FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/bmtphy.c
1 /*
2 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
7 * NASA Ames Research Center.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the NetBSD
20 * Foundation, Inc. and its contributors.
21 * 4. Neither the name of The NetBSD Foundation nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 /*
39 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. All advertising materials mentioning features or use of this software
50 * must display the following acknowledgement:
51 * This product includes software developed by Manuel Bouyer.
52 * 4. The name of the author may not be used to endorse or promote products
53 * derived from this software without specific prior written permission.
54 *
55 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
56 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
57 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
58 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
59 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
60 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
64 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 * from: NetBSD: bmtphy.c,v 1.8 2002/07/03 06:25:50 simonb Exp
67 *
68 * $FreeBSD: releng/5.0/sys/dev/mii/bmtphy.c 106107 2002-10-29 00:20:47Z semenu $
69 */
70
71 /*
72 * Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also
73 * drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in
74 * the 3c905C data sheet.
75 */
76
77 #include <sys/param.h>
78 #include <sys/systm.h>
79 #include <sys/kernel.h>
80 #include <sys/socket.h>
81 #include <sys/bus.h>
82
83 #include <net/if.h>
84 #include <net/if_media.h>
85
86 #include <dev/mii/mii.h>
87 #include <dev/mii/miivar.h>
88 #include <dev/mii/miidevs.h>
89
90 #include <dev/mii/bmtphyreg.h>
91
92 #include "miibus_if.h"
93
94 static int bmtphy_probe(device_t);
95 static int bmtphy_attach(device_t);
96
97 static device_method_t bmtphy_methods[] = {
98 /* Device interface */
99 DEVMETHOD(device_probe, bmtphy_probe),
100 DEVMETHOD(device_attach, bmtphy_attach),
101 DEVMETHOD(device_detach, mii_phy_detach),
102 DEVMETHOD(device_shutdown, bus_generic_shutdown),
103
104 { 0, 0 }
105 };
106
107 static devclass_t bmtphy_devclass;
108
109 static driver_t bmtphy_driver = {
110 "bmtphy",
111 bmtphy_methods,
112 sizeof(struct mii_softc)
113 };
114
115 DRIVER_MODULE(bmtphy, miibus, bmtphy_driver, bmtphy_devclass, 0, 0);
116
117 static int bmtphy_service(struct mii_softc *, struct mii_data *, int);
118 static void bmtphy_status(struct mii_softc *);
119
120 static int
121 bmtphy_probe(device_t dev)
122 {
123 struct mii_attach_args *ma;
124 int rval;
125
126 ma = device_get_ivars(dev);
127 rval = 0;
128
129 if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_BROADCOM)
130 return (ENXIO);
131
132 switch (MII_MODEL(ma->mii_id2)) {
133 case MII_MODEL_BROADCOM_3C905B:
134 device_set_desc(dev, MII_STR_BROADCOM_3C905B);
135 rval = -10; /* Let exphy take precedence. */
136 break;
137 case MII_MODEL_BROADCOM_3C905C:
138 device_set_desc(dev, MII_STR_BROADCOM_3C905C);
139 rval = -10; /* Let exphy take precedence. */
140 break;
141 case MII_MODEL_BROADCOM_BCM5201:
142 device_set_desc(dev, MII_STR_BROADCOM_BCM5201);
143 break;
144 case MII_MODEL_BROADCOM_BCM5221:
145 device_set_desc(dev, MII_STR_BROADCOM_BCM5221);
146 break;
147 default:
148 return (ENXIO);
149 break;
150 }
151
152 return (rval);
153 }
154
155 static int
156 bmtphy_attach(device_t dev)
157 {
158 struct mii_softc *sc;
159 struct mii_attach_args *ma;
160 struct mii_data *mii;
161
162 sc = device_get_softc(dev);
163 ma = device_get_ivars(dev);
164 sc->mii_dev = device_get_parent(dev);
165 mii = device_get_softc(sc->mii_dev);
166 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
167
168 sc->mii_inst = mii->mii_instance;
169 sc->mii_phy = ma->mii_phyno;
170 sc->mii_service = bmtphy_service;
171 sc->mii_pdata = mii;
172
173 mii_phy_reset(sc);
174
175 mii->mii_instance++;
176
177 sc->mii_capabilities =
178 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
179 device_printf(dev, " ");
180 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
181 printf("no media present");
182 else
183 mii_phy_add_media(sc);
184
185 printf("\n");
186
187 MIIBUS_MEDIAINIT(sc->mii_dev);
188
189 return (0);
190 }
191
192 static int
193 bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
194 {
195 struct ifmedia_entry *ife;
196 int reg;
197
198 ife = mii->mii_media.ifm_cur;
199
200 switch (cmd) {
201 case MII_POLLSTAT:
202 /*
203 * If we're not polling our PHY instance, just return.
204 */
205 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
206 return (0);
207 break;
208
209 case MII_MEDIACHG:
210 /*
211 * If the media indicates a different PHY instance,
212 * isolate ourselves.
213 */
214 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
215 reg = PHY_READ(sc, MII_BMCR);
216 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
217 return (0);
218 }
219
220 /*
221 * If the interface is not up, don't do anything.
222 */
223 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
224 break;
225
226 mii_phy_setmedia(sc);
227 break;
228
229 case MII_TICK:
230 /*
231 * If we're not currently selected, just return.
232 */
233 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
234 return (0);
235 if (mii_phy_tick(sc) == EJUSTRETURN)
236 return (0);
237 break;
238 }
239
240 /* Update the media status. */
241 bmtphy_status(sc);
242
243 /* Callback if something changed. */
244 mii_phy_update(sc, cmd);
245
246 return (0);
247 }
248
249 static void
250 bmtphy_status(struct mii_softc *sc)
251 {
252 struct mii_data *mii;
253 struct ifmedia_entry *ife;
254 int bmsr, bmcr, aux_csr;
255
256 mii = sc->mii_pdata;
257 ife = mii->mii_media.ifm_cur;
258
259 mii->mii_media_status = IFM_AVALID;
260 mii->mii_media_active = IFM_ETHER;
261
262 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
263 aux_csr = PHY_READ(sc, MII_BMTPHY_AUX_CSR);
264
265 if (bmsr & BMSR_LINK)
266 mii->mii_media_status |= IFM_ACTIVE;
267
268 bmcr = PHY_READ(sc, MII_BMCR);
269 if (bmcr & BMCR_ISO) {
270 mii->mii_media_active |= IFM_NONE;
271 mii->mii_media_status = 0;
272 return;
273 }
274
275 if (bmcr & BMCR_LOOP)
276 mii->mii_media_active |= IFM_LOOP;
277
278 if (bmcr & BMCR_AUTOEN) {
279 /*
280 * The media status bits are only valid if autonegotiation
281 * has completed (or it's disabled).
282 */
283 if ((bmsr & BMSR_ACOMP) == 0) {
284 /* Erg, still trying, I guess... */
285 mii->mii_media_active |= IFM_NONE;
286 return;
287 }
288
289 if (aux_csr & AUX_CSR_SPEED)
290 mii->mii_media_active |= IFM_100_TX;
291 else
292 mii->mii_media_active |= IFM_10_T;
293 if (aux_csr & AUX_CSR_FDX)
294 mii->mii_media_active |= IFM_FDX;
295 } else
296 mii->mii_media_active = ife->ifm_media;
297 }
Cache object: 27c5a3dec228272e8c2f3504839e4621
|