1/****************************************************************************
  2 * Driver for Solarflare network controllers and boards
  3 * Copyright 2006-2011 Solarflare Communications Inc.
  4 *
  5 * This program is free software; you can redistribute it and/or modify it
  6 * under the terms of the GNU General Public License version 2 as published
  7 * by the Free Software Foundation, incorporated herein by reference.
  8 */
  9
 10#ifndef EFX_MDIO_10G_H
 11#define EFX_MDIO_10G_H
 12
 13#include <linux/mdio.h>
 14
 15/*
 16 * Helper functions for doing 10G MDIO as specified in IEEE 802.3 clause 45.
 17 */
 18
 19#include "efx.h"
 20
 21static inline unsigned efx_mdio_id_rev(u32 id) { return id & 0xf; }
 22static inline unsigned efx_mdio_id_model(u32 id) { return (id >> 4) & 0x3f; }
 23unsigned efx_mdio_id_oui(u32 id);
 24
 25static inline int efx_mdio_read(struct efx_nic *efx, int devad, int addr)
 26{
 27	return efx->mdio.mdio_read(efx->net_dev, efx->mdio.prtad, devad, addr);
 28}
 29
 30static inline void
 31efx_mdio_write(struct efx_nic *efx, int devad, int addr, int value)
 32{
 33	efx->mdio.mdio_write(efx->net_dev, efx->mdio.prtad, devad, addr, value);
 34}
 35
 36static inline u32 efx_mdio_read_id(struct efx_nic *efx, int mmd)
 37{
 38	u16 id_low = efx_mdio_read(efx, mmd, MDIO_DEVID2);
 39	u16 id_hi = efx_mdio_read(efx, mmd, MDIO_DEVID1);
 40	return (id_hi << 16) | (id_low);
 41}
 42
 43static inline bool efx_mdio_phyxgxs_lane_sync(struct efx_nic *efx)
 44{
 45	int i, lane_status;
 46	bool sync;
 47
 48	for (i = 0; i < 2; ++i)
 49		lane_status = efx_mdio_read(efx, MDIO_MMD_PHYXS,
 50					    MDIO_PHYXS_LNSTAT);
 51
 52	sync = !!(lane_status & MDIO_PHYXS_LNSTAT_ALIGN);
 53	if (!sync)
 54		netif_dbg(efx, hw, efx->net_dev, "XGXS lane status: %x\n",
 55			  lane_status);
 56	return sync;
 57}
 58
 59const char *efx_mdio_mmd_name(int mmd);
 60
 61/*
 62 * Reset a specific MMD and wait for reset to clear.
 63 * Return number of spins left (>0) on success, -%ETIMEDOUT on failure.
 64 *
 65 * This function will sleep
 66 */
 67int efx_mdio_reset_mmd(struct efx_nic *efx, int mmd, int spins, int spintime);
 68
 69/* As efx_mdio_check_mmd but for multiple MMDs */
 70int efx_mdio_check_mmds(struct efx_nic *efx, unsigned int mmd_mask);
 71
 72/* Check the link status of specified mmds in bit mask */
 73bool efx_mdio_links_ok(struct efx_nic *efx, unsigned int mmd_mask);
 74
 75/* Generic transmit disable support though PMAPMD */
 76void efx_mdio_transmit_disable(struct efx_nic *efx);
 77
 78/* Generic part of reconfigure: set/clear loopback bits */
 79void efx_mdio_phy_reconfigure(struct efx_nic *efx);
 80
 81/* Set the power state of the specified MMDs */
 82void efx_mdio_set_mmds_lpower(struct efx_nic *efx, int low_power,
 83			      unsigned int mmd_mask);
 84
 85/* Set (some of) the PHY settings over MDIO */
 86int efx_mdio_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd);
 87
 88/* Push advertising flags and restart autonegotiation */
 89void efx_mdio_an_reconfigure(struct efx_nic *efx);
 90
 91/* Get pause parameters from AN if available (otherwise return
 92 * requested pause parameters)
 93 */
 94u8 efx_mdio_get_pause(struct efx_nic *efx);
 95
 96/* Wait for specified MMDs to exit reset within a timeout */
 97int efx_mdio_wait_reset_mmds(struct efx_nic *efx, unsigned int mmd_mask);
 98
 99/* Set or clear flag, debouncing */
100static inline void
101efx_mdio_set_flag(struct efx_nic *efx, int devad, int addr,
102		  int mask, bool state)
103{
104	mdio_set_flag(&efx->mdio, efx->mdio.prtad, devad, addr, mask, state);
105}
106
107/* Liveness self-test for MDIO PHYs */
108int efx_mdio_test_alive(struct efx_nic *efx);
109
110#endif /* EFX_MDIO_10G_H */