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1da177e4 LT |
1 | /* |
2 | ||
3 | mii.c: MII interface library | |
4 | ||
5 | Maintained by Jeff Garzik <jgarzik@pobox.com> | |
6 | Copyright 2001,2002 Jeff Garzik | |
7 | ||
8 | Various code came from myson803.c and other files by | |
9 | Donald Becker. Copyright: | |
10 | ||
11 | Written 1998-2002 by Donald Becker. | |
12 | ||
13 | This software may be used and distributed according | |
14 | to the terms of the GNU General Public License (GPL), | |
15 | incorporated herein by reference. Drivers based on | |
16 | or derived from this code fall under the GPL and must | |
17 | retain the authorship, copyright and license notice. | |
18 | This file is not a complete program and may only be | |
19 | used when the entire operating system is licensed | |
20 | under the GPL. | |
21 | ||
22 | The author may be reached as becker@scyld.com, or C/O | |
23 | Scyld Computing Corporation | |
24 | 410 Severn Ave., Suite 210 | |
25 | Annapolis MD 21403 | |
26 | ||
27 | ||
28 | */ | |
29 | ||
30 | #include <linux/kernel.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/ethtool.h> | |
9c4df53b | 34 | #include <linux/mii.h> |
5974700c BH |
35 | |
36 | static u32 mii_get_an(struct mii_if_info *mii, u16 addr) | |
37 | { | |
5974700c BH |
38 | int advert; |
39 | ||
40 | advert = mii->mdio_read(mii->dev, mii->phy_id, addr); | |
28011cf1 | 41 | |
37f07023 | 42 | return mii_lpa_to_ethtool_lpa_t(advert); |
5974700c | 43 | } |
1da177e4 | 44 | |
32684ec6 RD |
45 | /** |
46 | * mii_ethtool_gset - get settings that are specified in @ecmd | |
47 | * @mii: MII interface | |
48 | * @ecmd: requested ethtool_cmd | |
49 | * | |
8ae6daca DD |
50 | * The @ecmd parameter is expected to have been cleared before calling |
51 | * mii_ethtool_gset(). | |
52 | * | |
32684ec6 RD |
53 | * Returns 0 for success, negative on error. |
54 | */ | |
1da177e4 LT |
55 | int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd) |
56 | { | |
57 | struct net_device *dev = mii->dev; | |
5974700c BH |
58 | u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0; |
59 | u32 nego; | |
1da177e4 LT |
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 | /* only supports twisted-pair */ | |
70 | ecmd->port = PORT_MII; | |
71 | ||
72 | /* only supports internal transceiver */ | |
73 | ecmd->transceiver = XCVR_INTERNAL; | |
74 | ||
75 | /* this isn't fully supported at higher layers */ | |
76 | ecmd->phy_address = mii->phy_id; | |
9c4df53b | 77 | ecmd->mdio_support = ETH_MDIO_SUPPORTS_C22; |
1da177e4 LT |
78 | |
79 | ecmd->advertising = ADVERTISED_TP | ADVERTISED_MII; | |
1da177e4 LT |
80 | |
81 | bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR); | |
5974700c | 82 | bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR); |
1da177e4 | 83 | if (mii->supports_gmii) { |
5974700c BH |
84 | ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000); |
85 | stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000); | |
1da177e4 LT |
86 | } |
87 | if (bmcr & BMCR_ANENABLE) { | |
88 | ecmd->advertising |= ADVERTISED_Autoneg; | |
89 | ecmd->autoneg = AUTONEG_ENABLE; | |
6aa20a22 | 90 | |
5974700c | 91 | ecmd->advertising |= mii_get_an(mii, MII_ADVERTISE); |
28011cf1 | 92 | if (mii->supports_gmii) |
37f07023 MC |
93 | ecmd->advertising |= |
94 | mii_ctrl1000_to_ethtool_adv_t(ctrl1000); | |
5974700c BH |
95 | |
96 | if (bmsr & BMSR_ANEGCOMPLETE) { | |
97 | ecmd->lp_advertising = mii_get_an(mii, MII_LPA); | |
28011cf1 | 98 | ecmd->lp_advertising |= |
37f07023 | 99 | mii_stat1000_to_ethtool_lpa_t(stat1000); |
5974700c BH |
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)) { | |
70739497 | 108 | ethtool_cmd_speed_set(ecmd, SPEED_1000); |
5974700c BH |
109 | ecmd->duplex = !!(nego & ADVERTISED_1000baseT_Full); |
110 | } else if (nego & (ADVERTISED_100baseT_Full | | |
111 | ADVERTISED_100baseT_Half)) { | |
70739497 | 112 | ethtool_cmd_speed_set(ecmd, SPEED_100); |
5974700c | 113 | ecmd->duplex = !!(nego & ADVERTISED_100baseT_Full); |
1da177e4 | 114 | } else { |
70739497 | 115 | ethtool_cmd_speed_set(ecmd, SPEED_10); |
5974700c | 116 | ecmd->duplex = !!(nego & ADVERTISED_10baseT_Full); |
1da177e4 LT |
117 | } |
118 | } else { | |
119 | ecmd->autoneg = AUTONEG_DISABLE; | |
120 | ||
70739497 DD |
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))); | |
1da177e4 LT |
127 | ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF; |
128 | } | |
129 | ||
5974700c BH |
130 | mii->full_duplex = ecmd->duplex; |
131 | ||
1da177e4 LT |
132 | /* ignore maxtxpkt, maxrxpkt for now */ |
133 | ||
134 | return 0; | |
135 | } | |
136 | ||
bc8ee596 PR |
137 | /** |
138 | * mii_ethtool_get_link_ksettings - get settings that are specified in @cmd | |
139 | * @mii: MII interface | |
140 | * @cmd: requested ethtool_link_ksettings | |
141 | * | |
142 | * The @cmd parameter is expected to have been cleared before calling | |
143 | * mii_ethtool_get_link_ksettings(). | |
bc8ee596 | 144 | */ |
82c01a84 | 145 | void mii_ethtool_get_link_ksettings(struct mii_if_info *mii, |
146 | struct ethtool_link_ksettings *cmd) | |
bc8ee596 PR |
147 | { |
148 | struct net_device *dev = mii->dev; | |
149 | u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0; | |
150 | u32 nego, supported, advertising, lp_advertising; | |
151 | ||
152 | supported = (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | | |
153 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | | |
154 | SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII); | |
155 | if (mii->supports_gmii) | |
156 | supported |= SUPPORTED_1000baseT_Half | | |
157 | SUPPORTED_1000baseT_Full; | |
158 | ||
159 | /* only supports twisted-pair */ | |
160 | cmd->base.port = PORT_MII; | |
161 | ||
162 | /* this isn't fully supported at higher layers */ | |
163 | cmd->base.phy_address = mii->phy_id; | |
164 | cmd->base.mdio_support = ETH_MDIO_SUPPORTS_C22; | |
165 | ||
166 | advertising = ADVERTISED_TP | ADVERTISED_MII; | |
167 | ||
168 | bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR); | |
169 | bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR); | |
170 | if (mii->supports_gmii) { | |
171 | ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000); | |
172 | stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000); | |
173 | } | |
174 | if (bmcr & BMCR_ANENABLE) { | |
175 | advertising |= ADVERTISED_Autoneg; | |
176 | cmd->base.autoneg = AUTONEG_ENABLE; | |
177 | ||
178 | advertising |= mii_get_an(mii, MII_ADVERTISE); | |
179 | if (mii->supports_gmii) | |
180 | advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000); | |
181 | ||
182 | if (bmsr & BMSR_ANEGCOMPLETE) { | |
183 | lp_advertising = mii_get_an(mii, MII_LPA); | |
184 | lp_advertising |= | |
185 | mii_stat1000_to_ethtool_lpa_t(stat1000); | |
186 | } else { | |
187 | lp_advertising = 0; | |
188 | } | |
189 | ||
190 | nego = advertising & lp_advertising; | |
191 | ||
192 | if (nego & (ADVERTISED_1000baseT_Full | | |
193 | ADVERTISED_1000baseT_Half)) { | |
194 | cmd->base.speed = SPEED_1000; | |
195 | cmd->base.duplex = !!(nego & ADVERTISED_1000baseT_Full); | |
196 | } else if (nego & (ADVERTISED_100baseT_Full | | |
197 | ADVERTISED_100baseT_Half)) { | |
198 | cmd->base.speed = SPEED_100; | |
199 | cmd->base.duplex = !!(nego & ADVERTISED_100baseT_Full); | |
200 | } else { | |
201 | cmd->base.speed = SPEED_10; | |
202 | cmd->base.duplex = !!(nego & ADVERTISED_10baseT_Full); | |
203 | } | |
204 | } else { | |
205 | cmd->base.autoneg = AUTONEG_DISABLE; | |
206 | ||
207 | cmd->base.speed = ((bmcr & BMCR_SPEED1000 && | |
208 | (bmcr & BMCR_SPEED100) == 0) ? | |
209 | SPEED_1000 : | |
210 | ((bmcr & BMCR_SPEED100) ? | |
211 | SPEED_100 : SPEED_10)); | |
212 | cmd->base.duplex = (bmcr & BMCR_FULLDPLX) ? | |
213 | DUPLEX_FULL : DUPLEX_HALF; | |
dc0b2c9c AB |
214 | |
215 | lp_advertising = 0; | |
bc8ee596 PR |
216 | } |
217 | ||
218 | mii->full_duplex = cmd->base.duplex; | |
219 | ||
220 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, | |
221 | supported); | |
222 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, | |
223 | advertising); | |
224 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising, | |
225 | lp_advertising); | |
226 | ||
227 | /* ignore maxtxpkt, maxrxpkt for now */ | |
bc8ee596 PR |
228 | } |
229 | ||
32684ec6 RD |
230 | /** |
231 | * mii_ethtool_sset - set settings that are specified in @ecmd | |
232 | * @mii: MII interface | |
233 | * @ecmd: requested ethtool_cmd | |
234 | * | |
235 | * Returns 0 for success, negative on error. | |
236 | */ | |
1da177e4 LT |
237 | int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd) |
238 | { | |
239 | struct net_device *dev = mii->dev; | |
25db0338 | 240 | u32 speed = ethtool_cmd_speed(ecmd); |
1da177e4 | 241 | |
25db0338 DD |
242 | if (speed != SPEED_10 && |
243 | speed != SPEED_100 && | |
244 | speed != SPEED_1000) | |
1da177e4 LT |
245 | return -EINVAL; |
246 | if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL) | |
247 | return -EINVAL; | |
248 | if (ecmd->port != PORT_MII) | |
249 | return -EINVAL; | |
250 | if (ecmd->transceiver != XCVR_INTERNAL) | |
251 | return -EINVAL; | |
252 | if (ecmd->phy_address != mii->phy_id) | |
253 | return -EINVAL; | |
254 | if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE) | |
255 | return -EINVAL; | |
25db0338 | 256 | if ((speed == SPEED_1000) && (!mii->supports_gmii)) |
1da177e4 | 257 | return -EINVAL; |
6aa20a22 | 258 | |
1da177e4 | 259 | /* ignore supported, maxtxpkt, maxrxpkt */ |
6aa20a22 | 260 | |
1da177e4 LT |
261 | if (ecmd->autoneg == AUTONEG_ENABLE) { |
262 | u32 bmcr, advert, tmp; | |
263 | u32 advert2 = 0, tmp2 = 0; | |
264 | ||
265 | if ((ecmd->advertising & (ADVERTISED_10baseT_Half | | |
266 | ADVERTISED_10baseT_Full | | |
267 | ADVERTISED_100baseT_Half | | |
268 | ADVERTISED_100baseT_Full | | |
269 | ADVERTISED_1000baseT_Half | | |
270 | ADVERTISED_1000baseT_Full)) == 0) | |
271 | return -EINVAL; | |
272 | ||
273 | /* advertise only what has been requested */ | |
274 | advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE); | |
275 | tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4); | |
276 | if (mii->supports_gmii) { | |
277 | advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000); | |
278 | tmp2 = advert2 & ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL); | |
279 | } | |
37f07023 | 280 | tmp |= ethtool_adv_to_mii_adv_t(ecmd->advertising); |
28011cf1 MC |
281 | |
282 | if (mii->supports_gmii) | |
37f07023 MC |
283 | tmp2 |= |
284 | ethtool_adv_to_mii_ctrl1000_t(ecmd->advertising); | |
1da177e4 LT |
285 | if (advert != tmp) { |
286 | mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp); | |
287 | mii->advertising = tmp; | |
288 | } | |
289 | if ((mii->supports_gmii) && (advert2 != tmp2)) | |
290 | mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2); | |
6aa20a22 | 291 | |
1da177e4 LT |
292 | /* turn on autonegotiation, and force a renegotiate */ |
293 | bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR); | |
294 | bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART); | |
295 | mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr); | |
296 | ||
297 | mii->force_media = 0; | |
298 | } else { | |
299 | u32 bmcr, tmp; | |
300 | ||
301 | /* turn off auto negotiation, set speed and duplexity */ | |
302 | bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR); | |
6aa20a22 | 303 | tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | |
1da177e4 | 304 | BMCR_SPEED1000 | BMCR_FULLDPLX); |
25db0338 | 305 | if (speed == SPEED_1000) |
1da177e4 | 306 | tmp |= BMCR_SPEED1000; |
25db0338 | 307 | else if (speed == SPEED_100) |
1da177e4 LT |
308 | tmp |= BMCR_SPEED100; |
309 | if (ecmd->duplex == DUPLEX_FULL) { | |
310 | tmp |= BMCR_FULLDPLX; | |
311 | mii->full_duplex = 1; | |
312 | } else | |
313 | mii->full_duplex = 0; | |
314 | if (bmcr != tmp) | |
315 | mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp); | |
316 | ||
317 | mii->force_media = 1; | |
318 | } | |
319 | return 0; | |
320 | } | |
321 | ||
bc8ee596 PR |
322 | /** |
323 | * mii_ethtool_set_link_ksettings - set settings that are specified in @cmd | |
324 | * @mii: MII interfaces | |
325 | * @cmd: requested ethtool_link_ksettings | |
326 | * | |
327 | * Returns 0 for success, negative on error. | |
328 | */ | |
329 | int mii_ethtool_set_link_ksettings(struct mii_if_info *mii, | |
330 | const struct ethtool_link_ksettings *cmd) | |
331 | { | |
332 | struct net_device *dev = mii->dev; | |
333 | u32 speed = cmd->base.speed; | |
334 | ||
335 | if (speed != SPEED_10 && | |
336 | speed != SPEED_100 && | |
337 | speed != SPEED_1000) | |
338 | return -EINVAL; | |
339 | if (cmd->base.duplex != DUPLEX_HALF && cmd->base.duplex != DUPLEX_FULL) | |
340 | return -EINVAL; | |
341 | if (cmd->base.port != PORT_MII) | |
342 | return -EINVAL; | |
343 | if (cmd->base.phy_address != mii->phy_id) | |
344 | return -EINVAL; | |
345 | if (cmd->base.autoneg != AUTONEG_DISABLE && | |
346 | cmd->base.autoneg != AUTONEG_ENABLE) | |
347 | return -EINVAL; | |
348 | if ((speed == SPEED_1000) && (!mii->supports_gmii)) | |
349 | return -EINVAL; | |
350 | ||
351 | /* ignore supported, maxtxpkt, maxrxpkt */ | |
352 | ||
353 | if (cmd->base.autoneg == AUTONEG_ENABLE) { | |
354 | u32 bmcr, advert, tmp; | |
355 | u32 advert2 = 0, tmp2 = 0; | |
356 | u32 advertising; | |
357 | ||
358 | ethtool_convert_link_mode_to_legacy_u32( | |
359 | &advertising, cmd->link_modes.advertising); | |
360 | ||
361 | if ((advertising & (ADVERTISED_10baseT_Half | | |
362 | ADVERTISED_10baseT_Full | | |
363 | ADVERTISED_100baseT_Half | | |
364 | ADVERTISED_100baseT_Full | | |
365 | ADVERTISED_1000baseT_Half | | |
366 | ADVERTISED_1000baseT_Full)) == 0) | |
367 | return -EINVAL; | |
368 | ||
369 | /* advertise only what has been requested */ | |
370 | advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE); | |
371 | tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4); | |
372 | if (mii->supports_gmii) { | |
373 | advert2 = mii->mdio_read(dev, mii->phy_id, | |
374 | MII_CTRL1000); | |
375 | tmp2 = advert2 & | |
376 | ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL); | |
377 | } | |
378 | tmp |= ethtool_adv_to_mii_adv_t(advertising); | |
379 | ||
380 | if (mii->supports_gmii) | |
381 | tmp2 |= ethtool_adv_to_mii_ctrl1000_t(advertising); | |
382 | if (advert != tmp) { | |
383 | mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp); | |
384 | mii->advertising = tmp; | |
385 | } | |
386 | if ((mii->supports_gmii) && (advert2 != tmp2)) | |
387 | mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2); | |
388 | ||
389 | /* turn on autonegotiation, and force a renegotiate */ | |
390 | bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR); | |
391 | bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART); | |
392 | mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr); | |
393 | ||
394 | mii->force_media = 0; | |
395 | } else { | |
396 | u32 bmcr, tmp; | |
397 | ||
398 | /* turn off auto negotiation, set speed and duplexity */ | |
399 | bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR); | |
400 | tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | | |
401 | BMCR_SPEED1000 | BMCR_FULLDPLX); | |
402 | if (speed == SPEED_1000) | |
403 | tmp |= BMCR_SPEED1000; | |
404 | else if (speed == SPEED_100) | |
405 | tmp |= BMCR_SPEED100; | |
406 | if (cmd->base.duplex == DUPLEX_FULL) { | |
407 | tmp |= BMCR_FULLDPLX; | |
408 | mii->full_duplex = 1; | |
409 | } else { | |
410 | mii->full_duplex = 0; | |
411 | } | |
412 | if (bmcr != tmp) | |
413 | mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp); | |
414 | ||
415 | mii->force_media = 1; | |
416 | } | |
417 | return 0; | |
418 | } | |
419 | ||
32684ec6 RD |
420 | /** |
421 | * mii_check_gmii_support - check if the MII supports Gb interfaces | |
422 | * @mii: the MII interface | |
423 | */ | |
43ec6e95 DF |
424 | int mii_check_gmii_support(struct mii_if_info *mii) |
425 | { | |
426 | int reg; | |
427 | ||
428 | reg = mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR); | |
429 | if (reg & BMSR_ESTATEN) { | |
430 | reg = mii->mdio_read(mii->dev, mii->phy_id, MII_ESTATUS); | |
431 | if (reg & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) | |
432 | return 1; | |
433 | } | |
434 | ||
435 | return 0; | |
436 | } | |
437 | ||
32684ec6 RD |
438 | /** |
439 | * mii_link_ok - is link status up/ok | |
440 | * @mii: the MII interface | |
441 | * | |
442 | * Returns 1 if the MII reports link status up/ok, 0 otherwise. | |
443 | */ | |
1da177e4 LT |
444 | int mii_link_ok (struct mii_if_info *mii) |
445 | { | |
446 | /* first, a dummy read, needed to latch some MII phys */ | |
447 | mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR); | |
448 | if (mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR) & BMSR_LSTATUS) | |
449 | return 1; | |
450 | return 0; | |
451 | } | |
452 | ||
32684ec6 RD |
453 | /** |
454 | * mii_nway_restart - restart NWay (autonegotiation) for this interface | |
455 | * @mii: the MII interface | |
456 | * | |
457 | * Returns 0 on success, negative on error. | |
458 | */ | |
1da177e4 LT |
459 | int mii_nway_restart (struct mii_if_info *mii) |
460 | { | |
461 | int bmcr; | |
462 | int r = -EINVAL; | |
463 | ||
464 | /* if autoneg is off, it's an error */ | |
465 | bmcr = mii->mdio_read(mii->dev, mii->phy_id, MII_BMCR); | |
466 | ||
467 | if (bmcr & BMCR_ANENABLE) { | |
468 | bmcr |= BMCR_ANRESTART; | |
469 | mii->mdio_write(mii->dev, mii->phy_id, MII_BMCR, bmcr); | |
470 | r = 0; | |
471 | } | |
472 | ||
473 | return r; | |
474 | } | |
475 | ||
32684ec6 RD |
476 | /** |
477 | * mii_check_link - check MII link status | |
478 | * @mii: MII interface | |
479 | * | |
480 | * If the link status changed (previous != current), call | |
481 | * netif_carrier_on() if current link status is Up or call | |
482 | * netif_carrier_off() if current link status is Down. | |
483 | */ | |
1da177e4 LT |
484 | void mii_check_link (struct mii_if_info *mii) |
485 | { | |
486 | int cur_link = mii_link_ok(mii); | |
487 | int prev_link = netif_carrier_ok(mii->dev); | |
488 | ||
489 | if (cur_link && !prev_link) | |
490 | netif_carrier_on(mii->dev); | |
491 | else if (prev_link && !cur_link) | |
492 | netif_carrier_off(mii->dev); | |
493 | } | |
494 | ||
32684ec6 | 495 | /** |
5bdc7380 | 496 | * mii_check_media - check the MII interface for a carrier/speed/duplex change |
32684ec6 RD |
497 | * @mii: the MII interface |
498 | * @ok_to_print: OK to print link up/down messages | |
499 | * @init_media: OK to save duplex mode in @mii | |
500 | * | |
501 | * Returns 1 if the duplex mode changed, 0 if not. | |
502 | * If the media type is forced, always returns 0. | |
503 | */ | |
1da177e4 LT |
504 | unsigned int mii_check_media (struct mii_if_info *mii, |
505 | unsigned int ok_to_print, | |
506 | unsigned int init_media) | |
507 | { | |
508 | unsigned int old_carrier, new_carrier; | |
509 | int advertise, lpa, media, duplex; | |
510 | int lpa2 = 0; | |
511 | ||
1da177e4 LT |
512 | /* check current and old link status */ |
513 | old_carrier = netif_carrier_ok(mii->dev) ? 1 : 0; | |
514 | new_carrier = (unsigned int) mii_link_ok(mii); | |
515 | ||
516 | /* if carrier state did not change, this is a "bounce", | |
517 | * just exit as everything is already set correctly | |
518 | */ | |
519 | if ((!init_media) && (old_carrier == new_carrier)) | |
520 | return 0; /* duplex did not change */ | |
521 | ||
522 | /* no carrier, nothing much to do */ | |
523 | if (!new_carrier) { | |
524 | netif_carrier_off(mii->dev); | |
525 | if (ok_to_print) | |
967faf3b | 526 | netdev_info(mii->dev, "link down\n"); |
1da177e4 LT |
527 | return 0; /* duplex did not change */ |
528 | } | |
529 | ||
530 | /* | |
531 | * we have carrier, see who's on the other end | |
532 | */ | |
533 | netif_carrier_on(mii->dev); | |
534 | ||
5bdc7380 BH |
535 | if (mii->force_media) { |
536 | if (ok_to_print) | |
537 | netdev_info(mii->dev, "link up\n"); | |
538 | return 0; /* duplex did not change */ | |
539 | } | |
540 | ||
1da177e4 LT |
541 | /* get MII advertise and LPA values */ |
542 | if ((!init_media) && (mii->advertising)) | |
543 | advertise = mii->advertising; | |
544 | else { | |
545 | advertise = mii->mdio_read(mii->dev, mii->phy_id, MII_ADVERTISE); | |
546 | mii->advertising = advertise; | |
547 | } | |
548 | lpa = mii->mdio_read(mii->dev, mii->phy_id, MII_LPA); | |
549 | if (mii->supports_gmii) | |
550 | lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000); | |
551 | ||
552 | /* figure out media and duplex from advertise and LPA values */ | |
553 | media = mii_nway_result(lpa & advertise); | |
554 | duplex = (media & ADVERTISE_FULL) ? 1 : 0; | |
555 | if (lpa2 & LPA_1000FULL) | |
556 | duplex = 1; | |
557 | ||
558 | if (ok_to_print) | |
967faf3b JP |
559 | netdev_info(mii->dev, "link up, %uMbps, %s-duplex, lpa 0x%04X\n", |
560 | lpa2 & (LPA_1000FULL | LPA_1000HALF) ? 1000 : | |
561 | media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ? | |
562 | 100 : 10, | |
563 | duplex ? "full" : "half", | |
564 | lpa); | |
1da177e4 LT |
565 | |
566 | if ((init_media) || (mii->full_duplex != duplex)) { | |
567 | mii->full_duplex = duplex; | |
568 | return 1; /* duplex changed */ | |
569 | } | |
570 | ||
571 | return 0; /* duplex did not change */ | |
572 | } | |
573 | ||
32684ec6 RD |
574 | /** |
575 | * generic_mii_ioctl - main MII ioctl interface | |
576 | * @mii_if: the MII interface | |
577 | * @mii_data: MII ioctl data structure | |
578 | * @cmd: MII ioctl command | |
579 | * @duplex_chg_out: pointer to @duplex_changed status if there was no | |
580 | * ioctl error | |
581 | * | |
582 | * Returns 0 on success, negative on error. | |
583 | */ | |
1da177e4 LT |
584 | int generic_mii_ioctl(struct mii_if_info *mii_if, |
585 | struct mii_ioctl_data *mii_data, int cmd, | |
586 | unsigned int *duplex_chg_out) | |
587 | { | |
588 | int rc = 0; | |
589 | unsigned int duplex_changed = 0; | |
590 | ||
591 | if (duplex_chg_out) | |
592 | *duplex_chg_out = 0; | |
593 | ||
594 | mii_data->phy_id &= mii_if->phy_id_mask; | |
595 | mii_data->reg_num &= mii_if->reg_num_mask; | |
596 | ||
597 | switch(cmd) { | |
598 | case SIOCGMIIPHY: | |
599 | mii_data->phy_id = mii_if->phy_id; | |
600 | /* fall through */ | |
601 | ||
602 | case SIOCGMIIREG: | |
603 | mii_data->val_out = | |
604 | mii_if->mdio_read(mii_if->dev, mii_data->phy_id, | |
605 | mii_data->reg_num); | |
606 | break; | |
607 | ||
608 | case SIOCSMIIREG: { | |
609 | u16 val = mii_data->val_in; | |
610 | ||
1da177e4 LT |
611 | if (mii_data->phy_id == mii_if->phy_id) { |
612 | switch(mii_data->reg_num) { | |
613 | case MII_BMCR: { | |
614 | unsigned int new_duplex = 0; | |
615 | if (val & (BMCR_RESET|BMCR_ANENABLE)) | |
616 | mii_if->force_media = 0; | |
617 | else | |
618 | mii_if->force_media = 1; | |
619 | if (mii_if->force_media && | |
620 | (val & BMCR_FULLDPLX)) | |
621 | new_duplex = 1; | |
622 | if (mii_if->full_duplex != new_duplex) { | |
623 | duplex_changed = 1; | |
624 | mii_if->full_duplex = new_duplex; | |
625 | } | |
626 | break; | |
627 | } | |
628 | case MII_ADVERTISE: | |
629 | mii_if->advertising = val; | |
630 | break; | |
631 | default: | |
632 | /* do nothing */ | |
633 | break; | |
634 | } | |
635 | } | |
636 | ||
637 | mii_if->mdio_write(mii_if->dev, mii_data->phy_id, | |
638 | mii_data->reg_num, val); | |
639 | break; | |
640 | } | |
641 | ||
642 | default: | |
643 | rc = -EOPNOTSUPP; | |
644 | break; | |
645 | } | |
646 | ||
647 | if ((rc == 0) && (duplex_chg_out) && (duplex_changed)) | |
648 | *duplex_chg_out = 1; | |
649 | ||
650 | return rc; | |
651 | } | |
652 | ||
653 | MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>"); | |
654 | MODULE_DESCRIPTION ("MII hardware support library"); | |
655 | MODULE_LICENSE("GPL"); | |
656 | ||
657 | EXPORT_SYMBOL(mii_link_ok); | |
658 | EXPORT_SYMBOL(mii_nway_restart); | |
659 | EXPORT_SYMBOL(mii_ethtool_gset); | |
bc8ee596 | 660 | EXPORT_SYMBOL(mii_ethtool_get_link_ksettings); |
1da177e4 | 661 | EXPORT_SYMBOL(mii_ethtool_sset); |
bc8ee596 | 662 | EXPORT_SYMBOL(mii_ethtool_set_link_ksettings); |
1da177e4 LT |
663 | EXPORT_SYMBOL(mii_check_link); |
664 | EXPORT_SYMBOL(mii_check_media); | |
43ec6e95 | 665 | EXPORT_SYMBOL(mii_check_gmii_support); |
1da177e4 LT |
666 | EXPORT_SYMBOL(generic_mii_ioctl); |
667 |