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30#include <linux/kernel.h>
31#include <linux/module.h>
32#include <linux/netdevice.h>
33#include <linux/ethtool.h>
34#include <linux/mii.h>
35
36static u32 mii_get_an(struct mii_if_info *mii, u16 addr)
37{
38 int advert;
39
40 advert = mii->mdio_read(mii->dev, mii->phy_id, addr);
41
42 return mii_lpa_to_ethtool_lpa_t(advert);
43}
44
45
46
47
48
49
50
51
52
53
54
55int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
56{
57 struct net_device *dev = mii->dev;
58 u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0;
59 u32 nego;
60
61 ecmd->supported =
62 (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
63 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
64 SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
65 if (mii->supports_gmii)
66 ecmd->supported |= SUPPORTED_1000baseT_Half |
67 SUPPORTED_1000baseT_Full;
68
69
70 ecmd->port = PORT_MII;
71
72
73 ecmd->transceiver = XCVR_INTERNAL;
74
75
76 ecmd->phy_address = mii->phy_id;
77 ecmd->mdio_support = ETH_MDIO_SUPPORTS_C22;
78
79 ecmd->advertising = ADVERTISED_TP | ADVERTISED_MII;
80
81 bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
82 bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);
83 if (mii->supports_gmii) {
84 ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
85 stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);
86 }
87 if (bmcr & BMCR_ANENABLE) {
88 ecmd->advertising |= ADVERTISED_Autoneg;
89 ecmd->autoneg = AUTONEG_ENABLE;
90
91 ecmd->advertising |= mii_get_an(mii, MII_ADVERTISE);
92 if (mii->supports_gmii)
93 ecmd->advertising |=
94 mii_ctrl1000_to_ethtool_adv_t(ctrl1000);
95
96 if (bmsr & BMSR_ANEGCOMPLETE) {
97 ecmd->lp_advertising = mii_get_an(mii, MII_LPA);
98 ecmd->lp_advertising |=
99 mii_stat1000_to_ethtool_lpa_t(stat1000);
100 } else {
101 ecmd->lp_advertising = 0;
102 }
103
104 nego = ecmd->advertising & ecmd->lp_advertising;
105
106 if (nego & (ADVERTISED_1000baseT_Full |
107 ADVERTISED_1000baseT_Half)) {
108 ethtool_cmd_speed_set(ecmd, SPEED_1000);
109 ecmd->duplex = !!(nego & ADVERTISED_1000baseT_Full);
110 } else if (nego & (ADVERTISED_100baseT_Full |
111 ADVERTISED_100baseT_Half)) {
112 ethtool_cmd_speed_set(ecmd, SPEED_100);
113 ecmd->duplex = !!(nego & ADVERTISED_100baseT_Full);
114 } else {
115 ethtool_cmd_speed_set(ecmd, SPEED_10);
116 ecmd->duplex = !!(nego & ADVERTISED_10baseT_Full);
117 }
118 } else {
119 ecmd->autoneg = AUTONEG_DISABLE;
120
121 ethtool_cmd_speed_set(ecmd,
122 ((bmcr & BMCR_SPEED1000 &&
123 (bmcr & BMCR_SPEED100) == 0) ?
124 SPEED_1000 :
125 ((bmcr & BMCR_SPEED100) ?
126 SPEED_100 : SPEED_10)));
127 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
128 }
129
130 mii->full_duplex = ecmd->duplex;
131
132
133
134 return 0;
135}
136
137
138
139
140
141
142
143
144int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
145{
146 struct net_device *dev = mii->dev;
147 u32 speed = ethtool_cmd_speed(ecmd);
148
149 if (speed != SPEED_10 &&
150 speed != SPEED_100 &&
151 speed != SPEED_1000)
152 return -EINVAL;
153 if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
154 return -EINVAL;
155 if (ecmd->port != PORT_MII)
156 return -EINVAL;
157 if (ecmd->transceiver != XCVR_INTERNAL)
158 return -EINVAL;
159 if (ecmd->phy_address != mii->phy_id)
160 return -EINVAL;
161 if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE)
162 return -EINVAL;
163 if ((speed == SPEED_1000) && (!mii->supports_gmii))
164 return -EINVAL;
165
166
167
168 if (ecmd->autoneg == AUTONEG_ENABLE) {
169 u32 bmcr, advert, tmp;
170 u32 advert2 = 0, tmp2 = 0;
171
172 if ((ecmd->advertising & (ADVERTISED_10baseT_Half |
173 ADVERTISED_10baseT_Full |
174 ADVERTISED_100baseT_Half |
175 ADVERTISED_100baseT_Full |
176 ADVERTISED_1000baseT_Half |
177 ADVERTISED_1000baseT_Full)) == 0)
178 return -EINVAL;
179
180
181 advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);
182 tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
183 if (mii->supports_gmii) {
184 advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
185 tmp2 = advert2 & ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
186 }
187 tmp |= ethtool_adv_to_mii_adv_t(ecmd->advertising);
188
189 if (mii->supports_gmii)
190 tmp2 |=
191 ethtool_adv_to_mii_ctrl1000_t(ecmd->advertising);
192 if (advert != tmp) {
193 mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);
194 mii->advertising = tmp;
195 }
196 if ((mii->supports_gmii) && (advert2 != tmp2))
197 mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2);
198
199
200 bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
201 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
202 mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr);
203
204 mii->force_media = 0;
205 } else {
206 u32 bmcr, tmp;
207
208
209 bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
210 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
211 BMCR_SPEED1000 | BMCR_FULLDPLX);
212 if (speed == SPEED_1000)
213 tmp |= BMCR_SPEED1000;
214 else if (speed == SPEED_100)
215 tmp |= BMCR_SPEED100;
216 if (ecmd->duplex == DUPLEX_FULL) {
217 tmp |= BMCR_FULLDPLX;
218 mii->full_duplex = 1;
219 } else
220 mii->full_duplex = 0;
221 if (bmcr != tmp)
222 mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp);
223
224 mii->force_media = 1;
225 }
226 return 0;
227}
228
229
230
231
232
233int mii_check_gmii_support(struct mii_if_info *mii)
234{
235 int reg;
236
237 reg = mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);
238 if (reg & BMSR_ESTATEN) {
239 reg = mii->mdio_read(mii->dev, mii->phy_id, MII_ESTATUS);
240 if (reg & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF))
241 return 1;
242 }
243
244 return 0;
245}
246
247
248
249
250
251
252
253int mii_link_ok (struct mii_if_info *mii)
254{
255
256 mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR);
257 if (mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR) & BMSR_LSTATUS)
258 return 1;
259 return 0;
260}
261
262
263
264
265
266
267
268int mii_nway_restart (struct mii_if_info *mii)
269{
270 int bmcr;
271 int r = -EINVAL;
272
273
274 bmcr = mii->mdio_read(mii->dev, mii->phy_id, MII_BMCR);
275
276 if (bmcr & BMCR_ANENABLE) {
277 bmcr |= BMCR_ANRESTART;
278 mii->mdio_write(mii->dev, mii->phy_id, MII_BMCR, bmcr);
279 r = 0;
280 }
281
282 return r;
283}
284
285
286
287
288
289
290
291
292
293void mii_check_link (struct mii_if_info *mii)
294{
295 int cur_link = mii_link_ok(mii);
296 int prev_link = netif_carrier_ok(mii->dev);
297
298 if (cur_link && !prev_link)
299 netif_carrier_on(mii->dev);
300 else if (prev_link && !cur_link)
301 netif_carrier_off(mii->dev);
302}
303
304
305
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307
308
309
310
311
312
313unsigned int mii_check_media (struct mii_if_info *mii,
314 unsigned int ok_to_print,
315 unsigned int init_media)
316{
317 unsigned int old_carrier, new_carrier;
318 int advertise, lpa, media, duplex;
319 int lpa2 = 0;
320
321
322 if (mii->force_media)
323 return 0;
324
325
326 old_carrier = netif_carrier_ok(mii->dev) ? 1 : 0;
327 new_carrier = (unsigned int) mii_link_ok(mii);
328
329
330
331
332 if ((!init_media) && (old_carrier == new_carrier))
333 return 0;
334
335
336 if (!new_carrier) {
337 netif_carrier_off(mii->dev);
338 if (ok_to_print)
339 netdev_info(mii->dev, "link down\n");
340 return 0;
341 }
342
343
344
345
346 netif_carrier_on(mii->dev);
347
348
349 if ((!init_media) && (mii->advertising))
350 advertise = mii->advertising;
351 else {
352 advertise = mii->mdio_read(mii->dev, mii->phy_id, MII_ADVERTISE);
353 mii->advertising = advertise;
354 }
355 lpa = mii->mdio_read(mii->dev, mii->phy_id, MII_LPA);
356 if (mii->supports_gmii)
357 lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000);
358
359
360 media = mii_nway_result(lpa & advertise);
361 duplex = (media & ADVERTISE_FULL) ? 1 : 0;
362 if (lpa2 & LPA_1000FULL)
363 duplex = 1;
364
365 if (ok_to_print)
366 netdev_info(mii->dev, "link up, %uMbps, %s-duplex, lpa 0x%04X\n",
367 lpa2 & (LPA_1000FULL | LPA_1000HALF) ? 1000 :
368 media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ?
369 100 : 10,
370 duplex ? "full" : "half",
371 lpa);
372
373 if ((init_media) || (mii->full_duplex != duplex)) {
374 mii->full_duplex = duplex;
375 return 1;
376 }
377
378 return 0;
379}
380
381
382
383
384
385
386
387
388
389
390
391int generic_mii_ioctl(struct mii_if_info *mii_if,
392 struct mii_ioctl_data *mii_data, int cmd,
393 unsigned int *duplex_chg_out)
394{
395 int rc = 0;
396 unsigned int duplex_changed = 0;
397
398 if (duplex_chg_out)
399 *duplex_chg_out = 0;
400
401 mii_data->phy_id &= mii_if->phy_id_mask;
402 mii_data->reg_num &= mii_if->reg_num_mask;
403
404 switch(cmd) {
405 case SIOCGMIIPHY:
406 mii_data->phy_id = mii_if->phy_id;
407
408
409 case SIOCGMIIREG:
410 mii_data->val_out =
411 mii_if->mdio_read(mii_if->dev, mii_data->phy_id,
412 mii_data->reg_num);
413 break;
414
415 case SIOCSMIIREG: {
416 u16 val = mii_data->val_in;
417
418 if (mii_data->phy_id == mii_if->phy_id) {
419 switch(mii_data->reg_num) {
420 case MII_BMCR: {
421 unsigned int new_duplex = 0;
422 if (val & (BMCR_RESET|BMCR_ANENABLE))
423 mii_if->force_media = 0;
424 else
425 mii_if->force_media = 1;
426 if (mii_if->force_media &&
427 (val & BMCR_FULLDPLX))
428 new_duplex = 1;
429 if (mii_if->full_duplex != new_duplex) {
430 duplex_changed = 1;
431 mii_if->full_duplex = new_duplex;
432 }
433 break;
434 }
435 case MII_ADVERTISE:
436 mii_if->advertising = val;
437 break;
438 default:
439
440 break;
441 }
442 }
443
444 mii_if->mdio_write(mii_if->dev, mii_data->phy_id,
445 mii_data->reg_num, val);
446 break;
447 }
448
449 default:
450 rc = -EOPNOTSUPP;
451 break;
452 }
453
454 if ((rc == 0) && (duplex_chg_out) && (duplex_changed))
455 *duplex_chg_out = 1;
456
457 return rc;
458}
459
460MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
461MODULE_DESCRIPTION ("MII hardware support library");
462MODULE_LICENSE("GPL");
463
464EXPORT_SYMBOL(mii_link_ok);
465EXPORT_SYMBOL(mii_nway_restart);
466EXPORT_SYMBOL(mii_ethtool_gset);
467EXPORT_SYMBOL(mii_ethtool_sset);
468EXPORT_SYMBOL(mii_check_link);
469EXPORT_SYMBOL(mii_check_media);
470EXPORT_SYMBOL(mii_check_gmii_support);
471EXPORT_SYMBOL(generic_mii_ioctl);
472
473