Line data Source code
1 : /* $OpenBSD: ukphy.c,v 1.24 2016/07/11 09:50:02 kettenis Exp $ */
2 : /* $NetBSD: ukphy.c,v 1.9 2000/02/02 23:34:57 thorpej Exp $ */
3 :
4 : /*-
5 : * Copyright (c) 1998, 1999 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 : * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
36 : *
37 : * Redistribution and use in source and binary forms, with or without
38 : * modification, are permitted provided that the following conditions
39 : * are met:
40 : * 1. Redistributions of source code must retain the above copyright
41 : * notice, this list of conditions and the following disclaimer.
42 : * 2. Redistributions in binary form must reproduce the above copyright
43 : * notice, this list of conditions and the following disclaimer in the
44 : * documentation and/or other materials provided with the distribution.
45 : *
46 : * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47 : * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 : * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49 : * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50 : * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51 : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52 : * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53 : * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54 : * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55 : * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 : */
57 :
58 : /*
59 : * driver for generic unknown PHYs
60 : */
61 :
62 : #include <sys/param.h>
63 : #include <sys/systm.h>
64 : #include <sys/device.h>
65 : #include <sys/socket.h>
66 : #include <sys/errno.h>
67 :
68 : #include <net/if.h>
69 : #include <net/if_var.h>
70 : #include <net/if_media.h>
71 :
72 : #include <dev/mii/mii.h>
73 : #include <dev/mii/miivar.h>
74 :
75 : int ukphymatch(struct device *, void *, void *);
76 : void ukphyattach(struct device *, struct device *, void *);
77 :
78 : struct cfattach ukphy_ca = {
79 : sizeof(struct mii_softc), ukphymatch, ukphyattach, mii_phy_detach
80 : };
81 :
82 : struct cfdriver ukphy_cd = {
83 : NULL, "ukphy", DV_DULL
84 : };
85 :
86 : int ukphy_service(struct mii_softc *, struct mii_data *, int);
87 :
88 : const struct mii_phy_funcs ukphy_funcs = {
89 : ukphy_service, ukphy_status, mii_phy_reset,
90 : };
91 :
92 : int
93 0 : ukphymatch(struct device *parent, void *match, void *aux)
94 : {
95 :
96 : /*
97 : * We know something is here, so always match at a low priority.
98 : */
99 0 : return (1);
100 : }
101 :
102 : void
103 0 : ukphyattach(struct device *parent, struct device *self, void *aux)
104 : {
105 0 : struct mii_softc *sc = (struct mii_softc *)self;
106 0 : struct mii_attach_args *ma = aux;
107 0 : struct mii_data *mii = ma->mii_data;
108 :
109 0 : printf(": Generic IEEE 802.3u media interface, rev. %d:",
110 0 : MII_REV(ma->mii_id2));
111 0 : printf(" OUI 0x%06x, model 0x%04x\n",
112 0 : MII_OUI(ma->mii_id1, ma->mii_id2), MII_MODEL(ma->mii_id2));
113 :
114 0 : sc->mii_inst = mii->mii_instance;
115 0 : sc->mii_phy = ma->mii_phyno;
116 0 : sc->mii_funcs = &ukphy_funcs;
117 0 : sc->mii_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
118 0 : sc->mii_model = MII_MODEL(ma->mii_id2);
119 0 : sc->mii_pdata = mii;
120 0 : sc->mii_flags = ma->mii_flags;
121 :
122 : /*
123 : * Don't do loopback on unknown PHYs. It might confuse some of them.
124 : */
125 0 : sc->mii_flags |= MIIF_NOLOOP;
126 :
127 0 : PHY_RESET(sc);
128 :
129 0 : sc->mii_capabilities =
130 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
131 0 : if (sc->mii_capabilities & BMSR_EXTSTAT)
132 0 : sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
133 0 : if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
134 0 : (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
135 0 : printf("%s: no media present\n", sc->mii_dev.dv_xname);
136 : else
137 0 : mii_phy_add_media(sc);
138 0 : }
139 :
140 : int
141 0 : ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
142 : {
143 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
144 : int reg;
145 :
146 0 : if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
147 0 : return (ENXIO);
148 :
149 0 : switch (cmd) {
150 : case MII_POLLSTAT:
151 : /*
152 : * If we're not polling our PHY instance, just return.
153 : */
154 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
155 0 : return (0);
156 : break;
157 :
158 : case MII_MEDIACHG:
159 : /*
160 : * If the media indicates a different PHY instance,
161 : * isolate ourselves.
162 : */
163 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
164 0 : reg = PHY_READ(sc, MII_BMCR);
165 0 : PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
166 0 : return (0);
167 : }
168 :
169 : /*
170 : * If the interface is not up, don't do anything.
171 : */
172 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
173 : break;
174 :
175 0 : mii_phy_setmedia(sc);
176 0 : break;
177 :
178 : case MII_TICK:
179 : /*
180 : * If we're not currently selected, just return.
181 : */
182 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
183 0 : return (0);
184 :
185 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
186 0 : return (0);
187 : break;
188 :
189 : case MII_DOWN:
190 0 : mii_phy_down(sc);
191 0 : return (0);
192 : }
193 :
194 : /* Update the media status. */
195 0 : mii_phy_status(sc);
196 :
197 : /* Callback if something changed. */
198 0 : mii_phy_update(sc, cmd);
199 0 : return (0);
200 0 : }
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