1 /* $NetBSD: nsphy.c,v 1.18 1999/07/14 23:57:36 thorpej 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 National Semiconductor's DP83840A ethernet 10/100 PHY
74 * Data Sheet available from www.national.com
77 #include <sys/param.h>
78 #include <sys/systm.h>
79 #include <sys/kernel.h>
80 #include <sys/socket.h>
81 #include <sys/errno.h>
82 #include <sys/module.h>
86 #include <net/if_media.h>
88 #include <dev/mii/mii.h>
89 #include <dev/mii/miivar.h>
92 #include <dev/mii/nsphyreg.h>
94 #include "miibus_if.h"
96 static int nsphy_probe(device_t);
97 static int nsphy_attach(device_t);
99 static device_method_t nsphy_methods[] = {
100 /* device interface */
101 DEVMETHOD(device_probe, nsphy_probe),
102 DEVMETHOD(device_attach, nsphy_attach),
103 DEVMETHOD(device_detach, mii_phy_detach),
104 DEVMETHOD(device_shutdown, bus_generic_shutdown),
108 static devclass_t nsphy_devclass;
110 static driver_t nsphy_driver = {
113 sizeof(struct mii_softc)
116 DRIVER_MODULE(nsphy, miibus, nsphy_driver, nsphy_devclass, 0, 0);
118 static int nsphy_service(struct mii_softc *, struct mii_data *, int);
119 static void nsphy_status(struct mii_softc *);
122 nsphy_probe(device_t dev)
124 struct mii_attach_args *ma;
126 ma = device_get_ivars(dev);
128 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI &&
129 MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83840) {
130 device_set_desc(dev, MII_STR_NATSEMI_DP83840);
138 nsphy_attach(device_t dev)
140 struct mii_softc *sc;
141 struct mii_attach_args *ma;
142 struct mii_data *mii;
144 sc = device_get_softc(dev);
145 ma = device_get_ivars(dev);
146 sc->mii_dev = device_get_parent(dev);
147 mii = device_get_softc(sc->mii_dev);
148 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
150 sc->mii_inst = mii->mii_instance;
151 sc->mii_phy = ma->mii_phyno;
152 sc->mii_service = nsphy_service;
157 * i82557 wedges if all of its PHYs are isolated!
159 if (strcmp(device_get_name(device_get_parent(sc->mii_dev)),
160 "fxp") == 0 && mii->mii_instance == 0)
163 sc->mii_flags |= MIIF_NOISOLATE;
166 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
169 /* Can't do this on the i82557! */
170 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
173 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
174 BMCR_LOOP|BMCR_S100);
178 sc->mii_capabilities =
179 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
180 device_printf(dev, " ");
185 MIIBUS_MEDIAINIT(sc->mii_dev);
190 nsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
192 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
199 * If we're not polling our PHY instance, just return.
201 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
207 * If the media indicates a different PHY instance,
210 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
211 reg = PHY_READ(sc, MII_BMCR);
212 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
217 * If the interface is not up, don't do anything.
219 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
222 parent = device_get_parent(sc->mii_dev);
224 reg = PHY_READ(sc, MII_NSPHY_PCR);
227 * Set up the PCR to use LED4 to indicate full-duplex
228 * in both 10baseT and 100baseTX modes.
233 * Make sure Carrier Integrity Monitor function is
234 * disabled (normal for Node operation, but sometimes
240 * Make sure "force link good" is set to normal mode.
241 * It's only intended for debugging.
246 * Mystery bits which are supposedly `reserved',
247 * but we seem to need to set them when the PHY
248 * is connected to some interfaces:
250 * 0x0400 is needed for fxp
251 * (Intel EtherExpress Pro 10+/100B, 82557 chip)
252 * (nsphy with a DP83840 chip)
253 * 0x0100 may be needed for some other card
255 reg |= 0x0100 | 0x0400;
257 if (strcmp(device_get_name(parent), "fxp") == 0)
258 PHY_WRITE(sc, MII_NSPHY_PCR, reg);
260 switch (IFM_SUBTYPE(ife->ifm_media)) {
263 * If we're already in auto mode and don't hang off
264 * of a hme(4), just return. DP83840A on hme(4) don't
265 * advertise their media capabilities themselves
266 * properly so force writing the ANAR according to
267 * the BMSR by mii_phy_auto() every time.
269 if ((PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) == 0 &&
270 strcmp(device_get_name(parent), "hme") != 0)
272 (void) mii_phy_auto(sc);
276 * XXX Not supported as a manual setting right now.
281 * BMCR data is stored in the ifmedia entry.
283 PHY_WRITE(sc, MII_ANAR,
284 mii_anar(ife->ifm_media));
285 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
291 * If we're not currently selected, just return.
293 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
295 if (mii_phy_tick(sc) == EJUSTRETURN)
300 /* Update the media status. */
303 /* Callback if something changed. */
304 mii_phy_update(sc, cmd);
309 nsphy_status(struct mii_softc *sc)
311 struct mii_data *mii = sc->mii_pdata;
312 int bmsr, bmcr, par, anlpar;
314 mii->mii_media_status = IFM_AVALID;
315 mii->mii_media_active = IFM_ETHER;
317 bmsr = PHY_READ(sc, MII_BMSR) |
318 PHY_READ(sc, MII_BMSR);
319 if (bmsr & BMSR_LINK)
320 mii->mii_media_status |= IFM_ACTIVE;
322 bmcr = PHY_READ(sc, MII_BMCR);
323 if (bmcr & BMCR_ISO) {
324 mii->mii_media_active |= IFM_NONE;
325 mii->mii_media_status = 0;
329 if (bmcr & BMCR_LOOP)
330 mii->mii_media_active |= IFM_LOOP;
332 if (bmcr & BMCR_AUTOEN) {
334 * The PAR status bits are only valid of autonegotiation
335 * has completed (or it's disabled).
337 if ((bmsr & BMSR_ACOMP) == 0) {
338 /* Erg, still trying, I guess... */
339 mii->mii_media_active |= IFM_NONE;
344 * Argh. The PAR doesn't seem to indicate duplex mode
345 * properly! Determine media based on link partner's
346 * advertised capabilities.
348 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) {
349 anlpar = PHY_READ(sc, MII_ANAR) &
350 PHY_READ(sc, MII_ANLPAR);
351 if (anlpar & ANLPAR_T4)
352 mii->mii_media_active |= IFM_100_T4;
353 else if (anlpar & ANLPAR_TX_FD)
354 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
355 else if (anlpar & ANLPAR_TX)
356 mii->mii_media_active |= IFM_100_TX;
357 else if (anlpar & ANLPAR_10_FD)
358 mii->mii_media_active |= IFM_10_T|IFM_FDX;
359 else if (anlpar & ANLPAR_10)
360 mii->mii_media_active |= IFM_10_T;
362 mii->mii_media_active |= IFM_NONE;
367 * Link partner is not capable of autonegotiation.
368 * We will never be in full-duplex mode if this is
369 * the case, so reading the PAR is OK.
371 par = PHY_READ(sc, MII_NSPHY_PAR);
373 mii->mii_media_active |= IFM_10_T;
375 mii->mii_media_active |= IFM_100_TX;
378 mii->mii_media_active |= IFM_FDX;
381 mii->mii_media_active |= mii_media_from_bmcr(bmcr);