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.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
39 * $FreeBSD: src/sys/dev/mii/tlphy.c,v 1.2.2.2 2001/07/29 22:48:37 kris Exp $
40 * $DragonFly: src/sys/dev/netif/mii_layer/tlphy.c,v 1.12 2006/12/22 23:26:20 swildner Exp $
44 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
46 * Redistribution and use in source and binary forms, with or without
47 * modification, are permitted provided that the following conditions
49 * 1. Redistributions of source code must retain the above copyright
50 * notice, this list of conditions and the following disclaimer.
51 * 2. Redistributions in binary form must reproduce the above copyright
52 * notice, this list of conditions and the following disclaimer in the
53 * documentation and/or other materials provided with the distribution.
54 * 3. All advertising materials mentioning features or use of this software
55 * must display the following acknowledgement:
56 * This product includes software developed by Manuel Bouyer.
57 * 4. The name of the author may not be used to endorse or promote products
58 * derived from this software without specific prior written permission.
60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
73 * Driver for Texas Instruments's ThunderLAN PHYs
76 #include <sys/param.h>
77 #include <sys/systm.h>
78 #include <sys/kernel.h>
79 #include <sys/socket.h>
80 #include <sys/errno.h>
81 #include <sys/module.h>
83 #include <sys/malloc.h>
85 #include <machine/clock.h>
88 #include <net/if_media.h>
96 #include "miibus_if.h"
99 struct mii_softc sc_mii; /* generic PHY */
103 static int tlphy_probe (device_t);
104 static int tlphy_attach (device_t);
106 static device_method_t tlphy_methods[] = {
107 /* device interface */
108 DEVMETHOD(device_probe, tlphy_probe),
109 DEVMETHOD(device_attach, tlphy_attach),
110 DEVMETHOD(device_detach, ukphy_detach),
111 DEVMETHOD(device_shutdown, bus_generic_shutdown),
115 static const struct mii_phydesc tlphys[] = {
116 MII_PHYDESC(xxTI, TLAN10T),
120 static devclass_t tlphy_devclass;
122 static driver_t tlphy_driver = {
125 sizeof(struct tlphy_softc)
128 DRIVER_MODULE(tlphy, miibus, tlphy_driver, tlphy_devclass, 0, 0);
130 static int tlphy_service(struct mii_softc *, struct mii_data *, int);
131 static int tlphy_auto(struct tlphy_softc *, int);
132 static void tlphy_acomp(struct tlphy_softc *);
133 static void tlphy_status(struct tlphy_softc *);
136 tlphy_probe(device_t dev)
138 struct mii_attach_args *ma = device_get_ivars(dev);
139 const struct mii_phydesc *mpd;
141 mpd = mii_phy_match(ma, tlphys);
143 device_set_desc(dev, mpd->mpd_name);
150 tlphy_attach(device_t dev)
152 struct tlphy_softc *sc;
153 struct mii_attach_args *ma;
154 struct mii_data *mii;
155 const char *sep = "";
156 int capmask = 0xFFFFFFFF;
158 sc = device_get_softc(dev);
159 ma = device_get_ivars(dev);
160 mii_softc_init(&sc->sc_mii, ma);
161 sc->sc_mii.mii_dev = device_get_parent(dev);
162 mii = device_get_softc(sc->sc_mii.mii_dev);
163 LIST_INSERT_HEAD(&mii->mii_phys, &sc->sc_mii, mii_list);
165 sc->sc_mii.mii_inst = mii->mii_instance;
166 sc->sc_mii.mii_service = tlphy_service;
167 sc->sc_mii.mii_reset = mii_phy_reset;
168 sc->sc_mii.mii_pdata = mii;
170 if (mii->mii_instance) {
171 struct mii_softc *other;
175 device_get_children(sc->sc_mii.mii_dev, &devlist, &devs);
176 for (i = 0; i < devs; i++) {
177 if (strcmp(device_get_name(devlist[i]), "tlphy")) {
178 other = device_get_softc(devlist[i]);
179 capmask &= ~other->mii_capabilities;
183 kfree(devlist, M_TEMP);
188 sc->sc_mii.mii_flags &= ~MIIF_NOISOLATE;
189 mii_phy_reset(&sc->sc_mii);
190 sc->sc_mii.mii_flags |= MIIF_NOISOLATE;
193 * Note that if we're on a device that also supports 100baseTX,
194 * we are not going to want to use the built-in 10baseT port,
195 * since there will be another PHY on the MII wired up to the
196 * UTP connector. The parent indicates this to us by specifying
197 * the TLPHY_MEDIA_NO_10_T bit.
199 sc->sc_mii.mii_capabilities =
200 PHY_READ(&sc->sc_mii, MII_BMSR) & capmask /*ma->mii_capmask*/;
202 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
204 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP,
205 sc->sc_mii.mii_inst), MII_MEDIA_10_T);
207 #define PRINT(s) kprintf("%s%s", sep, s); sep = ", "
209 device_printf(dev, " ");
210 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->sc_mii.mii_inst), 0);
211 PRINT("10base2/BNC");
212 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc->sc_mii.mii_inst), 0);
213 PRINT("10base5/AUI");
215 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) {
217 mii_phy_add_media(&sc->sc_mii);
219 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst),
226 MIIBUS_MEDIAINIT(sc->sc_mii.mii_dev);
231 tlphy_service(struct mii_softc *self, struct mii_data *mii, int cmd)
233 struct tlphy_softc *sc = (struct tlphy_softc *)self;
234 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
237 if ((sc->sc_mii.mii_flags & MIIF_DOINGAUTO) == 0 && sc->sc_need_acomp)
243 * If we're not polling our PHY instance, just return.
245 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst)
251 * If the media indicates a different PHY instance,
254 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) {
255 reg = PHY_READ(&sc->sc_mii, MII_BMCR);
256 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO);
261 * If the interface is not up, don't do anything.
263 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
266 switch (IFM_SUBTYPE(ife->ifm_media)) {
269 * The ThunderLAN PHY doesn't self-configure after
270 * an autonegotiation cycle, so there's no such
271 * thing as "already in auto mode".
277 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
278 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL);
282 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0);
284 mii_phy_set_media(&sc->sc_mii);
291 * If we're not currently selected, just return.
293 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst)
297 * Is the interface even up?
299 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
303 * Only used for autonegotiation.
305 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
309 * Check to see if we have link. If we do, we don't
310 * need to restart the autonegotiation process. Read
311 * the BMSR twice in case it's latched.
313 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?!
315 reg = PHY_READ(&sc->sc_mii, MII_BMSR) |
316 PHY_READ(&sc->sc_mii, MII_BMSR);
321 * Only retry autonegotiation every mii_anegticks seconds.
323 if (++sc->sc_mii.mii_ticks <= sc->sc_mii.mii_anegticks)
326 sc->sc_mii.mii_ticks = 0;
327 mii_phy_reset(&sc->sc_mii);
328 if (tlphy_auto(sc, 0) == EJUSTRETURN)
333 /* Update the media status. */
336 /* Callback if something changed. */
337 mii_phy_update(&sc->sc_mii, cmd);
342 tlphy_status(struct tlphy_softc *sc)
344 struct mii_data *mii = sc->sc_mii.mii_pdata;
345 int bmsr, bmcr, tlctrl;
347 mii->mii_media_status = IFM_AVALID;
348 mii->mii_media_active = IFM_ETHER;
350 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR);
351 if (bmcr & BMCR_ISO) {
352 mii->mii_media_active |= IFM_NONE;
353 mii->mii_media_status = 0;
357 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL);
358 if (tlctrl & CTRL_AUISEL) {
359 mii->mii_media_status = 0;
360 mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media;
364 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) |
365 PHY_READ(&sc->sc_mii, MII_BMSR);
366 if (bmsr & BMSR_LINK)
367 mii->mii_media_status |= IFM_ACTIVE;
369 if (bmcr & BMCR_LOOP)
370 mii->mii_media_active |= IFM_LOOP;
373 * Grr, braindead ThunderLAN PHY doesn't have any way to
374 * tell which media is actually active. (Note it also
375 * doesn't self-configure after autonegotiation.) We
376 * just have to report what's in the BMCR.
379 mii->mii_media_active |= IFM_FDX;
380 mii->mii_media_active |= IFM_10_T;
384 tlphy_auto(struct tlphy_softc *sc, int waitfor)
388 switch ((error = mii_phy_auto(&sc->sc_mii, waitfor))) {
391 * Just assume we're not in full-duplex mode.
392 * XXX Check link and try AUI/BNC?
394 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
398 /* Flag that we need to program when it completes. */
399 sc->sc_need_acomp = 1;
410 tlphy_acomp(struct tlphy_softc *sc)
414 sc->sc_need_acomp = 0;
417 * Grr, braindead ThunderLAN PHY doesn't self-configure
418 * after autonegotiation. We have to do it ourselves
419 * based on the link partner status.
422 aner = PHY_READ(&sc->sc_mii, MII_ANER);
423 if (aner & ANER_LPAN) {
424 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) &
425 PHY_READ(&sc->sc_mii, MII_ANAR);
426 if (anlpar & ANAR_10_FD) {
427 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX);
431 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);