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| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2022-05-20 20:11:34 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-05-22 22:24:33 +0100 |
| commit | 72e27d3718ba24e75bef7a17d1acd8fbfe37c623 (patch) | |
| tree | c82826a7b2cdaacb11c1da5d99dd3024c08a8341 /drivers/net/ethernet/mediatek/mtk_eth_soc.c | |
| parent | 649a752775c26bb9f9d163aa1102ab9cc5941496 (diff) | |
| download | linux-stable-72e27d3718ba24e75bef7a17d1acd8fbfe37c623.tar.gz linux-stable-72e27d3718ba24e75bef7a17d1acd8fbfe37c623.tar.bz2 linux-stable-72e27d3718ba24e75bef7a17d1acd8fbfe37c623.zip | |
net: ethernet: mtk_eth_soc: rely on rxd_size field in mtk_rx_alloc/mtk_rx_clean
Remove mtk_rx_dma structure layout dependency in mtk_rx_alloc/mtk_rx_clean.
Initialize to 0 rxd3 and rxd4 in mtk_rx_alloc.
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mediatek/mtk_eth_soc.c')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_eth_soc.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index c7820dbc75f1..4706e3708bbc 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1749,18 +1749,25 @@ static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag) return -ENOMEM; for (i = 0; i < rx_dma_size; i++) { + struct mtk_rx_dma *rxd; + dma_addr_t dma_addr = dma_map_single(eth->dma_dev, ring->data[i] + NET_SKB_PAD + eth->ip_align, ring->buf_size, DMA_FROM_DEVICE); if (unlikely(dma_mapping_error(eth->dma_dev, dma_addr))) return -ENOMEM; - ring->dma[i].rxd1 = (unsigned int)dma_addr; + + rxd = (void *)ring->dma + i * eth->soc->txrx.rxd_size; + rxd->rxd1 = (unsigned int)dma_addr; if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) - ring->dma[i].rxd2 = RX_DMA_LSO; + rxd->rxd2 = RX_DMA_LSO; else - ring->dma[i].rxd2 = RX_DMA_PLEN0(ring->buf_size); + rxd->rxd2 = RX_DMA_PLEN0(ring->buf_size); + + rxd->rxd3 = 0; + rxd->rxd4 = 0; } ring->dma_size = rx_dma_size; ring->calc_idx_update = false; @@ -1785,14 +1792,17 @@ static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring) if (ring->data && ring->dma) { for (i = 0; i < ring->dma_size; i++) { + struct mtk_rx_dma *rxd; + if (!ring->data[i]) continue; - if (!ring->dma[i].rxd1) + + rxd = (void *)ring->dma + i * eth->soc->txrx.rxd_size; + if (!rxd->rxd1) continue; - dma_unmap_single(eth->dma_dev, - ring->dma[i].rxd1, - ring->buf_size, - DMA_FROM_DEVICE); + + dma_unmap_single(eth->dma_dev, rxd->rxd1, + ring->buf_size, DMA_FROM_DEVICE); skb_free_frag(ring->data[i]); } kfree(ring->data); |