]>
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 AF |
22 | #include <linux/interrupt.h> |
23 | #include <linux/init.h> | |
24 | #include <linux/delay.h> | |
25 | #include <linux/netdevice.h> | |
26 | #include <linux/etherdevice.h> | |
27 | #include <linux/skbuff.h> | |
00db8189 AF |
28 | #include <linux/mm.h> |
29 | #include <linux/module.h> | |
00db8189 AF |
30 | #include <linux/mii.h> |
31 | #include <linux/ethtool.h> | |
32 | #include <linux/phy.h> | |
3c3070d7 MR |
33 | #include <linux/timer.h> |
34 | #include <linux/workqueue.h> | |
a59a4d19 | 35 | #include <linux/mdio.h> |
2f53e904 SS |
36 | #include <linux/io.h> |
37 | #include <linux/uaccess.h> | |
60063497 | 38 | #include <linux/atomic.h> |
2f53e904 | 39 | |
00db8189 | 40 | #include <asm/irq.h> |
00db8189 | 41 | |
b3df0da8 RD |
42 | /** |
43 | * phy_print_status - Convenience function to print out the current phy status | |
44 | * @phydev: the phy_device struct | |
e1393456 AF |
45 | */ |
46 | void phy_print_status(struct phy_device *phydev) | |
47 | { | |
2f53e904 | 48 | if (phydev->link) { |
8d242488 JP |
49 | pr_info("%s - Link is Up - %d/%s\n", |
50 | dev_name(&phydev->dev), | |
51 | phydev->speed, | |
52 | DUPLEX_FULL == phydev->duplex ? "Full" : "Half"); | |
2f53e904 | 53 | } else { |
8d242488 | 54 | pr_info("%s - Link is Down\n", dev_name(&phydev->dev)); |
2f53e904 | 55 | } |
e1393456 AF |
56 | } |
57 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 58 | |
b3df0da8 RD |
59 | /** |
60 | * phy_clear_interrupt - Ack the phy device's interrupt | |
61 | * @phydev: the phy_device struct | |
62 | * | |
63 | * If the @phydev driver has an ack_interrupt function, call it to | |
64 | * ack and clear the phy device's interrupt. | |
65 | * | |
66 | * Returns 0 on success on < 0 on error. | |
67 | */ | |
89ff05ec | 68 | static int phy_clear_interrupt(struct phy_device *phydev) |
00db8189 AF |
69 | { |
70 | int err = 0; | |
71 | ||
72 | if (phydev->drv->ack_interrupt) | |
73 | err = phydev->drv->ack_interrupt(phydev); | |
74 | ||
75 | return err; | |
76 | } | |
77 | ||
b3df0da8 RD |
78 | /** |
79 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
80 | * @phydev: the phy_device struct | |
81 | * @interrupts: interrupt flags to configure for this @phydev | |
82 | * | |
83 | * Returns 0 on success on < 0 on error. | |
84 | */ | |
89ff05ec | 85 | static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
00db8189 AF |
86 | { |
87 | int err = 0; | |
88 | ||
89 | phydev->interrupts = interrupts; | |
90 | if (phydev->drv->config_intr) | |
91 | err = phydev->drv->config_intr(phydev); | |
92 | ||
93 | return err; | |
94 | } | |
95 | ||
96 | ||
b3df0da8 RD |
97 | /** |
98 | * phy_aneg_done - return auto-negotiation status | |
99 | * @phydev: target phy_device struct | |
00db8189 | 100 | * |
b3df0da8 | 101 | * Description: Reads the status register and returns 0 either if |
00db8189 AF |
102 | * auto-negotiation is incomplete, or if there was an error. |
103 | * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. | |
104 | */ | |
105 | static inline int phy_aneg_done(struct phy_device *phydev) | |
106 | { | |
107 | int retval; | |
108 | ||
109 | retval = phy_read(phydev, MII_BMSR); | |
110 | ||
111 | return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); | |
112 | } | |
113 | ||
00db8189 | 114 | /* A structure for mapping a particular speed and duplex |
2f53e904 SS |
115 | * combination to a particular SUPPORTED and ADVERTISED value |
116 | */ | |
00db8189 AF |
117 | struct phy_setting { |
118 | int speed; | |
119 | int duplex; | |
120 | u32 setting; | |
121 | }; | |
122 | ||
123 | /* A mapping of all SUPPORTED settings to speed/duplex */ | |
f71e1309 | 124 | static const struct phy_setting settings[] = { |
00db8189 AF |
125 | { |
126 | .speed = 10000, | |
127 | .duplex = DUPLEX_FULL, | |
128 | .setting = SUPPORTED_10000baseT_Full, | |
129 | }, | |
130 | { | |
131 | .speed = SPEED_1000, | |
132 | .duplex = DUPLEX_FULL, | |
133 | .setting = SUPPORTED_1000baseT_Full, | |
134 | }, | |
135 | { | |
136 | .speed = SPEED_1000, | |
137 | .duplex = DUPLEX_HALF, | |
138 | .setting = SUPPORTED_1000baseT_Half, | |
139 | }, | |
140 | { | |
141 | .speed = SPEED_100, | |
142 | .duplex = DUPLEX_FULL, | |
143 | .setting = SUPPORTED_100baseT_Full, | |
144 | }, | |
145 | { | |
146 | .speed = SPEED_100, | |
147 | .duplex = DUPLEX_HALF, | |
148 | .setting = SUPPORTED_100baseT_Half, | |
149 | }, | |
150 | { | |
151 | .speed = SPEED_10, | |
152 | .duplex = DUPLEX_FULL, | |
153 | .setting = SUPPORTED_10baseT_Full, | |
154 | }, | |
155 | { | |
156 | .speed = SPEED_10, | |
157 | .duplex = DUPLEX_HALF, | |
158 | .setting = SUPPORTED_10baseT_Half, | |
159 | }, | |
160 | }; | |
161 | ||
ff8ac609 | 162 | #define MAX_NUM_SETTINGS ARRAY_SIZE(settings) |
00db8189 | 163 | |
b3df0da8 RD |
164 | /** |
165 | * phy_find_setting - find a PHY settings array entry that matches speed & duplex | |
166 | * @speed: speed to match | |
167 | * @duplex: duplex to match | |
00db8189 | 168 | * |
b3df0da8 | 169 | * Description: Searches the settings array for the setting which |
00db8189 AF |
170 | * matches the desired speed and duplex, and returns the index |
171 | * of that setting. Returns the index of the last setting if | |
172 | * none of the others match. | |
173 | */ | |
174 | static inline int phy_find_setting(int speed, int duplex) | |
175 | { | |
176 | int idx = 0; | |
177 | ||
178 | while (idx < ARRAY_SIZE(settings) && | |
2f53e904 | 179 | (settings[idx].speed != speed || settings[idx].duplex != duplex)) |
00db8189 AF |
180 | idx++; |
181 | ||
182 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
183 | } | |
184 | ||
b3df0da8 RD |
185 | /** |
186 | * phy_find_valid - find a PHY setting that matches the requested features mask | |
187 | * @idx: The first index in settings[] to search | |
188 | * @features: A mask of the valid settings | |
00db8189 | 189 | * |
b3df0da8 | 190 | * Description: Returns the index of the first valid setting less |
00db8189 AF |
191 | * than or equal to the one pointed to by idx, as determined by |
192 | * the mask in features. Returns the index of the last setting | |
193 | * if nothing else matches. | |
194 | */ | |
195 | static inline int phy_find_valid(int idx, u32 features) | |
196 | { | |
197 | while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) | |
198 | idx++; | |
199 | ||
200 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
201 | } | |
202 | ||
b3df0da8 RD |
203 | /** |
204 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
205 | * @phydev: the target phy_device struct | |
00db8189 | 206 | * |
b3df0da8 | 207 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 208 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 209 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 210 | */ |
89ff05ec | 211 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 AF |
212 | { |
213 | u32 features = phydev->supported; | |
214 | int idx; | |
215 | ||
216 | /* Sanitize settings based on PHY capabilities */ | |
217 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 218 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 AF |
219 | |
220 | idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), | |
221 | features); | |
222 | ||
223 | phydev->speed = settings[idx].speed; | |
224 | phydev->duplex = settings[idx].duplex; | |
225 | } | |
00db8189 | 226 | |
b3df0da8 RD |
227 | /** |
228 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
229 | * @phydev: target phy_device struct | |
230 | * @cmd: ethtool_cmd | |
00db8189 AF |
231 | * |
232 | * A few notes about parameter checking: | |
233 | * - We don't set port or transceiver, so we don't care what they | |
234 | * were set to. | |
235 | * - phy_start_aneg() will make sure forced settings are sane, and | |
236 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 237 | * care if ethtool tries to give us bad values. |
00db8189 AF |
238 | */ |
239 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
240 | { | |
25db0338 DD |
241 | u32 speed = ethtool_cmd_speed(cmd); |
242 | ||
00db8189 AF |
243 | if (cmd->phy_address != phydev->addr) |
244 | return -EINVAL; | |
245 | ||
2f53e904 | 246 | /* We make sure that we don't pass unsupported values in to the PHY */ |
00db8189 AF |
247 | cmd->advertising &= phydev->supported; |
248 | ||
249 | /* Verify the settings we care about. */ | |
250 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
251 | return -EINVAL; | |
252 | ||
253 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
254 | return -EINVAL; | |
255 | ||
8e95a202 | 256 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
257 | ((speed != SPEED_1000 && |
258 | speed != SPEED_100 && | |
259 | speed != SPEED_10) || | |
8e95a202 JP |
260 | (cmd->duplex != DUPLEX_HALF && |
261 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
262 | return -EINVAL; |
263 | ||
264 | phydev->autoneg = cmd->autoneg; | |
265 | ||
25db0338 | 266 | phydev->speed = speed; |
00db8189 AF |
267 | |
268 | phydev->advertising = cmd->advertising; | |
269 | ||
270 | if (AUTONEG_ENABLE == cmd->autoneg) | |
271 | phydev->advertising |= ADVERTISED_Autoneg; | |
272 | else | |
273 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
274 | ||
275 | phydev->duplex = cmd->duplex; | |
276 | ||
277 | /* Restart the PHY */ | |
278 | phy_start_aneg(phydev); | |
279 | ||
280 | return 0; | |
281 | } | |
9f6d55d0 | 282 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 AF |
283 | |
284 | int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
285 | { | |
286 | cmd->supported = phydev->supported; | |
287 | ||
288 | cmd->advertising = phydev->advertising; | |
114002bc | 289 | cmd->lp_advertising = phydev->lp_advertising; |
00db8189 | 290 | |
70739497 | 291 | ethtool_cmd_speed_set(cmd, phydev->speed); |
00db8189 AF |
292 | cmd->duplex = phydev->duplex; |
293 | cmd->port = PORT_MII; | |
294 | cmd->phy_address = phydev->addr; | |
4284b6a5 FF |
295 | cmd->transceiver = phy_is_internal(phydev) ? |
296 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
00db8189 AF |
297 | cmd->autoneg = phydev->autoneg; |
298 | ||
299 | return 0; | |
300 | } | |
9f6d55d0 | 301 | EXPORT_SYMBOL(phy_ethtool_gset); |
00db8189 | 302 | |
b3df0da8 RD |
303 | /** |
304 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
305 | * @phydev: the phy_device struct | |
00c7d920 | 306 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
307 | * @cmd: ioctl cmd to execute |
308 | * | |
309 | * Note that this function is currently incompatible with the | |
00db8189 | 310 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 311 | * current state. Use at own risk. |
00db8189 | 312 | */ |
2f53e904 | 313 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 314 | { |
28b04113 | 315 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 | 316 | u16 val = mii_data->val_in; |
87aa9f9c | 317 | int ret = 0; |
00db8189 AF |
318 | |
319 | switch (cmd) { | |
320 | case SIOCGMIIPHY: | |
321 | mii_data->phy_id = phydev->addr; | |
c6d6a511 LB |
322 | /* fall through */ |
323 | ||
00db8189 | 324 | case SIOCGMIIREG: |
af1dc13e PK |
325 | mii_data->val_out = mdiobus_read(phydev->bus, mii_data->phy_id, |
326 | mii_data->reg_num); | |
00db8189 AF |
327 | break; |
328 | ||
329 | case SIOCSMIIREG: | |
00db8189 | 330 | if (mii_data->phy_id == phydev->addr) { |
e109374f | 331 | switch (mii_data->reg_num) { |
00db8189 | 332 | case MII_BMCR: |
2f53e904 | 333 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) |
00db8189 AF |
334 | phydev->autoneg = AUTONEG_DISABLE; |
335 | else | |
336 | phydev->autoneg = AUTONEG_ENABLE; | |
2f53e904 | 337 | if (!phydev->autoneg && (val & BMCR_FULLDPLX)) |
00db8189 AF |
338 | phydev->duplex = DUPLEX_FULL; |
339 | else | |
340 | phydev->duplex = DUPLEX_HALF; | |
2f53e904 | 341 | if (!phydev->autoneg && (val & BMCR_SPEED1000)) |
024a0a3c | 342 | phydev->speed = SPEED_1000; |
2f53e904 SS |
343 | else if (!phydev->autoneg && |
344 | (val & BMCR_SPEED100)) | |
024a0a3c | 345 | phydev->speed = SPEED_100; |
00db8189 AF |
346 | break; |
347 | case MII_ADVERTISE: | |
348 | phydev->advertising = val; | |
349 | break; | |
350 | default: | |
351 | /* do nothing */ | |
352 | break; | |
353 | } | |
354 | } | |
355 | ||
af1dc13e PK |
356 | mdiobus_write(phydev->bus, mii_data->phy_id, |
357 | mii_data->reg_num, val); | |
358 | ||
8e95a202 | 359 | if (mii_data->reg_num == MII_BMCR && |
2613f95f | 360 | val & BMCR_RESET) |
87aa9f9c | 361 | ret = phy_init_hw(phydev); |
00db8189 | 362 | break; |
dda93b48 | 363 | |
c1f19b51 RC |
364 | case SIOCSHWTSTAMP: |
365 | if (phydev->drv->hwtstamp) | |
366 | return phydev->drv->hwtstamp(phydev, ifr); | |
367 | /* fall through */ | |
368 | ||
dda93b48 | 369 | default: |
c6d6a511 | 370 | return -EOPNOTSUPP; |
00db8189 AF |
371 | } |
372 | ||
87aa9f9c | 373 | return ret; |
00db8189 | 374 | } |
680e9fe9 | 375 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 376 | |
b3df0da8 RD |
377 | /** |
378 | * phy_start_aneg - start auto-negotiation for this PHY device | |
379 | * @phydev: the phy_device struct | |
e1393456 | 380 | * |
b3df0da8 RD |
381 | * Description: Sanitizes the settings (if we're not autonegotiating |
382 | * them), and then calls the driver's config_aneg function. | |
383 | * If the PHYCONTROL Layer is operating, we change the state to | |
384 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 AF |
385 | */ |
386 | int phy_start_aneg(struct phy_device *phydev) | |
387 | { | |
388 | int err; | |
389 | ||
35b5f6b1 | 390 | mutex_lock(&phydev->lock); |
e1393456 AF |
391 | |
392 | if (AUTONEG_DISABLE == phydev->autoneg) | |
393 | phy_sanitize_settings(phydev); | |
394 | ||
395 | err = phydev->drv->config_aneg(phydev); | |
396 | ||
e1393456 AF |
397 | if (err < 0) |
398 | goto out_unlock; | |
399 | ||
400 | if (phydev->state != PHY_HALTED) { | |
401 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
402 | phydev->state = PHY_AN; | |
403 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
404 | } else { | |
405 | phydev->state = PHY_FORCING; | |
406 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
407 | } | |
408 | } | |
409 | ||
410 | out_unlock: | |
35b5f6b1 | 411 | mutex_unlock(&phydev->lock); |
e1393456 AF |
412 | return err; |
413 | } | |
414 | EXPORT_SYMBOL(phy_start_aneg); | |
415 | ||
416 | ||
b3df0da8 RD |
417 | /** |
418 | * phy_start_machine - start PHY state machine tracking | |
419 | * @phydev: the phy_device struct | |
420 | * @handler: callback function for state change notifications | |
00db8189 | 421 | * |
b3df0da8 | 422 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
423 | * which tracks whether the PHY is starting up, negotiating, |
424 | * etc. This function starts the timer which tracks the state | |
b3df0da8 RD |
425 | * of the PHY. If you want to be notified when the state changes, |
426 | * pass in the callback @handler, otherwise, pass NULL. If you | |
00db8189 | 427 | * want to maintain your own state machine, do not call this |
b3df0da8 RD |
428 | * function. |
429 | */ | |
00db8189 | 430 | void phy_start_machine(struct phy_device *phydev, |
2f53e904 | 431 | void (*handler)(struct net_device *)) |
00db8189 AF |
432 | { |
433 | phydev->adjust_state = handler; | |
434 | ||
bbb47bde | 435 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
436 | } |
437 | ||
b3df0da8 RD |
438 | /** |
439 | * phy_stop_machine - stop the PHY state machine tracking | |
440 | * @phydev: target phy_device struct | |
00db8189 | 441 | * |
b3df0da8 | 442 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 443 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
444 | * phy_detach. |
445 | */ | |
446 | void phy_stop_machine(struct phy_device *phydev) | |
447 | { | |
a390d1f3 | 448 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 449 | |
35b5f6b1 | 450 | mutex_lock(&phydev->lock); |
00db8189 AF |
451 | if (phydev->state > PHY_UP) |
452 | phydev->state = PHY_UP; | |
35b5f6b1 | 453 | mutex_unlock(&phydev->lock); |
00db8189 | 454 | |
00db8189 AF |
455 | phydev->adjust_state = NULL; |
456 | } | |
457 | ||
b3df0da8 RD |
458 | /** |
459 | * phy_error - enter HALTED state for this PHY device | |
460 | * @phydev: target phy_device struct | |
00db8189 AF |
461 | * |
462 | * Moves the PHY to the HALTED state in response to a read | |
463 | * or write error, and tells the controller the link is down. | |
464 | * Must not be called from interrupt context, or while the | |
465 | * phydev->lock is held. | |
466 | */ | |
9b9a8bfc | 467 | static void phy_error(struct phy_device *phydev) |
00db8189 | 468 | { |
35b5f6b1 | 469 | mutex_lock(&phydev->lock); |
00db8189 | 470 | phydev->state = PHY_HALTED; |
35b5f6b1 | 471 | mutex_unlock(&phydev->lock); |
00db8189 AF |
472 | } |
473 | ||
b3df0da8 RD |
474 | /** |
475 | * phy_interrupt - PHY interrupt handler | |
476 | * @irq: interrupt line | |
477 | * @phy_dat: phy_device pointer | |
e1393456 | 478 | * |
b3df0da8 | 479 | * Description: When a PHY interrupt occurs, the handler disables |
e1393456 AF |
480 | * interrupts, and schedules a work task to clear the interrupt. |
481 | */ | |
7d12e780 | 482 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
483 | { |
484 | struct phy_device *phydev = phy_dat; | |
485 | ||
3c3070d7 MR |
486 | if (PHY_HALTED == phydev->state) |
487 | return IRQ_NONE; /* It can't be ours. */ | |
488 | ||
e1393456 AF |
489 | /* The MDIO bus is not allowed to be written in interrupt |
490 | * context, so we need to disable the irq here. A work | |
491 | * queue will write the PHY to disable and clear the | |
2f53e904 SS |
492 | * interrupt, and then reenable the irq line. |
493 | */ | |
e1393456 | 494 | disable_irq_nosync(irq); |
0ac49527 | 495 | atomic_inc(&phydev->irq_disable); |
e1393456 | 496 | |
bbb47bde | 497 | queue_work(system_power_efficient_wq, &phydev->phy_queue); |
e1393456 AF |
498 | |
499 | return IRQ_HANDLED; | |
500 | } | |
501 | ||
b3df0da8 RD |
502 | /** |
503 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
504 | * @phydev: target phy_device struct | |
505 | */ | |
89ff05ec | 506 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 AF |
507 | { |
508 | int err; | |
509 | ||
e1393456 | 510 | err = phy_clear_interrupt(phydev); |
00db8189 | 511 | |
e1393456 AF |
512 | if (err < 0) |
513 | return err; | |
00db8189 | 514 | |
e1393456 | 515 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 AF |
516 | |
517 | return err; | |
518 | } | |
00db8189 | 519 | |
b3df0da8 RD |
520 | /** |
521 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
522 | * @phydev: target phy_device struct | |
523 | */ | |
89ff05ec | 524 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
525 | { |
526 | int err; | |
527 | ||
528 | /* Disable PHY interrupts */ | |
529 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
530 | ||
531 | if (err) | |
532 | goto phy_err; | |
533 | ||
534 | /* Clear the interrupt */ | |
535 | err = phy_clear_interrupt(phydev); | |
536 | ||
537 | if (err) | |
538 | goto phy_err; | |
539 | ||
540 | return 0; | |
541 | ||
542 | phy_err: | |
543 | phy_error(phydev); | |
544 | ||
545 | return err; | |
546 | } | |
e1393456 | 547 | |
b3df0da8 RD |
548 | /** |
549 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
550 | * @phydev: target phy_device struct | |
e1393456 | 551 | * |
b3df0da8 RD |
552 | * Description: Request the interrupt for the given PHY. |
553 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 554 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 555 | * This should only be called with a valid IRQ number. |
b3df0da8 | 556 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
557 | */ |
558 | int phy_start_interrupts(struct phy_device *phydev) | |
559 | { | |
560 | int err = 0; | |
561 | ||
0ac49527 | 562 | atomic_set(&phydev->irq_disable, 0); |
e1393456 | 563 | if (request_irq(phydev->irq, phy_interrupt, |
1fb9df5d | 564 | IRQF_SHARED, |
e1393456 AF |
565 | "phy_interrupt", |
566 | phydev) < 0) { | |
8d242488 JP |
567 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
568 | phydev->bus->name, phydev->irq); | |
e1393456 AF |
569 | phydev->irq = PHY_POLL; |
570 | return 0; | |
571 | } | |
572 | ||
573 | err = phy_enable_interrupts(phydev); | |
574 | ||
575 | return err; | |
576 | } | |
577 | EXPORT_SYMBOL(phy_start_interrupts); | |
578 | ||
b3df0da8 RD |
579 | /** |
580 | * phy_stop_interrupts - disable interrupts from a PHY device | |
581 | * @phydev: target phy_device struct | |
582 | */ | |
e1393456 AF |
583 | int phy_stop_interrupts(struct phy_device *phydev) |
584 | { | |
585 | int err; | |
586 | ||
587 | err = phy_disable_interrupts(phydev); | |
588 | ||
589 | if (err) | |
590 | phy_error(phydev); | |
591 | ||
0ac49527 MR |
592 | free_irq(phydev->irq, phydev); |
593 | ||
2f53e904 | 594 | /* Cannot call flush_scheduled_work() here as desired because |
0ac49527 MR |
595 | * of rtnl_lock(), but we do not really care about what would |
596 | * be done, except from enable_irq(), so cancel any work | |
597 | * possibly pending and take care of the matter below. | |
3c3070d7 | 598 | */ |
28e53bdd | 599 | cancel_work_sync(&phydev->phy_queue); |
2f53e904 | 600 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
601 | * been left unbalanced from phy_interrupt() and enable_irq() |
602 | * has to be called so that other devices on the line work. | |
603 | */ | |
604 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
605 | enable_irq(phydev->irq); | |
e1393456 AF |
606 | |
607 | return err; | |
608 | } | |
609 | EXPORT_SYMBOL(phy_stop_interrupts); | |
610 | ||
611 | ||
b3df0da8 RD |
612 | /** |
613 | * phy_change - Scheduled by the phy_interrupt/timer to handle PHY changes | |
614 | * @work: work_struct that describes the work to be done | |
615 | */ | |
5ea94e76 | 616 | void phy_change(struct work_struct *work) |
e1393456 AF |
617 | { |
618 | int err; | |
c4028958 DH |
619 | struct phy_device *phydev = |
620 | container_of(work, struct phy_device, phy_queue); | |
e1393456 | 621 | |
a8729eb3 AG |
622 | if (phydev->drv->did_interrupt && |
623 | !phydev->drv->did_interrupt(phydev)) | |
624 | goto ignore; | |
625 | ||
e1393456 AF |
626 | err = phy_disable_interrupts(phydev); |
627 | ||
628 | if (err) | |
629 | goto phy_err; | |
630 | ||
35b5f6b1 | 631 | mutex_lock(&phydev->lock); |
e1393456 AF |
632 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
633 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 634 | mutex_unlock(&phydev->lock); |
e1393456 | 635 | |
0ac49527 | 636 | atomic_dec(&phydev->irq_disable); |
e1393456 AF |
637 | enable_irq(phydev->irq); |
638 | ||
639 | /* Reenable interrupts */ | |
3c3070d7 MR |
640 | if (PHY_HALTED != phydev->state) |
641 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); | |
e1393456 AF |
642 | |
643 | if (err) | |
644 | goto irq_enable_err; | |
645 | ||
a390d1f3 MS |
646 | /* reschedule state queue work to run as soon as possible */ |
647 | cancel_delayed_work_sync(&phydev->state_queue); | |
bbb47bde | 648 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); |
0acb2839 | 649 | |
e1393456 AF |
650 | return; |
651 | ||
a8729eb3 AG |
652 | ignore: |
653 | atomic_dec(&phydev->irq_disable); | |
654 | enable_irq(phydev->irq); | |
655 | return; | |
656 | ||
e1393456 AF |
657 | irq_enable_err: |
658 | disable_irq(phydev->irq); | |
0ac49527 | 659 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
660 | phy_err: |
661 | phy_error(phydev); | |
662 | } | |
663 | ||
b3df0da8 RD |
664 | /** |
665 | * phy_stop - Bring down the PHY link, and stop checking the status | |
666 | * @phydev: target phy_device struct | |
667 | */ | |
e1393456 AF |
668 | void phy_stop(struct phy_device *phydev) |
669 | { | |
35b5f6b1 | 670 | mutex_lock(&phydev->lock); |
e1393456 AF |
671 | |
672 | if (PHY_HALTED == phydev->state) | |
673 | goto out_unlock; | |
674 | ||
2c7b4921 | 675 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
676 | /* Disable PHY Interrupts */ |
677 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 678 | |
3c3070d7 MR |
679 | /* Clear any pending interrupts */ |
680 | phy_clear_interrupt(phydev); | |
681 | } | |
e1393456 | 682 | |
6daf6531 MR |
683 | phydev->state = PHY_HALTED; |
684 | ||
e1393456 | 685 | out_unlock: |
35b5f6b1 | 686 | mutex_unlock(&phydev->lock); |
3c3070d7 | 687 | |
2f53e904 | 688 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
689 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
690 | * will not reenable interrupts. | |
691 | */ | |
e1393456 | 692 | } |
2f53e904 | 693 | EXPORT_SYMBOL(phy_stop); |
e1393456 AF |
694 | |
695 | ||
b3df0da8 RD |
696 | /** |
697 | * phy_start - start or restart a PHY device | |
698 | * @phydev: target phy_device struct | |
e1393456 | 699 | * |
b3df0da8 | 700 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
701 | * handle PHY-related work. Used during startup to start the |
702 | * PHY, and after a call to phy_stop() to resume operation. | |
703 | * Also used to indicate the MDIO bus has cleared an error | |
704 | * condition. | |
705 | */ | |
706 | void phy_start(struct phy_device *phydev) | |
707 | { | |
35b5f6b1 | 708 | mutex_lock(&phydev->lock); |
e1393456 AF |
709 | |
710 | switch (phydev->state) { | |
e109374f FF |
711 | case PHY_STARTING: |
712 | phydev->state = PHY_PENDING; | |
713 | break; | |
714 | case PHY_READY: | |
715 | phydev->state = PHY_UP; | |
716 | break; | |
717 | case PHY_HALTED: | |
718 | phydev->state = PHY_RESUMING; | |
719 | default: | |
720 | break; | |
e1393456 | 721 | } |
35b5f6b1 | 722 | mutex_unlock(&phydev->lock); |
e1393456 | 723 | } |
e1393456 | 724 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 725 | |
35b5f6b1 NC |
726 | /** |
727 | * phy_state_machine - Handle the state machine | |
728 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 729 | */ |
4f9c85a1 | 730 | void phy_state_machine(struct work_struct *work) |
00db8189 | 731 | { |
bf6aede7 | 732 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 733 | struct phy_device *phydev = |
a390d1f3 | 734 | container_of(dwork, struct phy_device, state_queue); |
be9dad1f | 735 | int needs_aneg = 0, do_suspend = 0; |
00db8189 AF |
736 | int err = 0; |
737 | ||
35b5f6b1 | 738 | mutex_lock(&phydev->lock); |
00db8189 AF |
739 | |
740 | if (phydev->adjust_state) | |
741 | phydev->adjust_state(phydev->attached_dev); | |
742 | ||
e109374f FF |
743 | switch (phydev->state) { |
744 | case PHY_DOWN: | |
745 | case PHY_STARTING: | |
746 | case PHY_READY: | |
747 | case PHY_PENDING: | |
748 | break; | |
749 | case PHY_UP: | |
750 | needs_aneg = 1; | |
00db8189 | 751 | |
e109374f FF |
752 | phydev->link_timeout = PHY_AN_TIMEOUT; |
753 | ||
754 | break; | |
755 | case PHY_AN: | |
756 | err = phy_read_status(phydev); | |
00db8189 | 757 | |
e109374f | 758 | if (err < 0) |
00db8189 | 759 | break; |
6b655529 | 760 | |
2f53e904 | 761 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
762 | if (!phydev->link) { |
763 | phydev->state = PHY_NOLINK; | |
764 | netif_carrier_off(phydev->attached_dev); | |
765 | phydev->adjust_link(phydev->attached_dev); | |
766 | break; | |
767 | } | |
6b655529 | 768 | |
2f53e904 | 769 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
770 | err = phy_aneg_done(phydev); |
771 | if (err < 0) | |
772 | break; | |
6b655529 | 773 | |
e109374f FF |
774 | /* If AN is done, we're running */ |
775 | if (err > 0) { | |
776 | phydev->state = PHY_RUNNING; | |
777 | netif_carrier_on(phydev->attached_dev); | |
778 | phydev->adjust_link(phydev->attached_dev); | |
00db8189 | 779 | |
e109374f FF |
780 | } else if (0 == phydev->link_timeout--) { |
781 | needs_aneg = 1; | |
2f53e904 | 782 | /* If we have the magic_aneg bit, we try again */ |
e109374f FF |
783 | if (phydev->drv->flags & PHY_HAS_MAGICANEG) |
784 | break; | |
785 | } | |
786 | break; | |
787 | case PHY_NOLINK: | |
788 | err = phy_read_status(phydev); | |
00db8189 | 789 | |
e109374f | 790 | if (err) |
00db8189 | 791 | break; |
00db8189 | 792 | |
e109374f FF |
793 | if (phydev->link) { |
794 | phydev->state = PHY_RUNNING; | |
795 | netif_carrier_on(phydev->attached_dev); | |
796 | phydev->adjust_link(phydev->attached_dev); | |
797 | } | |
798 | break; | |
799 | case PHY_FORCING: | |
800 | err = genphy_update_link(phydev); | |
00db8189 | 801 | |
e109374f | 802 | if (err) |
00db8189 | 803 | break; |
00db8189 | 804 | |
e109374f FF |
805 | if (phydev->link) { |
806 | phydev->state = PHY_RUNNING; | |
807 | netif_carrier_on(phydev->attached_dev); | |
808 | } else { | |
809 | if (0 == phydev->link_timeout--) | |
810 | needs_aneg = 1; | |
811 | } | |
00db8189 | 812 | |
e109374f FF |
813 | phydev->adjust_link(phydev->attached_dev); |
814 | break; | |
815 | case PHY_RUNNING: | |
816 | /* Only register a CHANGE if we are | |
817 | * polling or ignoring interrupts | |
818 | */ | |
819 | if (!phy_interrupt_is_valid(phydev)) | |
820 | phydev->state = PHY_CHANGELINK; | |
821 | break; | |
822 | case PHY_CHANGELINK: | |
823 | err = phy_read_status(phydev); | |
00db8189 | 824 | |
e109374f | 825 | if (err) |
00db8189 | 826 | break; |
00db8189 | 827 | |
e109374f FF |
828 | if (phydev->link) { |
829 | phydev->state = PHY_RUNNING; | |
830 | netif_carrier_on(phydev->attached_dev); | |
831 | } else { | |
832 | phydev->state = PHY_NOLINK; | |
833 | netif_carrier_off(phydev->attached_dev); | |
834 | } | |
00db8189 | 835 | |
e109374f | 836 | phydev->adjust_link(phydev->attached_dev); |
00db8189 | 837 | |
e109374f FF |
838 | if (phy_interrupt_is_valid(phydev)) |
839 | err = phy_config_interrupt(phydev, | |
2f53e904 | 840 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
841 | break; |
842 | case PHY_HALTED: | |
843 | if (phydev->link) { | |
844 | phydev->link = 0; | |
845 | netif_carrier_off(phydev->attached_dev); | |
00db8189 | 846 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
847 | do_suspend = 1; |
848 | } | |
849 | break; | |
850 | case PHY_RESUMING: | |
00db8189 | 851 | |
e109374f | 852 | err = phy_clear_interrupt(phydev); |
00db8189 | 853 | |
e109374f FF |
854 | if (err) |
855 | break; | |
00db8189 | 856 | |
2f53e904 | 857 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 858 | |
e109374f FF |
859 | if (err) |
860 | break; | |
00db8189 | 861 | |
e109374f FF |
862 | if (AUTONEG_ENABLE == phydev->autoneg) { |
863 | err = phy_aneg_done(phydev); | |
864 | if (err < 0) | |
00db8189 AF |
865 | break; |
866 | ||
e109374f | 867 | /* err > 0 if AN is done. |
2f53e904 SS |
868 | * Otherwise, it's 0, and we're still waiting for AN |
869 | */ | |
e109374f | 870 | if (err > 0) { |
42caa074 WF |
871 | err = phy_read_status(phydev); |
872 | if (err) | |
873 | break; | |
874 | ||
875 | if (phydev->link) { | |
876 | phydev->state = PHY_RUNNING; | |
877 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 878 | } else { |
42caa074 | 879 | phydev->state = PHY_NOLINK; |
2f53e904 | 880 | } |
42caa074 | 881 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
882 | } else { |
883 | phydev->state = PHY_AN; | |
884 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 885 | } |
e109374f FF |
886 | } else { |
887 | err = phy_read_status(phydev); | |
888 | if (err) | |
889 | break; | |
890 | ||
891 | if (phydev->link) { | |
892 | phydev->state = PHY_RUNNING; | |
893 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 894 | } else { |
e109374f | 895 | phydev->state = PHY_NOLINK; |
2f53e904 | 896 | } |
e109374f FF |
897 | phydev->adjust_link(phydev->attached_dev); |
898 | } | |
899 | break; | |
00db8189 AF |
900 | } |
901 | ||
35b5f6b1 | 902 | mutex_unlock(&phydev->lock); |
00db8189 AF |
903 | |
904 | if (needs_aneg) | |
905 | err = phy_start_aneg(phydev); | |
906 | ||
be9dad1f SH |
907 | if (do_suspend) |
908 | phy_suspend(phydev); | |
909 | ||
00db8189 AF |
910 | if (err < 0) |
911 | phy_error(phydev); | |
912 | ||
bbb47bde | 913 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, |
2f53e904 | 914 | PHY_STATE_TIME * HZ); |
35b5f6b1 | 915 | } |
a59a4d19 | 916 | |
5ea94e76 FF |
917 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
918 | { | |
919 | cancel_work_sync(&phydev->phy_queue); | |
920 | phydev->link = new_link; | |
921 | schedule_work(&phydev->phy_queue); | |
922 | } | |
923 | EXPORT_SYMBOL(phy_mac_interrupt); | |
924 | ||
a59a4d19 GC |
925 | static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad, |
926 | int addr) | |
927 | { | |
928 | /* Write the desired MMD Devad */ | |
929 | bus->write(bus, addr, MII_MMD_CTRL, devad); | |
930 | ||
931 | /* Write the desired MMD register address */ | |
932 | bus->write(bus, addr, MII_MMD_DATA, prtad); | |
933 | ||
934 | /* Select the Function : DATA with no post increment */ | |
935 | bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
936 | } | |
937 | ||
938 | /** | |
939 | * phy_read_mmd_indirect - reads data from the MMD registers | |
940 | * @bus: the target MII bus | |
941 | * @prtad: MMD Address | |
942 | * @devad: MMD DEVAD | |
943 | * @addr: PHY address on the MII bus | |
944 | * | |
945 | * Description: it reads data from the MMD registers (clause 22 to access to | |
946 | * clause 45) of the specified phy address. | |
947 | * To read these register we have: | |
948 | * 1) Write reg 13 // DEVAD | |
949 | * 2) Write reg 14 // MMD Address | |
950 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
951 | * 3) Read reg 14 // Read MMD data | |
952 | */ | |
953 | static int phy_read_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
954 | int addr) | |
955 | { | |
956 | u32 ret; | |
957 | ||
958 | mmd_phy_indirect(bus, prtad, devad, addr); | |
959 | ||
960 | /* Read the content of the MMD's selected register */ | |
961 | ret = bus->read(bus, addr, MII_MMD_DATA); | |
962 | ||
963 | return ret; | |
964 | } | |
965 | ||
966 | /** | |
967 | * phy_write_mmd_indirect - writes data to the MMD registers | |
968 | * @bus: the target MII bus | |
969 | * @prtad: MMD Address | |
970 | * @devad: MMD DEVAD | |
971 | * @addr: PHY address on the MII bus | |
972 | * @data: data to write in the MMD register | |
973 | * | |
974 | * Description: Write data from the MMD registers of the specified | |
975 | * phy address. | |
976 | * To write these register we have: | |
977 | * 1) Write reg 13 // DEVAD | |
978 | * 2) Write reg 14 // MMD Address | |
979 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
980 | * 3) Write reg 14 // Write MMD data | |
981 | */ | |
982 | static void phy_write_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
983 | int addr, u32 data) | |
984 | { | |
985 | mmd_phy_indirect(bus, prtad, devad, addr); | |
986 | ||
987 | /* Write the data into MMD's selected register */ | |
988 | bus->write(bus, addr, MII_MMD_DATA, data); | |
989 | } | |
990 | ||
a59a4d19 GC |
991 | /** |
992 | * phy_init_eee - init and check the EEE feature | |
993 | * @phydev: target phy_device struct | |
994 | * @clk_stop_enable: PHY may stop the clock during LPI | |
995 | * | |
996 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
997 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
998 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
999 | * bit if required. | |
1000 | */ | |
1001 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
1002 | { | |
1003 | int ret = -EPROTONOSUPPORT; | |
1004 | ||
1005 | /* According to 802.3az,the EEE is supported only in full duplex-mode. | |
1006 | * Also EEE feature is active when core is operating with MII, GMII | |
1007 | * or RGMII. | |
1008 | */ | |
1009 | if ((phydev->duplex == DUPLEX_FULL) && | |
1010 | ((phydev->interface == PHY_INTERFACE_MODE_MII) || | |
1011 | (phydev->interface == PHY_INTERFACE_MODE_GMII) || | |
1012 | (phydev->interface == PHY_INTERFACE_MODE_RGMII))) { | |
1013 | int eee_lp, eee_cap, eee_adv; | |
1014 | u32 lp, cap, adv; | |
1015 | int idx, status; | |
1016 | ||
1017 | /* Read phy status to properly get the right settings */ | |
1018 | status = phy_read_status(phydev); | |
1019 | if (status) | |
1020 | return status; | |
1021 | ||
1022 | /* First check if the EEE ability is supported */ | |
1023 | eee_cap = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
1024 | MDIO_MMD_PCS, phydev->addr); | |
1025 | if (eee_cap < 0) | |
1026 | return eee_cap; | |
1027 | ||
b32607dd | 1028 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 GC |
1029 | if (!cap) |
1030 | goto eee_exit; | |
1031 | ||
1032 | /* Check which link settings negotiated and verify it in | |
1033 | * the EEE advertising registers. | |
1034 | */ | |
1035 | eee_lp = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
1036 | MDIO_MMD_AN, phydev->addr); | |
1037 | if (eee_lp < 0) | |
1038 | return eee_lp; | |
1039 | ||
1040 | eee_adv = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1041 | MDIO_MMD_AN, phydev->addr); | |
1042 | if (eee_adv < 0) | |
1043 | return eee_adv; | |
1044 | ||
b32607dd AB |
1045 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
1046 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
a59a4d19 | 1047 | idx = phy_find_setting(phydev->speed, phydev->duplex); |
9a9c56cb | 1048 | if (!(lp & adv & settings[idx].setting)) |
a59a4d19 GC |
1049 | goto eee_exit; |
1050 | ||
1051 | if (clk_stop_enable) { | |
1052 | /* Configure the PHY to stop receiving xMII | |
1053 | * clock while it is signaling LPI. | |
1054 | */ | |
1055 | int val = phy_read_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1056 | MDIO_MMD_PCS, | |
1057 | phydev->addr); | |
1058 | if (val < 0) | |
1059 | return val; | |
1060 | ||
1061 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
1062 | phy_write_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1063 | MDIO_MMD_PCS, phydev->addr, val); | |
1064 | } | |
1065 | ||
1066 | ret = 0; /* EEE supported */ | |
1067 | } | |
1068 | ||
1069 | eee_exit: | |
1070 | return ret; | |
1071 | } | |
1072 | EXPORT_SYMBOL(phy_init_eee); | |
1073 | ||
1074 | /** | |
1075 | * phy_get_eee_err - report the EEE wake error count | |
1076 | * @phydev: target phy_device struct | |
1077 | * | |
1078 | * Description: it is to report the number of time where the PHY | |
1079 | * failed to complete its normal wake sequence. | |
1080 | */ | |
1081 | int phy_get_eee_err(struct phy_device *phydev) | |
1082 | { | |
1083 | return phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_WK_ERR, | |
1084 | MDIO_MMD_PCS, phydev->addr); | |
a59a4d19 GC |
1085 | } |
1086 | EXPORT_SYMBOL(phy_get_eee_err); | |
1087 | ||
1088 | /** | |
1089 | * phy_ethtool_get_eee - get EEE supported and status | |
1090 | * @phydev: target phy_device struct | |
1091 | * @data: ethtool_eee data | |
1092 | * | |
1093 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1094 | * capabilities. | |
1095 | */ | |
1096 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1097 | { | |
1098 | int val; | |
1099 | ||
1100 | /* Get Supported EEE */ | |
1101 | val = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
1102 | MDIO_MMD_PCS, phydev->addr); | |
1103 | if (val < 0) | |
1104 | return val; | |
b32607dd | 1105 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1106 | |
1107 | /* Get advertisement EEE */ | |
1108 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1109 | MDIO_MMD_AN, phydev->addr); | |
1110 | if (val < 0) | |
1111 | return val; | |
b32607dd | 1112 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1113 | |
1114 | /* Get LP advertisement EEE */ | |
1115 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
1116 | MDIO_MMD_AN, phydev->addr); | |
1117 | if (val < 0) | |
1118 | return val; | |
b32607dd | 1119 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1120 | |
1121 | return 0; | |
1122 | } | |
1123 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1124 | ||
1125 | /** | |
1126 | * phy_ethtool_set_eee - set EEE supported and status | |
1127 | * @phydev: target phy_device struct | |
1128 | * @data: ethtool_eee data | |
1129 | * | |
1130 | * Description: it is to program the Advertisement EEE register. | |
1131 | */ | |
1132 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1133 | { | |
1134 | int val; | |
1135 | ||
b32607dd | 1136 | val = ethtool_adv_to_mmd_eee_adv_t(data->advertised); |
a59a4d19 GC |
1137 | phy_write_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, MDIO_MMD_AN, |
1138 | phydev->addr, val); | |
1139 | ||
1140 | return 0; | |
1141 | } | |
1142 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1143 | |
1144 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1145 | { | |
1146 | if (phydev->drv->set_wol) | |
1147 | return phydev->drv->set_wol(phydev, wol); | |
1148 | ||
1149 | return -EOPNOTSUPP; | |
1150 | } | |
1151 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1152 | ||
1153 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1154 | { | |
1155 | if (phydev->drv->get_wol) | |
1156 | phydev->drv->get_wol(phydev, wol); | |
1157 | } | |
1158 | EXPORT_SYMBOL(phy_ethtool_get_wol); |