2 * Copyright (c) 2001-2003, Shunsuke Akiyama <akiyama@FreeBSD.org>.
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 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
32 * driver for RealTek RTL8150 internal PHY
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/malloc.h>
39 #include <sys/module.h>
40 #include <sys/socket.h>
44 #include <net/if_arp.h>
45 #include <net/if_media.h>
47 #include <dev/mii/mii.h>
48 #include <dev/mii/miivar.h>
51 #include <dev/usb/net/ruephyreg.h>
53 #include "miibus_if.h"
55 static int ruephy_probe(device_t);
56 static int ruephy_attach(device_t);
58 static device_method_t ruephy_methods[] = {
59 /* device interface */
60 DEVMETHOD(device_probe, ruephy_probe),
61 DEVMETHOD(device_attach, ruephy_attach),
62 DEVMETHOD(device_detach, mii_phy_detach),
63 DEVMETHOD(device_shutdown, bus_generic_shutdown),
67 static devclass_t ruephy_devclass;
69 static driver_t ruephy_driver = {
72 sizeof(struct mii_softc)
75 DRIVER_MODULE(ruephy, miibus, ruephy_driver, ruephy_devclass, 0, 0);
77 static int ruephy_service(struct mii_softc *, struct mii_data *, int);
78 static void ruephy_reset(struct mii_softc *);
79 static void ruephy_status(struct mii_softc *);
82 * The RealTek RTL8150 internal PHY doesn't have vendor/device ID
83 * registers; rue(4) fakes up a return value of all zeros.
85 static const struct mii_phydesc ruephys[] = {
86 { 0, 0, "RealTek RTL8150 internal media interface" },
90 static const struct mii_phy_funcs ruephy_funcs = {
97 ruephy_probe(device_t dev)
100 if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))),
102 return (mii_phy_dev_probe(dev, ruephys, BUS_PROBE_DEFAULT));
107 ruephy_attach(device_t dev)
110 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
116 ruephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
118 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
127 * If the interface is not up, don't do anything.
129 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
132 mii_phy_setmedia(sc);
137 * Is the interface even up?
139 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
143 * Only used for autonegotiation.
145 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
149 * Check to see if we have link. If we do, we don't
150 * need to restart the autonegotiation process. Read
151 * the MSR twice in case it's latched.
153 reg = PHY_READ(sc, RUEPHY_MII_MSR) |
154 PHY_READ(sc, RUEPHY_MII_MSR);
155 if (reg & RUEPHY_MSR_LINK)
158 /* Only retry autonegotiation every mii_anegticks seconds. */
159 if (sc->mii_ticks <= sc->mii_anegticks)
164 if (mii_phy_auto(sc) == EJUSTRETURN)
169 /* Update the media status. */
172 /* Callback if something changed. */
173 mii_phy_update(sc, cmd);
179 ruephy_reset(struct mii_softc *sc)
185 * XXX RealTek RTL8150 PHY doesn't set the BMCR properly after
186 * XXX reset, which breaks autonegotiation.
188 PHY_WRITE(sc, MII_BMCR, (BMCR_S100 | BMCR_AUTOEN | BMCR_FDX));
192 ruephy_status(struct mii_softc *phy)
194 struct mii_data *mii = phy->mii_pdata;
195 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
198 mii->mii_media_status = IFM_AVALID;
199 mii->mii_media_active = IFM_ETHER;
201 msr = PHY_READ(phy, RUEPHY_MII_MSR) | PHY_READ(phy, RUEPHY_MII_MSR);
202 if (msr & RUEPHY_MSR_LINK)
203 mii->mii_media_status |= IFM_ACTIVE;
205 bmcr = PHY_READ(phy, MII_BMCR);
206 if (bmcr & BMCR_ISO) {
207 mii->mii_media_active |= IFM_NONE;
208 mii->mii_media_status = 0;
212 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
213 if (bmcr & BMCR_AUTOEN) {
214 if ((bmsr & BMSR_ACOMP) == 0) {
215 /* Erg, still trying, I guess... */
216 mii->mii_media_active |= IFM_NONE;
220 if (msr & RUEPHY_MSR_SPEED100)
221 mii->mii_media_active |= IFM_100_TX;
223 mii->mii_media_active |= IFM_10_T;
225 if (msr & RUEPHY_MSR_DUPLEX)
226 mii->mii_media_active |=
227 IFM_FDX | mii_phy_flowstatus(phy);
229 mii->mii_media_active |= IFM_HDX;
231 mii->mii_media_active = ife->ifm_media;