| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Russell King | 11784 | 83.71% | 136 | 59.65% |
| Sean Anderson | 715 | 5.08% | 7 | 3.07% |
| Ioana Ciornei | 400 | 2.84% | 6 | 2.63% |
| Calvin Johnson | 172 | 1.22% | 2 | 0.88% |
| Florian Fainelli | 102 | 0.72% | 9 | 3.95% |
| Nathan Rossi | 100 | 0.71% | 1 | 0.44% |
| Andrew Lunn | 88 | 0.63% | 7 | 3.07% |
| Robert Hancock | 84 | 0.60% | 2 | 0.88% |
| Marek Behún | 68 | 0.48% | 3 | 1.32% |
| Baruch Siach | 65 | 0.46% | 1 | 0.44% |
| Romain Gantois | 56 | 0.40% | 1 | 0.44% |
| Ivan Bornyakov | 52 | 0.37% | 1 | 0.44% |
| Michael Sit Wei Hong | 43 | 0.31% | 1 | 0.44% |
| Andy Fleming | 34 | 0.24% | 2 | 0.88% |
| Heiner Kallweit | 32 | 0.23% | 3 | 1.32% |
| Vladimir Oltean | 29 | 0.21% | 3 | 1.32% |
| David Daney | 20 | 0.14% | 1 | 0.44% |
| Jose Abreu | 19 | 0.13% | 1 | 0.44% |
| Maxime Chevallier | 18 | 0.13% | 3 | 1.32% |
| DENG Qingfang | 15 | 0.11% | 1 | 0.44% |
| Anton Vorontsov | 14 | 0.10% | 1 | 0.44% |
| shenwei.wang at nxp.com | 14 | 0.10% | 1 | 0.44% |
| Piergiorgio Beruto | 12 | 0.09% | 1 | 0.44% |
| Michael Stapelberg | 12 | 0.09% | 1 | 0.44% |
| Arseny Solokha | 12 | 0.09% | 1 | 0.44% |
| Hauke Mehrtens | 11 | 0.08% | 1 | 0.44% |
| Ong Boon Leong | 9 | 0.06% | 2 | 0.88% |
| Alexandru Tachici | 9 | 0.06% | 1 | 0.44% |
| Gabor Juhos | 9 | 0.06% | 1 | 0.44% |
| Lennert Buytenhek | 8 | 0.06% | 1 | 0.44% |
| Antoine Tenart | 8 | 0.06% | 1 | 0.44% |
| Klaus Kudielka | 7 | 0.05% | 1 | 0.44% |
| Maciej W. Rozycki | 6 | 0.04% | 1 | 0.44% |
| Philippe Reynes | 5 | 0.04% | 1 | 0.44% |
| Linus Torvalds | 5 | 0.04% | 1 | 0.44% |
| Clément Leger | 4 | 0.03% | 1 | 0.44% |
| Gustavo A. R. Silva | 4 | 0.03% | 1 | 0.44% |
| Alex Marginean | 3 | 0.02% | 1 | 0.44% |
| Steen Hegelund | 3 | 0.02% | 1 | 0.44% |
| David S. Miller | 3 | 0.02% | 1 | 0.44% |
| Wenpeng Liang | 3 | 0.02% | 1 | 0.44% |
| Iyappan Subramanian | 2 | 0.01% | 1 | 0.44% |
| Colin Ian King | 2 | 0.01% | 1 | 0.44% |
| Richard Cochran | 2 | 0.01% | 1 | 0.44% |
| Dmitry Torokhov | 2 | 0.01% | 1 | 0.44% |
| Jakub Kiciński | 2 | 0.01% | 2 | 0.88% |
| Zach Brown | 2 | 0.01% | 1 | 0.44% |
| Christian Hohnstaedt | 1 | 0.01% | 1 | 0.44% |
| Giuseppe Cavallaro | 1 | 0.01% | 1 | 0.44% |
| Mauro Carvalho Chehab | 1 | 0.01% | 1 | 0.44% |
| siyanteng | 1 | 0.01% | 1 | 0.44% |
| Sergei Shtylyov | 1 | 0.01% | 1 | 0.44% |
| Dan Carpenter | 1 | 0.01% | 1 | 0.44% |
| Wei Yongjun | 1 | 0.01% | 1 | 0.44% |
| Sascha Hauer | 1 | 0.01% | 1 | 0.44% |
| Total | 14077 | 228 |
// 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/acpi.h> #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, PHYLINK_DISABLE_MAC_WOL, PCS_STATE_DOWN = 0, PCS_STATE_STARTING, PCS_STATE_STARTED, }; /** * struct phylink - internal data type for phylink */ struct phylink { /* private: */ struct net_device *netdev; const struct phylink_mac_ops *mac_ops; struct phylink_config *config; struct phylink_pcs *pcs; 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; unsigned int pcs_neg_mode; unsigned int pcs_state; bool mac_link_dropped; bool using_mac_select_pcs; struct sfp_bus *sfp_bus; bool sfp_may_have_phy; DECLARE_PHY_INTERFACE_MASK(sfp_interfaces); __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 static const phy_interface_t phylink_sfp_interface_preference[] = { PHY_INTERFACE_MODE_25GBASER, PHY_INTERFACE_MODE_USXGMII, PHY_INTERFACE_MODE_10GBASER, PHY_INTERFACE_MODE_5GBASER, PHY_INTERFACE_MODE_2500BASEX, PHY_INTERFACE_MODE_SGMII, PHY_INTERFACE_MODE_1000BASEX, PHY_INTERFACE_MODE_100BASEX, }; static DECLARE_PHY_INTERFACE_MASK(phylink_sfp_interfaces); /** * 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 unsigned int phylink_interface_signal_rate(phy_interface_t interface) { switch (interface) { case PHY_INTERFACE_MODE_SGMII: case PHY_INTERFACE_MODE_1000BASEX: /* 1.25Mbd */ return 1250; case PHY_INTERFACE_MODE_2500BASEX: /* 3.125Mbd */ return 3125; case PHY_INTERFACE_MODE_5GBASER: /* 5.15625Mbd */ return 5156; case PHY_INTERFACE_MODE_10GBASER: /* 10.3125Mbd */ return 10313; default: return 0; } } /** * phylink_interface_max_speed() - get the maximum speed of a phy interface * @interface: phy interface mode defined by &typedef phy_interface_t * * Determine the maximum speed of a phy interface. This is intended to help * determine the correct speed to pass to the MAC when the phy is performing * rate matching. * * Return: The maximum speed of @interface */ static int phylink_interface_max_speed(phy_interface_t interface) { switch (interface) { case PHY_INTERFACE_MODE_100BASEX: case PHY_INTERFACE_MODE_REVRMII: case PHY_INTERFACE_MODE_RMII: case PHY_INTERFACE_MODE_SMII: case PHY_INTERFACE_MODE_REVMII: case PHY_INTERFACE_MODE_MII: return SPEED_100; case PHY_INTERFACE_MODE_TBI: case PHY_INTERFACE_MODE_MOCA: case PHY_INTERFACE_MODE_RTBI: case PHY_INTERFACE_MODE_1000BASEX: case PHY_INTERFACE_MODE_1000BASEKX: case PHY_INTERFACE_MODE_TRGMII: case PHY_INTERFACE_MODE_RGMII_TXID: case PHY_INTERFACE_MODE_RGMII_RXID: case PHY_INTERFACE_MODE_RGMII_ID: case PHY_INTERFACE_MODE_RGMII: case PHY_INTERFACE_MODE_PSGMII: case PHY_INTERFACE_MODE_QSGMII: case PHY_INTERFACE_MODE_QUSGMII: case PHY_INTERFACE_MODE_SGMII: case PHY_INTERFACE_MODE_GMII: return SPEED_1000; case PHY_INTERFACE_MODE_2500BASEX: return SPEED_2500; case PHY_INTERFACE_MODE_5GBASER: return SPEED_5000; case PHY_INTERFACE_MODE_XGMII: case PHY_INTERFACE_MODE_RXAUI: case PHY_INTERFACE_MODE_XAUI: case PHY_INTERFACE_MODE_10GBASER: case PHY_INTERFACE_MODE_10GKR: case PHY_INTERFACE_MODE_USXGMII: return SPEED_10000; case PHY_INTERFACE_MODE_25GBASER: return SPEED_25000; case PHY_INTERFACE_MODE_XLGMII: return SPEED_40000; case PHY_INTERFACE_MODE_INTERNAL: case PHY_INTERFACE_MODE_NA: case PHY_INTERFACE_MODE_MAX: /* No idea! Garbage in, unknown out */ return SPEED_UNKNOWN; } /* If we get here, someone forgot to add an interface mode above */ WARN_ON_ONCE(1); return SPEED_UNKNOWN; } /** * phylink_caps_to_linkmodes() - Convert capabilities to ethtool link modes * @linkmodes: ethtool linkmode mask (must be already initialised) * @caps: bitmask of MAC capabilities * * Set all possible pause, speed and duplex linkmodes in @linkmodes that are * supported by the @caps. @linkmodes must have been initialised previously. */ static void phylink_caps_to_linkmodes(unsigned long *linkmodes, unsigned long caps) { if (caps & MAC_SYM_PAUSE) __set_bit(ETHTOOL_LINK_MODE_Pause_BIT, linkmodes); if (caps & MAC_ASYM_PAUSE) __set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, linkmodes); if (caps & MAC_10HD) { __set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10baseT1S_Half_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10baseT1S_P2MP_Half_BIT, linkmodes); } if (caps & MAC_10FD) { __set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10baseT1S_Full_BIT, linkmodes); } if (caps & MAC_100HD) { __set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100baseFX_Half_BIT, linkmodes); } if (caps & MAC_100FD) { __set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100baseT1_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100baseFX_Full_BIT, linkmodes); } if (caps & MAC_1000HD) __set_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, linkmodes); if (caps & MAC_1000FD) { __set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_1000baseT1_Full_BIT, linkmodes); } if (caps & MAC_2500FD) { __set_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT, linkmodes); } if (caps & MAC_5000FD) __set_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT, linkmodes); if (caps & MAC_10000FD) { __set_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10000baseCR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10000baseSR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10000baseLR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_10000baseER_Full_BIT, linkmodes); } if (caps & MAC_25000FD) { __set_bit(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT, linkmodes); } if (caps & MAC_40000FD) { __set_bit(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT, linkmodes); } if (caps & MAC_50000FD) { __set_bit(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_50000baseSR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_50000baseKR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_50000baseSR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_50000baseCR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_50000baseDR_Full_BIT, linkmodes); } if (caps & MAC_56000FD) { __set_bit(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT, linkmodes); } if (caps & MAC_100000FD) { __set_bit(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseKR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseSR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseCR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseLR2_ER2_FR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseDR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseKR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseSR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseLR_ER_FR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseCR_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_100000baseDR_Full_BIT, linkmodes); } if (caps & MAC_200000FD) { __set_bit(ETHTOOL_LINK_MODE_200000baseKR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_200000baseSR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_200000baseLR4_ER4_FR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_200000baseDR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_200000baseCR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_200000baseKR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_200000baseSR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_200000baseLR2_ER2_FR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_200000baseDR2_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_200000baseCR2_Full_BIT, linkmodes); } if (caps & MAC_400000FD) { __set_bit(ETHTOOL_LINK_MODE_400000baseKR8_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_400000baseSR8_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_400000baseLR8_ER8_FR8_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_400000baseDR8_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_400000baseCR8_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_400000baseKR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_400000baseSR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_400000baseLR4_ER4_FR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_400000baseDR4_Full_BIT, linkmodes); __set_bit(ETHTOOL_LINK_MODE_400000baseCR4_Full_BIT, linkmodes); } } static struct { unsigned long mask; int speed; unsigned int duplex; } phylink_caps_params[] = { { MAC_400000FD, SPEED_400000, DUPLEX_FULL }, { MAC_200000FD, SPEED_200000, DUPLEX_FULL }, { MAC_100000FD, SPEED_100000, DUPLEX_FULL }, { MAC_56000FD, SPEED_56000, DUPLEX_FULL }, { MAC_50000FD, SPEED_50000, DUPLEX_FULL }, { MAC_40000FD, SPEED_40000, DUPLEX_FULL }, { MAC_25000FD, SPEED_25000, DUPLEX_FULL }, { MAC_20000FD, SPEED_20000, DUPLEX_FULL }, { MAC_10000FD, SPEED_10000, DUPLEX_FULL }, { MAC_5000FD, SPEED_5000, DUPLEX_FULL }, { MAC_2500FD, SPEED_2500, DUPLEX_FULL }, { MAC_1000FD, SPEED_1000, DUPLEX_FULL }, { MAC_1000HD, SPEED_1000, DUPLEX_HALF }, { MAC_100FD, SPEED_100, DUPLEX_FULL }, { MAC_100HD, SPEED_100, DUPLEX_HALF }, { MAC_10FD, SPEED_10, DUPLEX_FULL }, { MAC_10HD, SPEED_10, DUPLEX_HALF }, }; /** * phylink_limit_mac_speed - limit the phylink_config to a maximum speed * @config: pointer to a &struct phylink_config * @max_speed: maximum speed * * Mask off MAC capabilities for speeds higher than the @max_speed parameter. * Any further motifications of config.mac_capabilities will override this. */ void phylink_limit_mac_speed(struct phylink_config *config, u32 max_speed) { int i; for (i = 0; i < ARRAY_SIZE(phylink_caps_params) && phylink_caps_params[i].speed > max_speed; i++) config->mac_capabilities &= ~phylink_caps_params[i].mask; } EXPORT_SYMBOL_GPL(phylink_limit_mac_speed); /** * phylink_cap_from_speed_duplex - Get mac capability from speed/duplex * @speed: the speed to search for * @duplex: the duplex to search for * * Find the mac capability for a given speed and duplex. * * Return: A mask with the mac capability patching @speed and @duplex, or 0 if * there were no matches. */ static unsigned long phylink_cap_from_speed_duplex(int speed, unsigned int duplex) { int i; for (i = 0; i < ARRAY_SIZE(phylink_caps_params); i++) { if (speed == phylink_caps_params[i].speed && duplex == phylink_caps_params[i].duplex) return phylink_caps_params[i].mask; } return 0; } /** * phylink_get_capabilities() - get capabilities for a given MAC * @interface: phy interface mode defined by &typedef phy_interface_t * @mac_capabilities: bitmask of MAC capabilities * @rate_matching: type of rate matching being performed * * Get the MAC capabilities that are supported by the @interface mode and * @mac_capabilities. */ static unsigned long phylink_get_capabilities(phy_interface_t interface, unsigned long mac_capabilities, int rate_matching) { int max_speed = phylink_interface_max_speed(interface); unsigned long caps = MAC_SYM_PAUSE | MAC_ASYM_PAUSE; unsigned long matched_caps = 0; switch (interface) { case PHY_INTERFACE_MODE_USXGMII: caps |= MAC_10000FD | MAC_5000FD | MAC_2500FD; fallthrough; case PHY_INTERFACE_MODE_RGMII_TXID: case PHY_INTERFACE_MODE_RGMII_RXID: case PHY_INTERFACE_MODE_RGMII_ID: case PHY_INTERFACE_MODE_RGMII: case PHY_INTERFACE_MODE_PSGMII: case PHY_INTERFACE_MODE_QSGMII: case PHY_INTERFACE_MODE_QUSGMII: case PHY_INTERFACE_MODE_SGMII: case PHY_INTERFACE_MODE_GMII: caps |= MAC_1000HD | MAC_1000FD; fallthrough; case PHY_INTERFACE_MODE_REVRMII: case PHY_INTERFACE_MODE_RMII: case PHY_INTERFACE_MODE_SMII: case PHY_INTERFACE_MODE_REVMII: case PHY_INTERFACE_MODE_MII: caps |= MAC_10HD | MAC_10FD; fallthrough; case PHY_INTERFACE_MODE_100BASEX: caps |= MAC_100HD | MAC_100FD; break; case PHY_INTERFACE_MODE_TBI: case PHY_INTERFACE_MODE_MOCA: case PHY_INTERFACE_MODE_RTBI: case PHY_INTERFACE_MODE_1000BASEX: caps |= MAC_1000HD; fallthrough; case PHY_INTERFACE_MODE_1000BASEKX: case PHY_INTERFACE_MODE_TRGMII: caps |= MAC_1000FD; break; case PHY_INTERFACE_MODE_2500BASEX: caps |= MAC_2500FD; break; case PHY_INTERFACE_MODE_5GBASER: caps |= MAC_5000FD; break; case PHY_INTERFACE_MODE_XGMII: case PHY_INTERFACE_MODE_RXAUI: case PHY_INTERFACE_MODE_XAUI: case PHY_INTERFACE_MODE_10GBASER: case PHY_INTERFACE_MODE_10GKR: caps |= MAC_10000FD; break; case PHY_INTERFACE_MODE_25GBASER: caps |= MAC_25000FD; break; case PHY_INTERFACE_MODE_XLGMII: caps |= MAC_40000FD; break; case PHY_INTERFACE_MODE_INTERNAL: caps |= ~0; break; case PHY_INTERFACE_MODE_NA: case PHY_INTERFACE_MODE_MAX: break; } switch (rate_matching) { case RATE_MATCH_OPEN_LOOP: /* TODO */ fallthrough; case RATE_MATCH_NONE: matched_caps = 0; break; case RATE_MATCH_PAUSE: { /* The MAC must support asymmetric pause towards the local * device for this. We could allow just symmetric pause, but * then we might have to renegotiate if the link partner * doesn't support pause. This is because there's no way to * accept pause frames without transmitting them if we only * support symmetric pause. */ if (!(mac_capabilities & MAC_SYM_PAUSE) || !(mac_capabilities & MAC_ASYM_PAUSE)) break; /* We can't adapt if the MAC doesn't support the interface's * max speed at full duplex. */ if (mac_capabilities & phylink_cap_from_speed_duplex(max_speed, DUPLEX_FULL)) { /* Although a duplex-matching phy might exist, we * conservatively remove these modes because the MAC * will not be aware of the half-duplex nature of the * link. */ matched_caps = GENMASK(__fls(caps), __fls(MAC_10HD)); matched_caps &= ~(MAC_1000HD | MAC_100HD | MAC_10HD); } break; } case RATE_MATCH_CRS: /* The MAC must support half duplex at the interface's max * speed. */ if (mac_capabilities & phylink_cap_from_speed_duplex(max_speed, DUPLEX_HALF)) { matched_caps = GENMASK(__fls(caps), __fls(MAC_10HD)); matched_caps &= mac_capabilities; } break; } return (caps & mac_capabilities) | matched_caps; } /** * phylink_validate_mask_caps() - Restrict link modes based on caps * @supported: ethtool bitmask for supported link modes. * @state: pointer to a &struct phylink_link_state. * @mac_capabilities: bitmask of MAC capabilities * * Calculate the supported link modes based on @mac_capabilities, and restrict * @supported and @state based on that. Use this function if your capabiliies * aren't constant, such as if they vary depending on the interface. */ static void phylink_validate_mask_caps(unsigned long *supported, struct phylink_link_state *state, unsigned long mac_capabilities) { __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; unsigned long caps; phylink_set_port_modes(mask); phylink_set(mask, Autoneg); caps = phylink_get_capabilities(state->interface, mac_capabilities, state->rate_matching); phylink_caps_to_linkmodes(mask, caps); linkmode_and(supported, supported, mask); linkmode_and(state->advertising, state->advertising, mask); } static int phylink_validate_mac_and_pcs(struct phylink *pl, unsigned long *supported, struct phylink_link_state *state) { unsigned long capabilities; struct phylink_pcs *pcs; int ret; /* Get the PCS for this interface mode */ if (pl->using_mac_select_pcs) { pcs = pl->mac_ops->mac_select_pcs(pl->config, state->interface); if (IS_ERR(pcs)) return PTR_ERR(pcs); } else { pcs = pl->pcs; } if (pcs) { /* The PCS, if present, must be setup before phylink_create() * has been called. If the ops is not initialised, print an * error and backtrace rather than oopsing the kernel. */ if (!pcs->ops) { phylink_err(pl, "interface %s: uninitialised PCS\n", phy_modes(state->interface)); dump_stack(); return -EINVAL; } /* Validate the link parameters with the PCS */ if (pcs->ops->pcs_validate) { ret = pcs->ops->pcs_validate(pcs, supported, state); if (ret < 0 || phylink_is_empty_linkmode(supported)) return -EINVAL; /* Ensure the advertising mask is a subset of the * supported mask. */ linkmode_and(state->advertising, state->advertising, supported); } } /* Then validate the link parameters with the MAC */ if (pl->mac_ops->mac_get_caps) capabilities = pl->mac_ops->mac_get_caps(pl->config, state->interface); else capabilities = pl->config->mac_capabilities; phylink_validate_mask_caps(supported, state, capabilities); return phylink_is_empty_linkmode(supported) ? -EINVAL : 0; } static void phylink_validate_one(struct phylink *pl, struct phy_device *phy, const unsigned long *supported, const struct phylink_link_state *state, phy_interface_t interface, unsigned long *accum_supported, unsigned long *accum_advertising) { __ETHTOOL_DECLARE_LINK_MODE_MASK(tmp_supported); struct phylink_link_state tmp_state; linkmode_copy(tmp_supported, supported); tmp_state = *state; tmp_state.interface = interface; if (phy) tmp_state.rate_matching = phy_get_rate_matching(phy, interface); if (!phylink_validate_mac_and_pcs(pl, tmp_supported, &tmp_state)) { phylink_dbg(pl, " interface %u (%s) rate match %s supports %*pbl\n", interface, phy_modes(interface), phy_rate_matching_to_str(tmp_state.rate_matching), __ETHTOOL_LINK_MODE_MASK_NBITS, tmp_supported); linkmode_or(accum_supported, accum_supported, tmp_supported); linkmode_or(accum_advertising, accum_advertising, tmp_state.advertising); } } static int phylink_validate_mask(struct phylink *pl, struct phy_device *phy, unsigned long *supported, struct phylink_link_state *state, const unsigned long *interfaces) { __ETHTOOL_DECLARE_LINK_MODE_MASK(all_adv) = { 0, }; __ETHTOOL_DECLARE_LINK_MODE_MASK(all_s) = { 0, }; int interface; for_each_set_bit(interface, interfaces, PHY_INTERFACE_MODE_MAX) phylink_validate_one(pl, phy, supported, state, interface, all_s, all_adv); linkmode_copy(supported, all_s); linkmode_copy(state->advertising, all_adv); return phylink_is_empty_linkmode(supported) ? -EINVAL : 0; } static int phylink_validate(struct phylink *pl, unsigned long *supported, struct phylink_link_state *state) { const unsigned long *interfaces = pl->config->supported_interfaces; if (state->interface == PHY_INTERFACE_MODE_NA) return phylink_validate_mask(pl, NULL, supported, state, interfaces); if (!test_bit(state->interface, interfaces)) return -EINVAL; return phylink_validate_mac_and_pcs(pl, supported, state); } static int phylink_parse_fixedlink(struct phylink *pl, const struct fwnode_handle *fwnode) { struct fwnode_handle *fixed_node; bool pause, asym_pause, autoneg; 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); linkmode_fill(pl->supported); linkmode_copy(pl->link_config.advertising, pl->supported); phylink_validate(pl, pl->supported, &pl->link_config); pause = phylink_test(pl->supported, Pause); asym_pause = phylink_test(pl->supported, Asym_Pause); autoneg = phylink_test(pl->supported, Autoneg); s = phy_lookup_setting(pl->link_config.speed, pl->link_config.duplex, pl->supported, true); linkmode_zero(pl->supported); phylink_set(pl->supported, MII); if (pause) phylink_set(pl->supported, Pause); if (asym_pause) phylink_set(pl->supported, Asym_Pause); if (autoneg) phylink_set(pl->supported, Autoneg); if (s) { __set_bit(s->bit, pl->supported); __set_bit(s->bit, pl->link_config.lp_advertising); } 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, const struct fwnode_handle *fwnode) { struct fwnode_handle *dn; const char *managed; unsigned long caps; 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) || pl->config->ovr_an_inband) { 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->cfg_link_an_mode = MLO_AN_INBAND; switch (pl->link_config.interface) { case PHY_INTERFACE_MODE_SGMII: case PHY_INTERFACE_MODE_PSGMII: case PHY_INTERFACE_MODE_QSGMII: case PHY_INTERFACE_MODE_QUSGMII: case PHY_INTERFACE_MODE_RGMII: case PHY_INTERFACE_MODE_RGMII_ID: case PHY_INTERFACE_MODE_RGMII_RXID: case PHY_INTERFACE_MODE_RGMII_TXID: case PHY_INTERFACE_MODE_RTBI: case PHY_INTERFACE_MODE_1000BASEX: case PHY_INTERFACE_MODE_2500BASEX: case PHY_INTERFACE_MODE_5GBASER: case PHY_INTERFACE_MODE_25GBASER: case PHY_INTERFACE_MODE_USXGMII: case PHY_INTERFACE_MODE_10GKR: case PHY_INTERFACE_MODE_10GBASER: case PHY_INTERFACE_MODE_XLGMII: caps = ~(MAC_SYM_PAUSE | MAC_ASYM_PAUSE); caps = phylink_get_capabilities(pl->link_config.interface, caps, RATE_MATCH_NONE); phylink_caps_to_linkmodes(pl->supported, caps); 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; } } 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 (!linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, state->advertising)) 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_an_pause(struct phylink_link_state *state) { bool tx_pause, rx_pause; 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_pcs_pre_config(struct phylink_pcs *pcs, phy_interface_t interface) { if (pcs && pcs->ops->pcs_pre_config) pcs->ops->pcs_pre_config(pcs, interface); } static int phylink_pcs_post_config(struct phylink_pcs *pcs, phy_interface_t interface) { int err = 0; if (pcs && pcs->ops->pcs_post_config) err = pcs->ops->pcs_post_config(pcs, interface); return err; } static void phylink_pcs_disable(struct phylink_pcs *pcs) { if (pcs && pcs->ops->pcs_disable) pcs->ops->pcs_disable(pcs); } static int phylink_pcs_enable(struct phylink_pcs *pcs) { int err = 0; if (pcs && pcs->ops->pcs_enable) err = pcs->ops->pcs_enable(pcs); return err; } static int phylink_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode, const struct phylink_link_state *state, bool permit_pause_to_mac) { if (!pcs) return 0; return pcs->ops->pcs_config(pcs, neg_mode, state->interface, state->advertising, permit_pause_to_mac); } static void phylink_pcs_link_up(struct phylink_pcs *pcs, unsigned int neg_mode, phy_interface_t interface, int speed, int duplex) { if (pcs && pcs->ops->pcs_link_up) pcs->ops->pcs_link_up(pcs, neg_mode, interface, speed, duplex); } static void phylink_pcs_poll_stop(struct phylink *pl) { if (pl->cfg_link_an_mode == MLO_AN_INBAND) del_timer(&pl->link_poll); } static void phylink_pcs_poll_start(struct phylink *pl) { if (pl->pcs && pl->pcs->poll && pl->cfg_link_an_mode == MLO_AN_INBAND) mod_timer(&pl->link_poll, jiffies + HZ); } int phylink_pcs_pre_init(struct phylink *pl, struct phylink_pcs *pcs) { int ret = 0; /* Signal to PCS driver that MAC requires RX clock for init */ if (pl->config->mac_requires_rxc) pcs->rxc_always_on = true; if (pcs->ops->pcs_pre_init) ret = pcs->ops->pcs_pre_init(pcs); return ret; } EXPORT_SYMBOL_GPL(phylink_pcs_pre_init); static void phylink_mac_config(struct phylink *pl, const struct phylink_link_state *state) { struct phylink_link_state st = *state; /* Stop drivers incorrectly using these */ linkmode_zero(st.lp_advertising); st.speed = SPEED_UNKNOWN; st.duplex = DUPLEX_UNKNOWN; st.an_complete = false; st.link = false; phylink_dbg(pl, "%s: mode=%s/%s/%s adv=%*pb pause=%02x\n", __func__, phylink_an_mode_str(pl->cur_link_an_mode), phy_modes(st.interface), phy_rate_matching_to_str(st.rate_matching), __ETHTOOL_LINK_MODE_MASK_NBITS, st.advertising, st.pause); pl->mac_ops->mac_config(pl->config, pl->cur_link_an_mode, &st); } static void phylink_pcs_an_restart(struct phylink *pl) { if (pl->pcs && linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, pl->link_config.advertising) && phy_interface_mode_is_8023z(pl->link_config.interface) && phylink_autoneg_inband(pl->cur_link_an_mode)) pl->pcs->ops->pcs_an_restart(pl->pcs); } /** * phylink_pcs_neg_mode() - helper to determine PCS inband mode * @mode: one of %MLO_AN_FIXED, %MLO_AN_PHY, %MLO_AN_INBAND. * @interface: interface mode to be used * @advertising: adertisement ethtool link mode mask * * Determines the negotiation mode to be used by the PCS, and returns * one of: * * - %PHYLINK_PCS_NEG_NONE: interface mode does not support inband * - %PHYLINK_PCS_NEG_OUTBAND: an out of band mode (e.g. reading the PHY) * will be used. * - %PHYLINK_PCS_NEG_INBAND_DISABLED: inband mode selected but autoneg * disabled * - %PHYLINK_PCS_NEG_INBAND_ENABLED: inband mode selected and autoneg enabled * * Note: this is for cases where the PCS itself is involved in negotiation * (e.g. Clause 37, SGMII and similar) not Clause 73. */ static unsigned int phylink_pcs_neg_mode(unsigned int mode, phy_interface_t interface, const unsigned long *advertising) { unsigned int neg_mode; switch (interface) { case PHY_INTERFACE_MODE_SGMII: case PHY_INTERFACE_MODE_QSGMII: case PHY_INTERFACE_MODE_QUSGMII: case PHY_INTERFACE_MODE_USXGMII: /* These protocols are designed for use with a PHY which * communicates its negotiation result back to the MAC via * inband communication. Note: there exist PHYs that run * with SGMII but do not send the inband data. */ if (!phylink_autoneg_inband(mode)) neg_mode = PHYLINK_PCS_NEG_OUTBAND; else neg_mode = PHYLINK_PCS_NEG_INBAND_ENABLED; break; case PHY_INTERFACE_MODE_1000BASEX: case PHY_INTERFACE_MODE_2500BASEX: /* 1000base-X is designed for use media-side for Fibre * connections, and thus the Autoneg bit needs to be * taken into account. We also do this for 2500base-X * as well, but drivers may not support this, so may * need to override this. */ if (!phylink_autoneg_inband(mode)) neg_mode = PHYLINK_PCS_NEG_OUTBAND; else if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, advertising)) neg_mode = PHYLINK_PCS_NEG_INBAND_ENABLED; else neg_mode = PHYLINK_PCS_NEG_INBAND_DISABLED; break; default: neg_mode = PHYLINK_PCS_NEG_NONE; break; } return neg_mode; } static void phylink_major_config(struct phylink *pl, bool restart, const struct phylink_link_state *state) { struct phylink_pcs *pcs = NULL; bool pcs_changed = false; unsigned int rate_kbd; unsigned int neg_mode; int err; phylink_dbg(pl, "major config %s\n", phy_modes(state->interface)); pl->pcs_neg_mode = phylink_pcs_neg_mode(pl->cur_link_an_mode, state->interface, state->advertising); if (pl->using_mac_select_pcs) { pcs = pl->mac_ops->mac_select_pcs(pl->config, state->interface); if (IS_ERR(pcs)) { phylink_err(pl, "mac_select_pcs unexpectedly failed: %pe\n", pcs); return; } pcs_changed = pcs && pl->pcs != pcs; } phylink_pcs_poll_stop(pl); if (pl->mac_ops->mac_prepare) { err = pl->mac_ops->mac_prepare(pl->config, pl->cur_link_an_mode, state->interface); if (err < 0) { phylink_err(pl, "mac_prepare failed: %pe\n", ERR_PTR(err)); return; } } /* If we have a new PCS, switch to the new PCS after preparing the MAC * for the change. */ if (pcs_changed) { phylink_pcs_disable(pl->pcs); if (pl->pcs) pl->pcs->phylink = NULL; pcs->phylink = pl; pl->pcs = pcs; } if (pl->pcs) phylink_pcs_pre_config(pl->pcs, state->interface); phylink_mac_config(pl, state); if (pl->pcs) phylink_pcs_post_config(pl->pcs, state->interface); if (pl->pcs_state == PCS_STATE_STARTING || pcs_changed) phylink_pcs_enable(pl->pcs); neg_mode = pl->cur_link_an_mode; if (pl->pcs && pl->pcs->neg_mode) neg_mode = pl->pcs_neg_mode; err = phylink_pcs_config(pl->pcs, neg_mode, state, !!(pl->link_config.pause & MLO_PAUSE_AN)); if (err < 0) phylink_err(pl, "pcs_config failed: %pe\n", ERR_PTR(err)); else if (err > 0) restart = true; if (restart) phylink_pcs_an_restart(pl); if (pl->mac_ops->mac_finish) { err = pl->mac_ops->mac_finish(pl->config, pl->cur_link_an_mode, state->interface); if (err < 0) phylink_err(pl, "mac_finish failed: %pe\n", ERR_PTR(err)); } if (pl->sfp_bus) { rate_kbd = phylink_interface_signal_rate(state->interface); if (rate_kbd) sfp_upstream_set_signal_rate(pl->sfp_bus, rate_kbd); } phylink_pcs_poll_start(pl); } /* * Reconfigure for a change of inband advertisement. * If we have a separate PCS, we only need to call its pcs_config() method, * and then restart AN if it indicates something changed. Otherwise, we do * the full MAC reconfiguration. */ static int phylink_change_inband_advert(struct phylink *pl) { unsigned int neg_mode; int ret; if (test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) return 0; phylink_dbg(pl, "%s: mode=%s/%s adv=%*pb pause=%02x\n", __func__, phylink_an_mode_str(pl->cur_link_an_mode), phy_modes(pl->link_config.interface), __ETHTOOL_LINK_MODE_MASK_NBITS, pl->link_config.advertising, pl->link_config.pause); /* Recompute the PCS neg mode */ pl->pcs_neg_mode = phylink_pcs_neg_mode(pl->cur_link_an_mode, pl->link_config.interface, pl->link_config.advertising); neg_mode = pl->cur_link_an_mode; if (pl->pcs->neg_mode) neg_mode = pl->pcs_neg_mode; /* Modern PCS-based method; update the advert at the PCS, and * restart negotiation if the pcs_config() helper indicates that * the programmed advertisement has changed. */ ret = phylink_pcs_config(pl->pcs, neg_mode, &pl->link_config, !!(pl->link_config.pause & MLO_PAUSE_AN)); if (ret < 0) return ret; if (ret > 0) phylink_pcs_an_restart(pl); return 0; } 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->rate_matching = pl->link_config.rate_matching; if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, state->advertising)) { state->speed = SPEED_UNKNOWN; state->duplex = DUPLEX_UNKNOWN; state->pause = MLO_PAUSE_NONE; } else { state->speed = pl->link_config.speed; state->duplex = pl->link_config.duplex; state->pause = pl->link_config.pause; } state->an_complete = 0; state->link = 1; if (pl->pcs) pl->pcs->ops->pcs_get_state(pl->pcs, state); else state->link = 0; } /* 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); state->pause = MLO_PAUSE_NONE; phylink_resolve_an_pause(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_major_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; unsigned int neg_mode; int speed, duplex; bool rx_pause; speed = link_state.speed; duplex = link_state.duplex; rx_pause = !!(link_state.pause & MLO_PAUSE_RX); switch (link_state.rate_matching) { case RATE_MATCH_PAUSE: /* The PHY is doing rate matchion from the media rate (in * the link_state) to the interface speed, and will send * pause frames to the MAC to limit its transmission speed. */ speed = phylink_interface_max_speed(link_state.interface); duplex = DUPLEX_FULL; rx_pause = true; break; case RATE_MATCH_CRS: /* The PHY is doing rate matchion from the media rate (in * the link_state) to the interface speed, and will cause * collisions to the MAC to limit its transmission speed. */ speed = phylink_interface_max_speed(link_state.interface); duplex = DUPLEX_HALF; break; } pl->cur_interface = link_state.interface; neg_mode = pl->cur_link_an_mode; if (pl->pcs && pl->pcs->neg_mode) neg_mode = pl->pcs_neg_mode; phylink_pcs_link_up(pl->pcs, neg_mode, pl->cur_interface, speed, duplex); pl->mac_ops->mac_link_up(pl->config, pl->phydev, pl->cur_link_an_mode, pl->cur_interface, speed, duplex, !!(link_state.pause & MLO_PAUSE_TX), rx_pause); 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; bool mac_config = false; bool retrigger = false; bool cur_link_state; mutex_lock(&pl->state_mutex); if (pl->netdev) cur_link_state = netif_carrier_ok(ndev); else cur_link_state = pl->old_link_state; if (pl->phylink_disable_state) { pl->mac_link_dropped = false; link_state.link = false; } else if (pl->mac_link_dropped) { link_state.link = false; retrigger = true; } else { switch (pl->cur_link_an_mode) { case MLO_AN_PHY: link_state = pl->phy_state; phylink_apply_manual_flow(pl, &link_state); mac_config = link_state.link; break; case MLO_AN_FIXED: phylink_get_fixed_state(pl, &link_state); mac_config = link_state.link; break; case MLO_AN_INBAND: phylink_mac_pcs_get_state(pl, &link_state); /* The PCS may have a latching link-fail indicator. * If the link was up, bring the link down and * re-trigger the resolve. Otherwise, re-read the * PCS state to get the current status of the link. */ if (!link_state.link) { if (cur_link_state) retrigger = true; else 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) { /* If the interface has changed, force a * link down event if the link isn't already * down, and re-resolve. */ if (link_state.interface != pl->phy_state.interface) { retrigger = true; link_state.link = false; } link_state.interface = pl->phy_state.interface; /* If we are doing rate matching, then the * link speed/duplex comes from the PHY */ if (pl->phy_state.rate_matching) { link_state.rate_matching = pl->phy_state.rate_matching; link_state.speed = pl->phy_state.speed; link_state.duplex = pl->phy_state.duplex; } /* If we have a PHY, we need to update with * the PHY flow control bits. */ link_state.pause = pl->phy_state.pause; mac_config = true; } phylink_apply_manual_flow(pl, &link_state); break; } } if (mac_config) { if (link_state.interface != pl->link_config.interface) { /* The interface has changed, force the link down and * then reconfigure. */ if (cur_link_state) { phylink_link_down(pl); cur_link_state = false; } phylink_major_config(pl, false, &link_state); pl->link_config.interface = link_state.interface; } } if (link_state.link != cur_link_state) { 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 && retrigger) { 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_enable_and_run_resolve(struct phylink *pl, int bit) { clear_bit(bit, &pl->phylink_disable_state); phylink_run_resolve(pl); } 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, const struct fwnode_handle *fwnode) { struct sfp_bus *bus; int ret; if (!fwnode) return 0; bus = sfp_bus_find_fwnode(fwnode); if (IS_ERR(bus)) { phylink_err(pl, "unable to attach SFP bus: %pe\n", bus); return PTR_ERR(bus); } 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, const struct fwnode_handle *fwnode, phy_interface_t iface, const struct phylink_mac_ops *mac_ops) { bool using_mac_select_pcs = false; struct phylink *pl; int ret; /* Validate the supplied configuration */ if (phy_interface_empty(config->supported_interfaces)) { dev_err(config->dev, "phylink: error: empty supported_interfaces\n"); return ERR_PTR(-EINVAL); } if (mac_ops->mac_select_pcs && mac_ops->mac_select_pcs(config, PHY_INTERFACE_MODE_NA) != ERR_PTR(-EOPNOTSUPP)) using_mac_select_pcs = true; 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); netif_carrier_off(pl->netdev); } else if (config->type == PHYLINK_DEV) { pl->dev = config->dev; } else { kfree(pl); return ERR_PTR(-EINVAL); } pl->using_mac_select_pcs = using_mac_select_pcs; 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->pcs_state = PCS_STATE_DOWN; pl->mac_ops = mac_ops; __set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); timer_setup(&pl->link_poll, phylink_fixed_poll, 0); linkmode_fill(pl->supported); 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); /** * 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); /** * phylink_expects_phy() - Determine if phylink expects a phy to be attached * @pl: a pointer to a &struct phylink returned from phylink_create() * * When using fixed-link mode, or in-band mode with 1000base-X or 2500base-X, * no PHY is needed. * * Returns true if phylink will be expecting a PHY. */ bool phylink_expects_phy(struct phylink *pl) { if (pl->cfg_link_an_mode == MLO_AN_FIXED || (pl->cfg_link_an_mode == MLO_AN_INBAND && phy_interface_mode_is_8023z(pl->link_config.interface))) return false; return true; } EXPORT_SYMBOL_GPL(phylink_expects_phy); 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.rate_matching = phydev->rate_matching; 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/%s/%s\n", up ? "up" : "down", phy_modes(phydev->interface), phy_speed_to_str(phydev->speed), phy_duplex_to_str(phydev->duplex), phy_rate_matching_to_str(phydev->rate_matching), phylink_pause_to_str(pl->phy_state.pause)); } static int phylink_validate_phy(struct phylink *pl, struct phy_device *phy, unsigned long *supported, struct phylink_link_state *state) { DECLARE_PHY_INTERFACE_MASK(interfaces); /* If the PHY provides a bitmap of the interfaces it will be using * depending on the negotiated media speeds, use this to validate * which ethtool link modes can be used. */ if (!phy_interface_empty(phy->possible_interfaces)) { /* We only care about the union of the PHY's interfaces and * those which the host supports. */ phy_interface_and(interfaces, phy->possible_interfaces, pl->config->supported_interfaces); if (phy_interface_empty(interfaces)) { phylink_err(pl, "PHY has no common interfaces\n"); return -EINVAL; } if (phy_on_sfp(phy)) { /* If the PHY is on a SFP, limit the interfaces to * those that can be used with a SFP module. */ phy_interface_and(interfaces, interfaces, phylink_sfp_interfaces); if (phy_interface_empty(interfaces)) { phylink_err(pl, "SFP PHY's possible interfaces becomes empty\n"); return -EINVAL; } } phylink_dbg(pl, "PHY %s uses interfaces %*pbl, validating %*pbl\n", phydev_name(phy), (int)PHY_INTERFACE_MODE_MAX, phy->possible_interfaces, (int)PHY_INTERFACE_MODE_MAX, interfaces); return phylink_validate_mask(pl, phy, supported, state, interfaces); } phylink_dbg(pl, "PHY %s doesn't supply possible interfaces\n", phydev_name(phy)); /* Check whether we would use rate matching for the proposed interface * mode. */ state->rate_matching = phy_get_rate_matching(phy, state->interface); /* Clause 45 PHYs may switch their Serdes lane between, e.g. 10GBASE-R, * 5GBASE-R, 2500BASE-X and SGMII if they are not using rate matching. * For some interface modes (e.g. RXAUI, XAUI and USXGMII) switching * their Serdes is either unnecessary or not reasonable. * * For these which switch interface modes, we really need to know which * interface modes the PHY supports to properly work out which ethtool * linkmodes can be supported. For now, as a work-around, we validate * against all interface modes, which may lead to more ethtool link * modes being advertised than are actually supported. */ if (phy->is_c45 && state->rate_matching == RATE_MATCH_NONE && state->interface != PHY_INTERFACE_MODE_RXAUI && state->interface != PHY_INTERFACE_MODE_XAUI && state->interface != PHY_INTERFACE_MODE_USXGMII) state->interface = PHY_INTERFACE_MODE_NA; return phylink_validate(pl, supported, state); } 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); config.interface = interface; ret = phylink_validate_phy(pl, phy, supported, &config); if (ret) { phylink_warn(pl, "validation of %s with support %*pb and advertisement %*pb failed: %pe\n", phy_modes(config.interface), __ETHTOOL_LINK_MODE_MASK_NBITS, phy->supported, __ETHTOOL_LINK_MODE_MASK_NBITS, config.advertising, ERR_PTR(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; pl->phy_state.rate_matching = RATE_MATCH_NONE; 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: %s setting supported %*pb advertising %*pb\n", phy_modes(interface), __ETHTOOL_LINK_MODE_MASK_NBITS, pl->supported, __ETHTOOL_LINK_MODE_MASK_NBITS, phy->advertising); if (phy_interrupt_is_valid(phy)) phy_request_interrupt(phy); if (pl->config->mac_managed_pm) phy->mac_managed_pm = true; return 0; } static int phylink_attach_phy(struct phylink *pl, struct phy_device *phy, phy_interface_t interface) { u32 flags = 0; 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) && !pl->sfp_bus))) return -EINVAL; if (pl->phydev) return -EBUSY; if (pl->config->mac_requires_rxc) flags |= PHY_F_RXC_ALWAYS_ON; return phy_attach_direct(pl->netdev, phy, flags, 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) { return phylink_fwnode_phy_connect(pl, of_fwnode_handle(dn), flags); } EXPORT_SYMBOL_GPL(phylink_of_phy_connect); /** * phylink_fwnode_phy_connect() - connect the PHY specified in the fwnode. * @pl: a pointer to a &struct phylink returned from phylink_create() * @fwnode: a pointer to a &struct fwnode_handle. * @flags: PHY-specific flags to communicate to the PHY device driver * * Connect the phy specified @fwnode to the phylink instance specified * by @pl. * * Returns 0 on success or a negative errno. */ int phylink_fwnode_phy_connect(struct phylink *pl, const struct fwnode_handle *fwnode, u32 flags) { struct fwnode_handle *phy_fwnode; 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_fwnode = fwnode_get_phy_node(fwnode); if (IS_ERR(phy_fwnode)) { if (pl->cfg_link_an_mode == MLO_AN_PHY) return -ENODEV; return 0; } phy_dev = fwnode_phy_find_device(phy_fwnode); /* We're done with the phy_node handle */ fwnode_handle_put(phy_fwnode); if (!phy_dev) return -ENODEV; /* Use PHY device/driver interface */ if (pl->link_interface == PHY_INTERFACE_MODE_NA) { pl->link_interface = phy_dev->interface; pl->link_config.interface = pl->link_interface; } if (pl->config->mac_requires_rxc) flags |= PHY_F_RXC_ALWAYS_ON; ret = phy_attach_direct(pl->netdev, phy_dev, flags, pl->link_interface); phy_device_free(phy_dev); 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_fwnode_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); static void phylink_link_changed(struct phylink *pl, bool up, const char *what) { if (!up) pl->mac_link_dropped = true; phylink_run_resolve(pl); phylink_dbg(pl, "%s link %s\n", what, up ? "up" : "down"); } /** * 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) { phylink_link_changed(pl, up, "mac"); } EXPORT_SYMBOL_GPL(phylink_mac_change); /** * phylink_pcs_change() - notify phylink of a change to PCS link state * @pcs: pointer to &struct phylink_pcs * @up: indicates whether the link is currently up. * * The PCS driver should call this when the state of its link changes * (e.g. link failure, new negotiation results, etc.) Note: it should * not determine "up" by reading the BMSR. If in doubt about the link * state at interrupt time, then pass true if pcs_get_state() returns * the latched link-down state, otherwise pass false. */ void phylink_pcs_change(struct phylink_pcs *pcs, bool up) { struct phylink *pl = pcs->phylink; if (pl) phylink_link_changed(pl, up, "pcs"); } EXPORT_SYMBOL_GPL(phylink_pcs_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); pl->pcs_state = PCS_STATE_STARTING; /* 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); pl->pcs_state = PCS_STATE_STARTED; phylink_enable_and_run_resolve(pl, PHYLINK_DISABLE_STOPPED); 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; } if (pl->cfg_link_an_mode == MLO_AN_FIXED) poll |= pl->config->poll_fixed_state; 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. * * This will synchronously bring down the link if the link is not already * down (in other words, it will trigger a mac_link_down() method call.) */ 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); pl->pcs_state = PCS_STATE_DOWN; phylink_pcs_disable(pl->pcs); } EXPORT_SYMBOL_GPL(phylink_stop); /** * phylink_suspend() - handle a network device suspend event * @pl: a pointer to a &struct phylink returned from phylink_create() * @mac_wol: true if the MAC needs to receive packets for Wake-on-Lan * * Handle a network device suspend event. There are several cases: * * - If Wake-on-Lan is not active, we can bring down the link between * the MAC and PHY by calling phylink_stop(). * - If Wake-on-Lan is active, and being handled only by the PHY, we * can also bring down the link between the MAC and PHY. * - If Wake-on-Lan is active, but being handled by the MAC, the MAC * still needs to receive packets, so we can not bring the link down. */ void phylink_suspend(struct phylink *pl, bool mac_wol) { ASSERT_RTNL(); if (mac_wol && (!pl->netdev || pl->netdev->wol_enabled)) { /* Wake-on-Lan enabled, MAC handling */ mutex_lock(&pl->state_mutex); /* Stop the resolver bringing the link up */ __set_bit(PHYLINK_DISABLE_MAC_WOL, &pl->phylink_disable_state); /* Disable the carrier, to prevent transmit timeouts, * but one would hope all packets have been sent. This * also means phylink_resolve() will do nothing. */ if (pl->netdev) netif_carrier_off(pl->netdev); else pl->old_link_state = false; /* We do not call mac_link_down() here as we want the * link to remain up to receive the WoL packets. */ mutex_unlock(&pl->state_mutex); } else { phylink_stop(pl); } } EXPORT_SYMBOL_GPL(phylink_suspend); /** * phylink_resume() - handle a network device resume event * @pl: a pointer to a &struct phylink returned from phylink_create() * * Undo the effects of phylink_suspend(), returning the link to an * operational state. */ void phylink_resume(struct phylink *pl) { ASSERT_RTNL(); if (test_bit(PHYLINK_DISABLE_MAC_WOL, &pl->phylink_disable_state)) { /* Wake-on-Lan enabled, MAC handling */ /* Call mac_link_down() so we keep the overall state balanced. * Do this under the state_mutex lock for consistency. This * will cause a "Link Down" message to be printed during * resume, which is harmless - the true link state will be * printed when we run a resolve. */ mutex_lock(&pl->state_mutex); phylink_link_down(pl); mutex_unlock(&pl->state_mutex); /* Re-apply the link parameters so that all the settings get * restored to the MAC. */ phylink_mac_initial_config(pl, true); /* Re-enable and re-resolve the link parameters */ phylink_enable_and_run_resolve(pl, PHYLINK_DISABLE_MAC_WOL); } else { phylink_start(pl); } } EXPORT_SYMBOL_GPL(phylink_resume); /** * 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); if (kset->base.rate_matching == RATE_MATCH_NONE) { kset->base.speed = state->speed; kset->base.duplex = state->duplex; } kset->base.autoneg = linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, state->advertising) ? 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 phylink_link_state config; const struct phy_setting *s; ASSERT_RTNL(); if (pl->phydev) { struct ethtool_link_ksettings phy_kset = *kset; linkmode_and(phy_kset.link_modes.advertising, phy_kset.link_modes.advertising, pl->supported); /* We can rely on phylib for this update; we also do not need * to update the pl->link_config settings: * - the configuration returned via ksettings_get() will come * from phylib whenever a PHY is present. * - link_config.interface will be updated by the PHY calling * back via phylink_phy_change() and a subsequent resolve. * - initial link configuration for PHY mode comes from the * last phy state updated via phylink_phy_change(). * - other configuration changes (e.g. pause modes) are * performed directly via phylib. * - if in in-band mode with a PHY, the link configuration * is passed on the link from the PHY, and all of * link_config.{speed,duplex,an_enabled,pause} are not used. * - the only possible use would be link_config.advertising * pause modes when in 1000base-X mode with a PHY, but in * the presence of a PHY, this should not be changed as that * should be determined from the media side advertisement. */ return phy_ethtool_ksettings_set(pl->phydev, &phy_kset); } config = pl->link_config; /* Mask out unsupported advertisements */ linkmode_and(config.advertising, kset->link_modes.advertising, pl->supported); /* FIXME: should we reject autoneg if phy/mac does not support it? */ switch (kset->base.autoneg) { case AUTONEG_DISABLE: /* Autonegotiation disabled, select a suitable speed and * duplex. */ s = phy_lookup_setting(kset->base.speed, kset->base.duplex, pl->supported, false); if (!s) return -EINVAL; /* If we have a fixed link, refuse to change link parameters. * If the link parameters match, accept them but do nothing. */ if (pl->cur_link_an_mode == MLO_AN_FIXED) { if (s->speed != pl->link_config.speed || s->duplex != pl->link_config.duplex) return -EINVAL; return 0; } config.speed = s->speed; config.duplex = s->duplex; break; case AUTONEG_ENABLE: /* If we have a fixed link, allow autonegotiation (since that * is our default case) but do not allow the advertisement to * be changed. If the advertisement matches, simply return. */ if (pl->cur_link_an_mode == MLO_AN_FIXED) { if (!linkmode_equal(config.advertising, pl->link_config.advertising)) return -EINVAL; return 0; } config.speed = SPEED_UNKNOWN; config.duplex = DUPLEX_UNKNOWN; break; default: return -EINVAL; } /* We have ruled out the case with a PHY attached, and the * fixed-link cases. All that is left are in-band links. */ linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising, kset->base.autoneg == AUTONEG_ENABLE); /* If this link is with an SFP, ensure that changes to advertised modes * also cause the associated interface to be selected such that the * link can be configured correctly. */ if (pl->sfp_bus) { config.interface = sfp_select_interface(pl->sfp_bus, config.advertising); if (config.interface == PHY_INTERFACE_MODE_NA) { phylink_err(pl, "selection of interface failed, advertisement %*pb\n", __ETHTOOL_LINK_MODE_MASK_NBITS, config.advertising); return -EINVAL; } /* Revalidate with the selected interface */ linkmode_copy(support, pl->supported); if (phylink_validate(pl, support, &config)) { phylink_err(pl, "validation of %s/%s with support %*pb failed\n", phylink_an_mode_str(pl->cur_link_an_mode), phy_modes(config.interface), __ETHTOOL_LINK_MODE_MASK_NBITS, support); return -EINVAL; } } else { /* Validate without changing the current supported mask. */ linkmode_copy(support, pl->supported); if (phylink_validate(pl, support, &config)) return -EINVAL; } /* If autonegotiation is enabled, we must have an advertisement */ if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising) && phylink_is_empty_linkmode(config.advertising)) return -EINVAL; mutex_lock(&pl->state_mutex); pl->link_config.speed = config.speed; pl->link_config.duplex = config.duplex; if (pl->link_config.interface != config.interface) { /* The interface changed, e.g. 1000base-X <-> 2500base-X */ /* We need to force the link down, then change the interface */ if (pl->old_link_state) { phylink_link_down(pl); pl->old_link_state = false; } if (!test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) phylink_major_config(pl, false, &config); pl->link_config.interface = config.interface; linkmode_copy(pl->link_config.advertising, config.advertising); } else if (!linkmode_equal(pl->link_config.advertising, config.advertising)) { linkmode_copy(pl->link_config.advertising, config.advertising); phylink_change_inband_advert(pl); } 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_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->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; /* Update our in-band advertisement, triggering a renegotiation if * the advertisement changed. */ if (!pl->phydev) phylink_change_inband_advert(pl); 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_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_keee for the read parameters */ int phylink_ethtool_get_eee(struct phylink *pl, struct ethtool_keee *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_keee for the desired parameters */ int phylink_ethtool_set_eee(struct phylink *pl, struct ethtool_keee *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); return mdiobus_c45_read(pl->phydev->mdio.bus, prtad, devad, reg); } if (phydev->is_c45) { switch (reg) { case MII_BMCR: case MII_BMSR: case MII_PHYSID1: case MII_PHYSID2: devad = __ffs(phydev->c45_ids.mmds_present); break; case MII_ADVERTISE: case MII_LPA: if (!(phydev->c45_ids.mmds_present & 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; return mdiobus_c45_read(pl->phydev->mdio.bus, prtad, devad, reg); } return mdiobus_read(pl->phydev->mdio.bus, phy_id, reg); } 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); return mdiobus_c45_write(pl->phydev->mdio.bus, prtad, devad, reg, val); } if (phydev->is_c45) { switch (reg) { case MII_BMCR: case MII_BMSR: case MII_PHYSID1: case MII_PHYSID2: devad = __ffs(phydev->c45_ids.mmds_present); break; case MII_ADVERTISE: case MII_LPA: if (!(phydev->c45_ids.mmds_present & 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; } return mdiobus_c45_write(pl->phydev->mdio.bus, phy_id, devad, reg, val); } return mdiobus_write(phydev->mdio.bus, phy_id, reg, 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; fallthrough; 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; fallthrough; 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); /** * phylink_speed_down() - set the non-SFP PHY to lowest speed supported by both * link partners * @pl: a pointer to a &struct phylink returned from phylink_create() * @sync: perform action synchronously * * If we have a PHY that is not part of a SFP module, then set the speed * as described in the phy_speed_down() function. Please see this function * for a description of the @sync parameter. * * Returns zero if there is no PHY, otherwise as per phy_speed_down(). */ int phylink_speed_down(struct phylink *pl, bool sync) { int ret = 0; ASSERT_RTNL(); if (!pl->sfp_bus && pl->phydev) ret = phy_speed_down(pl->phydev, sync); return ret; } EXPORT_SYMBOL_GPL(phylink_speed_down); /** * phylink_speed_up() - restore the advertised speeds prior to the call to * phylink_speed_down() * @pl: a pointer to a &struct phylink returned from phylink_create() * * If we have a PHY that is not part of a SFP module, then restore the * PHY speeds as per phy_speed_up(). * * Returns zero if there is no PHY, otherwise as per phy_speed_up(). */ int phylink_speed_up(struct phylink *pl) { int ret = 0; ASSERT_RTNL(); if (!pl->sfp_bus && pl->phydev) ret = phy_speed_up(pl->phydev); return ret; } EXPORT_SYMBOL_GPL(phylink_speed_up); 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 phy_interface_t phylink_choose_sfp_interface(struct phylink *pl, const unsigned long *intf) { phy_interface_t interface; size_t i; interface = PHY_INTERFACE_MODE_NA; for (i = 0; i < ARRAY_SIZE(phylink_sfp_interface_preference); i++) if (test_bit(phylink_sfp_interface_preference[i], intf)) { interface = phylink_sfp_interface_preference[i]; break; } return interface; } static void phylink_sfp_set_config(struct phylink *pl, u8 mode, unsigned long *supported, struct phylink_link_state *state) { bool changed = false; phylink_dbg(pl, "requesting link mode %s/%s with support %*pb\n", phylink_an_mode_str(mode), phy_modes(state->interface), __ETHTOOL_LINK_MODE_MASK_NBITS, supported); if (!linkmode_equal(pl->supported, supported)) { linkmode_copy(pl->supported, supported); changed = true; } if (!linkmode_equal(pl->link_config.advertising, state->advertising)) { linkmode_copy(pl->link_config.advertising, state->advertising); changed = true; } if (pl->cur_link_an_mode != mode || pl->link_config.interface != state->interface) { pl->cur_link_an_mode = mode; pl->link_config.interface = state->interface; changed = true; phylink_info(pl, "switched to %s/%s link mode\n", phylink_an_mode_str(mode), phy_modes(state->interface)); } if (changed && !test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state)) phylink_mac_initial_config(pl, false); } static int phylink_sfp_config_phy(struct phylink *pl, u8 mode, struct phy_device *phy) { __ETHTOOL_DECLARE_LINK_MODE_MASK(support1); __ETHTOOL_DECLARE_LINK_MODE_MASK(support); struct phylink_link_state config; phy_interface_t iface; int ret; linkmode_copy(support, phy->supported); memset(&config, 0, sizeof(config)); linkmode_copy(config.advertising, phy->advertising); config.interface = PHY_INTERFACE_MODE_NA; config.speed = SPEED_UNKNOWN; config.duplex = DUPLEX_UNKNOWN; config.pause = MLO_PAUSE_AN; /* 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: %pe\n", __ETHTOOL_LINK_MODE_MASK_NBITS, support, ERR_PTR(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: %pe\n", phylink_an_mode_str(mode), phy_modes(config.interface), __ETHTOOL_LINK_MODE_MASK_NBITS, support, ERR_PTR(ret)); return ret; } pl->link_port = pl->sfp_port; phylink_sfp_set_config(pl, mode, support, &config); return 0; } static int phylink_sfp_config_optical(struct phylink *pl) { __ETHTOOL_DECLARE_LINK_MODE_MASK(support); DECLARE_PHY_INTERFACE_MASK(interfaces); struct phylink_link_state config; phy_interface_t interface; int ret; phylink_dbg(pl, "optical SFP: interfaces=[mac=%*pbl, sfp=%*pbl]\n", (int)PHY_INTERFACE_MODE_MAX, pl->config->supported_interfaces, (int)PHY_INTERFACE_MODE_MAX, pl->sfp_interfaces); /* Find the union of the supported interfaces by the PCS/MAC and * the SFP module. */ phy_interface_and(interfaces, pl->config->supported_interfaces, pl->sfp_interfaces); if (phy_interface_empty(interfaces)) { phylink_err(pl, "unsupported SFP module: no common interface modes\n"); return -EINVAL; } memset(&config, 0, sizeof(config)); linkmode_copy(support, pl->sfp_support); linkmode_copy(config.advertising, pl->sfp_support); config.speed = SPEED_UNKNOWN; config.duplex = DUPLEX_UNKNOWN; config.pause = MLO_PAUSE_AN; /* For all the interfaces that are supported, reduce the sfp_support * mask to only those link modes that can be supported. */ ret = phylink_validate_mask(pl, NULL, pl->sfp_support, &config, interfaces); if (ret) { phylink_err(pl, "unsupported SFP module: validation with support %*pb failed\n", __ETHTOOL_LINK_MODE_MASK_NBITS, support); return ret; } interface = phylink_choose_sfp_interface(pl, interfaces); if (interface == PHY_INTERFACE_MODE_NA) { phylink_err(pl, "failed to select SFP interface\n"); return -EINVAL; } phylink_dbg(pl, "optical SFP: chosen %s interface\n", phy_modes(interface)); config.interface = interface; /* 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: %pe\n", __ETHTOOL_LINK_MODE_MASK_NBITS, support, ERR_PTR(ret)); return ret; } pl->link_port = pl->sfp_port; phylink_sfp_set_config(pl, MLO_AN_INBAND, pl->sfp_support, &config); return 0; } static int phylink_sfp_module_insert(void *upstream, const struct sfp_eeprom_id *id) { struct phylink *pl = upstream; ASSERT_RTNL(); linkmode_zero(pl->sfp_support); phy_interface_zero(pl->sfp_interfaces); sfp_parse_support(pl->sfp_bus, id, pl->sfp_support, pl->sfp_interfaces); pl->sfp_port = sfp_parse_port(pl->sfp_bus, id, pl->sfp_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_optical(pl); } 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_optical(pl); } 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(); phylink_enable_and_run_resolve(pl, PHYLINK_DISABLE_LINK); } /* 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_id_compare(phy->c45_ids.device_ids[1], 0xae025150, 0xfffffff0); } 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; /* Set the PHY's host supported interfaces */ phy_interface_and(phy->host_interfaces, phylink_sfp_interfaces, pl->config->supported_interfaces); /* Do the initial configuration */ ret = phylink_sfp_config_phy(pl, mode, phy); 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 */ static struct { int bit; int speed; } phylink_c73_priority_resolution[] = { { ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT, SPEED_100000 }, { ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT, SPEED_100000 }, /* 100GBASE-KP4 and 100GBASE-CR10 not supported */ { ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT, SPEED_40000 }, { ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT, SPEED_40000 }, { ETHTOOL_LINK_MODE_10000baseKR_Full_BIT, SPEED_10000 }, { ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT, SPEED_10000 }, /* 5GBASE-KR not supported */ { ETHTOOL_LINK_MODE_2500baseX_Full_BIT, SPEED_2500 }, { ETHTOOL_LINK_MODE_1000baseKX_Full_BIT, SPEED_1000 }, }; void phylink_resolve_c73(struct phylink_link_state *state) { int i; for (i = 0; i < ARRAY_SIZE(phylink_c73_priority_resolution); i++) { int bit = phylink_c73_priority_resolution[i].bit; if (linkmode_test_bit(bit, state->advertising) && linkmode_test_bit(bit, state->lp_advertising)) break; } if (i < ARRAY_SIZE(phylink_c73_priority_resolution)) { state->speed = phylink_c73_priority_resolution[i].speed; state->duplex = DUPLEX_FULL; } else { /* negotiation failure */ state->link = false; } phylink_resolve_an_pause(state); } EXPORT_SYMBOL_GPL(phylink_resolve_c73); static void phylink_decode_c37_word(struct phylink_link_state *state, uint16_t config_reg, int speed) { 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; } phylink_resolve_an_pause(state); } 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_decode_usxgmii_word() - decode the USXGMII word from a MAC PCS * @state: a pointer to a struct phylink_link_state. * @lpa: a 16 bit value which stores the USXGMII auto-negotiation word * * Helper for MAC PCS supporting the USXGMII protocol and the auto-negotiation * code word. Decode the USXGMII code word and populate the corresponding fields * (speed, duplex) into the phylink_link_state structure. */ void phylink_decode_usxgmii_word(struct phylink_link_state *state, uint16_t lpa) { switch (lpa & MDIO_USXGMII_SPD_MASK) { case MDIO_USXGMII_10: state->speed = SPEED_10; break; case MDIO_USXGMII_100: state->speed = SPEED_100; break; case MDIO_USXGMII_1000: state->speed = SPEED_1000; break; case MDIO_USXGMII_2500: state->speed = SPEED_2500; break; case MDIO_USXGMII_5000: state->speed = SPEED_5000; break; case MDIO_USXGMII_10G: state->speed = SPEED_10000; break; default: state->link = false; return; } if (lpa & MDIO_USXGMII_FULL_DUPLEX) state->duplex = DUPLEX_FULL; else state->duplex = DUPLEX_HALF; } EXPORT_SYMBOL_GPL(phylink_decode_usxgmii_word); /** * phylink_decode_usgmii_word() - decode the USGMII word from a MAC PCS * @state: a pointer to a struct phylink_link_state. * @lpa: a 16 bit value which stores the USGMII auto-negotiation word * * Helper for MAC PCS supporting the USGMII protocol and the auto-negotiation * code word. Decode the USGMII code word and populate the corresponding fields * (speed, duplex) into the phylink_link_state structure. The structure for this * word is the same as the USXGMII word, except it only supports speeds up to * 1Gbps. */ static void phylink_decode_usgmii_word(struct phylink_link_state *state, uint16_t lpa) { switch (lpa & MDIO_USXGMII_SPD_MASK) { case MDIO_USXGMII_10: state->speed = SPEED_10; break; case MDIO_USXGMII_100: state->speed = SPEED_100; break; case MDIO_USXGMII_1000: state->speed = SPEED_1000; break; default: state->link = false; return; } if (lpa & MDIO_USXGMII_FULL_DUPLEX) state->duplex = DUPLEX_FULL; else state->duplex = DUPLEX_HALF; } /** * phylink_mii_c22_pcs_decode_state() - Decode MAC PCS state from MII registers * @state: a pointer to a &struct phylink_link_state. * @bmsr: The value of the %MII_BMSR register * @lpa: The value of the %MII_LPA register * * Helper for MAC PCS supporting the 802.3 clause 22 register set for * clause 37 negotiation and/or SGMII control. * * Parse the Clause 37 or Cisco SGMII link partner negotiation word into * the phylink @state structure. This is suitable to be used for implementing * the pcs_get_state() member of the struct phylink_pcs_ops structure if * accessing @bmsr and @lpa cannot be done with MDIO directly. */ void phylink_mii_c22_pcs_decode_state(struct phylink_link_state *state, u16 bmsr, u16 lpa) { state->link = !!(bmsr & BMSR_LSTATUS); state->an_complete = !!(bmsr & BMSR_ANEGCOMPLETE); /* If there is no link or autonegotiation is disabled, the LP advertisement * data is not meaningful, so don't go any further. */ if (!state->link || !linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, state->advertising)) 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: case PHY_INTERFACE_MODE_QSGMII: phylink_decode_sgmii_word(state, lpa); break; case PHY_INTERFACE_MODE_QUSGMII: phylink_decode_usgmii_word(state, lpa); break; default: state->link = false; break; } } EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_decode_state); /** * 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 pcs_get_state() member of the struct phylink_pcs_ops * structure. */ void phylink_mii_c22_pcs_get_state(struct mdio_device *pcs, struct phylink_link_state *state) { int bmsr, lpa; bmsr = mdiodev_read(pcs, MII_BMSR); lpa = mdiodev_read(pcs, MII_LPA); if (bmsr < 0 || lpa < 0) { state->link = false; return; } phylink_mii_c22_pcs_decode_state(state, bmsr, lpa); } EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_get_state); /** * phylink_mii_c22_pcs_encode_advertisement() - configure the clause 37 PCS * advertisement * @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. * * Encode the clause 37 PCS advertisement as specified by @interface and * @advertising. * * Return: The new value for @adv, or ``-EINVAL`` if it should not be changed. */ int phylink_mii_c22_pcs_encode_advertisement(phy_interface_t interface, const unsigned long *advertising) { 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; return adv; case PHY_INTERFACE_MODE_SGMII: case PHY_INTERFACE_MODE_QSGMII: return 0x0001; default: /* Nothing to do for other modes */ return -EINVAL; } } EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_encode_advertisement); /** * phylink_mii_c22_pcs_config() - configure clause 22 PCS * @pcs: a pointer to a &struct mdio_device. * @interface: the PHY interface mode being configured * @advertising: the ethtool advertisement mask * @neg_mode: PCS negotiation mode * * Configure a Clause 22 PCS PHY with the appropriate negotiation * parameters for the @mode, @interface and @advertising parameters. * Returns negative error number on failure, zero if the advertisement * has not changed, or positive if there is a change. */ int phylink_mii_c22_pcs_config(struct mdio_device *pcs, phy_interface_t interface, const unsigned long *advertising, unsigned int neg_mode) { bool changed = 0; u16 bmcr; int ret, adv; adv = phylink_mii_c22_pcs_encode_advertisement(interface, advertising); if (adv >= 0) { ret = mdiobus_modify_changed(pcs->bus, pcs->addr, MII_ADVERTISE, 0xffff, adv); if (ret < 0) return ret; changed = ret; } if (neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED) bmcr = BMCR_ANENABLE; else bmcr = 0; /* Configure the inband state. Ensure ISOLATE bit is disabled */ ret = mdiodev_modify(pcs, MII_BMCR, BMCR_ANENABLE | BMCR_ISOLATE, bmcr); if (ret < 0) return ret; return changed; } EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_config); /** * 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 pcs_get_state() member * of the struct phylink_pcs_ops structure. */ void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs) { int val = mdiodev_read(pcs, MII_BMCR); if (val >= 0) { val |= BMCR_ANRESTART; mdiodev_write(pcs, 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); static int __init phylink_init(void) { for (int i = 0; i < ARRAY_SIZE(phylink_sfp_interface_preference); ++i) __set_bit(phylink_sfp_interface_preference[i], phylink_sfp_interfaces); return 0; } module_init(phylink_init); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("phylink models the MAC to optional PHY connection");
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