blob: b01cef1b62c15fc9cf5bbf51c6c26a3850f26e95 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* am7990 (lance) definitions
2 *
3 * This is an extension to the Linux operating system, and is covered by
4 * same GNU General Public License that covers that work.
5 *
6 * Michael Hipp
7 * email: mhipp@student.uni-tuebingen.de
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
89struct init_block {
90 unsigned short mode;
91 unsigned char eaddr[6];
92 unsigned char filter[8];
93 /* bit 29-31: number of rmd's (power of 2) */
94 u32 rrp; /* receive ring pointer (align 8) */
95 /* bit 29-31: number of tmd's (power of 2) */
96 u32 trp; /* transmit ring pointer (align 8) */
97};
98
99struct rmd { /* Receive Message Descriptor */
100 union {
101 volatile u32 buffer;
102 struct {
103 volatile unsigned char dummy[3];
104 volatile unsigned char status;
105 } s;
106 } u;
107 volatile short blen;
108 volatile unsigned short mlen;
109};
110
111struct tmd {
112 union {
113 volatile u32 buffer;
114 struct {
115 volatile unsigned char dummy[3];
116 volatile unsigned char status;
117 } s;
118 } u;
119 volatile unsigned short blen;
120 volatile unsigned short status2;
121};