// SPDX-License-Identifier: GPL-2.0-only/* * mdio.c: Generic support for MDIO-compatible transceivers * Copyright 2006-2009 Solarflare Communications Inc. */ #include <linux/kernel.h>#include <linux/capability.h>#include <linux/errno.h>#include <linux/ethtool.h>#include <linux/mdio.h>#include <linux/module.h> MODULE_DESCRIPTION("Generic support for MDIO-compatible transceivers");MODULE_AUTHOR("Copyright 2006-2009 Solarflare Communications Inc.");MODULE_LICENSE("GPL"); /** * mdio45_probe - probe for an MDIO (clause 45) device * @mdio: MDIO interface * @prtad: Expected PHY address * * This sets @prtad and @mmds in the MDIO interface if successful. * Returns 0 on success, negative on error. */int mdio45_probe(struct mdio_if_info *mdio, int prtad){ int mmd, stat2, devs1, devs2; /* Assume PHY must have at least one of PMA/PMD, WIS, PCS, PHY * XS or DTE XS; give up if none is present. */ for (mmd = 1; mmd <= 5; mmd++) { /* Is this MMD present? */ stat2 = mdio->mdio_read(mdio->dev, prtad, mmd, MDIO_STAT2); if (stat2 < 0 || (stat2 & MDIO_STAT2_DEVPRST) != MDIO_STAT2_DEVPRST_VAL) continue; /* It should tell us about all the other MMDs */ devs1 = mdio->mdio_read(mdio->dev, prtad, mmd, MDIO_DEVS1); devs2 = mdio->mdio_read(mdio->dev, prtad, mmd, MDIO_DEVS2); if (devs1 < 0 || devs2 < 0) continue; mdio->prtad = prtad; mdio->mmds = devs1 | (devs2 << 16); return 0; } return -ENODEV;}EXPORT_SYMBOL(mdio45_probe); /** * mdio_set_flag - set or clear flag in an MDIO register * @mdio: MDIO interface * @prtad: PHY address * @devad: MMD address * @addr: Register address * @mask: Mask for flag (single bit set) * @sense: New value of flag * * This debounces changes: it does not write the register if the flag * already has the proper value. Returns 0 on success, negative on error. */int mdio_set_flag(const struct mdio_if_info *mdio, int prtad, int devad, u16 addr, int mask, bool sense){ int old_val = mdio->mdio_read(mdio->dev, prtad, devad, addr); int new_val; if (old_val < 0) return old_val; if (sense) new_val = old_val | mask; else new_val = old_val & ~mask; if (old_val == new_val) return 0; return mdio->mdio_write(mdio->dev, prtad, devad, addr, new_val);}EXPORT_SYMBOL(mdio_set_flag); /** * mdio45_links_ok - is link status up/OK * @mdio: MDIO interface * @mmd_mask: Mask for MMDs to check * * Returns 1 if the PHY reports link status up/OK, 0 otherwise. * @mmd_mask is normally @mdio->mmds, but if loopback is enabled * the MMDs being bypassed should be excluded from the mask. */int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmd_mask){ int devad, reg; if (!mmd_mask) { /* Use absence of XGMII faults in lieu of link state */ reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PHYXS, MDIO_STAT2); return reg >= 0 && !(reg & MDIO_STAT2_RXFAULT); } for (devad = 0; mmd_mask; devad++) { if (mmd_mask & (1 << devad)) { mmd_mask &= ~(1 << devad); /* Reset the latched status and fault flags */ mdio->mdio_read(mdio->dev, mdio->prtad, devad, MDIO_STAT1); if (devad == MDIO_MMD_PMAPMD || devad == MDIO_MMD_PCS || devad == MDIO_MMD_PHYXS || devad == MDIO_MMD_DTEXS) mdio->mdio_read(mdio->dev, mdio->prtad, devad, MDIO_STAT2); /* Check the current status and fault flags */ reg = mdio->mdio_read(mdio->dev, mdio->prtad, devad, MDIO_STAT1); if (reg < 0 || (reg & (MDIO_STAT1_FAULT | MDIO_STAT1_LSTATUS)) != MDIO_STAT1_LSTATUS) return false; } } return true;}EXPORT_SYMBOL(mdio45_links_ok); /** * mdio45_nway_restart - restart auto-negotiation for this interface * @mdio: MDIO interface * * Returns 0 on success, negative on error. */int mdio45_nway_restart(const struct mdio_if_info *mdio){ if (!(mdio->mmds & MDIO_DEVS_AN)) return -EOPNOTSUPP; mdio_set_flag(mdio, mdio->prtad, MDIO_MMD_AN, MDIO_CTRL1, MDIO_AN_CTRL1_RESTART, true); return 0;}EXPORT_SYMBOL(mdio45_nway_restart); static u32 mdio45_get_an(const struct mdio_if_info *mdio, u16 addr){ u32 result = 0; int reg; reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN, addr); if (reg & ADVERTISE_10HALF) result |= ADVERTISED_10baseT_Half; if (reg & ADVERTISE_10FULL) result |= ADVERTISED_10baseT_Full; if (reg & ADVERTISE_100HALF) result |= ADVERTISED_100baseT_Half; if (reg & ADVERTISE_100FULL) result |= ADVERTISED_100baseT_Full; if (reg & ADVERTISE_PAUSE_CAP) result |= ADVERTISED_Pause; if (reg & ADVERTISE_PAUSE_ASYM) result |= ADVERTISED_Asym_Pause; return result;} /** * mdio45_ethtool_ksettings_get_npage - get settings for ETHTOOL_GLINKSETTINGS * @mdio: MDIO interface * @cmd: Ethtool request structure * @npage_adv: Modes currently advertised on next pages * @npage_lpa: Modes advertised by link partner on next pages * * The @cmd parameter is expected to have been cleared before calling * mdio45_ethtool_ksettings_get_npage(). * * Since the CSRs for auto-negotiation using next pages are not fully * standardised, this function does not attempt to decode them. The * caller must pass them in. */void mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio, struct ethtool_link_ksettings *cmd, u32 npage_adv, u32 npage_lpa){ int reg; u32 speed, supported = 0, advertising = 0, lp_advertising = 0; BUILD_BUG_ON(MDIO_SUPPORTS_C22 != ETH_MDIO_SUPPORTS_C22); BUILD_BUG_ON(MDIO_SUPPORTS_C45 != ETH_MDIO_SUPPORTS_C45); cmd->base.phy_address = mdio->prtad; cmd->base.mdio_support = mdio->mode_support & (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22); reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD, MDIO_CTRL2); switch (reg & MDIO_PMA_CTRL2_TYPE) { case MDIO_PMA_CTRL2_10GBT: case MDIO_PMA_CTRL2_1000BT: case MDIO_PMA_CTRL2_100BTX: case MDIO_PMA_CTRL2_10BT: cmd->base.port = PORT_TP; supported = SUPPORTED_TP; reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD, MDIO_SPEED); if (reg & MDIO_SPEED_10G) supported |= SUPPORTED_10000baseT_Full; if (reg & MDIO_PMA_SPEED_1000) supported |= (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseT_Half); if (reg & MDIO_PMA_SPEED_100) supported |= (SUPPORTED_100baseT_Full | SUPPORTED_100baseT_Half); if (reg & MDIO_PMA_SPEED_10) supported |= (SUPPORTED_10baseT_Full | SUPPORTED_10baseT_Half); advertising = ADVERTISED_TP; break; case MDIO_PMA_CTRL2_10GBCX4: cmd->base.port = PORT_OTHER; supported = 0; advertising = 0; break; case MDIO_PMA_CTRL2_10GBKX4: case MDIO_PMA_CTRL2_10GBKR: case MDIO_PMA_CTRL2_1000BKX: cmd->base.port = PORT_OTHER; supported = SUPPORTED_Backplane; reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD, MDIO_PMA_EXTABLE); if (reg & MDIO_PMA_EXTABLE_10GBKX4) supported |= SUPPORTED_10000baseKX4_Full; if (reg & MDIO_PMA_EXTABLE_10GBKR) supported |= SUPPORTED_10000baseKR_Full; if (reg & MDIO_PMA_EXTABLE_1000BKX) supported |= SUPPORTED_1000baseKX_Full; reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_FECABLE); if (reg & MDIO_PMA_10GBR_FECABLE_ABLE) supported |= SUPPORTED_10000baseR_FEC; advertising = ADVERTISED_Backplane; break; /* All the other defined modes are flavours of optical */ default: cmd->base.port = PORT_FIBRE; supported = SUPPORTED_FIBRE; advertising = ADVERTISED_FIBRE; break; } if (mdio->mmds & MDIO_DEVS_AN) { supported |= SUPPORTED_Autoneg; reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN, MDIO_CTRL1); if (reg & MDIO_AN_CTRL1_ENABLE) { cmd->base.autoneg = AUTONEG_ENABLE; advertising |= ADVERTISED_Autoneg | mdio45_get_an(mdio, MDIO_AN_ADVERTISE) | npage_adv; } else { cmd->base.autoneg = AUTONEG_DISABLE; } } else { cmd->base.autoneg = AUTONEG_DISABLE; } if (cmd->base.autoneg) { u32 modes = 0; int an_stat = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN, MDIO_STAT1); /* If AN is complete and successful, report best common * mode, otherwise report best advertised mode. */ if (an_stat & MDIO_AN_STAT1_COMPLETE) { lp_advertising = mdio45_get_an(mdio, MDIO_AN_LPA) | npage_lpa; if (an_stat & MDIO_AN_STAT1_LPABLE) lp_advertising |= ADVERTISED_Autoneg; modes = advertising & lp_advertising; } if ((modes & ~ADVERTISED_Autoneg) == 0) modes = advertising; if (modes & (ADVERTISED_10000baseT_Full | ADVERTISED_10000baseKX4_Full | ADVERTISED_10000baseKR_Full)) { speed = SPEED_10000; cmd->base.duplex = DUPLEX_FULL; } else if (modes & (ADVERTISED_1000baseT_Full | ADVERTISED_1000baseT_Half | ADVERTISED_1000baseKX_Full)) { speed = SPEED_1000; cmd->base.duplex = !(modes & ADVERTISED_1000baseT_Half); } else if (modes & (ADVERTISED_100baseT_Full | ADVERTISED_100baseT_Half)) { speed = SPEED_100; cmd->base.duplex = !!(modes & ADVERTISED_100baseT_Full); } else { speed = SPEED_10; cmd->base.duplex = !!(modes & ADVERTISED_10baseT_Full); } } else { /* Report forced settings */ reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD, MDIO_CTRL1); speed = (((reg & MDIO_PMA_CTRL1_SPEED1000) ? 100 : 1) * ((reg & MDIO_PMA_CTRL1_SPEED100) ? 100 : 10)); cmd->base.duplex = (reg & MDIO_CTRL1_FULLDPLX || speed == SPEED_10000); } cmd->base.speed = speed; ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, supported); ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, advertising); ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising, lp_advertising); /* 10GBASE-T MDI/MDI-X */ if (cmd->base.port == PORT_TP && (cmd->base.speed == SPEED_10000)) { switch (mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD, MDIO_PMA_10GBT_SWAPPOL)) { case MDIO_PMA_10GBT_SWAPPOL_ABNX | MDIO_PMA_10GBT_SWAPPOL_CDNX: cmd->base.eth_tp_mdix = ETH_TP_MDI; break; case 0: cmd->base.eth_tp_mdix = ETH_TP_MDI_X; break; default: /* It's complicated... */ cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; break; } }}EXPORT_SYMBOL(mdio45_ethtool_ksettings_get_npage); /** * mdio_mii_ioctl - MII ioctl interface for MDIO (clause 22 or 45) PHYs * @mdio: MDIO interface * @mii_data: MII ioctl data structure * @cmd: MII ioctl command * * Returns 0 on success, negative on error. */int mdio_mii_ioctl(const struct mdio_if_info *mdio, struct mii_ioctl_data *mii_data, int cmd){ int prtad, devad; u16 addr = mii_data->reg_num; /* Validate/convert cmd to one of SIOC{G,S}MIIREG */ switch (cmd) { case SIOCGMIIPHY: if (mdio->prtad == MDIO_PRTAD_NONE) return -EOPNOTSUPP; mii_data->phy_id = mdio->prtad; cmd = SIOCGMIIREG; break; case SIOCGMIIREG: case SIOCSMIIREG: break; default: return -EOPNOTSUPP; } /* Validate/convert phy_id */ if ((mdio->mode_support & MDIO_SUPPORTS_C45) && mdio_phy_id_is_c45(mii_data->phy_id)) { prtad = mdio_phy_id_prtad(mii_data->phy_id); devad = mdio_phy_id_devad(mii_data->phy_id); } else if ((mdio->mode_support & MDIO_SUPPORTS_C22) && mii_data->phy_id < 0x20) { prtad = mii_data->phy_id; devad = MDIO_DEVAD_NONE; addr &= 0x1f; } else if ((mdio->mode_support & MDIO_EMULATE_C22) && mdio->prtad != MDIO_PRTAD_NONE && mii_data->phy_id == mdio->prtad) { /* Remap commonly-used MII registers. */ prtad = mdio->prtad; switch (addr) { case MII_BMCR: case MII_BMSR: case MII_PHYSID1: case MII_PHYSID2: devad = __ffs(mdio->mmds); break; case MII_ADVERTISE: case MII_LPA: if (!(mdio->mmds & MDIO_DEVS_AN)) return -EINVAL; devad = MDIO_MMD_AN; if (addr == MII_ADVERTISE) addr = MDIO_AN_ADVERTISE; else addr = MDIO_AN_LPA; break; default: return -EINVAL; } } else { return -EINVAL; } if (cmd == SIOCGMIIREG) { int rc = mdio->mdio_read(mdio->dev, prtad, devad, addr); if (rc < 0) return rc; mii_data->val_out = rc; return 0; } else { return mdio->mdio_write(mdio->dev, prtad, devad, addr, mii_data->val_in); }}EXPORT_SYMBOL(mdio_mii_ioctl);
// SPDX-License-Identifier: GPL-2.0-only
/*
* mdio.c: Generic support for MDIO-compatible transceivers
* Copyright 2006-2009 Solarflare Communications Inc.
*/
#include <linux/kernel.h>
#include <linux/capability.h>
#include <linux/errno.h>
#include <linux/ethtool.h>
#include <linux/mdio.h>
#include <linux/module.h>
MODULE_DESCRIPTION("Generic support for MDIO-compatible transceivers");
MODULE_AUTHOR("Copyright 2006-2009 Solarflare Communications Inc.");
MODULE_LICENSE("GPL");
/**
* mdio45_probe - probe for an MDIO (clause 45) device
* @mdio: MDIO interface
* @prtad: Expected PHY address
*
* This sets @prtad and @mmds in the MDIO interface if successful.
* Returns 0 on success, negative on error.
*/
int mdio45_probe(struct mdio_if_info *mdio, int prtad)
{
int mmd, stat2, devs1, devs2;
/* Assume PHY must have at least one of PMA/PMD, WIS, PCS, PHY
* XS or DTE XS; give up if none is present. */
for (mmd = 1; mmd <= 5; mmd++) {
/* Is this MMD present? */
stat2 = mdio->mdio_read(mdio->dev, prtad, mmd, MDIO_STAT2);
if (stat2 < 0 ||
(stat2 & MDIO_STAT2_DEVPRST) != MDIO_STAT2_DEVPRST_VAL)
continue;
/* It should tell us about all the other MMDs */
devs1 = mdio->mdio_read(mdio->dev, prtad, mmd, MDIO_DEVS1);
devs2 = mdio->mdio_read(mdio->dev, prtad, mmd, MDIO_DEVS2);
if (devs1 < 0 || devs2 < 0)
continue;
mdio->prtad = prtad;
mdio->mmds = devs1 | (devs2 << 16);
return 0;
}
return -ENODEV;
}
EXPORT_SYMBOL(mdio45_probe);
/**
* mdio_set_flag - set or clear flag in an MDIO register
* @mdio: MDIO interface
* @prtad: PHY address
* @devad: MMD address
* @addr: Register address
* @mask: Mask for flag (single bit set)
* @sense: New value of flag
*
* This debounces changes: it does not write the register if the flag
* already has the proper value. Returns 0 on success, negative on error.
*/
int mdio_set_flag(const struct mdio_if_info *mdio,
int prtad, int devad, u16 addr, int mask,
bool sense)
{
int old_val = mdio->mdio_read(mdio->dev, prtad, devad, addr);
int new_val;
if (old_val < 0)
return old_val;
if (sense)
new_val = old_val | mask;
else
new_val = old_val & ~mask;
if (old_val == new_val)
return 0;
return mdio->mdio_write(mdio->dev, prtad, devad, addr, new_val);
}
EXPORT_SYMBOL(mdio_set_flag);
/**
* mdio45_links_ok - is link status up/OK
* @mdio: MDIO interface
* @mmd_mask: Mask for MMDs to check
*
* Returns 1 if the PHY reports link status up/OK, 0 otherwise.
* @mmd_mask is normally @mdio->mmds, but if loopback is enabled
* the MMDs being bypassed should be excluded from the mask.
*/
int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmd_mask)
{
int devad, reg;
if (!mmd_mask) {
/* Use absence of XGMII faults in lieu of link state */
reg = mdio->mdio_read(mdio->dev, mdio->prtad,
MDIO_MMD_PHYXS, MDIO_STAT2);
return reg >= 0 && !(reg & MDIO_STAT2_RXFAULT);
}
for (devad = 0; mmd_mask; devad++) {
if (mmd_mask & (1 << devad)) {
mmd_mask &= ~(1 << devad);
/* Reset the latched status and fault flags */
mdio->mdio_read(mdio->dev, mdio->prtad,
devad, MDIO_STAT1);
if (devad == MDIO_MMD_PMAPMD || devad == MDIO_MMD_PCS ||
devad == MDIO_MMD_PHYXS || devad == MDIO_MMD_DTEXS)
mdio->mdio_read(mdio->dev, mdio->prtad,
devad, MDIO_STAT2);
/* Check the current status and fault flags */
reg = mdio->mdio_read(mdio->dev, mdio->prtad,
devad, MDIO_STAT1);
if (reg < 0 ||
(reg & (MDIO_STAT1_FAULT | MDIO_STAT1_LSTATUS)) !=
MDIO_STAT1_LSTATUS)
return false;
}
}
return true;
}
EXPORT_SYMBOL(mdio45_links_ok);
/**
* mdio45_nway_restart - restart auto-negotiation for this interface
* @mdio: MDIO interface
*
* Returns 0 on success, negative on error.
*/
int mdio45_nway_restart(const struct mdio_if_info *mdio)
{
if (!(mdio->mmds & MDIO_DEVS_AN))
return -EOPNOTSUPP;
mdio_set_flag(mdio, mdio->prtad, MDIO_MMD_AN, MDIO_CTRL1,
MDIO_AN_CTRL1_RESTART, true);
return 0;
}
EXPORT_SYMBOL(mdio45_nway_restart);
static u32 mdio45_get_an(const struct mdio_if_info *mdio, u16 addr)
{
u32 result = 0;
int reg;
reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN, addr);
if (reg & ADVERTISE_10HALF)
result |= ADVERTISED_10baseT_Half;
if (reg & ADVERTISE_10FULL)
result |= ADVERTISED_10baseT_Full;
if (reg & ADVERTISE_100HALF)
result |= ADVERTISED_100baseT_Half;
if (reg & ADVERTISE_100FULL)
result |= ADVERTISED_100baseT_Full;
if (reg & ADVERTISE_PAUSE_CAP)
result |= ADVERTISED_Pause;
if (reg & ADVERTISE_PAUSE_ASYM)
result |= ADVERTISED_Asym_Pause;
return result;
}
/**
* mdio45_ethtool_ksettings_get_npage - get settings for ETHTOOL_GLINKSETTINGS
* @mdio: MDIO interface
* @cmd: Ethtool request structure
* @npage_adv: Modes currently advertised on next pages
* @npage_lpa: Modes advertised by link partner on next pages
*
* The @cmd parameter is expected to have been cleared before calling
* mdio45_ethtool_ksettings_get_npage().
*
* Since the CSRs for auto-negotiation using next pages are not fully
* standardised, this function does not attempt to decode them. The
* caller must pass them in.
*/
void mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio,
struct ethtool_link_ksettings *cmd,
u32 npage_adv, u32 npage_lpa)
{
int reg;
u32 speed, supported = 0, advertising = 0, lp_advertising = 0;
BUILD_BUG_ON(MDIO_SUPPORTS_C22 != ETH_MDIO_SUPPORTS_C22);
BUILD_BUG_ON(MDIO_SUPPORTS_C45 != ETH_MDIO_SUPPORTS_C45);
cmd->base.phy_address = mdio->prtad;
cmd->base.mdio_support =
mdio->mode_support & (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22);
reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
MDIO_CTRL2);
switch (reg & MDIO_PMA_CTRL2_TYPE) {
case MDIO_PMA_CTRL2_10GBT:
case MDIO_PMA_CTRL2_1000BT:
case MDIO_PMA_CTRL2_100BTX:
case MDIO_PMA_CTRL2_10BT:
cmd->base.port = PORT_TP;
supported = SUPPORTED_TP;
reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
MDIO_SPEED);
if (reg & MDIO_SPEED_10G)
supported |= SUPPORTED_10000baseT_Full;
if (reg & MDIO_PMA_SPEED_1000)
supported |= (SUPPORTED_1000baseT_Full |
SUPPORTED_1000baseT_Half);
if (reg & MDIO_PMA_SPEED_100)
supported |= (SUPPORTED_100baseT_Full |
SUPPORTED_100baseT_Half);
if (reg & MDIO_PMA_SPEED_10)
supported |= (SUPPORTED_10baseT_Full |
SUPPORTED_10baseT_Half);
advertising = ADVERTISED_TP;
break;
case MDIO_PMA_CTRL2_10GBCX4:
cmd->base.port = PORT_OTHER;
supported = 0;
advertising = 0;
break;
case MDIO_PMA_CTRL2_10GBKX4:
case MDIO_PMA_CTRL2_10GBKR:
case MDIO_PMA_CTRL2_1000BKX:
cmd->base.port = PORT_OTHER;
supported = SUPPORTED_Backplane;
reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
MDIO_PMA_EXTABLE);
if (reg & MDIO_PMA_EXTABLE_10GBKX4)
supported |= SUPPORTED_10000baseKX4_Full;
if (reg & MDIO_PMA_EXTABLE_10GBKR)
supported |= SUPPORTED_10000baseKR_Full;
if (reg & MDIO_PMA_EXTABLE_1000BKX)
supported |= SUPPORTED_1000baseKX_Full;
reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
MDIO_PMA_10GBR_FECABLE);
if (reg & MDIO_PMA_10GBR_FECABLE_ABLE)
supported |= SUPPORTED_10000baseR_FEC;
advertising = ADVERTISED_Backplane;
break;
/* All the other defined modes are flavours of optical */
default:
cmd->base.port = PORT_FIBRE;
supported = SUPPORTED_FIBRE;
advertising = ADVERTISED_FIBRE;
break;
}
if (mdio->mmds & MDIO_DEVS_AN) {
supported |= SUPPORTED_Autoneg;
reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN,
MDIO_CTRL1);
if (reg & MDIO_AN_CTRL1_ENABLE) {
cmd->base.autoneg = AUTONEG_ENABLE;
advertising |=
ADVERTISED_Autoneg |
mdio45_get_an(mdio, MDIO_AN_ADVERTISE) |
npage_adv;
} else {
cmd->base.autoneg = AUTONEG_DISABLE;
}
} else {
cmd->base.autoneg = AUTONEG_DISABLE;
}
if (cmd->base.autoneg) {
u32 modes = 0;
int an_stat = mdio->mdio_read(mdio->dev, mdio->prtad,
MDIO_MMD_AN, MDIO_STAT1);
/* If AN is complete and successful, report best common
* mode, otherwise report best advertised mode.
*/
if (an_stat & MDIO_AN_STAT1_COMPLETE) {
lp_advertising =
mdio45_get_an(mdio, MDIO_AN_LPA) | npage_lpa;
if (an_stat & MDIO_AN_STAT1_LPABLE)
lp_advertising |= ADVERTISED_Autoneg;
modes = advertising & lp_advertising;
}
if ((modes & ~ADVERTISED_Autoneg) == 0)
modes = advertising;
if (modes & (ADVERTISED_10000baseT_Full |
ADVERTISED_10000baseKX4_Full |
ADVERTISED_10000baseKR_Full)) {
speed = SPEED_10000;
cmd->base.duplex = DUPLEX_FULL;
} else if (modes & (ADVERTISED_1000baseT_Full |
ADVERTISED_1000baseT_Half |
ADVERTISED_1000baseKX_Full)) {
speed = SPEED_1000;
cmd->base.duplex = !(modes & ADVERTISED_1000baseT_Half);
} else if (modes & (ADVERTISED_100baseT_Full |
ADVERTISED_100baseT_Half)) {
speed = SPEED_100;
cmd->base.duplex = !!(modes & ADVERTISED_100baseT_Full);
} else {
speed = SPEED_10;
cmd->base.duplex = !!(modes & ADVERTISED_10baseT_Full);
}
} else {
/* Report forced settings */
reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
MDIO_CTRL1);
speed = (((reg & MDIO_PMA_CTRL1_SPEED1000) ? 100 : 1)
* ((reg & MDIO_PMA_CTRL1_SPEED100) ? 100 : 10));
cmd->base.duplex = (reg & MDIO_CTRL1_FULLDPLX ||
speed == SPEED_10000);
}
cmd->base.speed = speed;
ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
supported);
ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
advertising);
ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
lp_advertising);
/* 10GBASE-T MDI/MDI-X */
if (cmd->base.port == PORT_TP && (cmd->base.speed == SPEED_10000)) {
switch (mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
MDIO_PMA_10GBT_SWAPPOL)) {
case MDIO_PMA_10GBT_SWAPPOL_ABNX | MDIO_PMA_10GBT_SWAPPOL_CDNX:
cmd->base.eth_tp_mdix = ETH_TP_MDI;
break;
case 0:
cmd->base.eth_tp_mdix = ETH_TP_MDI_X;
break;
default:
/* It's complicated... */
cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
break;
}
}
}
EXPORT_SYMBOL(mdio45_ethtool_ksettings_get_npage);
/**
* mdio_mii_ioctl - MII ioctl interface for MDIO (clause 22 or 45) PHYs
* @mdio: MDIO interface
* @mii_data: MII ioctl data structure
* @cmd: MII ioctl command
*
* Returns 0 on success, negative on error.
*/
int mdio_mii_ioctl(const struct mdio_if_info *mdio,
struct mii_ioctl_data *mii_data, int cmd)
{
int prtad, devad;
u16 addr = mii_data->reg_num;
/* Validate/convert cmd to one of SIOC{G,S}MIIREG */
switch (cmd) {
case SIOCGMIIPHY:
if (mdio->prtad == MDIO_PRTAD_NONE)
return -EOPNOTSUPP;
mii_data->phy_id = mdio->prtad;
cmd = SIOCGMIIREG;
break;
case SIOCGMIIREG:
case SIOCSMIIREG:
break;
default:
return -EOPNOTSUPP;
}
/* Validate/convert phy_id */
if ((mdio->mode_support & MDIO_SUPPORTS_C45) &&
mdio_phy_id_is_c45(mii_data->phy_id)) {
prtad = mdio_phy_id_prtad(mii_data->phy_id);
devad = mdio_phy_id_devad(mii_data->phy_id);
} else if ((mdio->mode_support & MDIO_SUPPORTS_C22) &&
mii_data->phy_id < 0x20) {
prtad = mii_data->phy_id;
devad = MDIO_DEVAD_NONE;
addr &= 0x1f;
} else if ((mdio->mode_support & MDIO_EMULATE_C22) &&
mdio->prtad != MDIO_PRTAD_NONE &&
mii_data->phy_id == mdio->prtad) {
/* Remap commonly-used MII registers. */
prtad = mdio->prtad;
switch (addr) {
case MII_BMCR:
case MII_BMSR:
case MII_PHYSID1:
case MII_PHYSID2:
devad = __ffs(mdio->mmds);
break;
case MII_ADVERTISE:
case MII_LPA:
if (!(mdio->mmds & MDIO_DEVS_AN))
return -EINVAL;
devad = MDIO_MMD_AN;
if (addr == MII_ADVERTISE)
addr = MDIO_AN_ADVERTISE;
else
addr = MDIO_AN_LPA;
break;
default:
return -EINVAL;
}
} else {
return -EINVAL;
}
if (cmd == SIOCGMIIREG) {
int rc = mdio->mdio_read(mdio->dev, prtad, devad, addr);
if (rc < 0)
return rc;
mii_data->val_out = rc;
return 0;
} else {
return mdio->mdio_write(mdio->dev, prtad, devad, addr,
mii_data->val_in);
}
}
EXPORT_SYMBOL(mdio_mii_ioctl);