1 /* $NetBSD: ukphy_subr.c,v 1.6.8.1 2004/08/12 18:16:01 jmc 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 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 /*
41 * Subroutines shared by the ukphy driver and other PHY drivers.
42 */
43
44 #include <sys/cdefs.h>
45 __KERNEL_RCSID(0, "$NetBSD: ukphy_subr.c,v 1.6.8.1 2004/08/12 18:16:01 jmc Exp $");
46
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/device.h>
51 #include <sys/socket.h>
52
53 #include <net/if.h>
54 #include <net/if_media.h>
55
56 #include <dev/mii/mii.h>
57 #include <dev/mii/miivar.h>
58
59 /*
60 * Media status subroutine. If a PHY driver does media detection simply
61 * by decoding the NWay autonegotiation, use this routine.
62 */
63 void
64 ukphy_status(struct mii_softc *phy)
65 {
66 struct mii_data *mii = phy->mii_pdata;
67 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
68 int bmsr, bmcr, anlpar, gtcr, gtsr;
69
70 mii->mii_media_status = IFM_AVALID;
71 mii->mii_media_active = IFM_ETHER;
72
73 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
74 if (bmsr & BMSR_LINK)
75 mii->mii_media_status |= IFM_ACTIVE;
76
77 bmcr = PHY_READ(phy, MII_BMCR);
78 if (bmcr & BMCR_ISO) {
79 mii->mii_media_active |= IFM_NONE;
80 mii->mii_media_status = 0;
81 return;
82 }
83
84 if (bmcr & BMCR_LOOP)
85 mii->mii_media_active |= IFM_LOOP;
86
87 if (bmcr & BMCR_AUTOEN) {
88 /*
89 * NWay autonegotiation takes the highest-order common
90 * bit of the ANAR and ANLPAR (i.e. best media advertised
91 * both by us and our link partner).
92 */
93 if ((bmsr & BMSR_ACOMP) == 0) {
94 /* Erg, still trying, I guess... */
95 mii->mii_media_active |= IFM_NONE;
96 return;
97 }
98
99 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
100 if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 &&
101 (phy->mii_extcapabilities &
102 (EXTSR_1000THDX|EXTSR_1000TFDX)) != 0) {
103 gtcr = PHY_READ(phy, MII_100T2CR);
104 gtsr = PHY_READ(phy, MII_100T2SR);
105 } else
106 gtcr = gtsr = 0;
107
108 if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX))
109 mii->mii_media_active |= IFM_1000_T|IFM_FDX;
110 else if ((gtcr & GTCR_ADV_1000THDX) &&
111 (gtsr & GTSR_LP_1000THDX))
112 mii->mii_media_active |= IFM_1000_T;
113 else if (anlpar & ANLPAR_T4)
114 mii->mii_media_active |= IFM_100_T4;
115 else if (anlpar & ANLPAR_TX_FD)
116 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
117 else if (anlpar & ANLPAR_TX)
118 mii->mii_media_active |= IFM_100_TX;
119 else if (anlpar & ANLPAR_10_FD)
120 mii->mii_media_active |= IFM_10_T|IFM_FDX;
121 else if (anlpar & ANLPAR_10)
122 mii->mii_media_active |= IFM_10_T;
123 else
124 mii->mii_media_active |= IFM_NONE;
125
126 if ((mii->mii_media_active & IFM_1000_T) &&
127 (gtsr & GTSR_MS_RES))
128 mii->mii_media_active |= IFM_ETH_MASTER;
129 } else
130 mii->mii_media_active = ife->ifm_media;
131 }
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