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2f53e904 | 1 | /* Framework for configuring and reading PHY devices |
00db8189 AF |
2 | * Based on code in sungem_phy.c and gianfar_phy.c |
3 | * | |
4 | * Author: Andy Fleming | |
5 | * | |
6 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
0ac49527 | 7 | * Copyright (c) 2006, 2007 Maciej W. Rozycki |
00db8189 AF |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | * | |
14 | */ | |
8d242488 JP |
15 | |
16 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
17 | ||
00db8189 | 18 | #include <linux/kernel.h> |
00db8189 AF |
19 | #include <linux/string.h> |
20 | #include <linux/errno.h> | |
21 | #include <linux/unistd.h> | |
00db8189 | 22 | #include <linux/interrupt.h> |
00db8189 AF |
23 | #include <linux/delay.h> |
24 | #include <linux/netdevice.h> | |
25 | #include <linux/etherdevice.h> | |
26 | #include <linux/skbuff.h> | |
00db8189 AF |
27 | #include <linux/mm.h> |
28 | #include <linux/module.h> | |
00db8189 AF |
29 | #include <linux/mii.h> |
30 | #include <linux/ethtool.h> | |
31 | #include <linux/phy.h> | |
3c3070d7 MR |
32 | #include <linux/timer.h> |
33 | #include <linux/workqueue.h> | |
a59a4d19 | 34 | #include <linux/mdio.h> |
2f53e904 SS |
35 | #include <linux/io.h> |
36 | #include <linux/uaccess.h> | |
60063497 | 37 | #include <linux/atomic.h> |
2f53e904 | 38 | |
00db8189 | 39 | #include <asm/irq.h> |
00db8189 | 40 | |
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) { |
43b6329f | 48 | netdev_info(phydev->attached_dev, "Link is Up - %d/%s\n", |
8d242488 JP |
49 | phydev->speed, |
50 | DUPLEX_FULL == phydev->duplex ? "Full" : "Half"); | |
2f53e904 | 51 | } else { |
43b6329f | 52 | netdev_info(phydev->attached_dev, "Link is Down\n"); |
2f53e904 | 53 | } |
e1393456 AF |
54 | } |
55 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 56 | |
b3df0da8 RD |
57 | /** |
58 | * phy_clear_interrupt - Ack the phy device's interrupt | |
59 | * @phydev: the phy_device struct | |
60 | * | |
61 | * If the @phydev driver has an ack_interrupt function, call it to | |
62 | * ack and clear the phy device's interrupt. | |
63 | * | |
64 | * Returns 0 on success on < 0 on error. | |
65 | */ | |
89ff05ec | 66 | static int phy_clear_interrupt(struct phy_device *phydev) |
00db8189 | 67 | { |
00db8189 | 68 | if (phydev->drv->ack_interrupt) |
e62a768f | 69 | return phydev->drv->ack_interrupt(phydev); |
00db8189 | 70 | |
e62a768f | 71 | return 0; |
00db8189 AF |
72 | } |
73 | ||
b3df0da8 RD |
74 | /** |
75 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
76 | * @phydev: the phy_device struct | |
77 | * @interrupts: interrupt flags to configure for this @phydev | |
78 | * | |
79 | * Returns 0 on success on < 0 on error. | |
80 | */ | |
89ff05ec | 81 | static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
00db8189 | 82 | { |
00db8189 AF |
83 | phydev->interrupts = interrupts; |
84 | if (phydev->drv->config_intr) | |
e62a768f | 85 | return phydev->drv->config_intr(phydev); |
00db8189 | 86 | |
e62a768f | 87 | return 0; |
00db8189 AF |
88 | } |
89 | ||
90 | ||
b3df0da8 RD |
91 | /** |
92 | * phy_aneg_done - return auto-negotiation status | |
93 | * @phydev: target phy_device struct | |
00db8189 | 94 | * |
b3df0da8 | 95 | * Description: Reads the status register and returns 0 either if |
00db8189 AF |
96 | * auto-negotiation is incomplete, or if there was an error. |
97 | * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. | |
98 | */ | |
99 | static inline int phy_aneg_done(struct phy_device *phydev) | |
100 | { | |
553fe92b | 101 | int retval = phy_read(phydev, MII_BMSR); |
00db8189 AF |
102 | |
103 | return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); | |
104 | } | |
105 | ||
00db8189 | 106 | /* A structure for mapping a particular speed and duplex |
2f53e904 SS |
107 | * combination to a particular SUPPORTED and ADVERTISED value |
108 | */ | |
00db8189 AF |
109 | struct phy_setting { |
110 | int speed; | |
111 | int duplex; | |
112 | u32 setting; | |
113 | }; | |
114 | ||
115 | /* A mapping of all SUPPORTED settings to speed/duplex */ | |
f71e1309 | 116 | static const struct phy_setting settings[] = { |
00db8189 AF |
117 | { |
118 | .speed = 10000, | |
119 | .duplex = DUPLEX_FULL, | |
120 | .setting = SUPPORTED_10000baseT_Full, | |
121 | }, | |
122 | { | |
123 | .speed = SPEED_1000, | |
124 | .duplex = DUPLEX_FULL, | |
125 | .setting = SUPPORTED_1000baseT_Full, | |
126 | }, | |
127 | { | |
128 | .speed = SPEED_1000, | |
129 | .duplex = DUPLEX_HALF, | |
130 | .setting = SUPPORTED_1000baseT_Half, | |
131 | }, | |
132 | { | |
133 | .speed = SPEED_100, | |
134 | .duplex = DUPLEX_FULL, | |
135 | .setting = SUPPORTED_100baseT_Full, | |
136 | }, | |
137 | { | |
138 | .speed = SPEED_100, | |
139 | .duplex = DUPLEX_HALF, | |
140 | .setting = SUPPORTED_100baseT_Half, | |
141 | }, | |
142 | { | |
143 | .speed = SPEED_10, | |
144 | .duplex = DUPLEX_FULL, | |
145 | .setting = SUPPORTED_10baseT_Full, | |
146 | }, | |
147 | { | |
148 | .speed = SPEED_10, | |
149 | .duplex = DUPLEX_HALF, | |
150 | .setting = SUPPORTED_10baseT_Half, | |
151 | }, | |
152 | }; | |
153 | ||
ff8ac609 | 154 | #define MAX_NUM_SETTINGS ARRAY_SIZE(settings) |
00db8189 | 155 | |
b3df0da8 RD |
156 | /** |
157 | * phy_find_setting - find a PHY settings array entry that matches speed & duplex | |
158 | * @speed: speed to match | |
159 | * @duplex: duplex to match | |
00db8189 | 160 | * |
b3df0da8 | 161 | * Description: Searches the settings array for the setting which |
00db8189 AF |
162 | * matches the desired speed and duplex, and returns the index |
163 | * of that setting. Returns the index of the last setting if | |
164 | * none of the others match. | |
165 | */ | |
166 | static inline int phy_find_setting(int speed, int duplex) | |
167 | { | |
168 | int idx = 0; | |
169 | ||
170 | while (idx < ARRAY_SIZE(settings) && | |
2f53e904 | 171 | (settings[idx].speed != speed || settings[idx].duplex != duplex)) |
00db8189 AF |
172 | idx++; |
173 | ||
174 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
175 | } | |
176 | ||
b3df0da8 RD |
177 | /** |
178 | * phy_find_valid - find a PHY setting that matches the requested features mask | |
179 | * @idx: The first index in settings[] to search | |
180 | * @features: A mask of the valid settings | |
00db8189 | 181 | * |
b3df0da8 | 182 | * Description: Returns the index of the first valid setting less |
00db8189 AF |
183 | * than or equal to the one pointed to by idx, as determined by |
184 | * the mask in features. Returns the index of the last setting | |
185 | * if nothing else matches. | |
186 | */ | |
187 | static inline int phy_find_valid(int idx, u32 features) | |
188 | { | |
189 | while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) | |
190 | idx++; | |
191 | ||
192 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
193 | } | |
194 | ||
b3df0da8 RD |
195 | /** |
196 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
197 | * @phydev: the target phy_device struct | |
00db8189 | 198 | * |
b3df0da8 | 199 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 200 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 201 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 202 | */ |
89ff05ec | 203 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 AF |
204 | { |
205 | u32 features = phydev->supported; | |
206 | int idx; | |
207 | ||
208 | /* Sanitize settings based on PHY capabilities */ | |
209 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 210 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 AF |
211 | |
212 | idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), | |
213 | features); | |
214 | ||
215 | phydev->speed = settings[idx].speed; | |
216 | phydev->duplex = settings[idx].duplex; | |
217 | } | |
00db8189 | 218 | |
b3df0da8 RD |
219 | /** |
220 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
221 | * @phydev: target phy_device struct | |
222 | * @cmd: ethtool_cmd | |
00db8189 AF |
223 | * |
224 | * A few notes about parameter checking: | |
225 | * - We don't set port or transceiver, so we don't care what they | |
226 | * were set to. | |
227 | * - phy_start_aneg() will make sure forced settings are sane, and | |
228 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 229 | * care if ethtool tries to give us bad values. |
00db8189 AF |
230 | */ |
231 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
232 | { | |
25db0338 DD |
233 | u32 speed = ethtool_cmd_speed(cmd); |
234 | ||
00db8189 AF |
235 | if (cmd->phy_address != phydev->addr) |
236 | return -EINVAL; | |
237 | ||
2f53e904 | 238 | /* We make sure that we don't pass unsupported values in to the PHY */ |
00db8189 AF |
239 | cmd->advertising &= phydev->supported; |
240 | ||
241 | /* Verify the settings we care about. */ | |
242 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
243 | return -EINVAL; | |
244 | ||
245 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
246 | return -EINVAL; | |
247 | ||
8e95a202 | 248 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
249 | ((speed != SPEED_1000 && |
250 | speed != SPEED_100 && | |
251 | speed != SPEED_10) || | |
8e95a202 JP |
252 | (cmd->duplex != DUPLEX_HALF && |
253 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
254 | return -EINVAL; |
255 | ||
256 | phydev->autoneg = cmd->autoneg; | |
257 | ||
25db0338 | 258 | phydev->speed = speed; |
00db8189 AF |
259 | |
260 | phydev->advertising = cmd->advertising; | |
261 | ||
262 | if (AUTONEG_ENABLE == cmd->autoneg) | |
263 | phydev->advertising |= ADVERTISED_Autoneg; | |
264 | else | |
265 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
266 | ||
267 | phydev->duplex = cmd->duplex; | |
268 | ||
269 | /* Restart the PHY */ | |
270 | phy_start_aneg(phydev); | |
271 | ||
272 | return 0; | |
273 | } | |
9f6d55d0 | 274 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 AF |
275 | |
276 | int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
277 | { | |
278 | cmd->supported = phydev->supported; | |
279 | ||
280 | cmd->advertising = phydev->advertising; | |
114002bc | 281 | cmd->lp_advertising = phydev->lp_advertising; |
00db8189 | 282 | |
70739497 | 283 | ethtool_cmd_speed_set(cmd, phydev->speed); |
00db8189 AF |
284 | cmd->duplex = phydev->duplex; |
285 | cmd->port = PORT_MII; | |
286 | cmd->phy_address = phydev->addr; | |
4284b6a5 FF |
287 | cmd->transceiver = phy_is_internal(phydev) ? |
288 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
00db8189 AF |
289 | cmd->autoneg = phydev->autoneg; |
290 | ||
291 | return 0; | |
292 | } | |
9f6d55d0 | 293 | EXPORT_SYMBOL(phy_ethtool_gset); |
00db8189 | 294 | |
b3df0da8 RD |
295 | /** |
296 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
297 | * @phydev: the phy_device struct | |
00c7d920 | 298 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
299 | * @cmd: ioctl cmd to execute |
300 | * | |
301 | * Note that this function is currently incompatible with the | |
00db8189 | 302 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 303 | * current state. Use at own risk. |
00db8189 | 304 | */ |
2f53e904 | 305 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 306 | { |
28b04113 | 307 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 AF |
308 | u16 val = mii_data->val_in; |
309 | ||
310 | switch (cmd) { | |
311 | case SIOCGMIIPHY: | |
312 | mii_data->phy_id = phydev->addr; | |
c6d6a511 LB |
313 | /* fall through */ |
314 | ||
00db8189 | 315 | case SIOCGMIIREG: |
af1dc13e PK |
316 | mii_data->val_out = mdiobus_read(phydev->bus, mii_data->phy_id, |
317 | mii_data->reg_num); | |
e62a768f | 318 | return 0; |
00db8189 AF |
319 | |
320 | case SIOCSMIIREG: | |
00db8189 | 321 | if (mii_data->phy_id == phydev->addr) { |
e109374f | 322 | switch (mii_data->reg_num) { |
00db8189 | 323 | case MII_BMCR: |
2f53e904 | 324 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) |
00db8189 AF |
325 | phydev->autoneg = AUTONEG_DISABLE; |
326 | else | |
327 | phydev->autoneg = AUTONEG_ENABLE; | |
2f53e904 | 328 | if (!phydev->autoneg && (val & BMCR_FULLDPLX)) |
00db8189 AF |
329 | phydev->duplex = DUPLEX_FULL; |
330 | else | |
331 | phydev->duplex = DUPLEX_HALF; | |
2f53e904 | 332 | if (!phydev->autoneg && (val & BMCR_SPEED1000)) |
024a0a3c | 333 | phydev->speed = SPEED_1000; |
2f53e904 SS |
334 | else if (!phydev->autoneg && |
335 | (val & BMCR_SPEED100)) | |
024a0a3c | 336 | phydev->speed = SPEED_100; |
00db8189 AF |
337 | break; |
338 | case MII_ADVERTISE: | |
339 | phydev->advertising = val; | |
340 | break; | |
341 | default: | |
342 | /* do nothing */ | |
343 | break; | |
344 | } | |
345 | } | |
346 | ||
af1dc13e PK |
347 | mdiobus_write(phydev->bus, mii_data->phy_id, |
348 | mii_data->reg_num, val); | |
349 | ||
8e95a202 | 350 | if (mii_data->reg_num == MII_BMCR && |
2613f95f | 351 | val & BMCR_RESET) |
e62a768f SS |
352 | return phy_init_hw(phydev); |
353 | return 0; | |
dda93b48 | 354 | |
c1f19b51 RC |
355 | case SIOCSHWTSTAMP: |
356 | if (phydev->drv->hwtstamp) | |
357 | return phydev->drv->hwtstamp(phydev, ifr); | |
358 | /* fall through */ | |
359 | ||
dda93b48 | 360 | default: |
c6d6a511 | 361 | return -EOPNOTSUPP; |
00db8189 | 362 | } |
00db8189 | 363 | } |
680e9fe9 | 364 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 365 | |
b3df0da8 RD |
366 | /** |
367 | * phy_start_aneg - start auto-negotiation for this PHY device | |
368 | * @phydev: the phy_device struct | |
e1393456 | 369 | * |
b3df0da8 RD |
370 | * Description: Sanitizes the settings (if we're not autonegotiating |
371 | * them), and then calls the driver's config_aneg function. | |
372 | * If the PHYCONTROL Layer is operating, we change the state to | |
373 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 AF |
374 | */ |
375 | int phy_start_aneg(struct phy_device *phydev) | |
376 | { | |
377 | int err; | |
378 | ||
35b5f6b1 | 379 | mutex_lock(&phydev->lock); |
e1393456 AF |
380 | |
381 | if (AUTONEG_DISABLE == phydev->autoneg) | |
382 | phy_sanitize_settings(phydev); | |
383 | ||
384 | err = phydev->drv->config_aneg(phydev); | |
e1393456 AF |
385 | if (err < 0) |
386 | goto out_unlock; | |
387 | ||
388 | if (phydev->state != PHY_HALTED) { | |
389 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
390 | phydev->state = PHY_AN; | |
391 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
392 | } else { | |
393 | phydev->state = PHY_FORCING; | |
394 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
395 | } | |
396 | } | |
397 | ||
398 | out_unlock: | |
35b5f6b1 | 399 | mutex_unlock(&phydev->lock); |
e1393456 AF |
400 | return err; |
401 | } | |
402 | EXPORT_SYMBOL(phy_start_aneg); | |
403 | ||
b3df0da8 RD |
404 | /** |
405 | * phy_start_machine - start PHY state machine tracking | |
406 | * @phydev: the phy_device struct | |
00db8189 | 407 | * |
b3df0da8 | 408 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
409 | * which tracks whether the PHY is starting up, negotiating, |
410 | * etc. This function starts the timer which tracks the state | |
29935aeb SS |
411 | * of the PHY. If you want to maintain your own state machine, |
412 | * do not call this function. | |
b3df0da8 | 413 | */ |
29935aeb | 414 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 415 | { |
bbb47bde | 416 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
417 | } |
418 | ||
b3df0da8 RD |
419 | /** |
420 | * phy_stop_machine - stop the PHY state machine tracking | |
421 | * @phydev: target phy_device struct | |
00db8189 | 422 | * |
b3df0da8 | 423 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 424 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
425 | * phy_detach. |
426 | */ | |
427 | void phy_stop_machine(struct phy_device *phydev) | |
428 | { | |
a390d1f3 | 429 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 430 | |
35b5f6b1 | 431 | mutex_lock(&phydev->lock); |
00db8189 AF |
432 | if (phydev->state > PHY_UP) |
433 | phydev->state = PHY_UP; | |
35b5f6b1 | 434 | mutex_unlock(&phydev->lock); |
00db8189 AF |
435 | } |
436 | ||
b3df0da8 RD |
437 | /** |
438 | * phy_error - enter HALTED state for this PHY device | |
439 | * @phydev: target phy_device struct | |
00db8189 AF |
440 | * |
441 | * Moves the PHY to the HALTED state in response to a read | |
442 | * or write error, and tells the controller the link is down. | |
443 | * Must not be called from interrupt context, or while the | |
444 | * phydev->lock is held. | |
445 | */ | |
9b9a8bfc | 446 | static void phy_error(struct phy_device *phydev) |
00db8189 | 447 | { |
35b5f6b1 | 448 | mutex_lock(&phydev->lock); |
00db8189 | 449 | phydev->state = PHY_HALTED; |
35b5f6b1 | 450 | mutex_unlock(&phydev->lock); |
00db8189 AF |
451 | } |
452 | ||
b3df0da8 RD |
453 | /** |
454 | * phy_interrupt - PHY interrupt handler | |
455 | * @irq: interrupt line | |
456 | * @phy_dat: phy_device pointer | |
e1393456 | 457 | * |
b3df0da8 | 458 | * Description: When a PHY interrupt occurs, the handler disables |
e1393456 AF |
459 | * interrupts, and schedules a work task to clear the interrupt. |
460 | */ | |
7d12e780 | 461 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
462 | { |
463 | struct phy_device *phydev = phy_dat; | |
464 | ||
3c3070d7 MR |
465 | if (PHY_HALTED == phydev->state) |
466 | return IRQ_NONE; /* It can't be ours. */ | |
467 | ||
e1393456 AF |
468 | /* The MDIO bus is not allowed to be written in interrupt |
469 | * context, so we need to disable the irq here. A work | |
470 | * queue will write the PHY to disable and clear the | |
2f53e904 SS |
471 | * interrupt, and then reenable the irq line. |
472 | */ | |
e1393456 | 473 | disable_irq_nosync(irq); |
0ac49527 | 474 | atomic_inc(&phydev->irq_disable); |
e1393456 | 475 | |
bbb47bde | 476 | queue_work(system_power_efficient_wq, &phydev->phy_queue); |
e1393456 AF |
477 | |
478 | return IRQ_HANDLED; | |
479 | } | |
480 | ||
b3df0da8 RD |
481 | /** |
482 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
483 | * @phydev: target phy_device struct | |
484 | */ | |
89ff05ec | 485 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 486 | { |
553fe92b | 487 | int err = phy_clear_interrupt(phydev); |
00db8189 | 488 | |
e1393456 AF |
489 | if (err < 0) |
490 | return err; | |
00db8189 | 491 | |
553fe92b | 492 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 493 | } |
00db8189 | 494 | |
b3df0da8 RD |
495 | /** |
496 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
497 | * @phydev: target phy_device struct | |
498 | */ | |
89ff05ec | 499 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
500 | { |
501 | int err; | |
502 | ||
503 | /* Disable PHY interrupts */ | |
504 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
00db8189 AF |
505 | if (err) |
506 | goto phy_err; | |
507 | ||
508 | /* Clear the interrupt */ | |
509 | err = phy_clear_interrupt(phydev); | |
00db8189 AF |
510 | if (err) |
511 | goto phy_err; | |
512 | ||
513 | return 0; | |
514 | ||
515 | phy_err: | |
516 | phy_error(phydev); | |
517 | ||
518 | return err; | |
519 | } | |
e1393456 | 520 | |
b3df0da8 RD |
521 | /** |
522 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
523 | * @phydev: target phy_device struct | |
e1393456 | 524 | * |
b3df0da8 RD |
525 | * Description: Request the interrupt for the given PHY. |
526 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 527 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 528 | * This should only be called with a valid IRQ number. |
b3df0da8 | 529 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
530 | */ |
531 | int phy_start_interrupts(struct phy_device *phydev) | |
532 | { | |
0ac49527 | 533 | atomic_set(&phydev->irq_disable, 0); |
33c133cc SS |
534 | if (request_irq(phydev->irq, phy_interrupt, 0, "phy_interrupt", |
535 | phydev) < 0) { | |
8d242488 JP |
536 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
537 | phydev->bus->name, phydev->irq); | |
e1393456 AF |
538 | phydev->irq = PHY_POLL; |
539 | return 0; | |
540 | } | |
541 | ||
e62a768f | 542 | return phy_enable_interrupts(phydev); |
e1393456 AF |
543 | } |
544 | EXPORT_SYMBOL(phy_start_interrupts); | |
545 | ||
b3df0da8 RD |
546 | /** |
547 | * phy_stop_interrupts - disable interrupts from a PHY device | |
548 | * @phydev: target phy_device struct | |
549 | */ | |
e1393456 AF |
550 | int phy_stop_interrupts(struct phy_device *phydev) |
551 | { | |
553fe92b | 552 | int err = phy_disable_interrupts(phydev); |
e1393456 AF |
553 | |
554 | if (err) | |
555 | phy_error(phydev); | |
556 | ||
0ac49527 MR |
557 | free_irq(phydev->irq, phydev); |
558 | ||
2f53e904 | 559 | /* Cannot call flush_scheduled_work() here as desired because |
0ac49527 MR |
560 | * of rtnl_lock(), but we do not really care about what would |
561 | * be done, except from enable_irq(), so cancel any work | |
562 | * possibly pending and take care of the matter below. | |
3c3070d7 | 563 | */ |
28e53bdd | 564 | cancel_work_sync(&phydev->phy_queue); |
2f53e904 | 565 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
566 | * been left unbalanced from phy_interrupt() and enable_irq() |
567 | * has to be called so that other devices on the line work. | |
568 | */ | |
569 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
570 | enable_irq(phydev->irq); | |
e1393456 AF |
571 | |
572 | return err; | |
573 | } | |
574 | EXPORT_SYMBOL(phy_stop_interrupts); | |
575 | ||
b3df0da8 RD |
576 | /** |
577 | * phy_change - Scheduled by the phy_interrupt/timer to handle PHY changes | |
578 | * @work: work_struct that describes the work to be done | |
579 | */ | |
5ea94e76 | 580 | void phy_change(struct work_struct *work) |
e1393456 | 581 | { |
c4028958 DH |
582 | struct phy_device *phydev = |
583 | container_of(work, struct phy_device, phy_queue); | |
e1393456 | 584 | |
a8729eb3 AG |
585 | if (phydev->drv->did_interrupt && |
586 | !phydev->drv->did_interrupt(phydev)) | |
587 | goto ignore; | |
588 | ||
e62a768f | 589 | if (phy_disable_interrupts(phydev)) |
e1393456 AF |
590 | goto phy_err; |
591 | ||
35b5f6b1 | 592 | mutex_lock(&phydev->lock); |
e1393456 AF |
593 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
594 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 595 | mutex_unlock(&phydev->lock); |
e1393456 | 596 | |
0ac49527 | 597 | atomic_dec(&phydev->irq_disable); |
e1393456 AF |
598 | enable_irq(phydev->irq); |
599 | ||
600 | /* Reenable interrupts */ | |
e62a768f SS |
601 | if (PHY_HALTED != phydev->state && |
602 | phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) | |
e1393456 AF |
603 | goto irq_enable_err; |
604 | ||
a390d1f3 MS |
605 | /* reschedule state queue work to run as soon as possible */ |
606 | cancel_delayed_work_sync(&phydev->state_queue); | |
bbb47bde | 607 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); |
e1393456 AF |
608 | return; |
609 | ||
a8729eb3 AG |
610 | ignore: |
611 | atomic_dec(&phydev->irq_disable); | |
612 | enable_irq(phydev->irq); | |
613 | return; | |
614 | ||
e1393456 AF |
615 | irq_enable_err: |
616 | disable_irq(phydev->irq); | |
0ac49527 | 617 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
618 | phy_err: |
619 | phy_error(phydev); | |
620 | } | |
621 | ||
b3df0da8 RD |
622 | /** |
623 | * phy_stop - Bring down the PHY link, and stop checking the status | |
624 | * @phydev: target phy_device struct | |
625 | */ | |
e1393456 AF |
626 | void phy_stop(struct phy_device *phydev) |
627 | { | |
35b5f6b1 | 628 | mutex_lock(&phydev->lock); |
e1393456 AF |
629 | |
630 | if (PHY_HALTED == phydev->state) | |
631 | goto out_unlock; | |
632 | ||
2c7b4921 | 633 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
634 | /* Disable PHY Interrupts */ |
635 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 636 | |
3c3070d7 MR |
637 | /* Clear any pending interrupts */ |
638 | phy_clear_interrupt(phydev); | |
639 | } | |
e1393456 | 640 | |
6daf6531 MR |
641 | phydev->state = PHY_HALTED; |
642 | ||
e1393456 | 643 | out_unlock: |
35b5f6b1 | 644 | mutex_unlock(&phydev->lock); |
3c3070d7 | 645 | |
2f53e904 | 646 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
647 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
648 | * will not reenable interrupts. | |
649 | */ | |
e1393456 | 650 | } |
2f53e904 | 651 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 652 | |
b3df0da8 RD |
653 | /** |
654 | * phy_start - start or restart a PHY device | |
655 | * @phydev: target phy_device struct | |
e1393456 | 656 | * |
b3df0da8 | 657 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
658 | * handle PHY-related work. Used during startup to start the |
659 | * PHY, and after a call to phy_stop() to resume operation. | |
660 | * Also used to indicate the MDIO bus has cleared an error | |
661 | * condition. | |
662 | */ | |
663 | void phy_start(struct phy_device *phydev) | |
664 | { | |
35b5f6b1 | 665 | mutex_lock(&phydev->lock); |
e1393456 AF |
666 | |
667 | switch (phydev->state) { | |
e109374f FF |
668 | case PHY_STARTING: |
669 | phydev->state = PHY_PENDING; | |
670 | break; | |
671 | case PHY_READY: | |
672 | phydev->state = PHY_UP; | |
673 | break; | |
674 | case PHY_HALTED: | |
675 | phydev->state = PHY_RESUMING; | |
676 | default: | |
677 | break; | |
e1393456 | 678 | } |
35b5f6b1 | 679 | mutex_unlock(&phydev->lock); |
e1393456 | 680 | } |
e1393456 | 681 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 682 | |
35b5f6b1 NC |
683 | /** |
684 | * phy_state_machine - Handle the state machine | |
685 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 686 | */ |
4f9c85a1 | 687 | void phy_state_machine(struct work_struct *work) |
00db8189 | 688 | { |
bf6aede7 | 689 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 690 | struct phy_device *phydev = |
a390d1f3 | 691 | container_of(dwork, struct phy_device, state_queue); |
be9dad1f | 692 | int needs_aneg = 0, do_suspend = 0; |
00db8189 AF |
693 | int err = 0; |
694 | ||
35b5f6b1 | 695 | mutex_lock(&phydev->lock); |
00db8189 | 696 | |
e109374f FF |
697 | switch (phydev->state) { |
698 | case PHY_DOWN: | |
699 | case PHY_STARTING: | |
700 | case PHY_READY: | |
701 | case PHY_PENDING: | |
702 | break; | |
703 | case PHY_UP: | |
704 | needs_aneg = 1; | |
00db8189 | 705 | |
e109374f FF |
706 | phydev->link_timeout = PHY_AN_TIMEOUT; |
707 | ||
708 | break; | |
709 | case PHY_AN: | |
710 | err = phy_read_status(phydev); | |
e109374f | 711 | if (err < 0) |
00db8189 | 712 | break; |
6b655529 | 713 | |
2f53e904 | 714 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
715 | if (!phydev->link) { |
716 | phydev->state = PHY_NOLINK; | |
717 | netif_carrier_off(phydev->attached_dev); | |
718 | phydev->adjust_link(phydev->attached_dev); | |
719 | break; | |
720 | } | |
6b655529 | 721 | |
2f53e904 | 722 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
723 | err = phy_aneg_done(phydev); |
724 | if (err < 0) | |
725 | break; | |
6b655529 | 726 | |
e109374f FF |
727 | /* If AN is done, we're running */ |
728 | if (err > 0) { | |
729 | phydev->state = PHY_RUNNING; | |
730 | netif_carrier_on(phydev->attached_dev); | |
731 | phydev->adjust_link(phydev->attached_dev); | |
00db8189 | 732 | |
e109374f FF |
733 | } else if (0 == phydev->link_timeout--) { |
734 | needs_aneg = 1; | |
2f53e904 | 735 | /* If we have the magic_aneg bit, we try again */ |
e109374f FF |
736 | if (phydev->drv->flags & PHY_HAS_MAGICANEG) |
737 | break; | |
738 | } | |
739 | break; | |
740 | case PHY_NOLINK: | |
741 | err = phy_read_status(phydev); | |
e109374f | 742 | if (err) |
00db8189 | 743 | break; |
00db8189 | 744 | |
e109374f FF |
745 | if (phydev->link) { |
746 | phydev->state = PHY_RUNNING; | |
747 | netif_carrier_on(phydev->attached_dev); | |
748 | phydev->adjust_link(phydev->attached_dev); | |
749 | } | |
750 | break; | |
751 | case PHY_FORCING: | |
752 | err = genphy_update_link(phydev); | |
e109374f | 753 | if (err) |
00db8189 | 754 | break; |
00db8189 | 755 | |
e109374f FF |
756 | if (phydev->link) { |
757 | phydev->state = PHY_RUNNING; | |
758 | netif_carrier_on(phydev->attached_dev); | |
759 | } else { | |
760 | if (0 == phydev->link_timeout--) | |
761 | needs_aneg = 1; | |
762 | } | |
00db8189 | 763 | |
e109374f FF |
764 | phydev->adjust_link(phydev->attached_dev); |
765 | break; | |
766 | case PHY_RUNNING: | |
767 | /* Only register a CHANGE if we are | |
768 | * polling or ignoring interrupts | |
769 | */ | |
770 | if (!phy_interrupt_is_valid(phydev)) | |
771 | phydev->state = PHY_CHANGELINK; | |
772 | break; | |
773 | case PHY_CHANGELINK: | |
774 | err = phy_read_status(phydev); | |
e109374f | 775 | if (err) |
00db8189 | 776 | break; |
00db8189 | 777 | |
e109374f FF |
778 | if (phydev->link) { |
779 | phydev->state = PHY_RUNNING; | |
780 | netif_carrier_on(phydev->attached_dev); | |
781 | } else { | |
782 | phydev->state = PHY_NOLINK; | |
783 | netif_carrier_off(phydev->attached_dev); | |
784 | } | |
00db8189 | 785 | |
e109374f | 786 | phydev->adjust_link(phydev->attached_dev); |
00db8189 | 787 | |
e109374f FF |
788 | if (phy_interrupt_is_valid(phydev)) |
789 | err = phy_config_interrupt(phydev, | |
2f53e904 | 790 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
791 | break; |
792 | case PHY_HALTED: | |
793 | if (phydev->link) { | |
794 | phydev->link = 0; | |
795 | netif_carrier_off(phydev->attached_dev); | |
00db8189 | 796 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
797 | do_suspend = 1; |
798 | } | |
799 | break; | |
800 | case PHY_RESUMING: | |
e109374f | 801 | err = phy_clear_interrupt(phydev); |
e109374f FF |
802 | if (err) |
803 | break; | |
00db8189 | 804 | |
2f53e904 | 805 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
e109374f FF |
806 | if (err) |
807 | break; | |
00db8189 | 808 | |
e109374f FF |
809 | if (AUTONEG_ENABLE == phydev->autoneg) { |
810 | err = phy_aneg_done(phydev); | |
811 | if (err < 0) | |
00db8189 AF |
812 | break; |
813 | ||
e109374f | 814 | /* err > 0 if AN is done. |
2f53e904 SS |
815 | * Otherwise, it's 0, and we're still waiting for AN |
816 | */ | |
e109374f | 817 | if (err > 0) { |
42caa074 WF |
818 | err = phy_read_status(phydev); |
819 | if (err) | |
820 | break; | |
821 | ||
822 | if (phydev->link) { | |
823 | phydev->state = PHY_RUNNING; | |
824 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 825 | } else { |
42caa074 | 826 | phydev->state = PHY_NOLINK; |
2f53e904 | 827 | } |
42caa074 | 828 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
829 | } else { |
830 | phydev->state = PHY_AN; | |
831 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 832 | } |
e109374f FF |
833 | } else { |
834 | err = phy_read_status(phydev); | |
835 | if (err) | |
836 | break; | |
837 | ||
838 | if (phydev->link) { | |
839 | phydev->state = PHY_RUNNING; | |
840 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 841 | } else { |
e109374f | 842 | phydev->state = PHY_NOLINK; |
2f53e904 | 843 | } |
e109374f FF |
844 | phydev->adjust_link(phydev->attached_dev); |
845 | } | |
846 | break; | |
00db8189 AF |
847 | } |
848 | ||
35b5f6b1 | 849 | mutex_unlock(&phydev->lock); |
00db8189 AF |
850 | |
851 | if (needs_aneg) | |
852 | err = phy_start_aneg(phydev); | |
853 | ||
be9dad1f SH |
854 | if (do_suspend) |
855 | phy_suspend(phydev); | |
856 | ||
00db8189 AF |
857 | if (err < 0) |
858 | phy_error(phydev); | |
859 | ||
bbb47bde | 860 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, |
2f53e904 | 861 | PHY_STATE_TIME * HZ); |
35b5f6b1 | 862 | } |
a59a4d19 | 863 | |
5ea94e76 FF |
864 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
865 | { | |
866 | cancel_work_sync(&phydev->phy_queue); | |
867 | phydev->link = new_link; | |
868 | schedule_work(&phydev->phy_queue); | |
869 | } | |
870 | EXPORT_SYMBOL(phy_mac_interrupt); | |
871 | ||
a59a4d19 GC |
872 | static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad, |
873 | int addr) | |
874 | { | |
875 | /* Write the desired MMD Devad */ | |
876 | bus->write(bus, addr, MII_MMD_CTRL, devad); | |
877 | ||
878 | /* Write the desired MMD register address */ | |
879 | bus->write(bus, addr, MII_MMD_DATA, prtad); | |
880 | ||
881 | /* Select the Function : DATA with no post increment */ | |
882 | bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
883 | } | |
884 | ||
885 | /** | |
886 | * phy_read_mmd_indirect - reads data from the MMD registers | |
887 | * @bus: the target MII bus | |
888 | * @prtad: MMD Address | |
889 | * @devad: MMD DEVAD | |
890 | * @addr: PHY address on the MII bus | |
891 | * | |
892 | * Description: it reads data from the MMD registers (clause 22 to access to | |
893 | * clause 45) of the specified phy address. | |
894 | * To read these register we have: | |
895 | * 1) Write reg 13 // DEVAD | |
896 | * 2) Write reg 14 // MMD Address | |
897 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
898 | * 3) Read reg 14 // Read MMD data | |
899 | */ | |
900 | static int phy_read_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
901 | int addr) | |
902 | { | |
a59a4d19 GC |
903 | mmd_phy_indirect(bus, prtad, devad, addr); |
904 | ||
905 | /* Read the content of the MMD's selected register */ | |
e62a768f | 906 | return bus->read(bus, addr, MII_MMD_DATA); |
a59a4d19 GC |
907 | } |
908 | ||
909 | /** | |
910 | * phy_write_mmd_indirect - writes data to the MMD registers | |
911 | * @bus: the target MII bus | |
912 | * @prtad: MMD Address | |
913 | * @devad: MMD DEVAD | |
914 | * @addr: PHY address on the MII bus | |
915 | * @data: data to write in the MMD register | |
916 | * | |
917 | * Description: Write data from the MMD registers of the specified | |
918 | * phy address. | |
919 | * To write these register we have: | |
920 | * 1) Write reg 13 // DEVAD | |
921 | * 2) Write reg 14 // MMD Address | |
922 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
923 | * 3) Write reg 14 // Write MMD data | |
924 | */ | |
925 | static void phy_write_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
926 | int addr, u32 data) | |
927 | { | |
928 | mmd_phy_indirect(bus, prtad, devad, addr); | |
929 | ||
930 | /* Write the data into MMD's selected register */ | |
931 | bus->write(bus, addr, MII_MMD_DATA, data); | |
932 | } | |
933 | ||
a59a4d19 GC |
934 | /** |
935 | * phy_init_eee - init and check the EEE feature | |
936 | * @phydev: target phy_device struct | |
937 | * @clk_stop_enable: PHY may stop the clock during LPI | |
938 | * | |
939 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
940 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
941 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
942 | * bit if required. | |
943 | */ | |
944 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
945 | { | |
a59a4d19 GC |
946 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
947 | * Also EEE feature is active when core is operating with MII, GMII | |
948 | * or RGMII. | |
949 | */ | |
950 | if ((phydev->duplex == DUPLEX_FULL) && | |
951 | ((phydev->interface == PHY_INTERFACE_MODE_MII) || | |
952 | (phydev->interface == PHY_INTERFACE_MODE_GMII) || | |
953 | (phydev->interface == PHY_INTERFACE_MODE_RGMII))) { | |
954 | int eee_lp, eee_cap, eee_adv; | |
955 | u32 lp, cap, adv; | |
956 | int idx, status; | |
957 | ||
958 | /* Read phy status to properly get the right settings */ | |
959 | status = phy_read_status(phydev); | |
960 | if (status) | |
961 | return status; | |
962 | ||
963 | /* First check if the EEE ability is supported */ | |
964 | eee_cap = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
965 | MDIO_MMD_PCS, phydev->addr); | |
966 | if (eee_cap < 0) | |
967 | return eee_cap; | |
968 | ||
b32607dd | 969 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 970 | if (!cap) |
e62a768f | 971 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
972 | |
973 | /* Check which link settings negotiated and verify it in | |
974 | * the EEE advertising registers. | |
975 | */ | |
976 | eee_lp = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
977 | MDIO_MMD_AN, phydev->addr); | |
978 | if (eee_lp < 0) | |
979 | return eee_lp; | |
980 | ||
981 | eee_adv = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
982 | MDIO_MMD_AN, phydev->addr); | |
983 | if (eee_adv < 0) | |
984 | return eee_adv; | |
985 | ||
b32607dd AB |
986 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
987 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
a59a4d19 | 988 | idx = phy_find_setting(phydev->speed, phydev->duplex); |
9a9c56cb | 989 | if (!(lp & adv & settings[idx].setting)) |
e62a768f | 990 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
991 | |
992 | if (clk_stop_enable) { | |
993 | /* Configure the PHY to stop receiving xMII | |
994 | * clock while it is signaling LPI. | |
995 | */ | |
996 | int val = phy_read_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
997 | MDIO_MMD_PCS, | |
998 | phydev->addr); | |
999 | if (val < 0) | |
1000 | return val; | |
1001 | ||
1002 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
1003 | phy_write_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1004 | MDIO_MMD_PCS, phydev->addr, val); | |
1005 | } | |
1006 | ||
e62a768f | 1007 | return 0; /* EEE supported */ |
a59a4d19 GC |
1008 | } |
1009 | ||
e62a768f | 1010 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1011 | } |
1012 | EXPORT_SYMBOL(phy_init_eee); | |
1013 | ||
1014 | /** | |
1015 | * phy_get_eee_err - report the EEE wake error count | |
1016 | * @phydev: target phy_device struct | |
1017 | * | |
1018 | * Description: it is to report the number of time where the PHY | |
1019 | * failed to complete its normal wake sequence. | |
1020 | */ | |
1021 | int phy_get_eee_err(struct phy_device *phydev) | |
1022 | { | |
1023 | return phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_WK_ERR, | |
1024 | MDIO_MMD_PCS, phydev->addr); | |
a59a4d19 GC |
1025 | } |
1026 | EXPORT_SYMBOL(phy_get_eee_err); | |
1027 | ||
1028 | /** | |
1029 | * phy_ethtool_get_eee - get EEE supported and status | |
1030 | * @phydev: target phy_device struct | |
1031 | * @data: ethtool_eee data | |
1032 | * | |
1033 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1034 | * capabilities. | |
1035 | */ | |
1036 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1037 | { | |
1038 | int val; | |
1039 | ||
1040 | /* Get Supported EEE */ | |
1041 | val = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
1042 | MDIO_MMD_PCS, phydev->addr); | |
1043 | if (val < 0) | |
1044 | return val; | |
b32607dd | 1045 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1046 | |
1047 | /* Get advertisement EEE */ | |
1048 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1049 | MDIO_MMD_AN, phydev->addr); | |
1050 | if (val < 0) | |
1051 | return val; | |
b32607dd | 1052 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1053 | |
1054 | /* Get LP advertisement EEE */ | |
1055 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
1056 | MDIO_MMD_AN, phydev->addr); | |
1057 | if (val < 0) | |
1058 | return val; | |
b32607dd | 1059 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1060 | |
1061 | return 0; | |
1062 | } | |
1063 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1064 | ||
1065 | /** | |
1066 | * phy_ethtool_set_eee - set EEE supported and status | |
1067 | * @phydev: target phy_device struct | |
1068 | * @data: ethtool_eee data | |
1069 | * | |
1070 | * Description: it is to program the Advertisement EEE register. | |
1071 | */ | |
1072 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1073 | { | |
553fe92b | 1074 | int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised); |
a59a4d19 | 1075 | |
a59a4d19 GC |
1076 | phy_write_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, MDIO_MMD_AN, |
1077 | phydev->addr, val); | |
1078 | ||
1079 | return 0; | |
1080 | } | |
1081 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1082 | |
1083 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1084 | { | |
1085 | if (phydev->drv->set_wol) | |
1086 | return phydev->drv->set_wol(phydev, wol); | |
1087 | ||
1088 | return -EOPNOTSUPP; | |
1089 | } | |
1090 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1091 | ||
1092 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1093 | { | |
1094 | if (phydev->drv->get_wol) | |
1095 | phydev->drv->get_wol(phydev, wol); | |
1096 | } | |
1097 | EXPORT_SYMBOL(phy_ethtool_get_wol); |