2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
32 * $FreeBSD: src/sys/dev/mii/amphy.c,v 1.2.2.2 2002/11/08 21:53:49 semenu Exp $
33 * $DragonFly: src/sys/dev/netif/mii_layer/amphy.c,v 1.5 2004/09/18 19:32:59 dillon Exp $
35 * $FreeBSD: src/sys/dev/mii/amphy.c,v 1.2.2.2 2002/11/08 21:53:49 semenu Exp $
39 * driver for AMD AM79c873 PHYs
40 * This driver also works for the Davicom DM9101 PHY, which appears to
41 * be an AM79c873 workalike.
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/kernel.h>
47 #include <sys/socket.h>
51 #include <net/if_media.h>
59 #include "miibus_if.h"
61 static int amphy_probe (device_t);
62 static int amphy_attach (device_t);
63 static int amphy_detach (device_t);
65 static device_method_t amphy_methods[] = {
66 /* device interface */
67 DEVMETHOD(device_probe, amphy_probe),
68 DEVMETHOD(device_attach, amphy_attach),
69 DEVMETHOD(device_detach, amphy_detach),
70 DEVMETHOD(device_shutdown, bus_generic_shutdown),
74 static devclass_t amphy_devclass;
76 static driver_t amphy_driver = {
79 sizeof(struct mii_softc)
82 DRIVER_MODULE(amphy, miibus, amphy_driver, amphy_devclass, 0, 0);
84 int amphy_service (struct mii_softc *, struct mii_data *, int);
85 void amphy_status (struct mii_softc *);
87 static int amphy_probe(dev)
90 struct mii_attach_args *ma;
92 ma = device_get_ivars(dev);
94 if ((MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxAMD ||
95 MII_MODEL(ma->mii_id2) != MII_MODEL_xxAMD_79C873) &&
96 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxDAVICOM ||
97 MII_MODEL(ma->mii_id2) != MII_MODEL_xxDAVICOM_DM9101))
100 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxAMD)
101 device_set_desc(dev, MII_STR_xxAMD_79C873);
102 else if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxDAVICOM)
103 device_set_desc(dev, MII_STR_xxDAVICOM_DM9101);
108 static int amphy_attach(dev)
111 struct mii_softc *sc;
112 struct mii_attach_args *ma;
113 struct mii_data *mii;
115 sc = device_get_softc(dev);
116 ma = device_get_ivars(dev);
118 sc->mii_dev = device_get_parent(dev);
119 mii = device_get_softc(sc->mii_dev);
120 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
122 sc->mii_inst = mii->mii_instance;
123 sc->mii_phy = ma->mii_phyno;
124 sc->mii_service = amphy_service;
127 sc->mii_flags |= MIIF_NOISOLATE;
130 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
132 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
135 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
136 BMCR_LOOP|BMCR_S100);
141 sc->mii_capabilities =
142 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
143 device_printf(dev, " ");
144 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
145 printf("no media present");
147 mii_add_media(mii, sc->mii_capabilities,
151 MIIBUS_MEDIAINIT(sc->mii_dev);
155 static int amphy_detach(dev)
158 struct mii_softc *sc;
159 struct mii_data *mii;
161 sc = device_get_softc(dev);
162 mii = device_get_softc(device_get_parent(dev));
163 mii_phy_auto_stop(sc);
165 LIST_REMOVE(sc, mii_list);
170 amphy_service(sc, mii, cmd)
171 struct mii_softc *sc;
172 struct mii_data *mii;
175 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
181 * If we're not polling our PHY instance, just return.
183 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
189 * If the media indicates a different PHY instance,
192 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
193 reg = PHY_READ(sc, MII_BMCR);
194 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
199 * If the interface is not up, don't do anything.
201 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
204 switch (IFM_SUBTYPE(ife->ifm_media)) {
207 * If we're already in auto mode, just return.
209 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
211 (void) mii_phy_auto(sc, 1);
215 * XXX Not supported as a manual setting right now.
220 * BMCR data is stored in the ifmedia entry.
222 PHY_WRITE(sc, MII_ANAR,
223 mii_anar(ife->ifm_media));
224 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
230 * If we're not currently selected, just return.
232 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
236 * Only used for autonegotiation.
238 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
242 * Is the interface even up?
244 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
248 * Only retry autonegotiation every 5 seconds.
250 if (++sc->mii_ticks != 5)
256 * Check to see if we have link. If we do, we don't
257 * need to restart the autonegotiation process. Read
258 * the BMSR twice in case it's latched.
260 reg = PHY_READ(sc, MII_BMSR) |
261 PHY_READ(sc, MII_BMSR);
266 if (mii_phy_auto(sc, 0) == EJUSTRETURN)
271 /* Update the media status. */
274 /* Callback if something changed. */
275 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
276 MIIBUS_STATCHG(sc->mii_dev);
277 sc->mii_active = mii->mii_media_active;
284 struct mii_softc *sc;
286 struct mii_data *mii = sc->mii_pdata;
287 int bmsr, bmcr, par, anlpar;
289 mii->mii_media_status = IFM_AVALID;
290 mii->mii_media_active = IFM_ETHER;
292 bmsr = PHY_READ(sc, MII_BMSR) |
293 PHY_READ(sc, MII_BMSR);
294 if (bmsr & BMSR_LINK)
295 mii->mii_media_status |= IFM_ACTIVE;
297 bmcr = PHY_READ(sc, MII_BMCR);
298 if (bmcr & BMCR_ISO) {
299 mii->mii_media_active |= IFM_NONE;
300 mii->mii_media_status = 0;
304 if (bmcr & BMCR_LOOP)
305 mii->mii_media_active |= IFM_LOOP;
307 if (bmcr & BMCR_AUTOEN) {
309 * The PAR status bits are only valid of autonegotiation
310 * has completed (or it's disabled).
312 if ((bmsr & BMSR_ACOMP) == 0) {
313 /* Erg, still trying, I guess... */
314 mii->mii_media_active |= IFM_NONE;
318 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) {
319 anlpar = PHY_READ(sc, MII_ANAR) &
320 PHY_READ(sc, MII_ANLPAR);
321 if (anlpar & ANLPAR_T4)
322 mii->mii_media_active |= IFM_100_T4;
323 else if (anlpar & ANLPAR_TX_FD)
324 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
325 else if (anlpar & ANLPAR_TX)
326 mii->mii_media_active |= IFM_100_TX;
327 else if (anlpar & ANLPAR_10_FD)
328 mii->mii_media_active |= IFM_10_T|IFM_FDX;
329 else if (anlpar & ANLPAR_10)
330 mii->mii_media_active |= IFM_10_T;
332 mii->mii_media_active |= IFM_NONE;
337 * Link partner is not capable of autonegotiation.
339 par = PHY_READ(sc, MII_AMPHY_DSCSR);
340 if (par & DSCSR_100FDX)
341 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
342 else if (par & DSCSR_100HDX)
343 mii->mii_media_active |= IFM_100_TX;
344 else if (par & DSCSR_10FDX)
345 mii->mii_media_active |= IFM_10_T|IFM_HDX;
346 else if (par & DSCSR_10HDX)
347 mii->mii_media_active |= IFM_10_T;
349 mii->mii_media_active = mii_media_from_bmcr(bmcr);