IFND HIDEUNITS19_I HIDEUNITS19_I SET (1) ***************************************************************** * * * Filename: hideunits19.i * * Release: 1.59 * * Date: 13.11.1991 17:04 * * * * 'hidedisk.device' - Unit definitions. * * 19 sectors version. * * * * (C) Copyright 1991 Stefan Klensch All Rights Reserved * * * ***************************************************************** IFND EXEC_TYPES_I INCLUDE "exec/types.i" ENDC INCLUDE "exec/exec.i" IFND EXEC_SEMAPHORES_I INCLUDE "exec/semaphores.i" ENDC IFND DEVICES_TIMER_I INCLUDE "devices/timer.i" ENDC IFND RESOURCES_DISK_I INCLUDE "resources/disk.i" ENDC IFND HIDESECS19_I INCLUDE "hidesecs19.i" ENDC ***************************************************************** * UserUnit * ***************************************************************** * This little structure will be relinked into user's iosr on * * successful Opens. * ***************************************************************** STRUCTURE UserUnit,0 ; startof APTR usu_PrivateUnit ; ptr to privateunit ULONG usu_OpenFlags ; user's openflags LABEL UserUnit_SIZE ; sizeof ***************************************************************** * PrivateUnit * ***************************************************************** * This keeps all informations necessary for accessing HD/DD * * disks correctly. * ***************************************************************** STRUCTURE PrivateUnit,0 ; startof ***************************************************************** * Jmptable for mode-specific routines. * ***************************************************************** APTR pru_JmpTable ; this unit's jmptab ***************************************************************** * Backward reference to master-device and public unit. * ***************************************************************** APTR pru_Device ; ref to device APTR pru_PublicUnit ; ref to public unit ***************************************************************** * Technical constants this unit. * ***************************************************************** UWORD pru_NumSecs ; # sectors UWORD pru_NumTracks ; # tracks UWORD pru_Sync ; syncword 16 bit UWORD pru_Precomp01 ; precomp start track UWORD pru_ReadSz ; read-size DMA UWORD pru_WriteSz ; write-size DMA UWORD pru_GapSz ; sizeof gap front/rear UWORD pru_SecSz ; rawsector size (encoded) UWORD pru_TrackSz ; sizeof rawtrack UWORD pru_SearchGap ; gap for searching hdrs UWORD pru_SearchSectorSkip ; skipsize searching hdrs UWORD pru_LinearSkipBack ; skipback for linearsectors UWORD pru_LSyncToHdr ; offset lsync->header UWORD pru_SecDatOff ; sector data offset from hdr UWORD pru_ReadBufOff ; offset read ULONG pru_LSync ; syncword 32 bit ULONG pru_MaxOffset ; max. offset ULONG pru_TimeOut ; timeout blkdma ***************************************************************** * Private diskstate/type. * ***************************************************************** UBYTE pru_DiskType ; type of (HD or not) UBYTE pru_DiskEmpty ; TRUE if this has no disk UBYTE pru_DiskDense ; 1 if HD UBYTE pru_Retries ; private # retries UBYTE pru_SecId ; sector id UBYTE pru_Pad0 ; fill ***************************************************************** * Private diskchange-support. * ***************************************************************** STRUCT pru_ChgIrList,MLH_SIZE ; list for diskchange-link APTR pru_SingleChgIr ; single-ir ULONG pru_ChangeCnt ; changecounter LABEL PrivateUnit_SIZE ; sizeof ***************************************************************** * JmpTable * ***************************************************************** * An address of such a jmptable will be relinked into private * * unit structure for relative jumping on mode (HD/DD) * ***************************************************************** STRUCTURE JmpTable,0 ; startof APTR jt_DecodeLong ; decode one long APTR jt_DecodeData ; decode no checksum APTR jt_DecWithChk ; decode + chksum APTR jt_DecodeSecLabel ; decode sector label APTR jt_EncodeLong ; encode one long APTR jt_EncodeLongs ; encode more longs APTR jt_EncChkSetData ; encode,make+set datachksum APTR jt_EncodeSecLabel ; encode sector label APTR jt_AdjustFormatSec ; make edges of sec APTR jt_SetHdrChkSum ; set header's chk APTR jt_CmpHdrChkSum ; compare chksum hdr APTR jt_SetDatChkSum ; set data chk APTR jt_CmpDatChkSum ; compare data chksum APTR jt_CopyRawSecs ; copy raw sectors LABEL JmpTable_SIZE ; sizeof ***************************************************************** * HideBltNode * ***************************************************************** * This structure will be used for blitter - usage in MFM mode. * * It keeps all stuff necessary for blitter, pointers... * ***************************************************************** STRUCTURE HideBltNode,0 ; startof ***************************************************************** * From here to hbn_Cleanup, this is a standard bltnode (see * * hardware/blit.i). * ***************************************************************** APTR hbn_Next ; next in list APTR hbn_Function ; func to call BYTE hbn_Stat ; not used BYTE hbn_Dummy ; not used WORD hbn_BltSize ; blitter's size WORD hbn_BeamSync ; not used APTR hbn_Cleanup ; not used ***************************************************************** * # of bytes, source and destination address. * ***************************************************************** ULONG hbn_Bytes ; # bytes blitting APTR hbn_Source ; srcptr APTR hbn_Dest ; dstptr ***************************************************************** * Backward reference to private unit. * ***************************************************************** APTR hbn_PrivUnit ; public unitptr caller's ***************************************************************** * Field to store next B/A/Dptr. On multiple blit operations * * (MFM encoding), pointers will be precomputed while blit is * * in progress and stuffed when blit finished. * ***************************************************************** STRUCT hbn_NextBAD,(4*3) ; next ptrs to stuff LABEL HideBltNode_SIZE ; sizeof ***************************************************************** * IndexData * ***************************************************************** * This data is linked into DRU_INDEX - interrupt's IS_DATA * * field and is used for easier transfer-start of DMA. * ***************************************************************** STRUCTURE IndexData,0 ; startof ULONG ixdat_DmaWords ; # words for transfer APTR ixdat_DmaStart ; start-routine DMA APTR ixdat_PrivUnit ; privunit current APTR ixdat_Device ; dev-reference LABEL IndexData_SIZE ; sizeof ***************************************************************** * PublicUnit * ***************************************************************** * This structure is and keeps the public part, which is shared * * by the unit owners HD and DD * ***************************************************************** STRUCTURE PublicUnit,UNIT_SIZE ; std execunit ***************************************************************** * Cache control section, MUST stand here (xx(ax,dx)) * * On 19 sectors, GCR_SECTORS is increased to 20 sectors to * * be equal with 20 sector unit. * ***************************************************************** STRUCT puu_CachePtrs,(GCR_SECTORS*4) ; ptrs for HD/DD APTR puu_CachePtrsPad ; longpad for 20 secs STRUCT puu_CacheErrs,(GCR_SECTORS*1) ; error-field UBYTE puu_CacheErrsPad ; bytepad for 20 secs UWORD puu_CacheTrack ; track in cache APTR puu_CacheDataStart ; start of cachedata UBYTE puu_CacheFlags ; flags UBYTE puu_CachePad0 ; fillbyte ***************************************************************** * DD and HD private unit * ***************************************************************** STRUCT puu_DDPru,PrivateUnit_SIZE ; privunit DD STRUCT puu_HDPru,PrivateUnit_SIZE ; privunit HD ***************************************************************** * Backward reference to master. * ***************************************************************** APTR puu_Device ; devptr ***************************************************************** * Unitnumber and process-control flags. * ***************************************************************** UBYTE puu_UnitNum ; number of unit UBYTE puu_Flags ; own flags, see below UBYTE puu_MotOffDelays ; delaycnt motor off UBYTE puu_DskCtrl ; current state disk UBYTE puu_Turbo ; set if 68020/higher UBYTE puu_UserMemOdd ; true, if usermem odd UBYTE puu_UserMemChip ; true, if usermem in chip ***************************************************************** * Read/Write section (std read/write). * ***************************************************************** UBYTE puu_RWSector ; read/write sector UWORD puu_RWTrack ; read/write track APTR puu_RWBuf ; read/write buf APTR puu_RWSecLabel ; read/write seclabel ***************************************************************** * Current track head is above. * ***************************************************************** UWORD puu_CurTrack ; current track ***************************************************************** * Msgports for timer/dru message - sends/replies. * ***************************************************************** STRUCT puu_DruTimerMp,MP_SIZE ; timer reply/dru ***************************************************************** * Diskresource-Unit for port allocation and INDEX/WORDSYNC * * interrupt recognition. * ***************************************************************** STRUCT puu_Dru,DRU_SIZE ; DiskResource-Unit ***************************************************************** * VBlank and MicroHz Timer for waiting. * ***************************************************************** STRUCT puu_VBTimerIO,IOTV_SIZE ; timereq vblank STRUCT puu_MHTimerIO,IOTV_SIZE ; timereq micro ***************************************************************** * Task section, std Exec task * ***************************************************************** STRUCT puu_Task,TC_SIZE ; task struct ***************************************************************** * Buffer section, chipbuffer r/w pointer to current for hard- * * read/write and private chip sector for fast -> chip copy. * ***************************************************************** APTR puu_TrackBuf ; trackbuffer APTR puu_PrivChipSec ; private chip sector ***************************************************************** * Bsy section, masterflag, sectors decoded, read as write- * * prepare and syncs found by synchandler. * ***************************************************************** UBYTE puu_BsyMode ; TRUE, if to do busy UBYTE puu_BsySecsDecode ; # secs decoded bsy UBYTE puu_BsyWriteRead ; read before write UBYTE puu_BsyPad0 ; fill UWORD puu_BsySyncsFound ; #syncs found ***************************************************************** * Signal semaphore for change-support. * * This inhibits those ugly problems removing/adding diskchange- * * interrupts while unittask scans list after diskremove/insert. * ***************************************************************** STRUCT puu_ChgSigSem,SS_SIZE ; signalsem for lock ***************************************************************** * Delays for step/settle/recalibrate. * ***************************************************************** ULONG puu_StepDelay ; delay one step ULONG puu_SettleDelay ; delay after seekend ULONG puu_Seek000Delay ; recalibrate ***************************************************************** * HideBlitNode for MFM blitter support. * ***************************************************************** STRUCT puu_Hbn,HideBltNode_SIZE ; private bltnode ***************************************************************** * Custom base of Amiga hardware * * Remarked here to avoid absolute long 'lea' (codespace). * ***************************************************************** APTR puu_CustomBase ; ptr customregs LABEL PublicUnit_SIZE ; sizeof ***************************************************************** * Definitions for puu_CacheFlags * ***************************************************************** BITDEF PUUC,HIGHDENS,5 ; buf has high-density cache BITDEF PUUC,REORG,4 ; buf reorganized for write BITDEF PUUC,SHORT,3 ; short cache (write -2) BITDEF PUUC,ERROR,2 ; buf has chksum/sector err(s) BITDEF PUUC,NODMA,1 ; nosechdr reading wordsync BITDEF PUUC,CHANGED,0 ; buf was changed by write ***************************************************************** * Unknown track for cache-clearing/making invalid. * ***************************************************************** PUUC_UNKNOWN EQU (-1) ; this doesn't exist ***************************************************************** * Clearmask for search headers. * ***************************************************************** PUUC_SEARCH EQU (~(PUUCF_REORG|PUUCF_ERROR|PUUCF_SHORT)) ***************************************************************** * Unknown track for CurTrack * ***************************************************************** CURTRACK_UNKNOWN EQU (-2) ; not equal PUUC_UNKNOWN ! ***************************************************************** * Flags for OpenDevice(). Unit's default is read/write with * * BsyDecode/Encode (Decodes while Disk-DMA is in progress !!) * * and no 'click' if no disk is in drive. * * * * PUUOF_NOTBSY = 1 disables bsy-decoding (= trackdisk). * * PUUOF_DOKLICK = 1 enables those noisy 'click's. * ***************************************************************** BITDEF PUUO,NOTBSY,4 ; read not busy, if 1 BITDEF PUUO,DOKLICK,5 ; clicks on, if 1 ***************************************************************** * Flags - Definitions for puu_Flags * ***************************************************************** BITDEF PUU,DELOFF,7 ; delayed motor off BITDEF PUU,NOKLICK,6 ; no click, if 1 BITDEF PUU,STOPPED,5 ; unit stopped BITDEF PUU,MOTON,4 ; motor on, if 1 BITDEF PUU,CLOSE,3 ; unit closed, remove BITDEF PUU,EXT,2 ; ext cmd, if 1 BITDEF PUU,EMPTY,1 ; no disk in drive, if 1 BITDEF PUU,LAB,0 ; seclabel usage, if 1 ***************************************************************** * Private task-signals unittask. * * DMABLK occurs after read/write end of Disk-DMA. * ***************************************************************** BITDEF SIG,DMABLK,11 ; dma block end ***************************************************************** * TIMEDRU will be sent by disk.resource, if we got our stuff or * * by end of microhz-delay. * ***************************************************************** BITDEF SIG,DRUTIME,10 ; dru regot/timer end ***************************************************************** * NEWIO sent by VBlankTimer - Reply (DChange) or IOSTD from * * BeginIO's PutMsg. * ***************************************************************** BITDEF SIG,NEWIO,9 ; new io inport ***************************************************************** * KICKON restarts task after unit has been stopped. * ***************************************************************** BITDEF SIG,KICKON,8 ; kickon after sleep ***************************************************************** * BLTEND will arrive after QBlit is finished in MFM mode. * ***************************************************************** BITDEF SIG,BLTEND,4 ; qblit finished ***************************************************************** * INITREPLY is the answer of unittask when he's ready with * * own initialization. * ***************************************************************** BITDEF SIG,INITREPLY,4 ; initanswer task ***************************************************************** * NEWSYNC will be sent by SyncWatcher routine only. * ***************************************************************** BITDEF SIG,NEWSYNC,2 ; new sync occured ***************************************************************** * Task-priority/stack * ***************************************************************** PUU_TASKPRI EQU (10) ; std devicetask-priority PUU_TASKSTK EQU (800) ; stack for task ***************************************************************** * InitUnitMemList * ***************************************************************** * This structure is for allocating all stuff needed for a unit. * * Private, for documentation only. * ***************************************************************** STRUCTURE InitUnitMemList,0 ; startof STRUCT iuml_Node,LN_SIZE ; normal node UWORD iuml_NumEntries ; # entries ULONG iuml_UnitMem ; mem for unit-struct ULONG iuml_UnitSz ; sizeof ULONG iuml_StackMem ; taskstack-reqs/mem ULONG iuml_StackSz ; sizeof ULONG iuml_TrackMem ; chiptrack-reqs ULONG iuml_TrackSz ; sizeof ULONG iuml_ChipSecMem ; chip-sector memory ULONG iuml_ChipSecSz ; sizeof LABEL InitUnitMemList_SIZE ; sizeof ***************************************************************** * Number of entries in above memlist. * ***************************************************************** IUML_MEMENTRIES EQU (4) ; 4 entries requested ***************************************************************** * END of hideunits19.i * ***************************************************************** ENDC