2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2001-2003, Shunsuke Akiyama <akiyama@FreeBSD.org>.
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 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
34 * driver for RealTek RTL8150 internal PHY
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/module.h>
42 #include <sys/socket.h>
46 #include <net/if_arp.h>
47 #include <net/if_media.h>
49 #include <dev/mii/mii.h>
50 #include <dev/mii/miivar.h>
53 #include <dev/usb/net/ruephyreg.h>
55 #include "miibus_if.h"
57 static int ruephy_probe(device_t);
58 static int ruephy_attach(device_t);
60 static device_method_t ruephy_methods[] = {
61 /* device interface */
62 DEVMETHOD(device_probe, ruephy_probe),
63 DEVMETHOD(device_attach, ruephy_attach),
64 DEVMETHOD(device_detach, mii_phy_detach),
65 DEVMETHOD(device_shutdown, bus_generic_shutdown),
69 static devclass_t ruephy_devclass;
71 static driver_t ruephy_driver = {
73 .methods = ruephy_methods,
74 .size = sizeof(struct mii_softc)
77 DRIVER_MODULE(ruephy, miibus, ruephy_driver, ruephy_devclass, 0, 0);
79 static int ruephy_service(struct mii_softc *, struct mii_data *, int);
80 static void ruephy_reset(struct mii_softc *);
81 static void ruephy_status(struct mii_softc *);
84 * The RealTek RTL8150 internal PHY doesn't have vendor/device ID
85 * registers; rue(4) fakes up a return value of all zeros.
87 static const struct mii_phydesc ruephys[] = {
88 { 0, 0, "RealTek RTL8150 internal media interface" },
92 static const struct mii_phy_funcs ruephy_funcs = {
99 ruephy_probe(device_t dev)
102 if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))),
104 return (mii_phy_dev_probe(dev, ruephys, BUS_PROBE_DEFAULT));
109 ruephy_attach(device_t dev)
112 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
118 ruephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
120 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
128 mii_phy_setmedia(sc);
133 * Only used for autonegotiation.
135 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
139 * Check to see if we have link. If we do, we don't
140 * need to restart the autonegotiation process. Read
141 * the MSR twice in case it's latched.
143 reg = PHY_READ(sc, RUEPHY_MII_MSR) |
144 PHY_READ(sc, RUEPHY_MII_MSR);
145 if (reg & RUEPHY_MSR_LINK)
148 /* Only retry autonegotiation every mii_anegticks seconds. */
149 if (sc->mii_ticks <= sc->mii_anegticks)
154 if (mii_phy_auto(sc) == EJUSTRETURN)
159 /* Update the media status. */
162 /* Callback if something changed. */
163 mii_phy_update(sc, cmd);
169 ruephy_reset(struct mii_softc *sc)
175 * XXX RealTek RTL8150 PHY doesn't set the BMCR properly after
176 * XXX reset, which breaks autonegotiation.
178 PHY_WRITE(sc, MII_BMCR, (BMCR_S100 | BMCR_AUTOEN | BMCR_FDX));
182 ruephy_status(struct mii_softc *phy)
184 struct mii_data *mii = phy->mii_pdata;
185 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
188 mii->mii_media_status = IFM_AVALID;
189 mii->mii_media_active = IFM_ETHER;
191 msr = PHY_READ(phy, RUEPHY_MII_MSR) | PHY_READ(phy, RUEPHY_MII_MSR);
192 if (msr & RUEPHY_MSR_LINK)
193 mii->mii_media_status |= IFM_ACTIVE;
195 bmcr = PHY_READ(phy, MII_BMCR);
196 if (bmcr & BMCR_ISO) {
197 mii->mii_media_active |= IFM_NONE;
198 mii->mii_media_status = 0;
202 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
203 if (bmcr & BMCR_AUTOEN) {
204 if ((bmsr & BMSR_ACOMP) == 0) {
205 /* Erg, still trying, I guess... */
206 mii->mii_media_active |= IFM_NONE;
210 if (msr & RUEPHY_MSR_SPEED100)
211 mii->mii_media_active |= IFM_100_TX;
213 mii->mii_media_active |= IFM_10_T;
215 if (msr & RUEPHY_MSR_DUPLEX)
216 mii->mii_media_active |=
217 IFM_FDX | mii_phy_flowstatus(phy);
219 mii->mii_media_active |= IFM_HDX;
221 mii->mii_media_active = ife->ifm_media;