]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/mii.h: definitions for MII-compatible transceivers | |
3 | * Originally drivers/net/sunhme.h. | |
4 | * | |
5 | * Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com) | |
6 | */ | |
1da177e4 LT |
7 | #ifndef __LINUX_MII_H__ |
8 | #define __LINUX_MII_H__ | |
9 | ||
c3ce7e20 DW |
10 | |
11 | #include <linux/if.h> | |
607ca46e | 12 | #include <uapi/linux/mii.h> |
c3ce7e20 DW |
13 | |
14 | struct ethtool_cmd; | |
15 | ||
1da177e4 LT |
16 | struct mii_if_info { |
17 | int phy_id; | |
18 | int advertising; | |
19 | int phy_id_mask; | |
20 | int reg_num_mask; | |
21 | ||
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? */ | |
25 | ||
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); | |
29 | }; | |
30 | ||
1da177e4 LT |
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); | |
82c01a84 | 34 | extern void mii_ethtool_get_link_ksettings( |
bc8ee596 | 35 | struct mii_if_info *mii, struct ethtool_link_ksettings *cmd); |
1da177e4 | 36 | extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); |
bc8ee596 PR |
37 | extern int mii_ethtool_set_link_ksettings( |
38 | struct mii_if_info *mii, const struct ethtool_link_ksettings *cmd); | |
43ec6e95 | 39 | extern int mii_check_gmii_support(struct mii_if_info *mii); |
1da177e4 LT |
40 | extern void mii_check_link (struct mii_if_info *mii); |
41 | extern unsigned int mii_check_media (struct mii_if_info *mii, | |
42 | unsigned int ok_to_print, | |
43 | unsigned int init_media); | |
44 | extern int generic_mii_ioctl(struct mii_if_info *mii_if, | |
c44f7eb4 | 45 | struct mii_ioctl_data *mii_data, int cmd, |
1da177e4 LT |
46 | unsigned int *duplex_changed); |
47 | ||
48 | ||
1da177e4 LT |
49 | static inline struct mii_ioctl_data *if_mii(struct ifreq *rq) |
50 | { | |
51 | return (struct mii_ioctl_data *) &rq->ifr_ifru; | |
52 | } | |
53 | ||
1da177e4 LT |
54 | /** |
55 | * mii_nway_result | |
56 | * @negotiated: value of MII ANAR and'd with ANLPAR | |
57 | * | |
58 | * Given a set of MII abilities, check each bit and returns the | |
59 | * currently supported media, in the priority order defined by | |
60 | * IEEE 802.3u. We use LPA_xxx constants but note this is not the | |
61 | * value of LPA solely, as described above. | |
62 | * | |
63 | * The one exception to IEEE 802.3u is that 100baseT4 is placed | |
64 | * between 100T-full and 100T-half. If your phy does not support | |
65 | * 100T4 this is fine. If your phy places 100T4 elsewhere in the | |
66 | * priority order, you will need to roll your own function. | |
67 | */ | |
68 | static inline unsigned int mii_nway_result (unsigned int negotiated) | |
69 | { | |
70 | unsigned int ret; | |
71 | ||
72 | if (negotiated & LPA_100FULL) | |
73 | ret = LPA_100FULL; | |
74 | else if (negotiated & LPA_100BASE4) | |
75 | ret = LPA_100BASE4; | |
76 | else if (negotiated & LPA_100HALF) | |
77 | ret = LPA_100HALF; | |
78 | else if (negotiated & LPA_10FULL) | |
79 | ret = LPA_10FULL; | |
80 | else | |
81 | ret = LPA_10HALF; | |
82 | ||
83 | return ret; | |
84 | } | |
85 | ||
86 | /** | |
87 | * mii_duplex | |
88 | * @duplex_lock: Non-zero if duplex is locked at full | |
89 | * @negotiated: value of MII ANAR and'd with ANLPAR | |
90 | * | |
91 | * A small helper function for a common case. Returns one | |
92 | * if the media is operating or locked at full duplex, and | |
93 | * returns zero otherwise. | |
94 | */ | |
95 | static inline unsigned int mii_duplex (unsigned int duplex_lock, | |
96 | unsigned int negotiated) | |
97 | { | |
98 | if (duplex_lock) | |
99 | return 1; | |
100 | if (mii_nway_result(negotiated) & LPA_DUPLEX) | |
101 | return 1; | |
102 | return 0; | |
103 | } | |
104 | ||
28011cf1 | 105 | /** |
37f07023 | 106 | * ethtool_adv_to_mii_adv_t |
28011cf1 MC |
107 | * @ethadv: the ethtool advertisement settings |
108 | * | |
109 | * A small helper function that translates ethtool advertisement | |
110 | * settings to phy autonegotiation advertisements for the | |
111 | * MII_ADVERTISE register. | |
112 | */ | |
37f07023 | 113 | static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv) |
28011cf1 MC |
114 | { |
115 | u32 result = 0; | |
116 | ||
117 | if (ethadv & ADVERTISED_10baseT_Half) | |
118 | result |= ADVERTISE_10HALF; | |
119 | if (ethadv & ADVERTISED_10baseT_Full) | |
120 | result |= ADVERTISE_10FULL; | |
121 | if (ethadv & ADVERTISED_100baseT_Half) | |
122 | result |= ADVERTISE_100HALF; | |
123 | if (ethadv & ADVERTISED_100baseT_Full) | |
124 | result |= ADVERTISE_100FULL; | |
125 | if (ethadv & ADVERTISED_Pause) | |
126 | result |= ADVERTISE_PAUSE_CAP; | |
127 | if (ethadv & ADVERTISED_Asym_Pause) | |
128 | result |= ADVERTISE_PAUSE_ASYM; | |
129 | ||
130 | return result; | |
131 | } | |
132 | ||
133 | /** | |
37f07023 | 134 | * mii_adv_to_ethtool_adv_t |
28011cf1 MC |
135 | * @adv: value of the MII_ADVERTISE register |
136 | * | |
137 | * A small helper function that translates MII_ADVERTISE bits | |
138 | * to ethtool advertisement settings. | |
139 | */ | |
37f07023 | 140 | static inline u32 mii_adv_to_ethtool_adv_t(u32 adv) |
28011cf1 MC |
141 | { |
142 | u32 result = 0; | |
143 | ||
144 | if (adv & ADVERTISE_10HALF) | |
145 | result |= ADVERTISED_10baseT_Half; | |
146 | if (adv & ADVERTISE_10FULL) | |
147 | result |= ADVERTISED_10baseT_Full; | |
148 | if (adv & ADVERTISE_100HALF) | |
149 | result |= ADVERTISED_100baseT_Half; | |
150 | if (adv & ADVERTISE_100FULL) | |
151 | result |= ADVERTISED_100baseT_Full; | |
152 | if (adv & ADVERTISE_PAUSE_CAP) | |
153 | result |= ADVERTISED_Pause; | |
154 | if (adv & ADVERTISE_PAUSE_ASYM) | |
155 | result |= ADVERTISED_Asym_Pause; | |
156 | ||
157 | return result; | |
158 | } | |
159 | ||
160 | /** | |
37f07023 | 161 | * ethtool_adv_to_mii_ctrl1000_t |
28011cf1 MC |
162 | * @ethadv: the ethtool advertisement settings |
163 | * | |
164 | * A small helper function that translates ethtool advertisement | |
165 | * settings to phy autonegotiation advertisements for the | |
166 | * MII_CTRL1000 register when in 1000T mode. | |
167 | */ | |
37f07023 | 168 | static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv) |
28011cf1 MC |
169 | { |
170 | u32 result = 0; | |
171 | ||
172 | if (ethadv & ADVERTISED_1000baseT_Half) | |
173 | result |= ADVERTISE_1000HALF; | |
174 | if (ethadv & ADVERTISED_1000baseT_Full) | |
175 | result |= ADVERTISE_1000FULL; | |
176 | ||
177 | return result; | |
178 | } | |
179 | ||
180 | /** | |
37f07023 | 181 | * mii_ctrl1000_to_ethtool_adv_t |
28011cf1 MC |
182 | * @adv: value of the MII_CTRL1000 register |
183 | * | |
184 | * A small helper function that translates MII_CTRL1000 | |
185 | * bits, when in 1000Base-T mode, to ethtool | |
186 | * advertisement settings. | |
187 | */ | |
37f07023 | 188 | static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv) |
28011cf1 MC |
189 | { |
190 | u32 result = 0; | |
191 | ||
192 | if (adv & ADVERTISE_1000HALF) | |
193 | result |= ADVERTISED_1000baseT_Half; | |
194 | if (adv & ADVERTISE_1000FULL) | |
195 | result |= ADVERTISED_1000baseT_Full; | |
196 | ||
197 | return result; | |
198 | } | |
199 | ||
37f07023 MC |
200 | /** |
201 | * mii_lpa_to_ethtool_lpa_t | |
202 | * @adv: value of the MII_LPA register | |
203 | * | |
204 | * A small helper function that translates MII_LPA | |
205 | * bits, when in 1000Base-T mode, to ethtool | |
206 | * LP advertisement settings. | |
207 | */ | |
208 | static inline u32 mii_lpa_to_ethtool_lpa_t(u32 lpa) | |
209 | { | |
210 | u32 result = 0; | |
211 | ||
212 | if (lpa & LPA_LPACK) | |
213 | result |= ADVERTISED_Autoneg; | |
214 | ||
215 | return result | mii_adv_to_ethtool_adv_t(lpa); | |
216 | } | |
28011cf1 MC |
217 | |
218 | /** | |
37f07023 | 219 | * mii_stat1000_to_ethtool_lpa_t |
28011cf1 MC |
220 | * @adv: value of the MII_STAT1000 register |
221 | * | |
222 | * A small helper function that translates MII_STAT1000 | |
223 | * bits, when in 1000Base-T mode, to ethtool | |
224 | * advertisement settings. | |
225 | */ | |
37f07023 | 226 | static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa) |
28011cf1 MC |
227 | { |
228 | u32 result = 0; | |
229 | ||
230 | if (lpa & LPA_1000HALF) | |
231 | result |= ADVERTISED_1000baseT_Half; | |
232 | if (lpa & LPA_1000FULL) | |
233 | result |= ADVERTISED_1000baseT_Full; | |
234 | ||
235 | return result; | |
236 | } | |
237 | ||
238 | /** | |
37f07023 | 239 | * ethtool_adv_to_mii_adv_x |
28011cf1 MC |
240 | * @ethadv: the ethtool advertisement settings |
241 | * | |
242 | * A small helper function that translates ethtool advertisement | |
243 | * settings to phy autonegotiation advertisements for the | |
244 | * MII_CTRL1000 register when in 1000Base-X mode. | |
245 | */ | |
37f07023 | 246 | static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv) |
28011cf1 MC |
247 | { |
248 | u32 result = 0; | |
249 | ||
250 | if (ethadv & ADVERTISED_1000baseT_Half) | |
251 | result |= ADVERTISE_1000XHALF; | |
252 | if (ethadv & ADVERTISED_1000baseT_Full) | |
253 | result |= ADVERTISE_1000XFULL; | |
254 | if (ethadv & ADVERTISED_Pause) | |
255 | result |= ADVERTISE_1000XPAUSE; | |
256 | if (ethadv & ADVERTISED_Asym_Pause) | |
257 | result |= ADVERTISE_1000XPSE_ASYM; | |
258 | ||
259 | return result; | |
260 | } | |
261 | ||
262 | /** | |
37f07023 | 263 | * mii_adv_to_ethtool_adv_x |
28011cf1 MC |
264 | * @adv: value of the MII_CTRL1000 register |
265 | * | |
266 | * A small helper function that translates MII_CTRL1000 | |
267 | * bits, when in 1000Base-X mode, to ethtool | |
268 | * advertisement settings. | |
269 | */ | |
37f07023 | 270 | static inline u32 mii_adv_to_ethtool_adv_x(u32 adv) |
28011cf1 MC |
271 | { |
272 | u32 result = 0; | |
273 | ||
274 | if (adv & ADVERTISE_1000XHALF) | |
275 | result |= ADVERTISED_1000baseT_Half; | |
276 | if (adv & ADVERTISE_1000XFULL) | |
277 | result |= ADVERTISED_1000baseT_Full; | |
278 | if (adv & ADVERTISE_1000XPAUSE) | |
279 | result |= ADVERTISED_Pause; | |
280 | if (adv & ADVERTISE_1000XPSE_ASYM) | |
281 | result |= ADVERTISED_Asym_Pause; | |
282 | ||
283 | return result; | |
284 | } | |
285 | ||
37f07023 MC |
286 | /** |
287 | * mii_lpa_to_ethtool_lpa_x | |
288 | * @adv: value of the MII_LPA register | |
289 | * | |
290 | * A small helper function that translates MII_LPA | |
291 | * bits, when in 1000Base-X mode, to ethtool | |
292 | * LP advertisement settings. | |
293 | */ | |
294 | static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa) | |
295 | { | |
296 | u32 result = 0; | |
297 | ||
298 | if (lpa & LPA_LPACK) | |
299 | result |= ADVERTISED_Autoneg; | |
300 | ||
301 | return result | mii_adv_to_ethtool_adv_x(lpa); | |
302 | } | |
303 | ||
a8c30832 BH |
304 | /** |
305 | * mii_advertise_flowctrl - get flow control advertisement flags | |
306 | * @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both) | |
307 | */ | |
308 | static inline u16 mii_advertise_flowctrl(int cap) | |
309 | { | |
310 | u16 adv = 0; | |
311 | ||
312 | if (cap & FLOW_CTRL_RX) | |
313 | adv = ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; | |
314 | if (cap & FLOW_CTRL_TX) | |
315 | adv ^= ADVERTISE_PAUSE_ASYM; | |
316 | ||
317 | return adv; | |
318 | } | |
319 | ||
bc02ff95 SG |
320 | /** |
321 | * mii_resolve_flowctrl_fdx | |
322 | * @lcladv: value of MII ADVERTISE register | |
323 | * @rmtadv: value of MII LPA register | |
324 | * | |
325 | * Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3 | |
326 | */ | |
327 | static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv) | |
328 | { | |
329 | u8 cap = 0; | |
330 | ||
44c22ee9 BH |
331 | if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) { |
332 | cap = FLOW_CTRL_TX | FLOW_CTRL_RX; | |
333 | } else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) { | |
334 | if (lcladv & ADVERTISE_PAUSE_CAP) | |
335 | cap = FLOW_CTRL_RX; | |
336 | else if (rmtadv & ADVERTISE_PAUSE_CAP) | |
bc02ff95 SG |
337 | cap = FLOW_CTRL_TX; |
338 | } | |
339 | ||
340 | return cap; | |
341 | } | |
342 | ||
1da177e4 | 343 | #endif /* __LINUX_MII_H__ */ |