diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/mdio_10g.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/mdio_10g.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/mdio_10g.h b/drivers/net/ethernet/sfc/mdio_10g.h new file mode 100644 index 000000000000..a97dbbd2de99 --- /dev/null +++ b/drivers/net/ethernet/sfc/mdio_10g.h @@ -0,0 +1,112 @@ +/**************************************************************************** + * Driver for Solarflare Solarstorm network controllers and boards + * Copyright 2006-2011 Solarflare Communications Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation, incorporated herein by reference. + */ + +#ifndef EFX_MDIO_10G_H +#define EFX_MDIO_10G_H + +#include <linux/mdio.h> + +/* + * Helper functions for doing 10G MDIO as specified in IEEE 802.3 clause 45. + */ + +#include "efx.h" + +static inline unsigned efx_mdio_id_rev(u32 id) { return id & 0xf; } +static inline unsigned efx_mdio_id_model(u32 id) { return (id >> 4) & 0x3f; } +extern unsigned efx_mdio_id_oui(u32 id); + +static inline int efx_mdio_read(struct efx_nic *efx, int devad, int addr) +{ + return efx->mdio.mdio_read(efx->net_dev, efx->mdio.prtad, devad, addr); +} + +static inline void +efx_mdio_write(struct efx_nic *efx, int devad, int addr, int value) +{ + efx->mdio.mdio_write(efx->net_dev, efx->mdio.prtad, devad, addr, value); +} + +static inline u32 efx_mdio_read_id(struct efx_nic *efx, int mmd) +{ + u16 id_low = efx_mdio_read(efx, mmd, MDIO_DEVID2); + u16 id_hi = efx_mdio_read(efx, mmd, MDIO_DEVID1); + return (id_hi << 16) | (id_low); +} + +static inline bool efx_mdio_phyxgxs_lane_sync(struct efx_nic *efx) +{ + int i, lane_status; + bool sync; + + for (i = 0; i < 2; ++i) + lane_status = efx_mdio_read(efx, MDIO_MMD_PHYXS, + MDIO_PHYXS_LNSTAT); + + sync = !!(lane_status & MDIO_PHYXS_LNSTAT_ALIGN); + if (!sync) + netif_dbg(efx, hw, efx->net_dev, "XGXS lane status: %x\n", + lane_status); + return sync; +} + +extern const char *efx_mdio_mmd_name(int mmd); + +/* + * Reset a specific MMD and wait for reset to clear. + * Return number of spins left (>0) on success, -%ETIMEDOUT on failure. + * + * This function will sleep + */ +extern int efx_mdio_reset_mmd(struct efx_nic *efx, int mmd, + int spins, int spintime); + +/* As efx_mdio_check_mmd but for multiple MMDs */ +int efx_mdio_check_mmds(struct efx_nic *efx, unsigned int mmd_mask); + +/* Check the link status of specified mmds in bit mask */ +extern bool efx_mdio_links_ok(struct efx_nic *efx, unsigned int mmd_mask); + +/* Generic transmit disable support though PMAPMD */ +extern void efx_mdio_transmit_disable(struct efx_nic *efx); + +/* Generic part of reconfigure: set/clear loopback bits */ +extern void efx_mdio_phy_reconfigure(struct efx_nic *efx); + +/* Set the power state of the specified MMDs */ +extern void efx_mdio_set_mmds_lpower(struct efx_nic *efx, + int low_power, unsigned int mmd_mask); + +/* Set (some of) the PHY settings over MDIO */ +extern int efx_mdio_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd); + +/* Push advertising flags and restart autonegotiation */ +extern void efx_mdio_an_reconfigure(struct efx_nic *efx); + +/* Get pause parameters from AN if available (otherwise return + * requested pause parameters) + */ +u8 efx_mdio_get_pause(struct efx_nic *efx); + +/* Wait for specified MMDs to exit reset within a timeout */ +extern int efx_mdio_wait_reset_mmds(struct efx_nic *efx, + unsigned int mmd_mask); + +/* Set or clear flag, debouncing */ +static inline void +efx_mdio_set_flag(struct efx_nic *efx, int devad, int addr, + int mask, bool state) +{ + mdio_set_flag(&efx->mdio, efx->mdio.prtad, devad, addr, mask, state); +} + +/* Liveness self-test for MDIO PHYs */ +extern int efx_mdio_test_alive(struct efx_nic *efx); + +#endif /* EFX_MDIO_10G_H */ |