netdev - [PATCH net-next 03/12] net: ethernet: mtk_eth_soc: move gdma_to_ppe and ppe

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Date:   Thu,  8 Sep 2022 21:33:37 +0200
From:   Lorenzo Bianconi <lorenzo@...nel.org>
To:     netdev@...r.kernel.org
Cc:     nbd@....name, john@...ozen.org, sean.wang@...iatek.com,
        Mark-MC.Lee@...iatek.com, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, matthias.bgg@...il.com,
        linux-mediatek@...ts.infradead.org, lorenzo.bianconi@...hat.com,
        Bo.Jiao@...iatek.com, sujuan.chen@...iatek.com,
        ryder.Lee@...iatek.com, evelyn.tsai@...iatek.com,
        devicetree@...r.kernel.org, robh@...nel.org
Subject: [PATCH net-next 03/12] net: ethernet: mtk_eth_soc: move gdma_to_ppe and ppe_base definitions in mtk register map

This is a preliminary patch to introduce mt7986 hw packet engine.

Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 15 +++++++++++----
 drivers/net/ethernet/mediatek/mtk_eth_soc.h |  3 ++-
 drivers/net/ethernet/mediatek/mtk_ppe.h     |  2 --
 3 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index c19c67a480ae..b2b92fe2a96a 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -73,6 +73,8 @@ static const struct mtk_reg_map mtk_reg_map = {
 		.fq_blen	= 0x1b2c,
 	},
 	.gdm1_cnt		= 0x2400,
+	.gdma_to_ppe		= 0x4444,
+	.ppe_base		= 0x0c00,
 };
 
 static const struct mtk_reg_map mt7628_reg_map = {
@@ -126,6 +128,8 @@ static const struct mtk_reg_map mt7986_reg_map = {
 		.fq_blen	= 0x472c,
 	},
 	.gdm1_cnt		= 0x1c00,
+	.gdma_to_ppe		= 0x3333,
+	.ppe_base		= 0x2000,
 };
 
 /* strings used by ethtool */
@@ -2978,21 +2982,22 @@ static int mtk_open(struct net_device *dev)
 
 	/* we run 2 netdevs on the same dma ring so we only bring it up once */
 	if (!refcount_read(&eth->dma_refcnt)) {
+		const struct mtk_soc_data *soc = eth->soc;
 		u32 gdm_config = MTK_GDMA_TO_PDMA;
 
 		err = mtk_start_dma(eth);
 		if (err)
 			return err;
 
-		if (eth->soc->offload_version && mtk_ppe_start(eth->ppe) == 0)
-			gdm_config = MTK_GDMA_TO_PPE;
+		if (soc->offload_version && mtk_ppe_start(eth->ppe) == 0)
+			gdm_config = soc->reg_map->gdma_to_ppe;
 
 		mtk_gdm_config(eth, gdm_config);
 
 		napi_enable(&eth->tx_napi);
 		napi_enable(&eth->rx_napi);
 		mtk_tx_irq_enable(eth, MTK_TX_DONE_INT);
-		mtk_rx_irq_enable(eth, eth->soc->txrx.rx_irq_done_mask);
+		mtk_rx_irq_enable(eth, soc->txrx.rx_irq_done_mask);
 		refcount_set(&eth->dma_refcnt, 1);
 	}
 	else
@@ -4098,7 +4103,9 @@ static int mtk_probe(struct platform_device *pdev)
 	}
 
 	if (eth->soc->offload_version) {
-		eth->ppe = mtk_ppe_init(eth, eth->base + MTK_ETH_PPE_BASE, 2);
+		u32 ppe_addr = eth->soc->reg_map->ppe_base;
+
+		eth->ppe = mtk_ppe_init(eth, eth->base + ppe_addr, 2);
 		if (!eth->ppe) {
 			err = -ENOMEM;
 			goto err_free_dev;
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index ecf85e9ed824..2617cbecdfca 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -105,7 +105,6 @@
 #define MTK_GDMA_TCS_EN		BIT(21)
 #define MTK_GDMA_UCS_EN		BIT(20)
 #define MTK_GDMA_TO_PDMA	0x0
-#define MTK_GDMA_TO_PPE		0x4444
 #define MTK_GDMA_DROP_ALL       0x7777
 
 /* Unicast Filter MAC Address Register - Low */
@@ -955,6 +954,8 @@ struct mtk_reg_map {
 		u32	fq_blen;	/* fq free page buffer length */
 	} qdma;
 	u32	gdm1_cnt;
+	u32	gdma_to_ppe;
+	u32	ppe_base;
 };
 
 /* struct mtk_eth_data -	This is the structure holding all differences
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.h b/drivers/net/ethernet/mediatek/mtk_ppe.h
index 8f786c47b61a..bb079e3c0417 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.h
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.h
@@ -8,8 +8,6 @@
 #include <linux/bitfield.h>
 #include <linux/rhashtable.h>
 
-#define MTK_ETH_PPE_BASE		0xc00
-
 #define MTK_PPE_ENTRIES_SHIFT		3
 #define MTK_PPE_ENTRIES			(1024 << MTK_PPE_ENTRIES_SHIFT)
 #define MTK_PPE_HASH_MASK		(MTK_PPE_ENTRIES - 1)
-- 
2.37.3