1 /* $OpenBSD: tqphy.c,v 1.20 2024/05/13 01:15:51 jsg Exp $ */
2 /* $NetBSD: tqphy.c,v 1.9 2000/02/02 23:34:57 thorpej Exp $ */
3
4 /*
5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /*
35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 */
57
58 /*
59 * TDK TSC78Q2120 PHY driver
60 *
61 * Documentation available at http://www.tsc.tdk.com/lan/78Q2120.pdf .
62 */
63
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/device.h>
67 #include <sys/socket.h>
68
69 #include <net/if.h>
70 #include <net/if_var.h>
71 #include <net/if_media.h>
72
73 #include <dev/mii/mii.h>
74 #include <dev/mii/miivar.h>
75 #include <dev/mii/miidevs.h>
76
77 #include <dev/mii/tqphyreg.h>
78
79 int tqphymatch(struct device *, void *, void *);
80 void tqphyattach(struct device *, struct device *, void *);
81
82 const struct cfattach tqphy_ca = {
83 sizeof(struct mii_softc), tqphymatch, tqphyattach, mii_phy_detach
84 };
85
86 struct cfdriver tqphy_cd = {
87 NULL, "tqphy", DV_DULL
88 };
89
90 int tqphy_service(struct mii_softc *, struct mii_data *, int);
91 void tqphy_status(struct mii_softc *);
92
93 const struct mii_phy_funcs tqphy_funcs = {
94 tqphy_service, tqphy_status, mii_phy_reset,
95 };
96
97 static const struct mii_phydesc tqphys[] = {
98 { MII_OUI_TDK, MII_MODEL_TDK_78Q2120,
99 MII_STR_TDK_78Q2120 },
100
101 { 0, 0,
102 NULL },
103 };
104
105 int
tqphymatch(struct device * parent,void * match,void * aux)106 tqphymatch(struct device *parent, void *match, void *aux)
107 {
108 struct mii_attach_args *ma = aux;
109
110 if (mii_phy_match(ma, tqphys) != NULL)
111 return (10);
112
113 return (0);
114 }
115
116 void
tqphyattach(struct device * parent,struct device * self,void * aux)117 tqphyattach(struct device *parent, struct device *self, void *aux)
118 {
119 struct mii_softc *sc = (struct mii_softc *)self;
120 struct mii_attach_args *ma = aux;
121 struct mii_data *mii = ma->mii_data;
122 const struct mii_phydesc *mpd;
123
124 mpd = mii_phy_match(ma, tqphys);
125 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
126
127 sc->mii_inst = mii->mii_instance;
128 sc->mii_phy = ma->mii_phyno;
129 sc->mii_funcs = &tqphy_funcs;
130 sc->mii_pdata = mii;
131 sc->mii_flags = ma->mii_flags;
132
133 sc->mii_flags |= MIIF_NOLOOP;
134
135 PHY_RESET(sc);
136
137 sc->mii_capabilities =
138 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
139 if (sc->mii_capabilities & BMSR_MEDIAMASK)
140 mii_phy_add_media(sc);
141 }
142
143 int
tqphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)144 tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
145 {
146 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
147 int reg;
148
149 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
150 return (ENXIO);
151
152 switch (cmd) {
153 case MII_POLLSTAT:
154 /*
155 * If we're not polling our PHY instance, just return.
156 */
157 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
158 return (0);
159 break;
160
161 case MII_MEDIACHG:
162 /*
163 * If the media indicates a different PHY instance,
164 * isolate ourselves.
165 */
166 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
167 reg = PHY_READ(sc, MII_BMCR);
168 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
169 return (0);
170 }
171
172 /*
173 * If the interface is not up, don't do anything.
174 */
175 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
176 break;
177
178 mii_phy_setmedia(sc);
179 break;
180
181 case MII_TICK:
182 /*
183 * If we're not currently selected, just return.
184 */
185 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
186 return (0);
187
188 if (mii_phy_tick(sc) == EJUSTRETURN)
189 return (0);
190 break;
191
192 case MII_DOWN:
193 mii_phy_down(sc);
194 return (0);
195 }
196
197 /* Update the media status. */
198 mii_phy_status(sc);
199
200 /* Callback if something changed. */
201 mii_phy_update(sc, cmd);
202 return (0);
203 }
204
205 void
tqphy_status(struct mii_softc * sc)206 tqphy_status(struct mii_softc *sc)
207 {
208 struct mii_data *mii = sc->mii_pdata;
209 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
210 int bmsr, bmcr, diag;
211
212 mii->mii_media_status = IFM_AVALID;
213 mii->mii_media_active = IFM_ETHER;
214
215 bmsr = PHY_READ(sc, MII_BMSR) |
216 PHY_READ(sc, MII_BMSR);
217 if (bmsr & BMSR_LINK)
218 mii->mii_media_status |= IFM_ACTIVE;
219
220 bmcr = PHY_READ(sc, MII_BMCR);
221 if (bmcr & BMCR_ISO) {
222 mii->mii_media_active |= IFM_NONE;
223 mii->mii_media_status = 0;
224 return;
225 }
226
227 if (bmcr & BMCR_LOOP)
228 mii->mii_media_active |= IFM_LOOP;
229
230 if (bmcr & BMCR_AUTOEN) {
231 if ((bmsr & BMSR_ACOMP) == 0) {
232 /* Erg, still trying, I guess... */
233 mii->mii_media_active |= IFM_NONE;
234 return;
235 }
236 diag = PHY_READ(sc, MII_TQPHY_DIAG);
237 if (diag & DIAG_RATE)
238 mii->mii_media_active |= IFM_100_TX;
239 else
240 mii->mii_media_active |= IFM_10_T;
241
242 if (diag & DIAG_DPLX)
243 mii->mii_media_active |= IFM_FDX;
244 else
245 mii->mii_media_active |= IFM_HDX;
246 } else
247 mii->mii_media_active = ife->ifm_media;
248 }
249