1 /* $OpenBSD: nsphyter.c,v 1.13 2006/12/27 19:11:09 kettenis Exp $ */
2 /* $NetBSD: nsphyter.c,v 1.5 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 National Semiconductor's DP83843 `PHYTER' ethernet 10/100 PHY
72 * Data Sheet available from www.national.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/nsphyterreg.h>
90
91 int nsphytermatch(struct device *, void *, void *);
92 void nsphyterattach(struct device *, struct device *, void *);
93
94 struct cfattach nsphyter_ca = {
95 sizeof(struct mii_softc), nsphytermatch, nsphyterattach,
96 mii_phy_detach, mii_phy_activate
97 };
98
99 struct cfdriver nsphyter_cd = {
100 NULL, "nsphyter", DV_DULL
101 };
102
103 int nsphyter_service(struct mii_softc *, struct mii_data *, int);
104 void nsphyter_status(struct mii_softc *);
105
106 const struct mii_phy_funcs nsphyter_funcs = {
107 nsphyter_service, nsphyter_status, mii_phy_reset,
108 };
109
110 static const struct mii_phydesc nsphyterphys[] = {
111 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83815,
112 MII_STR_NATSEMI_DP83815 },
113 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83843,
114 MII_STR_NATSEMI_DP83843 },
115 { MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83847,
116 MII_STR_NATSEMI_DP83847 },
117
118 { 0, 0,
119 NULL },
120 };
121
122 int
123 nsphytermatch(struct device *parent, void *match, void *aux)
124 {
125 struct mii_attach_args *ma = aux;
126
127 if (mii_phy_match(ma, nsphyterphys) != NULL)
128 return (10);
129
130 return (0);
131 }
132
133 void
134 nsphyterattach(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, nsphyterphys);
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 = &nsphyter_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
159 nsphyter_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
221 nsphyter_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, physts;
226
227 mii->mii_media_status = IFM_AVALID;
228 mii->mii_media_active = IFM_ETHER;
229
230 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
231 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS);
232
233 if (physts & PHYSTS_LINK)
234 mii->mii_media_status |= IFM_ACTIVE;
235
236 bmcr = PHY_READ(sc, MII_BMCR);
237 if (bmcr & BMCR_ISO) {
238 mii->mii_media_active |= IFM_NONE;
239 mii->mii_media_status = 0;
240 return;
241 }
242
243 if (bmcr & BMCR_LOOP)
244 mii->mii_media_active |= IFM_LOOP;
245
246 if (bmcr & BMCR_AUTOEN) {
247 /*
248 * The media status bits are only valid of autonegotiation
249 * has completed (or it's disabled).
250 */
251 if ((bmsr & BMSR_ACOMP) == 0) {
252 /* Erg, still trying, I guess... */
253 mii->mii_media_active |= IFM_NONE;
254 return;
255 }
256
257 if (physts & PHYSTS_SPEED10)
258 mii->mii_media_active |= IFM_10_T;
259 else
260 mii->mii_media_active |= IFM_100_TX;
261
262 if (physts & PHYSTS_DUPLEX)
263 mii->mii_media_active |= IFM_FDX;
264 else
265 mii->mii_media_active |= IFM_HDX;
266 } else
267 mii->mii_media_active = ife->ifm_media;
268 }