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1.1 root 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 ([email protected])
6: *
7: * Copied Form Linux 2.4.25 an unneeded items removed by:
8: * Timothy Legge (timlegge at etherboot dot org)
9: *
10: * 03/26/2004
11: */
12:
13: FILE_LICENCE ( GPL2_ONLY );
14:
15: #ifndef _MII_H_
16: #define _MII_H_
17:
18: /* Generic MII registers. */
19:
20: #define MII_BMCR 0x00 /* Basic mode control register */
21: #define MII_BMSR 0x01 /* Basic mode status register */
22: #define MII_PHYSID1 0x02 /* PHYS ID 1 */
23: #define MII_PHYSID2 0x03 /* PHYS ID 2 */
24: #define MII_ADVERTISE 0x04 /* Advertisement control reg */
25: #define MII_LPA 0x05 /* Link partner ability reg */
26: #define MII_EXPANSION 0x06 /* Expansion register */
27: #define MII_CTRL1000 0x09 /* 1000BASE-T control */
28: #define MII_STAT1000 0x0a /* 1000BASE-T status */
29: #define MII_ESTATUS 0x0f /* Extended Status */
30: #define MII_DCOUNTER 0x12 /* Disconnect counter */
31: #define MII_FCSCOUNTER 0x13 /* False carrier counter */
32: #define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */
33: #define MII_RERRCOUNTER 0x15 /* Receive error counter */
34: #define MII_SREVISION 0x16 /* Silicon revision */
35: #define MII_RESV1 0x17 /* Reserved... */
36: #define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */
37: #define MII_PHYADDR 0x19 /* PHY address */
38: #define MII_RESV2 0x1a /* Reserved... */
39: #define MII_TPISTATUS 0x1b /* TPI status for 10mbps */
40: #define MII_NCONFIG 0x1c /* Network interface config */
41:
42: /* Basic mode control register. */
43: #define BMCR_RESV 0x003f /* Unused... */
44: #define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */
45: #define BMCR_CTST 0x0080 /* Collision test */
46: #define BMCR_FULLDPLX 0x0100 /* Full duplex */
47: #define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */
48: #define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */
49: #define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */
50: #define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */
51: #define BMCR_SPEED100 0x2000 /* Select 100Mbps */
52: #define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */
53: #define BMCR_RESET 0x8000 /* Reset the DP83840 */
54:
55: /* Basic mode status register. */
56: #define BMSR_ERCAP 0x0001 /* Ext-reg capability */
57: #define BMSR_JCD 0x0002 /* Jabber detected */
58: #define BMSR_LSTATUS 0x0004 /* Link status */
59: #define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */
60: #define BMSR_RFAULT 0x0010 /* Remote fault detected */
61: #define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */
62: #define BMSR_RESV 0x00c0 /* Unused... */
63: #define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */
64: #define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */
65: #define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */
66: #define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */
67: #define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */
68: #define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */
69: #define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */
70: #define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */
71:
72: /* Advertisement control register. */
73: #define ADVERTISE_SLCT 0x001f /* Selector bits */
74: #define ADVERTISE_CSMA 0x0001 /* Only selector supported */
75: #define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */
76: #define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */
77: #define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */
78: #define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */
79: #define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */
80: #define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */
81: #define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */
82: #define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */
83: #define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */
84: #define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */
85: #define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */
86: #define ADVERTISE_RESV 0x1000 /* Unused... */
87: #define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */
88: #define ADVERTISE_LPACK 0x4000 /* Ack link partners response */
89: #define ADVERTISE_NPAGE 0x8000 /* Next page bit */
90:
91: #define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \
92: ADVERTISE_CSMA)
93: #define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \
94: ADVERTISE_100HALF | ADVERTISE_100FULL)
95:
96: /* Link partner ability register. */
97: #define LPA_SLCT 0x001f /* Same as advertise selector */
98: #define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */
99: #define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */
100: #define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */
101: #define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */
102: #define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */
103: #define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */
104: #define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */
105: #define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/
106: #define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */
107: #define LPA_PAUSE_CAP 0x0400 /* Can pause */
108: #define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */
109: #define LPA_RESV 0x1000 /* Unused... */
110: #define LPA_RFAULT 0x2000 /* Link partner faulted */
111: #define LPA_LPACK 0x4000 /* Link partner acked us */
112: #define LPA_NPAGE 0x8000 /* Next page bit */
113:
114: #define LPA_DUPLEX (LPA_10FULL | LPA_100FULL)
115: #define LPA_100 (LPA_100FULL | LPA_100HALF | LPA_100BASE4)
116:
117: /* Expansion register for auto-negotiation. */
118: #define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */
119: #define EXPANSION_LCWP 0x0002 /* Got new RX page code word */
120: #define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */
121: #define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */
122: #define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */
123: #define EXPANSION_RESV 0xffe0 /* Unused... */
124:
125: #define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */
126: #define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */
127:
128: /* N-way test register. */
129: #define NWAYTEST_RESV1 0x00ff /* Unused... */
130: #define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */
131: #define NWAYTEST_RESV2 0xfe00 /* Unused... */
132:
133: /* 1000BASE-T Control register */
134: #define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */
135: #define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */
136:
137: /* 1000BASE-T Status register */
138: #define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */
139: #define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */
140: #define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */
141: #define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */
142:
143: #include <ipxe/netdevice.h>
144:
145: struct mii_if_info {
146: int phy_id;
147: int advertising;
148: int phy_id_mask;
149: int reg_num_mask;
150:
151: unsigned int full_duplex : 1; /* is full duplex? */
152: unsigned int force_media : 1; /* is autoneg. disabled? */
153: unsigned int supports_gmii : 1; /* are GMII registers supported? */
154:
155: struct net_device *dev;
156: int (*mdio_read) (struct net_device *dev, int phy_id, int location);
157: void (*mdio_write) (struct net_device *dev, int phy_id, int location, int val);
158: };
159:
160:
161: extern int mii_link_ok (struct mii_if_info *mii);
162: extern void mii_check_link (struct mii_if_info *mii);
163: extern unsigned int mii_check_media (struct mii_if_info *mii,
164: unsigned int ok_to_print,
165: unsigned int init_media);
166:
167:
168: /**
169: * mii_nway_result
170: * @negotiated: value of MII ANAR and'd with ANLPAR
171: *
172: * Given a set of MII abilities, check each bit and returns the
173: * currently supported media, in the priority order defined by
174: * IEEE 802.3u. We use LPA_xxx constants but note this is not the
175: * value of LPA solely, as described above.
176: *
177: * The one exception to IEEE 802.3u is that 100baseT4 is placed
178: * between 100T-full and 100T-half. If your phy does not support
179: * 100T4 this is fine. If your phy places 100T4 elsewhere in the
180: * priority order, you will need to roll your own function.
181: */
182: static inline unsigned int mii_nway_result (unsigned int negotiated)
183: {
184: unsigned int ret;
185:
186: if (negotiated & LPA_100FULL)
187: ret = LPA_100FULL;
188: else if (negotiated & LPA_100BASE4)
189: ret = LPA_100BASE4;
190: else if (negotiated & LPA_100HALF)
191: ret = LPA_100HALF;
192: else if (negotiated & LPA_10FULL)
193: ret = LPA_10FULL;
194: else
195: ret = LPA_10HALF;
196:
197: return ret;
198: }
199:
200: /**
201: * mii_duplex
202: * @duplex_lock: Non-zero if duplex is locked at full
203: * @negotiated: value of MII ANAR and'd with ANLPAR
204: *
205: * A small helper function for a common case. Returns one
206: * if the media is operating or locked at full duplex, and
207: * returns zero otherwise.
208: */
209: static inline unsigned int mii_duplex (unsigned int duplex_lock,
210: unsigned int negotiated)
211: {
212: if (duplex_lock)
213: return 1;
214: if (mii_nway_result(negotiated) & LPA_DUPLEX)
215: return 1;
216: return 0;
217: }
218:
219: #endif
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