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#ifndef _CYCX_X25_H
#define _CYCX_X25_H
/*
* cycx_x25.h    Cyclom X.25 firmware API definitions.
*
* Author:       Arnaldo Carvalho de Melo <acme@conectiva.com.br>
*
* Copyright:    (c) 1998-2003 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 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. */
struct cycx_x25_cmd {
        u16 command PACKED;
        u16 link    PACKED; /* values: 0 or 1 */
        u16 len     PACKED; /* values: 0 thru 0x205 (517) */
        u32 buf     PACKED;
};

/* 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

/**
 *      struct cycx_x25_config - cyclom2x x25 firmware configuration
 *      @link - link number
 *      @speed - line speed
 *      @clock - internal/external
 *      @n2 - # of level 2 retransm.(values: 1 thru FF)
 *      @n2win - level 2 window (values: 1 thru 7)
 *      @n3win - level 3 window (values: 1 thru 7)
 *      @nvc - # of logical channels (values: 1 thru 64)
 *      @pktlen - level 3 packet lenght - log base 2 of size
 *      @locaddr - my address
 *      @remaddr - remote address
 *      @t1 - time, in seconds
 *      @t2 - time, in seconds
 *      @t21 - time, in seconds
 *      @npvc - # of permanent virt. circuits (1 thru nvc)
 *      @t23 - time, in seconds
 *      @flags - see dosx25.doc, in portuguese, for details
 */

struct cycx_x25_config {
        u8  link        PACKED;
        u8  speed       PACKED;
        u8  clock       PACKED;
        u8  n2          PACKED;
        u8  n2win       PACKED;
        u8  n3win       PACKED;
        u8  nvc         PACKED;
        u8  pktlen      PACKED;
        u8  locaddr     PACKED;
        u8  remaddr     PACKED;
        u16 t1          PACKED;
        u16 t2          PACKED;
        u8  t21         PACKED;
        u8  npvc        PACKED;
        u8  t23         PACKED;
        u8  flags       PACKED;
};

struct cycx_x25_stats {
        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;
};
#endif  /* _CYCX_X25_H */