| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Andrew Lunn | 1142 | 22.17% | 24 | 12.97% |
| Andy Fleming | 978 | 18.99% | 3 | 1.62% |
| Heiner Kallweit | 880 | 17.09% | 43 | 23.24% |
| Russell King | 426 | 8.27% | 18 | 9.73% |
| Florian Fainelli | 331 | 6.43% | 21 | 11.35% |
| Giuseppe Cavallaro | 314 | 6.10% | 2 | 1.08% |
| Philippe Reynes | 266 | 5.17% | 2 | 1.08% |
| Lukas Wunner | 106 | 2.06% | 1 | 0.54% |
| Michael Stapelberg | 79 | 1.53% | 1 | 0.54% |
| Sean Anderson | 70 | 1.36% | 1 | 0.54% |
| Brian Hill | 58 | 1.13% | 1 | 0.54% |
| Richard Cochran | 48 | 0.93% | 3 | 1.62% |
| Oleksij Rempel | 38 | 0.74% | 4 | 2.16% |
| Nate Case | 31 | 0.60% | 1 | 0.54% |
| Zach Brown | 29 | 0.56% | 3 | 1.62% |
| Sergei Shtylyov | 29 | 0.56% | 3 | 1.62% |
| Guenter Roeck | 26 | 0.50% | 1 | 0.54% |
| Shan Lu | 24 | 0.47% | 1 | 0.54% |
| Francesco Dolcini | 16 | 0.31% | 1 | 0.54% |
| Jakub Kiciński | 13 | 0.25% | 1 | 0.54% |
| Sebastian Hesselbarth | 13 | 0.25% | 1 | 0.54% |
| Yuval Shaia | 12 | 0.23% | 1 | 0.54% |
| Marcin Ślusarz | 12 | 0.23% | 1 | 0.54% |
| Maciej W. Rozycki | 11 | 0.21% | 3 | 1.62% |
| Peter Korsgaard | 11 | 0.21% | 1 | 0.54% |
| Domen Puncer | 11 | 0.21% | 2 | 1.08% |
| Ioana Ciornei | 11 | 0.21% | 2 | 1.08% |
| Lennert Buytenhek | 11 | 0.21% | 2 | 1.08% |
| Jose Abreu | 10 | 0.19% | 1 | 0.54% |
| Raju Lakkaraju | 10 | 0.19% | 1 | 0.54% |
| Joe Perches | 9 | 0.17% | 1 | 0.54% |
| Randy Dunlap | 8 | 0.16% | 2 | 1.08% |
| Anatolij Gustschin | 8 | 0.16% | 1 | 0.54% |
| Marc Gonzalez | 8 | 0.16% | 1 | 0.54% |
| Zhangfei Gao | 8 | 0.16% | 1 | 0.54% |
| Michal Kubeček | 7 | 0.14% | 1 | 0.54% |
| Brad Mouring | 7 | 0.14% | 1 | 0.54% |
| Jerome Brunet | 7 | 0.14% | 1 | 0.54% |
| Michael Walle | 5 | 0.10% | 2 | 1.08% |
| Guangbin Huang | 5 | 0.10% | 1 | 0.54% |
| Jérôme Pouiller | 5 | 0.10% | 1 | 0.54% |
| Tom Lendacky | 5 | 0.10% | 1 | 0.54% |
| Bruce W Allan | 5 | 0.10% | 1 | 0.54% |
| Anton Vorontsov | 5 | 0.10% | 1 | 0.54% |
| Linus Torvalds (pre-git) | 5 | 0.10% | 2 | 1.08% |
| Gustavo A. R. Silva | 4 | 0.08% | 1 | 0.54% |
| Marco Hartmann | 4 | 0.08% | 1 | 0.54% |
| David Woodhouse | 4 | 0.08% | 1 | 0.54% |
| Kumar Gala | 4 | 0.08% | 1 | 0.54% |
| John Crispin | 3 | 0.06% | 1 | 0.54% |
| Stephen Hemminger | 3 | 0.06% | 1 | 0.54% |
| Camelia Groza | 2 | 0.04% | 1 | 0.54% |
| Ed Swierk | 2 | 0.04% | 1 | 0.54% |
| Arnd Bergmann | 2 | 0.04% | 1 | 0.54% |
| Jeff Garzik | 2 | 0.04% | 1 | 0.54% |
| Tim Beale | 1 | 0.02% | 1 | 0.54% |
| Xander Huff | 1 | 0.02% | 1 | 0.54% |
| Jian Shen | 1 | 0.02% | 1 | 0.54% |
| Jean Delvare | 1 | 0.02% | 1 | 0.54% |
| Sean Wang | 1 | 0.02% | 1 | 0.54% |
| Mauro Carvalho Chehab | 1 | 0.02% | 1 | 0.54% |
| Vince Bridgers | 1 | 0.02% | 1 | 0.54% |
| Total | 5150 | 185 |
// SPDX-License-Identifier: GPL-2.0+ /* 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. * Copyright (c) 2006, 2007 Maciej W. Rozycki */ #include <linux/kernel.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/unistd.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/mii.h> #include <linux/ethtool.h> #include <linux/ethtool_netlink.h> #include <linux/phy.h> #include <linux/phy_led_triggers.h> #include <linux/sfp.h> #include <linux/workqueue.h> #include <linux/mdio.h> #include <linux/io.h> #include <linux/uaccess.h> #include <linux/atomic.h> #include <linux/suspend.h> #include <net/netlink.h> #include <net/genetlink.h> #include <net/sock.h> #define PHY_STATE_TIME HZ #define PHY_STATE_STR(_state) \ case PHY_##_state: \ return __stringify(_state); \ static const char *phy_state_to_str(enum phy_state st) { switch (st) { PHY_STATE_STR(DOWN) PHY_STATE_STR(READY) PHY_STATE_STR(UP) PHY_STATE_STR(RUNNING) PHY_STATE_STR(NOLINK) PHY_STATE_STR(CABLETEST) PHY_STATE_STR(HALTED) } return NULL; } static void phy_link_up(struct phy_device *phydev) { phydev->phy_link_change(phydev, true); phy_led_trigger_change_speed(phydev); } static void phy_link_down(struct phy_device *phydev) { phydev->phy_link_change(phydev, false); phy_led_trigger_change_speed(phydev); WRITE_ONCE(phydev->link_down_events, phydev->link_down_events + 1); } static const char *phy_pause_str(struct phy_device *phydev) { bool local_pause, local_asym_pause; if (phydev->autoneg == AUTONEG_DISABLE) goto no_pause; local_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->advertising); local_asym_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, phydev->advertising); if (local_pause && phydev->pause) return "rx/tx"; if (local_asym_pause && phydev->asym_pause) { if (local_pause) return "rx"; if (phydev->pause) return "tx"; } no_pause: return "off"; } /** * phy_print_status - Convenience function to print out the current phy status * @phydev: the phy_device struct */ void phy_print_status(struct phy_device *phydev) { if (phydev->link) { netdev_info(phydev->attached_dev, "Link is Up - %s/%s %s- flow control %s\n", phy_speed_to_str(phydev->speed), phy_duplex_to_str(phydev->duplex), phydev->downshifted_rate ? "(downshifted) " : "", phy_pause_str(phydev)); } else { netdev_info(phydev->attached_dev, "Link is Down\n"); } } EXPORT_SYMBOL(phy_print_status); /** * phy_get_rate_matching - determine if rate matching is supported * @phydev: The phy device to return rate matching for * @iface: The interface mode to use * * This determines the type of rate matching (if any) that @phy supports * using @iface. @iface may be %PHY_INTERFACE_MODE_NA to determine if any * interface supports rate matching. * * Return: The type of rate matching @phy supports for @iface, or * %RATE_MATCH_NONE. */ int phy_get_rate_matching(struct phy_device *phydev, phy_interface_t iface) { int ret = RATE_MATCH_NONE; if (phydev->drv->get_rate_matching) { mutex_lock(&phydev->lock); ret = phydev->drv->get_rate_matching(phydev, iface); mutex_unlock(&phydev->lock); } return ret; } EXPORT_SYMBOL_GPL(phy_get_rate_matching); /** * phy_config_interrupt - configure the PHY device for the requested interrupts * @phydev: the phy_device struct * @interrupts: interrupt flags to configure for this @phydev * * Returns 0 on success or < 0 on error. */ static int phy_config_interrupt(struct phy_device *phydev, bool interrupts) { phydev->interrupts = interrupts ? 1 : 0; if (phydev->drv->config_intr) return phydev->drv->config_intr(phydev); return 0; } /** * phy_restart_aneg - restart auto-negotiation * @phydev: target phy_device struct * * Restart the autonegotiation on @phydev. Returns >= 0 on success or * negative errno on error. */ int phy_restart_aneg(struct phy_device *phydev) { int ret; if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0))) ret = genphy_c45_restart_aneg(phydev); else ret = genphy_restart_aneg(phydev); return ret; } EXPORT_SYMBOL_GPL(phy_restart_aneg); /** * phy_aneg_done - return auto-negotiation status * @phydev: target phy_device struct * * Description: Return the auto-negotiation status from this @phydev * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation * is still pending. */ int phy_aneg_done(struct phy_device *phydev) { if (phydev->drv && phydev->drv->aneg_done) return phydev->drv->aneg_done(phydev); else if (phydev->is_c45) return genphy_c45_aneg_done(phydev); else return genphy_aneg_done(phydev); } EXPORT_SYMBOL(phy_aneg_done); /** * phy_find_valid - find a PHY setting that matches the requested parameters * @speed: desired speed * @duplex: desired duplex * @supported: mask of supported link modes * * Locate a supported phy setting that is, in priority order: * - an exact match for the specified speed and duplex mode * - a match for the specified speed, or slower speed * - the slowest supported speed * Returns the matched phy_setting entry, or %NULL if no supported phy * settings were found. */ static const struct phy_setting * phy_find_valid(int speed, int duplex, unsigned long *supported) { return phy_lookup_setting(speed, duplex, supported, false); } /** * phy_supported_speeds - return all speeds currently supported by a phy device * @phy: The phy device to return supported speeds of. * @speeds: buffer to store supported speeds in. * @size: size of speeds buffer. * * Description: Returns the number of supported speeds, and fills the speeds * buffer with the supported speeds. If speeds buffer is too small to contain * all currently supported speeds, will return as many speeds as can fit. */ unsigned int phy_supported_speeds(struct phy_device *phy, unsigned int *speeds, unsigned int size) { return phy_speeds(speeds, size, phy->supported); } /** * phy_check_valid - check if there is a valid PHY setting which matches * speed, duplex, and feature mask * @speed: speed to match * @duplex: duplex to match * @features: A mask of the valid settings * * Description: Returns true if there is a valid setting, false otherwise. */ static inline bool phy_check_valid(int speed, int duplex, unsigned long *features) { return !!phy_lookup_setting(speed, duplex, features, true); } /** * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex * @phydev: the target phy_device struct * * 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. */ static void phy_sanitize_settings(struct phy_device *phydev) { const struct phy_setting *setting; setting = phy_find_valid(phydev->speed, phydev->duplex, phydev->supported); if (setting) { phydev->speed = setting->speed; phydev->duplex = setting->duplex; } else { /* We failed to find anything (no supported speeds?) */ phydev->speed = SPEED_UNKNOWN; phydev->duplex = DUPLEX_UNKNOWN; } } void phy_ethtool_ksettings_get(struct phy_device *phydev, struct ethtool_link_ksettings *cmd) { mutex_lock(&phydev->lock); linkmode_copy(cmd->link_modes.supported, phydev->supported); linkmode_copy(cmd->link_modes.advertising, phydev->advertising); linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising); cmd->base.speed = phydev->speed; cmd->base.duplex = phydev->duplex; cmd->base.master_slave_cfg = phydev->master_slave_get; cmd->base.master_slave_state = phydev->master_slave_state; cmd->base.rate_matching = phydev->rate_matching; if (phydev->interface == PHY_INTERFACE_MODE_MOCA) cmd->base.port = PORT_BNC; else cmd->base.port = phydev->port; cmd->base.transceiver = phy_is_internal(phydev) ? XCVR_INTERNAL : XCVR_EXTERNAL; cmd->base.phy_address = phydev->mdio.addr; cmd->base.autoneg = phydev->autoneg; cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; cmd->base.eth_tp_mdix = phydev->mdix; mutex_unlock(&phydev->lock); } EXPORT_SYMBOL(phy_ethtool_ksettings_get); /** * phy_mii_ioctl - generic PHY MII ioctl interface * @phydev: the phy_device struct * @ifr: &struct ifreq for socket ioctl's * @cmd: ioctl cmd to execute * * 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 ifreq *ifr, int cmd) { struct mii_ioctl_data *mii_data = if_mii(ifr); u16 val = mii_data->val_in; bool change_autoneg = false; int prtad, devad; switch (cmd) { case SIOCGMIIPHY: mii_data->phy_id = phydev->mdio.addr; fallthrough; case SIOCGMIIREG: if (mdio_phy_id_is_c45(mii_data->phy_id)) { prtad = mdio_phy_id_prtad(mii_data->phy_id); devad = mdio_phy_id_devad(mii_data->phy_id); mii_data->val_out = mdiobus_c45_read( phydev->mdio.bus, prtad, devad, mii_data->reg_num); } else { mii_data->val_out = mdiobus_read( phydev->mdio.bus, mii_data->phy_id, mii_data->reg_num); } return 0; case SIOCSMIIREG: if (mdio_phy_id_is_c45(mii_data->phy_id)) { prtad = mdio_phy_id_prtad(mii_data->phy_id); devad = mdio_phy_id_devad(mii_data->phy_id); } else { prtad = mii_data->phy_id; devad = mii_data->reg_num; } if (prtad == phydev->mdio.addr) { switch (devad) { case MII_BMCR: if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { if (phydev->autoneg == AUTONEG_ENABLE) change_autoneg = true; phydev->autoneg = AUTONEG_DISABLE; if (val & BMCR_FULLDPLX) phydev->duplex = DUPLEX_FULL; else phydev->duplex = DUPLEX_HALF; if (val & BMCR_SPEED1000) phydev->speed = SPEED_1000; else if (val & BMCR_SPEED100) phydev->speed = SPEED_100; else phydev->speed = SPEED_10; } else { if (phydev->autoneg == AUTONEG_DISABLE) change_autoneg = true; phydev->autoneg = AUTONEG_ENABLE; } break; case MII_ADVERTISE: mii_adv_mod_linkmode_adv_t(phydev->advertising, val); change_autoneg = true; break; case MII_CTRL1000: mii_ctrl1000_mod_linkmode_adv_t(phydev->advertising, val); change_autoneg = true; break; default: /* do nothing */ break; } } if (mdio_phy_id_is_c45(mii_data->phy_id)) mdiobus_c45_write(phydev->mdio.bus, prtad, devad, mii_data->reg_num, val); else mdiobus_write(phydev->mdio.bus, prtad, devad, val); if (prtad == phydev->mdio.addr && devad == MII_BMCR && val & BMCR_RESET) return phy_init_hw(phydev); if (change_autoneg) return phy_start_aneg(phydev); return 0; case SIOCSHWTSTAMP: if (phydev->mii_ts && phydev->mii_ts->hwtstamp) return phydev->mii_ts->hwtstamp(phydev->mii_ts, ifr); fallthrough; default: return -EOPNOTSUPP; } } EXPORT_SYMBOL(phy_mii_ioctl); /** * phy_do_ioctl - generic ndo_eth_ioctl implementation * @dev: the net_device struct * @ifr: &struct ifreq for socket ioctl's * @cmd: ioctl cmd to execute */ int phy_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { if (!dev->phydev) return -ENODEV; return phy_mii_ioctl(dev->phydev, ifr, cmd); } EXPORT_SYMBOL(phy_do_ioctl); /** * phy_do_ioctl_running - generic ndo_eth_ioctl implementation but test first * * @dev: the net_device struct * @ifr: &struct ifreq for socket ioctl's * @cmd: ioctl cmd to execute * * Same as phy_do_ioctl, but ensures that net_device is running before * handling the ioctl. */ int phy_do_ioctl_running(struct net_device *dev, struct ifreq *ifr, int cmd) { if (!netif_running(dev)) return -ENODEV; return phy_do_ioctl(dev, ifr, cmd); } EXPORT_SYMBOL(phy_do_ioctl_running); /** * phy_queue_state_machine - Trigger the state machine to run soon * * @phydev: the phy_device struct * @jiffies: Run the state machine after these jiffies */ void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies) { mod_delayed_work(system_power_efficient_wq, &phydev->state_queue, jiffies); } EXPORT_SYMBOL(phy_queue_state_machine); /** * phy_trigger_machine - Trigger the state machine to run now * * @phydev: the phy_device struct */ void phy_trigger_machine(struct phy_device *phydev) { phy_queue_state_machine(phydev, 0); } EXPORT_SYMBOL(phy_trigger_machine); static void phy_abort_cable_test(struct phy_device *phydev) { int err; ethnl_cable_test_finished(phydev); err = phy_init_hw(phydev); if (err) phydev_err(phydev, "Error while aborting cable test"); } /** * phy_ethtool_get_strings - Get the statistic counter names * * @phydev: the phy_device struct * @data: Where to put the strings */ int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data) { if (!phydev->drv) return -EIO; mutex_lock(&phydev->lock); phydev->drv->get_strings(phydev, data); mutex_unlock(&phydev->lock); return 0; } EXPORT_SYMBOL(phy_ethtool_get_strings); /** * phy_ethtool_get_sset_count - Get the number of statistic counters * * @phydev: the phy_device struct */ int phy_ethtool_get_sset_count(struct phy_device *phydev) { int ret; if (!phydev->drv) return -EIO; if (phydev->drv->get_sset_count && phydev->drv->get_strings && phydev->drv->get_stats) { mutex_lock(&phydev->lock); ret = phydev->drv->get_sset_count(phydev); mutex_unlock(&phydev->lock); return ret; } return -EOPNOTSUPP; } EXPORT_SYMBOL(phy_ethtool_get_sset_count); /** * phy_ethtool_get_stats - Get the statistic counters * * @phydev: the phy_device struct * @stats: What counters to get * @data: Where to store the counters */ int phy_ethtool_get_stats(struct phy_device *phydev, struct ethtool_stats *stats, u64 *data) { if (!phydev->drv) return -EIO; mutex_lock(&phydev->lock); phydev->drv->get_stats(phydev, stats, data); mutex_unlock(&phydev->lock); return 0; } EXPORT_SYMBOL(phy_ethtool_get_stats); /** * phy_start_cable_test - Start a cable test * * @phydev: the phy_device struct * @extack: extack for reporting useful error messages */ int phy_start_cable_test(struct phy_device *phydev, struct netlink_ext_ack *extack) { struct net_device *dev = phydev->attached_dev; int err = -ENOMEM; if (!(phydev->drv && phydev->drv->cable_test_start && phydev->drv->cable_test_get_status)) { NL_SET_ERR_MSG(extack, "PHY driver does not support cable testing"); return -EOPNOTSUPP; } mutex_lock(&phydev->lock); if (phydev->state == PHY_CABLETEST) { NL_SET_ERR_MSG(extack, "PHY already performing a test"); err = -EBUSY; goto out; } if (phydev->state < PHY_UP || phydev->state > PHY_CABLETEST) { NL_SET_ERR_MSG(extack, "PHY not configured. Try setting interface up"); err = -EBUSY; goto out; } err = ethnl_cable_test_alloc(phydev, ETHTOOL_MSG_CABLE_TEST_NTF); if (err) goto out; /* Mark the carrier down until the test is complete */ phy_link_down(phydev); netif_testing_on(dev); err = phydev->drv->cable_test_start(phydev); if (err) { netif_testing_off(dev); phy_link_up(phydev); goto out_free; } phydev->state = PHY_CABLETEST; if (phy_polling_mode(phydev)) phy_trigger_machine(phydev); mutex_unlock(&phydev->lock); return 0; out_free: ethnl_cable_test_free(phydev); out: mutex_unlock(&phydev->lock); return err; } EXPORT_SYMBOL(phy_start_cable_test); /** * phy_start_cable_test_tdr - Start a raw TDR cable test * * @phydev: the phy_device struct * @extack: extack for reporting useful error messages * @config: Configuration of the test to run */ int phy_start_cable_test_tdr(struct phy_device *phydev, struct netlink_ext_ack *extack, const struct phy_tdr_config *config) { struct net_device *dev = phydev->attached_dev; int err = -ENOMEM; if (!(phydev->drv && phydev->drv->cable_test_tdr_start && phydev->drv->cable_test_get_status)) { NL_SET_ERR_MSG(extack, "PHY driver does not support cable test TDR"); return -EOPNOTSUPP; } mutex_lock(&phydev->lock); if (phydev->state == PHY_CABLETEST) { NL_SET_ERR_MSG(extack, "PHY already performing a test"); err = -EBUSY; goto out; } if (phydev->state < PHY_UP || phydev->state > PHY_CABLETEST) { NL_SET_ERR_MSG(extack, "PHY not configured. Try setting interface up"); err = -EBUSY; goto out; } err = ethnl_cable_test_alloc(phydev, ETHTOOL_MSG_CABLE_TEST_TDR_NTF); if (err) goto out; /* Mark the carrier down until the test is complete */ phy_link_down(phydev); netif_testing_on(dev); err = phydev->drv->cable_test_tdr_start(phydev, config); if (err) { netif_testing_off(dev); phy_link_up(phydev); goto out_free; } phydev->state = PHY_CABLETEST; if (phy_polling_mode(phydev)) phy_trigger_machine(phydev); mutex_unlock(&phydev->lock); return 0; out_free: ethnl_cable_test_free(phydev); out: mutex_unlock(&phydev->lock); return err; } EXPORT_SYMBOL(phy_start_cable_test_tdr); int phy_config_aneg(struct phy_device *phydev) { if (phydev->drv->config_aneg) return phydev->drv->config_aneg(phydev); /* Clause 45 PHYs that don't implement Clause 22 registers are not * allowed to call genphy_config_aneg() */ if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0))) return genphy_c45_config_aneg(phydev); return genphy_config_aneg(phydev); } EXPORT_SYMBOL(phy_config_aneg); /** * phy_check_link_status - check link status and set state accordingly * @phydev: the phy_device struct * * Description: Check for link and whether autoneg was triggered / is running * and set state accordingly */ static int phy_check_link_status(struct phy_device *phydev) { int err; lockdep_assert_held(&phydev->lock); /* Keep previous state if loopback is enabled because some PHYs * report that Link is Down when loopback is enabled. */ if (phydev->loopback_enabled) return 0; err = phy_read_status(phydev); if (err) return err; if (phydev->link && phydev->state != PHY_RUNNING) { phy_check_downshift(phydev); phydev->state = PHY_RUNNING; phy_link_up(phydev); } else if (!phydev->link && phydev->state != PHY_NOLINK) { phydev->state = PHY_NOLINK; phy_link_down(phydev); } return 0; } /** * _phy_start_aneg - start auto-negotiation for this PHY device * @phydev: the phy_device struct * * 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. */ static int _phy_start_aneg(struct phy_device *phydev) { int err; lockdep_assert_held(&phydev->lock); if (!phydev->drv) return -EIO; if (AUTONEG_DISABLE == phydev->autoneg) phy_sanitize_settings(phydev); err = phy_config_aneg(phydev); if (err < 0) return err; if (phy_is_started(phydev)) err = phy_check_link_status(phydev); return err; } /** * phy_start_aneg - start auto-negotiation for this PHY device * @phydev: the phy_device struct * * 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; mutex_lock(&phydev->lock); err = _phy_start_aneg(phydev); mutex_unlock(&phydev->lock); return err; } EXPORT_SYMBOL(phy_start_aneg); static int phy_poll_aneg_done(struct phy_device *phydev) { unsigned int retries = 100; int ret; do { msleep(100); ret = phy_aneg_done(phydev); } while (!ret && --retries); if (!ret) return -ETIMEDOUT; return ret < 0 ? ret : 0; } int phy_ethtool_ksettings_set(struct phy_device *phydev, const struct ethtool_link_ksettings *cmd) { __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); u8 autoneg = cmd->base.autoneg; u8 duplex = cmd->base.duplex; u32 speed = cmd->base.speed; if (cmd->base.phy_address != phydev->mdio.addr) return -EINVAL; linkmode_copy(advertising, cmd->link_modes.advertising); /* We make sure that we don't pass unsupported values in to the PHY */ linkmode_and(advertising, advertising, phydev->supported); /* Verify the settings we care about. */ if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) return -EINVAL; if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) return -EINVAL; if (autoneg == AUTONEG_DISABLE && ((speed != SPEED_1000 && speed != SPEED_100 && speed != SPEED_10) || (duplex != DUPLEX_HALF && duplex != DUPLEX_FULL))) return -EINVAL; mutex_lock(&phydev->lock); phydev->autoneg = autoneg; if (autoneg == AUTONEG_DISABLE) { phydev->speed = speed; phydev->duplex = duplex; } linkmode_copy(phydev->advertising, advertising); linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->advertising, autoneg == AUTONEG_ENABLE); phydev->master_slave_set = cmd->base.master_slave_cfg; phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; /* Restart the PHY */ if (phy_is_started(phydev)) { phydev->state = PHY_UP; phy_trigger_machine(phydev); } else { _phy_start_aneg(phydev); } mutex_unlock(&phydev->lock); return 0; } EXPORT_SYMBOL(phy_ethtool_ksettings_set); /** * phy_speed_down - set speed to lowest speed supported by both link partners * @phydev: the phy_device struct * @sync: perform action synchronously * * Description: Typically used to save energy when waiting for a WoL packet * * WARNING: Setting sync to false may cause the system being unable to suspend * in case the PHY generates an interrupt when finishing the autonegotiation. * This interrupt may wake up the system immediately after suspend. * Therefore use sync = false only if you're sure it's safe with the respective * network chip. */ int phy_speed_down(struct phy_device *phydev, bool sync) { __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp); int ret; if (phydev->autoneg != AUTONEG_ENABLE) return 0; linkmode_copy(adv_tmp, phydev->advertising); ret = phy_speed_down_core(phydev); if (ret) return ret; linkmode_copy(phydev->adv_old, adv_tmp); if (linkmode_equal(phydev->advertising, adv_tmp)) return 0; ret = phy_config_aneg(phydev); if (ret) return ret; return sync ? phy_poll_aneg_done(phydev) : 0; } EXPORT_SYMBOL_GPL(phy_speed_down); /** * phy_speed_up - (re)set advertised speeds to all supported speeds * @phydev: the phy_device struct * * Description: Used to revert the effect of phy_speed_down */ int phy_speed_up(struct phy_device *phydev) { __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp); if (phydev->autoneg != AUTONEG_ENABLE) return 0; if (linkmode_empty(phydev->adv_old)) return 0; linkmode_copy(adv_tmp, phydev->advertising); linkmode_copy(phydev->advertising, phydev->adv_old); linkmode_zero(phydev->adv_old); if (linkmode_equal(phydev->advertising, adv_tmp)) return 0; return phy_config_aneg(phydev); } EXPORT_SYMBOL_GPL(phy_speed_up); /** * phy_start_machine - start PHY state machine tracking * @phydev: the phy_device struct * * Description: The PHY infrastructure can run a state machine * which tracks whether the PHY is starting up, negotiating, * etc. This function starts the delayed workqueue which tracks * the state of the PHY. If you want to maintain your own state machine, * do not call this function. */ void phy_start_machine(struct phy_device *phydev) { phy_trigger_machine(phydev); } EXPORT_SYMBOL_GPL(phy_start_machine); /** * phy_stop_machine - stop the PHY state machine tracking * @phydev: target phy_device struct * * Description: Stops the state machine delayed workqueue, 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) { cancel_delayed_work_sync(&phydev->state_queue); mutex_lock(&phydev->lock); if (phy_is_started(phydev)) phydev->state = PHY_UP; mutex_unlock(&phydev->lock); } /** * phy_error - enter HALTED state for this PHY device * @phydev: target phy_device struct * * 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) { WARN_ON(1); mutex_lock(&phydev->lock); phydev->state = PHY_HALTED; mutex_unlock(&phydev->lock); phy_trigger_machine(phydev); } EXPORT_SYMBOL(phy_error); /** * phy_disable_interrupts - Disable the PHY interrupts from the PHY side * @phydev: target phy_device struct */ int phy_disable_interrupts(struct phy_device *phydev) { /* Disable PHY interrupts */ return phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); } /** * phy_interrupt - PHY interrupt handler * @irq: interrupt line * @phy_dat: phy_device pointer * * Description: Handle PHY interrupt */ static irqreturn_t phy_interrupt(int irq, void *phy_dat) { struct phy_device *phydev = phy_dat; struct phy_driver *drv = phydev->drv; irqreturn_t ret; /* Wakeup interrupts may occur during a system sleep transition. * Postpone handling until the PHY has resumed. */ if (IS_ENABLED(CONFIG_PM_SLEEP) && phydev->irq_suspended) { struct net_device *netdev = phydev->attached_dev; if (netdev) { struct device *parent = netdev->dev.parent; if (netdev->wol_enabled) pm_system_wakeup(); else if (device_may_wakeup(&netdev->dev)) pm_wakeup_dev_event(&netdev->dev, 0, true); else if (parent && device_may_wakeup(parent)) pm_wakeup_dev_event(parent, 0, true); } phydev->irq_rerun = 1; disable_irq_nosync(irq); return IRQ_HANDLED; } mutex_lock(&phydev->lock); ret = drv->handle_interrupt(phydev); mutex_unlock(&phydev->lock); return ret; } /** * phy_enable_interrupts - Enable the interrupts from the PHY side * @phydev: target phy_device struct */ static int phy_enable_interrupts(struct phy_device *phydev) { return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); } /** * phy_request_interrupt - request and enable interrupt for a PHY device * @phydev: target phy_device struct * * Description: Request and enable the interrupt for the given PHY. * If this fails, then we set irq to PHY_POLL. * This should only be called with a valid IRQ number. */ void phy_request_interrupt(struct phy_device *phydev) { int err; err = request_threaded_irq(phydev->irq, NULL, phy_interrupt, IRQF_ONESHOT | IRQF_SHARED, phydev_name(phydev), phydev); if (err) { phydev_warn(phydev, "Error %d requesting IRQ %d, falling back to polling\n", err, phydev->irq); phydev->irq = PHY_POLL; } else { if (phy_enable_interrupts(phydev)) { phydev_warn(phydev, "Can't enable interrupt, falling back to polling\n"); phy_free_interrupt(phydev); phydev->irq = PHY_POLL; } } } EXPORT_SYMBOL(phy_request_interrupt); /** * phy_free_interrupt - disable and free interrupt for a PHY device * @phydev: target phy_device struct * * Description: Disable and free the interrupt for the given PHY. * This should only be called with a valid IRQ number. */ void phy_free_interrupt(struct phy_device *phydev) { phy_disable_interrupts(phydev); free_irq(phydev->irq, phydev); } EXPORT_SYMBOL(phy_free_interrupt); /** * phy_stop - Bring down the PHY link, and stop checking the status * @phydev: target phy_device struct */ void phy_stop(struct phy_device *phydev) { struct net_device *dev = phydev->attached_dev; if (!phy_is_started(phydev) && phydev->state != PHY_DOWN) { WARN(1, "called from state %s\n", phy_state_to_str(phydev->state)); return; } mutex_lock(&phydev->lock); if (phydev->state == PHY_CABLETEST) { phy_abort_cable_test(phydev); netif_testing_off(dev); } if (phydev->sfp_bus) sfp_upstream_stop(phydev->sfp_bus); phydev->state = PHY_HALTED; mutex_unlock(&phydev->lock); phy_state_machine(&phydev->state_queue.work); phy_stop_machine(phydev); /* Cannot call flush_scheduled_work() here as desired because * of rtnl_lock(), but PHY_HALTED shall guarantee irq handler * will not reenable interrupts. */ } EXPORT_SYMBOL(phy_stop); /** * phy_start - start or restart a PHY device * @phydev: target phy_device struct * * 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) { mutex_lock(&phydev->lock); if (phydev->state != PHY_READY && phydev->state != PHY_HALTED) { WARN(1, "called from state %s\n", phy_state_to_str(phydev->state)); goto out; } if (phydev->sfp_bus) sfp_upstream_start(phydev->sfp_bus); /* if phy was suspended, bring the physical link up again */ __phy_resume(phydev); phydev->state = PHY_UP; phy_start_machine(phydev); out: mutex_unlock(&phydev->lock); } EXPORT_SYMBOL(phy_start); /** * phy_state_machine - Handle the state machine * @work: work_struct that describes the work to be done */ void phy_state_machine(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct phy_device *phydev = container_of(dwork, struct phy_device, state_queue); struct net_device *dev = phydev->attached_dev; bool needs_aneg = false, do_suspend = false; enum phy_state old_state; bool finished = false; int err = 0; mutex_lock(&phydev->lock); old_state = phydev->state; switch (phydev->state) { case PHY_DOWN: case PHY_READY: break; case PHY_UP: needs_aneg = true; break; case PHY_NOLINK: case PHY_RUNNING: err = phy_check_link_status(phydev); break; case PHY_CABLETEST: err = phydev->drv->cable_test_get_status(phydev, &finished); if (err) { phy_abort_cable_test(phydev); netif_testing_off(dev); needs_aneg = true; phydev->state = PHY_UP; break; } if (finished) { ethnl_cable_test_finished(phydev); netif_testing_off(dev); needs_aneg = true; phydev->state = PHY_UP; } break; case PHY_HALTED: if (phydev->link) { phydev->link = 0; phy_link_down(phydev); } do_suspend = true; break; } mutex_unlock(&phydev->lock); if (needs_aneg) err = phy_start_aneg(phydev); else if (do_suspend) phy_suspend(phydev); if (err == -ENODEV) return; if (err < 0) phy_error(phydev); if (old_state != phydev->state) { phydev_dbg(phydev, "PHY state change %s -> %s\n", phy_state_to_str(old_state), phy_state_to_str(phydev->state)); if (phydev->drv && phydev->drv->link_change_notify) phydev->drv->link_change_notify(phydev); } /* Only re-schedule a PHY state machine change if we are polling the * PHY, if PHY_MAC_INTERRUPT is set, then we will be moving * between states from phy_mac_interrupt(). * * In state PHY_HALTED the PHY gets suspended, so rescheduling the * state machine would be pointless and possibly error prone when * called from phy_disconnect() synchronously. */ mutex_lock(&phydev->lock); if (phy_polling_mode(phydev) && phy_is_started(phydev)) phy_queue_state_machine(phydev, PHY_STATE_TIME); mutex_unlock(&phydev->lock); } /** * phy_mac_interrupt - MAC says the link has changed * @phydev: phy_device struct with changed link * * The MAC layer is able to indicate there has been a change in the PHY link * status. Trigger the state machine and work a work queue. */ void phy_mac_interrupt(struct phy_device *phydev) { /* Trigger a state machine change */ phy_trigger_machine(phydev); } EXPORT_SYMBOL(phy_mac_interrupt); static void mmd_eee_adv_to_linkmode(unsigned long *advertising, u16 eee_adv) { linkmode_zero(advertising); if (eee_adv & MDIO_EEE_100TX) linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, advertising); if (eee_adv & MDIO_EEE_1000T) linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, advertising); if (eee_adv & MDIO_EEE_10GT) linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT, advertising); if (eee_adv & MDIO_EEE_1000KX) linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT, advertising); if (eee_adv & MDIO_EEE_10GKX4) linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT, advertising); if (eee_adv & MDIO_EEE_10GKR) linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT, advertising); } /** * phy_init_eee - init and check the EEE feature * @phydev: target phy_device struct * @clk_stop_enable: PHY may stop the clock during LPI * * Description: it checks if the Energy-Efficient Ethernet (EEE) * is supported by looking at the MMD registers 3.20 and 7.60/61 * and it programs the MMD register 3.0 setting the "Clock stop enable" * bit if required. */ int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) { if (!phydev->drv) return -EIO; /* According to 802.3az,the EEE is supported only in full duplex-mode. */ if (phydev->duplex == DUPLEX_FULL) { __ETHTOOL_DECLARE_LINK_MODE_MASK(common); __ETHTOOL_DECLARE_LINK_MODE_MASK(lp); __ETHTOOL_DECLARE_LINK_MODE_MASK(adv); int eee_lp, eee_cap, eee_adv; int status; u32 cap; /* Read phy status to properly get the right settings */ status = phy_read_status(phydev); if (status) return status; /* First check if the EEE ability is supported */ eee_cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); if (eee_cap <= 0) goto eee_exit_err; cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); if (!cap) goto eee_exit_err; /* Check which link settings negotiated and verify it in * the EEE advertising registers. */ eee_lp = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE); if (eee_lp <= 0) goto eee_exit_err; eee_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); if (eee_adv <= 0) goto eee_exit_err; mmd_eee_adv_to_linkmode(adv, eee_adv); mmd_eee_adv_to_linkmode(lp, eee_lp); linkmode_and(common, adv, lp); if (!phy_check_valid(phydev->speed, phydev->duplex, common)) goto eee_exit_err; if (clk_stop_enable) /* Configure the PHY to stop receiving xMII * clock while it is signaling LPI. */ phy_set_bits_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, MDIO_PCS_CTRL1_CLKSTOP_EN); return 0; /* EEE supported */ } eee_exit_err: return -EPROTONOSUPPORT; } EXPORT_SYMBOL(phy_init_eee); /** * phy_get_eee_err - report the EEE wake error count * @phydev: target phy_device struct * * Description: it is to report the number of time where the PHY * failed to complete its normal wake sequence. */ int phy_get_eee_err(struct phy_device *phydev) { if (!phydev->drv) return -EIO; return phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR); } EXPORT_SYMBOL(phy_get_eee_err); /** * phy_ethtool_get_eee - get EEE supported and status * @phydev: target phy_device struct * @data: ethtool_eee data * * Description: it reportes the Supported/Advertisement/LP Advertisement * capabilities. */ int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) { int val; if (!phydev->drv) return -EIO; /* Get Supported EEE */ val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); if (val < 0) return val; data->supported = mmd_eee_cap_to_ethtool_sup_t(val); /* Get advertisement EEE */ val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); if (val < 0) return val; data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); data->eee_enabled = !!data->advertised; /* Get LP advertisement EEE */ val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE); if (val < 0) return val; data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); data->eee_active = !!(data->advertised & data->lp_advertised); return 0; } EXPORT_SYMBOL(phy_ethtool_get_eee); /** * phy_ethtool_set_eee - set EEE supported and status * @phydev: target phy_device struct * @data: ethtool_eee data * * Description: it is to program the Advertisement EEE register. */ int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) { int cap, old_adv, adv = 0, ret; if (!phydev->drv) return -EIO; /* Get Supported EEE */ cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); if (cap < 0) return cap; old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); if (old_adv < 0) return old_adv; if (data->eee_enabled) { adv = !data->advertised ? cap : ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap; /* Mask prohibited EEE modes */ adv &= ~phydev->eee_broken_modes; } if (old_adv != adv) { ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv); if (ret < 0) return ret; /* Restart autonegotiation so the new modes get sent to the * link partner. */ if (phydev->autoneg == AUTONEG_ENABLE) { ret = phy_restart_aneg(phydev); if (ret < 0) return ret; } } return 0; } EXPORT_SYMBOL(phy_ethtool_set_eee); /** * phy_ethtool_set_wol - Configure Wake On LAN * * @phydev: target phy_device struct * @wol: Configuration requested */ int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { if (phydev->drv && phydev->drv->set_wol) return phydev->drv->set_wol(phydev, wol); return -EOPNOTSUPP; } EXPORT_SYMBOL(phy_ethtool_set_wol); /** * phy_ethtool_get_wol - Get the current Wake On LAN configuration * * @phydev: target phy_device struct * @wol: Store the current configuration here */ void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { if (phydev->drv && phydev->drv->get_wol) phydev->drv->get_wol(phydev, wol); } EXPORT_SYMBOL(phy_ethtool_get_wol); int phy_ethtool_get_link_ksettings(struct net_device *ndev, struct ethtool_link_ksettings *cmd) { struct phy_device *phydev = ndev->phydev; if (!phydev) return -ENODEV; phy_ethtool_ksettings_get(phydev, cmd); return 0; } EXPORT_SYMBOL(phy_ethtool_get_link_ksettings); int phy_ethtool_set_link_ksettings(struct net_device *ndev, const struct ethtool_link_ksettings *cmd) { struct phy_device *phydev = ndev->phydev; if (!phydev) return -ENODEV; return phy_ethtool_ksettings_set(phydev, cmd); } EXPORT_SYMBOL(phy_ethtool_set_link_ksettings); /** * phy_ethtool_nway_reset - Restart auto negotiation * @ndev: Network device to restart autoneg for */ int phy_ethtool_nway_reset(struct net_device *ndev) { struct phy_device *phydev = ndev->phydev; if (!phydev) return -ENODEV; if (!phydev->drv) return -EIO; return phy_restart_aneg(phydev); } EXPORT_SYMBOL(phy_ethtool_nway_reset);
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