1/**************************************************************************** 2 * Driver for Solarflare Solarstorm network controllers and boards 3 * Copyright 2006-2009 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; } 23extern unsigned 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 59extern const 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 */ 67extern int efx_mdio_reset_mmd(struct efx_nic *efx, int mmd, 68 int spins, int spintime); 69 70/* As efx_mdio_check_mmd but for multiple MMDs */ 71int efx_mdio_check_mmds(struct efx_nic *efx, 72 unsigned int mmd_mask, unsigned int fatal_mask); 73 74/* Check the link status of specified mmds in bit mask */ 75extern bool efx_mdio_links_ok(struct efx_nic *efx, unsigned int mmd_mask); 76 77/* Generic transmit disable support though PMAPMD */ 78extern void efx_mdio_transmit_disable(struct efx_nic *efx); 79 80/* Generic part of reconfigure: set/clear loopback bits */ 81extern void efx_mdio_phy_reconfigure(struct efx_nic *efx); 82 83/* Set the power state of the specified MMDs */ 84extern void efx_mdio_set_mmds_lpower(struct efx_nic *efx, 85 int low_power, unsigned int mmd_mask); 86 87/* Set (some of) the PHY settings over MDIO */ 88extern int efx_mdio_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd); 89 90/* Push advertising flags and restart autonegotiation */ 91extern void efx_mdio_an_reconfigure(struct efx_nic *efx); 92 93/* Get pause parameters from AN if available (otherwise return 94 * requested pause parameters) 95 */ 96enum efx_fc_type efx_mdio_get_pause(struct efx_nic *efx); 97 98/* Wait for specified MMDs to exit reset within a timeout */ 99extern int efx_mdio_wait_reset_mmds(struct efx_nic *efx, 100 unsigned int mmd_mask); 101 102/* Set or clear flag, debouncing */ 103static inline void 104efx_mdio_set_flag(struct efx_nic *efx, int devad, int addr, 105 int mask, bool state) 106{ 107 mdio_set_flag(&efx->mdio, efx->mdio.prtad, devad, addr, mask, state); 108} 109 110/* Liveness self-test for MDIO PHYs */ 111extern int efx_mdio_test_alive(struct efx_nic *efx); 112 113#endif /* EFX_MDIO_10G_H */ 114