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 EF4_MDIO_10G_H 11 #define EF4_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 21 static inline unsigned ef4_mdio_id_rev(u32 id) { return id & 0xf; } 22 static inline unsigned ef4_mdio_id_model(u32 id) { return (id >> 4) & 0x3f; } 23 unsigned ef4_mdio_id_oui(u32 id); 24 25 static inline int ef4_mdio_read(struct ef4_nic *efx, int devad, int addr) 26 { 27 return efx->mdio.mdio_read(efx->net_dev, efx->mdio.prtad, devad, addr); 28 } 29 30 static inline void 31 ef4_mdio_write(struct ef4_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 36 static inline u32 ef4_mdio_read_id(struct ef4_nic *efx, int mmd) 37 { 38 u16 id_low = ef4_mdio_read(efx, mmd, MDIO_DEVID2); 39 u16 id_hi = ef4_mdio_read(efx, mmd, MDIO_DEVID1); 40 return (id_hi << 16) | (id_low); 41 } 42 43 static inline bool ef4_mdio_phyxgxs_lane_sync(struct ef4_nic *efx) 44 { 45 int i, lane_status; 46 bool sync; 47 48 for (i = 0; i < 2; ++i) 49 lane_status = ef4_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 59 const char *ef4_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 */ 67 int ef4_mdio_reset_mmd(struct ef4_nic *efx, int mmd, int spins, int spintime); 68 69 /* As ef4_mdio_check_mmd but for multiple MMDs */ 70 int ef4_mdio_check_mmds(struct ef4_nic *efx, unsigned int mmd_mask); 71 72 /* Check the link status of specified mmds in bit mask */ 73 bool ef4_mdio_links_ok(struct ef4_nic *efx, unsigned int mmd_mask); 74 75 /* Generic transmit disable support though PMAPMD */ 76 void ef4_mdio_transmit_disable(struct ef4_nic *efx); 77 78 /* Generic part of reconfigure: set/clear loopback bits */ 79 void ef4_mdio_phy_reconfigure(struct ef4_nic *efx); 80 81 /* Set the power state of the specified MMDs */ 82 void ef4_mdio_set_mmds_lpower(struct ef4_nic *efx, int low_power, 83 unsigned int mmd_mask); 84 85 /* Set (some of) the PHY settings over MDIO */ 86 int ef4_mdio_set_link_ksettings(struct ef4_nic *efx, 87 const struct ethtool_link_ksettings *cmd); 88 89 /* Push advertising flags and restart autonegotiation */ 90 void ef4_mdio_an_reconfigure(struct ef4_nic *efx); 91 92 /* Get pause parameters from AN if available (otherwise return 93 * requested pause parameters) 94 */ 95 u8 ef4_mdio_get_pause(struct ef4_nic *efx); 96 97 /* Wait for specified MMDs to exit reset within a timeout */ 98 int ef4_mdio_wait_reset_mmds(struct ef4_nic *efx, unsigned int mmd_mask); 99 100 /* Set or clear flag, debouncing */ 101 static inline void 102 ef4_mdio_set_flag(struct ef4_nic *efx, int devad, int addr, 103 int mask, bool state) 104 { 105 mdio_set_flag(&efx->mdio, efx->mdio.prtad, devad, addr, mask, state); 106 } 107 108 /* Liveness self-test for MDIO PHYs */ 109 int ef4_mdio_test_alive(struct ef4_nic *efx); 110 111 #endif /* EF4_MDIO_10G_H */ 112