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.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
37 * driver for AMD AM79c873 PHYs
38 * This driver also works for the Davicom DM9101 PHY, which appears to
39 * be an AM79c873 workalike.
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
45 #include <sys/module.h>
46 #include <sys/socket.h>
50 #include <net/if_media.h>
52 #include <dev/mii/mii.h>
53 #include <dev/mii/miivar.h>
56 #include <dev/mii/amphyreg.h>
58 #include "miibus_if.h"
60 static int amphy_probe(device_t);
61 static int amphy_attach(device_t);
63 static device_method_t amphy_methods[] = {
64 /* device interface */
65 DEVMETHOD(device_probe, amphy_probe),
66 DEVMETHOD(device_attach, amphy_attach),
67 DEVMETHOD(device_detach, mii_phy_detach),
68 DEVMETHOD(device_shutdown, bus_generic_shutdown),
72 static devclass_t amphy_devclass;
74 static driver_t amphy_driver = {
77 sizeof(struct mii_softc)
80 DRIVER_MODULE(amphy, miibus, amphy_driver, amphy_devclass, 0, 0);
82 static int amphy_service(struct mii_softc *, struct mii_data *, int);
83 static void amphy_status(struct mii_softc *);
89 struct mii_attach_args *ma;
91 ma = device_get_ivars(dev);
93 if ((MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxAMD ||
94 MII_MODEL(ma->mii_id2) != MII_MODEL_xxAMD_79C873) &&
95 (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_xxDAVICOM ||
96 MII_MODEL(ma->mii_id2) != MII_MODEL_xxDAVICOM_DM9101))
99 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxAMD)
100 device_set_desc(dev, MII_STR_xxAMD_79C873);
101 else if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxDAVICOM)
102 device_set_desc(dev, MII_STR_xxDAVICOM_DM9101);
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);
117 sc->mii_dev = device_get_parent(dev);
118 mii = device_get_softc(sc->mii_dev);
119 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
121 sc->mii_inst = mii->mii_instance;
122 sc->mii_phy = ma->mii_phyno;
123 sc->mii_service = amphy_service;
126 sc->mii_flags |= MIIF_NOISOLATE;
129 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
131 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
134 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
135 BMCR_LOOP|BMCR_S100);
140 sc->mii_capabilities =
141 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
142 device_printf(dev, " ");
146 MIIBUS_MEDIAINIT(sc->mii_dev);
151 amphy_service(sc, mii, cmd)
152 struct mii_softc *sc;
153 struct mii_data *mii;
156 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
162 * If we're not polling our PHY instance, just return.
164 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
170 * If the media indicates a different PHY instance,
173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
174 reg = PHY_READ(sc, MII_BMCR);
175 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
180 * If the interface is not up, don't do anything.
182 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
185 switch (IFM_SUBTYPE(ife->ifm_media)) {
188 * If we're already in auto mode, just return.
190 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
192 (void) mii_phy_auto(sc);
196 * XXX Not supported as a manual setting right now.
201 * BMCR data is stored in the ifmedia entry.
203 PHY_WRITE(sc, MII_ANAR,
204 mii_anar(ife->ifm_media));
205 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
211 * If we're not currently selected, just return.
213 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
215 if (mii_phy_tick(sc) == EJUSTRETURN)
220 /* Update the media status. */
223 /* Callback if something changed. */
224 mii_phy_update(sc, cmd);
230 struct mii_softc *sc;
232 struct mii_data *mii = sc->mii_pdata;
233 int bmsr, bmcr, par, anlpar;
235 mii->mii_media_status = IFM_AVALID;
236 mii->mii_media_active = IFM_ETHER;
238 bmsr = PHY_READ(sc, MII_BMSR) |
239 PHY_READ(sc, MII_BMSR);
240 if (bmsr & BMSR_LINK)
241 mii->mii_media_status |= IFM_ACTIVE;
243 bmcr = PHY_READ(sc, MII_BMCR);
244 if (bmcr & BMCR_ISO) {
245 mii->mii_media_active |= IFM_NONE;
246 mii->mii_media_status = 0;
250 if (bmcr & BMCR_LOOP)
251 mii->mii_media_active |= IFM_LOOP;
253 if (bmcr & BMCR_AUTOEN) {
255 * The PAR status bits are only valid of autonegotiation
256 * has completed (or it's disabled).
258 if ((bmsr & BMSR_ACOMP) == 0) {
259 /* Erg, still trying, I guess... */
260 mii->mii_media_active |= IFM_NONE;
264 if (PHY_READ(sc, MII_ANER) & ANER_LPAN) {
265 anlpar = PHY_READ(sc, MII_ANAR) &
266 PHY_READ(sc, MII_ANLPAR);
267 if (anlpar & ANLPAR_T4)
268 mii->mii_media_active |= IFM_100_T4;
269 else if (anlpar & ANLPAR_TX_FD)
270 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
271 else if (anlpar & ANLPAR_TX)
272 mii->mii_media_active |= IFM_100_TX;
273 else if (anlpar & ANLPAR_10_FD)
274 mii->mii_media_active |= IFM_10_T|IFM_FDX;
275 else if (anlpar & ANLPAR_10)
276 mii->mii_media_active |= IFM_10_T;
278 mii->mii_media_active |= IFM_NONE;
283 * Link partner is not capable of autonegotiation.
285 par = PHY_READ(sc, MII_AMPHY_DSCSR);
286 if (par & DSCSR_100FDX)
287 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
288 else if (par & DSCSR_100HDX)
289 mii->mii_media_active |= IFM_100_TX;
290 else if (par & DSCSR_10FDX)
291 mii->mii_media_active |= IFM_10_T|IFM_HDX;
292 else if (par & DSCSR_10HDX)
293 mii->mii_media_active |= IFM_10_T;
295 mii->mii_media_active = mii_media_from_bmcr(bmcr);