diff options
| -rw-r--r-- | drivers/net/tg3.c | 69 |
1 files changed, 67 insertions, 2 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index ec1953043102..d5a1f9e3794c 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -3373,8 +3373,8 @@ relink: tg3_phy_copper_begin(tp); tg3_readphy(tp, MII_BMSR, &bmsr); - if (!tg3_readphy(tp, MII_BMSR, &bmsr) && - (bmsr & BMSR_LSTATUS)) + if ((!tg3_readphy(tp, MII_BMSR, &bmsr) && (bmsr & BMSR_LSTATUS)) || + (tp->mac_mode & MAC_MODE_PORT_INT_LPBACK)) current_link_up = 1; } @@ -6309,6 +6309,42 @@ dma_error: return NETDEV_TX_OK; } +static void tg3_set_loopback(struct net_device *dev, u32 features) +{ + struct tg3 *tp = netdev_priv(dev); + + if (features & NETIF_F_LOOPBACK) { + if (tp->mac_mode & MAC_MODE_PORT_INT_LPBACK) + return; + + /* + * Clear MAC_MODE_HALF_DUPLEX or you won't get packets back in + * loopback mode if Half-Duplex mode was negotiated earlier. + */ + tp->mac_mode &= ~MAC_MODE_HALF_DUPLEX; + + /* Enable internal MAC loopback mode */ + tp->mac_mode |= MAC_MODE_PORT_INT_LPBACK; + spin_lock_bh(&tp->lock); + tw32(MAC_MODE, tp->mac_mode); + netif_carrier_on(tp->dev); + spin_unlock_bh(&tp->lock); + netdev_info(dev, "Internal MAC loopback mode enabled.\n"); + } else { + if (!(tp->mac_mode & MAC_MODE_PORT_INT_LPBACK)) + return; + + /* Disable internal MAC loopback mode */ + tp->mac_mode &= ~MAC_MODE_PORT_INT_LPBACK; + spin_lock_bh(&tp->lock); + tw32(MAC_MODE, tp->mac_mode); + /* Force link status check */ + tg3_setup_phy(tp, 1); + spin_unlock_bh(&tp->lock); + netdev_info(dev, "Internal MAC loopback mode disabled.\n"); + } +} + static u32 tg3_fix_features(struct net_device *dev, u32 features) { struct tg3 *tp = netdev_priv(dev); @@ -6319,6 +6355,16 @@ static u32 tg3_fix_features(struct net_device *dev, u32 features) return features; } +static int tg3_set_features(struct net_device *dev, u32 features) +{ + u32 changed = dev->features ^ features; + + if ((changed & NETIF_F_LOOPBACK) && netif_running(dev)) + tg3_set_loopback(dev, features); + + return 0; +} + static inline void tg3_set_mtu(struct net_device *dev, struct tg3 *tp, int new_mtu) { @@ -9485,6 +9531,13 @@ static int tg3_open(struct net_device *dev) netif_tx_start_all_queues(dev); + /* + * Reset loopback feature if it was turned on while the device was down + * make sure that it's installed properly now. + */ + if (dev->features & NETIF_F_LOOPBACK) + tg3_set_loopback(dev, dev->features); + return 0; err_out3: @@ -15033,6 +15086,7 @@ static const struct net_device_ops tg3_netdev_ops = { .ndo_tx_timeout = tg3_tx_timeout, .ndo_change_mtu = tg3_change_mtu, .ndo_fix_features = tg3_fix_features, + .ndo_set_features = tg3_set_features, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = tg3_poll_controller, #endif @@ -15049,6 +15103,7 @@ static const struct net_device_ops tg3_netdev_ops_dma_bug = { .ndo_do_ioctl = tg3_ioctl, .ndo_tx_timeout = tg3_tx_timeout, .ndo_change_mtu = tg3_change_mtu, + .ndo_set_features = tg3_set_features, #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = tg3_poll_controller, #endif @@ -15246,6 +15301,16 @@ static int __devinit tg3_init_one(struct pci_dev *pdev, dev->features |= hw_features; dev->vlan_features |= hw_features; + /* + * Add loopback capability only for a subset of devices that support + * MAC-LOOPBACK. Eventually this need to be enhanced to allow INT-PHY + * loopback for the remaining devices. + */ + if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5780 && + !tg3_flag(tp, CPMU_PRESENT)) + /* Add the loopback capability */ + dev->hw_features |= NETIF_F_LOOPBACK; + if (tp->pci_chip_rev_id == CHIPREV_ID_5705_A1 && !tg3_flag(tp, TSO_CAPABLE) && !(tr32(TG3PCI_PCISTATE) & PCISTATE_BUS_SPEED_HIGH)) { |
