1/*	$OpenBSD: txphy.c,v 1.14 2024/05/27 03:56:59 jsg Exp $	*/
2
3/*
4 * Copyright (c) 1999 Jason L. Wright (jason@thought.net)
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/*
30 * Driver for the Texas Instruments TNETE2101 phy.
31 */
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/device.h>
37#include <sys/socket.h>
38#include <sys/errno.h>
39
40#include <net/if.h>
41#include <net/if_var.h>
42#include <net/if_media.h>
43
44#include <dev/mii/mii.h>
45#include <dev/mii/miivar.h>
46#include <dev/mii/miidevs.h>
47
48int	txphymatch(struct device *, void *, void *);
49void	txphyattach(struct device *, struct device *, void *);
50
51const struct cfattach txphy_ca = {
52	sizeof(struct mii_softc), txphymatch, txphyattach, mii_phy_detach
53};
54
55struct cfdriver txphy_cd = {
56	NULL, "txphy", DV_DULL
57};
58
59int	txphy_service(struct mii_softc *, struct mii_data *, int);
60
61const struct mii_phy_funcs txphy_funcs = {
62	txphy_service, ukphy_status, mii_phy_reset,
63};
64
65static const struct mii_phydesc txphys[] = {
66	{ MII_OUI_xxTI,	MII_MODEL_xxTI_TNETE2101,
67	  MII_STR_xxTI_TNETE2101 },
68
69	{ 0,			0,
70	  NULL },
71};
72
73int
74txphymatch(struct device *parent, void *match, void *aux)
75{
76	struct mii_attach_args *ma = aux;
77
78	if (mii_phy_match(ma, txphys) != NULL)
79		return (10);
80
81	return (0);
82}
83
84void
85txphyattach(struct device *parent, struct device *self, void *aux)
86{
87	struct mii_softc *sc = (struct mii_softc *)self;
88	struct mii_attach_args *ma = aux;
89	struct mii_data *mii = ma->mii_data;
90	const struct mii_phydesc *mpd;
91
92	mpd = mii_phy_match(ma, txphys);
93	printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
94
95	sc->mii_inst = mii->mii_instance;
96	sc->mii_phy = ma->mii_phyno;
97	sc->mii_funcs = &txphy_funcs;
98	sc->mii_pdata = mii;
99	sc->mii_flags = ma->mii_flags;
100
101	PHY_RESET(sc);
102
103	sc->mii_capabilities =
104	    PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
105	if (sc->mii_capabilities & BMSR_MEDIAMASK)
106		mii_phy_add_media(sc);
107}
108
109int
110txphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
111{
112	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
113
114	if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
115		return (ENXIO);
116
117	/*
118	 * Can't isolate the TNETE2101 phy, so it has to be the only one.
119	 */
120	if (IFM_INST(ife->ifm_media) != sc->mii_inst)
121		panic("txphy_service: attempt to isolate phy");
122
123	switch (cmd) {
124	case MII_POLLSTAT:
125		break;
126
127	case MII_MEDIACHG:
128		/*
129		 * If the interface is not up, don't do anything.
130		 */
131		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
132			break;
133
134		mii_phy_setmedia(sc);
135		break;
136
137	case MII_TICK:
138		if (mii_phy_tick(sc) == EJUSTRETURN)
139			return (0);
140		break;
141
142	case MII_DOWN:
143		mii_phy_down(sc);
144		return (0);
145	}
146
147	/* Update the media status. */
148	mii_phy_status(sc);
149
150	/* Callback if something changed. */
151	mii_phy_update(sc, cmd);
152	return (0);
153}
154