Commit | Line | Data |
---|---|---|
2f53e904 | 1 | /* Framework for configuring and reading PHY devices |
00db8189 AF |
2 | * Based on code in sungem_phy.c and gianfar_phy.c |
3 | * | |
4 | * Author: Andy Fleming | |
5 | * | |
6 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
0ac49527 | 7 | * Copyright (c) 2006, 2007 Maciej W. Rozycki |
00db8189 AF |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | * | |
14 | */ | |
8d242488 JP |
15 | |
16 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
17 | ||
00db8189 | 18 | #include <linux/kernel.h> |
00db8189 AF |
19 | #include <linux/string.h> |
20 | #include <linux/errno.h> | |
21 | #include <linux/unistd.h> | |
00db8189 | 22 | #include <linux/interrupt.h> |
00db8189 AF |
23 | #include <linux/delay.h> |
24 | #include <linux/netdevice.h> | |
25 | #include <linux/etherdevice.h> | |
26 | #include <linux/skbuff.h> | |
00db8189 AF |
27 | #include <linux/mm.h> |
28 | #include <linux/module.h> | |
00db8189 AF |
29 | #include <linux/mii.h> |
30 | #include <linux/ethtool.h> | |
31 | #include <linux/phy.h> | |
3c3070d7 MR |
32 | #include <linux/timer.h> |
33 | #include <linux/workqueue.h> | |
a59a4d19 | 34 | #include <linux/mdio.h> |
2f53e904 SS |
35 | #include <linux/io.h> |
36 | #include <linux/uaccess.h> | |
60063497 | 37 | #include <linux/atomic.h> |
2f53e904 | 38 | |
00db8189 | 39 | #include <asm/irq.h> |
00db8189 | 40 | |
b3df0da8 RD |
41 | /** |
42 | * phy_print_status - Convenience function to print out the current phy status | |
43 | * @phydev: the phy_device struct | |
e1393456 AF |
44 | */ |
45 | void phy_print_status(struct phy_device *phydev) | |
46 | { | |
2f53e904 | 47 | if (phydev->link) { |
8d242488 JP |
48 | pr_info("%s - Link is Up - %d/%s\n", |
49 | dev_name(&phydev->dev), | |
50 | phydev->speed, | |
51 | DUPLEX_FULL == phydev->duplex ? "Full" : "Half"); | |
2f53e904 | 52 | } else { |
8d242488 | 53 | pr_info("%s - Link is Down\n", dev_name(&phydev->dev)); |
2f53e904 | 54 | } |
e1393456 AF |
55 | } |
56 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 57 | |
b3df0da8 RD |
58 | /** |
59 | * phy_clear_interrupt - Ack the phy device's interrupt | |
60 | * @phydev: the phy_device struct | |
61 | * | |
62 | * If the @phydev driver has an ack_interrupt function, call it to | |
63 | * ack and clear the phy device's interrupt. | |
64 | * | |
65 | * Returns 0 on success on < 0 on error. | |
66 | */ | |
89ff05ec | 67 | static int phy_clear_interrupt(struct phy_device *phydev) |
00db8189 | 68 | { |
00db8189 | 69 | if (phydev->drv->ack_interrupt) |
e62a768f | 70 | return phydev->drv->ack_interrupt(phydev); |
00db8189 | 71 | |
e62a768f | 72 | return 0; |
00db8189 AF |
73 | } |
74 | ||
b3df0da8 RD |
75 | /** |
76 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
77 | * @phydev: the phy_device struct | |
78 | * @interrupts: interrupt flags to configure for this @phydev | |
79 | * | |
80 | * Returns 0 on success on < 0 on error. | |
81 | */ | |
89ff05ec | 82 | static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
00db8189 | 83 | { |
00db8189 AF |
84 | phydev->interrupts = interrupts; |
85 | if (phydev->drv->config_intr) | |
e62a768f | 86 | return phydev->drv->config_intr(phydev); |
00db8189 | 87 | |
e62a768f | 88 | return 0; |
00db8189 AF |
89 | } |
90 | ||
91 | ||
b3df0da8 RD |
92 | /** |
93 | * phy_aneg_done - return auto-negotiation status | |
94 | * @phydev: target phy_device struct | |
00db8189 | 95 | * |
b3df0da8 | 96 | * Description: Reads the status register and returns 0 either if |
00db8189 AF |
97 | * auto-negotiation is incomplete, or if there was an error. |
98 | * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. | |
99 | */ | |
100 | static inline int phy_aneg_done(struct phy_device *phydev) | |
101 | { | |
553fe92b | 102 | int retval = phy_read(phydev, MII_BMSR); |
00db8189 AF |
103 | |
104 | return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); | |
105 | } | |
106 | ||
00db8189 | 107 | /* A structure for mapping a particular speed and duplex |
2f53e904 SS |
108 | * combination to a particular SUPPORTED and ADVERTISED value |
109 | */ | |
00db8189 AF |
110 | struct phy_setting { |
111 | int speed; | |
112 | int duplex; | |
113 | u32 setting; | |
114 | }; | |
115 | ||
116 | /* A mapping of all SUPPORTED settings to speed/duplex */ | |
f71e1309 | 117 | static const struct phy_setting settings[] = { |
00db8189 AF |
118 | { |
119 | .speed = 10000, | |
120 | .duplex = DUPLEX_FULL, | |
121 | .setting = SUPPORTED_10000baseT_Full, | |
122 | }, | |
123 | { | |
124 | .speed = SPEED_1000, | |
125 | .duplex = DUPLEX_FULL, | |
126 | .setting = SUPPORTED_1000baseT_Full, | |
127 | }, | |
128 | { | |
129 | .speed = SPEED_1000, | |
130 | .duplex = DUPLEX_HALF, | |
131 | .setting = SUPPORTED_1000baseT_Half, | |
132 | }, | |
133 | { | |
134 | .speed = SPEED_100, | |
135 | .duplex = DUPLEX_FULL, | |
136 | .setting = SUPPORTED_100baseT_Full, | |
137 | }, | |
138 | { | |
139 | .speed = SPEED_100, | |
140 | .duplex = DUPLEX_HALF, | |
141 | .setting = SUPPORTED_100baseT_Half, | |
142 | }, | |
143 | { | |
144 | .speed = SPEED_10, | |
145 | .duplex = DUPLEX_FULL, | |
146 | .setting = SUPPORTED_10baseT_Full, | |
147 | }, | |
148 | { | |
149 | .speed = SPEED_10, | |
150 | .duplex = DUPLEX_HALF, | |
151 | .setting = SUPPORTED_10baseT_Half, | |
152 | }, | |
153 | }; | |
154 | ||
ff8ac609 | 155 | #define MAX_NUM_SETTINGS ARRAY_SIZE(settings) |
00db8189 | 156 | |
b3df0da8 RD |
157 | /** |
158 | * phy_find_setting - find a PHY settings array entry that matches speed & duplex | |
159 | * @speed: speed to match | |
160 | * @duplex: duplex to match | |
00db8189 | 161 | * |
b3df0da8 | 162 | * Description: Searches the settings array for the setting which |
00db8189 AF |
163 | * matches the desired speed and duplex, and returns the index |
164 | * of that setting. Returns the index of the last setting if | |
165 | * none of the others match. | |
166 | */ | |
167 | static inline int phy_find_setting(int speed, int duplex) | |
168 | { | |
169 | int idx = 0; | |
170 | ||
171 | while (idx < ARRAY_SIZE(settings) && | |
2f53e904 | 172 | (settings[idx].speed != speed || settings[idx].duplex != duplex)) |
00db8189 AF |
173 | idx++; |
174 | ||
175 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
176 | } | |
177 | ||
b3df0da8 RD |
178 | /** |
179 | * phy_find_valid - find a PHY setting that matches the requested features mask | |
180 | * @idx: The first index in settings[] to search | |
181 | * @features: A mask of the valid settings | |
00db8189 | 182 | * |
b3df0da8 | 183 | * Description: Returns the index of the first valid setting less |
00db8189 AF |
184 | * than or equal to the one pointed to by idx, as determined by |
185 | * the mask in features. Returns the index of the last setting | |
186 | * if nothing else matches. | |
187 | */ | |
188 | static inline int phy_find_valid(int idx, u32 features) | |
189 | { | |
190 | while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) | |
191 | idx++; | |
192 | ||
193 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
194 | } | |
195 | ||
b3df0da8 RD |
196 | /** |
197 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
198 | * @phydev: the target phy_device struct | |
00db8189 | 199 | * |
b3df0da8 | 200 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 201 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 202 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 203 | */ |
89ff05ec | 204 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 AF |
205 | { |
206 | u32 features = phydev->supported; | |
207 | int idx; | |
208 | ||
209 | /* Sanitize settings based on PHY capabilities */ | |
210 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 211 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 AF |
212 | |
213 | idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), | |
214 | features); | |
215 | ||
216 | phydev->speed = settings[idx].speed; | |
217 | phydev->duplex = settings[idx].duplex; | |
218 | } | |
00db8189 | 219 | |
b3df0da8 RD |
220 | /** |
221 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
222 | * @phydev: target phy_device struct | |
223 | * @cmd: ethtool_cmd | |
00db8189 AF |
224 | * |
225 | * A few notes about parameter checking: | |
226 | * - We don't set port or transceiver, so we don't care what they | |
227 | * were set to. | |
228 | * - phy_start_aneg() will make sure forced settings are sane, and | |
229 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 230 | * care if ethtool tries to give us bad values. |
00db8189 AF |
231 | */ |
232 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
233 | { | |
25db0338 DD |
234 | u32 speed = ethtool_cmd_speed(cmd); |
235 | ||
00db8189 AF |
236 | if (cmd->phy_address != phydev->addr) |
237 | return -EINVAL; | |
238 | ||
2f53e904 | 239 | /* We make sure that we don't pass unsupported values in to the PHY */ |
00db8189 AF |
240 | cmd->advertising &= phydev->supported; |
241 | ||
242 | /* Verify the settings we care about. */ | |
243 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
244 | return -EINVAL; | |
245 | ||
246 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
247 | return -EINVAL; | |
248 | ||
8e95a202 | 249 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
250 | ((speed != SPEED_1000 && |
251 | speed != SPEED_100 && | |
252 | speed != SPEED_10) || | |
8e95a202 JP |
253 | (cmd->duplex != DUPLEX_HALF && |
254 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
255 | return -EINVAL; |
256 | ||
257 | phydev->autoneg = cmd->autoneg; | |
258 | ||
25db0338 | 259 | phydev->speed = speed; |
00db8189 AF |
260 | |
261 | phydev->advertising = cmd->advertising; | |
262 | ||
263 | if (AUTONEG_ENABLE == cmd->autoneg) | |
264 | phydev->advertising |= ADVERTISED_Autoneg; | |
265 | else | |
266 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
267 | ||
268 | phydev->duplex = cmd->duplex; | |
269 | ||
270 | /* Restart the PHY */ | |
271 | phy_start_aneg(phydev); | |
272 | ||
273 | return 0; | |
274 | } | |
9f6d55d0 | 275 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 AF |
276 | |
277 | int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
278 | { | |
279 | cmd->supported = phydev->supported; | |
280 | ||
281 | cmd->advertising = phydev->advertising; | |
114002bc | 282 | cmd->lp_advertising = phydev->lp_advertising; |
00db8189 | 283 | |
70739497 | 284 | ethtool_cmd_speed_set(cmd, phydev->speed); |
00db8189 AF |
285 | cmd->duplex = phydev->duplex; |
286 | cmd->port = PORT_MII; | |
287 | cmd->phy_address = phydev->addr; | |
4284b6a5 FF |
288 | cmd->transceiver = phy_is_internal(phydev) ? |
289 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
00db8189 AF |
290 | cmd->autoneg = phydev->autoneg; |
291 | ||
292 | return 0; | |
293 | } | |
9f6d55d0 | 294 | EXPORT_SYMBOL(phy_ethtool_gset); |
00db8189 | 295 | |
b3df0da8 RD |
296 | /** |
297 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
298 | * @phydev: the phy_device struct | |
00c7d920 | 299 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
300 | * @cmd: ioctl cmd to execute |
301 | * | |
302 | * Note that this function is currently incompatible with the | |
00db8189 | 303 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 304 | * current state. Use at own risk. |
00db8189 | 305 | */ |
2f53e904 | 306 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 307 | { |
28b04113 | 308 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 AF |
309 | u16 val = mii_data->val_in; |
310 | ||
311 | switch (cmd) { | |
312 | case SIOCGMIIPHY: | |
313 | mii_data->phy_id = phydev->addr; | |
c6d6a511 LB |
314 | /* fall through */ |
315 | ||
00db8189 | 316 | case SIOCGMIIREG: |
af1dc13e PK |
317 | mii_data->val_out = mdiobus_read(phydev->bus, mii_data->phy_id, |
318 | mii_data->reg_num); | |
e62a768f | 319 | return 0; |
00db8189 AF |
320 | |
321 | case SIOCSMIIREG: | |
00db8189 | 322 | if (mii_data->phy_id == phydev->addr) { |
e109374f | 323 | switch (mii_data->reg_num) { |
00db8189 | 324 | case MII_BMCR: |
2f53e904 | 325 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) |
00db8189 AF |
326 | phydev->autoneg = AUTONEG_DISABLE; |
327 | else | |
328 | phydev->autoneg = AUTONEG_ENABLE; | |
2f53e904 | 329 | if (!phydev->autoneg && (val & BMCR_FULLDPLX)) |
00db8189 AF |
330 | phydev->duplex = DUPLEX_FULL; |
331 | else | |
332 | phydev->duplex = DUPLEX_HALF; | |
2f53e904 | 333 | if (!phydev->autoneg && (val & BMCR_SPEED1000)) |
024a0a3c | 334 | phydev->speed = SPEED_1000; |
2f53e904 SS |
335 | else if (!phydev->autoneg && |
336 | (val & BMCR_SPEED100)) | |
024a0a3c | 337 | phydev->speed = SPEED_100; |
00db8189 AF |
338 | break; |
339 | case MII_ADVERTISE: | |
340 | phydev->advertising = val; | |
341 | break; | |
342 | default: | |
343 | /* do nothing */ | |
344 | break; | |
345 | } | |
346 | } | |
347 | ||
af1dc13e PK |
348 | mdiobus_write(phydev->bus, mii_data->phy_id, |
349 | mii_data->reg_num, val); | |
350 | ||
8e95a202 | 351 | if (mii_data->reg_num == MII_BMCR && |
2613f95f | 352 | val & BMCR_RESET) |
e62a768f SS |
353 | return phy_init_hw(phydev); |
354 | return 0; | |
dda93b48 | 355 | |
c1f19b51 RC |
356 | case SIOCSHWTSTAMP: |
357 | if (phydev->drv->hwtstamp) | |
358 | return phydev->drv->hwtstamp(phydev, ifr); | |
359 | /* fall through */ | |
360 | ||
dda93b48 | 361 | default: |
c6d6a511 | 362 | return -EOPNOTSUPP; |
00db8189 | 363 | } |
00db8189 | 364 | } |
680e9fe9 | 365 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 366 | |
b3df0da8 RD |
367 | /** |
368 | * phy_start_aneg - start auto-negotiation for this PHY device | |
369 | * @phydev: the phy_device struct | |
e1393456 | 370 | * |
b3df0da8 RD |
371 | * Description: Sanitizes the settings (if we're not autonegotiating |
372 | * them), and then calls the driver's config_aneg function. | |
373 | * If the PHYCONTROL Layer is operating, we change the state to | |
374 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 AF |
375 | */ |
376 | int phy_start_aneg(struct phy_device *phydev) | |
377 | { | |
378 | int err; | |
379 | ||
35b5f6b1 | 380 | mutex_lock(&phydev->lock); |
e1393456 AF |
381 | |
382 | if (AUTONEG_DISABLE == phydev->autoneg) | |
383 | phy_sanitize_settings(phydev); | |
384 | ||
385 | err = phydev->drv->config_aneg(phydev); | |
e1393456 AF |
386 | if (err < 0) |
387 | goto out_unlock; | |
388 | ||
389 | if (phydev->state != PHY_HALTED) { | |
390 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
391 | phydev->state = PHY_AN; | |
392 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
393 | } else { | |
394 | phydev->state = PHY_FORCING; | |
395 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
396 | } | |
397 | } | |
398 | ||
399 | out_unlock: | |
35b5f6b1 | 400 | mutex_unlock(&phydev->lock); |
e1393456 AF |
401 | return err; |
402 | } | |
403 | EXPORT_SYMBOL(phy_start_aneg); | |
404 | ||
b3df0da8 RD |
405 | /** |
406 | * phy_start_machine - start PHY state machine tracking | |
407 | * @phydev: the phy_device struct | |
00db8189 | 408 | * |
b3df0da8 | 409 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
410 | * which tracks whether the PHY is starting up, negotiating, |
411 | * etc. This function starts the timer which tracks the state | |
29935aeb SS |
412 | * of the PHY. If you want to maintain your own state machine, |
413 | * do not call this function. | |
b3df0da8 | 414 | */ |
29935aeb | 415 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 416 | { |
bbb47bde | 417 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
418 | } |
419 | ||
b3df0da8 RD |
420 | /** |
421 | * phy_stop_machine - stop the PHY state machine tracking | |
422 | * @phydev: target phy_device struct | |
00db8189 | 423 | * |
b3df0da8 | 424 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 425 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
426 | * phy_detach. |
427 | */ | |
428 | void phy_stop_machine(struct phy_device *phydev) | |
429 | { | |
a390d1f3 | 430 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 431 | |
35b5f6b1 | 432 | mutex_lock(&phydev->lock); |
00db8189 AF |
433 | if (phydev->state > PHY_UP) |
434 | phydev->state = PHY_UP; | |
35b5f6b1 | 435 | mutex_unlock(&phydev->lock); |
00db8189 AF |
436 | } |
437 | ||
b3df0da8 RD |
438 | /** |
439 | * phy_error - enter HALTED state for this PHY device | |
440 | * @phydev: target phy_device struct | |
00db8189 AF |
441 | * |
442 | * Moves the PHY to the HALTED state in response to a read | |
443 | * or write error, and tells the controller the link is down. | |
444 | * Must not be called from interrupt context, or while the | |
445 | * phydev->lock is held. | |
446 | */ | |
9b9a8bfc | 447 | static void phy_error(struct phy_device *phydev) |
00db8189 | 448 | { |
35b5f6b1 | 449 | mutex_lock(&phydev->lock); |
00db8189 | 450 | phydev->state = PHY_HALTED; |
35b5f6b1 | 451 | mutex_unlock(&phydev->lock); |
00db8189 AF |
452 | } |
453 | ||
b3df0da8 RD |
454 | /** |
455 | * phy_interrupt - PHY interrupt handler | |
456 | * @irq: interrupt line | |
457 | * @phy_dat: phy_device pointer | |
e1393456 | 458 | * |
b3df0da8 | 459 | * Description: When a PHY interrupt occurs, the handler disables |
e1393456 AF |
460 | * interrupts, and schedules a work task to clear the interrupt. |
461 | */ | |
7d12e780 | 462 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
463 | { |
464 | struct phy_device *phydev = phy_dat; | |
465 | ||
3c3070d7 MR |
466 | if (PHY_HALTED == phydev->state) |
467 | return IRQ_NONE; /* It can't be ours. */ | |
468 | ||
e1393456 AF |
469 | /* The MDIO bus is not allowed to be written in interrupt |
470 | * context, so we need to disable the irq here. A work | |
471 | * queue will write the PHY to disable and clear the | |
2f53e904 SS |
472 | * interrupt, and then reenable the irq line. |
473 | */ | |
e1393456 | 474 | disable_irq_nosync(irq); |
0ac49527 | 475 | atomic_inc(&phydev->irq_disable); |
e1393456 | 476 | |
bbb47bde | 477 | queue_work(system_power_efficient_wq, &phydev->phy_queue); |
e1393456 AF |
478 | |
479 | return IRQ_HANDLED; | |
480 | } | |
481 | ||
b3df0da8 RD |
482 | /** |
483 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
484 | * @phydev: target phy_device struct | |
485 | */ | |
89ff05ec | 486 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 487 | { |
553fe92b | 488 | int err = phy_clear_interrupt(phydev); |
00db8189 | 489 | |
e1393456 AF |
490 | if (err < 0) |
491 | return err; | |
00db8189 | 492 | |
553fe92b | 493 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 494 | } |
00db8189 | 495 | |
b3df0da8 RD |
496 | /** |
497 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
498 | * @phydev: target phy_device struct | |
499 | */ | |
89ff05ec | 500 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
501 | { |
502 | int err; | |
503 | ||
504 | /* Disable PHY interrupts */ | |
505 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
00db8189 AF |
506 | if (err) |
507 | goto phy_err; | |
508 | ||
509 | /* Clear the interrupt */ | |
510 | err = phy_clear_interrupt(phydev); | |
00db8189 AF |
511 | if (err) |
512 | goto phy_err; | |
513 | ||
514 | return 0; | |
515 | ||
516 | phy_err: | |
517 | phy_error(phydev); | |
518 | ||
519 | return err; | |
520 | } | |
e1393456 | 521 | |
b3df0da8 RD |
522 | /** |
523 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
524 | * @phydev: target phy_device struct | |
e1393456 | 525 | * |
b3df0da8 RD |
526 | * Description: Request the interrupt for the given PHY. |
527 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 528 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 529 | * This should only be called with a valid IRQ number. |
b3df0da8 | 530 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
531 | */ |
532 | int phy_start_interrupts(struct phy_device *phydev) | |
533 | { | |
0ac49527 | 534 | atomic_set(&phydev->irq_disable, 0); |
33c133cc SS |
535 | if (request_irq(phydev->irq, phy_interrupt, 0, "phy_interrupt", |
536 | phydev) < 0) { | |
8d242488 JP |
537 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
538 | phydev->bus->name, phydev->irq); | |
e1393456 AF |
539 | phydev->irq = PHY_POLL; |
540 | return 0; | |
541 | } | |
542 | ||
e62a768f | 543 | return phy_enable_interrupts(phydev); |
e1393456 AF |
544 | } |
545 | EXPORT_SYMBOL(phy_start_interrupts); | |
546 | ||
b3df0da8 RD |
547 | /** |
548 | * phy_stop_interrupts - disable interrupts from a PHY device | |
549 | * @phydev: target phy_device struct | |
550 | */ | |
e1393456 AF |
551 | int phy_stop_interrupts(struct phy_device *phydev) |
552 | { | |
553fe92b | 553 | int err = phy_disable_interrupts(phydev); |
e1393456 AF |
554 | |
555 | if (err) | |
556 | phy_error(phydev); | |
557 | ||
0ac49527 MR |
558 | free_irq(phydev->irq, phydev); |
559 | ||
2f53e904 | 560 | /* Cannot call flush_scheduled_work() here as desired because |
0ac49527 MR |
561 | * of rtnl_lock(), but we do not really care about what would |
562 | * be done, except from enable_irq(), so cancel any work | |
563 | * possibly pending and take care of the matter below. | |
3c3070d7 | 564 | */ |
28e53bdd | 565 | cancel_work_sync(&phydev->phy_queue); |
2f53e904 | 566 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
567 | * been left unbalanced from phy_interrupt() and enable_irq() |
568 | * has to be called so that other devices on the line work. | |
569 | */ | |
570 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
571 | enable_irq(phydev->irq); | |
e1393456 AF |
572 | |
573 | return err; | |
574 | } | |
575 | EXPORT_SYMBOL(phy_stop_interrupts); | |
576 | ||
b3df0da8 RD |
577 | /** |
578 | * phy_change - Scheduled by the phy_interrupt/timer to handle PHY changes | |
579 | * @work: work_struct that describes the work to be done | |
580 | */ | |
5ea94e76 | 581 | void phy_change(struct work_struct *work) |
e1393456 | 582 | { |
c4028958 DH |
583 | struct phy_device *phydev = |
584 | container_of(work, struct phy_device, phy_queue); | |
e1393456 | 585 | |
a8729eb3 AG |
586 | if (phydev->drv->did_interrupt && |
587 | !phydev->drv->did_interrupt(phydev)) | |
588 | goto ignore; | |
589 | ||
e62a768f | 590 | if (phy_disable_interrupts(phydev)) |
e1393456 AF |
591 | goto phy_err; |
592 | ||
35b5f6b1 | 593 | mutex_lock(&phydev->lock); |
e1393456 AF |
594 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
595 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 596 | mutex_unlock(&phydev->lock); |
e1393456 | 597 | |
0ac49527 | 598 | atomic_dec(&phydev->irq_disable); |
e1393456 AF |
599 | enable_irq(phydev->irq); |
600 | ||
601 | /* Reenable interrupts */ | |
e62a768f SS |
602 | if (PHY_HALTED != phydev->state && |
603 | phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) | |
e1393456 AF |
604 | goto irq_enable_err; |
605 | ||
a390d1f3 MS |
606 | /* reschedule state queue work to run as soon as possible */ |
607 | cancel_delayed_work_sync(&phydev->state_queue); | |
bbb47bde | 608 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); |
e1393456 AF |
609 | return; |
610 | ||
a8729eb3 AG |
611 | ignore: |
612 | atomic_dec(&phydev->irq_disable); | |
613 | enable_irq(phydev->irq); | |
614 | return; | |
615 | ||
e1393456 AF |
616 | irq_enable_err: |
617 | disable_irq(phydev->irq); | |
0ac49527 | 618 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
619 | phy_err: |
620 | phy_error(phydev); | |
621 | } | |
622 | ||
b3df0da8 RD |
623 | /** |
624 | * phy_stop - Bring down the PHY link, and stop checking the status | |
625 | * @phydev: target phy_device struct | |
626 | */ | |
e1393456 AF |
627 | void phy_stop(struct phy_device *phydev) |
628 | { | |
35b5f6b1 | 629 | mutex_lock(&phydev->lock); |
e1393456 AF |
630 | |
631 | if (PHY_HALTED == phydev->state) | |
632 | goto out_unlock; | |
633 | ||
2c7b4921 | 634 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
635 | /* Disable PHY Interrupts */ |
636 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 637 | |
3c3070d7 MR |
638 | /* Clear any pending interrupts */ |
639 | phy_clear_interrupt(phydev); | |
640 | } | |
e1393456 | 641 | |
6daf6531 MR |
642 | phydev->state = PHY_HALTED; |
643 | ||
e1393456 | 644 | out_unlock: |
35b5f6b1 | 645 | mutex_unlock(&phydev->lock); |
3c3070d7 | 646 | |
2f53e904 | 647 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
648 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
649 | * will not reenable interrupts. | |
650 | */ | |
e1393456 | 651 | } |
2f53e904 | 652 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 653 | |
b3df0da8 RD |
654 | /** |
655 | * phy_start - start or restart a PHY device | |
656 | * @phydev: target phy_device struct | |
e1393456 | 657 | * |
b3df0da8 | 658 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
659 | * handle PHY-related work. Used during startup to start the |
660 | * PHY, and after a call to phy_stop() to resume operation. | |
661 | * Also used to indicate the MDIO bus has cleared an error | |
662 | * condition. | |
663 | */ | |
664 | void phy_start(struct phy_device *phydev) | |
665 | { | |
35b5f6b1 | 666 | mutex_lock(&phydev->lock); |
e1393456 AF |
667 | |
668 | switch (phydev->state) { | |
e109374f FF |
669 | case PHY_STARTING: |
670 | phydev->state = PHY_PENDING; | |
671 | break; | |
672 | case PHY_READY: | |
673 | phydev->state = PHY_UP; | |
674 | break; | |
675 | case PHY_HALTED: | |
676 | phydev->state = PHY_RESUMING; | |
677 | default: | |
678 | break; | |
e1393456 | 679 | } |
35b5f6b1 | 680 | mutex_unlock(&phydev->lock); |
e1393456 | 681 | } |
e1393456 | 682 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 683 | |
35b5f6b1 NC |
684 | /** |
685 | * phy_state_machine - Handle the state machine | |
686 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 687 | */ |
4f9c85a1 | 688 | void phy_state_machine(struct work_struct *work) |
00db8189 | 689 | { |
bf6aede7 | 690 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 691 | struct phy_device *phydev = |
a390d1f3 | 692 | container_of(dwork, struct phy_device, state_queue); |
be9dad1f | 693 | int needs_aneg = 0, do_suspend = 0; |
00db8189 AF |
694 | int err = 0; |
695 | ||
35b5f6b1 | 696 | mutex_lock(&phydev->lock); |
00db8189 | 697 | |
e109374f FF |
698 | switch (phydev->state) { |
699 | case PHY_DOWN: | |
700 | case PHY_STARTING: | |
701 | case PHY_READY: | |
702 | case PHY_PENDING: | |
703 | break; | |
704 | case PHY_UP: | |
705 | needs_aneg = 1; | |
00db8189 | 706 | |
e109374f FF |
707 | phydev->link_timeout = PHY_AN_TIMEOUT; |
708 | ||
709 | break; | |
710 | case PHY_AN: | |
711 | err = phy_read_status(phydev); | |
e109374f | 712 | if (err < 0) |
00db8189 | 713 | break; |
6b655529 | 714 | |
2f53e904 | 715 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
716 | if (!phydev->link) { |
717 | phydev->state = PHY_NOLINK; | |
718 | netif_carrier_off(phydev->attached_dev); | |
719 | phydev->adjust_link(phydev->attached_dev); | |
720 | break; | |
721 | } | |
6b655529 | 722 | |
2f53e904 | 723 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
724 | err = phy_aneg_done(phydev); |
725 | if (err < 0) | |
726 | break; | |
6b655529 | 727 | |
e109374f FF |
728 | /* If AN is done, we're running */ |
729 | if (err > 0) { | |
730 | phydev->state = PHY_RUNNING; | |
731 | netif_carrier_on(phydev->attached_dev); | |
732 | phydev->adjust_link(phydev->attached_dev); | |
00db8189 | 733 | |
e109374f FF |
734 | } else if (0 == phydev->link_timeout--) { |
735 | needs_aneg = 1; | |
2f53e904 | 736 | /* If we have the magic_aneg bit, we try again */ |
e109374f FF |
737 | if (phydev->drv->flags & PHY_HAS_MAGICANEG) |
738 | break; | |
739 | } | |
740 | break; | |
741 | case PHY_NOLINK: | |
742 | err = phy_read_status(phydev); | |
e109374f | 743 | if (err) |
00db8189 | 744 | break; |
00db8189 | 745 | |
e109374f FF |
746 | if (phydev->link) { |
747 | phydev->state = PHY_RUNNING; | |
748 | netif_carrier_on(phydev->attached_dev); | |
749 | phydev->adjust_link(phydev->attached_dev); | |
750 | } | |
751 | break; | |
752 | case PHY_FORCING: | |
753 | err = genphy_update_link(phydev); | |
e109374f | 754 | if (err) |
00db8189 | 755 | break; |
00db8189 | 756 | |
e109374f FF |
757 | if (phydev->link) { |
758 | phydev->state = PHY_RUNNING; | |
759 | netif_carrier_on(phydev->attached_dev); | |
760 | } else { | |
761 | if (0 == phydev->link_timeout--) | |
762 | needs_aneg = 1; | |
763 | } | |
00db8189 | 764 | |
e109374f FF |
765 | phydev->adjust_link(phydev->attached_dev); |
766 | break; | |
767 | case PHY_RUNNING: | |
768 | /* Only register a CHANGE if we are | |
769 | * polling or ignoring interrupts | |
770 | */ | |
771 | if (!phy_interrupt_is_valid(phydev)) | |
772 | phydev->state = PHY_CHANGELINK; | |
773 | break; | |
774 | case PHY_CHANGELINK: | |
775 | err = phy_read_status(phydev); | |
e109374f | 776 | if (err) |
00db8189 | 777 | break; |
00db8189 | 778 | |
e109374f FF |
779 | if (phydev->link) { |
780 | phydev->state = PHY_RUNNING; | |
781 | netif_carrier_on(phydev->attached_dev); | |
782 | } else { | |
783 | phydev->state = PHY_NOLINK; | |
784 | netif_carrier_off(phydev->attached_dev); | |
785 | } | |
00db8189 | 786 | |
e109374f | 787 | phydev->adjust_link(phydev->attached_dev); |
00db8189 | 788 | |
e109374f FF |
789 | if (phy_interrupt_is_valid(phydev)) |
790 | err = phy_config_interrupt(phydev, | |
2f53e904 | 791 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
792 | break; |
793 | case PHY_HALTED: | |
794 | if (phydev->link) { | |
795 | phydev->link = 0; | |
796 | netif_carrier_off(phydev->attached_dev); | |
00db8189 | 797 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
798 | do_suspend = 1; |
799 | } | |
800 | break; | |
801 | case PHY_RESUMING: | |
e109374f | 802 | err = phy_clear_interrupt(phydev); |
e109374f FF |
803 | if (err) |
804 | break; | |
00db8189 | 805 | |
2f53e904 | 806 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
e109374f FF |
807 | if (err) |
808 | break; | |
00db8189 | 809 | |
e109374f FF |
810 | if (AUTONEG_ENABLE == phydev->autoneg) { |
811 | err = phy_aneg_done(phydev); | |
812 | if (err < 0) | |
00db8189 AF |
813 | break; |
814 | ||
e109374f | 815 | /* err > 0 if AN is done. |
2f53e904 SS |
816 | * Otherwise, it's 0, and we're still waiting for AN |
817 | */ | |
e109374f | 818 | if (err > 0) { |
42caa074 WF |
819 | err = phy_read_status(phydev); |
820 | if (err) | |
821 | break; | |
822 | ||
823 | if (phydev->link) { | |
824 | phydev->state = PHY_RUNNING; | |
825 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 826 | } else { |
42caa074 | 827 | phydev->state = PHY_NOLINK; |
2f53e904 | 828 | } |
42caa074 | 829 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
830 | } else { |
831 | phydev->state = PHY_AN; | |
832 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 833 | } |
e109374f FF |
834 | } else { |
835 | err = phy_read_status(phydev); | |
836 | if (err) | |
837 | break; | |
838 | ||
839 | if (phydev->link) { | |
840 | phydev->state = PHY_RUNNING; | |
841 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 842 | } else { |
e109374f | 843 | phydev->state = PHY_NOLINK; |
2f53e904 | 844 | } |
e109374f FF |
845 | phydev->adjust_link(phydev->attached_dev); |
846 | } | |
847 | break; | |
00db8189 AF |
848 | } |
849 | ||
35b5f6b1 | 850 | mutex_unlock(&phydev->lock); |
00db8189 AF |
851 | |
852 | if (needs_aneg) | |
853 | err = phy_start_aneg(phydev); | |
854 | ||
be9dad1f SH |
855 | if (do_suspend) |
856 | phy_suspend(phydev); | |
857 | ||
00db8189 AF |
858 | if (err < 0) |
859 | phy_error(phydev); | |
860 | ||
bbb47bde | 861 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, |
2f53e904 | 862 | PHY_STATE_TIME * HZ); |
35b5f6b1 | 863 | } |
a59a4d19 | 864 | |
5ea94e76 FF |
865 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
866 | { | |
867 | cancel_work_sync(&phydev->phy_queue); | |
868 | phydev->link = new_link; | |
869 | schedule_work(&phydev->phy_queue); | |
870 | } | |
871 | EXPORT_SYMBOL(phy_mac_interrupt); | |
872 | ||
a59a4d19 GC |
873 | static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad, |
874 | int addr) | |
875 | { | |
876 | /* Write the desired MMD Devad */ | |
877 | bus->write(bus, addr, MII_MMD_CTRL, devad); | |
878 | ||
879 | /* Write the desired MMD register address */ | |
880 | bus->write(bus, addr, MII_MMD_DATA, prtad); | |
881 | ||
882 | /* Select the Function : DATA with no post increment */ | |
883 | bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
884 | } | |
885 | ||
886 | /** | |
887 | * phy_read_mmd_indirect - reads data from the MMD registers | |
888 | * @bus: the target MII bus | |
889 | * @prtad: MMD Address | |
890 | * @devad: MMD DEVAD | |
891 | * @addr: PHY address on the MII bus | |
892 | * | |
893 | * Description: it reads data from the MMD registers (clause 22 to access to | |
894 | * clause 45) of the specified phy address. | |
895 | * To read these register we have: | |
896 | * 1) Write reg 13 // DEVAD | |
897 | * 2) Write reg 14 // MMD Address | |
898 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
899 | * 3) Read reg 14 // Read MMD data | |
900 | */ | |
901 | static int phy_read_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
902 | int addr) | |
903 | { | |
a59a4d19 GC |
904 | mmd_phy_indirect(bus, prtad, devad, addr); |
905 | ||
906 | /* Read the content of the MMD's selected register */ | |
e62a768f | 907 | return bus->read(bus, addr, MII_MMD_DATA); |
a59a4d19 GC |
908 | } |
909 | ||
910 | /** | |
911 | * phy_write_mmd_indirect - writes data to the MMD registers | |
912 | * @bus: the target MII bus | |
913 | * @prtad: MMD Address | |
914 | * @devad: MMD DEVAD | |
915 | * @addr: PHY address on the MII bus | |
916 | * @data: data to write in the MMD register | |
917 | * | |
918 | * Description: Write data from the MMD registers of the specified | |
919 | * phy address. | |
920 | * To write these register we have: | |
921 | * 1) Write reg 13 // DEVAD | |
922 | * 2) Write reg 14 // MMD Address | |
923 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
924 | * 3) Write reg 14 // Write MMD data | |
925 | */ | |
926 | static void phy_write_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
927 | int addr, u32 data) | |
928 | { | |
929 | mmd_phy_indirect(bus, prtad, devad, addr); | |
930 | ||
931 | /* Write the data into MMD's selected register */ | |
932 | bus->write(bus, addr, MII_MMD_DATA, data); | |
933 | } | |
934 | ||
a59a4d19 GC |
935 | /** |
936 | * phy_init_eee - init and check the EEE feature | |
937 | * @phydev: target phy_device struct | |
938 | * @clk_stop_enable: PHY may stop the clock during LPI | |
939 | * | |
940 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
941 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
942 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
943 | * bit if required. | |
944 | */ | |
945 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
946 | { | |
a59a4d19 GC |
947 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
948 | * Also EEE feature is active when core is operating with MII, GMII | |
949 | * or RGMII. | |
950 | */ | |
951 | if ((phydev->duplex == DUPLEX_FULL) && | |
952 | ((phydev->interface == PHY_INTERFACE_MODE_MII) || | |
953 | (phydev->interface == PHY_INTERFACE_MODE_GMII) || | |
954 | (phydev->interface == PHY_INTERFACE_MODE_RGMII))) { | |
955 | int eee_lp, eee_cap, eee_adv; | |
956 | u32 lp, cap, adv; | |
957 | int idx, status; | |
958 | ||
959 | /* Read phy status to properly get the right settings */ | |
960 | status = phy_read_status(phydev); | |
961 | if (status) | |
962 | return status; | |
963 | ||
964 | /* First check if the EEE ability is supported */ | |
965 | eee_cap = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
966 | MDIO_MMD_PCS, phydev->addr); | |
967 | if (eee_cap < 0) | |
968 | return eee_cap; | |
969 | ||
b32607dd | 970 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 971 | if (!cap) |
e62a768f | 972 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
973 | |
974 | /* Check which link settings negotiated and verify it in | |
975 | * the EEE advertising registers. | |
976 | */ | |
977 | eee_lp = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
978 | MDIO_MMD_AN, phydev->addr); | |
979 | if (eee_lp < 0) | |
980 | return eee_lp; | |
981 | ||
982 | eee_adv = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
983 | MDIO_MMD_AN, phydev->addr); | |
984 | if (eee_adv < 0) | |
985 | return eee_adv; | |
986 | ||
b32607dd AB |
987 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
988 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
a59a4d19 | 989 | idx = phy_find_setting(phydev->speed, phydev->duplex); |
9a9c56cb | 990 | if (!(lp & adv & settings[idx].setting)) |
e62a768f | 991 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
992 | |
993 | if (clk_stop_enable) { | |
994 | /* Configure the PHY to stop receiving xMII | |
995 | * clock while it is signaling LPI. | |
996 | */ | |
997 | int val = phy_read_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
998 | MDIO_MMD_PCS, | |
999 | phydev->addr); | |
1000 | if (val < 0) | |
1001 | return val; | |
1002 | ||
1003 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
1004 | phy_write_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1005 | MDIO_MMD_PCS, phydev->addr, val); | |
1006 | } | |
1007 | ||
e62a768f | 1008 | return 0; /* EEE supported */ |
a59a4d19 GC |
1009 | } |
1010 | ||
e62a768f | 1011 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1012 | } |
1013 | EXPORT_SYMBOL(phy_init_eee); | |
1014 | ||
1015 | /** | |
1016 | * phy_get_eee_err - report the EEE wake error count | |
1017 | * @phydev: target phy_device struct | |
1018 | * | |
1019 | * Description: it is to report the number of time where the PHY | |
1020 | * failed to complete its normal wake sequence. | |
1021 | */ | |
1022 | int phy_get_eee_err(struct phy_device *phydev) | |
1023 | { | |
1024 | return phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_WK_ERR, | |
1025 | MDIO_MMD_PCS, phydev->addr); | |
a59a4d19 GC |
1026 | } |
1027 | EXPORT_SYMBOL(phy_get_eee_err); | |
1028 | ||
1029 | /** | |
1030 | * phy_ethtool_get_eee - get EEE supported and status | |
1031 | * @phydev: target phy_device struct | |
1032 | * @data: ethtool_eee data | |
1033 | * | |
1034 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1035 | * capabilities. | |
1036 | */ | |
1037 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1038 | { | |
1039 | int val; | |
1040 | ||
1041 | /* Get Supported EEE */ | |
1042 | val = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
1043 | MDIO_MMD_PCS, phydev->addr); | |
1044 | if (val < 0) | |
1045 | return val; | |
b32607dd | 1046 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1047 | |
1048 | /* Get advertisement EEE */ | |
1049 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1050 | MDIO_MMD_AN, phydev->addr); | |
1051 | if (val < 0) | |
1052 | return val; | |
b32607dd | 1053 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1054 | |
1055 | /* Get LP advertisement EEE */ | |
1056 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
1057 | MDIO_MMD_AN, phydev->addr); | |
1058 | if (val < 0) | |
1059 | return val; | |
b32607dd | 1060 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1061 | |
1062 | return 0; | |
1063 | } | |
1064 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1065 | ||
1066 | /** | |
1067 | * phy_ethtool_set_eee - set EEE supported and status | |
1068 | * @phydev: target phy_device struct | |
1069 | * @data: ethtool_eee data | |
1070 | * | |
1071 | * Description: it is to program the Advertisement EEE register. | |
1072 | */ | |
1073 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1074 | { | |
553fe92b | 1075 | int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised); |
a59a4d19 | 1076 | |
a59a4d19 GC |
1077 | phy_write_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, MDIO_MMD_AN, |
1078 | phydev->addr, val); | |
1079 | ||
1080 | return 0; | |
1081 | } | |
1082 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1083 | |
1084 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1085 | { | |
1086 | if (phydev->drv->set_wol) | |
1087 | return phydev->drv->set_wol(phydev, wol); | |
1088 | ||
1089 | return -EOPNOTSUPP; | |
1090 | } | |
1091 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1092 | ||
1093 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1094 | { | |
1095 | if (phydev->drv->get_wol) | |
1096 | phydev->drv->get_wol(phydev, wol); | |
1097 | } | |
1098 | EXPORT_SYMBOL(phy_ethtool_get_wol); |