inphy.c revision 119418 
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 119418 2003-08-24 17:55:58Z obrien $");
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/socket.h>
42#include <sys/bus.h>
43
44#include <net/if.h>
45#include <net/if_media.h>
46
47#include <dev/mii/mii.h>
48#include <dev/mii/miivar.h>
49#include "miidevs.h"
50
51#include <dev/mii/inphyreg.h>
52
53#include "miibus_if.h"
54
55static int 	inphy_probe(device_t dev);
56static int 	inphy_attach(device_t dev);
57
58static device_method_t inphy_methods[] = {
59	/* device interface */
60	DEVMETHOD(device_probe,		inphy_probe),
61	DEVMETHOD(device_attach,	inphy_attach),
62	DEVMETHOD(device_detach,	mii_phy_detach),
63	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
64	{ 0, 0 }
65};
66
67static devclass_t inphy_devclass;
68
69static driver_t inphy_driver = {
70	"inphy",
71	inphy_methods,
72	sizeof(struct mii_softc)
73};
74
75DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0);
76
77static int	inphy_service(struct mii_softc *, struct mii_data *, int);
78static void	inphy_status(struct mii_softc *);
79
80static int
81inphy_probe(device_t dev)
82{
83	struct mii_attach_args *ma;
84
85	ma = device_get_ivars(dev);
86
87	/* Intel 82553 A/B steppings */
88	if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxINTEL &&
89	    MII_MODEL(ma->mii_id2) == MII_MODEL_xxINTEL_I82553AB) {
90		device_set_desc(dev, MII_STR_xxINTEL_I82553AB);
91		return (0);
92	}
93
94	if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_INTEL) {
95		switch (MII_MODEL(ma->mii_id2)) {
96		case MII_MODEL_INTEL_I82555:
97			device_set_desc(dev, MII_STR_INTEL_I82555);
98			return (0);
99		case MII_MODEL_INTEL_I82553C:
100			device_set_desc(dev, MII_STR_INTEL_I82553C);
101			return (0);
102		case MII_MODEL_INTEL_I82562EM:
103			device_set_desc(dev, MII_STR_INTEL_I82562EM);
104			return (0);
105		case MII_MODEL_INTEL_I82562ET:
106			device_set_desc(dev, MII_STR_INTEL_I82562ET);
107			return (0);
108		}
109	}
110
111	return (ENXIO);
112}
113
114static int
115inphy_attach(device_t dev)
116{
117	struct mii_softc *sc;
118	struct mii_attach_args *ma;
119	struct mii_data *mii;
120
121	sc = device_get_softc(dev);
122	ma = device_get_ivars(dev);
123	sc->mii_dev = device_get_parent(dev);
124	mii = device_get_softc(sc->mii_dev);
125	LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
126
127	sc->mii_inst = mii->mii_instance;
128	sc->mii_phy = ma->mii_phyno;
129	sc->mii_service = inphy_service;
130	sc->mii_pdata = mii;
131	mii->mii_instance++;
132
133#if 0
134	sc->mii_flags |= MIIF_NOISOLATE;
135#endif
136
137	ifmedia_add(&mii->mii_media,
138	    IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
139	    BMCR_LOOP|BMCR_S100, NULL);
140
141	mii_phy_reset(sc);
142
143	sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
144	device_printf(dev, " ");
145	mii_phy_add_media(sc);
146	printf("\n");
147
148	MIIBUS_MEDIAINIT(sc->mii_dev);
149
150	return (0);
151}
152
153static int
154inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
155{
156	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
157	int reg;
158
159	switch (cmd) {
160	case MII_POLLSTAT:
161		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
162			return (0);
163		break;
164
165	case MII_MEDIACHG:
166		if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
167			reg = PHY_READ(sc, MII_BMCR);
168			PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
169			return (0);
170		}
171
172		/*
173		 * If the interface is not up, don't do anything.
174		 */
175		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
176			break;
177
178		mii_phy_setmedia(sc);
179		break;
180
181	case MII_TICK:
182		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
183			return (0);
184		if (mii_phy_tick(sc) == EJUSTRETURN)
185			return (0);
186		break;
187	}
188
189	/* Update the media status. */
190	inphy_status(sc);
191
192	/* Callback if something changed. */
193	mii_phy_update(sc, cmd);
194	return (0);
195}
196
197static void
198inphy_status(struct mii_softc *sc)
199{
200	struct mii_data *mii = sc->mii_pdata;
201	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
202	int bmsr, bmcr, scr;
203
204	mii->mii_media_status = IFM_AVALID;
205	mii->mii_media_active = IFM_ETHER;
206
207	bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
208	if (bmsr & BMSR_LINK)
209		mii->mii_media_status |= IFM_ACTIVE;
210
211	bmcr = PHY_READ(sc, MII_BMCR);
212	if (bmcr & BMCR_ISO) {
213		mii->mii_media_active |= IFM_NONE;
214		mii->mii_media_status = 0;
215		return;
216	}
217
218	if (bmcr & BMCR_LOOP)
219		mii->mii_media_active |= IFM_LOOP;
220
221	if (bmcr & BMCR_AUTOEN) {
222		if ((bmsr & BMSR_ACOMP) == 0) {
223			mii->mii_media_active |= IFM_NONE;
224			return;
225		}
226
227		scr = PHY_READ(sc, MII_INPHY_SCR);
228		if (scr & SCR_S100)
229			mii->mii_media_active |= IFM_100_TX;
230		else
231			mii->mii_media_active |= IFM_10_T;
232		if (scr & SCR_FDX)
233			mii->mii_media_active |= IFM_FDX;
234	} else
235		mii->mii_media_active = ife->ifm_media;
236}
237