// SPDX-License-Identifier: GPL-2.0+ /* Framework for finding and configuring PHYs. * Also contains generic PHY driver * * Author: Andy Fleming * * Copyright (c) 2004 Freescale Semiconductor, Inc. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/bitmap.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/mdio.h> #include <linux/mii.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/phy.h> #include <linux/phy_led_triggers.h> #include <linux/property.h> #include <linux/sfp.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/uaccess.h> #include <linux/unistd.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); __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_10gbit_fec_features) __ro_after_init; EXPORT_SYMBOL_GPL(phy_10gbit_fec_features); const int phy_basic_ports_array[3] = { <------>ETHTOOL_LINK_MODE_Autoneg_BIT, <------>ETHTOOL_LINK_MODE_TP_BIT, <------>ETHTOOL_LINK_MODE_MII_BIT, }; EXPORT_SYMBOL_GPL(phy_basic_ports_array); const int phy_fibre_port_array[1] = { <------>ETHTOOL_LINK_MODE_FIBRE_BIT, }; EXPORT_SYMBOL_GPL(phy_fibre_port_array); const int phy_all_ports_features_array[7] = { <------>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, }; EXPORT_SYMBOL_GPL(phy_all_ports_features_array); const int phy_10_100_features_array[4] = { <------>ETHTOOL_LINK_MODE_10baseT_Half_BIT, <------>ETHTOOL_LINK_MODE_10baseT_Full_BIT, <------>ETHTOOL_LINK_MODE_100baseT_Half_BIT, <------>ETHTOOL_LINK_MODE_100baseT_Full_BIT, }; EXPORT_SYMBOL_GPL(phy_10_100_features_array); const int phy_basic_t1_features_array[2] = { <------>ETHTOOL_LINK_MODE_TP_BIT, <------>ETHTOOL_LINK_MODE_100baseT1_Full_BIT, }; EXPORT_SYMBOL_GPL(phy_basic_t1_features_array); const int phy_gbit_features_array[2] = { <------>ETHTOOL_LINK_MODE_1000baseT_Half_BIT, <------>ETHTOOL_LINK_MODE_1000baseT_Full_BIT, }; EXPORT_SYMBOL_GPL(phy_gbit_features_array); const int phy_10gbit_features_array[1] = { <------>ETHTOOL_LINK_MODE_10000baseT_Full_BIT, }; EXPORT_SYMBOL_GPL(phy_10gbit_features_array); static const int phy_10gbit_fec_features_array[1] = { <------>ETHTOOL_LINK_MODE_10000baseR_FEC_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); <------>/* 10G FEC only */ <------>linkmode_set_bit_array(phy_10gbit_fec_features_array, <------><------><------> ARRAY_SIZE(phy_10gbit_fec_features_array), <------><------><------> phy_10gbit_fec_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; static LIST_HEAD(phy_fixup_list); static DEFINE_MUTEX(phy_fixup_lock); 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) <------><------>goto out; <------>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; out: <------>return !phydev->suspended; } static __maybe_unused 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; <------>phydev->suspended_by_mdio_bus = 1; <------>return phy_suspend(phydev); } static __maybe_unused int mdio_bus_phy_resume(struct device *dev) { <------>struct phy_device *phydev = to_phy_device(dev); <------>int ret; <------>if (!phydev->suspended_by_mdio_bus) <------><------>goto no_resume; <------>phydev->suspended_by_mdio_bus = 0; <------>ret = phy_init_hw(phydev); <------>if (ret < 0) <------><------>return ret; <------>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 SIMPLE_DEV_PM_OPS(mdio_bus_phy_pm_ops, mdio_bus_phy_suspend, <------><------><------> mdio_bus_phy_resume); /** * 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.device_ids[i] == 0xffffffff) <------><------><------><------>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 ssize_t phy_registers_show(struct device *dev, struct device_attribute *attr, char *buf) { <------>struct phy_device *phydev = to_phy_device(dev); <------>int index; <------>for (index = 0; index < 32; index++) <------><------>sprintf(buf, "%s%2d: 0x%x\n", buf, index, <------><------><------>phy_read(phydev, index)); <------>return strlen(buf); } static ssize_t phy_registers_store(struct device *dev, <------><------> struct device_attribute *attr, <------><------> const char *buf, size_t count) { <------>struct phy_device *phydev = to_phy_device(dev); <------>int index = 0, val = 0; <------>char tmp[32]; <------>char *data; <------>if (count >= sizeof(tmp)) <------><------>goto out; <------>memset(tmp, 0, sizeof(tmp)); <------>memcpy(tmp, buf, count); <------>data = tmp; <------>data = strstr(data, " "); <------>if (!data) <------><------>goto out; <------>*data = 0; <------>data++; <------>if (kstrtoint(tmp, 0, &index) || index >= 32) <------><------>goto out; <------>if (kstrtoint(data, 0, &val) || val > 0xffff) <------><------>goto out; <------>pr_info("Set Ethernet PHY register %d to 0x%x\n", (int)index, (int)val); <------>phy_write(phydev, index, val); <------>return count; out: <------>pr_err("wrong register value input\n"); <------>pr_err("usage: <reg index> <value>\n"); <------>return count; } static DEVICE_ATTR_RW(phy_registers); static struct attribute *phy_dev_attrs[] = { <------>&dev_attr_phy_id.attr, <------>&dev_attr_phy_interface.attr, <------>&dev_attr_phy_has_fixups.attr, <------>&dev_attr_phy_registers.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 = pm_ptr(&mdio_bus_phy_pm_ops), }; static int phy_request_driver_module(struct phy_device *dev, u32 phy_id) { <------>int ret; <------>ret = request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT, <------><------><------> MDIO_ID_ARGS(phy_id)); <------>/* We only check for failures in executing the usermode binary, <------> * not whether a PHY driver module exists for the PHY ID. <------> * Accept -ENOENT because this may occur in case no initramfs exists, <------> * then modprobe isn't available. <------> */ <------>if (IS_ENABLED(CONFIG_MODULES) && ret < 0 && ret != -ENOENT) { <------><------>phydev_err(dev, "error %d loading PHY driver module for ID 0x%08lx\n", <------><------><------> ret, (unsigned long)phy_id); <------><------>return ret; <------>} <------>return 0; } struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id, <------><------><------><------> bool is_c45, <------><------><------><------> struct phy_c45_device_ids *c45_ids) { <------>struct phy_device *dev; <------>struct mdio_device *mdiodev; <------>int ret = 0; <------>/* 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 = SPEED_UNKNOWN; <------>dev->duplex = DUPLEX_UNKNOWN; <------>dev->pause = 0; <------>dev->asym_pause = 0; <------>dev->link = 0; <------>dev->port = PORT_TP; <------>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); <------>device_initialize(&mdiodev->dev); <------>dev->state = PHY_DOWN; <------>mutex_init(&dev->lock); <------>INIT_DELAYED_WORK(&dev->state_queue, phy_state_machine); <------>/* 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. <------> */ <------>if (is_c45 && c45_ids) { <------><------>const int num_ids = ARRAY_SIZE(c45_ids->device_ids); <------><------>int i; <------><------>for (i = 1; i < num_ids; i++) { <------><------><------>if (c45_ids->device_ids[i] == 0xffffffff) <------><------><------><------>continue; <------><------><------>ret = phy_request_driver_module(dev, <------><------><------><------><------><------>c45_ids->device_ids[i]); <------><------><------>if (ret) <------><------><------><------>break; <------><------>} <------>} else { <------><------>ret = phy_request_driver_module(dev, phy_id); <------>} <------>if (ret) { <------><------>put_device(&mdiodev->dev); <------><------>dev = ERR_PTR(ret); <------>} <------>return dev; } EXPORT_SYMBOL(phy_device_create); /* phy_c45_probe_present - checks to see if a MMD is present in the package * @bus: the target MII bus * @prtad: PHY package address on the MII bus * @devad: PHY device (MMD) address * * Read the MDIO_STAT2 register, and check whether a device is responding * at this address. * * Returns: negative error number on bus access error, zero if no device * is responding, or positive if a device is present. */ static int phy_c45_probe_present(struct mii_bus *bus, int prtad, int devad) { <------>int stat2; <------>stat2 = mdiobus_c45_read(bus, prtad, devad, MDIO_STAT2); <------>if (stat2 < 0) <------><------>return stat2; <------>return (stat2 & MDIO_STAT2_DEVPRST) == MDIO_STAT2_DEVPRST_VAL; } /* 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; <------>phy_reg = mdiobus_c45_read(bus, addr, dev_addr, MDIO_DEVS2); <------>if (phy_reg < 0) <------><------>return -EIO; <------>*devices_in_package = phy_reg << 16; <------>phy_reg = mdiobus_c45_read(bus, addr, dev_addr, MDIO_DEVS1); <------>if (phy_reg < 0) <------><------>return -EIO; <------>*devices_in_package |= phy_reg; <------>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 * @c45_ids: where to store the c45 ID information. * * Read the PHY "devices in package". If this appears to be valid, read * the PHY identifiers for each device. Return the "devices in package" * and identifiers in @c45_ids. * * Returns zero on success, %-EIO on bus access error, or %-ENODEV if * the "devices in package" is invalid. */ static int get_phy_c45_ids(struct mii_bus *bus, int addr, <------><------><------> struct phy_c45_device_ids *c45_ids) { <------>const int num_ids = ARRAY_SIZE(c45_ids->device_ids); <------>u32 devs_in_pkg = 0; <------>int i, ret, phy_reg; <------>/* 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 < MDIO_MMD_NUM && (devs_in_pkg == 0 || <------> (devs_in_pkg & 0x1fffffff) == 0x1fffffff); i++) { <------><------>if (i == MDIO_MMD_VEND1 || i == MDIO_MMD_VEND2) { <------><------><------>/* Check that there is a device present at this <------><------><------> * address before reading the devices-in-package <------><------><------> * register to avoid reading garbage from the PHY. <------><------><------> * Some PHYs (88x3310) vendor space is not IEEE802.3 <------><------><------> * compliant. <------><------><------> */ <------><------><------>ret = phy_c45_probe_present(bus, addr, i); <------><------><------>if (ret < 0) <------><------><------><------>return -EIO; <------><------><------>if (!ret) <------><------><------><------>continue; <------><------>} <------><------>phy_reg = get_phy_c45_devs_in_pkg(bus, addr, i, &devs_in_pkg); <------><------>if (phy_reg < 0) <------><------><------>return -EIO; <------>} <------>if ((devs_in_pkg & 0x1fffffff) == 0x1fffffff) { <------><------>/* If mostly Fs, there is no device there, then let's probe <------><------> * MMD 0, 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_in_pkg); <------><------>if (phy_reg < 0) <------><------><------>return -EIO; <------><------>/* no device there, let's get out of here */ <------><------>if ((devs_in_pkg & 0x1fffffff) == 0x1fffffff) <------><------><------>return -ENODEV; <------>} <------>/* Now probe Device Identifiers for each device present. */ <------>for (i = 1; i < num_ids; i++) { <------><------>if (!(devs_in_pkg & (1 << i))) <------><------><------>continue; <------><------>if (i == MDIO_MMD_VEND1 || i == MDIO_MMD_VEND2) { <------><------><------>/* Probe the "Device Present" bits for the vendor MMDs <------><------><------> * to ignore these if they do not contain IEEE 802.3 <------><------><------> * registers. <------><------><------> */ <------><------><------>ret = phy_c45_probe_present(bus, addr, i); <------><------><------>if (ret < 0) <------><------><------><------>return ret; <------><------><------>if (!ret) <------><------><------><------>continue; <------><------>} <------><------>phy_reg = mdiobus_c45_read(bus, addr, i, MII_PHYSID1); <------><------>if (phy_reg < 0) <------><------><------>return -EIO; <------><------>c45_ids->device_ids[i] = phy_reg << 16; <------><------>phy_reg = mdiobus_c45_read(bus, addr, i, MII_PHYSID2); <------><------>if (phy_reg < 0) <------><------><------>return -EIO; <------><------>c45_ids->device_ids[i] |= phy_reg; <------>} <------>c45_ids->devices_in_package = devs_in_pkg; <------>/* Bit 0 doesn't represent a device, it indicates c22 regs presence */ <------>c45_ids->mmds_present = devs_in_pkg & ~BIT(0); <------>return 0; } /** * get_phy_c22_id - reads the specified addr for its clause 22 ID. * @bus: the target MII bus * @addr: PHY address on the MII bus * @phy_id: where to store the ID retrieved. * * Read the 802.3 clause 22 PHY ID from the PHY at @addr on the @bus, * placing it in @phy_id. Return zero on successful read and the ID is * valid, %-EIO on bus access error, or %-ENODEV if no device responds * or invalid ID. */ static int get_phy_c22_id(struct mii_bus *bus, int addr, u32 *phy_id) { <------>int phy_reg; <------>/* Grab the bits from PHYIR1, and put them in the upper half */ <------>phy_reg = mdiobus_read(bus, addr, MII_PHYSID1); <------>if (phy_reg < 0) { <------><------>/* returning -ENODEV doesn't stop bus scanning */ <------><------>return (phy_reg == -EIO || phy_reg == -ENODEV) ? -ENODEV : -EIO; <------>} <------>*phy_id = phy_reg << 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) { <------><------>/* returning -ENODEV doesn't stop bus scanning */ <------><------>return (phy_reg == -EIO || phy_reg == -ENODEV) ? -ENODEV : -EIO; <------>} <------>*phy_id |= phy_reg; <------>/* If the phy_id is mostly Fs, there is no device there */ <------>if ((*phy_id & 0x1fffffff) == 0x1fffffff) <------><------>return -ENODEV; <------>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 * * Probe for a PHY at @addr on @bus. * * When probing for a clause 22 PHY, then read the ID registers. If we find * a valid ID, allocate and return a &struct phy_device. * * When probing for a clause 45 PHY, read the "devices in package" registers. * If the "devices in package" appears valid, read the ID registers for each * MMD, allocate and return a &struct phy_device. * * Returns an allocated &struct phy_device on success, %-ENODEV if there is * no PHY present, or %-EIO on bus access error. */ struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45) { <------>struct phy_c45_device_ids c45_ids; <------>u32 phy_id = 0; <------>int r; <------>c45_ids.devices_in_package = 0; <------>c45_ids.mmds_present = 0; <------>memset(c45_ids.device_ids, 0xff, sizeof(c45_ids.device_ids)); <------>if (is_c45) <------><------>r = get_phy_c45_ids(bus, addr, &c45_ids); <------>else <------><------>r = get_phy_c22_id(bus, addr, &phy_id); <------>if (r) <------><------>return ERR_PTR(r); <------>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) { <------><------>phydev_err(phydev, "failed to initialize\n"); <------><------>goto out; <------>} <------>err = device_add(&phydev->mdio.dev); <------>if (err) { <------><------>phydev_err(phydev, "failed to add\n"); <------><------>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) { <------>if (phydev->mii_ts) <------><------>unregister_mii_timestamper(phydev->mii_ts); <------>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) { <------>struct net_device *netdev = phydev->attached_dev; <------>if (up) <------><------>netif_carrier_on(netdev); <------>else <------><------>netif_carrier_off(netdev); <------>phydev->adjust_link(netdev); <------>if (phydev->mii_ts && phydev->mii_ts->link_state) <------><------>phydev->mii_ts->link_state(phydev->mii_ts, phydev); } /** * 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; <------>if (!dev) <------><------>return -EINVAL; <------>rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface); <------>if (rc) <------><------>return rc; <------>phy_prepare_link(phydev, handler); <------>if (phy_interrupt_is_valid(phydev)) <------><------>phy_request_interrupt(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 (phy_is_started(phydev)) <------><------>phy_stop(phydev); <------>if (phy_interrupt_is_valid(phydev)) <------><------>phy_free_interrupt(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) */ <------>int ret, val; <------>ret = phy_read_poll_timeout(phydev, MII_BMCR, val, !(val & BMCR_RESET), <------><------><------><------> 50000, 600000, true); <------>if (ret) <------><------>return ret; <------>/* 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) <------><------>return 0; <------>if (phydev->drv->soft_reset) { <------><------>ret = phydev->drv->soft_reset(phydev); <------><------>/* see comment in genphy_soft_reset for an explanation */ <------><------>if (!ret) <------><------><------>phydev->suspended = 0; <------>} <------>if (ret < 0) <------><------>return ret; <------>ret = phy_scan_fixups(phydev); <------>if (ret < 0) <------><------>return ret; <------>if (phydev->drv->config_init) { <------><------>ret = phydev->drv->config_init(phydev); <------><------>if (ret < 0) <------><------><------>return ret; <------>} <------>if (phydev->drv->config_intr) { <------><------>ret = phydev->drv->config_intr(phydev); <------><------>if (ret < 0) <------><------><------>return ret; <------>} <------>return 0; } 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)" char *phy_attached_info_irq(struct phy_device *phydev) { <------>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; <------>} <------>return kasprintf(GFP_KERNEL, "%s", irq_str); } EXPORT_SYMBOL(phy_attached_info_irq); void phy_attached_print(struct phy_device *phydev, const char *fmt, ...) { <------>const char *drv_name = phydev->drv ? phydev->drv->name : "unbound"; <------>char *irq_str = phy_attached_info_irq(phydev); <------>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); <------>} <------>kfree(irq_str); } EXPORT_SYMBOL(phy_attached_print); static void phy_sysfs_create_links(struct phy_device *phydev) { <------>struct net_device *dev = phydev->attached_dev; <------>int err; <------>if (!dev) <------><------>return; <------>err = sysfs_create_link(&phydev->mdio.dev.kobj, &dev->dev.kobj, <------><------><------><------>"attached_dev"); <------>if (err) <------><------>return; <------>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; } static ssize_t phy_standalone_show(struct device *dev, struct device_attribute *attr, <------><------> char *buf) { <------>struct phy_device *phydev = to_phy_device(dev); <------>return sprintf(buf, "%d\n", !phydev->attached_dev); } static DEVICE_ATTR_RO(phy_standalone); /** * phy_sfp_attach - attach the SFP bus to the PHY upstream network device * @upstream: pointer to the phy device * @bus: sfp bus representing cage being attached * * This is used to fill in the sfp_upstream_ops .attach member. */ void phy_sfp_attach(void *upstream, struct sfp_bus *bus) { <------>struct phy_device *phydev = upstream; <------>if (phydev->attached_dev) <------><------>phydev->attached_dev->sfp_bus = bus; <------>phydev->sfp_bus_attached = true; } EXPORT_SYMBOL(phy_sfp_attach); /** * phy_sfp_detach - detach the SFP bus from the PHY upstream network device * @upstream: pointer to the phy device * @bus: sfp bus representing cage being attached * * This is used to fill in the sfp_upstream_ops .detach member. */ void phy_sfp_detach(void *upstream, struct sfp_bus *bus) { <------>struct phy_device *phydev = upstream; <------>if (phydev->attached_dev) <------><------>phydev->attached_dev->sfp_bus = NULL; <------>phydev->sfp_bus_attached = false; } EXPORT_SYMBOL(phy_sfp_detach); /** * phy_sfp_probe - probe for a SFP cage attached to this PHY device * @phydev: Pointer to phy_device * @ops: SFP's upstream operations */ int phy_sfp_probe(struct phy_device *phydev, <------><------> const struct sfp_upstream_ops *ops) { <------>struct sfp_bus *bus; <------>int ret = 0; <------>if (phydev->mdio.dev.fwnode) { <------><------>bus = sfp_bus_find_fwnode(phydev->mdio.dev.fwnode); <------><------>if (IS_ERR(bus)) <------><------><------>return PTR_ERR(bus); <------><------>phydev->sfp_bus = bus; <------><------>ret = sfp_bus_add_upstream(bus, phydev, ops); <------><------>sfp_bus_put(bus); <------>} <------>return ret; } EXPORT_SYMBOL(phy_sfp_probe); /** * 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 mii_bus *bus = phydev->mdio.bus; <------>struct device *d = &phydev->mdio.dev; <------>struct module *ndev_owner = NULL; <------>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 (dev) <------><------>ndev_owner = dev->dev.parent->driver->owner; <------>if (ndev_owner != bus->owner && !try_module_get(bus->owner)) { <------><------>phydev_err(phydev, "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_c45_driver.mdiodrv.driver; <------><------>else <------><------><------>d->driver = &genphy_driver.mdiodrv.driver; <------><------>using_genphy = true; <------>} <------>if (!try_module_get(d->driver->owner)) { <------><------>phydev_err(phydev, "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; <------>if (dev) { <------><------>phydev->attached_dev = dev; <------><------>dev->phydev = phydev; <------><------>if (phydev->sfp_bus_attached) <------><------><------>dev->sfp_bus = phydev->sfp_bus; <------>} <------>/* 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; <------>phy_sysfs_create_links(phydev); <------>if (!phydev->attached_dev) { <------><------>err = sysfs_create_file(&phydev->mdio.dev.kobj, <------><------><------><------><------>&dev_attr_phy_standalone.attr); <------><------>if (err) <------><------><------>phydev_err(phydev, "error creating 'phy_standalone' sysfs entry\n"); <------>} <------>phydev->dev_flags |= flags; <------>phydev->interface = interface; <------>phydev->state = PHY_READY; <------>/* Port is set to PORT_TP by default and the actual PHY driver will set <------> * it to different value depending on the PHY configuration. If we have <------> * the generic PHY driver we can't figure it out, thus set the old <------> * legacy PORT_MII value. <------> */ <------>if (using_genphy) <------><------>phydev->port = PORT_MII; <------>/* Initial carrier state is off as the phy is about to be <------> * (re)initialized. <------> */ <------>if (dev) <------><------>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; <------>err = phy_disable_interrupts(phydev); <------>if (err) <------><------>return err; <------>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; <------>if (!dev) <------><------>return ERR_PTR(-EINVAL); <------>/* 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); static bool phy_driver_is_genphy_kind(struct phy_device *phydev, <------><------><------><------> struct device_driver *driver) { <------>struct device *d = &phydev->mdio.dev; <------>bool ret = false; <------>if (!phydev->drv) <------><------>return ret; <------>get_device(d); <------>ret = d->driver == driver; <------>put_device(d); <------>return ret; } bool phy_driver_is_genphy(struct phy_device *phydev) { <------>return phy_driver_is_genphy_kind(phydev, <------><------><------><------><------> &genphy_driver.mdiodrv.driver); } EXPORT_SYMBOL_GPL(phy_driver_is_genphy); bool phy_driver_is_genphy_10g(struct phy_device *phydev) { <------>return phy_driver_is_genphy_kind(phydev, <------><------><------><------><------> &genphy_c45_driver.mdiodrv.driver); } EXPORT_SYMBOL_GPL(phy_driver_is_genphy_10g); /** * phy_package_join - join a common PHY group * @phydev: target phy_device struct * @addr: cookie and PHY address for global register access * @priv_size: if non-zero allocate this amount of bytes for private data * * This joins a PHY group and provides a shared storage for all phydevs in * this group. This is intended to be used for packages which contain * more than one PHY, for example a quad PHY transceiver. * * The addr parameter serves as a cookie which has to have the same value * for all members of one group and as a PHY address to access generic * registers of a PHY package. Usually, one of the PHY addresses of the * different PHYs in the package provides access to these global registers. * The address which is given here, will be used in the phy_package_read() * and phy_package_write() convenience functions. If your PHY doesn't have * global registers you can just pick any of the PHY addresses. * * This will set the shared pointer of the phydev to the shared storage. * If this is the first call for a this cookie the shared storage will be * allocated. If priv_size is non-zero, the given amount of bytes are * allocated for the priv member. * * Returns < 1 on error, 0 on success. Esp. calling phy_package_join() * with the same cookie but a different priv_size is an error. */ int phy_package_join(struct phy_device *phydev, int addr, size_t priv_size) { <------>struct mii_bus *bus = phydev->mdio.bus; <------>struct phy_package_shared *shared; <------>int ret; <------>if (addr < 0 || addr >= PHY_MAX_ADDR) <------><------>return -EINVAL; <------>mutex_lock(&bus->shared_lock); <------>shared = bus->shared[addr]; <------>if (!shared) { <------><------>ret = -ENOMEM; <------><------>shared = kzalloc(sizeof(*shared), GFP_KERNEL); <------><------>if (!shared) <------><------><------>goto err_unlock; <------><------>if (priv_size) { <------><------><------>shared->priv = kzalloc(priv_size, GFP_KERNEL); <------><------><------>if (!shared->priv) <------><------><------><------>goto err_free; <------><------><------>shared->priv_size = priv_size; <------><------>} <------><------>shared->addr = addr; <------><------>refcount_set(&shared->refcnt, 1); <------><------>bus->shared[addr] = shared; <------>} else { <------><------>ret = -EINVAL; <------><------>if (priv_size && priv_size != shared->priv_size) <------><------><------>goto err_unlock; <------><------>refcount_inc(&shared->refcnt); <------>} <------>mutex_unlock(&bus->shared_lock); <------>phydev->shared = shared; <------>return 0; err_free: <------>kfree(shared); err_unlock: <------>mutex_unlock(&bus->shared_lock); <------>return ret; } EXPORT_SYMBOL_GPL(phy_package_join); /** * phy_package_leave - leave a common PHY group * @phydev: target phy_device struct * * This leaves a PHY group created by phy_package_join(). If this phydev * was the last user of the shared data between the group, this data is * freed. Resets the phydev->shared pointer to NULL. */ void phy_package_leave(struct phy_device *phydev) { <------>struct phy_package_shared *shared = phydev->shared; <------>struct mii_bus *bus = phydev->mdio.bus; <------>if (!shared) <------><------>return; <------>if (refcount_dec_and_mutex_lock(&shared->refcnt, &bus->shared_lock)) { <------><------>bus->shared[shared->addr] = NULL; <------><------>mutex_unlock(&bus->shared_lock); <------><------>kfree(shared->priv); <------><------>kfree(shared); <------>} <------>phydev->shared = NULL; } EXPORT_SYMBOL_GPL(phy_package_leave); static void devm_phy_package_leave(struct device *dev, void *res) { <------>phy_package_leave(*(struct phy_device **)res); } /** * devm_phy_package_join - resource managed phy_package_join() * @dev: device that is registering this PHY package * @phydev: target phy_device struct * @addr: cookie and PHY address for global register access * @priv_size: if non-zero allocate this amount of bytes for private data * * Managed phy_package_join(). Shared storage fetched by this function, * phy_package_leave() is automatically called on driver detach. See * phy_package_join() for more information. */ int devm_phy_package_join(struct device *dev, struct phy_device *phydev, <------><------><------> int addr, size_t priv_size) { <------>struct phy_device **ptr; <------>int ret; <------>ptr = devres_alloc(devm_phy_package_leave, sizeof(*ptr), <------><------><------> GFP_KERNEL); <------>if (!ptr) <------><------>return -ENOMEM; <------>ret = phy_package_join(phydev, addr, priv_size); <------>if (!ret) { <------><------>*ptr = phydev; <------><------>devres_add(dev, ptr); <------>} else { <------><------>devres_free(ptr); <------>} <------>return ret; } EXPORT_SYMBOL_GPL(devm_phy_package_join); /** * 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 = NULL; <------>struct mii_bus *bus; <------>if (phydev->sysfs_links) { <------><------>if (dev) <------><------><------>sysfs_remove_link(&dev->dev.kobj, "phydev"); <------><------>sysfs_remove_link(&phydev->mdio.dev.kobj, "attached_dev"); <------>} <------>if (!phydev->attached_dev) <------><------>sysfs_remove_file(&phydev->mdio.dev.kobj, <------><------><------><------> &dev_attr_phy_standalone.attr); <------>phy_suspend(phydev); <------>if (dev) { <------><------>phydev->attached_dev->phydev = NULL; <------><------>phydev->attached_dev = NULL; <------>} <------>phydev->phylink = NULL; <------>phy_led_triggers_unregister(phydev); <------>if (phydev->mdio.dev.driver) <------><------>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 (phy_driver_is_genphy(phydev) || <------> phy_driver_is_genphy_10g(phydev)) <------><------>device_release_driver(&phydev->mdio.dev); <------>/* Assert the reset signal */ <------>phy_device_reset(phydev, 1); <------>/* <------> * 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 (dev) <------><------>ndev_owner = dev->dev.parent->driver->owner; <------>if (ndev_owner != bus->owner) <------><------>module_put(bus->owner); } EXPORT_SYMBOL(phy_detach); int phy_suspend(struct phy_device *phydev) { <------>struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; <------>struct net_device *netdev = phydev->attached_dev; <------>struct phy_driver *phydrv = phydev->drv; <------>int ret; <------>if (phydev->suspended) <------><------>return 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 (!phydrv || !phydrv->suspend) <------><------>return 0; <------>ret = phydrv->suspend(phydev); <------>if (!ret) <------><------>phydev->suspended = true; <------>return ret; } EXPORT_SYMBOL(phy_suspend); int __phy_resume(struct phy_device *phydev) { <------>struct phy_driver *phydrv = phydev->drv; <------>int ret; <------>WARN_ON(!mutex_is_locked(&phydev->lock)); <------>if (!phydrv || !phydrv->resume) <------><------>return 0; <------>ret = phydrv->resume(phydev); <------>if (!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) { <------>int err, bmsr, changed = 0; <------>u32 adv; <------>/* Only allow advertising what this PHY supports */ <------>linkmode_and(phydev->advertising, phydev->advertising, <------><------> phydev->supported); <------>adv = linkmode_adv_to_mii_adv_t(phydev->advertising); <------>/* Setup standard advertisement */ <------>err = phy_modify_changed(phydev, MII_ADVERTISE, <------><------><------><------> ADVERTISE_ALL | ADVERTISE_100BASE4 | <------><------><------><------> ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM, <------><------><------><------> adv); <------>if (err < 0) <------><------>return err; <------>if (err > 0) <------><------>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; <------>adv = linkmode_adv_to_mii_ctrl1000_t(phydev->advertising); <------>err = phy_modify_changed(phydev, MII_CTRL1000, <------><------><------><------> ADVERTISE_1000FULL | ADVERTISE_1000HALF, <------><------><------><------> adv); <------>if (err < 0) <------><------>return err; <------>if (err > 0) <------><------>changed = 1; <------>return changed; } /** * genphy_c37_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. This function is intended * for Clause 37 1000Base-X mode. */ static int genphy_c37_config_advert(struct phy_device *phydev) { <------>u16 adv = 0; <------>/* Only allow advertising what this PHY supports */ <------>linkmode_and(phydev->advertising, phydev->advertising, <------><------> phydev->supported); <------>if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, <------><------><------> phydev->advertising)) <------><------>adv |= ADVERTISE_1000XFULL; <------>if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, <------><------><------> phydev->advertising)) <------><------>adv |= ADVERTISE_1000XPAUSE; <------>if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, <------><------><------> phydev->advertising)) <------><------>adv |= ADVERTISE_1000XPSE_ASYM; <------>return phy_modify_changed(phydev, MII_ADVERTISE, <------><------><------><------> ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE | <------><------><------><------> ADVERTISE_1000XHALF | ADVERTISE_1000XPSE_ASYM, <------><------><------><------> adv); } /** * 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. */ int genphy_config_eee_advert(struct phy_device *phydev) { <------>int err; <------>/* Nothing to disable */ <------>if (!phydev->eee_broken_modes) <------><------>return 0; <------>err = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, <------><------><------><------> phydev->eee_broken_modes, 0); <------>/* If the call failed, we assume that EEE is not supported */ <------>return err < 0 ? 0 : err; } EXPORT_SYMBOL(genphy_config_eee_advert); /** * 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); static int genphy_setup_master_slave(struct phy_device *phydev) { <------>u16 ctl = 0; <------>if (!phydev->is_gigabit_capable) <------><------>return 0; <------>switch (phydev->master_slave_set) { <------>case MASTER_SLAVE_CFG_MASTER_PREFERRED: <------><------>ctl |= CTL1000_PREFER_MASTER; <------><------>break; <------>case MASTER_SLAVE_CFG_SLAVE_PREFERRED: <------><------>break; <------>case MASTER_SLAVE_CFG_MASTER_FORCE: <------><------>ctl |= CTL1000_AS_MASTER; <------><------>fallthrough; <------>case MASTER_SLAVE_CFG_SLAVE_FORCE: <------><------>ctl |= CTL1000_ENABLE_MASTER; <------><------>break; <------>case MASTER_SLAVE_CFG_UNKNOWN: <------>case MASTER_SLAVE_CFG_UNSUPPORTED: <------><------>return 0; <------>default: <------><------>phydev_warn(phydev, "Unsupported Master/Slave mode\n"); <------><------>return -EOPNOTSUPP; <------>} <------>return phy_modify_changed(phydev, MII_CTRL1000, <------><------><------><------> (CTL1000_ENABLE_MASTER | CTL1000_AS_MASTER | <------><------><------><------> CTL1000_PREFER_MASTER), ctl); } static int genphy_read_master_slave(struct phy_device *phydev) { <------>int cfg, state; <------>int val; <------>if (!phydev->is_gigabit_capable) { <------><------>phydev->master_slave_get = MASTER_SLAVE_CFG_UNSUPPORTED; <------><------>phydev->master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; <------><------>return 0; <------>} <------>phydev->master_slave_get = MASTER_SLAVE_CFG_UNKNOWN; <------>phydev->master_slave_state = MASTER_SLAVE_STATE_UNKNOWN; <------>val = phy_read(phydev, MII_CTRL1000); <------>if (val < 0) <------><------>return val; <------>if (val & CTL1000_ENABLE_MASTER) { <------><------>if (val & CTL1000_AS_MASTER) <------><------><------>cfg = MASTER_SLAVE_CFG_MASTER_FORCE; <------><------>else <------><------><------>cfg = MASTER_SLAVE_CFG_SLAVE_FORCE; <------>} else { <------><------>if (val & CTL1000_PREFER_MASTER) <------><------><------>cfg = MASTER_SLAVE_CFG_MASTER_PREFERRED; <------><------>else <------><------><------>cfg = MASTER_SLAVE_CFG_SLAVE_PREFERRED; <------>} <------>val = phy_read(phydev, MII_STAT1000); <------>if (val < 0) <------><------>return val; <------>if (val & LPA_1000MSFAIL) { <------><------>state = MASTER_SLAVE_STATE_ERR; <------>} else if (phydev->link) { <------><------>/* this bits are valid only for active link */ <------><------>if (val & LPA_1000MSRES) <------><------><------>state = MASTER_SLAVE_STATE_MASTER; <------><------>else <------><------><------>state = MASTER_SLAVE_STATE_SLAVE; <------>} else { <------><------>state = MASTER_SLAVE_STATE_UNKNOWN; <------>} <------>phydev->master_slave_get = cfg; <------>phydev->master_slave_state = state; <------>return 0; } /** * 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_check_and_restart_aneg - Enable and restart auto-negotiation * @phydev: target phy_device struct * @restart: whether aneg restart is requested * * Check, and restart auto-negotiation if needed. */ int genphy_check_and_restart_aneg(struct phy_device *phydev, bool restart) { <------>int ret; <------>if (!restart) { <------><------>/* Advertisement hasn't changed, but maybe aneg was never on to <------><------> * begin with? Or maybe phy was isolated? <------><------> */ <------><------>ret = phy_read(phydev, MII_BMCR); <------><------>if (ret < 0) <------><------><------>return ret; <------><------>if (!(ret & BMCR_ANENABLE) || (ret & BMCR_ISOLATE)) <------><------><------>restart = true; <------>} <------>if (restart) <------><------>return genphy_restart_aneg(phydev); <------>return 0; } EXPORT_SYMBOL(genphy_check_and_restart_aneg); /** * __genphy_config_aneg - restart auto-negotiation or write BMCR * @phydev: target phy_device struct * @changed: whether autoneg is requested * * 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, bool changed) { <------>int err; <------>if (genphy_config_eee_advert(phydev)) <------><------>changed = true; <------>err = genphy_setup_master_slave(phydev); <------>if (err < 0) <------><------>return err; <------>else if (err) <------><------>changed = true; <------>if (AUTONEG_ENABLE != phydev->autoneg) <------><------>return genphy_setup_forced(phydev); <------>err = genphy_config_advert(phydev); <------>if (err < 0) /* error */ <------><------>return err; <------>else if (err) <------><------>changed = true; <------>return genphy_check_and_restart_aneg(phydev, changed); } EXPORT_SYMBOL(__genphy_config_aneg); /** * genphy_c37_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. This function is intended * for use with Clause 37 1000Base-X mode. */ int genphy_c37_config_aneg(struct phy_device *phydev) { <------>int err, changed; <------>if (phydev->autoneg != AUTONEG_ENABLE) <------><------>return genphy_setup_forced(phydev); <------>err = phy_modify(phydev, MII_BMCR, BMCR_SPEED1000 | BMCR_SPEED100, <------><------><------> BMCR_SPEED1000); <------>if (err) <------><------>return err; <------>changed = genphy_c37_config_advert(phydev); <------>if (changed < 0) /* error */ <------><------>return changed; <------>if (!changed) { <------><------>/* 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_c37_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 = 0, bmcr; <------>bmcr = phy_read(phydev, MII_BMCR); <------>if (bmcr < 0) <------><------>return bmcr; <------>/* Autoneg is being started, therefore disregard BMSR value and <------> * report link as down. <------> */ <------>if (bmcr & BMCR_ANRESTART) <------><------>goto done; <------>/* The link state is latched low so that momentary link <------> * drops can be detected. Do not double-read the status <------> * in polling mode to detect such short link drops except <------> * the link was already down. <------> */ <------>if (!phy_polling_mode(phydev) || !phydev->link) { <------><------>status = phy_read(phydev, MII_BMSR); <------><------>if (status < 0) <------><------><------>return status; <------><------>else if (status & BMSR_LSTATUS) <------><------><------>goto done; <------>} <------>/* Read link and autonegotiation status */ <------>status = phy_read(phydev, MII_BMSR); <------>if (status < 0) <------><------>return status; done: <------>phydev->link = status & BMSR_LSTATUS ? 1 : 0; <------>phydev->autoneg_complete = status & BMSR_ANEGCOMPLETE ? 1 : 0; <------>/* Consider the case that autoneg was started and "aneg complete" <------> * bit has been reset, but "link up" bit not yet. <------> */ <------>if (phydev->autoneg == AUTONEG_ENABLE && !phydev->autoneg_complete) <------><------>phydev->link = 0; <------>return 0; } EXPORT_SYMBOL(genphy_update_link); int genphy_read_lpa(struct phy_device *phydev) { <------>int lpa, lpagb; <------>if (phydev->autoneg == AUTONEG_ENABLE) { <------><------>if (!phydev->autoneg_complete) { <------><------><------>mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, <------><------><------><------><------><------><------>0); <------><------><------>mii_lpa_mod_linkmode_lpa_t(phydev->lp_advertising, 0); <------><------><------>return 0; <------><------>} <------><------>if (phydev->is_gigabit_capable) { <------><------><------>lpagb = phy_read(phydev, MII_STAT1000); <------><------><------>if (lpagb < 0) <------><------><------><------>return lpagb; <------><------><------>if (lpagb & LPA_1000MSFAIL) { <------><------><------><------>int adv = phy_read(phydev, MII_CTRL1000); <------><------><------><------>if (adv < 0) <------><------><------><------><------>return adv; <------><------><------><------>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; <------><------><------>} <------><------><------>mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, <------><------><------><------><------><------><------>lpagb); <------><------>} <------><------>lpa = phy_read(phydev, MII_LPA); <------><------>if (lpa < 0) <------><------><------>return lpa; <------><------>mii_lpa_mod_linkmode_lpa_t(phydev->lp_advertising, lpa); <------>} else { <------><------>linkmode_zero(phydev->lp_advertising); <------>} <------>return 0; } EXPORT_SYMBOL(genphy_read_lpa); /** * genphy_read_status_fixed - read the link parameters for !aneg mode * @phydev: target phy_device struct * * Read the current duplex and speed state for a PHY operating with * autonegotiation disabled. */ int genphy_read_status_fixed(struct phy_device *phydev) { <------>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; <------>return 0; } EXPORT_SYMBOL(genphy_read_status_fixed); /** * 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 err, old_link = phydev->link; <------>/* Update the link, but return if there was an error */ <------>err = genphy_update_link(phydev); <------>if (err) <------><------>return err; <------>/* why bother the PHY if nothing can have changed */ <------>if (phydev->autoneg == AUTONEG_ENABLE && old_link && phydev->link) <------><------>return 0; <------>phydev->speed = SPEED_UNKNOWN; <------>phydev->duplex = DUPLEX_UNKNOWN; <------>phydev->pause = 0; <------>phydev->asym_pause = 0; <------>err = genphy_read_master_slave(phydev); <------>if (err < 0) <------><------>return err; <------>err = genphy_read_lpa(phydev); <------>if (err < 0) <------><------>return err; <------>if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) { <------><------>phy_resolve_aneg_linkmode(phydev); <------>} else if (phydev->autoneg == AUTONEG_DISABLE) { <------><------>err = genphy_read_status_fixed(phydev); <------><------>if (err < 0) <------><------><------>return err; <------>} <------>return 0; } EXPORT_SYMBOL(genphy_read_status); /** * genphy_c37_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. This function is for Clause 37 1000Base-X mode. */ int genphy_c37_read_status(struct phy_device *phydev) { <------>int lpa, err, old_link = phydev->link; <------>/* Update the link, but return if there was an error */ <------>err = genphy_update_link(phydev); <------>if (err) <------><------>return err; <------>/* why bother the PHY if nothing can have changed */ <------>if (phydev->autoneg == AUTONEG_ENABLE && old_link && phydev->link) <------><------>return 0; <------>phydev->duplex = DUPLEX_UNKNOWN; <------>phydev->pause = 0; <------>phydev->asym_pause = 0; <------>if (phydev->autoneg == AUTONEG_ENABLE && phydev->autoneg_complete) { <------><------>lpa = phy_read(phydev, MII_LPA); <------><------>if (lpa < 0) <------><------><------>return lpa; <------><------>linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, <------><------><------><------> phydev->lp_advertising, lpa & LPA_LPACK); <------><------>linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, <------><------><------><------> phydev->lp_advertising, lpa & LPA_1000XFULL); <------><------>linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, <------><------><------><------> phydev->lp_advertising, lpa & LPA_1000XPAUSE); <------><------>linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, <------><------><------><------> phydev->lp_advertising, <------><------><------><------> lpa & LPA_1000XPAUSE_ASYM); <------><------>phy_resolve_aneg_linkmode(phydev); <------>} else if (phydev->autoneg == AUTONEG_DISABLE) { <------><------>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; <------>} <------>return 0; } EXPORT_SYMBOL(genphy_c37_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) { <------>u16 res = BMCR_RESET; <------>int ret; <------>if (phydev->autoneg == AUTONEG_ENABLE) <------><------>res |= BMCR_ANRESTART; <------>ret = phy_modify(phydev, MII_BMCR, BMCR_ISOLATE, res); <------>if (ret < 0) <------><------>return ret; <------>/* Clause 22 states that setting bit BMCR_RESET sets control registers <------> * to their default value. Therefore the POWER DOWN bit is supposed to <------> * be cleared after soft reset. <------> */ <------>phydev->suspended = 0; <------>ret = phy_poll_reset(phydev); <------>if (ret) <------><------>return ret; <------>/* BMCR may be reset to defaults */ <------>if (phydev->autoneg == AUTONEG_DISABLE) <------><------>ret = genphy_setup_forced(phydev); <------>return ret; } EXPORT_SYMBOL(genphy_soft_reset); /** * genphy_read_abilities - read PHY abilities from Clause 22 registers * @phydev: target phy_device struct * * Description: Reads the PHY's abilities and populates * phydev->supported accordingly. * * Returns: 0 on success, < 0 on failure */ int genphy_read_abilities(struct phy_device *phydev) { <------>int val; <------>linkmode_set_bit_array(phy_basic_ports_array, <------><------><------> ARRAY_SIZE(phy_basic_ports_array), <------><------><------> phydev->supported); <------>val = phy_read(phydev, MII_BMSR); <------>if (val < 0) <------><------>return val; <------>linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported, <------><------><------> val & BMSR_ANEGCAPABLE); <------>linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, phydev->supported, <------><------><------> val & BMSR_100FULL); <------>linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, phydev->supported, <------><------><------> val & BMSR_100HALF); <------>linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, phydev->supported, <------><------><------> val & BMSR_10FULL); <------>linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, phydev->supported, <------><------><------> val & BMSR_10HALF); <------>if (val & BMSR_ESTATEN) { <------><------>val = phy_read(phydev, MII_ESTATUS); <------><------>if (val < 0) <------><------><------>return val; <------><------>linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, <------><------><------><------> phydev->supported, val & ESTATUS_1000_TFULL); <------><------>linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, <------><------><------><------> phydev->supported, val & ESTATUS_1000_THALF); <------><------>linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, <------><------><------><------> phydev->supported, val & ESTATUS_1000_XFULL); <------>} <------>return 0; } EXPORT_SYMBOL(genphy_read_abilities); /* 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); /** * 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) { <------>linkmode_clear_bit(link_mode, phydev->supported); <------>phy_advertise_supported(phydev); } EXPORT_SYMBOL(phy_remove_link_mode); static void phy_copy_pause_bits(unsigned long *dst, unsigned long *src) { <------>linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, dst, <------><------>linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, src)); <------>linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, dst, <------><------>linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, src)); } /** * phy_advertise_supported - Advertise all supported modes * @phydev: target phy_device struct * * Description: Called to advertise all supported modes, doesn't touch * pause mode advertising. */ void phy_advertise_supported(struct phy_device *phydev) { <------>__ETHTOOL_DECLARE_LINK_MODE_MASK(new); <------>linkmode_copy(new, phydev->supported); <------>phy_copy_pause_bits(new, phydev->advertising); <------>linkmode_copy(phydev->advertising, new); } EXPORT_SYMBOL(phy_advertise_supported); /** * 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) { <------>linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, phydev->supported); <------>phy_copy_pause_bits(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) { <------>phy_copy_pause_bits(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) { <------>linkmode_clear_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->supported); <------>if (rx && tx && autoneg) <------><------>linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, <------><------><------><------> phydev->supported); <------>linkmode_copy(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) { <------>__ETHTOOL_DECLARE_LINK_MODE_MASK(oldadv); <------>linkmode_copy(oldadv, phydev->advertising); <------>linkmode_set_pause(phydev->advertising, tx, rx); <------>if (!linkmode_equal(oldadv, phydev->advertising) && <------> 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 (!linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, <------><------><------> phydev->supported) && pp->rx_pause) <------><------>return false; <------>if (!linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, <------><------><------> phydev->supported) && <------> pp->rx_pause != pp->tx_pause) <------><------>return false; <------>return true; } EXPORT_SYMBOL(phy_validate_pause); /** * phy_get_pause - resolve negotiated pause modes * @phydev: phy_device struct * @tx_pause: pointer to bool to indicate whether transmit pause should be * enabled. * @rx_pause: pointer to bool to indicate whether receive pause should be * enabled. * * Resolve and return the flow control modes according to the negotiation * result. This includes checking that we are operating in full duplex mode. * See linkmode_resolve_pause() for further details. */ void phy_get_pause(struct phy_device *phydev, bool *tx_pause, bool *rx_pause) { <------>if (phydev->duplex != DUPLEX_FULL) { <------><------>*tx_pause = false; <------><------>*rx_pause = false; <------><------>return; <------>} <------>return linkmode_resolve_pause(phydev->advertising, <------><------><------><------> phydev->lp_advertising, <------><------><------><------> tx_pause, rx_pause); } EXPORT_SYMBOL(phy_get_pause); #if IS_ENABLED(CONFIG_OF_MDIO) static int phy_get_int_delay_property(struct device *dev, const char *name) { <------>s32 int_delay; <------>int ret; <------>ret = device_property_read_u32(dev, name, &int_delay); <------>if (ret) <------><------>return ret; <------>return int_delay; } #else static int phy_get_int_delay_property(struct device *dev, const char *name) { <------>return -EINVAL; } #endif /** * phy_get_delay_index - returns the index of the internal delay * @phydev: phy_device struct * @dev: pointer to the devices device struct * @delay_values: array of delays the PHY supports * @size: the size of the delay array * @is_rx: boolean to indicate to get the rx internal delay * * Returns the index within the array of internal delay passed in. * If the device property is not present then the interface type is checked * if the interface defines use of internal delay then a 1 is returned otherwise * a 0 is returned. * The array must be in ascending order. If PHY does not have an ascending order * array then size = 0 and the value of the delay property is returned. * Return -EINVAL if the delay is invalid or cannot be found. */ s32 phy_get_internal_delay(struct phy_device *phydev, struct device *dev, <------><------><------> const int *delay_values, int size, bool is_rx) { <------>s32 delay; <------>int i; <------>if (is_rx) { <------><------>delay = phy_get_int_delay_property(dev, "rx-internal-delay-ps"); <------><------>if (delay < 0 && size == 0) { <------><------><------>if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID || <------><------><------> phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) <------><------><------><------>return 1; <------><------><------>else <------><------><------><------>return 0; <------><------>} <------>} else { <------><------>delay = phy_get_int_delay_property(dev, "tx-internal-delay-ps"); <------><------>if (delay < 0 && size == 0) { <------><------><------>if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID || <------><------><------> phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) <------><------><------><------>return 1; <------><------><------>else <------><------><------><------>return 0; <------><------>} <------>} <------>if (delay < 0) <------><------>return delay; <------>if (delay && size == 0) <------><------>return delay; <------>if (delay < delay_values[0] || delay > delay_values[size - 1]) { <------><------>phydev_err(phydev, "Delay %d is out of range\n", delay); <------><------>return -EINVAL; <------>} <------>if (delay == delay_values[0]) <------><------>return 0; <------>for (i = 1; i < size; i++) { <------><------>if (delay == delay_values[i]) <------><------><------>return i; <------><------>/* Find an approximate index by looking up the table */ <------><------>if (delay > delay_values[i - 1] && <------><------> delay < delay_values[i]) { <------><------><------>if (delay - delay_values[i - 1] < <------><------><------> delay_values[i] - delay) <------><------><------><------>return i - 1; <------><------><------>else <------><------><------><------>return i; <------><------>} <------>} <------>phydev_err(phydev, "error finding internal delay index for %d\n", <------><------> delay); <------>return -EINVAL; } EXPORT_SYMBOL(phy_get_internal_delay); static bool phy_drv_supports_irq(struct phy_driver *phydrv) { <------>return phydrv->config_intr && phydrv->ack_interrupt; } /** * 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); <------>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 (!phy_drv_supports_irq(phydrv) && phy_interrupt_is_valid(phydev)) <------><------>phydev->irq = PHY_POLL; <------>if (phydrv->flags & PHY_IS_INTERNAL) <------><------>phydev->is_internal = true; <------>mutex_lock(&phydev->lock); <------>/* Deassert the reset signal */ <------>phy_device_reset(phydev, 0); <------>if (phydev->drv->probe) { <------><------>err = phydev->drv->probe(phydev); <------><------>if (err) <------><------><------>goto out; <------>} <------>/* Start out supporting everything. Eventually, <------> * a controller will attach, and may modify one <------> * or both of these values <------> */ <------>if (phydrv->features) { <------><------>linkmode_copy(phydev->supported, phydrv->features); <------>} else if (phydrv->get_features) { <------><------>err = phydrv->get_features(phydev); <------>} else if (phydev->is_c45) { <------><------>err = genphy_c45_pma_read_abilities(phydev); <------>} else { <------><------>err = genphy_read_abilities(phydev); <------>} <------>if (err) <------><------>goto out; <------>if (!linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, <------><------><------> phydev->supported)) <------><------>phydev->autoneg = 0; <------>if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, <------><------><------> phydev->supported)) <------><------>phydev->is_gigabit_capable = 1; <------>if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, <------><------><------> phydev->supported)) <------><------>phydev->is_gigabit_capable = 1; <------>of_set_phy_supported(phydev); <------>phy_advertise_supported(phydev); <------>/* 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, phydev->supported) && <------> !test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, phydev->supported)) { <------><------>linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, <------><------><------><------> phydev->supported); <------><------>linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, <------><------><------><------> phydev->supported); <------>} <------>/* Set the state to READY by default */ <------>phydev->state = PHY_READY; out: <------>/* Assert the reset signal */ <------>if (err) <------><------>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); <------>sfp_bus_del_upstream(phydev->sfp_bus); <------>phydev->sfp_bus = NULL; <------>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; <------>/* Either the features are hard coded, or dynamically <------> * determined. It cannot be both. <------> */ <------>if (WARN_ON(new_driver->features && new_driver->get_features)) { <------><------>pr_err("%s: features and get_features must not both be set\n", <------><------> new_driver->name); <------><------>return -EINVAL; <------>} <------>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; <------>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", <------>.get_features = genphy_read_abilities, <------>.suspend = genphy_suspend, <------>.resume = genphy_resume, <------>.set_loopback = genphy_loopback, }; static const struct ethtool_phy_ops phy_ethtool_phy_ops = { <------>.get_sset_count = phy_ethtool_get_sset_count, <------>.get_strings = phy_ethtool_get_strings, <------>.get_stats = phy_ethtool_get_stats, <------>.start_cable_test = phy_start_cable_test, <------>.start_cable_test_tdr = phy_start_cable_test_tdr, }; static int __init phy_init(void) { <------>int rc; <------>rc = mdio_bus_init(); <------>if (rc) <------><------>return rc; <------>ethtool_set_ethtool_phy_ops(&phy_ethtool_phy_ops); <------>features_init(); <------>rc = phy_driver_register(&genphy_c45_driver, THIS_MODULE); <------>if (rc) <------><------>goto err_c45; <------>rc = phy_driver_register(&genphy_driver, THIS_MODULE); <------>if (rc) { <------><------>phy_driver_unregister(&genphy_c45_driver); err_c45: <------><------>mdio_bus_exit(); <------>} <------>return rc; } static void __exit phy_exit(void) { <------>phy_driver_unregister(&genphy_c45_driver); <------>phy_driver_unregister(&genphy_driver); <------>mdio_bus_exit(); <------>ethtool_set_ethtool_phy_ops(NULL); } subsys_initcall(phy_init); module_exit(phy_exit);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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