2 * Copyright (c) 2000 Berkeley Software Design, Inc.
3 * Copyright (c) 1997, 1998, 1999, 2000
4 * Bill Paul <wpaul@osd.bsdi.com>. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Bill Paul.
17 * 4. Neither the name of the author nor the names of any co-contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
33 * $FreeBSD: src/sys/dev/mii/pnaphy.c,v 1.1.2.3 2002/11/08 21:53:49 semenu Exp $
34 * $DragonFly: src/sys/dev/netif/mii_layer/pnaphy.c,v 1.7 2005/02/21 18:40:36 joerg Exp $
38 * driver for homePNA PHYs
39 * This is really just a stub that allows us to identify homePNA-based
40 * transceicers and display the link status. MII-based homePNA PHYs
41 * only support one media type and no autonegotiation. If we were
42 * really clever, we could tweak some of the vendor-specific registers
43 * to optimize the link.
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/kernel.h>
49 #include <sys/socket.h>
50 #include <sys/errno.h>
51 #include <sys/module.h>
55 #include <net/if_media.h>
57 #include <machine/clock.h>
63 #include "miibus_if.h"
65 static int pnaphy_probe (device_t);
66 static int pnaphy_attach (device_t);
67 static int pnaphy_detach (device_t);
69 static device_method_t pnaphy_methods[] = {
70 /* device interface */
71 DEVMETHOD(device_probe, pnaphy_probe),
72 DEVMETHOD(device_attach, pnaphy_attach),
73 DEVMETHOD(device_detach, pnaphy_detach),
74 DEVMETHOD(device_shutdown, bus_generic_shutdown),
78 static devclass_t pnaphy_devclass;
80 static driver_t pnaphy_driver = {
83 sizeof(struct mii_softc)
86 DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0);
88 int pnaphy_service (struct mii_softc *, struct mii_data *, int);
95 struct mii_attach_args *ma;
97 ma = device_get_ivars(dev);
99 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_AMD &&
100 MII_MODEL(ma->mii_id2) == MII_MODEL_AMD_79c978) {
101 device_set_desc(dev, MII_STR_AMD_79c978);
112 struct mii_softc *sc;
113 struct mii_attach_args *ma;
114 struct mii_data *mii;
115 const char *sep = "";
117 sc = device_get_softc(dev);
118 ma = device_get_ivars(dev);
120 sc->mii_dev = device_get_parent(dev);
121 mii = device_get_softc(sc->mii_dev);
122 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
124 sc->mii_inst = mii->mii_instance;
125 sc->mii_phy = ma->mii_phyno;
126 sc->mii_service = pnaphy_service;
131 sc->mii_flags |= MIIF_NOISOLATE;
133 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
134 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
138 sc->mii_capabilities =
139 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
140 device_printf(dev, " ");
141 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
142 printf("no media present");
144 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, sc->mii_inst), 0);
147 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
155 MIIBUS_MEDIAINIT(sc->mii_dev);
160 static int pnaphy_detach(dev)
163 struct mii_softc *sc;
164 struct mii_data *mii;
166 sc = device_get_softc(dev);
167 mii = device_get_softc(device_get_parent(dev));
168 mii_phy_auto_stop(sc);
170 LIST_REMOVE(sc, mii_list);
176 pnaphy_service(sc, mii, cmd)
177 struct mii_softc *sc;
178 struct mii_data *mii;
181 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
187 * If we're not polling our PHY instance, just return.
189 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
195 * If the media indicates a different PHY instance,
198 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
199 reg = PHY_READ(sc, MII_BMCR);
200 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
205 * If the interface is not up, don't do anything.
207 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
210 switch (IFM_SUBTYPE(ife->ifm_media)) {
218 * BMCR data is stored in the ifmedia entry.
220 PHY_WRITE(sc, MII_ANAR,
221 mii_anar(ife->ifm_media));
222 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
228 * If we're not currently selected, just return.
230 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
234 * Only used for autonegotiation.
236 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
240 * Is the interface even up?
242 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
246 * Check to see if we have link. If we do, we don't
247 * need to restart the autonegotiation process. Read
248 * the BMSR twice in case it's latched.
250 reg = PHY_READ(sc, MII_BMSR) |
251 PHY_READ(sc, MII_BMSR);
256 * Only retry autonegotiation every 5 seconds.
258 if (++sc->mii_ticks != 5)
263 if (mii_phy_auto(sc, 0) == EJUSTRETURN)
268 /* Update the media status. */
270 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T)
271 mii->mii_media_active = IFM_ETHER | IFM_HPNA_1;
273 /* Callback if something changed. */
274 if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
275 MIIBUS_STATCHG(sc->mii_dev);
276 sc->mii_active = mii->mii_media_active;