Commit | Line | Data |
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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) { |
df40cc88 FF |
48 | netdev_info(phydev->attached_dev, |
49 | "Link is Up - %d/%s - flow control %s\n", | |
8d242488 | 50 | phydev->speed, |
df40cc88 FF |
51 | DUPLEX_FULL == phydev->duplex ? "Full" : "Half", |
52 | phydev->pause ? "rx/tx" : "off"); | |
2f53e904 | 53 | } else { |
43b6329f | 54 | netdev_info(phydev->attached_dev, "Link is Down\n"); |
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 | 69 | { |
00db8189 | 70 | if (phydev->drv->ack_interrupt) |
e62a768f | 71 | return phydev->drv->ack_interrupt(phydev); |
00db8189 | 72 | |
e62a768f | 73 | return 0; |
00db8189 AF |
74 | } |
75 | ||
b3df0da8 RD |
76 | /** |
77 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
78 | * @phydev: the phy_device struct | |
79 | * @interrupts: interrupt flags to configure for this @phydev | |
80 | * | |
81 | * Returns 0 on success on < 0 on error. | |
82 | */ | |
89ff05ec | 83 | static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
00db8189 | 84 | { |
00db8189 AF |
85 | phydev->interrupts = interrupts; |
86 | if (phydev->drv->config_intr) | |
e62a768f | 87 | return phydev->drv->config_intr(phydev); |
00db8189 | 88 | |
e62a768f | 89 | return 0; |
00db8189 AF |
90 | } |
91 | ||
92 | ||
b3df0da8 RD |
93 | /** |
94 | * phy_aneg_done - return auto-negotiation status | |
95 | * @phydev: target phy_device struct | |
00db8189 | 96 | * |
b3df0da8 | 97 | * Description: Reads the status register and returns 0 either if |
00db8189 AF |
98 | * auto-negotiation is incomplete, or if there was an error. |
99 | * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. | |
100 | */ | |
101 | static inline int phy_aneg_done(struct phy_device *phydev) | |
102 | { | |
553fe92b | 103 | int retval = phy_read(phydev, MII_BMSR); |
00db8189 AF |
104 | |
105 | return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); | |
106 | } | |
107 | ||
00db8189 | 108 | /* A structure for mapping a particular speed and duplex |
2f53e904 SS |
109 | * combination to a particular SUPPORTED and ADVERTISED value |
110 | */ | |
00db8189 AF |
111 | struct phy_setting { |
112 | int speed; | |
113 | int duplex; | |
114 | u32 setting; | |
115 | }; | |
116 | ||
117 | /* A mapping of all SUPPORTED settings to speed/duplex */ | |
f71e1309 | 118 | static const struct phy_setting settings[] = { |
00db8189 AF |
119 | { |
120 | .speed = 10000, | |
121 | .duplex = DUPLEX_FULL, | |
122 | .setting = SUPPORTED_10000baseT_Full, | |
123 | }, | |
124 | { | |
125 | .speed = SPEED_1000, | |
126 | .duplex = DUPLEX_FULL, | |
127 | .setting = SUPPORTED_1000baseT_Full, | |
128 | }, | |
129 | { | |
130 | .speed = SPEED_1000, | |
131 | .duplex = DUPLEX_HALF, | |
132 | .setting = SUPPORTED_1000baseT_Half, | |
133 | }, | |
134 | { | |
135 | .speed = SPEED_100, | |
136 | .duplex = DUPLEX_FULL, | |
137 | .setting = SUPPORTED_100baseT_Full, | |
138 | }, | |
139 | { | |
140 | .speed = SPEED_100, | |
141 | .duplex = DUPLEX_HALF, | |
142 | .setting = SUPPORTED_100baseT_Half, | |
143 | }, | |
144 | { | |
145 | .speed = SPEED_10, | |
146 | .duplex = DUPLEX_FULL, | |
147 | .setting = SUPPORTED_10baseT_Full, | |
148 | }, | |
149 | { | |
150 | .speed = SPEED_10, | |
151 | .duplex = DUPLEX_HALF, | |
152 | .setting = SUPPORTED_10baseT_Half, | |
153 | }, | |
154 | }; | |
155 | ||
ff8ac609 | 156 | #define MAX_NUM_SETTINGS ARRAY_SIZE(settings) |
00db8189 | 157 | |
b3df0da8 RD |
158 | /** |
159 | * phy_find_setting - find a PHY settings array entry that matches speed & duplex | |
160 | * @speed: speed to match | |
161 | * @duplex: duplex to match | |
00db8189 | 162 | * |
b3df0da8 | 163 | * Description: Searches the settings array for the setting which |
00db8189 AF |
164 | * matches the desired speed and duplex, and returns the index |
165 | * of that setting. Returns the index of the last setting if | |
166 | * none of the others match. | |
167 | */ | |
168 | static inline int phy_find_setting(int speed, int duplex) | |
169 | { | |
170 | int idx = 0; | |
171 | ||
172 | while (idx < ARRAY_SIZE(settings) && | |
2f53e904 | 173 | (settings[idx].speed != speed || settings[idx].duplex != duplex)) |
00db8189 AF |
174 | idx++; |
175 | ||
176 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
177 | } | |
178 | ||
b3df0da8 RD |
179 | /** |
180 | * phy_find_valid - find a PHY setting that matches the requested features mask | |
181 | * @idx: The first index in settings[] to search | |
182 | * @features: A mask of the valid settings | |
00db8189 | 183 | * |
b3df0da8 | 184 | * Description: Returns the index of the first valid setting less |
00db8189 AF |
185 | * than or equal to the one pointed to by idx, as determined by |
186 | * the mask in features. Returns the index of the last setting | |
187 | * if nothing else matches. | |
188 | */ | |
189 | static inline int phy_find_valid(int idx, u32 features) | |
190 | { | |
191 | while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) | |
192 | idx++; | |
193 | ||
194 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
195 | } | |
196 | ||
b3df0da8 RD |
197 | /** |
198 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
199 | * @phydev: the target phy_device struct | |
00db8189 | 200 | * |
b3df0da8 | 201 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 202 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 203 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 204 | */ |
89ff05ec | 205 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 AF |
206 | { |
207 | u32 features = phydev->supported; | |
208 | int idx; | |
209 | ||
210 | /* Sanitize settings based on PHY capabilities */ | |
211 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 212 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 AF |
213 | |
214 | idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), | |
215 | features); | |
216 | ||
217 | phydev->speed = settings[idx].speed; | |
218 | phydev->duplex = settings[idx].duplex; | |
219 | } | |
00db8189 | 220 | |
b3df0da8 RD |
221 | /** |
222 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
223 | * @phydev: target phy_device struct | |
224 | * @cmd: ethtool_cmd | |
00db8189 AF |
225 | * |
226 | * A few notes about parameter checking: | |
227 | * - We don't set port or transceiver, so we don't care what they | |
228 | * were set to. | |
229 | * - phy_start_aneg() will make sure forced settings are sane, and | |
230 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 231 | * care if ethtool tries to give us bad values. |
00db8189 AF |
232 | */ |
233 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
234 | { | |
25db0338 DD |
235 | u32 speed = ethtool_cmd_speed(cmd); |
236 | ||
00db8189 AF |
237 | if (cmd->phy_address != phydev->addr) |
238 | return -EINVAL; | |
239 | ||
2f53e904 | 240 | /* We make sure that we don't pass unsupported values in to the PHY */ |
00db8189 AF |
241 | cmd->advertising &= phydev->supported; |
242 | ||
243 | /* Verify the settings we care about. */ | |
244 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
245 | return -EINVAL; | |
246 | ||
247 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
248 | return -EINVAL; | |
249 | ||
8e95a202 | 250 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
251 | ((speed != SPEED_1000 && |
252 | speed != SPEED_100 && | |
253 | speed != SPEED_10) || | |
8e95a202 JP |
254 | (cmd->duplex != DUPLEX_HALF && |
255 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
256 | return -EINVAL; |
257 | ||
258 | phydev->autoneg = cmd->autoneg; | |
259 | ||
25db0338 | 260 | phydev->speed = speed; |
00db8189 AF |
261 | |
262 | phydev->advertising = cmd->advertising; | |
263 | ||
264 | if (AUTONEG_ENABLE == cmd->autoneg) | |
265 | phydev->advertising |= ADVERTISED_Autoneg; | |
266 | else | |
267 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
268 | ||
269 | phydev->duplex = cmd->duplex; | |
270 | ||
271 | /* Restart the PHY */ | |
272 | phy_start_aneg(phydev); | |
273 | ||
274 | return 0; | |
275 | } | |
9f6d55d0 | 276 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 AF |
277 | |
278 | int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
279 | { | |
280 | cmd->supported = phydev->supported; | |
281 | ||
282 | cmd->advertising = phydev->advertising; | |
114002bc | 283 | cmd->lp_advertising = phydev->lp_advertising; |
00db8189 | 284 | |
70739497 | 285 | ethtool_cmd_speed_set(cmd, phydev->speed); |
00db8189 AF |
286 | cmd->duplex = phydev->duplex; |
287 | cmd->port = PORT_MII; | |
288 | cmd->phy_address = phydev->addr; | |
4284b6a5 FF |
289 | cmd->transceiver = phy_is_internal(phydev) ? |
290 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
00db8189 AF |
291 | cmd->autoneg = phydev->autoneg; |
292 | ||
293 | return 0; | |
294 | } | |
9f6d55d0 | 295 | EXPORT_SYMBOL(phy_ethtool_gset); |
00db8189 | 296 | |
b3df0da8 RD |
297 | /** |
298 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
299 | * @phydev: the phy_device struct | |
00c7d920 | 300 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
301 | * @cmd: ioctl cmd to execute |
302 | * | |
303 | * Note that this function is currently incompatible with the | |
00db8189 | 304 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 305 | * current state. Use at own risk. |
00db8189 | 306 | */ |
2f53e904 | 307 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 308 | { |
28b04113 | 309 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 AF |
310 | u16 val = mii_data->val_in; |
311 | ||
312 | switch (cmd) { | |
313 | case SIOCGMIIPHY: | |
314 | mii_data->phy_id = phydev->addr; | |
c6d6a511 LB |
315 | /* fall through */ |
316 | ||
00db8189 | 317 | case SIOCGMIIREG: |
af1dc13e PK |
318 | mii_data->val_out = mdiobus_read(phydev->bus, mii_data->phy_id, |
319 | mii_data->reg_num); | |
e62a768f | 320 | return 0; |
00db8189 AF |
321 | |
322 | case SIOCSMIIREG: | |
00db8189 | 323 | if (mii_data->phy_id == phydev->addr) { |
e109374f | 324 | switch (mii_data->reg_num) { |
00db8189 | 325 | case MII_BMCR: |
2f53e904 | 326 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) |
00db8189 AF |
327 | phydev->autoneg = AUTONEG_DISABLE; |
328 | else | |
329 | phydev->autoneg = AUTONEG_ENABLE; | |
2f53e904 | 330 | if (!phydev->autoneg && (val & BMCR_FULLDPLX)) |
00db8189 AF |
331 | phydev->duplex = DUPLEX_FULL; |
332 | else | |
333 | phydev->duplex = DUPLEX_HALF; | |
2f53e904 | 334 | if (!phydev->autoneg && (val & BMCR_SPEED1000)) |
024a0a3c | 335 | phydev->speed = SPEED_1000; |
2f53e904 SS |
336 | else if (!phydev->autoneg && |
337 | (val & BMCR_SPEED100)) | |
024a0a3c | 338 | phydev->speed = SPEED_100; |
00db8189 AF |
339 | break; |
340 | case MII_ADVERTISE: | |
341 | phydev->advertising = val; | |
342 | break; | |
343 | default: | |
344 | /* do nothing */ | |
345 | break; | |
346 | } | |
347 | } | |
348 | ||
af1dc13e PK |
349 | mdiobus_write(phydev->bus, mii_data->phy_id, |
350 | mii_data->reg_num, val); | |
351 | ||
8e95a202 | 352 | if (mii_data->reg_num == MII_BMCR && |
2613f95f | 353 | val & BMCR_RESET) |
e62a768f SS |
354 | return phy_init_hw(phydev); |
355 | return 0; | |
dda93b48 | 356 | |
c1f19b51 RC |
357 | case SIOCSHWTSTAMP: |
358 | if (phydev->drv->hwtstamp) | |
359 | return phydev->drv->hwtstamp(phydev, ifr); | |
360 | /* fall through */ | |
361 | ||
dda93b48 | 362 | default: |
c6d6a511 | 363 | return -EOPNOTSUPP; |
00db8189 | 364 | } |
00db8189 | 365 | } |
680e9fe9 | 366 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 367 | |
b3df0da8 RD |
368 | /** |
369 | * phy_start_aneg - start auto-negotiation for this PHY device | |
370 | * @phydev: the phy_device struct | |
e1393456 | 371 | * |
b3df0da8 RD |
372 | * Description: Sanitizes the settings (if we're not autonegotiating |
373 | * them), and then calls the driver's config_aneg function. | |
374 | * If the PHYCONTROL Layer is operating, we change the state to | |
375 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 AF |
376 | */ |
377 | int phy_start_aneg(struct phy_device *phydev) | |
378 | { | |
379 | int err; | |
380 | ||
35b5f6b1 | 381 | mutex_lock(&phydev->lock); |
e1393456 AF |
382 | |
383 | if (AUTONEG_DISABLE == phydev->autoneg) | |
384 | phy_sanitize_settings(phydev); | |
385 | ||
386 | err = phydev->drv->config_aneg(phydev); | |
e1393456 AF |
387 | if (err < 0) |
388 | goto out_unlock; | |
389 | ||
390 | if (phydev->state != PHY_HALTED) { | |
391 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
392 | phydev->state = PHY_AN; | |
393 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
394 | } else { | |
395 | phydev->state = PHY_FORCING; | |
396 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
397 | } | |
398 | } | |
399 | ||
400 | out_unlock: | |
35b5f6b1 | 401 | mutex_unlock(&phydev->lock); |
e1393456 AF |
402 | return err; |
403 | } | |
404 | EXPORT_SYMBOL(phy_start_aneg); | |
405 | ||
b3df0da8 RD |
406 | /** |
407 | * phy_start_machine - start PHY state machine tracking | |
408 | * @phydev: the phy_device struct | |
00db8189 | 409 | * |
b3df0da8 | 410 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
411 | * which tracks whether the PHY is starting up, negotiating, |
412 | * etc. This function starts the timer which tracks the state | |
29935aeb SS |
413 | * of the PHY. If you want to maintain your own state machine, |
414 | * do not call this function. | |
b3df0da8 | 415 | */ |
29935aeb | 416 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 417 | { |
bbb47bde | 418 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
419 | } |
420 | ||
b3df0da8 RD |
421 | /** |
422 | * phy_stop_machine - stop the PHY state machine tracking | |
423 | * @phydev: target phy_device struct | |
00db8189 | 424 | * |
b3df0da8 | 425 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 426 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
427 | * phy_detach. |
428 | */ | |
429 | void phy_stop_machine(struct phy_device *phydev) | |
430 | { | |
a390d1f3 | 431 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 432 | |
35b5f6b1 | 433 | mutex_lock(&phydev->lock); |
00db8189 AF |
434 | if (phydev->state > PHY_UP) |
435 | phydev->state = PHY_UP; | |
35b5f6b1 | 436 | mutex_unlock(&phydev->lock); |
00db8189 AF |
437 | } |
438 | ||
b3df0da8 RD |
439 | /** |
440 | * phy_error - enter HALTED state for this PHY device | |
441 | * @phydev: target phy_device struct | |
00db8189 AF |
442 | * |
443 | * Moves the PHY to the HALTED state in response to a read | |
444 | * or write error, and tells the controller the link is down. | |
445 | * Must not be called from interrupt context, or while the | |
446 | * phydev->lock is held. | |
447 | */ | |
9b9a8bfc | 448 | static void phy_error(struct phy_device *phydev) |
00db8189 | 449 | { |
35b5f6b1 | 450 | mutex_lock(&phydev->lock); |
00db8189 | 451 | phydev->state = PHY_HALTED; |
35b5f6b1 | 452 | mutex_unlock(&phydev->lock); |
00db8189 AF |
453 | } |
454 | ||
b3df0da8 RD |
455 | /** |
456 | * phy_interrupt - PHY interrupt handler | |
457 | * @irq: interrupt line | |
458 | * @phy_dat: phy_device pointer | |
e1393456 | 459 | * |
b3df0da8 | 460 | * Description: When a PHY interrupt occurs, the handler disables |
e1393456 AF |
461 | * interrupts, and schedules a work task to clear the interrupt. |
462 | */ | |
7d12e780 | 463 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
464 | { |
465 | struct phy_device *phydev = phy_dat; | |
466 | ||
3c3070d7 MR |
467 | if (PHY_HALTED == phydev->state) |
468 | return IRQ_NONE; /* It can't be ours. */ | |
469 | ||
e1393456 AF |
470 | /* The MDIO bus is not allowed to be written in interrupt |
471 | * context, so we need to disable the irq here. A work | |
472 | * queue will write the PHY to disable and clear the | |
2f53e904 SS |
473 | * interrupt, and then reenable the irq line. |
474 | */ | |
e1393456 | 475 | disable_irq_nosync(irq); |
0ac49527 | 476 | atomic_inc(&phydev->irq_disable); |
e1393456 | 477 | |
bbb47bde | 478 | queue_work(system_power_efficient_wq, &phydev->phy_queue); |
e1393456 AF |
479 | |
480 | return IRQ_HANDLED; | |
481 | } | |
482 | ||
b3df0da8 RD |
483 | /** |
484 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
485 | * @phydev: target phy_device struct | |
486 | */ | |
89ff05ec | 487 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 488 | { |
553fe92b | 489 | int err = phy_clear_interrupt(phydev); |
00db8189 | 490 | |
e1393456 AF |
491 | if (err < 0) |
492 | return err; | |
00db8189 | 493 | |
553fe92b | 494 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 495 | } |
00db8189 | 496 | |
b3df0da8 RD |
497 | /** |
498 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
499 | * @phydev: target phy_device struct | |
500 | */ | |
89ff05ec | 501 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
502 | { |
503 | int err; | |
504 | ||
505 | /* Disable PHY interrupts */ | |
506 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
00db8189 AF |
507 | if (err) |
508 | goto phy_err; | |
509 | ||
510 | /* Clear the interrupt */ | |
511 | err = phy_clear_interrupt(phydev); | |
00db8189 AF |
512 | if (err) |
513 | goto phy_err; | |
514 | ||
515 | return 0; | |
516 | ||
517 | phy_err: | |
518 | phy_error(phydev); | |
519 | ||
520 | return err; | |
521 | } | |
e1393456 | 522 | |
b3df0da8 RD |
523 | /** |
524 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
525 | * @phydev: target phy_device struct | |
e1393456 | 526 | * |
b3df0da8 RD |
527 | * Description: Request the interrupt for the given PHY. |
528 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 529 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 530 | * This should only be called with a valid IRQ number. |
b3df0da8 | 531 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
532 | */ |
533 | int phy_start_interrupts(struct phy_device *phydev) | |
534 | { | |
0ac49527 | 535 | atomic_set(&phydev->irq_disable, 0); |
33c133cc SS |
536 | if (request_irq(phydev->irq, phy_interrupt, 0, "phy_interrupt", |
537 | phydev) < 0) { | |
8d242488 JP |
538 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
539 | phydev->bus->name, phydev->irq); | |
e1393456 AF |
540 | phydev->irq = PHY_POLL; |
541 | return 0; | |
542 | } | |
543 | ||
e62a768f | 544 | return phy_enable_interrupts(phydev); |
e1393456 AF |
545 | } |
546 | EXPORT_SYMBOL(phy_start_interrupts); | |
547 | ||
b3df0da8 RD |
548 | /** |
549 | * phy_stop_interrupts - disable interrupts from a PHY device | |
550 | * @phydev: target phy_device struct | |
551 | */ | |
e1393456 AF |
552 | int phy_stop_interrupts(struct phy_device *phydev) |
553 | { | |
553fe92b | 554 | int err = phy_disable_interrupts(phydev); |
e1393456 AF |
555 | |
556 | if (err) | |
557 | phy_error(phydev); | |
558 | ||
0ac49527 MR |
559 | free_irq(phydev->irq, phydev); |
560 | ||
2f53e904 | 561 | /* Cannot call flush_scheduled_work() here as desired because |
0ac49527 MR |
562 | * of rtnl_lock(), but we do not really care about what would |
563 | * be done, except from enable_irq(), so cancel any work | |
564 | * possibly pending and take care of the matter below. | |
3c3070d7 | 565 | */ |
28e53bdd | 566 | cancel_work_sync(&phydev->phy_queue); |
2f53e904 | 567 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
568 | * been left unbalanced from phy_interrupt() and enable_irq() |
569 | * has to be called so that other devices on the line work. | |
570 | */ | |
571 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
572 | enable_irq(phydev->irq); | |
e1393456 AF |
573 | |
574 | return err; | |
575 | } | |
576 | EXPORT_SYMBOL(phy_stop_interrupts); | |
577 | ||
b3df0da8 RD |
578 | /** |
579 | * phy_change - Scheduled by the phy_interrupt/timer to handle PHY changes | |
580 | * @work: work_struct that describes the work to be done | |
581 | */ | |
5ea94e76 | 582 | void phy_change(struct work_struct *work) |
e1393456 | 583 | { |
c4028958 DH |
584 | struct phy_device *phydev = |
585 | container_of(work, struct phy_device, phy_queue); | |
e1393456 | 586 | |
a8729eb3 AG |
587 | if (phydev->drv->did_interrupt && |
588 | !phydev->drv->did_interrupt(phydev)) | |
589 | goto ignore; | |
590 | ||
e62a768f | 591 | if (phy_disable_interrupts(phydev)) |
e1393456 AF |
592 | goto phy_err; |
593 | ||
35b5f6b1 | 594 | mutex_lock(&phydev->lock); |
e1393456 AF |
595 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
596 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 597 | mutex_unlock(&phydev->lock); |
e1393456 | 598 | |
0ac49527 | 599 | atomic_dec(&phydev->irq_disable); |
e1393456 AF |
600 | enable_irq(phydev->irq); |
601 | ||
602 | /* Reenable interrupts */ | |
e62a768f SS |
603 | if (PHY_HALTED != phydev->state && |
604 | phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) | |
e1393456 AF |
605 | goto irq_enable_err; |
606 | ||
a390d1f3 MS |
607 | /* reschedule state queue work to run as soon as possible */ |
608 | cancel_delayed_work_sync(&phydev->state_queue); | |
bbb47bde | 609 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); |
e1393456 AF |
610 | return; |
611 | ||
a8729eb3 AG |
612 | ignore: |
613 | atomic_dec(&phydev->irq_disable); | |
614 | enable_irq(phydev->irq); | |
615 | return; | |
616 | ||
e1393456 AF |
617 | irq_enable_err: |
618 | disable_irq(phydev->irq); | |
0ac49527 | 619 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
620 | phy_err: |
621 | phy_error(phydev); | |
622 | } | |
623 | ||
b3df0da8 RD |
624 | /** |
625 | * phy_stop - Bring down the PHY link, and stop checking the status | |
626 | * @phydev: target phy_device struct | |
627 | */ | |
e1393456 AF |
628 | void phy_stop(struct phy_device *phydev) |
629 | { | |
35b5f6b1 | 630 | mutex_lock(&phydev->lock); |
e1393456 AF |
631 | |
632 | if (PHY_HALTED == phydev->state) | |
633 | goto out_unlock; | |
634 | ||
2c7b4921 | 635 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
636 | /* Disable PHY Interrupts */ |
637 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 638 | |
3c3070d7 MR |
639 | /* Clear any pending interrupts */ |
640 | phy_clear_interrupt(phydev); | |
641 | } | |
e1393456 | 642 | |
6daf6531 MR |
643 | phydev->state = PHY_HALTED; |
644 | ||
e1393456 | 645 | out_unlock: |
35b5f6b1 | 646 | mutex_unlock(&phydev->lock); |
3c3070d7 | 647 | |
2f53e904 | 648 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
649 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
650 | * will not reenable interrupts. | |
651 | */ | |
e1393456 | 652 | } |
2f53e904 | 653 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 654 | |
b3df0da8 RD |
655 | /** |
656 | * phy_start - start or restart a PHY device | |
657 | * @phydev: target phy_device struct | |
e1393456 | 658 | * |
b3df0da8 | 659 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
660 | * handle PHY-related work. Used during startup to start the |
661 | * PHY, and after a call to phy_stop() to resume operation. | |
662 | * Also used to indicate the MDIO bus has cleared an error | |
663 | * condition. | |
664 | */ | |
665 | void phy_start(struct phy_device *phydev) | |
666 | { | |
35b5f6b1 | 667 | mutex_lock(&phydev->lock); |
e1393456 AF |
668 | |
669 | switch (phydev->state) { | |
e109374f FF |
670 | case PHY_STARTING: |
671 | phydev->state = PHY_PENDING; | |
672 | break; | |
673 | case PHY_READY: | |
674 | phydev->state = PHY_UP; | |
675 | break; | |
676 | case PHY_HALTED: | |
677 | phydev->state = PHY_RESUMING; | |
678 | default: | |
679 | break; | |
e1393456 | 680 | } |
35b5f6b1 | 681 | mutex_unlock(&phydev->lock); |
e1393456 | 682 | } |
e1393456 | 683 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 684 | |
35b5f6b1 NC |
685 | /** |
686 | * phy_state_machine - Handle the state machine | |
687 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 688 | */ |
4f9c85a1 | 689 | void phy_state_machine(struct work_struct *work) |
00db8189 | 690 | { |
bf6aede7 | 691 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 692 | struct phy_device *phydev = |
a390d1f3 | 693 | container_of(dwork, struct phy_device, state_queue); |
be9dad1f | 694 | int needs_aneg = 0, do_suspend = 0; |
00db8189 AF |
695 | int err = 0; |
696 | ||
35b5f6b1 | 697 | mutex_lock(&phydev->lock); |
00db8189 | 698 | |
e109374f FF |
699 | switch (phydev->state) { |
700 | case PHY_DOWN: | |
701 | case PHY_STARTING: | |
702 | case PHY_READY: | |
703 | case PHY_PENDING: | |
704 | break; | |
705 | case PHY_UP: | |
706 | needs_aneg = 1; | |
00db8189 | 707 | |
e109374f FF |
708 | phydev->link_timeout = PHY_AN_TIMEOUT; |
709 | ||
710 | break; | |
711 | case PHY_AN: | |
712 | err = phy_read_status(phydev); | |
e109374f | 713 | if (err < 0) |
00db8189 | 714 | break; |
6b655529 | 715 | |
2f53e904 | 716 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
717 | if (!phydev->link) { |
718 | phydev->state = PHY_NOLINK; | |
719 | netif_carrier_off(phydev->attached_dev); | |
720 | phydev->adjust_link(phydev->attached_dev); | |
721 | break; | |
722 | } | |
6b655529 | 723 | |
2f53e904 | 724 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
725 | err = phy_aneg_done(phydev); |
726 | if (err < 0) | |
727 | break; | |
6b655529 | 728 | |
e109374f FF |
729 | /* If AN is done, we're running */ |
730 | if (err > 0) { | |
731 | phydev->state = PHY_RUNNING; | |
732 | netif_carrier_on(phydev->attached_dev); | |
733 | phydev->adjust_link(phydev->attached_dev); | |
00db8189 | 734 | |
e109374f FF |
735 | } else if (0 == phydev->link_timeout--) { |
736 | needs_aneg = 1; | |
2f53e904 | 737 | /* If we have the magic_aneg bit, we try again */ |
e109374f FF |
738 | if (phydev->drv->flags & PHY_HAS_MAGICANEG) |
739 | break; | |
740 | } | |
741 | break; | |
742 | case PHY_NOLINK: | |
743 | err = phy_read_status(phydev); | |
e109374f | 744 | if (err) |
00db8189 | 745 | break; |
00db8189 | 746 | |
e109374f FF |
747 | if (phydev->link) { |
748 | phydev->state = PHY_RUNNING; | |
749 | netif_carrier_on(phydev->attached_dev); | |
750 | phydev->adjust_link(phydev->attached_dev); | |
751 | } | |
752 | break; | |
753 | case PHY_FORCING: | |
754 | err = genphy_update_link(phydev); | |
e109374f | 755 | if (err) |
00db8189 | 756 | break; |
00db8189 | 757 | |
e109374f FF |
758 | if (phydev->link) { |
759 | phydev->state = PHY_RUNNING; | |
760 | netif_carrier_on(phydev->attached_dev); | |
761 | } else { | |
762 | if (0 == phydev->link_timeout--) | |
763 | needs_aneg = 1; | |
764 | } | |
00db8189 | 765 | |
e109374f FF |
766 | phydev->adjust_link(phydev->attached_dev); |
767 | break; | |
768 | case PHY_RUNNING: | |
769 | /* Only register a CHANGE if we are | |
770 | * polling or ignoring interrupts | |
771 | */ | |
772 | if (!phy_interrupt_is_valid(phydev)) | |
773 | phydev->state = PHY_CHANGELINK; | |
774 | break; | |
775 | case PHY_CHANGELINK: | |
776 | err = phy_read_status(phydev); | |
e109374f | 777 | if (err) |
00db8189 | 778 | break; |
00db8189 | 779 | |
e109374f FF |
780 | if (phydev->link) { |
781 | phydev->state = PHY_RUNNING; | |
782 | netif_carrier_on(phydev->attached_dev); | |
783 | } else { | |
784 | phydev->state = PHY_NOLINK; | |
785 | netif_carrier_off(phydev->attached_dev); | |
786 | } | |
00db8189 | 787 | |
e109374f | 788 | phydev->adjust_link(phydev->attached_dev); |
00db8189 | 789 | |
e109374f FF |
790 | if (phy_interrupt_is_valid(phydev)) |
791 | err = phy_config_interrupt(phydev, | |
2f53e904 | 792 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
793 | break; |
794 | case PHY_HALTED: | |
795 | if (phydev->link) { | |
796 | phydev->link = 0; | |
797 | netif_carrier_off(phydev->attached_dev); | |
00db8189 | 798 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
799 | do_suspend = 1; |
800 | } | |
801 | break; | |
802 | case PHY_RESUMING: | |
e109374f | 803 | err = phy_clear_interrupt(phydev); |
e109374f FF |
804 | if (err) |
805 | break; | |
00db8189 | 806 | |
2f53e904 | 807 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
e109374f FF |
808 | if (err) |
809 | break; | |
00db8189 | 810 | |
e109374f FF |
811 | if (AUTONEG_ENABLE == phydev->autoneg) { |
812 | err = phy_aneg_done(phydev); | |
813 | if (err < 0) | |
00db8189 AF |
814 | break; |
815 | ||
e109374f | 816 | /* err > 0 if AN is done. |
2f53e904 SS |
817 | * Otherwise, it's 0, and we're still waiting for AN |
818 | */ | |
e109374f | 819 | if (err > 0) { |
42caa074 WF |
820 | err = phy_read_status(phydev); |
821 | if (err) | |
822 | break; | |
823 | ||
824 | if (phydev->link) { | |
825 | phydev->state = PHY_RUNNING; | |
826 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 827 | } else { |
42caa074 | 828 | phydev->state = PHY_NOLINK; |
2f53e904 | 829 | } |
42caa074 | 830 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
831 | } else { |
832 | phydev->state = PHY_AN; | |
833 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 834 | } |
e109374f FF |
835 | } else { |
836 | err = phy_read_status(phydev); | |
837 | if (err) | |
838 | break; | |
839 | ||
840 | if (phydev->link) { | |
841 | phydev->state = PHY_RUNNING; | |
842 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 843 | } else { |
e109374f | 844 | phydev->state = PHY_NOLINK; |
2f53e904 | 845 | } |
e109374f FF |
846 | phydev->adjust_link(phydev->attached_dev); |
847 | } | |
848 | break; | |
00db8189 AF |
849 | } |
850 | ||
35b5f6b1 | 851 | mutex_unlock(&phydev->lock); |
00db8189 AF |
852 | |
853 | if (needs_aneg) | |
854 | err = phy_start_aneg(phydev); | |
855 | ||
be9dad1f SH |
856 | if (do_suspend) |
857 | phy_suspend(phydev); | |
858 | ||
00db8189 AF |
859 | if (err < 0) |
860 | phy_error(phydev); | |
861 | ||
bbb47bde | 862 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, |
2f53e904 | 863 | PHY_STATE_TIME * HZ); |
35b5f6b1 | 864 | } |
a59a4d19 | 865 | |
5ea94e76 FF |
866 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
867 | { | |
868 | cancel_work_sync(&phydev->phy_queue); | |
869 | phydev->link = new_link; | |
870 | schedule_work(&phydev->phy_queue); | |
871 | } | |
872 | EXPORT_SYMBOL(phy_mac_interrupt); | |
873 | ||
a59a4d19 GC |
874 | static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad, |
875 | int addr) | |
876 | { | |
877 | /* Write the desired MMD Devad */ | |
878 | bus->write(bus, addr, MII_MMD_CTRL, devad); | |
879 | ||
880 | /* Write the desired MMD register address */ | |
881 | bus->write(bus, addr, MII_MMD_DATA, prtad); | |
882 | ||
883 | /* Select the Function : DATA with no post increment */ | |
884 | bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
885 | } | |
886 | ||
887 | /** | |
888 | * phy_read_mmd_indirect - reads data from the MMD registers | |
889 | * @bus: the target MII bus | |
890 | * @prtad: MMD Address | |
891 | * @devad: MMD DEVAD | |
892 | * @addr: PHY address on the MII bus | |
893 | * | |
894 | * Description: it reads data from the MMD registers (clause 22 to access to | |
895 | * clause 45) of the specified phy address. | |
896 | * To read these register we have: | |
897 | * 1) Write reg 13 // DEVAD | |
898 | * 2) Write reg 14 // MMD Address | |
899 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
900 | * 3) Read reg 14 // Read MMD data | |
901 | */ | |
902 | static int phy_read_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
903 | int addr) | |
904 | { | |
a59a4d19 GC |
905 | mmd_phy_indirect(bus, prtad, devad, addr); |
906 | ||
907 | /* Read the content of the MMD's selected register */ | |
e62a768f | 908 | return bus->read(bus, addr, MII_MMD_DATA); |
a59a4d19 GC |
909 | } |
910 | ||
911 | /** | |
912 | * phy_write_mmd_indirect - writes data to the MMD registers | |
913 | * @bus: the target MII bus | |
914 | * @prtad: MMD Address | |
915 | * @devad: MMD DEVAD | |
916 | * @addr: PHY address on the MII bus | |
917 | * @data: data to write in the MMD register | |
918 | * | |
919 | * Description: Write data from the MMD registers of the specified | |
920 | * phy address. | |
921 | * To write these register we have: | |
922 | * 1) Write reg 13 // DEVAD | |
923 | * 2) Write reg 14 // MMD Address | |
924 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
925 | * 3) Write reg 14 // Write MMD data | |
926 | */ | |
927 | static void phy_write_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
928 | int addr, u32 data) | |
929 | { | |
930 | mmd_phy_indirect(bus, prtad, devad, addr); | |
931 | ||
932 | /* Write the data into MMD's selected register */ | |
933 | bus->write(bus, addr, MII_MMD_DATA, data); | |
934 | } | |
935 | ||
a59a4d19 GC |
936 | /** |
937 | * phy_init_eee - init and check the EEE feature | |
938 | * @phydev: target phy_device struct | |
939 | * @clk_stop_enable: PHY may stop the clock during LPI | |
940 | * | |
941 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
942 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
943 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
944 | * bit if required. | |
945 | */ | |
946 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
947 | { | |
a59a4d19 GC |
948 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
949 | * Also EEE feature is active when core is operating with MII, GMII | |
950 | * or RGMII. | |
951 | */ | |
952 | if ((phydev->duplex == DUPLEX_FULL) && | |
953 | ((phydev->interface == PHY_INTERFACE_MODE_MII) || | |
954 | (phydev->interface == PHY_INTERFACE_MODE_GMII) || | |
955 | (phydev->interface == PHY_INTERFACE_MODE_RGMII))) { | |
956 | int eee_lp, eee_cap, eee_adv; | |
957 | u32 lp, cap, adv; | |
958 | int idx, status; | |
959 | ||
960 | /* Read phy status to properly get the right settings */ | |
961 | status = phy_read_status(phydev); | |
962 | if (status) | |
963 | return status; | |
964 | ||
965 | /* First check if the EEE ability is supported */ | |
966 | eee_cap = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
967 | MDIO_MMD_PCS, phydev->addr); | |
968 | if (eee_cap < 0) | |
969 | return eee_cap; | |
970 | ||
b32607dd | 971 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 972 | if (!cap) |
e62a768f | 973 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
974 | |
975 | /* Check which link settings negotiated and verify it in | |
976 | * the EEE advertising registers. | |
977 | */ | |
978 | eee_lp = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
979 | MDIO_MMD_AN, phydev->addr); | |
980 | if (eee_lp < 0) | |
981 | return eee_lp; | |
982 | ||
983 | eee_adv = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
984 | MDIO_MMD_AN, phydev->addr); | |
985 | if (eee_adv < 0) | |
986 | return eee_adv; | |
987 | ||
b32607dd AB |
988 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
989 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
a59a4d19 | 990 | idx = phy_find_setting(phydev->speed, phydev->duplex); |
9a9c56cb | 991 | if (!(lp & adv & settings[idx].setting)) |
e62a768f | 992 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
993 | |
994 | if (clk_stop_enable) { | |
995 | /* Configure the PHY to stop receiving xMII | |
996 | * clock while it is signaling LPI. | |
997 | */ | |
998 | int val = phy_read_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
999 | MDIO_MMD_PCS, | |
1000 | phydev->addr); | |
1001 | if (val < 0) | |
1002 | return val; | |
1003 | ||
1004 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
1005 | phy_write_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1006 | MDIO_MMD_PCS, phydev->addr, val); | |
1007 | } | |
1008 | ||
e62a768f | 1009 | return 0; /* EEE supported */ |
a59a4d19 GC |
1010 | } |
1011 | ||
e62a768f | 1012 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1013 | } |
1014 | EXPORT_SYMBOL(phy_init_eee); | |
1015 | ||
1016 | /** | |
1017 | * phy_get_eee_err - report the EEE wake error count | |
1018 | * @phydev: target phy_device struct | |
1019 | * | |
1020 | * Description: it is to report the number of time where the PHY | |
1021 | * failed to complete its normal wake sequence. | |
1022 | */ | |
1023 | int phy_get_eee_err(struct phy_device *phydev) | |
1024 | { | |
1025 | return phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_WK_ERR, | |
1026 | MDIO_MMD_PCS, phydev->addr); | |
a59a4d19 GC |
1027 | } |
1028 | EXPORT_SYMBOL(phy_get_eee_err); | |
1029 | ||
1030 | /** | |
1031 | * phy_ethtool_get_eee - get EEE supported and status | |
1032 | * @phydev: target phy_device struct | |
1033 | * @data: ethtool_eee data | |
1034 | * | |
1035 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1036 | * capabilities. | |
1037 | */ | |
1038 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1039 | { | |
1040 | int val; | |
1041 | ||
1042 | /* Get Supported EEE */ | |
1043 | val = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
1044 | MDIO_MMD_PCS, phydev->addr); | |
1045 | if (val < 0) | |
1046 | return val; | |
b32607dd | 1047 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1048 | |
1049 | /* Get advertisement EEE */ | |
1050 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1051 | MDIO_MMD_AN, phydev->addr); | |
1052 | if (val < 0) | |
1053 | return val; | |
b32607dd | 1054 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1055 | |
1056 | /* Get LP advertisement EEE */ | |
1057 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
1058 | MDIO_MMD_AN, phydev->addr); | |
1059 | if (val < 0) | |
1060 | return val; | |
b32607dd | 1061 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1062 | |
1063 | return 0; | |
1064 | } | |
1065 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1066 | ||
1067 | /** | |
1068 | * phy_ethtool_set_eee - set EEE supported and status | |
1069 | * @phydev: target phy_device struct | |
1070 | * @data: ethtool_eee data | |
1071 | * | |
1072 | * Description: it is to program the Advertisement EEE register. | |
1073 | */ | |
1074 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1075 | { | |
553fe92b | 1076 | int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised); |
a59a4d19 | 1077 | |
a59a4d19 GC |
1078 | phy_write_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, MDIO_MMD_AN, |
1079 | phydev->addr, val); | |
1080 | ||
1081 | return 0; | |
1082 | } | |
1083 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1084 | |
1085 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1086 | { | |
1087 | if (phydev->drv->set_wol) | |
1088 | return phydev->drv->set_wol(phydev, wol); | |
1089 | ||
1090 | return -EOPNOTSUPP; | |
1091 | } | |
1092 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1093 | ||
1094 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1095 | { | |
1096 | if (phydev->drv->get_wol) | |
1097 | phydev->drv->get_wol(phydev, wol); | |
1098 | } | |
1099 | EXPORT_SYMBOL(phy_ethtool_get_wol); |