inphy.c revision 215716 
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 215716 2010-11-22 21:24:29Z 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 = ma->mii_data;
108	LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
109
110	sc->mii_flags = miibus_get_flags(dev);
111	sc->mii_inst = mii->mii_instance++;
112	sc->mii_phy = ma->mii_phyno;
113	sc->mii_service = inphy_service;
114	sc->mii_pdata = mii;
115
116	sc->mii_flags |= MIIF_NOMANPAUSE;
117
118	ifmedia_add(&mii->mii_media,
119	    IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
120	    MII_MEDIA_100_TX, NULL);
121
122	mii_phy_reset(sc);
123
124	sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
125	device_printf(dev, " ");
126	mii_phy_add_media(sc);
127	printf("\n");
128
129	MIIBUS_MEDIAINIT(sc->mii_dev);
130
131	return (0);
132}
133
134static int
135inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
136{
137
138	switch (cmd) {
139	case MII_POLLSTAT:
140		break;
141
142	case MII_MEDIACHG:
143		/*
144		 * If the interface is not up, don't do anything.
145		 */
146		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
147			break;
148
149		mii_phy_setmedia(sc);
150		break;
151
152	case MII_TICK:
153		if (mii_phy_tick(sc) == EJUSTRETURN)
154			return (0);
155		break;
156	}
157
158	/* Update the media status. */
159	inphy_status(sc);
160
161	/* Callback if something changed. */
162	mii_phy_update(sc, cmd);
163	return (0);
164}
165
166static void
167inphy_status(struct mii_softc *sc)
168{
169	struct mii_data *mii = sc->mii_pdata;
170	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
171	int bmsr, bmcr, scr;
172
173	mii->mii_media_status = IFM_AVALID;
174	mii->mii_media_active = IFM_ETHER;
175
176	bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
177	if (bmsr & BMSR_LINK)
178		mii->mii_media_status |= IFM_ACTIVE;
179
180	bmcr = PHY_READ(sc, MII_BMCR);
181	if (bmcr & BMCR_ISO) {
182		mii->mii_media_active |= IFM_NONE;
183		mii->mii_media_status = 0;
184		return;
185	}
186
187	if (bmcr & BMCR_LOOP)
188		mii->mii_media_active |= IFM_LOOP;
189
190	if (bmcr & BMCR_AUTOEN) {
191		if ((bmsr & BMSR_ACOMP) == 0) {
192			mii->mii_media_active |= IFM_NONE;
193			return;
194		}
195
196		scr = PHY_READ(sc, MII_INPHY_SCR);
197		if (scr & SCR_S100)
198			mii->mii_media_active |= IFM_100_TX;
199		else
200			mii->mii_media_active |= IFM_10_T;
201		if (scr & SCR_FDX)
202			mii->mii_media_active |=
203			    IFM_FDX | mii_phy_flowstatus(sc);
204		else
205			mii->mii_media_active |= IFM_HDX;
206	} else
207		mii->mii_media_active = ife->ifm_media;
208}
209