1 /* $NetBSD: acphy.c,v 1.16 2006/03/29 07:05:24 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1998, 1999 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 * $FreeBSD: src/sys/dev/mii/acphy.c,v 1.2.2.2 2002/10/21 21:20:19 semenu Exp $
40 */
41
42 /*
43 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
44 *
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
47 * are met:
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 * 3. All advertising materials mentioning features or use of this software
54 * must display the following acknowledgement:
55 * This product includes software developed by Manuel Bouyer.
56 * 4. The name of the author may not be used to endorse or promote products
57 * derived from this software without specific prior written permission.
58 *
59 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
60 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
61 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
62 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
63 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
64 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
65 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
66 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
67 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
68 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69 */
70
71 /*
72 * Driver for Altima AC101 10/100 PHY
73 */
74
75 #include <sys/param.h>
76 #include <sys/systm.h>
77 #include <sys/kernel.h>
78 #include <sys/socket.h>
79 #include <sys/errno.h>
80 #include <sys/module.h>
81 #include <sys/bus.h>
82
83 #include <net/if.h>
84 #include <net/if_media.h>
85
86 #include "mii.h"
87 #include "miivar.h"
88 #include "miidevs.h"
89
90 #include "acphyreg.h"
91
92 #include "miibus_if.h"
93
94 static int acphy_probe (device_t);
95 static int acphy_attach (device_t);
96
97 static device_method_t acphy_methods[] = {
98 /* device interface */
99 DEVMETHOD(device_probe, acphy_probe),
100 DEVMETHOD(device_attach, acphy_attach),
101 DEVMETHOD(device_detach, ukphy_detach),
102 DEVMETHOD(device_shutdown, bus_generic_shutdown),
103 DEVMETHOD_END
104 };
105
106 static const struct mii_phydesc acphys[] = {
107 MII_PHYDESC(xxALTIMA, AC101),
108 MII_PHYDESC(xxALTIMA, AC101L),
109 MII_PHYDESC(xxALTIMA, AC_UNKNOWN),
110 MII_PHYDESC(xxALTIMA, Am79C875),
111 MII_PHYDESC_NULL
112 };
113
114 static devclass_t acphy_devclass;
115
116 static driver_t acphy_driver = {
117 "acphy",
118 acphy_methods,
119 sizeof(struct mii_softc)
120 };
121
122 DRIVER_MODULE(acphy, miibus, acphy_driver, acphy_devclass, NULL, NULL);
123
124 static int acphy_service(struct mii_softc *, struct mii_data *, int);
125 static void acphy_reset(struct mii_softc *);
126 static void acphy_status(struct mii_softc *);
127
128 static int
129 acphy_probe(device_t dev)
130 {
131 struct mii_attach_args *ma = device_get_ivars(dev);
132 const struct mii_phydesc *mpd;
133
134 mpd = mii_phy_match(ma, acphys);
135 if (mpd != NULL) {
136 device_set_desc(dev, mpd->mpd_name);
137 return (0);
138 }
139 return (ENXIO);
140 }
141
142 static int
143 acphy_attach(device_t dev)
144 {
145 struct mii_softc *sc;
146 struct mii_attach_args *ma;
147 struct mii_data *mii;
148
149 sc = device_get_softc(dev);
150 ma = device_get_ivars(dev);
151 mii_softc_init(sc, ma);
152 sc->mii_dev = device_get_parent(dev);
153 mii = device_get_softc(sc->mii_dev);
154 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
155
156 sc->mii_inst = mii->mii_instance;
157 sc->mii_service = acphy_service;
158 sc->mii_reset = acphy_reset;
159 sc->mii_pdata = mii;
160 sc->mii_flags |= MIIF_NOISOLATE;
161
162 acphy_reset(sc);
163
164 mii->mii_instance++;
165
166 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
167 device_printf(dev, " ");
168 if (sc->mii_capabilities & BMSR_MEDIAMASK)
169 mii_phy_add_media(sc);
170 else
171 kprintf("no media present");
172 kprintf("\n");
173
174 MIIBUS_MEDIAINIT(sc->mii_dev);
175 return (0);
176 }
177
178 static int
179 acphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
180 {
181 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
182 int reg;
183
184 /*
185 * If we're not selected, then do nothing, just isolate and power
186 * down, if changing media.
187 */
188 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
189 if (cmd == MII_MEDIACHG) {
190 reg = PHY_READ(sc, MII_BMCR);
191 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO | BMCR_PDOWN);
192 }
193
194 return (0);
195 }
196
197 switch (cmd) {
198 case MII_POLLSTAT:
199 break;
200
201 case MII_MEDIACHG:
202 /*
203 * If the interface is not up, don't do anything.
204 */
205 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
206 break;
207
208 mii_phy_set_media(sc);
209 break;
210
211 case MII_TICK:
212 /*
213 * Is the interface even up?
214 */
215 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
216 return (0);
217
218 /*
219 * Only used for autonegotiation.
220 */
221 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
222 break;
223
224 /*
225 * This PHY's autonegotiation doesn't need to be kicked.
226 */
227 break;
228 }
229
230 /* Update the media status. */
231 acphy_status(sc);
232
233 /* Callback if something changed. */
234 mii_phy_update(sc, cmd);
235 return (0);
236 }
237
238 static void
239 acphy_status(struct mii_softc *sc)
240 {
241 struct mii_data *mii = sc->mii_pdata;
242 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
243 int bmsr, bmcr;
244
245 mii->mii_media_status = IFM_AVALID;
246 mii->mii_media_active = IFM_ETHER;
247
248 bmsr = PHY_READ(sc, MII_BMSR) |
249 PHY_READ(sc, MII_BMSR);
250 if (bmsr & BMSR_LINK)
251 mii->mii_media_status |= IFM_ACTIVE;
252
253 bmcr = PHY_READ(sc, MII_BMCR);
254 if (bmcr & BMCR_ISO) {
255 mii->mii_media_active |= IFM_NONE;
256 mii->mii_media_status = 0;
257 return;
258 }
259
260 if (bmcr & BMCR_LOOP)
261 mii->mii_media_active |= IFM_LOOP;
262
263 if (bmcr & BMCR_AUTOEN) {
264 int diag;
265
266 if ((bmsr & BMSR_ACOMP) == 0) {
267 /* Erg, still trying, I guess... */
268 mii->mii_media_active |= IFM_NONE;
269 return;
270 }
271
272 diag = PHY_READ(sc, MII_ACPHY_DIAG);
273 if (diag & AC_DIAG_SPEED)
274 mii->mii_media_active |= IFM_100_TX;
275 else
276 mii->mii_media_active |= IFM_10_T;
277
278 if (diag & AC_DIAG_DUPLEX)
279 mii->mii_media_active |= IFM_FDX;
280 } else {
281 mii->mii_media_active = ife->ifm_media;
282 }
283 }
284
285 static void
286 acphy_reset(struct mii_softc *sc)
287 {
288 mii_phy_reset(sc);
289 PHY_WRITE(sc, MII_ACPHY_INT, 0);
290 }
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