1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/*
* linux/mii.h: definitions for MII-compatible transceivers
* Originally drivers/net/sunhme.h.
*
* Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com)
*/
#ifndef __LINUX_MII_H__
#define __LINUX_MII_H__
/* Generic MII registers. */
#define MII_BMCR 0x00 /* Basic mode control register */
#define MII_BMSR 0x01 /* Basic mode status register */
#define MII_PHYSID1 0x02 /* PHYS ID 1 */
#define MII_PHYSID2 0x03 /* PHYS ID 2 */
#define MII_ADVERTISE 0x04 /* Advertisement control reg */
#define MII_LPA 0x05 /* Link partner ability reg */
#define MII_EXPANSION 0x06 /* Expansion register */
#define MII_CTRL1000 0x09 /* 1000BASE-T control */
#define MII_STAT1000 0x0a /* 1000BASE-T status */
#define MII_ESTATUS 0x0f /* Extended Status */
#define MII_DCOUNTER 0x12 /* Disconnect counter */
#define MII_FCSCOUNTER 0x13 /* False carrier counter */
#define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */
#define MII_RERRCOUNTER 0x15 /* Receive error counter */
#define MII_SREVISION 0x16 /* Silicon revision */
#define MII_RESV1 0x17 /* Reserved... */
#define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */
#define MII_PHYADDR 0x19 /* PHY address */
#define MII_RESV2 0x1a /* Reserved... */
#define MII_TPISTATUS 0x1b /* TPI status for 10mbps */
#define MII_NCONFIG 0x1c /* Network interface config */
/* Basic mode control register. */
#define BMCR_RESV 0x003f /* Unused... */
#define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */
#define BMCR_CTST 0x0080 /* Collision test */
#define BMCR_FULLDPLX 0x0100 /* Full duplex */
#define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */
#define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */
#define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */
#define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */
#define BMCR_SPEED100 0x2000 /* Select 100Mbps */
#define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */
#define BMCR_RESET 0x8000 /* Reset the DP83840 */
/* Basic mode status register. */
#define BMSR_ERCAP 0x0001 /* Ext-reg capability */
#define BMSR_JCD 0x0002 /* Jabber detected */
#define BMSR_LSTATUS 0x0004 /* Link status */
#define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */
#define BMSR_RFAULT 0x0010 /* Remote fault detected */
#define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */
#define BMSR_RESV 0x00c0 /* Unused... */
#define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */
#define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */
#define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */
#define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */
#define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */
#define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */
#define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */
#define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */
/* Advertisement control register. */
#define ADVERTISE_SLCT 0x001f /* Selector bits */
#define ADVERTISE_CSMA 0x0001 /* Only selector supported */
#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */
#define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */
#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */
#define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */
#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */
#define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */
#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */
#define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */
#define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */
#define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */
#define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */
#define ADVERTISE_RESV 0x1000 /* Unused... */
#define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */
#define ADVERTISE_LPACK 0x4000 /* Ack link partners response */
#define ADVERTISE_NPAGE 0x8000 /* Next page bit */
#define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \
ADVERTISE_CSMA)
#define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \
ADVERTISE_100HALF | ADVERTISE_100FULL)
/* Link partner ability register. */
#define LPA_SLCT 0x001f /* Same as advertise selector */
#define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */
#define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */
#define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */
#define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */
#define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */
#define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */
#define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */
#define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/
#define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */
#define LPA_PAUSE_CAP 0x0400 /* Can pause */
#define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */
#define LPA_RESV 0x1000 /* Unused... */
#define LPA_RFAULT 0x2000 /* Link partner faulted */
#define LPA_LPACK 0x4000 /* Link partner acked us */
#define LPA_NPAGE 0x8000 /* Next page bit */
#define LPA_DUPLEX (LPA_10FULL | LPA_100FULL)
#define LPA_100 (LPA_100FULL | LPA_100HALF | LPA_100BASE4)
/* Expansion register for auto-negotiation. */
#define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */
#define EXPANSION_LCWP 0x0002 /* Got new RX page code word */
#define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */
#define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */
#define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */
#define EXPANSION_RESV 0xffe0 /* Unused... */
#define ESTATUS_1000_XFULL 0x8000 /* Can do 1000BX Full */
#define ESTATUS_1000_XHALF 0x4000 /* Can do 1000BX Half */
#define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */
#define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */
/* N-way test register. */
#define NWAYTEST_RESV1 0x00ff /* Unused... */
#define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */
#define NWAYTEST_RESV2 0xfe00 /* Unused... */
/* 1000BASE-T Control register */
#define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */
#define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */
/* 1000BASE-T Status register */
#define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */
#define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */
#define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */
#define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */
/* Flow control flags */
#define FLOW_CTRL_TX 0x01
#define FLOW_CTRL_RX 0x02
/**
* mii_nway_result
* @negotiated: value of MII ANAR and'd with ANLPAR
*
* Given a set of MII abilities, check each bit and returns the
* currently supported media, in the priority order defined by
* IEEE 802.3u. We use LPA_xxx constants but note this is not the
* value of LPA solely, as described above.
*
* The one exception to IEEE 802.3u is that 100baseT4 is placed
* between 100T-full and 100T-half. If your phy does not support
* 100T4 this is fine. If your phy places 100T4 elsewhere in the
* priority order, you will need to roll your own function.
*/
static inline unsigned int mii_nway_result (unsigned int negotiated)
{
unsigned int ret;
if (negotiated & LPA_100FULL)
ret = LPA_100FULL;
else if (negotiated & LPA_100BASE4)
ret = LPA_100BASE4;
else if (negotiated & LPA_100HALF)
ret = LPA_100HALF;
else if (negotiated & LPA_10FULL)
ret = LPA_10FULL;
else
ret = LPA_10HALF;
return ret;
}
/**
* mii_duplex
* @duplex_lock: Non-zero if duplex is locked at full
* @negotiated: value of MII ANAR and'd with ANLPAR
*
* A small helper function for a common case. Returns one
* if the media is operating or locked at full duplex, and
* returns zero otherwise.
*/
static inline unsigned int mii_duplex (unsigned int duplex_lock,
unsigned int negotiated)
{
if (duplex_lock)
return 1;
if (mii_nway_result(negotiated) & LPA_DUPLEX)
return 1;
return 0;
}
#endif /* __LINUX_MII_H__ */
|
