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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 | 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"; | |
1f37b177 JP |
52 | case SPEED_5000: |
53 | return "5Gbps"; | |
766d1d38 FF |
54 | case SPEED_10000: |
55 | return "10Gbps"; | |
fc5b775d JP |
56 | case SPEED_14000: |
57 | return "14Gbps"; | |
1f37b177 JP |
58 | case SPEED_20000: |
59 | return "20Gbps"; | |
60 | case SPEED_25000: | |
61 | return "25Gbps"; | |
62 | case SPEED_40000: | |
63 | return "40Gbps"; | |
64 | case SPEED_50000: | |
65 | return "50Gbps"; | |
66 | case SPEED_56000: | |
67 | return "56Gbps"; | |
68 | case SPEED_100000: | |
69 | return "100Gbps"; | |
766d1d38 FF |
70 | case SPEED_UNKNOWN: |
71 | return "Unknown"; | |
72 | default: | |
73 | return "Unsupported (update phy.c)"; | |
74 | } | |
75 | } | |
76 | ||
3e2186e0 FF |
77 | #define PHY_STATE_STR(_state) \ |
78 | case PHY_##_state: \ | |
79 | return __stringify(_state); \ | |
80 | ||
81 | static const char *phy_state_to_str(enum phy_state st) | |
82 | { | |
83 | switch (st) { | |
84 | PHY_STATE_STR(DOWN) | |
85 | PHY_STATE_STR(STARTING) | |
86 | PHY_STATE_STR(READY) | |
87 | PHY_STATE_STR(PENDING) | |
88 | PHY_STATE_STR(UP) | |
89 | PHY_STATE_STR(AN) | |
90 | PHY_STATE_STR(RUNNING) | |
91 | PHY_STATE_STR(NOLINK) | |
92 | PHY_STATE_STR(FORCING) | |
93 | PHY_STATE_STR(CHANGELINK) | |
94 | PHY_STATE_STR(HALTED) | |
95 | PHY_STATE_STR(RESUMING) | |
96 | } | |
97 | ||
98 | return NULL; | |
99 | } | |
100 | ||
101 | ||
b3df0da8 RD |
102 | /** |
103 | * phy_print_status - Convenience function to print out the current phy status | |
104 | * @phydev: the phy_device struct | |
e1393456 AF |
105 | */ |
106 | void phy_print_status(struct phy_device *phydev) | |
107 | { | |
2f53e904 | 108 | if (phydev->link) { |
df40cc88 | 109 | netdev_info(phydev->attached_dev, |
766d1d38 FF |
110 | "Link is Up - %s/%s - flow control %s\n", |
111 | phy_speed_to_str(phydev->speed), | |
df40cc88 FF |
112 | DUPLEX_FULL == phydev->duplex ? "Full" : "Half", |
113 | phydev->pause ? "rx/tx" : "off"); | |
2f53e904 | 114 | } else { |
43b6329f | 115 | netdev_info(phydev->attached_dev, "Link is Down\n"); |
2f53e904 | 116 | } |
e1393456 AF |
117 | } |
118 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 119 | |
b3df0da8 RD |
120 | /** |
121 | * phy_clear_interrupt - Ack the phy device's interrupt | |
122 | * @phydev: the phy_device struct | |
123 | * | |
124 | * If the @phydev driver has an ack_interrupt function, call it to | |
125 | * ack and clear the phy device's interrupt. | |
126 | * | |
ad033506 | 127 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 128 | */ |
89ff05ec | 129 | static int phy_clear_interrupt(struct phy_device *phydev) |
00db8189 | 130 | { |
00db8189 | 131 | if (phydev->drv->ack_interrupt) |
e62a768f | 132 | return phydev->drv->ack_interrupt(phydev); |
00db8189 | 133 | |
e62a768f | 134 | return 0; |
00db8189 AF |
135 | } |
136 | ||
b3df0da8 RD |
137 | /** |
138 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
139 | * @phydev: the phy_device struct | |
140 | * @interrupts: interrupt flags to configure for this @phydev | |
141 | * | |
ad033506 | 142 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 143 | */ |
89ff05ec | 144 | static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
00db8189 | 145 | { |
00db8189 AF |
146 | phydev->interrupts = interrupts; |
147 | if (phydev->drv->config_intr) | |
e62a768f | 148 | return phydev->drv->config_intr(phydev); |
00db8189 | 149 | |
e62a768f | 150 | return 0; |
00db8189 AF |
151 | } |
152 | ||
002ba705 RK |
153 | /** |
154 | * phy_restart_aneg - restart auto-negotiation | |
155 | * @phydev: target phy_device struct | |
156 | * | |
157 | * Restart the autonegotiation on @phydev. Returns >= 0 on success or | |
158 | * negative errno on error. | |
159 | */ | |
160 | int phy_restart_aneg(struct phy_device *phydev) | |
161 | { | |
162 | int ret; | |
163 | ||
164 | if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0))) | |
165 | ret = genphy_c45_restart_aneg(phydev); | |
166 | else | |
167 | ret = genphy_restart_aneg(phydev); | |
168 | ||
169 | return ret; | |
170 | } | |
171 | EXPORT_SYMBOL_GPL(phy_restart_aneg); | |
00db8189 | 172 | |
b3df0da8 RD |
173 | /** |
174 | * phy_aneg_done - return auto-negotiation status | |
175 | * @phydev: target phy_device struct | |
00db8189 | 176 | * |
76a423a3 FF |
177 | * Description: Return the auto-negotiation status from this @phydev |
178 | * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation | |
179 | * is still pending. | |
00db8189 | 180 | */ |
372788f9 | 181 | int phy_aneg_done(struct phy_device *phydev) |
00db8189 | 182 | { |
65f2767a | 183 | if (phydev->drv && phydev->drv->aneg_done) |
76a423a3 FF |
184 | return phydev->drv->aneg_done(phydev); |
185 | ||
41408ad5 RK |
186 | /* Avoid genphy_aneg_done() if the Clause 45 PHY does not |
187 | * implement Clause 22 registers | |
188 | */ | |
189 | if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0))) | |
190 | return -EINVAL; | |
191 | ||
a9fa6e6a | 192 | return genphy_aneg_done(phydev); |
00db8189 | 193 | } |
372788f9 | 194 | EXPORT_SYMBOL(phy_aneg_done); |
00db8189 | 195 | |
00db8189 | 196 | /* A structure for mapping a particular speed and duplex |
2f53e904 SS |
197 | * combination to a particular SUPPORTED and ADVERTISED value |
198 | */ | |
00db8189 AF |
199 | struct phy_setting { |
200 | int speed; | |
201 | int duplex; | |
c3ecbe75 | 202 | int bit; |
00db8189 AF |
203 | }; |
204 | ||
d0613037 RK |
205 | /* A mapping of all SUPPORTED settings to speed/duplex. This table |
206 | * must be grouped by speed and sorted in descending match priority | |
207 | * - iow, descending speed. */ | |
f71e1309 | 208 | static const struct phy_setting settings[] = { |
00db8189 | 209 | { |
3e707706 LT |
210 | .speed = SPEED_10000, |
211 | .duplex = DUPLEX_FULL, | |
c3ecbe75 | 212 | .bit = ETHTOOL_LINK_MODE_10000baseKR_Full_BIT, |
3e707706 LT |
213 | }, |
214 | { | |
215 | .speed = SPEED_10000, | |
216 | .duplex = DUPLEX_FULL, | |
c3ecbe75 | 217 | .bit = ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT, |
3e707706 LT |
218 | }, |
219 | { | |
220 | .speed = SPEED_10000, | |
00db8189 | 221 | .duplex = DUPLEX_FULL, |
c3ecbe75 | 222 | .bit = ETHTOOL_LINK_MODE_10000baseT_Full_BIT, |
00db8189 | 223 | }, |
3e707706 LT |
224 | { |
225 | .speed = SPEED_2500, | |
226 | .duplex = DUPLEX_FULL, | |
c3ecbe75 | 227 | .bit = ETHTOOL_LINK_MODE_2500baseX_Full_BIT, |
3e707706 LT |
228 | }, |
229 | { | |
230 | .speed = SPEED_1000, | |
231 | .duplex = DUPLEX_FULL, | |
c3ecbe75 | 232 | .bit = ETHTOOL_LINK_MODE_1000baseKX_Full_BIT, |
3e707706 | 233 | }, |
00db8189 AF |
234 | { |
235 | .speed = SPEED_1000, | |
236 | .duplex = DUPLEX_FULL, | |
c3ecbe75 | 237 | .bit = ETHTOOL_LINK_MODE_1000baseT_Full_BIT, |
00db8189 AF |
238 | }, |
239 | { | |
240 | .speed = SPEED_1000, | |
241 | .duplex = DUPLEX_HALF, | |
c3ecbe75 | 242 | .bit = ETHTOOL_LINK_MODE_1000baseT_Half_BIT, |
00db8189 AF |
243 | }, |
244 | { | |
245 | .speed = SPEED_100, | |
246 | .duplex = DUPLEX_FULL, | |
c3ecbe75 | 247 | .bit = ETHTOOL_LINK_MODE_100baseT_Full_BIT, |
00db8189 AF |
248 | }, |
249 | { | |
250 | .speed = SPEED_100, | |
251 | .duplex = DUPLEX_HALF, | |
c3ecbe75 | 252 | .bit = ETHTOOL_LINK_MODE_100baseT_Half_BIT, |
00db8189 AF |
253 | }, |
254 | { | |
255 | .speed = SPEED_10, | |
256 | .duplex = DUPLEX_FULL, | |
c3ecbe75 | 257 | .bit = ETHTOOL_LINK_MODE_10baseT_Full_BIT, |
00db8189 AF |
258 | }, |
259 | { | |
260 | .speed = SPEED_10, | |
261 | .duplex = DUPLEX_HALF, | |
c3ecbe75 | 262 | .bit = ETHTOOL_LINK_MODE_10baseT_Half_BIT, |
00db8189 AF |
263 | }, |
264 | }; | |
265 | ||
b3df0da8 | 266 | /** |
d0613037 | 267 | * phy_lookup_setting - lookup a PHY setting |
b3df0da8 RD |
268 | * @speed: speed to match |
269 | * @duplex: duplex to match | |
c3ecbe75 RK |
270 | * @mask: allowed link modes |
271 | * @maxbit: bit size of link modes | |
d0613037 RK |
272 | * @exact: an exact match is required |
273 | * | |
274 | * Search the settings array for a setting that matches the speed and | |
275 | * duplex, and which is supported. | |
00db8189 | 276 | * |
d0613037 RK |
277 | * If @exact is unset, either an exact match or %NULL for no match will |
278 | * be returned. | |
279 | * | |
280 | * If @exact is set, an exact match, the fastest supported setting at | |
281 | * or below the specified speed, the slowest supported setting, or if | |
282 | * they all fail, %NULL will be returned. | |
00db8189 | 283 | */ |
d0613037 | 284 | static const struct phy_setting * |
c3ecbe75 RK |
285 | phy_lookup_setting(int speed, int duplex, const unsigned long *mask, |
286 | size_t maxbit, bool exact) | |
00db8189 | 287 | { |
d0613037 RK |
288 | const struct phy_setting *p, *match = NULL, *last = NULL; |
289 | int i; | |
290 | ||
291 | for (i = 0, p = settings; i < ARRAY_SIZE(settings); i++, p++) { | |
c3ecbe75 | 292 | if (p->bit < maxbit && test_bit(p->bit, mask)) { |
d0613037 RK |
293 | last = p; |
294 | if (p->speed == speed && p->duplex == duplex) { | |
295 | /* Exact match for speed and duplex */ | |
296 | match = p; | |
297 | break; | |
298 | } else if (!exact) { | |
299 | if (!match && p->speed <= speed) | |
300 | /* Candidate */ | |
301 | match = p; | |
302 | ||
303 | if (p->speed < speed) | |
304 | break; | |
305 | } | |
306 | } | |
307 | } | |
00db8189 | 308 | |
d0613037 RK |
309 | if (!match && !exact) |
310 | match = last; | |
00db8189 | 311 | |
d0613037 | 312 | return match; |
00db8189 AF |
313 | } |
314 | ||
b3df0da8 | 315 | /** |
d0613037 RK |
316 | * phy_find_valid - find a PHY setting that matches the requested parameters |
317 | * @speed: desired speed | |
318 | * @duplex: desired duplex | |
319 | * @supported: mask of supported link modes | |
00db8189 | 320 | * |
d0613037 RK |
321 | * Locate a supported phy setting that is, in priority order: |
322 | * - an exact match for the specified speed and duplex mode | |
323 | * - a match for the specified speed, or slower speed | |
324 | * - the slowest supported speed | |
325 | * Returns the matched phy_setting entry, or %NULL if no supported phy | |
326 | * settings were found. | |
00db8189 | 327 | */ |
d0613037 RK |
328 | static const struct phy_setting * |
329 | phy_find_valid(int speed, int duplex, u32 supported) | |
00db8189 | 330 | { |
c3ecbe75 RK |
331 | unsigned long mask = supported; |
332 | ||
333 | return phy_lookup_setting(speed, duplex, &mask, BITS_PER_LONG, false); | |
00db8189 AF |
334 | } |
335 | ||
1f9127ca ZB |
336 | /** |
337 | * phy_supported_speeds - return all speeds currently supported by a phy device | |
338 | * @phy: The phy device to return supported speeds of. | |
339 | * @speeds: buffer to store supported speeds in. | |
340 | * @size: size of speeds buffer. | |
341 | * | |
342 | * Description: Returns the number of supported speeds, and fills the speeds | |
343 | * buffer with the supported speeds. If speeds buffer is too small to contain | |
344 | * all currently supported speeds, will return as many speeds as can fit. | |
345 | */ | |
346 | unsigned int phy_supported_speeds(struct phy_device *phy, | |
347 | unsigned int *speeds, | |
348 | unsigned int size) | |
349 | { | |
c3ecbe75 | 350 | unsigned long supported = phy->supported; |
1f9127ca ZB |
351 | unsigned int count = 0; |
352 | unsigned int idx = 0; | |
353 | ||
786df9c2 | 354 | for (idx = 0; idx < ARRAY_SIZE(settings) && count < size; idx++) |
1f9127ca | 355 | /* Assumes settings are grouped by speed */ |
c3ecbe75 RK |
356 | if (settings[idx].bit < BITS_PER_LONG && |
357 | !test_bit(settings[idx].bit, &supported) && | |
786df9c2 RK |
358 | (count == 0 || speeds[count - 1] != settings[idx].speed)) |
359 | speeds[count++] = settings[idx].speed; | |
1f9127ca ZB |
360 | |
361 | return count; | |
362 | } | |
363 | ||
54da5a8b GR |
364 | /** |
365 | * phy_check_valid - check if there is a valid PHY setting which matches | |
366 | * speed, duplex, and feature mask | |
367 | * @speed: speed to match | |
368 | * @duplex: duplex to match | |
369 | * @features: A mask of the valid settings | |
370 | * | |
371 | * Description: Returns true if there is a valid setting, false otherwise. | |
372 | */ | |
373 | static inline bool phy_check_valid(int speed, int duplex, u32 features) | |
374 | { | |
c3ecbe75 RK |
375 | unsigned long mask = features; |
376 | ||
377 | return !!phy_lookup_setting(speed, duplex, &mask, BITS_PER_LONG, true); | |
54da5a8b GR |
378 | } |
379 | ||
b3df0da8 RD |
380 | /** |
381 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
382 | * @phydev: the target phy_device struct | |
00db8189 | 383 | * |
b3df0da8 | 384 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 385 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 386 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 387 | */ |
89ff05ec | 388 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 | 389 | { |
d0613037 | 390 | const struct phy_setting *setting; |
00db8189 | 391 | u32 features = phydev->supported; |
00db8189 AF |
392 | |
393 | /* Sanitize settings based on PHY capabilities */ | |
394 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 395 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 | 396 | |
d0613037 RK |
397 | setting = phy_find_valid(phydev->speed, phydev->duplex, features); |
398 | if (setting) { | |
399 | phydev->speed = setting->speed; | |
400 | phydev->duplex = setting->duplex; | |
401 | } else { | |
402 | /* We failed to find anything (no supported speeds?) */ | |
403 | phydev->speed = SPEED_UNKNOWN; | |
404 | phydev->duplex = DUPLEX_UNKNOWN; | |
405 | } | |
00db8189 | 406 | } |
00db8189 | 407 | |
b3df0da8 RD |
408 | /** |
409 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
410 | * @phydev: target phy_device struct | |
411 | * @cmd: ethtool_cmd | |
00db8189 AF |
412 | * |
413 | * A few notes about parameter checking: | |
d651983d | 414 | * |
00db8189 AF |
415 | * - We don't set port or transceiver, so we don't care what they |
416 | * were set to. | |
417 | * - phy_start_aneg() will make sure forced settings are sane, and | |
418 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 419 | * care if ethtool tries to give us bad values. |
00db8189 AF |
420 | */ |
421 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
422 | { | |
25db0338 DD |
423 | u32 speed = ethtool_cmd_speed(cmd); |
424 | ||
e5a03bfd | 425 | if (cmd->phy_address != phydev->mdio.addr) |
00db8189 AF |
426 | return -EINVAL; |
427 | ||
2f53e904 | 428 | /* We make sure that we don't pass unsupported values in to the PHY */ |
00db8189 AF |
429 | cmd->advertising &= phydev->supported; |
430 | ||
431 | /* Verify the settings we care about. */ | |
432 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
433 | return -EINVAL; | |
434 | ||
435 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
436 | return -EINVAL; | |
437 | ||
8e95a202 | 438 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
439 | ((speed != SPEED_1000 && |
440 | speed != SPEED_100 && | |
441 | speed != SPEED_10) || | |
8e95a202 JP |
442 | (cmd->duplex != DUPLEX_HALF && |
443 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
444 | return -EINVAL; |
445 | ||
446 | phydev->autoneg = cmd->autoneg; | |
447 | ||
25db0338 | 448 | phydev->speed = speed; |
00db8189 AF |
449 | |
450 | phydev->advertising = cmd->advertising; | |
451 | ||
452 | if (AUTONEG_ENABLE == cmd->autoneg) | |
453 | phydev->advertising |= ADVERTISED_Autoneg; | |
454 | else | |
455 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
456 | ||
457 | phydev->duplex = cmd->duplex; | |
458 | ||
1004ee61 | 459 | phydev->mdix_ctrl = cmd->eth_tp_mdix_ctrl; |
634ec36c | 460 | |
00db8189 AF |
461 | /* Restart the PHY */ |
462 | phy_start_aneg(phydev); | |
463 | ||
464 | return 0; | |
465 | } | |
9f6d55d0 | 466 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 | 467 | |
2d55173e PR |
468 | int phy_ethtool_ksettings_set(struct phy_device *phydev, |
469 | const struct ethtool_link_ksettings *cmd) | |
470 | { | |
471 | u8 autoneg = cmd->base.autoneg; | |
472 | u8 duplex = cmd->base.duplex; | |
473 | u32 speed = cmd->base.speed; | |
474 | u32 advertising; | |
475 | ||
476 | if (cmd->base.phy_address != phydev->mdio.addr) | |
477 | return -EINVAL; | |
478 | ||
479 | ethtool_convert_link_mode_to_legacy_u32(&advertising, | |
480 | cmd->link_modes.advertising); | |
481 | ||
482 | /* We make sure that we don't pass unsupported values in to the PHY */ | |
483 | advertising &= phydev->supported; | |
484 | ||
485 | /* Verify the settings we care about. */ | |
486 | if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) | |
487 | return -EINVAL; | |
488 | ||
489 | if (autoneg == AUTONEG_ENABLE && advertising == 0) | |
490 | return -EINVAL; | |
491 | ||
492 | if (autoneg == AUTONEG_DISABLE && | |
493 | ((speed != SPEED_1000 && | |
494 | speed != SPEED_100 && | |
495 | speed != SPEED_10) || | |
496 | (duplex != DUPLEX_HALF && | |
497 | duplex != DUPLEX_FULL))) | |
498 | return -EINVAL; | |
499 | ||
500 | phydev->autoneg = autoneg; | |
501 | ||
502 | phydev->speed = speed; | |
503 | ||
504 | phydev->advertising = advertising; | |
505 | ||
506 | if (autoneg == AUTONEG_ENABLE) | |
507 | phydev->advertising |= ADVERTISED_Autoneg; | |
508 | else | |
509 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
510 | ||
511 | phydev->duplex = duplex; | |
512 | ||
1004ee61 | 513 | phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; |
2d55173e PR |
514 | |
515 | /* Restart the PHY */ | |
516 | phy_start_aneg(phydev); | |
517 | ||
518 | return 0; | |
519 | } | |
520 | EXPORT_SYMBOL(phy_ethtool_ksettings_set); | |
521 | ||
5514174f | 522 | void phy_ethtool_ksettings_get(struct phy_device *phydev, |
523 | struct ethtool_link_ksettings *cmd) | |
2d55173e PR |
524 | { |
525 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, | |
526 | phydev->supported); | |
527 | ||
528 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, | |
529 | phydev->advertising); | |
530 | ||
531 | ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising, | |
532 | phydev->lp_advertising); | |
533 | ||
534 | cmd->base.speed = phydev->speed; | |
535 | cmd->base.duplex = phydev->duplex; | |
536 | if (phydev->interface == PHY_INTERFACE_MODE_MOCA) | |
537 | cmd->base.port = PORT_BNC; | |
538 | else | |
539 | cmd->base.port = PORT_MII; | |
540 | ||
541 | cmd->base.phy_address = phydev->mdio.addr; | |
542 | cmd->base.autoneg = phydev->autoneg; | |
1004ee61 RL |
543 | cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; |
544 | cmd->base.eth_tp_mdix = phydev->mdix; | |
2d55173e PR |
545 | } |
546 | EXPORT_SYMBOL(phy_ethtool_ksettings_get); | |
00db8189 | 547 | |
b3df0da8 RD |
548 | /** |
549 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
550 | * @phydev: the phy_device struct | |
00c7d920 | 551 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
552 | * @cmd: ioctl cmd to execute |
553 | * | |
554 | * Note that this function is currently incompatible with the | |
00db8189 | 555 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 556 | * current state. Use at own risk. |
00db8189 | 557 | */ |
2f53e904 | 558 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 559 | { |
28b04113 | 560 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 | 561 | u16 val = mii_data->val_in; |
79ce0477 | 562 | bool change_autoneg = false; |
00db8189 AF |
563 | |
564 | switch (cmd) { | |
565 | case SIOCGMIIPHY: | |
e5a03bfd | 566 | mii_data->phy_id = phydev->mdio.addr; |
c6d6a511 LB |
567 | /* fall through */ |
568 | ||
00db8189 | 569 | case SIOCGMIIREG: |
e5a03bfd AL |
570 | mii_data->val_out = mdiobus_read(phydev->mdio.bus, |
571 | mii_data->phy_id, | |
af1dc13e | 572 | mii_data->reg_num); |
e62a768f | 573 | return 0; |
00db8189 AF |
574 | |
575 | case SIOCSMIIREG: | |
e5a03bfd | 576 | if (mii_data->phy_id == phydev->mdio.addr) { |
e109374f | 577 | switch (mii_data->reg_num) { |
00db8189 | 578 | case MII_BMCR: |
79ce0477 BH |
579 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { |
580 | if (phydev->autoneg == AUTONEG_ENABLE) | |
581 | change_autoneg = true; | |
00db8189 | 582 | phydev->autoneg = AUTONEG_DISABLE; |
79ce0477 BH |
583 | if (val & BMCR_FULLDPLX) |
584 | phydev->duplex = DUPLEX_FULL; | |
585 | else | |
586 | phydev->duplex = DUPLEX_HALF; | |
587 | if (val & BMCR_SPEED1000) | |
588 | phydev->speed = SPEED_1000; | |
589 | else if (val & BMCR_SPEED100) | |
590 | phydev->speed = SPEED_100; | |
591 | else phydev->speed = SPEED_10; | |
592 | } | |
593 | else { | |
594 | if (phydev->autoneg == AUTONEG_DISABLE) | |
595 | change_autoneg = true; | |
00db8189 | 596 | phydev->autoneg = AUTONEG_ENABLE; |
79ce0477 | 597 | } |
00db8189 AF |
598 | break; |
599 | case MII_ADVERTISE: | |
79ce0477 BH |
600 | phydev->advertising = mii_adv_to_ethtool_adv_t(val); |
601 | change_autoneg = true; | |
00db8189 AF |
602 | break; |
603 | default: | |
604 | /* do nothing */ | |
605 | break; | |
606 | } | |
607 | } | |
608 | ||
e5a03bfd | 609 | mdiobus_write(phydev->mdio.bus, mii_data->phy_id, |
af1dc13e PK |
610 | mii_data->reg_num, val); |
611 | ||
e5a03bfd | 612 | if (mii_data->phy_id == phydev->mdio.addr && |
cf18b778 | 613 | mii_data->reg_num == MII_BMCR && |
2613f95f | 614 | val & BMCR_RESET) |
e62a768f | 615 | return phy_init_hw(phydev); |
79ce0477 BH |
616 | |
617 | if (change_autoneg) | |
618 | return phy_start_aneg(phydev); | |
619 | ||
e62a768f | 620 | return 0; |
dda93b48 | 621 | |
c1f19b51 | 622 | case SIOCSHWTSTAMP: |
25149ef9 | 623 | if (phydev->drv && phydev->drv->hwtstamp) |
c1f19b51 RC |
624 | return phydev->drv->hwtstamp(phydev, ifr); |
625 | /* fall through */ | |
626 | ||
dda93b48 | 627 | default: |
c6d6a511 | 628 | return -EOPNOTSUPP; |
00db8189 | 629 | } |
00db8189 | 630 | } |
680e9fe9 | 631 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 632 | |
b3df0da8 | 633 | /** |
f555f34f | 634 | * phy_start_aneg_priv - start auto-negotiation for this PHY device |
b3df0da8 | 635 | * @phydev: the phy_device struct |
f555f34f | 636 | * @sync: indicate whether we should wait for the workqueue cancelation |
e1393456 | 637 | * |
b3df0da8 RD |
638 | * Description: Sanitizes the settings (if we're not autonegotiating |
639 | * them), and then calls the driver's config_aneg function. | |
640 | * If the PHYCONTROL Layer is operating, we change the state to | |
641 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 | 642 | */ |
f555f34f | 643 | static int phy_start_aneg_priv(struct phy_device *phydev, bool sync) |
e1393456 | 644 | { |
f555f34f | 645 | bool trigger = 0; |
e1393456 AF |
646 | int err; |
647 | ||
25149ef9 FF |
648 | if (!phydev->drv) |
649 | return -EIO; | |
650 | ||
35b5f6b1 | 651 | mutex_lock(&phydev->lock); |
e1393456 AF |
652 | |
653 | if (AUTONEG_DISABLE == phydev->autoneg) | |
654 | phy_sanitize_settings(phydev); | |
655 | ||
9b3320ef BH |
656 | /* Invalidate LP advertising flags */ |
657 | phydev->lp_advertising = 0; | |
658 | ||
e1393456 | 659 | err = phydev->drv->config_aneg(phydev); |
e1393456 AF |
660 | if (err < 0) |
661 | goto out_unlock; | |
662 | ||
663 | if (phydev->state != PHY_HALTED) { | |
664 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
665 | phydev->state = PHY_AN; | |
666 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
667 | } else { | |
668 | phydev->state = PHY_FORCING; | |
669 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
670 | } | |
671 | } | |
672 | ||
f555f34f AK |
673 | /* Re-schedule a PHY state machine to check PHY status because |
674 | * negotiation may already be done and aneg interrupt may not be | |
675 | * generated. | |
676 | */ | |
677 | if (phy_interrupt_is_valid(phydev) && (phydev->state == PHY_AN)) { | |
678 | err = phy_aneg_done(phydev); | |
679 | if (err > 0) { | |
680 | trigger = true; | |
681 | err = 0; | |
682 | } | |
683 | } | |
684 | ||
e1393456 | 685 | out_unlock: |
35b5f6b1 | 686 | mutex_unlock(&phydev->lock); |
f555f34f AK |
687 | |
688 | if (trigger) | |
689 | phy_trigger_machine(phydev, sync); | |
690 | ||
e1393456 AF |
691 | return err; |
692 | } | |
f555f34f AK |
693 | |
694 | /** | |
695 | * phy_start_aneg - start auto-negotiation for this PHY device | |
696 | * @phydev: the phy_device struct | |
697 | * | |
698 | * Description: Sanitizes the settings (if we're not autonegotiating | |
699 | * them), and then calls the driver's config_aneg function. | |
700 | * If the PHYCONTROL Layer is operating, we change the state to | |
701 | * reflect the beginning of Auto-negotiation or forcing. | |
702 | */ | |
703 | int phy_start_aneg(struct phy_device *phydev) | |
704 | { | |
705 | return phy_start_aneg_priv(phydev, true); | |
706 | } | |
e1393456 AF |
707 | EXPORT_SYMBOL(phy_start_aneg); |
708 | ||
b3df0da8 RD |
709 | /** |
710 | * phy_start_machine - start PHY state machine tracking | |
711 | * @phydev: the phy_device struct | |
00db8189 | 712 | * |
b3df0da8 | 713 | * Description: The PHY infrastructure can run a state machine |
00db8189 | 714 | * which tracks whether the PHY is starting up, negotiating, |
fb5e7606 FF |
715 | * etc. This function starts the delayed workqueue which tracks |
716 | * the state of the PHY. If you want to maintain your own state machine, | |
29935aeb | 717 | * do not call this function. |
b3df0da8 | 718 | */ |
29935aeb | 719 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 720 | { |
bbb47bde | 721 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
722 | } |
723 | ||
3c293f4e AL |
724 | /** |
725 | * phy_trigger_machine - trigger the state machine to run | |
726 | * | |
727 | * @phydev: the phy_device struct | |
eab12771 | 728 | * @sync: indicate whether we should wait for the workqueue cancelation |
3c293f4e AL |
729 | * |
730 | * Description: There has been a change in state which requires that the | |
731 | * state machine runs. | |
732 | */ | |
733 | ||
f555f34f | 734 | void phy_trigger_machine(struct phy_device *phydev, bool sync) |
3c293f4e | 735 | { |
eab12771 FF |
736 | if (sync) |
737 | cancel_delayed_work_sync(&phydev->state_queue); | |
738 | else | |
739 | cancel_delayed_work(&phydev->state_queue); | |
3c293f4e AL |
740 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); |
741 | } | |
742 | ||
b3df0da8 RD |
743 | /** |
744 | * phy_stop_machine - stop the PHY state machine tracking | |
745 | * @phydev: target phy_device struct | |
00db8189 | 746 | * |
fb5e7606 FF |
747 | * Description: Stops the state machine delayed workqueue, sets the |
748 | * state to UP (unless it wasn't up yet). This function must be | |
749 | * called BEFORE phy_detach. | |
00db8189 AF |
750 | */ |
751 | void phy_stop_machine(struct phy_device *phydev) | |
752 | { | |
a390d1f3 | 753 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 754 | |
35b5f6b1 | 755 | mutex_lock(&phydev->lock); |
49d52e81 | 756 | if (phydev->state > PHY_UP && phydev->state != PHY_HALTED) |
00db8189 | 757 | phydev->state = PHY_UP; |
35b5f6b1 | 758 | mutex_unlock(&phydev->lock); |
7ad813f2 FF |
759 | |
760 | /* Now we can run the state machine synchronously */ | |
761 | phy_state_machine(&phydev->state_queue.work); | |
00db8189 AF |
762 | } |
763 | ||
b3df0da8 RD |
764 | /** |
765 | * phy_error - enter HALTED state for this PHY device | |
766 | * @phydev: target phy_device struct | |
00db8189 AF |
767 | * |
768 | * Moves the PHY to the HALTED state in response to a read | |
769 | * or write error, and tells the controller the link is down. | |
770 | * Must not be called from interrupt context, or while the | |
771 | * phydev->lock is held. | |
772 | */ | |
9b9a8bfc | 773 | static void phy_error(struct phy_device *phydev) |
00db8189 | 774 | { |
35b5f6b1 | 775 | mutex_lock(&phydev->lock); |
00db8189 | 776 | phydev->state = PHY_HALTED; |
35b5f6b1 | 777 | mutex_unlock(&phydev->lock); |
3c293f4e | 778 | |
eab12771 | 779 | phy_trigger_machine(phydev, false); |
00db8189 AF |
780 | } |
781 | ||
b3df0da8 RD |
782 | /** |
783 | * phy_interrupt - PHY interrupt handler | |
784 | * @irq: interrupt line | |
785 | * @phy_dat: phy_device pointer | |
e1393456 | 786 | * |
b3df0da8 | 787 | * Description: When a PHY interrupt occurs, the handler disables |
664fcf12 | 788 | * interrupts, and uses phy_change to handle the interrupt. |
e1393456 | 789 | */ |
7d12e780 | 790 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
791 | { |
792 | struct phy_device *phydev = phy_dat; | |
793 | ||
3c3070d7 MR |
794 | if (PHY_HALTED == phydev->state) |
795 | return IRQ_NONE; /* It can't be ours. */ | |
796 | ||
e1393456 | 797 | disable_irq_nosync(irq); |
0ac49527 | 798 | atomic_inc(&phydev->irq_disable); |
e1393456 | 799 | |
664fcf12 | 800 | phy_change(phydev); |
e1393456 AF |
801 | |
802 | return IRQ_HANDLED; | |
803 | } | |
804 | ||
b3df0da8 RD |
805 | /** |
806 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
807 | * @phydev: target phy_device struct | |
808 | */ | |
89ff05ec | 809 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 810 | { |
553fe92b | 811 | int err = phy_clear_interrupt(phydev); |
00db8189 | 812 | |
e1393456 AF |
813 | if (err < 0) |
814 | return err; | |
00db8189 | 815 | |
553fe92b | 816 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 817 | } |
00db8189 | 818 | |
b3df0da8 RD |
819 | /** |
820 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
821 | * @phydev: target phy_device struct | |
822 | */ | |
89ff05ec | 823 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
824 | { |
825 | int err; | |
826 | ||
827 | /* Disable PHY interrupts */ | |
828 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
00db8189 AF |
829 | if (err) |
830 | goto phy_err; | |
831 | ||
832 | /* Clear the interrupt */ | |
833 | err = phy_clear_interrupt(phydev); | |
00db8189 AF |
834 | if (err) |
835 | goto phy_err; | |
836 | ||
837 | return 0; | |
838 | ||
839 | phy_err: | |
840 | phy_error(phydev); | |
841 | ||
842 | return err; | |
843 | } | |
e1393456 | 844 | |
b3df0da8 RD |
845 | /** |
846 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
847 | * @phydev: target phy_device struct | |
e1393456 | 848 | * |
b3df0da8 RD |
849 | * Description: Request the interrupt for the given PHY. |
850 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 851 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 852 | * This should only be called with a valid IRQ number. |
b3df0da8 | 853 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
854 | */ |
855 | int phy_start_interrupts(struct phy_device *phydev) | |
856 | { | |
0ac49527 | 857 | atomic_set(&phydev->irq_disable, 0); |
c974bdbc AL |
858 | if (request_threaded_irq(phydev->irq, NULL, phy_interrupt, |
859 | IRQF_ONESHOT | IRQF_SHARED, | |
ae0219cb | 860 | phydev_name(phydev), phydev) < 0) { |
8d242488 | 861 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
e5a03bfd | 862 | phydev->mdio.bus->name, phydev->irq); |
e1393456 AF |
863 | phydev->irq = PHY_POLL; |
864 | return 0; | |
865 | } | |
866 | ||
e62a768f | 867 | return phy_enable_interrupts(phydev); |
e1393456 AF |
868 | } |
869 | EXPORT_SYMBOL(phy_start_interrupts); | |
870 | ||
b3df0da8 RD |
871 | /** |
872 | * phy_stop_interrupts - disable interrupts from a PHY device | |
873 | * @phydev: target phy_device struct | |
874 | */ | |
e1393456 AF |
875 | int phy_stop_interrupts(struct phy_device *phydev) |
876 | { | |
553fe92b | 877 | int err = phy_disable_interrupts(phydev); |
e1393456 AF |
878 | |
879 | if (err) | |
880 | phy_error(phydev); | |
881 | ||
0ac49527 MR |
882 | free_irq(phydev->irq, phydev); |
883 | ||
2f53e904 | 884 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
885 | * been left unbalanced from phy_interrupt() and enable_irq() |
886 | * has to be called so that other devices on the line work. | |
887 | */ | |
888 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
889 | enable_irq(phydev->irq); | |
e1393456 AF |
890 | |
891 | return err; | |
892 | } | |
893 | EXPORT_SYMBOL(phy_stop_interrupts); | |
894 | ||
b3df0da8 | 895 | /** |
664fcf12 AL |
896 | * phy_change - Called by the phy_interrupt to handle PHY changes |
897 | * @phydev: phy_device struct that interrupted | |
b3df0da8 | 898 | */ |
664fcf12 | 899 | void phy_change(struct phy_device *phydev) |
e1393456 | 900 | { |
deccd16f FF |
901 | if (phy_interrupt_is_valid(phydev)) { |
902 | if (phydev->drv->did_interrupt && | |
903 | !phydev->drv->did_interrupt(phydev)) | |
904 | goto ignore; | |
a8729eb3 | 905 | |
deccd16f FF |
906 | if (phy_disable_interrupts(phydev)) |
907 | goto phy_err; | |
908 | } | |
e1393456 | 909 | |
35b5f6b1 | 910 | mutex_lock(&phydev->lock); |
e1393456 AF |
911 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
912 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 913 | mutex_unlock(&phydev->lock); |
e1393456 | 914 | |
deccd16f FF |
915 | if (phy_interrupt_is_valid(phydev)) { |
916 | atomic_dec(&phydev->irq_disable); | |
917 | enable_irq(phydev->irq); | |
e1393456 | 918 | |
deccd16f FF |
919 | /* Reenable interrupts */ |
920 | if (PHY_HALTED != phydev->state && | |
921 | phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) | |
922 | goto irq_enable_err; | |
923 | } | |
e1393456 | 924 | |
a390d1f3 | 925 | /* reschedule state queue work to run as soon as possible */ |
eab12771 | 926 | phy_trigger_machine(phydev, true); |
e1393456 AF |
927 | return; |
928 | ||
a8729eb3 AG |
929 | ignore: |
930 | atomic_dec(&phydev->irq_disable); | |
931 | enable_irq(phydev->irq); | |
932 | return; | |
933 | ||
e1393456 AF |
934 | irq_enable_err: |
935 | disable_irq(phydev->irq); | |
0ac49527 | 936 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
937 | phy_err: |
938 | phy_error(phydev); | |
939 | } | |
940 | ||
664fcf12 AL |
941 | /** |
942 | * phy_change_work - Scheduled by the phy_mac_interrupt to handle PHY changes | |
943 | * @work: work_struct that describes the work to be done | |
944 | */ | |
945 | void phy_change_work(struct work_struct *work) | |
946 | { | |
947 | struct phy_device *phydev = | |
948 | container_of(work, struct phy_device, phy_queue); | |
949 | ||
950 | phy_change(phydev); | |
951 | } | |
952 | ||
b3df0da8 RD |
953 | /** |
954 | * phy_stop - Bring down the PHY link, and stop checking the status | |
955 | * @phydev: target phy_device struct | |
956 | */ | |
e1393456 AF |
957 | void phy_stop(struct phy_device *phydev) |
958 | { | |
35b5f6b1 | 959 | mutex_lock(&phydev->lock); |
e1393456 AF |
960 | |
961 | if (PHY_HALTED == phydev->state) | |
962 | goto out_unlock; | |
963 | ||
2c7b4921 | 964 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
965 | /* Disable PHY Interrupts */ |
966 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 967 | |
3c3070d7 MR |
968 | /* Clear any pending interrupts */ |
969 | phy_clear_interrupt(phydev); | |
970 | } | |
e1393456 | 971 | |
6daf6531 MR |
972 | phydev->state = PHY_HALTED; |
973 | ||
e1393456 | 974 | out_unlock: |
35b5f6b1 | 975 | mutex_unlock(&phydev->lock); |
3c3070d7 | 976 | |
2f53e904 | 977 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
978 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
979 | * will not reenable interrupts. | |
980 | */ | |
e1393456 | 981 | } |
2f53e904 | 982 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 983 | |
b3df0da8 RD |
984 | /** |
985 | * phy_start - start or restart a PHY device | |
986 | * @phydev: target phy_device struct | |
e1393456 | 987 | * |
b3df0da8 | 988 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
989 | * handle PHY-related work. Used during startup to start the |
990 | * PHY, and after a call to phy_stop() to resume operation. | |
991 | * Also used to indicate the MDIO bus has cleared an error | |
992 | * condition. | |
993 | */ | |
994 | void phy_start(struct phy_device *phydev) | |
995 | { | |
c15e10e7 TB |
996 | bool do_resume = false; |
997 | int err = 0; | |
998 | ||
35b5f6b1 | 999 | mutex_lock(&phydev->lock); |
e1393456 AF |
1000 | |
1001 | switch (phydev->state) { | |
e109374f FF |
1002 | case PHY_STARTING: |
1003 | phydev->state = PHY_PENDING; | |
1004 | break; | |
1005 | case PHY_READY: | |
1006 | phydev->state = PHY_UP; | |
1007 | break; | |
1008 | case PHY_HALTED: | |
c15e10e7 | 1009 | /* make sure interrupts are re-enabled for the PHY */ |
84a527a4 SX |
1010 | if (phydev->irq != PHY_POLL) { |
1011 | err = phy_enable_interrupts(phydev); | |
1012 | if (err < 0) | |
1013 | break; | |
1014 | } | |
c15e10e7 | 1015 | |
e109374f | 1016 | phydev->state = PHY_RESUMING; |
c15e10e7 TB |
1017 | do_resume = true; |
1018 | break; | |
e109374f FF |
1019 | default: |
1020 | break; | |
e1393456 | 1021 | } |
35b5f6b1 | 1022 | mutex_unlock(&phydev->lock); |
c15e10e7 TB |
1023 | |
1024 | /* if phy was suspended, bring the physical link up again */ | |
1025 | if (do_resume) | |
1026 | phy_resume(phydev); | |
3c293f4e | 1027 | |
eab12771 | 1028 | phy_trigger_machine(phydev, true); |
e1393456 | 1029 | } |
e1393456 | 1030 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 1031 | |
61a17965 ZB |
1032 | static void phy_adjust_link(struct phy_device *phydev) |
1033 | { | |
1034 | phydev->adjust_link(phydev->attached_dev); | |
2e0bc452 | 1035 | phy_led_trigger_change_speed(phydev); |
61a17965 ZB |
1036 | } |
1037 | ||
35b5f6b1 NC |
1038 | /** |
1039 | * phy_state_machine - Handle the state machine | |
1040 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 1041 | */ |
4f9c85a1 | 1042 | void phy_state_machine(struct work_struct *work) |
00db8189 | 1043 | { |
bf6aede7 | 1044 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 1045 | struct phy_device *phydev = |
a390d1f3 | 1046 | container_of(dwork, struct phy_device, state_queue); |
c15e10e7 | 1047 | bool needs_aneg = false, do_suspend = false; |
3e2186e0 | 1048 | enum phy_state old_state; |
00db8189 | 1049 | int err = 0; |
11e122cb | 1050 | int old_link; |
00db8189 | 1051 | |
35b5f6b1 | 1052 | mutex_lock(&phydev->lock); |
00db8189 | 1053 | |
3e2186e0 FF |
1054 | old_state = phydev->state; |
1055 | ||
25149ef9 | 1056 | if (phydev->drv && phydev->drv->link_change_notify) |
2b8f2a28 DM |
1057 | phydev->drv->link_change_notify(phydev); |
1058 | ||
e109374f FF |
1059 | switch (phydev->state) { |
1060 | case PHY_DOWN: | |
1061 | case PHY_STARTING: | |
1062 | case PHY_READY: | |
1063 | case PHY_PENDING: | |
1064 | break; | |
1065 | case PHY_UP: | |
6e14a5ee | 1066 | needs_aneg = true; |
00db8189 | 1067 | |
e109374f FF |
1068 | phydev->link_timeout = PHY_AN_TIMEOUT; |
1069 | ||
1070 | break; | |
1071 | case PHY_AN: | |
1072 | err = phy_read_status(phydev); | |
e109374f | 1073 | if (err < 0) |
00db8189 | 1074 | break; |
6b655529 | 1075 | |
2f53e904 | 1076 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
1077 | if (!phydev->link) { |
1078 | phydev->state = PHY_NOLINK; | |
1079 | netif_carrier_off(phydev->attached_dev); | |
61a17965 | 1080 | phy_adjust_link(phydev); |
e109374f FF |
1081 | break; |
1082 | } | |
6b655529 | 1083 | |
2f53e904 | 1084 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
1085 | err = phy_aneg_done(phydev); |
1086 | if (err < 0) | |
1087 | break; | |
6b655529 | 1088 | |
e109374f FF |
1089 | /* If AN is done, we're running */ |
1090 | if (err > 0) { | |
1091 | phydev->state = PHY_RUNNING; | |
1092 | netif_carrier_on(phydev->attached_dev); | |
61a17965 | 1093 | phy_adjust_link(phydev); |
00db8189 | 1094 | |
fa8cddaf | 1095 | } else if (0 == phydev->link_timeout--) |
6e14a5ee | 1096 | needs_aneg = true; |
e109374f FF |
1097 | break; |
1098 | case PHY_NOLINK: | |
321beec5 AL |
1099 | if (phy_interrupt_is_valid(phydev)) |
1100 | break; | |
1101 | ||
e109374f | 1102 | err = phy_read_status(phydev); |
e109374f | 1103 | if (err) |
00db8189 | 1104 | break; |
00db8189 | 1105 | |
e109374f | 1106 | if (phydev->link) { |
e46e08b8 BK |
1107 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1108 | err = phy_aneg_done(phydev); | |
1109 | if (err < 0) | |
1110 | break; | |
1111 | ||
1112 | if (!err) { | |
1113 | phydev->state = PHY_AN; | |
1114 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
1115 | break; | |
1116 | } | |
1117 | } | |
e109374f FF |
1118 | phydev->state = PHY_RUNNING; |
1119 | netif_carrier_on(phydev->attached_dev); | |
61a17965 | 1120 | phy_adjust_link(phydev); |
e109374f FF |
1121 | } |
1122 | break; | |
1123 | case PHY_FORCING: | |
1124 | err = genphy_update_link(phydev); | |
e109374f | 1125 | if (err) |
00db8189 | 1126 | break; |
00db8189 | 1127 | |
e109374f FF |
1128 | if (phydev->link) { |
1129 | phydev->state = PHY_RUNNING; | |
1130 | netif_carrier_on(phydev->attached_dev); | |
1131 | } else { | |
1132 | if (0 == phydev->link_timeout--) | |
6e14a5ee | 1133 | needs_aneg = true; |
e109374f | 1134 | } |
00db8189 | 1135 | |
61a17965 | 1136 | phy_adjust_link(phydev); |
e109374f FF |
1137 | break; |
1138 | case PHY_RUNNING: | |
d5c3d846 FF |
1139 | /* Only register a CHANGE if we are polling and link changed |
1140 | * since latest checking. | |
e109374f | 1141 | */ |
d5c3d846 | 1142 | if (phydev->irq == PHY_POLL) { |
11e122cb SX |
1143 | old_link = phydev->link; |
1144 | err = phy_read_status(phydev); | |
1145 | if (err) | |
1146 | break; | |
1147 | ||
1148 | if (old_link != phydev->link) | |
1149 | phydev->state = PHY_CHANGELINK; | |
1150 | } | |
811a9191 ZK |
1151 | /* |
1152 | * Failsafe: check that nobody set phydev->link=0 between two | |
1153 | * poll cycles, otherwise we won't leave RUNNING state as long | |
1154 | * as link remains down. | |
1155 | */ | |
1156 | if (!phydev->link && phydev->state == PHY_RUNNING) { | |
1157 | phydev->state = PHY_CHANGELINK; | |
1158 | phydev_err(phydev, "no link in PHY_RUNNING\n"); | |
1159 | } | |
e109374f FF |
1160 | break; |
1161 | case PHY_CHANGELINK: | |
1162 | err = phy_read_status(phydev); | |
e109374f | 1163 | if (err) |
00db8189 | 1164 | break; |
00db8189 | 1165 | |
e109374f FF |
1166 | if (phydev->link) { |
1167 | phydev->state = PHY_RUNNING; | |
1168 | netif_carrier_on(phydev->attached_dev); | |
1169 | } else { | |
1170 | phydev->state = PHY_NOLINK; | |
1171 | netif_carrier_off(phydev->attached_dev); | |
1172 | } | |
00db8189 | 1173 | |
61a17965 | 1174 | phy_adjust_link(phydev); |
00db8189 | 1175 | |
e109374f FF |
1176 | if (phy_interrupt_is_valid(phydev)) |
1177 | err = phy_config_interrupt(phydev, | |
2f53e904 | 1178 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
1179 | break; |
1180 | case PHY_HALTED: | |
1181 | if (phydev->link) { | |
1182 | phydev->link = 0; | |
1183 | netif_carrier_off(phydev->attached_dev); | |
61a17965 | 1184 | phy_adjust_link(phydev); |
6e14a5ee | 1185 | do_suspend = true; |
e109374f FF |
1186 | } |
1187 | break; | |
1188 | case PHY_RESUMING: | |
e109374f FF |
1189 | if (AUTONEG_ENABLE == phydev->autoneg) { |
1190 | err = phy_aneg_done(phydev); | |
1191 | if (err < 0) | |
00db8189 AF |
1192 | break; |
1193 | ||
e109374f | 1194 | /* err > 0 if AN is done. |
2f53e904 SS |
1195 | * Otherwise, it's 0, and we're still waiting for AN |
1196 | */ | |
e109374f | 1197 | if (err > 0) { |
42caa074 WF |
1198 | err = phy_read_status(phydev); |
1199 | if (err) | |
1200 | break; | |
1201 | ||
1202 | if (phydev->link) { | |
1203 | phydev->state = PHY_RUNNING; | |
1204 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 1205 | } else { |
42caa074 | 1206 | phydev->state = PHY_NOLINK; |
2f53e904 | 1207 | } |
61a17965 | 1208 | phy_adjust_link(phydev); |
e109374f FF |
1209 | } else { |
1210 | phydev->state = PHY_AN; | |
1211 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 1212 | } |
e109374f FF |
1213 | } else { |
1214 | err = phy_read_status(phydev); | |
1215 | if (err) | |
1216 | break; | |
1217 | ||
1218 | if (phydev->link) { | |
1219 | phydev->state = PHY_RUNNING; | |
1220 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 1221 | } else { |
e109374f | 1222 | phydev->state = PHY_NOLINK; |
2f53e904 | 1223 | } |
61a17965 | 1224 | phy_adjust_link(phydev); |
e109374f FF |
1225 | } |
1226 | break; | |
00db8189 AF |
1227 | } |
1228 | ||
35b5f6b1 | 1229 | mutex_unlock(&phydev->lock); |
00db8189 AF |
1230 | |
1231 | if (needs_aneg) | |
f555f34f | 1232 | err = phy_start_aneg_priv(phydev, false); |
6e14a5ee | 1233 | else if (do_suspend) |
be9dad1f SH |
1234 | phy_suspend(phydev); |
1235 | ||
00db8189 AF |
1236 | if (err < 0) |
1237 | phy_error(phydev); | |
1238 | ||
6a95befc MG |
1239 | if (old_state != phydev->state) |
1240 | phydev_dbg(phydev, "PHY state change %s -> %s\n", | |
1241 | phy_state_to_str(old_state), | |
1242 | phy_state_to_str(phydev->state)); | |
3e2186e0 | 1243 | |
d5c3d846 FF |
1244 | /* Only re-schedule a PHY state machine change if we are polling the |
1245 | * PHY, if PHY_IGNORE_INTERRUPT is set, then we will be moving | |
1246 | * between states from phy_mac_interrupt() | |
1247 | */ | |
1248 | if (phydev->irq == PHY_POLL) | |
1249 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, | |
1250 | PHY_STATE_TIME * HZ); | |
35b5f6b1 | 1251 | } |
a59a4d19 | 1252 | |
664fcf12 AL |
1253 | /** |
1254 | * phy_mac_interrupt - MAC says the link has changed | |
1255 | * @phydev: phy_device struct with changed link | |
1256 | * @new_link: Link is Up/Down. | |
1257 | * | |
1258 | * Description: The MAC layer is able indicate there has been a change | |
1259 | * in the PHY link status. Set the new link status, and trigger the | |
1260 | * state machine, work a work queue. | |
1261 | */ | |
5ea94e76 FF |
1262 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
1263 | { | |
5ea94e76 | 1264 | phydev->link = new_link; |
deccd16f FF |
1265 | |
1266 | /* Trigger a state machine change */ | |
1267 | queue_work(system_power_efficient_wq, &phydev->phy_queue); | |
5ea94e76 FF |
1268 | } |
1269 | EXPORT_SYMBOL(phy_mac_interrupt); | |
1270 | ||
a59a4d19 GC |
1271 | /** |
1272 | * phy_init_eee - init and check the EEE feature | |
1273 | * @phydev: target phy_device struct | |
1274 | * @clk_stop_enable: PHY may stop the clock during LPI | |
1275 | * | |
1276 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
1277 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
1278 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
1279 | * bit if required. | |
1280 | */ | |
1281 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
1282 | { | |
25149ef9 FF |
1283 | if (!phydev->drv) |
1284 | return -EIO; | |
1285 | ||
a59a4d19 | 1286 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
a59a4d19 | 1287 | */ |
32d75141 | 1288 | if (phydev->duplex == DUPLEX_FULL) { |
a59a4d19 GC |
1289 | int eee_lp, eee_cap, eee_adv; |
1290 | u32 lp, cap, adv; | |
4ae6e50c | 1291 | int status; |
a59a4d19 GC |
1292 | |
1293 | /* Read phy status to properly get the right settings */ | |
1294 | status = phy_read_status(phydev); | |
1295 | if (status) | |
1296 | return status; | |
1297 | ||
1298 | /* First check if the EEE ability is supported */ | |
a6d99fcd | 1299 | eee_cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); |
7a4cecf7 GC |
1300 | if (eee_cap <= 0) |
1301 | goto eee_exit_err; | |
a59a4d19 | 1302 | |
b32607dd | 1303 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 1304 | if (!cap) |
7a4cecf7 | 1305 | goto eee_exit_err; |
a59a4d19 GC |
1306 | |
1307 | /* Check which link settings negotiated and verify it in | |
1308 | * the EEE advertising registers. | |
1309 | */ | |
a6d99fcd | 1310 | eee_lp = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE); |
7a4cecf7 GC |
1311 | if (eee_lp <= 0) |
1312 | goto eee_exit_err; | |
a59a4d19 | 1313 | |
a6d99fcd | 1314 | eee_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
7a4cecf7 GC |
1315 | if (eee_adv <= 0) |
1316 | goto eee_exit_err; | |
a59a4d19 | 1317 | |
b32607dd AB |
1318 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
1319 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
54da5a8b | 1320 | if (!phy_check_valid(phydev->speed, phydev->duplex, lp & adv)) |
7a4cecf7 | 1321 | goto eee_exit_err; |
a59a4d19 GC |
1322 | |
1323 | if (clk_stop_enable) { | |
1324 | /* Configure the PHY to stop receiving xMII | |
1325 | * clock while it is signaling LPI. | |
1326 | */ | |
a6d99fcd | 1327 | int val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1); |
a59a4d19 GC |
1328 | if (val < 0) |
1329 | return val; | |
1330 | ||
1331 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
a6d99fcd | 1332 | phy_write_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, val); |
a59a4d19 GC |
1333 | } |
1334 | ||
e62a768f | 1335 | return 0; /* EEE supported */ |
a59a4d19 | 1336 | } |
7a4cecf7 | 1337 | eee_exit_err: |
e62a768f | 1338 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1339 | } |
1340 | EXPORT_SYMBOL(phy_init_eee); | |
1341 | ||
1342 | /** | |
1343 | * phy_get_eee_err - report the EEE wake error count | |
1344 | * @phydev: target phy_device struct | |
1345 | * | |
1346 | * Description: it is to report the number of time where the PHY | |
1347 | * failed to complete its normal wake sequence. | |
1348 | */ | |
1349 | int phy_get_eee_err(struct phy_device *phydev) | |
1350 | { | |
25149ef9 FF |
1351 | if (!phydev->drv) |
1352 | return -EIO; | |
1353 | ||
a6d99fcd | 1354 | return phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR); |
a59a4d19 GC |
1355 | } |
1356 | EXPORT_SYMBOL(phy_get_eee_err); | |
1357 | ||
1358 | /** | |
1359 | * phy_ethtool_get_eee - get EEE supported and status | |
1360 | * @phydev: target phy_device struct | |
1361 | * @data: ethtool_eee data | |
1362 | * | |
1363 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1364 | * capabilities. | |
1365 | */ | |
1366 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1367 | { | |
1368 | int val; | |
1369 | ||
25149ef9 FF |
1370 | if (!phydev->drv) |
1371 | return -EIO; | |
1372 | ||
a59a4d19 | 1373 | /* Get Supported EEE */ |
a6d99fcd | 1374 | val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); |
a59a4d19 GC |
1375 | if (val < 0) |
1376 | return val; | |
b32607dd | 1377 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1378 | |
1379 | /* Get advertisement EEE */ | |
a6d99fcd | 1380 | val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
a59a4d19 GC |
1381 | if (val < 0) |
1382 | return val; | |
b32607dd | 1383 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1384 | |
1385 | /* Get LP advertisement EEE */ | |
a6d99fcd | 1386 | val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE); |
a59a4d19 GC |
1387 | if (val < 0) |
1388 | return val; | |
b32607dd | 1389 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1390 | |
1391 | return 0; | |
1392 | } | |
1393 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1394 | ||
1395 | /** | |
1396 | * phy_ethtool_set_eee - set EEE supported and status | |
1397 | * @phydev: target phy_device struct | |
1398 | * @data: ethtool_eee data | |
1399 | * | |
1400 | * Description: it is to program the Advertisement EEE register. | |
1401 | */ | |
1402 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1403 | { | |
f75abeb8 | 1404 | int cap, old_adv, adv, ret; |
a59a4d19 | 1405 | |
25149ef9 FF |
1406 | if (!phydev->drv) |
1407 | return -EIO; | |
1408 | ||
83ea067f RK |
1409 | /* Get Supported EEE */ |
1410 | cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); | |
1411 | if (cap < 0) | |
1412 | return cap; | |
d853d145 | 1413 | |
f75abeb8 RK |
1414 | old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
1415 | if (old_adv < 0) | |
1416 | return old_adv; | |
1417 | ||
83ea067f | 1418 | adv = ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap; |
a59a4d19 | 1419 | |
83ea067f RK |
1420 | /* Mask prohibited EEE modes */ |
1421 | adv &= ~phydev->eee_broken_modes; | |
1422 | ||
f75abeb8 RK |
1423 | if (old_adv != adv) { |
1424 | ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv); | |
1425 | if (ret < 0) | |
1426 | return ret; | |
1427 | ||
1428 | /* Restart autonegotiation so the new modes get sent to the | |
1429 | * link partner. | |
1430 | */ | |
002ba705 | 1431 | ret = phy_restart_aneg(phydev); |
f75abeb8 RK |
1432 | if (ret < 0) |
1433 | return ret; | |
1434 | } | |
1435 | ||
1436 | return 0; | |
a59a4d19 GC |
1437 | } |
1438 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1439 | |
1440 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1441 | { | |
25149ef9 | 1442 | if (phydev->drv && phydev->drv->set_wol) |
42e836eb MS |
1443 | return phydev->drv->set_wol(phydev, wol); |
1444 | ||
1445 | return -EOPNOTSUPP; | |
1446 | } | |
1447 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1448 | ||
1449 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1450 | { | |
25149ef9 | 1451 | if (phydev->drv && phydev->drv->get_wol) |
42e836eb MS |
1452 | phydev->drv->get_wol(phydev, wol); |
1453 | } | |
1454 | EXPORT_SYMBOL(phy_ethtool_get_wol); | |
9d9a77ce PR |
1455 | |
1456 | int phy_ethtool_get_link_ksettings(struct net_device *ndev, | |
1457 | struct ethtool_link_ksettings *cmd) | |
1458 | { | |
1459 | struct phy_device *phydev = ndev->phydev; | |
1460 | ||
1461 | if (!phydev) | |
1462 | return -ENODEV; | |
1463 | ||
5514174f | 1464 | phy_ethtool_ksettings_get(phydev, cmd); |
1465 | ||
1466 | return 0; | |
9d9a77ce PR |
1467 | } |
1468 | EXPORT_SYMBOL(phy_ethtool_get_link_ksettings); | |
1469 | ||
1470 | int phy_ethtool_set_link_ksettings(struct net_device *ndev, | |
1471 | const struct ethtool_link_ksettings *cmd) | |
1472 | { | |
1473 | struct phy_device *phydev = ndev->phydev; | |
1474 | ||
1475 | if (!phydev) | |
1476 | return -ENODEV; | |
1477 | ||
1478 | return phy_ethtool_ksettings_set(phydev, cmd); | |
1479 | } | |
1480 | EXPORT_SYMBOL(phy_ethtool_set_link_ksettings); | |
e86a8987 FF |
1481 | |
1482 | int phy_ethtool_nway_reset(struct net_device *ndev) | |
1483 | { | |
1484 | struct phy_device *phydev = ndev->phydev; | |
1485 | ||
1486 | if (!phydev) | |
1487 | return -ENODEV; | |
1488 | ||
25149ef9 FF |
1489 | if (!phydev->drv) |
1490 | return -EIO; | |
1491 | ||
002ba705 | 1492 | return phy_restart_aneg(phydev); |
e86a8987 FF |
1493 | } |
1494 | EXPORT_SYMBOL(phy_ethtool_nway_reset); |