2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2000,2001 Jonathan Chen.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 * Driver for the TDK 78Q2120 MII
38 * Datasheet for the 78Q2120 - http://www.tsc.tdk.com/lan/78q2120.pdf
39 * Most of this code stolen from ukphy.c
43 * The TDK 78Q2120 is found on some Xircom X3201 based CardBus cards,
44 * also spotted on some 3C575 cards. It's just like any other normal
45 * phy, except it does auto negotiation in a different way.
48 #include <sys/param.h>
49 #include <sys/systm.h>
50 #include <sys/kernel.h>
51 #include <sys/socket.h>
52 #include <sys/errno.h>
53 #include <sys/module.h>
57 #include <net/if_media.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(xxTSC, 78Q2120),
97 static const struct mii_phy_funcs tdkphy_funcs = {
104 tdkphy_probe(device_t dev)
107 return (mii_phy_dev_probe(dev, tdkphys, BUS_PROBE_DEFAULT));
111 tdkphy_attach(device_t dev)
114 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &tdkphy_funcs, 1);
119 tdkphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
127 mii_phy_setmedia(sc);
131 if (mii_phy_tick(sc) == EJUSTRETURN)
136 /* Update the media status. */
138 if (sc->mii_pdata->mii_media_active & IFM_FDX)
139 PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) | BMCR_FDX);
141 PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) & ~BMCR_FDX);
143 /* Callback if something changed. */
144 mii_phy_update(sc, cmd);
149 tdkphy_status(struct mii_softc *phy)
151 struct mii_data *mii = phy->mii_pdata;
152 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
153 int bmsr, bmcr, anlpar, diag;
155 mii->mii_media_status = IFM_AVALID;
156 mii->mii_media_active = IFM_ETHER;
158 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
159 if (bmsr & BMSR_LINK)
160 mii->mii_media_status |= IFM_ACTIVE;
162 bmcr = PHY_READ(phy, MII_BMCR);
163 if (bmcr & BMCR_ISO) {
164 mii->mii_media_active |= IFM_NONE;
165 mii->mii_media_status = 0;
169 if (bmcr & BMCR_LOOP)
170 mii->mii_media_active |= IFM_LOOP;
172 if (bmcr & BMCR_AUTOEN) {
174 * NWay autonegotiation takes the highest-order common
175 * bit of the ANAR and ANLPAR (i.e. best media advertised
176 * both by us and our link partner).
178 if ((bmsr & BMSR_ACOMP) == 0) {
179 /* Erg, still trying, I guess... */
180 mii->mii_media_active |= IFM_NONE;
184 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
186 * ANLPAR doesn't get set on my card, but we check it anyway,
187 * since it is mentioned in the 78Q2120 specs.
189 if (anlpar & ANLPAR_TX_FD)
190 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
191 else if (anlpar & ANLPAR_T4)
192 mii->mii_media_active |= IFM_100_T4|IFM_HDX;
193 else if (anlpar & ANLPAR_TX)
194 mii->mii_media_active |= IFM_100_TX|IFM_HDX;
195 else if (anlpar & ANLPAR_10_FD)
196 mii->mii_media_active |= IFM_10_T|IFM_FDX;
197 else if (anlpar & ANLPAR_10)
198 mii->mii_media_active |= IFM_10_T|IFM_HDX;
201 * ANLPAR isn't set, which leaves two possibilities:
202 * 1) Auto negotiation failed
203 * 2) Auto negotiation completed, but the card forgot
205 * So we check the MII_DIAG(18) register...
207 diag = PHY_READ(phy, MII_DIAG);
208 if (diag & DIAG_NEGFAIL) /* assume 10baseT if no neg */
209 mii->mii_media_active |= IFM_10_T|IFM_HDX;
211 if (diag & DIAG_DUPLEX)
212 mii->mii_media_active |= IFM_FDX;
214 mii->mii_media_active |= IFM_HDX;
215 if (diag & DIAG_RATE_100)
216 mii->mii_media_active |= IFM_100_TX;
218 mii->mii_media_active |= IFM_10_T;
221 if ((mii->mii_media_active & IFM_FDX) != 0)
222 mii->mii_media_active |= mii_phy_flowstatus(phy);
224 mii->mii_media_active = ife->ifm_media;