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a2443fd1 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
2f53e904 | 2 | /* Framework for configuring and reading PHY devices |
00db8189 AF |
3 | * Based on code in sungem_phy.c and gianfar_phy.c |
4 | * | |
5 | * Author: Andy Fleming | |
6 | * | |
7 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
0ac49527 | 8 | * Copyright (c) 2006, 2007 Maciej W. Rozycki |
00db8189 | 9 | */ |
8d242488 | 10 | |
00db8189 | 11 | #include <linux/kernel.h> |
00db8189 AF |
12 | #include <linux/string.h> |
13 | #include <linux/errno.h> | |
14 | #include <linux/unistd.h> | |
00db8189 | 15 | #include <linux/interrupt.h> |
00db8189 AF |
16 | #include <linux/delay.h> |
17 | #include <linux/netdevice.h> | |
a68a8138 | 18 | #include <linux/netlink.h> |
00db8189 AF |
19 | #include <linux/etherdevice.h> |
20 | #include <linux/skbuff.h> | |
00db8189 AF |
21 | #include <linux/mm.h> |
22 | #include <linux/module.h> | |
00db8189 AF |
23 | #include <linux/mii.h> |
24 | #include <linux/ethtool.h> | |
1dd3f212 | 25 | #include <linux/ethtool_netlink.h> |
00db8189 | 26 | #include <linux/phy.h> |
d6f8cfa3 | 27 | #include <linux/phy_led_triggers.h> |
298e54fa | 28 | #include <linux/sfp.h> |
3c3070d7 | 29 | #include <linux/workqueue.h> |
a59a4d19 | 30 | #include <linux/mdio.h> |
2f53e904 SS |
31 | #include <linux/io.h> |
32 | #include <linux/uaccess.h> | |
60063497 | 33 | #include <linux/atomic.h> |
1758bde2 | 34 | #include <linux/suspend.h> |
1dd3f212 AL |
35 | #include <net/netlink.h> |
36 | #include <net/genetlink.h> | |
37 | #include <net/sock.h> | |
2f53e904 | 38 | |
97b33bdf HK |
39 | #define PHY_STATE_TIME HZ |
40 | ||
3e2186e0 FF |
41 | #define PHY_STATE_STR(_state) \ |
42 | case PHY_##_state: \ | |
43 | return __stringify(_state); \ | |
44 | ||
45 | static const char *phy_state_to_str(enum phy_state st) | |
46 | { | |
47 | switch (st) { | |
48 | PHY_STATE_STR(DOWN) | |
3e2186e0 | 49 | PHY_STATE_STR(READY) |
3e2186e0 | 50 | PHY_STATE_STR(UP) |
3e2186e0 FF |
51 | PHY_STATE_STR(RUNNING) |
52 | PHY_STATE_STR(NOLINK) | |
a68a8138 | 53 | PHY_STATE_STR(CABLETEST) |
3e2186e0 | 54 | PHY_STATE_STR(HALTED) |
59088b5a | 55 | PHY_STATE_STR(ERROR) |
3e2186e0 FF |
56 | } |
57 | ||
58 | return NULL; | |
59 | } | |
60 | ||
4203d840 FF |
61 | static void phy_process_state_change(struct phy_device *phydev, |
62 | enum phy_state old_state) | |
63 | { | |
64 | if (old_state != phydev->state) { | |
65 | phydev_dbg(phydev, "PHY state change %s -> %s\n", | |
66 | phy_state_to_str(old_state), | |
67 | phy_state_to_str(phydev->state)); | |
68 | if (phydev->drv && phydev->drv->link_change_notify) | |
69 | phydev->drv->link_change_notify(phydev); | |
70 | } | |
71 | } | |
72 | ||
74a992b3 HK |
73 | static void phy_link_up(struct phy_device *phydev) |
74 | { | |
a307593a | 75 | phydev->phy_link_change(phydev, true); |
74a992b3 HK |
76 | phy_led_trigger_change_speed(phydev); |
77 | } | |
78 | ||
a307593a | 79 | static void phy_link_down(struct phy_device *phydev) |
74a992b3 | 80 | { |
a307593a | 81 | phydev->phy_link_change(phydev, false); |
74a992b3 | 82 | phy_led_trigger_change_speed(phydev); |
9a0f830f | 83 | WRITE_ONCE(phydev->link_down_events, phydev->link_down_events + 1); |
74a992b3 | 84 | } |
3e2186e0 | 85 | |
23bfaa59 HK |
86 | static const char *phy_pause_str(struct phy_device *phydev) |
87 | { | |
88 | bool local_pause, local_asym_pause; | |
89 | ||
90 | if (phydev->autoneg == AUTONEG_DISABLE) | |
91 | goto no_pause; | |
92 | ||
93 | local_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, | |
94 | phydev->advertising); | |
95 | local_asym_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, | |
96 | phydev->advertising); | |
97 | ||
98 | if (local_pause && phydev->pause) | |
99 | return "rx/tx"; | |
100 | ||
101 | if (local_asym_pause && phydev->asym_pause) { | |
102 | if (local_pause) | |
103 | return "rx"; | |
104 | if (phydev->pause) | |
105 | return "tx"; | |
106 | } | |
107 | ||
108 | no_pause: | |
109 | return "off"; | |
110 | } | |
111 | ||
b3df0da8 RD |
112 | /** |
113 | * phy_print_status - Convenience function to print out the current phy status | |
114 | * @phydev: the phy_device struct | |
e1393456 AF |
115 | */ |
116 | void phy_print_status(struct phy_device *phydev) | |
117 | { | |
2f53e904 | 118 | if (phydev->link) { |
df40cc88 | 119 | netdev_info(phydev->attached_dev, |
5eee3bb7 | 120 | "Link is Up - %s/%s %s- flow control %s\n", |
766d1d38 | 121 | phy_speed_to_str(phydev->speed), |
da4625ac | 122 | phy_duplex_to_str(phydev->duplex), |
5eee3bb7 | 123 | phydev->downshifted_rate ? "(downshifted) " : "", |
23bfaa59 | 124 | phy_pause_str(phydev)); |
2f53e904 | 125 | } else { |
43b6329f | 126 | netdev_info(phydev->attached_dev, "Link is Down\n"); |
2f53e904 | 127 | } |
e1393456 AF |
128 | } |
129 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 130 | |
0c3e10cb SA |
131 | /** |
132 | * phy_get_rate_matching - determine if rate matching is supported | |
133 | * @phydev: The phy device to return rate matching for | |
134 | * @iface: The interface mode to use | |
135 | * | |
136 | * This determines the type of rate matching (if any) that @phy supports | |
137 | * using @iface. @iface may be %PHY_INTERFACE_MODE_NA to determine if any | |
138 | * interface supports rate matching. | |
139 | * | |
140 | * Return: The type of rate matching @phy supports for @iface, or | |
141 | * %RATE_MATCH_NONE. | |
142 | */ | |
143 | int phy_get_rate_matching(struct phy_device *phydev, | |
144 | phy_interface_t iface) | |
145 | { | |
146 | int ret = RATE_MATCH_NONE; | |
147 | ||
148 | if (phydev->drv->get_rate_matching) { | |
149 | mutex_lock(&phydev->lock); | |
150 | ret = phydev->drv->get_rate_matching(phydev, iface); | |
151 | mutex_unlock(&phydev->lock); | |
152 | } | |
153 | ||
154 | return ret; | |
155 | } | |
156 | EXPORT_SYMBOL_GPL(phy_get_rate_matching); | |
157 | ||
b3df0da8 RD |
158 | /** |
159 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
160 | * @phydev: the phy_device struct | |
161 | * @interrupts: interrupt flags to configure for this @phydev | |
162 | * | |
ad033506 | 163 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 164 | */ |
695bce8f | 165 | static int phy_config_interrupt(struct phy_device *phydev, bool interrupts) |
00db8189 | 166 | { |
695bce8f | 167 | phydev->interrupts = interrupts ? 1 : 0; |
00db8189 | 168 | if (phydev->drv->config_intr) |
e62a768f | 169 | return phydev->drv->config_intr(phydev); |
00db8189 | 170 | |
e62a768f | 171 | return 0; |
00db8189 AF |
172 | } |
173 | ||
002ba705 RK |
174 | /** |
175 | * phy_restart_aneg - restart auto-negotiation | |
176 | * @phydev: target phy_device struct | |
177 | * | |
178 | * Restart the autonegotiation on @phydev. Returns >= 0 on success or | |
179 | * negative errno on error. | |
180 | */ | |
181 | int phy_restart_aneg(struct phy_device *phydev) | |
182 | { | |
183 | int ret; | |
184 | ||
185 | if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0))) | |
186 | ret = genphy_c45_restart_aneg(phydev); | |
187 | else | |
188 | ret = genphy_restart_aneg(phydev); | |
189 | ||
190 | return ret; | |
191 | } | |
192 | EXPORT_SYMBOL_GPL(phy_restart_aneg); | |
00db8189 | 193 | |
b3df0da8 RD |
194 | /** |
195 | * phy_aneg_done - return auto-negotiation status | |
196 | * @phydev: target phy_device struct | |
00db8189 | 197 | * |
76a423a3 FF |
198 | * Description: Return the auto-negotiation status from this @phydev |
199 | * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation | |
200 | * is still pending. | |
00db8189 | 201 | */ |
372788f9 | 202 | int phy_aneg_done(struct phy_device *phydev) |
00db8189 | 203 | { |
65f2767a | 204 | if (phydev->drv && phydev->drv->aneg_done) |
76a423a3 | 205 | return phydev->drv->aneg_done(phydev); |
d7bed825 HK |
206 | else if (phydev->is_c45) |
207 | return genphy_c45_aneg_done(phydev); | |
208 | else | |
209 | return genphy_aneg_done(phydev); | |
00db8189 | 210 | } |
372788f9 | 211 | EXPORT_SYMBOL(phy_aneg_done); |
00db8189 | 212 | |
b3df0da8 | 213 | /** |
d0613037 RK |
214 | * phy_find_valid - find a PHY setting that matches the requested parameters |
215 | * @speed: desired speed | |
216 | * @duplex: desired duplex | |
217 | * @supported: mask of supported link modes | |
00db8189 | 218 | * |
d0613037 RK |
219 | * Locate a supported phy setting that is, in priority order: |
220 | * - an exact match for the specified speed and duplex mode | |
221 | * - a match for the specified speed, or slower speed | |
222 | * - the slowest supported speed | |
223 | * Returns the matched phy_setting entry, or %NULL if no supported phy | |
224 | * settings were found. | |
00db8189 | 225 | */ |
d0613037 | 226 | static const struct phy_setting * |
3c1bcc86 | 227 | phy_find_valid(int speed, int duplex, unsigned long *supported) |
00db8189 | 228 | { |
3c1bcc86 | 229 | return phy_lookup_setting(speed, duplex, supported, false); |
00db8189 AF |
230 | } |
231 | ||
1f9127ca ZB |
232 | /** |
233 | * phy_supported_speeds - return all speeds currently supported by a phy device | |
234 | * @phy: The phy device to return supported speeds of. | |
235 | * @speeds: buffer to store supported speeds in. | |
236 | * @size: size of speeds buffer. | |
237 | * | |
238 | * Description: Returns the number of supported speeds, and fills the speeds | |
239 | * buffer with the supported speeds. If speeds buffer is too small to contain | |
240 | * all currently supported speeds, will return as many speeds as can fit. | |
241 | */ | |
242 | unsigned int phy_supported_speeds(struct phy_device *phy, | |
243 | unsigned int *speeds, | |
244 | unsigned int size) | |
245 | { | |
3c1bcc86 | 246 | return phy_speeds(speeds, size, phy->supported); |
1f9127ca ZB |
247 | } |
248 | ||
54da5a8b GR |
249 | /** |
250 | * phy_check_valid - check if there is a valid PHY setting which matches | |
251 | * speed, duplex, and feature mask | |
252 | * @speed: speed to match | |
253 | * @duplex: duplex to match | |
254 | * @features: A mask of the valid settings | |
255 | * | |
256 | * Description: Returns true if there is a valid setting, false otherwise. | |
257 | */ | |
cf9f6079 | 258 | bool phy_check_valid(int speed, int duplex, unsigned long *features) |
54da5a8b | 259 | { |
3c1bcc86 | 260 | return !!phy_lookup_setting(speed, duplex, features, true); |
54da5a8b | 261 | } |
cf9f6079 | 262 | EXPORT_SYMBOL(phy_check_valid); |
54da5a8b | 263 | |
b3df0da8 RD |
264 | /** |
265 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
266 | * @phydev: the target phy_device struct | |
00db8189 | 267 | * |
b3df0da8 | 268 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 269 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 270 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 271 | */ |
89ff05ec | 272 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 | 273 | { |
d0613037 | 274 | const struct phy_setting *setting; |
00db8189 | 275 | |
3c1bcc86 AL |
276 | setting = phy_find_valid(phydev->speed, phydev->duplex, |
277 | phydev->supported); | |
d0613037 RK |
278 | if (setting) { |
279 | phydev->speed = setting->speed; | |
280 | phydev->duplex = setting->duplex; | |
281 | } else { | |
282 | /* We failed to find anything (no supported speeds?) */ | |
283 | phydev->speed = SPEED_UNKNOWN; | |
284 | phydev->duplex = DUPLEX_UNKNOWN; | |
285 | } | |
00db8189 | 286 | } |
00db8189 | 287 | |
5514174f | 288 | void phy_ethtool_ksettings_get(struct phy_device *phydev, |
289 | struct ethtool_link_ksettings *cmd) | |
2d55173e | 290 | { |
c10a485c | 291 | mutex_lock(&phydev->lock); |
3c1bcc86 AL |
292 | linkmode_copy(cmd->link_modes.supported, phydev->supported); |
293 | linkmode_copy(cmd->link_modes.advertising, phydev->advertising); | |
c0ec3c27 | 294 | linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising); |
2d55173e PR |
295 | |
296 | cmd->base.speed = phydev->speed; | |
297 | cmd->base.duplex = phydev->duplex; | |
bdbdac76 OR |
298 | cmd->base.master_slave_cfg = phydev->master_slave_get; |
299 | cmd->base.master_slave_state = phydev->master_slave_state; | |
0c3e10cb | 300 | cmd->base.rate_matching = phydev->rate_matching; |
2d55173e PR |
301 | if (phydev->interface == PHY_INTERFACE_MODE_MOCA) |
302 | cmd->base.port = PORT_BNC; | |
303 | else | |
4217a64e | 304 | cmd->base.port = phydev->port; |
ceb62813 FF |
305 | cmd->base.transceiver = phy_is_internal(phydev) ? |
306 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
2d55173e PR |
307 | cmd->base.phy_address = phydev->mdio.addr; |
308 | cmd->base.autoneg = phydev->autoneg; | |
1004ee61 RL |
309 | cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; |
310 | cmd->base.eth_tp_mdix = phydev->mdix; | |
c10a485c | 311 | mutex_unlock(&phydev->lock); |
2d55173e PR |
312 | } |
313 | EXPORT_SYMBOL(phy_ethtool_ksettings_get); | |
00db8189 | 314 | |
b3df0da8 RD |
315 | /** |
316 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
317 | * @phydev: the phy_device struct | |
00c7d920 | 318 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
319 | * @cmd: ioctl cmd to execute |
320 | * | |
321 | * Note that this function is currently incompatible with the | |
00db8189 | 322 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 323 | * current state. Use at own risk. |
00db8189 | 324 | */ |
2f53e904 | 325 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 326 | { |
28b04113 | 327 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
446e2305 KM |
328 | struct kernel_hwtstamp_config kernel_cfg; |
329 | struct netlink_ext_ack extack = {}; | |
00db8189 | 330 | u16 val = mii_data->val_in; |
79ce0477 | 331 | bool change_autoneg = false; |
446e2305 | 332 | struct hwtstamp_config cfg; |
cdea04c2 | 333 | int prtad, devad; |
446e2305 | 334 | int ret; |
00db8189 AF |
335 | |
336 | switch (cmd) { | |
337 | case SIOCGMIIPHY: | |
e5a03bfd | 338 | mii_data->phy_id = phydev->mdio.addr; |
df561f66 | 339 | fallthrough; |
c6d6a511 | 340 | |
00db8189 | 341 | case SIOCGMIIREG: |
cdea04c2 RK |
342 | if (mdio_phy_id_is_c45(mii_data->phy_id)) { |
343 | prtad = mdio_phy_id_prtad(mii_data->phy_id); | |
344 | devad = mdio_phy_id_devad(mii_data->phy_id); | |
569bf6d4 NS |
345 | ret = mdiobus_c45_read(phydev->mdio.bus, prtad, devad, |
346 | mii_data->reg_num); | |
347 | ||
cdea04c2 | 348 | } else { |
569bf6d4 NS |
349 | ret = mdiobus_read(phydev->mdio.bus, mii_data->phy_id, |
350 | mii_data->reg_num); | |
cdea04c2 | 351 | } |
569bf6d4 NS |
352 | |
353 | if (ret < 0) | |
354 | return ret; | |
355 | ||
356 | mii_data->val_out = ret; | |
357 | ||
e62a768f | 358 | return 0; |
00db8189 AF |
359 | |
360 | case SIOCSMIIREG: | |
cdea04c2 RK |
361 | if (mdio_phy_id_is_c45(mii_data->phy_id)) { |
362 | prtad = mdio_phy_id_prtad(mii_data->phy_id); | |
363 | devad = mdio_phy_id_devad(mii_data->phy_id); | |
cdea04c2 RK |
364 | } else { |
365 | prtad = mii_data->phy_id; | |
366 | devad = mii_data->reg_num; | |
367 | } | |
368 | if (prtad == phydev->mdio.addr) { | |
369 | switch (devad) { | |
00db8189 | 370 | case MII_BMCR: |
79ce0477 BH |
371 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { |
372 | if (phydev->autoneg == AUTONEG_ENABLE) | |
373 | change_autoneg = true; | |
00db8189 | 374 | phydev->autoneg = AUTONEG_DISABLE; |
79ce0477 BH |
375 | if (val & BMCR_FULLDPLX) |
376 | phydev->duplex = DUPLEX_FULL; | |
377 | else | |
378 | phydev->duplex = DUPLEX_HALF; | |
379 | if (val & BMCR_SPEED1000) | |
380 | phydev->speed = SPEED_1000; | |
381 | else if (val & BMCR_SPEED100) | |
382 | phydev->speed = SPEED_100; | |
383 | else phydev->speed = SPEED_10; | |
169d7a40 | 384 | } else { |
79ce0477 BH |
385 | if (phydev->autoneg == AUTONEG_DISABLE) |
386 | change_autoneg = true; | |
00db8189 | 387 | phydev->autoneg = AUTONEG_ENABLE; |
79ce0477 | 388 | } |
00db8189 AF |
389 | break; |
390 | case MII_ADVERTISE: | |
9db299c7 AL |
391 | mii_adv_mod_linkmode_adv_t(phydev->advertising, |
392 | val); | |
79ce0477 | 393 | change_autoneg = true; |
00db8189 | 394 | break; |
4cf6c57e RK |
395 | case MII_CTRL1000: |
396 | mii_ctrl1000_mod_linkmode_adv_t(phydev->advertising, | |
397 | val); | |
398 | change_autoneg = true; | |
399 | break; | |
00db8189 AF |
400 | default: |
401 | /* do nothing */ | |
402 | break; | |
403 | } | |
404 | } | |
405 | ||
260bdfea AL |
406 | if (mdio_phy_id_is_c45(mii_data->phy_id)) |
407 | mdiobus_c45_write(phydev->mdio.bus, prtad, devad, | |
408 | mii_data->reg_num, val); | |
409 | else | |
410 | mdiobus_write(phydev->mdio.bus, prtad, devad, val); | |
af1dc13e | 411 | |
cdea04c2 RK |
412 | if (prtad == phydev->mdio.addr && |
413 | devad == MII_BMCR && | |
2613f95f | 414 | val & BMCR_RESET) |
e62a768f | 415 | return phy_init_hw(phydev); |
79ce0477 BH |
416 | |
417 | if (change_autoneg) | |
418 | return phy_start_aneg(phydev); | |
419 | ||
e62a768f | 420 | return 0; |
dda93b48 | 421 | |
c1f19b51 | 422 | case SIOCSHWTSTAMP: |
446e2305 KM |
423 | if (phydev->mii_ts && phydev->mii_ts->hwtstamp) { |
424 | if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) | |
425 | return -EFAULT; | |
426 | ||
427 | hwtstamp_config_to_kernel(&kernel_cfg, &cfg); | |
428 | ret = phydev->mii_ts->hwtstamp(phydev->mii_ts, &kernel_cfg, &extack); | |
429 | if (ret) | |
430 | return ret; | |
431 | ||
432 | hwtstamp_config_from_kernel(&cfg, &kernel_cfg); | |
433 | if (copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg))) | |
434 | return -EFAULT; | |
435 | ||
436 | return 0; | |
437 | } | |
df561f66 | 438 | fallthrough; |
c1f19b51 | 439 | |
dda93b48 | 440 | default: |
c6d6a511 | 441 | return -EOPNOTSUPP; |
00db8189 | 442 | } |
00db8189 | 443 | } |
680e9fe9 | 444 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 445 | |
2ab1d925 | 446 | /** |
a7605370 | 447 | * phy_do_ioctl - generic ndo_eth_ioctl implementation |
2ab1d925 HK |
448 | * @dev: the net_device struct |
449 | * @ifr: &struct ifreq for socket ioctl's | |
450 | * @cmd: ioctl cmd to execute | |
451 | */ | |
bbbf8430 | 452 | int phy_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
2ab1d925 | 453 | { |
bbbf8430 | 454 | if (!dev->phydev) |
2ab1d925 HK |
455 | return -ENODEV; |
456 | ||
457 | return phy_mii_ioctl(dev->phydev, ifr, cmd); | |
458 | } | |
bbbf8430 HK |
459 | EXPORT_SYMBOL(phy_do_ioctl); |
460 | ||
4069a572 | 461 | /** |
a7605370 | 462 | * phy_do_ioctl_running - generic ndo_eth_ioctl implementation but test first |
4069a572 AL |
463 | * |
464 | * @dev: the net_device struct | |
465 | * @ifr: &struct ifreq for socket ioctl's | |
466 | * @cmd: ioctl cmd to execute | |
467 | * | |
468 | * Same as phy_do_ioctl, but ensures that net_device is running before | |
469 | * handling the ioctl. | |
470 | */ | |
bbbf8430 HK |
471 | int phy_do_ioctl_running(struct net_device *dev, struct ifreq *ifr, int cmd) |
472 | { | |
473 | if (!netif_running(dev)) | |
474 | return -ENODEV; | |
475 | ||
476 | return phy_do_ioctl(dev, ifr, cmd); | |
477 | } | |
3231e5d2 | 478 | EXPORT_SYMBOL(phy_do_ioctl_running); |
2ab1d925 | 479 | |
60495b66 VO |
480 | /** |
481 | * __phy_hwtstamp_get - Get hardware timestamping configuration from PHY | |
482 | * | |
483 | * @phydev: the PHY device structure | |
484 | * @config: structure holding the timestamping configuration | |
485 | * | |
486 | * Query the PHY device for its current hardware timestamping configuration. | |
487 | */ | |
488 | int __phy_hwtstamp_get(struct phy_device *phydev, | |
489 | struct kernel_hwtstamp_config *config) | |
490 | { | |
491 | if (!phydev) | |
492 | return -ENODEV; | |
493 | ||
430dc325 | 494 | return -EOPNOTSUPP; |
60495b66 VO |
495 | } |
496 | ||
497 | /** | |
498 | * __phy_hwtstamp_set - Modify PHY hardware timestamping configuration | |
499 | * | |
500 | * @phydev: the PHY device structure | |
501 | * @config: structure holding the timestamping configuration | |
502 | * @extack: netlink extended ack structure, for error reporting | |
503 | */ | |
504 | int __phy_hwtstamp_set(struct phy_device *phydev, | |
505 | struct kernel_hwtstamp_config *config, | |
506 | struct netlink_ext_ack *extack) | |
507 | { | |
508 | if (!phydev) | |
509 | return -ENODEV; | |
510 | ||
430dc325 KM |
511 | if (phydev->mii_ts && phydev->mii_ts->hwtstamp) |
512 | return phydev->mii_ts->hwtstamp(phydev->mii_ts, config, extack); | |
513 | ||
514 | return -EOPNOTSUPP; | |
60495b66 VO |
515 | } |
516 | ||
4069a572 AL |
517 | /** |
518 | * phy_queue_state_machine - Trigger the state machine to run soon | |
519 | * | |
520 | * @phydev: the phy_device struct | |
521 | * @jiffies: Run the state machine after these jiffies | |
522 | */ | |
97b33bdf | 523 | void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies) |
a3320bcf HK |
524 | { |
525 | mod_delayed_work(system_power_efficient_wq, &phydev->state_queue, | |
97b33bdf | 526 | jiffies); |
a3320bcf | 527 | } |
97b33bdf | 528 | EXPORT_SYMBOL(phy_queue_state_machine); |
a3320bcf | 529 | |
4069a572 | 530 | /** |
69280228 | 531 | * phy_trigger_machine - Trigger the state machine to run now |
4069a572 AL |
532 | * |
533 | * @phydev: the phy_device struct | |
534 | */ | |
293e9a3d | 535 | void phy_trigger_machine(struct phy_device *phydev) |
a3320bcf HK |
536 | { |
537 | phy_queue_state_machine(phydev, 0); | |
538 | } | |
293e9a3d | 539 | EXPORT_SYMBOL(phy_trigger_machine); |
a3320bcf | 540 | |
a68a8138 AL |
541 | static void phy_abort_cable_test(struct phy_device *phydev) |
542 | { | |
543 | int err; | |
544 | ||
1dd3f212 AL |
545 | ethnl_cable_test_finished(phydev); |
546 | ||
a68a8138 AL |
547 | err = phy_init_hw(phydev); |
548 | if (err) | |
549 | phydev_err(phydev, "Error while aborting cable test"); | |
550 | } | |
551 | ||
4069a572 AL |
552 | /** |
553 | * phy_ethtool_get_strings - Get the statistic counter names | |
554 | * | |
555 | * @phydev: the phy_device struct | |
556 | * @data: Where to put the strings | |
557 | */ | |
17809516 FF |
558 | int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data) |
559 | { | |
560 | if (!phydev->drv) | |
561 | return -EIO; | |
562 | ||
563 | mutex_lock(&phydev->lock); | |
564 | phydev->drv->get_strings(phydev, data); | |
565 | mutex_unlock(&phydev->lock); | |
566 | ||
567 | return 0; | |
568 | } | |
569 | EXPORT_SYMBOL(phy_ethtool_get_strings); | |
570 | ||
4069a572 AL |
571 | /** |
572 | * phy_ethtool_get_sset_count - Get the number of statistic counters | |
573 | * | |
574 | * @phydev: the phy_device struct | |
575 | */ | |
17809516 FF |
576 | int phy_ethtool_get_sset_count(struct phy_device *phydev) |
577 | { | |
578 | int ret; | |
579 | ||
580 | if (!phydev->drv) | |
581 | return -EIO; | |
582 | ||
583 | if (phydev->drv->get_sset_count && | |
584 | phydev->drv->get_strings && | |
585 | phydev->drv->get_stats) { | |
586 | mutex_lock(&phydev->lock); | |
587 | ret = phydev->drv->get_sset_count(phydev); | |
588 | mutex_unlock(&phydev->lock); | |
589 | ||
590 | return ret; | |
591 | } | |
592 | ||
593 | return -EOPNOTSUPP; | |
594 | } | |
595 | EXPORT_SYMBOL(phy_ethtool_get_sset_count); | |
596 | ||
4069a572 AL |
597 | /** |
598 | * phy_ethtool_get_stats - Get the statistic counters | |
599 | * | |
600 | * @phydev: the phy_device struct | |
601 | * @stats: What counters to get | |
602 | * @data: Where to store the counters | |
603 | */ | |
17809516 FF |
604 | int phy_ethtool_get_stats(struct phy_device *phydev, |
605 | struct ethtool_stats *stats, u64 *data) | |
606 | { | |
607 | if (!phydev->drv) | |
608 | return -EIO; | |
609 | ||
610 | mutex_lock(&phydev->lock); | |
611 | phydev->drv->get_stats(phydev, stats, data); | |
612 | mutex_unlock(&phydev->lock); | |
613 | ||
614 | return 0; | |
615 | } | |
616 | EXPORT_SYMBOL(phy_ethtool_get_stats); | |
617 | ||
a23a1e57 PB |
618 | /** |
619 | * phy_ethtool_get_plca_cfg - Get PLCA RS configuration | |
620 | * @phydev: the phy_device struct | |
621 | * @plca_cfg: where to store the retrieved configuration | |
622 | * | |
623 | * Retrieve the PLCA configuration from the PHY. Return 0 on success or a | |
624 | * negative value if an error occurred. | |
625 | */ | |
626 | int phy_ethtool_get_plca_cfg(struct phy_device *phydev, | |
627 | struct phy_plca_cfg *plca_cfg) | |
628 | { | |
629 | int ret; | |
630 | ||
631 | if (!phydev->drv) { | |
632 | ret = -EIO; | |
633 | goto out; | |
634 | } | |
635 | ||
636 | if (!phydev->drv->get_plca_cfg) { | |
637 | ret = -EOPNOTSUPP; | |
638 | goto out; | |
639 | } | |
640 | ||
641 | mutex_lock(&phydev->lock); | |
642 | ret = phydev->drv->get_plca_cfg(phydev, plca_cfg); | |
643 | ||
644 | mutex_unlock(&phydev->lock); | |
645 | out: | |
646 | return ret; | |
647 | } | |
648 | ||
649 | /** | |
650 | * plca_check_valid - Check PLCA configuration before enabling | |
651 | * @phydev: the phy_device struct | |
652 | * @plca_cfg: current PLCA configuration | |
653 | * @extack: extack for reporting useful error messages | |
654 | * | |
655 | * Checks whether the PLCA and PHY configuration are consistent and it is safe | |
656 | * to enable PLCA. Returns 0 on success or a negative value if the PLCA or PHY | |
657 | * configuration is not consistent. | |
658 | */ | |
659 | static int plca_check_valid(struct phy_device *phydev, | |
660 | const struct phy_plca_cfg *plca_cfg, | |
661 | struct netlink_ext_ack *extack) | |
662 | { | |
663 | int ret = 0; | |
664 | ||
665 | if (!linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT1S_P2MP_Half_BIT, | |
666 | phydev->advertising)) { | |
667 | ret = -EOPNOTSUPP; | |
668 | NL_SET_ERR_MSG(extack, | |
669 | "Point to Multi-Point mode is not enabled"); | |
670 | } else if (plca_cfg->node_id >= 255) { | |
671 | NL_SET_ERR_MSG(extack, "PLCA node ID is not set"); | |
672 | ret = -EINVAL; | |
673 | } | |
674 | ||
675 | return ret; | |
676 | } | |
677 | ||
678 | /** | |
679 | * phy_ethtool_set_plca_cfg - Set PLCA RS configuration | |
680 | * @phydev: the phy_device struct | |
681 | * @plca_cfg: new PLCA configuration to apply | |
682 | * @extack: extack for reporting useful error messages | |
683 | * | |
684 | * Sets the PLCA configuration in the PHY. Return 0 on success or a | |
685 | * negative value if an error occurred. | |
686 | */ | |
687 | int phy_ethtool_set_plca_cfg(struct phy_device *phydev, | |
688 | const struct phy_plca_cfg *plca_cfg, | |
689 | struct netlink_ext_ack *extack) | |
690 | { | |
691 | struct phy_plca_cfg *curr_plca_cfg; | |
692 | int ret; | |
693 | ||
694 | if (!phydev->drv) { | |
695 | ret = -EIO; | |
696 | goto out; | |
697 | } | |
698 | ||
699 | if (!phydev->drv->set_plca_cfg || | |
700 | !phydev->drv->get_plca_cfg) { | |
701 | ret = -EOPNOTSUPP; | |
702 | goto out; | |
703 | } | |
704 | ||
705 | curr_plca_cfg = kmalloc(sizeof(*curr_plca_cfg), GFP_KERNEL); | |
706 | if (!curr_plca_cfg) { | |
707 | ret = -ENOMEM; | |
708 | goto out; | |
709 | } | |
710 | ||
711 | mutex_lock(&phydev->lock); | |
712 | ||
713 | ret = phydev->drv->get_plca_cfg(phydev, curr_plca_cfg); | |
714 | if (ret) | |
715 | goto out_drv; | |
716 | ||
717 | if (curr_plca_cfg->enabled < 0 && plca_cfg->enabled >= 0) { | |
718 | NL_SET_ERR_MSG(extack, | |
719 | "PHY does not support changing the PLCA 'enable' attribute"); | |
720 | ret = -EINVAL; | |
721 | goto out_drv; | |
722 | } | |
723 | ||
724 | if (curr_plca_cfg->node_id < 0 && plca_cfg->node_id >= 0) { | |
725 | NL_SET_ERR_MSG(extack, | |
726 | "PHY does not support changing the PLCA 'local node ID' attribute"); | |
727 | ret = -EINVAL; | |
728 | goto out_drv; | |
729 | } | |
730 | ||
731 | if (curr_plca_cfg->node_cnt < 0 && plca_cfg->node_cnt >= 0) { | |
732 | NL_SET_ERR_MSG(extack, | |
733 | "PHY does not support changing the PLCA 'node count' attribute"); | |
734 | ret = -EINVAL; | |
735 | goto out_drv; | |
736 | } | |
737 | ||
738 | if (curr_plca_cfg->to_tmr < 0 && plca_cfg->to_tmr >= 0) { | |
739 | NL_SET_ERR_MSG(extack, | |
740 | "PHY does not support changing the PLCA 'TO timer' attribute"); | |
741 | ret = -EINVAL; | |
742 | goto out_drv; | |
743 | } | |
744 | ||
745 | if (curr_plca_cfg->burst_cnt < 0 && plca_cfg->burst_cnt >= 0) { | |
746 | NL_SET_ERR_MSG(extack, | |
747 | "PHY does not support changing the PLCA 'burst count' attribute"); | |
748 | ret = -EINVAL; | |
749 | goto out_drv; | |
750 | } | |
751 | ||
752 | if (curr_plca_cfg->burst_tmr < 0 && plca_cfg->burst_tmr >= 0) { | |
753 | NL_SET_ERR_MSG(extack, | |
754 | "PHY does not support changing the PLCA 'burst timer' attribute"); | |
755 | ret = -EINVAL; | |
756 | goto out_drv; | |
757 | } | |
758 | ||
759 | // if enabling PLCA, perform a few sanity checks | |
760 | if (plca_cfg->enabled > 0) { | |
761 | // allow setting node_id concurrently with enabled | |
762 | if (plca_cfg->node_id >= 0) | |
763 | curr_plca_cfg->node_id = plca_cfg->node_id; | |
764 | ||
765 | ret = plca_check_valid(phydev, curr_plca_cfg, extack); | |
766 | if (ret) | |
767 | goto out_drv; | |
768 | } | |
769 | ||
770 | ret = phydev->drv->set_plca_cfg(phydev, plca_cfg); | |
771 | ||
772 | out_drv: | |
773 | kfree(curr_plca_cfg); | |
774 | mutex_unlock(&phydev->lock); | |
775 | out: | |
776 | return ret; | |
777 | } | |
778 | ||
779 | /** | |
780 | * phy_ethtool_get_plca_status - Get PLCA RS status information | |
781 | * @phydev: the phy_device struct | |
782 | * @plca_st: where to store the retrieved status information | |
783 | * | |
784 | * Retrieve the PLCA status information from the PHY. Return 0 on success or a | |
785 | * negative value if an error occurred. | |
786 | */ | |
787 | int phy_ethtool_get_plca_status(struct phy_device *phydev, | |
788 | struct phy_plca_status *plca_st) | |
789 | { | |
790 | int ret; | |
791 | ||
792 | if (!phydev->drv) { | |
793 | ret = -EIO; | |
794 | goto out; | |
795 | } | |
796 | ||
797 | if (!phydev->drv->get_plca_status) { | |
798 | ret = -EOPNOTSUPP; | |
799 | goto out; | |
800 | } | |
801 | ||
802 | mutex_lock(&phydev->lock); | |
803 | ret = phydev->drv->get_plca_status(phydev, plca_st); | |
804 | ||
805 | mutex_unlock(&phydev->lock); | |
806 | out: | |
807 | return ret; | |
808 | } | |
809 | ||
4069a572 AL |
810 | /** |
811 | * phy_start_cable_test - Start a cable test | |
812 | * | |
813 | * @phydev: the phy_device struct | |
814 | * @extack: extack for reporting useful error messages | |
815 | */ | |
a68a8138 AL |
816 | int phy_start_cable_test(struct phy_device *phydev, |
817 | struct netlink_ext_ack *extack) | |
818 | { | |
4a459bdc | 819 | struct net_device *dev = phydev->attached_dev; |
1dd3f212 | 820 | int err = -ENOMEM; |
a68a8138 AL |
821 | |
822 | if (!(phydev->drv && | |
823 | phydev->drv->cable_test_start && | |
824 | phydev->drv->cable_test_get_status)) { | |
825 | NL_SET_ERR_MSG(extack, | |
826 | "PHY driver does not support cable testing"); | |
827 | return -EOPNOTSUPP; | |
828 | } | |
829 | ||
830 | mutex_lock(&phydev->lock); | |
831 | if (phydev->state == PHY_CABLETEST) { | |
832 | NL_SET_ERR_MSG(extack, | |
833 | "PHY already performing a test"); | |
834 | err = -EBUSY; | |
835 | goto out; | |
836 | } | |
837 | ||
838 | if (phydev->state < PHY_UP || | |
839 | phydev->state > PHY_CABLETEST) { | |
840 | NL_SET_ERR_MSG(extack, | |
841 | "PHY not configured. Try setting interface up"); | |
842 | err = -EBUSY; | |
843 | goto out; | |
844 | } | |
845 | ||
1a644de2 | 846 | err = ethnl_cable_test_alloc(phydev, ETHTOOL_MSG_CABLE_TEST_NTF); |
1dd3f212 AL |
847 | if (err) |
848 | goto out; | |
849 | ||
a68a8138 | 850 | /* Mark the carrier down until the test is complete */ |
a307593a | 851 | phy_link_down(phydev); |
a68a8138 | 852 | |
4a459bdc | 853 | netif_testing_on(dev); |
a68a8138 AL |
854 | err = phydev->drv->cable_test_start(phydev); |
855 | if (err) { | |
4a459bdc | 856 | netif_testing_off(dev); |
a68a8138 | 857 | phy_link_up(phydev); |
1dd3f212 | 858 | goto out_free; |
a68a8138 AL |
859 | } |
860 | ||
861 | phydev->state = PHY_CABLETEST; | |
862 | ||
97c22438 AL |
863 | if (phy_polling_mode(phydev)) |
864 | phy_trigger_machine(phydev); | |
1dd3f212 AL |
865 | |
866 | mutex_unlock(&phydev->lock); | |
867 | ||
868 | return 0; | |
869 | ||
870 | out_free: | |
871 | ethnl_cable_test_free(phydev); | |
a68a8138 AL |
872 | out: |
873 | mutex_unlock(&phydev->lock); | |
874 | ||
875 | return err; | |
876 | } | |
877 | EXPORT_SYMBOL(phy_start_cable_test); | |
878 | ||
4069a572 AL |
879 | /** |
880 | * phy_start_cable_test_tdr - Start a raw TDR cable test | |
881 | * | |
882 | * @phydev: the phy_device struct | |
883 | * @extack: extack for reporting useful error messages | |
884 | * @config: Configuration of the test to run | |
885 | */ | |
1a644de2 | 886 | int phy_start_cable_test_tdr(struct phy_device *phydev, |
f2bc8ad3 AL |
887 | struct netlink_ext_ack *extack, |
888 | const struct phy_tdr_config *config) | |
1a644de2 AL |
889 | { |
890 | struct net_device *dev = phydev->attached_dev; | |
891 | int err = -ENOMEM; | |
892 | ||
893 | if (!(phydev->drv && | |
894 | phydev->drv->cable_test_tdr_start && | |
895 | phydev->drv->cable_test_get_status)) { | |
896 | NL_SET_ERR_MSG(extack, | |
897 | "PHY driver does not support cable test TDR"); | |
898 | return -EOPNOTSUPP; | |
899 | } | |
900 | ||
901 | mutex_lock(&phydev->lock); | |
902 | if (phydev->state == PHY_CABLETEST) { | |
903 | NL_SET_ERR_MSG(extack, | |
904 | "PHY already performing a test"); | |
905 | err = -EBUSY; | |
906 | goto out; | |
907 | } | |
908 | ||
909 | if (phydev->state < PHY_UP || | |
910 | phydev->state > PHY_CABLETEST) { | |
911 | NL_SET_ERR_MSG(extack, | |
912 | "PHY not configured. Try setting interface up"); | |
913 | err = -EBUSY; | |
914 | goto out; | |
915 | } | |
916 | ||
917 | err = ethnl_cable_test_alloc(phydev, ETHTOOL_MSG_CABLE_TEST_TDR_NTF); | |
918 | if (err) | |
919 | goto out; | |
920 | ||
921 | /* Mark the carrier down until the test is complete */ | |
922 | phy_link_down(phydev); | |
923 | ||
924 | netif_testing_on(dev); | |
f2bc8ad3 | 925 | err = phydev->drv->cable_test_tdr_start(phydev, config); |
1a644de2 AL |
926 | if (err) { |
927 | netif_testing_off(dev); | |
928 | phy_link_up(phydev); | |
929 | goto out_free; | |
930 | } | |
931 | ||
932 | phydev->state = PHY_CABLETEST; | |
933 | ||
934 | if (phy_polling_mode(phydev)) | |
935 | phy_trigger_machine(phydev); | |
936 | ||
937 | mutex_unlock(&phydev->lock); | |
938 | ||
939 | return 0; | |
940 | ||
941 | out_free: | |
942 | ethnl_cable_test_free(phydev); | |
943 | out: | |
944 | mutex_unlock(&phydev->lock); | |
945 | ||
946 | return err; | |
947 | } | |
948 | EXPORT_SYMBOL(phy_start_cable_test_tdr); | |
949 | ||
014068dc | 950 | int phy_config_aneg(struct phy_device *phydev) |
76299580 HK |
951 | { |
952 | if (phydev->drv->config_aneg) | |
953 | return phydev->drv->config_aneg(phydev); | |
34786005 CG |
954 | |
955 | /* Clause 45 PHYs that don't implement Clause 22 registers are not | |
956 | * allowed to call genphy_config_aneg() | |
957 | */ | |
958 | if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0))) | |
94acaeb5 | 959 | return genphy_c45_config_aneg(phydev); |
34786005 CG |
960 | |
961 | return genphy_config_aneg(phydev); | |
76299580 | 962 | } |
014068dc | 963 | EXPORT_SYMBOL(phy_config_aneg); |
76299580 | 964 | |
74a992b3 HK |
965 | /** |
966 | * phy_check_link_status - check link status and set state accordingly | |
967 | * @phydev: the phy_device struct | |
968 | * | |
969 | * Description: Check for link and whether autoneg was triggered / is running | |
970 | * and set state accordingly | |
971 | */ | |
972 | static int phy_check_link_status(struct phy_device *phydev) | |
973 | { | |
974 | int err; | |
975 | ||
e6e918d4 | 976 | lockdep_assert_held(&phydev->lock); |
74a992b3 | 977 | |
fe4a7a41 JA |
978 | /* Keep previous state if loopback is enabled because some PHYs |
979 | * report that Link is Down when loopback is enabled. | |
980 | */ | |
981 | if (phydev->loopback_enabled) | |
982 | return 0; | |
983 | ||
74a992b3 HK |
984 | err = phy_read_status(phydev); |
985 | if (err) | |
986 | return err; | |
987 | ||
988 | if (phydev->link && phydev->state != PHY_RUNNING) { | |
5eee3bb7 | 989 | phy_check_downshift(phydev); |
74a992b3 | 990 | phydev->state = PHY_RUNNING; |
e3b6876a AL |
991 | err = genphy_c45_eee_is_active(phydev, |
992 | NULL, NULL, NULL); | |
c786459f | 993 | if (err <= 0) |
e3b6876a AL |
994 | phydev->enable_tx_lpi = false; |
995 | else | |
c786459f | 996 | phydev->enable_tx_lpi = phydev->eee_cfg.tx_lpi_enabled; |
3e43b903 | 997 | |
74a992b3 HK |
998 | phy_link_up(phydev); |
999 | } else if (!phydev->link && phydev->state != PHY_NOLINK) { | |
1000 | phydev->state = PHY_NOLINK; | |
e3b6876a | 1001 | phydev->enable_tx_lpi = false; |
a307593a | 1002 | phy_link_down(phydev); |
74a992b3 HK |
1003 | } |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
b3df0da8 | 1008 | /** |
707293a5 | 1009 | * _phy_start_aneg - start auto-negotiation for this PHY device |
b3df0da8 | 1010 | * @phydev: the phy_device struct |
e1393456 | 1011 | * |
b3df0da8 RD |
1012 | * Description: Sanitizes the settings (if we're not autonegotiating |
1013 | * them), and then calls the driver's config_aneg function. | |
1014 | * If the PHYCONTROL Layer is operating, we change the state to | |
1015 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 | 1016 | */ |
6a23c555 | 1017 | int _phy_start_aneg(struct phy_device *phydev) |
e1393456 AF |
1018 | { |
1019 | int err; | |
1020 | ||
707293a5 AL |
1021 | lockdep_assert_held(&phydev->lock); |
1022 | ||
25149ef9 FF |
1023 | if (!phydev->drv) |
1024 | return -EIO; | |
1025 | ||
e1393456 AF |
1026 | if (AUTONEG_DISABLE == phydev->autoneg) |
1027 | phy_sanitize_settings(phydev); | |
1028 | ||
76299580 | 1029 | err = phy_config_aneg(phydev); |
e1393456 | 1030 | if (err < 0) |
707293a5 | 1031 | return err; |
e1393456 | 1032 | |
2bd229df HK |
1033 | if (phy_is_started(phydev)) |
1034 | err = phy_check_link_status(phydev); | |
707293a5 AL |
1035 | |
1036 | return err; | |
1037 | } | |
6a23c555 | 1038 | EXPORT_SYMBOL(_phy_start_aneg); |
707293a5 AL |
1039 | |
1040 | /** | |
1041 | * phy_start_aneg - start auto-negotiation for this PHY device | |
1042 | * @phydev: the phy_device struct | |
1043 | * | |
1044 | * Description: Sanitizes the settings (if we're not autonegotiating | |
1045 | * them), and then calls the driver's config_aneg function. | |
1046 | * If the PHYCONTROL Layer is operating, we change the state to | |
1047 | * reflect the beginning of Auto-negotiation or forcing. | |
1048 | */ | |
1049 | int phy_start_aneg(struct phy_device *phydev) | |
1050 | { | |
1051 | int err; | |
1052 | ||
1053 | mutex_lock(&phydev->lock); | |
1054 | err = _phy_start_aneg(phydev); | |
35b5f6b1 | 1055 | mutex_unlock(&phydev->lock); |
f555f34f | 1056 | |
e1393456 AF |
1057 | return err; |
1058 | } | |
1059 | EXPORT_SYMBOL(phy_start_aneg); | |
1060 | ||
2b9672dd HK |
1061 | static int phy_poll_aneg_done(struct phy_device *phydev) |
1062 | { | |
1063 | unsigned int retries = 100; | |
1064 | int ret; | |
1065 | ||
1066 | do { | |
1067 | msleep(100); | |
1068 | ret = phy_aneg_done(phydev); | |
1069 | } while (!ret && --retries); | |
1070 | ||
1071 | if (!ret) | |
1072 | return -ETIMEDOUT; | |
1073 | ||
1074 | return ret < 0 ? ret : 0; | |
1075 | } | |
1076 | ||
64cd92d5 AL |
1077 | int phy_ethtool_ksettings_set(struct phy_device *phydev, |
1078 | const struct ethtool_link_ksettings *cmd) | |
1079 | { | |
1080 | __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); | |
1081 | u8 autoneg = cmd->base.autoneg; | |
1082 | u8 duplex = cmd->base.duplex; | |
1083 | u32 speed = cmd->base.speed; | |
1084 | ||
1085 | if (cmd->base.phy_address != phydev->mdio.addr) | |
1086 | return -EINVAL; | |
1087 | ||
1088 | linkmode_copy(advertising, cmd->link_modes.advertising); | |
1089 | ||
1090 | /* We make sure that we don't pass unsupported values in to the PHY */ | |
1091 | linkmode_and(advertising, advertising, phydev->supported); | |
1092 | ||
1093 | /* Verify the settings we care about. */ | |
1094 | if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) | |
1095 | return -EINVAL; | |
1096 | ||
d4c89767 DK |
1097 | if (autoneg == AUTONEG_ENABLE && |
1098 | (linkmode_empty(advertising) || | |
1099 | !linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, | |
1100 | phydev->supported))) | |
64cd92d5 AL |
1101 | return -EINVAL; |
1102 | ||
1103 | if (autoneg == AUTONEG_DISABLE && | |
1104 | ((speed != SPEED_1000 && | |
1105 | speed != SPEED_100 && | |
1106 | speed != SPEED_10) || | |
1107 | (duplex != DUPLEX_HALF && | |
1108 | duplex != DUPLEX_FULL))) | |
1109 | return -EINVAL; | |
1110 | ||
af1a02aa | 1111 | mutex_lock(&phydev->lock); |
64cd92d5 AL |
1112 | phydev->autoneg = autoneg; |
1113 | ||
1114 | if (autoneg == AUTONEG_DISABLE) { | |
1115 | phydev->speed = speed; | |
1116 | phydev->duplex = duplex; | |
1117 | } | |
1118 | ||
1119 | linkmode_copy(phydev->advertising, advertising); | |
1120 | ||
1121 | linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, | |
1122 | phydev->advertising, autoneg == AUTONEG_ENABLE); | |
1123 | ||
1124 | phydev->master_slave_set = cmd->base.master_slave_cfg; | |
1125 | phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; | |
1126 | ||
1127 | /* Restart the PHY */ | |
a4db9055 HK |
1128 | if (phy_is_started(phydev)) { |
1129 | phydev->state = PHY_UP; | |
1130 | phy_trigger_machine(phydev); | |
1131 | } else { | |
1132 | _phy_start_aneg(phydev); | |
1133 | } | |
64cd92d5 | 1134 | |
af1a02aa | 1135 | mutex_unlock(&phydev->lock); |
64cd92d5 AL |
1136 | return 0; |
1137 | } | |
1138 | EXPORT_SYMBOL(phy_ethtool_ksettings_set); | |
1139 | ||
2b9672dd HK |
1140 | /** |
1141 | * phy_speed_down - set speed to lowest speed supported by both link partners | |
1142 | * @phydev: the phy_device struct | |
1143 | * @sync: perform action synchronously | |
1144 | * | |
1145 | * Description: Typically used to save energy when waiting for a WoL packet | |
1146 | * | |
1147 | * WARNING: Setting sync to false may cause the system being unable to suspend | |
1148 | * in case the PHY generates an interrupt when finishing the autonegotiation. | |
1149 | * This interrupt may wake up the system immediately after suspend. | |
1150 | * Therefore use sync = false only if you're sure it's safe with the respective | |
1151 | * network chip. | |
1152 | */ | |
1153 | int phy_speed_down(struct phy_device *phydev, bool sync) | |
1154 | { | |
65b27995 | 1155 | __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp); |
2f987d48 AL |
1156 | int ret = 0; |
1157 | ||
1158 | mutex_lock(&phydev->lock); | |
2b9672dd HK |
1159 | |
1160 | if (phydev->autoneg != AUTONEG_ENABLE) | |
2f987d48 | 1161 | goto out; |
2b9672dd | 1162 | |
65b27995 HK |
1163 | linkmode_copy(adv_tmp, phydev->advertising); |
1164 | ||
1165 | ret = phy_speed_down_core(phydev); | |
1166 | if (ret) | |
2f987d48 | 1167 | goto out; |
2b9672dd | 1168 | |
65b27995 HK |
1169 | linkmode_copy(phydev->adv_old, adv_tmp); |
1170 | ||
2f987d48 AL |
1171 | if (linkmode_equal(phydev->advertising, adv_tmp)) { |
1172 | ret = 0; | |
1173 | goto out; | |
1174 | } | |
2b9672dd HK |
1175 | |
1176 | ret = phy_config_aneg(phydev); | |
1177 | if (ret) | |
2f987d48 AL |
1178 | goto out; |
1179 | ||
1180 | ret = sync ? phy_poll_aneg_done(phydev) : 0; | |
1181 | out: | |
1182 | mutex_unlock(&phydev->lock); | |
2b9672dd | 1183 | |
2f987d48 | 1184 | return ret; |
2b9672dd HK |
1185 | } |
1186 | EXPORT_SYMBOL_GPL(phy_speed_down); | |
1187 | ||
1188 | /** | |
1189 | * phy_speed_up - (re)set advertised speeds to all supported speeds | |
1190 | * @phydev: the phy_device struct | |
1191 | * | |
1192 | * Description: Used to revert the effect of phy_speed_down | |
1193 | */ | |
1194 | int phy_speed_up(struct phy_device *phydev) | |
1195 | { | |
65b27995 | 1196 | __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp); |
2f987d48 AL |
1197 | int ret = 0; |
1198 | ||
1199 | mutex_lock(&phydev->lock); | |
2b9672dd HK |
1200 | |
1201 | if (phydev->autoneg != AUTONEG_ENABLE) | |
2f987d48 | 1202 | goto out; |
2b9672dd | 1203 | |
65b27995 | 1204 | if (linkmode_empty(phydev->adv_old)) |
2f987d48 | 1205 | goto out; |
2b9672dd | 1206 | |
65b27995 HK |
1207 | linkmode_copy(adv_tmp, phydev->advertising); |
1208 | linkmode_copy(phydev->advertising, phydev->adv_old); | |
1209 | linkmode_zero(phydev->adv_old); | |
3c1bcc86 | 1210 | |
65b27995 | 1211 | if (linkmode_equal(phydev->advertising, adv_tmp)) |
2f987d48 AL |
1212 | goto out; |
1213 | ||
1214 | ret = phy_config_aneg(phydev); | |
1215 | out: | |
1216 | mutex_unlock(&phydev->lock); | |
2b9672dd | 1217 | |
2f987d48 | 1218 | return ret; |
2b9672dd HK |
1219 | } |
1220 | EXPORT_SYMBOL_GPL(phy_speed_up); | |
1221 | ||
b3df0da8 RD |
1222 | /** |
1223 | * phy_start_machine - start PHY state machine tracking | |
1224 | * @phydev: the phy_device struct | |
00db8189 | 1225 | * |
b3df0da8 | 1226 | * Description: The PHY infrastructure can run a state machine |
00db8189 | 1227 | * which tracks whether the PHY is starting up, negotiating, |
fb5e7606 FF |
1228 | * etc. This function starts the delayed workqueue which tracks |
1229 | * the state of the PHY. If you want to maintain your own state machine, | |
29935aeb | 1230 | * do not call this function. |
b3df0da8 | 1231 | */ |
29935aeb | 1232 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 1233 | { |
6384e483 | 1234 | phy_trigger_machine(phydev); |
00db8189 | 1235 | } |
5e5758d9 | 1236 | EXPORT_SYMBOL_GPL(phy_start_machine); |
00db8189 | 1237 | |
b3df0da8 RD |
1238 | /** |
1239 | * phy_stop_machine - stop the PHY state machine tracking | |
1240 | * @phydev: target phy_device struct | |
00db8189 | 1241 | * |
fb5e7606 FF |
1242 | * Description: Stops the state machine delayed workqueue, sets the |
1243 | * state to UP (unless it wasn't up yet). This function must be | |
1244 | * called BEFORE phy_detach. | |
00db8189 AF |
1245 | */ |
1246 | void phy_stop_machine(struct phy_device *phydev) | |
1247 | { | |
a390d1f3 | 1248 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 1249 | |
35b5f6b1 | 1250 | mutex_lock(&phydev->lock); |
a2fc9d7e | 1251 | if (phy_is_started(phydev)) |
00db8189 | 1252 | phydev->state = PHY_UP; |
35b5f6b1 | 1253 | mutex_unlock(&phydev->lock); |
00db8189 AF |
1254 | } |
1255 | ||
323fe43c FF |
1256 | static void phy_process_error(struct phy_device *phydev) |
1257 | { | |
a0e026e7 SS |
1258 | /* phydev->lock must be held for the state change to be safe */ |
1259 | if (!mutex_is_locked(&phydev->lock)) | |
1260 | phydev_err(phydev, "PHY-device data unsafe context\n"); | |
1261 | ||
59088b5a | 1262 | phydev->state = PHY_ERROR; |
323fe43c FF |
1263 | |
1264 | phy_trigger_machine(phydev); | |
1265 | } | |
1266 | ||
1267 | static void phy_error_precise(struct phy_device *phydev, | |
1268 | const void *func, int err) | |
1269 | { | |
1270 | WARN(1, "%pS: returned: %d\n", func, err); | |
1271 | phy_process_error(phydev); | |
1272 | } | |
1273 | ||
b3df0da8 | 1274 | /** |
59088b5a | 1275 | * phy_error - enter ERROR state for this PHY device |
b3df0da8 | 1276 | * @phydev: target phy_device struct |
00db8189 | 1277 | * |
59088b5a | 1278 | * Moves the PHY to the ERROR state in response to a read |
00db8189 | 1279 | * or write error, and tells the controller the link is down. |
a0e026e7 | 1280 | * Must be called with phydev->lock held. |
00db8189 | 1281 | */ |
293e9a3d | 1282 | void phy_error(struct phy_device *phydev) |
00db8189 | 1283 | { |
fa7b28c1 | 1284 | WARN_ON(1); |
323fe43c | 1285 | phy_process_error(phydev); |
00db8189 | 1286 | } |
293e9a3d | 1287 | EXPORT_SYMBOL(phy_error); |
00db8189 | 1288 | |
a2c054a8 BM |
1289 | /** |
1290 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
1291 | * @phydev: target phy_device struct | |
1292 | */ | |
3dd4ef1b | 1293 | int phy_disable_interrupts(struct phy_device *phydev) |
a2c054a8 | 1294 | { |
a2c054a8 | 1295 | /* Disable PHY interrupts */ |
6527b938 | 1296 | return phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); |
a2c054a8 BM |
1297 | } |
1298 | ||
1299 | /** | |
34d884e3 HK |
1300 | * phy_interrupt - PHY interrupt handler |
1301 | * @irq: interrupt line | |
1302 | * @phy_dat: phy_device pointer | |
1303 | * | |
1304 | * Description: Handle PHY interrupt | |
a2c054a8 | 1305 | */ |
34d884e3 | 1306 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
a2c054a8 | 1307 | { |
34d884e3 | 1308 | struct phy_device *phydev = phy_dat; |
91a7cda1 | 1309 | irqreturn_t ret; |
a2c054a8 | 1310 | |
1758bde2 LW |
1311 | /* Wakeup interrupts may occur during a system sleep transition. |
1312 | * Postpone handling until the PHY has resumed. | |
1313 | */ | |
1314 | if (IS_ENABLED(CONFIG_PM_SLEEP) && phydev->irq_suspended) { | |
1315 | struct net_device *netdev = phydev->attached_dev; | |
1316 | ||
1317 | if (netdev) { | |
1318 | struct device *parent = netdev->dev.parent; | |
1319 | ||
3ebbd9f6 | 1320 | if (netdev->ethtool->wol_enabled) |
1758bde2 LW |
1321 | pm_system_wakeup(); |
1322 | else if (device_may_wakeup(&netdev->dev)) | |
1323 | pm_wakeup_dev_event(&netdev->dev, 0, true); | |
1324 | else if (parent && device_may_wakeup(parent)) | |
1325 | pm_wakeup_dev_event(parent, 0, true); | |
1326 | } | |
1327 | ||
1328 | phydev->irq_rerun = 1; | |
1329 | disable_irq_nosync(irq); | |
1330 | return IRQ_HANDLED; | |
1331 | } | |
1332 | ||
91a7cda1 | 1333 | mutex_lock(&phydev->lock); |
0bd199fd | 1334 | ret = phydev->drv->handle_interrupt(phydev); |
91a7cda1 FD |
1335 | mutex_unlock(&phydev->lock); |
1336 | ||
1337 | return ret; | |
a2c054a8 BM |
1338 | } |
1339 | ||
b3df0da8 RD |
1340 | /** |
1341 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
1342 | * @phydev: target phy_device struct | |
1343 | */ | |
89ff05ec | 1344 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 1345 | { |
553fe92b | 1346 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 1347 | } |
00db8189 | 1348 | |
b3df0da8 | 1349 | /** |
07b09289 | 1350 | * phy_request_interrupt - request and enable interrupt for a PHY device |
b3df0da8 | 1351 | * @phydev: target phy_device struct |
e1393456 | 1352 | * |
07b09289 | 1353 | * Description: Request and enable the interrupt for the given PHY. |
b3df0da8 | 1354 | * If this fails, then we set irq to PHY_POLL. |
e1393456 AF |
1355 | * This should only be called with a valid IRQ number. |
1356 | */ | |
434a4315 | 1357 | void phy_request_interrupt(struct phy_device *phydev) |
e1393456 | 1358 | { |
434a4315 HK |
1359 | int err; |
1360 | ||
1361 | err = request_threaded_irq(phydev->irq, NULL, phy_interrupt, | |
1362 | IRQF_ONESHOT | IRQF_SHARED, | |
1363 | phydev_name(phydev), phydev); | |
1364 | if (err) { | |
1365 | phydev_warn(phydev, "Error %d requesting IRQ %d, falling back to polling\n", | |
1366 | err, phydev->irq); | |
e1393456 | 1367 | phydev->irq = PHY_POLL; |
07b09289 HK |
1368 | } else { |
1369 | if (phy_enable_interrupts(phydev)) { | |
1370 | phydev_warn(phydev, "Can't enable interrupt, falling back to polling\n"); | |
1371 | phy_free_interrupt(phydev); | |
1372 | phydev->irq = PHY_POLL; | |
1373 | } | |
e1393456 | 1374 | } |
e1393456 | 1375 | } |
434a4315 | 1376 | EXPORT_SYMBOL(phy_request_interrupt); |
e1393456 | 1377 | |
07b09289 HK |
1378 | /** |
1379 | * phy_free_interrupt - disable and free interrupt for a PHY device | |
1380 | * @phydev: target phy_device struct | |
1381 | * | |
1382 | * Description: Disable and free the interrupt for the given PHY. | |
1383 | * This should only be called with a valid IRQ number. | |
1384 | */ | |
1385 | void phy_free_interrupt(struct phy_device *phydev) | |
1386 | { | |
1387 | phy_disable_interrupts(phydev); | |
1388 | free_irq(phydev->irq, phydev); | |
1389 | } | |
1390 | EXPORT_SYMBOL(phy_free_interrupt); | |
1391 | ||
8635c066 RKO |
1392 | enum phy_state_work { |
1393 | PHY_STATE_WORK_NONE, | |
1394 | PHY_STATE_WORK_ANEG, | |
1395 | PHY_STATE_WORK_SUSPEND, | |
1396 | }; | |
1397 | ||
1398 | static enum phy_state_work _phy_state_machine(struct phy_device *phydev) | |
00db8189 | 1399 | { |
8635c066 | 1400 | enum phy_state_work state_work = PHY_STATE_WORK_NONE; |
4a459bdc | 1401 | struct net_device *dev = phydev->attached_dev; |
8635c066 | 1402 | enum phy_state old_state = phydev->state; |
323fe43c | 1403 | const void *func = NULL; |
a68a8138 | 1404 | bool finished = false; |
00db8189 AF |
1405 | int err = 0; |
1406 | ||
e109374f FF |
1407 | switch (phydev->state) { |
1408 | case PHY_DOWN: | |
e109374f | 1409 | case PHY_READY: |
e109374f FF |
1410 | break; |
1411 | case PHY_UP: | |
8635c066 | 1412 | state_work = PHY_STATE_WORK_ANEG; |
e109374f FF |
1413 | break; |
1414 | case PHY_NOLINK: | |
c8e977ba | 1415 | case PHY_RUNNING: |
c8e977ba | 1416 | err = phy_check_link_status(phydev); |
323fe43c | 1417 | func = &phy_check_link_status; |
e109374f | 1418 | break; |
a68a8138 AL |
1419 | case PHY_CABLETEST: |
1420 | err = phydev->drv->cable_test_get_status(phydev, &finished); | |
1421 | if (err) { | |
1422 | phy_abort_cable_test(phydev); | |
4a459bdc | 1423 | netif_testing_off(dev); |
8635c066 | 1424 | state_work = PHY_STATE_WORK_ANEG; |
a68a8138 AL |
1425 | phydev->state = PHY_UP; |
1426 | break; | |
1427 | } | |
1428 | ||
1429 | if (finished) { | |
1dd3f212 | 1430 | ethnl_cable_test_finished(phydev); |
4a459bdc | 1431 | netif_testing_off(dev); |
8635c066 | 1432 | state_work = PHY_STATE_WORK_ANEG; |
a68a8138 AL |
1433 | phydev->state = PHY_UP; |
1434 | } | |
1435 | break; | |
e109374f | 1436 | case PHY_HALTED: |
59088b5a | 1437 | case PHY_ERROR: |
e109374f FF |
1438 | if (phydev->link) { |
1439 | phydev->link = 0; | |
a307593a | 1440 | phy_link_down(phydev); |
e109374f | 1441 | } |
8635c066 | 1442 | state_work = PHY_STATE_WORK_SUSPEND; |
e109374f | 1443 | break; |
00db8189 AF |
1444 | } |
1445 | ||
8635c066 | 1446 | if (state_work == PHY_STATE_WORK_ANEG) { |
ea5968cd RKO |
1447 | err = _phy_start_aneg(phydev); |
1448 | func = &_phy_start_aneg; | |
1449 | } | |
1450 | ||
8635c066 RKO |
1451 | if (err == -ENODEV) |
1452 | return state_work; | |
06edf1a9 | 1453 | |
00db8189 | 1454 | if (err < 0) |
323fe43c | 1455 | phy_error_precise(phydev, func, err); |
00db8189 | 1456 | |
4203d840 | 1457 | phy_process_state_change(phydev, old_state); |
3e2186e0 | 1458 | |
d5c3d846 | 1459 | /* Only re-schedule a PHY state machine change if we are polling the |
93e8990c | 1460 | * PHY, if PHY_MAC_INTERRUPT is set, then we will be moving |
075ddebc HK |
1461 | * between states from phy_mac_interrupt(). |
1462 | * | |
1463 | * In state PHY_HALTED the PHY gets suspended, so rescheduling the | |
1464 | * state machine would be pointless and possibly error prone when | |
1465 | * called from phy_disconnect() synchronously. | |
d5c3d846 | 1466 | */ |
2b3e88ea | 1467 | if (phy_polling_mode(phydev) && phy_is_started(phydev)) |
9f2959b6 | 1468 | phy_queue_state_machine(phydev, PHY_STATE_TIME); |
6e19b350 | 1469 | |
8635c066 RKO |
1470 | return state_work; |
1471 | } | |
1472 | ||
1473 | /* unlocked part of the PHY state machine */ | |
1474 | static void _phy_state_machine_post_work(struct phy_device *phydev, | |
1475 | enum phy_state_work state_work) | |
1476 | { | |
1477 | if (state_work == PHY_STATE_WORK_SUSPEND) | |
6e19b350 | 1478 | phy_suspend(phydev); |
35b5f6b1 | 1479 | } |
a59a4d19 | 1480 | |
8635c066 RKO |
1481 | /** |
1482 | * phy_state_machine - Handle the state machine | |
1483 | * @work: work_struct that describes the work to be done | |
1484 | */ | |
1485 | void phy_state_machine(struct work_struct *work) | |
1486 | { | |
1487 | struct delayed_work *dwork = to_delayed_work(work); | |
1488 | struct phy_device *phydev = | |
1489 | container_of(dwork, struct phy_device, state_queue); | |
1490 | enum phy_state_work state_work; | |
1491 | ||
1492 | mutex_lock(&phydev->lock); | |
1493 | state_work = _phy_state_machine(phydev); | |
1494 | mutex_unlock(&phydev->lock); | |
1495 | ||
1496 | _phy_state_machine_post_work(phydev, state_work); | |
1497 | } | |
1498 | ||
c398ef41 RKO |
1499 | /** |
1500 | * phy_stop - Bring down the PHY link, and stop checking the status | |
1501 | * @phydev: target phy_device struct | |
1502 | */ | |
1503 | void phy_stop(struct phy_device *phydev) | |
1504 | { | |
1505 | struct net_device *dev = phydev->attached_dev; | |
adcbb855 | 1506 | enum phy_state_work state_work; |
c398ef41 RKO |
1507 | enum phy_state old_state; |
1508 | ||
1509 | if (!phy_is_started(phydev) && phydev->state != PHY_DOWN && | |
1510 | phydev->state != PHY_ERROR) { | |
1511 | WARN(1, "called from state %s\n", | |
1512 | phy_state_to_str(phydev->state)); | |
1513 | return; | |
1514 | } | |
1515 | ||
1516 | mutex_lock(&phydev->lock); | |
1517 | old_state = phydev->state; | |
1518 | ||
1519 | if (phydev->state == PHY_CABLETEST) { | |
1520 | phy_abort_cable_test(phydev); | |
1521 | netif_testing_off(dev); | |
1522 | } | |
1523 | ||
1524 | if (phydev->sfp_bus) | |
1525 | sfp_upstream_stop(phydev->sfp_bus); | |
1526 | ||
1527 | phydev->state = PHY_HALTED; | |
1528 | phy_process_state_change(phydev, old_state); | |
1529 | ||
adcbb855 | 1530 | state_work = _phy_state_machine(phydev); |
c398ef41 RKO |
1531 | mutex_unlock(&phydev->lock); |
1532 | ||
adcbb855 | 1533 | _phy_state_machine_post_work(phydev, state_work); |
c398ef41 RKO |
1534 | phy_stop_machine(phydev); |
1535 | ||
1536 | /* Cannot call flush_scheduled_work() here as desired because | |
1537 | * of rtnl_lock(), but PHY_HALTED shall guarantee irq handler | |
1538 | * will not reenable interrupts. | |
1539 | */ | |
1540 | } | |
1541 | EXPORT_SYMBOL(phy_stop); | |
1542 | ||
1543 | /** | |
1544 | * phy_start - start or restart a PHY device | |
1545 | * @phydev: target phy_device struct | |
1546 | * | |
1547 | * Description: Indicates the attached device's readiness to | |
1548 | * handle PHY-related work. Used during startup to start the | |
1549 | * PHY, and after a call to phy_stop() to resume operation. | |
1550 | * Also used to indicate the MDIO bus has cleared an error | |
1551 | * condition. | |
1552 | */ | |
1553 | void phy_start(struct phy_device *phydev) | |
1554 | { | |
1555 | mutex_lock(&phydev->lock); | |
1556 | ||
1557 | if (phydev->state != PHY_READY && phydev->state != PHY_HALTED) { | |
1558 | WARN(1, "called from state %s\n", | |
1559 | phy_state_to_str(phydev->state)); | |
1560 | goto out; | |
1561 | } | |
1562 | ||
1563 | if (phydev->sfp_bus) | |
1564 | sfp_upstream_start(phydev->sfp_bus); | |
1565 | ||
1566 | /* if phy was suspended, bring the physical link up again */ | |
1567 | __phy_resume(phydev); | |
1568 | ||
1569 | phydev->state = PHY_UP; | |
1570 | ||
1571 | phy_start_machine(phydev); | |
1572 | out: | |
1573 | mutex_unlock(&phydev->lock); | |
1574 | } | |
1575 | EXPORT_SYMBOL(phy_start); | |
1576 | ||
664fcf12 AL |
1577 | /** |
1578 | * phy_mac_interrupt - MAC says the link has changed | |
1579 | * @phydev: phy_device struct with changed link | |
664fcf12 | 1580 | * |
28b2e0d2 HK |
1581 | * The MAC layer is able to indicate there has been a change in the PHY link |
1582 | * status. Trigger the state machine and work a work queue. | |
664fcf12 | 1583 | */ |
28b2e0d2 | 1584 | void phy_mac_interrupt(struct phy_device *phydev) |
5ea94e76 | 1585 | { |
deccd16f | 1586 | /* Trigger a state machine change */ |
d73a2156 | 1587 | phy_trigger_machine(phydev); |
5ea94e76 FF |
1588 | } |
1589 | EXPORT_SYMBOL(phy_mac_interrupt); | |
1590 | ||
a59a4d19 GC |
1591 | /** |
1592 | * phy_init_eee - init and check the EEE feature | |
1593 | * @phydev: target phy_device struct | |
1594 | * @clk_stop_enable: PHY may stop the clock during LPI | |
1595 | * | |
1596 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
1597 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
1598 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
1599 | * bit if required. | |
1600 | */ | |
1601 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
1602 | { | |
6340f9fd OR |
1603 | int ret; |
1604 | ||
25149ef9 FF |
1605 | if (!phydev->drv) |
1606 | return -EIO; | |
1607 | ||
6340f9fd OR |
1608 | ret = genphy_c45_eee_is_active(phydev, NULL, NULL, NULL); |
1609 | if (ret < 0) | |
1610 | return ret; | |
1611 | if (!ret) | |
1612 | return -EPROTONOSUPPORT; | |
a59a4d19 | 1613 | |
6340f9fd OR |
1614 | if (clk_stop_enable) |
1615 | /* Configure the PHY to stop receiving xMII | |
1616 | * clock while it is signaling LPI. | |
1617 | */ | |
1618 | ret = phy_set_bits_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, | |
1619 | MDIO_PCS_CTRL1_CLKSTOP_EN); | |
a59a4d19 | 1620 | |
6340f9fd | 1621 | return ret < 0 ? ret : 0; |
a59a4d19 GC |
1622 | } |
1623 | EXPORT_SYMBOL(phy_init_eee); | |
1624 | ||
1625 | /** | |
1626 | * phy_get_eee_err - report the EEE wake error count | |
1627 | * @phydev: target phy_device struct | |
1628 | * | |
1629 | * Description: it is to report the number of time where the PHY | |
1630 | * failed to complete its normal wake sequence. | |
1631 | */ | |
1632 | int phy_get_eee_err(struct phy_device *phydev) | |
1633 | { | |
2f987d48 AL |
1634 | int ret; |
1635 | ||
25149ef9 FF |
1636 | if (!phydev->drv) |
1637 | return -EIO; | |
1638 | ||
2f987d48 AL |
1639 | mutex_lock(&phydev->lock); |
1640 | ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR); | |
1641 | mutex_unlock(&phydev->lock); | |
1642 | ||
1643 | return ret; | |
a59a4d19 GC |
1644 | } |
1645 | EXPORT_SYMBOL(phy_get_eee_err); | |
1646 | ||
1647 | /** | |
1648 | * phy_ethtool_get_eee - get EEE supported and status | |
1649 | * @phydev: target phy_device struct | |
d80a5233 | 1650 | * @data: ethtool_keee data |
a59a4d19 | 1651 | * |
fe0d4fd9 AL |
1652 | * Description: reports the Supported/Advertisement/LP Advertisement |
1653 | * capabilities, etc. | |
a59a4d19 | 1654 | */ |
d80a5233 | 1655 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_keee *data) |
a59a4d19 | 1656 | { |
2f987d48 AL |
1657 | int ret; |
1658 | ||
25149ef9 FF |
1659 | if (!phydev->drv) |
1660 | return -EIO; | |
1661 | ||
2f987d48 AL |
1662 | mutex_lock(&phydev->lock); |
1663 | ret = genphy_c45_ethtool_get_eee(phydev, data); | |
fe0d4fd9 | 1664 | eeecfg_to_eee(data, &phydev->eee_cfg); |
2f987d48 AL |
1665 | mutex_unlock(&phydev->lock); |
1666 | ||
1667 | return ret; | |
a59a4d19 GC |
1668 | } |
1669 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1670 | ||
3e43b903 AL |
1671 | /** |
1672 | * phy_ethtool_set_eee_noneg - Adjusts MAC LPI configuration without PHY | |
1673 | * renegotiation | |
1674 | * @phydev: pointer to the target PHY device structure | |
1675 | * @data: pointer to the ethtool_keee structure containing the new EEE settings | |
1676 | * | |
1677 | * This function updates the Energy Efficient Ethernet (EEE) configuration | |
1678 | * for cases where only the MAC's Low Power Idle (LPI) configuration changes, | |
1679 | * without triggering PHY renegotiation. It ensures that the MAC is properly | |
1680 | * informed of the new LPI settings by cycling the link down and up, which | |
1681 | * is necessary for the MAC to adopt the new configuration. This adjustment | |
1682 | * is done only if there is a change in the tx_lpi_enabled or tx_lpi_timer | |
1683 | * configuration. | |
1684 | */ | |
1685 | static void phy_ethtool_set_eee_noneg(struct phy_device *phydev, | |
1686 | struct ethtool_keee *data) | |
1687 | { | |
1688 | if (phydev->eee_cfg.tx_lpi_enabled != data->tx_lpi_enabled || | |
1689 | phydev->eee_cfg.tx_lpi_timer != data->tx_lpi_timer) { | |
1690 | eee_to_eeecfg(&phydev->eee_cfg, data); | |
1691 | phydev->enable_tx_lpi = eeecfg_mac_can_tx_lpi(&phydev->eee_cfg); | |
1692 | if (phydev->link) { | |
1693 | phydev->link = false; | |
1694 | phy_link_down(phydev); | |
1695 | phydev->link = true; | |
1696 | phy_link_up(phydev); | |
1697 | } | |
1698 | } | |
1699 | } | |
1700 | ||
a59a4d19 GC |
1701 | /** |
1702 | * phy_ethtool_set_eee - set EEE supported and status | |
1703 | * @phydev: target phy_device struct | |
d80a5233 | 1704 | * @data: ethtool_keee data |
a59a4d19 GC |
1705 | * |
1706 | * Description: it is to program the Advertisement EEE register. | |
1707 | */ | |
d80a5233 | 1708 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_keee *data) |
a59a4d19 | 1709 | { |
2f987d48 AL |
1710 | int ret; |
1711 | ||
25149ef9 FF |
1712 | if (!phydev->drv) |
1713 | return -EIO; | |
1714 | ||
2f987d48 AL |
1715 | mutex_lock(&phydev->lock); |
1716 | ret = genphy_c45_ethtool_set_eee(phydev, data); | |
3e43b903 AL |
1717 | if (ret >= 0) { |
1718 | if (ret == 0) | |
1719 | phy_ethtool_set_eee_noneg(phydev, data); | |
fe0d4fd9 | 1720 | eee_to_eeecfg(&phydev->eee_cfg, data); |
3e43b903 | 1721 | } |
2f987d48 AL |
1722 | mutex_unlock(&phydev->lock); |
1723 | ||
3e43b903 | 1724 | return ret < 0 ? ret : 0; |
a59a4d19 GC |
1725 | } |
1726 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb | 1727 | |
4069a572 AL |
1728 | /** |
1729 | * phy_ethtool_set_wol - Configure Wake On LAN | |
1730 | * | |
1731 | * @phydev: target phy_device struct | |
1732 | * @wol: Configuration requested | |
1733 | */ | |
42e836eb MS |
1734 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) |
1735 | { | |
2f987d48 AL |
1736 | int ret; |
1737 | ||
1738 | if (phydev->drv && phydev->drv->set_wol) { | |
1739 | mutex_lock(&phydev->lock); | |
1740 | ret = phydev->drv->set_wol(phydev, wol); | |
1741 | mutex_unlock(&phydev->lock); | |
1742 | ||
1743 | return ret; | |
1744 | } | |
42e836eb MS |
1745 | |
1746 | return -EOPNOTSUPP; | |
1747 | } | |
1748 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1749 | ||
4069a572 AL |
1750 | /** |
1751 | * phy_ethtool_get_wol - Get the current Wake On LAN configuration | |
1752 | * | |
1753 | * @phydev: target phy_device struct | |
1754 | * @wol: Store the current configuration here | |
1755 | */ | |
42e836eb MS |
1756 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) |
1757 | { | |
2f987d48 AL |
1758 | if (phydev->drv && phydev->drv->get_wol) { |
1759 | mutex_lock(&phydev->lock); | |
42e836eb | 1760 | phydev->drv->get_wol(phydev, wol); |
2f987d48 AL |
1761 | mutex_unlock(&phydev->lock); |
1762 | } | |
42e836eb MS |
1763 | } |
1764 | EXPORT_SYMBOL(phy_ethtool_get_wol); | |
9d9a77ce PR |
1765 | |
1766 | int phy_ethtool_get_link_ksettings(struct net_device *ndev, | |
1767 | struct ethtool_link_ksettings *cmd) | |
1768 | { | |
1769 | struct phy_device *phydev = ndev->phydev; | |
1770 | ||
1771 | if (!phydev) | |
1772 | return -ENODEV; | |
1773 | ||
5514174f | 1774 | phy_ethtool_ksettings_get(phydev, cmd); |
1775 | ||
1776 | return 0; | |
9d9a77ce PR |
1777 | } |
1778 | EXPORT_SYMBOL(phy_ethtool_get_link_ksettings); | |
1779 | ||
1780 | int phy_ethtool_set_link_ksettings(struct net_device *ndev, | |
1781 | const struct ethtool_link_ksettings *cmd) | |
1782 | { | |
1783 | struct phy_device *phydev = ndev->phydev; | |
1784 | ||
1785 | if (!phydev) | |
1786 | return -ENODEV; | |
1787 | ||
1788 | return phy_ethtool_ksettings_set(phydev, cmd); | |
1789 | } | |
1790 | EXPORT_SYMBOL(phy_ethtool_set_link_ksettings); | |
e86a8987 | 1791 | |
4069a572 AL |
1792 | /** |
1793 | * phy_ethtool_nway_reset - Restart auto negotiation | |
1794 | * @ndev: Network device to restart autoneg for | |
1795 | */ | |
e86a8987 FF |
1796 | int phy_ethtool_nway_reset(struct net_device *ndev) |
1797 | { | |
1798 | struct phy_device *phydev = ndev->phydev; | |
2f987d48 | 1799 | int ret; |
e86a8987 FF |
1800 | |
1801 | if (!phydev) | |
1802 | return -ENODEV; | |
1803 | ||
25149ef9 FF |
1804 | if (!phydev->drv) |
1805 | return -EIO; | |
1806 | ||
2f987d48 AL |
1807 | mutex_lock(&phydev->lock); |
1808 | ret = phy_restart_aneg(phydev); | |
1809 | mutex_unlock(&phydev->lock); | |
1810 | ||
1811 | return ret; | |
e86a8987 FF |
1812 | } |
1813 | EXPORT_SYMBOL(phy_ethtool_nway_reset); |