Developer CD Series 1996 February: Tool Chest

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Text File | 1993-11-30 | 11.8 KB | 356 lines | [TEXT/MPS ]

; File: SCSI.a ; ; Copyright: © 1983-1993 by Apple Computer, Inc. ; All rights reserved. ; ; Version: System 7.1 for ETO #11 ; Created: Tuesday, March 30, 1993 18:00 ; ;___________________________________________________________________________ IF &TYPE('__INCLUDINGSCSI__') = 'UNDEFINED' THEN __INCLUDINGSCSI__ SET 1 IF &TYPE('__INCLUDINGTRAPS__') = 'UNDEFINED' THEN INCLUDE 'Traps.a' ENDIF ; misc SCSI driver equates scMacID EQU $80 ; SCSI ID for Macintosh Plus (bit 7) SCSIDrvrs EQU $B2E ; (word) bitmap for loaded SCSI drivers ; SCSI error codes scCommErr EQU 2 ; communications error (operation timeout) scArbNBErr EQU 3 ; arbitration timeout waiting for not BSY scBadparmsErr EQU 4 ; bad parameter or TIB opcode scPhaseErr EQU 5 ; SCSI bus not in correct phase for attempted operation scCompareErr EQU 6 ; data compare error scMgrBusyErr EQU 7 ; SCSI Manager busy with another operation ; when SCSIGet was called scSequenceErr EQU 8 ; attempted operation is out of sequence; ; e.g., calling SCSISelect before doing ; SCSIGet. Incorrectly written drivers ; can cause this error. scBusTOErr EQU 9 ; CPU bus timeout when attempting read or ; write in pseudo-DMA mode -- indicates ; that the data wasn't ready within the ; 'bus timeout' period. (Mac SE & Mac II only) scComplPhaseErr EQU 10 ; SCSI bus wasn't in Status phase when ; SCSIComplete was called -- the SCSI ; Manager may have had to throw away data ; (or write 'filler' bytes) in order to ; reach the Status phase. Indicates that ; the driver didn't handle SCSI bus phase ; changes correctly. ; misc SCSI driver equates scDefaultID EQU 7 ; default CPU SCSI id ;--------------------------------------------------- ; ; the information pertaining to the read/write ; command block interpreter. ; ; SCSI command block equates. ; scOpcode EQU 0 ; offsets into command "line" for data xfer scParam1 EQU 2 scParam2 EQU 6 scSize EQU 10 ; size of a command line scInc EQU 1 ; xfer with address increment scNoInc EQU 2 ; xfer without address increment scAdd EQU 3 ; add count to address scMove EQU 4 ; MOVE data from addr1 to addr2 scLoop EQU 5 ; decrement loop counter and branch scNop EQU 6 ; do very little scStop EQU 7 ; then stop doing even that scComp EQU 8 ; compare bytes with address increment ; ; The layout of block 0 of a bootable SCSI device. ; sbSigWord EQU $4552 ; block 0 validator sbSig EQU 0 ; signature word sbBlkSize EQU 2 ; block size of device sbBlkCount EQU 4 ; # blocks on device sbDevType EQU 8 ; device type code sbDevID EQU 10 sbData EQU 12 ; start of data section sbDrvCount EQU 16 ; # drivers following sbDrvrs EQU 18 ; start of driver descriptors ; Driver descriptors ddBlock EQU 0 ; physical block of driver ddSize EQU 4 ; block count of driver ddType EQU 6 ; Processor type of driver ddLen EQU 8 sbMac EQU 1 ; Macintosh driver type ; ; Partition Descriptors ; pdSigWord EQU $5453 ; block 1 validator pmSig EQU 0 ; unique value for map entry blk pmSigPad EQU 2 ; currently unused pmMapBlkCnt EQU 4 ; # of blks in partition map pmPyPartStart EQU 8 ; first physical block of partition pmPartBlkCnt EQU 12 ; number of blocks in partition pmPartName EQU 16 ; ASCII partition name pmParType EQU 48 ; ASCII partition type pmLgDataStart EQU 80 ; log. # of partition's 1st data blk pmDataCnt EQU 84 ; # of blks in partition's data area pmPartStatus EQU 88 ; bit field for partition status pmLgBootStart EQU 92 ; logical blk of partition's boot code pmBootSize EQU 96 ; number of bytes in boot code pmBootAddr EQU 100 ; memory load address of boot code pmBootAddr2 EQU 104 ; currently unused pmBootEntry EQU 108 ; entry point of boot code pmBootEntry2 EQU 112 ; currently unused pmBootCksum EQU 116 ; checksum of boot code pmProcessor EQU 120 ; ASCII for the processor type pmPad EQU 124 ; 512 bytes long, currently unused hfsID EQU 'TFS1' ; The HFS filesystem ID ;Routine Selectors scsiReset EQU 0 scsiGet EQU 1 scsiSelect EQU 2 scsiCmd EQU 3 scsiComplete EQU 4 scsiRead EQU 5 scsiWrite EQU 6 scsiInstall EQU 7 scsiRBlind EQU 8 scsiWBlind EQU 9 scsiStat EQU 10 scsiSelAtn EQU 11 scsiMsgIn EQU 12 scsiMsgOut EQU 13 numSelectors EQU 14 MACRO _SCSIReset MOVE #scsiReset,-(sp) _SCSIDispatch ENDM MACRO _SCSIGet MOVE #scsiGet,-(sp) _SCSIDispatch ENDM MACRO _SCSISelect MOVE #scsiSelect,-(sp) _SCSIDispatch ENDM MACRO _SCSICmd MOVE #scsiCmd,-(sp) _SCSIDispatch ENDM MACRO _SCSIComplete MOVE #scsiComplete,-(sp) _SCSIDispatch ENDM MACRO _SCSIRead MOVE #scsiRead,-(sp) _SCSIDispatch ENDM MACRO _SCSIWrite MOVE #scsiWrite,-(sp) _SCSIDispatch ENDM MACRO _SCSIInstall MOVE #scsiInstall,-(sp) _SCSIDispatch ENDM MACRO _SCSIRBlind MOVE #scsiRBlind,-(sp) _SCSIDispatch ENDM MACRO _SCSIWBlind MOVE #scsiWBlind,-(sp) _SCSIDispatch ENDM MACRO _SCSIStat MOVE #scsiStat,-(sp) _SCSIDispatch ENDM MACRO _scsiSelAtn MOVE #scsiSelAtn,-(sp) _SCSIDispatch ENDM MACRO _SCSIMsgIn MOVE #scsiMsgIn,-(sp) _SCSIDispatch ENDM MACRO _SCSIMsgOut MOVE #scsiMsgOut,-(sp) _SCSIDispatch ENDM ; ; New SCSI Manager ; ; SCSI request parameter block ; scsiPB RECORD 0, INCREMENT scsiQLink DS.L 1 ; --- link to next request block scsiPrivate DS.L 1 ; --- SCSI Mgr private storage scsiVersion DS.W 1 ; --> version of the parameter block scsiBus DS.W 1 ; --> SCSI bus number scsiReqID DS.B 1 ; --> SCSI ID scsiReqLUN DS.B 1 ; --> logical unit number scsiResult DS.W 1 ; <-- return code from SCSI Manager scsiCompletion DS.L 1 ; --> address of completion routine scsiUsrData DS.L 1 ; --> pointer to user's storage scsiReqTO DS.L 1 ; --> in ms scsiUsrFlags DS.W 1 ; --> user's operation flag bits scsiSelTO DS.W 1 ; --> in ms scsiMgrFlags DS.L 1 ; --> SCSI operation flags scsiLinkCmd DS.L 1 ; --> ptr to next linked command scsiSnsBuf DS.L 1 ; --> sense buffer pointer scsiSnsLen DS.B 1 ; --> length of sense buffer ( at least 4 bytes ) scsiSnsXfer DS.B 1 ; <-- actual sense bytes transferred scsiStatus DS.B 1 ; --> SCSI status byte scsiCmdLen DS.B 1 ; --> length of the command buffer scsiCmdBuf DS.L 1 ; --> command buffer pointer scsiDCInstr DS.L 1 ; --> ptr to array of data-chaining instructions scsiDataLen DS.L 1 ; --> requested data transfer length scsiDataXfer DS.L 1 ; <-- actual data bytes transferred scsiPBSize EQU *-scsiPB ; size of SCSI request parameter block ENDR ; ; flags ; ; SCSI Mgr flags: ; scsiFParity EQU $00000001 ; Enable parity checking scsiFNoDisc EQU $00000002 ; Disconnection not allowed for this request scsiFWrite EQU $00000004 ; output data to the SCSI bus scsiFFast EQU $00000008 ; Transfer data in the "fast" mode scsiFPhysical EQU $00000010 ; physical addresses are used (enables DMA) scsiFAsync EQU $00000020 ; asynchronous request scsiFBusDevRst EQU $00000040 ; attempt to send a Bus Device Reset message scsiFImmed EQU $00000080 ; Immediate ("page fault") service requested ; SCSI Mgr bits: scsiBParity EQU 0 ; enable parity checking scsiBNoDisc EQU 1 ; disconnection not allowed for this request scsiBWrite EQU 2 ; output data to the SCSI bus scsiBFast EQU 3 ; transfer data in the "fast" mode scsiBPhysical EQU 4 ; physical addresses are used (enables DMA) scsiBAsync EQU 5 ; asynchronous request scsiBBusDevRst EQU 6 ; attempt to send a Bus Device Reset message scsiBImmed EQU 7 ; Immediate ("page fault") service requested ; ; Data-chaining related equates ; dcLoop EQU -1 ; loop opcode (dcLoop,count,offset,store) dcStop EQU 0 ; stop opcode (dcStop,-----,------,-----) ; ; move opcode ( addr ,count,offset,store) dcInstr RECORD 0, INCREMENT dcAddr DS.L 1 ; buffer start address (0,-1,other) dcCount DS.L 1 ; generic count dcOffset DS.L 1 ; generic "offset" dcStore DS.L 1 ; used to create "Saved Data Pointer" dcSize EQU *-dcInstr ; size of one data-chaining instruction ENDR ; ; Status byte equates ; statusInitial EQU $FF ; initial "invalid" status byte value statusByteCode EQU $9E ; mask to clear vendor-unique bits in status byte statusRsrvBit EQU 7 ; reserved bit in status byte (must be zero for autosense) statusGood EQU $00 ; status byte values with VU and reserved bits masked statusChkCond EQU $02 statusCondMetGood EQU $04 statusBusy EQU $08 statusIntGood EQU $10 statusIntCMGood EQU $14 statusRsrvConflict EQU $18 ; ; error codes on the original call ; scsiBadPBErr EQU -470 ; invalid field(s) in the parameter block ; ; error codes in the "scsiResult" field ; scsiOverrunErr EQU -471 ; attempted to transfer too many bytes scsiTransferErr EQU -472 ; write flag conflicts with data transfer phase scsiBusTOErr EQU -473 ; bus error during transfer scsiSelectTOErr EQU -474 ; scsiSelTO exceeded (selection failed) scsiTimeOutErr EQU -475 ; scsiReqTO exceeded scsiBusResetErr EQU -476 ; the bus was reset, so your request was aborted scsiBadStatus EQU -477 ; non-zero (not "Good") status returned scsiNoStatusErr EQU -478 ; device did not go through a status phase scsiLinkFailErr EQU -479 ; linked command never executed scsiUnimpVctErr EQU -489 ; unimplemented routine was called ; ; "in progress" codes in the "scsiResult" field ; scsiEnqueued EQU $0001 ; enqueued, waiting to start scsiArbitrated EQU $0002 ; arbitration in progress, or attempted scsiSelection EQU $0003 ; selection in progress, or target selected scsiDisc EQU $0004 ; disconnected scsiDataOut EQU $0010 ; Data Out phase scsiDataIn EQU $0011 ; Data In phase scsiCommand EQU $0012 ; Command phase scsiStatus EQU $0013 ; Status phase scsiIllegal1 EQU $0014 ; Unknown (illegal) phase scsiIllegal2 EQU $0015 ; Unknown (illegal) phase scsiMessageOut EQU $0016 ; Message Out phase scsiMessageIn EQU $0017 ; Message In phase ; ; SCSIBusInfo information selectors ; scsiIntfLvl EQU 0 ; SCSI Mgr interface level (1-n) scsiBusTO EQU 1 ; byte-to-byte time limit (in us, 0=no timeout) scsiBusDMA EQU 2 ; bus has a dedicated DMA channel (1=has DMA) ENDIF ; ...already included