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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> | |
3c3070d7 MR |
32 | #include <linux/timer.h> |
33 | #include <linux/workqueue.h> | |
a59a4d19 | 34 | #include <linux/mdio.h> |
2f53e904 SS |
35 | #include <linux/io.h> |
36 | #include <linux/uaccess.h> | |
60063497 | 37 | #include <linux/atomic.h> |
2f53e904 | 38 | |
00db8189 | 39 | #include <asm/irq.h> |
00db8189 | 40 | |
766d1d38 FF |
41 | static const char *phy_speed_to_str(int speed) |
42 | { | |
43 | switch (speed) { | |
44 | case SPEED_10: | |
45 | return "10Mbps"; | |
46 | case SPEED_100: | |
47 | return "100Mbps"; | |
48 | case SPEED_1000: | |
49 | return "1Gbps"; | |
50 | case SPEED_2500: | |
51 | return "2.5Gbps"; | |
52 | case SPEED_10000: | |
53 | return "10Gbps"; | |
54 | case SPEED_UNKNOWN: | |
55 | return "Unknown"; | |
56 | default: | |
57 | return "Unsupported (update phy.c)"; | |
58 | } | |
59 | } | |
60 | ||
3e2186e0 FF |
61 | #define PHY_STATE_STR(_state) \ |
62 | case PHY_##_state: \ | |
63 | return __stringify(_state); \ | |
64 | ||
65 | static const char *phy_state_to_str(enum phy_state st) | |
66 | { | |
67 | switch (st) { | |
68 | PHY_STATE_STR(DOWN) | |
69 | PHY_STATE_STR(STARTING) | |
70 | PHY_STATE_STR(READY) | |
71 | PHY_STATE_STR(PENDING) | |
72 | PHY_STATE_STR(UP) | |
73 | PHY_STATE_STR(AN) | |
74 | PHY_STATE_STR(RUNNING) | |
75 | PHY_STATE_STR(NOLINK) | |
76 | PHY_STATE_STR(FORCING) | |
77 | PHY_STATE_STR(CHANGELINK) | |
78 | PHY_STATE_STR(HALTED) | |
79 | PHY_STATE_STR(RESUMING) | |
80 | } | |
81 | ||
82 | return NULL; | |
83 | } | |
84 | ||
85 | ||
b3df0da8 RD |
86 | /** |
87 | * phy_print_status - Convenience function to print out the current phy status | |
88 | * @phydev: the phy_device struct | |
e1393456 AF |
89 | */ |
90 | void phy_print_status(struct phy_device *phydev) | |
91 | { | |
2f53e904 | 92 | if (phydev->link) { |
df40cc88 | 93 | netdev_info(phydev->attached_dev, |
766d1d38 FF |
94 | "Link is Up - %s/%s - flow control %s\n", |
95 | phy_speed_to_str(phydev->speed), | |
df40cc88 FF |
96 | DUPLEX_FULL == phydev->duplex ? "Full" : "Half", |
97 | phydev->pause ? "rx/tx" : "off"); | |
2f53e904 | 98 | } else { |
43b6329f | 99 | netdev_info(phydev->attached_dev, "Link is Down\n"); |
2f53e904 | 100 | } |
e1393456 AF |
101 | } |
102 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 103 | |
b3df0da8 RD |
104 | /** |
105 | * phy_clear_interrupt - Ack the phy device's interrupt | |
106 | * @phydev: the phy_device struct | |
107 | * | |
108 | * If the @phydev driver has an ack_interrupt function, call it to | |
109 | * ack and clear the phy device's interrupt. | |
110 | * | |
ad033506 | 111 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 112 | */ |
89ff05ec | 113 | static int phy_clear_interrupt(struct phy_device *phydev) |
00db8189 | 114 | { |
00db8189 | 115 | if (phydev->drv->ack_interrupt) |
e62a768f | 116 | return phydev->drv->ack_interrupt(phydev); |
00db8189 | 117 | |
e62a768f | 118 | return 0; |
00db8189 AF |
119 | } |
120 | ||
b3df0da8 RD |
121 | /** |
122 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
123 | * @phydev: the phy_device struct | |
124 | * @interrupts: interrupt flags to configure for this @phydev | |
125 | * | |
ad033506 | 126 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 127 | */ |
89ff05ec | 128 | static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
00db8189 | 129 | { |
00db8189 AF |
130 | phydev->interrupts = interrupts; |
131 | if (phydev->drv->config_intr) | |
e62a768f | 132 | return phydev->drv->config_intr(phydev); |
00db8189 | 133 | |
e62a768f | 134 | return 0; |
00db8189 AF |
135 | } |
136 | ||
137 | ||
b3df0da8 RD |
138 | /** |
139 | * phy_aneg_done - return auto-negotiation status | |
140 | * @phydev: target phy_device struct | |
00db8189 | 141 | * |
76a423a3 FF |
142 | * Description: Return the auto-negotiation status from this @phydev |
143 | * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation | |
144 | * is still pending. | |
00db8189 | 145 | */ |
372788f9 | 146 | int phy_aneg_done(struct phy_device *phydev) |
00db8189 | 147 | { |
76a423a3 FF |
148 | if (phydev->drv->aneg_done) |
149 | return phydev->drv->aneg_done(phydev); | |
150 | ||
a9fa6e6a | 151 | return genphy_aneg_done(phydev); |
00db8189 | 152 | } |
372788f9 | 153 | EXPORT_SYMBOL(phy_aneg_done); |
00db8189 | 154 | |
00db8189 | 155 | /* A structure for mapping a particular speed and duplex |
2f53e904 SS |
156 | * combination to a particular SUPPORTED and ADVERTISED value |
157 | */ | |
00db8189 AF |
158 | struct phy_setting { |
159 | int speed; | |
160 | int duplex; | |
161 | u32 setting; | |
162 | }; | |
163 | ||
164 | /* A mapping of all SUPPORTED settings to speed/duplex */ | |
f71e1309 | 165 | static const struct phy_setting settings[] = { |
00db8189 | 166 | { |
3e707706 LT |
167 | .speed = SPEED_10000, |
168 | .duplex = DUPLEX_FULL, | |
169 | .setting = SUPPORTED_10000baseKR_Full, | |
170 | }, | |
171 | { | |
172 | .speed = SPEED_10000, | |
173 | .duplex = DUPLEX_FULL, | |
174 | .setting = SUPPORTED_10000baseKX4_Full, | |
175 | }, | |
176 | { | |
177 | .speed = SPEED_10000, | |
00db8189 AF |
178 | .duplex = DUPLEX_FULL, |
179 | .setting = SUPPORTED_10000baseT_Full, | |
180 | }, | |
3e707706 LT |
181 | { |
182 | .speed = SPEED_2500, | |
183 | .duplex = DUPLEX_FULL, | |
184 | .setting = SUPPORTED_2500baseX_Full, | |
185 | }, | |
186 | { | |
187 | .speed = SPEED_1000, | |
188 | .duplex = DUPLEX_FULL, | |
189 | .setting = SUPPORTED_1000baseKX_Full, | |
190 | }, | |
00db8189 AF |
191 | { |
192 | .speed = SPEED_1000, | |
193 | .duplex = DUPLEX_FULL, | |
194 | .setting = SUPPORTED_1000baseT_Full, | |
195 | }, | |
196 | { | |
197 | .speed = SPEED_1000, | |
198 | .duplex = DUPLEX_HALF, | |
199 | .setting = SUPPORTED_1000baseT_Half, | |
200 | }, | |
201 | { | |
202 | .speed = SPEED_100, | |
203 | .duplex = DUPLEX_FULL, | |
204 | .setting = SUPPORTED_100baseT_Full, | |
205 | }, | |
206 | { | |
207 | .speed = SPEED_100, | |
208 | .duplex = DUPLEX_HALF, | |
209 | .setting = SUPPORTED_100baseT_Half, | |
210 | }, | |
211 | { | |
212 | .speed = SPEED_10, | |
213 | .duplex = DUPLEX_FULL, | |
214 | .setting = SUPPORTED_10baseT_Full, | |
215 | }, | |
216 | { | |
217 | .speed = SPEED_10, | |
218 | .duplex = DUPLEX_HALF, | |
219 | .setting = SUPPORTED_10baseT_Half, | |
220 | }, | |
221 | }; | |
222 | ||
ff8ac609 | 223 | #define MAX_NUM_SETTINGS ARRAY_SIZE(settings) |
00db8189 | 224 | |
b3df0da8 RD |
225 | /** |
226 | * phy_find_setting - find a PHY settings array entry that matches speed & duplex | |
227 | * @speed: speed to match | |
228 | * @duplex: duplex to match | |
00db8189 | 229 | * |
b3df0da8 | 230 | * Description: Searches the settings array for the setting which |
00db8189 AF |
231 | * matches the desired speed and duplex, and returns the index |
232 | * of that setting. Returns the index of the last setting if | |
233 | * none of the others match. | |
234 | */ | |
4ae6e50c | 235 | static inline unsigned int phy_find_setting(int speed, int duplex) |
00db8189 | 236 | { |
4ae6e50c | 237 | unsigned int idx = 0; |
00db8189 AF |
238 | |
239 | while (idx < ARRAY_SIZE(settings) && | |
2f53e904 | 240 | (settings[idx].speed != speed || settings[idx].duplex != duplex)) |
00db8189 AF |
241 | idx++; |
242 | ||
243 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
244 | } | |
245 | ||
b3df0da8 RD |
246 | /** |
247 | * phy_find_valid - find a PHY setting that matches the requested features mask | |
248 | * @idx: The first index in settings[] to search | |
249 | * @features: A mask of the valid settings | |
00db8189 | 250 | * |
b3df0da8 | 251 | * Description: Returns the index of the first valid setting less |
00db8189 AF |
252 | * than or equal to the one pointed to by idx, as determined by |
253 | * the mask in features. Returns the index of the last setting | |
254 | * if nothing else matches. | |
255 | */ | |
4ae6e50c | 256 | static inline unsigned int phy_find_valid(unsigned int idx, u32 features) |
00db8189 AF |
257 | { |
258 | while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) | |
259 | idx++; | |
260 | ||
261 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
262 | } | |
263 | ||
1f9127ca ZB |
264 | /** |
265 | * phy_supported_speeds - return all speeds currently supported by a phy device | |
266 | * @phy: The phy device to return supported speeds of. | |
267 | * @speeds: buffer to store supported speeds in. | |
268 | * @size: size of speeds buffer. | |
269 | * | |
270 | * Description: Returns the number of supported speeds, and fills the speeds | |
271 | * buffer with the supported speeds. If speeds buffer is too small to contain | |
272 | * all currently supported speeds, will return as many speeds as can fit. | |
273 | */ | |
274 | unsigned int phy_supported_speeds(struct phy_device *phy, | |
275 | unsigned int *speeds, | |
276 | unsigned int size) | |
277 | { | |
278 | unsigned int count = 0; | |
279 | unsigned int idx = 0; | |
280 | ||
281 | while (idx < MAX_NUM_SETTINGS && count < size) { | |
282 | idx = phy_find_valid(idx, phy->supported); | |
283 | ||
284 | if (!(settings[idx].setting & phy->supported)) | |
285 | break; | |
286 | ||
287 | /* Assumes settings are grouped by speed */ | |
288 | if ((count == 0) || | |
289 | (speeds[count - 1] != settings[idx].speed)) { | |
290 | speeds[count] = settings[idx].speed; | |
291 | count++; | |
292 | } | |
293 | idx++; | |
294 | } | |
295 | ||
296 | return count; | |
297 | } | |
298 | ||
54da5a8b GR |
299 | /** |
300 | * phy_check_valid - check if there is a valid PHY setting which matches | |
301 | * speed, duplex, and feature mask | |
302 | * @speed: speed to match | |
303 | * @duplex: duplex to match | |
304 | * @features: A mask of the valid settings | |
305 | * | |
306 | * Description: Returns true if there is a valid setting, false otherwise. | |
307 | */ | |
308 | static inline bool phy_check_valid(int speed, int duplex, u32 features) | |
309 | { | |
310 | unsigned int idx; | |
311 | ||
312 | idx = phy_find_valid(phy_find_setting(speed, duplex), features); | |
313 | ||
314 | return settings[idx].speed == speed && settings[idx].duplex == duplex && | |
315 | (settings[idx].setting & features); | |
316 | } | |
317 | ||
b3df0da8 RD |
318 | /** |
319 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
320 | * @phydev: the target phy_device struct | |
00db8189 | 321 | * |
b3df0da8 | 322 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 323 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 324 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 325 | */ |
89ff05ec | 326 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 AF |
327 | { |
328 | u32 features = phydev->supported; | |
4ae6e50c | 329 | unsigned int idx; |
00db8189 AF |
330 | |
331 | /* Sanitize settings based on PHY capabilities */ | |
332 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 333 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 AF |
334 | |
335 | idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), | |
336 | features); | |
337 | ||
338 | phydev->speed = settings[idx].speed; | |
339 | phydev->duplex = settings[idx].duplex; | |
340 | } | |
00db8189 | 341 | |
b3df0da8 RD |
342 | /** |
343 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
344 | * @phydev: target phy_device struct | |
345 | * @cmd: ethtool_cmd | |
00db8189 AF |
346 | * |
347 | * A few notes about parameter checking: | |
348 | * - We don't set port or transceiver, so we don't care what they | |
349 | * were set to. | |
350 | * - phy_start_aneg() will make sure forced settings are sane, and | |
351 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 352 | * care if ethtool tries to give us bad values. |
00db8189 AF |
353 | */ |
354 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
355 | { | |
25db0338 DD |
356 | u32 speed = ethtool_cmd_speed(cmd); |
357 | ||
e5a03bfd | 358 | if (cmd->phy_address != phydev->mdio.addr) |
00db8189 AF |
359 | return -EINVAL; |
360 | ||
2f53e904 | 361 | /* We make sure that we don't pass unsupported values in to the PHY */ |
00db8189 AF |
362 | cmd->advertising &= phydev->supported; |
363 | ||
364 | /* Verify the settings we care about. */ | |
365 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
366 | return -EINVAL; | |
367 | ||
368 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
369 | return -EINVAL; | |
370 | ||
8e95a202 | 371 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
372 | ((speed != SPEED_1000 && |
373 | speed != SPEED_100 && | |
374 | speed != SPEED_10) || | |
8e95a202 JP |
375 | (cmd->duplex != DUPLEX_HALF && |
376 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
377 | return -EINVAL; |
378 | ||
379 | phydev->autoneg = cmd->autoneg; | |
380 | ||
25db0338 | 381 | phydev->speed = speed; |
00db8189 AF |
382 | |
383 | phydev->advertising = cmd->advertising; | |
384 | ||
385 | if (AUTONEG_ENABLE == cmd->autoneg) | |
386 | phydev->advertising |= ADVERTISED_Autoneg; | |
387 | else | |
388 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
389 | ||
390 | phydev->duplex = cmd->duplex; | |
391 | ||
634ec36c DT |
392 | phydev->mdix = cmd->eth_tp_mdix_ctrl; |
393 | ||
00db8189 AF |
394 | /* Restart the PHY */ |
395 | phy_start_aneg(phydev); | |
396 | ||
397 | return 0; | |
398 | } | |
9f6d55d0 | 399 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 | 400 | |
2d55173e PR |
401 | int phy_ethtool_ksettings_set(struct phy_device *phydev, |
402 | const struct ethtool_link_ksettings *cmd) | |
403 | { | |
404 | u8 autoneg = cmd->base.autoneg; | |
405 | u8 duplex = cmd->base.duplex; | |
406 | u32 speed = cmd->base.speed; | |
407 | u32 advertising; | |
408 | ||
409 | if (cmd->base.phy_address != phydev->mdio.addr) | |
410 | return -EINVAL; | |
411 | ||
412 | ethtool_convert_link_mode_to_legacy_u32(&advertising, | |
413 | cmd->link_modes.advertising); | |
414 | ||
415 | /* We make sure that we don't pass unsupported values in to the PHY */ | |
416 | advertising &= phydev->supported; | |
417 | ||
418 | /* Verify the settings we care about. */ | |
419 | if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) | |
420 | return -EINVAL; | |
421 | ||
422 | if (autoneg == AUTONEG_ENABLE && advertising == 0) | |
423 | return -EINVAL; | |
424 | ||
425 | if (autoneg == AUTONEG_DISABLE && | |
426 | ((speed != SPEED_1000 && | |
427 | speed != SPEED_100 && | |
428 | speed != SPEED_10) || | |
429 | (duplex != DUPLEX_HALF && | |
430 | duplex != DUPLEX_FULL))) | |
431 | return -EINVAL; | |
432 | ||
433 | phydev->autoneg = autoneg; | |
434 | ||
435 | phydev->speed = speed; | |
436 | ||
437 | phydev->advertising = advertising; | |
438 | ||
439 | if (autoneg == AUTONEG_ENABLE) | |
440 | phydev->advertising |= ADVERTISED_Autoneg; | |
441 | else | |
442 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
443 | ||
444 | phydev->duplex = duplex; | |
445 | ||
446 | phydev->mdix = cmd->base.eth_tp_mdix_ctrl; | |
447 | ||
448 | /* Restart the PHY */ | |
449 | phy_start_aneg(phydev); | |
450 | ||
451 | return 0; | |
452 | } | |
453 | EXPORT_SYMBOL(phy_ethtool_ksettings_set); | |
454 | ||
00db8189 AF |
455 | int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) |
456 | { | |
457 | cmd->supported = phydev->supported; | |
458 | ||
459 | cmd->advertising = phydev->advertising; | |
114002bc | 460 | cmd->lp_advertising = phydev->lp_advertising; |
00db8189 | 461 | |
70739497 | 462 | ethtool_cmd_speed_set(cmd, phydev->speed); |
00db8189 | 463 | cmd->duplex = phydev->duplex; |
c88838ce FF |
464 | if (phydev->interface == PHY_INTERFACE_MODE_MOCA) |
465 | cmd->port = PORT_BNC; | |
466 | else | |
467 | cmd->port = PORT_MII; | |
e5a03bfd | 468 | cmd->phy_address = phydev->mdio.addr; |
4284b6a5 FF |
469 | cmd->transceiver = phy_is_internal(phydev) ? |
470 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
00db8189 | 471 | cmd->autoneg = phydev->autoneg; |
239aa55b | 472 | cmd->eth_tp_mdix_ctrl = phydev->mdix; |
00db8189 AF |
473 | |
474 | return 0; | |
475 | } | |
9f6d55d0 | 476 | EXPORT_SYMBOL(phy_ethtool_gset); |
2d55173e PR |
477 | |
478 | int phy_ethtool_ksettings_get(struct phy_device *phydev, | |
479 | struct ethtool_link_ksettings *cmd) | |
480 | { | |
481 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, | |
482 | phydev->supported); | |
483 | ||
484 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, | |
485 | phydev->advertising); | |
486 | ||
487 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising, | |
488 | phydev->lp_advertising); | |
489 | ||
490 | cmd->base.speed = phydev->speed; | |
491 | cmd->base.duplex = phydev->duplex; | |
492 | if (phydev->interface == PHY_INTERFACE_MODE_MOCA) | |
493 | cmd->base.port = PORT_BNC; | |
494 | else | |
495 | cmd->base.port = PORT_MII; | |
496 | ||
497 | cmd->base.phy_address = phydev->mdio.addr; | |
498 | cmd->base.autoneg = phydev->autoneg; | |
499 | cmd->base.eth_tp_mdix_ctrl = phydev->mdix; | |
500 | ||
501 | return 0; | |
502 | } | |
503 | EXPORT_SYMBOL(phy_ethtool_ksettings_get); | |
00db8189 | 504 | |
b3df0da8 RD |
505 | /** |
506 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
507 | * @phydev: the phy_device struct | |
00c7d920 | 508 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
509 | * @cmd: ioctl cmd to execute |
510 | * | |
511 | * Note that this function is currently incompatible with the | |
00db8189 | 512 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 513 | * current state. Use at own risk. |
00db8189 | 514 | */ |
2f53e904 | 515 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 516 | { |
28b04113 | 517 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 | 518 | u16 val = mii_data->val_in; |
79ce0477 | 519 | bool change_autoneg = false; |
00db8189 AF |
520 | |
521 | switch (cmd) { | |
522 | case SIOCGMIIPHY: | |
e5a03bfd | 523 | mii_data->phy_id = phydev->mdio.addr; |
c6d6a511 LB |
524 | /* fall through */ |
525 | ||
00db8189 | 526 | case SIOCGMIIREG: |
e5a03bfd AL |
527 | mii_data->val_out = mdiobus_read(phydev->mdio.bus, |
528 | mii_data->phy_id, | |
af1dc13e | 529 | mii_data->reg_num); |
e62a768f | 530 | return 0; |
00db8189 AF |
531 | |
532 | case SIOCSMIIREG: | |
e5a03bfd | 533 | if (mii_data->phy_id == phydev->mdio.addr) { |
e109374f | 534 | switch (mii_data->reg_num) { |
00db8189 | 535 | case MII_BMCR: |
79ce0477 BH |
536 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { |
537 | if (phydev->autoneg == AUTONEG_ENABLE) | |
538 | change_autoneg = true; | |
00db8189 | 539 | phydev->autoneg = AUTONEG_DISABLE; |
79ce0477 BH |
540 | if (val & BMCR_FULLDPLX) |
541 | phydev->duplex = DUPLEX_FULL; | |
542 | else | |
543 | phydev->duplex = DUPLEX_HALF; | |
544 | if (val & BMCR_SPEED1000) | |
545 | phydev->speed = SPEED_1000; | |
546 | else if (val & BMCR_SPEED100) | |
547 | phydev->speed = SPEED_100; | |
548 | else phydev->speed = SPEED_10; | |
549 | } | |
550 | else { | |
551 | if (phydev->autoneg == AUTONEG_DISABLE) | |
552 | change_autoneg = true; | |
00db8189 | 553 | phydev->autoneg = AUTONEG_ENABLE; |
79ce0477 | 554 | } |
00db8189 AF |
555 | break; |
556 | case MII_ADVERTISE: | |
79ce0477 BH |
557 | phydev->advertising = mii_adv_to_ethtool_adv_t(val); |
558 | change_autoneg = true; | |
00db8189 AF |
559 | break; |
560 | default: | |
561 | /* do nothing */ | |
562 | break; | |
563 | } | |
564 | } | |
565 | ||
e5a03bfd | 566 | mdiobus_write(phydev->mdio.bus, mii_data->phy_id, |
af1dc13e PK |
567 | mii_data->reg_num, val); |
568 | ||
e5a03bfd | 569 | if (mii_data->phy_id == phydev->mdio.addr && |
cf18b778 | 570 | mii_data->reg_num == MII_BMCR && |
2613f95f | 571 | val & BMCR_RESET) |
e62a768f | 572 | return phy_init_hw(phydev); |
79ce0477 BH |
573 | |
574 | if (change_autoneg) | |
575 | return phy_start_aneg(phydev); | |
576 | ||
e62a768f | 577 | return 0; |
dda93b48 | 578 | |
c1f19b51 RC |
579 | case SIOCSHWTSTAMP: |
580 | if (phydev->drv->hwtstamp) | |
581 | return phydev->drv->hwtstamp(phydev, ifr); | |
582 | /* fall through */ | |
583 | ||
dda93b48 | 584 | default: |
c6d6a511 | 585 | return -EOPNOTSUPP; |
00db8189 | 586 | } |
00db8189 | 587 | } |
680e9fe9 | 588 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 589 | |
b3df0da8 RD |
590 | /** |
591 | * phy_start_aneg - start auto-negotiation for this PHY device | |
592 | * @phydev: the phy_device struct | |
e1393456 | 593 | * |
b3df0da8 RD |
594 | * Description: Sanitizes the settings (if we're not autonegotiating |
595 | * them), and then calls the driver's config_aneg function. | |
596 | * If the PHYCONTROL Layer is operating, we change the state to | |
597 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 AF |
598 | */ |
599 | int phy_start_aneg(struct phy_device *phydev) | |
600 | { | |
601 | int err; | |
602 | ||
35b5f6b1 | 603 | mutex_lock(&phydev->lock); |
e1393456 AF |
604 | |
605 | if (AUTONEG_DISABLE == phydev->autoneg) | |
606 | phy_sanitize_settings(phydev); | |
607 | ||
9b3320ef BH |
608 | /* Invalidate LP advertising flags */ |
609 | phydev->lp_advertising = 0; | |
610 | ||
e1393456 | 611 | err = phydev->drv->config_aneg(phydev); |
e1393456 AF |
612 | if (err < 0) |
613 | goto out_unlock; | |
614 | ||
615 | if (phydev->state != PHY_HALTED) { | |
616 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
617 | phydev->state = PHY_AN; | |
618 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
619 | } else { | |
620 | phydev->state = PHY_FORCING; | |
621 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
622 | } | |
623 | } | |
624 | ||
625 | out_unlock: | |
35b5f6b1 | 626 | mutex_unlock(&phydev->lock); |
e1393456 AF |
627 | return err; |
628 | } | |
629 | EXPORT_SYMBOL(phy_start_aneg); | |
630 | ||
b3df0da8 RD |
631 | /** |
632 | * phy_start_machine - start PHY state machine tracking | |
633 | * @phydev: the phy_device struct | |
00db8189 | 634 | * |
b3df0da8 | 635 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
636 | * which tracks whether the PHY is starting up, negotiating, |
637 | * etc. This function starts the timer which tracks the state | |
29935aeb SS |
638 | * of the PHY. If you want to maintain your own state machine, |
639 | * do not call this function. | |
b3df0da8 | 640 | */ |
29935aeb | 641 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 642 | { |
bbb47bde | 643 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
644 | } |
645 | ||
3c293f4e AL |
646 | /** |
647 | * phy_trigger_machine - trigger the state machine to run | |
648 | * | |
649 | * @phydev: the phy_device struct | |
650 | * | |
651 | * Description: There has been a change in state which requires that the | |
652 | * state machine runs. | |
653 | */ | |
654 | ||
655 | static void phy_trigger_machine(struct phy_device *phydev) | |
656 | { | |
657 | cancel_delayed_work_sync(&phydev->state_queue); | |
658 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); | |
659 | } | |
660 | ||
b3df0da8 RD |
661 | /** |
662 | * phy_stop_machine - stop the PHY state machine tracking | |
663 | * @phydev: target phy_device struct | |
00db8189 | 664 | * |
b3df0da8 | 665 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 666 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
667 | * phy_detach. |
668 | */ | |
669 | void phy_stop_machine(struct phy_device *phydev) | |
670 | { | |
a390d1f3 | 671 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 672 | |
35b5f6b1 | 673 | mutex_lock(&phydev->lock); |
00db8189 AF |
674 | if (phydev->state > PHY_UP) |
675 | phydev->state = PHY_UP; | |
35b5f6b1 | 676 | mutex_unlock(&phydev->lock); |
00db8189 AF |
677 | } |
678 | ||
b3df0da8 RD |
679 | /** |
680 | * phy_error - enter HALTED state for this PHY device | |
681 | * @phydev: target phy_device struct | |
00db8189 AF |
682 | * |
683 | * Moves the PHY to the HALTED state in response to a read | |
684 | * or write error, and tells the controller the link is down. | |
685 | * Must not be called from interrupt context, or while the | |
686 | * phydev->lock is held. | |
687 | */ | |
9b9a8bfc | 688 | static void phy_error(struct phy_device *phydev) |
00db8189 | 689 | { |
35b5f6b1 | 690 | mutex_lock(&phydev->lock); |
00db8189 | 691 | phydev->state = PHY_HALTED; |
35b5f6b1 | 692 | mutex_unlock(&phydev->lock); |
3c293f4e AL |
693 | |
694 | phy_trigger_machine(phydev); | |
00db8189 AF |
695 | } |
696 | ||
b3df0da8 RD |
697 | /** |
698 | * phy_interrupt - PHY interrupt handler | |
699 | * @irq: interrupt line | |
700 | * @phy_dat: phy_device pointer | |
e1393456 | 701 | * |
b3df0da8 | 702 | * Description: When a PHY interrupt occurs, the handler disables |
664fcf12 | 703 | * interrupts, and uses phy_change to handle the interrupt. |
e1393456 | 704 | */ |
7d12e780 | 705 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
706 | { |
707 | struct phy_device *phydev = phy_dat; | |
708 | ||
3c3070d7 MR |
709 | if (PHY_HALTED == phydev->state) |
710 | return IRQ_NONE; /* It can't be ours. */ | |
711 | ||
e1393456 | 712 | disable_irq_nosync(irq); |
0ac49527 | 713 | atomic_inc(&phydev->irq_disable); |
e1393456 | 714 | |
664fcf12 | 715 | phy_change(phydev); |
e1393456 AF |
716 | |
717 | return IRQ_HANDLED; | |
718 | } | |
719 | ||
b3df0da8 RD |
720 | /** |
721 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
722 | * @phydev: target phy_device struct | |
723 | */ | |
89ff05ec | 724 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 725 | { |
553fe92b | 726 | int err = phy_clear_interrupt(phydev); |
00db8189 | 727 | |
e1393456 AF |
728 | if (err < 0) |
729 | return err; | |
00db8189 | 730 | |
553fe92b | 731 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 732 | } |
00db8189 | 733 | |
b3df0da8 RD |
734 | /** |
735 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
736 | * @phydev: target phy_device struct | |
737 | */ | |
89ff05ec | 738 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
739 | { |
740 | int err; | |
741 | ||
742 | /* Disable PHY interrupts */ | |
743 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
00db8189 AF |
744 | if (err) |
745 | goto phy_err; | |
746 | ||
747 | /* Clear the interrupt */ | |
748 | err = phy_clear_interrupt(phydev); | |
00db8189 AF |
749 | if (err) |
750 | goto phy_err; | |
751 | ||
752 | return 0; | |
753 | ||
754 | phy_err: | |
755 | phy_error(phydev); | |
756 | ||
757 | return err; | |
758 | } | |
e1393456 | 759 | |
b3df0da8 RD |
760 | /** |
761 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
762 | * @phydev: target phy_device struct | |
e1393456 | 763 | * |
b3df0da8 RD |
764 | * Description: Request the interrupt for the given PHY. |
765 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 766 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 767 | * This should only be called with a valid IRQ number. |
b3df0da8 | 768 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
769 | */ |
770 | int phy_start_interrupts(struct phy_device *phydev) | |
771 | { | |
0ac49527 | 772 | atomic_set(&phydev->irq_disable, 0); |
c974bdbc AL |
773 | if (request_threaded_irq(phydev->irq, NULL, phy_interrupt, |
774 | IRQF_ONESHOT | IRQF_SHARED, | |
ae0219cb | 775 | phydev_name(phydev), phydev) < 0) { |
8d242488 | 776 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
e5a03bfd | 777 | phydev->mdio.bus->name, phydev->irq); |
e1393456 AF |
778 | phydev->irq = PHY_POLL; |
779 | return 0; | |
780 | } | |
781 | ||
e62a768f | 782 | return phy_enable_interrupts(phydev); |
e1393456 AF |
783 | } |
784 | EXPORT_SYMBOL(phy_start_interrupts); | |
785 | ||
b3df0da8 RD |
786 | /** |
787 | * phy_stop_interrupts - disable interrupts from a PHY device | |
788 | * @phydev: target phy_device struct | |
789 | */ | |
e1393456 AF |
790 | int phy_stop_interrupts(struct phy_device *phydev) |
791 | { | |
553fe92b | 792 | int err = phy_disable_interrupts(phydev); |
e1393456 AF |
793 | |
794 | if (err) | |
795 | phy_error(phydev); | |
796 | ||
0ac49527 MR |
797 | free_irq(phydev->irq, phydev); |
798 | ||
2f53e904 | 799 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
800 | * been left unbalanced from phy_interrupt() and enable_irq() |
801 | * has to be called so that other devices on the line work. | |
802 | */ | |
803 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
804 | enable_irq(phydev->irq); | |
e1393456 AF |
805 | |
806 | return err; | |
807 | } | |
808 | EXPORT_SYMBOL(phy_stop_interrupts); | |
809 | ||
b3df0da8 | 810 | /** |
664fcf12 AL |
811 | * phy_change - Called by the phy_interrupt to handle PHY changes |
812 | * @phydev: phy_device struct that interrupted | |
b3df0da8 | 813 | */ |
664fcf12 | 814 | void phy_change(struct phy_device *phydev) |
e1393456 | 815 | { |
deccd16f FF |
816 | if (phy_interrupt_is_valid(phydev)) { |
817 | if (phydev->drv->did_interrupt && | |
818 | !phydev->drv->did_interrupt(phydev)) | |
819 | goto ignore; | |
a8729eb3 | 820 | |
deccd16f FF |
821 | if (phy_disable_interrupts(phydev)) |
822 | goto phy_err; | |
823 | } | |
e1393456 | 824 | |
35b5f6b1 | 825 | mutex_lock(&phydev->lock); |
e1393456 AF |
826 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
827 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 828 | mutex_unlock(&phydev->lock); |
e1393456 | 829 | |
deccd16f FF |
830 | if (phy_interrupt_is_valid(phydev)) { |
831 | atomic_dec(&phydev->irq_disable); | |
832 | enable_irq(phydev->irq); | |
e1393456 | 833 | |
deccd16f FF |
834 | /* Reenable interrupts */ |
835 | if (PHY_HALTED != phydev->state && | |
836 | phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) | |
837 | goto irq_enable_err; | |
838 | } | |
e1393456 | 839 | |
a390d1f3 | 840 | /* reschedule state queue work to run as soon as possible */ |
3c293f4e | 841 | phy_trigger_machine(phydev); |
e1393456 AF |
842 | return; |
843 | ||
a8729eb3 AG |
844 | ignore: |
845 | atomic_dec(&phydev->irq_disable); | |
846 | enable_irq(phydev->irq); | |
847 | return; | |
848 | ||
e1393456 AF |
849 | irq_enable_err: |
850 | disable_irq(phydev->irq); | |
0ac49527 | 851 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
852 | phy_err: |
853 | phy_error(phydev); | |
854 | } | |
855 | ||
664fcf12 AL |
856 | /** |
857 | * phy_change_work - Scheduled by the phy_mac_interrupt to handle PHY changes | |
858 | * @work: work_struct that describes the work to be done | |
859 | */ | |
860 | void phy_change_work(struct work_struct *work) | |
861 | { | |
862 | struct phy_device *phydev = | |
863 | container_of(work, struct phy_device, phy_queue); | |
864 | ||
865 | phy_change(phydev); | |
866 | } | |
867 | ||
b3df0da8 RD |
868 | /** |
869 | * phy_stop - Bring down the PHY link, and stop checking the status | |
870 | * @phydev: target phy_device struct | |
871 | */ | |
e1393456 AF |
872 | void phy_stop(struct phy_device *phydev) |
873 | { | |
35b5f6b1 | 874 | mutex_lock(&phydev->lock); |
e1393456 AF |
875 | |
876 | if (PHY_HALTED == phydev->state) | |
877 | goto out_unlock; | |
878 | ||
2c7b4921 | 879 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
880 | /* Disable PHY Interrupts */ |
881 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 882 | |
3c3070d7 MR |
883 | /* Clear any pending interrupts */ |
884 | phy_clear_interrupt(phydev); | |
885 | } | |
e1393456 | 886 | |
6daf6531 MR |
887 | phydev->state = PHY_HALTED; |
888 | ||
e1393456 | 889 | out_unlock: |
35b5f6b1 | 890 | mutex_unlock(&phydev->lock); |
3c3070d7 | 891 | |
2f53e904 | 892 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
893 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
894 | * will not reenable interrupts. | |
895 | */ | |
e1393456 | 896 | } |
2f53e904 | 897 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 898 | |
b3df0da8 RD |
899 | /** |
900 | * phy_start - start or restart a PHY device | |
901 | * @phydev: target phy_device struct | |
e1393456 | 902 | * |
b3df0da8 | 903 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
904 | * handle PHY-related work. Used during startup to start the |
905 | * PHY, and after a call to phy_stop() to resume operation. | |
906 | * Also used to indicate the MDIO bus has cleared an error | |
907 | * condition. | |
908 | */ | |
909 | void phy_start(struct phy_device *phydev) | |
910 | { | |
c15e10e7 TB |
911 | bool do_resume = false; |
912 | int err = 0; | |
913 | ||
35b5f6b1 | 914 | mutex_lock(&phydev->lock); |
e1393456 AF |
915 | |
916 | switch (phydev->state) { | |
e109374f FF |
917 | case PHY_STARTING: |
918 | phydev->state = PHY_PENDING; | |
919 | break; | |
920 | case PHY_READY: | |
921 | phydev->state = PHY_UP; | |
922 | break; | |
923 | case PHY_HALTED: | |
c15e10e7 | 924 | /* make sure interrupts are re-enabled for the PHY */ |
84a527a4 SX |
925 | if (phydev->irq != PHY_POLL) { |
926 | err = phy_enable_interrupts(phydev); | |
927 | if (err < 0) | |
928 | break; | |
929 | } | |
c15e10e7 | 930 | |
e109374f | 931 | phydev->state = PHY_RESUMING; |
c15e10e7 TB |
932 | do_resume = true; |
933 | break; | |
e109374f FF |
934 | default: |
935 | break; | |
e1393456 | 936 | } |
35b5f6b1 | 937 | mutex_unlock(&phydev->lock); |
c15e10e7 TB |
938 | |
939 | /* if phy was suspended, bring the physical link up again */ | |
940 | if (do_resume) | |
941 | phy_resume(phydev); | |
3c293f4e AL |
942 | |
943 | phy_trigger_machine(phydev); | |
e1393456 | 944 | } |
e1393456 | 945 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 946 | |
61a17965 ZB |
947 | static void phy_adjust_link(struct phy_device *phydev) |
948 | { | |
949 | phydev->adjust_link(phydev->attached_dev); | |
2e0bc452 | 950 | phy_led_trigger_change_speed(phydev); |
61a17965 ZB |
951 | } |
952 | ||
35b5f6b1 NC |
953 | /** |
954 | * phy_state_machine - Handle the state machine | |
955 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 956 | */ |
4f9c85a1 | 957 | void phy_state_machine(struct work_struct *work) |
00db8189 | 958 | { |
bf6aede7 | 959 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 960 | struct phy_device *phydev = |
a390d1f3 | 961 | container_of(dwork, struct phy_device, state_queue); |
c15e10e7 | 962 | bool needs_aneg = false, do_suspend = false; |
3e2186e0 | 963 | enum phy_state old_state; |
00db8189 | 964 | int err = 0; |
11e122cb | 965 | int old_link; |
00db8189 | 966 | |
35b5f6b1 | 967 | mutex_lock(&phydev->lock); |
00db8189 | 968 | |
3e2186e0 FF |
969 | old_state = phydev->state; |
970 | ||
2b8f2a28 DM |
971 | if (phydev->drv->link_change_notify) |
972 | phydev->drv->link_change_notify(phydev); | |
973 | ||
e109374f FF |
974 | switch (phydev->state) { |
975 | case PHY_DOWN: | |
976 | case PHY_STARTING: | |
977 | case PHY_READY: | |
978 | case PHY_PENDING: | |
979 | break; | |
980 | case PHY_UP: | |
6e14a5ee | 981 | needs_aneg = true; |
00db8189 | 982 | |
e109374f FF |
983 | phydev->link_timeout = PHY_AN_TIMEOUT; |
984 | ||
985 | break; | |
986 | case PHY_AN: | |
987 | err = phy_read_status(phydev); | |
e109374f | 988 | if (err < 0) |
00db8189 | 989 | break; |
6b655529 | 990 | |
2f53e904 | 991 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
992 | if (!phydev->link) { |
993 | phydev->state = PHY_NOLINK; | |
994 | netif_carrier_off(phydev->attached_dev); | |
61a17965 | 995 | phy_adjust_link(phydev); |
e109374f FF |
996 | break; |
997 | } | |
6b655529 | 998 | |
2f53e904 | 999 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
1000 | err = phy_aneg_done(phydev); |
1001 | if (err < 0) | |
1002 | break; | |
6b655529 | 1003 | |
e109374f FF |
1004 | /* If AN is done, we're running */ |
1005 | if (err > 0) { | |
1006 | phydev->state = PHY_RUNNING; | |
1007 | netif_carrier_on(phydev->attached_dev); | |
61a17965 | 1008 | phy_adjust_link(phydev); |
00db8189 | 1009 | |
fa8cddaf | 1010 | } else if (0 == phydev->link_timeout--) |
6e14a5ee | 1011 | needs_aneg = true; |
e109374f FF |
1012 | break; |
1013 | case PHY_NOLINK: | |
321beec5 AL |
1014 | if (phy_interrupt_is_valid(phydev)) |
1015 | break; | |
1016 | ||
e109374f | 1017 | err = phy_read_status(phydev); |
e109374f | 1018 | if (err) |
00db8189 | 1019 | break; |
00db8189 | 1020 | |
e109374f | 1021 | if (phydev->link) { |
e46e08b8 BK |
1022 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1023 | err = phy_aneg_done(phydev); | |
1024 | if (err < 0) | |
1025 | break; | |
1026 | ||
1027 | if (!err) { | |
1028 | phydev->state = PHY_AN; | |
1029 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
1030 | break; | |
1031 | } | |
1032 | } | |
e109374f FF |
1033 | phydev->state = PHY_RUNNING; |
1034 | netif_carrier_on(phydev->attached_dev); | |
61a17965 | 1035 | phy_adjust_link(phydev); |
e109374f FF |
1036 | } |
1037 | break; | |
1038 | case PHY_FORCING: | |
1039 | err = genphy_update_link(phydev); | |
e109374f | 1040 | if (err) |
00db8189 | 1041 | break; |
00db8189 | 1042 | |
e109374f FF |
1043 | if (phydev->link) { |
1044 | phydev->state = PHY_RUNNING; | |
1045 | netif_carrier_on(phydev->attached_dev); | |
1046 | } else { | |
1047 | if (0 == phydev->link_timeout--) | |
6e14a5ee | 1048 | needs_aneg = true; |
e109374f | 1049 | } |
00db8189 | 1050 | |
61a17965 | 1051 | phy_adjust_link(phydev); |
e109374f FF |
1052 | break; |
1053 | case PHY_RUNNING: | |
d5c3d846 FF |
1054 | /* Only register a CHANGE if we are polling and link changed |
1055 | * since latest checking. | |
e109374f | 1056 | */ |
d5c3d846 | 1057 | if (phydev->irq == PHY_POLL) { |
11e122cb SX |
1058 | old_link = phydev->link; |
1059 | err = phy_read_status(phydev); | |
1060 | if (err) | |
1061 | break; | |
1062 | ||
1063 | if (old_link != phydev->link) | |
1064 | phydev->state = PHY_CHANGELINK; | |
1065 | } | |
e109374f FF |
1066 | break; |
1067 | case PHY_CHANGELINK: | |
1068 | err = phy_read_status(phydev); | |
e109374f | 1069 | if (err) |
00db8189 | 1070 | break; |
00db8189 | 1071 | |
e109374f FF |
1072 | if (phydev->link) { |
1073 | phydev->state = PHY_RUNNING; | |
1074 | netif_carrier_on(phydev->attached_dev); | |
1075 | } else { | |
1076 | phydev->state = PHY_NOLINK; | |
1077 | netif_carrier_off(phydev->attached_dev); | |
1078 | } | |
00db8189 | 1079 | |
61a17965 | 1080 | phy_adjust_link(phydev); |
00db8189 | 1081 | |
e109374f FF |
1082 | if (phy_interrupt_is_valid(phydev)) |
1083 | err = phy_config_interrupt(phydev, | |
2f53e904 | 1084 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
1085 | break; |
1086 | case PHY_HALTED: | |
1087 | if (phydev->link) { | |
1088 | phydev->link = 0; | |
1089 | netif_carrier_off(phydev->attached_dev); | |
61a17965 | 1090 | phy_adjust_link(phydev); |
6e14a5ee | 1091 | do_suspend = true; |
e109374f FF |
1092 | } |
1093 | break; | |
1094 | case PHY_RESUMING: | |
e109374f FF |
1095 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1096 | err = phy_aneg_done(phydev); | |
1097 | if (err < 0) | |
00db8189 AF |
1098 | break; |
1099 | ||
e109374f | 1100 | /* err > 0 if AN is done. |
2f53e904 SS |
1101 | * Otherwise, it's 0, and we're still waiting for AN |
1102 | */ | |
e109374f | 1103 | if (err > 0) { |
42caa074 WF |
1104 | err = phy_read_status(phydev); |
1105 | if (err) | |
1106 | break; | |
1107 | ||
1108 | if (phydev->link) { | |
1109 | phydev->state = PHY_RUNNING; | |
1110 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 1111 | } else { |
42caa074 | 1112 | phydev->state = PHY_NOLINK; |
2f53e904 | 1113 | } |
61a17965 | 1114 | phy_adjust_link(phydev); |
e109374f FF |
1115 | } else { |
1116 | phydev->state = PHY_AN; | |
1117 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 1118 | } |
e109374f FF |
1119 | } else { |
1120 | err = phy_read_status(phydev); | |
1121 | if (err) | |
1122 | break; | |
1123 | ||
1124 | if (phydev->link) { | |
1125 | phydev->state = PHY_RUNNING; | |
1126 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 1127 | } else { |
e109374f | 1128 | phydev->state = PHY_NOLINK; |
2f53e904 | 1129 | } |
61a17965 | 1130 | phy_adjust_link(phydev); |
e109374f FF |
1131 | } |
1132 | break; | |
00db8189 AF |
1133 | } |
1134 | ||
35b5f6b1 | 1135 | mutex_unlock(&phydev->lock); |
00db8189 AF |
1136 | |
1137 | if (needs_aneg) | |
1138 | err = phy_start_aneg(phydev); | |
6e14a5ee | 1139 | else if (do_suspend) |
be9dad1f SH |
1140 | phy_suspend(phydev); |
1141 | ||
00db8189 AF |
1142 | if (err < 0) |
1143 | phy_error(phydev); | |
1144 | ||
72ba48be AL |
1145 | phydev_dbg(phydev, "PHY state change %s -> %s\n", |
1146 | phy_state_to_str(old_state), | |
1147 | phy_state_to_str(phydev->state)); | |
3e2186e0 | 1148 | |
d5c3d846 FF |
1149 | /* Only re-schedule a PHY state machine change if we are polling the |
1150 | * PHY, if PHY_IGNORE_INTERRUPT is set, then we will be moving | |
1151 | * between states from phy_mac_interrupt() | |
1152 | */ | |
1153 | if (phydev->irq == PHY_POLL) | |
1154 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, | |
1155 | PHY_STATE_TIME * HZ); | |
35b5f6b1 | 1156 | } |
a59a4d19 | 1157 | |
664fcf12 AL |
1158 | /** |
1159 | * phy_mac_interrupt - MAC says the link has changed | |
1160 | * @phydev: phy_device struct with changed link | |
1161 | * @new_link: Link is Up/Down. | |
1162 | * | |
1163 | * Description: The MAC layer is able indicate there has been a change | |
1164 | * in the PHY link status. Set the new link status, and trigger the | |
1165 | * state machine, work a work queue. | |
1166 | */ | |
5ea94e76 FF |
1167 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
1168 | { | |
5ea94e76 | 1169 | phydev->link = new_link; |
deccd16f FF |
1170 | |
1171 | /* Trigger a state machine change */ | |
1172 | queue_work(system_power_efficient_wq, &phydev->phy_queue); | |
5ea94e76 FF |
1173 | } |
1174 | EXPORT_SYMBOL(phy_mac_interrupt); | |
1175 | ||
a59a4d19 GC |
1176 | static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad, |
1177 | int addr) | |
1178 | { | |
1179 | /* Write the desired MMD Devad */ | |
1180 | bus->write(bus, addr, MII_MMD_CTRL, devad); | |
1181 | ||
1182 | /* Write the desired MMD register address */ | |
1183 | bus->write(bus, addr, MII_MMD_DATA, prtad); | |
1184 | ||
1185 | /* Select the Function : DATA with no post increment */ | |
1186 | bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
1187 | } | |
1188 | ||
1189 | /** | |
1190 | * phy_read_mmd_indirect - reads data from the MMD registers | |
0c1d77df | 1191 | * @phydev: The PHY device bus |
a59a4d19 GC |
1192 | * @prtad: MMD Address |
1193 | * @devad: MMD DEVAD | |
a59a4d19 GC |
1194 | * |
1195 | * Description: it reads data from the MMD registers (clause 22 to access to | |
1196 | * clause 45) of the specified phy address. | |
1197 | * To read these register we have: | |
1198 | * 1) Write reg 13 // DEVAD | |
1199 | * 2) Write reg 14 // MMD Address | |
1200 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
1201 | * 3) Read reg 14 // Read MMD data | |
1202 | */ | |
053e7e16 | 1203 | int phy_read_mmd_indirect(struct phy_device *phydev, int prtad, int devad) |
a59a4d19 | 1204 | { |
0c1d77df | 1205 | struct phy_driver *phydrv = phydev->drv; |
e5a03bfd | 1206 | int addr = phydev->mdio.addr; |
0c1d77df | 1207 | int value = -1; |
a59a4d19 | 1208 | |
ef899c07 | 1209 | if (!phydrv->read_mmd_indirect) { |
e5a03bfd | 1210 | struct mii_bus *bus = phydev->mdio.bus; |
05a7f582 RK |
1211 | |
1212 | mutex_lock(&bus->mdio_lock); | |
1213 | mmd_phy_indirect(bus, prtad, devad, addr); | |
0c1d77df VB |
1214 | |
1215 | /* Read the content of the MMD's selected register */ | |
05a7f582 RK |
1216 | value = bus->read(bus, addr, MII_MMD_DATA); |
1217 | mutex_unlock(&bus->mdio_lock); | |
0c1d77df VB |
1218 | } else { |
1219 | value = phydrv->read_mmd_indirect(phydev, prtad, devad, addr); | |
1220 | } | |
1221 | return value; | |
a59a4d19 | 1222 | } |
66ce7fb9 | 1223 | EXPORT_SYMBOL(phy_read_mmd_indirect); |
a59a4d19 GC |
1224 | |
1225 | /** | |
1226 | * phy_write_mmd_indirect - writes data to the MMD registers | |
0c1d77df | 1227 | * @phydev: The PHY device |
a59a4d19 GC |
1228 | * @prtad: MMD Address |
1229 | * @devad: MMD DEVAD | |
a59a4d19 GC |
1230 | * @data: data to write in the MMD register |
1231 | * | |
1232 | * Description: Write data from the MMD registers of the specified | |
1233 | * phy address. | |
1234 | * To write these register we have: | |
1235 | * 1) Write reg 13 // DEVAD | |
1236 | * 2) Write reg 14 // MMD Address | |
1237 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
1238 | * 3) Write reg 14 // Write MMD data | |
1239 | */ | |
66ce7fb9 | 1240 | void phy_write_mmd_indirect(struct phy_device *phydev, int prtad, |
053e7e16 | 1241 | int devad, u32 data) |
a59a4d19 | 1242 | { |
0c1d77df | 1243 | struct phy_driver *phydrv = phydev->drv; |
e5a03bfd | 1244 | int addr = phydev->mdio.addr; |
a59a4d19 | 1245 | |
ef899c07 | 1246 | if (!phydrv->write_mmd_indirect) { |
e5a03bfd | 1247 | struct mii_bus *bus = phydev->mdio.bus; |
05a7f582 RK |
1248 | |
1249 | mutex_lock(&bus->mdio_lock); | |
1250 | mmd_phy_indirect(bus, prtad, devad, addr); | |
0c1d77df VB |
1251 | |
1252 | /* Write the data into MMD's selected register */ | |
05a7f582 RK |
1253 | bus->write(bus, addr, MII_MMD_DATA, data); |
1254 | mutex_unlock(&bus->mdio_lock); | |
0c1d77df VB |
1255 | } else { |
1256 | phydrv->write_mmd_indirect(phydev, prtad, devad, addr, data); | |
1257 | } | |
a59a4d19 | 1258 | } |
66ce7fb9 | 1259 | EXPORT_SYMBOL(phy_write_mmd_indirect); |
a59a4d19 | 1260 | |
a59a4d19 GC |
1261 | /** |
1262 | * phy_init_eee - init and check the EEE feature | |
1263 | * @phydev: target phy_device struct | |
1264 | * @clk_stop_enable: PHY may stop the clock during LPI | |
1265 | * | |
1266 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
1267 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
1268 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
1269 | * bit if required. | |
1270 | */ | |
1271 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
1272 | { | |
a59a4d19 GC |
1273 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
1274 | * Also EEE feature is active when core is operating with MII, GMII | |
7e140696 FF |
1275 | * or RGMII (all kinds). Internal PHYs are also allowed to proceed and |
1276 | * should return an error if they do not support EEE. | |
a59a4d19 GC |
1277 | */ |
1278 | if ((phydev->duplex == DUPLEX_FULL) && | |
1279 | ((phydev->interface == PHY_INTERFACE_MODE_MII) || | |
1280 | (phydev->interface == PHY_INTERFACE_MODE_GMII) || | |
32a64161 | 1281 | phy_interface_is_rgmii(phydev) || |
a9f63095 | 1282 | phy_is_internal(phydev))) { |
a59a4d19 GC |
1283 | int eee_lp, eee_cap, eee_adv; |
1284 | u32 lp, cap, adv; | |
4ae6e50c | 1285 | int status; |
a59a4d19 GC |
1286 | |
1287 | /* Read phy status to properly get the right settings */ | |
1288 | status = phy_read_status(phydev); | |
1289 | if (status) | |
1290 | return status; | |
1291 | ||
1292 | /* First check if the EEE ability is supported */ | |
0c1d77df | 1293 | eee_cap = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE, |
053e7e16 | 1294 | MDIO_MMD_PCS); |
7a4cecf7 GC |
1295 | if (eee_cap <= 0) |
1296 | goto eee_exit_err; | |
a59a4d19 | 1297 | |
b32607dd | 1298 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 1299 | if (!cap) |
7a4cecf7 | 1300 | goto eee_exit_err; |
a59a4d19 GC |
1301 | |
1302 | /* Check which link settings negotiated and verify it in | |
1303 | * the EEE advertising registers. | |
1304 | */ | |
0c1d77df | 1305 | eee_lp = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_LPABLE, |
053e7e16 | 1306 | MDIO_MMD_AN); |
7a4cecf7 GC |
1307 | if (eee_lp <= 0) |
1308 | goto eee_exit_err; | |
a59a4d19 | 1309 | |
0c1d77df | 1310 | eee_adv = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV, |
053e7e16 | 1311 | MDIO_MMD_AN); |
7a4cecf7 GC |
1312 | if (eee_adv <= 0) |
1313 | goto eee_exit_err; | |
a59a4d19 | 1314 | |
b32607dd AB |
1315 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
1316 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
54da5a8b | 1317 | if (!phy_check_valid(phydev->speed, phydev->duplex, lp & adv)) |
7a4cecf7 | 1318 | goto eee_exit_err; |
a59a4d19 GC |
1319 | |
1320 | if (clk_stop_enable) { | |
1321 | /* Configure the PHY to stop receiving xMII | |
1322 | * clock while it is signaling LPI. | |
1323 | */ | |
0c1d77df | 1324 | int val = phy_read_mmd_indirect(phydev, MDIO_CTRL1, |
053e7e16 | 1325 | MDIO_MMD_PCS); |
a59a4d19 GC |
1326 | if (val < 0) |
1327 | return val; | |
1328 | ||
1329 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
0c1d77df | 1330 | phy_write_mmd_indirect(phydev, MDIO_CTRL1, |
053e7e16 | 1331 | MDIO_MMD_PCS, val); |
a59a4d19 GC |
1332 | } |
1333 | ||
e62a768f | 1334 | return 0; /* EEE supported */ |
a59a4d19 | 1335 | } |
7a4cecf7 | 1336 | eee_exit_err: |
e62a768f | 1337 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1338 | } |
1339 | EXPORT_SYMBOL(phy_init_eee); | |
1340 | ||
1341 | /** | |
1342 | * phy_get_eee_err - report the EEE wake error count | |
1343 | * @phydev: target phy_device struct | |
1344 | * | |
1345 | * Description: it is to report the number of time where the PHY | |
1346 | * failed to complete its normal wake sequence. | |
1347 | */ | |
1348 | int phy_get_eee_err(struct phy_device *phydev) | |
1349 | { | |
053e7e16 | 1350 | return phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_WK_ERR, MDIO_MMD_PCS); |
a59a4d19 GC |
1351 | } |
1352 | EXPORT_SYMBOL(phy_get_eee_err); | |
1353 | ||
1354 | /** | |
1355 | * phy_ethtool_get_eee - get EEE supported and status | |
1356 | * @phydev: target phy_device struct | |
1357 | * @data: ethtool_eee data | |
1358 | * | |
1359 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1360 | * capabilities. | |
1361 | */ | |
1362 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1363 | { | |
1364 | int val; | |
1365 | ||
1366 | /* Get Supported EEE */ | |
053e7e16 | 1367 | val = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE, MDIO_MMD_PCS); |
a59a4d19 GC |
1368 | if (val < 0) |
1369 | return val; | |
b32607dd | 1370 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1371 | |
1372 | /* Get advertisement EEE */ | |
053e7e16 | 1373 | val = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN); |
a59a4d19 GC |
1374 | if (val < 0) |
1375 | return val; | |
b32607dd | 1376 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1377 | |
1378 | /* Get LP advertisement EEE */ | |
053e7e16 | 1379 | val = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_LPABLE, MDIO_MMD_AN); |
a59a4d19 GC |
1380 | if (val < 0) |
1381 | return val; | |
b32607dd | 1382 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1383 | |
1384 | return 0; | |
1385 | } | |
1386 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1387 | ||
1388 | /** | |
1389 | * phy_ethtool_set_eee - set EEE supported and status | |
1390 | * @phydev: target phy_device struct | |
1391 | * @data: ethtool_eee data | |
1392 | * | |
1393 | * Description: it is to program the Advertisement EEE register. | |
1394 | */ | |
1395 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1396 | { | |
553fe92b | 1397 | int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised); |
a59a4d19 | 1398 | |
d853d145 | 1399 | /* Mask prohibited EEE modes */ |
1400 | val &= ~phydev->eee_broken_modes; | |
1401 | ||
053e7e16 | 1402 | phy_write_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN, val); |
a59a4d19 GC |
1403 | |
1404 | return 0; | |
1405 | } | |
1406 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1407 | |
1408 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1409 | { | |
1410 | if (phydev->drv->set_wol) | |
1411 | return phydev->drv->set_wol(phydev, wol); | |
1412 | ||
1413 | return -EOPNOTSUPP; | |
1414 | } | |
1415 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1416 | ||
1417 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1418 | { | |
1419 | if (phydev->drv->get_wol) | |
1420 | phydev->drv->get_wol(phydev, wol); | |
1421 | } | |
1422 | EXPORT_SYMBOL(phy_ethtool_get_wol); | |
9d9a77ce PR |
1423 | |
1424 | int phy_ethtool_get_link_ksettings(struct net_device *ndev, | |
1425 | struct ethtool_link_ksettings *cmd) | |
1426 | { | |
1427 | struct phy_device *phydev = ndev->phydev; | |
1428 | ||
1429 | if (!phydev) | |
1430 | return -ENODEV; | |
1431 | ||
1432 | return phy_ethtool_ksettings_get(phydev, cmd); | |
1433 | } | |
1434 | EXPORT_SYMBOL(phy_ethtool_get_link_ksettings); | |
1435 | ||
1436 | int phy_ethtool_set_link_ksettings(struct net_device *ndev, | |
1437 | const struct ethtool_link_ksettings *cmd) | |
1438 | { | |
1439 | struct phy_device *phydev = ndev->phydev; | |
1440 | ||
1441 | if (!phydev) | |
1442 | return -ENODEV; | |
1443 | ||
1444 | return phy_ethtool_ksettings_set(phydev, cmd); | |
1445 | } | |
1446 | EXPORT_SYMBOL(phy_ethtool_set_link_ksettings); | |
e86a8987 FF |
1447 | |
1448 | int phy_ethtool_nway_reset(struct net_device *ndev) | |
1449 | { | |
1450 | struct phy_device *phydev = ndev->phydev; | |
1451 | ||
1452 | if (!phydev) | |
1453 | return -ENODEV; | |
1454 | ||
1455 | return genphy_restart_aneg(phydev); | |
1456 | } | |
1457 | EXPORT_SYMBOL(phy_ethtool_nway_reset); |