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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); | |
34 | extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); | |
43ec6e95 | 35 | extern int mii_check_gmii_support(struct mii_if_info *mii); |
1da177e4 LT |
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, | |
c44f7eb4 | 41 | struct mii_ioctl_data *mii_data, int cmd, |
1da177e4 LT |
42 | unsigned int *duplex_changed); |
43 | ||
44 | ||
1da177e4 LT |
45 | static inline struct mii_ioctl_data *if_mii(struct ifreq *rq) |
46 | { | |
47 | return (struct mii_ioctl_data *) &rq->ifr_ifru; | |
48 | } | |
49 | ||
1da177e4 LT |
50 | /** |
51 | * mii_nway_result | |
52 | * @negotiated: value of MII ANAR and'd with ANLPAR | |
53 | * | |
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. | |
58 | * | |
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. | |
63 | */ | |
64 | static inline unsigned int mii_nway_result (unsigned int negotiated) | |
65 | { | |
66 | unsigned int ret; | |
67 | ||
68 | if (negotiated & LPA_100FULL) | |
69 | ret = LPA_100FULL; | |
70 | else if (negotiated & LPA_100BASE4) | |
71 | ret = LPA_100BASE4; | |
72 | else if (negotiated & LPA_100HALF) | |
73 | ret = LPA_100HALF; | |
74 | else if (negotiated & LPA_10FULL) | |
75 | ret = LPA_10FULL; | |
76 | else | |
77 | ret = LPA_10HALF; | |
78 | ||
79 | return ret; | |
80 | } | |
81 | ||
82 | /** | |
83 | * mii_duplex | |
84 | * @duplex_lock: Non-zero if duplex is locked at full | |
85 | * @negotiated: value of MII ANAR and'd with ANLPAR | |
86 | * | |
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. | |
90 | */ | |
91 | static inline unsigned int mii_duplex (unsigned int duplex_lock, | |
92 | unsigned int negotiated) | |
93 | { | |
94 | if (duplex_lock) | |
95 | return 1; | |
96 | if (mii_nway_result(negotiated) & LPA_DUPLEX) | |
97 | return 1; | |
98 | return 0; | |
99 | } | |
100 | ||
28011cf1 | 101 | /** |
37f07023 | 102 | * ethtool_adv_to_mii_adv_t |
28011cf1 MC |
103 | * @ethadv: the ethtool advertisement settings |
104 | * | |
105 | * A small helper function that translates ethtool advertisement | |
106 | * settings to phy autonegotiation advertisements for the | |
107 | * MII_ADVERTISE register. | |
108 | */ | |
37f07023 | 109 | static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv) |
28011cf1 MC |
110 | { |
111 | u32 result = 0; | |
112 | ||
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; | |
125 | ||
126 | return result; | |
127 | } | |
128 | ||
129 | /** | |
37f07023 | 130 | * mii_adv_to_ethtool_adv_t |
28011cf1 MC |
131 | * @adv: value of the MII_ADVERTISE register |
132 | * | |
133 | * A small helper function that translates MII_ADVERTISE bits | |
134 | * to ethtool advertisement settings. | |
135 | */ | |
37f07023 | 136 | static inline u32 mii_adv_to_ethtool_adv_t(u32 adv) |
28011cf1 MC |
137 | { |
138 | u32 result = 0; | |
139 | ||
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; | |
152 | ||
153 | return result; | |
154 | } | |
155 | ||
156 | /** | |
37f07023 | 157 | * ethtool_adv_to_mii_ctrl1000_t |
28011cf1 MC |
158 | * @ethadv: the ethtool advertisement settings |
159 | * | |
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. | |
163 | */ | |
37f07023 | 164 | static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv) |
28011cf1 MC |
165 | { |
166 | u32 result = 0; | |
167 | ||
168 | if (ethadv & ADVERTISED_1000baseT_Half) | |
169 | result |= ADVERTISE_1000HALF; | |
170 | if (ethadv & ADVERTISED_1000baseT_Full) | |
171 | result |= ADVERTISE_1000FULL; | |
172 | ||
173 | return result; | |
174 | } | |
175 | ||
176 | /** | |
37f07023 | 177 | * mii_ctrl1000_to_ethtool_adv_t |
28011cf1 MC |
178 | * @adv: value of the MII_CTRL1000 register |
179 | * | |
180 | * A small helper function that translates MII_CTRL1000 | |
181 | * bits, when in 1000Base-T mode, to ethtool | |
182 | * advertisement settings. | |
183 | */ | |
37f07023 | 184 | static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv) |
28011cf1 MC |
185 | { |
186 | u32 result = 0; | |
187 | ||
188 | if (adv & ADVERTISE_1000HALF) | |
189 | result |= ADVERTISED_1000baseT_Half; | |
190 | if (adv & ADVERTISE_1000FULL) | |
191 | result |= ADVERTISED_1000baseT_Full; | |
192 | ||
193 | return result; | |
194 | } | |
195 | ||
37f07023 MC |
196 | /** |
197 | * mii_lpa_to_ethtool_lpa_t | |
198 | * @adv: value of the MII_LPA register | |
199 | * | |
200 | * A small helper function that translates MII_LPA | |
201 | * bits, when in 1000Base-T mode, to ethtool | |
202 | * LP advertisement settings. | |
203 | */ | |
204 | static inline u32 mii_lpa_to_ethtool_lpa_t(u32 lpa) | |
205 | { | |
206 | u32 result = 0; | |
207 | ||
208 | if (lpa & LPA_LPACK) | |
209 | result |= ADVERTISED_Autoneg; | |
210 | ||
211 | return result | mii_adv_to_ethtool_adv_t(lpa); | |
212 | } | |
28011cf1 MC |
213 | |
214 | /** | |
37f07023 | 215 | * mii_stat1000_to_ethtool_lpa_t |
28011cf1 MC |
216 | * @adv: value of the MII_STAT1000 register |
217 | * | |
218 | * A small helper function that translates MII_STAT1000 | |
219 | * bits, when in 1000Base-T mode, to ethtool | |
220 | * advertisement settings. | |
221 | */ | |
37f07023 | 222 | static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa) |
28011cf1 MC |
223 | { |
224 | u32 result = 0; | |
225 | ||
226 | if (lpa & LPA_1000HALF) | |
227 | result |= ADVERTISED_1000baseT_Half; | |
228 | if (lpa & LPA_1000FULL) | |
229 | result |= ADVERTISED_1000baseT_Full; | |
230 | ||
231 | return result; | |
232 | } | |
233 | ||
234 | /** | |
37f07023 | 235 | * ethtool_adv_to_mii_adv_x |
28011cf1 MC |
236 | * @ethadv: the ethtool advertisement settings |
237 | * | |
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. | |
241 | */ | |
37f07023 | 242 | static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv) |
28011cf1 MC |
243 | { |
244 | u32 result = 0; | |
245 | ||
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; | |
254 | ||
255 | return result; | |
256 | } | |
257 | ||
258 | /** | |
37f07023 | 259 | * mii_adv_to_ethtool_adv_x |
28011cf1 MC |
260 | * @adv: value of the MII_CTRL1000 register |
261 | * | |
262 | * A small helper function that translates MII_CTRL1000 | |
263 | * bits, when in 1000Base-X mode, to ethtool | |
264 | * advertisement settings. | |
265 | */ | |
37f07023 | 266 | static inline u32 mii_adv_to_ethtool_adv_x(u32 adv) |
28011cf1 MC |
267 | { |
268 | u32 result = 0; | |
269 | ||
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; | |
278 | ||
279 | return result; | |
280 | } | |
281 | ||
37f07023 MC |
282 | /** |
283 | * mii_lpa_to_ethtool_lpa_x | |
284 | * @adv: value of the MII_LPA register | |
285 | * | |
286 | * A small helper function that translates MII_LPA | |
287 | * bits, when in 1000Base-X mode, to ethtool | |
288 | * LP advertisement settings. | |
289 | */ | |
290 | static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa) | |
291 | { | |
292 | u32 result = 0; | |
293 | ||
294 | if (lpa & LPA_LPACK) | |
295 | result |= ADVERTISED_Autoneg; | |
296 | ||
297 | return result | mii_adv_to_ethtool_adv_x(lpa); | |
298 | } | |
299 | ||
a8c30832 BH |
300 | /** |
301 | * mii_advertise_flowctrl - get flow control advertisement flags | |
302 | * @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both) | |
303 | */ | |
304 | static inline u16 mii_advertise_flowctrl(int cap) | |
305 | { | |
306 | u16 adv = 0; | |
307 | ||
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; | |
312 | ||
313 | return adv; | |
314 | } | |
315 | ||
bc02ff95 SG |
316 | /** |
317 | * mii_resolve_flowctrl_fdx | |
318 | * @lcladv: value of MII ADVERTISE register | |
319 | * @rmtadv: value of MII LPA register | |
320 | * | |
321 | * Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3 | |
322 | */ | |
323 | static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv) | |
324 | { | |
325 | u8 cap = 0; | |
326 | ||
44c22ee9 BH |
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) | |
331 | cap = FLOW_CTRL_RX; | |
332 | else if (rmtadv & ADVERTISE_PAUSE_CAP) | |
bc02ff95 SG |
333 | cap = FLOW_CTRL_TX; |
334 | } | |
335 | ||
336 | return cap; | |
337 | } | |
338 | ||
1da177e4 | 339 | #endif /* __LINUX_MII_H__ */ |