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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> | |
12 | #include <linux/if.h> | |
13 | ||
14 | /* Generic MII registers. */ | |
15 | ||
16 | #define MII_BMCR 0x00 /* Basic mode control register */ | |
17 | #define MII_BMSR 0x01 /* Basic mode status register */ | |
18 | #define MII_PHYSID1 0x02 /* PHYS ID 1 */ | |
19 | #define MII_PHYSID2 0x03 /* PHYS ID 2 */ | |
20 | #define MII_ADVERTISE 0x04 /* Advertisement control reg */ | |
21 | #define MII_LPA 0x05 /* Link partner ability reg */ | |
22 | #define MII_EXPANSION 0x06 /* Expansion register */ | |
23 | #define MII_CTRL1000 0x09 /* 1000BASE-T control */ | |
24 | #define MII_STAT1000 0x0a /* 1000BASE-T status */ | |
25 | #define MII_DCOUNTER 0x12 /* Disconnect counter */ | |
26 | #define MII_FCSCOUNTER 0x13 /* False carrier counter */ | |
27 | #define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */ | |
28 | #define MII_RERRCOUNTER 0x15 /* Receive error counter */ | |
29 | #define MII_SREVISION 0x16 /* Silicon revision */ | |
30 | #define MII_RESV1 0x17 /* Reserved... */ | |
31 | #define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */ | |
32 | #define MII_PHYADDR 0x19 /* PHY address */ | |
33 | #define MII_RESV2 0x1a /* Reserved... */ | |
34 | #define MII_TPISTATUS 0x1b /* TPI status for 10mbps */ | |
35 | #define MII_NCONFIG 0x1c /* Network interface config */ | |
36 | ||
37 | /* Basic mode control register. */ | |
38 | #define BMCR_RESV 0x003f /* Unused... */ | |
39 | #define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */ | |
40 | #define BMCR_CTST 0x0080 /* Collision test */ | |
41 | #define BMCR_FULLDPLX 0x0100 /* Full duplex */ | |
42 | #define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */ | |
43 | #define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */ | |
44 | #define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */ | |
45 | #define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */ | |
46 | #define BMCR_SPEED100 0x2000 /* Select 100Mbps */ | |
47 | #define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */ | |
48 | #define BMCR_RESET 0x8000 /* Reset the DP83840 */ | |
49 | ||
50 | /* Basic mode status register. */ | |
51 | #define BMSR_ERCAP 0x0001 /* Ext-reg capability */ | |
52 | #define BMSR_JCD 0x0002 /* Jabber detected */ | |
53 | #define BMSR_LSTATUS 0x0004 /* Link status */ | |
54 | #define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */ | |
55 | #define BMSR_RFAULT 0x0010 /* Remote fault detected */ | |
56 | #define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */ | |
57 | #define BMSR_RESV 0x07c0 /* Unused... */ | |
58 | #define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */ | |
59 | #define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */ | |
60 | #define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */ | |
61 | #define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */ | |
62 | #define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */ | |
63 | ||
64 | /* Advertisement control register. */ | |
65 | #define ADVERTISE_SLCT 0x001f /* Selector bits */ | |
66 | #define ADVERTISE_CSMA 0x0001 /* Only selector supported */ | |
67 | #define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */ | |
b6016b76 | 68 | #define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */ |
1da177e4 | 69 | #define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */ |
b6016b76 | 70 | #define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */ |
1da177e4 | 71 | #define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */ |
b6016b76 | 72 | #define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */ |
1da177e4 | 73 | #define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */ |
b6016b76 | 74 | #define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */ |
1da177e4 LT |
75 | #define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */ |
76 | #define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */ | |
77 | #define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */ | |
78 | #define ADVERTISE_RESV 0x1000 /* Unused... */ | |
79 | #define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */ | |
80 | #define ADVERTISE_LPACK 0x4000 /* Ack link partners response */ | |
81 | #define ADVERTISE_NPAGE 0x8000 /* Next page bit */ | |
82 | ||
83 | #define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \ | |
84 | ADVERTISE_CSMA) | |
85 | #define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \ | |
86 | ADVERTISE_100HALF | ADVERTISE_100FULL) | |
87 | ||
88 | /* Link partner ability register. */ | |
89 | #define LPA_SLCT 0x001f /* Same as advertise selector */ | |
90 | #define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */ | |
b6016b76 | 91 | #define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */ |
1da177e4 | 92 | #define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */ |
b6016b76 | 93 | #define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */ |
1da177e4 | 94 | #define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */ |
b6016b76 | 95 | #define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */ |
1da177e4 | 96 | #define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */ |
b6016b76 | 97 | #define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/ |
1da177e4 LT |
98 | #define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */ |
99 | #define LPA_PAUSE_CAP 0x0400 /* Can pause */ | |
100 | #define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */ | |
101 | #define LPA_RESV 0x1000 /* Unused... */ | |
102 | #define LPA_RFAULT 0x2000 /* Link partner faulted */ | |
103 | #define LPA_LPACK 0x4000 /* Link partner acked us */ | |
104 | #define LPA_NPAGE 0x8000 /* Next page bit */ | |
105 | ||
106 | #define LPA_DUPLEX (LPA_10FULL | LPA_100FULL) | |
107 | #define LPA_100 (LPA_100FULL | LPA_100HALF | LPA_100BASE4) | |
108 | ||
109 | /* Expansion register for auto-negotiation. */ | |
110 | #define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */ | |
111 | #define EXPANSION_LCWP 0x0002 /* Got new RX page code word */ | |
112 | #define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */ | |
113 | #define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */ | |
114 | #define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */ | |
115 | #define EXPANSION_RESV 0xffe0 /* Unused... */ | |
116 | ||
117 | /* N-way test register. */ | |
118 | #define NWAYTEST_RESV1 0x00ff /* Unused... */ | |
119 | #define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */ | |
120 | #define NWAYTEST_RESV2 0xfe00 /* Unused... */ | |
121 | ||
122 | /* 1000BASE-T Control register */ | |
123 | #define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */ | |
124 | #define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */ | |
125 | ||
126 | /* 1000BASE-T Status register */ | |
127 | #define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */ | |
128 | #define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */ | |
129 | #define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */ | |
130 | #define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */ | |
131 | ||
132 | struct mii_if_info { | |
133 | int phy_id; | |
134 | int advertising; | |
135 | int phy_id_mask; | |
136 | int reg_num_mask; | |
137 | ||
138 | unsigned int full_duplex : 1; /* is full duplex? */ | |
139 | unsigned int force_media : 1; /* is autoneg. disabled? */ | |
140 | unsigned int supports_gmii : 1; /* are GMII registers supported? */ | |
141 | ||
142 | struct net_device *dev; | |
143 | int (*mdio_read) (struct net_device *dev, int phy_id, int location); | |
144 | void (*mdio_write) (struct net_device *dev, int phy_id, int location, int val); | |
145 | }; | |
146 | ||
147 | struct ethtool_cmd; | |
148 | struct mii_ioctl_data; | |
149 | ||
150 | extern int mii_link_ok (struct mii_if_info *mii); | |
151 | extern int mii_nway_restart (struct mii_if_info *mii); | |
152 | extern int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); | |
153 | extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); | |
154 | extern void mii_check_link (struct mii_if_info *mii); | |
155 | extern unsigned int mii_check_media (struct mii_if_info *mii, | |
156 | unsigned int ok_to_print, | |
157 | unsigned int init_media); | |
158 | extern int generic_mii_ioctl(struct mii_if_info *mii_if, | |
159 | struct mii_ioctl_data *mii_data, int cmd, | |
160 | unsigned int *duplex_changed); | |
161 | ||
162 | ||
163 | ||
164 | /* This structure is used in all SIOCxMIIxxx ioctl calls */ | |
165 | struct mii_ioctl_data { | |
166 | u16 phy_id; | |
167 | u16 reg_num; | |
168 | u16 val_in; | |
169 | u16 val_out; | |
170 | }; | |
171 | ||
172 | ||
173 | static inline struct mii_ioctl_data *if_mii(struct ifreq *rq) | |
174 | { | |
175 | return (struct mii_ioctl_data *) &rq->ifr_ifru; | |
176 | } | |
177 | ||
178 | ||
179 | /** | |
180 | * mii_nway_result | |
181 | * @negotiated: value of MII ANAR and'd with ANLPAR | |
182 | * | |
183 | * Given a set of MII abilities, check each bit and returns the | |
184 | * currently supported media, in the priority order defined by | |
185 | * IEEE 802.3u. We use LPA_xxx constants but note this is not the | |
186 | * value of LPA solely, as described above. | |
187 | * | |
188 | * The one exception to IEEE 802.3u is that 100baseT4 is placed | |
189 | * between 100T-full and 100T-half. If your phy does not support | |
190 | * 100T4 this is fine. If your phy places 100T4 elsewhere in the | |
191 | * priority order, you will need to roll your own function. | |
192 | */ | |
193 | static inline unsigned int mii_nway_result (unsigned int negotiated) | |
194 | { | |
195 | unsigned int ret; | |
196 | ||
197 | if (negotiated & LPA_100FULL) | |
198 | ret = LPA_100FULL; | |
199 | else if (negotiated & LPA_100BASE4) | |
200 | ret = LPA_100BASE4; | |
201 | else if (negotiated & LPA_100HALF) | |
202 | ret = LPA_100HALF; | |
203 | else if (negotiated & LPA_10FULL) | |
204 | ret = LPA_10FULL; | |
205 | else | |
206 | ret = LPA_10HALF; | |
207 | ||
208 | return ret; | |
209 | } | |
210 | ||
211 | /** | |
212 | * mii_duplex | |
213 | * @duplex_lock: Non-zero if duplex is locked at full | |
214 | * @negotiated: value of MII ANAR and'd with ANLPAR | |
215 | * | |
216 | * A small helper function for a common case. Returns one | |
217 | * if the media is operating or locked at full duplex, and | |
218 | * returns zero otherwise. | |
219 | */ | |
220 | static inline unsigned int mii_duplex (unsigned int duplex_lock, | |
221 | unsigned int negotiated) | |
222 | { | |
223 | if (duplex_lock) | |
224 | return 1; | |
225 | if (mii_nway_result(negotiated) & LPA_DUPLEX) | |
226 | return 1; | |
227 | return 0; | |
228 | } | |
229 | ||
230 | ||
231 | #endif /* __LINUX_MII_H__ */ |