diff options
Diffstat (limited to 'drivers/net/ethernet/mediatek/mtk_eth_soc.c')
| -rw-r--r-- | drivers/net/ethernet/mediatek/mtk_eth_soc.c | 43 |
1 files changed, 38 insertions, 5 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 6d2d60675ffd..01d3ee4b5829 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -353,7 +353,7 @@ static void mtk_mac_config(struct phylink_config *config, unsigned int mode, /* Setup gmac */ mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); mcr_new = mcr_cur; - mcr_new |= MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | + mcr_new |= MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | MAC_MCR_BACKOFF_EN | MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_LINK; /* Only update control register when needed! */ @@ -759,8 +759,8 @@ static void mtk_get_stats64(struct net_device *dev, static inline int mtk_max_frag_size(int mtu) { /* make sure buf_size will be at least MTK_MAX_RX_LENGTH */ - if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH) - mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; + if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH_2K) + mtu = MTK_MAX_RX_LENGTH_2K - MTK_RX_ETH_HLEN; return SKB_DATA_ALIGN(MTK_RX_HLEN + mtu) + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); @@ -771,7 +771,7 @@ static inline int mtk_max_buf_size(int frag_size) int buf_size = frag_size - NET_SKB_PAD - NET_IP_ALIGN - SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); - WARN_ON(buf_size < MTK_MAX_RX_LENGTH); + WARN_ON(buf_size < MTK_MAX_RX_LENGTH_2K); return buf_size; } @@ -2499,6 +2499,35 @@ static void mtk_uninit(struct net_device *dev) mtk_rx_irq_disable(eth, ~0); } +static int mtk_change_mtu(struct net_device *dev, int new_mtu) +{ + int length = new_mtu + MTK_RX_ETH_HLEN; + struct mtk_mac *mac = netdev_priv(dev); + struct mtk_eth *eth = mac->hw; + u32 mcr_cur, mcr_new; + + if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { + mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); + mcr_new = mcr_cur & ~MAC_MCR_MAX_RX_MASK; + + if (length <= 1518) + mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1518); + else if (length <= 1536) + mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1536); + else if (length <= 1552) + mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1552); + else + mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_2048); + + if (mcr_new != mcr_cur) + mtk_w32(mac->hw, mcr_new, MTK_MAC_MCR(mac->id)); + } + + dev->mtu = new_mtu; + + return 0; +} + static int mtk_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { struct mtk_mac *mac = netdev_priv(dev); @@ -2795,6 +2824,7 @@ static const struct net_device_ops mtk_netdev_ops = { .ndo_set_mac_address = mtk_set_mac_address, .ndo_validate_addr = eth_validate_addr, .ndo_do_ioctl = mtk_do_ioctl, + .ndo_change_mtu = mtk_change_mtu, .ndo_tx_timeout = mtk_tx_timeout, .ndo_get_stats64 = mtk_get_stats64, .ndo_fix_features = mtk_fix_features, @@ -2896,7 +2926,10 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) eth->netdev[id]->irq = eth->irq[0]; eth->netdev[id]->dev.of_node = np; - eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; + if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) + eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; + else + eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH_2K - MTK_RX_ETH_HLEN; return 0; |