1 | /* $NetBSD: ukphy_subr.c,v 1.13 2014/06/16 16:48:16 msaitoh 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 | /* |
34 | * Subroutines shared by the ukphy driver and other PHY drivers. |
35 | */ |
36 | |
37 | #include <sys/cdefs.h> |
38 | __KERNEL_RCSID(0, "$NetBSD: ukphy_subr.c,v 1.13 2014/06/16 16:48:16 msaitoh Exp $" ); |
39 | |
40 | #include <sys/param.h> |
41 | #include <sys/systm.h> |
42 | #include <sys/kernel.h> |
43 | #include <sys/device.h> |
44 | #include <sys/socket.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 | /* |
53 | * Media status subroutine. If a PHY driver does media detection simply |
54 | * by decoding the NWay autonegotiation, use this routine. |
55 | */ |
56 | void |
57 | ukphy_status(struct mii_softc *phy) |
58 | { |
59 | struct mii_data *mii = phy->mii_pdata; |
60 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
61 | int bmsr, bmcr, anlpar, gtcr, gtsr; |
62 | |
63 | mii->mii_media_status = IFM_AVALID; |
64 | mii->mii_media_active = IFM_ETHER; |
65 | |
66 | bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); |
67 | if (bmsr & BMSR_LINK) |
68 | mii->mii_media_status |= IFM_ACTIVE; |
69 | |
70 | bmcr = PHY_READ(phy, MII_BMCR); |
71 | if (bmcr & BMCR_ISO) { |
72 | mii->mii_media_active |= IFM_NONE; |
73 | mii->mii_media_status = 0; |
74 | return; |
75 | } |
76 | |
77 | if (bmcr & BMCR_LOOP) |
78 | mii->mii_media_active |= IFM_LOOP; |
79 | |
80 | if (bmcr & BMCR_AUTOEN) { |
81 | /* |
82 | * NWay autonegotiation takes the highest-order common |
83 | * bit of the ANAR and ANLPAR (i.e. best media advertised |
84 | * both by us and our link partner). |
85 | */ |
86 | if ((bmsr & BMSR_ACOMP) == 0) { |
87 | /* Erg, still trying, I guess... */ |
88 | mii->mii_media_active |= IFM_NONE; |
89 | return; |
90 | } |
91 | |
92 | anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR); |
93 | if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 && |
94 | (phy->mii_extcapabilities & |
95 | (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0) { |
96 | gtcr = PHY_READ(phy, MII_100T2CR); |
97 | gtsr = PHY_READ(phy, MII_100T2SR); |
98 | } else |
99 | gtcr = gtsr = 0; |
100 | |
101 | if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX)) |
102 | mii->mii_media_active |= IFM_1000_T|IFM_FDX; |
103 | else if ((gtcr & GTCR_ADV_1000THDX) && |
104 | (gtsr & GTSR_LP_1000THDX)) |
105 | mii->mii_media_active |= IFM_1000_T|IFM_HDX; |
106 | else if (anlpar & ANLPAR_TX_FD) |
107 | mii->mii_media_active |= IFM_100_TX|IFM_FDX; |
108 | else if (anlpar & ANLPAR_T4) |
109 | mii->mii_media_active |= IFM_100_T4|IFM_HDX; |
110 | else if (anlpar & ANLPAR_TX) |
111 | mii->mii_media_active |= IFM_100_TX|IFM_HDX; |
112 | else if (anlpar & ANLPAR_10_FD) |
113 | mii->mii_media_active |= IFM_10_T|IFM_FDX; |
114 | else if (anlpar & ANLPAR_10) |
115 | mii->mii_media_active |= IFM_10_T|IFM_HDX; |
116 | else |
117 | mii->mii_media_active |= IFM_NONE; |
118 | |
119 | if ((mii->mii_media_active & IFM_1000_T) && |
120 | (gtsr & GTSR_MS_RES)) |
121 | mii->mii_media_active |= IFM_ETH_MASTER; |
122 | |
123 | if (mii->mii_media_active & IFM_FDX) |
124 | mii->mii_media_active |= mii_phy_flowstatus(phy); |
125 | } else |
126 | mii->mii_media_active = ife->ifm_media; |
127 | } |
128 | |