Line data Source code
1 : /* $OpenBSD: exphy.c,v 1.23 2015/03/14 03:38:48 jsg Exp $ */
2 : /* $NetBSD: exphy.c,v 1.23 2000/02/02 23:34:56 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 3Com internal PHYs
60 : */
61 :
62 : #include <sys/param.h>
63 : #include <sys/systm.h>
64 : #include <sys/device.h>
65 : #include <sys/socket.h>
66 :
67 : #include <net/if.h>
68 : #include <net/if_var.h>
69 : #include <net/if_media.h>
70 :
71 : #include <dev/mii/mii.h>
72 : #include <dev/mii/miivar.h>
73 : #include <dev/mii/miidevs.h>
74 :
75 : int exphymatch(struct device *, void *, void *);
76 : void exphyattach(struct device *, struct device *, void *);
77 :
78 : struct cfattach exphy_ca = {
79 : sizeof(struct mii_softc), exphymatch, exphyattach, mii_phy_detach
80 : };
81 :
82 : struct cfdriver exphy_cd = {
83 : NULL, "exphy", DV_DULL
84 : };
85 :
86 : int exphy_service(struct mii_softc *, struct mii_data *, int);
87 : void exphy_reset(struct mii_softc *);
88 :
89 : const struct mii_phy_funcs exphy_funcs = {
90 : exphy_service, ukphy_status, exphy_reset,
91 : };
92 :
93 : int
94 0 : exphymatch(struct device *parent, void *match, void *aux)
95 : {
96 0 : struct mii_attach_args *ma = aux;
97 :
98 : /*
99 : * Since 3com's PHY for some xl adapters is braindead and doesn't
100 : * report the proper OUI/MODEL information, we have this stupid
101 : * match function.
102 : */
103 0 : if ((strcmp(parent->dv_cfdata->cf_driver->cd_name, "xl") == 0) &&
104 0 : ((MII_OUI(ma->mii_id1, ma->mii_id2) == 0 &&
105 0 : MII_MODEL(ma->mii_id2) == 0) ||
106 0 : (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_3COM &&
107 0 : MII_MODEL(ma->mii_id2) == 0)))
108 0 : return (10);
109 :
110 0 : return (0);
111 0 : }
112 :
113 : void
114 0 : exphyattach(struct device *parent, struct device *self, void *aux)
115 : {
116 0 : struct mii_softc *sc = (struct mii_softc *)self;
117 0 : struct mii_attach_args *ma = aux;
118 0 : struct mii_data *mii = ma->mii_data;
119 :
120 0 : printf(": 3Com internal media interface\n");
121 :
122 0 : sc->mii_inst = mii->mii_instance;
123 0 : sc->mii_phy = ma->mii_phyno;
124 0 : sc->mii_funcs = &exphy_funcs;
125 0 : sc->mii_pdata = mii;
126 0 : sc->mii_flags = ma->mii_flags;
127 :
128 0 : sc->mii_flags |= MIIF_NOISOLATE;
129 :
130 : /*
131 : * The 3Com PHY can never be isolated, so never allow non-zero
132 : * instances!
133 : */
134 0 : if (mii->mii_instance != 0) {
135 0 : printf("%s: ignoring this PHY, non-zero instance\n",
136 0 : sc->mii_dev.dv_xname);
137 0 : return;
138 : }
139 :
140 0 : PHY_RESET(sc);
141 :
142 0 : sc->mii_capabilities =
143 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
144 0 : if (sc->mii_capabilities & BMSR_MEDIAMASK)
145 0 : mii_phy_add_media(sc);
146 0 : }
147 :
148 : int
149 0 : exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
150 : {
151 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
152 :
153 0 : if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
154 0 : return (ENXIO);
155 :
156 : /*
157 : * We can't isolate the 3Com PHY, so it has to be the only one!
158 : */
159 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
160 0 : panic("exphy_service: can't isolate 3Com PHY");
161 :
162 0 : switch (cmd) {
163 : case MII_POLLSTAT:
164 : break;
165 :
166 : case MII_MEDIACHG:
167 : /*
168 : * If the interface is not up, don't do anything.
169 : */
170 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
171 : break;
172 :
173 0 : mii_phy_setmedia(sc);
174 0 : break;
175 :
176 : case MII_TICK:
177 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
178 0 : return (0);
179 :
180 : break;
181 :
182 : case MII_DOWN:
183 0 : mii_phy_down(sc);
184 0 : return (0);
185 : }
186 :
187 : /* Update the media status. */
188 0 : mii_phy_status(sc);
189 :
190 : /* Callback if something changed. */
191 0 : mii_phy_update(sc, cmd);
192 0 : return (0);
193 0 : }
194 :
195 : void
196 0 : exphy_reset(struct mii_softc *sc)
197 : {
198 :
199 0 : mii_phy_reset(sc);
200 :
201 : /*
202 : * XXX 3Com PHY doesn't set the BMCR properly after
203 : * XXX reset, which breaks autonegotiation.
204 : */
205 0 : PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);
206 0 : }
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