ncr53c8xx.c

linux和2410结合开发 用他可以生成2410所需的zImage文件

}/*------------------------< DONE_POS >---------------------*/,{
		PADDRH (done_queue),
}/*------------------------< DONE_PLUG >--------------------*/,{
	SCR_INT,
		SIR_DONE_OVERFLOW,
}/*------------------------< DONE_END >---------------------*/,{
	SCR_INT_FLY,
		0,
	SCR_COPY (4),
		RADDR (temp),
		PADDR (done_pos),
	SCR_JUMP,
		PADDR (start),

#endif	/* SCSI_NCR_CCB_DONE_SUPPORT */

}/*-------------------------< SAVE_DP >------------------*/,{
	/*
	**	SAVE_DP message:
	**	Copy TEMP register to SAVEP in header.
	*/
	SCR_COPY (4),
		RADDR (temp),
		NADDR (header.savep),
	SCR_CLR (SCR_ACK),
		0,
	SCR_JUMP,
		PADDR (dispatch),
}/*-------------------------< RESTORE_DP >---------------*/,{
	/*
	**	RESTORE_DP message:
	**	Copy SAVEP in header to TEMP register.
	*/
	SCR_COPY (4),
		NADDR (header.savep),
		RADDR (temp),
	SCR_JUMP,
		PADDR (clrack),

}/*-------------------------< DISCONNECT >---------------*/,{
	/*
	**	DISCONNECTing  ...
	**
	**	disable the "unexpected disconnect" feature,
	**	and remove the ACK signal.
	*/
	SCR_REG_REG (scntl2, SCR_AND, 0x7f),
		0,
	SCR_CLR (SCR_ACK|SCR_ATN),
		0,
	/*
	**	Wait for the disconnect.
	*/
	SCR_WAIT_DISC,
		0,
	/*
	**	Status is: DISCONNECTED.
	*/
	SCR_LOAD_REG (HS_REG, HS_DISCONNECT),
		0,
	/*
	**	If QUIRK_AUTOSAVE is set,
	**	do an "save pointer" operation.
	*/
	SCR_FROM_REG (QU_REG),
		0,
	SCR_JUMP ^ IFFALSE (MASK (QUIRK_AUTOSAVE, QUIRK_AUTOSAVE)),
		PADDR (cleanup_ok),
	/*
	**	like SAVE_DP message:
	**	Copy TEMP register to SAVEP in header.
	*/
	SCR_COPY (4),
		RADDR (temp),
		NADDR (header.savep),
	SCR_JUMP,
		PADDR (cleanup_ok),

}/*-------------------------< MSG_OUT >-------------------*/,{
	/*
	**	The target requests a message.
	*/
	SCR_MOVE_ABS (1) ^ SCR_MSG_OUT,
		NADDR (msgout),
	SCR_COPY (1),
		NADDR (msgout),
		NADDR (lastmsg),
	/*
	**	If it was no ABORT message ...
	*/
	SCR_JUMP ^ IFTRUE (DATA (M_ABORT)),
		PADDRH (msg_out_abort),
	/*
	**	... wait for the next phase
	**	if it's a message out, send it again, ...
	*/
	SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_OUT)),
		PADDR (msg_out),
}/*-------------------------< MSG_OUT_DONE >--------------*/,{
	/*
	**	... else clear the message ...
	*/
	SCR_LOAD_REG (scratcha, M_NOOP),
		0,
	SCR_COPY (4),
		RADDR (scratcha),
		NADDR (msgout),
	/*
	**	... and process the next phase
	*/
	SCR_JUMP,
		PADDR (dispatch),
}/*-------------------------< IDLE >------------------------*/,{
	/*
	**	Nothing to do?
	**	Wait for reselect.
	**	This NOP will be patched with LED OFF
	**	SCR_REG_REG (gpreg, SCR_OR, 0x01)
	*/
	SCR_NO_OP,
		0,
}/*-------------------------< RESELECT >--------------------*/,{
	/*
	**	make the DSA invalid.
	*/
	SCR_LOAD_REG (dsa, 0xff),
		0,
	SCR_CLR (SCR_TRG),
		0,
	SCR_LOAD_REG (HS_REG, HS_IN_RESELECT),
		0,
	/*
	**	Sleep waiting for a reselection.
	**	If SIGP is set, special treatment.
	**
	**	Zu allem bereit ..
	*/
	SCR_WAIT_RESEL,
		PADDR(start),
}/*-------------------------< RESELECTED >------------------*/,{
	/*
	**	This NOP will be patched with LED ON
	**	SCR_REG_REG (gpreg, SCR_AND, 0xfe)
	*/
	SCR_NO_OP,
		0,
	/*
	**	... zu nichts zu gebrauchen ?
	**
	**      load the target id into the SFBR
	**	and jump to the control block.
	**
	**	Look at the declarations of
	**	- struct ncb
	**	- struct tcb
	**	- struct lcb
	**	- struct ccb
	**	to understand what's going on.
	*/
	SCR_REG_SFBR (ssid, SCR_AND, 0x8F),
		0,
	SCR_TO_REG (sdid),
		0,
	SCR_JUMP,
		NADDR (jump_tcb),

}/*-------------------------< RESEL_DSA >-------------------*/,{
	/*
	**	Ack the IDENTIFY or TAG previously received.
	*/
	SCR_CLR (SCR_ACK),
		0,
	/*
	**      The ncr doesn't have an indirect load
	**	or store command. So we have to
	**	copy part of the control block to a
	**	fixed place, where we can access it.
	**
	**	We patch the address part of a
	**	COPY command with the DSA-register.
	*/
	SCR_COPY_F (4),
		RADDR (dsa),
		PADDR (loadpos1),
	/*
	**	then we do the actual copy.
	*/
	SCR_COPY (sizeof (struct head)),
	/*
	**	continued after the next label ...
	*/

}/*-------------------------< LOADPOS1 >-------------------*/,{
		0,
		NADDR (header),
	/*
	**	The DSA contains the data structure address.
	*/
	SCR_JUMP,
		PADDR (prepare),

}/*-------------------------< RESEL_LUN >-------------------*/,{
	/*
	**	come back to this point
	**	to get an IDENTIFY message
	**	Wait for a msg_in phase.
	*/
	SCR_INT ^ IFFALSE (WHEN (SCR_MSG_IN)),
		SIR_RESEL_NO_MSG_IN,
	/*
	**	message phase.
	**	Read the data directly from the BUS DATA lines.
	**	This helps to support very old SCSI devices that 
	**	may reselect without sending an IDENTIFY.
	*/
	SCR_FROM_REG (sbdl),
		0,
	/*
	**	It should be an Identify message.
	*/
	SCR_RETURN,
		0,
}/*-------------------------< RESEL_TAG >-------------------*/,{
	/*
	**	Read IDENTIFY + SIMPLE + TAG using a single MOVE.
	**	Agressive optimization, is'nt it?
	**	No need to test the SIMPLE TAG message, since the 
	**	driver only supports conformant devices for tags. ;-)
	*/
	SCR_MOVE_ABS (3) ^ SCR_MSG_IN,
		NADDR (msgin),
	/*
	**	Read the TAG from the SIDL.
	**	Still an aggressive optimization. ;-)
	**	Compute the CCB indirect jump address which 
	**	is (#TAG*2 & 0xfc) due to tag numbering using 
	**	1,3,5..MAXTAGS*2+1 actual values.
	*/
	SCR_REG_SFBR (sidl, SCR_SHL, 0),
		0,
	SCR_SFBR_REG (temp, SCR_AND, 0xfc),
		0,
}/*-------------------------< JUMP_TO_NEXUS >-------------------*/,{
	SCR_COPY_F (4),
		RADDR (temp),
		PADDR (nexus_indirect),
	SCR_COPY (4),
}/*-------------------------< NEXUS_INDIRECT >-------------------*/,{
		0,
		RADDR (temp),
	SCR_RETURN,
		0,
}/*-------------------------< RESEL_NOTAG >-------------------*/,{
	/*
	**	No tag expected.
	**	Read an throw away the IDENTIFY.
	*/
	SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
		NADDR (msgin),
	SCR_JUMP,
		PADDR (jump_to_nexus),
}/*-------------------------< DATA_IN >--------------------*/,{
/*
**	Because the size depends on the
**	#define MAX_SCATTERL parameter,
**	it is filled in at runtime.
**
**  ##===========< i=0; i<MAX_SCATTERL >=========
**  ||	SCR_CALL ^ IFFALSE (WHEN (SCR_DATA_IN)),
**  ||		PADDR (dispatch),
**  ||	SCR_MOVE_TBL ^ SCR_DATA_IN,
**  ||		offsetof (struct dsb, data[ i]),
**  ##==========================================
**
**---------------------------------------------------------
*/
0
}/*-------------------------< DATA_IN2 >-------------------*/,{
	SCR_CALL,
		PADDR (dispatch),
	SCR_JUMP,
		PADDR (no_data),
}/*-------------------------< DATA_OUT >--------------------*/,{
/*
**	Because the size depends on the
**	#define MAX_SCATTERL parameter,
**	it is filled in at runtime.
**
**  ##===========< i=0; i<MAX_SCATTERL >=========
**  ||	SCR_CALL ^ IFFALSE (WHEN (SCR_DATA_OUT)),
**  ||		PADDR (dispatch),
**  ||	SCR_MOVE_TBL ^ SCR_DATA_OUT,
**  ||		offsetof (struct dsb, data[ i]),
**  ##==========================================
**
**---------------------------------------------------------
*/
0
}/*-------------------------< DATA_OUT2 >-------------------*/,{
	SCR_CALL,
		PADDR (dispatch),
	SCR_JUMP,
		PADDR (no_data),
}/*--------------------------------------------------------*/
};

static	struct scripth scripth0 __initdata = {
/*-------------------------< TRYLOOP >---------------------*/{
/*
**	Start the next entry.
**	Called addresses point to the launch script in the CCB.
**	They are patched by the main processor.
**
**	Because the size depends on the
**	#define MAX_START parameter, it is filled
**	in at runtime.
**
**-----------------------------------------------------------
**
**  ##===========< I=0; i<MAX_START >===========
**  ||	SCR_CALL,
**  ||		PADDR (idle),
**  ##==========================================
**
**-----------------------------------------------------------
*/
0
}/*------------------------< TRYLOOP2 >---------------------*/,{
	SCR_JUMP,
		PADDRH(tryloop),

#ifdef SCSI_NCR_CCB_DONE_SUPPORT

}/*------------------------< DONE_QUEUE >-------------------*/,{
/*
**	Copy the CCB address to the next done entry.
**	Because the size depends on the
**	#define MAX_DONE parameter, it is filled
**	in at runtime.
**
**-----------------------------------------------------------
**
**  ##===========< I=0; i<MAX_DONE >===========
**  ||	SCR_COPY (sizeof(ccb_p)),
**  ||		NADDR (header.cp),
**  ||		NADDR (ccb_done[i]),
**  ||	SCR_CALL,
**  ||		PADDR (done_end),
**  ##==========================================
**
**-----------------------------------------------------------
*/
0
}/*------------------------< DONE_QUEUE2 >------------------*/,{
	SCR_JUMP,
		PADDRH (done_queue),

#endif /* SCSI_NCR_CCB_DONE_SUPPORT */
}/*------------------------< SELECT_NO_ATN >-----------------*/,{
	/*
	**	Set Initiator mode.
	**      And try to select this target without ATN.
	*/

	SCR_CLR (SCR_TRG),
		0,
	SCR_LOAD_REG (HS_REG, HS_SELECTING),
		0,
	SCR_SEL_TBL ^ offsetof (struct dsb, select),
		PADDR (reselect),
	SCR_JUMP,
		PADDR (select2),

}/*-------------------------< CANCEL >------------------------*/,{

	SCR_LOAD_REG (scratcha, HS_ABORTED),
		0,
	SCR_JUMPR,
		8,
}/*-------------------------< SKIP >------------------------*/,{
	SCR_LOAD_REG (scratcha, 0),
		0,
	/*
	**	This entry has been canceled.
	**	Next time use the next slot.
	*/
	SCR_COPY (4),
		RADDR (temp),
		PADDR (startpos),
	/*
	**      The ncr doesn't have an indirect load
	**	or store command. So we have to
	**	copy part of the control block to a
	**	fixed place, where we can access it.
	**
	**	We patch the address part of a
	**	COPY command with the DSA-register.
	*/
	SCR_COPY_F (4),
		RADDR (dsa),
		PADDRH (skip2),
	/*
	**	then we do the actual copy.
	*/
	SCR_COPY (sizeof (struct head)),
	/*
	**	continued after the next label ...
	*/
}/*-------------------------< SKIP2 >---------------------*/,{
		0,
		NADDR (header),
	/*
	**      Initialize the status registers
	*/
	SCR_COPY (4),
		NADDR (header.status),
		RADDR (scr0),
	/*
	**	Force host status.
	*/
	SCR_FROM_REG (scratcha),
		0,
	SCR_JUMPR ^ IFFALSE (MASK (0, HS_DONEMASK)),
		16,
	SCR_REG_REG (HS_REG, SCR_OR, HS_SKIPMASK),
		0,
	SCR_JUMPR,
		8,
	SCR_TO_REG (HS_REG),
		0,
	SCR_LOAD_REG (SS_REG, S_GOOD),
		0,
	SCR_JUMP,
		PADDR (cleanup_ok),

},/*-------------------------< PAR_ERR_DATA_IN >---------------*/{
	/*
	**	Ignore all data in byte, until next phase
	*/
	SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN)),
		PADDRH (par_err_other),
	SCR_MOVE_ABS (1) ^ SCR_DATA_IN,
		NADDR (scratch),
	SCR_JUMPR,
		-24,
},/*-------------------------< PAR_ERR_OTHER >------------------*/{
	/*
	**	count it.
	*/
	SCR_REG_REG (PS_REG, SCR_ADD, 0x01),
		0,
	/*
	**	jump to dispatcher.
	*/
	SCR_JUMP,
		PADDR (dispatch),
}/*-------------------------< MSG_REJECT >---------------*/,{
	/*
	**	If a negotiation was in progress,
	**	negotiation failed.
	**	Otherwise, let the C code print 
	**	some message.
	*/
	SCR_FROM_REG (HS_REG),
		0,
	SCR_INT ^ IFFALSE (DATA (HS_N