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("$FreeBSD$");
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_var.h>
47#include <net/if_media.h>
48
49#include <dev/mii/mii.h>
50#include <dev/mii/miivar.h>
51#include "miidevs.h"
52
53#include <dev/fxp/inphyreg.h>
54
55#include "miibus_if.h"
56
57static int 	inphy_probe(device_t dev);
58static int 	inphy_attach(device_t dev);
59
60static device_method_t inphy_methods[] = {
61	/* device interface */
62	DEVMETHOD(device_probe,		inphy_probe),
63	DEVMETHOD(device_attach,	inphy_attach),
64	DEVMETHOD(device_detach,	mii_phy_detach),
65	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
66	{ 0, 0 }
67};
68
69static devclass_t inphy_devclass;
70
71static driver_t inphy_driver = {
72	"inphy",
73	inphy_methods,
74	sizeof(struct mii_softc)
75};
76
77DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0);
78
79static int	inphy_service(struct mii_softc *, struct mii_data *, int);
80static void	inphy_status(struct mii_softc *);
81static void	inphy_reset(struct mii_softc *);
82
83static const struct mii_phydesc inphys[] = {
84	MII_PHY_DESC(xxINTEL, I82553),
85	MII_PHY_DESC(yyINTEL, I82553),
86	MII_PHY_DESC(yyINTEL, I82555),
87	MII_PHY_DESC(yyINTEL, I82562EM),
88	MII_PHY_DESC(yyINTEL, I82562ET),
89	MII_PHY_END
90};
91
92static const struct mii_phy_funcs inphy_funcs = {
93	inphy_service,
94	inphy_status,
95	inphy_reset
96};
97
98static int
99inphy_probe(device_t dev)
100{
101
102	return (mii_phy_dev_probe(dev, inphys, BUS_PROBE_DEFAULT));
103}
104
105static int
106inphy_attach(device_t dev)
107{
108
109	mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &inphy_funcs, 1);
110	return (0);
111}
112
113static int
114inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
115{
116
117	switch (cmd) {
118	case MII_POLLSTAT:
119		break;
120
121	case MII_MEDIACHG:
122		/*
123		 * If the interface is not up, don't do anything.
124		 */
125		if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
126			break;
127
128		mii_phy_setmedia(sc);
129		break;
130
131	case MII_TICK:
132		if (mii_phy_tick(sc) == EJUSTRETURN)
133			return (0);
134		break;
135	}
136
137	/* Update the media status. */
138	PHY_STATUS(sc);
139
140	/* Callback if something changed. */
141	mii_phy_update(sc, cmd);
142	return (0);
143}
144
145static void
146inphy_status(struct mii_softc *sc)
147{
148	struct mii_data *mii = sc->mii_pdata;
149	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
150	int bmsr, bmcr, scr;
151
152	mii->mii_media_status = IFM_AVALID;
153	mii->mii_media_active = IFM_ETHER;
154
155	bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
156	if (bmsr & BMSR_LINK)
157		mii->mii_media_status |= IFM_ACTIVE;
158
159	bmcr = PHY_READ(sc, MII_BMCR);
160	if (bmcr & BMCR_ISO) {
161		mii->mii_media_active |= IFM_NONE;
162		mii->mii_media_status = 0;
163		return;
164	}
165
166	if (bmcr & BMCR_LOOP)
167		mii->mii_media_active |= IFM_LOOP;
168
169	if (bmcr & BMCR_AUTOEN) {
170		if ((bmsr & BMSR_ACOMP) == 0) {
171			mii->mii_media_active |= IFM_NONE;
172			return;
173		}
174
175		scr = PHY_READ(sc, MII_INPHY_SCR);
176		if (scr & SCR_S100)
177			mii->mii_media_active |= IFM_100_TX;
178		else
179			mii->mii_media_active |= IFM_10_T;
180		if (scr & SCR_FDX)
181			mii->mii_media_active |=
182			    IFM_FDX | mii_phy_flowstatus(sc);
183		else
184			mii->mii_media_active |= IFM_HDX;
185	} else
186		mii->mii_media_active = ife->ifm_media;
187}
188
189static void
190inphy_reset(struct mii_softc *sc)
191{
192
193	mii_phy_reset(sc);
194
195	/* Ensure Bay flow control is disabled. */
196	PHY_WRITE(sc, MII_INPHY_SCR,
197	    PHY_READ(sc, MII_INPHY_SCR) & ~SCR_FLOWCTL);
198}
199