[PATCH v2 net-next 07/15] net: ethernet: mtk_eth_soc: rely on txd_size in txd_to_idx

Lorenzo Bianconi
2022-05-16T16:08:35Z

This is a preliminary patch to add mt7986 ethernet support.

Tested-by: Sam Shih <sam.shih@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 5f0082f92cc7..a67b22dbaac7 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -852,9 +852,10 @@ static struct mtk_tx_dma *qdma_to_pdma(struct mtk_tx_ring *ring,
return ring->dma_pdma - ring->dma + dma;
}

-static int txd_to_idx(struct mtk_tx_ring *ring, struct mtk_tx_dma *dma)
+static int txd_to_idx(struct mtk_tx_ring *ring, struct mtk_tx_dma *dma,
+ u32 txd_size)
{
- return ((void *)dma - (void *)ring->dma) / sizeof(*dma);
+ return ((void *)dma - (void *)ring->dma) / txd_size;
}

static void mtk_tx_unmap(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf,
@@ -1070,8 +1071,10 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev,
!netdev_xmit_more())
mtk_w32(eth, txd->txd2, MTK_QTX_CTX_PTR);
} else {
- int next_idx = NEXT_DESP_IDX(txd_to_idx(ring, txd),
- ring->dma_size);
+ int next_idx;
+
+ next_idx = NEXT_DESP_IDX(txd_to_idx(ring, txd, soc->txrx.txd_size),
+ ring->dma_size);
mtk_w32(eth, next_idx, MT7628_TX_CTX_IDX0);
}

--
2.35.3