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3a9ab99e DCZ |
1 | #if defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64) || \ |
2 | defined(CONFIG_CPU_R10000) || defined(CONFIG_CPU_SB1) | |
3 | ||
4 | #define M_CONFIG1_PC (1 << 4) | |
5 | ||
6 | #define M_PERFCTL_EXL (1UL << 0) | |
7 | #define M_PERFCTL_KERNEL (1UL << 1) | |
8 | #define M_PERFCTL_SUPERVISOR (1UL << 2) | |
9 | #define M_PERFCTL_USER (1UL << 3) | |
10 | #define M_PERFCTL_INTERRUPT_ENABLE (1UL << 4) | |
11 | #define M_PERFCTL_EVENT(event) (((event) & 0x3ff) << 5) | |
12 | #define M_PERFCTL_VPEID(vpe) ((vpe) << 16) | |
13 | #define M_PERFCTL_MT_EN(filter) ((filter) << 20) | |
14 | #define M_TC_EN_ALL M_PERFCTL_MT_EN(0) | |
15 | #define M_TC_EN_VPE M_PERFCTL_MT_EN(1) | |
16 | #define M_TC_EN_TC M_PERFCTL_MT_EN(2) | |
17 | #define M_PERFCTL_TCID(tcid) ((tcid) << 22) | |
18 | #define M_PERFCTL_WIDE (1UL << 30) | |
19 | #define M_PERFCTL_MORE (1UL << 31) | |
20 | ||
21 | #define M_PERFCTL_COUNT_EVENT_WHENEVER (M_PERFCTL_EXL | \ | |
22 | M_PERFCTL_KERNEL | \ | |
23 | M_PERFCTL_USER | \ | |
24 | M_PERFCTL_SUPERVISOR | \ | |
25 | M_PERFCTL_INTERRUPT_ENABLE) | |
26 | ||
27 | #ifdef CONFIG_MIPS_MT_SMP | |
28 | #define M_PERFCTL_CONFIG_MASK 0x3fff801f | |
29 | #else | |
30 | #define M_PERFCTL_CONFIG_MASK 0x1f | |
31 | #endif | |
32 | #define M_PERFCTL_EVENT_MASK 0xfe0 | |
33 | ||
34 | #define M_COUNTER_OVERFLOW (1UL << 31) | |
35 | ||
36 | #ifdef CONFIG_MIPS_MT_SMP | |
37 | static int cpu_has_mipsmt_pertccounters; | |
38 | ||
39 | /* | |
40 | * FIXME: For VSMP, vpe_id() is redefined for Perf-events, because | |
41 | * cpu_data[cpuid].vpe_id reports 0 for _both_ CPUs. | |
42 | */ | |
43 | #if defined(CONFIG_HW_PERF_EVENTS) | |
44 | #define vpe_id() (cpu_has_mipsmt_pertccounters ? \ | |
45 | 0 : smp_processor_id()) | |
46 | #else | |
47 | #define vpe_id() (cpu_has_mipsmt_pertccounters ? \ | |
48 | 0 : cpu_data[smp_processor_id()].vpe_id) | |
49 | #endif | |
50 | ||
51 | /* Copied from op_model_mipsxx.c */ | |
52 | static inline unsigned int vpe_shift(void) | |
53 | { | |
54 | if (num_possible_cpus() > 1) | |
55 | return 1; | |
56 | ||
57 | return 0; | |
58 | } | |
59 | #else /* !CONFIG_MIPS_MT_SMP */ | |
60 | #define vpe_id() 0 | |
61 | ||
62 | static inline unsigned int vpe_shift(void) | |
63 | { | |
64 | return 0; | |
65 | } | |
66 | #endif /* CONFIG_MIPS_MT_SMP */ | |
67 | ||
68 | static inline unsigned int | |
69 | counters_total_to_per_cpu(unsigned int counters) | |
70 | { | |
71 | return counters >> vpe_shift(); | |
72 | } | |
73 | ||
74 | static inline unsigned int | |
75 | counters_per_cpu_to_total(unsigned int counters) | |
76 | { | |
77 | return counters << vpe_shift(); | |
78 | } | |
79 | ||
80 | #define __define_perf_accessors(r, n, np) \ | |
81 | \ | |
82 | static inline unsigned int r_c0_ ## r ## n(void) \ | |
83 | { \ | |
84 | unsigned int cpu = vpe_id(); \ | |
85 | \ | |
86 | switch (cpu) { \ | |
87 | case 0: \ | |
88 | return read_c0_ ## r ## n(); \ | |
89 | case 1: \ | |
90 | return read_c0_ ## r ## np(); \ | |
91 | default: \ | |
92 | BUG(); \ | |
93 | } \ | |
94 | return 0; \ | |
95 | } \ | |
96 | \ | |
97 | static inline void w_c0_ ## r ## n(unsigned int value) \ | |
98 | { \ | |
99 | unsigned int cpu = vpe_id(); \ | |
100 | \ | |
101 | switch (cpu) { \ | |
102 | case 0: \ | |
103 | write_c0_ ## r ## n(value); \ | |
104 | return; \ | |
105 | case 1: \ | |
106 | write_c0_ ## r ## np(value); \ | |
107 | return; \ | |
108 | default: \ | |
109 | BUG(); \ | |
110 | } \ | |
111 | return; \ | |
112 | } \ | |
113 | ||
114 | __define_perf_accessors(perfcntr, 0, 2) | |
115 | __define_perf_accessors(perfcntr, 1, 3) | |
116 | __define_perf_accessors(perfcntr, 2, 0) | |
117 | __define_perf_accessors(perfcntr, 3, 1) | |
118 | ||
119 | __define_perf_accessors(perfctrl, 0, 2) | |
120 | __define_perf_accessors(perfctrl, 1, 3) | |
121 | __define_perf_accessors(perfctrl, 2, 0) | |
122 | __define_perf_accessors(perfctrl, 3, 1) | |
123 | ||
124 | static inline int __n_counters(void) | |
125 | { | |
126 | if (!(read_c0_config1() & M_CONFIG1_PC)) | |
127 | return 0; | |
128 | if (!(read_c0_perfctrl0() & M_PERFCTL_MORE)) | |
129 | return 1; | |
130 | if (!(read_c0_perfctrl1() & M_PERFCTL_MORE)) | |
131 | return 2; | |
132 | if (!(read_c0_perfctrl2() & M_PERFCTL_MORE)) | |
133 | return 3; | |
134 | ||
135 | return 4; | |
136 | } | |
137 | ||
138 | static inline int n_counters(void) | |
139 | { | |
140 | int counters; | |
141 | ||
142 | switch (current_cpu_type()) { | |
143 | case CPU_R10000: | |
144 | counters = 2; | |
145 | break; | |
146 | ||
147 | case CPU_R12000: | |
148 | case CPU_R14000: | |
149 | counters = 4; | |
150 | break; | |
151 | ||
152 | default: | |
153 | counters = __n_counters(); | |
154 | } | |
155 | ||
156 | return counters; | |
157 | } | |
158 | ||
159 | static void reset_counters(void *arg) | |
160 | { | |
161 | int counters = (int)(long)arg; | |
162 | switch (counters) { | |
163 | case 4: | |
164 | w_c0_perfctrl3(0); | |
165 | w_c0_perfcntr3(0); | |
166 | case 3: | |
167 | w_c0_perfctrl2(0); | |
168 | w_c0_perfcntr2(0); | |
169 | case 2: | |
170 | w_c0_perfctrl1(0); | |
171 | w_c0_perfcntr1(0); | |
172 | case 1: | |
173 | w_c0_perfctrl0(0); | |
174 | w_c0_perfcntr0(0); | |
175 | } | |
176 | } | |
177 | ||
178 | static inline u64 | |
179 | mipsxx_pmu_read_counter(unsigned int idx) | |
180 | { | |
181 | switch (idx) { | |
182 | case 0: | |
183 | return r_c0_perfcntr0(); | |
184 | case 1: | |
185 | return r_c0_perfcntr1(); | |
186 | case 2: | |
187 | return r_c0_perfcntr2(); | |
188 | case 3: | |
189 | return r_c0_perfcntr3(); | |
190 | default: | |
191 | WARN_ONCE(1, "Invalid performance counter number (%d)\n", idx); | |
192 | return 0; | |
193 | } | |
194 | } | |
195 | ||
196 | static inline void | |
197 | mipsxx_pmu_write_counter(unsigned int idx, u64 val) | |
198 | { | |
199 | switch (idx) { | |
200 | case 0: | |
201 | w_c0_perfcntr0(val); | |
202 | return; | |
203 | case 1: | |
204 | w_c0_perfcntr1(val); | |
205 | return; | |
206 | case 2: | |
207 | w_c0_perfcntr2(val); | |
208 | return; | |
209 | case 3: | |
210 | w_c0_perfcntr3(val); | |
211 | return; | |
212 | } | |
213 | } | |
214 | ||
215 | static inline unsigned int | |
216 | mipsxx_pmu_read_control(unsigned int idx) | |
217 | { | |
218 | switch (idx) { | |
219 | case 0: | |
220 | return r_c0_perfctrl0(); | |
221 | case 1: | |
222 | return r_c0_perfctrl1(); | |
223 | case 2: | |
224 | return r_c0_perfctrl2(); | |
225 | case 3: | |
226 | return r_c0_perfctrl3(); | |
227 | default: | |
228 | WARN_ONCE(1, "Invalid performance counter number (%d)\n", idx); | |
229 | return 0; | |
230 | } | |
231 | } | |
232 | ||
233 | static inline void | |
234 | mipsxx_pmu_write_control(unsigned int idx, unsigned int val) | |
235 | { | |
236 | switch (idx) { | |
237 | case 0: | |
238 | w_c0_perfctrl0(val); | |
239 | return; | |
240 | case 1: | |
241 | w_c0_perfctrl1(val); | |
242 | return; | |
243 | case 2: | |
244 | w_c0_perfctrl2(val); | |
245 | return; | |
246 | case 3: | |
247 | w_c0_perfctrl3(val); | |
248 | return; | |
249 | } | |
250 | } | |
251 | ||
252 | #ifdef CONFIG_MIPS_MT_SMP | |
253 | static DEFINE_RWLOCK(pmuint_rwlock); | |
254 | #endif | |
255 | ||
256 | /* 24K/34K/1004K cores can share the same event map. */ | |
257 | static const struct mips_perf_event mipsxxcore_event_map | |
258 | [PERF_COUNT_HW_MAX] = { | |
259 | [PERF_COUNT_HW_CPU_CYCLES] = { 0x00, CNTR_EVEN | CNTR_ODD, P }, | |
260 | [PERF_COUNT_HW_INSTRUCTIONS] = { 0x01, CNTR_EVEN | CNTR_ODD, T }, | |
261 | [PERF_COUNT_HW_CACHE_REFERENCES] = { UNSUPPORTED_PERF_EVENT_ID }, | |
262 | [PERF_COUNT_HW_CACHE_MISSES] = { UNSUPPORTED_PERF_EVENT_ID }, | |
263 | [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { 0x02, CNTR_EVEN, T }, | |
264 | [PERF_COUNT_HW_BRANCH_MISSES] = { 0x02, CNTR_ODD, T }, | |
265 | [PERF_COUNT_HW_BUS_CYCLES] = { UNSUPPORTED_PERF_EVENT_ID }, | |
266 | }; | |
267 | ||
268 | /* 74K core has different branch event code. */ | |
269 | static const struct mips_perf_event mipsxx74Kcore_event_map | |
270 | [PERF_COUNT_HW_MAX] = { | |
271 | [PERF_COUNT_HW_CPU_CYCLES] = { 0x00, CNTR_EVEN | CNTR_ODD, P }, | |
272 | [PERF_COUNT_HW_INSTRUCTIONS] = { 0x01, CNTR_EVEN | CNTR_ODD, T }, | |
273 | [PERF_COUNT_HW_CACHE_REFERENCES] = { UNSUPPORTED_PERF_EVENT_ID }, | |
274 | [PERF_COUNT_HW_CACHE_MISSES] = { UNSUPPORTED_PERF_EVENT_ID }, | |
275 | [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = { 0x27, CNTR_EVEN, T }, | |
276 | [PERF_COUNT_HW_BRANCH_MISSES] = { 0x27, CNTR_ODD, T }, | |
277 | [PERF_COUNT_HW_BUS_CYCLES] = { UNSUPPORTED_PERF_EVENT_ID }, | |
278 | }; | |
279 | ||
280 | /* 24K/34K/1004K cores can share the same cache event map. */ | |
281 | static const struct mips_perf_event mipsxxcore_cache_map | |
282 | [PERF_COUNT_HW_CACHE_MAX] | |
283 | [PERF_COUNT_HW_CACHE_OP_MAX] | |
284 | [PERF_COUNT_HW_CACHE_RESULT_MAX] = { | |
285 | [C(L1D)] = { | |
286 | /* | |
287 | * Like some other architectures (e.g. ARM), the performance | |
288 | * counters don't differentiate between read and write | |
289 | * accesses/misses, so this isn't strictly correct, but it's the | |
290 | * best we can do. Writes and reads get combined. | |
291 | */ | |
292 | [C(OP_READ)] = { | |
293 | [C(RESULT_ACCESS)] = { 0x0a, CNTR_EVEN, T }, | |
294 | [C(RESULT_MISS)] = { 0x0b, CNTR_EVEN | CNTR_ODD, T }, | |
295 | }, | |
296 | [C(OP_WRITE)] = { | |
297 | [C(RESULT_ACCESS)] = { 0x0a, CNTR_EVEN, T }, | |
298 | [C(RESULT_MISS)] = { 0x0b, CNTR_EVEN | CNTR_ODD, T }, | |
299 | }, | |
300 | [C(OP_PREFETCH)] = { | |
301 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
302 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
303 | }, | |
304 | }, | |
305 | [C(L1I)] = { | |
306 | [C(OP_READ)] = { | |
307 | [C(RESULT_ACCESS)] = { 0x09, CNTR_EVEN, T }, | |
308 | [C(RESULT_MISS)] = { 0x09, CNTR_ODD, T }, | |
309 | }, | |
310 | [C(OP_WRITE)] = { | |
311 | [C(RESULT_ACCESS)] = { 0x09, CNTR_EVEN, T }, | |
312 | [C(RESULT_MISS)] = { 0x09, CNTR_ODD, T }, | |
313 | }, | |
314 | [C(OP_PREFETCH)] = { | |
315 | [C(RESULT_ACCESS)] = { 0x14, CNTR_EVEN, T }, | |
316 | /* | |
317 | * Note that MIPS has only "hit" events countable for | |
318 | * the prefetch operation. | |
319 | */ | |
320 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
321 | }, | |
322 | }, | |
323 | [C(LL)] = { | |
324 | [C(OP_READ)] = { | |
325 | [C(RESULT_ACCESS)] = { 0x15, CNTR_ODD, P }, | |
326 | [C(RESULT_MISS)] = { 0x16, CNTR_EVEN, P }, | |
327 | }, | |
328 | [C(OP_WRITE)] = { | |
329 | [C(RESULT_ACCESS)] = { 0x15, CNTR_ODD, P }, | |
330 | [C(RESULT_MISS)] = { 0x16, CNTR_EVEN, P }, | |
331 | }, | |
332 | [C(OP_PREFETCH)] = { | |
333 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
334 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
335 | }, | |
336 | }, | |
337 | [C(DTLB)] = { | |
338 | [C(OP_READ)] = { | |
339 | [C(RESULT_ACCESS)] = { 0x06, CNTR_EVEN, T }, | |
340 | [C(RESULT_MISS)] = { 0x06, CNTR_ODD, T }, | |
341 | }, | |
342 | [C(OP_WRITE)] = { | |
343 | [C(RESULT_ACCESS)] = { 0x06, CNTR_EVEN, T }, | |
344 | [C(RESULT_MISS)] = { 0x06, CNTR_ODD, T }, | |
345 | }, | |
346 | [C(OP_PREFETCH)] = { | |
347 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
348 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
349 | }, | |
350 | }, | |
351 | [C(ITLB)] = { | |
352 | [C(OP_READ)] = { | |
353 | [C(RESULT_ACCESS)] = { 0x05, CNTR_EVEN, T }, | |
354 | [C(RESULT_MISS)] = { 0x05, CNTR_ODD, T }, | |
355 | }, | |
356 | [C(OP_WRITE)] = { | |
357 | [C(RESULT_ACCESS)] = { 0x05, CNTR_EVEN, T }, | |
358 | [C(RESULT_MISS)] = { 0x05, CNTR_ODD, T }, | |
359 | }, | |
360 | [C(OP_PREFETCH)] = { | |
361 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
362 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
363 | }, | |
364 | }, | |
365 | [C(BPU)] = { | |
366 | /* Using the same code for *HW_BRANCH* */ | |
367 | [C(OP_READ)] = { | |
368 | [C(RESULT_ACCESS)] = { 0x02, CNTR_EVEN, T }, | |
369 | [C(RESULT_MISS)] = { 0x02, CNTR_ODD, T }, | |
370 | }, | |
371 | [C(OP_WRITE)] = { | |
372 | [C(RESULT_ACCESS)] = { 0x02, CNTR_EVEN, T }, | |
373 | [C(RESULT_MISS)] = { 0x02, CNTR_ODD, T }, | |
374 | }, | |
375 | [C(OP_PREFETCH)] = { | |
376 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
377 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
378 | }, | |
379 | }, | |
380 | }; | |
381 | ||
382 | /* 74K core has completely different cache event map. */ | |
383 | static const struct mips_perf_event mipsxx74Kcore_cache_map | |
384 | [PERF_COUNT_HW_CACHE_MAX] | |
385 | [PERF_COUNT_HW_CACHE_OP_MAX] | |
386 | [PERF_COUNT_HW_CACHE_RESULT_MAX] = { | |
387 | [C(L1D)] = { | |
388 | /* | |
389 | * Like some other architectures (e.g. ARM), the performance | |
390 | * counters don't differentiate between read and write | |
391 | * accesses/misses, so this isn't strictly correct, but it's the | |
392 | * best we can do. Writes and reads get combined. | |
393 | */ | |
394 | [C(OP_READ)] = { | |
395 | [C(RESULT_ACCESS)] = { 0x17, CNTR_ODD, T }, | |
396 | [C(RESULT_MISS)] = { 0x18, CNTR_ODD, T }, | |
397 | }, | |
398 | [C(OP_WRITE)] = { | |
399 | [C(RESULT_ACCESS)] = { 0x17, CNTR_ODD, T }, | |
400 | [C(RESULT_MISS)] = { 0x18, CNTR_ODD, T }, | |
401 | }, | |
402 | [C(OP_PREFETCH)] = { | |
403 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
404 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
405 | }, | |
406 | }, | |
407 | [C(L1I)] = { | |
408 | [C(OP_READ)] = { | |
409 | [C(RESULT_ACCESS)] = { 0x06, CNTR_EVEN, T }, | |
410 | [C(RESULT_MISS)] = { 0x06, CNTR_ODD, T }, | |
411 | }, | |
412 | [C(OP_WRITE)] = { | |
413 | [C(RESULT_ACCESS)] = { 0x06, CNTR_EVEN, T }, | |
414 | [C(RESULT_MISS)] = { 0x06, CNTR_ODD, T }, | |
415 | }, | |
416 | [C(OP_PREFETCH)] = { | |
417 | [C(RESULT_ACCESS)] = { 0x34, CNTR_EVEN, T }, | |
418 | /* | |
419 | * Note that MIPS has only "hit" events countable for | |
420 | * the prefetch operation. | |
421 | */ | |
422 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
423 | }, | |
424 | }, | |
425 | [C(LL)] = { | |
426 | [C(OP_READ)] = { | |
427 | [C(RESULT_ACCESS)] = { 0x1c, CNTR_ODD, P }, | |
428 | [C(RESULT_MISS)] = { 0x1d, CNTR_EVEN | CNTR_ODD, P }, | |
429 | }, | |
430 | [C(OP_WRITE)] = { | |
431 | [C(RESULT_ACCESS)] = { 0x1c, CNTR_ODD, P }, | |
432 | [C(RESULT_MISS)] = { 0x1d, CNTR_EVEN | CNTR_ODD, P }, | |
433 | }, | |
434 | [C(OP_PREFETCH)] = { | |
435 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
436 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
437 | }, | |
438 | }, | |
439 | [C(DTLB)] = { | |
440 | /* 74K core does not have specific DTLB events. */ | |
441 | [C(OP_READ)] = { | |
442 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
443 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
444 | }, | |
445 | [C(OP_WRITE)] = { | |
446 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
447 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
448 | }, | |
449 | [C(OP_PREFETCH)] = { | |
450 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
451 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
452 | }, | |
453 | }, | |
454 | [C(ITLB)] = { | |
455 | [C(OP_READ)] = { | |
456 | [C(RESULT_ACCESS)] = { 0x04, CNTR_EVEN, T }, | |
457 | [C(RESULT_MISS)] = { 0x04, CNTR_ODD, T }, | |
458 | }, | |
459 | [C(OP_WRITE)] = { | |
460 | [C(RESULT_ACCESS)] = { 0x04, CNTR_EVEN, T }, | |
461 | [C(RESULT_MISS)] = { 0x04, CNTR_ODD, T }, | |
462 | }, | |
463 | [C(OP_PREFETCH)] = { | |
464 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
465 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
466 | }, | |
467 | }, | |
468 | [C(BPU)] = { | |
469 | /* Using the same code for *HW_BRANCH* */ | |
470 | [C(OP_READ)] = { | |
471 | [C(RESULT_ACCESS)] = { 0x27, CNTR_EVEN, T }, | |
472 | [C(RESULT_MISS)] = { 0x27, CNTR_ODD, T }, | |
473 | }, | |
474 | [C(OP_WRITE)] = { | |
475 | [C(RESULT_ACCESS)] = { 0x27, CNTR_EVEN, T }, | |
476 | [C(RESULT_MISS)] = { 0x27, CNTR_ODD, T }, | |
477 | }, | |
478 | [C(OP_PREFETCH)] = { | |
479 | [C(RESULT_ACCESS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
480 | [C(RESULT_MISS)] = { UNSUPPORTED_PERF_EVENT_ID }, | |
481 | }, | |
482 | }, | |
483 | }; | |
484 | ||
485 | #ifdef CONFIG_MIPS_MT_SMP | |
486 | static void | |
487 | check_and_calc_range(struct perf_event *event, | |
488 | const struct mips_perf_event *pev) | |
489 | { | |
490 | struct hw_perf_event *hwc = &event->hw; | |
491 | ||
492 | if (event->cpu >= 0) { | |
493 | if (pev->range > V) { | |
494 | /* | |
495 | * The user selected an event that is processor | |
496 | * wide, while expecting it to be VPE wide. | |
497 | */ | |
498 | hwc->config_base |= M_TC_EN_ALL; | |
499 | } else { | |
500 | /* | |
501 | * FIXME: cpu_data[event->cpu].vpe_id reports 0 | |
502 | * for both CPUs. | |
503 | */ | |
504 | hwc->config_base |= M_PERFCTL_VPEID(event->cpu); | |
505 | hwc->config_base |= M_TC_EN_VPE; | |
506 | } | |
507 | } else | |
508 | hwc->config_base |= M_TC_EN_ALL; | |
509 | } | |
510 | #else | |
511 | static void | |
512 | check_and_calc_range(struct perf_event *event, | |
513 | const struct mips_perf_event *pev) | |
514 | { | |
515 | } | |
516 | #endif | |
517 | ||
518 | static int __hw_perf_event_init(struct perf_event *event) | |
519 | { | |
520 | struct perf_event_attr *attr = &event->attr; | |
521 | struct hw_perf_event *hwc = &event->hw; | |
522 | const struct mips_perf_event *pev; | |
523 | int err; | |
524 | ||
525 | /* Returning MIPS event descriptor for generic perf event. */ | |
526 | if (PERF_TYPE_HARDWARE == event->attr.type) { | |
527 | if (event->attr.config >= PERF_COUNT_HW_MAX) | |
528 | return -EINVAL; | |
529 | pev = mipspmu_map_general_event(event->attr.config); | |
530 | } else if (PERF_TYPE_HW_CACHE == event->attr.type) { | |
531 | pev = mipspmu_map_cache_event(event->attr.config); | |
532 | } else if (PERF_TYPE_RAW == event->attr.type) { | |
533 | /* We are working on the global raw event. */ | |
534 | mutex_lock(&raw_event_mutex); | |
535 | pev = mipspmu->map_raw_event(event->attr.config); | |
536 | } else { | |
537 | /* The event type is not (yet) supported. */ | |
538 | return -EOPNOTSUPP; | |
539 | } | |
540 | ||
541 | if (IS_ERR(pev)) { | |
542 | if (PERF_TYPE_RAW == event->attr.type) | |
543 | mutex_unlock(&raw_event_mutex); | |
544 | return PTR_ERR(pev); | |
545 | } | |
546 | ||
547 | /* | |
548 | * We allow max flexibility on how each individual counter shared | |
549 | * by the single CPU operates (the mode exclusion and the range). | |
550 | */ | |
551 | hwc->config_base = M_PERFCTL_INTERRUPT_ENABLE; | |
552 | ||
553 | /* Calculate range bits and validate it. */ | |
554 | if (num_possible_cpus() > 1) | |
555 | check_and_calc_range(event, pev); | |
556 | ||
557 | hwc->event_base = mipspmu_perf_event_encode(pev); | |
558 | if (PERF_TYPE_RAW == event->attr.type) | |
559 | mutex_unlock(&raw_event_mutex); | |
560 | ||
561 | if (!attr->exclude_user) | |
562 | hwc->config_base |= M_PERFCTL_USER; | |
563 | if (!attr->exclude_kernel) { | |
564 | hwc->config_base |= M_PERFCTL_KERNEL; | |
565 | /* MIPS kernel mode: KSU == 00b || EXL == 1 || ERL == 1 */ | |
566 | hwc->config_base |= M_PERFCTL_EXL; | |
567 | } | |
568 | if (!attr->exclude_hv) | |
569 | hwc->config_base |= M_PERFCTL_SUPERVISOR; | |
570 | ||
571 | hwc->config_base &= M_PERFCTL_CONFIG_MASK; | |
572 | /* | |
573 | * The event can belong to another cpu. We do not assign a local | |
574 | * counter for it for now. | |
575 | */ | |
576 | hwc->idx = -1; | |
577 | hwc->config = 0; | |
578 | ||
579 | if (!hwc->sample_period) { | |
580 | hwc->sample_period = MAX_PERIOD; | |
581 | hwc->last_period = hwc->sample_period; | |
582 | local64_set(&hwc->period_left, hwc->sample_period); | |
583 | } | |
584 | ||
585 | err = 0; | |
586 | if (event->group_leader != event) { | |
587 | err = validate_group(event); | |
588 | if (err) | |
589 | return -EINVAL; | |
590 | } | |
591 | ||
592 | event->destroy = hw_perf_event_destroy; | |
593 | ||
594 | return err; | |
595 | } | |
596 | ||
597 | static void pause_local_counters(void) | |
598 | { | |
599 | struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); | |
600 | int counters = mipspmu->num_counters; | |
601 | unsigned long flags; | |
602 | ||
603 | local_irq_save(flags); | |
604 | switch (counters) { | |
605 | case 4: | |
606 | cpuc->saved_ctrl[3] = r_c0_perfctrl3(); | |
607 | w_c0_perfctrl3(cpuc->saved_ctrl[3] & | |
608 | ~M_PERFCTL_COUNT_EVENT_WHENEVER); | |
609 | case 3: | |
610 | cpuc->saved_ctrl[2] = r_c0_perfctrl2(); | |
611 | w_c0_perfctrl2(cpuc->saved_ctrl[2] & | |
612 | ~M_PERFCTL_COUNT_EVENT_WHENEVER); | |
613 | case 2: | |
614 | cpuc->saved_ctrl[1] = r_c0_perfctrl1(); | |
615 | w_c0_perfctrl1(cpuc->saved_ctrl[1] & | |
616 | ~M_PERFCTL_COUNT_EVENT_WHENEVER); | |
617 | case 1: | |
618 | cpuc->saved_ctrl[0] = r_c0_perfctrl0(); | |
619 | w_c0_perfctrl0(cpuc->saved_ctrl[0] & | |
620 | ~M_PERFCTL_COUNT_EVENT_WHENEVER); | |
621 | } | |
622 | local_irq_restore(flags); | |
623 | } | |
624 | ||
625 | static void resume_local_counters(void) | |
626 | { | |
627 | struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); | |
628 | int counters = mipspmu->num_counters; | |
629 | unsigned long flags; | |
630 | ||
631 | local_irq_save(flags); | |
632 | switch (counters) { | |
633 | case 4: | |
634 | w_c0_perfctrl3(cpuc->saved_ctrl[3]); | |
635 | case 3: | |
636 | w_c0_perfctrl2(cpuc->saved_ctrl[2]); | |
637 | case 2: | |
638 | w_c0_perfctrl1(cpuc->saved_ctrl[1]); | |
639 | case 1: | |
640 | w_c0_perfctrl0(cpuc->saved_ctrl[0]); | |
641 | } | |
642 | local_irq_restore(flags); | |
643 | } | |
644 | ||
645 | static int mipsxx_pmu_handle_shared_irq(void) | |
646 | { | |
647 | struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); | |
648 | struct perf_sample_data data; | |
649 | unsigned int counters = mipspmu->num_counters; | |
650 | unsigned int counter; | |
651 | int handled = IRQ_NONE; | |
652 | struct pt_regs *regs; | |
653 | ||
654 | if (cpu_has_mips_r2 && !(read_c0_cause() & (1 << 26))) | |
655 | return handled; | |
656 | ||
657 | /* | |
658 | * First we pause the local counters, so that when we are locked | |
659 | * here, the counters are all paused. When it gets locked due to | |
660 | * perf_disable(), the timer interrupt handler will be delayed. | |
661 | * | |
662 | * See also mipsxx_pmu_start(). | |
663 | */ | |
664 | pause_local_counters(); | |
665 | #ifdef CONFIG_MIPS_MT_SMP | |
666 | read_lock(&pmuint_rwlock); | |
667 | #endif | |
668 | ||
669 | regs = get_irq_regs(); | |
670 | ||
671 | perf_sample_data_init(&data, 0); | |
672 | ||
673 | switch (counters) { | |
674 | #define HANDLE_COUNTER(n) \ | |
675 | case n + 1: \ | |
676 | if (test_bit(n, cpuc->used_mask)) { \ | |
677 | counter = r_c0_perfcntr ## n(); \ | |
678 | if (counter & M_COUNTER_OVERFLOW) { \ | |
679 | w_c0_perfcntr ## n(counter & \ | |
680 | VALID_COUNT); \ | |
681 | if (test_and_change_bit(n, cpuc->msbs)) \ | |
682 | handle_associated_event(cpuc, \ | |
683 | n, &data, regs); \ | |
684 | handled = IRQ_HANDLED; \ | |
685 | } \ | |
686 | } | |
687 | HANDLE_COUNTER(3) | |
688 | HANDLE_COUNTER(2) | |
689 | HANDLE_COUNTER(1) | |
690 | HANDLE_COUNTER(0) | |
691 | } | |
692 | ||
693 | /* | |
694 | * Do all the work for the pending perf events. We can do this | |
695 | * in here because the performance counter interrupt is a regular | |
696 | * interrupt, not NMI. | |
697 | */ | |
698 | if (handled == IRQ_HANDLED) | |
699 | perf_event_do_pending(); | |
700 | ||
701 | #ifdef CONFIG_MIPS_MT_SMP | |
702 | read_unlock(&pmuint_rwlock); | |
703 | #endif | |
704 | resume_local_counters(); | |
705 | return handled; | |
706 | } | |
707 | ||
708 | static irqreturn_t | |
709 | mipsxx_pmu_handle_irq(int irq, void *dev) | |
710 | { | |
711 | return mipsxx_pmu_handle_shared_irq(); | |
712 | } | |
713 | ||
714 | static void mipsxx_pmu_start(void) | |
715 | { | |
716 | #ifdef CONFIG_MIPS_MT_SMP | |
717 | write_unlock(&pmuint_rwlock); | |
718 | #endif | |
719 | resume_local_counters(); | |
720 | } | |
721 | ||
722 | /* | |
723 | * MIPS performance counters can be per-TC. The control registers can | |
724 | * not be directly accessed accross CPUs. Hence if we want to do global | |
725 | * control, we need cross CPU calls. on_each_cpu() can help us, but we | |
726 | * can not make sure this function is called with interrupts enabled. So | |
727 | * here we pause local counters and then grab a rwlock and leave the | |
728 | * counters on other CPUs alone. If any counter interrupt raises while | |
729 | * we own the write lock, simply pause local counters on that CPU and | |
730 | * spin in the handler. Also we know we won't be switched to another | |
731 | * CPU after pausing local counters and before grabbing the lock. | |
732 | */ | |
733 | static void mipsxx_pmu_stop(void) | |
734 | { | |
735 | pause_local_counters(); | |
736 | #ifdef CONFIG_MIPS_MT_SMP | |
737 | write_lock(&pmuint_rwlock); | |
738 | #endif | |
739 | } | |
740 | ||
741 | static int | |
742 | mipsxx_pmu_alloc_counter(struct cpu_hw_events *cpuc, | |
743 | struct hw_perf_event *hwc) | |
744 | { | |
745 | int i; | |
746 | ||
747 | /* | |
748 | * We only need to care the counter mask. The range has been | |
749 | * checked definitely. | |
750 | */ | |
751 | unsigned long cntr_mask = (hwc->event_base >> 8) & 0xffff; | |
752 | ||
753 | for (i = mipspmu->num_counters - 1; i >= 0; i--) { | |
754 | /* | |
755 | * Note that some MIPS perf events can be counted by both | |
756 | * even and odd counters, wheresas many other are only by | |
757 | * even _or_ odd counters. This introduces an issue that | |
758 | * when the former kind of event takes the counter the | |
759 | * latter kind of event wants to use, then the "counter | |
760 | * allocation" for the latter event will fail. In fact if | |
761 | * they can be dynamically swapped, they both feel happy. | |
762 | * But here we leave this issue alone for now. | |
763 | */ | |
764 | if (test_bit(i, &cntr_mask) && | |
765 | !test_and_set_bit(i, cpuc->used_mask)) | |
766 | return i; | |
767 | } | |
768 | ||
769 | return -EAGAIN; | |
770 | } | |
771 | ||
772 | static void | |
773 | mipsxx_pmu_enable_event(struct hw_perf_event *evt, int idx) | |
774 | { | |
775 | struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); | |
776 | unsigned long flags; | |
777 | ||
778 | WARN_ON(idx < 0 || idx >= mipspmu->num_counters); | |
779 | ||
780 | local_irq_save(flags); | |
781 | cpuc->saved_ctrl[idx] = M_PERFCTL_EVENT(evt->event_base & 0xff) | | |
782 | (evt->config_base & M_PERFCTL_CONFIG_MASK) | | |
783 | /* Make sure interrupt enabled. */ | |
784 | M_PERFCTL_INTERRUPT_ENABLE; | |
785 | /* | |
786 | * We do not actually let the counter run. Leave it until start(). | |
787 | */ | |
788 | local_irq_restore(flags); | |
789 | } | |
790 | ||
791 | static void | |
792 | mipsxx_pmu_disable_event(int idx) | |
793 | { | |
794 | struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); | |
795 | unsigned long flags; | |
796 | ||
797 | WARN_ON(idx < 0 || idx >= mipspmu->num_counters); | |
798 | ||
799 | local_irq_save(flags); | |
800 | cpuc->saved_ctrl[idx] = mipsxx_pmu_read_control(idx) & | |
801 | ~M_PERFCTL_COUNT_EVENT_WHENEVER; | |
802 | mipsxx_pmu_write_control(idx, cpuc->saved_ctrl[idx]); | |
803 | local_irq_restore(flags); | |
804 | } | |
805 | ||
806 | /* 24K */ | |
807 | #define IS_UNSUPPORTED_24K_EVENT(r, b) \ | |
808 | ((b) == 12 || (r) == 151 || (r) == 152 || (b) == 26 || \ | |
809 | (b) == 27 || (r) == 28 || (r) == 158 || (b) == 31 || \ | |
810 | (b) == 32 || (b) == 34 || (b) == 36 || (r) == 168 || \ | |
811 | (r) == 172 || (b) == 47 || ((b) >= 56 && (b) <= 63) || \ | |
812 | ((b) >= 68 && (b) <= 127)) | |
813 | #define IS_BOTH_COUNTERS_24K_EVENT(b) \ | |
814 | ((b) == 0 || (b) == 1 || (b) == 11) | |
815 | ||
816 | /* 34K */ | |
817 | #define IS_UNSUPPORTED_34K_EVENT(r, b) \ | |
818 | ((b) == 12 || (r) == 27 || (r) == 158 || (b) == 36 || \ | |
819 | (b) == 38 || (r) == 175 || ((b) >= 56 && (b) <= 63) || \ | |
820 | ((b) >= 68 && (b) <= 127)) | |
821 | #define IS_BOTH_COUNTERS_34K_EVENT(b) \ | |
822 | ((b) == 0 || (b) == 1 || (b) == 11) | |
823 | #ifdef CONFIG_MIPS_MT_SMP | |
824 | #define IS_RANGE_P_34K_EVENT(r, b) \ | |
825 | ((b) == 0 || (r) == 18 || (b) == 21 || (b) == 22 || \ | |
826 | (b) == 25 || (b) == 39 || (r) == 44 || (r) == 174 || \ | |
827 | (r) == 176 || ((b) >= 50 && (b) <= 55) || \ | |
828 | ((b) >= 64 && (b) <= 67)) | |
829 | #define IS_RANGE_V_34K_EVENT(r) ((r) == 47) | |
830 | #endif | |
831 | ||
832 | /* 74K */ | |
833 | #define IS_UNSUPPORTED_74K_EVENT(r, b) \ | |
834 | ((r) == 5 || ((r) >= 135 && (r) <= 137) || \ | |
835 | ((b) >= 10 && (b) <= 12) || (b) == 22 || (b) == 27 || \ | |
836 | (b) == 33 || (b) == 34 || ((b) >= 47 && (b) <= 49) || \ | |
837 | (r) == 178 || (b) == 55 || (b) == 57 || (b) == 60 || \ | |
838 | (b) == 61 || (r) == 62 || (r) == 191 || \ | |
839 | ((b) >= 64 && (b) <= 127)) | |
840 | #define IS_BOTH_COUNTERS_74K_EVENT(b) \ | |
841 | ((b) == 0 || (b) == 1) | |
842 | ||
843 | /* 1004K */ | |
844 | #define IS_UNSUPPORTED_1004K_EVENT(r, b) \ | |
845 | ((b) == 12 || (r) == 27 || (r) == 158 || (b) == 38 || \ | |
846 | (r) == 175 || (b) == 63 || ((b) >= 68 && (b) <= 127)) | |
847 | #define IS_BOTH_COUNTERS_1004K_EVENT(b) \ | |
848 | ((b) == 0 || (b) == 1 || (b) == 11) | |
849 | #ifdef CONFIG_MIPS_MT_SMP | |
850 | #define IS_RANGE_P_1004K_EVENT(r, b) \ | |
851 | ((b) == 0 || (r) == 18 || (b) == 21 || (b) == 22 || \ | |
852 | (b) == 25 || (b) == 36 || (b) == 39 || (r) == 44 || \ | |
853 | (r) == 174 || (r) == 176 || ((b) >= 50 && (b) <= 59) || \ | |
854 | (r) == 188 || (b) == 61 || (b) == 62 || \ | |
855 | ((b) >= 64 && (b) <= 67)) | |
856 | #define IS_RANGE_V_1004K_EVENT(r) ((r) == 47) | |
857 | #endif | |
858 | ||
859 | /* | |
860 | * User can use 0-255 raw events, where 0-127 for the events of even | |
861 | * counters, and 128-255 for odd counters. Note that bit 7 is used to | |
862 | * indicate the parity. So, for example, when user wants to take the | |
863 | * Event Num of 15 for odd counters (by referring to the user manual), | |
864 | * then 128 needs to be added to 15 as the input for the event config, | |
865 | * i.e., 143 (0x8F) to be used. | |
866 | */ | |
867 | static const struct mips_perf_event * | |
868 | mipsxx_pmu_map_raw_event(u64 config) | |
869 | { | |
870 | unsigned int raw_id = config & 0xff; | |
871 | unsigned int base_id = raw_id & 0x7f; | |
872 | ||
873 | switch (current_cpu_type()) { | |
874 | case CPU_24K: | |
875 | if (IS_UNSUPPORTED_24K_EVENT(raw_id, base_id)) | |
876 | return ERR_PTR(-EOPNOTSUPP); | |
877 | raw_event.event_id = base_id; | |
878 | if (IS_BOTH_COUNTERS_24K_EVENT(base_id)) | |
879 | raw_event.cntr_mask = CNTR_EVEN | CNTR_ODD; | |
880 | else | |
881 | raw_event.cntr_mask = | |
882 | raw_id > 127 ? CNTR_ODD : CNTR_EVEN; | |
883 | #ifdef CONFIG_MIPS_MT_SMP | |
884 | /* | |
885 | * This is actually doing nothing. Non-multithreading | |
886 | * CPUs will not check and calculate the range. | |
887 | */ | |
888 | raw_event.range = P; | |
889 | #endif | |
890 | break; | |
891 | case CPU_34K: | |
892 | if (IS_UNSUPPORTED_34K_EVENT(raw_id, base_id)) | |
893 | return ERR_PTR(-EOPNOTSUPP); | |
894 | raw_event.event_id = base_id; | |
895 | if (IS_BOTH_COUNTERS_34K_EVENT(base_id)) | |
896 | raw_event.cntr_mask = CNTR_EVEN | CNTR_ODD; | |
897 | else | |
898 | raw_event.cntr_mask = | |
899 | raw_id > 127 ? CNTR_ODD : CNTR_EVEN; | |
900 | #ifdef CONFIG_MIPS_MT_SMP | |
901 | if (IS_RANGE_P_34K_EVENT(raw_id, base_id)) | |
902 | raw_event.range = P; | |
903 | else if (unlikely(IS_RANGE_V_34K_EVENT(raw_id))) | |
904 | raw_event.range = V; | |
905 | else | |
906 | raw_event.range = T; | |
907 | #endif | |
908 | break; | |
909 | case CPU_74K: | |
910 | if (IS_UNSUPPORTED_74K_EVENT(raw_id, base_id)) | |
911 | return ERR_PTR(-EOPNOTSUPP); | |
912 | raw_event.event_id = base_id; | |
913 | if (IS_BOTH_COUNTERS_74K_EVENT(base_id)) | |
914 | raw_event.cntr_mask = CNTR_EVEN | CNTR_ODD; | |
915 | else | |
916 | raw_event.cntr_mask = | |
917 | raw_id > 127 ? CNTR_ODD : CNTR_EVEN; | |
918 | #ifdef CONFIG_MIPS_MT_SMP | |
919 | raw_event.range = P; | |
920 | #endif | |
921 | break; | |
922 | case CPU_1004K: | |
923 | if (IS_UNSUPPORTED_1004K_EVENT(raw_id, base_id)) | |
924 | return ERR_PTR(-EOPNOTSUPP); | |
925 | raw_event.event_id = base_id; | |
926 | if (IS_BOTH_COUNTERS_1004K_EVENT(base_id)) | |
927 | raw_event.cntr_mask = CNTR_EVEN | CNTR_ODD; | |
928 | else | |
929 | raw_event.cntr_mask = | |
930 | raw_id > 127 ? CNTR_ODD : CNTR_EVEN; | |
931 | #ifdef CONFIG_MIPS_MT_SMP | |
932 | if (IS_RANGE_P_1004K_EVENT(raw_id, base_id)) | |
933 | raw_event.range = P; | |
934 | else if (unlikely(IS_RANGE_V_1004K_EVENT(raw_id))) | |
935 | raw_event.range = V; | |
936 | else | |
937 | raw_event.range = T; | |
938 | #endif | |
939 | break; | |
940 | } | |
941 | ||
942 | return &raw_event; | |
943 | } | |
944 | ||
945 | static struct mips_pmu mipsxxcore_pmu = { | |
946 | .handle_irq = mipsxx_pmu_handle_irq, | |
947 | .handle_shared_irq = mipsxx_pmu_handle_shared_irq, | |
948 | .start = mipsxx_pmu_start, | |
949 | .stop = mipsxx_pmu_stop, | |
950 | .alloc_counter = mipsxx_pmu_alloc_counter, | |
951 | .read_counter = mipsxx_pmu_read_counter, | |
952 | .write_counter = mipsxx_pmu_write_counter, | |
953 | .enable_event = mipsxx_pmu_enable_event, | |
954 | .disable_event = mipsxx_pmu_disable_event, | |
955 | .map_raw_event = mipsxx_pmu_map_raw_event, | |
956 | .general_event_map = &mipsxxcore_event_map, | |
957 | .cache_event_map = &mipsxxcore_cache_map, | |
958 | }; | |
959 | ||
960 | static struct mips_pmu mipsxx74Kcore_pmu = { | |
961 | .handle_irq = mipsxx_pmu_handle_irq, | |
962 | .handle_shared_irq = mipsxx_pmu_handle_shared_irq, | |
963 | .start = mipsxx_pmu_start, | |
964 | .stop = mipsxx_pmu_stop, | |
965 | .alloc_counter = mipsxx_pmu_alloc_counter, | |
966 | .read_counter = mipsxx_pmu_read_counter, | |
967 | .write_counter = mipsxx_pmu_write_counter, | |
968 | .enable_event = mipsxx_pmu_enable_event, | |
969 | .disable_event = mipsxx_pmu_disable_event, | |
970 | .map_raw_event = mipsxx_pmu_map_raw_event, | |
971 | .general_event_map = &mipsxx74Kcore_event_map, | |
972 | .cache_event_map = &mipsxx74Kcore_cache_map, | |
973 | }; | |
974 | ||
975 | static int __init | |
976 | init_hw_perf_events(void) | |
977 | { | |
978 | int counters, irq; | |
979 | ||
980 | pr_info("Performance counters: "); | |
981 | ||
982 | counters = n_counters(); | |
983 | if (counters == 0) { | |
984 | pr_cont("No available PMU.\n"); | |
985 | return -ENODEV; | |
986 | } | |
987 | ||
988 | #ifdef CONFIG_MIPS_MT_SMP | |
989 | cpu_has_mipsmt_pertccounters = read_c0_config7() & (1<<19); | |
990 | if (!cpu_has_mipsmt_pertccounters) | |
991 | counters = counters_total_to_per_cpu(counters); | |
992 | #endif | |
993 | ||
994 | #ifdef MSC01E_INT_BASE | |
995 | if (cpu_has_veic) { | |
996 | /* | |
997 | * Using platform specific interrupt controller defines. | |
998 | */ | |
999 | irq = MSC01E_INT_BASE + MSC01E_INT_PERFCTR; | |
1000 | } else { | |
1001 | #endif | |
1002 | if (cp0_perfcount_irq >= 0) | |
1003 | irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq; | |
1004 | else | |
1005 | irq = -1; | |
1006 | #ifdef MSC01E_INT_BASE | |
1007 | } | |
1008 | #endif | |
1009 | ||
1010 | on_each_cpu(reset_counters, (void *)(long)counters, 1); | |
1011 | ||
1012 | switch (current_cpu_type()) { | |
1013 | case CPU_24K: | |
1014 | mipsxxcore_pmu.name = "mips/24K"; | |
1015 | mipsxxcore_pmu.num_counters = counters; | |
1016 | mipsxxcore_pmu.irq = irq; | |
1017 | mipspmu = &mipsxxcore_pmu; | |
1018 | break; | |
1019 | case CPU_34K: | |
1020 | mipsxxcore_pmu.name = "mips/34K"; | |
1021 | mipsxxcore_pmu.num_counters = counters; | |
1022 | mipsxxcore_pmu.irq = irq; | |
1023 | mipspmu = &mipsxxcore_pmu; | |
1024 | break; | |
1025 | case CPU_74K: | |
1026 | mipsxx74Kcore_pmu.name = "mips/74K"; | |
1027 | mipsxx74Kcore_pmu.num_counters = counters; | |
1028 | mipsxx74Kcore_pmu.irq = irq; | |
1029 | mipspmu = &mipsxx74Kcore_pmu; | |
1030 | break; | |
1031 | case CPU_1004K: | |
1032 | mipsxxcore_pmu.name = "mips/1004K"; | |
1033 | mipsxxcore_pmu.num_counters = counters; | |
1034 | mipsxxcore_pmu.irq = irq; | |
1035 | mipspmu = &mipsxxcore_pmu; | |
1036 | break; | |
1037 | default: | |
1038 | pr_cont("Either hardware does not support performance " | |
1039 | "counters, or not yet implemented.\n"); | |
1040 | return -ENODEV; | |
1041 | } | |
1042 | ||
1043 | if (mipspmu) | |
1044 | pr_cont("%s PMU enabled, %d counters available to each " | |
1045 | "CPU, irq %d%s\n", mipspmu->name, counters, irq, | |
1046 | irq < 0 ? " (share with timer interrupt)" : ""); | |
1047 | ||
1048 | return 0; | |
1049 | } | |
1050 | arch_initcall(init_hw_perf_events); | |
1051 | ||
1052 | #endif /* defined(CONFIG_CPU_MIPS32)... */ |