parisc/kernel/perf_asm.S

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 /*    low-level asm for "intrigue" (PA8500-8700 CPU perf counters)
5  *    Copyright (C) 2001 Randolph Chung <tausq at parisc-linux.org>
6  *    Copyright (C) 2001 Hewlett-Packard (Grant Grundler)
30 ; The coprocessor only needs to be enabled when
45 	ssm     0,0                     ; dummy op to ensure completion
71 	ssm     0,0                     ; dummy op to ensure completion
86 ;*	is shifted shifted backup immediately.  This is to compensate
91 ;*	arg0 : rdr to be read
98 ;*	arg0 : rdr to be read
100 ;*	%r24  - original DR2 value
101 ;*	%r1   - scratch
102 ;*  %r29  - scratch
117 ; NOTE: The PCX-W ERS states that DR2_SLOW_RET must be set before any
118 ; shifting is done, from or to, remote diagnose registers.
132 ; Cacheline start (32-byte cacheline)
137 	extrd,u		arg1,63,6,%r1	; setup shift amount by bits to move
141 	blr  		%r1,%r0		; branch to 8-instruction sequence
145 ; Cacheline start (32-byte cacheline)
549 ;*	This routine moves data to the RDR's.  The double-word that
550 ;*	arg1 points to is loaded and moved into the staging register.
552 ;*	to move the data to the RDR.
556 ;*	arg1 = 64-bit value to write
557 ;*	%r24 - DR2 | DR2_SLOW_RET
558 ;*	%r23 - original DR2 value
572 ; NOTE: The PCX-W ERS states that DR2_SLOW_RET must be set before any
573 ; shifting is done, from or to, the remote diagnose registers.
580 	MTDIAG_1	(25)		; data to the staging register
582 	blr		    %r1,%r0	; branch to 8-instruction sequence
586 	; RDR 0 write sequence
588 	sync				; RDR 0 write sequence
598 	; RDR 1 write sequence
610 	; RDR 2 write sequence
622 	; RDR 3 write sequence
634 	; RDR 4 write sequence
646 	; RDR 5 write sequence
658 	; RDR 6 write sequence
670 	; RDR 7 write sequence
682 	; RDR 8 write sequence
694 	; RDR 9 write sequence
706 	; RDR 10 write sequence
718 	; RDR 11 write sequence
730 	; RDR 12 write sequence
742 	; RDR 13 write sequence
754 	; RDR 14 write sequence
766 	; RDR 15 write sequence
778 	; RDR 16 write sequence
790 	; RDR 17 write sequence
802 	; RDR 18 write sequence
814 	; RDR 19 write sequence
826 	; RDR 20 write sequence
838 	; RDR 21 write sequence
850 	; RDR 22 write sequence
862 	; RDR 23 write sequence
874 	; RDR 24 write sequence
886 	; RDR 25 write sequence
898 	; RDR 26 write sequence
910 	; RDR 27 write sequence
922 	; RDR 28 write sequence
934 	; RDR 29 write sequence
946 	; RDR 30 write sequence
958 	; RDR 31 write sequence
984 ;*	is shifted shifted backup immediately.  This is to compensate
989 ;*	arg0 : rdr to be read
996 ;*	arg0 : rdr to be read
998 ;*	%r24 - original DR2 value
999 ;*	%r23 - DR2 | DR2_SLOW_RET
1000 ;*	%r1  - scratch
1011 ; NOTE: The PCX-U ERS states that DR2_SLOW_RET must be set before any
1012 ; shifting is done, from or to, remote diagnose registers.
1025 ; Start of next 32-byte cacheline
1034 	blr 		%r1,%r0		; branch to 8-instruction sequence
1038 ; Start of next 32-byte cacheline
1341 ;*	This routine moves data to the RDR's.  The double-word that
1342 ;*	arg1 points to is loaded and moved into the staging register.
1344 ;*	to move the data to the RDR.
1356 ;*	%r24 - DR2 | DR2_SLOW_RET
1357 ;*	%r23 - original DR2 value
1367 ; NOTE: The PCX-U ERS states that DR2_SLOW_RET must be set before any
1368 ; shifting is done, from or to, the remote diagnose registers.
1376 	MTDIAG_1	(25)		; data to the staging register
1378 	blr		%r1,%r0		; branch to 8-instruction sequence
1382 ; 32-byte cachline aligned
1385 	sync				; RDR 0 write sequence
1394 	sync				; RDR 1 write sequence
1403 	sync				; RDR 2 write sequence
1412 	sync				; RDR 3 write sequence
1421 	sync				; RDR 4 write sequence
1430 	sync				; RDR 5 write sequence
1439 	sync				; RDR 6 write sequence
1448 	sync				; RDR 7 write sequence
1457 	sync				; RDR 8 write sequence
1466 	sync				; RDR 9 write sequence
1475 	sync				; RDR 10 write sequence
1484 	sync				; RDR 11 write sequence
1493 	sync				; RDR 12 write sequence
1502 	sync				; RDR 13 write sequence
1511 	sync				; RDR 14 write sequence
1520 	sync				; RDR 15 write sequence
1529 	sync				; RDR 16 write sequence
1538 	sync				; RDR 17 write sequence
1547 	sync				; RDR 18 write sequence
1556 	sync				; RDR 19 write sequence
1565 	sync				; RDR 20 write sequence
1574 	sync				; RDR 21 write sequence
1583 	sync				; RDR 22 write sequence
1592 	sync				; RDR 23 write sequence
1601 	sync				; RDR 24 write sequence
1610 	sync				; RDR 25 write sequence
1619 	sync				; RDR 26 write sequence
1628 	sync				; RDR 27 write sequence
1637 	sync				; RDR 28 write sequence
1646 	sync				; RDR 29 write sequence
1655 	sync				; RDR 30 write sequence
1664 	sync				; RDR 31 write sequence