You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
339 lines
8.5 KiB
339 lines
8.5 KiB
/* |
|
* 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 int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); |
|
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__ */
|
|
|