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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/*
21 * Common ARMv7 event types
22 *
23 * Note: An implementation may not be able to count all of these events
24 * but the encodings are considered to be `reserved' in the case that
25 * they are not available.
26 */
27enum armv7_perf_types {
28 ARMV7_PERFCTR_PMNC_SW_INCR = 0x00,
29 ARMV7_PERFCTR_IFETCH_MISS = 0x01,
30 ARMV7_PERFCTR_ITLB_MISS = 0x02,
31 ARMV7_PERFCTR_DCACHE_REFILL = 0x03, /* L1 */
32 ARMV7_PERFCTR_DCACHE_ACCESS = 0x04, /* L1 */
33 ARMV7_PERFCTR_DTLB_REFILL = 0x05,
34 ARMV7_PERFCTR_DREAD = 0x06,
35 ARMV7_PERFCTR_DWRITE = 0x07,
36 ARMV7_PERFCTR_INSTR_EXECUTED = 0x08,
37 ARMV7_PERFCTR_EXC_TAKEN = 0x09,
38 ARMV7_PERFCTR_EXC_EXECUTED = 0x0A,
39 ARMV7_PERFCTR_CID_WRITE = 0x0B,
40 /* ARMV7_PERFCTR_PC_WRITE is equivalent to HW_BRANCH_INSTRUCTIONS.
41 * It counts:
42 * - all branch instructions,
43 * - instructions that explicitly write the PC,
44 * - exception generating instructions.
45 */
46 ARMV7_PERFCTR_PC_WRITE = 0x0C,
47 ARMV7_PERFCTR_PC_IMM_BRANCH = 0x0D,
48 ARMV7_PERFCTR_PC_PROC_RETURN = 0x0E,
49 ARMV7_PERFCTR_UNALIGNED_ACCESS = 0x0F,
50
51 /* These events are defined by the PMUv2 supplement (ARM DDI 0457A). */
52 ARMV7_PERFCTR_PC_BRANCH_MIS_PRED = 0x10,
53 ARMV7_PERFCTR_CLOCK_CYCLES = 0x11,
54 ARMV7_PERFCTR_PC_BRANCH_PRED = 0x12,
55 ARMV7_PERFCTR_MEM_ACCESS = 0x13,
56 ARMV7_PERFCTR_L1_ICACHE_ACCESS = 0x14,
57 ARMV7_PERFCTR_L1_DCACHE_WB = 0x15,
58 ARMV7_PERFCTR_L2_DCACHE_ACCESS = 0x16,
59 ARMV7_PERFCTR_L2_DCACHE_REFILL = 0x17,
60 ARMV7_PERFCTR_L2_DCACHE_WB = 0x18,
61 ARMV7_PERFCTR_BUS_ACCESS = 0x19,
62 ARMV7_PERFCTR_MEMORY_ERROR = 0x1A,
63 ARMV7_PERFCTR_INSTR_SPEC = 0x1B,
64 ARMV7_PERFCTR_TTBR_WRITE = 0x1C,
65 ARMV7_PERFCTR_BUS_CYCLES = 0x1D,
66
67 ARMV7_PERFCTR_CPU_CYCLES = 0xFF
68};
69
70/* ARMv7 Cortex-A8 specific event types */
71enum armv7_a8_perf_types {
72 ARMV7_PERFCTR_WRITE_BUFFER_FULL = 0x40,
73 ARMV7_PERFCTR_L2_STORE_MERGED = 0x41,
74 ARMV7_PERFCTR_L2_STORE_BUFF = 0x42,
75 ARMV7_PERFCTR_L2_ACCESS = 0x43,
76 ARMV7_PERFCTR_L2_CACH_MISS = 0x44,
77 ARMV7_PERFCTR_AXI_READ_CYCLES = 0x45,
78 ARMV7_PERFCTR_AXI_WRITE_CYCLES = 0x46,
79 ARMV7_PERFCTR_MEMORY_REPLAY = 0x47,
80 ARMV7_PERFCTR_UNALIGNED_ACCESS_REPLAY = 0x48,
81 ARMV7_PERFCTR_L1_DATA_MISS = 0x49,
82 ARMV7_PERFCTR_L1_INST_MISS = 0x4A,
83 ARMV7_PERFCTR_L1_DATA_COLORING = 0x4B,
84 ARMV7_PERFCTR_L1_NEON_DATA = 0x4C,
85 ARMV7_PERFCTR_L1_NEON_CACH_DATA = 0x4D,
86 ARMV7_PERFCTR_L2_NEON = 0x4E,
87 ARMV7_PERFCTR_L2_NEON_HIT = 0x4F,
88 ARMV7_PERFCTR_L1_INST = 0x50,
89 ARMV7_PERFCTR_PC_RETURN_MIS_PRED = 0x51,
90 ARMV7_PERFCTR_PC_BRANCH_FAILED = 0x52,
91 ARMV7_PERFCTR_PC_BRANCH_TAKEN = 0x53,
92 ARMV7_PERFCTR_PC_BRANCH_EXECUTED = 0x54,
93 ARMV7_PERFCTR_OP_EXECUTED = 0x55,
94 ARMV7_PERFCTR_CYCLES_INST_STALL = 0x56,
95 ARMV7_PERFCTR_CYCLES_INST = 0x57,
96 ARMV7_PERFCTR_CYCLES_NEON_DATA_STALL = 0x58,
97 ARMV7_PERFCTR_CYCLES_NEON_INST_STALL = 0x59,
98 ARMV7_PERFCTR_NEON_CYCLES = 0x5A,
99
100 ARMV7_PERFCTR_PMU0_EVENTS = 0x70,
101 ARMV7_PERFCTR_PMU1_EVENTS = 0x71,
102 ARMV7_PERFCTR_PMU_EVENTS = 0x72,
103};
104
105/* ARMv7 Cortex-A9 specific event types */
106enum armv7_a9_perf_types {
107 ARMV7_PERFCTR_JAVA_HW_BYTECODE_EXEC = 0x40,
108 ARMV7_PERFCTR_JAVA_SW_BYTECODE_EXEC = 0x41,
109 ARMV7_PERFCTR_JAZELLE_BRANCH_EXEC = 0x42,
110
111 ARMV7_PERFCTR_COHERENT_LINE_MISS = 0x50,
112 ARMV7_PERFCTR_COHERENT_LINE_HIT = 0x51,
113
114 ARMV7_PERFCTR_ICACHE_DEP_STALL_CYCLES = 0x60,
115 ARMV7_PERFCTR_DCACHE_DEP_STALL_CYCLES = 0x61,
116 ARMV7_PERFCTR_TLB_MISS_DEP_STALL_CYCLES = 0x62,
117 ARMV7_PERFCTR_STREX_EXECUTED_PASSED = 0x63,
118 ARMV7_PERFCTR_STREX_EXECUTED_FAILED = 0x64,
119 ARMV7_PERFCTR_DATA_EVICTION = 0x65,
120 ARMV7_PERFCTR_ISSUE_STAGE_NO_INST = 0x66,
121 ARMV7_PERFCTR_ISSUE_STAGE_EMPTY = 0x67,
122 ARMV7_PERFCTR_INST_OUT_OF_RENAME_STAGE = 0x68,
123
124 ARMV7_PERFCTR_PREDICTABLE_FUNCT_RETURNS = 0x6E,
125
126 ARMV7_PERFCTR_MAIN_UNIT_EXECUTED_INST = 0x70,
127 ARMV7_PERFCTR_SECOND_UNIT_EXECUTED_INST = 0x71,
128 ARMV7_PERFCTR_LD_ST_UNIT_EXECUTED_INST = 0x72,
129 ARMV7_PERFCTR_FP_EXECUTED_INST = 0x73,
130 ARMV7_PERFCTR_NEON_EXECUTED_INST = 0x74,
131
132 ARMV7_PERFCTR_PLD_FULL_DEP_STALL_CYCLES = 0x80,
133 ARMV7_PERFCTR_DATA_WR_DEP_STALL_CYCLES = 0x81,
134 ARMV7_PERFCTR_ITLB_MISS_DEP_STALL_CYCLES = 0x82,
135 ARMV7_PERFCTR_DTLB_MISS_DEP_STALL_CYCLES = 0x83,
136 ARMV7_PERFCTR_MICRO_ITLB_MISS_DEP_STALL_CYCLES = 0x84,
137 ARMV7_PERFCTR_MICRO_DTLB_MISS_DEP_STALL_CYCLES = 0x85,
138 ARMV7_PERFCTR_DMB_DEP_STALL_CYCLES = 0x86,
139
140 ARMV7_PERFCTR_INTGR_CLK_ENABLED_CYCLES = 0x8A,
141 ARMV7_PERFCTR_DATA_ENGINE_CLK_EN_CYCLES = 0x8B,
142
143 ARMV7_PERFCTR_ISB_INST = 0x90,
144 ARMV7_PERFCTR_DSB_INST = 0x91,
145 ARMV7_PERFCTR_DMB_INST = 0x92,
146 ARMV7_PERFCTR_EXT_INTERRUPTS = 0x93,
147
148 ARMV7_PERFCTR_PLE_CACHE_LINE_RQST_COMPLETED = 0xA0,
149 ARMV7_PERFCTR_PLE_CACHE_LINE_RQST_SKIPPED = 0xA1,
150 ARMV7_PERFCTR_PLE_FIFO_FLUSH = 0xA2,
151 ARMV7_PERFCTR_PLE_RQST_COMPLETED = 0xA3,
152 ARMV7_PERFCTR_PLE_FIFO_OVERFLOW = 0xA4,
153 ARMV7_PERFCTR_PLE_RQST_PROG = 0xA5
154};
155
156/* ARMv7 Cortex-A5 specific event types */
157enum armv7_a5_perf_types {
158 ARMV7_PERFCTR_IRQ_TAKEN = 0x86,
159 ARMV7_PERFCTR_FIQ_TAKEN = 0x87,
160
161 ARMV7_PERFCTR_EXT_MEM_RQST = 0xc0,
162 ARMV7_PERFCTR_NC_EXT_MEM_RQST = 0xc1,
163 ARMV7_PERFCTR_PREFETCH_LINEFILL = 0xc2,
164 ARMV7_PERFCTR_PREFETCH_LINEFILL_DROP = 0xc3,
165 ARMV7_PERFCTR_ENTER_READ_ALLOC = 0xc4,
166 ARMV7_PERFCTR_READ_ALLOC = 0xc5,
167
168 ARMV7_PERFCTR_STALL_SB_FULL = 0xc9,
169};
170
171/* ARMv7 Cortex-A15 specific event types */
172enum armv7_a15_perf_types {
173 ARMV7_PERFCTR_L1_DCACHE_READ_ACCESS = 0x40,
174 ARMV7_PERFCTR_L1_DCACHE_WRITE_ACCESS = 0x41,
175 ARMV7_PERFCTR_L1_DCACHE_READ_REFILL = 0x42,
176 ARMV7_PERFCTR_L1_DCACHE_WRITE_REFILL = 0x43,
177
178 ARMV7_PERFCTR_L1_DTLB_READ_REFILL = 0x4C,
179 ARMV7_PERFCTR_L1_DTLB_WRITE_REFILL = 0x4D,
180
181 ARMV7_PERFCTR_L2_DCACHE_READ_ACCESS = 0x50,
182 ARMV7_PERFCTR_L2_DCACHE_WRITE_ACCESS = 0x51,
183 ARMV7_PERFCTR_L2_DCACHE_READ_REFILL = 0x52,
184 ARMV7_PERFCTR_L2_DCACHE_WRITE_REFILL = 0x53,
185
186 ARMV7_PERFCTR_SPEC_PC_WRITE = 0x76,
187};
188
189/*
190 * Cortex-A8 HW events mapping
191 *
192 * The hardware events that we support. We do support cache operations but
193 * we have harvard caches and no way to combine instruction and data
194 * accesses/misses in hardware.
195 */
196static const unsigned armv7_a8_perf_map[PERF_COUNT_HW_MAX] = {
197 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
198 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
199 [PERF_COUNT_HW_CACHE_REFERENCES] = HW_OP_UNSUPPORTED,
200 [PERF_COUNT_HW_CACHE_MISSES] = HW_OP_UNSUPPORTED,
201 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
202 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
203 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES,
204};
205
206static const unsigned armv7_a8_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
207 [PERF_COUNT_HW_CACHE_OP_MAX]
208 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
209 [C(L1D)] = {
210 /*
211 * The performance counters don't differentiate between read
212 * and write accesses/misses so this isn't strictly correct,
213 * but it's the best we can do. Writes and reads get
214 * combined.
215 */
216 [C(OP_READ)] = {
217 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_DCACHE_ACCESS,
218 [C(RESULT_MISS)] = ARMV7_PERFCTR_DCACHE_REFILL,
219 },
220 [C(OP_WRITE)] = {
221 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_DCACHE_ACCESS,
222 [C(RESULT_MISS)] = ARMV7_PERFCTR_DCACHE_REFILL,
223 },
224 [C(OP_PREFETCH)] = {
225 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
226 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
227 },
228 },
229 [C(L1I)] = {
230 [C(OP_READ)] = {
231 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_INST,
232 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_INST_MISS,
233 },
234 [C(OP_WRITE)] = {
235 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_INST,
236 [C(RESULT_MISS)] = ARMV7_PERFCTR_L1_INST_MISS,
237 },
238 [C(OP_PREFETCH)] = {
239 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
240 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
241 },
242 },
243 [C(LL)] = {
244 [C(OP_READ)] = {
245 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L2_ACCESS,
246 [C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACH_MISS,
247 },
248 [C(OP_WRITE)] = {
249 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L2_ACCESS,
250 [C(RESULT_MISS)] = ARMV7_PERFCTR_L2_CACH_MISS,
251 },
252 [C(OP_PREFETCH)] = {
253 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
254 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
255 },
256 },
257 [C(DTLB)] = {
258 [C(OP_READ)] = {
259 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
260 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
261 },
262 [C(OP_WRITE)] = {
263 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
264 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
265 },
266 [C(OP_PREFETCH)] = {
267 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
268 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
269 },
270 },
271 [C(ITLB)] = {
272 [C(OP_READ)] = {
273 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
274 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
275 },
276 [C(OP_WRITE)] = {
277 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
278 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
279 },
280 [C(OP_PREFETCH)] = {
281 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
282 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
283 },
284 },
285 [C(BPU)] = {
286 [C(OP_READ)] = {
287 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_WRITE,
288 [C(RESULT_MISS)]
289 = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
290 },
291 [C(OP_WRITE)] = {
292 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_WRITE,
293 [C(RESULT_MISS)]
294 = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
295 },
296 [C(OP_PREFETCH)] = {
297 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
298 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
299 },
300 },
301 [C(NODE)] = {
302 [C(OP_READ)] = {
303 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
304 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
305 },
306 [C(OP_WRITE)] = {
307 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
308 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
309 },
310 [C(OP_PREFETCH)] = {
311 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
312 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
313 },
314 },
315};
316
317/*
318 * Cortex-A9 HW events mapping
319 */
320static const unsigned armv7_a9_perf_map[PERF_COUNT_HW_MAX] = {
321 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
322 [PERF_COUNT_HW_INSTRUCTIONS] =
323 ARMV7_PERFCTR_INST_OUT_OF_RENAME_STAGE,
324 [PERF_COUNT_HW_CACHE_REFERENCES] = ARMV7_PERFCTR_DCACHE_ACCESS,
325 [PERF_COUNT_HW_CACHE_MISSES] = ARMV7_PERFCTR_DCACHE_REFILL,
326 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
327 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
328 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_CLOCK_CYCLES,
329};
330
331static const unsigned armv7_a9_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
332 [PERF_COUNT_HW_CACHE_OP_MAX]
333 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
334 [C(L1D)] = {
335 /*
336 * The performance counters don't differentiate between read
337 * and write accesses/misses so this isn't strictly correct,
338 * but it's the best we can do. Writes and reads get
339 * combined.
340 */
341 [C(OP_READ)] = {
342 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_DCACHE_ACCESS,
343 [C(RESULT_MISS)] = ARMV7_PERFCTR_DCACHE_REFILL,
344 },
345 [C(OP_WRITE)] = {
346 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_DCACHE_ACCESS,
347 [C(RESULT_MISS)] = ARMV7_PERFCTR_DCACHE_REFILL,
348 },
349 [C(OP_PREFETCH)] = {
350 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
351 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
352 },
353 },
354 [C(L1I)] = {
355 [C(OP_READ)] = {
356 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
357 [C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
358 },
359 [C(OP_WRITE)] = {
360 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
361 [C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
362 },
363 [C(OP_PREFETCH)] = {
364 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
365 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
366 },
367 },
368 [C(LL)] = {
369 [C(OP_READ)] = {
370 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
371 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
372 },
373 [C(OP_WRITE)] = {
374 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
375 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
376 },
377 [C(OP_PREFETCH)] = {
378 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
379 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
380 },
381 },
382 [C(DTLB)] = {
383 [C(OP_READ)] = {
384 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
385 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
386 },
387 [C(OP_WRITE)] = {
388 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
389 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
390 },
391 [C(OP_PREFETCH)] = {
392 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
393 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
394 },
395 },
396 [C(ITLB)] = {
397 [C(OP_READ)] = {
398 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
399 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
400 },
401 [C(OP_WRITE)] = {
402 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
403 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
404 },
405 [C(OP_PREFETCH)] = {
406 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
407 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
408 },
409 },
410 [C(BPU)] = {
411 [C(OP_READ)] = {
412 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_WRITE,
413 [C(RESULT_MISS)]
414 = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
415 },
416 [C(OP_WRITE)] = {
417 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_WRITE,
418 [C(RESULT_MISS)]
419 = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
420 },
421 [C(OP_PREFETCH)] = {
422 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
423 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
424 },
425 },
426 [C(NODE)] = {
427 [C(OP_READ)] = {
428 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
429 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
430 },
431 [C(OP_WRITE)] = {
432 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
433 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
434 },
435 [C(OP_PREFETCH)] = {
436 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
437 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
438 },
439 },
440};
441
442/*
443 * Cortex-A5 HW events mapping
444 */
445static const unsigned armv7_a5_perf_map[PERF_COUNT_HW_MAX] = {
446 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
447 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
448 [PERF_COUNT_HW_CACHE_REFERENCES] = HW_OP_UNSUPPORTED,
449 [PERF_COUNT_HW_CACHE_MISSES] = HW_OP_UNSUPPORTED,
450 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_PC_WRITE,
451 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
452 [PERF_COUNT_HW_BUS_CYCLES] = HW_OP_UNSUPPORTED,
453};
454
455static const unsigned armv7_a5_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
456 [PERF_COUNT_HW_CACHE_OP_MAX]
457 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
458 [C(L1D)] = {
459 [C(OP_READ)] = {
460 [C(RESULT_ACCESS)]
461 = ARMV7_PERFCTR_DCACHE_ACCESS,
462 [C(RESULT_MISS)]
463 = ARMV7_PERFCTR_DCACHE_REFILL,
464 },
465 [C(OP_WRITE)] = {
466 [C(RESULT_ACCESS)]
467 = ARMV7_PERFCTR_DCACHE_ACCESS,
468 [C(RESULT_MISS)]
469 = ARMV7_PERFCTR_DCACHE_REFILL,
470 },
471 [C(OP_PREFETCH)] = {
472 [C(RESULT_ACCESS)]
473 = ARMV7_PERFCTR_PREFETCH_LINEFILL,
474 [C(RESULT_MISS)]
475 = ARMV7_PERFCTR_PREFETCH_LINEFILL_DROP,
476 },
477 },
478 [C(L1I)] = {
479 [C(OP_READ)] = {
480 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
481 [C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
482 },
483 [C(OP_WRITE)] = {
484 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
485 [C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
486 },
487 /*
488 * The prefetch counters don't differentiate between the I
489 * side and the D side.
490 */
491 [C(OP_PREFETCH)] = {
492 [C(RESULT_ACCESS)]
493 = ARMV7_PERFCTR_PREFETCH_LINEFILL,
494 [C(RESULT_MISS)]
495 = ARMV7_PERFCTR_PREFETCH_LINEFILL_DROP,
496 },
497 },
498 [C(LL)] = {
499 [C(OP_READ)] = {
500 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
501 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
502 },
503 [C(OP_WRITE)] = {
504 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
505 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
506 },
507 [C(OP_PREFETCH)] = {
508 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
509 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
510 },
511 },
512 [C(DTLB)] = {
513 [C(OP_READ)] = {
514 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
515 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
516 },
517 [C(OP_WRITE)] = {
518 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
519 [C(RESULT_MISS)] = ARMV7_PERFCTR_DTLB_REFILL,
520 },
521 [C(OP_PREFETCH)] = {
522 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
523 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
524 },
525 },
526 [C(ITLB)] = {
527 [C(OP_READ)] = {
528 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
529 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
530 },
531 [C(OP_WRITE)] = {
532 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
533 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
534 },
535 [C(OP_PREFETCH)] = {
536 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
537 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
538 },
539 },
540 [C(BPU)] = {
541 [C(OP_READ)] = {
542 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
543 [C(RESULT_MISS)]
544 = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
545 },
546 [C(OP_WRITE)] = {
547 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
548 [C(RESULT_MISS)]
549 = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
550 },
551 [C(OP_PREFETCH)] = {
552 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
553 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
554 },
555 },
556};
557
558/*
559 * Cortex-A15 HW events mapping
560 */
561static const unsigned armv7_a15_perf_map[PERF_COUNT_HW_MAX] = {
562 [PERF_COUNT_HW_CPU_CYCLES] = ARMV7_PERFCTR_CPU_CYCLES,
563 [PERF_COUNT_HW_INSTRUCTIONS] = ARMV7_PERFCTR_INSTR_EXECUTED,
564 [PERF_COUNT_HW_CACHE_REFERENCES] = HW_OP_UNSUPPORTED,
565 [PERF_COUNT_HW_CACHE_MISSES] = HW_OP_UNSUPPORTED,
566 [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = ARMV7_PERFCTR_SPEC_PC_WRITE,
567 [PERF_COUNT_HW_BRANCH_MISSES] = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
568 [PERF_COUNT_HW_BUS_CYCLES] = ARMV7_PERFCTR_BUS_CYCLES,
569};
570
571static const unsigned armv7_a15_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
572 [PERF_COUNT_HW_CACHE_OP_MAX]
573 [PERF_COUNT_HW_CACHE_RESULT_MAX] = {
574 [C(L1D)] = {
575 [C(OP_READ)] = {
576 [C(RESULT_ACCESS)]
577 = ARMV7_PERFCTR_L1_DCACHE_READ_ACCESS,
578 [C(RESULT_MISS)]
579 = ARMV7_PERFCTR_L1_DCACHE_READ_REFILL,
580 },
581 [C(OP_WRITE)] = {
582 [C(RESULT_ACCESS)]
583 = ARMV7_PERFCTR_L1_DCACHE_WRITE_ACCESS,
584 [C(RESULT_MISS)]
585 = ARMV7_PERFCTR_L1_DCACHE_WRITE_REFILL,
586 },
587 [C(OP_PREFETCH)] = {
588 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
589 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
590 },
591 },
592 [C(L1I)] = {
593 /*
594 * Not all performance counters differentiate between read
595 * and write accesses/misses so we're not always strictly
596 * correct, but it's the best we can do. Writes and reads get
597 * combined in these cases.
598 */
599 [C(OP_READ)] = {
600 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
601 [C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
602 },
603 [C(OP_WRITE)] = {
604 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_L1_ICACHE_ACCESS,
605 [C(RESULT_MISS)] = ARMV7_PERFCTR_IFETCH_MISS,
606 },
607 [C(OP_PREFETCH)] = {
608 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
609 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
610 },
611 },
612 [C(LL)] = {
613 [C(OP_READ)] = {
614 [C(RESULT_ACCESS)]
615 = ARMV7_PERFCTR_L2_DCACHE_READ_ACCESS,
616 [C(RESULT_MISS)]
617 = ARMV7_PERFCTR_L2_DCACHE_READ_REFILL,
618 },
619 [C(OP_WRITE)] = {
620 [C(RESULT_ACCESS)]
621 = ARMV7_PERFCTR_L2_DCACHE_WRITE_ACCESS,
622 [C(RESULT_MISS)]
623 = ARMV7_PERFCTR_L2_DCACHE_WRITE_REFILL,
624 },
625 [C(OP_PREFETCH)] = {
626 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
627 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
628 },
629 },
630 [C(DTLB)] = {
631 [C(OP_READ)] = {
632 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
633 [C(RESULT_MISS)]
634 = ARMV7_PERFCTR_L1_DTLB_READ_REFILL,
635 },
636 [C(OP_WRITE)] = {
637 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
638 [C(RESULT_MISS)]
639 = ARMV7_PERFCTR_L1_DTLB_WRITE_REFILL,
640 },
641 [C(OP_PREFETCH)] = {
642 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
643 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
644 },
645 },
646 [C(ITLB)] = {
647 [C(OP_READ)] = {
648 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
649 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
650 },
651 [C(OP_WRITE)] = {
652 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
653 [C(RESULT_MISS)] = ARMV7_PERFCTR_ITLB_MISS,
654 },
655 [C(OP_PREFETCH)] = {
656 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
657 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
658 },
659 },
660 [C(BPU)] = {
661 [C(OP_READ)] = {
662 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
663 [C(RESULT_MISS)]
664 = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
665 },
666 [C(OP_WRITE)] = {
667 [C(RESULT_ACCESS)] = ARMV7_PERFCTR_PC_BRANCH_PRED,
668 [C(RESULT_MISS)]
669 = ARMV7_PERFCTR_PC_BRANCH_MIS_PRED,
670 },
671 [C(OP_PREFETCH)] = {
672 [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED,
673 [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED,
674 },
675 },
676};
677
678/*
679 * Perf Events counters
680 */
681enum armv7_counters {
682 ARMV7_CYCLE_COUNTER = 1, /* Cycle counter */
683 ARMV7_COUNTER0 = 2, /* First event counter */
684};
685
686/*
687 * The cycle counter is ARMV7_CYCLE_COUNTER.
688 * The first event counter is ARMV7_COUNTER0.
689 * The last event counter is (ARMV7_COUNTER0 + armpmu->num_events - 1).
690 */
691#define ARMV7_COUNTER_LAST (ARMV7_COUNTER0 + armpmu->num_events - 1)
692
693/*
694 * ARMv7 low level PMNC access
695 */
696
697/*
698 * Per-CPU PMNC: config reg
699 */
700#define ARMV7_PMNC_E (1 << 0) /* Enable all counters */
701#define ARMV7_PMNC_P (1 << 1) /* Reset all counters */
702#define ARMV7_PMNC_C (1 << 2) /* Cycle counter reset */
703#define ARMV7_PMNC_D (1 << 3) /* CCNT counts every 64th cpu cycle */
704#define ARMV7_PMNC_X (1 << 4) /* Export to ETM */
705#define ARMV7_PMNC_DP (1 << 5) /* Disable CCNT if non-invasive debug*/
706#define ARMV7_PMNC_N_SHIFT 11 /* Number of counters supported */
707#define ARMV7_PMNC_N_MASK 0x1f
708#define ARMV7_PMNC_MASK 0x3f /* Mask for writable bits */
709
710/*
711 * Available counters
712 */
713#define ARMV7_CNT0 0 /* First event counter */
714#define ARMV7_CCNT 31 /* Cycle counter */
715
716/* Perf Event to low level counters mapping */
717#define ARMV7_EVENT_CNT_TO_CNTx (ARMV7_COUNTER0 - ARMV7_CNT0)
718
719/*
720 * CNTENS: counters enable reg
721 */
722#define ARMV7_CNTENS_P(idx) (1 << (idx - ARMV7_EVENT_CNT_TO_CNTx))
723#define ARMV7_CNTENS_C (1 << ARMV7_CCNT)
724
725/*
726 * CNTENC: counters disable reg
727 */
728#define ARMV7_CNTENC_P(idx) (1 << (idx - ARMV7_EVENT_CNT_TO_CNTx))
729#define ARMV7_CNTENC_C (1 << ARMV7_CCNT)
730
731/*
732 * INTENS: counters overflow interrupt enable reg
733 */
734#define ARMV7_INTENS_P(idx) (1 << (idx - ARMV7_EVENT_CNT_TO_CNTx))
735#define ARMV7_INTENS_C (1 << ARMV7_CCNT)
736
737/*
738 * INTENC: counters overflow interrupt disable reg
739 */
740#define ARMV7_INTENC_P(idx) (1 << (idx - ARMV7_EVENT_CNT_TO_CNTx))
741#define ARMV7_INTENC_C (1 << ARMV7_CCNT)
742
743/*
744 * EVTSEL: Event selection reg
745 */
746#define ARMV7_EVTSEL_MASK 0xff /* Mask for writable bits */
747
748/*
749 * SELECT: Counter selection reg
750 */
751#define ARMV7_SELECT_MASK 0x1f /* Mask for writable bits */
752
753/*
754 * FLAG: counters overflow flag status reg
755 */
756#define ARMV7_FLAG_P(idx) (1 << (idx - ARMV7_EVENT_CNT_TO_CNTx))
757#define ARMV7_FLAG_C (1 << ARMV7_CCNT)
758#define ARMV7_FLAG_MASK 0xffffffff /* Mask for writable bits */
759#define ARMV7_OVERFLOWED_MASK ARMV7_FLAG_MASK
760
761static inline unsigned long armv7_pmnc_read(void)
762{
763 u32 val;
764 asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r"(val));
765 return val;
766}
767
768static inline void armv7_pmnc_write(unsigned long val)
769{
770 val &= ARMV7_PMNC_MASK;
771 isb();
772 asm volatile("mcr p15, 0, %0, c9, c12, 0" : : "r"(val));
773}
774
775static inline int armv7_pmnc_has_overflowed(unsigned long pmnc)
776{
777 return pmnc & ARMV7_OVERFLOWED_MASK;
778}
779
780static inline int armv7_pmnc_counter_has_overflowed(unsigned long pmnc,
781 enum armv7_counters counter)
782{
783 int ret = 0;
784
785 if (counter == ARMV7_CYCLE_COUNTER)
786 ret = pmnc & ARMV7_FLAG_C;
787 else if ((counter >= ARMV7_COUNTER0) && (counter <= ARMV7_COUNTER_LAST))
788 ret = pmnc & ARMV7_FLAG_P(counter);
789 else
790 pr_err("CPU%u checking wrong counter %d overflow status\n",
791 smp_processor_id(), counter);
792
793 return ret;
794}
795
796static inline int armv7_pmnc_select_counter(unsigned int idx)
797{
798 u32 val;
799
800 if ((idx < ARMV7_COUNTER0) || (idx > ARMV7_COUNTER_LAST)) {
801 pr_err("CPU%u selecting wrong PMNC counter"
802 " %d\n", smp_processor_id(), idx);
803 return -1;
804 }
805
806 val = (idx - ARMV7_EVENT_CNT_TO_CNTx) & ARMV7_SELECT_MASK;
807 asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r" (val));
808 isb();
809
810 return idx;
811}
812
813static inline u32 armv7pmu_read_counter(int idx)
814{
815 unsigned long value = 0;
816
817 if (idx == ARMV7_CYCLE_COUNTER)
818 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (value));
819 else if ((idx >= ARMV7_COUNTER0) && (idx <= ARMV7_COUNTER_LAST)) {
820 if (armv7_pmnc_select_counter(idx) == idx)
821 asm volatile("mrc p15, 0, %0, c9, c13, 2"
822 : "=r" (value));
823 } else
824 pr_err("CPU%u reading wrong counter %d\n",
825 smp_processor_id(), idx);
826
827 return value;
828}
829
830static inline void armv7pmu_write_counter(int idx, u32 value)
831{
832 if (idx == ARMV7_CYCLE_COUNTER)
833 asm volatile("mcr p15, 0, %0, c9, c13, 0" : : "r" (value));
834 else if ((idx >= ARMV7_COUNTER0) && (idx <= ARMV7_COUNTER_LAST)) {
835 if (armv7_pmnc_select_counter(idx) == idx)
836 asm volatile("mcr p15, 0, %0, c9, c13, 2"
837 : : "r" (value));
838 } else
839 pr_err("CPU%u writing wrong counter %d\n",
840 smp_processor_id(), idx);
841}
842
843static inline void armv7_pmnc_write_evtsel(unsigned int idx, u32 val)
844{
845 if (armv7_pmnc_select_counter(idx) == idx) {
846 val &= ARMV7_EVTSEL_MASK;
847 asm volatile("mcr p15, 0, %0, c9, c13, 1" : : "r" (val));
848 }
849}
850
851static inline u32 armv7_pmnc_enable_counter(unsigned int idx)
852{
853 u32 val;
854
855 if ((idx != ARMV7_CYCLE_COUNTER) &&
856 ((idx < ARMV7_COUNTER0) || (idx > ARMV7_COUNTER_LAST))) {
857 pr_err("CPU%u enabling wrong PMNC counter"
858 " %d\n", smp_processor_id(), idx);
859 return -1;
860 }
861
862 if (idx == ARMV7_CYCLE_COUNTER)
863 val = ARMV7_CNTENS_C;
864 else
865 val = ARMV7_CNTENS_P(idx);
866
867 asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r" (val));
868
869 return idx;
870}
871
872static inline u32 armv7_pmnc_disable_counter(unsigned int idx)
873{
874 u32 val;
875
876
877 if ((idx != ARMV7_CYCLE_COUNTER) &&
878 ((idx < ARMV7_COUNTER0) || (idx > ARMV7_COUNTER_LAST))) {
879 pr_err("CPU%u disabling wrong PMNC counter"
880 " %d\n", smp_processor_id(), idx);
881 return -1;
882 }
883
884 if (idx == ARMV7_CYCLE_COUNTER)
885 val = ARMV7_CNTENC_C;
886 else
887 val = ARMV7_CNTENC_P(idx);
888
889 asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r" (val));
890
891 return idx;
892}
893
894static inline u32 armv7_pmnc_enable_intens(unsigned int idx)
895{
896 u32 val;
897
898 if ((idx != ARMV7_CYCLE_COUNTER) &&
899 ((idx < ARMV7_COUNTER0) || (idx > ARMV7_COUNTER_LAST))) {
900 pr_err("CPU%u enabling wrong PMNC counter"
901 " interrupt enable %d\n", smp_processor_id(), idx);
902 return -1;
903 }
904
905 if (idx == ARMV7_CYCLE_COUNTER)
906 val = ARMV7_INTENS_C;
907 else
908 val = ARMV7_INTENS_P(idx);
909
910 asm volatile("mcr p15, 0, %0, c9, c14, 1" : : "r" (val));
911
912 return idx;
913}
914
915static inline u32 armv7_pmnc_disable_intens(unsigned int idx)
916{
917 u32 val;
918
919 if ((idx != ARMV7_CYCLE_COUNTER) &&
920 ((idx < ARMV7_COUNTER0) || (idx > ARMV7_COUNTER_LAST))) {
921 pr_err("CPU%u disabling wrong PMNC counter"
922 " interrupt enable %d\n", smp_processor_id(), idx);
923 return -1;
924 }
925
926 if (idx == ARMV7_CYCLE_COUNTER)
927 val = ARMV7_INTENC_C;
928 else
929 val = ARMV7_INTENC_P(idx);
930
931 asm volatile("mcr p15, 0, %0, c9, c14, 2" : : "r" (val));
932
933 return idx;
934}
935
936static inline u32 armv7_pmnc_getreset_flags(void)
937{
938 u32 val;
939
940 /* Read */
941 asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val));
942
943 /* Write to clear flags */
944 val &= ARMV7_FLAG_MASK;
945 asm volatile("mcr p15, 0, %0, c9, c12, 3" : : "r" (val));
946
947 return val;
948}
949
950#ifdef DEBUG
951static void armv7_pmnc_dump_regs(void)
952{
953 u32 val;
954 unsigned int cnt;
955
956 printk(KERN_INFO "PMNC registers dump:\n");
957
958 asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r" (val));
959 printk(KERN_INFO "PMNC =0x%08x\n", val);
960
961 asm volatile("mrc p15, 0, %0, c9, c12, 1" : "=r" (val));
962 printk(KERN_INFO "CNTENS=0x%08x\n", val);
963
964 asm volatile("mrc p15, 0, %0, c9, c14, 1" : "=r" (val));
965 printk(KERN_INFO "INTENS=0x%08x\n", val);
966
967 asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val));
968 printk(KERN_INFO "FLAGS =0x%08x\n", val);
969
970 asm volatile("mrc p15, 0, %0, c9, c12, 5" : "=r" (val));
971 printk(KERN_INFO "SELECT=0x%08x\n", val);
972
973 asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (val));
974 printk(KERN_INFO "CCNT =0x%08x\n", val);
975
976 for (cnt = ARMV7_COUNTER0; cnt < ARMV7_COUNTER_LAST; cnt++) {
977 armv7_pmnc_select_counter(cnt);
978 asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (val));
979 printk(KERN_INFO "CNT[%d] count =0x%08x\n",
980 cnt-ARMV7_EVENT_CNT_TO_CNTx, val);
981 asm volatile("mrc p15, 0, %0, c9, c13, 1" : "=r" (val));
982 printk(KERN_INFO "CNT[%d] evtsel=0x%08x\n",
983 cnt-ARMV7_EVENT_CNT_TO_CNTx, val);
984 }
985}
986#endif
987
988static void armv7pmu_enable_event(struct hw_perf_event *hwc, int idx)
989{
990 unsigned long flags;
991
992 /*
993 * Enable counter and interrupt, and set the counter to count
994 * the event that we're interested in.
995 */
996 raw_spin_lock_irqsave(&pmu_lock, flags);
997
998 /*
999 * Disable counter
1000 */
1001 armv7_pmnc_disable_counter(idx);
1002
1003 /*
1004 * Set event (if destined for PMNx counters)
1005 * We don't need to set the event if it's a cycle count
1006 */
1007 if (idx != ARMV7_CYCLE_COUNTER)
1008 armv7_pmnc_write_evtsel(idx, hwc->config_base);
1009
1010 /*
1011 * Enable interrupt for this counter
1012 */
1013 armv7_pmnc_enable_intens(idx);
1014
1015 /*
1016 * Enable counter
1017 */
1018 armv7_pmnc_enable_counter(idx);
1019
1020 raw_spin_unlock_irqrestore(&pmu_lock, flags);
1021}
1022
1023static void armv7pmu_disable_event(struct hw_perf_event *hwc, int idx)
1024{
1025 unsigned long flags;
1026
1027 /*
1028 * Disable counter and interrupt
1029 */
1030 raw_spin_lock_irqsave(&pmu_lock, flags);
1031
1032 /*
1033 * Disable counter
1034 */
1035 armv7_pmnc_disable_counter(idx);
1036
1037 /*
1038 * Disable interrupt for this counter
1039 */
1040 armv7_pmnc_disable_intens(idx);
1041
1042 raw_spin_unlock_irqrestore(&pmu_lock, flags);
1043}
1044
1045static irqreturn_t armv7pmu_handle_irq(int irq_num, void *dev)
1046{
1047 unsigned long pmnc;
1048 struct perf_sample_data data;
1049 struct cpu_hw_events *cpuc;
1050 struct pt_regs *regs;
1051 int idx;
1052
1053 /*
1054 * Get and reset the IRQ flags
1055 */
1056 pmnc = armv7_pmnc_getreset_flags();
1057
1058 /*
1059 * Did an overflow occur?
1060 */
1061 if (!armv7_pmnc_has_overflowed(pmnc))
1062 return IRQ_NONE;
1063
1064 /*
1065 * Handle the counter(s) overflow(s)
1066 */
1067 regs = get_irq_regs();
1068
1069 perf_sample_data_init(&data, 0);
1070
1071 cpuc = &__get_cpu_var(cpu_hw_events);
1072 for (idx = 0; idx <= armpmu->num_events; ++idx) {
1073 struct perf_event *event = cpuc->events[idx];
1074 struct hw_perf_event *hwc;
1075
1076 if (!test_bit(idx, cpuc->active_mask))
1077 continue;
1078
1079 /*
1080 * We have a single interrupt for all counters. Check that
1081 * each counter has overflowed before we process it.
1082 */
1083 if (!armv7_pmnc_counter_has_overflowed(pmnc, idx))
1084 continue;
1085
1086 hwc = &event->hw;
1087 armpmu_event_update(event, hwc, idx, 1);
1088 data.period = event->hw.last_period;
1089 if (!armpmu_event_set_period(event, hwc, idx))
1090 continue;
1091
1092 if (perf_event_overflow(event, &data, regs))
1093 armpmu->disable(hwc, idx);
1094 }
1095
1096 /*
1097 * Handle the pending perf events.
1098 *
1099 * Note: this call *must* be run with interrupts disabled. For
1100 * platforms that can have the PMU interrupts raised as an NMI, this
1101 * will not work.
1102 */
1103 irq_work_run();
1104
1105 return IRQ_HANDLED;
1106}
1107
1108static void armv7pmu_start(void)
1109{
1110 unsigned long flags;
1111
1112 raw_spin_lock_irqsave(&pmu_lock, flags);
1113 /* Enable all counters */
1114 armv7_pmnc_write(armv7_pmnc_read() | ARMV7_PMNC_E);
1115 raw_spin_unlock_irqrestore(&pmu_lock, flags);
1116}
1117
1118static void armv7pmu_stop(void)
1119{
1120 unsigned long flags;
1121
1122 raw_spin_lock_irqsave(&pmu_lock, flags);
1123 /* Disable all counters */
1124 armv7_pmnc_write(armv7_pmnc_read() & ~ARMV7_PMNC_E);
1125 raw_spin_unlock_irqrestore(&pmu_lock, flags);
1126}
1127
1128static int armv7pmu_get_event_idx(struct cpu_hw_events *cpuc,
1129 struct hw_perf_event *event)
1130{
1131 int idx;
1132
1133 /* Always place a cycle counter into the cycle counter. */
1134 if (event->config_base == ARMV7_PERFCTR_CPU_CYCLES) {
1135 if (test_and_set_bit(ARMV7_CYCLE_COUNTER, cpuc->used_mask))
1136 return -EAGAIN;
1137
1138 return ARMV7_CYCLE_COUNTER;
1139 } else {
1140 /*
1141 * For anything other than a cycle counter, try and use
1142 * the events counters
1143 */
1144 for (idx = ARMV7_COUNTER0; idx <= armpmu->num_events; ++idx) {
1145 if (!test_and_set_bit(idx, cpuc->used_mask))
1146 return idx;
1147 }
1148
1149 /* The counters are all in use. */
1150 return -EAGAIN;
1151 }
1152}
1153
1154static void armv7pmu_reset(void *info)
1155{
1156 u32 idx, nb_cnt = armpmu->num_events;
1157
1158 /* The counter and interrupt enable registers are unknown at reset. */
1159 for (idx = 1; idx < nb_cnt; ++idx)
1160 armv7pmu_disable_event(NULL, idx);
1161
1162 /* Initialize & Reset PMNC: C and P bits */
1163 armv7_pmnc_write(ARMV7_PMNC_P | ARMV7_PMNC_C);
1164}
1165
1166static struct arm_pmu armv7pmu = {
1167 .handle_irq = armv7pmu_handle_irq,
1168 .enable = armv7pmu_enable_event,
1169 .disable = armv7pmu_disable_event,
1170 .read_counter = armv7pmu_read_counter,
1171 .write_counter = armv7pmu_write_counter,
1172 .get_event_idx = armv7pmu_get_event_idx,
1173 .start = armv7pmu_start,
1174 .stop = armv7pmu_stop,
1175 .reset = armv7pmu_reset,
1176 .raw_event_mask = 0xFF,
1177 .max_period = (1LLU << 32) - 1,
1178};
1179
1180static u32 __init armv7_read_num_pmnc_events(void)
1181{
1182 u32 nb_cnt;
1183
1184 /* Read the nb of CNTx counters supported from PMNC */
1185 nb_cnt = (armv7_pmnc_read() >> ARMV7_PMNC_N_SHIFT) & ARMV7_PMNC_N_MASK;
1186
1187 /* Add the CPU cycles counter and return */
1188 return nb_cnt + 1;
1189}
1190
1191static const struct arm_pmu *__init armv7_a8_pmu_init(void)
1192{
1193 armv7pmu.id = ARM_PERF_PMU_ID_CA8;
1194 armv7pmu.name = "ARMv7 Cortex-A8";
1195 armv7pmu.cache_map = &armv7_a8_perf_cache_map;
1196 armv7pmu.event_map = &armv7_a8_perf_map;
1197 armv7pmu.num_events = armv7_read_num_pmnc_events();
1198 return &armv7pmu;
1199}
1200
1201static const struct arm_pmu *__init armv7_a9_pmu_init(void)
1202{
1203 armv7pmu.id = ARM_PERF_PMU_ID_CA9;
1204 armv7pmu.name = "ARMv7 Cortex-A9";
1205 armv7pmu.cache_map = &armv7_a9_perf_cache_map;
1206 armv7pmu.event_map = &armv7_a9_perf_map;
1207 armv7pmu.num_events = armv7_read_num_pmnc_events();
1208 return &armv7pmu;
1209}
1210
1211static const struct arm_pmu *__init armv7_a5_pmu_init(void)
1212{
1213 armv7pmu.id = ARM_PERF_PMU_ID_CA5;
1214 armv7pmu.name = "ARMv7 Cortex-A5";
1215 armv7pmu.cache_map = &armv7_a5_perf_cache_map;
1216 armv7pmu.event_map = &armv7_a5_perf_map;
1217 armv7pmu.num_events = armv7_read_num_pmnc_events();
1218 return &armv7pmu;
1219}
1220
1221static const struct arm_pmu *__init armv7_a15_pmu_init(void)
1222{
1223 armv7pmu.id = ARM_PERF_PMU_ID_CA15;
1224 armv7pmu.name = "ARMv7 Cortex-A15";
1225 armv7pmu.cache_map = &armv7_a15_perf_cache_map;
1226 armv7pmu.event_map = &armv7_a15_perf_map;
1227 armv7pmu.num_events = armv7_read_num_pmnc_events();
1228 return &armv7pmu;
1229}
1230#else
1231static const struct arm_pmu *__init armv7_a8_pmu_init(void)
1232{
1233 return NULL;
1234}
1235
1236static const struct arm_pmu *__init armv7_a9_pmu_init(void)
1237{
1238 return NULL;
1239}
1240
1241static const struct arm_pmu *__init armv7_a5_pmu_init(void)
1242{
1243 return NULL;
1244}
1245
1246static const struct arm_pmu *__init armv7_a15_pmu_init(void)
1247{
1248 return NULL;
1249}
1250#endif /* CONFIG_CPU_V7 */
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 */