diff options
| -rw-r--r-- | drivers/net/ethernet/broadcom/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/b44.c | 190 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/b44.h | 3 |
3 files changed, 189 insertions, 5 deletions
diff --git a/drivers/net/ethernet/broadcom/Kconfig b/drivers/net/ethernet/broadcom/Kconfig index 2fa5b86f139d..3f97d9fd0a71 100644 --- a/drivers/net/ethernet/broadcom/Kconfig +++ b/drivers/net/ethernet/broadcom/Kconfig @@ -23,6 +23,7 @@ config B44 depends on SSB_POSSIBLE && HAS_DMA select SSB select MII + select PHYLIB ---help--- If you have a network (Ethernet) controller of this type, say Y or M and read the Ethernet-HOWTO, available from diff --git a/drivers/net/ethernet/broadcom/b44.c b/drivers/net/ethernet/broadcom/b44.c index 40a9de2e223b..7b1e71d6596a 100644 --- a/drivers/net/ethernet/broadcom/b44.c +++ b/drivers/net/ethernet/broadcom/b44.c @@ -6,6 +6,7 @@ * Copyright (C) 2006 Felix Fietkau (nbd@openwrt.org) * Copyright (C) 2006 Broadcom Corporation. * Copyright (C) 2007 Michael Buesch <m@bues.ch> + * Copyright (C) 2013 Hauke Mehrtens <hauke@hauke-m.de> * * Distribute under GPL. */ @@ -29,6 +30,7 @@ #include <linux/dma-mapping.h> #include <linux/ssb/ssb.h> #include <linux/slab.h> +#include <linux/phy.h> #include <asm/uaccess.h> #include <asm/io.h> @@ -316,6 +318,23 @@ static void b44_mdio_write_mii(struct net_device *dev, int phy_id, int location, __b44_writephy(bp, phy_id, location, val); } +static int b44_mdio_read_phylib(struct mii_bus *bus, int phy_id, int location) +{ + u32 val; + struct b44 *bp = bus->priv; + int rc = __b44_readphy(bp, phy_id, location, &val); + if (rc) + return 0xffffffff; + return val; +} + +static int b44_mdio_write_phylib(struct mii_bus *bus, int phy_id, int location, + u16 val) +{ + struct b44 *bp = bus->priv; + return __b44_writephy(bp, phy_id, location, val); +} + static int b44_phy_reset(struct b44 *bp) { u32 val; @@ -523,10 +542,12 @@ static void b44_check_phy(struct b44 *bp) if (bp->flags & B44_FLAG_EXTERNAL_PHY) { bp->flags |= B44_FLAG_100_BASE_T; - bp->flags |= B44_FLAG_FULL_DUPLEX; if (!netif_carrier_ok(bp->dev)) { u32 val = br32(bp, B44_TX_CTRL); - val |= TX_CTRL_DUPLEX; + if (bp->flags & B44_FLAG_FULL_DUPLEX) + val |= TX_CTRL_DUPLEX; + else + val &= ~TX_CTRL_DUPLEX; bw32(bp, B44_TX_CTRL, val); netif_carrier_on(bp->dev); b44_link_report(bp); @@ -1805,6 +1826,11 @@ static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct b44 *bp = netdev_priv(dev); + if (bp->flags & B44_FLAG_EXTERNAL_PHY) { + BUG_ON(!bp->phydev); + return phy_ethtool_gset(bp->phydev, cmd); + } + cmd->supported = (SUPPORTED_Autoneg); cmd->supported |= (SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | @@ -1846,7 +1872,23 @@ static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct b44 *bp = netdev_priv(dev); - u32 speed = ethtool_cmd_speed(cmd); + u32 speed; + int ret; + + if (bp->flags & B44_FLAG_EXTERNAL_PHY) { + BUG_ON(!bp->phydev); + spin_lock_irq(&bp->lock); + if (netif_running(dev)) + b44_setup_phy(bp); + + ret = phy_ethtool_sset(bp->phydev, cmd); + + spin_unlock_irq(&bp->lock); + + return ret; + } + + speed = ethtool_cmd_speed(cmd); /* We do not support gigabit. */ if (cmd->autoneg == AUTONEG_ENABLE) { @@ -2076,7 +2118,6 @@ static const struct ethtool_ops b44_ethtool_ops = { static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { - struct mii_ioctl_data *data = if_mii(ifr); struct b44 *bp = netdev_priv(dev); int err = -EINVAL; @@ -2084,7 +2125,12 @@ static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) goto out; spin_lock_irq(&bp->lock); - err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL); + if (bp->flags & B44_FLAG_EXTERNAL_PHY) { + BUG_ON(!bp->phydev); + err = phy_mii_ioctl(bp->phydev, ifr, cmd); + } else { + err = generic_mii_ioctl(&bp->mii_if, if_mii(ifr), cmd, NULL); + } spin_unlock_irq(&bp->lock); out: return err; @@ -2146,6 +2192,127 @@ static const struct net_device_ops b44_netdev_ops = { #endif }; +static void b44_adjust_link(struct net_device *dev) +{ + struct b44 *bp = netdev_priv(dev); + struct phy_device *phydev = bp->phydev; + bool status_changed = 0; + + BUG_ON(!phydev); + + if (bp->old_link != phydev->link) { + status_changed = 1; + bp->old_link = phydev->link; + } + + /* reflect duplex change */ + if (phydev->link) { + if ((phydev->duplex == DUPLEX_HALF) && + (bp->flags & B44_FLAG_FULL_DUPLEX)) { + status_changed = 1; + bp->flags &= ~B44_FLAG_FULL_DUPLEX; + } else if ((phydev->duplex == DUPLEX_FULL) && + !(bp->flags & B44_FLAG_FULL_DUPLEX)) { + status_changed = 1; + bp->flags |= B44_FLAG_FULL_DUPLEX; + } + } + + if (status_changed) { + b44_check_phy(bp); + phy_print_status(phydev); + } +} + +static int b44_register_phy_one(struct b44 *bp) +{ + struct mii_bus *mii_bus; + struct ssb_device *sdev = bp->sdev; + struct phy_device *phydev; + char bus_id[MII_BUS_ID_SIZE + 3]; + int err; + + mii_bus = mdiobus_alloc(); + if (!mii_bus) { + dev_err(sdev->dev, "mdiobus_alloc() failed\n"); + err = -ENOMEM; + goto err_out; + } + + mii_bus->priv = bp; + mii_bus->read = b44_mdio_read_phylib; + mii_bus->write = b44_mdio_write_phylib; + mii_bus->name = "b44_eth_mii"; + mii_bus->parent = sdev->dev; + mii_bus->phy_mask = ~(1 << bp->phy_addr); + snprintf(mii_bus->id, MII_BUS_ID_SIZE, "%x", instance); + mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); + if (!mii_bus->irq) { + dev_err(sdev->dev, "mii_bus irq allocation failed\n"); + err = -ENOMEM; + goto err_out_mdiobus; + } + + memset(mii_bus->irq, PHY_POLL, sizeof(int) * PHY_MAX_ADDR); + + bp->mii_bus = mii_bus; + + err = mdiobus_register(mii_bus); + if (err) { + dev_err(sdev->dev, "failed to register MII bus\n"); + goto err_out_mdiobus_irq; + } + + snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, mii_bus->id, bp->phy_addr); + + phydev = phy_connect(bp->dev, bus_id, &b44_adjust_link, + PHY_INTERFACE_MODE_MII); + if (IS_ERR(phydev)) { + dev_err(sdev->dev, "could not attach PHY at %i\n", + bp->phy_addr); + err = PTR_ERR(phydev); + goto err_out_mdiobus_unregister; + } + + /* mask with MAC supported features */ + phydev->supported &= (SUPPORTED_100baseT_Half | + SUPPORTED_100baseT_Full | + SUPPORTED_Autoneg | + SUPPORTED_MII); + phydev->advertising = phydev->supported; + + bp->phydev = phydev; + bp->old_link = 0; + bp->phy_addr = phydev->addr; + + dev_info(sdev->dev, "attached PHY driver [%s] (mii_bus:phy_addr=%s)\n", + phydev->drv->name, dev_name(&phydev->dev)); + + return 0; + +err_out_mdiobus_unregister: + mdiobus_unregister(mii_bus); + +err_out_mdiobus_irq: + kfree(mii_bus->irq); + +err_out_mdiobus: + mdiobus_free(mii_bus); + +err_out: + return err; +} + +static void b44_unregister_phy_one(struct b44 *bp) +{ + struct mii_bus *mii_bus = bp->mii_bus; + + phy_disconnect(bp->phydev); + mdiobus_unregister(mii_bus); + kfree(mii_bus->irq); + mdiobus_free(mii_bus); +} + static int b44_init_one(struct ssb_device *sdev, const struct ssb_device_id *ent) { @@ -2245,10 +2412,20 @@ static int b44_init_one(struct ssb_device *sdev, if (b44_phy_reset(bp) < 0) bp->phy_addr = B44_PHY_ADDR_NO_LOCAL_PHY; + if (bp->flags & B44_FLAG_EXTERNAL_PHY) { + err = b44_register_phy_one(bp); + if (err) { + dev_err(sdev->dev, "Cannot register PHY, aborting\n"); + goto err_out_unregister_netdev; + } + } + netdev_info(dev, "%s %pM\n", DRV_DESCRIPTION, dev->dev_addr); return 0; +err_out_unregister_netdev: + unregister_netdev(dev); err_out_powerdown: ssb_bus_may_powerdown(sdev->bus); @@ -2262,8 +2439,11 @@ out: static void b44_remove_one(struct ssb_device *sdev) { struct net_device *dev = ssb_get_drvdata(sdev); + struct b44 *bp = netdev_priv(dev); unregister_netdev(dev); + if (bp->flags & B44_FLAG_EXTERNAL_PHY) + b44_unregister_phy_one(bp); ssb_device_disable(sdev, 0); ssb_bus_may_powerdown(sdev->bus); free_netdev(dev); diff --git a/drivers/net/ethernet/broadcom/b44.h b/drivers/net/ethernet/broadcom/b44.h index 4b0c5d2fa598..de81639d9236 100644 --- a/drivers/net/ethernet/broadcom/b44.h +++ b/drivers/net/ethernet/broadcom/b44.h @@ -397,6 +397,9 @@ struct b44 { u32 tx_pending; u8 phy_addr; u8 force_copybreak; + struct phy_device *phydev; + struct mii_bus *mii_bus; + int old_link; struct mii_if_info mii_if; }; |