1/*
2* cycx_x25.h	Cyclom X.25 firmware API definitions.
3*
4* Author:	Arnaldo Carvalho de Melo <acme@conectiva.com.br>
5*
6* Copyright:	(c) 1998-2000 Arnaldo Carvalho de Melo
7*
8* Based on sdla_x25.h by Gene Kozin <74604.152@compuserve.com>
9*
10*		This program is free software; you can redistribute it and/or
11*		modify it under the terms of the GNU General Public License
12*		as published by the Free Software Foundation; either version
13*		2 of the License, or (at your option) any later version.
14* ============================================================================
15* 2000/04/02	acme		dprintk and cycx_debug
16* 1999/01/03	acme		judicious use of data types
17* 1999/01/02	acme		#define X25_ACK_N3	0x4411
18* 1998/12/28	acme		cleanup: lot'o'things removed
19*					 commands listed,
20*					 TX25Cmd & TX25Config structs
21*					 typedef'ed
22*/
23#ifndef	_CYCX_X25_H
24#define	_CYCX_X25_H
25
26#ifndef PACKED
27#define PACKED __attribute__((packed))
28#endif
29
30/* X.25 shared memory layout. */
31#define	X25_MBOX_OFFS	0x300	/* general mailbox block */
32#define	X25_RXMBOX_OFFS	0x340	/* receive mailbox */
33
34/* Debug */
35#define dprintk(level, format, a...) if (cycx_debug >= level) printk(format, ##a)
36
37extern unsigned int cycx_debug;
38
39/* Data Structures */
40/* X.25 Command Block. */
41typedef struct X25Cmd
42{
43	u16 command PACKED;
44	u16 link    PACKED; /* values: 0 or 1 */
45	u16 len     PACKED; /* values: 0 thru 0x205 (517) */
46	u32 buf     PACKED;
47} TX25Cmd;
48
49/* Defines for the 'command' field. */
50#define X25_CONNECT_REQUEST             0x4401
51#define X25_CONNECT_RESPONSE            0x4402
52#define X25_DISCONNECT_REQUEST          0x4403
53#define X25_DISCONNECT_RESPONSE         0x4404
54#define X25_DATA_REQUEST                0x4405
55#define X25_ACK_TO_VC			0x4406
56#define X25_INTERRUPT_RESPONSE          0x4407
57#define X25_CONFIG                      0x4408
58#define X25_CONNECT_INDICATION          0x4409
59#define X25_CONNECT_CONFIRM             0x440A
60#define X25_DISCONNECT_INDICATION       0x440B
61#define X25_DISCONNECT_CONFIRM          0x440C
62#define X25_DATA_INDICATION             0x440E
63#define X25_INTERRUPT_INDICATION        0x440F
64#define X25_ACK_FROM_VC			0x4410
65#define X25_ACK_N3			0x4411
66#define X25_CONNECT_COLLISION           0x4413
67#define X25_N3WIN                       0x4414
68#define X25_LINE_ON                     0x4415
69#define X25_LINE_OFF                    0x4416
70#define X25_RESET_REQUEST               0x4417
71#define X25_LOG                         0x4500
72#define X25_STATISTIC                   0x4600
73#define X25_TRACE                       0x4700
74#define X25_N2TRACEXC                   0x4702
75#define X25_N3TRACEXC                   0x4703
76
77typedef struct X25Config {
78	u8  link	PACKED; /* link number */
79	u8  speed	PACKED; /* line speed */
80	u8  clock	PACKED; /* internal/external */
81	u8  n2		PACKED; /* # of level 2 retransm.(values: 1 thru FF) */
82	u8  n2win	PACKED; /* level 2 window (values: 1 thru 7) */
83	u8  n3win	PACKED; /* level 3 window (values: 1 thru 7) */
84	u8  nvc		PACKED; /* # of logical channels (values: 1 thru 64) */
85	u8  pktlen	PACKED; /* level 3 packet lenght - log base 2 of size */
86	u8  locaddr	PACKED; /* my address */
87	u8  remaddr	PACKED; /* remote address */
88	u16 t1		PACKED;	/* time, in seconds */
89	u16 t2		PACKED;	/* time, in seconds */
90	u8  t21		PACKED;	/* time, in seconds */
91	u8  npvc	PACKED;	/* # of permanent virt. circuits (1 thru nvc) */
92	u8  t23		PACKED;	/* time, in seconds */
93	u8  flags	PACKED;	/* see dosx25.doc, in portuguese, for details */
94} TX25Config;
95
96typedef struct X25Stats {
97	u16 rx_crc_errors	PACKED;
98	u16 rx_over_errors	PACKED;
99	u16 n2_tx_frames 	PACKED;
100	u16 n2_rx_frames 	PACKED;
101	u16 tx_timeouts 	PACKED;
102	u16 rx_timeouts 	PACKED;
103	u16 n3_tx_packets 	PACKED;
104	u16 n3_rx_packets 	PACKED;
105	u16 tx_aborts	 	PACKED;
106	u16 rx_aborts	 	PACKED;
107} TX25Stats;
108#endif	/* _CYCX_X25_H */
109