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.
39 * $FreeBSD: src/sys/dev/mii/nsphy.c,v 1.2.2.5 2001/06/08 19:58:33 semenu Exp $
40 * $DragonFly: src/sys/dev/netif/mii_layer/nsphy.c,v 1.8 2005/12/11 01:54:08 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 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>
94 #include "miibus_if.h"
96 static int nsphy_probe (device_t);
97 static int nsphy_attach (device_t);
98 static int nsphy_detach (device_t);
100 static device_method_t nsphy_methods[] = {
101 /* device interface */
102 DEVMETHOD(device_probe, nsphy_probe),
103 DEVMETHOD(device_attach, nsphy_attach),
104 DEVMETHOD(device_detach, nsphy_detach),
105 DEVMETHOD(device_shutdown, bus_generic_shutdown),
109 static devclass_t nsphy_devclass;
111 static driver_t nsphy_driver = {
114 sizeof(struct mii_softc)
117 DRIVER_MODULE(nsphy, miibus, nsphy_driver, nsphy_devclass, 0, 0);
119 int nsphy_service (struct mii_softc *, struct mii_data *, int);
120 void nsphy_status (struct mii_softc *);
123 nsphy_probe(device_t dev)
125 struct mii_attach_args *ma;
127 ma = device_get_ivars(dev);
129 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI &&
130 MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83840) {
131 device_set_desc(dev, MII_STR_NATSEMI_DP83840);
139 nsphy_attach(device_t dev)
141 struct mii_softc *sc;
142 struct mii_attach_args *ma;
143 struct mii_data *mii;
145 sc = device_get_softc(dev);
146 ma = device_get_ivars(dev);
147 mii_softc_init(sc, ma);
148 sc->mii_dev = device_get_parent(dev);
149 mii = device_get_softc(sc->mii_dev);
150 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
152 sc->mii_inst = mii->mii_instance;
153 sc->mii_service = nsphy_service;
158 * i82557 wedges if all of its PHYs are isolated!
160 if (strcmp(device_get_name(device_get_parent(sc->mii_dev)),
161 "fxp") == 0 && mii->mii_instance == 0)
164 sc->mii_flags |= MIIF_NOISOLATE;
167 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
170 /* Can't do this on the i82557! */
171 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
174 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
175 BMCR_LOOP|BMCR_S100);
179 sc->mii_capabilities =
180 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
181 device_printf(dev, " ");
182 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
183 printf("no media present");
185 mii_add_media(sc, sc->mii_capabilities);
189 MIIBUS_MEDIAINIT(sc->mii_dev);
194 nsphy_detach(device_t dev)
196 struct mii_softc *sc;
197 struct mii_data *mii;
199 sc = device_get_softc(dev);
200 mii = device_get_softc(device_get_parent(dev));
201 mii_phy_auto_stop(sc);
203 LIST_REMOVE(sc, mii_list);
209 nsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
211 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
217 * If we're not polling our PHY instance, just return.
219 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
225 * If the media indicates a different PHY instance,
228 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
229 reg = PHY_READ(sc, MII_BMCR);
230 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
235 * If the interface is not up, don't do anything.
237 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
240 reg = PHY_READ(sc, MII_NSPHY_PCR);
243 * Set up the PCR to use LED4 to indicate full-duplex
244 * in both 10baseT and 100baseTX modes.
249 * Make sure Carrier Intgrity Monitor function is
250 * disabled (normal for Node operation, but sometimes
256 * Make sure "force link good" is set to normal mode.
257 * It's only intended for debugging.
262 * Mystery bits which are supposedly `reserved',
263 * but we seem to need to set them when the PHY
264 * is connected to some interfaces:
266 * 0x0400 is needed for fxp
267 * (Intel EtherExpress Pro 10+/100B, 82557 chip)
268 * (nsphy with a DP83840 chip)
269 * 0x0100 may be needed for some other card
271 reg |= 0x0100 | 0x0400;
273 if (strcmp(device_get_name(device_get_parent(sc->mii_dev)),
275 PHY_WRITE(sc, MII_NSPHY_PCR, reg);
277 switch (IFM_SUBTYPE(ife->ifm_media)) {
280 * If we're already in auto mode, just return.
282 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
284 (void) mii_phy_auto(sc, 1);
288 * XXX Not supported as a manual setting right now.
293 * BMCR data is stored in the ifmedia entry.
295 PHY_WRITE(sc, MII_ANAR,
296 mii_anar(ife->ifm_media));
297 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
303 * If we're not currently selected, just return.
305 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
309 * Only used for autonegotiation.
311 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
315 * Is the interface even up?
317 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
321 * Check to see if we have link. If we do, we don't
322 * need to restart the autonegotiation process. Read
323 * the BMSR twice in case it's latched.
325 reg = PHY_READ(sc, MII_BMSR) |
326 PHY_READ(sc, MII_BMSR);
331 * Only retry autonegotiation every 5 seconds.
333 if (++sc->mii_ticks != 5)
338 if (mii_phy_auto(sc, 0) == EJUSTRETURN)
343 /* Update the media status. */
346 /* Callback if something changed. */
347 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
348 MIIBUS_STATCHG(sc->mii_dev);
349 sc->mii_active = mii->mii_media_active;
355 nsphy_status(struct mii_softc *sc)
357 struct mii_data *mii = sc->mii_pdata;
358 int bmsr, bmcr, par, anlpar;
360 mii->mii_media_status = IFM_AVALID;
361 mii->mii_media_active = IFM_ETHER;
363 bmsr = PHY_READ(sc, MII_BMSR) |
364 PHY_READ(sc, MII_BMSR);
365 if (bmsr & BMSR_LINK)
366 mii->mii_media_status |= IFM_ACTIVE;
368 bmcr = PHY_READ(sc, MII_BMCR);
369 if (bmcr & BMCR_ISO) {
370 mii->mii_media_active |= IFM_NONE;
371 mii->mii_media_status = 0;
375 if (bmcr & BMCR_LOOP)
376 mii->mii_media_active |= IFM_LOOP;
378 if (bmcr & BMCR_AUTOEN) {
380 * The PAR status bits are only valid of autonegotiation
381 * has completed (or it's disabled).
383 if ((bmsr & BMSR_ACOMP) == 0) {
384 /* Erg, still trying, I guess... */
385 mii->mii_media_active |= IFM_NONE;
390 * Argh. The PAR doesn't seem to indicate duplex mode
391 * properly! Determine media based on link partner's
392 * advertised capabilities.
394 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) {
395 anlpar = PHY_READ(sc, MII_ANAR) &
396 PHY_READ(sc, MII_ANLPAR);
397 if (anlpar & ANLPAR_T4)
398 mii->mii_media_active |= IFM_100_T4;
399 else if (anlpar & ANLPAR_TX_FD)
400 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
401 else if (anlpar & ANLPAR_TX)
402 mii->mii_media_active |= IFM_100_TX;
403 else if (anlpar & ANLPAR_10_FD)
404 mii->mii_media_active |= IFM_10_T|IFM_FDX;
405 else if (anlpar & ANLPAR_10)
406 mii->mii_media_active |= IFM_10_T;
408 mii->mii_media_active |= IFM_NONE;
413 * Link partner is not capable of autonegotiation.
414 * We will never be in full-duplex mode if this is
415 * the case, so reading the PAR is OK.
417 par = PHY_READ(sc, MII_NSPHY_PAR);
419 mii->mii_media_active |= IFM_10_T;
421 mii->mii_media_active |= IFM_100_TX;
424 mii->mii_media_active |= IFM_FDX;
427 mii->mii_media_active |= mii_media_from_bmcr(bmcr);