dev,
> -					       cnt * soc->txrx.txd_size,
> -					       &eth->phy_scratch_ring,
> -					       GFP_KERNEL);
> +	if (MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM))
> +		eth->scratch_ring = eth->sram_base;

Hi Daniel,

scratch_ring is now an __iomem pointer while before was just a void one. We
need to fix it.

Regards,
Lorenzo

> +	else
> +		eth->scratch_ring = dma_alloc_coherent(eth->dma_dev,
> +						       cnt * soc->txrx.txd_size,
> +						       &eth->phy_scratch_ring,
> +						       GFP_KERNEL);
>  	if (unlikely(!eth->scratch_ring))
>  		return -ENOMEM;
>  
> @@ -2446,8 +2449,14 @@ static int mtk_tx_alloc(struct mtk_eth *eth)
>  	if (!ring->buf)
>  		goto no_tx_mem;
>  
> -	ring->dma = dma_alloc_coherent(eth->dma_dev, ring_size * sz,
> -				       &ring->phys, GFP_KERNEL);
> +	if (MTK_HAS_CAPS(soc->caps, MTK_SRAM)) {
> +		ring->dma = eth->sram_base + ring_size * sz;
> +		ring->phys = eth->phy_scratch_ring + ring_size * (dma_addr_t)sz;
> +	} else {
> +		ring->dma = dma_alloc_coherent(eth->dma_dev, ring_size * sz,
> +					       &ring->phys, GFP_KERNEL);
> +	}
> +
>  	if (!ring->dma)
>  		goto no_tx_mem;
>  
> @@ -2546,8 +2555,7 @@ static void mtk_tx_clean(struct mtk_eth *eth)
>  		kfree(ring->buf);
>  		ring->buf = NULL;
>  	}
> -
> -	if (ring->dma) {
> +	if (!MTK_HAS_CAPS(soc->caps, MTK_SRAM) && ring->dma) {
>  		dma_free_coherent(eth->dma_dev,
>  				  ring->dma_size * soc->txrx.txd_size,
>  				  ring->dma, ring->phys);
> @@ -2566,9 +2574,14 @@ static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
>  {
>  	const struct mtk_reg_map *reg_map = eth->soc->reg_map;
>  	struct mtk_rx_ring *ring;
> -	int rx_data_len, rx_dma_size;
> +	int rx_data_len, rx_dma_size, tx_ring_size;
>  	int i;
>  
> +	if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA))
> +		tx_ring_size = MTK_QDMA_RING_SIZE;
> +	else
> +		tx_ring_size = MTK_DMA_SIZE;
> +
>  	if (rx_flag == MTK_RX_FLAGS_QDMA) {
>  		if (ring_no)
>  			return -EINVAL;
> @@ -2603,9 +2616,20 @@ static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
>  		ring->page_pool = pp;
>  	}
>  
> -	ring->dma = dma_alloc_coherent(eth->dma_dev,
> -				       rx_dma_size * eth->soc->txrx.rxd_size,
> -				       &ring->phys, GFP_KERNEL);
> +	if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM) ||
> +	    rx_flag != MTK_RX_FLAGS_NORMAL) {
> +		ring->dma = dma_alloc_coherent(eth->dma_dev,
> +					       rx_dma_size * eth->soc->txrx.rxd_size,
> +					       &ring->phys, GFP_KERNEL);
> +	} else {
> +		struct mtk_tx_ring *tx_ring = &eth->tx_ring;
> +
> +		ring->dma = tx_ring->dma + tx_ring_size *
> +			    eth->soc->txrx.txd_size * (ring_no + 1);
> +		ring->phys = tx_ring->phys + tx_ring_size *
> +			     eth->soc->txrx.txd_size * (ring_no + 1);
> +	}
> +
>  	if (!ring->dma)
>  		return -ENOMEM;
>  
> @@ -2690,7 +2714,7 @@ static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
>  	return 0;
>  }
>  
> -static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring)
> +static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring, bool in_sram)
>  {
>  	int i;
>  
> @@ -2713,7 +2737,7 @@ static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring)
>  		ring->data = NULL;
>  	}
>  
> -	if (ring->dma) {
> +	if (!in_sram && ring->dma) {
>  		dma_free_coherent(eth->dma_dev,
>  				  ring->dma_size * eth->soc->txrx.rxd_size,
>  				  ring->dma, ring->phys);
> @@ -3073,7 +3097,7 @@ static void mtk_dma_free(struct mtk_eth *eth)
>  	for (i = 0; i < MTK_MAX_DEVS; i++)
>  		if (eth->netdev[i])
>  			netdev_reset_queue(eth->netdev[i]);
> -	if (eth->scratch_ring) {
> +	if (!MTK_HAS_CAPS(soc->caps, MTK_SRAM) && eth->scratch_ring) {
>  		dma_free_coherent(eth->dma_dev,
>  				  MTK_QDMA_RING_SIZE * soc->txrx.txd_size,
>  				  eth->scratch_ring, eth->phy_scratch_ring);
> @@ -3081,13 +3105,13 @@ static void mtk_dma_free(struct mtk_eth *eth)
>  		eth->phy_scratch_ring = 0;
>  	}
>  	mtk_tx_clean(eth);
> -	mtk_rx_clean(eth, &eth->rx_ring[0]);
> -	mtk_rx_clean(eth, &eth->rx_ring_qdma);
> +	mtk_rx_clean(eth, &eth->rx_ring[0], MTK_HAS_CAPS(soc->caps, MTK_SRAM));
> +	mtk_rx_clean(eth, &eth->rx_ring_qdma, false);
>  
>  	if (eth->hwlro) {
>  		mtk_hwlro_rx_uninit(eth);
>  		for (i = 1; i < MTK_MAX_RX_RING_NUM; i++)
> -			mtk_rx_clean(eth, &eth->rx_ring[i]);
> +			mtk_rx_clean(eth, &eth->rx_ring[i], false);
>  	}
>  
>  	kfree(eth->scratch_head);
> @@ -4676,7 +4700,7 @@ static int mtk_sgmii_init(struct mtk_eth *eth)
>  
>  static int mtk_probe(struct platform_device *pdev)
>  {
> -	struct resource *res = NULL;
> +	struct resource *res = NULL, *res_sram;
>  	struct device_node *mac_np;
>  	struct mtk_eth *eth;
>  	int err, i;
> @@ -4696,6 +4720,16 @@ static int mtk_probe(struct platform_device *pdev)
>  	if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628))
>  		eth->ip_align = NET_IP_ALIGN;
>  
> +	if (MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM)) {
> +		if (mtk_is_netsys_v3_or_greater(eth)) {
> +			eth->sram_base = devm_platform_ioremap_resource(pdev, 1);
> +			if (IS_ERR(eth->sram_base))
> +				return PTR_ERR(eth->sram_base);
> +		} else {
> +			eth->sram_base = eth->base + MTK_ETH_SRAM_OFFSET;
> +		}
> +	}
> +
>  	spin_lock_init(&eth->page_lock);
>  	spin_lock_init(&eth->tx_irq_lock);
>  	spin_lock_init(&eth->rx_irq_lock);
> @@ -4759,6 +4793,18 @@ static int mtk_probe(struct platform_device *pdev)
>  			err = -EINVAL;
>  			goto err_destroy_sgmii;
>  		}
> +		if (MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM)) {
> +			if (mtk_is_netsys_v3_or_greater(eth)) {
> +				res_sram = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> +				if (!res_sram) {
> +					err = -EINVAL;
> +					goto err_destroy_sgmii;
> +				}
> +				eth->phy_scratch_ring = res_sram->start;
> +			} else {
> +				eth->phy_scratch_ring = res->start + MTK_ETH_SRAM_OFFSET;
> +			}
> +		}
>  	}
>  
>  	if (eth->soc->offload_version) {
> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
> index cf9381a3d68b7..0e513f41ad477 100644
> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
> @@ -139,6 +139,9 @@
>  #define MTK_GDMA_MAC_ADRH(x)	({ typeof(x) _x = (x); (_x == MTK_GMAC3_ID) ?	\
>  				   0x54C : 0x50C + (_x * 0x1000); })
>  
> +/* Internal SRAM offset */
> +#define MTK_ETH_SRAM_OFFSET	0x40000
> +
>  /* FE global misc reg*/
>  #define MTK_FE_GLO_MISC         0x124
>  
> @@ -938,6 +941,7 @@ enum mkt_eth_capabilities {
>  	MTK_RSTCTRL_PPE1_BIT,
>  	MTK_RSTCTRL_PPE2_BIT,
>  	MTK_U3_COPHY_V2_BIT,
> +	MTK_SRAM_BIT,
>  
>  	/* MUX BITS*/
>  	MTK_ETH_MUX_GDM1_TO_GMAC1_ESW_BIT,
> @@ -973,6 +977,7 @@ enum mkt_eth_capabilities {
>  #define MTK_RSTCTRL_PPE1	BIT_ULL(MTK_RSTCTRL_PPE1_BIT)
>  #define MTK_RSTCTRL_PPE2	BIT_ULL(MTK_RSTCTRL_PPE2_BIT)
>  #define MTK_U3_COPHY_V2		BIT_ULL(MTK_U3_COPHY_V2_BIT)
> +#define MTK_SRAM		BIT_ULL(MTK_SRAM_BIT)
>  
>  #define MTK_ETH_MUX_GDM1_TO_GMAC1_ESW		\
>  	BIT_ULL(MTK_ETH_MUX_GDM1_TO_GMAC1_ESW_BIT)
> @@ -1048,14 +1053,14 @@ enum mkt_eth_capabilities {
>  #define MT7981_CAPS  (MTK_GMAC1_SGMII | MTK_GMAC2_SGMII | MTK_GMAC2_GEPHY | \
>  		      MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA | \
>  		      MTK_MUX_U3_GMAC2_TO_QPHY | MTK_U3_COPHY_V2 | \
> -		      MTK_RSTCTRL_PPE1)
> +		      MTK_RSTCTRL_PPE1 | MTK_SRAM)
>  
>  #define MT7986_CAPS  (MTK_GMAC1_SGMII | MTK_GMAC2_SGMII | \
>  		      MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA | \
> -		      MTK_RSTCTRL_PPE1)
> +		      MTK_RSTCTRL_PPE1 | MTK_SRAM)
>  
>  #define MT7988_CAPS  (MTK_GDM1_ESW | MTK_QDMA | MTK_RSTCTRL_PPE1 | \
> -		      MTK_RSTCTRL_PPE2)
> +		      MTK_RSTCTRL_PPE2 | MTK_SRAM)
>  
>  struct mtk_tx_dma_desc_info {
>  	dma_addr_t	addr;
> @@ -1215,6 +1220,7 @@ struct mtk_eth {
>  	struct device			*dev;
>  	struct device			*dma_dev;
>  	void __iomem			*base;
> +	void __iomem			*sram_base;
>  	spinlock_t			page_lock;
>  	spinlock_t			tx_irq_lock;
>  	spinlock_t			rx_irq_lock;
> -- 
> 2.41.0
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 2482f47313085..eea3a7e578831 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1135,10 +1135,13 @@  static int mtk_init_fq_dma(struct mtk_eth *eth)
 	dma_addr_t dma_addr;
 	int i;
 
-	eth->scratch_ring = dma_alloc_coherent(eth->dma_dev,
-					       cnt * soc->txrx.txd_size,
-					       &eth->phy_scratch_ring,
-					       GFP_KERNEL);
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM))
+		eth->scratch_ring = eth->sram_base;
+	else
+		eth->scratch_ring = dma_alloc_coherent(eth->dma_dev,
+						       cnt * soc->txrx.txd_size,
+						       &eth->phy_scratch_ring,
+						       GFP_KERNEL);
 	if (unlikely(!eth->scratch_ring))
 		return -ENOMEM;
 
@@ -2446,8 +2449,14 @@  static int mtk_tx_alloc(struct mtk_eth *eth)
 	if (!ring->buf)
 		goto no_tx_mem;
 
-	ring->dma = dma_alloc_coherent(eth->dma_dev, ring_size * sz,
-				       &ring->phys, GFP_KERNEL);
+	if (MTK_HAS_CAPS(soc->caps, MTK_SRAM)) {
+		ring->dma = eth->sram_base + ring_size * sz;
+		ring->phys = eth->phy_scratch_ring + ring_size * (dma_addr_t)sz;
+	} else {
+		ring->dma = dma_alloc_coherent(eth->dma_dev, ring_size * sz,
+					       &ring->phys, GFP_KERNEL);
+	}
+
 	if (!ring->dma)
 		goto no_tx_mem;
 
@@ -2546,8 +2555,7 @@  static void mtk_tx_clean(struct mtk_eth *eth)
 		kfree(ring->buf);
 		ring->buf = NULL;
 	}
-
-	if (ring->dma) {
+	if (!MTK_HAS_CAPS(soc->caps, MTK_SRAM) && ring->dma) {
 		dma_free_coherent(eth->dma_dev,
 				  ring->dma_size * soc->txrx.txd_size,
 				  ring->dma, ring->phys);
@@ -2566,9 +2574,14 @@  static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
 {
 	const struct mtk_reg_map *reg_map = eth->soc->reg_map;
 	struct mtk_rx_ring *ring;
-	int rx_data_len, rx_dma_size;
+	int rx_data_len, rx_dma_size, tx_ring_size;
 	int i;
 
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA))
+		tx_ring_size = MTK_QDMA_RING_SIZE;
+	else
+		tx_ring_size = MTK_DMA_SIZE;
+
 	if (rx_flag == MTK_RX_FLAGS_QDMA) {
 		if (ring_no)
 			return -EINVAL;
@@ -2603,9 +2616,20 @@  static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
 		ring->page_pool = pp;
 	}
 
-	ring->dma = dma_alloc_coherent(eth->dma_dev,
-				       rx_dma_size * eth->soc->txrx.rxd_size,
-				       &ring->phys, GFP_KERNEL);
+	if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM) ||
+	    rx_flag != MTK_RX_FLAGS_NORMAL) {
+		ring->dma = dma_alloc_coherent(eth->dma_dev,
+					       rx_dma_size * eth->soc->txrx.rxd_size,
+					       &ring->phys, GFP_KERNEL);
+	} else {
+		struct mtk_tx_ring *tx_ring = &eth->tx_ring;
+
+		ring->dma = tx_ring->dma + tx_ring_size *
+			    eth->soc->txrx.txd_size * (ring_no + 1);
+		ring->phys = tx_ring->phys + tx_ring_size *
+			     eth->soc->txrx.txd_size * (ring_no + 1);
+	}
+
 	if (!ring->dma)
 		return -ENOMEM;
 
@@ -2690,7 +2714,7 @@  static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
 	return 0;
 }
 
-static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring)
+static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring, bool in_sram)
 {
 	int i;
 
@@ -2713,7 +2737,7 @@  static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring)
 		ring->data = NULL;
 	}
 
-	if (ring->dma) {
+	if (!in_sram && ring->dma) {
 		dma_free_coherent(eth->dma_dev,
 				  ring->dma_size * eth->soc->txrx.rxd_size,
 				  ring->dma, ring->phys);
@@ -3073,7 +3097,7 @@  static void mtk_dma_free(struct mtk_eth *eth)
 	for (i = 0; i < MTK_MAX_DEVS; i++)
 		if (eth->netdev[i])
 			netdev_reset_queue(eth->netdev[i]);
-	if (eth->scratch_ring) {
+	if (!MTK_HAS_CAPS(soc->caps, MTK_SRAM) && eth->scratch_ring) {
 		dma_free_coherent(eth->dma_dev,
 				  MTK_QDMA_RING_SIZE * soc->txrx.txd_size,
 				  eth->scratch_ring, eth->phy_scratch_ring);
@@ -3081,13 +3105,13 @@  static void mtk_dma_free(struct mtk_eth *eth)
 		eth->phy_scratch_ring = 0;
 	}
 	mtk_tx_clean(eth);
-	mtk_rx_clean(eth, &eth->rx_ring[0]);
-	mtk_rx_clean(eth, &eth->rx_ring_qdma);
+	mtk_rx_clean(eth, &eth->rx_ring[0], MTK_HAS_CAPS(soc->caps, MTK_SRAM));
+	mtk_rx_clean(eth, &eth->rx_ring_qdma, false);
 
 	if (eth->hwlro) {
 		mtk_hwlro_rx_uninit(eth);
 		for (i = 1; i < MTK_MAX_RX_RING_NUM; i++)
-			mtk_rx_clean(eth, &eth->rx_ring[i]);
+			mtk_rx_clean(eth, &eth->rx_ring[i], false);
 	}
 
 	kfree(eth->scratch_head);
@@ -4676,7 +4700,7 @@  static int mtk_sgmii_init(struct mtk_eth *eth)
 
 static int mtk_probe(struct platform_device *pdev)
 {
-	struct resource *res = NULL;
+	struct resource *res = NULL, *res_sram;
 	struct device_node *mac_np;
 	struct mtk_eth *eth;
 	int err, i;
@@ -4696,6 +4720,16 @@  static int mtk_probe(struct platform_device *pdev)
 	if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628))
 		eth->ip_align = NET_IP_ALIGN;
 
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM)) {
+		if (mtk_is_netsys_v3_or_greater(eth)) {
+			eth->sram_base = devm_platform_ioremap_resource(pdev, 1);
+			if (IS_ERR(eth->sram_base))
+				return PTR_ERR(eth->sram_base);
+		} else {
+			eth->sram_base = eth->base + MTK_ETH_SRAM_OFFSET;
+		}
+	}
+
 	spin_lock_init(&eth->page_lock);
 	spin_lock_init(&eth->tx_irq_lock);
 	spin_lock_init(&eth->rx_irq_lock);
@@ -4759,6 +4793,18 @@  static int mtk_probe(struct platform_device *pdev)
 			err = -EINVAL;
 			goto err_destroy_sgmii;
 		}
+		if (MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM)) {
+			if (mtk_is_netsys_v3_or_greater(eth)) {
+				res_sram = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+				if (!res_sram) {
+					err = -EINVAL;
+					goto err_destroy_sgmii;
+				}
+				eth->phy_scratch_ring = res_sram->start;
+			} else {
+				eth->phy_scratch_ring = res->start + MTK_ETH_SRAM_OFFSET;
+			}
+		}
 	}
 
 	if (eth->soc->offload_version) {
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index cf9381a3d68b7..0e513f41ad477 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -139,6 +139,9 @@ 
 #define MTK_GDMA_MAC_ADRH(x)	({ typeof(x) _x = (x); (_x == MTK_GMAC3_ID) ?	\
 				   0x54C : 0x50C + (_x * 0x1000); })
 
+/* Internal SRAM offset */
+#define MTK_ETH_SRAM_OFFSET	0x40000
+
 /* FE global misc reg*/
 #define MTK_FE_GLO_MISC         0x124
 
@@ -938,6 +941,7 @@  enum mkt_eth_capabilities {
 	MTK_RSTCTRL_PPE1_BIT,
 	MTK_RSTCTRL_PPE2_BIT,
 	MTK_U3_COPHY_V2_BIT,
+	MTK_SRAM_BIT,
 
 	/* MUX BITS*/
 	MTK_ETH_MUX_GDM1_TO_GMAC1_ESW_BIT,
@@ -973,6 +977,7 @@  enum mkt_eth_capabilities {
 #define MTK_RSTCTRL_PPE1	BIT_ULL(MTK_RSTCTRL_PPE1_BIT)
 #define MTK_RSTCTRL_PPE2	BIT_ULL(MTK_RSTCTRL_PPE2_BIT)
 #define MTK_U3_COPHY_V2		BIT_ULL(MTK_U3_COPHY_V2_BIT)
+#define MTK_SRAM		BIT_ULL(MTK_SRAM_BIT)
 
 #define MTK_ETH_MUX_GDM1_TO_GMAC1_ESW		\
 	BIT_ULL(MTK_ETH_MUX_GDM1_TO_GMAC1_ESW_BIT)
@@ -1048,14 +1053,14 @@  enum mkt_eth_capabilities {
 #define MT7981_CAPS  (MTK_GMAC1_SGMII | MTK_GMAC2_SGMII | MTK_GMAC2_GEPHY | \
 		      MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA | \
 		      MTK_MUX_U3_GMAC2_TO_QPHY | MTK_U3_COPHY_V2 | \
-		      MTK_RSTCTRL_PPE1)
+		      MTK_RSTCTRL_PPE1 | MTK_SRAM)
 
 #define MT7986_CAPS  (MTK_GMAC1_SGMII | MTK_GMAC2_SGMII | \
 		      MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA | \
-		      MTK_RSTCTRL_PPE1)
+		      MTK_RSTCTRL_PPE1 | MTK_SRAM)
 
 #define MT7988_CAPS  (MTK_GDM1_ESW | MTK_QDMA | MTK_RSTCTRL_PPE1 | \
-		      MTK_RSTCTRL_PPE2)
+		      MTK_RSTCTRL_PPE2 | MTK_SRAM)
 
 struct mtk_tx_dma_desc_info {
 	dma_addr_t	addr;
@@ -1215,6 +1220,7 @@  struct mtk_eth {
 	struct device			*dev;
 	struct device			*dma_dev;
 	void __iomem			*base;
+	void __iomem			*sram_base;
 	spinlock_t			page_lock;
 	spinlock_t			tx_irq_lock;
 	spinlock_t			rx_irq_lock;