rcsdpaal2rxapiif.h

摩托罗拉Motolola公司网络处理器C3的示范代码.实现了ATM的AAL2层交换功能.想了解网络处理器的可以

/*
 *  FILENAME RcSdpAal2RxApi.h
 *
 *  COMMENTS This file contains the Extract Space and Merge Space Register Definitions.
 */

 /*
  *  Copyright (c) 2000, 2001 C-Port
  *  Corporation
  *  All Rights Reserved
  *
  *  The information contained in this file
  *  is confidential and proprietary.
  *  Any reproduction, use or disclosure, in
  *  whole or in part, of this
  *  program, including any attempt to
  *  obtain a human-readable version of this
  *  program, without the express, prior
  *  written consent of C-Port
  *  Corporation is strictly prohibited.
  */
#ifndef RCSDPAAL2RXAPI_H
#define RCSDPAAL2RXAPI_H

/* Start: Defines for RxSDP */
typedef struct {
    int8u               cpsHdrLen;
    int8u               cpsPayloadLen;
    int8u               pad1[2];

    int8u               cid;              /* Channel ID */
    int8u               li;               /* Length Indicator */
    int8u               uui;              /* User-to-User Indication */
    int8u               cpsPckComplete;   /* Indication of a complete CPS packet */

    int8u               goodCpsPacket;    /* Indication of good/bad (1/0) CPS packets */
    int8u               crc5Indicator;    /* Indication of success/failure (0/1) of the CRC5 */
    int8u               endOfCell;        /* End of Cell Signalling */
    int8u               extractAvailFlag; /* Indicates availability of extractspace */
} AAL2_RX_EXTRACT;
/* Finish: Defines for RxSDP */

/* Start: Defines for TxSDP */
typedef struct {
    int8u               offsetInfo  : 6; /* Offset Information : OSF(STF) + 
                                            Partial Header or Partial Payload */
    int8u               headerFlag  : 2; /* Two bit header flag   */
} STF_BYTE; 

typedef union {
    STF_BYTE            bits;
    int8u               ibyte;
} FIRST_BYTE; 

typedef struct {
    FIRST_BYTE          first_byte; 
    int8u               cidPart;         /* CID Value present in the partial header */
    int8u               liUuiPart;       /* LI_UUI Value present in the partial header */
    int8u               pad1;            /* Unused Field 1 */
    int8u               stfOffset;       /* Offset field from STF */
    int8u               pad2;                /* Unused Field 2 */
    int16u              pad3;                /* Unused Field 3 */
    int32u              payLoadWord1;        /* Partial Payload Word 1 */
    int32u              payLoadWord2;        /* Partial Payload Word 2 */
    int32u              payLoadWord3;        /* Partial Payload Word 3 */
    int32u              payLoadWord4;        /* Partial Payload Word 4 */
    int32u              cellPayLoadAddress;  /* Address of Cell Payload */
} AAL2_RX_MERGE;
/* Finish: Defines for TxSDP */

/* Defines required for TxSDP code */
#define TXSTATUS  ((int) &((SdpTxCregs*)NULL)->txStatus)
#define AAL2_RX_RC_OWN_FLG 0x80
#define MERGE     ((int) &((SdpTxCregs*)NULL)->merge)
#define AAL2_MERGE_OFFSET(param) (MERGE + (int) &((AAL2_RX_MERGE *)NULL)->param)
#define END_OF_CELL_MESSAGE 0x100
#define CellByteCnt Ireg2

/* Defines required for RxSDP code */
#define RXSTATUS  ((int) &((SdpRxCregs*)NULL)->rxStatus)
#define EXTRACT     ((int) &((SdpRxCregs*)NULL)->extract)
#define EXTRACT_SPACE_OFFSET(param) (EXTRACT + (int) &((AAL2_RX_EXTRACT *)NULL)->param)
#define CellByteCnt Ireg2

#define COUNTER                     Ireg0
#define TEMP                        Ireg1

#define CPS_HEADER_LEN              Ireg2
#define PARTIAL_PAYLOAD_LEN         Ireg3

#define CID_IREG                    Ireg4
#define LI_IREG                     Ireg5
#define UUI_IREG                    Ireg6
#define HEC_IREG                    Ireg7

#define NEW_CELL                    Ireg9

typedef volatile struct _Aal2RxByteCtrlSpc {
  int32u reserved[2];
} Aal2RxByteCtrlSpc;

typedef volatile struct _Aal2TxByteCtrlSpc {
    int32u reserved1[2];
} Aal2TxByteCtrlSpc;

#endif /* RCSDPAAL2API_H */