sys7.1-doc-wip/Internal/Asm/IOPEqu.a

;
;	File:		IOPEqu.a
;
;	Contains:	equates used to interface with the IOPmgr
;
;	Written by:	Gary Davidian
;
;	Copyright:	© 1987-1990 by Apple Computer, Inc., all rights reserved.
;
;	Change History (most recent first):
;
;		 <4>	 1/30/91	gbm		sab, #38: Change the ‘already including this file’ variable to
;									all uppercase (for security reasons)
;		 <2>	 3/15/90	djw		Add some IOP SCC declarations needed in the patch file
;	   <1.1>	 5/20/89	GGD		Moved the IOP manager trap definitions into Traps.a
;	   <1.0>	 11/9/88	CCH		Adding to EASE.
;	   <1.1>	 11/6/88	GGD		Moved some equates into HardwareEqu.a
;	   <1.0>	 9/24/88	rwh		Entered into EASE for the first time
;

	IF &TYPE('__INCLUDINGIOPEQU__') = 'UNDEFINED' THEN
__INCLUDINGIOPEQU__	SET	1

SccIopNum		equ		0
SwimIopNum		equ		1
MaxIopNum		equ		7			; we support up to 8 IOPs per system
NumberOfIOPs	equ		MaxIopNum+1

MaxIopMsgNum	equ		7			; message numbers range 1..7
MaxIopMsgLen	equ		32			; message length range is 0..32 bytes

IOPRequestInfo	record	0,increment	; parameter block for _IOPMsgRequest
irQLink			ds.l	1			; [long]    link to next queue element [pointer]
irQType			ds.w	1			; [word]    queue element type [word]
irIOPNumber		ds.b	1			; [byte] -> IOP Number (0..1 for now)

; irRequestKind encodings
irSendXmtMessage	equ		0		; Send Transmit message, Read reply when done
irSendRcvReply		equ		1		; Send Receive reply, Wait for next Receive Message
irWaitRcvMessage	equ		2		; wait for Receive Message
irRemoveRcvWaiter	equ		3		; remove wait for receive message request

irRequestKind	ds.b	1			; [byte] -> kind of request to perform
irMsgNumber		ds.b	1			; [byte] -> Message number (1..7)
irMessageLen	ds.b	1			; [byte] -> Message Buffer Length (0..32)
irReplyLen		ds.b	1			; [byte] -> Reply Buffer Length (0..32)
irReqActive		ds.b	1			; [byte] <- $FF when request active or queued, $00 when complete
irMessagePtr	ds.l	1			; [long] -> Message Buffer Address
irReplyPtr		ds.l	1			; [long] -> Reply Buffer Address
irHandler		ds.l	1			; [long] -> Completion Routine Address

irReqInfoSize	equ		*			; size of IOPRequestInfo parameter block
				endr



IOPMoveInfo		record	0,increment	; parameter block for _IOPMoveData

; imCopyKind encodings
imIopToHost		equ		0			; move data from IOP memory to Host memory
imHostToIop		equ		1			; move data from Host memory to IOP memory
imCompare		equ		2			; compare data from Host memory and IOP memory
imPatchIop		equ		3			; patch IOP memory

imCopyKind		ds.b	1			; [byte] -> kind/direction of move
imIOPNumber		ds.b	1			; [byte] -> IOP Number (0..1 for now)
imByteCount		ds.w	1			; [word] -> number of bytes to move/compare (not used for PatchIop)
imHostAddr		ds.l	1			; [long] -> Host Buffer Address
imIopAddr		ds.w	1			; [word] -> IOP Buffer Address (not used for PatchIop)
imCompRel		ds.b	1			; [byte] <- -1 if IOP < HOST, 0 if IOP = HOST, 1 if IOP > HOST
				ds.b	1			; [byte]    unused, reserved.
imMoveInfoSize	equ		*			; size of IOPMoveInfo parameter block
				endr


IOPMsgEntry		record	0,increment	; Handlers for Xmt/Rcv messages
RcvMsgInfoPtr	ds.l	1			; [long] Ptr to receive message handler info
				ds.w	1			; [word] filler
XmtMsgQHdr		ds.b	qHeadSize	; [10 bytes] transmit message handler queue
IOPMsgEntrySize	equ		*-IOPMsgEntry	; size of IOPMsgEntry
				endr

IOPInfo			record	0,increment	; IOP information (1 per IOP)
IopAddrRegPtr	ds.l	1			; [long] Ptr to IOP RAM Address Reg (word)
IopDataRegPtr	ds.l	1			; [long] Ptr to IOP RAM Data Register (byte)
IopCtlRegPtr	ds.l	1			; [long[ Ptr to IOP Control Register (byte)
BypassHandler	ds.l	1			; [long] Ptr to Bypass Mode Interrupt handler
MaxXmt			ds.b	1			; [byte] Highest Transmit message number
MaxRcv			ds.b	1			; [byte] Highest Receive message number
				ds.b	2			; unused, reserved.

MoveReqInfo		ds		IOPRequestInfo	; request info for rcv message 1
MoveReqBuffer	ds		IOPMoveInfo		; message/reply buffer for rcv message 1

MsgTable		equ		*-IOPMsgEntry.IOPMsgEntrySize	; base for zero based indexing
Msg1Info		ds		IOPMsgEntry	; info for handling (xmt/rcv) message 1
Msg2Info		ds		IOPMsgEntry	; info for handling (xmt/rcv) message 2
Msg3Info		ds		IOPMsgEntry	; info for handling (xmt/rcv) message 3
Msg4Info		ds		IOPMsgEntry	; info for handling (xmt/rcv) message 4
Msg5Info		ds		IOPMsgEntry	; info for handling (xmt/rcv) message 5
Msg6Info		ds		IOPMsgEntry	; info for handling (xmt/rcv) message 6
Msg7Info		ds		IOPMsgEntry	; info for handling (xmt/rcv) message 7
IOPInfoSize		equ		*-IOPInfo	; size of IOPInfo record
				endr


IOPAccessInfo	record	0,increment	; parameter block for _IOPInfoAccess

; iaAccessKind encodings
iaInstallIOP	equ		0			; install IOPInfo and initialize Hardware and Data Structures
iaGetIOPInfo	equ		1			; return pointer to IOP Info for specified IOP
iaRemoveIOP		equ		2			; de-install IOPInfo for specified IOP

iaAccessKind	ds.b	1			; [byte] -> kind of request to perform
iaIOPNumber		ds.b	1			; [byte] -> IOP Number (0..1 for now)
				ds.b	2			; unused, reserved
iaIOPInfoPtr	ds.l	1			; [long] <-> Pointer to IOPInfo record
iaAccessInfoSize equ	*			; size of IOPAccessInfo parameter block
				endr


;================================================================================================
;
;	IOP SCC declarations
;

SCCCtlMsg		record	0,increment	; message block for SCC control of external clocking	<2>
msgNum			ds.b	1			; SCC IOP message number
Driver			ds.b	1			; SCC port port A = 0, port B = 1
GPI				ds.b	1			; state on GPi pin : 0 = internal, 1 = external clocking
				ds.b	1			; unused, reserved
SCCCtlMsgSize	equ		*
				endr

SCCCtlReply		record	0,increment	; reply block for SCC control of external clocking		<2>
errNum			ds.b	1			; error code
				ds.b	3			; unused, reserved
SCCCtlReplySize	equ		*
				endr

	ENDIF	; ...already included