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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> | |
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 | ||
1004ee61 | 392 | phydev->mdix_ctrl = cmd->eth_tp_mdix_ctrl; |
634ec36c | 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 | ||
1004ee61 | 446 | phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; |
2d55173e PR |
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; |
1004ee61 RL |
472 | cmd->eth_tp_mdix_ctrl = phydev->mdix_ctrl; |
473 | cmd->eth_tp_mdix = phydev->mdix; | |
00db8189 AF |
474 | |
475 | return 0; | |
476 | } | |
9f6d55d0 | 477 | EXPORT_SYMBOL(phy_ethtool_gset); |
2d55173e PR |
478 | |
479 | int phy_ethtool_ksettings_get(struct phy_device *phydev, | |
480 | struct ethtool_link_ksettings *cmd) | |
481 | { | |
482 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, | |
483 | phydev->supported); | |
484 | ||
485 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, | |
486 | phydev->advertising); | |
487 | ||
488 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising, | |
489 | phydev->lp_advertising); | |
490 | ||
491 | cmd->base.speed = phydev->speed; | |
492 | cmd->base.duplex = phydev->duplex; | |
493 | if (phydev->interface == PHY_INTERFACE_MODE_MOCA) | |
494 | cmd->base.port = PORT_BNC; | |
495 | else | |
496 | cmd->base.port = PORT_MII; | |
497 | ||
498 | cmd->base.phy_address = phydev->mdio.addr; | |
499 | cmd->base.autoneg = phydev->autoneg; | |
1004ee61 RL |
500 | cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; |
501 | cmd->base.eth_tp_mdix = phydev->mdix; | |
2d55173e PR |
502 | |
503 | return 0; | |
504 | } | |
505 | EXPORT_SYMBOL(phy_ethtool_ksettings_get); | |
00db8189 | 506 | |
b3df0da8 RD |
507 | /** |
508 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
509 | * @phydev: the phy_device struct | |
00c7d920 | 510 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
511 | * @cmd: ioctl cmd to execute |
512 | * | |
513 | * Note that this function is currently incompatible with the | |
00db8189 | 514 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 515 | * current state. Use at own risk. |
00db8189 | 516 | */ |
2f53e904 | 517 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 518 | { |
28b04113 | 519 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 | 520 | u16 val = mii_data->val_in; |
79ce0477 | 521 | bool change_autoneg = false; |
00db8189 AF |
522 | |
523 | switch (cmd) { | |
524 | case SIOCGMIIPHY: | |
e5a03bfd | 525 | mii_data->phy_id = phydev->mdio.addr; |
c6d6a511 LB |
526 | /* fall through */ |
527 | ||
00db8189 | 528 | case SIOCGMIIREG: |
e5a03bfd AL |
529 | mii_data->val_out = mdiobus_read(phydev->mdio.bus, |
530 | mii_data->phy_id, | |
af1dc13e | 531 | mii_data->reg_num); |
e62a768f | 532 | return 0; |
00db8189 AF |
533 | |
534 | case SIOCSMIIREG: | |
e5a03bfd | 535 | if (mii_data->phy_id == phydev->mdio.addr) { |
e109374f | 536 | switch (mii_data->reg_num) { |
00db8189 | 537 | case MII_BMCR: |
79ce0477 BH |
538 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { |
539 | if (phydev->autoneg == AUTONEG_ENABLE) | |
540 | change_autoneg = true; | |
00db8189 | 541 | phydev->autoneg = AUTONEG_DISABLE; |
79ce0477 BH |
542 | if (val & BMCR_FULLDPLX) |
543 | phydev->duplex = DUPLEX_FULL; | |
544 | else | |
545 | phydev->duplex = DUPLEX_HALF; | |
546 | if (val & BMCR_SPEED1000) | |
547 | phydev->speed = SPEED_1000; | |
548 | else if (val & BMCR_SPEED100) | |
549 | phydev->speed = SPEED_100; | |
550 | else phydev->speed = SPEED_10; | |
551 | } | |
552 | else { | |
553 | if (phydev->autoneg == AUTONEG_DISABLE) | |
554 | change_autoneg = true; | |
00db8189 | 555 | phydev->autoneg = AUTONEG_ENABLE; |
79ce0477 | 556 | } |
00db8189 AF |
557 | break; |
558 | case MII_ADVERTISE: | |
79ce0477 BH |
559 | phydev->advertising = mii_adv_to_ethtool_adv_t(val); |
560 | change_autoneg = true; | |
00db8189 AF |
561 | break; |
562 | default: | |
563 | /* do nothing */ | |
564 | break; | |
565 | } | |
566 | } | |
567 | ||
e5a03bfd | 568 | mdiobus_write(phydev->mdio.bus, mii_data->phy_id, |
af1dc13e PK |
569 | mii_data->reg_num, val); |
570 | ||
e5a03bfd | 571 | if (mii_data->phy_id == phydev->mdio.addr && |
cf18b778 | 572 | mii_data->reg_num == MII_BMCR && |
2613f95f | 573 | val & BMCR_RESET) |
e62a768f | 574 | return phy_init_hw(phydev); |
79ce0477 BH |
575 | |
576 | if (change_autoneg) | |
577 | return phy_start_aneg(phydev); | |
578 | ||
e62a768f | 579 | return 0; |
dda93b48 | 580 | |
c1f19b51 RC |
581 | case SIOCSHWTSTAMP: |
582 | if (phydev->drv->hwtstamp) | |
583 | return phydev->drv->hwtstamp(phydev, ifr); | |
584 | /* fall through */ | |
585 | ||
dda93b48 | 586 | default: |
c6d6a511 | 587 | return -EOPNOTSUPP; |
00db8189 | 588 | } |
00db8189 | 589 | } |
680e9fe9 | 590 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 591 | |
b3df0da8 RD |
592 | /** |
593 | * phy_start_aneg - start auto-negotiation for this PHY device | |
594 | * @phydev: the phy_device struct | |
e1393456 | 595 | * |
b3df0da8 RD |
596 | * Description: Sanitizes the settings (if we're not autonegotiating |
597 | * them), and then calls the driver's config_aneg function. | |
598 | * If the PHYCONTROL Layer is operating, we change the state to | |
599 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 AF |
600 | */ |
601 | int phy_start_aneg(struct phy_device *phydev) | |
602 | { | |
603 | int err; | |
604 | ||
35b5f6b1 | 605 | mutex_lock(&phydev->lock); |
e1393456 AF |
606 | |
607 | if (AUTONEG_DISABLE == phydev->autoneg) | |
608 | phy_sanitize_settings(phydev); | |
609 | ||
9b3320ef BH |
610 | /* Invalidate LP advertising flags */ |
611 | phydev->lp_advertising = 0; | |
612 | ||
e1393456 | 613 | err = phydev->drv->config_aneg(phydev); |
e1393456 AF |
614 | if (err < 0) |
615 | goto out_unlock; | |
616 | ||
617 | if (phydev->state != PHY_HALTED) { | |
618 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
619 | phydev->state = PHY_AN; | |
620 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
621 | } else { | |
622 | phydev->state = PHY_FORCING; | |
623 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
624 | } | |
625 | } | |
626 | ||
627 | out_unlock: | |
35b5f6b1 | 628 | mutex_unlock(&phydev->lock); |
e1393456 AF |
629 | return err; |
630 | } | |
631 | EXPORT_SYMBOL(phy_start_aneg); | |
632 | ||
b3df0da8 RD |
633 | /** |
634 | * phy_start_machine - start PHY state machine tracking | |
635 | * @phydev: the phy_device struct | |
00db8189 | 636 | * |
b3df0da8 | 637 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
638 | * which tracks whether the PHY is starting up, negotiating, |
639 | * etc. This function starts the timer which tracks the state | |
29935aeb SS |
640 | * of the PHY. If you want to maintain your own state machine, |
641 | * do not call this function. | |
b3df0da8 | 642 | */ |
29935aeb | 643 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 644 | { |
bbb47bde | 645 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
646 | } |
647 | ||
3c293f4e AL |
648 | /** |
649 | * phy_trigger_machine - trigger the state machine to run | |
650 | * | |
651 | * @phydev: the phy_device struct | |
652 | * | |
653 | * Description: There has been a change in state which requires that the | |
654 | * state machine runs. | |
655 | */ | |
656 | ||
657 | static void phy_trigger_machine(struct phy_device *phydev) | |
658 | { | |
659 | cancel_delayed_work_sync(&phydev->state_queue); | |
660 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); | |
661 | } | |
662 | ||
b3df0da8 RD |
663 | /** |
664 | * phy_stop_machine - stop the PHY state machine tracking | |
665 | * @phydev: target phy_device struct | |
00db8189 | 666 | * |
b3df0da8 | 667 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 668 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
669 | * phy_detach. |
670 | */ | |
671 | void phy_stop_machine(struct phy_device *phydev) | |
672 | { | |
a390d1f3 | 673 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 674 | |
35b5f6b1 | 675 | mutex_lock(&phydev->lock); |
00db8189 AF |
676 | if (phydev->state > PHY_UP) |
677 | phydev->state = PHY_UP; | |
35b5f6b1 | 678 | mutex_unlock(&phydev->lock); |
00db8189 AF |
679 | } |
680 | ||
b3df0da8 RD |
681 | /** |
682 | * phy_error - enter HALTED state for this PHY device | |
683 | * @phydev: target phy_device struct | |
00db8189 AF |
684 | * |
685 | * Moves the PHY to the HALTED state in response to a read | |
686 | * or write error, and tells the controller the link is down. | |
687 | * Must not be called from interrupt context, or while the | |
688 | * phydev->lock is held. | |
689 | */ | |
9b9a8bfc | 690 | static void phy_error(struct phy_device *phydev) |
00db8189 | 691 | { |
35b5f6b1 | 692 | mutex_lock(&phydev->lock); |
00db8189 | 693 | phydev->state = PHY_HALTED; |
35b5f6b1 | 694 | mutex_unlock(&phydev->lock); |
3c293f4e AL |
695 | |
696 | phy_trigger_machine(phydev); | |
00db8189 AF |
697 | } |
698 | ||
b3df0da8 RD |
699 | /** |
700 | * phy_interrupt - PHY interrupt handler | |
701 | * @irq: interrupt line | |
702 | * @phy_dat: phy_device pointer | |
e1393456 | 703 | * |
b3df0da8 | 704 | * Description: When a PHY interrupt occurs, the handler disables |
664fcf12 | 705 | * interrupts, and uses phy_change to handle the interrupt. |
e1393456 | 706 | */ |
7d12e780 | 707 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
708 | { |
709 | struct phy_device *phydev = phy_dat; | |
710 | ||
3c3070d7 MR |
711 | if (PHY_HALTED == phydev->state) |
712 | return IRQ_NONE; /* It can't be ours. */ | |
713 | ||
e1393456 | 714 | disable_irq_nosync(irq); |
0ac49527 | 715 | atomic_inc(&phydev->irq_disable); |
e1393456 | 716 | |
664fcf12 | 717 | phy_change(phydev); |
e1393456 AF |
718 | |
719 | return IRQ_HANDLED; | |
720 | } | |
721 | ||
b3df0da8 RD |
722 | /** |
723 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
724 | * @phydev: target phy_device struct | |
725 | */ | |
89ff05ec | 726 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 727 | { |
553fe92b | 728 | int err = phy_clear_interrupt(phydev); |
00db8189 | 729 | |
e1393456 AF |
730 | if (err < 0) |
731 | return err; | |
00db8189 | 732 | |
553fe92b | 733 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 734 | } |
00db8189 | 735 | |
b3df0da8 RD |
736 | /** |
737 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
738 | * @phydev: target phy_device struct | |
739 | */ | |
89ff05ec | 740 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
741 | { |
742 | int err; | |
743 | ||
744 | /* Disable PHY interrupts */ | |
745 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
00db8189 AF |
746 | if (err) |
747 | goto phy_err; | |
748 | ||
749 | /* Clear the interrupt */ | |
750 | err = phy_clear_interrupt(phydev); | |
00db8189 AF |
751 | if (err) |
752 | goto phy_err; | |
753 | ||
754 | return 0; | |
755 | ||
756 | phy_err: | |
757 | phy_error(phydev); | |
758 | ||
759 | return err; | |
760 | } | |
e1393456 | 761 | |
b3df0da8 RD |
762 | /** |
763 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
764 | * @phydev: target phy_device struct | |
e1393456 | 765 | * |
b3df0da8 RD |
766 | * Description: Request the interrupt for the given PHY. |
767 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 768 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 769 | * This should only be called with a valid IRQ number. |
b3df0da8 | 770 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
771 | */ |
772 | int phy_start_interrupts(struct phy_device *phydev) | |
773 | { | |
0ac49527 | 774 | atomic_set(&phydev->irq_disable, 0); |
c974bdbc AL |
775 | if (request_threaded_irq(phydev->irq, NULL, phy_interrupt, |
776 | IRQF_ONESHOT | IRQF_SHARED, | |
ae0219cb | 777 | phydev_name(phydev), phydev) < 0) { |
8d242488 | 778 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
e5a03bfd | 779 | phydev->mdio.bus->name, phydev->irq); |
e1393456 AF |
780 | phydev->irq = PHY_POLL; |
781 | return 0; | |
782 | } | |
783 | ||
e62a768f | 784 | return phy_enable_interrupts(phydev); |
e1393456 AF |
785 | } |
786 | EXPORT_SYMBOL(phy_start_interrupts); | |
787 | ||
b3df0da8 RD |
788 | /** |
789 | * phy_stop_interrupts - disable interrupts from a PHY device | |
790 | * @phydev: target phy_device struct | |
791 | */ | |
e1393456 AF |
792 | int phy_stop_interrupts(struct phy_device *phydev) |
793 | { | |
553fe92b | 794 | int err = phy_disable_interrupts(phydev); |
e1393456 AF |
795 | |
796 | if (err) | |
797 | phy_error(phydev); | |
798 | ||
0ac49527 MR |
799 | free_irq(phydev->irq, phydev); |
800 | ||
2f53e904 | 801 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
802 | * been left unbalanced from phy_interrupt() and enable_irq() |
803 | * has to be called so that other devices on the line work. | |
804 | */ | |
805 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
806 | enable_irq(phydev->irq); | |
e1393456 AF |
807 | |
808 | return err; | |
809 | } | |
810 | EXPORT_SYMBOL(phy_stop_interrupts); | |
811 | ||
b3df0da8 | 812 | /** |
664fcf12 AL |
813 | * phy_change - Called by the phy_interrupt to handle PHY changes |
814 | * @phydev: phy_device struct that interrupted | |
b3df0da8 | 815 | */ |
664fcf12 | 816 | void phy_change(struct phy_device *phydev) |
e1393456 | 817 | { |
deccd16f FF |
818 | if (phy_interrupt_is_valid(phydev)) { |
819 | if (phydev->drv->did_interrupt && | |
820 | !phydev->drv->did_interrupt(phydev)) | |
821 | goto ignore; | |
a8729eb3 | 822 | |
deccd16f FF |
823 | if (phy_disable_interrupts(phydev)) |
824 | goto phy_err; | |
825 | } | |
e1393456 | 826 | |
35b5f6b1 | 827 | mutex_lock(&phydev->lock); |
e1393456 AF |
828 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
829 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 830 | mutex_unlock(&phydev->lock); |
e1393456 | 831 | |
deccd16f FF |
832 | if (phy_interrupt_is_valid(phydev)) { |
833 | atomic_dec(&phydev->irq_disable); | |
834 | enable_irq(phydev->irq); | |
e1393456 | 835 | |
deccd16f FF |
836 | /* Reenable interrupts */ |
837 | if (PHY_HALTED != phydev->state && | |
838 | phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) | |
839 | goto irq_enable_err; | |
840 | } | |
e1393456 | 841 | |
a390d1f3 | 842 | /* reschedule state queue work to run as soon as possible */ |
3c293f4e | 843 | phy_trigger_machine(phydev); |
e1393456 AF |
844 | return; |
845 | ||
a8729eb3 AG |
846 | ignore: |
847 | atomic_dec(&phydev->irq_disable); | |
848 | enable_irq(phydev->irq); | |
849 | return; | |
850 | ||
e1393456 AF |
851 | irq_enable_err: |
852 | disable_irq(phydev->irq); | |
0ac49527 | 853 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
854 | phy_err: |
855 | phy_error(phydev); | |
856 | } | |
857 | ||
664fcf12 AL |
858 | /** |
859 | * phy_change_work - Scheduled by the phy_mac_interrupt to handle PHY changes | |
860 | * @work: work_struct that describes the work to be done | |
861 | */ | |
862 | void phy_change_work(struct work_struct *work) | |
863 | { | |
864 | struct phy_device *phydev = | |
865 | container_of(work, struct phy_device, phy_queue); | |
866 | ||
867 | phy_change(phydev); | |
868 | } | |
869 | ||
b3df0da8 RD |
870 | /** |
871 | * phy_stop - Bring down the PHY link, and stop checking the status | |
872 | * @phydev: target phy_device struct | |
873 | */ | |
e1393456 AF |
874 | void phy_stop(struct phy_device *phydev) |
875 | { | |
35b5f6b1 | 876 | mutex_lock(&phydev->lock); |
e1393456 AF |
877 | |
878 | if (PHY_HALTED == phydev->state) | |
879 | goto out_unlock; | |
880 | ||
2c7b4921 | 881 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
882 | /* Disable PHY Interrupts */ |
883 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 884 | |
3c3070d7 MR |
885 | /* Clear any pending interrupts */ |
886 | phy_clear_interrupt(phydev); | |
887 | } | |
e1393456 | 888 | |
6daf6531 MR |
889 | phydev->state = PHY_HALTED; |
890 | ||
e1393456 | 891 | out_unlock: |
35b5f6b1 | 892 | mutex_unlock(&phydev->lock); |
3c3070d7 | 893 | |
2f53e904 | 894 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
895 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
896 | * will not reenable interrupts. | |
897 | */ | |
e1393456 | 898 | } |
2f53e904 | 899 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 900 | |
b3df0da8 RD |
901 | /** |
902 | * phy_start - start or restart a PHY device | |
903 | * @phydev: target phy_device struct | |
e1393456 | 904 | * |
b3df0da8 | 905 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
906 | * handle PHY-related work. Used during startup to start the |
907 | * PHY, and after a call to phy_stop() to resume operation. | |
908 | * Also used to indicate the MDIO bus has cleared an error | |
909 | * condition. | |
910 | */ | |
911 | void phy_start(struct phy_device *phydev) | |
912 | { | |
c15e10e7 TB |
913 | bool do_resume = false; |
914 | int err = 0; | |
915 | ||
35b5f6b1 | 916 | mutex_lock(&phydev->lock); |
e1393456 AF |
917 | |
918 | switch (phydev->state) { | |
e109374f FF |
919 | case PHY_STARTING: |
920 | phydev->state = PHY_PENDING; | |
921 | break; | |
922 | case PHY_READY: | |
923 | phydev->state = PHY_UP; | |
924 | break; | |
925 | case PHY_HALTED: | |
c15e10e7 | 926 | /* make sure interrupts are re-enabled for the PHY */ |
84a527a4 SX |
927 | if (phydev->irq != PHY_POLL) { |
928 | err = phy_enable_interrupts(phydev); | |
929 | if (err < 0) | |
930 | break; | |
931 | } | |
c15e10e7 | 932 | |
e109374f | 933 | phydev->state = PHY_RESUMING; |
c15e10e7 TB |
934 | do_resume = true; |
935 | break; | |
e109374f FF |
936 | default: |
937 | break; | |
e1393456 | 938 | } |
35b5f6b1 | 939 | mutex_unlock(&phydev->lock); |
c15e10e7 TB |
940 | |
941 | /* if phy was suspended, bring the physical link up again */ | |
942 | if (do_resume) | |
943 | phy_resume(phydev); | |
3c293f4e AL |
944 | |
945 | phy_trigger_machine(phydev); | |
e1393456 | 946 | } |
e1393456 | 947 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 948 | |
61a17965 ZB |
949 | static void phy_adjust_link(struct phy_device *phydev) |
950 | { | |
951 | phydev->adjust_link(phydev->attached_dev); | |
2e0bc452 | 952 | phy_led_trigger_change_speed(phydev); |
61a17965 ZB |
953 | } |
954 | ||
35b5f6b1 NC |
955 | /** |
956 | * phy_state_machine - Handle the state machine | |
957 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 958 | */ |
4f9c85a1 | 959 | void phy_state_machine(struct work_struct *work) |
00db8189 | 960 | { |
bf6aede7 | 961 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 962 | struct phy_device *phydev = |
a390d1f3 | 963 | container_of(dwork, struct phy_device, state_queue); |
c15e10e7 | 964 | bool needs_aneg = false, do_suspend = false; |
3e2186e0 | 965 | enum phy_state old_state; |
00db8189 | 966 | int err = 0; |
11e122cb | 967 | int old_link; |
00db8189 | 968 | |
35b5f6b1 | 969 | mutex_lock(&phydev->lock); |
00db8189 | 970 | |
3e2186e0 FF |
971 | old_state = phydev->state; |
972 | ||
2b8f2a28 DM |
973 | if (phydev->drv->link_change_notify) |
974 | phydev->drv->link_change_notify(phydev); | |
975 | ||
e109374f FF |
976 | switch (phydev->state) { |
977 | case PHY_DOWN: | |
978 | case PHY_STARTING: | |
979 | case PHY_READY: | |
980 | case PHY_PENDING: | |
981 | break; | |
982 | case PHY_UP: | |
6e14a5ee | 983 | needs_aneg = true; |
00db8189 | 984 | |
e109374f FF |
985 | phydev->link_timeout = PHY_AN_TIMEOUT; |
986 | ||
987 | break; | |
988 | case PHY_AN: | |
989 | err = phy_read_status(phydev); | |
e109374f | 990 | if (err < 0) |
00db8189 | 991 | break; |
6b655529 | 992 | |
2f53e904 | 993 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
994 | if (!phydev->link) { |
995 | phydev->state = PHY_NOLINK; | |
996 | netif_carrier_off(phydev->attached_dev); | |
61a17965 | 997 | phy_adjust_link(phydev); |
e109374f FF |
998 | break; |
999 | } | |
6b655529 | 1000 | |
2f53e904 | 1001 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
1002 | err = phy_aneg_done(phydev); |
1003 | if (err < 0) | |
1004 | break; | |
6b655529 | 1005 | |
e109374f FF |
1006 | /* If AN is done, we're running */ |
1007 | if (err > 0) { | |
1008 | phydev->state = PHY_RUNNING; | |
1009 | netif_carrier_on(phydev->attached_dev); | |
61a17965 | 1010 | phy_adjust_link(phydev); |
00db8189 | 1011 | |
fa8cddaf | 1012 | } else if (0 == phydev->link_timeout--) |
6e14a5ee | 1013 | needs_aneg = true; |
e109374f FF |
1014 | break; |
1015 | case PHY_NOLINK: | |
321beec5 AL |
1016 | if (phy_interrupt_is_valid(phydev)) |
1017 | break; | |
1018 | ||
e109374f | 1019 | err = phy_read_status(phydev); |
e109374f | 1020 | if (err) |
00db8189 | 1021 | break; |
00db8189 | 1022 | |
e109374f | 1023 | if (phydev->link) { |
e46e08b8 BK |
1024 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1025 | err = phy_aneg_done(phydev); | |
1026 | if (err < 0) | |
1027 | break; | |
1028 | ||
1029 | if (!err) { | |
1030 | phydev->state = PHY_AN; | |
1031 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
1032 | break; | |
1033 | } | |
1034 | } | |
e109374f FF |
1035 | phydev->state = PHY_RUNNING; |
1036 | netif_carrier_on(phydev->attached_dev); | |
61a17965 | 1037 | phy_adjust_link(phydev); |
e109374f FF |
1038 | } |
1039 | break; | |
1040 | case PHY_FORCING: | |
1041 | err = genphy_update_link(phydev); | |
e109374f | 1042 | if (err) |
00db8189 | 1043 | break; |
00db8189 | 1044 | |
e109374f FF |
1045 | if (phydev->link) { |
1046 | phydev->state = PHY_RUNNING; | |
1047 | netif_carrier_on(phydev->attached_dev); | |
1048 | } else { | |
1049 | if (0 == phydev->link_timeout--) | |
6e14a5ee | 1050 | needs_aneg = true; |
e109374f | 1051 | } |
00db8189 | 1052 | |
61a17965 | 1053 | phy_adjust_link(phydev); |
e109374f FF |
1054 | break; |
1055 | case PHY_RUNNING: | |
d5c3d846 FF |
1056 | /* Only register a CHANGE if we are polling and link changed |
1057 | * since latest checking. | |
e109374f | 1058 | */ |
d5c3d846 | 1059 | if (phydev->irq == PHY_POLL) { |
11e122cb SX |
1060 | old_link = phydev->link; |
1061 | err = phy_read_status(phydev); | |
1062 | if (err) | |
1063 | break; | |
1064 | ||
1065 | if (old_link != phydev->link) | |
1066 | phydev->state = PHY_CHANGELINK; | |
1067 | } | |
e109374f FF |
1068 | break; |
1069 | case PHY_CHANGELINK: | |
1070 | err = phy_read_status(phydev); | |
e109374f | 1071 | if (err) |
00db8189 | 1072 | break; |
00db8189 | 1073 | |
e109374f FF |
1074 | if (phydev->link) { |
1075 | phydev->state = PHY_RUNNING; | |
1076 | netif_carrier_on(phydev->attached_dev); | |
1077 | } else { | |
1078 | phydev->state = PHY_NOLINK; | |
1079 | netif_carrier_off(phydev->attached_dev); | |
1080 | } | |
00db8189 | 1081 | |
61a17965 | 1082 | phy_adjust_link(phydev); |
00db8189 | 1083 | |
e109374f FF |
1084 | if (phy_interrupt_is_valid(phydev)) |
1085 | err = phy_config_interrupt(phydev, | |
2f53e904 | 1086 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
1087 | break; |
1088 | case PHY_HALTED: | |
1089 | if (phydev->link) { | |
1090 | phydev->link = 0; | |
1091 | netif_carrier_off(phydev->attached_dev); | |
61a17965 | 1092 | phy_adjust_link(phydev); |
6e14a5ee | 1093 | do_suspend = true; |
e109374f FF |
1094 | } |
1095 | break; | |
1096 | case PHY_RESUMING: | |
e109374f FF |
1097 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1098 | err = phy_aneg_done(phydev); | |
1099 | if (err < 0) | |
00db8189 AF |
1100 | break; |
1101 | ||
e109374f | 1102 | /* err > 0 if AN is done. |
2f53e904 SS |
1103 | * Otherwise, it's 0, and we're still waiting for AN |
1104 | */ | |
e109374f | 1105 | if (err > 0) { |
42caa074 WF |
1106 | err = phy_read_status(phydev); |
1107 | if (err) | |
1108 | break; | |
1109 | ||
1110 | if (phydev->link) { | |
1111 | phydev->state = PHY_RUNNING; | |
1112 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 1113 | } else { |
42caa074 | 1114 | phydev->state = PHY_NOLINK; |
2f53e904 | 1115 | } |
61a17965 | 1116 | phy_adjust_link(phydev); |
e109374f FF |
1117 | } else { |
1118 | phydev->state = PHY_AN; | |
1119 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 1120 | } |
e109374f FF |
1121 | } else { |
1122 | err = phy_read_status(phydev); | |
1123 | if (err) | |
1124 | break; | |
1125 | ||
1126 | if (phydev->link) { | |
1127 | phydev->state = PHY_RUNNING; | |
1128 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 1129 | } else { |
e109374f | 1130 | phydev->state = PHY_NOLINK; |
2f53e904 | 1131 | } |
61a17965 | 1132 | phy_adjust_link(phydev); |
e109374f FF |
1133 | } |
1134 | break; | |
00db8189 AF |
1135 | } |
1136 | ||
35b5f6b1 | 1137 | mutex_unlock(&phydev->lock); |
00db8189 AF |
1138 | |
1139 | if (needs_aneg) | |
1140 | err = phy_start_aneg(phydev); | |
6e14a5ee | 1141 | else if (do_suspend) |
be9dad1f SH |
1142 | phy_suspend(phydev); |
1143 | ||
00db8189 AF |
1144 | if (err < 0) |
1145 | phy_error(phydev); | |
1146 | ||
72ba48be AL |
1147 | phydev_dbg(phydev, "PHY state change %s -> %s\n", |
1148 | phy_state_to_str(old_state), | |
1149 | phy_state_to_str(phydev->state)); | |
3e2186e0 | 1150 | |
d5c3d846 FF |
1151 | /* Only re-schedule a PHY state machine change if we are polling the |
1152 | * PHY, if PHY_IGNORE_INTERRUPT is set, then we will be moving | |
1153 | * between states from phy_mac_interrupt() | |
1154 | */ | |
1155 | if (phydev->irq == PHY_POLL) | |
1156 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, | |
1157 | PHY_STATE_TIME * HZ); | |
35b5f6b1 | 1158 | } |
a59a4d19 | 1159 | |
664fcf12 AL |
1160 | /** |
1161 | * phy_mac_interrupt - MAC says the link has changed | |
1162 | * @phydev: phy_device struct with changed link | |
1163 | * @new_link: Link is Up/Down. | |
1164 | * | |
1165 | * Description: The MAC layer is able indicate there has been a change | |
1166 | * in the PHY link status. Set the new link status, and trigger the | |
1167 | * state machine, work a work queue. | |
1168 | */ | |
5ea94e76 FF |
1169 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
1170 | { | |
5ea94e76 | 1171 | phydev->link = new_link; |
deccd16f FF |
1172 | |
1173 | /* Trigger a state machine change */ | |
1174 | queue_work(system_power_efficient_wq, &phydev->phy_queue); | |
5ea94e76 FF |
1175 | } |
1176 | EXPORT_SYMBOL(phy_mac_interrupt); | |
1177 | ||
a59a4d19 GC |
1178 | static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad, |
1179 | int addr) | |
1180 | { | |
1181 | /* Write the desired MMD Devad */ | |
1182 | bus->write(bus, addr, MII_MMD_CTRL, devad); | |
1183 | ||
1184 | /* Write the desired MMD register address */ | |
1185 | bus->write(bus, addr, MII_MMD_DATA, prtad); | |
1186 | ||
1187 | /* Select the Function : DATA with no post increment */ | |
1188 | bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
1189 | } | |
1190 | ||
1191 | /** | |
1192 | * phy_read_mmd_indirect - reads data from the MMD registers | |
0c1d77df | 1193 | * @phydev: The PHY device bus |
a59a4d19 GC |
1194 | * @prtad: MMD Address |
1195 | * @devad: MMD DEVAD | |
a59a4d19 GC |
1196 | * |
1197 | * Description: it reads data from the MMD registers (clause 22 to access to | |
1198 | * clause 45) of the specified phy address. | |
1199 | * To read these register we have: | |
1200 | * 1) Write reg 13 // DEVAD | |
1201 | * 2) Write reg 14 // MMD Address | |
1202 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
1203 | * 3) Read reg 14 // Read MMD data | |
1204 | */ | |
053e7e16 | 1205 | int phy_read_mmd_indirect(struct phy_device *phydev, int prtad, int devad) |
a59a4d19 | 1206 | { |
0c1d77df | 1207 | struct phy_driver *phydrv = phydev->drv; |
e5a03bfd | 1208 | int addr = phydev->mdio.addr; |
0c1d77df | 1209 | int value = -1; |
a59a4d19 | 1210 | |
ef899c07 | 1211 | if (!phydrv->read_mmd_indirect) { |
e5a03bfd | 1212 | struct mii_bus *bus = phydev->mdio.bus; |
05a7f582 RK |
1213 | |
1214 | mutex_lock(&bus->mdio_lock); | |
1215 | mmd_phy_indirect(bus, prtad, devad, addr); | |
0c1d77df VB |
1216 | |
1217 | /* Read the content of the MMD's selected register */ | |
05a7f582 RK |
1218 | value = bus->read(bus, addr, MII_MMD_DATA); |
1219 | mutex_unlock(&bus->mdio_lock); | |
0c1d77df VB |
1220 | } else { |
1221 | value = phydrv->read_mmd_indirect(phydev, prtad, devad, addr); | |
1222 | } | |
1223 | return value; | |
a59a4d19 | 1224 | } |
66ce7fb9 | 1225 | EXPORT_SYMBOL(phy_read_mmd_indirect); |
a59a4d19 GC |
1226 | |
1227 | /** | |
1228 | * phy_write_mmd_indirect - writes data to the MMD registers | |
0c1d77df | 1229 | * @phydev: The PHY device |
a59a4d19 GC |
1230 | * @prtad: MMD Address |
1231 | * @devad: MMD DEVAD | |
a59a4d19 GC |
1232 | * @data: data to write in the MMD register |
1233 | * | |
1234 | * Description: Write data from the MMD registers of the specified | |
1235 | * phy address. | |
1236 | * To write these register we have: | |
1237 | * 1) Write reg 13 // DEVAD | |
1238 | * 2) Write reg 14 // MMD Address | |
1239 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
1240 | * 3) Write reg 14 // Write MMD data | |
1241 | */ | |
66ce7fb9 | 1242 | void phy_write_mmd_indirect(struct phy_device *phydev, int prtad, |
053e7e16 | 1243 | int devad, u32 data) |
a59a4d19 | 1244 | { |
0c1d77df | 1245 | struct phy_driver *phydrv = phydev->drv; |
e5a03bfd | 1246 | int addr = phydev->mdio.addr; |
a59a4d19 | 1247 | |
ef899c07 | 1248 | if (!phydrv->write_mmd_indirect) { |
e5a03bfd | 1249 | struct mii_bus *bus = phydev->mdio.bus; |
05a7f582 RK |
1250 | |
1251 | mutex_lock(&bus->mdio_lock); | |
1252 | mmd_phy_indirect(bus, prtad, devad, addr); | |
0c1d77df VB |
1253 | |
1254 | /* Write the data into MMD's selected register */ | |
05a7f582 RK |
1255 | bus->write(bus, addr, MII_MMD_DATA, data); |
1256 | mutex_unlock(&bus->mdio_lock); | |
0c1d77df VB |
1257 | } else { |
1258 | phydrv->write_mmd_indirect(phydev, prtad, devad, addr, data); | |
1259 | } | |
a59a4d19 | 1260 | } |
66ce7fb9 | 1261 | EXPORT_SYMBOL(phy_write_mmd_indirect); |
a59a4d19 | 1262 | |
a59a4d19 GC |
1263 | /** |
1264 | * phy_init_eee - init and check the EEE feature | |
1265 | * @phydev: target phy_device struct | |
1266 | * @clk_stop_enable: PHY may stop the clock during LPI | |
1267 | * | |
1268 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
1269 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
1270 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
1271 | * bit if required. | |
1272 | */ | |
1273 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
1274 | { | |
a59a4d19 GC |
1275 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
1276 | * Also EEE feature is active when core is operating with MII, GMII | |
7e140696 FF |
1277 | * or RGMII (all kinds). Internal PHYs are also allowed to proceed and |
1278 | * should return an error if they do not support EEE. | |
a59a4d19 GC |
1279 | */ |
1280 | if ((phydev->duplex == DUPLEX_FULL) && | |
1281 | ((phydev->interface == PHY_INTERFACE_MODE_MII) || | |
1282 | (phydev->interface == PHY_INTERFACE_MODE_GMII) || | |
32a64161 | 1283 | phy_interface_is_rgmii(phydev) || |
a9f63095 | 1284 | phy_is_internal(phydev))) { |
a59a4d19 GC |
1285 | int eee_lp, eee_cap, eee_adv; |
1286 | u32 lp, cap, adv; | |
4ae6e50c | 1287 | int status; |
a59a4d19 GC |
1288 | |
1289 | /* Read phy status to properly get the right settings */ | |
1290 | status = phy_read_status(phydev); | |
1291 | if (status) | |
1292 | return status; | |
1293 | ||
1294 | /* First check if the EEE ability is supported */ | |
0c1d77df | 1295 | eee_cap = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE, |
053e7e16 | 1296 | MDIO_MMD_PCS); |
7a4cecf7 GC |
1297 | if (eee_cap <= 0) |
1298 | goto eee_exit_err; | |
a59a4d19 | 1299 | |
b32607dd | 1300 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 1301 | if (!cap) |
7a4cecf7 | 1302 | goto eee_exit_err; |
a59a4d19 GC |
1303 | |
1304 | /* Check which link settings negotiated and verify it in | |
1305 | * the EEE advertising registers. | |
1306 | */ | |
0c1d77df | 1307 | eee_lp = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_LPABLE, |
053e7e16 | 1308 | MDIO_MMD_AN); |
7a4cecf7 GC |
1309 | if (eee_lp <= 0) |
1310 | goto eee_exit_err; | |
a59a4d19 | 1311 | |
0c1d77df | 1312 | eee_adv = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV, |
053e7e16 | 1313 | MDIO_MMD_AN); |
7a4cecf7 GC |
1314 | if (eee_adv <= 0) |
1315 | goto eee_exit_err; | |
a59a4d19 | 1316 | |
b32607dd AB |
1317 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
1318 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
54da5a8b | 1319 | if (!phy_check_valid(phydev->speed, phydev->duplex, lp & adv)) |
7a4cecf7 | 1320 | goto eee_exit_err; |
a59a4d19 GC |
1321 | |
1322 | if (clk_stop_enable) { | |
1323 | /* Configure the PHY to stop receiving xMII | |
1324 | * clock while it is signaling LPI. | |
1325 | */ | |
0c1d77df | 1326 | int val = phy_read_mmd_indirect(phydev, MDIO_CTRL1, |
053e7e16 | 1327 | MDIO_MMD_PCS); |
a59a4d19 GC |
1328 | if (val < 0) |
1329 | return val; | |
1330 | ||
1331 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
0c1d77df | 1332 | phy_write_mmd_indirect(phydev, MDIO_CTRL1, |
053e7e16 | 1333 | MDIO_MMD_PCS, val); |
a59a4d19 GC |
1334 | } |
1335 | ||
e62a768f | 1336 | return 0; /* EEE supported */ |
a59a4d19 | 1337 | } |
7a4cecf7 | 1338 | eee_exit_err: |
e62a768f | 1339 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1340 | } |
1341 | EXPORT_SYMBOL(phy_init_eee); | |
1342 | ||
1343 | /** | |
1344 | * phy_get_eee_err - report the EEE wake error count | |
1345 | * @phydev: target phy_device struct | |
1346 | * | |
1347 | * Description: it is to report the number of time where the PHY | |
1348 | * failed to complete its normal wake sequence. | |
1349 | */ | |
1350 | int phy_get_eee_err(struct phy_device *phydev) | |
1351 | { | |
053e7e16 | 1352 | return phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_WK_ERR, MDIO_MMD_PCS); |
a59a4d19 GC |
1353 | } |
1354 | EXPORT_SYMBOL(phy_get_eee_err); | |
1355 | ||
1356 | /** | |
1357 | * phy_ethtool_get_eee - get EEE supported and status | |
1358 | * @phydev: target phy_device struct | |
1359 | * @data: ethtool_eee data | |
1360 | * | |
1361 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1362 | * capabilities. | |
1363 | */ | |
1364 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1365 | { | |
1366 | int val; | |
1367 | ||
1368 | /* Get Supported EEE */ | |
053e7e16 | 1369 | val = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE, MDIO_MMD_PCS); |
a59a4d19 GC |
1370 | if (val < 0) |
1371 | return val; | |
b32607dd | 1372 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1373 | |
1374 | /* Get advertisement EEE */ | |
053e7e16 | 1375 | val = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN); |
a59a4d19 GC |
1376 | if (val < 0) |
1377 | return val; | |
b32607dd | 1378 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1379 | |
1380 | /* Get LP advertisement EEE */ | |
053e7e16 | 1381 | val = phy_read_mmd_indirect(phydev, MDIO_AN_EEE_LPABLE, MDIO_MMD_AN); |
a59a4d19 GC |
1382 | if (val < 0) |
1383 | return val; | |
b32607dd | 1384 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1385 | |
1386 | return 0; | |
1387 | } | |
1388 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1389 | ||
1390 | /** | |
1391 | * phy_ethtool_set_eee - set EEE supported and status | |
1392 | * @phydev: target phy_device struct | |
1393 | * @data: ethtool_eee data | |
1394 | * | |
1395 | * Description: it is to program the Advertisement EEE register. | |
1396 | */ | |
1397 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1398 | { | |
553fe92b | 1399 | int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised); |
a59a4d19 | 1400 | |
d853d145 | 1401 | /* Mask prohibited EEE modes */ |
1402 | val &= ~phydev->eee_broken_modes; | |
1403 | ||
053e7e16 | 1404 | phy_write_mmd_indirect(phydev, MDIO_AN_EEE_ADV, MDIO_MMD_AN, val); |
a59a4d19 GC |
1405 | |
1406 | return 0; | |
1407 | } | |
1408 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1409 | |
1410 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1411 | { | |
1412 | if (phydev->drv->set_wol) | |
1413 | return phydev->drv->set_wol(phydev, wol); | |
1414 | ||
1415 | return -EOPNOTSUPP; | |
1416 | } | |
1417 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1418 | ||
1419 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1420 | { | |
1421 | if (phydev->drv->get_wol) | |
1422 | phydev->drv->get_wol(phydev, wol); | |
1423 | } | |
1424 | EXPORT_SYMBOL(phy_ethtool_get_wol); | |
9d9a77ce PR |
1425 | |
1426 | int phy_ethtool_get_link_ksettings(struct net_device *ndev, | |
1427 | struct ethtool_link_ksettings *cmd) | |
1428 | { | |
1429 | struct phy_device *phydev = ndev->phydev; | |
1430 | ||
1431 | if (!phydev) | |
1432 | return -ENODEV; | |
1433 | ||
1434 | return phy_ethtool_ksettings_get(phydev, cmd); | |
1435 | } | |
1436 | EXPORT_SYMBOL(phy_ethtool_get_link_ksettings); | |
1437 | ||
1438 | int phy_ethtool_set_link_ksettings(struct net_device *ndev, | |
1439 | const struct ethtool_link_ksettings *cmd) | |
1440 | { | |
1441 | struct phy_device *phydev = ndev->phydev; | |
1442 | ||
1443 | if (!phydev) | |
1444 | return -ENODEV; | |
1445 | ||
1446 | return phy_ethtool_ksettings_set(phydev, cmd); | |
1447 | } | |
1448 | EXPORT_SYMBOL(phy_ethtool_set_link_ksettings); | |
e86a8987 FF |
1449 | |
1450 | int phy_ethtool_nway_reset(struct net_device *ndev) | |
1451 | { | |
1452 | struct phy_device *phydev = ndev->phydev; | |
1453 | ||
1454 | if (!phydev) | |
1455 | return -ENODEV; | |
1456 | ||
1457 | return genphy_restart_aneg(phydev); | |
1458 | } | |
1459 | EXPORT_SYMBOL(phy_ethtool_nway_reset); |