1 /* $OpenBSD: ukphy_subr.c,v 1.10 2008/10/24 16:50:01 brad Exp $ */
2 /* $NetBSD: ukphy_subr.c,v 1.2 1998/11/05 04:08:02 thorpej Exp $ */
3
4 /*-
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center, and by Frank van der Linden.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /*
35 * Subroutines shared by the ukphy driver and other PHY drivers.
36 */
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/kernel.h>
41 #include <sys/device.h>
42 #include <sys/socket.h>
43
44 #include <net/if.h>
45 #include <net/if_media.h>
46
47 #include <dev/mii/mii.h>
48 #include <dev/mii/miivar.h>
49
50 /*
51 * Media status subroutine. If a PHY driver does media detection simply
52 * by decoding the NWay autonegotiation, use this routine.
53 */
54 void
ukphy_status(struct mii_softc * phy)55 ukphy_status(struct mii_softc *phy)
56 {
57 struct mii_data *mii = phy->mii_pdata;
58 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
59 int bmsr, bmcr, anlpar, gtcr, gtsr;
60
61 mii->mii_media_status = IFM_AVALID;
62 mii->mii_media_active = IFM_ETHER;
63
64 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
65 if (bmsr & BMSR_LINK)
66 mii->mii_media_status |= IFM_ACTIVE;
67
68 bmcr = PHY_READ(phy, MII_BMCR);
69 if (bmcr & BMCR_ISO) {
70 mii->mii_media_active |= IFM_NONE;
71 mii->mii_media_status = 0;
72 return;
73 }
74
75 if (bmcr & BMCR_LOOP)
76 mii->mii_media_active |= IFM_LOOP;
77
78 if (bmcr & BMCR_AUTOEN) {
79 /*
80 * NWay autonegotiation takes the highest-order common
81 * bit of the ANAR and ANLPAR (i.e. best media advertised
82 * both by us and our link partner).
83 */
84 if ((bmsr & BMSR_ACOMP) == 0) {
85 /* Erg, still trying, I guess... */
86 mii->mii_media_active |= IFM_NONE;
87 return;
88 }
89
90 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
91 if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 &&
92 (phy->mii_extcapabilities &
93 (EXTSR_1000THDX|EXTSR_1000TFDX)) != 0) {
94 gtcr = PHY_READ(phy, MII_100T2CR);
95 gtsr = PHY_READ(phy, MII_100T2SR);
96 } else
97 gtcr = gtsr = 0;
98
99 if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX))
100 mii->mii_media_active |= IFM_1000_T|IFM_FDX;
101 else if ((gtcr & GTCR_ADV_1000THDX) &&
102 (gtsr & GTSR_LP_1000THDX))
103 mii->mii_media_active |= IFM_1000_T|IFM_HDX;
104 else if (anlpar & ANLPAR_TX_FD)
105 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
106 else if (anlpar & ANLPAR_T4)
107 mii->mii_media_active |= IFM_100_T4|IFM_HDX;
108 else if (anlpar & ANLPAR_TX)
109 mii->mii_media_active |= IFM_100_TX|IFM_HDX;
110 else if (anlpar & ANLPAR_10_FD)
111 mii->mii_media_active |= IFM_10_T|IFM_FDX;
112 else if (anlpar & ANLPAR_10)
113 mii->mii_media_active |= IFM_10_T|IFM_HDX;
114 else
115 mii->mii_media_active |= IFM_NONE;
116
117 if (mii->mii_media_active & IFM_FDX)
118 mii->mii_media_active |= mii_phy_flowstatus(phy);
119
120 if ((IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) &&
121 (gtsr & GTSR_MS_RES))
122 mii->mii_media_active |= IFM_ETH_MASTER;
123 } else
124 mii->mii_media_active = ife->ifm_media;
125 }
126