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11#include <asm/irq_regs.h>
12#include <asm/perf_event.h>
13#include <asm/sysreg.h>
14#include <asm/virt.h>
15
16#include <linux/acpi.h>
17#include <linux/clocksource.h>
18#include <linux/kvm_host.h>
19#include <linux/of.h>
20#include <linux/perf/arm_pmu.h>
21#include <linux/platform_device.h>
22#include <linux/smp.h>
23
24
25#define ARMV8_A53_PERFCTR_PREF_LINEFILL 0xC2
26
27
28#define ARMV8_THUNDER_PERFCTR_L1D_CACHE_MISS_ST 0xE9
29#define ARMV8_THUNDER_PERFCTR_L1D_CACHE_PREF_ACCESS 0xEA
30#define ARMV8_THUNDER_PERFCTR_L1D_CACHE_PREF_MISS 0xEB
31#define ARMV8_THUNDER_PERFCTR_L1I_CACHE_PREF_ACCESS 0xEC
32#define ARMV8_THUNDER_PERFCTR_L1I_CACHE_PREF_MISS 0xED
33
34
35
36
37
38
39static const unsigned armv8_pmuv3_perf_map[PERF_COUNT_HW_MAX] = {
40 PERF_MAP_ALL_UNSUPPORTED,
41 [PERF_COUNT_HW_CPU_CYCLES] = ARMV8_PMUV3_PERFCTR_CPU_CYCLES,
42 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV8_PMUV3_PERFCTR_INST_RETIRED,
43 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV8_PMUV3_PERFCTR_L1D_CACHE,
44 [PERF_COUNT_HW_CACHE_MISSES] = ARMV8_PMUV3_PERFCTR_L1D_CACHE_REFILL,
45 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV8_PMUV3_PERFCTR_PC_WRITE_RETIRED,
46 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV8_PMUV3_PERFCTR_BR_MIS_PRED,
47 [PERF_COUNT_HW_BUS_CYCLES] = ARMV8_PMUV3_PERFCTR_BUS_CYCLES,
48 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = ARMV8_PMUV3_PERFCTR_STALL_FRONTEND,
49 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = ARMV8_PMUV3_PERFCTR_STALL_BACKEND,
50};
51
52static const unsigned armv8_pmuv3_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
53 [PERF_COUNT_HW_CACHE_OP_MAX]
54 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
55 PERF_CACHE_MAP_ALL_UNSUPPORTED,
56
57 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_PMUV3_PERFCTR_L1D_CACHE,
58 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_PMUV3_PERFCTR_L1D_CACHE_REFILL,
59
60 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_PMUV3_PERFCTR_L1I_CACHE,
61 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_PMUV3_PERFCTR_L1I_CACHE_REFILL,
62
63 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_PMUV3_PERFCTR_L1D_TLB_REFILL,
64 [C(DTLB)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_PMUV3_PERFCTR_L1D_TLB,
65
66 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_PMUV3_PERFCTR_L1I_TLB_REFILL,
67 [C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_PMUV3_PERFCTR_L1I_TLB,
68
69 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_PMUV3_PERFCTR_BR_PRED,
70 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_PMUV3_PERFCTR_BR_MIS_PRED,
71};
72
73static const unsigned armv8_a53_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
74 [PERF_COUNT_HW_CACHE_OP_MAX]
75 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
76 PERF_CACHE_MAP_ALL_UNSUPPORTED,
77
78 [C(L1D)][C(OP_PREFETCH)][C(RESULT_MISS)] = ARMV8_A53_PERFCTR_PREF_LINEFILL,
79
80 [C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_RD,
81 [C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR,
82};
83
84static const unsigned armv8_a57_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
85 [PERF_COUNT_HW_CACHE_OP_MAX]
86 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
87 PERF_CACHE_MAP_ALL_UNSUPPORTED,
88
89 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_RD,
90 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_REFILL_RD,
91 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_WR,
92 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_REFILL_WR,
93
94 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_RD,
95 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_WR,
96
97 [C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_RD,
98 [C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR,
99};
100
101static const unsigned armv8_a73_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
102 [PERF_COUNT_HW_CACHE_OP_MAX]
103 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
104 PERF_CACHE_MAP_ALL_UNSUPPORTED,
105
106 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_RD,
107 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_WR,
108};
109
110static const unsigned armv8_thunder_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
111 [PERF_COUNT_HW_CACHE_OP_MAX]
112 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
113 PERF_CACHE_MAP_ALL_UNSUPPORTED,
114
115 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_RD,
116 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_REFILL_RD,
117 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_WR,
118 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV8_THUNDER_PERFCTR_L1D_CACHE_MISS_ST,
119 [C(L1D)][C(OP_PREFETCH)][C(RESULT_ACCESS)] = ARMV8_THUNDER_PERFCTR_L1D_CACHE_PREF_ACCESS,
120 [C(L1D)][C(OP_PREFETCH)][C(RESULT_MISS)] = ARMV8_THUNDER_PERFCTR_L1D_CACHE_PREF_MISS,
121
122 [C(L1I)][C(OP_PREFETCH)][C(RESULT_ACCESS)] = ARMV8_THUNDER_PERFCTR_L1I_CACHE_PREF_ACCESS,
123 [C(L1I)][C(OP_PREFETCH)][C(RESULT_MISS)] = ARMV8_THUNDER_PERFCTR_L1I_CACHE_PREF_MISS,
124
125 [C(DTLB)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_RD,
126 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_RD,
127 [C(DTLB)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_WR,
128 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_WR,
129};
130
131static const unsigned armv8_vulcan_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
132 [PERF_COUNT_HW_CACHE_OP_MAX]
133 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
134 PERF_CACHE_MAP_ALL_UNSUPPORTED,
135
136 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_RD,
137 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_REFILL_RD,
138 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_WR,
139 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_REFILL_WR,
140
141 [C(DTLB)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_RD,
142 [C(DTLB)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_WR,
143 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_RD,
144 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV8_IMPDEF_PERFCTR_L1D_TLB_REFILL_WR,
145
146 [C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_RD,
147 [C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR,
148};
149
150static ssize_t
151armv8pmu_events_sysfs_show(struct device *dev,
152 struct device_attribute *attr, char *page)
153{
154 struct perf_pmu_events_attr *pmu_attr;
155
156 pmu_attr = container_of(attr, struct perf_pmu_events_attr, attr);
157
158 return sprintf(page, "event=0x%03llx\n", pmu_attr->id);
159}
160
161#define ARMV8_EVENT_ATTR(name, config) \
162 (&((struct perf_pmu_events_attr) { \
163 .attr = __ATTR(name, 0444, armv8pmu_events_sysfs_show, NULL), \
164 .id = config, \
165 }).attr.attr)
166
167static struct attribute *armv8_pmuv3_event_attrs[] = {
168 ARMV8_EVENT_ATTR(sw_incr, ARMV8_PMUV3_PERFCTR_SW_INCR),
169 ARMV8_EVENT_ATTR(l1i_cache_refill, ARMV8_PMUV3_PERFCTR_L1I_CACHE_REFILL),
170 ARMV8_EVENT_ATTR(l1i_tlb_refill, ARMV8_PMUV3_PERFCTR_L1I_TLB_REFILL),
171 ARMV8_EVENT_ATTR(l1d_cache_refill, ARMV8_PMUV3_PERFCTR_L1D_CACHE_REFILL),
172 ARMV8_EVENT_ATTR(l1d_cache, ARMV8_PMUV3_PERFCTR_L1D_CACHE),
173 ARMV8_EVENT_ATTR(l1d_tlb_refill, ARMV8_PMUV3_PERFCTR_L1D_TLB_REFILL),
174 ARMV8_EVENT_ATTR(ld_retired, ARMV8_PMUV3_PERFCTR_LD_RETIRED),
175 ARMV8_EVENT_ATTR(st_retired, ARMV8_PMUV3_PERFCTR_ST_RETIRED),
176 ARMV8_EVENT_ATTR(inst_retired, ARMV8_PMUV3_PERFCTR_INST_RETIRED),
177 ARMV8_EVENT_ATTR(exc_taken, ARMV8_PMUV3_PERFCTR_EXC_TAKEN),
178 ARMV8_EVENT_ATTR(exc_return, ARMV8_PMUV3_PERFCTR_EXC_RETURN),
179 ARMV8_EVENT_ATTR(cid_write_retired, ARMV8_PMUV3_PERFCTR_CID_WRITE_RETIRED),
180 ARMV8_EVENT_ATTR(pc_write_retired, ARMV8_PMUV3_PERFCTR_PC_WRITE_RETIRED),
181 ARMV8_EVENT_ATTR(br_immed_retired, ARMV8_PMUV3_PERFCTR_BR_IMMED_RETIRED),
182 ARMV8_EVENT_ATTR(br_return_retired, ARMV8_PMUV3_PERFCTR_BR_RETURN_RETIRED),
183 ARMV8_EVENT_ATTR(unaligned_ldst_retired, ARMV8_PMUV3_PERFCTR_UNALIGNED_LDST_RETIRED),
184 ARMV8_EVENT_ATTR(br_mis_pred, ARMV8_PMUV3_PERFCTR_BR_MIS_PRED),
185 ARMV8_EVENT_ATTR(cpu_cycles, ARMV8_PMUV3_PERFCTR_CPU_CYCLES),
186 ARMV8_EVENT_ATTR(br_pred, ARMV8_PMUV3_PERFCTR_BR_PRED),
187 ARMV8_EVENT_ATTR(mem_access, ARMV8_PMUV3_PERFCTR_MEM_ACCESS),
188 ARMV8_EVENT_ATTR(l1i_cache, ARMV8_PMUV3_PERFCTR_L1I_CACHE),
189 ARMV8_EVENT_ATTR(l1d_cache_wb, ARMV8_PMUV3_PERFCTR_L1D_CACHE_WB),
190 ARMV8_EVENT_ATTR(l2d_cache, ARMV8_PMUV3_PERFCTR_L2D_CACHE),
191 ARMV8_EVENT_ATTR(l2d_cache_refill, ARMV8_PMUV3_PERFCTR_L2D_CACHE_REFILL),
192 ARMV8_EVENT_ATTR(l2d_cache_wb, ARMV8_PMUV3_PERFCTR_L2D_CACHE_WB),
193 ARMV8_EVENT_ATTR(bus_access, ARMV8_PMUV3_PERFCTR_BUS_ACCESS),
194 ARMV8_EVENT_ATTR(memory_error, ARMV8_PMUV3_PERFCTR_MEMORY_ERROR),
195 ARMV8_EVENT_ATTR(inst_spec, ARMV8_PMUV3_PERFCTR_INST_SPEC),
196 ARMV8_EVENT_ATTR(ttbr_write_retired, ARMV8_PMUV3_PERFCTR_TTBR_WRITE_RETIRED),
197 ARMV8_EVENT_ATTR(bus_cycles, ARMV8_PMUV3_PERFCTR_BUS_CYCLES),
198
199 ARMV8_EVENT_ATTR(l1d_cache_allocate, ARMV8_PMUV3_PERFCTR_L1D_CACHE_ALLOCATE),
200 ARMV8_EVENT_ATTR(l2d_cache_allocate, ARMV8_PMUV3_PERFCTR_L2D_CACHE_ALLOCATE),
201 ARMV8_EVENT_ATTR(br_retired, ARMV8_PMUV3_PERFCTR_BR_RETIRED),
202 ARMV8_EVENT_ATTR(br_mis_pred_retired, ARMV8_PMUV3_PERFCTR_BR_MIS_PRED_RETIRED),
203 ARMV8_EVENT_ATTR(stall_frontend, ARMV8_PMUV3_PERFCTR_STALL_FRONTEND),
204 ARMV8_EVENT_ATTR(stall_backend, ARMV8_PMUV3_PERFCTR_STALL_BACKEND),
205 ARMV8_EVENT_ATTR(l1d_tlb, ARMV8_PMUV3_PERFCTR_L1D_TLB),
206 ARMV8_EVENT_ATTR(l1i_tlb, ARMV8_PMUV3_PERFCTR_L1I_TLB),
207 ARMV8_EVENT_ATTR(l2i_cache, ARMV8_PMUV3_PERFCTR_L2I_CACHE),
208 ARMV8_EVENT_ATTR(l2i_cache_refill, ARMV8_PMUV3_PERFCTR_L2I_CACHE_REFILL),
209 ARMV8_EVENT_ATTR(l3d_cache_allocate, ARMV8_PMUV3_PERFCTR_L3D_CACHE_ALLOCATE),
210 ARMV8_EVENT_ATTR(l3d_cache_refill, ARMV8_PMUV3_PERFCTR_L3D_CACHE_REFILL),
211 ARMV8_EVENT_ATTR(l3d_cache, ARMV8_PMUV3_PERFCTR_L3D_CACHE),
212 ARMV8_EVENT_ATTR(l3d_cache_wb, ARMV8_PMUV3_PERFCTR_L3D_CACHE_WB),
213 ARMV8_EVENT_ATTR(l2d_tlb_refill, ARMV8_PMUV3_PERFCTR_L2D_TLB_REFILL),
214 ARMV8_EVENT_ATTR(l2i_tlb_refill, ARMV8_PMUV3_PERFCTR_L2I_TLB_REFILL),
215 ARMV8_EVENT_ATTR(l2d_tlb, ARMV8_PMUV3_PERFCTR_L2D_TLB),
216 ARMV8_EVENT_ATTR(l2i_tlb, ARMV8_PMUV3_PERFCTR_L2I_TLB),
217 ARMV8_EVENT_ATTR(remote_access, ARMV8_PMUV3_PERFCTR_REMOTE_ACCESS),
218 ARMV8_EVENT_ATTR(ll_cache, ARMV8_PMUV3_PERFCTR_LL_CACHE),
219 ARMV8_EVENT_ATTR(ll_cache_miss, ARMV8_PMUV3_PERFCTR_LL_CACHE_MISS),
220 ARMV8_EVENT_ATTR(dtlb_walk, ARMV8_PMUV3_PERFCTR_DTLB_WALK),
221 ARMV8_EVENT_ATTR(itlb_walk, ARMV8_PMUV3_PERFCTR_ITLB_WALK),
222 ARMV8_EVENT_ATTR(ll_cache_rd, ARMV8_PMUV3_PERFCTR_LL_CACHE_RD),
223 ARMV8_EVENT_ATTR(ll_cache_miss_rd, ARMV8_PMUV3_PERFCTR_LL_CACHE_MISS_RD),
224 ARMV8_EVENT_ATTR(remote_access_rd, ARMV8_PMUV3_PERFCTR_REMOTE_ACCESS_RD),
225 ARMV8_EVENT_ATTR(sample_pop, ARMV8_SPE_PERFCTR_SAMPLE_POP),
226 ARMV8_EVENT_ATTR(sample_feed, ARMV8_SPE_PERFCTR_SAMPLE_FEED),
227 ARMV8_EVENT_ATTR(sample_filtrate, ARMV8_SPE_PERFCTR_SAMPLE_FILTRATE),
228 ARMV8_EVENT_ATTR(sample_collision, ARMV8_SPE_PERFCTR_SAMPLE_COLLISION),
229 NULL,
230};
231
232static umode_t
233armv8pmu_event_attr_is_visible(struct kobject *kobj,
234 struct attribute *attr, int unused)
235{
236 struct device *dev = kobj_to_dev(kobj);
237 struct pmu *pmu = dev_get_drvdata(dev);
238 struct arm_pmu *cpu_pmu = container_of(pmu, struct arm_pmu, pmu);
239 struct perf_pmu_events_attr *pmu_attr;
240
241 pmu_attr = container_of(attr, struct perf_pmu_events_attr, attr.attr);
242
243 if (pmu_attr->id < ARMV8_PMUV3_MAX_COMMON_EVENTS &&
244 test_bit(pmu_attr->id, cpu_pmu->pmceid_bitmap))
245 return attr->mode;
246
247 pmu_attr->id -= ARMV8_PMUV3_EXT_COMMON_EVENT_BASE;
248 if (pmu_attr->id < ARMV8_PMUV3_MAX_COMMON_EVENTS &&
249 test_bit(pmu_attr->id, cpu_pmu->pmceid_ext_bitmap))
250 return attr->mode;
251
252 return 0;
253}
254
255static struct attribute_group armv8_pmuv3_events_attr_group = {
256 .name = "events",
257 .attrs = armv8_pmuv3_event_attrs,
258 .is_visible = armv8pmu_event_attr_is_visible,
259};
260
261PMU_FORMAT_ATTR(event, "config:0-15");
262PMU_FORMAT_ATTR(long, "config1:0");
263
264static inline bool armv8pmu_event_is_64bit(struct perf_event *event)
265{
266 return event->attr.config1 & 0x1;
267}
268
269static struct attribute *armv8_pmuv3_format_attrs[] = {
270 &format_attr_event.attr,
271 &format_attr_long.attr,
272 NULL,
273};
274
275static struct attribute_group armv8_pmuv3_format_attr_group = {
276 .name = "format",
277 .attrs = armv8_pmuv3_format_attrs,
278};
279
280
281
282
283#define ARMV8_IDX_CYCLE_COUNTER 0
284#define ARMV8_IDX_COUNTER0 1
285#define ARMV8_IDX_COUNTER_LAST(cpu_pmu) \
286 (ARMV8_IDX_CYCLE_COUNTER + cpu_pmu->num_events - 1)
287
288
289
290
291
292
293
294static inline bool armv8pmu_event_is_chained(struct perf_event *event)
295{
296 int idx = event->hw.idx;
297
298 return !WARN_ON(idx < 0) &&
299 armv8pmu_event_is_64bit(event) &&
300 (idx != ARMV8_IDX_CYCLE_COUNTER);
301}
302
303
304
305
306
307
308
309
310#define ARMV8_IDX_TO_COUNTER(x) \
311 (((x) - ARMV8_IDX_COUNTER0) & ARMV8_PMU_COUNTER_MASK)
312
313static inline u32 armv8pmu_pmcr_read(void)
314{
315 return read_sysreg(pmcr_el0);
316}
317
318static inline void armv8pmu_pmcr_write(u32 val)
319{
320 val &= ARMV8_PMU_PMCR_MASK;
321 isb();
322 write_sysreg(val, pmcr_el0);
323}
324
325static inline int armv8pmu_has_overflowed(u32 pmovsr)
326{
327 return pmovsr & ARMV8_PMU_OVERFLOWED_MASK;
328}
329
330static inline int armv8pmu_counter_valid(struct arm_pmu *cpu_pmu, int idx)
331{
332 return idx >= ARMV8_IDX_CYCLE_COUNTER &&
333 idx <= ARMV8_IDX_COUNTER_LAST(cpu_pmu);
334}
335
336static inline int armv8pmu_counter_has_overflowed(u32 pmnc, int idx)
337{
338 return pmnc & BIT(ARMV8_IDX_TO_COUNTER(idx));
339}
340
341static inline void armv8pmu_select_counter(int idx)
342{
343 u32 counter = ARMV8_IDX_TO_COUNTER(idx);
344 write_sysreg(counter, pmselr_el0);
345 isb();
346}
347
348static inline u32 armv8pmu_read_evcntr(int idx)
349{
350 armv8pmu_select_counter(idx);
351 return read_sysreg(pmxevcntr_el0);
352}
353
354static inline u64 armv8pmu_read_hw_counter(struct perf_event *event)
355{
356 int idx = event->hw.idx;
357 u64 val = 0;
358
359 val = armv8pmu_read_evcntr(idx);
360 if (armv8pmu_event_is_chained(event))
361 val = (val << 32) | armv8pmu_read_evcntr(idx - 1);
362 return val;
363}
364
365static u64 armv8pmu_read_counter(struct perf_event *event)
366{
367 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
368 struct hw_perf_event *hwc = &event->hw;
369 int idx = hwc->idx;
370 u64 value = 0;
371
372 if (!armv8pmu_counter_valid(cpu_pmu, idx))
373 pr_err("CPU%u reading wrong counter %d\n",
374 smp_processor_id(), idx);
375 else if (idx == ARMV8_IDX_CYCLE_COUNTER)
376 value = read_sysreg(pmccntr_el0);
377 else
378 value = armv8pmu_read_hw_counter(event);
379
380 return value;
381}
382
383static inline void armv8pmu_write_evcntr(int idx, u32 value)
384{
385 armv8pmu_select_counter(idx);
386 write_sysreg(value, pmxevcntr_el0);
387}
388
389static inline void armv8pmu_write_hw_counter(struct perf_event *event,
390 u64 value)
391{
392 int idx = event->hw.idx;
393
394 if (armv8pmu_event_is_chained(event)) {
395 armv8pmu_write_evcntr(idx, upper_32_bits(value));
396 armv8pmu_write_evcntr(idx - 1, lower_32_bits(value));
397 } else {
398 armv8pmu_write_evcntr(idx, value);
399 }
400}
401
402static void armv8pmu_write_counter(struct perf_event *event, u64 value)
403{
404 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
405 struct hw_perf_event *hwc = &event->hw;
406 int idx = hwc->idx;
407
408 if (!armv8pmu_counter_valid(cpu_pmu, idx))
409 pr_err("CPU%u writing wrong counter %d\n",
410 smp_processor_id(), idx);
411 else if (idx == ARMV8_IDX_CYCLE_COUNTER) {
412
413
414
415
416
417
418 if (!armv8pmu_event_is_64bit(event))
419 value |= 0xffffffff00000000ULL;
420 write_sysreg(value, pmccntr_el0);
421 } else
422 armv8pmu_write_hw_counter(event, value);
423}
424
425static inline void armv8pmu_write_evtype(int idx, u32 val)
426{
427 armv8pmu_select_counter(idx);
428 val &= ARMV8_PMU_EVTYPE_MASK;
429 write_sysreg(val, pmxevtyper_el0);
430}
431
432static inline void armv8pmu_write_event_type(struct perf_event *event)
433{
434 struct hw_perf_event *hwc = &event->hw;
435 int idx = hwc->idx;
436
437
438
439
440
441
442 if (armv8pmu_event_is_chained(event)) {
443 u32 chain_evt = ARMV8_PMUV3_PERFCTR_CHAIN |
444 ARMV8_PMU_INCLUDE_EL2;
445
446 armv8pmu_write_evtype(idx - 1, hwc->config_base);
447 armv8pmu_write_evtype(idx, chain_evt);
448 } else {
449 armv8pmu_write_evtype(idx, hwc->config_base);
450 }
451}
452
453static inline int armv8pmu_enable_counter(int idx)
454{
455 u32 counter = ARMV8_IDX_TO_COUNTER(idx);
456 write_sysreg(BIT(counter), pmcntenset_el0);
457 return idx;
458}
459
460static inline void armv8pmu_enable_event_counter(struct perf_event *event)
461{
462 struct perf_event_attr *attr = &event->attr;
463 int idx = event->hw.idx;
464 u32 counter_bits = BIT(ARMV8_IDX_TO_COUNTER(idx));
465
466 if (armv8pmu_event_is_chained(event))
467 counter_bits |= BIT(ARMV8_IDX_TO_COUNTER(idx - 1));
468
469 kvm_set_pmu_events(counter_bits, attr);
470
471
472 if (!kvm_pmu_counter_deferred(attr)) {
473 armv8pmu_enable_counter(idx);
474 if (armv8pmu_event_is_chained(event))
475 armv8pmu_enable_counter(idx - 1);
476 }
477}
478
479static inline int armv8pmu_disable_counter(int idx)
480{
481 u32 counter = ARMV8_IDX_TO_COUNTER(idx);
482 write_sysreg(BIT(counter), pmcntenclr_el0);
483 return idx;
484}
485
486static inline void armv8pmu_disable_event_counter(struct perf_event *event)
487{
488 struct hw_perf_event *hwc = &event->hw;
489 struct perf_event_attr *attr = &event->attr;
490 int idx = hwc->idx;
491 u32 counter_bits = BIT(ARMV8_IDX_TO_COUNTER(idx));
492
493 if (armv8pmu_event_is_chained(event))
494 counter_bits |= BIT(ARMV8_IDX_TO_COUNTER(idx - 1));
495
496 kvm_clr_pmu_events(counter_bits);
497
498
499 if (!kvm_pmu_counter_deferred(attr)) {
500 if (armv8pmu_event_is_chained(event))
501 armv8pmu_disable_counter(idx - 1);
502 armv8pmu_disable_counter(idx);
503 }
504}
505
506static inline int armv8pmu_enable_intens(int idx)
507{
508 u32 counter = ARMV8_IDX_TO_COUNTER(idx);
509 write_sysreg(BIT(counter), pmintenset_el1);
510 return idx;
511}
512
513static inline int armv8pmu_enable_event_irq(struct perf_event *event)
514{
515 return armv8pmu_enable_intens(event->hw.idx);
516}
517
518static inline int armv8pmu_disable_intens(int idx)
519{
520 u32 counter = ARMV8_IDX_TO_COUNTER(idx);
521 write_sysreg(BIT(counter), pmintenclr_el1);
522 isb();
523
524 write_sysreg(BIT(counter), pmovsclr_el0);
525 isb();
526
527 return idx;
528}
529
530static inline int armv8pmu_disable_event_irq(struct perf_event *event)
531{
532 return armv8pmu_disable_intens(event->hw.idx);
533}
534
535static inline u32 armv8pmu_getreset_flags(void)
536{
537 u32 value;
538
539
540 value = read_sysreg(pmovsclr_el0);
541
542
543 value &= ARMV8_PMU_OVSR_MASK;
544 write_sysreg(value, pmovsclr_el0);
545
546 return value;
547}
548
549static void armv8pmu_enable_event(struct perf_event *event)
550{
551 unsigned long flags;
552 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
553 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
554
555
556
557
558
559 raw_spin_lock_irqsave(&events->pmu_lock, flags);
560
561
562
563
564 armv8pmu_disable_event_counter(event);
565
566
567
568
569 armv8pmu_write_event_type(event);
570
571
572
573
574 armv8pmu_enable_event_irq(event);
575
576
577
578
579 armv8pmu_enable_event_counter(event);
580
581 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
582}
583
584static void armv8pmu_disable_event(struct perf_event *event)
585{
586 unsigned long flags;
587 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
588 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
589
590
591
592
593 raw_spin_lock_irqsave(&events->pmu_lock, flags);
594
595
596
597
598 armv8pmu_disable_event_counter(event);
599
600
601
602
603 armv8pmu_disable_event_irq(event);
604
605 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
606}
607
608static void armv8pmu_start(struct arm_pmu *cpu_pmu)
609{
610 unsigned long flags;
611 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
612
613 raw_spin_lock_irqsave(&events->pmu_lock, flags);
614
615 armv8pmu_pmcr_write(armv8pmu_pmcr_read() | ARMV8_PMU_PMCR_E);
616 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
617}
618
619static void armv8pmu_stop(struct arm_pmu *cpu_pmu)
620{
621 unsigned long flags;
622 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
623
624 raw_spin_lock_irqsave(&events->pmu_lock, flags);
625
626 armv8pmu_pmcr_write(armv8pmu_pmcr_read() & ~ARMV8_PMU_PMCR_E);
627 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
628}
629
630static irqreturn_t armv8pmu_handle_irq(struct arm_pmu *cpu_pmu)
631{
632 u32 pmovsr;
633 struct perf_sample_data data;
634 struct pmu_hw_events *cpuc = this_cpu_ptr(cpu_pmu->hw_events);
635 struct pt_regs *regs;
636 int idx;
637
638
639
640
641 pmovsr = armv8pmu_getreset_flags();
642
643
644
645
646 if (!armv8pmu_has_overflowed(pmovsr))
647 return IRQ_NONE;
648
649
650
651
652 regs = get_irq_regs();
653
654
655
656
657
658 armv8pmu_stop(cpu_pmu);
659 for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
660 struct perf_event *event = cpuc->events[idx];
661 struct hw_perf_event *hwc;
662
663
664 if (!event)
665 continue;
666
667
668
669
670
671 if (!armv8pmu_counter_has_overflowed(pmovsr, idx))
672 continue;
673
674 hwc = &event->hw;
675 armpmu_event_update(event);
676 perf_sample_data_init(&data, 0, hwc->last_period);
677 if (!armpmu_event_set_period(event))
678 continue;
679
680 if (perf_event_overflow(event, &data, regs))
681 cpu_pmu->disable(event);
682 }
683 armv8pmu_start(cpu_pmu);
684
685
686
687
688
689
690
691
692 irq_work_run();
693
694 return IRQ_HANDLED;
695}
696
697static int armv8pmu_get_single_idx(struct pmu_hw_events *cpuc,
698 struct arm_pmu *cpu_pmu)
699{
700 int idx;
701
702 for (idx = ARMV8_IDX_COUNTER0; idx < cpu_pmu->num_events; idx ++) {
703 if (!test_and_set_bit(idx, cpuc->used_mask))
704 return idx;
705 }
706 return -EAGAIN;
707}
708
709static int armv8pmu_get_chain_idx(struct pmu_hw_events *cpuc,
710 struct arm_pmu *cpu_pmu)
711{
712 int idx;
713
714
715
716
717
718 for (idx = ARMV8_IDX_COUNTER0 + 1; idx < cpu_pmu->num_events; idx += 2) {
719 if (!test_and_set_bit(idx, cpuc->used_mask)) {
720
721 if (!test_and_set_bit(idx - 1, cpuc->used_mask))
722 return idx;
723
724 clear_bit(idx, cpuc->used_mask);
725 }
726 }
727 return -EAGAIN;
728}
729
730static int armv8pmu_get_event_idx(struct pmu_hw_events *cpuc,
731 struct perf_event *event)
732{
733 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
734 struct hw_perf_event *hwc = &event->hw;
735 unsigned long evtype = hwc->config_base & ARMV8_PMU_EVTYPE_EVENT;
736
737
738 if (evtype == ARMV8_PMUV3_PERFCTR_CPU_CYCLES) {
739 if (!test_and_set_bit(ARMV8_IDX_CYCLE_COUNTER, cpuc->used_mask))
740 return ARMV8_IDX_CYCLE_COUNTER;
741 }
742
743
744
745
746 if (armv8pmu_event_is_64bit(event))
747 return armv8pmu_get_chain_idx(cpuc, cpu_pmu);
748 else
749 return armv8pmu_get_single_idx(cpuc, cpu_pmu);
750}
751
752static void armv8pmu_clear_event_idx(struct pmu_hw_events *cpuc,
753 struct perf_event *event)
754{
755 int idx = event->hw.idx;
756
757 clear_bit(idx, cpuc->used_mask);
758 if (armv8pmu_event_is_chained(event))
759 clear_bit(idx - 1, cpuc->used_mask);
760}
761
762
763
764
765static int armv8pmu_set_event_filter(struct hw_perf_event *event,
766 struct perf_event_attr *attr)
767{
768 unsigned long config_base = 0;
769
770 if (attr->exclude_idle)
771 return -EPERM;
772
773
774
775
776
777
778
779 if (is_kernel_in_hyp_mode()) {
780 if (!attr->exclude_kernel && !attr->exclude_host)
781 config_base |= ARMV8_PMU_INCLUDE_EL2;
782 if (attr->exclude_guest)
783 config_base |= ARMV8_PMU_EXCLUDE_EL1;
784 if (attr->exclude_host)
785 config_base |= ARMV8_PMU_EXCLUDE_EL0;
786 } else {
787 if (!attr->exclude_hv && !attr->exclude_host)
788 config_base |= ARMV8_PMU_INCLUDE_EL2;
789 }
790
791
792
793
794 if (attr->exclude_kernel)
795 config_base |= ARMV8_PMU_EXCLUDE_EL1;
796
797 if (attr->exclude_user)
798 config_base |= ARMV8_PMU_EXCLUDE_EL0;
799
800
801
802
803
804 event->config_base = config_base;
805
806 return 0;
807}
808
809static int armv8pmu_filter_match(struct perf_event *event)
810{
811 unsigned long evtype = event->hw.config_base & ARMV8_PMU_EVTYPE_EVENT;
812 return evtype != ARMV8_PMUV3_PERFCTR_CHAIN;
813}
814
815static void armv8pmu_reset(void *info)
816{
817 struct arm_pmu *cpu_pmu = (struct arm_pmu *)info;
818 u32 idx, nb_cnt = cpu_pmu->num_events;
819
820
821 for (idx = ARMV8_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx) {
822 armv8pmu_disable_counter(idx);
823 armv8pmu_disable_intens(idx);
824 }
825
826
827 kvm_clr_pmu_events(U32_MAX);
828
829
830
831
832
833 armv8pmu_pmcr_write(ARMV8_PMU_PMCR_P | ARMV8_PMU_PMCR_C |
834 ARMV8_PMU_PMCR_LC);
835}
836
837static int __armv8_pmuv3_map_event(struct perf_event *event,
838 const unsigned (*extra_event_map)
839 [PERF_COUNT_HW_MAX],
840 const unsigned (*extra_cache_map)
841 [PERF_COUNT_HW_CACHE_MAX]
842 [PERF_COUNT_HW_CACHE_OP_MAX]
843 [PERF_COUNT_HW_CACHE_RESULT_MAX])
844{
845 int hw_event_id;
846 struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
847
848 hw_event_id = armpmu_map_event(event, &armv8_pmuv3_perf_map,
849 &armv8_pmuv3_perf_cache_map,
850 ARMV8_PMU_EVTYPE_EVENT);
851
852 if (armv8pmu_event_is_64bit(event))
853 event->hw.flags |= ARMPMU_EVT_64BIT;
854
855
856 if ((hw_event_id > 0) && (hw_event_id < ARMV8_PMUV3_MAX_COMMON_EVENTS)
857 && test_bit(hw_event_id, armpmu->pmceid_bitmap)) {
858 return hw_event_id;
859 }
860
861 return armpmu_map_event(event, extra_event_map, extra_cache_map,
862 ARMV8_PMU_EVTYPE_EVENT);
863}
864
865static int armv8_pmuv3_map_event(struct perf_event *event)
866{
867 return __armv8_pmuv3_map_event(event, NULL, NULL);
868}
869
870static int armv8_a53_map_event(struct perf_event *event)
871{
872 return __armv8_pmuv3_map_event(event, NULL, &armv8_a53_perf_cache_map);
873}
874
875static int armv8_a57_map_event(struct perf_event *event)
876{
877 return __armv8_pmuv3_map_event(event, NULL, &armv8_a57_perf_cache_map);
878}
879
880static int armv8_a73_map_event(struct perf_event *event)
881{
882 return __armv8_pmuv3_map_event(event, NULL, &armv8_a73_perf_cache_map);
883}
884
885static int armv8_thunder_map_event(struct perf_event *event)
886{
887 return __armv8_pmuv3_map_event(event, NULL,
888 &armv8_thunder_perf_cache_map);
889}
890
891static int armv8_vulcan_map_event(struct perf_event *event)
892{
893 return __armv8_pmuv3_map_event(event, NULL,
894 &armv8_vulcan_perf_cache_map);
895}
896
897struct armv8pmu_probe_info {
898 struct arm_pmu *pmu;
899 bool present;
900};
901
902static void __armv8pmu_probe_pmu(void *info)
903{
904 struct armv8pmu_probe_info *probe = info;
905 struct arm_pmu *cpu_pmu = probe->pmu;
906 u64 dfr0;
907 u64 pmceid_raw[2];
908 u32 pmceid[2];
909 int pmuver;
910
911 dfr0 = read_sysreg(id_aa64dfr0_el1);
912 pmuver = cpuid_feature_extract_unsigned_field(dfr0,
913 ID_AA64DFR0_PMUVER_SHIFT);
914 if (pmuver == 0xf || pmuver == 0)
915 return;
916
917 probe->present = true;
918
919
920 cpu_pmu->num_events = (armv8pmu_pmcr_read() >> ARMV8_PMU_PMCR_N_SHIFT)
921 & ARMV8_PMU_PMCR_N_MASK;
922
923
924 cpu_pmu->num_events += 1;
925
926 pmceid[0] = pmceid_raw[0] = read_sysreg(pmceid0_el0);
927 pmceid[1] = pmceid_raw[1] = read_sysreg(pmceid1_el0);
928
929 bitmap_from_arr32(cpu_pmu->pmceid_bitmap,
930 pmceid, ARMV8_PMUV3_MAX_COMMON_EVENTS);
931
932 pmceid[0] = pmceid_raw[0] >> 32;
933 pmceid[1] = pmceid_raw[1] >> 32;
934
935 bitmap_from_arr32(cpu_pmu->pmceid_ext_bitmap,
936 pmceid, ARMV8_PMUV3_MAX_COMMON_EVENTS);
937}
938
939static int armv8pmu_probe_pmu(struct arm_pmu *cpu_pmu)
940{
941 struct armv8pmu_probe_info probe = {
942 .pmu = cpu_pmu,
943 .present = false,
944 };
945 int ret;
946
947 ret = smp_call_function_any(&cpu_pmu->supported_cpus,
948 __armv8pmu_probe_pmu,
949 &probe, 1);
950 if (ret)
951 return ret;
952
953 return probe.present ? 0 : -ENODEV;
954}
955
956static int armv8_pmu_init(struct arm_pmu *cpu_pmu)
957{
958 int ret = armv8pmu_probe_pmu(cpu_pmu);
959 if (ret)
960 return ret;
961
962 cpu_pmu->handle_irq = armv8pmu_handle_irq;
963 cpu_pmu->enable = armv8pmu_enable_event;
964 cpu_pmu->disable = armv8pmu_disable_event;
965 cpu_pmu->read_counter = armv8pmu_read_counter;
966 cpu_pmu->write_counter = armv8pmu_write_counter;
967 cpu_pmu->get_event_idx = armv8pmu_get_event_idx;
968 cpu_pmu->clear_event_idx = armv8pmu_clear_event_idx;
969 cpu_pmu->start = armv8pmu_start;
970 cpu_pmu->stop = armv8pmu_stop;
971 cpu_pmu->reset = armv8pmu_reset;
972 cpu_pmu->set_event_filter = armv8pmu_set_event_filter;
973 cpu_pmu->filter_match = armv8pmu_filter_match;
974
975 return 0;
976}
977
978static int armv8_pmuv3_init(struct arm_pmu *cpu_pmu)
979{
980 int ret = armv8_pmu_init(cpu_pmu);
981 if (ret)
982 return ret;
983
984 cpu_pmu->name = "armv8_pmuv3";
985 cpu_pmu->map_event = armv8_pmuv3_map_event;
986 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
987 &armv8_pmuv3_events_attr_group;
988 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
989 &armv8_pmuv3_format_attr_group;
990
991 return 0;
992}
993
994static int armv8_a35_pmu_init(struct arm_pmu *cpu_pmu)
995{
996 int ret = armv8_pmu_init(cpu_pmu);
997 if (ret)
998 return ret;
999
1000 cpu_pmu->name = "armv8_cortex_a35";
1001 cpu_pmu->map_event = armv8_a53_map_event;
1002 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1003 &armv8_pmuv3_events_attr_group;
1004 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1005 &armv8_pmuv3_format_attr_group;
1006
1007 return 0;
1008}
1009
1010static int armv8_a53_pmu_init(struct arm_pmu *cpu_pmu)
1011{
1012 int ret = armv8_pmu_init(cpu_pmu);
1013 if (ret)
1014 return ret;
1015
1016 cpu_pmu->name = "armv8_cortex_a53";
1017 cpu_pmu->map_event = armv8_a53_map_event;
1018 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1019 &armv8_pmuv3_events_attr_group;
1020 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1021 &armv8_pmuv3_format_attr_group;
1022
1023 return 0;
1024}
1025
1026static int armv8_a57_pmu_init(struct arm_pmu *cpu_pmu)
1027{
1028 int ret = armv8_pmu_init(cpu_pmu);
1029 if (ret)
1030 return ret;
1031
1032 cpu_pmu->name = "armv8_cortex_a57";
1033 cpu_pmu->map_event = armv8_a57_map_event;
1034 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1035 &armv8_pmuv3_events_attr_group;
1036 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1037 &armv8_pmuv3_format_attr_group;
1038
1039 return 0;
1040}
1041
1042static int armv8_a72_pmu_init(struct arm_pmu *cpu_pmu)
1043{
1044 int ret = armv8_pmu_init(cpu_pmu);
1045 if (ret)
1046 return ret;
1047
1048 cpu_pmu->name = "armv8_cortex_a72";
1049 cpu_pmu->map_event = armv8_a57_map_event;
1050 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1051 &armv8_pmuv3_events_attr_group;
1052 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1053 &armv8_pmuv3_format_attr_group;
1054
1055 return 0;
1056}
1057
1058static int armv8_a73_pmu_init(struct arm_pmu *cpu_pmu)
1059{
1060 int ret = armv8_pmu_init(cpu_pmu);
1061 if (ret)
1062 return ret;
1063
1064 cpu_pmu->name = "armv8_cortex_a73";
1065 cpu_pmu->map_event = armv8_a73_map_event;
1066 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1067 &armv8_pmuv3_events_attr_group;
1068 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1069 &armv8_pmuv3_format_attr_group;
1070
1071 return 0;
1072}
1073
1074static int armv8_thunder_pmu_init(struct arm_pmu *cpu_pmu)
1075{
1076 int ret = armv8_pmu_init(cpu_pmu);
1077 if (ret)
1078 return ret;
1079
1080 cpu_pmu->name = "armv8_cavium_thunder";
1081 cpu_pmu->map_event = armv8_thunder_map_event;
1082 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1083 &armv8_pmuv3_events_attr_group;
1084 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1085 &armv8_pmuv3_format_attr_group;
1086
1087 return 0;
1088}
1089
1090static int armv8_vulcan_pmu_init(struct arm_pmu *cpu_pmu)
1091{
1092 int ret = armv8_pmu_init(cpu_pmu);
1093 if (ret)
1094 return ret;
1095
1096 cpu_pmu->name = "armv8_brcm_vulcan";
1097 cpu_pmu->map_event = armv8_vulcan_map_event;
1098 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1099 &armv8_pmuv3_events_attr_group;
1100 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1101 &armv8_pmuv3_format_attr_group;
1102
1103 return 0;
1104}
1105
1106static const struct of_device_id armv8_pmu_of_device_ids[] = {
1107 {.compatible = "arm,armv8-pmuv3", .data = armv8_pmuv3_init},
1108 {.compatible = "arm,cortex-a35-pmu", .data = armv8_a35_pmu_init},
1109 {.compatible = "arm,cortex-a53-pmu", .data = armv8_a53_pmu_init},
1110 {.compatible = "arm,cortex-a57-pmu", .data = armv8_a57_pmu_init},
1111 {.compatible = "arm,cortex-a72-pmu", .data = armv8_a72_pmu_init},
1112 {.compatible = "arm,cortex-a73-pmu", .data = armv8_a73_pmu_init},
1113 {.compatible = "cavium,thunder-pmu", .data = armv8_thunder_pmu_init},
1114 {.compatible = "brcm,vulcan-pmu", .data = armv8_vulcan_pmu_init},
1115 {},
1116};
1117
1118static int armv8_pmu_device_probe(struct platform_device *pdev)
1119{
1120 return arm_pmu_device_probe(pdev, armv8_pmu_of_device_ids, NULL);
1121}
1122
1123static struct platform_driver armv8_pmu_driver = {
1124 .driver = {
1125 .name = ARMV8_PMU_PDEV_NAME,
1126 .of_match_table = armv8_pmu_of_device_ids,
1127 .suppress_bind_attrs = true,
1128 },
1129 .probe = armv8_pmu_device_probe,
1130};
1131
1132static int __init armv8_pmu_driver_init(void)
1133{
1134 if (acpi_disabled)
1135 return platform_driver_register(&armv8_pmu_driver);
1136 else
1137 return arm_pmu_acpi_probe(armv8_pmuv3_init);
1138}
1139device_initcall(armv8_pmu_driver_init)
1140
1141void arch_perf_update_userpage(struct perf_event *event,
1142 struct perf_event_mmap_page *userpg, u64 now)
1143{
1144 u32 freq;
1145 u32 shift;
1146
1147
1148
1149
1150
1151 freq = arch_timer_get_rate();
1152 userpg->cap_user_time = 1;
1153
1154 clocks_calc_mult_shift(&userpg->time_mult, &shift, freq,
1155 NSEC_PER_SEC, 0);
1156
1157
1158
1159
1160
1161
1162 if (shift == 32) {
1163 shift = 31;
1164 userpg->time_mult >>= 1;
1165 }
1166 userpg->time_shift = (u16)shift;
1167 userpg->time_offset = -now;
1168}
1169