1 /* $OpenBSD: exphy.c,v 1.18 2005/02/04 23:23:56 brad 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 * 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 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
43 *
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
46 * are met:
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 * notice, this list of conditions and the following disclaimer in the
51 * documentation and/or other materials provided with the distribution.
52 * 3. All advertising materials mentioning features or use of this software
53 * must display the following acknowledgement:
54 * This product includes software developed by Manuel Bouyer.
55 * 4. The name of the author may not be used to endorse or promote products
56 * derived from this software without specific prior written permission.
57 *
58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
68 */
69
70 /*
71 * driver for 3Com internal PHYs
72 */
73
74 #include <sys/param.h>
75 #include <sys/systm.h>
76 #include <sys/kernel.h>
77 #include <sys/device.h>
78 #include <sys/socket.h>
79
80 #include <net/if.h>
81 #include <net/if_media.h>
82
83 #include <dev/mii/mii.h>
84 #include <dev/mii/miivar.h>
85 #include <dev/mii/miidevs.h>
86
87 int exphymatch(struct device *, void *, void *);
88 void exphyattach(struct device *, struct device *, void *);
89
90 struct cfattach exphy_ca = {
91 sizeof(struct mii_softc), exphymatch, exphyattach, mii_phy_detach,
92 mii_phy_activate
93 };
94
95 struct cfdriver exphy_cd = {
96 NULL, "exphy", DV_DULL
97 };
98
99 int exphy_service(struct mii_softc *, struct mii_data *, int);
100 void exphy_reset(struct mii_softc *);
101
102 const struct mii_phy_funcs exphy_funcs = {
103 exphy_service, ukphy_status, exphy_reset,
104 };
105
106 int
107 exphymatch(struct device *parent, void *match, void *aux)
108 {
109 struct mii_attach_args *ma = aux;
110
111 /*
112 * Since 3com's PHY for some xl adapters is braindead and doesn't
113 * report the proper OUI/MODEL information, we have this stupid
114 * match function.
115 */
116 if ((strcmp(parent->dv_cfdata->cf_driver->cd_name, "xl") == 0) &&
117 ((MII_OUI(ma->mii_id1, ma->mii_id2) == 0 &&
118 MII_MODEL(ma->mii_id2) == 0) ||
119 (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_3COM &&
120 MII_MODEL(ma->mii_id2) == 0)))
121 return (10);
122
123 return (0);
124 }
125
126 void
127 exphyattach(struct device *parent, struct device *self, void *aux)
128 {
129 struct mii_softc *sc = (struct mii_softc *)self;
130 struct mii_attach_args *ma = aux;
131 struct mii_data *mii = ma->mii_data;
132
133 printf(": 3Com internal media interface\n");
134
135 sc->mii_inst = mii->mii_instance;
136 sc->mii_phy = ma->mii_phyno;
137 sc->mii_funcs = &exphy_funcs;
138 sc->mii_pdata = mii;
139 sc->mii_flags = ma->mii_flags;
140
141 sc->mii_flags |= MIIF_NOISOLATE;
142
143 /*
144 * The 3Com PHY can never be isolated, so never allow non-zero
145 * instances!
146 */
147 if (mii->mii_instance != 0) {
148 printf("%s: ignoring this PHY, non-zero instance\n",
149 sc->mii_dev.dv_xname);
150 return;
151 }
152
153 PHY_RESET(sc);
154
155 sc->mii_capabilities =
156 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
157 if (sc->mii_capabilities & BMSR_MEDIAMASK)
158 mii_phy_add_media(sc);
159 }
160
161 int
162 exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
163 {
164 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
165
166 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
167 return (ENXIO);
168
169 /*
170 * We can't isolate the 3Com PHY, so it has to be the only one!
171 */
172 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
173 panic("exphy_service: can't isolate 3Com PHY");
174
175 switch (cmd) {
176 case MII_POLLSTAT:
177 break;
178
179 case MII_MEDIACHG:
180 /*
181 * If the interface is not up, don't do anything.
182 */
183 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
184 break;
185
186 mii_phy_setmedia(sc);
187 break;
188
189 case MII_TICK:
190 if (mii_phy_tick(sc) == EJUSTRETURN)
191 return (0);
192
193 break;
194
195 case MII_DOWN:
196 mii_phy_down(sc);
197 return (0);
198 }
199
200 /* Update the media status. */
201 mii_phy_status(sc);
202
203 /* Callback if something changed. */
204 mii_phy_update(sc, cmd);
205 return (0);
206 }
207
208 void
209 exphy_reset(struct mii_softc *sc)
210 {
211
212 mii_phy_reset(sc);
213
214 /*
215 * XXX 3Com PHY doesn't set the BMCR properly after
216 * XXX reset, which breaks autonegotiation.
217 */
218 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);
219 }