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Commit | Line | Data |
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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"; | |
53 | case SPEED_10000: | |
54 | return "10Gbps"; | |
55 | case SPEED_UNKNOWN: | |
56 | return "Unknown"; | |
57 | default: | |
58 | return "Unsupported (update phy.c)"; | |
59 | } | |
60 | } | |
61 | ||
3e2186e0 FF |
62 | #define PHY_STATE_STR(_state) \ |
63 | case PHY_##_state: \ | |
64 | return __stringify(_state); \ | |
65 | ||
66 | static const char *phy_state_to_str(enum phy_state st) | |
67 | { | |
68 | switch (st) { | |
69 | PHY_STATE_STR(DOWN) | |
70 | PHY_STATE_STR(STARTING) | |
71 | PHY_STATE_STR(READY) | |
72 | PHY_STATE_STR(PENDING) | |
73 | PHY_STATE_STR(UP) | |
74 | PHY_STATE_STR(AN) | |
75 | PHY_STATE_STR(RUNNING) | |
76 | PHY_STATE_STR(NOLINK) | |
77 | PHY_STATE_STR(FORCING) | |
78 | PHY_STATE_STR(CHANGELINK) | |
79 | PHY_STATE_STR(HALTED) | |
80 | PHY_STATE_STR(RESUMING) | |
81 | } | |
82 | ||
83 | return NULL; | |
84 | } | |
85 | ||
86 | ||
b3df0da8 RD |
87 | /** |
88 | * phy_print_status - Convenience function to print out the current phy status | |
89 | * @phydev: the phy_device struct | |
e1393456 AF |
90 | */ |
91 | void phy_print_status(struct phy_device *phydev) | |
92 | { | |
2f53e904 | 93 | if (phydev->link) { |
df40cc88 | 94 | netdev_info(phydev->attached_dev, |
766d1d38 FF |
95 | "Link is Up - %s/%s - flow control %s\n", |
96 | phy_speed_to_str(phydev->speed), | |
df40cc88 FF |
97 | DUPLEX_FULL == phydev->duplex ? "Full" : "Half", |
98 | phydev->pause ? "rx/tx" : "off"); | |
2f53e904 | 99 | } else { |
43b6329f | 100 | netdev_info(phydev->attached_dev, "Link is Down\n"); |
2f53e904 | 101 | } |
e1393456 AF |
102 | } |
103 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 104 | |
b3df0da8 RD |
105 | /** |
106 | * phy_clear_interrupt - Ack the phy device's interrupt | |
107 | * @phydev: the phy_device struct | |
108 | * | |
109 | * If the @phydev driver has an ack_interrupt function, call it to | |
110 | * ack and clear the phy device's interrupt. | |
111 | * | |
ad033506 | 112 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 113 | */ |
89ff05ec | 114 | static int phy_clear_interrupt(struct phy_device *phydev) |
00db8189 | 115 | { |
00db8189 | 116 | if (phydev->drv->ack_interrupt) |
e62a768f | 117 | return phydev->drv->ack_interrupt(phydev); |
00db8189 | 118 | |
e62a768f | 119 | return 0; |
00db8189 AF |
120 | } |
121 | ||
b3df0da8 RD |
122 | /** |
123 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
124 | * @phydev: the phy_device struct | |
125 | * @interrupts: interrupt flags to configure for this @phydev | |
126 | * | |
ad033506 | 127 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 128 | */ |
89ff05ec | 129 | static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
00db8189 | 130 | { |
00db8189 AF |
131 | phydev->interrupts = interrupts; |
132 | if (phydev->drv->config_intr) | |
e62a768f | 133 | return phydev->drv->config_intr(phydev); |
00db8189 | 134 | |
e62a768f | 135 | return 0; |
00db8189 AF |
136 | } |
137 | ||
138 | ||
b3df0da8 RD |
139 | /** |
140 | * phy_aneg_done - return auto-negotiation status | |
141 | * @phydev: target phy_device struct | |
00db8189 | 142 | * |
76a423a3 FF |
143 | * Description: Return the auto-negotiation status from this @phydev |
144 | * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation | |
145 | * is still pending. | |
00db8189 | 146 | */ |
372788f9 | 147 | int phy_aneg_done(struct phy_device *phydev) |
00db8189 | 148 | { |
65f2767a | 149 | if (phydev->drv && phydev->drv->aneg_done) |
76a423a3 FF |
150 | return phydev->drv->aneg_done(phydev); |
151 | ||
a9fa6e6a | 152 | return genphy_aneg_done(phydev); |
00db8189 | 153 | } |
372788f9 | 154 | EXPORT_SYMBOL(phy_aneg_done); |
00db8189 | 155 | |
00db8189 | 156 | /* A structure for mapping a particular speed and duplex |
2f53e904 SS |
157 | * combination to a particular SUPPORTED and ADVERTISED value |
158 | */ | |
00db8189 AF |
159 | struct phy_setting { |
160 | int speed; | |
161 | int duplex; | |
162 | u32 setting; | |
163 | }; | |
164 | ||
165 | /* A mapping of all SUPPORTED settings to speed/duplex */ | |
f71e1309 | 166 | static const struct phy_setting settings[] = { |
00db8189 | 167 | { |
3e707706 LT |
168 | .speed = SPEED_10000, |
169 | .duplex = DUPLEX_FULL, | |
170 | .setting = SUPPORTED_10000baseKR_Full, | |
171 | }, | |
172 | { | |
173 | .speed = SPEED_10000, | |
174 | .duplex = DUPLEX_FULL, | |
175 | .setting = SUPPORTED_10000baseKX4_Full, | |
176 | }, | |
177 | { | |
178 | .speed = SPEED_10000, | |
00db8189 AF |
179 | .duplex = DUPLEX_FULL, |
180 | .setting = SUPPORTED_10000baseT_Full, | |
181 | }, | |
3e707706 LT |
182 | { |
183 | .speed = SPEED_2500, | |
184 | .duplex = DUPLEX_FULL, | |
185 | .setting = SUPPORTED_2500baseX_Full, | |
186 | }, | |
187 | { | |
188 | .speed = SPEED_1000, | |
189 | .duplex = DUPLEX_FULL, | |
190 | .setting = SUPPORTED_1000baseKX_Full, | |
191 | }, | |
00db8189 AF |
192 | { |
193 | .speed = SPEED_1000, | |
194 | .duplex = DUPLEX_FULL, | |
195 | .setting = SUPPORTED_1000baseT_Full, | |
196 | }, | |
197 | { | |
198 | .speed = SPEED_1000, | |
199 | .duplex = DUPLEX_HALF, | |
200 | .setting = SUPPORTED_1000baseT_Half, | |
201 | }, | |
202 | { | |
203 | .speed = SPEED_100, | |
204 | .duplex = DUPLEX_FULL, | |
205 | .setting = SUPPORTED_100baseT_Full, | |
206 | }, | |
207 | { | |
208 | .speed = SPEED_100, | |
209 | .duplex = DUPLEX_HALF, | |
210 | .setting = SUPPORTED_100baseT_Half, | |
211 | }, | |
212 | { | |
213 | .speed = SPEED_10, | |
214 | .duplex = DUPLEX_FULL, | |
215 | .setting = SUPPORTED_10baseT_Full, | |
216 | }, | |
217 | { | |
218 | .speed = SPEED_10, | |
219 | .duplex = DUPLEX_HALF, | |
220 | .setting = SUPPORTED_10baseT_Half, | |
221 | }, | |
222 | }; | |
223 | ||
ff8ac609 | 224 | #define MAX_NUM_SETTINGS ARRAY_SIZE(settings) |
00db8189 | 225 | |
b3df0da8 RD |
226 | /** |
227 | * phy_find_setting - find a PHY settings array entry that matches speed & duplex | |
228 | * @speed: speed to match | |
229 | * @duplex: duplex to match | |
00db8189 | 230 | * |
b3df0da8 | 231 | * Description: Searches the settings array for the setting which |
00db8189 AF |
232 | * matches the desired speed and duplex, and returns the index |
233 | * of that setting. Returns the index of the last setting if | |
234 | * none of the others match. | |
235 | */ | |
4ae6e50c | 236 | static inline unsigned int phy_find_setting(int speed, int duplex) |
00db8189 | 237 | { |
4ae6e50c | 238 | unsigned int idx = 0; |
00db8189 AF |
239 | |
240 | while (idx < ARRAY_SIZE(settings) && | |
2f53e904 | 241 | (settings[idx].speed != speed || settings[idx].duplex != duplex)) |
00db8189 AF |
242 | idx++; |
243 | ||
244 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
245 | } | |
246 | ||
b3df0da8 RD |
247 | /** |
248 | * phy_find_valid - find a PHY setting that matches the requested features mask | |
249 | * @idx: The first index in settings[] to search | |
250 | * @features: A mask of the valid settings | |
00db8189 | 251 | * |
b3df0da8 | 252 | * Description: Returns the index of the first valid setting less |
00db8189 AF |
253 | * than or equal to the one pointed to by idx, as determined by |
254 | * the mask in features. Returns the index of the last setting | |
255 | * if nothing else matches. | |
256 | */ | |
4ae6e50c | 257 | static inline unsigned int phy_find_valid(unsigned int idx, u32 features) |
00db8189 AF |
258 | { |
259 | while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) | |
260 | idx++; | |
261 | ||
262 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
263 | } | |
264 | ||
1f9127ca ZB |
265 | /** |
266 | * phy_supported_speeds - return all speeds currently supported by a phy device | |
267 | * @phy: The phy device to return supported speeds of. | |
268 | * @speeds: buffer to store supported speeds in. | |
269 | * @size: size of speeds buffer. | |
270 | * | |
271 | * Description: Returns the number of supported speeds, and fills the speeds | |
272 | * buffer with the supported speeds. If speeds buffer is too small to contain | |
273 | * all currently supported speeds, will return as many speeds as can fit. | |
274 | */ | |
275 | unsigned int phy_supported_speeds(struct phy_device *phy, | |
276 | unsigned int *speeds, | |
277 | unsigned int size) | |
278 | { | |
279 | unsigned int count = 0; | |
280 | unsigned int idx = 0; | |
281 | ||
282 | while (idx < MAX_NUM_SETTINGS && count < size) { | |
283 | idx = phy_find_valid(idx, phy->supported); | |
284 | ||
285 | if (!(settings[idx].setting & phy->supported)) | |
286 | break; | |
287 | ||
288 | /* Assumes settings are grouped by speed */ | |
289 | if ((count == 0) || | |
290 | (speeds[count - 1] != settings[idx].speed)) { | |
291 | speeds[count] = settings[idx].speed; | |
292 | count++; | |
293 | } | |
294 | idx++; | |
295 | } | |
296 | ||
297 | return count; | |
298 | } | |
299 | ||
54da5a8b GR |
300 | /** |
301 | * phy_check_valid - check if there is a valid PHY setting which matches | |
302 | * speed, duplex, and feature mask | |
303 | * @speed: speed to match | |
304 | * @duplex: duplex to match | |
305 | * @features: A mask of the valid settings | |
306 | * | |
307 | * Description: Returns true if there is a valid setting, false otherwise. | |
308 | */ | |
309 | static inline bool phy_check_valid(int speed, int duplex, u32 features) | |
310 | { | |
311 | unsigned int idx; | |
312 | ||
313 | idx = phy_find_valid(phy_find_setting(speed, duplex), features); | |
314 | ||
315 | return settings[idx].speed == speed && settings[idx].duplex == duplex && | |
316 | (settings[idx].setting & features); | |
317 | } | |
318 | ||
b3df0da8 RD |
319 | /** |
320 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
321 | * @phydev: the target phy_device struct | |
00db8189 | 322 | * |
b3df0da8 | 323 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 324 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 325 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 326 | */ |
89ff05ec | 327 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 AF |
328 | { |
329 | u32 features = phydev->supported; | |
4ae6e50c | 330 | unsigned int idx; |
00db8189 AF |
331 | |
332 | /* Sanitize settings based on PHY capabilities */ | |
333 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 334 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 AF |
335 | |
336 | idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), | |
337 | features); | |
338 | ||
339 | phydev->speed = settings[idx].speed; | |
340 | phydev->duplex = settings[idx].duplex; | |
341 | } | |
00db8189 | 342 | |
b3df0da8 RD |
343 | /** |
344 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
345 | * @phydev: target phy_device struct | |
346 | * @cmd: ethtool_cmd | |
00db8189 AF |
347 | * |
348 | * A few notes about parameter checking: | |
349 | * - We don't set port or transceiver, so we don't care what they | |
350 | * were set to. | |
351 | * - phy_start_aneg() will make sure forced settings are sane, and | |
352 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 353 | * care if ethtool tries to give us bad values. |
00db8189 AF |
354 | */ |
355 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
356 | { | |
25db0338 DD |
357 | u32 speed = ethtool_cmd_speed(cmd); |
358 | ||
e5a03bfd | 359 | if (cmd->phy_address != phydev->mdio.addr) |
00db8189 AF |
360 | return -EINVAL; |
361 | ||
2f53e904 | 362 | /* We make sure that we don't pass unsupported values in to the PHY */ |
00db8189 AF |
363 | cmd->advertising &= phydev->supported; |
364 | ||
365 | /* Verify the settings we care about. */ | |
366 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
367 | return -EINVAL; | |
368 | ||
369 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
370 | return -EINVAL; | |
371 | ||
8e95a202 | 372 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
373 | ((speed != SPEED_1000 && |
374 | speed != SPEED_100 && | |
375 | speed != SPEED_10) || | |
8e95a202 JP |
376 | (cmd->duplex != DUPLEX_HALF && |
377 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
378 | return -EINVAL; |
379 | ||
380 | phydev->autoneg = cmd->autoneg; | |
381 | ||
25db0338 | 382 | phydev->speed = speed; |
00db8189 AF |
383 | |
384 | phydev->advertising = cmd->advertising; | |
385 | ||
386 | if (AUTONEG_ENABLE == cmd->autoneg) | |
387 | phydev->advertising |= ADVERTISED_Autoneg; | |
388 | else | |
389 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
390 | ||
391 | phydev->duplex = cmd->duplex; | |
392 | ||
1004ee61 | 393 | phydev->mdix_ctrl = cmd->eth_tp_mdix_ctrl; |
634ec36c | 394 | |
00db8189 AF |
395 | /* Restart the PHY */ |
396 | phy_start_aneg(phydev); | |
397 | ||
398 | return 0; | |
399 | } | |
9f6d55d0 | 400 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 | 401 | |
2d55173e PR |
402 | int phy_ethtool_ksettings_set(struct phy_device *phydev, |
403 | const struct ethtool_link_ksettings *cmd) | |
404 | { | |
405 | u8 autoneg = cmd->base.autoneg; | |
406 | u8 duplex = cmd->base.duplex; | |
407 | u32 speed = cmd->base.speed; | |
408 | u32 advertising; | |
409 | ||
410 | if (cmd->base.phy_address != phydev->mdio.addr) | |
411 | return -EINVAL; | |
412 | ||
413 | ethtool_convert_link_mode_to_legacy_u32(&advertising, | |
414 | cmd->link_modes.advertising); | |
415 | ||
416 | /* We make sure that we don't pass unsupported values in to the PHY */ | |
417 | advertising &= phydev->supported; | |
418 | ||
419 | /* Verify the settings we care about. */ | |
420 | if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) | |
421 | return -EINVAL; | |
422 | ||
423 | if (autoneg == AUTONEG_ENABLE && advertising == 0) | |
424 | return -EINVAL; | |
425 | ||
426 | if (autoneg == AUTONEG_DISABLE && | |
427 | ((speed != SPEED_1000 && | |
428 | speed != SPEED_100 && | |
429 | speed != SPEED_10) || | |
430 | (duplex != DUPLEX_HALF && | |
431 | duplex != DUPLEX_FULL))) | |
432 | return -EINVAL; | |
433 | ||
434 | phydev->autoneg = autoneg; | |
435 | ||
436 | phydev->speed = speed; | |
437 | ||
438 | phydev->advertising = advertising; | |
439 | ||
440 | if (autoneg == AUTONEG_ENABLE) | |
441 | phydev->advertising |= ADVERTISED_Autoneg; | |
442 | else | |
443 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
444 | ||
445 | phydev->duplex = duplex; | |
446 | ||
1004ee61 | 447 | phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; |
2d55173e PR |
448 | |
449 | /* Restart the PHY */ | |
450 | phy_start_aneg(phydev); | |
451 | ||
452 | return 0; | |
453 | } | |
454 | EXPORT_SYMBOL(phy_ethtool_ksettings_set); | |
455 | ||
00db8189 AF |
456 | int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) |
457 | { | |
458 | cmd->supported = phydev->supported; | |
459 | ||
460 | cmd->advertising = phydev->advertising; | |
114002bc | 461 | cmd->lp_advertising = phydev->lp_advertising; |
00db8189 | 462 | |
70739497 | 463 | ethtool_cmd_speed_set(cmd, phydev->speed); |
00db8189 | 464 | cmd->duplex = phydev->duplex; |
c88838ce FF |
465 | if (phydev->interface == PHY_INTERFACE_MODE_MOCA) |
466 | cmd->port = PORT_BNC; | |
467 | else | |
468 | cmd->port = PORT_MII; | |
e5a03bfd | 469 | cmd->phy_address = phydev->mdio.addr; |
4284b6a5 FF |
470 | cmd->transceiver = phy_is_internal(phydev) ? |
471 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
00db8189 | 472 | cmd->autoneg = phydev->autoneg; |
1004ee61 RL |
473 | cmd->eth_tp_mdix_ctrl = phydev->mdix_ctrl; |
474 | cmd->eth_tp_mdix = phydev->mdix; | |
00db8189 AF |
475 | |
476 | return 0; | |
477 | } | |
9f6d55d0 | 478 | EXPORT_SYMBOL(phy_ethtool_gset); |
2d55173e PR |
479 | |
480 | int phy_ethtool_ksettings_get(struct phy_device *phydev, | |
481 | struct ethtool_link_ksettings *cmd) | |
482 | { | |
483 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, | |
484 | phydev->supported); | |
485 | ||
486 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, | |
487 | phydev->advertising); | |
488 | ||
489 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising, | |
490 | phydev->lp_advertising); | |
491 | ||
492 | cmd->base.speed = phydev->speed; | |
493 | cmd->base.duplex = phydev->duplex; | |
494 | if (phydev->interface == PHY_INTERFACE_MODE_MOCA) | |
495 | cmd->base.port = PORT_BNC; | |
496 | else | |
497 | cmd->base.port = PORT_MII; | |
498 | ||
499 | cmd->base.phy_address = phydev->mdio.addr; | |
500 | cmd->base.autoneg = phydev->autoneg; | |
1004ee61 RL |
501 | cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; |
502 | cmd->base.eth_tp_mdix = phydev->mdix; | |
2d55173e PR |
503 | |
504 | return 0; | |
505 | } | |
506 | EXPORT_SYMBOL(phy_ethtool_ksettings_get); | |
00db8189 | 507 | |
b3df0da8 RD |
508 | /** |
509 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
510 | * @phydev: the phy_device struct | |
00c7d920 | 511 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
512 | * @cmd: ioctl cmd to execute |
513 | * | |
514 | * Note that this function is currently incompatible with the | |
00db8189 | 515 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 516 | * current state. Use at own risk. |
00db8189 | 517 | */ |
2f53e904 | 518 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 519 | { |
28b04113 | 520 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 | 521 | u16 val = mii_data->val_in; |
79ce0477 | 522 | bool change_autoneg = false; |
00db8189 AF |
523 | |
524 | switch (cmd) { | |
525 | case SIOCGMIIPHY: | |
e5a03bfd | 526 | mii_data->phy_id = phydev->mdio.addr; |
c6d6a511 LB |
527 | /* fall through */ |
528 | ||
00db8189 | 529 | case SIOCGMIIREG: |
e5a03bfd AL |
530 | mii_data->val_out = mdiobus_read(phydev->mdio.bus, |
531 | mii_data->phy_id, | |
af1dc13e | 532 | mii_data->reg_num); |
e62a768f | 533 | return 0; |
00db8189 AF |
534 | |
535 | case SIOCSMIIREG: | |
e5a03bfd | 536 | if (mii_data->phy_id == phydev->mdio.addr) { |
e109374f | 537 | switch (mii_data->reg_num) { |
00db8189 | 538 | case MII_BMCR: |
79ce0477 BH |
539 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { |
540 | if (phydev->autoneg == AUTONEG_ENABLE) | |
541 | change_autoneg = true; | |
00db8189 | 542 | phydev->autoneg = AUTONEG_DISABLE; |
79ce0477 BH |
543 | if (val & BMCR_FULLDPLX) |
544 | phydev->duplex = DUPLEX_FULL; | |
545 | else | |
546 | phydev->duplex = DUPLEX_HALF; | |
547 | if (val & BMCR_SPEED1000) | |
548 | phydev->speed = SPEED_1000; | |
549 | else if (val & BMCR_SPEED100) | |
550 | phydev->speed = SPEED_100; | |
551 | else phydev->speed = SPEED_10; | |
552 | } | |
553 | else { | |
554 | if (phydev->autoneg == AUTONEG_DISABLE) | |
555 | change_autoneg = true; | |
00db8189 | 556 | phydev->autoneg = AUTONEG_ENABLE; |
79ce0477 | 557 | } |
00db8189 AF |
558 | break; |
559 | case MII_ADVERTISE: | |
79ce0477 BH |
560 | phydev->advertising = mii_adv_to_ethtool_adv_t(val); |
561 | change_autoneg = true; | |
00db8189 AF |
562 | break; |
563 | default: | |
564 | /* do nothing */ | |
565 | break; | |
566 | } | |
567 | } | |
568 | ||
e5a03bfd | 569 | mdiobus_write(phydev->mdio.bus, mii_data->phy_id, |
af1dc13e PK |
570 | mii_data->reg_num, val); |
571 | ||
e5a03bfd | 572 | if (mii_data->phy_id == phydev->mdio.addr && |
cf18b778 | 573 | mii_data->reg_num == MII_BMCR && |
2613f95f | 574 | val & BMCR_RESET) |
e62a768f | 575 | return phy_init_hw(phydev); |
79ce0477 BH |
576 | |
577 | if (change_autoneg) | |
578 | return phy_start_aneg(phydev); | |
579 | ||
e62a768f | 580 | return 0; |
dda93b48 | 581 | |
c1f19b51 | 582 | case SIOCSHWTSTAMP: |
25149ef9 | 583 | if (phydev->drv && phydev->drv->hwtstamp) |
c1f19b51 RC |
584 | return phydev->drv->hwtstamp(phydev, ifr); |
585 | /* fall through */ | |
586 | ||
dda93b48 | 587 | default: |
c6d6a511 | 588 | return -EOPNOTSUPP; |
00db8189 | 589 | } |
00db8189 | 590 | } |
680e9fe9 | 591 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 592 | |
b3df0da8 RD |
593 | /** |
594 | * phy_start_aneg - start auto-negotiation for this PHY device | |
595 | * @phydev: the phy_device struct | |
e1393456 | 596 | * |
b3df0da8 RD |
597 | * Description: Sanitizes the settings (if we're not autonegotiating |
598 | * them), and then calls the driver's config_aneg function. | |
599 | * If the PHYCONTROL Layer is operating, we change the state to | |
600 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 AF |
601 | */ |
602 | int phy_start_aneg(struct phy_device *phydev) | |
603 | { | |
604 | int err; | |
605 | ||
25149ef9 FF |
606 | if (!phydev->drv) |
607 | return -EIO; | |
608 | ||
35b5f6b1 | 609 | mutex_lock(&phydev->lock); |
e1393456 AF |
610 | |
611 | if (AUTONEG_DISABLE == phydev->autoneg) | |
612 | phy_sanitize_settings(phydev); | |
613 | ||
9b3320ef BH |
614 | /* Invalidate LP advertising flags */ |
615 | phydev->lp_advertising = 0; | |
616 | ||
e1393456 | 617 | err = phydev->drv->config_aneg(phydev); |
e1393456 AF |
618 | if (err < 0) |
619 | goto out_unlock; | |
620 | ||
621 | if (phydev->state != PHY_HALTED) { | |
622 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
623 | phydev->state = PHY_AN; | |
624 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
625 | } else { | |
626 | phydev->state = PHY_FORCING; | |
627 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
628 | } | |
629 | } | |
630 | ||
631 | out_unlock: | |
35b5f6b1 | 632 | mutex_unlock(&phydev->lock); |
e1393456 AF |
633 | return err; |
634 | } | |
635 | EXPORT_SYMBOL(phy_start_aneg); | |
636 | ||
b3df0da8 RD |
637 | /** |
638 | * phy_start_machine - start PHY state machine tracking | |
639 | * @phydev: the phy_device struct | |
00db8189 | 640 | * |
b3df0da8 | 641 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
642 | * which tracks whether the PHY is starting up, negotiating, |
643 | * etc. This function starts the timer which tracks the state | |
29935aeb SS |
644 | * of the PHY. If you want to maintain your own state machine, |
645 | * do not call this function. | |
b3df0da8 | 646 | */ |
29935aeb | 647 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 648 | { |
bbb47bde | 649 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
650 | } |
651 | ||
3c293f4e AL |
652 | /** |
653 | * phy_trigger_machine - trigger the state machine to run | |
654 | * | |
655 | * @phydev: the phy_device struct | |
eab12771 | 656 | * @sync: indicate whether we should wait for the workqueue cancelation |
3c293f4e AL |
657 | * |
658 | * Description: There has been a change in state which requires that the | |
659 | * state machine runs. | |
660 | */ | |
661 | ||
eab12771 | 662 | static void phy_trigger_machine(struct phy_device *phydev, bool sync) |
3c293f4e | 663 | { |
eab12771 FF |
664 | if (sync) |
665 | cancel_delayed_work_sync(&phydev->state_queue); | |
666 | else | |
667 | cancel_delayed_work(&phydev->state_queue); | |
3c293f4e AL |
668 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); |
669 | } | |
670 | ||
b3df0da8 RD |
671 | /** |
672 | * phy_stop_machine - stop the PHY state machine tracking | |
673 | * @phydev: target phy_device struct | |
00db8189 | 674 | * |
b3df0da8 | 675 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 676 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
677 | * phy_detach. |
678 | */ | |
679 | void phy_stop_machine(struct phy_device *phydev) | |
680 | { | |
a390d1f3 | 681 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 682 | |
35b5f6b1 | 683 | mutex_lock(&phydev->lock); |
49d52e81 | 684 | if (phydev->state > PHY_UP && phydev->state != PHY_HALTED) |
00db8189 | 685 | phydev->state = PHY_UP; |
35b5f6b1 | 686 | mutex_unlock(&phydev->lock); |
00db8189 AF |
687 | } |
688 | ||
b3df0da8 RD |
689 | /** |
690 | * phy_error - enter HALTED state for this PHY device | |
691 | * @phydev: target phy_device struct | |
00db8189 AF |
692 | * |
693 | * Moves the PHY to the HALTED state in response to a read | |
694 | * or write error, and tells the controller the link is down. | |
695 | * Must not be called from interrupt context, or while the | |
696 | * phydev->lock is held. | |
697 | */ | |
9b9a8bfc | 698 | static void phy_error(struct phy_device *phydev) |
00db8189 | 699 | { |
35b5f6b1 | 700 | mutex_lock(&phydev->lock); |
00db8189 | 701 | phydev->state = PHY_HALTED; |
35b5f6b1 | 702 | mutex_unlock(&phydev->lock); |
3c293f4e | 703 | |
eab12771 | 704 | phy_trigger_machine(phydev, false); |
00db8189 AF |
705 | } |
706 | ||
b3df0da8 RD |
707 | /** |
708 | * phy_interrupt - PHY interrupt handler | |
709 | * @irq: interrupt line | |
710 | * @phy_dat: phy_device pointer | |
e1393456 | 711 | * |
b3df0da8 | 712 | * Description: When a PHY interrupt occurs, the handler disables |
664fcf12 | 713 | * interrupts, and uses phy_change to handle the interrupt. |
e1393456 | 714 | */ |
7d12e780 | 715 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
716 | { |
717 | struct phy_device *phydev = phy_dat; | |
718 | ||
3c3070d7 MR |
719 | if (PHY_HALTED == phydev->state) |
720 | return IRQ_NONE; /* It can't be ours. */ | |
721 | ||
e1393456 | 722 | disable_irq_nosync(irq); |
0ac49527 | 723 | atomic_inc(&phydev->irq_disable); |
e1393456 | 724 | |
664fcf12 | 725 | phy_change(phydev); |
e1393456 AF |
726 | |
727 | return IRQ_HANDLED; | |
728 | } | |
729 | ||
b3df0da8 RD |
730 | /** |
731 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
732 | * @phydev: target phy_device struct | |
733 | */ | |
89ff05ec | 734 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 735 | { |
553fe92b | 736 | int err = phy_clear_interrupt(phydev); |
00db8189 | 737 | |
e1393456 AF |
738 | if (err < 0) |
739 | return err; | |
00db8189 | 740 | |
553fe92b | 741 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 742 | } |
00db8189 | 743 | |
b3df0da8 RD |
744 | /** |
745 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
746 | * @phydev: target phy_device struct | |
747 | */ | |
89ff05ec | 748 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
749 | { |
750 | int err; | |
751 | ||
752 | /* Disable PHY interrupts */ | |
753 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
00db8189 AF |
754 | if (err) |
755 | goto phy_err; | |
756 | ||
757 | /* Clear the interrupt */ | |
758 | err = phy_clear_interrupt(phydev); | |
00db8189 AF |
759 | if (err) |
760 | goto phy_err; | |
761 | ||
762 | return 0; | |
763 | ||
764 | phy_err: | |
765 | phy_error(phydev); | |
766 | ||
767 | return err; | |
768 | } | |
e1393456 | 769 | |
b3df0da8 RD |
770 | /** |
771 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
772 | * @phydev: target phy_device struct | |
e1393456 | 773 | * |
b3df0da8 RD |
774 | * Description: Request the interrupt for the given PHY. |
775 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 776 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 777 | * This should only be called with a valid IRQ number. |
b3df0da8 | 778 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
779 | */ |
780 | int phy_start_interrupts(struct phy_device *phydev) | |
781 | { | |
0ac49527 | 782 | atomic_set(&phydev->irq_disable, 0); |
c974bdbc AL |
783 | if (request_threaded_irq(phydev->irq, NULL, phy_interrupt, |
784 | IRQF_ONESHOT | IRQF_SHARED, | |
ae0219cb | 785 | phydev_name(phydev), phydev) < 0) { |
8d242488 | 786 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
e5a03bfd | 787 | phydev->mdio.bus->name, phydev->irq); |
e1393456 AF |
788 | phydev->irq = PHY_POLL; |
789 | return 0; | |
790 | } | |
791 | ||
e62a768f | 792 | return phy_enable_interrupts(phydev); |
e1393456 AF |
793 | } |
794 | EXPORT_SYMBOL(phy_start_interrupts); | |
795 | ||
b3df0da8 RD |
796 | /** |
797 | * phy_stop_interrupts - disable interrupts from a PHY device | |
798 | * @phydev: target phy_device struct | |
799 | */ | |
e1393456 AF |
800 | int phy_stop_interrupts(struct phy_device *phydev) |
801 | { | |
553fe92b | 802 | int err = phy_disable_interrupts(phydev); |
e1393456 AF |
803 | |
804 | if (err) | |
805 | phy_error(phydev); | |
806 | ||
0ac49527 MR |
807 | free_irq(phydev->irq, phydev); |
808 | ||
2f53e904 | 809 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
810 | * been left unbalanced from phy_interrupt() and enable_irq() |
811 | * has to be called so that other devices on the line work. | |
812 | */ | |
813 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
814 | enable_irq(phydev->irq); | |
e1393456 AF |
815 | |
816 | return err; | |
817 | } | |
818 | EXPORT_SYMBOL(phy_stop_interrupts); | |
819 | ||
b3df0da8 | 820 | /** |
664fcf12 AL |
821 | * phy_change - Called by the phy_interrupt to handle PHY changes |
822 | * @phydev: phy_device struct that interrupted | |
b3df0da8 | 823 | */ |
664fcf12 | 824 | void phy_change(struct phy_device *phydev) |
e1393456 | 825 | { |
deccd16f FF |
826 | if (phy_interrupt_is_valid(phydev)) { |
827 | if (phydev->drv->did_interrupt && | |
828 | !phydev->drv->did_interrupt(phydev)) | |
829 | goto ignore; | |
a8729eb3 | 830 | |
deccd16f FF |
831 | if (phy_disable_interrupts(phydev)) |
832 | goto phy_err; | |
833 | } | |
e1393456 | 834 | |
35b5f6b1 | 835 | mutex_lock(&phydev->lock); |
e1393456 AF |
836 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
837 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 838 | mutex_unlock(&phydev->lock); |
e1393456 | 839 | |
deccd16f FF |
840 | if (phy_interrupt_is_valid(phydev)) { |
841 | atomic_dec(&phydev->irq_disable); | |
842 | enable_irq(phydev->irq); | |
e1393456 | 843 | |
deccd16f FF |
844 | /* Reenable interrupts */ |
845 | if (PHY_HALTED != phydev->state && | |
846 | phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) | |
847 | goto irq_enable_err; | |
848 | } | |
e1393456 | 849 | |
a390d1f3 | 850 | /* reschedule state queue work to run as soon as possible */ |
eab12771 | 851 | phy_trigger_machine(phydev, true); |
e1393456 AF |
852 | return; |
853 | ||
a8729eb3 AG |
854 | ignore: |
855 | atomic_dec(&phydev->irq_disable); | |
856 | enable_irq(phydev->irq); | |
857 | return; | |
858 | ||
e1393456 AF |
859 | irq_enable_err: |
860 | disable_irq(phydev->irq); | |
0ac49527 | 861 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
862 | phy_err: |
863 | phy_error(phydev); | |
864 | } | |
865 | ||
664fcf12 AL |
866 | /** |
867 | * phy_change_work - Scheduled by the phy_mac_interrupt to handle PHY changes | |
868 | * @work: work_struct that describes the work to be done | |
869 | */ | |
870 | void phy_change_work(struct work_struct *work) | |
871 | { | |
872 | struct phy_device *phydev = | |
873 | container_of(work, struct phy_device, phy_queue); | |
874 | ||
875 | phy_change(phydev); | |
876 | } | |
877 | ||
b3df0da8 RD |
878 | /** |
879 | * phy_stop - Bring down the PHY link, and stop checking the status | |
880 | * @phydev: target phy_device struct | |
881 | */ | |
e1393456 AF |
882 | void phy_stop(struct phy_device *phydev) |
883 | { | |
35b5f6b1 | 884 | mutex_lock(&phydev->lock); |
e1393456 AF |
885 | |
886 | if (PHY_HALTED == phydev->state) | |
887 | goto out_unlock; | |
888 | ||
2c7b4921 | 889 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
890 | /* Disable PHY Interrupts */ |
891 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 892 | |
3c3070d7 MR |
893 | /* Clear any pending interrupts */ |
894 | phy_clear_interrupt(phydev); | |
895 | } | |
e1393456 | 896 | |
6daf6531 MR |
897 | phydev->state = PHY_HALTED; |
898 | ||
e1393456 | 899 | out_unlock: |
35b5f6b1 | 900 | mutex_unlock(&phydev->lock); |
3c3070d7 | 901 | |
2f53e904 | 902 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
903 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
904 | * will not reenable interrupts. | |
905 | */ | |
e1393456 | 906 | } |
2f53e904 | 907 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 908 | |
b3df0da8 RD |
909 | /** |
910 | * phy_start - start or restart a PHY device | |
911 | * @phydev: target phy_device struct | |
e1393456 | 912 | * |
b3df0da8 | 913 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
914 | * handle PHY-related work. Used during startup to start the |
915 | * PHY, and after a call to phy_stop() to resume operation. | |
916 | * Also used to indicate the MDIO bus has cleared an error | |
917 | * condition. | |
918 | */ | |
919 | void phy_start(struct phy_device *phydev) | |
920 | { | |
c15e10e7 TB |
921 | bool do_resume = false; |
922 | int err = 0; | |
923 | ||
35b5f6b1 | 924 | mutex_lock(&phydev->lock); |
e1393456 AF |
925 | |
926 | switch (phydev->state) { | |
e109374f FF |
927 | case PHY_STARTING: |
928 | phydev->state = PHY_PENDING; | |
929 | break; | |
930 | case PHY_READY: | |
931 | phydev->state = PHY_UP; | |
932 | break; | |
933 | case PHY_HALTED: | |
c15e10e7 | 934 | /* make sure interrupts are re-enabled for the PHY */ |
84a527a4 SX |
935 | if (phydev->irq != PHY_POLL) { |
936 | err = phy_enable_interrupts(phydev); | |
937 | if (err < 0) | |
938 | break; | |
939 | } | |
c15e10e7 | 940 | |
e109374f | 941 | phydev->state = PHY_RESUMING; |
c15e10e7 TB |
942 | do_resume = true; |
943 | break; | |
e109374f FF |
944 | default: |
945 | break; | |
e1393456 | 946 | } |
35b5f6b1 | 947 | mutex_unlock(&phydev->lock); |
c15e10e7 TB |
948 | |
949 | /* if phy was suspended, bring the physical link up again */ | |
950 | if (do_resume) | |
951 | phy_resume(phydev); | |
3c293f4e | 952 | |
eab12771 | 953 | phy_trigger_machine(phydev, true); |
e1393456 | 954 | } |
e1393456 | 955 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 956 | |
61a17965 ZB |
957 | static void phy_adjust_link(struct phy_device *phydev) |
958 | { | |
959 | phydev->adjust_link(phydev->attached_dev); | |
2e0bc452 | 960 | phy_led_trigger_change_speed(phydev); |
61a17965 ZB |
961 | } |
962 | ||
35b5f6b1 NC |
963 | /** |
964 | * phy_state_machine - Handle the state machine | |
965 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 966 | */ |
4f9c85a1 | 967 | void phy_state_machine(struct work_struct *work) |
00db8189 | 968 | { |
bf6aede7 | 969 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 970 | struct phy_device *phydev = |
a390d1f3 | 971 | container_of(dwork, struct phy_device, state_queue); |
c15e10e7 | 972 | bool needs_aneg = false, do_suspend = false; |
3e2186e0 | 973 | enum phy_state old_state; |
00db8189 | 974 | int err = 0; |
11e122cb | 975 | int old_link; |
00db8189 | 976 | |
35b5f6b1 | 977 | mutex_lock(&phydev->lock); |
00db8189 | 978 | |
3e2186e0 FF |
979 | old_state = phydev->state; |
980 | ||
25149ef9 | 981 | if (phydev->drv && phydev->drv->link_change_notify) |
2b8f2a28 DM |
982 | phydev->drv->link_change_notify(phydev); |
983 | ||
e109374f FF |
984 | switch (phydev->state) { |
985 | case PHY_DOWN: | |
986 | case PHY_STARTING: | |
987 | case PHY_READY: | |
988 | case PHY_PENDING: | |
989 | break; | |
990 | case PHY_UP: | |
6e14a5ee | 991 | needs_aneg = true; |
00db8189 | 992 | |
e109374f FF |
993 | phydev->link_timeout = PHY_AN_TIMEOUT; |
994 | ||
995 | break; | |
996 | case PHY_AN: | |
997 | err = phy_read_status(phydev); | |
e109374f | 998 | if (err < 0) |
00db8189 | 999 | break; |
6b655529 | 1000 | |
2f53e904 | 1001 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
1002 | if (!phydev->link) { |
1003 | phydev->state = PHY_NOLINK; | |
1004 | netif_carrier_off(phydev->attached_dev); | |
61a17965 | 1005 | phy_adjust_link(phydev); |
e109374f FF |
1006 | break; |
1007 | } | |
6b655529 | 1008 | |
2f53e904 | 1009 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
1010 | err = phy_aneg_done(phydev); |
1011 | if (err < 0) | |
1012 | break; | |
6b655529 | 1013 | |
e109374f FF |
1014 | /* If AN is done, we're running */ |
1015 | if (err > 0) { | |
1016 | phydev->state = PHY_RUNNING; | |
1017 | netif_carrier_on(phydev->attached_dev); | |
61a17965 | 1018 | phy_adjust_link(phydev); |
00db8189 | 1019 | |
fa8cddaf | 1020 | } else if (0 == phydev->link_timeout--) |
6e14a5ee | 1021 | needs_aneg = true; |
e109374f FF |
1022 | break; |
1023 | case PHY_NOLINK: | |
321beec5 AL |
1024 | if (phy_interrupt_is_valid(phydev)) |
1025 | break; | |
1026 | ||
e109374f | 1027 | err = phy_read_status(phydev); |
e109374f | 1028 | if (err) |
00db8189 | 1029 | break; |
00db8189 | 1030 | |
e109374f | 1031 | if (phydev->link) { |
e46e08b8 BK |
1032 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1033 | err = phy_aneg_done(phydev); | |
1034 | if (err < 0) | |
1035 | break; | |
1036 | ||
1037 | if (!err) { | |
1038 | phydev->state = PHY_AN; | |
1039 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
1040 | break; | |
1041 | } | |
1042 | } | |
e109374f FF |
1043 | phydev->state = PHY_RUNNING; |
1044 | netif_carrier_on(phydev->attached_dev); | |
61a17965 | 1045 | phy_adjust_link(phydev); |
e109374f FF |
1046 | } |
1047 | break; | |
1048 | case PHY_FORCING: | |
1049 | err = genphy_update_link(phydev); | |
e109374f | 1050 | if (err) |
00db8189 | 1051 | break; |
00db8189 | 1052 | |
e109374f FF |
1053 | if (phydev->link) { |
1054 | phydev->state = PHY_RUNNING; | |
1055 | netif_carrier_on(phydev->attached_dev); | |
1056 | } else { | |
1057 | if (0 == phydev->link_timeout--) | |
6e14a5ee | 1058 | needs_aneg = true; |
e109374f | 1059 | } |
00db8189 | 1060 | |
61a17965 | 1061 | phy_adjust_link(phydev); |
e109374f FF |
1062 | break; |
1063 | case PHY_RUNNING: | |
d5c3d846 FF |
1064 | /* Only register a CHANGE if we are polling and link changed |
1065 | * since latest checking. | |
e109374f | 1066 | */ |
d5c3d846 | 1067 | if (phydev->irq == PHY_POLL) { |
11e122cb SX |
1068 | old_link = phydev->link; |
1069 | err = phy_read_status(phydev); | |
1070 | if (err) | |
1071 | break; | |
1072 | ||
1073 | if (old_link != phydev->link) | |
1074 | phydev->state = PHY_CHANGELINK; | |
1075 | } | |
811a9191 ZK |
1076 | /* |
1077 | * Failsafe: check that nobody set phydev->link=0 between two | |
1078 | * poll cycles, otherwise we won't leave RUNNING state as long | |
1079 | * as link remains down. | |
1080 | */ | |
1081 | if (!phydev->link && phydev->state == PHY_RUNNING) { | |
1082 | phydev->state = PHY_CHANGELINK; | |
1083 | phydev_err(phydev, "no link in PHY_RUNNING\n"); | |
1084 | } | |
e109374f FF |
1085 | break; |
1086 | case PHY_CHANGELINK: | |
1087 | err = phy_read_status(phydev); | |
e109374f | 1088 | if (err) |
00db8189 | 1089 | break; |
00db8189 | 1090 | |
e109374f FF |
1091 | if (phydev->link) { |
1092 | phydev->state = PHY_RUNNING; | |
1093 | netif_carrier_on(phydev->attached_dev); | |
1094 | } else { | |
1095 | phydev->state = PHY_NOLINK; | |
1096 | netif_carrier_off(phydev->attached_dev); | |
1097 | } | |
00db8189 | 1098 | |
61a17965 | 1099 | phy_adjust_link(phydev); |
00db8189 | 1100 | |
e109374f FF |
1101 | if (phy_interrupt_is_valid(phydev)) |
1102 | err = phy_config_interrupt(phydev, | |
2f53e904 | 1103 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
1104 | break; |
1105 | case PHY_HALTED: | |
1106 | if (phydev->link) { | |
1107 | phydev->link = 0; | |
1108 | netif_carrier_off(phydev->attached_dev); | |
61a17965 | 1109 | phy_adjust_link(phydev); |
6e14a5ee | 1110 | do_suspend = true; |
e109374f FF |
1111 | } |
1112 | break; | |
1113 | case PHY_RESUMING: | |
e109374f FF |
1114 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1115 | err = phy_aneg_done(phydev); | |
1116 | if (err < 0) | |
00db8189 AF |
1117 | break; |
1118 | ||
e109374f | 1119 | /* err > 0 if AN is done. |
2f53e904 SS |
1120 | * Otherwise, it's 0, and we're still waiting for AN |
1121 | */ | |
e109374f | 1122 | if (err > 0) { |
42caa074 WF |
1123 | err = phy_read_status(phydev); |
1124 | if (err) | |
1125 | break; | |
1126 | ||
1127 | if (phydev->link) { | |
1128 | phydev->state = PHY_RUNNING; | |
1129 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 1130 | } else { |
42caa074 | 1131 | phydev->state = PHY_NOLINK; |
2f53e904 | 1132 | } |
61a17965 | 1133 | phy_adjust_link(phydev); |
e109374f FF |
1134 | } else { |
1135 | phydev->state = PHY_AN; | |
1136 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 1137 | } |
e109374f FF |
1138 | } else { |
1139 | err = phy_read_status(phydev); | |
1140 | if (err) | |
1141 | break; | |
1142 | ||
1143 | if (phydev->link) { | |
1144 | phydev->state = PHY_RUNNING; | |
1145 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 1146 | } else { |
e109374f | 1147 | phydev->state = PHY_NOLINK; |
2f53e904 | 1148 | } |
61a17965 | 1149 | phy_adjust_link(phydev); |
e109374f FF |
1150 | } |
1151 | break; | |
00db8189 AF |
1152 | } |
1153 | ||
35b5f6b1 | 1154 | mutex_unlock(&phydev->lock); |
00db8189 AF |
1155 | |
1156 | if (needs_aneg) | |
1157 | err = phy_start_aneg(phydev); | |
6e14a5ee | 1158 | else if (do_suspend) |
be9dad1f SH |
1159 | phy_suspend(phydev); |
1160 | ||
00db8189 AF |
1161 | if (err < 0) |
1162 | phy_error(phydev); | |
1163 | ||
72ba48be AL |
1164 | phydev_dbg(phydev, "PHY state change %s -> %s\n", |
1165 | phy_state_to_str(old_state), | |
1166 | phy_state_to_str(phydev->state)); | |
3e2186e0 | 1167 | |
d5c3d846 FF |
1168 | /* Only re-schedule a PHY state machine change if we are polling the |
1169 | * PHY, if PHY_IGNORE_INTERRUPT is set, then we will be moving | |
1170 | * between states from phy_mac_interrupt() | |
1171 | */ | |
1172 | if (phydev->irq == PHY_POLL) | |
1173 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, | |
1174 | PHY_STATE_TIME * HZ); | |
35b5f6b1 | 1175 | } |
a59a4d19 | 1176 | |
664fcf12 AL |
1177 | /** |
1178 | * phy_mac_interrupt - MAC says the link has changed | |
1179 | * @phydev: phy_device struct with changed link | |
1180 | * @new_link: Link is Up/Down. | |
1181 | * | |
1182 | * Description: The MAC layer is able indicate there has been a change | |
1183 | * in the PHY link status. Set the new link status, and trigger the | |
1184 | * state machine, work a work queue. | |
1185 | */ | |
5ea94e76 FF |
1186 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
1187 | { | |
5ea94e76 | 1188 | phydev->link = new_link; |
deccd16f FF |
1189 | |
1190 | /* Trigger a state machine change */ | |
1191 | queue_work(system_power_efficient_wq, &phydev->phy_queue); | |
5ea94e76 FF |
1192 | } |
1193 | EXPORT_SYMBOL(phy_mac_interrupt); | |
1194 | ||
a59a4d19 GC |
1195 | static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad, |
1196 | int addr) | |
1197 | { | |
1198 | /* Write the desired MMD Devad */ | |
1199 | bus->write(bus, addr, MII_MMD_CTRL, devad); | |
1200 | ||
1201 | /* Write the desired MMD register address */ | |
1202 | bus->write(bus, addr, MII_MMD_DATA, prtad); | |
1203 | ||
1204 | /* Select the Function : DATA with no post increment */ | |
1205 | bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
1206 | } | |
1207 | ||
1208 | /** | |
1209 | * phy_read_mmd_indirect - reads data from the MMD registers | |
0c1d77df | 1210 | * @phydev: The PHY device bus |
a59a4d19 GC |
1211 | * @prtad: MMD Address |
1212 | * @devad: MMD DEVAD | |
a59a4d19 GC |
1213 | * |
1214 | * Description: it reads data from the MMD registers (clause 22 to access to | |
1215 | * clause 45) of the specified phy address. | |
1216 | * To read these register we have: | |
1217 | * 1) Write reg 13 // DEVAD | |
1218 | * 2) Write reg 14 // MMD Address | |
1219 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
1220 | * 3) Read reg 14 // Read MMD data | |
1221 | */ | |
053e7e16 | 1222 | int phy_read_mmd_indirect(struct phy_device *phydev, int prtad, int devad) |
a59a4d19 | 1223 | { |
0c1d77df | 1224 | struct phy_driver *phydrv = phydev->drv; |
e5a03bfd | 1225 | int addr = phydev->mdio.addr; |
0c1d77df | 1226 | int value = -1; |
a59a4d19 | 1227 | |
ef899c07 | 1228 | if (!phydrv->read_mmd_indirect) { |
e5a03bfd | 1229 | struct mii_bus *bus = phydev->mdio.bus; |
05a7f582 RK |
1230 | |
1231 | mutex_lock(&bus->mdio_lock); | |
1232 | mmd_phy_indirect(bus, prtad, devad, addr); | |
0c1d77df VB |
1233 | |
1234 | /* Read the content of the MMD's selected register */ | |
05a7f582 RK |
1235 | value = bus->read(bus, addr, MII_MMD_DATA); |
1236 | mutex_unlock(&bus->mdio_lock); | |
0c1d77df VB |
1237 | } else { |
1238 | value = phydrv->read_mmd_indirect(phydev, prtad, devad, addr); | |
1239 | } | |
1240 | return value; | |
a59a4d19 | 1241 | } |
66ce7fb9 | 1242 | EXPORT_SYMBOL(phy_read_mmd_indirect); |
a59a4d19 GC |
1243 | |
1244 | /** | |
1245 | * phy_write_mmd_indirect - writes data to the MMD registers | |
0c1d77df | 1246 | * @phydev: The PHY device |
a59a4d19 GC |
1247 | * @prtad: MMD Address |
1248 | * @devad: MMD DEVAD | |
a59a4d19 GC |
1249 | * @data: data to write in the MMD register |
1250 | * | |
1251 | * Description: Write data from the MMD registers of the specified | |
1252 | * phy address. | |
1253 | * To write these register we have: | |
1254 | * 1) Write reg 13 // DEVAD | |
1255 | * 2) Write reg 14 // MMD Address | |
1256 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
1257 | * 3) Write reg 14 // Write MMD data | |
1258 | */ | |
66ce7fb9 | 1259 | void phy_write_mmd_indirect(struct phy_device *phydev, int prtad, |
053e7e16 | 1260 | int devad, u32 data) |
a59a4d19 | 1261 | { |
0c1d77df | 1262 | struct phy_driver *phydrv = phydev->drv; |
e5a03bfd | 1263 | int addr = phydev->mdio.addr; |
a59a4d19 | 1264 | |
ef899c07 | 1265 | if (!phydrv->write_mmd_indirect) { |
e5a03bfd | 1266 | struct mii_bus *bus = phydev->mdio.bus; |
05a7f582 RK |
1267 | |
1268 | mutex_lock(&bus->mdio_lock); | |
1269 | mmd_phy_indirect(bus, prtad, devad, addr); | |
0c1d77df VB |
1270 | |
1271 | /* Write the data into MMD's selected register */ | |
05a7f582 RK |
1272 | bus->write(bus, addr, MII_MMD_DATA, data); |
1273 | mutex_unlock(&bus->mdio_lock); | |
0c1d77df VB |
1274 | } else { |
1275 | phydrv->write_mmd_indirect(phydev, prtad, devad, addr, data); | |
1276 | } | |
a59a4d19 | 1277 | } |
66ce7fb9 | 1278 | EXPORT_SYMBOL(phy_write_mmd_indirect); |
a59a4d19 | 1279 | |
a59a4d19 GC |
1280 | /** |
1281 | * phy_init_eee - init and check the EEE feature | |
1282 | * @phydev: target phy_device struct | |
1283 | * @clk_stop_enable: PHY may stop the clock during LPI | |
1284 | * | |
1285 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
1286 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
1287 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
1288 | * bit if required. | |
1289 | */ | |
1290 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
1291 | { | |
25149ef9 FF |
1292 | if (!phydev->drv) |
1293 | return -EIO; | |
1294 | ||
a59a4d19 GC |
1295 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
1296 | * Also EEE feature is active when core is operating with MII, GMII | |
7e140696 FF |
1297 | * or RGMII (all kinds). Internal PHYs are also allowed to proceed and |
1298 | * should return an error if they do not support EEE. | |
a59a4d19 GC |
1299 | */ |
1300 | if ((phydev->duplex == DUPLEX_FULL) && | |
1301 | ((phydev->interface == PHY_INTERFACE_MODE_MII) || | |
1302 | (phydev->interface == PHY_INTERFACE_MODE_GMII) || | |
32a64161 | 1303 | phy_interface_is_rgmii(phydev) || |
a9f63095 | 1304 | phy_is_internal(phydev))) { |
a59a4d19 GC |
1305 | int eee_lp, eee_cap, eee_adv; |
1306 | u32 lp, cap, adv; | |
4ae6e50c | 1307 | int status; |
a59a4d19 GC |
1308 | |
1309 | /* Read phy status to properly get the right settings */ | |
1310 | status = phy_read_status(phydev); | |
1311 | if (status) | |
1312 | return status; | |
1313 | ||
1314 | /* First check if the EEE ability is supported */ | |
0c1d77df | 1315 | eee_cap = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE, |
053e7e16 | 1316 | MDIO_MMD_PCS); |
7a4cecf7 GC |
1317 | if (eee_cap <= 0) |
1318 | goto eee_exit_err; | |
a59a4d19 | 1319 | |
b32607dd | 1320 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 1321 | if (!cap) |
7a4cecf7 | 1322 | goto eee_exit_err; |
a59a4d19 GC |
1323 | |
1324 | /* Check which link settings negotiated and verify it in | |
1325 | * the EEE advertising registers. | |
1326 | */ | |
0c1d77df | 1327 | eee_lp = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_LPABLE, |
053e7e16 | 1328 | MDIO_MMD_AN); |
7a4cecf7 GC |
1329 | if (eee_lp <= 0) |
1330 | goto eee_exit_err; | |
a59a4d19 | 1331 | |
0c1d77df | 1332 | eee_adv = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV, |
053e7e16 | 1333 | MDIO_MMD_AN); |
7a4cecf7 GC |
1334 | if (eee_adv <= 0) |
1335 | goto eee_exit_err; | |
a59a4d19 | 1336 | |
b32607dd AB |
1337 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
1338 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
54da5a8b | 1339 | if (!phy_check_valid(phydev->speed, phydev->duplex, lp & adv)) |
7a4cecf7 | 1340 | goto eee_exit_err; |
a59a4d19 GC |
1341 | |
1342 | if (clk_stop_enable) { | |
1343 | /* Configure the PHY to stop receiving xMII | |
1344 | * clock while it is signaling LPI. | |
1345 | */ | |
0c1d77df | 1346 | int val = phy_read_mmd_indirect(phydev, MDIO_CTRL1, |
053e7e16 | 1347 | MDIO_MMD_PCS); |
a59a4d19 GC |
1348 | if (val < 0) |
1349 | return val; | |
1350 | ||
1351 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
0c1d77df | 1352 | phy_write_mmd_indirect(phydev, MDIO_CTRL1, |
053e7e16 | 1353 | MDIO_MMD_PCS, val); |
a59a4d19 GC |
1354 | } |
1355 | ||
e62a768f | 1356 | return 0; /* EEE supported */ |
a59a4d19 | 1357 | } |
7a4cecf7 | 1358 | eee_exit_err: |
e62a768f | 1359 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1360 | } |
1361 | EXPORT_SYMBOL(phy_init_eee); | |
1362 | ||
1363 | /** | |
1364 | * phy_get_eee_err - report the EEE wake error count | |
1365 | * @phydev: target phy_device struct | |
1366 | * | |
1367 | * Description: it is to report the number of time where the PHY | |
1368 | * failed to complete its normal wake sequence. | |
1369 | */ | |
1370 | int phy_get_eee_err(struct phy_device *phydev) | |
1371 | { | |
25149ef9 FF |
1372 | if (!phydev->drv) |
1373 | return -EIO; | |
1374 | ||
053e7e16 | 1375 | return phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_WK_ERR, MDIO_MMD_PCS); |
a59a4d19 GC |
1376 | } |
1377 | EXPORT_SYMBOL(phy_get_eee_err); | |
1378 | ||
1379 | /** | |
1380 | * phy_ethtool_get_eee - get EEE supported and status | |
1381 | * @phydev: target phy_device struct | |
1382 | * @data: ethtool_eee data | |
1383 | * | |
1384 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1385 | * capabilities. | |
1386 | */ | |
1387 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1388 | { | |
1389 | int val; | |
1390 | ||
25149ef9 FF |
1391 | if (!phydev->drv) |
1392 | return -EIO; | |
1393 | ||
a59a4d19 | 1394 | /* Get Supported EEE */ |
053e7e16 | 1395 | val = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE, MDIO_MMD_PCS); |
a59a4d19 GC |
1396 | if (val < 0) |
1397 | return val; | |
b32607dd | 1398 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1399 | |
1400 | /* Get advertisement EEE */ | |
053e7e16 | 1401 | val = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN); |
a59a4d19 GC |
1402 | if (val < 0) |
1403 | return val; | |
b32607dd | 1404 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1405 | |
1406 | /* Get LP advertisement EEE */ | |
053e7e16 | 1407 | val = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_LPABLE, MDIO_MMD_AN); |
a59a4d19 GC |
1408 | if (val < 0) |
1409 | return val; | |
b32607dd | 1410 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1411 | |
1412 | return 0; | |
1413 | } | |
1414 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1415 | ||
1416 | /** | |
1417 | * phy_ethtool_set_eee - set EEE supported and status | |
1418 | * @phydev: target phy_device struct | |
1419 | * @data: ethtool_eee data | |
1420 | * | |
1421 | * Description: it is to program the Advertisement EEE register. | |
1422 | */ | |
1423 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1424 | { | |
553fe92b | 1425 | int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised); |
a59a4d19 | 1426 | |
25149ef9 FF |
1427 | if (!phydev->drv) |
1428 | return -EIO; | |
1429 | ||
d853d145 | 1430 | /* Mask prohibited EEE modes */ |
1431 | val &= ~phydev->eee_broken_modes; | |
1432 | ||
053e7e16 | 1433 | phy_write_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN, val); |
a59a4d19 GC |
1434 | |
1435 | return 0; | |
1436 | } | |
1437 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1438 | |
1439 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1440 | { | |
25149ef9 | 1441 | if (phydev->drv && phydev->drv->set_wol) |
42e836eb MS |
1442 | return phydev->drv->set_wol(phydev, wol); |
1443 | ||
1444 | return -EOPNOTSUPP; | |
1445 | } | |
1446 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1447 | ||
1448 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1449 | { | |
25149ef9 | 1450 | if (phydev->drv && phydev->drv->get_wol) |
42e836eb MS |
1451 | phydev->drv->get_wol(phydev, wol); |
1452 | } | |
1453 | EXPORT_SYMBOL(phy_ethtool_get_wol); | |
9d9a77ce PR |
1454 | |
1455 | int phy_ethtool_get_link_ksettings(struct net_device *ndev, | |
1456 | struct ethtool_link_ksettings *cmd) | |
1457 | { | |
1458 | struct phy_device *phydev = ndev->phydev; | |
1459 | ||
1460 | if (!phydev) | |
1461 | return -ENODEV; | |
1462 | ||
1463 | return phy_ethtool_ksettings_get(phydev, cmd); | |
1464 | } | |
1465 | EXPORT_SYMBOL(phy_ethtool_get_link_ksettings); | |
1466 | ||
1467 | int phy_ethtool_set_link_ksettings(struct net_device *ndev, | |
1468 | const struct ethtool_link_ksettings *cmd) | |
1469 | { | |
1470 | struct phy_device *phydev = ndev->phydev; | |
1471 | ||
1472 | if (!phydev) | |
1473 | return -ENODEV; | |
1474 | ||
1475 | return phy_ethtool_ksettings_set(phydev, cmd); | |
1476 | } | |
1477 | EXPORT_SYMBOL(phy_ethtool_set_link_ksettings); | |
e86a8987 FF |
1478 | |
1479 | int phy_ethtool_nway_reset(struct net_device *ndev) | |
1480 | { | |
1481 | struct phy_device *phydev = ndev->phydev; | |
1482 | ||
1483 | if (!phydev) | |
1484 | return -ENODEV; | |
1485 | ||
25149ef9 FF |
1486 | if (!phydev->drv) |
1487 | return -EIO; | |
1488 | ||
e86a8987 FF |
1489 | return genphy_restart_aneg(phydev); |
1490 | } | |
1491 | EXPORT_SYMBOL(phy_ethtool_nway_reset); |