axphy.c revision 331722 
1/*-
2 * Copyright (c) 2009, M. Warner Losh
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 unmodified, this list of conditions, and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/sys/dev/mii/axphy.c 331722 2018-03-29 02:50:57Z eadler $");
29
30/*
31 * driver for internal phy in the AX88x9x chips.
32 */
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/module.h>
38#include <sys/socket.h>
39#include <sys/bus.h>
40
41#include <net/if.h>
42#include <net/if_media.h>
43
44#include <dev/mii/mii.h>
45#include <dev/mii/miivar.h>
46#include "miidevs.h"
47
48#include "miibus_if.h"
49
50static int 	axphy_probe(device_t dev);
51static int 	axphy_attach(device_t dev);
52
53static device_method_t axphy_methods[] = {
54	/* device interface */
55	DEVMETHOD(device_probe,		axphy_probe),
56	DEVMETHOD(device_attach,	axphy_attach),
57	DEVMETHOD(device_detach,	mii_phy_detach),
58	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
59	DEVMETHOD_END
60};
61
62static devclass_t axphy_devclass;
63
64static driver_t axphy_driver = {
65	"axphy",
66	axphy_methods,
67	sizeof(struct mii_softc)
68};
69
70DRIVER_MODULE(axphy, miibus, axphy_driver, axphy_devclass, 0, 0);
71
72static int	axphy_service(struct mii_softc *, struct mii_data *, int);
73static void	axphy_status(struct mii_softc *);
74
75static const struct mii_phydesc axphys[] = {
76	MII_PHY_DESC(xxASIX, AX88X9X),
77	MII_PHY_END
78};
79
80static const struct mii_phy_funcs axphy_funcs = {
81	axphy_service,
82	axphy_status,
83	mii_phy_reset
84};
85
86static int
87axphy_probe(device_t dev)
88{
89
90	return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT));
91}
92
93static int
94axphy_attach(device_t dev)
95{
96	struct mii_softc *sc;
97
98	sc = device_get_softc(dev);
99
100	mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
101	    &axphy_funcs, 1);
102	mii_phy_setmedia(sc);
103
104	return (0);
105}
106
107static int
108axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
109{
110
111	switch (cmd) {
112	case MII_POLLSTAT:
113		break;
114
115	case MII_MEDIACHG:
116		mii_phy_setmedia(sc);
117		break;
118
119	case MII_TICK:
120		if (mii_phy_tick(sc) == EJUSTRETURN)
121			return (0);
122		break;
123	}
124
125	/* Update the media status. */
126	PHY_STATUS(sc);
127
128	/* Callback if something changed. */
129	mii_phy_update(sc, cmd);
130	return (0);
131}
132
133static void
134axphy_status(struct mii_softc *sc)
135{
136	struct mii_data *mii = sc->mii_pdata;
137	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
138	int bmsr, bmcr;
139
140	mii->mii_media_status = IFM_AVALID;
141	mii->mii_media_active = IFM_ETHER;
142
143	bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
144	if (bmsr & BMSR_LINK)
145		mii->mii_media_status |= IFM_ACTIVE;
146
147	bmcr = PHY_READ(sc, MII_BMCR);
148	if (bmcr & BMCR_ISO) {
149		mii->mii_media_active |= IFM_NONE;
150		mii->mii_media_status = 0;
151		return;
152	}
153
154	if (bmcr & BMCR_LOOP)
155		mii->mii_media_active |= IFM_LOOP;
156
157	if (bmcr & BMCR_AUTOEN) {
158		if ((bmsr & BMSR_ACOMP) == 0) {
159			mii->mii_media_active |= IFM_NONE;
160			return;
161		}
162
163#if 0
164		scr = PHY_READ(sc, MII_AXPHY_SCR);
165		if (scr & SCR_S100)
166			mii->mii_media_active |= IFM_100_TX;
167		else
168			mii->mii_media_active |= IFM_10_T;
169		if (scr & SCR_FDX)
170			mii->mii_media_active |=
171			    IFM_FDX | mii_phy_flowstatus(sc);
172		else
173			mii->mii_media_active |= IFM_HDX;
174#endif
175	} else
176		mii->mii_media_active = ife->ifm_media;
177}
178