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 */
111