Line data Source code
1 : /* $OpenBSD: tqphy.c,v 1.18 2015/03/14 03:38:48 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 : int tqphydetach(struct device *, int);
82 :
83 : struct cfattach tqphy_ca = {
84 : sizeof(struct mii_softc), tqphymatch, tqphyattach, mii_phy_detach
85 : };
86 :
87 : struct cfdriver tqphy_cd = {
88 : NULL, "tqphy", DV_DULL
89 : };
90 :
91 : int tqphy_service(struct mii_softc *, struct mii_data *, int);
92 : void tqphy_status(struct mii_softc *);
93 :
94 : const struct mii_phy_funcs tqphy_funcs = {
95 : tqphy_service, tqphy_status, mii_phy_reset,
96 : };
97 :
98 : static const struct mii_phydesc tqphys[] = {
99 : { MII_OUI_TDK, MII_MODEL_TDK_78Q2120,
100 : MII_STR_TDK_78Q2120 },
101 :
102 : { 0, 0,
103 : NULL },
104 : };
105 :
106 : int
107 0 : tqphymatch(struct device *parent, void *match, void *aux)
108 : {
109 0 : struct mii_attach_args *ma = aux;
110 :
111 0 : if (mii_phy_match(ma, tqphys) != NULL)
112 0 : return (10);
113 :
114 0 : return (0);
115 0 : }
116 :
117 : void
118 0 : tqphyattach(struct device *parent, struct device *self, void *aux)
119 : {
120 0 : struct mii_softc *sc = (struct mii_softc *)self;
121 0 : struct mii_attach_args *ma = aux;
122 0 : struct mii_data *mii = ma->mii_data;
123 : const struct mii_phydesc *mpd;
124 :
125 0 : mpd = mii_phy_match(ma, tqphys);
126 0 : printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
127 :
128 0 : sc->mii_inst = mii->mii_instance;
129 0 : sc->mii_phy = ma->mii_phyno;
130 0 : sc->mii_funcs = &tqphy_funcs;
131 0 : sc->mii_pdata = mii;
132 0 : sc->mii_flags = ma->mii_flags;
133 :
134 0 : sc->mii_flags |= MIIF_NOLOOP;
135 :
136 0 : PHY_RESET(sc);
137 :
138 0 : sc->mii_capabilities =
139 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
140 0 : if (sc->mii_capabilities & BMSR_MEDIAMASK)
141 0 : mii_phy_add_media(sc);
142 0 : }
143 :
144 : int
145 0 : tqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
146 : {
147 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
148 : int reg;
149 :
150 0 : if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
151 0 : return (ENXIO);
152 :
153 0 : switch (cmd) {
154 : case MII_POLLSTAT:
155 : /*
156 : * If we're not polling our PHY instance, just return.
157 : */
158 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
159 0 : return (0);
160 : break;
161 :
162 : case MII_MEDIACHG:
163 : /*
164 : * If the media indicates a different PHY instance,
165 : * isolate ourselves.
166 : */
167 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
168 0 : reg = PHY_READ(sc, MII_BMCR);
169 0 : PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
170 0 : return (0);
171 : }
172 :
173 : /*
174 : * If the interface is not up, don't do anything.
175 : */
176 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
177 : break;
178 :
179 0 : mii_phy_setmedia(sc);
180 0 : break;
181 :
182 : case MII_TICK:
183 : /*
184 : * If we're not currently selected, just return.
185 : */
186 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
187 0 : return (0);
188 :
189 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
190 0 : return (0);
191 : break;
192 :
193 : case MII_DOWN:
194 0 : mii_phy_down(sc);
195 0 : return (0);
196 : }
197 :
198 : /* Update the media status. */
199 0 : mii_phy_status(sc);
200 :
201 : /* Callback if something changed. */
202 0 : mii_phy_update(sc, cmd);
203 0 : return (0);
204 0 : }
205 :
206 : void
207 0 : tqphy_status(struct mii_softc *sc)
208 : {
209 0 : struct mii_data *mii = sc->mii_pdata;
210 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
211 : int bmsr, bmcr, diag;
212 :
213 0 : mii->mii_media_status = IFM_AVALID;
214 0 : mii->mii_media_active = IFM_ETHER;
215 :
216 0 : bmsr = PHY_READ(sc, MII_BMSR) |
217 0 : PHY_READ(sc, MII_BMSR);
218 0 : if (bmsr & BMSR_LINK)
219 0 : mii->mii_media_status |= IFM_ACTIVE;
220 :
221 0 : bmcr = PHY_READ(sc, MII_BMCR);
222 0 : if (bmcr & BMCR_ISO) {
223 0 : mii->mii_media_active |= IFM_NONE;
224 0 : mii->mii_media_status = 0;
225 0 : return;
226 : }
227 :
228 0 : if (bmcr & BMCR_LOOP)
229 0 : mii->mii_media_active |= IFM_LOOP;
230 :
231 0 : if (bmcr & BMCR_AUTOEN) {
232 0 : if ((bmsr & BMSR_ACOMP) == 0) {
233 : /* Erg, still trying, I guess... */
234 0 : mii->mii_media_active |= IFM_NONE;
235 0 : return;
236 : }
237 0 : diag = PHY_READ(sc, MII_TQPHY_DIAG);
238 0 : if (diag & DIAG_RATE)
239 0 : mii->mii_media_active |= IFM_100_TX;
240 : else
241 0 : mii->mii_media_active |= IFM_10_T;
242 :
243 0 : if (diag & DIAG_DPLX)
244 0 : mii->mii_media_active |= IFM_FDX;
245 : else
246 0 : mii->mii_media_active |= IFM_HDX;
247 : } else
248 0 : mii->mii_media_active = ife->ifm_media;
249 0 : }
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