1/*
2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 *
| 1/*
2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 *
|
32 * $FreeBSD: head/sys/dev/mii/mlphy.c 95705 2002-04-29 06:48:20Z phk $
| 32 * $FreeBSD: head/sys/dev/mii/mlphy.c 95722 2002-04-29 13:07:38Z phk $
|
33 */
34
35/*
36 * driver for Micro Linear 6692 PHYs
37 *
38 * The Micro Linear 6692 is a strange beast, and dealing with it using
39 * this code framework is tricky. The 6692 is actually a 100Mbps-only
40 * device, which means that a second PHY is required to support 10Mbps
41 * modes. However, even though the 6692 does not support 10Mbps modes,
42 * it can still advertise them when performing autonegotiation. If a
43 * 10Mbps mode is negotiated, we must program the registers of the
44 * companion PHY accordingly in addition to programming the registers
45 * of the 6692.
46 *
47 * This device also does not have vendor/device ID registers.
48 */
49
50#include <sys/param.h>
51#include <sys/systm.h>
52#include <sys/kernel.h>
53#include <sys/socket.h>
54#include <sys/module.h>
55#include <sys/bus.h>
56#include <sys/malloc.h>
57
58#include <net/if.h>
59#include <net/if_media.h>
60
61#include <dev/mii/mii.h>
62#include <dev/mii/miivar.h>
63
64#include "miibus_if.h"
65
66#define ML_STATE_AUTO_SELF 1
67#define ML_STATE_AUTO_OTHER 2
68
69struct mlphy_softc {
70 struct mii_softc ml_mii;
71 int ml_state;
72 int ml_linked;
73};
74
75static int mlphy_probe (device_t);
76static int mlphy_attach (device_t);
| 33 */
34
35/*
36 * driver for Micro Linear 6692 PHYs
37 *
38 * The Micro Linear 6692 is a strange beast, and dealing with it using
39 * this code framework is tricky. The 6692 is actually a 100Mbps-only
40 * device, which means that a second PHY is required to support 10Mbps
41 * modes. However, even though the 6692 does not support 10Mbps modes,
42 * it can still advertise them when performing autonegotiation. If a
43 * 10Mbps mode is negotiated, we must program the registers of the
44 * companion PHY accordingly in addition to programming the registers
45 * of the 6692.
46 *
47 * This device also does not have vendor/device ID registers.
48 */
49
50#include <sys/param.h>
51#include <sys/systm.h>
52#include <sys/kernel.h>
53#include <sys/socket.h>
54#include <sys/module.h>
55#include <sys/bus.h>
56#include <sys/malloc.h>
57
58#include <net/if.h>
59#include <net/if_media.h>
60
61#include <dev/mii/mii.h>
62#include <dev/mii/miivar.h>
63
64#include "miibus_if.h"
65
66#define ML_STATE_AUTO_SELF 1
67#define ML_STATE_AUTO_OTHER 2
68
69struct mlphy_softc {
70 struct mii_softc ml_mii;
71 int ml_state;
72 int ml_linked;
73};
74
75static int mlphy_probe (device_t);
76static int mlphy_attach (device_t);
|
77static int mlphy_detach (device_t);
| |
78
79static device_method_t mlphy_methods[] = {
80 /* device interface */
81 DEVMETHOD(device_probe, mlphy_probe),
82 DEVMETHOD(device_attach, mlphy_attach),
| 77
78static device_method_t mlphy_methods[] = {
79 /* device interface */
80 DEVMETHOD(device_probe, mlphy_probe),
81 DEVMETHOD(device_attach, mlphy_attach),
|
83 DEVMETHOD(device_detach, mlphy_detach),
| 82 DEVMETHOD(device_detach, mii_phy_detach),
|
84 DEVMETHOD(device_shutdown, bus_generic_shutdown),
85 { 0, 0 }
86};
87
88static devclass_t mlphy_devclass;
89
90static driver_t mlphy_driver = {
91 "mlphy",
92 mlphy_methods,
93 sizeof(struct mlphy_softc)
94};
95
96DRIVER_MODULE(mlphy, miibus, mlphy_driver, mlphy_devclass, 0, 0);
97
98static int mlphy_service(struct mii_softc *, struct mii_data *, int);
99static void mlphy_reset(struct mii_softc *);
100static void mlphy_status(struct mii_softc *);
101
102static int mlphy_probe(dev)
103 device_t dev;
104{
105 struct mii_attach_args *ma;
106 device_t parent;
107
108 ma = device_get_ivars(dev);
109 parent = device_get_parent(device_get_parent(dev));
110
111 /*
112 * Micro Linear PHY reports oui == 0 model == 0
113 */
114 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
115 MII_MODEL(ma->mii_id2) != 0)
116 return (ENXIO);
117
118 /*
119 * Make sure the parent is a `tl'. So far, I have only
120 * encountered the 6692 on an Olicom card with a ThunderLAN
121 * controller chip.
122 */
123 if (strcmp(device_get_name(parent), "tl") != 0)
124 return (ENXIO);
125
126 device_set_desc(dev, "Micro Linear 6692 media interface");
127
128 return (0);
129}
130
131static int mlphy_attach(dev)
132 device_t dev;
133{
134 struct mlphy_softc *msc;
135 struct mii_softc *sc;
136 struct mii_attach_args *ma;
137 struct mii_data *mii;
138
139 msc = device_get_softc(dev);
140 sc = &msc->ml_mii;
141 ma = device_get_ivars(dev);
142 sc->mii_dev = device_get_parent(dev);
143 mii = device_get_softc(sc->mii_dev);
144 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
145
146 sc->mii_inst = mii->mii_instance;
147 sc->mii_phy = ma->mii_phyno;
148 sc->mii_service = mlphy_service;
149 sc->mii_pdata = mii;
150
151 mii->mii_instance++;
152
153#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
154
155#if 0 /* See above. */
156 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
157 BMCR_ISO);
158#endif
159 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
160 BMCR_LOOP|BMCR_S100);
161
162 sc->mii_flags &= ~MIIF_NOISOLATE;
163 mii_phy_reset(sc);
164 sc->mii_flags |= MIIF_NOISOLATE;
165
166 sc->mii_capabilities =
167 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
168 ma->mii_capmask = ~sc->mii_capabilities;
169 device_printf(dev, " ");
170 mii_add_media(sc);
171 printf("\n");
172#undef ADD
173 MIIBUS_MEDIAINIT(sc->mii_dev);
174 return(0);
175}
176
| 83 DEVMETHOD(device_shutdown, bus_generic_shutdown),
84 { 0, 0 }
85};
86
87static devclass_t mlphy_devclass;
88
89static driver_t mlphy_driver = {
90 "mlphy",
91 mlphy_methods,
92 sizeof(struct mlphy_softc)
93};
94
95DRIVER_MODULE(mlphy, miibus, mlphy_driver, mlphy_devclass, 0, 0);
96
97static int mlphy_service(struct mii_softc *, struct mii_data *, int);
98static void mlphy_reset(struct mii_softc *);
99static void mlphy_status(struct mii_softc *);
100
101static int mlphy_probe(dev)
102 device_t dev;
103{
104 struct mii_attach_args *ma;
105 device_t parent;
106
107 ma = device_get_ivars(dev);
108 parent = device_get_parent(device_get_parent(dev));
109
110 /*
111 * Micro Linear PHY reports oui == 0 model == 0
112 */
113 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
114 MII_MODEL(ma->mii_id2) != 0)
115 return (ENXIO);
116
117 /*
118 * Make sure the parent is a `tl'. So far, I have only
119 * encountered the 6692 on an Olicom card with a ThunderLAN
120 * controller chip.
121 */
122 if (strcmp(device_get_name(parent), "tl") != 0)
123 return (ENXIO);
124
125 device_set_desc(dev, "Micro Linear 6692 media interface");
126
127 return (0);
128}
129
130static int mlphy_attach(dev)
131 device_t dev;
132{
133 struct mlphy_softc *msc;
134 struct mii_softc *sc;
135 struct mii_attach_args *ma;
136 struct mii_data *mii;
137
138 msc = device_get_softc(dev);
139 sc = &msc->ml_mii;
140 ma = device_get_ivars(dev);
141 sc->mii_dev = device_get_parent(dev);
142 mii = device_get_softc(sc->mii_dev);
143 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
144
145 sc->mii_inst = mii->mii_instance;
146 sc->mii_phy = ma->mii_phyno;
147 sc->mii_service = mlphy_service;
148 sc->mii_pdata = mii;
149
150 mii->mii_instance++;
151
152#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
153
154#if 0 /* See above. */
155 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
156 BMCR_ISO);
157#endif
158 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
159 BMCR_LOOP|BMCR_S100);
160
161 sc->mii_flags &= ~MIIF_NOISOLATE;
162 mii_phy_reset(sc);
163 sc->mii_flags |= MIIF_NOISOLATE;
164
165 sc->mii_capabilities =
166 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
167 ma->mii_capmask = ~sc->mii_capabilities;
168 device_printf(dev, " ");
169 mii_add_media(sc);
170 printf("\n");
171#undef ADD
172 MIIBUS_MEDIAINIT(sc->mii_dev);
173 return(0);
174}
175
|
177static int mlphy_detach(dev)
178 device_t dev;
179{
180 struct mlphy_softc *sc;
181 struct mii_data *mii;
182
183 sc = device_get_softc(dev);
184 mii = device_get_softc(device_get_parent(dev));
185 mii_phy_auto_stop(&sc->ml_mii);
186 sc->ml_mii.mii_dev = NULL;
187 LIST_REMOVE(&sc->ml_mii, mii_list);
188
189 return(0);
190}
191
| |
192static int
193mlphy_service(xsc, mii, cmd)
194 struct mii_softc *xsc;
195 struct mii_data *mii;
196 int cmd;
197{
198 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
199 int reg;
200 struct mii_softc *other = NULL;
201 struct mlphy_softc *msc = (struct mlphy_softc *)xsc;
202 struct mii_softc *sc = (struct mii_softc *)&msc->ml_mii;
203 device_t *devlist;
204 int devs, i;
205
206 /*
207 * See if there's another PHY on this bus with us.
208 * If so, we may need it for 10Mbps modes.
209 */
210 device_get_children(msc->ml_mii.mii_dev, &devlist, &devs);
211 for (i = 0; i < devs; i++) {
212 if (strcmp(device_get_name(devlist[i]), "mlphy")) {
213 other = device_get_softc(devlist[i]);
214 break;
215 }
216 }
217 free(devlist, M_TEMP);
218
219 switch (cmd) {
220 case MII_POLLSTAT:
221 /*
222 * If we're not polling our PHY instance, just return.
223 */
224 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
225 return (0);
226 break;
227
228 case MII_MEDIACHG:
229 /*
230 * If the media indicates a different PHY instance,
231 * isolate ourselves.
232 */
233 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
234 reg = PHY_READ(sc, MII_BMCR);
235 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
236 return (0);
237 }
238
239 /*
240 * If the interface is not up, don't do anything.
241 */
242 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
243 break;
244
245 switch (IFM_SUBTYPE(ife->ifm_media)) {
246 case IFM_AUTO:
247 /*
248 * For autonegotiation, reset and isolate the
249 * companion PHY (if any) and then do NWAY
250 * autonegotiation ourselves.
251 */
252 msc->ml_state = ML_STATE_AUTO_SELF;
253 if (other != NULL) {
254 mii_phy_reset(other);
255 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
256 }
257 (void) mii_phy_auto(sc, 1);
258 msc->ml_linked = 0;
259 return(0);
260 break;
261 case IFM_10_T:
262 /*
263 * For 10baseT modes, reset and program the
264 * companion PHY (of any), then program ourselves
265 * to match. This will put us in pass-through
266 * mode and let the companion PHY do all the
267 * work.
268 *
269 * BMCR data is stored in the ifmedia entry.
270 */
271 if (other != NULL) {
272 mii_phy_reset(other);
273 PHY_WRITE(other, MII_BMCR, ife->ifm_data);
274 }
275 PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media));
276 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
277 msc->ml_state = 0;
278 break;
279 case IFM_100_TX:
280 /*
281 * For 100baseTX modes, reset and isolate the
282 * companion PHY (if any), then program ourselves
283 * accordingly.
284 *
285 * BMCR data is stored in the ifmedia entry.
286 */
287 if (other != NULL) {
288 mii_phy_reset(other);
289 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
290 }
291 PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media));
292 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
293 msc->ml_state = 0;
294 break;
295 case IFM_100_T4:
296 /*
297 * XXX Not supported as a manual setting right now.
298 */
299 return (EINVAL);
300 default:
301 break;
302
303 }
304 break;
305
306 case MII_TICK:
307 /*
308 * If we're not currently selected, just return.
309 */
310 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
311 return (0);
312
313 /*
314 * Is the interface even up?
315 */
316 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
317 return (0);
318
319 /*
320 * Only used for autonegotiation.
321 */
322 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
323 break;
324
325 /*
326 * Check to see if we have link. If we do, we don't
327 * need to restart the autonegotiation process. Read
328 * the BMSR twice in case it's latched.
329 * If we're in a 10Mbps mode, check the link of the
330 * 10Mbps PHY. Sometimes the Micro Linear PHY's
331 * linkstat bit will clear while the linkstat bit of
332 * the companion PHY will remain set.
333 */
334 if (msc->ml_state == ML_STATE_AUTO_OTHER) {
335 reg = PHY_READ(other, MII_BMSR) |
336 PHY_READ(other, MII_BMSR);
337 } else {
338 reg = PHY_READ(sc, MII_BMSR) |
339 PHY_READ(sc, MII_BMSR);
340 }
341
342 if (reg & BMSR_LINK) {
343 if (!msc->ml_linked) {
344 msc->ml_linked = 1;
345 mlphy_status(sc);
346 }
347 break;
348 }
349
350 /*
351 * Only retry autonegotiation every 5 seconds.
352 */
353 if (++sc->mii_ticks != 5)
354 return (0);
355
356 sc->mii_ticks = 0;
357 msc->ml_linked = 0;
358 mii->mii_media_active = IFM_NONE;
359 mii_phy_reset(sc);
360 msc->ml_state = ML_STATE_AUTO_SELF;
361 if (other != NULL) {
362 mii_phy_reset(other);
363 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
364 }
365 if (mii_phy_auto(sc, 0) == EJUSTRETURN)
366 return(0);
367 break;
368 }
369
370 /* Update the media status. */
371
372 if (msc->ml_state == ML_STATE_AUTO_OTHER) {
373 int other_inst;
374 other_inst = other->mii_inst;
375 other->mii_inst = sc->mii_inst;
376 (void) (*other->mii_service)(other, mii, MII_POLLSTAT);
377 other->mii_inst = other_inst;
378 sc->mii_media_active = other->mii_media_active;
379 sc->mii_media_status = other->mii_media_status;
380 } else
381 ukphy_status(sc);
382
383 /* Callback if something changed. */
384 mii_phy_update(sc, cmd);
385 return (0);
386}
387
388/*
389 * The Micro Linear PHY comes out of reset with the 'autoneg
390 * enable' bit set, which we don't want.
391 */
392static void mlphy_reset(sc)
393 struct mii_softc *sc;
394{
395 int reg;
396
397 mii_phy_reset(sc);
398 reg = PHY_READ(sc, MII_BMCR);
399 reg &= ~BMCR_AUTOEN;
400 PHY_WRITE(sc, MII_BMCR, reg);
401
402 return;
403}
404
405/*
406 * If we negotiate a 10Mbps mode, we need to check for an alternate
407 * PHY and make sure it's enabled and set correctly.
408 */
409static void mlphy_status(sc)
410 struct mii_softc *sc;
411{
412 struct mlphy_softc *msc = (struct mlphy_softc *)sc;
413 struct mii_data *mii = msc->ml_mii.mii_pdata;
414 struct mii_softc *other = NULL;
415 device_t *devlist;
416 int devs, i;
417
418 /* See if there's another PHY on the bus with us. */
419 device_get_children(msc->ml_mii.mii_dev, &devlist, &devs);
420 for (i = 0; i < devs; i++) {
421 if (strcmp(device_get_name(devlist[i]), "mlphy")) {
422 other = device_get_softc(devlist[i]);
423 break;
424 }
425 }
426 free(devlist, M_TEMP);
427
428 if (other == NULL)
429 return;
430
431 ukphy_status(sc);
432
433 if (IFM_SUBTYPE(mii->mii_media_active) != IFM_10_T) {
434 msc->ml_state = ML_STATE_AUTO_SELF;
435 mii_phy_reset(other);
436 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
437 }
438
439 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) {
440 msc->ml_state = ML_STATE_AUTO_OTHER;
441 mlphy_reset(&msc->ml_mii);
442 PHY_WRITE(&msc->ml_mii, MII_BMCR, BMCR_ISO);
443 mii_phy_reset(other);
444 mii_phy_auto(other, 1);
445 }
446
447 return;
448}
| 176static int
177mlphy_service(xsc, mii, cmd)
178 struct mii_softc *xsc;
179 struct mii_data *mii;
180 int cmd;
181{
182 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
183 int reg;
184 struct mii_softc *other = NULL;
185 struct mlphy_softc *msc = (struct mlphy_softc *)xsc;
186 struct mii_softc *sc = (struct mii_softc *)&msc->ml_mii;
187 device_t *devlist;
188 int devs, i;
189
190 /*
191 * See if there's another PHY on this bus with us.
192 * If so, we may need it for 10Mbps modes.
193 */
194 device_get_children(msc->ml_mii.mii_dev, &devlist, &devs);
195 for (i = 0; i < devs; i++) {
196 if (strcmp(device_get_name(devlist[i]), "mlphy")) {
197 other = device_get_softc(devlist[i]);
198 break;
199 }
200 }
201 free(devlist, M_TEMP);
202
203 switch (cmd) {
204 case MII_POLLSTAT:
205 /*
206 * If we're not polling our PHY instance, just return.
207 */
208 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
209 return (0);
210 break;
211
212 case MII_MEDIACHG:
213 /*
214 * If the media indicates a different PHY instance,
215 * isolate ourselves.
216 */
217 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
218 reg = PHY_READ(sc, MII_BMCR);
219 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
220 return (0);
221 }
222
223 /*
224 * If the interface is not up, don't do anything.
225 */
226 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
227 break;
228
229 switch (IFM_SUBTYPE(ife->ifm_media)) {
230 case IFM_AUTO:
231 /*
232 * For autonegotiation, reset and isolate the
233 * companion PHY (if any) and then do NWAY
234 * autonegotiation ourselves.
235 */
236 msc->ml_state = ML_STATE_AUTO_SELF;
237 if (other != NULL) {
238 mii_phy_reset(other);
239 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
240 }
241 (void) mii_phy_auto(sc, 1);
242 msc->ml_linked = 0;
243 return(0);
244 break;
245 case IFM_10_T:
246 /*
247 * For 10baseT modes, reset and program the
248 * companion PHY (of any), then program ourselves
249 * to match. This will put us in pass-through
250 * mode and let the companion PHY do all the
251 * work.
252 *
253 * BMCR data is stored in the ifmedia entry.
254 */
255 if (other != NULL) {
256 mii_phy_reset(other);
257 PHY_WRITE(other, MII_BMCR, ife->ifm_data);
258 }
259 PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media));
260 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
261 msc->ml_state = 0;
262 break;
263 case IFM_100_TX:
264 /*
265 * For 100baseTX modes, reset and isolate the
266 * companion PHY (if any), then program ourselves
267 * accordingly.
268 *
269 * BMCR data is stored in the ifmedia entry.
270 */
271 if (other != NULL) {
272 mii_phy_reset(other);
273 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
274 }
275 PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media));
276 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
277 msc->ml_state = 0;
278 break;
279 case IFM_100_T4:
280 /*
281 * XXX Not supported as a manual setting right now.
282 */
283 return (EINVAL);
284 default:
285 break;
286
287 }
288 break;
289
290 case MII_TICK:
291 /*
292 * If we're not currently selected, just return.
293 */
294 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
295 return (0);
296
297 /*
298 * Is the interface even up?
299 */
300 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
301 return (0);
302
303 /*
304 * Only used for autonegotiation.
305 */
306 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
307 break;
308
309 /*
310 * Check to see if we have link. If we do, we don't
311 * need to restart the autonegotiation process. Read
312 * the BMSR twice in case it's latched.
313 * If we're in a 10Mbps mode, check the link of the
314 * 10Mbps PHY. Sometimes the Micro Linear PHY's
315 * linkstat bit will clear while the linkstat bit of
316 * the companion PHY will remain set.
317 */
318 if (msc->ml_state == ML_STATE_AUTO_OTHER) {
319 reg = PHY_READ(other, MII_BMSR) |
320 PHY_READ(other, MII_BMSR);
321 } else {
322 reg = PHY_READ(sc, MII_BMSR) |
323 PHY_READ(sc, MII_BMSR);
324 }
325
326 if (reg & BMSR_LINK) {
327 if (!msc->ml_linked) {
328 msc->ml_linked = 1;
329 mlphy_status(sc);
330 }
331 break;
332 }
333
334 /*
335 * Only retry autonegotiation every 5 seconds.
336 */
337 if (++sc->mii_ticks != 5)
338 return (0);
339
340 sc->mii_ticks = 0;
341 msc->ml_linked = 0;
342 mii->mii_media_active = IFM_NONE;
343 mii_phy_reset(sc);
344 msc->ml_state = ML_STATE_AUTO_SELF;
345 if (other != NULL) {
346 mii_phy_reset(other);
347 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
348 }
349 if (mii_phy_auto(sc, 0) == EJUSTRETURN)
350 return(0);
351 break;
352 }
353
354 /* Update the media status. */
355
356 if (msc->ml_state == ML_STATE_AUTO_OTHER) {
357 int other_inst;
358 other_inst = other->mii_inst;
359 other->mii_inst = sc->mii_inst;
360 (void) (*other->mii_service)(other, mii, MII_POLLSTAT);
361 other->mii_inst = other_inst;
362 sc->mii_media_active = other->mii_media_active;
363 sc->mii_media_status = other->mii_media_status;
364 } else
365 ukphy_status(sc);
366
367 /* Callback if something changed. */
368 mii_phy_update(sc, cmd);
369 return (0);
370}
371
372/*
373 * The Micro Linear PHY comes out of reset with the 'autoneg
374 * enable' bit set, which we don't want.
375 */
376static void mlphy_reset(sc)
377 struct mii_softc *sc;
378{
379 int reg;
380
381 mii_phy_reset(sc);
382 reg = PHY_READ(sc, MII_BMCR);
383 reg &= ~BMCR_AUTOEN;
384 PHY_WRITE(sc, MII_BMCR, reg);
385
386 return;
387}
388
389/*
390 * If we negotiate a 10Mbps mode, we need to check for an alternate
391 * PHY and make sure it's enabled and set correctly.
392 */
393static void mlphy_status(sc)
394 struct mii_softc *sc;
395{
396 struct mlphy_softc *msc = (struct mlphy_softc *)sc;
397 struct mii_data *mii = msc->ml_mii.mii_pdata;
398 struct mii_softc *other = NULL;
399 device_t *devlist;
400 int devs, i;
401
402 /* See if there's another PHY on the bus with us. */
403 device_get_children(msc->ml_mii.mii_dev, &devlist, &devs);
404 for (i = 0; i < devs; i++) {
405 if (strcmp(device_get_name(devlist[i]), "mlphy")) {
406 other = device_get_softc(devlist[i]);
407 break;
408 }
409 }
410 free(devlist, M_TEMP);
411
412 if (other == NULL)
413 return;
414
415 ukphy_status(sc);
416
417 if (IFM_SUBTYPE(mii->mii_media_active) != IFM_10_T) {
418 msc->ml_state = ML_STATE_AUTO_SELF;
419 mii_phy_reset(other);
420 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
421 }
422
423 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) {
424 msc->ml_state = ML_STATE_AUTO_OTHER;
425 mlphy_reset(&msc->ml_mii);
426 PHY_WRITE(&msc->ml_mii, MII_BMCR, BMCR_ISO);
427 mii_phy_reset(other);
428 mii_phy_auto(other, 1);
429 }
430
431 return;
432}
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