2 * Copyright (c) 2006 Benno Rice. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 #include <sys/cdefs.h>
26 __FBSDID("$FreeBSD$");
29 * Driver for the SMSC LAN8710A
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/socket.h>
36 #include <sys/errno.h>
37 #include <sys/module.h>
39 #include <sys/malloc.h>
41 #include <machine/bus.h>
44 #include <net/if_media.h>
46 #include <dev/mii/mii.h>
47 #include <dev/mii/miivar.h>
50 #include "miibus_if.h"
52 static int smscphy_probe(device_t);
53 static int smscphy_attach(device_t);
55 static int smscphy_service(struct mii_softc *, struct mii_data *, int);
56 static void smscphy_auto(struct mii_softc *, int);
57 static void smscphy_status(struct mii_softc *);
59 static device_method_t smscphy_methods[] = {
60 /* device interface */
61 DEVMETHOD(device_probe, smscphy_probe),
62 DEVMETHOD(device_attach, smscphy_attach),
63 DEVMETHOD(device_detach, mii_phy_detach),
64 DEVMETHOD(device_shutdown, bus_generic_shutdown),
68 static devclass_t smscphy_devclass;
70 static driver_t smscphy_driver = {
73 sizeof(struct mii_softc)
76 DRIVER_MODULE(smscphy, miibus, smscphy_driver, smscphy_devclass, 0, 0);
78 static const struct mii_phydesc smscphys[] = {
79 MII_PHY_DESC(SMC, LAN8710A),
83 static const struct mii_phy_funcs smscphy_funcs = {
90 smscphy_probe(device_t dev)
93 return (mii_phy_dev_probe(dev, smscphys, BUS_PROBE_DEFAULT));
97 smscphy_attach(device_t dev)
100 const struct mii_phy_funcs *mpf;
102 sc = device_get_softc(dev);
103 mpf = &smscphy_funcs;
104 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, mpf, 1);
105 mii_phy_setmedia(sc);
111 smscphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
113 struct ifmedia_entry *ife;
116 ife = mii->mii_media.ifm_cur;
123 switch (IFM_SUBTYPE(ife->ifm_media)) {
125 smscphy_auto(sc, ife->ifm_media);
129 mii_phy_setmedia(sc);
136 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
140 /* I have no idea why BMCR_ISO gets set. */
141 reg = PHY_READ(sc, MII_BMCR);
142 if (reg & BMCR_ISO) {
143 PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO);
146 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
147 if (reg & BMSR_LINK) {
152 if (++sc->mii_ticks <= MII_ANEGTICKS) {
158 smscphy_auto(sc, ife->ifm_media);
162 /* Update the media status. */
165 /* Callback if something changed. */
166 mii_phy_update(sc, cmd);
171 smscphy_auto(struct mii_softc *sc, int media)
175 anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | ANAR_CSMA;
176 if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
178 PHY_WRITE(sc, MII_ANAR, anar);
179 /* Apparently this helps. */
180 anar = PHY_READ(sc, MII_ANAR);
181 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
185 smscphy_status(struct mii_softc *sc)
187 struct mii_data *mii;
188 uint32_t bmcr, bmsr, status;
191 mii->mii_media_status = IFM_AVALID;
192 mii->mii_media_active = IFM_ETHER;
194 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
195 if ((bmsr & BMSR_LINK) != 0)
196 mii->mii_media_status |= IFM_ACTIVE;
198 bmcr = PHY_READ(sc, MII_BMCR);
199 if ((bmcr & BMCR_ISO) != 0) {
200 mii->mii_media_active |= IFM_NONE;
201 mii->mii_media_status = 0;
205 if ((bmcr & BMCR_LOOP) != 0)
206 mii->mii_media_active |= IFM_LOOP;
208 if ((bmcr & BMCR_AUTOEN) != 0) {
209 if ((bmsr & BMSR_ACOMP) == 0) {
210 /* Erg, still trying, I guess... */
211 mii->mii_media_active |= IFM_NONE;
216 status = PHY_READ(sc, 0x1F);
218 mii->mii_media_active |= IFM_100_TX;
220 mii->mii_media_active |= IFM_10_T;
222 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
224 mii->mii_media_active |= IFM_HDX;