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mdio: Add mdio45_ethtool_spauseparam_an()

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This implements the ETHTOOL_SPAUSEPARAM operation for MDIO (clause 45)
PHYs with auto-negotiation MMDs.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2009-04-29 08:19:36 +00:00 committed by David S. Miller
parent a8c30832b5
commit af2a3eac2f
2 changed files with 33 additions and 0 deletions
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30
drivers/net/mdio.c
View File

@ -274,6 +274,36 @@ void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
}
EXPORT_SYMBOL(mdio45_ethtool_gset_npage);
/**
* mdio45_ethtool_spauseparam_an - set auto-negotiated pause parameters
* @mdio: MDIO interface
* @ecmd: Ethtool request structure
*
* This function assumes that the PHY has an auto-negotiation MMD. It
* will enable and disable advertising of flow control as appropriate.
*/
void mdio45_ethtool_spauseparam_an(const struct mdio_if_info *mdio,
const struct ethtool_pauseparam *ecmd)
{
int adv, old_adv;
WARN_ON(!(mdio->mmds & MDIO_DEVS_AN));
old_adv = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN,
MDIO_AN_ADVERTISE);
adv = old_adv & ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
if (ecmd->autoneg)
adv |= mii_advertise_flowctrl(
(ecmd->rx_pause ? FLOW_CTRL_RX : 0) |
(ecmd->tx_pause ? FLOW_CTRL_TX : 0));
if (adv != old_adv) {
mdio->mdio_write(mdio->dev, mdio->prtad, MDIO_MMD_AN,
MDIO_AN_ADVERTISE, adv);
mdio45_nway_restart(mdio);
}
}
EXPORT_SYMBOL(mdio45_ethtool_spauseparam_an);
/**
* mdio_mii_ioctl - MII ioctl interface for MDIO (clause 22 or 45) PHYs
* @mdio: MDIO interface

3
include/linux/mdio.h
View File

@ -279,6 +279,9 @@ extern int mdio45_nway_restart(const struct mdio_if_info *mdio);
extern void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
struct ethtool_cmd *ecmd,
u32 npage_adv, u32 npage_lpa);
extern void
mdio45_ethtool_spauseparam_an(const struct mdio_if_info *mdio,
const struct ethtool_pauseparam *ecmd);
/**
* mdio45_ethtool_gset - get settings for ETHTOOL_GSET