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1.1 root 1: /* am7990 (lance) definitions
2: *
3: * This is an extension to the Linux operating system, and is covered by
4: * same Gnu Public License that covers that work.
5: *
6: * Michael Hipp
7: * email: [email protected]
8: *
9: * sources: (mail me or ask archie if you need them)
10: * crynwr-packet-driver
11: */
12:
13: /*
14: * Control and Status Register 0 (CSR0) bit definitions
15: * (R=Readable) (W=Writeable) (S=Set on write) (C-Clear on write)
16: *
17: */
18:
19: #define CSR0_ERR 0x8000 /* Error summary (R) */
20: #define CSR0_BABL 0x4000 /* Babble transmitter timeout error (RC) */
21: #define CSR0_CERR 0x2000 /* Collision Error (RC) */
22: #define CSR0_MISS 0x1000 /* Missed packet (RC) */
23: #define CSR0_MERR 0x0800 /* Memory Error (RC) */
24: #define CSR0_RINT 0x0400 /* Receiver Interrupt (RC) */
25: #define CSR0_TINT 0x0200 /* Transmit Interrupt (RC) */
26: #define CSR0_IDON 0x0100 /* Initialization Done (RC) */
27: #define CSR0_INTR 0x0080 /* Interrupt Flag (R) */
28: #define CSR0_INEA 0x0040 /* Interrupt Enable (RW) */
29: #define CSR0_RXON 0x0020 /* Receiver on (R) */
30: #define CSR0_TXON 0x0010 /* Transmitter on (R) */
31: #define CSR0_TDMD 0x0008 /* Transmit Demand (RS) */
32: #define CSR0_STOP 0x0004 /* Stop (RS) */
33: #define CSR0_STRT 0x0002 /* Start (RS) */
34: #define CSR0_INIT 0x0001 /* Initialize (RS) */
35:
36: #define CSR0_CLRALL 0x7f00 /* mask for all clearable bits */
37: /*
38: * Initialization Block Mode operation Bit Definitions.
39: */
40:
41: #define M_PROM 0x8000 /* Promiscuous Mode */
42: #define M_INTL 0x0040 /* Internal Loopback */
43: #define M_DRTY 0x0020 /* Disable Retry */
44: #define M_COLL 0x0010 /* Force Collision */
45: #define M_DTCR 0x0008 /* Disable Transmit CRC) */
46: #define M_LOOP 0x0004 /* Loopback */
47: #define M_DTX 0x0002 /* Disable the Transmitter */
48: #define M_DRX 0x0001 /* Disable the Receiver */
49:
50:
51: /*
52: * Receive message descriptor bit definitions.
53: */
54:
55: #define RCV_OWN 0x80 /* owner bit 0 = host, 1 = lance */
56: #define RCV_ERR 0x40 /* Error Summary */
57: #define RCV_FRAM 0x20 /* Framing Error */
58: #define RCV_OFLO 0x10 /* Overflow Error */
59: #define RCV_CRC 0x08 /* CRC Error */
60: #define RCV_BUF_ERR 0x04 /* Buffer Error */
61: #define RCV_START 0x02 /* Start of Packet */
62: #define RCV_END 0x01 /* End of Packet */
63:
64:
65: /*
66: * Transmit message descriptor bit definitions.
67: */
68:
69: #define XMIT_OWN 0x80 /* owner bit 0 = host, 1 = lance */
70: #define XMIT_ERR 0x40 /* Error Summary */
71: #define XMIT_RETRY 0x10 /* more the 1 retry needed to Xmit */
72: #define XMIT_1_RETRY 0x08 /* one retry needed to Xmit */
73: #define XMIT_DEF 0x04 /* Deferred */
74: #define XMIT_START 0x02 /* Start of Packet */
75: #define XMIT_END 0x01 /* End of Packet */
76:
77: /*
78: * transmit status (2) (valid if XMIT_ERR == 1)
79: */
80:
81: #define XMIT_TDRMASK 0x03ff /* time-domain-reflectometer-value */
82: #define XMIT_RTRY 0x0400 /* Failed after 16 retransmissions */
83: #define XMIT_LCAR 0x0800 /* Loss of Carrier */
84: #define XMIT_LCOL 0x1000 /* Late collision */
85: #define XMIT_RESERV 0x2000 /* Reserved */
86: #define XMIT_UFLO 0x4000 /* Underflow (late memory) */
87: #define XMIT_BUFF 0x8000 /* Buffering error (no ENP) */
88:
89: struct init_block
90: {
91: unsigned short mode;
92: unsigned char eaddr[6];
93: unsigned char filter[8];
94: /* bit 29-31: number of rmd's (power of 2) */
95: u32 rrp; /* receive ring pointer (align 8) */
96: /* bit 29-31: number of tmd's (power of 2) */
97: u32 trp; /* transmit ring pointer (align 8) */
98: };
99:
100: struct rmd /* Receive Message Descriptor */
101: {
102: union
103: {
104: volatile u32 buffer;
105: struct
106: {
107: volatile unsigned char dummy[3];
108: volatile unsigned char status;
109: } s;
110: } u;
111: volatile short blen;
112: volatile unsigned short mlen;
113: };
114:
115: struct tmd
116: {
117: union
118: {
119: volatile u32 buffer;
120: struct
121: {
122: volatile unsigned char dummy[3];
123: volatile unsigned char status;
124: } s;
125: } u;
126: volatile unsigned short blen;
127: volatile unsigned short status2;
128: };
129:
130:
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