Commit | Line | Data |
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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 | */ | |
7 | ||
8 | #ifndef __LINUX_MII_H__ | |
9 | #define __LINUX_MII_H__ | |
10 | ||
11 | #include <linux/types.h> | |
28011cf1 | 12 | #include <linux/ethtool.h> |
1da177e4 LT |
13 | |
14 | /* Generic MII registers. */ | |
c44f7eb4 ME |
15 | #define MII_BMCR 0x00 /* Basic mode control register */ |
16 | #define MII_BMSR 0x01 /* Basic mode status register */ | |
17 | #define MII_PHYSID1 0x02 /* PHYS ID 1 */ | |
18 | #define MII_PHYSID2 0x03 /* PHYS ID 2 */ | |
19 | #define MII_ADVERTISE 0x04 /* Advertisement control reg */ | |
20 | #define MII_LPA 0x05 /* Link partner ability reg */ | |
21 | #define MII_EXPANSION 0x06 /* Expansion register */ | |
22 | #define MII_CTRL1000 0x09 /* 1000BASE-T control */ | |
23 | #define MII_STAT1000 0x0a /* 1000BASE-T status */ | |
a59a4d19 GC |
24 | #define MII_MMD_CTRL 0x0d /* MMD Access Control Register */ |
25 | #define MII_MMD_DATA 0x0e /* MMD Access Data Register */ | |
c44f7eb4 ME |
26 | #define MII_ESTATUS 0x0f /* Extended Status */ |
27 | #define MII_DCOUNTER 0x12 /* Disconnect counter */ | |
28 | #define MII_FCSCOUNTER 0x13 /* False carrier counter */ | |
29 | #define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */ | |
30 | #define MII_RERRCOUNTER 0x15 /* Receive error counter */ | |
31 | #define MII_SREVISION 0x16 /* Silicon revision */ | |
32 | #define MII_RESV1 0x17 /* Reserved... */ | |
33 | #define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */ | |
34 | #define MII_PHYADDR 0x19 /* PHY address */ | |
35 | #define MII_RESV2 0x1a /* Reserved... */ | |
36 | #define MII_TPISTATUS 0x1b /* TPI status for 10mbps */ | |
37 | #define MII_NCONFIG 0x1c /* Network interface config */ | |
1da177e4 LT |
38 | |
39 | /* Basic mode control register. */ | |
c44f7eb4 ME |
40 | #define BMCR_RESV 0x003f /* Unused... */ |
41 | #define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */ | |
42 | #define BMCR_CTST 0x0080 /* Collision test */ | |
43 | #define BMCR_FULLDPLX 0x0100 /* Full duplex */ | |
44 | #define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */ | |
e8aaebc6 ME |
45 | #define BMCR_ISOLATE 0x0400 /* Isolate data paths from MII */ |
46 | #define BMCR_PDOWN 0x0800 /* Enable low power state */ | |
c44f7eb4 ME |
47 | #define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */ |
48 | #define BMCR_SPEED100 0x2000 /* Select 100Mbps */ | |
49 | #define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */ | |
e8aaebc6 | 50 | #define BMCR_RESET 0x8000 /* Reset to default state */ |
1da177e4 LT |
51 | |
52 | /* Basic mode status register. */ | |
c44f7eb4 ME |
53 | #define BMSR_ERCAP 0x0001 /* Ext-reg capability */ |
54 | #define BMSR_JCD 0x0002 /* Jabber detected */ | |
55 | #define BMSR_LSTATUS 0x0004 /* Link status */ | |
56 | #define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */ | |
57 | #define BMSR_RFAULT 0x0010 /* Remote fault detected */ | |
58 | #define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */ | |
59 | #define BMSR_RESV 0x00c0 /* Unused... */ | |
60 | #define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */ | |
61 | #define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */ | |
62 | #define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */ | |
63 | #define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */ | |
64 | #define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */ | |
65 | #define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */ | |
66 | #define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */ | |
67 | #define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */ | |
1da177e4 LT |
68 | |
69 | /* Advertisement control register. */ | |
c44f7eb4 ME |
70 | #define ADVERTISE_SLCT 0x001f /* Selector bits */ |
71 | #define ADVERTISE_CSMA 0x0001 /* Only selector supported */ | |
72 | #define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */ | |
73 | #define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */ | |
74 | #define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */ | |
75 | #define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */ | |
76 | #define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */ | |
77 | #define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */ | |
78 | #define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */ | |
79 | #define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */ | |
80 | #define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */ | |
81 | #define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */ | |
82 | #define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */ | |
83 | #define ADVERTISE_RESV 0x1000 /* Unused... */ | |
84 | #define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */ | |
85 | #define ADVERTISE_LPACK 0x4000 /* Ack link partners response */ | |
86 | #define ADVERTISE_NPAGE 0x8000 /* Next page bit */ | |
87 | ||
88 | #define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \ | |
89 | ADVERTISE_CSMA) | |
90 | #define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \ | |
91 | ADVERTISE_100HALF | ADVERTISE_100FULL) | |
1da177e4 LT |
92 | |
93 | /* Link partner ability register. */ | |
c44f7eb4 ME |
94 | #define LPA_SLCT 0x001f /* Same as advertise selector */ |
95 | #define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */ | |
96 | #define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */ | |
97 | #define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */ | |
98 | #define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */ | |
99 | #define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */ | |
100 | #define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */ | |
101 | #define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */ | |
102 | #define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/ | |
103 | #define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */ | |
104 | #define LPA_PAUSE_CAP 0x0400 /* Can pause */ | |
105 | #define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */ | |
106 | #define LPA_RESV 0x1000 /* Unused... */ | |
107 | #define LPA_RFAULT 0x2000 /* Link partner faulted */ | |
108 | #define LPA_LPACK 0x4000 /* Link partner acked us */ | |
109 | #define LPA_NPAGE 0x8000 /* Next page bit */ | |
1da177e4 LT |
110 | |
111 | #define LPA_DUPLEX (LPA_10FULL | LPA_100FULL) | |
112 | #define LPA_100 (LPA_100FULL | LPA_100HALF | LPA_100BASE4) | |
113 | ||
114 | /* Expansion register for auto-negotiation. */ | |
c44f7eb4 ME |
115 | #define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */ |
116 | #define EXPANSION_LCWP 0x0002 /* Got new RX page code word */ | |
117 | #define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */ | |
118 | #define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */ | |
119 | #define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */ | |
120 | #define EXPANSION_RESV 0xffe0 /* Unused... */ | |
1da177e4 | 121 | |
c44f7eb4 ME |
122 | #define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */ |
123 | #define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */ | |
00db8189 | 124 | |
1da177e4 | 125 | /* N-way test register. */ |
c44f7eb4 ME |
126 | #define NWAYTEST_RESV1 0x00ff /* Unused... */ |
127 | #define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */ | |
128 | #define NWAYTEST_RESV2 0xfe00 /* Unused... */ | |
1da177e4 LT |
129 | |
130 | /* 1000BASE-T Control register */ | |
c44f7eb4 ME |
131 | #define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */ |
132 | #define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */ | |
221c5637 MC |
133 | #define CTL1000_AS_MASTER 0x0800 |
134 | #define CTL1000_ENABLE_MASTER 0x1000 | |
1da177e4 LT |
135 | |
136 | /* 1000BASE-T Status register */ | |
c44f7eb4 ME |
137 | #define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */ |
138 | #define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */ | |
139 | #define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */ | |
140 | #define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */ | |
1da177e4 | 141 | |
e18ce346 SG |
142 | /* Flow control flags */ |
143 | #define FLOW_CTRL_TX 0x01 | |
144 | #define FLOW_CTRL_RX 0x02 | |
145 | ||
a59a4d19 GC |
146 | /* MMD Access Control register fields */ |
147 | #define MII_MMD_CTRL_DEVAD_MASK 0x1f /* Mask MMD DEVAD*/ | |
148 | #define MII_MMD_CTRL_ADDR 0x0000 /* Address */ | |
149 | #define MII_MMD_CTRL_NOINCR 0x4000 /* no post increment */ | |
150 | #define MII_MMD_CTRL_INCR_RDWT 0x8000 /* post increment on reads & writes */ | |
151 | #define MII_MMD_CTRL_INCR_ON_WT 0xC000 /* post increment on writes only */ | |
152 | ||
c3ce7e20 DW |
153 | /* This structure is used in all SIOCxMIIxxx ioctl calls */ |
154 | struct mii_ioctl_data { | |
155 | __u16 phy_id; | |
156 | __u16 reg_num; | |
157 | __u16 val_in; | |
158 | __u16 val_out; | |
159 | }; | |
160 | ||
c44f7eb4 | 161 | #ifdef __KERNEL__ |
c3ce7e20 DW |
162 | |
163 | #include <linux/if.h> | |
164 | ||
165 | struct ethtool_cmd; | |
166 | ||
1da177e4 LT |
167 | struct mii_if_info { |
168 | int phy_id; | |
169 | int advertising; | |
170 | int phy_id_mask; | |
171 | int reg_num_mask; | |
172 | ||
173 | unsigned int full_duplex : 1; /* is full duplex? */ | |
174 | unsigned int force_media : 1; /* is autoneg. disabled? */ | |
175 | unsigned int supports_gmii : 1; /* are GMII registers supported? */ | |
176 | ||
177 | struct net_device *dev; | |
178 | int (*mdio_read) (struct net_device *dev, int phy_id, int location); | |
179 | void (*mdio_write) (struct net_device *dev, int phy_id, int location, int val); | |
180 | }; | |
181 | ||
1da177e4 LT |
182 | extern int mii_link_ok (struct mii_if_info *mii); |
183 | extern int mii_nway_restart (struct mii_if_info *mii); | |
184 | extern int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); | |
185 | extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); | |
43ec6e95 | 186 | extern int mii_check_gmii_support(struct mii_if_info *mii); |
1da177e4 LT |
187 | extern void mii_check_link (struct mii_if_info *mii); |
188 | extern unsigned int mii_check_media (struct mii_if_info *mii, | |
189 | unsigned int ok_to_print, | |
190 | unsigned int init_media); | |
191 | extern int generic_mii_ioctl(struct mii_if_info *mii_if, | |
c44f7eb4 | 192 | struct mii_ioctl_data *mii_data, int cmd, |
1da177e4 LT |
193 | unsigned int *duplex_changed); |
194 | ||
195 | ||
1da177e4 LT |
196 | static inline struct mii_ioctl_data *if_mii(struct ifreq *rq) |
197 | { | |
198 | return (struct mii_ioctl_data *) &rq->ifr_ifru; | |
199 | } | |
200 | ||
1da177e4 LT |
201 | /** |
202 | * mii_nway_result | |
203 | * @negotiated: value of MII ANAR and'd with ANLPAR | |
204 | * | |
205 | * Given a set of MII abilities, check each bit and returns the | |
206 | * currently supported media, in the priority order defined by | |
207 | * IEEE 802.3u. We use LPA_xxx constants but note this is not the | |
208 | * value of LPA solely, as described above. | |
209 | * | |
210 | * The one exception to IEEE 802.3u is that 100baseT4 is placed | |
211 | * between 100T-full and 100T-half. If your phy does not support | |
212 | * 100T4 this is fine. If your phy places 100T4 elsewhere in the | |
213 | * priority order, you will need to roll your own function. | |
214 | */ | |
215 | static inline unsigned int mii_nway_result (unsigned int negotiated) | |
216 | { | |
217 | unsigned int ret; | |
218 | ||
219 | if (negotiated & LPA_100FULL) | |
220 | ret = LPA_100FULL; | |
221 | else if (negotiated & LPA_100BASE4) | |
222 | ret = LPA_100BASE4; | |
223 | else if (negotiated & LPA_100HALF) | |
224 | ret = LPA_100HALF; | |
225 | else if (negotiated & LPA_10FULL) | |
226 | ret = LPA_10FULL; | |
227 | else | |
228 | ret = LPA_10HALF; | |
229 | ||
230 | return ret; | |
231 | } | |
232 | ||
233 | /** | |
234 | * mii_duplex | |
235 | * @duplex_lock: Non-zero if duplex is locked at full | |
236 | * @negotiated: value of MII ANAR and'd with ANLPAR | |
237 | * | |
238 | * A small helper function for a common case. Returns one | |
239 | * if the media is operating or locked at full duplex, and | |
240 | * returns zero otherwise. | |
241 | */ | |
242 | static inline unsigned int mii_duplex (unsigned int duplex_lock, | |
243 | unsigned int negotiated) | |
244 | { | |
245 | if (duplex_lock) | |
246 | return 1; | |
247 | if (mii_nway_result(negotiated) & LPA_DUPLEX) | |
248 | return 1; | |
249 | return 0; | |
250 | } | |
251 | ||
28011cf1 | 252 | /** |
37f07023 | 253 | * ethtool_adv_to_mii_adv_t |
28011cf1 MC |
254 | * @ethadv: the ethtool advertisement settings |
255 | * | |
256 | * A small helper function that translates ethtool advertisement | |
257 | * settings to phy autonegotiation advertisements for the | |
258 | * MII_ADVERTISE register. | |
259 | */ | |
37f07023 | 260 | static inline u32 ethtool_adv_to_mii_adv_t(u32 ethadv) |
28011cf1 MC |
261 | { |
262 | u32 result = 0; | |
263 | ||
264 | if (ethadv & ADVERTISED_10baseT_Half) | |
265 | result |= ADVERTISE_10HALF; | |
266 | if (ethadv & ADVERTISED_10baseT_Full) | |
267 | result |= ADVERTISE_10FULL; | |
268 | if (ethadv & ADVERTISED_100baseT_Half) | |
269 | result |= ADVERTISE_100HALF; | |
270 | if (ethadv & ADVERTISED_100baseT_Full) | |
271 | result |= ADVERTISE_100FULL; | |
272 | if (ethadv & ADVERTISED_Pause) | |
273 | result |= ADVERTISE_PAUSE_CAP; | |
274 | if (ethadv & ADVERTISED_Asym_Pause) | |
275 | result |= ADVERTISE_PAUSE_ASYM; | |
276 | ||
277 | return result; | |
278 | } | |
279 | ||
280 | /** | |
37f07023 | 281 | * mii_adv_to_ethtool_adv_t |
28011cf1 MC |
282 | * @adv: value of the MII_ADVERTISE register |
283 | * | |
284 | * A small helper function that translates MII_ADVERTISE bits | |
285 | * to ethtool advertisement settings. | |
286 | */ | |
37f07023 | 287 | static inline u32 mii_adv_to_ethtool_adv_t(u32 adv) |
28011cf1 MC |
288 | { |
289 | u32 result = 0; | |
290 | ||
291 | if (adv & ADVERTISE_10HALF) | |
292 | result |= ADVERTISED_10baseT_Half; | |
293 | if (adv & ADVERTISE_10FULL) | |
294 | result |= ADVERTISED_10baseT_Full; | |
295 | if (adv & ADVERTISE_100HALF) | |
296 | result |= ADVERTISED_100baseT_Half; | |
297 | if (adv & ADVERTISE_100FULL) | |
298 | result |= ADVERTISED_100baseT_Full; | |
299 | if (adv & ADVERTISE_PAUSE_CAP) | |
300 | result |= ADVERTISED_Pause; | |
301 | if (adv & ADVERTISE_PAUSE_ASYM) | |
302 | result |= ADVERTISED_Asym_Pause; | |
303 | ||
304 | return result; | |
305 | } | |
306 | ||
307 | /** | |
37f07023 | 308 | * ethtool_adv_to_mii_ctrl1000_t |
28011cf1 MC |
309 | * @ethadv: the ethtool advertisement settings |
310 | * | |
311 | * A small helper function that translates ethtool advertisement | |
312 | * settings to phy autonegotiation advertisements for the | |
313 | * MII_CTRL1000 register when in 1000T mode. | |
314 | */ | |
37f07023 | 315 | static inline u32 ethtool_adv_to_mii_ctrl1000_t(u32 ethadv) |
28011cf1 MC |
316 | { |
317 | u32 result = 0; | |
318 | ||
319 | if (ethadv & ADVERTISED_1000baseT_Half) | |
320 | result |= ADVERTISE_1000HALF; | |
321 | if (ethadv & ADVERTISED_1000baseT_Full) | |
322 | result |= ADVERTISE_1000FULL; | |
323 | ||
324 | return result; | |
325 | } | |
326 | ||
327 | /** | |
37f07023 | 328 | * mii_ctrl1000_to_ethtool_adv_t |
28011cf1 MC |
329 | * @adv: value of the MII_CTRL1000 register |
330 | * | |
331 | * A small helper function that translates MII_CTRL1000 | |
332 | * bits, when in 1000Base-T mode, to ethtool | |
333 | * advertisement settings. | |
334 | */ | |
37f07023 | 335 | static inline u32 mii_ctrl1000_to_ethtool_adv_t(u32 adv) |
28011cf1 MC |
336 | { |
337 | u32 result = 0; | |
338 | ||
339 | if (adv & ADVERTISE_1000HALF) | |
340 | result |= ADVERTISED_1000baseT_Half; | |
341 | if (adv & ADVERTISE_1000FULL) | |
342 | result |= ADVERTISED_1000baseT_Full; | |
343 | ||
344 | return result; | |
345 | } | |
346 | ||
37f07023 MC |
347 | /** |
348 | * mii_lpa_to_ethtool_lpa_t | |
349 | * @adv: value of the MII_LPA register | |
350 | * | |
351 | * A small helper function that translates MII_LPA | |
352 | * bits, when in 1000Base-T mode, to ethtool | |
353 | * LP advertisement settings. | |
354 | */ | |
355 | static inline u32 mii_lpa_to_ethtool_lpa_t(u32 lpa) | |
356 | { | |
357 | u32 result = 0; | |
358 | ||
359 | if (lpa & LPA_LPACK) | |
360 | result |= ADVERTISED_Autoneg; | |
361 | ||
362 | return result | mii_adv_to_ethtool_adv_t(lpa); | |
363 | } | |
28011cf1 MC |
364 | |
365 | /** | |
37f07023 | 366 | * mii_stat1000_to_ethtool_lpa_t |
28011cf1 MC |
367 | * @adv: value of the MII_STAT1000 register |
368 | * | |
369 | * A small helper function that translates MII_STAT1000 | |
370 | * bits, when in 1000Base-T mode, to ethtool | |
371 | * advertisement settings. | |
372 | */ | |
37f07023 | 373 | static inline u32 mii_stat1000_to_ethtool_lpa_t(u32 lpa) |
28011cf1 MC |
374 | { |
375 | u32 result = 0; | |
376 | ||
377 | if (lpa & LPA_1000HALF) | |
378 | result |= ADVERTISED_1000baseT_Half; | |
379 | if (lpa & LPA_1000FULL) | |
380 | result |= ADVERTISED_1000baseT_Full; | |
381 | ||
382 | return result; | |
383 | } | |
384 | ||
385 | /** | |
37f07023 | 386 | * ethtool_adv_to_mii_adv_x |
28011cf1 MC |
387 | * @ethadv: the ethtool advertisement settings |
388 | * | |
389 | * A small helper function that translates ethtool advertisement | |
390 | * settings to phy autonegotiation advertisements for the | |
391 | * MII_CTRL1000 register when in 1000Base-X mode. | |
392 | */ | |
37f07023 | 393 | static inline u32 ethtool_adv_to_mii_adv_x(u32 ethadv) |
28011cf1 MC |
394 | { |
395 | u32 result = 0; | |
396 | ||
397 | if (ethadv & ADVERTISED_1000baseT_Half) | |
398 | result |= ADVERTISE_1000XHALF; | |
399 | if (ethadv & ADVERTISED_1000baseT_Full) | |
400 | result |= ADVERTISE_1000XFULL; | |
401 | if (ethadv & ADVERTISED_Pause) | |
402 | result |= ADVERTISE_1000XPAUSE; | |
403 | if (ethadv & ADVERTISED_Asym_Pause) | |
404 | result |= ADVERTISE_1000XPSE_ASYM; | |
405 | ||
406 | return result; | |
407 | } | |
408 | ||
409 | /** | |
37f07023 | 410 | * mii_adv_to_ethtool_adv_x |
28011cf1 MC |
411 | * @adv: value of the MII_CTRL1000 register |
412 | * | |
413 | * A small helper function that translates MII_CTRL1000 | |
414 | * bits, when in 1000Base-X mode, to ethtool | |
415 | * advertisement settings. | |
416 | */ | |
37f07023 | 417 | static inline u32 mii_adv_to_ethtool_adv_x(u32 adv) |
28011cf1 MC |
418 | { |
419 | u32 result = 0; | |
420 | ||
421 | if (adv & ADVERTISE_1000XHALF) | |
422 | result |= ADVERTISED_1000baseT_Half; | |
423 | if (adv & ADVERTISE_1000XFULL) | |
424 | result |= ADVERTISED_1000baseT_Full; | |
425 | if (adv & ADVERTISE_1000XPAUSE) | |
426 | result |= ADVERTISED_Pause; | |
427 | if (adv & ADVERTISE_1000XPSE_ASYM) | |
428 | result |= ADVERTISED_Asym_Pause; | |
429 | ||
430 | return result; | |
431 | } | |
432 | ||
37f07023 MC |
433 | /** |
434 | * mii_lpa_to_ethtool_lpa_x | |
435 | * @adv: value of the MII_LPA register | |
436 | * | |
437 | * A small helper function that translates MII_LPA | |
438 | * bits, when in 1000Base-X mode, to ethtool | |
439 | * LP advertisement settings. | |
440 | */ | |
441 | static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa) | |
442 | { | |
443 | u32 result = 0; | |
444 | ||
445 | if (lpa & LPA_LPACK) | |
446 | result |= ADVERTISED_Autoneg; | |
447 | ||
448 | return result | mii_adv_to_ethtool_adv_x(lpa); | |
449 | } | |
450 | ||
a8c30832 BH |
451 | /** |
452 | * mii_advertise_flowctrl - get flow control advertisement flags | |
453 | * @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both) | |
454 | */ | |
455 | static inline u16 mii_advertise_flowctrl(int cap) | |
456 | { | |
457 | u16 adv = 0; | |
458 | ||
459 | if (cap & FLOW_CTRL_RX) | |
460 | adv = ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; | |
461 | if (cap & FLOW_CTRL_TX) | |
462 | adv ^= ADVERTISE_PAUSE_ASYM; | |
463 | ||
464 | return adv; | |
465 | } | |
466 | ||
bc02ff95 SG |
467 | /** |
468 | * mii_resolve_flowctrl_fdx | |
469 | * @lcladv: value of MII ADVERTISE register | |
470 | * @rmtadv: value of MII LPA register | |
471 | * | |
472 | * Resolve full duplex flow control as per IEEE 802.3-2005 table 28B-3 | |
473 | */ | |
474 | static inline u8 mii_resolve_flowctrl_fdx(u16 lcladv, u16 rmtadv) | |
475 | { | |
476 | u8 cap = 0; | |
477 | ||
44c22ee9 BH |
478 | if (lcladv & rmtadv & ADVERTISE_PAUSE_CAP) { |
479 | cap = FLOW_CTRL_TX | FLOW_CTRL_RX; | |
480 | } else if (lcladv & rmtadv & ADVERTISE_PAUSE_ASYM) { | |
481 | if (lcladv & ADVERTISE_PAUSE_CAP) | |
482 | cap = FLOW_CTRL_RX; | |
483 | else if (rmtadv & ADVERTISE_PAUSE_CAP) | |
bc02ff95 SG |
484 | cap = FLOW_CTRL_TX; |
485 | } | |
486 | ||
487 | return cap; | |
488 | } | |
489 | ||
c3ce7e20 | 490 | #endif /* __KERNEL__ */ |
1da177e4 | 491 | #endif /* __LINUX_MII_H__ */ |