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91975b0f HS |
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 | /* Generic MII registers. */ | |
12 | ||
d177e444 WD |
13 | #define MII_BMCR 0x00 /* Basic mode control register */ |
14 | #define MII_BMSR 0x01 /* Basic mode status register */ | |
15 | #define MII_PHYSID1 0x02 /* PHYS ID 1 */ | |
16 | #define MII_PHYSID2 0x03 /* PHYS ID 2 */ | |
17 | #define MII_ADVERTISE 0x04 /* Advertisement control reg */ | |
18 | #define MII_LPA 0x05 /* Link partner ability reg */ | |
19 | #define MII_EXPANSION 0x06 /* Expansion register */ | |
20 | #define MII_CTRL1000 0x09 /* 1000BASE-T control */ | |
21 | #define MII_STAT1000 0x0a /* 1000BASE-T status */ | |
7ea23555 | 22 | #define MII_ESTATUS 0x0f /* Extended Status */ |
d177e444 WD |
23 | #define MII_DCOUNTER 0x12 /* Disconnect counter */ |
24 | #define MII_FCSCOUNTER 0x13 /* False carrier counter */ | |
25 | #define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */ | |
26 | #define MII_RERRCOUNTER 0x15 /* Receive error counter */ | |
27 | #define MII_SREVISION 0x16 /* Silicon revision */ | |
28 | #define MII_RESV1 0x17 /* Reserved... */ | |
29 | #define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */ | |
30 | #define MII_PHYADDR 0x19 /* PHY address */ | |
31 | #define MII_RESV2 0x1a /* Reserved... */ | |
32 | #define MII_TPISTATUS 0x1b /* TPI status for 10mbps */ | |
33 | #define MII_NCONFIG 0x1c /* Network interface config */ | |
91975b0f HS |
34 | |
35 | /* Basic mode control register. */ | |
d177e444 WD |
36 | #define BMCR_RESV 0x003f /* Unused... */ |
37 | #define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */ | |
38 | #define BMCR_CTST 0x0080 /* Collision test */ | |
39 | #define BMCR_FULLDPLX 0x0100 /* Full duplex */ | |
40 | #define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */ | |
41 | #define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */ | |
42 | #define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */ | |
43 | #define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */ | |
44 | #define BMCR_SPEED100 0x2000 /* Select 100Mbps */ | |
45 | #define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */ | |
46 | #define BMCR_RESET 0x8000 /* Reset the DP83840 */ | |
91975b0f HS |
47 | |
48 | /* Basic mode status register. */ | |
d177e444 WD |
49 | #define BMSR_ERCAP 0x0001 /* Ext-reg capability */ |
50 | #define BMSR_JCD 0x0002 /* Jabber detected */ | |
51 | #define BMSR_LSTATUS 0x0004 /* Link status */ | |
52 | #define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */ | |
53 | #define BMSR_RFAULT 0x0010 /* Remote fault detected */ | |
54 | #define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */ | |
55 | #define BMSR_RESV 0x00c0 /* Unused... */ | |
7ea23555 | 56 | #define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */ |
d177e444 WD |
57 | #define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */ |
58 | #define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */ | |
59 | #define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */ | |
60 | #define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */ | |
61 | #define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */ | |
62 | #define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */ | |
63 | #define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */ | |
91975b0f HS |
64 | |
65 | /* Advertisement control register. */ | |
d177e444 WD |
66 | #define ADVERTISE_SLCT 0x001f /* Selector bits */ |
67 | #define ADVERTISE_CSMA 0x0001 /* Only selector supported */ | |
68 | #define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */ | |
69 | #define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */ | |
70 | #define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */ | |
71 | #define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */ | |
72 | #define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */ | |
73 | #define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */ | |
74 | #define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */ | |
75 | #define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */ | |
76 | #define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */ | |
77 | #define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */ | |
78 | #define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */ | |
79 | #define ADVERTISE_RESV 0x1000 /* Unused... */ | |
80 | #define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */ | |
81 | #define ADVERTISE_LPACK 0x4000 /* Ack link partners response */ | |
82 | #define ADVERTISE_NPAGE 0x8000 /* Next page bit */ | |
91975b0f HS |
83 | |
84 | #define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \ | |
85 | ADVERTISE_CSMA) | |
86 | #define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \ | |
d177e444 | 87 | ADVERTISE_100HALF | ADVERTISE_100FULL) |
91975b0f HS |
88 | |
89 | /* Link partner ability register. */ | |
d177e444 WD |
90 | #define LPA_SLCT 0x001f /* Same as advertise selector */ |
91 | #define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */ | |
92 | #define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */ | |
93 | #define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */ | |
94 | #define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */ | |
95 | #define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */ | |
96 | #define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */ | |
97 | #define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */ | |
98 | #define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/ | |
99 | #define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */ | |
100 | #define LPA_PAUSE_CAP 0x0400 /* Can pause */ | |
101 | #define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */ | |
102 | #define LPA_RESV 0x1000 /* Unused... */ | |
103 | #define LPA_RFAULT 0x2000 /* Link partner faulted */ | |
104 | #define LPA_LPACK 0x4000 /* Link partner acked us */ | |
105 | #define LPA_NPAGE 0x8000 /* Next page bit */ | |
91975b0f HS |
106 | |
107 | #define LPA_DUPLEX (LPA_10FULL | LPA_100FULL) | |
108 | #define LPA_100 (LPA_100FULL | LPA_100HALF | LPA_100BASE4) | |
109 | ||
110 | /* Expansion register for auto-negotiation. */ | |
d177e444 WD |
111 | #define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */ |
112 | #define EXPANSION_LCWP 0x0002 /* Got new RX page code word */ | |
113 | #define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */ | |
114 | #define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */ | |
115 | #define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */ | |
116 | #define EXPANSION_RESV 0xffe0 /* Unused... */ | |
7ea23555 | 117 | |
de1d786e CC |
118 | #define ESTATUS_1000_XFULL 0x8000 /* Can do 1000BX Full */ |
119 | #define ESTATUS_1000_XHALF 0x4000 /* Can do 1000BX Half */ | |
7ea23555 ML |
120 | #define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */ |
121 | #define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */ | |
91975b0f HS |
122 | |
123 | /* N-way test register. */ | |
d177e444 WD |
124 | #define NWAYTEST_RESV1 0x00ff /* Unused... */ |
125 | #define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */ | |
126 | #define NWAYTEST_RESV2 0xfe00 /* Unused... */ | |
7ea23555 ML |
127 | |
128 | /* 1000BASE-T Control register */ | |
d177e444 WD |
129 | #define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */ |
130 | #define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */ | |
91975b0f | 131 | |
7ea23555 | 132 | /* 1000BASE-T Status register */ |
d177e444 WD |
133 | #define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */ |
134 | #define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */ | |
135 | #define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */ | |
136 | #define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */ | |
7ea23555 ML |
137 | |
138 | /* Flow control flags */ | |
139 | #define FLOW_CTRL_TX 0x01 | |
140 | #define FLOW_CTRL_RX 0x02 | |
91975b0f HS |
141 | |
142 | /** | |
143 | * mii_nway_result | |
144 | * @negotiated: value of MII ANAR and'd with ANLPAR | |
145 | * | |
146 | * Given a set of MII abilities, check each bit and returns the | |
147 | * currently supported media, in the priority order defined by | |
148 | * IEEE 802.3u. We use LPA_xxx constants but note this is not the | |
149 | * value of LPA solely, as described above. | |
150 | * | |
151 | * The one exception to IEEE 802.3u is that 100baseT4 is placed | |
152 | * between 100T-full and 100T-half. If your phy does not support | |
7ea23555 | 153 | * 100T4 this is fine. If your phy places 100T4 elsewhere in the |
91975b0f HS |
154 | * priority order, you will need to roll your own function. |
155 | */ | |
156 | static inline unsigned int mii_nway_result (unsigned int negotiated) | |
157 | { | |
158 | unsigned int ret; | |
159 | ||
160 | if (negotiated & LPA_100FULL) | |
161 | ret = LPA_100FULL; | |
162 | else if (negotiated & LPA_100BASE4) | |
163 | ret = LPA_100BASE4; | |
164 | else if (negotiated & LPA_100HALF) | |
165 | ret = LPA_100HALF; | |
166 | else if (negotiated & LPA_10FULL) | |
167 | ret = LPA_10FULL; | |
168 | else | |
169 | ret = LPA_10HALF; | |
170 | ||
171 | return ret; | |
172 | } | |
173 | ||
174 | /** | |
175 | * mii_duplex | |
176 | * @duplex_lock: Non-zero if duplex is locked at full | |
177 | * @negotiated: value of MII ANAR and'd with ANLPAR | |
178 | * | |
179 | * A small helper function for a common case. Returns one | |
180 | * if the media is operating or locked at full duplex, and | |
181 | * returns zero otherwise. | |
182 | */ | |
183 | static inline unsigned int mii_duplex (unsigned int duplex_lock, | |
184 | unsigned int negotiated) | |
185 | { | |
186 | if (duplex_lock) | |
187 | return 1; | |
188 | if (mii_nway_result(negotiated) & LPA_DUPLEX) | |
189 | return 1; | |
190 | return 0; | |
191 | } | |
192 | ||
91975b0f | 193 | #endif /* __LINUX_MII_H__ */ |