Commit | Line | Data |
---|---|---|
00db8189 AF |
1 | /* |
2 | * drivers/net/phy/phy.c | |
3 | * | |
4 | * Framework for configuring and reading PHY devices | |
5 | * Based on code in sungem_phy.c and gianfar_phy.c | |
6 | * | |
7 | * Author: Andy Fleming | |
8 | * | |
9 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
0ac49527 | 10 | * Copyright (c) 2006, 2007 Maciej W. Rozycki |
00db8189 AF |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | */ | |
8d242488 JP |
18 | |
19 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
20 | ||
00db8189 | 21 | #include <linux/kernel.h> |
00db8189 AF |
22 | #include <linux/string.h> |
23 | #include <linux/errno.h> | |
24 | #include <linux/unistd.h> | |
00db8189 AF |
25 | #include <linux/interrupt.h> |
26 | #include <linux/init.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/netdevice.h> | |
29 | #include <linux/etherdevice.h> | |
30 | #include <linux/skbuff.h> | |
00db8189 AF |
31 | #include <linux/mm.h> |
32 | #include <linux/module.h> | |
00db8189 AF |
33 | #include <linux/mii.h> |
34 | #include <linux/ethtool.h> | |
35 | #include <linux/phy.h> | |
3c3070d7 MR |
36 | #include <linux/timer.h> |
37 | #include <linux/workqueue.h> | |
a59a4d19 | 38 | #include <linux/mdio.h> |
00db8189 | 39 | |
60063497 | 40 | #include <linux/atomic.h> |
00db8189 AF |
41 | #include <asm/io.h> |
42 | #include <asm/irq.h> | |
43 | #include <asm/uaccess.h> | |
44 | ||
b3df0da8 RD |
45 | /** |
46 | * phy_print_status - Convenience function to print out the current phy status | |
47 | * @phydev: the phy_device struct | |
e1393456 AF |
48 | */ |
49 | void phy_print_status(struct phy_device *phydev) | |
50 | { | |
e1393456 | 51 | if (phydev->link) |
8d242488 JP |
52 | pr_info("%s - Link is Up - %d/%s\n", |
53 | dev_name(&phydev->dev), | |
54 | phydev->speed, | |
55 | DUPLEX_FULL == phydev->duplex ? "Full" : "Half"); | |
56 | else | |
57 | pr_info("%s - Link is Down\n", dev_name(&phydev->dev)); | |
e1393456 AF |
58 | } |
59 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 60 | |
b3df0da8 RD |
61 | /** |
62 | * phy_clear_interrupt - Ack the phy device's interrupt | |
63 | * @phydev: the phy_device struct | |
64 | * | |
65 | * If the @phydev driver has an ack_interrupt function, call it to | |
66 | * ack and clear the phy device's interrupt. | |
67 | * | |
68 | * Returns 0 on success on < 0 on error. | |
69 | */ | |
89ff05ec | 70 | static int phy_clear_interrupt(struct phy_device *phydev) |
00db8189 AF |
71 | { |
72 | int err = 0; | |
73 | ||
74 | if (phydev->drv->ack_interrupt) | |
75 | err = phydev->drv->ack_interrupt(phydev); | |
76 | ||
77 | return err; | |
78 | } | |
79 | ||
b3df0da8 RD |
80 | /** |
81 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
82 | * @phydev: the phy_device struct | |
83 | * @interrupts: interrupt flags to configure for this @phydev | |
84 | * | |
85 | * Returns 0 on success on < 0 on error. | |
86 | */ | |
89ff05ec | 87 | static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
00db8189 AF |
88 | { |
89 | int err = 0; | |
90 | ||
91 | phydev->interrupts = interrupts; | |
92 | if (phydev->drv->config_intr) | |
93 | err = phydev->drv->config_intr(phydev); | |
94 | ||
95 | return err; | |
96 | } | |
97 | ||
98 | ||
b3df0da8 RD |
99 | /** |
100 | * phy_aneg_done - return auto-negotiation status | |
101 | * @phydev: target phy_device struct | |
00db8189 | 102 | * |
b3df0da8 | 103 | * Description: Reads the status register and returns 0 either if |
00db8189 AF |
104 | * auto-negotiation is incomplete, or if there was an error. |
105 | * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. | |
106 | */ | |
107 | static inline int phy_aneg_done(struct phy_device *phydev) | |
108 | { | |
109 | int retval; | |
110 | ||
111 | retval = phy_read(phydev, MII_BMSR); | |
112 | ||
113 | return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); | |
114 | } | |
115 | ||
00db8189 AF |
116 | /* A structure for mapping a particular speed and duplex |
117 | * combination to a particular SUPPORTED and ADVERTISED value */ | |
118 | struct phy_setting { | |
119 | int speed; | |
120 | int duplex; | |
121 | u32 setting; | |
122 | }; | |
123 | ||
124 | /* A mapping of all SUPPORTED settings to speed/duplex */ | |
f71e1309 | 125 | static const struct phy_setting settings[] = { |
00db8189 AF |
126 | { |
127 | .speed = 10000, | |
128 | .duplex = DUPLEX_FULL, | |
129 | .setting = SUPPORTED_10000baseT_Full, | |
130 | }, | |
131 | { | |
132 | .speed = SPEED_1000, | |
133 | .duplex = DUPLEX_FULL, | |
134 | .setting = SUPPORTED_1000baseT_Full, | |
135 | }, | |
136 | { | |
137 | .speed = SPEED_1000, | |
138 | .duplex = DUPLEX_HALF, | |
139 | .setting = SUPPORTED_1000baseT_Half, | |
140 | }, | |
141 | { | |
142 | .speed = SPEED_100, | |
143 | .duplex = DUPLEX_FULL, | |
144 | .setting = SUPPORTED_100baseT_Full, | |
145 | }, | |
146 | { | |
147 | .speed = SPEED_100, | |
148 | .duplex = DUPLEX_HALF, | |
149 | .setting = SUPPORTED_100baseT_Half, | |
150 | }, | |
151 | { | |
152 | .speed = SPEED_10, | |
153 | .duplex = DUPLEX_FULL, | |
154 | .setting = SUPPORTED_10baseT_Full, | |
155 | }, | |
156 | { | |
157 | .speed = SPEED_10, | |
158 | .duplex = DUPLEX_HALF, | |
159 | .setting = SUPPORTED_10baseT_Half, | |
160 | }, | |
161 | }; | |
162 | ||
ff8ac609 | 163 | #define MAX_NUM_SETTINGS ARRAY_SIZE(settings) |
00db8189 | 164 | |
b3df0da8 RD |
165 | /** |
166 | * phy_find_setting - find a PHY settings array entry that matches speed & duplex | |
167 | * @speed: speed to match | |
168 | * @duplex: duplex to match | |
00db8189 | 169 | * |
b3df0da8 | 170 | * Description: Searches the settings array for the setting which |
00db8189 AF |
171 | * matches the desired speed and duplex, and returns the index |
172 | * of that setting. Returns the index of the last setting if | |
173 | * none of the others match. | |
174 | */ | |
175 | static inline int phy_find_setting(int speed, int duplex) | |
176 | { | |
177 | int idx = 0; | |
178 | ||
179 | while (idx < ARRAY_SIZE(settings) && | |
180 | (settings[idx].speed != speed || | |
181 | settings[idx].duplex != duplex)) | |
182 | idx++; | |
183 | ||
184 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
185 | } | |
186 | ||
b3df0da8 RD |
187 | /** |
188 | * phy_find_valid - find a PHY setting that matches the requested features mask | |
189 | * @idx: The first index in settings[] to search | |
190 | * @features: A mask of the valid settings | |
00db8189 | 191 | * |
b3df0da8 | 192 | * Description: Returns the index of the first valid setting less |
00db8189 AF |
193 | * than or equal to the one pointed to by idx, as determined by |
194 | * the mask in features. Returns the index of the last setting | |
195 | * if nothing else matches. | |
196 | */ | |
197 | static inline int phy_find_valid(int idx, u32 features) | |
198 | { | |
199 | while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) | |
200 | idx++; | |
201 | ||
202 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
203 | } | |
204 | ||
b3df0da8 RD |
205 | /** |
206 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
207 | * @phydev: the target phy_device struct | |
00db8189 | 208 | * |
b3df0da8 | 209 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 210 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 211 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 212 | */ |
89ff05ec | 213 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 AF |
214 | { |
215 | u32 features = phydev->supported; | |
216 | int idx; | |
217 | ||
218 | /* Sanitize settings based on PHY capabilities */ | |
219 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 220 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 AF |
221 | |
222 | idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), | |
223 | features); | |
224 | ||
225 | phydev->speed = settings[idx].speed; | |
226 | phydev->duplex = settings[idx].duplex; | |
227 | } | |
00db8189 | 228 | |
b3df0da8 RD |
229 | /** |
230 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
231 | * @phydev: target phy_device struct | |
232 | * @cmd: ethtool_cmd | |
00db8189 AF |
233 | * |
234 | * A few notes about parameter checking: | |
235 | * - We don't set port or transceiver, so we don't care what they | |
236 | * were set to. | |
237 | * - phy_start_aneg() will make sure forced settings are sane, and | |
238 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 239 | * care if ethtool tries to give us bad values. |
00db8189 AF |
240 | */ |
241 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
242 | { | |
25db0338 DD |
243 | u32 speed = ethtool_cmd_speed(cmd); |
244 | ||
00db8189 AF |
245 | if (cmd->phy_address != phydev->addr) |
246 | return -EINVAL; | |
247 | ||
248 | /* We make sure that we don't pass unsupported | |
249 | * values in to the PHY */ | |
250 | cmd->advertising &= phydev->supported; | |
251 | ||
252 | /* Verify the settings we care about. */ | |
253 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
254 | return -EINVAL; | |
255 | ||
256 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
257 | return -EINVAL; | |
258 | ||
8e95a202 | 259 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
260 | ((speed != SPEED_1000 && |
261 | speed != SPEED_100 && | |
262 | speed != SPEED_10) || | |
8e95a202 JP |
263 | (cmd->duplex != DUPLEX_HALF && |
264 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
265 | return -EINVAL; |
266 | ||
267 | phydev->autoneg = cmd->autoneg; | |
268 | ||
25db0338 | 269 | phydev->speed = speed; |
00db8189 AF |
270 | |
271 | phydev->advertising = cmd->advertising; | |
272 | ||
273 | if (AUTONEG_ENABLE == cmd->autoneg) | |
274 | phydev->advertising |= ADVERTISED_Autoneg; | |
275 | else | |
276 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
277 | ||
278 | phydev->duplex = cmd->duplex; | |
279 | ||
280 | /* Restart the PHY */ | |
281 | phy_start_aneg(phydev); | |
282 | ||
283 | return 0; | |
284 | } | |
9f6d55d0 | 285 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 AF |
286 | |
287 | int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
288 | { | |
289 | cmd->supported = phydev->supported; | |
290 | ||
291 | cmd->advertising = phydev->advertising; | |
292 | ||
70739497 | 293 | ethtool_cmd_speed_set(cmd, phydev->speed); |
00db8189 AF |
294 | cmd->duplex = phydev->duplex; |
295 | cmd->port = PORT_MII; | |
296 | cmd->phy_address = phydev->addr; | |
4284b6a5 FF |
297 | cmd->transceiver = phy_is_internal(phydev) ? |
298 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
00db8189 AF |
299 | cmd->autoneg = phydev->autoneg; |
300 | ||
301 | return 0; | |
302 | } | |
9f6d55d0 | 303 | EXPORT_SYMBOL(phy_ethtool_gset); |
00db8189 | 304 | |
b3df0da8 RD |
305 | /** |
306 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
307 | * @phydev: the phy_device struct | |
00c7d920 | 308 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
309 | * @cmd: ioctl cmd to execute |
310 | * | |
311 | * Note that this function is currently incompatible with the | |
00db8189 | 312 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 313 | * current state. Use at own risk. |
00db8189 AF |
314 | */ |
315 | int phy_mii_ioctl(struct phy_device *phydev, | |
28b04113 | 316 | struct ifreq *ifr, int cmd) |
00db8189 | 317 | { |
28b04113 | 318 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 AF |
319 | u16 val = mii_data->val_in; |
320 | ||
321 | switch (cmd) { | |
322 | case SIOCGMIIPHY: | |
323 | mii_data->phy_id = phydev->addr; | |
c6d6a511 LB |
324 | /* fall through */ |
325 | ||
00db8189 | 326 | case SIOCGMIIREG: |
af1dc13e PK |
327 | mii_data->val_out = mdiobus_read(phydev->bus, mii_data->phy_id, |
328 | mii_data->reg_num); | |
00db8189 AF |
329 | break; |
330 | ||
331 | case SIOCSMIIREG: | |
00db8189 AF |
332 | if (mii_data->phy_id == phydev->addr) { |
333 | switch(mii_data->reg_num) { | |
334 | case MII_BMCR: | |
163642a2 | 335 | if ((val & (BMCR_RESET|BMCR_ANENABLE)) == 0) |
00db8189 AF |
336 | phydev->autoneg = AUTONEG_DISABLE; |
337 | else | |
338 | phydev->autoneg = AUTONEG_ENABLE; | |
339 | if ((!phydev->autoneg) && (val & BMCR_FULLDPLX)) | |
340 | phydev->duplex = DUPLEX_FULL; | |
341 | else | |
342 | phydev->duplex = DUPLEX_HALF; | |
024a0a3c SL |
343 | if ((!phydev->autoneg) && |
344 | (val & BMCR_SPEED1000)) | |
345 | phydev->speed = SPEED_1000; | |
346 | else if ((!phydev->autoneg) && | |
347 | (val & BMCR_SPEED100)) | |
348 | phydev->speed = SPEED_100; | |
00db8189 AF |
349 | break; |
350 | case MII_ADVERTISE: | |
351 | phydev->advertising = val; | |
352 | break; | |
353 | default: | |
354 | /* do nothing */ | |
355 | break; | |
356 | } | |
357 | } | |
358 | ||
af1dc13e PK |
359 | mdiobus_write(phydev->bus, mii_data->phy_id, |
360 | mii_data->reg_num, val); | |
361 | ||
8e95a202 JP |
362 | if (mii_data->reg_num == MII_BMCR && |
363 | val & BMCR_RESET && | |
364 | phydev->drv->config_init) { | |
f62220d3 | 365 | phy_scan_fixups(phydev); |
00db8189 | 366 | phydev->drv->config_init(phydev); |
f62220d3 | 367 | } |
00db8189 | 368 | break; |
dda93b48 | 369 | |
c1f19b51 RC |
370 | case SIOCSHWTSTAMP: |
371 | if (phydev->drv->hwtstamp) | |
372 | return phydev->drv->hwtstamp(phydev, ifr); | |
373 | /* fall through */ | |
374 | ||
dda93b48 | 375 | default: |
c6d6a511 | 376 | return -EOPNOTSUPP; |
00db8189 AF |
377 | } |
378 | ||
379 | return 0; | |
380 | } | |
680e9fe9 | 381 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 382 | |
b3df0da8 RD |
383 | /** |
384 | * phy_start_aneg - start auto-negotiation for this PHY device | |
385 | * @phydev: the phy_device struct | |
e1393456 | 386 | * |
b3df0da8 RD |
387 | * Description: Sanitizes the settings (if we're not autonegotiating |
388 | * them), and then calls the driver's config_aneg function. | |
389 | * If the PHYCONTROL Layer is operating, we change the state to | |
390 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 AF |
391 | */ |
392 | int phy_start_aneg(struct phy_device *phydev) | |
393 | { | |
394 | int err; | |
395 | ||
35b5f6b1 | 396 | mutex_lock(&phydev->lock); |
e1393456 AF |
397 | |
398 | if (AUTONEG_DISABLE == phydev->autoneg) | |
399 | phy_sanitize_settings(phydev); | |
400 | ||
401 | err = phydev->drv->config_aneg(phydev); | |
402 | ||
e1393456 AF |
403 | if (err < 0) |
404 | goto out_unlock; | |
405 | ||
406 | if (phydev->state != PHY_HALTED) { | |
407 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
408 | phydev->state = PHY_AN; | |
409 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
410 | } else { | |
411 | phydev->state = PHY_FORCING; | |
412 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
413 | } | |
414 | } | |
415 | ||
416 | out_unlock: | |
35b5f6b1 | 417 | mutex_unlock(&phydev->lock); |
e1393456 AF |
418 | return err; |
419 | } | |
420 | EXPORT_SYMBOL(phy_start_aneg); | |
421 | ||
422 | ||
b3df0da8 RD |
423 | /** |
424 | * phy_start_machine - start PHY state machine tracking | |
425 | * @phydev: the phy_device struct | |
426 | * @handler: callback function for state change notifications | |
00db8189 | 427 | * |
b3df0da8 | 428 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
429 | * which tracks whether the PHY is starting up, negotiating, |
430 | * etc. This function starts the timer which tracks the state | |
b3df0da8 RD |
431 | * of the PHY. If you want to be notified when the state changes, |
432 | * pass in the callback @handler, otherwise, pass NULL. If you | |
00db8189 | 433 | * want to maintain your own state machine, do not call this |
b3df0da8 RD |
434 | * function. |
435 | */ | |
00db8189 AF |
436 | void phy_start_machine(struct phy_device *phydev, |
437 | void (*handler)(struct net_device *)) | |
438 | { | |
439 | phydev->adjust_state = handler; | |
440 | ||
bbb47bde | 441 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
442 | } |
443 | ||
b3df0da8 RD |
444 | /** |
445 | * phy_stop_machine - stop the PHY state machine tracking | |
446 | * @phydev: target phy_device struct | |
00db8189 | 447 | * |
b3df0da8 | 448 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 449 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
450 | * phy_detach. |
451 | */ | |
452 | void phy_stop_machine(struct phy_device *phydev) | |
453 | { | |
a390d1f3 | 454 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 455 | |
35b5f6b1 | 456 | mutex_lock(&phydev->lock); |
00db8189 AF |
457 | if (phydev->state > PHY_UP) |
458 | phydev->state = PHY_UP; | |
35b5f6b1 | 459 | mutex_unlock(&phydev->lock); |
00db8189 | 460 | |
00db8189 AF |
461 | phydev->adjust_state = NULL; |
462 | } | |
463 | ||
b3df0da8 RD |
464 | /** |
465 | * phy_error - enter HALTED state for this PHY device | |
466 | * @phydev: target phy_device struct | |
00db8189 AF |
467 | * |
468 | * Moves the PHY to the HALTED state in response to a read | |
469 | * or write error, and tells the controller the link is down. | |
470 | * Must not be called from interrupt context, or while the | |
471 | * phydev->lock is held. | |
472 | */ | |
9b9a8bfc | 473 | static void phy_error(struct phy_device *phydev) |
00db8189 | 474 | { |
35b5f6b1 | 475 | mutex_lock(&phydev->lock); |
00db8189 | 476 | phydev->state = PHY_HALTED; |
35b5f6b1 | 477 | mutex_unlock(&phydev->lock); |
00db8189 AF |
478 | } |
479 | ||
b3df0da8 RD |
480 | /** |
481 | * phy_interrupt - PHY interrupt handler | |
482 | * @irq: interrupt line | |
483 | * @phy_dat: phy_device pointer | |
e1393456 | 484 | * |
b3df0da8 | 485 | * Description: When a PHY interrupt occurs, the handler disables |
e1393456 AF |
486 | * interrupts, and schedules a work task to clear the interrupt. |
487 | */ | |
7d12e780 | 488 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
489 | { |
490 | struct phy_device *phydev = phy_dat; | |
491 | ||
3c3070d7 MR |
492 | if (PHY_HALTED == phydev->state) |
493 | return IRQ_NONE; /* It can't be ours. */ | |
494 | ||
e1393456 AF |
495 | /* The MDIO bus is not allowed to be written in interrupt |
496 | * context, so we need to disable the irq here. A work | |
497 | * queue will write the PHY to disable and clear the | |
498 | * interrupt, and then reenable the irq line. */ | |
499 | disable_irq_nosync(irq); | |
0ac49527 | 500 | atomic_inc(&phydev->irq_disable); |
e1393456 | 501 | |
bbb47bde | 502 | queue_work(system_power_efficient_wq, &phydev->phy_queue); |
e1393456 AF |
503 | |
504 | return IRQ_HANDLED; | |
505 | } | |
506 | ||
b3df0da8 RD |
507 | /** |
508 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
509 | * @phydev: target phy_device struct | |
510 | */ | |
89ff05ec | 511 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 AF |
512 | { |
513 | int err; | |
514 | ||
e1393456 | 515 | err = phy_clear_interrupt(phydev); |
00db8189 | 516 | |
e1393456 AF |
517 | if (err < 0) |
518 | return err; | |
00db8189 | 519 | |
e1393456 | 520 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 AF |
521 | |
522 | return err; | |
523 | } | |
00db8189 | 524 | |
b3df0da8 RD |
525 | /** |
526 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
527 | * @phydev: target phy_device struct | |
528 | */ | |
89ff05ec | 529 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
530 | { |
531 | int err; | |
532 | ||
533 | /* Disable PHY interrupts */ | |
534 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
535 | ||
536 | if (err) | |
537 | goto phy_err; | |
538 | ||
539 | /* Clear the interrupt */ | |
540 | err = phy_clear_interrupt(phydev); | |
541 | ||
542 | if (err) | |
543 | goto phy_err; | |
544 | ||
545 | return 0; | |
546 | ||
547 | phy_err: | |
548 | phy_error(phydev); | |
549 | ||
550 | return err; | |
551 | } | |
e1393456 | 552 | |
b3df0da8 RD |
553 | /** |
554 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
555 | * @phydev: target phy_device struct | |
e1393456 | 556 | * |
b3df0da8 RD |
557 | * Description: Request the interrupt for the given PHY. |
558 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 559 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 560 | * This should only be called with a valid IRQ number. |
b3df0da8 | 561 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
562 | */ |
563 | int phy_start_interrupts(struct phy_device *phydev) | |
564 | { | |
565 | int err = 0; | |
566 | ||
0ac49527 | 567 | atomic_set(&phydev->irq_disable, 0); |
e1393456 | 568 | if (request_irq(phydev->irq, phy_interrupt, |
1fb9df5d | 569 | IRQF_SHARED, |
e1393456 AF |
570 | "phy_interrupt", |
571 | phydev) < 0) { | |
8d242488 JP |
572 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
573 | phydev->bus->name, phydev->irq); | |
e1393456 AF |
574 | phydev->irq = PHY_POLL; |
575 | return 0; | |
576 | } | |
577 | ||
578 | err = phy_enable_interrupts(phydev); | |
579 | ||
580 | return err; | |
581 | } | |
582 | EXPORT_SYMBOL(phy_start_interrupts); | |
583 | ||
b3df0da8 RD |
584 | /** |
585 | * phy_stop_interrupts - disable interrupts from a PHY device | |
586 | * @phydev: target phy_device struct | |
587 | */ | |
e1393456 AF |
588 | int phy_stop_interrupts(struct phy_device *phydev) |
589 | { | |
590 | int err; | |
591 | ||
592 | err = phy_disable_interrupts(phydev); | |
593 | ||
594 | if (err) | |
595 | phy_error(phydev); | |
596 | ||
0ac49527 MR |
597 | free_irq(phydev->irq, phydev); |
598 | ||
3c3070d7 | 599 | /* |
0ac49527 MR |
600 | * Cannot call flush_scheduled_work() here as desired because |
601 | * of rtnl_lock(), but we do not really care about what would | |
602 | * be done, except from enable_irq(), so cancel any work | |
603 | * possibly pending and take care of the matter below. | |
3c3070d7 | 604 | */ |
28e53bdd | 605 | cancel_work_sync(&phydev->phy_queue); |
0ac49527 MR |
606 | /* |
607 | * If work indeed has been cancelled, disable_irq() will have | |
608 | * been left unbalanced from phy_interrupt() and enable_irq() | |
609 | * has to be called so that other devices on the line work. | |
610 | */ | |
611 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
612 | enable_irq(phydev->irq); | |
e1393456 AF |
613 | |
614 | return err; | |
615 | } | |
616 | EXPORT_SYMBOL(phy_stop_interrupts); | |
617 | ||
618 | ||
b3df0da8 RD |
619 | /** |
620 | * phy_change - Scheduled by the phy_interrupt/timer to handle PHY changes | |
621 | * @work: work_struct that describes the work to be done | |
622 | */ | |
5ea94e76 | 623 | void phy_change(struct work_struct *work) |
e1393456 AF |
624 | { |
625 | int err; | |
c4028958 DH |
626 | struct phy_device *phydev = |
627 | container_of(work, struct phy_device, phy_queue); | |
e1393456 | 628 | |
a8729eb3 AG |
629 | if (phydev->drv->did_interrupt && |
630 | !phydev->drv->did_interrupt(phydev)) | |
631 | goto ignore; | |
632 | ||
e1393456 AF |
633 | err = phy_disable_interrupts(phydev); |
634 | ||
635 | if (err) | |
636 | goto phy_err; | |
637 | ||
35b5f6b1 | 638 | mutex_lock(&phydev->lock); |
e1393456 AF |
639 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
640 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 641 | mutex_unlock(&phydev->lock); |
e1393456 | 642 | |
0ac49527 | 643 | atomic_dec(&phydev->irq_disable); |
e1393456 AF |
644 | enable_irq(phydev->irq); |
645 | ||
646 | /* Reenable interrupts */ | |
3c3070d7 MR |
647 | if (PHY_HALTED != phydev->state) |
648 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); | |
e1393456 AF |
649 | |
650 | if (err) | |
651 | goto irq_enable_err; | |
652 | ||
a390d1f3 MS |
653 | /* reschedule state queue work to run as soon as possible */ |
654 | cancel_delayed_work_sync(&phydev->state_queue); | |
bbb47bde | 655 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); |
0acb2839 | 656 | |
e1393456 AF |
657 | return; |
658 | ||
a8729eb3 AG |
659 | ignore: |
660 | atomic_dec(&phydev->irq_disable); | |
661 | enable_irq(phydev->irq); | |
662 | return; | |
663 | ||
e1393456 AF |
664 | irq_enable_err: |
665 | disable_irq(phydev->irq); | |
0ac49527 | 666 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
667 | phy_err: |
668 | phy_error(phydev); | |
669 | } | |
670 | ||
b3df0da8 RD |
671 | /** |
672 | * phy_stop - Bring down the PHY link, and stop checking the status | |
673 | * @phydev: target phy_device struct | |
674 | */ | |
e1393456 AF |
675 | void phy_stop(struct phy_device *phydev) |
676 | { | |
35b5f6b1 | 677 | mutex_lock(&phydev->lock); |
e1393456 AF |
678 | |
679 | if (PHY_HALTED == phydev->state) | |
680 | goto out_unlock; | |
681 | ||
2c7b4921 | 682 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
683 | /* Disable PHY Interrupts */ |
684 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 685 | |
3c3070d7 MR |
686 | /* Clear any pending interrupts */ |
687 | phy_clear_interrupt(phydev); | |
688 | } | |
e1393456 | 689 | |
6daf6531 MR |
690 | phydev->state = PHY_HALTED; |
691 | ||
e1393456 | 692 | out_unlock: |
35b5f6b1 | 693 | mutex_unlock(&phydev->lock); |
3c3070d7 MR |
694 | |
695 | /* | |
696 | * Cannot call flush_scheduled_work() here as desired because | |
697 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() | |
698 | * will not reenable interrupts. | |
699 | */ | |
e1393456 AF |
700 | } |
701 | ||
702 | ||
b3df0da8 RD |
703 | /** |
704 | * phy_start - start or restart a PHY device | |
705 | * @phydev: target phy_device struct | |
e1393456 | 706 | * |
b3df0da8 | 707 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
708 | * handle PHY-related work. Used during startup to start the |
709 | * PHY, and after a call to phy_stop() to resume operation. | |
710 | * Also used to indicate the MDIO bus has cleared an error | |
711 | * condition. | |
712 | */ | |
713 | void phy_start(struct phy_device *phydev) | |
714 | { | |
35b5f6b1 | 715 | mutex_lock(&phydev->lock); |
e1393456 AF |
716 | |
717 | switch (phydev->state) { | |
718 | case PHY_STARTING: | |
719 | phydev->state = PHY_PENDING; | |
720 | break; | |
721 | case PHY_READY: | |
722 | phydev->state = PHY_UP; | |
723 | break; | |
724 | case PHY_HALTED: | |
725 | phydev->state = PHY_RESUMING; | |
726 | default: | |
727 | break; | |
728 | } | |
35b5f6b1 | 729 | mutex_unlock(&phydev->lock); |
e1393456 AF |
730 | } |
731 | EXPORT_SYMBOL(phy_stop); | |
732 | EXPORT_SYMBOL(phy_start); | |
67c4f3fa | 733 | |
35b5f6b1 NC |
734 | /** |
735 | * phy_state_machine - Handle the state machine | |
736 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 737 | */ |
4f9c85a1 | 738 | void phy_state_machine(struct work_struct *work) |
00db8189 | 739 | { |
bf6aede7 | 740 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 741 | struct phy_device *phydev = |
a390d1f3 | 742 | container_of(dwork, struct phy_device, state_queue); |
00db8189 AF |
743 | int needs_aneg = 0; |
744 | int err = 0; | |
745 | ||
35b5f6b1 | 746 | mutex_lock(&phydev->lock); |
00db8189 AF |
747 | |
748 | if (phydev->adjust_state) | |
749 | phydev->adjust_state(phydev->attached_dev); | |
750 | ||
751 | switch(phydev->state) { | |
752 | case PHY_DOWN: | |
753 | case PHY_STARTING: | |
754 | case PHY_READY: | |
755 | case PHY_PENDING: | |
756 | break; | |
757 | case PHY_UP: | |
758 | needs_aneg = 1; | |
759 | ||
760 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
761 | ||
762 | break; | |
763 | case PHY_AN: | |
6b655529 AF |
764 | err = phy_read_status(phydev); |
765 | ||
766 | if (err < 0) | |
767 | break; | |
768 | ||
769 | /* If the link is down, give up on | |
770 | * negotiation for now */ | |
771 | if (!phydev->link) { | |
772 | phydev->state = PHY_NOLINK; | |
773 | netif_carrier_off(phydev->attached_dev); | |
774 | phydev->adjust_link(phydev->attached_dev); | |
775 | break; | |
776 | } | |
777 | ||
00db8189 AF |
778 | /* Check if negotiation is done. Break |
779 | * if there's an error */ | |
780 | err = phy_aneg_done(phydev); | |
781 | if (err < 0) | |
782 | break; | |
783 | ||
6b655529 | 784 | /* If AN is done, we're running */ |
00db8189 | 785 | if (err > 0) { |
6b655529 AF |
786 | phydev->state = PHY_RUNNING; |
787 | netif_carrier_on(phydev->attached_dev); | |
788 | phydev->adjust_link(phydev->attached_dev); | |
00db8189 | 789 | |
6b655529 | 790 | } else if (0 == phydev->link_timeout--) { |
6b655529 AF |
791 | needs_aneg = 1; |
792 | /* If we have the magic_aneg bit, | |
793 | * we try again */ | |
794 | if (phydev->drv->flags & PHY_HAS_MAGICANEG) | |
00db8189 | 795 | break; |
00db8189 AF |
796 | } |
797 | break; | |
798 | case PHY_NOLINK: | |
799 | err = phy_read_status(phydev); | |
800 | ||
801 | if (err) | |
802 | break; | |
803 | ||
804 | if (phydev->link) { | |
805 | phydev->state = PHY_RUNNING; | |
806 | netif_carrier_on(phydev->attached_dev); | |
807 | phydev->adjust_link(phydev->attached_dev); | |
808 | } | |
809 | break; | |
810 | case PHY_FORCING: | |
6b655529 | 811 | err = genphy_update_link(phydev); |
00db8189 AF |
812 | |
813 | if (err) | |
814 | break; | |
815 | ||
816 | if (phydev->link) { | |
817 | phydev->state = PHY_RUNNING; | |
818 | netif_carrier_on(phydev->attached_dev); | |
819 | } else { | |
a33e6112 | 820 | if (0 == phydev->link_timeout--) |
00db8189 | 821 | needs_aneg = 1; |
00db8189 AF |
822 | } |
823 | ||
824 | phydev->adjust_link(phydev->attached_dev); | |
825 | break; | |
826 | case PHY_RUNNING: | |
827 | /* Only register a CHANGE if we are | |
2c7b4921 FF |
828 | * polling or ignoring interrupts |
829 | */ | |
830 | if (!phy_interrupt_is_valid(phydev)) | |
00db8189 AF |
831 | phydev->state = PHY_CHANGELINK; |
832 | break; | |
833 | case PHY_CHANGELINK: | |
834 | err = phy_read_status(phydev); | |
835 | ||
836 | if (err) | |
837 | break; | |
838 | ||
839 | if (phydev->link) { | |
840 | phydev->state = PHY_RUNNING; | |
841 | netif_carrier_on(phydev->attached_dev); | |
842 | } else { | |
843 | phydev->state = PHY_NOLINK; | |
844 | netif_carrier_off(phydev->attached_dev); | |
845 | } | |
846 | ||
847 | phydev->adjust_link(phydev->attached_dev); | |
848 | ||
2c7b4921 | 849 | if (phy_interrupt_is_valid(phydev)) |
00db8189 AF |
850 | err = phy_config_interrupt(phydev, |
851 | PHY_INTERRUPT_ENABLED); | |
852 | break; | |
853 | case PHY_HALTED: | |
854 | if (phydev->link) { | |
855 | phydev->link = 0; | |
856 | netif_carrier_off(phydev->attached_dev); | |
857 | phydev->adjust_link(phydev->attached_dev); | |
858 | } | |
859 | break; | |
860 | case PHY_RESUMING: | |
861 | ||
862 | err = phy_clear_interrupt(phydev); | |
863 | ||
864 | if (err) | |
865 | break; | |
866 | ||
867 | err = phy_config_interrupt(phydev, | |
868 | PHY_INTERRUPT_ENABLED); | |
869 | ||
870 | if (err) | |
871 | break; | |
872 | ||
873 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
874 | err = phy_aneg_done(phydev); | |
875 | if (err < 0) | |
876 | break; | |
877 | ||
878 | /* err > 0 if AN is done. | |
879 | * Otherwise, it's 0, and we're | |
880 | * still waiting for AN */ | |
881 | if (err > 0) { | |
42caa074 WF |
882 | err = phy_read_status(phydev); |
883 | if (err) | |
884 | break; | |
885 | ||
886 | if (phydev->link) { | |
887 | phydev->state = PHY_RUNNING; | |
888 | netif_carrier_on(phydev->attached_dev); | |
889 | } else | |
890 | phydev->state = PHY_NOLINK; | |
891 | phydev->adjust_link(phydev->attached_dev); | |
00db8189 AF |
892 | } else { |
893 | phydev->state = PHY_AN; | |
894 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
895 | } | |
42caa074 WF |
896 | } else { |
897 | err = phy_read_status(phydev); | |
898 | if (err) | |
899 | break; | |
900 | ||
901 | if (phydev->link) { | |
902 | phydev->state = PHY_RUNNING; | |
903 | netif_carrier_on(phydev->attached_dev); | |
904 | } else | |
905 | phydev->state = PHY_NOLINK; | |
906 | phydev->adjust_link(phydev->attached_dev); | |
907 | } | |
00db8189 AF |
908 | break; |
909 | } | |
910 | ||
35b5f6b1 | 911 | mutex_unlock(&phydev->lock); |
00db8189 AF |
912 | |
913 | if (needs_aneg) | |
914 | err = phy_start_aneg(phydev); | |
915 | ||
916 | if (err < 0) | |
917 | phy_error(phydev); | |
918 | ||
bbb47bde VK |
919 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, |
920 | PHY_STATE_TIME * HZ); | |
35b5f6b1 | 921 | } |
a59a4d19 | 922 | |
5ea94e76 FF |
923 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
924 | { | |
925 | cancel_work_sync(&phydev->phy_queue); | |
926 | phydev->link = new_link; | |
927 | schedule_work(&phydev->phy_queue); | |
928 | } | |
929 | EXPORT_SYMBOL(phy_mac_interrupt); | |
930 | ||
a59a4d19 GC |
931 | static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad, |
932 | int addr) | |
933 | { | |
934 | /* Write the desired MMD Devad */ | |
935 | bus->write(bus, addr, MII_MMD_CTRL, devad); | |
936 | ||
937 | /* Write the desired MMD register address */ | |
938 | bus->write(bus, addr, MII_MMD_DATA, prtad); | |
939 | ||
940 | /* Select the Function : DATA with no post increment */ | |
941 | bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
942 | } | |
943 | ||
944 | /** | |
945 | * phy_read_mmd_indirect - reads data from the MMD registers | |
946 | * @bus: the target MII bus | |
947 | * @prtad: MMD Address | |
948 | * @devad: MMD DEVAD | |
949 | * @addr: PHY address on the MII bus | |
950 | * | |
951 | * Description: it reads data from the MMD registers (clause 22 to access to | |
952 | * clause 45) of the specified phy address. | |
953 | * To read these register we have: | |
954 | * 1) Write reg 13 // DEVAD | |
955 | * 2) Write reg 14 // MMD Address | |
956 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
957 | * 3) Read reg 14 // Read MMD data | |
958 | */ | |
959 | static int phy_read_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
960 | int addr) | |
961 | { | |
962 | u32 ret; | |
963 | ||
964 | mmd_phy_indirect(bus, prtad, devad, addr); | |
965 | ||
966 | /* Read the content of the MMD's selected register */ | |
967 | ret = bus->read(bus, addr, MII_MMD_DATA); | |
968 | ||
969 | return ret; | |
970 | } | |
971 | ||
972 | /** | |
973 | * phy_write_mmd_indirect - writes data to the MMD registers | |
974 | * @bus: the target MII bus | |
975 | * @prtad: MMD Address | |
976 | * @devad: MMD DEVAD | |
977 | * @addr: PHY address on the MII bus | |
978 | * @data: data to write in the MMD register | |
979 | * | |
980 | * Description: Write data from the MMD registers of the specified | |
981 | * phy address. | |
982 | * To write these register we have: | |
983 | * 1) Write reg 13 // DEVAD | |
984 | * 2) Write reg 14 // MMD Address | |
985 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
986 | * 3) Write reg 14 // Write MMD data | |
987 | */ | |
988 | static void phy_write_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
989 | int addr, u32 data) | |
990 | { | |
991 | mmd_phy_indirect(bus, prtad, devad, addr); | |
992 | ||
993 | /* Write the data into MMD's selected register */ | |
994 | bus->write(bus, addr, MII_MMD_DATA, data); | |
995 | } | |
996 | ||
a59a4d19 GC |
997 | /** |
998 | * phy_init_eee - init and check the EEE feature | |
999 | * @phydev: target phy_device struct | |
1000 | * @clk_stop_enable: PHY may stop the clock during LPI | |
1001 | * | |
1002 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
1003 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
1004 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
1005 | * bit if required. | |
1006 | */ | |
1007 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
1008 | { | |
1009 | int ret = -EPROTONOSUPPORT; | |
1010 | ||
1011 | /* According to 802.3az,the EEE is supported only in full duplex-mode. | |
1012 | * Also EEE feature is active when core is operating with MII, GMII | |
1013 | * or RGMII. | |
1014 | */ | |
1015 | if ((phydev->duplex == DUPLEX_FULL) && | |
1016 | ((phydev->interface == PHY_INTERFACE_MODE_MII) || | |
1017 | (phydev->interface == PHY_INTERFACE_MODE_GMII) || | |
1018 | (phydev->interface == PHY_INTERFACE_MODE_RGMII))) { | |
1019 | int eee_lp, eee_cap, eee_adv; | |
1020 | u32 lp, cap, adv; | |
1021 | int idx, status; | |
1022 | ||
1023 | /* Read phy status to properly get the right settings */ | |
1024 | status = phy_read_status(phydev); | |
1025 | if (status) | |
1026 | return status; | |
1027 | ||
1028 | /* First check if the EEE ability is supported */ | |
1029 | eee_cap = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
1030 | MDIO_MMD_PCS, phydev->addr); | |
1031 | if (eee_cap < 0) | |
1032 | return eee_cap; | |
1033 | ||
b32607dd | 1034 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 GC |
1035 | if (!cap) |
1036 | goto eee_exit; | |
1037 | ||
1038 | /* Check which link settings negotiated and verify it in | |
1039 | * the EEE advertising registers. | |
1040 | */ | |
1041 | eee_lp = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
1042 | MDIO_MMD_AN, phydev->addr); | |
1043 | if (eee_lp < 0) | |
1044 | return eee_lp; | |
1045 | ||
1046 | eee_adv = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1047 | MDIO_MMD_AN, phydev->addr); | |
1048 | if (eee_adv < 0) | |
1049 | return eee_adv; | |
1050 | ||
b32607dd AB |
1051 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
1052 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
a59a4d19 | 1053 | idx = phy_find_setting(phydev->speed, phydev->duplex); |
9a9c56cb | 1054 | if (!(lp & adv & settings[idx].setting)) |
a59a4d19 GC |
1055 | goto eee_exit; |
1056 | ||
1057 | if (clk_stop_enable) { | |
1058 | /* Configure the PHY to stop receiving xMII | |
1059 | * clock while it is signaling LPI. | |
1060 | */ | |
1061 | int val = phy_read_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1062 | MDIO_MMD_PCS, | |
1063 | phydev->addr); | |
1064 | if (val < 0) | |
1065 | return val; | |
1066 | ||
1067 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
1068 | phy_write_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1069 | MDIO_MMD_PCS, phydev->addr, val); | |
1070 | } | |
1071 | ||
1072 | ret = 0; /* EEE supported */ | |
1073 | } | |
1074 | ||
1075 | eee_exit: | |
1076 | return ret; | |
1077 | } | |
1078 | EXPORT_SYMBOL(phy_init_eee); | |
1079 | ||
1080 | /** | |
1081 | * phy_get_eee_err - report the EEE wake error count | |
1082 | * @phydev: target phy_device struct | |
1083 | * | |
1084 | * Description: it is to report the number of time where the PHY | |
1085 | * failed to complete its normal wake sequence. | |
1086 | */ | |
1087 | int phy_get_eee_err(struct phy_device *phydev) | |
1088 | { | |
1089 | return phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_WK_ERR, | |
1090 | MDIO_MMD_PCS, phydev->addr); | |
1091 | ||
1092 | } | |
1093 | EXPORT_SYMBOL(phy_get_eee_err); | |
1094 | ||
1095 | /** | |
1096 | * phy_ethtool_get_eee - get EEE supported and status | |
1097 | * @phydev: target phy_device struct | |
1098 | * @data: ethtool_eee data | |
1099 | * | |
1100 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1101 | * capabilities. | |
1102 | */ | |
1103 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1104 | { | |
1105 | int val; | |
1106 | ||
1107 | /* Get Supported EEE */ | |
1108 | val = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
1109 | MDIO_MMD_PCS, phydev->addr); | |
1110 | if (val < 0) | |
1111 | return val; | |
b32607dd | 1112 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1113 | |
1114 | /* Get advertisement EEE */ | |
1115 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1116 | MDIO_MMD_AN, phydev->addr); | |
1117 | if (val < 0) | |
1118 | return val; | |
b32607dd | 1119 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1120 | |
1121 | /* Get LP advertisement EEE */ | |
1122 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
1123 | MDIO_MMD_AN, phydev->addr); | |
1124 | if (val < 0) | |
1125 | return val; | |
b32607dd | 1126 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1127 | |
1128 | return 0; | |
1129 | } | |
1130 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1131 | ||
1132 | /** | |
1133 | * phy_ethtool_set_eee - set EEE supported and status | |
1134 | * @phydev: target phy_device struct | |
1135 | * @data: ethtool_eee data | |
1136 | * | |
1137 | * Description: it is to program the Advertisement EEE register. | |
1138 | */ | |
1139 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1140 | { | |
1141 | int val; | |
1142 | ||
b32607dd | 1143 | val = ethtool_adv_to_mmd_eee_adv_t(data->advertised); |
a59a4d19 GC |
1144 | phy_write_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, MDIO_MMD_AN, |
1145 | phydev->addr, val); | |
1146 | ||
1147 | return 0; | |
1148 | } | |
1149 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1150 | |
1151 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1152 | { | |
1153 | if (phydev->drv->set_wol) | |
1154 | return phydev->drv->set_wol(phydev, wol); | |
1155 | ||
1156 | return -EOPNOTSUPP; | |
1157 | } | |
1158 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1159 | ||
1160 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1161 | { | |
1162 | if (phydev->drv->get_wol) | |
1163 | phydev->drv->get_wol(phydev, wol); | |
1164 | } | |
1165 | EXPORT_SYMBOL(phy_ethtool_get_wol); |