diff options
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/fec_mpc52xx.c | 180 | ||||
-rw-r--r-- | drivers/net/fec_mpc52xx_phy.c | 26 |
2 files changed, 59 insertions, 147 deletions
diff --git a/drivers/net/fec_mpc52xx.c b/drivers/net/fec_mpc52xx.c index 8bbe7f61799..7d443405bbe 100644 --- a/drivers/net/fec_mpc52xx.c +++ b/drivers/net/fec_mpc52xx.c @@ -25,6 +25,7 @@ #include <linux/hardirq.h> #include <linux/delay.h> #include <linux/of_device.h> +#include <linux/of_mdio.h> #include <linux/of_platform.h> #include <linux/netdevice.h> @@ -43,11 +44,9 @@ #define DRIVER_NAME "mpc52xx-fec" -#define FEC5200_PHYADDR_NONE (-1) -#define FEC5200_PHYADDR_7WIRE (-2) - /* Private driver data structure */ struct mpc52xx_fec_priv { + struct net_device *ndev; int duplex; int speed; int r_irq; @@ -59,10 +58,11 @@ struct mpc52xx_fec_priv { int msg_enable; /* MDIO link details */ - int phy_addr; - unsigned int phy_speed; + unsigned int mdio_speed; + struct device_node *phy_node; struct phy_device *phydev; enum phy_state link; + int seven_wire_mode; }; @@ -211,85 +211,25 @@ static void mpc52xx_fec_adjust_link(struct net_device *dev) phy_print_status(phydev); } -static int mpc52xx_fec_init_phy(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - struct phy_device *phydev; - char phy_id[BUS_ID_SIZE]; - - snprintf(phy_id, sizeof(phy_id), "%x:%02x", - (unsigned int)dev->base_addr, priv->phy_addr); - - priv->link = PHY_DOWN; - priv->speed = 0; - priv->duplex = -1; - - phydev = phy_connect(dev, phy_id, &mpc52xx_fec_adjust_link, 0, PHY_INTERFACE_MODE_MII); - if (IS_ERR(phydev)) { - dev_err(&dev->dev, "phy_connect failed\n"); - return PTR_ERR(phydev); - } - dev_info(&dev->dev, "attached phy %i to driver %s\n", - phydev->addr, phydev->drv->name); - - priv->phydev = phydev; - - return 0; -} - -static int mpc52xx_fec_phy_start(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - int err; - - if (priv->phy_addr < 0) - return 0; - - err = mpc52xx_fec_init_phy(dev); - if (err) { - dev_err(&dev->dev, "mpc52xx_fec_init_phy failed\n"); - return err; - } - - /* reset phy - this also wakes it from PDOWN */ - phy_write(priv->phydev, MII_BMCR, BMCR_RESET); - phy_start(priv->phydev); - - return 0; -} - -static void mpc52xx_fec_phy_stop(struct net_device *dev) -{ - struct mpc52xx_fec_priv *priv = netdev_priv(dev); - - if (!priv->phydev) - return; - - phy_disconnect(priv->phydev); - /* power down phy */ - phy_stop(priv->phydev); - phy_write(priv->phydev, MII_BMCR, BMCR_PDOWN); -} - -static void mpc52xx_fec_phy_hw_init(struct mpc52xx_fec_priv *priv) -{ - struct mpc52xx_fec __iomem *fec = priv->fec; - - if (priv->phydev) - return; - - out_be32(&fec->mii_speed, priv->phy_speed); -} - static int mpc52xx_fec_open(struct net_device *dev) { struct mpc52xx_fec_priv *priv = netdev_priv(dev); int err = -EBUSY; + if (priv->phy_node) { + priv->phydev = of_phy_connect(priv->ndev, priv->phy_node, + mpc52xx_fec_adjust_link, 0, 0); + if (!priv->phydev) { + dev_err(&dev->dev, "of_phy_connect failed\n"); + return -ENODEV; + } + phy_start(priv->phydev); + } + if (request_irq(dev->irq, &mpc52xx_fec_interrupt, IRQF_SHARED, DRIVER_NAME "_ctrl", dev)) { dev_err(&dev->dev, "ctrl interrupt request failed\n"); - goto out; + goto free_phy; } if (request_irq(priv->r_irq, &mpc52xx_fec_rx_interrupt, 0, DRIVER_NAME "_rx", dev)) { @@ -311,10 +251,6 @@ static int mpc52xx_fec_open(struct net_device *dev) goto free_irqs; } - err = mpc52xx_fec_phy_start(dev); - if (err) - goto free_skbs; - bcom_enable(priv->rx_dmatsk); bcom_enable(priv->tx_dmatsk); @@ -324,16 +260,18 @@ static int mpc52xx_fec_open(struct net_device *dev) return 0; - free_skbs: - mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); - free_irqs: free_irq(priv->t_irq, dev); free_2irqs: free_irq(priv->r_irq, dev); free_ctrl_irq: free_irq(dev->irq, dev); - out: + free_phy: + if (priv->phydev) { + phy_stop(priv->phydev); + phy_disconnect(priv->phydev); + priv->phydev = NULL; + } return err; } @@ -352,7 +290,12 @@ static int mpc52xx_fec_close(struct net_device *dev) free_irq(priv->r_irq, dev); free_irq(priv->t_irq, dev); - mpc52xx_fec_phy_stop(dev); + if (priv->phydev) { + /* power down phy */ + phy_stop(priv->phydev); + phy_disconnect(priv->phydev); + priv->phydev = NULL; + } return 0; } @@ -696,7 +639,7 @@ static void mpc52xx_fec_hw_init(struct net_device *dev) /* set phy speed. * this can't be done in phy driver, since it needs to be called * before fec stuff (even on resume) */ - mpc52xx_fec_phy_hw_init(priv); + out_be32(&fec->mii_speed, priv->mdio_speed); } /** @@ -732,7 +675,7 @@ static void mpc52xx_fec_start(struct net_device *dev) rcntrl = FEC_RX_BUFFER_SIZE << 16; /* max frame length */ rcntrl |= FEC_RCNTRL_FCE; - if (priv->phy_addr != FEC5200_PHYADDR_7WIRE) + if (!priv->seven_wire_mode) rcntrl |= FEC_RCNTRL_MII_MODE; if (priv->duplex == DUPLEX_FULL) @@ -798,8 +741,6 @@ static void mpc52xx_fec_stop(struct net_device *dev) /* Stop FEC */ out_be32(&fec->ecntrl, in_be32(&fec->ecntrl) & ~FEC_ECNTRL_ETHER_EN); - - return; } /* reset fec and bestcomm tasks */ @@ -817,9 +758,11 @@ static void mpc52xx_fec_reset(struct net_device *dev) mpc52xx_fec_hw_init(dev); - phy_stop(priv->phydev); - phy_write(priv->phydev, MII_BMCR, BMCR_RESET); - phy_start(priv->phydev); + if (priv->phydev) { + phy_stop(priv->phydev); + phy_write(priv->phydev, MII_BMCR, BMCR_RESET); + phy_start(priv->phydev); + } bcom_fec_rx_reset(priv->rx_dmatsk); bcom_fec_tx_reset(priv->tx_dmatsk); @@ -919,8 +862,6 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match) struct net_device *ndev; struct mpc52xx_fec_priv *priv = NULL; struct resource mem; - struct device_node *phy_node; - const phandle *phy_handle; const u32 *prop; int prop_size; @@ -933,6 +874,7 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match) return -ENOMEM; priv = netdev_priv(ndev); + priv->ndev = ndev; /* Reserve FEC control zone */ rv = of_address_to_resource(op->node, 0, &mem); @@ -956,6 +898,7 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match) ndev->ethtool_ops = &mpc52xx_fec_ethtool_ops; ndev->watchdog_timeo = FEC_WATCHDOG_TIMEOUT; ndev->base_addr = mem.start; + SET_NETDEV_DEV(ndev, &op->dev); spin_lock_init(&priv->lock); @@ -1003,14 +946,9 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match) */ /* Start with safe defaults for link connection */ - priv->phy_addr = FEC5200_PHYADDR_NONE; priv->speed = 100; priv->duplex = DUPLEX_HALF; - priv->phy_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1; - - /* the 7-wire property means don't use MII mode */ - if (of_find_property(op->node, "fsl,7-wire-mode", NULL)) - priv->phy_addr = FEC5200_PHYADDR_7WIRE; + priv->mdio_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1; /* The current speed preconfigures the speed of the MII link */ prop = of_get_property(op->node, "current-speed", &prop_size); @@ -1019,43 +957,23 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match) priv->duplex = prop[1] ? DUPLEX_FULL : DUPLEX_HALF; } - /* If there is a phy handle, setup link to that phy */ - phy_handle = of_get_property(op->node, "phy-handle", &prop_size); - if (phy_handle && (prop_size >= sizeof(phandle))) { - phy_node = of_find_node_by_phandle(*phy_handle); - prop = of_get_property(phy_node, "reg", &prop_size); - if (prop && (prop_size >= sizeof(u32))) - if ((*prop >= 0) && (*prop < PHY_MAX_ADDR)) - priv->phy_addr = *prop; - of_node_put(phy_node); + /* If there is a phy handle, then get the PHY node */ + priv->phy_node = of_parse_phandle(op->node, "phy-handle", 0); + + /* the 7-wire property means don't use MII mode */ + if (of_find_property(op->node, "fsl,7-wire-mode", NULL)) { + priv->seven_wire_mode = 1; + dev_info(&ndev->dev, "using 7-wire PHY mode\n"); } /* Hardware init */ mpc52xx_fec_hw_init(ndev); - mpc52xx_fec_reset_stats(ndev); - SET_NETDEV_DEV(ndev, &op->dev); - - /* Register the new network device */ rv = register_netdev(ndev); if (rv < 0) goto probe_error; - /* Now report the link setup */ - switch (priv->phy_addr) { - case FEC5200_PHYADDR_NONE: - dev_info(&ndev->dev, "Fixed speed MII link: %i%cD\n", - priv->speed, priv->duplex ? 'F' : 'H'); - break; - case FEC5200_PHYADDR_7WIRE: - dev_info(&ndev->dev, "using 7-wire PHY mode\n"); - break; - default: - dev_info(&ndev->dev, "Using PHY at MDIO address %i\n", - priv->phy_addr); - } - /* We're done ! */ dev_set_drvdata(&op->dev, ndev); @@ -1065,6 +983,10 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match) /* Error handling - free everything that might be allocated */ probe_error: + if (priv->phy_node) + of_node_put(priv->phy_node); + priv->phy_node = NULL; + irq_dispose_mapping(ndev->irq); if (priv->rx_dmatsk) @@ -1093,6 +1015,10 @@ mpc52xx_fec_remove(struct of_device *op) unregister_netdev(ndev); + if (priv->phy_node) + of_node_put(priv->phy_node); + priv->phy_node = NULL; + irq_dispose_mapping(ndev->irq); bcom_fec_rx_release(priv->rx_dmatsk); diff --git a/drivers/net/fec_mpc52xx_phy.c b/drivers/net/fec_mpc52xx_phy.c index dd9bfa42ac3..fec9f245116 100644 --- a/drivers/net/fec_mpc52xx_phy.c +++ b/drivers/net/fec_mpc52xx_phy.c @@ -14,12 +14,14 @@ #include <linux/netdevice.h> #include <linux/phy.h> #include <linux/of_platform.h> +#include <linux/of_mdio.h> #include <asm/io.h> #include <asm/mpc52xx.h> #include "fec_mpc52xx.h" struct mpc52xx_fec_mdio_priv { struct mpc52xx_fec __iomem *regs; + int mdio_irqs[PHY_MAX_ADDR]; }; static int mpc52xx_fec_mdio_transfer(struct mii_bus *bus, int phy_id, @@ -27,7 +29,7 @@ static int mpc52xx_fec_mdio_transfer(struct mii_bus *bus, int phy_id, { struct mpc52xx_fec_mdio_priv *priv = bus->priv; struct mpc52xx_fec __iomem *fec; - int tries = 100; + int tries = 3; value |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK; value |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK; @@ -38,7 +40,7 @@ static int mpc52xx_fec_mdio_transfer(struct mii_bus *bus, int phy_id, /* wait for it to finish, this takes about 23 us on lite5200b */ while (!(in_be32(&fec->ievent) & FEC_IEVENT_MII) && --tries) - udelay(5); + msleep(1); if (!tries) return -ETIMEDOUT; @@ -64,7 +66,6 @@ static int mpc52xx_fec_mdio_probe(struct of_device *of, { struct device *dev = &of->dev; struct device_node *np = of->node; - struct device_node *child = NULL; struct mii_bus *bus; struct mpc52xx_fec_mdio_priv *priv; struct resource res = {}; @@ -85,22 +86,7 @@ static int mpc52xx_fec_mdio_probe(struct of_device *of, bus->write = mpc52xx_fec_mdio_write; /* setup irqs */ - bus->irq = kmalloc(sizeof(bus->irq[0]) * PHY_MAX_ADDR, GFP_KERNEL); - if (bus->irq == NULL) { - err = -ENOMEM; - goto out_free; - } - for (i=0; i<PHY_MAX_ADDR; i++) - bus->irq[i] = PHY_POLL; - - while ((child = of_get_next_child(np, child)) != NULL) { - int irq = irq_of_parse_and_map(child, 0); - if (irq != NO_IRQ) { - const u32 *id = of_get_property(child, "reg", NULL); - if (id) - bus->irq[*id] = irq; - } - } + bus->irq = priv->mdio_irqs; /* setup registers */ err = of_address_to_resource(np, 0, &res); @@ -122,7 +108,7 @@ static int mpc52xx_fec_mdio_probe(struct of_device *of, out_be32(&priv->regs->mii_speed, ((mpc52xx_find_ipb_freq(of->node) >> 20) / 5) << 1); - err = mdiobus_register(bus); + err = of_mdiobus_register(bus, np); if (err) goto out_unmap; |