1/*	$NetBSD: ukphy_subr.c,v 1.2 1998/11/05 04:08:02 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center, and by Frank van der Linden.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD$");
35
36/*
37 * Subroutines shared by the ukphy driver and other PHY drivers.
38 */
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/socket.h>
43#include <sys/module.h>
44#include <sys/bus.h>
45
46#include <net/if.h>
47#include <net/if_media.h>
48
49#include <dev/mii/mii.h>
50#include <dev/mii/miivar.h>
51
52#include "miibus_if.h"
53
54/*
55 * Media status subroutine.  If a PHY driver does media detection simply
56 * by decoding the NWay autonegotiation, use this routine.
57 */
58void
59ukphy_status(struct mii_softc *phy)
60{
61	struct mii_data *mii = phy->mii_pdata;
62	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
63	int bmsr, bmcr, anlpar, gtcr, gtsr;
64
65	mii->mii_media_status = IFM_AVALID;
66	mii->mii_media_active = IFM_ETHER;
67
68	bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
69	if (bmsr & BMSR_LINK)
70		mii->mii_media_status |= IFM_ACTIVE;
71
72	bmcr = PHY_READ(phy, MII_BMCR);
73	if (bmcr & BMCR_ISO) {
74		mii->mii_media_active |= IFM_NONE;
75		mii->mii_media_status = 0;
76		return;
77	}
78
79	if (bmcr & BMCR_LOOP)
80		mii->mii_media_active |= IFM_LOOP;
81
82	if (bmcr & BMCR_AUTOEN) {
83		/*
84		 * NWay autonegotiation takes the highest-order common
85		 * bit of the ANAR and ANLPAR (i.e. best media advertised
86		 * both by us and our link partner).
87		 */
88		if ((bmsr & BMSR_ACOMP) == 0) {
89			/* Erg, still trying, I guess... */
90			mii->mii_media_active |= IFM_NONE;
91			return;
92		}
93
94		anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
95		if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 &&
96		    (phy->mii_extcapabilities &
97		    (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0) {
98			gtcr = PHY_READ(phy, MII_100T2CR);
99			gtsr = PHY_READ(phy, MII_100T2SR);
100		} else
101			gtcr = gtsr = 0;
102
103		if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX))
104			mii->mii_media_active |= IFM_1000_T|IFM_FDX;
105		else if ((gtcr & GTCR_ADV_1000THDX) &&
106		    (gtsr & GTSR_LP_1000THDX))
107			mii->mii_media_active |= IFM_1000_T|IFM_HDX;
108		else if (anlpar & ANLPAR_TX_FD)
109			mii->mii_media_active |= IFM_100_TX|IFM_FDX;
110		else if (anlpar & ANLPAR_T4)
111			mii->mii_media_active |= IFM_100_T4|IFM_HDX;
112		else if (anlpar & ANLPAR_TX)
113			mii->mii_media_active |= IFM_100_TX|IFM_HDX;
114		else if (anlpar & ANLPAR_10_FD)
115			mii->mii_media_active |= IFM_10_T|IFM_FDX;
116		else if (anlpar & ANLPAR_10)
117			mii->mii_media_active |= IFM_10_T|IFM_HDX;
118		else
119			mii->mii_media_active |= IFM_NONE;
120
121		if ((mii->mii_media_active & IFM_1000_T) != 0 &&
122		    (gtsr & GTSR_MS_RES) != 0)
123			mii->mii_media_active |= IFM_ETH_MASTER;
124
125		if ((mii->mii_media_active & IFM_FDX) != 0)
126			mii->mii_media_active |= mii_phy_flowstatus(phy);
127	} else
128		mii->mii_media_active = ife->ifm_media;
129}
130