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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> | |
18 | #include <linux/etherdevice.h> | |
19 | #include <linux/skbuff.h> | |
00db8189 AF |
20 | #include <linux/mm.h> |
21 | #include <linux/module.h> | |
00db8189 AF |
22 | #include <linux/mii.h> |
23 | #include <linux/ethtool.h> | |
24 | #include <linux/phy.h> | |
d6f8cfa3 | 25 | #include <linux/phy_led_triggers.h> |
298e54fa | 26 | #include <linux/sfp.h> |
3c3070d7 | 27 | #include <linux/workqueue.h> |
a59a4d19 | 28 | #include <linux/mdio.h> |
2f53e904 SS |
29 | #include <linux/io.h> |
30 | #include <linux/uaccess.h> | |
60063497 | 31 | #include <linux/atomic.h> |
2f53e904 | 32 | |
97b33bdf HK |
33 | #define PHY_STATE_TIME HZ |
34 | ||
3e2186e0 FF |
35 | #define PHY_STATE_STR(_state) \ |
36 | case PHY_##_state: \ | |
37 | return __stringify(_state); \ | |
38 | ||
39 | static const char *phy_state_to_str(enum phy_state st) | |
40 | { | |
41 | switch (st) { | |
42 | PHY_STATE_STR(DOWN) | |
3e2186e0 | 43 | PHY_STATE_STR(READY) |
3e2186e0 | 44 | PHY_STATE_STR(UP) |
3e2186e0 FF |
45 | PHY_STATE_STR(RUNNING) |
46 | PHY_STATE_STR(NOLINK) | |
3e2186e0 | 47 | PHY_STATE_STR(HALTED) |
3e2186e0 FF |
48 | } |
49 | ||
50 | return NULL; | |
51 | } | |
52 | ||
74a992b3 HK |
53 | static void phy_link_up(struct phy_device *phydev) |
54 | { | |
55 | phydev->phy_link_change(phydev, true, true); | |
56 | phy_led_trigger_change_speed(phydev); | |
57 | } | |
58 | ||
59 | static void phy_link_down(struct phy_device *phydev, bool do_carrier) | |
60 | { | |
61 | phydev->phy_link_change(phydev, false, do_carrier); | |
62 | phy_led_trigger_change_speed(phydev); | |
63 | } | |
3e2186e0 | 64 | |
23bfaa59 HK |
65 | static const char *phy_pause_str(struct phy_device *phydev) |
66 | { | |
67 | bool local_pause, local_asym_pause; | |
68 | ||
69 | if (phydev->autoneg == AUTONEG_DISABLE) | |
70 | goto no_pause; | |
71 | ||
72 | local_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT, | |
73 | phydev->advertising); | |
74 | local_asym_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, | |
75 | phydev->advertising); | |
76 | ||
77 | if (local_pause && phydev->pause) | |
78 | return "rx/tx"; | |
79 | ||
80 | if (local_asym_pause && phydev->asym_pause) { | |
81 | if (local_pause) | |
82 | return "rx"; | |
83 | if (phydev->pause) | |
84 | return "tx"; | |
85 | } | |
86 | ||
87 | no_pause: | |
88 | return "off"; | |
89 | } | |
90 | ||
b3df0da8 RD |
91 | /** |
92 | * phy_print_status - Convenience function to print out the current phy status | |
93 | * @phydev: the phy_device struct | |
e1393456 AF |
94 | */ |
95 | void phy_print_status(struct phy_device *phydev) | |
96 | { | |
2f53e904 | 97 | if (phydev->link) { |
df40cc88 | 98 | netdev_info(phydev->attached_dev, |
5eee3bb7 | 99 | "Link is Up - %s/%s %s- flow control %s\n", |
766d1d38 | 100 | phy_speed_to_str(phydev->speed), |
da4625ac | 101 | phy_duplex_to_str(phydev->duplex), |
5eee3bb7 | 102 | phydev->downshifted_rate ? "(downshifted) " : "", |
23bfaa59 | 103 | phy_pause_str(phydev)); |
2f53e904 | 104 | } else { |
43b6329f | 105 | netdev_info(phydev->attached_dev, "Link is Down\n"); |
2f53e904 | 106 | } |
e1393456 AF |
107 | } |
108 | EXPORT_SYMBOL(phy_print_status); | |
00db8189 | 109 | |
b3df0da8 RD |
110 | /** |
111 | * phy_clear_interrupt - Ack the phy device's interrupt | |
112 | * @phydev: the phy_device struct | |
113 | * | |
114 | * If the @phydev driver has an ack_interrupt function, call it to | |
115 | * ack and clear the phy device's interrupt. | |
116 | * | |
ad033506 | 117 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 118 | */ |
89ff05ec | 119 | static int phy_clear_interrupt(struct phy_device *phydev) |
00db8189 | 120 | { |
00db8189 | 121 | if (phydev->drv->ack_interrupt) |
e62a768f | 122 | return phydev->drv->ack_interrupt(phydev); |
00db8189 | 123 | |
e62a768f | 124 | return 0; |
00db8189 AF |
125 | } |
126 | ||
b3df0da8 RD |
127 | /** |
128 | * phy_config_interrupt - configure the PHY device for the requested interrupts | |
129 | * @phydev: the phy_device struct | |
130 | * @interrupts: interrupt flags to configure for this @phydev | |
131 | * | |
ad033506 | 132 | * Returns 0 on success or < 0 on error. |
b3df0da8 | 133 | */ |
695bce8f | 134 | static int phy_config_interrupt(struct phy_device *phydev, bool interrupts) |
00db8189 | 135 | { |
695bce8f | 136 | phydev->interrupts = interrupts ? 1 : 0; |
00db8189 | 137 | if (phydev->drv->config_intr) |
e62a768f | 138 | return phydev->drv->config_intr(phydev); |
00db8189 | 139 | |
e62a768f | 140 | return 0; |
00db8189 AF |
141 | } |
142 | ||
002ba705 RK |
143 | /** |
144 | * phy_restart_aneg - restart auto-negotiation | |
145 | * @phydev: target phy_device struct | |
146 | * | |
147 | * Restart the autonegotiation on @phydev. Returns >= 0 on success or | |
148 | * negative errno on error. | |
149 | */ | |
150 | int phy_restart_aneg(struct phy_device *phydev) | |
151 | { | |
152 | int ret; | |
153 | ||
154 | if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0))) | |
155 | ret = genphy_c45_restart_aneg(phydev); | |
156 | else | |
157 | ret = genphy_restart_aneg(phydev); | |
158 | ||
159 | return ret; | |
160 | } | |
161 | EXPORT_SYMBOL_GPL(phy_restart_aneg); | |
00db8189 | 162 | |
b3df0da8 RD |
163 | /** |
164 | * phy_aneg_done - return auto-negotiation status | |
165 | * @phydev: target phy_device struct | |
00db8189 | 166 | * |
76a423a3 FF |
167 | * Description: Return the auto-negotiation status from this @phydev |
168 | * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation | |
169 | * is still pending. | |
00db8189 | 170 | */ |
372788f9 | 171 | int phy_aneg_done(struct phy_device *phydev) |
00db8189 | 172 | { |
65f2767a | 173 | if (phydev->drv && phydev->drv->aneg_done) |
76a423a3 | 174 | return phydev->drv->aneg_done(phydev); |
d7bed825 HK |
175 | else if (phydev->is_c45) |
176 | return genphy_c45_aneg_done(phydev); | |
177 | else | |
178 | return genphy_aneg_done(phydev); | |
00db8189 | 179 | } |
372788f9 | 180 | EXPORT_SYMBOL(phy_aneg_done); |
00db8189 | 181 | |
b3df0da8 | 182 | /** |
d0613037 RK |
183 | * phy_find_valid - find a PHY setting that matches the requested parameters |
184 | * @speed: desired speed | |
185 | * @duplex: desired duplex | |
186 | * @supported: mask of supported link modes | |
00db8189 | 187 | * |
d0613037 RK |
188 | * Locate a supported phy setting that is, in priority order: |
189 | * - an exact match for the specified speed and duplex mode | |
190 | * - a match for the specified speed, or slower speed | |
191 | * - the slowest supported speed | |
192 | * Returns the matched phy_setting entry, or %NULL if no supported phy | |
193 | * settings were found. | |
00db8189 | 194 | */ |
d0613037 | 195 | static const struct phy_setting * |
3c1bcc86 | 196 | phy_find_valid(int speed, int duplex, unsigned long *supported) |
00db8189 | 197 | { |
3c1bcc86 | 198 | return phy_lookup_setting(speed, duplex, supported, false); |
00db8189 AF |
199 | } |
200 | ||
1f9127ca ZB |
201 | /** |
202 | * phy_supported_speeds - return all speeds currently supported by a phy device | |
203 | * @phy: The phy device to return supported speeds of. | |
204 | * @speeds: buffer to store supported speeds in. | |
205 | * @size: size of speeds buffer. | |
206 | * | |
207 | * Description: Returns the number of supported speeds, and fills the speeds | |
208 | * buffer with the supported speeds. If speeds buffer is too small to contain | |
209 | * all currently supported speeds, will return as many speeds as can fit. | |
210 | */ | |
211 | unsigned int phy_supported_speeds(struct phy_device *phy, | |
212 | unsigned int *speeds, | |
213 | unsigned int size) | |
214 | { | |
3c1bcc86 | 215 | return phy_speeds(speeds, size, phy->supported); |
1f9127ca ZB |
216 | } |
217 | ||
54da5a8b GR |
218 | /** |
219 | * phy_check_valid - check if there is a valid PHY setting which matches | |
220 | * speed, duplex, and feature mask | |
221 | * @speed: speed to match | |
222 | * @duplex: duplex to match | |
223 | * @features: A mask of the valid settings | |
224 | * | |
225 | * Description: Returns true if there is a valid setting, false otherwise. | |
226 | */ | |
3c1bcc86 AL |
227 | static inline bool phy_check_valid(int speed, int duplex, |
228 | unsigned long *features) | |
54da5a8b | 229 | { |
3c1bcc86 | 230 | return !!phy_lookup_setting(speed, duplex, features, true); |
54da5a8b GR |
231 | } |
232 | ||
b3df0da8 RD |
233 | /** |
234 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex | |
235 | * @phydev: the target phy_device struct | |
00db8189 | 236 | * |
b3df0da8 | 237 | * Description: Make sure the PHY is set to supported speeds and |
00db8189 | 238 | * duplexes. Drop down by one in this order: 1000/FULL, |
b3df0da8 | 239 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
00db8189 | 240 | */ |
89ff05ec | 241 | static void phy_sanitize_settings(struct phy_device *phydev) |
00db8189 | 242 | { |
d0613037 | 243 | const struct phy_setting *setting; |
00db8189 | 244 | |
3c1bcc86 AL |
245 | setting = phy_find_valid(phydev->speed, phydev->duplex, |
246 | phydev->supported); | |
d0613037 RK |
247 | if (setting) { |
248 | phydev->speed = setting->speed; | |
249 | phydev->duplex = setting->duplex; | |
250 | } else { | |
251 | /* We failed to find anything (no supported speeds?) */ | |
252 | phydev->speed = SPEED_UNKNOWN; | |
253 | phydev->duplex = DUPLEX_UNKNOWN; | |
254 | } | |
00db8189 | 255 | } |
00db8189 | 256 | |
2d55173e PR |
257 | int phy_ethtool_ksettings_set(struct phy_device *phydev, |
258 | const struct ethtool_link_ksettings *cmd) | |
259 | { | |
3c1bcc86 | 260 | __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); |
2d55173e PR |
261 | u8 autoneg = cmd->base.autoneg; |
262 | u8 duplex = cmd->base.duplex; | |
263 | u32 speed = cmd->base.speed; | |
2d55173e PR |
264 | |
265 | if (cmd->base.phy_address != phydev->mdio.addr) | |
266 | return -EINVAL; | |
267 | ||
3c1bcc86 | 268 | linkmode_copy(advertising, cmd->link_modes.advertising); |
2d55173e PR |
269 | |
270 | /* We make sure that we don't pass unsupported values in to the PHY */ | |
3c1bcc86 | 271 | linkmode_and(advertising, advertising, phydev->supported); |
2d55173e PR |
272 | |
273 | /* Verify the settings we care about. */ | |
274 | if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) | |
275 | return -EINVAL; | |
276 | ||
3e536cff | 277 | if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) |
2d55173e PR |
278 | return -EINVAL; |
279 | ||
280 | if (autoneg == AUTONEG_DISABLE && | |
281 | ((speed != SPEED_1000 && | |
282 | speed != SPEED_100 && | |
283 | speed != SPEED_10) || | |
284 | (duplex != DUPLEX_HALF && | |
285 | duplex != DUPLEX_FULL))) | |
286 | return -EINVAL; | |
287 | ||
288 | phydev->autoneg = autoneg; | |
289 | ||
290 | phydev->speed = speed; | |
291 | ||
3c1bcc86 | 292 | linkmode_copy(phydev->advertising, advertising); |
2d55173e | 293 | |
ccf355e5 FH |
294 | linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, |
295 | phydev->advertising, autoneg == AUTONEG_ENABLE); | |
2d55173e PR |
296 | |
297 | phydev->duplex = duplex; | |
298 | ||
1004ee61 | 299 | phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; |
2d55173e PR |
300 | |
301 | /* Restart the PHY */ | |
302 | phy_start_aneg(phydev); | |
303 | ||
304 | return 0; | |
305 | } | |
306 | EXPORT_SYMBOL(phy_ethtool_ksettings_set); | |
307 | ||
5514174f | 308 | void phy_ethtool_ksettings_get(struct phy_device *phydev, |
309 | struct ethtool_link_ksettings *cmd) | |
2d55173e | 310 | { |
3c1bcc86 AL |
311 | linkmode_copy(cmd->link_modes.supported, phydev->supported); |
312 | linkmode_copy(cmd->link_modes.advertising, phydev->advertising); | |
c0ec3c27 | 313 | linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising); |
2d55173e PR |
314 | |
315 | cmd->base.speed = phydev->speed; | |
316 | cmd->base.duplex = phydev->duplex; | |
317 | if (phydev->interface == PHY_INTERFACE_MODE_MOCA) | |
318 | cmd->base.port = PORT_BNC; | |
319 | else | |
320 | cmd->base.port = PORT_MII; | |
ceb62813 FF |
321 | cmd->base.transceiver = phy_is_internal(phydev) ? |
322 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
2d55173e PR |
323 | cmd->base.phy_address = phydev->mdio.addr; |
324 | cmd->base.autoneg = phydev->autoneg; | |
1004ee61 RL |
325 | cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; |
326 | cmd->base.eth_tp_mdix = phydev->mdix; | |
2d55173e PR |
327 | } |
328 | EXPORT_SYMBOL(phy_ethtool_ksettings_get); | |
00db8189 | 329 | |
b3df0da8 RD |
330 | /** |
331 | * phy_mii_ioctl - generic PHY MII ioctl interface | |
332 | * @phydev: the phy_device struct | |
00c7d920 | 333 | * @ifr: &struct ifreq for socket ioctl's |
b3df0da8 RD |
334 | * @cmd: ioctl cmd to execute |
335 | * | |
336 | * Note that this function is currently incompatible with the | |
00db8189 | 337 | * PHYCONTROL layer. It changes registers without regard to |
b3df0da8 | 338 | * current state. Use at own risk. |
00db8189 | 339 | */ |
2f53e904 | 340 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
00db8189 | 341 | { |
28b04113 | 342 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
00db8189 | 343 | u16 val = mii_data->val_in; |
79ce0477 | 344 | bool change_autoneg = false; |
cdea04c2 | 345 | int prtad, devad; |
00db8189 AF |
346 | |
347 | switch (cmd) { | |
348 | case SIOCGMIIPHY: | |
e5a03bfd | 349 | mii_data->phy_id = phydev->mdio.addr; |
c6d6a511 LB |
350 | /* fall through */ |
351 | ||
00db8189 | 352 | case SIOCGMIIREG: |
cdea04c2 RK |
353 | if (mdio_phy_id_is_c45(mii_data->phy_id)) { |
354 | prtad = mdio_phy_id_prtad(mii_data->phy_id); | |
355 | devad = mdio_phy_id_devad(mii_data->phy_id); | |
356 | devad = MII_ADDR_C45 | devad << 16 | mii_data->reg_num; | |
357 | } else { | |
358 | prtad = mii_data->phy_id; | |
359 | devad = mii_data->reg_num; | |
360 | } | |
361 | mii_data->val_out = mdiobus_read(phydev->mdio.bus, prtad, | |
362 | devad); | |
e62a768f | 363 | return 0; |
00db8189 AF |
364 | |
365 | case SIOCSMIIREG: | |
cdea04c2 RK |
366 | if (mdio_phy_id_is_c45(mii_data->phy_id)) { |
367 | prtad = mdio_phy_id_prtad(mii_data->phy_id); | |
368 | devad = mdio_phy_id_devad(mii_data->phy_id); | |
369 | devad = MII_ADDR_C45 | devad << 16 | mii_data->reg_num; | |
370 | } else { | |
371 | prtad = mii_data->phy_id; | |
372 | devad = mii_data->reg_num; | |
373 | } | |
374 | if (prtad == phydev->mdio.addr) { | |
375 | switch (devad) { | |
00db8189 | 376 | case MII_BMCR: |
79ce0477 BH |
377 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { |
378 | if (phydev->autoneg == AUTONEG_ENABLE) | |
379 | change_autoneg = true; | |
00db8189 | 380 | phydev->autoneg = AUTONEG_DISABLE; |
79ce0477 BH |
381 | if (val & BMCR_FULLDPLX) |
382 | phydev->duplex = DUPLEX_FULL; | |
383 | else | |
384 | phydev->duplex = DUPLEX_HALF; | |
385 | if (val & BMCR_SPEED1000) | |
386 | phydev->speed = SPEED_1000; | |
387 | else if (val & BMCR_SPEED100) | |
388 | phydev->speed = SPEED_100; | |
389 | else phydev->speed = SPEED_10; | |
390 | } | |
391 | else { | |
392 | if (phydev->autoneg == AUTONEG_DISABLE) | |
393 | change_autoneg = true; | |
00db8189 | 394 | phydev->autoneg = AUTONEG_ENABLE; |
79ce0477 | 395 | } |
00db8189 AF |
396 | break; |
397 | case MII_ADVERTISE: | |
9db299c7 AL |
398 | mii_adv_mod_linkmode_adv_t(phydev->advertising, |
399 | val); | |
79ce0477 | 400 | change_autoneg = true; |
00db8189 | 401 | break; |
4cf6c57e RK |
402 | case MII_CTRL1000: |
403 | mii_ctrl1000_mod_linkmode_adv_t(phydev->advertising, | |
404 | val); | |
405 | change_autoneg = true; | |
406 | break; | |
00db8189 AF |
407 | default: |
408 | /* do nothing */ | |
409 | break; | |
410 | } | |
411 | } | |
412 | ||
cdea04c2 | 413 | mdiobus_write(phydev->mdio.bus, prtad, devad, val); |
af1dc13e | 414 | |
cdea04c2 RK |
415 | if (prtad == phydev->mdio.addr && |
416 | devad == MII_BMCR && | |
2613f95f | 417 | val & BMCR_RESET) |
e62a768f | 418 | return phy_init_hw(phydev); |
79ce0477 BH |
419 | |
420 | if (change_autoneg) | |
421 | return phy_start_aneg(phydev); | |
422 | ||
e62a768f | 423 | return 0; |
dda93b48 | 424 | |
c1f19b51 | 425 | case SIOCSHWTSTAMP: |
4715f65f RC |
426 | if (phydev->mii_ts && phydev->mii_ts->hwtstamp) |
427 | return phydev->mii_ts->hwtstamp(phydev->mii_ts, ifr); | |
c1f19b51 RC |
428 | /* fall through */ |
429 | ||
dda93b48 | 430 | default: |
c6d6a511 | 431 | return -EOPNOTSUPP; |
00db8189 | 432 | } |
00db8189 | 433 | } |
680e9fe9 | 434 | EXPORT_SYMBOL(phy_mii_ioctl); |
00db8189 | 435 | |
2ab1d925 | 436 | /** |
bbbf8430 | 437 | * phy_do_ioctl - generic ndo_do_ioctl implementation |
2ab1d925 HK |
438 | * @dev: the net_device struct |
439 | * @ifr: &struct ifreq for socket ioctl's | |
440 | * @cmd: ioctl cmd to execute | |
441 | */ | |
bbbf8430 | 442 | int phy_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
2ab1d925 | 443 | { |
bbbf8430 | 444 | if (!dev->phydev) |
2ab1d925 HK |
445 | return -ENODEV; |
446 | ||
447 | return phy_mii_ioctl(dev->phydev, ifr, cmd); | |
448 | } | |
bbbf8430 HK |
449 | EXPORT_SYMBOL(phy_do_ioctl); |
450 | ||
451 | /* same as phy_do_ioctl, but ensures that net_device is running */ | |
452 | int phy_do_ioctl_running(struct net_device *dev, struct ifreq *ifr, int cmd) | |
453 | { | |
454 | if (!netif_running(dev)) | |
455 | return -ENODEV; | |
456 | ||
457 | return phy_do_ioctl(dev, ifr, cmd); | |
458 | } | |
3231e5d2 | 459 | EXPORT_SYMBOL(phy_do_ioctl_running); |
2ab1d925 | 460 | |
97b33bdf | 461 | void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies) |
a3320bcf HK |
462 | { |
463 | mod_delayed_work(system_power_efficient_wq, &phydev->state_queue, | |
97b33bdf | 464 | jiffies); |
a3320bcf | 465 | } |
97b33bdf | 466 | EXPORT_SYMBOL(phy_queue_state_machine); |
a3320bcf HK |
467 | |
468 | static void phy_trigger_machine(struct phy_device *phydev) | |
469 | { | |
470 | phy_queue_state_machine(phydev, 0); | |
471 | } | |
472 | ||
76299580 HK |
473 | static int phy_config_aneg(struct phy_device *phydev) |
474 | { | |
475 | if (phydev->drv->config_aneg) | |
476 | return phydev->drv->config_aneg(phydev); | |
34786005 CG |
477 | |
478 | /* Clause 45 PHYs that don't implement Clause 22 registers are not | |
479 | * allowed to call genphy_config_aneg() | |
480 | */ | |
481 | if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0))) | |
94acaeb5 | 482 | return genphy_c45_config_aneg(phydev); |
34786005 CG |
483 | |
484 | return genphy_config_aneg(phydev); | |
76299580 HK |
485 | } |
486 | ||
74a992b3 HK |
487 | /** |
488 | * phy_check_link_status - check link status and set state accordingly | |
489 | * @phydev: the phy_device struct | |
490 | * | |
491 | * Description: Check for link and whether autoneg was triggered / is running | |
492 | * and set state accordingly | |
493 | */ | |
494 | static int phy_check_link_status(struct phy_device *phydev) | |
495 | { | |
496 | int err; | |
497 | ||
498 | WARN_ON(!mutex_is_locked(&phydev->lock)); | |
499 | ||
fe4a7a41 JA |
500 | /* Keep previous state if loopback is enabled because some PHYs |
501 | * report that Link is Down when loopback is enabled. | |
502 | */ | |
503 | if (phydev->loopback_enabled) | |
504 | return 0; | |
505 | ||
74a992b3 HK |
506 | err = phy_read_status(phydev); |
507 | if (err) | |
508 | return err; | |
509 | ||
510 | if (phydev->link && phydev->state != PHY_RUNNING) { | |
5eee3bb7 | 511 | phy_check_downshift(phydev); |
74a992b3 HK |
512 | phydev->state = PHY_RUNNING; |
513 | phy_link_up(phydev); | |
514 | } else if (!phydev->link && phydev->state != PHY_NOLINK) { | |
515 | phydev->state = PHY_NOLINK; | |
516 | phy_link_down(phydev, true); | |
517 | } | |
518 | ||
519 | return 0; | |
520 | } | |
521 | ||
b3df0da8 | 522 | /** |
c45d7150 | 523 | * phy_start_aneg - start auto-negotiation for this PHY device |
b3df0da8 | 524 | * @phydev: the phy_device struct |
e1393456 | 525 | * |
b3df0da8 RD |
526 | * Description: Sanitizes the settings (if we're not autonegotiating |
527 | * them), and then calls the driver's config_aneg function. | |
528 | * If the PHYCONTROL Layer is operating, we change the state to | |
529 | * reflect the beginning of Auto-negotiation or forcing. | |
e1393456 | 530 | */ |
c45d7150 | 531 | int phy_start_aneg(struct phy_device *phydev) |
e1393456 AF |
532 | { |
533 | int err; | |
534 | ||
25149ef9 FF |
535 | if (!phydev->drv) |
536 | return -EIO; | |
537 | ||
35b5f6b1 | 538 | mutex_lock(&phydev->lock); |
e1393456 AF |
539 | |
540 | if (AUTONEG_DISABLE == phydev->autoneg) | |
541 | phy_sanitize_settings(phydev); | |
542 | ||
76299580 | 543 | err = phy_config_aneg(phydev); |
e1393456 AF |
544 | if (err < 0) |
545 | goto out_unlock; | |
546 | ||
2bd229df HK |
547 | if (phy_is_started(phydev)) |
548 | err = phy_check_link_status(phydev); | |
e1393456 | 549 | out_unlock: |
35b5f6b1 | 550 | mutex_unlock(&phydev->lock); |
f555f34f | 551 | |
e1393456 AF |
552 | return err; |
553 | } | |
554 | EXPORT_SYMBOL(phy_start_aneg); | |
555 | ||
2b9672dd HK |
556 | static int phy_poll_aneg_done(struct phy_device *phydev) |
557 | { | |
558 | unsigned int retries = 100; | |
559 | int ret; | |
560 | ||
561 | do { | |
562 | msleep(100); | |
563 | ret = phy_aneg_done(phydev); | |
564 | } while (!ret && --retries); | |
565 | ||
566 | if (!ret) | |
567 | return -ETIMEDOUT; | |
568 | ||
569 | return ret < 0 ? ret : 0; | |
570 | } | |
571 | ||
572 | /** | |
573 | * phy_speed_down - set speed to lowest speed supported by both link partners | |
574 | * @phydev: the phy_device struct | |
575 | * @sync: perform action synchronously | |
576 | * | |
577 | * Description: Typically used to save energy when waiting for a WoL packet | |
578 | * | |
579 | * WARNING: Setting sync to false may cause the system being unable to suspend | |
580 | * in case the PHY generates an interrupt when finishing the autonegotiation. | |
581 | * This interrupt may wake up the system immediately after suspend. | |
582 | * Therefore use sync = false only if you're sure it's safe with the respective | |
583 | * network chip. | |
584 | */ | |
585 | int phy_speed_down(struct phy_device *phydev, bool sync) | |
586 | { | |
65b27995 | 587 | __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp); |
2b9672dd HK |
588 | int ret; |
589 | ||
590 | if (phydev->autoneg != AUTONEG_ENABLE) | |
591 | return 0; | |
592 | ||
65b27995 HK |
593 | linkmode_copy(adv_tmp, phydev->advertising); |
594 | ||
595 | ret = phy_speed_down_core(phydev); | |
596 | if (ret) | |
597 | return ret; | |
2b9672dd | 598 | |
65b27995 HK |
599 | linkmode_copy(phydev->adv_old, adv_tmp); |
600 | ||
601 | if (linkmode_equal(phydev->advertising, adv_tmp)) | |
2b9672dd HK |
602 | return 0; |
603 | ||
604 | ret = phy_config_aneg(phydev); | |
605 | if (ret) | |
606 | return ret; | |
607 | ||
608 | return sync ? phy_poll_aneg_done(phydev) : 0; | |
609 | } | |
610 | EXPORT_SYMBOL_GPL(phy_speed_down); | |
611 | ||
612 | /** | |
613 | * phy_speed_up - (re)set advertised speeds to all supported speeds | |
614 | * @phydev: the phy_device struct | |
615 | * | |
616 | * Description: Used to revert the effect of phy_speed_down | |
617 | */ | |
618 | int phy_speed_up(struct phy_device *phydev) | |
619 | { | |
65b27995 | 620 | __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp); |
2b9672dd HK |
621 | |
622 | if (phydev->autoneg != AUTONEG_ENABLE) | |
623 | return 0; | |
624 | ||
65b27995 HK |
625 | if (linkmode_empty(phydev->adv_old)) |
626 | return 0; | |
2b9672dd | 627 | |
65b27995 HK |
628 | linkmode_copy(adv_tmp, phydev->advertising); |
629 | linkmode_copy(phydev->advertising, phydev->adv_old); | |
630 | linkmode_zero(phydev->adv_old); | |
3c1bcc86 | 631 | |
65b27995 | 632 | if (linkmode_equal(phydev->advertising, adv_tmp)) |
2b9672dd HK |
633 | return 0; |
634 | ||
635 | return phy_config_aneg(phydev); | |
636 | } | |
637 | EXPORT_SYMBOL_GPL(phy_speed_up); | |
638 | ||
b3df0da8 RD |
639 | /** |
640 | * phy_start_machine - start PHY state machine tracking | |
641 | * @phydev: the phy_device struct | |
00db8189 | 642 | * |
b3df0da8 | 643 | * Description: The PHY infrastructure can run a state machine |
00db8189 | 644 | * which tracks whether the PHY is starting up, negotiating, |
fb5e7606 FF |
645 | * etc. This function starts the delayed workqueue which tracks |
646 | * the state of the PHY. If you want to maintain your own state machine, | |
29935aeb | 647 | * do not call this function. |
b3df0da8 | 648 | */ |
29935aeb | 649 | void phy_start_machine(struct phy_device *phydev) |
00db8189 | 650 | { |
6384e483 | 651 | phy_trigger_machine(phydev); |
00db8189 | 652 | } |
5e5758d9 | 653 | EXPORT_SYMBOL_GPL(phy_start_machine); |
00db8189 | 654 | |
b3df0da8 RD |
655 | /** |
656 | * phy_stop_machine - stop the PHY state machine tracking | |
657 | * @phydev: target phy_device struct | |
00db8189 | 658 | * |
fb5e7606 FF |
659 | * Description: Stops the state machine delayed workqueue, sets the |
660 | * state to UP (unless it wasn't up yet). This function must be | |
661 | * called BEFORE phy_detach. | |
00db8189 AF |
662 | */ |
663 | void phy_stop_machine(struct phy_device *phydev) | |
664 | { | |
a390d1f3 | 665 | cancel_delayed_work_sync(&phydev->state_queue); |
00db8189 | 666 | |
35b5f6b1 | 667 | mutex_lock(&phydev->lock); |
a2fc9d7e | 668 | if (phy_is_started(phydev)) |
00db8189 | 669 | phydev->state = PHY_UP; |
35b5f6b1 | 670 | mutex_unlock(&phydev->lock); |
00db8189 AF |
671 | } |
672 | ||
b3df0da8 RD |
673 | /** |
674 | * phy_error - enter HALTED state for this PHY device | |
675 | * @phydev: target phy_device struct | |
00db8189 AF |
676 | * |
677 | * Moves the PHY to the HALTED state in response to a read | |
678 | * or write error, and tells the controller the link is down. | |
679 | * Must not be called from interrupt context, or while the | |
680 | * phydev->lock is held. | |
681 | */ | |
9b9a8bfc | 682 | static void phy_error(struct phy_device *phydev) |
00db8189 | 683 | { |
fa7b28c1 HK |
684 | WARN_ON(1); |
685 | ||
35b5f6b1 | 686 | mutex_lock(&phydev->lock); |
00db8189 | 687 | phydev->state = PHY_HALTED; |
35b5f6b1 | 688 | mutex_unlock(&phydev->lock); |
3c293f4e | 689 | |
9f2959b6 | 690 | phy_trigger_machine(phydev); |
00db8189 AF |
691 | } |
692 | ||
a2c054a8 BM |
693 | /** |
694 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side | |
695 | * @phydev: target phy_device struct | |
696 | */ | |
697 | static int phy_disable_interrupts(struct phy_device *phydev) | |
698 | { | |
699 | int err; | |
700 | ||
701 | /* Disable PHY interrupts */ | |
702 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); | |
703 | if (err) | |
03fe2deb | 704 | return err; |
a2c054a8 BM |
705 | |
706 | /* Clear the interrupt */ | |
03fe2deb | 707 | return phy_clear_interrupt(phydev); |
a2c054a8 BM |
708 | } |
709 | ||
710 | /** | |
34d884e3 HK |
711 | * phy_interrupt - PHY interrupt handler |
712 | * @irq: interrupt line | |
713 | * @phy_dat: phy_device pointer | |
714 | * | |
715 | * Description: Handle PHY interrupt | |
a2c054a8 | 716 | */ |
34d884e3 | 717 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
a2c054a8 | 718 | { |
34d884e3 | 719 | struct phy_device *phydev = phy_dat; |
9010f9de | 720 | struct phy_driver *drv = phydev->drv; |
a2c054a8 | 721 | |
9010f9de HK |
722 | if (drv->handle_interrupt) |
723 | return drv->handle_interrupt(phydev); | |
724 | ||
725 | if (drv->did_interrupt && !drv->did_interrupt(phydev)) | |
34d884e3 | 726 | return IRQ_NONE; |
a2c054a8 | 727 | |
9010f9de HK |
728 | /* reschedule state queue work to run as soon as possible */ |
729 | phy_trigger_machine(phydev); | |
a2c054a8 | 730 | |
249bc974 | 731 | /* did_interrupt() may have cleared the interrupt already */ |
9010f9de HK |
732 | if (!drv->did_interrupt && phy_clear_interrupt(phydev)) { |
733 | phy_error(phydev); | |
734 | return IRQ_NONE; | |
735 | } | |
a2c054a8 | 736 | |
9010f9de | 737 | return IRQ_HANDLED; |
a2c054a8 BM |
738 | } |
739 | ||
b3df0da8 RD |
740 | /** |
741 | * phy_enable_interrupts - Enable the interrupts from the PHY side | |
742 | * @phydev: target phy_device struct | |
743 | */ | |
89ff05ec | 744 | static int phy_enable_interrupts(struct phy_device *phydev) |
00db8189 | 745 | { |
553fe92b | 746 | int err = phy_clear_interrupt(phydev); |
00db8189 | 747 | |
e1393456 AF |
748 | if (err < 0) |
749 | return err; | |
00db8189 | 750 | |
553fe92b | 751 | return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED); |
00db8189 | 752 | } |
00db8189 | 753 | |
b3df0da8 | 754 | /** |
07b09289 | 755 | * phy_request_interrupt - request and enable interrupt for a PHY device |
b3df0da8 | 756 | * @phydev: target phy_device struct |
e1393456 | 757 | * |
07b09289 | 758 | * Description: Request and enable the interrupt for the given PHY. |
b3df0da8 | 759 | * If this fails, then we set irq to PHY_POLL. |
e1393456 AF |
760 | * This should only be called with a valid IRQ number. |
761 | */ | |
434a4315 | 762 | void phy_request_interrupt(struct phy_device *phydev) |
e1393456 | 763 | { |
434a4315 HK |
764 | int err; |
765 | ||
766 | err = request_threaded_irq(phydev->irq, NULL, phy_interrupt, | |
767 | IRQF_ONESHOT | IRQF_SHARED, | |
768 | phydev_name(phydev), phydev); | |
769 | if (err) { | |
770 | phydev_warn(phydev, "Error %d requesting IRQ %d, falling back to polling\n", | |
771 | err, phydev->irq); | |
e1393456 | 772 | phydev->irq = PHY_POLL; |
07b09289 HK |
773 | } else { |
774 | if (phy_enable_interrupts(phydev)) { | |
775 | phydev_warn(phydev, "Can't enable interrupt, falling back to polling\n"); | |
776 | phy_free_interrupt(phydev); | |
777 | phydev->irq = PHY_POLL; | |
778 | } | |
e1393456 | 779 | } |
e1393456 | 780 | } |
434a4315 | 781 | EXPORT_SYMBOL(phy_request_interrupt); |
e1393456 | 782 | |
07b09289 HK |
783 | /** |
784 | * phy_free_interrupt - disable and free interrupt for a PHY device | |
785 | * @phydev: target phy_device struct | |
786 | * | |
787 | * Description: Disable and free the interrupt for the given PHY. | |
788 | * This should only be called with a valid IRQ number. | |
789 | */ | |
790 | void phy_free_interrupt(struct phy_device *phydev) | |
791 | { | |
792 | phy_disable_interrupts(phydev); | |
793 | free_irq(phydev->irq, phydev); | |
794 | } | |
795 | EXPORT_SYMBOL(phy_free_interrupt); | |
796 | ||
b3df0da8 RD |
797 | /** |
798 | * phy_stop - Bring down the PHY link, and stop checking the status | |
799 | * @phydev: target phy_device struct | |
800 | */ | |
e1393456 AF |
801 | void phy_stop(struct phy_device *phydev) |
802 | { | |
a2fc9d7e | 803 | if (!phy_is_started(phydev)) { |
2b3e88ea HK |
804 | WARN(1, "called from state %s\n", |
805 | phy_state_to_str(phydev->state)); | |
2b3e88ea HK |
806 | return; |
807 | } | |
e1393456 | 808 | |
a2fc9d7e HK |
809 | mutex_lock(&phydev->lock); |
810 | ||
298e54fa RK |
811 | if (phydev->sfp_bus) |
812 | sfp_upstream_stop(phydev->sfp_bus); | |
813 | ||
6daf6531 MR |
814 | phydev->state = PHY_HALTED; |
815 | ||
35b5f6b1 | 816 | mutex_unlock(&phydev->lock); |
3c3070d7 | 817 | |
e8cfd9d6 | 818 | phy_state_machine(&phydev->state_queue.work); |
cbfd12b3 | 819 | phy_stop_machine(phydev); |
e8cfd9d6 | 820 | |
2f53e904 | 821 | /* Cannot call flush_scheduled_work() here as desired because |
34d884e3 | 822 | * of rtnl_lock(), but PHY_HALTED shall guarantee irq handler |
3c3070d7 MR |
823 | * will not reenable interrupts. |
824 | */ | |
e1393456 | 825 | } |
2f53e904 | 826 | EXPORT_SYMBOL(phy_stop); |
e1393456 | 827 | |
b3df0da8 RD |
828 | /** |
829 | * phy_start - start or restart a PHY device | |
830 | * @phydev: target phy_device struct | |
e1393456 | 831 | * |
b3df0da8 | 832 | * Description: Indicates the attached device's readiness to |
e1393456 AF |
833 | * handle PHY-related work. Used during startup to start the |
834 | * PHY, and after a call to phy_stop() to resume operation. | |
835 | * Also used to indicate the MDIO bus has cleared an error | |
836 | * condition. | |
837 | */ | |
838 | void phy_start(struct phy_device *phydev) | |
839 | { | |
35b5f6b1 | 840 | mutex_lock(&phydev->lock); |
e1393456 | 841 | |
21796261 HK |
842 | if (phydev->state != PHY_READY && phydev->state != PHY_HALTED) { |
843 | WARN(1, "called from state %s\n", | |
844 | phy_state_to_str(phydev->state)); | |
845 | goto out; | |
846 | } | |
847 | ||
298e54fa RK |
848 | if (phydev->sfp_bus) |
849 | sfp_upstream_start(phydev->sfp_bus); | |
850 | ||
9e573cfc HK |
851 | /* if phy was suspended, bring the physical link up again */ |
852 | __phy_resume(phydev); | |
c15e10e7 | 853 | |
f24098f8 | 854 | phydev->state = PHY_UP; |
9e573cfc HK |
855 | |
856 | phy_start_machine(phydev); | |
21796261 | 857 | out: |
35b5f6b1 | 858 | mutex_unlock(&phydev->lock); |
e1393456 | 859 | } |
e1393456 | 860 | EXPORT_SYMBOL(phy_start); |
67c4f3fa | 861 | |
35b5f6b1 NC |
862 | /** |
863 | * phy_state_machine - Handle the state machine | |
864 | * @work: work_struct that describes the work to be done | |
35b5f6b1 | 865 | */ |
4f9c85a1 | 866 | void phy_state_machine(struct work_struct *work) |
00db8189 | 867 | { |
bf6aede7 | 868 | struct delayed_work *dwork = to_delayed_work(work); |
35b5f6b1 | 869 | struct phy_device *phydev = |
a390d1f3 | 870 | container_of(dwork, struct phy_device, state_queue); |
c15e10e7 | 871 | bool needs_aneg = false, do_suspend = false; |
3e2186e0 | 872 | enum phy_state old_state; |
00db8189 AF |
873 | int err = 0; |
874 | ||
35b5f6b1 | 875 | mutex_lock(&phydev->lock); |
00db8189 | 876 | |
3e2186e0 FF |
877 | old_state = phydev->state; |
878 | ||
e109374f FF |
879 | switch (phydev->state) { |
880 | case PHY_DOWN: | |
e109374f | 881 | case PHY_READY: |
e109374f FF |
882 | break; |
883 | case PHY_UP: | |
6e14a5ee | 884 | needs_aneg = true; |
00db8189 | 885 | |
e109374f FF |
886 | break; |
887 | case PHY_NOLINK: | |
c8e977ba | 888 | case PHY_RUNNING: |
c8e977ba | 889 | err = phy_check_link_status(phydev); |
e109374f | 890 | break; |
e109374f FF |
891 | case PHY_HALTED: |
892 | if (phydev->link) { | |
893 | phydev->link = 0; | |
a81497be | 894 | phy_link_down(phydev, true); |
e109374f | 895 | } |
95fb8bb3 | 896 | do_suspend = true; |
e109374f | 897 | break; |
00db8189 AF |
898 | } |
899 | ||
35b5f6b1 | 900 | mutex_unlock(&phydev->lock); |
00db8189 AF |
901 | |
902 | if (needs_aneg) | |
c45d7150 | 903 | err = phy_start_aneg(phydev); |
6e14a5ee | 904 | else if (do_suspend) |
be9dad1f SH |
905 | phy_suspend(phydev); |
906 | ||
00db8189 AF |
907 | if (err < 0) |
908 | phy_error(phydev); | |
909 | ||
5c5f626b | 910 | if (old_state != phydev->state) { |
6a95befc MG |
911 | phydev_dbg(phydev, "PHY state change %s -> %s\n", |
912 | phy_state_to_str(old_state), | |
913 | phy_state_to_str(phydev->state)); | |
5c5f626b HK |
914 | if (phydev->drv && phydev->drv->link_change_notify) |
915 | phydev->drv->link_change_notify(phydev); | |
916 | } | |
3e2186e0 | 917 | |
d5c3d846 FF |
918 | /* Only re-schedule a PHY state machine change if we are polling the |
919 | * PHY, if PHY_IGNORE_INTERRUPT is set, then we will be moving | |
075ddebc HK |
920 | * between states from phy_mac_interrupt(). |
921 | * | |
922 | * In state PHY_HALTED the PHY gets suspended, so rescheduling the | |
923 | * state machine would be pointless and possibly error prone when | |
924 | * called from phy_disconnect() synchronously. | |
d5c3d846 | 925 | */ |
a2004907 | 926 | mutex_lock(&phydev->lock); |
2b3e88ea | 927 | if (phy_polling_mode(phydev) && phy_is_started(phydev)) |
9f2959b6 | 928 | phy_queue_state_machine(phydev, PHY_STATE_TIME); |
a2004907 | 929 | mutex_unlock(&phydev->lock); |
35b5f6b1 | 930 | } |
a59a4d19 | 931 | |
664fcf12 AL |
932 | /** |
933 | * phy_mac_interrupt - MAC says the link has changed | |
934 | * @phydev: phy_device struct with changed link | |
664fcf12 | 935 | * |
28b2e0d2 HK |
936 | * The MAC layer is able to indicate there has been a change in the PHY link |
937 | * status. Trigger the state machine and work a work queue. | |
664fcf12 | 938 | */ |
28b2e0d2 | 939 | void phy_mac_interrupt(struct phy_device *phydev) |
5ea94e76 | 940 | { |
deccd16f | 941 | /* Trigger a state machine change */ |
d73a2156 | 942 | phy_trigger_machine(phydev); |
5ea94e76 FF |
943 | } |
944 | EXPORT_SYMBOL(phy_mac_interrupt); | |
945 | ||
3c1bcc86 AL |
946 | static void mmd_eee_adv_to_linkmode(unsigned long *advertising, u16 eee_adv) |
947 | { | |
948 | linkmode_zero(advertising); | |
949 | ||
950 | if (eee_adv & MDIO_EEE_100TX) | |
951 | linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, | |
952 | advertising); | |
953 | if (eee_adv & MDIO_EEE_1000T) | |
954 | linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, | |
955 | advertising); | |
956 | if (eee_adv & MDIO_EEE_10GT) | |
957 | linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT, | |
958 | advertising); | |
959 | if (eee_adv & MDIO_EEE_1000KX) | |
960 | linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT, | |
961 | advertising); | |
962 | if (eee_adv & MDIO_EEE_10GKX4) | |
963 | linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT, | |
964 | advertising); | |
965 | if (eee_adv & MDIO_EEE_10GKR) | |
966 | linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT, | |
967 | advertising); | |
968 | } | |
969 | ||
a59a4d19 GC |
970 | /** |
971 | * phy_init_eee - init and check the EEE feature | |
972 | * @phydev: target phy_device struct | |
973 | * @clk_stop_enable: PHY may stop the clock during LPI | |
974 | * | |
975 | * Description: it checks if the Energy-Efficient Ethernet (EEE) | |
976 | * is supported by looking at the MMD registers 3.20 and 7.60/61 | |
977 | * and it programs the MMD register 3.0 setting the "Clock stop enable" | |
978 | * bit if required. | |
979 | */ | |
980 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) | |
981 | { | |
25149ef9 FF |
982 | if (!phydev->drv) |
983 | return -EIO; | |
984 | ||
a59a4d19 | 985 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
a59a4d19 | 986 | */ |
32d75141 | 987 | if (phydev->duplex == DUPLEX_FULL) { |
3c1bcc86 AL |
988 | __ETHTOOL_DECLARE_LINK_MODE_MASK(common); |
989 | __ETHTOOL_DECLARE_LINK_MODE_MASK(lp); | |
990 | __ETHTOOL_DECLARE_LINK_MODE_MASK(adv); | |
a59a4d19 | 991 | int eee_lp, eee_cap, eee_adv; |
4ae6e50c | 992 | int status; |
3c1bcc86 | 993 | u32 cap; |
a59a4d19 GC |
994 | |
995 | /* Read phy status to properly get the right settings */ | |
996 | status = phy_read_status(phydev); | |
997 | if (status) | |
998 | return status; | |
999 | ||
1000 | /* First check if the EEE ability is supported */ | |
a6d99fcd | 1001 | eee_cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); |
7a4cecf7 GC |
1002 | if (eee_cap <= 0) |
1003 | goto eee_exit_err; | |
a59a4d19 | 1004 | |
b32607dd | 1005 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
a59a4d19 | 1006 | if (!cap) |
7a4cecf7 | 1007 | goto eee_exit_err; |
a59a4d19 GC |
1008 | |
1009 | /* Check which link settings negotiated and verify it in | |
1010 | * the EEE advertising registers. | |
1011 | */ | |
a6d99fcd | 1012 | eee_lp = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE); |
7a4cecf7 GC |
1013 | if (eee_lp <= 0) |
1014 | goto eee_exit_err; | |
a59a4d19 | 1015 | |
a6d99fcd | 1016 | eee_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
7a4cecf7 GC |
1017 | if (eee_adv <= 0) |
1018 | goto eee_exit_err; | |
a59a4d19 | 1019 | |
3c1bcc86 AL |
1020 | mmd_eee_adv_to_linkmode(adv, eee_adv); |
1021 | mmd_eee_adv_to_linkmode(lp, eee_lp); | |
1022 | linkmode_and(common, adv, lp); | |
1023 | ||
1024 | if (!phy_check_valid(phydev->speed, phydev->duplex, common)) | |
7a4cecf7 | 1025 | goto eee_exit_err; |
a59a4d19 | 1026 | |
b52c018d | 1027 | if (clk_stop_enable) |
a59a4d19 GC |
1028 | /* Configure the PHY to stop receiving xMII |
1029 | * clock while it is signaling LPI. | |
1030 | */ | |
b52c018d HK |
1031 | phy_set_bits_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, |
1032 | MDIO_PCS_CTRL1_CLKSTOP_EN); | |
a59a4d19 | 1033 | |
e62a768f | 1034 | return 0; /* EEE supported */ |
a59a4d19 | 1035 | } |
7a4cecf7 | 1036 | eee_exit_err: |
e62a768f | 1037 | return -EPROTONOSUPPORT; |
a59a4d19 GC |
1038 | } |
1039 | EXPORT_SYMBOL(phy_init_eee); | |
1040 | ||
1041 | /** | |
1042 | * phy_get_eee_err - report the EEE wake error count | |
1043 | * @phydev: target phy_device struct | |
1044 | * | |
1045 | * Description: it is to report the number of time where the PHY | |
1046 | * failed to complete its normal wake sequence. | |
1047 | */ | |
1048 | int phy_get_eee_err(struct phy_device *phydev) | |
1049 | { | |
25149ef9 FF |
1050 | if (!phydev->drv) |
1051 | return -EIO; | |
1052 | ||
a6d99fcd | 1053 | return phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR); |
a59a4d19 GC |
1054 | } |
1055 | EXPORT_SYMBOL(phy_get_eee_err); | |
1056 | ||
1057 | /** | |
1058 | * phy_ethtool_get_eee - get EEE supported and status | |
1059 | * @phydev: target phy_device struct | |
1060 | * @data: ethtool_eee data | |
1061 | * | |
1062 | * Description: it reportes the Supported/Advertisement/LP Advertisement | |
1063 | * capabilities. | |
1064 | */ | |
1065 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1066 | { | |
1067 | int val; | |
1068 | ||
25149ef9 FF |
1069 | if (!phydev->drv) |
1070 | return -EIO; | |
1071 | ||
a59a4d19 | 1072 | /* Get Supported EEE */ |
a6d99fcd | 1073 | val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); |
a59a4d19 GC |
1074 | if (val < 0) |
1075 | return val; | |
b32607dd | 1076 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
a59a4d19 GC |
1077 | |
1078 | /* Get advertisement EEE */ | |
a6d99fcd | 1079 | val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
a59a4d19 GC |
1080 | if (val < 0) |
1081 | return val; | |
b32607dd | 1082 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
d1420bb9 | 1083 | data->eee_enabled = !!data->advertised; |
a59a4d19 GC |
1084 | |
1085 | /* Get LP advertisement EEE */ | |
a6d99fcd | 1086 | val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE); |
a59a4d19 GC |
1087 | if (val < 0) |
1088 | return val; | |
b32607dd | 1089 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
a59a4d19 | 1090 | |
d1420bb9 HK |
1091 | data->eee_active = !!(data->advertised & data->lp_advertised); |
1092 | ||
a59a4d19 GC |
1093 | return 0; |
1094 | } | |
1095 | EXPORT_SYMBOL(phy_ethtool_get_eee); | |
1096 | ||
1097 | /** | |
1098 | * phy_ethtool_set_eee - set EEE supported and status | |
1099 | * @phydev: target phy_device struct | |
1100 | * @data: ethtool_eee data | |
1101 | * | |
1102 | * Description: it is to program the Advertisement EEE register. | |
1103 | */ | |
1104 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) | |
1105 | { | |
d1420bb9 | 1106 | int cap, old_adv, adv = 0, ret; |
a59a4d19 | 1107 | |
25149ef9 FF |
1108 | if (!phydev->drv) |
1109 | return -EIO; | |
1110 | ||
83ea067f RK |
1111 | /* Get Supported EEE */ |
1112 | cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); | |
1113 | if (cap < 0) | |
1114 | return cap; | |
d853d145 | 1115 | |
f75abeb8 RK |
1116 | old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
1117 | if (old_adv < 0) | |
1118 | return old_adv; | |
1119 | ||
d1420bb9 HK |
1120 | if (data->eee_enabled) { |
1121 | adv = !data->advertised ? cap : | |
1122 | ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap; | |
1123 | /* Mask prohibited EEE modes */ | |
1124 | adv &= ~phydev->eee_broken_modes; | |
1125 | } | |
83ea067f | 1126 | |
f75abeb8 RK |
1127 | if (old_adv != adv) { |
1128 | ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv); | |
1129 | if (ret < 0) | |
1130 | return ret; | |
1131 | ||
1132 | /* Restart autonegotiation so the new modes get sent to the | |
1133 | * link partner. | |
1134 | */ | |
9de5d235 HK |
1135 | if (phydev->autoneg == AUTONEG_ENABLE) { |
1136 | ret = phy_restart_aneg(phydev); | |
1137 | if (ret < 0) | |
1138 | return ret; | |
1139 | } | |
f75abeb8 RK |
1140 | } |
1141 | ||
1142 | return 0; | |
a59a4d19 GC |
1143 | } |
1144 | EXPORT_SYMBOL(phy_ethtool_set_eee); | |
42e836eb MS |
1145 | |
1146 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1147 | { | |
25149ef9 | 1148 | if (phydev->drv && phydev->drv->set_wol) |
42e836eb MS |
1149 | return phydev->drv->set_wol(phydev, wol); |
1150 | ||
1151 | return -EOPNOTSUPP; | |
1152 | } | |
1153 | EXPORT_SYMBOL(phy_ethtool_set_wol); | |
1154 | ||
1155 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) | |
1156 | { | |
25149ef9 | 1157 | if (phydev->drv && phydev->drv->get_wol) |
42e836eb MS |
1158 | phydev->drv->get_wol(phydev, wol); |
1159 | } | |
1160 | EXPORT_SYMBOL(phy_ethtool_get_wol); | |
9d9a77ce PR |
1161 | |
1162 | int phy_ethtool_get_link_ksettings(struct net_device *ndev, | |
1163 | struct ethtool_link_ksettings *cmd) | |
1164 | { | |
1165 | struct phy_device *phydev = ndev->phydev; | |
1166 | ||
1167 | if (!phydev) | |
1168 | return -ENODEV; | |
1169 | ||
5514174f | 1170 | phy_ethtool_ksettings_get(phydev, cmd); |
1171 | ||
1172 | return 0; | |
9d9a77ce PR |
1173 | } |
1174 | EXPORT_SYMBOL(phy_ethtool_get_link_ksettings); | |
1175 | ||
1176 | int phy_ethtool_set_link_ksettings(struct net_device *ndev, | |
1177 | const struct ethtool_link_ksettings *cmd) | |
1178 | { | |
1179 | struct phy_device *phydev = ndev->phydev; | |
1180 | ||
1181 | if (!phydev) | |
1182 | return -ENODEV; | |
1183 | ||
1184 | return phy_ethtool_ksettings_set(phydev, cmd); | |
1185 | } | |
1186 | EXPORT_SYMBOL(phy_ethtool_set_link_ksettings); | |
e86a8987 FF |
1187 | |
1188 | int phy_ethtool_nway_reset(struct net_device *ndev) | |
1189 | { | |
1190 | struct phy_device *phydev = ndev->phydev; | |
1191 | ||
1192 | if (!phydev) | |
1193 | return -ENODEV; | |
1194 | ||
25149ef9 FF |
1195 | if (!phydev->drv) |
1196 | return -EIO; | |
1197 | ||
002ba705 | 1198 | return phy_restart_aneg(phydev); |
e86a8987 FF |
1199 | } |
1200 | EXPORT_SYMBOL(phy_ethtool_nway_reset); |