1 /* $NetBSD: exphy.c,v 1.16 1999/04/23 04:24:32 thorpej Exp $ */
4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
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.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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.
41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. All advertising materials mentioning features or use of this software
52 * must display the following acknowledgement:
53 * This product includes software developed by Manuel Bouyer.
54 * 4. The name of the author may not be used to endorse or promote products
55 * derived from this software without specific prior written permission.
57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69 #include <sys/cdefs.h>
70 __FBSDID("$FreeBSD$");
73 * driver for 3Com internal PHYs
76 #include <sys/param.h>
77 #include <sys/systm.h>
78 #include <sys/kernel.h>
79 #include <sys/socket.h>
80 #include <sys/module.h>
84 #include <net/if_media.h>
86 #include <dev/mii/mii.h>
87 #include <dev/mii/miivar.h>
90 #include "miibus_if.h"
92 static int exphy_probe(device_t);
93 static int exphy_attach(device_t);
95 static device_method_t exphy_methods[] = {
96 /* device interface */
97 DEVMETHOD(device_probe, exphy_probe),
98 DEVMETHOD(device_attach, exphy_attach),
99 DEVMETHOD(device_detach, mii_phy_detach),
100 DEVMETHOD(device_shutdown, bus_generic_shutdown),
104 static devclass_t exphy_devclass;
106 static driver_t exphy_driver = {
109 sizeof(struct mii_softc)
112 DRIVER_MODULE(xlphy, miibus, exphy_driver, exphy_devclass, 0, 0);
114 static int exphy_service(struct mii_softc *, struct mii_data *, int);
115 static void exphy_reset(struct mii_softc *);
118 * Some 3Com internal PHYs report zero for OUI and model, others use
120 * Note that the 3Com internal PHYs having OUI 0x105a and model 0 are
121 * handled fine by ukphy(4); they can be isolated and don't require
122 * special treatment after reset.
124 static const struct mii_phydesc exphys[] = {
125 { 0, 0, "3Com internal media interface" },
126 MII_PHY_DESC(BROADCOM, 3C905C),
131 exphy_probe(device_t dev)
134 if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))),
136 return (mii_phy_dev_probe(dev, exphys, BUS_PROBE_DEFAULT));
141 exphy_attach(device_t dev)
143 struct mii_softc *sc;
144 struct mii_attach_args *ma;
145 struct mii_data *mii;
147 sc = device_get_softc(dev);
148 ma = device_get_ivars(dev);
149 sc->mii_dev = device_get_parent(dev);
150 mii = device_get_softc(sc->mii_dev);
153 * The 3Com PHY can never be isolated, so never allow non-zero
156 if (mii->mii_instance != 0) {
157 device_printf(dev, "ignoring this PHY, non-zero instance\n");
161 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
163 sc->mii_inst = mii->mii_instance;
164 sc->mii_phy = ma->mii_phyno;
165 sc->mii_service = exphy_service;
169 sc->mii_flags |= MIIF_NOISOLATE;
171 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
178 sc->mii_capabilities =
179 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
180 device_printf(dev, " ");
181 mii_phy_add_media(sc);
184 MIIBUS_MEDIAINIT(sc->mii_dev);
189 exphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
191 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
194 * We can't isolate the 3Com PHY, so it has to be the only one!
196 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
197 panic("exphy_service: can't isolate 3Com PHY");
205 * If the interface is not up, don't do anything.
207 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
210 mii_phy_setmedia(sc);
215 * Is the interface even up?
217 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
221 * The 3Com PHY's autonegotiation doesn't need to be
222 * kicked; it continues in the background.
227 /* Update the media status. */
230 /* Callback if something changed. */
231 mii_phy_update(sc, cmd);
236 exphy_reset(struct mii_softc *sc)
242 * XXX 3Com PHY doesn't set the BMCR properly after
243 * XXX reset, which breaks autonegotiation.
245 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);