netdev - [PATCH v2 net-next 08/15] net: ethernet: mtk_eth_soc: add rxd_size to mtk_soc

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Message-Id: <5a5ddce4bf8fb08dcbc730864c05a1aa58ec360f.1652716741.git.lorenzo@kernel.org>
Date:   Mon, 16 May 2022 18:06:35 +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, Sam.Shih@...iatek.com,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        robh@...nel.org, lorenzo.bianconi@...hat.com
Subject: [PATCH v2 net-next 08/15] net: ethernet: mtk_eth_soc: add rxd_size to mtk_soc_data

Similar to tx counterpart, introduce rxd_size in mtk_soc_data data
structure.
This is a preliminary patch to add mt7986 ethernet support.

Tested-by: Sam Shih <sam.shih@...iatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 13 +++++++++----
 drivers/net/ethernet/mediatek/mtk_eth_soc.h |  2 ++
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index a67b22dbaac7..bb628b65a9e5 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1719,7 +1719,7 @@ static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
 	}
 
 	ring->dma = dma_alloc_coherent(eth->dma_dev,
-				       rx_dma_size * sizeof(*ring->dma),
+				       rx_dma_size * eth->soc->txrx.rxd_size,
 				       &ring->phys, GFP_ATOMIC);
 	if (!ring->dma)
 		return -ENOMEM;
@@ -1777,9 +1777,8 @@ static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring)
 
 	if (ring->dma) {
 		dma_free_coherent(eth->dma_dev,
-				  ring->dma_size * sizeof(*ring->dma),
-				  ring->dma,
-				  ring->phys);
+				  ring->dma_size * eth->soc->txrx.rxd_size,
+				  ring->dma, ring->phys);
 		ring->dma = NULL;
 	}
 }
@@ -3370,6 +3369,7 @@ static const struct mtk_soc_data mt2701_data = {
 	.required_pctl = true,
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma),
+		.rxd_size = sizeof(struct mtk_rx_dma),
 	},
 };
 
@@ -3381,6 +3381,7 @@ static const struct mtk_soc_data mt7621_data = {
 	.offload_version = 2,
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma),
+		.rxd_size = sizeof(struct mtk_rx_dma),
 	},
 };
 
@@ -3393,6 +3394,7 @@ static const struct mtk_soc_data mt7622_data = {
 	.offload_version = 2,
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma),
+		.rxd_size = sizeof(struct mtk_rx_dma),
 	},
 };
 
@@ -3404,6 +3406,7 @@ static const struct mtk_soc_data mt7623_data = {
 	.offload_version = 2,
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma),
+		.rxd_size = sizeof(struct mtk_rx_dma),
 	},
 };
 
@@ -3415,6 +3418,7 @@ static const struct mtk_soc_data mt7629_data = {
 	.required_pctl = false,
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma),
+		.rxd_size = sizeof(struct mtk_rx_dma),
 	},
 };
 
@@ -3425,6 +3429,7 @@ static const struct mtk_soc_data rt5350_data = {
 	.required_pctl = false,
 	.txrx = {
 		.txd_size = sizeof(struct mtk_tx_dma),
+		.rxd_size = sizeof(struct mtk_rx_dma),
 	},
 };
 
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 495f623b62ef..150d692633fa 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -866,6 +866,7 @@ struct mtk_tx_dma_desc_info {
  * @required_pctl		A bool value to show whether the SoC requires
  *				the extra setup for those pins used by GMAC.
  * @txd_size			TX DMA descriptor size.
+ * @rxd_size			RX DMA descriptor size.
  */
 struct mtk_soc_data {
 	u32             ana_rgc3;
@@ -876,6 +877,7 @@ struct mtk_soc_data {
 	netdev_features_t hw_features;
 	struct {
 		u32	txd_size;
+		u32	rxd_size;
 	} txrx;
 };
 
-- 
2.35.3