| /* |
| * drivers/net/phy/phy.c |
| * |
| * Framework for configuring and reading PHY devices |
| * Based on code in sungem_phy.c and gianfar_phy.c |
| * |
| * Author: Andy Fleming |
| * |
| * Copyright (c) 2004 Freescale Semiconductor, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| */ |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/string.h> |
| #include <linux/errno.h> |
| #include <linux/unistd.h> |
| #include <linux/slab.h> |
| #include <linux/interrupt.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/skbuff.h> |
| #include <linux/spinlock.h> |
| #include <linux/mm.h> |
| #include <linux/module.h> |
| #include <linux/mii.h> |
| #include <linux/ethtool.h> |
| #include <linux/phy.h> |
| |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| #include <asm/uaccess.h> |
| |
| /* Convenience function to print out the current phy status |
| */ |
| void phy_print_status(struct phy_device *phydev) |
| { |
| pr_info("PHY: %s - Link is %s", phydev->dev.bus_id, |
| phydev->link ? "Up" : "Down"); |
| if (phydev->link) |
| printk(" - %d/%s", phydev->speed, |
| DUPLEX_FULL == phydev->duplex ? |
| "Full" : "Half"); |
| |
| printk("\n"); |
| } |
| EXPORT_SYMBOL(phy_print_status); |
| |
| |
| /* Convenience functions for reading/writing a given PHY |
| * register. They MUST NOT be called from interrupt context, |
| * because the bus read/write functions may wait for an interrupt |
| * to conclude the operation. */ |
| int phy_read(struct phy_device *phydev, u16 regnum) |
| { |
| int retval; |
| struct mii_bus *bus = phydev->bus; |
| |
| spin_lock_bh(&bus->mdio_lock); |
| retval = bus->read(bus, phydev->addr, regnum); |
| spin_unlock_bh(&bus->mdio_lock); |
| |
| return retval; |
| } |
| EXPORT_SYMBOL(phy_read); |
| |
| int phy_write(struct phy_device *phydev, u16 regnum, u16 val) |
| { |
| int err; |
| struct mii_bus *bus = phydev->bus; |
| |
| spin_lock_bh(&bus->mdio_lock); |
| err = bus->write(bus, phydev->addr, regnum, val); |
| spin_unlock_bh(&bus->mdio_lock); |
| |
| return err; |
| } |
| EXPORT_SYMBOL(phy_write); |
| |
| |
| int phy_clear_interrupt(struct phy_device *phydev) |
| { |
| int err = 0; |
| |
| if (phydev->drv->ack_interrupt) |
| err = phydev->drv->ack_interrupt(phydev); |
| |
| return err; |
| } |
| |
| |
| int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
| { |
| int err = 0; |
| |
| phydev->interrupts = interrupts; |
| if (phydev->drv->config_intr) |
| err = phydev->drv->config_intr(phydev); |
| |
| return err; |
| } |
| |
| |
| /* phy_aneg_done |
| * |
| * description: Reads the status register and returns 0 either if |
| * auto-negotiation is incomplete, or if there was an error. |
| * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. |
| */ |
| static inline int phy_aneg_done(struct phy_device *phydev) |
| { |
| int retval; |
| |
| retval = phy_read(phydev, MII_BMSR); |
| |
| return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); |
| } |
| |
| /* A structure for mapping a particular speed and duplex |
| * combination to a particular SUPPORTED and ADVERTISED value */ |
| struct phy_setting { |
| int speed; |
| int duplex; |
| u32 setting; |
| }; |
| |
| /* A mapping of all SUPPORTED settings to speed/duplex */ |
| static const struct phy_setting settings[] = { |
| { |
| .speed = 10000, |
| .duplex = DUPLEX_FULL, |
| .setting = SUPPORTED_10000baseT_Full, |
| }, |
| { |
| .speed = SPEED_1000, |
| .duplex = DUPLEX_FULL, |
| .setting = SUPPORTED_1000baseT_Full, |
| }, |
| { |
| .speed = SPEED_1000, |
| .duplex = DUPLEX_HALF, |
| .setting = SUPPORTED_1000baseT_Half, |
| }, |
| { |
| .speed = SPEED_100, |
| .duplex = DUPLEX_FULL, |
| .setting = SUPPORTED_100baseT_Full, |
| }, |
| { |
| .speed = SPEED_100, |
| .duplex = DUPLEX_HALF, |
| .setting = SUPPORTED_100baseT_Half, |
| }, |
| { |
| .speed = SPEED_10, |
| .duplex = DUPLEX_FULL, |
| .setting = SUPPORTED_10baseT_Full, |
| }, |
| { |
| .speed = SPEED_10, |
| .duplex = DUPLEX_HALF, |
| .setting = SUPPORTED_10baseT_Half, |
| }, |
| }; |
| |
| #define MAX_NUM_SETTINGS (sizeof(settings)/sizeof(struct phy_setting)) |
| |
| /* phy_find_setting |
| * |
| * description: Searches the settings array for the setting which |
| * matches the desired speed and duplex, and returns the index |
| * of that setting. Returns the index of the last setting if |
| * none of the others match. |
| */ |
| static inline int phy_find_setting(int speed, int duplex) |
| { |
| int idx = 0; |
| |
| while (idx < ARRAY_SIZE(settings) && |
| (settings[idx].speed != speed || |
| settings[idx].duplex != duplex)) |
| idx++; |
| |
| return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; |
| } |
| |
| /* phy_find_valid |
| * idx: The first index in settings[] to search |
| * features: A mask of the valid settings |
| * |
| * description: Returns the index of the first valid setting less |
| * than or equal to the one pointed to by idx, as determined by |
| * the mask in features. Returns the index of the last setting |
| * if nothing else matches. |
| */ |
| static inline int phy_find_valid(int idx, u32 features) |
| { |
| while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) |
| idx++; |
| |
| return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; |
| } |
| |
| /* phy_sanitize_settings |
| * |
| * description: Make sure the PHY is set to supported speeds and |
| * duplexes. Drop down by one in this order: 1000/FULL, |
| * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF |
| */ |
| void phy_sanitize_settings(struct phy_device *phydev) |
| { |
| u32 features = phydev->supported; |
| int idx; |
| |
| /* Sanitize settings based on PHY capabilities */ |
| if ((features & SUPPORTED_Autoneg) == 0) |
| phydev->autoneg = 0; |
| |
| idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), |
| features); |
| |
| phydev->speed = settings[idx].speed; |
| phydev->duplex = settings[idx].duplex; |
| } |
| EXPORT_SYMBOL(phy_sanitize_settings); |
| |
| /* phy_ethtool_sset: |
| * A generic ethtool sset function. Handles all the details |
| * |
| * A few notes about parameter checking: |
| * - We don't set port or transceiver, so we don't care what they |
| * were set to. |
| * - phy_start_aneg() will make sure forced settings are sane, and |
| * choose the next best ones from the ones selected, so we don't |
| * care if ethtool tries to give us bad values |
| * |
| */ |
| int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) |
| { |
| if (cmd->phy_address != phydev->addr) |
| return -EINVAL; |
| |
| /* We make sure that we don't pass unsupported |
| * values in to the PHY */ |
| cmd->advertising &= phydev->supported; |
| |
| /* Verify the settings we care about. */ |
| if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) |
| return -EINVAL; |
| |
| if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) |
| return -EINVAL; |
| |
| if (cmd->autoneg == AUTONEG_DISABLE |
| && ((cmd->speed != SPEED_1000 |
| && cmd->speed != SPEED_100 |
| && cmd->speed != SPEED_10) |
| || (cmd->duplex != DUPLEX_HALF |
| && cmd->duplex != DUPLEX_FULL))) |
| return -EINVAL; |
| |
| phydev->autoneg = cmd->autoneg; |
| |
| phydev->speed = cmd->speed; |
| |
| phydev->advertising = cmd->advertising; |
| |
| if (AUTONEG_ENABLE == cmd->autoneg) |
| phydev->advertising |= ADVERTISED_Autoneg; |
| else |
| phydev->advertising &= ~ADVERTISED_Autoneg; |
| |
| phydev->duplex = cmd->duplex; |
| |
| /* Restart the PHY */ |
| phy_start_aneg(phydev); |
| |
| return 0; |
| } |
| |
| int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) |
| { |
| cmd->supported = phydev->supported; |
| |
| cmd->advertising = phydev->advertising; |
| |
| cmd->speed = phydev->speed; |
| cmd->duplex = phydev->duplex; |
| cmd->port = PORT_MII; |
| cmd->phy_address = phydev->addr; |
| cmd->transceiver = XCVR_EXTERNAL; |
| cmd->autoneg = phydev->autoneg; |
| |
| return 0; |
| } |
| |
| |
| /* Note that this function is currently incompatible with the |
| * PHYCONTROL layer. It changes registers without regard to |
| * current state. Use at own risk |
| */ |
| int phy_mii_ioctl(struct phy_device *phydev, |
| struct mii_ioctl_data *mii_data, int cmd) |
| { |
| u16 val = mii_data->val_in; |
| |
| switch (cmd) { |
| case SIOCGMIIPHY: |
| mii_data->phy_id = phydev->addr; |
| break; |
| case SIOCGMIIREG: |
| mii_data->val_out = phy_read(phydev, mii_data->reg_num); |
| break; |
| |
| case SIOCSMIIREG: |
| if (!capable(CAP_NET_ADMIN)) |
| return -EPERM; |
| |
| if (mii_data->phy_id == phydev->addr) { |
| switch(mii_data->reg_num) { |
| case MII_BMCR: |
| if (val & (BMCR_RESET|BMCR_ANENABLE)) |
| phydev->autoneg = AUTONEG_DISABLE; |
| else |
| phydev->autoneg = AUTONEG_ENABLE; |
| if ((!phydev->autoneg) && (val & BMCR_FULLDPLX)) |
| phydev->duplex = DUPLEX_FULL; |
| else |
| phydev->duplex = DUPLEX_HALF; |
| break; |
| case MII_ADVERTISE: |
| phydev->advertising = val; |
| break; |
| default: |
| /* do nothing */ |
| break; |
| } |
| } |
| |
| phy_write(phydev, mii_data->reg_num, val); |
| |
| if (mii_data->reg_num == MII_BMCR |
| && val & BMCR_RESET |
| && phydev->drv->config_init) |
| phydev->drv->config_init(phydev); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /* phy_start_aneg |
| * |
| * description: Sanitizes the settings (if we're not |
| * autonegotiating them), and then calls the driver's |
| * config_aneg function. If the PHYCONTROL Layer is operating, |
| * we change the state to reflect the beginning of |
| * Auto-negotiation or forcing. |
| */ |
| int phy_start_aneg(struct phy_device *phydev) |
| { |
| int err; |
| |
| spin_lock(&phydev->lock); |
| |
| if (AUTONEG_DISABLE == phydev->autoneg) |
| phy_sanitize_settings(phydev); |
| |
| err = phydev->drv->config_aneg(phydev); |
| |
| if (err < 0) |
| goto out_unlock; |
| |
| if (phydev->state != PHY_HALTED) { |
| if (AUTONEG_ENABLE == phydev->autoneg) { |
| phydev->state = PHY_AN; |
| phydev->link_timeout = PHY_AN_TIMEOUT; |
| } else { |
| phydev->state = PHY_FORCING; |
| phydev->link_timeout = PHY_FORCE_TIMEOUT; |
| } |
| } |
| |
| out_unlock: |
| spin_unlock(&phydev->lock); |
| return err; |
| } |
| EXPORT_SYMBOL(phy_start_aneg); |
| |
| |
| static void phy_change(void *data); |
| static void phy_timer(unsigned long data); |
| |
| /* phy_start_machine: |
| * |
| * description: The PHY infrastructure can run a state machine |
| * which tracks whether the PHY is starting up, negotiating, |
| * etc. This function starts the timer which tracks the state |
| * of the PHY. If you want to be notified when the state |
| * changes, pass in the callback, otherwise, pass NULL. If you |
| * want to maintain your own state machine, do not call this |
| * function. */ |
| void phy_start_machine(struct phy_device *phydev, |
| void (*handler)(struct net_device *)) |
| { |
| phydev->adjust_state = handler; |
| |
| init_timer(&phydev->phy_timer); |
| phydev->phy_timer.function = &phy_timer; |
| phydev->phy_timer.data = (unsigned long) phydev; |
| mod_timer(&phydev->phy_timer, jiffies + HZ); |
| } |
| |
| /* phy_stop_machine |
| * |
| * description: Stops the state machine timer, sets the state to UP |
| * (unless it wasn't up yet). This function must be called BEFORE |
| * phy_detach. |
| */ |
| void phy_stop_machine(struct phy_device *phydev) |
| { |
| del_timer_sync(&phydev->phy_timer); |
| |
| spin_lock(&phydev->lock); |
| if (phydev->state > PHY_UP) |
| phydev->state = PHY_UP; |
| spin_unlock(&phydev->lock); |
| |
| phydev->adjust_state = NULL; |
| } |
| |
| /* phy_force_reduction |
| * |
| * description: Reduces the speed/duplex settings by |
| * one notch. The order is so: |
| * 1000/FULL, 1000/HALF, 100/FULL, 100/HALF, |
| * 10/FULL, 10/HALF. The function bottoms out at 10/HALF. |
| */ |
| static void phy_force_reduction(struct phy_device *phydev) |
| { |
| int idx; |
| |
| idx = phy_find_setting(phydev->speed, phydev->duplex); |
| |
| idx++; |
| |
| idx = phy_find_valid(idx, phydev->supported); |
| |
| phydev->speed = settings[idx].speed; |
| phydev->duplex = settings[idx].duplex; |
| |
| pr_info("Trying %d/%s\n", phydev->speed, |
| DUPLEX_FULL == phydev->duplex ? |
| "FULL" : "HALF"); |
| } |
| |
| |
| /* phy_error: |
| * |
| * Moves the PHY to the HALTED state in response to a read |
| * or write error, and tells the controller the link is down. |
| * Must not be called from interrupt context, or while the |
| * phydev->lock is held. |
| */ |
| void phy_error(struct phy_device *phydev) |
| { |
| spin_lock(&phydev->lock); |
| phydev->state = PHY_HALTED; |
| spin_unlock(&phydev->lock); |
| } |
| |
| /* phy_interrupt |
| * |
| * description: When a PHY interrupt occurs, the handler disables |
| * interrupts, and schedules a work task to clear the interrupt. |
| */ |
| static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
| { |
| struct phy_device *phydev = phy_dat; |
| |
| /* The MDIO bus is not allowed to be written in interrupt |
| * context, so we need to disable the irq here. A work |
| * queue will write the PHY to disable and clear the |
| * interrupt, and then reenable the irq line. */ |
| disable_irq_nosync(irq); |
| |
| schedule_work(&phydev->phy_queue); |
| |
| return IRQ_HANDLED; |
| } |
| |
| /* Enable the interrupts from the PHY side */ |
| int phy_enable_interrupts(struct phy_device *phydev) |
| { |
| int err; |
| |
| err = phy_clear_interrupt(phydev); |
| |
| if (err < 0) |
| return err; |
| |
| err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
| |
| return err; |
| } |
| EXPORT_SYMBOL(phy_enable_interrupts); |
| |
| /* Disable the PHY interrupts from the PHY side */ |
| int phy_disable_interrupts(struct phy_device *phydev) |
| { |
| int err; |
| |
| /* Disable PHY interrupts */ |
| err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); |
| |
| if (err) |
| goto phy_err; |
| |
| /* Clear the interrupt */ |
| err = phy_clear_interrupt(phydev); |
| |
| if (err) |
| goto phy_err; |
| |
| return 0; |
| |
| phy_err: |
| phy_error(phydev); |
| |
| return err; |
| } |
| EXPORT_SYMBOL(phy_disable_interrupts); |
| |
| /* phy_start_interrupts |
| * |
| * description: Request the interrupt for the given PHY. If |
| * this fails, then we set irq to PHY_POLL. |
| * Otherwise, we enable the interrupts in the PHY. |
| * Returns 0 on success. |
| * This should only be called with a valid IRQ number. |
| */ |
| int phy_start_interrupts(struct phy_device *phydev) |
| { |
| int err = 0; |
| |
| INIT_WORK(&phydev->phy_queue, phy_change, phydev); |
| |
| if (request_irq(phydev->irq, phy_interrupt, |
| IRQF_SHARED, |
| "phy_interrupt", |
| phydev) < 0) { |
| printk(KERN_WARNING "%s: Can't get IRQ %d (PHY)\n", |
| phydev->bus->name, |
| phydev->irq); |
| phydev->irq = PHY_POLL; |
| return 0; |
| } |
| |
| err = phy_enable_interrupts(phydev); |
| |
| return err; |
| } |
| EXPORT_SYMBOL(phy_start_interrupts); |
| |
| int phy_stop_interrupts(struct phy_device *phydev) |
| { |
| int err; |
| |
| err = phy_disable_interrupts(phydev); |
| |
| if (err) |
| phy_error(phydev); |
| |
| free_irq(phydev->irq, phydev); |
| |
| return err; |
| } |
| EXPORT_SYMBOL(phy_stop_interrupts); |
| |
| |
| /* Scheduled by the phy_interrupt/timer to handle PHY changes */ |
| static void phy_change(void *data) |
| { |
| int err; |
| struct phy_device *phydev = data; |
| |
| err = phy_disable_interrupts(phydev); |
| |
| if (err) |
| goto phy_err; |
| |
| spin_lock(&phydev->lock); |
| if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
| phydev->state = PHY_CHANGELINK; |
| spin_unlock(&phydev->lock); |
| |
| enable_irq(phydev->irq); |
| |
| /* Reenable interrupts */ |
| err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
| |
| if (err) |
| goto irq_enable_err; |
| |
| return; |
| |
| irq_enable_err: |
| disable_irq(phydev->irq); |
| phy_err: |
| phy_error(phydev); |
| } |
| |
| /* Bring down the PHY link, and stop checking the status. */ |
| void phy_stop(struct phy_device *phydev) |
| { |
| spin_lock(&phydev->lock); |
| |
| if (PHY_HALTED == phydev->state) |
| goto out_unlock; |
| |
| if (phydev->irq != PHY_POLL) { |
| /* Clear any pending interrupts */ |
| phy_clear_interrupt(phydev); |
| |
| /* Disable PHY Interrupts */ |
| phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); |
| } |
| |
| phydev->state = PHY_HALTED; |
| |
| out_unlock: |
| spin_unlock(&phydev->lock); |
| } |
| |
| |
| /* phy_start |
| * |
| * description: Indicates the attached device's readiness to |
| * handle PHY-related work. Used during startup to start the |
| * PHY, and after a call to phy_stop() to resume operation. |
| * Also used to indicate the MDIO bus has cleared an error |
| * condition. |
| */ |
| void phy_start(struct phy_device *phydev) |
| { |
| spin_lock(&phydev->lock); |
| |
| switch (phydev->state) { |
| case PHY_STARTING: |
| phydev->state = PHY_PENDING; |
| break; |
| case PHY_READY: |
| phydev->state = PHY_UP; |
| break; |
| case PHY_HALTED: |
| phydev->state = PHY_RESUMING; |
| default: |
| break; |
| } |
| spin_unlock(&phydev->lock); |
| } |
| EXPORT_SYMBOL(phy_stop); |
| EXPORT_SYMBOL(phy_start); |
| |
| /* PHY timer which handles the state machine */ |
| static void phy_timer(unsigned long data) |
| { |
| struct phy_device *phydev = (struct phy_device *)data; |
| int needs_aneg = 0; |
| int err = 0; |
| |
| spin_lock(&phydev->lock); |
| |
| if (phydev->adjust_state) |
| phydev->adjust_state(phydev->attached_dev); |
| |
| switch(phydev->state) { |
| case PHY_DOWN: |
| case PHY_STARTING: |
| case PHY_READY: |
| case PHY_PENDING: |
| break; |
| case PHY_UP: |
| needs_aneg = 1; |
| |
| phydev->link_timeout = PHY_AN_TIMEOUT; |
| |
| break; |
| case PHY_AN: |
| /* Check if negotiation is done. Break |
| * if there's an error */ |
| err = phy_aneg_done(phydev); |
| if (err < 0) |
| break; |
| |
| /* If auto-negotiation is done, we change to |
| * either RUNNING, or NOLINK */ |
| if (err > 0) { |
| err = phy_read_status(phydev); |
| |
| if (err) |
| break; |
| |
| if (phydev->link) { |
| phydev->state = PHY_RUNNING; |
| netif_carrier_on(phydev->attached_dev); |
| } else { |
| phydev->state = PHY_NOLINK; |
| netif_carrier_off(phydev->attached_dev); |
| } |
| |
| phydev->adjust_link(phydev->attached_dev); |
| |
| } else if (0 == phydev->link_timeout--) { |
| /* The counter expired, so either we |
| * switch to forced mode, or the |
| * magic_aneg bit exists, and we try aneg |
| * again */ |
| if (!(phydev->drv->flags & PHY_HAS_MAGICANEG)) { |
| int idx; |
| |
| /* We'll start from the |
| * fastest speed, and work |
| * our way down */ |
| idx = phy_find_valid(0, |
| phydev->supported); |
| |
| phydev->speed = settings[idx].speed; |
| phydev->duplex = settings[idx].duplex; |
| |
| phydev->autoneg = AUTONEG_DISABLE; |
| phydev->state = PHY_FORCING; |
| phydev->link_timeout = |
| PHY_FORCE_TIMEOUT; |
| |
| pr_info("Trying %d/%s\n", |
| phydev->speed, |
| DUPLEX_FULL == |
| phydev->duplex ? |
| "FULL" : "HALF"); |
| } |
| |
| needs_aneg = 1; |
| } |
| break; |
| case PHY_NOLINK: |
| err = phy_read_status(phydev); |
| |
| if (err) |
| break; |
| |
| if (phydev->link) { |
| phydev->state = PHY_RUNNING; |
| netif_carrier_on(phydev->attached_dev); |
| phydev->adjust_link(phydev->attached_dev); |
| } |
| break; |
| case PHY_FORCING: |
| err = phy_read_status(phydev); |
| |
| if (err) |
| break; |
| |
| if (phydev->link) { |
| phydev->state = PHY_RUNNING; |
| netif_carrier_on(phydev->attached_dev); |
| } else { |
| if (0 == phydev->link_timeout--) { |
| phy_force_reduction(phydev); |
| needs_aneg = 1; |
| } |
| } |
| |
| phydev->adjust_link(phydev->attached_dev); |
| break; |
| case PHY_RUNNING: |
| /* Only register a CHANGE if we are |
| * polling */ |
| if (PHY_POLL == phydev->irq) |
| phydev->state = PHY_CHANGELINK; |
| break; |
| case PHY_CHANGELINK: |
| err = phy_read_status(phydev); |
| |
| if (err) |
| break; |
| |
| if (phydev->link) { |
| phydev->state = PHY_RUNNING; |
| netif_carrier_on(phydev->attached_dev); |
| } else { |
| phydev->state = PHY_NOLINK; |
| netif_carrier_off(phydev->attached_dev); |
| } |
| |
| phydev->adjust_link(phydev->attached_dev); |
| |
| if (PHY_POLL != phydev->irq) |
| err = phy_config_interrupt(phydev, |
| PHY_INTERRUPT_ENABLED); |
| break; |
| case PHY_HALTED: |
| if (phydev->link) { |
| phydev->link = 0; |
| netif_carrier_off(phydev->attached_dev); |
| phydev->adjust_link(phydev->attached_dev); |
| } |
| break; |
| case PHY_RESUMING: |
| |
| err = phy_clear_interrupt(phydev); |
| |
| if (err) |
| break; |
| |
| err = phy_config_interrupt(phydev, |
| PHY_INTERRUPT_ENABLED); |
| |
| if (err) |
| break; |
| |
| if (AUTONEG_ENABLE == phydev->autoneg) { |
| err = phy_aneg_done(phydev); |
| if (err < 0) |
| break; |
| |
| /* err > 0 if AN is done. |
| * Otherwise, it's 0, and we're |
| * still waiting for AN */ |
| if (err > 0) { |
| phydev->state = PHY_RUNNING; |
| } else { |
| phydev->state = PHY_AN; |
| phydev->link_timeout = PHY_AN_TIMEOUT; |
| } |
| } else |
| phydev->state = PHY_RUNNING; |
| break; |
| } |
| |
| spin_unlock(&phydev->lock); |
| |
| if (needs_aneg) |
| err = phy_start_aneg(phydev); |
| |
| if (err < 0) |
| phy_error(phydev); |
| |
| mod_timer(&phydev->phy_timer, jiffies + PHY_STATE_TIME * HZ); |
| } |
| |