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1/* SPDX-License-Identifier: GPL-2.0-only */2/****************************************************************************3 * Driver for Solarflare network controllers and boards4 * Copyright 2006-2011 Solarflare Communications Inc.5 */6 7#ifndef EF4_MDIO_10G_H8#define EF4_MDIO_10G_H9 10#include <linux/mdio.h>11 12/*13 * Helper functions for doing 10G MDIO as specified in IEEE 802.3 clause 45.14 */15 16#include "efx.h"17 18static inline unsigned ef4_mdio_id_rev(u32 id) { return id & 0xf; }19static inline unsigned ef4_mdio_id_model(u32 id) { return (id >> 4) & 0x3f; }20unsigned ef4_mdio_id_oui(u32 id);21 22static inline int ef4_mdio_read(struct ef4_nic *efx, int devad, int addr)23{24 return efx->mdio.mdio_read(efx->net_dev, efx->mdio.prtad, devad, addr);25}26 27static inline void28ef4_mdio_write(struct ef4_nic *efx, int devad, int addr, int value)29{30 efx->mdio.mdio_write(efx->net_dev, efx->mdio.prtad, devad, addr, value);31}32 33static inline u32 ef4_mdio_read_id(struct ef4_nic *efx, int mmd)34{35 u16 id_low = ef4_mdio_read(efx, mmd, MDIO_DEVID2);36 u16 id_hi = ef4_mdio_read(efx, mmd, MDIO_DEVID1);37 return (id_hi << 16) | (id_low);38}39 40static inline bool ef4_mdio_phyxgxs_lane_sync(struct ef4_nic *efx)41{42 int i, lane_status;43 bool sync;44 45 for (i = 0; i < 2; ++i)46 lane_status = ef4_mdio_read(efx, MDIO_MMD_PHYXS,47 MDIO_PHYXS_LNSTAT);48 49 sync = !!(lane_status & MDIO_PHYXS_LNSTAT_ALIGN);50 if (!sync)51 netif_dbg(efx, hw, efx->net_dev, "XGXS lane status: %x\n",52 lane_status);53 return sync;54}55 56const char *ef4_mdio_mmd_name(int mmd);57 58/*59 * Reset a specific MMD and wait for reset to clear.60 * Return number of spins left (>0) on success, -%ETIMEDOUT on failure.61 *62 * This function will sleep63 */64int ef4_mdio_reset_mmd(struct ef4_nic *efx, int mmd, int spins, int spintime);65 66/* As ef4_mdio_check_mmd but for multiple MMDs */67int ef4_mdio_check_mmds(struct ef4_nic *efx, unsigned int mmd_mask);68 69/* Check the link status of specified mmds in bit mask */70bool ef4_mdio_links_ok(struct ef4_nic *efx, unsigned int mmd_mask);71 72/* Generic transmit disable support though PMAPMD */73void ef4_mdio_transmit_disable(struct ef4_nic *efx);74 75/* Generic part of reconfigure: set/clear loopback bits */76void ef4_mdio_phy_reconfigure(struct ef4_nic *efx);77 78/* Set the power state of the specified MMDs */79void ef4_mdio_set_mmds_lpower(struct ef4_nic *efx, int low_power,80 unsigned int mmd_mask);81 82/* Set (some of) the PHY settings over MDIO */83int ef4_mdio_set_link_ksettings(struct ef4_nic *efx,84 const struct ethtool_link_ksettings *cmd);85 86/* Push advertising flags and restart autonegotiation */87void ef4_mdio_an_reconfigure(struct ef4_nic *efx);88 89/* Get pause parameters from AN if available (otherwise return90 * requested pause parameters)91 */92u8 ef4_mdio_get_pause(struct ef4_nic *efx);93 94/* Wait for specified MMDs to exit reset within a timeout */95int ef4_mdio_wait_reset_mmds(struct ef4_nic *efx, unsigned int mmd_mask);96 97/* Set or clear flag, debouncing */98static inline void99ef4_mdio_set_flag(struct ef4_nic *efx, int devad, int addr,100 int mask, bool state)101{102 mdio_set_flag(&efx->mdio, efx->mdio.prtad, devad, addr, mask, state);103}104 105/* Liveness self-test for MDIO PHYs */106int ef4_mdio_test_alive(struct ef4_nic *efx);107 108#endif /* EF4_MDIO_10G_H */109