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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); |
00db8189 | 328 | u16 val = mii_data->val_in; |
79ce0477 | 329 | bool change_autoneg = false; |
cdea04c2 | 330 | int prtad, devad; |
00db8189 AF |
331 | |
332 | switch (cmd) { | |
333 | case SIOCGMIIPHY: | |
e5a03bfd | 334 | mii_data->phy_id = phydev->mdio.addr; |
df561f66 | 335 | fallthrough; |
c6d6a511 | 336 | |
00db8189 | 337 | case SIOCGMIIREG: |
cdea04c2 RK |
338 | if (mdio_phy_id_is_c45(mii_data->phy_id)) { |
339 | prtad = mdio_phy_id_prtad(mii_data->phy_id); | |
340 | devad = mdio_phy_id_devad(mii_data->phy_id); | |
260bdfea AL |
341 | mii_data->val_out = mdiobus_c45_read( |
342 | phydev->mdio.bus, prtad, devad, | |
343 | mii_data->reg_num); | |
cdea04c2 | 344 | } else { |
260bdfea AL |
345 | mii_data->val_out = mdiobus_read( |
346 | phydev->mdio.bus, mii_data->phy_id, | |
347 | mii_data->reg_num); | |
cdea04c2 | 348 | } |
e62a768f | 349 | return 0; |
00db8189 AF |
350 | |
351 | case SIOCSMIIREG: | |
cdea04c2 RK |
352 | if (mdio_phy_id_is_c45(mii_data->phy_id)) { |
353 | prtad = mdio_phy_id_prtad(mii_data->phy_id); | |
354 | devad = mdio_phy_id_devad(mii_data->phy_id); | |
cdea04c2 RK |
355 | } else { |
356 | prtad = mii_data->phy_id; | |
357 | devad = mii_data->reg_num; | |
358 | } | |
359 | if (prtad == phydev->mdio.addr) { | |
360 | switch (devad) { | |
00db8189 | 361 | case MII_BMCR: |
79ce0477 BH |
362 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { |
363 | if (phydev->autoneg == AUTONEG_ENABLE) | |
364 | change_autoneg = true; | |
00db8189 | 365 | phydev->autoneg = AUTONEG_DISABLE; |
79ce0477 BH |
366 | if (val & BMCR_FULLDPLX) |
367 | phydev->duplex = DUPLEX_FULL; | |
368 | else | |
369 | phydev->duplex = DUPLEX_HALF; | |
370 | if (val & BMCR_SPEED1000) | |
371 | phydev->speed = SPEED_1000; | |
372 | else if (val & BMCR_SPEED100) | |
373 | phydev->speed = SPEED_100; | |
374 | else phydev->speed = SPEED_10; | |
169d7a40 | 375 | } else { |
79ce0477 BH |
376 | if (phydev->autoneg == AUTONEG_DISABLE) |
377 | change_autoneg = true; | |
00db8189 | 378 | phydev->autoneg = AUTONEG_ENABLE; |
79ce0477 | 379 | } |
00db8189 AF |
380 | break; |
381 | case MII_ADVERTISE: | |
9db299c7 AL |
382 | mii_adv_mod_linkmode_adv_t(phydev->advertising, |
383 | val); | |
79ce0477 | 384 | change_autoneg = true; |
00db8189 | 385 | break; |
4cf6c57e RK |
386 | case MII_CTRL1000: |
387 | mii_ctrl1000_mod_linkmode_adv_t(phydev->advertising, | |
388 | val); | |
389 | change_autoneg = true; | |
390 | break; | |
00db8189 AF |
391 | default: |
392 | /* do nothing */ | |
393 | break; | |
394 | } | |
395 | } | |
396 | ||
260bdfea AL |
397 | if (mdio_phy_id_is_c45(mii_data->phy_id)) |
398 | mdiobus_c45_write(phydev->mdio.bus, prtad, devad, | |
399 | mii_data->reg_num, val); | |
400 | else | |
401 | mdiobus_write(phydev->mdio.bus, prtad, devad, val); | |
af1dc13e | 402 | |
cdea04c2 RK |
403 | if (prtad == phydev->mdio.addr && |
404 | devad == MII_BMCR && | |
2613f95f | 405 | val & BMCR_RESET) |
e62a768f | 406 | return phy_init_hw(phydev); |
79ce0477 BH |
407 | |
408 | if (change_autoneg) | |
409 | return phy_start_aneg(phydev); | |
410 | ||
e62a768f | 411 | return 0; |
dda93b48 | 412 | |
c1f19b51 | 413 | case SIOCSHWTSTAMP: |
4715f65f RC |
414 | if (phydev->mii_ts && phydev->mii_ts->hwtstamp) |
415 | return phydev->mii_ts->hwtstamp(phydev->mii_ts, ifr); | |
df561f66 | 416 | fallthrough; |
c1f19b51 | 417 | |
dda93b48 | 418 | default: |
c6d6a511 | 419 | return -EOPNOTSUPP; |
00db8189 | 420 | } |
00db8189 | 421 | } |
680e9fe9 | 422 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 423 | |
2ab1d925 | 424 | /** |
a7605370 | 425 | * phy_do_ioctl - generic ndo_eth_ioctl implementation |
2ab1d925 HK |
426 | * @dev: the net_device struct |
427 | * @ifr: &struct ifreq for socket ioctl's | |
428 | * @cmd: ioctl cmd to execute | |
429 | */ | |
bbbf8430 | 430 | int phy_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
2ab1d925 | 431 | { |
bbbf8430 | 432 | if (!dev->phydev) |
2ab1d925 HK |
433 | return -ENODEV; |
434 | ||
435 | return phy_mii_ioctl(dev->phydev, ifr, cmd); | |
436 | } | |
bbbf8430 HK |
437 | EXPORT_SYMBOL(phy_do_ioctl); |
438 | ||
4069a572 | 439 | /** |
a7605370 | 440 | * phy_do_ioctl_running - generic ndo_eth_ioctl implementation but test first |
4069a572 AL |
441 | * |
442 | * @dev: the net_device struct | |
443 | * @ifr: &struct ifreq for socket ioctl's | |
444 | * @cmd: ioctl cmd to execute | |
445 | * | |
446 | * Same as phy_do_ioctl, but ensures that net_device is running before | |
447 | * handling the ioctl. | |
448 | */ | |
bbbf8430 HK |
449 | int phy_do_ioctl_running(struct net_device *dev, struct ifreq *ifr, int cmd) |
450 | { | |
451 | if (!netif_running(dev)) | |
452 | return -ENODEV; | |
453 | ||
454 | return phy_do_ioctl(dev, ifr, cmd); | |
455 | } | |
3231e5d2 | 456 | EXPORT_SYMBOL(phy_do_ioctl_running); |
2ab1d925 | 457 | |
60495b66 VO |
458 | /** |
459 | * __phy_hwtstamp_get - Get hardware timestamping configuration from PHY | |
460 | * | |
461 | * @phydev: the PHY device structure | |
462 | * @config: structure holding the timestamping configuration | |
463 | * | |
464 | * Query the PHY device for its current hardware timestamping configuration. | |
465 | */ | |
466 | int __phy_hwtstamp_get(struct phy_device *phydev, | |
467 | struct kernel_hwtstamp_config *config) | |
468 | { | |
469 | if (!phydev) | |
470 | return -ENODEV; | |
471 | ||
472 | return phy_mii_ioctl(phydev, config->ifr, SIOCGHWTSTAMP); | |
473 | } | |
474 | ||
475 | /** | |
476 | * __phy_hwtstamp_set - Modify PHY hardware timestamping configuration | |
477 | * | |
478 | * @phydev: the PHY device structure | |
479 | * @config: structure holding the timestamping configuration | |
480 | * @extack: netlink extended ack structure, for error reporting | |
481 | */ | |
482 | int __phy_hwtstamp_set(struct phy_device *phydev, | |
483 | struct kernel_hwtstamp_config *config, | |
484 | struct netlink_ext_ack *extack) | |
485 | { | |
486 | if (!phydev) | |
487 | return -ENODEV; | |
488 | ||
489 | return phy_mii_ioctl(phydev, config->ifr, SIOCSHWTSTAMP); | |
490 | } | |
491 | ||
4069a572 AL |
492 | /** |
493 | * phy_queue_state_machine - Trigger the state machine to run soon | |
494 | * | |
495 | * @phydev: the phy_device struct | |
496 | * @jiffies: Run the state machine after these jiffies | |
497 | */ | |
97b33bdf | 498 | void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies) |
a3320bcf HK |
499 | { |
500 | mod_delayed_work(system_power_efficient_wq, &phydev->state_queue, | |
97b33bdf | 501 | jiffies); |
a3320bcf | 502 | } |
97b33bdf | 503 | EXPORT_SYMBOL(phy_queue_state_machine); |
a3320bcf | 504 | |
4069a572 | 505 | /** |
69280228 | 506 | * phy_trigger_machine - Trigger the state machine to run now |
4069a572 AL |
507 | * |
508 | * @phydev: the phy_device struct | |
509 | */ | |
293e9a3d | 510 | void phy_trigger_machine(struct phy_device *phydev) |
a3320bcf HK |
511 | { |
512 | phy_queue_state_machine(phydev, 0); | |
513 | } | |
293e9a3d | 514 | EXPORT_SYMBOL(phy_trigger_machine); |
a3320bcf | 515 | |
a68a8138 AL |
516 | static void phy_abort_cable_test(struct phy_device *phydev) |
517 | { | |
518 | int err; | |
519 | ||
1dd3f212 AL |
520 | ethnl_cable_test_finished(phydev); |
521 | ||
a68a8138 AL |
522 | err = phy_init_hw(phydev); |
523 | if (err) | |
524 | phydev_err(phydev, "Error while aborting cable test"); | |
525 | } | |
526 | ||
4069a572 AL |
527 | /** |
528 | * phy_ethtool_get_strings - Get the statistic counter names | |
529 | * | |
530 | * @phydev: the phy_device struct | |
531 | * @data: Where to put the strings | |
532 | */ | |
17809516 FF |
533 | int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data) |
534 | { | |
535 | if (!phydev->drv) | |
536 | return -EIO; | |
537 | ||
538 | mutex_lock(&phydev->lock); | |
539 | phydev->drv->get_strings(phydev, data); | |
540 | mutex_unlock(&phydev->lock); | |
541 | ||
542 | return 0; | |
543 | } | |
544 | EXPORT_SYMBOL(phy_ethtool_get_strings); | |
545 | ||
4069a572 AL |
546 | /** |
547 | * phy_ethtool_get_sset_count - Get the number of statistic counters | |
548 | * | |
549 | * @phydev: the phy_device struct | |
550 | */ | |
17809516 FF |
551 | int phy_ethtool_get_sset_count(struct phy_device *phydev) |
552 | { | |
553 | int ret; | |
554 | ||
555 | if (!phydev->drv) | |
556 | return -EIO; | |
557 | ||
558 | if (phydev->drv->get_sset_count && | |
559 | phydev->drv->get_strings && | |
560 | phydev->drv->get_stats) { | |
561 | mutex_lock(&phydev->lock); | |
562 | ret = phydev->drv->get_sset_count(phydev); | |
563 | mutex_unlock(&phydev->lock); | |
564 | ||
565 | return ret; | |
566 | } | |
567 | ||
568 | return -EOPNOTSUPP; | |
569 | } | |
570 | EXPORT_SYMBOL(phy_ethtool_get_sset_count); | |
571 | ||
4069a572 AL |
572 | /** |
573 | * phy_ethtool_get_stats - Get the statistic counters | |
574 | * | |
575 | * @phydev: the phy_device struct | |
576 | * @stats: What counters to get | |
577 | * @data: Where to store the counters | |
578 | */ | |
17809516 FF |
579 | int phy_ethtool_get_stats(struct phy_device *phydev, |
580 | struct ethtool_stats *stats, u64 *data) | |
581 | { | |
582 | if (!phydev->drv) | |
583 | return -EIO; | |
584 | ||
585 | mutex_lock(&phydev->lock); | |
586 | phydev->drv->get_stats(phydev, stats, data); | |
587 | mutex_unlock(&phydev->lock); | |
588 | ||
589 | return 0; | |
590 | } | |
591 | EXPORT_SYMBOL(phy_ethtool_get_stats); | |
592 | ||
a23a1e57 PB |
593 | /** |
594 | * phy_ethtool_get_plca_cfg - Get PLCA RS configuration | |
595 | * @phydev: the phy_device struct | |
596 | * @plca_cfg: where to store the retrieved configuration | |
597 | * | |
598 | * Retrieve the PLCA configuration from the PHY. Return 0 on success or a | |
599 | * negative value if an error occurred. | |
600 | */ | |
601 | int phy_ethtool_get_plca_cfg(struct phy_device *phydev, | |
602 | struct phy_plca_cfg *plca_cfg) | |
603 | { | |
604 | int ret; | |
605 | ||
606 | if (!phydev->drv) { | |
607 | ret = -EIO; | |
608 | goto out; | |
609 | } | |
610 | ||
611 | if (!phydev->drv->get_plca_cfg) { | |
612 | ret = -EOPNOTSUPP; | |
613 | goto out; | |
614 | } | |
615 | ||
616 | mutex_lock(&phydev->lock); | |
617 | ret = phydev->drv->get_plca_cfg(phydev, plca_cfg); | |
618 | ||
619 | mutex_unlock(&phydev->lock); | |
620 | out: | |
621 | return ret; | |
622 | } | |
623 | ||
624 | /** | |
625 | * plca_check_valid - Check PLCA configuration before enabling | |
626 | * @phydev: the phy_device struct | |
627 | * @plca_cfg: current PLCA configuration | |
628 | * @extack: extack for reporting useful error messages | |
629 | * | |
630 | * Checks whether the PLCA and PHY configuration are consistent and it is safe | |
631 | * to enable PLCA. Returns 0 on success or a negative value if the PLCA or PHY | |
632 | * configuration is not consistent. | |
633 | */ | |
634 | static int plca_check_valid(struct phy_device *phydev, | |
635 | const struct phy_plca_cfg *plca_cfg, | |
636 | struct netlink_ext_ack *extack) | |
637 | { | |
638 | int ret = 0; | |
639 | ||
640 | if (!linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT1S_P2MP_Half_BIT, | |
641 | phydev->advertising)) { | |
642 | ret = -EOPNOTSUPP; | |
643 | NL_SET_ERR_MSG(extack, | |
644 | "Point to Multi-Point mode is not enabled"); | |
645 | } else if (plca_cfg->node_id >= 255) { | |
646 | NL_SET_ERR_MSG(extack, "PLCA node ID is not set"); | |
647 | ret = -EINVAL; | |
648 | } | |
649 | ||
650 | return ret; | |
651 | } | |
652 | ||
653 | /** | |
654 | * phy_ethtool_set_plca_cfg - Set PLCA RS configuration | |
655 | * @phydev: the phy_device struct | |
656 | * @plca_cfg: new PLCA configuration to apply | |
657 | * @extack: extack for reporting useful error messages | |
658 | * | |
659 | * Sets the PLCA configuration in the PHY. Return 0 on success or a | |
660 | * negative value if an error occurred. | |
661 | */ | |
662 | int phy_ethtool_set_plca_cfg(struct phy_device *phydev, | |
663 | const struct phy_plca_cfg *plca_cfg, | |
664 | struct netlink_ext_ack *extack) | |
665 | { | |
666 | struct phy_plca_cfg *curr_plca_cfg; | |
667 | int ret; | |
668 | ||
669 | if (!phydev->drv) { | |
670 | ret = -EIO; | |
671 | goto out; | |
672 | } | |
673 | ||
674 | if (!phydev->drv->set_plca_cfg || | |
675 | !phydev->drv->get_plca_cfg) { | |
676 | ret = -EOPNOTSUPP; | |
677 | goto out; | |
678 | } | |
679 | ||
680 | curr_plca_cfg = kmalloc(sizeof(*curr_plca_cfg), GFP_KERNEL); | |
681 | if (!curr_plca_cfg) { | |
682 | ret = -ENOMEM; | |
683 | goto out; | |
684 | } | |
685 | ||
686 | mutex_lock(&phydev->lock); | |
687 | ||
688 | ret = phydev->drv->get_plca_cfg(phydev, curr_plca_cfg); | |
689 | if (ret) | |
690 | goto out_drv; | |
691 | ||
692 | if (curr_plca_cfg->enabled < 0 && plca_cfg->enabled >= 0) { | |
693 | NL_SET_ERR_MSG(extack, | |
694 | "PHY does not support changing the PLCA 'enable' attribute"); | |
695 | ret = -EINVAL; | |
696 | goto out_drv; | |
697 | } | |
698 | ||
699 | if (curr_plca_cfg->node_id < 0 && plca_cfg->node_id >= 0) { | |
700 | NL_SET_ERR_MSG(extack, | |
701 | "PHY does not support changing the PLCA 'local node ID' attribute"); | |
702 | ret = -EINVAL; | |
703 | goto out_drv; | |
704 | } | |
705 | ||
706 | if (curr_plca_cfg->node_cnt < 0 && plca_cfg->node_cnt >= 0) { | |
707 | NL_SET_ERR_MSG(extack, | |
708 | "PHY does not support changing the PLCA 'node count' attribute"); | |
709 | ret = -EINVAL; | |
710 | goto out_drv; | |
711 | } | |
712 | ||
713 | if (curr_plca_cfg->to_tmr < 0 && plca_cfg->to_tmr >= 0) { | |
714 | NL_SET_ERR_MSG(extack, | |
715 | "PHY does not support changing the PLCA 'TO timer' attribute"); | |
716 | ret = -EINVAL; | |
717 | goto out_drv; | |
718 | } | |
719 | ||
720 | if (curr_plca_cfg->burst_cnt < 0 && plca_cfg->burst_cnt >= 0) { | |
721 | NL_SET_ERR_MSG(extack, | |
722 | "PHY does not support changing the PLCA 'burst count' attribute"); | |
723 | ret = -EINVAL; | |
724 | goto out_drv; | |
725 | } | |
726 | ||
727 | if (curr_plca_cfg->burst_tmr < 0 && plca_cfg->burst_tmr >= 0) { | |
728 | NL_SET_ERR_MSG(extack, | |
729 | "PHY does not support changing the PLCA 'burst timer' attribute"); | |
730 | ret = -EINVAL; | |
731 | goto out_drv; | |
732 | } | |
733 | ||
734 | // if enabling PLCA, perform a few sanity checks | |
735 | if (plca_cfg->enabled > 0) { | |
736 | // allow setting node_id concurrently with enabled | |
737 | if (plca_cfg->node_id >= 0) | |
738 | curr_plca_cfg->node_id = plca_cfg->node_id; | |
739 | ||
740 | ret = plca_check_valid(phydev, curr_plca_cfg, extack); | |
741 | if (ret) | |
742 | goto out_drv; | |
743 | } | |
744 | ||
745 | ret = phydev->drv->set_plca_cfg(phydev, plca_cfg); | |
746 | ||
747 | out_drv: | |
748 | kfree(curr_plca_cfg); | |
749 | mutex_unlock(&phydev->lock); | |
750 | out: | |
751 | return ret; | |
752 | } | |
753 | ||
754 | /** | |
755 | * phy_ethtool_get_plca_status - Get PLCA RS status information | |
756 | * @phydev: the phy_device struct | |
757 | * @plca_st: where to store the retrieved status information | |
758 | * | |
759 | * Retrieve the PLCA status information from the PHY. Return 0 on success or a | |
760 | * negative value if an error occurred. | |
761 | */ | |
762 | int phy_ethtool_get_plca_status(struct phy_device *phydev, | |
763 | struct phy_plca_status *plca_st) | |
764 | { | |
765 | int ret; | |
766 | ||
767 | if (!phydev->drv) { | |
768 | ret = -EIO; | |
769 | goto out; | |
770 | } | |
771 | ||
772 | if (!phydev->drv->get_plca_status) { | |
773 | ret = -EOPNOTSUPP; | |
774 | goto out; | |
775 | } | |
776 | ||
777 | mutex_lock(&phydev->lock); | |
778 | ret = phydev->drv->get_plca_status(phydev, plca_st); | |
779 | ||
780 | mutex_unlock(&phydev->lock); | |
781 | out: | |
782 | return ret; | |
783 | } | |
784 | ||
4069a572 AL |
785 | /** |
786 | * phy_start_cable_test - Start a cable test | |
787 | * | |
788 | * @phydev: the phy_device struct | |
789 | * @extack: extack for reporting useful error messages | |
790 | */ | |
a68a8138 AL |
791 | int phy_start_cable_test(struct phy_device *phydev, |
792 | struct netlink_ext_ack *extack) | |
793 | { | |
4a459bdc | 794 | struct net_device *dev = phydev->attached_dev; |
1dd3f212 | 795 | int err = -ENOMEM; |
a68a8138 AL |
796 | |
797 | if (!(phydev->drv && | |
798 | phydev->drv->cable_test_start && | |
799 | phydev->drv->cable_test_get_status)) { | |
800 | NL_SET_ERR_MSG(extack, | |
801 | "PHY driver does not support cable testing"); | |
802 | return -EOPNOTSUPP; | |
803 | } | |
804 | ||
805 | mutex_lock(&phydev->lock); | |
806 | if (phydev->state == PHY_CABLETEST) { | |
807 | NL_SET_ERR_MSG(extack, | |
808 | "PHY already performing a test"); | |
809 | err = -EBUSY; | |
810 | goto out; | |
811 | } | |
812 | ||
813 | if (phydev->state < PHY_UP || | |
814 | phydev->state > PHY_CABLETEST) { | |
815 | NL_SET_ERR_MSG(extack, | |
816 | "PHY not configured. Try setting interface up"); | |
817 | err = -EBUSY; | |
818 | goto out; | |
819 | } | |
820 | ||
1a644de2 | 821 | err = ethnl_cable_test_alloc(phydev, ETHTOOL_MSG_CABLE_TEST_NTF); |
1dd3f212 AL |
822 | if (err) |
823 | goto out; | |
824 | ||
a68a8138 | 825 | /* Mark the carrier down until the test is complete */ |
a307593a | 826 | phy_link_down(phydev); |
a68a8138 | 827 | |
4a459bdc | 828 | netif_testing_on(dev); |
a68a8138 AL |
829 | err = phydev->drv->cable_test_start(phydev); |
830 | if (err) { | |
4a459bdc | 831 | netif_testing_off(dev); |
a68a8138 | 832 | phy_link_up(phydev); |
1dd3f212 | 833 | goto out_free; |
a68a8138 AL |
834 | } |
835 | ||
836 | phydev->state = PHY_CABLETEST; | |
837 | ||
97c22438 AL |
838 | if (phy_polling_mode(phydev)) |
839 | phy_trigger_machine(phydev); | |
1dd3f212 AL |
840 | |
841 | mutex_unlock(&phydev->lock); | |
842 | ||
843 | return 0; | |
844 | ||
845 | out_free: | |
846 | ethnl_cable_test_free(phydev); | |
a68a8138 AL |
847 | out: |
848 | mutex_unlock(&phydev->lock); | |
849 | ||
850 | return err; | |
851 | } | |
852 | EXPORT_SYMBOL(phy_start_cable_test); | |
853 | ||
4069a572 AL |
854 | /** |
855 | * phy_start_cable_test_tdr - Start a raw TDR cable test | |
856 | * | |
857 | * @phydev: the phy_device struct | |
858 | * @extack: extack for reporting useful error messages | |
859 | * @config: Configuration of the test to run | |
860 | */ | |
1a644de2 | 861 | int phy_start_cable_test_tdr(struct phy_device *phydev, |
f2bc8ad3 AL |
862 | struct netlink_ext_ack *extack, |
863 | const struct phy_tdr_config *config) | |
1a644de2 AL |
864 | { |
865 | struct net_device *dev = phydev->attached_dev; | |
866 | int err = -ENOMEM; | |
867 | ||
868 | if (!(phydev->drv && | |
869 | phydev->drv->cable_test_tdr_start && | |
870 | phydev->drv->cable_test_get_status)) { | |
871 | NL_SET_ERR_MSG(extack, | |
872 | "PHY driver does not support cable test TDR"); | |
873 | return -EOPNOTSUPP; | |
874 | } | |
875 | ||
876 | mutex_lock(&phydev->lock); | |
877 | if (phydev->state == PHY_CABLETEST) { | |
878 | NL_SET_ERR_MSG(extack, | |
879 | "PHY already performing a test"); | |
880 | err = -EBUSY; | |
881 | goto out; | |
882 | } | |
883 | ||
884 | if (phydev->state < PHY_UP || | |
885 | phydev->state > PHY_CABLETEST) { | |
886 | NL_SET_ERR_MSG(extack, | |
887 | "PHY not configured. Try setting interface up"); | |
888 | err = -EBUSY; | |
889 | goto out; | |
890 | } | |
891 | ||
892 | err = ethnl_cable_test_alloc(phydev, ETHTOOL_MSG_CABLE_TEST_TDR_NTF); | |
893 | if (err) | |
894 | goto out; | |
895 | ||
896 | /* Mark the carrier down until the test is complete */ | |
897 | phy_link_down(phydev); | |
898 | ||
899 | netif_testing_on(dev); | |
f2bc8ad3 | 900 | err = phydev->drv->cable_test_tdr_start(phydev, config); |
1a644de2 AL |
901 | if (err) { |
902 | netif_testing_off(dev); | |
903 | phy_link_up(phydev); | |
904 | goto out_free; | |
905 | } | |
906 | ||
907 | phydev->state = PHY_CABLETEST; | |
908 | ||
909 | if (phy_polling_mode(phydev)) | |
910 | phy_trigger_machine(phydev); | |
911 | ||
912 | mutex_unlock(&phydev->lock); | |
913 | ||
914 | return 0; | |
915 | ||
916 | out_free: | |
917 | ethnl_cable_test_free(phydev); | |
918 | out: | |
919 | mutex_unlock(&phydev->lock); | |
920 | ||
921 | return err; | |
922 | } | |
923 | EXPORT_SYMBOL(phy_start_cable_test_tdr); | |
924 | ||
014068dc | 925 | int phy_config_aneg(struct phy_device *phydev) |
76299580 HK |
926 | { |
927 | if (phydev->drv->config_aneg) | |
928 | return phydev->drv->config_aneg(phydev); | |
34786005 CG |
929 | |
930 | /* Clause 45 PHYs that don't implement Clause 22 registers are not | |
931 | * allowed to call genphy_config_aneg() | |
932 | */ | |
933 | if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0))) | |
94acaeb5 | 934 | return genphy_c45_config_aneg(phydev); |
34786005 CG |
935 | |
936 | return genphy_config_aneg(phydev); | |
76299580 | 937 | } |
014068dc | 938 | EXPORT_SYMBOL(phy_config_aneg); |
76299580 | 939 | |
74a992b3 HK |
940 | /** |
941 | * phy_check_link_status - check link status and set state accordingly | |
942 | * @phydev: the phy_device struct | |
943 | * | |
944 | * Description: Check for link and whether autoneg was triggered / is running | |
945 | * and set state accordingly | |
946 | */ | |
947 | static int phy_check_link_status(struct phy_device *phydev) | |
948 | { | |
949 | int err; | |
950 | ||
e6e918d4 | 951 | lockdep_assert_held(&phydev->lock); |
74a992b3 | 952 | |
fe4a7a41 JA |
953 | /* Keep previous state if loopback is enabled because some PHYs |
954 | * report that Link is Down when loopback is enabled. | |
955 | */ | |
956 | if (phydev->loopback_enabled) | |
957 | return 0; | |
958 | ||
74a992b3 HK |
959 | err = phy_read_status(phydev); |
960 | if (err) | |
961 | return err; | |
962 | ||
963 | if (phydev->link && phydev->state != PHY_RUNNING) { | |
5eee3bb7 | 964 | phy_check_downshift(phydev); |
74a992b3 HK |
965 | phydev->state = PHY_RUNNING; |
966 | phy_link_up(phydev); | |
967 | } else if (!phydev->link && phydev->state != PHY_NOLINK) { | |
968 | phydev->state = PHY_NOLINK; | |
a307593a | 969 | phy_link_down(phydev); |
74a992b3 HK |
970 | } |
971 | ||
972 | return 0; | |
973 | } | |
974 | ||
b3df0da8 | 975 | /** |
707293a5 | 976 | * _phy_start_aneg - start auto-negotiation for this PHY device |
b3df0da8 | 977 | * @phydev: the phy_device struct |
e1393456 | 978 | * |
b3df0da8 RD |
979 | * Description: Sanitizes the settings (if we're not autonegotiating |
980 | * them), and then calls the driver's config_aneg function. | |
981 | * If the PHYCONTROL Layer is operating, we change the state to | |
982 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 | 983 | */ |
707293a5 | 984 | static int _phy_start_aneg(struct phy_device *phydev) |
e1393456 AF |
985 | { |
986 | int err; | |
987 | ||
707293a5 AL |
988 | lockdep_assert_held(&phydev->lock); |
989 | ||
25149ef9 FF |
990 | if (!phydev->drv) |
991 | return -EIO; | |
992 | ||
e1393456 AF |
993 | if (AUTONEG_DISABLE == phydev->autoneg) |
994 | phy_sanitize_settings(phydev); | |
995 | ||
76299580 | 996 | err = phy_config_aneg(phydev); |
e1393456 | 997 | if (err < 0) |
707293a5 | 998 | return err; |
e1393456 | 999 | |
2bd229df HK |
1000 | if (phy_is_started(phydev)) |
1001 | err = phy_check_link_status(phydev); | |
707293a5 AL |
1002 | |
1003 | return err; | |
1004 | } | |
1005 | ||
1006 | /** | |
1007 | * phy_start_aneg - start auto-negotiation for this PHY device | |
1008 | * @phydev: the phy_device struct | |
1009 | * | |
1010 | * Description: Sanitizes the settings (if we're not autonegotiating | |
1011 | * them), and then calls the driver's config_aneg function. | |
1012 | * If the PHYCONTROL Layer is operating, we change the state to | |
1013 | * reflect the beginning of Auto-negotiation or forcing. | |
1014 | */ | |
1015 | int phy_start_aneg(struct phy_device *phydev) | |
1016 | { | |
1017 | int err; | |
1018 | ||
1019 | mutex_lock(&phydev->lock); | |
1020 | err = _phy_start_aneg(phydev); | |
35b5f6b1 | 1021 | mutex_unlock(&phydev->lock); |
f555f34f | 1022 | |
e1393456 AF |
1023 | return err; |
1024 | } | |
1025 | EXPORT_SYMBOL(phy_start_aneg); | |
1026 | ||
2b9672dd HK |
1027 | static int phy_poll_aneg_done(struct phy_device *phydev) |
1028 | { | |
1029 | unsigned int retries = 100; | |
1030 | int ret; | |
1031 | ||
1032 | do { | |
1033 | msleep(100); | |
1034 | ret = phy_aneg_done(phydev); | |
1035 | } while (!ret && --retries); | |
1036 | ||
1037 | if (!ret) | |
1038 | return -ETIMEDOUT; | |
1039 | ||
1040 | return ret < 0 ? ret : 0; | |
1041 | } | |
1042 | ||
64cd92d5 AL |
1043 | int phy_ethtool_ksettings_set(struct phy_device *phydev, |
1044 | const struct ethtool_link_ksettings *cmd) | |
1045 | { | |
1046 | __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); | |
1047 | u8 autoneg = cmd->base.autoneg; | |
1048 | u8 duplex = cmd->base.duplex; | |
1049 | u32 speed = cmd->base.speed; | |
1050 | ||
1051 | if (cmd->base.phy_address != phydev->mdio.addr) | |
1052 | return -EINVAL; | |
1053 | ||
1054 | linkmode_copy(advertising, cmd->link_modes.advertising); | |
1055 | ||
1056 | /* We make sure that we don't pass unsupported values in to the PHY */ | |
1057 | linkmode_and(advertising, advertising, phydev->supported); | |
1058 | ||
1059 | /* Verify the settings we care about. */ | |
1060 | if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) | |
1061 | return -EINVAL; | |
1062 | ||
1063 | if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) | |
1064 | return -EINVAL; | |
1065 | ||
1066 | if (autoneg == AUTONEG_DISABLE && | |
1067 | ((speed != SPEED_1000 && | |
1068 | speed != SPEED_100 && | |
1069 | speed != SPEED_10) || | |
1070 | (duplex != DUPLEX_HALF && | |
1071 | duplex != DUPLEX_FULL))) | |
1072 | return -EINVAL; | |
1073 | ||
af1a02aa | 1074 | mutex_lock(&phydev->lock); |
64cd92d5 AL |
1075 | phydev->autoneg = autoneg; |
1076 | ||
1077 | if (autoneg == AUTONEG_DISABLE) { | |
1078 | phydev->speed = speed; | |
1079 | phydev->duplex = duplex; | |
1080 | } | |
1081 | ||
1082 | linkmode_copy(phydev->advertising, advertising); | |
1083 | ||
1084 | linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, | |
1085 | phydev->advertising, autoneg == AUTONEG_ENABLE); | |
1086 | ||
1087 | phydev->master_slave_set = cmd->base.master_slave_cfg; | |
1088 | phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; | |
1089 | ||
1090 | /* Restart the PHY */ | |
a4db9055 HK |
1091 | if (phy_is_started(phydev)) { |
1092 | phydev->state = PHY_UP; | |
1093 | phy_trigger_machine(phydev); | |
1094 | } else { | |
1095 | _phy_start_aneg(phydev); | |
1096 | } | |
64cd92d5 | 1097 | |
af1a02aa | 1098 | mutex_unlock(&phydev->lock); |
64cd92d5 AL |
1099 | return 0; |
1100 | } | |
1101 | EXPORT_SYMBOL(phy_ethtool_ksettings_set); | |
1102 | ||
2b9672dd HK |
1103 | /** |
1104 | * phy_speed_down - set speed to lowest speed supported by both link partners | |
1105 | * @phydev: the phy_device struct | |
1106 | * @sync: perform action synchronously | |
1107 | * | |
1108 | * Description: Typically used to save energy when waiting for a WoL packet | |
1109 | * | |
1110 | * WARNING: Setting sync to false may cause the system being unable to suspend | |
1111 | * in case the PHY generates an interrupt when finishing the autonegotiation. | |
1112 | * This interrupt may wake up the system immediately after suspend. | |
1113 | * Therefore use sync = false only if you're sure it's safe with the respective | |
1114 | * network chip. | |
1115 | */ | |
1116 | int phy_speed_down(struct phy_device *phydev, bool sync) | |
1117 | { | |
65b27995 | 1118 | __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp); |
2f987d48 AL |
1119 | int ret = 0; |
1120 | ||
1121 | mutex_lock(&phydev->lock); | |
2b9672dd HK |
1122 | |
1123 | if (phydev->autoneg != AUTONEG_ENABLE) | |
2f987d48 | 1124 | goto out; |
2b9672dd | 1125 | |
65b27995 HK |
1126 | linkmode_copy(adv_tmp, phydev->advertising); |
1127 | ||
1128 | ret = phy_speed_down_core(phydev); | |
1129 | if (ret) | |
2f987d48 | 1130 | goto out; |
2b9672dd | 1131 | |
65b27995 HK |
1132 | linkmode_copy(phydev->adv_old, adv_tmp); |
1133 | ||
2f987d48 AL |
1134 | if (linkmode_equal(phydev->advertising, adv_tmp)) { |
1135 | ret = 0; | |
1136 | goto out; | |
1137 | } | |
2b9672dd HK |
1138 | |
1139 | ret = phy_config_aneg(phydev); | |
1140 | if (ret) | |
2f987d48 AL |
1141 | goto out; |
1142 | ||
1143 | ret = sync ? phy_poll_aneg_done(phydev) : 0; | |
1144 | out: | |
1145 | mutex_unlock(&phydev->lock); | |
2b9672dd | 1146 | |
2f987d48 | 1147 | return ret; |
2b9672dd HK |
1148 | } |
1149 | EXPORT_SYMBOL_GPL(phy_speed_down); | |
1150 | ||
1151 | /** | |
1152 | * phy_speed_up - (re)set advertised speeds to all supported speeds | |
1153 | * @phydev: the phy_device struct | |
1154 | * | |
1155 | * Description: Used to revert the effect of phy_speed_down | |
1156 | */ | |
1157 | int phy_speed_up(struct phy_device *phydev) | |
1158 | { | |
65b27995 | 1159 | __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp); |
2f987d48 AL |
1160 | int ret = 0; |
1161 | ||
1162 | mutex_lock(&phydev->lock); | |
2b9672dd HK |
1163 | |
1164 | if (phydev->autoneg != AUTONEG_ENABLE) | |
2f987d48 | 1165 | goto out; |
2b9672dd | 1166 | |
65b27995 | 1167 | if (linkmode_empty(phydev->adv_old)) |
2f987d48 | 1168 | goto out; |
2b9672dd | 1169 | |
65b27995 HK |
1170 | linkmode_copy(adv_tmp, phydev->advertising); |
1171 | linkmode_copy(phydev->advertising, phydev->adv_old); | |
1172 | linkmode_zero(phydev->adv_old); | |
3c1bcc86 | 1173 | |
65b27995 | 1174 | if (linkmode_equal(phydev->advertising, adv_tmp)) |
2f987d48 AL |
1175 | goto out; |
1176 | ||
1177 | ret = phy_config_aneg(phydev); | |
1178 | out: | |
1179 | mutex_unlock(&phydev->lock); | |
2b9672dd | 1180 | |
2f987d48 | 1181 | return ret; |
2b9672dd HK |
1182 | } |
1183 | EXPORT_SYMBOL_GPL(phy_speed_up); | |
1184 | ||
b3df0da8 RD |
1185 | /** |
1186 | * phy_start_machine - start PHY state machine tracking | |
1187 | * @phydev: the phy_device struct | |
00db8189 | 1188 | * |
b3df0da8 | 1189 | * Description: The PHY infrastructure can run a state machine |
00db8189 | 1190 | * which tracks whether the PHY is starting up, negotiating, |
fb5e7606 FF |
1191 | * etc. This function starts the delayed workqueue which tracks |
1192 | * the state of the PHY. If you want to maintain your own state machine, | |
29935aeb | 1193 | * do not call this function. |
b3df0da8 | 1194 | */ |
29935aeb | 1195 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 1196 | { |
6384e483 | 1197 | phy_trigger_machine(phydev); |
00db8189 | 1198 | } |
5e5758d9 | 1199 | EXPORT_SYMBOL_GPL(phy_start_machine); |
00db8189 | 1200 | |
b3df0da8 RD |
1201 | /** |
1202 | * phy_stop_machine - stop the PHY state machine tracking | |
1203 | * @phydev: target phy_device struct | |
00db8189 | 1204 | * |
fb5e7606 FF |
1205 | * Description: Stops the state machine delayed workqueue, sets the |
1206 | * state to UP (unless it wasn't up yet). This function must be | |
1207 | * called BEFORE phy_detach. | |
00db8189 AF |
1208 | */ |
1209 | void phy_stop_machine(struct phy_device *phydev) | |
1210 | { | |
a390d1f3 | 1211 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 1212 | |
35b5f6b1 | 1213 | mutex_lock(&phydev->lock); |
a2fc9d7e | 1214 | if (phy_is_started(phydev)) |
00db8189 | 1215 | phydev->state = PHY_UP; |
35b5f6b1 | 1216 | mutex_unlock(&phydev->lock); |
00db8189 AF |
1217 | } |
1218 | ||
323fe43c FF |
1219 | static void phy_process_error(struct phy_device *phydev) |
1220 | { | |
a0e026e7 SS |
1221 | /* phydev->lock must be held for the state change to be safe */ |
1222 | if (!mutex_is_locked(&phydev->lock)) | |
1223 | phydev_err(phydev, "PHY-device data unsafe context\n"); | |
1224 | ||
59088b5a | 1225 | phydev->state = PHY_ERROR; |
323fe43c FF |
1226 | |
1227 | phy_trigger_machine(phydev); | |
1228 | } | |
1229 | ||
1230 | static void phy_error_precise(struct phy_device *phydev, | |
1231 | const void *func, int err) | |
1232 | { | |
1233 | WARN(1, "%pS: returned: %d\n", func, err); | |
a0e026e7 | 1234 | mutex_lock(&phydev->lock); |
323fe43c | 1235 | phy_process_error(phydev); |
a0e026e7 | 1236 | mutex_unlock(&phydev->lock); |
323fe43c FF |
1237 | } |
1238 | ||
b3df0da8 | 1239 | /** |
59088b5a | 1240 | * phy_error - enter ERROR state for this PHY device |
b3df0da8 | 1241 | * @phydev: target phy_device struct |
00db8189 | 1242 | * |
59088b5a | 1243 | * Moves the PHY to the ERROR state in response to a read |
00db8189 | 1244 | * or write error, and tells the controller the link is down. |
a0e026e7 | 1245 | * Must be called with phydev->lock held. |
00db8189 | 1246 | */ |
293e9a3d | 1247 | void phy_error(struct phy_device *phydev) |
00db8189 | 1248 | { |
fa7b28c1 | 1249 | WARN_ON(1); |
323fe43c | 1250 | phy_process_error(phydev); |
00db8189 | 1251 | } |
293e9a3d | 1252 | EXPORT_SYMBOL(phy_error); |
00db8189 | 1253 | |
a2c054a8 BM |
1254 | /** |
1255 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
1256 | * @phydev: target phy_device struct | |
1257 | */ | |
3dd4ef1b | 1258 | int phy_disable_interrupts(struct phy_device *phydev) |
a2c054a8 | 1259 | { |
a2c054a8 | 1260 | /* Disable PHY interrupts */ |
6527b938 | 1261 | return phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); |
a2c054a8 BM |
1262 | } |
1263 | ||
1264 | /** | |
34d884e3 HK |
1265 | * phy_interrupt - PHY interrupt handler |
1266 | * @irq: interrupt line | |
1267 | * @phy_dat: phy_device pointer | |
1268 | * | |
1269 | * Description: Handle PHY interrupt | |
a2c054a8 | 1270 | */ |
34d884e3 | 1271 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
a2c054a8 | 1272 | { |
34d884e3 | 1273 | struct phy_device *phydev = phy_dat; |
9010f9de | 1274 | struct phy_driver *drv = phydev->drv; |
91a7cda1 | 1275 | irqreturn_t ret; |
a2c054a8 | 1276 | |
1758bde2 LW |
1277 | /* Wakeup interrupts may occur during a system sleep transition. |
1278 | * Postpone handling until the PHY has resumed. | |
1279 | */ | |
1280 | if (IS_ENABLED(CONFIG_PM_SLEEP) && phydev->irq_suspended) { | |
1281 | struct net_device *netdev = phydev->attached_dev; | |
1282 | ||
1283 | if (netdev) { | |
1284 | struct device *parent = netdev->dev.parent; | |
1285 | ||
1286 | if (netdev->wol_enabled) | |
1287 | pm_system_wakeup(); | |
1288 | else if (device_may_wakeup(&netdev->dev)) | |
1289 | pm_wakeup_dev_event(&netdev->dev, 0, true); | |
1290 | else if (parent && device_may_wakeup(parent)) | |
1291 | pm_wakeup_dev_event(parent, 0, true); | |
1292 | } | |
1293 | ||
1294 | phydev->irq_rerun = 1; | |
1295 | disable_irq_nosync(irq); | |
1296 | return IRQ_HANDLED; | |
1297 | } | |
1298 | ||
91a7cda1 FD |
1299 | mutex_lock(&phydev->lock); |
1300 | ret = drv->handle_interrupt(phydev); | |
1301 | mutex_unlock(&phydev->lock); | |
1302 | ||
1303 | return ret; | |
a2c054a8 BM |
1304 | } |
1305 | ||
b3df0da8 RD |
1306 | /** |
1307 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
1308 | * @phydev: target phy_device struct | |
1309 | */ | |
89ff05ec | 1310 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 1311 | { |
553fe92b | 1312 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 1313 | } |
00db8189 | 1314 | |
b3df0da8 | 1315 | /** |
07b09289 | 1316 | * phy_request_interrupt - request and enable interrupt for a PHY device |
b3df0da8 | 1317 | * @phydev: target phy_device struct |
e1393456 | 1318 | * |
07b09289 | 1319 | * Description: Request and enable the interrupt for the given PHY. |
b3df0da8 | 1320 | * If this fails, then we set irq to PHY_POLL. |
e1393456 AF |
1321 | * This should only be called with a valid IRQ number. |
1322 | */ | |
434a4315 | 1323 | void phy_request_interrupt(struct phy_device *phydev) |
e1393456 | 1324 | { |
434a4315 HK |
1325 | int err; |
1326 | ||
1327 | err = request_threaded_irq(phydev->irq, NULL, phy_interrupt, | |
1328 | IRQF_ONESHOT | IRQF_SHARED, | |
1329 | phydev_name(phydev), phydev); | |
1330 | if (err) { | |
1331 | phydev_warn(phydev, "Error %d requesting IRQ %d, falling back to polling\n", | |
1332 | err, phydev->irq); | |
e1393456 | 1333 | phydev->irq = PHY_POLL; |
07b09289 HK |
1334 | } else { |
1335 | if (phy_enable_interrupts(phydev)) { | |
1336 | phydev_warn(phydev, "Can't enable interrupt, falling back to polling\n"); | |
1337 | phy_free_interrupt(phydev); | |
1338 | phydev->irq = PHY_POLL; | |
1339 | } | |
e1393456 | 1340 | } |
e1393456 | 1341 | } |
434a4315 | 1342 | EXPORT_SYMBOL(phy_request_interrupt); |
e1393456 | 1343 | |
07b09289 HK |
1344 | /** |
1345 | * phy_free_interrupt - disable and free interrupt for a PHY device | |
1346 | * @phydev: target phy_device struct | |
1347 | * | |
1348 | * Description: Disable and free the interrupt for the given PHY. | |
1349 | * This should only be called with a valid IRQ number. | |
1350 | */ | |
1351 | void phy_free_interrupt(struct phy_device *phydev) | |
1352 | { | |
1353 | phy_disable_interrupts(phydev); | |
1354 | free_irq(phydev->irq, phydev); | |
1355 | } | |
1356 | EXPORT_SYMBOL(phy_free_interrupt); | |
1357 | ||
b3df0da8 RD |
1358 | /** |
1359 | * phy_stop - Bring down the PHY link, and stop checking the status | |
1360 | * @phydev: target phy_device struct | |
1361 | */ | |
e1393456 AF |
1362 | void phy_stop(struct phy_device *phydev) |
1363 | { | |
4a459bdc | 1364 | struct net_device *dev = phydev->attached_dev; |
4203d840 | 1365 | enum phy_state old_state; |
4a459bdc | 1366 | |
59088b5a RKO |
1367 | if (!phy_is_started(phydev) && phydev->state != PHY_DOWN && |
1368 | phydev->state != PHY_ERROR) { | |
2b3e88ea HK |
1369 | WARN(1, "called from state %s\n", |
1370 | phy_state_to_str(phydev->state)); | |
2b3e88ea HK |
1371 | return; |
1372 | } | |
e1393456 | 1373 | |
a2fc9d7e | 1374 | mutex_lock(&phydev->lock); |
4203d840 | 1375 | old_state = phydev->state; |
a2fc9d7e | 1376 | |
4a459bdc | 1377 | if (phydev->state == PHY_CABLETEST) { |
a68a8138 | 1378 | phy_abort_cable_test(phydev); |
4a459bdc AL |
1379 | netif_testing_off(dev); |
1380 | } | |
a68a8138 | 1381 | |
298e54fa RK |
1382 | if (phydev->sfp_bus) |
1383 | sfp_upstream_stop(phydev->sfp_bus); | |
1384 | ||
6daf6531 | 1385 | phydev->state = PHY_HALTED; |
4203d840 | 1386 | phy_process_state_change(phydev, old_state); |
6daf6531 | 1387 | |
35b5f6b1 | 1388 | mutex_unlock(&phydev->lock); |
3c3070d7 | 1389 | |
e8cfd9d6 | 1390 | phy_state_machine(&phydev->state_queue.work); |
cbfd12b3 | 1391 | phy_stop_machine(phydev); |
e8cfd9d6 | 1392 | |
2f53e904 | 1393 | /* Cannot call flush_scheduled_work() here as desired because |
34d884e3 | 1394 | * of rtnl_lock(), but PHY_HALTED shall guarantee irq handler |
3c3070d7 MR |
1395 | * will not reenable interrupts. |
1396 | */ | |
e1393456 | 1397 | } |
2f53e904 | 1398 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 1399 | |
b3df0da8 RD |
1400 | /** |
1401 | * phy_start - start or restart a PHY device | |
1402 | * @phydev: target phy_device struct | |
e1393456 | 1403 | * |
b3df0da8 | 1404 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
1405 | * handle PHY-related work. Used during startup to start the |
1406 | * PHY, and after a call to phy_stop() to resume operation. | |
1407 | * Also used to indicate the MDIO bus has cleared an error | |
1408 | * condition. | |
1409 | */ | |
1410 | void phy_start(struct phy_device *phydev) | |
1411 | { | |
35b5f6b1 | 1412 | mutex_lock(&phydev->lock); |
e1393456 | 1413 | |
21796261 HK |
1414 | if (phydev->state != PHY_READY && phydev->state != PHY_HALTED) { |
1415 | WARN(1, "called from state %s\n", | |
1416 | phy_state_to_str(phydev->state)); | |
1417 | goto out; | |
1418 | } | |
1419 | ||
298e54fa RK |
1420 | if (phydev->sfp_bus) |
1421 | sfp_upstream_start(phydev->sfp_bus); | |
1422 | ||
9e573cfc HK |
1423 | /* if phy was suspended, bring the physical link up again */ |
1424 | __phy_resume(phydev); | |
c15e10e7 | 1425 | |
f24098f8 | 1426 | phydev->state = PHY_UP; |
9e573cfc HK |
1427 | |
1428 | phy_start_machine(phydev); | |
21796261 | 1429 | out: |
35b5f6b1 | 1430 | mutex_unlock(&phydev->lock); |
e1393456 | 1431 | } |
e1393456 | 1432 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 1433 | |
35b5f6b1 NC |
1434 | /** |
1435 | * phy_state_machine - Handle the state machine | |
1436 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 1437 | */ |
4f9c85a1 | 1438 | void phy_state_machine(struct work_struct *work) |
00db8189 | 1439 | { |
bf6aede7 | 1440 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 1441 | struct phy_device *phydev = |
a390d1f3 | 1442 | container_of(dwork, struct phy_device, state_queue); |
4a459bdc | 1443 | struct net_device *dev = phydev->attached_dev; |
c15e10e7 | 1444 | bool needs_aneg = false, do_suspend = false; |
3e2186e0 | 1445 | enum phy_state old_state; |
323fe43c | 1446 | const void *func = NULL; |
a68a8138 | 1447 | bool finished = false; |
00db8189 AF |
1448 | int err = 0; |
1449 | ||
35b5f6b1 | 1450 | mutex_lock(&phydev->lock); |
00db8189 | 1451 | |
3e2186e0 FF |
1452 | old_state = phydev->state; |
1453 | ||
e109374f FF |
1454 | switch (phydev->state) { |
1455 | case PHY_DOWN: | |
e109374f | 1456 | case PHY_READY: |
e109374f FF |
1457 | break; |
1458 | case PHY_UP: | |
6e14a5ee | 1459 | needs_aneg = true; |
00db8189 | 1460 | |
e109374f FF |
1461 | break; |
1462 | case PHY_NOLINK: | |
c8e977ba | 1463 | case PHY_RUNNING: |
c8e977ba | 1464 | err = phy_check_link_status(phydev); |
323fe43c | 1465 | func = &phy_check_link_status; |
e109374f | 1466 | break; |
a68a8138 AL |
1467 | case PHY_CABLETEST: |
1468 | err = phydev->drv->cable_test_get_status(phydev, &finished); | |
1469 | if (err) { | |
1470 | phy_abort_cable_test(phydev); | |
4a459bdc | 1471 | netif_testing_off(dev); |
a68a8138 AL |
1472 | needs_aneg = true; |
1473 | phydev->state = PHY_UP; | |
1474 | break; | |
1475 | } | |
1476 | ||
1477 | if (finished) { | |
1dd3f212 | 1478 | ethnl_cable_test_finished(phydev); |
4a459bdc | 1479 | netif_testing_off(dev); |
a68a8138 AL |
1480 | needs_aneg = true; |
1481 | phydev->state = PHY_UP; | |
1482 | } | |
1483 | break; | |
e109374f | 1484 | case PHY_HALTED: |
59088b5a | 1485 | case PHY_ERROR: |
e109374f FF |
1486 | if (phydev->link) { |
1487 | phydev->link = 0; | |
a307593a | 1488 | phy_link_down(phydev); |
e109374f | 1489 | } |
95fb8bb3 | 1490 | do_suspend = true; |
e109374f | 1491 | break; |
00db8189 AF |
1492 | } |
1493 | ||
35b5f6b1 | 1494 | mutex_unlock(&phydev->lock); |
00db8189 | 1495 | |
323fe43c | 1496 | if (needs_aneg) { |
c45d7150 | 1497 | err = phy_start_aneg(phydev); |
323fe43c FF |
1498 | func = &phy_start_aneg; |
1499 | } else if (do_suspend) { | |
be9dad1f | 1500 | phy_suspend(phydev); |
323fe43c | 1501 | } |
be9dad1f | 1502 | |
06edf1a9 OR |
1503 | if (err == -ENODEV) |
1504 | return; | |
1505 | ||
00db8189 | 1506 | if (err < 0) |
323fe43c | 1507 | phy_error_precise(phydev, func, err); |
00db8189 | 1508 | |
4203d840 | 1509 | phy_process_state_change(phydev, old_state); |
3e2186e0 | 1510 | |
d5c3d846 | 1511 | /* Only re-schedule a PHY state machine change if we are polling the |
93e8990c | 1512 | * PHY, if PHY_MAC_INTERRUPT is set, then we will be moving |
075ddebc HK |
1513 | * between states from phy_mac_interrupt(). |
1514 | * | |
1515 | * In state PHY_HALTED the PHY gets suspended, so rescheduling the | |
1516 | * state machine would be pointless and possibly error prone when | |
1517 | * called from phy_disconnect() synchronously. | |
d5c3d846 | 1518 | */ |
a2004907 | 1519 | mutex_lock(&phydev->lock); |
2b3e88ea | 1520 | if (phy_polling_mode(phydev) && phy_is_started(phydev)) |
9f2959b6 | 1521 | phy_queue_state_machine(phydev, PHY_STATE_TIME); |
a2004907 | 1522 | mutex_unlock(&phydev->lock); |
35b5f6b1 | 1523 | } |
a59a4d19 | 1524 | |
664fcf12 AL |
1525 | /** |
1526 | * phy_mac_interrupt - MAC says the link has changed | |
1527 | * @phydev: phy_device struct with changed link | |
664fcf12 | 1528 | * |
28b2e0d2 HK |
1529 | * The MAC layer is able to indicate there has been a change in the PHY link |
1530 | * status. Trigger the state machine and work a work queue. | |
664fcf12 | 1531 | */ |
28b2e0d2 | 1532 | void phy_mac_interrupt(struct phy_device *phydev) |
5ea94e76 | 1533 | { |
deccd16f | 1534 | /* Trigger a state machine change */ |
d73a2156 | 1535 | phy_trigger_machine(phydev); |
5ea94e76 FF |
1536 | } |
1537 | EXPORT_SYMBOL(phy_mac_interrupt); | |
1538 | ||
a59a4d19 GC |
1539 | /** |
1540 | * phy_init_eee - init and check the EEE feature | |
1541 | * @phydev: target phy_device struct | |
1542 | * @clk_stop_enable: PHY may stop the clock during LPI | |
1543 | * | |
1544 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
1545 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
1546 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
1547 | * bit if required. | |
1548 | */ | |
1549 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
1550 | { | |
6340f9fd OR |
1551 | int ret; |
1552 | ||
25149ef9 FF |
1553 | if (!phydev->drv) |
1554 | return -EIO; | |
1555 | ||
6340f9fd OR |
1556 | ret = genphy_c45_eee_is_active(phydev, NULL, NULL, NULL); |
1557 | if (ret < 0) | |
1558 | return ret; | |
1559 | if (!ret) | |
1560 | return -EPROTONOSUPPORT; | |
a59a4d19 | 1561 | |
6340f9fd OR |
1562 | if (clk_stop_enable) |
1563 | /* Configure the PHY to stop receiving xMII | |
1564 | * clock while it is signaling LPI. | |
1565 | */ | |
1566 | ret = phy_set_bits_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, | |
1567 | MDIO_PCS_CTRL1_CLKSTOP_EN); | |
a59a4d19 | 1568 | |
6340f9fd | 1569 | return ret < 0 ? ret : 0; |
a59a4d19 GC |
1570 | } |
1571 | EXPORT_SYMBOL(phy_init_eee); | |
1572 | ||
1573 | /** | |
1574 | * phy_get_eee_err - report the EEE wake error count | |
1575 | * @phydev: target phy_device struct | |
1576 | * | |
1577 | * Description: it is to report the number of time where the PHY | |
1578 | * failed to complete its normal wake sequence. | |
1579 | */ | |
1580 | int phy_get_eee_err(struct phy_device *phydev) | |
1581 | { | |
2f987d48 AL |
1582 | int ret; |
1583 | ||
25149ef9 FF |
1584 | if (!phydev->drv) |
1585 | return -EIO; | |
1586 | ||
2f987d48 AL |
1587 | mutex_lock(&phydev->lock); |
1588 | ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR); | |
1589 | mutex_unlock(&phydev->lock); | |
1590 | ||
1591 | return ret; | |
a59a4d19 GC |
1592 | } |
1593 | EXPORT_SYMBOL(phy_get_eee_err); | |
1594 | ||
1595 | /** | |
1596 | * phy_ethtool_get_eee - get EEE supported and status | |
1597 | * @phydev: target phy_device struct | |
1598 | * @data: ethtool_eee data | |
1599 | * | |
1600 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1601 | * capabilities. | |
1602 | */ | |
1603 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1604 | { | |
2f987d48 AL |
1605 | int ret; |
1606 | ||
25149ef9 FF |
1607 | if (!phydev->drv) |
1608 | return -EIO; | |
1609 | ||
2f987d48 AL |
1610 | mutex_lock(&phydev->lock); |
1611 | ret = genphy_c45_ethtool_get_eee(phydev, data); | |
1612 | mutex_unlock(&phydev->lock); | |
1613 | ||
1614 | return ret; | |
a59a4d19 GC |
1615 | } |
1616 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1617 | ||
1618 | /** | |
1619 | * phy_ethtool_set_eee - set EEE supported and status | |
1620 | * @phydev: target phy_device struct | |
1621 | * @data: ethtool_eee data | |
1622 | * | |
1623 | * Description: it is to program the Advertisement EEE register. | |
1624 | */ | |
1625 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1626 | { | |
2f987d48 AL |
1627 | int ret; |
1628 | ||
25149ef9 FF |
1629 | if (!phydev->drv) |
1630 | return -EIO; | |
1631 | ||
2f987d48 AL |
1632 | mutex_lock(&phydev->lock); |
1633 | ret = genphy_c45_ethtool_set_eee(phydev, data); | |
1634 | mutex_unlock(&phydev->lock); | |
1635 | ||
1636 | return ret; | |
a59a4d19 GC |
1637 | } |
1638 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb | 1639 | |
4069a572 AL |
1640 | /** |
1641 | * phy_ethtool_set_wol - Configure Wake On LAN | |
1642 | * | |
1643 | * @phydev: target phy_device struct | |
1644 | * @wol: Configuration requested | |
1645 | */ | |
42e836eb MS |
1646 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) |
1647 | { | |
2f987d48 AL |
1648 | int ret; |
1649 | ||
1650 | if (phydev->drv && phydev->drv->set_wol) { | |
1651 | mutex_lock(&phydev->lock); | |
1652 | ret = phydev->drv->set_wol(phydev, wol); | |
1653 | mutex_unlock(&phydev->lock); | |
1654 | ||
1655 | return ret; | |
1656 | } | |
42e836eb MS |
1657 | |
1658 | return -EOPNOTSUPP; | |
1659 | } | |
1660 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1661 | ||
4069a572 AL |
1662 | /** |
1663 | * phy_ethtool_get_wol - Get the current Wake On LAN configuration | |
1664 | * | |
1665 | * @phydev: target phy_device struct | |
1666 | * @wol: Store the current configuration here | |
1667 | */ | |
42e836eb MS |
1668 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) |
1669 | { | |
2f987d48 AL |
1670 | if (phydev->drv && phydev->drv->get_wol) { |
1671 | mutex_lock(&phydev->lock); | |
42e836eb | 1672 | phydev->drv->get_wol(phydev, wol); |
2f987d48 AL |
1673 | mutex_unlock(&phydev->lock); |
1674 | } | |
42e836eb MS |
1675 | } |
1676 | EXPORT_SYMBOL(phy_ethtool_get_wol); | |
9d9a77ce PR |
1677 | |
1678 | int phy_ethtool_get_link_ksettings(struct net_device *ndev, | |
1679 | struct ethtool_link_ksettings *cmd) | |
1680 | { | |
1681 | struct phy_device *phydev = ndev->phydev; | |
1682 | ||
1683 | if (!phydev) | |
1684 | return -ENODEV; | |
1685 | ||
5514174f | 1686 | phy_ethtool_ksettings_get(phydev, cmd); |
1687 | ||
1688 | return 0; | |
9d9a77ce PR |
1689 | } |
1690 | EXPORT_SYMBOL(phy_ethtool_get_link_ksettings); | |
1691 | ||
1692 | int phy_ethtool_set_link_ksettings(struct net_device *ndev, | |
1693 | const struct ethtool_link_ksettings *cmd) | |
1694 | { | |
1695 | struct phy_device *phydev = ndev->phydev; | |
1696 | ||
1697 | if (!phydev) | |
1698 | return -ENODEV; | |
1699 | ||
1700 | return phy_ethtool_ksettings_set(phydev, cmd); | |
1701 | } | |
1702 | EXPORT_SYMBOL(phy_ethtool_set_link_ksettings); | |
e86a8987 | 1703 | |
4069a572 AL |
1704 | /** |
1705 | * phy_ethtool_nway_reset - Restart auto negotiation | |
1706 | * @ndev: Network device to restart autoneg for | |
1707 | */ | |
e86a8987 FF |
1708 | int phy_ethtool_nway_reset(struct net_device *ndev) |
1709 | { | |
1710 | struct phy_device *phydev = ndev->phydev; | |
2f987d48 | 1711 | int ret; |
e86a8987 FF |
1712 | |
1713 | if (!phydev) | |
1714 | return -ENODEV; | |
1715 | ||
25149ef9 FF |
1716 | if (!phydev->drv) |
1717 | return -EIO; | |
1718 | ||
2f987d48 AL |
1719 | mutex_lock(&phydev->lock); |
1720 | ret = phy_restart_aneg(phydev); | |
1721 | mutex_unlock(&phydev->lock); | |
1722 | ||
1723 | return ret; | |
e86a8987 FF |
1724 | } |
1725 | EXPORT_SYMBOL(phy_ethtool_nway_reset); |