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
48 int txphymatch(struct device *, void *, void *);
49 void txphyattach(struct device *, struct device *, void *);
50
51 const struct cfattach txphy_ca = {
52 sizeof(struct mii_softc), txphymatch, txphyattach, mii_phy_detach
53 };
54
55 struct cfdriver txphy_cd = {
56 NULL, "txphy", DV_DULL
57 };
58
59 int txphy_service(struct mii_softc *, struct mii_data *, int);
60
61 const struct mii_phy_funcs txphy_funcs = {
62 txphy_service, ukphy_status, mii_phy_reset,
63 };
64
65 static 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
73 int
txphymatch(struct device * parent,void * match,void * aux)74 txphymatch(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
84 void
txphyattach(struct device * parent,struct device * self,void * aux)85 txphyattach(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
109 int
txphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)110 txphy_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