1 /* $OpenBSD: nsphyter.c,v 1.11 2005/02/19 06:00:04 brad 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
116 { 0, 0,
117 NULL },
118 };
119
120 int
nsphytermatch(struct device * parent,void * match,void * aux)121 nsphytermatch(struct device *parent, void *match, void *aux)
122 {
123 struct mii_attach_args *ma = aux;
124
125 if (mii_phy_match(ma, nsphyterphys) != NULL)
126 return (10);
127
128 return (0);
129 }
130
131 void
nsphyterattach(struct device * parent,struct device * self,void * aux)132 nsphyterattach(struct device *parent, struct device *self, void *aux)
133 {
134 struct mii_softc *sc = (struct mii_softc *)self;
135 struct mii_attach_args *ma = aux;
136 struct mii_data *mii = ma->mii_data;
137 const struct mii_phydesc *mpd;
138
139 mpd = mii_phy_match(ma, nsphyterphys);
140 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
141
142 sc->mii_inst = mii->mii_instance;
143 sc->mii_phy = ma->mii_phyno;
144 sc->mii_funcs = &nsphyter_funcs;
145 sc->mii_pdata = mii;
146 sc->mii_flags = ma->mii_flags;
147
148 PHY_RESET(sc);
149
150 sc->mii_capabilities =
151 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
152 if (sc->mii_capabilities & BMSR_MEDIAMASK)
153 mii_phy_add_media(sc);
154 }
155
156 int
nsphyter_service(struct mii_softc * sc,struct mii_data * mii,int cmd)157 nsphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
158 {
159 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
160 int reg;
161
162 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
163 return (ENXIO);
164
165 switch (cmd) {
166 case MII_POLLSTAT:
167 /*
168 * If we're not polling our PHY instance, just return.
169 */
170 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
171 return (0);
172 break;
173
174 case MII_MEDIACHG:
175 /*
176 * If the media indicates a different PHY instance,
177 * isolate ourselves.
178 */
179 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
180 reg = PHY_READ(sc, MII_BMCR);
181 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
182 return (0);
183 }
184
185 /*
186 * If the interface is not up, don't do anything.
187 */
188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
189 break;
190
191 mii_phy_setmedia(sc);
192 break;
193
194 case MII_TICK:
195 /*
196 * If we're not currently selected, just return.
197 */
198 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
199 return (0);
200
201 if (mii_phy_tick(sc) == EJUSTRETURN)
202 return (0);
203 break;
204
205 case MII_DOWN:
206 mii_phy_down(sc);
207 return (0);
208 }
209
210 /* Update the media status. */
211 mii_phy_status(sc);
212
213 /* Callback if something changed. */
214 mii_phy_update(sc, cmd);
215 return (0);
216 }
217
218 void
nsphyter_status(struct mii_softc * sc)219 nsphyter_status(struct mii_softc *sc)
220 {
221 struct mii_data *mii = sc->mii_pdata;
222 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
223 int bmsr, bmcr, physts;
224
225 mii->mii_media_status = IFM_AVALID;
226 mii->mii_media_active = IFM_ETHER;
227
228 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
229 physts = PHY_READ(sc, MII_NSPHYTER_PHYSTS);
230
231 if (physts & PHYSTS_LINK)
232 mii->mii_media_status |= IFM_ACTIVE;
233
234 bmcr = PHY_READ(sc, MII_BMCR);
235 if (bmcr & BMCR_ISO) {
236 mii->mii_media_active |= IFM_NONE;
237 mii->mii_media_status = 0;
238 return;
239 }
240
241 if (bmcr & BMCR_LOOP)
242 mii->mii_media_active |= IFM_LOOP;
243
244 if (bmcr & BMCR_AUTOEN) {
245 /*
246 * The media status bits are only valid of autonegotiation
247 * has completed (or it's disabled).
248 */
249 if ((bmsr & BMSR_ACOMP) == 0) {
250 /* Erg, still trying, I guess... */
251 mii->mii_media_active |= IFM_NONE;
252 return;
253 }
254
255 if (physts & PHYSTS_SPEED10)
256 mii->mii_media_active |= IFM_10_T;
257 else
258 mii->mii_media_active |= IFM_100_TX;
259 if (physts & PHYSTS_DUPLEX)
260 mii->mii_media_active |= IFM_FDX;
261 } else
262 mii->mii_media_active = ife->ifm_media;
263 }
264