293 lines
14 KiB
C
293 lines
14 KiB
C
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#pragma option push -b -a8 -pc -A- /*P_O_Push*/
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/* Copyright Data Connection Ltd. 1989 */
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/*****************************************************************************/
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/* Link Device Driver interface constants and structures. */
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/*****************************************************************************/
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/*****************************************************************************/
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/* WIN32 16/04/92 SW Added more helpful names from WIN32 hdr file */
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/* IHV 03/06/92 MF2 Add semfisui.h */
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/* CDDD1 06/04/93 CD Change TxFrame DevIoctl code */
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/* STAT1 21/01/94 CD Fix what we do with stats (& general cleanup) */
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/* MODEM 06/04/95 AB Add support for the modem status program */
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/*****************************************************************************/
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/*****************************************************************************/
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/* This include file is used in 3 components */
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/* */
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/* - the NT driver LINK_NTDRIVER */
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/* - the X25 link service for NT LINK_NTX25 */
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/* - the SDLC link service for NT LINK_NTSDLC */
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/* */
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/* These are distinguished based on #defines as set in the following */
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/* */
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/*****************************************************************************/
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#ifdef IMADRIVER
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#define LINK_NTDRIVER
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#else
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#ifdef SDLC
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#define LINK_NTSDLC
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#else
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#define LINK_NTX25
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#endif
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#endif
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/*****************************************************************************/
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/* Device function codes for DosDevIOCtl to link device driver */
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/*****************************************************************************/
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#define IoctlCodeSetEvent 0x410
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#define IoctlCodeSetLinkChar 0x420
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#define IoctlCodeSetV24 0x430
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#define IoctlCodeTxFrame 0x441 /* Main Tx so 1 CDDD1*/
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#define IoctlCodeAbortTransmit 0x450
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#define IoctlCodeAbortReceiver 0x460
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#define IoctlCodeSetInterfaceRecord 0x610 /* Retired */
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#define IoctlCodeGetV24 0x623 /* No data buffer so 3 */
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#define IoctlCodeRxFrame 0x632 /* Main Rx so 2 */
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#define IoctlCodeReadInterfaceRecord 0x642
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/*****************************************************************************/
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/* Constants for the driver-specific IOCtl return codes. */
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/*****************************************************************************/
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#define CEDNODMA 0xff80 /* Warning (NO DMA!) from set link chrctrstcs */
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/*****************************************************************************/
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/* Equates for the link options byte 1. */
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/*****************************************************************************/
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#define CEL4WIRE 0x80
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#define CELNRZI 0x40
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#define CELPDPLX 0x20
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#define CELSDPLX 0x10
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#define CELCLOCK 0x08
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#define CELDSRS 0x04
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#define CELSTNBY 0x02
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#define CELDMA 0x01
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/*****************************************************************************/
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/* Equates for the driver set link characteristics byte 1. */
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/*****************************************************************************/
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#define CED4WIRE 0x80
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#define CEDNRZI 0x40
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#define CEDHDLC 0x20
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#define CEDFDPLX 0x10
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#define CEDCLOCK 0x08
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#define CEDDMA 0x04
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#define CEDRSTAT 0x02
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#define CEDCSTAT 0x01
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/* Nicer names for NT-style code */
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#define LinkOption_4Wire CED4WIRE
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#define LinkOption_NRZI CEDNRZI
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#define LinkOption_HDLC CEDHDLC
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#define LinkOption_FullDuplex CEDFDPLX
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#define LinkOption_InternalClock CEDCLOCK
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#define LinkOption_DMA CEDDMA
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#define LinkOption_ResetStatistics CEDRSTAT
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/*****************************************************************************/
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/* Equates for the ouput V24 interface flags. */
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/*****************************************************************************/
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#define CED24RTS 0x01
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#define CED24DTR 0x02
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#define CED24DRS 0x04
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#define CED24SLS 0x08
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#define CED24TST 0x10
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/* Nicer names for NT-style code */
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#define IR_OV24RTS CED24RTS
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#define IR_OV24DTR CED24DTR
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#define IR_OV24DSRS CED24DRS
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#define IR_OV24SlSt CED24SLS
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#define IR_OV24Test CED24TST
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/*****************************************************************************/
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/* Equates for the input V24 interface flags. */
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/*****************************************************************************/
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#define CED24CTS 0x01
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#define CED24DSR 0x02
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#define CED24DCD 0x04
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#define CED24RI 0x08
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/* Nicer names for NT-style code */
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#define IR_IV24CTS CED24CTS
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#define IR_IV24DSR CED24DSR
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#define IR_IV24DCD CED24DCD
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#define IR_IV24RI CED24RI
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#define IR_IV24Test 0x10
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/*****************************************************************************/
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/* Structure for the device driver interface record. */
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/*****************************************************************************/
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#define CEDSTCRC 0 /* Frames received with incorrect CRC */
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#define CEDSTOFL 1 /* Frames received longer than the maximum */
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#define CEDSTUFL 2 /* Frames received less than 4 octets long */
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#define CEDSTSPR 3 /* Frames received ending on a non-octet bndry */
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#define CEDSTABT 4 /* Aborted frames received */
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#define CEDSTTXU 5 /* Transmitter interrupt underruns */
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#define CEDSTRXO 6 /* Receiver interrupt overruns */
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#define CEDSTDCD 7 /* DCD (RLSD) lost during frame reception */
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#define CEDSTCTS 8 /* CTS lost while transmitting */
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#define CEDSTDSR 9 /* DSR drops */
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#define CEDSTHDW 10 /* Hardware failures - adapter errors */
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#define CEDSTMAX 11
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#define SA_CRC_Error CEDSTCRC
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#define SA_RxFrameTooBig CEDSTOFL
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#define SA_RxFrameTooShort CEDSTUFL
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#define SA_Spare CEDSTSPR
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#define SA_RxAbort CEDSTABT
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#define SA_TxUnderrun CEDSTTXU
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#define SA_RxOverrun CEDSTRXO
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#define SA_DCDDrop CEDSTDCD
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#define SA_CTSDrop CEDSTCTS
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#define SA_DSRDrop CEDSTDSR
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#define SA_HardwareError CEDSTHDW /* e.g. CmdBufferFull not set */
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#define SA_Max_Stat CEDSTMAX
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typedef struct _INTERFACE_RECORD
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{
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/***************************************************************************/
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/* Note: we are here trying to mirror the OS/2 layout, complete with */
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/* lengths. However, due to the (justifiable) pickiness of the 32- */
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/* bit compiler, all shorts have been changed to 'int's - that way */
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/* the results of calculations can be assigned to them without a lot */
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/* of shenanigans (or typecasting). */
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/***************************************************************************/
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int RxFrameCount; /* incremented after each frame rx'd */
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int TxMaxFrSizeNow; /* max available frame size av. now */
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/* (changes after each Tx DevIoctl */
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/* to DD or after Tx completed) */
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int StatusCount; /* How many status events have been */
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/* triggered. */
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UCHAR V24In; /* Last 'getv24i/f' value got */
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UCHAR V24Out; /* Last 'setv24 outputs' value set */
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/* The values for the indices into the link statistics array of the */
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/* various types of statistic. */
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int StatusArray[SA_Max_Stat];
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} IR,
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* PIR;
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/*****************************************************************************/
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/* New structure used by the link to acumulate stats *STAT1*/
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/*****************************************************************************/
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typedef struct _STATS
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{
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int StatusCount;
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int StatusArray[SA_Max_Stat];
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} STATS;
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/*****************************************************************************/
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/* Structure for the set link characteristics parameter block. */
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/*****************************************************************************/
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typedef struct _SLPARMS
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{
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int SLFrameSize; /* max frame size on link - must be */
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/* in range 270 to ?2K-ish */
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LONG SLDataRate; /* not used by us - external clocks */
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UCHAR SLOurAddress1; /* ) e.g C1/FF or 00/00 or 01/03 */
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UCHAR SLOurAddress2; /* ) */
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UCHAR SLLinkOptionsByte; /* see documentation & LinkOption_* */
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UCHAR SLSpare1;
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}
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SLPARMS;
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#ifndef IMADRIVER
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/*****************************************************************************/
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/* DEVICEIOCTL macros */
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/*****************************************************************************/
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/* NT_SUCCESS ripped of from DDK's ntdef.h, which we do not want to include */
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/* for now temporarily (12/5/92) */
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#define NT_SUCCESS(Status) ((NTSTATUS)(Status) >= 0)
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#define SETEVENTHANDLE(H) \
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NtDeviceIoControlFile(seldrvrh,H,NULL,NULL,&IoStatus, \
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IoctlCodeSetEvent,NULL,0L,NULL,0L)
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#define SETINTERFACERECORD(R) \
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NtDeviceIoControlFile(seldrvrh,NULL,NULL,NULL,&IoStatus, \
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IoctlCodeSetInterfaceRecord,&R,sizeof(R), \
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NULL,0L)
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#define SETV24STATUS \
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NtDeviceIoControlFile(seldrvrh,NULL,NULL,NULL,&IoStatus, \
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IoctlCodeSetV24,NULL,0L, \
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&pInterfaceRecord->V24Out,1L); \
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\
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if (SavedIROut != (pInterfaceRecord->V24Out & 0x03)) \
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{ \
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SavedIROut = (pInterfaceRecord->V24Out & 0x03); \
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pModemStatus->V24Out = pInterfaceRecord->V24Out; \
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}
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#define GETV24STATUS(rc) \
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rc |= NtDeviceIoControlFile(seldrvrh,NULL,NULL,NULL,&IoStatus, \
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IoctlCodeGetV24,NULL,0L,NULL,0L); \
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rc |= READINTERFACERECORD; \
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if (SavedIRIn != (InterfaceRecord.V24In & 0x0F)) \
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{ \
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SavedIRIn = (InterfaceRecord.V24In & 0x0F); \
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pModemStatus->V24In = InterfaceRecord.V24In; \
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}
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/*****************************************************************************/
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/* Check for reset stats request and reset if required *STAT1*/
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/*****************************************************************************/
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#define SETLINKCHARACTERISTICS(A,rc) \
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rc = NtDeviceIoControlFile(seldrvrh,NULL,NULL,NULL,&IoStatus, \
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IoctlCodeSetLinkChar,&A,sizeof(A),NULL,0L);\
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if (A.SLLinkOptionsByte & CEDRSTAT) \
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{ \
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memset(&Stats,0,sizeof(STATS)); \
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}
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/*****************************************************************************/
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/* Note we now pass the user buffer in the input fields, not the output */
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/* fields CDDD1*/
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/*****************************************************************************/
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#define TRANSMITFRAME(A,B) \
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NtDeviceIoControlFile(seldrvrh,NULL,NULL,NULL,&IoStatus, \
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IoctlCodeTxFrame,A,B,NULL,0L);
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#define RECEIVEFRAME(A,B) \
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NtDeviceIoControlFile(seldrvrh,NULL,NULL,NULL,&IoStatus, \
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IoctlCodeRxFrame,NULL,0L,A,B);
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/*****************************************************************************/
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/* Due to a problem sharing a structure between the driver and link we're */
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/* going to get the driver to reset it's stats after every call to read the */
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/* interface record, and get the link to accumulate the stats *STAT1*/
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/*****************************************************************************/
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#define READINTERFACERECORD \
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NtDeviceIoControlFile(seldrvrh,NULL,NULL,NULL,&IoStatus, \
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IoctlCodeReadInterfaceRecord,NULL,0L, \
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&InterfaceRecord,sizeof(InterfaceRecord));\
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if (!rc) \
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{ \
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int i; \
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Stats.StatusCount += InterfaceRecord.StatusCount; \
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for (i=0;i<SA_Max_Stat;i++) \
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{ \
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Stats.StatusArray[i] += InterfaceRecord.StatusArray[i]; \
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} \
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}
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#endif
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#pragma option pop /*P_O_Pop*/
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