1 /* $OpenBSD: ukphy_subr.c,v 1.7 2006/12/27 19:11:09 kettenis 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 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the NetBSD
23 * Foundation, Inc. and its contributors.
24 * 4. Neither the name of The NetBSD Foundation nor the names of its
25 * contributors may be used to endorse or promote products derived
26 * from this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGE.
39 */
40
41 /*
42 * Subroutines shared by the ukphy driver and other PHY drivers.
43 */
44
45 #include <sys/param.h>
46 #include <sys/systm.h>
47 #include <sys/kernel.h>
48 #include <sys/device.h>
49 #include <sys/socket.h>
50
51 #include <net/if.h>
52 #include <net/if_media.h>
53
54 #include <dev/mii/mii.h>
55 #include <dev/mii/miivar.h>
56
57 /*
58 * Media status subroutine. If a PHY driver does media detection simply
59 * by decoding the NWay autonegotiation, use this routine.
60 */
61 void
62 ukphy_status(struct mii_softc *phy)
63 {
64 struct mii_data *mii = phy->mii_pdata;
65 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
66 int bmsr, bmcr, anlpar, gtcr, gtsr;
67
68 mii->mii_media_status = IFM_AVALID;
69 mii->mii_media_active = IFM_ETHER;
70
71 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
72 if (bmsr & BMSR_LINK)
73 mii->mii_media_status |= IFM_ACTIVE;
74
75 bmcr = PHY_READ(phy, MII_BMCR);
76 if (bmcr & BMCR_ISO) {
77 mii->mii_media_active |= IFM_NONE;
78 mii->mii_media_status = 0;
79 return;
80 }
81
82 if (bmcr & BMCR_LOOP)
83 mii->mii_media_active |= IFM_LOOP;
84
85 if (bmcr & BMCR_AUTOEN) {
86 /*
87 * NWay autonegotiation takes the highest-order common
88 * bit of the ANAR and ANLPAR (i.e. best media advertised
89 * both by us and our link partner).
90 */
91 if ((bmsr & BMSR_ACOMP) == 0) {
92 /* Erg, still trying, I guess... */
93 mii->mii_media_active |= IFM_NONE;
94 return;
95 }
96
97 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
98 if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 &&
99 (phy->mii_extcapabilities &
100 (EXTSR_1000THDX|EXTSR_1000TFDX)) != 0) {
101 gtcr = PHY_READ(phy, MII_100T2CR);
102 gtsr = PHY_READ(phy, MII_100T2SR);
103 } else
104 gtcr = gtsr = 0;
105
106 if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX))
107 mii->mii_media_active |= IFM_1000_T|IFM_FDX;
108 else if ((gtcr & GTCR_ADV_1000THDX) &&
109 (gtsr & GTSR_LP_1000THDX))
110 mii->mii_media_active |= IFM_1000_T|IFM_HDX;
111 else if (anlpar & ANLPAR_T4)
112 mii->mii_media_active |= IFM_100_T4|IFM_HDX;
113 else if (anlpar & ANLPAR_TX_FD)
114 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
115 else if (anlpar & ANLPAR_TX)
116 mii->mii_media_active |= IFM_100_TX|IFM_HDX;
117 else if (anlpar & ANLPAR_10_FD)
118 mii->mii_media_active |= IFM_10_T|IFM_FDX;
119 else if (anlpar & ANLPAR_10)
120 mii->mii_media_active |= IFM_10_T|IFM_HDX;
121 else
122 mii->mii_media_active |= IFM_NONE;
123
124 if ((IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) &&
125 (gtsr & GTSR_MS_RES))
126 mii->mii_media_active |= IFM_ETH_MASTER;
127 } else
128 mii->mii_media_active = ife->ifm_media;
129 }