![Heiner Kallweit](/assets/img/avatar_default.png)
Now that we have it let's use genphy_c45_aneg_done() in phy_aneg_done(). Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
1229 lines
32 KiB
C
1229 lines
32 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/* Framework for configuring and reading PHY devices
|
|
* Based on code in sungem_phy.c and gianfar_phy.c
|
|
*
|
|
* Author: Andy Fleming
|
|
*
|
|
* Copyright (c) 2004 Freescale Semiconductor, Inc.
|
|
* Copyright (c) 2006, 2007 Maciej W. Rozycki
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/unistd.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mii.h>
|
|
#include <linux/ethtool.h>
|
|
#include <linux/phy.h>
|
|
#include <linux/phy_led_triggers.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/mdio.h>
|
|
#include <linux/io.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/atomic.h>
|
|
|
|
#define PHY_STATE_STR(_state) \
|
|
case PHY_##_state: \
|
|
return __stringify(_state); \
|
|
|
|
static const char *phy_state_to_str(enum phy_state st)
|
|
{
|
|
switch (st) {
|
|
PHY_STATE_STR(DOWN)
|
|
PHY_STATE_STR(READY)
|
|
PHY_STATE_STR(UP)
|
|
PHY_STATE_STR(RUNNING)
|
|
PHY_STATE_STR(NOLINK)
|
|
PHY_STATE_STR(FORCING)
|
|
PHY_STATE_STR(HALTED)
|
|
PHY_STATE_STR(RESUMING)
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void phy_link_up(struct phy_device *phydev)
|
|
{
|
|
phydev->phy_link_change(phydev, true, true);
|
|
phy_led_trigger_change_speed(phydev);
|
|
}
|
|
|
|
static void phy_link_down(struct phy_device *phydev, bool do_carrier)
|
|
{
|
|
phydev->phy_link_change(phydev, false, do_carrier);
|
|
phy_led_trigger_change_speed(phydev);
|
|
}
|
|
|
|
/**
|
|
* phy_print_status - Convenience function to print out the current phy status
|
|
* @phydev: the phy_device struct
|
|
*/
|
|
void phy_print_status(struct phy_device *phydev)
|
|
{
|
|
if (phydev->link) {
|
|
netdev_info(phydev->attached_dev,
|
|
"Link is Up - %s/%s - flow control %s\n",
|
|
phy_speed_to_str(phydev->speed),
|
|
phy_duplex_to_str(phydev->duplex),
|
|
phydev->pause ? "rx/tx" : "off");
|
|
} else {
|
|
netdev_info(phydev->attached_dev, "Link is Down\n");
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(phy_print_status);
|
|
|
|
/**
|
|
* phy_clear_interrupt - Ack the phy device's interrupt
|
|
* @phydev: the phy_device struct
|
|
*
|
|
* If the @phydev driver has an ack_interrupt function, call it to
|
|
* ack and clear the phy device's interrupt.
|
|
*
|
|
* Returns 0 on success or < 0 on error.
|
|
*/
|
|
static int phy_clear_interrupt(struct phy_device *phydev)
|
|
{
|
|
if (phydev->drv->ack_interrupt)
|
|
return phydev->drv->ack_interrupt(phydev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* phy_config_interrupt - configure the PHY device for the requested interrupts
|
|
* @phydev: the phy_device struct
|
|
* @interrupts: interrupt flags to configure for this @phydev
|
|
*
|
|
* Returns 0 on success or < 0 on error.
|
|
*/
|
|
static int phy_config_interrupt(struct phy_device *phydev, bool interrupts)
|
|
{
|
|
phydev->interrupts = interrupts ? 1 : 0;
|
|
if (phydev->drv->config_intr)
|
|
return phydev->drv->config_intr(phydev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* phy_restart_aneg - restart auto-negotiation
|
|
* @phydev: target phy_device struct
|
|
*
|
|
* Restart the autonegotiation on @phydev. Returns >= 0 on success or
|
|
* negative errno on error.
|
|
*/
|
|
int phy_restart_aneg(struct phy_device *phydev)
|
|
{
|
|
int ret;
|
|
|
|
if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0)))
|
|
ret = genphy_c45_restart_aneg(phydev);
|
|
else
|
|
ret = genphy_restart_aneg(phydev);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(phy_restart_aneg);
|
|
|
|
/**
|
|
* phy_aneg_done - return auto-negotiation status
|
|
* @phydev: target phy_device struct
|
|
*
|
|
* Description: Return the auto-negotiation status from this @phydev
|
|
* Returns > 0 on success or < 0 on error. 0 means that auto-negotiation
|
|
* is still pending.
|
|
*/
|
|
int phy_aneg_done(struct phy_device *phydev)
|
|
{
|
|
if (phydev->drv && phydev->drv->aneg_done)
|
|
return phydev->drv->aneg_done(phydev);
|
|
else if (phydev->is_c45)
|
|
return genphy_c45_aneg_done(phydev);
|
|
else
|
|
return genphy_aneg_done(phydev);
|
|
}
|
|
EXPORT_SYMBOL(phy_aneg_done);
|
|
|
|
/**
|
|
* phy_find_valid - find a PHY setting that matches the requested parameters
|
|
* @speed: desired speed
|
|
* @duplex: desired duplex
|
|
* @supported: mask of supported link modes
|
|
*
|
|
* Locate a supported phy setting that is, in priority order:
|
|
* - an exact match for the specified speed and duplex mode
|
|
* - a match for the specified speed, or slower speed
|
|
* - the slowest supported speed
|
|
* Returns the matched phy_setting entry, or %NULL if no supported phy
|
|
* settings were found.
|
|
*/
|
|
static const struct phy_setting *
|
|
phy_find_valid(int speed, int duplex, unsigned long *supported)
|
|
{
|
|
return phy_lookup_setting(speed, duplex, supported, false);
|
|
}
|
|
|
|
/**
|
|
* phy_supported_speeds - return all speeds currently supported by a phy device
|
|
* @phy: The phy device to return supported speeds of.
|
|
* @speeds: buffer to store supported speeds in.
|
|
* @size: size of speeds buffer.
|
|
*
|
|
* Description: Returns the number of supported speeds, and fills the speeds
|
|
* buffer with the supported speeds. If speeds buffer is too small to contain
|
|
* all currently supported speeds, will return as many speeds as can fit.
|
|
*/
|
|
unsigned int phy_supported_speeds(struct phy_device *phy,
|
|
unsigned int *speeds,
|
|
unsigned int size)
|
|
{
|
|
return phy_speeds(speeds, size, phy->supported);
|
|
}
|
|
|
|
/**
|
|
* phy_check_valid - check if there is a valid PHY setting which matches
|
|
* speed, duplex, and feature mask
|
|
* @speed: speed to match
|
|
* @duplex: duplex to match
|
|
* @features: A mask of the valid settings
|
|
*
|
|
* Description: Returns true if there is a valid setting, false otherwise.
|
|
*/
|
|
static inline bool phy_check_valid(int speed, int duplex,
|
|
unsigned long *features)
|
|
{
|
|
return !!phy_lookup_setting(speed, duplex, features, true);
|
|
}
|
|
|
|
/**
|
|
* phy_sanitize_settings - make sure the PHY is set to supported speed and duplex
|
|
* @phydev: the target phy_device struct
|
|
*
|
|
* Description: Make sure the PHY is set to supported speeds and
|
|
* duplexes. Drop down by one in this order: 1000/FULL,
|
|
* 1000/HALF, 100/FULL, 100/HALF, 10/FULL, 10/HALF.
|
|
*/
|
|
static void phy_sanitize_settings(struct phy_device *phydev)
|
|
{
|
|
const struct phy_setting *setting;
|
|
|
|
/* Sanitize settings based on PHY capabilities */
|
|
if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported))
|
|
phydev->autoneg = AUTONEG_DISABLE;
|
|
|
|
setting = phy_find_valid(phydev->speed, phydev->duplex,
|
|
phydev->supported);
|
|
if (setting) {
|
|
phydev->speed = setting->speed;
|
|
phydev->duplex = setting->duplex;
|
|
} else {
|
|
/* We failed to find anything (no supported speeds?) */
|
|
phydev->speed = SPEED_UNKNOWN;
|
|
phydev->duplex = DUPLEX_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* phy_ethtool_sset - generic ethtool sset function, handles all the details
|
|
* @phydev: target phy_device struct
|
|
* @cmd: ethtool_cmd
|
|
*
|
|
* A few notes about parameter checking:
|
|
*
|
|
* - We don't set port or transceiver, so we don't care what they
|
|
* were set to.
|
|
* - phy_start_aneg() will make sure forced settings are sane, and
|
|
* choose the next best ones from the ones selected, so we don't
|
|
* care if ethtool tries to give us bad values.
|
|
*/
|
|
int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd)
|
|
{
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
|
|
u32 speed = ethtool_cmd_speed(cmd);
|
|
|
|
if (cmd->phy_address != phydev->mdio.addr)
|
|
return -EINVAL;
|
|
|
|
/* We make sure that we don't pass unsupported values in to the PHY */
|
|
ethtool_convert_legacy_u32_to_link_mode(advertising, cmd->advertising);
|
|
linkmode_and(advertising, advertising, phydev->supported);
|
|
|
|
/* Verify the settings we care about. */
|
|
if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE)
|
|
return -EINVAL;
|
|
|
|
if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0)
|
|
return -EINVAL;
|
|
|
|
if (cmd->autoneg == AUTONEG_DISABLE &&
|
|
((speed != SPEED_1000 &&
|
|
speed != SPEED_100 &&
|
|
speed != SPEED_10) ||
|
|
(cmd->duplex != DUPLEX_HALF &&
|
|
cmd->duplex != DUPLEX_FULL)))
|
|
return -EINVAL;
|
|
|
|
phydev->autoneg = cmd->autoneg;
|
|
|
|
phydev->speed = speed;
|
|
|
|
linkmode_copy(phydev->advertising, advertising);
|
|
|
|
if (AUTONEG_ENABLE == cmd->autoneg)
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
|
|
phydev->advertising);
|
|
else
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
|
|
phydev->advertising);
|
|
|
|
phydev->duplex = cmd->duplex;
|
|
|
|
phydev->mdix_ctrl = cmd->eth_tp_mdix_ctrl;
|
|
|
|
/* Restart the PHY */
|
|
phy_start_aneg(phydev);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(phy_ethtool_sset);
|
|
|
|
int phy_ethtool_ksettings_set(struct phy_device *phydev,
|
|
const struct ethtool_link_ksettings *cmd)
|
|
{
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
|
|
u8 autoneg = cmd->base.autoneg;
|
|
u8 duplex = cmd->base.duplex;
|
|
u32 speed = cmd->base.speed;
|
|
|
|
if (cmd->base.phy_address != phydev->mdio.addr)
|
|
return -EINVAL;
|
|
|
|
linkmode_copy(advertising, cmd->link_modes.advertising);
|
|
|
|
/* We make sure that we don't pass unsupported values in to the PHY */
|
|
linkmode_and(advertising, advertising, phydev->supported);
|
|
|
|
/* Verify the settings we care about. */
|
|
if (autoneg != AUTONEG_ENABLE && autoneg != AUTONEG_DISABLE)
|
|
return -EINVAL;
|
|
|
|
if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising))
|
|
return -EINVAL;
|
|
|
|
if (autoneg == AUTONEG_DISABLE &&
|
|
((speed != SPEED_1000 &&
|
|
speed != SPEED_100 &&
|
|
speed != SPEED_10) ||
|
|
(duplex != DUPLEX_HALF &&
|
|
duplex != DUPLEX_FULL)))
|
|
return -EINVAL;
|
|
|
|
phydev->autoneg = autoneg;
|
|
|
|
phydev->speed = speed;
|
|
|
|
linkmode_copy(phydev->advertising, advertising);
|
|
|
|
if (autoneg == AUTONEG_ENABLE)
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
|
|
phydev->advertising);
|
|
else
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
|
|
phydev->advertising);
|
|
|
|
phydev->duplex = duplex;
|
|
|
|
phydev->mdix_ctrl = cmd->base.eth_tp_mdix_ctrl;
|
|
|
|
/* Restart the PHY */
|
|
phy_start_aneg(phydev);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(phy_ethtool_ksettings_set);
|
|
|
|
void phy_ethtool_ksettings_get(struct phy_device *phydev,
|
|
struct ethtool_link_ksettings *cmd)
|
|
{
|
|
linkmode_copy(cmd->link_modes.supported, phydev->supported);
|
|
linkmode_copy(cmd->link_modes.advertising, phydev->advertising);
|
|
linkmode_copy(cmd->link_modes.lp_advertising, phydev->lp_advertising);
|
|
|
|
cmd->base.speed = phydev->speed;
|
|
cmd->base.duplex = phydev->duplex;
|
|
if (phydev->interface == PHY_INTERFACE_MODE_MOCA)
|
|
cmd->base.port = PORT_BNC;
|
|
else
|
|
cmd->base.port = PORT_MII;
|
|
cmd->base.transceiver = phy_is_internal(phydev) ?
|
|
XCVR_INTERNAL : XCVR_EXTERNAL;
|
|
cmd->base.phy_address = phydev->mdio.addr;
|
|
cmd->base.autoneg = phydev->autoneg;
|
|
cmd->base.eth_tp_mdix_ctrl = phydev->mdix_ctrl;
|
|
cmd->base.eth_tp_mdix = phydev->mdix;
|
|
}
|
|
EXPORT_SYMBOL(phy_ethtool_ksettings_get);
|
|
|
|
/**
|
|
* phy_mii_ioctl - generic PHY MII ioctl interface
|
|
* @phydev: the phy_device struct
|
|
* @ifr: &struct ifreq for socket ioctl's
|
|
* @cmd: ioctl cmd to execute
|
|
*
|
|
* Note that this function is currently incompatible with the
|
|
* PHYCONTROL layer. It changes registers without regard to
|
|
* current state. Use at own risk.
|
|
*/
|
|
int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd)
|
|
{
|
|
struct mii_ioctl_data *mii_data = if_mii(ifr);
|
|
u16 val = mii_data->val_in;
|
|
bool change_autoneg = false;
|
|
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY:
|
|
mii_data->phy_id = phydev->mdio.addr;
|
|
/* fall through */
|
|
|
|
case SIOCGMIIREG:
|
|
mii_data->val_out = mdiobus_read(phydev->mdio.bus,
|
|
mii_data->phy_id,
|
|
mii_data->reg_num);
|
|
return 0;
|
|
|
|
case SIOCSMIIREG:
|
|
if (mii_data->phy_id == phydev->mdio.addr) {
|
|
switch (mii_data->reg_num) {
|
|
case MII_BMCR:
|
|
if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) {
|
|
if (phydev->autoneg == AUTONEG_ENABLE)
|
|
change_autoneg = true;
|
|
phydev->autoneg = AUTONEG_DISABLE;
|
|
if (val & BMCR_FULLDPLX)
|
|
phydev->duplex = DUPLEX_FULL;
|
|
else
|
|
phydev->duplex = DUPLEX_HALF;
|
|
if (val & BMCR_SPEED1000)
|
|
phydev->speed = SPEED_1000;
|
|
else if (val & BMCR_SPEED100)
|
|
phydev->speed = SPEED_100;
|
|
else phydev->speed = SPEED_10;
|
|
}
|
|
else {
|
|
if (phydev->autoneg == AUTONEG_DISABLE)
|
|
change_autoneg = true;
|
|
phydev->autoneg = AUTONEG_ENABLE;
|
|
}
|
|
break;
|
|
case MII_ADVERTISE:
|
|
mii_adv_mod_linkmode_adv_t(phydev->advertising,
|
|
val);
|
|
change_autoneg = true;
|
|
break;
|
|
default:
|
|
/* do nothing */
|
|
break;
|
|
}
|
|
}
|
|
|
|
mdiobus_write(phydev->mdio.bus, mii_data->phy_id,
|
|
mii_data->reg_num, val);
|
|
|
|
if (mii_data->phy_id == phydev->mdio.addr &&
|
|
mii_data->reg_num == MII_BMCR &&
|
|
val & BMCR_RESET)
|
|
return phy_init_hw(phydev);
|
|
|
|
if (change_autoneg)
|
|
return phy_start_aneg(phydev);
|
|
|
|
return 0;
|
|
|
|
case SIOCSHWTSTAMP:
|
|
if (phydev->drv && phydev->drv->hwtstamp)
|
|
return phydev->drv->hwtstamp(phydev, ifr);
|
|
/* fall through */
|
|
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(phy_mii_ioctl);
|
|
|
|
static void phy_queue_state_machine(struct phy_device *phydev,
|
|
unsigned int secs)
|
|
{
|
|
mod_delayed_work(system_power_efficient_wq, &phydev->state_queue,
|
|
secs * HZ);
|
|
}
|
|
|
|
static void phy_trigger_machine(struct phy_device *phydev)
|
|
{
|
|
phy_queue_state_machine(phydev, 0);
|
|
}
|
|
|
|
static int phy_config_aneg(struct phy_device *phydev)
|
|
{
|
|
if (phydev->drv->config_aneg)
|
|
return phydev->drv->config_aneg(phydev);
|
|
|
|
/* Clause 45 PHYs that don't implement Clause 22 registers are not
|
|
* allowed to call genphy_config_aneg()
|
|
*/
|
|
if (phydev->is_c45 && !(phydev->c45_ids.devices_in_package & BIT(0)))
|
|
return -EOPNOTSUPP;
|
|
|
|
return genphy_config_aneg(phydev);
|
|
}
|
|
|
|
/**
|
|
* phy_check_link_status - check link status and set state accordingly
|
|
* @phydev: the phy_device struct
|
|
*
|
|
* Description: Check for link and whether autoneg was triggered / is running
|
|
* and set state accordingly
|
|
*/
|
|
static int phy_check_link_status(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
WARN_ON(!mutex_is_locked(&phydev->lock));
|
|
|
|
err = phy_read_status(phydev);
|
|
if (err)
|
|
return err;
|
|
|
|
if (phydev->link && phydev->state != PHY_RUNNING) {
|
|
phydev->state = PHY_RUNNING;
|
|
phy_link_up(phydev);
|
|
} else if (!phydev->link && phydev->state != PHY_NOLINK) {
|
|
phydev->state = PHY_NOLINK;
|
|
phy_link_down(phydev, true);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* phy_start_aneg - start auto-negotiation for this PHY device
|
|
* @phydev: the phy_device struct
|
|
*
|
|
* Description: Sanitizes the settings (if we're not autonegotiating
|
|
* them), and then calls the driver's config_aneg function.
|
|
* If the PHYCONTROL Layer is operating, we change the state to
|
|
* reflect the beginning of Auto-negotiation or forcing.
|
|
*/
|
|
int phy_start_aneg(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
if (!phydev->drv)
|
|
return -EIO;
|
|
|
|
mutex_lock(&phydev->lock);
|
|
|
|
if (AUTONEG_DISABLE == phydev->autoneg)
|
|
phy_sanitize_settings(phydev);
|
|
|
|
/* Invalidate LP advertising flags */
|
|
linkmode_zero(phydev->lp_advertising);
|
|
|
|
err = phy_config_aneg(phydev);
|
|
if (err < 0)
|
|
goto out_unlock;
|
|
|
|
if (phy_is_started(phydev)) {
|
|
if (phydev->autoneg == AUTONEG_ENABLE) {
|
|
err = phy_check_link_status(phydev);
|
|
} else {
|
|
phydev->state = PHY_FORCING;
|
|
phydev->link_timeout = PHY_FORCE_TIMEOUT;
|
|
}
|
|
}
|
|
|
|
out_unlock:
|
|
mutex_unlock(&phydev->lock);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(phy_start_aneg);
|
|
|
|
static int phy_poll_aneg_done(struct phy_device *phydev)
|
|
{
|
|
unsigned int retries = 100;
|
|
int ret;
|
|
|
|
do {
|
|
msleep(100);
|
|
ret = phy_aneg_done(phydev);
|
|
} while (!ret && --retries);
|
|
|
|
if (!ret)
|
|
return -ETIMEDOUT;
|
|
|
|
return ret < 0 ? ret : 0;
|
|
}
|
|
|
|
/**
|
|
* phy_speed_down - set speed to lowest speed supported by both link partners
|
|
* @phydev: the phy_device struct
|
|
* @sync: perform action synchronously
|
|
*
|
|
* Description: Typically used to save energy when waiting for a WoL packet
|
|
*
|
|
* WARNING: Setting sync to false may cause the system being unable to suspend
|
|
* in case the PHY generates an interrupt when finishing the autonegotiation.
|
|
* This interrupt may wake up the system immediately after suspend.
|
|
* Therefore use sync = false only if you're sure it's safe with the respective
|
|
* network chip.
|
|
*/
|
|
int phy_speed_down(struct phy_device *phydev, bool sync)
|
|
{
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(adv_old);
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(adv);
|
|
int ret;
|
|
|
|
if (phydev->autoneg != AUTONEG_ENABLE)
|
|
return 0;
|
|
|
|
linkmode_copy(adv_old, phydev->advertising);
|
|
linkmode_copy(adv, phydev->lp_advertising);
|
|
linkmode_and(adv, adv, phydev->supported);
|
|
|
|
if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, adv) ||
|
|
linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, adv)) {
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
|
|
phydev->advertising);
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
|
|
phydev->advertising);
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
|
|
phydev->advertising);
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
|
|
phydev->advertising);
|
|
} else if (linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
|
|
adv) ||
|
|
linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
|
|
adv)) {
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
|
|
phydev->advertising);
|
|
linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
|
|
phydev->advertising);
|
|
}
|
|
|
|
if (linkmode_equal(phydev->advertising, adv_old))
|
|
return 0;
|
|
|
|
ret = phy_config_aneg(phydev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return sync ? phy_poll_aneg_done(phydev) : 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(phy_speed_down);
|
|
|
|
/**
|
|
* phy_speed_up - (re)set advertised speeds to all supported speeds
|
|
* @phydev: the phy_device struct
|
|
*
|
|
* Description: Used to revert the effect of phy_speed_down
|
|
*/
|
|
int phy_speed_up(struct phy_device *phydev)
|
|
{
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(all_speeds) = { 0, };
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(not_speeds);
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(adv_old);
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(speeds);
|
|
|
|
linkmode_copy(adv_old, phydev->advertising);
|
|
|
|
if (phydev->autoneg != AUTONEG_ENABLE)
|
|
return 0;
|
|
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, all_speeds);
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, all_speeds);
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, all_speeds);
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, all_speeds);
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, all_speeds);
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, all_speeds);
|
|
|
|
linkmode_andnot(not_speeds, adv_old, all_speeds);
|
|
linkmode_copy(supported, phydev->supported);
|
|
linkmode_and(speeds, supported, all_speeds);
|
|
linkmode_or(phydev->advertising, not_speeds, speeds);
|
|
|
|
if (linkmode_equal(phydev->advertising, adv_old))
|
|
return 0;
|
|
|
|
return phy_config_aneg(phydev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(phy_speed_up);
|
|
|
|
/**
|
|
* phy_start_machine - start PHY state machine tracking
|
|
* @phydev: the phy_device struct
|
|
*
|
|
* Description: The PHY infrastructure can run a state machine
|
|
* which tracks whether the PHY is starting up, negotiating,
|
|
* etc. This function starts the delayed workqueue which tracks
|
|
* the state of the PHY. If you want to maintain your own state machine,
|
|
* do not call this function.
|
|
*/
|
|
void phy_start_machine(struct phy_device *phydev)
|
|
{
|
|
phy_trigger_machine(phydev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(phy_start_machine);
|
|
|
|
/**
|
|
* phy_stop_machine - stop the PHY state machine tracking
|
|
* @phydev: target phy_device struct
|
|
*
|
|
* Description: Stops the state machine delayed workqueue, sets the
|
|
* state to UP (unless it wasn't up yet). This function must be
|
|
* called BEFORE phy_detach.
|
|
*/
|
|
void phy_stop_machine(struct phy_device *phydev)
|
|
{
|
|
cancel_delayed_work_sync(&phydev->state_queue);
|
|
|
|
mutex_lock(&phydev->lock);
|
|
if (phy_is_started(phydev))
|
|
phydev->state = PHY_UP;
|
|
mutex_unlock(&phydev->lock);
|
|
}
|
|
|
|
/**
|
|
* phy_error - enter HALTED state for this PHY device
|
|
* @phydev: target phy_device struct
|
|
*
|
|
* Moves the PHY to the HALTED state in response to a read
|
|
* or write error, and tells the controller the link is down.
|
|
* Must not be called from interrupt context, or while the
|
|
* phydev->lock is held.
|
|
*/
|
|
static void phy_error(struct phy_device *phydev)
|
|
{
|
|
WARN_ON(1);
|
|
|
|
mutex_lock(&phydev->lock);
|
|
phydev->state = PHY_HALTED;
|
|
mutex_unlock(&phydev->lock);
|
|
|
|
phy_trigger_machine(phydev);
|
|
}
|
|
|
|
/**
|
|
* phy_disable_interrupts - Disable the PHY interrupts from the PHY side
|
|
* @phydev: target phy_device struct
|
|
*/
|
|
static int phy_disable_interrupts(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
/* Disable PHY interrupts */
|
|
err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Clear the interrupt */
|
|
return phy_clear_interrupt(phydev);
|
|
}
|
|
|
|
/**
|
|
* phy_interrupt - PHY interrupt handler
|
|
* @irq: interrupt line
|
|
* @phy_dat: phy_device pointer
|
|
*
|
|
* Description: Handle PHY interrupt
|
|
*/
|
|
static irqreturn_t phy_interrupt(int irq, void *phy_dat)
|
|
{
|
|
struct phy_device *phydev = phy_dat;
|
|
|
|
if (phydev->drv->did_interrupt && !phydev->drv->did_interrupt(phydev))
|
|
return IRQ_NONE;
|
|
|
|
/* reschedule state queue work to run as soon as possible */
|
|
phy_trigger_machine(phydev);
|
|
|
|
if (phy_clear_interrupt(phydev))
|
|
goto phy_err;
|
|
return IRQ_HANDLED;
|
|
|
|
phy_err:
|
|
phy_error(phydev);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/**
|
|
* phy_enable_interrupts - Enable the interrupts from the PHY side
|
|
* @phydev: target phy_device struct
|
|
*/
|
|
static int phy_enable_interrupts(struct phy_device *phydev)
|
|
{
|
|
int err = phy_clear_interrupt(phydev);
|
|
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
|
|
}
|
|
|
|
/**
|
|
* phy_request_interrupt - request interrupt for a PHY device
|
|
* @phydev: target phy_device struct
|
|
*
|
|
* Description: Request the interrupt for the given PHY.
|
|
* If this fails, then we set irq to PHY_POLL.
|
|
* This should only be called with a valid IRQ number.
|
|
*/
|
|
void phy_request_interrupt(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
err = request_threaded_irq(phydev->irq, NULL, phy_interrupt,
|
|
IRQF_ONESHOT | IRQF_SHARED,
|
|
phydev_name(phydev), phydev);
|
|
if (err) {
|
|
phydev_warn(phydev, "Error %d requesting IRQ %d, falling back to polling\n",
|
|
err, phydev->irq);
|
|
phydev->irq = PHY_POLL;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(phy_request_interrupt);
|
|
|
|
/**
|
|
* phy_stop - Bring down the PHY link, and stop checking the status
|
|
* @phydev: target phy_device struct
|
|
*/
|
|
void phy_stop(struct phy_device *phydev)
|
|
{
|
|
if (!phy_is_started(phydev)) {
|
|
WARN(1, "called from state %s\n",
|
|
phy_state_to_str(phydev->state));
|
|
return;
|
|
}
|
|
|
|
mutex_lock(&phydev->lock);
|
|
|
|
if (phy_interrupt_is_valid(phydev))
|
|
phy_disable_interrupts(phydev);
|
|
|
|
phydev->state = PHY_HALTED;
|
|
|
|
mutex_unlock(&phydev->lock);
|
|
|
|
phy_state_machine(&phydev->state_queue.work);
|
|
phy_stop_machine(phydev);
|
|
|
|
/* Cannot call flush_scheduled_work() here as desired because
|
|
* of rtnl_lock(), but PHY_HALTED shall guarantee irq handler
|
|
* will not reenable interrupts.
|
|
*/
|
|
}
|
|
EXPORT_SYMBOL(phy_stop);
|
|
|
|
/**
|
|
* phy_start - start or restart a PHY device
|
|
* @phydev: target phy_device struct
|
|
*
|
|
* Description: Indicates the attached device's readiness to
|
|
* handle PHY-related work. Used during startup to start the
|
|
* PHY, and after a call to phy_stop() to resume operation.
|
|
* Also used to indicate the MDIO bus has cleared an error
|
|
* condition.
|
|
*/
|
|
void phy_start(struct phy_device *phydev)
|
|
{
|
|
int err;
|
|
|
|
mutex_lock(&phydev->lock);
|
|
|
|
if (phydev->state != PHY_READY && phydev->state != PHY_HALTED) {
|
|
WARN(1, "called from state %s\n",
|
|
phy_state_to_str(phydev->state));
|
|
goto out;
|
|
}
|
|
|
|
/* if phy was suspended, bring the physical link up again */
|
|
__phy_resume(phydev);
|
|
|
|
/* make sure interrupts are enabled for the PHY */
|
|
if (phy_interrupt_is_valid(phydev)) {
|
|
err = phy_enable_interrupts(phydev);
|
|
if (err < 0)
|
|
goto out;
|
|
}
|
|
|
|
if (phydev->state == PHY_READY)
|
|
phydev->state = PHY_UP;
|
|
else
|
|
phydev->state = PHY_RESUMING;
|
|
|
|
phy_start_machine(phydev);
|
|
out:
|
|
mutex_unlock(&phydev->lock);
|
|
}
|
|
EXPORT_SYMBOL(phy_start);
|
|
|
|
/**
|
|
* phy_state_machine - Handle the state machine
|
|
* @work: work_struct that describes the work to be done
|
|
*/
|
|
void phy_state_machine(struct work_struct *work)
|
|
{
|
|
struct delayed_work *dwork = to_delayed_work(work);
|
|
struct phy_device *phydev =
|
|
container_of(dwork, struct phy_device, state_queue);
|
|
bool needs_aneg = false, do_suspend = false;
|
|
enum phy_state old_state;
|
|
int err = 0;
|
|
|
|
mutex_lock(&phydev->lock);
|
|
|
|
old_state = phydev->state;
|
|
|
|
if (phydev->drv && phydev->drv->link_change_notify)
|
|
phydev->drv->link_change_notify(phydev);
|
|
|
|
switch (phydev->state) {
|
|
case PHY_DOWN:
|
|
case PHY_READY:
|
|
break;
|
|
case PHY_UP:
|
|
needs_aneg = true;
|
|
|
|
break;
|
|
case PHY_NOLINK:
|
|
case PHY_RUNNING:
|
|
case PHY_RESUMING:
|
|
err = phy_check_link_status(phydev);
|
|
break;
|
|
case PHY_FORCING:
|
|
err = genphy_update_link(phydev);
|
|
if (err)
|
|
break;
|
|
|
|
if (phydev->link) {
|
|
phydev->state = PHY_RUNNING;
|
|
phy_link_up(phydev);
|
|
} else {
|
|
if (0 == phydev->link_timeout--)
|
|
needs_aneg = true;
|
|
phy_link_down(phydev, false);
|
|
}
|
|
break;
|
|
case PHY_HALTED:
|
|
if (phydev->link) {
|
|
phydev->link = 0;
|
|
phy_link_down(phydev, true);
|
|
do_suspend = true;
|
|
}
|
|
break;
|
|
}
|
|
|
|
mutex_unlock(&phydev->lock);
|
|
|
|
if (needs_aneg)
|
|
err = phy_start_aneg(phydev);
|
|
else if (do_suspend)
|
|
phy_suspend(phydev);
|
|
|
|
if (err < 0)
|
|
phy_error(phydev);
|
|
|
|
if (old_state != phydev->state)
|
|
phydev_dbg(phydev, "PHY state change %s -> %s\n",
|
|
phy_state_to_str(old_state),
|
|
phy_state_to_str(phydev->state));
|
|
|
|
/* Only re-schedule a PHY state machine change if we are polling the
|
|
* PHY, if PHY_IGNORE_INTERRUPT is set, then we will be moving
|
|
* between states from phy_mac_interrupt().
|
|
*
|
|
* In state PHY_HALTED the PHY gets suspended, so rescheduling the
|
|
* state machine would be pointless and possibly error prone when
|
|
* called from phy_disconnect() synchronously.
|
|
*/
|
|
mutex_lock(&phydev->lock);
|
|
if (phy_polling_mode(phydev) && phy_is_started(phydev))
|
|
phy_queue_state_machine(phydev, PHY_STATE_TIME);
|
|
mutex_unlock(&phydev->lock);
|
|
}
|
|
|
|
/**
|
|
* phy_mac_interrupt - MAC says the link has changed
|
|
* @phydev: phy_device struct with changed link
|
|
*
|
|
* The MAC layer is able to indicate there has been a change in the PHY link
|
|
* status. Trigger the state machine and work a work queue.
|
|
*/
|
|
void phy_mac_interrupt(struct phy_device *phydev)
|
|
{
|
|
/* Trigger a state machine change */
|
|
phy_trigger_machine(phydev);
|
|
}
|
|
EXPORT_SYMBOL(phy_mac_interrupt);
|
|
|
|
static void mmd_eee_adv_to_linkmode(unsigned long *advertising, u16 eee_adv)
|
|
{
|
|
linkmode_zero(advertising);
|
|
|
|
if (eee_adv & MDIO_EEE_100TX)
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
|
|
advertising);
|
|
if (eee_adv & MDIO_EEE_1000T)
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
|
|
advertising);
|
|
if (eee_adv & MDIO_EEE_10GT)
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
|
|
advertising);
|
|
if (eee_adv & MDIO_EEE_1000KX)
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
|
|
advertising);
|
|
if (eee_adv & MDIO_EEE_10GKX4)
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
|
|
advertising);
|
|
if (eee_adv & MDIO_EEE_10GKR)
|
|
linkmode_set_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
|
|
advertising);
|
|
}
|
|
|
|
/**
|
|
* phy_init_eee - init and check the EEE feature
|
|
* @phydev: target phy_device struct
|
|
* @clk_stop_enable: PHY may stop the clock during LPI
|
|
*
|
|
* Description: it checks if the Energy-Efficient Ethernet (EEE)
|
|
* is supported by looking at the MMD registers 3.20 and 7.60/61
|
|
* and it programs the MMD register 3.0 setting the "Clock stop enable"
|
|
* bit if required.
|
|
*/
|
|
int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable)
|
|
{
|
|
if (!phydev->drv)
|
|
return -EIO;
|
|
|
|
/* According to 802.3az,the EEE is supported only in full duplex-mode.
|
|
*/
|
|
if (phydev->duplex == DUPLEX_FULL) {
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(common);
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(lp);
|
|
__ETHTOOL_DECLARE_LINK_MODE_MASK(adv);
|
|
int eee_lp, eee_cap, eee_adv;
|
|
int status;
|
|
u32 cap;
|
|
|
|
/* Read phy status to properly get the right settings */
|
|
status = phy_read_status(phydev);
|
|
if (status)
|
|
return status;
|
|
|
|
/* First check if the EEE ability is supported */
|
|
eee_cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
|
|
if (eee_cap <= 0)
|
|
goto eee_exit_err;
|
|
|
|
cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap);
|
|
if (!cap)
|
|
goto eee_exit_err;
|
|
|
|
/* Check which link settings negotiated and verify it in
|
|
* the EEE advertising registers.
|
|
*/
|
|
eee_lp = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
|
|
if (eee_lp <= 0)
|
|
goto eee_exit_err;
|
|
|
|
eee_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
|
|
if (eee_adv <= 0)
|
|
goto eee_exit_err;
|
|
|
|
mmd_eee_adv_to_linkmode(adv, eee_adv);
|
|
mmd_eee_adv_to_linkmode(lp, eee_lp);
|
|
linkmode_and(common, adv, lp);
|
|
|
|
if (!phy_check_valid(phydev->speed, phydev->duplex, common))
|
|
goto eee_exit_err;
|
|
|
|
if (clk_stop_enable)
|
|
/* Configure the PHY to stop receiving xMII
|
|
* clock while it is signaling LPI.
|
|
*/
|
|
phy_set_bits_mmd(phydev, MDIO_MMD_PCS, MDIO_CTRL1,
|
|
MDIO_PCS_CTRL1_CLKSTOP_EN);
|
|
|
|
return 0; /* EEE supported */
|
|
}
|
|
eee_exit_err:
|
|
return -EPROTONOSUPPORT;
|
|
}
|
|
EXPORT_SYMBOL(phy_init_eee);
|
|
|
|
/**
|
|
* phy_get_eee_err - report the EEE wake error count
|
|
* @phydev: target phy_device struct
|
|
*
|
|
* Description: it is to report the number of time where the PHY
|
|
* failed to complete its normal wake sequence.
|
|
*/
|
|
int phy_get_eee_err(struct phy_device *phydev)
|
|
{
|
|
if (!phydev->drv)
|
|
return -EIO;
|
|
|
|
return phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR);
|
|
}
|
|
EXPORT_SYMBOL(phy_get_eee_err);
|
|
|
|
/**
|
|
* phy_ethtool_get_eee - get EEE supported and status
|
|
* @phydev: target phy_device struct
|
|
* @data: ethtool_eee data
|
|
*
|
|
* Description: it reportes the Supported/Advertisement/LP Advertisement
|
|
* capabilities.
|
|
*/
|
|
int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data)
|
|
{
|
|
int val;
|
|
|
|
if (!phydev->drv)
|
|
return -EIO;
|
|
|
|
/* Get Supported EEE */
|
|
val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
|
|
if (val < 0)
|
|
return val;
|
|
data->supported = mmd_eee_cap_to_ethtool_sup_t(val);
|
|
|
|
/* Get advertisement EEE */
|
|
val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
|
|
if (val < 0)
|
|
return val;
|
|
data->advertised = mmd_eee_adv_to_ethtool_adv_t(val);
|
|
data->eee_enabled = !!data->advertised;
|
|
|
|
/* Get LP advertisement EEE */
|
|
val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
|
|
if (val < 0)
|
|
return val;
|
|
data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val);
|
|
|
|
data->eee_active = !!(data->advertised & data->lp_advertised);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(phy_ethtool_get_eee);
|
|
|
|
/**
|
|
* phy_ethtool_set_eee - set EEE supported and status
|
|
* @phydev: target phy_device struct
|
|
* @data: ethtool_eee data
|
|
*
|
|
* Description: it is to program the Advertisement EEE register.
|
|
*/
|
|
int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data)
|
|
{
|
|
int cap, old_adv, adv = 0, ret;
|
|
|
|
if (!phydev->drv)
|
|
return -EIO;
|
|
|
|
/* Get Supported EEE */
|
|
cap = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
|
|
if (cap < 0)
|
|
return cap;
|
|
|
|
old_adv = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
|
|
if (old_adv < 0)
|
|
return old_adv;
|
|
|
|
if (data->eee_enabled) {
|
|
adv = !data->advertised ? cap :
|
|
ethtool_adv_to_mmd_eee_adv_t(data->advertised) & cap;
|
|
/* Mask prohibited EEE modes */
|
|
adv &= ~phydev->eee_broken_modes;
|
|
}
|
|
|
|
if (old_adv != adv) {
|
|
ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Restart autonegotiation so the new modes get sent to the
|
|
* link partner.
|
|
*/
|
|
ret = phy_restart_aneg(phydev);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(phy_ethtool_set_eee);
|
|
|
|
int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
|
|
{
|
|
if (phydev->drv && phydev->drv->set_wol)
|
|
return phydev->drv->set_wol(phydev, wol);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(phy_ethtool_set_wol);
|
|
|
|
void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)
|
|
{
|
|
if (phydev->drv && phydev->drv->get_wol)
|
|
phydev->drv->get_wol(phydev, wol);
|
|
}
|
|
EXPORT_SYMBOL(phy_ethtool_get_wol);
|
|
|
|
int phy_ethtool_get_link_ksettings(struct net_device *ndev,
|
|
struct ethtool_link_ksettings *cmd)
|
|
{
|
|
struct phy_device *phydev = ndev->phydev;
|
|
|
|
if (!phydev)
|
|
return -ENODEV;
|
|
|
|
phy_ethtool_ksettings_get(phydev, cmd);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(phy_ethtool_get_link_ksettings);
|
|
|
|
int phy_ethtool_set_link_ksettings(struct net_device *ndev,
|
|
const struct ethtool_link_ksettings *cmd)
|
|
{
|
|
struct phy_device *phydev = ndev->phydev;
|
|
|
|
if (!phydev)
|
|
return -ENODEV;
|
|
|
|
return phy_ethtool_ksettings_set(phydev, cmd);
|
|
}
|
|
EXPORT_SYMBOL(phy_ethtool_set_link_ksettings);
|
|
|
|
int phy_ethtool_nway_reset(struct net_device *ndev)
|
|
{
|
|
struct phy_device *phydev = ndev->phydev;
|
|
|
|
if (!phydev)
|
|
return -ENODEV;
|
|
|
|
if (!phydev->drv)
|
|
return -EIO;
|
|
|
|
return phy_restart_aneg(phydev);
|
|
}
|
|
EXPORT_SYMBOL(phy_ethtool_nway_reset);
|