| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Russell King | 8372 | 89.74% | 62 | 65.26% |
| Ioana Ciornei | 332 | 3.56% | 4 | 4.21% |
| Jose Abreu | 254 | 2.72% | 3 | 3.16% |
| Florian Fainelli | 125 | 1.34% | 7 | 7.37% |
| Baruch Siach | 74 | 0.79% | 1 | 1.05% |
| Vladimir Oltean | 44 | 0.47% | 3 | 3.16% |
| Hauke Mehrtens | 30 | 0.32% | 1 | 1.05% |
| Heiner Kallweit | 28 | 0.30% | 2 | 2.11% |
| René van Dorst | 18 | 0.19% | 1 | 1.05% |
| Arseny Solokha | 12 | 0.13% | 1 | 1.05% |
| Andrew Lunn | 11 | 0.12% | 2 | 2.11% |
| David S. Miller | 9 | 0.10% | 1 | 1.05% |
| Antoine Tenart | 8 | 0.09% | 1 | 1.05% |
| Alex Marginean | 3 | 0.03% | 1 | 1.05% |
| Colin Ian King | 3 | 0.03% | 1 | 1.05% |
| Dmitry Torokhov | 2 | 0.02% | 1 | 1.05% |
| Gustavo A. R. Silva | 2 | 0.02% | 1 | 1.05% |
| Dan Carpenter | 1 | 0.01% | 1 | 1.05% |
| Wei Yongjun | 1 | 0.01% | 1 | 1.05% |
| Total | 9329 | 95 |
// SPDX-License-Identifier: GPL-2.0 /* * phylink models the MAC to optional PHY connection, supporting * technologies such as SFP cages where the PHY is hot-pluggable. * * Copyright (C) 2015 Russell King */ #include <linux/ethtool.h> #include <linux/export.h> #include <linux/gpio/consumer.h> #include <linux/netdevice.h> #include <linux/of.h> #include <linux/of_mdio.h> #include <linux/phy.h> #include <linux/phy_fixed.h> #include <linux/phylink.h> #include <linux/rtnetlink.h> #include <linux/spinlock.h> #include <linux/timer.h> #include <linux/workqueue.h> #include "sfp.h" #include "swphy.h" #define SUPPORTED_INTERFACES \ (SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_FIBRE | \ SUPPORTED_BNC | SUPPORTED_AUI | SUPPORTED_Backplane) #define ADVERTISED_INTERFACES \ (ADVERTISED_TP | ADVERTISED_MII | ADVERTISED_FIBRE | \ ADVERTISED_BNC | ADVERTISED_AUI | ADVERTISED_Backplane) enum { PHYLINK_DISABLE_STOPPED, PHYLINK_DISABLE_LINK, }; /** * struct phylink - internal data type for phylink */ struct phylink { /* private: */ struct net_device *netdev; const struct phylink_mac_ops *mac_ops; const struct phylink_pcs_ops *pcs_ops; struct phylink_config *config; struct device *dev; unsigned int old_link_state:1; unsigned long phylink_disable_state; /* bitmask of disables */ struct phy_device *phydev; phy_interface_t link_interface; /* PHY_INTERFACE_xxx */ u8 cfg_link_an_mode; /* MLO_AN_xxx */ u8 cur_link_an_mode; u8 link_port; /* The current non-phy ethtool port */ __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); /* The link configuration settings */ struct phylink_link_state link_config; /* The current settings */ phy_interface_t cur_interface; struct gpio_desc *link_gpio; unsigned int link_irq; struct timer_list link_poll; void (*get_fixed_state)(struct net_device *dev, struct phylink_link_state *s); struct mutex state_mutex; struct phylink_link_state phy_state; struct work_struct resolve; bool mac_link_dropped; struct sfp_bus *sfp_bus; bool sfp_may_have_phy; __ETHTOOL_DECLARE_LINK_MODE_MASK(sfp_support); u8 sfp_port; }; #define phylink_printk(level, pl, fmt, ...) \ do { \ if ((pl)->config->type == PHYLINK_NETDEV) \ netdev_printk(level, (pl)->netdev, fmt, ##__VA_ARGS__); \ else if ((pl)->config->type == PHYLINK_DEV) \ dev_printk(level, (pl)->dev, fmt, ##__VA_ARGS__); \ } while (0) #define phylink_err(pl, fmt, ...) \ phylink_printk(KERN_ERR, pl, fmt, ##__VA_ARGS__) #define phylink_warn(pl, fmt, ...) \ phylink_printk(KERN_WARNING, pl, fmt, ##__VA_ARGS__) #define phylink_info(pl, fmt, ...) \ phylink_printk(KERN_INFO, pl, fmt, ##__VA_ARGS__) #if defined(CONFIG_DYNAMIC_DEBUG) #define phylink_dbg(pl, fmt, ...) \ do { \ if ((pl)->config->type == PHYLINK_NETDEV) \ netdev_dbg((pl)->netdev, fmt, ##__VA_ARGS__); \ else if ((pl)->config->type == PHYLINK_DEV) \ dev_dbg((pl)->dev, fmt, ##__VA_ARGS__); \ } while (0) #elif defined(DEBUG) #define phylink_dbg(pl, fmt, ...) \ phylink_printk(KERN_DEBUG, pl, fmt, ##__VA_ARGS__) #else #define phylink_dbg(pl, fmt, ...) \ ({ \ if (0) \ phylink_printk(KERN_DEBUG, pl, fmt, ##__VA_ARGS__); \ }) #endif /** * phylink_set_port_modes() - set the port type modes in the ethtool mask * @mask: ethtool link mode mask * * Sets all the port type modes in the ethtool mask. MAC drivers should * use this in their 'validate' callback. */ void phylink_set_port_modes(unsigned long *mask) { phylink_set(mask, TP); phylink_set(mask, AUI); phylink_set(mask, MII); phylink_set(mask, FIBRE); phylink_set(mask, BNC); phylink_set(mask, Backplane); } EXPORT_SYMBOL_GPL(phylink_set_port_modes); static int phylink_is_empty_linkmode(const unsigned long *linkmode) { __ETHTOOL_DECLARE_LINK_MODE_MASK(tmp) = { 0, }; phylink_set_port_modes(tmp); phylink_set(tmp, Autoneg); phylink_set(tmp, Pause); phylink_set(tmp, Asym_Pause); return linkmode_subset(linkmode, tmp); } static const char *phylink_an_mode_str(unsigned int mode) { static const char *modestr[] = { [MLO_AN_PHY] = "phy", [MLO_AN_FIXED] = "fixed", [MLO_AN_INBAND] = "inband", }; return mode < ARRAY_SIZE(modestr) ? modestr[mode] : "unknown"; } static int phylink_validate(struct phylink *pl, unsigned long *supported, struct phylink_link_state *state) { pl->mac_ops->validate(pl->config, supported, state); return phylink_is_empty_linkmode(supported) ? -EINVAL : 0; } static int phylink_parse_fixedlink(struct phylink *pl, struct fwnode_handle *fwnode) { struct fwnode_handle *fixed_node; const struct phy_setting *s; struct gpio_desc *desc; u32 speed; int ret; fixed_node = fwnode_get_named_child_node(fwnode, "fixed-link"); if (fixed_node) { ret = fwnode_property_read_u32(fixed_node, "speed", &speed); pl->link_config.speed = speed; pl->link_config.duplex = DUPLEX_HALF; if (fwnode_property_read_bool(fixed_node, "full-duplex")) pl->link_config.duplex = DUPLEX_FULL; /* We treat the "pause" and "asym-pause" terminology as * defining the link partner's ability. */ if (fwnode_property_read_bool(fixed_node, "pause")) __set_bit(ETHTOOL_LINK_MODE_Pause_BIT, pl->link_config.lp_advertising); if (fwnode_property_read_bool(fixed_node, "asym-pause")) __set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, pl->link_config.lp_advertising); if (ret == 0) { desc = fwnode_gpiod_get_index(fixed_node, "link", 0, GPIOD_IN, "?"); if (!IS_ERR(desc)) pl->link_gpio = desc; else if (desc == ERR_PTR(-EPROBE_DEFER)) ret = -EPROBE_DEFER; } fwnode_handle_put(fixed_node); if (ret) return ret; } else { u32 prop[5]; ret = fwnode_property_read_u32_array(fwnode, "fixed-link", NULL, 0); if (ret != ARRAY_SIZE(prop)) { phylink_err(pl, "broken fixed-link?\n"); return -EINVAL; } ret = fwnode_property_read_u32_array(fwnode, "fixed-link", prop, ARRAY_SIZE(prop)); if (!ret) { pl->link_config.duplex = prop[1] ? DUPLEX_FULL : DUPLEX_HALF; pl->link_config.speed = prop[2]; if (prop[3]) __set_bit(ETHTOOL_LINK_MODE_Pause_BIT, pl->link_config.lp_advertising); if (prop[4]) __set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, pl->link_config.lp_advertising); } } if (pl->link_config.speed > SPEED_1000 && pl->link_config.duplex != DUPLEX_FULL) phylink_warn(pl, "fixed link specifies half duplex for %dMbps link?\n", pl->link_config.speed); bitmap_fill(pl->supported, __ETHTOOL_LINK_MODE_MASK_NBITS); linkmode_copy(pl->link_config.advertising, pl->supported); phylink_validate(pl, pl->supported, &pl->link_config); s = phy_lookup_setting(pl->link_config.speed, pl->link_config.duplex, pl->supported, true); linkmode_zero(pl->supported); phylink_set(pl->supported, MII); phylink_set(pl->supported, Pause); phylink_set(pl->supported, Asym_Pause); if (s) { __set_bit(s->bit, pl->supported); } else { phylink_warn(pl, "fixed link %s duplex %dMbps not recognised\n", pl->link_config.duplex == DUPLEX_FULL ? "full" : "half", pl->link_config.speed); } linkmode_and(pl->link_config.advertising, pl->link_config.advertising, pl->supported); pl->link_config.link = 1; pl->link_config.an_complete = 1; return 0; } static int phylink_parse_mode(struct phylink *pl, struct fwnode_handle *fwnode) { struct fwnode_handle *dn; const char *managed; dn = fwnode_get_named_child_node(fwnode, "fixed-link"); if (dn || fwnode_property_present(fwnode, "fixed-link")) pl->cfg_link_an_mode = MLO_AN_FIXED; fwnode_handle_put(dn); if (fwnode_property_read_string(fwnode, "managed", &managed) == 0 && strcmp(managed, "in-band-status") == 0) { if (pl->cfg_link_an_mode == MLO_AN_FIXED) { phylink_err(pl, "can't use both fixed-link and in-band-status\n"); return -EINVAL; } linkmode_zero(pl->supported); phylink_set(pl->supported, MII); phylink_set(pl->supported, Autoneg); phylink_set(pl->supported, Asym_Pause); phylink_set(pl->supported, Pause); pl->link_config.an_enabled = true; pl->cfg_link_an_mode = MLO_AN_INBAND; switch (pl->link_config.interface) { case PHY_INTERFACE_MODE_SGMII: case PHY_INTERFACE_MODE_QSGMII: phylink_set(pl->supported, 10baseT_Half); phylink_set(pl->supported, 10baseT_Full); phylink_set(pl->supported, 100baseT_Half); phylink_set(pl->supported, 100baseT_Full); phylink_set(pl->supported, 1000baseT_Half); phylink_set(pl->supported, 1000baseT_Full); break; case PHY_INTERFACE_MODE_1000BASEX: phylink_set(pl->supported, 1000baseX_Full); break; case PHY_INTERFACE_MODE_2500BASEX: phylink_set(pl->supported, 2500baseX_Full); break; case PHY_INTERFACE_MODE_USXGMII: case PHY_INTERFACE_MODE_10GKR: case PHY_INTERFACE_MODE_10GBASER: phylink_set(pl->supported, 10baseT_Half); phylink_set(pl->supported, 10baseT_Full); phylink_set(pl->supported, 100baseT_Half); phylink_set(pl->supported, 100baseT_Full); phylink_set(pl->supported, 1000baseT_Half); phylink_set(pl->supported, 1000baseT_Full); phylink_set(pl->supported, 1000baseX_Full); phylink_set(pl->supported, 1000baseKX_Full); phylink_set(pl->supported, 2500baseT_Full); phylink_set(pl->supported, 2500baseX_Full); phylink_set(pl->supported, 5000baseT_Full); phylink_set(pl->supported, 10000baseT_Full); phylink_set(pl->supported, 10000baseKR_Full); phylink_set(pl->supported, 10000baseKX4_Full); phylink_set(pl->supported, 10000baseCR_Full); phylink_set(pl->supported, 10000baseSR_Full); phylink_set(pl->supported, 10000baseLR_Full); phylink_set(pl->supported, 10000baseLRM_Full); phylink_set(pl->supported, 10000baseER_Full); break; case PHY_INTERFACE_MODE_XLGMII: phylink_set(pl->supported, 25000baseCR_Full); phylink_set(pl->supported, 25000baseKR_Full); phylink_set(pl->supported, 25000baseSR_Full); phylink_set(pl->supported, 40000baseKR4_Full); phylink_set(pl->supported, 40000baseCR4_Full); phylink_set(pl->supported, 40000baseSR4_Full); phylink_set(pl->supported, 40000baseLR4_Full); phylink_set(pl->supported, 50000baseCR2_Full); phylink_set(pl->supported, 50000baseKR2_Full); phylink_set(pl->supported, 50000baseSR2_Full); phylink_set(pl->supported, 50000baseKR_Full); phylink_set(pl->supported, 50000baseSR_Full); phylink_set(pl->supported, 50000baseCR_Full); phylink_set(pl->supported, 50000baseLR_ER_FR_Full); phylink_set(pl->supported, 50000baseDR_Full); phylink_set(pl->supported, 100000baseKR4_Full); phylink_set(pl->supported, 100000baseSR4_Full); phylink_set(pl->supported, 100000baseCR4_Full); phylink_set(pl->supported, 100000baseLR4_ER4_Full); phylink_set(pl->supported, 100000baseKR2_Full); phylink_set(pl->supported, 100000baseSR2_Full); phylink_set(pl->supported, 100000baseCR2_Full); phylink_set(pl->supported, 100000baseLR2_ER2_FR2_Full); phylink_set(pl->supported, 100000baseDR2_Full); break; default: phylink_err(pl, "incorrect link mode %s for in-band status\n", phy_modes(pl->link_config.interface)); return -EINVAL; } linkmode_copy(pl->link_config.advertising, pl->supported); if (phylink_validate(pl, pl->supported, &pl->link_config)) { phylink_err(pl, "failed to validate link configuration for in-band status\n"); return -EINVAL; } /* Check if MAC/PCS also supports Autoneg. */ pl->link_config.an_enabled = phylink_test(pl->supported, Autoneg); } return 0; } static void phylink_apply_manual_flow(struct phylink *pl, struct phylink_link_state *state) { /* If autoneg is disabled, pause AN is also disabled */ if (!state->an_enabled) state->pause &= ~MLO_PAUSE_AN; /* Manual configuration of pause modes */ if (!(pl->link_config.pause & MLO_PAUSE_AN)) state->pause = pl->link_config.pause; } static void phylink_resolve_flow(struct phylink_link_state *state) { bool tx_pause, rx_pause; state->pause = MLO_PAUSE_NONE; if (state->duplex == DUPLEX_FULL) { linkmode_resolve_pause(state->advertising, state->lp_advertising, &tx_pause, &rx_pause); if (tx_pause) state->pause |= MLO_PAUSE_TX; if (rx_pause) state->pause |= MLO_PAUSE_RX; } } static void phylink_mac_config(struct phylink *pl, const struct phylink_link_state *state) { phylink_dbg(pl, "%s: mode=%s/%s/%s/%s adv=%*pb pause=%02x link=%u an=%u\n", __func__, phylink_an_mode_str(pl->cur_link_an_mode), phy_modes(state->interface), phy_speed_to_str(state->speed), phy_duplex_to_str(state->duplex), __ETHTOOL_LINK_MODE_MASK_NBITS, state->advertising, state->pause, state->link, state->an_enabled); pl->mac_ops->mac_config(pl->config, pl->cur_link_an_mode, state); } static void phylink_mac_config_up(struct phylink *pl, const struct phylink_link_state *state) { if (state->link) phylink_mac_config(pl, state); } static void phylink_mac_pcs_an_restart(struct phylink *pl) { if (pl->link_config.an_enabled && phy_interface_mode_is_8023z(pl->link_config.interface)) { if (pl->pcs_ops) pl->pcs_ops->pcs_an_restart(pl->config); else pl->mac_ops->mac_an_restart(pl->config); } } static void phylink_pcs_config(struct phylink *pl, bool force_restart, const struct phylink_link_state *state) { bool restart = force_restart; if (pl->pcs_ops && pl->pcs_ops->pcs_config(pl->config, pl->cur_link_an_mode, state->interface, state->advertising)) restart = true; phylink_mac_config(pl, state); if (restart) phylink_mac_pcs_an_restart(pl); } static void phylink_mac_pcs_get_state(struct phylink *pl, struct phylink_link_state *state) { linkmode_copy(state->advertising, pl->link_config.advertising); linkmode_zero(state->lp_advertising); state->interface = pl->link_config.interface; state->an_enabled = pl->link_config.an_enabled; state->speed = SPEED_UNKNOWN; state->duplex = DUPLEX_UNKNOWN; state->pause = MLO_PAUSE_NONE; state->an_complete = 0; state->link = 1; if (pl->pcs_ops) pl->pcs_ops->pcs_get_state(pl->config, state); else pl->mac_ops->mac_pcs_get_state(pl->config, state); } /* The fixed state is... fixed except for the link state, * which may be determined by a GPIO or a callback. */ static void phylink_get_fixed_state(struct phylink *pl, struct phylink_link_state *state) { *state = pl->link_config; if (pl->config->get_fixed_state) pl->config->get_fixed_state(pl->config, state); else if (pl->link_gpio) state->link = !!gpiod_get_value_cansleep(pl->link_gpio); phylink_resolve_flow(state); } static void phylink_mac_initial_config(struct phylink *pl, bool force_restart) { struct phylink_link_state link_state; switch (pl->cur_link_an_mode) { case MLO_AN_PHY: link_state = pl->phy_state; break; case MLO_AN_FIXED: phylink_get_fixed_state(pl, &link_state); break; case MLO_AN_INBAND: link_state = pl->link_config; if (link_state.interface == PHY_INTERFACE_MODE_SGMII) link_state.pause = MLO_PAUSE_NONE; break; default: /* can't happen */ return; } link_state.link = false; phylink_apply_manual_flow(pl, &link_state); phylink_pcs_config(pl, force_restart, &link_state); } static const char *phylink_pause_to_str(int pause) { switch (pause & MLO_PAUSE_TXRX_MASK) { case MLO_PAUSE_TX | MLO_PAUSE_RX: return "rx/tx"; case MLO_PAUSE_TX: return "tx"; case MLO_PAUSE_RX: return "rx"; default: return "off"; } } static void phylink_link_up(struct phylink *pl, struct phylink_link_state link_state) { struct net_device *ndev = pl->netdev; pl->cur_interface = link_state.interface; if (pl->pcs_ops && pl->pcs_ops->pcs_link_up) pl->pcs_ops->pcs_link_up(pl->config, pl->cur_link_an_mode, pl->cur_interface, link_state.speed, link_state.duplex); pl->mac_ops->mac_link_up(pl->config, pl->phydev, pl->cur_link_an_mode, pl->cur_interface, link_state.speed, link_state.duplex, !!(link_state.pause & MLO_PAUSE_TX), !!(link_state.pause & MLO_PAUSE_RX)); if (ndev) netif_carrier_on(ndev); phylink_info(pl, "Link is Up - %s/%s - flow control %s\n", phy_speed_to_str(link_state.speed), phy_duplex_to_str(link_state.duplex), phylink_pause_to_str(link_state.pause)); } static void phylink_link_down(struct phylink *pl) { struct net_device *ndev = pl->netdev; if (ndev) netif_carrier_off(ndev); pl->mac_ops->mac_link_down(pl->config, pl->cur_link_an_mode, pl->cur_interface); phylink_info(pl, "Link is Down\n"); } static void phylink_resolve(struct work_struct *w) { struct phylink *pl = container_of(w, struct phylink, resolve); struct phylink_link_state link_state; struct net_device *ndev = pl->netdev; int link_changed; mutex_lock(&pl->state_mutex); if (pl->phylink_disable_state) { pl->mac_link_dropped = false; link_state.link = false; } else if (pl->mac_link_dropped) { link_state.link = false; } else { switch (pl->cur_link_an_mode) { case MLO_AN_PHY: link_state = pl->phy_state; phylink_apply_manual_flow(pl, &link_state); phylink_mac_config_up(pl, &link_state); break; case MLO_AN_FIXED: phylink_get_fixed_state(pl, &link_state); phylink_mac_config_up(pl, &link_state); break; case MLO_AN_INBAND: phylink_mac_pcs_get_state(pl, &link_state); /* If we have a phy, the "up" state is the union of * both the PHY and the MAC */ if (pl->phydev) link_state.link &= pl->phy_state.link; /* Only update if the PHY link is up */ if (pl->phydev && pl->phy_state.link) { link_state.interface = pl->phy_state.interface; /* If we have a PHY, we need to update with * the PHY flow control bits. */ link_state.pause = pl->phy_state.pause; phylink_apply_manual_flow(pl, &link_state); phylink_mac_config(pl, &link_state); } else { phylink_apply_manual_flow(pl, &link_state); } break; } } if (pl->netdev) link_changed = (link_state.link != netif_carrier_ok(ndev)); else link_changed = (link_state.link != pl->old_link_state); if (link_changed) { pl->old_link_state = link_state.link; if (!link_state.link) phylink_link_down(pl); else phylink_link_up(pl, link_state); } if (!link_state.link && pl->mac_link_dropped) { pl->mac_link_dropped = false; queue_work(system_power_efficient_wq, &pl->resolve); } mutex_unlock(&pl->state_mutex); } static void phylink_run_resolve(struct phylink *pl) { if (!pl->phylink_disable_state) queue_work(system_power_efficient_wq, &pl->resolve); } static void phylink_run_resolve_and_disable(struct phylink *pl, int bit) { unsigned long state = pl->phylink_disable_state; set_bit(bit, &pl->phylink_disable_state); if (state == 0) { queue_work(system_power_efficient_wq, &pl->resolve); flush_work(&pl->resolve); } } static void phylink_fixed_poll(struct timer_list *t) { struct phylink *pl = container_of(t, struct phylink, link_poll); mod_timer(t, jiffies + HZ); phylink_run_resolve(pl); } static const struct sfp_upstream_ops sfp_phylink_ops; static int phylink_register_sfp(struct phylink *pl, struct fwnode_handle *fwnode) { struct sfp_bus *bus; int ret; if (!fwnode) return 0; bus = sfp_bus_find_fwnode(fwnode); if (IS_ERR(bus)) { ret = PTR_ERR(bus); phylink_err(pl, "unable to attach SFP bus: %d\n", ret); return ret; } pl->sfp_bus = bus; ret = sfp_bus_add_upstream(bus, pl, &sfp_phylink_ops); sfp_bus_put(bus); return ret; } /** * phylink_create() - create a phylink instance * @config: a pointer to the target &struct phylink_config * @fwnode: a pointer to a &struct fwnode_handle describing the network * interface * @iface: the desired link mode defined by &typedef phy_interface_t * @mac_ops: a pointer to a &struct phylink_mac_ops for the MAC. * * Create a new phylink instance, and parse the link parameters found in @np. * This will parse in-band modes, fixed-link or SFP configuration. * * Note: the rtnl lock must not be held when calling this function. * * Returns a pointer to a &struct phylink, or an error-pointer value. Users * must use IS_ERR() to check for errors from this function. */ struct phylink *phylink_create(struct phylink_config *config, struct fwnode_handle *fwnode, phy_interface_t iface, const struct phylink_mac_ops *mac_ops) { struct phylink *pl; int ret; pl = kzalloc(sizeof(*pl), GFP_KERNEL); if (!pl) return ERR_PTR(-ENOMEM); mutex_init(&pl->state_mutex); INIT_WORK(&pl->resolve, phylink_resolve); pl->config = config; if (config->type == PHYLINK_NETDEV) { pl->netdev = to_net_dev(config->dev); } else if (config->type == PHYLINK_DEV) { pl->dev = config->dev; } else { kfree(pl); return ERR_PTR(-EINVAL); } pl->phy_state.interface = iface; pl->link_interface = iface; if (iface == PHY_INTERFACE_MODE_MOCA) pl->link_port = PORT_BNC; else pl->link_port = PORT_MII; pl->link_config.interface = iface; pl->link_config.pause = MLO_PAUSE_AN; pl->link_config.speed = SPEED_UNKNOWN; pl->link_config.duplex = DUPLEX_UNKNOWN; pl->link_config.an_enabled = true; pl->mac_ops = mac_ops; __set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); timer_setup(&pl->link_poll, phylink_fixed_poll, 0); bitmap_fill(pl->supported, __ETHTOOL_LINK_MODE_MASK_NBITS); linkmode_copy(pl->link_config.advertising, pl->supported); phylink_validate(pl, pl->supported, &pl->link_config); ret = phylink_parse_mode(pl, fwnode); if (ret < 0) { kfree(pl); return ERR_PTR(ret); } if (pl->cfg_link_an_mode == MLO_AN_FIXED) { ret = phylink_parse_fixedlink(pl, fwnode); if (ret < 0) { kfree(pl); return ERR_PTR(ret); } } pl->cur_link_an_mode = pl->cfg_link_an_mode; ret = phylink_register_sfp(pl, fwnode); if (ret < 0) { kfree(pl); return ERR_PTR(ret); } return pl; } EXPORT_SYMBOL_GPL(phylink_create); void phylink_add_pcs(struct phylink *pl, const struct phylink_pcs_ops *ops) { pl->pcs_ops = ops; } EXPORT_SYMBOL_GPL(phylink_add_pcs); /** * phylink_destroy() - cleanup and destroy the phylink instance * @pl: a pointer to a &struct phylink returned from phylink_create() * * Destroy a phylink instance. Any PHY that has been attached must have been * cleaned up via phylink_disconnect_phy() prior to calling this function. * * Note: the rtnl lock must not be held when calling this function. */ void phylink_destroy(struct phylink *pl) { sfp_bus_del_upstream(pl->sfp_bus); if (pl->link_gpio) gpiod_put(pl->link_gpio); cancel_work_sync(&pl->resolve); kfree(pl); } EXPORT_SYMBOL_GPL(phylink_destroy); static void phylink_phy_change(struct phy_device *phydev, bool up) { struct phylink *pl = phydev->phylink; bool tx_pause, rx_pause; phy_get_pause(phydev, &tx_pause, &rx_pause); mutex_lock(&pl->state_mutex); pl->phy_state.speed = phydev->speed; pl->phy_state.duplex = phydev->duplex; pl->phy_state.pause = MLO_PAUSE_NONE; if (tx_pause) pl->phy_state.pause |= MLO_PAUSE_TX; if (rx_pause) pl->phy_state.pause |= MLO_PAUSE_RX; pl->phy_state.interface = phydev->interface; pl->phy_state.link = up; mutex_unlock(&pl->state_mutex); phylink_run_resolve(pl); phylink_dbg(pl, "phy link %s %s/%s/%s\n", up ? "up" : "down", phy_modes(phydev->interface), phy_speed_to_str(phydev->speed), phy_duplex_to_str(phydev->duplex)); } static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy, phy_interface_t interface) { struct phylink_link_state config; __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); char *irq_str; int ret; /* * This is the new way of dealing with flow control for PHYs, * as described by Timur Tabi in commit 529ed1275263 ("net: phy: * phy drivers should not set SUPPORTED_[Asym_]Pause") except * using our validate call to the MAC, we rely upon the MAC * clearing the bits from both supported and advertising fields. */ phy_support_asym_pause(phy); memset(&config, 0, sizeof(config)); linkmode_copy(supported, phy->supported); linkmode_copy(config.advertising, phy->advertising); /* Clause 45 PHYs switch their Serdes lane between several different * modes, normally 10GBASE-R, SGMII. Some use 2500BASE-X for 2.5G * speeds. We really need to know which interface modes the PHY and * MAC supports to properly work out which linkmodes can be supported. */ if (phy->is_c45 && interface != PHY_INTERFACE_MODE_RXAUI && interface != PHY_INTERFACE_MODE_XAUI && interface != PHY_INTERFACE_MODE_USXGMII) config.interface = PHY_INTERFACE_MODE_NA; else config.interface = interface; ret = phylink_validate(pl, supported, &config); if (ret) { phylink_warn(pl, "validation of %s with support %*pb and advertisement %*pb failed: %d\n", phy_modes(config.interface), __ETHTOOL_LINK_MODE_MASK_NBITS, phy->supported, __ETHTOOL_LINK_MODE_MASK_NBITS, config.advertising, ret); return ret; } phy->phylink = pl; phy->phy_link_change = phylink_phy_change; irq_str = phy_attached_info_irq(phy); phylink_info(pl, "PHY [%s] driver [%s] (irq=%s)\n", dev_name(&phy->mdio.dev), phy->drv->name, irq_str); kfree(irq_str); mutex_lock(&phy->lock); mutex_lock(&pl->state_mutex); pl->phydev = phy; pl->phy_state.interface = interface; pl->phy_state.pause = MLO_PAUSE_NONE; pl->phy_state.speed = SPEED_UNKNOWN; pl->phy_state.duplex = DUPLEX_UNKNOWN; linkmode_copy(pl->supported, supported); linkmode_copy(pl->link_config.advertising, config.advertising); /* Restrict the phy advertisement according to the MAC support. */ linkmode_copy(phy->advertising, config.advertising); mutex_unlock(&pl->state_mutex); mutex_unlock(&phy->lock); phylink_dbg(pl, "phy: setting supported %*pb advertising %*pb\n", __ETHTOOL_LINK_MODE_MASK_NBITS, pl->supported, __ETHTOOL_LINK_MODE_MASK_NBITS, phy->advertising); if (phy_interrupt_is_valid(phy)) phy_request_interrupt(phy); return 0; } static int phylink_attach_phy(struct phylink *pl, struct phy_device *phy, phy_interface_t interface) { if (WARN_ON(pl->cfg_link_an_mode == MLO_AN_FIXED || (pl->cfg_link_an_mode == MLO_AN_INBAND && phy_interface_mode_is_8023z(interface)))) return -EINVAL; if (pl->phydev) return -EBUSY; return phy_attach_direct(pl->netdev, phy, 0, interface); } /** * phylink_connect_phy() - connect a PHY to the phylink instance * @pl: a pointer to a &struct phylink returned from phylink_create() * @phy: a pointer to a &struct phy_device. * * Connect @phy to the phylink instance specified by @pl by calling * phy_attach_direct(). Configure the @phy according to the MAC driver's * capabilities, start the PHYLIB state machine and enable any interrupts * that the PHY supports. * * This updates the phylink's ethtool supported and advertising link mode * masks. * * Returns 0 on success or a negative errno. */ int phylink_connect_phy(struct phylink *pl, struct phy_device *phy) { int ret; /* Use PHY device/driver interface */ if (pl->link_interface == PHY_INTERFACE_MODE_NA) { pl->link_interface = phy->interface; pl->link_config.interface = pl->link_interface; } ret = phylink_attach_phy(pl, phy, pl->link_interface); if (ret < 0) return ret; ret = phylink_bringup_phy(pl, phy, pl->link_config.interface); if (ret) phy_detach(phy); return ret; } EXPORT_SYMBOL_GPL(phylink_connect_phy); /** * phylink_of_phy_connect() - connect the PHY specified in the DT mode. * @pl: a pointer to a &struct phylink returned from phylink_create() * @dn: a pointer to a &struct device_node. * @flags: PHY-specific flags to communicate to the PHY device driver * * Connect the phy specified in the device node @dn to the phylink instance * specified by @pl. Actions specified in phylink_connect_phy() will be * performed. * * Returns 0 on success or a negative errno. */ int phylink_of_phy_connect(struct phylink *pl, struct device_node *dn, u32 flags) { struct device_node *phy_node; struct phy_device *phy_dev; int ret; /* Fixed links and 802.3z are handled without needing a PHY */ if (pl->cfg_link_an_mode == MLO_AN_FIXED || (pl->cfg_link_an_mode == MLO_AN_INBAND && phy_interface_mode_is_8023z(pl->link_interface))) return 0; phy_node = of_parse_phandle(dn, "phy-handle", 0); if (!phy_node) phy_node = of_parse_phandle(dn, "phy", 0); if (!phy_node) phy_node = of_parse_phandle(dn, "phy-device", 0); if (!phy_node) { if (pl->cfg_link_an_mode == MLO_AN_PHY) return -ENODEV; return 0; } phy_dev = of_phy_find_device(phy_node); /* We're done with the phy_node handle */ of_node_put(phy_node); if (!phy_dev) return -ENODEV; ret = phy_attach_direct(pl->netdev, phy_dev, flags, pl->link_interface); if (ret) return ret; ret = phylink_bringup_phy(pl, phy_dev, pl->link_config.interface); if (ret) phy_detach(phy_dev); return ret; } EXPORT_SYMBOL_GPL(phylink_of_phy_connect); /** * phylink_disconnect_phy() - disconnect any PHY attached to the phylink * instance. * @pl: a pointer to a &struct phylink returned from phylink_create() * * Disconnect any current PHY from the phylink instance described by @pl. */ void phylink_disconnect_phy(struct phylink *pl) { struct phy_device *phy; ASSERT_RTNL(); phy = pl->phydev; if (phy) { mutex_lock(&phy->lock); mutex_lock(&pl->state_mutex); pl->phydev = NULL; mutex_unlock(&pl->state_mutex); mutex_unlock(&phy->lock); flush_work(&pl->resolve); phy_disconnect(phy); } } EXPORT_SYMBOL_GPL(phylink_disconnect_phy); /** * phylink_mac_change() - notify phylink of a change in MAC state * @pl: a pointer to a &struct phylink returned from phylink_create() * @up: indicates whether the link is currently up. * * The MAC driver should call this driver when the state of its link * changes (eg, link failure, new negotiation results, etc.) */ void phylink_mac_change(struct phylink *pl, bool up) { if (!up) pl->mac_link_dropped = true; phylink_run_resolve(pl); phylink_dbg(pl, "mac link %s\n", up ? "up" : "down"); } EXPORT_SYMBOL_GPL(phylink_mac_change); static irqreturn_t phylink_link_handler(int irq, void *data) { struct phylink *pl = data; phylink_run_resolve(pl); return IRQ_HANDLED; } /** * phylink_start() - start a phylink instance * @pl: a pointer to a &struct phylink returned from phylink_create() * * Start the phylink instance specified by @pl, configuring the MAC for the * desired link mode(s) and negotiation style. This should be called from the * network device driver's &struct net_device_ops ndo_open() method. */ void phylink_start(struct phylink *pl) { bool poll = false; ASSERT_RTNL(); phylink_info(pl, "configuring for %s/%s link mode\n", phylink_an_mode_str(pl->cur_link_an_mode), phy_modes(pl->link_config.interface)); /* Always set the carrier off */ if (pl->netdev) netif_carrier_off(pl->netdev); /* Apply the link configuration to the MAC when starting. This allows * a fixed-link to start with the correct parameters, and also * ensures that we set the appropriate advertisement for Serdes links. * * Restart autonegotiation if using 802.3z to ensure that the link * parameters are properly negotiated. This is necessary for DSA * switches using 802.3z negotiation to ensure they see our modes. */ phylink_mac_initial_config(pl, true); clear_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); phylink_run_resolve(pl); if (pl->cfg_link_an_mode == MLO_AN_FIXED && pl->link_gpio) { int irq = gpiod_to_irq(pl->link_gpio); if (irq > 0) { if (!request_irq(irq, phylink_link_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "netdev link", pl)) pl->link_irq = irq; else irq = 0; } if (irq <= 0) poll = true; } switch (pl->cfg_link_an_mode) { case MLO_AN_FIXED: poll |= pl->config->poll_fixed_state; break; case MLO_AN_INBAND: poll |= pl->config->pcs_poll; break; } if (poll) mod_timer(&pl->link_poll, jiffies + HZ); if (pl->phydev) phy_start(pl->phydev); if (pl->sfp_bus) sfp_upstream_start(pl->sfp_bus); } EXPORT_SYMBOL_GPL(phylink_start); /** * phylink_stop() - stop a phylink instance * @pl: a pointer to a &struct phylink returned from phylink_create() * * Stop the phylink instance specified by @pl. This should be called from the * network device driver's &struct net_device_ops ndo_stop() method. The * network device's carrier state should not be changed prior to calling this * function. */ void phylink_stop(struct phylink *pl) { ASSERT_RTNL(); if (pl->sfp_bus) sfp_upstream_stop(pl->sfp_bus); if (pl->phydev) phy_stop(pl->phydev); del_timer_sync(&pl->link_poll); if (pl->link_irq) { free_irq(pl->link_irq, pl); pl->link_irq = 0; } phylink_run_resolve_and_disable(pl, PHYLINK_DISABLE_STOPPED); } EXPORT_SYMBOL_GPL(phylink_stop); /** * phylink_ethtool_get_wol() - get the wake on lan parameters for the PHY * @pl: a pointer to a &struct phylink returned from phylink_create() * @wol: a pointer to &struct ethtool_wolinfo to hold the read parameters * * Read the wake on lan parameters from the PHY attached to the phylink * instance specified by @pl. If no PHY is currently attached, report no * support for wake on lan. */ void phylink_ethtool_get_wol(struct phylink *pl, struct ethtool_wolinfo *wol) { ASSERT_RTNL(); wol->supported = 0; wol->wolopts = 0; if (pl->phydev) phy_ethtool_get_wol(pl->phydev, wol); } EXPORT_SYMBOL_GPL(phylink_ethtool_get_wol); /** * phylink_ethtool_set_wol() - set wake on lan parameters * @pl: a pointer to a &struct phylink returned from phylink_create() * @wol: a pointer to &struct ethtool_wolinfo for the desired parameters * * Set the wake on lan parameters for the PHY attached to the phylink * instance specified by @pl. If no PHY is attached, returns %EOPNOTSUPP * error. * * Returns zero on success or negative errno code. */ int phylink_ethtool_set_wol(struct phylink *pl, struct ethtool_wolinfo *wol) { int ret = -EOPNOTSUPP; ASSERT_RTNL(); if (pl->phydev) ret = phy_ethtool_set_wol(pl->phydev, wol); return ret; } EXPORT_SYMBOL_GPL(phylink_ethtool_set_wol); static void phylink_merge_link_mode(unsigned long *dst, const unsigned long *b) { __ETHTOOL_DECLARE_LINK_MODE_MASK(mask); linkmode_zero(mask); phylink_set_port_modes(mask); linkmode_and(dst, dst, mask); linkmode_or(dst, dst, b); } static void phylink_get_ksettings(const struct phylink_link_state *state, struct ethtool_link_ksettings *kset) { phylink_merge_link_mode(kset->link_modes.advertising, state->advertising); linkmode_copy(kset->link_modes.lp_advertising, state->lp_advertising); kset->base.speed = state->speed; kset->base.duplex = state->duplex; kset->base.autoneg = state->an_enabled ? AUTONEG_ENABLE : AUTONEG_DISABLE; } /** * phylink_ethtool_ksettings_get() - get the current link settings * @pl: a pointer to a &struct phylink returned from phylink_create() * @kset: a pointer to a &struct ethtool_link_ksettings to hold link settings * * Read the current link settings for the phylink instance specified by @pl. * This will be the link settings read from the MAC, PHY or fixed link * settings depending on the current negotiation mode. */ int phylink_ethtool_ksettings_get(struct phylink *pl, struct ethtool_link_ksettings *kset) { struct phylink_link_state link_state; ASSERT_RTNL(); if (pl->phydev) { phy_ethtool_ksettings_get(pl->phydev, kset); } else { kset->base.port = pl->link_port; } linkmode_copy(kset->link_modes.supported, pl->supported); switch (pl->cur_link_an_mode) { case MLO_AN_FIXED: /* We are using fixed settings. Report these as the * current link settings - and note that these also * represent the supported speeds/duplex/pause modes. */ phylink_get_fixed_state(pl, &link_state); phylink_get_ksettings(&link_state, kset); break; case MLO_AN_INBAND: /* If there is a phy attached, then use the reported * settings from the phy with no modification. */ if (pl->phydev) break; phylink_mac_pcs_get_state(pl, &link_state); /* The MAC is reporting the link results from its own PCS * layer via in-band status. Report these as the current * link settings. */ phylink_get_ksettings(&link_state, kset); break; } return 0; } EXPORT_SYMBOL_GPL(phylink_ethtool_ksettings_get); /** * phylink_ethtool_ksettings_set() - set the link settings * @pl: a pointer to a &struct phylink returned from phylink_create() * @kset: a pointer to a &struct ethtool_link_ksettings for the desired modes */ int phylink_ethtool_ksettings_set(struct phylink *pl, const struct ethtool_link_ksettings *kset) { __ETHTOOL_DECLARE_LINK_MODE_MASK(support); struct ethtool_link_ksettings our_kset; struct phylink_link_state config; int ret; ASSERT_RTNL(); if (kset->base.autoneg != AUTONEG_DISABLE && kset->base.autoneg != AUTONEG_ENABLE) return -EINVAL; linkmode_copy(support, pl->supported); config = pl->link_config; /* Mask out unsupported advertisements */ linkmode_and(config.advertising, kset->link_modes.advertising, support); /* FIXME: should we reject autoneg if phy/mac does not support it? */ if (kset->base.autoneg == AUTONEG_DISABLE) { const struct phy_setting *s; /* Autonegotiation disabled, select a suitable speed and * duplex. */ s = phy_lookup_setting(kset->base.speed, kset->base.duplex, support, false); if (!s) return -EINVAL; /* If we have a fixed link (as specified by firmware), refuse * to change link parameters. */ if (pl->cur_link_an_mode == MLO_AN_FIXED && (s->speed != pl->link_config.speed || s->duplex != pl->link_config.duplex)) return -EINVAL; config.speed = s->speed; config.duplex = s->duplex; config.an_enabled = false; __clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising); } else { /* If we have a fixed link, refuse to enable autonegotiation */ if (pl->cur_link_an_mode == MLO_AN_FIXED) return -EINVAL; config.speed = SPEED_UNKNOWN; config.duplex = DUPLEX_UNKNOWN; config.an_enabled = true; __set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising); } if (pl->phydev) { /* If we have a PHY, we process the kset change via phylib. * phylib will call our link state function if the PHY * parameters have changed, which will trigger a resolve * and update the MAC configuration. */ our_kset = *kset; linkmode_copy(our_kset.link_modes.advertising, config.advertising); our_kset.base.speed = config.speed; our_kset.base.duplex = config.duplex; ret = phy_ethtool_ksettings_set(pl->phydev, &our_kset); if (ret) return ret; mutex_lock(&pl->state_mutex); /* Save the new configuration */ linkmode_copy(pl->link_config.advertising, our_kset.link_modes.advertising); pl->link_config.interface = config.interface; pl->link_config.speed = our_kset.base.speed; pl->link_config.duplex = our_kset.base.duplex; pl->link_config.an_enabled = our_kset.base.autoneg != AUTONEG_DISABLE; mutex_unlock(&pl->state_mutex); } else { /* For a fixed link, this isn't able to change any parameters, * which just leaves inband mode. */ if (phylink_validate(pl, support, &config)) return -EINVAL; /* If autonegotiation is enabled, we must have an advertisement */ if (config.an_enabled && phylink_is_empty_linkmode(config.advertising)) return -EINVAL; mutex_lock(&pl->state_mutex); linkmode_copy(pl->link_config.advertising, config.advertising); pl->link_config.interface = config.interface; pl->link_config.speed = config.speed; pl->link_config.duplex = config.duplex; pl->link_config.an_enabled = kset->base.autoneg != AUTONEG_DISABLE; if (pl->cur_link_an_mode == MLO_AN_INBAND && !test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) { /* If in 802.3z mode, this updates the advertisement. * * If we are in SGMII mode without a PHY, there is no * advertisement; the only thing we have is the pause * modes which can only come from a PHY. */ phylink_pcs_config(pl, true, &pl->link_config); } mutex_unlock(&pl->state_mutex); } return 0; } EXPORT_SYMBOL_GPL(phylink_ethtool_ksettings_set); /** * phylink_ethtool_nway_reset() - restart negotiation * @pl: a pointer to a &struct phylink returned from phylink_create() * * Restart negotiation for the phylink instance specified by @pl. This will * cause any attached phy to restart negotiation with the link partner, and * if the MAC is in a BaseX mode, the MAC will also be requested to restart * negotiation. * * Returns zero on success, or negative error code. */ int phylink_ethtool_nway_reset(struct phylink *pl) { int ret = 0; ASSERT_RTNL(); if (pl->phydev) ret = phy_restart_aneg(pl->phydev); phylink_mac_pcs_an_restart(pl); return ret; } EXPORT_SYMBOL_GPL(phylink_ethtool_nway_reset); /** * phylink_ethtool_get_pauseparam() - get the current pause parameters * @pl: a pointer to a &struct phylink returned from phylink_create() * @pause: a pointer to a &struct ethtool_pauseparam */ void phylink_ethtool_get_pauseparam(struct phylink *pl, struct ethtool_pauseparam *pause) { ASSERT_RTNL(); pause->autoneg = !!(pl->link_config.pause & MLO_PAUSE_AN); pause->rx_pause = !!(pl->link_config.pause & MLO_PAUSE_RX); pause->tx_pause = !!(pl->link_config.pause & MLO_PAUSE_TX); } EXPORT_SYMBOL_GPL(phylink_ethtool_get_pauseparam); /** * phylink_ethtool_set_pauseparam() - set the current pause parameters * @pl: a pointer to a &struct phylink returned from phylink_create() * @pause: a pointer to a &struct ethtool_pauseparam */ int phylink_ethtool_set_pauseparam(struct phylink *pl, struct ethtool_pauseparam *pause) { struct phylink_link_state *config = &pl->link_config; bool manual_changed; int pause_state; ASSERT_RTNL(); if (pl->cur_link_an_mode == MLO_AN_FIXED) return -EOPNOTSUPP; if (!phylink_test(pl->supported, Pause) && !phylink_test(pl->supported, Asym_Pause)) return -EOPNOTSUPP; if (!phylink_test(pl->supported, Asym_Pause) && !pause->autoneg && pause->rx_pause != pause->tx_pause) return -EINVAL; pause_state = 0; if (pause->autoneg) pause_state |= MLO_PAUSE_AN; if (pause->rx_pause) pause_state |= MLO_PAUSE_RX; if (pause->tx_pause) pause_state |= MLO_PAUSE_TX; mutex_lock(&pl->state_mutex); /* * See the comments for linkmode_set_pause(), wrt the deficiencies * with the current implementation. A solution to this issue would * be: * ethtool Local device * rx tx Pause AsymDir * 0 0 0 0 * 1 0 1 1 * 0 1 0 1 * 1 1 1 1 * and then use the ethtool rx/tx enablement status to mask the * rx/tx pause resolution. */ linkmode_set_pause(config->advertising, pause->tx_pause, pause->rx_pause); manual_changed = (config->pause ^ pause_state) & MLO_PAUSE_AN || (!(pause_state & MLO_PAUSE_AN) && (config->pause ^ pause_state) & MLO_PAUSE_TXRX_MASK); config->pause = pause_state; if (!pl->phydev && !test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) phylink_pcs_config(pl, true, &pl->link_config); mutex_unlock(&pl->state_mutex); /* If we have a PHY, a change of the pause frame advertisement will * cause phylib to renegotiate (if AN is enabled) which will in turn * call our phylink_phy_change() and trigger a resolve. Note that * we can't hold our state mutex while calling phy_set_asym_pause(). */ if (pl->phydev) phy_set_asym_pause(pl->phydev, pause->rx_pause, pause->tx_pause); /* If the manual pause settings changed, make sure we trigger a * resolve to update their state; we can not guarantee that the * link will cycle. */ if (manual_changed) { pl->mac_link_dropped = true; phylink_run_resolve(pl); } return 0; } EXPORT_SYMBOL_GPL(phylink_ethtool_set_pauseparam); /** * phylink_ethtool_get_eee_err() - read the energy efficient ethernet error * counter * @pl: a pointer to a &struct phylink returned from phylink_create(). * * Read the Energy Efficient Ethernet error counter from the PHY associated * with the phylink instance specified by @pl. * * Returns positive error counter value, or negative error code. */ int phylink_get_eee_err(struct phylink *pl) { int ret = 0; ASSERT_RTNL(); if (pl->phydev) ret = phy_get_eee_err(pl->phydev); return ret; } EXPORT_SYMBOL_GPL(phylink_get_eee_err); /** * phylink_init_eee() - init and check the EEE features * @pl: a pointer to a &struct phylink returned from phylink_create() * @clk_stop_enable: allow PHY to stop receive clock * * Must be called either with RTNL held or within mac_link_up() */ int phylink_init_eee(struct phylink *pl, bool clk_stop_enable) { int ret = -EOPNOTSUPP; if (pl->phydev) ret = phy_init_eee(pl->phydev, clk_stop_enable); return ret; } EXPORT_SYMBOL_GPL(phylink_init_eee); /** * phylink_ethtool_get_eee() - read the energy efficient ethernet parameters * @pl: a pointer to a &struct phylink returned from phylink_create() * @eee: a pointer to a &struct ethtool_eee for the read parameters */ int phylink_ethtool_get_eee(struct phylink *pl, struct ethtool_eee *eee) { int ret = -EOPNOTSUPP; ASSERT_RTNL(); if (pl->phydev) ret = phy_ethtool_get_eee(pl->phydev, eee); return ret; } EXPORT_SYMBOL_GPL(phylink_ethtool_get_eee); /** * phylink_ethtool_set_eee() - set the energy efficient ethernet parameters * @pl: a pointer to a &struct phylink returned from phylink_create() * @eee: a pointer to a &struct ethtool_eee for the desired parameters */ int phylink_ethtool_set_eee(struct phylink *pl, struct ethtool_eee *eee) { int ret = -EOPNOTSUPP; ASSERT_RTNL(); if (pl->phydev) ret = phy_ethtool_set_eee(pl->phydev, eee); return ret; } EXPORT_SYMBOL_GPL(phylink_ethtool_set_eee); /* This emulates MII registers for a fixed-mode phy operating as per the * passed in state. "aneg" defines if we report negotiation is possible. * * FIXME: should deal with negotiation state too. */ static int phylink_mii_emul_read(unsigned int reg, struct phylink_link_state *state) { struct fixed_phy_status fs; unsigned long *lpa = state->lp_advertising; int val; fs.link = state->link; fs.speed = state->speed; fs.duplex = state->duplex; fs.pause = test_bit(ETHTOOL_LINK_MODE_Pause_BIT, lpa); fs.asym_pause = test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, lpa); val = swphy_read_reg(reg, &fs); if (reg == MII_BMSR) { if (!state->an_complete) val &= ~BMSR_ANEGCOMPLETE; } return val; } static int phylink_phy_read(struct phylink *pl, unsigned int phy_id, unsigned int reg) { struct phy_device *phydev = pl->phydev; int prtad, devad; if (mdio_phy_id_is_c45(phy_id)) { prtad = mdio_phy_id_prtad(phy_id); devad = mdio_phy_id_devad(phy_id); devad = mdiobus_c45_addr(devad, reg); } else if (phydev->is_c45) { switch (reg) { case MII_BMCR: case MII_BMSR: case MII_PHYSID1: case MII_PHYSID2: devad = __ffs(phydev->c45_ids.devices_in_package); break; case MII_ADVERTISE: case MII_LPA: if (!(phydev->c45_ids.devices_in_package & MDIO_DEVS_AN)) return -EINVAL; devad = MDIO_MMD_AN; if (reg == MII_ADVERTISE) reg = MDIO_AN_ADVERTISE; else reg = MDIO_AN_LPA; break; default: return -EINVAL; } prtad = phy_id; devad = mdiobus_c45_addr(devad, reg); } else { prtad = phy_id; devad = reg; } return mdiobus_read(pl->phydev->mdio.bus, prtad, devad); } static int phylink_phy_write(struct phylink *pl, unsigned int phy_id, unsigned int reg, unsigned int val) { struct phy_device *phydev = pl->phydev; int prtad, devad; if (mdio_phy_id_is_c45(phy_id)) { prtad = mdio_phy_id_prtad(phy_id); devad = mdio_phy_id_devad(phy_id); devad = mdiobus_c45_addr(devad, reg); } else if (phydev->is_c45) { switch (reg) { case MII_BMCR: case MII_BMSR: case MII_PHYSID1: case MII_PHYSID2: devad = __ffs(phydev->c45_ids.devices_in_package); break; case MII_ADVERTISE: case MII_LPA: if (!(phydev->c45_ids.devices_in_package & MDIO_DEVS_AN)) return -EINVAL; devad = MDIO_MMD_AN; if (reg == MII_ADVERTISE) reg = MDIO_AN_ADVERTISE; else reg = MDIO_AN_LPA; break; default: return -EINVAL; } prtad = phy_id; devad = mdiobus_c45_addr(devad, reg); } else { prtad = phy_id; devad = reg; } return mdiobus_write(phydev->mdio.bus, prtad, devad, val); } static int phylink_mii_read(struct phylink *pl, unsigned int phy_id, unsigned int reg) { struct phylink_link_state state; int val = 0xffff; switch (pl->cur_link_an_mode) { case MLO_AN_FIXED: if (phy_id == 0) { phylink_get_fixed_state(pl, &state); val = phylink_mii_emul_read(reg, &state); } break; case MLO_AN_PHY: return -EOPNOTSUPP; case MLO_AN_INBAND: if (phy_id == 0) { phylink_mac_pcs_get_state(pl, &state); val = phylink_mii_emul_read(reg, &state); } break; } return val & 0xffff; } static int phylink_mii_write(struct phylink *pl, unsigned int phy_id, unsigned int reg, unsigned int val) { switch (pl->cur_link_an_mode) { case MLO_AN_FIXED: break; case MLO_AN_PHY: return -EOPNOTSUPP; case MLO_AN_INBAND: break; } return 0; } /** * phylink_mii_ioctl() - generic mii ioctl interface * @pl: a pointer to a &struct phylink returned from phylink_create() * @ifr: a pointer to a &struct ifreq for socket ioctls * @cmd: ioctl cmd to execute * * Perform the specified MII ioctl on the PHY attached to the phylink instance * specified by @pl. If no PHY is attached, emulate the presence of the PHY. * * Returns: zero on success or negative error code. * * %SIOCGMIIPHY: * read register from the current PHY. * %SIOCGMIIREG: * read register from the specified PHY. * %SIOCSMIIREG: * set a register on the specified PHY. */ int phylink_mii_ioctl(struct phylink *pl, struct ifreq *ifr, int cmd) { struct mii_ioctl_data *mii = if_mii(ifr); int ret; ASSERT_RTNL(); if (pl->phydev) { /* PHYs only exist for MLO_AN_PHY and SGMII */ switch (cmd) { case SIOCGMIIPHY: mii->phy_id = pl->phydev->mdio.addr; /* fall through */ case SIOCGMIIREG: ret = phylink_phy_read(pl, mii->phy_id, mii->reg_num); if (ret >= 0) { mii->val_out = ret; ret = 0; } break; case SIOCSMIIREG: ret = phylink_phy_write(pl, mii->phy_id, mii->reg_num, mii->val_in); break; default: ret = phy_mii_ioctl(pl->phydev, ifr, cmd); break; } } else { switch (cmd) { case SIOCGMIIPHY: mii->phy_id = 0; /* fall through */ case SIOCGMIIREG: ret = phylink_mii_read(pl, mii->phy_id, mii->reg_num); if (ret >= 0) { mii->val_out = ret; ret = 0; } break; case SIOCSMIIREG: ret = phylink_mii_write(pl, mii->phy_id, mii->reg_num, mii->val_in); break; default: ret = -EOPNOTSUPP; break; } } return ret; } EXPORT_SYMBOL_GPL(phylink_mii_ioctl); static void phylink_sfp_attach(void *upstream, struct sfp_bus *bus) { struct phylink *pl = upstream; pl->netdev->sfp_bus = bus; } static void phylink_sfp_detach(void *upstream, struct sfp_bus *bus) { struct phylink *pl = upstream; pl->netdev->sfp_bus = NULL; } static int phylink_sfp_config(struct phylink *pl, u8 mode, const unsigned long *supported, const unsigned long *advertising) { __ETHTOOL_DECLARE_LINK_MODE_MASK(support1); __ETHTOOL_DECLARE_LINK_MODE_MASK(support); struct phylink_link_state config; phy_interface_t iface; bool changed; int ret; linkmode_copy(support, supported); memset(&config, 0, sizeof(config)); linkmode_copy(config.advertising, advertising); config.interface = PHY_INTERFACE_MODE_NA; config.speed = SPEED_UNKNOWN; config.duplex = DUPLEX_UNKNOWN; config.pause = MLO_PAUSE_AN; config.an_enabled = pl->link_config.an_enabled; /* Ignore errors if we're expecting a PHY to attach later */ ret = phylink_validate(pl, support, &config); if (ret) { phylink_err(pl, "validation with support %*pb failed: %d\n", __ETHTOOL_LINK_MODE_MASK_NBITS, support, ret); return ret; } iface = sfp_select_interface(pl->sfp_bus, config.advertising); if (iface == PHY_INTERFACE_MODE_NA) { phylink_err(pl, "selection of interface failed, advertisement %*pb\n", __ETHTOOL_LINK_MODE_MASK_NBITS, config.advertising); return -EINVAL; } config.interface = iface; linkmode_copy(support1, support); ret = phylink_validate(pl, support1, &config); if (ret) { phylink_err(pl, "validation of %s/%s with support %*pb failed: %d\n", phylink_an_mode_str(mode), phy_modes(config.interface), __ETHTOOL_LINK_MODE_MASK_NBITS, support, ret); return ret; } phylink_dbg(pl, "requesting link mode %s/%s with support %*pb\n", phylink_an_mode_str(mode), phy_modes(config.interface), __ETHTOOL_LINK_MODE_MASK_NBITS, support); if (phy_interface_mode_is_8023z(iface) && pl->phydev) return -EINVAL; changed = !linkmode_equal(pl->supported, support); if (changed) { linkmode_copy(pl->supported, support); linkmode_copy(pl->link_config.advertising, config.advertising); } if (pl->cur_link_an_mode != mode || pl->link_config.interface != config.interface) { pl->link_config.interface = config.interface; pl->cur_link_an_mode = mode; changed = true; phylink_info(pl, "switched to %s/%s link mode\n", phylink_an_mode_str(mode), phy_modes(config.interface)); } pl->link_port = pl->sfp_port; if (changed && !test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) phylink_mac_initial_config(pl, false); return ret; } static int phylink_sfp_module_insert(void *upstream, const struct sfp_eeprom_id *id) { struct phylink *pl = upstream; unsigned long *support = pl->sfp_support; ASSERT_RTNL(); linkmode_zero(support); sfp_parse_support(pl->sfp_bus, id, support); pl->sfp_port = sfp_parse_port(pl->sfp_bus, id, support); /* If this module may have a PHY connecting later, defer until later */ pl->sfp_may_have_phy = sfp_may_have_phy(pl->sfp_bus, id); if (pl->sfp_may_have_phy) return 0; return phylink_sfp_config(pl, MLO_AN_INBAND, support, support); } static int phylink_sfp_module_start(void *upstream) { struct phylink *pl = upstream; /* If this SFP module has a PHY, start the PHY now. */ if (pl->phydev) { phy_start(pl->phydev); return 0; } /* If the module may have a PHY but we didn't detect one we * need to configure the MAC here. */ if (!pl->sfp_may_have_phy) return 0; return phylink_sfp_config(pl, MLO_AN_INBAND, pl->sfp_support, pl->sfp_support); } static void phylink_sfp_module_stop(void *upstream) { struct phylink *pl = upstream; /* If this SFP module has a PHY, stop it. */ if (pl->phydev) phy_stop(pl->phydev); } static void phylink_sfp_link_down(void *upstream) { struct phylink *pl = upstream; ASSERT_RTNL(); phylink_run_resolve_and_disable(pl, PHYLINK_DISABLE_LINK); } static void phylink_sfp_link_up(void *upstream) { struct phylink *pl = upstream; ASSERT_RTNL(); clear_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state); phylink_run_resolve(pl); } /* The Broadcom BCM84881 in the Methode DM7052 is unable to provide a SGMII * or 802.3z control word, so inband will not work. */ static bool phylink_phy_no_inband(struct phy_device *phy) { return phy->is_c45 && (phy->c45_ids.device_ids[1] & 0xfffffff0) == 0xae025150; } static int phylink_sfp_connect_phy(void *upstream, struct phy_device *phy) { struct phylink *pl = upstream; phy_interface_t interface; u8 mode; int ret; /* * This is the new way of dealing with flow control for PHYs, * as described by Timur Tabi in commit 529ed1275263 ("net: phy: * phy drivers should not set SUPPORTED_[Asym_]Pause") except * using our validate call to the MAC, we rely upon the MAC * clearing the bits from both supported and advertising fields. */ phy_support_asym_pause(phy); if (phylink_phy_no_inband(phy)) mode = MLO_AN_PHY; else mode = MLO_AN_INBAND; /* Do the initial configuration */ ret = phylink_sfp_config(pl, mode, phy->supported, phy->advertising); if (ret < 0) return ret; interface = pl->link_config.interface; ret = phylink_attach_phy(pl, phy, interface); if (ret < 0) return ret; ret = phylink_bringup_phy(pl, phy, interface); if (ret) phy_detach(phy); return ret; } static void phylink_sfp_disconnect_phy(void *upstream) { phylink_disconnect_phy(upstream); } static const struct sfp_upstream_ops sfp_phylink_ops = { .attach = phylink_sfp_attach, .detach = phylink_sfp_detach, .module_insert = phylink_sfp_module_insert, .module_start = phylink_sfp_module_start, .module_stop = phylink_sfp_module_stop, .link_up = phylink_sfp_link_up, .link_down = phylink_sfp_link_down, .connect_phy = phylink_sfp_connect_phy, .disconnect_phy = phylink_sfp_disconnect_phy, }; /* Helpers for MAC drivers */ /** * phylink_helper_basex_speed() - 1000BaseX/2500BaseX helper * @state: a pointer to a &struct phylink_link_state * * Inspect the interface mode, advertising mask or forced speed and * decide whether to run at 2.5Gbit or 1Gbit appropriately, switching * the interface mode to suit. @state->interface is appropriately * updated, and the advertising mask has the "other" baseX_Full flag * cleared. */ void phylink_helper_basex_speed(struct phylink_link_state *state) { if (phy_interface_mode_is_8023z(state->interface)) { bool want_2500 = state->an_enabled ? phylink_test(state->advertising, 2500baseX_Full) : state->speed == SPEED_2500; if (want_2500) { phylink_clear(state->advertising, 1000baseX_Full); state->interface = PHY_INTERFACE_MODE_2500BASEX; } else { phylink_clear(state->advertising, 2500baseX_Full); state->interface = PHY_INTERFACE_MODE_1000BASEX; } } } EXPORT_SYMBOL_GPL(phylink_helper_basex_speed); static void phylink_decode_c37_word(struct phylink_link_state *state, uint16_t config_reg, int speed) { bool tx_pause, rx_pause; int fd_bit; if (speed == SPEED_2500) fd_bit = ETHTOOL_LINK_MODE_2500baseX_Full_BIT; else fd_bit = ETHTOOL_LINK_MODE_1000baseX_Full_BIT; mii_lpa_mod_linkmode_x(state->lp_advertising, config_reg, fd_bit); if (linkmode_test_bit(fd_bit, state->advertising) && linkmode_test_bit(fd_bit, state->lp_advertising)) { state->speed = speed; state->duplex = DUPLEX_FULL; } else { /* negotiation failure */ state->link = false; } linkmode_resolve_pause(state->advertising, state->lp_advertising, &tx_pause, &rx_pause); if (tx_pause) state->pause |= MLO_PAUSE_TX; if (rx_pause) state->pause |= MLO_PAUSE_RX; } static void phylink_decode_sgmii_word(struct phylink_link_state *state, uint16_t config_reg) { if (!(config_reg & LPA_SGMII_LINK)) { state->link = false; return; } switch (config_reg & LPA_SGMII_SPD_MASK) { case LPA_SGMII_10: state->speed = SPEED_10; break; case LPA_SGMII_100: state->speed = SPEED_100; break; case LPA_SGMII_1000: state->speed = SPEED_1000; break; default: state->link = false; return; } if (config_reg & LPA_SGMII_FULL_DUPLEX) state->duplex = DUPLEX_FULL; else state->duplex = DUPLEX_HALF; } /** * phylink_mii_c22_pcs_get_state() - read the MAC PCS state * @pcs: a pointer to a &struct mdio_device. * @state: a pointer to a &struct phylink_link_state. * * Helper for MAC PCS supporting the 802.3 clause 22 register set for * clause 37 negotiation and/or SGMII control. * * Read the MAC PCS state from the MII device configured in @config and * parse the Clause 37 or Cisco SGMII link partner negotiation word into * the phylink @state structure. This is suitable to be directly plugged * into the mac_pcs_get_state() member of the struct phylink_mac_ops * structure. */ void phylink_mii_c22_pcs_get_state(struct mdio_device *pcs, struct phylink_link_state *state) { struct mii_bus *bus = pcs->bus; int addr = pcs->addr; int bmsr, lpa; bmsr = mdiobus_read(bus, addr, MII_BMSR); lpa = mdiobus_read(bus, addr, MII_LPA); if (bmsr < 0 || lpa < 0) { state->link = false; return; } state->link = !!(bmsr & BMSR_LSTATUS); state->an_complete = !!(bmsr & BMSR_ANEGCOMPLETE); if (!state->link) return; switch (state->interface) { case PHY_INTERFACE_MODE_1000BASEX: phylink_decode_c37_word(state, lpa, SPEED_1000); break; case PHY_INTERFACE_MODE_2500BASEX: phylink_decode_c37_word(state, lpa, SPEED_2500); break; case PHY_INTERFACE_MODE_SGMII: phylink_decode_sgmii_word(state, lpa); break; default: state->link = false; break; } } EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_get_state); /** * phylink_mii_c22_pcs_set_advertisement() - configure the clause 37 PCS * advertisement * @pcs: a pointer to a &struct mdio_device. * @interface: the PHY interface mode being configured * @advertising: the ethtool advertisement mask * * Helper for MAC PCS supporting the 802.3 clause 22 register set for * clause 37 negotiation and/or SGMII control. * * Configure the clause 37 PCS advertisement as specified by @state. This * does not trigger a renegotiation; phylink will do that via the * mac_an_restart() method of the struct phylink_mac_ops structure. * * Returns negative error code on failure to configure the advertisement, * zero if no change has been made, or one if the advertisement has changed. */ int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs, phy_interface_t interface, const unsigned long *advertising) { struct mii_bus *bus = pcs->bus; int addr = pcs->addr; int val, ret; u16 adv; switch (interface) { case PHY_INTERFACE_MODE_1000BASEX: case PHY_INTERFACE_MODE_2500BASEX: adv = ADVERTISE_1000XFULL; if (linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, advertising)) adv |= ADVERTISE_1000XPAUSE; if (linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, advertising)) adv |= ADVERTISE_1000XPSE_ASYM; val = mdiobus_read(bus, addr, MII_ADVERTISE); if (val < 0) return val; if (val == adv) return 0; ret = mdiobus_write(bus, addr, MII_ADVERTISE, adv); if (ret < 0) return ret; return 1; case PHY_INTERFACE_MODE_SGMII: val = mdiobus_read(bus, addr, MII_ADVERTISE); if (val < 0) return val; if (val == 0x0001) return 0; ret = mdiobus_write(bus, addr, MII_ADVERTISE, 0x0001); if (ret < 0) return ret; return 1; default: /* Nothing to do for other modes */ return 0; } } EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_set_advertisement); /** * phylink_mii_c22_pcs_an_restart() - restart 802.3z autonegotiation * @pcs: a pointer to a &struct mdio_device. * * Helper for MAC PCS supporting the 802.3 clause 22 register set for * clause 37 negotiation. * * Restart the clause 37 negotiation with the link partner. This is * suitable to be directly plugged into the mac_pcs_get_state() member * of the struct phylink_mac_ops structure. */ void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs) { struct mii_bus *bus = pcs->bus; int val, addr = pcs->addr; val = mdiobus_read(bus, addr, MII_BMCR); if (val >= 0) { val |= BMCR_ANRESTART; mdiobus_write(bus, addr, MII_BMCR, val); } } EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_an_restart); void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs, struct phylink_link_state *state) { struct mii_bus *bus = pcs->bus; int addr = pcs->addr; int stat; stat = mdiobus_c45_read(bus, addr, MDIO_MMD_PCS, MDIO_STAT1); if (stat < 0) { state->link = false; return; } state->link = !!(stat & MDIO_STAT1_LSTATUS); if (!state->link) return; switch (state->interface) { case PHY_INTERFACE_MODE_10GBASER: state->speed = SPEED_10000; state->duplex = DUPLEX_FULL; break; default: break; } } EXPORT_SYMBOL_GPL(phylink_mii_c45_pcs_get_state); MODULE_LICENSE("GPL v2");
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