FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/icsphy.c
1 /* $NetBSD: icsphy.c,v 1.33 2003/07/01 22:51:13 msaitoh Exp $ */
2
3 /*-
4 * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 /*
41 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. All advertising materials mentioning features or use of this software
52 * must display the following acknowledgement:
53 * This product includes software developed by Manuel Bouyer.
54 * 4. The name of the author may not be used to endorse or promote products
55 * derived from this software without specific prior written permission.
56 *
57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
67 */
68
69 /*
70 * driver for Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY
71 * datasheet from www.icst.com
72 */
73
74 #include <sys/cdefs.h>
75 __KERNEL_RCSID(0, "$NetBSD: icsphy.c,v 1.33 2003/07/01 22:51:13 msaitoh Exp $");
76
77 #include <sys/param.h>
78 #include <sys/systm.h>
79 #include <sys/kernel.h>
80 #include <sys/device.h>
81 #include <sys/socket.h>
82
83 #include <net/if.h>
84 #include <net/if_media.h>
85
86 #include <dev/mii/mii.h>
87 #include <dev/mii/miivar.h>
88 #include <dev/mii/miidevs.h>
89
90 #include <dev/mii/icsphyreg.h>
91
92 int icsphymatch(struct device *, struct cfdata *, void *);
93 void icsphyattach(struct device *, struct device *, void *);
94
95 CFATTACH_DECL(icsphy, sizeof(struct mii_softc),
96 icsphymatch, icsphyattach, mii_phy_detach, mii_phy_activate);
97
98 int icsphy_service(struct mii_softc *, struct mii_data *, int);
99 void icsphy_status(struct mii_softc *);
100 void icsphy_reset(struct mii_softc *);
101
102 const struct mii_phy_funcs icsphy_funcs = {
103 icsphy_service, icsphy_status, icsphy_reset,
104 };
105
106 const struct mii_phydesc icsphys[] = {
107 { MII_OUI_ICS, MII_MODEL_ICS_1889,
108 MII_STR_ICS_1889 },
109
110 { MII_OUI_ICS, MII_MODEL_ICS_1890,
111 MII_STR_ICS_1890 },
112
113 { MII_OUI_ICS, MII_MODEL_ICS_1892,
114 MII_STR_ICS_1892 },
115
116 { MII_OUI_ICS, MII_MODEL_ICS_1893,
117 MII_STR_ICS_1893 },
118
119 { 0, 0,
120 NULL },
121 };
122
123 int
124 icsphymatch(struct device *parent, struct cfdata *match, void *aux)
125 {
126 struct mii_attach_args *ma = aux;
127
128 if (mii_phy_match(ma, icsphys) != NULL)
129 return (10);
130
131 return (0);
132 }
133
134 void
135 icsphyattach(struct device *parent, struct device *self, void *aux)
136 {
137 struct mii_softc *sc = (struct mii_softc *)self;
138 struct mii_attach_args *ma = aux;
139 struct mii_data *mii = ma->mii_data;
140 const struct mii_phydesc *mpd;
141
142 mpd = mii_phy_match(ma, icsphys);
143 aprint_naive(": Media interface\n");
144 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
145
146 sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
147 sc->mii_inst = mii->mii_instance;
148 sc->mii_phy = ma->mii_phyno;
149 sc->mii_funcs = &icsphy_funcs;
150 sc->mii_pdata = mii;
151 sc->mii_flags = ma->mii_flags;
152 sc->mii_anegticks = 5;
153
154 PHY_RESET(sc);
155
156 sc->mii_capabilities =
157 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
158 aprint_normal("%s: ", sc->mii_dev.dv_xname);
159 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
160 aprint_error("no media present");
161 else
162 mii_phy_add_media(sc);
163 aprint_normal("\n");
164 }
165
166 int
167 icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
168 {
169 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
170 int reg;
171
172 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
173 return (ENXIO);
174
175 switch (cmd) {
176 case MII_POLLSTAT:
177 /*
178 * If we're not polling our PHY instance, just return.
179 */
180 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
181 return (0);
182 break;
183
184 case MII_MEDIACHG:
185 /*
186 * If the media indicates a different PHY instance,
187 * isolate ourselves.
188 */
189 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
190 reg = PHY_READ(sc, MII_BMCR);
191 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
192 return (0);
193 }
194
195 /*
196 * If the interface is not up, don't do anything.
197 */
198 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
199 break;
200
201 mii_phy_setmedia(sc);
202 break;
203
204 case MII_TICK:
205 /*
206 * If we're not currently selected, just return.
207 */
208 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
209 return (0);
210
211 if (mii_phy_tick(sc) == EJUSTRETURN)
212 return (0);
213 break;
214
215 case MII_DOWN:
216 mii_phy_down(sc);
217 return (0);
218 }
219
220 /* Update the media status. */
221 mii_phy_status(sc);
222
223 /* Callback if something changed. */
224 mii_phy_update(sc, cmd);
225 return (0);
226 }
227
228 void
229 icsphy_status(struct mii_softc *sc)
230 {
231 struct mii_data *mii = sc->mii_pdata;
232 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
233 int bmcr, qpr;
234
235 mii->mii_media_status = IFM_AVALID;
236 mii->mii_media_active = IFM_ETHER;
237
238 /*
239 * Don't get link from the BMSR. It's available in the QPR,
240 * and we have to read it twice to unlatch it anyhow. This
241 * gives us fewer register reads.
242 */
243 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */
244 qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */
245
246 if (qpr & QPR_LINK)
247 mii->mii_media_status |= IFM_ACTIVE;
248
249 bmcr = PHY_READ(sc, MII_BMCR);
250 if (bmcr & BMCR_ISO) {
251 mii->mii_media_active |= IFM_NONE;
252 mii->mii_media_status = 0;
253 return;
254 }
255
256 if (bmcr & BMCR_LOOP)
257 mii->mii_media_active |= IFM_LOOP;
258
259 if (bmcr & BMCR_AUTOEN) {
260 if ((qpr & QPR_ACOMP) == 0) {
261 /* Erg, still trying, I guess... */
262 mii->mii_media_active |= IFM_NONE;
263 return;
264 }
265 if (qpr & QPR_SPEED)
266 mii->mii_media_active |= IFM_100_TX;
267 else
268 mii->mii_media_active |= IFM_10_T;
269 if (qpr & QPR_FDX)
270 mii->mii_media_active |= IFM_FDX;
271 } else
272 mii->mii_media_active = ife->ifm_media;
273 }
274
275 void
276 icsphy_reset(sc)
277 struct mii_softc *sc;
278 {
279
280 mii_phy_reset(sc);
281 /* set powerdown feature */
282 switch (sc->mii_mpd_model) {
283 case MII_MODEL_ICS_1890:
284 case MII_MODEL_ICS_1893:
285 PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN);
286 break;
287 case MII_MODEL_ICS_1892:
288 PHY_WRITE(sc, MII_ICSPHY_ECR2,
289 ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN);
290 break;
291 default:
292 /* 1889 have no ECR2 */
293 break;
294 }
295 /*
296 * There is no description that the reset do auto-negotiation in the
297 * data sheet.
298 */
299 PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX);
300 }
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