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.
39 * $FreeBSD: src/sys/dev/mii/exphy.c,v 1.4.2.2 2002/11/08 21:53:49 semenu Exp $
40 * $DragonFly: src/sys/dev/netif/mii_layer/exphy.c,v 1.2 2003/06/17 04:28:28 dillon Exp $
44 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
46 * Redistribution and use in source and binary forms, with or without
47 * modification, are permitted provided that the following conditions
49 * 1. Redistributions of source code must retain the above copyright
50 * notice, this list of conditions and the following disclaimer.
51 * 2. Redistributions in binary form must reproduce the above copyright
52 * notice, this list of conditions and the following disclaimer in the
53 * documentation and/or other materials provided with the distribution.
54 * 3. All advertising materials mentioning features or use of this software
55 * must display the following acknowledgement:
56 * This product includes software developed by Manuel Bouyer.
57 * 4. The name of the author may not be used to endorse or promote products
58 * derived from this software without specific prior written permission.
60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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>
88 #include <dev/mii/miidevs.h>
90 #include "miibus_if.h"
92 static int exphy_probe __P((device_t));
93 static int exphy_attach __P((device_t));
94 static int exphy_detach __P((device_t));
96 static device_method_t exphy_methods[] = {
97 /* device interface */
98 DEVMETHOD(device_probe, exphy_probe),
99 DEVMETHOD(device_attach, exphy_attach),
100 DEVMETHOD(device_detach, exphy_detach),
101 DEVMETHOD(device_shutdown, bus_generic_shutdown),
105 static devclass_t exphy_devclass;
107 static driver_t exphy_driver = {
110 sizeof(struct mii_softc)
113 DRIVER_MODULE(xlphy, miibus, exphy_driver, exphy_devclass, 0, 0);
115 int exphy_service __P((struct mii_softc *, struct mii_data *, int));
116 void exphy_reset __P((struct mii_softc *));
118 static int exphy_probe(dev)
121 struct mii_attach_args *ma;
124 ma = device_get_ivars(dev);
125 parent = device_get_parent(device_get_parent(dev));
128 * Argh, 3Com PHY reports oui == 0 model == 0!
130 if ((MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
131 MII_MODEL(ma->mii_id2) != 0) &&
132 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM ||
133 MII_MODEL(ma->mii_id2) != MII_MODEL_BROADCOM_3c905Cphy))
137 * Make sure the parent is an `ex'.
139 if (strcmp(device_get_name(parent), "xl") != 0)
142 if (MII_OUI(ma->mii_id1, ma->mii_id2) == 0)
143 device_set_desc(dev, "3Com internal media interface");
145 device_set_desc(dev, MII_STR_BROADCOM_3c905Cphy);
150 static int exphy_attach(dev)
153 struct mii_softc *sc;
154 struct mii_attach_args *ma;
155 struct mii_data *mii;
157 sc = device_get_softc(dev);
158 ma = device_get_ivars(dev);
159 sc->mii_dev = device_get_parent(dev);
160 mii = device_get_softc(sc->mii_dev);
163 * The 3Com PHY can never be isolated, so never allow non-zero
166 if (mii->mii_instance != 0) {
167 device_printf(dev, "ignoring this PHY, non-zero instance\n");
171 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
173 sc->mii_inst = mii->mii_instance;
174 sc->mii_phy = ma->mii_phyno;
175 sc->mii_service = exphy_service;
179 sc->mii_flags |= MIIF_NOISOLATE;
181 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
183 #if 0 /* See above. */
184 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
188 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
189 BMCR_LOOP|BMCR_S100);
193 sc->mii_capabilities =
194 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
195 device_printf(dev, " ");
196 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
197 printf("no media present");
199 mii_add_media(mii, sc->mii_capabilities,
203 MIIBUS_MEDIAINIT(sc->mii_dev);
207 static int exphy_detach(dev)
210 struct mii_softc *sc;
211 struct mii_data *mii;
213 sc = device_get_softc(dev);
214 mii = device_get_softc(device_get_parent(dev));
215 mii_phy_auto_stop(sc);
217 LIST_REMOVE(sc, mii_list);
223 exphy_service(sc, mii, cmd)
224 struct mii_softc *sc;
225 struct mii_data *mii;
228 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
231 * We can't isolate the 3Com PHY, so it has to be the only one!
233 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
234 panic("exphy_service: can't isolate 3Com PHY");
242 * If the interface is not up, don't do anything.
244 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
247 switch (IFM_SUBTYPE(ife->ifm_media)) {
250 * If we're already in auto mode, just return.
252 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
254 (void) mii_phy_auto(sc, 1);
258 * XXX Not supported as a manual setting right now.
263 * BMCR data is stored in the ifmedia entry.
265 PHY_WRITE(sc, MII_ANAR,
266 mii_anar(ife->ifm_media));
267 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
273 * Only used for autonegotiation.
275 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
279 * Is the interface even up?
281 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
285 * The 3Com PHY's autonegotiation doesn't need to be
286 * kicked; it continues in the background.
291 /* Update the media status. */
294 /* Callback if something changed. */
295 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
296 MIIBUS_STATCHG(sc->mii_dev);
297 sc->mii_active = mii->mii_media_active;
304 struct mii_softc *sc;
310 * XXX 3Com PHY doesn't set the BMCR properly after
311 * XXX reset, which breaks autonegotiation.
313 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);