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