1 /* $OpenBSD: sqphy.c,v 1.14 2005/02/05 04:28:23 brad Exp $ */
2 /* $NetBSD: sqphy.c,v 1.17 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 Seeq 80220/80221 and 80223 10/100 ethernet PHYs
72 * datasheet from www.seeq.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/sqphyreg.h>
90
91 int sqphymatch(struct device *, void *, void *);
92 void sqphyattach(struct device *, struct device *, void *);
93
94 struct cfattach sqphy_ca = {
95 sizeof(struct mii_softc), sqphymatch, sqphyattach, mii_phy_detach,
96 mii_phy_activate
97 };
98
99 struct cfdriver sqphy_cd = {
100 NULL, "sqphy", DV_DULL
101 };
102
103 int sqphy_service(struct mii_softc *, struct mii_data *, int);
104 void sqphy_status(struct mii_softc *);
105
106 const struct mii_phy_funcs sqphy_funcs = {
107 sqphy_service, sqphy_status, mii_phy_reset,
108 };
109
110 static const struct mii_phydesc sqphys[] = {
111 { MII_OUI_xxSEEQ, MII_MODEL_xxSEEQ_80220,
112 MII_STR_xxSEEQ_80220 },
113 { MII_OUI_xxSEEQ, MII_MODEL_xxSEEQ_80225,
114 MII_STR_xxSEEQ_80225 },
115 { MII_OUI_xxSEEQ, MII_MODEL_xxSEEQ_84220,
116 MII_STR_xxSEEQ_84220 },
117
118 { 0, 0,
119 NULL },
120 };
121
122 int
sqphymatch(struct device * parent,void * match,void * aux)123 sqphymatch(struct device *parent, void *match, void *aux)
124 {
125 struct mii_attach_args *ma = aux;
126
127 if (mii_phy_match(ma, sqphys) != NULL)
128 return (10);
129
130 return (0);
131 }
132
133 void
sqphyattach(struct device * parent,struct device * self,void * aux)134 sqphyattach(struct device *parent, struct device *self, void *aux)
135 {
136 struct mii_softc *sc = (struct mii_softc *)self;
137 struct mii_attach_args *ma = aux;
138 struct mii_data *mii = ma->mii_data;
139 const struct mii_phydesc *mpd;
140
141 mpd = mii_phy_match(ma, sqphys);
142 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
143
144 sc->mii_inst = mii->mii_instance;
145 sc->mii_phy = ma->mii_phyno;
146 sc->mii_funcs = &sqphy_funcs;
147 sc->mii_pdata = mii;
148 sc->mii_flags = ma->mii_flags;
149
150 PHY_RESET(sc);
151
152 sc->mii_capabilities =
153 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
154 if (sc->mii_capabilities & BMSR_MEDIAMASK)
155 mii_phy_add_media(sc);
156 }
157
158 int
sqphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)159 sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
160 {
161 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
162 int reg;
163
164 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
165 return (ENXIO);
166
167 switch (cmd) {
168 case MII_POLLSTAT:
169 /*
170 * If we're not polling our PHY instance, just return.
171 */
172 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
173 return (0);
174 break;
175
176 case MII_MEDIACHG:
177 /*
178 * If the media indicates a different PHY instance,
179 * isolate ourselves.
180 */
181 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
182 reg = PHY_READ(sc, MII_BMCR);
183 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
184 return (0);
185 }
186
187 /*
188 * If the interface is not up, don't do anything.
189 */
190 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
191 break;
192
193 mii_phy_setmedia(sc);
194 break;
195
196 case MII_TICK:
197 /*
198 * If we're not currently selected, just return.
199 */
200 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
201 return (0);
202
203 if (mii_phy_tick(sc) == EJUSTRETURN)
204 return (0);
205 break;
206
207 case MII_DOWN:
208 mii_phy_down(sc);
209 return (0);
210 }
211
212 /* Update the media status. */
213 mii_phy_status(sc);
214
215 /* Callback if something changed. */
216 mii_phy_update(sc, cmd);
217 return (0);
218 }
219
220 void
sqphy_status(struct mii_softc * sc)221 sqphy_status(struct mii_softc *sc)
222 {
223 struct mii_data *mii = sc->mii_pdata;
224 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
225 int bmsr, bmcr, status;
226
227 mii->mii_media_status = IFM_AVALID;
228 mii->mii_media_active = IFM_ETHER;
229
230 bmsr = PHY_READ(sc, MII_BMSR) |
231 PHY_READ(sc, MII_BMSR);
232 if (bmsr & BMSR_LINK)
233 mii->mii_media_status |= IFM_ACTIVE;
234
235 bmcr = PHY_READ(sc, MII_BMCR);
236 if (bmcr & BMCR_ISO) {
237 mii->mii_media_active |= IFM_NONE;
238 mii->mii_media_status = 0;
239 return;
240 }
241
242 if (bmcr & BMCR_LOOP)
243 mii->mii_media_active |= IFM_LOOP;
244
245 if (bmcr & BMCR_AUTOEN) {
246 if ((bmsr & BMSR_ACOMP) == 0) {
247 /* Erg, still trying, I guess... */
248 mii->mii_media_active |= IFM_NONE;
249 return;
250 }
251 /*
252 * Note: don't get fancy here -- the 80225 only
253 * supports the SPD_DET and DPLX_DET bits in
254 * the STATUS register.
255 */
256 status = PHY_READ(sc, MII_SQPHY_STATUS);
257 if (status & STATUS_SPD_DET)
258 mii->mii_media_active |= IFM_100_TX;
259 else
260 mii->mii_media_active |= IFM_10_T;
261 if (status & STATUS_DPLX_DET)
262 mii->mii_media_active |= IFM_FDX;
263 } else
264 mii->mii_media_active = ife->ifm_media;
265 }
266