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 */
33
34#include <sys/cdefs.h>
| 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 */
33
34#include <sys/cdefs.h>
|
36
37/*
38 * driver for Micro Linear 6692 PHYs
39 *
40 * The Micro Linear 6692 is a strange beast, and dealing with it using
41 * this code framework is tricky. The 6692 is actually a 100Mbps-only
42 * device, which means that a second PHY is required to support 10Mbps
43 * modes. However, even though the 6692 does not support 10Mbps modes,
44 * it can still advertise them when performing autonegotiation. If a
45 * 10Mbps mode is negotiated, we must program the registers of the
46 * companion PHY accordingly in addition to programming the registers
47 * of the 6692.
48 *
49 * This device also does not have vendor/device ID registers.
50 */
51
52#include <sys/param.h>
53#include <sys/systm.h>
54#include <sys/kernel.h>
55#include <sys/socket.h>
56#include <sys/module.h>
57#include <sys/bus.h>
58#include <sys/malloc.h>
59
60#include <net/if.h>
61#include <net/if_media.h>
62
63#include <dev/mii/mii.h>
64#include <dev/mii/miivar.h>
65
66#include "miibus_if.h"
67
68#define ML_STATE_AUTO_SELF 1
69#define ML_STATE_AUTO_OTHER 2
70
71struct mlphy_softc {
72 struct mii_softc ml_mii;
73 int ml_state;
74 int ml_linked;
75};
76
77static int mlphy_probe(device_t);
78static int mlphy_attach(device_t);
79
80static device_method_t mlphy_methods[] = {
81 /* device interface */
82 DEVMETHOD(device_probe, mlphy_probe),
83 DEVMETHOD(device_attach, mlphy_attach),
84 DEVMETHOD(device_detach, mii_phy_detach),
85 DEVMETHOD(device_shutdown, bus_generic_shutdown),
86 { 0, 0 }
87};
88
89static devclass_t mlphy_devclass;
90
91static driver_t mlphy_driver = {
92 "mlphy",
93 mlphy_methods,
94 sizeof(struct mlphy_softc)
95};
96
97DRIVER_MODULE(mlphy, miibus, mlphy_driver, mlphy_devclass, 0, 0);
98
99static int mlphy_service(struct mii_softc *, struct mii_data *, int);
100static void mlphy_reset(struct mii_softc *);
101static void mlphy_status(struct mii_softc *);
102
103static int
104mlphy_probe(dev)
105 device_t dev;
106{
107 struct mii_attach_args *ma;
108 device_t parent;
109
110 ma = device_get_ivars(dev);
111 parent = device_get_parent(device_get_parent(dev));
112
113 /*
114 * Micro Linear PHY reports oui == 0 model == 0
115 */
116 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
117 MII_MODEL(ma->mii_id2) != 0)
118 return (ENXIO);
119
120 /*
121 * Make sure the parent is a `tl'. So far, I have only
122 * encountered the 6692 on an Olicom card with a ThunderLAN
123 * controller chip.
124 */
125 if (strcmp(device_get_name(parent), "tl") != 0)
126 return (ENXIO);
127
128 device_set_desc(dev, "Micro Linear 6692 media interface");
129
130 return (BUS_PROBE_DEFAULT);
131}
132
133static int
134mlphy_attach(dev)
135 device_t dev;
136{
137 struct mlphy_softc *msc;
138 struct mii_softc *sc;
139 struct mii_attach_args *ma;
140 struct mii_data *mii;
141
142 msc = device_get_softc(dev);
143 sc = &msc->ml_mii;
144 ma = device_get_ivars(dev);
145 sc->mii_dev = device_get_parent(dev);
| 36
37/*
38 * driver for Micro Linear 6692 PHYs
39 *
40 * The Micro Linear 6692 is a strange beast, and dealing with it using
41 * this code framework is tricky. The 6692 is actually a 100Mbps-only
42 * device, which means that a second PHY is required to support 10Mbps
43 * modes. However, even though the 6692 does not support 10Mbps modes,
44 * it can still advertise them when performing autonegotiation. If a
45 * 10Mbps mode is negotiated, we must program the registers of the
46 * companion PHY accordingly in addition to programming the registers
47 * of the 6692.
48 *
49 * This device also does not have vendor/device ID registers.
50 */
51
52#include <sys/param.h>
53#include <sys/systm.h>
54#include <sys/kernel.h>
55#include <sys/socket.h>
56#include <sys/module.h>
57#include <sys/bus.h>
58#include <sys/malloc.h>
59
60#include <net/if.h>
61#include <net/if_media.h>
62
63#include <dev/mii/mii.h>
64#include <dev/mii/miivar.h>
65
66#include "miibus_if.h"
67
68#define ML_STATE_AUTO_SELF 1
69#define ML_STATE_AUTO_OTHER 2
70
71struct mlphy_softc {
72 struct mii_softc ml_mii;
73 int ml_state;
74 int ml_linked;
75};
76
77static int mlphy_probe(device_t);
78static int mlphy_attach(device_t);
79
80static device_method_t mlphy_methods[] = {
81 /* device interface */
82 DEVMETHOD(device_probe, mlphy_probe),
83 DEVMETHOD(device_attach, mlphy_attach),
84 DEVMETHOD(device_detach, mii_phy_detach),
85 DEVMETHOD(device_shutdown, bus_generic_shutdown),
86 { 0, 0 }
87};
88
89static devclass_t mlphy_devclass;
90
91static driver_t mlphy_driver = {
92 "mlphy",
93 mlphy_methods,
94 sizeof(struct mlphy_softc)
95};
96
97DRIVER_MODULE(mlphy, miibus, mlphy_driver, mlphy_devclass, 0, 0);
98
99static int mlphy_service(struct mii_softc *, struct mii_data *, int);
100static void mlphy_reset(struct mii_softc *);
101static void mlphy_status(struct mii_softc *);
102
103static int
104mlphy_probe(dev)
105 device_t dev;
106{
107 struct mii_attach_args *ma;
108 device_t parent;
109
110 ma = device_get_ivars(dev);
111 parent = device_get_parent(device_get_parent(dev));
112
113 /*
114 * Micro Linear PHY reports oui == 0 model == 0
115 */
116 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
117 MII_MODEL(ma->mii_id2) != 0)
118 return (ENXIO);
119
120 /*
121 * Make sure the parent is a `tl'. So far, I have only
122 * encountered the 6692 on an Olicom card with a ThunderLAN
123 * controller chip.
124 */
125 if (strcmp(device_get_name(parent), "tl") != 0)
126 return (ENXIO);
127
128 device_set_desc(dev, "Micro Linear 6692 media interface");
129
130 return (BUS_PROBE_DEFAULT);
131}
132
133static int
134mlphy_attach(dev)
135 device_t dev;
136{
137 struct mlphy_softc *msc;
138 struct mii_softc *sc;
139 struct mii_attach_args *ma;
140 struct mii_data *mii;
141
142 msc = device_get_softc(dev);
143 sc = &msc->ml_mii;
144 ma = device_get_ivars(dev);
145 sc->mii_dev = device_get_parent(dev);
|
147 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
148
149 sc->mii_inst = mii->mii_instance;
150 sc->mii_phy = ma->mii_phyno;
151 sc->mii_service = mlphy_service;
152 sc->mii_pdata = mii;
153
154 mii->mii_instance++;
155
156#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
157
158#if 0 /* See above. */
159 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
160 BMCR_ISO);
161#endif
162 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
163 BMCR_LOOP|BMCR_S100);
164
165 sc->mii_flags &= ~MIIF_NOISOLATE;
166 mii_phy_reset(sc);
167 sc->mii_flags |= MIIF_NOISOLATE;
168
169 sc->mii_capabilities =
170 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
171 ma->mii_capmask = ~sc->mii_capabilities;
172 device_printf(dev, " ");
173 mii_add_media(sc);
174 printf("\n");
175#undef ADD
176 MIIBUS_MEDIAINIT(sc->mii_dev);
177 return (0);
178}
179
180static struct mii_softc *
181mlphy_find_other(device_t mii)
182{
183 device_t *devlist;
184 struct mii_softc *retval;
185 int i, devs;
186
187 retval = NULL;
188 if (device_get_children(mii, &devlist, &devs))
189 return (NULL);
190 for (i = 0; i < devs; i++)
191 if (strcmp(device_get_name(devlist[i]), "mlphy")) {
192 retval = device_get_softc(devlist[i]);
193 break;
194 }
195 free(devlist, M_TEMP);
196 return (retval);
197}
198
199static int
200mlphy_service(xsc, mii, cmd)
201 struct mii_softc *xsc;
202 struct mii_data *mii;
203 int cmd;
204{
205 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
206 struct mii_softc *other = NULL;
207 struct mlphy_softc *msc = (struct mlphy_softc *)xsc;
208 struct mii_softc *sc = (struct mii_softc *)&msc->ml_mii;
209 int other_inst, reg;
210
211 /*
212 * See if there's another PHY on this bus with us.
213 * If so, we may need it for 10Mbps modes.
214 */
215 other = mlphy_find_other(msc->ml_mii.mii_dev);
216
217 switch (cmd) {
218 case MII_POLLSTAT:
219 /*
220 * If we're not polling our PHY instance, just return.
221 */
222 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
223 return (0);
224 break;
225
226 case MII_MEDIACHG:
227 /*
228 * If the media indicates a different PHY instance,
229 * isolate ourselves.
230 */
231 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
232 reg = PHY_READ(sc, MII_BMCR);
233 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
234 return (0);
235 }
236
237 /*
238 * If the interface is not up, don't do anything.
239 */
240 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
241 break;
242
243 switch (IFM_SUBTYPE(ife->ifm_media)) {
244 case IFM_AUTO:
245 /*
246 * For autonegotiation, reset and isolate the
247 * companion PHY (if any) and then do NWAY
248 * autonegotiation ourselves.
249 */
250 msc->ml_state = ML_STATE_AUTO_SELF;
251 if (other != NULL) {
252 mii_phy_reset(other);
253 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
254 }
255 (void) mii_phy_auto(sc);
256 msc->ml_linked = 0;
257 return (0);
258 case IFM_10_T:
259 /*
260 * For 10baseT modes, reset and program the
261 * companion PHY (of any), then program ourselves
262 * to match. This will put us in pass-through
263 * mode and let the companion PHY do all the
264 * work.
265 *
266 * BMCR data is stored in the ifmedia entry.
267 */
268 if (other != NULL) {
269 mii_phy_reset(other);
270 PHY_WRITE(other, MII_BMCR, ife->ifm_data);
271 }
272 PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media));
273 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
274 msc->ml_state = 0;
275 break;
276 case IFM_100_TX:
277 /*
278 * For 100baseTX modes, reset and isolate the
279 * companion PHY (if any), then program ourselves
280 * accordingly.
281 *
282 * BMCR data is stored in the ifmedia entry.
283 */
284 if (other != NULL) {
285 mii_phy_reset(other);
286 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
287 }
288 PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media));
289 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
290 msc->ml_state = 0;
291 break;
292 case IFM_100_T4:
293 /*
294 * XXX Not supported as a manual setting right now.
295 */
296 return (EINVAL);
297 default:
298 break;
299
300 }
301 break;
302
303 case MII_TICK:
304 /*
305 * If we're not currently selected, just return.
306 */
307 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
308 return (0);
309
310 /*
311 * Is the interface even up?
312 */
313 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
314 return (0);
315
316 /*
317 * Only used for autonegotiation.
318 */
319 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
320 break;
321
322 /*
323 * Check to see if we have link. If we do, we don't
324 * need to restart the autonegotiation process. Read
325 * the BMSR twice in case it's latched.
326 * If we're in a 10Mbps mode, check the link of the
327 * 10Mbps PHY. Sometimes the Micro Linear PHY's
328 * linkstat bit will clear while the linkstat bit of
329 * the companion PHY will remain set.
330 */
331 if (msc->ml_state == ML_STATE_AUTO_OTHER) {
332 reg = PHY_READ(other, MII_BMSR) |
333 PHY_READ(other, MII_BMSR);
334 } else {
335 reg = PHY_READ(sc, MII_BMSR) |
336 PHY_READ(sc, MII_BMSR);
337 }
338
339 if (reg & BMSR_LINK) {
340 if (!msc->ml_linked) {
341 msc->ml_linked = 1;
342 mlphy_status(sc);
343 }
344 break;
345 }
346
347 /*
348 * Only retry autonegotiation every 5 seconds.
349 */
350 if (++sc->mii_ticks <= MII_ANEGTICKS)
351 break;
352
353 sc->mii_ticks = 0;
354 msc->ml_linked = 0;
355 mii->mii_media_active = IFM_NONE;
356 mii_phy_reset(sc);
357 msc->ml_state = ML_STATE_AUTO_SELF;
358 if (other != NULL) {
359 mii_phy_reset(other);
360 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
361 }
362 mii_phy_auto(sc);
363 return (0);
364 }
365
366 /* Update the media status. */
367
368 if (msc->ml_state == ML_STATE_AUTO_OTHER) {
369 other_inst = other->mii_inst;
370 other->mii_inst = sc->mii_inst;
371 (void) (*other->mii_service)(other, mii, MII_POLLSTAT);
372 other->mii_inst = other_inst;
373 sc->mii_media_active = other->mii_media_active;
374 sc->mii_media_status = other->mii_media_status;
375 } else
376 ukphy_status(sc);
377
378 /* Callback if something changed. */
379 mii_phy_update(sc, cmd);
380 return (0);
381}
382
383/*
384 * The Micro Linear PHY comes out of reset with the 'autoneg
385 * enable' bit set, which we don't want.
386 */
387static void
388mlphy_reset(sc)
389 struct mii_softc *sc;
390{
391 int reg;
392
393 mii_phy_reset(sc);
394 reg = PHY_READ(sc, MII_BMCR);
395 reg &= ~BMCR_AUTOEN;
396 PHY_WRITE(sc, MII_BMCR, reg);
397}
398
399/*
400 * If we negotiate a 10Mbps mode, we need to check for an alternate
401 * PHY and make sure it's enabled and set correctly.
402 */
403static void
404mlphy_status(sc)
405 struct mii_softc *sc;
406{
407 struct mlphy_softc *msc = (struct mlphy_softc *)sc;
408 struct mii_data *mii = msc->ml_mii.mii_pdata;
409 struct mii_softc *other = NULL;
410
411 /* See if there's another PHY on the bus with us. */
412 other = mlphy_find_other(msc->ml_mii.mii_dev);
413 if (other == NULL)
414 return;
415
416 ukphy_status(sc);
417
418 if (IFM_SUBTYPE(mii->mii_media_active) != IFM_10_T) {
419 msc->ml_state = ML_STATE_AUTO_SELF;
420 mii_phy_reset(other);
421 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
422 }
423
424 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) {
425 msc->ml_state = ML_STATE_AUTO_OTHER;
426 mlphy_reset(&msc->ml_mii);
427 PHY_WRITE(&msc->ml_mii, MII_BMCR, BMCR_ISO);
428 mii_phy_reset(other);
429 mii_phy_auto(other);
430 }
431}
| 147 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
148
149 sc->mii_inst = mii->mii_instance;
150 sc->mii_phy = ma->mii_phyno;
151 sc->mii_service = mlphy_service;
152 sc->mii_pdata = mii;
153
154 mii->mii_instance++;
155
156#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
157
158#if 0 /* See above. */
159 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
160 BMCR_ISO);
161#endif
162 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
163 BMCR_LOOP|BMCR_S100);
164
165 sc->mii_flags &= ~MIIF_NOISOLATE;
166 mii_phy_reset(sc);
167 sc->mii_flags |= MIIF_NOISOLATE;
168
169 sc->mii_capabilities =
170 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
171 ma->mii_capmask = ~sc->mii_capabilities;
172 device_printf(dev, " ");
173 mii_add_media(sc);
174 printf("\n");
175#undef ADD
176 MIIBUS_MEDIAINIT(sc->mii_dev);
177 return (0);
178}
179
180static struct mii_softc *
181mlphy_find_other(device_t mii)
182{
183 device_t *devlist;
184 struct mii_softc *retval;
185 int i, devs;
186
187 retval = NULL;
188 if (device_get_children(mii, &devlist, &devs))
189 return (NULL);
190 for (i = 0; i < devs; i++)
191 if (strcmp(device_get_name(devlist[i]), "mlphy")) {
192 retval = device_get_softc(devlist[i]);
193 break;
194 }
195 free(devlist, M_TEMP);
196 return (retval);
197}
198
199static int
200mlphy_service(xsc, mii, cmd)
201 struct mii_softc *xsc;
202 struct mii_data *mii;
203 int cmd;
204{
205 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
206 struct mii_softc *other = NULL;
207 struct mlphy_softc *msc = (struct mlphy_softc *)xsc;
208 struct mii_softc *sc = (struct mii_softc *)&msc->ml_mii;
209 int other_inst, reg;
210
211 /*
212 * See if there's another PHY on this bus with us.
213 * If so, we may need it for 10Mbps modes.
214 */
215 other = mlphy_find_other(msc->ml_mii.mii_dev);
216
217 switch (cmd) {
218 case MII_POLLSTAT:
219 /*
220 * If we're not polling our PHY instance, just return.
221 */
222 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
223 return (0);
224 break;
225
226 case MII_MEDIACHG:
227 /*
228 * If the media indicates a different PHY instance,
229 * isolate ourselves.
230 */
231 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
232 reg = PHY_READ(sc, MII_BMCR);
233 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
234 return (0);
235 }
236
237 /*
238 * If the interface is not up, don't do anything.
239 */
240 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
241 break;
242
243 switch (IFM_SUBTYPE(ife->ifm_media)) {
244 case IFM_AUTO:
245 /*
246 * For autonegotiation, reset and isolate the
247 * companion PHY (if any) and then do NWAY
248 * autonegotiation ourselves.
249 */
250 msc->ml_state = ML_STATE_AUTO_SELF;
251 if (other != NULL) {
252 mii_phy_reset(other);
253 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
254 }
255 (void) mii_phy_auto(sc);
256 msc->ml_linked = 0;
257 return (0);
258 case IFM_10_T:
259 /*
260 * For 10baseT modes, reset and program the
261 * companion PHY (of any), then program ourselves
262 * to match. This will put us in pass-through
263 * mode and let the companion PHY do all the
264 * work.
265 *
266 * BMCR data is stored in the ifmedia entry.
267 */
268 if (other != NULL) {
269 mii_phy_reset(other);
270 PHY_WRITE(other, MII_BMCR, ife->ifm_data);
271 }
272 PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media));
273 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
274 msc->ml_state = 0;
275 break;
276 case IFM_100_TX:
277 /*
278 * For 100baseTX modes, reset and isolate the
279 * companion PHY (if any), then program ourselves
280 * accordingly.
281 *
282 * BMCR data is stored in the ifmedia entry.
283 */
284 if (other != NULL) {
285 mii_phy_reset(other);
286 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
287 }
288 PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media));
289 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
290 msc->ml_state = 0;
291 break;
292 case IFM_100_T4:
293 /*
294 * XXX Not supported as a manual setting right now.
295 */
296 return (EINVAL);
297 default:
298 break;
299
300 }
301 break;
302
303 case MII_TICK:
304 /*
305 * If we're not currently selected, just return.
306 */
307 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
308 return (0);
309
310 /*
311 * Is the interface even up?
312 */
313 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
314 return (0);
315
316 /*
317 * Only used for autonegotiation.
318 */
319 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
320 break;
321
322 /*
323 * Check to see if we have link. If we do, we don't
324 * need to restart the autonegotiation process. Read
325 * the BMSR twice in case it's latched.
326 * If we're in a 10Mbps mode, check the link of the
327 * 10Mbps PHY. Sometimes the Micro Linear PHY's
328 * linkstat bit will clear while the linkstat bit of
329 * the companion PHY will remain set.
330 */
331 if (msc->ml_state == ML_STATE_AUTO_OTHER) {
332 reg = PHY_READ(other, MII_BMSR) |
333 PHY_READ(other, MII_BMSR);
334 } else {
335 reg = PHY_READ(sc, MII_BMSR) |
336 PHY_READ(sc, MII_BMSR);
337 }
338
339 if (reg & BMSR_LINK) {
340 if (!msc->ml_linked) {
341 msc->ml_linked = 1;
342 mlphy_status(sc);
343 }
344 break;
345 }
346
347 /*
348 * Only retry autonegotiation every 5 seconds.
349 */
350 if (++sc->mii_ticks <= MII_ANEGTICKS)
351 break;
352
353 sc->mii_ticks = 0;
354 msc->ml_linked = 0;
355 mii->mii_media_active = IFM_NONE;
356 mii_phy_reset(sc);
357 msc->ml_state = ML_STATE_AUTO_SELF;
358 if (other != NULL) {
359 mii_phy_reset(other);
360 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
361 }
362 mii_phy_auto(sc);
363 return (0);
364 }
365
366 /* Update the media status. */
367
368 if (msc->ml_state == ML_STATE_AUTO_OTHER) {
369 other_inst = other->mii_inst;
370 other->mii_inst = sc->mii_inst;
371 (void) (*other->mii_service)(other, mii, MII_POLLSTAT);
372 other->mii_inst = other_inst;
373 sc->mii_media_active = other->mii_media_active;
374 sc->mii_media_status = other->mii_media_status;
375 } else
376 ukphy_status(sc);
377
378 /* Callback if something changed. */
379 mii_phy_update(sc, cmd);
380 return (0);
381}
382
383/*
384 * The Micro Linear PHY comes out of reset with the 'autoneg
385 * enable' bit set, which we don't want.
386 */
387static void
388mlphy_reset(sc)
389 struct mii_softc *sc;
390{
391 int reg;
392
393 mii_phy_reset(sc);
394 reg = PHY_READ(sc, MII_BMCR);
395 reg &= ~BMCR_AUTOEN;
396 PHY_WRITE(sc, MII_BMCR, reg);
397}
398
399/*
400 * If we negotiate a 10Mbps mode, we need to check for an alternate
401 * PHY and make sure it's enabled and set correctly.
402 */
403static void
404mlphy_status(sc)
405 struct mii_softc *sc;
406{
407 struct mlphy_softc *msc = (struct mlphy_softc *)sc;
408 struct mii_data *mii = msc->ml_mii.mii_pdata;
409 struct mii_softc *other = NULL;
410
411 /* See if there's another PHY on the bus with us. */
412 other = mlphy_find_other(msc->ml_mii.mii_dev);
413 if (other == NULL)
414 return;
415
416 ukphy_status(sc);
417
418 if (IFM_SUBTYPE(mii->mii_media_active) != IFM_10_T) {
419 msc->ml_state = ML_STATE_AUTO_SELF;
420 mii_phy_reset(other);
421 PHY_WRITE(other, MII_BMCR, BMCR_ISO);
422 }
423
424 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T) {
425 msc->ml_state = ML_STATE_AUTO_OTHER;
426 mlphy_reset(&msc->ml_mii);
427 PHY_WRITE(&msc->ml_mii, MII_BMCR, BMCR_ISO);
428 mii_phy_reset(other);
429 mii_phy_auto(other);
430 }
431}
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