2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2006 Benno Rice. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 * Driver for the SMSC LAN8710A
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/socket.h>
38 #include <sys/errno.h>
39 #include <sys/module.h>
41 #include <sys/malloc.h>
43 #include <machine/bus.h>
46 #include <net/if_media.h>
48 #include <dev/mii/mii.h>
49 #include <dev/mii/miivar.h>
52 #include "miibus_if.h"
54 static int smscphy_probe(device_t);
55 static int smscphy_attach(device_t);
57 static int smscphy_service(struct mii_softc *, struct mii_data *, int);
58 static void smscphy_auto(struct mii_softc *, int);
59 static void smscphy_status(struct mii_softc *);
61 static device_method_t smscphy_methods[] = {
62 /* device interface */
63 DEVMETHOD(device_probe, smscphy_probe),
64 DEVMETHOD(device_attach, smscphy_attach),
65 DEVMETHOD(device_detach, mii_phy_detach),
66 DEVMETHOD(device_shutdown, bus_generic_shutdown),
70 static devclass_t smscphy_devclass;
72 static driver_t smscphy_driver = {
75 sizeof(struct mii_softc)
78 DRIVER_MODULE(smscphy, miibus, smscphy_driver, smscphy_devclass, 0, 0);
80 static const struct mii_phydesc smscphys[] = {
81 MII_PHY_DESC(SMC, LAN8710A),
82 MII_PHY_DESC(SMC, LAN8700),
86 static const struct mii_phy_funcs smscphy_funcs = {
93 smscphy_probe(device_t dev)
96 return (mii_phy_dev_probe(dev, smscphys, BUS_PROBE_DEFAULT));
100 smscphy_attach(device_t dev)
102 struct mii_softc *sc;
103 const struct mii_phy_funcs *mpf;
105 sc = device_get_softc(dev);
106 mpf = &smscphy_funcs;
107 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, mpf, 1);
108 mii_phy_setmedia(sc);
114 smscphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
116 struct ifmedia_entry *ife;
119 ife = mii->mii_media.ifm_cur;
126 switch (IFM_SUBTYPE(ife->ifm_media)) {
128 smscphy_auto(sc, ife->ifm_media);
132 mii_phy_setmedia(sc);
139 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
143 /* I have no idea why BMCR_ISO gets set. */
144 reg = PHY_READ(sc, MII_BMCR);
145 if (reg & BMCR_ISO) {
146 PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO);
149 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
150 if (reg & BMSR_LINK) {
155 if (++sc->mii_ticks <= MII_ANEGTICKS) {
161 smscphy_auto(sc, ife->ifm_media);
165 /* Update the media status. */
168 /* Callback if something changed. */
169 mii_phy_update(sc, cmd);
174 smscphy_auto(struct mii_softc *sc, int media)
178 anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | ANAR_CSMA;
179 if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
181 PHY_WRITE(sc, MII_ANAR, anar);
182 /* Apparently this helps. */
183 anar = PHY_READ(sc, MII_ANAR);
184 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
188 smscphy_status(struct mii_softc *sc)
190 struct mii_data *mii;
191 uint32_t bmcr, bmsr, status;
194 mii->mii_media_status = IFM_AVALID;
195 mii->mii_media_active = IFM_ETHER;
197 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
198 if ((bmsr & BMSR_LINK) != 0)
199 mii->mii_media_status |= IFM_ACTIVE;
201 bmcr = PHY_READ(sc, MII_BMCR);
202 if ((bmcr & BMCR_ISO) != 0) {
203 mii->mii_media_active |= IFM_NONE;
204 mii->mii_media_status = 0;
208 if ((bmcr & BMCR_LOOP) != 0)
209 mii->mii_media_active |= IFM_LOOP;
211 if ((bmcr & BMCR_AUTOEN) != 0) {
212 if ((bmsr & BMSR_ACOMP) == 0) {
213 /* Erg, still trying, I guess... */
214 mii->mii_media_active |= IFM_NONE;
219 status = PHY_READ(sc, 0x1F);
221 mii->mii_media_active |= IFM_100_TX;
223 mii->mii_media_active |= IFM_10_T;
225 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
227 mii->mii_media_active |= IFM_HDX;