[PATCH v2 net-next 09/15] net: ethernet: mtk_eth_soc: rely on txd_size field in mtk_poll_tx/mtk_poll_rx

Lorenzo Bianconi
2022-05-16T16:08:43Z

This is a preliminary to ad 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 | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index bb628b65a9e5..d431311578e8 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1211,9 +1211,12 @@ static struct mtk_rx_ring *mtk_get_rx_ring(struct mtk_eth *eth)
return &eth->rx_ring[0];

for (i = 0; i < MTK_MAX_RX_RING_NUM; i++) {
+ struct mtk_rx_dma *rxd;
+
ring = &eth->rx_ring[i];
idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size);
- if (ring->dma[idx].rxd2 & RX_DMA_DONE) {
+ rxd = (void *)ring->dma + idx * eth->soc->txrx.rxd_size;
+ if (rxd->rxd2 & RX_DMA_DONE) {
ring->calc_idx_update = true;
return ring;
}
@@ -1264,7 +1267,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
goto rx_done;

idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size);
- rxd = &ring->dma[idx];
+ rxd = (void *)ring->dma + idx * eth->soc->txrx.rxd_size;
data = ring->data[idx];

if (!mtk_rx_get_desc(&trxd, rxd))
@@ -1453,7 +1456,7 @@ static int mtk_poll_tx_pdma(struct mtk_eth *eth, int budget,

mtk_tx_unmap(eth, tx_buf, true);

- desc = &ring->dma[cpu];
+ desc = (void *)ring->dma + cpu * eth->soc->txrx.txd_size;
ring->last_free = desc;
atomic_inc(&ring->free_count);

--
2.35.3