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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>
Andrew Lunna68a8132020-05-10 21:12:30 +020018#include <linux/netlink.h>
Andy Fleming00db8182005-07-30 19:31:23 -040019#include <linux/etherdevice.h>
20#include <linux/skbuff.h>
Andy Fleming00db8182005-07-30 19:31:23 -040021#include <linux/mm.h>
22#include <linux/module.h>
Andy Fleming00db8182005-07-30 19:31:23 -040023#include <linux/mii.h>
24#include <linux/ethtool.h>
Andrew Lunn1dd3f212020-05-10 21:12:36 +020025#include <linux/ethtool_netlink.h>
Andy Fleming00db8182005-07-30 19:31:23 -040026#include <linux/phy.h>
Geert Uytterhoevend6f8cfa2017-01-25 11:39:49 +010027#include <linux/phy_led_triggers.h>
Russell King298e54f2019-11-15 19:56:51 +000028#include <linux/sfp.h>
Maciej W. Rozycki3c3070d72006-10-03 16:18:35 +010029#include <linux/workqueue.h>
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +000030#include <linux/mdio.h>
Sergei Shtylyov2f53e902014-01-05 03:17:06 +030031#include <linux/io.h>
32#include <linux/uaccess.h>
Arun Sharma600634972011-07-26 16:09:06 -070033#include <linux/atomic.h>
Lukas Wunner1758bde2022-06-28 12:15:08 +020034#include <linux/suspend.h>
Andrew Lunn1dd3f212020-05-10 21:12:36 +020035#include <net/netlink.h>
36#include <net/genetlink.h>
37#include <net/sock.h>
Sergei Shtylyov2f53e902014-01-05 03:17:06 +030038
Heiner Kallweit97b33bd2019-05-30 15:11:06 +020039#define PHY_STATE_TIME HZ
40
Florian Fainelli3e2186e2015-05-16 10:17:56 -070041#define PHY_STATE_STR(_state) \
42 case PHY_##_state: \
43 return __stringify(_state); \
44
45static const char *phy_state_to_str(enum phy_state st)
46{
47 switch (st) {
48 PHY_STATE_STR(DOWN)
Florian Fainelli3e2186e2015-05-16 10:17:56 -070049 PHY_STATE_STR(READY)
Florian Fainelli3e2186e2015-05-16 10:17:56 -070050 PHY_STATE_STR(UP)
Florian Fainelli3e2186e2015-05-16 10:17:56 -070051 PHY_STATE_STR(RUNNING)
52 PHY_STATE_STR(NOLINK)
Andrew Lunna68a8132020-05-10 21:12:30 +020053 PHY_STATE_STR(CABLETEST)
Florian Fainelli3e2186e2015-05-16 10:17:56 -070054 PHY_STATE_STR(HALTED)
Florian Fainelli3e2186e2015-05-16 10:17:56 -070055 }
56
57 return NULL;
58}
59
Heiner Kallweit74a992b2018-11-07 20:45:58 +010060static void phy_link_up(struct phy_device *phydev)
61{
Doug Bergera3075932020-05-18 15:23:59 -070062 phydev->phy_link_change(phydev, true);
Heiner Kallweit74a992b2018-11-07 20:45:58 +010063 phy_led_trigger_change_speed(phydev);
64}
65
Doug Bergera3075932020-05-18 15:23:59 -070066static void phy_link_down(struct phy_device *phydev)
Heiner Kallweit74a992b2018-11-07 20:45:58 +010067{
Doug Bergera3075932020-05-18 15:23:59 -070068 phydev->phy_link_change(phydev, false);
Heiner Kallweit74a992b2018-11-07 20:45:58 +010069 phy_led_trigger_change_speed(phydev);
70}
Florian Fainelli3e2186e2015-05-16 10:17:56 -070071
Heiner Kallweit23bfaa52019-05-05 19:03:51 +020072static const char *phy_pause_str(struct phy_device *phydev)
73{
74 bool local_pause, local_asym_pause;
75
76 if (phydev->autoneg == AUTONEG_DISABLE)
77 goto no_pause;
78
79 local_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
80 phydev->advertising);
81 local_asym_pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
82 phydev->advertising);
83
84 if (local_pause && phydev->pause)
85 return "rx/tx";
86
87 if (local_asym_pause && phydev->asym_pause) {
88 if (local_pause)
89 return "rx";
90 if (phydev->pause)
91 return "tx";
92 }
93
94no_pause:
95 return "off";
96}
97
Randy Dunlapb3df0da2007-03-06 02:41:48 -080098/**
99 * phy_print_status - Convenience function to print out the current phy status
100 * @phydev: the phy_device struct
Andy Fleminge1393452005-08-24 18:46:21 -0500101 */
102void phy_print_status(struct phy_device *phydev)
103{
Sergei Shtylyov2f53e902014-01-05 03:17:06 +0300104 if (phydev->link) {
Florian Fainellidf40cc882014-02-11 17:27:34 -0800105 netdev_info(phydev->attached_dev,
Heiner Kallweit5eee3bb2020-03-20 17:51:38 +0100106 "Link is Up - %s/%s %s- flow control %s\n",
Florian Fainelli766d1d32014-02-11 17:27:35 -0800107 phy_speed_to_str(phydev->speed),
Russell Kingda4625a2017-07-25 15:02:42 +0100108 phy_duplex_to_str(phydev->duplex),
Heiner Kallweit5eee3bb2020-03-20 17:51:38 +0100109 phydev->downshifted_rate ? "(downshifted) " : "",
Heiner Kallweit23bfaa52019-05-05 19:03:51 +0200110 phy_pause_str(phydev));
Sergei Shtylyov2f53e902014-01-05 03:17:06 +0300111 } else {
Florian Fainelli43b63292014-02-11 17:27:33 -0800112 netdev_info(phydev->attached_dev, "Link is Down\n");
Sergei Shtylyov2f53e902014-01-05 03:17:06 +0300113 }
Andy Fleminge1393452005-08-24 18:46:21 -0500114}
115EXPORT_SYMBOL(phy_print_status);
Andy Fleming00db8182005-07-30 19:31:23 -0400116
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800117/**
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800118 * phy_config_interrupt - configure the PHY device for the requested interrupts
119 * @phydev: the phy_device struct
120 * @interrupts: interrupt flags to configure for this @phydev
121 *
Florian Fainelliad033502014-02-11 17:27:38 -0800122 * Returns 0 on success or < 0 on error.
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800123 */
Heiner Kallweit695bce82018-11-09 18:35:52 +0100124static int phy_config_interrupt(struct phy_device *phydev, bool interrupts)
Andy Fleming00db8182005-07-30 19:31:23 -0400125{
Heiner Kallweit695bce82018-11-09 18:35:52 +0100126 phydev->interrupts = interrupts ? 1 : 0;
Andy Fleming00db8182005-07-30 19:31:23 -0400127 if (phydev->drv->config_intr)
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300128 return phydev->drv->config_intr(phydev);
Andy Fleming00db8182005-07-30 19:31:23 -0400129
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300130 return 0;
Andy Fleming00db8182005-07-30 19:31:23 -0400131}
132
Russell King002ba7052017-06-05 12:23:00 +0100133/**
134 * phy_restart_aneg - restart auto-negotiation
135 * @phydev: target phy_device struct
136 *
137 * Restart the autonegotiation on @phydev. Returns >= 0 on success or
138 * negative errno on error.
139 */
140int phy_restart_aneg(struct phy_device *phydev)
141{
142 int ret;
143
144 if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0)))
145 ret = genphy_c45_restart_aneg(phydev);
146 else
147 ret = genphy_restart_aneg(phydev);
148
149 return ret;
150}
151EXPORT_SYMBOL_GPL(phy_restart_aneg);
Andy Fleming00db8182005-07-30 19:31:23 -0400152
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800153/**
154 * phy_aneg_done - return auto-negotiation status
155 * @phydev: target phy_device struct
Andy Fleming00db8182005-07-30 19:31:23 -0400156 *
Florian Fainelli76a423a2014-02-11 17:27:37 -0800157 * Description: Return the auto-negotiation status from this @phydev
158 * Returns > 0 on success or < 0 on error. 0 means that auto-negotiation
159 * is still pending.
Andy Fleming00db8182005-07-30 19:31:23 -0400160 */
Lendacky, Thomas372788f92016-11-10 17:10:46 -0600161int phy_aneg_done(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400162{
Florian Fainelli65f27672017-02-23 14:22:19 -0800163 if (phydev->drv && phydev->drv->aneg_done)
Florian Fainelli76a423a2014-02-11 17:27:37 -0800164 return phydev->drv->aneg_done(phydev);
Heiner Kallweitd7bed822019-03-02 17:10:00 +0100165 else if (phydev->is_c45)
166 return genphy_c45_aneg_done(phydev);
167 else
168 return genphy_aneg_done(phydev);
Andy Fleming00db8182005-07-30 19:31:23 -0400169}
Lendacky, Thomas372788f92016-11-10 17:10:46 -0600170EXPORT_SYMBOL(phy_aneg_done);
Andy Fleming00db8182005-07-30 19:31:23 -0400171
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800172/**
Russell Kingd0613032017-04-13 16:49:15 +0100173 * phy_find_valid - find a PHY setting that matches the requested parameters
174 * @speed: desired speed
175 * @duplex: desired duplex
176 * @supported: mask of supported link modes
Andy Fleming00db8182005-07-30 19:31:23 -0400177 *
Russell Kingd0613032017-04-13 16:49:15 +0100178 * Locate a supported phy setting that is, in priority order:
179 * - an exact match for the specified speed and duplex mode
180 * - a match for the specified speed, or slower speed
181 * - the slowest supported speed
182 * Returns the matched phy_setting entry, or %NULL if no supported phy
183 * settings were found.
Andy Fleming00db8182005-07-30 19:31:23 -0400184 */
Russell Kingd0613032017-04-13 16:49:15 +0100185static const struct phy_setting *
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100186phy_find_valid(int speed, int duplex, unsigned long *supported)
Andy Fleming00db8182005-07-30 19:31:23 -0400187{
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100188 return phy_lookup_setting(speed, duplex, supported, false);
Andy Fleming00db8182005-07-30 19:31:23 -0400189}
190
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800191/**
Zach Brown1f9127c2016-10-17 10:49:54 -0500192 * phy_supported_speeds - return all speeds currently supported by a phy device
193 * @phy: The phy device to return supported speeds of.
194 * @speeds: buffer to store supported speeds in.
195 * @size: size of speeds buffer.
196 *
197 * Description: Returns the number of supported speeds, and fills the speeds
198 * buffer with the supported speeds. If speeds buffer is too small to contain
199 * all currently supported speeds, will return as many speeds as can fit.
200 */
201unsigned int phy_supported_speeds(struct phy_device *phy,
202 unsigned int *speeds,
203 unsigned int size)
204{
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100205 return phy_speeds(speeds, size, phy->supported);
Zach Brown1f9127c2016-10-17 10:49:54 -0500206}
207
208/**
Guenter Roeck54da5a82015-02-17 09:36:22 -0800209 * phy_check_valid - check if there is a valid PHY setting which matches
210 * speed, duplex, and feature mask
211 * @speed: speed to match
212 * @duplex: duplex to match
213 * @features: A mask of the valid settings
214 *
215 * Description: Returns true if there is a valid setting, false otherwise.
216 */
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100217static inline bool phy_check_valid(int speed, int duplex,
218 unsigned long *features)
Guenter Roeck54da5a82015-02-17 09:36:22 -0800219{
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100220 return !!phy_lookup_setting(speed, duplex, features, true);
Guenter Roeck54da5a82015-02-17 09:36:22 -0800221}
222
223/**
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800224 * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex
225 * @phydev: the target phy_device struct
Andy Fleming00db8182005-07-30 19:31:23 -0400226 *
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800227 * Description: Make sure the PHY is set to supported speeds and
Andy Fleming00db8182005-07-30 19:31:23 -0400228 * duplexes. Drop down by one in this order: 1000/FULL,
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800229 * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF.
Andy Fleming00db8182005-07-30 19:31:23 -0400230 */
stephen hemminger89ff05e2010-10-21 08:37:41 +0000231static void phy_sanitize_settings(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400232{
Russell Kingd0613032017-04-13 16:49:15 +0100233 const struct phy_setting *setting;
Andy Fleming00db8182005-07-30 19:31:23 -0400234
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100235 setting = phy_find_valid(phydev->speed, phydev->duplex,
236 phydev->supported);
Russell Kingd0613032017-04-13 16:49:15 +0100237 if (setting) {
238 phydev->speed = setting->speed;
239 phydev->duplex = setting->duplex;
240 } else {
241 /* We failed to find anything (no supported speeds?) */
242 phydev->speed = SPEED_UNKNOWN;
243 phydev->duplex = DUPLEX_UNKNOWN;
244 }
Andy Fleming00db8182005-07-30 19:31:23 -0400245}
Andy Fleming00db8182005-07-30 19:31:23 -0400246
yuval.shaia@oracle.com55141742017-06-13 10:09:46 +0300247void phy_ethtool_ksettings_get(struct phy_device *phydev,
248 struct ethtool_link_ksettings *cmd)
Philippe Reynes2d551732016-04-15 00:35:00 +0200249{
Andrew Lunnc10a4852021-10-24 21:48:02 +0200250 mutex_lock(&phydev->lock);
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100251 linkmode_copy(cmd->link_modes.supported, phydev->supported);
252 linkmode_copy(cmd->link_modes.advertising, phydev->advertising);
Andrew Lunnc0ec3c22018-11-10 23:43:34 +0100253 linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising);
Philippe Reynes2d551732016-04-15 00:35:00 +0200254
255 cmd->base.speed = phydev->speed;
256 cmd->base.duplex = phydev->duplex;
Oleksij Rempelbdbdac72020-05-05 08:35:05 +0200257 cmd->base.master_slave_cfg = phydev->master_slave_get;
258 cmd->base.master_slave_state = phydev->master_slave_state;
Philippe Reynes2d551732016-04-15 00:35:00 +0200259 if (phydev->interface == PHY_INTERFACE_MODE_MOCA)
260 cmd->base.port = PORT_BNC;
261 else
Michael Walle4217a642021-02-09 17:38:52 +0100262 cmd->base.port = phydev->port;
Florian Fainelliceb62812017-09-20 15:52:14 -0700263 cmd->base.transceiver = phy_is_internal(phydev) ?
264 XCVR_INTERNAL : XCVR_EXTERNAL;
Philippe Reynes2d551732016-04-15 00:35:00 +0200265 cmd->base.phy_address = phydev->mdio.addr;
266 cmd->base.autoneg = phydev->autoneg;
Raju Lakkaraju1004ee62016-11-29 15:16:47 +0530267 cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl;
268 cmd->base.eth_tp_mdix = phydev->mdix;
Andrew Lunnc10a4852021-10-24 21:48:02 +0200269 mutex_unlock(&phydev->lock);
Philippe Reynes2d551732016-04-15 00:35:00 +0200270}
271EXPORT_SYMBOL(phy_ethtool_ksettings_get);
272
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800273/**
274 * phy_mii_ioctl - generic PHY MII ioctl interface
275 * @phydev: the phy_device struct
Randy Dunlap00c7d922010-08-09 13:41:59 +0000276 * @ifr: &struct ifreq for socket ioctl's
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800277 * @cmd: ioctl cmd to execute
278 *
279 * Note that this function is currently incompatible with the
Andy Fleming00db8182005-07-30 19:31:23 -0400280 * PHYCONTROL layer. It changes registers without regard to
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800281 * current state. Use at own risk.
Andy Fleming00db8182005-07-30 19:31:23 -0400282 */
Sergei Shtylyov2f53e902014-01-05 03:17:06 +0300283int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd)
Andy Fleming00db8182005-07-30 19:31:23 -0400284{
Richard Cochran28b04112010-07-17 08:48:55 +0000285 struct mii_ioctl_data *mii_data = if_mii(ifr);
Andy Fleming00db8182005-07-30 19:31:23 -0400286 u16 val = mii_data->val_in;
Brian Hill79ce0472014-11-11 13:39:39 -0700287 bool change_autoneg = false;
Russell Kingcdea04c2019-05-28 10:57:29 +0100288 int prtad, devad;
Andy Fleming00db8182005-07-30 19:31:23 -0400289
290 switch (cmd) {
291 case SIOCGMIIPHY:
Andrew Lunne5a03bf2016-01-06 20:11:16 +0100292 mii_data->phy_id = phydev->mdio.addr;
Gustavo A. R. Silvadf561f662020-08-23 17:36:59 -0500293 fallthrough;
Lennert Buytenhekc6d6a512008-09-18 03:06:52 +0000294
Andy Fleming00db8182005-07-30 19:31:23 -0400295 case SIOCGMIIREG:
Russell Kingcdea04c2019-05-28 10:57:29 +0100296 if (mdio_phy_id_is_c45(mii_data->phy_id)) {
297 prtad = mdio_phy_id_prtad(mii_data->phy_id);
298 devad = mdio_phy_id_devad(mii_data->phy_id);
Andrew Lunn260bdfe2022-04-30 19:30:34 +0200299 mii_data->val_out = mdiobus_c45_read(
300 phydev->mdio.bus, prtad, devad,
301 mii_data->reg_num);
Russell Kingcdea04c2019-05-28 10:57:29 +0100302 } else {
Andrew Lunn260bdfe2022-04-30 19:30:34 +0200303 mii_data->val_out = mdiobus_read(
304 phydev->mdio.bus, mii_data->phy_id,
305 mii_data->reg_num);
Russell Kingcdea04c2019-05-28 10:57:29 +0100306 }
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300307 return 0;
Andy Fleming00db8182005-07-30 19:31:23 -0400308
309 case SIOCSMIIREG:
Russell Kingcdea04c2019-05-28 10:57:29 +0100310 if (mdio_phy_id_is_c45(mii_data->phy_id)) {
311 prtad = mdio_phy_id_prtad(mii_data->phy_id);
312 devad = mdio_phy_id_devad(mii_data->phy_id);
Russell Kingcdea04c2019-05-28 10:57:29 +0100313 } else {
314 prtad = mii_data->phy_id;
315 devad = mii_data->reg_num;
316 }
317 if (prtad == phydev->mdio.addr) {
318 switch (devad) {
Andy Fleming00db8182005-07-30 19:31:23 -0400319 case MII_BMCR:
Brian Hill79ce0472014-11-11 13:39:39 -0700320 if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) {
321 if (phydev->autoneg == AUTONEG_ENABLE)
322 change_autoneg = true;
Andy Fleming00db8182005-07-30 19:31:23 -0400323 phydev->autoneg = AUTONEG_DISABLE;
Brian Hill79ce0472014-11-11 13:39:39 -0700324 if (val & BMCR_FULLDPLX)
325 phydev->duplex = DUPLEX_FULL;
326 else
327 phydev->duplex = DUPLEX_HALF;
328 if (val & BMCR_SPEED1000)
329 phydev->speed = SPEED_1000;
330 else if (val & BMCR_SPEED100)
331 phydev->speed = SPEED_100;
332 else phydev->speed = SPEED_10;
Wenpeng Liang169d7a42021-06-16 18:01:23 +0800333 } else {
Brian Hill79ce0472014-11-11 13:39:39 -0700334 if (phydev->autoneg == AUTONEG_DISABLE)
335 change_autoneg = true;
Andy Fleming00db8182005-07-30 19:31:23 -0400336 phydev->autoneg = AUTONEG_ENABLE;
Brian Hill79ce0472014-11-11 13:39:39 -0700337 }
Andy Fleming00db8182005-07-30 19:31:23 -0400338 break;
339 case MII_ADVERTISE:
Andrew Lunn9db299c2018-12-05 21:49:45 +0100340 mii_adv_mod_linkmode_adv_t(phydev->advertising,
341 val);
Brian Hill79ce0472014-11-11 13:39:39 -0700342 change_autoneg = true;
Andy Fleming00db8182005-07-30 19:31:23 -0400343 break;
Russell King4cf6c572019-10-04 17:05:58 +0100344 case MII_CTRL1000:
345 mii_ctrl1000_mod_linkmode_adv_t(phydev->advertising,
346 val);
347 change_autoneg = true;
348 break;
Andy Fleming00db8182005-07-30 19:31:23 -0400349 default:
350 /* do nothing */
351 break;
352 }
353 }
354
Andrew Lunn260bdfe2022-04-30 19:30:34 +0200355 if (mdio_phy_id_is_c45(mii_data->phy_id))
356 mdiobus_c45_write(phydev->mdio.bus, prtad, devad,
357 mii_data->reg_num, val);
358 else
359 mdiobus_write(phydev->mdio.bus, prtad, devad, val);
Peter Korsgaardaf1dc132011-03-10 06:52:13 +0000360
Russell Kingcdea04c2019-05-28 10:57:29 +0100361 if (prtad == phydev->mdio.addr &&
362 devad == MII_BMCR &&
Florian Fainelli2613f952013-12-06 13:01:31 -0800363 val & BMCR_RESET)
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300364 return phy_init_hw(phydev);
Brian Hill79ce0472014-11-11 13:39:39 -0700365
366 if (change_autoneg)
367 return phy_start_aneg(phydev);
368
Sergei Shtylyove62a7682014-01-05 03:21:52 +0300369 return 0;
David Woodhousedda93b482007-11-28 19:56:34 +0000370
Richard Cochranc1f19b52010-07-17 08:49:36 +0000371 case SIOCSHWTSTAMP:
Richard Cochran4715f652019-12-25 18:16:15 -0800372 if (phydev->mii_ts && phydev->mii_ts->hwtstamp)
373 return phydev->mii_ts->hwtstamp(phydev->mii_ts, ifr);
Gustavo A. R. Silvadf561f662020-08-23 17:36:59 -0500374 fallthrough;
Richard Cochranc1f19b52010-07-17 08:49:36 +0000375
David Woodhousedda93b482007-11-28 19:56:34 +0000376 default:
Lennert Buytenhekc6d6a512008-09-18 03:06:52 +0000377 return -EOPNOTSUPP;
Andy Fleming00db8182005-07-30 19:31:23 -0400378 }
Andy Fleming00db8182005-07-30 19:31:23 -0400379}
Domen Puncer680e9fe2007-09-17 22:21:40 +0200380EXPORT_SYMBOL(phy_mii_ioctl);
Andy Fleming00db8182005-07-30 19:31:23 -0400381
Heiner Kallweit2ab1d922020-01-19 14:31:55 +0100382/**
Arnd Bergmanna7605372021-07-27 15:45:13 +0200383 * phy_do_ioctl - generic ndo_eth_ioctl implementation
Heiner Kallweit2ab1d922020-01-19 14:31:55 +0100384 * @dev: the net_device struct
385 * @ifr: &struct ifreq for socket ioctl's
386 * @cmd: ioctl cmd to execute
387 */
Heiner Kallweitbbbf8432020-01-20 22:17:11 +0100388int phy_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
Heiner Kallweit2ab1d922020-01-19 14:31:55 +0100389{
Heiner Kallweitbbbf8432020-01-20 22:17:11 +0100390 if (!dev->phydev)
Heiner Kallweit2ab1d922020-01-19 14:31:55 +0100391 return -ENODEV;
392
393 return phy_mii_ioctl(dev->phydev, ifr, cmd);
394}
Heiner Kallweitbbbf8432020-01-20 22:17:11 +0100395EXPORT_SYMBOL(phy_do_ioctl);
396
Andrew Lunn4069a572020-09-23 00:29:03 +0200397/**
Arnd Bergmanna7605372021-07-27 15:45:13 +0200398 * phy_do_ioctl_running - generic ndo_eth_ioctl implementation but test first
Andrew Lunn4069a572020-09-23 00:29:03 +0200399 *
400 * @dev: the net_device struct
401 * @ifr: &struct ifreq for socket ioctl's
402 * @cmd: ioctl cmd to execute
403 *
404 * Same as phy_do_ioctl, but ensures that net_device is running before
405 * handling the ioctl.
406 */
Heiner Kallweitbbbf8432020-01-20 22:17:11 +0100407int phy_do_ioctl_running(struct net_device *dev, struct ifreq *ifr, int cmd)
408{
409 if (!netif_running(dev))
410 return -ENODEV;
411
412 return phy_do_ioctl(dev, ifr, cmd);
413}
Heiner Kallweit3231e5d2020-01-20 22:16:07 +0100414EXPORT_SYMBOL(phy_do_ioctl_running);
Heiner Kallweit2ab1d922020-01-19 14:31:55 +0100415
Andrew Lunn4069a572020-09-23 00:29:03 +0200416/**
417 * phy_queue_state_machine - Trigger the state machine to run soon
418 *
419 * @phydev: the phy_device struct
420 * @jiffies: Run the state machine after these jiffies
421 */
Heiner Kallweit97b33bd2019-05-30 15:11:06 +0200422void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies)
Heiner Kallweita3320bc2018-11-07 08:15:58 +0100423{
424 mod_delayed_work(system_power_efficient_wq, &phydev->state_queue,
Heiner Kallweit97b33bd2019-05-30 15:11:06 +0200425 jiffies);
Heiner Kallweita3320bc2018-11-07 08:15:58 +0100426}
Heiner Kallweit97b33bd2019-05-30 15:11:06 +0200427EXPORT_SYMBOL(phy_queue_state_machine);
Heiner Kallweita3320bc2018-11-07 08:15:58 +0100428
Andrew Lunn4069a572020-09-23 00:29:03 +0200429/**
Mauro Carvalho Chehab69280222020-11-16 11:17:57 +0100430 * phy_trigger_machine - Trigger the state machine to run now
Andrew Lunn4069a572020-09-23 00:29:03 +0200431 *
432 * @phydev: the phy_device struct
433 */
Ioana Ciornei293e9a32020-11-01 14:50:56 +0200434void phy_trigger_machine(struct phy_device *phydev)
Heiner Kallweita3320bc2018-11-07 08:15:58 +0100435{
436 phy_queue_state_machine(phydev, 0);
437}
Ioana Ciornei293e9a32020-11-01 14:50:56 +0200438EXPORT_SYMBOL(phy_trigger_machine);
Heiner Kallweita3320bc2018-11-07 08:15:58 +0100439
Andrew Lunna68a8132020-05-10 21:12:30 +0200440static void phy_abort_cable_test(struct phy_device *phydev)
441{
442 int err;
443
Andrew Lunn1dd3f212020-05-10 21:12:36 +0200444 ethnl_cable_test_finished(phydev);
445
Andrew Lunna68a8132020-05-10 21:12:30 +0200446 err = phy_init_hw(phydev);
447 if (err)
448 phydev_err(phydev, "Error while aborting cable test");
449}
450
Andrew Lunn4069a572020-09-23 00:29:03 +0200451/**
452 * phy_ethtool_get_strings - Get the statistic counter names
453 *
454 * @phydev: the phy_device struct
455 * @data: Where to put the strings
456 */
Florian Fainelli17809512020-07-08 09:46:25 -0700457int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data)
458{
459 if (!phydev->drv)
460 return -EIO;
461
462 mutex_lock(&phydev->lock);
463 phydev->drv->get_strings(phydev, data);
464 mutex_unlock(&phydev->lock);
465
466 return 0;
467}
468EXPORT_SYMBOL(phy_ethtool_get_strings);
469
Andrew Lunn4069a572020-09-23 00:29:03 +0200470/**
471 * phy_ethtool_get_sset_count - Get the number of statistic counters
472 *
473 * @phydev: the phy_device struct
474 */
Florian Fainelli17809512020-07-08 09:46:25 -0700475int phy_ethtool_get_sset_count(struct phy_device *phydev)
476{
477 int ret;
478
479 if (!phydev->drv)
480 return -EIO;
481
482 if (phydev->drv->get_sset_count &&
483 phydev->drv->get_strings &&
484 phydev->drv->get_stats) {
485 mutex_lock(&phydev->lock);
486 ret = phydev->drv->get_sset_count(phydev);
487 mutex_unlock(&phydev->lock);
488
489 return ret;
490 }
491
492 return -EOPNOTSUPP;
493}
494EXPORT_SYMBOL(phy_ethtool_get_sset_count);
495
Andrew Lunn4069a572020-09-23 00:29:03 +0200496/**
497 * phy_ethtool_get_stats - Get the statistic counters
498 *
499 * @phydev: the phy_device struct
500 * @stats: What counters to get
501 * @data: Where to store the counters
502 */
Florian Fainelli17809512020-07-08 09:46:25 -0700503int phy_ethtool_get_stats(struct phy_device *phydev,
504 struct ethtool_stats *stats, u64 *data)
505{
506 if (!phydev->drv)
507 return -EIO;
508
509 mutex_lock(&phydev->lock);
510 phydev->drv->get_stats(phydev, stats, data);
511 mutex_unlock(&phydev->lock);
512
513 return 0;
514}
515EXPORT_SYMBOL(phy_ethtool_get_stats);
516
Andrew Lunn4069a572020-09-23 00:29:03 +0200517/**
518 * phy_start_cable_test - Start a cable test
519 *
520 * @phydev: the phy_device struct
521 * @extack: extack for reporting useful error messages
522 */
Andrew Lunna68a8132020-05-10 21:12:30 +0200523int phy_start_cable_test(struct phy_device *phydev,
524 struct netlink_ext_ack *extack)
525{
Andrew Lunn4a459bd2020-05-10 21:12:39 +0200526 struct net_device *dev = phydev->attached_dev;
Andrew Lunn1dd3f212020-05-10 21:12:36 +0200527 int err = -ENOMEM;
Andrew Lunna68a8132020-05-10 21:12:30 +0200528
529 if (!(phydev->drv &&
530 phydev->drv->cable_test_start &&
531 phydev->drv->cable_test_get_status)) {
532 NL_SET_ERR_MSG(extack,
533 "PHY driver does not support cable testing");
534 return -EOPNOTSUPP;
535 }
536
537 mutex_lock(&phydev->lock);
538 if (phydev->state == PHY_CABLETEST) {
539 NL_SET_ERR_MSG(extack,
540 "PHY already performing a test");
541 err = -EBUSY;
542 goto out;
543 }
544
545 if (phydev->state < PHY_UP ||
546 phydev->state > PHY_CABLETEST) {
547 NL_SET_ERR_MSG(extack,
548 "PHY not configured. Try setting interface up");
549 err = -EBUSY;
550 goto out;
551 }
552
Andrew Lunn1a644de2020-05-27 00:21:38 +0200553 err = ethnl_cable_test_alloc(phydev, ETHTOOL_MSG_CABLE_TEST_NTF);
Andrew Lunn1dd3f212020-05-10 21:12:36 +0200554 if (err)
555 goto out;
556
Andrew Lunna68a8132020-05-10 21:12:30 +0200557 /* Mark the carrier down until the test is complete */
Doug Bergera3075932020-05-18 15:23:59 -0700558 phy_link_down(phydev);
Andrew Lunna68a8132020-05-10 21:12:30 +0200559
Andrew Lunn4a459bd2020-05-10 21:12:39 +0200560 netif_testing_on(dev);
Andrew Lunna68a8132020-05-10 21:12:30 +0200561 err = phydev->drv->cable_test_start(phydev);
562 if (err) {
Andrew Lunn4a459bd2020-05-10 21:12:39 +0200563 netif_testing_off(dev);
Andrew Lunna68a8132020-05-10 21:12:30 +0200564 phy_link_up(phydev);
Andrew Lunn1dd3f212020-05-10 21:12:36 +0200565 goto out_free;
Andrew Lunna68a8132020-05-10 21:12:30 +0200566 }
567
568 phydev->state = PHY_CABLETEST;
569
Andrew Lunn97c22432020-05-10 21:12:32 +0200570 if (phy_polling_mode(phydev))
571 phy_trigger_machine(phydev);
Andrew Lunn1dd3f212020-05-10 21:12:36 +0200572
573 mutex_unlock(&phydev->lock);
574
575 return 0;
576
577out_free:
578 ethnl_cable_test_free(phydev);
Andrew Lunna68a8132020-05-10 21:12:30 +0200579out:
580 mutex_unlock(&phydev->lock);
581
582 return err;
583}
584EXPORT_SYMBOL(phy_start_cable_test);
585
Andrew Lunn4069a572020-09-23 00:29:03 +0200586/**
587 * phy_start_cable_test_tdr - Start a raw TDR cable test
588 *
589 * @phydev: the phy_device struct
590 * @extack: extack for reporting useful error messages
591 * @config: Configuration of the test to run
592 */
Andrew Lunn1a644de2020-05-27 00:21:38 +0200593int phy_start_cable_test_tdr(struct phy_device *phydev,
Andrew Lunnf2bc8ad2020-05-27 00:21:41 +0200594 struct netlink_ext_ack *extack,
595 const struct phy_tdr_config *config)
Andrew Lunn1a644de2020-05-27 00:21:38 +0200596{
597 struct net_device *dev = phydev->attached_dev;
598 int err = -ENOMEM;
599
600 if (!(phydev->drv &&
601 phydev->drv->cable_test_tdr_start &&
602 phydev->drv->cable_test_get_status)) {
603 NL_SET_ERR_MSG(extack,
604 "PHY driver does not support cable test TDR");
605 return -EOPNOTSUPP;
606 }
607
608 mutex_lock(&phydev->lock);
609 if (phydev->state == PHY_CABLETEST) {
610 NL_SET_ERR_MSG(extack,
611 "PHY already performing a test");
612 err = -EBUSY;
613 goto out;
614 }
615
616 if (phydev->state < PHY_UP ||
617 phydev->state > PHY_CABLETEST) {
618 NL_SET_ERR_MSG(extack,
619 "PHY not configured. Try setting interface up");
620 err = -EBUSY;
621 goto out;
622 }
623
624 err = ethnl_cable_test_alloc(phydev, ETHTOOL_MSG_CABLE_TEST_TDR_NTF);
625 if (err)
626 goto out;
627
628 /* Mark the carrier down until the test is complete */
629 phy_link_down(phydev);
630
631 netif_testing_on(dev);
Andrew Lunnf2bc8ad2020-05-27 00:21:41 +0200632 err = phydev->drv->cable_test_tdr_start(phydev, config);
Andrew Lunn1a644de2020-05-27 00:21:38 +0200633 if (err) {
634 netif_testing_off(dev);
635 phy_link_up(phydev);
636 goto out_free;
637 }
638
639 phydev->state = PHY_CABLETEST;
640
641 if (phy_polling_mode(phydev))
642 phy_trigger_machine(phydev);
643
644 mutex_unlock(&phydev->lock);
645
646 return 0;
647
648out_free:
649 ethnl_cable_test_free(phydev);
650out:
651 mutex_unlock(&phydev->lock);
652
653 return err;
654}
655EXPORT_SYMBOL(phy_start_cable_test_tdr);
656
Oleksij Rempel014068d2021-04-19 15:01:02 +0200657int phy_config_aneg(struct phy_device *phydev)
Heiner Kallweit76299582018-07-12 21:31:54 +0200658{
659 if (phydev->drv->config_aneg)
660 return phydev->drv->config_aneg(phydev);
Camelia Groza34786002018-07-23 18:06:15 +0300661
662 /* Clause 45 PHYs that don't implement Clause 22 registers are not
663 * allowed to call genphy_config_aneg()
664 */
665 if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0)))
Marco Hartmann94acaeb2019-08-21 11:00:46 +0000666 return genphy_c45_config_aneg(phydev);
Camelia Groza34786002018-07-23 18:06:15 +0300667
668 return genphy_config_aneg(phydev);
Heiner Kallweit76299582018-07-12 21:31:54 +0200669}
Oleksij Rempel014068d2021-04-19 15:01:02 +0200670EXPORT_SYMBOL(phy_config_aneg);
Heiner Kallweit76299582018-07-12 21:31:54 +0200671
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800672/**
Heiner Kallweit74a992b2018-11-07 20:45:58 +0100673 * phy_check_link_status - check link status and set state accordingly
674 * @phydev: the phy_device struct
675 *
676 * Description: Check for link and whether autoneg was triggered / is running
677 * and set state accordingly
678 */
679static int phy_check_link_status(struct phy_device *phydev)
680{
681 int err;
682
Heiner Kallweite6e918d2021-01-06 14:03:40 +0100683 lockdep_assert_held(&phydev->lock);
Heiner Kallweit74a992b2018-11-07 20:45:58 +0100684
Jose Abreufe4a7a42019-09-05 13:43:10 +0200685 /* Keep previous state if loopback is enabled because some PHYs
686 * report that Link is Down when loopback is enabled.
687 */
688 if (phydev->loopback_enabled)
689 return 0;
690
Heiner Kallweit74a992b2018-11-07 20:45:58 +0100691 err = phy_read_status(phydev);
692 if (err)
693 return err;
694
695 if (phydev->link && phydev->state != PHY_RUNNING) {
Heiner Kallweit5eee3bb2020-03-20 17:51:38 +0100696 phy_check_downshift(phydev);
Heiner Kallweit74a992b2018-11-07 20:45:58 +0100697 phydev->state = PHY_RUNNING;
698 phy_link_up(phydev);
699 } else if (!phydev->link && phydev->state != PHY_NOLINK) {
700 phydev->state = PHY_NOLINK;
Doug Bergera3075932020-05-18 15:23:59 -0700701 phy_link_down(phydev);
Heiner Kallweit74a992b2018-11-07 20:45:58 +0100702 }
703
704 return 0;
705}
706
707/**
Andrew Lunn707293a2021-10-24 21:48:04 +0200708 * _phy_start_aneg - start auto-negotiation for this PHY device
709 * @phydev: the phy_device struct
710 *
711 * Description: Sanitizes the settings (if we're not autonegotiating
712 * them), and then calls the driver's config_aneg function.
713 * If the PHYCONTROL Layer is operating, we change the state to
714 * reflect the beginning of Auto-negotiation or forcing.
715 */
716static int _phy_start_aneg(struct phy_device *phydev)
717{
718 int err;
719
720 lockdep_assert_held(&phydev->lock);
721
722 if (!phydev->drv)
723 return -EIO;
724
725 if (AUTONEG_DISABLE == phydev->autoneg)
726 phy_sanitize_settings(phydev);
727
728 err = phy_config_aneg(phydev);
729 if (err < 0)
730 return err;
731
732 if (phy_is_started(phydev))
733 err = phy_check_link_status(phydev);
734
735 return err;
736}
737
738/**
Heiner Kallweitc45d7152018-10-15 21:25:13 +0200739 * phy_start_aneg - start auto-negotiation for this PHY device
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800740 * @phydev: the phy_device struct
Andy Fleminge1393452005-08-24 18:46:21 -0500741 *
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800742 * Description: Sanitizes the settings (if we're not autonegotiating
743 * them), and then calls the driver's config_aneg function.
744 * If the PHYCONTROL Layer is operating, we change the state to
745 * reflect the beginning of Auto-negotiation or forcing.
Andy Fleminge1393452005-08-24 18:46:21 -0500746 */
Heiner Kallweitc45d7152018-10-15 21:25:13 +0200747int phy_start_aneg(struct phy_device *phydev)
Andy Fleminge1393452005-08-24 18:46:21 -0500748{
749 int err;
750
Nate Case35b5f6b2008-01-29 10:05:09 -0600751 mutex_lock(&phydev->lock);
Andrew Lunn707293a2021-10-24 21:48:04 +0200752 err = _phy_start_aneg(phydev);
Nate Case35b5f6b2008-01-29 10:05:09 -0600753 mutex_unlock(&phydev->lock);
Alexander Kochetkovf555f342017-04-20 14:00:04 +0300754
Andy Fleminge1393452005-08-24 18:46:21 -0500755 return err;
756}
757EXPORT_SYMBOL(phy_start_aneg);
758
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200759static int phy_poll_aneg_done(struct phy_device *phydev)
760{
761 unsigned int retries = 100;
762 int ret;
763
764 do {
765 msleep(100);
766 ret = phy_aneg_done(phydev);
767 } while (!ret && --retries);
768
769 if (!ret)
770 return -ETIMEDOUT;
771
772 return ret < 0 ? ret : 0;
773}
774
Andrew Lunn64cd92d2021-10-24 21:48:03 +0200775int phy_ethtool_ksettings_set(struct phy_device *phydev,
776 const struct ethtool_link_ksettings *cmd)
777{
778 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
779 u8 autoneg = cmd->base.autoneg;
780 u8 duplex = cmd->base.duplex;
781 u32 speed = cmd->base.speed;
782
783 if (cmd->base.phy_address != phydev->mdio.addr)
784 return -EINVAL;
785
786 linkmode_copy(advertising, cmd->link_modes.advertising);
787
788 /* We make sure that we don't pass unsupported values in to the PHY */
789 linkmode_and(advertising, advertising, phydev->supported);
790
791 /* Verify the settings we care about. */
792 if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE)
793 return -EINVAL;
794
795 if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising))
796 return -EINVAL;
797
798 if (autoneg == AUTONEG_DISABLE &&
799 ((speed != SPEED_1000 &&
800 speed != SPEED_100 &&
801 speed != SPEED_10) ||
802 (duplex != DUPLEX_HALF &&
803 duplex != DUPLEX_FULL)))
804 return -EINVAL;
805
Andrew Lunnaf1a02a2021-10-24 21:48:05 +0200806 mutex_lock(&phydev->lock);
Andrew Lunn64cd92d2021-10-24 21:48:03 +0200807 phydev->autoneg = autoneg;
808
809 if (autoneg == AUTONEG_DISABLE) {
810 phydev->speed = speed;
811 phydev->duplex = duplex;
812 }
813
814 linkmode_copy(phydev->advertising, advertising);
815
816 linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
817 phydev->advertising, autoneg == AUTONEG_ENABLE);
818
819 phydev->master_slave_set = cmd->base.master_slave_cfg;
820 phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl;
821
822 /* Restart the PHY */
Heiner Kallweita4db9052021-11-03 22:08:28 +0100823 if (phy_is_started(phydev)) {
824 phydev->state = PHY_UP;
825 phy_trigger_machine(phydev);
826 } else {
827 _phy_start_aneg(phydev);
828 }
Andrew Lunn64cd92d2021-10-24 21:48:03 +0200829
Andrew Lunnaf1a02a2021-10-24 21:48:05 +0200830 mutex_unlock(&phydev->lock);
Andrew Lunn64cd92d2021-10-24 21:48:03 +0200831 return 0;
832}
833EXPORT_SYMBOL(phy_ethtool_ksettings_set);
834
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200835/**
836 * phy_speed_down - set speed to lowest speed supported by both link partners
837 * @phydev: the phy_device struct
838 * @sync: perform action synchronously
839 *
840 * Description: Typically used to save energy when waiting for a WoL packet
841 *
842 * WARNING: Setting sync to false may cause the system being unable to suspend
843 * in case the PHY generates an interrupt when finishing the autonegotiation.
844 * This interrupt may wake up the system immediately after suspend.
845 * Therefore use sync = false only if you're sure it's safe with the respective
846 * network chip.
847 */
848int phy_speed_down(struct phy_device *phydev, bool sync)
849{
Heiner Kallweit65b27992019-08-12 23:52:19 +0200850 __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp);
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200851 int ret;
852
853 if (phydev->autoneg != AUTONEG_ENABLE)
854 return 0;
855
Heiner Kallweit65b27992019-08-12 23:52:19 +0200856 linkmode_copy(adv_tmp, phydev->advertising);
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200857
Heiner Kallweit65b27992019-08-12 23:52:19 +0200858 ret = phy_speed_down_core(phydev);
859 if (ret)
860 return ret;
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100861
Heiner Kallweit65b27992019-08-12 23:52:19 +0200862 linkmode_copy(phydev->adv_old, adv_tmp);
863
864 if (linkmode_equal(phydev->advertising, adv_tmp))
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200865 return 0;
866
867 ret = phy_config_aneg(phydev);
868 if (ret)
869 return ret;
870
871 return sync ? phy_poll_aneg_done(phydev) : 0;
872}
873EXPORT_SYMBOL_GPL(phy_speed_down);
874
875/**
876 * phy_speed_up - (re)set advertised speeds to all supported speeds
877 * @phydev: the phy_device struct
878 *
879 * Description: Used to revert the effect of phy_speed_down
880 */
881int phy_speed_up(struct phy_device *phydev)
882{
Heiner Kallweit65b27992019-08-12 23:52:19 +0200883 __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp);
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200884
885 if (phydev->autoneg != AUTONEG_ENABLE)
886 return 0;
887
Heiner Kallweit65b27992019-08-12 23:52:19 +0200888 if (linkmode_empty(phydev->adv_old))
889 return 0;
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200890
Heiner Kallweit65b27992019-08-12 23:52:19 +0200891 linkmode_copy(adv_tmp, phydev->advertising);
892 linkmode_copy(phydev->advertising, phydev->adv_old);
893 linkmode_zero(phydev->adv_old);
Andrew Lunn3c1bcc82018-11-10 23:43:33 +0100894
Heiner Kallweit65b27992019-08-12 23:52:19 +0200895 if (linkmode_equal(phydev->advertising, adv_tmp))
Heiner Kallweit2b9672d2018-07-12 21:32:53 +0200896 return 0;
897
898 return phy_config_aneg(phydev);
899}
900EXPORT_SYMBOL_GPL(phy_speed_up);
901
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800902/**
903 * phy_start_machine - start PHY state machine tracking
904 * @phydev: the phy_device struct
Andy Fleming00db8182005-07-30 19:31:23 -0400905 *
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800906 * Description: The PHY infrastructure can run a state machine
Andy Fleming00db8182005-07-30 19:31:23 -0400907 * which tracks whether the PHY is starting up, negotiating,
Florian Fainellifb5e7606b2017-07-26 12:05:38 -0700908 * etc. This function starts the delayed workqueue which tracks
909 * the state of the PHY. If you want to maintain your own state machine,
Sergei Shtylyov29935ae2014-01-05 03:27:17 +0300910 * do not call this function.
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800911 */
Sergei Shtylyov29935ae2014-01-05 03:27:17 +0300912void phy_start_machine(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400913{
Heiner Kallweit6384e482018-10-11 19:31:47 +0200914 phy_trigger_machine(phydev);
Andy Fleming00db8182005-07-30 19:31:23 -0400915}
Russell King5e5758d2017-07-25 15:03:03 +0100916EXPORT_SYMBOL_GPL(phy_start_machine);
Andy Fleming00db8182005-07-30 19:31:23 -0400917
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800918/**
919 * phy_stop_machine - stop the PHY state machine tracking
920 * @phydev: target phy_device struct
Andy Fleming00db8182005-07-30 19:31:23 -0400921 *
Florian Fainellifb5e7606b2017-07-26 12:05:38 -0700922 * Description: Stops the state machine delayed workqueue, sets the
923 * state to UP (unless it wasn't up yet). This function must be
924 * called BEFORE phy_detach.
Andy Fleming00db8182005-07-30 19:31:23 -0400925 */
926void phy_stop_machine(struct phy_device *phydev)
927{
Marcin Slusarza390d1f2009-03-13 15:41:19 -0700928 cancel_delayed_work_sync(&phydev->state_queue);
Andy Fleming00db8182005-07-30 19:31:23 -0400929
Nate Case35b5f6b2008-01-29 10:05:09 -0600930 mutex_lock(&phydev->lock);
Heiner Kallweita2fc9d72019-02-13 20:11:40 +0100931 if (phy_is_started(phydev))
Andy Fleming00db8182005-07-30 19:31:23 -0400932 phydev->state = PHY_UP;
Nate Case35b5f6b2008-01-29 10:05:09 -0600933 mutex_unlock(&phydev->lock);
Andy Fleming00db8182005-07-30 19:31:23 -0400934}
935
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800936/**
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800937 * phy_error - enter HALTED state for this PHY device
938 * @phydev: target phy_device struct
Andy Fleming00db8182005-07-30 19:31:23 -0400939 *
940 * Moves the PHY to the HALTED state in response to a read
941 * or write error, and tells the controller the link is down.
942 * Must not be called from interrupt context, or while the
943 * phydev->lock is held.
944 */
Ioana Ciornei293e9a32020-11-01 14:50:56 +0200945void phy_error(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400946{
Heiner Kallweitfa7b28c2018-12-16 19:18:26 +0100947 WARN_ON(1);
948
Nate Case35b5f6b2008-01-29 10:05:09 -0600949 mutex_lock(&phydev->lock);
Andy Fleming00db8182005-07-30 19:31:23 -0400950 phydev->state = PHY_HALTED;
Nate Case35b5f6b2008-01-29 10:05:09 -0600951 mutex_unlock(&phydev->lock);
Andrew Lunn3c293f42016-10-12 22:14:53 +0200952
Heiner Kallweit9f2959b2018-09-28 08:51:09 +0200953 phy_trigger_machine(phydev);
Andy Fleming00db8182005-07-30 19:31:23 -0400954}
Ioana Ciornei293e9a32020-11-01 14:50:56 +0200955EXPORT_SYMBOL(phy_error);
Andy Fleming00db8182005-07-30 19:31:23 -0400956
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800957/**
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800958 * phy_disable_interrupts - Disable the PHY interrupts from the PHY side
959 * @phydev: target phy_device struct
960 */
Jisheng Zhang3dd4ef12020-06-24 15:58:24 +0800961int phy_disable_interrupts(struct phy_device *phydev)
Andy Fleming00db8182005-07-30 19:31:23 -0400962{
Andy Fleming00db8182005-07-30 19:31:23 -0400963 /* Disable PHY interrupts */
Ioana Ciornei6527b932020-11-23 17:38:17 +0200964 return phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
Andy Fleming00db8182005-07-30 19:31:23 -0400965}
Andy Fleminge1393452005-08-24 18:46:21 -0500966
Randy Dunlapb3df0da2007-03-06 02:41:48 -0800967/**
Brad Mouringa2c054a2018-03-08 16:23:03 -0600968 * phy_interrupt - PHY interrupt handler
969 * @irq: interrupt line
970 * @phy_dat: phy_device pointer
971 *
Heiner Kallweit34d884e2018-11-09 18:58:01 +0100972 * Description: Handle PHY interrupt
Brad Mouringa2c054a2018-03-08 16:23:03 -0600973 */
974static irqreturn_t phy_interrupt(int irq, void *phy_dat)
975{
976 struct phy_device *phydev = phy_dat;
Heiner Kallweit9010f9d2020-03-16 22:32:33 +0100977 struct phy_driver *drv = phydev->drv;
Francesco Dolcini91a7cda2022-05-06 08:08:15 +0200978 irqreturn_t ret;
Brad Mouringa2c054a2018-03-08 16:23:03 -0600979
Lukas Wunner1758bde2022-06-28 12:15:08 +0200980 /* Wakeup interrupts may occur during a system sleep transition.
981 * Postpone handling until the PHY has resumed.
982 */
983 if (IS_ENABLED(CONFIG_PM_SLEEP) && phydev->irq_suspended) {
984 struct net_device *netdev = phydev->attached_dev;
985
986 if (netdev) {
987 struct device *parent = netdev->dev.parent;
988
989 if (netdev->wol_enabled)
990 pm_system_wakeup();
991 else if (device_may_wakeup(&netdev->dev))
992 pm_wakeup_dev_event(&netdev->dev, 0, true);
993 else if (parent && device_may_wakeup(parent))
994 pm_wakeup_dev_event(parent, 0, true);
995 }
996
997 phydev->irq_rerun = 1;
998 disable_irq_nosync(irq);
999 return IRQ_HANDLED;
1000 }
1001
Francesco Dolcini91a7cda2022-05-06 08:08:15 +02001002 mutex_lock(&phydev->lock);
1003 ret = drv->handle_interrupt(phydev);
1004 mutex_unlock(&phydev->lock);
1005
1006 return ret;
Brad Mouringa2c054a2018-03-08 16:23:03 -06001007}
1008
1009/**
1010 * phy_enable_interrupts - Enable the interrupts from the PHY side
1011 * @phydev: target phy_device struct
1012 */
1013static int phy_enable_interrupts(struct phy_device *phydev)
1014{
Brad Mouringa2c054a2018-03-08 16:23:03 -06001015 return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
1016}
1017
1018/**
Heiner Kallweit07b09282019-05-30 15:09:15 +02001019 * phy_request_interrupt - request and enable interrupt for a PHY device
Randy Dunlapb3df0da2007-03-06 02:41:48 -08001020 * @phydev: target phy_device struct
Andy Fleminge1393452005-08-24 18:46:21 -05001021 *
Heiner Kallweit07b09282019-05-30 15:09:15 +02001022 * Description: Request and enable the interrupt for the given PHY.
Randy Dunlapb3df0da2007-03-06 02:41:48 -08001023 * If this fails, then we set irq to PHY_POLL.
Andy Fleminge1393452005-08-24 18:46:21 -05001024 * This should only be called with a valid IRQ number.
1025 */
Heiner Kallweit434a4312019-01-23 07:31:58 +01001026void phy_request_interrupt(struct phy_device *phydev)
Andy Fleminge1393452005-08-24 18:46:21 -05001027{
Heiner Kallweit434a4312019-01-23 07:31:58 +01001028 int err;
Andy Fleminge1393452005-08-24 18:46:21 -05001029
Heiner Kallweit434a4312019-01-23 07:31:58 +01001030 err = request_threaded_irq(phydev->irq, NULL, phy_interrupt,
1031 IRQF_ONESHOT | IRQF_SHARED,
1032 phydev_name(phydev), phydev);
1033 if (err) {
1034 phydev_warn(phydev, "Error %d requesting IRQ %d, falling back to polling\n",
1035 err, phydev->irq);
1036 phydev->irq = PHY_POLL;
Heiner Kallweit07b09282019-05-30 15:09:15 +02001037 } else {
1038 if (phy_enable_interrupts(phydev)) {
1039 phydev_warn(phydev, "Can't enable interrupt, falling back to polling\n");
1040 phy_free_interrupt(phydev);
1041 phydev->irq = PHY_POLL;
1042 }
Heiner Kallweit434a4312019-01-23 07:31:58 +01001043 }
Andy Fleminge1393452005-08-24 18:46:21 -05001044}
Heiner Kallweit434a4312019-01-23 07:31:58 +01001045EXPORT_SYMBOL(phy_request_interrupt);
Andy Fleminge1393452005-08-24 18:46:21 -05001046
Randy Dunlapb3df0da2007-03-06 02:41:48 -08001047/**
Heiner Kallweit07b09282019-05-30 15:09:15 +02001048 * phy_free_interrupt - disable and free interrupt for a PHY device
1049 * @phydev: target phy_device struct
1050 *
1051 * Description: Disable and free the interrupt for the given PHY.
1052 * This should only be called with a valid IRQ number.
1053 */
1054void phy_free_interrupt(struct phy_device *phydev)
1055{
1056 phy_disable_interrupts(phydev);
1057 free_irq(phydev->irq, phydev);
1058}
1059EXPORT_SYMBOL(phy_free_interrupt);
1060
1061/**
Randy Dunlapb3df0da2007-03-06 02:41:48 -08001062 * phy_stop - Bring down the PHY link, and stop checking the status
1063 * @phydev: target phy_device struct
1064 */
Andy Fleminge1393452005-08-24 18:46:21 -05001065void phy_stop(struct phy_device *phydev)
1066{
Andrew Lunn4a459bd2020-05-10 21:12:39 +02001067 struct net_device *dev = phydev->attached_dev;
1068
Florian Fainelli5116a8a2020-09-16 20:43:10 -07001069 if (!phy_is_started(phydev) && phydev->state != PHY_DOWN) {
Heiner Kallweit2b3e88e2018-12-16 18:30:14 +01001070 WARN(1, "called from state %s\n",
1071 phy_state_to_str(phydev->state));
Heiner Kallweit2b3e88e2018-12-16 18:30:14 +01001072 return;
1073 }
Andy Fleminge1393452005-08-24 18:46:21 -05001074
Heiner Kallweita2fc9d72019-02-13 20:11:40 +01001075 mutex_lock(&phydev->lock);
1076
Andrew Lunn4a459bd2020-05-10 21:12:39 +02001077 if (phydev->state == PHY_CABLETEST) {
Andrew Lunna68a8132020-05-10 21:12:30 +02001078 phy_abort_cable_test(phydev);
Andrew Lunn4a459bd2020-05-10 21:12:39 +02001079 netif_testing_off(dev);
1080 }
Andrew Lunna68a8132020-05-10 21:12:30 +02001081
Russell King298e54f2019-11-15 19:56:51 +00001082 if (phydev->sfp_bus)
1083 sfp_upstream_stop(phydev->sfp_bus);
1084
Maciej W. Rozycki6daf6532007-09-28 22:42:15 -07001085 phydev->state = PHY_HALTED;
1086
Nate Case35b5f6b2008-01-29 10:05:09 -06001087 mutex_unlock(&phydev->lock);
Maciej W. Rozycki3c3070d72006-10-03 16:18:35 +01001088
Heiner Kallweite8cfd9d2018-09-18 21:56:32 +02001089 phy_state_machine(&phydev->state_queue.work);
Heiner Kallweitcbfd12b2019-01-17 20:08:39 +01001090 phy_stop_machine(phydev);
Heiner Kallweite8cfd9d2018-09-18 21:56:32 +02001091
Sergei Shtylyov2f53e902014-01-05 03:17:06 +03001092 /* Cannot call flush_scheduled_work() here as desired because
Heiner Kallweit34d884e2018-11-09 18:58:01 +01001093 * of rtnl_lock(), but PHY_HALTED shall guarantee irq handler
Maciej W. Rozycki3c3070d72006-10-03 16:18:35 +01001094 * will not reenable interrupts.
1095 */
Andy Fleminge1393452005-08-24 18:46:21 -05001096}
Sergei Shtylyov2f53e902014-01-05 03:17:06 +03001097EXPORT_SYMBOL(phy_stop);
Andy Fleminge1393452005-08-24 18:46:21 -05001098
Randy Dunlapb3df0da2007-03-06 02:41:48 -08001099/**
1100 * phy_start - start or restart a PHY device
1101 * @phydev: target phy_device struct
Andy Fleminge1393452005-08-24 18:46:21 -05001102 *
Randy Dunlapb3df0da2007-03-06 02:41:48 -08001103 * Description: Indicates the attached device's readiness to
Andy Fleminge1393452005-08-24 18:46:21 -05001104 * handle PHY-related work. Used during startup to start the
1105 * PHY, and after a call to phy_stop() to resume operation.
1106 * Also used to indicate the MDIO bus has cleared an error
1107 * condition.
1108 */
1109void phy_start(struct phy_device *phydev)
1110{
Nate Case35b5f6b2008-01-29 10:05:09 -06001111 mutex_lock(&phydev->lock);
Andy Fleminge1393452005-08-24 18:46:21 -05001112
Heiner Kallweit21796262019-01-23 07:30:38 +01001113 if (phydev->state != PHY_READY && phydev->state != PHY_HALTED) {
1114 WARN(1, "called from state %s\n",
1115 phy_state_to_str(phydev->state));
1116 goto out;
1117 }
1118
Russell King298e54f2019-11-15 19:56:51 +00001119 if (phydev->sfp_bus)
1120 sfp_upstream_start(phydev->sfp_bus);
1121
Heiner Kallweit9e573cf2019-01-23 07:31:23 +01001122 /* if phy was suspended, bring the physical link up again */
1123 __phy_resume(phydev);
Russell Kingf5e64032017-12-12 10:45:36 +00001124
Heiner Kallweitf24098f2019-05-01 22:14:21 +02001125 phydev->state = PHY_UP;
Heiner Kallweit9e573cf2019-01-23 07:31:23 +01001126
1127 phy_start_machine(phydev);
Heiner Kallweit21796262019-01-23 07:30:38 +01001128out:
Nate Case35b5f6b2008-01-29 10:05:09 -06001129 mutex_unlock(&phydev->lock);
Andy Fleminge1393452005-08-24 18:46:21 -05001130}
Andy Fleminge1393452005-08-24 18:46:21 -05001131EXPORT_SYMBOL(phy_start);
Jeff Garzik67c4f3f2005-08-11 02:07:25 -04001132
Nate Case35b5f6b2008-01-29 10:05:09 -06001133/**
1134 * phy_state_machine - Handle the state machine
1135 * @work: work_struct that describes the work to be done
Nate Case35b5f6b2008-01-29 10:05:09 -06001136 */
Anton Vorontsov4f9c85a2010-01-18 05:37:16 +00001137void phy_state_machine(struct work_struct *work)
Andy Fleming00db8182005-07-30 19:31:23 -04001138{
Jean Delvarebf6aede2009-04-02 16:56:54 -07001139 struct delayed_work *dwork = to_delayed_work(work);
Nate Case35b5f6b2008-01-29 10:05:09 -06001140 struct phy_device *phydev =
Marcin Slusarza390d1f2009-03-13 15:41:19 -07001141 container_of(dwork, struct phy_device, state_queue);
Andrew Lunn4a459bd2020-05-10 21:12:39 +02001142 struct net_device *dev = phydev->attached_dev;
Tim Bealec15e10e2015-05-18 15:38:38 +12001143 bool needs_aneg = false, do_suspend = false;
Florian Fainelli3e2186e2015-05-16 10:17:56 -07001144 enum phy_state old_state;
Andrew Lunna68a8132020-05-10 21:12:30 +02001145 bool finished = false;
Andy Fleming00db8182005-07-30 19:31:23 -04001146 int err = 0;
1147
Nate Case35b5f6b2008-01-29 10:05:09 -06001148 mutex_lock(&phydev->lock);
Andy Fleming00db8182005-07-30 19:31:23 -04001149
Florian Fainelli3e2186e2015-05-16 10:17:56 -07001150 old_state = phydev->state;
1151
Florian Fainellie1093742013-12-17 21:38:12 -08001152 switch (phydev->state) {
1153 case PHY_DOWN:
Florian Fainellie1093742013-12-17 21:38:12 -08001154 case PHY_READY:
Florian Fainellie1093742013-12-17 21:38:12 -08001155 break;
1156 case PHY_UP:
Zhangfei Gao6e14a5ee2014-05-15 13:35:34 +08001157 needs_aneg = true;
Florian Fainellie1093742013-12-17 21:38:12 -08001158
Florian Fainellie1093742013-12-17 21:38:12 -08001159 break;
1160 case PHY_NOLINK:
Heiner Kallweitc8e977b2018-11-07 20:47:53 +01001161 case PHY_RUNNING:
Heiner Kallweitc8e977b2018-11-07 20:47:53 +01001162 err = phy_check_link_status(phydev);
Florian Fainellie1093742013-12-17 21:38:12 -08001163 break;
Andrew Lunna68a8132020-05-10 21:12:30 +02001164 case PHY_CABLETEST:
1165 err = phydev->drv->cable_test_get_status(phydev, &finished);
1166 if (err) {
1167 phy_abort_cable_test(phydev);
Andrew Lunn4a459bd2020-05-10 21:12:39 +02001168 netif_testing_off(dev);
Andrew Lunna68a8132020-05-10 21:12:30 +02001169 needs_aneg = true;
1170 phydev->state = PHY_UP;
1171 break;
1172 }
1173
1174 if (finished) {
Andrew Lunn1dd3f212020-05-10 21:12:36 +02001175 ethnl_cable_test_finished(phydev);
Andrew Lunn4a459bd2020-05-10 21:12:39 +02001176 netif_testing_off(dev);
Andrew Lunna68a8132020-05-10 21:12:30 +02001177 needs_aneg = true;
1178 phydev->state = PHY_UP;
1179 }
1180 break;
Florian Fainellie1093742013-12-17 21:38:12 -08001181 case PHY_HALTED:
1182 if (phydev->link) {
1183 phydev->link = 0;
Doug Bergera3075932020-05-18 15:23:59 -07001184 phy_link_down(phydev);
Florian Fainellie1093742013-12-17 21:38:12 -08001185 }
Jian Shen95fb8bb2019-08-28 09:34:47 +08001186 do_suspend = true;
Florian Fainellie1093742013-12-17 21:38:12 -08001187 break;
Andy Fleming00db8182005-07-30 19:31:23 -04001188 }
1189
Nate Case35b5f6b2008-01-29 10:05:09 -06001190 mutex_unlock(&phydev->lock);
Andy Fleming00db8182005-07-30 19:31:23 -04001191
1192 if (needs_aneg)
Heiner Kallweitc45d7152018-10-15 21:25:13 +02001193 err = phy_start_aneg(phydev);
Zhangfei Gao6e14a5ee2014-05-15 13:35:34 +08001194 else if (do_suspend)
Sebastian Hesselbarthbe9dad12013-12-13 10:20:29 +01001195 phy_suspend(phydev);
1196
Oleksij Rempel06edf1a2021-06-07 10:27:26 +02001197 if (err == -ENODEV)
1198 return;
1199
Andy Fleming00db8182005-07-30 19:31:23 -04001200 if (err < 0)
1201 phy_error(phydev);
1202
Heiner Kallweit5c5f6262019-03-19 19:56:51 +01001203 if (old_state != phydev->state) {
Marc Gonzalez6a95bef2017-07-28 13:18:30 +02001204 phydev_dbg(phydev, "PHY state change %s -> %s\n",
1205 phy_state_to_str(old_state),
1206 phy_state_to_str(phydev->state));
Heiner Kallweit5c5f6262019-03-19 19:56:51 +01001207 if (phydev->drv && phydev->drv->link_change_notify)
1208 phydev->drv->link_change_notify(phydev);
1209 }
Florian Fainelli3e2186e2015-05-16 10:17:56 -07001210
Florian Fainellid5c3d842016-01-18 19:33:06 -08001211 /* Only re-schedule a PHY state machine change if we are polling the
Heiner Kallweit93e89902021-02-14 15:16:23 +01001212 * PHY, if PHY_MAC_INTERRUPT is set, then we will be moving
Heiner Kallweit075ddeb2018-09-20 22:34:25 +02001213 * between states from phy_mac_interrupt().
1214 *
1215 * In state PHY_HALTED the PHY gets suspended, so rescheduling the
1216 * state machine would be pointless and possibly error prone when
1217 * called from phy_disconnect() synchronously.
Florian Fainellid5c3d842016-01-18 19:33:06 -08001218 */
Heiner Kallweita2004902019-02-13 20:12:54 +01001219 mutex_lock(&phydev->lock);
Heiner Kallweit2b3e88e2018-12-16 18:30:14 +01001220 if (phy_polling_mode(phydev) && phy_is_started(phydev))
Heiner Kallweit9f2959b2018-09-28 08:51:09 +02001221 phy_queue_state_machine(phydev, PHY_STATE_TIME);
Heiner Kallweita2004902019-02-13 20:12:54 +01001222 mutex_unlock(&phydev->lock);
Nate Case35b5f6b2008-01-29 10:05:09 -06001223}
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001224
Andrew Lunn664fcf12016-10-16 19:56:51 +02001225/**
1226 * phy_mac_interrupt - MAC says the link has changed
1227 * @phydev: phy_device struct with changed link
Andrew Lunn664fcf12016-10-16 19:56:51 +02001228 *
Heiner Kallweit28b2e0d2018-01-10 21:21:31 +01001229 * The MAC layer is able to indicate there has been a change in the PHY link
1230 * status. Trigger the state machine and work a work queue.
Andrew Lunn664fcf12016-10-16 19:56:51 +02001231 */
Heiner Kallweit28b2e0d2018-01-10 21:21:31 +01001232void phy_mac_interrupt(struct phy_device *phydev)
Florian Fainelli5ea94e72013-05-19 22:53:43 +00001233{
Florian Fainellideccd16f92016-01-18 19:33:07 -08001234 /* Trigger a state machine change */
Heiner Kallweitd73a2152018-11-09 18:56:52 +01001235 phy_trigger_machine(phydev);
Florian Fainelli5ea94e72013-05-19 22:53:43 +00001236}
1237EXPORT_SYMBOL(phy_mac_interrupt);
1238
Andrew Lunn3c1bcc82018-11-10 23:43:33 +01001239static void mmd_eee_adv_to_linkmode(unsigned long *advertising, u16 eee_adv)
1240{
1241 linkmode_zero(advertising);
1242
1243 if (eee_adv & MDIO_EEE_100TX)
1244 linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
1245 advertising);
1246 if (eee_adv & MDIO_EEE_1000T)
1247 linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
1248 advertising);
1249 if (eee_adv & MDIO_EEE_10GT)
1250 linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
1251 advertising);
1252 if (eee_adv & MDIO_EEE_1000KX)
1253 linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
1254 advertising);
1255 if (eee_adv & MDIO_EEE_10GKX4)
1256 linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
1257 advertising);
1258 if (eee_adv & MDIO_EEE_10GKR)
1259 linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
1260 advertising);
1261}
1262
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001263/**
1264 * phy_init_eee - init and check the EEE feature
1265 * @phydev: target phy_device struct
1266 * @clk_stop_enable: PHY may stop the clock during LPI
1267 *
1268 * Description: it checks if the Energy-Efficient Ethernet (EEE)
1269 * is supported by looking at the MMD registers 3.20 and 7.60/61
1270 * and it programs the MMD register 3.0 setting the "Clock stop enable"
1271 * bit if required.
1272 */
1273int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable)
1274{
Florian Fainelli25149ef2017-02-17 16:07:34 -08001275 if (!phydev->drv)
1276 return -EIO;
1277
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001278 /* According to 802.3az,the EEE is supported only in full duplex-mode.
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001279 */
Russell King32d75142017-03-31 10:37:18 +01001280 if (phydev->duplex == DUPLEX_FULL) {
Andrew Lunn3c1bcc82018-11-10 23:43:33 +01001281 __ETHTOOL_DECLARE_LINK_MODE_MASK(common);
1282 __ETHTOOL_DECLARE_LINK_MODE_MASK(lp);
1283 __ETHTOOL_DECLARE_LINK_MODE_MASK(adv);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001284 int eee_lp, eee_cap, eee_adv;
Bjorn Helgaas4ae6e502014-03-04 17:35:44 -07001285 int status;
Andrew Lunn3c1bcc82018-11-10 23:43:33 +01001286 u32 cap;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001287
1288 /* Read phy status to properly get the right settings */
1289 status = phy_read_status(phydev);
1290 if (status)
1291 return status;
1292
1293 /* First check if the EEE ability is supported */
Russell Kinga6d99fc2017-03-21 16:36:53 +00001294 eee_cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001295 if (eee_cap <= 0)
1296 goto eee_exit_err;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001297
Allan, Bruce Wb32607d2012-08-20 04:55:29 +00001298 cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001299 if (!cap)
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001300 goto eee_exit_err;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001301
1302 /* Check which link settings negotiated and verify it in
1303 * the EEE advertising registers.
1304 */
Russell Kinga6d99fc2017-03-21 16:36:53 +00001305 eee_lp = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001306 if (eee_lp <= 0)
1307 goto eee_exit_err;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001308
Russell Kinga6d99fc2017-03-21 16:36:53 +00001309 eee_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001310 if (eee_adv <= 0)
1311 goto eee_exit_err;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001312
Andrew Lunn3c1bcc82018-11-10 23:43:33 +01001313 mmd_eee_adv_to_linkmode(adv, eee_adv);
1314 mmd_eee_adv_to_linkmode(lp, eee_lp);
1315 linkmode_and(common, adv, lp);
1316
1317 if (!phy_check_valid(phydev->speed, phydev->duplex, common))
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001318 goto eee_exit_err;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001319
Heiner Kallweitb52c0182019-02-06 07:38:43 +01001320 if (clk_stop_enable)
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001321 /* Configure the PHY to stop receiving xMII
1322 * clock while it is signaling LPI.
1323 */
Heiner Kallweitb52c0182019-02-06 07:38:43 +01001324 phy_set_bits_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1,
1325 MDIO_PCS_CTRL1_CLKSTOP_EN);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001326
Sergei Shtylyove62a7682014-01-05 03:21:52 +03001327 return 0; /* EEE supported */
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001328 }
Giuseppe CAVALLARO7a4cecf2014-08-26 09:26:52 +02001329eee_exit_err:
Sergei Shtylyove62a7682014-01-05 03:21:52 +03001330 return -EPROTONOSUPPORT;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001331}
1332EXPORT_SYMBOL(phy_init_eee);
1333
1334/**
1335 * phy_get_eee_err - report the EEE wake error count
1336 * @phydev: target phy_device struct
1337 *
1338 * Description: it is to report the number of time where the PHY
1339 * failed to complete its normal wake sequence.
1340 */
1341int phy_get_eee_err(struct phy_device *phydev)
1342{
Florian Fainelli25149ef2017-02-17 16:07:34 -08001343 if (!phydev->drv)
1344 return -EIO;
1345
Russell Kinga6d99fc2017-03-21 16:36:53 +00001346 return phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001347}
1348EXPORT_SYMBOL(phy_get_eee_err);
1349
1350/**
1351 * phy_ethtool_get_eee - get EEE supported and status
1352 * @phydev: target phy_device struct
1353 * @data: ethtool_eee data
1354 *
1355 * Description: it reportes the Supported/Advertisement/LP Advertisement
1356 * capabilities.
1357 */
1358int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data)
1359{
1360 int val;
1361
Florian Fainelli25149ef2017-02-17 16:07:34 -08001362 if (!phydev->drv)
1363 return -EIO;
1364
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001365 /* Get Supported EEE */
Russell Kinga6d99fc2017-03-21 16:36:53 +00001366 val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001367 if (val < 0)
1368 return val;
Allan, Bruce Wb32607d2012-08-20 04:55:29 +00001369 data->supported = mmd_eee_cap_to_ethtool_sup_t(val);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001370
1371 /* Get advertisement EEE */
Russell Kinga6d99fc2017-03-21 16:36:53 +00001372 val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001373 if (val < 0)
1374 return val;
Allan, Bruce Wb32607d2012-08-20 04:55:29 +00001375 data->advertised = mmd_eee_adv_to_ethtool_adv_t(val);
Heiner Kallweitd1420bb2018-11-27 22:30:14 +01001376 data->eee_enabled = !!data->advertised;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001377
1378 /* Get LP advertisement EEE */
Russell Kinga6d99fc2017-03-21 16:36:53 +00001379 val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001380 if (val < 0)
1381 return val;
Allan, Bruce Wb32607d2012-08-20 04:55:29 +00001382 data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val);
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001383
Heiner Kallweitd1420bb2018-11-27 22:30:14 +01001384 data->eee_active = !!(data->advertised & data->lp_advertised);
1385
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001386 return 0;
1387}
1388EXPORT_SYMBOL(phy_ethtool_get_eee);
1389
1390/**
1391 * phy_ethtool_set_eee - set EEE supported and status
1392 * @phydev: target phy_device struct
1393 * @data: ethtool_eee data
1394 *
1395 * Description: it is to program the Advertisement EEE register.
1396 */
1397int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data)
1398{
Heiner Kallweitd1420bb2018-11-27 22:30:14 +01001399 int cap, old_adv, adv = 0, ret;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001400
Florian Fainelli25149ef2017-02-17 16:07:34 -08001401 if (!phydev->drv)
1402 return -EIO;
1403
Russell King83ea0672017-03-31 10:37:07 +01001404 /* Get Supported EEE */
1405 cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
1406 if (cap < 0)
1407 return cap;
1408
Russell Kingf75abeb2017-03-31 10:37:12 +01001409 old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
1410 if (old_adv < 0)
1411 return old_adv;
1412
Heiner Kallweitd1420bb2018-11-27 22:30:14 +01001413 if (data->eee_enabled) {
1414 adv = !data->advertised ? cap :
1415 ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap;
1416 /* Mask prohibited EEE modes */
1417 adv &= ~phydev->eee_broken_modes;
1418 }
jbrunetd853d142016-11-28 10:46:46 +01001419
Russell Kingf75abeb2017-03-31 10:37:12 +01001420 if (old_adv != adv) {
1421 ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv);
1422 if (ret < 0)
1423 return ret;
1424
1425 /* Restart autonegotiation so the new modes get sent to the
1426 * link partner.
1427 */
Heiner Kallweit9de5d232020-05-12 21:45:53 +02001428 if (phydev->autoneg == AUTONEG_ENABLE) {
1429 ret = phy_restart_aneg(phydev);
1430 if (ret < 0)
1431 return ret;
1432 }
Russell Kingf75abeb2017-03-31 10:37:12 +01001433 }
1434
1435 return 0;
Giuseppe CAVALLAROa59a4d12012-06-27 21:14:38 +00001436}
1437EXPORT_SYMBOL(phy_ethtool_set_eee);
Michael Stapelberg42e836e2013-03-11 13:56:44 +00001438
Andrew Lunn4069a572020-09-23 00:29:03 +02001439/**
1440 * phy_ethtool_set_wol - Configure Wake On LAN
1441 *
1442 * @phydev: target phy_device struct
1443 * @wol: Configuration requested
1444 */
Michael Stapelberg42e836e2013-03-11 13:56:44 +00001445int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
1446{
Florian Fainelli25149ef2017-02-17 16:07:34 -08001447 if (phydev->drv && phydev->drv->set_wol)
Michael Stapelberg42e836e2013-03-11 13:56:44 +00001448 return phydev->drv->set_wol(phydev, wol);
1449
1450 return -EOPNOTSUPP;
1451}
1452EXPORT_SYMBOL(phy_ethtool_set_wol);
1453
Andrew Lunn4069a572020-09-23 00:29:03 +02001454/**
1455 * phy_ethtool_get_wol - Get the current Wake On LAN configuration
1456 *
1457 * @phydev: target phy_device struct
1458 * @wol: Store the current configuration here
1459 */
Michael Stapelberg42e836e2013-03-11 13:56:44 +00001460void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
1461{
Florian Fainelli25149ef2017-02-17 16:07:34 -08001462 if (phydev->drv && phydev->drv->get_wol)
Michael Stapelberg42e836e2013-03-11 13:56:44 +00001463 phydev->drv->get_wol(phydev, wol);
1464}
1465EXPORT_SYMBOL(phy_ethtool_get_wol);
Philippe Reynes9d9a77c2016-05-10 00:19:41 +02001466
1467int phy_ethtool_get_link_ksettings(struct net_device *ndev,
1468 struct ethtool_link_ksettings *cmd)
1469{
1470 struct phy_device *phydev = ndev->phydev;
1471
1472 if (!phydev)
1473 return -ENODEV;
1474
yuval.shaia@oracle.com55141742017-06-13 10:09:46 +03001475 phy_ethtool_ksettings_get(phydev, cmd);
1476
1477 return 0;
Philippe Reynes9d9a77c2016-05-10 00:19:41 +02001478}
1479EXPORT_SYMBOL(phy_ethtool_get_link_ksettings);
1480
1481int phy_ethtool_set_link_ksettings(struct net_device *ndev,
1482 const struct ethtool_link_ksettings *cmd)
1483{
1484 struct phy_device *phydev = ndev->phydev;
1485
1486 if (!phydev)
1487 return -ENODEV;
1488
1489 return phy_ethtool_ksettings_set(phydev, cmd);
1490}
1491EXPORT_SYMBOL(phy_ethtool_set_link_ksettings);
Florian Fainellie86a8982016-11-15 10:06:30 -08001492
Andrew Lunn4069a572020-09-23 00:29:03 +02001493/**
1494 * phy_ethtool_nway_reset - Restart auto negotiation
1495 * @ndev: Network device to restart autoneg for
1496 */
Florian Fainellie86a8982016-11-15 10:06:30 -08001497int phy_ethtool_nway_reset(struct net_device *ndev)
1498{
1499 struct phy_device *phydev = ndev->phydev;
1500
1501 if (!phydev)
1502 return -ENODEV;
1503
Florian Fainelli25149ef2017-02-17 16:07:34 -08001504 if (!phydev->drv)
1505 return -EIO;
1506
Russell King002ba7052017-06-05 12:23:00 +01001507 return phy_restart_aneg(phydev);
Florian Fainellie86a8982016-11-15 10:06:30 -08001508}
1509EXPORT_SYMBOL(phy_ethtool_nway_reset);