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265 lines
8.1 KiB
265 lines
8.1 KiB
/* |
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* linux/mdio.h: definitions for MDIO (clause 45) transceivers |
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* Copyright 2006-2009 Solarflare Communications Inc. |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 as published |
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* by the Free Software Foundation, incorporated herein by reference. |
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*/ |
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#ifndef __LINUX_MDIO_H__ |
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#define __LINUX_MDIO_H__ |
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#include <uapi/linux/mdio.h> |
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struct mii_bus; |
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/* Multiple levels of nesting are possible. However typically this is |
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* limited to nested DSA like layer, a MUX layer, and the normal |
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* user. Instead of trying to handle the general case, just define |
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* these cases. |
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*/ |
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enum mdio_mutex_lock_class { |
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MDIO_MUTEX_NORMAL, |
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MDIO_MUTEX_MUX, |
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MDIO_MUTEX_NESTED, |
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}; |
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struct mdio_device { |
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struct device dev; |
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const struct dev_pm_ops *pm_ops; |
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struct mii_bus *bus; |
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int (*bus_match)(struct device *dev, struct device_driver *drv); |
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void (*device_free)(struct mdio_device *mdiodev); |
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void (*device_remove)(struct mdio_device *mdiodev); |
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/* Bus address of the MDIO device (0-31) */ |
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int addr; |
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int flags; |
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}; |
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#define to_mdio_device(d) container_of(d, struct mdio_device, dev) |
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/* struct mdio_driver_common: Common to all MDIO drivers */ |
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struct mdio_driver_common { |
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struct device_driver driver; |
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int flags; |
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}; |
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#define MDIO_DEVICE_FLAG_PHY 1 |
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#define to_mdio_common_driver(d) \ |
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container_of(d, struct mdio_driver_common, driver) |
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/* struct mdio_driver: Generic MDIO driver */ |
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struct mdio_driver { |
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struct mdio_driver_common mdiodrv; |
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/* |
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* Called during discovery. Used to set |
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* up device-specific structures, if any |
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*/ |
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int (*probe)(struct mdio_device *mdiodev); |
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/* Clears up any memory if needed */ |
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void (*remove)(struct mdio_device *mdiodev); |
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}; |
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#define to_mdio_driver(d) \ |
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container_of(to_mdio_common_driver(d), struct mdio_driver, mdiodrv) |
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void mdio_device_free(struct mdio_device *mdiodev); |
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struct mdio_device *mdio_device_create(struct mii_bus *bus, int addr); |
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int mdio_device_register(struct mdio_device *mdiodev); |
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void mdio_device_remove(struct mdio_device *mdiodev); |
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int mdio_driver_register(struct mdio_driver *drv); |
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void mdio_driver_unregister(struct mdio_driver *drv); |
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static inline bool mdio_phy_id_is_c45(int phy_id) |
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{ |
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return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK); |
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} |
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static inline __u16 mdio_phy_id_prtad(int phy_id) |
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{ |
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return (phy_id & MDIO_PHY_ID_PRTAD) >> 5; |
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} |
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static inline __u16 mdio_phy_id_devad(int phy_id) |
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{ |
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return phy_id & MDIO_PHY_ID_DEVAD; |
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} |
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/** |
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* struct mdio_if_info - Ethernet controller MDIO interface |
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* @prtad: PRTAD of the PHY (%MDIO_PRTAD_NONE if not present/unknown) |
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* @mmds: Mask of MMDs expected to be present in the PHY. This must be |
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* non-zero unless @prtad = %MDIO_PRTAD_NONE. |
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* @mode_support: MDIO modes supported. If %MDIO_SUPPORTS_C22 is set then |
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* MII register access will be passed through with @devad = |
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* %MDIO_DEVAD_NONE. If %MDIO_EMULATE_C22 is set then access to |
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* commonly used clause 22 registers will be translated into |
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* clause 45 registers. |
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* @dev: Net device structure |
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* @mdio_read: Register read function; returns value or negative error code |
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* @mdio_write: Register write function; returns 0 or negative error code |
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*/ |
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struct mdio_if_info { |
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int prtad; |
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u32 mmds; |
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unsigned mode_support; |
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struct net_device *dev; |
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int (*mdio_read)(struct net_device *dev, int prtad, int devad, |
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u16 addr); |
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int (*mdio_write)(struct net_device *dev, int prtad, int devad, |
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u16 addr, u16 val); |
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}; |
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#define MDIO_PRTAD_NONE (-1) |
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#define MDIO_DEVAD_NONE (-1) |
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#define MDIO_SUPPORTS_C22 1 |
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#define MDIO_SUPPORTS_C45 2 |
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#define MDIO_EMULATE_C22 4 |
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struct ethtool_cmd; |
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struct ethtool_pauseparam; |
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extern int mdio45_probe(struct mdio_if_info *mdio, int prtad); |
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extern int mdio_set_flag(const struct mdio_if_info *mdio, |
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int prtad, int devad, u16 addr, int mask, |
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bool sense); |
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extern int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmds); |
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extern int mdio45_nway_restart(const struct mdio_if_info *mdio); |
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extern void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio, |
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struct ethtool_cmd *ecmd, |
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u32 npage_adv, u32 npage_lpa); |
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/** |
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* mdio45_ethtool_gset - get settings for ETHTOOL_GSET |
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* @mdio: MDIO interface |
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* @ecmd: Ethtool request structure |
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* |
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* Since the CSRs for auto-negotiation using next pages are not fully |
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* standardised, this function does not attempt to decode them. Use |
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* mdio45_ethtool_gset_npage() to specify advertisement bits from next |
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* pages. |
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*/ |
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static inline void mdio45_ethtool_gset(const struct mdio_if_info *mdio, |
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struct ethtool_cmd *ecmd) |
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{ |
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mdio45_ethtool_gset_npage(mdio, ecmd, 0, 0); |
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} |
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extern int mdio_mii_ioctl(const struct mdio_if_info *mdio, |
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struct mii_ioctl_data *mii_data, int cmd); |
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/** |
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* mmd_eee_cap_to_ethtool_sup_t |
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* @eee_cap: value of the MMD EEE Capability register |
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* |
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* A small helper function that translates MMD EEE Capability (3.20) bits |
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* to ethtool supported settings. |
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*/ |
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static inline u32 mmd_eee_cap_to_ethtool_sup_t(u16 eee_cap) |
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{ |
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u32 supported = 0; |
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if (eee_cap & MDIO_EEE_100TX) |
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supported |= SUPPORTED_100baseT_Full; |
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if (eee_cap & MDIO_EEE_1000T) |
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supported |= SUPPORTED_1000baseT_Full; |
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if (eee_cap & MDIO_EEE_10GT) |
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supported |= SUPPORTED_10000baseT_Full; |
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if (eee_cap & MDIO_EEE_1000KX) |
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supported |= SUPPORTED_1000baseKX_Full; |
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if (eee_cap & MDIO_EEE_10GKX4) |
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supported |= SUPPORTED_10000baseKX4_Full; |
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if (eee_cap & MDIO_EEE_10GKR) |
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supported |= SUPPORTED_10000baseKR_Full; |
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return supported; |
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} |
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/** |
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* mmd_eee_adv_to_ethtool_adv_t |
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* @eee_adv: value of the MMD EEE Advertisement/Link Partner Ability registers |
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* |
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* A small helper function that translates the MMD EEE Advertisment (7.60) |
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* and MMD EEE Link Partner Ability (7.61) bits to ethtool advertisement |
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* settings. |
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*/ |
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static inline u32 mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv) |
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{ |
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u32 adv = 0; |
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if (eee_adv & MDIO_EEE_100TX) |
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adv |= ADVERTISED_100baseT_Full; |
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if (eee_adv & MDIO_EEE_1000T) |
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adv |= ADVERTISED_1000baseT_Full; |
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if (eee_adv & MDIO_EEE_10GT) |
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adv |= ADVERTISED_10000baseT_Full; |
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if (eee_adv & MDIO_EEE_1000KX) |
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adv |= ADVERTISED_1000baseKX_Full; |
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if (eee_adv & MDIO_EEE_10GKX4) |
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adv |= ADVERTISED_10000baseKX4_Full; |
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if (eee_adv & MDIO_EEE_10GKR) |
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adv |= ADVERTISED_10000baseKR_Full; |
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return adv; |
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} |
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/** |
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* ethtool_adv_to_mmd_eee_adv_t |
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* @adv: the ethtool advertisement settings |
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* |
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* A small helper function that translates ethtool advertisement settings |
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* to EEE advertisements for the MMD EEE Advertisement (7.60) and |
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* MMD EEE Link Partner Ability (7.61) registers. |
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*/ |
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static inline u16 ethtool_adv_to_mmd_eee_adv_t(u32 adv) |
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{ |
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u16 reg = 0; |
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if (adv & ADVERTISED_100baseT_Full) |
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reg |= MDIO_EEE_100TX; |
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if (adv & ADVERTISED_1000baseT_Full) |
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reg |= MDIO_EEE_1000T; |
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if (adv & ADVERTISED_10000baseT_Full) |
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reg |= MDIO_EEE_10GT; |
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if (adv & ADVERTISED_1000baseKX_Full) |
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reg |= MDIO_EEE_1000KX; |
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if (adv & ADVERTISED_10000baseKX4_Full) |
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reg |= MDIO_EEE_10GKX4; |
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if (adv & ADVERTISED_10000baseKR_Full) |
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reg |= MDIO_EEE_10GKR; |
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return reg; |
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} |
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int mdiobus_read(struct mii_bus *bus, int addr, u32 regnum); |
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int mdiobus_read_nested(struct mii_bus *bus, int addr, u32 regnum); |
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int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val); |
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int mdiobus_write_nested(struct mii_bus *bus, int addr, u32 regnum, u16 val); |
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int mdiobus_register_device(struct mdio_device *mdiodev); |
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int mdiobus_unregister_device(struct mdio_device *mdiodev); |
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bool mdiobus_is_registered_device(struct mii_bus *bus, int addr); |
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struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr); |
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/** |
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* module_mdio_driver() - Helper macro for registering mdio drivers |
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* |
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* Helper macro for MDIO drivers which do not do anything special in module |
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* init/exit. Each module may only use this macro once, and calling it |
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* replaces module_init() and module_exit(). |
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*/ |
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#define mdio_module_driver(_mdio_driver) \ |
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static int __init mdio_module_init(void) \ |
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{ \ |
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return mdio_driver_register(&_mdio_driver); \ |
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} \ |
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module_init(mdio_module_init); \ |
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static void __exit mdio_module_exit(void) \ |
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{ \ |
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mdio_driver_unregister(&_mdio_driver); \ |
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} \ |
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module_exit(mdio_module_exit) |
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#endif /* __LINUX_MDIO_H__ */
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