2 * Copyright (c) 2000,2001 Jonathan Chen.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions, and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
33 * Driver for the TDK 78Q2120 MII
36 * Datasheet for the 78Q2120 - http://www.tsc.tdk.com/lan/78q2120.pdf
37 * Most of this code stolen from ukphy.c
41 * The TDK 78Q2120 is found on some Xircom X3201 based cardbus cards. It's just
42 * like any other normal phy, except it does auto negotiation in a different
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/kernel.h>
49 #include <sys/socket.h>
50 #include <sys/errno.h>
51 #include <sys/module.h>
55 #include <net/if_media.h>
57 #include <machine/clock.h>
59 #include <dev/mii/mii.h>
60 #include <dev/mii/miivar.h>
63 #include <dev/mii/tdkphyreg.h>
65 #include "miibus_if.h"
67 static int tdkphy_probe(device_t);
68 static int tdkphy_attach(device_t);
70 static device_method_t tdkphy_methods[] = {
71 /* device interface */
72 DEVMETHOD(device_probe, tdkphy_probe),
73 DEVMETHOD(device_attach, tdkphy_attach),
74 DEVMETHOD(device_detach, mii_phy_detach),
75 DEVMETHOD(device_shutdown, bus_generic_shutdown),
79 static devclass_t tdkphy_devclass;
81 static driver_t tdkphy_driver = {
84 sizeof(struct mii_softc)
87 DRIVER_MODULE(tdkphy, miibus, tdkphy_driver, tdkphy_devclass, 0, 0);
89 static int tdkphy_service(struct mii_softc *, struct mii_data *, int);
90 static void tdkphy_status(struct mii_softc *);
92 static const struct mii_phydesc tdkphys[] = {
93 MII_PHY_DESC(TDK, 78Q2120),
98 tdkphy_probe(device_t dev)
101 return (mii_phy_dev_probe(dev, tdkphys, BUS_PROBE_DEFAULT));
105 tdkphy_attach(device_t dev)
107 struct mii_softc *sc;
108 struct mii_attach_args *ma;
109 struct mii_data *mii;
110 sc = device_get_softc(dev);
111 ma = device_get_ivars(dev);
112 sc->mii_dev = device_get_parent(dev);
113 mii = device_get_softc(sc->mii_dev);
114 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
117 device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
118 MII_OUI(ma->mii_id1, ma->mii_id2),
119 MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
121 sc->mii_inst = mii->mii_instance;
122 sc->mii_phy = ma->mii_phyno;
123 sc->mii_service = tdkphy_service;
129 * Apparently, we can't do loopback on this PHY.
131 sc->mii_flags |= MIIF_NOLOOP;
135 sc->mii_capabilities =
136 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
137 device_printf(dev, " ");
138 mii_phy_add_media(sc);
141 MIIBUS_MEDIAINIT(sc->mii_dev);
146 tdkphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
148 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
154 * If we're not polling our PHY instance, just return.
156 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
162 * If the media indicates a different PHY instance,
165 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
166 reg = PHY_READ(sc, MII_BMCR);
167 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
172 * If the interface is not up, don't do anything.
174 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
177 mii_phy_setmedia(sc);
182 * If we're not currently selected, just return.
184 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
186 if (mii_phy_tick(sc) == EJUSTRETURN)
191 /* Update the media status. */
193 if (sc->mii_pdata->mii_media_active & IFM_FDX)
194 PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) | BMCR_FDX);
196 PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) & ~BMCR_FDX);
198 /* Callback if something changed. */
199 mii_phy_update(sc, cmd);
204 tdkphy_status(struct mii_softc *phy)
206 struct mii_data *mii = phy->mii_pdata;
207 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
208 int bmsr, bmcr, anlpar, diag;
210 mii->mii_media_status = IFM_AVALID;
211 mii->mii_media_active = IFM_ETHER;
213 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
214 if (bmsr & BMSR_LINK)
215 mii->mii_media_status |= IFM_ACTIVE;
217 bmcr = PHY_READ(phy, MII_BMCR);
218 if (bmcr & BMCR_ISO) {
219 mii->mii_media_active |= IFM_NONE;
220 mii->mii_media_status = 0;
224 if (bmcr & BMCR_LOOP)
225 mii->mii_media_active |= IFM_LOOP;
227 if (bmcr & BMCR_AUTOEN) {
229 * NWay autonegotiation takes the highest-order common
230 * bit of the ANAR and ANLPAR (i.e. best media advertised
231 * both by us and our link partner).
233 if ((bmsr & BMSR_ACOMP) == 0) {
234 /* Erg, still trying, I guess... */
235 mii->mii_media_active |= IFM_NONE;
239 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
241 * ANLPAR doesn't get set on my card, but we check it anyway,
242 * since it is mentioned in the 78Q2120 specs.
244 if (anlpar & ANLPAR_T4)
245 mii->mii_media_active |= IFM_100_T4;
246 else if (anlpar & ANLPAR_TX_FD)
247 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
248 else if (anlpar & ANLPAR_TX)
249 mii->mii_media_active |= IFM_100_TX;
250 else if (anlpar & ANLPAR_10_FD)
251 mii->mii_media_active |= IFM_10_T|IFM_FDX;
252 else if (anlpar & ANLPAR_10)
253 mii->mii_media_active |= IFM_10_T;
256 * ANLPAR isn't set, which leaves two possibilities:
257 * 1) Auto negotiation failed
258 * 2) Auto negotiation completed, but the card forgot
260 * So we check the MII_DIAG(18) register...
262 diag = PHY_READ(phy, MII_DIAG);
263 if (diag & DIAG_NEGFAIL) /* assume 10baseT if no neg */
264 mii->mii_media_active |= IFM_10_T;
266 if (diag & DIAG_DUPLEX)
267 mii->mii_media_active |= IFM_FDX;
268 if (diag & DIAG_RATE_100)
269 mii->mii_media_active |= IFM_100_TX;
271 mii->mii_media_active |= IFM_10_T;
275 mii->mii_media_active = ife->ifm_media;