| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Andy Fleming | 2034 | 25.48% | 7 | 4.61% |
| Andrew Lunn | 1735 | 21.73% | 20 | 13.16% |
| Florian Fainelli | 674 | 8.44% | 23 | 15.13% |
| Grant C. Likely | 344 | 4.31% | 2 | 1.32% |
| Heiner Kallweit | 338 | 4.23% | 7 | 4.61% |
| David Daney | 329 | 4.12% | 3 | 1.97% |
| Russell King | 279 | 3.49% | 9 | 5.92% |
| Jerome Brunet | 238 | 2.98% | 3 | 1.97% |
| Woojung Huh | 195 | 2.44% | 3 | 1.97% |
| Lin Yun Sheng | 169 | 2.12% | 1 | 0.66% |
| Shaohui Xie | 151 | 1.89% | 2 | 1.32% |
| Sergei Shtylyov | 149 | 1.87% | 9 | 5.92% |
| Christian Hohnstaedt | 114 | 1.43% | 1 | 0.66% |
| Sebastian Hesselbarth | 112 | 1.40% | 3 | 1.97% |
| Anton Vorontsov | 106 | 1.33% | 4 | 2.63% |
| Vitaly Bordug | 102 | 1.28% | 1 | 0.66% |
| Simon Horman | 91 | 1.14% | 1 | 0.66% |
| Trent Piepho | 81 | 1.01% | 2 | 1.32% |
| Sascha Hauer | 68 | 0.85% | 2 | 1.32% |
| Richard Leitner | 62 | 0.78% | 1 | 0.66% |
| Giuseppe Cavallaro | 60 | 0.75% | 2 | 1.32% |
| Romain Perier | 58 | 0.73% | 1 | 0.66% |
| Paul Gortmaker | 58 | 0.73% | 1 | 0.66% |
| Kevin Hao | 54 | 0.68% | 1 | 0.66% |
| Jiri Pirko | 44 | 0.55% | 1 | 0.66% |
| Timur Tabi | 40 | 0.50% | 1 | 0.66% |
| Jeff Garzik | 29 | 0.36% | 2 | 1.32% |
| Grygorii Strashko | 28 | 0.35% | 1 | 0.66% |
| Alexandre Belloni | 25 | 0.31% | 1 | 0.66% |
| Cristian Bercaru | 19 | 0.24% | 1 | 0.66% |
| Olaf Hering | 15 | 0.19% | 1 | 0.66% |
| Richard Cochran | 14 | 0.18% | 1 | 0.66% |
| Petr Malat | 14 | 0.18% | 1 | 0.66% |
| Marc Kleine-Budde | 12 | 0.15% | 1 | 0.66% |
| Randy Dunlap | 10 | 0.13% | 3 | 1.97% |
| Johan Hovold | 10 | 0.13% | 1 | 0.66% |
| Kay Sievers | 9 | 0.11% | 1 | 0.66% |
| Mao Wenan | 9 | 0.11% | 1 | 0.66% |
| Sjoerd Simons | 8 | 0.10% | 1 | 0.66% |
| Jiri Slaby | 8 | 0.10% | 1 | 0.66% |
| David S. Miller | 8 | 0.10% | 2 | 1.32% |
| Zach Brown | 8 | 0.10% | 1 | 0.66% |
| Joe Perches | 8 | 0.10% | 1 | 0.66% |
| David Woodhouse | 7 | 0.09% | 1 | 0.66% |
| Geert Uytterhoeven | 6 | 0.08% | 2 | 1.32% |
| Matt Carlson | 6 | 0.08% | 2 | 1.32% |
| Kunihiko Hayashi | 6 | 0.08% | 1 | 0.66% |
| Madalin Bucur | 5 | 0.06% | 1 | 0.66% |
| Nate Case | 5 | 0.06% | 1 | 0.66% |
| Uwe Kleine-König | 5 | 0.06% | 1 | 0.66% |
| Shengzhou Liu | 5 | 0.06% | 1 | 0.66% |
| Adrian Bunk | 5 | 0.06% | 1 | 0.66% |
| Giulio Benetti | 3 | 0.04% | 1 | 0.66% |
| Ingo van Lil | 3 | 0.04% | 1 | 0.66% |
| Stephen Hemminger | 2 | 0.03% | 1 | 0.66% |
| Ezequiel García | 2 | 0.03% | 1 | 0.66% |
| Olof Johansson | 1 | 0.01% | 1 | 0.66% |
| Eric Sesterhenn / Snakebyte | 1 | 0.01% | 1 | 0.66% |
| Robert P. J. Day | 1 | 0.01% | 1 | 0.66% |
| Mugunthan V N | 1 | 0.01% | 1 | 0.66% |
| Lucas De Marchi | 1 | 0.01% | 1 | 0.66% |
| Total | 7984 | 152 |
/* Framework for finding and configuring PHYs. * Also contains generic PHY driver * * 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. * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/kernel.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/mm.h> #include <linux/module.h> #include <linux/mii.h> #include <linux/ethtool.h> #include <linux/bitmap.h> #include <linux/phy.h> #include <linux/phy_led_triggers.h> #include <linux/mdio.h> #include <linux/io.h> #include <linux/uaccess.h> #include <linux/of.h> #include <asm/irq.h> MODULE_DESCRIPTION("PHY library"); MODULE_AUTHOR("Andy Fleming"); MODULE_LICENSE("GPL"); __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_features) __ro_after_init; EXPORT_SYMBOL_GPL(phy_basic_features); __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1_features) __ro_after_init; EXPORT_SYMBOL_GPL(phy_basic_t1_features); __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_features) __ro_after_init; EXPORT_SYMBOL_GPL(phy_gbit_features); __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_fibre_features) __ro_after_init; EXPORT_SYMBOL_GPL(phy_gbit_fibre_features); __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_all_ports_features) __ro_after_init; EXPORT_SYMBOL_GPL(phy_gbit_all_ports_features); __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_features) __ro_after_init; EXPORT_SYMBOL_GPL(phy_10gbit_features); static const int phy_basic_ports_array[] = { ETHTOOL_LINK_MODE_Autoneg_BIT, ETHTOOL_LINK_MODE_TP_BIT, ETHTOOL_LINK_MODE_MII_BIT, }; static const int phy_fibre_port_array[] = { ETHTOOL_LINK_MODE_FIBRE_BIT, }; static const int phy_all_ports_features_array[] = { ETHTOOL_LINK_MODE_Autoneg_BIT, ETHTOOL_LINK_MODE_TP_BIT, ETHTOOL_LINK_MODE_MII_BIT, ETHTOOL_LINK_MODE_FIBRE_BIT, ETHTOOL_LINK_MODE_AUI_BIT, ETHTOOL_LINK_MODE_BNC_BIT, ETHTOOL_LINK_MODE_Backplane_BIT, }; static const int phy_10_100_features_array[] = { ETHTOOL_LINK_MODE_10baseT_Half_BIT, ETHTOOL_LINK_MODE_10baseT_Full_BIT, ETHTOOL_LINK_MODE_100baseT_Half_BIT, ETHTOOL_LINK_MODE_100baseT_Full_BIT, }; static const int phy_basic_t1_features_array[] = { ETHTOOL_LINK_MODE_TP_BIT, ETHTOOL_LINK_MODE_100baseT_Full_BIT, }; static const int phy_gbit_features_array[] = { ETHTOOL_LINK_MODE_1000baseT_Half_BIT, ETHTOOL_LINK_MODE_1000baseT_Full_BIT, }; static const int phy_10gbit_features_array[] = { ETHTOOL_LINK_MODE_10000baseT_Full_BIT, }; __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_full_features) __ro_after_init; EXPORT_SYMBOL_GPL(phy_10gbit_full_features); static const int phy_10gbit_full_features_array[] = { ETHTOOL_LINK_MODE_10baseT_Full_BIT, ETHTOOL_LINK_MODE_100baseT_Full_BIT, ETHTOOL_LINK_MODE_1000baseT_Full_BIT, ETHTOOL_LINK_MODE_10000baseT_Full_BIT, }; static void features_init(void) { /* 10/100 half/full*/ linkmode_set_bit_array(phy_basic_ports_array, ARRAY_SIZE(phy_basic_ports_array), phy_basic_features); linkmode_set_bit_array(phy_10_100_features_array, ARRAY_SIZE(phy_10_100_features_array), phy_basic_features); /* 100 full, TP */ linkmode_set_bit_array(phy_basic_t1_features_array, ARRAY_SIZE(phy_basic_t1_features_array), phy_basic_t1_features); /* 10/100 half/full + 1000 half/full */ linkmode_set_bit_array(phy_basic_ports_array, ARRAY_SIZE(phy_basic_ports_array), phy_gbit_features); linkmode_set_bit_array(phy_10_100_features_array, ARRAY_SIZE(phy_10_100_features_array), phy_gbit_features); linkmode_set_bit_array(phy_gbit_features_array, ARRAY_SIZE(phy_gbit_features_array), phy_gbit_features); /* 10/100 half/full + 1000 half/full + fibre*/ linkmode_set_bit_array(phy_basic_ports_array, ARRAY_SIZE(phy_basic_ports_array), phy_gbit_fibre_features); linkmode_set_bit_array(phy_10_100_features_array, ARRAY_SIZE(phy_10_100_features_array), phy_gbit_fibre_features); linkmode_set_bit_array(phy_gbit_features_array, ARRAY_SIZE(phy_gbit_features_array), phy_gbit_fibre_features); linkmode_set_bit_array(phy_fibre_port_array, ARRAY_SIZE(phy_fibre_port_array), phy_gbit_fibre_features); /* 10/100 half/full + 1000 half/full + TP/MII/FIBRE/AUI/BNC/Backplane*/ linkmode_set_bit_array(phy_all_ports_features_array, ARRAY_SIZE(phy_all_ports_features_array), phy_gbit_all_ports_features); linkmode_set_bit_array(phy_10_100_features_array, ARRAY_SIZE(phy_10_100_features_array), phy_gbit_all_ports_features); linkmode_set_bit_array(phy_gbit_features_array, ARRAY_SIZE(phy_gbit_features_array), phy_gbit_all_ports_features); /* 10/100 half/full + 1000 half/full + 10G full*/ linkmode_set_bit_array(phy_all_ports_features_array, ARRAY_SIZE(phy_all_ports_features_array), phy_10gbit_features); linkmode_set_bit_array(phy_10_100_features_array, ARRAY_SIZE(phy_10_100_features_array), phy_10gbit_features); linkmode_set_bit_array(phy_gbit_features_array, ARRAY_SIZE(phy_gbit_features_array), phy_10gbit_features); linkmode_set_bit_array(phy_10gbit_features_array, ARRAY_SIZE(phy_10gbit_features_array), phy_10gbit_features); /* 10/100/1000/10G full */ linkmode_set_bit_array(phy_all_ports_features_array, ARRAY_SIZE(phy_all_ports_features_array), phy_10gbit_full_features); linkmode_set_bit_array(phy_10gbit_full_features_array, ARRAY_SIZE(phy_10gbit_full_features_array), phy_10gbit_full_features); } void phy_device_free(struct phy_device *phydev) { put_device(&phydev->mdio.dev); } EXPORT_SYMBOL(phy_device_free); static void phy_mdio_device_free(struct mdio_device *mdiodev) { struct phy_device *phydev; phydev = container_of(mdiodev, struct phy_device, mdio); phy_device_free(phydev); } static void phy_device_release(struct device *dev) { kfree(to_phy_device(dev)); } static void phy_mdio_device_remove(struct mdio_device *mdiodev) { struct phy_device *phydev; phydev = container_of(mdiodev, struct phy_device, mdio); phy_device_remove(phydev); } static struct phy_driver genphy_driver; extern struct phy_driver genphy_10g_driver; static LIST_HEAD(phy_fixup_list); static DEFINE_MUTEX(phy_fixup_lock); #ifdef CONFIG_PM static bool mdio_bus_phy_may_suspend(struct phy_device *phydev) { struct device_driver *drv = phydev->mdio.dev.driver; struct phy_driver *phydrv = to_phy_driver(drv); struct net_device *netdev = phydev->attached_dev; if (!drv || !phydrv->suspend) return false; /* PHY not attached? May suspend if the PHY has not already been * suspended as part of a prior call to phy_disconnect() -> * phy_detach() -> phy_suspend() because the parent netdev might be the * MDIO bus driver and clock gated at this point. */ if (!netdev) return !phydev->suspended; if (netdev->wol_enabled) return false; /* As long as not all affected network drivers support the * wol_enabled flag, let's check for hints that WoL is enabled. * Don't suspend PHY if the attached netdev parent may wake up. * The parent may point to a PCI device, as in tg3 driver. */ if (netdev->dev.parent && device_may_wakeup(netdev->dev.parent)) return false; /* Also don't suspend PHY if the netdev itself may wakeup. This * is the case for devices w/o underlaying pwr. mgmt. aware bus, * e.g. SoC devices. */ if (device_may_wakeup(&netdev->dev)) return false; return true; } static int mdio_bus_phy_suspend(struct device *dev) { struct phy_device *phydev = to_phy_device(dev); /* We must stop the state machine manually, otherwise it stops out of * control, possibly with the phydev->lock held. Upon resume, netdev * may call phy routines that try to grab the same lock, and that may * lead to a deadlock. */ if (phydev->attached_dev && phydev->adjust_link) phy_stop_machine(phydev); if (!mdio_bus_phy_may_suspend(phydev)) return 0; return phy_suspend(phydev); } static int mdio_bus_phy_resume(struct device *dev) { struct phy_device *phydev = to_phy_device(dev); int ret; if (!mdio_bus_phy_may_suspend(phydev)) goto no_resume; ret = phy_resume(phydev); if (ret < 0) return ret; no_resume: if (phydev->attached_dev && phydev->adjust_link) phy_start_machine(phydev); return 0; } static int mdio_bus_phy_restore(struct device *dev) { struct phy_device *phydev = to_phy_device(dev); struct net_device *netdev = phydev->attached_dev; int ret; if (!netdev) return 0; ret = phy_init_hw(phydev); if (ret < 0) return ret; if (phydev->attached_dev && phydev->adjust_link) phy_start_machine(phydev); return 0; } static const struct dev_pm_ops mdio_bus_phy_pm_ops = { .suspend = mdio_bus_phy_suspend, .resume = mdio_bus_phy_resume, .freeze = mdio_bus_phy_suspend, .thaw = mdio_bus_phy_resume, .restore = mdio_bus_phy_restore, }; #define MDIO_BUS_PHY_PM_OPS (&mdio_bus_phy_pm_ops) #else #define MDIO_BUS_PHY_PM_OPS NULL #endif /* CONFIG_PM */ /** * phy_register_fixup - creates a new phy_fixup and adds it to the list * @bus_id: A string which matches phydev->mdio.dev.bus_id (or PHY_ANY_ID) * @phy_uid: Used to match against phydev->phy_id (the UID of the PHY) * It can also be PHY_ANY_UID * @phy_uid_mask: Applied to phydev->phy_id and fixup->phy_uid before * comparison * @run: The actual code to be run when a matching PHY is found */ int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask, int (*run)(struct phy_device *)) { struct phy_fixup *fixup = kzalloc(sizeof(*fixup), GFP_KERNEL); if (!fixup) return -ENOMEM; strlcpy(fixup->bus_id, bus_id, sizeof(fixup->bus_id)); fixup->phy_uid = phy_uid; fixup->phy_uid_mask = phy_uid_mask; fixup->run = run; mutex_lock(&phy_fixup_lock); list_add_tail(&fixup->list, &phy_fixup_list); mutex_unlock(&phy_fixup_lock); return 0; } EXPORT_SYMBOL(phy_register_fixup); /* Registers a fixup to be run on any PHY with the UID in phy_uid */ int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask, int (*run)(struct phy_device *)) { return phy_register_fixup(PHY_ANY_ID, phy_uid, phy_uid_mask, run); } EXPORT_SYMBOL(phy_register_fixup_for_uid); /* Registers a fixup to be run on the PHY with id string bus_id */ int phy_register_fixup_for_id(const char *bus_id, int (*run)(struct phy_device *)) { return phy_register_fixup(bus_id, PHY_ANY_UID, 0xffffffff, run); } EXPORT_SYMBOL(phy_register_fixup_for_id); /** * phy_unregister_fixup - remove a phy_fixup from the list * @bus_id: A string matches fixup->bus_id (or PHY_ANY_ID) in phy_fixup_list * @phy_uid: A phy id matches fixup->phy_id (or PHY_ANY_UID) in phy_fixup_list * @phy_uid_mask: Applied to phy_uid and fixup->phy_uid before comparison */ int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask) { struct list_head *pos, *n; struct phy_fixup *fixup; int ret; ret = -ENODEV; mutex_lock(&phy_fixup_lock); list_for_each_safe(pos, n, &phy_fixup_list) { fixup = list_entry(pos, struct phy_fixup, list); if ((!strcmp(fixup->bus_id, bus_id)) && ((fixup->phy_uid & phy_uid_mask) == (phy_uid & phy_uid_mask))) { list_del(&fixup->list); kfree(fixup); ret = 0; break; } } mutex_unlock(&phy_fixup_lock); return ret; } EXPORT_SYMBOL(phy_unregister_fixup); /* Unregisters a fixup of any PHY with the UID in phy_uid */ int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask) { return phy_unregister_fixup(PHY_ANY_ID, phy_uid, phy_uid_mask); } EXPORT_SYMBOL(phy_unregister_fixup_for_uid); /* Unregisters a fixup of the PHY with id string bus_id */ int phy_unregister_fixup_for_id(const char *bus_id) { return phy_unregister_fixup(bus_id, PHY_ANY_UID, 0xffffffff); } EXPORT_SYMBOL(phy_unregister_fixup_for_id); /* Returns 1 if fixup matches phydev in bus_id and phy_uid. * Fixups can be set to match any in one or more fields. */ static int phy_needs_fixup(struct phy_device *phydev, struct phy_fixup *fixup) { if (strcmp(fixup->bus_id, phydev_name(phydev)) != 0) if (strcmp(fixup->bus_id, PHY_ANY_ID) != 0) return 0; if ((fixup->phy_uid & fixup->phy_uid_mask) != (phydev->phy_id & fixup->phy_uid_mask)) if (fixup->phy_uid != PHY_ANY_UID) return 0; return 1; } /* Runs any matching fixups for this phydev */ static int phy_scan_fixups(struct phy_device *phydev) { struct phy_fixup *fixup; mutex_lock(&phy_fixup_lock); list_for_each_entry(fixup, &phy_fixup_list, list) { if (phy_needs_fixup(phydev, fixup)) { int err = fixup->run(phydev); if (err < 0) { mutex_unlock(&phy_fixup_lock); return err; } phydev->has_fixups = true; } } mutex_unlock(&phy_fixup_lock); return 0; } static int phy_bus_match(struct device *dev, struct device_driver *drv) { struct phy_device *phydev = to_phy_device(dev); struct phy_driver *phydrv = to_phy_driver(drv); const int num_ids = ARRAY_SIZE(phydev->c45_ids.device_ids); int i; if (!(phydrv->mdiodrv.flags & MDIO_DEVICE_IS_PHY)) return 0; if (phydrv->match_phy_device) return phydrv->match_phy_device(phydev); if (phydev->is_c45) { for (i = 1; i < num_ids; i++) { if (!(phydev->c45_ids.devices_in_package & (1 << i))) continue; if ((phydrv->phy_id & phydrv->phy_id_mask) == (phydev->c45_ids.device_ids[i] & phydrv->phy_id_mask)) return 1; } return 0; } else { return (phydrv->phy_id & phydrv->phy_id_mask) == (phydev->phy_id & phydrv->phy_id_mask); } } static ssize_t phy_id_show(struct device *dev, struct device_attribute *attr, char *buf) { struct phy_device *phydev = to_phy_device(dev); return sprintf(buf, "0x%.8lx\n", (unsigned long)phydev->phy_id); } static DEVICE_ATTR_RO(phy_id); static ssize_t phy_interface_show(struct device *dev, struct device_attribute *attr, char *buf) { struct phy_device *phydev = to_phy_device(dev); const char *mode = NULL; if (phy_is_internal(phydev)) mode = "internal"; else mode = phy_modes(phydev->interface); return sprintf(buf, "%s\n", mode); } static DEVICE_ATTR_RO(phy_interface); static ssize_t phy_has_fixups_show(struct device *dev, struct device_attribute *attr, char *buf) { struct phy_device *phydev = to_phy_device(dev); return sprintf(buf, "%d\n", phydev->has_fixups); } static DEVICE_ATTR_RO(phy_has_fixups); static struct attribute *phy_dev_attrs[] = { &dev_attr_phy_id.attr, &dev_attr_phy_interface.attr, &dev_attr_phy_has_fixups.attr, NULL, }; ATTRIBUTE_GROUPS(phy_dev); static const struct device_type mdio_bus_phy_type = { .name = "PHY", .groups = phy_dev_groups, .release = phy_device_release, .pm = MDIO_BUS_PHY_PM_OPS, }; struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id, bool is_c45, struct phy_c45_device_ids *c45_ids) { struct phy_device *dev; struct mdio_device *mdiodev; /* We allocate the device, and initialize the default values */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) return ERR_PTR(-ENOMEM); mdiodev = &dev->mdio; mdiodev->dev.parent = &bus->dev; mdiodev->dev.bus = &mdio_bus_type; mdiodev->dev.type = &mdio_bus_phy_type; mdiodev->bus = bus; mdiodev->bus_match = phy_bus_match; mdiodev->addr = addr; mdiodev->flags = MDIO_DEVICE_FLAG_PHY; mdiodev->device_free = phy_mdio_device_free; mdiodev->device_remove = phy_mdio_device_remove; dev->speed = 0; dev->duplex = -1; dev->pause = 0; dev->asym_pause = 0; dev->link = 0; dev->interface = PHY_INTERFACE_MODE_GMII; dev->autoneg = AUTONEG_ENABLE; dev->is_c45 = is_c45; dev->phy_id = phy_id; if (c45_ids) dev->c45_ids = *c45_ids; dev->irq = bus->irq[addr]; dev_set_name(&mdiodev->dev, PHY_ID_FMT, bus->id, addr); dev->state = PHY_DOWN; mutex_init(&dev->lock); INIT_DELAYED_WORK(&dev->state_queue, phy_state_machine); INIT_WORK(&dev->phy_queue, phy_change_work); /* Request the appropriate module unconditionally; don't * bother trying to do so only if it isn't already loaded, * because that gets complicated. A hotplug event would have * done an unconditional modprobe anyway. * We don't do normal hotplug because it won't work for MDIO * -- because it relies on the device staying around for long * enough for the driver to get loaded. With MDIO, the NIC * driver will get bored and give up as soon as it finds that * there's no driver _already_ loaded. */ request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT, MDIO_ID_ARGS(phy_id)); device_initialize(&mdiodev->dev); return dev; } EXPORT_SYMBOL(phy_device_create); /* get_phy_c45_devs_in_pkg - reads a MMD's devices in package registers. * @bus: the target MII bus * @addr: PHY address on the MII bus * @dev_addr: MMD address in the PHY. * @devices_in_package: where to store the devices in package information. * * Description: reads devices in package registers of a MMD at @dev_addr * from PHY at @addr on @bus. * * Returns: 0 on success, -EIO on failure. */ static int get_phy_c45_devs_in_pkg(struct mii_bus *bus, int addr, int dev_addr, u32 *devices_in_package) { int phy_reg, reg_addr; reg_addr = MII_ADDR_C45 | dev_addr << 16 | MDIO_DEVS2; phy_reg = mdiobus_read(bus, addr, reg_addr); if (phy_reg < 0) return -EIO; *devices_in_package = (phy_reg & 0xffff) << 16; reg_addr = MII_ADDR_C45 | dev_addr << 16 | MDIO_DEVS1; phy_reg = mdiobus_read(bus, addr, reg_addr); if (phy_reg < 0) return -EIO; *devices_in_package |= (phy_reg & 0xffff); return 0; } /** * get_phy_c45_ids - reads the specified addr for its 802.3-c45 IDs. * @bus: the target MII bus * @addr: PHY address on the MII bus * @phy_id: where to store the ID retrieved. * @c45_ids: where to store the c45 ID information. * * If the PHY devices-in-package appears to be valid, it and the * corresponding identifiers are stored in @c45_ids, zero is stored * in @phy_id. Otherwise 0xffffffff is stored in @phy_id. Returns * zero on success. * */ static int get_phy_c45_ids(struct mii_bus *bus, int addr, u32 *phy_id, struct phy_c45_device_ids *c45_ids) { int phy_reg; int i, reg_addr; const int num_ids = ARRAY_SIZE(c45_ids->device_ids); u32 *devs = &c45_ids->devices_in_package; /* Find first non-zero Devices In package. Device zero is reserved * for 802.3 c45 complied PHYs, so don't probe it at first. */ for (i = 1; i < num_ids && *devs == 0; i++) { phy_reg = get_phy_c45_devs_in_pkg(bus, addr, i, devs); if (phy_reg < 0) return -EIO; if ((*devs & 0x1fffffff) == 0x1fffffff) { /* If mostly Fs, there is no device there, * then let's continue to probe more, as some * 10G PHYs have zero Devices In package, * e.g. Cortina CS4315/CS4340 PHY. */ phy_reg = get_phy_c45_devs_in_pkg(bus, addr, 0, devs); if (phy_reg < 0) return -EIO; /* no device there, let's get out of here */ if ((*devs & 0x1fffffff) == 0x1fffffff) { *phy_id = 0xffffffff; return 0; } else { break; } } } /* Now probe Device Identifiers for each device present. */ for (i = 1; i < num_ids; i++) { if (!(c45_ids->devices_in_package & (1 << i))) continue; reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID1; phy_reg = mdiobus_read(bus, addr, reg_addr); if (phy_reg < 0) return -EIO; c45_ids->device_ids[i] = (phy_reg & 0xffff) << 16; reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID2; phy_reg = mdiobus_read(bus, addr, reg_addr); if (phy_reg < 0) return -EIO; c45_ids->device_ids[i] |= (phy_reg & 0xffff); } *phy_id = 0; return 0; } /** * get_phy_id - reads the specified addr for its ID. * @bus: the target MII bus * @addr: PHY address on the MII bus * @phy_id: where to store the ID retrieved. * @is_c45: If true the PHY uses the 802.3 clause 45 protocol * @c45_ids: where to store the c45 ID information. * * Description: In the case of a 802.3-c22 PHY, reads the ID registers * of the PHY at @addr on the @bus, stores it in @phy_id and returns * zero on success. * * In the case of a 802.3-c45 PHY, get_phy_c45_ids() is invoked, and * its return value is in turn returned. * */ static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id, bool is_c45, struct phy_c45_device_ids *c45_ids) { int phy_reg; if (is_c45) return get_phy_c45_ids(bus, addr, phy_id, c45_ids); /* Grab the bits from PHYIR1, and put them in the upper half */ phy_reg = mdiobus_read(bus, addr, MII_PHYSID1); if (phy_reg < 0) { /* if there is no device, return without an error so scanning * the bus works properly */ if (phy_reg == -EIO || phy_reg == -ENODEV) { *phy_id = 0xffffffff; return 0; } return -EIO; } *phy_id = (phy_reg & 0xffff) << 16; /* Grab the bits from PHYIR2, and put them in the lower half */ phy_reg = mdiobus_read(bus, addr, MII_PHYSID2); if (phy_reg < 0) return -EIO; *phy_id |= (phy_reg & 0xffff); return 0; } /** * get_phy_device - reads the specified PHY device and returns its @phy_device * struct * @bus: the target MII bus * @addr: PHY address on the MII bus * @is_c45: If true the PHY uses the 802.3 clause 45 protocol * * Description: Reads the ID registers of the PHY at @addr on the * @bus, then allocates and returns the phy_device to represent it. */ struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45) { struct phy_c45_device_ids c45_ids = {0}; u32 phy_id = 0; int r; r = get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids); if (r) return ERR_PTR(r); /* If the phy_id is mostly Fs, there is no device there */ if ((phy_id & 0x1fffffff) == 0x1fffffff) return ERR_PTR(-ENODEV); return phy_device_create(bus, addr, phy_id, is_c45, &c45_ids); } EXPORT_SYMBOL(get_phy_device); /** * phy_device_register - Register the phy device on the MDIO bus * @phydev: phy_device structure to be added to the MDIO bus */ int phy_device_register(struct phy_device *phydev) { int err; err = mdiobus_register_device(&phydev->mdio); if (err) return err; /* Deassert the reset signal */ phy_device_reset(phydev, 0); /* Run all of the fixups for this PHY */ err = phy_scan_fixups(phydev); if (err) { pr_err("PHY %d failed to initialize\n", phydev->mdio.addr); goto out; } err = device_add(&phydev->mdio.dev); if (err) { pr_err("PHY %d failed to add\n", phydev->mdio.addr); goto out; } return 0; out: /* Assert the reset signal */ phy_device_reset(phydev, 1); mdiobus_unregister_device(&phydev->mdio); return err; } EXPORT_SYMBOL(phy_device_register); /** * phy_device_remove - Remove a previously registered phy device from the MDIO bus * @phydev: phy_device structure to remove * * This doesn't free the phy_device itself, it merely reverses the effects * of phy_device_register(). Use phy_device_free() to free the device * after calling this function. */ void phy_device_remove(struct phy_device *phydev) { device_del(&phydev->mdio.dev); /* Assert the reset signal */ phy_device_reset(phydev, 1); mdiobus_unregister_device(&phydev->mdio); } EXPORT_SYMBOL(phy_device_remove); /** * phy_find_first - finds the first PHY device on the bus * @bus: the target MII bus */ struct phy_device *phy_find_first(struct mii_bus *bus) { struct phy_device *phydev; int addr; for (addr = 0; addr < PHY_MAX_ADDR; addr++) { phydev = mdiobus_get_phy(bus, addr); if (phydev) return phydev; } return NULL; } EXPORT_SYMBOL(phy_find_first); static void phy_link_change(struct phy_device *phydev, bool up, bool do_carrier) { struct net_device *netdev = phydev->attached_dev; if (do_carrier) { if (up) netif_carrier_on(netdev); else netif_carrier_off(netdev); } phydev->adjust_link(netdev); } /** * phy_prepare_link - prepares the PHY layer to monitor link status * @phydev: target phy_device struct * @handler: callback function for link status change notifications * * Description: Tells the PHY infrastructure to handle the * gory details on monitoring link status (whether through * polling or an interrupt), and to call back to the * connected device driver when the link status changes. * If you want to monitor your own link state, don't call * this function. */ static void phy_prepare_link(struct phy_device *phydev, void (*handler)(struct net_device *)) { phydev->adjust_link = handler; } /** * phy_connect_direct - connect an ethernet device to a specific phy_device * @dev: the network device to connect * @phydev: the pointer to the phy device * @handler: callback function for state change notifications * @interface: PHY device's interface */ int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, void (*handler)(struct net_device *), phy_interface_t interface) { int rc; rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface); if (rc) return rc; phy_prepare_link(phydev, handler); phy_start_machine(phydev); if (phydev->irq > 0) phy_start_interrupts(phydev); return 0; } EXPORT_SYMBOL(phy_connect_direct); /** * phy_connect - connect an ethernet device to a PHY device * @dev: the network device to connect * @bus_id: the id string of the PHY device to connect * @handler: callback function for state change notifications * @interface: PHY device's interface * * Description: Convenience function for connecting ethernet * devices to PHY devices. The default behavior is for * the PHY infrastructure to handle everything, and only notify * the connected driver when the link status changes. If you * don't want, or can't use the provided functionality, you may * choose to call only the subset of functions which provide * the desired functionality. */ struct phy_device *phy_connect(struct net_device *dev, const char *bus_id, void (*handler)(struct net_device *), phy_interface_t interface) { struct phy_device *phydev; struct device *d; int rc; /* Search the list of PHY devices on the mdio bus for the * PHY with the requested name */ d = bus_find_device_by_name(&mdio_bus_type, NULL, bus_id); if (!d) { pr_err("PHY %s not found\n", bus_id); return ERR_PTR(-ENODEV); } phydev = to_phy_device(d); rc = phy_connect_direct(dev, phydev, handler, interface); put_device(d); if (rc) return ERR_PTR(rc); return phydev; } EXPORT_SYMBOL(phy_connect); /** * phy_disconnect - disable interrupts, stop state machine, and detach a PHY * device * @phydev: target phy_device struct */ void phy_disconnect(struct phy_device *phydev) { if (phydev->irq > 0) phy_stop_interrupts(phydev); phy_stop_machine(phydev); phydev->adjust_link = NULL; phy_detach(phydev); } EXPORT_SYMBOL(phy_disconnect); /** * phy_poll_reset - Safely wait until a PHY reset has properly completed * @phydev: The PHY device to poll * * Description: According to IEEE 802.3, Section 2, Subsection 22.2.4.1.1, as * published in 2008, a PHY reset may take up to 0.5 seconds. The MII BMCR * register must be polled until the BMCR_RESET bit clears. * * Furthermore, any attempts to write to PHY registers may have no effect * or even generate MDIO bus errors until this is complete. * * Some PHYs (such as the Marvell 88E1111) don't entirely conform to the * standard and do not fully reset after the BMCR_RESET bit is set, and may * even *REQUIRE* a soft-reset to properly restart autonegotiation. In an * effort to support such broken PHYs, this function is separate from the * standard phy_init_hw() which will zero all the other bits in the BMCR * and reapply all driver-specific and board-specific fixups. */ static int phy_poll_reset(struct phy_device *phydev) { /* Poll until the reset bit clears (50ms per retry == 0.6 sec) */ unsigned int retries = 12; int ret; do { msleep(50); ret = phy_read(phydev, MII_BMCR); if (ret < 0) return ret; } while (ret & BMCR_RESET && --retries); if (ret & BMCR_RESET) return -ETIMEDOUT; /* Some chips (smsc911x) may still need up to another 1ms after the * BMCR_RESET bit is cleared before they are usable. */ msleep(1); return 0; } int phy_init_hw(struct phy_device *phydev) { int ret = 0; /* Deassert the reset signal */ phy_device_reset(phydev, 0); if (!phydev->drv || !phydev->drv->config_init) return 0; if (phydev->drv->soft_reset) ret = phydev->drv->soft_reset(phydev); if (ret < 0) return ret; ret = phy_scan_fixups(phydev); if (ret < 0) return ret; return phydev->drv->config_init(phydev); } EXPORT_SYMBOL(phy_init_hw); void phy_attached_info(struct phy_device *phydev) { phy_attached_print(phydev, NULL); } EXPORT_SYMBOL(phy_attached_info); #define ATTACHED_FMT "attached PHY driver [%s] (mii_bus:phy_addr=%s, irq=%s)" void phy_attached_print(struct phy_device *phydev, const char *fmt, ...) { const char *drv_name = phydev->drv ? phydev->drv->name : "unbound"; char *irq_str; char irq_num[8]; switch(phydev->irq) { case PHY_POLL: irq_str = "POLL"; break; case PHY_IGNORE_INTERRUPT: irq_str = "IGNORE"; break; default: snprintf(irq_num, sizeof(irq_num), "%d", phydev->irq); irq_str = irq_num; break; } if (!fmt) { phydev_info(phydev, ATTACHED_FMT "\n", drv_name, phydev_name(phydev), irq_str); } else { va_list ap; phydev_info(phydev, ATTACHED_FMT, drv_name, phydev_name(phydev), irq_str); va_start(ap, fmt); vprintk(fmt, ap); va_end(ap); } } EXPORT_SYMBOL(phy_attached_print); /** * phy_attach_direct - attach a network device to a given PHY device pointer * @dev: network device to attach * @phydev: Pointer to phy_device to attach * @flags: PHY device's dev_flags * @interface: PHY device's interface * * Description: Called by drivers to attach to a particular PHY * device. The phy_device is found, and properly hooked up * to the phy_driver. If no driver is attached, then a * generic driver is used. The phy_device is given a ptr to * the attaching device, and given a callback for link status * change. The phy_device is returned to the attaching driver. * This function takes a reference on the phy device. */ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, u32 flags, phy_interface_t interface) { struct module *ndev_owner = dev->dev.parent->driver->owner; struct mii_bus *bus = phydev->mdio.bus; struct device *d = &phydev->mdio.dev; bool using_genphy = false; int err; /* For Ethernet device drivers that register their own MDIO bus, we * will have bus->owner match ndev_mod, so we do not want to increment * our own module->refcnt here, otherwise we would not be able to * unload later on. */ if (ndev_owner != bus->owner && !try_module_get(bus->owner)) { dev_err(&dev->dev, "failed to get the bus module\n"); return -EIO; } get_device(d); /* Assume that if there is no driver, that it doesn't * exist, and we should use the genphy driver. */ if (!d->driver) { if (phydev->is_c45) d->driver = &genphy_10g_driver.mdiodrv.driver; else d->driver = &genphy_driver.mdiodrv.driver; using_genphy = true; } if (!try_module_get(d->driver->owner)) { dev_err(&dev->dev, "failed to get the device driver module\n"); err = -EIO; goto error_put_device; } if (using_genphy) { err = d->driver->probe(d); if (err >= 0) err = device_bind_driver(d); if (err) goto error_module_put; } if (phydev->attached_dev) { dev_err(&dev->dev, "PHY already attached\n"); err = -EBUSY; goto error; } phydev->phy_link_change = phy_link_change; phydev->attached_dev = dev; dev->phydev = phydev; /* Some Ethernet drivers try to connect to a PHY device before * calling register_netdevice() -> netdev_register_kobject() and * does the dev->dev.kobj initialization. Here we only check for * success which indicates that the network device kobject is * ready. Once we do that we still need to keep track of whether * links were successfully set up or not for phy_detach() to * remove them accordingly. */ phydev->sysfs_links = false; err = sysfs_create_link(&phydev->mdio.dev.kobj, &dev->dev.kobj, "attached_dev"); if (!err) { err = sysfs_create_link_nowarn(&dev->dev.kobj, &phydev->mdio.dev.kobj, "phydev"); if (err) { dev_err(&dev->dev, "could not add device link to %s err %d\n", kobject_name(&phydev->mdio.dev.kobj), err); /* non-fatal - some net drivers can use one netdevice * with more then one phy */ } phydev->sysfs_links = true; } phydev->dev_flags = flags; phydev->interface = interface; phydev->state = PHY_READY; /* Initial carrier state is off as the phy is about to be * (re)initialized. */ netif_carrier_off(phydev->attached_dev); /* Do initial configuration here, now that * we have certain key parameters * (dev_flags and interface) */ err = phy_init_hw(phydev); if (err) goto error; phy_resume(phydev); phy_led_triggers_register(phydev); return err; error: /* phy_detach() does all of the cleanup below */ phy_detach(phydev); return err; error_module_put: module_put(d->driver->owner); error_put_device: put_device(d); if (ndev_owner != bus->owner) module_put(bus->owner); return err; } EXPORT_SYMBOL(phy_attach_direct); /** * phy_attach - attach a network device to a particular PHY device * @dev: network device to attach * @bus_id: Bus ID of PHY device to attach * @interface: PHY device's interface * * Description: Same as phy_attach_direct() except that a PHY bus_id * string is passed instead of a pointer to a struct phy_device. */ struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, phy_interface_t interface) { struct bus_type *bus = &mdio_bus_type; struct phy_device *phydev; struct device *d; int rc; /* Search the list of PHY devices on the mdio bus for the * PHY with the requested name */ d = bus_find_device_by_name(bus, NULL, bus_id); if (!d) { pr_err("PHY %s not found\n", bus_id); return ERR_PTR(-ENODEV); } phydev = to_phy_device(d); rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface); put_device(d); if (rc) return ERR_PTR(rc); return phydev; } EXPORT_SYMBOL(phy_attach); /** * phy_detach - detach a PHY device from its network device * @phydev: target phy_device struct * * This detaches the phy device from its network device and the phy * driver, and drops the reference count taken in phy_attach_direct(). */ void phy_detach(struct phy_device *phydev) { struct net_device *dev = phydev->attached_dev; struct module *ndev_owner = dev->dev.parent->driver->owner; struct mii_bus *bus; if (phydev->sysfs_links) { sysfs_remove_link(&dev->dev.kobj, "phydev"); sysfs_remove_link(&phydev->mdio.dev.kobj, "attached_dev"); } phy_suspend(phydev); phydev->attached_dev->phydev = NULL; phydev->attached_dev = NULL; phydev->phylink = NULL; phy_led_triggers_unregister(phydev); module_put(phydev->mdio.dev.driver->owner); /* If the device had no specific driver before (i.e. - it * was using the generic driver), we unbind the device * from the generic driver so that there's a chance a * real driver could be loaded */ if (phydev->mdio.dev.driver == &genphy_10g_driver.mdiodrv.driver || phydev->mdio.dev.driver == &genphy_driver.mdiodrv.driver) device_release_driver(&phydev->mdio.dev); /* * The phydev might go away on the put_device() below, so avoid * a use-after-free bug by reading the underlying bus first. */ bus = phydev->mdio.bus; put_device(&phydev->mdio.dev); if (ndev_owner != bus->owner) module_put(bus->owner); /* Assert the reset signal */ phy_device_reset(phydev, 1); } EXPORT_SYMBOL(phy_detach); int phy_suspend(struct phy_device *phydev) { struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver); struct net_device *netdev = phydev->attached_dev; struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; int ret = 0; /* If the device has WOL enabled, we cannot suspend the PHY */ phy_ethtool_get_wol(phydev, &wol); if (wol.wolopts || (netdev && netdev->wol_enabled)) return -EBUSY; if (phydev->drv && phydrv->suspend) ret = phydrv->suspend(phydev); if (ret) return ret; phydev->suspended = true; return ret; } EXPORT_SYMBOL(phy_suspend); int __phy_resume(struct phy_device *phydev) { struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver); int ret = 0; WARN_ON(!mutex_is_locked(&phydev->lock)); if (phydev->drv && phydrv->resume) ret = phydrv->resume(phydev); if (ret) return ret; phydev->suspended = false; return ret; } EXPORT_SYMBOL(__phy_resume); int phy_resume(struct phy_device *phydev) { int ret; mutex_lock(&phydev->lock); ret = __phy_resume(phydev); mutex_unlock(&phydev->lock); return ret; } EXPORT_SYMBOL(phy_resume); int phy_loopback(struct phy_device *phydev, bool enable) { struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver); int ret = 0; mutex_lock(&phydev->lock); if (enable && phydev->loopback_enabled) { ret = -EBUSY; goto out; } if (!enable && !phydev->loopback_enabled) { ret = -EINVAL; goto out; } if (phydev->drv && phydrv->set_loopback) ret = phydrv->set_loopback(phydev, enable); else ret = -EOPNOTSUPP; if (ret) goto out; phydev->loopback_enabled = enable; out: mutex_unlock(&phydev->lock); return ret; } EXPORT_SYMBOL(phy_loopback); /** * phy_reset_after_clk_enable - perform a PHY reset if needed * @phydev: target phy_device struct * * Description: Some PHYs are known to need a reset after their refclk was * enabled. This function evaluates the flags and perform the reset if it's * needed. Returns < 0 on error, 0 if the phy wasn't reset and 1 if the phy * was reset. */ int phy_reset_after_clk_enable(struct phy_device *phydev) { if (!phydev || !phydev->drv) return -ENODEV; if (phydev->drv->flags & PHY_RST_AFTER_CLK_EN) { phy_device_reset(phydev, 1); phy_device_reset(phydev, 0); return 1; } return 0; } EXPORT_SYMBOL(phy_reset_after_clk_enable); /* Generic PHY support and helper functions */ /** * genphy_config_advert - sanitize and advertise auto-negotiation parameters * @phydev: target phy_device struct * * Description: Writes MII_ADVERTISE with the appropriate values, * after sanitizing the values to make sure we only advertise * what is supported. Returns < 0 on error, 0 if the PHY's advertisement * hasn't changed, and > 0 if it has changed. */ static int genphy_config_advert(struct phy_device *phydev) { u32 advertise; int oldadv, adv, bmsr; int err, changed = 0; /* Only allow advertising what this PHY supports */ phydev->advertising &= phydev->supported; advertise = phydev->advertising; /* Setup standard advertisement */ adv = phy_read(phydev, MII_ADVERTISE); if (adv < 0) return adv; oldadv = adv; adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); adv |= ethtool_adv_to_mii_adv_t(advertise); if (adv != oldadv) { err = phy_write(phydev, MII_ADVERTISE, adv); if (err < 0) return err; changed = 1; } bmsr = phy_read(phydev, MII_BMSR); if (bmsr < 0) return bmsr; /* Per 802.3-2008, Section 22.2.4.2.16 Extended status all * 1000Mbits/sec capable PHYs shall have the BMSR_ESTATEN bit set to a * logical 1. */ if (!(bmsr & BMSR_ESTATEN)) return changed; /* Configure gigabit if it's supported */ adv = phy_read(phydev, MII_CTRL1000); if (adv < 0) return adv; oldadv = adv; adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); if (phydev->supported & (SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)) { adv |= ethtool_adv_to_mii_ctrl1000_t(advertise); } if (adv != oldadv) changed = 1; err = phy_write(phydev, MII_CTRL1000, adv); if (err < 0) return err; return changed; } /** * genphy_config_eee_advert - disable unwanted eee mode advertisement * @phydev: target phy_device struct * * Description: Writes MDIO_AN_EEE_ADV after disabling unsupported energy * efficent ethernet modes. Returns 0 if the PHY's advertisement hasn't * changed, and 1 if it has changed. */ static int genphy_config_eee_advert(struct phy_device *phydev) { int broken = phydev->eee_broken_modes; int old_adv, adv; /* Nothing to disable */ if (!broken) return 0; /* If the following call fails, we assume that EEE is not * supported by the phy. If we read 0, EEE is not advertised * In both case, we don't need to continue */ adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); if (adv <= 0) return 0; old_adv = adv; adv &= ~broken; /* Advertising remains unchanged with the broken mask */ if (old_adv == adv) return 0; phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv); return 1; } /** * genphy_setup_forced - configures/forces speed/duplex from @phydev * @phydev: target phy_device struct * * Description: Configures MII_BMCR to force speed/duplex * to the values in phydev. Assumes that the values are valid. * Please see phy_sanitize_settings(). */ int genphy_setup_forced(struct phy_device *phydev) { u16 ctl = 0; phydev->pause = 0; phydev->asym_pause = 0; if (SPEED_1000 == phydev->speed) ctl |= BMCR_SPEED1000; else if (SPEED_100 == phydev->speed) ctl |= BMCR_SPEED100; if (DUPLEX_FULL == phydev->duplex) ctl |= BMCR_FULLDPLX; return phy_modify(phydev, MII_BMCR, ~(BMCR_LOOPBACK | BMCR_ISOLATE | BMCR_PDOWN), ctl); } EXPORT_SYMBOL(genphy_setup_forced); /** * genphy_restart_aneg - Enable and Restart Autonegotiation * @phydev: target phy_device struct */ int genphy_restart_aneg(struct phy_device *phydev) { /* Don't isolate the PHY if we're negotiating */ return phy_modify(phydev, MII_BMCR, BMCR_ISOLATE, BMCR_ANENABLE | BMCR_ANRESTART); } EXPORT_SYMBOL(genphy_restart_aneg); /** * genphy_config_aneg - restart auto-negotiation or write BMCR * @phydev: target phy_device struct * * Description: If auto-negotiation is enabled, we configure the * advertising, and then restart auto-negotiation. If it is not * enabled, then we write the BMCR. */ int genphy_config_aneg(struct phy_device *phydev) { int err, changed; changed = genphy_config_eee_advert(phydev); if (AUTONEG_ENABLE != phydev->autoneg) return genphy_setup_forced(phydev); err = genphy_config_advert(phydev); if (err < 0) /* error */ return err; changed |= err; if (changed == 0) { /* Advertisement hasn't changed, but maybe aneg was never on to * begin with? Or maybe phy was isolated? */ int ctl = phy_read(phydev, MII_BMCR); if (ctl < 0) return ctl; if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE)) changed = 1; /* do restart aneg */ } /* Only restart aneg if we are advertising something different * than we were before. */ if (changed > 0) return genphy_restart_aneg(phydev); return 0; } EXPORT_SYMBOL(genphy_config_aneg); /** * genphy_aneg_done - return auto-negotiation status * @phydev: target phy_device struct * * 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. */ int genphy_aneg_done(struct phy_device *phydev) { int retval = phy_read(phydev, MII_BMSR); return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); } EXPORT_SYMBOL(genphy_aneg_done); /** * genphy_update_link - update link status in @phydev * @phydev: target phy_device struct * * Description: Update the value in phydev->link to reflect the * current link value. In order to do this, we need to read * the status register twice, keeping the second value. */ int genphy_update_link(struct phy_device *phydev) { int status; /* Do a fake read */ status = phy_read(phydev, MII_BMSR); if (status < 0) return status; /* Read link and autonegotiation status */ status = phy_read(phydev, MII_BMSR); if (status < 0) return status; if ((status & BMSR_LSTATUS) == 0) phydev->link = 0; else phydev->link = 1; return 0; } EXPORT_SYMBOL(genphy_update_link); /** * genphy_read_status - check the link status and update current link state * @phydev: target phy_device struct * * Description: Check the link, then figure out the current state * by comparing what we advertise with what the link partner * advertises. Start by checking the gigabit possibilities, * then move on to 10/100. */ int genphy_read_status(struct phy_device *phydev) { int adv; int err; int lpa; int lpagb = 0; int common_adv; int common_adv_gb = 0; /* Update the link, but return if there was an error */ err = genphy_update_link(phydev); if (err) return err; phydev->lp_advertising = 0; if (AUTONEG_ENABLE == phydev->autoneg) { if (phydev->supported & (SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)) { lpagb = phy_read(phydev, MII_STAT1000); if (lpagb < 0) return lpagb; adv = phy_read(phydev, MII_CTRL1000); if (adv < 0) return adv; if (lpagb & LPA_1000MSFAIL) { if (adv & CTL1000_ENABLE_MASTER) phydev_err(phydev, "Master/Slave resolution failed, maybe conflicting manual settings?\n"); else phydev_err(phydev, "Master/Slave resolution failed\n"); return -ENOLINK; } phydev->lp_advertising = mii_stat1000_to_ethtool_lpa_t(lpagb); common_adv_gb = lpagb & adv << 2; } lpa = phy_read(phydev, MII_LPA); if (lpa < 0) return lpa; phydev->lp_advertising |= mii_lpa_to_ethtool_lpa_t(lpa); adv = phy_read(phydev, MII_ADVERTISE); if (adv < 0) return adv; common_adv = lpa & adv; phydev->speed = SPEED_10; phydev->duplex = DUPLEX_HALF; phydev->pause = 0; phydev->asym_pause = 0; if (common_adv_gb & (LPA_1000FULL | LPA_1000HALF)) { phydev->speed = SPEED_1000; if (common_adv_gb & LPA_1000FULL) phydev->duplex = DUPLEX_FULL; } else if (common_adv & (LPA_100FULL | LPA_100HALF)) { phydev->speed = SPEED_100; if (common_adv & LPA_100FULL) phydev->duplex = DUPLEX_FULL; } else if (common_adv & LPA_10FULL) phydev->duplex = DUPLEX_FULL; if (phydev->duplex == DUPLEX_FULL) { phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0; phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0; } } else { int bmcr = phy_read(phydev, MII_BMCR); if (bmcr < 0) return bmcr; if (bmcr & BMCR_FULLDPLX) phydev->duplex = DUPLEX_FULL; else phydev->duplex = DUPLEX_HALF; if (bmcr & BMCR_SPEED1000) phydev->speed = SPEED_1000; else if (bmcr & BMCR_SPEED100) phydev->speed = SPEED_100; else phydev->speed = SPEED_10; phydev->pause = 0; phydev->asym_pause = 0; } return 0; } EXPORT_SYMBOL(genphy_read_status); /** * genphy_soft_reset - software reset the PHY via BMCR_RESET bit * @phydev: target phy_device struct * * Description: Perform a software PHY reset using the standard * BMCR_RESET bit and poll for the reset bit to be cleared. * * Returns: 0 on success, < 0 on failure */ int genphy_soft_reset(struct phy_device *phydev) { int ret; ret = phy_write(phydev, MII_BMCR, BMCR_RESET); if (ret < 0) return ret; return phy_poll_reset(phydev); } EXPORT_SYMBOL(genphy_soft_reset); int genphy_config_init(struct phy_device *phydev) { int val; u32 features; features = (SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_AUI | SUPPORTED_FIBRE | SUPPORTED_BNC | SUPPORTED_Pause | SUPPORTED_Asym_Pause); /* Do we support autonegotiation? */ val = phy_read(phydev, MII_BMSR); if (val < 0) return val; if (val & BMSR_ANEGCAPABLE) features |= SUPPORTED_Autoneg; if (val & BMSR_100FULL) features |= SUPPORTED_100baseT_Full; if (val & BMSR_100HALF) features |= SUPPORTED_100baseT_Half; if (val & BMSR_10FULL) features |= SUPPORTED_10baseT_Full; if (val & BMSR_10HALF) features |= SUPPORTED_10baseT_Half; if (val & BMSR_ESTATEN) { val = phy_read(phydev, MII_ESTATUS); if (val < 0) return val; if (val & ESTATUS_1000_TFULL) features |= SUPPORTED_1000baseT_Full; if (val & ESTATUS_1000_THALF) features |= SUPPORTED_1000baseT_Half; } phydev->supported &= features; phydev->advertising &= features; return 0; } EXPORT_SYMBOL(genphy_config_init); /* This is used for the phy device which doesn't support the MMD extended * register access, but it does have side effect when we are trying to access * the MMD register via indirect method. */ int genphy_read_mmd_unsupported(struct phy_device *phdev, int devad, u16 regnum) { return -EOPNOTSUPP; } EXPORT_SYMBOL(genphy_read_mmd_unsupported); int genphy_write_mmd_unsupported(struct phy_device *phdev, int devnum, u16 regnum, u16 val) { return -EOPNOTSUPP; } EXPORT_SYMBOL(genphy_write_mmd_unsupported); int genphy_suspend(struct phy_device *phydev) { return phy_set_bits(phydev, MII_BMCR, BMCR_PDOWN); } EXPORT_SYMBOL(genphy_suspend); int genphy_resume(struct phy_device *phydev) { return phy_clear_bits(phydev, MII_BMCR, BMCR_PDOWN); } EXPORT_SYMBOL(genphy_resume); int genphy_loopback(struct phy_device *phydev, bool enable) { return phy_modify(phydev, MII_BMCR, BMCR_LOOPBACK, enable ? BMCR_LOOPBACK : 0); } EXPORT_SYMBOL(genphy_loopback); static int __set_phy_supported(struct phy_device *phydev, u32 max_speed) { switch (max_speed) { case SPEED_10: phydev->supported &= ~PHY_100BT_FEATURES; /* fall through */ case SPEED_100: phydev->supported &= ~PHY_1000BT_FEATURES; break; case SPEED_1000: break; default: return -ENOTSUPP; } return 0; } int phy_set_max_speed(struct phy_device *phydev, u32 max_speed) { int err; err = __set_phy_supported(phydev, max_speed); if (err) return err; phydev->advertising = phydev->supported; return 0; } EXPORT_SYMBOL(phy_set_max_speed); /** * phy_remove_link_mode - Remove a supported link mode * @phydev: phy_device structure to remove link mode from * @link_mode: Link mode to be removed * * Description: Some MACs don't support all link modes which the PHY * does. e.g. a 1G MAC often does not support 1000Half. Add a helper * to remove a link mode. */ void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode) { WARN_ON(link_mode > 31); phydev->supported &= ~BIT(link_mode); phydev->advertising = phydev->supported; } EXPORT_SYMBOL(phy_remove_link_mode); /** * phy_support_sym_pause - Enable support of symmetrical pause * @phydev: target phy_device struct * * Description: Called by the MAC to indicate is supports symmetrical * Pause, but not asym pause. */ void phy_support_sym_pause(struct phy_device *phydev) { phydev->supported &= ~SUPPORTED_Asym_Pause; phydev->supported |= SUPPORTED_Pause; phydev->advertising = phydev->supported; } EXPORT_SYMBOL(phy_support_sym_pause); /** * phy_support_asym_pause - Enable support of asym pause * @phydev: target phy_device struct * * Description: Called by the MAC to indicate is supports Asym Pause. */ void phy_support_asym_pause(struct phy_device *phydev) { phydev->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; phydev->advertising = phydev->supported; } EXPORT_SYMBOL(phy_support_asym_pause); /** * phy_set_sym_pause - Configure symmetric Pause * @phydev: target phy_device struct * @rx: Receiver Pause is supported * @tx: Transmit Pause is supported * @autoneg: Auto neg should be used * * Description: Configure advertised Pause support depending on if * receiver pause and pause auto neg is supported. Generally called * from the set_pauseparam .ndo. */ void phy_set_sym_pause(struct phy_device *phydev, bool rx, bool tx, bool autoneg) { phydev->supported &= ~SUPPORTED_Pause; if (rx && tx && autoneg) phydev->supported |= SUPPORTED_Pause; phydev->advertising = phydev->supported; } EXPORT_SYMBOL(phy_set_sym_pause); /** * phy_set_asym_pause - Configure Pause and Asym Pause * @phydev: target phy_device struct * @rx: Receiver Pause is supported * @tx: Transmit Pause is supported * * Description: Configure advertised Pause support depending on if * transmit and receiver pause is supported. If there has been a * change in adverting, trigger a new autoneg. Generally called from * the set_pauseparam .ndo. */ void phy_set_asym_pause(struct phy_device *phydev, bool rx, bool tx) { u16 oldadv = phydev->advertising; u16 newadv = oldadv &= ~(SUPPORTED_Pause | SUPPORTED_Asym_Pause); if (rx) newadv |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; if (tx) newadv ^= SUPPORTED_Asym_Pause; if (oldadv != newadv) { phydev->advertising = newadv; if (phydev->autoneg) phy_start_aneg(phydev); } } EXPORT_SYMBOL(phy_set_asym_pause); /** * phy_validate_pause - Test if the PHY/MAC support the pause configuration * @phydev: phy_device struct * @pp: requested pause configuration * * Description: Test if the PHY/MAC combination supports the Pause * configuration the user is requesting. Returns True if it is * supported, false otherwise. */ bool phy_validate_pause(struct phy_device *phydev, struct ethtool_pauseparam *pp) { if (!(phydev->supported & SUPPORTED_Pause) || (!(phydev->supported & SUPPORTED_Asym_Pause) && pp->rx_pause != pp->tx_pause)) return false; return true; } EXPORT_SYMBOL(phy_validate_pause); static void of_set_phy_supported(struct phy_device *phydev) { struct device_node *node = phydev->mdio.dev.of_node; u32 max_speed; if (!IS_ENABLED(CONFIG_OF_MDIO)) return; if (!node) return; if (!of_property_read_u32(node, "max-speed", &max_speed)) __set_phy_supported(phydev, max_speed); } static void of_set_phy_eee_broken(struct phy_device *phydev) { struct device_node *node = phydev->mdio.dev.of_node; u32 broken = 0; if (!IS_ENABLED(CONFIG_OF_MDIO)) return; if (!node) return; if (of_property_read_bool(node, "eee-broken-100tx")) broken |= MDIO_EEE_100TX; if (of_property_read_bool(node, "eee-broken-1000t")) broken |= MDIO_EEE_1000T; if (of_property_read_bool(node, "eee-broken-10gt")) broken |= MDIO_EEE_10GT; if (of_property_read_bool(node, "eee-broken-1000kx")) broken |= MDIO_EEE_1000KX; if (of_property_read_bool(node, "eee-broken-10gkx4")) broken |= MDIO_EEE_10GKX4; if (of_property_read_bool(node, "eee-broken-10gkr")) broken |= MDIO_EEE_10GKR; phydev->eee_broken_modes = broken; } /** * phy_probe - probe and init a PHY device * @dev: device to probe and init * * Description: Take care of setting up the phy_device structure, * set the state to READY (the driver's init function should * set it to STARTING if needed). */ static int phy_probe(struct device *dev) { struct phy_device *phydev = to_phy_device(dev); struct device_driver *drv = phydev->mdio.dev.driver; struct phy_driver *phydrv = to_phy_driver(drv); u32 features; int err = 0; phydev->drv = phydrv; /* Disable the interrupt if the PHY doesn't support it * but the interrupt is still a valid one */ if (!(phydrv->flags & PHY_HAS_INTERRUPT) && phy_interrupt_is_valid(phydev)) phydev->irq = PHY_POLL; if (phydrv->flags & PHY_IS_INTERNAL) phydev->is_internal = true; mutex_lock(&phydev->lock); /* Start out supporting everything. Eventually, * a controller will attach, and may modify one * or both of these values */ ethtool_convert_link_mode_to_legacy_u32(&features, phydrv->features); phydev->supported = features; of_set_phy_supported(phydev); phydev->advertising = phydev->supported; /* Get the EEE modes we want to prohibit. We will ask * the PHY stop advertising these mode later on */ of_set_phy_eee_broken(phydev); /* The Pause Frame bits indicate that the PHY can support passing * pause frames. During autonegotiation, the PHYs will determine if * they should allow pause frames to pass. The MAC driver should then * use that result to determine whether to enable flow control via * pause frames. * * Normally, PHY drivers should not set the Pause bits, and instead * allow phylib to do that. However, there may be some situations * (e.g. hardware erratum) where the driver wants to set only one * of these bits. */ if (test_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydrv->features) || test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, phydrv->features)) { phydev->supported &= ~(SUPPORTED_Pause | SUPPORTED_Asym_Pause); if (test_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydrv->features)) phydev->supported |= SUPPORTED_Pause; if (test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, phydrv->features)) phydev->supported |= SUPPORTED_Asym_Pause; } else { phydev->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; } /* Set the state to READY by default */ phydev->state = PHY_READY; if (phydev->drv->probe) { /* Deassert the reset signal */ phy_device_reset(phydev, 0); err = phydev->drv->probe(phydev); if (err) { /* Assert the reset signal */ phy_device_reset(phydev, 1); } } mutex_unlock(&phydev->lock); return err; } static int phy_remove(struct device *dev) { struct phy_device *phydev = to_phy_device(dev); cancel_delayed_work_sync(&phydev->state_queue); mutex_lock(&phydev->lock); phydev->state = PHY_DOWN; mutex_unlock(&phydev->lock); if (phydev->drv && phydev->drv->remove) { phydev->drv->remove(phydev); /* Assert the reset signal */ phy_device_reset(phydev, 1); } phydev->drv = NULL; return 0; } /** * phy_driver_register - register a phy_driver with the PHY layer * @new_driver: new phy_driver to register * @owner: module owning this PHY */ int phy_driver_register(struct phy_driver *new_driver, struct module *owner) { int retval; new_driver->mdiodrv.flags |= MDIO_DEVICE_IS_PHY; new_driver->mdiodrv.driver.name = new_driver->name; new_driver->mdiodrv.driver.bus = &mdio_bus_type; new_driver->mdiodrv.driver.probe = phy_probe; new_driver->mdiodrv.driver.remove = phy_remove; new_driver->mdiodrv.driver.owner = owner; /* The following works around an issue where the PHY driver doesn't bind * to the device, resulting in the genphy driver being used instead of * the dedicated driver. The root cause of the issue isn't known yet * and seems to be in the base driver core. Once this is fixed we may * remove this workaround. */ new_driver->mdiodrv.driver.probe_type = PROBE_FORCE_SYNCHRONOUS; retval = driver_register(&new_driver->mdiodrv.driver); if (retval) { pr_err("%s: Error %d in registering driver\n", new_driver->name, retval); return retval; } pr_debug("%s: Registered new driver\n", new_driver->name); return 0; } EXPORT_SYMBOL(phy_driver_register); int phy_drivers_register(struct phy_driver *new_driver, int n, struct module *owner) { int i, ret = 0; for (i = 0; i < n; i++) { ret = phy_driver_register(new_driver + i, owner); if (ret) { while (i-- > 0) phy_driver_unregister(new_driver + i); break; } } return ret; } EXPORT_SYMBOL(phy_drivers_register); void phy_driver_unregister(struct phy_driver *drv) { driver_unregister(&drv->mdiodrv.driver); } EXPORT_SYMBOL(phy_driver_unregister); void phy_drivers_unregister(struct phy_driver *drv, int n) { int i; for (i = 0; i < n; i++) phy_driver_unregister(drv + i); } EXPORT_SYMBOL(phy_drivers_unregister); static struct phy_driver genphy_driver = { .phy_id = 0xffffffff, .phy_id_mask = 0xffffffff, .name = "Generic PHY", .soft_reset = genphy_no_soft_reset, .config_init = genphy_config_init, .features = PHY_GBIT_ALL_PORTS_FEATURES, .aneg_done = genphy_aneg_done, .suspend = genphy_suspend, .resume = genphy_resume, .set_loopback = genphy_loopback, }; static int __init phy_init(void) { int rc; rc = mdio_bus_init(); if (rc) return rc; features_init(); rc = phy_driver_register(&genphy_10g_driver, THIS_MODULE); if (rc) goto err_10g; rc = phy_driver_register(&genphy_driver, THIS_MODULE); if (rc) { phy_driver_unregister(&genphy_10g_driver); err_10g: mdio_bus_exit(); } return rc; } static void __exit phy_exit(void) { phy_driver_unregister(&genphy_10g_driver); phy_driver_unregister(&genphy_driver); mdio_bus_exit(); } subsys_initcall(phy_init); module_exit(phy_exit);
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