1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Common Performance counter support functions for PowerISA v2.07 processors.
5 * Copyright 2009 Paul Mackerras, IBM Corporation.
6 * Copyright 2013 Michael Ellerman, IBM Corporation.
7 * Copyright 2016 Madhavan Srinivasan, IBM Corporation.
9 #include "isa207-common.h"
11 PMU_FORMAT_ATTR(event, "config:0-49");
12 PMU_FORMAT_ATTR(pmcxsel, "config:0-7");
13 PMU_FORMAT_ATTR(mark, "config:8");
14 PMU_FORMAT_ATTR(combine, "config:11");
15 PMU_FORMAT_ATTR(unit, "config:12-15");
16 PMU_FORMAT_ATTR(pmc, "config:16-19");
17 PMU_FORMAT_ATTR(cache_sel, "config:20-23");
18 PMU_FORMAT_ATTR(sample_mode, "config:24-28");
19 PMU_FORMAT_ATTR(thresh_sel, "config:29-31");
20 PMU_FORMAT_ATTR(thresh_stop, "config:32-35");
21 PMU_FORMAT_ATTR(thresh_start, "config:36-39");
22 PMU_FORMAT_ATTR(thresh_cmp, "config:40-49");
24 static struct attribute *isa207_pmu_format_attr[] = {
25 &format_attr_event.attr,
26 &format_attr_pmcxsel.attr,
27 &format_attr_mark.attr,
28 &format_attr_combine.attr,
29 &format_attr_unit.attr,
30 &format_attr_pmc.attr,
31 &format_attr_cache_sel.attr,
32 &format_attr_sample_mode.attr,
33 &format_attr_thresh_sel.attr,
34 &format_attr_thresh_stop.attr,
35 &format_attr_thresh_start.attr,
36 &format_attr_thresh_cmp.attr,
40 const struct attribute_group isa207_pmu_format_group = {
42 .attrs = isa207_pmu_format_attr,
45 static inline bool event_is_fab_match(u64 event)
47 /* Only check pmc, unit and pmcxsel, ignore the edge bit (0) */
50 /* PM_MRK_FAB_RSP_MATCH & PM_MRK_FAB_RSP_MATCH_CYC */
51 return (event == 0x30056 || event == 0x4f052);
54 static bool is_event_valid(u64 event)
56 u64 valid_mask = EVENT_VALID_MASK;
58 if (cpu_has_feature(CPU_FTR_ARCH_31))
59 valid_mask = p10_EVENT_VALID_MASK;
60 else if (cpu_has_feature(CPU_FTR_ARCH_300))
61 valid_mask = p9_EVENT_VALID_MASK;
63 return !(event & ~valid_mask);
66 static inline bool is_event_marked(u64 event)
68 if (event & EVENT_IS_MARKED)
74 static unsigned long sdar_mod_val(u64 event)
76 if (cpu_has_feature(CPU_FTR_ARCH_31))
77 return p10_SDAR_MODE(event);
79 return p9_SDAR_MODE(event);
82 static void mmcra_sdar_mode(u64 event, unsigned long *mmcra)
85 * MMCRA[SDAR_MODE] specifies how the SDAR should be updated in
86 * continuous sampling mode.
89 * MMCRA[SDAR_MODE] will be programmed as "0b01" for continuous sampling
90 * mode and will be un-changed when setting MMCRA[63] (Marked events).
92 * Incase of Power9/power10:
93 * Marked event: MMCRA[SDAR_MODE] will be set to 0b00 ('No Updates'),
94 * or if group already have any marked events.
96 * MMCRA[SDAR_MODE] will be set from event code.
97 * If sdar_mode from event is zero, default to 0b01. Hardware
98 * requires that we set a non-zero value.
100 if (cpu_has_feature(CPU_FTR_ARCH_300)) {
101 if (is_event_marked(event) || (*mmcra & MMCRA_SAMPLE_ENABLE))
102 *mmcra &= MMCRA_SDAR_MODE_NO_UPDATES;
103 else if (sdar_mod_val(event))
104 *mmcra |= sdar_mod_val(event) << MMCRA_SDAR_MODE_SHIFT;
106 *mmcra |= MMCRA_SDAR_MODE_DCACHE;
108 *mmcra |= MMCRA_SDAR_MODE_TLB;
111 static int p10_thresh_cmp_val(u64 value)
120 * Incase of P10, thresh_cmp value is not part of raw event code
121 * and provided via attr.config1 parameter. To program threshold in MMCRA,
122 * take a 18 bit number N and shift right 2 places and increment
123 * the exponent E by 1 until the upper 10 bits of N are zero.
124 * Write E to the threshold exponent and write the lower 8 bits of N
125 * to the threshold mantissa.
126 * The max threshold that can be written is 261120.
128 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
131 while ((64 - __builtin_clzl(value)) > 8) {
137 * Note that it is invalid to write a mantissa with the
138 * upper 2 bits of mantissa being zero, unless the
139 * exponent is also zero.
141 if (!(value & 0xC0) && exp)
144 result = (exp << 8) | value;
149 static u64 thresh_cmp_val(u64 value)
151 if (cpu_has_feature(CPU_FTR_ARCH_31))
152 value = p10_thresh_cmp_val(value);
155 * Since location of threshold compare bits in MMCRA
156 * is different for p8, using different shift value.
158 if (cpu_has_feature(CPU_FTR_ARCH_300))
159 return value << p9_MMCRA_THR_CMP_SHIFT;
161 return value << MMCRA_THR_CMP_SHIFT;
164 static unsigned long combine_from_event(u64 event)
166 if (cpu_has_feature(CPU_FTR_ARCH_300))
167 return p9_EVENT_COMBINE(event);
169 return EVENT_COMBINE(event);
172 static unsigned long combine_shift(unsigned long pmc)
174 if (cpu_has_feature(CPU_FTR_ARCH_300))
175 return p9_MMCR1_COMBINE_SHIFT(pmc);
177 return MMCR1_COMBINE_SHIFT(pmc);
180 static inline bool event_is_threshold(u64 event)
182 return (event >> EVENT_THR_SEL_SHIFT) & EVENT_THR_SEL_MASK;
185 static bool is_thresh_cmp_valid(u64 event)
187 unsigned int cmp, exp;
189 if (cpu_has_feature(CPU_FTR_ARCH_31))
190 return p10_thresh_cmp_val(event) >= 0;
193 * Check the mantissa upper two bits are not zero, unless the
194 * exponent is also zero. See the THRESH_CMP_MANTISSA doc.
197 cmp = (event >> EVENT_THR_CMP_SHIFT) & EVENT_THR_CMP_MASK;
200 if (exp && (cmp & 0x60) == 0)
206 static unsigned int dc_ic_rld_quad_l1_sel(u64 event)
210 cache = (event >> EVENT_CACHE_SEL_SHIFT) & MMCR1_DC_IC_QUAL_MASK;
214 static inline u64 isa207_find_source(u64 idx, u32 sub_idx)
216 u64 ret = PERF_MEM_NA;
223 ret = PH(LVL, L1) | LEVEL(L1) | P(SNOOP, HIT);
226 ret = PH(LVL, L2) | LEVEL(L2) | P(SNOOP, HIT);
229 ret = PH(LVL, L3) | LEVEL(L3) | P(SNOOP, HIT);
232 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
236 ret |= PH(LVL, LOC_RAM) | LEVEL(RAM);
237 else if (sub_idx == 2 || sub_idx == 3)
238 ret |= P(LVL, HIT) | LEVEL(PMEM);
239 else if (sub_idx == 4)
240 ret |= PH(LVL, REM_RAM1) | REM | LEVEL(RAM) | P(HOPS, 2);
241 else if (sub_idx == 5 || sub_idx == 7)
242 ret |= P(LVL, HIT) | LEVEL(PMEM) | REM;
243 else if (sub_idx == 6)
244 ret |= PH(LVL, REM_RAM2) | REM | LEVEL(RAM) | P(HOPS, 3);
247 ret = PH(LVL, LOC_RAM);
248 else if (sub_idx > 1 && sub_idx <= 2)
249 ret = PH(LVL, REM_RAM1);
251 ret = PH(LVL, REM_RAM2);
252 ret |= P(SNOOP, HIT);
256 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
257 ret = REM | P(HOPS, 0);
259 if (sub_idx == 0 || sub_idx == 4)
260 ret |= PH(LVL, L2) | LEVEL(L2) | P(SNOOP, HIT);
261 else if (sub_idx == 1 || sub_idx == 5)
262 ret |= PH(LVL, L2) | LEVEL(L2) | P(SNOOP, HITM);
263 else if (sub_idx == 2 || sub_idx == 6)
264 ret |= PH(LVL, L3) | LEVEL(L3) | P(SNOOP, HIT);
265 else if (sub_idx == 3 || sub_idx == 7)
266 ret |= PH(LVL, L3) | LEVEL(L3) | P(SNOOP, HITM);
269 ret = PH(LVL, L2) | LEVEL(L2) | REM | P(SNOOP, HIT) | P(HOPS, 0);
270 else if (sub_idx == 1)
271 ret = PH(LVL, L2) | LEVEL(L2) | REM | P(SNOOP, HITM) | P(HOPS, 0);
272 else if (sub_idx == 2 || sub_idx == 4)
273 ret = PH(LVL, L3) | LEVEL(L3) | REM | P(SNOOP, HIT) | P(HOPS, 0);
274 else if (sub_idx == 3 || sub_idx == 5)
275 ret = PH(LVL, L3) | LEVEL(L3) | REM | P(SNOOP, HITM) | P(HOPS, 0);
279 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
281 ret = PH(LVL, REM_CCE1) | LEVEL(ANY_CACHE) | REM |
282 P(SNOOP, HIT) | P(HOPS, 2);
283 else if (sub_idx == 1)
284 ret = PH(LVL, REM_CCE1) | LEVEL(ANY_CACHE) | REM |
285 P(SNOOP, HITM) | P(HOPS, 2);
286 else if (sub_idx == 2)
287 ret = PH(LVL, REM_CCE2) | LEVEL(ANY_CACHE) | REM |
288 P(SNOOP, HIT) | P(HOPS, 3);
289 else if (sub_idx == 3)
290 ret = PH(LVL, REM_CCE2) | LEVEL(ANY_CACHE) | REM |
291 P(SNOOP, HITM) | P(HOPS, 3);
293 ret = PH(LVL, REM_CCE2);
294 if (sub_idx == 0 || sub_idx == 2)
295 ret |= P(SNOOP, HIT);
296 else if (sub_idx == 1 || sub_idx == 3)
297 ret |= P(SNOOP, HITM);
308 void isa207_get_mem_data_src(union perf_mem_data_src *dsrc, u32 flags,
309 struct pt_regs *regs)
316 /* Skip if no SIER support */
317 if (!(flags & PPMU_HAS_SIER)) {
322 sier = mfspr(SPRN_SIER);
323 val = (sier & ISA207_SIER_TYPE_MASK) >> ISA207_SIER_TYPE_SHIFT;
324 if (val != 1 && val != 2 && !(val == 7 && cpu_has_feature(CPU_FTR_ARCH_31)))
327 idx = (sier & ISA207_SIER_LDST_MASK) >> ISA207_SIER_LDST_SHIFT;
328 sub_idx = (sier & ISA207_SIER_DATA_SRC_MASK) >> ISA207_SIER_DATA_SRC_SHIFT;
330 dsrc->val = isa207_find_source(idx, sub_idx);
336 * Type 0b111 denotes either larx or stcx instruction. Use the
337 * MMCRA sampling bits [57:59] along with the type value
338 * to determine the exact instruction type. If the sampling
339 * criteria is neither load or store, set the type as default
342 mmcra = mfspr(SPRN_MMCRA);
344 op_type = (mmcra >> MMCRA_SAMP_ELIG_SHIFT) & MMCRA_SAMP_ELIG_MASK;
347 dsrc->val |= P(OP, LOAD);
350 dsrc->val |= P(OP, STORE);
353 dsrc->val |= P(OP, NA);
357 dsrc->val |= (val == 1) ? P(OP, LOAD) : P(OP, STORE);
361 void isa207_get_mem_weight(u64 *weight, u64 type)
363 union perf_sample_weight *weight_fields;
365 u64 mmcra = mfspr(SPRN_MMCRA);
366 u64 exp = MMCRA_THR_CTR_EXP(mmcra);
367 u64 mantissa = MMCRA_THR_CTR_MANT(mmcra);
368 u64 sier = mfspr(SPRN_SIER);
369 u64 val = (sier & ISA207_SIER_TYPE_MASK) >> ISA207_SIER_TYPE_SHIFT;
371 if (cpu_has_feature(CPU_FTR_ARCH_31))
372 mantissa = P10_MMCRA_THR_CTR_MANT(mmcra);
374 if (val == 0 || (val == 7 && !cpu_has_feature(CPU_FTR_ARCH_31)))
377 weight_lat = mantissa << (2 * exp);
380 * Use 64 bit weight field (full) if sample type is
383 * if sample type is WEIGHT_STRUCT:
384 * - store memory latency in the lower 32 bits.
385 * - For ISA v3.1, use remaining two 16 bit fields of
386 * perf_sample_weight to store cycle counter values
389 weight_fields = (union perf_sample_weight *)weight;
390 if (type & PERF_SAMPLE_WEIGHT)
391 weight_fields->full = weight_lat;
393 weight_fields->var1_dw = (u32)weight_lat;
394 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
395 weight_fields->var2_w = P10_SIER2_FINISH_CYC(mfspr(SPRN_SIER2));
396 weight_fields->var3_w = P10_SIER2_DISPATCH_CYC(mfspr(SPRN_SIER2));
401 int isa207_get_constraint(u64 event, unsigned long *maskp, unsigned long *valp, u64 event_config1)
403 unsigned int unit, pmc, cache, ebb;
404 unsigned long mask, value;
408 if (!is_event_valid(event))
411 pmc = (event >> EVENT_PMC_SHIFT) & EVENT_PMC_MASK;
412 unit = (event >> EVENT_UNIT_SHIFT) & EVENT_UNIT_MASK;
413 if (cpu_has_feature(CPU_FTR_ARCH_31))
414 cache = (event >> EVENT_CACHE_SEL_SHIFT) &
415 p10_EVENT_CACHE_SEL_MASK;
417 cache = (event >> EVENT_CACHE_SEL_SHIFT) &
418 EVENT_CACHE_SEL_MASK;
419 ebb = (event >> EVENT_EBB_SHIFT) & EVENT_EBB_MASK;
427 /* Ignore Linux defined bits when checking event below */
428 base_event = event & ~EVENT_LINUX_MASK;
430 if (pmc >= 5 && base_event != 0x500fa &&
431 base_event != 0x600f4)
434 mask |= CNST_PMC_MASK(pmc);
435 value |= CNST_PMC_VAL(pmc);
438 * PMC5 and PMC6 are used to count cycles and instructions and
439 * they do not support most of the constraint bits. Add a check
440 * to exclude PMC5/6 from most of the constraints except for
449 * Add to number of counters in use. Note this includes events with
450 * a PMC of 0 - they still need a PMC, it's just assigned later.
451 * Don't count events on PMC 5 & 6, there is only one valid event
452 * on each of those counters, and they are handled above.
454 mask |= CNST_NC_MASK;
455 value |= CNST_NC_VAL;
458 if (unit >= 6 && unit <= 9) {
459 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
461 mask |= CNST_L2L3_GROUP_MASK;
462 value |= CNST_L2L3_GROUP_VAL(event >> p10_L2L3_EVENT_SHIFT);
464 } else if (cpu_has_feature(CPU_FTR_ARCH_300)) {
465 mask |= CNST_CACHE_GROUP_MASK;
466 value |= CNST_CACHE_GROUP_VAL(event & 0xff);
468 mask |= CNST_CACHE_PMC4_MASK;
470 value |= CNST_CACHE_PMC4_VAL;
471 } else if (cache & 0x7) {
473 * L2/L3 events contain a cache selector field, which is
474 * supposed to be programmed into MMCRC. However MMCRC is only
475 * HV writable, and there is no API for guest kernels to modify
476 * it. The solution is for the hypervisor to initialise the
477 * field to zeroes, and for us to only ever allow events that
478 * have a cache selector of zero. The bank selector (bit 3) is
479 * irrelevant, as long as the rest of the value is 0.
484 } else if (cpu_has_feature(CPU_FTR_ARCH_300) || (event & EVENT_IS_L1)) {
485 mask |= CNST_L1_QUAL_MASK;
486 value |= CNST_L1_QUAL_VAL(cache);
489 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
490 mask |= CNST_RADIX_SCOPE_GROUP_MASK;
491 value |= CNST_RADIX_SCOPE_GROUP_VAL(event >> p10_EVENT_RADIX_SCOPE_QUAL_SHIFT);
494 if (is_event_marked(event)) {
495 mask |= CNST_SAMPLE_MASK;
496 value |= CNST_SAMPLE_VAL(event >> EVENT_SAMPLE_SHIFT);
499 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
500 if (event_is_threshold(event) && is_thresh_cmp_valid(event_config1)) {
501 mask |= CNST_THRESH_CTL_SEL_MASK;
502 value |= CNST_THRESH_CTL_SEL_VAL(event >> EVENT_THRESH_SHIFT);
503 mask |= p10_CNST_THRESH_CMP_MASK;
504 value |= p10_CNST_THRESH_CMP_VAL(p10_thresh_cmp_val(event_config1));
505 } else if (event_is_threshold(event))
507 } else if (cpu_has_feature(CPU_FTR_ARCH_300)) {
508 if (event_is_threshold(event) && is_thresh_cmp_valid(event)) {
509 mask |= CNST_THRESH_MASK;
510 value |= CNST_THRESH_VAL(event >> EVENT_THRESH_SHIFT);
511 } else if (event_is_threshold(event))
515 * Special case for PM_MRK_FAB_RSP_MATCH and PM_MRK_FAB_RSP_MATCH_CYC,
516 * the threshold control bits are used for the match value.
518 if (event_is_fab_match(event)) {
519 mask |= CNST_FAB_MATCH_MASK;
520 value |= CNST_FAB_MATCH_VAL(event >> EVENT_THR_CTL_SHIFT);
522 if (!is_thresh_cmp_valid(event))
525 mask |= CNST_THRESH_MASK;
526 value |= CNST_THRESH_VAL(event >> EVENT_THRESH_SHIFT);
532 /* EBB events must specify the PMC */
535 if (event & EVENT_WANTS_BHRB) {
537 /* Only EBB events can request BHRB */
540 mask |= CNST_IFM_MASK;
541 value |= CNST_IFM_VAL(event >> EVENT_IFM_SHIFT);
545 * All events must agree on EBB, either all request it or none.
546 * EBB events are pinned & exclusive, so this should never actually
547 * hit, but we leave it as a fallback in case.
549 mask |= CNST_EBB_MASK;
550 value |= CNST_EBB_VAL(ebb);
558 int isa207_compute_mmcr(u64 event[], int n_ev,
559 unsigned int hwc[], struct mmcr_regs *mmcr,
560 struct perf_event *pevents[], u32 flags)
562 unsigned long mmcra, mmcr1, mmcr2, unit, combine, psel, cache, val;
564 unsigned int pmc, pmc_inuse;
569 /* First pass to count resource use */
570 for (i = 0; i < n_ev; ++i) {
571 pmc = (event[i] >> EVENT_PMC_SHIFT) & EVENT_PMC_MASK;
573 pmc_inuse |= 1 << pmc;
576 mmcra = mmcr1 = mmcr2 = mmcr3 = 0;
579 * Disable bhrb unless explicitly requested
580 * by setting MMCRA (BHRBRD) bit.
582 if (cpu_has_feature(CPU_FTR_ARCH_31))
583 mmcra |= MMCRA_BHRB_DISABLE;
585 /* Second pass: assign PMCs, set all MMCR1 fields */
586 for (i = 0; i < n_ev; ++i) {
587 pmc = (event[i] >> EVENT_PMC_SHIFT) & EVENT_PMC_MASK;
588 unit = (event[i] >> EVENT_UNIT_SHIFT) & EVENT_UNIT_MASK;
589 combine = combine_from_event(event[i]);
590 psel = event[i] & EVENT_PSEL_MASK;
593 for (pmc = 1; pmc <= 4; ++pmc) {
594 if (!(pmc_inuse & (1 << pmc)))
598 pmc_inuse |= 1 << pmc;
602 mmcr1 |= unit << MMCR1_UNIT_SHIFT(pmc);
603 mmcr1 |= combine << combine_shift(pmc);
604 mmcr1 |= psel << MMCR1_PMCSEL_SHIFT(pmc);
607 /* In continuous sampling mode, update SDAR on TLB miss */
608 mmcra_sdar_mode(event[i], &mmcra);
610 if (cpu_has_feature(CPU_FTR_ARCH_300)) {
611 cache = dc_ic_rld_quad_l1_sel(event[i]);
612 mmcr1 |= (cache) << MMCR1_DC_IC_QUAL_SHIFT;
614 if (event[i] & EVENT_IS_L1) {
615 cache = dc_ic_rld_quad_l1_sel(event[i]);
616 mmcr1 |= (cache) << MMCR1_DC_IC_QUAL_SHIFT;
620 /* Set RADIX_SCOPE_QUAL bit */
621 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
622 val = (event[i] >> p10_EVENT_RADIX_SCOPE_QUAL_SHIFT) &
623 p10_EVENT_RADIX_SCOPE_QUAL_MASK;
624 mmcr1 |= val << p10_MMCR1_RADIX_SCOPE_QUAL_SHIFT;
627 if (is_event_marked(event[i])) {
628 mmcra |= MMCRA_SAMPLE_ENABLE;
630 val = (event[i] >> EVENT_SAMPLE_SHIFT) & EVENT_SAMPLE_MASK;
632 mmcra |= (val & 3) << MMCRA_SAMP_MODE_SHIFT;
633 mmcra |= (val >> 2) << MMCRA_SAMP_ELIG_SHIFT;
638 * PM_MRK_FAB_RSP_MATCH and PM_MRK_FAB_RSP_MATCH_CYC,
639 * the threshold bits are used for the match value.
641 if (!cpu_has_feature(CPU_FTR_ARCH_300) && event_is_fab_match(event[i])) {
642 mmcr1 |= ((event[i] >> EVENT_THR_CTL_SHIFT) &
643 EVENT_THR_CTL_MASK) << MMCR1_FAB_SHIFT;
645 val = (event[i] >> EVENT_THR_CTL_SHIFT) & EVENT_THR_CTL_MASK;
646 mmcra |= val << MMCRA_THR_CTL_SHIFT;
647 val = (event[i] >> EVENT_THR_SEL_SHIFT) & EVENT_THR_SEL_MASK;
648 mmcra |= val << MMCRA_THR_SEL_SHIFT;
649 if (!cpu_has_feature(CPU_FTR_ARCH_31)) {
650 val = (event[i] >> EVENT_THR_CMP_SHIFT) &
652 mmcra |= thresh_cmp_val(val);
653 } else if (flags & PPMU_HAS_ATTR_CONFIG1) {
654 val = (pevents[i]->attr.config1 >> p10_EVENT_THR_CMP_SHIFT) &
655 p10_EVENT_THR_CMP_MASK;
656 mmcra |= thresh_cmp_val(val);
660 if (cpu_has_feature(CPU_FTR_ARCH_31) && (unit == 6)) {
661 val = (event[i] >> p10_L2L3_EVENT_SHIFT) &
662 p10_EVENT_L2L3_SEL_MASK;
663 mmcr2 |= val << p10_L2L3_SEL_SHIFT;
666 if (event[i] & EVENT_WANTS_BHRB) {
667 val = (event[i] >> EVENT_IFM_SHIFT) & EVENT_IFM_MASK;
668 mmcra |= val << MMCRA_IFM_SHIFT;
671 /* set MMCRA (BHRBRD) to 0 if there is user request for BHRB */
672 if (cpu_has_feature(CPU_FTR_ARCH_31) &&
673 (has_branch_stack(pevents[i]) || (event[i] & EVENT_WANTS_BHRB)))
674 mmcra &= ~MMCRA_BHRB_DISABLE;
676 if (pevents[i]->attr.exclude_user)
677 mmcr2 |= MMCR2_FCP(pmc);
679 if (pevents[i]->attr.exclude_hv)
680 mmcr2 |= MMCR2_FCH(pmc);
682 if (pevents[i]->attr.exclude_kernel) {
683 if (cpu_has_feature(CPU_FTR_HVMODE))
684 mmcr2 |= MMCR2_FCH(pmc);
686 mmcr2 |= MMCR2_FCS(pmc);
689 if (pevents[i]->attr.exclude_idle)
690 mmcr2 |= MMCR2_FCWAIT(pmc);
692 if (cpu_has_feature(CPU_FTR_ARCH_31)) {
694 val = (event[i] >> p10_EVENT_MMCR3_SHIFT) &
695 p10_EVENT_MMCR3_MASK;
696 mmcr3 |= val << MMCR3_SHIFT(pmc);
703 /* Return MMCRx values */
706 /* pmc_inuse is 1-based */
708 mmcr->mmcr0 = MMCR0_PMC1CE;
710 if (pmc_inuse & 0x7c)
711 mmcr->mmcr0 |= MMCR0_PMCjCE;
713 /* If we're not using PMC 5 or 6, freeze them */
714 if (!(pmc_inuse & 0x60))
715 mmcr->mmcr0 |= MMCR0_FC56;
718 * Set mmcr0 (PMCCEXT) for p10 which
719 * will restrict access to group B registers
720 * when MMCR0 PMCC=0b00.
722 if (cpu_has_feature(CPU_FTR_ARCH_31))
723 mmcr->mmcr0 |= MMCR0_PMCCEXT;
733 void isa207_disable_pmc(unsigned int pmc, struct mmcr_regs *mmcr)
736 mmcr->mmcr1 &= ~(0xffUL << MMCR1_PMCSEL_SHIFT(pmc + 1));
739 static int find_alternative(u64 event, const unsigned int ev_alt[][MAX_ALT], int size)
743 for (i = 0; i < size; ++i) {
744 if (event < ev_alt[i][0])
747 for (j = 0; j < MAX_ALT && ev_alt[i][j]; ++j)
748 if (event == ev_alt[i][j])
755 int isa207_get_alternatives(u64 event, u64 alt[], int size, unsigned int flags,
756 const unsigned int ev_alt[][MAX_ALT])
758 int i, j, num_alt = 0;
761 alt[num_alt++] = event;
762 i = find_alternative(event, ev_alt, size);
764 /* Filter out the original event, it's already in alt[0] */
765 for (j = 0; j < MAX_ALT; ++j) {
766 alt_event = ev_alt[i][j];
767 if (alt_event && alt_event != event)
768 alt[num_alt++] = alt_event;
772 if (flags & PPMU_ONLY_COUNT_RUN) {
774 * We're only counting in RUN state, so PM_CYC is equivalent to
775 * PM_RUN_CYC and PM_INST_CMPL === PM_RUN_INST_CMPL.
778 for (i = 0; i < num_alt; ++i) {
780 case 0x1e: /* PMC_CYC */
781 alt[j++] = 0x600f4; /* PM_RUN_CYC */
786 case 0x2: /* PM_INST_CMPL */
787 alt[j++] = 0x500fa; /* PM_RUN_INST_CMPL */
800 int isa3XX_check_attr_config(struct perf_event *ev)
802 u64 val, sample_mode;
803 u64 event = ev->attr.config;
805 val = (event >> EVENT_SAMPLE_SHIFT) & EVENT_SAMPLE_MASK;
806 sample_mode = val & 0x3;
809 * MMCRA[61:62] is Random Sampling Mode (SM).
810 * value of 0b11 is reserved.
812 if (sample_mode == 0x3)
816 * Check for all reserved value
817 * Source: Performance Monitoring Unit User Guide
831 * MMCRA[48:51]/[52:55]) Threshold Start/Stop
833 * 0b11110000/0b00001111 is reserved.
835 val = (event >> EVENT_THR_CTL_SHIFT) & EVENT_THR_CTL_MASK;
836 if (((val & 0xF0) == 0xF0) || ((val & 0xF) == 0xF))