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 | |
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 | * | |
ad033506 | 86 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 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 | * | |
ad033506 | 101 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 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 | * |
76a423a3 FF |
117 | * Description: Return the auto-negotiation status from this @phydev |
118 | * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation | |
119 | * is still pending. | |
00db8189 AF |
120 | */ |
121 | static inline int phy_aneg_done(struct phy_device *phydev) | |
122 | { | |
76a423a3 FF |
123 | if (phydev->drv->aneg_done) |
124 | return phydev->drv->aneg_done(phydev); | |
125 | ||
a9fa6e6a | 126 | return genphy_aneg_done(phydev); |
00db8189 AF |
127 | } |
128 | ||
00db8189 | 129 | /* A structure for mapping a particular speed and duplex |
2f53e904 SS |
130 | * combination to a particular SUPPORTED and ADVERTISED value |
131 | */ | |
00db8189 AF |
132 | struct phy_setting { |
133 | int speed; | |
134 | int duplex; | |
135 | u32 setting; | |
136 | }; | |
137 | ||
138 | /* A mapping of all SUPPORTED settings to speed/duplex */ | |
f71e1309 | 139 | static const struct phy_setting settings[] = { |
00db8189 AF |
140 | { |
141 | .speed = 10000, | |
142 | .duplex = DUPLEX_FULL, | |
143 | .setting = SUPPORTED_10000baseT_Full, | |
144 | }, | |
145 | { | |
146 | .speed = SPEED_1000, | |
147 | .duplex = DUPLEX_FULL, | |
148 | .setting = SUPPORTED_1000baseT_Full, | |
149 | }, | |
150 | { | |
151 | .speed = SPEED_1000, | |
152 | .duplex = DUPLEX_HALF, | |
153 | .setting = SUPPORTED_1000baseT_Half, | |
154 | }, | |
155 | { | |
156 | .speed = SPEED_100, | |
157 | .duplex = DUPLEX_FULL, | |
158 | .setting = SUPPORTED_100baseT_Full, | |
159 | }, | |
160 | { | |
161 | .speed = SPEED_100, | |
162 | .duplex = DUPLEX_HALF, | |
163 | .setting = SUPPORTED_100baseT_Half, | |
164 | }, | |
165 | { | |
166 | .speed = SPEED_10, | |
167 | .duplex = DUPLEX_FULL, | |
168 | .setting = SUPPORTED_10baseT_Full, | |
169 | }, | |
170 | { | |
171 | .speed = SPEED_10, | |
172 | .duplex = DUPLEX_HALF, | |
173 | .setting = SUPPORTED_10baseT_Half, | |
174 | }, | |
175 | }; | |
176 | ||
ff8ac609 | 177 | #define MAX_NUM_SETTINGS ARRAY_SIZE(settings) |
00db8189 | 178 | |
b3df0da8 RD |
179 | /** |
180 | * phy_find_setting - find a PHY settings array entry that matches speed & duplex | |
181 | * @speed: speed to match | |
182 | * @duplex: duplex to match | |
00db8189 | 183 | * |
b3df0da8 | 184 | * Description: Searches the settings array for the setting which |
00db8189 AF |
185 | * matches the desired speed and duplex, and returns the index |
186 | * of that setting. Returns the index of the last setting if | |
187 | * none of the others match. | |
188 | */ | |
4ae6e50c | 189 | static inline unsigned int phy_find_setting(int speed, int duplex) |
00db8189 | 190 | { |
4ae6e50c | 191 | unsigned int idx = 0; |
00db8189 AF |
192 | |
193 | while (idx < ARRAY_SIZE(settings) && | |
2f53e904 | 194 | (settings[idx].speed != speed || settings[idx].duplex != duplex)) |
00db8189 AF |
195 | idx++; |
196 | ||
197 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
198 | } | |
199 | ||
b3df0da8 RD |
200 | /** |
201 | * phy_find_valid - find a PHY setting that matches the requested features mask | |
202 | * @idx: The first index in settings[] to search | |
203 | * @features: A mask of the valid settings | |
00db8189 | 204 | * |
b3df0da8 | 205 | * Description: Returns the index of the first valid setting less |
00db8189 AF |
206 | * than or equal to the one pointed to by idx, as determined by |
207 | * the mask in features. Returns the index of the last setting | |
208 | * if nothing else matches. | |
209 | */ | |
4ae6e50c | 210 | static inline unsigned int phy_find_valid(unsigned int idx, u32 features) |
00db8189 AF |
211 | { |
212 | while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) | |
213 | idx++; | |
214 | ||
215 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
216 | } | |
217 | ||
b3df0da8 RD |
218 | /** |
219 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
220 | * @phydev: the target phy_device struct | |
00db8189 | 221 | * |
b3df0da8 | 222 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 223 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 224 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 225 | */ |
89ff05ec | 226 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 AF |
227 | { |
228 | u32 features = phydev->supported; | |
4ae6e50c | 229 | unsigned int idx; |
00db8189 AF |
230 | |
231 | /* Sanitize settings based on PHY capabilities */ | |
232 | if ((features & SUPPORTED_Autoneg) == 0) | |
163642a2 | 233 | phydev->autoneg = AUTONEG_DISABLE; |
00db8189 AF |
234 | |
235 | idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), | |
236 | features); | |
237 | ||
238 | phydev->speed = settings[idx].speed; | |
239 | phydev->duplex = settings[idx].duplex; | |
240 | } | |
00db8189 | 241 | |
b3df0da8 RD |
242 | /** |
243 | * phy_ethtool_sset - generic ethtool sset function, handles all the details | |
244 | * @phydev: target phy_device struct | |
245 | * @cmd: ethtool_cmd | |
00db8189 AF |
246 | * |
247 | * A few notes about parameter checking: | |
248 | * - We don't set port or transceiver, so we don't care what they | |
249 | * were set to. | |
250 | * - phy_start_aneg() will make sure forced settings are sane, and | |
251 | * choose the next best ones from the ones selected, so we don't | |
b3df0da8 | 252 | * care if ethtool tries to give us bad values. |
00db8189 AF |
253 | */ |
254 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
255 | { | |
25db0338 DD |
256 | u32 speed = ethtool_cmd_speed(cmd); |
257 | ||
00db8189 AF |
258 | if (cmd->phy_address != phydev->addr) |
259 | return -EINVAL; | |
260 | ||
2f53e904 | 261 | /* We make sure that we don't pass unsupported values in to the PHY */ |
00db8189 AF |
262 | cmd->advertising &= phydev->supported; |
263 | ||
264 | /* Verify the settings we care about. */ | |
265 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
266 | return -EINVAL; | |
267 | ||
268 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
269 | return -EINVAL; | |
270 | ||
8e95a202 | 271 | if (cmd->autoneg == AUTONEG_DISABLE && |
25db0338 DD |
272 | ((speed != SPEED_1000 && |
273 | speed != SPEED_100 && | |
274 | speed != SPEED_10) || | |
8e95a202 JP |
275 | (cmd->duplex != DUPLEX_HALF && |
276 | cmd->duplex != DUPLEX_FULL))) | |
00db8189 AF |
277 | return -EINVAL; |
278 | ||
279 | phydev->autoneg = cmd->autoneg; | |
280 | ||
25db0338 | 281 | phydev->speed = speed; |
00db8189 AF |
282 | |
283 | phydev->advertising = cmd->advertising; | |
284 | ||
285 | if (AUTONEG_ENABLE == cmd->autoneg) | |
286 | phydev->advertising |= ADVERTISED_Autoneg; | |
287 | else | |
288 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
289 | ||
290 | phydev->duplex = cmd->duplex; | |
291 | ||
292 | /* Restart the PHY */ | |
293 | phy_start_aneg(phydev); | |
294 | ||
295 | return 0; | |
296 | } | |
9f6d55d0 | 297 | EXPORT_SYMBOL(phy_ethtool_sset); |
00db8189 AF |
298 | |
299 | int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
300 | { | |
301 | cmd->supported = phydev->supported; | |
302 | ||
303 | cmd->advertising = phydev->advertising; | |
114002bc | 304 | cmd->lp_advertising = phydev->lp_advertising; |
00db8189 | 305 | |
70739497 | 306 | ethtool_cmd_speed_set(cmd, phydev->speed); |
00db8189 | 307 | cmd->duplex = phydev->duplex; |
c88838ce FF |
308 | if (phydev->interface == PHY_INTERFACE_MODE_MOCA) |
309 | cmd->port = PORT_BNC; | |
310 | else | |
311 | cmd->port = PORT_MII; | |
00db8189 | 312 | cmd->phy_address = phydev->addr; |
4284b6a5 FF |
313 | cmd->transceiver = phy_is_internal(phydev) ? |
314 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
00db8189 AF |
315 | cmd->autoneg = phydev->autoneg; |
316 | ||
317 | return 0; | |
318 | } | |
9f6d55d0 | 319 | EXPORT_SYMBOL(phy_ethtool_gset); |
00db8189 | 320 | |
b3df0da8 RD |
321 | /** |
322 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
323 | * @phydev: the phy_device struct | |
00c7d920 | 324 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
325 | * @cmd: ioctl cmd to execute |
326 | * | |
327 | * Note that this function is currently incompatible with the | |
00db8189 | 328 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 329 | * current state. Use at own risk. |
00db8189 | 330 | */ |
2f53e904 | 331 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 332 | { |
28b04113 | 333 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 AF |
334 | u16 val = mii_data->val_in; |
335 | ||
336 | switch (cmd) { | |
337 | case SIOCGMIIPHY: | |
338 | mii_data->phy_id = phydev->addr; | |
c6d6a511 LB |
339 | /* fall through */ |
340 | ||
00db8189 | 341 | case SIOCGMIIREG: |
af1dc13e PK |
342 | mii_data->val_out = mdiobus_read(phydev->bus, mii_data->phy_id, |
343 | mii_data->reg_num); | |
e62a768f | 344 | return 0; |
00db8189 AF |
345 | |
346 | case SIOCSMIIREG: | |
00db8189 | 347 | if (mii_data->phy_id == phydev->addr) { |
e109374f | 348 | switch (mii_data->reg_num) { |
00db8189 | 349 | case MII_BMCR: |
2f53e904 | 350 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) |
00db8189 AF |
351 | phydev->autoneg = AUTONEG_DISABLE; |
352 | else | |
353 | phydev->autoneg = AUTONEG_ENABLE; | |
2f53e904 | 354 | if (!phydev->autoneg && (val & BMCR_FULLDPLX)) |
00db8189 AF |
355 | phydev->duplex = DUPLEX_FULL; |
356 | else | |
357 | phydev->duplex = DUPLEX_HALF; | |
2f53e904 | 358 | if (!phydev->autoneg && (val & BMCR_SPEED1000)) |
024a0a3c | 359 | phydev->speed = SPEED_1000; |
2f53e904 SS |
360 | else if (!phydev->autoneg && |
361 | (val & BMCR_SPEED100)) | |
024a0a3c | 362 | phydev->speed = SPEED_100; |
00db8189 AF |
363 | break; |
364 | case MII_ADVERTISE: | |
365 | phydev->advertising = val; | |
366 | break; | |
367 | default: | |
368 | /* do nothing */ | |
369 | break; | |
370 | } | |
371 | } | |
372 | ||
af1dc13e PK |
373 | mdiobus_write(phydev->bus, mii_data->phy_id, |
374 | mii_data->reg_num, val); | |
375 | ||
8e95a202 | 376 | if (mii_data->reg_num == MII_BMCR && |
2613f95f | 377 | val & BMCR_RESET) |
e62a768f SS |
378 | return phy_init_hw(phydev); |
379 | return 0; | |
dda93b48 | 380 | |
c1f19b51 RC |
381 | case SIOCSHWTSTAMP: |
382 | if (phydev->drv->hwtstamp) | |
383 | return phydev->drv->hwtstamp(phydev, ifr); | |
384 | /* fall through */ | |
385 | ||
dda93b48 | 386 | default: |
c6d6a511 | 387 | return -EOPNOTSUPP; |
00db8189 | 388 | } |
00db8189 | 389 | } |
680e9fe9 | 390 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 391 | |
b3df0da8 RD |
392 | /** |
393 | * phy_start_aneg - start auto-negotiation for this PHY device | |
394 | * @phydev: the phy_device struct | |
e1393456 | 395 | * |
b3df0da8 RD |
396 | * Description: Sanitizes the settings (if we're not autonegotiating |
397 | * them), and then calls the driver's config_aneg function. | |
398 | * If the PHYCONTROL Layer is operating, we change the state to | |
399 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 AF |
400 | */ |
401 | int phy_start_aneg(struct phy_device *phydev) | |
402 | { | |
403 | int err; | |
404 | ||
35b5f6b1 | 405 | mutex_lock(&phydev->lock); |
e1393456 AF |
406 | |
407 | if (AUTONEG_DISABLE == phydev->autoneg) | |
408 | phy_sanitize_settings(phydev); | |
409 | ||
410 | err = phydev->drv->config_aneg(phydev); | |
e1393456 AF |
411 | if (err < 0) |
412 | goto out_unlock; | |
413 | ||
414 | if (phydev->state != PHY_HALTED) { | |
415 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
416 | phydev->state = PHY_AN; | |
417 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
418 | } else { | |
419 | phydev->state = PHY_FORCING; | |
420 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
421 | } | |
422 | } | |
423 | ||
424 | out_unlock: | |
35b5f6b1 | 425 | mutex_unlock(&phydev->lock); |
e1393456 AF |
426 | return err; |
427 | } | |
428 | EXPORT_SYMBOL(phy_start_aneg); | |
429 | ||
b3df0da8 RD |
430 | /** |
431 | * phy_start_machine - start PHY state machine tracking | |
432 | * @phydev: the phy_device struct | |
00db8189 | 433 | * |
b3df0da8 | 434 | * Description: The PHY infrastructure can run a state machine |
00db8189 AF |
435 | * which tracks whether the PHY is starting up, negotiating, |
436 | * etc. This function starts the timer which tracks the state | |
29935aeb SS |
437 | * of the PHY. If you want to maintain your own state machine, |
438 | * do not call this function. | |
b3df0da8 | 439 | */ |
29935aeb | 440 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 441 | { |
bbb47bde | 442 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, HZ); |
00db8189 AF |
443 | } |
444 | ||
b3df0da8 RD |
445 | /** |
446 | * phy_stop_machine - stop the PHY state machine tracking | |
447 | * @phydev: target phy_device struct | |
00db8189 | 448 | * |
b3df0da8 | 449 | * Description: Stops the state machine timer, sets the state to UP |
817acf5e | 450 | * (unless it wasn't up yet). This function must be called BEFORE |
00db8189 AF |
451 | * phy_detach. |
452 | */ | |
453 | void phy_stop_machine(struct phy_device *phydev) | |
454 | { | |
a390d1f3 | 455 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 456 | |
35b5f6b1 | 457 | mutex_lock(&phydev->lock); |
00db8189 AF |
458 | if (phydev->state > PHY_UP) |
459 | phydev->state = PHY_UP; | |
35b5f6b1 | 460 | mutex_unlock(&phydev->lock); |
00db8189 AF |
461 | } |
462 | ||
b3df0da8 RD |
463 | /** |
464 | * phy_error - enter HALTED state for this PHY device | |
465 | * @phydev: target phy_device struct | |
00db8189 AF |
466 | * |
467 | * Moves the PHY to the HALTED state in response to a read | |
468 | * or write error, and tells the controller the link is down. | |
469 | * Must not be called from interrupt context, or while the | |
470 | * phydev->lock is held. | |
471 | */ | |
9b9a8bfc | 472 | static void phy_error(struct phy_device *phydev) |
00db8189 | 473 | { |
35b5f6b1 | 474 | mutex_lock(&phydev->lock); |
00db8189 | 475 | phydev->state = PHY_HALTED; |
35b5f6b1 | 476 | mutex_unlock(&phydev->lock); |
00db8189 AF |
477 | } |
478 | ||
b3df0da8 RD |
479 | /** |
480 | * phy_interrupt - PHY interrupt handler | |
481 | * @irq: interrupt line | |
482 | * @phy_dat: phy_device pointer | |
e1393456 | 483 | * |
b3df0da8 | 484 | * Description: When a PHY interrupt occurs, the handler disables |
e1393456 AF |
485 | * interrupts, and schedules a work task to clear the interrupt. |
486 | */ | |
7d12e780 | 487 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
e1393456 AF |
488 | { |
489 | struct phy_device *phydev = phy_dat; | |
490 | ||
3c3070d7 MR |
491 | if (PHY_HALTED == phydev->state) |
492 | return IRQ_NONE; /* It can't be ours. */ | |
493 | ||
e1393456 AF |
494 | /* The MDIO bus is not allowed to be written in interrupt |
495 | * context, so we need to disable the irq here. A work | |
496 | * queue will write the PHY to disable and clear the | |
2f53e904 SS |
497 | * interrupt, and then reenable the irq line. |
498 | */ | |
e1393456 | 499 | disable_irq_nosync(irq); |
0ac49527 | 500 | atomic_inc(&phydev->irq_disable); |
e1393456 | 501 | |
bbb47bde | 502 | queue_work(system_power_efficient_wq, &phydev->phy_queue); |
e1393456 AF |
503 | |
504 | return IRQ_HANDLED; | |
505 | } | |
506 | ||
b3df0da8 RD |
507 | /** |
508 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
509 | * @phydev: target phy_device struct | |
510 | */ | |
89ff05ec | 511 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 512 | { |
553fe92b | 513 | int err = phy_clear_interrupt(phydev); |
00db8189 | 514 | |
e1393456 AF |
515 | if (err < 0) |
516 | return err; | |
00db8189 | 517 | |
553fe92b | 518 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 519 | } |
00db8189 | 520 | |
b3df0da8 RD |
521 | /** |
522 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
523 | * @phydev: target phy_device struct | |
524 | */ | |
89ff05ec | 525 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
526 | { |
527 | int err; | |
528 | ||
529 | /* Disable PHY interrupts */ | |
530 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
00db8189 AF |
531 | if (err) |
532 | goto phy_err; | |
533 | ||
534 | /* Clear the interrupt */ | |
535 | err = phy_clear_interrupt(phydev); | |
00db8189 AF |
536 | if (err) |
537 | goto phy_err; | |
538 | ||
539 | return 0; | |
540 | ||
541 | phy_err: | |
542 | phy_error(phydev); | |
543 | ||
544 | return err; | |
545 | } | |
e1393456 | 546 | |
b3df0da8 RD |
547 | /** |
548 | * phy_start_interrupts - request and enable interrupts for a PHY device | |
549 | * @phydev: target phy_device struct | |
e1393456 | 550 | * |
b3df0da8 RD |
551 | * Description: Request the interrupt for the given PHY. |
552 | * If this fails, then we set irq to PHY_POLL. | |
e1393456 | 553 | * Otherwise, we enable the interrupts in the PHY. |
e1393456 | 554 | * This should only be called with a valid IRQ number. |
b3df0da8 | 555 | * Returns 0 on success or < 0 on error. |
e1393456 AF |
556 | */ |
557 | int phy_start_interrupts(struct phy_device *phydev) | |
558 | { | |
0ac49527 | 559 | atomic_set(&phydev->irq_disable, 0); |
33c133cc SS |
560 | if (request_irq(phydev->irq, phy_interrupt, 0, "phy_interrupt", |
561 | phydev) < 0) { | |
8d242488 JP |
562 | pr_warn("%s: Can't get IRQ %d (PHY)\n", |
563 | phydev->bus->name, phydev->irq); | |
e1393456 AF |
564 | phydev->irq = PHY_POLL; |
565 | return 0; | |
566 | } | |
567 | ||
e62a768f | 568 | return phy_enable_interrupts(phydev); |
e1393456 AF |
569 | } |
570 | EXPORT_SYMBOL(phy_start_interrupts); | |
571 | ||
b3df0da8 RD |
572 | /** |
573 | * phy_stop_interrupts - disable interrupts from a PHY device | |
574 | * @phydev: target phy_device struct | |
575 | */ | |
e1393456 AF |
576 | int phy_stop_interrupts(struct phy_device *phydev) |
577 | { | |
553fe92b | 578 | int err = phy_disable_interrupts(phydev); |
e1393456 AF |
579 | |
580 | if (err) | |
581 | phy_error(phydev); | |
582 | ||
0ac49527 MR |
583 | free_irq(phydev->irq, phydev); |
584 | ||
2f53e904 | 585 | /* Cannot call flush_scheduled_work() here as desired because |
0ac49527 MR |
586 | * of rtnl_lock(), but we do not really care about what would |
587 | * be done, except from enable_irq(), so cancel any work | |
588 | * possibly pending and take care of the matter below. | |
3c3070d7 | 589 | */ |
28e53bdd | 590 | cancel_work_sync(&phydev->phy_queue); |
2f53e904 | 591 | /* If work indeed has been cancelled, disable_irq() will have |
0ac49527 MR |
592 | * been left unbalanced from phy_interrupt() and enable_irq() |
593 | * has to be called so that other devices on the line work. | |
594 | */ | |
595 | while (atomic_dec_return(&phydev->irq_disable) >= 0) | |
596 | enable_irq(phydev->irq); | |
e1393456 AF |
597 | |
598 | return err; | |
599 | } | |
600 | EXPORT_SYMBOL(phy_stop_interrupts); | |
601 | ||
b3df0da8 RD |
602 | /** |
603 | * phy_change - Scheduled by the phy_interrupt/timer to handle PHY changes | |
604 | * @work: work_struct that describes the work to be done | |
605 | */ | |
5ea94e76 | 606 | void phy_change(struct work_struct *work) |
e1393456 | 607 | { |
c4028958 DH |
608 | struct phy_device *phydev = |
609 | container_of(work, struct phy_device, phy_queue); | |
e1393456 | 610 | |
a8729eb3 AG |
611 | if (phydev->drv->did_interrupt && |
612 | !phydev->drv->did_interrupt(phydev)) | |
613 | goto ignore; | |
614 | ||
e62a768f | 615 | if (phy_disable_interrupts(phydev)) |
e1393456 AF |
616 | goto phy_err; |
617 | ||
35b5f6b1 | 618 | mutex_lock(&phydev->lock); |
e1393456 AF |
619 | if ((PHY_RUNNING == phydev->state) || (PHY_NOLINK == phydev->state)) |
620 | phydev->state = PHY_CHANGELINK; | |
35b5f6b1 | 621 | mutex_unlock(&phydev->lock); |
e1393456 | 622 | |
0ac49527 | 623 | atomic_dec(&phydev->irq_disable); |
e1393456 AF |
624 | enable_irq(phydev->irq); |
625 | ||
626 | /* Reenable interrupts */ | |
e62a768f SS |
627 | if (PHY_HALTED != phydev->state && |
628 | phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED)) | |
e1393456 AF |
629 | goto irq_enable_err; |
630 | ||
a390d1f3 MS |
631 | /* reschedule state queue work to run as soon as possible */ |
632 | cancel_delayed_work_sync(&phydev->state_queue); | |
bbb47bde | 633 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, 0); |
e1393456 AF |
634 | return; |
635 | ||
a8729eb3 AG |
636 | ignore: |
637 | atomic_dec(&phydev->irq_disable); | |
638 | enable_irq(phydev->irq); | |
639 | return; | |
640 | ||
e1393456 AF |
641 | irq_enable_err: |
642 | disable_irq(phydev->irq); | |
0ac49527 | 643 | atomic_inc(&phydev->irq_disable); |
e1393456 AF |
644 | phy_err: |
645 | phy_error(phydev); | |
646 | } | |
647 | ||
b3df0da8 RD |
648 | /** |
649 | * phy_stop - Bring down the PHY link, and stop checking the status | |
650 | * @phydev: target phy_device struct | |
651 | */ | |
e1393456 AF |
652 | void phy_stop(struct phy_device *phydev) |
653 | { | |
35b5f6b1 | 654 | mutex_lock(&phydev->lock); |
e1393456 AF |
655 | |
656 | if (PHY_HALTED == phydev->state) | |
657 | goto out_unlock; | |
658 | ||
2c7b4921 | 659 | if (phy_interrupt_is_valid(phydev)) { |
e1393456 AF |
660 | /* Disable PHY Interrupts */ |
661 | phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
e1393456 | 662 | |
3c3070d7 MR |
663 | /* Clear any pending interrupts */ |
664 | phy_clear_interrupt(phydev); | |
665 | } | |
e1393456 | 666 | |
6daf6531 MR |
667 | phydev->state = PHY_HALTED; |
668 | ||
e1393456 | 669 | out_unlock: |
35b5f6b1 | 670 | mutex_unlock(&phydev->lock); |
3c3070d7 | 671 | |
2f53e904 | 672 | /* Cannot call flush_scheduled_work() here as desired because |
3c3070d7 MR |
673 | * of rtnl_lock(), but PHY_HALTED shall guarantee phy_change() |
674 | * will not reenable interrupts. | |
675 | */ | |
e1393456 | 676 | } |
2f53e904 | 677 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 678 | |
b3df0da8 RD |
679 | /** |
680 | * phy_start - start or restart a PHY device | |
681 | * @phydev: target phy_device struct | |
e1393456 | 682 | * |
b3df0da8 | 683 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
684 | * handle PHY-related work. Used during startup to start the |
685 | * PHY, and after a call to phy_stop() to resume operation. | |
686 | * Also used to indicate the MDIO bus has cleared an error | |
687 | * condition. | |
688 | */ | |
689 | void phy_start(struct phy_device *phydev) | |
690 | { | |
35b5f6b1 | 691 | mutex_lock(&phydev->lock); |
e1393456 AF |
692 | |
693 | switch (phydev->state) { | |
e109374f FF |
694 | case PHY_STARTING: |
695 | phydev->state = PHY_PENDING; | |
696 | break; | |
697 | case PHY_READY: | |
698 | phydev->state = PHY_UP; | |
699 | break; | |
700 | case PHY_HALTED: | |
701 | phydev->state = PHY_RESUMING; | |
702 | default: | |
703 | break; | |
e1393456 | 704 | } |
35b5f6b1 | 705 | mutex_unlock(&phydev->lock); |
e1393456 | 706 | } |
e1393456 | 707 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 708 | |
35b5f6b1 NC |
709 | /** |
710 | * phy_state_machine - Handle the state machine | |
711 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 712 | */ |
4f9c85a1 | 713 | void phy_state_machine(struct work_struct *work) |
00db8189 | 714 | { |
bf6aede7 | 715 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 716 | struct phy_device *phydev = |
a390d1f3 | 717 | container_of(dwork, struct phy_device, state_queue); |
6e14a5ee | 718 | bool needs_aneg = false, do_suspend = false, do_resume = false; |
00db8189 AF |
719 | int err = 0; |
720 | ||
35b5f6b1 | 721 | mutex_lock(&phydev->lock); |
00db8189 | 722 | |
e109374f FF |
723 | switch (phydev->state) { |
724 | case PHY_DOWN: | |
725 | case PHY_STARTING: | |
726 | case PHY_READY: | |
727 | case PHY_PENDING: | |
728 | break; | |
729 | case PHY_UP: | |
6e14a5ee | 730 | needs_aneg = true; |
00db8189 | 731 | |
e109374f FF |
732 | phydev->link_timeout = PHY_AN_TIMEOUT; |
733 | ||
734 | break; | |
735 | case PHY_AN: | |
736 | err = phy_read_status(phydev); | |
e109374f | 737 | if (err < 0) |
00db8189 | 738 | break; |
6b655529 | 739 | |
2f53e904 | 740 | /* If the link is down, give up on negotiation for now */ |
e109374f FF |
741 | if (!phydev->link) { |
742 | phydev->state = PHY_NOLINK; | |
743 | netif_carrier_off(phydev->attached_dev); | |
744 | phydev->adjust_link(phydev->attached_dev); | |
745 | break; | |
746 | } | |
6b655529 | 747 | |
2f53e904 | 748 | /* Check if negotiation is done. Break if there's an error */ |
e109374f FF |
749 | err = phy_aneg_done(phydev); |
750 | if (err < 0) | |
751 | break; | |
6b655529 | 752 | |
e109374f FF |
753 | /* If AN is done, we're running */ |
754 | if (err > 0) { | |
755 | phydev->state = PHY_RUNNING; | |
756 | netif_carrier_on(phydev->attached_dev); | |
757 | phydev->adjust_link(phydev->attached_dev); | |
00db8189 | 758 | |
fa8cddaf | 759 | } else if (0 == phydev->link_timeout--) |
6e14a5ee | 760 | needs_aneg = true; |
e109374f FF |
761 | break; |
762 | case PHY_NOLINK: | |
763 | err = phy_read_status(phydev); | |
e109374f | 764 | if (err) |
00db8189 | 765 | break; |
00db8189 | 766 | |
e109374f | 767 | if (phydev->link) { |
e46e08b8 BK |
768 | if (AUTONEG_ENABLE == phydev->autoneg) { |
769 | err = phy_aneg_done(phydev); | |
770 | if (err < 0) | |
771 | break; | |
772 | ||
773 | if (!err) { | |
774 | phydev->state = PHY_AN; | |
775 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
776 | break; | |
777 | } | |
778 | } | |
e109374f FF |
779 | phydev->state = PHY_RUNNING; |
780 | netif_carrier_on(phydev->attached_dev); | |
781 | phydev->adjust_link(phydev->attached_dev); | |
782 | } | |
783 | break; | |
784 | case PHY_FORCING: | |
785 | err = genphy_update_link(phydev); | |
e109374f | 786 | if (err) |
00db8189 | 787 | break; |
00db8189 | 788 | |
e109374f FF |
789 | if (phydev->link) { |
790 | phydev->state = PHY_RUNNING; | |
791 | netif_carrier_on(phydev->attached_dev); | |
792 | } else { | |
793 | if (0 == phydev->link_timeout--) | |
6e14a5ee | 794 | needs_aneg = true; |
e109374f | 795 | } |
00db8189 | 796 | |
e109374f FF |
797 | phydev->adjust_link(phydev->attached_dev); |
798 | break; | |
799 | case PHY_RUNNING: | |
800 | /* Only register a CHANGE if we are | |
801 | * polling or ignoring interrupts | |
802 | */ | |
803 | if (!phy_interrupt_is_valid(phydev)) | |
804 | phydev->state = PHY_CHANGELINK; | |
805 | break; | |
806 | case PHY_CHANGELINK: | |
807 | err = phy_read_status(phydev); | |
e109374f | 808 | if (err) |
00db8189 | 809 | break; |
00db8189 | 810 | |
e109374f FF |
811 | if (phydev->link) { |
812 | phydev->state = PHY_RUNNING; | |
813 | netif_carrier_on(phydev->attached_dev); | |
814 | } else { | |
815 | phydev->state = PHY_NOLINK; | |
816 | netif_carrier_off(phydev->attached_dev); | |
817 | } | |
00db8189 | 818 | |
e109374f | 819 | phydev->adjust_link(phydev->attached_dev); |
00db8189 | 820 | |
e109374f FF |
821 | if (phy_interrupt_is_valid(phydev)) |
822 | err = phy_config_interrupt(phydev, | |
2f53e904 | 823 | PHY_INTERRUPT_ENABLED); |
e109374f FF |
824 | break; |
825 | case PHY_HALTED: | |
826 | if (phydev->link) { | |
827 | phydev->link = 0; | |
828 | netif_carrier_off(phydev->attached_dev); | |
00db8189 | 829 | phydev->adjust_link(phydev->attached_dev); |
6e14a5ee | 830 | do_suspend = true; |
e109374f FF |
831 | } |
832 | break; | |
833 | case PHY_RESUMING: | |
e109374f | 834 | err = phy_clear_interrupt(phydev); |
e109374f FF |
835 | if (err) |
836 | break; | |
00db8189 | 837 | |
2f53e904 | 838 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
e109374f FF |
839 | if (err) |
840 | break; | |
00db8189 | 841 | |
e109374f FF |
842 | if (AUTONEG_ENABLE == phydev->autoneg) { |
843 | err = phy_aneg_done(phydev); | |
844 | if (err < 0) | |
00db8189 AF |
845 | break; |
846 | ||
e109374f | 847 | /* err > 0 if AN is done. |
2f53e904 SS |
848 | * Otherwise, it's 0, and we're still waiting for AN |
849 | */ | |
e109374f | 850 | if (err > 0) { |
42caa074 WF |
851 | err = phy_read_status(phydev); |
852 | if (err) | |
853 | break; | |
854 | ||
855 | if (phydev->link) { | |
856 | phydev->state = PHY_RUNNING; | |
857 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 858 | } else { |
42caa074 | 859 | phydev->state = PHY_NOLINK; |
2f53e904 | 860 | } |
42caa074 | 861 | phydev->adjust_link(phydev->attached_dev); |
e109374f FF |
862 | } else { |
863 | phydev->state = PHY_AN; | |
864 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
42caa074 | 865 | } |
e109374f FF |
866 | } else { |
867 | err = phy_read_status(phydev); | |
868 | if (err) | |
869 | break; | |
870 | ||
871 | if (phydev->link) { | |
872 | phydev->state = PHY_RUNNING; | |
873 | netif_carrier_on(phydev->attached_dev); | |
2f53e904 | 874 | } else { |
e109374f | 875 | phydev->state = PHY_NOLINK; |
2f53e904 | 876 | } |
e109374f FF |
877 | phydev->adjust_link(phydev->attached_dev); |
878 | } | |
6e14a5ee | 879 | do_resume = true; |
e109374f | 880 | break; |
00db8189 AF |
881 | } |
882 | ||
35b5f6b1 | 883 | mutex_unlock(&phydev->lock); |
00db8189 AF |
884 | |
885 | if (needs_aneg) | |
886 | err = phy_start_aneg(phydev); | |
6e14a5ee | 887 | else if (do_suspend) |
be9dad1f | 888 | phy_suspend(phydev); |
6e14a5ee ZG |
889 | else if (do_resume) |
890 | phy_resume(phydev); | |
be9dad1f | 891 | |
00db8189 AF |
892 | if (err < 0) |
893 | phy_error(phydev); | |
894 | ||
bbb47bde | 895 | queue_delayed_work(system_power_efficient_wq, &phydev->state_queue, |
2f53e904 | 896 | PHY_STATE_TIME * HZ); |
35b5f6b1 | 897 | } |
a59a4d19 | 898 | |
5ea94e76 FF |
899 | void phy_mac_interrupt(struct phy_device *phydev, int new_link) |
900 | { | |
901 | cancel_work_sync(&phydev->phy_queue); | |
902 | phydev->link = new_link; | |
903 | schedule_work(&phydev->phy_queue); | |
904 | } | |
905 | EXPORT_SYMBOL(phy_mac_interrupt); | |
906 | ||
a59a4d19 GC |
907 | static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad, |
908 | int addr) | |
909 | { | |
910 | /* Write the desired MMD Devad */ | |
911 | bus->write(bus, addr, MII_MMD_CTRL, devad); | |
912 | ||
913 | /* Write the desired MMD register address */ | |
914 | bus->write(bus, addr, MII_MMD_DATA, prtad); | |
915 | ||
916 | /* Select the Function : DATA with no post increment */ | |
917 | bus->write(bus, addr, MII_MMD_CTRL, (devad | MII_MMD_CTRL_NOINCR)); | |
918 | } | |
919 | ||
920 | /** | |
921 | * phy_read_mmd_indirect - reads data from the MMD registers | |
922 | * @bus: the target MII bus | |
923 | * @prtad: MMD Address | |
924 | * @devad: MMD DEVAD | |
925 | * @addr: PHY address on the MII bus | |
926 | * | |
927 | * Description: it reads data from the MMD registers (clause 22 to access to | |
928 | * clause 45) of the specified phy address. | |
929 | * To read these register we have: | |
930 | * 1) Write reg 13 // DEVAD | |
931 | * 2) Write reg 14 // MMD Address | |
932 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
933 | * 3) Read reg 14 // Read MMD data | |
934 | */ | |
935 | static int phy_read_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
936 | int addr) | |
937 | { | |
a59a4d19 GC |
938 | mmd_phy_indirect(bus, prtad, devad, addr); |
939 | ||
940 | /* Read the content of the MMD's selected register */ | |
e62a768f | 941 | return bus->read(bus, addr, MII_MMD_DATA); |
a59a4d19 GC |
942 | } |
943 | ||
944 | /** | |
945 | * phy_write_mmd_indirect - writes data to the MMD registers | |
946 | * @bus: the target MII bus | |
947 | * @prtad: MMD Address | |
948 | * @devad: MMD DEVAD | |
949 | * @addr: PHY address on the MII bus | |
950 | * @data: data to write in the MMD register | |
951 | * | |
952 | * Description: Write data from the MMD registers of the specified | |
953 | * phy address. | |
954 | * To write these register we have: | |
955 | * 1) Write reg 13 // DEVAD | |
956 | * 2) Write reg 14 // MMD Address | |
957 | * 3) Write reg 13 // MMD Data Command for MMD DEVAD | |
958 | * 3) Write reg 14 // Write MMD data | |
959 | */ | |
960 | static void phy_write_mmd_indirect(struct mii_bus *bus, int prtad, int devad, | |
961 | int addr, u32 data) | |
962 | { | |
963 | mmd_phy_indirect(bus, prtad, devad, addr); | |
964 | ||
965 | /* Write the data into MMD's selected register */ | |
966 | bus->write(bus, addr, MII_MMD_DATA, data); | |
967 | } | |
968 | ||
a59a4d19 GC |
969 | /** |
970 | * phy_init_eee - init and check the EEE feature | |
971 | * @phydev: target phy_device struct | |
972 | * @clk_stop_enable: PHY may stop the clock during LPI | |
973 | * | |
974 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
975 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
976 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
977 | * bit if required. | |
978 | */ | |
979 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
980 | { | |
a59a4d19 GC |
981 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
982 | * Also EEE feature is active when core is operating with MII, GMII | |
983 | * or RGMII. | |
984 | */ | |
985 | if ((phydev->duplex == DUPLEX_FULL) && | |
986 | ((phydev->interface == PHY_INTERFACE_MODE_MII) || | |
987 | (phydev->interface == PHY_INTERFACE_MODE_GMII) || | |
988 | (phydev->interface == PHY_INTERFACE_MODE_RGMII))) { | |
989 | int eee_lp, eee_cap, eee_adv; | |
990 | u32 lp, cap, adv; | |
4ae6e50c BH |
991 | int status; |
992 | unsigned int idx; | |
a59a4d19 GC |
993 | |
994 | /* Read phy status to properly get the right settings */ | |
995 | status = phy_read_status(phydev); | |
996 | if (status) | |
997 | return status; | |
998 | ||
999 | /* First check if the EEE ability is supported */ | |
1000 | eee_cap = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
1001 | MDIO_MMD_PCS, phydev->addr); | |
1002 | if (eee_cap < 0) | |
1003 | return eee_cap; | |
1004 | ||
b32607dd | 1005 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 1006 | if (!cap) |
e62a768f | 1007 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1008 | |
1009 | /* Check which link settings negotiated and verify it in | |
1010 | * the EEE advertising registers. | |
1011 | */ | |
1012 | eee_lp = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
1013 | MDIO_MMD_AN, phydev->addr); | |
1014 | if (eee_lp < 0) | |
1015 | return eee_lp; | |
1016 | ||
1017 | eee_adv = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1018 | MDIO_MMD_AN, phydev->addr); | |
1019 | if (eee_adv < 0) | |
1020 | return eee_adv; | |
1021 | ||
b32607dd AB |
1022 | adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv); |
1023 | lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp); | |
a59a4d19 | 1024 | idx = phy_find_setting(phydev->speed, phydev->duplex); |
9a9c56cb | 1025 | if (!(lp & adv & settings[idx].setting)) |
e62a768f | 1026 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1027 | |
1028 | if (clk_stop_enable) { | |
1029 | /* Configure the PHY to stop receiving xMII | |
1030 | * clock while it is signaling LPI. | |
1031 | */ | |
1032 | int val = phy_read_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1033 | MDIO_MMD_PCS, | |
1034 | phydev->addr); | |
1035 | if (val < 0) | |
1036 | return val; | |
1037 | ||
1038 | val |= MDIO_PCS_CTRL1_CLKSTOP_EN; | |
1039 | phy_write_mmd_indirect(phydev->bus, MDIO_CTRL1, | |
1040 | MDIO_MMD_PCS, phydev->addr, val); | |
1041 | } | |
1042 | ||
e62a768f | 1043 | return 0; /* EEE supported */ |
a59a4d19 GC |
1044 | } |
1045 | ||
e62a768f | 1046 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1047 | } |
1048 | EXPORT_SYMBOL(phy_init_eee); | |
1049 | ||
1050 | /** | |
1051 | * phy_get_eee_err - report the EEE wake error count | |
1052 | * @phydev: target phy_device struct | |
1053 | * | |
1054 | * Description: it is to report the number of time where the PHY | |
1055 | * failed to complete its normal wake sequence. | |
1056 | */ | |
1057 | int phy_get_eee_err(struct phy_device *phydev) | |
1058 | { | |
1059 | return phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_WK_ERR, | |
1060 | MDIO_MMD_PCS, phydev->addr); | |
a59a4d19 GC |
1061 | } |
1062 | EXPORT_SYMBOL(phy_get_eee_err); | |
1063 | ||
1064 | /** | |
1065 | * phy_ethtool_get_eee - get EEE supported and status | |
1066 | * @phydev: target phy_device struct | |
1067 | * @data: ethtool_eee data | |
1068 | * | |
1069 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1070 | * capabilities. | |
1071 | */ | |
1072 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1073 | { | |
1074 | int val; | |
1075 | ||
1076 | /* Get Supported EEE */ | |
1077 | val = phy_read_mmd_indirect(phydev->bus, MDIO_PCS_EEE_ABLE, | |
1078 | MDIO_MMD_PCS, phydev->addr); | |
1079 | if (val < 0) | |
1080 | return val; | |
b32607dd | 1081 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1082 | |
1083 | /* Get advertisement EEE */ | |
1084 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, | |
1085 | MDIO_MMD_AN, phydev->addr); | |
1086 | if (val < 0) | |
1087 | return val; | |
b32607dd | 1088 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1089 | |
1090 | /* Get LP advertisement EEE */ | |
1091 | val = phy_read_mmd_indirect(phydev->bus, MDIO_AN_EEE_LPABLE, | |
1092 | MDIO_MMD_AN, phydev->addr); | |
1093 | if (val < 0) | |
1094 | return val; | |
b32607dd | 1095 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 GC |
1096 | |
1097 | return 0; | |
1098 | } | |
1099 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1100 | ||
1101 | /** | |
1102 | * phy_ethtool_set_eee - set EEE supported and status | |
1103 | * @phydev: target phy_device struct | |
1104 | * @data: ethtool_eee data | |
1105 | * | |
1106 | * Description: it is to program the Advertisement EEE register. | |
1107 | */ | |
1108 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1109 | { | |
553fe92b | 1110 | int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised); |
a59a4d19 | 1111 | |
a59a4d19 GC |
1112 | phy_write_mmd_indirect(phydev->bus, MDIO_AN_EEE_ADV, MDIO_MMD_AN, |
1113 | phydev->addr, val); | |
1114 | ||
1115 | return 0; | |
1116 | } | |
1117 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1118 | |
1119 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1120 | { | |
1121 | if (phydev->drv->set_wol) | |
1122 | return phydev->drv->set_wol(phydev, wol); | |
1123 | ||
1124 | return -EOPNOTSUPP; | |
1125 | } | |
1126 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1127 | ||
1128 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1129 | { | |
1130 | if (phydev->drv->get_wol) | |
1131 | phydev->drv->get_wol(phydev, wol); | |
1132 | } | |
1133 | EXPORT_SYMBOL(phy_ethtool_get_wol); |