1 /* $NetBSD: tlphy.c,v 1.18 1999/05/14 11:40:28 drochner Exp $ */
4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
57 #include <sys/cdefs.h>
58 __FBSDID("$FreeBSD$");
61 * Driver for Texas Instruments's ThunderLAN PHYs
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/kernel.h>
67 #include <sys/socket.h>
68 #include <sys/errno.h>
69 #include <sys/module.h>
71 #include <sys/malloc.h>
73 #include <machine/bus.h>
76 #include <net/if_media.h>
78 #include <dev/mii/mii.h>
79 #include <dev/mii/miivar.h>
82 #include <dev/mii/tlphyreg.h>
84 #include "miibus_if.h"
87 struct mii_softc sc_mii; /* generic PHY */
91 static int tlphy_probe(device_t);
92 static int tlphy_attach(device_t);
94 static device_method_t tlphy_methods[] = {
95 /* device interface */
96 DEVMETHOD(device_probe, tlphy_probe),
97 DEVMETHOD(device_attach, tlphy_attach),
98 DEVMETHOD(device_detach, mii_phy_detach),
99 DEVMETHOD(device_shutdown, bus_generic_shutdown),
103 static devclass_t tlphy_devclass;
105 static driver_t tlphy_driver = {
108 sizeof(struct tlphy_softc)
111 DRIVER_MODULE(tlphy, miibus, tlphy_driver, tlphy_devclass, 0, 0);
113 static int tlphy_service(struct mii_softc *, struct mii_data *, int);
114 static int tlphy_auto(struct tlphy_softc *);
115 static void tlphy_acomp(struct tlphy_softc *);
116 static void tlphy_status(struct mii_softc *);
118 static const struct mii_phydesc tlphys[] = {
119 MII_PHY_DESC(TI, TLAN10T),
123 static const struct mii_phy_funcs tlphy_funcs = {
130 tlphy_probe(device_t dev)
133 if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))),
136 return (mii_phy_dev_probe(dev, tlphys, BUS_PROBE_DEFAULT));
140 tlphy_attach(device_t dev)
143 struct mii_softc *other, *sc_mii;
144 const char *sep = "";
145 int capmask, devs, i;
147 sc_mii = device_get_softc(dev);
149 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &tlphy_funcs, 0);
152 * Note that if we're on a device that also supports 100baseTX,
153 * we are not going to want to use the built-in 10baseT port,
154 * since there will be another PHY on the MII wired up to the
157 capmask = BMSR_DEFCAPMASK;
158 if (sc_mii->mii_inst &&
159 device_get_children(sc_mii->mii_dev, &devlist, &devs) == 0) {
160 for (i = 0; i < devs; i++) {
161 if (devlist[i] != dev) {
162 other = device_get_softc(devlist[i]);
163 capmask &= ~other->mii_capabilities;
167 free(devlist, M_TEMP);
172 sc_mii->mii_capabilities = PHY_READ(sc_mii, MII_BMSR) & capmask;
175 ifmedia_add(&sc_mii->mii_pdata->mii_media, (m), (c), NULL)
176 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
178 if ((sc_mii->mii_flags & (MIIF_MACPRIV0 | MIIF_MACPRIV1)) != 0 &&
179 (sc_mii->mii_capabilities & BMSR_MEDIAMASK) != 0)
180 device_printf(dev, " ");
181 if ((sc_mii->mii_flags & MIIF_MACPRIV0) != 0) {
182 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc_mii->mii_inst),
184 PRINT("10base2/BNC");
186 if ((sc_mii->mii_flags & MIIF_MACPRIV1) != 0) {
187 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc_mii->mii_inst),
189 PRINT("10base5/AUI");
191 if ((sc_mii->mii_capabilities & BMSR_MEDIAMASK) != 0) {
193 mii_phy_add_media(sc_mii);
195 if ((sc_mii->mii_flags & (MIIF_MACPRIV0 | MIIF_MACPRIV1)) != 0 &&
196 (sc_mii->mii_capabilities & BMSR_MEDIAMASK) != 0)
201 MIIBUS_MEDIAINIT(sc_mii->mii_dev);
206 tlphy_service(struct mii_softc *self, struct mii_data *mii, int cmd)
208 struct tlphy_softc *sc = (struct tlphy_softc *)self;
209 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
212 if (sc->sc_need_acomp)
221 * If the interface is not up, don't do anything.
223 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
226 switch (IFM_SUBTYPE(ife->ifm_media)) {
229 * The ThunderLAN PHY doesn't self-configure after
230 * an autonegotiation cycle, so there's no such
231 * thing as "already in auto mode".
233 (void)tlphy_auto(sc);
237 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
238 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL);
242 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0);
244 mii_phy_setmedia(&sc->sc_mii);
250 * Is the interface even up?
252 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
256 * Only used for autonegotiation.
258 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
262 * Check to see if we have link. If we do, we don't
263 * need to restart the autonegotiation process. Read
264 * the BMSR twice in case it's latched.
266 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?!
268 reg = PHY_READ(&sc->sc_mii, MII_BMSR) |
269 PHY_READ(&sc->sc_mii, MII_BMSR);
274 * Only retry autonegotiation every 5 seconds.
276 if (++sc->sc_mii.mii_ticks <= MII_ANEGTICKS)
279 sc->sc_mii.mii_ticks = 0;
280 PHY_RESET(&sc->sc_mii);
281 (void)tlphy_auto(sc);
285 /* Update the media status. */
288 /* Callback if something changed. */
289 mii_phy_update(&sc->sc_mii, cmd);
294 tlphy_status(struct mii_softc *self)
296 struct tlphy_softc *sc = (struct tlphy_softc *)self;
297 struct mii_data *mii = sc->sc_mii.mii_pdata;
298 int bmsr, bmcr, tlctrl;
300 mii->mii_media_status = IFM_AVALID;
301 mii->mii_media_active = IFM_ETHER;
303 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR);
304 if (bmcr & BMCR_ISO) {
305 mii->mii_media_active |= IFM_NONE;
306 mii->mii_media_status = 0;
310 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL);
311 if (tlctrl & CTRL_AUISEL) {
312 mii->mii_media_status = 0;
313 mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media;
317 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) |
318 PHY_READ(&sc->sc_mii, MII_BMSR);
319 if (bmsr & BMSR_LINK)
320 mii->mii_media_status |= IFM_ACTIVE;
322 if (bmcr & BMCR_LOOP)
323 mii->mii_media_active |= IFM_LOOP;
326 * Grr, braindead ThunderLAN PHY doesn't have any way to
327 * tell which media is actually active. (Note it also
328 * doesn't self-configure after autonegotiation.) We
329 * just have to report what's in the BMCR.
332 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(self);
334 mii->mii_media_active |= IFM_HDX;
335 mii->mii_media_active |= IFM_10_T;
339 tlphy_auto(struct tlphy_softc *sc)
343 switch ((error = mii_phy_auto(&sc->sc_mii))) {
346 * Just assume we're not in full-duplex mode.
347 * XXX Check link and try AUI/BNC?
349 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
353 /* Flag that we need to program when it completes. */
354 sc->sc_need_acomp = 1;
365 tlphy_acomp(struct tlphy_softc *sc)
369 sc->sc_need_acomp = 0;
372 * Grr, braindead ThunderLAN PHY doesn't self-configure
373 * after autonegotiation. We have to do it ourselves
374 * based on the link partner status.
377 aner = PHY_READ(&sc->sc_mii, MII_ANER);
378 if (aner & ANER_LPAN) {
379 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) &
380 PHY_READ(&sc->sc_mii, MII_ANAR);
381 if (anlpar & ANAR_10_FD) {
382 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX);
386 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);