tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2006-2008 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#include "boards.h"
21
22static inline unsigned efx_mdio_id_rev(u32 id) { return id & 0xf; }
23static inline unsigned efx_mdio_id_model(u32 id) { return (id >> 4) & 0x3f; }
24extern unsigned efx_mdio_id_oui(u32 id);
25
26static inline int efx_mdio_read(struct efx_nic *efx, int devad, int addr)
27{
28 return efx->mdio.mdio_read(efx->net_dev, efx->mdio.prtad, devad, addr);
29}
30
31static inline void
32efx_mdio_write(struct efx_nic *efx, int devad, int addr, int value)
33{
34 efx->mdio.mdio_write(efx->net_dev, efx->mdio.prtad, devad, addr, value);
35}
36
37static inline u32 efx_mdio_read_id(struct efx_nic *efx, int mmd)
38{
39 u16 id_low = efx_mdio_read(efx, mmd, MDIO_DEVID2);
40 u16 id_hi = efx_mdio_read(efx, mmd, MDIO_DEVID1);
41 return (id_hi << 16) | (id_low);
42}
43
44static inline bool efx_mdio_phyxgxs_lane_sync(struct efx_nic *efx)
45{
46 int i, lane_status;
47 bool sync;
48
49 for (i = 0; i < 2; ++i)
50 lane_status = efx_mdio_read(efx, MDIO_MMD_PHYXS,
51 MDIO_PHYXS_LNSTAT);
52
53 sync = !!(lane_status & MDIO_PHYXS_LNSTAT_ALIGN);
54 if (!sync)
55 EFX_LOG(efx, "XGXS lane status: %x\n", 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/* Get pause parameters from AN if available (otherwise return
91 * requested pause parameters)
92 */
93enum efx_fc_type efx_mdio_get_pause(struct efx_nic *efx);
94
95/* Wait for specified MMDs to exit reset within a timeout */
96extern int efx_mdio_wait_reset_mmds(struct efx_nic *efx,
97 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#endif /* EFX_MDIO_10G_H */