[PATCH net-next v4 3/3] net: stmmac: xgmac: decouple the MAC Rx/Tx enables from the DMA ops
Abid Ali <[email protected]>
| Newsgroups | org.kernel.vger.netdev,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
The XGMAC per-channel DMA start and stop ops also raise and lower MAC_Tx_Configuration.TE and MAC_Rx_Configuration.RE. Those bits are global, not per channel, so an op meant to touch one channel reconfigures the whole MAC. stmmac_tx_err() restarting a single Tx channel clears TE and stops transmit on every other channel too. Signed-off-by: Abid Ali <[email protected]> --- drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c index df366b2e6bd7..ba4f535fb9eb 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c @@ -268,10 +268,6 @@ static void dwxgmac2_dma_start_tx(struct stmmac_priv *priv, value = readl(ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan)); value |= XGMAC_TXST; writel(value, ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan)); - - value = readl(ioaddr + XGMAC_TX_CONFIG); - value |= XGMAC_CONFIG_TE; - writel(value, ioaddr + XGMAC_TX_CONFIG); } static void dwxgmac2_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr, @@ -282,10 +278,6 @@ static void dwxgmac2_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr, value = readl(ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan)); value &= ~XGMAC_TXST; writel(value, ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan)); - - value = readl(ioaddr + XGMAC_TX_CONFIG); - value &= ~XGMAC_CONFIG_TE; - writel(value, ioaddr + XGMAC_TX_CONFIG); } static void dwxgmac2_dma_start_rx(struct stmmac_priv *priv, @@ -299,10 +291,6 @@ static void dwxgmac2_dma_start_rx(struct stmmac_priv *priv, value = readl(ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan)); value |= XGMAC_RXST; writel(value, ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan)); - - value = readl(ioaddr + XGMAC_RX_CONFIG); - value |= XGMAC_CONFIG_RE; - writel(value, ioaddr + XGMAC_RX_CONFIG); } static void dwxgmac2_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr, -- 2.43.0