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.
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
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>
58 #include <dev/mii/mii.h>
59 #include <dev/mii/miivar.h>
62 #include "miibus_if.h"
64 static int pnaphy_probe(device_t);
65 static int pnaphy_attach(device_t);
67 static device_method_t pnaphy_methods[] = {
68 /* device interface */
69 DEVMETHOD(device_probe, pnaphy_probe),
70 DEVMETHOD(device_attach, pnaphy_attach),
71 DEVMETHOD(device_detach, mii_phy_detach),
72 DEVMETHOD(device_shutdown, bus_generic_shutdown),
76 static devclass_t pnaphy_devclass;
78 static driver_t pnaphy_driver = {
81 sizeof(struct mii_softc)
84 DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0);
86 static int pnaphy_service(struct mii_softc *, struct mii_data *,int);
89 pnaphy_probe(device_t 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_AMD &&
97 MII_MODEL(ma->mii_id2) == MII_MODEL_AMD_79c978) {
98 device_set_desc(dev, MII_STR_AMD_79c978);
106 pnaphy_attach(device_t dev)
108 struct mii_softc *sc;
109 struct mii_attach_args *ma;
110 struct mii_data *mii;
111 const char *sep = "";
113 sc = device_get_softc(dev);
114 ma = device_get_ivars(dev);
115 sc->mii_dev = device_get_parent(dev);
116 mii = device_get_softc(sc->mii_dev);
117 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
119 sc->mii_inst = mii->mii_instance;
120 sc->mii_phy = ma->mii_phyno;
121 sc->mii_service = pnaphy_service;
126 sc->mii_flags |= MIIF_NOISOLATE;
128 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
129 #define PRINT(s) printf("%s%s", sep, s); sep = ", "
133 sc->mii_capabilities =
134 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
135 device_printf(dev, " ");
136 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
137 printf("no media present");
139 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, sc->mii_inst), 0);
142 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
150 MIIBUS_MEDIAINIT(sc->mii_dev);
156 pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
158 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
164 * If we're not polling our PHY instance, just return.
166 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
172 * If the media indicates a different PHY instance,
175 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
176 reg = PHY_READ(sc, MII_BMCR);
177 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
182 * If the interface is not up, don't do anything.
184 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
187 switch (IFM_SUBTYPE(ife->ifm_media)) {
195 * BMCR data is stored in the ifmedia entry.
197 PHY_WRITE(sc, MII_ANAR,
198 mii_anar(ife->ifm_media));
199 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
205 * If we're not currently selected, just return.
207 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
209 if (mii_phy_tick(sc) == EJUSTRETURN)
214 /* Update the media status. */
216 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T)
217 mii->mii_media_active = IFM_ETHER|IFM_HPNA_1;
219 /* Callback if something changed. */
220 mii_phy_update(sc, cmd);