Andrew Lunn | a2443fd | 2019-01-21 19:05:50 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Sergei Shtylyov | 2f53e90 | 2014-01-05 03:17:06 +0300 | [diff] [blame] | 2 | /* Framework for configuring and reading PHY devices |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 3 | * Based on code in sungem_phy.c and gianfar_phy.c |
| 4 | * |
| 5 | * Author: Andy Fleming |
| 6 | * |
| 7 | * Copyright (c) 2004 Freescale Semiconductor, Inc. |
Maciej W. Rozycki | 0ac4952 | 2007-09-28 22:42:14 -0700 | [diff] [blame] | 8 | * Copyright (c) 2006, 2007 Maciej W. Rozycki |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 9 | */ |
Joe Perches | 8d24248 | 2012-06-09 07:49:07 +0000 | [diff] [blame] | 10 | |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 11 | #include <linux/kernel.h> |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 12 | #include <linux/string.h> |
| 13 | #include <linux/errno.h> |
| 14 | #include <linux/unistd.h> |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 15 | #include <linux/interrupt.h> |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 16 | #include <linux/delay.h> |
| 17 | #include <linux/netdevice.h> |
| 18 | #include <linux/etherdevice.h> |
| 19 | #include <linux/skbuff.h> |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 20 | #include <linux/mm.h> |
| 21 | #include <linux/module.h> |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 22 | #include <linux/mii.h> |
| 23 | #include <linux/ethtool.h> |
| 24 | #include <linux/phy.h> |
Geert Uytterhoeven | d6f8cfa | 2017-01-25 11:39:49 +0100 | [diff] [blame] | 25 | #include <linux/phy_led_triggers.h> |
Maciej W. Rozycki | 3c3070d7 | 2006-10-03 16:18:35 +0100 | [diff] [blame] | 26 | #include <linux/workqueue.h> |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 27 | #include <linux/mdio.h> |
Sergei Shtylyov | 2f53e90 | 2014-01-05 03:17:06 +0300 | [diff] [blame] | 28 | #include <linux/io.h> |
| 29 | #include <linux/uaccess.h> |
Arun Sharma | 60063497 | 2011-07-26 16:09:06 -0700 | [diff] [blame] | 30 | #include <linux/atomic.h> |
Sergei Shtylyov | 2f53e90 | 2014-01-05 03:17:06 +0300 | [diff] [blame] | 31 | |
Heiner Kallweit | 97b33bd | 2019-05-30 15:11:06 +0200 | [diff] [blame] | 32 | #define PHY_STATE_TIME HZ |
| 33 | |
Florian Fainelli | 3e2186e | 2015-05-16 10:17:56 -0700 | [diff] [blame] | 34 | #define PHY_STATE_STR(_state) \ |
| 35 | case PHY_##_state: \ |
| 36 | return __stringify(_state); \ |
| 37 | |
| 38 | static const char *phy_state_to_str(enum phy_state st) |
| 39 | { |
| 40 | switch (st) { |
| 41 | PHY_STATE_STR(DOWN) |
Florian Fainelli | 3e2186e | 2015-05-16 10:17:56 -0700 | [diff] [blame] | 42 | PHY_STATE_STR(READY) |
Florian Fainelli | 3e2186e | 2015-05-16 10:17:56 -0700 | [diff] [blame] | 43 | PHY_STATE_STR(UP) |
Florian Fainelli | 3e2186e | 2015-05-16 10:17:56 -0700 | [diff] [blame] | 44 | PHY_STATE_STR(RUNNING) |
| 45 | PHY_STATE_STR(NOLINK) |
Florian Fainelli | 3e2186e | 2015-05-16 10:17:56 -0700 | [diff] [blame] | 46 | PHY_STATE_STR(HALTED) |
Florian Fainelli | 3e2186e | 2015-05-16 10:17:56 -0700 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | return NULL; |
| 50 | } |
| 51 | |
Heiner Kallweit | 74a992b | 2018-11-07 20:45:58 +0100 | [diff] [blame] | 52 | static 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 | |
| 58 | static 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 Fainelli | 3e2186e | 2015-05-16 10:17:56 -0700 | [diff] [blame] | 63 | |
Heiner Kallweit | 23bfaa5 | 2019-05-05 19:03:51 +0200 | [diff] [blame] | 64 | static 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 | |
| 86 | no_pause: |
| 87 | return "off"; |
| 88 | } |
| 89 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 90 | /** |
| 91 | * phy_print_status - Convenience function to print out the current phy status |
| 92 | * @phydev: the phy_device struct |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 93 | */ |
| 94 | void phy_print_status(struct phy_device *phydev) |
| 95 | { |
Sergei Shtylyov | 2f53e90 | 2014-01-05 03:17:06 +0300 | [diff] [blame] | 96 | if (phydev->link) { |
Florian Fainelli | df40cc88 | 2014-02-11 17:27:34 -0800 | [diff] [blame] | 97 | netdev_info(phydev->attached_dev, |
Florian Fainelli | 766d1d3 | 2014-02-11 17:27:35 -0800 | [diff] [blame] | 98 | "Link is Up - %s/%s - flow control %s\n", |
| 99 | phy_speed_to_str(phydev->speed), |
Russell King | da4625a | 2017-07-25 15:02:42 +0100 | [diff] [blame] | 100 | phy_duplex_to_str(phydev->duplex), |
Heiner Kallweit | 23bfaa5 | 2019-05-05 19:03:51 +0200 | [diff] [blame] | 101 | phy_pause_str(phydev)); |
Sergei Shtylyov | 2f53e90 | 2014-01-05 03:17:06 +0300 | [diff] [blame] | 102 | } else { |
Florian Fainelli | 43b6329 | 2014-02-11 17:27:33 -0800 | [diff] [blame] | 103 | netdev_info(phydev->attached_dev, "Link is Down\n"); |
Sergei Shtylyov | 2f53e90 | 2014-01-05 03:17:06 +0300 | [diff] [blame] | 104 | } |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 105 | } |
| 106 | EXPORT_SYMBOL(phy_print_status); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 107 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 108 | /** |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 109 | * 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 Fainelli | ad03350 | 2014-02-11 17:27:38 -0800 | [diff] [blame] | 115 | * Returns 0 on success or < 0 on error. |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 116 | */ |
stephen hemminger | 89ff05e | 2010-10-21 08:37:41 +0000 | [diff] [blame] | 117 | static int phy_clear_interrupt(struct phy_device *phydev) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 118 | { |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 119 | if (phydev->drv->ack_interrupt) |
Sergei Shtylyov | e62a768 | 2014-01-05 03:21:52 +0300 | [diff] [blame] | 120 | return phydev->drv->ack_interrupt(phydev); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 121 | |
Sergei Shtylyov | e62a768 | 2014-01-05 03:21:52 +0300 | [diff] [blame] | 122 | return 0; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 123 | } |
| 124 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 125 | /** |
| 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 Fainelli | ad03350 | 2014-02-11 17:27:38 -0800 | [diff] [blame] | 130 | * Returns 0 on success or < 0 on error. |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 131 | */ |
Heiner Kallweit | 695bce8 | 2018-11-09 18:35:52 +0100 | [diff] [blame] | 132 | static int phy_config_interrupt(struct phy_device *phydev, bool interrupts) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 133 | { |
Heiner Kallweit | 695bce8 | 2018-11-09 18:35:52 +0100 | [diff] [blame] | 134 | phydev->interrupts = interrupts ? 1 : 0; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 135 | if (phydev->drv->config_intr) |
Sergei Shtylyov | e62a768 | 2014-01-05 03:21:52 +0300 | [diff] [blame] | 136 | return phydev->drv->config_intr(phydev); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 137 | |
Sergei Shtylyov | e62a768 | 2014-01-05 03:21:52 +0300 | [diff] [blame] | 138 | return 0; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 139 | } |
| 140 | |
Russell King | 002ba705 | 2017-06-05 12:23:00 +0100 | [diff] [blame] | 141 | /** |
| 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 | */ |
| 148 | int 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 | } |
| 159 | EXPORT_SYMBOL_GPL(phy_restart_aneg); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 160 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 161 | /** |
| 162 | * phy_aneg_done - return auto-negotiation status |
| 163 | * @phydev: target phy_device struct |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 164 | * |
Florian Fainelli | 76a423a | 2014-02-11 17:27:37 -0800 | [diff] [blame] | 165 | * 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 Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 168 | */ |
Lendacky, Thomas | 372788f9 | 2016-11-10 17:10:46 -0600 | [diff] [blame] | 169 | int phy_aneg_done(struct phy_device *phydev) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 170 | { |
Florian Fainelli | 65f2767 | 2017-02-23 14:22:19 -0800 | [diff] [blame] | 171 | if (phydev->drv && phydev->drv->aneg_done) |
Florian Fainelli | 76a423a | 2014-02-11 17:27:37 -0800 | [diff] [blame] | 172 | return phydev->drv->aneg_done(phydev); |
Heiner Kallweit | d7bed82 | 2019-03-02 17:10:00 +0100 | [diff] [blame] | 173 | else if (phydev->is_c45) |
| 174 | return genphy_c45_aneg_done(phydev); |
| 175 | else |
| 176 | return genphy_aneg_done(phydev); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 177 | } |
Lendacky, Thomas | 372788f9 | 2016-11-10 17:10:46 -0600 | [diff] [blame] | 178 | EXPORT_SYMBOL(phy_aneg_done); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 179 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 180 | /** |
Russell King | d061303 | 2017-04-13 16:49:15 +0100 | [diff] [blame] | 181 | * 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 Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 185 | * |
Russell King | d061303 | 2017-04-13 16:49:15 +0100 | [diff] [blame] | 186 | * 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 Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 192 | */ |
Russell King | d061303 | 2017-04-13 16:49:15 +0100 | [diff] [blame] | 193 | static const struct phy_setting * |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 194 | phy_find_valid(int speed, int duplex, unsigned long *supported) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 195 | { |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 196 | return phy_lookup_setting(speed, duplex, supported, false); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 197 | } |
| 198 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 199 | /** |
Zach Brown | 1f9127c | 2016-10-17 10:49:54 -0500 | [diff] [blame] | 200 | * 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 | */ |
| 209 | unsigned int phy_supported_speeds(struct phy_device *phy, |
| 210 | unsigned int *speeds, |
| 211 | unsigned int size) |
| 212 | { |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 213 | return phy_speeds(speeds, size, phy->supported); |
Zach Brown | 1f9127c | 2016-10-17 10:49:54 -0500 | [diff] [blame] | 214 | } |
| 215 | |
| 216 | /** |
Guenter Roeck | 54da5a8 | 2015-02-17 09:36:22 -0800 | [diff] [blame] | 217 | * 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 Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 225 | static inline bool phy_check_valid(int speed, int duplex, |
| 226 | unsigned long *features) |
Guenter Roeck | 54da5a8 | 2015-02-17 09:36:22 -0800 | [diff] [blame] | 227 | { |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 228 | return !!phy_lookup_setting(speed, duplex, features, true); |
Guenter Roeck | 54da5a8 | 2015-02-17 09:36:22 -0800 | [diff] [blame] | 229 | } |
| 230 | |
| 231 | /** |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 232 | * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex |
| 233 | * @phydev: the target phy_device struct |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 234 | * |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 235 | * Description: Make sure the PHY is set to supported speeds and |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 236 | * duplexes. Drop down by one in this order: 1000/FULL, |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 237 | * 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF. |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 238 | */ |
stephen hemminger | 89ff05e | 2010-10-21 08:37:41 +0000 | [diff] [blame] | 239 | static void phy_sanitize_settings(struct phy_device *phydev) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 240 | { |
Russell King | d061303 | 2017-04-13 16:49:15 +0100 | [diff] [blame] | 241 | const struct phy_setting *setting; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 242 | |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 243 | setting = phy_find_valid(phydev->speed, phydev->duplex, |
| 244 | phydev->supported); |
Russell King | d061303 | 2017-04-13 16:49:15 +0100 | [diff] [blame] | 245 | 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 Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 253 | } |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 254 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 255 | /** |
| 256 | * phy_ethtool_sset - generic ethtool sset function, handles all the details |
| 257 | * @phydev: target phy_device struct |
| 258 | * @cmd: ethtool_cmd |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 259 | * |
| 260 | * A few notes about parameter checking: |
Mauro Carvalho Chehab | d651983 | 2017-05-12 09:35:46 -0300 | [diff] [blame] | 261 | * |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 262 | * - 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 Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 266 | * care if ethtool tries to give us bad values. |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 267 | */ |
| 268 | int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd) |
| 269 | { |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 270 | __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); |
David Decotigny | 25db033 | 2011-04-27 18:32:39 +0000 | [diff] [blame] | 271 | u32 speed = ethtool_cmd_speed(cmd); |
| 272 | |
Andrew Lunn | e5a03bf | 2016-01-06 20:11:16 +0100 | [diff] [blame] | 273 | if (cmd->phy_address != phydev->mdio.addr) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 274 | return -EINVAL; |
| 275 | |
Sergei Shtylyov | 2f53e90 | 2014-01-05 03:17:06 +0300 | [diff] [blame] | 276 | /* We make sure that we don't pass unsupported values in to the PHY */ |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 277 | ethtool_convert_legacy_u32_to_link_mode(advertising, cmd->advertising); |
| 278 | linkmode_and(advertising, advertising, phydev->supported); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 279 | |
| 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 Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 287 | if (cmd->autoneg == AUTONEG_DISABLE && |
David Decotigny | 25db033 | 2011-04-27 18:32:39 +0000 | [diff] [blame] | 288 | ((speed != SPEED_1000 && |
| 289 | speed != SPEED_100 && |
| 290 | speed != SPEED_10) || |
Joe Perches | 8e95a20 | 2009-12-03 07:58:21 +0000 | [diff] [blame] | 291 | (cmd->duplex != DUPLEX_HALF && |
| 292 | cmd->duplex != DUPLEX_FULL))) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 293 | return -EINVAL; |
| 294 | |
| 295 | phydev->autoneg = cmd->autoneg; |
| 296 | |
David Decotigny | 25db033 | 2011-04-27 18:32:39 +0000 | [diff] [blame] | 297 | phydev->speed = speed; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 298 | |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 299 | linkmode_copy(phydev->advertising, advertising); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 300 | |
Fuqian Huang | ccf355e | 2019-07-08 20:34:17 +0800 | [diff] [blame] | 301 | linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, |
| 302 | phydev->advertising, AUTONEG_ENABLE == cmd->autoneg); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 303 | |
| 304 | phydev->duplex = cmd->duplex; |
| 305 | |
Raju Lakkaraju | 1004ee6 | 2016-11-29 15:16:47 +0530 | [diff] [blame] | 306 | phydev->mdix_ctrl = cmd->eth_tp_mdix_ctrl; |
David Thomson | 634ec36 | 2015-07-10 13:56:54 +1200 | [diff] [blame] | 307 | |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 308 | /* Restart the PHY */ |
| 309 | phy_start_aneg(phydev); |
| 310 | |
| 311 | return 0; |
| 312 | } |
Kumar Gala | 9f6d55d | 2007-01-20 16:38:26 -0600 | [diff] [blame] | 313 | EXPORT_SYMBOL(phy_ethtool_sset); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 314 | |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 315 | int phy_ethtool_ksettings_set(struct phy_device *phydev, |
| 316 | const struct ethtool_link_ksettings *cmd) |
| 317 | { |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 318 | __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising); |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 319 | u8 autoneg = cmd->base.autoneg; |
| 320 | u8 duplex = cmd->base.duplex; |
| 321 | u32 speed = cmd->base.speed; |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 322 | |
| 323 | if (cmd->base.phy_address != phydev->mdio.addr) |
| 324 | return -EINVAL; |
| 325 | |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 326 | linkmode_copy(advertising, cmd->link_modes.advertising); |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 327 | |
| 328 | /* We make sure that we don't pass unsupported values in to the PHY */ |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 329 | linkmode_and(advertising, advertising, phydev->supported); |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 330 | |
| 331 | /* Verify the settings we care about. */ |
| 332 | if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE) |
| 333 | return -EINVAL; |
| 334 | |
Colin Ian King | 3e536cf | 2018-11-12 23:45:56 +0000 | [diff] [blame] | 335 | if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising)) |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 336 | 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 Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 350 | linkmode_copy(phydev->advertising, advertising); |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 351 | |
Fuqian Huang | ccf355e | 2019-07-08 20:34:17 +0800 | [diff] [blame] | 352 | linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, |
| 353 | phydev->advertising, autoneg == AUTONEG_ENABLE); |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 354 | |
| 355 | phydev->duplex = duplex; |
| 356 | |
Raju Lakkaraju | 1004ee6 | 2016-11-29 15:16:47 +0530 | [diff] [blame] | 357 | phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl; |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 358 | |
| 359 | /* Restart the PHY */ |
| 360 | phy_start_aneg(phydev); |
| 361 | |
| 362 | return 0; |
| 363 | } |
| 364 | EXPORT_SYMBOL(phy_ethtool_ksettings_set); |
| 365 | |
yuval.shaia@oracle.com | 5514174 | 2017-06-13 10:09:46 +0300 | [diff] [blame] | 366 | void phy_ethtool_ksettings_get(struct phy_device *phydev, |
| 367 | struct ethtool_link_ksettings *cmd) |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 368 | { |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 369 | linkmode_copy(cmd->link_modes.supported, phydev->supported); |
| 370 | linkmode_copy(cmd->link_modes.advertising, phydev->advertising); |
Andrew Lunn | c0ec3c2 | 2018-11-10 23:43:34 +0100 | [diff] [blame] | 371 | linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising); |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 372 | |
| 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 Fainelli | ceb6281 | 2017-09-20 15:52:14 -0700 | [diff] [blame] | 379 | cmd->base.transceiver = phy_is_internal(phydev) ? |
| 380 | XCVR_INTERNAL : XCVR_EXTERNAL; |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 381 | cmd->base.phy_address = phydev->mdio.addr; |
| 382 | cmd->base.autoneg = phydev->autoneg; |
Raju Lakkaraju | 1004ee6 | 2016-11-29 15:16:47 +0530 | [diff] [blame] | 383 | cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl; |
| 384 | cmd->base.eth_tp_mdix = phydev->mdix; |
Philippe Reynes | 2d55173 | 2016-04-15 00:35:00 +0200 | [diff] [blame] | 385 | } |
| 386 | EXPORT_SYMBOL(phy_ethtool_ksettings_get); |
| 387 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 388 | /** |
| 389 | * phy_mii_ioctl - generic PHY MII ioctl interface |
| 390 | * @phydev: the phy_device struct |
Randy Dunlap | 00c7d92 | 2010-08-09 13:41:59 +0000 | [diff] [blame] | 391 | * @ifr: &struct ifreq for socket ioctl's |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 392 | * @cmd: ioctl cmd to execute |
| 393 | * |
| 394 | * Note that this function is currently incompatible with the |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 395 | * PHYCONTROL layer. It changes registers without regard to |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 396 | * current state. Use at own risk. |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 397 | */ |
Sergei Shtylyov | 2f53e90 | 2014-01-05 03:17:06 +0300 | [diff] [blame] | 398 | int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 399 | { |
Richard Cochran | 28b0411 | 2010-07-17 08:48:55 +0000 | [diff] [blame] | 400 | struct mii_ioctl_data *mii_data = if_mii(ifr); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 401 | u16 val = mii_data->val_in; |
Brian Hill | 79ce047 | 2014-11-11 13:39:39 -0700 | [diff] [blame] | 402 | bool change_autoneg = false; |
Russell King | cdea04c | 2019-05-28 10:57:29 +0100 | [diff] [blame] | 403 | int prtad, devad; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 404 | |
| 405 | switch (cmd) { |
| 406 | case SIOCGMIIPHY: |
Andrew Lunn | e5a03bf | 2016-01-06 20:11:16 +0100 | [diff] [blame] | 407 | mii_data->phy_id = phydev->mdio.addr; |
Lennert Buytenhek | c6d6a51 | 2008-09-18 03:06:52 +0000 | [diff] [blame] | 408 | /* fall through */ |
| 409 | |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 410 | case SIOCGMIIREG: |
Russell King | cdea04c | 2019-05-28 10:57:29 +0100 | [diff] [blame] | 411 | 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 Shtylyov | e62a768 | 2014-01-05 03:21:52 +0300 | [diff] [blame] | 421 | return 0; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 422 | |
| 423 | case SIOCSMIIREG: |
Russell King | cdea04c | 2019-05-28 10:57:29 +0100 | [diff] [blame] | 424 | 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 Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 434 | case MII_BMCR: |
Brian Hill | 79ce047 | 2014-11-11 13:39:39 -0700 | [diff] [blame] | 435 | if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { |
| 436 | if (phydev->autoneg == AUTONEG_ENABLE) |
| 437 | change_autoneg = true; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 438 | phydev->autoneg = AUTONEG_DISABLE; |
Brian Hill | 79ce047 | 2014-11-11 13:39:39 -0700 | [diff] [blame] | 439 | 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 Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 452 | phydev->autoneg = AUTONEG_ENABLE; |
Brian Hill | 79ce047 | 2014-11-11 13:39:39 -0700 | [diff] [blame] | 453 | } |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 454 | break; |
| 455 | case MII_ADVERTISE: |
Andrew Lunn | 9db299c | 2018-12-05 21:49:45 +0100 | [diff] [blame] | 456 | mii_adv_mod_linkmode_adv_t(phydev->advertising, |
| 457 | val); |
Brian Hill | 79ce047 | 2014-11-11 13:39:39 -0700 | [diff] [blame] | 458 | change_autoneg = true; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 459 | break; |
| 460 | default: |
| 461 | /* do nothing */ |
| 462 | break; |
| 463 | } |
| 464 | } |
| 465 | |
Russell King | cdea04c | 2019-05-28 10:57:29 +0100 | [diff] [blame] | 466 | mdiobus_write(phydev->mdio.bus, prtad, devad, val); |
Peter Korsgaard | af1dc13 | 2011-03-10 06:52:13 +0000 | [diff] [blame] | 467 | |
Russell King | cdea04c | 2019-05-28 10:57:29 +0100 | [diff] [blame] | 468 | if (prtad == phydev->mdio.addr && |
| 469 | devad == MII_BMCR && |
Florian Fainelli | 2613f95 | 2013-12-06 13:01:31 -0800 | [diff] [blame] | 470 | val & BMCR_RESET) |
Sergei Shtylyov | e62a768 | 2014-01-05 03:21:52 +0300 | [diff] [blame] | 471 | return phy_init_hw(phydev); |
Brian Hill | 79ce047 | 2014-11-11 13:39:39 -0700 | [diff] [blame] | 472 | |
| 473 | if (change_autoneg) |
| 474 | return phy_start_aneg(phydev); |
| 475 | |
Sergei Shtylyov | e62a768 | 2014-01-05 03:21:52 +0300 | [diff] [blame] | 476 | return 0; |
David Woodhouse | dda93b48 | 2007-11-28 19:56:34 +0000 | [diff] [blame] | 477 | |
Richard Cochran | c1f19b5 | 2010-07-17 08:49:36 +0000 | [diff] [blame] | 478 | case SIOCSHWTSTAMP: |
Florian Fainelli | 25149ef | 2017-02-17 16:07:34 -0800 | [diff] [blame] | 479 | if (phydev->drv && phydev->drv->hwtstamp) |
Richard Cochran | c1f19b5 | 2010-07-17 08:49:36 +0000 | [diff] [blame] | 480 | return phydev->drv->hwtstamp(phydev, ifr); |
| 481 | /* fall through */ |
| 482 | |
David Woodhouse | dda93b48 | 2007-11-28 19:56:34 +0000 | [diff] [blame] | 483 | default: |
Lennert Buytenhek | c6d6a51 | 2008-09-18 03:06:52 +0000 | [diff] [blame] | 484 | return -EOPNOTSUPP; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 485 | } |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 486 | } |
Domen Puncer | 680e9fe | 2007-09-17 22:21:40 +0200 | [diff] [blame] | 487 | EXPORT_SYMBOL(phy_mii_ioctl); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 488 | |
Heiner Kallweit | 97b33bd | 2019-05-30 15:11:06 +0200 | [diff] [blame] | 489 | void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies) |
Heiner Kallweit | a3320bc | 2018-11-07 08:15:58 +0100 | [diff] [blame] | 490 | { |
| 491 | mod_delayed_work(system_power_efficient_wq, &phydev->state_queue, |
Heiner Kallweit | 97b33bd | 2019-05-30 15:11:06 +0200 | [diff] [blame] | 492 | jiffies); |
Heiner Kallweit | a3320bc | 2018-11-07 08:15:58 +0100 | [diff] [blame] | 493 | } |
Heiner Kallweit | 97b33bd | 2019-05-30 15:11:06 +0200 | [diff] [blame] | 494 | EXPORT_SYMBOL(phy_queue_state_machine); |
Heiner Kallweit | a3320bc | 2018-11-07 08:15:58 +0100 | [diff] [blame] | 495 | |
| 496 | static void phy_trigger_machine(struct phy_device *phydev) |
| 497 | { |
| 498 | phy_queue_state_machine(phydev, 0); |
| 499 | } |
| 500 | |
Heiner Kallweit | 7629958 | 2018-07-12 21:31:54 +0200 | [diff] [blame] | 501 | static int phy_config_aneg(struct phy_device *phydev) |
| 502 | { |
| 503 | if (phydev->drv->config_aneg) |
| 504 | return phydev->drv->config_aneg(phydev); |
Camelia Groza | 3478600 | 2018-07-23 18:06:15 +0300 | [diff] [blame] | 505 | |
| 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 Kallweit | 7629958 | 2018-07-12 21:31:54 +0200 | [diff] [blame] | 513 | } |
| 514 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 515 | /** |
Heiner Kallweit | 74a992b | 2018-11-07 20:45:58 +0100 | [diff] [blame] | 516 | * 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 | */ |
| 522 | static 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 Kallweit | c45d715 | 2018-10-15 21:25:13 +0200 | [diff] [blame] | 544 | * phy_start_aneg - start auto-negotiation for this PHY device |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 545 | * @phydev: the phy_device struct |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 546 | * |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 547 | * 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 Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 551 | */ |
Heiner Kallweit | c45d715 | 2018-10-15 21:25:13 +0200 | [diff] [blame] | 552 | int phy_start_aneg(struct phy_device *phydev) |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 553 | { |
| 554 | int err; |
| 555 | |
Florian Fainelli | 25149ef | 2017-02-17 16:07:34 -0800 | [diff] [blame] | 556 | if (!phydev->drv) |
| 557 | return -EIO; |
| 558 | |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 559 | mutex_lock(&phydev->lock); |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 560 | |
| 561 | if (AUTONEG_DISABLE == phydev->autoneg) |
| 562 | phy_sanitize_settings(phydev); |
| 563 | |
Ben Hutchings | 9b3320e | 2015-01-27 00:58:15 +0000 | [diff] [blame] | 564 | /* Invalidate LP advertising flags */ |
Andrew Lunn | c0ec3c2 | 2018-11-10 23:43:34 +0100 | [diff] [blame] | 565 | linkmode_zero(phydev->lp_advertising); |
Ben Hutchings | 9b3320e | 2015-01-27 00:58:15 +0000 | [diff] [blame] | 566 | |
Heiner Kallweit | 7629958 | 2018-07-12 21:31:54 +0200 | [diff] [blame] | 567 | err = phy_config_aneg(phydev); |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 568 | if (err < 0) |
| 569 | goto out_unlock; |
| 570 | |
Heiner Kallweit | 2bd229d | 2019-06-04 23:02:34 +0200 | [diff] [blame] | 571 | if (phy_is_started(phydev)) |
| 572 | err = phy_check_link_status(phydev); |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 573 | out_unlock: |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 574 | mutex_unlock(&phydev->lock); |
Alexander Kochetkov | f555f34 | 2017-04-20 14:00:04 +0300 | [diff] [blame] | 575 | |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 576 | return err; |
| 577 | } |
| 578 | EXPORT_SYMBOL(phy_start_aneg); |
| 579 | |
Heiner Kallweit | 2b9672d | 2018-07-12 21:32:53 +0200 | [diff] [blame] | 580 | static 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 | */ |
| 609 | int phy_speed_down(struct phy_device *phydev, bool sync) |
| 610 | { |
Heiner Kallweit | 65b2799 | 2019-08-12 23:52:19 +0200 | [diff] [blame^] | 611 | __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp); |
Heiner Kallweit | 2b9672d | 2018-07-12 21:32:53 +0200 | [diff] [blame] | 612 | int ret; |
| 613 | |
| 614 | if (phydev->autoneg != AUTONEG_ENABLE) |
| 615 | return 0; |
| 616 | |
Heiner Kallweit | 65b2799 | 2019-08-12 23:52:19 +0200 | [diff] [blame^] | 617 | linkmode_copy(adv_tmp, phydev->advertising); |
Heiner Kallweit | 2b9672d | 2018-07-12 21:32:53 +0200 | [diff] [blame] | 618 | |
Heiner Kallweit | 65b2799 | 2019-08-12 23:52:19 +0200 | [diff] [blame^] | 619 | ret = phy_speed_down_core(phydev); |
| 620 | if (ret) |
| 621 | return ret; |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 622 | |
Heiner Kallweit | 65b2799 | 2019-08-12 23:52:19 +0200 | [diff] [blame^] | 623 | linkmode_copy(phydev->adv_old, adv_tmp); |
| 624 | |
| 625 | if (linkmode_equal(phydev->advertising, adv_tmp)) |
Heiner Kallweit | 2b9672d | 2018-07-12 21:32:53 +0200 | [diff] [blame] | 626 | 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 | } |
| 634 | EXPORT_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 | */ |
| 642 | int phy_speed_up(struct phy_device *phydev) |
| 643 | { |
Heiner Kallweit | 65b2799 | 2019-08-12 23:52:19 +0200 | [diff] [blame^] | 644 | __ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp); |
Heiner Kallweit | 2b9672d | 2018-07-12 21:32:53 +0200 | [diff] [blame] | 645 | |
| 646 | if (phydev->autoneg != AUTONEG_ENABLE) |
| 647 | return 0; |
| 648 | |
Heiner Kallweit | 65b2799 | 2019-08-12 23:52:19 +0200 | [diff] [blame^] | 649 | if (linkmode_empty(phydev->adv_old)) |
| 650 | return 0; |
Heiner Kallweit | 2b9672d | 2018-07-12 21:32:53 +0200 | [diff] [blame] | 651 | |
Heiner Kallweit | 65b2799 | 2019-08-12 23:52:19 +0200 | [diff] [blame^] | 652 | linkmode_copy(adv_tmp, phydev->advertising); |
| 653 | linkmode_copy(phydev->advertising, phydev->adv_old); |
| 654 | linkmode_zero(phydev->adv_old); |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 655 | |
Heiner Kallweit | 65b2799 | 2019-08-12 23:52:19 +0200 | [diff] [blame^] | 656 | if (linkmode_equal(phydev->advertising, adv_tmp)) |
Heiner Kallweit | 2b9672d | 2018-07-12 21:32:53 +0200 | [diff] [blame] | 657 | return 0; |
| 658 | |
| 659 | return phy_config_aneg(phydev); |
| 660 | } |
| 661 | EXPORT_SYMBOL_GPL(phy_speed_up); |
| 662 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 663 | /** |
| 664 | * phy_start_machine - start PHY state machine tracking |
| 665 | * @phydev: the phy_device struct |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 666 | * |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 667 | * Description: The PHY infrastructure can run a state machine |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 668 | * which tracks whether the PHY is starting up, negotiating, |
Florian Fainelli | fb5e7606b | 2017-07-26 12:05:38 -0700 | [diff] [blame] | 669 | * 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 Shtylyov | 29935ae | 2014-01-05 03:27:17 +0300 | [diff] [blame] | 671 | * do not call this function. |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 672 | */ |
Sergei Shtylyov | 29935ae | 2014-01-05 03:27:17 +0300 | [diff] [blame] | 673 | void phy_start_machine(struct phy_device *phydev) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 674 | { |
Heiner Kallweit | 6384e48 | 2018-10-11 19:31:47 +0200 | [diff] [blame] | 675 | phy_trigger_machine(phydev); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 676 | } |
Russell King | 5e5758d | 2017-07-25 15:03:03 +0100 | [diff] [blame] | 677 | EXPORT_SYMBOL_GPL(phy_start_machine); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 678 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 679 | /** |
| 680 | * phy_stop_machine - stop the PHY state machine tracking |
| 681 | * @phydev: target phy_device struct |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 682 | * |
Florian Fainelli | fb5e7606b | 2017-07-26 12:05:38 -0700 | [diff] [blame] | 683 | * 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 Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 686 | */ |
| 687 | void phy_stop_machine(struct phy_device *phydev) |
| 688 | { |
Marcin Slusarz | a390d1f | 2009-03-13 15:41:19 -0700 | [diff] [blame] | 689 | cancel_delayed_work_sync(&phydev->state_queue); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 690 | |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 691 | mutex_lock(&phydev->lock); |
Heiner Kallweit | a2fc9d7 | 2019-02-13 20:11:40 +0100 | [diff] [blame] | 692 | if (phy_is_started(phydev)) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 693 | phydev->state = PHY_UP; |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 694 | mutex_unlock(&phydev->lock); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 695 | } |
| 696 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 697 | /** |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 698 | * phy_error - enter HALTED state for this PHY device |
| 699 | * @phydev: target phy_device struct |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 700 | * |
| 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 Fleming | 9b9a8bf | 2008-05-02 13:00:51 -0500 | [diff] [blame] | 706 | static void phy_error(struct phy_device *phydev) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 707 | { |
Heiner Kallweit | fa7b28c | 2018-12-16 19:18:26 +0100 | [diff] [blame] | 708 | WARN_ON(1); |
| 709 | |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 710 | mutex_lock(&phydev->lock); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 711 | phydev->state = PHY_HALTED; |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 712 | mutex_unlock(&phydev->lock); |
Andrew Lunn | 3c293f4 | 2016-10-12 22:14:53 +0200 | [diff] [blame] | 713 | |
Heiner Kallweit | 9f2959b | 2018-09-28 08:51:09 +0200 | [diff] [blame] | 714 | phy_trigger_machine(phydev); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 715 | } |
| 716 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 717 | /** |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 718 | * phy_disable_interrupts - Disable the PHY interrupts from the PHY side |
| 719 | * @phydev: target phy_device struct |
| 720 | */ |
stephen hemminger | 89ff05e | 2010-10-21 08:37:41 +0000 | [diff] [blame] | 721 | static int phy_disable_interrupts(struct phy_device *phydev) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 722 | { |
| 723 | int err; |
| 724 | |
| 725 | /* Disable PHY interrupts */ |
| 726 | err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 727 | if (err) |
Heiner Kallweit | 4fff2d3 | 2018-03-05 22:34:27 +0100 | [diff] [blame] | 728 | return err; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 729 | |
| 730 | /* Clear the interrupt */ |
Heiner Kallweit | 4fff2d3 | 2018-03-05 22:34:27 +0100 | [diff] [blame] | 731 | return phy_clear_interrupt(phydev); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 732 | } |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 733 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 734 | /** |
Brad Mouring | a2c054a | 2018-03-08 16:23:03 -0600 | [diff] [blame] | 735 | * phy_interrupt - PHY interrupt handler |
| 736 | * @irq: interrupt line |
| 737 | * @phy_dat: phy_device pointer |
| 738 | * |
Heiner Kallweit | 34d884e | 2018-11-09 18:58:01 +0100 | [diff] [blame] | 739 | * Description: Handle PHY interrupt |
Brad Mouring | a2c054a | 2018-03-08 16:23:03 -0600 | [diff] [blame] | 740 | */ |
| 741 | static irqreturn_t phy_interrupt(int irq, void *phy_dat) |
| 742 | { |
| 743 | struct phy_device *phydev = phy_dat; |
| 744 | |
Heiner Kallweit | 34d884e | 2018-11-09 18:58:01 +0100 | [diff] [blame] | 745 | if (phydev->drv->did_interrupt && !phydev->drv->did_interrupt(phydev)) |
| 746 | return IRQ_NONE; |
| 747 | |
Heiner Kallweit | 49644e6 | 2019-05-30 15:10:06 +0200 | [diff] [blame] | 748 | 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 Kallweit | 34d884e | 2018-11-09 18:58:01 +0100 | [diff] [blame] | 755 | |
| 756 | if (phy_clear_interrupt(phydev)) |
| 757 | goto phy_err; |
| 758 | return IRQ_HANDLED; |
| 759 | |
| 760 | phy_err: |
| 761 | phy_error(phydev); |
| 762 | return IRQ_NONE; |
Brad Mouring | a2c054a | 2018-03-08 16:23:03 -0600 | [diff] [blame] | 763 | } |
| 764 | |
| 765 | /** |
| 766 | * phy_enable_interrupts - Enable the interrupts from the PHY side |
| 767 | * @phydev: target phy_device struct |
| 768 | */ |
| 769 | static 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 Kallweit | 07b0928 | 2019-05-30 15:09:15 +0200 | [diff] [blame] | 780 | * phy_request_interrupt - request and enable interrupt for a PHY device |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 781 | * @phydev: target phy_device struct |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 782 | * |
Heiner Kallweit | 07b0928 | 2019-05-30 15:09:15 +0200 | [diff] [blame] | 783 | * Description: Request and enable the interrupt for the given PHY. |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 784 | * If this fails, then we set irq to PHY_POLL. |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 785 | * This should only be called with a valid IRQ number. |
| 786 | */ |
Heiner Kallweit | 434a431 | 2019-01-23 07:31:58 +0100 | [diff] [blame] | 787 | void phy_request_interrupt(struct phy_device *phydev) |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 788 | { |
Heiner Kallweit | 434a431 | 2019-01-23 07:31:58 +0100 | [diff] [blame] | 789 | int err; |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 790 | |
Heiner Kallweit | 434a431 | 2019-01-23 07:31:58 +0100 | [diff] [blame] | 791 | 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 Kallweit | 07b0928 | 2019-05-30 15:09:15 +0200 | [diff] [blame] | 798 | } 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 Kallweit | 434a431 | 2019-01-23 07:31:58 +0100 | [diff] [blame] | 804 | } |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 805 | } |
Heiner Kallweit | 434a431 | 2019-01-23 07:31:58 +0100 | [diff] [blame] | 806 | EXPORT_SYMBOL(phy_request_interrupt); |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 807 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 808 | /** |
Heiner Kallweit | 07b0928 | 2019-05-30 15:09:15 +0200 | [diff] [blame] | 809 | * 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 | */ |
| 815 | void phy_free_interrupt(struct phy_device *phydev) |
| 816 | { |
| 817 | phy_disable_interrupts(phydev); |
| 818 | free_irq(phydev->irq, phydev); |
| 819 | } |
| 820 | EXPORT_SYMBOL(phy_free_interrupt); |
| 821 | |
| 822 | /** |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 823 | * phy_stop - Bring down the PHY link, and stop checking the status |
| 824 | * @phydev: target phy_device struct |
| 825 | */ |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 826 | void phy_stop(struct phy_device *phydev) |
| 827 | { |
Heiner Kallweit | a2fc9d7 | 2019-02-13 20:11:40 +0100 | [diff] [blame] | 828 | if (!phy_is_started(phydev)) { |
Heiner Kallweit | 2b3e88e | 2018-12-16 18:30:14 +0100 | [diff] [blame] | 829 | WARN(1, "called from state %s\n", |
| 830 | phy_state_to_str(phydev->state)); |
Heiner Kallweit | 2b3e88e | 2018-12-16 18:30:14 +0100 | [diff] [blame] | 831 | return; |
| 832 | } |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 833 | |
Heiner Kallweit | a2fc9d7 | 2019-02-13 20:11:40 +0100 | [diff] [blame] | 834 | mutex_lock(&phydev->lock); |
| 835 | |
Maciej W. Rozycki | 6daf653 | 2007-09-28 22:42:15 -0700 | [diff] [blame] | 836 | phydev->state = PHY_HALTED; |
| 837 | |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 838 | mutex_unlock(&phydev->lock); |
Maciej W. Rozycki | 3c3070d7 | 2006-10-03 16:18:35 +0100 | [diff] [blame] | 839 | |
Heiner Kallweit | e8cfd9d | 2018-09-18 21:56:32 +0200 | [diff] [blame] | 840 | phy_state_machine(&phydev->state_queue.work); |
Heiner Kallweit | cbfd12b | 2019-01-17 20:08:39 +0100 | [diff] [blame] | 841 | phy_stop_machine(phydev); |
Heiner Kallweit | e8cfd9d | 2018-09-18 21:56:32 +0200 | [diff] [blame] | 842 | |
Sergei Shtylyov | 2f53e90 | 2014-01-05 03:17:06 +0300 | [diff] [blame] | 843 | /* Cannot call flush_scheduled_work() here as desired because |
Heiner Kallweit | 34d884e | 2018-11-09 18:58:01 +0100 | [diff] [blame] | 844 | * of rtnl_lock(), but PHY_HALTED shall guarantee irq handler |
Maciej W. Rozycki | 3c3070d7 | 2006-10-03 16:18:35 +0100 | [diff] [blame] | 845 | * will not reenable interrupts. |
| 846 | */ |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 847 | } |
Sergei Shtylyov | 2f53e90 | 2014-01-05 03:17:06 +0300 | [diff] [blame] | 848 | EXPORT_SYMBOL(phy_stop); |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 849 | |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 850 | /** |
| 851 | * phy_start - start or restart a PHY device |
| 852 | * @phydev: target phy_device struct |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 853 | * |
Randy Dunlap | b3df0da | 2007-03-06 02:41:48 -0800 | [diff] [blame] | 854 | * Description: Indicates the attached device's readiness to |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 855 | * 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 | */ |
| 860 | void phy_start(struct phy_device *phydev) |
| 861 | { |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 862 | mutex_lock(&phydev->lock); |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 863 | |
Heiner Kallweit | 2179626 | 2019-01-23 07:30:38 +0100 | [diff] [blame] | 864 | 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 Kallweit | 9e573cf | 2019-01-23 07:31:23 +0100 | [diff] [blame] | 870 | /* if phy was suspended, bring the physical link up again */ |
| 871 | __phy_resume(phydev); |
Russell King | f5e6403 | 2017-12-12 10:45:36 +0000 | [diff] [blame] | 872 | |
Heiner Kallweit | f24098f | 2019-05-01 22:14:21 +0200 | [diff] [blame] | 873 | phydev->state = PHY_UP; |
Heiner Kallweit | 9e573cf | 2019-01-23 07:31:23 +0100 | [diff] [blame] | 874 | |
| 875 | phy_start_machine(phydev); |
Heiner Kallweit | 2179626 | 2019-01-23 07:30:38 +0100 | [diff] [blame] | 876 | out: |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 877 | mutex_unlock(&phydev->lock); |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 878 | } |
Andy Fleming | e139345 | 2005-08-24 18:46:21 -0500 | [diff] [blame] | 879 | EXPORT_SYMBOL(phy_start); |
Jeff Garzik | 67c4f3f | 2005-08-11 02:07:25 -0400 | [diff] [blame] | 880 | |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 881 | /** |
| 882 | * phy_state_machine - Handle the state machine |
| 883 | * @work: work_struct that describes the work to be done |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 884 | */ |
Anton Vorontsov | 4f9c85a | 2010-01-18 05:37:16 +0000 | [diff] [blame] | 885 | void phy_state_machine(struct work_struct *work) |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 886 | { |
Jean Delvare | bf6aede | 2009-04-02 16:56:54 -0700 | [diff] [blame] | 887 | struct delayed_work *dwork = to_delayed_work(work); |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 888 | struct phy_device *phydev = |
Marcin Slusarz | a390d1f | 2009-03-13 15:41:19 -0700 | [diff] [blame] | 889 | container_of(dwork, struct phy_device, state_queue); |
Tim Beale | c15e10e | 2015-05-18 15:38:38 +1200 | [diff] [blame] | 890 | bool needs_aneg = false, do_suspend = false; |
Florian Fainelli | 3e2186e | 2015-05-16 10:17:56 -0700 | [diff] [blame] | 891 | enum phy_state old_state; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 892 | int err = 0; |
| 893 | |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 894 | mutex_lock(&phydev->lock); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 895 | |
Florian Fainelli | 3e2186e | 2015-05-16 10:17:56 -0700 | [diff] [blame] | 896 | old_state = phydev->state; |
| 897 | |
Florian Fainelli | e109374 | 2013-12-17 21:38:12 -0800 | [diff] [blame] | 898 | switch (phydev->state) { |
| 899 | case PHY_DOWN: |
Florian Fainelli | e109374 | 2013-12-17 21:38:12 -0800 | [diff] [blame] | 900 | case PHY_READY: |
Florian Fainelli | e109374 | 2013-12-17 21:38:12 -0800 | [diff] [blame] | 901 | break; |
| 902 | case PHY_UP: |
Zhangfei Gao | 6e14a5ee | 2014-05-15 13:35:34 +0800 | [diff] [blame] | 903 | needs_aneg = true; |
Florian Fainelli | e109374 | 2013-12-17 21:38:12 -0800 | [diff] [blame] | 904 | |
Florian Fainelli | e109374 | 2013-12-17 21:38:12 -0800 | [diff] [blame] | 905 | break; |
| 906 | case PHY_NOLINK: |
Heiner Kallweit | c8e977b | 2018-11-07 20:47:53 +0100 | [diff] [blame] | 907 | case PHY_RUNNING: |
Heiner Kallweit | c8e977b | 2018-11-07 20:47:53 +0100 | [diff] [blame] | 908 | err = phy_check_link_status(phydev); |
Florian Fainelli | e109374 | 2013-12-17 21:38:12 -0800 | [diff] [blame] | 909 | break; |
Florian Fainelli | e109374 | 2013-12-17 21:38:12 -0800 | [diff] [blame] | 910 | case PHY_HALTED: |
| 911 | if (phydev->link) { |
| 912 | phydev->link = 0; |
Russell King | a81497b | 2017-07-25 15:02:58 +0100 | [diff] [blame] | 913 | phy_link_down(phydev, true); |
Zhangfei Gao | 6e14a5ee | 2014-05-15 13:35:34 +0800 | [diff] [blame] | 914 | do_suspend = true; |
Florian Fainelli | e109374 | 2013-12-17 21:38:12 -0800 | [diff] [blame] | 915 | } |
| 916 | break; |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 917 | } |
| 918 | |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 919 | mutex_unlock(&phydev->lock); |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 920 | |
| 921 | if (needs_aneg) |
Heiner Kallweit | c45d715 | 2018-10-15 21:25:13 +0200 | [diff] [blame] | 922 | err = phy_start_aneg(phydev); |
Zhangfei Gao | 6e14a5ee | 2014-05-15 13:35:34 +0800 | [diff] [blame] | 923 | else if (do_suspend) |
Sebastian Hesselbarth | be9dad1 | 2013-12-13 10:20:29 +0100 | [diff] [blame] | 924 | phy_suspend(phydev); |
| 925 | |
Andy Fleming | 00db818 | 2005-07-30 19:31:23 -0400 | [diff] [blame] | 926 | if (err < 0) |
| 927 | phy_error(phydev); |
| 928 | |
Heiner Kallweit | 5c5f626 | 2019-03-19 19:56:51 +0100 | [diff] [blame] | 929 | if (old_state != phydev->state) { |
Marc Gonzalez | 6a95bef | 2017-07-28 13:18:30 +0200 | [diff] [blame] | 930 | phydev_dbg(phydev, "PHY state change %s -> %s\n", |
| 931 | phy_state_to_str(old_state), |
| 932 | phy_state_to_str(phydev->state)); |
Heiner Kallweit | 5c5f626 | 2019-03-19 19:56:51 +0100 | [diff] [blame] | 933 | if (phydev->drv && phydev->drv->link_change_notify) |
| 934 | phydev->drv->link_change_notify(phydev); |
| 935 | } |
Florian Fainelli | 3e2186e | 2015-05-16 10:17:56 -0700 | [diff] [blame] | 936 | |
Florian Fainelli | d5c3d84 | 2016-01-18 19:33:06 -0800 | [diff] [blame] | 937 | /* 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 Kallweit | 075ddeb | 2018-09-20 22:34:25 +0200 | [diff] [blame] | 939 | * 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 Fainelli | d5c3d84 | 2016-01-18 19:33:06 -0800 | [diff] [blame] | 944 | */ |
Heiner Kallweit | a200490 | 2019-02-13 20:12:54 +0100 | [diff] [blame] | 945 | mutex_lock(&phydev->lock); |
Heiner Kallweit | 2b3e88e | 2018-12-16 18:30:14 +0100 | [diff] [blame] | 946 | if (phy_polling_mode(phydev) && phy_is_started(phydev)) |
Heiner Kallweit | 9f2959b | 2018-09-28 08:51:09 +0200 | [diff] [blame] | 947 | phy_queue_state_machine(phydev, PHY_STATE_TIME); |
Heiner Kallweit | a200490 | 2019-02-13 20:12:54 +0100 | [diff] [blame] | 948 | mutex_unlock(&phydev->lock); |
Nate Case | 35b5f6b | 2008-01-29 10:05:09 -0600 | [diff] [blame] | 949 | } |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 950 | |
Andrew Lunn | 664fcf1 | 2016-10-16 19:56:51 +0200 | [diff] [blame] | 951 | /** |
| 952 | * phy_mac_interrupt - MAC says the link has changed |
| 953 | * @phydev: phy_device struct with changed link |
Andrew Lunn | 664fcf1 | 2016-10-16 19:56:51 +0200 | [diff] [blame] | 954 | * |
Heiner Kallweit | 28b2e0d | 2018-01-10 21:21:31 +0100 | [diff] [blame] | 955 | * 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 Lunn | 664fcf1 | 2016-10-16 19:56:51 +0200 | [diff] [blame] | 957 | */ |
Heiner Kallweit | 28b2e0d | 2018-01-10 21:21:31 +0100 | [diff] [blame] | 958 | void phy_mac_interrupt(struct phy_device *phydev) |
Florian Fainelli | 5ea94e7 | 2013-05-19 22:53:43 +0000 | [diff] [blame] | 959 | { |
Florian Fainelli | deccd16f9 | 2016-01-18 19:33:07 -0800 | [diff] [blame] | 960 | /* Trigger a state machine change */ |
Heiner Kallweit | d73a215 | 2018-11-09 18:56:52 +0100 | [diff] [blame] | 961 | phy_trigger_machine(phydev); |
Florian Fainelli | 5ea94e7 | 2013-05-19 22:53:43 +0000 | [diff] [blame] | 962 | } |
| 963 | EXPORT_SYMBOL(phy_mac_interrupt); |
| 964 | |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 965 | static 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 CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 989 | /** |
| 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 | */ |
| 999 | int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable) |
| 1000 | { |
Florian Fainelli | 25149ef | 2017-02-17 16:07:34 -0800 | [diff] [blame] | 1001 | if (!phydev->drv) |
| 1002 | return -EIO; |
| 1003 | |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1004 | /* According to 802.3az,the EEE is supported only in full duplex-mode. |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1005 | */ |
Russell King | 32d7514 | 2017-03-31 10:37:18 +0100 | [diff] [blame] | 1006 | if (phydev->duplex == DUPLEX_FULL) { |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 1007 | __ETHTOOL_DECLARE_LINK_MODE_MASK(common); |
| 1008 | __ETHTOOL_DECLARE_LINK_MODE_MASK(lp); |
| 1009 | __ETHTOOL_DECLARE_LINK_MODE_MASK(adv); |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1010 | int eee_lp, eee_cap, eee_adv; |
Bjorn Helgaas | 4ae6e50 | 2014-03-04 17:35:44 -0700 | [diff] [blame] | 1011 | int status; |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 1012 | u32 cap; |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1013 | |
| 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 King | a6d99fc | 2017-03-21 16:36:53 +0000 | [diff] [blame] | 1020 | eee_cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); |
Giuseppe CAVALLARO | 7a4cecf | 2014-08-26 09:26:52 +0200 | [diff] [blame] | 1021 | if (eee_cap <= 0) |
| 1022 | goto eee_exit_err; |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1023 | |
Allan, Bruce W | b32607d | 2012-08-20 04:55:29 +0000 | [diff] [blame] | 1024 | cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap); |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1025 | if (!cap) |
Giuseppe CAVALLARO | 7a4cecf | 2014-08-26 09:26:52 +0200 | [diff] [blame] | 1026 | goto eee_exit_err; |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1027 | |
| 1028 | /* Check which link settings negotiated and verify it in |
| 1029 | * the EEE advertising registers. |
| 1030 | */ |
Russell King | a6d99fc | 2017-03-21 16:36:53 +0000 | [diff] [blame] | 1031 | eee_lp = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE); |
Giuseppe CAVALLARO | 7a4cecf | 2014-08-26 09:26:52 +0200 | [diff] [blame] | 1032 | if (eee_lp <= 0) |
| 1033 | goto eee_exit_err; |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1034 | |
Russell King | a6d99fc | 2017-03-21 16:36:53 +0000 | [diff] [blame] | 1035 | eee_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
Giuseppe CAVALLARO | 7a4cecf | 2014-08-26 09:26:52 +0200 | [diff] [blame] | 1036 | if (eee_adv <= 0) |
| 1037 | goto eee_exit_err; |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1038 | |
Andrew Lunn | 3c1bcc8 | 2018-11-10 23:43:33 +0100 | [diff] [blame] | 1039 | 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 CAVALLARO | 7a4cecf | 2014-08-26 09:26:52 +0200 | [diff] [blame] | 1044 | goto eee_exit_err; |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1045 | |
Heiner Kallweit | b52c018 | 2019-02-06 07:38:43 +0100 | [diff] [blame] | 1046 | if (clk_stop_enable) |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1047 | /* Configure the PHY to stop receiving xMII |
| 1048 | * clock while it is signaling LPI. |
| 1049 | */ |
Heiner Kallweit | b52c018 | 2019-02-06 07:38:43 +0100 | [diff] [blame] | 1050 | phy_set_bits_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1, |
| 1051 | MDIO_PCS_CTRL1_CLKSTOP_EN); |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1052 | |
Sergei Shtylyov | e62a768 | 2014-01-05 03:21:52 +0300 | [diff] [blame] | 1053 | return 0; /* EEE supported */ |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1054 | } |
Giuseppe CAVALLARO | 7a4cecf | 2014-08-26 09:26:52 +0200 | [diff] [blame] | 1055 | eee_exit_err: |
Sergei Shtylyov | e62a768 | 2014-01-05 03:21:52 +0300 | [diff] [blame] | 1056 | return -EPROTONOSUPPORT; |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1057 | } |
| 1058 | EXPORT_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 | */ |
| 1067 | int phy_get_eee_err(struct phy_device *phydev) |
| 1068 | { |
Florian Fainelli | 25149ef | 2017-02-17 16:07:34 -0800 | [diff] [blame] | 1069 | if (!phydev->drv) |
| 1070 | return -EIO; |
| 1071 | |
Russell King | a6d99fc | 2017-03-21 16:36:53 +0000 | [diff] [blame] | 1072 | return phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR); |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1073 | } |
| 1074 | EXPORT_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 | */ |
| 1084 | int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) |
| 1085 | { |
| 1086 | int val; |
| 1087 | |
Florian Fainelli | 25149ef | 2017-02-17 16:07:34 -0800 | [diff] [blame] | 1088 | if (!phydev->drv) |
| 1089 | return -EIO; |
| 1090 | |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1091 | /* Get Supported EEE */ |
Russell King | a6d99fc | 2017-03-21 16:36:53 +0000 | [diff] [blame] | 1092 | val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE); |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1093 | if (val < 0) |
| 1094 | return val; |
Allan, Bruce W | b32607d | 2012-08-20 04:55:29 +0000 | [diff] [blame] | 1095 | data->supported = mmd_eee_cap_to_ethtool_sup_t(val); |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1096 | |
| 1097 | /* Get advertisement EEE */ |
Russell King | a6d99fc | 2017-03-21 16:36:53 +0000 | [diff] [blame] | 1098 | val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1099 | if (val < 0) |
| 1100 | return val; |
Allan, Bruce W | b32607d | 2012-08-20 04:55:29 +0000 | [diff] [blame] | 1101 | data->advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
Heiner Kallweit | d1420bb | 2018-11-27 22:30:14 +0100 | [diff] [blame] | 1102 | data->eee_enabled = !!data->advertised; |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1103 | |
| 1104 | /* Get LP advertisement EEE */ |
Russell King | a6d99fc | 2017-03-21 16:36:53 +0000 | [diff] [blame] | 1105 | val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE); |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1106 | if (val < 0) |
| 1107 | return val; |
Allan, Bruce W | b32607d | 2012-08-20 04:55:29 +0000 | [diff] [blame] | 1108 | data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val); |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1109 | |
Heiner Kallweit | d1420bb | 2018-11-27 22:30:14 +0100 | [diff] [blame] | 1110 | data->eee_active = !!(data->advertised & data->lp_advertised); |
| 1111 | |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1112 | return 0; |
| 1113 | } |
| 1114 | EXPORT_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 | */ |
| 1123 | int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) |
| 1124 | { |
Heiner Kallweit | d1420bb | 2018-11-27 22:30:14 +0100 | [diff] [blame] | 1125 | int cap, old_adv, adv = 0, ret; |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1126 | |
Florian Fainelli | 25149ef | 2017-02-17 16:07:34 -0800 | [diff] [blame] | 1127 | if (!phydev->drv) |
| 1128 | return -EIO; |
| 1129 | |
Russell King | 83ea067 | 2017-03-31 10:37:07 +0100 | [diff] [blame] | 1130 | /* 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 King | f75abeb | 2017-03-31 10:37:12 +0100 | [diff] [blame] | 1135 | old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV); |
| 1136 | if (old_adv < 0) |
| 1137 | return old_adv; |
| 1138 | |
Heiner Kallweit | d1420bb | 2018-11-27 22:30:14 +0100 | [diff] [blame] | 1139 | 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 | } |
jbrunet | d853d14 | 2016-11-28 10:46:46 +0100 | [diff] [blame] | 1145 | |
Russell King | f75abeb | 2017-03-31 10:37:12 +0100 | [diff] [blame] | 1146 | 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 King | 002ba705 | 2017-06-05 12:23:00 +0100 | [diff] [blame] | 1154 | ret = phy_restart_aneg(phydev); |
Russell King | f75abeb | 2017-03-31 10:37:12 +0100 | [diff] [blame] | 1155 | if (ret < 0) |
| 1156 | return ret; |
| 1157 | } |
| 1158 | |
| 1159 | return 0; |
Giuseppe CAVALLARO | a59a4d1 | 2012-06-27 21:14:38 +0000 | [diff] [blame] | 1160 | } |
| 1161 | EXPORT_SYMBOL(phy_ethtool_set_eee); |
Michael Stapelberg | 42e836e | 2013-03-11 13:56:44 +0000 | [diff] [blame] | 1162 | |
| 1163 | int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) |
| 1164 | { |
Florian Fainelli | 25149ef | 2017-02-17 16:07:34 -0800 | [diff] [blame] | 1165 | if (phydev->drv && phydev->drv->set_wol) |
Michael Stapelberg | 42e836e | 2013-03-11 13:56:44 +0000 | [diff] [blame] | 1166 | return phydev->drv->set_wol(phydev, wol); |
| 1167 | |
| 1168 | return -EOPNOTSUPP; |
| 1169 | } |
| 1170 | EXPORT_SYMBOL(phy_ethtool_set_wol); |
| 1171 | |
| 1172 | void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) |
| 1173 | { |
Florian Fainelli | 25149ef | 2017-02-17 16:07:34 -0800 | [diff] [blame] | 1174 | if (phydev->drv && phydev->drv->get_wol) |
Michael Stapelberg | 42e836e | 2013-03-11 13:56:44 +0000 | [diff] [blame] | 1175 | phydev->drv->get_wol(phydev, wol); |
| 1176 | } |
| 1177 | EXPORT_SYMBOL(phy_ethtool_get_wol); |
Philippe Reynes | 9d9a77c | 2016-05-10 00:19:41 +0200 | [diff] [blame] | 1178 | |
| 1179 | int 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.com | 5514174 | 2017-06-13 10:09:46 +0300 | [diff] [blame] | 1187 | phy_ethtool_ksettings_get(phydev, cmd); |
| 1188 | |
| 1189 | return 0; |
Philippe Reynes | 9d9a77c | 2016-05-10 00:19:41 +0200 | [diff] [blame] | 1190 | } |
| 1191 | EXPORT_SYMBOL(phy_ethtool_get_link_ksettings); |
| 1192 | |
| 1193 | int 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 | } |
| 1203 | EXPORT_SYMBOL(phy_ethtool_set_link_ksettings); |
Florian Fainelli | e86a898 | 2016-11-15 10:06:30 -0800 | [diff] [blame] | 1204 | |
| 1205 | int 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 Fainelli | 25149ef | 2017-02-17 16:07:34 -0800 | [diff] [blame] | 1212 | if (!phydev->drv) |
| 1213 | return -EIO; |
| 1214 | |
Russell King | 002ba705 | 2017-06-05 12:23:00 +0100 | [diff] [blame] | 1215 | return phy_restart_aneg(phydev); |
Florian Fainelli | e86a898 | 2016-11-15 10:06:30 -0800 | [diff] [blame] | 1216 | } |
| 1217 | EXPORT_SYMBOL(phy_ethtool_nway_reset); |