patch-2.4.10 linux/drivers/scsi/53c700.scr

• Lines: 405
• Date: Sun Sep 9 10:50:48 2001
• Orig file: v2.4.9/linux/drivers/scsi/53c700.scr
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.9/linux/drivers/scsi/53c700.scr linux/drivers/scsi/53c700.scr
@@ -0,0 +1,404 @@
+; Script for the NCR (or symbios) 53c700 and 53c700-66 chip
+;
+; Copyright (C) 2001 James.Bottomley@HansenPartnership.com
+;;-----------------------------------------------------------------------------
+;;  
+;;  This program is free software; you can redistribute it and/or modify
+;;  it under the terms of the GNU General Public License as published by
+;;  the Free Software Foundation; either version 2 of the License, or
+;;  (at your option) any later version.
+;;
+;;  This program is distributed in the hope that it will be useful,
+;;  but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;  GNU General Public License for more details.
+;;
+;;  You should have received a copy of the GNU General Public License
+;;  along with this program; if not, write to the Free Software
+;;  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+;;
+;;-----------------------------------------------------------------------------
+;
+; This script is designed to be modified for the particular command in
+; operation.  The particular variables pertaining to the commands are:
+;
+ABSOLUTE	Device_ID = 0		; ID of target for command
+ABSOLUTE	MessageCount = 0	; Number of bytes in message
+ABSOLUTE	MessageLocation = 0	; Addr of message
+ABSOLUTE	CommandCount = 0	; Number of bytes in command
+ABSOLUTE	CommandAddress = 0	; Addr of Command
+ABSOLUTE	StatusAddress = 0	; Addr to receive status return
+ABSOLUTE	ReceiveMsgAddress = 0	; Addr to receive msg
+;
+; This is the magic component for handling scatter-gather.  Each of the
+; SG components is preceeded by a script fragment which moves the
+; necessary amount of data and jumps to the next SG segment.  The final
+; SG segment jumps back to .  However, this address is the first SG script
+; segment.
+;
+ABSOLUTE	SGScriptStartAddress = 0
+
+; The following represent status interrupts we use 3 hex digits for
+; this: 0xPRS where 
+
+; P:
+ABSOLUTE	AFTER_SELECTION 	= 0x100
+ABSOLUTE	BEFORE_CMD 		= 0x200
+ABSOLUTE	AFTER_CMD 		= 0x300
+ABSOLUTE	AFTER_STATUS 		= 0x400
+ABSOLUTE	AFTER_DATA_IN		= 0x500
+ABSOLUTE	AFTER_DATA_OUT		= 0x600
+ABSOLUTE	DURING_DATA_IN		= 0x700
+
+; R:
+ABSOLUTE	NOT_MSG_OUT 		= 0x10
+ABSOLUTE	UNEXPECTED_PHASE 	= 0x20
+ABSOLUTE	NOT_MSG_IN 		= 0x30
+ABSOLUTE	UNEXPECTED_MSG		= 0x40
+ABSOLUTE	MSG_IN			= 0x50
+ABSOLUTE	SDTR_MSG_R		= 0x60
+ABSOLUTE	REJECT_MSG_R		= 0x70
+ABSOLUTE	DISCONNECT		= 0x80
+ABSOLUTE	MSG_OUT			= 0x90
+ABSOLUTE	WDTR_MSG_R		= 0xA0
+
+; S:
+ABSOLUTE	GOOD_STATUS 		= 0x1
+
+; Combinations, since the script assembler can't process |
+ABSOLUTE	NOT_MSG_OUT_AFTER_SELECTION = 0x110
+ABSOLUTE	UNEXPECTED_PHASE_BEFORE_CMD = 0x220
+ABSOLUTE	UNEXPECTED_PHASE_AFTER_CMD = 0x320
+ABSOLUTE	NOT_MSG_IN_AFTER_STATUS = 0x430
+ABSOLUTE	GOOD_STATUS_AFTER_STATUS = 0x401
+ABSOLUTE	UNEXPECTED_PHASE_AFTER_DATA_IN = 0x520
+ABSOLUTE	UNEXPECTED_PHASE_AFTER_DATA_OUT = 0x620
+ABSOLUTE	UNEXPECTED_MSG_BEFORE_CMD = 0x240
+ABSOLUTE	MSG_IN_BEFORE_CMD = 0x250
+ABSOLUTE	MSG_IN_AFTER_CMD = 0x350
+ABSOLUTE	SDTR_MSG_BEFORE_CMD = 0x260
+ABSOLUTE	REJECT_MSG_BEFORE_CMD = 0x270
+ABSOLUTE	DISCONNECT_AFTER_CMD = 0x380
+ABSOLUTE	SDTR_MSG_AFTER_CMD = 0x360
+ABSOLUTE	WDTR_MSG_AFTER_CMD = 0x3A0
+ABSOLUTE	DISCONNECT_AFTER_DATA = 0x580
+ABSOLUTE	MSG_IN_AFTER_DATA_IN = 0x550
+ABSOLUTE	MSG_IN_AFTER_DATA_OUT = 0x650
+ABSOLUTE	MSG_OUT_AFTER_DATA_IN = 0x590
+ABSOLUTE	DATA_IN_AFTER_DATA_IN = 0x5a0
+ABSOLUTE	MSG_IN_DURING_DATA_IN = 0x750
+ABSOLUTE	DISCONNECT_DURING_DATA = 0x780
+
+;
+; Other interrupt conditions
+; 
+ABSOLUTE	RESELECTED_DURING_SELECTION = 0x1000
+ABSOLUTE	COMPLETED_SELECTION_AS_TARGET = 0x1001
+ABSOLUTE	RESELECTION_IDENTIFIED = 0x1003
+;
+; Fatal interrupt conditions.  If you add to this, also add to the
+; array of corresponding messages
+;
+ABSOLUTE	FATAL = 0x2000
+ABSOLUTE	FATAL_UNEXPECTED_RESELECTION_MSG = 0x2000
+ABSOLUTE	FATAL_SEND_MSG = 0x2001
+ABSOLUTE	FATAL_NOT_MSG_IN_AFTER_SELECTION = 0x2002
+ABSOLUTE	FATAL_ILLEGAL_MSG_LENGTH = 0x2003
+
+ABSOLUTE	DEBUG_INTERRUPT	= 0x3000
+ABSOLUTE	DEBUG_INTERRUPT1 = 0x3001
+ABSOLUTE	DEBUG_INTERRUPT2 = 0x3002
+ABSOLUTE	DEBUG_INTERRUPT3 = 0x3003
+ABSOLUTE	DEBUG_INTERRUPT4 = 0x3004
+ABSOLUTE	DEBUG_INTERRUPT5 = 0x3005
+ABSOLUTE	DEBUG_INTERRUPT6 = 0x3006
+
+
+;
+; SCSI Messages we interpret in the script
+; 
+ABSOLUTE	EXTENDED_MSG		= 0x01
+ABSOLUTE	SDTR_MSG		= 0x01
+ABSOLUTE	SAVE_DATA_PTRS_MSG	= 0x02
+ABSOLUTE	RESTORE_DATA_PTRS_MSG	= 0x03
+ABSOLUTE	WDTR_MSG		= 0x03
+ABSOLUTE	DISCONNECT_MSG		= 0x04
+ABSOLUTE	REJECT_MSG		= 0x07
+ABSOLUTE	PARITY_ERROR_MSG	= 0x09
+ABSOLUTE	SIMPLE_TAG_MSG		= 0x20
+ABSOLUTE	IDENTIFY_MSG		= 0x80
+ABSOLUTE	IDENTIFY_MSG_MASK	= 0x7F
+ABSOLUTE	TWO_BYTE_MSG		= 0x20
+ABSOLUTE	TWO_BYTE_MSG_MASK	= 0x0F
+
+; This is where the script begins
+
+ENTRY	StartUp
+
+StartUp:
+	SELECT	ATN Device_ID, Reselect
+	JUMP	Finish, WHEN STATUS
+	JUMP	SendIdentifyMsg, IF MSG_OUT
+	INT	NOT_MSG_OUT_AFTER_SELECTION
+
+Reselect:
+	WAIT	RESELECT SelectedAsTarget
+	INT	RESELECTED_DURING_SELECTION, WHEN MSG_IN
+	INT	FATAL_NOT_MSG_IN_AFTER_SELECTION
+
+	ENTRY	GetReselectionData
+GetReselectionData:
+	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN
+	INT	RESELECTION_IDENTIFIED
+
+	ENTRY	GetReselectionWithTag
+GetReselectionWithTag:
+	MOVE	3, ReceiveMsgAddress, WHEN MSG_IN
+	INT	RESELECTION_IDENTIFIED
+	
+	ENTRY	SelectedAsTarget
+SelectedAsTarget:
+; Basically tell the selecting device that there's nothing here
+	SET	TARGET
+	DISCONNECT
+	CLEAR	TARGET
+	INT	COMPLETED_SELECTION_AS_TARGET
+;
+; These are the messaging entries
+;
+; Send a message.  Message count should be correctly patched
+	ENTRY	SendMessage
+SendMessage:
+	MOVE	MessageCount, MessageLocation, WHEN MSG_OUT
+ResumeSendMessage:
+	RETURN,	WHEN NOT MSG_OUT
+	INT	FATAL_SEND_MSG
+
+	ENTRY	SendMessagePhaseMismatch
+SendMessagePhaseMismatch:
+	CLEAR	ACK
+	JUMP	ResumeSendMessage
+;
+; Receive a message.  Need to identify the message to
+; receive it correctly
+	ENTRY	ReceiveMessage
+ReceiveMessage:
+	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN
+;
+; Use this entry if we've just tried to look at the first byte
+; of the message and want to process it further
+ProcessReceiveMessage:
+	JUMP	ReceiveExtendedMessage, IF EXTENDED_MSG
+	RETURN,	IF NOT TWO_BYTE_MSG, AND MASK TWO_BYTE_MSG_MASK
+	CLEAR	ACK
+	MOVE	1, ReceiveMsgAddress + 1, WHEN MSG_IN
+	RETURN
+ReceiveExtendedMessage:
+	CLEAR	ACK
+	MOVE	1, ReceiveMsgAddress + 1, WHEN MSG_IN
+	JUMP	Receive1Byte, IF 0x01
+	JUMP	Receive2Byte, IF 0x02
+	JUMP	Receive3Byte, IF 0x03
+	JUMP	Receive4Byte, IF 0x04
+	JUMP	Receive5Byte, IF 0x05
+	INT	FATAL_ILLEGAL_MSG_LENGTH
+Receive1Byte:
+	CLEAR	ACK
+	MOVE	1, ReceiveMsgAddress + 2, WHEN MSG_IN
+	RETURN
+Receive2Byte:
+	CLEAR	ACK
+	MOVE	2, ReceiveMsgAddress + 2, WHEN MSG_IN
+	RETURN
+Receive3Byte:
+	CLEAR	ACK
+	MOVE	3, ReceiveMsgAddress + 2, WHEN MSG_IN
+	RETURN
+Receive4Byte:
+	CLEAR	ACK
+	MOVE	4, ReceiveMsgAddress + 2, WHEN MSG_IN
+	RETURN
+Receive5Byte:
+	CLEAR	ACK
+	MOVE	5, ReceiveMsgAddress + 2, WHEN MSG_IN
+	RETURN
+;
+; Come here from the message processor to ignore the message
+;
+	ENTRY	IgnoreMessage
+IgnoreMessage:
+	CLEAR	ACK
+	RETURN
+;
+; Come here to send a reply to a message
+;
+	ENTRY	SendMessageWithATN
+SendMessageWithATN:
+	SET	ATN
+	CLEAR	ACK
+	JUMP	SendMessage
+
+SendIdentifyMsg:
+	CALL	SendMessage
+	JUMP	SendCommand
+
+IgnoreMsgBeforeCommand:
+	CLEAR	ACK
+	ENTRY	SendCommand
+SendCommand:
+	JUMP	Finish, WHEN STATUS
+	JUMP	MsgInBeforeCommand, IF MSG_IN
+	INT	UNEXPECTED_PHASE_BEFORE_CMD, IF NOT CMD
+	MOVE	CommandCount, CommandAddress, WHEN CMD
+ResumeSendCommand:
+	JUMP	Finish, WHEN STATUS
+	JUMP	MsgInAfterCmd, IF MSG_IN
+	JUMP	DataIn, IF DATA_IN
+	JUMP	DataOut, IF DATA_OUT
+	INT	UNEXPECTED_PHASE_AFTER_CMD
+
+IgnoreMsgDuringData:
+	CLEAR	ACK
+	; fall through to MsgInDuringData
+
+Entry MsgInDuringData
+MsgInDuringData:
+;
+; Could be we have nothing more to transfer
+;
+	JUMP	Finish, WHEN STATUS
+	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN
+	JUMP	DisconnectDuringDataIn, IF DISCONNECT_MSG
+	JUMP	IgnoreMsgDuringData, IF SAVE_DATA_PTRS_MSG
+	JUMP	IgnoreMsgDuringData, IF RESTORE_DATA_PTRS_MSG
+	INT	MSG_IN_DURING_DATA_IN
+
+MsgInAfterCmd:
+	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN
+	JUMP	DisconnectAfterCmd, IF DISCONNECT_MSG
+	JUMP	IgnoreMsgInAfterCmd, IF SAVE_DATA_PTRS_MSG
+	JUMP	IgnoreMsgInAfterCmd, IF RESTORE_DATA_PTRS_MSG
+	CALL	ProcessReceiveMessage
+	INT	MSG_IN_AFTER_CMD
+	CLEAR	ACK
+	JUMP	ResumeSendCommand
+
+IgnoreMsgInAfterCmd:
+	CLEAR	ACK
+	JUMP	ResumeSendCommand
+
+DisconnectAfterCmd:
+	CLEAR	ACK
+	WAIT	DISCONNECT
+	ENTRY	Disconnect1
+Disconnect1:
+	INT	DISCONNECT_AFTER_CMD
+	ENTRY	Disconnect2
+Disconnect2:
+; We return here after a reselection
+	CLEAR	ACK
+	JUMP	ResumeSendCommand
+
+MsgInBeforeCommand:
+	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN
+	JUMP	IgnoreMsgBeforeCommand, IF SAVE_DATA_PTRS_MSG
+	JUMP	IgnoreMsgBeforeCommand, IF RESTORE_DATA_PTRS_MSG
+	CALL	ProcessReceiveMessage
+	INT	MSG_IN_BEFORE_CMD
+	CLEAR	ACK
+	JUMP	SendCommand
+
+DataIn:
+	CALL	SGScriptStartAddress
+ResumeDataIn:
+	JUMP	Finish, WHEN STATUS
+	JUMP	MsgInAfterDataIn, IF MSG_IN
+	JUMP	DataInAfterDataIn, if DATA_IN
+	INT	MSG_OUT_AFTER_DATA_IN, if MSG_OUT
+	INT	UNEXPECTED_PHASE_AFTER_DATA_IN
+
+DataInAfterDataIn:
+	INT	DATA_IN_AFTER_DATA_IN
+	JUMP	ResumeDataIn
+
+DataOut:
+	CALL	SGScriptStartAddress
+ResumeDataOut:
+	JUMP	Finish, WHEN STATUS
+	JUMP	MsgInAfterDataOut, IF MSG_IN
+	INT	UNEXPECTED_PHASE_AFTER_DATA_OUT
+
+MsgInAfterDataIn:
+	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN
+	JUMP	DisconnectAfterDataIn, IF DISCONNECT_MSG
+	JUMP	IgnoreMsgAfterData, IF SAVE_DATA_PTRS_MSG
+	JUMP	IgnoreMsgAfterData, IF RESTORE_DATA_PTRS_MSG
+	CALL	ProcessReceiveMessage
+	INT	MSG_IN_AFTER_DATA_IN
+	CLEAR	ACK
+	JUMP	ResumeDataIn
+
+DisconnectDuringDataIn:
+	CLEAR	ACK
+	WAIT	DISCONNECT
+	ENTRY	Disconnect3
+Disconnect3:
+	INT	DISCONNECT_DURING_DATA
+	ENTRY	Disconnect4
+Disconnect4:
+; we return here after a reselection
+	CLEAR	ACK
+	JUMP	ResumeSendCommand
+
+
+DisconnectAfterDataIn:
+	CLEAR	ACK
+	WAIT	DISCONNECT
+	ENTRY	Disconnect5
+Disconnect5:
+	INT	DISCONNECT_AFTER_DATA
+	ENTRY	Disconnect6
+Disconnect6:
+; we return here after a reselection
+	CLEAR	ACK
+	JUMP	ResumeDataIn
+
+MsgInAfterDataOut:
+	MOVE	1, ReceiveMsgAddress, WHEN MSG_IN
+	JUMP	DisconnectAfterDataOut, if DISCONNECT_MSG
+	JUMP	IgnoreMsgAfterData, IF SAVE_DATA_PTRS_MSG
+	JUMP	IgnoreMsgAfterData, IF RESTORE_DATA_PTRS_MSG
+	CALL	ProcessReceiveMessage
+	INT	MSG_IN_AFTER_DATA_OUT
+	CLEAR	ACK
+	JUMP	ResumeDataOut
+
+IgnoreMsgAfterData:
+	CLEAR	ACK
+; Data in and out do the same thing on resume, so pick one
+	JUMP	ResumeDataIn
+
+DisconnectAfterDataOut:
+	CLEAR	ACK
+	WAIT	DISCONNECT
+	ENTRY	Disconnect7
+Disconnect7:
+	INT	DISCONNECT_AFTER_DATA
+	ENTRY	Disconnect8
+Disconnect8:
+; we return here after a reselection
+	CLEAR	ACK
+	JUMP	ResumeDataOut
+
+Finish:
+	MOVE	1, StatusAddress, WHEN STATUS
+	INT	NOT_MSG_IN_AFTER_STATUS, WHEN NOT MSG_IN
+	CALL	ReceiveMessage
+	CLEAR	ACK
+	WAIT	DISCONNECT
+	ENTRY	Finish1
+Finish1:
+	INT	GOOD_STATUS_AFTER_STATUS
+	ENTRY	Finish2
+Finish2:
+