inphy.c revision 164827 
1/*-
2 * Copyright (c) 2001 Jonathan Lemon
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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. Neither the name of the author nor the names of any co-contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD: head/sys/dev/mii/inphy.c 164827 2006-12-02 15:32:34Z marius $");
33
34/*
35 * driver for Intel 82553 and 82555 PHYs
36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/kernel.h>
41#include <sys/module.h>
42#include <sys/socket.h>
43#include <sys/bus.h>
44
45#include <net/if.h>
46#include <net/if_media.h>
47
48#include <dev/mii/mii.h>
49#include <dev/mii/miivar.h>
50#include "miidevs.h"
51
52#include <dev/mii/inphyreg.h>
53
54#include "miibus_if.h"
55
56static int 	inphy_probe(device_t dev);
57static int 	inphy_attach(device_t dev);
58
59static device_method_t inphy_methods[] = {
60	/* device interface */
61	DEVMETHOD(device_probe,		inphy_probe),
62	DEVMETHOD(device_attach,	inphy_attach),
63	DEVMETHOD(device_detach,	mii_phy_detach),
64	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
65	{ 0, 0 }
66};
67
68static devclass_t inphy_devclass;
69
70static driver_t inphy_driver = {
71	"inphy",
72	inphy_methods,
73	sizeof(struct mii_softc)
74};
75
76DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0);
77
78static int	inphy_service(struct mii_softc *, struct mii_data *, int);
79static void	inphy_status(struct mii_softc *);
80
81static const struct mii_phydesc inphys[] = {
82	MII_PHY_DESC(INTEL, I82553C),
83	MII_PHY_DESC(INTEL, I82555),
84	MII_PHY_DESC(INTEL, I82562EM),
85	MII_PHY_DESC(INTEL, I82562ET),
86	MII_PHY_DESC(xxINTEL, I82553AB),
87	MII_PHY_END
88};
89
90static int
91inphy_probe(device_t dev)
92{
93
94	return (mii_phy_dev_probe(dev, inphys, BUS_PROBE_DEFAULT));
95}
96
97static int
98inphy_attach(device_t dev)
99{
100	struct mii_softc *sc;
101	struct mii_attach_args *ma;
102	struct mii_data *mii;
103
104	sc = device_get_softc(dev);
105	ma = device_get_ivars(dev);
106	sc->mii_dev = device_get_parent(dev);
107	mii = device_get_softc(sc->mii_dev);
108	LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
109
110	sc->mii_inst = mii->mii_instance;
111	sc->mii_phy = ma->mii_phyno;
112	sc->mii_service = inphy_service;
113	sc->mii_pdata = mii;
114	mii->mii_instance++;
115
116	ifmedia_add(&mii->mii_media,
117	    IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
118	    BMCR_LOOP|BMCR_S100, NULL);
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
129	return (0);
130}
131
132static int
133inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
134{
135	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
136	int reg;
137
138	switch (cmd) {
139	case MII_POLLSTAT:
140		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
141			return (0);
142		break;
143
144	case MII_MEDIACHG:
145		if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
146			reg = PHY_READ(sc, MII_BMCR);
147			PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
148			return (0);
149		}
150
151		/*
152		 * If the interface is not up, don't do anything.
153		 */
154		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
155			break;
156
157		mii_phy_setmedia(sc);
158		break;
159
160	case MII_TICK:
161		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
162			return (0);
163		if (mii_phy_tick(sc) == EJUSTRETURN)
164			return (0);
165		break;
166	}
167
168	/* Update the media status. */
169	inphy_status(sc);
170
171	/* Callback if something changed. */
172	mii_phy_update(sc, cmd);
173	return (0);
174}
175
176static void
177inphy_status(struct mii_softc *sc)
178{
179	struct mii_data *mii = sc->mii_pdata;
180	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
181	int bmsr, bmcr, scr;
182
183	mii->mii_media_status = IFM_AVALID;
184	mii->mii_media_active = IFM_ETHER;
185
186	bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
187	if (bmsr & BMSR_LINK)
188		mii->mii_media_status |= IFM_ACTIVE;
189
190	bmcr = PHY_READ(sc, MII_BMCR);
191	if (bmcr & BMCR_ISO) {
192		mii->mii_media_active |= IFM_NONE;
193		mii->mii_media_status = 0;
194		return;
195	}
196
197	if (bmcr & BMCR_LOOP)
198		mii->mii_media_active |= IFM_LOOP;
199
200	if (bmcr & BMCR_AUTOEN) {
201		if ((bmsr & BMSR_ACOMP) == 0) {
202			mii->mii_media_active |= IFM_NONE;
203			return;
204		}
205
206		scr = PHY_READ(sc, MII_INPHY_SCR);
207		if (scr & SCR_S100)
208			mii->mii_media_active |= IFM_100_TX;
209		else
210			mii->mii_media_active |= IFM_10_T;
211		if (scr & SCR_FDX)
212			mii->mii_media_active |= IFM_FDX;
213	} else
214		mii->mii_media_active = ife->ifm_media;
215}
216