2 * Copyright (c) 2001 Wind River Systems
4 * Bill Paul <wpaul@bsdi.com>. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Bill Paul.
17 * 4. Neither the name of the author nor the names of any co-contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
33 * $FreeBSD: src/sys/dev/mii/nsgphy.c,v 1.1.2.3 2002/11/08 21:53:49 semenu Exp $
34 * $DragonFly: src/sys/dev/netif/mii_layer/nsgphy.c,v 1.5 2004/09/18 19:32:59 dillon Exp $
36 * $FreeBSD: src/sys/dev/mii/nsgphy.c,v 1.1.2.3 2002/11/08 21:53:49 semenu Exp $
40 * Driver for the National Semiconductor DP83891 and DP83861
42 * Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf
44 * The DP83891 is the older NatSemi gigE PHY which isn't being sold
45 * anymore. The DP83861 is its replacement, which is an 'enhanced'
46 * firmware driven component. The major difference between the
47 * two is that the 83891 can't generate interrupts, while the
48 * 83861 can. (I think it wasn't originally designed to do this, but
49 * it can now thanks to firmware updates.) The 83861 also allows
50 * access to its internal RAM via indirect register access.
53 #include <sys/param.h>
54 #include <sys/systm.h>
55 #include <sys/kernel.h>
56 #include <sys/socket.h>
59 #include <machine/clock.h>
62 #include <net/if_media.h>
68 #include "nsgphyreg.h"
70 #include "miibus_if.h"
72 static int nsgphy_probe (device_t);
73 static int nsgphy_attach (device_t);
74 static int nsgphy_detach (device_t);
76 static device_method_t nsgphy_methods[] = {
77 /* device interface */
78 DEVMETHOD(device_probe, nsgphy_probe),
79 DEVMETHOD(device_attach, nsgphy_attach),
80 DEVMETHOD(device_detach, nsgphy_detach),
81 DEVMETHOD(device_shutdown, bus_generic_shutdown),
85 static devclass_t nsgphy_devclass;
87 static driver_t nsgphy_driver = {
90 sizeof(struct mii_softc)
93 DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, nsgphy_devclass, 0, 0);
95 int nsgphy_service (struct mii_softc *, struct mii_data *, int);
96 void nsgphy_status (struct mii_softc *);
98 static int nsgphy_mii_phy_auto (struct mii_softc *, int);
99 extern void mii_phy_auto_timeout (void *);
101 static int nsgphy_probe(dev)
104 struct mii_attach_args *ma;
106 ma = device_get_ivars(dev);
108 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI) {
109 if (MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83891) {
110 device_set_desc(dev, MII_STR_NATSEMI_DP83891);
113 if (MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83861) {
114 device_set_desc(dev, MII_STR_NATSEMI_DP83861);
122 static int nsgphy_attach(dev)
125 struct mii_softc *sc;
126 struct mii_attach_args *ma;
127 struct mii_data *mii;
128 const char *sep = "";
130 sc = device_get_softc(dev);
131 ma = device_get_ivars(dev);
133 sc->mii_dev = device_get_parent(dev);
134 mii = device_get_softc(sc->mii_dev);
135 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
137 sc->mii_inst = mii->mii_instance;
138 sc->mii_phy = ma->mii_phyno;
139 sc->mii_service = nsgphy_service;
142 sc->mii_flags |= MIIF_NOISOLATE;
145 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
146 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
148 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
151 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
152 BMCR_LOOP|BMCR_S100);
157 device_printf(dev, " ");
158 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, IFM_FDX, sc->mii_inst),
159 NSGPHY_S1000|NSGPHY_BMCR_FDX);
160 PRINT("1000baseTX-FDX");
161 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_TX, 0, sc->mii_inst),
164 sc->mii_capabilities =
165 (PHY_READ(sc, MII_BMSR) |
166 (BMSR_10TFDX|BMSR_10THDX)) & ma->mii_capmask;
167 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
168 NSGPHY_S100|NSGPHY_BMCR_FDX);
169 PRINT("100baseTX-FDX");
170 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), NSGPHY_S100);
172 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
173 NSGPHY_S10|NSGPHY_BMCR_FDX);
174 PRINT("10baseT-FDX");
175 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), NSGPHY_S10);
177 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
183 MIIBUS_MEDIAINIT(sc->mii_dev);
187 static int nsgphy_detach(dev)
190 struct mii_softc *sc;
191 struct mii_data *mii;
193 sc = device_get_softc(dev);
194 mii = device_get_softc(device_get_parent(dev));
195 if (sc->mii_flags & MIIF_DOINGAUTO)
196 callout_stop(&sc->mii_auto_ch);
198 LIST_REMOVE(sc, mii_list);
203 nsgphy_service(sc, mii, cmd)
204 struct mii_softc *sc;
205 struct mii_data *mii;
208 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
214 * If we're not polling our PHY instance, just return.
216 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
222 * If the media indicates a different PHY instance,
225 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
226 reg = PHY_READ(sc, MII_BMCR);
227 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
232 * If the interface is not up, don't do anything.
234 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
238 switch (IFM_SUBTYPE(ife->ifm_media)) {
242 * If we're already in auto mode, just return.
244 if (PHY_READ(sc, NSGPHY_MII_BMCR) & NSGPHY_BMCR_AUTOEN)
247 (void) nsgphy_mii_phy_auto(sc, 0);
250 if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
251 PHY_WRITE(sc, NSGPHY_MII_BMCR,
252 NSGPHY_BMCR_FDX|NSGPHY_BMCR_SPD1);
254 PHY_WRITE(sc, NSGPHY_MII_BMCR,
257 PHY_WRITE(sc, NSGPHY_MII_ANAR, NSGPHY_SEL_TYPE);
260 * When setting the link manually, one side must
261 * be the master and the other the slave. However
262 * ifmedia doesn't give us a good way to specify
263 * this, so we fake it by using one of the LINK
264 * flags. If LINK0 is set, we program the PHY to
265 * be a master, otherwise it's a slave.
267 if ((mii->mii_ifp->if_flags & IFF_LINK0)) {
268 PHY_WRITE(sc, NSGPHY_MII_1000CTL,
269 NSGPHY_1000CTL_MSE|NSGPHY_1000CTL_MSC);
271 PHY_WRITE(sc, NSGPHY_MII_1000CTL,
277 * XXX Not supported as a manual setting right now.
281 PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN);
285 * BMCR data is stored in the ifmedia entry.
287 PHY_WRITE(sc, MII_ANAR,
288 mii_anar(ife->ifm_media));
289 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
296 * If we're not currently selected, just return.
298 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
302 * Only used for autonegotiation.
304 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
308 * Is the interface even up?
310 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
314 * Only retry autonegotiation every 17 seconds.
315 * Actually, for gigE PHYs, we should wait longer, since
316 * 5 seconds is the mimimum time the documentation
317 * says to wait for a 1000mbps link to be established.
319 if (++sc->mii_ticks != 17)
325 * Check to see if we have link.
327 reg = PHY_READ(sc, NSGPHY_MII_PHYSUP);
328 if (reg & NSGPHY_PHYSUP_LNKSTS)
332 if (nsgphy_mii_phy_auto(sc, 0) == EJUSTRETURN)
337 /* Update the media status. */
340 /* Callback if something changed. */
341 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
342 MIIBUS_STATCHG(sc->mii_dev);
343 sc->mii_active = mii->mii_media_active;
350 struct mii_softc *sc;
352 struct mii_data *mii = sc->mii_pdata;
353 int bmsr, bmcr, physup, anlpar, gstat;
355 mii->mii_media_status = IFM_AVALID;
356 mii->mii_media_active = IFM_ETHER;
358 bmsr = PHY_READ(sc, NSGPHY_MII_BMSR);
359 physup = PHY_READ(sc, NSGPHY_MII_PHYSUP);
360 if (physup & NSGPHY_PHYSUP_LNKSTS)
361 mii->mii_media_status |= IFM_ACTIVE;
363 bmcr = PHY_READ(sc, NSGPHY_MII_BMCR);
365 if (bmcr & NSGPHY_BMCR_LOOP)
366 mii->mii_media_active |= IFM_LOOP;
368 if (bmcr & NSGPHY_BMCR_AUTOEN) {
369 if ((bmsr & NSGPHY_BMSR_ACOMP) == 0) {
370 /* Erg, still trying, I guess... */
371 mii->mii_media_active |= IFM_NONE;
374 anlpar = PHY_READ(sc, NSGPHY_MII_ANLPAR);
375 gstat = PHY_READ(sc, NSGPHY_MII_1000STS);
376 if (gstat & NSGPHY_1000STS_LPFD)
377 mii->mii_media_active |= IFM_1000_TX|IFM_FDX;
378 else if (gstat & NSGPHY_1000STS_LPHD)
379 mii->mii_media_active |= IFM_1000_TX|IFM_HDX;
380 else if (anlpar & NSGPHY_ANLPAR_100T4)
381 mii->mii_media_active |= IFM_100_T4;
382 else if (anlpar & NSGPHY_ANLPAR_100FDX)
383 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
384 else if (anlpar & NSGPHY_ANLPAR_100HDX)
385 mii->mii_media_active |= IFM_100_TX;
386 else if (anlpar & NSGPHY_ANLPAR_10FDX)
387 mii->mii_media_active |= IFM_10_T|IFM_FDX;
388 else if (anlpar & NSGPHY_ANLPAR_10HDX)
389 mii->mii_media_active |= IFM_10_T|IFM_HDX;
391 mii->mii_media_active |= IFM_NONE;
395 switch(bmcr & (NSGPHY_BMCR_SPD1|NSGPHY_BMCR_SPD0)) {
397 mii->mii_media_active |= IFM_1000_TX;
400 mii->mii_media_active |= IFM_100_TX;
403 mii->mii_media_active |= IFM_10_T;
409 if (bmcr & NSGPHY_BMCR_FDX)
410 mii->mii_media_active |= IFM_FDX;
412 mii->mii_media_active |= IFM_HDX;
419 nsgphy_mii_phy_auto(mii, waitfor)
420 struct mii_softc *mii;
423 int bmsr, ktcr = 0, i;
425 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
427 PHY_WRITE(mii, NSGPHY_MII_BMCR, 0);
429 ktcr = PHY_READ(mii, NSGPHY_MII_1000CTL);
430 PHY_WRITE(mii, NSGPHY_MII_1000CTL, ktcr |
431 (NSGPHY_1000CTL_AFD|NSGPHY_1000CTL_AHD));
432 ktcr = PHY_READ(mii, NSGPHY_MII_1000CTL);
434 PHY_WRITE(mii, NSGPHY_MII_ANAR,
435 BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA);
437 PHY_WRITE(mii, NSGPHY_MII_BMCR,
438 NSGPHY_BMCR_AUTOEN | NSGPHY_BMCR_STARTNEG);
442 /* Wait 500ms for it to complete. */
443 for (i = 0; i < 500; i++) {
444 if ((bmsr = PHY_READ(mii, NSGPHY_MII_BMSR)) &
449 if ((bmsr & BMSR_ACOMP) == 0)
450 printf("%s: autonegotiation failed to complete\n",
451 mii->mii_dev.dv_xname);
456 * Don't need to worry about clearing MIIF_DOINGAUTO.
457 * If that's set, a timeout is pending, and it will
464 * Just let it finish asynchronously. This is for the benefit of
465 * the tick handler driving autonegotiation. Don't want 500ms
466 * delays all the time while the system is running!
468 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
469 mii->mii_flags |= MIIF_DOINGAUTO;
470 callout_reset(&mii->mii_auto_ch, hz >> 1,
471 mii_phy_auto_timeout, mii);
473 return (EJUSTRETURN);