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
26 * $FreeBSD: src/sys/dev/mii/ruephy.c,v 1.1.4.1 2003/07/30 13:57:35 akiyama Exp $
27 * $DragonFly: src/sys/dev/netif/mii_layer/ruephy.c,v 1.4 2005/11/05 10:01:54 sephe Exp $
31 * driver for RealTek RTL8150 internal PHY
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/malloc.h>
38 #include <sys/socket.h>
42 #include <net/if_media.h>
44 #include <dev/netif/mii_layer/mii.h>
45 #include <dev/netif/mii_layer/miivar.h>
46 #include <dev/netif/mii_layer/ruephyreg.h>
48 #include "miibus_if.h"
50 static int ruephy_probe(device_t);
51 static int ruephy_attach(device_t);
52 static int ruephy_detach(device_t);
54 static device_method_t ruephy_methods[] = {
55 /* device interface */
56 DEVMETHOD(device_probe, ruephy_probe),
57 DEVMETHOD(device_attach, ruephy_attach),
58 DEVMETHOD(device_detach, ruephy_detach),
59 DEVMETHOD(device_shutdown, bus_generic_shutdown),
63 static devclass_t ruephy_devclass;
65 static driver_t ruephy_driver = {
68 sizeof(struct mii_softc)
71 DRIVER_MODULE(ruephy, miibus, ruephy_driver, ruephy_devclass, 0, 0);
73 static int ruephy_service(struct mii_softc *, struct mii_data *, int);
74 static void ruephy_reset(struct mii_softc *);
75 static void ruephy_status(struct mii_softc *);
78 ruephy_probe(device_t dev)
80 struct mii_attach_args *ma;
83 ma = device_get_ivars(dev);
84 parent = device_get_parent(device_get_parent(dev));
87 * RealTek RTL8150 PHY doesn't have vendor/device ID registers:
88 * the rue driver fakes up a return value of all zeros.
90 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
91 MII_MODEL(ma->mii_id2) != 0)
95 * Make sure the parent is an 'rue'.
97 if (strcmp(device_get_name(parent), "rue") != 0)
100 device_set_desc(dev, "RealTek RTL8150 internal media interface");
106 ruephy_attach(device_t dev)
108 struct mii_softc *sc;
109 struct mii_attach_args *ma;
110 struct mii_data *mii;
112 sc = device_get_softc(dev);
113 ma = device_get_ivars(dev);
114 mii_softc_init(sc, ma);
115 sc->mii_dev = device_get_parent(dev);
116 mii = device_get_softc(sc->mii_dev);
119 * The RealTek PHY can never be isolated, so never allow non-zero
122 if (mii->mii_instance != 0) {
123 device_printf(dev, "ignoring this PHY, non-zero instance\n");
127 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
129 sc->mii_inst = mii->mii_instance;
130 sc->mii_service = ruephy_service;
134 sc->mii_flags |= MIIF_NOISOLATE;
138 sc->mii_capabilities =
139 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
140 device_printf(dev, " ");
141 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
142 printf("no media present");
144 mii_add_media(sc, sc->mii_capabilities);
147 MIIBUS_MEDIAINIT(sc->mii_dev);
152 ruephy_detach(device_t dev)
154 struct mii_softc *sc;
155 struct mii_data *mii;
157 sc = device_get_softc(dev);
158 mii = device_get_softc(device_get_softc(dev));
159 mii_phy_auto_stop(sc);
161 LIST_REMOVE(sc, mii_list);
167 ruephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
173 * We can't isolate the RealTek RTL8150 PHY,
174 * so it has to be the only one!
176 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
177 panic("ruephy_service: can't isolate RealTek RTL8150 PHY");
185 * If the interface is not up, don't do anything.
187 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
190 switch (IFM_SUBTYPE(ife->ifm_media)) {
193 * If we're already in auto mode, just return.
195 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
197 (void) mii_phy_auto(sc, 1);
201 * XXX Not supported as a manual setting right now.
206 * BMCR data is stored in the ifmedia entry.
208 PHY_WRITE(sc, MII_ANAR,
209 mii_anar(ife->ifm_media));
210 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
216 * Is the interface even up?
218 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
222 * Only used for autonegotiation.
224 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
228 * Check to see if we have link. If we do, we don't
229 * need to restart the autonegotiation process. Read
230 * the MSR twice in case it's latched.
232 reg = PHY_READ(sc, RUEPHY_MII_MSR) |
233 PHY_READ(sc, RUEPHY_MII_MSR);
234 if (reg & RUEPHY_MSR_LINK)
238 * Only retry autonegotiation every 5 seconds.
240 if (++sc->mii_ticks != 5)
245 if (mii_phy_auto(sc, 0) == EJUSTRETURN)
250 /* Update the media status. */
253 /* Callback if something changed. */
254 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
255 MIIBUS_STATCHG(sc->mii_dev);
256 sc->mii_active = mii->mii_media_active;
263 ruephy_reset(struct mii_softc *sc)
269 * XXX RealTek RTL8150 PHY doesn't set the BMCR properly after
270 * XXX reset, which breaks autonegotiation.
272 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN);
276 ruephy_status(struct mii_softc *phy)
278 struct mii_data *mii = phy->mii_pdata;
281 mii->mii_media_status = IFM_AVALID;
282 mii->mii_media_active = IFM_ETHER;
284 msr = PHY_READ(phy, RUEPHY_MII_MSR) | PHY_READ(phy, RUEPHY_MII_MSR);
285 if (msr & RUEPHY_MSR_LINK)
286 mii->mii_media_status |= IFM_ACTIVE;
288 bmcr = PHY_READ(phy, MII_BMCR);
289 if (bmcr & BMCR_ISO) {
290 mii->mii_media_active |= IFM_NONE;
291 mii->mii_media_status = 0;
295 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
297 if (bmcr & BMCR_AUTOEN) {
298 if ((bmsr & BMSR_ACOMP) == 0) {
299 /* Erg, still trying, I guess... */
300 mii->mii_media_active |= IFM_NONE;
304 if (msr & RUEPHY_MSR_SPEED100)
305 mii->mii_media_active |= IFM_100_TX;
307 mii->mii_media_active |= IFM_10_T;
309 if (msr & RUEPHY_MSR_DUPLEX)
310 mii->mii_media_active |= IFM_FDX;
312 mii->mii_media_active = mii_media_from_bmcr(bmcr);