344 lines
8.7 KiB
C
344 lines
8.7 KiB
C
/*
|
|
* linux/mii.h: definitions for MII-compatible transceivers
|
|
* Originally drivers/net/sunhme.h.
|
|
*
|
|
* Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com)
|
|
*/
|
|
#ifndef __LINUX_MII_H__
|
|
#define __LINUX_MII_H__
|
|
|
|
|
|
#include <linux/if.h>
|
|
#include <uapi/linux/mii.h>
|
|
|
|
struct ethtool_cmd;
|
|
|
|
struct mii_if_info {
|
|
int phy_id;
|
|
int advertising;
|
|
int phy_id_mask;
|
|
int reg_num_mask;
|
|
|
|
unsigned int full_duplex : 1; /* is full duplex? */
|
|
unsigned int force_media : 1; /* is autoneg. disabled? */
|
|
unsigned int supports_gmii : 1; /* are GMII registers supported? */
|
|
|
|
struct net_device *dev;
|
|
int (*mdio_read) (struct net_device *dev, int phy_id, int location);
|
|
void (*mdio_write) (struct net_device *dev, int phy_id, int location, int val);
|
|
};
|
|
|
|
extern int mii_link_ok (struct mii_if_info *mii);
|
|
extern int mii_nway_restart (struct mii_if_info *mii);
|
|
extern int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd);
|
|
extern void mii_ethtool_get_link_ksettings(
|
|
struct mii_if_info *mii, struct ethtool_link_ksettings *cmd);
|
|
extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd);
|
|
extern int mii_ethtool_set_link_ksettings(
|
|
struct mii_if_info *mii, const struct ethtool_link_ksettings *cmd);
|
|
extern int mii_check_gmii_support(struct mii_if_info *mii);
|
|
extern void mii_check_link (struct mii_if_info *mii);
|
|
extern unsigned int mii_check_media (struct mii_if_info *mii,
|
|
unsigned int ok_to_print,
|
|
unsigned int init_media);
|
|
extern int generic_mii_ioctl(struct mii_if_info *mii_if,
|
|
struct mii_ioctl_data *mii_data, int cmd,
|
|
unsigned int *duplex_changed);
|
|
|
|
|
|
static inline struct mii_ioctl_data *if_mii(struct ifreq *rq)
|
|
{
|
|
return (struct mii_ioctl_data *) &rq->ifr_ifru;
|
|
}
|
|
|
|
/**
|
|
* mii_nway_result
|
|
* @negotiated: value of MII ANAR and'd with ANLPAR
|
|
*
|
|
* Given a set of MII abilities, check each bit and returns the
|
|
* currently supported media, in the priority order defined by
|
|
* IEEE 802.3u. We use LPA_xxx constants but note this is not the
|
|
* value of LPA solely, as described above.
|
|
*
|
|
* The one exception to IEEE 802.3u is that 100baseT4 is placed
|
|
* between 100T-full and 100T-half. If your phy does not support
|
|
* 100T4 this is fine. If your phy places 100T4 elsewhere in the
|
|
* priority order, you will need to roll your own function.
|
|
*/
|
|
static inline unsigned int mii_nway_result (unsigned int negotiated)
|
|
{
|
|
unsigned int ret;
|
|
|
|
if (negotiated & LPA_100FULL)
|
|
ret = LPA_100FULL;
|
|
else if (negotiated & LPA_100BASE4)
|
|
ret = LPA_100BASE4;
|
|
else if (negotiated & LPA_100HALF)
|
|
ret = LPA_100HALF;
|
|
else if (negotiated & LPA_10FULL)
|
|
ret = LPA_10FULL;
|
|
else
|
|
ret = LPA_10HALF;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* mii_duplex
|
|
* @duplex_lock: Non-zero if duplex is locked at full
|
|
* @negotiated: value of MII ANAR and'd with ANLPAR
|
|
*
|
|
* A small helper function for a common case. Returns one
|
|
* if the media is operating or locked at full duplex, and
|
|
* returns zero otherwise.
|
|
*/
|
|
static inline unsigned int mii_duplex (unsigned int duplex_lock,
|
|
unsigned int negotiated)
|
|
{
|
|
if (duplex_lock)
|
|
return 1;
|
|
if (mii_nway_result(negotiated) & LPA_DUPLEX)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ethtool_adv_to_mii_adv_t
|
|
* @ethadv: the ethtool advertisement settings
|
|
*
|
|
* A small helper function that translates ethtool advertisement
|
|
* settings to phy autonegotiation advertisements for the
|
|
* MII_ADVERTISE register.
|
|
*/
|
|
static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv)
|
|
{
|
|
u32 result = 0;
|
|
|
|
if (ethadv & ADVERTISED_10baseT_Half)
|
|
result |= ADVERTISE_10HALF;
|
|
if (ethadv & ADVERTISED_10baseT_Full)
|
|
result |= ADVERTISE_10FULL;
|
|
if (ethadv & ADVERTISED_100baseT_Half)
|
|
result |= ADVERTISE_100HALF;
|
|
if (ethadv & ADVERTISED_100baseT_Full)
|
|
result |= ADVERTISE_100FULL;
|
|
if (ethadv & ADVERTISED_Pause)
|
|
result |= ADVERTISE_PAUSE_CAP;
|
|
if (ethadv & ADVERTISED_Asym_Pause)
|
|
result |= ADVERTISE_PAUSE_ASYM;
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* mii_adv_to_ethtool_adv_t
|
|
* @adv: value of the MII_ADVERTISE register
|
|
*
|
|
* A small helper function that translates MII_ADVERTISE bits
|
|
* to ethtool advertisement settings.
|
|
*/
|
|
static inline u32 mii_adv_to_ethtool_adv_t(u32 adv)
|
|
{
|
|
u32 result = 0;
|
|
|
|
if (adv & ADVERTISE_10HALF)
|
|
result |= ADVERTISED_10baseT_Half;
|
|
if (adv & ADVERTISE_10FULL)
|
|
result |= ADVERTISED_10baseT_Full;
|
|
if (adv & ADVERTISE_100HALF)
|
|
result |= ADVERTISED_100baseT_Half;
|
|
if (adv & ADVERTISE_100FULL)
|
|
result |= ADVERTISED_100baseT_Full;
|
|
if (adv & ADVERTISE_PAUSE_CAP)
|
|
result |= ADVERTISED_Pause;
|
|
if (adv & ADVERTISE_PAUSE_ASYM)
|
|
result |= ADVERTISED_Asym_Pause;
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* ethtool_adv_to_mii_ctrl1000_t
|
|
* @ethadv: the ethtool advertisement settings
|
|
*
|
|
* A small helper function that translates ethtool advertisement
|
|
* settings to phy autonegotiation advertisements for the
|
|
* MII_CTRL1000 register when in 1000T mode.
|
|
*/
|
|
static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv)
|
|
{
|
|
u32 result = 0;
|
|
|
|
if (ethadv & ADVERTISED_1000baseT_Half)
|
|
result |= ADVERTISE_1000HALF;
|
|
if (ethadv & ADVERTISED_1000baseT_Full)
|
|
result |= ADVERTISE_1000FULL;
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* mii_ctrl1000_to_ethtool_adv_t
|
|
* @adv: value of the MII_CTRL1000 register
|
|
*
|
|
* A small helper function that translates MII_CTRL1000
|
|
* bits, when in 1000Base-T mode, to ethtool
|
|
* advertisement settings.
|
|
*/
|
|
static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv)
|
|
{
|
|
u32 result = 0;
|
|
|
|
if (adv & ADVERTISE_1000HALF)
|
|
result |= ADVERTISED_1000baseT_Half;
|
|
if (adv & ADVERTISE_1000FULL)
|
|
result |= ADVERTISED_1000baseT_Full;
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* mii_lpa_to_ethtool_lpa_t
|
|
* @adv: value of the MII_LPA register
|
|
*
|
|
* A small helper function that translates MII_LPA
|
|
* bits, when in 1000Base-T mode, to ethtool
|
|
* LP advertisement settings.
|
|
*/
|
|
static inline u32 mii_lpa_to_ethtool_lpa_t(u32 lpa)
|
|
{
|
|
u32 result = 0;
|
|
|
|
if (lpa & LPA_LPACK)
|
|
result |= ADVERTISED_Autoneg;
|
|
|
|
return result | mii_adv_to_ethtool_adv_t(lpa);
|
|
}
|
|
|
|
/**
|
|
* mii_stat1000_to_ethtool_lpa_t
|
|
* @adv: value of the MII_STAT1000 register
|
|
*
|
|
* A small helper function that translates MII_STAT1000
|
|
* bits, when in 1000Base-T mode, to ethtool
|
|
* advertisement settings.
|
|
*/
|
|
static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa)
|
|
{
|
|
u32 result = 0;
|
|
|
|
if (lpa & LPA_1000HALF)
|
|
result |= ADVERTISED_1000baseT_Half;
|
|
if (lpa & LPA_1000FULL)
|
|
result |= ADVERTISED_1000baseT_Full;
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* ethtool_adv_to_mii_adv_x
|
|
* @ethadv: the ethtool advertisement settings
|
|
*
|
|
* A small helper function that translates ethtool advertisement
|
|
* settings to phy autonegotiation advertisements for the
|
|
* MII_CTRL1000 register when in 1000Base-X mode.
|
|
*/
|
|
static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv)
|
|
{
|
|
u32 result = 0;
|
|
|
|
if (ethadv & ADVERTISED_1000baseT_Half)
|
|
result |= ADVERTISE_1000XHALF;
|
|
if (ethadv & ADVERTISED_1000baseT_Full)
|
|
result |= ADVERTISE_1000XFULL;
|
|
if (ethadv & ADVERTISED_Pause)
|
|
result |= ADVERTISE_1000XPAUSE;
|
|
if (ethadv & ADVERTISED_Asym_Pause)
|
|
result |= ADVERTISE_1000XPSE_ASYM;
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* mii_adv_to_ethtool_adv_x
|
|
* @adv: value of the MII_CTRL1000 register
|
|
*
|
|
* A small helper function that translates MII_CTRL1000
|
|
* bits, when in 1000Base-X mode, to ethtool
|
|
* advertisement settings.
|
|
*/
|
|
static inline u32 mii_adv_to_ethtool_adv_x(u32 adv)
|
|
{
|
|
u32 result = 0;
|
|
|
|
if (adv & ADVERTISE_1000XHALF)
|
|
result |= ADVERTISED_1000baseT_Half;
|
|
if (adv & ADVERTISE_1000XFULL)
|
|
result |= ADVERTISED_1000baseT_Full;
|
|
if (adv & ADVERTISE_1000XPAUSE)
|
|
result |= ADVERTISED_Pause;
|
|
if (adv & ADVERTISE_1000XPSE_ASYM)
|
|
result |= ADVERTISED_Asym_Pause;
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* mii_lpa_to_ethtool_lpa_x
|
|
* @adv: value of the MII_LPA register
|
|
*
|
|
* A small helper function that translates MII_LPA
|
|
* bits, when in 1000Base-X mode, to ethtool
|
|
* LP advertisement settings.
|
|
*/
|
|
static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa)
|
|
{
|
|
u32 result = 0;
|
|
|
|
if (lpa & LPA_LPACK)
|
|
result |= ADVERTISED_Autoneg;
|
|
|
|
return result | mii_adv_to_ethtool_adv_x(lpa);
|
|
}
|
|
|
|
/**
|
|
* mii_advertise_flowctrl - get flow control advertisement flags
|
|
* @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both)
|
|
*/
|
|
static inline u16 mii_advertise_flowctrl(int cap)
|
|
{
|
|
u16 adv = 0;
|
|
|
|
if (cap & FLOW_CTRL_RX)
|
|
adv = ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
|
|
if (cap & FLOW_CTRL_TX)
|
|
adv ^= ADVERTISE_PAUSE_ASYM;
|
|
|
|
return adv;
|
|
}
|
|
|
|
/**
|
|
* mii_resolve_flowctrl_fdx
|
|
* @lcladv: value of MII ADVERTISE register
|
|
* @rmtadv: value of MII LPA register
|
|
*
|
|
* Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3
|
|
*/
|
|
static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv)
|
|
{
|
|
u8 cap = 0;
|
|
|
|
if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) {
|
|
cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
|
|
} else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) {
|
|
if (lcladv & ADVERTISE_PAUSE_CAP)
|
|
cap = FLOW_CTRL_RX;
|
|
else if (rmtadv & ADVERTISE_PAUSE_CAP)
|
|
cap = FLOW_CTRL_TX;
|
|
}
|
|
|
|
return cap;
|
|
}
|
|
|
|
#endif /* __LINUX_MII_H__ */
|