--- /dev/null
+/*
+ * 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__ */
Code Review / kvmfornfv.git / blobdiff