1 /* $OpenBSD: lxtphy.c,v 1.15 2006/12/27 19:11:09 kettenis Exp $ */
2 /* $NetBSD: lxtphy.c,v 1.19 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 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the NetBSD
23 * Foundation, Inc. and its contributors.
24 * 4. Neither the name of The NetBSD Foundation nor the names of its
25 * contributors may be used to endorse or promote products derived
26 * from this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGE.
39 */
40
41 /*
42 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
43 *
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
46 * are met:
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 * notice, this list of conditions and the following disclaimer in the
51 * documentation and/or other materials provided with the distribution.
52 * 3. All advertising materials mentioning features or use of this software
53 * must display the following acknowledgement:
54 * This product includes software developed by Manuel Bouyer.
55 * 4. The name of the author may not be used to endorse or promote products
56 * derived from this software without specific prior written permission.
57 *
58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
67 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
68 */
69
70 /*
71 * driver for Level One's LXT-970/971 ethernet 10/100 PHY
72 * datasheet from www.level1.com
73 */
74
75 #include <sys/param.h>
76 #include <sys/systm.h>
77 #include <sys/kernel.h>
78 #include <sys/device.h>
79 #include <sys/socket.h>
80 #include <sys/errno.h>
81
82 #include <net/if.h>
83 #include <net/if_media.h>
84
85 #include <dev/mii/mii.h>
86 #include <dev/mii/miivar.h>
87 #include <dev/mii/miidevs.h>
88
89 #include <dev/mii/lxtphyreg.h>
90
91 int lxtphymatch(struct device *, void *, void *);
92 void lxtphyattach(struct device *, struct device *, void *);
93
94 struct cfattach lxtphy_ca = {
95 sizeof(struct mii_softc), lxtphymatch, lxtphyattach, mii_phy_detach,
96 mii_phy_activate
97 };
98
99 struct cfdriver lxtphy_cd = {
100 NULL, "lxtphy", DV_DULL
101 };
102
103 int lxtphy_service(struct mii_softc *, struct mii_data *, int);
104 void lxtphy_status(struct mii_softc *);
105 void lxtphy_reset(struct mii_softc *);
106
107 const struct mii_phy_funcs lxtphy_funcs = {
108 lxtphy_service, lxtphy_status, lxtphy_reset,
109 };
110
111 const struct mii_phy_funcs lxtphy971_funcs = {
112 lxtphy_service, ukphy_status, lxtphy_reset,
113 };
114
115 static const struct mii_phydesc lxtphys[] = {
116 { MII_OUI_xxLEVEL1, MII_MODEL_xxLEVEL1_LXT970,
117 MII_STR_xxLEVEL1_LXT970 },
118 { MII_OUI_xxLEVEL1a, MII_MODEL_xxLEVEL1a_LXT971,
119 MII_STR_xxLEVEL1a_LXT971 },
120
121 { 0, 0,
122 NULL },
123 };
124
125 int
126 lxtphymatch(parent, match, aux)
127 struct device *parent;
128 void *match;
129 void *aux;
130 {
131 struct mii_attach_args *ma = aux;
132
133 if (mii_phy_match(ma, lxtphys) != NULL)
134 return (10);
135
136 return (0);
137 }
138
139 void
140 lxtphyattach(parent, self, aux)
141 struct device *parent, *self;
142 void *aux;
143 {
144 struct mii_softc *sc = (struct mii_softc *)self;
145 struct mii_attach_args *ma = aux;
146 struct mii_data *mii = ma->mii_data;
147 const struct mii_phydesc *mpd;
148
149 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1 &&
150 MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1_LXT970) {
151 sc->mii_funcs = &lxtphy_funcs;
152 }
153 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxLEVEL1a &&
154 MII_MODEL(ma->mii_id2) == MII_MODEL_xxLEVEL1a_LXT971) {
155 sc->mii_funcs = &lxtphy971_funcs;
156 }
157
158 mpd = mii_phy_match(ma, lxtphys);
159 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
160
161 sc->mii_inst = mii->mii_instance;
162 sc->mii_phy = ma->mii_phyno;
163 sc->mii_pdata = mii;
164 sc->mii_flags = ma->mii_flags;
165
166 PHY_RESET(sc);
167
168 sc->mii_capabilities =
169 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
170 if (sc->mii_capabilities & BMSR_MEDIAMASK)
171 mii_phy_add_media(sc);
172 }
173
174 int
175 lxtphy_service(sc, mii, cmd)
176 struct mii_softc *sc;
177 struct mii_data *mii;
178 int cmd;
179 {
180 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
181 int reg;
182
183 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
184 return (ENXIO);
185
186 switch (cmd) {
187 case MII_POLLSTAT:
188 /*
189 * If we're not polling our PHY instance, just return.
190 */
191 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
192 return (0);
193 break;
194
195 case MII_MEDIACHG:
196 /*
197 * If the media indicates a different PHY instance,
198 * isolate ourselves.
199 */
200 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
201 reg = PHY_READ(sc, MII_BMCR);
202 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
203 return (0);
204 }
205
206 /*
207 * If the interface is not up, don't do anything.
208 */
209 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
210 break;
211
212 mii_phy_setmedia(sc);
213 break;
214
215 case MII_TICK:
216 /*
217 * If we're not currently selected, just return.
218 */
219 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
220 return (0);
221
222 if (mii_phy_tick(sc) == EJUSTRETURN)
223 return (0);
224 break;
225
226 case MII_DOWN:
227 mii_phy_down(sc);
228 return (0);
229 }
230
231 /* Update the media status. */
232 mii_phy_status(sc);
233
234 /* Callback if something changed. */
235 mii_phy_update(sc, cmd);
236 return (0);
237 }
238
239 void
240 lxtphy_status(sc)
241 struct mii_softc *sc;
242 {
243 struct mii_data *mii = sc->mii_pdata;
244 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
245 int bmcr, bmsr, csr;
246
247 mii->mii_media_status = IFM_AVALID;
248 mii->mii_media_active = IFM_ETHER;
249
250 /*
251 * Get link status from the CSR; we need to read the CSR
252 * for media type anyhow, and the link status in the CSR
253 * doens't latch, so fewer register reads are required.
254 */
255 csr = PHY_READ(sc, MII_LXTPHY_CSR);
256 if (csr & CSR_LINK)
257 mii->mii_media_status |= IFM_ACTIVE;
258
259 bmcr = PHY_READ(sc, MII_BMCR);
260 if (bmcr & BMCR_ISO) {
261 mii->mii_media_active |= IFM_NONE;
262 mii->mii_media_status = 0;
263 return;
264 }
265
266 if (bmcr & BMCR_LOOP)
267 mii->mii_media_active |= IFM_LOOP;
268
269 if (bmcr & BMCR_AUTOEN) {
270 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
271 if ((bmsr & BMSR_ACOMP) == 0) {
272 /* Erg, still trying, I guess... */
273 mii->mii_media_active |= IFM_NONE;
274 return;
275 }
276 if (csr & CSR_SPEED)
277 mii->mii_media_active |= IFM_100_TX;
278 else
279 mii->mii_media_active |= IFM_10_T;
280
281 if (csr & CSR_DUPLEX)
282 mii->mii_media_active |= IFM_FDX;
283 else
284 mii->mii_media_active |= IFM_HDX;
285 } else
286 mii->mii_media_active = ife->ifm_media;
287 }
288
289 void
290 lxtphy_reset(sc)
291 struct mii_softc *sc;
292 {
293 mii_phy_reset(sc);
294 PHY_WRITE(sc, MII_LXTPHY_IER,
295 PHY_READ(sc, MII_LXTPHY_IER) & ~IER_INTEN);
296 }