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00db8189 AF |
1 | /* |
2 | * drivers/net/phy/phy.c | |
3 | * | |
4 | * Framework for configuring and reading PHY devices | |
5 | * Based on code in sungem_phy.c and gianfar_phy.c | |
6 | * | |
7 | * Author: Andy Fleming | |
8 | * | |
9 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | * | |
16 | */ | |
17 | #include <linux/config.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/sched.h> | |
20 | #include <linux/string.h> | |
21 | #include <linux/errno.h> | |
22 | #include <linux/unistd.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/netdevice.h> | |
28 | #include <linux/etherdevice.h> | |
29 | #include <linux/skbuff.h> | |
30 | #include <linux/spinlock.h> | |
31 | #include <linux/mm.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/version.h> | |
34 | #include <linux/mii.h> | |
35 | #include <linux/ethtool.h> | |
36 | #include <linux/phy.h> | |
37 | ||
38 | #include <asm/io.h> | |
39 | #include <asm/irq.h> | |
40 | #include <asm/uaccess.h> | |
41 | ||
00db8189 | 42 | static void phy_timer(unsigned long data); |
2bf69b5f JG |
43 | static int phy_disable_interrupts(struct phy_device *phydev); |
44 | static void phy_sanitize_settings(struct phy_device *phydev); | |
45 | static int phy_stop_interrupts(struct phy_device *phydev); | |
00db8189 AF |
46 | |
47 | ||
48 | /* Convenience functions for reading/writing a given PHY | |
49 | * register. They MUST NOT be called from interrupt context, | |
50 | * because the bus read/write functions may wait for an interrupt | |
51 | * to conclude the operation. */ | |
52 | int phy_read(struct phy_device *phydev, u16 regnum) | |
53 | { | |
54 | int retval; | |
55 | struct mii_bus *bus = phydev->bus; | |
56 | ||
57 | spin_lock_bh(&bus->mdio_lock); | |
58 | retval = bus->read(bus, phydev->addr, regnum); | |
59 | spin_unlock_bh(&bus->mdio_lock); | |
60 | ||
61 | return retval; | |
62 | } | |
63 | EXPORT_SYMBOL(phy_read); | |
64 | ||
65 | int phy_write(struct phy_device *phydev, u16 regnum, u16 val) | |
66 | { | |
67 | int err; | |
68 | struct mii_bus *bus = phydev->bus; | |
69 | ||
70 | spin_lock_bh(&bus->mdio_lock); | |
71 | err = bus->write(bus, phydev->addr, regnum, val); | |
72 | spin_unlock_bh(&bus->mdio_lock); | |
73 | ||
74 | return err; | |
75 | } | |
76 | EXPORT_SYMBOL(phy_write); | |
77 | ||
78 | ||
79 | int phy_clear_interrupt(struct phy_device *phydev) | |
80 | { | |
81 | int err = 0; | |
82 | ||
83 | if (phydev->drv->ack_interrupt) | |
84 | err = phydev->drv->ack_interrupt(phydev); | |
85 | ||
86 | return err; | |
87 | } | |
88 | ||
89 | ||
90 | int phy_config_interrupt(struct phy_device *phydev, u32 interrupts) | |
91 | { | |
92 | int err = 0; | |
93 | ||
94 | phydev->interrupts = interrupts; | |
95 | if (phydev->drv->config_intr) | |
96 | err = phydev->drv->config_intr(phydev); | |
97 | ||
98 | return err; | |
99 | } | |
100 | ||
101 | ||
102 | /* phy_aneg_done | |
103 | * | |
104 | * description: Reads the status register and returns 0 either if | |
105 | * auto-negotiation is incomplete, or if there was an error. | |
106 | * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. | |
107 | */ | |
108 | static inline int phy_aneg_done(struct phy_device *phydev) | |
109 | { | |
110 | int retval; | |
111 | ||
112 | retval = phy_read(phydev, MII_BMSR); | |
113 | ||
114 | return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); | |
115 | } | |
116 | ||
117 | /* phy_start_aneg | |
118 | * | |
119 | * description: Calls the PHY driver's config_aneg, and then | |
120 | * sets the PHY state to PHY_AN if auto-negotiation is enabled, | |
121 | * and to PHY_FORCING if auto-negotiation is disabled. Unless | |
122 | * the PHY is currently HALTED. | |
123 | */ | |
2bf69b5f | 124 | static int phy_start_aneg(struct phy_device *phydev) |
00db8189 AF |
125 | { |
126 | int err; | |
127 | ||
128 | spin_lock(&phydev->lock); | |
129 | ||
130 | if (AUTONEG_DISABLE == phydev->autoneg) | |
131 | phy_sanitize_settings(phydev); | |
132 | ||
133 | err = phydev->drv->config_aneg(phydev); | |
134 | ||
135 | if (err < 0) | |
136 | goto out_unlock; | |
137 | ||
138 | if (phydev->state != PHY_HALTED) { | |
139 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
140 | phydev->state = PHY_AN; | |
141 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
142 | } else { | |
143 | phydev->state = PHY_FORCING; | |
144 | phydev->link_timeout = PHY_FORCE_TIMEOUT; | |
145 | } | |
146 | } | |
147 | ||
148 | out_unlock: | |
149 | spin_unlock(&phydev->lock); | |
150 | return err; | |
151 | } | |
00db8189 AF |
152 | |
153 | /* A structure for mapping a particular speed and duplex | |
154 | * combination to a particular SUPPORTED and ADVERTISED value */ | |
155 | struct phy_setting { | |
156 | int speed; | |
157 | int duplex; | |
158 | u32 setting; | |
159 | }; | |
160 | ||
161 | /* A mapping of all SUPPORTED settings to speed/duplex */ | |
162 | static struct phy_setting settings[] = { | |
163 | { | |
164 | .speed = 10000, | |
165 | .duplex = DUPLEX_FULL, | |
166 | .setting = SUPPORTED_10000baseT_Full, | |
167 | }, | |
168 | { | |
169 | .speed = SPEED_1000, | |
170 | .duplex = DUPLEX_FULL, | |
171 | .setting = SUPPORTED_1000baseT_Full, | |
172 | }, | |
173 | { | |
174 | .speed = SPEED_1000, | |
175 | .duplex = DUPLEX_HALF, | |
176 | .setting = SUPPORTED_1000baseT_Half, | |
177 | }, | |
178 | { | |
179 | .speed = SPEED_100, | |
180 | .duplex = DUPLEX_FULL, | |
181 | .setting = SUPPORTED_100baseT_Full, | |
182 | }, | |
183 | { | |
184 | .speed = SPEED_100, | |
185 | .duplex = DUPLEX_HALF, | |
186 | .setting = SUPPORTED_100baseT_Half, | |
187 | }, | |
188 | { | |
189 | .speed = SPEED_10, | |
190 | .duplex = DUPLEX_FULL, | |
191 | .setting = SUPPORTED_10baseT_Full, | |
192 | }, | |
193 | { | |
194 | .speed = SPEED_10, | |
195 | .duplex = DUPLEX_HALF, | |
196 | .setting = SUPPORTED_10baseT_Half, | |
197 | }, | |
198 | }; | |
199 | ||
200 | #define MAX_NUM_SETTINGS (sizeof(settings)/sizeof(struct phy_setting)) | |
201 | ||
202 | /* phy_find_setting | |
203 | * | |
204 | * description: Searches the settings array for the setting which | |
205 | * matches the desired speed and duplex, and returns the index | |
206 | * of that setting. Returns the index of the last setting if | |
207 | * none of the others match. | |
208 | */ | |
209 | static inline int phy_find_setting(int speed, int duplex) | |
210 | { | |
211 | int idx = 0; | |
212 | ||
213 | while (idx < ARRAY_SIZE(settings) && | |
214 | (settings[idx].speed != speed || | |
215 | settings[idx].duplex != duplex)) | |
216 | idx++; | |
217 | ||
218 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
219 | } | |
220 | ||
221 | /* phy_find_valid | |
222 | * idx: The first index in settings[] to search | |
223 | * features: A mask of the valid settings | |
224 | * | |
225 | * description: Returns the index of the first valid setting less | |
226 | * than or equal to the one pointed to by idx, as determined by | |
227 | * the mask in features. Returns the index of the last setting | |
228 | * if nothing else matches. | |
229 | */ | |
230 | static inline int phy_find_valid(int idx, u32 features) | |
231 | { | |
232 | while (idx < MAX_NUM_SETTINGS && !(settings[idx].setting & features)) | |
233 | idx++; | |
234 | ||
235 | return idx < MAX_NUM_SETTINGS ? idx : MAX_NUM_SETTINGS - 1; | |
236 | } | |
237 | ||
238 | /* phy_sanitize_settings | |
239 | * | |
240 | * description: Make sure the PHY is set to supported speeds and | |
241 | * duplexes. Drop down by one in this order: 1000/FULL, | |
242 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF | |
243 | */ | |
2bf69b5f | 244 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 AF |
245 | { |
246 | u32 features = phydev->supported; | |
247 | int idx; | |
248 | ||
249 | /* Sanitize settings based on PHY capabilities */ | |
250 | if ((features & SUPPORTED_Autoneg) == 0) | |
251 | phydev->autoneg = 0; | |
252 | ||
253 | idx = phy_find_valid(phy_find_setting(phydev->speed, phydev->duplex), | |
254 | features); | |
255 | ||
256 | phydev->speed = settings[idx].speed; | |
257 | phydev->duplex = settings[idx].duplex; | |
258 | } | |
00db8189 AF |
259 | |
260 | /* phy_force_reduction | |
261 | * | |
262 | * description: Reduces the speed/duplex settings by | |
263 | * one notch. The order is so: | |
264 | * 1000/FULL, 1000/HALF, 100/FULL, 100/HALF, | |
265 | * 10/FULL, 10/HALF. The function bottoms out at 10/HALF. | |
266 | */ | |
267 | static void phy_force_reduction(struct phy_device *phydev) | |
268 | { | |
269 | int idx; | |
270 | ||
271 | idx = phy_find_setting(phydev->speed, phydev->duplex); | |
272 | ||
273 | idx++; | |
274 | ||
275 | idx = phy_find_valid(idx, phydev->supported); | |
276 | ||
277 | phydev->speed = settings[idx].speed; | |
278 | phydev->duplex = settings[idx].duplex; | |
279 | ||
280 | pr_info("Trying %d/%s\n", phydev->speed, | |
281 | DUPLEX_FULL == phydev->duplex ? | |
282 | "FULL" : "HALF"); | |
283 | } | |
284 | ||
285 | /* phy_ethtool_sset: | |
286 | * A generic ethtool sset function. Handles all the details | |
287 | * | |
288 | * A few notes about parameter checking: | |
289 | * - We don't set port or transceiver, so we don't care what they | |
290 | * were set to. | |
291 | * - phy_start_aneg() will make sure forced settings are sane, and | |
292 | * choose the next best ones from the ones selected, so we don't | |
293 | * care if ethtool tries to give us bad values | |
294 | */ | |
295 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
296 | { | |
297 | if (cmd->phy_address != phydev->addr) | |
298 | return -EINVAL; | |
299 | ||
300 | /* We make sure that we don't pass unsupported | |
301 | * values in to the PHY */ | |
302 | cmd->advertising &= phydev->supported; | |
303 | ||
304 | /* Verify the settings we care about. */ | |
305 | if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) | |
306 | return -EINVAL; | |
307 | ||
308 | if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) | |
309 | return -EINVAL; | |
310 | ||
311 | if (cmd->autoneg == AUTONEG_DISABLE | |
312 | && ((cmd->speed != SPEED_1000 | |
313 | && cmd->speed != SPEED_100 | |
314 | && cmd->speed != SPEED_10) | |
315 | || (cmd->duplex != DUPLEX_HALF | |
316 | && cmd->duplex != DUPLEX_FULL))) | |
317 | return -EINVAL; | |
318 | ||
319 | phydev->autoneg = cmd->autoneg; | |
320 | ||
321 | phydev->speed = cmd->speed; | |
322 | ||
323 | phydev->advertising = cmd->advertising; | |
324 | ||
325 | if (AUTONEG_ENABLE == cmd->autoneg) | |
326 | phydev->advertising |= ADVERTISED_Autoneg; | |
327 | else | |
328 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
329 | ||
330 | phydev->duplex = cmd->duplex; | |
331 | ||
332 | /* Restart the PHY */ | |
333 | phy_start_aneg(phydev); | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
338 | int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd) | |
339 | { | |
340 | cmd->supported = phydev->supported; | |
341 | ||
342 | cmd->advertising = phydev->advertising; | |
343 | ||
344 | cmd->speed = phydev->speed; | |
345 | cmd->duplex = phydev->duplex; | |
346 | cmd->port = PORT_MII; | |
347 | cmd->phy_address = phydev->addr; | |
348 | cmd->transceiver = XCVR_EXTERNAL; | |
349 | cmd->autoneg = phydev->autoneg; | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
354 | ||
355 | /* Note that this function is currently incompatible with the | |
356 | * PHYCONTROL layer. It changes registers without regard to | |
357 | * current state. Use at own risk | |
358 | */ | |
359 | int phy_mii_ioctl(struct phy_device *phydev, | |
360 | struct mii_ioctl_data *mii_data, int cmd) | |
361 | { | |
362 | u16 val = mii_data->val_in; | |
363 | ||
364 | switch (cmd) { | |
365 | case SIOCGMIIPHY: | |
366 | mii_data->phy_id = phydev->addr; | |
367 | break; | |
368 | case SIOCGMIIREG: | |
369 | mii_data->val_out = phy_read(phydev, mii_data->reg_num); | |
370 | break; | |
371 | ||
372 | case SIOCSMIIREG: | |
373 | if (!capable(CAP_NET_ADMIN)) | |
374 | return -EPERM; | |
375 | ||
376 | if (mii_data->phy_id == phydev->addr) { | |
377 | switch(mii_data->reg_num) { | |
378 | case MII_BMCR: | |
379 | if (val & (BMCR_RESET|BMCR_ANENABLE)) | |
380 | phydev->autoneg = AUTONEG_DISABLE; | |
381 | else | |
382 | phydev->autoneg = AUTONEG_ENABLE; | |
383 | if ((!phydev->autoneg) && (val & BMCR_FULLDPLX)) | |
384 | phydev->duplex = DUPLEX_FULL; | |
385 | else | |
386 | phydev->duplex = DUPLEX_HALF; | |
387 | break; | |
388 | case MII_ADVERTISE: | |
389 | phydev->advertising = val; | |
390 | break; | |
391 | default: | |
392 | /* do nothing */ | |
393 | break; | |
394 | } | |
395 | } | |
396 | ||
397 | phy_write(phydev, mii_data->reg_num, val); | |
398 | ||
399 | if (mii_data->reg_num == MII_BMCR | |
400 | && val & BMCR_RESET | |
401 | && phydev->drv->config_init) | |
402 | phydev->drv->config_init(phydev); | |
403 | break; | |
404 | } | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
409 | /* phy_start_machine: | |
410 | * | |
411 | * description: The PHY infrastructure can run a state machine | |
412 | * which tracks whether the PHY is starting up, negotiating, | |
413 | * etc. This function starts the timer which tracks the state | |
414 | * of the PHY. If you want to be notified when the state | |
415 | * changes, pass in the callback, otherwise, pass NULL. If you | |
416 | * want to maintain your own state machine, do not call this | |
417 | * function. */ | |
418 | void phy_start_machine(struct phy_device *phydev, | |
419 | void (*handler)(struct net_device *)) | |
420 | { | |
421 | phydev->adjust_state = handler; | |
422 | ||
423 | init_timer(&phydev->phy_timer); | |
424 | phydev->phy_timer.function = &phy_timer; | |
425 | phydev->phy_timer.data = (unsigned long) phydev; | |
426 | mod_timer(&phydev->phy_timer, jiffies + HZ); | |
427 | } | |
428 | ||
429 | /* phy_stop_machine | |
430 | * | |
431 | * description: Stops the state machine timer, sets the state to | |
432 | * UP (unless it wasn't up yet), and then frees the interrupt, | |
433 | * if it is in use. This function must be called BEFORE | |
434 | * phy_detach. | |
435 | */ | |
436 | void phy_stop_machine(struct phy_device *phydev) | |
437 | { | |
438 | del_timer_sync(&phydev->phy_timer); | |
439 | ||
440 | spin_lock(&phydev->lock); | |
441 | if (phydev->state > PHY_UP) | |
442 | phydev->state = PHY_UP; | |
443 | spin_unlock(&phydev->lock); | |
444 | ||
445 | if (phydev->irq != PHY_POLL) | |
446 | phy_stop_interrupts(phydev); | |
447 | ||
448 | phydev->adjust_state = NULL; | |
449 | } | |
450 | ||
00db8189 AF |
451 | /* phy_error: |
452 | * | |
453 | * Moves the PHY to the HALTED state in response to a read | |
454 | * or write error, and tells the controller the link is down. | |
455 | * Must not be called from interrupt context, or while the | |
456 | * phydev->lock is held. | |
457 | */ | |
458 | void phy_error(struct phy_device *phydev) | |
459 | { | |
460 | spin_lock(&phydev->lock); | |
461 | phydev->state = PHY_HALTED; | |
462 | spin_unlock(&phydev->lock); | |
463 | } | |
464 | ||
2bf69b5f | 465 | static int phy_stop_interrupts(struct phy_device *phydev) |
00db8189 AF |
466 | { |
467 | int err; | |
468 | ||
2bf69b5f | 469 | err = phy_disable_interrupts(phydev); |
00db8189 | 470 | |
2bf69b5f JG |
471 | if (err) |
472 | phy_error(phydev); | |
00db8189 | 473 | |
2bf69b5f | 474 | free_irq(phydev->irq, phydev); |
00db8189 AF |
475 | |
476 | return err; | |
477 | } | |
00db8189 AF |
478 | |
479 | /* Disable the PHY interrupts from the PHY side */ | |
2bf69b5f | 480 | static int phy_disable_interrupts(struct phy_device *phydev) |
00db8189 AF |
481 | { |
482 | int err; | |
483 | ||
484 | /* Disable PHY interrupts */ | |
485 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
486 | ||
487 | if (err) | |
488 | goto phy_err; | |
489 | ||
490 | /* Clear the interrupt */ | |
491 | err = phy_clear_interrupt(phydev); | |
492 | ||
493 | if (err) | |
494 | goto phy_err; | |
495 | ||
496 | return 0; | |
497 | ||
498 | phy_err: | |
499 | phy_error(phydev); | |
500 | ||
501 | return err; | |
502 | } | |
67c4f3fa | 503 | |
00db8189 AF |
504 | /* PHY timer which handles the state machine */ |
505 | static void phy_timer(unsigned long data) | |
506 | { | |
507 | struct phy_device *phydev = (struct phy_device *)data; | |
508 | int needs_aneg = 0; | |
509 | int err = 0; | |
510 | ||
511 | spin_lock(&phydev->lock); | |
512 | ||
513 | if (phydev->adjust_state) | |
514 | phydev->adjust_state(phydev->attached_dev); | |
515 | ||
516 | switch(phydev->state) { | |
517 | case PHY_DOWN: | |
518 | case PHY_STARTING: | |
519 | case PHY_READY: | |
520 | case PHY_PENDING: | |
521 | break; | |
522 | case PHY_UP: | |
523 | needs_aneg = 1; | |
524 | ||
525 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
526 | ||
527 | break; | |
528 | case PHY_AN: | |
529 | /* Check if negotiation is done. Break | |
530 | * if there's an error */ | |
531 | err = phy_aneg_done(phydev); | |
532 | if (err < 0) | |
533 | break; | |
534 | ||
535 | /* If auto-negotiation is done, we change to | |
536 | * either RUNNING, or NOLINK */ | |
537 | if (err > 0) { | |
538 | err = phy_read_status(phydev); | |
539 | ||
540 | if (err) | |
541 | break; | |
542 | ||
543 | if (phydev->link) { | |
544 | phydev->state = PHY_RUNNING; | |
545 | netif_carrier_on(phydev->attached_dev); | |
546 | } else { | |
547 | phydev->state = PHY_NOLINK; | |
548 | netif_carrier_off(phydev->attached_dev); | |
549 | } | |
550 | ||
551 | phydev->adjust_link(phydev->attached_dev); | |
552 | ||
553 | } else if (0 == phydev->link_timeout--) { | |
554 | /* The counter expired, so either we | |
555 | * switch to forced mode, or the | |
556 | * magic_aneg bit exists, and we try aneg | |
557 | * again */ | |
558 | if (!(phydev->drv->flags & PHY_HAS_MAGICANEG)) { | |
559 | int idx; | |
560 | ||
561 | /* We'll start from the | |
562 | * fastest speed, and work | |
563 | * our way down */ | |
564 | idx = phy_find_valid(0, | |
565 | phydev->supported); | |
566 | ||
567 | phydev->speed = settings[idx].speed; | |
568 | phydev->duplex = settings[idx].duplex; | |
569 | ||
570 | phydev->autoneg = AUTONEG_DISABLE; | |
571 | phydev->state = PHY_FORCING; | |
572 | phydev->link_timeout = | |
573 | PHY_FORCE_TIMEOUT; | |
574 | ||
575 | pr_info("Trying %d/%s\n", | |
576 | phydev->speed, | |
577 | DUPLEX_FULL == | |
578 | phydev->duplex ? | |
579 | "FULL" : "HALF"); | |
580 | } | |
581 | ||
582 | needs_aneg = 1; | |
583 | } | |
584 | break; | |
585 | case PHY_NOLINK: | |
586 | err = phy_read_status(phydev); | |
587 | ||
588 | if (err) | |
589 | break; | |
590 | ||
591 | if (phydev->link) { | |
592 | phydev->state = PHY_RUNNING; | |
593 | netif_carrier_on(phydev->attached_dev); | |
594 | phydev->adjust_link(phydev->attached_dev); | |
595 | } | |
596 | break; | |
597 | case PHY_FORCING: | |
598 | err = phy_read_status(phydev); | |
599 | ||
600 | if (err) | |
601 | break; | |
602 | ||
603 | if (phydev->link) { | |
604 | phydev->state = PHY_RUNNING; | |
605 | netif_carrier_on(phydev->attached_dev); | |
606 | } else { | |
607 | if (0 == phydev->link_timeout--) { | |
608 | phy_force_reduction(phydev); | |
609 | needs_aneg = 1; | |
610 | } | |
611 | } | |
612 | ||
613 | phydev->adjust_link(phydev->attached_dev); | |
614 | break; | |
615 | case PHY_RUNNING: | |
616 | /* Only register a CHANGE if we are | |
617 | * polling */ | |
618 | if (PHY_POLL == phydev->irq) | |
619 | phydev->state = PHY_CHANGELINK; | |
620 | break; | |
621 | case PHY_CHANGELINK: | |
622 | err = phy_read_status(phydev); | |
623 | ||
624 | if (err) | |
625 | break; | |
626 | ||
627 | if (phydev->link) { | |
628 | phydev->state = PHY_RUNNING; | |
629 | netif_carrier_on(phydev->attached_dev); | |
630 | } else { | |
631 | phydev->state = PHY_NOLINK; | |
632 | netif_carrier_off(phydev->attached_dev); | |
633 | } | |
634 | ||
635 | phydev->adjust_link(phydev->attached_dev); | |
636 | ||
637 | if (PHY_POLL != phydev->irq) | |
638 | err = phy_config_interrupt(phydev, | |
639 | PHY_INTERRUPT_ENABLED); | |
640 | break; | |
641 | case PHY_HALTED: | |
642 | if (phydev->link) { | |
643 | phydev->link = 0; | |
644 | netif_carrier_off(phydev->attached_dev); | |
645 | phydev->adjust_link(phydev->attached_dev); | |
646 | } | |
647 | break; | |
648 | case PHY_RESUMING: | |
649 | ||
650 | err = phy_clear_interrupt(phydev); | |
651 | ||
652 | if (err) | |
653 | break; | |
654 | ||
655 | err = phy_config_interrupt(phydev, | |
656 | PHY_INTERRUPT_ENABLED); | |
657 | ||
658 | if (err) | |
659 | break; | |
660 | ||
661 | if (AUTONEG_ENABLE == phydev->autoneg) { | |
662 | err = phy_aneg_done(phydev); | |
663 | if (err < 0) | |
664 | break; | |
665 | ||
666 | /* err > 0 if AN is done. | |
667 | * Otherwise, it's 0, and we're | |
668 | * still waiting for AN */ | |
669 | if (err > 0) { | |
670 | phydev->state = PHY_RUNNING; | |
671 | } else { | |
672 | phydev->state = PHY_AN; | |
673 | phydev->link_timeout = PHY_AN_TIMEOUT; | |
674 | } | |
675 | } else | |
676 | phydev->state = PHY_RUNNING; | |
677 | break; | |
678 | } | |
679 | ||
680 | spin_unlock(&phydev->lock); | |
681 | ||
682 | if (needs_aneg) | |
683 | err = phy_start_aneg(phydev); | |
684 | ||
685 | if (err < 0) | |
686 | phy_error(phydev); | |
687 | ||
688 | mod_timer(&phydev->phy_timer, jiffies + PHY_STATE_TIME * HZ); | |
689 | } | |
690 |