Commit | Line | Data |
---|---|---|
2f53e904 | 1 | /* Framework for configuring and reading PHY devices |
00db8189 AF |
2 | * Based on code in sungem_phy.c and gianfar_phy.c |
3 | * | |
4 | * Author: Andy Fleming | |
5 | * | |
6 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
0ac49527 | 7 | * Copyright (c) 2006, 2007 Maciej W. Rozycki |
00db8189 AF |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | * | |
14 | */ | |
8d242488 JP |
15 | |
16 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
17 | ||
00db8189 | 18 | #include <linux/kernel.h> |
00db8189 AF |
19 | #include <linux/string.h> |
20 | #include <linux/errno.h> | |
21 | #include <linux/unistd.h> | |
00db8189 | 22 | #include <linux/interrupt.h> |
00db8189 AF |
23 | #include <linux/delay.h> |
24 | #include <linux/netdevice.h> | |
25 | #include <linux/etherdevice.h> | |
26 | #include <linux/skbuff.h> | |
00db8189 AF |
27 | #include <linux/mm.h> |
28 | #include <linux/module.h> | |
00db8189 AF |
29 | #include <linux/mii.h> |
30 | #include <linux/ethtool.h> | |
31 | #include <linux/phy.h> | |
3c3070d7 MR |
32 | #include <linux/timer.h> |
33 | #include <linux/workqueue.h> | |
a59a4d19 | 34 | #include <linux/mdio.h> |
2f53e904 SS |
35 | #include <linux/io.h> |
36 | #include <linux/uaccess.h> | |
60063497 | 37 | #include <linux/atomic.h> |
2f53e904 | 38 | |
00db8189 | 39 | #include <asm/irq.h> |
00db8189 | 40 | |
766d1d38 FF |
41 | static const char *phy_speed_to_str(int speed) |
42 | { | |
43 | switch (speed) { | |
44 | case SPEED_10: | |
45 | return "10Mbps"; | |
46 | case SPEED_100: | |
47 | return "100Mbps"; | |
48 | case SPEED_1000: | |
49 | return "1Gbps"; | |
50 | case SPEED_2500: | |
51 | return "2.5Gbps"; | |
52 | case SPEED_10000: | |
53 | return "10Gbps"; | |
54 | case SPEED_UNKNOWN: | |
55 | return "Unknown"; | |
56 | default: | |
57 | return "Unsupported (update phy.c)"; | |
58 | } | |
59 | } | |
60 | ||
b3df0da8 RD |
61 | /** |
62 | * phy_print_status - Convenience function to print out the current phy status | |
63 | * @phydev: the phy_device struct | |
e1393456 AF |
64 | */ |
65 | void phy_print_status(struct phy_device *phydev) | |
66 | { | |
2f53e904 | 67 | if (phydev->link) { |
df40cc88 | 68 | netdev_info(phydev->attached_dev, |
766d1d38 FF |
69 | "Link is Up - %s/%s - flow control %s\n", |
70 | phy_speed_to_str(phydev->speed), | |
df40cc88 FF |
71 | DUPLEX_FULL == phydev->duplex ? "Full" : "Half", |
72 | phydev->pause ? "rx/tx" : "off"); | |
2f53e904 | 73 | } else { |
43b6329f | 74 | netdev_info(phydev->attached_dev, "Link is Down\n"); |
2f53e904 | 75 | } |
e1393456 AF |
76 | } |
77 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 78 | |
b3df0da8 RD |
79 | /** |
80 | * phy_clear_interrupt - Ack the phy device's interrupt | |
81 | * @phydev: the phy_device struct | |
82 | * | |
83 | * If the @phydev driver has an ack_interrupt function, call it to | |
84 | * ack and clear the phy device's interrupt. | |
85 | * | |
86 | * Returns 0 on success on < 0 on error. | |
87 | */ | |
89ff05ec | 88 | static int phy_clear_interrupt(struct phy_device *phydev) |
00db8189 | 89 | { |
00db8189 | 90 | if (phydev->drv->ack_interrupt) |
e62a768f | 91 | return phydev->drv->ack_interrupt(phydev); |
00db8189 | 92 | |
e62a768f | 93 | return 0; |
00db8189 AF |
94 | } |
95 | ||
b3df0da8 RD |
96 | /** |
97 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
98 | * @phydev: the phy_device struct | |
99 | * @interrupts: interrupt flags to configure for this @phydev | |
100 | * | |
101 | * Returns 0 on success on < 0 on error. | |
102 | */ | |
89ff05ec | 103 | static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) |
00db8189 | 104 | { |
00db8189 AF |
105 | phydev->interrupts = interrupts; |
106 | if (phydev->drv->config_intr) | |
e62a768f | 107 | return phydev->drv->config_intr(phydev); |
00db8189 | 108 | |
e62a768f | 109 | return 0; |
00db8189 AF |
110 | } |
111 | ||
112 | ||
b3df0da8 RD |
113 | /** |
114 | * phy_aneg_done - return auto-negotiation status | |
115 | * @phydev: target phy_device struct | |
00db8189 | 116 | * |
b3df0da8 | 117 | * Description: Reads the status register and returns 0 either if |
00db8189 AF |
118 | * auto-negotiation is incomplete, or if there was an error. |
119 | * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. | |
120 | */ | |
121 | static inline int phy_aneg_done(struct phy_device *phydev) | |
122 | { | |
553fe92b | 123 | int retval = phy_read(phydev, MII_BMSR); |
00db8189 AF |
124 | |
125 | return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); | |
126 | } | |
127 | ||
00db8189 | 128 | /* A structure for mapping a particular speed and duplex |
2f53e904 SS |
129 | * combination to a particular SUPPORTED and ADVERTISED value |
130 | */ | |
00db8189 AF |
131 | struct phy_setting { |
132 | int speed; | |
133 | int duplex; | |
134 | u32 setting; | |
135 | }; | |
136 | ||
137 | /* A mapping of all SUPPORTED settings to speed/duplex */ | |
f71e1309 | 138 | static const struct phy_setting settings[] = { |
00db8189 AF |
139 | { |
140 | .speed = 10000, | |
141 | .duplex = DUPLEX_FULL, | |
142 | .setting = SUPPORTED_10000baseT_Full, | |
143 | }, | |
144 | { | |
145 | .speed = SPEED_1000, | |
146 | .duplex = DUPLEX_FULL, | |
147 | .setting = SUPPORTED_1000baseT_Full, | |
148 | }, | |
149 | { | |
150 | .speed = SPEED_1000, | |
151 | .duplex = DUPLEX_HALF, | |
152 | .setting = SUPPORTED_1000baseT_Half, | |
153 | }, | |
154 | { | |
155 | .speed = SPEED_100, | |
156 | .duplex = DUPLEX_FULL, | |
157 | .setting = SUPPORTED_100baseT_Full, | |
158 | }, | |
159 | { | |
160 | .speed = SPEED_100, | |
161 | .duplex = DUPLEX_HALF, | |
162 | .setting = SUPPORTED_100baseT_Half, | |
163 | }, | |
164 | { | |
165 | .speed = SPEED_10, | |
166 | .duplex = DUPLEX_FULL, | |
167 | .setting = SUPPORTED_10baseT_Full, | |
168 | }, | |
169 | { | |
170 | .speed = SPEED_10, | |
171 | .duplex = DUPLEX_HALF, | |
172 | .setting = SUPPORTED_10baseT_Half, | |
173 | }, | |
174 | }; | |
175 | ||
ff8ac609 | 176 | #define MAX_NUM_SETTINGS ARRAY_SIZE(settings) |
00db8189 | 177 | |
b3df0da8 RD |
178 | /** |
179 | * phy_find_setting - find a PHY settings array entry that matches speed & duplex | |
180 | * @speed: speed to match | |
181 | * @duplex: duplex to match | |
00db8189 | 182 | * |
b3df0da8 | 183 | * Description: Searches the settings array for the setting which |
00db8189 AF |
184 | * matches the desired speed and duplex, and returns the index |
185 | * of that setting. Returns the index of the last setting if | |
186 | * none of the others match. | |
187 | */ | |
188 | static inline int phy_find_setting(int speed, int duplex) | |
189 | { | |
190 | int idx = 0; | |
191 | ||
192 | while (idx < ARRAY_SIZE(settings) && | |
2f53e904 | 193 | (settings[idx].speed != speed || settings[idx].duplex != duplex)) |
00db8189 AF |
194 | idx++; |
195 | ||
196 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
197 | } | |
198 | ||
b3df0da8 RD |
199 | /** |
200 | * phy_find_valid - find a PHY setting that matches the requested features mask | |
201 | * @idx: The first index in settings[] to search | |
202 | * @features: A mask of the valid settings | |
00db8189 | 203 | * |
b3df0da8 | 204 | * Description: Returns the index of the first valid setting less |
00db8189 AF |
205 | * than or equal to the one pointed to by idx, as determined by |
206 | * the mask in features. Returns the index of the last setting | |
207 | * if nothing else matches. | |
208 | */ | |
209 | static inline int phy_find_valid(int idx, u32 features) | |
210 | { | |
211 | while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) | |
212 | idx++; | |
213 | ||
214 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
215 | } | |
216 | ||
b3df0da8 RD |
217 | /** |
218 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
219 | * @phydev: the target phy_device struct | |
00db8189 | 220 | * |
b3df0da8 | 221 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 222 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 223 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 224 | */ |
89ff05ec | 225 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 AF |
226 | { |
227 | u32 features = phydev->supported; | |
228 | int idx; | |
229 | ||
230 | /* Sanitize settings based on PHY capabilities */ | |
231 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 232 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 AF |
233 | |
234 | idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), | |
235 | features); | |
236 | ||
237 | phydev->speed = settings[idx].speed; | |
238 | phydev->duplex = settings[idx].duplex; | |
239 | } | |
00db8189 | 240 | |
b3df0da8 RD |
241 | /** |
242 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
243 | * @phydev: target phy_device struct | |
244 | * @cmd: ethtool_cmd | |
00db8189 AF |
245 | * |
246 | * A few notes about parameter checking: | |
247 | * - We don't set port or transceiver, so we don't care what they | |
248 | * were set to. | |
249 | * - phy_start_aneg() will make sure forced settings are sane, and | |
250 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 251 | * care if ethtool tries to give us bad values. |
00db8189 AF |
252 | */ |
253 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
254 | { | |
25db0338 DD |
255 | u32 speed = ethtool_cmd_speed(cmd); |
256 | ||
00db8189 AF |
257 | if (cmd->phy_address != phydev->addr) |
258 | return -EINVAL; | |
259 | ||
2f53e904 | 260 | /* We make sure that we don't pass unsupported values in to the PHY */ |
00db8189 AF |
261 | cmd->advertising &= phydev->supported; |
262 | ||
263 | /* Verify the settings we care about. */ | |
264 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
265 | return -EINVAL; | |
266 | ||
267 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
268 | return -EINVAL; | |
269 | ||
8e95a202 | 270 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
271 | ((speed != SPEED_1000 && |
272 | speed != SPEED_100 && | |
273 | speed != SPEED_10) || | |
8e95a202 JP |
274 | (cmd->duplex != DUPLEX_HALF && |
275 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
276 | return -EINVAL; |
277 | ||
278 | phydev->autoneg = cmd->autoneg; | |
279 | ||
25db0338 | 280 | phydev->speed = speed; |
00db8189 AF |
281 | |
282 | phydev->advertising = cmd->advertising; | |
283 | ||
284 | if (AUTONEG_ENABLE == cmd->autoneg) | |
285 | phydev->advertising |= ADVERTISED_Autoneg; | |
286 | else | |
287 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
288 | ||
289 | phydev->duplex = cmd->duplex; | |
290 | ||
291 | /* Restart the PHY */ | |
292 | phy_start_aneg(phydev); | |
293 | ||
294 | return 0; | |
295 | } | |
9f6d55d0 | 296 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 AF |
297 | |
298 | int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
299 | { | |
300 | cmd->supported = phydev->supported; | |
301 | ||
302 | cmd->advertising = phydev->advertising; | |
114002bc | 303 | cmd->lp_advertising = phydev->lp_advertising; |
00db8189 | 304 | |
70739497 | 305 | ethtool_cmd_speed_set(cmd, phydev->speed); |
00db8189 AF |
306 | cmd->duplex = phydev->duplex; |
307 | cmd->port = PORT_MII; | |
308 | cmd->phy_address = phydev->addr; | |
4284b6a5 FF |
309 | cmd->transceiver = phy_is_internal(phydev) ? |
310 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
00db8189 AF |
311 | cmd->autoneg = phydev->autoneg; |
312 | ||
313 | return 0; | |
314 | } | |
9f6d55d0 | 315 | EXPORT_SYMBOL(phy_ethtool_gset); |
00db8189 | 316 | |
b3df0da8 RD |
317 | /** |
318 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
319 | * @phydev: the phy_device struct | |
00c7d920 | 320 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
321 | * @cmd: ioctl cmd to execute |
322 | * | |
323 | * Note that this function is currently incompatible with the | |
00db8189 | 324 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 325 | * current state. Use at own risk. |
00db8189 | 326 | */ |
2f53e904 | 327 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 328 | { |
28b04113 | 329 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 AF |
330 | u16 val = mii_data->val_in; |
331 | ||
332 | switch (cmd) { | |
333 | case SIOCGMIIPHY: | |
334 | mii_data->phy_id = phydev->addr; | |
c6d6a511 LB |
335 | /* fall through */ |
336 | ||
00db8189 | 337 | case SIOCGMIIREG: |
af1dc13e PK |
338 | mii_data->val_out = mdiobus_read(phydev->bus, mii_data->phy_id, |
339 | mii_data->reg_num); | |
e62a768f | 340 | return 0; |
00db8189 AF |
341 | |
342 | case SIOCSMIIREG: | |
00db8189 | 343 | if (mii_data->phy_id == phydev->addr) { |
e109374f | 344 | switch (mii_data->reg_num) { |
00db8189 | 345 | case MII_BMCR: |
2f53e904 | 346 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) |
00db8189 AF |
347 | phydev->autoneg = AUTONEG_DISABLE; |
348 | else | |
349 | phydev->autoneg = AUTONEG_ENABLE; | |
2f53e904 | 350 | if (!phydev->autoneg && (val & BMCR_FULLDPLX)) |
00db8189 AF |
351 | phydev->duplex = DUPLEX_FULL; |
352 | else | |
353 | phydev->duplex = DUPLEX_HALF; | |
2f53e904 | 354 | if (!phydev->autoneg && (val & BMCR_SPEED1000)) |
024a0a3c | 355 | phydev->speed = SPEED_1000; |
2f53e904 SS |
356 | else if (!phydev->autoneg && |
357 | (val & BMCR_SPEED100)) | |
024a0a3c | 358 | phydev->speed = SPEED_100; |
00db8189 AF |
359 | break; |
360 | case MII_ADVERTISE: | |
361 | phydev->advertising = val; | |
362 | break; | |
363 | default: | |
364 | /* do nothing */ | |
365 | break; | |
366 | } | |
367 | } | |
368 | ||
af1dc13e PK |
369 | mdiobus_write(phydev->bus, mii_data->phy_id, |
370 | mii_data->reg_num, val); | |
371 | ||
8e95a202 | 372 | if (mii_data->reg_num == MII_BMCR && |
2613f95f | 373 | val & BMCR_RESET) |
e62a768f SS |
374 | return phy_init_hw(phydev); |
375 | return 0; | |
dda93b48 | 376 | |
c1f19b51 RC |
377 | case SIOCSHWTSTAMP: |
378 | if (phydev->drv->hwtstamp) | |
379 | return phydev->drv->hwtstamp(phydev, ifr); | |
380 | /* fall through */ | |
381 | ||
dda93b48 | 382 | default: |
c6d6a511 | 383 | return -EOPNOTSUPP; |
00db8189 | 384 | } |
00db8189 | 385 | } |
680e9fe9 | 386 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 387 | |
b3df0da8 RD |
388 | /** |
389 | * phy_start_aneg - start auto-negotiation for this PHY device | |
390 | * @phydev: the phy_device struct | |
e1393456 | 391 | * |
b3df0da8 RD |
392 | * Description: Sanitizes the settings (if we're not autonegotiating |
393 | * them), and then calls the driver's config_aneg function. | |
394 | * If the PHYCONTROL Layer is operating, we change the state to | |
395 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 AF |
396 | */ |
397 | int phy_start_aneg(struct phy_device *phydev) | |
398 | { | |
399 | int err; | |
400 | ||
35b5f6b1 | 401 | mutex_lock(&phydev->lock); |
e1393456 AF |
402 | |
403 | if (AUTONEG_DISABLE == phydev->autoneg) | |
404 | phy_sanitize_settings(phydev); | |
405 | ||
406 | err = phydev->drv->config_aneg(phydev); | |
e1393456 AF |
407 | if (err < 0) |
408 | goto out_unlock; | |
409 | ||
410 | if (phydev->state != PHY_HALTED) { | |
411 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
412 | phydev->state = PHY_AN; | |
413 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
414 | } else { | |
415 | phydev->state = PHY_FORCING; | |
416 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
417 | } | |
418 | } | |
419 | ||
420 | out_unlock: | |
35b5f6b1 | 421 | mutex_unlock(&phydev->lock); |
e1393456 AF |
422 | return err; |
423 | } | |
424 | EXPORT_SYMBOL(phy_start_aneg); | |
425 | ||
b3df0da8 RD |
426 | /** |
427 | * phy_start_machine - start PHY state machine tracking | |
428 | * @phydev: the phy_device struct | |
00db8189 | 429 | * |
b3df0da8 | 430 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
431 | * which tracks whether the PHY is starting up, negotiating, |
432 | * etc. This function starts the timer which tracks the state | |
29935aeb SS |
433 | * of the PHY. If you want to maintain your own state machine, |
434 | * do not call this function. | |
b3df0da8 | 435 | */ |
29935aeb | 436 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 437 | { |
bbb47bde | 438 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
439 | } |
440 | ||
b3df0da8 RD |
441 | /** |
442 | * phy_stop_machine - stop the PHY state machine tracking | |
443 | * @phydev: target phy_device struct | |
00db8189 | 444 | * |
b3df0da8 | 445 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 446 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
447 | * phy_detach. |
448 | */ | |
449 | void phy_stop_machine(struct phy_device *phydev) | |
450 | { | |
a390d1f3 | 451 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 452 | |
35b5f6b1 | 453 | mutex_lock(&phydev->lock); |
00db8189 AF |
454 | if (phydev->state > PHY_UP) |
455 | phydev->state = PHY_UP; | |
35b5f6b1 | 456 | mutex_unlock(&phydev->lock); |
00db8189 AF |
457 | } |
458 | ||
b3df0da8 RD |
459 | /** |
460 | * phy_error - enter HALTED state for this PHY device | |
461 | * @phydev: target phy_device struct | |
00db8189 AF |
462 | * |
463 | * Moves the PHY to the HALTED state in response to a read | |
464 | * or write error, and tells the controller the link is down. | |
465 | * Must not be called from interrupt context, or while the | |
466 | * phydev->lock is held. | |
467 | */ | |
9b9a8bfc | 468 | static void phy_error(struct phy_device *phydev) |
00db8189 | 469 | { |
35b5f6b1 | 470 | mutex_lock(&phydev->lock); |
00db8189 | 471 | phydev->state = PHY_HALTED; |
35b5f6b1 | 472 | mutex_unlock(&phydev->lock); |
00db8189 AF |
473 | } |
474 | ||
b3df0da8 RD |
475 | /** |
476 | * phy_interrupt - PHY interrupt handler | |
477 | * @irq: interrupt line | |
478 | * @phy_dat: phy_device pointer | |
e1393456 | 479 | * |
b3df0da8 | 480 | * Description: When a PHY interrupt occurs, the handler disables |
e1393456 AF |
481 | * interrupts, and schedules a work task to clear the interrupt. |
482 | */ | |
7d12e780 | 483 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
484 | { |
485 | struct phy_device *phydev = phy_dat; | |
486 | ||
3c3070d7 MR |
487 | if (PHY_HALTED == phydev->state) |
488 | return IRQ_NONE; /* It can't be ours. */ | |
489 | ||
e1393456 AF |
490 | /* The MDIO bus is not allowed to be written in interrupt |
491 | * context, so we need to disable the irq here. A work | |
492 | * queue will write the PHY to disable and clear the | |
2f53e904 SS |
493 | * interrupt, and then reenable the irq line. |
494 | */ | |
e1393456 | 495 | disable_irq_nosync(irq); |
0ac49527 | 496 | atomic_inc(&phydev->irq_disable); |
e1393456 | 497 | |
bbb47bde | 498 | queue_work(system_power_efficient_wq, &phydev->phy_queue); |
e1393456 AF |
499 | |
500 | return IRQ_HANDLED; | |
501 | } | |
502 | ||
b3df0da8 RD |
503 | /** |
504 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
505 | * @phydev: target phy_device struct | |
506 | */ | |
89ff05ec | 507 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 508 | { |
553fe92b | 509 | int err = phy_clear_interrupt(phydev); |
00db8189 | 510 | |
e1393456 AF |
511 | if (err < 0) |
512 | return err; | |
00db8189 | 513 | |
553fe92b | 514 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 515 | } |
00db8189 | 516 | |
b3df0da8 RD |
517 | /** |
518 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
519 | * @phydev: target phy_device struct | |
520 | */ | |
89ff05ec | 521 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
522 | { |
523 | int err; | |
524 | ||
525 | /* Disable PHY interrupts */ | |
526 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
00db8189 AF |
527 | if (err) |
528 | goto phy_err; | |
529 | ||
530 | /* Clear the interrupt */ | |
531 | err = phy_clear_interrupt(phydev); | |
00db8189 AF |
532 | if (err) |
533 | goto phy_err; | |
534 | ||
535 | return 0; | |
536 | ||
537 | phy_err: | |
538 | phy_error(phydev); | |
539 | ||
540 | return err; | |
541 | } | |
e1393456 | 542 | |
b3df0da8 RD |
543 | /** |
544 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
545 | * @phydev: target phy_device struct | |
e1393456 | 546 | * |
b3df0da8 RD |
547 | * Description: Request the interrupt for the given PHY. |
548 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 549 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 550 | * This should only be called with a valid IRQ number. |
b3df0da8 | 551 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
552 | */ |
553 | int phy_start_interrupts(struct phy_device *phydev) | |
554 | { | |
0ac49527 | 555 | atomic_set(&phydev->irq_disable, 0); |
33c133cc SS |
556 | if (request_irq(phydev->irq, phy_interrupt, 0, "phy_interrupt", |
557 | phydev) < 0) { | |
8d242488 JP |
558 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
559 | phydev->bus->name, phydev->irq); | |
e1393456 AF |
560 | phydev->irq = PHY_POLL; |
561 | return 0; | |
562 | } | |
563 | ||
e62a768f | 564 | return phy_enable_interrupts(phydev); |
e1393456 AF |
565 | } |
566 | EXPORT_SYMBOL(phy_start_interrupts); | |
567 | ||
b3df0da8 RD |
568 | /** |
569 | * phy_stop_interrupts - disable interrupts from a PHY device | |
570 | * @phydev: target phy_device struct | |
571 | */ | |
e1393456 AF |
572 | int phy_stop_interrupts(struct phy_device *phydev) |
573 | { | |
553fe92b | 574 | int err = phy_disable_interrupts(phydev); |
e1393456 AF |
575 | |
576 | if (err) | |
577 | phy_error(phydev); | |
578 | ||
0ac49527 MR |
579 | free_irq(phydev->irq, phydev); |
580 | ||
2f53e904 | 581 | /* Cannot call flush_scheduled_work() here as desired because |
0ac49527 MR |
582 | * of rtnl_lock(), but we do not really care about what would |
583 | * be done, except from enable_irq(), so cancel any work | |
584 | * possibly pending and take care of the matter below. | |
3c3070d7 | 585 | */ |
28e53bdd | 586 | cancel_work_sync(&phydev->phy_queue); |
2f53e904 | 587 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
588 | * been left unbalanced from phy_interrupt() and enable_irq() |
589 | * has to be called so that other devices on the line work. | |
590 | */ | |
591 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
592 | enable_irq(phydev->irq); | |
e1393456 AF |
593 | |
594 | return err; | |
595 | } | |
596 | EXPORT_SYMBOL(phy_stop_interrupts); | |
597 | ||
b3df0da8 RD |
598 | /** |
599 | * phy_change - Scheduled by the phy_interrupt/timer to handle PHY changes | |
600 | * @work: work_struct that describes the work to be done | |
601 | */ | |
5ea94e76 | 602 | void phy_change(struct work_struct *work) |
e1393456 | 603 | { |
c4028958 DH |
604 | struct phy_device *phydev = |
605 | container_of(work, struct phy_device, phy_queue); | |
e1393456 | 606 | |
a8729eb3 AG |
607 | if (phydev->drv->did_interrupt && |
608 | !phydev->drv->did_interrupt(phydev)) | |
609 | goto ignore; | |
610 | ||
e62a768f | 611 | if (phy_disable_interrupts(phydev)) |
e1393456 AF |
612 | goto phy_err; |
613 | ||
35b5f6b1 | 614 | mutex_lock(&phydev->lock); |
e1393456 AF |
615 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
616 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 617 | mutex_unlock(&phydev->lock); |
e1393456 | 618 | |
0ac49527 | 619 | atomic_dec(&phydev->irq_disable); |
e1393456 AF |
620 | enable_irq(phydev->irq); |
621 | ||
622 | /* Reenable interrupts */ | |
e62a768f SS |
623 | if (PHY_HALTED != phydev->state && |
624 | phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) | |
e1393456 AF |
625 | goto irq_enable_err; |
626 | ||
a390d1f3 MS |
627 | /* reschedule state queue work to run as soon as possible */ |
628 | cancel_delayed_work_sync(&phydev->state_queue); | |
bbb47bde | 629 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); |
e1393456 AF |
630 | return; |
631 | ||
a8729eb3 AG |
632 | ignore: |
633 | atomic_dec(&phydev->irq_disable); | |
634 | enable_irq(phydev->irq); | |
635 | return; | |
636 | ||
e1393456 AF |
637 | irq_enable_err: |
638 | disable_irq(phydev->irq); | |
0ac49527 | 639 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
640 | phy_err: |
641 | phy_error(phydev); | |
642 | } | |
643 | ||
b3df0da8 RD |
644 | /** |
645 | * phy_stop - Bring down the PHY link, and stop checking the status | |
646 | * @phydev: target phy_device struct | |
647 | */ | |
e1393456 AF |
648 | void phy_stop(struct phy_device *phydev) |
649 | { | |
35b5f6b1 | 650 | mutex_lock(&phydev->lock); |
e1393456 AF |
651 | |
652 | if (PHY_HALTED == phydev->state) | |
653 | goto out_unlock; | |
654 | ||
2c7b4921 | 655 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
656 | /* Disable PHY Interrupts */ |
657 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 658 | |
3c3070d7 MR |
659 | /* Clear any pending interrupts */ |
660 | phy_clear_interrupt(phydev); | |
661 | } | |
e1393456 | 662 | |
6daf6531 MR |
663 | phydev->state = PHY_HALTED; |
664 | ||
e1393456 | 665 | out_unlock: |
35b5f6b1 | 666 | mutex_unlock(&phydev->lock); |
3c3070d7 | 667 | |
2f53e904 | 668 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
669 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
670 | * will not reenable interrupts. | |
671 | */ | |
e1393456 | 672 | } |
2f53e904 | 673 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 674 | |
b3df0da8 RD |
675 | /** |
676 | * phy_start - start or restart a PHY device | |
677 | * @phydev: target phy_device struct | |
e1393456 | 678 | * |
b3df0da8 | 679 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
680 | * handle PHY-related work. Used during startup to start the |
681 | * PHY, and after a call to phy_stop() to resume operation. | |
682 | * Also used to indicate the MDIO bus has cleared an error | |
683 | * condition. | |
684 | */ | |
685 | void phy_start(struct phy_device *phydev) | |
686 | { | |
35b5f6b1 | 687 | mutex_lock(&phydev->lock); |
e1393456 AF |
688 | |
689 | switch (phydev->state) { | |
e109374f FF |
690 | case PHY_STARTING: |
691 | phydev->state = PHY_PENDING; | |
692 | break; | |
693 | case PHY_READY: | |
694 | phydev->state = PHY_UP; | |
695 | break; | |
696 | case PHY_HALTED: | |
697 | phydev->state = PHY_RESUMING; | |
698 | default: | |
699 | break; | |
e1393456 | 700 | } |
35b5f6b1 | 701 | mutex_unlock(&phydev->lock); |
e1393456 | 702 | } |
e1393456 | 703 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 704 | |
35b5f6b1 NC |
705 | /** |
706 | * phy_state_machine - Handle the state machine | |
707 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 708 | */ |
4f9c85a1 | 709 | void phy_state_machine(struct work_struct *work) |
00db8189 | 710 | { |
bf6aede7 | 711 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 712 | struct phy_device *phydev = |
a390d1f3 | 713 | container_of(dwork, struct phy_device, state_queue); |
be9dad1f | 714 | int needs_aneg = 0, do_suspend = 0; |
00db8189 AF |
715 | int err = 0; |
716 | ||
35b5f6b1 | 717 | mutex_lock(&phydev->lock); |
00db8189 | 718 | |
e109374f FF |
719 | switch (phydev->state) { |
720 | case PHY_DOWN: | |
721 | case PHY_STARTING: | |
722 | case PHY_READY: | |
723 | case PHY_PENDING: | |
724 | break; | |
725 | case PHY_UP: | |
726 | needs_aneg = 1; | |
00db8189 | 727 | |
e109374f FF |
728 | phydev->link_timeout = PHY_AN_TIMEOUT; |
729 | ||
730 | break; | |
731 | case PHY_AN: | |
732 | err = phy_read_status(phydev); | |
e109374f | 733 | if (err < 0) |
00db8189 | 734 | break; |
6b655529 | 735 | |
2f53e904 | 736 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
737 | if (!phydev->link) { |
738 | phydev->state = PHY_NOLINK; | |
739 | netif_carrier_off(phydev->attached_dev); | |
740 | phydev->adjust_link(phydev->attached_dev); | |
741 | break; | |
742 | } | |
6b655529 | 743 | |
2f53e904 | 744 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
745 | err = phy_aneg_done(phydev); |
746 | if (err < 0) | |
747 | break; | |
6b655529 | 748 | |
e109374f FF |
749 | /* If AN is done, we're running */ |
750 | if (err > 0) { | |
751 | phydev->state = PHY_RUNNING; | |
752 | netif_carrier_on(phydev->attached_dev); | |
753 | phydev->adjust_link(phydev->attached_dev); | |
00db8189 | 754 | |
e109374f FF |
755 | } else if (0 == phydev->link_timeout--) { |
756 | needs_aneg = 1; | |
2f53e904 | 757 | /* If we have the magic_aneg bit, we try again */ |
e109374f FF |
758 | if (phydev->drv->flags & PHY_HAS_MAGICANEG) |
759 | break; | |
760 | } | |
761 | break; | |
762 | case PHY_NOLINK: | |
763 | err = phy_read_status(phydev); | |
e109374f | 764 | if (err) |
00db8189 | 765 | break; |
00db8189 | 766 | |
e109374f FF |
767 | if (phydev->link) { |
768 | phydev->state = PHY_RUNNING; | |
769 | netif_carrier_on(phydev->attached_dev); | |
770 | phydev->adjust_link(phydev->attached_dev); | |
771 | } | |
772 | break; | |
773 | case PHY_FORCING: | |
774 | err = genphy_update_link(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 | if (0 == phydev->link_timeout--) | |
783 | needs_aneg = 1; | |
784 | } | |
00db8189 | 785 | |
e109374f FF |
786 | phydev->adjust_link(phydev->attached_dev); |
787 | break; | |
788 | case PHY_RUNNING: | |
789 | /* Only register a CHANGE if we are | |
790 | * polling or ignoring interrupts | |
791 | */ | |
792 | if (!phy_interrupt_is_valid(phydev)) | |
793 | phydev->state = PHY_CHANGELINK; | |
794 | break; | |
795 | case PHY_CHANGELINK: | |
796 | err = phy_read_status(phydev); | |
e109374f | 797 | if (err) |
00db8189 | 798 | break; |
00db8189 | 799 | |
e109374f FF |
800 | if (phydev->link) { |
801 | phydev->state = PHY_RUNNING; | |
802 | netif_carrier_on(phydev->attached_dev); | |
803 | } else { | |
804 | phydev->state = PHY_NOLINK; | |
805 | netif_carrier_off(phydev->attached_dev); | |
806 | } | |
00db8189 | 807 | |
e109374f | 808 | phydev->adjust_link(phydev->attached_dev); |
00db8189 | 809 | |
e109374f FF |
810 | if (phy_interrupt_is_valid(phydev)) |
811 | err = phy_config_interrupt(phydev, | |
2f53e904 | 812 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
813 | break; |
814 | case PHY_HALTED: | |
815 | if (phydev->link) { | |
816 | phydev->link = 0; | |
817 | netif_carrier_off(phydev->attached_dev); | |
00db8189 | 818 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
819 | do_suspend = 1; |
820 | } | |
821 | break; | |
822 | case PHY_RESUMING: | |
e109374f | 823 | err = phy_clear_interrupt(phydev); |
e109374f FF |
824 | if (err) |
825 | break; | |
00db8189 | 826 | |
2f53e904 | 827 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
e109374f FF |
828 | if (err) |
829 | break; | |
00db8189 | 830 | |
e109374f FF |
831 | if (AUTONEG_ENABLE == phydev->autoneg) { |
832 | err = phy_aneg_done(phydev); | |
833 | if (err < 0) | |
00db8189 AF |
834 | break; |
835 | ||
e109374f | 836 | /* err > 0 if AN is done. |
2f53e904 SS |
837 | * Otherwise, it's 0, and we're still waiting for AN |
838 | */ | |
e109374f | 839 | if (err > 0) { |
42caa074 WF |
840 | err = phy_read_status(phydev); |
841 | if (err) | |
842 | break; | |
843 | ||
844 | if (phydev->link) { | |
845 | phydev->state = PHY_RUNNING; | |
846 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 847 | } else { |
42caa074 | 848 | phydev->state = PHY_NOLINK; |
2f53e904 | 849 | } |
42caa074 | 850 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
851 | } else { |
852 | phydev->state = PHY_AN; | |
853 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 854 | } |
e109374f FF |
855 | } else { |
856 | err = phy_read_status(phydev); | |
857 | if (err) | |
858 | break; | |
859 | ||
860 | if (phydev->link) { | |
861 | phydev->state = PHY_RUNNING; | |
862 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 863 | } else { |
e109374f | 864 | phydev->state = PHY_NOLINK; |
2f53e904 | 865 | } |
e109374f FF |
866 | phydev->adjust_link(phydev->attached_dev); |
867 | } | |
868 | break; | |
00db8189 AF |
869 | } |
870 | ||
35b5f6b1 | 871 | mutex_unlock(&phydev->lock); |
00db8189 AF |
872 | |
873 | if (needs_aneg) | |
874 | err = phy_start_aneg(phydev); | |
875 | ||
be9dad1f SH |
876 | if (do_suspend) |
877 | phy_suspend(phydev); | |
878 | ||
00db8189 AF |
879 | if (err < 0) |
880 | phy_error(phydev); | |
881 | ||
bbb47bde | 882 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, |
2f53e904 | 883 | PHY_STATE_TIME * HZ); |
35b5f6b1 | 884 | } |
a59a4d19 | 885 | |
5ea94e76 FF |
886 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
887 | { | |
888 | cancel_work_sync(&phydev->phy_queue); | |
889 | phydev->link = new_link; | |
890 | schedule_work(&phydev->phy_queue); | |
891 | } | |
892 | EXPORT_SYMBOL(phy_mac_interrupt); | |
893 | ||
a59a4d19 GC |
894 | static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad, |
895 | int addr) | |
896 | { | |
897 | /* Write the desired MMD Devad */ | |
898 | bus->write(bus, addr, MII_MMD_CTRL, devad); | |
899 | ||
900 | /* Write the desired MMD register address */ | |
901 | bus->write(bus, addr, MII_MMD_DATA, prtad); | |
902 | ||
903 | /* Select the Function : DATA with no post increment */ | |
904 | bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
905 | } | |
906 | ||
907 | /** | |
908 | * phy_read_mmd_indirect - reads data from the MMD registers | |
909 | * @bus: the target MII bus | |
910 | * @prtad: MMD Address | |
911 | * @devad: MMD DEVAD | |
912 | * @addr: PHY address on the MII bus | |
913 | * | |
914 | * Description: it reads data from the MMD registers (clause 22 to access to | |
915 | * clause 45) of the specified phy address. | |
916 | * To read these register we have: | |
917 | * 1) Write reg 13 // DEVAD | |
918 | * 2) Write reg 14 // MMD Address | |
919 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
920 | * 3) Read reg 14 // Read MMD data | |
921 | */ | |
922 | static int phy_read_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
923 | int addr) | |
924 | { | |
a59a4d19 GC |
925 | mmd_phy_indirect(bus, prtad, devad, addr); |
926 | ||
927 | /* Read the content of the MMD's selected register */ | |
e62a768f | 928 | return bus->read(bus, addr, MII_MMD_DATA); |
a59a4d19 GC |
929 | } |
930 | ||
931 | /** | |
932 | * phy_write_mmd_indirect - writes data to the MMD registers | |
933 | * @bus: the target MII bus | |
934 | * @prtad: MMD Address | |
935 | * @devad: MMD DEVAD | |
936 | * @addr: PHY address on the MII bus | |
937 | * @data: data to write in the MMD register | |
938 | * | |
939 | * Description: Write data from the MMD registers of the specified | |
940 | * phy address. | |
941 | * To write these register we have: | |
942 | * 1) Write reg 13 // DEVAD | |
943 | * 2) Write reg 14 // MMD Address | |
944 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
945 | * 3) Write reg 14 // Write MMD data | |
946 | */ | |
947 | static void phy_write_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
948 | int addr, u32 data) | |
949 | { | |
950 | mmd_phy_indirect(bus, prtad, devad, addr); | |
951 | ||
952 | /* Write the data into MMD's selected register */ | |
953 | bus->write(bus, addr, MII_MMD_DATA, data); | |
954 | } | |
955 | ||
a59a4d19 GC |
956 | /** |
957 | * phy_init_eee - init and check the EEE feature | |
958 | * @phydev: target phy_device struct | |
959 | * @clk_stop_enable: PHY may stop the clock during LPI | |
960 | * | |
961 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
962 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
963 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
964 | * bit if required. | |
965 | */ | |
966 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
967 | { | |
a59a4d19 GC |
968 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
969 | * Also EEE feature is active when core is operating with MII, GMII | |
970 | * or RGMII. | |
971 | */ | |
972 | if ((phydev->duplex == DUPLEX_FULL) && | |
973 | ((phydev->interface == PHY_INTERFACE_MODE_MII) || | |
974 | (phydev->interface == PHY_INTERFACE_MODE_GMII) || | |
975 | (phydev->interface == PHY_INTERFACE_MODE_RGMII))) { | |
976 | int eee_lp, eee_cap, eee_adv; | |
977 | u32 lp, cap, adv; | |
978 | int idx, status; | |
979 | ||
980 | /* Read phy status to properly get the right settings */ | |
981 | status = phy_read_status(phydev); | |
982 | if (status) | |
983 | return status; | |
984 | ||
985 | /* First check if the EEE ability is supported */ | |
986 | eee_cap = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
987 | MDIO_MMD_PCS, phydev->addr); | |
988 | if (eee_cap < 0) | |
989 | return eee_cap; | |
990 | ||
b32607dd | 991 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 992 | if (!cap) |
e62a768f | 993 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
994 | |
995 | /* Check which link settings negotiated and verify it in | |
996 | * the EEE advertising registers. | |
997 | */ | |
998 | eee_lp = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
999 | MDIO_MMD_AN, phydev->addr); | |
1000 | if (eee_lp < 0) | |
1001 | return eee_lp; | |
1002 | ||
1003 | eee_adv = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1004 | MDIO_MMD_AN, phydev->addr); | |
1005 | if (eee_adv < 0) | |
1006 | return eee_adv; | |
1007 | ||
b32607dd AB |
1008 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
1009 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
a59a4d19 | 1010 | idx = phy_find_setting(phydev->speed, phydev->duplex); |
9a9c56cb | 1011 | if (!(lp & adv & settings[idx].setting)) |
e62a768f | 1012 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1013 | |
1014 | if (clk_stop_enable) { | |
1015 | /* Configure the PHY to stop receiving xMII | |
1016 | * clock while it is signaling LPI. | |
1017 | */ | |
1018 | int val = phy_read_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1019 | MDIO_MMD_PCS, | |
1020 | phydev->addr); | |
1021 | if (val < 0) | |
1022 | return val; | |
1023 | ||
1024 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
1025 | phy_write_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1026 | MDIO_MMD_PCS, phydev->addr, val); | |
1027 | } | |
1028 | ||
e62a768f | 1029 | return 0; /* EEE supported */ |
a59a4d19 GC |
1030 | } |
1031 | ||
e62a768f | 1032 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1033 | } |
1034 | EXPORT_SYMBOL(phy_init_eee); | |
1035 | ||
1036 | /** | |
1037 | * phy_get_eee_err - report the EEE wake error count | |
1038 | * @phydev: target phy_device struct | |
1039 | * | |
1040 | * Description: it is to report the number of time where the PHY | |
1041 | * failed to complete its normal wake sequence. | |
1042 | */ | |
1043 | int phy_get_eee_err(struct phy_device *phydev) | |
1044 | { | |
1045 | return phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_WK_ERR, | |
1046 | MDIO_MMD_PCS, phydev->addr); | |
a59a4d19 GC |
1047 | } |
1048 | EXPORT_SYMBOL(phy_get_eee_err); | |
1049 | ||
1050 | /** | |
1051 | * phy_ethtool_get_eee - get EEE supported and status | |
1052 | * @phydev: target phy_device struct | |
1053 | * @data: ethtool_eee data | |
1054 | * | |
1055 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1056 | * capabilities. | |
1057 | */ | |
1058 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1059 | { | |
1060 | int val; | |
1061 | ||
1062 | /* Get Supported EEE */ | |
1063 | val = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
1064 | MDIO_MMD_PCS, phydev->addr); | |
1065 | if (val < 0) | |
1066 | return val; | |
b32607dd | 1067 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1068 | |
1069 | /* Get advertisement EEE */ | |
1070 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1071 | MDIO_MMD_AN, phydev->addr); | |
1072 | if (val < 0) | |
1073 | return val; | |
b32607dd | 1074 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1075 | |
1076 | /* Get LP advertisement EEE */ | |
1077 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
1078 | MDIO_MMD_AN, phydev->addr); | |
1079 | if (val < 0) | |
1080 | return val; | |
b32607dd | 1081 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1082 | |
1083 | return 0; | |
1084 | } | |
1085 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1086 | ||
1087 | /** | |
1088 | * phy_ethtool_set_eee - set EEE supported and status | |
1089 | * @phydev: target phy_device struct | |
1090 | * @data: ethtool_eee data | |
1091 | * | |
1092 | * Description: it is to program the Advertisement EEE register. | |
1093 | */ | |
1094 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1095 | { | |
553fe92b | 1096 | int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised); |
a59a4d19 | 1097 | |
a59a4d19 GC |
1098 | phy_write_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, MDIO_MMD_AN, |
1099 | phydev->addr, val); | |
1100 | ||
1101 | return 0; | |
1102 | } | |
1103 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1104 | |
1105 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1106 | { | |
1107 | if (phydev->drv->set_wol) | |
1108 | return phydev->drv->set_wol(phydev, wol); | |
1109 | ||
1110 | return -EOPNOTSUPP; | |
1111 | } | |
1112 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1113 | ||
1114 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1115 | { | |
1116 | if (phydev->drv->get_wol) | |
1117 | phydev->drv->get_wol(phydev, wol); | |
1118 | } | |
1119 | EXPORT_SYMBOL(phy_ethtool_get_wol); |