pnaphy.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 2000 Berkeley Software Design, Inc.
5 * Copyright (c) 1997, 1998, 1999, 2000
6 *	Bill Paul <wpaul@osd.bsdi.com>.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by Bill Paul.
19 * 4. Neither the name of the author nor the names of any co-contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
33 * THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
37__FBSDID("$FreeBSD: stable/11/sys/dev/mii/pnaphy.c 330897 2018-03-14 03:19:51Z eadler $");
38
39/*
40 * driver for homePNA PHYs
41 * This is really just a stub that allows us to identify homePNA-based
42 * transceicers and display the link status. MII-based homePNA PHYs
43 * only support one media type and no autonegotiation. If we were
44 * really clever, we could tweak some of the vendor-specific registers
45 * to optimize the link.
46 */
47
48#include <sys/param.h>
49#include <sys/systm.h>
50#include <sys/kernel.h>
51#include <sys/socket.h>
52#include <sys/errno.h>
53#include <sys/module.h>
54#include <sys/bus.h>
55
56#include <net/if.h>
57#include <net/if_media.h>
58
59#include <dev/mii/mii.h>
60#include <dev/mii/miivar.h>
61#include "miidevs.h"
62
63#include "miibus_if.h"
64
65static int pnaphy_probe(device_t);
66static int pnaphy_attach(device_t);
67
68static device_method_t pnaphy_methods[] = {
69	/* device interface */
70	DEVMETHOD(device_probe,		pnaphy_probe),
71	DEVMETHOD(device_attach,	pnaphy_attach),
72	DEVMETHOD(device_detach,	mii_phy_detach),
73	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
74	DEVMETHOD_END
75};
76
77static devclass_t pnaphy_devclass;
78
79static driver_t pnaphy_driver = {
80	"pnaphy",
81	pnaphy_methods,
82	sizeof(struct mii_softc)
83};
84
85DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0);
86
87static int	pnaphy_service(struct mii_softc *, struct mii_data *,int);
88
89static const struct mii_phydesc pnaphys[] = {
90	MII_PHY_DESC(yyAMD, 79c901home),
91	MII_PHY_END
92};
93
94static const struct mii_phy_funcs pnaphy_funcs = {
95	pnaphy_service,
96	ukphy_status,
97	mii_phy_reset
98};
99
100static int
101pnaphy_probe(device_t dev)
102{
103
104	return (mii_phy_dev_probe(dev, pnaphys, BUS_PROBE_DEFAULT));
105}
106
107static int
108pnaphy_attach(device_t dev)
109{
110
111	mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_IS_HPNA |
112	   MIIF_NOMANPAUSE, &pnaphy_funcs, 1);
113	return (0);
114}
115
116static int
117pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
118{
119	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
120
121	switch (cmd) {
122	case MII_POLLSTAT:
123		break;
124
125	case MII_MEDIACHG:
126		switch (IFM_SUBTYPE(ife->ifm_media)) {
127		case IFM_HPNA_1:
128			mii_phy_setmedia(sc);
129			break;
130		default:
131			return (EINVAL);
132		}
133		break;
134
135	case MII_TICK:
136		if (mii_phy_tick(sc) == EJUSTRETURN)
137			return (0);
138		break;
139	}
140
141	/* Update the media status. */
142	PHY_STATUS(sc);
143	if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T)
144		mii->mii_media_active = IFM_ETHER | IFM_HPNA_1;
145
146	/* Callback if something changed. */
147	mii_phy_update(sc, cmd);
148	return (0);
149}
150