FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/dmphy.c
1 /* $NetBSD: dmphy.c,v 1.18 2003/04/29 01:49:33 thorpej 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 Davicom's DM9101 ethernet 10/100 PHY
71 * Data Sheet available from www.davicom8.com
72 */
73
74 #include <sys/cdefs.h>
75 __KERNEL_RCSID(0, "$NetBSD: dmphy.c,v 1.18 2003/04/29 01:49:33 thorpej 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 #include <sys/errno.h>
83
84 #include <net/if.h>
85 #include <net/if_media.h>
86
87 #include <dev/mii/mii.h>
88 #include <dev/mii/miivar.h>
89 #include <dev/mii/miidevs.h>
90
91 #include <dev/mii/dmphyreg.h>
92
93 int dmphymatch(struct device *, struct cfdata *, void *);
94 void dmphyattach(struct device *, struct device *, void *);
95
96 CFATTACH_DECL(dmphy, sizeof(struct mii_softc),
97 dmphymatch, dmphyattach, mii_phy_detach, mii_phy_activate);
98
99 int dmphy_service(struct mii_softc *, struct mii_data *, int);
100 void dmphy_status(struct mii_softc *);
101
102 const struct mii_phy_funcs dmphy_funcs = {
103 dmphy_service, dmphy_status, mii_phy_reset,
104 };
105
106 const struct mii_phydesc dmphys[] = {
107 { MII_OUI_xxDAVICOM, MII_MODEL_xxDAVICOM_DM9101,
108 MII_STR_xxDAVICOM_DM9101 },
109
110 { MII_OUI_DAVICOM, MII_MODEL_xxDAVICOM_DM9101,
111 MII_STR_xxDAVICOM_DM9101 },
112
113 { 0, 0,
114 NULL },
115 };
116
117 int
118 dmphymatch(struct device *parent, struct cfdata *match, void *aux)
119 {
120 struct mii_attach_args *ma = aux;
121
122 if (mii_phy_match(ma, dmphys) != NULL)
123 return (10);
124
125 return (0);
126 }
127
128 void
129 dmphyattach(struct device *parent, struct device *self, void *aux)
130 {
131 struct mii_softc *sc = (struct mii_softc *)self;
132 struct mii_attach_args *ma = aux;
133 struct mii_data *mii = ma->mii_data;
134 const struct mii_phydesc *mpd;
135
136 mpd = mii_phy_match(ma, dmphys);
137 aprint_naive(": Media interface\n");
138 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
139
140 sc->mii_inst = mii->mii_instance;
141 sc->mii_phy = ma->mii_phyno;
142 sc->mii_funcs = &dmphy_funcs;
143 sc->mii_pdata = mii;
144 sc->mii_flags = ma->mii_flags;
145 sc->mii_anegticks = 5;
146
147 PHY_RESET(sc);
148
149 sc->mii_capabilities =
150 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
151 aprint_normal("%s: ", sc->mii_dev.dv_xname);
152 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
153 aprint_error("no media present");
154 else
155 mii_phy_add_media(sc);
156 aprint_normal("\n");
157 }
158
159 int
160 dmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
161 {
162 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
163 int reg;
164
165 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
166 return (ENXIO);
167
168 switch (cmd) {
169 case MII_POLLSTAT:
170 /*
171 * If we're not polling our PHY instance, just return.
172 */
173 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
174 return (0);
175 break;
176
177 case MII_MEDIACHG:
178 /*
179 * If the media indicates a different PHY instance,
180 * isolate ourselves.
181 */
182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
183 reg = PHY_READ(sc, MII_BMCR);
184 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
185 return (0);
186 }
187
188 /*
189 * If the interface is not up, don't do anything.
190 */
191 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
192 break;
193
194 mii_phy_setmedia(sc);
195 break;
196
197 case MII_TICK:
198 /*
199 * If we're not currently selected, just return.
200 */
201 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
202 return (0);
203
204 if (mii_phy_tick(sc) == EJUSTRETURN)
205 return (0);
206 break;
207
208 case MII_DOWN:
209 mii_phy_down(sc);
210 return (0);
211 }
212
213 /* Update the media status. */
214 mii_phy_status(sc);
215
216 /* Callback if something changed. */
217 mii_phy_update(sc, cmd);
218 return (0);
219 }
220
221 void
222 dmphy_status(struct mii_softc *sc)
223 {
224 struct mii_data *mii = sc->mii_pdata;
225 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
226 int bmsr, bmcr, dscsr;
227
228 mii->mii_media_status = IFM_AVALID;
229 mii->mii_media_active = IFM_ETHER;
230
231 bmsr = PHY_READ(sc, MII_BMSR) |
232 PHY_READ(sc, MII_BMSR);
233 if (bmsr & BMSR_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 PAR 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 dscsr = PHY_READ(sc, MII_DMPHY_DSCSR);
258 if (dscsr & DSCSR_100FDX)
259 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
260 else if (dscsr & DSCSR_100HDX)
261 mii->mii_media_active |= IFM_100_TX;
262 else if (dscsr & DSCSR_10FDX)
263 mii->mii_media_active |= IFM_10_T|IFM_FDX;
264 else if (dscsr & DSCSR_10HDX)
265 mii->mii_media_active |= IFM_10_T;
266 else
267 mii->mii_media_active |= IFM_NONE;
268 } else
269 mii->mii_media_active = ife->ifm_media;
270 }
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