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Commit af2a3eac2fe6a6d8e9fdf6927284b34466a7d808

Authored by Ben Hutchings
Committed by David S. Miller
1 parent a8c30832b5
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

mdio: Add mdio45_ethtool_spauseparam_an() 

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>

Showing 2 changed files with 33 additions and 0 deletions Side-by-side Diff

... ... @@ -275,6 +275,36 @@
275 275 EXPORT_SYMBOL(mdio45_ethtool_gset_npage);
276 276  
277 277 /**
  278 + * mdio45_ethtool_spauseparam_an - set auto-negotiated pause parameters
  279 + * @mdio: MDIO interface
  280 + * @ecmd: Ethtool request structure
  281 + *
  282 + * This function assumes that the PHY has an auto-negotiation MMD. It
  283 + * will enable and disable advertising of flow control as appropriate.
  284 + */
  285 +void mdio45_ethtool_spauseparam_an(const struct mdio_if_info *mdio,
  286 + const struct ethtool_pauseparam *ecmd)
  287 +{
  288 + int adv, old_adv;
  289 +
  290 + WARN_ON(!(mdio->mmds & MDIO_DEVS_AN));
  291 +
  292 + old_adv = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN,
  293 + MDIO_AN_ADVERTISE);
  294 + adv = old_adv & ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
  295 + if (ecmd->autoneg)
  296 + adv |= mii_advertise_flowctrl(
  297 + (ecmd->rx_pause ? FLOW_CTRL_RX : 0) |
  298 + (ecmd->tx_pause ? FLOW_CTRL_TX : 0));
  299 + if (adv != old_adv) {
  300 + mdio->mdio_write(mdio->dev, mdio->prtad, MDIO_MMD_AN,
  301 + MDIO_AN_ADVERTISE, adv);
  302 + mdio45_nway_restart(mdio);
  303 + }
  304 +}
  305 +EXPORT_SYMBOL(mdio45_ethtool_spauseparam_an);
  306 +
  307 +/**
278 308 * mdio_mii_ioctl - MII ioctl interface for MDIO (clause 22 or 45) PHYs
279 309 * @mdio: MDIO interface
280 310 * @mii_data: MII ioctl data structure
include/linux/mdio.h
Diff comments   View file @ af2a3ea
... ... @@ -279,6 +279,9 @@
279 279 extern void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
280 280 struct ethtool_cmd *ecmd,
281 281 u32 npage_adv, u32 npage_lpa);
  282 +extern void
  283 +mdio45_ethtool_spauseparam_an(const struct mdio_if_info *mdio,
  284 + const struct ethtool_pauseparam *ecmd);
282 285  
283 286 /**
284 287 * mdio45_ethtool_gset - get settings for ETHTOOL_GSET