diff options
Diffstat (limited to 'drivers/net/ucc_geth.c')
| -rw-r--r-- | drivers/net/ucc_geth.c | 79 |
1 files changed, 78 insertions, 1 deletions
diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c index 0cf22c4f123..fd6140bd9aa 100644 --- a/drivers/net/ucc_geth.c +++ b/drivers/net/ucc_geth.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2006-2007 Freescale Semicondutor, Inc. All rights reserved. + * Copyright (C) 2006-2009 Freescale Semicondutor, Inc. All rights reserved. * * Author: Shlomi Gridish <gridish@freescale.com> * Li Yang <leoli@freescale.com> @@ -65,6 +65,8 @@ static DEFINE_SPINLOCK(ugeth_lock); +static void uec_configure_serdes(struct net_device *dev); + static struct { u32 msg_enable; } debug = { -1 }; @@ -1410,6 +1412,9 @@ static int adjust_enet_interface(struct ucc_geth_private *ugeth) (ugeth->phy_interface == PHY_INTERFACE_MODE_RTBI)) { upsmr |= UCC_GETH_UPSMR_TBIM; } + if ((ugeth->phy_interface == PHY_INTERFACE_MODE_SGMII)) + upsmr |= UCC_GETH_UPSMR_SGMM; + out_be32(&uf_regs->upsmr, upsmr); /* Disable autonegotiation in tbi mode, because by default it @@ -1554,6 +1559,9 @@ static int init_phy(struct net_device *dev) return -ENODEV; } + if (priv->phy_interface == PHY_INTERFACE_MODE_SGMII) + uec_configure_serdes(dev); + phydev->supported &= (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | ADVERTISED_100baseT_Half | @@ -1569,7 +1577,41 @@ static int init_phy(struct net_device *dev) return 0; } +/* Initialize TBI PHY interface for communicating with the + * SERDES lynx PHY on the chip. We communicate with this PHY + * through the MDIO bus on each controller, treating it as a + * "normal" PHY at the address found in the UTBIPA register. We assume + * that the UTBIPA register is valid. Either the MDIO bus code will set + * it to a value that doesn't conflict with other PHYs on the bus, or the + * value doesn't matter, as there are no other PHYs on the bus. + */ +static void uec_configure_serdes(struct net_device *dev) +{ + struct ucc_geth_private *ugeth = netdev_priv(dev); + + if (!ugeth->tbiphy) { + printk(KERN_WARNING "SGMII mode requires that the device " + "tree specify a tbi-handle\n"); + return; + } + + /* + * If the link is already up, we must already be ok, and don't need to + * configure and reset the TBI<->SerDes link. Maybe U-Boot configured + * everything for us? Resetting it takes the link down and requires + * several seconds for it to come back. + */ + if (phy_read(ugeth->tbiphy, ENET_TBI_MII_SR) & TBISR_LSTATUS) + return; + + /* Single clk mode, mii mode off(for serdes communication) */ + phy_write(ugeth->tbiphy, ENET_TBI_MII_ANA, TBIANA_SETTINGS); + phy_write(ugeth->tbiphy, ENET_TBI_MII_TBICON, TBICON_CLK_SELECT); + + phy_write(ugeth->tbiphy, ENET_TBI_MII_CR, TBICR_SETTINGS); + +} static int ugeth_graceful_stop_tx(struct ucc_geth_private *ugeth) { @@ -3523,6 +3565,8 @@ static phy_interface_t to_phy_interface(const char *phy_connection_type) return PHY_INTERFACE_MODE_RGMII_RXID; if (strcasecmp(phy_connection_type, "rtbi") == 0) return PHY_INTERFACE_MODE_RTBI; + if (strcasecmp(phy_connection_type, "sgmii") == 0) + return PHY_INTERFACE_MODE_SGMII; return PHY_INTERFACE_MODE_MII; } @@ -3567,6 +3611,7 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma PHY_INTERFACE_MODE_RMII, PHY_INTERFACE_MODE_RGMII, PHY_INTERFACE_MODE_GMII, PHY_INTERFACE_MODE_RGMII, PHY_INTERFACE_MODE_TBI, PHY_INTERFACE_MODE_RTBI, + PHY_INTERFACE_MODE_SGMII, }; ugeth_vdbg("%s: IN", __func__); @@ -3682,6 +3727,7 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma case PHY_INTERFACE_MODE_RGMII_TXID: case PHY_INTERFACE_MODE_TBI: case PHY_INTERFACE_MODE_RTBI: + case PHY_INTERFACE_MODE_SGMII: max_speed = SPEED_1000; break; default: @@ -3756,6 +3802,37 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma ugeth->ndev = dev; ugeth->node = np; + /* Find the TBI PHY. If it's not there, we don't support SGMII */ + ph = of_get_property(np, "tbi-handle", NULL); + if (ph) { + struct device_node *tbi = of_find_node_by_phandle(*ph); + struct of_device *ofdev; + struct mii_bus *bus; + const unsigned int *id; + + if (!tbi) + return 0; + + mdio = of_get_parent(tbi); + if (!mdio) + return 0; + + ofdev = of_find_device_by_node(mdio); + + of_node_put(mdio); + + id = of_get_property(tbi, "reg", NULL); + if (!id) + return 0; + of_node_put(tbi); + + bus = dev_get_drvdata(&ofdev->dev); + if (!bus) + return 0; + + ugeth->tbiphy = bus->phy_map[*id]; + } + return 0; } |