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 <machine/bus.h>
52 #include <dev/mii/ruephyreg.h>
54 #include "miibus_if.h"
56 static int ruephy_probe(device_t);
57 static int ruephy_attach(device_t);
59 static device_method_t ruephy_methods[] = {
60 /* device interface */
61 DEVMETHOD(device_probe, ruephy_probe),
62 DEVMETHOD(device_attach, ruephy_attach),
63 DEVMETHOD(device_detach, mii_phy_detach),
64 DEVMETHOD(device_shutdown, bus_generic_shutdown),
68 static devclass_t ruephy_devclass;
70 static driver_t ruephy_driver = {
73 sizeof(struct mii_softc)
76 DRIVER_MODULE(ruephy, miibus, ruephy_driver, ruephy_devclass, 0, 0);
78 static int ruephy_service(struct mii_softc *, struct mii_data *, int);
79 static void ruephy_reset(struct mii_softc *);
80 static void ruephy_status(struct mii_softc *);
83 * The RealTek RTL8150 internal PHY doesn't have vendor/device ID
84 * registers; rue(4) fakes up a return value of all zeros.
86 static const struct mii_phydesc ruephys[] = {
87 { 0, 0, "RealTek RTL8150 internal media interface" },
92 ruephy_probe(device_t dev)
95 if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))),
97 return (mii_phy_dev_probe(dev, ruephys, BUS_PROBE_DEFAULT));
102 ruephy_attach(device_t dev)
104 struct mii_softc *sc;
105 struct mii_attach_args *ma;
106 struct mii_data *mii;
108 sc = device_get_softc(dev);
109 ma = device_get_ivars(dev);
110 sc->mii_dev = device_get_parent(dev);
111 mii = device_get_softc(sc->mii_dev);
114 * The RealTek PHY can never be isolated, so never allow non-zero
117 if (mii->mii_instance != 0) {
118 device_printf(dev, "ignoring this PHY, non-zero instance\n");
122 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
124 sc->mii_inst = mii->mii_instance;
125 sc->mii_phy = ma->mii_phyno;
126 sc->mii_service = ruephy_service;
131 * Apparently, we can't neither isolate nor do loopback on this PHY.
133 sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP;
137 sc->mii_capabilities =
138 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
139 device_printf(dev, " ");
140 mii_phy_add_media(sc);
143 MIIBUS_MEDIAINIT(sc->mii_dev);
148 ruephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
150 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
154 * We can't isolate the RealTek RTL8150 PHY,
155 * so it has to be the only one!
157 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
158 panic("ruephy_service: can't isolate RealTek RTL8150 PHY");
166 * If the interface is not up, don't do anything.
168 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
171 mii_phy_setmedia(sc);
176 * Is the interface even up?
178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
182 * Only used for autonegotiation.
184 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
188 * Check to see if we have link. If we do, we don't
189 * need to restart the autonegotiation process. Read
190 * the MSR twice in case it's latched.
192 reg = PHY_READ(sc, RUEPHY_MII_MSR) |
193 PHY_READ(sc, RUEPHY_MII_MSR);
194 if (reg & RUEPHY_MSR_LINK)
198 * Only retry autonegotiation every 5 seconds.
200 if (++sc->mii_ticks <= MII_ANEGTICKS)
205 if (mii_phy_auto(sc) == EJUSTRETURN)
210 /* Update the media status. */
213 /* Callback if something changed. */
214 mii_phy_update(sc, cmd);
220 ruephy_reset(struct mii_softc *sc)
226 * XXX RealTek RTL8150 PHY doesn't set the BMCR properly after
227 * XXX reset, which breaks autonegotiation.
229 PHY_WRITE(sc, MII_BMCR, (BMCR_S100 | BMCR_AUTOEN | BMCR_FDX));
233 ruephy_status(struct mii_softc *phy)
235 struct mii_data *mii = phy->mii_pdata;
236 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
239 mii->mii_media_status = IFM_AVALID;
240 mii->mii_media_active = IFM_ETHER;
242 msr = PHY_READ(phy, RUEPHY_MII_MSR) | PHY_READ(phy, RUEPHY_MII_MSR);
243 if (msr & RUEPHY_MSR_LINK)
244 mii->mii_media_status |= IFM_ACTIVE;
246 bmcr = PHY_READ(phy, MII_BMCR);
247 if (bmcr & BMCR_ISO) {
248 mii->mii_media_active |= IFM_NONE;
249 mii->mii_media_status = 0;
253 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
254 if (bmcr & BMCR_AUTOEN) {
255 if ((bmsr & BMSR_ACOMP) == 0) {
256 /* Erg, still trying, I guess... */
257 mii->mii_media_active |= IFM_NONE;
261 if (msr & RUEPHY_MSR_SPEED100)
262 mii->mii_media_active |= IFM_100_TX;
264 mii->mii_media_active |= IFM_10_T;
266 if (msr & RUEPHY_MSR_DUPLEX)
267 mii->mii_media_active |= IFM_FDX;
269 mii->mii_media_active = ife->ifm_media;