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 internal PHY on the SMSC LAN91C111.
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 smcphy_probe(device_t);
53 static int smcphy_attach(device_t);
55 static int smcphy_service(struct mii_softc *, struct mii_data *, int);
56 static int smcphy_reset(struct mii_softc *);
57 static void smcphy_auto(struct mii_softc *);
59 static device_method_t smcphy_methods[] = {
60 /* device interface */
61 DEVMETHOD(device_probe, smcphy_probe),
62 DEVMETHOD(device_attach, smcphy_attach),
63 DEVMETHOD(device_detach, mii_phy_detach),
64 DEVMETHOD(device_shutdown, bus_generic_shutdown),
69 static devclass_t smcphy_devclass;
71 static driver_t smcphy_driver = {
74 sizeof(struct mii_softc)
77 DRIVER_MODULE(smcphy, miibus, smcphy_driver, smcphy_devclass, 0, 0);
80 smcphy_probe(device_t dev)
82 struct mii_attach_args *ma;
84 ma = device_get_ivars(dev);
86 if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_SMSC ||
87 MII_MODEL(ma->mii_id2) != MII_MODEL_SMSC_LAN83C183)
90 device_set_desc(dev, MII_STR_SMSC_LAN83C183);
96 smcphy_attach(device_t dev)
99 struct mii_attach_args *ma;
100 struct mii_data *mii;
102 sc = device_get_softc(dev);
103 ma = device_get_ivars(dev);
104 sc->mii_dev = device_get_parent(dev);
105 mii = device_get_softc(sc->mii_dev);
106 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
108 sc->mii_inst = mii->mii_instance;
109 sc->mii_phy = ma->mii_phyno;
110 sc->mii_service = smcphy_service;
115 sc->mii_flags |= MIIF_NOISOLATE;
117 if (smcphy_reset(sc) != 0) {
118 device_printf(dev, "reset failed\n");
121 /* Mask interrupts, we poll instead. */
122 PHY_WRITE(sc, 0x1e, 0xffc0);
124 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
125 device_printf(dev, " ");
129 MIIBUS_MEDIAINIT(sc->mii_dev);
130 mii_phy_setmedia(sc);
136 smcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
138 struct ifmedia_entry *ife;
141 ife = mii->mii_media.ifm_cur;
146 * If we're not polling our PHY instance, just return.
148 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
154 * If the media indicates a different PHY instance,
157 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
158 reg = PHY_READ(sc, MII_BMCR);
159 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
164 * If the interface is not up, don't do anything.
166 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
169 switch (IFM_SUBTYPE(ife->ifm_media)) {
175 mii_phy_setmedia(sc);
183 * If we're not currently selected, just return.
185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
189 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) {
193 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
197 /* I have no idea why BMCR_ISO gets set. */
198 reg = PHY_READ(sc, MII_BMCR);
199 if (reg & BMCR_ISO) {
200 PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO);
203 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
204 if (reg & BMSR_LINK) {
209 if (++sc->mii_ticks <= MII_ANEGTICKS) {
214 if (smcphy_reset(sc) != 0) {
215 device_printf(sc->mii_dev, "reset failed\n");
221 /* Update the media status. */
224 /* Callback if something changed. */
225 mii_phy_update(sc, cmd);
230 smcphy_reset(struct mii_softc *sc)
235 PHY_WRITE(sc, MII_BMCR, BMCR_RESET);
237 for (timeout = 2; timeout > 0; timeout--) {
239 bmcr = PHY_READ(sc, MII_BMCR);
240 if ((bmcr & BMCR_RESET) == 0)
244 if (bmcr & BMCR_RESET) {
248 PHY_WRITE(sc, MII_BMCR, 0x3000);
253 smcphy_auto(struct mii_softc *sc)
257 anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) |
259 if (sc->mii_flags & MIIF_DOPAUSE)
261 PHY_WRITE(sc, MII_ANAR, anar);
262 /* Apparently this helps. */
263 anar = PHY_READ(sc, MII_ANAR);
264 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);