112 lines
3.4 KiB
C
112 lines
3.4 KiB
C
/****************************************************************************
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* Driver for Solarflare network controllers and boards
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* Copyright 2006-2011 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 EF4_MDIO_10G_H
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#define EF4_MDIO_10G_H
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#include <linux/mdio.h>
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/*
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* Helper functions for doing 10G MDIO as specified in IEEE 802.3 clause 45.
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*/
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#include "efx.h"
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static inline unsigned ef4_mdio_id_rev(u32 id) { return id & 0xf; }
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static inline unsigned ef4_mdio_id_model(u32 id) { return (id >> 4) & 0x3f; }
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unsigned ef4_mdio_id_oui(u32 id);
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static inline int ef4_mdio_read(struct ef4_nic *efx, int devad, int addr)
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{
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return efx->mdio.mdio_read(efx->net_dev, efx->mdio.prtad, devad, addr);
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}
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static inline void
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ef4_mdio_write(struct ef4_nic *efx, int devad, int addr, int value)
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{
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efx->mdio.mdio_write(efx->net_dev, efx->mdio.prtad, devad, addr, value);
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}
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static inline u32 ef4_mdio_read_id(struct ef4_nic *efx, int mmd)
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{
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u16 id_low = ef4_mdio_read(efx, mmd, MDIO_DEVID2);
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u16 id_hi = ef4_mdio_read(efx, mmd, MDIO_DEVID1);
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return (id_hi << 16) | (id_low);
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}
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static inline bool ef4_mdio_phyxgxs_lane_sync(struct ef4_nic *efx)
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{
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int i, lane_status;
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bool sync;
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for (i = 0; i < 2; ++i)
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lane_status = ef4_mdio_read(efx, MDIO_MMD_PHYXS,
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MDIO_PHYXS_LNSTAT);
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sync = !!(lane_status & MDIO_PHYXS_LNSTAT_ALIGN);
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if (!sync)
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netif_dbg(efx, hw, efx->net_dev, "XGXS lane status: %x\n",
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lane_status);
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return sync;
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}
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const char *ef4_mdio_mmd_name(int mmd);
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/*
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* Reset a specific MMD and wait for reset to clear.
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* Return number of spins left (>0) on success, -%ETIMEDOUT on failure.
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*
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* This function will sleep
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*/
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int ef4_mdio_reset_mmd(struct ef4_nic *efx, int mmd, int spins, int spintime);
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/* As ef4_mdio_check_mmd but for multiple MMDs */
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int ef4_mdio_check_mmds(struct ef4_nic *efx, unsigned int mmd_mask);
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/* Check the link status of specified mmds in bit mask */
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bool ef4_mdio_links_ok(struct ef4_nic *efx, unsigned int mmd_mask);
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/* Generic transmit disable support though PMAPMD */
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void ef4_mdio_transmit_disable(struct ef4_nic *efx);
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/* Generic part of reconfigure: set/clear loopback bits */
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void ef4_mdio_phy_reconfigure(struct ef4_nic *efx);
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/* Set the power state of the specified MMDs */
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void ef4_mdio_set_mmds_lpower(struct ef4_nic *efx, int low_power,
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unsigned int mmd_mask);
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/* Set (some of) the PHY settings over MDIO */
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int ef4_mdio_set_link_ksettings(struct ef4_nic *efx,
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const struct ethtool_link_ksettings *cmd);
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/* Push advertising flags and restart autonegotiation */
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void ef4_mdio_an_reconfigure(struct ef4_nic *efx);
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/* Get pause parameters from AN if available (otherwise return
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* requested pause parameters)
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*/
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u8 ef4_mdio_get_pause(struct ef4_nic *efx);
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/* Wait for specified MMDs to exit reset within a timeout */
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int ef4_mdio_wait_reset_mmds(struct ef4_nic *efx, unsigned int mmd_mask);
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/* Set or clear flag, debouncing */
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static inline void
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ef4_mdio_set_flag(struct ef4_nic *efx, int devad, int addr,
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int mask, bool state)
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{
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mdio_set_flag(&efx->mdio, efx->mdio.prtad, devad, addr, mask, state);
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}
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/* Liveness self-test for MDIO PHYs */
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int ef4_mdio_test_alive(struct ef4_nic *efx);
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#endif /* EF4_MDIO_10G_H */
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