Author: nbd Date: 2016-02-22 16:11:23 +0100 (Mon, 22 Feb 2016) New Revision: 48753
Modified: trunk/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c Log: ar71xx: reset ethernet tx ring on fast reset to prevent packet loss / irq issues Signed-off-by: Felix Fietkau <[email protected]> Modified: trunk/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c =================================================================== --- trunk/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c 2016-02-22 08:54:46 UTC (rev 48752) +++ trunk/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c 2016-02-22 15:11:23 UTC (rev 48753) @@ -513,14 +513,16 @@ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); struct net_device *dev = ag->dev; u32 reset_mask = pdata->reset_bit; - u32 rx_ds, tx_ds; + u32 rx_ds; u32 mii_reg; reset_mask &= AR71XX_RESET_GE0_MAC | AR71XX_RESET_GE1_MAC; + ag71xx_hw_stop(ag); + wmb(); + mii_reg = ag71xx_rr(ag, AG71XX_REG_MII_CFG); rx_ds = ag71xx_rr(ag, AG71XX_REG_RX_DESC); - tx_ds = ag71xx_rr(ag, AG71XX_REG_TX_DESC); ath79_device_reset_set(reset_mask); udelay(10); @@ -530,13 +532,16 @@ ag71xx_dma_reset(ag); ag71xx_hw_setup(ag); ag71xx_tx_packets(ag, true); + ag->tx_ring.curr = 0; + ag->tx_ring.dirty = 0; + netdev_reset_queue(ag->dev); /* setup max frame length */ ag71xx_wr(ag, AG71XX_REG_MAC_MFL, ag71xx_max_frame_len(ag->dev->mtu)); ag71xx_wr(ag, AG71XX_REG_RX_DESC, rx_ds); - ag71xx_wr(ag, AG71XX_REG_TX_DESC, tx_ds); + ag71xx_wr(ag, AG71XX_REG_TX_DESC, ag->tx_ring.descs_dma); ag71xx_wr(ag, AG71XX_REG_MII_CFG, mii_reg); ag71xx_hw_set_macaddr(ag, dev->dev_addr); @@ -962,6 +967,9 @@ break; } + if (flush) + desc->ctrl |= DESC_EMPTY; + n++; if (!skb) continue; _______________________________________________ openwrt-commits mailing list [email protected] https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-commits
