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/*****************************************************************************
* sdla_x25.h    Sangoma X.25 firmware API definitions.
*
* Author:    Nenad Corbic    <ncorbic@sangoma.com>
*
* Copyright:    (c) 1995-2000 Sangoma Technologies Inc.
*
*        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.
* ============================================================================
* Feb 28, 2000  Nenad Corbic    Updated for socket based x25api
* Dec 13, 1996    Gene Kozin    Initial version
*****************************************************************************/
#ifndef    _SDLA_X25_H
#define    _SDLA_X25_H

/*----------------------------------------------------------------------------
* Notes:
* ------
* 1. All structures defined in this file are byte-alined.  
*    Compiler    Platform    
*    --------    --------
*    GNU C        Linux
*
*/

#ifndef    PACKED
#    define    PACKED    __attribute__((packed))
#endif    /* PACKED */

/******    CONSTANTS DEFINITIONS ***********************************************/

#define    X25_MAX_CHAN    255    /* max number of open X.25 circuits */
#define    X25_MAX_DATA    1024    /* max length of X.25 data buffer */
/*
* X.25 shared memory layout.
*/
#define    X25_MBOX_OFFS    0x16B0    /* general mailbox block */
#define    X25_RXMBOX_OFFS    0x1AD0    /* receive mailbox */
#define    X25_STATUS_OFFS    0x1EF0    /* X.25 status structure */
#define X25_MB_VECTOR    0xE000    /* S514 mailbox window vecotr */
#define X25_MISC_HDLC_BITS 0x1F00 /*X.25 miscallaneous HDLC bits */

/* code levels */
#define HDLC_LEVEL 0x01
#define X25_LEVEL  0x02
#define X25_AND_HDLC_LEVEL 0x03
#define DO_HDLC_LEVEL_ERROR_CHECKING 0x04

/****** DATA STRUCTURES *****************************************************/

/*----------------------------------------------------------------------------
* X.25 Command Block.
*/
typedef struct X25Cmd
{
    unsigned char command    PACKED;    /* command code */
    unsigned short length    PACKED;    /* transfer data length */
    unsigned char result    PACKED;    /* return code */
    unsigned char pf    PACKED;    /* P/F bit */
    unsigned short lcn    PACKED;    /* logical channel */
    unsigned char qdm    PACKED;    /* Q/D/M bits */
    unsigned char cause    PACKED;    /* cause field */
    unsigned char diagn    PACKED;    /* diagnostics */
    unsigned char pktType    PACKED;    /* packet type */
    unsigned char resrv[4]    PACKED;    /* reserved */
} TX25Cmd;

/*
* Defines for the 'command' field.
*/
/*----- General commands --------------*/
#define X25_SET_GLOBAL_VARS    0x0B       /* set global variables */
#define X25_READ_MODEM_STATUS    0x0C     /* read modem status */
#define X25_READ_CODE_VERSION    0x15    /* read firmware version number */
#define X25_TRACE_CONFIGURE    0x14    /* configure trace facility */
#define X25_READ_TRACE_DATA    0x16    /* read trace data */
#define    X25_SET_INTERRUPT_MODE    0x17    /* set interrupt generation mode */
#define    X25_READ_INTERRUPT_MODE    0x18    /* read interrupt generation mode */
/*----- HDLC-level commands -----------*/
#define X25_HDLC_LINK_CONFIGURE    0x01    /* configure HDLC link level */   
#define X25_HDLC_LINK_OPEN    0x02    /* open HDLC link */             
#define X25_HDLC_LINK_CLOSE    0x03    /* close HDLC link */
#define X25_HDLC_LINK_SETUP    0x04    /* set up HDLC link */
#define X25_HDLC_LINK_DISC    0x05    /* disconnect DHLC link */
#define X25_HDLC_LINK_STATUS    0x06    /* read DHLC link status */
#define X25_HDLC_READ_STATS    0x07    /* read operational statistics */
#define X25_HDLC_FLUSH_STATS    0x08     /* flush operational statistics */
#define X25_HDLC_READ_COMM_ERR    0x09     /* read error statistics */
#define X25_HDLC_FLUSH_COMM_ERR    0x0A    /* flush error statistics */
#define X25_HDLC_FLUSH_BUFFERS    0x0D    /* flush HDLC-level data buffers */
#define X25_HDLC_SPRVS_CNT_STAT 0x0F    /* read surervisory count status */
#define X25_HDLC_SEND_UI_FRAME    0x10    /* send unnumbered information frame */
#define X25_HDLC_WRITE        0x11    /* send HDLC information frame */
#define X25_HDLC_READ        0x21    /* read HDLC information frame */
#define X25_HDLC_READ_CONFIG    0x12    /* read HDLC configuration */
#define X25_HDLC_SET_CONFIG    0x13    /* set HDLC configuration */
#define SET_PROTOCOL_LEVEL    0x1F    /* set protocol level */
/*----- X.25-level commands -----------*/
#define X25_READ        0x22    /* read X.25 packet */
#define X25_WRITE        0x23    /* send X.25 packet */
#define X25_PLACE_CALL        0x30    /* place a call on SVC */
#define X25_ACCEPT_CALL        0x31    /* accept incomming call */
#define X25_CLEAR_CALL        0x32    /* clear call */
#define X25_CLEAR_CONFRM    0x33    /* send clear confirmation packet */
#define X25_RESET        0x34    /* send reset request packet */
#define X25_RESET_CONFRM    0x35    /* send reset confirmation packet */
#define X25_RESTART        0x36    /* send restart request packet */
#define X25_RESTART_CONFRM    0x37    /* send restart confirmation packet */
#define X25_INTERRUPT        0x38    /* send interrupt request packet */
#define X25_INTERRUPT_CONFRM    0x39    /* send interrupt confirmation pkt */
#define X25_REGISTRATION_RQST    0x3A    /* send registration request packet */
#define X25_REGISTRATION_CONFRM    0x3B    /* send registration confirmation */
#define X25_IS_DATA_AVAILABLE    0x40    /* querry receive queue */
#define X25_INCOMMING_CALL_CTL    0x41    /* select incomming call options */
#define X25_CONFIGURE_PVC    0x42    /* configure PVC */
#define X25_GET_ACTIVE_CHANNELS    0x43    /* get a list of active circuits */
#define X25_READ_CHANNEL_CONFIG    0x44    /* read virt. circuit configuration */
#define X25_FLUSH_DATA_BUFFERS    0x45    /* flush X.25-level data buffers */
#define X25_READ_HISTORY_TABLE    0x46    /* read asynchronous event log */
#define X25_HISTORY_TABLE_CTL    0x47    /* control asynchronous event log */
#define    X25_GET_TX_D_BIT_STATUS    0x48    /* is packet with D-bit acknowleged */
#define    X25_READ_STATISTICS    0x49    /* read X.25-level statistics */
#define    X25_FLUSH_STATISTICS    0x4A    /* flush X.25-level statistics */
#define    X25_READ_CONFIGURATION    0x50    /* read HDLC & X.25 configuration */
#define    X25_SET_CONFIGURATION    0x51    /* set HDLC & X.25 configuration */

/*
* Defines for the 'result' field.
*/
/*----- General results ---------------*/
#define X25RES_OK        0x00
#define X25RES_ERROR        0x01
#define X25RES_LINK_NOT_IN_ABM    0x02    /* link is not in ABM mode */
#define X25RES_LINK_CLOSED    0x03
#define X25RES_INVAL_LENGTH    0x04
#define X25RES_INVAL_CMD    0x05
#define X25RES_UNNUMBERED_FRAME    0x06    /* unnunbered frame received */
#define X25RES_FRM_REJECT_MODE    0x07    /* link is in Frame Reject mode */
#define X25RES_MODEM_FAILURE    0x08    /* DCD and/or CTS dropped */
#define X25RES_N2_RETRY_LIMIT    0x09    /* N2 retry limit has been exceeded */
#define X25RES_INVAL_LCN    0x30    /* invalid logical channel number */
#define X25RES_INVAL_STATE    0x31    /* channel is not in data xfer mode */
#define X25RES_INVAL_DATA_LEN    0x32    /* invalid data length */
#define X25RES_NOT_READY    0x33    /* no data available / buffers full */
#define X25RES_NETWORK_DOWN    0x34
#define X25RES_CHANNEL_IN_USE    0x35    /* there is data queued on this LCN */
#define X25RES_REGST_NOT_SUPPRT    0x36    /* registration not supported */
#define X25RES_INVAL_FORMAT    0x37    /* invalid packet format */
#define X25RES_D_BIT_NOT_SUPPRT    0x38    /* D-bit pragmatics not supported */
#define X25RES_FACIL_NOT_SUPPRT    0x39    /* Call facility not supported */
#define X25RES_INVAL_CALL_ARG    0x3A    /* errorneous call arguments */
#define X25RES_INVAL_CALL_DATA    0x3B    /* errorneous call user data */
#define X25RES_ASYNC_PACKET    0x40    /* asynchronous packet received */
#define X25RES_PROTO_VIOLATION    0x41    /* protocol violation occured */
#define X25RES_PKT_TIMEOUT    0x42    /* X.25 packet time out */
#define X25RES_PKT_RETRY_LIMIT    0x43    /* X.25 packet retry limit exceeded */
/*----- Command-dependant results -----*/
#define X25RES_LINK_DISC    0x00    /* HDLC_LINK_STATUS */
#define X25RES_LINK_IN_ABM    0x01    /* HDLC_LINK_STATUS */
#define X25RES_NO_DATA        0x01    /* HDLC_READ/READ_TRACE_DATA*/
#define X25RES_TRACE_INACTIVE    0x02    /* READ_TRACE_DATA */
#define X25RES_LINK_IS_OPEN    0x01    /* HDLC_LINK_OPEN */
#define X25RES_LINK_IS_DISC    0x02    /* HDLC_LINK_DISC */
#define X25RES_LINK_IS_CLOSED    0x03    /* HDLC_LINK_CLOSE */
#define X25RES_INVAL_PARAM    0x31    /* INCOMMING_CALL_CTL */
#define X25RES_INVAL_CONFIG    0x35    /* REGISTR_RQST/CONFRM */

/*
* Defines for the 'qdm_bits' field.
*/
#define X25CMD_Q_BIT_MASK    0x04
#define X25CMD_D_BIT_MASK    0x02
#define X25CMD_M_BIT_MASK    0x01

/*
* Defines for the 'pkt_type' field.
*/
/*----- Asynchronous events ------*/
#define ASE_CLEAR_RQST        0x02
#define ASE_RESET_RQST        0x04
#define ASE_RESTART_RQST    0x08
#define ASE_INTERRUPT        0x10
#define ASE_DTE_REGISTR_RQST    0x20
#define ASE_CALL_RQST        0x30
#define ASE_CALL_ACCEPTED    0x31
#define ASE_CLEAR_CONFRM    0x32
#define ASE_RESET_CONFRM    0x33
#define ASE_RESTART_CONFRM    0x34
#define ASE_INTERRUPT_CONFRM    0x35
#define ASE_DCE_REGISTR_CONFRM    0x36
#define ASE_DIAGNOSTIC        0x37
#define ASE_CALL_AUTO_CLEAR    0x38
#define AUTO_RESPONSE_FLAG    0x80
/*----- Time-Out events ----------*/
#define TOE_RESTART_RQST    0x03
#define TOE_CALL_RQST        0x05
#define TOE_CLEAR_RQST        0x08
#define TOE_RESET_RQST        0x0A
/*----- Protocol Violation events */
#define PVE_CLEAR_RQST        0x32
#define PVE_RESET_RQST        0x33
#define PVE_RESTART_RQST    0x34
#define PVE_DIAGNOSTIC        0x37

#define INTR_ON_RX_FRAME            0x01
#define INTR_ON_TX_FRAME            0x02
#define INTR_ON_MODEM_STATUS_CHANGE 0x04
#define INTR_ON_COMMAND_COMPLETE    0x08
#define INTR_ON_X25_ASY_TRANSACTION 0x10
#define INTR_ON_TIMER            0x40
#define DIRECT_RX_INTR_USAGE        0x80

#define NO_INTR_PENDING              0x00
#define RX_INTR_PENDING            0x01    
#define TX_INTR_PENDING            0x02
#define MODEM_INTR_PENDING        0x04
#define COMMAND_COMPLETE_INTR_PENDING     0x08
#define X25_ASY_TRANS_INTR_PENDING    0x10
#define TIMER_INTR_PENDING        0x40

/*----------------------------------------------------------------------------
* X.25 Mailbox.
*    This structure is located at offsets X25_MBOX_OFFS and X25_RXMBOX_OFFS
*    into shared memory window.
*/
typedef struct X25Mbox
{
    unsigned char opflag    PACKED;    /* 00h: execution flag */
    TX25Cmd cmd        PACKED;    /* 01h: command block */
    unsigned char data[1]    PACKED;    /* 10h: data buffer */
} TX25Mbox;

/*----------------------------------------------------------------------------
* X.25 Time Stamp Structure.
*/
typedef struct X25TimeStamp
{
    unsigned char month    PACKED;
    unsigned char date    PACKED;
    unsigned char sec    PACKED;
    unsigned char min    PACKED;
    unsigned char hour    PACKED;
} TX25TimeStamp;

/*----------------------------------------------------------------------------
* X.25 Status Block.
*    This structure is located at offset X25_STATUS_OFF into shared memory
*    window.
*/
typedef struct X25Status
{
    unsigned short pvc_map    PACKED;    /* 00h: PVC map */
    unsigned short icc_map    PACKED;    /* 02h: Incomming Chan. map */
    unsigned short twc_map    PACKED;    /* 04h: Two-way Cnan. map */
    unsigned short ogc_map    PACKED;    /* 06h: Outgoing Chan. map */
    TX25TimeStamp tstamp    PACKED;    /* 08h: timestamp (BCD) */
    unsigned char iflags    PACKED;    /* 0Dh: interrupt flags */
    unsigned char imask     PACKED; /* 0Eh: interrupt mask  */
    unsigned char resrv    PACKED;    /* 0Eh: */
    unsigned char gflags    PACKED;    /* 10h: misc. HDLC/X25 flags */
    unsigned char cflags[X25_MAX_CHAN] PACKED; /* channel status bytes */
} TX25Status;

/*
* Bitmasks for the 'iflags' field.
*/
#define X25_RX_INTR    0x01    /* receive interrupt */
#define X25_TX_INTR    0x02    /* transmit interrupt */
#define X25_MODEM_INTR    0x04    /* modem status interrupt (CTS/DCD) */
#define X25_EVENT_INTR    0x10    /* asyncronous event encountered */
#define X25_CMD_INTR    0x08    /* interface command complete */

/*
* Bitmasks for the 'gflags' field.
*/
#define X25_HDLC_ABM    0x01    /* HDLC is in ABM mode */
#define X25_RX_READY    0x02    /* X.25 data available */
#define X25_TRACE_READY    0x08    /* trace data available */
#define X25_EVENT_IND    0x20    /* asynchronous event indicator */
#define X25_TX_READY    0x40    /* space is available in Tx buf.*/

/*
* Bitmasks for the 'cflags' field.
*/
#define X25_XFER_MODE    0x80    /* channel is in data transfer mode */
#define X25_TXWIN_OPEN    0x40    /* transmit window open */
#define X25_RXBUF_MASK    0x3F    /* number of data buffers available */

/*****************************************************************************
* Following definitions structurize contents of the TX25Mbox.data field for
* different X.25 interface commands.
****************************************************************************/

/* ---------------------------------------------------------------------------
* X25_SET_GLOBAL_VARS Command.
*/
typedef struct X25GlobalVars
{
    unsigned char resrv    PACKED;    /* 00h: reserved */
    unsigned char dtrCtl    PACKED;    /* 01h: DTR control code */
    unsigned char resErr    PACKED;    /* 01h: '1' - reset modem error */
} TX25GlobalVars;

/*
* Defines for the 'dtrCtl' field.
*/
#define X25_RAISE_DTR    0x01
#define X25_DROP_DTR    0x02

/* ---------------------------------------------------------------------------
* X25_READ_MODEM_STATUS Command.
*/
typedef struct X25ModemStatus
{
    unsigned char    status    PACKED;        /* 00h: modem status */
} TX25ModemStatus;

/*
* Defines for the 'status' field.
*/
#define X25_CTS_MASK    0x20
#define X25_DCD_MASK    0x08

/* ---------------------------------------------------------------------------
* X25_HDLC_LINK_STATUS Command.
*/
typedef struct X25LinkStatus
{
    unsigned char txQueued    PACKED;    /* 00h: queued Tx I-frames*/
    unsigned char rxQueued    PACKED;    /* 01h: queued Rx I-frames*/
    unsigned char station    PACKED;    /* 02h: DTE/DCE config. */
    unsigned char reserved    PACKED;    /* 03h: reserved */
    unsigned char sfTally    PACKED;    /* 04h: supervisory frame tally */
} TX25LinkStatus;

/*
* Defines for the 'station' field.
*/
#define    X25_STATION_DTE    0x01    /* station configured as DTE */
#define X25_STATION_DCE    0x02    /* station configured as DCE */

/* ---------------------------------------------------------------------------
* X25_HDLC_READ_STATS Command.
*/
typedef struct HdlcStats
{                        /*    a number of ... */
    unsigned short rxIFrames    PACKED;    /* 00h: ready Rx I-frames */
    unsigned short rxNoseq        PACKED;    /* 02h: frms out-of-sequence */
    unsigned short rxNodata        PACKED;    /* 04h: I-frms without data */
    unsigned short rxDiscarded    PACKED;    /* 06h: discarded frames */
    unsigned short rxTooLong    PACKED;    /* 08h: frames too long */
    unsigned short rxBadAddr    PACKED;    /* 0Ah: frms with inval.addr*/
    unsigned short txAcked        PACKED;    /* 0Ch: acknowledged I-frms */
    unsigned short txRetransm    PACKED;    /* 0Eh: re-transmit. I-frms */
    unsigned short t1Timeout    PACKED;    /* 10h: T1 timeouts */
    unsigned short rxSABM        PACKED;    /* 12h: received SABM frames */
    unsigned short rxDISC        PACKED;    /* 14h: received DISC frames */
    unsigned short rxDM        PACKED;    /* 16h: received DM frames */
    unsigned short rxFRMR        PACKED;    /* 18h: FRMR frames received */
    unsigned short txSABM        PACKED;    /* 1Ah: transm. SABM frames*/
    unsigned short txDISC        PACKED;    /* 1Ch: transm. DISC frames*/
    unsigned short txDM        PACKED;    /* 1Eh: transm. DM frames */
    unsigned short txFRMR        PACKED;    /* 20h: transm. FRMR frames*/
} THdlcStats;

/* ---------------------------------------------------------------------------
* X25_HDLC_READ_COMM_ERR Command.
*/
typedef struct HdlcCommErr
{                        /*    a number of ... */
    unsigned char rxOverrun        PACKED;    /* 00h: Rx overrun errors */
    unsigned char rxBadCrc        PACKED;    /* 01h: Rx CRC errors */
    unsigned char rxAborted        PACKED;    /* 02h: Rx aborted frames */
    unsigned char rxDropped        PACKED;    /* 03h: frames lost */
    unsigned char txAborted        PACKED;    /* 04h: Tx aborted frames */
    unsigned char txUnderrun    PACKED;    /* 05h: Tx underrun errors */
    unsigned char txMissIntr    PACKED;    /* 06h: missed underrun ints */
    unsigned char reserved        PACKED;    /* 07h: reserved */
    unsigned char droppedDCD    PACKED;    /* 08h: times DCD dropped */
    unsigned char droppedCTS    PACKED;    /* 09h: times CTS dropped */
} THdlcCommErr;

/* ---------------------------------------------------------------------------
* X25_SET_CONFIGURATION & X25_READ_CONFIGURATION Commands.
*/
typedef struct X25Config
{
unsigned char baudRate        PACKED;    /* 00h:  */
    unsigned char t1        PACKED;    /* 01h:  */
    unsigned char t2        PACKED;    /* 02h:  */
    unsigned char n2        PACKED;    /* 03h:  */
    unsigned short hdlcMTU        PACKED;    /* 04h:  */
    unsigned char hdlcWindow    PACKED;    /* 06h:  */
    unsigned char t4        PACKED;    /* 07h:  */
    unsigned char autoModem        PACKED;    /* 08h:  */
    unsigned char autoHdlc        PACKED;    /* 09h:  */
    unsigned char hdlcOptions    PACKED;    /* 0Ah:  */
    unsigned char station        PACKED;    /* 0Bh:  */
    unsigned char pktWindow        PACKED;    /* 0Ch:  */
    unsigned short defPktSize    PACKED;    /* 0Dh:  */
    unsigned short pktMTU        PACKED;    /* 0Fh:  */
    unsigned short loPVC        PACKED;    /* 11h:  */
    unsigned short hiPVC        PACKED;    /* 13h:  */
    unsigned short loIncommingSVC    PACKED;    /* 15h:  */
    unsigned short hiIncommingSVC    PACKED;    /* 17h:  */
    unsigned short loTwoWaySVC    PACKED;    /* 19h:  */
    unsigned short hiTwoWaySVC    PACKED;    /* 1Bh:  */
    unsigned short loOutgoingSVC    PACKED;    /* 1Dh:  */
    unsigned short hiOutgoingSVC    PACKED;    /* 1Fh:  */
    unsigned short options        PACKED;    /* 21h:  */
    unsigned char responseOpt    PACKED;    /* 23h:  */
    unsigned short facil1        PACKED;    /* 24h:  */
    unsigned short facil2        PACKED;    /* 26h:  */
    unsigned short ccittFacil    PACKED;    /* 28h:  */
    unsigned short otherFacil    PACKED;    /* 2Ah:  */
    unsigned short ccittCompat    PACKED;    /* 2Ch:  */
    unsigned char t10t20        PACKED;    /* 2Eh:  */
    unsigned char t11t21        PACKED;    /* 2Fh:  */
    unsigned char t12t22        PACKED;    /* 30h:  */
    unsigned char t13t23        PACKED;    /* 31h:  */
    unsigned char t16t26        PACKED;    /* 32H:  */
    unsigned char t28        PACKED;    /* 33h:  */
    unsigned char r10r20        PACKED;    /* 34h:  */
    unsigned char r12r22        PACKED;    /* 35h:  */
    unsigned char r13r23        PACKED;    /* 36h:  */
} TX25Config;

/* ---------------------------------------------------------------------------
* X25_READ_CHANNEL_CONFIG Command.
*/
typedef struct X25ChanAlloc            /*----- Channel allocation -*/
{
    unsigned short loPVC        PACKED;    /* 00h: lowest PVC number */
    unsigned short hiPVC        PACKED;    /* 02h: highest PVC number */
    unsigned short loIncommingSVC    PACKED;    /* 04h: lowest incoming SVC */
    unsigned short hiIncommingSVC    PACKED;    /* 06h: highest incoming SVC */
    unsigned short loTwoWaySVC    PACKED;    /* 08h: lowest two-way SVC */
    unsigned short hiTwoWaySVC    PACKED;    /* 0Ah: highest two-way SVC */
    unsigned short loOutgoingSVC    PACKED;    /* 0Ch: lowest outgoing SVC */
    unsigned short hiOutgoingSVC    PACKED;    /* 0Eh: highest outgoing SVC */
} TX25ChanAlloc;

typedef struct X25ChanCfg        /*------ Channel configuration -----*/
{
    unsigned char type    PACKED;    /* 00h: channel type */
    unsigned char txConf    PACKED;    /* 01h: Tx packet and window sizes */
    unsigned char rxConf    PACKED;    /* 01h: Rx packet and window sizes */
} TX25ChanCfg;

/*
* Defines for the 'type' field.
*/
#define    X25_PVC     0x01    /* PVC */
#define    X25_SVC_IN    0x03    /* Incoming SVC */
#define    X25_SVC_TWOWAY    0x07    /* Two-way SVC */
#define    X25_SVC_OUT    0x0B    /* Outgoing SVC */

/*----------------------------------------------------------------------------
* X25_READ_STATISTICS Command.
*/
typedef struct X25Stats
{                        /* number of packets Tx/Rx'ed */
    unsigned short txRestartRqst    PACKED;    /* 00h: Restart Request */
    unsigned short rxRestartRqst    PACKED;    /* 02h: Restart Request */
    unsigned short txRestartConf    PACKED;    /* 04h: Restart Confirmation */
    unsigned short rxRestartConf    PACKED;    /* 06h: Restart Confirmation */
    unsigned short txResetRqst    PACKED;    /* 08h: Reset Request */
    unsigned short rxResetRqst    PACKED;    /* 0Ah: Reset Request */
    unsigned short txResetConf    PACKED;    /* 0Ch: Reset Confirmation */
    unsigned short rxResetConf    PACKED;    /* 0Eh: Reset Confirmation */
    unsigned short txCallRequest    PACKED;    /* 10h: Call Request */
    unsigned short rxCallRequest    PACKED;    /* 12h: Call Request */
    unsigned short txCallAccept    PACKED;    /* 14h: Call Accept */
    unsigned short rxCallAccept    PACKED;    /* 16h: Call Accept */
    unsigned short txClearRqst    PACKED;    /* 18h: Clear Request */
    unsigned short rxClearRqst    PACKED;    /* 1Ah: Clear Request */
    unsigned short txClearConf    PACKED;    /* 1Ch: Clear Confirmation */
    unsigned short rxClearConf    PACKED;    /* 1Eh: Clear Confirmation */
    unsigned short txDiagnostic    PACKED;    /* 20h: Diagnostic */
    unsigned short rxDiagnostic    PACKED;    /* 22h: Diagnostic */
    unsigned short txRegRqst    PACKED;    /* 24h: Registration Request */
    unsigned short rxRegRqst    PACKED;    /* 26h: Registration Request */
    unsigned short txRegConf    PACKED;    /* 28h: Registration Confirm.*/
    unsigned short rxRegConf    PACKED;    /* 2Ah: Registration Confirm.*/
    unsigned short txInterrupt    PACKED;    /* 2Ch: Interrupt */
    unsigned short rxInterrupt    PACKED;    /* 2Eh: Interrupt */
    unsigned short txIntrConf    PACKED;    /* 30h: Interrupt Confirm. */
    unsigned short rxIntrConf    PACKED;    /* 32h: Interrupt Confirm. */
    unsigned short txData        PACKED;    /* 34h: Data */
    unsigned short rxData        PACKED;    /* 36h: Data */
    unsigned short txRR        PACKED;    /* 38h: RR */
    unsigned short rxRR        PACKED;    /* 3Ah: RR */
    unsigned short txRNR        PACKED;    /* 3Ch: RNR */
    unsigned short rxRNR        PACKED;    /* 3Eh: RNR */
} TX25Stats;

/*----------------------------------------------------------------------------
* X25_READ_HISTORY_TABLE Command.
*/
typedef struct X25EventLog
{
    unsigned char    type    PACKED;    /* 00h: transaction type */
    unsigned short    lcn    PACKED;    /* 01h: logical channel num */
    unsigned char    packet    PACKED;    /* 03h: async packet type */
    unsigned char    cause    PACKED;    /* 04h: X.25 cause field */
    unsigned char    diag    PACKED;    /* 05h: X.25 diag field */
    TX25TimeStamp    ts    PACKED;    /* 06h: time stamp */
} TX25EventLog;

/*
* Defines for the 'type' field.
*/
#define X25LOG_INCOMMING    0x00
#define X25LOG_APPLICATION     0x01
#define X25LOG_AUTOMATIC    0x02
#define X25LOG_ERROR        0x04
#define X25LOG_TIMEOUT        0x08
#define X25LOG_RECOVERY        0x10

/*
* Defines for the 'packet' field.
*/
#define X25LOG_CALL_RQST    0x0B
#define X25LOG_CALL_ACCEPTED    0x0F
#define X25LOG_CLEAR_RQST    0x13
#define X25LOG_CLEAR_CONFRM    0x17
#define X25LOG_RESET_RQST    0x1B
#define X25LOG_RESET_CONFRM    0x1F
#define X25LOG_RESTART_RQST    0xFB
#define X25LOG_RESTART_COMFRM    0xFF
#define X25LOG_DIAGNOSTIC    0xF1
#define X25LOG_DTE_REG_RQST    0xF3
#define X25LOG_DTE_REG_COMFRM    0xF7

/* ---------------------------------------------------------------------------
* X25_TRACE_CONFIGURE Command.
*/
typedef struct X25TraceCfg
{
    unsigned char flags    PACKED;    /* 00h: trace configuration flags */
    unsigned char timeout    PACKED;    /* 01h: timeout for trace delay mode*/
} TX25TraceCfg;

/*
* Defines for the 'flags' field.
*/
#define X25_TRC_ENABLE        0x01    /* bit0: '1' - trace enabled */
#define X25_TRC_TIMESTAMP    0x02    /* bit1: '1' - time stamping enabled*/
#define X25_TRC_DELAY        0x04    /* bit2: '1' - trace delay enabled */
#define X25_TRC_DATA        0x08    /* bit3: '1' - trace data packets */
#define X25_TRC_SUPERVISORY    0x10    /* bit4: '1' - trace suprvisory pkts*/
#define X25_TRC_ASYNCHRONOUS    0x20    /* bit5: '1' - trace asynch. packets*/
#define X25_TRC_HDLC        0x40    /* bit6: '1' - trace all packets */
#define X25_TRC_READ        0x80    /* bit7: '1' - get current config. */

/* ---------------------------------------------------------------------------
* X25_READ_TRACE_DATA Command.
*/
typedef struct X25Trace            /*----- Trace data structure -------*/
{
    unsigned short length    PACKED;    /* 00h: trace data length */
    unsigned char type    PACKED;    /* 02h: trace type */
    unsigned char lost_cnt    PACKED;    /* 03h: N of traces lost */
    TX25TimeStamp tstamp    PACKED;    /* 04h: mon/date/sec/min/hour */
    unsigned short millisec    PACKED;    /* 09h: ms time stamp */
    unsigned char data[0]    PACKED;    /* 0Bh: traced frame */
} TX25Trace;

/*
* Defines for the 'type' field.
*/
#define X25_TRC_TYPE_MASK    0x0F    /* bits 0..3: trace type */
#define X25_TRC_TYPE_RX_FRAME    0x00    /* received frame trace */
#define X25_TRC_TYPE_TX_FRAME    0x01    /* transmitted frame */
#define X25_TRC_TYPE_ERR_FRAME    0x02    /* error frame */

#define X25_TRC_ERROR_MASK    0xF0    /* bits 4..7: error code */
#define X25_TRCERR_RX_ABORT    0x10    /* receive abort error */
#define X25_TRCERR_RX_BADCRC    0x20    /* receive CRC error */
#define X25_TRCERR_RX_OVERRUN    0x30    /* receiver overrun error */
#define X25_TRCERR_RX_TOO_LONG    0x40    /* excessive frame length error */
#define X25_TRCERR_TX_ABORT    0x70    /* aborted frame transmittion error */
#define X25_TRCERR_TX_UNDERRUN    0x80    /* transmit underrun error */

/*****************************************************************************
* Following definitions describe HDLC frame and X.25 packet formats.
****************************************************************************/

typedef struct HDLCFrame        /*----- DHLC Frame Format ----------*/
{
    unsigned char addr    PACKED;    /* address field */
    unsigned char cntl    PACKED;    /* control field */
    unsigned char data[0]    PACKED;
} THDLCFrame;

typedef struct X25Pkt            /*----- X.25 Paket Format ----------*/
{
    unsigned char lcn_hi    PACKED;    /* 4 MSB of Logical Channel Number */
    unsigned char lcn_lo    PACKED;    /* 8 LSB of Logical Channel Number */
    unsigned char type    PACKED;
    unsigned char data[0]    PACKED;
} TX25Pkt;

/*
* Defines for the 'lcn_hi' field.
*/
#define    X25_Q_BIT_MASK        0x80    /* Data Qualifier Bit mask */
#define    X25_D_BIT_MASK        0x40    /* Delivery Confirmation Bit mask */
#define    X25_M_BITS_MASK        0x30    /* Modulo Bits mask */
#define    X25_LCN_MSB_MASK    0x0F    /* LCN most significant bits mask */

/*
* Defines for the 'type' field.
*/
#define    X25PKT_DATA        0x01    /* Data packet mask */
#define    X25PKT_SUPERVISORY    0x02    /* Supervisory packet mask */
#define    X25PKT_CALL_RQST    0x0B    /* Call Request/Incoming */
#define    X25PKT_CALL_ACCEPTED    0x0F    /* Call Accepted/Connected */
#define    X25PKT_CLEAR_RQST    0x13    /* Clear Request/Indication */
#define    X25PKT_CLEAR_CONFRM    0x17    /* Clear Confirmation */
#define    X25PKT_RESET_RQST    0x1B    /* Reset Request/Indication */
#define    X25PKT_RESET_CONFRM    0x1F    /* Reset Confirmation */
#define    X25PKT_RESTART_RQST    0xFB    /* Restart Request/Indication */
#define    X25PKT_RESTART_CONFRM    0xFF    /* Restart Confirmation */
#define    X25PKT_INTERRUPT    0x23    /* Interrupt */
#define    X25PKT_INTERRUPT_CONFRM    0x27    /* Interrupt Confirmation */
#define    X25PKT_DIAGNOSTIC    0xF1    /* Diagnostic */
#define    X25PKT_REGISTR_RQST    0xF3    /* Registration Request */
#define    X25PKT_REGISTR_CONFRM    0xF7    /* Registration Confirmation */
#define    X25PKT_RR_MASKED    0x01    /* Receive Ready packet after masking */
#define    X25PKT_RNR_MASKED    0x05    /* Receive Not Ready after masking  */


typedef struct {
    TX25Cmd cmd        PACKED;
    char data[X25_MAX_DATA]    PACKED;
} mbox_cmd_t;


typedef struct {
    unsigned char  qdm    PACKED;    /* Q/D/M bits */
    unsigned char  cause    PACKED;    /* cause field */
    unsigned char  diagn    PACKED;    /* diagnostics */
    unsigned char  pktType  PACKED;
    unsigned short length   PACKED;
    unsigned char  result    PACKED;
    unsigned short lcn    PACKED;
    char reserved[7]    PACKED;
}x25api_hdr_t;


typedef struct {
    x25api_hdr_t hdr    PACKED;
    char data[X25_MAX_DATA]    PACKED;
}x25api_t;


/*
* XPIPEMON Definitions
*/

/* valid ip_protocol for UDP management */
#define UDPMGMT_UDP_PROTOCOL 0x11
#define UDPMGMT_XPIPE_SIGNATURE         "XLINK8ND"
#define UDPMGMT_DRVRSTATS_SIGNATURE     "DRVSTATS"

/* values for request/reply byte */
#define UDPMGMT_REQUEST    0x01
#define UDPMGMT_REPLY    0x02
#define UDP_OFFSET    12


typedef struct {
    unsigned char opp_flag  PACKED; /* the opp flag */
    unsigned char command    PACKED;    /* command code */
    unsigned short length    PACKED;    /* transfer data length */
    unsigned char result    PACKED;    /* return code */
    unsigned char pf    PACKED;    /* P/F bit */
    unsigned short lcn    PACKED;    /* logical channel */
    unsigned char qdm    PACKED;    /* Q/D/M bits */
    unsigned char cause    PACKED;    /* cause field */
    unsigned char diagn    PACKED;    /* diagnostics */
    unsigned char pktType    PACKED;    /* packet type */
    unsigned char resrv[4]    PACKED;    /* reserved */
} cblock_t;

typedef struct {
    ip_pkt_t         ip_pkt        PACKED;
    udp_pkt_t        udp_pkt        PACKED;
    wp_mgmt_t         wp_mgmt           PACKED;
        cblock_t                cblock          PACKED;
        unsigned char           data[4080]      PACKED;
} x25_udp_pkt_t;


typedef struct read_hdlc_stat {
    unsigned short inf_frames_rx_ok PACKED;
        unsigned short inf_frames_rx_out_of_seq PACKED;
    unsigned short inf_frames_rx_no_data PACKED;
    unsigned short inf_frames_rx_dropped PACKED;
    unsigned short inf_frames_rx_data_too_long PACKED;
    unsigned short inf_frames_rx_invalid_addr PACKED;
    unsigned short inf_frames_tx_ok PACKED;
        unsigned short inf_frames_tx_retransmit PACKED;
           unsigned short T1_timeouts PACKED;
    unsigned short SABM_frames_rx PACKED;
    unsigned short DISC_frames_rx PACKED;
    unsigned short DM_frames_rx PACKED;
    unsigned short FRMR_frames_rx PACKED;
    unsigned short SABM_frames_tx PACKED;
    unsigned short DISC_frames_tx PACKED;
    unsigned short DM_frames_tx PACKED;
    unsigned short FRMR_frames_tx PACKED;
} read_hdlc_stat_t;

typedef struct read_comms_err_stats{
    unsigned char overrun_err_rx PACKED;
    unsigned char CRC_err PACKED;
    unsigned char abort_frames_rx PACKED;
    unsigned char frames_dropped_buf_full PACKED;
    unsigned char abort_frames_tx PACKED;
    unsigned char transmit_underruns PACKED;
    unsigned char missed_tx_underruns_intr PACKED;
    unsigned char reserved PACKED;
    unsigned char DCD_drop PACKED;
    unsigned char CTS_drop PACKED;
} read_comms_err_stats_t;

typedef struct trace_data {
    unsigned short length PACKED;
    unsigned char  type PACKED;
    unsigned char  trace_dropped PACKED;
    unsigned char  reserved[5] PACKED;
    unsigned short timestamp PACKED;
        unsigned char  data PACKED;
} trace_data_t;

enum {UDP_XPIPE_TYPE};

#define XPIPE_ENABLE_TRACING                    0x14
#define XPIPE_DISABLE_TRACING                   0x14
#define XPIPE_GET_TRACE_INFO                    0x16
#define XPIPE_FT1_READ_STATUS                   0x74
#define XPIPE_DRIVER_STAT_IFSEND                0x75
#define XPIPE_DRIVER_STAT_INTR                  0x76
#define XPIPE_DRIVER_STAT_GEN                   0x77
#define XPIPE_FLUSH_DRIVER_STATS                0x78
#define XPIPE_ROUTER_UP_TIME                    0x79        
#define XPIPE_SET_FT1_MODE            0x81
#define XPIPE_FT1_STATUS_CTRL            0x80


/* error messages */
#define NO_BUFFS_OR_CLOSED_WIN  0x33
#define DATA_LENGTH_TOO_BIG     0x32
#define NO_DATA_AVAILABLE       0x33
#define Z80_TIMEOUT_ERROR       0x0a   
#define    NO_BUFFS        0x08


/* Trace options */
#define TRACE_DEFAULT        0x03
#define TRACE_SUPERVISOR_FRMS    0x10
#define TRACE_ASYNC_FRMS    0x20
#define TRACE_ALL_HDLC_FRMS    0x40
#define TRACE_DATA_FRMS        0x08


#endif    /* _SDLA_X25_H */

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