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d3245b28ef
Refactor PHY, MAC and NIC configuration operations so that the
existing link configuration can be re-pushed with:
efx->phy_op->reconfigure(efx);
efx->mac_op->reconfigure(efx);
and a new configuration with:
efx->nic_op->reconfigure_port(efx);
(plus locking and error-checking).
We have not held the link settings in software (aside from flow
control), and have relied on asking the hardware what they are. This
is a problem because in some cases the hardware may no longer be in a
state to tell us. In particular, if an entire multi-port board is
reset through one port, the driver bindings to other ports have no
chance to save settings before recovering.
We only actually need to keep track of the autonegotiation settings,
so add an ethtool advertising mask to struct efx_nic, initialise it
in PHY init and update it as necessary.
Remove now-unneeded uses of efx_phy_op::{get,set}_settings() and
struct ethtool_cmd.
Much of this was done by Steve Hodgson <shodgson@solarflare.com>.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
/****************************************************************************
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* Driver for Solarflare Solarstorm network controllers and boards
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* Copyright 2006-2008 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 EFX_MDIO_10G_H
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#define EFX_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 efx_mdio_id_rev(u32 id) { return id & 0xf; }
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static inline unsigned efx_mdio_id_model(u32 id) { return (id >> 4) & 0x3f; }
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extern unsigned efx_mdio_id_oui(u32 id);
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static inline int efx_mdio_read(struct efx_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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efx_mdio_write(struct efx_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 efx_mdio_read_id(struct efx_nic *efx, int mmd)
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{
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u16 id_low = efx_mdio_read(efx, mmd, MDIO_DEVID2);
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u16 id_hi = efx_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 efx_mdio_phyxgxs_lane_sync(struct efx_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 = efx_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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EFX_LOG(efx, "XGXS lane status: %x\n", lane_status);
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return sync;
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}
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extern const char *efx_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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extern int efx_mdio_reset_mmd(struct efx_nic *efx, int mmd,
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int spins, int spintime);
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/* As efx_mdio_check_mmd but for multiple MMDs */
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int efx_mdio_check_mmds(struct efx_nic *efx,
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unsigned int mmd_mask, unsigned int fatal_mask);
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/* Check the link status of specified mmds in bit mask */
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extern bool efx_mdio_links_ok(struct efx_nic *efx, unsigned int mmd_mask);
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/* Generic transmit disable support though PMAPMD */
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extern void efx_mdio_transmit_disable(struct efx_nic *efx);
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/* Generic part of reconfigure: set/clear loopback bits */
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extern void efx_mdio_phy_reconfigure(struct efx_nic *efx);
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/* Set the power state of the specified MMDs */
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extern void efx_mdio_set_mmds_lpower(struct efx_nic *efx,
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int low_power, unsigned int mmd_mask);
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/* Set (some of) the PHY settings over MDIO */
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extern int efx_mdio_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd);
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/* Push advertising flags and restart autonegotiation */
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extern void efx_mdio_an_reconfigure(struct efx_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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enum efx_fc_type efx_mdio_get_pause(struct efx_nic *efx);
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/* Wait for specified MMDs to exit reset within a timeout */
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extern int efx_mdio_wait_reset_mmds(struct efx_nic *efx,
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unsigned int mmd_mask);
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/* Set or clear flag, debouncing */
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static inline void
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efx_mdio_set_flag(struct efx_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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#endif /* EFX_MDIO_10G_H */
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