1 /* $NetBSD: ukphy.c,v 1.2 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/ukphy.c,v 1.2.2.2 2002/11/08 21:53:49 semenu Exp $
40 * $DragonFly: src/sys/dev/netif/mii_layer/ukphy.c,v 1.9 2005/10/31 13:08:35 sephe 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 generic unknown PHYs
76 #include <sys/param.h>
77 #include <sys/systm.h>
78 #include <sys/kernel.h>
79 #include <sys/socket.h>
80 #include <sys/errno.h>
81 #include <sys/module.h>
85 #include <net/if_media.h>
87 #include <machine/clock.h>
92 #include "miibus_if.h"
94 static int ukphy_service(struct mii_softc *, struct mii_data *, int);
95 static int ukphy_probe(device_t);
97 static device_method_t ukphy_methods[] = {
98 /* device interface */
99 DEVMETHOD(device_probe, ukphy_probe),
100 DEVMETHOD(device_attach, ukphy_attach),
101 DEVMETHOD(device_detach, ukphy_detach),
102 DEVMETHOD(device_shutdown, bus_generic_shutdown),
106 static devclass_t ukphy_devclass;
108 static driver_t ukphy_driver = {
111 sizeof(struct mii_softc)
114 DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, 0, 0);
117 ukphy_probe(device_t dev)
121 * We know something is here, so always match at a low priority.
123 device_set_desc(dev, "Generic IEEE 802.3u media interface");
128 ukphy_attach(device_t dev)
130 struct mii_softc *sc;
131 struct mii_attach_args *ma;
132 struct mii_data *mii;
134 sc = device_get_softc(dev);
135 ma = device_get_ivars(dev);
136 mii_softc_init(sc, ma);
137 sc->mii_dev = device_get_parent(dev);
138 mii = device_get_softc(sc->mii_dev);
139 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
142 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
143 MII_OUI(ma->mii_id1, ma->mii_id2),
144 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
146 sc->mii_inst = mii->mii_instance;
147 sc->mii_service = ukphy_service;
152 sc->mii_flags |= MIIF_NOISOLATE;
154 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
156 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
159 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
160 BMCR_LOOP|BMCR_S100);
165 sc->mii_capabilities =
166 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
167 device_printf(dev, " ");
168 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
169 printf("no media present");
171 mii_add_media(sc, sc->mii_capabilities);
175 MIIBUS_MEDIAINIT(sc->mii_dev);
181 ukphy_detach(device_t dev)
183 struct mii_softc *sc;
184 struct mii_data *mii;
186 sc = device_get_softc(dev);
187 mii = device_get_softc(device_get_parent(dev));
188 mii_phy_auto_stop(sc);
190 LIST_REMOVE(sc, mii_list);
196 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
198 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
204 * If we're not polling our PHY instance, just return.
206 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
212 * If the media indicates a different PHY instance,
215 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
216 reg = PHY_READ(sc, MII_BMCR);
217 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
222 * If the interface is not up, don't do anything.
224 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
227 switch (IFM_SUBTYPE(ife->ifm_media)) {
230 * If we're already in auto mode, just return.
232 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
234 (void) mii_phy_auto(sc, 1);
238 * XXX Not supported as a manual setting right now.
243 * BMCR data is stored in the ifmedia entry.
245 PHY_WRITE(sc, MII_ANAR,
246 mii_anar(ife->ifm_media));
247 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
253 * If we're not currently selected, just return.
255 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
259 * Only used for autonegotiation.
261 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
265 * Is the interface even up?
267 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
271 * Check to see if we have link. If we do, we don't
272 * need to restart the autonegotiation process. Read
273 * the BMSR twice in case it's latched.
275 reg = PHY_READ(sc, MII_BMSR) |
276 PHY_READ(sc, MII_BMSR);
281 * Only retry autonegotiation every 5 seconds.
283 if (++sc->mii_ticks != 5)
288 if (mii_phy_auto(sc, 0) == EJUSTRETURN)
293 /* Update the media status. */
296 /* Callback if something changed. */
297 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
298 MIIBUS_STATCHG(sc->mii_dev);
299 sc->mii_active = mii->mii_media_active;