view src/g23m-gsm/dl/dl.h @ 640:16eb1b9640dc

target gtm900 renamed to gtm900mgc2 This change reflects the fact that the build target in question supports MGC2GSMT hardware only, and will NOT work on other hw that confusing bears the same end user name of GTM900, neither the LoCosto-based GTM900-C nor the Calypso-based MG01GSMT that has a different and incompatible RFFE. If we ever get our hands on a piece of MG01GSMT hw and add support for it, that other target will be named gtm900mg01.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 31 Jan 2020 00:46:07 +0000
parents 27a4235405c6
children
line wrap: on
line source

/*
+-----------------------------------------------------------------------------
|  Project :  GSM-PS
|  Modul   :  DL
+-----------------------------------------------------------------------------
|  Copyright 2002 Texas Instruments Berlin, AG
|                 All rights reserved.
|
|                 This file is confidential and a trade secret of Texas
|                 Instruments Berlin, AG
|                 The receipt of or possession of this file does not convey
|                 any rights to reproduce or disclose its contents or to
|                 manufacture, use, or sell anything it may describe, in
|                 whole, or in part, without the specific written consent of
|                 Texas Instruments Berlin, AG.
+-----------------------------------------------------------------------------
|  Purpose :  Definitions for the Protocol Stack Entity
|             Data Link Layer
+-----------------------------------------------------------------------------
*/

#ifndef __DL_H__
#define __DL_H__

#ifdef TI_PS_HCOMM_CHANGE
#include "cl_hComm_handle.h"
#endif

#if !defined(_SIMULATION_) && defined(WIN32)
#define _SIMULATION_
#endif  /* !_SIMULATION_ && WIN32 */

#if defined (_SIMULATION_)
#if defined(DL_2TO1)
#include <p_8010_148_l1test_sap.h>
#endif  /* DL_2TO1 */
#else /* _SIMULATION_ */
#if !defined(_TARGET_)
#define _TARGET_
#endif  /* !_TARGET_ */
#endif  /* _SIMULATION_ */

/*
 * the following defines have an impact on the behaviour of the layer 2
 */
/*
 * DL_TRACE_ENABLED
 * is set   : Enables the trace feature (buffered or immediately trace)
 * isīnt set: Disables the trace feature
 */
#define DL_TRACE_ENABLED

/*
 * DL_IMMEDIATE_TRACE
 * operates only with enabled trace feature!
 * is set   : Enables unbuffered trace. Write out the trace immediately without
 *            buffering (or rather delayed by signalling to itself while the MS
 *            is in interrupt context state).
 * isīnt set: Enables buffered trace (write out in idle mode only)
 * Attention: Due to the interrupt context of the uplink and downlink trace
              this feature requires very fast trace capability. The normal trace
              transfer rate of 115200 Baud is not sufficient!
 */
#define DL_IMMEDIATE_TRACE

/*
 * DISABLE_MEASREPORT_TRACE
 * operates only with enabled buffered trace!
 * is set   : Disables trace of measurement reports
 * isīnt set: Normal trace of measurement reports
#define DISABLE_MEASREPORT_TRACE
 */
/*
 * DISABLE_EMPTY_UI
 * operates only with enabled buffered trace!
 * is set   : Disables trace of empty frames
 * isīnt set: Normal trace of empty frames
 */
#define DISABLE_EMPTY_UI

/*
 * DELAYED_RELEASE_IND
 * is set   : Delayed release indication after reception of DISC to enable
 *            layer 1 the transmission of the UA acknowledge (After sent of the
 *            release indication to RR, RR stops the dedicated mode in layer 1).
 *            During the delay, DL sends only dummy frames for some uplink
 *            opportunities (see DL_FACCH_RELEASE_DELAY_VALUE and
 *            DL_SDCCH_RELEASE_DELAY_VALUE). The delay stops after the given
 *            count of uplinked dummy frames or at a downlink on this channel.
 * isīnt set: No delayed release indication
 */
#define DELAYED_RELEASE_IND

#if defined(DELAYED_RELEASE_IND)
/*
 * When RR stops the dedicated mode, the TI layer is not capable for correct
 * completion of the UA response transmission. Therefore DL delays the release
 * indication to RR for some uplink opportunities to give layer 1 time to
 * transmit the frame completely before RR stops the dedicated mode.
 */
#define DL_FACCH_RELEASE_DELAY_VALUE    4 /* number of wait dummies on FACCH */
#define DL_SDCCH_RELEASE_DELAY_VALUE    1 /* number of wait dummies on SDCCH */
#endif  /* DELAYED_RELEASE_IND */

/*
 * DELAYED_SABM
 * is set   : To give layer 1 some time to switch the physical channel on FACCH
 *            DL delays the transmit of the SABM frame. After (re-)establishment
 *            request from RR, DL sends only dummies (return NULL) for the first
 *            uplink opportunities (see DL_FACCH_SABM_DELAY_VALUE).
 * isīnt set: No delayed uplink of the SABM frame.
 */
#define DELAYED_SABM

#if defined(DELAYED_SABM)
#undef DELAYED_SABM
#endif  /* DELAYED_SABM */

#if defined(DELAYED_SABM)
/*
 * To give layer 1 some time to switch the physical channel on FACCH
 * DL delays the transmit of the SABM frame. After (re-)establishment request
 * from RR, DL sends only dummies (return NULL) for the first uplink
 * opportunities.
 */
#define DL_FACCH_SABM_DELAY_VALUE       1
#endif  /* DELAYED_SABM */

/*
 * LATE_LEAVING_DEDICATED
 * is set   : The leaving of dedicated mode happens in latest moment, after
 *            the reception of an UA frame after sent of DISC
 *            or before uplink of the UA frame after reception of a DISC frame.
 * isīnt set: In this case the dedicated mode is leaving immediately after
 *            the detection of a release (after the incoming L3 message
 *            CHANNEL RELEASE, or after reception of a DISC frame or before
 *            the uplink of a DISC frame).
 */
#define LATE_LEAVING_DEDICATED

/*
 * IFRAME_AS_RR
 * is set   : I frame might response with I frame
 * isīnt set: I frame must response with RR frame
 */
#define IFRAME_AS_RR

/*
 * INVOKE_SIGNAL
 * is set   : DL does not send primitives or traces within L1 interrupt context
 *            anymore. It sends signals instead. The primitives or traces are
 *            delayed until the entity will be in the own context.
 * isīnt set: Primitves or traces are processed immediately even is DL within
 *            in L1 interrupt context.
 */
#define INVOKE_SIGNAL

/*
 * SEND_FN_TO_L2_IN_DCCH
 * is set to 1: The function dll_dcch_downlink() contains one more parameter,
                the absolute frame number FN.
 * is set to 0: No changes relating to dll_dcch_downlink.
 */
#define SEND_FN_TO_L2_IN_DCCH 1

/*
 * RR_SHORT_PD_DETECT_KNOWN_MSG_ONLY
 * is set to 1: The Bter format is detected for known message types
 *              only (the known messages are defined some lines after in
 *              this header file).
 * is set to 0: The Bter format is detected on the basis of the short L2 header
 *              format. This is a more general approach, but with the
 *              disadvantage of possibly misconstrued invalid messages.
 */
//#define RR_SHORT_PD_DETECT_KNOWN_MSG_ONLY

/* 
 * DL_2TO1 flag is used to identify new L1 interface via the MPHC entity
 * as well as the test interface of the new 2to1 stack.
 */
#ifdef DL_2TO1
#define MAX_L2_FRAME_SIZE L1_MAX_L2_FRAME_SIZE
#define T_RADIO_FRAME T_L1_RADIO_FRAME
#define T_PH_DATA_IND T_MPHC_PH_DATA_IND
#define PH_DATA_IND MPHC_PH_DATA_IND
#define L2_CHANNEL_SDCCH L1_L2_CHANNEL_SDCCH
#define L2_CHANNEL_FACCH_F L1_L2_CHANNEL_FACCH_F
#define L2_CHANNEL_FACCH_H L1_L2_CHANNEL_FACCH_H
#define L2_CHANNEL_SACCH L1_L2_CHANNEL_SACCH
#define CM_SIGNALLING_ONLY MPHC_CM_SIGNALLING_ONLY
#define CM_TCH_FS MPHC_CM_TCH_FS
#define CM_TCH_HS MPHC_CM_TCH_HS
#define VALID_BLOCK L1_VALID_BLOCK
#define DATA_VALID MPHC_DATA_VALID
#define DL_SAPI_0 PS_SAPI_0
#define DL_SAPI_3 PS_SAPI_3
#define PH_READY_TO_SEND L1TEST_CALL_MPHC_READ_DCCH
#endif /*DL_2TO1*/

#if defined(_SIMULATION_)
#define  DL_TRACE_ENABLED           /* trace during simulation */
#define  DL_IMMEDIATE_TRACE         /* is write out immediately */
#undef   DISABLE_MEASREPORT_TRACE   /* enable trace of measurement reports */
#undef   DISABLE_EMPTY_UI           /* enable trace of empty frames */
#define  DL_TRACE_WIN32

#define TRACE_EVENT_WIN(s)                                TRACE_EVENT(s)
#define TRACE_EVENT_WIN_P1(s,a1)                          TRACE_EVENT_P1(s,a1)
#define TRACE_EVENT_WIN_P2(s,a1,a2)                       TRACE_EVENT_P2(s,a1,a2)
#define TRACE_EVENT_WIN_P3(s,a1,a2,a3)                    TRACE_EVENT_P3(s,a1,a2,a3)
#define TRACE_EVENT_WIN_P4(s,a1,a2,a3,a4)                 TRACE_EVENT_P4(s,a1,a2,a3,a4)
#define TRACE_EVENT_WIN_P5(s,a1,a2,a3,a4,a5)              TRACE_EVENT_P5(s,a1,a2,a3,a4,a5)
#define TRACE_EVENT_WIN_P6(s,a1,a2,a3,a4,a5,a6)           TRACE_EVENT_P6(s,a1,a2,a3,a4,a5,a6)
#if 0
#define TRACE_EVENT_WIN_P7(s,a1,a2,a3,a4,a5,a6,a7)        TRACE_EVENT_P7(s,a1,a2,a3,a4,a5,a6,a7)
#endif /* 0 */
#define TRACE_EVENT_WIN_P8(s,a1,a2,a3,a4,a5,a6,a7,a8)     TRACE_EVENT_P8(s,a1,a2,a3,a4,a5,a6,a7,a8)
#define TRACE_EVENT_WIN_P9(s,a1,a2,a3,a4,a5,a6,a7,a8,a9)  TRACE_EVENT_P9(s,a1,a2,a3,a4,a5,a6,a7,a8,a9)
#else  /* _SIMULATION_ */
#undef  DL_TRACE_WIN32

#define TRACE_EVENT_WIN(s)
#define TRACE_EVENT_WIN_P1(s,a1)
#define TRACE_EVENT_WIN_P2(s,a1,a2)
#define TRACE_EVENT_WIN_P3(s,a1,a2,a3)
#define TRACE_EVENT_WIN_P4(s,a1,a2,a3,a4)
#define TRACE_EVENT_WIN_P5(s,a1,a2,a3,a4,a5)
#define TRACE_EVENT_WIN_P6(s,a1,a2,a3,a4,a5,a6)
#define TRACE_EVENT_WIN_P7(s,a1,a2,a3,a4,a5,a6,a7)
#define TRACE_EVENT_WIN_P8(s,a1,a2,a3,a4,a5,a6,a7,a8)
#define TRACE_EVENT_WIN_P9(s,a1,a2,a3,a4,a5,a6,a7,a8,a9)
#endif  /* _SIMULATION_ */


/*==== CONSTANTS ==================================================*/
/*
 * Frame Header Macros
 */
#define GET_LENGTH_INDICATOR(s)   ((((s)[2]) & 0xFC)>>2)
#define GET_P_BIT(s)              ((((s)[1]) & 0x10)>>4)
#define GET_M_BIT(s)              ((((s)[2]) & 0x02)>>1)
#define GET_RECEIVE_NUMBER(s)     ((((s)[1]) & 0xE0)>>5)
#define GET_SEND_NUMBER(s)        ((((s)[1]) & 0x0E)>>1)
#define GET_SAPI(s)               ((((s)[0]) & 0x1C)>>2)
#define GET_EA(s)                 (((s)[0]) & 1)
#define GET_FORMAT_TYPE(s)        (((s)[1]) & 3)
#define GET_CR(s)                 ((((s)[0]) & 2)>>1)
#define GET_EL(s)                 (((s)[2]) & 1)
#define GET_S_TYPE(s)             (((s)[1]) & 0x0F)
#define GET_U_TYPE(s)             (((s)[1]) & 0xEF)
#define GET_BTER_FORMAT(s)        (((s)[0]) & (BTER_FORMAT_MASK))
#if 0
#define GET_LENGTH_FIELD(s)       (((s)[2]))
#define GET_PSEUDO_LENGTH(s)      ((((s)[0]) & 0xFC)>>2)
#endif /* 0 */



/* Boolean constants */
#if !defined(TRUE)
#define TRUE  (1 EQ 1)
#define FALSE (1 EQ 0)
#endif

#if !defined(ELEMENTS)
#define ELEMENTS(array) (sizeof(array)/sizeof(array[0]))
#endif  /* !ELEMENTS */

/*
 * Bitoffset for encoding/decoding
 */
#define ENCODE_OFFSET 24

/*
 * TI Circuit Switches Interface
 */
#define SIG_ONLY       0
#define NO_SIGNALLING  1

/*
 * Frame Sizes
 * Maximum number of octets for the information field for frames of
 * format A and B (SACCH, SDCCH, FACCH)
 */
#define N201_SDCCH     DL_N201_DCCH_A_B
#define N201_SACCH     DL_N201_SACCH_A_B
#define N201_FACCH     DL_N201_DCCH_A_B

/*
 * VTX commands
 */
#define EMPTY_CMD        0
#define RR_CMD           1
#define SABM_CMD         2
#define DISC_CMD         3
#define UA_CMD           4
#define DM_CMD           5
#define RR_RSP           6
#define REJ_CMD          7

/*
 * Format Types (Control field format: octet bits 2+1)
 */
#define I_FORMAT      0       /* information transfer format (only bit 1) */
#define I1_FORMAT     2       /* information transfer format (only bit 1) + N(S) */
#define S_FORMAT      1       /* supervisory format (bits 2+1) */
#define U_FORMAT      3       /* unnumbered format (bits 2+1) */

/*
 * Frame Types  (Control field format: octet bits 8-6,4-1)
 */
#define I_FRAME       0       /* I format (only bit 1) */
#define RR_FRAME      1       /* S format (bits 4-1) */
#define RNR_FRAME     5       /* S format (bits 4-1) */
#define REJ_FRAME     9       /* S format (bits 4-1) */
#define DISC_FRAME    0x43     /* U format (bits 8-6,4-1) */
#define SABM_FRAME    0x2F     /* U format (bits 8-6,4-1) */
#define UI_FRAME      0x03     /* U format (bits 8-6,4-1) */
#define DM_FRAME      0x0F     /* U format (bits 8-6,4-1) */
#define UA_FRAME      0x63     /* U format (bits 8-6,4-1) */

/*
 * L2 Header Values
 */
#define MS2BS_CMD    0
#define MS2BS_RSP    1
#if 0
#define BS2MS_CMD    1
#define BS2MS_RSP    0
#define ADDR_RESP_SAPI0  0x03
#define ADDR_RESP_SAPI3  0x0F
#define ADDR_CMD_SAPI0   0x01
#define ADDR_CMD_SAPI3   0x0D
#define UA_F0            0x63
#define UA_F1            0x73
#define RR_F0            0x01
#define RR_F1            0x11
#define RR_P0            0x01
#define RR_P1            0x11
#define REJ_F0           0x09
#define REJ_F1           0x19
#define DISC_P0          0x43
#define DISC_P1          0x53
#define SABM_P0          0x2F
#define SABM_P1          0x3F
#define DM_F0            0x0F
#define DM_F1            0x1F
#define UI_P0            0x03
#define I_P0             0x00
#define I_P1             0x10
#define LENGTH_ZERO      0x01
#endif /* 0 */

/*
 * Message types for RR messsages using the RR short PD
 *
 * up/downlink          message type   channel  name
 * BSS->MS downlink    | 0 0 0 0 0 | |  SACCH   System Information Type 10
 * BSS->MS downlink    | 0 0 0 0 1 | |  FACCH   Notification/FACCH
 * BSS->MS downlink    | 0 0 0 1 0 | |   DCCH   Uplink Free
 * MS->BSS uplink      | 0 0 1 0 0 | |  SACCH   Enhanced Measurement Report
 * BSS->MS downlink    | 0 0 1 0 1 | |  SACCH   Measurement Information
 *                     |           | |
 *                     0           | |          RR short PD
 *                                 0 0          Short L2 header type 1
 */

#define RR_SHORT_PD               0
#define L2_SHORT_HEAD             0
#if defined(RR_SHORT_PD_DETECT_KNOWN_MSG_ONLY) /* detection of known messages only */
#define RR_SHORT_PD_SI10          (((RR_SHORT_PD)<<7)|(0x00<<2)|(L2_SHORT_HEAD)) /* 0x00 */
#define RR_SHORT_PD_NOTI_FACCH    (((RR_SHORT_PD)<<7)|(0x01<<2)|(L2_SHORT_HEAD)) /* 0x04 */
#define RR_SHORT_PD_UPLINK_FREE   (((RR_SHORT_PD)<<7)|(0x02<<2)|(L2_SHORT_HEAD)) /* 0x08 */
#define RR_SHORT_PD_ENH_MEAS_REP  (((RR_SHORT_PD)<<7)|(0x04<<2)|(L2_SHORT_HEAD)) /* 0x10 */
#define RR_SHORT_PD_MEAS_INFO     (((RR_SHORT_PD)<<7)|(0x05<<2)|(L2_SHORT_HEAD)) /* 0x14 */
#endif /* RR_SHORT_PD_DETECT_KNOWN_MSG_ONLY */
/* general mask for Bter format */
#define NOT_RR_SHORT_PD           ((~RR_SHORT_PD)&0x01)
#define NOT_L2_SHORT_HEAD         ((~L2_SHORT_HEAD)&0x03)
#define BTER_FORMAT_MASK          (((NOT_RR_SHORT_PD)<<7)|(0x00<<2)|(NOT_L2_SHORT_HEAD)) /* 0x83 */
#define SHORT_L2_HEADER_TYPE_1    (((RR_SHORT_PD)<<7)|(0x00<<2)|(L2_SHORT_HEAD)) /* 0x00 */
/*
 * Repetitions
 */
#define FACCH_N200_FR     34
#define FACCH_N200_HR     29
#define SDCCH_N200        23
#define SACCH_N200         5
#define N200_ESTABLISHMENT 5

#ifndef DL_2TO1
  /* align DL.sap with 8010_152_PS_Include.sap */
  #define PS_SAPI_0                     DL_SAPI_0
  #define PS_SAPI_3                     DL_SAPI_3
  /* align DL.sap with 8010_153_Cause_Include.sap */
  #define CAUSE_DL_INFO_FIELD_MISMATCH  DL_INFO_FIELD_MISMATCH
#endif /* DL_2TO1 */

#define C_DCCH0             0 /* SAPI=0: SDCCH, FACCH */
#define C_DCCH3             1 /* SAPI=3: SDCCH, SACCH */
#define C_SACCH0            2 /* SAPI=0: SACCH  */
#define MAX_CHANNELS        3

#define PROCESS_NAME_INIT          \
        "DCCH0",                   \
        "DCCH3",                   \
        "SACCH0"

/*
 * States of all Processes
 */
#define STATE_INVALID                     0
#define STATE_DISABLED                    1
#define STATE_IDLE_DL                     2
#define STATE_SUSPENDED                   3
#define STATE_CONTENTION_RESOLUTION       4
#define STATE_AWAITING_ESTABLISHMENT      4
#define STATE_MULTIPLE_FRAME_ESTABLISHED  5
#define STATE_TIMER_RECOVERY              6
#define STATE_AWAITING_RELEASE            7
#define MAX_STATES                        8

/*
 * States of the Process DCCH0, (SAPI=0: SDCCH, FACCH)
 */
#define STATE_DCCH0_NAME_INIT         \
        "invalid"                     ,\
        "DISABLED"                    ,\
        "IDLE"                        ,\
        "SUSPENDED"                   ,\
        "CONTENTION_RESOLUTION"       ,\
        "MULTIPLE_FRAME_ESTABLISHED"  ,\
        "TIMER_RECOVERY"              ,\
        "AWAITING_RELEASE"
/*
 * States of the Process DCCH3 (SAPI=3: SDCCH, SACCH)
 */
#define STATE_DCCH3_NAME_INIT         \
        "invalid"                     ,\
        "DISABLED"                    ,\
        "IDLE"                        ,\
        "SUSPENDED"                   ,\
        "AWAITING_ESTABLISHMENT"      ,\
        "MULTIPLE_FRAME_ESTABLISHED"  ,\
        "TIMER_RECOVERY"              ,\
        "AWAITING_RELEASE"

/*
 * DL manages 3 (MAX_CHANNELS) states: SACCH0, DCCH0, DCCH3
 */
#ifdef OPTION_MULTITHREAD
  #define PROCESS_NAME    _ENTITY_PREFIXED(PROCESS_NAME)
#endif

/*
 * A definition is provided in DL_PEI.C
 */
#ifdef DL_PEI_C
  GLOBAL  const char * const STATE_DCCH0_NAME[MAX_STATES] = { STATE_DCCH0_NAME_INIT };
  GLOBAL  const char * const STATE_DCCH3_NAME[MAX_STATES] = { STATE_DCCH3_NAME_INIT };
  GLOBAL  const char * const PROCESS_NAME[MAX_CHANNELS] =   { PROCESS_NAME_INIT };

#if defined(DL_TRACE_WIN32)
  GLOBAL const char * const CH_TYPE_NAME[] =
  {
    "ch=0?",
    "SACCH",                   /* 0x1 SACCH                          */
    "SDCCH",                   /* 0x2 SDCCH                          */
    "FACCH_H",                 /* 0x3 FACCH Halfrate                 */
    "FACCH_F",                 /* 0x4 FACCH Fullrate                 */
    "CCCH",                    /* 0x5 CCCH                           */
    "NBCCH",                   /* 0x6 normal BCCH                    */
    "PCH",                     /* 0x7 PCH                            */
    "EPCH",                    /* 0x8 extended PCH                   */
    "CBCH",                    /* 0x9 Cell Broadcast Channel         */
    "EBCCH"                    /* 0xa extended BCCH                  */
  };
  GLOBAL const char * const VTX_NAME[] =
  {
    "EMPTY_CMD",        /* 0 */
    "RR_CMD",           /* 1 */
    "SABM_CMD",         /* 2 */
    "DISC_CMD",         /* 3 */
    "UA_CMD",           /* 4 */
    "DM_CMD",           /* 5 */
    "RR_RSP",           /* 6 */
    "REJ_CMD"           /* 7 */
  };
  GLOBAL const char * const SEND_NAME[] =
  {
    "RETURN_NULL",      /*  0 */
    "UPLINK_NULL",      /*  1 */
    "UPLINK_EMPTY",     /*  2 */
    "UPLINK_NORMAL",    /*  3 */
    "UPLINK_UA",        /*  4 */
    "UPLINK_UA_F",      /*  5 */
    "UPLINK_IFRAME",    /*  6 */
    "UPLINK_IFRAME_P",  /*  7 */
    "UPLINK_RR",        /*  8 */
    "UPLINK_RR_F",      /*  9 */
    "UPLINK_REJ",       /* 10 */
    "UPLINK_REJ_F",     /* 11 */
    "UPLINK_DCCH3",     /* 12 */
    "UPLINK_REPORT"     /* 13 */
  };
#endif  /* DL_TRACE_WIN32 */

#else   /* DL_PEI_C */
  EXTERN  const char * const STATE_DCCH0_NAME[MAX_STATES];
  EXTERN  const char * const STATE_DCCH3_NAME[MAX_STATES];
  EXTERN  const char * const PROCESS_NAME[MAX_CHANNELS];

#if defined(DL_TRACE_WIN32)
  EXTERN const char * const CH_TYPE_NAME[];
  EXTERN const char * const VTX_NAME[];
  EXTERN const char * const SEND_NAME[];
#endif  /* DL_TRACE_WIN32 */
#endif  /* DL_PEI_C */

/*
 * TRACE Constants
 */
#define TRACE_UPLINK    0
#define TRACE_DOWNLINK  1
#define TRACE_DL_EVENT  2
#define TRACE_CHSTATE   3
#define TRACE_PL_EVENT  4
#define TRACE_RR_EVENT  5
#define TRACE_UACK_UP   6
#define TRACE_UACK_DN   7

#define TRACE_CH_UNKNOWN  MAX_CHANNELS

/*
 * Error Causes
 */
#define T200_EXPIRED_N200_PLUS_1_TIMES        0
#define UNSOLICITED_UA_RESPONSE               2
#define UNSOLICITED_DM_RESPONSE               3
#define UNSOLICITED_DM_RESPONSE_ABNORMAL_REL  4
#define UNSOLICITED_SUPERVISORY_RESPONSE      5
#define SEQUENCE_ERROR                        6
#define U_FRAME_WITH_INCORRECT_PARAMETERS     7
#define S_FRAME_WITH_INCORRECT_PARAMETERS     8
#define I_FRAME_WITH_INCORRECT_USE_OF_M_BIT   9
#define I_FRAME_WITH_INCORRECT_LENGTH         10
#define FRAME_NOT_IMPLEMENTED                 11

/*
 * DL Uplink commands
 */
enum  uplink_enum
{
  RETURN_NULL = 0,
  UPLINK_NULL,
  UPLINK_EMPTY,
  UPLINK_NORMAL,
  UPLINK_UA,
  UPLINK_UA_F,
  UPLINK_IFRAME,
  UPLINK_IFRAME_P,
  UPLINK_RR,
  UPLINK_RR_F,
  UPLINK_REJ,
  UPLINK_REJ_F,
  UPLINK_DCCH3,
  UPLINK_REPORT
};

#if defined(__PEI_H__)  /* frame version 2.4.x */
typedef ULONG   T_SIGNAL_OPC;
#define FRAME_2_4_X
#elif defined(PEI_H)    /* frame version 2.3.x */
typedef USHORT  T_SIGNAL_OPC;
#define FRAME_2_3_X
#else                   /* frame version unknown */
#pragma error("unknown frame version, missing PEI_H or __PEI_H__")
#endif  /* frame version */


/*==== TYPES ======================================================*/
typedef struct
{
  USHORT l_buf;
  USHORT o_buf;
  UBYTE  buf [DL_MAX_L2_FRAME_SIZE];
} T_FRAME;

/* Buffer concept:
 * Store buffer    Contains complete layer 3 messages for the uplink direction
 * Sending buffer  Contains the complete message which is just send on uplink
 * Transmit buffer Contains the segment which is just send on uplink
 * Switch buffer   Contains a layer 3 message in case of resumption or reconnection
 */
#define INDEX_MAX_STORE_BUFFER  (MAX_QUEUED_MESSAGES-1)
#define INDEX_SENDING_BUFFER    MAX_QUEUED_MESSAGES
#define INDEX_SWITCH_BUFFER     (MAX_QUEUED_MESSAGES+1)
typedef struct
{
  USHORT   no_of_stored_messages;
  T_DL_DATA_REQ * store_buffer [MAX_QUEUED_MESSAGES];
  T_DL_DATA_REQ * sending_buffer;
  T_DL_DATA_REQ * switch_buffer;
  USHORT   act_length;
  USHORT   act_offset;
  T_FRAME  transmit_buffer;
  UBYTE    m_bit;
} T_QUEUE;

typedef struct
{
  UBYTE       ch_type;
  UBYTE       vtx;
  UBYTE       T200_counter;
  UBYTE       time_flag;
  UBYTE       contention_resolution;
  UBYTE       reject_exception;
  UBYTE       acknowledge_pending;
  UBYTE       rc;
  UBYTE       f_bit;
  UBYTE       f_bit_flag;
  UBYTE       p_bit_flag;
  UBYTE       va;
  UBYTE       vr;
  UBYTE       vs;
} T_CCH;

#if defined(INVOKE_SIGNAL)
typedef struct
{
  UBYTE   ch_type;
  UBYTE   sapi;
  UBYTE   indication;
} T_DL_SIG_ESTABLISH_IND;

typedef struct
{
  UBYTE   ch_type;
  UBYTE   sapi;
} T_DL_SIG_ESTABLISH_CNF;

typedef struct
{
  UBYTE   ch_type;
  UBYTE   sapi;
  ULONG   fn;
} T_DL_SIG_DATA_IND;

typedef struct
{
  UBYTE   sapi;
} T_DL_SIG_DATA_CNF;

#if 0 /* happens in primitive context only */
typedef struct
{
  UBYTE   error_flag;
  UBYTE   layer1head[2];
  UBYTE   layer3msg[DL_N201_SACCH_A_B];
  UBYTE   length;
  ULONG   fn;
} T_DL_SIG_UNITDATA_IND;
#endif  /* 0 */

typedef struct
{
  UBYTE   ch_type;
  UBYTE   error_flag;
  UBYTE   layer1head[2];
  UBYTE   layer3msg[DL_N201_DCCH_Bter];
  UBYTE   length;
  ULONG   fn;
} T_DL_SIG_SHORT_UNITDATA_IND;

typedef struct
{
  UBYTE   ch_type;
  UBYTE   sapi;
  UBYTE   cs;
  BOOL    init;
} T_DL_SIG_RELEASE_IND;

typedef struct
{
  UBYTE   ch_type;
  UBYTE   sapi;
  BOOL    init;
} T_DL_SIG_RELEASE_CNF;

typedef struct
{
  UBYTE   ch_type;
  UBYTE   sapi;
} T_DL_SIG_ERROR_IND;

typedef struct
{
  void    *pointer;
} T_DL_SIG_FREE_POINTER;

typedef struct
{
  T_DL_DATA_IND ** in_msg;
  UBYTE   new_data_in[MAX_L2_FRAME_SIZE];
} T_DL_SIG_CONCATENATE;

typedef struct
{
  UBYTE   trace_type;
  UBYTE   channel;
  UBYTE   ch_type;
  UBYTE   data_len;
  T_TIME  trace_time;
  UBYTE   data[MAX_L2_FRAME_SIZE];
} T_DL_SIG_L2TRACE;

typedef struct
{
  UBYTE    type;
  UBYTE    ch_type;
  UBYTE   *frame;
} T_DL_SIG_L3TRACE;

typedef struct
{
  UBYTE   data[7 /*EM_DL_BUFFER_SIZE*/];
  UBYTE   length;
} T_DL_SIG_EM_WRITE;


typedef union
{
  T_DL_SIG_ESTABLISH_IND             establish_ind;
  T_DL_SIG_ESTABLISH_CNF             establish_cnf;
  T_DL_SIG_DATA_IND                  data_ind;
  T_DL_SIG_DATA_CNF                  data_cnf;
#if 0 /* happens in primitive context only */
  T_DL_SIG_UNITDATA_IND              unitdata_ind;
#endif  /* 0 */
  T_DL_SIG_SHORT_UNITDATA_IND        short_unitdata_ind;
  T_DL_SIG_RELEASE_IND               release_ind;
  T_DL_SIG_RELEASE_CNF               release_cnf;
  T_DL_SIG_ERROR_IND                 error_ind;
  T_DL_SIG_FREE_POINTER              free_pointer;
  T_DL_SIG_CONCATENATE               concatenate;
  T_DL_SIG_L3TRACE                   l3trace;
#if defined(DL_TRACE_ENABLED) && defined(DL_IMMEDIATE_TRACE)
  T_DL_SIG_L2TRACE                   l2trace;
#endif  /* DL_TRACE_ENABLED && DL_IMMEDIATE_TRACE */
#if defined(FF_EM_MODE)
  T_DL_SIG_EM_WRITE                  em_write;
#endif  /* FF_EM_MODE */
} T_DL_SIGNAL_DATA_UNION;

typedef struct
{
  BOOL                               busy;
#if defined(_SIMULATION_)
  UBYTE                              idx;
#endif  /* _SIMULATION_ */
  T_DL_SIGNAL_DATA_UNION             u;
} T_DL_SIGNAL_DATA;

#if defined(DL_TRACE_ENABLED)
    #define DL_SIGNAL_DATA_ELEMENTS 9
#else /* DL_TRACE_ENABLED */
    #define DL_SIGNAL_DATA_ELEMENTS 6
#endif /* DL_TRACE_ENABLED */

/*
 * number of signal data entries must be sufficient for
 * 1 data indication or confirmation
 * 1 error indication
 * 1-2 free commands
 * 1-2 engineering command
 * 2-3 traces
 */
typedef struct
{
  int               sig_idx;
  T_DL_SIGNAL_DATA  sig_data[DL_SIGNAL_DATA_ELEMENTS];
} T_DL_SIGNAL;
#endif /* INVOKE_SIGNAL */

typedef struct
{
  BOOL                  dl_active;
  BOOL                  interrupt_context;
  UBYTE                 state[MAX_CHANNELS];
  T_CCH                 cch[MAX_CHANNELS];
  T_FRAME               sacch_act_buffer;
  T_FRAME               sacch_last_buffer;
  T_FRAME               rr_short_pd_buffer;
  UBYTE                 rr_short_pd_ch_type;
  UBYTE                 sacch_mode;
  T_DL_DATA_IND       * dcch0_in_msg;
  T_DL_DATA_IND       * dcch3_in_msg;
  T_QUEUE               dcch0_queue;
  T_QUEUE               dcch3_queue;
  BOOL                  dcch0_unserved; /* storing of indication (unserved DL-DATA_REQīs) */
  BOOL                  dcch3_unserved; /* for use with DL-ESTABLISHMENT-CNF */
  T_RADIO_FRAME         l2_frame;/* Buffer for l2_frame and empty l2 frame */
  BOOL                  RR_dedicated;/* Flag for RR dedictated mode
                                      * (necessary for measurement reports) */
  ULONG                 fn; /* last received frame number */
  UBYTE                 dcch0_ch_type;
  UBYTE                 dcch0_disc_request;/* Flags for faster sending of DISC */
  UBYTE                 dcch3_disc_request;/* after L3 msg CAHNNEL RELEASE */

  /*
   * Flag for priority arrangement on the SACCH channel.
   * DL must ensure that if a SAPI=3 frame is awaiting transmission, two SAPI=3
   * frames are not sent in consecutive SACCH frames.
   * Dl must also be ensured that any SAPI=3 frame is followed by at least one
   * SAPI=0 frame.
   * This flag controls the priority of SMS messages and measurement reports.
   */
  UBYTE                 sacch_last_uplink_sapi;
#if !defined(FF_GTI)
#if defined(DELAYED_SABM)
  UBYTE                 dcch0_sabm_flag;
  UBYTE                 dcch0_sabm_delay;
#endif  /* DELAYED_SABM */
#if defined(DELAYED_RELEASE_IND)
  UBYTE                 release_ind_ch_type;
  UBYTE                 release_ind_sapi;
  UBYTE                 release_ind_delay;
#endif  /* DELAYED_RELEASE_IND */
#endif  /* !FF_GTI */
#if defined(INVOKE_SIGNAL)
  T_DL_SIGNAL           signal_struct;
#endif /* INVOKE_SIGNAL */

} T_DL_DATA_STORE;

/*
 * Predefined mesaurement reports
 *
 * If all entities are linked into one module this definitions
 * prefixes all this functions with the enity name
 */
#ifdef OPTION_MULTITHREAD
#define meas_report_no_nc _ENTITY_PREFIXED(meas_report_no_nc)
#endif
EXTERN const T_FRAME    meas_report_no_nc;

/*==== EXPORT =====================================================*/
#if defined(WIN32)
#include <stdio.h>
#endif  /* WIN32 */

/*
 * Prototypes Distribute RR
 */
EXTERN void drr_dl_establish_req       (T_DL_ESTABLISH_REQ     * est_req);
EXTERN void drr_dl_establish_ind       (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                    indication);
EXTERN void drr_dl_resume_req          (T_DL_RESUME_REQ        * resume_req);
EXTERN void drr_dl_reconnect_req       (T_DL_RECONNECT_REQ     * reconnect_req);
EXTERN void drr_dl_release_req         (T_DL_RELEASE_REQ       * release_req);
#ifndef DL_2TO1
EXTERN void drr_mdl_release_req        (T_MDL_RELEASE_REQ      * release_req);
#endif /* DL_2TO1 */
EXTERN void drr_dl_suspend_req         (T_DL_SUSPEND_REQ       * suspend_req);
EXTERN void drr_dl_data_req            (T_DL_DATA_REQ          * data_req);
EXTERN void drr_dl_data_ind            (UBYTE                    sapi,
                                        ULONG                    fn);
EXTERN void drr_dl_data_cnf            (UBYTE                    sapi);
EXTERN void drr_dl_unitdata_req        (T_DL_UNITDATA_REQ      * unitdata_req);
EXTERN void drr_dl_unitdata_ind        (UBYTE                    error_flag,
                                        UBYTE                  * layer1head,
                                        UBYTE                  * layer3msg,
                                        UBYTE                    length,
                                        ULONG                    fn);
EXTERN void drr_dl_short_unitdata_req  (T_DL_SHORT_UNITDATA_REQ * short_unitdata_req);
EXTERN void drr_dl_short_unitdata_ind  (UBYTE                    ch_type,
                                        UBYTE                    error_flag,
                                        UBYTE                  * layer1head,
                                        UBYTE                  * layer3msg,
                                        UBYTE                    length,
                                        ULONG                    fn);
EXTERN void drr_dl_establish_cnf       (UBYTE                    ch_type,
                                        UBYTE                    sapi);
EXTERN void drr_dl_release_ind         (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                    cs,
                                        BOOL                     init);
EXTERN void drr_dl_release_cnf         (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        BOOL                     init);
EXTERN void drr_error_ind              (UBYTE                    ch_type,
                                        UBYTE                    sapi);

/*
 * Prototypes Slow Associated Control Channel
 */
EXTERN void sacch0_init_dl_data        (void);
EXTERN void sacch0_reset_meas          (void);
EXTERN void sacch0_send_data           (void);
/*
 * Prototypes Slow Dedicated Control Channel (SAPI 0)
 */
EXTERN void dcch0_init_dl_data         (void);
EXTERN void dcch0_delay_sabm           (T_CCH                  * pcch);
EXTERN void dcch0_establish_req        (T_DL_ESTABLISH_REQ     * est_req);
EXTERN void dcch0_resume_req           (T_DL_RESUME_REQ        * resume_req);
EXTERN void dcch0_reconnect_req        (T_DL_RECONNECT_REQ     * reconnect_req);
EXTERN BOOL dcch0_release_req          (T_DL_RELEASE_REQ       * dl_release_req);
EXTERN void dcch0_mdl_release_req      (void);
EXTERN void dcch0_suspend_req          (T_DL_SUSPEND_REQ       * suspend_req);
EXTERN void dcch0_data_req             (T_DL_DATA_REQ          * data_req);
EXTERN int  dcch0_check_disc           (int                      send);

/*
 * Prototypes Slow Dedicated Control Channel (SAPI 3)
 */
EXTERN void dcch3_init_dl_data         (void);
EXTERN void dcch3_enable               (UBYTE                    ch_type);
EXTERN void dcch3_establish_req        (T_DL_ESTABLISH_REQ     * est_req);
EXTERN BOOL dcch3_release_req          (T_DL_RELEASE_REQ       * dl_release_req);
EXTERN void dcch3_mdl_release_req      (void);
EXTERN void dcch3_data_req             (T_DL_DATA_REQ          * data_req);
EXTERN int  dcch3_check_disc           (int                      send);

#if defined(INVOKE_SIGNAL)
EXTERN void sig_init_signal_data       (void);
EXTERN void sig_invoke_drr_dl_establish_ind (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                    indication);
EXTERN void sig_invoke_drr_dl_data_cnf (UBYTE                    sapi);
#if 0 /* happens in primitive context only */
EXTERN void sig_invoke_drr_dl_unitdata_ind  (UBYTE                    error_flag,
                                        UBYTE                  * layer1head,
                                        UBYTE                  * layer3msg,
                                        UBYTE                    length,
                                        ULONG                    fn);
#endif  /* 0 */
EXTERN void sig_invoke_drr_dl_short_unitdata_ind (UBYTE                    ch_type,
                                        UBYTE                    error_flag,
                                        UBYTE                  * layer1head,
                                        UBYTE                  * layer3msg,
                                        UBYTE                    length,
                                        ULONG                    fn);
EXTERN void sig_invoke_drr_dl_establish_cnf (UBYTE                    ch_type,
                                        UBYTE                    sapi);
EXTERN void sig_invoke_drr_dl_release_ind   (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                    cs,
                                        BOOL                     init);
EXTERN void sig_invoke_drr_dl_release_cnf   (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        BOOL                     init);
EXTERN void sig_invoke_drr_error_ind   (UBYTE                    ch_type,
                                        UBYTE                    sapi);
EXTERN void sig_invoke_com_free_pointer (void                  * pointer);
EXTERN void sig_invoke_com_concatenate (T_DL_DATA_IND         ** in_msg,
                                        UBYTE                  * new_data_in);
EXTERN void sig_invoke_com_data_ind    (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        ULONG                    fn);
EXTERN void sig_invoke_com_l3trace     (UBYTE                    type,
                                        UBYTE                    ch_type,
                                        UBYTE                  * frame);
#if defined(DL_TRACE_ENABLED) && defined(DL_IMMEDIATE_TRACE)
EXTERN void sig_invoke_com_l2trace     (UBYTE                    trace_type,
                                        UBYTE                    channel,
                                        UBYTE                    ch_type,
                                        T_TIME                   trace_time,
                                        UBYTE                  * data);
#endif  /* DL_TRACE_ENABLED && DL_IMMEDIATE_TRACE */
#if defined(FF_EM_MODE)
EXTERN void sig_invoke_dl_em_write     (UBYTE                    length,
                                        UBYTE                  * data);
EXTERN void sig_invoke_dl_em_first_event_check (void);
#endif  /* FF_EM_MODE */

EXTERN void sig_handle_drr_dl_establish_ind (T_DL_SIGNAL_DATA       * signal);
EXTERN void sig_handle_drr_dl_data_cnf      (T_DL_SIGNAL_DATA       * signal);

EXTERN void sig_handle_drr_dl_short_unitdata_ind (T_DL_SIGNAL_DATA       * signal);
EXTERN void sig_handle_drr_dl_establish_cnf (T_DL_SIGNAL_DATA       * signal);
EXTERN void sig_handle_drr_dl_release_ind   (T_DL_SIGNAL_DATA       * signal);
EXTERN void sig_handle_drr_dl_release_cnf   (T_DL_SIGNAL_DATA       * signal);
EXTERN void sig_handle_drr_error_ind        (T_DL_SIGNAL_DATA       * signal);
EXTERN void sig_handle_com_free_pointer     (T_DL_SIGNAL_DATA       * signal);
EXTERN void sig_handle_com_concatenate      (T_DL_SIGNAL_DATA       * signal);
EXTERN void sig_handle_com_free_pointer     (T_DL_SIGNAL_DATA       * signal);
EXTERN void sig_handle_com_data_ind         (T_DL_SIGNAL_DATA       * signal);
EXTERN void sig_handle_com_l3trace          (T_DL_SIGNAL_DATA       * signal);
#if defined(DL_TRACE_ENABLED) && defined(DL_IMMEDIATE_TRACE)
EXTERN void sig_handle_com_l2trace          (T_DL_SIGNAL_DATA       * signal);
#endif  /* DL_TRACE_ENABLED && DL_IMMEDIATE_TRACE */
#if defined(FF_EM_MODE)
EXTERN UBYTE em_dl_write                    (UBYTE                    length,
                                             UBYTE                  * data);
EXTERN void sig_handle_dl_em_write          (T_DL_DATA_STORE        * dl_data,
                                             T_DL_SIGNAL_DATA       * signal);
EXTERN void dl_em_first_event_check(void);/*for ACI notification of first EM event*/
EXTERN void sig_handle_dl_em_first_event_check (void);
#endif  /* FF_EM_MODE */
#endif  /* INVOKE_SIGNAL */

/*
 * Prototypes Distribute PL
 */

#ifdef _SIMULATION_
#ifdef DL_2TO1
EXTERN void l1test_call_mphc_read_dcch (T_L1TEST_CALL_MPHC_READ_DCCH * ready);
EXTERN void l1test_return_mphc_read_dcch (T_RADIO_FRAME * frame);
EXTERN void l1test_call_mphc_read_sacch (T_L1TEST_CALL_MPHC_READ_SACCH * ready);
EXTERN void l1test_return_mphc_read_sacch (T_RADIO_FRAME* frame);
EXTERN void l1test_call_mphc_dcch_downlink (T_L1TEST_CALL_MPHC_DCCH_DOWNLINK * data_ind);
EXTERN void l1test_return_mphc_dcch_downlink (T_L1TEST_RETURN_MPHC_DCCH_DOWNLINK * resp);
#else /* DL_2TO1 */
EXTERN void dph_ph_ready_to_send (T_PH_READY_TO_SEND * ready);
#endif /* DL_2TO1 */
#endif /* _SIMULATION_ */

/* SACCH Uplink Interface according to L1M_GS011-1 v.1.22, section 23. */
EXTERN T_RADIO_FRAME *dll_read_sacch (U8 chn_mode);

/* SACCH Downlink Interface according to L1M_GS011-1 v.1.22, section 24. */
/* SACCH (SDCCH/FACCH only simulation) Downlink Test Interface  */
EXTERN void dph_ph_data_ind (T_PH_DATA_IND * data_ind);

#if defined(DL_2TO1) || defined(USE_L1M_GS001_1)
/* DCCH Uplink Interface according to L1M_GS001-1, section 25. */
EXTERN T_RADIO_FRAME * dll_read_dcch (U8 chn_mode, U8 channel_type);

/* DCCH Downlink Interface according to L1M_GS001-1, section 26. */
EXTERN void dll_dcch_downlink (U32 * data_ptr, U8 valid_flag, U8 channel_type, U32 fn);

#else  /* DL_2TO1 || USE_L1M_GS001_1 */
/* DCCH Uplink Interface according to L1M_GS001-1 v.1.22, section 25. */
EXTERN T_RADIO_FRAME * dll_read_dcch (U8 chn_mode);

/* DCCH Downlink Interface according to L1M_GS001-1 v.1.22, section 26. */
#if defined(SEND_FN_TO_L2_IN_DCCH) && (SEND_FN_TO_L2_IN_DCCH == 1)
  EXTERN void dll_dcch_downlink (U32 * data_ptr, U8 valid_flag, U32 fn);
#else /* SEND_FN_TO_L2_IN_DCCH == 1 */
  EXTERN void dll_dcch_downlink (U32 * data_ptr, U8 valid_flag);
#endif /* SEND_FN_TO_L2_IN_DCCH == 1 */
#endif  /* DL_2TO1 || USE_L1M_GS001_1 */

/* SACCH/SDCCH/FACCH Uplink Interface  */
EXTERN T_RADIO_FRAME *dl1_uplink_ind   (UBYTE                    channel_type,
                                        UBYTE                    no_signalling_flag);

/*
* Prototypes Downlink and Uplink Functions (DL_STATE.c)
*/
EXTERN int dl_downlink                 (UBYTE                    error_flag,
                                        UBYTE                    channel_type,
                                        UBYTE                  * frame,
                                        ULONG                    fn);
EXTERN void set_channel_state          (UBYTE                    channel,
                                        UBYTE                    state);
EXTERN T_RADIO_FRAME* dl_uplink        (UBYTE                    channel,
                                        UBYTE                    sapi,
                                        UBYTE                    no_signalling_mode,
                                        BOOL                     recursiv);

EXTERN int uplink_awaiting_release     (UBYTE                    channel,
                                        UBYTE                    sapi);
/*
* Prototypes Common Functions
*/
EXTERN void com_free_pointer           (void                   * pointer);
EXTERN void com_free_queue_buffer      (T_QUEUE                * queue,
                                        USHORT                   index);
EXTERN void com_clear_queue            (UBYTE                    sapi);
EXTERN void com_restore_queue          (UBYTE                    sapi,
                                        T_DL_DATA_REQ          * est_req);
EXTERN void com_recover_queue          (UBYTE                    sapi);
EXTERN void com_store_queue            (UBYTE                    sapi,
                                        T_DL_DATA_REQ          * data_req);
EXTERN void com_read_queue             (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                  * m_bit);
EXTERN BOOL com_queue_awaiting_transmission   (UBYTE                    sapi);
EXTERN void com_leave_dedicated        (UBYTE                    ch_type);
EXTERN void possible_reset_dcch0_ch_type    (void);
EXTERN void com_concatenate            (T_DL_DATA_IND         ** in_msg,
                                        UBYTE                  * new_data_in);
EXTERN UBYTE com_check_nr              (UBYTE                    va,
                                        UBYTE                    vs,
                                        UBYTE                    nr);
EXTERN void com_prepare_DISC           (UBYTE                    channel,
                                        UBYTE                    sapi);
EXTERN void com_build_UA_response      (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                    f_bit);
EXTERN void com_build_RR_response      (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                    nr,
                                        UBYTE                    f_bit);
EXTERN void com_build_REJ_response     (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                    nr,
                                        UBYTE                    f_bit);
EXTERN void com_build_DISC_command     (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                    p_bit);
EXTERN void com_build_SABM             (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        BOOL                     contention_resultion);
EXTERN void com_build_DM_response      (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                    f_bit);
EXTERN void com_build_I_command        (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                    ns,
                                        UBYTE                    nr,
                                        UBYTE                    p_bit,
                                        UBYTE                    m_bit,
                                        T_QUEUE                * queue);
EXTERN void com_build_UI_command       (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        const T_FRAME          * buffer);
EXTERN void com_build_UI_Bter          (UBYTE                    ch_type);
EXTERN UBYTE com_compare_L3_msg        (T_DL_DATA_REQ          * data_ind1,
                                        UBYTE                  * data_ind2);
GLOBAL void com_data_ind               (UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        ULONG                    fn);
EXTERN void com_l2trace                (UBYTE                    trace_type,
                                        UBYTE                    channel,
                                        UBYTE                    ch_type,
                                        T_TIME                   event_time,
                                        UBYTE                  * data);
EXTERN void com_l3trace                (UBYTE                    type,
                                        UBYTE                    ch_type,
                                        UBYTE                  * frame);
EXTERN void com_print_l3trace          (UBYTE                    type,
                                        UBYTE                    ch_type,
                                        UBYTE                    sapi,
                                        UBYTE                  * l3msg);
EXTERN void com_init_data              (void);


EXTERN CHAR* dl_version                (void);
EXTERN T_DL_DATA_STORE *dl_get_data    (void);

#if defined (DL_TRACE_ENABLED)
EXTERN void dl_trace                   (UCHAR                    trace_type,
                                        UCHAR                    channel,
                                        UCHAR                    ch_type,
                                        UCHAR                  * data);
#if defined(DL_IMMEDIATE_TRACE)

EXTERN void dl_fast_trace              (UBYTE                    trace_type,
                                        UBYTE                    channel,
                                        UBYTE                    ch_type,
                                        T_TIME                   trace_time,
                                        ULONG                    trace_mask,
                                        UBYTE                  * data);
#else  /* DL_IMMEDIATE_TRACE */
EXTERN void dl_trace_init              (void);
EXTERN void dl_trace_exit              (void);
EXTERN void dl_trace_read              (void);
EXTERN void dl_trace_read_all          (void);
EXTERN void dl_trace_clear             (void);
#endif  /* DL_IMMEDIATE_TRACE */
#endif  /* DL_TRACE_ENABLED */

/*
 * Prototypes Customer Specific Functions
 */


EXTERN USHORT dl_handle;

#define ENTITY_DATA                dl_data


#if defined (DL_PEI_C)
GLOBAL T_DL_DATA_STORE dl_data_base;
#else
EXTERN T_DL_DATA_STORE dl_data_base;
#endif  /* DL_PEI_C */

#define GET_INSTANCE_DATA     register T_DL_DATA_STORE *dl_data= &dl_data_base



/*
 * If all entities are linked into one module this definitions
 * prefixes the global data with the enity name
 */
#ifdef TI_PS_HCOMM_CHANGE
#define hCommDL _hCommDL
#else /* for hCommHandles backward compatibility */
#ifdef OPTION_MULTITHREAD
  #define hCommDL       _ENTITY_PREFIXED(hCommDL)
  #define hCommRR       _ENTITY_PREFIXED(hCommRR)
  #define hCommPL       _ENTITY_PREFIXED(hCommPL)
#endif

EXTERN T_HANDLE  hCommDL;                /* Self  Communication        */
EXTERN T_HANDLE  hCommRR;                /* RR  Communication        */
EXTERN T_HANDLE  hCommPL;                /* PL  Communication        */
#endif

#define SYST_TRACE(a) vsi_o_ttrace(0, 0xFFFF,a)
#define SYST           0, 0xffff
#ifdef TI_PS_HCOMM_CHANGE
#define DLTRC          _hCommDL, 0x0200
#else /* for hCommHandles backward compatibility */
#define DLTRC          hCommDL, 0x0200
#endif
#define SYST_TRACE_P(a) vsi_o_ttrace a


#if defined(DL_TRACE_ENABLED)
#if defined(DL_IMMEDIATE_TRACE)
#define DL_OFFLINE_TRACE(type, ch, ch_type, data)  \
        com_l2trace (type, (U8) (ch),(U8)(ch_type), 0, (UBYTE *)(data))
#else /* DL_IMMEDIATE_TRACE */
#define DL_OFFLINE_TRACE(type, ch, ch_type, data)  \
        dl_trace ((UCHAR)(type), (UCHAR)(ch), (UCHAR)(ch_type), (UCHAR *)(data))
#endif /* DL_IMMEDIATE_TRACE */
#else
#define DL_OFFLINE_TRACE(type, ch, ch_type, data)  /* do nothing */
#endif  /* DL_TRACE_ENABLED */

#if !defined(_FILE10_)
#define __FILE10__  (__FILE__+strlen(__FILE__)-11)
#endif  /* !_FILE10_ */

#if defined(DL_TRACE_ENABLED) || defined(FF_EM_MODE)
EXTERN void com_semaphore_err (void);
GLOBAL int com_enter_critical_section (T_HANDLE sem);
GLOBAL int com_leave_critical_section (T_HANDLE sem);
#define  ENTER_CRITICAL_SECTION(sem)  if (com_enter_critical_section(sem))return
#define  LEAVE_CRITICAL_SECTION(sem)  if (com_leave_critical_section(sem))return
#if !defined(DL_IMMEDIATE_TRACE)
GLOBAL int com_semaphore_state (T_HANDLE sem);
#define  TEST_SEMAPHORE(sem)          if (com_semaphore_state(sem)) return
#endif /* !DL_IMMEDIATE_TRACE */
#endif  /* DL_TRACE_ENABLED || FF_EM_MODE */


#if defined (DL_TRACE_ENABLED) && defined(DL_TRACE_PFREE)
#define MY_PFREE(p)   p = my_pfree (p, __LINE__, __FILE10__)
void* my_pfree(void *pointer, int line, char *file);
#else
#define MY_PFREE(p)   PFREE(p)
#endif  /* DL_TRACE_ENABLED */


#if defined(_SIMULATION_)
#define COM_FREE_QUEUE_BUFFER(q,i) \
  {TRACE_EVENT_WIN_P4 ("FREE_QUEUE_BUFFER:q=%p i=%u (%s#%u)",q,i,__FILE10__, __LINE__);\
   com_free_queue_buffer(q, i);}
#define COM_FREE_POINTER(p) \
  {TRACE_EVENT_WIN_P4 ("call com_free_pointer(,%s=%08x) (%s#%u)", #p, p, __FILE10__, __LINE__);\
    com_free_pointer ( p);}
#else /* _SIMULATION_ */
#define COM_FREE_QUEUE_BUFFER(q,i) com_free_queue_buffer(q,i)
#define COM_FREE_POINTER(p) com_free_pointer ( p)
#endif /* _SIMULATION_ */


#if 0
#define ARRAY_TRACE
#if defined(ARRAY_TRACE)
EXTERN void  rr_array_trace (UBYTE*array, int size, char *titel);
#define TRACE_ARRAY(array, size, titel) rr_array_trace(array, size, titel)
#else  /* ARRAY_TRACE */
#define TRACE_ARRAY(array, size, titel)
#endif  /* ARRAY_TRACE */
#endif /* 0 */

#endif /* !__DL_H__ */