Line data Source code
1 : /* $OpenBSD: icsphy.c,v 1.23 2015/03/14 03:38:48 jsg Exp $ */
2 : /* $NetBSD: icsphy.c,v 1.17 2000/02/02 23:34:56 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 : * driver for Integrated Circuit Systems' ICS1890 ethernet 10/100 PHY
60 : * and its successor ICS1892
61 : * datasheet from www.icst.com
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/icsphyreg.h>
78 :
79 : int icsphymatch(struct device *, void *, void *);
80 : void icsphyattach(struct device *, struct device *, void *);
81 :
82 : struct cfattach icsphy_ca = {
83 : sizeof(struct mii_softc), icsphymatch, icsphyattach, mii_phy_detach
84 : };
85 :
86 : struct cfdriver icsphy_cd = {
87 : NULL, "icsphy", DV_DULL
88 : };
89 :
90 : int icsphy_service(struct mii_softc *, struct mii_data *, int);
91 : void icsphy_reset(struct mii_softc *);
92 : void icsphy_status(struct mii_softc *);
93 :
94 : const struct mii_phy_funcs icsphy_funcs = {
95 : icsphy_service, icsphy_status, icsphy_reset,
96 : };
97 :
98 : static const struct mii_phydesc icsphys[] = {
99 : { MII_OUI_xxICS, MII_MODEL_xxICS_1890,
100 : MII_STR_xxICS_1890 },
101 : { MII_OUI_xxICS, MII_MODEL_xxICS_1892,
102 : MII_STR_xxICS_1892 },
103 : { MII_OUI_xxICS, MII_MODEL_xxICS_1893,
104 : MII_STR_xxICS_1893 },
105 :
106 : { 0, 0,
107 : NULL },
108 :
109 : };
110 :
111 : int
112 0 : icsphymatch(struct device *parent, void *match, void *aux)
113 : {
114 0 : struct mii_attach_args *ma = aux;
115 :
116 0 : if (mii_phy_match(ma, icsphys) != NULL)
117 0 : return (10);
118 :
119 0 : return (0);
120 0 : }
121 :
122 : void
123 0 : icsphyattach(struct device *parent, struct device *self, void *aux)
124 : {
125 0 : struct mii_softc *sc = (struct mii_softc *)self;
126 0 : struct mii_attach_args *ma = aux;
127 0 : struct mii_data *mii = ma->mii_data;
128 : const struct mii_phydesc *mpd;
129 :
130 0 : mpd = mii_phy_match(ma, icsphys);
131 0 : printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
132 :
133 0 : sc->mii_inst = mii->mii_instance;
134 0 : sc->mii_phy = ma->mii_phyno;
135 0 : sc->mii_funcs = &icsphy_funcs;
136 0 : sc->mii_pdata = mii;
137 0 : sc->mii_flags = ma->mii_flags;
138 :
139 0 : PHY_RESET(sc);
140 :
141 0 : sc->mii_capabilities =
142 0 : PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
143 0 : if (sc->mii_capabilities & BMSR_MEDIAMASK)
144 0 : mii_phy_add_media(sc);
145 0 : }
146 :
147 : int
148 0 : icsphy_service(sc, mii, cmd)
149 : struct mii_softc *sc;
150 : struct mii_data *mii;
151 : int cmd;
152 : {
153 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
154 : int reg;
155 :
156 0 : if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
157 0 : return (ENXIO);
158 :
159 0 : switch (cmd) {
160 : case MII_POLLSTAT:
161 : /*
162 : * If we're not polling our PHY instance, just return.
163 : */
164 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
165 0 : return (0);
166 : break;
167 :
168 : case MII_MEDIACHG:
169 : /*
170 : * If the media indicates a different PHY instance,
171 : * isolate ourselves.
172 : */
173 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
174 0 : reg = PHY_READ(sc, MII_BMCR);
175 0 : PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
176 0 : return (0);
177 : }
178 :
179 : /*
180 : * If the interface is not up, don't do anything.
181 : */
182 0 : if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
183 : break;
184 :
185 0 : mii_phy_setmedia(sc);
186 0 : break;
187 :
188 : case MII_TICK:
189 : /*
190 : * If we're not currently selected, just return.
191 : */
192 0 : if (IFM_INST(ife->ifm_media) != sc->mii_inst)
193 0 : return (0);
194 :
195 0 : if (mii_phy_tick(sc) == EJUSTRETURN)
196 0 : return (0);
197 : break;
198 :
199 : case MII_DOWN:
200 0 : mii_phy_down(sc);
201 0 : return (0);
202 : }
203 :
204 : /* Update the media status. */
205 0 : mii_phy_status(sc);
206 :
207 : /* Callback if something changed. */
208 0 : mii_phy_update(sc, cmd);
209 0 : return (0);
210 0 : }
211 :
212 : void
213 0 : icsphy_status(sc)
214 : struct mii_softc *sc;
215 : {
216 0 : struct mii_data *mii = sc->mii_pdata;
217 0 : struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
218 : int bmcr, qpr;
219 :
220 0 : mii->mii_media_status = IFM_AVALID;
221 0 : mii->mii_media_active = IFM_ETHER;
222 :
223 : /*
224 : * Don't get link from the BMSR. It's available in the QPR,
225 : * and we have to read it twice to unlatch it anyhow. This
226 : * gives us fewer register reads.
227 : */
228 0 : qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */
229 0 : qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */
230 :
231 0 : if (qpr & QPR_LINK)
232 0 : mii->mii_media_status |= IFM_ACTIVE;
233 :
234 0 : bmcr = PHY_READ(sc, MII_BMCR);
235 0 : if (bmcr & BMCR_ISO) {
236 0 : mii->mii_media_active |= IFM_NONE;
237 0 : mii->mii_media_status = 0;
238 0 : return;
239 : }
240 :
241 0 : if (bmcr & BMCR_LOOP)
242 0 : mii->mii_media_active |= IFM_LOOP;
243 :
244 0 : if (bmcr & BMCR_AUTOEN) {
245 0 : if ((qpr & QPR_ACOMP) == 0) {
246 : /* Erg, still trying, I guess... */
247 0 : mii->mii_media_active |= IFM_NONE;
248 0 : return;
249 : }
250 :
251 0 : if (qpr & QPR_SPEED)
252 0 : mii->mii_media_active |= IFM_100_TX;
253 : else
254 0 : mii->mii_media_active |= IFM_10_T;
255 :
256 0 : if (qpr & QPR_FDX)
257 0 : mii->mii_media_active |= IFM_FDX;
258 : else
259 0 : mii->mii_media_active |= IFM_HDX;
260 : } else
261 0 : mii->mii_media_active = ife->ifm_media;
262 0 : }
263 :
264 : void
265 0 : icsphy_reset(sc)
266 : struct mii_softc *sc;
267 : {
268 :
269 0 : mii_phy_reset(sc);
270 0 : PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_10TPROT|ECR2_Q10T);
271 :
272 : /*
273 : * XXX the ICS1892 doesn't set the BMCR properly after
274 : * XXX reset, which breaks autonegotiation.
275 : */
276 0 : PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX);
277 :
278 0 : }
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