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1/*
2 * ARMv7 Cortex-A8 and Cortex-A9 Performance Events handling code.
3 *
4 * ARMv7 support: Jean Pihet <jpihet@mvista.com>
5 * 2010 (c) MontaVista Software, LLC.
6 *
7 * Copied from ARMv6 code, with the low level code inspired
8 * by the ARMv7 Oprofile code.
9 *
10 * Cortex-A8 has up to 4 configurable performance counters and
11 * a single cycle counter.
12 * Cortex-A9 has up to 31 configurable performance counters and
13 * a single cycle counter.
14 *
15 * All counters can be enabled/disabled and IRQ masked separately. The cycle
16 * counter and all 4 performance counters together can be reset separately.
17 */
18
19#ifdef CONFIG_CPU_V7
20
21static struct arm_pmu armv7pmu;
22
23/*
24 * Common ARMv7 event types
25 *
26 * Note: An implementation may not be able to count all of these events
27 * but the encodings are considered to be `reserved' in the case that
28 * they are not available.
29 */
30enum armv7_perf_types {
31 ARMV7_PERFCTR_PMNC_SW_INCR = 0x00,
32 ARMV7_PERFCTR_L1_ICACHE_REFILL = 0x01,
33 ARMV7_PERFCTR_ITLB_REFILL = 0x02,
34 ARMV7_PERFCTR_L1_DCACHE_REFILL = 0x03,
35 ARMV7_PERFCTR_L1_DCACHE_ACCESS = 0x04,
36 ARMV7_PERFCTR_DTLB_REFILL = 0x05,
37 ARMV7_PERFCTR_MEM_READ = 0x06,
38 ARMV7_PERFCTR_MEM_WRITE = 0x07,
39 ARMV7_PERFCTR_INSTR_EXECUTED = 0x08,
40 ARMV7_PERFCTR_EXC_TAKEN = 0x09,
41 ARMV7_PERFCTR_EXC_EXECUTED = 0x0A,
42 ARMV7_PERFCTR_CID_WRITE = 0x0B,
43
44 /*
45 * ARMV7_PERFCTR_PC_WRITE is equivalent to HW_BRANCH_INSTRUCTIONS.
46 * It counts:
47 * - all (taken) branch instructions,
48 * - instructions that explicitly write the PC,
49 * - exception generating instructions.
50 */
51 ARMV7_PERFCTR_PC_WRITE = 0x0C,
52 ARMV7_PERFCTR_PC_IMM_BRANCH = 0x0D,
53 ARMV7_PERFCTR_PC_PROC_RETURN = 0x0E,
54 ARMV7_PERFCTR_MEM_UNALIGNED_ACCESS = 0x0F,
55 ARMV7_PERFCTR_PC_BRANCH_MIS_PRED = 0x10,
56 ARMV7_PERFCTR_CLOCK_CYCLES = 0x11,
57 ARMV7_PERFCTR_PC_BRANCH_PRED = 0x12,
58
59 /* These events are defined by the PMUv2 supplement (ARM DDI 0457A). */
60 ARMV7_PERFCTR_MEM_ACCESS = 0x13,
61 ARMV7_PERFCTR_L1_ICACHE_ACCESS = 0x14,
62 ARMV7_PERFCTR_L1_DCACHE_WB = 0x15,
63 ARMV7_PERFCTR_L2_CACHE_ACCESS = 0x16,
64 ARMV7_PERFCTR_L2_CACHE_REFILL = 0x17,
65 ARMV7_PERFCTR_L2_CACHE_WB = 0x18,
66 ARMV7_PERFCTR_BUS_ACCESS = 0x19,
67 ARMV7_PERFCTR_MEM_ERROR = 0x1A,
68 ARMV7_PERFCTR_INSTR_SPEC = 0x1B,
69 ARMV7_PERFCTR_TTBR_WRITE = 0x1C,
70 ARMV7_PERFCTR_BUS_CYCLES = 0x1D,
71
72 ARMV7_PERFCTR_CPU_CYCLES = 0xFF
73};
74
75/* ARMv7 Cortex-A8 specific event types */
76enum armv7_a8_perf_types {
77 ARMV7_A8_PERFCTR_L2_CACHE_ACCESS = 0x43,
78 ARMV7_A8_PERFCTR_L2_CACHE_REFILL = 0x44,
79 ARMV7_A8_PERFCTR_L1_ICACHE_ACCESS = 0x50,
80 ARMV7_A8_PERFCTR_STALL_ISIDE = 0x56,
81};
82
83/* ARMv7 Cortex-A9 specific event types */
84enum armv7_a9_perf_types {
85 ARMV7_A9_PERFCTR_INSTR_CORE_RENAME = 0x68,
86 ARMV7_A9_PERFCTR_STALL_ICACHE = 0x60,
87 ARMV7_A9_PERFCTR_STALL_DISPATCH = 0x66,
88};
89
90/* ARMv7 Cortex-A5 specific event types */
91enum armv7_a5_perf_types {
92 ARMV7_A5_PERFCTR_PREFETCH_LINEFILL = 0xc2,
93 ARMV7_A5_PERFCTR_PREFETCH_LINEFILL_DROP = 0xc3,
94};
95
96/* ARMv7 Cortex-A15 specific event types */
97enum armv7_a15_perf_types {
98 ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_READ = 0x40,
99 ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_WRITE = 0x41,
100 ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_READ = 0x42,
101 ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_WRITE = 0x43,
102
103 ARMV7_A15_PERFCTR_DTLB_REFILL_L1_READ = 0x4C,
104 ARMV7_A15_PERFCTR_DTLB_REFILL_L1_WRITE = 0x4D,
105
106 ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_READ = 0x50,
107 ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_WRITE = 0x51,
108 ARMV7_A15_PERFCTR_L2_CACHE_REFILL_READ = 0x52,
109 ARMV7_A15_PERFCTR_L2_CACHE_REFILL_WRITE = 0x53,
110
111 ARMV7_A15_PERFCTR_PC_WRITE_SPEC = 0x76,
112};
113
114/*
115 * Cortex-A8 HW events mapping
116 *
117 * The hardware events that we support. We do support cache operations but
118 * we have harvard caches and no way to combine instruction and data
119 * accesses/misses in hardware.
120 */
121static const unsigned armv7_a8_perf_map[PERF_COUNT_HW_MAX] = {
122 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
123 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
124 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
125 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
126 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
127 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
128 [PERF_COUNT_HW_BUS_CYCLES] = HW_OP_UNSUPPORTED,
129 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = ARMV7_A8_PERFCTR_STALL_ISIDE,
130 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = HW_OP_UNSUPPORTED,
131};
132
133static const unsigned armv7_a8_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
134 [PERF_COUNT_HW_CACHE_OP_MAX]
135 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
136 [C(L1D)] = {
137 /*
138 * The performance counters don't differentiate between read
139 * and write accesses/misses so this isn't strictly correct,
140 * but it's the best we can do. Writes and reads get
141 * combined.
142 */
143 [C(OP_READ)] = {
144 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
145 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
146 },
147 [C(OP_WRITE)] = {
148 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
149 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
150 },
151 [C(OP_PREFETCH)] = {
152 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
153 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
154 },
155 },
156 [C(L1I)] = {
157 [C(OP_READ)] = {
158 [C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L1_ICACHE_ACCESS,
159 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
160 },
161 [C(OP_WRITE)] = {
162 [C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L1_ICACHE_ACCESS,
163 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
164 },
165 [C(OP_PREFETCH)] = {
166 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
167 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
168 },
169 },
170 [C(LL)] = {
171 [C(OP_READ)] = {
172 [C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L2_CACHE_ACCESS,
173 [C(RESULT_MISS)] = ARMV7_A8_PERFCTR_L2_CACHE_REFILL,
174 },
175 [C(OP_WRITE)] = {
176 [C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L2_CACHE_ACCESS,
177 [C(RESULT_MISS)] = ARMV7_A8_PERFCTR_L2_CACHE_REFILL,
178 },
179 [C(OP_PREFETCH)] = {
180 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
181 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
182 },
183 },
184 [C(DTLB)] = {
185 [C(OP_READ)] = {
186 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
187 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
188 },
189 [C(OP_WRITE)] = {
190 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
191 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
192 },
193 [C(OP_PREFETCH)] = {
194 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
195 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
196 },
197 },
198 [C(ITLB)] = {
199 [C(OP_READ)] = {
200 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
201 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
202 },
203 [C(OP_WRITE)] = {
204 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
205 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
206 },
207 [C(OP_PREFETCH)] = {
208 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
209 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
210 },
211 },
212 [C(BPU)] = {
213 [C(OP_READ)] = {
214 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
215 [C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
216 },
217 [C(OP_WRITE)] = {
218 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
219 [C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
220 },
221 [C(OP_PREFETCH)] = {
222 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
223 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
224 },
225 },
226 [C(NODE)] = {
227 [C(OP_READ)] = {
228 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
229 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
230 },
231 [C(OP_WRITE)] = {
232 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
233 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
234 },
235 [C(OP_PREFETCH)] = {
236 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
237 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
238 },
239 },
240};
241
242/*
243 * Cortex-A9 HW events mapping
244 */
245static const unsigned armv7_a9_perf_map[PERF_COUNT_HW_MAX] = {
246 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
247 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_A9_PERFCTR_INSTR_CORE_RENAME,
248 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
249 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
250 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
251 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
252 [PERF_COUNT_HW_BUS_CYCLES] = HW_OP_UNSUPPORTED,
253 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = ARMV7_A9_PERFCTR_STALL_ICACHE,
254 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = ARMV7_A9_PERFCTR_STALL_DISPATCH,
255};
256
257static const unsigned armv7_a9_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
258 [PERF_COUNT_HW_CACHE_OP_MAX]
259 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
260 [C(L1D)] = {
261 /*
262 * The performance counters don't differentiate between read
263 * and write accesses/misses so this isn't strictly correct,
264 * but it's the best we can do. Writes and reads get
265 * combined.
266 */
267 [C(OP_READ)] = {
268 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
269 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
270 },
271 [C(OP_WRITE)] = {
272 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
273 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
274 },
275 [C(OP_PREFETCH)] = {
276 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
277 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
278 },
279 },
280 [C(L1I)] = {
281 [C(OP_READ)] = {
282 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
283 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
284 },
285 [C(OP_WRITE)] = {
286 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
287 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
288 },
289 [C(OP_PREFETCH)] = {
290 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
291 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
292 },
293 },
294 [C(LL)] = {
295 [C(OP_READ)] = {
296 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
297 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
298 },
299 [C(OP_WRITE)] = {
300 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
301 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
302 },
303 [C(OP_PREFETCH)] = {
304 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
305 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
306 },
307 },
308 [C(DTLB)] = {
309 [C(OP_READ)] = {
310 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
311 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
312 },
313 [C(OP_WRITE)] = {
314 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
315 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
316 },
317 [C(OP_PREFETCH)] = {
318 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
319 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
320 },
321 },
322 [C(ITLB)] = {
323 [C(OP_READ)] = {
324 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
325 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
326 },
327 [C(OP_WRITE)] = {
328 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
329 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
330 },
331 [C(OP_PREFETCH)] = {
332 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
333 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
334 },
335 },
336 [C(BPU)] = {
337 [C(OP_READ)] = {
338 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
339 [C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
340 },
341 [C(OP_WRITE)] = {
342 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
343 [C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
344 },
345 [C(OP_PREFETCH)] = {
346 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
347 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
348 },
349 },
350 [C(NODE)] = {
351 [C(OP_READ)] = {
352 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
353 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
354 },
355 [C(OP_WRITE)] = {
356 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
357 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
358 },
359 [C(OP_PREFETCH)] = {
360 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
361 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
362 },
363 },
364};
365
366/*
367 * Cortex-A5 HW events mapping
368 */
369static const unsigned armv7_a5_perf_map[PERF_COUNT_HW_MAX] = {
370 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
371 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
372 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
373 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
374 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
375 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
376 [PERF_COUNT_HW_BUS_CYCLES] = HW_OP_UNSUPPORTED,
377 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = HW_OP_UNSUPPORTED,
378 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = HW_OP_UNSUPPORTED,
379};
380
381static const unsigned armv7_a5_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
382 [PERF_COUNT_HW_CACHE_OP_MAX]
383 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
384 [C(L1D)] = {
385 [C(OP_READ)] = {
386 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
387 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
388 },
389 [C(OP_WRITE)] = {
390 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
391 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
392 },
393 [C(OP_PREFETCH)] = {
394 [C(RESULT_ACCESS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL,
395 [C(RESULT_MISS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL_DROP,
396 },
397 },
398 [C(L1I)] = {
399 [C(OP_READ)] = {
400 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
401 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
402 },
403 [C(OP_WRITE)] = {
404 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
405 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
406 },
407 /*
408 * The prefetch counters don't differentiate between the I
409 * side and the D side.
410 */
411 [C(OP_PREFETCH)] = {
412 [C(RESULT_ACCESS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL,
413 [C(RESULT_MISS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL_DROP,
414 },
415 },
416 [C(LL)] = {
417 [C(OP_READ)] = {
418 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
419 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
420 },
421 [C(OP_WRITE)] = {
422 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
423 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
424 },
425 [C(OP_PREFETCH)] = {
426 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
427 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
428 },
429 },
430 [C(DTLB)] = {
431 [C(OP_READ)] = {
432 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
433 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
434 },
435 [C(OP_WRITE)] = {
436 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
437 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
438 },
439 [C(OP_PREFETCH)] = {
440 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
441 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
442 },
443 },
444 [C(ITLB)] = {
445 [C(OP_READ)] = {
446 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
447 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
448 },
449 [C(OP_WRITE)] = {
450 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
451 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
452 },
453 [C(OP_PREFETCH)] = {
454 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
455 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
456 },
457 },
458 [C(BPU)] = {
459 [C(OP_READ)] = {
460 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
461 [C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
462 },
463 [C(OP_WRITE)] = {
464 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
465 [C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
466 },
467 [C(OP_PREFETCH)] = {
468 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
469 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
470 },
471 },
472 [C(NODE)] = {
473 [C(OP_READ)] = {
474 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
475 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
476 },
477 [C(OP_WRITE)] = {
478 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
479 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
480 },
481 [C(OP_PREFETCH)] = {
482 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
483 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
484 },
485 },
486};
487
488/*
489 * Cortex-A15 HW events mapping
490 */
491static const unsigned armv7_a15_perf_map[PERF_COUNT_HW_MAX] = {
492 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
493 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
494 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
495 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
496 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_A15_PERFCTR_PC_WRITE_SPEC,
497 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
498 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES,
499 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = HW_OP_UNSUPPORTED,
500 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = HW_OP_UNSUPPORTED,
501};
502
503static const unsigned armv7_a15_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
504 [PERF_COUNT_HW_CACHE_OP_MAX]
505 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
506 [C(L1D)] = {
507 [C(OP_READ)] = {
508 [C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_READ,
509 [C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_READ,
510 },
511 [C(OP_WRITE)] = {
512 [C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_WRITE,
513 [C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_WRITE,
514 },
515 [C(OP_PREFETCH)] = {
516 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
517 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
518 },
519 },
520 [C(L1I)] = {
521 /*
522 * Not all performance counters differentiate between read
523 * and write accesses/misses so we're not always strictly
524 * correct, but it's the best we can do. Writes and reads get
525 * combined in these cases.
526 */
527 [C(OP_READ)] = {
528 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
529 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
530 },
531 [C(OP_WRITE)] = {
532 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
533 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
534 },
535 [C(OP_PREFETCH)] = {
536 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
537 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
538 },
539 },
540 [C(LL)] = {
541 [C(OP_READ)] = {
542 [C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_READ,
543 [C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L2_CACHE_REFILL_READ,
544 },
545 [C(OP_WRITE)] = {
546 [C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_WRITE,
547 [C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L2_CACHE_REFILL_WRITE,
548 },
549 [C(OP_PREFETCH)] = {
550 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
551 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
552 },
553 },
554 [C(DTLB)] = {
555 [C(OP_READ)] = {
556 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
557 [C(RESULT_MISS)] = ARMV7_A15_PERFCTR_DTLB_REFILL_L1_READ,
558 },
559 [C(OP_WRITE)] = {
560 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
561 [C(RESULT_MISS)] = ARMV7_A15_PERFCTR_DTLB_REFILL_L1_WRITE,
562 },
563 [C(OP_PREFETCH)] = {
564 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
565 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
566 },
567 },
568 [C(ITLB)] = {
569 [C(OP_READ)] = {
570 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
571 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
572 },
573 [C(OP_WRITE)] = {
574 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
575 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
576 },
577 [C(OP_PREFETCH)] = {
578 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
579 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
580 },
581 },
582 [C(BPU)] = {
583 [C(OP_READ)] = {
584 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
585 [C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
586 },
587 [C(OP_WRITE)] = {
588 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
589 [C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
590 },
591 [C(OP_PREFETCH)] = {
592 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
593 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
594 },
595 },
596 [C(NODE)] = {
597 [C(OP_READ)] = {
598 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
599 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
600 },
601 [C(OP_WRITE)] = {
602 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
603 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
604 },
605 [C(OP_PREFETCH)] = {
606 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
607 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
608 },
609 },
610};
611
612/*
613 * Cortex-A7 HW events mapping
614 */
615static const unsigned armv7_a7_perf_map[PERF_COUNT_HW_MAX] = {
616 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
617 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
618 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
619 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
620 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
621 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
622 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES,
623 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = HW_OP_UNSUPPORTED,
624 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = HW_OP_UNSUPPORTED,
625};
626
627static const unsigned armv7_a7_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
628 [PERF_COUNT_HW_CACHE_OP_MAX]
629 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
630 [C(L1D)] = {
631 /*
632 * The performance counters don't differentiate between read
633 * and write accesses/misses so this isn't strictly correct,
634 * but it's the best we can do. Writes and reads get
635 * combined.
636 */
637 [C(OP_READ)] = {
638 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
639 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
640 },
641 [C(OP_WRITE)] = {
642 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
643 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
644 },
645 [C(OP_PREFETCH)] = {
646 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
647 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
648 },
649 },
650 [C(L1I)] = {
651 [C(OP_READ)] = {
652 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
653 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
654 },
655 [C(OP_WRITE)] = {
656 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
657 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
658 },
659 [C(OP_PREFETCH)] = {
660 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
661 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
662 },
663 },
664 [C(LL)] = {
665 [C(OP_READ)] = {
666 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L2_CACHE_ACCESS,
667 [C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACHE_REFILL,
668 },
669 [C(OP_WRITE)] = {
670 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L2_CACHE_ACCESS,
671 [C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACHE_REFILL,
672 },
673 [C(OP_PREFETCH)] = {
674 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
675 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
676 },
677 },
678 [C(DTLB)] = {
679 [C(OP_READ)] = {
680 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
681 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
682 },
683 [C(OP_WRITE)] = {
684 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
685 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
686 },
687 [C(OP_PREFETCH)] = {
688 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
689 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
690 },
691 },
692 [C(ITLB)] = {
693 [C(OP_READ)] = {
694 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
695 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
696 },
697 [C(OP_WRITE)] = {
698 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
699 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
700 },
701 [C(OP_PREFETCH)] = {
702 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
703 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
704 },
705 },
706 [C(BPU)] = {
707 [C(OP_READ)] = {
708 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
709 [C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
710 },
711 [C(OP_WRITE)] = {
712 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
713 [C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
714 },
715 [C(OP_PREFETCH)] = {
716 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
717 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
718 },
719 },
720 [C(NODE)] = {
721 [C(OP_READ)] = {
722 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
723 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
724 },
725 [C(OP_WRITE)] = {
726 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
727 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
728 },
729 [C(OP_PREFETCH)] = {
730 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
731 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
732 },
733 },
734};
735
736/*
737 * Perf Events' indices
738 */
739#define ARMV7_IDX_CYCLE_COUNTER 0
740#define ARMV7_IDX_COUNTER0 1
741#define ARMV7_IDX_COUNTER_LAST (ARMV7_IDX_CYCLE_COUNTER + cpu_pmu->num_events - 1)
742
743#define ARMV7_MAX_COUNTERS 32
744#define ARMV7_COUNTER_MASK (ARMV7_MAX_COUNTERS - 1)
745
746/*
747 * ARMv7 low level PMNC access
748 */
749
750/*
751 * Perf Event to low level counters mapping
752 */
753#define ARMV7_IDX_TO_COUNTER(x) \
754 (((x) - ARMV7_IDX_COUNTER0) & ARMV7_COUNTER_MASK)
755
756/*
757 * Per-CPU PMNC: config reg
758 */
759#define ARMV7_PMNC_E (1 << 0) /* Enable all counters */
760#define ARMV7_PMNC_P (1 << 1) /* Reset all counters */
761#define ARMV7_PMNC_C (1 << 2) /* Cycle counter reset */
762#define ARMV7_PMNC_D (1 << 3) /* CCNT counts every 64th cpu cycle */
763#define ARMV7_PMNC_X (1 << 4) /* Export to ETM */
764#define ARMV7_PMNC_DP (1 << 5) /* Disable CCNT if non-invasive debug*/
765#define ARMV7_PMNC_N_SHIFT 11 /* Number of counters supported */
766#define ARMV7_PMNC_N_MASK 0x1f
767#define ARMV7_PMNC_MASK 0x3f /* Mask for writable bits */
768
769/*
770 * FLAG: counters overflow flag status reg
771 */
772#define ARMV7_FLAG_MASK 0xffffffff /* Mask for writable bits */
773#define ARMV7_OVERFLOWED_MASK ARMV7_FLAG_MASK
774
775/*
776 * PMXEVTYPER: Event selection reg
777 */
778#define ARMV7_EVTYPE_MASK 0xc00000ff /* Mask for writable bits */
779#define ARMV7_EVTYPE_EVENT 0xff /* Mask for EVENT bits */
780
781/*
782 * Event filters for PMUv2
783 */
784#define ARMV7_EXCLUDE_PL1 (1 << 31)
785#define ARMV7_EXCLUDE_USER (1 << 30)
786#define ARMV7_INCLUDE_HYP (1 << 27)
787
788static inline u32 armv7_pmnc_read(void)
789{
790 u32 val;
791 asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r"(val));
792 return val;
793}
794
795static inline void armv7_pmnc_write(u32 val)
796{
797 val &= ARMV7_PMNC_MASK;
798 isb();
799 asm volatile("mcr p15, 0, %0, c9, c12, 0" : : "r"(val));
800}
801
802static inline int armv7_pmnc_has_overflowed(u32 pmnc)
803{
804 return pmnc & ARMV7_OVERFLOWED_MASK;
805}
806
807static inline int armv7_pmnc_counter_valid(int idx)
808{
809 return idx >= ARMV7_IDX_CYCLE_COUNTER && idx <= ARMV7_IDX_COUNTER_LAST;
810}
811
812static inline int armv7_pmnc_counter_has_overflowed(u32 pmnc, int idx)
813{
814 int ret = 0;
815 u32 counter;
816
817 if (!armv7_pmnc_counter_valid(idx)) {
818 pr_err("CPU%u checking wrong counter %d overflow status\n",
819 smp_processor_id(), idx);
820 } else {
821 counter = ARMV7_IDX_TO_COUNTER(idx);
822 ret = pmnc & BIT(counter);
823 }
824
825 return ret;
826}
827
828static inline int armv7_pmnc_select_counter(int idx)
829{
830 u32 counter;
831
832 if (!armv7_pmnc_counter_valid(idx)) {
833 pr_err("CPU%u selecting wrong PMNC counter %d\n",
834 smp_processor_id(), idx);
835 return -EINVAL;
836 }
837
838 counter = ARMV7_IDX_TO_COUNTER(idx);
839 asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r" (counter));
840 isb();
841
842 return idx;
843}
844
845static inline u32 armv7pmu_read_counter(int idx)
846{
847 u32 value = 0;
848
849 if (!armv7_pmnc_counter_valid(idx))
850 pr_err("CPU%u reading wrong counter %d\n",
851 smp_processor_id(), idx);
852 else if (idx == ARMV7_IDX_CYCLE_COUNTER)
853 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (value));
854 else if (armv7_pmnc_select_counter(idx) == idx)
855 asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (value));
856
857 return value;
858}
859
860static inline void armv7pmu_write_counter(int idx, u32 value)
861{
862 if (!armv7_pmnc_counter_valid(idx))
863 pr_err("CPU%u writing wrong counter %d\n",
864 smp_processor_id(), idx);
865 else if (idx == ARMV7_IDX_CYCLE_COUNTER)
866 asm volatile("mcr p15, 0, %0, c9, c13, 0" : : "r" (value));
867 else if (armv7_pmnc_select_counter(idx) == idx)
868 asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r" (value));
869}
870
871static inline void armv7_pmnc_write_evtsel(int idx, u32 val)
872{
873 if (armv7_pmnc_select_counter(idx) == idx) {
874 val &= ARMV7_EVTYPE_MASK;
875 asm volatile("mcr p15, 0, %0, c9, c13, 1" : : "r" (val));
876 }
877}
878
879static inline int armv7_pmnc_enable_counter(int idx)
880{
881 u32 counter;
882
883 if (!armv7_pmnc_counter_valid(idx)) {
884 pr_err("CPU%u enabling wrong PMNC counter %d\n",
885 smp_processor_id(), idx);
886 return -EINVAL;
887 }
888
889 counter = ARMV7_IDX_TO_COUNTER(idx);
890 asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r" (BIT(counter)));
891 return idx;
892}
893
894static inline int armv7_pmnc_disable_counter(int idx)
895{
896 u32 counter;
897
898 if (!armv7_pmnc_counter_valid(idx)) {
899 pr_err("CPU%u disabling wrong PMNC counter %d\n",
900 smp_processor_id(), idx);
901 return -EINVAL;
902 }
903
904 counter = ARMV7_IDX_TO_COUNTER(idx);
905 asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r" (BIT(counter)));
906 return idx;
907}
908
909static inline int armv7_pmnc_enable_intens(int idx)
910{
911 u32 counter;
912
913 if (!armv7_pmnc_counter_valid(idx)) {
914 pr_err("CPU%u enabling wrong PMNC counter IRQ enable %d\n",
915 smp_processor_id(), idx);
916 return -EINVAL;
917 }
918
919 counter = ARMV7_IDX_TO_COUNTER(idx);
920 asm volatile("mcr p15, 0, %0, c9, c14, 1" : : "r" (BIT(counter)));
921 return idx;
922}
923
924static inline int armv7_pmnc_disable_intens(int idx)
925{
926 u32 counter;
927
928 if (!armv7_pmnc_counter_valid(idx)) {
929 pr_err("CPU%u disabling wrong PMNC counter IRQ enable %d\n",
930 smp_processor_id(), idx);
931 return -EINVAL;
932 }
933
934 counter = ARMV7_IDX_TO_COUNTER(idx);
935 asm volatile("mcr p15, 0, %0, c9, c14, 2" : : "r" (BIT(counter)));
936 isb();
937 /* Clear the overflow flag in case an interrupt is pending. */
938 asm volatile("mcr p15, 0, %0, c9, c12, 3" : : "r" (BIT(counter)));
939 isb();
940
941 return idx;
942}
943
944static inline u32 armv7_pmnc_getreset_flags(void)
945{
946 u32 val;
947
948 /* Read */
949 asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val));
950
951 /* Write to clear flags */
952 val &= ARMV7_FLAG_MASK;
953 asm volatile("mcr p15, 0, %0, c9, c12, 3" : : "r" (val));
954
955 return val;
956}
957
958#ifdef DEBUG
959static void armv7_pmnc_dump_regs(void)
960{
961 u32 val;
962 unsigned int cnt;
963
964 printk(KERN_INFO "PMNC registers dump:\n");
965
966 asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r" (val));
967 printk(KERN_INFO "PMNC =0x%08x\n", val);
968
969 asm volatile("mrc p15, 0, %0, c9, c12, 1" : "=r" (val));
970 printk(KERN_INFO "CNTENS=0x%08x\n", val);
971
972 asm volatile("mrc p15, 0, %0, c9, c14, 1" : "=r" (val));
973 printk(KERN_INFO "INTENS=0x%08x\n", val);
974
975 asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val));
976 printk(KERN_INFO "FLAGS =0x%08x\n", val);
977
978 asm volatile("mrc p15, 0, %0, c9, c12, 5" : "=r" (val));
979 printk(KERN_INFO "SELECT=0x%08x\n", val);
980
981 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (val));
982 printk(KERN_INFO "CCNT =0x%08x\n", val);
983
984 for (cnt = ARMV7_IDX_COUNTER0; cnt <= ARMV7_IDX_COUNTER_LAST; cnt++) {
985 armv7_pmnc_select_counter(cnt);
986 asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (val));
987 printk(KERN_INFO "CNT[%d] count =0x%08x\n",
988 ARMV7_IDX_TO_COUNTER(cnt), val);
989 asm volatile("mrc p15, 0, %0, c9, c13, 1" : "=r" (val));
990 printk(KERN_INFO "CNT[%d] evtsel=0x%08x\n",
991 ARMV7_IDX_TO_COUNTER(cnt), val);
992 }
993}
994#endif
995
996static void armv7pmu_enable_event(struct hw_perf_event *hwc, int idx)
997{
998 unsigned long flags;
999 struct pmu_hw_events *events = cpu_pmu->get_hw_events();
1000
1001 /*
1002 * Enable counter and interrupt, and set the counter to count
1003 * the event that we're interested in.
1004 */
1005 raw_spin_lock_irqsave(&events->pmu_lock, flags);
1006
1007 /*
1008 * Disable counter
1009 */
1010 armv7_pmnc_disable_counter(idx);
1011
1012 /*
1013 * Set event (if destined for PMNx counters)
1014 * We only need to set the event for the cycle counter if we
1015 * have the ability to perform event filtering.
1016 */
1017 if (armv7pmu.set_event_filter || idx != ARMV7_IDX_CYCLE_COUNTER)
1018 armv7_pmnc_write_evtsel(idx, hwc->config_base);
1019
1020 /*
1021 * Enable interrupt for this counter
1022 */
1023 armv7_pmnc_enable_intens(idx);
1024
1025 /*
1026 * Enable counter
1027 */
1028 armv7_pmnc_enable_counter(idx);
1029
1030 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
1031}
1032
1033static void armv7pmu_disable_event(struct hw_perf_event *hwc, int idx)
1034{
1035 unsigned long flags;
1036 struct pmu_hw_events *events = cpu_pmu->get_hw_events();
1037
1038 /*
1039 * Disable counter and interrupt
1040 */
1041 raw_spin_lock_irqsave(&events->pmu_lock, flags);
1042
1043 /*
1044 * Disable counter
1045 */
1046 armv7_pmnc_disable_counter(idx);
1047
1048 /*
1049 * Disable interrupt for this counter
1050 */
1051 armv7_pmnc_disable_intens(idx);
1052
1053 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
1054}
1055
1056static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
1057{
1058 u32 pmnc;
1059 struct perf_sample_data data;
1060 struct pmu_hw_events *cpuc;
1061 struct pt_regs *regs;
1062 int idx;
1063
1064 /*
1065 * Get and reset the IRQ flags
1066 */
1067 pmnc = armv7_pmnc_getreset_flags();
1068
1069 /*
1070 * Did an overflow occur?
1071 */
1072 if (!armv7_pmnc_has_overflowed(pmnc))
1073 return IRQ_NONE;
1074
1075 /*
1076 * Handle the counter(s) overflow(s)
1077 */
1078 regs = get_irq_regs();
1079
1080 cpuc = &__get_cpu_var(cpu_hw_events);
1081 for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
1082 struct perf_event *event = cpuc->events[idx];
1083 struct hw_perf_event *hwc;
1084
1085 /* Ignore if we don't have an event. */
1086 if (!event)
1087 continue;
1088
1089 /*
1090 * We have a single interrupt for all counters. Check that
1091 * each counter has overflowed before we process it.
1092 */
1093 if (!armv7_pmnc_counter_has_overflowed(pmnc, idx))
1094 continue;
1095
1096 hwc = &event->hw;
1097 armpmu_event_update(event, hwc, idx);
1098 perf_sample_data_init(&data, 0, hwc->last_period);
1099 if (!armpmu_event_set_period(event, hwc, idx))
1100 continue;
1101
1102 if (perf_event_overflow(event, &data, regs))
1103 cpu_pmu->disable(hwc, idx);
1104 }
1105
1106 /*
1107 * Handle the pending perf events.
1108 *
1109 * Note: this call *must* be run with interrupts disabled. For
1110 * platforms that can have the PMU interrupts raised as an NMI, this
1111 * will not work.
1112 */
1113 irq_work_run();
1114
1115 return IRQ_HANDLED;
1116}
1117
1118static void armv7pmu_start(void)
1119{
1120 unsigned long flags;
1121 struct pmu_hw_events *events = cpu_pmu->get_hw_events();
1122
1123 raw_spin_lock_irqsave(&events->pmu_lock, flags);
1124 /* Enable all counters */
1125 armv7_pmnc_write(armv7_pmnc_read() | ARMV7_PMNC_E);
1126 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
1127}
1128
1129static void armv7pmu_stop(void)
1130{
1131 unsigned long flags;
1132 struct pmu_hw_events *events = cpu_pmu->get_hw_events();
1133
1134 raw_spin_lock_irqsave(&events->pmu_lock, flags);
1135 /* Disable all counters */
1136 armv7_pmnc_write(armv7_pmnc_read() & ~ARMV7_PMNC_E);
1137 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
1138}
1139
1140static int armv7pmu_get_event_idx(struct pmu_hw_events *cpuc,
1141 struct hw_perf_event *event)
1142{
1143 int idx;
1144 unsigned long evtype = event->config_base & ARMV7_EVTYPE_EVENT;
1145
1146 /* Always place a cycle counter into the cycle counter. */
1147 if (evtype == ARMV7_PERFCTR_CPU_CYCLES) {
1148 if (test_and_set_bit(ARMV7_IDX_CYCLE_COUNTER, cpuc->used_mask))
1149 return -EAGAIN;
1150
1151 return ARMV7_IDX_CYCLE_COUNTER;
1152 }
1153
1154 /*
1155 * For anything other than a cycle counter, try and use
1156 * the events counters
1157 */
1158 for (idx = ARMV7_IDX_COUNTER0; idx < cpu_pmu->num_events; ++idx) {
1159 if (!test_and_set_bit(idx, cpuc->used_mask))
1160 return idx;
1161 }
1162
1163 /* The counters are all in use. */
1164 return -EAGAIN;
1165}
1166
1167/*
1168 * Add an event filter to a given event. This will only work for PMUv2 PMUs.
1169 */
1170static int armv7pmu_set_event_filter(struct hw_perf_event *event,
1171 struct perf_event_attr *attr)
1172{
1173 unsigned long config_base = 0;
1174
1175 if (attr->exclude_idle)
1176 return -EPERM;
1177 if (attr->exclude_user)
1178 config_base |= ARMV7_EXCLUDE_USER;
1179 if (attr->exclude_kernel)
1180 config_base |= ARMV7_EXCLUDE_PL1;
1181 if (!attr->exclude_hv)
1182 config_base |= ARMV7_INCLUDE_HYP;
1183
1184 /*
1185 * Install the filter into config_base as this is used to
1186 * construct the event type.
1187 */
1188 event->config_base = config_base;
1189
1190 return 0;
1191}
1192
1193static void armv7pmu_reset(void *info)
1194{
1195 u32 idx, nb_cnt = cpu_pmu->num_events;
1196
1197 /* The counter and interrupt enable registers are unknown at reset. */
1198 for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx)
1199 armv7pmu_disable_event(NULL, idx);
1200
1201 /* Initialize & Reset PMNC: C and P bits */
1202 armv7_pmnc_write(ARMV7_PMNC_P | ARMV7_PMNC_C);
1203}
1204
1205static int armv7_a8_map_event(struct perf_event *event)
1206{
1207 return map_cpu_event(event, &armv7_a8_perf_map,
1208 &armv7_a8_perf_cache_map, 0xFF);
1209}
1210
1211static int armv7_a9_map_event(struct perf_event *event)
1212{
1213 return map_cpu_event(event, &armv7_a9_perf_map,
1214 &armv7_a9_perf_cache_map, 0xFF);
1215}
1216
1217static int armv7_a5_map_event(struct perf_event *event)
1218{
1219 return map_cpu_event(event, &armv7_a5_perf_map,
1220 &armv7_a5_perf_cache_map, 0xFF);
1221}
1222
1223static int armv7_a15_map_event(struct perf_event *event)
1224{
1225 return map_cpu_event(event, &armv7_a15_perf_map,
1226 &armv7_a15_perf_cache_map, 0xFF);
1227}
1228
1229static int armv7_a7_map_event(struct perf_event *event)
1230{
1231 return map_cpu_event(event, &armv7_a7_perf_map,
1232 &armv7_a7_perf_cache_map, 0xFF);
1233}
1234
1235static struct arm_pmu armv7pmu = {
1236 .handle_irq = armv7pmu_handle_irq,
1237 .enable = armv7pmu_enable_event,
1238 .disable = armv7pmu_disable_event,
1239 .read_counter = armv7pmu_read_counter,
1240 .write_counter = armv7pmu_write_counter,
1241 .get_event_idx = armv7pmu_get_event_idx,
1242 .start = armv7pmu_start,
1243 .stop = armv7pmu_stop,
1244 .reset = armv7pmu_reset,
1245 .max_period = (1LLU << 32) - 1,
1246};
1247
1248static u32 __init armv7_read_num_pmnc_events(void)
1249{
1250 u32 nb_cnt;
1251
1252 /* Read the nb of CNTx counters supported from PMNC */
1253 nb_cnt = (armv7_pmnc_read() >> ARMV7_PMNC_N_SHIFT) & ARMV7_PMNC_N_MASK;
1254
1255 /* Add the CPU cycles counter and return */
1256 return nb_cnt + 1;
1257}
1258
1259static struct arm_pmu *__init armv7_a8_pmu_init(void)
1260{
1261 armv7pmu.id = ARM_PERF_PMU_ID_CA8;
1262 armv7pmu.name = "ARMv7 Cortex-A8";
1263 armv7pmu.map_event = armv7_a8_map_event;
1264 armv7pmu.num_events = armv7_read_num_pmnc_events();
1265 return &armv7pmu;
1266}
1267
1268static struct arm_pmu *__init armv7_a9_pmu_init(void)
1269{
1270 armv7pmu.id = ARM_PERF_PMU_ID_CA9;
1271 armv7pmu.name = "ARMv7 Cortex-A9";
1272 armv7pmu.map_event = armv7_a9_map_event;
1273 armv7pmu.num_events = armv7_read_num_pmnc_events();
1274 return &armv7pmu;
1275}
1276
1277static struct arm_pmu *__init armv7_a5_pmu_init(void)
1278{
1279 armv7pmu.id = ARM_PERF_PMU_ID_CA5;
1280 armv7pmu.name = "ARMv7 Cortex-A5";
1281 armv7pmu.map_event = armv7_a5_map_event;
1282 armv7pmu.num_events = armv7_read_num_pmnc_events();
1283 return &armv7pmu;
1284}
1285
1286static struct arm_pmu *__init armv7_a15_pmu_init(void)
1287{
1288 armv7pmu.id = ARM_PERF_PMU_ID_CA15;
1289 armv7pmu.name = "ARMv7 Cortex-A15";
1290 armv7pmu.map_event = armv7_a15_map_event;
1291 armv7pmu.num_events = armv7_read_num_pmnc_events();
1292 armv7pmu.set_event_filter = armv7pmu_set_event_filter;
1293 return &armv7pmu;
1294}
1295
1296static struct arm_pmu *__init armv7_a7_pmu_init(void)
1297{
1298 armv7pmu.id = ARM_PERF_PMU_ID_CA7;
1299 armv7pmu.name = "ARMv7 Cortex-A7";
1300 armv7pmu.map_event = armv7_a7_map_event;
1301 armv7pmu.num_events = armv7_read_num_pmnc_events();
1302 armv7pmu.set_event_filter = armv7pmu_set_event_filter;
1303 return &armv7pmu;
1304}
1305#else
1306static struct arm_pmu *__init armv7_a8_pmu_init(void)
1307{
1308 return NULL;
1309}
1310
1311static struct arm_pmu *__init armv7_a9_pmu_init(void)
1312{
1313 return NULL;
1314}
1315
1316static struct arm_pmu *__init armv7_a5_pmu_init(void)
1317{
1318 return NULL;
1319}
1320
1321static struct arm_pmu *__init armv7_a15_pmu_init(void)
1322{
1323 return NULL;
1324}
1325
1326static struct arm_pmu *__init armv7_a7_pmu_init(void)
1327{
1328 return NULL;
1329}
1330#endif /* CONFIG_CPU_V7 */
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * ARMv7 Cortex-A8 and Cortex-A9 Performance Events handling code.
4 *
5 * ARMv7 support: Jean Pihet <jpihet@mvista.com>
6 * 2010 (c) MontaVista Software, LLC.
7 *
8 * Copied from ARMv6 code, with the low level code inspired
9 * by the ARMv7 Oprofile code.
10 *
11 * Cortex-A8 has up to 4 configurable performance counters and
12 * a single cycle counter.
13 * Cortex-A9 has up to 31 configurable performance counters and
14 * a single cycle counter.
15 *
16 * All counters can be enabled/disabled and IRQ masked separately. The cycle
17 * counter and all 4 performance counters together can be reset separately.
18 */
19
20#ifdef CONFIG_CPU_V7
21
22#include <asm/cp15.h>
23#include <asm/cputype.h>
24#include <asm/irq_regs.h>
25#include <asm/vfp.h>
26#include "../vfp/vfpinstr.h"
27
28#include <linux/of.h>
29#include <linux/perf/arm_pmu.h>
30#include <linux/platform_device.h>
31
32/*
33 * Common ARMv7 event types
34 *
35 * Note: An implementation may not be able to count all of these events
36 * but the encodings are considered to be `reserved' in the case that
37 * they are not available.
38 */
39#define ARMV7_PERFCTR_PMNC_SW_INCR 0x00
40#define ARMV7_PERFCTR_L1_ICACHE_REFILL 0x01
41#define ARMV7_PERFCTR_ITLB_REFILL 0x02
42#define ARMV7_PERFCTR_L1_DCACHE_REFILL 0x03
43#define ARMV7_PERFCTR_L1_DCACHE_ACCESS 0x04
44#define ARMV7_PERFCTR_DTLB_REFILL 0x05
45#define ARMV7_PERFCTR_MEM_READ 0x06
46#define ARMV7_PERFCTR_MEM_WRITE 0x07
47#define ARMV7_PERFCTR_INSTR_EXECUTED 0x08
48#define ARMV7_PERFCTR_EXC_TAKEN 0x09
49#define ARMV7_PERFCTR_EXC_EXECUTED 0x0A
50#define ARMV7_PERFCTR_CID_WRITE 0x0B
51
52/*
53 * ARMV7_PERFCTR_PC_WRITE is equivalent to HW_BRANCH_INSTRUCTIONS.
54 * It counts:
55 * - all (taken) branch instructions,
56 * - instructions that explicitly write the PC,
57 * - exception generating instructions.
58 */
59#define ARMV7_PERFCTR_PC_WRITE 0x0C
60#define ARMV7_PERFCTR_PC_IMM_BRANCH 0x0D
61#define ARMV7_PERFCTR_PC_PROC_RETURN 0x0E
62#define ARMV7_PERFCTR_MEM_UNALIGNED_ACCESS 0x0F
63#define ARMV7_PERFCTR_PC_BRANCH_MIS_PRED 0x10
64#define ARMV7_PERFCTR_CLOCK_CYCLES 0x11
65#define ARMV7_PERFCTR_PC_BRANCH_PRED 0x12
66
67/* These events are defined by the PMUv2 supplement (ARM DDI 0457A). */
68#define ARMV7_PERFCTR_MEM_ACCESS 0x13
69#define ARMV7_PERFCTR_L1_ICACHE_ACCESS 0x14
70#define ARMV7_PERFCTR_L1_DCACHE_WB 0x15
71#define ARMV7_PERFCTR_L2_CACHE_ACCESS 0x16
72#define ARMV7_PERFCTR_L2_CACHE_REFILL 0x17
73#define ARMV7_PERFCTR_L2_CACHE_WB 0x18
74#define ARMV7_PERFCTR_BUS_ACCESS 0x19
75#define ARMV7_PERFCTR_MEM_ERROR 0x1A
76#define ARMV7_PERFCTR_INSTR_SPEC 0x1B
77#define ARMV7_PERFCTR_TTBR_WRITE 0x1C
78#define ARMV7_PERFCTR_BUS_CYCLES 0x1D
79
80#define ARMV7_PERFCTR_CPU_CYCLES 0xFF
81
82/* ARMv7 Cortex-A8 specific event types */
83#define ARMV7_A8_PERFCTR_L2_CACHE_ACCESS 0x43
84#define ARMV7_A8_PERFCTR_L2_CACHE_REFILL 0x44
85#define ARMV7_A8_PERFCTR_L1_ICACHE_ACCESS 0x50
86#define ARMV7_A8_PERFCTR_STALL_ISIDE 0x56
87
88/* ARMv7 Cortex-A9 specific event types */
89#define ARMV7_A9_PERFCTR_INSTR_CORE_RENAME 0x68
90#define ARMV7_A9_PERFCTR_STALL_ICACHE 0x60
91#define ARMV7_A9_PERFCTR_STALL_DISPATCH 0x66
92
93/* ARMv7 Cortex-A5 specific event types */
94#define ARMV7_A5_PERFCTR_PREFETCH_LINEFILL 0xc2
95#define ARMV7_A5_PERFCTR_PREFETCH_LINEFILL_DROP 0xc3
96
97/* ARMv7 Cortex-A15 specific event types */
98#define ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_READ 0x40
99#define ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_WRITE 0x41
100#define ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_READ 0x42
101#define ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_WRITE 0x43
102
103#define ARMV7_A15_PERFCTR_DTLB_REFILL_L1_READ 0x4C
104#define ARMV7_A15_PERFCTR_DTLB_REFILL_L1_WRITE 0x4D
105
106#define ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_READ 0x50
107#define ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_WRITE 0x51
108#define ARMV7_A15_PERFCTR_L2_CACHE_REFILL_READ 0x52
109#define ARMV7_A15_PERFCTR_L2_CACHE_REFILL_WRITE 0x53
110
111#define ARMV7_A15_PERFCTR_PC_WRITE_SPEC 0x76
112
113/* ARMv7 Cortex-A12 specific event types */
114#define ARMV7_A12_PERFCTR_L1_DCACHE_ACCESS_READ 0x40
115#define ARMV7_A12_PERFCTR_L1_DCACHE_ACCESS_WRITE 0x41
116
117#define ARMV7_A12_PERFCTR_L2_CACHE_ACCESS_READ 0x50
118#define ARMV7_A12_PERFCTR_L2_CACHE_ACCESS_WRITE 0x51
119
120#define ARMV7_A12_PERFCTR_PC_WRITE_SPEC 0x76
121
122#define ARMV7_A12_PERFCTR_PF_TLB_REFILL 0xe7
123
124/* ARMv7 Krait specific event types */
125#define KRAIT_PMRESR0_GROUP0 0xcc
126#define KRAIT_PMRESR1_GROUP0 0xd0
127#define KRAIT_PMRESR2_GROUP0 0xd4
128#define KRAIT_VPMRESR0_GROUP0 0xd8
129
130#define KRAIT_PERFCTR_L1_ICACHE_ACCESS 0x10011
131#define KRAIT_PERFCTR_L1_ICACHE_MISS 0x10010
132
133#define KRAIT_PERFCTR_L1_ITLB_ACCESS 0x12222
134#define KRAIT_PERFCTR_L1_DTLB_ACCESS 0x12210
135
136/* ARMv7 Scorpion specific event types */
137#define SCORPION_LPM0_GROUP0 0x4c
138#define SCORPION_LPM1_GROUP0 0x50
139#define SCORPION_LPM2_GROUP0 0x54
140#define SCORPION_L2LPM_GROUP0 0x58
141#define SCORPION_VLPM_GROUP0 0x5c
142
143#define SCORPION_ICACHE_ACCESS 0x10053
144#define SCORPION_ICACHE_MISS 0x10052
145
146#define SCORPION_DTLB_ACCESS 0x12013
147#define SCORPION_DTLB_MISS 0x12012
148
149#define SCORPION_ITLB_MISS 0x12021
150
151/*
152 * Cortex-A8 HW events mapping
153 *
154 * The hardware events that we support. We do support cache operations but
155 * we have harvard caches and no way to combine instruction and data
156 * accesses/misses in hardware.
157 */
158static const unsigned armv7_a8_perf_map[PERF_COUNT_HW_MAX] = {
159 PERF_MAP_ALL_UNSUPPORTED,
160 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
161 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
162 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
163 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
164 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
165 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
166 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = ARMV7_A8_PERFCTR_STALL_ISIDE,
167};
168
169static const unsigned armv7_a8_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
170 [PERF_COUNT_HW_CACHE_OP_MAX]
171 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
172 PERF_CACHE_MAP_ALL_UNSUPPORTED,
173
174 /*
175 * The performance counters don't differentiate between read and write
176 * accesses/misses so this isn't strictly correct, but it's the best we
177 * can do. Writes and reads get combined.
178 */
179 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
180 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
181 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
182 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
183
184 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L1_ICACHE_ACCESS,
185 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
186
187 [C(LL)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L2_CACHE_ACCESS,
188 [C(LL)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_A8_PERFCTR_L2_CACHE_REFILL,
189 [C(LL)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_A8_PERFCTR_L2_CACHE_ACCESS,
190 [C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_A8_PERFCTR_L2_CACHE_REFILL,
191
192 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
193 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
194
195 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
196 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
197
198 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
199 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
200 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
201 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
202};
203
204/*
205 * Cortex-A9 HW events mapping
206 */
207static const unsigned armv7_a9_perf_map[PERF_COUNT_HW_MAX] = {
208 PERF_MAP_ALL_UNSUPPORTED,
209 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
210 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_A9_PERFCTR_INSTR_CORE_RENAME,
211 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
212 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
213 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
214 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
215 [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = ARMV7_A9_PERFCTR_STALL_ICACHE,
216 [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = ARMV7_A9_PERFCTR_STALL_DISPATCH,
217};
218
219static const unsigned armv7_a9_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
220 [PERF_COUNT_HW_CACHE_OP_MAX]
221 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
222 PERF_CACHE_MAP_ALL_UNSUPPORTED,
223
224 /*
225 * The performance counters don't differentiate between read and write
226 * accesses/misses so this isn't strictly correct, but it's the best we
227 * can do. Writes and reads get combined.
228 */
229 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
230 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
231 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
232 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
233
234 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
235
236 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
237 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
238
239 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
240 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
241
242 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
243 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
244 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
245 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
246};
247
248/*
249 * Cortex-A5 HW events mapping
250 */
251static const unsigned armv7_a5_perf_map[PERF_COUNT_HW_MAX] = {
252 PERF_MAP_ALL_UNSUPPORTED,
253 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
254 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
255 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
256 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
257 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
258 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
259};
260
261static const unsigned armv7_a5_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
262 [PERF_COUNT_HW_CACHE_OP_MAX]
263 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
264 PERF_CACHE_MAP_ALL_UNSUPPORTED,
265
266 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
267 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
268 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
269 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
270 [C(L1D)][C(OP_PREFETCH)][C(RESULT_ACCESS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL,
271 [C(L1D)][C(OP_PREFETCH)][C(RESULT_MISS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL_DROP,
272
273 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
274 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
275 /*
276 * The prefetch counters don't differentiate between the I side and the
277 * D side.
278 */
279 [C(L1I)][C(OP_PREFETCH)][C(RESULT_ACCESS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL,
280 [C(L1I)][C(OP_PREFETCH)][C(RESULT_MISS)] = ARMV7_A5_PERFCTR_PREFETCH_LINEFILL_DROP,
281
282 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
283 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
284
285 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
286 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
287
288 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
289 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
290 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
291 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
292};
293
294/*
295 * Cortex-A15 HW events mapping
296 */
297static const unsigned armv7_a15_perf_map[PERF_COUNT_HW_MAX] = {
298 PERF_MAP_ALL_UNSUPPORTED,
299 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
300 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
301 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
302 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
303 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_A15_PERFCTR_PC_WRITE_SPEC,
304 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
305 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES,
306};
307
308static const unsigned armv7_a15_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
309 [PERF_COUNT_HW_CACHE_OP_MAX]
310 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
311 PERF_CACHE_MAP_ALL_UNSUPPORTED,
312
313 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_READ,
314 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_READ,
315 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L1_DCACHE_ACCESS_WRITE,
316 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L1_DCACHE_REFILL_WRITE,
317
318 /*
319 * Not all performance counters differentiate between read and write
320 * accesses/misses so we're not always strictly correct, but it's the
321 * best we can do. Writes and reads get combined in these cases.
322 */
323 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
324 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
325
326 [C(LL)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_READ,
327 [C(LL)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L2_CACHE_REFILL_READ,
328 [C(LL)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_A15_PERFCTR_L2_CACHE_ACCESS_WRITE,
329 [C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_L2_CACHE_REFILL_WRITE,
330
331 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_DTLB_REFILL_L1_READ,
332 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_A15_PERFCTR_DTLB_REFILL_L1_WRITE,
333
334 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
335 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
336
337 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
338 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
339 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
340 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
341};
342
343/*
344 * Cortex-A7 HW events mapping
345 */
346static const unsigned armv7_a7_perf_map[PERF_COUNT_HW_MAX] = {
347 PERF_MAP_ALL_UNSUPPORTED,
348 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
349 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
350 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
351 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
352 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
353 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
354 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES,
355};
356
357static const unsigned armv7_a7_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
358 [PERF_COUNT_HW_CACHE_OP_MAX]
359 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
360 PERF_CACHE_MAP_ALL_UNSUPPORTED,
361
362 /*
363 * The performance counters don't differentiate between read and write
364 * accesses/misses so this isn't strictly correct, but it's the best we
365 * can do. Writes and reads get combined.
366 */
367 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
368 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
369 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
370 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
371
372 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
373 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
374
375 [C(LL)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L2_CACHE_ACCESS,
376 [C(LL)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACHE_REFILL,
377 [C(LL)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L2_CACHE_ACCESS,
378 [C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACHE_REFILL,
379
380 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
381 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
382
383 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
384 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
385
386 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
387 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
388 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
389 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
390};
391
392/*
393 * Cortex-A12 HW events mapping
394 */
395static const unsigned armv7_a12_perf_map[PERF_COUNT_HW_MAX] = {
396 PERF_MAP_ALL_UNSUPPORTED,
397 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
398 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
399 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
400 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
401 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_A12_PERFCTR_PC_WRITE_SPEC,
402 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
403 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES,
404};
405
406static const unsigned armv7_a12_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
407 [PERF_COUNT_HW_CACHE_OP_MAX]
408 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
409 PERF_CACHE_MAP_ALL_UNSUPPORTED,
410
411 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A12_PERFCTR_L1_DCACHE_ACCESS_READ,
412 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
413 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_A12_PERFCTR_L1_DCACHE_ACCESS_WRITE,
414 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
415
416 /*
417 * Not all performance counters differentiate between read and write
418 * accesses/misses so we're not always strictly correct, but it's the
419 * best we can do. Writes and reads get combined in these cases.
420 */
421 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
422 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_ICACHE_REFILL,
423
424 [C(LL)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_A12_PERFCTR_L2_CACHE_ACCESS_READ,
425 [C(LL)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACHE_REFILL,
426 [C(LL)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_A12_PERFCTR_L2_CACHE_ACCESS_WRITE,
427 [C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACHE_REFILL,
428
429 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
430 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
431 [C(DTLB)][C(OP_PREFETCH)][C(RESULT_MISS)] = ARMV7_A12_PERFCTR_PF_TLB_REFILL,
432
433 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
434 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_REFILL,
435
436 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
437 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
438 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
439 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
440};
441
442/*
443 * Krait HW events mapping
444 */
445static const unsigned krait_perf_map[PERF_COUNT_HW_MAX] = {
446 PERF_MAP_ALL_UNSUPPORTED,
447 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
448 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
449 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
450 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
451 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES,
452};
453
454static const unsigned krait_perf_map_no_branch[PERF_COUNT_HW_MAX] = {
455 PERF_MAP_ALL_UNSUPPORTED,
456 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
457 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
458 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
459 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES,
460};
461
462static const unsigned krait_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
463 [PERF_COUNT_HW_CACHE_OP_MAX]
464 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
465 PERF_CACHE_MAP_ALL_UNSUPPORTED,
466
467 /*
468 * The performance counters don't differentiate between read and write
469 * accesses/misses so this isn't strictly correct, but it's the best we
470 * can do. Writes and reads get combined.
471 */
472 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
473 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
474 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
475 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
476
477 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = KRAIT_PERFCTR_L1_ICACHE_ACCESS,
478 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = KRAIT_PERFCTR_L1_ICACHE_MISS,
479
480 [C(DTLB)][C(OP_READ)][C(RESULT_ACCESS)] = KRAIT_PERFCTR_L1_DTLB_ACCESS,
481 [C(DTLB)][C(OP_WRITE)][C(RESULT_ACCESS)] = KRAIT_PERFCTR_L1_DTLB_ACCESS,
482
483 [C(ITLB)][C(OP_READ)][C(RESULT_ACCESS)] = KRAIT_PERFCTR_L1_ITLB_ACCESS,
484 [C(ITLB)][C(OP_WRITE)][C(RESULT_ACCESS)] = KRAIT_PERFCTR_L1_ITLB_ACCESS,
485
486 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
487 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
488 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
489 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
490};
491
492/*
493 * Scorpion HW events mapping
494 */
495static const unsigned scorpion_perf_map[PERF_COUNT_HW_MAX] = {
496 PERF_MAP_ALL_UNSUPPORTED,
497 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
498 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
499 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
500 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
501 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES,
502};
503
504static const unsigned scorpion_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
505 [PERF_COUNT_HW_CACHE_OP_MAX]
506 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
507 PERF_CACHE_MAP_ALL_UNSUPPORTED,
508 /*
509 * The performance counters don't differentiate between read and write
510 * accesses/misses so this isn't strictly correct, but it's the best we
511 * can do. Writes and reads get combined.
512 */
513 [C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
514 [C(L1D)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
515 [C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_DCACHE_ACCESS,
516 [C(L1D)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_L1_DCACHE_REFILL,
517 [C(L1I)][C(OP_READ)][C(RESULT_ACCESS)] = SCORPION_ICACHE_ACCESS,
518 [C(L1I)][C(OP_READ)][C(RESULT_MISS)] = SCORPION_ICACHE_MISS,
519 /*
520 * Only ITLB misses and DTLB refills are supported. If users want the
521 * DTLB refills misses a raw counter must be used.
522 */
523 [C(DTLB)][C(OP_READ)][C(RESULT_ACCESS)] = SCORPION_DTLB_ACCESS,
524 [C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = SCORPION_DTLB_MISS,
525 [C(DTLB)][C(OP_WRITE)][C(RESULT_ACCESS)] = SCORPION_DTLB_ACCESS,
526 [C(DTLB)][C(OP_WRITE)][C(RESULT_MISS)] = SCORPION_DTLB_MISS,
527 [C(ITLB)][C(OP_READ)][C(RESULT_MISS)] = SCORPION_ITLB_MISS,
528 [C(ITLB)][C(OP_WRITE)][C(RESULT_MISS)] = SCORPION_ITLB_MISS,
529 [C(BPU)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
530 [C(BPU)][C(OP_READ)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
531 [C(BPU)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
532 [C(BPU)][C(OP_WRITE)][C(RESULT_MISS)] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
533};
534
535PMU_FORMAT_ATTR(event, "config:0-7");
536
537static struct attribute *armv7_pmu_format_attrs[] = {
538 &format_attr_event.attr,
539 NULL,
540};
541
542static struct attribute_group armv7_pmu_format_attr_group = {
543 .name = "format",
544 .attrs = armv7_pmu_format_attrs,
545};
546
547#define ARMV7_EVENT_ATTR_RESOLVE(m) #m
548#define ARMV7_EVENT_ATTR(name, config) \
549 PMU_EVENT_ATTR_STRING(name, armv7_event_attr_##name, \
550 "event=" ARMV7_EVENT_ATTR_RESOLVE(config))
551
552ARMV7_EVENT_ATTR(sw_incr, ARMV7_PERFCTR_PMNC_SW_INCR);
553ARMV7_EVENT_ATTR(l1i_cache_refill, ARMV7_PERFCTR_L1_ICACHE_REFILL);
554ARMV7_EVENT_ATTR(l1i_tlb_refill, ARMV7_PERFCTR_ITLB_REFILL);
555ARMV7_EVENT_ATTR(l1d_cache_refill, ARMV7_PERFCTR_L1_DCACHE_REFILL);
556ARMV7_EVENT_ATTR(l1d_cache, ARMV7_PERFCTR_L1_DCACHE_ACCESS);
557ARMV7_EVENT_ATTR(l1d_tlb_refill, ARMV7_PERFCTR_DTLB_REFILL);
558ARMV7_EVENT_ATTR(ld_retired, ARMV7_PERFCTR_MEM_READ);
559ARMV7_EVENT_ATTR(st_retired, ARMV7_PERFCTR_MEM_WRITE);
560ARMV7_EVENT_ATTR(inst_retired, ARMV7_PERFCTR_INSTR_EXECUTED);
561ARMV7_EVENT_ATTR(exc_taken, ARMV7_PERFCTR_EXC_TAKEN);
562ARMV7_EVENT_ATTR(exc_return, ARMV7_PERFCTR_EXC_EXECUTED);
563ARMV7_EVENT_ATTR(cid_write_retired, ARMV7_PERFCTR_CID_WRITE);
564ARMV7_EVENT_ATTR(pc_write_retired, ARMV7_PERFCTR_PC_WRITE);
565ARMV7_EVENT_ATTR(br_immed_retired, ARMV7_PERFCTR_PC_IMM_BRANCH);
566ARMV7_EVENT_ATTR(br_return_retired, ARMV7_PERFCTR_PC_PROC_RETURN);
567ARMV7_EVENT_ATTR(unaligned_ldst_retired, ARMV7_PERFCTR_MEM_UNALIGNED_ACCESS);
568ARMV7_EVENT_ATTR(br_mis_pred, ARMV7_PERFCTR_PC_BRANCH_MIS_PRED);
569ARMV7_EVENT_ATTR(cpu_cycles, ARMV7_PERFCTR_CLOCK_CYCLES);
570ARMV7_EVENT_ATTR(br_pred, ARMV7_PERFCTR_PC_BRANCH_PRED);
571
572static struct attribute *armv7_pmuv1_event_attrs[] = {
573 &armv7_event_attr_sw_incr.attr.attr,
574 &armv7_event_attr_l1i_cache_refill.attr.attr,
575 &armv7_event_attr_l1i_tlb_refill.attr.attr,
576 &armv7_event_attr_l1d_cache_refill.attr.attr,
577 &armv7_event_attr_l1d_cache.attr.attr,
578 &armv7_event_attr_l1d_tlb_refill.attr.attr,
579 &armv7_event_attr_ld_retired.attr.attr,
580 &armv7_event_attr_st_retired.attr.attr,
581 &armv7_event_attr_inst_retired.attr.attr,
582 &armv7_event_attr_exc_taken.attr.attr,
583 &armv7_event_attr_exc_return.attr.attr,
584 &armv7_event_attr_cid_write_retired.attr.attr,
585 &armv7_event_attr_pc_write_retired.attr.attr,
586 &armv7_event_attr_br_immed_retired.attr.attr,
587 &armv7_event_attr_br_return_retired.attr.attr,
588 &armv7_event_attr_unaligned_ldst_retired.attr.attr,
589 &armv7_event_attr_br_mis_pred.attr.attr,
590 &armv7_event_attr_cpu_cycles.attr.attr,
591 &armv7_event_attr_br_pred.attr.attr,
592 NULL,
593};
594
595static struct attribute_group armv7_pmuv1_events_attr_group = {
596 .name = "events",
597 .attrs = armv7_pmuv1_event_attrs,
598};
599
600ARMV7_EVENT_ATTR(mem_access, ARMV7_PERFCTR_MEM_ACCESS);
601ARMV7_EVENT_ATTR(l1i_cache, ARMV7_PERFCTR_L1_ICACHE_ACCESS);
602ARMV7_EVENT_ATTR(l1d_cache_wb, ARMV7_PERFCTR_L1_DCACHE_WB);
603ARMV7_EVENT_ATTR(l2d_cache, ARMV7_PERFCTR_L2_CACHE_ACCESS);
604ARMV7_EVENT_ATTR(l2d_cache_refill, ARMV7_PERFCTR_L2_CACHE_REFILL);
605ARMV7_EVENT_ATTR(l2d_cache_wb, ARMV7_PERFCTR_L2_CACHE_WB);
606ARMV7_EVENT_ATTR(bus_access, ARMV7_PERFCTR_BUS_ACCESS);
607ARMV7_EVENT_ATTR(memory_error, ARMV7_PERFCTR_MEM_ERROR);
608ARMV7_EVENT_ATTR(inst_spec, ARMV7_PERFCTR_INSTR_SPEC);
609ARMV7_EVENT_ATTR(ttbr_write_retired, ARMV7_PERFCTR_TTBR_WRITE);
610ARMV7_EVENT_ATTR(bus_cycles, ARMV7_PERFCTR_BUS_CYCLES);
611
612static struct attribute *armv7_pmuv2_event_attrs[] = {
613 &armv7_event_attr_sw_incr.attr.attr,
614 &armv7_event_attr_l1i_cache_refill.attr.attr,
615 &armv7_event_attr_l1i_tlb_refill.attr.attr,
616 &armv7_event_attr_l1d_cache_refill.attr.attr,
617 &armv7_event_attr_l1d_cache.attr.attr,
618 &armv7_event_attr_l1d_tlb_refill.attr.attr,
619 &armv7_event_attr_ld_retired.attr.attr,
620 &armv7_event_attr_st_retired.attr.attr,
621 &armv7_event_attr_inst_retired.attr.attr,
622 &armv7_event_attr_exc_taken.attr.attr,
623 &armv7_event_attr_exc_return.attr.attr,
624 &armv7_event_attr_cid_write_retired.attr.attr,
625 &armv7_event_attr_pc_write_retired.attr.attr,
626 &armv7_event_attr_br_immed_retired.attr.attr,
627 &armv7_event_attr_br_return_retired.attr.attr,
628 &armv7_event_attr_unaligned_ldst_retired.attr.attr,
629 &armv7_event_attr_br_mis_pred.attr.attr,
630 &armv7_event_attr_cpu_cycles.attr.attr,
631 &armv7_event_attr_br_pred.attr.attr,
632 &armv7_event_attr_mem_access.attr.attr,
633 &armv7_event_attr_l1i_cache.attr.attr,
634 &armv7_event_attr_l1d_cache_wb.attr.attr,
635 &armv7_event_attr_l2d_cache.attr.attr,
636 &armv7_event_attr_l2d_cache_refill.attr.attr,
637 &armv7_event_attr_l2d_cache_wb.attr.attr,
638 &armv7_event_attr_bus_access.attr.attr,
639 &armv7_event_attr_memory_error.attr.attr,
640 &armv7_event_attr_inst_spec.attr.attr,
641 &armv7_event_attr_ttbr_write_retired.attr.attr,
642 &armv7_event_attr_bus_cycles.attr.attr,
643 NULL,
644};
645
646static struct attribute_group armv7_pmuv2_events_attr_group = {
647 .name = "events",
648 .attrs = armv7_pmuv2_event_attrs,
649};
650
651/*
652 * Perf Events' indices
653 */
654#define ARMV7_IDX_CYCLE_COUNTER 0
655#define ARMV7_IDX_COUNTER0 1
656#define ARMV7_IDX_COUNTER_LAST(cpu_pmu) \
657 (ARMV7_IDX_CYCLE_COUNTER + cpu_pmu->num_events - 1)
658
659#define ARMV7_MAX_COUNTERS 32
660#define ARMV7_COUNTER_MASK (ARMV7_MAX_COUNTERS - 1)
661
662/*
663 * ARMv7 low level PMNC access
664 */
665
666/*
667 * Perf Event to low level counters mapping
668 */
669#define ARMV7_IDX_TO_COUNTER(x) \
670 (((x) - ARMV7_IDX_COUNTER0) & ARMV7_COUNTER_MASK)
671
672/*
673 * Per-CPU PMNC: config reg
674 */
675#define ARMV7_PMNC_E (1 << 0) /* Enable all counters */
676#define ARMV7_PMNC_P (1 << 1) /* Reset all counters */
677#define ARMV7_PMNC_C (1 << 2) /* Cycle counter reset */
678#define ARMV7_PMNC_D (1 << 3) /* CCNT counts every 64th cpu cycle */
679#define ARMV7_PMNC_X (1 << 4) /* Export to ETM */
680#define ARMV7_PMNC_DP (1 << 5) /* Disable CCNT if non-invasive debug*/
681#define ARMV7_PMNC_N_SHIFT 11 /* Number of counters supported */
682#define ARMV7_PMNC_N_MASK 0x1f
683#define ARMV7_PMNC_MASK 0x3f /* Mask for writable bits */
684
685/*
686 * FLAG: counters overflow flag status reg
687 */
688#define ARMV7_FLAG_MASK 0xffffffff /* Mask for writable bits */
689#define ARMV7_OVERFLOWED_MASK ARMV7_FLAG_MASK
690
691/*
692 * PMXEVTYPER: Event selection reg
693 */
694#define ARMV7_EVTYPE_MASK 0xc80000ff /* Mask for writable bits */
695#define ARMV7_EVTYPE_EVENT 0xff /* Mask for EVENT bits */
696
697/*
698 * Event filters for PMUv2
699 */
700#define ARMV7_EXCLUDE_PL1 BIT(31)
701#define ARMV7_EXCLUDE_USER BIT(30)
702#define ARMV7_INCLUDE_HYP BIT(27)
703
704/*
705 * Secure debug enable reg
706 */
707#define ARMV7_SDER_SUNIDEN BIT(1) /* Permit non-invasive debug */
708
709static inline u32 armv7_pmnc_read(void)
710{
711 u32 val;
712 asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r"(val));
713 return val;
714}
715
716static inline void armv7_pmnc_write(u32 val)
717{
718 val &= ARMV7_PMNC_MASK;
719 isb();
720 asm volatile("mcr p15, 0, %0, c9, c12, 0" : : "r"(val));
721}
722
723static inline int armv7_pmnc_has_overflowed(u32 pmnc)
724{
725 return pmnc & ARMV7_OVERFLOWED_MASK;
726}
727
728static inline int armv7_pmnc_counter_valid(struct arm_pmu *cpu_pmu, int idx)
729{
730 return idx >= ARMV7_IDX_CYCLE_COUNTER &&
731 idx <= ARMV7_IDX_COUNTER_LAST(cpu_pmu);
732}
733
734static inline int armv7_pmnc_counter_has_overflowed(u32 pmnc, int idx)
735{
736 return pmnc & BIT(ARMV7_IDX_TO_COUNTER(idx));
737}
738
739static inline void armv7_pmnc_select_counter(int idx)
740{
741 u32 counter = ARMV7_IDX_TO_COUNTER(idx);
742 asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r" (counter));
743 isb();
744}
745
746static inline u64 armv7pmu_read_counter(struct perf_event *event)
747{
748 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
749 struct hw_perf_event *hwc = &event->hw;
750 int idx = hwc->idx;
751 u32 value = 0;
752
753 if (!armv7_pmnc_counter_valid(cpu_pmu, idx)) {
754 pr_err("CPU%u reading wrong counter %d\n",
755 smp_processor_id(), idx);
756 } else if (idx == ARMV7_IDX_CYCLE_COUNTER) {
757 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (value));
758 } else {
759 armv7_pmnc_select_counter(idx);
760 asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (value));
761 }
762
763 return value;
764}
765
766static inline void armv7pmu_write_counter(struct perf_event *event, u64 value)
767{
768 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
769 struct hw_perf_event *hwc = &event->hw;
770 int idx = hwc->idx;
771
772 if (!armv7_pmnc_counter_valid(cpu_pmu, idx)) {
773 pr_err("CPU%u writing wrong counter %d\n",
774 smp_processor_id(), idx);
775 } else if (idx == ARMV7_IDX_CYCLE_COUNTER) {
776 asm volatile("mcr p15, 0, %0, c9, c13, 0" : : "r" ((u32)value));
777 } else {
778 armv7_pmnc_select_counter(idx);
779 asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r" ((u32)value));
780 }
781}
782
783static inline void armv7_pmnc_write_evtsel(int idx, u32 val)
784{
785 armv7_pmnc_select_counter(idx);
786 val &= ARMV7_EVTYPE_MASK;
787 asm volatile("mcr p15, 0, %0, c9, c13, 1" : : "r" (val));
788}
789
790static inline void armv7_pmnc_enable_counter(int idx)
791{
792 u32 counter = ARMV7_IDX_TO_COUNTER(idx);
793 asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r" (BIT(counter)));
794}
795
796static inline void armv7_pmnc_disable_counter(int idx)
797{
798 u32 counter = ARMV7_IDX_TO_COUNTER(idx);
799 asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r" (BIT(counter)));
800}
801
802static inline void armv7_pmnc_enable_intens(int idx)
803{
804 u32 counter = ARMV7_IDX_TO_COUNTER(idx);
805 asm volatile("mcr p15, 0, %0, c9, c14, 1" : : "r" (BIT(counter)));
806}
807
808static inline void armv7_pmnc_disable_intens(int idx)
809{
810 u32 counter = ARMV7_IDX_TO_COUNTER(idx);
811 asm volatile("mcr p15, 0, %0, c9, c14, 2" : : "r" (BIT(counter)));
812 isb();
813 /* Clear the overflow flag in case an interrupt is pending. */
814 asm volatile("mcr p15, 0, %0, c9, c12, 3" : : "r" (BIT(counter)));
815 isb();
816}
817
818static inline u32 armv7_pmnc_getreset_flags(void)
819{
820 u32 val;
821
822 /* Read */
823 asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val));
824
825 /* Write to clear flags */
826 val &= ARMV7_FLAG_MASK;
827 asm volatile("mcr p15, 0, %0, c9, c12, 3" : : "r" (val));
828
829 return val;
830}
831
832#ifdef DEBUG
833static void armv7_pmnc_dump_regs(struct arm_pmu *cpu_pmu)
834{
835 u32 val;
836 unsigned int cnt;
837
838 pr_info("PMNC registers dump:\n");
839
840 asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r" (val));
841 pr_info("PMNC =0x%08x\n", val);
842
843 asm volatile("mrc p15, 0, %0, c9, c12, 1" : "=r" (val));
844 pr_info("CNTENS=0x%08x\n", val);
845
846 asm volatile("mrc p15, 0, %0, c9, c14, 1" : "=r" (val));
847 pr_info("INTENS=0x%08x\n", val);
848
849 asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val));
850 pr_info("FLAGS =0x%08x\n", val);
851
852 asm volatile("mrc p15, 0, %0, c9, c12, 5" : "=r" (val));
853 pr_info("SELECT=0x%08x\n", val);
854
855 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (val));
856 pr_info("CCNT =0x%08x\n", val);
857
858 for (cnt = ARMV7_IDX_COUNTER0;
859 cnt <= ARMV7_IDX_COUNTER_LAST(cpu_pmu); cnt++) {
860 armv7_pmnc_select_counter(cnt);
861 asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (val));
862 pr_info("CNT[%d] count =0x%08x\n",
863 ARMV7_IDX_TO_COUNTER(cnt), val);
864 asm volatile("mrc p15, 0, %0, c9, c13, 1" : "=r" (val));
865 pr_info("CNT[%d] evtsel=0x%08x\n",
866 ARMV7_IDX_TO_COUNTER(cnt), val);
867 }
868}
869#endif
870
871static void armv7pmu_enable_event(struct perf_event *event)
872{
873 unsigned long flags;
874 struct hw_perf_event *hwc = &event->hw;
875 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
876 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
877 int idx = hwc->idx;
878
879 if (!armv7_pmnc_counter_valid(cpu_pmu, idx)) {
880 pr_err("CPU%u enabling wrong PMNC counter IRQ enable %d\n",
881 smp_processor_id(), idx);
882 return;
883 }
884
885 /*
886 * Enable counter and interrupt, and set the counter to count
887 * the event that we're interested in.
888 */
889 raw_spin_lock_irqsave(&events->pmu_lock, flags);
890
891 /*
892 * Disable counter
893 */
894 armv7_pmnc_disable_counter(idx);
895
896 /*
897 * Set event (if destined for PMNx counters)
898 * We only need to set the event for the cycle counter if we
899 * have the ability to perform event filtering.
900 */
901 if (cpu_pmu->set_event_filter || idx != ARMV7_IDX_CYCLE_COUNTER)
902 armv7_pmnc_write_evtsel(idx, hwc->config_base);
903
904 /*
905 * Enable interrupt for this counter
906 */
907 armv7_pmnc_enable_intens(idx);
908
909 /*
910 * Enable counter
911 */
912 armv7_pmnc_enable_counter(idx);
913
914 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
915}
916
917static void armv7pmu_disable_event(struct perf_event *event)
918{
919 unsigned long flags;
920 struct hw_perf_event *hwc = &event->hw;
921 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
922 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
923 int idx = hwc->idx;
924
925 if (!armv7_pmnc_counter_valid(cpu_pmu, idx)) {
926 pr_err("CPU%u disabling wrong PMNC counter IRQ enable %d\n",
927 smp_processor_id(), idx);
928 return;
929 }
930
931 /*
932 * Disable counter and interrupt
933 */
934 raw_spin_lock_irqsave(&events->pmu_lock, flags);
935
936 /*
937 * Disable counter
938 */
939 armv7_pmnc_disable_counter(idx);
940
941 /*
942 * Disable interrupt for this counter
943 */
944 armv7_pmnc_disable_intens(idx);
945
946 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
947}
948
949static irqreturn_t armv7pmu_handle_irq(struct arm_pmu *cpu_pmu)
950{
951 u32 pmnc;
952 struct perf_sample_data data;
953 struct pmu_hw_events *cpuc = this_cpu_ptr(cpu_pmu->hw_events);
954 struct pt_regs *regs;
955 int idx;
956
957 /*
958 * Get and reset the IRQ flags
959 */
960 pmnc = armv7_pmnc_getreset_flags();
961
962 /*
963 * Did an overflow occur?
964 */
965 if (!armv7_pmnc_has_overflowed(pmnc))
966 return IRQ_NONE;
967
968 /*
969 * Handle the counter(s) overflow(s)
970 */
971 regs = get_irq_regs();
972
973 for (idx = 0; idx < cpu_pmu->num_events; ++idx) {
974 struct perf_event *event = cpuc->events[idx];
975 struct hw_perf_event *hwc;
976
977 /* Ignore if we don't have an event. */
978 if (!event)
979 continue;
980
981 /*
982 * We have a single interrupt for all counters. Check that
983 * each counter has overflowed before we process it.
984 */
985 if (!armv7_pmnc_counter_has_overflowed(pmnc, idx))
986 continue;
987
988 hwc = &event->hw;
989 armpmu_event_update(event);
990 perf_sample_data_init(&data, 0, hwc->last_period);
991 if (!armpmu_event_set_period(event))
992 continue;
993
994 if (perf_event_overflow(event, &data, regs))
995 cpu_pmu->disable(event);
996 }
997
998 /*
999 * Handle the pending perf events.
1000 *
1001 * Note: this call *must* be run with interrupts disabled. For
1002 * platforms that can have the PMU interrupts raised as an NMI, this
1003 * will not work.
1004 */
1005 irq_work_run();
1006
1007 return IRQ_HANDLED;
1008}
1009
1010static void armv7pmu_start(struct arm_pmu *cpu_pmu)
1011{
1012 unsigned long flags;
1013 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
1014
1015 raw_spin_lock_irqsave(&events->pmu_lock, flags);
1016 /* Enable all counters */
1017 armv7_pmnc_write(armv7_pmnc_read() | ARMV7_PMNC_E);
1018 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
1019}
1020
1021static void armv7pmu_stop(struct arm_pmu *cpu_pmu)
1022{
1023 unsigned long flags;
1024 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
1025
1026 raw_spin_lock_irqsave(&events->pmu_lock, flags);
1027 /* Disable all counters */
1028 armv7_pmnc_write(armv7_pmnc_read() & ~ARMV7_PMNC_E);
1029 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
1030}
1031
1032static int armv7pmu_get_event_idx(struct pmu_hw_events *cpuc,
1033 struct perf_event *event)
1034{
1035 int idx;
1036 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
1037 struct hw_perf_event *hwc = &event->hw;
1038 unsigned long evtype = hwc->config_base & ARMV7_EVTYPE_EVENT;
1039
1040 /* Always place a cycle counter into the cycle counter. */
1041 if (evtype == ARMV7_PERFCTR_CPU_CYCLES) {
1042 if (test_and_set_bit(ARMV7_IDX_CYCLE_COUNTER, cpuc->used_mask))
1043 return -EAGAIN;
1044
1045 return ARMV7_IDX_CYCLE_COUNTER;
1046 }
1047
1048 /*
1049 * For anything other than a cycle counter, try and use
1050 * the events counters
1051 */
1052 for (idx = ARMV7_IDX_COUNTER0; idx < cpu_pmu->num_events; ++idx) {
1053 if (!test_and_set_bit(idx, cpuc->used_mask))
1054 return idx;
1055 }
1056
1057 /* The counters are all in use. */
1058 return -EAGAIN;
1059}
1060
1061static void armv7pmu_clear_event_idx(struct pmu_hw_events *cpuc,
1062 struct perf_event *event)
1063{
1064 clear_bit(event->hw.idx, cpuc->used_mask);
1065}
1066
1067/*
1068 * Add an event filter to a given event. This will only work for PMUv2 PMUs.
1069 */
1070static int armv7pmu_set_event_filter(struct hw_perf_event *event,
1071 struct perf_event_attr *attr)
1072{
1073 unsigned long config_base = 0;
1074
1075 if (attr->exclude_idle)
1076 return -EPERM;
1077 if (attr->exclude_user)
1078 config_base |= ARMV7_EXCLUDE_USER;
1079 if (attr->exclude_kernel)
1080 config_base |= ARMV7_EXCLUDE_PL1;
1081 if (!attr->exclude_hv)
1082 config_base |= ARMV7_INCLUDE_HYP;
1083
1084 /*
1085 * Install the filter into config_base as this is used to
1086 * construct the event type.
1087 */
1088 event->config_base = config_base;
1089
1090 return 0;
1091}
1092
1093static void armv7pmu_reset(void *info)
1094{
1095 struct arm_pmu *cpu_pmu = (struct arm_pmu *)info;
1096 u32 idx, nb_cnt = cpu_pmu->num_events, val;
1097
1098 if (cpu_pmu->secure_access) {
1099 asm volatile("mrc p15, 0, %0, c1, c1, 1" : "=r" (val));
1100 val |= ARMV7_SDER_SUNIDEN;
1101 asm volatile("mcr p15, 0, %0, c1, c1, 1" : : "r" (val));
1102 }
1103
1104 /* The counter and interrupt enable registers are unknown at reset. */
1105 for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx) {
1106 armv7_pmnc_disable_counter(idx);
1107 armv7_pmnc_disable_intens(idx);
1108 }
1109
1110 /* Initialize & Reset PMNC: C and P bits */
1111 armv7_pmnc_write(ARMV7_PMNC_P | ARMV7_PMNC_C);
1112}
1113
1114static int armv7_a8_map_event(struct perf_event *event)
1115{
1116 return armpmu_map_event(event, &armv7_a8_perf_map,
1117 &armv7_a8_perf_cache_map, 0xFF);
1118}
1119
1120static int armv7_a9_map_event(struct perf_event *event)
1121{
1122 return armpmu_map_event(event, &armv7_a9_perf_map,
1123 &armv7_a9_perf_cache_map, 0xFF);
1124}
1125
1126static int armv7_a5_map_event(struct perf_event *event)
1127{
1128 return armpmu_map_event(event, &armv7_a5_perf_map,
1129 &armv7_a5_perf_cache_map, 0xFF);
1130}
1131
1132static int armv7_a15_map_event(struct perf_event *event)
1133{
1134 return armpmu_map_event(event, &armv7_a15_perf_map,
1135 &armv7_a15_perf_cache_map, 0xFF);
1136}
1137
1138static int armv7_a7_map_event(struct perf_event *event)
1139{
1140 return armpmu_map_event(event, &armv7_a7_perf_map,
1141 &armv7_a7_perf_cache_map, 0xFF);
1142}
1143
1144static int armv7_a12_map_event(struct perf_event *event)
1145{
1146 return armpmu_map_event(event, &armv7_a12_perf_map,
1147 &armv7_a12_perf_cache_map, 0xFF);
1148}
1149
1150static int krait_map_event(struct perf_event *event)
1151{
1152 return armpmu_map_event(event, &krait_perf_map,
1153 &krait_perf_cache_map, 0xFFFFF);
1154}
1155
1156static int krait_map_event_no_branch(struct perf_event *event)
1157{
1158 return armpmu_map_event(event, &krait_perf_map_no_branch,
1159 &krait_perf_cache_map, 0xFFFFF);
1160}
1161
1162static int scorpion_map_event(struct perf_event *event)
1163{
1164 return armpmu_map_event(event, &scorpion_perf_map,
1165 &scorpion_perf_cache_map, 0xFFFFF);
1166}
1167
1168static void armv7pmu_init(struct arm_pmu *cpu_pmu)
1169{
1170 cpu_pmu->handle_irq = armv7pmu_handle_irq;
1171 cpu_pmu->enable = armv7pmu_enable_event;
1172 cpu_pmu->disable = armv7pmu_disable_event;
1173 cpu_pmu->read_counter = armv7pmu_read_counter;
1174 cpu_pmu->write_counter = armv7pmu_write_counter;
1175 cpu_pmu->get_event_idx = armv7pmu_get_event_idx;
1176 cpu_pmu->clear_event_idx = armv7pmu_clear_event_idx;
1177 cpu_pmu->start = armv7pmu_start;
1178 cpu_pmu->stop = armv7pmu_stop;
1179 cpu_pmu->reset = armv7pmu_reset;
1180};
1181
1182static void armv7_read_num_pmnc_events(void *info)
1183{
1184 int *nb_cnt = info;
1185
1186 /* Read the nb of CNTx counters supported from PMNC */
1187 *nb_cnt = (armv7_pmnc_read() >> ARMV7_PMNC_N_SHIFT) & ARMV7_PMNC_N_MASK;
1188
1189 /* Add the CPU cycles counter */
1190 *nb_cnt += 1;
1191}
1192
1193static int armv7_probe_num_events(struct arm_pmu *arm_pmu)
1194{
1195 return smp_call_function_any(&arm_pmu->supported_cpus,
1196 armv7_read_num_pmnc_events,
1197 &arm_pmu->num_events, 1);
1198}
1199
1200static int armv7_a8_pmu_init(struct arm_pmu *cpu_pmu)
1201{
1202 armv7pmu_init(cpu_pmu);
1203 cpu_pmu->name = "armv7_cortex_a8";
1204 cpu_pmu->map_event = armv7_a8_map_event;
1205 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1206 &armv7_pmuv1_events_attr_group;
1207 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1208 &armv7_pmu_format_attr_group;
1209 return armv7_probe_num_events(cpu_pmu);
1210}
1211
1212static int armv7_a9_pmu_init(struct arm_pmu *cpu_pmu)
1213{
1214 armv7pmu_init(cpu_pmu);
1215 cpu_pmu->name = "armv7_cortex_a9";
1216 cpu_pmu->map_event = armv7_a9_map_event;
1217 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1218 &armv7_pmuv1_events_attr_group;
1219 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1220 &armv7_pmu_format_attr_group;
1221 return armv7_probe_num_events(cpu_pmu);
1222}
1223
1224static int armv7_a5_pmu_init(struct arm_pmu *cpu_pmu)
1225{
1226 armv7pmu_init(cpu_pmu);
1227 cpu_pmu->name = "armv7_cortex_a5";
1228 cpu_pmu->map_event = armv7_a5_map_event;
1229 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1230 &armv7_pmuv1_events_attr_group;
1231 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1232 &armv7_pmu_format_attr_group;
1233 return armv7_probe_num_events(cpu_pmu);
1234}
1235
1236static int armv7_a15_pmu_init(struct arm_pmu *cpu_pmu)
1237{
1238 armv7pmu_init(cpu_pmu);
1239 cpu_pmu->name = "armv7_cortex_a15";
1240 cpu_pmu->map_event = armv7_a15_map_event;
1241 cpu_pmu->set_event_filter = armv7pmu_set_event_filter;
1242 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1243 &armv7_pmuv2_events_attr_group;
1244 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1245 &armv7_pmu_format_attr_group;
1246 return armv7_probe_num_events(cpu_pmu);
1247}
1248
1249static int armv7_a7_pmu_init(struct arm_pmu *cpu_pmu)
1250{
1251 armv7pmu_init(cpu_pmu);
1252 cpu_pmu->name = "armv7_cortex_a7";
1253 cpu_pmu->map_event = armv7_a7_map_event;
1254 cpu_pmu->set_event_filter = armv7pmu_set_event_filter;
1255 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1256 &armv7_pmuv2_events_attr_group;
1257 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1258 &armv7_pmu_format_attr_group;
1259 return armv7_probe_num_events(cpu_pmu);
1260}
1261
1262static int armv7_a12_pmu_init(struct arm_pmu *cpu_pmu)
1263{
1264 armv7pmu_init(cpu_pmu);
1265 cpu_pmu->name = "armv7_cortex_a12";
1266 cpu_pmu->map_event = armv7_a12_map_event;
1267 cpu_pmu->set_event_filter = armv7pmu_set_event_filter;
1268 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1269 &armv7_pmuv2_events_attr_group;
1270 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1271 &armv7_pmu_format_attr_group;
1272 return armv7_probe_num_events(cpu_pmu);
1273}
1274
1275static int armv7_a17_pmu_init(struct arm_pmu *cpu_pmu)
1276{
1277 int ret = armv7_a12_pmu_init(cpu_pmu);
1278 cpu_pmu->name = "armv7_cortex_a17";
1279 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
1280 &armv7_pmuv2_events_attr_group;
1281 cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
1282 &armv7_pmu_format_attr_group;
1283 return ret;
1284}
1285
1286/*
1287 * Krait Performance Monitor Region Event Selection Register (PMRESRn)
1288 *
1289 * 31 30 24 16 8 0
1290 * +--------------------------------+
1291 * PMRESR0 | EN | CC | CC | CC | CC | N = 1, R = 0
1292 * +--------------------------------+
1293 * PMRESR1 | EN | CC | CC | CC | CC | N = 1, R = 1
1294 * +--------------------------------+
1295 * PMRESR2 | EN | CC | CC | CC | CC | N = 1, R = 2
1296 * +--------------------------------+
1297 * VPMRESR0 | EN | CC | CC | CC | CC | N = 2, R = ?
1298 * +--------------------------------+
1299 * EN | G=3 | G=2 | G=1 | G=0
1300 *
1301 * Event Encoding:
1302 *
1303 * hwc->config_base = 0xNRCCG
1304 *
1305 * N = prefix, 1 for Krait CPU (PMRESRn), 2 for Venum VFP (VPMRESR)
1306 * R = region register
1307 * CC = class of events the group G is choosing from
1308 * G = group or particular event
1309 *
1310 * Example: 0x12021 is a Krait CPU event in PMRESR2's group 1 with code 2
1311 *
1312 * A region (R) corresponds to a piece of the CPU (execution unit, instruction
1313 * unit, etc.) while the event code (CC) corresponds to a particular class of
1314 * events (interrupts for example). An event code is broken down into
1315 * groups (G) that can be mapped into the PMU (irq, fiqs, and irq+fiqs for
1316 * example).
1317 */
1318
1319#define KRAIT_EVENT (1 << 16)
1320#define VENUM_EVENT (2 << 16)
1321#define KRAIT_EVENT_MASK (KRAIT_EVENT | VENUM_EVENT)
1322#define PMRESRn_EN BIT(31)
1323
1324#define EVENT_REGION(event) (((event) >> 12) & 0xf) /* R */
1325#define EVENT_GROUP(event) ((event) & 0xf) /* G */
1326#define EVENT_CODE(event) (((event) >> 4) & 0xff) /* CC */
1327#define EVENT_VENUM(event) (!!(event & VENUM_EVENT)) /* N=2 */
1328#define EVENT_CPU(event) (!!(event & KRAIT_EVENT)) /* N=1 */
1329
1330static u32 krait_read_pmresrn(int n)
1331{
1332 u32 val;
1333
1334 switch (n) {
1335 case 0:
1336 asm volatile("mrc p15, 1, %0, c9, c15, 0" : "=r" (val));
1337 break;
1338 case 1:
1339 asm volatile("mrc p15, 1, %0, c9, c15, 1" : "=r" (val));
1340 break;
1341 case 2:
1342 asm volatile("mrc p15, 1, %0, c9, c15, 2" : "=r" (val));
1343 break;
1344 default:
1345 BUG(); /* Should be validated in krait_pmu_get_event_idx() */
1346 }
1347
1348 return val;
1349}
1350
1351static void krait_write_pmresrn(int n, u32 val)
1352{
1353 switch (n) {
1354 case 0:
1355 asm volatile("mcr p15, 1, %0, c9, c15, 0" : : "r" (val));
1356 break;
1357 case 1:
1358 asm volatile("mcr p15, 1, %0, c9, c15, 1" : : "r" (val));
1359 break;
1360 case 2:
1361 asm volatile("mcr p15, 1, %0, c9, c15, 2" : : "r" (val));
1362 break;
1363 default:
1364 BUG(); /* Should be validated in krait_pmu_get_event_idx() */
1365 }
1366}
1367
1368static u32 venum_read_pmresr(void)
1369{
1370 u32 val;
1371 asm volatile("mrc p10, 7, %0, c11, c0, 0" : "=r" (val));
1372 return val;
1373}
1374
1375static void venum_write_pmresr(u32 val)
1376{
1377 asm volatile("mcr p10, 7, %0, c11, c0, 0" : : "r" (val));
1378}
1379
1380static void venum_pre_pmresr(u32 *venum_orig_val, u32 *fp_orig_val)
1381{
1382 u32 venum_new_val;
1383 u32 fp_new_val;
1384
1385 BUG_ON(preemptible());
1386 /* CPACR Enable CP10 and CP11 access */
1387 *venum_orig_val = get_copro_access();
1388 venum_new_val = *venum_orig_val | CPACC_SVC(10) | CPACC_SVC(11);
1389 set_copro_access(venum_new_val);
1390
1391 /* Enable FPEXC */
1392 *fp_orig_val = fmrx(FPEXC);
1393 fp_new_val = *fp_orig_val | FPEXC_EN;
1394 fmxr(FPEXC, fp_new_val);
1395}
1396
1397static void venum_post_pmresr(u32 venum_orig_val, u32 fp_orig_val)
1398{
1399 BUG_ON(preemptible());
1400 /* Restore FPEXC */
1401 fmxr(FPEXC, fp_orig_val);
1402 isb();
1403 /* Restore CPACR */
1404 set_copro_access(venum_orig_val);
1405}
1406
1407static u32 krait_get_pmresrn_event(unsigned int region)
1408{
1409 static const u32 pmresrn_table[] = { KRAIT_PMRESR0_GROUP0,
1410 KRAIT_PMRESR1_GROUP0,
1411 KRAIT_PMRESR2_GROUP0 };
1412 return pmresrn_table[region];
1413}
1414
1415static void krait_evt_setup(int idx, u32 config_base)
1416{
1417 u32 val;
1418 u32 mask;
1419 u32 vval, fval;
1420 unsigned int region = EVENT_REGION(config_base);
1421 unsigned int group = EVENT_GROUP(config_base);
1422 unsigned int code = EVENT_CODE(config_base);
1423 unsigned int group_shift;
1424 bool venum_event = EVENT_VENUM(config_base);
1425
1426 group_shift = group * 8;
1427 mask = 0xff << group_shift;
1428
1429 /* Configure evtsel for the region and group */
1430 if (venum_event)
1431 val = KRAIT_VPMRESR0_GROUP0;
1432 else
1433 val = krait_get_pmresrn_event(region);
1434 val += group;
1435 /* Mix in mode-exclusion bits */
1436 val |= config_base & (ARMV7_EXCLUDE_USER | ARMV7_EXCLUDE_PL1);
1437 armv7_pmnc_write_evtsel(idx, val);
1438
1439 if (venum_event) {
1440 venum_pre_pmresr(&vval, &fval);
1441 val = venum_read_pmresr();
1442 val &= ~mask;
1443 val |= code << group_shift;
1444 val |= PMRESRn_EN;
1445 venum_write_pmresr(val);
1446 venum_post_pmresr(vval, fval);
1447 } else {
1448 val = krait_read_pmresrn(region);
1449 val &= ~mask;
1450 val |= code << group_shift;
1451 val |= PMRESRn_EN;
1452 krait_write_pmresrn(region, val);
1453 }
1454}
1455
1456static u32 clear_pmresrn_group(u32 val, int group)
1457{
1458 u32 mask;
1459 int group_shift;
1460
1461 group_shift = group * 8;
1462 mask = 0xff << group_shift;
1463 val &= ~mask;
1464
1465 /* Don't clear enable bit if entire region isn't disabled */
1466 if (val & ~PMRESRn_EN)
1467 return val |= PMRESRn_EN;
1468
1469 return 0;
1470}
1471
1472static void krait_clearpmu(u32 config_base)
1473{
1474 u32 val;
1475 u32 vval, fval;
1476 unsigned int region = EVENT_REGION(config_base);
1477 unsigned int group = EVENT_GROUP(config_base);
1478 bool venum_event = EVENT_VENUM(config_base);
1479
1480 if (venum_event) {
1481 venum_pre_pmresr(&vval, &fval);
1482 val = venum_read_pmresr();
1483 val = clear_pmresrn_group(val, group);
1484 venum_write_pmresr(val);
1485 venum_post_pmresr(vval, fval);
1486 } else {
1487 val = krait_read_pmresrn(region);
1488 val = clear_pmresrn_group(val, group);
1489 krait_write_pmresrn(region, val);
1490 }
1491}
1492
1493static void krait_pmu_disable_event(struct perf_event *event)
1494{
1495 unsigned long flags;
1496 struct hw_perf_event *hwc = &event->hw;
1497 int idx = hwc->idx;
1498 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
1499 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
1500
1501 /* Disable counter and interrupt */
1502 raw_spin_lock_irqsave(&events->pmu_lock, flags);
1503
1504 /* Disable counter */
1505 armv7_pmnc_disable_counter(idx);
1506
1507 /*
1508 * Clear pmresr code (if destined for PMNx counters)
1509 */
1510 if (hwc->config_base & KRAIT_EVENT_MASK)
1511 krait_clearpmu(hwc->config_base);
1512
1513 /* Disable interrupt for this counter */
1514 armv7_pmnc_disable_intens(idx);
1515
1516 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
1517}
1518
1519static void krait_pmu_enable_event(struct perf_event *event)
1520{
1521 unsigned long flags;
1522 struct hw_perf_event *hwc = &event->hw;
1523 int idx = hwc->idx;
1524 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
1525 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
1526
1527 /*
1528 * Enable counter and interrupt, and set the counter to count
1529 * the event that we're interested in.
1530 */
1531 raw_spin_lock_irqsave(&events->pmu_lock, flags);
1532
1533 /* Disable counter */
1534 armv7_pmnc_disable_counter(idx);
1535
1536 /*
1537 * Set event (if destined for PMNx counters)
1538 * We set the event for the cycle counter because we
1539 * have the ability to perform event filtering.
1540 */
1541 if (hwc->config_base & KRAIT_EVENT_MASK)
1542 krait_evt_setup(idx, hwc->config_base);
1543 else
1544 armv7_pmnc_write_evtsel(idx, hwc->config_base);
1545
1546 /* Enable interrupt for this counter */
1547 armv7_pmnc_enable_intens(idx);
1548
1549 /* Enable counter */
1550 armv7_pmnc_enable_counter(idx);
1551
1552 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
1553}
1554
1555static void krait_pmu_reset(void *info)
1556{
1557 u32 vval, fval;
1558 struct arm_pmu *cpu_pmu = info;
1559 u32 idx, nb_cnt = cpu_pmu->num_events;
1560
1561 armv7pmu_reset(info);
1562
1563 /* Clear all pmresrs */
1564 krait_write_pmresrn(0, 0);
1565 krait_write_pmresrn(1, 0);
1566 krait_write_pmresrn(2, 0);
1567
1568 venum_pre_pmresr(&vval, &fval);
1569 venum_write_pmresr(0);
1570 venum_post_pmresr(vval, fval);
1571
1572 /* Reset PMxEVNCTCR to sane default */
1573 for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx) {
1574 armv7_pmnc_select_counter(idx);
1575 asm volatile("mcr p15, 0, %0, c9, c15, 0" : : "r" (0));
1576 }
1577
1578}
1579
1580static int krait_event_to_bit(struct perf_event *event, unsigned int region,
1581 unsigned int group)
1582{
1583 int bit;
1584 struct hw_perf_event *hwc = &event->hw;
1585 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
1586
1587 if (hwc->config_base & VENUM_EVENT)
1588 bit = KRAIT_VPMRESR0_GROUP0;
1589 else
1590 bit = krait_get_pmresrn_event(region);
1591 bit -= krait_get_pmresrn_event(0);
1592 bit += group;
1593 /*
1594 * Lower bits are reserved for use by the counters (see
1595 * armv7pmu_get_event_idx() for more info)
1596 */
1597 bit += ARMV7_IDX_COUNTER_LAST(cpu_pmu) + 1;
1598
1599 return bit;
1600}
1601
1602/*
1603 * We check for column exclusion constraints here.
1604 * Two events cant use the same group within a pmresr register.
1605 */
1606static int krait_pmu_get_event_idx(struct pmu_hw_events *cpuc,
1607 struct perf_event *event)
1608{
1609 int idx;
1610 int bit = -1;
1611 struct hw_perf_event *hwc = &event->hw;
1612 unsigned int region = EVENT_REGION(hwc->config_base);
1613 unsigned int code = EVENT_CODE(hwc->config_base);
1614 unsigned int group = EVENT_GROUP(hwc->config_base);
1615 bool venum_event = EVENT_VENUM(hwc->config_base);
1616 bool krait_event = EVENT_CPU(hwc->config_base);
1617
1618 if (venum_event || krait_event) {
1619 /* Ignore invalid events */
1620 if (group > 3 || region > 2)
1621 return -EINVAL;
1622 if (venum_event && (code & 0xe0))
1623 return -EINVAL;
1624
1625 bit = krait_event_to_bit(event, region, group);
1626 if (test_and_set_bit(bit, cpuc->used_mask))
1627 return -EAGAIN;
1628 }
1629
1630 idx = armv7pmu_get_event_idx(cpuc, event);
1631 if (idx < 0 && bit >= 0)
1632 clear_bit(bit, cpuc->used_mask);
1633
1634 return idx;
1635}
1636
1637static void krait_pmu_clear_event_idx(struct pmu_hw_events *cpuc,
1638 struct perf_event *event)
1639{
1640 int bit;
1641 struct hw_perf_event *hwc = &event->hw;
1642 unsigned int region = EVENT_REGION(hwc->config_base);
1643 unsigned int group = EVENT_GROUP(hwc->config_base);
1644 bool venum_event = EVENT_VENUM(hwc->config_base);
1645 bool krait_event = EVENT_CPU(hwc->config_base);
1646
1647 armv7pmu_clear_event_idx(cpuc, event);
1648 if (venum_event || krait_event) {
1649 bit = krait_event_to_bit(event, region, group);
1650 clear_bit(bit, cpuc->used_mask);
1651 }
1652}
1653
1654static int krait_pmu_init(struct arm_pmu *cpu_pmu)
1655{
1656 armv7pmu_init(cpu_pmu);
1657 cpu_pmu->name = "armv7_krait";
1658 /* Some early versions of Krait don't support PC write events */
1659 if (of_property_read_bool(cpu_pmu->plat_device->dev.of_node,
1660 "qcom,no-pc-write"))
1661 cpu_pmu->map_event = krait_map_event_no_branch;
1662 else
1663 cpu_pmu->map_event = krait_map_event;
1664 cpu_pmu->set_event_filter = armv7pmu_set_event_filter;
1665 cpu_pmu->reset = krait_pmu_reset;
1666 cpu_pmu->enable = krait_pmu_enable_event;
1667 cpu_pmu->disable = krait_pmu_disable_event;
1668 cpu_pmu->get_event_idx = krait_pmu_get_event_idx;
1669 cpu_pmu->clear_event_idx = krait_pmu_clear_event_idx;
1670 return armv7_probe_num_events(cpu_pmu);
1671}
1672
1673/*
1674 * Scorpion Local Performance Monitor Register (LPMn)
1675 *
1676 * 31 30 24 16 8 0
1677 * +--------------------------------+
1678 * LPM0 | EN | CC | CC | CC | CC | N = 1, R = 0
1679 * +--------------------------------+
1680 * LPM1 | EN | CC | CC | CC | CC | N = 1, R = 1
1681 * +--------------------------------+
1682 * LPM2 | EN | CC | CC | CC | CC | N = 1, R = 2
1683 * +--------------------------------+
1684 * L2LPM | EN | CC | CC | CC | CC | N = 1, R = 3
1685 * +--------------------------------+
1686 * VLPM | EN | CC | CC | CC | CC | N = 2, R = ?
1687 * +--------------------------------+
1688 * EN | G=3 | G=2 | G=1 | G=0
1689 *
1690 *
1691 * Event Encoding:
1692 *
1693 * hwc->config_base = 0xNRCCG
1694 *
1695 * N = prefix, 1 for Scorpion CPU (LPMn/L2LPM), 2 for Venum VFP (VLPM)
1696 * R = region register
1697 * CC = class of events the group G is choosing from
1698 * G = group or particular event
1699 *
1700 * Example: 0x12021 is a Scorpion CPU event in LPM2's group 1 with code 2
1701 *
1702 * A region (R) corresponds to a piece of the CPU (execution unit, instruction
1703 * unit, etc.) while the event code (CC) corresponds to a particular class of
1704 * events (interrupts for example). An event code is broken down into
1705 * groups (G) that can be mapped into the PMU (irq, fiqs, and irq+fiqs for
1706 * example).
1707 */
1708
1709static u32 scorpion_read_pmresrn(int n)
1710{
1711 u32 val;
1712
1713 switch (n) {
1714 case 0:
1715 asm volatile("mrc p15, 0, %0, c15, c0, 0" : "=r" (val));
1716 break;
1717 case 1:
1718 asm volatile("mrc p15, 1, %0, c15, c0, 0" : "=r" (val));
1719 break;
1720 case 2:
1721 asm volatile("mrc p15, 2, %0, c15, c0, 0" : "=r" (val));
1722 break;
1723 case 3:
1724 asm volatile("mrc p15, 3, %0, c15, c2, 0" : "=r" (val));
1725 break;
1726 default:
1727 BUG(); /* Should be validated in scorpion_pmu_get_event_idx() */
1728 }
1729
1730 return val;
1731}
1732
1733static void scorpion_write_pmresrn(int n, u32 val)
1734{
1735 switch (n) {
1736 case 0:
1737 asm volatile("mcr p15, 0, %0, c15, c0, 0" : : "r" (val));
1738 break;
1739 case 1:
1740 asm volatile("mcr p15, 1, %0, c15, c0, 0" : : "r" (val));
1741 break;
1742 case 2:
1743 asm volatile("mcr p15, 2, %0, c15, c0, 0" : : "r" (val));
1744 break;
1745 case 3:
1746 asm volatile("mcr p15, 3, %0, c15, c2, 0" : : "r" (val));
1747 break;
1748 default:
1749 BUG(); /* Should be validated in scorpion_pmu_get_event_idx() */
1750 }
1751}
1752
1753static u32 scorpion_get_pmresrn_event(unsigned int region)
1754{
1755 static const u32 pmresrn_table[] = { SCORPION_LPM0_GROUP0,
1756 SCORPION_LPM1_GROUP0,
1757 SCORPION_LPM2_GROUP0,
1758 SCORPION_L2LPM_GROUP0 };
1759 return pmresrn_table[region];
1760}
1761
1762static void scorpion_evt_setup(int idx, u32 config_base)
1763{
1764 u32 val;
1765 u32 mask;
1766 u32 vval, fval;
1767 unsigned int region = EVENT_REGION(config_base);
1768 unsigned int group = EVENT_GROUP(config_base);
1769 unsigned int code = EVENT_CODE(config_base);
1770 unsigned int group_shift;
1771 bool venum_event = EVENT_VENUM(config_base);
1772
1773 group_shift = group * 8;
1774 mask = 0xff << group_shift;
1775
1776 /* Configure evtsel for the region and group */
1777 if (venum_event)
1778 val = SCORPION_VLPM_GROUP0;
1779 else
1780 val = scorpion_get_pmresrn_event(region);
1781 val += group;
1782 /* Mix in mode-exclusion bits */
1783 val |= config_base & (ARMV7_EXCLUDE_USER | ARMV7_EXCLUDE_PL1);
1784 armv7_pmnc_write_evtsel(idx, val);
1785
1786 asm volatile("mcr p15, 0, %0, c9, c15, 0" : : "r" (0));
1787
1788 if (venum_event) {
1789 venum_pre_pmresr(&vval, &fval);
1790 val = venum_read_pmresr();
1791 val &= ~mask;
1792 val |= code << group_shift;
1793 val |= PMRESRn_EN;
1794 venum_write_pmresr(val);
1795 venum_post_pmresr(vval, fval);
1796 } else {
1797 val = scorpion_read_pmresrn(region);
1798 val &= ~mask;
1799 val |= code << group_shift;
1800 val |= PMRESRn_EN;
1801 scorpion_write_pmresrn(region, val);
1802 }
1803}
1804
1805static void scorpion_clearpmu(u32 config_base)
1806{
1807 u32 val;
1808 u32 vval, fval;
1809 unsigned int region = EVENT_REGION(config_base);
1810 unsigned int group = EVENT_GROUP(config_base);
1811 bool venum_event = EVENT_VENUM(config_base);
1812
1813 if (venum_event) {
1814 venum_pre_pmresr(&vval, &fval);
1815 val = venum_read_pmresr();
1816 val = clear_pmresrn_group(val, group);
1817 venum_write_pmresr(val);
1818 venum_post_pmresr(vval, fval);
1819 } else {
1820 val = scorpion_read_pmresrn(region);
1821 val = clear_pmresrn_group(val, group);
1822 scorpion_write_pmresrn(region, val);
1823 }
1824}
1825
1826static void scorpion_pmu_disable_event(struct perf_event *event)
1827{
1828 unsigned long flags;
1829 struct hw_perf_event *hwc = &event->hw;
1830 int idx = hwc->idx;
1831 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
1832 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
1833
1834 /* Disable counter and interrupt */
1835 raw_spin_lock_irqsave(&events->pmu_lock, flags);
1836
1837 /* Disable counter */
1838 armv7_pmnc_disable_counter(idx);
1839
1840 /*
1841 * Clear pmresr code (if destined for PMNx counters)
1842 */
1843 if (hwc->config_base & KRAIT_EVENT_MASK)
1844 scorpion_clearpmu(hwc->config_base);
1845
1846 /* Disable interrupt for this counter */
1847 armv7_pmnc_disable_intens(idx);
1848
1849 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
1850}
1851
1852static void scorpion_pmu_enable_event(struct perf_event *event)
1853{
1854 unsigned long flags;
1855 struct hw_perf_event *hwc = &event->hw;
1856 int idx = hwc->idx;
1857 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
1858 struct pmu_hw_events *events = this_cpu_ptr(cpu_pmu->hw_events);
1859
1860 /*
1861 * Enable counter and interrupt, and set the counter to count
1862 * the event that we're interested in.
1863 */
1864 raw_spin_lock_irqsave(&events->pmu_lock, flags);
1865
1866 /* Disable counter */
1867 armv7_pmnc_disable_counter(idx);
1868
1869 /*
1870 * Set event (if destined for PMNx counters)
1871 * We don't set the event for the cycle counter because we
1872 * don't have the ability to perform event filtering.
1873 */
1874 if (hwc->config_base & KRAIT_EVENT_MASK)
1875 scorpion_evt_setup(idx, hwc->config_base);
1876 else if (idx != ARMV7_IDX_CYCLE_COUNTER)
1877 armv7_pmnc_write_evtsel(idx, hwc->config_base);
1878
1879 /* Enable interrupt for this counter */
1880 armv7_pmnc_enable_intens(idx);
1881
1882 /* Enable counter */
1883 armv7_pmnc_enable_counter(idx);
1884
1885 raw_spin_unlock_irqrestore(&events->pmu_lock, flags);
1886}
1887
1888static void scorpion_pmu_reset(void *info)
1889{
1890 u32 vval, fval;
1891 struct arm_pmu *cpu_pmu = info;
1892 u32 idx, nb_cnt = cpu_pmu->num_events;
1893
1894 armv7pmu_reset(info);
1895
1896 /* Clear all pmresrs */
1897 scorpion_write_pmresrn(0, 0);
1898 scorpion_write_pmresrn(1, 0);
1899 scorpion_write_pmresrn(2, 0);
1900 scorpion_write_pmresrn(3, 0);
1901
1902 venum_pre_pmresr(&vval, &fval);
1903 venum_write_pmresr(0);
1904 venum_post_pmresr(vval, fval);
1905
1906 /* Reset PMxEVNCTCR to sane default */
1907 for (idx = ARMV7_IDX_CYCLE_COUNTER; idx < nb_cnt; ++idx) {
1908 armv7_pmnc_select_counter(idx);
1909 asm volatile("mcr p15, 0, %0, c9, c15, 0" : : "r" (0));
1910 }
1911}
1912
1913static int scorpion_event_to_bit(struct perf_event *event, unsigned int region,
1914 unsigned int group)
1915{
1916 int bit;
1917 struct hw_perf_event *hwc = &event->hw;
1918 struct arm_pmu *cpu_pmu = to_arm_pmu(event->pmu);
1919
1920 if (hwc->config_base & VENUM_EVENT)
1921 bit = SCORPION_VLPM_GROUP0;
1922 else
1923 bit = scorpion_get_pmresrn_event(region);
1924 bit -= scorpion_get_pmresrn_event(0);
1925 bit += group;
1926 /*
1927 * Lower bits are reserved for use by the counters (see
1928 * armv7pmu_get_event_idx() for more info)
1929 */
1930 bit += ARMV7_IDX_COUNTER_LAST(cpu_pmu) + 1;
1931
1932 return bit;
1933}
1934
1935/*
1936 * We check for column exclusion constraints here.
1937 * Two events cant use the same group within a pmresr register.
1938 */
1939static int scorpion_pmu_get_event_idx(struct pmu_hw_events *cpuc,
1940 struct perf_event *event)
1941{
1942 int idx;
1943 int bit = -1;
1944 struct hw_perf_event *hwc = &event->hw;
1945 unsigned int region = EVENT_REGION(hwc->config_base);
1946 unsigned int group = EVENT_GROUP(hwc->config_base);
1947 bool venum_event = EVENT_VENUM(hwc->config_base);
1948 bool scorpion_event = EVENT_CPU(hwc->config_base);
1949
1950 if (venum_event || scorpion_event) {
1951 /* Ignore invalid events */
1952 if (group > 3 || region > 3)
1953 return -EINVAL;
1954
1955 bit = scorpion_event_to_bit(event, region, group);
1956 if (test_and_set_bit(bit, cpuc->used_mask))
1957 return -EAGAIN;
1958 }
1959
1960 idx = armv7pmu_get_event_idx(cpuc, event);
1961 if (idx < 0 && bit >= 0)
1962 clear_bit(bit, cpuc->used_mask);
1963
1964 return idx;
1965}
1966
1967static void scorpion_pmu_clear_event_idx(struct pmu_hw_events *cpuc,
1968 struct perf_event *event)
1969{
1970 int bit;
1971 struct hw_perf_event *hwc = &event->hw;
1972 unsigned int region = EVENT_REGION(hwc->config_base);
1973 unsigned int group = EVENT_GROUP(hwc->config_base);
1974 bool venum_event = EVENT_VENUM(hwc->config_base);
1975 bool scorpion_event = EVENT_CPU(hwc->config_base);
1976
1977 armv7pmu_clear_event_idx(cpuc, event);
1978 if (venum_event || scorpion_event) {
1979 bit = scorpion_event_to_bit(event, region, group);
1980 clear_bit(bit, cpuc->used_mask);
1981 }
1982}
1983
1984static int scorpion_pmu_init(struct arm_pmu *cpu_pmu)
1985{
1986 armv7pmu_init(cpu_pmu);
1987 cpu_pmu->name = "armv7_scorpion";
1988 cpu_pmu->map_event = scorpion_map_event;
1989 cpu_pmu->reset = scorpion_pmu_reset;
1990 cpu_pmu->enable = scorpion_pmu_enable_event;
1991 cpu_pmu->disable = scorpion_pmu_disable_event;
1992 cpu_pmu->get_event_idx = scorpion_pmu_get_event_idx;
1993 cpu_pmu->clear_event_idx = scorpion_pmu_clear_event_idx;
1994 return armv7_probe_num_events(cpu_pmu);
1995}
1996
1997static int scorpion_mp_pmu_init(struct arm_pmu *cpu_pmu)
1998{
1999 armv7pmu_init(cpu_pmu);
2000 cpu_pmu->name = "armv7_scorpion_mp";
2001 cpu_pmu->map_event = scorpion_map_event;
2002 cpu_pmu->reset = scorpion_pmu_reset;
2003 cpu_pmu->enable = scorpion_pmu_enable_event;
2004 cpu_pmu->disable = scorpion_pmu_disable_event;
2005 cpu_pmu->get_event_idx = scorpion_pmu_get_event_idx;
2006 cpu_pmu->clear_event_idx = scorpion_pmu_clear_event_idx;
2007 return armv7_probe_num_events(cpu_pmu);
2008}
2009
2010static const struct of_device_id armv7_pmu_of_device_ids[] = {
2011 {.compatible = "arm,cortex-a17-pmu", .data = armv7_a17_pmu_init},
2012 {.compatible = "arm,cortex-a15-pmu", .data = armv7_a15_pmu_init},
2013 {.compatible = "arm,cortex-a12-pmu", .data = armv7_a12_pmu_init},
2014 {.compatible = "arm,cortex-a9-pmu", .data = armv7_a9_pmu_init},
2015 {.compatible = "arm,cortex-a8-pmu", .data = armv7_a8_pmu_init},
2016 {.compatible = "arm,cortex-a7-pmu", .data = armv7_a7_pmu_init},
2017 {.compatible = "arm,cortex-a5-pmu", .data = armv7_a5_pmu_init},
2018 {.compatible = "qcom,krait-pmu", .data = krait_pmu_init},
2019 {.compatible = "qcom,scorpion-pmu", .data = scorpion_pmu_init},
2020 {.compatible = "qcom,scorpion-mp-pmu", .data = scorpion_mp_pmu_init},
2021 {},
2022};
2023
2024static const struct pmu_probe_info armv7_pmu_probe_table[] = {
2025 ARM_PMU_PROBE(ARM_CPU_PART_CORTEX_A8, armv7_a8_pmu_init),
2026 ARM_PMU_PROBE(ARM_CPU_PART_CORTEX_A9, armv7_a9_pmu_init),
2027 { /* sentinel value */ }
2028};
2029
2030
2031static int armv7_pmu_device_probe(struct platform_device *pdev)
2032{
2033 return arm_pmu_device_probe(pdev, armv7_pmu_of_device_ids,
2034 armv7_pmu_probe_table);
2035}
2036
2037static struct platform_driver armv7_pmu_driver = {
2038 .driver = {
2039 .name = "armv7-pmu",
2040 .of_match_table = armv7_pmu_of_device_ids,
2041 .suppress_bind_attrs = true,
2042 },
2043 .probe = armv7_pmu_device_probe,
2044};
2045
2046builtin_platform_driver(armv7_pmu_driver);
2047#endif /* CONFIG_CPU_V7 */