pnaphy.c revision 214263 
1/*-
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.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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.
20 *
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.
32 */
33
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD: head/sys/dev/mii/pnaphy.c 214263 2010-10-24 11:38:25Z marius $");
36
37/*
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.
44 */
45
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>
52#include <sys/bus.h>
53
54#include <net/if.h>
55#include <net/if_media.h>
56
57#include <dev/mii/mii.h>
58#include <dev/mii/miivar.h>
59#include "miidevs.h"
60
61#include "miibus_if.h"
62
63static int pnaphy_probe(device_t);
64static int pnaphy_attach(device_t);
65
66static device_method_t pnaphy_methods[] = {
67	/* device interface */
68	DEVMETHOD(device_probe,		pnaphy_probe),
69	DEVMETHOD(device_attach,	pnaphy_attach),
70	DEVMETHOD(device_detach,	mii_phy_detach),
71	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
72	{ 0, 0 }
73};
74
75static devclass_t pnaphy_devclass;
76
77static driver_t pnaphy_driver = {
78	"pnaphy",
79	pnaphy_methods,
80	sizeof(struct mii_softc)
81};
82
83DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0);
84
85static int	pnaphy_service(struct mii_softc *, struct mii_data *,int);
86
87static const struct mii_phydesc pnaphys[] = {
88	MII_PHY_DESC(AMD, 79c978),
89	MII_PHY_END
90};
91
92static int
93pnaphy_probe(device_t dev)
94{
95
96	return (mii_phy_dev_probe(dev, pnaphys, BUS_PROBE_DEFAULT));
97}
98
99static int
100pnaphy_attach(device_t dev)
101{
102	struct mii_softc *sc;
103	struct mii_attach_args *ma;
104	struct mii_data *mii;
105
106	sc = device_get_softc(dev);
107	ma = device_get_ivars(dev);
108	sc->mii_dev = device_get_parent(dev);
109	mii = ma->mii_data;
110	LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
111
112	sc->mii_flags = miibus_get_flags(dev);
113	sc->mii_inst = mii->mii_instance++;
114	sc->mii_phy = ma->mii_phyno;
115	sc->mii_service = pnaphy_service;
116	sc->mii_pdata = mii;
117
118	sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP | MIIF_IS_HPNA;
119
120	mii_phy_reset(sc);
121
122	sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
123	device_printf(dev, " ");
124	mii_phy_add_media(sc);
125	printf("\n");
126
127	MIIBUS_MEDIAINIT(sc->mii_dev);
128	return (0);
129}
130
131static int
132pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
133{
134	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
135
136	switch (cmd) {
137	case MII_POLLSTAT:
138		break;
139
140	case MII_MEDIACHG:
141		/*
142		 * If the interface is not up, don't do anything.
143		 */
144		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
145			break;
146
147		switch (IFM_SUBTYPE(ife->ifm_media)) {
148		case IFM_HPNA_1:
149			mii_phy_setmedia(sc);
150			break;
151		default:
152			return (EINVAL);
153		}
154		break;
155
156	case MII_TICK:
157		if (mii_phy_tick(sc) == EJUSTRETURN)
158			return (0);
159		break;
160	}
161
162	/* Update the media status. */
163	ukphy_status(sc);
164	if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T)
165		mii->mii_media_active = IFM_ETHER | IFM_HPNA_1;
166
167	/* Callback if something changed. */
168	mii_phy_update(sc, cmd);
169	return (0);
170}
171