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2f53e904 | 1 | /* Framework for configuring and reading PHY devices |
00db8189 AF |
2 | * Based on code in sungem_phy.c and gianfar_phy.c |
3 | * | |
4 | * Author: Andy Fleming | |
5 | * | |
6 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
0ac49527 | 7 | * Copyright (c) 2006, 2007 Maciej W. Rozycki |
00db8189 AF |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | * | |
14 | */ | |
8d242488 JP |
15 | |
16 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
17 | ||
00db8189 | 18 | #include <linux/kernel.h> |
00db8189 AF |
19 | #include <linux/string.h> |
20 | #include <linux/errno.h> | |
21 | #include <linux/unistd.h> | |
00db8189 | 22 | #include <linux/interrupt.h> |
00db8189 AF |
23 | #include <linux/delay.h> |
24 | #include <linux/netdevice.h> | |
25 | #include <linux/etherdevice.h> | |
26 | #include <linux/skbuff.h> | |
00db8189 AF |
27 | #include <linux/mm.h> |
28 | #include <linux/module.h> | |
00db8189 AF |
29 | #include <linux/mii.h> |
30 | #include <linux/ethtool.h> | |
31 | #include <linux/phy.h> | |
d6f8cfa3 | 32 | #include <linux/phy_led_triggers.h> |
3c3070d7 MR |
33 | #include <linux/timer.h> |
34 | #include <linux/workqueue.h> | |
a59a4d19 | 35 | #include <linux/mdio.h> |
2f53e904 SS |
36 | #include <linux/io.h> |
37 | #include <linux/uaccess.h> | |
60063497 | 38 | #include <linux/atomic.h> |
2f53e904 | 39 | |
00db8189 | 40 | #include <asm/irq.h> |
00db8189 | 41 | |
766d1d38 FF |
42 | static const char *phy_speed_to_str(int speed) |
43 | { | |
44 | switch (speed) { | |
45 | case SPEED_10: | |
46 | return "10Mbps"; | |
47 | case SPEED_100: | |
48 | return "100Mbps"; | |
49 | case SPEED_1000: | |
50 | return "1Gbps"; | |
51 | case SPEED_2500: | |
52 | return "2.5Gbps"; | |
1f37b177 JP |
53 | case SPEED_5000: |
54 | return "5Gbps"; | |
766d1d38 FF |
55 | case SPEED_10000: |
56 | return "10Gbps"; | |
1f37b177 JP |
57 | case SPEED_20000: |
58 | return "20Gbps"; | |
59 | case SPEED_25000: | |
60 | return "25Gbps"; | |
61 | case SPEED_40000: | |
62 | return "40Gbps"; | |
63 | case SPEED_50000: | |
64 | return "50Gbps"; | |
65 | case SPEED_56000: | |
66 | return "56Gbps"; | |
67 | case SPEED_100000: | |
68 | return "100Gbps"; | |
766d1d38 FF |
69 | case SPEED_UNKNOWN: |
70 | return "Unknown"; | |
71 | default: | |
72 | return "Unsupported (update phy.c)"; | |
73 | } | |
74 | } | |
75 | ||
3e2186e0 FF |
76 | #define PHY_STATE_STR(_state) \ |
77 | case PHY_##_state: \ | |
78 | return __stringify(_state); \ | |
79 | ||
80 | static const char *phy_state_to_str(enum phy_state st) | |
81 | { | |
82 | switch (st) { | |
83 | PHY_STATE_STR(DOWN) | |
84 | PHY_STATE_STR(STARTING) | |
85 | PHY_STATE_STR(READY) | |
86 | PHY_STATE_STR(PENDING) | |
87 | PHY_STATE_STR(UP) | |
88 | PHY_STATE_STR(AN) | |
89 | PHY_STATE_STR(RUNNING) | |
90 | PHY_STATE_STR(NOLINK) | |
91 | PHY_STATE_STR(FORCING) | |
92 | PHY_STATE_STR(CHANGELINK) | |
93 | PHY_STATE_STR(HALTED) | |
94 | PHY_STATE_STR(RESUMING) | |
95 | } | |
96 | ||
97 | return NULL; | |
98 | } | |
99 | ||
100 | ||
b3df0da8 RD |
101 | /** |
102 | * phy_print_status - Convenience function to print out the current phy status | |
103 | * @phydev: the phy_device struct | |
e1393456 AF |
104 | */ |
105 | void phy_print_status(struct phy_device *phydev) | |
106 | { | |
2f53e904 | 107 | if (phydev->link) { |
df40cc88 | 108 | netdev_info(phydev->attached_dev, |
766d1d38 FF |
109 | "Link is Up - %s/%s - flow control %s\n", |
110 | phy_speed_to_str(phydev->speed), | |
df40cc88 FF |
111 | DUPLEX_FULL == phydev->duplex ? "Full" : "Half", |
112 | phydev->pause ? "rx/tx" : "off"); | |
2f53e904 | 113 | } else { |
43b6329f | 114 | netdev_info(phydev->attached_dev, "Link is Down\n"); |
2f53e904 | 115 | } |
e1393456 AF |
116 | } |
117 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 118 | |
b3df0da8 RD |
119 | /** |
120 | * phy_clear_interrupt - Ack the phy device's interrupt | |
121 | * @phydev: the phy_device struct | |
122 | * | |
123 | * If the @phydev driver has an ack_interrupt function, call it to | |
124 | * ack and clear the phy device's interrupt. | |
125 | * | |
ad033506 | 126 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 127 | */ |
89ff05ec | 128 | static int phy_clear_interrupt(struct phy_device *phydev) |
00db8189 | 129 | { |
00db8189 | 130 | if (phydev->drv->ack_interrupt) |
e62a768f | 131 | return phydev->drv->ack_interrupt(phydev); |
00db8189 | 132 | |
e62a768f | 133 | return 0; |
00db8189 AF |
134 | } |
135 | ||
b3df0da8 RD |
136 | /** |
137 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
138 | * @phydev: the phy_device struct | |
139 | * @interrupts: interrupt flags to configure for this @phydev | |
140 | * | |
ad033506 | 141 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 142 | */ |
89ff05ec | 143 | static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
00db8189 | 144 | { |
00db8189 AF |
145 | phydev->interrupts = interrupts; |
146 | if (phydev->drv->config_intr) | |
e62a768f | 147 | return phydev->drv->config_intr(phydev); |
00db8189 | 148 | |
e62a768f | 149 | return 0; |
00db8189 AF |
150 | } |
151 | ||
152 | ||
b3df0da8 RD |
153 | /** |
154 | * phy_aneg_done - return auto-negotiation status | |
155 | * @phydev: target phy_device struct | |
00db8189 | 156 | * |
76a423a3 FF |
157 | * Description: Return the auto-negotiation status from this @phydev |
158 | * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation | |
159 | * is still pending. | |
00db8189 | 160 | */ |
372788f9 | 161 | int phy_aneg_done(struct phy_device *phydev) |
00db8189 | 162 | { |
65f2767a | 163 | if (phydev->drv && phydev->drv->aneg_done) |
76a423a3 FF |
164 | return phydev->drv->aneg_done(phydev); |
165 | ||
a9fa6e6a | 166 | return genphy_aneg_done(phydev); |
00db8189 | 167 | } |
372788f9 | 168 | EXPORT_SYMBOL(phy_aneg_done); |
00db8189 | 169 | |
00db8189 | 170 | /* A structure for mapping a particular speed and duplex |
2f53e904 SS |
171 | * combination to a particular SUPPORTED and ADVERTISED value |
172 | */ | |
00db8189 AF |
173 | struct phy_setting { |
174 | int speed; | |
175 | int duplex; | |
176 | u32 setting; | |
177 | }; | |
178 | ||
d0613037 RK |
179 | /* A mapping of all SUPPORTED settings to speed/duplex. This table |
180 | * must be grouped by speed and sorted in descending match priority | |
181 | * - iow, descending speed. */ | |
f71e1309 | 182 | static const struct phy_setting settings[] = { |
00db8189 | 183 | { |
3e707706 LT |
184 | .speed = SPEED_10000, |
185 | .duplex = DUPLEX_FULL, | |
186 | .setting = SUPPORTED_10000baseKR_Full, | |
187 | }, | |
188 | { | |
189 | .speed = SPEED_10000, | |
190 | .duplex = DUPLEX_FULL, | |
191 | .setting = SUPPORTED_10000baseKX4_Full, | |
192 | }, | |
193 | { | |
194 | .speed = SPEED_10000, | |
00db8189 AF |
195 | .duplex = DUPLEX_FULL, |
196 | .setting = SUPPORTED_10000baseT_Full, | |
197 | }, | |
3e707706 LT |
198 | { |
199 | .speed = SPEED_2500, | |
200 | .duplex = DUPLEX_FULL, | |
201 | .setting = SUPPORTED_2500baseX_Full, | |
202 | }, | |
203 | { | |
204 | .speed = SPEED_1000, | |
205 | .duplex = DUPLEX_FULL, | |
206 | .setting = SUPPORTED_1000baseKX_Full, | |
207 | }, | |
00db8189 AF |
208 | { |
209 | .speed = SPEED_1000, | |
210 | .duplex = DUPLEX_FULL, | |
211 | .setting = SUPPORTED_1000baseT_Full, | |
212 | }, | |
213 | { | |
214 | .speed = SPEED_1000, | |
215 | .duplex = DUPLEX_HALF, | |
216 | .setting = SUPPORTED_1000baseT_Half, | |
217 | }, | |
218 | { | |
219 | .speed = SPEED_100, | |
220 | .duplex = DUPLEX_FULL, | |
221 | .setting = SUPPORTED_100baseT_Full, | |
222 | }, | |
223 | { | |
224 | .speed = SPEED_100, | |
225 | .duplex = DUPLEX_HALF, | |
226 | .setting = SUPPORTED_100baseT_Half, | |
227 | }, | |
228 | { | |
229 | .speed = SPEED_10, | |
230 | .duplex = DUPLEX_FULL, | |
231 | .setting = SUPPORTED_10baseT_Full, | |
232 | }, | |
233 | { | |
234 | .speed = SPEED_10, | |
235 | .duplex = DUPLEX_HALF, | |
236 | .setting = SUPPORTED_10baseT_Half, | |
237 | }, | |
238 | }; | |
239 | ||
b3df0da8 | 240 | /** |
d0613037 | 241 | * phy_lookup_setting - lookup a PHY setting |
b3df0da8 RD |
242 | * @speed: speed to match |
243 | * @duplex: duplex to match | |
d0613037 RK |
244 | * @feature: allowed link modes |
245 | * @exact: an exact match is required | |
246 | * | |
247 | * Search the settings array for a setting that matches the speed and | |
248 | * duplex, and which is supported. | |
00db8189 | 249 | * |
d0613037 RK |
250 | * If @exact is unset, either an exact match or %NULL for no match will |
251 | * be returned. | |
252 | * | |
253 | * If @exact is set, an exact match, the fastest supported setting at | |
254 | * or below the specified speed, the slowest supported setting, or if | |
255 | * they all fail, %NULL will be returned. | |
00db8189 | 256 | */ |
d0613037 RK |
257 | static const struct phy_setting * |
258 | phy_lookup_setting(int speed, int duplex, u32 features, bool exact) | |
00db8189 | 259 | { |
d0613037 RK |
260 | const struct phy_setting *p, *match = NULL, *last = NULL; |
261 | int i; | |
262 | ||
263 | for (i = 0, p = settings; i < ARRAY_SIZE(settings); i++, p++) { | |
264 | if (p->setting & features) { | |
265 | last = p; | |
266 | if (p->speed == speed && p->duplex == duplex) { | |
267 | /* Exact match for speed and duplex */ | |
268 | match = p; | |
269 | break; | |
270 | } else if (!exact) { | |
271 | if (!match && p->speed <= speed) | |
272 | /* Candidate */ | |
273 | match = p; | |
274 | ||
275 | if (p->speed < speed) | |
276 | break; | |
277 | } | |
278 | } | |
279 | } | |
00db8189 | 280 | |
d0613037 RK |
281 | if (!match && !exact) |
282 | match = last; | |
00db8189 | 283 | |
d0613037 | 284 | return match; |
00db8189 AF |
285 | } |
286 | ||
b3df0da8 | 287 | /** |
d0613037 RK |
288 | * phy_find_valid - find a PHY setting that matches the requested parameters |
289 | * @speed: desired speed | |
290 | * @duplex: desired duplex | |
291 | * @supported: mask of supported link modes | |
00db8189 | 292 | * |
d0613037 RK |
293 | * Locate a supported phy setting that is, in priority order: |
294 | * - an exact match for the specified speed and duplex mode | |
295 | * - a match for the specified speed, or slower speed | |
296 | * - the slowest supported speed | |
297 | * Returns the matched phy_setting entry, or %NULL if no supported phy | |
298 | * settings were found. | |
00db8189 | 299 | */ |
d0613037 RK |
300 | static const struct phy_setting * |
301 | phy_find_valid(int speed, int duplex, u32 supported) | |
00db8189 | 302 | { |
d0613037 | 303 | return phy_lookup_setting(speed, duplex, supported, false); |
00db8189 AF |
304 | } |
305 | ||
1f9127ca ZB |
306 | /** |
307 | * phy_supported_speeds - return all speeds currently supported by a phy device | |
308 | * @phy: The phy device to return supported speeds of. | |
309 | * @speeds: buffer to store supported speeds in. | |
310 | * @size: size of speeds buffer. | |
311 | * | |
312 | * Description: Returns the number of supported speeds, and fills the speeds | |
313 | * buffer with the supported speeds. If speeds buffer is too small to contain | |
314 | * all currently supported speeds, will return as many speeds as can fit. | |
315 | */ | |
316 | unsigned int phy_supported_speeds(struct phy_device *phy, | |
317 | unsigned int *speeds, | |
318 | unsigned int size) | |
319 | { | |
320 | unsigned int count = 0; | |
321 | unsigned int idx = 0; | |
322 | ||
786df9c2 | 323 | for (idx = 0; idx < ARRAY_SIZE(settings) && count < size; idx++) |
1f9127ca | 324 | /* Assumes settings are grouped by speed */ |
786df9c2 RK |
325 | if ((settings[idx].setting & phy->supported) && |
326 | (count == 0 || speeds[count - 1] != settings[idx].speed)) | |
327 | speeds[count++] = settings[idx].speed; | |
1f9127ca ZB |
328 | |
329 | return count; | |
330 | } | |
331 | ||
54da5a8b GR |
332 | /** |
333 | * phy_check_valid - check if there is a valid PHY setting which matches | |
334 | * speed, duplex, and feature mask | |
335 | * @speed: speed to match | |
336 | * @duplex: duplex to match | |
337 | * @features: A mask of the valid settings | |
338 | * | |
339 | * Description: Returns true if there is a valid setting, false otherwise. | |
340 | */ | |
341 | static inline bool phy_check_valid(int speed, int duplex, u32 features) | |
342 | { | |
d0613037 | 343 | return !!phy_lookup_setting(speed, duplex, features, true); |
54da5a8b GR |
344 | } |
345 | ||
b3df0da8 RD |
346 | /** |
347 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
348 | * @phydev: the target phy_device struct | |
00db8189 | 349 | * |
b3df0da8 | 350 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 351 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 352 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 353 | */ |
89ff05ec | 354 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 | 355 | { |
d0613037 | 356 | const struct phy_setting *setting; |
00db8189 | 357 | u32 features = phydev->supported; |
00db8189 AF |
358 | |
359 | /* Sanitize settings based on PHY capabilities */ | |
360 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 361 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 | 362 | |
d0613037 RK |
363 | setting = phy_find_valid(phydev->speed, phydev->duplex, features); |
364 | if (setting) { | |
365 | phydev->speed = setting->speed; | |
366 | phydev->duplex = setting->duplex; | |
367 | } else { | |
368 | /* We failed to find anything (no supported speeds?) */ | |
369 | phydev->speed = SPEED_UNKNOWN; | |
370 | phydev->duplex = DUPLEX_UNKNOWN; | |
371 | } | |
00db8189 | 372 | } |
00db8189 | 373 | |
b3df0da8 RD |
374 | /** |
375 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
376 | * @phydev: target phy_device struct | |
377 | * @cmd: ethtool_cmd | |
00db8189 AF |
378 | * |
379 | * A few notes about parameter checking: | |
380 | * - We don't set port or transceiver, so we don't care what they | |
381 | * were set to. | |
382 | * - phy_start_aneg() will make sure forced settings are sane, and | |
383 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 384 | * care if ethtool tries to give us bad values. |
00db8189 AF |
385 | */ |
386 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
387 | { | |
25db0338 DD |
388 | u32 speed = ethtool_cmd_speed(cmd); |
389 | ||
e5a03bfd | 390 | if (cmd->phy_address != phydev->mdio.addr) |
00db8189 AF |
391 | return -EINVAL; |
392 | ||
2f53e904 | 393 | /* We make sure that we don't pass unsupported values in to the PHY */ |
00db8189 AF |
394 | cmd->advertising &= phydev->supported; |
395 | ||
396 | /* Verify the settings we care about. */ | |
397 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
398 | return -EINVAL; | |
399 | ||
400 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
401 | return -EINVAL; | |
402 | ||
8e95a202 | 403 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
404 | ((speed != SPEED_1000 && |
405 | speed != SPEED_100 && | |
406 | speed != SPEED_10) || | |
8e95a202 JP |
407 | (cmd->duplex != DUPLEX_HALF && |
408 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
409 | return -EINVAL; |
410 | ||
411 | phydev->autoneg = cmd->autoneg; | |
412 | ||
25db0338 | 413 | phydev->speed = speed; |
00db8189 AF |
414 | |
415 | phydev->advertising = cmd->advertising; | |
416 | ||
417 | if (AUTONEG_ENABLE == cmd->autoneg) | |
418 | phydev->advertising |= ADVERTISED_Autoneg; | |
419 | else | |
420 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
421 | ||
422 | phydev->duplex = cmd->duplex; | |
423 | ||
1004ee61 | 424 | phydev->mdix_ctrl = cmd->eth_tp_mdix_ctrl; |
634ec36c | 425 | |
00db8189 AF |
426 | /* Restart the PHY */ |
427 | phy_start_aneg(phydev); | |
428 | ||
429 | return 0; | |
430 | } | |
9f6d55d0 | 431 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 | 432 | |
2d55173e PR |
433 | int phy_ethtool_ksettings_set(struct phy_device *phydev, |
434 | const struct ethtool_link_ksettings *cmd) | |
435 | { | |
436 | u8 autoneg = cmd->base.autoneg; | |
437 | u8 duplex = cmd->base.duplex; | |
438 | u32 speed = cmd->base.speed; | |
439 | u32 advertising; | |
440 | ||
441 | if (cmd->base.phy_address != phydev->mdio.addr) | |
442 | return -EINVAL; | |
443 | ||
444 | ethtool_convert_link_mode_to_legacy_u32(&advertising, | |
445 | cmd->link_modes.advertising); | |
446 | ||
447 | /* We make sure that we don't pass unsupported values in to the PHY */ | |
448 | advertising &= phydev->supported; | |
449 | ||
450 | /* Verify the settings we care about. */ | |
451 | if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) | |
452 | return -EINVAL; | |
453 | ||
454 | if (autoneg == AUTONEG_ENABLE && advertising == 0) | |
455 | return -EINVAL; | |
456 | ||
457 | if (autoneg == AUTONEG_DISABLE && | |
458 | ((speed != SPEED_1000 && | |
459 | speed != SPEED_100 && | |
460 | speed != SPEED_10) || | |
461 | (duplex != DUPLEX_HALF && | |
462 | duplex != DUPLEX_FULL))) | |
463 | return -EINVAL; | |
464 | ||
465 | phydev->autoneg = autoneg; | |
466 | ||
467 | phydev->speed = speed; | |
468 | ||
469 | phydev->advertising = advertising; | |
470 | ||
471 | if (autoneg == AUTONEG_ENABLE) | |
472 | phydev->advertising |= ADVERTISED_Autoneg; | |
473 | else | |
474 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
475 | ||
476 | phydev->duplex = duplex; | |
477 | ||
1004ee61 | 478 | phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; |
2d55173e PR |
479 | |
480 | /* Restart the PHY */ | |
481 | phy_start_aneg(phydev); | |
482 | ||
483 | return 0; | |
484 | } | |
485 | EXPORT_SYMBOL(phy_ethtool_ksettings_set); | |
486 | ||
2d55173e PR |
487 | int phy_ethtool_ksettings_get(struct phy_device *phydev, |
488 | struct ethtool_link_ksettings *cmd) | |
489 | { | |
490 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, | |
491 | phydev->supported); | |
492 | ||
493 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, | |
494 | phydev->advertising); | |
495 | ||
496 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising, | |
497 | phydev->lp_advertising); | |
498 | ||
499 | cmd->base.speed = phydev->speed; | |
500 | cmd->base.duplex = phydev->duplex; | |
501 | if (phydev->interface == PHY_INTERFACE_MODE_MOCA) | |
502 | cmd->base.port = PORT_BNC; | |
503 | else | |
504 | cmd->base.port = PORT_MII; | |
505 | ||
506 | cmd->base.phy_address = phydev->mdio.addr; | |
507 | cmd->base.autoneg = phydev->autoneg; | |
1004ee61 RL |
508 | cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; |
509 | cmd->base.eth_tp_mdix = phydev->mdix; | |
2d55173e PR |
510 | |
511 | return 0; | |
512 | } | |
513 | EXPORT_SYMBOL(phy_ethtool_ksettings_get); | |
00db8189 | 514 | |
b3df0da8 RD |
515 | /** |
516 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
517 | * @phydev: the phy_device struct | |
00c7d920 | 518 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
519 | * @cmd: ioctl cmd to execute |
520 | * | |
521 | * Note that this function is currently incompatible with the | |
00db8189 | 522 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 523 | * current state. Use at own risk. |
00db8189 | 524 | */ |
2f53e904 | 525 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 526 | { |
28b04113 | 527 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 | 528 | u16 val = mii_data->val_in; |
79ce0477 | 529 | bool change_autoneg = false; |
00db8189 AF |
530 | |
531 | switch (cmd) { | |
532 | case SIOCGMIIPHY: | |
e5a03bfd | 533 | mii_data->phy_id = phydev->mdio.addr; |
c6d6a511 LB |
534 | /* fall through */ |
535 | ||
00db8189 | 536 | case SIOCGMIIREG: |
e5a03bfd AL |
537 | mii_data->val_out = mdiobus_read(phydev->mdio.bus, |
538 | mii_data->phy_id, | |
af1dc13e | 539 | mii_data->reg_num); |
e62a768f | 540 | return 0; |
00db8189 AF |
541 | |
542 | case SIOCSMIIREG: | |
e5a03bfd | 543 | if (mii_data->phy_id == phydev->mdio.addr) { |
e109374f | 544 | switch (mii_data->reg_num) { |
00db8189 | 545 | case MII_BMCR: |
79ce0477 BH |
546 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { |
547 | if (phydev->autoneg == AUTONEG_ENABLE) | |
548 | change_autoneg = true; | |
00db8189 | 549 | phydev->autoneg = AUTONEG_DISABLE; |
79ce0477 BH |
550 | if (val & BMCR_FULLDPLX) |
551 | phydev->duplex = DUPLEX_FULL; | |
552 | else | |
553 | phydev->duplex = DUPLEX_HALF; | |
554 | if (val & BMCR_SPEED1000) | |
555 | phydev->speed = SPEED_1000; | |
556 | else if (val & BMCR_SPEED100) | |
557 | phydev->speed = SPEED_100; | |
558 | else phydev->speed = SPEED_10; | |
559 | } | |
560 | else { | |
561 | if (phydev->autoneg == AUTONEG_DISABLE) | |
562 | change_autoneg = true; | |
00db8189 | 563 | phydev->autoneg = AUTONEG_ENABLE; |
79ce0477 | 564 | } |
00db8189 AF |
565 | break; |
566 | case MII_ADVERTISE: | |
79ce0477 BH |
567 | phydev->advertising = mii_adv_to_ethtool_adv_t(val); |
568 | change_autoneg = true; | |
00db8189 AF |
569 | break; |
570 | default: | |
571 | /* do nothing */ | |
572 | break; | |
573 | } | |
574 | } | |
575 | ||
e5a03bfd | 576 | mdiobus_write(phydev->mdio.bus, mii_data->phy_id, |
af1dc13e PK |
577 | mii_data->reg_num, val); |
578 | ||
e5a03bfd | 579 | if (mii_data->phy_id == phydev->mdio.addr && |
cf18b778 | 580 | mii_data->reg_num == MII_BMCR && |
2613f95f | 581 | val & BMCR_RESET) |
e62a768f | 582 | return phy_init_hw(phydev); |
79ce0477 BH |
583 | |
584 | if (change_autoneg) | |
585 | return phy_start_aneg(phydev); | |
586 | ||
e62a768f | 587 | return 0; |
dda93b48 | 588 | |
c1f19b51 | 589 | case SIOCSHWTSTAMP: |
25149ef9 | 590 | if (phydev->drv && phydev->drv->hwtstamp) |
c1f19b51 RC |
591 | return phydev->drv->hwtstamp(phydev, ifr); |
592 | /* fall through */ | |
593 | ||
dda93b48 | 594 | default: |
c6d6a511 | 595 | return -EOPNOTSUPP; |
00db8189 | 596 | } |
00db8189 | 597 | } |
680e9fe9 | 598 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 599 | |
b3df0da8 | 600 | /** |
f555f34f | 601 | * phy_start_aneg_priv - start auto-negotiation for this PHY device |
b3df0da8 | 602 | * @phydev: the phy_device struct |
f555f34f | 603 | * @sync: indicate whether we should wait for the workqueue cancelation |
e1393456 | 604 | * |
b3df0da8 RD |
605 | * Description: Sanitizes the settings (if we're not autonegotiating |
606 | * them), and then calls the driver's config_aneg function. | |
607 | * If the PHYCONTROL Layer is operating, we change the state to | |
608 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 | 609 | */ |
f555f34f | 610 | static int phy_start_aneg_priv(struct phy_device *phydev, bool sync) |
e1393456 | 611 | { |
f555f34f | 612 | bool trigger = 0; |
e1393456 AF |
613 | int err; |
614 | ||
25149ef9 FF |
615 | if (!phydev->drv) |
616 | return -EIO; | |
617 | ||
35b5f6b1 | 618 | mutex_lock(&phydev->lock); |
e1393456 AF |
619 | |
620 | if (AUTONEG_DISABLE == phydev->autoneg) | |
621 | phy_sanitize_settings(phydev); | |
622 | ||
9b3320ef BH |
623 | /* Invalidate LP advertising flags */ |
624 | phydev->lp_advertising = 0; | |
625 | ||
e1393456 | 626 | err = phydev->drv->config_aneg(phydev); |
e1393456 AF |
627 | if (err < 0) |
628 | goto out_unlock; | |
629 | ||
630 | if (phydev->state != PHY_HALTED) { | |
631 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
632 | phydev->state = PHY_AN; | |
633 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
634 | } else { | |
635 | phydev->state = PHY_FORCING; | |
636 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
637 | } | |
638 | } | |
639 | ||
f555f34f AK |
640 | /* Re-schedule a PHY state machine to check PHY status because |
641 | * negotiation may already be done and aneg interrupt may not be | |
642 | * generated. | |
643 | */ | |
644 | if (phy_interrupt_is_valid(phydev) && (phydev->state == PHY_AN)) { | |
645 | err = phy_aneg_done(phydev); | |
646 | if (err > 0) { | |
647 | trigger = true; | |
648 | err = 0; | |
649 | } | |
650 | } | |
651 | ||
e1393456 | 652 | out_unlock: |
35b5f6b1 | 653 | mutex_unlock(&phydev->lock); |
f555f34f AK |
654 | |
655 | if (trigger) | |
656 | phy_trigger_machine(phydev, sync); | |
657 | ||
e1393456 AF |
658 | return err; |
659 | } | |
f555f34f AK |
660 | |
661 | /** | |
662 | * phy_start_aneg - start auto-negotiation for this PHY device | |
663 | * @phydev: the phy_device struct | |
664 | * | |
665 | * Description: Sanitizes the settings (if we're not autonegotiating | |
666 | * them), and then calls the driver's config_aneg function. | |
667 | * If the PHYCONTROL Layer is operating, we change the state to | |
668 | * reflect the beginning of Auto-negotiation or forcing. | |
669 | */ | |
670 | int phy_start_aneg(struct phy_device *phydev) | |
671 | { | |
672 | return phy_start_aneg_priv(phydev, true); | |
673 | } | |
e1393456 AF |
674 | EXPORT_SYMBOL(phy_start_aneg); |
675 | ||
b3df0da8 RD |
676 | /** |
677 | * phy_start_machine - start PHY state machine tracking | |
678 | * @phydev: the phy_device struct | |
00db8189 | 679 | * |
b3df0da8 | 680 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
681 | * which tracks whether the PHY is starting up, negotiating, |
682 | * etc. This function starts the timer which tracks the state | |
29935aeb SS |
683 | * of the PHY. If you want to maintain your own state machine, |
684 | * do not call this function. | |
b3df0da8 | 685 | */ |
29935aeb | 686 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 687 | { |
bbb47bde | 688 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
689 | } |
690 | ||
3c293f4e AL |
691 | /** |
692 | * phy_trigger_machine - trigger the state machine to run | |
693 | * | |
694 | * @phydev: the phy_device struct | |
eab12771 | 695 | * @sync: indicate whether we should wait for the workqueue cancelation |
3c293f4e AL |
696 | * |
697 | * Description: There has been a change in state which requires that the | |
698 | * state machine runs. | |
699 | */ | |
700 | ||
f555f34f | 701 | void phy_trigger_machine(struct phy_device *phydev, bool sync) |
3c293f4e | 702 | { |
eab12771 FF |
703 | if (sync) |
704 | cancel_delayed_work_sync(&phydev->state_queue); | |
705 | else | |
706 | cancel_delayed_work(&phydev->state_queue); | |
3c293f4e AL |
707 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); |
708 | } | |
709 | ||
b3df0da8 RD |
710 | /** |
711 | * phy_stop_machine - stop the PHY state machine tracking | |
712 | * @phydev: target phy_device struct | |
00db8189 | 713 | * |
b3df0da8 | 714 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 715 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
716 | * phy_detach. |
717 | */ | |
718 | void phy_stop_machine(struct phy_device *phydev) | |
719 | { | |
a390d1f3 | 720 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 721 | |
35b5f6b1 | 722 | mutex_lock(&phydev->lock); |
49d52e81 | 723 | if (phydev->state > PHY_UP && phydev->state != PHY_HALTED) |
00db8189 | 724 | phydev->state = PHY_UP; |
35b5f6b1 | 725 | mutex_unlock(&phydev->lock); |
00db8189 AF |
726 | } |
727 | ||
b3df0da8 RD |
728 | /** |
729 | * phy_error - enter HALTED state for this PHY device | |
730 | * @phydev: target phy_device struct | |
00db8189 AF |
731 | * |
732 | * Moves the PHY to the HALTED state in response to a read | |
733 | * or write error, and tells the controller the link is down. | |
734 | * Must not be called from interrupt context, or while the | |
735 | * phydev->lock is held. | |
736 | */ | |
9b9a8bfc | 737 | static void phy_error(struct phy_device *phydev) |
00db8189 | 738 | { |
35b5f6b1 | 739 | mutex_lock(&phydev->lock); |
00db8189 | 740 | phydev->state = PHY_HALTED; |
35b5f6b1 | 741 | mutex_unlock(&phydev->lock); |
3c293f4e | 742 | |
eab12771 | 743 | phy_trigger_machine(phydev, false); |
00db8189 AF |
744 | } |
745 | ||
b3df0da8 RD |
746 | /** |
747 | * phy_interrupt - PHY interrupt handler | |
748 | * @irq: interrupt line | |
749 | * @phy_dat: phy_device pointer | |
e1393456 | 750 | * |
b3df0da8 | 751 | * Description: When a PHY interrupt occurs, the handler disables |
664fcf12 | 752 | * interrupts, and uses phy_change to handle the interrupt. |
e1393456 | 753 | */ |
7d12e780 | 754 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
755 | { |
756 | struct phy_device *phydev = phy_dat; | |
757 | ||
3c3070d7 MR |
758 | if (PHY_HALTED == phydev->state) |
759 | return IRQ_NONE; /* It can't be ours. */ | |
760 | ||
e1393456 | 761 | disable_irq_nosync(irq); |
0ac49527 | 762 | atomic_inc(&phydev->irq_disable); |
e1393456 | 763 | |
664fcf12 | 764 | phy_change(phydev); |
e1393456 AF |
765 | |
766 | return IRQ_HANDLED; | |
767 | } | |
768 | ||
b3df0da8 RD |
769 | /** |
770 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
771 | * @phydev: target phy_device struct | |
772 | */ | |
89ff05ec | 773 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 774 | { |
553fe92b | 775 | int err = phy_clear_interrupt(phydev); |
00db8189 | 776 | |
e1393456 AF |
777 | if (err < 0) |
778 | return err; | |
00db8189 | 779 | |
553fe92b | 780 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 781 | } |
00db8189 | 782 | |
b3df0da8 RD |
783 | /** |
784 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
785 | * @phydev: target phy_device struct | |
786 | */ | |
89ff05ec | 787 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
788 | { |
789 | int err; | |
790 | ||
791 | /* Disable PHY interrupts */ | |
792 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
00db8189 AF |
793 | if (err) |
794 | goto phy_err; | |
795 | ||
796 | /* Clear the interrupt */ | |
797 | err = phy_clear_interrupt(phydev); | |
00db8189 AF |
798 | if (err) |
799 | goto phy_err; | |
800 | ||
801 | return 0; | |
802 | ||
803 | phy_err: | |
804 | phy_error(phydev); | |
805 | ||
806 | return err; | |
807 | } | |
e1393456 | 808 | |
b3df0da8 RD |
809 | /** |
810 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
811 | * @phydev: target phy_device struct | |
e1393456 | 812 | * |
b3df0da8 RD |
813 | * Description: Request the interrupt for the given PHY. |
814 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 815 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 816 | * This should only be called with a valid IRQ number. |
b3df0da8 | 817 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
818 | */ |
819 | int phy_start_interrupts(struct phy_device *phydev) | |
820 | { | |
0ac49527 | 821 | atomic_set(&phydev->irq_disable, 0); |
c974bdbc AL |
822 | if (request_threaded_irq(phydev->irq, NULL, phy_interrupt, |
823 | IRQF_ONESHOT | IRQF_SHARED, | |
ae0219cb | 824 | phydev_name(phydev), phydev) < 0) { |
8d242488 | 825 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
e5a03bfd | 826 | phydev->mdio.bus->name, phydev->irq); |
e1393456 AF |
827 | phydev->irq = PHY_POLL; |
828 | return 0; | |
829 | } | |
830 | ||
e62a768f | 831 | return phy_enable_interrupts(phydev); |
e1393456 AF |
832 | } |
833 | EXPORT_SYMBOL(phy_start_interrupts); | |
834 | ||
b3df0da8 RD |
835 | /** |
836 | * phy_stop_interrupts - disable interrupts from a PHY device | |
837 | * @phydev: target phy_device struct | |
838 | */ | |
e1393456 AF |
839 | int phy_stop_interrupts(struct phy_device *phydev) |
840 | { | |
553fe92b | 841 | int err = phy_disable_interrupts(phydev); |
e1393456 AF |
842 | |
843 | if (err) | |
844 | phy_error(phydev); | |
845 | ||
0ac49527 MR |
846 | free_irq(phydev->irq, phydev); |
847 | ||
2f53e904 | 848 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
849 | * been left unbalanced from phy_interrupt() and enable_irq() |
850 | * has to be called so that other devices on the line work. | |
851 | */ | |
852 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
853 | enable_irq(phydev->irq); | |
e1393456 AF |
854 | |
855 | return err; | |
856 | } | |
857 | EXPORT_SYMBOL(phy_stop_interrupts); | |
858 | ||
b3df0da8 | 859 | /** |
664fcf12 AL |
860 | * phy_change - Called by the phy_interrupt to handle PHY changes |
861 | * @phydev: phy_device struct that interrupted | |
b3df0da8 | 862 | */ |
664fcf12 | 863 | void phy_change(struct phy_device *phydev) |
e1393456 | 864 | { |
deccd16f FF |
865 | if (phy_interrupt_is_valid(phydev)) { |
866 | if (phydev->drv->did_interrupt && | |
867 | !phydev->drv->did_interrupt(phydev)) | |
868 | goto ignore; | |
a8729eb3 | 869 | |
deccd16f FF |
870 | if (phy_disable_interrupts(phydev)) |
871 | goto phy_err; | |
872 | } | |
e1393456 | 873 | |
35b5f6b1 | 874 | mutex_lock(&phydev->lock); |
e1393456 AF |
875 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
876 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 877 | mutex_unlock(&phydev->lock); |
e1393456 | 878 | |
deccd16f FF |
879 | if (phy_interrupt_is_valid(phydev)) { |
880 | atomic_dec(&phydev->irq_disable); | |
881 | enable_irq(phydev->irq); | |
e1393456 | 882 | |
deccd16f FF |
883 | /* Reenable interrupts */ |
884 | if (PHY_HALTED != phydev->state && | |
885 | phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) | |
886 | goto irq_enable_err; | |
887 | } | |
e1393456 | 888 | |
a390d1f3 | 889 | /* reschedule state queue work to run as soon as possible */ |
eab12771 | 890 | phy_trigger_machine(phydev, true); |
e1393456 AF |
891 | return; |
892 | ||
a8729eb3 AG |
893 | ignore: |
894 | atomic_dec(&phydev->irq_disable); | |
895 | enable_irq(phydev->irq); | |
896 | return; | |
897 | ||
e1393456 AF |
898 | irq_enable_err: |
899 | disable_irq(phydev->irq); | |
0ac49527 | 900 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
901 | phy_err: |
902 | phy_error(phydev); | |
903 | } | |
904 | ||
664fcf12 AL |
905 | /** |
906 | * phy_change_work - Scheduled by the phy_mac_interrupt to handle PHY changes | |
907 | * @work: work_struct that describes the work to be done | |
908 | */ | |
909 | void phy_change_work(struct work_struct *work) | |
910 | { | |
911 | struct phy_device *phydev = | |
912 | container_of(work, struct phy_device, phy_queue); | |
913 | ||
914 | phy_change(phydev); | |
915 | } | |
916 | ||
b3df0da8 RD |
917 | /** |
918 | * phy_stop - Bring down the PHY link, and stop checking the status | |
919 | * @phydev: target phy_device struct | |
920 | */ | |
e1393456 AF |
921 | void phy_stop(struct phy_device *phydev) |
922 | { | |
35b5f6b1 | 923 | mutex_lock(&phydev->lock); |
e1393456 AF |
924 | |
925 | if (PHY_HALTED == phydev->state) | |
926 | goto out_unlock; | |
927 | ||
2c7b4921 | 928 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
929 | /* Disable PHY Interrupts */ |
930 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 931 | |
3c3070d7 MR |
932 | /* Clear any pending interrupts */ |
933 | phy_clear_interrupt(phydev); | |
934 | } | |
e1393456 | 935 | |
6daf6531 MR |
936 | phydev->state = PHY_HALTED; |
937 | ||
e1393456 | 938 | out_unlock: |
35b5f6b1 | 939 | mutex_unlock(&phydev->lock); |
3c3070d7 | 940 | |
2f53e904 | 941 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
942 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
943 | * will not reenable interrupts. | |
944 | */ | |
e1393456 | 945 | } |
2f53e904 | 946 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 947 | |
b3df0da8 RD |
948 | /** |
949 | * phy_start - start or restart a PHY device | |
950 | * @phydev: target phy_device struct | |
e1393456 | 951 | * |
b3df0da8 | 952 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
953 | * handle PHY-related work. Used during startup to start the |
954 | * PHY, and after a call to phy_stop() to resume operation. | |
955 | * Also used to indicate the MDIO bus has cleared an error | |
956 | * condition. | |
957 | */ | |
958 | void phy_start(struct phy_device *phydev) | |
959 | { | |
c15e10e7 TB |
960 | bool do_resume = false; |
961 | int err = 0; | |
962 | ||
35b5f6b1 | 963 | mutex_lock(&phydev->lock); |
e1393456 AF |
964 | |
965 | switch (phydev->state) { | |
e109374f FF |
966 | case PHY_STARTING: |
967 | phydev->state = PHY_PENDING; | |
968 | break; | |
969 | case PHY_READY: | |
970 | phydev->state = PHY_UP; | |
971 | break; | |
972 | case PHY_HALTED: | |
c15e10e7 | 973 | /* make sure interrupts are re-enabled for the PHY */ |
84a527a4 SX |
974 | if (phydev->irq != PHY_POLL) { |
975 | err = phy_enable_interrupts(phydev); | |
976 | if (err < 0) | |
977 | break; | |
978 | } | |
c15e10e7 | 979 | |
e109374f | 980 | phydev->state = PHY_RESUMING; |
c15e10e7 TB |
981 | do_resume = true; |
982 | break; | |
e109374f FF |
983 | default: |
984 | break; | |
e1393456 | 985 | } |
35b5f6b1 | 986 | mutex_unlock(&phydev->lock); |
c15e10e7 TB |
987 | |
988 | /* if phy was suspended, bring the physical link up again */ | |
989 | if (do_resume) | |
990 | phy_resume(phydev); | |
3c293f4e | 991 | |
eab12771 | 992 | phy_trigger_machine(phydev, true); |
e1393456 | 993 | } |
e1393456 | 994 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 995 | |
61a17965 ZB |
996 | static void phy_adjust_link(struct phy_device *phydev) |
997 | { | |
998 | phydev->adjust_link(phydev->attached_dev); | |
2e0bc452 | 999 | phy_led_trigger_change_speed(phydev); |
61a17965 ZB |
1000 | } |
1001 | ||
35b5f6b1 NC |
1002 | /** |
1003 | * phy_state_machine - Handle the state machine | |
1004 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 1005 | */ |
4f9c85a1 | 1006 | void phy_state_machine(struct work_struct *work) |
00db8189 | 1007 | { |
bf6aede7 | 1008 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 1009 | struct phy_device *phydev = |
a390d1f3 | 1010 | container_of(dwork, struct phy_device, state_queue); |
c15e10e7 | 1011 | bool needs_aneg = false, do_suspend = false; |
3e2186e0 | 1012 | enum phy_state old_state; |
00db8189 | 1013 | int err = 0; |
11e122cb | 1014 | int old_link; |
00db8189 | 1015 | |
35b5f6b1 | 1016 | mutex_lock(&phydev->lock); |
00db8189 | 1017 | |
3e2186e0 FF |
1018 | old_state = phydev->state; |
1019 | ||
25149ef9 | 1020 | if (phydev->drv && phydev->drv->link_change_notify) |
2b8f2a28 DM |
1021 | phydev->drv->link_change_notify(phydev); |
1022 | ||
e109374f FF |
1023 | switch (phydev->state) { |
1024 | case PHY_DOWN: | |
1025 | case PHY_STARTING: | |
1026 | case PHY_READY: | |
1027 | case PHY_PENDING: | |
1028 | break; | |
1029 | case PHY_UP: | |
6e14a5ee | 1030 | needs_aneg = true; |
00db8189 | 1031 | |
e109374f FF |
1032 | phydev->link_timeout = PHY_AN_TIMEOUT; |
1033 | ||
1034 | break; | |
1035 | case PHY_AN: | |
1036 | err = phy_read_status(phydev); | |
e109374f | 1037 | if (err < 0) |
00db8189 | 1038 | break; |
6b655529 | 1039 | |
2f53e904 | 1040 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
1041 | if (!phydev->link) { |
1042 | phydev->state = PHY_NOLINK; | |
1043 | netif_carrier_off(phydev->attached_dev); | |
61a17965 | 1044 | phy_adjust_link(phydev); |
e109374f FF |
1045 | break; |
1046 | } | |
6b655529 | 1047 | |
2f53e904 | 1048 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
1049 | err = phy_aneg_done(phydev); |
1050 | if (err < 0) | |
1051 | break; | |
6b655529 | 1052 | |
e109374f FF |
1053 | /* If AN is done, we're running */ |
1054 | if (err > 0) { | |
1055 | phydev->state = PHY_RUNNING; | |
1056 | netif_carrier_on(phydev->attached_dev); | |
61a17965 | 1057 | phy_adjust_link(phydev); |
00db8189 | 1058 | |
fa8cddaf | 1059 | } else if (0 == phydev->link_timeout--) |
6e14a5ee | 1060 | needs_aneg = true; |
e109374f FF |
1061 | break; |
1062 | case PHY_NOLINK: | |
321beec5 AL |
1063 | if (phy_interrupt_is_valid(phydev)) |
1064 | break; | |
1065 | ||
e109374f | 1066 | err = phy_read_status(phydev); |
e109374f | 1067 | if (err) |
00db8189 | 1068 | break; |
00db8189 | 1069 | |
e109374f | 1070 | if (phydev->link) { |
e46e08b8 BK |
1071 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1072 | err = phy_aneg_done(phydev); | |
1073 | if (err < 0) | |
1074 | break; | |
1075 | ||
1076 | if (!err) { | |
1077 | phydev->state = PHY_AN; | |
1078 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
1079 | break; | |
1080 | } | |
1081 | } | |
e109374f FF |
1082 | phydev->state = PHY_RUNNING; |
1083 | netif_carrier_on(phydev->attached_dev); | |
61a17965 | 1084 | phy_adjust_link(phydev); |
e109374f FF |
1085 | } |
1086 | break; | |
1087 | case PHY_FORCING: | |
1088 | err = genphy_update_link(phydev); | |
e109374f | 1089 | if (err) |
00db8189 | 1090 | break; |
00db8189 | 1091 | |
e109374f FF |
1092 | if (phydev->link) { |
1093 | phydev->state = PHY_RUNNING; | |
1094 | netif_carrier_on(phydev->attached_dev); | |
1095 | } else { | |
1096 | if (0 == phydev->link_timeout--) | |
6e14a5ee | 1097 | needs_aneg = true; |
e109374f | 1098 | } |
00db8189 | 1099 | |
61a17965 | 1100 | phy_adjust_link(phydev); |
e109374f FF |
1101 | break; |
1102 | case PHY_RUNNING: | |
d5c3d846 FF |
1103 | /* Only register a CHANGE if we are polling and link changed |
1104 | * since latest checking. | |
e109374f | 1105 | */ |
d5c3d846 | 1106 | if (phydev->irq == PHY_POLL) { |
11e122cb SX |
1107 | old_link = phydev->link; |
1108 | err = phy_read_status(phydev); | |
1109 | if (err) | |
1110 | break; | |
1111 | ||
1112 | if (old_link != phydev->link) | |
1113 | phydev->state = PHY_CHANGELINK; | |
1114 | } | |
811a9191 ZK |
1115 | /* |
1116 | * Failsafe: check that nobody set phydev->link=0 between two | |
1117 | * poll cycles, otherwise we won't leave RUNNING state as long | |
1118 | * as link remains down. | |
1119 | */ | |
1120 | if (!phydev->link && phydev->state == PHY_RUNNING) { | |
1121 | phydev->state = PHY_CHANGELINK; | |
1122 | phydev_err(phydev, "no link in PHY_RUNNING\n"); | |
1123 | } | |
e109374f FF |
1124 | break; |
1125 | case PHY_CHANGELINK: | |
1126 | err = phy_read_status(phydev); | |
e109374f | 1127 | if (err) |
00db8189 | 1128 | break; |
00db8189 | 1129 | |
e109374f FF |
1130 | if (phydev->link) { |
1131 | phydev->state = PHY_RUNNING; | |
1132 | netif_carrier_on(phydev->attached_dev); | |
1133 | } else { | |
1134 | phydev->state = PHY_NOLINK; | |
1135 | netif_carrier_off(phydev->attached_dev); | |
1136 | } | |
00db8189 | 1137 | |
61a17965 | 1138 | phy_adjust_link(phydev); |
00db8189 | 1139 | |
e109374f FF |
1140 | if (phy_interrupt_is_valid(phydev)) |
1141 | err = phy_config_interrupt(phydev, | |
2f53e904 | 1142 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
1143 | break; |
1144 | case PHY_HALTED: | |
1145 | if (phydev->link) { | |
1146 | phydev->link = 0; | |
1147 | netif_carrier_off(phydev->attached_dev); | |
61a17965 | 1148 | phy_adjust_link(phydev); |
6e14a5ee | 1149 | do_suspend = true; |
e109374f FF |
1150 | } |
1151 | break; | |
1152 | case PHY_RESUMING: | |
e109374f FF |
1153 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1154 | err = phy_aneg_done(phydev); | |
1155 | if (err < 0) | |
00db8189 AF |
1156 | break; |
1157 | ||
e109374f | 1158 | /* err > 0 if AN is done. |
2f53e904 SS |
1159 | * Otherwise, it's 0, and we're still waiting for AN |
1160 | */ | |
e109374f | 1161 | if (err > 0) { |
42caa074 WF |
1162 | err = phy_read_status(phydev); |
1163 | if (err) | |
1164 | break; | |
1165 | ||
1166 | if (phydev->link) { | |
1167 | phydev->state = PHY_RUNNING; | |
1168 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 1169 | } else { |
42caa074 | 1170 | phydev->state = PHY_NOLINK; |
2f53e904 | 1171 | } |
61a17965 | 1172 | phy_adjust_link(phydev); |
e109374f FF |
1173 | } else { |
1174 | phydev->state = PHY_AN; | |
1175 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 1176 | } |
e109374f FF |
1177 | } else { |
1178 | err = phy_read_status(phydev); | |
1179 | if (err) | |
1180 | break; | |
1181 | ||
1182 | if (phydev->link) { | |
1183 | phydev->state = PHY_RUNNING; | |
1184 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 1185 | } else { |
e109374f | 1186 | phydev->state = PHY_NOLINK; |
2f53e904 | 1187 | } |
61a17965 | 1188 | phy_adjust_link(phydev); |
e109374f FF |
1189 | } |
1190 | break; | |
00db8189 AF |
1191 | } |
1192 | ||
35b5f6b1 | 1193 | mutex_unlock(&phydev->lock); |
00db8189 AF |
1194 | |
1195 | if (needs_aneg) | |
f555f34f | 1196 | err = phy_start_aneg_priv(phydev, false); |
6e14a5ee | 1197 | else if (do_suspend) |
be9dad1f SH |
1198 | phy_suspend(phydev); |
1199 | ||
00db8189 AF |
1200 | if (err < 0) |
1201 | phy_error(phydev); | |
1202 | ||
72ba48be AL |
1203 | phydev_dbg(phydev, "PHY state change %s -> %s\n", |
1204 | phy_state_to_str(old_state), | |
1205 | phy_state_to_str(phydev->state)); | |
3e2186e0 | 1206 | |
d5c3d846 FF |
1207 | /* Only re-schedule a PHY state machine change if we are polling the |
1208 | * PHY, if PHY_IGNORE_INTERRUPT is set, then we will be moving | |
1209 | * between states from phy_mac_interrupt() | |
1210 | */ | |
1211 | if (phydev->irq == PHY_POLL) | |
1212 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, | |
1213 | PHY_STATE_TIME * HZ); | |
35b5f6b1 | 1214 | } |
a59a4d19 | 1215 | |
664fcf12 AL |
1216 | /** |
1217 | * phy_mac_interrupt - MAC says the link has changed | |
1218 | * @phydev: phy_device struct with changed link | |
1219 | * @new_link: Link is Up/Down. | |
1220 | * | |
1221 | * Description: The MAC layer is able indicate there has been a change | |
1222 | * in the PHY link status. Set the new link status, and trigger the | |
1223 | * state machine, work a work queue. | |
1224 | */ | |
5ea94e76 FF |
1225 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
1226 | { | |
5ea94e76 | 1227 | phydev->link = new_link; |
deccd16f FF |
1228 | |
1229 | /* Trigger a state machine change */ | |
1230 | queue_work(system_power_efficient_wq, &phydev->phy_queue); | |
5ea94e76 FF |
1231 | } |
1232 | EXPORT_SYMBOL(phy_mac_interrupt); | |
1233 | ||
a59a4d19 GC |
1234 | /** |
1235 | * phy_init_eee - init and check the EEE feature | |
1236 | * @phydev: target phy_device struct | |
1237 | * @clk_stop_enable: PHY may stop the clock during LPI | |
1238 | * | |
1239 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
1240 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
1241 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
1242 | * bit if required. | |
1243 | */ | |
1244 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
1245 | { | |
25149ef9 FF |
1246 | if (!phydev->drv) |
1247 | return -EIO; | |
1248 | ||
a59a4d19 | 1249 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
a59a4d19 | 1250 | */ |
32d75141 | 1251 | if (phydev->duplex == DUPLEX_FULL) { |
a59a4d19 GC |
1252 | int eee_lp, eee_cap, eee_adv; |
1253 | u32 lp, cap, adv; | |
4ae6e50c | 1254 | int status; |
a59a4d19 GC |
1255 | |
1256 | /* Read phy status to properly get the right settings */ | |
1257 | status = phy_read_status(phydev); | |
1258 | if (status) | |
1259 | return status; | |
1260 | ||
1261 | /* First check if the EEE ability is supported */ | |
a6d99fcd | 1262 | eee_cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); |
7a4cecf7 GC |
1263 | if (eee_cap <= 0) |
1264 | goto eee_exit_err; | |
a59a4d19 | 1265 | |
b32607dd | 1266 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 1267 | if (!cap) |
7a4cecf7 | 1268 | goto eee_exit_err; |
a59a4d19 GC |
1269 | |
1270 | /* Check which link settings negotiated and verify it in | |
1271 | * the EEE advertising registers. | |
1272 | */ | |
a6d99fcd | 1273 | eee_lp = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE); |
7a4cecf7 GC |
1274 | if (eee_lp <= 0) |
1275 | goto eee_exit_err; | |
a59a4d19 | 1276 | |
a6d99fcd | 1277 | eee_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
7a4cecf7 GC |
1278 | if (eee_adv <= 0) |
1279 | goto eee_exit_err; | |
a59a4d19 | 1280 | |
b32607dd AB |
1281 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
1282 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
54da5a8b | 1283 | if (!phy_check_valid(phydev->speed, phydev->duplex, lp & adv)) |
7a4cecf7 | 1284 | goto eee_exit_err; |
a59a4d19 GC |
1285 | |
1286 | if (clk_stop_enable) { | |
1287 | /* Configure the PHY to stop receiving xMII | |
1288 | * clock while it is signaling LPI. | |
1289 | */ | |
a6d99fcd | 1290 | int val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1); |
a59a4d19 GC |
1291 | if (val < 0) |
1292 | return val; | |
1293 | ||
1294 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
a6d99fcd | 1295 | phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, val); |
a59a4d19 GC |
1296 | } |
1297 | ||
e62a768f | 1298 | return 0; /* EEE supported */ |
a59a4d19 | 1299 | } |
7a4cecf7 | 1300 | eee_exit_err: |
e62a768f | 1301 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1302 | } |
1303 | EXPORT_SYMBOL(phy_init_eee); | |
1304 | ||
1305 | /** | |
1306 | * phy_get_eee_err - report the EEE wake error count | |
1307 | * @phydev: target phy_device struct | |
1308 | * | |
1309 | * Description: it is to report the number of time where the PHY | |
1310 | * failed to complete its normal wake sequence. | |
1311 | */ | |
1312 | int phy_get_eee_err(struct phy_device *phydev) | |
1313 | { | |
25149ef9 FF |
1314 | if (!phydev->drv) |
1315 | return -EIO; | |
1316 | ||
a6d99fcd | 1317 | return phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR); |
a59a4d19 GC |
1318 | } |
1319 | EXPORT_SYMBOL(phy_get_eee_err); | |
1320 | ||
1321 | /** | |
1322 | * phy_ethtool_get_eee - get EEE supported and status | |
1323 | * @phydev: target phy_device struct | |
1324 | * @data: ethtool_eee data | |
1325 | * | |
1326 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1327 | * capabilities. | |
1328 | */ | |
1329 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1330 | { | |
1331 | int val; | |
1332 | ||
25149ef9 FF |
1333 | if (!phydev->drv) |
1334 | return -EIO; | |
1335 | ||
a59a4d19 | 1336 | /* Get Supported EEE */ |
a6d99fcd | 1337 | val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); |
a59a4d19 GC |
1338 | if (val < 0) |
1339 | return val; | |
b32607dd | 1340 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1341 | |
1342 | /* Get advertisement EEE */ | |
a6d99fcd | 1343 | val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
a59a4d19 GC |
1344 | if (val < 0) |
1345 | return val; | |
b32607dd | 1346 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1347 | |
1348 | /* Get LP advertisement EEE */ | |
a6d99fcd | 1349 | val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE); |
a59a4d19 GC |
1350 | if (val < 0) |
1351 | return val; | |
b32607dd | 1352 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1353 | |
1354 | return 0; | |
1355 | } | |
1356 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1357 | ||
1358 | /** | |
1359 | * phy_ethtool_set_eee - set EEE supported and status | |
1360 | * @phydev: target phy_device struct | |
1361 | * @data: ethtool_eee data | |
1362 | * | |
1363 | * Description: it is to program the Advertisement EEE register. | |
1364 | */ | |
1365 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1366 | { | |
f75abeb8 | 1367 | int cap, old_adv, adv, ret; |
a59a4d19 | 1368 | |
25149ef9 FF |
1369 | if (!phydev->drv) |
1370 | return -EIO; | |
1371 | ||
83ea067f RK |
1372 | /* Get Supported EEE */ |
1373 | cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); | |
1374 | if (cap < 0) | |
1375 | return cap; | |
d853d145 | 1376 | |
f75abeb8 RK |
1377 | old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
1378 | if (old_adv < 0) | |
1379 | return old_adv; | |
1380 | ||
83ea067f | 1381 | adv = ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap; |
a59a4d19 | 1382 | |
83ea067f RK |
1383 | /* Mask prohibited EEE modes */ |
1384 | adv &= ~phydev->eee_broken_modes; | |
1385 | ||
f75abeb8 RK |
1386 | if (old_adv != adv) { |
1387 | ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv); | |
1388 | if (ret < 0) | |
1389 | return ret; | |
1390 | ||
1391 | /* Restart autonegotiation so the new modes get sent to the | |
1392 | * link partner. | |
1393 | */ | |
1394 | ret = genphy_restart_aneg(phydev); | |
1395 | if (ret < 0) | |
1396 | return ret; | |
1397 | } | |
1398 | ||
1399 | return 0; | |
a59a4d19 GC |
1400 | } |
1401 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1402 | |
1403 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1404 | { | |
25149ef9 | 1405 | if (phydev->drv && phydev->drv->set_wol) |
42e836eb MS |
1406 | return phydev->drv->set_wol(phydev, wol); |
1407 | ||
1408 | return -EOPNOTSUPP; | |
1409 | } | |
1410 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1411 | ||
1412 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1413 | { | |
25149ef9 | 1414 | if (phydev->drv && phydev->drv->get_wol) |
42e836eb MS |
1415 | phydev->drv->get_wol(phydev, wol); |
1416 | } | |
1417 | EXPORT_SYMBOL(phy_ethtool_get_wol); | |
9d9a77ce PR |
1418 | |
1419 | int phy_ethtool_get_link_ksettings(struct net_device *ndev, | |
1420 | struct ethtool_link_ksettings *cmd) | |
1421 | { | |
1422 | struct phy_device *phydev = ndev->phydev; | |
1423 | ||
1424 | if (!phydev) | |
1425 | return -ENODEV; | |
1426 | ||
1427 | return phy_ethtool_ksettings_get(phydev, cmd); | |
1428 | } | |
1429 | EXPORT_SYMBOL(phy_ethtool_get_link_ksettings); | |
1430 | ||
1431 | int phy_ethtool_set_link_ksettings(struct net_device *ndev, | |
1432 | const struct ethtool_link_ksettings *cmd) | |
1433 | { | |
1434 | struct phy_device *phydev = ndev->phydev; | |
1435 | ||
1436 | if (!phydev) | |
1437 | return -ENODEV; | |
1438 | ||
1439 | return phy_ethtool_ksettings_set(phydev, cmd); | |
1440 | } | |
1441 | EXPORT_SYMBOL(phy_ethtool_set_link_ksettings); | |
e86a8987 FF |
1442 | |
1443 | int phy_ethtool_nway_reset(struct net_device *ndev) | |
1444 | { | |
1445 | struct phy_device *phydev = ndev->phydev; | |
1446 | ||
1447 | if (!phydev) | |
1448 | return -ENODEV; | |
1449 | ||
25149ef9 FF |
1450 | if (!phydev->drv) |
1451 | return -EIO; | |
1452 | ||
e86a8987 FF |
1453 | return genphy_restart_aneg(phydev); |
1454 | } | |
1455 | EXPORT_SYMBOL(phy_ethtool_nway_reset); |