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.
41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. All advertising materials mentioning features or use of this software
52 * must display the following acknowledgement:
53 * This product includes software developed by Manuel Bouyer.
54 * 4. The name of the author may not be used to endorse or promote products
55 * derived from this software without specific prior written permission.
57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69 #include <sys/cdefs.h>
70 __FBSDID("$FreeBSD$");
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/bus.h>
88 #include <net/if_media.h>
90 #include <dev/mii/mii.h>
91 #include <dev/mii/miivar.h>
94 #include <dev/mii/tlphyreg.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, mii_phy_detach),
111 DEVMETHOD(device_shutdown, bus_generic_shutdown),
115 static devclass_t tlphy_devclass;
117 static driver_t tlphy_driver = {
120 sizeof(struct tlphy_softc)
123 DRIVER_MODULE(tlphy, miibus, tlphy_driver, tlphy_devclass, 0, 0);
125 static int tlphy_service(struct mii_softc *, struct mii_data *, int);
126 static int tlphy_auto(struct tlphy_softc *);
127 static void tlphy_acomp(struct tlphy_softc *);
128 static void tlphy_status(struct tlphy_softc *);
131 tlphy_probe(device_t dev)
133 struct mii_attach_args *ma;
135 ma = device_get_ivars(dev);
137 if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxTI ||
138 MII_MODEL(ma->mii_id2) != MII_MODEL_xxTI_TLAN10T)
141 device_set_desc(dev, MII_STR_xxTI_TLAN10T);
147 tlphy_attach(device_t dev)
149 struct tlphy_softc *sc;
150 struct mii_attach_args *ma;
151 struct mii_data *mii;
152 const char *sep = "";
153 int capmask = 0xFFFFFFFF;
155 sc = device_get_softc(dev);
156 ma = device_get_ivars(dev);
157 sc->sc_mii.mii_dev = device_get_parent(dev);
158 mii = device_get_softc(sc->sc_mii.mii_dev);
159 LIST_INSERT_HEAD(&mii->mii_phys, &sc->sc_mii, mii_list);
161 sc->sc_mii.mii_inst = mii->mii_instance;
162 sc->sc_mii.mii_phy = ma->mii_phyno;
163 sc->sc_mii.mii_service = tlphy_service;
164 sc->sc_mii.mii_pdata = mii;
166 if (mii->mii_instance) {
167 struct mii_softc *other;
171 device_get_children(sc->sc_mii.mii_dev, &devlist, &devs);
172 for (i = 0; i < devs; i++) {
173 if (strcmp(device_get_name(devlist[i]), "tlphy")) {
174 other = device_get_softc(devlist[i]);
175 capmask &= ~other->mii_capabilities;
179 free(devlist, M_TEMP);
184 sc->sc_mii.mii_flags &= ~MIIF_NOISOLATE;
185 mii_phy_reset(&sc->sc_mii);
186 sc->sc_mii.mii_flags |= MIIF_NOISOLATE;
189 * Note that if we're on a device that also supports 100baseTX,
190 * we are not going to want to use the built-in 10baseT port,
191 * since there will be another PHY on the MII wired up to the
192 * UTP connector. The parent indicates this to us by specifying
193 * the TLPHY_MEDIA_NO_10_T bit.
195 sc->sc_mii.mii_capabilities =
196 PHY_READ(&sc->sc_mii, MII_BMSR) & capmask /*ma->mii_capmask*/;
198 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
200 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->sc_mii.mii_inst),
203 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP,
204 sc->sc_mii.mii_inst), BMCR_LOOP);
206 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
208 device_printf(dev, " ");
209 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc->sc_mii.mii_inst), 0);
210 PRINT("10base2/BNC");
211 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc->sc_mii.mii_inst), 0);
212 PRINT("10base5/AUI");
214 if (sc->sc_mii.mii_capabilities & BMSR_MEDIAMASK) {
216 mii_add_media(&sc->sc_mii);
222 MIIBUS_MEDIAINIT(sc->sc_mii.mii_dev);
227 tlphy_service(struct mii_softc *self, struct mii_data *mii, int cmd)
229 struct tlphy_softc *sc = (struct tlphy_softc *)self;
230 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
233 if (sc->sc_need_acomp)
239 * If we're not polling our PHY instance, just return.
241 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst)
247 * If the media indicates a different PHY instance,
250 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst) {
251 reg = PHY_READ(&sc->sc_mii, MII_BMCR);
252 PHY_WRITE(&sc->sc_mii, MII_BMCR, reg | BMCR_ISO);
257 * If the interface is not up, don't do anything.
259 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
262 switch (IFM_SUBTYPE(ife->ifm_media)) {
265 * The ThunderLAN PHY doesn't self-configure after
266 * an autonegotiation cycle, so there's no such
267 * thing as "already in auto mode".
269 (void) tlphy_auto(sc);
273 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
274 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL);
278 PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0);
280 PHY_WRITE(&sc->sc_mii, MII_ANAR,
281 mii_anar(ife->ifm_media));
282 PHY_WRITE(&sc->sc_mii, MII_BMCR, ife->ifm_data);
288 * If we're not currently selected, just return.
290 if (IFM_INST(ife->ifm_media) != sc->sc_mii.mii_inst)
294 * Is the interface even up?
296 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
300 * Only used for autonegotiation.
302 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
306 * Check to see if we have link. If we do, we don't
307 * need to restart the autonegotiation process. Read
308 * the BMSR twice in case it's latched.
310 * XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?!
312 reg = PHY_READ(&sc->sc_mii, MII_BMSR) |
313 PHY_READ(&sc->sc_mii, MII_BMSR);
318 * Only retry autonegotiation every 5 seconds.
320 if (++sc->sc_mii.mii_ticks <= 5)
323 sc->sc_mii.mii_ticks = 0;
324 mii_phy_reset(&sc->sc_mii);
329 /* Update the media status. */
332 /* Callback if something changed. */
333 mii_phy_update(&sc->sc_mii, cmd);
338 tlphy_status(struct tlphy_softc *sc)
340 struct mii_data *mii = sc->sc_mii.mii_pdata;
341 int bmsr, bmcr, tlctrl;
343 mii->mii_media_status = IFM_AVALID;
344 mii->mii_media_active = IFM_ETHER;
346 bmcr = PHY_READ(&sc->sc_mii, MII_BMCR);
347 if (bmcr & BMCR_ISO) {
348 mii->mii_media_active |= IFM_NONE;
349 mii->mii_media_status = 0;
353 tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL);
354 if (tlctrl & CTRL_AUISEL) {
355 mii->mii_media_status = 0;
356 mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media;
360 bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) |
361 PHY_READ(&sc->sc_mii, MII_BMSR);
362 if (bmsr & BMSR_LINK)
363 mii->mii_media_status |= IFM_ACTIVE;
365 if (bmcr & BMCR_LOOP)
366 mii->mii_media_active |= IFM_LOOP;
369 * Grr, braindead ThunderLAN PHY doesn't have any way to
370 * tell which media is actually active. (Note it also
371 * doesn't self-configure after autonegotiation.) We
372 * just have to report what's in the BMCR.
375 mii->mii_media_active |= IFM_FDX;
376 mii->mii_media_active |= IFM_10_T;
380 tlphy_auto(struct tlphy_softc *sc)
384 switch ((error = mii_phy_auto(&sc->sc_mii))) {
387 * Just assume we're not in full-duplex mode.
388 * XXX Check link and try AUI/BNC?
390 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
394 /* Flag that we need to program when it completes. */
395 sc->sc_need_acomp = 1;
406 tlphy_acomp(struct tlphy_softc *sc)
410 sc->sc_need_acomp = 0;
413 * Grr, braindead ThunderLAN PHY doesn't self-configure
414 * after autonegotiation. We have to do it ourselves
415 * based on the link partner status.
418 aner = PHY_READ(&sc->sc_mii, MII_ANER);
419 if (aner & ANER_LPAN) {
420 anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) &
421 PHY_READ(&sc->sc_mii, MII_ANAR);
422 if (anlpar & ANAR_10_FD) {
423 PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX);
427 PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);