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381 lines
13 KiB
Plaintext
381 lines
13 KiB
Plaintext
;
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; File: SCSI.a
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;
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; Copyright: © 1990-1992 by Apple Computer, Inc., all rights reserved.
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;
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; Change History (most recent first):
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;
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; <9> 7/1/92 DCL This file is the replacement for the now obsolete SCSIEqu.a.
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; Changed the 'including' name to match the new file name.
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; <8> 11/27/91 MH Add include of traps.a for _SCSIDispatch trap definition
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; <7> 11/27/91 MH Remove unsupported NewSCSI trap macros and selectors
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; <6> 1/30/91 gbm sab, #38: Change the ‘already including this file’ variable to
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; all uppercase (for security reasons)
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; <5> 11/12/90 JL Added scsiInstall equate
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;
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; To Do:
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;
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; Version: 3.19
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; Created: Friday, October 20, 1989 at 9:50:00 PM
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;
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;
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; Equates for SCSI boot, mgr routines
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; SCSI Traps
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;
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; 1.5 jwk 07/15/1989 NEEDED FOR AURORA - Added BusDevRst bit, and changed error codes to SysErr range
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; 1.4 jwk 06/29/1989 NEEDED FOR AURORA - Renamed HeadOfQ bit to Immed bit (more accurate)
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; 1.3 jwk 06/13/1989 Reorganized source to be Universal-ROM friendly
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; 1.2 jwk 02/26/1989 Padded PB for longword alignment
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; 1.1 jwk 02/26/1989 Adding equates for async SCSI Mgr trap
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; 1.0 CCH 11/ 9/1988 Adding to EASE.
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; END EASE MODIFICATION HISTORY
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;•1.1 CCH 9/14/1988 Updated EASE with the current rev of this file.
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;________________________________________________________________________________
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IF &TYPE('__INCLUDINGSCSI__') = 'UNDEFINED' THEN
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__INCLUDINGSCSI__ SET 1
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IF &TYPE('__INCLUDINGTRAPS__') = 'UNDEFINED' THEN
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INCLUDE 'Traps.a'
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ENDIF
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; misc SCSI driver equates
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scMacID EQU $80 ; SCSI ID for Macintosh Plus (bit 7)
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SCSIDrvrs EQU $B2E ; (word) bitmap for loaded SCSI drivers
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; SCSI error codes
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scCommErr EQU 2 ; communications error (operation timeout)
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scArbNBErr EQU 3 ; arbitration timeout waiting for not BSY
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scBadparmsErr EQU 4 ; bad parameter or TIB opcode
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scPhaseErr EQU 5 ; SCSI bus not in correct phase for attempted operation
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scCompareErr EQU 6 ; data compare error
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scMgrBusyErr EQU 7 ; SCSI Manager busy with another operation
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; when SCSIGet was called
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scSequenceErr EQU 8 ; attempted operation is out of sequence;
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; e.g., calling SCSISelect before doing
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; SCSIGet. Incorrectly written drivers
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; can cause this error.
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scBusTOErr EQU 9 ; CPU bus timeout when attempting read or
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; write in pseudo-DMA mode -- indicates
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; that the data wasn't ready within the
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; 'bus timeout' period. (Mac SE & Mac II only)
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scComplPhaseErr EQU 10 ; SCSI bus wasn't in Status phase when
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; SCSIComplete was called -- the SCSI
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; Manager may have had to throw away data
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; (or write 'filler' bytes) in order to
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; reach the Status phase. Indicates that
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; the driver didn't handle SCSI bus phase
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; changes correctly.
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; misc SCSI driver equates
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scDefaultID EQU 7 ; default CPU SCSI id
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;---------------------------------------------------
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;
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; the information pertaining to the read/write
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; command block interpreter.
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;
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; SCSI command block equates.
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;
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scOpcode EQU 0 ; offsets into command "line" for data xfer
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scParam1 EQU 2
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scParam2 EQU 6
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scSize EQU 10 ; size of a command line
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scInc EQU 1 ; xfer with address increment
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scNoInc EQU 2 ; xfer without address increment
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scAdd EQU 3 ; add count to address
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scMove EQU 4 ; MOVE data from addr1 to addr2
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scLoop EQU 5 ; decrement loop counter and branch
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scNop EQU 6 ; do very little
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scStop EQU 7 ; then stop doing even that
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scComp EQU 8 ; compare bytes with address increment
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;
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; The layout of block 0 of a bootable SCSI device.
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;
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sbSigWord EQU $4552 ; block 0 validator
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sbSig EQU 0 ; signature word
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sbBlkSize EQU 2 ; block size of device
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sbBlkCount EQU 4 ; # blocks on device
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sbDevType EQU 8 ; device type code
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sbDevID EQU 10
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sbData EQU 12 ; start of data section
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sbDrvCount EQU 16 ; # drivers following
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sbDrvrs EQU 18 ; start of driver descriptors
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; Driver descriptors
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ddBlock EQU 0 ; physical block of driver
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ddSize EQU 4 ; block count of driver
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ddType EQU 6 ; Processor type of driver
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ddLen EQU 8
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sbMac EQU 1 ; Macintosh driver type
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;
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; Partition Descriptors
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;
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pdSigWord EQU $5453 ; block 1 validator
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pmSig EQU 0 ; unique value for map entry blk
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pmSigPad EQU 2 ; currently unused
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pmMapBlkCnt EQU 4 ; # of blks in partition map
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pmPyPartStart EQU 8 ; first physical block of partition
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pmPartBlkCnt EQU 12 ; number of blocks in partition
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pmPartName EQU 16 ; ASCII partition name
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pmParType EQU 48 ; ASCII partition type
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pmLgDataStart EQU 80 ; log. # of partition's 1st data blk
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pmDataCnt EQU 84 ; # of blks in partition's data area
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pmPartStatus EQU 88 ; bit field for partition status
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pmLgBootStart EQU 92 ; logical blk of partition's boot code
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pmBootSize EQU 96 ; number of bytes in boot code
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pmBootAddr EQU 100 ; memory load address of boot code
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pmBootAddr2 EQU 104 ; currently unused
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pmBootEntry EQU 108 ; entry point of boot code
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pmBootEntry2 EQU 112 ; currently unused
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pmBootCksum EQU 116 ; checksum of boot code
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pmProcessor EQU 120 ; ASCII for the processor type
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pmPad EQU 124 ; 512 bytes long, currently unused
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hfsID EQU 'TFS1' ; The HFS filesystem ID
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;Routine Selectors
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scsiReset EQU 0
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scsiGet EQU 1
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scsiSelect EQU 2
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scsiCmd EQU 3
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scsiComplete EQU 4
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scsiRead EQU 5
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scsiWrite EQU 6
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scsiInstall EQU 7
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scsiRBlind EQU 8
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scsiWBlind EQU 9
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scsiStat EQU 10
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scsiSelAtn EQU 11
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scsiMsgIn EQU 12
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scsiMsgOut EQU 13
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numSelectors EQU 14
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MACRO
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_SCSIReset
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MOVE #scsiReset,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSIGet
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MOVE #scsiGet,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSISelect
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MOVE #scsiSelect,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSICmd
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MOVE #scsiCmd,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSIComplete
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MOVE #scsiComplete,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSIRead
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MOVE #scsiRead,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSIWrite
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MOVE #scsiWrite,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSIInstall
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MOVE #scsiInstall,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSIRBlind
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MOVE #scsiRBlind,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSIWBlind
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MOVE #scsiWBlind,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSIStat
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MOVE #scsiStat,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_scsiSelAtn
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MOVE #scsiSelAtn,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSIMsgIn
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MOVE #scsiMsgIn,-(sp)
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_SCSIDispatch
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ENDM
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MACRO
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_SCSIMsgOut
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MOVE #scsiMsgOut,-(sp)
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_SCSIDispatch
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ENDM
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;
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; New SCSI Manager
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;
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; SCSI request parameter block
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;
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scsiPB RECORD 0, INCREMENT
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scsiQLink DS.L 1 ; --- link to next request block
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scsiPrivate DS.L 1 ; --- SCSI Mgr private storage
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scsiVersion DS.W 1 ; --> version of the parameter block
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scsiBus DS.W 1 ; --> SCSI bus number
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scsiReqID DS.B 1 ; --> SCSI ID
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scsiReqLUN DS.B 1 ; --> logical unit number
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scsiResult DS.W 1 ; <-- return code from SCSI Manager
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scsiCompletion DS.L 1 ; --> address of completion routine
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scsiUsrData DS.L 1 ; --> pointer to user's storage
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scsiReqTO DS.L 1 ; --> in ms
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scsiUsrFlags DS.W 1 ; --> user's operation flag bits
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scsiSelTO DS.W 1 ; --> in ms
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scsiMgrFlags DS.L 1 ; --> SCSI operation flags
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scsiLinkCmd DS.L 1 ; --> ptr to next linked command
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scsiSnsBuf DS.L 1 ; --> sense buffer pointer
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scsiSnsLen DS.B 1 ; --> length of sense buffer ( at least 4 bytes )
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scsiSnsXfer DS.B 1 ; <-- actual sense bytes transferred
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scsiStatus DS.B 1 ; --> SCSI status byte
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scsiCmdLen DS.B 1 ; --> length of the command buffer
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scsiCmdBuf DS.L 1 ; --> command buffer pointer
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scsiDCInstr DS.L 1 ; --> ptr to array of data-chaining instructions
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scsiDataLen DS.L 1 ; --> requested data transfer length
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scsiDataXfer DS.L 1 ; <-- actual data bytes transferred
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scsiPBSize EQU *-scsiPB ; size of SCSI request parameter block
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ENDR
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;
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; flags
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;
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; SCSI Mgr flags:
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;
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scsiFParity EQU $00000001 ; Enable parity checking
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scsiFNoDisc EQU $00000002 ; Disconnection not allowed for this request
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scsiFWrite EQU $00000004 ; output data to the SCSI bus
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scsiFFast EQU $00000008 ; Transfer data in the "fast" mode
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scsiFPhysical EQU $00000010 ; physical addresses are used (enables DMA)
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scsiFAsync EQU $00000020 ; asynchronous request
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scsiFBusDevRst EQU $00000040 ; attempt to send a Bus Device Reset message
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scsiFImmed EQU $00000080 ; Immediate ("page fault") service requested
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; SCSI Mgr bits:
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scsiBParity EQU 0 ; enable parity checking
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scsiBNoDisc EQU 1 ; disconnection not allowed for this request
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scsiBWrite EQU 2 ; output data to the SCSI bus
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scsiBFast EQU 3 ; transfer data in the "fast" mode
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scsiBPhysical EQU 4 ; physical addresses are used (enables DMA)
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scsiBAsync EQU 5 ; asynchronous request
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scsiBBusDevRst EQU 6 ; attempt to send a Bus Device Reset message
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scsiBImmed EQU 7 ; Immediate ("page fault") service requested
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;
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; Data-chaining related equates
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;
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dcLoop EQU -1 ; loop opcode (dcLoop,count,offset,store)
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dcStop EQU 0 ; stop opcode (dcStop,-----,------,-----)
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; ; move opcode ( addr ,count,offset,store)
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dcInstr RECORD 0, INCREMENT
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dcAddr DS.L 1 ; buffer start address (0,-1,other)
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dcCount DS.L 1 ; generic count
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dcOffset DS.L 1 ; generic "offset"
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dcStore DS.L 1 ; used to create "Saved Data Pointer"
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dcSize EQU *-dcInstr ; size of one data-chaining instruction
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ENDR
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;
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; Status byte equates
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;
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statusInitial EQU $FF ; initial "invalid" status byte value
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statusByteCode EQU $9E ; mask to clear vendor-unique bits in status byte
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statusRsrvBit EQU 7 ; reserved bit in status byte (must be zero for autosense)
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statusGood EQU $00 ; status byte values with VU and reserved bits masked
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statusChkCond EQU $02
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statusCondMetGood EQU $04
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statusBusy EQU $08
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statusIntGood EQU $10
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statusIntCMGood EQU $14
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statusRsrvConflict EQU $18
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;
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; error codes on the original call
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;
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scsiBadPBErr EQU -470 ; invalid field(s) in the parameter block
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;
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; error codes in the "scsiResult" field
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;
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scsiOverrunErr EQU -471 ; attempted to transfer too many bytes
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scsiTransferErr EQU -472 ; write flag conflicts with data transfer phase
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scsiBusTOErr EQU -473 ; bus error during transfer
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scsiSelectTOErr EQU -474 ; scsiSelTO exceeded (selection failed)
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scsiTimeOutErr EQU -475 ; scsiReqTO exceeded
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scsiBusResetErr EQU -476 ; the bus was reset, so your request was aborted
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scsiBadStatus EQU -477 ; non-zero (not "Good") status returned
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scsiNoStatusErr EQU -478 ; device did not go through a status phase
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scsiLinkFailErr EQU -479 ; linked command never executed
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scsiUnimpVctErr EQU -489 ; unimplemented routine was called
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;
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; "in progress" codes in the "scsiResult" field
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;
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scsiEnqueued EQU $0001 ; enqueued, waiting to start
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scsiArbitrated EQU $0002 ; arbitration in progress, or attempted
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scsiSelection EQU $0003 ; selection in progress, or target selected
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scsiDisc EQU $0004 ; disconnected
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scsiDataOut EQU $0010 ; Data Out phase
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scsiDataIn EQU $0011 ; Data In phase
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scsiCommand EQU $0012 ; Command phase
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scsiStatus EQU $0013 ; Status phase
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scsiIllegal1 EQU $0014 ; Unknown (illegal) phase
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scsiIllegal2 EQU $0015 ; Unknown (illegal) phase
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scsiMessageOut EQU $0016 ; Message Out phase
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scsiMessageIn EQU $0017 ; Message In phase
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;
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; SCSIBusInfo information selectors
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;
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scsiIntfLvl EQU 0 ; SCSI Mgr interface level (1-n)
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scsiBusTO EQU 1 ; byte-to-byte time limit (in us, 0=no timeout)
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scsiBusDMA EQU 2 ; bus has a dedicated DMA channel (1=has DMA)
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ENDIF ; ...already included |