diff options
Diffstat (limited to 'drivers/net/ucc_geth.c')
| -rw-r--r-- | drivers/net/ucc_geth.c | 187 |
1 files changed, 130 insertions, 57 deletions
diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c index 9dd16c9b1a1..e2f2e91cfdd 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> @@ -27,6 +27,7 @@ #include <linux/mii.h> #include <linux/phy.h> #include <linux/workqueue.h> +#include <linux/of_mdio.h> #include <linux/of_platform.h> #include <asm/uaccess.h> @@ -64,6 +65,8 @@ static DEFINE_SPINLOCK(ugeth_lock); +static void uec_configure_serdes(struct net_device *dev); + static struct { u32 msg_enable; } debug = { -1 }; @@ -1409,6 +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 @@ -1543,14 +1549,19 @@ static int init_phy(struct net_device *dev) priv->oldspeed = 0; priv->oldduplex = -1; - phydev = phy_connect(dev, ug_info->phy_bus_id, &adjust_link, 0, - priv->phy_interface); + if (!ug_info->phy_node) + return 0; - if (IS_ERR(phydev)) { + phydev = of_phy_connect(dev, ug_info->phy_node, &adjust_link, 0, + priv->phy_interface); + if (!phydev) { printk("%s: Could not attach to PHY\n", dev->name); - return PTR_ERR(phydev); + 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 | @@ -1566,7 +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) { @@ -3225,7 +3270,7 @@ static int ucc_geth_tx(struct net_device *dev, u8 txQ) dev->stats.tx_packets++; /* Free the sk buffer associated with this TxBD */ - dev_kfree_skb_irq(ugeth-> + dev_kfree_skb(ugeth-> tx_skbuff[txQ][ugeth->skb_dirtytx[txQ]]); ugeth->tx_skbuff[txQ][ugeth->skb_dirtytx[txQ]] = NULL; ugeth->skb_dirtytx[txQ] = @@ -3259,9 +3304,15 @@ static int ucc_geth_poll(struct napi_struct *napi, int budget) for (i = 0; i < ug_info->numQueuesRx; i++) howmany += ucc_geth_rx(ugeth, i, budget - howmany); + /* Tx event processing */ + spin_lock(&ugeth->lock); + for (i = 0; i < ug_info->numQueuesTx; i++) + ucc_geth_tx(ugeth->ndev, i); + spin_unlock(&ugeth->lock); + if (howmany < budget) { napi_complete(napi); - setbits32(ugeth->uccf->p_uccm, UCCE_RX_EVENTS); + setbits32(ugeth->uccf->p_uccm, UCCE_RX_EVENTS | UCCE_TX_EVENTS); } return howmany; @@ -3275,8 +3326,6 @@ static irqreturn_t ucc_geth_irq_handler(int irq, void *info) struct ucc_geth_info *ug_info; register u32 ucce; register u32 uccm; - register u32 tx_mask; - u8 i; ugeth_vdbg("%s: IN", __func__); @@ -3290,27 +3339,14 @@ static irqreturn_t ucc_geth_irq_handler(int irq, void *info) out_be32(uccf->p_ucce, ucce); /* check for receive events that require processing */ - if (ucce & UCCE_RX_EVENTS) { + if (ucce & (UCCE_RX_EVENTS | UCCE_TX_EVENTS)) { if (napi_schedule_prep(&ugeth->napi)) { - uccm &= ~UCCE_RX_EVENTS; + uccm &= ~(UCCE_RX_EVENTS | UCCE_TX_EVENTS); out_be32(uccf->p_uccm, uccm); __napi_schedule(&ugeth->napi); } } - /* Tx event processing */ - if (ucce & UCCE_TX_EVENTS) { - spin_lock(&ugeth->lock); - tx_mask = UCC_GETH_UCCE_TXB0; - for (i = 0; i < ug_info->numQueuesTx; i++) { - if (ucce & tx_mask) - ucc_geth_tx(dev, i); - ucce &= ~tx_mask; - tx_mask <<= 1; - } - spin_unlock(&ugeth->lock); - } - /* Errors and other events */ if (ucce & UCCE_OTHER) { if (ucce & UCC_GETH_UCCE_BSY) @@ -3339,6 +3375,37 @@ static void ucc_netpoll(struct net_device *dev) } #endif /* CONFIG_NET_POLL_CONTROLLER */ +static int ucc_geth_set_mac_addr(struct net_device *dev, void *p) +{ + struct ucc_geth_private *ugeth = netdev_priv(dev); + struct sockaddr *addr = p; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); + + /* + * If device is not running, we will set mac addr register + * when opening the device. + */ + if (!netif_running(dev)) + return 0; + + spin_lock_irq(&ugeth->lock); + init_mac_station_addr_regs(dev->dev_addr[0], + dev->dev_addr[1], + dev->dev_addr[2], + dev->dev_addr[3], + dev->dev_addr[4], + dev->dev_addr[5], + &ugeth->ug_regs->macstnaddr1, + &ugeth->ug_regs->macstnaddr2); + spin_unlock_irq(&ugeth->lock); + + return 0; +} + /* Called when something needs to use the ethernet device */ /* Returns 0 for success. */ static int ucc_geth_open(struct net_device *dev) @@ -3506,6 +3573,8 @@ 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; } @@ -3515,7 +3584,7 @@ static const struct net_device_ops ucc_geth_netdev_ops = { .ndo_stop = ucc_geth_close, .ndo_start_xmit = ucc_geth_start_xmit, .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, + .ndo_set_mac_address = ucc_geth_set_mac_addr, .ndo_change_mtu = eth_change_mtu, .ndo_set_multicast_list = ucc_geth_set_multi, .ndo_tx_timeout = ucc_geth_timeout, @@ -3528,14 +3597,12 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma { struct device *device = &ofdev->dev; struct device_node *np = ofdev->node; - struct device_node *mdio; struct net_device *dev = NULL; struct ucc_geth_private *ugeth = NULL; struct ucc_geth_info *ug_info; struct resource res; struct device_node *phy; int err, ucc_num, max_speed = 0; - const phandle *ph; const u32 *fixed_link; const unsigned int *prop; const char *sprop; @@ -3552,6 +3619,7 @@ 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__); @@ -3635,40 +3703,13 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma ug_info->uf_info.irq = irq_of_parse_and_map(np, 0); fixed_link = of_get_property(np, "fixed-link", NULL); if (fixed_link) { - snprintf(ug_info->phy_bus_id, sizeof(ug_info->phy_bus_id), - PHY_ID_FMT, "0", fixed_link[0]); phy = NULL; } else { - char bus_name[MII_BUS_ID_SIZE]; - - ph = of_get_property(np, "phy-handle", NULL); - phy = of_find_node_by_phandle(*ph); - + phy = of_parse_phandle(np, "phy-handle", 0); if (phy == NULL) return -ENODEV; - - /* set the PHY address */ - prop = of_get_property(phy, "reg", NULL); - if (prop == NULL) - return -1; - - /* Set the bus id */ - mdio = of_get_parent(phy); - - if (mdio == NULL) - return -ENODEV; - - err = of_address_to_resource(mdio, 0, &res); - - if (err) { - of_node_put(mdio); - return err; - } - fsl_pq_mdio_bus_name(bus_name, mdio); - of_node_put(mdio); - snprintf(ug_info->phy_bus_id, sizeof(ug_info->phy_bus_id), - "%s:%02x", bus_name, *prop); } + ug_info->phy_node = phy; /* get the phy interface type, or default to MII */ prop = of_get_property(np, "phy-connection-type", NULL); @@ -3694,6 +3735,7 @@ 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: @@ -3751,7 +3793,7 @@ static int ucc_geth_probe(struct of_device* ofdev, const struct of_device_id *ma dev->netdev_ops = &ucc_geth_netdev_ops; dev->watchdog_timeo = TX_TIMEOUT; INIT_WORK(&ugeth->timeout_work, ucc_geth_timeout_work); - netif_napi_add(dev, &ugeth->napi, ucc_geth_poll, UCC_GETH_DEV_WEIGHT); + netif_napi_add(dev, &ugeth->napi, ucc_geth_poll, 64); dev->mtu = 1500; ugeth->msg_enable = netif_msg_init(debug.msg_enable, UGETH_MSG_DEFAULT); @@ -3776,6 +3818,37 @@ 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; } |