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 $
36 * driver for AMD AM79c873 PHYs
37 * This driver also works for the Davicom DM9101 PHY, which appears to
38 * be an AM79c873 workalike.
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/socket.h>
48 #include <net/if_media.h>
50 #include <dev/mii/mii.h>
51 #include <dev/mii/miivar.h>
52 #include <dev/mii/miidevs.h>
54 #include <dev/mii/amphyreg.h>
56 #include "miibus_if.h"
59 static const char rcsid[] =
60 "$FreeBSD: src/sys/dev/mii/amphy.c,v 1.2.2.2 2002/11/08 21:53:49 semenu Exp $";
63 static int amphy_probe __P((device_t));
64 static int amphy_attach __P((device_t));
65 static int amphy_detach __P((device_t));
67 static device_method_t amphy_methods[] = {
68 /* device interface */
69 DEVMETHOD(device_probe, amphy_probe),
70 DEVMETHOD(device_attach, amphy_attach),
71 DEVMETHOD(device_detach, amphy_detach),
72 DEVMETHOD(device_shutdown, bus_generic_shutdown),
76 static devclass_t amphy_devclass;
78 static driver_t amphy_driver = {
81 sizeof(struct mii_softc)
84 DRIVER_MODULE(amphy, miibus, amphy_driver, amphy_devclass, 0, 0);
86 int amphy_service __P((struct mii_softc *, struct mii_data *, int));
87 void amphy_status __P((struct mii_softc *));
89 static int amphy_probe(dev)
92 struct mii_attach_args *ma;
94 ma = device_get_ivars(dev);
96 if ((MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxAMD ||
97 MII_MODEL(ma->mii_id2) != MII_MODEL_xxAMD_79C873) &&
98 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxDAVICOM ||
99 MII_MODEL(ma->mii_id2) != MII_MODEL_xxDAVICOM_DM9101))
102 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxAMD)
103 device_set_desc(dev, MII_STR_xxAMD_79C873);
104 else if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxDAVICOM)
105 device_set_desc(dev, MII_STR_xxDAVICOM_DM9101);
110 static int amphy_attach(dev)
113 struct mii_softc *sc;
114 struct mii_attach_args *ma;
115 struct mii_data *mii;
117 sc = device_get_softc(dev);
118 ma = device_get_ivars(dev);
119 sc->mii_dev = device_get_parent(dev);
120 mii = device_get_softc(sc->mii_dev);
121 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
123 sc->mii_inst = mii->mii_instance;
124 sc->mii_phy = ma->mii_phyno;
125 sc->mii_service = amphy_service;
128 sc->mii_flags |= MIIF_NOISOLATE;
131 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
133 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
136 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
137 BMCR_LOOP|BMCR_S100);
142 sc->mii_capabilities =
143 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
144 device_printf(dev, " ");
145 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
146 printf("no media present");
148 mii_add_media(mii, sc->mii_capabilities,
152 MIIBUS_MEDIAINIT(sc->mii_dev);
156 static int amphy_detach(dev)
159 struct mii_softc *sc;
160 struct mii_data *mii;
162 sc = device_get_softc(dev);
163 mii = device_get_softc(device_get_parent(dev));
164 mii_phy_auto_stop(sc);
166 LIST_REMOVE(sc, mii_list);
171 amphy_service(sc, mii, cmd)
172 struct mii_softc *sc;
173 struct mii_data *mii;
176 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
182 * If we're not polling our PHY instance, just return.
184 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
190 * If the media indicates a different PHY instance,
193 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
194 reg = PHY_READ(sc, MII_BMCR);
195 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
200 * If the interface is not up, don't do anything.
202 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
205 switch (IFM_SUBTYPE(ife->ifm_media)) {
208 * If we're already in auto mode, just return.
210 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
212 (void) mii_phy_auto(sc, 1);
216 * XXX Not supported as a manual setting right now.
221 * BMCR data is stored in the ifmedia entry.
223 PHY_WRITE(sc, MII_ANAR,
224 mii_anar(ife->ifm_media));
225 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
231 * If we're not currently selected, just return.
233 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
237 * Only used for autonegotiation.
239 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
243 * Is the interface even up?
245 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
249 * Only retry autonegotiation every 5 seconds.
251 if (++sc->mii_ticks != 5)
257 * Check to see if we have link. If we do, we don't
258 * need to restart the autonegotiation process. Read
259 * the BMSR twice in case it's latched.
261 reg = PHY_READ(sc, MII_BMSR) |
262 PHY_READ(sc, MII_BMSR);
267 if (mii_phy_auto(sc, 0) == EJUSTRETURN)
272 /* Update the media status. */
275 /* Callback if something changed. */
276 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
277 MIIBUS_STATCHG(sc->mii_dev);
278 sc->mii_active = mii->mii_media_active;
285 struct mii_softc *sc;
287 struct mii_data *mii = sc->mii_pdata;
288 int bmsr, bmcr, par, anlpar;
290 mii->mii_media_status = IFM_AVALID;
291 mii->mii_media_active = IFM_ETHER;
293 bmsr = PHY_READ(sc, MII_BMSR) |
294 PHY_READ(sc, MII_BMSR);
295 if (bmsr & BMSR_LINK)
296 mii->mii_media_status |= IFM_ACTIVE;
298 bmcr = PHY_READ(sc, MII_BMCR);
299 if (bmcr & BMCR_ISO) {
300 mii->mii_media_active |= IFM_NONE;
301 mii->mii_media_status = 0;
305 if (bmcr & BMCR_LOOP)
306 mii->mii_media_active |= IFM_LOOP;
308 if (bmcr & BMCR_AUTOEN) {
310 * The PAR status bits are only valid of autonegotiation
311 * has completed (or it's disabled).
313 if ((bmsr & BMSR_ACOMP) == 0) {
314 /* Erg, still trying, I guess... */
315 mii->mii_media_active |= IFM_NONE;
319 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) {
320 anlpar = PHY_READ(sc, MII_ANAR) &
321 PHY_READ(sc, MII_ANLPAR);
322 if (anlpar & ANLPAR_T4)
323 mii->mii_media_active |= IFM_100_T4;
324 else if (anlpar & ANLPAR_TX_FD)
325 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
326 else if (anlpar & ANLPAR_TX)
327 mii->mii_media_active |= IFM_100_TX;
328 else if (anlpar & ANLPAR_10_FD)
329 mii->mii_media_active |= IFM_10_T|IFM_FDX;
330 else if (anlpar & ANLPAR_10)
331 mii->mii_media_active |= IFM_10_T;
333 mii->mii_media_active |= IFM_NONE;
338 * Link partner is not capable of autonegotiation.
340 par = PHY_READ(sc, MII_AMPHY_DSCSR);
341 if (par & DSCSR_100FDX)
342 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
343 else if (par & DSCSR_100HDX)
344 mii->mii_media_active |= IFM_100_TX;
345 else if (par & DSCSR_10FDX)
346 mii->mii_media_active |= IFM_10_T|IFM_HDX;
347 else if (par & DSCSR_10HDX)
348 mii->mii_media_active |= IFM_10_T;
350 mii->mii_media_active = mii_media_from_bmcr(bmcr);