xref: /openbmc/linux/arch/parisc/kernel/perf_asm.S (revision adb57164) 
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2
3/*    low-level asm for "intrigue" (PA8500-8700 CPU perf counters)
4 *
5 *    Copyright (C) 2001 Randolph Chung <tausq at parisc-linux.org>
6 *    Copyright (C) 2001 Hewlett-Packard (Grant Grundler)
7 */
8
9#include <asm/assembly.h>
10
11#include <linux/init.h>
12#include <linux/linkage.h>
13
14#ifdef CONFIG_64BIT
15	.level		2.0w
16#endif /* CONFIG_64BIT */
17
18#define MTDIAG_1(gr)    .word 0x14201840 + gr*0x10000
19#define MTDIAG_2(gr)    .word 0x14401840 + gr*0x10000
20#define MFDIAG_1(gr)    .word 0x142008A0 + gr
21#define MFDIAG_2(gr)    .word 0x144008A0 + gr
22#define STDIAG(dr)      .word 0x14000AA0 + dr*0x200000
23#define SFDIAG(dr)      .word 0x14000BA0 + dr*0x200000
24#define DR2_SLOW_RET    53
25
26
27;
28; Enable the performance counters
29;
30; The coprocessor only needs to be enabled when
31; starting/stopping the coprocessor with the pmenb/pmdis.
32;
33	.text
34
35ENTRY(perf_intrigue_enable_perf_counters)
36	.proc
37	.callinfo  frame=0,NO_CALLS
38	.entry
39
40	ldi     0x20,%r25                ; load up perfmon bit
41	mfctl   ccr,%r26                 ; get coprocessor register
42	or      %r25,%r26,%r26             ; set bit
43	mtctl   %r26,ccr                 ; turn on performance coprocessor
44	pmenb                           ; enable performance monitor
45	ssm     0,0                     ; dummy op to ensure completion
46	sync                            ; follow ERS
47	andcm   %r26,%r25,%r26             ; clear bit now
48	mtctl   %r26,ccr                 ; turn off performance coprocessor
49	nop                             ; NOPs as specified in ERS
50	nop
51	nop
52	nop
53	nop
54	nop
55	nop
56	bve    (%r2)
57	nop
58	.exit
59	.procend
60ENDPROC(perf_intrigue_enable_perf_counters)
61
62ENTRY(perf_intrigue_disable_perf_counters)
63	.proc
64	.callinfo  frame=0,NO_CALLS
65	.entry
66	ldi     0x20,%r25                ; load up perfmon bit
67	mfctl   ccr,%r26                 ; get coprocessor register
68	or      %r25,%r26,%r26             ; set bit
69	mtctl   %r26,ccr                 ; turn on performance coprocessor
70	pmdis                           ; disable performance monitor
71	ssm     0,0                     ; dummy op to ensure completion
72	andcm   %r26,%r25,%r26             ; clear bit now
73	bve    (%r2)
74	mtctl   %r26,ccr                 ; turn off performance coprocessor
75	.exit
76	.procend
77ENDPROC(perf_intrigue_disable_perf_counters)
78
79;***********************************************************************
80;*
81;* Name: perf_rdr_shift_in_W
82;*
83;* Description:
84;*	This routine shifts data in from the RDR in arg0 and returns
85;*	the result in ret0.  If the RDR is <= 64 bits in length, it
86;*	is shifted shifted backup immediately.  This is to compensate
87;*	for RDR10 which has bits that preclude PDC stack operations
88;*	when they are in the wrong state.
89;*
90;* Arguments:
91;*	arg0 : rdr to be read
92;*	arg1 : bit length of rdr
93;*
94;* Returns:
95;*	ret0 = next 64 bits of rdr data from staging register
96;*
97;* Register usage:
98;*	arg0 : rdr to be read
99;*	arg1 : bit length of rdr
100;*	%r24  - original DR2 value
101;*	%r1   - scratch
102;*  %r29  - scratch
103;*
104;* Returns:
105;*	ret0 = RDR data (right justified)
106;*
107;***********************************************************************
108
109ENTRY(perf_rdr_shift_in_W)
110	.proc
111	.callinfo frame=0,NO_CALLS
112	.entry
113;
114; read(shift in) the RDR.
115;
116
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.
119;
120
121	depdi,z		1,DR2_SLOW_RET,1,%r29
122	MFDIAG_2	(24)
123	or		    %r24,%r29,%r29
124	MTDIAG_2	(29)			; set DR2_SLOW_RET
125
126	nop
127	nop
128	nop
129	nop
130
131;
132; Cacheline start (32-byte cacheline)
133;
134	nop
135	nop
136	nop
137	extrd,u		arg1,63,6,%r1	; setup shift amount by bits to move
138
139	mtsar		%r1
140	shladd		arg0,2,%r0,%r1	; %r1 = 4 * RDR number
141	blr  		%r1,%r0		; branch to 8-instruction sequence
142	nop
143
144;
145; Cacheline start (32-byte cacheline)
146;
147
148	;
149	; RDR 0 sequence
150	;
151	SFDIAG		(0)
152	ssm		    0,0
153	MFDIAG_1	(28)
154	shrpd		ret0,%r0,%sar,%r1
155	MTDIAG_1	(1)			; mtdiag %dr1, %r1
156	STDIAG		(0)
157	ssm		    0,0
158	b,n         perf_rdr_shift_in_W_leave
159
160	;
161	; RDR 1 sequence
162	;
163	sync
164	ssm		    0,0
165	SFDIAG		(1)
166	ssm		    0,0
167	MFDIAG_1	(28)
168	ssm		    0,0
169	b,n         perf_rdr_shift_in_W_leave
170	nop
171
172	;
173	; RDR 2 read sequence
174	;
175	SFDIAG		(2)
176	ssm		    0,0
177	MFDIAG_1	(28)
178	shrpd		ret0,%r0,%sar,%r1
179	MTDIAG_1	(1)
180	STDIAG		(2)
181	ssm		    0,0
182	b,n         perf_rdr_shift_in_W_leave
183
184	;
185	; RDR 3 read sequence
186	;
187	b,n         perf_rdr_shift_in_W_leave
188	nop
189	nop
190	nop
191	nop
192	nop
193	nop
194	nop
195
196	;
197	; RDR 4 read sequence
198	;
199	sync
200	ssm		0,0
201	SFDIAG		(4)
202	ssm		0,0
203	MFDIAG_1	(28)
204	b,n         perf_rdr_shift_in_W_leave
205	ssm		0,0
206	nop
207
208	;
209	; RDR 5 read sequence
210	;
211	sync
212	ssm		0,0
213	SFDIAG		(5)
214	ssm		0,0
215	MFDIAG_1	(28)
216	b,n         perf_rdr_shift_in_W_leave
217	ssm		0,0
218	nop
219
220	;
221	; RDR 6 read sequence
222	;
223	sync
224	ssm		0,0
225	SFDIAG		(6)
226	ssm		0,0
227	MFDIAG_1	(28)
228	b,n         perf_rdr_shift_in_W_leave
229	ssm		0,0
230	nop
231
232	;
233	; RDR 7 read sequence
234	;
235	b,n         perf_rdr_shift_in_W_leave
236	nop
237	nop
238	nop
239	nop
240	nop
241	nop
242	nop
243
244	;
245	; RDR 8 read sequence
246	;
247	b,n         perf_rdr_shift_in_W_leave
248	nop
249	nop
250	nop
251	nop
252	nop
253	nop
254	nop
255
256	;
257	; RDR 9 read sequence
258	;
259	b,n         perf_rdr_shift_in_W_leave
260	nop
261	nop
262	nop
263	nop
264	nop
265	nop
266	nop
267
268	;
269	; RDR 10 read sequence
270	;
271	SFDIAG		(10)
272	ssm		0,0
273	MFDIAG_1	(28)
274	shrpd		ret0,%r0,%sar,%r1
275	MTDIAG_1	(1)
276	STDIAG		(10)
277	ssm		0,0
278	b,n         perf_rdr_shift_in_W_leave
279
280	;
281	; RDR 11 read sequence
282	;
283	SFDIAG		(11)
284	ssm		0,0
285	MFDIAG_1	(28)
286	shrpd		ret0,%r0,%sar,%r1
287	MTDIAG_1	(1)
288	STDIAG		(11)
289	ssm		0,0
290	b,n         perf_rdr_shift_in_W_leave
291
292	;
293	; RDR 12 read sequence
294	;
295	b,n         perf_rdr_shift_in_W_leave
296	nop
297	nop
298	nop
299	nop
300	nop
301	nop
302	nop
303
304	;
305	; RDR 13 read sequence
306	;
307	sync
308	ssm		0,0
309	SFDIAG		(13)
310	ssm		0,0
311	MFDIAG_1	(28)
312	b,n         perf_rdr_shift_in_W_leave
313	ssm		0,0
314	nop
315
316	;
317	; RDR 14 read sequence
318	;
319	SFDIAG		(14)
320	ssm		0,0
321	MFDIAG_1	(28)
322	shrpd		ret0,%r0,%sar,%r1
323	MTDIAG_1	(1)
324	STDIAG		(14)
325	ssm		0,0
326	b,n         perf_rdr_shift_in_W_leave
327
328	;
329	; RDR 15 read sequence
330	;
331	sync
332	ssm		0,0
333	SFDIAG		(15)
334	ssm		0,0
335	MFDIAG_1	(28)
336	ssm		0,0
337	b,n         perf_rdr_shift_in_W_leave
338	nop
339
340	;
341	; RDR 16 read sequence
342	;
343	sync
344	ssm		0,0
345	SFDIAG		(16)
346	ssm		0,0
347	MFDIAG_1	(28)
348	b,n         perf_rdr_shift_in_W_leave
349	ssm		0,0
350	nop
351
352	;
353	; RDR 17 read sequence
354	;
355	SFDIAG		(17)
356	ssm		0,0
357	MFDIAG_1	(28)
358	shrpd		ret0,%r0,%sar,%r1
359	MTDIAG_1	(1)
360	STDIAG		(17)
361	ssm		0,0
362	b,n         perf_rdr_shift_in_W_leave
363
364	;
365	; RDR 18 read sequence
366	;
367	SFDIAG		(18)
368	ssm		0,0
369	MFDIAG_1	(28)
370	shrpd		ret0,%r0,%sar,%r1
371	MTDIAG_1	(1)
372	STDIAG		(18)
373	ssm		0,0
374	b,n         perf_rdr_shift_in_W_leave
375
376	;
377	; RDR 19 read sequence
378	;
379	b,n         perf_rdr_shift_in_W_leave
380	nop
381	nop
382	nop
383	nop
384	nop
385	nop
386	nop
387
388	;
389	; RDR 20 read sequence
390	;
391	sync
392	ssm		0,0
393	SFDIAG		(20)
394	ssm		0,0
395	MFDIAG_1	(28)
396	b,n         perf_rdr_shift_in_W_leave
397	ssm		0,0
398	nop
399
400	;
401	; RDR 21 read sequence
402	;
403	sync
404	ssm		0,0
405	SFDIAG		(21)
406	ssm		0,0
407	MFDIAG_1	(28)
408	b,n         perf_rdr_shift_in_W_leave
409	ssm		0,0
410	nop
411
412	;
413	; RDR 22 read sequence
414	;
415	sync
416	ssm		0,0
417	SFDIAG		(22)
418	ssm		0,0
419	MFDIAG_1	(28)
420	b,n         perf_rdr_shift_in_W_leave
421	ssm		0,0
422	nop
423
424	;
425	; RDR 23 read sequence
426	;
427	sync
428	ssm		0,0
429	SFDIAG		(23)
430	ssm		0,0
431	MFDIAG_1	(28)
432	b,n         perf_rdr_shift_in_W_leave
433	ssm		0,0
434	nop
435
436	;
437	; RDR 24 read sequence
438	;
439	sync
440	ssm		0,0
441	SFDIAG		(24)
442	ssm		0,0
443	MFDIAG_1	(28)
444	b,n         perf_rdr_shift_in_W_leave
445	ssm		0,0
446	nop
447
448	;
449	; RDR 25 read sequence
450	;
451	sync
452	ssm		0,0
453	SFDIAG		(25)
454	ssm		0,0
455	MFDIAG_1	(28)
456	b,n         perf_rdr_shift_in_W_leave
457	ssm		0,0
458	nop
459
460	;
461	; RDR 26 read sequence
462	;
463	SFDIAG		(26)
464	ssm		0,0
465	MFDIAG_1	(28)
466	shrpd		ret0,%r0,%sar,%r1
467	MTDIAG_1	(1)
468	STDIAG		(26)
469	ssm		0,0
470	b,n         perf_rdr_shift_in_W_leave
471
472	;
473	; RDR 27 read sequence
474	;
475	SFDIAG		(27)
476	ssm		0,0
477	MFDIAG_1	(28)
478	shrpd		ret0,%r0,%sar,%r1
479	MTDIAG_1	(1)
480	STDIAG		(27)
481	ssm		0,0
482	b,n         perf_rdr_shift_in_W_leave
483
484	;
485	; RDR 28 read sequence
486	;
487	sync
488	ssm		0,0
489	SFDIAG		(28)
490	ssm		0,0
491	MFDIAG_1	(28)
492	b,n         perf_rdr_shift_in_W_leave
493	ssm		0,0
494	nop
495
496	;
497	; RDR 29 read sequence
498	;
499	sync
500	ssm		0,0
501	SFDIAG		(29)
502	ssm		0,0
503	MFDIAG_1	(28)
504	b,n         perf_rdr_shift_in_W_leave
505	ssm		0,0
506	nop
507
508	;
509	; RDR 30 read sequence
510	;
511	SFDIAG		(30)
512	ssm		0,0
513	MFDIAG_1	(28)
514	shrpd		ret0,%r0,%sar,%r1
515	MTDIAG_1	(1)
516	STDIAG		(30)
517	ssm		0,0
518	b,n         perf_rdr_shift_in_W_leave
519
520	;
521	; RDR 31 read sequence
522	;
523	sync
524	ssm		0,0
525	SFDIAG		(31)
526	ssm		0,0
527	MFDIAG_1	(28)
528	nop
529	ssm		0,0
530	nop
531
532	;
533	; Fallthrough
534	;
535
536perf_rdr_shift_in_W_leave:
537	bve		    (%r2)
538	.exit
539	MTDIAG_2	(24)			; restore DR2
540	.procend
541ENDPROC(perf_rdr_shift_in_W)
542
543
544;***********************************************************************
545;*
546;* Name: perf_rdr_shift_out_W
547;*
548;* Description:
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.
551;*	Then the STDIAG instruction for the RDR # in arg0 is called
552;*	to move the data to the RDR.
553;*
554;* Arguments:
555;*	arg0 = rdr number
556;*	arg1 = 64-bit value to write
557;*	%r24 - DR2 | DR2_SLOW_RET
558;*	%r23 - original DR2 value
559;*
560;* Returns:
561;*	None
562;*
563;* Register usage:
564;*
565;***********************************************************************
566
567ENTRY(perf_rdr_shift_out_W)
568	.proc
569	.callinfo frame=0,NO_CALLS
570	.entry
571;
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.
574;
575
576	depdi,z		1,DR2_SLOW_RET,1,%r24
577	MFDIAG_2	(23)
578	or		%r24,%r23,%r24
579	MTDIAG_2	(24)		; set DR2_SLOW_RET
580	MTDIAG_1	(25)		; data to the staging register
581	shladd		arg0,2,%r0,%r1	; %r1 = 4 * RDR number
582	blr		    %r1,%r0	; branch to 8-instruction sequence
583	nop
584
585	;
586	; RDR 0 write sequence
587	;
588	sync				; RDR 0 write sequence
589	ssm		0,0
590	STDIAG		(0)
591	ssm		0,0
592	b,n         perf_rdr_shift_out_W_leave
593	nop
594	ssm		0,0
595	nop
596
597	;
598	; RDR 1 write sequence
599	;
600	sync
601	ssm		0,0
602	STDIAG		(1)
603	ssm		0,0
604	b,n         perf_rdr_shift_out_W_leave
605	nop
606	ssm		0,0
607	nop
608
609	;
610	; RDR 2 write sequence
611	;
612	sync
613	ssm		0,0
614	STDIAG		(2)
615	ssm		0,0
616	b,n         perf_rdr_shift_out_W_leave
617	nop
618	ssm		0,0
619	nop
620
621	;
622	; RDR 3 write sequence
623	;
624	sync
625	ssm		0,0
626	STDIAG		(3)
627	ssm		0,0
628	b,n         perf_rdr_shift_out_W_leave
629	nop
630	ssm		0,0
631	nop
632
633	;
634	; RDR 4 write sequence
635	;
636	sync
637	ssm		0,0
638	STDIAG		(4)
639	ssm		0,0
640	b,n         perf_rdr_shift_out_W_leave
641	nop
642	ssm		0,0
643	nop
644
645	;
646	; RDR 5 write sequence
647	;
648	sync
649	ssm		0,0
650	STDIAG		(5)
651	ssm		0,0
652	b,n         perf_rdr_shift_out_W_leave
653	nop
654	ssm		0,0
655	nop
656
657	;
658	; RDR 6 write sequence
659	;
660	sync
661	ssm		0,0
662	STDIAG		(6)
663	ssm		0,0
664	b,n         perf_rdr_shift_out_W_leave
665	nop
666	ssm		0,0
667	nop
668
669	;
670	; RDR 7 write sequence
671	;
672	sync
673	ssm		0,0
674	STDIAG		(7)
675	ssm		0,0
676	b,n         perf_rdr_shift_out_W_leave
677	nop
678	ssm		0,0
679	nop
680
681	;
682	; RDR 8 write sequence
683	;
684	sync
685	ssm		0,0
686	STDIAG		(8)
687	ssm		0,0
688	b,n         perf_rdr_shift_out_W_leave
689	nop
690	ssm		0,0
691	nop
692
693	;
694	; RDR 9 write sequence
695	;
696	sync
697	ssm		0,0
698	STDIAG		(9)
699	ssm		0,0
700	b,n         perf_rdr_shift_out_W_leave
701	nop
702	ssm		0,0
703	nop
704
705	;
706	; RDR 10 write sequence
707	;
708	sync
709	ssm		0,0
710	STDIAG		(10)
711	STDIAG		(26)
712	ssm		0,0
713	b,n         perf_rdr_shift_out_W_leave
714	ssm		0,0
715	nop
716
717	;
718	; RDR 11 write sequence
719	;
720	sync
721	ssm		0,0
722	STDIAG		(11)
723	STDIAG		(27)
724	ssm		0,0
725	b,n         perf_rdr_shift_out_W_leave
726	ssm		0,0
727	nop
728
729	;
730	; RDR 12 write sequence
731	;
732	sync
733	ssm		0,0
734	STDIAG		(12)
735	ssm		0,0
736	b,n         perf_rdr_shift_out_W_leave
737	nop
738	ssm		0,0
739	nop
740
741	;
742	; RDR 13 write sequence
743	;
744	sync
745	ssm		0,0
746	STDIAG		(13)
747	ssm		0,0
748	b,n         perf_rdr_shift_out_W_leave
749	nop
750	ssm		0,0
751	nop
752
753	;
754	; RDR 14 write sequence
755	;
756	sync
757	ssm		0,0
758	STDIAG		(14)
759	ssm		0,0
760	b,n         perf_rdr_shift_out_W_leave
761	nop
762	ssm		0,0
763	nop
764
765	;
766	; RDR 15 write sequence
767	;
768	sync
769	ssm		0,0
770	STDIAG		(15)
771	ssm		0,0
772	b,n         perf_rdr_shift_out_W_leave
773	nop
774	ssm		0,0
775	nop
776
777	;
778	; RDR 16 write sequence
779	;
780	sync
781	ssm		0,0
782	STDIAG		(16)
783	ssm		0,0
784	b,n         perf_rdr_shift_out_W_leave
785	nop
786	ssm		0,0
787	nop
788
789	;
790	; RDR 17 write sequence
791	;
792	sync
793	ssm		0,0
794	STDIAG		(17)
795	ssm		0,0
796	b,n         perf_rdr_shift_out_W_leave
797	nop
798	ssm		0,0
799	nop
800
801	;
802	; RDR 18 write sequence
803	;
804	sync
805	ssm		0,0
806	STDIAG		(18)
807	ssm		0,0
808	b,n         perf_rdr_shift_out_W_leave
809	nop
810	ssm		0,0
811	nop
812
813	;
814	; RDR 19 write sequence
815	;
816	sync
817	ssm		0,0
818	STDIAG		(19)
819	ssm		0,0
820	b,n         perf_rdr_shift_out_W_leave
821	nop
822	ssm		0,0
823	nop
824
825	;
826	; RDR 20 write sequence
827	;
828	sync
829	ssm		0,0
830	STDIAG		(20)
831	ssm		0,0
832	b,n         perf_rdr_shift_out_W_leave
833	nop
834	ssm		0,0
835	nop
836
837	;
838	; RDR 21 write sequence
839	;
840	sync
841	ssm		0,0
842	STDIAG		(21)
843	ssm		0,0
844	b,n         perf_rdr_shift_out_W_leave
845	nop
846	ssm		0,0
847	nop
848
849	;
850	; RDR 22 write sequence
851	;
852	sync
853	ssm		0,0
854	STDIAG		(22)
855	ssm		0,0
856	b,n         perf_rdr_shift_out_W_leave
857	nop
858	ssm		0,0
859	nop
860
861	;
862	; RDR 23 write sequence
863	;
864	sync
865	ssm		0,0
866	STDIAG		(23)
867	ssm		0,0
868	b,n         perf_rdr_shift_out_W_leave
869	nop
870	ssm		0,0
871	nop
872
873	;
874	; RDR 24 write sequence
875	;
876	sync
877	ssm		0,0
878	STDIAG		(24)
879	ssm		0,0
880	b,n         perf_rdr_shift_out_W_leave
881	nop
882	ssm		0,0
883	nop
884
885	;
886	; RDR 25 write sequence
887	;
888	sync
889	ssm		0,0
890	STDIAG		(25)
891	ssm		0,0
892	b,n         perf_rdr_shift_out_W_leave
893	nop
894	ssm		0,0
895	nop
896
897	;
898	; RDR 26 write sequence
899	;
900	sync
901	ssm		0,0
902	STDIAG		(10)
903	STDIAG		(26)
904	ssm		0,0
905	b,n         perf_rdr_shift_out_W_leave
906	ssm		0,0
907	nop
908
909	;
910	; RDR 27 write sequence
911	;
912	sync
913	ssm		0,0
914	STDIAG		(11)
915	STDIAG		(27)
916	ssm		0,0
917	b,n         perf_rdr_shift_out_W_leave
918	ssm		0,0
919	nop
920
921	;
922	; RDR 28 write sequence
923	;
924	sync
925	ssm		0,0
926	STDIAG		(28)
927	ssm		0,0
928	b,n         perf_rdr_shift_out_W_leave
929	nop
930	ssm		0,0
931	nop
932
933	;
934	; RDR 29 write sequence
935	;
936	sync
937	ssm		0,0
938	STDIAG		(29)
939	ssm		0,0
940	b,n         perf_rdr_shift_out_W_leave
941	nop
942	ssm		0,0
943	nop
944
945	;
946	; RDR 30 write sequence
947	;
948	sync
949	ssm		0,0
950	STDIAG		(30)
951	ssm		0,0
952	b,n         perf_rdr_shift_out_W_leave
953	nop
954	ssm		0,0
955	nop
956
957	;
958	; RDR 31 write sequence
959	;
960	sync
961	ssm		0,0
962	STDIAG		(31)
963	ssm		0,0
964	b,n         perf_rdr_shift_out_W_leave
965	nop
966	ssm		0,0
967	nop
968
969perf_rdr_shift_out_W_leave:
970	bve		(%r2)
971	.exit
972	MTDIAG_2	(23)			; restore DR2
973	.procend
974ENDPROC(perf_rdr_shift_out_W)
975
976
977;***********************************************************************
978;*
979;* Name: rdr_shift_in_U
980;*
981;* Description:
982;*	This routine shifts data in from the RDR in arg0 and returns
983;*	the result in ret0.  If the RDR is <= 64 bits in length, it
984;*	is shifted shifted backup immediately.  This is to compensate
985;*	for RDR10 which has bits that preclude PDC stack operations
986;*	when they are in the wrong state.
987;*
988;* Arguments:
989;*	arg0 : rdr to be read
990;*	arg1 : bit length of rdr
991;*
992;* Returns:
993;*	ret0 = next 64 bits of rdr data from staging register
994;*
995;* Register usage:
996;*	arg0 : rdr to be read
997;*	arg1 : bit length of rdr
998;*	%r24 - original DR2 value
999;*	%r23 - DR2 | DR2_SLOW_RET
1000;*	%r1  - scratch
1001;*
1002;***********************************************************************
1003
1004ENTRY(perf_rdr_shift_in_U)
1005	.proc
1006	.callinfo frame=0,NO_CALLS
1007	.entry
1008
1009; read(shift in) the RDR.
1010;
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.
1013
1014	depdi,z		1,DR2_SLOW_RET,1,%r29
1015	MFDIAG_2	(24)
1016	or			%r24,%r29,%r29
1017	MTDIAG_2	(29)			; set DR2_SLOW_RET
1018
1019	nop
1020	nop
1021	nop
1022	nop
1023
1024;
1025; Start of next 32-byte cacheline
1026;
1027	nop
1028	nop
1029	nop
1030	extrd,u		arg1,63,6,%r1
1031
1032	mtsar		%r1
1033	shladd		arg0,2,%r0,%r1	; %r1 = 4 * RDR number
1034	blr 		%r1,%r0		; branch to 8-instruction sequence
1035	nop
1036
1037;
1038; Start of next 32-byte cacheline
1039;
1040	SFDIAG		(0)		; RDR 0 read sequence
1041	ssm		0,0
1042	MFDIAG_1	(28)
1043	shrpd		ret0,%r0,%sar,%r1
1044	MTDIAG_1	(1)
1045	STDIAG		(0)
1046	ssm		0,0
1047	b,n         perf_rdr_shift_in_U_leave
1048
1049	SFDIAG		(1)		; RDR 1 read sequence
1050	ssm		0,0
1051	MFDIAG_1	(28)
1052	shrpd		ret0,%r0,%sar,%r1
1053	MTDIAG_1	(1)
1054	STDIAG		(1)
1055	ssm		0,0
1056	b,n         perf_rdr_shift_in_U_leave
1057
1058	sync				; RDR 2 read sequence
1059	ssm		0,0
1060	SFDIAG		(4)
1061	ssm		0,0
1062	MFDIAG_1	(28)
1063	b,n         perf_rdr_shift_in_U_leave
1064	ssm		0,0
1065	nop
1066
1067	sync				; RDR 3 read sequence
1068	ssm		0,0
1069	SFDIAG		(3)
1070	ssm		0,0
1071	MFDIAG_1	(28)
1072	b,n         perf_rdr_shift_in_U_leave
1073	ssm		0,0
1074	nop
1075
1076	sync				; RDR 4 read sequence
1077	ssm		0,0
1078	SFDIAG		(4)
1079	ssm		0,0
1080	MFDIAG_1	(28)
1081	b,n         perf_rdr_shift_in_U_leave
1082	ssm		0,0
1083	nop
1084
1085	sync				; RDR 5 read sequence
1086	ssm		0,0
1087	SFDIAG		(5)
1088	ssm		0,0
1089	MFDIAG_1	(28)
1090	b,n         perf_rdr_shift_in_U_leave
1091	ssm		0,0
1092	nop
1093
1094	sync				; RDR 6 read sequence
1095	ssm		0,0
1096	SFDIAG		(6)
1097	ssm		0,0
1098	MFDIAG_1	(28)
1099	b,n         perf_rdr_shift_in_U_leave
1100	ssm		0,0
1101	nop
1102
1103	sync				; RDR 7 read sequence
1104	ssm		0,0
1105	SFDIAG		(7)
1106	ssm		0,0
1107	MFDIAG_1	(28)
1108	b,n         perf_rdr_shift_in_U_leave
1109	ssm		0,0
1110	nop
1111
1112	b,n         perf_rdr_shift_in_U_leave
1113	nop
1114	nop
1115	nop
1116	nop
1117	nop
1118	nop
1119	nop
1120
1121	SFDIAG		(9)		; RDR 9 read sequence
1122	ssm		0,0
1123	MFDIAG_1	(28)
1124	shrpd		ret0,%r0,%sar,%r1
1125	MTDIAG_1	(1)
1126	STDIAG		(9)
1127	ssm		0,0
1128	b,n         perf_rdr_shift_in_U_leave
1129
1130	SFDIAG		(10)		; RDR 10 read sequence
1131	ssm		0,0
1132	MFDIAG_1	(28)
1133	shrpd		ret0,%r0,%sar,%r1
1134	MTDIAG_1	(1)
1135	STDIAG		(10)
1136	ssm		0,0
1137	b,n         perf_rdr_shift_in_U_leave
1138
1139	SFDIAG		(11)		; RDR 11 read sequence
1140	ssm		0,0
1141	MFDIAG_1	(28)
1142	shrpd		ret0,%r0,%sar,%r1
1143	MTDIAG_1	(1)
1144	STDIAG		(11)
1145	ssm		0,0
1146	b,n         perf_rdr_shift_in_U_leave
1147
1148	SFDIAG		(12)		; RDR 12 read sequence
1149	ssm		0,0
1150	MFDIAG_1	(28)
1151	shrpd		ret0,%r0,%sar,%r1
1152	MTDIAG_1	(1)
1153	STDIAG		(12)
1154	ssm		0,0
1155	b,n         perf_rdr_shift_in_U_leave
1156
1157	SFDIAG		(13)		; RDR 13 read sequence
1158	ssm		0,0
1159	MFDIAG_1	(28)
1160	shrpd		ret0,%r0,%sar,%r1
1161	MTDIAG_1	(1)
1162	STDIAG		(13)
1163	ssm		0,0
1164	b,n         perf_rdr_shift_in_U_leave
1165
1166	SFDIAG		(14)		; RDR 14 read sequence
1167	ssm		0,0
1168	MFDIAG_1	(28)
1169	shrpd		ret0,%r0,%sar,%r1
1170	MTDIAG_1	(1)
1171	STDIAG		(14)
1172	ssm		0,0
1173	b,n         perf_rdr_shift_in_U_leave
1174
1175	SFDIAG		(15)		; RDR 15 read sequence
1176	ssm		0,0
1177	MFDIAG_1	(28)
1178	shrpd		ret0,%r0,%sar,%r1
1179	MTDIAG_1	(1)
1180	STDIAG		(15)
1181	ssm		0,0
1182	b,n         perf_rdr_shift_in_U_leave
1183
1184	sync				; RDR 16 read sequence
1185	ssm		0,0
1186	SFDIAG		(16)
1187	ssm		0,0
1188	MFDIAG_1	(28)
1189	b,n         perf_rdr_shift_in_U_leave
1190	ssm		0,0
1191	nop
1192
1193	SFDIAG		(17)		; RDR 17 read sequence
1194	ssm		0,0
1195	MFDIAG_1	(28)
1196	shrpd		ret0,%r0,%sar,%r1
1197	MTDIAG_1	(1)
1198	STDIAG		(17)
1199	ssm		0,0
1200	b,n         perf_rdr_shift_in_U_leave
1201
1202	SFDIAG		(18)		; RDR 18 read sequence
1203	ssm		0,0
1204	MFDIAG_1	(28)
1205	shrpd		ret0,%r0,%sar,%r1
1206	MTDIAG_1	(1)
1207	STDIAG		(18)
1208	ssm		0,0
1209	b,n         perf_rdr_shift_in_U_leave
1210
1211	b,n         perf_rdr_shift_in_U_leave
1212	nop
1213	nop
1214	nop
1215	nop
1216	nop
1217	nop
1218	nop
1219
1220	sync				; RDR 20 read sequence
1221	ssm		0,0
1222	SFDIAG		(20)
1223	ssm		0,0
1224	MFDIAG_1	(28)
1225	b,n         perf_rdr_shift_in_U_leave
1226	ssm		0,0
1227	nop
1228
1229	sync				; RDR 21 read sequence
1230	ssm		0,0
1231	SFDIAG		(21)
1232	ssm		0,0
1233	MFDIAG_1	(28)
1234	b,n         perf_rdr_shift_in_U_leave
1235	ssm		0,0
1236	nop
1237
1238	sync				; RDR 22 read sequence
1239	ssm		0,0
1240	SFDIAG		(22)
1241	ssm		0,0
1242	MFDIAG_1	(28)
1243	b,n         perf_rdr_shift_in_U_leave
1244	ssm		0,0
1245	nop
1246
1247	sync				; RDR 23 read sequence
1248	ssm		0,0
1249	SFDIAG		(23)
1250	ssm		0,0
1251	MFDIAG_1	(28)
1252	b,n         perf_rdr_shift_in_U_leave
1253	ssm		0,0
1254	nop
1255
1256	sync				; RDR 24 read sequence
1257	ssm		0,0
1258	SFDIAG		(24)
1259	ssm		0,0
1260	MFDIAG_1	(28)
1261	b,n         perf_rdr_shift_in_U_leave
1262	ssm		0,0
1263	nop
1264
1265	sync				; RDR 25 read sequence
1266	ssm		0,0
1267	SFDIAG		(25)
1268	ssm		0,0
1269	MFDIAG_1	(28)
1270	b,n         perf_rdr_shift_in_U_leave
1271	ssm		0,0
1272	nop
1273
1274	SFDIAG		(26)		; RDR 26 read sequence
1275	ssm		0,0
1276	MFDIAG_1	(28)
1277	shrpd		ret0,%r0,%sar,%r1
1278	MTDIAG_1	(1)
1279	STDIAG		(26)
1280	ssm		0,0
1281	b,n         perf_rdr_shift_in_U_leave
1282
1283	SFDIAG		(27)		; RDR 27 read sequence
1284	ssm		0,0
1285	MFDIAG_1	(28)
1286	shrpd		ret0,%r0,%sar,%r1
1287	MTDIAG_1	(1)
1288	STDIAG		(27)
1289	ssm		0,0
1290	b,n         perf_rdr_shift_in_U_leave
1291
1292	sync				; RDR 28 read sequence
1293	ssm		0,0
1294	SFDIAG		(28)
1295	ssm		0,0
1296	MFDIAG_1	(28)
1297	b,n         perf_rdr_shift_in_U_leave
1298	ssm		0,0
1299	nop
1300
1301	b,n         perf_rdr_shift_in_U_leave
1302	nop
1303	nop
1304	nop
1305	nop
1306	nop
1307	nop
1308	nop
1309
1310	SFDIAG		(30)		; RDR 30 read sequence
1311	ssm		0,0
1312	MFDIAG_1	(28)
1313	shrpd		ret0,%r0,%sar,%r1
1314	MTDIAG_1	(1)
1315	STDIAG		(30)
1316	ssm		0,0
1317	b,n         perf_rdr_shift_in_U_leave
1318
1319	SFDIAG		(31)		; RDR 31 read sequence
1320	ssm		0,0
1321	MFDIAG_1	(28)
1322	shrpd		ret0,%r0,%sar,%r1
1323	MTDIAG_1	(1)
1324	STDIAG		(31)
1325	ssm		0,0
1326	b,n         perf_rdr_shift_in_U_leave
1327	nop
1328
1329perf_rdr_shift_in_U_leave:
1330	bve		    (%r2)
1331	.exit
1332	MTDIAG_2	(24)			; restore DR2
1333	.procend
1334ENDPROC(perf_rdr_shift_in_U)
1335
1336;***********************************************************************
1337;*
1338;* Name: rdr_shift_out_U
1339;*
1340;* Description:
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.
1343;*	Then the STDIAG instruction for the RDR # in arg0 is called
1344;*	to move the data to the RDR.
1345;*
1346;* Arguments:
1347;*	arg0 = rdr target
1348;*	arg1 = buffer pointer
1349;*
1350;* Returns:
1351;*	None
1352;*
1353;* Register usage:
1354;*	arg0 = rdr target
1355;*	arg1 = buffer pointer
1356;*	%r24 - DR2 | DR2_SLOW_RET
1357;*	%r23 - original DR2 value
1358;*
1359;***********************************************************************
1360
1361ENTRY(perf_rdr_shift_out_U)
1362	.proc
1363	.callinfo frame=0,NO_CALLS
1364	.entry
1365
1366;
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.
1369;
1370
1371	depdi,z		1,DR2_SLOW_RET,1,%r24
1372	MFDIAG_2	(23)
1373	or		%r24,%r23,%r24
1374	MTDIAG_2	(24)		; set DR2_SLOW_RET
1375
1376	MTDIAG_1	(25)		; data to the staging register
1377	shladd		arg0,2,%r0,%r1	; %r1 = 4 * RDR number
1378	blr		%r1,%r0		; branch to 8-instruction sequence
1379	nop
1380
1381;
1382; 32-byte cachline aligned
1383;
1384
1385	sync				; RDR 0 write sequence
1386	ssm		0,0
1387	STDIAG		(0)
1388	ssm		0,0
1389	b,n         perf_rdr_shift_out_U_leave
1390	nop
1391	ssm		0,0
1392	nop
1393
1394	sync				; RDR 1 write sequence
1395	ssm		0,0
1396	STDIAG		(1)
1397	ssm		0,0
1398	b,n         perf_rdr_shift_out_U_leave
1399	nop
1400	ssm		0,0
1401	nop
1402
1403	sync				; RDR 2 write sequence
1404	ssm		0,0
1405	STDIAG		(2)
1406	ssm		0,0
1407	b,n         perf_rdr_shift_out_U_leave
1408	nop
1409	ssm		0,0
1410	nop
1411
1412	sync				; RDR 3 write sequence
1413	ssm		0,0
1414	STDIAG		(3)
1415	ssm		0,0
1416	b,n         perf_rdr_shift_out_U_leave
1417	nop
1418	ssm		0,0
1419	nop
1420
1421	sync				; RDR 4 write sequence
1422	ssm		0,0
1423	STDIAG		(4)
1424	ssm		0,0
1425	b,n         perf_rdr_shift_out_U_leave
1426	nop
1427	ssm		0,0
1428	nop
1429
1430	sync				; RDR 5 write sequence
1431	ssm		0,0
1432	STDIAG		(5)
1433	ssm		0,0
1434	b,n         perf_rdr_shift_out_U_leave
1435	nop
1436	ssm		0,0
1437	nop
1438
1439	sync				; RDR 6 write sequence
1440	ssm		0,0
1441	STDIAG		(6)
1442	ssm		0,0
1443	b,n         perf_rdr_shift_out_U_leave
1444	nop
1445	ssm		0,0
1446	nop
1447
1448	sync				; RDR 7 write sequence
1449	ssm		0,0
1450	STDIAG		(7)
1451	ssm		0,0
1452	b,n         perf_rdr_shift_out_U_leave
1453	nop
1454	ssm		0,0
1455	nop
1456
1457	sync				; RDR 8 write sequence
1458	ssm		0,0
1459	STDIAG		(8)
1460	ssm		0,0
1461	b,n         perf_rdr_shift_out_U_leave
1462	nop
1463	ssm		0,0
1464	nop
1465
1466	sync				; RDR 9 write sequence
1467	ssm		0,0
1468	STDIAG		(9)
1469	ssm		0,0
1470	b,n         perf_rdr_shift_out_U_leave
1471	nop
1472	ssm		0,0
1473	nop
1474
1475	sync				; RDR 10 write sequence
1476	ssm		0,0
1477	STDIAG		(10)
1478	ssm		0,0
1479	b,n         perf_rdr_shift_out_U_leave
1480	nop
1481	ssm		0,0
1482	nop
1483
1484	sync				; RDR 11 write sequence
1485	ssm		0,0
1486	STDIAG		(11)
1487	ssm		0,0
1488	b,n         perf_rdr_shift_out_U_leave
1489	nop
1490	ssm		0,0
1491	nop
1492
1493	sync				; RDR 12 write sequence
1494	ssm		0,0
1495	STDIAG		(12)
1496	ssm		0,0
1497	b,n         perf_rdr_shift_out_U_leave
1498	nop
1499	ssm		0,0
1500	nop
1501
1502	sync				; RDR 13 write sequence
1503	ssm		0,0
1504	STDIAG		(13)
1505	ssm		0,0
1506	b,n         perf_rdr_shift_out_U_leave
1507	nop
1508	ssm		0,0
1509	nop
1510
1511	sync				; RDR 14 write sequence
1512	ssm		0,0
1513	STDIAG		(14)
1514	ssm		0,0
1515	b,n         perf_rdr_shift_out_U_leave
1516	nop
1517	ssm		0,0
1518	nop
1519
1520	sync				; RDR 15 write sequence
1521	ssm		0,0
1522	STDIAG		(15)
1523	ssm		0,0
1524	b,n         perf_rdr_shift_out_U_leave
1525	nop
1526	ssm		0,0
1527	nop
1528
1529	sync				; RDR 16 write sequence
1530	ssm		0,0
1531	STDIAG		(16)
1532	ssm		0,0
1533	b,n         perf_rdr_shift_out_U_leave
1534	nop
1535	ssm		0,0
1536	nop
1537
1538	sync				; RDR 17 write sequence
1539	ssm		0,0
1540	STDIAG		(17)
1541	ssm		0,0
1542	b,n         perf_rdr_shift_out_U_leave
1543	nop
1544	ssm		0,0
1545	nop
1546
1547	sync				; RDR 18 write sequence
1548	ssm		0,0
1549	STDIAG		(18)
1550	ssm		0,0
1551	b,n         perf_rdr_shift_out_U_leave
1552	nop
1553	ssm		0,0
1554	nop
1555
1556	sync				; RDR 19 write sequence
1557	ssm		0,0
1558	STDIAG		(19)
1559	ssm		0,0
1560	b,n         perf_rdr_shift_out_U_leave
1561	nop
1562	ssm		0,0
1563	nop
1564
1565	sync				; RDR 20 write sequence
1566	ssm		0,0
1567	STDIAG		(20)
1568	ssm		0,0
1569	b,n         perf_rdr_shift_out_U_leave
1570	nop
1571	ssm		0,0
1572	nop
1573
1574	sync				; RDR 21 write sequence
1575	ssm		0,0
1576	STDIAG		(21)
1577	ssm		0,0
1578	b,n         perf_rdr_shift_out_U_leave
1579	nop
1580	ssm		0,0
1581	nop
1582
1583	sync				; RDR 22 write sequence
1584	ssm		0,0
1585	STDIAG		(22)
1586	ssm		0,0
1587	b,n         perf_rdr_shift_out_U_leave
1588	nop
1589	ssm		0,0
1590	nop
1591
1592	sync				; RDR 23 write sequence
1593	ssm		0,0
1594	STDIAG		(23)
1595	ssm		0,0
1596	b,n         perf_rdr_shift_out_U_leave
1597	nop
1598	ssm		0,0
1599	nop
1600
1601	sync				; RDR 24 write sequence
1602	ssm		0,0
1603	STDIAG		(24)
1604	ssm		0,0
1605	b,n         perf_rdr_shift_out_U_leave
1606	nop
1607	ssm		0,0
1608	nop
1609
1610	sync				; RDR 25 write sequence
1611	ssm		0,0
1612	STDIAG		(25)
1613	ssm		0,0
1614	b,n         perf_rdr_shift_out_U_leave
1615	nop
1616	ssm		0,0
1617	nop
1618
1619	sync				; RDR 26 write sequence
1620	ssm		0,0
1621	STDIAG		(26)
1622	ssm		0,0
1623	b,n         perf_rdr_shift_out_U_leave
1624	nop
1625	ssm		0,0
1626	nop
1627
1628	sync				; RDR 27 write sequence
1629	ssm		0,0
1630	STDIAG		(27)
1631	ssm		0,0
1632	b,n         perf_rdr_shift_out_U_leave
1633	nop
1634	ssm		0,0
1635	nop
1636
1637	sync				; RDR 28 write sequence
1638	ssm		0,0
1639	STDIAG		(28)
1640	ssm		0,0
1641	b,n         perf_rdr_shift_out_U_leave
1642	nop
1643	ssm		0,0
1644	nop
1645
1646	sync				; RDR 29 write sequence
1647	ssm		0,0
1648	STDIAG		(29)
1649	ssm		0,0
1650	b,n         perf_rdr_shift_out_U_leave
1651	nop
1652	ssm		0,0
1653	nop
1654
1655	sync				; RDR 30 write sequence
1656	ssm		0,0
1657	STDIAG		(30)
1658	ssm		0,0
1659	b,n         perf_rdr_shift_out_U_leave
1660	nop
1661	ssm		0,0
1662	nop
1663
1664	sync				; RDR 31 write sequence
1665	ssm		0,0
1666	STDIAG		(31)
1667	ssm		0,0
1668	b,n         perf_rdr_shift_out_U_leave
1669	nop
1670	ssm		0,0
1671	nop
1672
1673perf_rdr_shift_out_U_leave:
1674	bve		(%r2)
1675	.exit
1676	MTDIAG_2	(23)			; restore DR2
1677	.procend
1678ENDPROC(perf_rdr_shift_out_U)
1679
1680