diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/fec_main.c')
-rw-r--r-- | drivers/net/ethernet/freescale/fec_main.c | 62 |
1 files changed, 41 insertions, 21 deletions
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index b2793b91cc55..45b8b22b9987 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -98,10 +98,6 @@ static void set_multicast_list(struct net_device *ndev); * detected as not set during a prior frame transmission, then the * ENET_TDAR[TDAR] bit is cleared at a later time, even if additional TxBDs * were added to the ring and the ENET_TDAR[TDAR] bit is set. This results in - * If the ready bit in the transmit buffer descriptor (TxBD[R]) is previously - * detected as not set during a prior frame transmission, then the - * ENET_TDAR[TDAR] bit is cleared at a later time, even if additional TxBDs - * were added to the ring and the ENET_TDAR[TDAR] bit is set. This results in * frames not being transmitted until there is a 0-to-1 transition on * ENET_TDAR[TDAR]. */ @@ -385,8 +381,15 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) * data. */ bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, bufaddr, - FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE); - + skb->len, DMA_TO_DEVICE); + if (dma_mapping_error(&fep->pdev->dev, bdp->cbd_bufaddr)) { + bdp->cbd_bufaddr = 0; + fep->tx_skbuff[index] = NULL; + dev_kfree_skb_any(skb); + if (net_ratelimit()) + netdev_err(ndev, "Tx DMA memory map failed\n"); + return NETDEV_TX_OK; + } /* Send it on its way. Tell FEC it's ready, interrupt when done, * it's the last BD of the frame, and to put the CRC on the end. */ @@ -425,6 +428,8 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) /* If this was the last BD in the ring, start at the beginning again. */ bdp = fec_enet_get_nextdesc(bdp, fep); + skb_tx_timestamp(skb); + fep->cur_tx = bdp; if (fep->cur_tx == fep->dirty_tx) @@ -433,8 +438,6 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) /* Trigger transmission start */ writel(0, fep->hwp + FEC_X_DES_ACTIVE); - skb_tx_timestamp(skb); - return NETDEV_TX_OK; } @@ -772,11 +775,10 @@ fec_enet_tx(struct net_device *ndev) else index = bdp - fep->tx_bd_base; - dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr, - FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE); - bdp->cbd_bufaddr = 0; - skb = fep->tx_skbuff[index]; + dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr, skb->len, + DMA_TO_DEVICE); + bdp->cbd_bufaddr = 0; /* Check for errors. */ if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC | @@ -861,6 +863,7 @@ fec_enet_rx(struct net_device *ndev, int budget) struct bufdesc_ex *ebdp = NULL; bool vlan_packet_rcvd = false; u16 vlan_tag; + int index = 0; #ifdef CONFIG_M532x flush_cache_all(); @@ -916,10 +919,15 @@ fec_enet_rx(struct net_device *ndev, int budget) ndev->stats.rx_packets++; pkt_len = bdp->cbd_datlen; ndev->stats.rx_bytes += pkt_len; - data = (__u8*)__va(bdp->cbd_bufaddr); - dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr, - FEC_ENET_TX_FRSIZE, DMA_FROM_DEVICE); + if (fep->bufdesc_ex) + index = (struct bufdesc_ex *)bdp - + (struct bufdesc_ex *)fep->rx_bd_base; + else + index = bdp - fep->rx_bd_base; + data = fep->rx_skbuff[index]->data; + dma_sync_single_for_cpu(&fep->pdev->dev, bdp->cbd_bufaddr, + FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE); if (id_entry->driver_data & FEC_QUIRK_SWAP_FRAME) swap_buffer(data, pkt_len); @@ -999,8 +1007,8 @@ fec_enet_rx(struct net_device *ndev, int budget) napi_gro_receive(&fep->napi, skb); } - bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, data, - FEC_ENET_TX_FRSIZE, DMA_FROM_DEVICE); + dma_sync_single_for_device(&fep->pdev->dev, bdp->cbd_bufaddr, + FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE); rx_processing_done: /* Clear the status flags for this buffer */ status &= ~BD_ENET_RX_STATS; @@ -1719,6 +1727,12 @@ static int fec_enet_alloc_buffers(struct net_device *ndev) bdp->cbd_bufaddr = dma_map_single(&fep->pdev->dev, skb->data, FEC_ENET_RX_FRSIZE, DMA_FROM_DEVICE); + if (dma_mapping_error(&fep->pdev->dev, bdp->cbd_bufaddr)) { + fec_enet_free_buffers(ndev); + if (net_ratelimit()) + netdev_err(ndev, "Rx DMA memory map failed\n"); + return -ENOMEM; + } bdp->cbd_sc = BD_ENET_RX_EMPTY; if (fep->bufdesc_ex) { @@ -2035,6 +2049,8 @@ static void fec_reset_phy(struct platform_device *pdev) int err, phy_reset; int msec = 1; struct device_node *np = pdev->dev.of_node; + enum of_gpio_flags flags; + bool port; if (!np) return; @@ -2044,18 +2060,22 @@ static void fec_reset_phy(struct platform_device *pdev) if (msec > 1000) msec = 1; - phy_reset = of_get_named_gpio(np, "phy-reset-gpios", 0); + phy_reset = of_get_named_gpio_flags(np, "phy-reset-gpios", 0, &flags); if (!gpio_is_valid(phy_reset)) return; - err = devm_gpio_request_one(&pdev->dev, phy_reset, - GPIOF_OUT_INIT_LOW, "phy-reset"); + if (flags & OF_GPIO_ACTIVE_LOW) + port = GPIOF_OUT_INIT_LOW; + else + port = GPIOF_OUT_INIT_HIGH; + + err = devm_gpio_request_one(&pdev->dev, phy_reset, port, "phy-reset"); if (err) { dev_err(&pdev->dev, "failed to get phy-reset-gpios: %d\n", err); return; } msleep(msec); - gpio_set_value(phy_reset, 1); + gpio_set_value(phy_reset, !port); } #else /* CONFIG_OF */ static void fec_reset_phy(struct platform_device *pdev) |