2 * linux/mii.h: definitions for MII-compatible transceivers
3 * Originally drivers/net/sunhme.h.
5 * Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com)
7 #ifndef __LINUX_MII_H__
8 #define __LINUX_MII_H__
12 #include <uapi/linux/mii.h>
22 unsigned int full_duplex : 1; /* is full duplex? */
23 unsigned int force_media : 1; /* is autoneg. disabled? */
24 unsigned int supports_gmii : 1; /* are GMII registers supported? */
26 struct net_device *dev;
27 int (*mdio_read) (struct net_device *dev, int phy_id, int location);
28 void (*mdio_write) (struct net_device *dev, int phy_id, int location, int val);
31 extern int mii_link_ok (struct mii_if_info *mii);
32 extern int mii_nway_restart (struct mii_if_info *mii);
33 extern int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd);
34 extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd);
35 extern int mii_check_gmii_support(struct mii_if_info *mii);
36 extern void mii_check_link (struct mii_if_info *mii);
37 extern unsigned int mii_check_media (struct mii_if_info *mii,
38 unsigned int ok_to_print,
39 unsigned int init_media);
40 extern int generic_mii_ioctl(struct mii_if_info *mii_if,
41 struct mii_ioctl_data *mii_data, int cmd,
42 unsigned int *duplex_changed);
45 static inline struct mii_ioctl_data *if_mii(struct ifreq *rq)
47 return (struct mii_ioctl_data *) &rq->ifr_ifru;
52 * @negotiated: value of MII ANAR and'd with ANLPAR
54 * Given a set of MII abilities, check each bit and returns the
55 * currently supported media, in the priority order defined by
56 * IEEE 802.3u. We use LPA_xxx constants but note this is not the
57 * value of LPA solely, as described above.
59 * The one exception to IEEE 802.3u is that 100baseT4 is placed
60 * between 100T-full and 100T-half. If your phy does not support
61 * 100T4 this is fine. If your phy places 100T4 elsewhere in the
62 * priority order, you will need to roll your own function.
64 static inline unsigned int mii_nway_result (unsigned int negotiated)
68 if (negotiated & LPA_100FULL)
70 else if (negotiated & LPA_100BASE4)
72 else if (negotiated & LPA_100HALF)
74 else if (negotiated & LPA_10FULL)
84 * @duplex_lock: Non-zero if duplex is locked at full
85 * @negotiated: value of MII ANAR and'd with ANLPAR
87 * A small helper function for a common case. Returns one
88 * if the media is operating or locked at full duplex, and
89 * returns zero otherwise.
91 static inline unsigned int mii_duplex (unsigned int duplex_lock,
92 unsigned int negotiated)
96 if (mii_nway_result(negotiated) & LPA_DUPLEX)
102 * ethtool_adv_to_mii_adv_t
103 * @ethadv: the ethtool advertisement settings
105 * A small helper function that translates ethtool advertisement
106 * settings to phy autonegotiation advertisements for the
107 * MII_ADVERTISE register.
109 static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv)
113 if (ethadv & ADVERTISED_10baseT_Half)
114 result |= ADVERTISE_10HALF;
115 if (ethadv & ADVERTISED_10baseT_Full)
116 result |= ADVERTISE_10FULL;
117 if (ethadv & ADVERTISED_100baseT_Half)
118 result |= ADVERTISE_100HALF;
119 if (ethadv & ADVERTISED_100baseT_Full)
120 result |= ADVERTISE_100FULL;
121 if (ethadv & ADVERTISED_Pause)
122 result |= ADVERTISE_PAUSE_CAP;
123 if (ethadv & ADVERTISED_Asym_Pause)
124 result |= ADVERTISE_PAUSE_ASYM;
130 * mii_adv_to_ethtool_adv_t
131 * @adv: value of the MII_ADVERTISE register
133 * A small helper function that translates MII_ADVERTISE bits
134 * to ethtool advertisement settings.
136 static inline u32 mii_adv_to_ethtool_adv_t(u32 adv)
140 if (adv & ADVERTISE_10HALF)
141 result |= ADVERTISED_10baseT_Half;
142 if (adv & ADVERTISE_10FULL)
143 result |= ADVERTISED_10baseT_Full;
144 if (adv & ADVERTISE_100HALF)
145 result |= ADVERTISED_100baseT_Half;
146 if (adv & ADVERTISE_100FULL)
147 result |= ADVERTISED_100baseT_Full;
148 if (adv & ADVERTISE_PAUSE_CAP)
149 result |= ADVERTISED_Pause;
150 if (adv & ADVERTISE_PAUSE_ASYM)
151 result |= ADVERTISED_Asym_Pause;
157 * ethtool_adv_to_mii_ctrl1000_t
158 * @ethadv: the ethtool advertisement settings
160 * A small helper function that translates ethtool advertisement
161 * settings to phy autonegotiation advertisements for the
162 * MII_CTRL1000 register when in 1000T mode.
164 static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv)
168 if (ethadv & ADVERTISED_1000baseT_Half)
169 result |= ADVERTISE_1000HALF;
170 if (ethadv & ADVERTISED_1000baseT_Full)
171 result |= ADVERTISE_1000FULL;
177 * mii_ctrl1000_to_ethtool_adv_t
178 * @adv: value of the MII_CTRL1000 register
180 * A small helper function that translates MII_CTRL1000
181 * bits, when in 1000Base-T mode, to ethtool
182 * advertisement settings.
184 static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv)
188 if (adv & ADVERTISE_1000HALF)
189 result |= ADVERTISED_1000baseT_Half;
190 if (adv & ADVERTISE_1000FULL)
191 result |= ADVERTISED_1000baseT_Full;
197 * mii_lpa_to_ethtool_lpa_t
198 * @adv: value of the MII_LPA register
200 * A small helper function that translates MII_LPA
201 * bits, when in 1000Base-T mode, to ethtool
202 * LP advertisement settings.
204 static inline u32 mii_lpa_to_ethtool_lpa_t(u32 lpa)
209 result |= ADVERTISED_Autoneg;
211 return result | mii_adv_to_ethtool_adv_t(lpa);
215 * mii_stat1000_to_ethtool_lpa_t
216 * @adv: value of the MII_STAT1000 register
218 * A small helper function that translates MII_STAT1000
219 * bits, when in 1000Base-T mode, to ethtool
220 * advertisement settings.
222 static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa)
226 if (lpa & LPA_1000HALF)
227 result |= ADVERTISED_1000baseT_Half;
228 if (lpa & LPA_1000FULL)
229 result |= ADVERTISED_1000baseT_Full;
235 * ethtool_adv_to_mii_adv_x
236 * @ethadv: the ethtool advertisement settings
238 * A small helper function that translates ethtool advertisement
239 * settings to phy autonegotiation advertisements for the
240 * MII_CTRL1000 register when in 1000Base-X mode.
242 static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv)
246 if (ethadv & ADVERTISED_1000baseT_Half)
247 result |= ADVERTISE_1000XHALF;
248 if (ethadv & ADVERTISED_1000baseT_Full)
249 result |= ADVERTISE_1000XFULL;
250 if (ethadv & ADVERTISED_Pause)
251 result |= ADVERTISE_1000XPAUSE;
252 if (ethadv & ADVERTISED_Asym_Pause)
253 result |= ADVERTISE_1000XPSE_ASYM;
259 * mii_adv_to_ethtool_adv_x
260 * @adv: value of the MII_CTRL1000 register
262 * A small helper function that translates MII_CTRL1000
263 * bits, when in 1000Base-X mode, to ethtool
264 * advertisement settings.
266 static inline u32 mii_adv_to_ethtool_adv_x(u32 adv)
270 if (adv & ADVERTISE_1000XHALF)
271 result |= ADVERTISED_1000baseT_Half;
272 if (adv & ADVERTISE_1000XFULL)
273 result |= ADVERTISED_1000baseT_Full;
274 if (adv & ADVERTISE_1000XPAUSE)
275 result |= ADVERTISED_Pause;
276 if (adv & ADVERTISE_1000XPSE_ASYM)
277 result |= ADVERTISED_Asym_Pause;
283 * mii_lpa_to_ethtool_lpa_x
284 * @adv: value of the MII_LPA register
286 * A small helper function that translates MII_LPA
287 * bits, when in 1000Base-X mode, to ethtool
288 * LP advertisement settings.
290 static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa)
295 result |= ADVERTISED_Autoneg;
297 return result | mii_adv_to_ethtool_adv_x(lpa);
301 * mii_advertise_flowctrl - get flow control advertisement flags
302 * @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both)
304 static inline u16 mii_advertise_flowctrl(int cap)
308 if (cap & FLOW_CTRL_RX)
309 adv = ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
310 if (cap & FLOW_CTRL_TX)
311 adv ^= ADVERTISE_PAUSE_ASYM;
317 * mii_resolve_flowctrl_fdx
318 * @lcladv: value of MII ADVERTISE register
319 * @rmtadv: value of MII LPA register
321 * Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3
323 static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv)
327 if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) {
328 cap = FLOW_CTRL_TX | FLOW_CTRL_RX;
329 } else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) {
330 if (lcladv & ADVERTISE_PAUSE_CAP)
332 else if (rmtadv & ADVERTISE_PAUSE_CAP)
339 #endif /* __LINUX_MII_H__ */