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Andrew Lunna2443fd2019-01-21 19:05:50 +01001// SPDX-License-Identifier: GPL-2.0+
Sergei Shtylyov2f53e902014-01-05 03:17:06 +03002/* Framework for configuring and reading PHY devices
Andy Fleming00db8182005-07-30 19:31:23 -04003 * Based on code in sungem_phy.c and gianfar_phy.c
4 *
5 * Author: Andy Fleming
6 *
7 * Copyright (c) 2004 Freescale Semiconductor, Inc.
Maciej W. Rozycki0ac49522007-09-28 22:42:14 -07008 * Copyright (c) 2006, 2007 Maciej W. Rozycki
Andy Fleming00db8182005-07-30 19:31:23 -04009 */
Joe Perches8d242482012-06-09 07:49:07 +000010
Andy Fleming00db8182005-07-30 19:31:23 -040011#include <linux/kernel.h>
Andy Fleming00db8182005-07-30 19:31:23 -040012#include <linux/string.h>
13#include <linux/errno.h>
14#include <linux/unistd.h>
Andy Fleming00db8182005-07-30 19:31:23 -040015#include <linux/interrupt.h>
Andy Fleming00db8182005-07-30 19:31:23 -040016#include <linux/delay.h>
17#include <linux/netdevice.h>
18#include <linux/etherdevice.h>
19#include <linux/skbuff.h>
Andy Fleming00db8182005-07-30 19:31:23 -040020#include <linux/mm.h>
21#include <linux/module.h>
Andy Fleming00db8182005-07-30 19:31:23 -040022#include <linux/mii.h>
23#include <linux/ethtool.h>
24#include <linux/phy.h>
Geert Uytterhoevend6f8cfa2017-01-25 11:39:49 +010025#include <linux/phy_led_triggers.h>
Maciej W. Rozycki3c3070d72006-10-03 16:18:35 +010026#include <linux/workqueue.h>
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +000027#include <linux/mdio.h>
Sergei Shtylyov2f53e902014-01-05 03:17:06 +030028#include <linux/io.h>
29#include <linux/uaccess.h>
Arun Sharma600634972011-07-26 16:09:06 -070030#include <linux/atomic.h>
Sergei Shtylyov2f53e902014-01-05 03:17:06 +030031
Heiner Kallweit97b33bd2019-05-30 15:11:06 +020032#define PHY_STATE_TIME HZ
33
Florian Fainelli3e2186e2015-05-16 10:17:56 -070034#define PHY_STATE_STR(_state) \
35 case PHY_##_state: \
36 return __stringify(_state); \
37
38static const char *phy_state_to_str(enum phy_state st)
39{
40 switch (st) {
41 PHY_STATE_STR(DOWN)
Florian Fainelli3e2186e2015-05-16 10:17:56 -070042 PHY_STATE_STR(READY)
Florian Fainelli3e2186e2015-05-16 10:17:56 -070043 PHY_STATE_STR(UP)
Florian Fainelli3e2186e2015-05-16 10:17:56 -070044 PHY_STATE_STR(RUNNING)
45 PHY_STATE_STR(NOLINK)
Florian Fainelli3e2186e2015-05-16 10:17:56 -070046 PHY_STATE_STR(HALTED)
Florian Fainelli3e2186e2015-05-16 10:17:56 -070047 }
48
49 return NULL;
50}
51
Heiner Kallweit74a992b2018-11-07 20:45:58 +010052static void phy_link_up(struct phy_device *phydev)
53{
54 phydev->phy_link_change(phydev, true, true);
55 phy_led_trigger_change_speed(phydev);
56}
57
58static void phy_link_down(struct phy_device *phydev, bool do_carrier)
59{
60 phydev->phy_link_change(phydev, false, do_carrier);
61 phy_led_trigger_change_speed(phydev);
62}
Florian Fainelli3e2186e2015-05-16 10:17:56 -070063
Heiner Kallweit23bfaa52019-05-05 19:03:51 +020064static const char *phy_pause_str(struct phy_device *phydev)
65{
66 bool local_pause, local_asym_pause;
67
68 if (phydev->autoneg == AUTONEG_DISABLE)
69 goto no_pause;
70
71 local_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
72 phydev->advertising);
73 local_asym_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
74 phydev->advertising);
75
76 if (local_pause && phydev->pause)
77 return "rx/tx";
78
79 if (local_asym_pause && phydev->asym_pause) {
80 if (local_pause)
81 return "rx";
82 if (phydev->pause)
83 return "tx";
84 }
85
86no_pause:
87 return "off";
88}
89
Randy Dunlapb3df0da2007-03-06 02:41:48 -080090/**
91 * phy_print_status - Convenience function to print out the current phy status
92 * @phydev: the phy_device struct
Andy Fleminge1393452005-08-24 18:46:21 -050093 */
94void phy_print_status(struct phy_device *phydev)
95{
Sergei Shtylyov2f53e902014-01-05 03:17:06 +030096 if (phydev->link) {
Florian Fainellidf40cc882014-02-11 17:27:34 -080097 netdev_info(phydev->attached_dev,
Florian Fainelli766d1d32014-02-11 17:27:35 -080098 "Link is Up - %s/%s - flow control %s\n",
99 phy_speed_to_str(phydev->speed),
Russell Kingda4625a2017-07-25 15:02:42 +0100100 phy_duplex_to_str(phydev->duplex),
Heiner Kallweit23bfaa52019-05-05 19:03:51 +0200101 phy_pause_str(phydev));
Sergei Shtylyov2f53e902014-01-05 03:17:06 +0300102 } else {
Florian Fainelli43b63292014-02-11 17:27:33 -0800103 netdev_info(phydev->attached_dev, "Link is Down\n");
Sergei Shtylyov2f53e902014-01-05 03:17:06 +0300104 }
Andy Fleminge1393452005-08-24 18:46:21 -0500105}
106EXPORT_SYMBOL(phy_print_status);
Andy Fleming00db8182005-07-30 19:31:23 -0400107
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800108/**
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800109 * phy_clear_interrupt - Ack the phy device's interrupt
110 * @phydev: the phy_device struct
111 *
112 * If the @phydev driver has an ack_interrupt function, call it to
113 * ack and clear the phy device's interrupt.
114 *
Florian Fainelliad033502014-02-11 17:27:38 -0800115 * Returns 0 on success or < 0 on error.
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800116 */
stephen hemminger89ff05e2010-10-21 08:37:41 +0000117static int phy_clear_interrupt(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400118{
Andy Fleming00db8182005-07-30 19:31:23 -0400119 if (phydev->drv->ack_interrupt)
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300120 return phydev->drv->ack_interrupt(phydev);
Andy Fleming00db8182005-07-30 19:31:23 -0400121
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300122 return 0;
Andy Fleming00db8182005-07-30 19:31:23 -0400123}
124
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800125/**
126 * phy_config_interrupt - configure the PHY device for the requested interrupts
127 * @phydev: the phy_device struct
128 * @interrupts: interrupt flags to configure for this @phydev
129 *
Florian Fainelliad033502014-02-11 17:27:38 -0800130 * Returns 0 on success or < 0 on error.
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800131 */
Heiner Kallweit695bce82018-11-09 18:35:52 +0100132static int phy_config_interrupt(struct phy_device *phydev, bool interrupts)
Andy Fleming00db8182005-07-30 19:31:23 -0400133{
Heiner Kallweit695bce82018-11-09 18:35:52 +0100134 phydev->interrupts = interrupts ? 1 : 0;
Andy Fleming00db8182005-07-30 19:31:23 -0400135 if (phydev->drv->config_intr)
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300136 return phydev->drv->config_intr(phydev);
Andy Fleming00db8182005-07-30 19:31:23 -0400137
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300138 return 0;
Andy Fleming00db8182005-07-30 19:31:23 -0400139}
140
Russell King002ba7052017-06-05 12:23:00 +0100141/**
142 * phy_restart_aneg - restart auto-negotiation
143 * @phydev: target phy_device struct
144 *
145 * Restart the autonegotiation on @phydev. Returns >= 0 on success or
146 * negative errno on error.
147 */
148int phy_restart_aneg(struct phy_device *phydev)
149{
150 int ret;
151
152 if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0)))
153 ret = genphy_c45_restart_aneg(phydev);
154 else
155 ret = genphy_restart_aneg(phydev);
156
157 return ret;
158}
159EXPORT_SYMBOL_GPL(phy_restart_aneg);
Andy Fleming00db8182005-07-30 19:31:23 -0400160
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800161/**
162 * phy_aneg_done - return auto-negotiation status
163 * @phydev: target phy_device struct
Andy Fleming00db8182005-07-30 19:31:23 -0400164 *
Florian Fainelli76a423a2014-02-11 17:27:37 -0800165 * Description: Return the auto-negotiation status from this @phydev
166 * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation
167 * is still pending.
Andy Fleming00db8182005-07-30 19:31:23 -0400168 */
Lendacky, Thomas372788f92016-11-10 17:10:46 -0600169int phy_aneg_done(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400170{
Florian Fainelli65f27672017-02-23 14:22:19 -0800171 if (phydev->drv && phydev->drv->aneg_done)
Florian Fainelli76a423a2014-02-11 17:27:37 -0800172 return phydev->drv->aneg_done(phydev);
Heiner Kallweitd7bed822019-03-02 17:10:00 +0100173 else if (phydev->is_c45)
174 return genphy_c45_aneg_done(phydev);
175 else
176 return genphy_aneg_done(phydev);
Andy Fleming00db8182005-07-30 19:31:23 -0400177}
Lendacky, Thomas372788f92016-11-10 17:10:46 -0600178EXPORT_SYMBOL(phy_aneg_done);
Andy Fleming00db8182005-07-30 19:31:23 -0400179
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800180/**
Russell Kingd0613032017-04-13 16:49:15 +0100181 * phy_find_valid - find a PHY setting that matches the requested parameters
182 * @speed: desired speed
183 * @duplex: desired duplex
184 * @supported: mask of supported link modes
Andy Fleming00db8182005-07-30 19:31:23 -0400185 *
Russell Kingd0613032017-04-13 16:49:15 +0100186 * Locate a supported phy setting that is, in priority order:
187 * - an exact match for the specified speed and duplex mode
188 * - a match for the specified speed, or slower speed
189 * - the slowest supported speed
190 * Returns the matched phy_setting entry, or %NULL if no supported phy
191 * settings were found.
Andy Fleming00db8182005-07-30 19:31:23 -0400192 */
Russell Kingd0613032017-04-13 16:49:15 +0100193static const struct phy_setting *
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100194phy_find_valid(int speed, int duplex, unsigned long *supported)
Andy Fleming00db8182005-07-30 19:31:23 -0400195{
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100196 return phy_lookup_setting(speed, duplex, supported, false);
Andy Fleming00db8182005-07-30 19:31:23 -0400197}
198
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800199/**
Zach Brown1f9127c2016-10-17 10:49:54 -0500200 * phy_supported_speeds - return all speeds currently supported by a phy device
201 * @phy: The phy device to return supported speeds of.
202 * @speeds: buffer to store supported speeds in.
203 * @size: size of speeds buffer.
204 *
205 * Description: Returns the number of supported speeds, and fills the speeds
206 * buffer with the supported speeds. If speeds buffer is too small to contain
207 * all currently supported speeds, will return as many speeds as can fit.
208 */
209unsigned int phy_supported_speeds(struct phy_device *phy,
210 unsigned int *speeds,
211 unsigned int size)
212{
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100213 return phy_speeds(speeds, size, phy->supported);
Zach Brown1f9127c2016-10-17 10:49:54 -0500214}
215
216/**
Guenter Roeck54da5a82015-02-17 09:36:22 -0800217 * phy_check_valid - check if there is a valid PHY setting which matches
218 * speed, duplex, and feature mask
219 * @speed: speed to match
220 * @duplex: duplex to match
221 * @features: A mask of the valid settings
222 *
223 * Description: Returns true if there is a valid setting, false otherwise.
224 */
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100225static inline bool phy_check_valid(int speed, int duplex,
226 unsigned long *features)
Guenter Roeck54da5a82015-02-17 09:36:22 -0800227{
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100228 return !!phy_lookup_setting(speed, duplex, features, true);
Guenter Roeck54da5a82015-02-17 09:36:22 -0800229}
230
231/**
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800232 * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex
233 * @phydev: the target phy_device struct
Andy Fleming00db8182005-07-30 19:31:23 -0400234 *
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800235 * Description: Make sure the PHY is set to supported speeds and
Andy Fleming00db8182005-07-30 19:31:23 -0400236 * duplexes. Drop down by one in this order: 1000/FULL,
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800237 * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF.
Andy Fleming00db8182005-07-30 19:31:23 -0400238 */
stephen hemminger89ff05e2010-10-21 08:37:41 +0000239static void phy_sanitize_settings(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400240{
Russell Kingd0613032017-04-13 16:49:15 +0100241 const struct phy_setting *setting;
Andy Fleming00db8182005-07-30 19:31:23 -0400242
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100243 setting = phy_find_valid(phydev->speed, phydev->duplex,
244 phydev->supported);
Russell Kingd0613032017-04-13 16:49:15 +0100245 if (setting) {
246 phydev->speed = setting->speed;
247 phydev->duplex = setting->duplex;
248 } else {
249 /* We failed to find anything (no supported speeds?) */
250 phydev->speed = SPEED_UNKNOWN;
251 phydev->duplex = DUPLEX_UNKNOWN;
252 }
Andy Fleming00db8182005-07-30 19:31:23 -0400253}
Andy Fleming00db8182005-07-30 19:31:23 -0400254
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800255/**
256 * phy_ethtool_sset - generic ethtool sset function, handles all the details
257 * @phydev: target phy_device struct
258 * @cmd: ethtool_cmd
Andy Fleming00db8182005-07-30 19:31:23 -0400259 *
260 * A few notes about parameter checking:
Mauro Carvalho Chehabd6519832017-05-12 09:35:46 -0300261 *
Andy Fleming00db8182005-07-30 19:31:23 -0400262 * - We don't set port or transceiver, so we don't care what they
263 * were set to.
264 * - phy_start_aneg() will make sure forced settings are sane, and
265 * choose the next best ones from the ones selected, so we don't
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800266 * care if ethtool tries to give us bad values.
Andy Fleming00db8182005-07-30 19:31:23 -0400267 */
268int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd)
269{
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100270 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
David Decotigny25db0332011-04-27 18:32:39 +0000271 u32 speed = ethtool_cmd_speed(cmd);
272
Andrew Lunne5a03bf2016-01-06 20:11:16 +0100273 if (cmd->phy_address != phydev->mdio.addr)
Andy Fleming00db8182005-07-30 19:31:23 -0400274 return -EINVAL;
275
Sergei Shtylyov2f53e902014-01-05 03:17:06 +0300276 /* We make sure that we don't pass unsupported values in to the PHY */
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100277 ethtool_convert_legacy_u32_to_link_mode(advertising, cmd->advertising);
278 linkmode_and(advertising, advertising, phydev->supported);
Andy Fleming00db8182005-07-30 19:31:23 -0400279
280 /* Verify the settings we care about. */
281 if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE)
282 return -EINVAL;
283
284 if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0)
285 return -EINVAL;
286
Joe Perches8e95a202009-12-03 07:58:21 +0000287 if (cmd->autoneg == AUTONEG_DISABLE &&
David Decotigny25db0332011-04-27 18:32:39 +0000288 ((speed != SPEED_1000 &&
289 speed != SPEED_100 &&
290 speed != SPEED_10) ||
Joe Perches8e95a202009-12-03 07:58:21 +0000291 (cmd->duplex != DUPLEX_HALF &&
292 cmd->duplex != DUPLEX_FULL)))
Andy Fleming00db8182005-07-30 19:31:23 -0400293 return -EINVAL;
294
295 phydev->autoneg = cmd->autoneg;
296
David Decotigny25db0332011-04-27 18:32:39 +0000297 phydev->speed = speed;
Andy Fleming00db8182005-07-30 19:31:23 -0400298
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100299 linkmode_copy(phydev->advertising, advertising);
Andy Fleming00db8182005-07-30 19:31:23 -0400300
Fuqian Huangccf355e2019-07-08 20:34:17 +0800301 linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
302 phydev->advertising, AUTONEG_ENABLE == cmd->autoneg);
Andy Fleming00db8182005-07-30 19:31:23 -0400303
304 phydev->duplex = cmd->duplex;
305
Raju Lakkaraju1004ee62016-11-29 15:16:47 +0530306 phydev->mdix_ctrl = cmd->eth_tp_mdix_ctrl;
David Thomson634ec362015-07-10 13:56:54 +1200307
Andy Fleming00db8182005-07-30 19:31:23 -0400308 /* Restart the PHY */
309 phy_start_aneg(phydev);
310
311 return 0;
312}
Kumar Gala9f6d55d2007-01-20 16:38:26 -0600313EXPORT_SYMBOL(phy_ethtool_sset);
Andy Fleming00db8182005-07-30 19:31:23 -0400314
Philippe Reynes2d551732016-04-15 00:35:00 +0200315int phy_ethtool_ksettings_set(struct phy_device *phydev,
316 const struct ethtool_link_ksettings *cmd)
317{
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100318 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
Philippe Reynes2d551732016-04-15 00:35:00 +0200319 u8 autoneg = cmd->base.autoneg;
320 u8 duplex = cmd->base.duplex;
321 u32 speed = cmd->base.speed;
Philippe Reynes2d551732016-04-15 00:35:00 +0200322
323 if (cmd->base.phy_address != phydev->mdio.addr)
324 return -EINVAL;
325
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100326 linkmode_copy(advertising, cmd->link_modes.advertising);
Philippe Reynes2d551732016-04-15 00:35:00 +0200327
328 /* We make sure that we don't pass unsupported values in to the PHY */
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100329 linkmode_and(advertising, advertising, phydev->supported);
Philippe Reynes2d551732016-04-15 00:35:00 +0200330
331 /* Verify the settings we care about. */
332 if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE)
333 return -EINVAL;
334
Colin Ian King3e536cf2018-11-12 23:45:56 +0000335 if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising))
Philippe Reynes2d551732016-04-15 00:35:00 +0200336 return -EINVAL;
337
338 if (autoneg == AUTONEG_DISABLE &&
339 ((speed != SPEED_1000 &&
340 speed != SPEED_100 &&
341 speed != SPEED_10) ||
342 (duplex != DUPLEX_HALF &&
343 duplex != DUPLEX_FULL)))
344 return -EINVAL;
345
346 phydev->autoneg = autoneg;
347
348 phydev->speed = speed;
349
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100350 linkmode_copy(phydev->advertising, advertising);
Philippe Reynes2d551732016-04-15 00:35:00 +0200351
Fuqian Huangccf355e2019-07-08 20:34:17 +0800352 linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
353 phydev->advertising, autoneg == AUTONEG_ENABLE);
Philippe Reynes2d551732016-04-15 00:35:00 +0200354
355 phydev->duplex = duplex;
356
Raju Lakkaraju1004ee62016-11-29 15:16:47 +0530357 phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl;
Philippe Reynes2d551732016-04-15 00:35:00 +0200358
359 /* Restart the PHY */
360 phy_start_aneg(phydev);
361
362 return 0;
363}
364EXPORT_SYMBOL(phy_ethtool_ksettings_set);
365
yuval.shaia@oracle.com55141742017-06-13 10:09:46 +0300366void phy_ethtool_ksettings_get(struct phy_device *phydev,
367 struct ethtool_link_ksettings *cmd)
Philippe Reynes2d551732016-04-15 00:35:00 +0200368{
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100369 linkmode_copy(cmd->link_modes.supported, phydev->supported);
370 linkmode_copy(cmd->link_modes.advertising, phydev->advertising);
Andrew Lunnc0ec3c22018-11-10 23:43:34 +0100371 linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising);
Philippe Reynes2d551732016-04-15 00:35:00 +0200372
373 cmd->base.speed = phydev->speed;
374 cmd->base.duplex = phydev->duplex;
375 if (phydev->interface == PHY_INTERFACE_MODE_MOCA)
376 cmd->base.port = PORT_BNC;
377 else
378 cmd->base.port = PORT_MII;
Florian Fainelliceb62812017-09-20 15:52:14 -0700379 cmd->base.transceiver = phy_is_internal(phydev) ?
380 XCVR_INTERNAL : XCVR_EXTERNAL;
Philippe Reynes2d551732016-04-15 00:35:00 +0200381 cmd->base.phy_address = phydev->mdio.addr;
382 cmd->base.autoneg = phydev->autoneg;
Raju Lakkaraju1004ee62016-11-29 15:16:47 +0530383 cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl;
384 cmd->base.eth_tp_mdix = phydev->mdix;
Philippe Reynes2d551732016-04-15 00:35:00 +0200385}
386EXPORT_SYMBOL(phy_ethtool_ksettings_get);
387
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800388/**
389 * phy_mii_ioctl - generic PHY MII ioctl interface
390 * @phydev: the phy_device struct
Randy Dunlap00c7d922010-08-09 13:41:59 +0000391 * @ifr: &struct ifreq for socket ioctl's
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800392 * @cmd: ioctl cmd to execute
393 *
394 * Note that this function is currently incompatible with the
Andy Fleming00db8182005-07-30 19:31:23 -0400395 * PHYCONTROL layer. It changes registers without regard to
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800396 * current state. Use at own risk.
Andy Fleming00db8182005-07-30 19:31:23 -0400397 */
Sergei Shtylyov2f53e902014-01-05 03:17:06 +0300398int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd)
Andy Fleming00db8182005-07-30 19:31:23 -0400399{
Richard Cochran28b04112010-07-17 08:48:55 +0000400 struct mii_ioctl_data *mii_data = if_mii(ifr);
Andy Fleming00db8182005-07-30 19:31:23 -0400401 u16 val = mii_data->val_in;
Brian Hill79ce0472014-11-11 13:39:39 -0700402 bool change_autoneg = false;
Russell Kingcdea04c2019-05-28 10:57:29 +0100403 int prtad, devad;
Andy Fleming00db8182005-07-30 19:31:23 -0400404
405 switch (cmd) {
406 case SIOCGMIIPHY:
Andrew Lunne5a03bf2016-01-06 20:11:16 +0100407 mii_data->phy_id = phydev->mdio.addr;
Lennert Buytenhekc6d6a512008-09-18 03:06:52 +0000408 /* fall through */
409
Andy Fleming00db8182005-07-30 19:31:23 -0400410 case SIOCGMIIREG:
Russell Kingcdea04c2019-05-28 10:57:29 +0100411 if (mdio_phy_id_is_c45(mii_data->phy_id)) {
412 prtad = mdio_phy_id_prtad(mii_data->phy_id);
413 devad = mdio_phy_id_devad(mii_data->phy_id);
414 devad = MII_ADDR_C45 | devad << 16 | mii_data->reg_num;
415 } else {
416 prtad = mii_data->phy_id;
417 devad = mii_data->reg_num;
418 }
419 mii_data->val_out = mdiobus_read(phydev->mdio.bus, prtad,
420 devad);
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300421 return 0;
Andy Fleming00db8182005-07-30 19:31:23 -0400422
423 case SIOCSMIIREG:
Russell Kingcdea04c2019-05-28 10:57:29 +0100424 if (mdio_phy_id_is_c45(mii_data->phy_id)) {
425 prtad = mdio_phy_id_prtad(mii_data->phy_id);
426 devad = mdio_phy_id_devad(mii_data->phy_id);
427 devad = MII_ADDR_C45 | devad << 16 | mii_data->reg_num;
428 } else {
429 prtad = mii_data->phy_id;
430 devad = mii_data->reg_num;
431 }
432 if (prtad == phydev->mdio.addr) {
433 switch (devad) {
Andy Fleming00db8182005-07-30 19:31:23 -0400434 case MII_BMCR:
Brian Hill79ce0472014-11-11 13:39:39 -0700435 if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) {
436 if (phydev->autoneg == AUTONEG_ENABLE)
437 change_autoneg = true;
Andy Fleming00db8182005-07-30 19:31:23 -0400438 phydev->autoneg = AUTONEG_DISABLE;
Brian Hill79ce0472014-11-11 13:39:39 -0700439 if (val & BMCR_FULLDPLX)
440 phydev->duplex = DUPLEX_FULL;
441 else
442 phydev->duplex = DUPLEX_HALF;
443 if (val & BMCR_SPEED1000)
444 phydev->speed = SPEED_1000;
445 else if (val & BMCR_SPEED100)
446 phydev->speed = SPEED_100;
447 else phydev->speed = SPEED_10;
448 }
449 else {
450 if (phydev->autoneg == AUTONEG_DISABLE)
451 change_autoneg = true;
Andy Fleming00db8182005-07-30 19:31:23 -0400452 phydev->autoneg = AUTONEG_ENABLE;
Brian Hill79ce0472014-11-11 13:39:39 -0700453 }
Andy Fleming00db8182005-07-30 19:31:23 -0400454 break;
455 case MII_ADVERTISE:
Andrew Lunn9db299c2018-12-05 21:49:45 +0100456 mii_adv_mod_linkmode_adv_t(phydev->advertising,
457 val);
Brian Hill79ce0472014-11-11 13:39:39 -0700458 change_autoneg = true;
Andy Fleming00db8182005-07-30 19:31:23 -0400459 break;
460 default:
461 /* do nothing */
462 break;
463 }
464 }
465
Russell Kingcdea04c2019-05-28 10:57:29 +0100466 mdiobus_write(phydev->mdio.bus, prtad, devad, val);
Peter Korsgaardaf1dc132011-03-10 06:52:13 +0000467
Russell Kingcdea04c2019-05-28 10:57:29 +0100468 if (prtad == phydev->mdio.addr &&
469 devad == MII_BMCR &&
Florian Fainelli2613f952013-12-06 13:01:31 -0800470 val & BMCR_RESET)
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300471 return phy_init_hw(phydev);
Brian Hill79ce0472014-11-11 13:39:39 -0700472
473 if (change_autoneg)
474 return phy_start_aneg(phydev);
475
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300476 return 0;
David Woodhousedda93b482007-11-28 19:56:34 +0000477
Richard Cochranc1f19b52010-07-17 08:49:36 +0000478 case SIOCSHWTSTAMP:
Florian Fainelli25149ef2017-02-17 16:07:34 -0800479 if (phydev->drv && phydev->drv->hwtstamp)
Richard Cochranc1f19b52010-07-17 08:49:36 +0000480 return phydev->drv->hwtstamp(phydev, ifr);
481 /* fall through */
482
David Woodhousedda93b482007-11-28 19:56:34 +0000483 default:
Lennert Buytenhekc6d6a512008-09-18 03:06:52 +0000484 return -EOPNOTSUPP;
Andy Fleming00db8182005-07-30 19:31:23 -0400485 }
Andy Fleming00db8182005-07-30 19:31:23 -0400486}
Domen Puncer680e9fe2007-09-17 22:21:40 +0200487EXPORT_SYMBOL(phy_mii_ioctl);
Andy Fleming00db8182005-07-30 19:31:23 -0400488
Heiner Kallweit97b33bd2019-05-30 15:11:06 +0200489void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies)
Heiner Kallweita3320bc2018-11-07 08:15:58 +0100490{
491 mod_delayed_work(system_power_efficient_wq, &phydev->state_queue,
Heiner Kallweit97b33bd2019-05-30 15:11:06 +0200492 jiffies);
Heiner Kallweita3320bc2018-11-07 08:15:58 +0100493}
Heiner Kallweit97b33bd2019-05-30 15:11:06 +0200494EXPORT_SYMBOL(phy_queue_state_machine);
Heiner Kallweita3320bc2018-11-07 08:15:58 +0100495
496static void phy_trigger_machine(struct phy_device *phydev)
497{
498 phy_queue_state_machine(phydev, 0);
499}
500
Heiner Kallweit76299582018-07-12 21:31:54 +0200501static int phy_config_aneg(struct phy_device *phydev)
502{
503 if (phydev->drv->config_aneg)
504 return phydev->drv->config_aneg(phydev);
Camelia Groza34786002018-07-23 18:06:15 +0300505
506 /* Clause 45 PHYs that don't implement Clause 22 registers are not
507 * allowed to call genphy_config_aneg()
508 */
509 if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0)))
510 return -EOPNOTSUPP;
511
512 return genphy_config_aneg(phydev);
Heiner Kallweit76299582018-07-12 21:31:54 +0200513}
514
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800515/**
Heiner Kallweit74a992b2018-11-07 20:45:58 +0100516 * phy_check_link_status - check link status and set state accordingly
517 * @phydev: the phy_device struct
518 *
519 * Description: Check for link and whether autoneg was triggered / is running
520 * and set state accordingly
521 */
522static int phy_check_link_status(struct phy_device *phydev)
523{
524 int err;
525
526 WARN_ON(!mutex_is_locked(&phydev->lock));
527
528 err = phy_read_status(phydev);
529 if (err)
530 return err;
531
532 if (phydev->link && phydev->state != PHY_RUNNING) {
533 phydev->state = PHY_RUNNING;
534 phy_link_up(phydev);
535 } else if (!phydev->link && phydev->state != PHY_NOLINK) {
536 phydev->state = PHY_NOLINK;
537 phy_link_down(phydev, true);
538 }
539
540 return 0;
541}
542
543/**
Heiner Kallweitc45d7152018-10-15 21:25:13 +0200544 * phy_start_aneg - start auto-negotiation for this PHY device
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800545 * @phydev: the phy_device struct
Andy Fleminge1393452005-08-24 18:46:21 -0500546 *
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800547 * Description: Sanitizes the settings (if we're not autonegotiating
548 * them), and then calls the driver's config_aneg function.
549 * If the PHYCONTROL Layer is operating, we change the state to
550 * reflect the beginning of Auto-negotiation or forcing.
Andy Fleminge1393452005-08-24 18:46:21 -0500551 */
Heiner Kallweitc45d7152018-10-15 21:25:13 +0200552int phy_start_aneg(struct phy_device *phydev)
Andy Fleminge1393452005-08-24 18:46:21 -0500553{
554 int err;
555
Florian Fainelli25149ef2017-02-17 16:07:34 -0800556 if (!phydev->drv)
557 return -EIO;
558
Nate Case35b5f6b2008-01-29 10:05:09 -0600559 mutex_lock(&phydev->lock);
Andy Fleminge1393452005-08-24 18:46:21 -0500560
561 if (AUTONEG_DISABLE == phydev->autoneg)
562 phy_sanitize_settings(phydev);
563
Ben Hutchings9b3320e2015-01-27 00:58:15 +0000564 /* Invalidate LP advertising flags */
Andrew Lunnc0ec3c22018-11-10 23:43:34 +0100565 linkmode_zero(phydev->lp_advertising);
Ben Hutchings9b3320e2015-01-27 00:58:15 +0000566
Heiner Kallweit76299582018-07-12 21:31:54 +0200567 err = phy_config_aneg(phydev);
Andy Fleminge1393452005-08-24 18:46:21 -0500568 if (err < 0)
569 goto out_unlock;
570
Heiner Kallweit2bd229d2019-06-04 23:02:34 +0200571 if (phy_is_started(phydev))
572 err = phy_check_link_status(phydev);
Andy Fleminge1393452005-08-24 18:46:21 -0500573out_unlock:
Nate Case35b5f6b2008-01-29 10:05:09 -0600574 mutex_unlock(&phydev->lock);
Alexander Kochetkovf555f342017-04-20 14:00:04 +0300575
Andy Fleminge1393452005-08-24 18:46:21 -0500576 return err;
577}
578EXPORT_SYMBOL(phy_start_aneg);
579
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200580static int phy_poll_aneg_done(struct phy_device *phydev)
581{
582 unsigned int retries = 100;
583 int ret;
584
585 do {
586 msleep(100);
587 ret = phy_aneg_done(phydev);
588 } while (!ret && --retries);
589
590 if (!ret)
591 return -ETIMEDOUT;
592
593 return ret < 0 ? ret : 0;
594}
595
596/**
597 * phy_speed_down - set speed to lowest speed supported by both link partners
598 * @phydev: the phy_device struct
599 * @sync: perform action synchronously
600 *
601 * Description: Typically used to save energy when waiting for a WoL packet
602 *
603 * WARNING: Setting sync to false may cause the system being unable to suspend
604 * in case the PHY generates an interrupt when finishing the autonegotiation.
605 * This interrupt may wake up the system immediately after suspend.
606 * Therefore use sync = false only if you're sure it's safe with the respective
607 * network chip.
608 */
609int phy_speed_down(struct phy_device *phydev, bool sync)
610{
Heiner Kallweit65b27992019-08-12 23:52:19 +0200611 __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp);
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200612 int ret;
613
614 if (phydev->autoneg != AUTONEG_ENABLE)
615 return 0;
616
Heiner Kallweit65b27992019-08-12 23:52:19 +0200617 linkmode_copy(adv_tmp, phydev->advertising);
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200618
Heiner Kallweit65b27992019-08-12 23:52:19 +0200619 ret = phy_speed_down_core(phydev);
620 if (ret)
621 return ret;
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100622
Heiner Kallweit65b27992019-08-12 23:52:19 +0200623 linkmode_copy(phydev->adv_old, adv_tmp);
624
625 if (linkmode_equal(phydev->advertising, adv_tmp))
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200626 return 0;
627
628 ret = phy_config_aneg(phydev);
629 if (ret)
630 return ret;
631
632 return sync ? phy_poll_aneg_done(phydev) : 0;
633}
634EXPORT_SYMBOL_GPL(phy_speed_down);
635
636/**
637 * phy_speed_up - (re)set advertised speeds to all supported speeds
638 * @phydev: the phy_device struct
639 *
640 * Description: Used to revert the effect of phy_speed_down
641 */
642int phy_speed_up(struct phy_device *phydev)
643{
Heiner Kallweit65b27992019-08-12 23:52:19 +0200644 __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp);
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200645
646 if (phydev->autoneg != AUTONEG_ENABLE)
647 return 0;
648
Heiner Kallweit65b27992019-08-12 23:52:19 +0200649 if (linkmode_empty(phydev->adv_old))
650 return 0;
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200651
Heiner Kallweit65b27992019-08-12 23:52:19 +0200652 linkmode_copy(adv_tmp, phydev->advertising);
653 linkmode_copy(phydev->advertising, phydev->adv_old);
654 linkmode_zero(phydev->adv_old);
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100655
Heiner Kallweit65b27992019-08-12 23:52:19 +0200656 if (linkmode_equal(phydev->advertising, adv_tmp))
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200657 return 0;
658
659 return phy_config_aneg(phydev);
660}
661EXPORT_SYMBOL_GPL(phy_speed_up);
662
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800663/**
664 * phy_start_machine - start PHY state machine tracking
665 * @phydev: the phy_device struct
Andy Fleming00db8182005-07-30 19:31:23 -0400666 *
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800667 * Description: The PHY infrastructure can run a state machine
Andy Fleming00db8182005-07-30 19:31:23 -0400668 * which tracks whether the PHY is starting up, negotiating,
Florian Fainellifb5e7606b2017-07-26 12:05:38 -0700669 * etc. This function starts the delayed workqueue which tracks
670 * the state of the PHY. If you want to maintain your own state machine,
Sergei Shtylyov29935ae2014-01-05 03:27:17 +0300671 * do not call this function.
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800672 */
Sergei Shtylyov29935ae2014-01-05 03:27:17 +0300673void phy_start_machine(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400674{
Heiner Kallweit6384e482018-10-11 19:31:47 +0200675 phy_trigger_machine(phydev);
Andy Fleming00db8182005-07-30 19:31:23 -0400676}
Russell King5e5758d2017-07-25 15:03:03 +0100677EXPORT_SYMBOL_GPL(phy_start_machine);
Andy Fleming00db8182005-07-30 19:31:23 -0400678
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800679/**
680 * phy_stop_machine - stop the PHY state machine tracking
681 * @phydev: target phy_device struct
Andy Fleming00db8182005-07-30 19:31:23 -0400682 *
Florian Fainellifb5e7606b2017-07-26 12:05:38 -0700683 * Description: Stops the state machine delayed workqueue, sets the
684 * state to UP (unless it wasn't up yet). This function must be
685 * called BEFORE phy_detach.
Andy Fleming00db8182005-07-30 19:31:23 -0400686 */
687void phy_stop_machine(struct phy_device *phydev)
688{
Marcin Slusarza390d1f2009-03-13 15:41:19 -0700689 cancel_delayed_work_sync(&phydev->state_queue);
Andy Fleming00db8182005-07-30 19:31:23 -0400690
Nate Case35b5f6b2008-01-29 10:05:09 -0600691 mutex_lock(&phydev->lock);
Heiner Kallweita2fc9d72019-02-13 20:11:40 +0100692 if (phy_is_started(phydev))
Andy Fleming00db8182005-07-30 19:31:23 -0400693 phydev->state = PHY_UP;
Nate Case35b5f6b2008-01-29 10:05:09 -0600694 mutex_unlock(&phydev->lock);
Andy Fleming00db8182005-07-30 19:31:23 -0400695}
696
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800697/**
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800698 * phy_error - enter HALTED state for this PHY device
699 * @phydev: target phy_device struct
Andy Fleming00db8182005-07-30 19:31:23 -0400700 *
701 * Moves the PHY to the HALTED state in response to a read
702 * or write error, and tells the controller the link is down.
703 * Must not be called from interrupt context, or while the
704 * phydev->lock is held.
705 */
Andy Fleming9b9a8bf2008-05-02 13:00:51 -0500706static void phy_error(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400707{
Heiner Kallweitfa7b28c2018-12-16 19:18:26 +0100708 WARN_ON(1);
709
Nate Case35b5f6b2008-01-29 10:05:09 -0600710 mutex_lock(&phydev->lock);
Andy Fleming00db8182005-07-30 19:31:23 -0400711 phydev->state = PHY_HALTED;
Nate Case35b5f6b2008-01-29 10:05:09 -0600712 mutex_unlock(&phydev->lock);
Andrew Lunn3c293f42016-10-12 22:14:53 +0200713
Heiner Kallweit9f2959b2018-09-28 08:51:09 +0200714 phy_trigger_machine(phydev);
Andy Fleming00db8182005-07-30 19:31:23 -0400715}
716
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800717/**
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800718 * phy_disable_interrupts - Disable the PHY interrupts from the PHY side
719 * @phydev: target phy_device struct
720 */
stephen hemminger89ff05e2010-10-21 08:37:41 +0000721static int phy_disable_interrupts(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400722{
723 int err;
724
725 /* Disable PHY interrupts */
726 err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
Andy Fleming00db8182005-07-30 19:31:23 -0400727 if (err)
Heiner Kallweit4fff2d32018-03-05 22:34:27 +0100728 return err;
Andy Fleming00db8182005-07-30 19:31:23 -0400729
730 /* Clear the interrupt */
Heiner Kallweit4fff2d32018-03-05 22:34:27 +0100731 return phy_clear_interrupt(phydev);
Andy Fleming00db8182005-07-30 19:31:23 -0400732}
Andy Fleminge1393452005-08-24 18:46:21 -0500733
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800734/**
Brad Mouringa2c054a2018-03-08 16:23:03 -0600735 * phy_interrupt - PHY interrupt handler
736 * @irq: interrupt line
737 * @phy_dat: phy_device pointer
738 *
Heiner Kallweit34d884e2018-11-09 18:58:01 +0100739 * Description: Handle PHY interrupt
Brad Mouringa2c054a2018-03-08 16:23:03 -0600740 */
741static irqreturn_t phy_interrupt(int irq, void *phy_dat)
742{
743 struct phy_device *phydev = phy_dat;
744
Heiner Kallweit34d884e2018-11-09 18:58:01 +0100745 if (phydev->drv->did_interrupt && !phydev->drv->did_interrupt(phydev))
746 return IRQ_NONE;
747
Heiner Kallweit49644e62019-05-30 15:10:06 +0200748 if (phydev->drv->handle_interrupt) {
749 if (phydev->drv->handle_interrupt(phydev))
750 goto phy_err;
751 } else {
752 /* reschedule state queue work to run as soon as possible */
753 phy_trigger_machine(phydev);
754 }
Heiner Kallweit34d884e2018-11-09 18:58:01 +0100755
756 if (phy_clear_interrupt(phydev))
757 goto phy_err;
758 return IRQ_HANDLED;
759
760phy_err:
761 phy_error(phydev);
762 return IRQ_NONE;
Brad Mouringa2c054a2018-03-08 16:23:03 -0600763}
764
765/**
766 * phy_enable_interrupts - Enable the interrupts from the PHY side
767 * @phydev: target phy_device struct
768 */
769static int phy_enable_interrupts(struct phy_device *phydev)
770{
771 int err = phy_clear_interrupt(phydev);
772
773 if (err < 0)
774 return err;
775
776 return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
777}
778
779/**
Heiner Kallweit07b09282019-05-30 15:09:15 +0200780 * phy_request_interrupt - request and enable interrupt for a PHY device
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800781 * @phydev: target phy_device struct
Andy Fleminge1393452005-08-24 18:46:21 -0500782 *
Heiner Kallweit07b09282019-05-30 15:09:15 +0200783 * Description: Request and enable the interrupt for the given PHY.
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800784 * If this fails, then we set irq to PHY_POLL.
Andy Fleminge1393452005-08-24 18:46:21 -0500785 * This should only be called with a valid IRQ number.
786 */
Heiner Kallweit434a4312019-01-23 07:31:58 +0100787void phy_request_interrupt(struct phy_device *phydev)
Andy Fleminge1393452005-08-24 18:46:21 -0500788{
Heiner Kallweit434a4312019-01-23 07:31:58 +0100789 int err;
Andy Fleminge1393452005-08-24 18:46:21 -0500790
Heiner Kallweit434a4312019-01-23 07:31:58 +0100791 err = request_threaded_irq(phydev->irq, NULL, phy_interrupt,
792 IRQF_ONESHOT | IRQF_SHARED,
793 phydev_name(phydev), phydev);
794 if (err) {
795 phydev_warn(phydev, "Error %d requesting IRQ %d, falling back to polling\n",
796 err, phydev->irq);
797 phydev->irq = PHY_POLL;
Heiner Kallweit07b09282019-05-30 15:09:15 +0200798 } else {
799 if (phy_enable_interrupts(phydev)) {
800 phydev_warn(phydev, "Can't enable interrupt, falling back to polling\n");
801 phy_free_interrupt(phydev);
802 phydev->irq = PHY_POLL;
803 }
Heiner Kallweit434a4312019-01-23 07:31:58 +0100804 }
Andy Fleminge1393452005-08-24 18:46:21 -0500805}
Heiner Kallweit434a4312019-01-23 07:31:58 +0100806EXPORT_SYMBOL(phy_request_interrupt);
Andy Fleminge1393452005-08-24 18:46:21 -0500807
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800808/**
Heiner Kallweit07b09282019-05-30 15:09:15 +0200809 * phy_free_interrupt - disable and free interrupt for a PHY device
810 * @phydev: target phy_device struct
811 *
812 * Description: Disable and free the interrupt for the given PHY.
813 * This should only be called with a valid IRQ number.
814 */
815void phy_free_interrupt(struct phy_device *phydev)
816{
817 phy_disable_interrupts(phydev);
818 free_irq(phydev->irq, phydev);
819}
820EXPORT_SYMBOL(phy_free_interrupt);
821
822/**
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800823 * phy_stop - Bring down the PHY link, and stop checking the status
824 * @phydev: target phy_device struct
825 */
Andy Fleminge1393452005-08-24 18:46:21 -0500826void phy_stop(struct phy_device *phydev)
827{
Heiner Kallweita2fc9d72019-02-13 20:11:40 +0100828 if (!phy_is_started(phydev)) {
Heiner Kallweit2b3e88e2018-12-16 18:30:14 +0100829 WARN(1, "called from state %s\n",
830 phy_state_to_str(phydev->state));
Heiner Kallweit2b3e88e2018-12-16 18:30:14 +0100831 return;
832 }
Andy Fleminge1393452005-08-24 18:46:21 -0500833
Heiner Kallweita2fc9d72019-02-13 20:11:40 +0100834 mutex_lock(&phydev->lock);
835
Maciej W. Rozycki6daf6532007-09-28 22:42:15 -0700836 phydev->state = PHY_HALTED;
837
Nate Case35b5f6b2008-01-29 10:05:09 -0600838 mutex_unlock(&phydev->lock);
Maciej W. Rozycki3c3070d72006-10-03 16:18:35 +0100839
Heiner Kallweite8cfd9d2018-09-18 21:56:32 +0200840 phy_state_machine(&phydev->state_queue.work);
Heiner Kallweitcbfd12b2019-01-17 20:08:39 +0100841 phy_stop_machine(phydev);
Heiner Kallweite8cfd9d2018-09-18 21:56:32 +0200842
Sergei Shtylyov2f53e902014-01-05 03:17:06 +0300843 /* Cannot call flush_scheduled_work() here as desired because
Heiner Kallweit34d884e2018-11-09 18:58:01 +0100844 * of rtnl_lock(), but PHY_HALTED shall guarantee irq handler
Maciej W. Rozycki3c3070d72006-10-03 16:18:35 +0100845 * will not reenable interrupts.
846 */
Andy Fleminge1393452005-08-24 18:46:21 -0500847}
Sergei Shtylyov2f53e902014-01-05 03:17:06 +0300848EXPORT_SYMBOL(phy_stop);
Andy Fleminge1393452005-08-24 18:46:21 -0500849
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800850/**
851 * phy_start - start or restart a PHY device
852 * @phydev: target phy_device struct
Andy Fleminge1393452005-08-24 18:46:21 -0500853 *
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800854 * Description: Indicates the attached device's readiness to
Andy Fleminge1393452005-08-24 18:46:21 -0500855 * handle PHY-related work. Used during startup to start the
856 * PHY, and after a call to phy_stop() to resume operation.
857 * Also used to indicate the MDIO bus has cleared an error
858 * condition.
859 */
860void phy_start(struct phy_device *phydev)
861{
Nate Case35b5f6b2008-01-29 10:05:09 -0600862 mutex_lock(&phydev->lock);
Andy Fleminge1393452005-08-24 18:46:21 -0500863
Heiner Kallweit21796262019-01-23 07:30:38 +0100864 if (phydev->state != PHY_READY && phydev->state != PHY_HALTED) {
865 WARN(1, "called from state %s\n",
866 phy_state_to_str(phydev->state));
867 goto out;
868 }
869
Heiner Kallweit9e573cf2019-01-23 07:31:23 +0100870 /* if phy was suspended, bring the physical link up again */
871 __phy_resume(phydev);
Russell Kingf5e64032017-12-12 10:45:36 +0000872
Heiner Kallweitf24098f2019-05-01 22:14:21 +0200873 phydev->state = PHY_UP;
Heiner Kallweit9e573cf2019-01-23 07:31:23 +0100874
875 phy_start_machine(phydev);
Heiner Kallweit21796262019-01-23 07:30:38 +0100876out:
Nate Case35b5f6b2008-01-29 10:05:09 -0600877 mutex_unlock(&phydev->lock);
Andy Fleminge1393452005-08-24 18:46:21 -0500878}
Andy Fleminge1393452005-08-24 18:46:21 -0500879EXPORT_SYMBOL(phy_start);
Jeff Garzik67c4f3f2005-08-11 02:07:25 -0400880
Nate Case35b5f6b2008-01-29 10:05:09 -0600881/**
882 * phy_state_machine - Handle the state machine
883 * @work: work_struct that describes the work to be done
Nate Case35b5f6b2008-01-29 10:05:09 -0600884 */
Anton Vorontsov4f9c85a2010-01-18 05:37:16 +0000885void phy_state_machine(struct work_struct *work)
Andy Fleming00db8182005-07-30 19:31:23 -0400886{
Jean Delvarebf6aede2009-04-02 16:56:54 -0700887 struct delayed_work *dwork = to_delayed_work(work);
Nate Case35b5f6b2008-01-29 10:05:09 -0600888 struct phy_device *phydev =
Marcin Slusarza390d1f2009-03-13 15:41:19 -0700889 container_of(dwork, struct phy_device, state_queue);
Tim Bealec15e10e2015-05-18 15:38:38 +1200890 bool needs_aneg = false, do_suspend = false;
Florian Fainelli3e2186e2015-05-16 10:17:56 -0700891 enum phy_state old_state;
Andy Fleming00db8182005-07-30 19:31:23 -0400892 int err = 0;
893
Nate Case35b5f6b2008-01-29 10:05:09 -0600894 mutex_lock(&phydev->lock);
Andy Fleming00db8182005-07-30 19:31:23 -0400895
Florian Fainelli3e2186e2015-05-16 10:17:56 -0700896 old_state = phydev->state;
897
Florian Fainellie1093742013-12-17 21:38:12 -0800898 switch (phydev->state) {
899 case PHY_DOWN:
Florian Fainellie1093742013-12-17 21:38:12 -0800900 case PHY_READY:
Florian Fainellie1093742013-12-17 21:38:12 -0800901 break;
902 case PHY_UP:
Zhangfei Gao6e14a5ee2014-05-15 13:35:34 +0800903 needs_aneg = true;
Florian Fainellie1093742013-12-17 21:38:12 -0800904
Florian Fainellie1093742013-12-17 21:38:12 -0800905 break;
906 case PHY_NOLINK:
Heiner Kallweitc8e977b2018-11-07 20:47:53 +0100907 case PHY_RUNNING:
Heiner Kallweitc8e977b2018-11-07 20:47:53 +0100908 err = phy_check_link_status(phydev);
Florian Fainellie1093742013-12-17 21:38:12 -0800909 break;
Florian Fainellie1093742013-12-17 21:38:12 -0800910 case PHY_HALTED:
911 if (phydev->link) {
912 phydev->link = 0;
Russell Kinga81497b2017-07-25 15:02:58 +0100913 phy_link_down(phydev, true);
Zhangfei Gao6e14a5ee2014-05-15 13:35:34 +0800914 do_suspend = true;
Florian Fainellie1093742013-12-17 21:38:12 -0800915 }
916 break;
Andy Fleming00db8182005-07-30 19:31:23 -0400917 }
918
Nate Case35b5f6b2008-01-29 10:05:09 -0600919 mutex_unlock(&phydev->lock);
Andy Fleming00db8182005-07-30 19:31:23 -0400920
921 if (needs_aneg)
Heiner Kallweitc45d7152018-10-15 21:25:13 +0200922 err = phy_start_aneg(phydev);
Zhangfei Gao6e14a5ee2014-05-15 13:35:34 +0800923 else if (do_suspend)
Sebastian Hesselbarthbe9dad12013-12-13 10:20:29 +0100924 phy_suspend(phydev);
925
Andy Fleming00db8182005-07-30 19:31:23 -0400926 if (err < 0)
927 phy_error(phydev);
928
Heiner Kallweit5c5f6262019-03-19 19:56:51 +0100929 if (old_state != phydev->state) {
Marc Gonzalez6a95bef2017-07-28 13:18:30 +0200930 phydev_dbg(phydev, "PHY state change %s -> %s\n",
931 phy_state_to_str(old_state),
932 phy_state_to_str(phydev->state));
Heiner Kallweit5c5f6262019-03-19 19:56:51 +0100933 if (phydev->drv && phydev->drv->link_change_notify)
934 phydev->drv->link_change_notify(phydev);
935 }
Florian Fainelli3e2186e2015-05-16 10:17:56 -0700936
Florian Fainellid5c3d842016-01-18 19:33:06 -0800937 /* Only re-schedule a PHY state machine change if we are polling the
938 * PHY, if PHY_IGNORE_INTERRUPT is set, then we will be moving
Heiner Kallweit075ddeb2018-09-20 22:34:25 +0200939 * between states from phy_mac_interrupt().
940 *
941 * In state PHY_HALTED the PHY gets suspended, so rescheduling the
942 * state machine would be pointless and possibly error prone when
943 * called from phy_disconnect() synchronously.
Florian Fainellid5c3d842016-01-18 19:33:06 -0800944 */
Heiner Kallweita2004902019-02-13 20:12:54 +0100945 mutex_lock(&phydev->lock);
Heiner Kallweit2b3e88e2018-12-16 18:30:14 +0100946 if (phy_polling_mode(phydev) && phy_is_started(phydev))
Heiner Kallweit9f2959b2018-09-28 08:51:09 +0200947 phy_queue_state_machine(phydev, PHY_STATE_TIME);
Heiner Kallweita2004902019-02-13 20:12:54 +0100948 mutex_unlock(&phydev->lock);
Nate Case35b5f6b2008-01-29 10:05:09 -0600949}
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +0000950
Andrew Lunn664fcf12016-10-16 19:56:51 +0200951/**
952 * phy_mac_interrupt - MAC says the link has changed
953 * @phydev: phy_device struct with changed link
Andrew Lunn664fcf12016-10-16 19:56:51 +0200954 *
Heiner Kallweit28b2e0d2018-01-10 21:21:31 +0100955 * The MAC layer is able to indicate there has been a change in the PHY link
956 * status. Trigger the state machine and work a work queue.
Andrew Lunn664fcf12016-10-16 19:56:51 +0200957 */
Heiner Kallweit28b2e0d2018-01-10 21:21:31 +0100958void phy_mac_interrupt(struct phy_device *phydev)
Florian Fainelli5ea94e72013-05-19 22:53:43 +0000959{
Florian Fainellideccd16f92016-01-18 19:33:07 -0800960 /* Trigger a state machine change */
Heiner Kallweitd73a2152018-11-09 18:56:52 +0100961 phy_trigger_machine(phydev);
Florian Fainelli5ea94e72013-05-19 22:53:43 +0000962}
963EXPORT_SYMBOL(phy_mac_interrupt);
964
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100965static void mmd_eee_adv_to_linkmode(unsigned long *advertising, u16 eee_adv)
966{
967 linkmode_zero(advertising);
968
969 if (eee_adv & MDIO_EEE_100TX)
970 linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
971 advertising);
972 if (eee_adv & MDIO_EEE_1000T)
973 linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
974 advertising);
975 if (eee_adv & MDIO_EEE_10GT)
976 linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
977 advertising);
978 if (eee_adv & MDIO_EEE_1000KX)
979 linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
980 advertising);
981 if (eee_adv & MDIO_EEE_10GKX4)
982 linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
983 advertising);
984 if (eee_adv & MDIO_EEE_10GKR)
985 linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
986 advertising);
987}
988
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +0000989/**
990 * phy_init_eee - init and check the EEE feature
991 * @phydev: target phy_device struct
992 * @clk_stop_enable: PHY may stop the clock during LPI
993 *
994 * Description: it checks if the Energy-Efficient Ethernet (EEE)
995 * is supported by looking at the MMD registers 3.20 and 7.60/61
996 * and it programs the MMD register 3.0 setting the "Clock stop enable"
997 * bit if required.
998 */
999int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable)
1000{
Florian Fainelli25149ef2017-02-17 16:07:34 -08001001 if (!phydev->drv)
1002 return -EIO;
1003
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001004 /* According to 802.3az,the EEE is supported only in full duplex-mode.
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001005 */
Russell King32d75142017-03-31 10:37:18 +01001006 if (phydev->duplex == DUPLEX_FULL) {
Andrew Lunn3c1bcc82018-11-10 23:43:33 +01001007 __ETHTOOL_DECLARE_LINK_MODE_MASK(common);
1008 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp);
1009 __ETHTOOL_DECLARE_LINK_MODE_MASK(adv);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001010 int eee_lp, eee_cap, eee_adv;
Bjorn Helgaas4ae6e502014-03-04 17:35:44 -07001011 int status;
Andrew Lunn3c1bcc82018-11-10 23:43:33 +01001012 u32 cap;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001013
1014 /* Read phy status to properly get the right settings */
1015 status = phy_read_status(phydev);
1016 if (status)
1017 return status;
1018
1019 /* First check if the EEE ability is supported */
Russell Kinga6d99fc2017-03-21 16:36:53 +00001020 eee_cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001021 if (eee_cap <= 0)
1022 goto eee_exit_err;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001023
Allan, Bruce Wb32607d2012-08-20 04:55:29 +00001024 cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001025 if (!cap)
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001026 goto eee_exit_err;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001027
1028 /* Check which link settings negotiated and verify it in
1029 * the EEE advertising registers.
1030 */
Russell Kinga6d99fc2017-03-21 16:36:53 +00001031 eee_lp = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001032 if (eee_lp <= 0)
1033 goto eee_exit_err;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001034
Russell Kinga6d99fc2017-03-21 16:36:53 +00001035 eee_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001036 if (eee_adv <= 0)
1037 goto eee_exit_err;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001038
Andrew Lunn3c1bcc82018-11-10 23:43:33 +01001039 mmd_eee_adv_to_linkmode(adv, eee_adv);
1040 mmd_eee_adv_to_linkmode(lp, eee_lp);
1041 linkmode_and(common, adv, lp);
1042
1043 if (!phy_check_valid(phydev->speed, phydev->duplex, common))
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001044 goto eee_exit_err;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001045
Heiner Kallweitb52c0182019-02-06 07:38:43 +01001046 if (clk_stop_enable)
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001047 /* Configure the PHY to stop receiving xMII
1048 * clock while it is signaling LPI.
1049 */
Heiner Kallweitb52c0182019-02-06 07:38:43 +01001050 phy_set_bits_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1,
1051 MDIO_PCS_CTRL1_CLKSTOP_EN);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001052
Sergei Shtylyove62a7682014-01-05 03:21:52 +03001053 return 0; /* EEE supported */
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001054 }
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001055eee_exit_err:
Sergei Shtylyove62a7682014-01-05 03:21:52 +03001056 return -EPROTONOSUPPORT;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001057}
1058EXPORT_SYMBOL(phy_init_eee);
1059
1060/**
1061 * phy_get_eee_err - report the EEE wake error count
1062 * @phydev: target phy_device struct
1063 *
1064 * Description: it is to report the number of time where the PHY
1065 * failed to complete its normal wake sequence.
1066 */
1067int phy_get_eee_err(struct phy_device *phydev)
1068{
Florian Fainelli25149ef2017-02-17 16:07:34 -08001069 if (!phydev->drv)
1070 return -EIO;
1071
Russell Kinga6d99fc2017-03-21 16:36:53 +00001072 return phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001073}
1074EXPORT_SYMBOL(phy_get_eee_err);
1075
1076/**
1077 * phy_ethtool_get_eee - get EEE supported and status
1078 * @phydev: target phy_device struct
1079 * @data: ethtool_eee data
1080 *
1081 * Description: it reportes the Supported/Advertisement/LP Advertisement
1082 * capabilities.
1083 */
1084int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data)
1085{
1086 int val;
1087
Florian Fainelli25149ef2017-02-17 16:07:34 -08001088 if (!phydev->drv)
1089 return -EIO;
1090
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001091 /* Get Supported EEE */
Russell Kinga6d99fc2017-03-21 16:36:53 +00001092 val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001093 if (val < 0)
1094 return val;
Allan, Bruce Wb32607d2012-08-20 04:55:29 +00001095 data->supported = mmd_eee_cap_to_ethtool_sup_t(val);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001096
1097 /* Get advertisement EEE */
Russell Kinga6d99fc2017-03-21 16:36:53 +00001098 val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001099 if (val < 0)
1100 return val;
Allan, Bruce Wb32607d2012-08-20 04:55:29 +00001101 data->advertised = mmd_eee_adv_to_ethtool_adv_t(val);
Heiner Kallweitd1420bb2018-11-27 22:30:14 +01001102 data->eee_enabled = !!data->advertised;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001103
1104 /* Get LP advertisement EEE */
Russell Kinga6d99fc2017-03-21 16:36:53 +00001105 val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001106 if (val < 0)
1107 return val;
Allan, Bruce Wb32607d2012-08-20 04:55:29 +00001108 data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001109
Heiner Kallweitd1420bb2018-11-27 22:30:14 +01001110 data->eee_active = !!(data->advertised & data->lp_advertised);
1111
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001112 return 0;
1113}
1114EXPORT_SYMBOL(phy_ethtool_get_eee);
1115
1116/**
1117 * phy_ethtool_set_eee - set EEE supported and status
1118 * @phydev: target phy_device struct
1119 * @data: ethtool_eee data
1120 *
1121 * Description: it is to program the Advertisement EEE register.
1122 */
1123int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data)
1124{
Heiner Kallweitd1420bb2018-11-27 22:30:14 +01001125 int cap, old_adv, adv = 0, ret;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001126
Florian Fainelli25149ef2017-02-17 16:07:34 -08001127 if (!phydev->drv)
1128 return -EIO;
1129
Russell King83ea0672017-03-31 10:37:07 +01001130 /* Get Supported EEE */
1131 cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
1132 if (cap < 0)
1133 return cap;
1134
Russell Kingf75abeb2017-03-31 10:37:12 +01001135 old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
1136 if (old_adv < 0)
1137 return old_adv;
1138
Heiner Kallweitd1420bb2018-11-27 22:30:14 +01001139 if (data->eee_enabled) {
1140 adv = !data->advertised ? cap :
1141 ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap;
1142 /* Mask prohibited EEE modes */
1143 adv &= ~phydev->eee_broken_modes;
1144 }
jbrunetd853d142016-11-28 10:46:46 +01001145
Russell Kingf75abeb2017-03-31 10:37:12 +01001146 if (old_adv != adv) {
1147 ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv);
1148 if (ret < 0)
1149 return ret;
1150
1151 /* Restart autonegotiation so the new modes get sent to the
1152 * link partner.
1153 */
Russell King002ba7052017-06-05 12:23:00 +01001154 ret = phy_restart_aneg(phydev);
Russell Kingf75abeb2017-03-31 10:37:12 +01001155 if (ret < 0)
1156 return ret;
1157 }
1158
1159 return 0;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001160}
1161EXPORT_SYMBOL(phy_ethtool_set_eee);
Michael Stapelberg42e836e2013-03-11 13:56:44 +00001162
1163int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
1164{
Florian Fainelli25149ef2017-02-17 16:07:34 -08001165 if (phydev->drv && phydev->drv->set_wol)
Michael Stapelberg42e836e2013-03-11 13:56:44 +00001166 return phydev->drv->set_wol(phydev, wol);
1167
1168 return -EOPNOTSUPP;
1169}
1170EXPORT_SYMBOL(phy_ethtool_set_wol);
1171
1172void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
1173{
Florian Fainelli25149ef2017-02-17 16:07:34 -08001174 if (phydev->drv && phydev->drv->get_wol)
Michael Stapelberg42e836e2013-03-11 13:56:44 +00001175 phydev->drv->get_wol(phydev, wol);
1176}
1177EXPORT_SYMBOL(phy_ethtool_get_wol);
Philippe Reynes9d9a77c2016-05-10 00:19:41 +02001178
1179int phy_ethtool_get_link_ksettings(struct net_device *ndev,
1180 struct ethtool_link_ksettings *cmd)
1181{
1182 struct phy_device *phydev = ndev->phydev;
1183
1184 if (!phydev)
1185 return -ENODEV;
1186
yuval.shaia@oracle.com55141742017-06-13 10:09:46 +03001187 phy_ethtool_ksettings_get(phydev, cmd);
1188
1189 return 0;
Philippe Reynes9d9a77c2016-05-10 00:19:41 +02001190}
1191EXPORT_SYMBOL(phy_ethtool_get_link_ksettings);
1192
1193int phy_ethtool_set_link_ksettings(struct net_device *ndev,
1194 const struct ethtool_link_ksettings *cmd)
1195{
1196 struct phy_device *phydev = ndev->phydev;
1197
1198 if (!phydev)
1199 return -ENODEV;
1200
1201 return phy_ethtool_ksettings_set(phydev, cmd);
1202}
1203EXPORT_SYMBOL(phy_ethtool_set_link_ksettings);
Florian Fainellie86a8982016-11-15 10:06:30 -08001204
1205int phy_ethtool_nway_reset(struct net_device *ndev)
1206{
1207 struct phy_device *phydev = ndev->phydev;
1208
1209 if (!phydev)
1210 return -ENODEV;
1211
Florian Fainelli25149ef2017-02-17 16:07:34 -08001212 if (!phydev->drv)
1213 return -EIO;
1214
Russell King002ba7052017-06-05 12:23:00 +01001215 return phy_restart_aneg(phydev);
Florian Fainellie86a8982016-11-15 10:06:30 -08001216}
1217EXPORT_SYMBOL(phy_ethtool_nway_reset);