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/*

* cycx_x25.h    Cyclom X.25 firmware API definitions.

*

* Author:       Arnaldo Carvalho de Melo <acme@conectiva.com.br>

*

* Copyright:    (c) 1998-2000 Arnaldo Carvalho de Melo

*

* Based on sdla_x25.h by Gene Kozin <74604.152@compuserve.com>

*

*               This program is free software; you can redistribute it and/or

*               modify it under the terms of the GNU General Public License

*               as published by the Free Software Foundation; either version

*               2 of the License, or (at your option) any later version.

* ============================================================================

* 2000/04/02    acme            dprintk and cycx_debug

* 1999/01/03    acme            judicious use of data types

* 1999/01/02    acme            #define X25_ACK_N3      0x4411

* 1998/12/28    acme            cleanup: lot'o'things removed

*                                        commands listed,

*                                        TX25Cmd & TX25Config structs

*                                        typedef'ed

*/

#ifndef _CYCX_X25_H

#define _CYCX_X25_H

#ifndef PACKED

#define PACKED __attribute__((packed))

#endif 

/* X.25 shared memory layout. */

#define X25_MBOX_OFFS   0x300   /* general mailbox block */

#define X25_RXMBOX_OFFS 0x340   /* receive mailbox */

/* Debug */

#define dprintk(level, format, a...) if (cycx_debug >= level) printk(format, ##a)

extern unsigned int cycx_debug;

/* Data Structures */

/* X.25 Command Block. */

typedef struct X25Cmd

{

        u16 command PACKED;

        u16 link    PACKED; /* values: 0 or 1 */

        u16 len     PACKED; /* values: 0 thru 0x205 (517) */

        u32 buf     PACKED;

} TX25Cmd;

/* Defines for the 'command' field. */

#define X25_CONNECT_REQUEST             0x4401

#define X25_CONNECT_RESPONSE            0x4402

#define X25_DISCONNECT_REQUEST          0x4403

#define X25_DISCONNECT_RESPONSE         0x4404

#define X25_DATA_REQUEST                0x4405

#define X25_ACK_TO_VC                   0x4406

#define X25_INTERRUPT_RESPONSE          0x4407

#define X25_CONFIG                      0x4408

#define X25_CONNECT_INDICATION          0x4409

#define X25_CONNECT_CONFIRM             0x440A

#define X25_DISCONNECT_INDICATION       0x440B

#define X25_DISCONNECT_CONFIRM          0x440C

#define X25_DATA_INDICATION             0x440E

#define X25_INTERRUPT_INDICATION        0x440F

#define X25_ACK_FROM_VC                 0x4410

#define X25_ACK_N3                      0x4411

#define X25_CONNECT_COLLISION           0x4413

#define X25_N3WIN                       0x4414

#define X25_LINE_ON                     0x4415

#define X25_LINE_OFF                    0x4416

#define X25_RESET_REQUEST               0x4417

#define X25_LOG                         0x4500

#define X25_STATISTIC                   0x4600

#define X25_TRACE                       0x4700

#define X25_N2TRACEXC                   0x4702

#define X25_N3TRACEXC                   0x4703

typedef struct X25Config {

        u8  link        PACKED; /* link number */

        u8  speed       PACKED; /* line speed */

        u8  clock       PACKED; /* internal/external */

        u8  n2          PACKED; /* # of level 2 retransm.(values: 1 thru FF) */

        u8  n2win       PACKED; /* level 2 window (values: 1 thru 7) */

        u8  n3win       PACKED; /* level 3 window (values: 1 thru 7) */

        u8  nvc         PACKED; /* # of logical channels (values: 1 thru 64) */

        u8  pktlen      PACKED; /* level 3 packet lenght - log base 2 of size */

        u8  locaddr     PACKED; /* my address */

        u8  remaddr     PACKED; /* remote address */

        u16 t1          PACKED; /* time, in seconds */

        u16 t2          PACKED; /* time, in seconds */

        u8  t21         PACKED; /* time, in seconds */

        u8  npvc        PACKED; /* # of permanent virt. circuits (1 thru nvc) */

        u8  t23         PACKED; /* time, in seconds */

        u8  flags       PACKED; /* see dosx25.doc, in portuguese, for details */

} TX25Config;

typedef struct X25Stats {

        u16 rx_crc_errors       PACKED;

        u16 rx_over_errors      PACKED;

        u16 n2_tx_frames        PACKED;

        u16 n2_rx_frames        PACKED;

        u16 tx_timeouts         PACKED;

        u16 rx_timeouts         PACKED;

        u16 n3_tx_packets       PACKED;

        u16 n3_rx_packets       PACKED;

        u16 tx_aborts           PACKED;

        u16 rx_aborts           PACKED;

} TX25Stats;

#endif  /* _CYCX_X25_H */